git.sesse.net Git - ffmpeg/blob - 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   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --enable-jni             enable JNI support [no]
 221   --enable-ladspa          enable LADSPA audio filtering [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-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --disable-lzma           disable lzma [autodetect]
 287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 289   --enable-mediacodec      enable Android MediaCodec support [no]
 290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 291   --enable-openal          enable OpenAL 1.1 capture support [no]
 292   --enable-opencl          enable OpenCL code
 293   --enable-opengl          enable OpenGL rendering [no]
 294   --enable-openssl         enable openssl, needed for https support
 295                            if gnutls is not used [no]
 296   --disable-sndio          disable sndio support [autodetect]
 297   --disable-schannel       disable SChannel SSP, needed for TLS support on
 298                            Windows if openssl and gnutls are not used [autodetect]
 299   --disable-sdl2           disable sdl2 [autodetect]
 300   --disable-securetransport disable Secure Transport, needed for TLS support
 301                            on OSX if openssl and gnutls are not used [autodetect]
 302   --disable-xlib           disable xlib [autodetect]
 303   --disable-zlib           disable zlib [autodetect]
 304
 305   The following libraries provide various hardware acceleration features:
 306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 312   --enable-libdrm          enable DRM code (Linux) [no]
 313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 316   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 317   --enable-omx             enable OpenMAX IL code [no]
 318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 319   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 320   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 321   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 322   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 323
 324 Toolchain options:
 325   --arch=ARCH              select architecture [$arch]
 326   --cpu=CPU                select the minimum required CPU (affects
 327                            instruction selection, may crash on older CPUs)
 328   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 329   --progs-suffix=SUFFIX    program name suffix []
 330   --enable-cross-compile   assume a cross-compiler is used
 331   --sysroot=PATH           root of cross-build tree
 332   --sysinclude=PATH        location of cross-build system headers
 333   --target-os=OS           compiler targets OS [$target_os]
 334   --target-exec=CMD        command to run executables on target
 335   --target-path=DIR        path to view of build directory on target
 336   --target-samples=DIR     path to samples directory on target
 337   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 338   --toolchain=NAME         set tool defaults according to NAME
 339   --nm=NM                  use nm tool NM [$nm_default]
 340   --ar=AR                  use archive tool AR [$ar_default]
 341   --as=AS                  use assembler AS [$as_default]
 342   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 343   --strip=STRIP            use strip tool STRIP [$strip_default]
 344   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 345   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 346   --cc=CC                  use C compiler CC [$cc_default]
 347   --cxx=CXX                use C compiler CXX [$cxx_default]
 348   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 349   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 350   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 351   --ld=LD                  use linker LD [$ld_default]
 352   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 353   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 354   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 355   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 356   --host-cc=HOSTCC         use host C compiler HOSTCC
 357   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 358   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 359   --host-ld=HOSTLD         use host linker HOSTLD
 360   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 361   --host-libs=HLIBS        use libs HLIBS when linking for host
 362   --host-os=OS             compiler host OS [$target_os]
 363   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 364   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 365   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 366   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 367   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 368   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 369   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 370   --extra-version=STRING   version string suffix []
 371   --optflags=OPTFLAGS      override optimization-related compiler flags
 372   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 373   --build-suffix=SUFFIX    library name suffix []
 374   --enable-pic             build position-independent code
 375   --enable-thumb           compile for Thumb instruction set
 376   --enable-lto             use link-time optimization
 377   --env="ENV=override"     override the environment variables
 378
 379 Advanced options (experts only):
 380   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 381   --custom-allocator=NAME  use a supported custom allocator
 382   --disable-symver         disable symbol versioning
 383   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 384   --disable-safe-bitstream-reader
 385                            disable buffer boundary checking in bitreaders
