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[ffmpeg] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build (deprecated) [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Individual component options:
152   --disable-everything     disable all components listed below
153   --disable-encoder=NAME   disable encoder NAME
154   --enable-encoder=NAME    enable encoder NAME
155   --disable-encoders       disable all encoders
156   --disable-decoder=NAME   disable decoder NAME
157   --enable-decoder=NAME    enable decoder NAME
158   --disable-decoders       disable all decoders
159   --disable-hwaccel=NAME   disable hwaccel NAME
160   --enable-hwaccel=NAME    enable hwaccel NAME
161   --disable-hwaccels       disable all hwaccels
162   --disable-muxer=NAME     disable muxer NAME
163   --enable-muxer=NAME      enable muxer NAME
164   --disable-muxers         disable all muxers
165   --disable-demuxer=NAME   disable demuxer NAME
166   --enable-demuxer=NAME    enable demuxer NAME
167   --disable-demuxers       disable all demuxers
168   --enable-parser=NAME     enable parser NAME
169   --disable-parser=NAME    disable parser NAME
170   --disable-parsers        disable all parsers
171   --enable-bsf=NAME        enable bitstream filter NAME
172   --disable-bsf=NAME       disable bitstream filter NAME
173   --disable-bsfs           disable all bitstream filters
174   --enable-protocol=NAME   enable protocol NAME
175   --disable-protocol=NAME  disable protocol NAME
176   --disable-protocols      disable all protocols
177   --enable-indev=NAME      enable input device NAME
178   --disable-indev=NAME     disable input device NAME
179   --disable-indevs         disable input devices
180   --enable-outdev=NAME     enable output device NAME
181   --disable-outdev=NAME    disable output device NAME
182   --disable-outdevs        disable output devices
183   --disable-devices        disable all devices
184   --enable-filter=NAME     enable filter NAME
185   --disable-filter=NAME    disable filter NAME
186   --disable-filters        disable all filters
187
188 External library support:
189
190   Using any of the following switches will allow FFmpeg to link to the
191   corresponding external library. All the components depending on that library
192   will become enabled, if all their other dependencies are met and they are not
193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
194   libwavpack and allow the libwavpack encoder to be built, unless it is
195   specifically disabled with --disable-encoder=libwavpack.
196
197   Note that only the system libraries are auto-detected. All the other external
198   libraries must be explicitly enabled.
199
200   Also note that the following help text describes the purpose of the libraries
201   themselves, not all their features will necessarily be usable by FFmpeg.
202
203   --disable-alsa           disable ALSA support [autodetect]
204   --disable-appkit         disable Apple AppKit framework [autodetect]
205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
206   --enable-avisynth        enable reading of AviSynth script files [no]
207   --disable-bzlib          disable bzlib [autodetect]
208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
210   --enable-frei0r          enable frei0r video filtering [no]
211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
212                            if openssl, librtmp or gmp is not used [no]
213   --enable-gmp             enable gmp, needed for rtmp(t)e support
214                            if openssl or librtmp is not used [no]
215   --enable-gnutls          enable gnutls, needed for https support
216                            if openssl, libtls or mbedtls is not used [no]
217   --disable-iconv          disable iconv [autodetect]
218   --enable-jni             enable JNI support [no]
219   --enable-ladspa          enable LADSPA audio filtering [no]
220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
222   --enable-libass          enable libass subtitles rendering,
223                            needed for subtitles and ass filter [no]
224   --enable-libbluray       enable BluRay reading using libbluray [no]
225   --enable-libbs2b         enable bs2b DSP library [no]
226   --enable-libcaca         enable textual display using libcaca [no]
227   --enable-libcelt         enable CELT decoding via libcelt [no]
228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
233                            and libraw1394 [no]
234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
239   --enable-libgme          enable Game Music Emu via libgme [no]
240   --enable-libgsm          enable GSM de/encoding via libgsm [no]
241   --enable-libiec61883     enable iec61883 via libiec61883 [no]
242   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
243   --enable-libjack         enable JACK audio sound server [no]
244   --enable-libklvanc       enable Kernel Labs VANC processing [no]
245   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
246   --enable-liblensfun      enable lensfun lens correction [no]
247   --enable-libmodplug      enable ModPlug via libmodplug [no]
248   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
249   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
250   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
251   --enable-libopencv       enable video filtering via libopencv [no]
252   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
253   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
254   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
255   --enable-libopus         enable Opus de/encoding via libopus [no]
256   --enable-libpulse        enable Pulseaudio input via libpulse [no]
257   --enable-librsvg         enable SVG rasterization via librsvg [no]
258   --enable-librubberband   enable rubberband needed for rubberband filter [no]
259   --enable-librtmp         enable RTMP[E] support via librtmp [no]
260   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
261   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
262   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
263   --enable-libsoxr         enable Include libsoxr resampling [no]
264   --enable-libspeex        enable Speex de/encoding via libspeex [no]
265   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
266   --enable-libssh          enable SFTP protocol via libssh [no]
267   --enable-libtensorflow   enable TensorFlow as a DNN module backend
268                            for DNN based filters like sr [no]
269   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
270   --enable-libtheora       enable Theora encoding via libtheora [no]
271   --enable-libtls          enable LibreSSL (via libtls), needed for https support
272                            if openssl, gnutls or mbedtls is not used [no]
273   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
274   --enable-libv4l2         enable libv4l2/v4l-utils [no]
275   --enable-libvidstab      enable video stabilization using vid.stab [no]
276   --enable-libvmaf         enable vmaf filter via libvmaf [no]
277   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
278   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
279                            native implementation exists [no]
280   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
281   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
282   --enable-libwebp         enable WebP encoding via libwebp [no]
283   --enable-libx264         enable H.264 encoding via x264 [no]
284   --enable-libx265         enable HEVC encoding via x265 [no]
285   --enable-libxavs         enable AVS encoding via xavs [no]
286   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
287   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
288   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
289   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
290   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
291   --enable-libxvid         enable Xvid encoding via xvidcore,
292                            native MPEG-4/Xvid encoder exists [no]
293   --enable-libxml2         enable XML parsing using the C library libxml2, needed
294                            for dash demuxing support [no]
295   --enable-libzimg         enable z.lib, needed for zscale filter [no]
296   --enable-libzmq          enable message passing via libzmq [no]
297   --enable-libzvbi         enable teletext support via libzvbi [no]
298   --enable-lv2             enable LV2 audio filtering [no]
299   --disable-lzma           disable lzma [autodetect]
300   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
301   --enable-mbedtls         enable mbedTLS, needed for https support
302                            if openssl, gnutls or libtls is not used [no]
303   --enable-mediacodec      enable Android MediaCodec support [no]
304   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
305   --enable-openal          enable OpenAL 1.1 capture support [no]
306   --enable-opencl          enable OpenCL processing [no]
307   --enable-opengl          enable OpenGL rendering [no]
308   --enable-openssl         enable openssl, needed for https support
309                            if gnutls, libtls or mbedtls is not used [no]
310   --disable-sndio          disable sndio support [autodetect]
311   --disable-schannel       disable SChannel SSP, needed for TLS support on
312                            Windows if openssl and gnutls are not used [autodetect]
313   --disable-sdl2           disable sdl2 [autodetect]
314   --disable-securetransport disable Secure Transport, needed for TLS support
315                            on OSX if openssl and gnutls are not used [autodetect]
316   --enable-vapoursynth     enable VapourSynth demuxer [no]
317   --disable-xlib           disable xlib [autodetect]
318   --disable-zlib           disable zlib [autodetect]
319
320   The following libraries provide various hardware acceleration features:
321   --disable-amf            disable AMF video encoding code [autodetect]
322   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
323   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
324   --disable-cuvid          disable Nvidia CUVID support [autodetect]
325   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
326   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
327   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
328   --enable-libdrm          enable DRM code (Linux) [no]
329   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
330   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
331   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
332   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
333   --disable-nvenc          disable Nvidia video encoding code [autodetect]
334   --enable-omx             enable OpenMAX IL code [no]
335   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
336   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
337   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
338   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
339   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
340   --disable-videotoolbox   disable VideoToolbox code [autodetect]
341
342 Toolchain options:
343   --arch=ARCH              select architecture [$arch]
344   --cpu=CPU                select the minimum required CPU (affects
345                            instruction selection, may crash on older CPUs)
346   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
347   --progs-suffix=SUFFIX    program name suffix []
348   --enable-cross-compile   assume a cross-compiler is used
349   --sysroot=PATH           root of cross-build tree
350   --sysinclude=PATH        location of cross-build system headers
351   --target-os=OS           compiler targets OS [$target_os]
352   --target-exec=CMD        command to run executables on target
353   --target-path=DIR        path to view of build directory on target
354   --target-samples=DIR     path to samples directory on target
355   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
356   --toolchain=NAME         set tool defaults according to NAME
357                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
358                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
359                            valgrind-massif, valgrind-memcheck,
360                            msvc, icl, gcov, llvm-cov, hardened)
361   --nm=NM                  use nm tool NM [$nm_default]
362   --ar=AR                  use archive tool AR [$ar_default]
363   --as=AS                  use assembler AS [$as_default]
364   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
365   --strip=STRIP            use strip tool STRIP [$strip_default]
366   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
367   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
368   --cc=CC                  use C compiler CC [$cc_default]
369   --cxx=CXX                use C compiler CXX [$cxx_default]
370   --objcc=OCC              use ObjC compiler OCC [$cc_default]
371   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
372   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
373   --ld=LD                  use linker LD [$ld_default]
374   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
375   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
376   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
377   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
378   --host-cc=HOSTCC         use host C compiler HOSTCC
379   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
380   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
381   --host-ld=HOSTLD         use host linker HOSTLD
382   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
383   --host-extralibs=HLIBS   use libs HLIBS when linking for host
384   --host-os=OS             compiler host OS [$target_os]
385   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
386   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
387   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
388   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
389   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
390   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
391   --extra-libs=ELIBS       add ELIBS [$ELIBS]
392   --extra-version=STRING   version string suffix []
393   --optflags=OPTFLAGS      override optimization-related compiler flags
394   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
395   --build-suffix=SUFFIX    library name suffix []
396   --enable-pic             build position-independent code
397   --enable-thumb           compile for Thumb instruction set
398   --enable-lto             use link-time optimization
399   --env="ENV=override"     override the environment variables
400
401 Advanced options (experts only):
402   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
403   --custom-allocator=NAME  use a supported custom allocator
404   --disable-symver         disable symbol versioning
405   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
406   --disable-safe-bitstream-reader
407                            disable buffer boundary checking in bitreaders
408                            (faster, but may crash)
409   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
410
411 Optimization options (experts only):
412   --disable-asm            disable all assembly optimizations
413   --disable-altivec        disable AltiVec optimizations
414   --disable-vsx            disable VSX optimizations
415   --disable-power8         disable POWER8 optimizations
416   --disable-amd3dnow       disable 3DNow! optimizations
417   --disable-amd3dnowext    disable 3DNow! extended optimizations
418   --disable-mmx            disable MMX optimizations
419   --disable-mmxext         disable MMXEXT optimizations
420   --disable-sse            disable SSE optimizations
421   --disable-sse2           disable SSE2 optimizations
422   --disable-sse3           disable SSE3 optimizations
423   --disable-ssse3          disable SSSE3 optimizations
424   --disable-sse4           disable SSE4 optimizations
425   --disable-sse42          disable SSE4.2 optimizations
426   --disable-avx            disable AVX optimizations
427   --disable-xop            disable XOP optimizations
428   --disable-fma3           disable FMA3 optimizations
429   --disable-fma4           disable FMA4 optimizations
430   --disable-avx2           disable AVX2 optimizations
431   --disable-avx512         disable AVX-512 optimizations
432   --disable-aesni          disable AESNI optimizations
433   --disable-armv5te        disable armv5te optimizations
434   --disable-armv6          disable armv6 optimizations
435   --disable-armv6t2        disable armv6t2 optimizations
436   --disable-vfp            disable VFP optimizations
437   --disable-neon           disable NEON optimizations
438   --disable-inline-asm     disable use of inline assembly
439   --disable-x86asm         disable use of standalone x86 assembly
440   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
441   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
442   --disable-msa            disable MSA optimizations
443   --disable-mipsfpu        disable floating point MIPS optimizations
444   --disable-mmi            disable Loongson SIMD optimizations
445   --disable-fast-unaligned consider unaligned accesses slow
446
447 Developer options (useful when working on FFmpeg itself):
448   --disable-debug          disable debugging symbols
449   --enable-debug=LEVEL     set the debug level [$debuglevel]
450   --disable-optimizations  disable compiler optimizations
451   --enable-extra-warnings  enable more compiler warnings
452   --disable-stripping      disable stripping of executables and shared libraries
453   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
454                            2 causes a slowdown at runtime.
455   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
456   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
457                            leaks and errors, using the specified valgrind binary.
458                            Cannot be combined with --target-exec
459   --enable-ftrapv          Trap arithmetic overflows
460   --samples=PATH           location of test samples for FATE, if not set use
461                            \$FATE_SAMPLES at make invocation time.
462   --enable-neon-clobber-test check NEON registers for clobbering (should be
463                            used only for debugging purposes)
464   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
465                            should be used only for debugging purposes)
466   --enable-random          randomly enable/disable components
467   --disable-random
468   --enable-random=LIST     randomly enable/disable specific components or
469   --disable-random=LIST    component groups. LIST is a comma-separated list
470                            of NAME[:PROB] entries where NAME is a component
471                            (group) and PROB the probability associated with
472                            NAME (default 0.5).
473   --random-seed=VALUE      seed value for --enable/disable-random
474   --disable-valgrind-backtrace do not print a backtrace under Valgrind
475                            (only applies to --disable-optimizations builds)
476   --enable-ossfuzz         Enable building fuzzer tool
477   --libfuzzer=PATH         path to libfuzzer
478   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
479                            in the name) of tests whose result is ignored
480   --enable-linux-perf      enable Linux Performance Monitor API
481
482 NOTE: Object files are built at the place where configure is launched.
483 EOF
484   exit 0
485 }
486
487 if test -t 1 && which tput >/dev/null 2>&1; then
488     ncolors=$(tput colors)
489     if test -n "$ncolors" && test $ncolors -ge 8; then
490         bold_color=$(tput bold)
491         warn_color=$(tput setaf 3)
492         error_color=$(tput setaf 1)
493         reset_color=$(tput sgr0)
494     fi
495     # 72 used instead of 80 since that's the default of pr
496     ncols=$(tput cols)
497 fi
498 : ${ncols:=72}
499
500 log(){
501     echo "$@" >> $logfile
502 }
503
504 log_file(){
505     log BEGIN $1
506     pr -n -t $1 >> $logfile
507     log END $1
508 }
509
510 warn(){
511     log "WARNING: $*"
512     WARNINGS="${WARNINGS}WARNING: $*\n"
513 }
514
515 die(){
516     log "$@"
517     echo "$error_color$bold_color$@$reset_color"
518     cat <<EOF
519
520 If you think configure made a mistake, make sure you are using the latest
521 version from Git.  If the latest version fails, report the problem to the
522 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
523 EOF
524     if disabled logging; then
525         cat <<EOF
526 Rerun configure with logging enabled (do not use --disable-logging), and
527 include the log this produces with your report.
528 EOF
529     else
530         cat <<EOF
531 Include the log file "$logfile" produced by configure as this will help
532 solve the problem.
533 EOF
534     fi
535     exit 1
536 }
537
538 # Avoid locale weirdness, besides we really just want to translate ASCII.
539 toupper(){
540     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
541 }
542
543 tolower(){
544     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
545 }
546
547 c_escape(){
548     echo "$*" | sed 's/["\\]/\\\0/g'
549 }
550
551 sh_quote(){
552     v=$(echo "$1" | sed "s/'/'\\\\''/g")
553     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
554     echo "$v"
555 }
556
557 cleanws(){
558     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
559 }
560
561 filter(){
562     pat=$1
563     shift
564     for v; do
565         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
566     done
567 }
568
569 filter_out(){
570     pat=$1
571     shift
572     for v; do
573         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
574     done
575 }
576
577 map(){
578     m=$1
579     shift
580     for v; do eval $m; done
581 }
582
583 add_suffix(){
584     suffix=$1
585     shift
586     for v; do echo ${v}${suffix}; done
587 }
588
589 remove_suffix(){
590     suffix=$1
591     shift
592     for v; do echo ${v%$suffix}; done
593 }
594
595 set_all(){
596     value=$1
597     shift
598     for var in $*; do
599         eval $var=$value
600     done
601 }
602
603 set_weak(){
604     value=$1
605     shift
606     for var; do
607         eval : \${$var:=$value}
608     done
609 }
610
611 sanitize_var_name(){
612     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
613 }
614
615 set_sanitized(){
616     var=$1
617     shift
618     eval $(sanitize_var_name "$var")='$*'
619 }
620
621 get_sanitized(){
622     eval echo \$$(sanitize_var_name "$1")
623 }
624
625 pushvar(){
626     for pvar in $*; do
627         eval level=\${${pvar}_level:=0}
628         eval ${pvar}_${level}="\$$pvar"
629         eval ${pvar}_level=$(($level+1))
630     done
631 }
632
633 popvar(){
634     for pvar in $*; do
635         eval level=\${${pvar}_level:-0}
636         test $level = 0 && continue
637         eval level=$(($level-1))
638         eval $pvar="\${${pvar}_${level}}"
639         eval ${pvar}_level=$level
640         eval unset ${pvar}_${level}
641     done
642 }
643
644 request(){
645     for var in $*; do
646         eval ${var}_requested=yes
647         eval $var=
648     done
649 }
650
651 warn_if_gets_disabled(){
652     for var in $*; do
653         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
654     done
655 }
656
657 enable(){
658     set_all yes $*
659 }
660
661 disable(){
662     set_all no $*
663 }
664
665 disable_with_reason(){
666     disable $1
667     eval "${1}_disable_reason=\"$2\""
668     if requested $1; then
669         die "ERROR: $1 requested, but $2"
670     fi
671 }
672
673 enable_weak(){
674     set_weak yes $*
675 }
676
677 disable_weak(){
678     set_weak no $*
679 }
680
681 enable_sanitized(){
682     for var; do
683         enable $(sanitize_var_name $var)
684     done
685 }
686
687 disable_sanitized(){
688     for var; do
689         disable $(sanitize_var_name $var)
690     done
691 }
692
693 do_enable_deep(){
694     for var; do
695         enabled $var && continue
696         set -- $var
697         eval enable_deep \$${var}_select
698         var=$1
699         eval enable_deep_weak \$${var}_suggest
700     done
701 }
702
703 enable_deep(){
704     do_enable_deep $*
705     enable $*
706 }
707
708 enable_deep_weak(){
709     for var; do
710         disabled $var && continue
711         set -- $var
712         do_enable_deep $var
713         var=$1
714         enable_weak $var
715     done
716 }
717
718 requested(){
719     test "${1#!}" = "$1" && op="=" || op="!="
720     eval test "x\$${1#!}_requested" $op "xyes"
721 }
722
723 enabled(){
724     test "${1#!}" = "$1" && op="=" || op="!="
725     eval test "x\$${1#!}" $op "xyes"
726 }
727
728 disabled(){
729     test "${1#!}" = "$1" && op="=" || op="!="
730     eval test "x\$${1#!}" $op "xno"
731 }
732
733 enabled_all(){
734     for opt; do
735         enabled $opt || return 1
736     done
737 }
738
739 disabled_all(){
740     for opt; do
741         disabled $opt || return 1
742     done
743 }
744
745 enabled_any(){
746     for opt; do
747         enabled $opt && return 0
748     done
749 }
750
751 disabled_any(){
752     for opt; do
753         disabled $opt && return 0
754     done
755     return 1
756 }
757
758 set_default(){
759     for opt; do
760         eval : \${$opt:=\$${opt}_default}
761     done
762 }
763
764 is_in(){
765     value=$1
766     shift
767     for var in $*; do
768         [ $var = $value ] && return 0
769     done
770     return 1
771 }
772
773 # The cfg loop is very hot (several thousands iterations), and in bash also
774 # potentialy quite slow. Try to abort the iterations early, preferably without
775 # calling functions. 70%+ of the time cfg is already done or without deps.
776 check_deps(){
777     for cfg; do
778         eval [ x\$${cfg}_checking = xdone ] && continue
779         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
780
781         eval "
782         dep_all=\$${cfg}_deps
783         dep_any=\$${cfg}_deps_any
784         dep_con=\$${cfg}_conflict
785         dep_sel=\$${cfg}_select
786         dep_sgs=\$${cfg}_suggest
787         dep_ifa=\$${cfg}_if
788         dep_ifn=\$${cfg}_if_any
789         "
790
791         # most of the time here $cfg has no deps - avoid costly no-op work
792         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
793             eval ${cfg}_checking=inprogress
794
795             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
796             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
797             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
798
799             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
800             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
801             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
802             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
803             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
804             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
805
806             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
807
808             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
809                 # filter out library deps, these do not belong in extralibs
810                 is_in $dep $LIBRARY_LIST && continue
811                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
812             done
813         fi
814
815         eval ${cfg}_checking=done
816     done
817 }
818
819 print_config(){
820     pfx=$1
821     files=$2
822     shift 2
823     map 'eval echo "$v \${$v:-no}"' "$@" |
824     awk "BEGIN { split(\"$files\", files) }
825         {
826             c = \"$pfx\" toupper(\$1);
827             v = \$2;
828             sub(/yes/, 1, v);
829             sub(/no/,  0, v);
830             for (f in files) {
831                 file = files[f];
832                 if (file ~ /\\.h\$/) {
833                     printf(\"#define %s %d\\n\", c, v) >>file;
834                 } else if (file ~ /\\.asm\$/) {
835                     printf(\"%%define %s %d\\n\", c, v) >>file;
836                 } else if (file ~ /\\.mak\$/) {
837                     n = -v ? \"\" : \"!\";
838                     printf(\"%s%s=yes\\n\", n, c) >>file;
839                 } else if (file ~ /\\.texi\$/) {
840                     pre = -v ? \"\" : \"@c \";
841                     yesno = \$2;
842                     c2 = tolower(c);
843                     gsub(/_/, \"-\", c2);
844                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
845                 }
846             }
847         }"
848 }
849
850 print_enabled(){
851     suf=$1
852     shift
853     for v; do
854         enabled $v && printf "%s\n" ${v%$suf}
855     done
856 }
857
858 append(){
859     var=$1
860     shift
861     eval "$var=\"\$$var $*\""
862 }
863
864 prepend(){
865     var=$1
866     shift
867     eval "$var=\"$* \$$var\""
868 }
869
870 reverse () {
871     eval '
872         reverse_out=
873         for v in $'$1'; do
874             reverse_out="$v $reverse_out"
875         done
876         '$1'=$reverse_out
877     '
878 }
879
880 # keeps the last occurence of each non-unique item
881 unique(){
882     unique_out=
883     eval unique_in=\$$1
884     reverse unique_in
885     for v in $unique_in; do
886         # " $unique_out" +space such that every item is surrounded with spaces
887         case " $unique_out" in *" $v "*) continue; esac  # already in list
888         unique_out="$unique_out$v "
889     done
890     reverse unique_out
891     eval $1=\$unique_out
892 }
893
894 resolve(){
895     resolve_out=
896     eval resolve_in=\$$1
897     for v in $resolve_in; do
898         eval 'resolve_out="$resolve_out$'$v' "'
899     done
900     eval $1=\$resolve_out
901 }
902
903 add_cppflags(){
904     append CPPFLAGS "$@"
905 }
906
907 add_cflags(){
908     append CFLAGS $($cflags_filter "$@")
909 }
910
911 add_cflags_headers(){
912     append CFLAGS_HEADERS $($cflags_filter "$@")
913 }
914
915 add_cxxflags(){
916     append CXXFLAGS $($cflags_filter "$@")
917 }
918
919 add_objcflags(){
920     append OBJCFLAGS $($objcflags_filter "$@")
921 }
922
923 add_asflags(){
924     append ASFLAGS $($asflags_filter "$@")
925 }
926
927 add_ldflags(){
928     append LDFLAGS $($ldflags_filter "$@")
929 }
930
931 add_ldexeflags(){
932     append LDEXEFLAGS $($ldflags_filter "$@")
933 }
934
935 add_ldsoflags(){
936     append LDSOFLAGS $($ldflags_filter "$@")
937 }
938
939 add_extralibs(){
940     prepend extralibs $($ldflags_filter "$@")
941 }
942
943 add_stripflags(){
944     append ASMSTRIPFLAGS "$@"
945 }
946
947 add_host_cppflags(){
948     append host_cppflags "$@"
949 }
950
951 add_host_cflags(){
952     append host_cflags $($host_cflags_filter "$@")
953 }
954
955 add_host_ldflags(){
956     append host_ldflags $($host_ldflags_filter "$@")
957 }
958
959 add_compat(){
960     append compat_objs $1
961     shift
962     map 'add_cppflags -D$v' "$@"
963 }
964
965 test_cmd(){
966     log "$@"
967     "$@" >> $logfile 2>&1
968 }
969
970 test_stat(){
971     log test_stat "$@"
972     stat "$1" >> $logfile 2>&1
973 }
974
975 cc_e(){
976     eval printf '%s\\n' $CC_E
977 }
978
979 cc_o(){
980     eval printf '%s\\n' $CC_O
981 }
982
983 as_o(){
984     eval printf '%s\\n' $AS_O
985 }
986
987 x86asm_o(){
988     eval printf '%s\\n' $X86ASM_O
989 }
990
991 ld_o(){
992     eval printf '%s\\n' $LD_O
993 }
994
995 hostcc_e(){
996     eval printf '%s\\n' $HOSTCC_E
997 }
998
999 hostcc_o(){
1000     eval printf '%s\\n' $HOSTCC_O
1001 }
1002
1003 nvcc_o(){
1004     eval printf '%s\\n' $NVCC_O
1005 }
1006
1007 test_cc(){
1008     log test_cc "$@"
1009     cat > $TMPC
1010     log_file $TMPC
1011     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1012 }
1013
1014 test_cxx(){
1015     log test_cxx "$@"
1016     cat > $TMPCPP
1017     log_file $TMPCPP
1018     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1019 }
1020
1021 test_objcc(){
1022     log test_objcc "$@"
1023     cat > $TMPM
1024     log_file $TMPM
1025     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1026 }
1027
1028 test_nvcc(){
1029     log test_nvcc "$@"
1030     cat > $TMPCU
1031     log_file $TMPCU
1032     tmpcu_=$TMPCU
1033     tmpo_=$TMPO
1034     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1035     test_cmd $nvcc -ptx $NVCCFLAGS "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1036 }
1037
1038 check_nvcc() {
1039     log check_nvcc "$@"
1040     test_nvcc <<EOF
1041 extern "C" {
1042     __global__ void hello(unsigned char *data) {}
1043 }
1044 EOF
1045 }
1046
1047 test_cpp(){
1048     log test_cpp "$@"
1049     cat > $TMPC
1050     log_file $TMPC
1051     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1052 }
1053
1054 test_as(){
1055     log test_as "$@"
1056     cat > $TMPS
1057     log_file $TMPS
1058     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1059 }
1060
1061 test_x86asm(){
1062     log test_x86asm "$@"
1063     echo "$1" > $TMPASM
1064     log_file $TMPASM
1065     shift
1066     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1067 }
1068
1069 check_cmd(){
1070     log check_cmd "$@"
1071     cmd=$1
1072     disabled $cmd && return
1073     disable $cmd
1074     test_cmd $@ && enable $cmd
1075 }
1076
1077 check_as(){
1078     log check_as "$@"
1079     name=$1
1080     code=$2
1081     shift 2
1082     disable $name
1083     test_as $@ <<EOF && enable $name
1084 $code
1085 EOF
1086 }
1087
1088 check_inline_asm(){
1089     log check_inline_asm "$@"
1090     name="$1"
1091     code="$2"
1092     shift 2
1093     disable $name
1094     test_cc "$@" <<EOF && enable $name
1095 void foo(void){ __asm__ volatile($code); }
1096 EOF
1097 }
1098
1099 check_inline_asm_flags(){
1100     log check_inline_asm_flags "$@"
1101     name="$1"
1102     code="$2"
1103     flags=''
1104     shift 2
1105     while [ "$1" != "" ]; do
1106       append flags $1
1107       shift
1108     done;
1109     disable $name
1110     cat > $TMPC <<EOF
1111 void foo(void){ __asm__ volatile($code); }
1112 EOF
1113     log_file $TMPC
1114     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1115     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1116 }
1117
1118 check_insn(){
1119     log check_insn "$@"
1120     check_inline_asm ${1}_inline "\"$2\""
1121     check_as ${1}_external "$2"
1122 }
1123
1124 check_x86asm(){
1125     log check_x86asm "$@"
1126     name=$1
1127     shift
1128     disable $name
1129     test_x86asm "$@" && enable $name
1130 }
1131
1132 test_ld(){
1133     log test_ld "$@"
1134     type=$1
1135     shift 1
1136     flags=$(filter_out '-l*|*.so' $@)
1137     libs=$(filter '-l*|*.so' $@)
1138     test_$type $($cflags_filter $flags) || return
1139     flags=$($ldflags_filter $flags)
1140     libs=$($ldflags_filter $libs)
1141     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1142 }
1143
1144 check_ld(){
1145     log check_ld "$@"
1146     type=$1
1147     name=$2
1148     shift 2
1149     disable $name
1150     test_ld $type $@ && enable $name
1151 }
1152
1153 print_include(){
1154     hdr=$1
1155     test "${hdr%.h}" = "${hdr}" &&
1156         echo "#include $hdr"    ||
1157         echo "#include <$hdr>"
1158 }
1159
1160 test_code(){
1161     log test_code "$@"
1162     check=$1
1163     headers=$2
1164     code=$3
1165     shift 3
1166     {
1167         for hdr in $headers; do
1168             print_include $hdr
1169         done
1170         echo "int main(void) { $code; return 0; }"
1171     } | test_$check "$@"
1172 }
1173
1174 check_cppflags(){
1175     log check_cppflags "$@"
1176     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1177 #include <stdlib.h>
1178 EOF
1179 }
1180
1181 test_cflags(){
1182     log test_cflags "$@"
1183     set -- $($cflags_filter "$@")
1184     test_cc "$@" <<EOF
1185 int x;
1186 EOF
1187 }
1188
1189 check_cflags(){
1190     log check_cflags "$@"
1191     test_cflags "$@" && add_cflags "$@"
1192 }
1193
1194 check_cxxflags(){
1195     log check_cxxflags "$@"
1196     set -- $($cflags_filter "$@")
1197     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1198 int x;
1199 EOF
1200 }
1201
1202 test_objcflags(){
1203     log test_objcflags "$@"
1204     set -- $($objcflags_filter "$@")
1205     test_objcc "$@" <<EOF
1206 int x;
1207 EOF
1208 }
1209
1210 check_objcflags(){
1211     log check_objcflags "$@"
1212     test_objcflags "$@" && add_objcflags "$@"
1213 }
1214
1215 test_ldflags(){
1216     log test_ldflags "$@"
1217     set -- $($ldflags_filter "$@")
1218     test_ld "cc" "$@" <<EOF
1219 int main(void){ return 0; }
1220 EOF
1221 }
1222
1223 check_ldflags(){
1224     log check_ldflags "$@"
1225     test_ldflags "$@" && add_ldflags "$@"
1226 }
1227
1228 test_stripflags(){
1229     log test_stripflags "$@"
1230     # call test_cc to get a fresh TMPO
1231     test_cc <<EOF
1232 int main(void) { return 0; }
1233 EOF
1234     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1235 }
1236
1237 check_stripflags(){
1238     log check_stripflags "$@"
1239     test_stripflags "$@" && add_stripflags "$@"
1240 }
1241
1242 check_headers(){
1243     log check_headers "$@"
1244     headers=$1
1245     shift
1246     disable_sanitized $headers
1247     {
1248         for hdr in $headers; do
1249             print_include $hdr
1250         done
1251         echo "int x;"
1252     } | test_cpp "$@" && enable_sanitized $headers
1253 }
1254
1255 check_header_objcc(){
1256     log check_header_objcc "$@"
1257     rm -f -- "$TMPO"
1258     header=$1
1259     shift
1260     disable_sanitized $header
1261     {
1262        echo "#include <$header>"
1263        echo "int main(void) { return 0; }"
1264     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1265 }
1266
1267 check_apple_framework(){
1268     log check_apple_framework "$@"
1269     framework="$1"
1270     name="$(tolower $framework)"
1271     header="${framework}/${framework}.h"
1272     disable $name
1273     check_header_objcc $header &&
1274         enable $name && eval ${name}_extralibs='"-framework $framework"'
1275 }
1276
1277 check_func(){
1278     log check_func "$@"
1279     func=$1
1280     shift
1281     disable $func
1282     test_ld "cc" "$@" <<EOF && enable $func
1283 extern int $func();
1284 int main(void){ $func(); }
1285 EOF
1286 }
1287
1288 check_complexfunc(){
1289     log check_complexfunc "$@"
1290     func=$1
1291     narg=$2
1292     shift 2
1293     test $narg = 2 && args="f, g" || args="f * I"
1294     disable $func
1295     test_ld "cc" "$@" <<EOF && enable $func
1296 #include <complex.h>
1297 #include <math.h>
1298 float foo(complex float f, complex float g) { return $func($args); }
1299 int main(void){ return (int) foo; }
1300 EOF
1301 }
1302
1303 check_mathfunc(){
1304     log check_mathfunc "$@"
1305     func=$1
1306     narg=$2
1307     shift 2
1308     test $narg = 2 && args="f, g" || args="f"
1309     disable $func
1310     test_ld "cc" "$@" <<EOF && enable $func
1311 #include <math.h>
1312 float foo(float f, float g) { return $func($args); }
1313 int main(void){ return (int) foo; }
1314 EOF
1315 }
1316
1317 check_func_headers(){
1318     log check_func_headers "$@"
1319     headers=$1
1320     funcs=$2
1321     shift 2
1322     {
1323         for hdr in $headers; do
1324             print_include $hdr
1325         done
1326         echo "#include <stdint.h>"
1327         for func in $funcs; do
1328             echo "long check_$func(void) { return (long) $func; }"
1329         done
1330         echo "int main(void) { int ret = 0;"
1331         # LTO could optimize out the test functions without this
1332         for func in $funcs; do
1333             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1334         done
1335         echo "return ret; }"
1336     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1337 }
1338
1339 check_class_headers_cpp(){
1340     log check_class_headers_cpp "$@"
1341     headers=$1
1342     classes=$2
1343     shift 2
1344     {
1345         for hdr in $headers; do
1346             echo "#include <$hdr>"
1347         done
1348         echo "int main(void) { "
1349         i=1
1350         for class in $classes; do
1351             echo "$class obj$i;"
1352             i=$(expr $i + 1)
1353         done
1354         echo "return 0; }"
1355     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1356 }
1357
1358 test_cpp_condition(){
1359     log test_cpp_condition "$@"
1360     header=$1
1361     condition=$2
1362     shift 2
1363     test_cpp "$@" <<EOF
1364 #include <$header>
1365 #if !($condition)
1366 #error "unsatisfied condition: $condition"
1367 #endif
1368 EOF
1369 }
1370
1371 check_cpp_condition(){
1372     log check_cpp_condition "$@"
1373     name=$1
1374     shift 1
1375     disable $name
1376     test_cpp_condition "$@" && enable $name
1377 }
1378
1379 test_cflags_cc(){
1380     log test_cflags_cc "$@"
1381     flags=$1
1382     header=$2
1383     condition=$3
1384     shift 3
1385     set -- $($cflags_filter "$flags")
1386     test_cc "$@" <<EOF
1387 #include <$header>
1388 #if !($condition)
1389 #error "unsatisfied condition: $condition"
1390 #endif
1391 EOF
1392 }
1393
1394 check_lib(){
1395     log check_lib "$@"
1396     name="$1"
1397     headers="$2"
1398     funcs="$3"
1399     shift 3
1400     disable $name
1401     check_func_headers "$headers" "$funcs" "$@" &&
1402         enable $name && eval ${name}_extralibs="\$@"
1403 }
1404
1405 check_lib_cpp(){
1406     log check_lib_cpp "$@"
1407     name="$1"
1408     headers="$2"
1409     classes="$3"
1410     shift 3
1411     disable $name
1412     check_class_headers_cpp "$headers" "$classes" "$@" &&
1413         enable $name && eval ${name}_extralibs="\$@"
1414 }
1415
1416 test_pkg_config(){
1417     log test_pkg_config "$@"
1418     name="$1"
1419     pkg_version="$2"
1420     pkg="${2%% *}"
1421     headers="$3"
1422     funcs="$4"
1423     shift 4
1424     disable $name
1425     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1426     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1427     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1428     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1429         enable $name &&
1430         set_sanitized "${name}_cflags"    $pkg_cflags &&
1431         set_sanitized "${name}_extralibs" $pkg_libs
1432 }
1433
1434 check_pkg_config(){
1435     log check_pkg_config "$@"
1436     name="$1"
1437     test_pkg_config "$@" &&
1438         eval add_cflags \$${name}_cflags
1439 }
1440
1441 test_exec(){
1442     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1443 }
1444
1445 check_exec_crash(){
1446     log check_exec_crash "$@"
1447     code=$(cat)
1448
1449     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1450     # are safe but may not be available everywhere.  Thus we use
1451     # raise(SIGTERM) instead.  The check is run in a subshell so we
1452     # can redirect the "Terminated" message from the shell.  SIGBUS
1453     # is not defined by standard C so it is used conditionally.
1454
1455     (test_exec "$@") >> $logfile 2>&1 <<EOF
1456 #include <signal.h>
1457 static void sighandler(int sig){
1458     raise(SIGTERM);
1459 }
1460 int foo(void){
1461     $code
1462 }
1463 int (*func_ptr)(void) = foo;
1464 int main(void){
1465     signal(SIGILL, sighandler);
1466     signal(SIGFPE, sighandler);
1467     signal(SIGSEGV, sighandler);
1468 #ifdef SIGBUS
1469     signal(SIGBUS, sighandler);
1470 #endif
1471     return func_ptr();
1472 }
1473 EOF
1474 }
1475
1476 check_type(){
1477     log check_type "$@"
1478     headers=$1
1479     type=$2
1480     shift 2
1481     disable_sanitized "$type"
1482     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1483 }
1484
1485 check_struct(){
1486     log check_struct "$@"
1487     headers=$1
1488     struct=$2
1489     member=$3
1490     shift 3
1491     disable_sanitized "${struct}_${member}"
1492     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1493         enable_sanitized "${struct}_${member}"
1494 }
1495
1496 check_builtin(){
1497     log check_builtin "$@"
1498     name=$1
1499     headers=$2
1500     builtin=$3
1501     shift 3
1502     disable "$name"
1503     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1504 }
1505
1506 check_compile_assert(){
1507     log check_compile_assert "$@"
1508     name=$1
1509     headers=$2
1510     condition=$3
1511     shift 3
1512     disable "$name"
1513     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1514 }
1515
1516 check_cc(){
1517     log check_cc "$@"
1518     name=$1
1519     shift
1520     disable "$name"
1521     test_code cc "$@" && enable "$name"
1522 }
1523
1524 require(){
1525     log require "$@"
1526     name_version="$1"
1527     name="${1%% *}"
1528     shift
1529     check_lib $name "$@" || die "ERROR: $name_version not found"
1530 }
1531
1532 require_cc(){
1533     log require_cc "$@"
1534     name="$1"
1535     check_cc "$@" || die "ERROR: $name failed"
1536 }
1537
1538 require_cpp(){
1539     name="$1"
1540     headers="$2"
1541     classes="$3"
1542     shift 3
1543     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1544 }
1545
1546 require_headers(){
1547     log require_headers "$@"
1548     headers="$1"
1549     check_headers "$@" || die "ERROR: $headers not found"
1550 }
1551
1552 require_cpp_condition(){
1553     log require_cpp_condition "$@"
1554     condition="$3"
1555     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1556 }
1557
1558 require_pkg_config(){
1559     log require_pkg_config "$@"
1560     pkg_version="$2"
1561     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1562 }
1563
1564 test_host_cc(){
1565     log test_host_cc "$@"
1566     cat > $TMPC
1567     log_file $TMPC
1568     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1569 }
1570
1571 test_host_cpp(){
1572     log test_host_cpp "$@"
1573     cat > $TMPC
1574     log_file $TMPC
1575     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1576 }
1577
1578 check_host_cppflags(){
1579     log check_host_cppflags "$@"
1580     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1581 #include <stdlib.h>
1582 EOF
1583 }
1584
1585 check_host_cflags(){
1586     log check_host_cflags "$@"
1587     set -- $($host_cflags_filter "$@")
1588     test_host_cc "$@" <<EOF && append host_cflags "$@"
1589 int x;
1590 EOF
1591 }
1592
1593 test_host_cpp_condition(){
1594     log test_host_cpp_condition "$@"
1595     header=$1
1596     condition=$2
1597     shift 2
1598     test_host_cpp "$@" <<EOF
1599 #include <$header>
1600 #if !($condition)
1601 #error "unsatisfied condition: $condition"
1602 #endif
1603 EOF
1604 }
1605
1606 check_host_cpp_condition(){
1607     log check_host_cpp_condition "$@"
1608     name=$1
1609     shift 1
1610     disable $name
1611     test_host_cpp_condition "$@" && enable $name
1612 }
1613
1614 cp_if_changed(){
1615     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1616     mkdir -p "$(dirname $2)"
1617     cp -f "$1" "$2"
1618 }
1619
1620 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1621 # system-dependent things.
1622
1623 AVCODEC_COMPONENTS="
1624     bsfs
1625     decoders
1626     encoders
1627     hwaccels
1628     parsers
1629 "
1630
1631 AVDEVICE_COMPONENTS="
1632     indevs
1633     outdevs
1634 "
1635
1636 AVFILTER_COMPONENTS="
1637     filters
1638 "
1639
1640 AVFORMAT_COMPONENTS="
1641     demuxers
1642     muxers
1643     protocols
1644 "
1645
1646 COMPONENT_LIST="
1647     $AVCODEC_COMPONENTS
1648     $AVDEVICE_COMPONENTS
1649     $AVFILTER_COMPONENTS
1650     $AVFORMAT_COMPONENTS
1651 "
1652
1653 EXAMPLE_LIST="
1654     avio_dir_cmd_example
1655     avio_reading_example
1656     decode_audio_example
1657     decode_video_example
1658     demuxing_decoding_example
1659     encode_audio_example
1660     encode_video_example
1661     extract_mvs_example
1662     filter_audio_example
1663     filtering_audio_example
1664     filtering_video_example
1665     http_multiclient_example
1666     hw_decode_example
1667     metadata_example
1668     muxing_example
1669     qsvdec_example
1670     remuxing_example
1671     resampling_audio_example
1672     scaling_video_example
1673     transcode_aac_example
1674     transcoding_example
1675     vaapi_encode_example
1676     vaapi_transcode_example
1677 "
1678
1679 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1680     alsa
1681     appkit
1682     avfoundation
1683     bzlib
1684     coreimage
1685     iconv
1686     libxcb
1687     libxcb_shm
1688     libxcb_shape
1689     libxcb_xfixes
1690     lzma
1691     schannel
1692     sdl2
1693     securetransport
1694     sndio
1695     xlib
1696     zlib
1697 "
1698
1699 EXTERNAL_LIBRARY_GPL_LIST="
1700     avisynth
1701     frei0r
1702     libcdio
1703     libdavs2
1704     librubberband
1705     libvidstab
1706     libx264
1707     libx265
1708     libxavs
1709     libxavs2
1710     libxvid
1711 "
1712
1713 EXTERNAL_LIBRARY_NONFREE_LIST="
1714     decklink
1715     libfdk_aac
1716     openssl
1717     libtls
1718 "
1719
1720 EXTERNAL_LIBRARY_VERSION3_LIST="
1721     gmp
1722     libaribb24
1723     liblensfun
1724     libopencore_amrnb
1725     libopencore_amrwb
1726     libvmaf
1727     libvo_amrwbenc
1728     mbedtls
1729     rkmpp
1730 "
1731
1732 EXTERNAL_LIBRARY_GPLV3_LIST="
1733     libsmbclient
1734 "
1735
1736 EXTERNAL_LIBRARY_LIST="
1737     $EXTERNAL_LIBRARY_GPL_LIST
1738     $EXTERNAL_LIBRARY_NONFREE_LIST
1739     $EXTERNAL_LIBRARY_VERSION3_LIST
1740     $EXTERNAL_LIBRARY_GPLV3_LIST
1741     chromaprint
1742     gcrypt
1743     gnutls
1744     jni
1745     ladspa
1746     libaom
1747     libass
1748     libbluray
1749     libbs2b
1750     libcaca
1751     libcelt
1752     libcodec2
1753     libdav1d
1754     libdc1394
1755     libdrm
1756     libflite
1757     libfontconfig
1758     libfreetype
1759     libfribidi
1760     libgme
1761     libgsm
1762     libiec61883
1763     libilbc
1764     libjack
1765     libklvanc
1766     libkvazaar
1767     libmodplug
1768     libmp3lame
1769     libmysofa
1770     libopencv
1771     libopenh264
1772     libopenjpeg
1773     libopenmpt
1774     libopus
1775     libpulse
1776     librsvg
1777     librtmp
1778     libshine
1779     libsmbclient
1780     libsnappy
1781     libsoxr
1782     libspeex
1783     libsrt
1784     libssh
1785     libtensorflow
1786     libtesseract
1787     libtheora
1788     libtwolame
1789     libv4l2
1790     libvorbis
1791     libvpx
1792     libwavpack
1793     libwebp
1794     libxml2
1795     libzimg
1796     libzmq
1797     libzvbi
1798     lv2
1799     mediacodec
1800     openal
1801     opengl
1802     vapoursynth
1803 "
1804
1805 HWACCEL_AUTODETECT_LIBRARY_LIST="
1806     amf
1807     audiotoolbox
1808     crystalhd
1809     cuda
1810     cuvid
1811     d3d11va
1812     dxva2
1813     ffnvcodec
1814     nvdec
1815     nvenc
1816     vaapi
1817     vdpau
1818     videotoolbox
1819     v4l2_m2m
1820     xvmc
1821 "
1822
1823 # catchall list of things that require external libs to link
1824 EXTRALIBS_LIST="
1825     cpu_init
1826     cws2fws
1827 "
1828
1829 HWACCEL_LIBRARY_NONFREE_LIST="
1830     cuda_nvcc
1831     cuda_sdk
1832     libnpp
1833 "
1834
1835 HWACCEL_LIBRARY_LIST="
1836     $HWACCEL_LIBRARY_NONFREE_LIST
1837     libmfx
1838     mmal
1839     omx
1840     opencl
1841 "
1842
1843 DOCUMENT_LIST="
1844     doc
1845     htmlpages
1846     manpages
1847     podpages
1848     txtpages
1849 "
1850
1851 FEATURE_LIST="
1852     ftrapv
1853     gray
1854     hardcoded_tables
1855     omx_rpi
1856     runtime_cpudetect
1857     safe_bitstream_reader
1858     shared
1859     small
1860     static
1861     swscale_alpha
1862 "
1863
1864 # this list should be kept in linking order
1865 LIBRARY_LIST="
1866     avdevice
1867     avfilter
1868     swscale
1869     postproc
1870     avformat
1871     avcodec
1872     swresample
1873     avresample
1874     avutil
1875 "
1876
1877 LICENSE_LIST="
1878     gpl
1879     nonfree
1880     version3
1881 "
1882
1883 PROGRAM_LIST="
1884     ffplay
1885     ffprobe
1886     ffmpeg
1887 "
1888
1889 SUBSYSTEM_LIST="
1890     dct
1891     dwt
1892     error_resilience
1893     faan
1894     fast_unaligned
1895     fft
1896     lsp
1897     lzo
1898     mdct
1899     pixelutils
1900     network
1901     rdft
1902 "
1903
1904 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1905 CONFIG_LIST="
1906     $DOCUMENT_LIST
1907     $EXAMPLE_LIST
1908     $EXTERNAL_LIBRARY_LIST
1909     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1910     $HWACCEL_LIBRARY_LIST
1911     $HWACCEL_AUTODETECT_LIBRARY_LIST
1912     $FEATURE_LIST
1913     $LICENSE_LIST
1914     $LIBRARY_LIST
1915     $PROGRAM_LIST
1916     $SUBSYSTEM_LIST
1917     autodetect
1918     fontconfig
1919     linux_perf
1920     memory_poisoning
1921     neon_clobber_test
1922     ossfuzz
1923     pic
1924     thumb
1925     valgrind_backtrace
1926     xmm_clobber_test
1927     $COMPONENT_LIST
1928 "
1929
1930 THREADS_LIST="
1931     pthreads
1932     os2threads
1933     w32threads
1934 "
1935
1936 ATOMICS_LIST="
1937     atomics_gcc
1938     atomics_suncc
1939     atomics_win32
1940 "
1941
1942 AUTODETECT_LIBS="
1943     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1944     $HWACCEL_AUTODETECT_LIBRARY_LIST
1945     $THREADS_LIST
1946 "
1947
1948 ARCH_LIST="
1949     aarch64
1950     alpha
1951     arm
1952     avr32
1953     avr32_ap
1954     avr32_uc
1955     bfin
1956     ia64
1957     m68k
1958     mips
1959     mips64
1960     parisc
1961     ppc
1962     ppc64
1963     s390
1964     sh4
1965     sparc
1966     sparc64
1967     tilegx
1968     tilepro
1969     tomi
1970     x86
1971     x86_32
1972     x86_64
1973 "
1974
1975 ARCH_EXT_LIST_ARM="
1976     armv5te
1977     armv6
1978     armv6t2
1979     armv8
1980     neon
1981     vfp
1982     vfpv3
1983     setend
1984 "
1985
1986 ARCH_EXT_LIST_MIPS="
1987     mipsfpu
1988     mips32r2
1989     mips32r5
1990     mips64r2
1991     mips32r6
1992     mips64r6
1993     mipsdsp
1994     mipsdspr2
1995     msa
1996 "
1997
1998 ARCH_EXT_LIST_LOONGSON="
1999     loongson2
2000     loongson3
2001     mmi
2002 "
2003
2004 ARCH_EXT_LIST_X86_SIMD="
2005     aesni
2006     amd3dnow
2007     amd3dnowext
2008     avx
2009     avx2
2010     avx512
2011     fma3
2012     fma4
2013     mmx
2014     mmxext
2015     sse
2016     sse2
2017     sse3
2018     sse4
2019     sse42
2020     ssse3
2021     xop
2022 "
2023
2024 ARCH_EXT_LIST_PPC="
2025     altivec
2026     dcbzl
2027     ldbrx
2028     power8
2029     ppc4xx
2030     vsx
2031 "
2032
2033 ARCH_EXT_LIST_X86="
2034     $ARCH_EXT_LIST_X86_SIMD
2035     cpunop
2036     i686
2037 "
2038
2039 ARCH_EXT_LIST="
2040     $ARCH_EXT_LIST_ARM
2041     $ARCH_EXT_LIST_PPC
2042     $ARCH_EXT_LIST_X86
2043     $ARCH_EXT_LIST_MIPS
2044     $ARCH_EXT_LIST_LOONGSON
2045 "
2046
2047 ARCH_FEATURES="
2048     aligned_stack
2049     fast_64bit
2050     fast_clz
2051     fast_cmov
2052     local_aligned
2053     simd_align_16
2054     simd_align_32
2055     simd_align_64
2056 "
2057
2058 BUILTIN_LIST="
2059     atomic_cas_ptr
2060     machine_rw_barrier
2061     MemoryBarrier
2062     mm_empty
2063     rdtsc
2064     sem_timedwait
2065     sync_val_compare_and_swap
2066 "
2067 HAVE_LIST_CMDLINE="
2068     inline_asm
2069     symver
2070     x86asm
2071 "
2072
2073 HAVE_LIST_PUB="
2074     bigendian
2075     fast_unaligned
2076 "
2077
2078 HEADERS_LIST="
2079     arpa_inet_h
2080     asm_types_h
2081     cdio_paranoia_h
2082     cdio_paranoia_paranoia_h
2083     cuda_h
2084     dispatch_dispatch_h
2085     dev_bktr_ioctl_bt848_h
2086     dev_bktr_ioctl_meteor_h
2087     dev_ic_bt8xx_h
2088     dev_video_bktr_ioctl_bt848_h
2089     dev_video_meteor_ioctl_meteor_h
2090     direct_h
2091     dirent_h
2092     dxgidebug_h
2093     dxva_h
2094     ES2_gl_h
2095     gsm_h
2096     io_h
2097     linux_perf_event_h
2098     machine_ioctl_bt848_h
2099     machine_ioctl_meteor_h
2100     malloc_h
2101     opencv2_core_core_c_h
2102     OpenGL_gl3_h
2103     poll_h
2104     sys_param_h
2105     sys_resource_h
2106     sys_select_h
2107     sys_soundcard_h
2108     sys_time_h
2109     sys_un_h
2110     sys_videoio_h
2111     termios_h
2112     udplite_h
2113     unistd_h
2114     valgrind_valgrind_h
2115     windows_h
2116     winsock2_h
2117 "
2118
2119 INTRINSICS_LIST="
2120     intrinsics_neon
2121 "
2122
2123 COMPLEX_FUNCS="
2124     cabs
2125     cexp
2126 "
2127
2128 MATH_FUNCS="
2129     atanf
2130     atan2f
2131     cbrt
2132     cbrtf
2133     copysign
2134     cosf
2135     erf
2136     exp2
2137     exp2f
2138     expf
2139     hypot
2140     isfinite
2141     isinf
2142     isnan
2143     ldexpf
2144     llrint
2145     llrintf
2146     log2
2147     log2f
2148     log10f
2149     lrint
2150     lrintf
2151     powf
2152     rint
2153     round
2154     roundf
2155     sinf
2156     trunc
2157     truncf
2158 "
2159
2160 SYSTEM_FEATURES="
2161     dos_paths
2162     libc_msvcrt
2163     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2164     section_data_rel_ro
2165     threads
2166     uwp
2167     winrt
2168 "
2169
2170 SYSTEM_FUNCS="
2171     access
2172     aligned_malloc
2173     arc4random
2174     clock_gettime
2175     closesocket
2176     CommandLineToArgvW
2177     fcntl
2178     getaddrinfo
2179     gethrtime
2180     getopt
2181     GetProcessAffinityMask
2182     GetProcessMemoryInfo
2183     GetProcessTimes
2184     getrusage
2185     GetSystemTimeAsFileTime
2186     gettimeofday
2187     glob
2188     glXGetProcAddress
2189     gmtime_r
2190     inet_aton
2191     isatty
2192     kbhit
2193     localtime_r
2194     lstat
2195     lzo1x_999_compress
2196     mach_absolute_time
2197     MapViewOfFile
2198     memalign
2199     mkstemp
2200     mmap
2201     mprotect
2202     nanosleep
2203     PeekNamedPipe
2204     posix_memalign
2205     pthread_cancel
2206     sched_getaffinity
2207     SecItemImport
2208     SetConsoleTextAttribute
2209     SetConsoleCtrlHandler
2210     setmode
2211     setrlimit
2212     Sleep
2213     strerror_r
2214     sysconf
2215     sysctl
2216     usleep
2217     UTGetOSTypeFromString
2218     VirtualAlloc
2219     wglGetProcAddress
2220 "
2221
2222 SYSTEM_LIBRARIES="
2223     bcrypt
2224     vaapi_drm
2225     vaapi_x11
2226     vdpau_x11
2227 "
2228
2229 TOOLCHAIN_FEATURES="
2230     as_arch_directive
2231     as_dn_directive
2232     as_fpu_directive
2233     as_func
2234     as_object_arch
2235     asm_mod_q
2236     blocks_extension
2237     ebp_available
2238     ebx_available
2239     gnu_as
2240     gnu_windres
2241     ibm_asm
2242     inline_asm_direct_symbol_refs
2243     inline_asm_labels
2244     inline_asm_nonlocal_labels
2245     pragma_deprecated
2246     rsync_contimeout
2247     symver_asm_label
2248     symver_gnu_asm
2249     vfp_args
2250     xform_asm
2251     xmm_clobbers
2252 "
2253
2254 TYPES_LIST="
2255     kCMVideoCodecType_HEVC
2256     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2257     socklen_t
2258     struct_addrinfo
2259     struct_group_source_req
2260     struct_ip_mreq_source
2261     struct_ipv6_mreq
2262     struct_msghdr_msg_flags
2263     struct_pollfd
2264     struct_rusage_ru_maxrss
2265     struct_sctp_event_subscribe
2266     struct_sockaddr_in6
2267     struct_sockaddr_sa_len
2268     struct_sockaddr_storage
2269     struct_stat_st_mtim_tv_nsec
2270     struct_v4l2_frmivalenum_discrete
2271 "
2272
2273 HAVE_LIST="
2274     $ARCH_EXT_LIST
2275     $(add_suffix _external $ARCH_EXT_LIST)
2276     $(add_suffix _inline   $ARCH_EXT_LIST)
2277     $ARCH_FEATURES
2278     $BUILTIN_LIST
2279     $COMPLEX_FUNCS
2280     $HAVE_LIST_CMDLINE
2281     $HAVE_LIST_PUB
2282     $HEADERS_LIST
2283     $INTRINSICS_LIST
2284     $MATH_FUNCS
2285     $SYSTEM_FEATURES
2286     $SYSTEM_FUNCS
2287     $SYSTEM_LIBRARIES
2288     $THREADS_LIST
2289     $TOOLCHAIN_FEATURES
2290     $TYPES_LIST
2291     makeinfo
2292     makeinfo_html
2293     opencl_d3d11
2294     opencl_drm_arm
2295     opencl_drm_beignet
2296     opencl_dxva2
2297     opencl_vaapi_beignet
2298     opencl_vaapi_intel_media
2299     perl
2300     pod2man
2301     texi2html
2302 "
2303
2304 # options emitted with CONFIG_ prefix but not available on the command line
2305 CONFIG_EXTRA="
2306     aandcttables
2307     ac3dsp
2308     adts_header
2309     audio_frame_queue
2310     audiodsp
2311     blockdsp
2312     bswapdsp
2313     cabac
2314     cbs
2315     cbs_av1
2316     cbs_h264
2317     cbs_h265
2318     cbs_jpeg
2319     cbs_mpeg2
2320     cbs_vp9
2321     dirac_parse
2322     dnn
2323     dvprofile
2324     exif
2325     faandct
2326     faanidct
2327     fdctdsp
2328     flacdsp
2329     fmtconvert
2330     frame_thread_encoder
2331     g722dsp
2332     golomb
2333     gplv3
2334     h263dsp
2335     h264chroma
2336     h264dsp
2337     h264parse
2338     h264pred
2339     h264qpel
2340     hevcparse
2341     hpeldsp
2342     huffman
2343     huffyuvdsp
2344     huffyuvencdsp
2345     idctdsp
2346     iirfilter
2347     mdct15
2348     intrax8
2349     iso_media
2350     ividsp
2351     jpegtables
2352     lgplv3
2353     libx262
2354     llauddsp
2355     llviddsp
2356     llvidencdsp
2357     lpc
2358     lzf
2359     me_cmp
2360     mpeg_er
2361     mpegaudio
2362     mpegaudiodsp
2363     mpegaudioheader
2364     mpegvideo
2365     mpegvideoenc
2366     mss34dsp
2367     pixblockdsp
2368     qpeldsp
2369     qsv
2370     qsvdec
2371     qsvenc
2372     qsvvpp
2373     rangecoder
2374     riffdec
2375     riffenc
2376     rtpdec
2377     rtpenc_chain
2378     rv34dsp
2379     scene_sad
2380     sinewin
2381     snappy
2382     srtp
2383     startcode
2384     texturedsp
2385     texturedspenc
2386     tpeldsp
2387     vaapi_1
2388     vaapi_encode
2389     vc1dsp
2390     videodsp
2391     vp3dsp
2392     vp56dsp
2393     vp8dsp
2394     wma_freqs
2395     wmv2dsp
2396 "
2397
2398 CMDLINE_SELECT="
2399     $ARCH_EXT_LIST
2400     $CONFIG_LIST
2401     $HAVE_LIST_CMDLINE
2402     $THREADS_LIST
2403     asm
2404     cross_compile
2405     debug
2406     extra_warnings
2407     logging
2408     lto
2409     optimizations
2410     rpath
2411     stripping
2412 "
2413
2414 PATHS_LIST="
2415     bindir
2416     datadir
2417     docdir
2418     incdir
2419     libdir
2420     mandir
2421     pkgconfigdir
2422     prefix
2423     shlibdir
2424     install_name_dir
2425 "
2426
2427 CMDLINE_SET="
2428     $PATHS_LIST
2429     ar
2430     arch
2431     as
2432     assert_level
2433     build_suffix
2434     cc
2435     objcc
2436     cpu
2437     cross_prefix
2438     custom_allocator
2439     cxx
2440     dep_cc
2441     doxygen
2442     env
2443     extra_version
2444     gas
2445     host_cc
2446     host_cflags
2447     host_extralibs
2448     host_ld
2449     host_ldflags
2450     host_os
2451     ignore_tests
2452     install
2453     ld
2454     ln_s
2455     logfile
2456     malloc_prefix
2457     nm
2458     optflags
2459     nvcc
2460     nvccflags
2461     pkg_config
2462     pkg_config_flags
2463     progs_suffix
2464     random_seed
2465     ranlib
2466     samples
2467     strip
2468     sws_max_filter_size
2469     sysinclude
2470     sysroot
2471     target_exec
2472     target_os
2473     target_path
2474     target_samples
2475     tempprefix
2476     toolchain
2477     valgrind
2478     windres
2479     x86asmexe
2480 "
2481
2482 CMDLINE_APPEND="
2483     extra_cflags
2484     extra_cxxflags
2485     extra_objcflags
2486     host_cppflags
2487 "
2488
2489 # code dependency declarations
2490
2491 # architecture extensions
2492
2493 armv5te_deps="arm"
2494 armv6_deps="arm"
2495 armv6t2_deps="arm"
2496 armv8_deps="aarch64"
2497 neon_deps_any="aarch64 arm"
2498 intrinsics_neon_deps="neon"
2499 vfp_deps_any="aarch64 arm"
2500 vfpv3_deps="vfp"
2501 setend_deps="arm"
2502
2503 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2504
2505 altivec_deps="ppc"
2506 dcbzl_deps="ppc"
2507 ldbrx_deps="ppc"
2508 ppc4xx_deps="ppc"
2509 vsx_deps="altivec"
2510 power8_deps="vsx"
2511
2512 loongson2_deps="mips"
2513 loongson3_deps="mips"
2514 mips32r2_deps="mips"
2515 mips32r5_deps="mips"
2516 mips32r6_deps="mips"
2517 mips64r2_deps="mips"
2518 mips64r6_deps="mips"
2519 mipsfpu_deps="mips"
2520 mipsdsp_deps="mips"
2521 mipsdspr2_deps="mips"
2522 mmi_deps="mips"
2523 msa_deps="mipsfpu"
2524
2525 cpunop_deps="i686"
2526 x86_64_select="i686"
2527 x86_64_suggest="fast_cmov"
2528
2529 amd3dnow_deps="mmx"
2530 amd3dnowext_deps="amd3dnow"
2531 i686_deps="x86"
2532 mmx_deps="x86"
2533 mmxext_deps="mmx"
2534 sse_deps="mmxext"
2535 sse2_deps="sse"
2536 sse3_deps="sse2"
2537 ssse3_deps="sse3"
2538 sse4_deps="ssse3"
2539 sse42_deps="sse4"
2540 aesni_deps="sse42"
2541 avx_deps="sse42"
2542 xop_deps="avx"
2543 fma3_deps="avx"
2544 fma4_deps="avx"
2545 avx2_deps="avx"
2546 avx512_deps="avx2"
2547
2548 mmx_external_deps="x86asm"
2549 mmx_inline_deps="inline_asm x86"
2550 mmx_suggest="mmx_external mmx_inline"
2551
2552 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2553     eval dep=\$${ext}_deps
2554     eval ${ext}_external_deps='"${dep}_external"'
2555     eval ${ext}_inline_deps='"${dep}_inline"'
2556     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2557 done
2558
2559 aligned_stack_if_any="aarch64 ppc x86"
2560 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2561 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2562 fast_unaligned_if_any="aarch64 ppc x86"
2563 simd_align_16_if_any="altivec neon sse"
2564 simd_align_32_if_any="avx"
2565 simd_align_64_if_any="avx512"
2566
2567 # system capabilities
2568 linux_perf_deps="linux_perf_event_h"
2569 symver_if_any="symver_asm_label symver_gnu_asm"
2570 valgrind_backtrace_conflict="optimizations"
2571 valgrind_backtrace_deps="valgrind_valgrind_h"
2572
2573 # threading support
2574 atomics_gcc_if="sync_val_compare_and_swap"
2575 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2576 atomics_win32_if="MemoryBarrier"
2577 atomics_native_if_any="$ATOMICS_LIST"
2578 w32threads_deps="atomics_native"
2579 threads_if_any="$THREADS_LIST"
2580
2581 # subsystems
2582 cbs_av1_select="cbs"
2583 cbs_h264_select="cbs golomb"
2584 cbs_h265_select="cbs golomb"
2585 cbs_jpeg_select="cbs"
2586 cbs_mpeg2_select="cbs"
2587 cbs_vp9_select="cbs"
2588 dct_select="rdft"