 386                            (faster, but may crash)
 387   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 388
 389 Optimization options (experts only):
 390   --disable-asm            disable all assembly optimizations
 391   --disable-altivec        disable AltiVec optimizations
 392   --disable-vsx            disable VSX optimizations
 393   --disable-power8         disable POWER8 optimizations
 394   --disable-amd3dnow       disable 3DNow! optimizations
 395   --disable-amd3dnowext    disable 3DNow! extended optimizations
 396   --disable-mmx            disable MMX optimizations
 397   --disable-mmxext         disable MMXEXT optimizations
 398   --disable-sse            disable SSE optimizations
 399   --disable-sse2           disable SSE2 optimizations
 400   --disable-sse3           disable SSE3 optimizations
 401   --disable-ssse3          disable SSSE3 optimizations
 402   --disable-sse4           disable SSE4 optimizations
 403   --disable-sse42          disable SSE4.2 optimizations
 404   --disable-avx            disable AVX optimizations
 405   --disable-xop            disable XOP optimizations
 406   --disable-fma3           disable FMA3 optimizations
 407   --disable-fma4           disable FMA4 optimizations
 408   --disable-avx2           disable AVX2 optimizations
 409   --disable-aesni          disable AESNI optimizations
 410   --disable-armv5te        disable armv5te optimizations
 411   --disable-armv6          disable armv6 optimizations
 412   --disable-armv6t2        disable armv6t2 optimizations
 413   --disable-vfp            disable VFP optimizations
 414   --disable-neon           disable NEON optimizations
 415   --disable-inline-asm     disable use of inline assembly
 416   --disable-x86asm         disable use of standalone x86 assembly
 417   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 418   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 419   --disable-msa            disable MSA optimizations
 420   --disable-mipsfpu        disable floating point MIPS optimizations
 421   --disable-mmi            disable Loongson SIMD optimizations
 422   --disable-fast-unaligned consider unaligned accesses slow
 423
 424 Developer options (useful when working on FFmpeg itself):
 425   --disable-debug          disable debugging symbols
 426   --enable-debug=LEVEL     set the debug level [$debuglevel]
 427   --disable-optimizations  disable compiler optimizations
 428   --enable-extra-warnings  enable more compiler warnings
 429   --disable-stripping      disable stripping of executables and shared libraries
 430   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 431                            2 causes a slowdown at runtime.
 432   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 433   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 434                            leaks and errors, using the specified valgrind binary.
 435                            Cannot be combined with --target-exec
 436   --enable-ftrapv          Trap arithmetic overflows
 437   --samples=PATH           location of test samples for FATE, if not set use
 438                            \$FATE_SAMPLES at make invocation time.
 439   --enable-neon-clobber-test check NEON registers for clobbering (should be
 440                            used only for debugging purposes)
 441   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 442                            should be used only for debugging purposes)
 443   --enable-random          randomly enable/disable components
 444   --disable-random
 445   --enable-random=LIST     randomly enable/disable specific components or
 446   --disable-random=LIST    component groups. LIST is a comma-separated list
 447                            of NAME[:PROB] entries where NAME is a component
 448                            (group) and PROB the probability associated with
 449                            NAME (default 0.5).
 450   --random-seed=VALUE      seed value for --enable/disable-random
 451   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 452                            (only applies to --disable-optimizations builds)
 453   --enable-osfuzz          Enable building fuzzer tool
 454   --libfuzzer=PATH         path to libfuzzer
 455   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 456                            in the name) of tests whose result is ignored
 457   --enable-linux-perf      enable Linux Performance Monitor API
 458
 459 NOTE: Object files are built at the place where configure is launched.
 460 EOF
 461   exit 0
 462 }
 463
 464 quotes='""'
 465 if test -t 1 && which tput >/dev/null 2>&1; then
 466     ncolors=$(tput colors)
 467     if test -n "$ncolors" && test $ncolors -ge 8; then
 468         bold_color=$(tput bold)
 469         warn_color=$(tput setaf 3)
 470         error_color=$(tput setaf 1)
 471         reset_color=$(tput sgr0)
 472     fi
 473     # 72 used instead of 80 since that's the default of pr
 474     ncols=$(tput cols)
 475 fi
 476 : ${ncols:=72}
 477
 478 log(){
 479     echo "$@" >> $logfile
 480 }
 481
 482 log_file(){
 483     log BEGIN $1
 484     pr -n -t $1 >> $logfile
 485     log END $1
 486 }
 487
 488 warn(){
 489     log "WARNING: $*"
 490     WARNINGS="${WARNINGS}WARNING: $*\n"
 491 }
 492
 493 die(){
 494     log "$@"
 495     echo "$error_color$bold_color$@$reset_color"
 496     cat <<EOF
 497
 498 If you think configure made a mistake, make sure you are using the latest
 499 version from Git.  If the latest version fails, report the problem to the
 500 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 501 EOF
 502     if disabled logging; then
 503         cat <<EOF
 504 Rerun configure with logging enabled (do not use --disable-logging), and
 505 include the log this produces with your report.
 506 EOF
 507     else
 508         cat <<EOF
 509 Include the log file "$logfile" produced by configure as this will help
 510 solve the problem.