2589 dirac_parse_select="golomb"
2590 dnn_suggest="libtensorflow"
2591 error_resilience_select="me_cmp"
2592 faandct_deps="faan"
2593 faandct_select="fdctdsp"
2594 faanidct_deps="faan"
2595 faanidct_select="idctdsp"
2596 h264dsp_select="startcode"
2597 hevcparse_select="golomb"
2598 frame_thread_encoder_deps="encoders threads"
2599 intrax8_select="blockdsp idctdsp"
2600 mdct_select="fft"
2601 mdct15_select="fft"
2602 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2603 mpeg_er_select="error_resilience"
2604 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2605 mpegaudiodsp_select="dct"
2606 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2607 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2608 vc1dsp_select="h264chroma qpeldsp startcode"
2609 rdft_select="fft"
2610
2611 # decoders / encoders
2612 aac_decoder_select="adts_header mdct15 mdct sinewin"
2613 aac_fixed_decoder_select="adts_header mdct sinewin"
2614 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2615 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2616 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2617 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2618 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2619 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2620 adpcm_g722_decoder_select="g722dsp"
2621 adpcm_g722_encoder_select="g722dsp"
2622 aic_decoder_select="golomb idctdsp"
2623 alac_encoder_select="lpc"
2624 als_decoder_select="bswapdsp"
2625 amrnb_decoder_select="lsp"
2626 amrwb_decoder_select="lsp"
2627 amv_decoder_select="sp5x_decoder exif"
2628 amv_encoder_select="jpegtables mpegvideoenc"
2629 ape_decoder_select="bswapdsp llauddsp"
2630 apng_decoder_deps="zlib"
2631 apng_encoder_deps="zlib"
2632 apng_encoder_select="llvidencdsp"
2633 aptx_decoder_select="audio_frame_queue"
2634 aptx_encoder_select="audio_frame_queue"
2635 aptx_hd_decoder_select="audio_frame_queue"
2636 aptx_hd_encoder_select="audio_frame_queue"
2637 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2638 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2639 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2640 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2641 atrac1_decoder_select="mdct sinewin"
2642 atrac3_decoder_select="mdct"
2643 atrac3p_decoder_select="mdct sinewin"
2644 atrac9_decoder_select="mdct"
2645 avrn_decoder_select="exif jpegtables"
2646 bink_decoder_select="blockdsp hpeldsp"
2647 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2648 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2649 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2650 clearvideo_decoder_select="idctdsp"
2651 cllc_decoder_select="bswapdsp"
2652 comfortnoise_encoder_select="lpc"
2653 cook_decoder_select="audiodsp mdct sinewin"
2654 cscd_decoder_select="lzo"
2655 cscd_decoder_suggest="zlib"
2656 dca_decoder_select="mdct"
2657 dds_decoder_select="texturedsp"
2658 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2659 dnxhd_decoder_select="blockdsp idctdsp"
2660 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2661 dolby_e_decoder_select="mdct"
2662 dvvideo_decoder_select="dvprofile idctdsp"
2663 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2664 dxa_decoder_deps="zlib"
2665 dxv_decoder_select="lzf texturedsp"
2666 eac3_decoder_select="ac3_decoder"
2667 eac3_encoder_select="ac3_encoder"
2668 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2669 eatgq_decoder_select="aandcttables"
2670 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2671 exr_decoder_deps="zlib"
2672 ffv1_decoder_select="rangecoder"
2673 ffv1_encoder_select="rangecoder"
2674 ffvhuff_decoder_select="huffyuv_decoder"
2675 ffvhuff_encoder_select="huffyuv_encoder"
2676 fic_decoder_select="golomb"
2677 flac_decoder_select="flacdsp"
2678 flac_encoder_select="bswapdsp flacdsp lpc"
2679 flashsv2_decoder_deps="zlib"
2680 flashsv2_encoder_deps="zlib"
2681 flashsv_decoder_deps="zlib"
2682 flashsv_encoder_deps="zlib"
2683 flv_decoder_select="h263_decoder"
2684 flv_encoder_select="h263_encoder"
2685 fourxm_decoder_select="blockdsp bswapdsp"
2686 fraps_decoder_select="bswapdsp huffman"
2687 g2m_decoder_deps="zlib"
2688 g2m_decoder_select="blockdsp idctdsp jpegtables"
2689 g729_decoder_select="audiodsp"
2690 h261_decoder_select="mpegvideo"
2691 h261_encoder_select="mpegvideoenc"
2692 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2693 h263_encoder_select="h263dsp mpegvideoenc"
2694 h263i_decoder_select="h263_decoder"
2695 h263p_decoder_select="h263_decoder"
2696 h263p_encoder_select="h263_encoder"
2697 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2698 h264_decoder_suggest="error_resilience"
2699 hap_decoder_select="snappy texturedsp"
2700 hap_encoder_deps="libsnappy"
2701 hap_encoder_select="texturedspenc"
2702 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2703 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2704 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2705 hymt_decoder_select="huffyuv_decoder"
2706 iac_decoder_select="imc_decoder"
2707 imc_decoder_select="bswapdsp fft mdct sinewin"
2708 indeo3_decoder_select="hpeldsp"
2709 indeo4_decoder_select="ividsp"
2710 indeo5_decoder_select="ividsp"
2711 interplay_video_decoder_select="hpeldsp"
2712 jpegls_decoder_select="mjpeg_decoder"
2713 jv_decoder_select="blockdsp"
2714 lagarith_decoder_select="llviddsp"
2715 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2716 lscr_decoder_deps="zlib"
2717 magicyuv_decoder_select="llviddsp"
2718 magicyuv_encoder_select="llvidencdsp"
2719 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2720 metasound_decoder_select="lsp mdct sinewin"
2721 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2722 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2723 mjpeg_encoder_select="jpegtables mpegvideoenc"
2724 mjpegb_decoder_select="mjpeg_decoder"
2725 mlp_decoder_select="mlp_parser"
2726 mlp_encoder_select="lpc audio_frame_queue"
2727 motionpixels_decoder_select="bswapdsp"
2728 mp1_decoder_select="mpegaudio"
2729 mp1float_decoder_select="mpegaudio"
2730 mp2_decoder_select="mpegaudio"
2731 mp2float_decoder_select="mpegaudio"
2732 mp3_decoder_select="mpegaudio"
2733 mp3adu_decoder_select="mpegaudio"
2734 mp3adufloat_decoder_select="mpegaudio"
2735 mp3float_decoder_select="mpegaudio"
2736 mp3on4_decoder_select="mpegaudio"
2737 mp3on4float_decoder_select="mpegaudio"
2738 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2739 mpc8_decoder_select="mpegaudiodsp"
2740 mpegvideo_decoder_select="mpegvideo"
2741 mpeg1video_decoder_select="mpegvideo"
2742 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2743 mpeg2video_decoder_select="mpegvideo"
2744 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2745 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2746 mpeg4_encoder_select="h263_encoder"
2747 msa1_decoder_select="mss34dsp"
2748 mscc_decoder_deps="zlib"
2749 msmpeg4v1_decoder_select="h263_decoder"
2750 msmpeg4v2_decoder_select="h263_decoder"
2751 msmpeg4v2_encoder_select="h263_encoder"
2752 msmpeg4v3_decoder_select="h263_decoder"
2753 msmpeg4v3_encoder_select="h263_encoder"
2754 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2755 mts2_decoder_select="mss34dsp"
2756 mwsc_decoder_deps="zlib"
2757 mxpeg_decoder_select="mjpeg_decoder"
2758 nellymoser_decoder_select="mdct sinewin"
2759 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2760 nuv_decoder_select="idctdsp lzo"
2761 on2avc_decoder_select="mdct"
2762 opus_decoder_deps="swresample"
2763 opus_decoder_select="mdct15"
2764 opus_encoder_select="audio_frame_queue mdct15"
2765 png_decoder_deps="zlib"
2766 png_encoder_deps="zlib"
2767 png_encoder_select="llvidencdsp"
2768 prores_decoder_select="blockdsp idctdsp"
2769 prores_encoder_select="fdctdsp"
2770 qcelp_decoder_select="lsp"
2771 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2772 ra_144_decoder_select="audiodsp"
2773 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2774 ralf_decoder_select="golomb"
2775 rasc_decoder_deps="zlib"
2776 rawvideo_decoder_select="bswapdsp"
2777 rscc_decoder_deps="zlib"
2778 rtjpeg_decoder_select="me_cmp"
2779 rv10_decoder_select="h263_decoder"
2780 rv10_encoder_select="h263_encoder"
2781 rv20_decoder_select="h263_decoder"
2782 rv20_encoder_select="h263_encoder"
2783 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2784 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2785 screenpresso_decoder_deps="zlib"
2786 shorten_decoder_select="bswapdsp"
2787 sipr_decoder_select="lsp"
2788 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2789 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2790 sonic_decoder_select="golomb rangecoder"
2791 sonic_encoder_select="golomb rangecoder"
2792 sonic_ls_encoder_select="golomb rangecoder"
2793 sp5x_decoder_select="mjpeg_decoder"
2794 speedhq_decoder_select="mpegvideo"
2795 srgc_decoder_deps="zlib"
2796 svq1_decoder_select="hpeldsp"
2797 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2798 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2799 svq3_decoder_suggest="zlib"
2800 tak_decoder_select="audiodsp"
2801 tdsc_decoder_deps="zlib"
2802 tdsc_decoder_select="mjpeg_decoder"
2803 theora_decoder_select="vp3_decoder"
2804 thp_decoder_select="mjpeg_decoder"
2805 tiff_decoder_suggest="zlib lzma"
2806 tiff_encoder_suggest="zlib"
2807 truehd_decoder_select="mlp_parser"
2808 truehd_encoder_select="lpc audio_frame_queue"
2809 truemotion2_decoder_select="bswapdsp"
2810 truespeech_decoder_select="bswapdsp"
2811 tscc_decoder_deps="zlib"
2812 twinvq_decoder_select="mdct lsp sinewin"
2813 txd_decoder_select="texturedsp"
2814 utvideo_decoder_select="bswapdsp llviddsp"
2815 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2816 vble_decoder_select="llviddsp"
2817 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2818 vc1image_decoder_select="vc1_decoder"
2819 vorbis_decoder_select="mdct"
2820 vorbis_encoder_select="audio_frame_queue mdct"
2821 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2822 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2823 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2824 vp6a_decoder_select="vp6_decoder"
2825 vp6f_decoder_select="vp6_decoder"
2826 vp7_decoder_select="h264pred videodsp vp8dsp"
2827 vp8_decoder_select="h264pred videodsp vp8dsp"
2828 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2829 wcmv_decoder_deps="zlib"
2830 webp_decoder_select="vp8_decoder exif"
2831 wmalossless_decoder_select="llauddsp"
2832 wmapro_decoder_select="mdct sinewin wma_freqs"
2833 wmav1_decoder_select="mdct sinewin wma_freqs"
2834 wmav1_encoder_select="mdct sinewin wma_freqs"
2835 wmav2_decoder_select="mdct sinewin wma_freqs"
2836 wmav2_encoder_select="mdct sinewin wma_freqs"
2837 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2838 wmv1_decoder_select="h263_decoder"
2839 wmv1_encoder_select="h263_encoder"
2840 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2841 wmv2_encoder_select="h263_encoder wmv2dsp"
2842 wmv3_decoder_select="vc1_decoder"
2843 wmv3image_decoder_select="wmv3_decoder"
2844 xma1_decoder_select="wmapro_decoder"
2845 xma2_decoder_select="wmapro_decoder"
2846 zerocodec_decoder_deps="zlib"
2847 zlib_decoder_deps="zlib"
2848 zlib_encoder_deps="zlib"
2849 zmbv_decoder_deps="zlib"
2850 zmbv_encoder_deps="zlib"
2851
2852 # hardware accelerators
2853 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2854 cuda_deps="ffnvcodec"
2855 cuvid_deps="ffnvcodec"
2856 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2857 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2858 ffnvcodec_deps_any="libdl LoadLibrary"
2859 nvdec_deps="ffnvcodec"
2860 vaapi_x11_deps="xlib"
2861 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2862 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2863 xvmc_deps="X11_extensions_XvMClib_h"
2864
2865 h263_vaapi_hwaccel_deps="vaapi"
2866 h263_vaapi_hwaccel_select="h263_decoder"
2867 h263_videotoolbox_hwaccel_deps="videotoolbox"
2868 h263_videotoolbox_hwaccel_select="h263_decoder"
2869 h264_d3d11va_hwaccel_deps="d3d11va"
2870 h264_d3d11va_hwaccel_select="h264_decoder"
2871 h264_d3d11va2_hwaccel_deps="d3d11va"
2872 h264_d3d11va2_hwaccel_select="h264_decoder"
2873 h264_dxva2_hwaccel_deps="dxva2"
2874 h264_dxva2_hwaccel_select="h264_decoder"
2875 h264_nvdec_hwaccel_deps="nvdec"
2876 h264_nvdec_hwaccel_select="h264_decoder"
2877 h264_vaapi_hwaccel_deps="vaapi"
2878 h264_vaapi_hwaccel_select="h264_decoder"
2879 h264_vdpau_hwaccel_deps="vdpau"
2880 h264_vdpau_hwaccel_select="h264_decoder"
2881 h264_videotoolbox_hwaccel_deps="videotoolbox"
2882 h264_videotoolbox_hwaccel_select="h264_decoder"
2883 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2884 hevc_d3d11va_hwaccel_select="hevc_decoder"
2885 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2886 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2887 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2888 hevc_dxva2_hwaccel_select="hevc_decoder"
2889 hevc_nvdec_hwaccel_deps="nvdec"
2890 hevc_nvdec_hwaccel_select="hevc_decoder"
2891 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2892 hevc_vaapi_hwaccel_select="hevc_decoder"
2893 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2894 hevc_vdpau_hwaccel_select="hevc_decoder"
2895 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2896 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2897 mjpeg_nvdec_hwaccel_deps="nvdec"
2898 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2899 mjpeg_vaapi_hwaccel_deps="vaapi"
2900 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2901 mpeg_xvmc_hwaccel_deps="xvmc"
2902 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2903 mpeg1_nvdec_hwaccel_deps="nvdec"
2904 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2905 mpeg1_vdpau_hwaccel_deps="vdpau"
2906 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2907 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2908 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2909 mpeg1_xvmc_hwaccel_deps="xvmc"
2910 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2911 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2912 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2913 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2914 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2915 mpeg2_dxva2_hwaccel_deps="dxva2"
2916 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2917 mpeg2_nvdec_hwaccel_deps="nvdec"
2918 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2919 mpeg2_vaapi_hwaccel_deps="vaapi"
2920 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2921 mpeg2_vdpau_hwaccel_deps="vdpau"
2922 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2923 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2924 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2925 mpeg2_xvmc_hwaccel_deps="xvmc"
2926 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2927 mpeg4_nvdec_hwaccel_deps="nvdec"
2928 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2929 mpeg4_vaapi_hwaccel_deps="vaapi"
2930 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2931 mpeg4_vdpau_hwaccel_deps="vdpau"
2932 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2933 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2934 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2935 vc1_d3d11va_hwaccel_deps="d3d11va"
2936 vc1_d3d11va_hwaccel_select="vc1_decoder"
2937 vc1_d3d11va2_hwaccel_deps="d3d11va"
2938 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2939 vc1_dxva2_hwaccel_deps="dxva2"
2940 vc1_dxva2_hwaccel_select="vc1_decoder"
2941 vc1_nvdec_hwaccel_deps="nvdec"
2942 vc1_nvdec_hwaccel_select="vc1_decoder"
2943 vc1_vaapi_hwaccel_deps="vaapi"
2944 vc1_vaapi_hwaccel_select="vc1_decoder"
2945 vc1_vdpau_hwaccel_deps="vdpau"
2946 vc1_vdpau_hwaccel_select="vc1_decoder"
2947 vp8_nvdec_hwaccel_deps="nvdec"
2948 vp8_nvdec_hwaccel_select="vp8_decoder"
2949 vp8_vaapi_hwaccel_deps="vaapi"
2950 vp8_vaapi_hwaccel_select="vp8_decoder"
2951 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2952 vp9_d3d11va_hwaccel_select="vp9_decoder"
2953 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2954 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2955 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2956 vp9_dxva2_hwaccel_select="vp9_decoder"
2957 vp9_nvdec_hwaccel_deps="nvdec"
2958 vp9_nvdec_hwaccel_select="vp9_decoder"
2959 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2960 vp9_vaapi_hwaccel_select="vp9_decoder"
2961 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2962 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2963 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2964 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2965 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2966 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2967
2968 # hardware-accelerated codecs
2969 omx_deps="libdl pthreads"
2970 omx_rpi_select="omx"
2971 qsv_deps="libmfx"
2972 qsvdec_select="qsv"
2973 qsvenc_select="qsv"
2974 qsvvpp_select="qsv"
2975 vaapi_encode_deps="vaapi"
2976 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2977
2978 hwupload_cuda_filter_deps="ffnvcodec"
2979 scale_npp_filter_deps="ffnvcodec libnpp"
2980 scale_cuda_filter_deps="ffnvcodec cuda_nvcc"
2981 thumbnail_cuda_filter_deps="ffnvcodec cuda_nvcc"
2982 transpose_npp_filter_deps="ffnvcodec libnpp"
2983
2984 amf_deps_any="libdl LoadLibrary"
2985 nvenc_deps="ffnvcodec"
2986 nvenc_deps_any="libdl LoadLibrary"
2987 nvenc_encoder_deps="nvenc"
2988
2989 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2990 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2991 h264_amf_encoder_deps="amf"
2992 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2993 h264_cuvid_decoder_deps="cuvid"
2994 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2995 h264_mediacodec_decoder_deps="mediacodec"
2996 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2997 h264_mmal_decoder_deps="mmal"
2998 h264_nvenc_encoder_deps="nvenc"
2999 h264_omx_encoder_deps="omx"
3000 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
3001 h264_qsv_encoder_select="qsvenc"
3002 h264_rkmpp_decoder_deps="rkmpp"
3003 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3004 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3005 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3006 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3007 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3008 hevc_amf_encoder_deps="amf"
3009 hevc_cuvid_decoder_deps="cuvid"
3010 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3011 hevc_mediacodec_decoder_deps="mediacodec"
3012 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3013 hevc_nvenc_encoder_deps="nvenc"
3014 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
3015 hevc_qsv_encoder_select="hevcparse qsvenc"
3016 hevc_rkmpp_decoder_deps="rkmpp"
3017 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3018 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3019 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3020 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3021 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3022 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3023 mjpeg_cuvid_decoder_deps="cuvid"
3024 mjpeg_qsv_encoder_deps="libmfx"
3025 mjpeg_qsv_encoder_select="qsvenc"
3026 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3027 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3028 mpeg1_cuvid_decoder_deps="cuvid"
3029 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3030 mpeg2_crystalhd_decoder_select="crystalhd"
3031 mpeg2_cuvid_decoder_deps="cuvid"
3032 mpeg2_mmal_decoder_deps="mmal"
3033 mpeg2_mediacodec_decoder_deps="mediacodec"
3034 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
3035 mpeg2_qsv_encoder_select="qsvenc"
3036 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3037 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3038 mpeg4_crystalhd_decoder_select="crystalhd"
3039 mpeg4_cuvid_decoder_deps="cuvid"
3040 mpeg4_mediacodec_decoder_deps="mediacodec"
3041 mpeg4_mmal_decoder_deps="mmal"
3042 mpeg4_omx_encoder_deps="omx"
3043 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3044 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3045 msmpeg4_crystalhd_decoder_select="crystalhd"
3046 nvenc_h264_encoder_select="h264_nvenc_encoder"
3047 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3048 vc1_crystalhd_decoder_select="crystalhd"
3049 vc1_cuvid_decoder_deps="cuvid"
3050 vc1_mmal_decoder_deps="mmal"
3051 vc1_qsv_decoder_select="qsvdec vc1_parser"
3052 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3053 vp8_cuvid_decoder_deps="cuvid"
3054 vp8_mediacodec_decoder_deps="mediacodec"
3055 vp8_qsv_decoder_select="qsvdec vp8_parser"
3056 vp8_rkmpp_decoder_deps="rkmpp"
3057 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3058 vp8_vaapi_encoder_select="vaapi_encode"
3059 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3060 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3061 vp9_cuvid_decoder_deps="cuvid"
3062 vp9_mediacodec_decoder_deps="mediacodec"
3063 vp9_rkmpp_decoder_deps="rkmpp"
3064 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3065 vp9_vaapi_encoder_select="vaapi_encode"
3066 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3067 wmv3_crystalhd_decoder_select="crystalhd"
3068
3069 # parsers
3070 aac_parser_select="adts_header"
3071 av1_parser_select="cbs_av1"
3072 h264_parser_select="golomb h264dsp h264parse"
3073 hevc_parser_select="hevcparse"
3074 mpegaudio_parser_select="mpegaudioheader"
3075 mpegvideo_parser_select="mpegvideo"
3076 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3077 vc1_parser_select="vc1dsp"
3078
3079 # bitstream_filters
3080 aac_adtstoasc_bsf_select="adts_header"
3081 av1_frame_split_bsf_select="cbs_av1"
3082 av1_metadata_bsf_select="cbs_av1"
3083 eac3_core_bsf_select="ac3_parser"
3084 filter_units_bsf_select="cbs"
3085 h264_metadata_bsf_deps="const_nan"
3086 h264_metadata_bsf_select="cbs_h264"
3087 h264_redundant_pps_bsf_select="cbs_h264"
3088 hevc_metadata_bsf_select="cbs_h265"
3089 mjpeg2jpeg_bsf_select="jpegtables"
3090 mpeg2_metadata_bsf_select="cbs_mpeg2"
3091 trace_headers_bsf_select="cbs"
3092 truehd_core_bsf_select="mlp_parser"
3093 vp9_metadata_bsf_select="cbs_vp9"
3094
3095 # external libraries
3096 aac_at_decoder_deps="audiotoolbox"
3097 aac_at_decoder_select="aac_adtstoasc_bsf"
3098 ac3_at_decoder_deps="audiotoolbox"
3099 ac3_at_decoder_select="ac3_parser"
3100 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3101 alac_at_decoder_deps="audiotoolbox"
3102 amr_nb_at_decoder_deps="audiotoolbox"
3103 avisynth_deps_any="libdl LoadLibrary"
3104 avisynth_demuxer_deps="avisynth"
3105 avisynth_demuxer_select="riffdec"
3106 eac3_at_decoder_deps="audiotoolbox"
3107 eac3_at_decoder_select="ac3_parser"
3108 gsm_ms_at_decoder_deps="audiotoolbox"
3109 ilbc_at_decoder_deps="audiotoolbox"
3110 mp1_at_decoder_deps="audiotoolbox"
3111 mp2_at_decoder_deps="audiotoolbox"
3112 mp3_at_decoder_deps="audiotoolbox"
3113 mp1_at_decoder_select="mpegaudioheader"
3114 mp2_at_decoder_select="mpegaudioheader"
3115 mp3_at_decoder_select="mpegaudioheader"
3116 pcm_alaw_at_decoder_deps="audiotoolbox"
3117 pcm_mulaw_at_decoder_deps="audiotoolbox"
3118 qdmc_at_decoder_deps="audiotoolbox"
3119 qdm2_at_decoder_deps="audiotoolbox"
3120 aac_at_encoder_deps="audiotoolbox"
3121 aac_at_encoder_select="audio_frame_queue"
3122 alac_at_encoder_deps="audiotoolbox"
3123 alac_at_encoder_select="audio_frame_queue"
3124 ilbc_at_encoder_deps="audiotoolbox"
3125 ilbc_at_encoder_select="audio_frame_queue"
3126 pcm_alaw_at_encoder_deps="audiotoolbox"
3127 pcm_alaw_at_encoder_select="audio_frame_queue"
3128 pcm_mulaw_at_encoder_deps="audiotoolbox"
3129 pcm_mulaw_at_encoder_select="audio_frame_queue"
3130 chromaprint_muxer_deps="chromaprint"
3131 h264_videotoolbox_encoder_deps="pthreads"
3132 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3133 hevc_videotoolbox_encoder_deps="pthreads"
3134 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3135 libaom_av1_decoder_deps="libaom"
3136 libaom_av1_encoder_deps="libaom"
3137 libaom_av1_encoder_select="extract_extradata_bsf"
3138 libaribb24_decoder_deps="libaribb24"
3139 libcelt_decoder_deps="libcelt"
3140 libcodec2_decoder_deps="libcodec2"
3141 libcodec2_encoder_deps="libcodec2"
3142 libdav1d_decoder_deps="libdav1d"
3143 libdavs2_decoder_deps="libdavs2"
3144 libfdk_aac_decoder_deps="libfdk_aac"
3145 libfdk_aac_encoder_deps="libfdk_aac"
3146 libfdk_aac_encoder_select="audio_frame_queue"
3147 libgme_demuxer_deps="libgme"
3148 libgsm_decoder_deps="libgsm"
3149 libgsm_encoder_deps="libgsm"
3150 libgsm_ms_decoder_deps="libgsm"
3151 libgsm_ms_encoder_deps="libgsm"
3152 libilbc_decoder_deps="libilbc"
3153 libilbc_encoder_deps="libilbc"
3154 libkvazaar_encoder_deps="libkvazaar"
3155 libmodplug_demuxer_deps="libmodplug"
3156 libmp3lame_encoder_deps="libmp3lame"
3157 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3158 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3159 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3160 libopencore_amrnb_encoder_select="audio_frame_queue"
3161 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3162 libopenh264_decoder_deps="libopenh264"
3163 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3164 libopenh264_encoder_deps="libopenh264"
3165 libopenjpeg_decoder_deps="libopenjpeg"
3166 libopenjpeg_encoder_deps="libopenjpeg"
3167 libopenmpt_demuxer_deps="libopenmpt"
3168 libopus_decoder_deps="libopus"
3169 libopus_encoder_deps="libopus"
3170 libopus_encoder_select="audio_frame_queue"
3171 librsvg_decoder_deps="librsvg"
3172 libshine_encoder_deps="libshine"
3173 libshine_encoder_select="audio_frame_queue"
3174 libspeex_decoder_deps="libspeex"
3175 libspeex_encoder_deps="libspeex"
3176 libspeex_encoder_select="audio_frame_queue"
3177 libtheora_encoder_deps="libtheora"
3178 libtwolame_encoder_deps="libtwolame"
3179 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3180 libvorbis_decoder_deps="libvorbis"
3181 libvorbis_encoder_deps="libvorbis libvorbisenc"
3182 libvorbis_encoder_select="audio_frame_queue"
3183 libvpx_vp8_decoder_deps="libvpx"
3184 libvpx_vp8_encoder_deps="libvpx"
3185 libvpx_vp9_decoder_deps="libvpx"
3186 libvpx_vp9_encoder_deps="libvpx"
3187 libwavpack_encoder_deps="libwavpack"
3188 libwavpack_encoder_select="audio_frame_queue"
3189 libwebp_encoder_deps="libwebp"
3190 libwebp_anim_encoder_deps="libwebp"
3191 libx262_encoder_deps="libx262"
3192 libx264_encoder_deps="libx264"
3193 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3194 libx264rgb_encoder_select="libx264_encoder"
3195 libx265_encoder_deps="libx265"
3196 libxavs_encoder_deps="libxavs"
3197 libxavs2_encoder_deps="libxavs2"
3198 libxvid_encoder_deps="libxvid"
3199 libzvbi_teletext_decoder_deps="libzvbi"
3200 vapoursynth_demuxer_deps="vapoursynth"
3201 videotoolbox_suggest="coreservices"
3202 videotoolbox_deps="corefoundation coremedia corevideo"
3203 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3204
3205 # demuxers / muxers
3206 ac3_demuxer_select="ac3_parser"
3207 aiff_muxer_select="iso_media"
3208 asf_demuxer_select="riffdec"
3209 asf_o_demuxer_select="riffdec"
3210 asf_muxer_select="riffenc"
3211 asf_stream_muxer_select="asf_muxer"
3212 avi_demuxer_select="iso_media riffdec exif"
3213 avi_muxer_select="riffenc"
3214 caf_demuxer_select="iso_media riffdec"
3215 caf_muxer_select="iso_media"
3216 dash_muxer_select="mp4_muxer"
3217 dash_demuxer_deps="libxml2"
3218 dirac_demuxer_select="dirac_parser"
3219 dts_demuxer_select="dca_parser"
3220 dtshd_demuxer_select="dca_parser"
3221 dv_demuxer_select="dvprofile"
3222 dv_muxer_select="dvprofile"
3223 dxa_demuxer_select="riffdec"
3224 eac3_demuxer_select="ac3_parser"
3225 f4v_muxer_select="mov_muxer"
3226 fifo_muxer_deps="threads"
3227 flac_demuxer_select="flac_parser"
3228 hds_muxer_select="flv_muxer"
3229 hls_muxer_select="mpegts_muxer"
3230 hls_muxer_suggest="gcrypt openssl"
3231 image2_alias_pix_demuxer_select="image2_demuxer"
3232 image2_brender_pix_demuxer_select="image2_demuxer"
3233 ipod_muxer_select="mov_muxer"
3234 ismv_muxer_select="mov_muxer"
3235 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3236 matroska_audio_muxer_select="matroska_muxer"
3237 matroska_demuxer_select="iso_media riffdec"
3238 matroska_demuxer_suggest="bzlib lzo zlib"
3239 matroska_muxer_select="iso_media riffenc"
3240 mmf_muxer_select="riffenc"
3241 mov_demuxer_select="iso_media riffdec"
3242 mov_demuxer_suggest="zlib"
3243 mov_muxer_select="iso_media riffenc rtpenc_chain"
3244 mp3_demuxer_select="mpegaudio_parser"
3245 mp3_muxer_select="mpegaudioheader"
3246 mp4_muxer_select="mov_muxer"
3247 mpegts_demuxer_select="iso_media"
3248 mpegts_muxer_select="adts_muxer latm_muxer"
3249 mpegtsraw_demuxer_select="mpegts_demuxer"
3250 mxf_d10_muxer_select="mxf_muxer"
3251 mxf_opatom_muxer_select="mxf_muxer"
3252 nut_muxer_select="riffenc"
3253 nuv_demuxer_select="riffdec"
3254 oga_muxer_select="ogg_muxer"
3255 ogg_demuxer_select="dirac_parse"
3256 ogv_muxer_select="ogg_muxer"
3257 opus_muxer_select="ogg_muxer"
3258 psp_muxer_select="mov_muxer"
3259 rtp_demuxer_select="sdp_demuxer"
3260 rtp_muxer_select="golomb"
3261 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3262 rtsp_demuxer_select="http_protocol rtpdec"
3263 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3264 sap_demuxer_select="sdp_demuxer"
3265 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3266 sdp_demuxer_select="rtpdec"
3267 smoothstreaming_muxer_select="ismv_muxer"
3268 spdif_demuxer_select="adts_header"
3269 spdif_muxer_select="adts_header"
3270 spx_muxer_select="ogg_muxer"
3271 swf_demuxer_suggest="zlib"
3272 tak_demuxer_select="tak_parser"
3273 tg2_muxer_select="mov_muxer"
3274 tgp_muxer_select="mov_muxer"
3275 vobsub_demuxer_select="mpegps_demuxer"
3276 w64_demuxer_select="wav_demuxer"
3277 w64_muxer_select="wav_muxer"
3278 wav_demuxer_select="riffdec"
3279 wav_muxer_select="riffenc"
3280 webm_muxer_select="iso_media riffenc"
3281 webm_dash_manifest_demuxer_select="matroska_demuxer"
3282 wtv_demuxer_select="mpegts_demuxer riffdec"
3283 wtv_muxer_select="mpegts_muxer riffenc"
3284 xmv_demuxer_select="riffdec"
3285 xwma_demuxer_select="riffdec"
3286
3287 # indevs / outdevs
3288 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3289 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3290 alsa_indev_deps="alsa"
3291 alsa_outdev_deps="alsa"
3292 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3293 avfoundation_indev_suggest="coregraphics applicationservices"
3294 avfoundation_indev_extralibs="-framework Foundation"
3295 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3296 caca_outdev_deps="libcaca"
3297 decklink_deps_any="libdl LoadLibrary"
3298 decklink_indev_deps="decklink threads"
3299 decklink_indev_extralibs="-lstdc++"
3300 decklink_outdev_deps="decklink threads"
3301 decklink_outdev_suggest="libklvanc"
3302 decklink_outdev_extralibs="-lstdc++"
3303 dshow_indev_deps="IBaseFilter"
3304 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3305 fbdev_indev_deps="linux_fb_h"
3306 fbdev_outdev_deps="linux_fb_h"
3307 gdigrab_indev_deps="CreateDIBSection"
3308 gdigrab_indev_extralibs="-lgdi32"
3309 gdigrab_indev_select="bmp_decoder"
3310 iec61883_indev_deps="libiec61883"
3311 jack_indev_deps="libjack"
3312 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3313 kmsgrab_indev_deps="libdrm"
3314 lavfi_indev_deps="avfilter"
3315 libcdio_indev_deps="libcdio"
3316 libdc1394_indev_deps="libdc1394"
3317 openal_indev_deps="openal"
3318 opengl_outdev_deps="opengl"
3319 opengl_outdev_suggest="sdl2"
3320 oss_indev_deps_any="sys_soundcard_h"
3321 oss_outdev_deps_any="sys_soundcard_h"
3322 pulse_indev_deps="libpulse"
3323 pulse_outdev_deps="libpulse"
3324 sdl2_outdev_deps="sdl2"
3325 sndio_indev_deps="sndio"
3326 sndio_outdev_deps="sndio"
3327 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3328 v4l2_indev_suggest="libv4l2"
3329 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3330 v4l2_outdev_suggest="libv4l2"
3331 vfwcap_indev_deps="vfw32 vfwcap_defines"
3332 xcbgrab_indev_deps="libxcb"
3333 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3334 xv_outdev_deps="xlib"
3335
3336 # protocols
3337 async_protocol_deps="threads"
3338 bluray_protocol_deps="libbluray"
3339 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3340 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3341 ffrtmpcrypt_protocol_select="tcp_protocol"
3342 ffrtmphttp_protocol_conflict="librtmp_protocol"
3343 ffrtmphttp_protocol_select="http_protocol"
3344 ftp_protocol_select="tcp_protocol"
3345 gopher_protocol_select="network"
3346 http_protocol_select="tcp_protocol"
3347 http_protocol_suggest="zlib"
3348 httpproxy_protocol_select="tcp_protocol"
3349 httpproxy_protocol_suggest="zlib"
3350 https_protocol_select="tls_protocol"
3351 https_protocol_suggest="zlib"
3352 icecast_protocol_select="http_protocol"
3353 mmsh_protocol_select="http_protocol"
3354 mmst_protocol_select="network"
3355 rtmp_protocol_conflict="librtmp_protocol"
3356 rtmp_protocol_select="tcp_protocol"
3357 rtmp_protocol_suggest="zlib"
3358 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3359 rtmpe_protocol_suggest="zlib"
3360 rtmps_protocol_conflict="librtmp_protocol"
3361 rtmps_protocol_select="tls_protocol"
3362 rtmps_protocol_suggest="zlib"
3363 rtmpt_protocol_select="ffrtmphttp_protocol"
3364 rtmpt_protocol_suggest="zlib"
3365 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3366 rtmpte_protocol_suggest="zlib"
3367 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3368 rtmpts_protocol_suggest="zlib"
3369 rtp_protocol_select="udp_protocol"
3370 schannel_conflict="openssl gnutls libtls mbedtls"
3371 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3372 sctp_protocol_select="network"
3373 securetransport_conflict="openssl gnutls libtls mbedtls"
3374 srtp_protocol_select="rtp_protocol srtp"
3375 tcp_protocol_select="network"
3376 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3377 tls_protocol_select="tcp_protocol"
3378 udp_protocol_select="network"
3379 udplite_protocol_select="network"
3380 unix_protocol_deps="sys_un_h"
3381 unix_protocol_select="network"
3382
3383 # external library protocols
3384 librtmp_protocol_deps="librtmp"
3385 librtmpe_protocol_deps="librtmp"
3386 librtmps_protocol_deps="librtmp"
3387 librtmpt_protocol_deps="librtmp"
3388 librtmpte_protocol_deps="librtmp"
3389 libsmbclient_protocol_deps="libsmbclient gplv3"
3390 libsrt_protocol_deps="libsrt"
3391 libsrt_protocol_select="network"
3392 libssh_protocol_deps="libssh"
3393 libtls_conflict="openssl gnutls mbedtls"
3394
3395 # filters
3396 afftdn_filter_deps="avcodec"
3397 afftdn_filter_select="fft"
3398 afftfilt_filter_deps="avcodec"
3399 afftfilt_filter_select="fft"
3400 afir_filter_deps="avcodec"
3401 afir_filter_select="fft"
3402 amovie_filter_deps="avcodec avformat"
3403 aresample_filter_deps="swresample"
3404 ass_filter_deps="libass"
3405 atempo_filter_deps="avcodec"
3406 atempo_filter_select="rdft"
3407 avgblur_opencl_filter_deps="opencl"
3408 azmq_filter_deps="libzmq"
3409 blackframe_filter_deps="gpl"
3410 bm3d_filter_deps="avcodec"
3411 bm3d_filter_select="dct"
3412 boxblur_filter_deps="gpl"
3413 boxblur_opencl_filter_deps="opencl gpl"
3414 bs2b_filter_deps="libbs2b"
3415 colormatrix_filter_deps="gpl"
3416 convolution_opencl_filter_deps="opencl"
3417 convolve_filter_deps="avcodec"
3418 convolve_filter_select="fft"
3419 coreimage_filter_deps="coreimage appkit"
3420 coreimage_filter_extralibs="-framework OpenGL"
3421 coreimagesrc_filter_deps="coreimage appkit"
3422 coreimagesrc_filter_extralibs="-framework OpenGL"
3423 cover_rect_filter_deps="avcodec avformat gpl"
3424 cropdetect_filter_deps="gpl"
3425 deconvolve_filter_deps="avcodec"
3426 deconvolve_filter_select="fft"
3427 deinterlace_qsv_filter_deps="libmfx"
3428 deinterlace_vaapi_filter_deps="vaapi"
3429 delogo_filter_deps="gpl"
3430 denoise_vaapi_filter_deps="vaapi"
3431 deshake_filter_select="pixelutils"
3432 dilation_opencl_filter_deps="opencl"
3433 drawtext_filter_deps="libfreetype"
3434 drawtext_filter_suggest="libfontconfig libfribidi"
3435 elbg_filter_deps="avcodec"
3436 eq_filter_deps="gpl"
3437 erosion_opencl_filter_deps="opencl"
3438 fftfilt_filter_deps="avcodec"
3439 fftfilt_filter_select="rdft"
3440 fftdnoiz_filter_deps="avcodec"
3441 fftdnoiz_filter_select="fft"
3442 find_rect_filter_deps="avcodec avformat gpl"
3443 firequalizer_filter_deps="avcodec"
3444 firequalizer_filter_select="rdft"
3445 flite_filter_deps="libflite"
3446 framerate_filter_select="scene_sad"
3447 freezedetect_filter_select="scene_sad"
3448 frei0r_filter_deps="frei0r libdl"
3449 frei0r_src_filter_deps="frei0r libdl"
3450 fspp_filter_deps="gpl"
3451 geq_filter_deps="gpl"
3452 histeq_filter_deps="gpl"
3453 hqdn3d_filter_deps="gpl"
3454 interlace_filter_deps="gpl"
3455 kerndeint_filter_deps="gpl"
3456 ladspa_filter_deps="ladspa libdl"
3457 lensfun_filter_deps="liblensfun version3"
3458 lv2_filter_deps="lv2"
3459 mcdeint_filter_deps="avcodec gpl"
3460 movie_filter_deps="avcodec avformat"
3461 mpdecimate_filter_deps="gpl"
3462 mpdecimate_filter_select="pixelutils"
3463 minterpolate_filter_select="scene_sad"
3464 mptestsrc_filter_deps="gpl"
3465 negate_filter_deps="lut_filter"
3466 nnedi_filter_deps="gpl"
3467 ocr_filter_deps="libtesseract"
3468 ocv_filter_deps="libopencv"
3469 openclsrc_filter_deps="opencl"
3470 overlay_opencl_filter_deps="opencl"
3471 overlay_qsv_filter_deps="libmfx"
3472 overlay_qsv_filter_select="qsvvpp"
3473 owdenoise_filter_deps="gpl"
3474 pan_filter_deps="swresample"
3475 perspective_filter_deps="gpl"
3476 phase_filter_deps="gpl"
3477 pp7_filter_deps="gpl"
3478 pp_filter_deps="gpl postproc"
3479 prewitt_opencl_filter_deps="opencl"
3480 procamp_vaapi_filter_deps="vaapi"
3481 program_opencl_filter_deps="opencl"
3482 pullup_filter_deps="gpl"
3483 removelogo_filter_deps="avcodec avformat swscale"
3484 repeatfields_filter_deps="gpl"
3485 resample_filter_deps="avresample"
3486 roberts_opencl_filter_deps="opencl"
3487 rubberband_filter_deps="librubberband"
3488 sab_filter_deps="gpl swscale"
3489 scale2ref_filter_deps="swscale"
3490 scale_filter_deps="swscale"
3491 scale_qsv_filter_deps="libmfx"
3492 select_filter_select="scene_sad"
3493 sharpness_vaapi_filter_deps="vaapi"
3494 showcqt_filter_deps="avcodec avformat swscale"
3495 showcqt_filter_suggest="libfontconfig libfreetype"
3496 showcqt_filter_select="fft"
3497 showfreqs_filter_deps="avcodec"
3498 showfreqs_filter_select="fft"
3499 showspectrum_filter_deps="avcodec"
3500 showspectrum_filter_select="fft"
3501 showspectrumpic_filter_deps="avcodec"
3502 showspectrumpic_filter_select="fft"
3503 signature_filter_deps="gpl avcodec avformat"
3504 smartblur_filter_deps="gpl swscale"
3505 sobel_opencl_filter_deps="opencl"
3506 sofalizer_filter_deps="libmysofa avcodec"
3507 sofalizer_filter_select="fft"
3508 spectrumsynth_filter_deps="avcodec"
3509 spectrumsynth_filter_select="fft"
3510 spp_filter_deps="gpl avcodec"
3511 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3512 sr_filter_deps="avformat swscale"
3513 sr_filter_select="dnn"
3514 stereo3d_filter_deps="gpl"
3515 subtitles_filter_deps="avformat avcodec libass"
3516 super2xsai_filter_deps="gpl"
3517 pixfmts_super2xsai_test_deps="super2xsai_filter"
3518 tinterlace_filter_deps="gpl"
3519 tinterlace_merge_test_deps="tinterlace_filter"
3520 tinterlace_pad_test_deps="tinterlace_filter"
3521 tonemap_filter_deps="const_nan"
3522 tonemap_opencl_filter_deps="opencl const_nan"
3523 transpose_opencl_filter_deps="opencl"
3524 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3525 unsharp_opencl_filter_deps="opencl"
3526 uspp_filter_deps="gpl avcodec"
3527 vaguedenoiser_filter_deps="gpl"
3528 vidstabdetect_filter_deps="libvidstab"
3529 vidstabtransform_filter_deps="libvidstab"
3530 libvmaf_filter_deps="libvmaf pthreads"
3531 zmq_filter_deps="libzmq"
3532 zoompan_filter_deps="swscale"
3533 zscale_filter_deps="libzimg const_nan"
3534 scale_vaapi_filter_deps="vaapi"
3535 vpp_qsv_filter_deps="libmfx"
3536 vpp_qsv_filter_select="qsvvpp"
3537 yadif_cuda_filter_deps="ffnvcodec cuda_nvcc"
3538
3539 # examples
3540 avio_dir_cmd_deps="avformat avutil"
3541 avio_reading_deps="avformat avcodec avutil"
3542 decode_audio_example_deps="avcodec avutil"
3543 decode_video_example_deps="avcodec avutil"
3544 demuxing_decoding_example_deps="avcodec avformat avutil"
3545 encode_audio_example_deps="avcodec avutil"
3546 encode_video_example_deps="avcodec avutil"
3547 extract_mvs_example_deps="avcodec avformat avutil"
3548 filter_audio_example_deps="avfilter avutil"
3549 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3550 filtering_video_example_deps="avfilter avcodec avformat avutil"
3551 http_multiclient_example_deps="avformat avutil fork"
3552 hw_decode_example_deps="avcodec avformat avutil"
3553 metadata_example_deps="avformat avutil"
3554 muxing_example_deps="avcodec avformat avutil swscale"
3555 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3556 remuxing_example_deps="avcodec avformat avutil"
3557 resampling_audio_example_deps="avutil swresample"
3558 scaling_video_example_deps="avutil swscale"
3559 transcode_aac_example_deps="avcodec avformat swresample"
3560 transcoding_example_deps="avfilter avcodec avformat avutil"
3561 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3562 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3563
3564 # EXTRALIBS_LIST
3565 cpu_init_extralibs="pthreads_extralibs"
3566 cws2fws_extralibs="zlib_extralibs"
3567
3568 # libraries, in any order
3569 avcodec_deps="avutil"
3570 avcodec_suggest="libm"
3571 avcodec_select="null_bsf"
3572 avdevice_deps="avformat avcodec avutil"
3573 avdevice_suggest="libm"
3574 avfilter_deps="avutil"
3575 avfilter_suggest="libm"
3576 avformat_deps="avcodec avutil"
3577 avformat_suggest="libm network zlib"
3578 avresample_deps="avutil"
3579 avresample_suggest="libm"
3580 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3581 postproc_deps="avutil gpl"
3582 postproc_suggest="libm"
3583 swresample_deps="avutil"
3584 swresample_suggest="libm libsoxr"
3585 swscale_deps="avutil"
3586 swscale_suggest="libm"
3587
3588 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3589 avfilter_extralibs="pthreads_extralibs"
3590 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3591
3592 # programs
3593 ffmpeg_deps="avcodec avfilter avformat"
3594 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3595                hflip_filter null_filter
3596                transpose_filter trim_filter vflip_filter"
3597 ffmpeg_suggest="ole32 psapi shell32"
3598 ffplay_deps="avcodec avformat swscale swresample sdl2"
3599 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3600 ffplay_suggest="shell32"
3601 ffprobe_deps="avcodec avformat"
3602 ffprobe_suggest="shell32"
3603
3604 # documentation
3605 podpages_deps="perl"
3606 manpages_deps="perl pod2man"
3607 htmlpages_deps="perl"
3608 htmlpages_deps_any="makeinfo_html texi2html"
3609 txtpages_deps="perl makeinfo"
3610 doc_deps_any="manpages htmlpages podpages txtpages"
3611
3612 # default parameters
3613
3614 logfile="ffbuild/config.log"
3615
3616 # installation paths
3617 prefix_default="/usr/local"
3618 bindir_default='${prefix}/bin'
3619 datadir_default='${prefix}/share/ffmpeg'
3620 docdir_default='${prefix}/share/doc/ffmpeg'
3621 incdir_default='${prefix}/include'
3622 libdir_default='${prefix}/lib'
3623 mandir_default='${prefix}/share/man'
3624
3625 # toolchain
3626 ar_default="ar"
3627 cc_default="gcc"
3628 cxx_default="g++"
3629 host_cc_default="gcc"
3630 doxygen_default="doxygen"
3631 install="install"
3632 ln_s_default="ln -s -f"
3633 nm_default="nm -g"
3634 pkg_config_default=pkg-config
3635 ranlib_default="ranlib"
3636 strip_default="strip"
3637 version_script='--version-script'
3638 objformat="elf32"
3639 x86asmexe_default="nasm"
3640 windres_default="windres"
3641 nvcc_default="nvcc"
3642 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3643 striptype="direct"
3644
3645 # OS
3646 target_os_default=$(tolower $(uname -s))
3647 host_os=$target_os_default
3648
3649 # machine
3650 if test "$target_os_default" = aix; then
3651     arch_default=$(uname -p)
3652     strip_default="strip -X32_64"
3653     nm_default="nm -g -X32_64"
3654 else
3655     arch_default=$(uname -m)
3656 fi
3657 cpu="generic"
3658 intrinsics="none"
3659
3660 # configurable options
3661 enable $PROGRAM_LIST
3662 enable $DOCUMENT_LIST
3663 enable $EXAMPLE_LIST
3664 enable $(filter_out avresample $LIBRARY_LIST)
3665 enable stripping
3666
3667 enable asm
3668 enable debug
3669 enable doc
3670 enable faan faandct faanidct
3671 enable optimizations
3672 enable runtime_cpudetect
3673 enable safe_bitstream_reader
3674 enable static
3675 enable swscale_alpha
3676 enable valgrind_backtrace
3677
3678 sws_max_filter_size_default=256
3679 set_default sws_max_filter_size
3680
3681 # internal components are enabled by default
3682 enable $EXTRALIBS_LIST
3683
3684 # Avoid external, non-system, libraries getting enabled by dependency resolution
3685 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3686
3687 # build settings
3688 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3689 LIBPREF="lib"
3690 LIBSUF=".a"
3691 FULLNAME='$(NAME)$(BUILDSUF)'
3692 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3693 SLIBPREF="lib"
3694 SLIBSUF=".so"
3695 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3696 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3697 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3698 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3699 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3700 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3701 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3702
3703 asflags_filter=echo
3704 cflags_filter=echo
3705 ldflags_filter=echo
3706
3707 AS_C='-c'
3708 AS_O='-o $@'
3709 CC_C='-c'
3710 CC_E='-E -o $@'
3711 CC_O='-o $@'
3712 CXX_C='-c'
3713 CXX_O='-o $@'
3714 OBJCC_C='-c'
3715 OBJCC_E='-E -o $@'
3716 OBJCC_O='-o $@'
3717 X86ASM_O='-o $@'
3718 LD_O='-o $@'
3719 LD_LIB='-l%'
3720 LD_PATH='-L'
3721 HOSTCC_C='-c'
3722 HOSTCC_E='-E -o $@'
3723 HOSTCC_O='-o $@'
3724 HOSTLD_O='-o $@'
3725 NVCC_C='-c'
3726 NVCC_O='-o $@'
3727
3728 host_extralibs='-lm'
3729 host_cflags_filter=echo
3730 host_ldflags_filter=echo
3731
3732 target_path='$(CURDIR)'
3733
3734 # since the object filename is not given with the -MM flag, the compiler
3735 # is only able to print the basename, and we must add the path ourselves
3736 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3737 DEPFLAGS='-MM'
3738
3739 mkdir -p ffbuild
3740
3741 # find source path
3742 if test -f configure; then
3743     source_path=.