 511 EOF
 512     fi
 513     exit 1
 514 }
 515
 516 # Avoid locale weirdness, besides we really just want to translate ASCII.
 517 toupper(){
 518     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 519 }
 520
 521 tolower(){
 522     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 523 }
 524
 525 c_escape(){
 526     echo "$*" | sed 's/["\\]/\\\0/g'
 527 }
 528
 529 sh_quote(){
 530     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 531     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 532     echo "$v"
 533 }
 534
 535 cleanws(){
 536     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 537 }
 538
 539 filter(){
 540     pat=$1
 541     shift
 542     for v; do
 543         eval "case $v in $pat) printf '%s ' $v ;; esac"
 544     done
 545 }
 546
 547 filter_out(){
 548     pat=$1
 549     shift
 550     for v; do
 551         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 552     done
 553 }
 554
 555 map(){
 556     m=$1
 557     shift
 558     for v; do eval $m; done
 559 }
 560
 561 add_suffix(){
 562     suffix=$1
 563     shift
 564     for v; do echo ${v}${suffix}; done
 565 }
 566
 567 set_all(){
 568     value=$1
 569     shift
 570     for var in $*; do
 571         eval $var=$value
 572     done
 573 }
 574
 575 set_weak(){
 576     value=$1
 577     shift
 578     for var; do
 579         eval : \${$var:=$value}
 580     done
 581 }
 582
 583 sanitize_var_name(){
 584     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 585 }
 586
 587 set_sanitized(){
 588     var=$1
 589     shift
 590     eval $(sanitize_var_name "$var")='$*'
 591 }
 592
 593 get_sanitized(){
 594     eval echo \$$(sanitize_var_name "$1")
 595 }
 596
 597 pushvar(){
 598     for pvar in $*; do
 599         eval level=\${${pvar}_level:=0}
 600         eval ${pvar}_${level}="\$$pvar"
 601         eval ${pvar}_level=$(($level+1))
 602     done
 603 }
 604
 605 popvar(){
 606     for pvar in $*; do
 607         eval level=\${${pvar}_level:-0}
 608         test $level = 0 && continue
 609         eval level=$(($level-1))
 610         eval $pvar="\${${pvar}_${level}}"
 611         eval ${pvar}_level=$level
 612         eval unset ${pvar}_${level}
 613     done
 614 }
 615
 616 request(){
 617     for var in $*; do
 618         eval ${var}_requested=yes
 619         eval $var=
 620     done
 621 }
 622
 623 enable(){
 624     set_all yes $*
 625 }
 626
 627 disable(){
 628     set_all no $*
 629 }
 630
 631 enable_weak(){
 632     set_weak yes $*
 633 }
 634
 635 disable_weak(){
 636     set_weak no $*
 637 }
 638
 639 enable_sanitized(){
 640     for var; do
 641         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 642     done
 643 }
 644
 645 disable_sanitized(){
 646     for var; do
 647         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 648     done
 649 }
 650
 651 do_enable_deep(){
 652     for var; do
 653         enabled $var && continue
 654         eval sel="\$${var}_select"
 655         eval sgs="\$${var}_suggest"
 656         pushvar var sgs
 657         enable_deep $sel
 658         popvar sgs
 659         enable_deep_weak $sgs
 660         popvar var
 661     done
 662 }
 663
 664 enable_deep(){
 665     do_enable_deep $*
 666     enable $*
 667 }
 668
 669 enable_deep_weak(){
 670     for var; do
 671         disabled $var && continue
 672         pushvar var
 673         do_enable_deep $var
 674         popvar var
 675         enable_weak $var
 676     done
 677 }
 678
 679 requested(){
 680     test "${1#!}" = "$1" && op='=' || op=!=
 681     eval test "x\$${1#!}_requested" $op "xyes"
 682 }
 683
 684 enabled(){
 685     test "${1#!}" = "$1" && op='=' || op=!=
 686     eval test "x\$${1#!}" $op "xyes"
 687 }
 688
 689 disabled(){
 690     test "${1#!}" = "$1" && op='=' || op=!=
 691     eval test "x\$${1#!}" $op "xno"
 692 }
 693
 694 enabled_all(){
 695     for opt; do
 696         enabled $opt || return 1
 697     done
 698 }
 699
 700 disabled_all(){
 701     for opt; do
 702         disabled $opt || return 1
 703     done
 704 }
 705
 706 enabled_any(){
 707     for opt; do
 708         enabled $opt && return 0
 709     done
 710 }
 711
 712 disabled_any(){
 713     for opt; do
 714         disabled $opt && return 0
 715     done