3744 else
3745     source_path=$(cd $(dirname "$0"); pwd)
3746     case "$source_path" in
3747         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3748     esac
3749     test -e "$source_path/config.h" &&
3750         die "Out of tree builds are impossible with config.h in source dir."
3751 fi
3752
3753 for v in "$@"; do
3754     r=${v#*=}
3755     l=${v%"$r"}
3756     r=$(sh_quote "$r")
3757     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3758 done
3759
3760 find_things_extern(){
3761     thing=$1
3762     pattern=$2
3763     file=$source_path/$3
3764     out=${4:-$thing}
3765     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3766 }
3767
3768 find_filters_extern(){
3769     file=$source_path/$1
3770     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3771 }
3772
3773 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3774 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3775 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3776 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3777 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3778 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3779 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3780 CODEC_LIST="
3781     $ENCODER_LIST
3782     $DECODER_LIST
3783 "
3784 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3785 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3786 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3787 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3788
3789 AVCODEC_COMPONENTS_LIST="
3790     $BSF_LIST
3791     $DECODER_LIST
3792     $ENCODER_LIST
3793     $HWACCEL_LIST
3794     $PARSER_LIST
3795 "
3796
3797 AVDEVICE_COMPONENTS_LIST="
3798     $INDEV_LIST
3799     $OUTDEV_LIST
3800 "
3801
3802 AVFILTER_COMPONENTS_LIST="
3803     $FILTER_LIST
3804 "
3805
3806 AVFORMAT_COMPONENTS_LIST="
3807     $DEMUXER_LIST
3808     $MUXER_LIST
3809     $PROTOCOL_LIST
3810 "
3811
3812 ALL_COMPONENTS="
3813     $AVCODEC_COMPONENTS_LIST
3814     $AVDEVICE_COMPONENTS_LIST
3815     $AVFILTER_COMPONENTS_LIST
3816     $AVFORMAT_COMPONENTS_LIST
3817 "
3818
3819 for n in $COMPONENT_LIST; do
3820     v=$(toupper ${n%s})_LIST
3821     eval enable \$$v
3822     eval ${n}_if_any="\$$v"
3823 done
3824
3825 enable $ARCH_EXT_LIST
3826
3827 die_unknown(){
3828     echo "Unknown option \"$1\"."
3829     echo "See $0 --help for available options."
3830     exit 1
3831 }
3832
3833 print_in_columns() {
3834     cols=$(expr $ncols / 24)
3835     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3836 }
3837
3838 show_list() {
3839     suffix=_$1
3840     shift
3841     echo $* | sed s/$suffix//g | print_in_columns
3842     exit 0
3843 }
3844
3845 rand_list(){
3846     IFS=', '
3847     set -- $*
3848     unset IFS
3849     for thing; do
3850         comp=${thing%:*}
3851         prob=${thing#$comp}
3852         prob=${prob#:}
3853         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3854         echo "prob ${prob:-0.5}"
3855         printf '%s\n' $comp
3856     done
3857 }
3858
3859 do_random(){
3860     action=$1
3861     shift
3862     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3863     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3864 }
3865
3866 for opt do
3867     optval="${opt#*=}"
3868     case "$opt" in
3869         --extra-ldflags=*)
3870             add_ldflags $optval
3871         ;;
3872         --extra-ldexeflags=*)
3873             add_ldexeflags $optval
3874         ;;
3875         --extra-ldsoflags=*)
3876             add_ldsoflags $optval
3877         ;;
3878         --extra-ldlibflags=*)
3879             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3880                  "removed in the future. Use --extra-ldsoflags instead."
3881             add_ldsoflags $optval
3882         ;;
3883         --extra-libs=*)
3884             add_extralibs $optval
3885         ;;
3886         --disable-devices)
3887             disable $INDEV_LIST $OUTDEV_LIST
3888         ;;
3889         --enable-debug=*)
3890             debuglevel="$optval"
3891         ;;
3892         --disable-programs)
3893             disable $PROGRAM_LIST
3894         ;;
3895         --disable-everything)
3896             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3897         ;;
3898         --disable-all)
3899             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3900             disable $LIBRARY_LIST $PROGRAM_LIST doc
3901             enable avutil
3902         ;;
3903         --enable-random|--disable-random)
3904             action=${opt%%-random}
3905             do_random ${action#--} $COMPONENT_LIST
3906         ;;
3907         --enable-random=*|--disable-random=*)
3908             action=${opt%%-random=*}
3909             do_random ${action#--} $optval
3910         ;;
3911         --enable-sdl)
3912             enable sdl2
3913         ;;
3914         --enable-*=*|--disable-*=*)
3915             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3916             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3917             eval list=\$$(toupper $thing)_LIST
3918             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3919             list=$(filter "$name" $list)
3920             [ "$list" = "" ] && warn "Option $opt did not match anything"
3921             test $action = enable && warn_if_gets_disabled $list
3922             $action $list
3923         ;;
3924         --enable-yasm|--disable-yasm)
3925             warn "The ${opt} option is only provided for compatibility and will be\n"\
3926                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3927             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3928         ;;
3929         --yasmexe=*)
3930             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3931                  "removed in the future. Use --x86asmexe instead."
3932             x86asmexe="$optval"
3933         ;;
3934         --enable-?*|--disable-?*)
3935             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3936             if is_in $option $COMPONENT_LIST; then
3937                 test $action = disable && action=unset
3938                 eval $action \$$(toupper ${option%s})_LIST
3939             elif is_in $option $CMDLINE_SELECT; then
3940                 $action $option
3941             else
3942                 die_unknown $opt
3943             fi
3944         ;;
3945         --list-*)
3946             NAME="${opt#--list-}"
3947             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3948             NAME=${NAME%s}
3949             eval show_list $NAME \$$(toupper $NAME)_LIST
3950         ;;
3951         --help|-h) show_help
3952         ;;
3953         --quiet|-q) quiet=yes
3954         ;;
3955         --fatal-warnings) enable fatal_warnings
3956         ;;
3957         --libfuzzer=*)
3958             libfuzzer_path="$optval"
3959         ;;
3960         *)
3961             optname="${opt%%=*}"
3962             optname="${optname#--}"
3963             optname=$(echo "$optname" | sed 's/-/_/g')
3964             if is_in $optname $CMDLINE_SET; then
3965                 eval $optname='$optval'
3966             elif is_in $optname $CMDLINE_APPEND; then
3967                 append $optname "$optval"
3968             else
3969                 die_unknown $opt
3970             fi
3971         ;;
3972     esac
3973 done
3974
3975 for e in $env; do
3976     eval "export $e"
3977 done
3978
3979 if disabled autodetect; then
3980
3981     # Unless iconv is explicitely disabled by the user, we still want to probe
3982     # for the iconv from the libc.
3983     disabled iconv || enable libc_iconv
3984
3985     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3986     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3987 fi
3988 # Mark specifically enabled, but normally autodetected libraries as requested.
3989 for lib in $AUTODETECT_LIBS; do
3990     enabled $lib && request $lib
3991 done
3992 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3993 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3994 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3995
3996 disabled logging && logfile=/dev/null
3997
3998 # command line configuration sanity checks
3999
4000 # we need to build at least one lib type
4001 if ! enabled_any static shared; then
4002     cat <<EOF
4003 At least one library type must be built.
4004 Specify --enable-static to build the static libraries or --enable-shared to
4005 build the shared libraries as well. To only build the shared libraries specify
4006 --disable-static in addition to --enable-shared.
4007 EOF
4008     exit 1
4009 fi
4010
4011 die_license_disabled() {
4012     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4013 }
4014
4015 die_license_disabled_gpl() {
4016     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4017 }
4018
4019 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4020 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4021
4022 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4023 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4024
4025 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4026
4027 if enabled nonfree; then
4028     license="nonfree and unredistributable"
4029 elif enabled gplv3; then
4030     license="GPL version 3 or later"
4031 elif enabled lgplv3; then
4032     license="LGPL version 3 or later"
4033 elif enabled gpl; then
4034     license="GPL version 2 or later"
4035 else
4036     license="LGPL version 2.1 or later"
4037 fi
4038
4039 enabled_all gnutls openssl &&
4040     die "GnuTLS and OpenSSL must not be enabled at the same time."
4041
4042 enabled_all gnutls mbedtls &&
4043     die "GnuTLS and mbedTLS must not be enabled at the same time."
4044
4045 enabled_all openssl mbedtls &&
4046     die "OpenSSL and mbedTLS must not be enabled at the same time."
4047
4048 # Disable all the library-specific components if the library itself
4049 # is disabled, see AVCODEC_LIST and following _LIST variables.
4050
4051 disable_components(){
4052     disabled ${1} && disable $(
4053         eval components="\$$(toupper ${1})_COMPONENTS"
4054         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4055     )
4056 }
4057
4058 map 'disable_components $v' $LIBRARY_LIST
4059
4060 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4061 set >> $logfile
4062
4063 test -n "$valgrind" && toolchain="valgrind-memcheck"
4064
4065 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4066     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4067     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4068 }
4069
4070 case "$toolchain" in
4071     *-asan)
4072         cc_default="${toolchain%-asan}"
4073         add_cflags  -fsanitize=address
4074         add_ldflags -fsanitize=address
4075     ;;
4076     *-msan)
4077         cc_default="${toolchain%-msan}"
4078         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4079         add_ldflags -fsanitize=memory
4080     ;;
4081     *-tsan)
4082         cc_default="${toolchain%-tsan}"
4083         add_cflags  -fsanitize=thread
4084         add_ldflags -fsanitize=thread
4085         case "$toolchain" in
4086             gcc-tsan)
4087                 add_cflags  -fPIC
4088                 add_ldflags -fPIC
4089                 ;;
4090         esac
4091     ;;
4092     *-usan)
4093         cc_default="${toolchain%-usan}"
4094         add_cflags  -fsanitize=undefined
4095         add_ldflags -fsanitize=undefined
4096     ;;
4097     valgrind-*)
4098         target_exec_default="valgrind"
4099         case "$toolchain" in
4100             valgrind-massif)
4101                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
4102                 ;;
4103             valgrind-memcheck)
4104                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4105                 ;;
4106         esac
4107     ;;
4108     msvc)
4109         # Check whether the current MSVC version needs the C99 converter.
4110         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4111         # support enough of C99 to build ffmpeg. Default to the new
4112         # behaviour if the regexp was unable to match anything, since this
4113         # successfully parses the version number of existing supported
4114         # versions that require the converter (MSVC 2010 and 2012).
4115         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4116         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4117             cc_default="cl.exe"
4118             cxx_default="cl.exe"
4119         else
4120             die "Unsupported MSVC version (2013 or newer required)"
4121         fi
4122         ld_default="$source_path/compat/windows/mslink"
4123         nm_default="dumpbin.exe -symbols"
4124         ar_default="lib.exe"
4125         case "$arch" in
4126         aarch64|arm64)
4127             as_default="armasm64.exe"
4128             ;;
4129         arm*)
4130             as_default="armasm.exe"
4131             ;;
4132         esac
4133         target_os_default="win32"
4134         # Use a relative path for TMPDIR. This makes sure all the
4135         # ffconf temp files are written with a relative path, avoiding
4136         # issues with msys/win32 path conversion for MSVC parameters
4137         # such as -Fo<file> or -out:<file>.
4138         TMPDIR=.
4139     ;;
4140     icl)
4141         cc_default="icl"
4142         ld_default="xilink"
4143         nm_default="dumpbin -symbols"
4144         ar_default="xilib"
4145         target_os_default="win32"
4146         TMPDIR=.
4147     ;;
4148     gcov)
4149         add_cflags  -fprofile-arcs -ftest-coverage
4150         add_ldflags -fprofile-arcs -ftest-coverage
4151     ;;
4152     llvm-cov)
4153         add_cflags -fprofile-arcs -ftest-coverage
4154         add_ldflags --coverage
4155     ;;
4156     hardened)
4157         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4158         add_cflags   -fno-strict-overflow -fstack-protector-all
4159         add_ldflags  -Wl,-z,relro -Wl,-z,now
4160         add_cflags   -fPIE
4161         add_ldexeflags -fPIE -pie
4162     ;;
4163     ?*)
4164         die "Unknown toolchain $toolchain"
4165     ;;
4166 esac
4167
4168 if test -n "$cross_prefix"; then
4169     test -n "$arch" && test -n "$target_os" ||
4170         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4171     enable cross_compile
4172 fi
4173
4174 set_default target_os
4175 if test "$target_os" = android; then
4176     cc_default="clang"
4177 fi
4178
4179 ar_default="${cross_prefix}${ar_default}"
4180 cc_default="${cross_prefix}${cc_default}"
4181 cxx_default="${cross_prefix}${cxx_default}"
4182 nm_default="${cross_prefix}${nm_default}"
4183 pkg_config_default="${cross_prefix}${pkg_config_default}"
4184 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4185     ranlib_default="${cross_prefix}${ranlib_default} -D"
4186 else
4187     ranlib_default="${cross_prefix}${ranlib_default}"
4188 fi
4189 strip_default="${cross_prefix}${strip_default}"
4190 windres_default="${cross_prefix}${windres_default}"
4191
4192 sysinclude_default="${sysroot}/usr/include"
4193
4194 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4195     target_exec x86asmexe nvcc
4196 enabled cross_compile || host_cc_default=$cc
4197 set_default host_cc
4198
4199 pkg_config_fail_message=""
4200 if ! $pkg_config --version >/dev/null 2>&1; then
4201     warn "$pkg_config not found, library detection may fail."
4202     pkg_config=false
4203 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4204     pkg_config_fail_message="
4205 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4206 fi
4207
4208 if test $doxygen != $doxygen_default && \
4209   ! $doxygen --version >/dev/null 2>&1; then
4210     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4211 fi
4212
4213 exesuf() {
4214     case $1 in
4215         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4216     esac
4217 }
4218
4219 EXESUF=$(exesuf $target_os)
4220 HOSTEXESUF=$(exesuf $host_os)
4221
4222 # set temporary file name
4223 : ${TMPDIR:=$TEMPDIR}
4224 : ${TMPDIR:=$TMP}
4225 : ${TMPDIR:=/tmp}
4226
4227 if [ -n "$tempprefix" ] ; then
4228     mktemp(){
4229         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4230         echo "$tmpname"
4231         mkdir "$tmpname"
4232     }
4233 elif ! test_cmd mktemp -u XXXXXX; then
4234     # simple replacement for missing mktemp
4235     # NOT SAFE FOR GENERAL USE
4236     mktemp(){
4237         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4238         echo "$tmpname"
4239         mkdir "$tmpname"
4240     }
4241 fi
4242
4243 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4244     die "Unable to create temporary directory in $TMPDIR."
4245
4246 tmpfile(){
4247     tmp="${FFTMPDIR}/test"$2
4248     (set -C; exec > $tmp) 2> /dev/null ||
4249         die "Unable to create temporary file in $FFTMPDIR."
4250     eval $1=$tmp
4251 }
4252
4253 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4254 trap 'exit 2' INT
4255
4256 tmpfile TMPASM .asm
4257 tmpfile TMPC   .c
4258 tmpfile TMPCPP .cpp
4259 tmpfile TMPE   $EXESUF
4260 tmpfile TMPH   .h
4261 tmpfile TMPM   .m
4262 tmpfile TMPCU  .cu
4263 tmpfile TMPO   .o
4264 tmpfile TMPS   .S
4265 tmpfile TMPSH  .sh
4266 tmpfile TMPV   .ver
4267
4268 unset -f mktemp
4269
4270 chmod +x $TMPE
4271
4272 # make sure we can execute files in $TMPDIR
4273 cat > $TMPSH 2>> $logfile <<EOF
4274 #! /bin/sh
4275 EOF
4276 chmod +x $TMPSH >> $logfile 2>&1
4277 if ! $TMPSH >> $logfile 2>&1; then
4278     cat <<EOF
4279 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4280 variable to another directory and make sure that it is not mounted noexec.
4281 EOF
4282     die "Sanity test failed."
4283 fi
4284
4285 armasm_flags(){
4286     for flag; do
4287         case $flag in
4288             # Filter out MSVC cl.exe options from cflags that shouldn't
4289             # be passed to gas-preprocessor
4290             -M[TD]*)                                            ;;
4291             *)                  echo $flag                      ;;
4292         esac
4293    done
4294 }
4295
4296 cparser_flags(){
4297     for flag; do
4298         case $flag in
4299             -Wno-switch)             echo -Wno-switch-enum ;;
4300             -Wno-format-zero-length) ;;
4301             -Wdisabled-optimization) ;;
4302             -Wno-pointer-sign)       echo -Wno-other ;;
4303             *)                       echo $flag ;;
4304         esac
4305     done
4306 }
4307
4308 msvc_common_flags(){
4309     for flag; do
4310         case $flag in
4311             # In addition to specifying certain flags under the compiler
4312             # specific filters, they must be specified here as well or else the
4313             # generic catch all at the bottom will print the original flag.
4314             -Wall)                ;;
4315             -Wextra)              ;;
4316             -std=c99)             ;;
4317             # Common flags
4318             -fomit-frame-pointer) ;;
4319             -g)                   echo -Z7 ;;
4320             -fno-math-errno)      ;;
4321             -fno-common)          ;;
4322             -fno-signed-zeros)    ;;
4323             -fPIC)                ;;
4324             -mthumb)              ;;
4325             -march=*)             ;;
4326             -lz)                  echo zlib.lib ;;
4327             -lx264)               echo libx264.lib ;;
4328             -lstdc++)             ;;
4329             -l*)                  echo ${flag#-l}.lib ;;
4330             -LARGEADDRESSAWARE)   echo $flag ;;
4331             -L*)                  echo -libpath:${flag#-L} ;;
4332             *)                    echo $flag ;;
4333         esac
4334     done
4335 }
4336
4337 msvc_flags(){
4338     msvc_common_flags "$@"
4339     for flag; do
4340         case $flag in
4341             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4342                                        -wd4554 ;;
4343             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4344                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4345                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4346                                        -wd4307 \
4347                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4348         esac
4349     done
4350 }
4351
4352 icl_flags(){
4353     msvc_common_flags "$@"
4354     for flag; do
4355         case $flag in
4356             # Despite what Intel's documentation says -Wall, which is supported
4357             # on Windows, does enable remarks so disable them here.
4358             -Wall)                echo $flag -Qdiag-disable:remark ;;
4359             -std=c99)             echo -Qstd=c99 ;;
4360             -flto)                echo -ipo ;;
4361         esac
4362     done
4363 }
4364
4365 icc_flags(){
4366     for flag; do
4367         case $flag in
4368             -flto)                echo -ipo ;;
4369             *)                    echo $flag ;;
4370         esac
4371     done
4372 }
4373
4374 suncc_flags(){
4375     for flag; do
4376         case $flag in
4377             -march=*|-mcpu=*)
4378                 case "${flag#*=}" in
4379                     native)                   echo -xtarget=native       ;;
4380                     v9|niagara)               echo -xarch=sparc          ;;
4381                     ultrasparc)               echo -xarch=sparcvis       ;;
4382                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4383                     i586|pentium)             echo -xchip=pentium        ;;
4384                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4385                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4386                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4387                     pentium4*)          echo -xtarget=pentium4           ;;
4388                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4389                     *-sse3)             echo -xarch=sse3                 ;;
4390                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4391                     bonnell)                   echo -xarch=ssse3         ;;
4392                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4393                     westmere)                  echo -xtarget=westmere    ;;
4394                     silvermont)                echo -xarch=sse4_2        ;;
4395                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4396                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4397                                                echo -xarch=avx           ;;
4398                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4399                     btver1)                    echo -xarch=amdsse4a      ;;
4400                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4401                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4402                     k8|opteron|athlon64|athlon-fx)
4403                                                echo -xarch=sse2a         ;;
4404                     athlon*)                   echo -xarch=pentium_proa  ;;
4405                 esac
4406                 ;;
4407             -std=c99)             echo -xc99              ;;
4408             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4409             -fPIC)                echo -KPIC -xcode=pic32 ;;
4410             -W*,*)                echo $flag              ;;
4411             -f*-*|-W*|-mimpure-text)                      ;;
4412             -shared)              echo -G                 ;;
4413             *)                    echo $flag              ;;
4414         esac
4415     done
4416 }
4417
4418 probe_cc(){
4419     pfx=$1
4420     _cc=$2
4421     first=$3
4422
4423     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4424     unset _ld_o _ldflags _ld_lib _ld_path
4425     unset _depflags _DEPCMD _DEPFLAGS
4426     _flags_filter=echo
4427
4428     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4429         true # no-op to avoid reading stdin in following checks
4430     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4431         _type=llvm_gcc
4432         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4433         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4434         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4435         _cflags_speed='-O3'
4436         _cflags_size='-Os'
4437     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4438         _type=gcc
4439         gcc_version=$($_cc --version | head -n1)
4440         gcc_basever=$($_cc -dumpversion)
4441         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4442         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4443         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4444         case $gcc_basever in
4445             2) ;;
4446             2.*) ;;
4447             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4448         esac
4449         if [ "$first" = true ]; then
4450             case $gcc_basever in
4451                 4.2*)
4452                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4453             esac
4454         fi
4455         _cflags_speed='-O3'
4456         _cflags_size='-Os'
4457     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4458         _type=icc
4459         _ident=$($_cc --version | head -n1)
4460         _depflags='-MMD'
4461         _cflags_speed='-O3'
4462         _cflags_size='-Os'
4463         _cflags_noopt='-O1'
4464         _flags_filter=icc_flags
4465     elif $_cc -v 2>&1 | grep -q xlc; then
4466         _type=xlc
4467         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4468         _cflags_speed='-O5'
4469         _cflags_size='-O5 -qcompact'
4470     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4471         test -d "$sysroot" || die "No valid sysroot specified."
4472         _type=armcc
4473         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4474         armcc_conf="$PWD/armcc.conf"
4475         $_cc --arm_linux_configure                 \
4476              --arm_linux_config_file="$armcc_conf" \
4477              --configure_sysroot="$sysroot"        \
4478              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4479              die "Error creating armcc configuration file."
4480         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4481         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4482         as_default="${cross_prefix}gcc"
4483         _depflags='-MMD'
4484         _cflags_speed='-O3'
4485         _cflags_size='-Os'
4486     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4487         _type=clang
4488         _ident=$($_cc --version 2>/dev/null | head -n1)
4489         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4490         _cflags_speed='-O3'
4491         _cflags_size='-Oz'
4492     elif $_cc -V 2>&1 | grep -q Sun; then
4493         _type=suncc
4494         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4495         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4496         _DEPFLAGS='-xM1 -xc99'
4497         _ldflags='-std=c99'
4498         _cflags_speed='-O5'
4499         _cflags_size='-O5 -xspace'
4500         _flags_filter=suncc_flags
4501     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4502         _type=pathscale
4503         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4504         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4505         _cflags_speed='-O2'
4506         _cflags_size='-Os'
4507         _flags_filter='filter_out -Wdisabled-optimization'
4508     elif $_cc -v 2>&1 | grep -q Open64; then
4509         _type=open64
4510         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4511         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4512         _cflags_speed='-O2'
4513         _cflags_size='-Os'
4514         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4515     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4516         _type=armasm
4517         _ident=$($_cc | head -n1)
4518         # 4509: "This form of conditional instruction is deprecated"
4519         _flags="-nologo -ignore 4509"
4520         _flags_filter=armasm_flags
4521     elif $_cc 2>&1 | grep -q Intel; then
4522         _type=icl
4523         _ident=$($_cc 2>&1 | head -n1)
4524         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4525         # Not only is O3 broken on 13.x+ but it is slower on all previous
4526         # versions (tested) as well.
4527         _cflags_speed="-O2"
4528         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4529         if $_cc 2>&1 | grep -q Linker; then
4530             _ld_o='-out:$@'
4531         else
4532             _ld_o='-Fe$@'
4533         fi
4534         _cc_o='-Fo$@'
4535         _cc_e='-P'
4536         _flags_filter=icl_flags
4537         _ld_lib='lib%.a'
4538         _ld_path='-libpath:'
4539         # -Qdiag-error to make icl error when seeing certain unknown arguments
4540         _flags='-nologo -Qdiag-error:4044,10157'
4541         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4542         # with MSVC which enables it by default.
4543         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4544         disable stripping
4545     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4546         # lld can emulate multiple different linkers; in ms link.exe mode,
4547         # the -? parameter gives the help output which contains an identifyable
4548         # string, while it gives an error in other modes.
4549         _type=lld-link
4550         # The link.exe mode doesn't have a switch for getting the version,
4551         # but we can force it back to gnu mode and get the version from there.
4552         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4553         _ld_o='-out:$@'
4554         _flags_filter=msvc_flags
4555         _ld_lib='lib%.a'
4556         _ld_path='-libpath:'
4557     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4558         _type=msvc
4559         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4560         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4561         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4562         _cflags_speed="-O2"
4563         _cflags_size="-O1"
4564         _cflags_noopt="-O1"
4565         if $_cc -nologo- 2>&1 | grep -q Linker; then
4566             _ld_o='-out:$@'
4567         else
4568             _ld_o='-Fe$@'
4569         fi
4570         _cc_o='-Fo$@'
4571         _cc_e='-P -Fi$@'
4572         _flags_filter=msvc_flags
4573         _ld_lib='lib%.a'
4574         _ld_path='-libpath:'
4575         _flags='-nologo'
4576         disable stripping
4577     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4578         _type=cparser
4579         _ident=$($_cc --version | head -n1)
4580         _depflags='-MMD'
4581         _cflags_speed='-O4'
4582         _cflags_size='-O2'
4583         _flags_filter=cparser_flags
4584     fi
4585
4586     eval ${pfx}_type=\$_type
4587     eval ${pfx}_ident=\$_ident
4588 }
4589
4590 set_ccvars(){
4591     eval ${1}_C=\${_cc_c-\${${1}_C}}
4592     eval ${1}_E=\${_cc_e-\${${1}_E}}
4593     eval ${1}_O=\${_cc_o-\${${1}_O}}
4594
4595     if [ -n "$_depflags" ]; then
4596         eval ${1}_DEPFLAGS=\$_depflags
4597     else
4598         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4599         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4600         eval DEP${1}FLAGS=\$_flags
4601     fi
4602 }
4603
4604 probe_cc cc "$cc" "true"
4605 cflags_filter=$_flags_filter
4606 cflags_speed=$_cflags_speed
4607 cflags_size=$_cflags_size
4608 cflags_noopt=$_cflags_noopt
4609 add_cflags $_flags $_cflags
4610 cc_ldflags=$_ldflags
4611 set_ccvars CC
4612 set_ccvars CXX
4613
4614 probe_cc hostcc "$host_cc"
4615 host_cflags_filter=$_flags_filter
4616 host_cflags_speed=$_cflags_speed
4617 add_host_cflags  $_flags $_cflags
4618 set_ccvars HOSTCC
4619
4620 test -n "$cc_type" && enable $cc_type ||
4621     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4622
4623 : ${as_default:=$cc}
4624 : ${objcc_default:=$cc}
4625 : ${dep_cc_default:=$cc}
4626 : ${ld_default:=$cc}
4627 : ${host_ld_default:=$host_cc}
4628 set_default ar as objcc dep_cc ld ln_s host_ld windres
4629
4630 probe_cc as "$as"
4631 asflags_filter=$_flags_filter
4632 add_asflags $_flags $_cflags
4633 set_ccvars AS
4634
4635 probe_cc objcc "$objcc"
4636 objcflags_filter=$_flags_filter
4637 add_objcflags $_flags $_cflags
4638 set_ccvars OBJC
4639
4640 probe_cc ld "$ld"
4641 ldflags_filter=$_flags_filter
4642 add_ldflags $_flags $_ldflags
4643 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4644 LD_O=${_ld_o-$LD_O}
4645 LD_LIB=${_ld_lib-$LD_LIB}
4646 LD_PATH=${_ld_path-$LD_PATH}
4647
4648 probe_cc hostld "$host_ld"
4649 host_ldflags_filter=$_flags_filter
4650 add_host_ldflags $_flags $_ldflags
4651 HOSTLD_O=${_ld_o-$HOSTLD_O}
4652
4653 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4654     probe_cc depcc "$dep_cc"
4655     CCDEP=${_DEPCMD:-$DEPCMD}
4656     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4657     DEPCCFLAGS=$_flags
4658 fi
4659
4660 if $ar 2>&1 | grep -q Microsoft; then
4661     arflags="-nologo"
4662     ar_o='-out:$@'
4663 elif $ar 2>&1 | grep -q "\[D\] "; then
4664     arflags="rcD"
4665     ar_o='$@'
4666 else
4667     arflags="rc"
4668     ar_o='$@'
4669 fi
4670
4671 add_cflags $extra_cflags
4672 add_cxxflags $extra_cxxflags
4673 add_objcflags $extra_objcflags
4674 add_asflags $extra_cflags
4675
4676 if test -n "$sysroot"; then
4677     case "$cc_type" in
4678         gcc|llvm_gcc|clang)
4679             add_cppflags --sysroot="$sysroot"
4680             add_ldflags --sysroot="$sysroot"
4681         ;;
4682     esac
4683 fi
4684
4685 if test "$cpu" = host; then
4686     enabled cross_compile &&
4687         die "--cpu=host makes no sense when cross-compiling."
4688
4689     case "$cc_type" in
4690         gcc|llvm_gcc)
4691             check_native(){
4692                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4693                 sed -n "/cc1.*$1=/{
4694                             s/.*$1=\\([^ ]*\\).*/\\1/
4695                             p
4696                             q
4697                         }" $TMPE
4698             }
4699             cpu=$(check_native -march || check_native -mcpu)
4700         ;;
4701         clang)
4702             check_native(){
4703                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4704                 sed -n "/cc1.*-target-cpu /{
4705                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4706                             p
4707                             q
4708                         }" $TMPE
4709             }
4710             cpu=$(check_native -march)
4711         ;;
4712     esac
4713
4714     test "${cpu:-host}" = host &&
4715         die "--cpu=host not supported with compiler $cc"
4716 fi
4717
4718 # Deal with common $arch aliases
4719 case "$arch" in
4720     aarch64|arm64)
4721         arch="aarch64"
4722     ;;
4723     arm*|iPad*|iPhone*)
4724         arch="arm"
4725     ;;
4726     mips*|IP*)
4727         case "$arch" in
4728         *el)
4729             add_cppflags -EL
4730             add_ldflags -EL
4731         ;;
4732         *eb)
4733             add_cppflags -EB
4734             add_ldflags -EB
4735         ;;
4736         esac
4737         arch="mips"
4738     ;;
4739     parisc*|hppa*)
4740         arch="parisc"
4741     ;;
4742     "Power Macintosh"|ppc*|powerpc*)
4743         arch="ppc"
4744     ;;
4745     s390|s390x)
4746         arch="s390"
4747     ;;
4748     sh4|sh)
4749         arch="sh4"
4750     ;;
4751     sun4*|sparc*)
4752         arch="sparc"
4753     ;;
4754     tilegx|tile-gx)
4755         arch="tilegx"
4756     ;;
4757     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4758         arch="x86"
4759     ;;
4760 esac
4761
4762 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4763 enable $arch
4764
4765 # Add processor-specific flags
4766 if enabled aarch64; then
4767
4768     case $cpu in
4769         armv*)
4770             cpuflags="-march=$cpu"
4771         ;;
4772         *)
4773             cpuflags="-mcpu=$cpu"
4774         ;;
4775     esac
4776
4777 elif enabled alpha; then
4778
4779     cpuflags="-mcpu=$cpu"
4780
4781 elif enabled arm; then
4782
4783     check_arm_arch() {
4784         test_cpp_condition stddef.h \
4785             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4786             $cpuflags
4787     }
4788
4789     probe_arm_arch() {
4790         if   check_arm_arch 4;        then echo armv4
4791         elif check_arm_arch 4T;       then echo armv4t
4792         elif check_arm_arch 5;        then echo armv5
4793         elif check_arm_arch 5E;       then echo armv5e
4794         elif check_arm_arch 5T;       then echo armv5t
4795         elif check_arm_arch 5TE;      then echo armv5te
4796         elif check_arm_arch 5TEJ;     then echo armv5te
4797         elif check_arm_arch 6;        then echo armv6
4798         elif check_arm_arch 6J;       then echo armv6j
4799         elif check_arm_arch 6K;       then echo armv6k
4800         elif check_arm_arch 6Z;       then echo armv6z
4801         elif check_arm_arch 6KZ;      then echo armv6zk
4802         elif check_arm_arch 6ZK;      then echo armv6zk
4803         elif check_arm_arch 6T2;      then echo armv6t2
4804         elif check_arm_arch 7;        then echo armv7
4805         elif check_arm_arch 7A  7_A;  then echo armv7-a
4806         elif check_arm_arch 7S;       then echo armv7-a
4807         elif check_arm_arch 7R  7_R;  then echo armv7-r
4808         elif check_arm_arch 7M  7_M;  then echo armv7-m
4809         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4810         elif check_arm_arch 8A  8_A;  then echo armv8-a
4811         fi
4812     }
4813
4814     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4815
4816     case $cpu in
4817         armv*)
4818             cpuflags="-march=$cpu"
4819             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4820         ;;
4821         *)
4822             cpuflags="-mcpu=$cpu"
4823             case $cpu in
4824                 cortex-a*)                               subarch=armv7a  ;;
4825                 cortex-r*)                               subarch=armv7r  ;;
4826                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4827                 arm11*)                                  subarch=armv6   ;;
4828                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4829                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4830                 *)                             subarch=$(probe_arm_arch) ;;
4831             esac
4832         ;;
4833     esac
4834
4835     case "$subarch" in
4836         armv5t*)    enable fast_clz                ;;
4837         armv[6-8]*)
4838             enable fast_clz
4839             disabled fast_unaligned || enable fast_unaligned
4840             ;;
4841     esac
4842
4843 elif enabled avr32; then
4844
4845     case $cpu in
4846         ap7[02]0[0-2])
4847             subarch="avr32_ap"
4848             cpuflags="-mpart=$cpu"
4849         ;;
4850         ap)
4851             subarch="avr32_ap"
4852             cpuflags="-march=$cpu"
4853         ;;
4854         uc3[ab]*)
4855             subarch="avr32_uc"
4856             cpuflags="-mcpu=$cpu"
4857         ;;
4858         uc)
4859             subarch="avr32_uc"
4860             cpuflags="-march=$cpu"
4861         ;;
4862     esac
4863
4864 elif enabled bfin; then
4865
4866     cpuflags="-mcpu=$cpu"
4867
4868 elif enabled mips; then
4869
4870     cpuflags="-march=$cpu"
4871
4872     if [ "$cpu" != "generic" ]; then
4873         disable mips32r2
4874         disable mips32r5
4875         disable mips64r2
4876         disable mips32r6
4877         disable mips64r6
4878         disable loongson2
4879         disable loongson3
4880
4881         case $cpu in
4882             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4883                 enable mips32r2
4884                 disable msa
4885             ;;
4886             p5600|i6400|p6600)
4887                 disable mipsdsp
4888                 disable mipsdspr2
4889             ;;
4890             loongson*)
4891                 enable loongson2
4892                 enable loongson3
4893                 enable local_aligned
4894                 enable simd_align_16
4895                 enable fast_64bit
4896                 enable fast_clz
4897                 enable fast_cmov
4898                 enable fast_unaligned
4899                 disable aligned_stack
4900                 disable mipsdsp
4901                 disable mipsdspr2
4902                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4903                 if [ $cc == gcc ]; then
4904                     gcc_version=$(gcc -dumpversion)
4905                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4906                         expensive_optimization_flag=""
4907                     else
4908                         expensive_optimization_flag="-fno-expensive-optimizations"
4909                     fi
4910                 fi
4911                 case $cpu in
4912                     loongson3*)
4913                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4914                     ;;
4915                     loongson2e)
4916                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4917                     ;;
4918                     loongson2f)
4919                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4920                     ;;
4921                 esac
4922             ;;
4923             *)
4924                 # Unknown CPU. Disable everything.
4925                 warn "unknown CPU. Disabling all MIPS optimizations."
4926                 disable mipsfpu
4927                 disable mipsdsp
4928                 disable mipsdspr2
4929                 disable msa
4930                 disable mmi
4931             ;;
4932         esac
4933
4934         case $cpu in
4935             24kc)
4936                 disable mipsfpu
4937                 disable mipsdsp
4938                 disable mipsdspr2
4939             ;;
4940             24kf*)
4941                 disable mipsdsp
4942                 disable mipsdspr2
4943             ;;
4944             24kec|34kc|1004kc)
4945                 disable mipsfpu
4946                 disable mipsdspr2
4947             ;;
4948             24kef*|34kf*|1004kf*)
4949                 disable mipsdspr2
4950             ;;
4951             74kc)
4952                 disable mipsfpu
4953             ;;
4954             p5600)
4955                 enable mips32r5
4956                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4957             ;;
4958             i6400)
4959                 enable mips64r6
4960                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4961             ;;
4962             p6600)
4963                 enable mips64r6
4964                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4965             ;;
4966         esac
4967     else
4968         # We do not disable anything. Is up to the user to disable the unwanted features.
4969         warn 'generic cpu selected'
4970     fi
4971
4972 elif enabled ppc; then
4973
4974     disable ldbrx
4975
4976     case $(tolower $cpu) in
4977         601|ppc601|powerpc601)
4978             cpuflags="-mcpu=601"
4979             disable altivec
4980         ;;
4981         603*|ppc603*|powerpc603*)
4982             cpuflags="-mcpu=603"
4983             disable altivec
4984         ;;
4985         604*|ppc604*|powerpc604*)
4986             cpuflags="-mcpu=604"
4987             disable altivec
4988         ;;
4989         g3|75*|ppc75*|powerpc75*)
4990             cpuflags="-mcpu=750"
4991             disable altivec
4992         ;;
4993         g4|745*|ppc745*|powerpc745*)
4994             cpuflags="-mcpu=7450"
4995             disable vsx
4996         ;;
4997         74*|ppc74*|powerpc74*)
4998             cpuflags="-mcpu=7400"
4999             disable vsx
5000         ;;
5001         g5|970|ppc970|powerpc970)
5002             cpuflags="-mcpu=970"
5003             disable vsx
5004         ;;
5005         power[3-6]*)
5006             cpuflags="-mcpu=$cpu"
5007             disable vsx
5008         ;;
5009         power[7-8]*)
5010             cpuflags="-mcpu=$cpu"
5011         ;;
5012         cell)
5013             cpuflags="-mcpu=cell"
5014             enable ldbrx
5015             disable vsx
5016         ;;
5017         e500mc)
5018             cpuflags="-mcpu=e500mc"
5019             disable altivec
5020         ;;
5021         e500v2)
5022             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5023             disable altivec
5024             disable dcbzl
5025         ;;
5026         e500)
5027             cpuflags="-mcpu=8540 -mhard-float"
5028             disable altivec
5029             disable dcbzl
5030         ;;
5031     esac
5032
5033 elif enabled sparc; then
5034
5035     case $cpu in
5036         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5037             cpuflags="-mcpu=$cpu"
5038         ;;
5039         ultrasparc*|niagara[234])
5040             cpuflags="-mcpu=$cpu"
5041         ;;
5042     esac
5043
5044 elif enabled x86; then
5045
5046     case $cpu in
5047         i[345]86|pentium)
5048             cpuflags="-march=$cpu"
5049             disable i686
5050             disable mmx
5051         ;;
5052         # targets that do NOT support nopl and conditional mov (cmov)
5053         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5054             cpuflags="-march=$cpu"
5055             disable i686
5056         ;;
5057         # targets that do support nopl and conditional mov (cmov)
5058         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5059         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5060         |amdfam10|barcelona|b[dt]ver*|znver*)
5061             cpuflags="-march=$cpu"
5062             enable i686
5063             enable fast_cmov
5064         ;;
5065         # targets that do support conditional mov but on which it's slow
5066         pentium4|pentium4m|prescott|nocona)
5067             cpuflags="-march=$cpu"
5068             enable i686
5069             disable fast_cmov
5070         ;;
5071     esac
5072
5073 fi
5074
5075 if [ "$cpu" != generic ]; then
5076     add_cflags  $cpuflags
5077     add_asflags $cpuflags
5078     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5079 fi
5080
5081 # compiler sanity check
5082 test_exec <<EOF
5083 int main(void){ return 0; }
5084 EOF
5085 if test "$?" != 0; then
5086     echo "$cc is unable to create an executable file."
5087     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5088         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5089         echo "Only do this if you know what cross compiling means."
5090     fi
5091     die "C compiler test failed."
5092 fi
5093
5094 add_cppflags -D_ISOC99_SOURCE
5095 add_cxxflags -D__STDC_CONSTANT_MACROS
5096 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5097
5098 # some compilers silently accept -std=c11, so we also need to check that the
5099 # version macro is defined properly
5100 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5101     add_cflags -std=c11 ||
5102     check_cflags -std=c99
5103
5104 check_cppflags -D_FILE_OFFSET_BITS=64
5105 check_cppflags -D_LARGEFILE_SOURCE
5106
5107 add_host_cppflags -D_ISOC99_SOURCE
5108 check_host_cflags -std=c99
5109 check_host_cflags -Wall
5110 check_host_cflags $host_cflags_speed
5111
5112 check_64bit(){
5113     arch32=$1
5114     arch64=$2
5115     expr=${3:-'sizeof(void *) > 4'}
5116     test_code cc "" "int test[2*($expr) - 1]" &&
5117         subarch=$arch64 || subarch=$arch32
5118     enable $subarch
5119 }
5120
5121 case "$arch" in
5122     aarch64|alpha|ia64)
5123         enabled shared && enable_weak pic
5124     ;;
5125     mips)
5126         check_64bit mips mips64 '_MIPS_SIM > 1'
5127         enabled shared && enable_weak pic
5128     ;;
5129     parisc)
5130         check_64bit parisc parisc64
5131         enabled shared && enable_weak pic
5132     ;;
5133     ppc)
5134         check_64bit ppc ppc64
5135         enabled shared && enable_weak pic
5136     ;;
5137     s390)
5138         check_64bit s390 s390x
5139         enabled shared && enable_weak pic
5140     ;;
5141     sparc)
5142         check_64bit sparc sparc64
5143         enabled shared && enable_weak pic
5144     ;;
5145     x86)
5146         check_64bit x86_32 x86_64
5147         # Treat x32 as x64 for now. Note it also needs pic if shared
5148         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5149             subarch=x86_64 && enable x86_64 && disable x86_32
5150         if enabled x86_64; then
5151             enabled shared && enable_weak pic
5152             objformat=elf64
5153         fi
5154     ;;
5155 esac
5156
5157 # OS specific
5158 case $target_os in
5159     aix)
5160         SHFLAGS=-shared
5161         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5162         enabled shared && add_ldflags -Wl,-brtl
5163         arflags='-Xany -r -c'
5164         striptype=""
5165         ;;
5166     android)
5167         disable symver
5168         enable section_data_rel_ro
5169         add_cflags -fPIE
5170         add_ldexeflags -fPIE -pie
5171         SLIB_INSTALL_NAME='$(SLIBNAME)'
5172         SLIB_INSTALL_LINKS=
5173         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5174         ;;
5175     haiku)
5176         prefix_default="/boot/common"
5177         network_extralibs="-lnetwork"
5178         host_extralibs=
5179         ;;
5180     sunos)
5181         SHFLAGS='-shared -Wl,-h,$$(@F)'
5182         enabled x86 && append SHFLAGS -mimpure-text
5183         network_extralibs="-lsocket -lnsl"
5184         add_cppflags -D__EXTENSIONS__
5185         # When using suncc to build, the Solaris linker will mark
5186         # an executable with each instruction set encountered by
5187         # the Solaris assembler.  As our libraries contain their own
5188         # guards for processor-specific code, instead suppress
5189         # generation of the HWCAPS ELF section on Solaris x86 only.
5190         enabled_all suncc x86 &&
5191             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5192             add_ldflags -Wl,-M,mapfile
5193         nm_default='nm -P -g'
5194         striptype=""
5195         version_script='-M'
5196         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5197         ;;
5198     netbsd)
5199         disable symver
5200         oss_indev_extralibs="-lossaudio"
5201         oss_outdev_extralibs="-lossaudio"
5202         enabled gcc || check_ldflags -Wl,-zmuldefs
5203         ;;
5204     openbsd|bitrig)
5205         disable symver
5206         striptype=""
5207         SHFLAGS='-shared'
5208         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5209         SLIB_INSTALL_LINKS=
5210         oss_indev_extralibs="-lossaudio"
5211         oss_outdev_extralibs="-lossaudio"
5212         ;;
5213     dragonfly)
5214         disable symver
5215         ;;
5216     freebsd)
5217         ;;
5218     bsd/os)
5219         add_extralibs -lpoll -lgnugetopt
5220         strip="strip -d"
5221         ;;
5222     darwin)
5223         enabled ppc && add_asflags -force_cpusubtype_ALL
5224         install_name_dir_default='$(SHLIBDIR)'
5225         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5226         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5227         strip="${strip} -x"
5228         add_ldflags -Wl,-dynamic,-search_paths_first
5229         check_cflags -Werror=partial-availability
5230         SLIBSUF=".dylib"
5231         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5232         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5233         enabled x86_64 && objformat="macho64" || objformat="macho32"
5234         enabled_any pic shared x86_64 ||
5235             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5236         check_headers dispatch/dispatch.h &&
5237             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5238         if test -n "$sysroot"; then
5239             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5240             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5241         fi
5242         version_script='-exported_symbols_list'
5243         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5244         ;;
5245     msys*)
5246         die "Native MSYS builds are discouraged, please use the MINGW environment."
5247         ;;
5248     mingw32*|mingw64*)
5249         target_os=mingw32
5250         LIBTARGET=i386
5251         if enabled x86_64; then
5252             LIBTARGET="i386:x86-64"
5253         elif enabled arm; then
5254             LIBTARGET="arm"
5255         elif enabled aarch64; then
5256             LIBTARGET="arm64"
5257         fi
5258         if enabled shared; then
5259             # Cannot build both shared and static libs when using dllimport.
5260             disable static
5261         fi
5262         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5263         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5264         shlibdir_default="$bindir_default"
5265         SLIBPREF=""
5266         SLIBSUF=".dll"
5267         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5268         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5269         if test_cmd lib.exe -list; then
5270             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5271             if enabled x86_64; then
5272                 LIBTARGET=x64
5273             fi
5274         else
5275             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5276         fi
5277         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5278         SLIB_INSTALL_LINKS=
5279         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5280         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5281         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5282         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5283         enabled x86_64 && objformat="win64" || objformat="win32"
5284         dlltool="${cross_prefix}dlltool"
5285         ranlib=:
5286         enable dos_paths
5287         check_ldflags -Wl,--nxcompat,--dynamicbase
5288         # Lets work around some stupidity in binutils.
5289         # ld will strip relocations from executables even though we need them
5290         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5291         # however ld then forgets what the entry point should be (oops) so we
5292         # have to manually (re)set it.
5293         if enabled x86_32; then
5294             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5295         elif enabled x86_64; then
5296             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5297             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5298             # Set image base >4GB for extra entropy with HEASLR
5299             add_ldexeflags -Wl,--image-base,0x140000000
5300             append SHFLAGS -Wl,--image-base,0x180000000
5301         fi
5302         ;;
5303     win32|win64)
5304         disable symver
5305         if enabled shared; then
5306             # Link to the import library instead of the normal static library
5307             # for shared libs.
5308             LD_LIB='%.lib'
5309             # Cannot build both shared and static libs with MSVC or icl.
5310             disable static
5311         fi
5312         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5313         shlibdir_default="$bindir_default"
5314         SLIBPREF=""
5315         SLIBSUF=".dll"
5316         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5317         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5318         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5319         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5320         SLIB_INSTALL_LINKS=
5321         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5322         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5323         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5324         enabled x86_64 && objformat="win64" || objformat="win32"
5325         ranlib=:
5326         enable dos_paths
5327         ;;
5328     cygwin*)
5329         target_os=cygwin
5330         shlibdir_default="$bindir_default"
5331         SLIBPREF="cyg"
5332         SLIBSUF=".dll"
5333         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5334         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5335         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5336         SLIB_INSTALL_LINKS=
5337         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5338         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5339         enabled x86_64 && objformat="win64" || objformat="win32"
5340         enable dos_paths
5341         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5342         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5343         ;;
5344     *-dos|freedos|opendos)
5345         network_extralibs="-lsocket"
5346         objformat="coff"
5347         enable dos_paths
5348         ;;
5349     linux)
5350         enable section_data_rel_ro
5351         enabled_any arm aarch64 && enable_weak linux_perf
5352         ;;
5353     irix*)
5354         target_os=irix
5355         ranlib="echo ignoring ranlib"
5356         ;;
5357     os/2*)
5358         strip="lxlite -CS"
5359         striptype=""
5360         objformat="aout"
5361         add_cppflags -D_GNU_SOURCE
5362         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5363         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5364         LIBSUF="_s.a"
5365         SLIBPREF=""
5366         SLIBSUF=".dll"
5367         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5368         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5369         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5370             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5371             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5372             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5373             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5374         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5375             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5376         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5377         SLIB_INSTALL_LINKS=
5378         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5379         enable dos_paths
5380         enable_weak os2threads
5381         ;;
5382     gnu/kfreebsd)
5383         add_cppflags -D_BSD_SOURCE
5384         ;;
5385     gnu)
5386         ;;
5387     qnx)
5388         add_cppflags -D_QNX_SOURCE
5389         network_extralibs="-lsocket"
5390         ;;
5391     symbian)
5392         SLIBSUF=".dll"
5393         enable dos_paths
5394         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5395         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5396         add_ldflags -Wl,--target1-abs,--no-undefined \
5397                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5398                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5399         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5400                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5401                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5402         ;;
5403     minix)
5404         ;;
5405     none)
5406         ;;
5407     *)
5408         die "Unknown OS '$target_os'."
5409         ;;
5410 esac
5411
5412 # test if creating links works
5413 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5414 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5415 mkdir "$link_dest"
5416 $ln_s "$link_dest" "$link_name"
5417 touch "$link_dest/test_file"
5418 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5419     # create link to source path
5420     [ -e src ] && rm src
5421     $ln_s "$source_path" src
5422     source_link=src
5423 else
5424     # creating directory links doesn't work
5425     # fall back to using the full source path
5426     source_link="$source_path"
5427 fi
5428 # cleanup
5429 rm -r "$link_dest"
5430 rm -r "$link_name"
5431
5432 # determine libc flavour
5433
5434 probe_libc(){
5435     pfx=$1
5436     pfx_no_=${pfx%_}
5437     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5438     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5439         eval ${pfx}libc_type=uclibc
5440         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5441     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5442         eval ${pfx}libc_type=glibc
5443         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5444     # MinGW headers can be installed on Cygwin, so check for newlib first.
5445     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5446         eval ${pfx}libc_type=newlib
5447         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5448     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5449     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5450         eval ${pfx}libc_type=mingw64
5451         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5452             add_compat msvcrt/snprintf.o
5453             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5454         fi
5455         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5456         eval test \$${pfx_no_}cc_type = "gcc" &&
5457             add_${pfx}cppflags -D__printf__=__gnu_printf__
5458         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5459             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5460     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5461          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5462         eval ${pfx}libc_type=mingw32
5463         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5464             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5465             die "ERROR: MinGW32 runtime version must be >= 3.15."
5466         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5467         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5468             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5469         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5470             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5471         eval test \$${pfx_no_}cc_type = "gcc" &&
5472             add_${pfx}cppflags -D__printf__=__gnu_printf__
5473     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5474         eval ${pfx}libc_type=msvcrt
5475         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5476             if [ "$pfx" = host_ ]; then
5477                 add_host_cppflags -Dsnprintf=_snprintf
5478             else
5479                 add_compat strtod.o strtod=avpriv_strtod
5480                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5481                                              _snprintf=avpriv_snprintf  \
5482                                              vsnprintf=avpriv_vsnprintf
5483             fi
5484         fi
5485         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5486         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5487         # 0x601 by default unless something else is set by the user.
5488         # This can easily lead to us detecting functions only present
5489         # in such new versions and producing binaries requiring windows 7.0.
5490         # Therefore explicitly set the default to Vista unless the user has
5491         # set something else on the command line.
5492         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5493         # family. For these cases, configure is free to use any functions
5494         # found in the SDK headers by default. (Alternatively, we could force
5495         # _WIN32_WINNT to 0x0602 in that case.)
5496         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5497             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5498 #ifdef WINAPI_FAMILY
5499 #include <winapifamily.h>
5500 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5501 #error not desktop
5502 #endif
5503 #endif
5504 EOF
5505         if [ "$pfx" = "" ]; then
5506             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5507             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5508         fi
5509     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5510         eval ${pfx}libc_type=klibc
5511     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5512         eval ${pfx}libc_type=bionic
5513     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5514         eval ${pfx}libc_type=solaris
5515         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5516     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5517         eval ${pfx}libc_type=djgpp
5518         add_cppflags -U__STRICT_ANSI__
5519         add_cflags "-include $source_path/compat/djgpp/math.h"
5520         add_compat djgpp/math.o
5521     fi
5522     test_${pfx}cc <<EOF
5523 #include <time.h>
5524 void *v = localtime_r;
5525 EOF
5526 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5527 #include <time.h>
5528 void *v = localtime_r;
5529 EOF
5530
5531     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5532 }
5533
5534 probe_libc
5535 probe_libc host_
5536
5537 # hacks for compiler/libc/os combinations
5538
5539 case $libc_type in
5540     bionic)
5541         add_compat strtod.o strtod=avpriv_strtod
5542         ;;
5543 esac
5544
5545 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5546     add_cppflags '-I\$(SRC_PATH)/compat/float'
5547
5548 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5549
5550 set_default libdir
5551 : ${shlibdir_default:="$libdir"}
5552 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5553
5554 set_default $PATHS_LIST
5555 set_default nm
5556
5557 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5558
5559 enable_weak_pic() {
5560     disabled pic && return
5561     enable pic
5562     add_cppflags -DPIC
5563     case "$target_os" in
5564     mingw*|cygwin*|win*)
5565         ;;
5566     *)
5567         add_cflags -fPIC
5568         add_asflags -fPIC
5569         ;;
5570     esac
5571 }
5572
5573 enabled pic && enable_weak_pic
5574
5575 test_cc <<EOF || die "Symbol mangling check failed."
5576 int ff_extern;
5577 EOF
5578 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5579 extern_prefix=${sym%%ff_extern*}
5580
5581 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5582
5583 for restrict_keyword in restrict __restrict__ __restrict ""; do
5584     test_code cc "" "char * $restrict_keyword p" && break
5585 done
5586
5587 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5588
5589 # The global variable ensures the bits appear unchanged in the object file.
5590 test_cc <<EOF || die "endian test failed"
5591 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5592 EOF
5593 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5594
5595 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5596
5597 if ! enabled ppc64 || enabled bigendian; then
5598     disable vsx
5599 fi
5600
5601 check_gas() {
5602     log "check_gas using '$as' as AS"
5603     # :vararg is used on aarch64, arm and ppc altivec
5604     check_as vararg "
5605 .macro m n, y:vararg=0
5606 \n: .int \y
5607 .endm
5608 m x" || return 1
5609     # .altmacro is only used in arm asm
5610     ! enabled arm || check_as gnu_as ".altmacro"
5611 }
5612
5613 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5614     nogas=:
5615     enabled_any arm aarch64 && nogas=die
5616     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5617     as_noop=-v
5618
5619     case $as_type in
5620         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5621         gcc)  gaspp_as_type=gas ;;
5622         *)    gaspp_as_type=$as_type ;;
5623     esac
5624
5625     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5626
5627     test "${as#*gas-preprocessor.pl}" != "$as" ||
5628     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5629         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5630
5631     if ! check_gas ; then
5632         as=${gas:=$as}
5633         check_gas || \
5634             $nogas "GNU assembler not found, install/update gas-preprocessor"
5635     fi
5636
5637     check_as as_func ".func test
5638                       .endfunc"
5639 fi
5640
5641 check_inline_asm inline_asm_labels '"1:\n"'
5642
5643 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5644
5645 if enabled aarch64; then
5646     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5647     # internal assembler in clang 3.3 does not support this instruction
5648     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5649     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5650
5651     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5652
5653 elif enabled alpha; then
5654
5655     check_cflags -mieee
5656
5657 elif enabled arm; then
5658
5659     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5660     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5661 float func(float a, float b){ return a+b; }
5662 EOF
5663     enabled thumb && check_cflags -mthumb || check_cflags -marm
5664
5665     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5666         :
5667     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5668         :
5669     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5670         case "${cross_prefix:-$cc}" in
5671             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5672             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5673 __asm__ (".eabi_attribute 28, 1");
5674 int main(void) { return 0; }
5675 EOF
5676         esac
5677         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5678     fi
5679
5680     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5681     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5682     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5683     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5684     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5685     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5686     enabled setend  && check_insn setend  'setend be'
5687
5688     [ $target_os = linux ] || [ $target_os = android ] ||
5689         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5690             $ARCH_EXT_LIST_ARM
5691
5692     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5693
5694     check_as as_arch_directive ".arch armv7-a"
5695     check_as as_dn_directive   "ra .dn d0.i16"
5696     check_as as_fpu_directive  ".fpu neon"
5697
5698     # llvm's integrated assembler supports .object_arch from llvm 3.5
5699     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5700         check_as as_object_arch ".object_arch armv4"
5701
5702     # MS armasm fails to assemble our PIC constructs
5703     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5704
5705 elif enabled mips; then
5706
5707     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5708     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5709     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5710
5711     # Enable minimum ISA based on selected options
5712     if enabled mips64; then
5713         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5714         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5715         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5716     else
5717         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5718         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5719         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5720         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5721     fi
5722
5723     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5724     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5725     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_headers msa.h || disable msa
5726     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5727     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5728
5729     if enabled bigendian && enabled msa; then
5730         disable msa
5731     fi
5732
5733 elif enabled parisc; then
5734
5735     if enabled gcc; then
5736         case $($cc -dumpversion) in
5737             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5738         esac
5739     fi
5740
5741 elif enabled ppc; then
5742
5743     enable local_aligned
5744
5745     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5746     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5747     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5748     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5749
5750     if enabled altivec; then
5751         check_cflags -maltivec -mabi=altivec
5752
5753         # check if our compiler supports Motorola AltiVec C API
5754         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
5755                                     vector signed int v2 = (vector signed int) { 1 };
5756                                     v1 = vec_add(v1, v2);"
5757
5758         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5759     fi
5760
5761     if enabled vsx; then
5762         check_cflags -mvsx &&
5763         check_cc vsx altivec.h "int v[4] = { 0 };
5764                                 vector signed int v1 = vec_vsx_ld(0, v);"
5765     fi
5766
5767     if enabled power8; then
5768         check_cpp_condition power8 "altivec.h" "defined(_ARCH_PWR8)"
5769     fi
5770
5771 elif enabled x86; then
5772
5773     check_builtin rdtsc    intrin.h   "__rdtsc()"
5774     check_builtin mm_empty mmintrin.h "_mm_empty()"
5775
5776     enable local_aligned
5777
5778     # check whether EBP is available on x86
5779     # As 'i' is stored on the stack, this program will crash
5780     # if the base pointer is used to access it because the
5781     # base pointer is cleared in the inline assembly code.