 716     return 1
 717 }
 718
 719 set_default(){
 720     for opt; do
 721         eval : \${$opt:=\$${opt}_default}
 722     done
 723 }
 724
 725 is_in(){
 726     value=$1
 727     shift
 728     for var in $*; do
 729         [ $var = $value ] && return 0
 730     done
 731     return 1
 732 }
 733
 734 check_deps(){
 735     for cfg; do
 736         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 737         disabled ${cfg}_checking && continue
 738         enable ${cfg}_checking
 739
 740         eval dep_all="\$${cfg}_deps"
 741         eval dep_any="\$${cfg}_deps_any"
 742         eval dep_con="\$${cfg}_conflict"
 743         eval dep_sel="\$${cfg}_select"
 744         eval dep_sgs="\$${cfg}_suggest"
 745         eval dep_ifa="\$${cfg}_if"
 746         eval dep_ifn="\$${cfg}_if_any"
 747
 748         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 749         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 750         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 751
 752         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 753         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 754         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 755         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 756         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 757         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 758
 759         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 760
 761         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 762             # filter out library deps, these do not belong in extralibs
 763             is_in $dep $LIBRARY_LIST && continue
 764             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 765         done
 766
 767         disable ${cfg}_checking
 768     done
 769 }
 770
 771 print_config(){
 772     pfx=$1
 773     files=$2
 774     shift 2
 775     map 'eval echo "$v \${$v:-no}"' "$@" |
 776     awk "BEGIN { split(\"$files\", files) }
 777         {
 778             c = \"$pfx\" toupper(\$1);
 779             v = \$2;
 780             sub(/yes/, 1, v);
 781             sub(/no/,  0, v);
 782             for (f in files) {
 783                 file = files[f];
 784                 if (file ~ /\\.h\$/) {
 785                     printf(\"#define %s %d\\n\", c, v) >>file;
 786                 } else if (file ~ /\\.asm\$/) {
 787                     printf(\"%%define %s %d\\n\", c, v) >>file;
 788                 } else if (file ~ /\\.mak\$/) {
 789                     n = -v ? \"\" : \"!\";
 790                     printf(\"%s%s=yes\\n\", n, c) >>file;
 791                 } else if (file ~ /\\.texi\$/) {
 792                     pre = -v ? \"\" : \"@c \";
 793                     yesno = \$2;
 794                     c2 = tolower(c);
 795                     gsub(/_/, \"-\", c2);
 796                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 797                 }
 798             }
 799         }"
 800 }
 801
 802 print_enabled(){
 803     suf=$1
 804     shift
 805     for v; do
 806         enabled $v && printf "%s\n" ${v%$suf}
 807     done
 808 }
 809
 810 append(){
 811     var=$1
 812     shift
 813     eval "$var=\"\$$var $*\""
 814 }
 815
 816 prepend(){
 817     var=$1
 818     shift
 819     eval "$var=\"$* \$$var\""
 820 }
 821
 822 unique(){
 823     var=$1
 824     uniq_list=""
 825     for tok in $(eval echo \$$var); do
 826         uniq_list="$(filter_out $tok $uniq_list) $tok"
 827     done
 828     eval "$var=\"${uniq_list}\""
 829 }
 830
 831 resolve(){
 832     var=$1
 833     tmpvar=
 834     for entry in $(eval echo \$$var); do
 835         tmpvar="$tmpvar $(eval echo \$${entry})"
 836     done
 837     eval "$var=\"${tmpvar}\""
 838 }
 839
 840 add_cppflags(){
 841     append CPPFLAGS "$@"
 842 }
 843
 844 add_cflags(){
 845     append CFLAGS $($cflags_filter "$@")
 846 }
 847
 848 add_cflags_headers(){
 849     append CFLAGS_HEADERS $($cflags_filter "$@")
 850 }
 851
 852 add_cxxflags(){
 853     append CXXFLAGS $($cflags_filter "$@")
 854 }
 855
 856 add_asflags(){
 857     append ASFLAGS $($asflags_filter "$@")
 858 }
 859
 860 add_objcflags(){
 861     append OBJCFLAGS $($objcflags_filter "$@")
 862 }
 863