5782     check_exec_crash <<EOF && enable ebp_available
5783 volatile int i=0;
5784 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5785 return i;
5786 EOF
5787
5788     # check whether EBX is available on x86
5789     check_inline_asm ebx_available '""::"b"(0)' &&
5790         check_inline_asm ebx_available '"":::"%ebx"'
5791
5792     # check whether xmm clobbers are supported
5793     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5794
5795     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5796         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5797
5798     # check whether binutils is new enough to compile SSSE3/MMXEXT
5799     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5800     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5801
5802     probe_x86asm(){
5803         x86asmexe_probe=$1
5804         if test_cmd $x86asmexe_probe -v; then
5805             x86asmexe=$x86asmexe_probe
5806             x86asm_type=nasm
5807             x86asm_debug="-g -F dwarf"
5808             X86ASMDEP=
5809             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5810         elif test_cmd $x86asmexe_probe --version; then
5811             x86asmexe=$x86asmexe_probe
5812             x86asm_type=yasm
5813             x86asm_debug="-g dwarf2"
5814             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5815             X86ASM_DEPFLAGS=
5816         fi
5817         check_x86asm x86asm "movbe ecx, [5]"
5818     }
5819
5820     if ! disabled_any asm mmx x86asm; then
5821         disable x86asm
5822         for program in $x86asmexe nasm yasm; do
5823             probe_x86asm $program && break
5824         done
5825         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5826         X86ASMFLAGS="-f $objformat"
5827         enabled pic               && append X86ASMFLAGS "-DPIC"
5828         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5829         case "$objformat" in
5830             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5831         esac
5832
5833         check_x86asm avx512_external "vmovdqa32 [eax]{k1}{z}, zmm0"
5834         check_x86asm avx2_external   "vextracti128 xmm0, ymm0, 0"
5835         check_x86asm xop_external    "vpmacsdd xmm0, xmm1, xmm2, xmm3"
5836         check_x86asm fma4_external   "vfmaddps ymm0, ymm1, ymm2, ymm3"
5837         check_x86asm cpunop          "CPU amdnop"
5838     fi
5839
5840     case "$cpu" in
5841         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5842             disable fast_clz
5843         ;;
5844     esac
5845
5846 fi
5847
5848 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
5849
5850 check_ldflags -Wl,--as-needed
5851 check_ldflags -Wl,-z,noexecstack
5852
5853 if ! disabled network; then
5854     check_func getaddrinfo $network_extralibs
5855     check_func inet_aton $network_extralibs
5856
5857     check_type netdb.h "struct addrinfo"
5858     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5859     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5860     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5861     check_type poll.h "struct pollfd"
5862     check_type netinet/sctp.h "struct sctp_event_subscribe"
5863     check_struct "sys/socket.h" "struct msghdr" msg_flags
5864     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5865     check_type netinet/in.h "struct sockaddr_in6"
5866     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5867     check_type "sys/types.h sys/socket.h" socklen_t
5868
5869     # Prefer arpa/inet.h over winsock2
5870     if check_headers arpa/inet.h ; then
5871         check_func closesocket
5872     elif check_headers winsock2.h ; then
5873         check_func_headers winsock2.h closesocket -lws2 &&
5874             network_extralibs="-lws2" ||
5875         { check_func_headers winsock2.h closesocket -lws2_32 &&
5876             network_extralibs="-lws2_32"; } || disable winsock2_h network
5877         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5878
5879         check_type ws2tcpip.h socklen_t
5880         check_type ws2tcpip.h "struct addrinfo"
5881         check_type ws2tcpip.h "struct group_source_req"
5882         check_type ws2tcpip.h "struct ip_mreq_source"
5883         check_type ws2tcpip.h "struct ipv6_mreq"
5884         check_type winsock2.h "struct pollfd"
5885         check_struct winsock2.h "struct sockaddr" sa_len
5886         check_type ws2tcpip.h "struct sockaddr_in6"
5887         check_type ws2tcpip.h "struct sockaddr_storage"
5888     else
5889         disable network
5890     fi
5891 fi
5892
5893 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5894 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5895 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5896 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5897 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5898 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5899 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5900
5901 case "$custom_allocator" in
5902     jemalloc)
5903         # jemalloc by default does not use a prefix
5904         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5905     ;;
5906     tcmalloc)
5907         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5908         malloc_prefix=tc_
5909     ;;
5910 esac
5911
5912 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5913 check_func  ${malloc_prefix}memalign            && enable memalign
5914 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5915
5916 check_func  access
5917 check_func_headers stdlib.h arc4random
5918 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5919 check_func  fcntl
5920 check_func  fork
5921 check_func  gethrtime
5922 check_func  getopt
5923 check_func  getrusage
5924 check_func  gettimeofday
5925 check_func  isatty
5926 check_func  mkstemp
5927 check_func  mmap
5928 check_func  mprotect
5929 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5930 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5931 check_func  sched_getaffinity
5932 check_func  setrlimit
5933 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5934 check_func  strerror_r
5935 check_func  sysconf
5936 check_func  sysctl
5937 check_func  usleep
5938
5939 check_func_headers conio.h kbhit
5940 check_func_headers io.h setmode
5941 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5942 check_func_headers mach/mach_time.h mach_absolute_time
5943 check_func_headers stdlib.h getenv
5944 check_func_headers sys/stat.h lstat
5945
5946 check_func_headers windows.h GetProcessAffinityMask
5947 check_func_headers windows.h GetProcessTimes
5948 check_func_headers windows.h GetSystemTimeAsFileTime
5949 check_func_headers windows.h LoadLibrary
5950 check_func_headers windows.h MapViewOfFile
5951 check_func_headers windows.h PeekNamedPipe
5952 check_func_headers windows.h SetConsoleTextAttribute
5953 check_func_headers windows.h SetConsoleCtrlHandler
5954 check_func_headers windows.h Sleep
5955 check_func_headers windows.h VirtualAlloc
5956 check_func_headers glob.h glob
5957 enabled xlib &&
5958     check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5959
5960 check_headers direct.h
5961 check_headers dirent.h
5962 check_headers dxgidebug.h
5963 check_headers dxva.h
5964 check_headers dxva2api.h -D_WIN32_WINNT=0x0600
5965 check_headers io.h
5966 check_headers linux/perf_event.h
5967 check_headers libcrystalhd/libcrystalhd_if.h
5968 check_headers malloc.h
5969 check_headers net/udplite.h
5970 check_headers poll.h
5971 check_headers sys/param.h
5972 check_headers sys/resource.h
5973 check_headers sys/select.h
5974 check_headers sys/time.h
5975 check_headers sys/un.h
5976 check_headers termios.h
5977 check_headers unistd.h
5978 check_headers valgrind/valgrind.h
5979 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5980 check_headers windows.h
5981 check_headers X11/extensions/XvMClib.h
5982 check_headers asm/types.h
5983
5984 # it seems there are versions of clang in some distros that try to use the
5985 # gcc headers, which explodes for stdatomic
5986 # so we also check that atomics actually work here
5987 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0); foo += bar"
5988
5989 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5990 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
5991     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
5992 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5993 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5994 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5995
5996 check_lib android android/native_window.h ANativeWindow_acquire -landroid
5997 check_lib mediandk "stdint.h media/NdkImage.h" AImage_delete -lmediandk
5998 check_lib camera2ndk "stdbool.h stdint.h camera/NdkCameraManager.h" ACameraManager_create -lcamera2ndk
5999
6000 enabled appkit       && check_apple_framework AppKit
6001 enabled audiotoolbox && check_apple_framework AudioToolbox
6002 enabled avfoundation && check_apple_framework AVFoundation
6003 enabled coreimage    && check_apple_framework CoreImage
6004 enabled videotoolbox && check_apple_framework VideoToolbox
6005
6006 check_apple_framework CoreFoundation
6007 check_apple_framework CoreMedia
6008 check_apple_framework CoreVideo
6009
6010 enabled avfoundation && {
6011     disable coregraphics applicationservices
6012     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
6013     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
6014
6015 enabled videotoolbox && {
6016     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
6017     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
6018     check_func_headers CoreVideo/CVPixelBuffer.h kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange "-framework CoreVideo"
6019 }
6020
6021 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
6022
6023 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6024 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
6025 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
6026 check_type "windows.h d3d11.h" "ID3D11VideoContext"
6027 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
6028
6029 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
6030
6031 if enabled cuda_sdk; then
6032     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
6033     enable cuda_nvcc
6034 fi
6035
6036 if ! disabled ffnvcodec; then
6037     ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
6038     check_pkg_config ffnvcodec "ffnvcodec >= 9.0.18.0" "$ffnv_hdr_list" "" || \
6039       check_pkg_config ffnvcodec "ffnvcodec >= 8.2.15.8 ffnvcodec < 8.3" "$ffnv_hdr_list" "" || \
6040       check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.9 ffnvcodec < 8.2" "$ffnv_hdr_list" "" || \
6041       check_pkg_config ffnvcodec "ffnvcodec >= 8.0.14.9 ffnvcodec < 8.1" "$ffnv_hdr_list" ""
6042 fi
6043
6044 check_cpp_condition winrt windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)"
6045
6046 if ! disabled w32threads && ! enabled pthreads; then
6047     check_func_headers "windows.h process.h" _beginthreadex &&
6048         check_type "windows.h" CONDITION_VARIABLE &&
6049         check_type "windows.h" INIT_ONCE &&
6050         enable w32threads || disable w32threads
6051     if ! enabled w32threads && enabled winrt; then
6052         check_func_headers "windows.h" CreateThread &&
6053             enable w32threads || disable w32threads
6054     fi
6055 fi
6056
6057 # check for some common methods of building with pthread support
6058 # do this before the optional library checks as some of them require pthreads
6059 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
6060     if check_lib pthreads pthread.h pthread_join   -pthread &&
6061        check_lib pthreads pthread.h pthread_create -pthread; then
6062         add_cflags -pthread
6063     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
6064          check_lib pthreads pthread.h pthread_create -pthreads; then
6065         add_cflags -pthreads
6066     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
6067          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
6068         add_cflags -ldl -pthread
6069     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
6070          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
6071         :
6072     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
6073          check_lib pthreads pthread.h pthread_create -lpthread; then
6074         :
6075     elif check_func pthread_join && check_func pthread_create; then
6076         enable pthreads
6077     fi
6078     check_cc pthreads "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER"
6079
6080     if enabled pthreads; then
6081         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
6082         check_func pthread_cancel $pthreads_extralibs
6083     fi
6084 fi
6085
6086 enabled  zlib && { check_pkg_config zlib zlib "zlib.h" zlibVersion ||
6087                    check_lib zlib   zlib.h      zlibVersion    -lz; }
6088 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
6089 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
6090
6091 # On some systems dynamic loading requires no extra linker flags
6092 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
6093
6094 check_lib libm math.h sin -lm
6095
6096 atan2f_args=2
6097 copysign_args=2
6098 hypot_args=2
6099 ldexpf_args=2
6100 powf_args=2
6101
6102 for func in $MATH_FUNCS; do
6103     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
6104 done
6105
6106 for func in $COMPLEX_FUNCS; do
6107     eval check_complexfunc $func \${${func}_args:-1}
6108 done
6109
6110 # these are off by default, so fail if requested and not available
6111 enabled cuda_nvcc         && { check_nvcc || die "ERROR: failed checking for nvcc."; }
6112 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
6113 enabled decklink          && { require_headers DeckLinkAPI.h &&
6114                                { test_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a090500" || die "ERROR: Decklink API version must be >= 10.9.5."; } }
6115 enabled frei0r            && require_headers "frei0r.h dlfcn.h"
6116 enabled gmp               && require gmp gmp.h mpz_export -lgmp
6117 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
6118 enabled jni               && { [ $target_os = "android" ] && check_headers jni.h && enabled pthreads || die "ERROR: jni not found"; }
6119 enabled ladspa            && require_headers "ladspa.h dlfcn.h"
6120 enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_codec.h aom_codec_version
6121 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
6122                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
6123                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
6124 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
6125 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
6126 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
6127 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
6128 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
6129 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
6130                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
6131                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
6132 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
6133 enabled libcodec2         && require libcodec2 codec2/codec2.h codec2_create -lcodec2
6134 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.2.1" "dav1d/dav1d.h" dav1d_version
6135 enabled libdavs2          && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
6136 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
6137 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
6138 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
6139                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
6140                                  warn "using libfdk without pkg-config"; } }
6141 flite_extralibs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
6142 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6143 enabled fontconfig        && enable libfontconfig
6144 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6145 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6146 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6147 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6148                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6149 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6150                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6151                                done || die "ERROR: libgsm not found"; }
6152 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6153 enabled libklvanc         && require libklvanc libklvanc/vanc.h klvanc_context_create -lklvanc
6154 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6155 enabled liblensfun        && require_pkg_config liblensfun lensfun lensfun.h lf_db_new
6156 # While it may appear that require is being used as a pkg-config
6157 # fallback for libmfx, it is actually being used to detect a different
6158 # installation route altogether.  If libmfx is installed via the Intel
6159 # Media SDK or Intel Media Server Studio, these don't come with
6160 # pkg-config support.  Instead, users should make sure that the build
6161 # can find the libraries and headers through other means.
6162 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6163                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
6164 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6165 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame $libm_extralibs
6166 enabled libmysofa         && { check_pkg_config libmysofa libmysofa mysofa.h mysofa_load ||
6167                                require libmysofa mysofa.h mysofa_load -lmysofa $zlib_extralibs; }
6168 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc -lnppidei ||
6169                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc -lnppidei ||
6170                                die "ERROR: libnpp not found"; }
6171 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6172 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6173 enabled libopencv         && { check_headers opencv2/core/core_c.h &&
6174                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6175                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6176                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6177 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6178 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6179                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6180 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6181 enabled libopus           && {
6182     enabled libopus_decoder && {
6183         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6184     }
6185     enabled libopus_encoder && {
6186         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6187     }
6188 }
6189 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6190 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6191 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6192 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6193 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6194 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6195                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6196 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6197 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6198 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6199 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
6200 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
6201 enabled libtensorflow     && require libtensorflow tensorflow/c/c_api.h TF_Version -ltensorflow
6202 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6203 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6204 enabled libtls            && require_pkg_config libtls libtls tls.h tls_configure
6205 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6206                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6207                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6208 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6209 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6210 enabled libvmaf           && require_pkg_config libvmaf "libvmaf >= 1.3.9" libvmaf.h compute_vmaf
6211 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6212 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6213                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6214
6215 enabled libvpx            && {
6216     enabled libvpx_vp8_decoder && {
6217         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6218             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp8_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6219     }
6220     enabled libvpx_vp8_encoder && {
6221         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6222             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp8_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6223     }
6224     enabled libvpx_vp9_decoder && {
6225         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6226             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6227     }
6228     enabled libvpx_vp9_encoder && {
6229         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6230             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
6231     }
6232     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6233         die "libvpx enabled but no supported decoders found"
6234     fi
6235 }
6236
6237 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6238 enabled libwebp           && {
6239     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6240     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6241 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6242                                { require libx264 "stdint.h x264.h" x264_encoder_encode "-lx264 $pthreads_extralibs $libm_extralibs" &&
6243                                  warn "using libx264 without pkg-config"; } } &&
6244                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
6245                              check_cpp_condition libx262 x264.h "X264_MPEG2"
6246 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6247                              require_cpp_condition libx265 x265.h "X265_BUILD >= 68"
6248 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6249 enabled libxavs2          && require_pkg_config libxavs2 "xavs2 >= 1.3.0" "stdint.h xavs2.h" xavs2_api_get
6250 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6251 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.7.0" zimg.h zimg_get_api_version
6252 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6253 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6254                              { test_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6255                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6256 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6257 enabled mbedtls           && { check_pkg_config mbedtls mbedtls mbedtls/x509_crt.h mbedtls_x509_crt_init ||
6258                                check_pkg_config mbedtls mbedtls mbedtls/ssl.h mbedtls_ssl_init ||
6259                                check_lib mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedx509 -lmbedcrypto ||
6260                                die "ERROR: mbedTLS not found"; }
6261 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6262 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6263                                { ! enabled cross_compile &&
6264                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6265                                  add_ldflags -L/opt/vc/lib/ &&
6266                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6267                                die "ERROR: mmal not found" &&
6268                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6269 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6270                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6271                                die "ERROR: openal not found"; } &&
6272                              { test_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6273                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6274 enabled opencl            && { check_pkg_config opencl OpenCL CL/cl.h clEnqueueNDRangeKernel ||
6275                                check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6276                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6277                                die "ERROR: opencl not found"; } &&
6278                              { test_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6279                                test_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6280                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6281 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6282                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6283                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6284                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6285                                die "ERROR: opengl not found."
6286                              }
6287 enabled omx               && require_headers OMX_Core.h
6288 enabled omx_rpi           && { check_headers OMX_Core.h ||
6289                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
6290                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6291 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6292                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6293                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6294                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6295                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6296                                die "ERROR: openssl not found"; }
6297 enabled rkmpp             && { require_pkg_config rkmpp rockchip_mpp  rockchip/rk_mpi.h mpp_create &&
6298                                require_pkg_config rockchip_mpp "rockchip_mpp >= 1.3.7" rockchip/rk_mpi.h mpp_create &&
6299                                { enabled libdrm ||
6300                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6301                              }
6302 enabled vapoursynth       && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
6303
6304
6305 if enabled gcrypt; then
6306     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6307     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6308         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6309         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6310         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6311             die "ERROR: gcrypt not found"
6312         add_cflags $gcrypt_cflags
6313     else
6314         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6315     fi
6316 fi
6317
6318 if enabled sdl2; then
6319     SDL2_CONFIG="${cross_prefix}sdl2-config"
6320     test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent
6321     if disabled sdl2 && "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6322         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6323         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6324         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6325         test_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6326         check_func_headers SDL_events.h SDL_PollEvent $sdl2_extralibs $sdl2_cflags &&
6327             enable sdl2
6328     fi
6329     if test $target_os = "mingw32"; then
6330         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6331     fi
6332 fi
6333
6334 if enabled decklink; then
6335     case $target_os in
6336         mingw32*|mingw64*|win32|win64)
6337             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6338             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6339             ;;
6340     esac
6341 fi
6342
6343 enabled securetransport &&
6344     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6345     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6346         disable securetransport
6347
6348 enabled securetransport &&
6349     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6350
6351 enabled schannel &&
6352     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6353     test_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6354     schannel_extralibs="-lsecur32" ||
6355         disable schannel
6356
6357 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6358 enabled makeinfo \
6359     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6360     && enable makeinfo_html || disable makeinfo_html
6361 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6362 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6363 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6364 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6365
6366 # check V4L2 codecs available in the API
6367 check_headers linux/fb.h
6368 check_headers linux/videodev2.h
6369 test_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6370 check_cc v4l2_m2m linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;"
6371 check_cc vc1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;"
6372 check_cc mpeg1_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;"
6373 check_cc mpeg2_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;"
6374 check_cc mpeg4_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;"
6375 check_cc hevc_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;"
6376 check_cc h263_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H263;"
6377 check_cc h264_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_H264;"
6378 check_cc vp8_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;"
6379 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
6380
6381 check_headers sys/videoio.h
6382 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6383
6384 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6385 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6386 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6387 # w32api 3.12 had it defined wrong
6388 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
6389
6390 check_type "dshow.h" IBaseFilter
6391
6392 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6393 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6394     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6395     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6396     check_headers "dev/ic/bt8xx.h"
6397
6398 if check_struct sys/soundcard.h audio_buf_info bytes; then
6399     enable_sanitized sys/soundcard.h
6400 else
6401     test_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6402     #include <sys/soundcard.h>
6403     audio_buf_info abc;
6404 EOF
6405 fi
6406
6407 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6408     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6409
6410 enabled libjack &&
6411     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6412
6413 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6414
6415 if enabled libcdio; then
6416     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6417     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6418     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6419     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6420     die "ERROR: No usable libcdio/cdparanoia found"
6421 fi
6422
6423 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6424     disable libxcb_shm libxcb_shape libxcb_xfixes
6425
6426 if enabled libxcb; then
6427     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6428     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6429     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6430 fi
6431
6432 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6433
6434 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6435 # the desktop api partition
6436 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6437 #ifdef WINAPI_FAMILY
6438 #include <winapifamily.h>
6439 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6440 #error desktop, not uwp
6441 #else
6442 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6443 #endif
6444 #else
6445 #error no family set
6446 #endif
6447 EOF
6448
6449 enabled vaapi &&
6450     check_pkg_config vaapi "libva >= 0.35.0" "va/va.h" vaInitialize
6451
6452 if enabled vaapi; then
6453     check_pkg_config vaapi_drm "libva-drm" "va/va_drm.h" vaGetDisplayDRM
6454
6455     if enabled xlib; then
6456         check_pkg_config vaapi_x11 "libva-x11" "va/va_x11.h" vaGetDisplay
6457     fi
6458
6459     check_cpp_condition vaapi_1 "va/va.h" "VA_CHECK_VERSION(1, 0, 0)"
6460
6461     check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
6462     check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
6463     check_struct "va/va.h va/va_vpp.h" "VAProcPipelineCaps" rotation_flags
6464     check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
6465     check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
6466     check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
6467     check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
6468 fi
6469
6470 if enabled_all opencl libdrm ; then
6471     check_type "CL/cl_intel.h" "clCreateImageFromFdINTEL_fn" &&
6472         enable opencl_drm_beignet
6473     check_func_headers "CL/cl_ext.h" clImportMemoryARM &&
6474         enable opencl_drm_arm
6475 fi
6476
6477 if enabled_all opencl vaapi ; then
6478     if enabled opencl_drm_beignet ; then
6479         enable opencl_vaapi_beignet
6480     else
6481         check_type "CL/cl.h CL/cl_va_api_media_sharing_intel.h" "clCreateFromVA_APIMediaSurfaceINTEL_fn" &&
6482             enable opencl_vaapi_intel_media
6483     fi
6484 fi
6485
6486 if enabled_all opencl dxva2 ; then
6487     check_type "CL/cl_dx9_media_sharing.h" cl_dx9_surface_info_khr &&
6488         enable opencl_dxva2
6489 fi
6490
6491 if enabled_all opencl d3d11va ; then
6492     check_type "CL/cl_d3d11.h" clGetDeviceIDsFromD3D11KHR_fn &&
6493         enable opencl_d3d11
6494 fi
6495
6496 enabled vdpau &&
6497     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
6498
6499 enabled vdpau &&
6500     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6501
6502 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6503
6504 if enabled x86; then
6505     case $target_os in
6506         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6507             ;;
6508         *)
6509             disable ffnvcodec cuvid nvdec nvenc
6510             ;;
6511     esac
6512 else
6513     disable ffnvcodec cuvid nvdec nvenc
6514 fi
6515
6516 enabled ffnvcodec && enable cuda
6517
6518 enabled nvenc &&
6519     test_cc -I$source_path <<EOF || disable nvenc
6520 #include <ffnvcodec/nvEncodeAPI.h>
6521 NV_ENCODE_API_FUNCTION_LIST flist;
6522 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6523 int main(void) { return 0; }
6524 EOF
6525
6526 enabled amf &&
6527     check_cpp_condition amf "AMF/core/Version.h" \
6528         "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
6529
6530 # Funny iconv installations are not unusual, so check it after all flags have been set
6531 if enabled libc_iconv; then
6532     check_func_headers iconv.h iconv
6533 elif enabled iconv; then
6534     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6535 fi
6536
6537 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6538
6539 # add some useful compiler flags if supported
6540 check_cflags -Wdeclaration-after-statement
6541 check_cflags -Wall
6542 check_cflags -Wdisabled-optimization
6543 check_cflags -Wpointer-arith
6544 check_cflags -Wredundant-decls
6545 check_cflags -Wwrite-strings
6546 check_cflags -Wtype-limits
6547 check_cflags -Wundef
6548 check_cflags -Wmissing-prototypes
6549 check_cflags -Wno-pointer-to-int-cast
6550 check_cflags -Wstrict-prototypes
6551 check_cflags -Wempty-body
6552
6553 if enabled extra_warnings; then
6554     check_cflags -Wcast-qual
6555     check_cflags -Wextra
6556     check_cflags -Wpedantic
6557 fi
6558
6559 check_disable_warning(){
6560     warning_flag=-W${1#-Wno-}
6561     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6562 }
6563
6564 test_cflags -Werror=unused-command-line-argument &&
6565     append unknown_warning_flags "-Werror=unused-command-line-argument"
6566 test_cflags -Werror=unknown-warning-option &&
6567     append unknown_warning_flags "-Werror=unknown-warning-option"
6568
6569 check_disable_warning -Wno-parentheses
6570 check_disable_warning -Wno-switch
6571 check_disable_warning -Wno-format-zero-length
6572 check_disable_warning -Wno-pointer-sign
6573 check_disable_warning -Wno-unused-const-variable
6574 check_disable_warning -Wno-bool-operation
6575 check_disable_warning -Wno-char-subscripts
6576
6577 check_disable_warning_headers(){
6578     warning_flag=-W${1#-Wno-}
6579     test_cflags $warning_flag && add_cflags_headers $1
6580 }
6581
6582 check_disable_warning_headers -Wno-deprecated-declarations
6583 check_disable_warning_headers -Wno-unused-variable
6584
6585 test_cc <<EOF && enable blocks_extension
6586 void (^block)(void);
6587 EOF
6588
6589 # add some linker flags
6590 check_ldflags -Wl,--warn-common
6591 check_ldflags -Wl,-rpath-link=:libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6592 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6593 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6594
6595 # add some strip flags
6596 check_stripflags -x
6597
6598 enabled neon_clobber_test &&
6599     check_ldflags -Wl,--wrap,avcodec_open2              \
6600                   -Wl,--wrap,avcodec_decode_audio4      \
6601                   -Wl,--wrap,avcodec_decode_video2      \
6602                   -Wl,--wrap,avcodec_decode_subtitle2   \
6603                   -Wl,--wrap,avcodec_encode_audio2      \
6604                   -Wl,--wrap,avcodec_encode_video2      \
6605                   -Wl,--wrap,avcodec_encode_subtitle    \
6606                   -Wl,--wrap,avcodec_send_packet        \
6607                   -Wl,--wrap,avcodec_receive_packet     \
6608                   -Wl,--wrap,avcodec_send_frame         \
6609                   -Wl,--wrap,avcodec_receive_frame      \
6610                   -Wl,--wrap,swr_convert                \
6611                   -Wl,--wrap,avresample_convert ||
6612     disable neon_clobber_test
6613
6614 enabled xmm_clobber_test &&
6615     check_ldflags -Wl,--wrap,avcodec_open2              \
6616                   -Wl,--wrap,avcodec_decode_audio4      \
6617                   -Wl,--wrap,avcodec_decode_video2      \
6618                   -Wl,--wrap,avcodec_decode_subtitle2   \
6619                   -Wl,--wrap,avcodec_encode_audio2      \
6620                   -Wl,--wrap,avcodec_encode_video2      \
6621                   -Wl,--wrap,avcodec_encode_subtitle    \
6622                   -Wl,--wrap,avcodec_send_packet        \
6623                   -Wl,--wrap,avcodec_receive_packet     \
6624                   -Wl,--wrap,avcodec_send_frame         \
6625                   -Wl,--wrap,avcodec_receive_frame      \
6626                   -Wl,--wrap,swr_convert                \
6627                   -Wl,--wrap,avresample_convert         \
6628                   -Wl,--wrap,sws_scale ||
6629     disable xmm_clobber_test
6630
6631 check_ld "cc" proper_dce <<EOF
6632 extern const int array[512];
6633 static inline int func(void) { return array[0]; }
6634 int main(void) { return 0; }
6635 EOF
6636
6637 if enabled proper_dce; then
6638     echo "X { local: *; };" > $TMPV
6639     if test_ldflags -Wl,${version_script},$TMPV; then
6640         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6641         quotes='""'
6642         test_cc <<EOF && enable symver_asm_label
6643 void ff_foo(void) __asm__ ("av_foo@VERSION");
6644 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6645 EOF
6646         test_cc <<EOF && enable symver_gnu_asm
6647 __asm__(".symver ff_foo,av_foo@VERSION");
6648 void ff_foo(void) {}
6649 EOF
6650     fi
6651 fi
6652
6653 if [ -z "$optflags" ]; then
6654     if enabled small; then
6655         optflags=$cflags_size
6656     elif enabled optimizations; then
6657         optflags=$cflags_speed
6658     else
6659         optflags=$cflags_noopt
6660     fi
6661 fi
6662
6663 if [ -z "$nvccflags" ]; then
6664     nvccflags=$nvccflags_default
6665 fi
6666
6667 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6668     nvccflags="$nvccflags -m64"
6669 else
6670     nvccflags="$nvccflags -m32"
6671 fi
6672
6673 check_optflags(){
6674     check_cflags "$@"
6675     enabled lto && check_ldflags "$@"
6676 }
6677
6678 check_optflags $optflags
6679 check_optflags -fno-math-errno
6680 check_optflags -fno-signed-zeros
6681
6682 if enabled lto; then
6683     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6684     check_cflags  -flto
6685     check_ldflags -flto $cpuflags
6686     disable inline_asm_direct_symbol_refs
6687 fi
6688
6689 enabled ftrapv && check_cflags -ftrapv
6690
6691 test_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6692 int x;
6693 EOF
6694
6695
6696 if enabled icc; then
6697     # Just warnings, no remarks
6698     check_cflags -w1
6699     # -wd: Disable following warnings
6700     # 144, 167, 556: -Wno-pointer-sign
6701     # 188: enumerated type mixed with another type
6702     # 1292: attribute "foo" ignored
6703     # 1419: external declaration in primary source file
6704     # 10006: ignoring unknown option -fno-signed-zeros
6705     # 10148: ignoring unknown option -Wno-parentheses
6706     # 10156: ignoring option '-W'; no argument required
6707     # 13200: No EMMS instruction before call to function
6708     # 13203: No EMMS instruction before return from function
6709     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6710     # 11030: Warning unknown option --as-needed
6711     # 10156: ignoring option '-export'; no argument required
6712     check_ldflags -wd10156,11030
6713     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6714     enable ebp_available
6715     # The test above does not test linking
6716     enabled lto && disable symver_asm_label
6717     if enabled x86_32; then
6718         icc_version=$($cc -dumpversion)
6719         test ${icc_version%%.*} -ge 11 &&
6720             check_cflags -falign-stack=maintain-16-byte ||
6721             disable aligned_stack
6722     fi
6723 elif enabled gcc; then
6724     check_optflags -fno-tree-vectorize
6725     check_cflags -Werror=format-security
6726     check_cflags -Werror=implicit-function-declaration
6727     check_cflags -Werror=missing-prototypes
6728     check_cflags -Werror=return-type
6729     check_cflags -Werror=vla
6730     check_cflags -Wformat
6731     check_cflags -fdiagnostics-color=auto
6732     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6733     if enabled x86_32; then
6734         case $target_os in
6735         *bsd*)
6736             # BSDs don't guarantee a 16 byte aligned stack, but we can
6737             # request GCC to try to maintain 16 byte alignment throughout
6738             # function calls. Library entry points that might call assembly
6739             # functions align the stack. (The parameter means 2^4 bytes.)