 864 add_ldflags(){
 865     append LDFLAGS $($ldflags_filter "$@")
 866 }
 867
 868 add_ldexeflags(){
 869     append LDEXEFLAGS $($ldflags_filter "$@")
 870 }
 871
 872 add_ldlibflags(){
 873     append LDLIBFLAGS $($ldflags_filter "$@")
 874 }
 875
 876 add_stripflags(){
 877     append ASMSTRIPFLAGS "$@"
 878 }
 879
 880 add_extralibs(){
 881     prepend extralibs $($ldflags_filter "$@")
 882 }
 883
 884 add_host_cppflags(){
 885     append host_cppflags "$@"
 886 }
 887
 888 add_host_cflags(){
 889     append host_cflags $($host_cflags_filter "$@")
 890 }
 891
 892 add_host_ldflags(){
 893     append host_ldflags $($host_ldflags_filter "$@")
 894 }
 895
 896 add_compat(){
 897     append compat_objs $1
 898     shift
 899     map 'add_cppflags -D$v' "$@"
 900 }
 901
 902 check_cmd(){
 903     log "$@"
 904     "$@" >> $logfile 2>&1
 905 }
 906
 907 check_stat(){
 908     log check_stat "$@"
 909     stat "$1" >> $logfile 2>&1
 910 }
 911
 912 cc_o(){
 913     eval printf '%s\\n' $CC_O
 914 }
 915
 916 cc_e(){
 917     eval printf '%s\\n' $CC_E
 918 }
 919
 920 check_cc(){
 921     log check_cc "$@"
 922     cat > $TMPC
 923     log_file $TMPC
 924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 925 }
 926
 927 check_cxx(){
 928     log check_cxx "$@"
 929     cat > $TMPCPP
 930     log_file $TMPCPP
 931     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 932 }
 933
 934 check_objcc(){
 935     log check_objcc "$@"
 936     cat > $TMPM
 937     log_file $TMPM
 938     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 939 }
 940
 941 check_cpp(){
 942     log check_cpp "$@"
 943     cat > $TMPC
 944     log_file $TMPC
 945     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 946 }
 947
 948 as_o(){
 949     eval printf '%s\\n' $AS_O
 950 }
 951
 952 check_as(){
 953     log check_as "$@"
 954     cat > $TMPS
 955     log_file $TMPS
 956     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 957 }
 958
 959 check_inline_asm(){
 960     log check_inline_asm "$@"
 961     name="$1"
 962     code="$2"
 963     shift 2
 964     disable $name
 965     check_cc "$@" <<EOF && enable $name
 966 void foo(void){ __asm__ volatile($code); }
 967 EOF
 968 }
 969
 970 check_inline_asm_flags(){
 971     log check_inline_asm_flags "$@"
 972     name="$1"
 973     code="$2"
 974     flags=''
 975     shift 2
 976     while [ "$1" != "" ]; do
 977       append flags $1
 978       shift
 979     done;
 980     disable $name
 981     cat > $TMPC <<EOF
 982 void foo(void){ __asm__ volatile($code); }
 983 EOF
 984     log_file $TMPC
 985     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 986     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 987 }
 988
 989 check_insn(){
 990     log check_insn "$@"
 991     check_inline_asm ${1}_inline "\"$2\""
 992     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 993 }
 994
 995 check_x86asm(){
 996     log check_x86asm "$@"
 997     echo "$1" > $TMPS
 998     log_file $TMPS
 999     shift 1
1000     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 check_ld(){
1008     log check_ld "$@"
1009     type=$1
1010     shift 1
1011     flags=$(filter_out '-l*|*.so' $@)
1012     libs=$(filter '-l*|*.so' $@)
1013     check_$type $($cflags_filter $flags) || return
1014     flags=$($ldflags_filter $flags)
1015     libs=$($ldflags_filter $libs)
1016     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1017 }
1018
1019 print_include(){
1020     hdr=$1
1021     test "${hdr%.h}" = "${hdr}" &&
1022         echo "#include $hdr"    ||
1023         echo "#include <$hdr>"
1024 }
1025
1026 check_code(){
1027     log check_code "$@"
1028     check=$1
1029     headers=$2
1030     code=$3
1031     shift 3
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         echo "int main(void) { $code; return 0; }"
1037     } | check_$check "$@"
1038 }
1039
1040 check_cppflags(){
1041     log check_cppflags "$@"
1042     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1043 #include <stdlib.h>
1044 EOF
1045 }
1046
1047 test_cflags(){
1048     log test_cflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_cflags(){
1056     log check_cflags "$@"
1057     test_cflags "$@" && add_cflags "$@"
1058 }
1059
1060 check_cxxflags(){