6740             check_cflags -mpreferred-stack-boundary=4
6741             ;;
6742         esac
6743     fi
6744 elif enabled llvm_gcc; then
6745     check_cflags -mllvm -stack-alignment=16
6746 elif enabled clang; then
6747     if enabled x86_32; then
6748         # Clang doesn't support maintaining alignment without assuming the
6749         # same alignment in every function. If 16 byte alignment would be
6750         # enabled, one would also have to either add attribute_align_arg on
6751         # every single entry point into the libraries or enable -mstackrealign
6752         # (doing stack realignment in every single function).
6753         case $target_os in
6754         mingw32|win32|*bsd*)
6755             disable aligned_stack
6756             ;;
6757         *)
6758             check_cflags -mllvm -stack-alignment=16
6759             check_cflags -mstack-alignment=16
6760             ;;
6761         esac
6762     else
6763         check_cflags -mllvm -stack-alignment=16
6764         check_cflags -mstack-alignment=16
6765     fi
6766     check_cflags -Qunused-arguments
6767     check_cflags -Werror=implicit-function-declaration
6768     check_cflags -Werror=missing-prototypes
6769     check_cflags -Werror=return-type
6770 elif enabled cparser; then
6771     add_cflags -Wno-missing-variable-declarations
6772     add_cflags -Wno-empty-statement
6773 elif enabled armcc; then
6774     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6775     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6776     # 2523: use of inline assembly is deprecated
6777     add_cflags -W${armcc_opt},--diag_suppress=2523
6778     add_cflags -W${armcc_opt},--diag_suppress=1207
6779     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6780     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6781     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6782     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6783 elif enabled pathscale; then
6784     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6785     disable inline_asm
6786 elif enabled_any msvc icl; then
6787     enabled x86_32 && disable aligned_stack
6788     enabled_all x86_32 debug && add_cflags -Oy-
6789     enabled debug && add_ldflags -debug
6790     enable pragma_deprecated
6791     if enabled icl; then
6792         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6793         # (correctly) on icl 13.x.
6794         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6795             add_cflags -Qansi-alias
6796         # Some inline asm is not compilable in debug
6797         if enabled debug; then
6798             disable ebp_available
6799             disable ebx_available
6800         fi
6801     fi
6802     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6803     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
6804     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6805     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6806     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6807     # MSVC 2013 and newer can handle it fine.
6808     # If this declspec fails, force including stdlib.h before the restrict redefinition
6809     # happens in config.h.
6810     if [ $restrict_keyword != restrict ]; then
6811         test_cc <<EOF || add_cflags -FIstdlib.h
6812 __declspec($restrict_keyword) void *foo(int);
6813 EOF
6814     fi
6815     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6816     # Issue has been fixed in MSVC v19.00.24218.
6817     test_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6818         check_cflags -d2SSAOptimizer-
6819     # enable utf-8 source processing on VS2015 U2 and newer
6820     test_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6821         add_cflags -utf-8
6822 fi
6823
6824 for pfx in "" host_; do
6825     varname=${pfx%_}cc_type
6826     eval "type=\$$varname"
6827     if [ "$type" = "msvc" ]; then
6828         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6829 static inline int foo(int a) { return a; }
6830 EOF
6831     fi
6832 done
6833
6834 case $as_type in
6835     clang)
6836         add_asflags -Qunused-arguments
6837     ;;
6838 esac
6839
6840 case $ld_type in
6841     clang)
6842         check_ldflags -Qunused-arguments
6843     ;;
6844 esac
6845
6846 enable frame_thread_encoder
6847
6848 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6849
6850 check_deps $CONFIG_LIST       \
6851            $CONFIG_EXTRA      \
6852            $HAVE_LIST         \
6853            $ALL_COMPONENTS    \
6854
6855 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
6856 enabled avresample && warn "Building with deprecated library libavresample"
6857
6858 case $target_os in
6859 haiku)
6860     disable memalign
6861     disable posix_memalign
6862     ;;
6863 *-dos|freedos|opendos)
6864     if test_cpp_condition sys/version.h "defined(__DJGPP__) && __DJGPP__ == 2 && __DJGPP_MINOR__ == 5"; then
6865         disable memalign
6866     fi
6867     ;;
6868 esac
6869
6870 flatten_extralibs(){
6871     nested_entries=
6872     list_name=$1
6873     eval list=\$${1}
6874     for entry in $list; do
6875         entry_copy=$entry
6876         resolve entry_copy
6877         flat_entries=
6878         for e in $entry_copy; do
6879             case $e in
6880                 *_extralibs) nested_entries="$nested_entries$e ";;
6881                           *) flat_entries="$flat_entries$e ";;
6882             esac
6883         done
6884         eval $entry="\$flat_entries"
6885     done
6886     append $list_name "$nested_entries"
6887
6888     resolve nested_entries
6889     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6890         flatten_extralibs $list_name
6891     fi
6892 }
6893
6894 flatten_extralibs_wrapper(){
6895     list_name=$1
6896     flatten_extralibs $list_name
6897     unique $list_name
6898     resolve $list_name
6899     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6900     eval printf \''%s'\' \""\$$list_name"\"
6901 }
6902
6903 for linkunit in $LIBRARY_LIST; do
6904     unset current_extralibs
6905     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6906     for comp in ${components}; do
6907         enabled $comp || continue
6908         comp_extralibs="${comp}_extralibs"
6909         append current_extralibs $comp_extralibs
6910     done
6911     eval prepend ${linkunit}_extralibs $current_extralibs
6912 done
6913
6914 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6915     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6916 done
6917
6918 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6919
6920 for thread in $THREADS_LIST; do
6921     if enabled $thread; then
6922         test -n "$thread_type" &&
6923             die "ERROR: Only one thread type must be selected." ||
6924             thread_type="$thread"
6925     fi
6926 done
6927
6928 if disabled stdatomic; then
6929     if enabled atomics_gcc; then
6930         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6931     elif enabled atomics_win32; then
6932         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6933     elif enabled atomics_suncc; then
6934         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6935     elif enabled pthreads; then
6936         add_compat atomics/pthread/stdatomic.o
6937         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6938     else
6939         enabled threads && die "Threading is enabled, but no atomics are available"
6940         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6941     fi
6942 fi
6943
6944 # Check if requested libraries were found.
6945 for lib in $AUTODETECT_LIBS; do
6946     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6947 done
6948
6949 enabled zlib && add_cppflags -DZLIB_CONST
6950
6951 # conditional library dependencies, in any order
6952 enabled afftdn_filter       && prepend avfilter_deps "avcodec"
6953 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6954 enabled afir_filter         && prepend avfilter_deps "avcodec"
6955 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6956 enabled aresample_filter    && prepend avfilter_deps "swresample"
6957 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6958 enabled bm3d_filter         && prepend avfilter_deps "avcodec"
6959 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6960 enabled convolve_filter     && prepend avfilter_deps "avcodec"
6961 enabled deconvolve_filter   && prepend avfilter_deps "avcodec"
6962 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6963 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6964 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6965 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6966 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6967 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6968 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6969 enabled pan_filter          && prepend avfilter_deps "swresample"
6970 enabled pp_filter           && prepend avfilter_deps "postproc"
6971 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6972 enabled resample_filter && prepend avfilter_deps "avresample"
6973 enabled sab_filter          && prepend avfilter_deps "swscale"
6974 enabled scale_filter    && prepend avfilter_deps "swscale"
6975 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6976 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6977 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6978 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6979 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6980 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6981 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6982 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6983 enabled spp_filter          && prepend avfilter_deps "avcodec"
6984 enabled sr_filter           && prepend avfilter_deps "avformat swscale"
6985 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6986 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6987 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6988
6989 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6990
6991 #FIXME
6992 enabled_any sdl2_outdev opengl_outdev && enabled sdl2 &&
6993     add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6994
6995 enabled opus_decoder    && prepend avcodec_deps "swresample"
6996
6997 # reorder the items at var $1 to align with the items order at var $2 .
6998 # die if an item at $1 is not at $2 .
6999 reorder_by(){
7000     eval rb_in=\$$1
7001     eval rb_ordered=\$$2
7002
7003     for rb in $rb_in; do
7004         is_in $rb $rb_ordered || die "$rb at \$$1 is not at \$$2"
7005     done
7006
7007     rb_out=
7008     for rb in $rb_ordered; do
7009         is_in $rb $rb_in && rb_out="$rb_out$rb "
7010     done
7011     eval $1=\$rb_out
7012 }
7013
7014 # deps-expand fflib $1:  N x {append all expanded deps; unique}
7015 # within a set of N items, N expansions are enough to expose a cycle.
7016 expand_deps(){
7017     unique ${1}_deps  # required for the early break test.
7018     for dummy in $LIBRARY_LIST; do  # N iteratios
7019         eval deps=\$${1}_deps
7020         append ${1}_deps $(map 'eval echo \$${v}_deps' $deps)
7021         unique ${1}_deps
7022         eval '[ ${#deps} = ${#'${1}_deps'} ]' && break  # doesn't expand anymore
7023     done
7024
7025     eval is_in $1 \$${1}_deps && die "Dependency cycle at ${1}_deps"
7026     reorder_by ${1}_deps LIBRARY_LIST  # linking order is expected later
7027 }
7028
7029 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
7030 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
7031
7032 map 'expand_deps $v' $LIBRARY_LIST
7033
7034 if test "$quiet" != "yes"; then
7035
7036 echo "install prefix            $prefix"
7037 echo "source path               $source_path"
7038 echo "C compiler                $cc"
7039 echo "C library                 $libc_type"
7040 if test "$host_cc" != "$cc"; then
7041     echo "host C compiler           $host_cc"
7042     echo "host C library            $host_libc_type"
7043 fi
7044 echo "ARCH                      $arch ($cpu)"
7045 if test "$build_suffix" != ""; then
7046     echo "build suffix              $build_suffix"
7047 fi
7048 if test "$progs_suffix" != ""; then
7049     echo "progs suffix              $progs_suffix"
7050 fi
7051 if test "$extra_version" != ""; then
7052     echo "version string suffix     $extra_version"
7053 fi
7054 echo "big-endian                ${bigendian-no}"
7055 echo "runtime cpu detection     ${runtime_cpudetect-no}"
7056 if enabled x86; then
7057     echo "standalone assembly       ${x86asm-no}"
7058     echo "x86 assembler             ${x86asmexe}"
7059     echo "MMX enabled               ${mmx-no}"
7060     echo "MMXEXT enabled            ${mmxext-no}"
7061     echo "3DNow! enabled            ${amd3dnow-no}"
7062     echo "3DNow! extended enabled   ${amd3dnowext-no}"
7063     echo "SSE enabled               ${sse-no}"
7064     echo "SSSE3 enabled             ${ssse3-no}"
7065     echo "AESNI enabled             ${aesni-no}"
7066     echo "AVX enabled               ${avx-no}"
7067     echo "AVX2 enabled              ${avx2-no}"
7068     echo "AVX-512 enabled           ${avx512-no}"
7069     echo "XOP enabled               ${xop-no}"
7070     echo "FMA3 enabled              ${fma3-no}"
7071     echo "FMA4 enabled              ${fma4-no}"
7072     echo "i686 features enabled     ${i686-no}"
7073     echo "CMOV is fast              ${fast_cmov-no}"
7074     echo "EBX available             ${ebx_available-no}"
7075     echo "EBP available             ${ebp_available-no}"
7076 fi
7077 if enabled aarch64; then
7078     echo "NEON enabled              ${neon-no}"
7079     echo "VFP enabled               ${vfp-no}"
7080 fi
7081 if enabled arm; then
7082     echo "ARMv5TE enabled           ${armv5te-no}"
7083     echo "ARMv6 enabled             ${armv6-no}"
7084     echo "ARMv6T2 enabled           ${armv6t2-no}"
7085     echo "VFP enabled               ${vfp-no}"
7086     echo "NEON enabled              ${neon-no}"
7087     echo "THUMB enabled             ${thumb-no}"
7088 fi
7089 if enabled mips; then
7090     echo "MIPS FPU enabled          ${mipsfpu-no}"
7091     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
7092     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
7093     echo "MIPS MSA enabled          ${msa-no}"
7094     echo "LOONGSON MMI enabled      ${mmi-no}"
7095 fi
7096 if enabled ppc; then
7097     echo "AltiVec enabled           ${altivec-no}"
7098     echo "VSX enabled               ${vsx-no}"
7099     echo "POWER8 enabled            ${power8-no}"
7100     echo "PPC 4xx optimizations     ${ppc4xx-no}"
7101     echo "dcbzl available           ${dcbzl-no}"
7102 fi
7103 echo "debug symbols             ${debug-no}"
7104 echo "strip symbols             ${stripping-no}"
7105 echo "optimize for size         ${small-no}"
7106 echo "optimizations             ${optimizations-no}"
7107 echo "static                    ${static-no}"
7108 echo "shared                    ${shared-no}"
7109 echo "postprocessing support    ${postproc-no}"
7110 echo "network support           ${network-no}"
7111 echo "threading support         ${thread_type-no}"
7112 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
7113 echo "texi2html enabled         ${texi2html-no}"
7114 echo "perl enabled              ${perl-no}"
7115 echo "pod2man enabled           ${pod2man-no}"
7116 echo "makeinfo enabled          ${makeinfo-no}"
7117 echo "makeinfo supports HTML    ${makeinfo_html-no}"
7118 test -n "$random_seed" &&
7119     echo "random seed               ${random_seed}"
7120 echo
7121
7122 echo "External libraries:"
7123 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
7124 echo
7125
7126 echo "External libraries providing hardware acceleration:"
7127 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
7128 echo
7129
7130 echo "Libraries:"
7131 print_enabled '' $LIBRARY_LIST | print_in_columns
7132 echo
7133
7134 echo "Programs:"
7135 print_enabled '' $PROGRAM_LIST | print_in_columns
7136 echo
7137
7138 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
7139     echo "Enabled ${type}s:"
7140     eval list=\$$(toupper $type)_LIST
7141     print_enabled '_*' $list | print_in_columns
7142     echo
7143 done
7144
7145 if test -n "$ignore_tests"; then
7146     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
7147     echo "Ignored FATE tests:"
7148     echo $ignore_tests | print_in_columns
7149     echo
7150 fi
7151
7152 echo "License: $license"
7153
7154 fi # test "$quiet" != "yes"
7155
7156 if test -n "$WARN_IF_GETS_DISABLED_LIST"; then
7157     for cfg in $WARN_IF_GETS_DISABLED_LIST; do
7158         if disabled $cfg; then
7159             varname=${cfg}_disable_reason
7160             eval "warn \"Disabled $cfg because \$$varname\""
7161         fi
7162     done
7163 fi
7164
7165 if test -n "$WARNINGS"; then
7166     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7167     enabled fatal_warnings && exit 1
7168 fi
7169
7170 test -e Makefile || echo "include $source_path/Makefile" > Makefile
7171
7172 esc(){
7173     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
7174 }
7175
7176 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
7177
7178 enabled stripping || strip="echo skipping strip"
7179 enabled stripping || striptype=""
7180
7181 config_files="$TMPH ffbuild/config.mak doc/config.texi"
7182
7183 cat > ffbuild/config.mak <<EOF
7184 # Automatically generated by configure - do not modify!
7185 ifndef FFMPEG_CONFIG_MAK
7186 FFMPEG_CONFIG_MAK=1
7187 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
7188 prefix=$prefix
7189 LIBDIR=\$(DESTDIR)$libdir
7190 SHLIBDIR=\$(DESTDIR)$shlibdir
7191 INCDIR=\$(DESTDIR)$incdir
7192 BINDIR=\$(DESTDIR)$bindir
7193 DATADIR=\$(DESTDIR)$datadir
7194 DOCDIR=\$(DESTDIR)$docdir
7195 MANDIR=\$(DESTDIR)$mandir
7196 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
7197 INSTALL_NAME_DIR=$install_name_dir
7198 SRC_PATH=$source_path
7199 SRC_LINK=$source_link
7200 ifndef MAIN_MAKEFILE
7201 SRC_PATH:=\$(SRC_PATH:.%=..%)
7202 endif
7203 CC_IDENT=$cc_ident
7204 ARCH=$arch
7205 INTRINSICS=$intrinsics
7206 EXTERN_PREFIX=$extern_prefix
7207 CC=$cc
7208 CXX=$cxx
7209 AS=$as
7210 OBJCC=$objcc
7211 LD=$ld
7212 DEPCC=$dep_cc
7213 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
7214 DEPAS=$as
7215 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
7216 X86ASM=$x86asmexe
7217 DEPX86ASM=$x86asmexe
7218 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
7219 AR=$ar
7220 ARFLAGS=$arflags
7221 AR_O=$ar_o
7222 AR_CMD=$ar
7223 NM_CMD=$nm
7224 RANLIB=$ranlib
7225 STRIP=$strip
7226 STRIPTYPE=$striptype
7227 NVCC=$nvcc
7228 CP=cp -p
7229 LN_S=$ln_s
7230 CPPFLAGS=$CPPFLAGS
7231 CFLAGS=$CFLAGS
7232 CXXFLAGS=$CXXFLAGS
7233 OBJCFLAGS=$OBJCFLAGS
7234 ASFLAGS=$ASFLAGS
7235 NVCCFLAGS=$nvccflags
7236 AS_C=$AS_C
7237 AS_O=$AS_O
7238 OBJCC_C=$OBJCC_C
7239 OBJCC_E=$OBJCC_E
7240 OBJCC_O=$OBJCC_O
7241 CC_C=$CC_C
7242 CC_E=$CC_E
7243 CC_O=$CC_O
7244 CXX_C=$CXX_C
7245 CXX_O=$CXX_O
7246 NVCC_C=$NVCC_C
7247 NVCC_O=$NVCC_O
7248 LD_O=$LD_O
7249 X86ASM_O=$X86ASM_O
7250 LD_LIB=$LD_LIB
7251 LD_PATH=$LD_PATH
7252 DLLTOOL=$dlltool
7253 WINDRES=$windres
7254 DEPWINDRES=$dep_cc
7255 DOXYGEN=$doxygen
7256 LDFLAGS=$LDFLAGS
7257 LDEXEFLAGS=$LDEXEFLAGS
7258 LDSOFLAGS=$LDSOFLAGS
7259 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7260 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7261 X86ASMFLAGS=$X86ASMFLAGS
7262 BUILDSUF=$build_suffix
7263 PROGSSUF=$progs_suffix
7264 FULLNAME=$FULLNAME
7265 LIBPREF=$LIBPREF
7266 LIBSUF=$LIBSUF
7267 LIBNAME=$LIBNAME
7268 SLIBPREF=$SLIBPREF
7269 SLIBSUF=$SLIBSUF
7270 EXESUF=$EXESUF
7271 EXTRA_VERSION=$extra_version
7272 CCDEP=$CCDEP
7273 CXXDEP=$CXXDEP
7274 CCDEP_FLAGS=$CCDEP_FLAGS
7275 ASDEP=$ASDEP
7276 ASDEP_FLAGS=$ASDEP_FLAGS
7277 X86ASMDEP=$X86ASMDEP
7278 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7279 CC_DEPFLAGS=$CC_DEPFLAGS
7280 AS_DEPFLAGS=$AS_DEPFLAGS
7281 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7282 HOSTCC=$host_cc
7283 HOSTLD=$host_ld
7284 HOSTCFLAGS=$host_cflags
7285 HOSTCPPFLAGS=$host_cppflags
7286 HOSTEXESUF=$HOSTEXESUF
7287 HOSTLDFLAGS=$host_ldflags
7288 HOSTEXTRALIBS=$host_extralibs
7289 DEPHOSTCC=$host_cc
7290 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7291 HOSTCCDEP=$HOSTCCDEP
7292 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7293 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7294 HOSTCC_C=$HOSTCC_C
7295 HOSTCC_O=$HOSTCC_O
7296 HOSTLD_O=$HOSTLD_O
7297 TARGET_EXEC=$target_exec $target_exec_args
7298 TARGET_PATH=$target_path
7299 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7300 CFLAGS-ffplay=${sdl2_cflags}
7301 CFLAGS_HEADERS=$CFLAGS_HEADERS
7302 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7303 EXTRALIBS=$extralibs
7304 COMPAT_OBJS=$compat_objs
7305 INSTALL=$install
7306 LIBTARGET=${LIBTARGET}
7307 SLIBNAME=${SLIBNAME}
7308 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7309 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7310 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7311 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7312 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7313 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7314 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7315 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7316 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7317 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7318 NOREDZONE_FLAGS=$noredzone_flags
7319 LIBFUZZER_PATH=$libfuzzer_path
7320 IGNORE_TESTS=$ignore_tests
7321 EOF
7322
7323 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7324
7325 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7326     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7327 done
7328
7329 cat > $TMPH <<EOF
7330 /* Automatically generated by configure - do not modify! */
7331 #ifndef FFMPEG_CONFIG_H
7332 #define FFMPEG_CONFIG_H
7333 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7334 #define FFMPEG_LICENSE "$(c_escape $license)"
7335 #define CONFIG_THIS_YEAR 2019
7336 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7337 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7338 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7339 #define av_restrict $restrict_keyword
7340 #define EXTERN_PREFIX "${extern_prefix}"
7341 #define EXTERN_ASM ${extern_prefix}
7342 #define BUILDSUF "$build_suffix"
7343 #define SLIBSUF "$SLIBSUF"
7344 #define HAVE_MMX2 HAVE_MMXEXT
7345 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7346 EOF
7347
7348 test -n "$assert_level" &&
7349     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7350
7351 test -n "$malloc_prefix" &&
7352     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7353
7354 if enabled x86asm; then
7355     append config_files $TMPASM
7356     cat > $TMPASM <<EOF
7357 ; Automatically generated by configure - do not modify!
7358 EOF
7359 fi
7360
7361 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7362
7363
7364 mkdir -p doc
7365 mkdir -p tests
7366 mkdir -p tests/api
7367 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7368
7369 print_config ARCH_   "$config_files" $ARCH_LIST
7370 print_config HAVE_   "$config_files" $HAVE_LIST
7371 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7372                                      $CONFIG_EXTRA      \
7373                                      $ALL_COMPONENTS    \
7374
7375 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7376 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7377
7378 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7379 cp_if_changed $TMPH config.h
7380 touch ffbuild/.config
7381
7382 enabled x86asm && cp_if_changed $TMPASM config.asm
7383
7384 cat > $TMPH <<EOF
7385 /* Generated by ffmpeg configure */
7386 #ifndef AVUTIL_AVCONFIG_H
7387 #define AVUTIL_AVCONFIG_H
7388 EOF
7389
7390 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7391
7392 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7393
7394 cp_if_changed $TMPH libavutil/avconfig.h
7395
7396 # full_filter_name_foo=vf_foo
7397 # full_filter_name_bar=asrc_bar
7398 # ...
7399 eval "$(sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(.*\);/full_filter_name_\2=\1_\2/p" $source_path/libavfilter/allfilters.c)"
7400
7401 # generate the lists of enabled components
7402 print_enabled_components(){
7403     file=$1
7404     struct_name=$2
7405     name=$3
7406     shift 3
7407     echo "static const $struct_name * const $name[] = {" > $TMPH
7408     for c in $*; do
7409         if enabled $c; then
7410             case $name in
7411                 filter_list)
7412                     eval c=\$full_filter_name_${c%_filter}
7413                 ;;
7414                 indev_list)
7415                     c=${c%_indev}_demuxer
7416                 ;;
7417                 outdev_list)
7418                     c=${c%_outdev}_muxer
7419                 ;;
7420             esac
7421             printf "    &ff_%s,\n" $c >> $TMPH
7422         fi
7423     done
7424     if [ "$name" = "filter_list" ]; then
7425         for c in asrc_abuffer vsrc_buffer asink_abuffer vsink_buffer; do
7426             printf "    &ff_%s,\n" $c >> $TMPH
7427         done
7428     fi
7429     echo "    NULL };" >> $TMPH
7430     cp_if_changed $TMPH $file
7431 }
7432
7433 print_enabled_components libavfilter/filter_list.c AVFilter filter_list $FILTER_LIST
7434 print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
7435 print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
7436 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7437 print_enabled_components libavformat/demuxer_list.c AVInputFormat demuxer_list $DEMUXER_LIST
7438 print_enabled_components libavformat/muxer_list.c AVOutputFormat muxer_list $MUXER_LIST
7439 print_enabled_components libavdevice/indev_list.c AVInputFormat indev_list $INDEV_LIST
7440 print_enabled_components libavdevice/outdev_list.c AVOutputFormat outdev_list $OUTDEV_LIST
7441 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7442
7443 # Settings for pkg-config files
7444
7445 cat > $TMPH <<EOF
7446 # Automatically generated by configure - do not modify!
7447 shared=$shared
7448 build_suffix=$build_suffix
7449 prefix=$prefix
7450 libdir=$libdir
7451 incdir=$incdir
7452 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7453 source_path=${source_path}
7454 LIBPREF=${LIBPREF}
7455 LIBSUF=${LIBSUF}
7456 extralibs_avutil="$avutil_extralibs"
7457 extralibs_avcodec="$avcodec_extralibs"
7458 extralibs_avformat="$avformat_extralibs"
7459 extralibs_avdevice="$avdevice_extralibs"
7460 extralibs_avfilter="$avfilter_extralibs"
7461 extralibs_avresample="$avresample_extralibs"
7462 extralibs_postproc="$postproc_extralibs"
7463 extralibs_swscale="$swscale_extralibs"
7464 extralibs_swresample="$swresample_extralibs"
7465 EOF
7466
7467 for lib in $LIBRARY_LIST; do
7468     lib_deps="$(eval echo \$${lib}_deps)"
7469     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7470 done
7471
7472 cp_if_changed $TMPH ffbuild/config.sh