1061     log check_cxxflags "$@"
1062     set -- $($cflags_filter "$@")
1063     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1064 int x;
1065 EOF
1066 }
1067
1068 test_objcflags(){
1069     log test_objcflags "$@"
1070     set -- $($objcflags_filter "$@")
1071     check_objcc "$@" <<EOF
1072 int x;
1073 EOF
1074 }
1075
1076 check_objcflags(){
1077     log check_objcflags "$@"
1078     test_objcflags "$@" && add_objcflags "$@"
1079 }
1080
1081 test_ldflags(){
1082     log test_ldflags "$@"
1083     check_ld "cc" "$@" <<EOF
1084 int main(void){ return 0; }
1085 EOF
1086 }
1087
1088 check_ldflags(){
1089     log check_ldflags "$@"
1090     test_ldflags "$@" && add_ldflags "$@"
1091 }
1092
1093 test_stripflags(){
1094     log test_stripflags "$@"
1095     # call check_cc to get a fresh TMPO
1096     check_cc <<EOF
1097 int main(void) { return 0; }
1098 EOF
1099     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1100 }
1101
1102 check_stripflags(){
1103     log check_stripflags "$@"
1104     test_stripflags "$@" && add_stripflags "$@"
1105 }
1106
1107 check_header(){
1108     log check_header "$@"
1109     header=$1
1110     shift
1111     disable_sanitized $header
1112     check_cpp "$@" <<EOF && enable_sanitized $header
1113 #include <$header>
1114 int x;
1115 EOF
1116 }
1117
1118 check_header_objcc(){
1119     log check_header_objcc "$@"
1120     rm -f -- "$TMPO"
1121     header=$1
1122     shift
1123     disable_sanitized $header
1124     {
1125        echo "#include <$header>"
1126        echo "int main(void) { return 0; }"
1127     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1128 }
1129
1130 check_apple_framework(){
1131     log check_apple_framework "$@"
1132     framework="$1"
1133     name="$(tolower $framework)"
1134     header="${framework}/${framework}.h"
1135     disable $name
1136     check_header_objcc $header &&
1137         enable $name && eval ${name}_extralibs='"-framework $framework"'
1138 }
1139
1140 check_func(){
1141     log check_func "$@"
1142     func=$1
1143     shift
1144     disable $func
1145     check_ld "cc" "$@" <<EOF && enable $func
1146 extern int $func();
1147 int main(void){ $func(); }
1148 EOF
1149 }
1150
1151 check_complexfunc(){
1152     log check_complexfunc "$@"
1153     func=$1
1154     narg=$2
1155     shift 2
1156     test $narg = 2 && args="f, g" || args="f * I"
1157     disable $func
1158     check_ld "cc" "$@" <<EOF && enable $func
1159 #include <complex.h>
1160 #include <math.h>
1161 float foo(complex float f, complex float g) { return $func($args); }
1162 int main(void){ return (int) foo; }
1163 EOF
1164 }
1165
1166 check_mathfunc(){
1167     log check_mathfunc "$@"
1168     func=$1
1169     narg=$2
1170     shift 2
1171     test $narg = 2 && args="f, g" || args="f"
1172     disable $func
1173     check_ld "cc" "$@" <<EOF && enable $func
1174 #include <math.h>
1175 float foo(float f, float g) { return $func($args); }
1176 int main(void){ return (int) foo; }
1177 EOF
1178 }
1179
1180 check_func_headers(){
1181     log check_func_headers "$@"
1182     headers=$1
1183     funcs=$2
1184     shift 2
1185     {
1186         for hdr in $headers; do
1187             print_include $hdr
1188         done
1189         echo "#include <stdint.h>"
1190         for func in $funcs; do
1191             echo "long check_$func(void) { return (long) $func; }"
1192         done
1193         echo "int main(void) { int ret = 0;"
1194         # LTO could optimize out the test functions without this
1195         for func in $funcs; do
1196             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1197         done
1198         echo "return ret; }"
1199     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1200 }
1201
1202 check_class_headers_cpp(){
1203     log check_class_headers_cpp "$@"
1204     headers=$1
1205     classes=$2
1206     shift 2
1207     {
1208         for hdr in $headers; do
1209             echo "#include <$hdr>"
1210         done
1211         echo "int main(void) { "
1212         i=1
1213         for class in $classes; do
1214             echo "$class obj$i;"
1215             i=$(expr $i + 1)
1216         done
1217         echo "return 0; }"
1218     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1219 }
1220
1221 check_cpp_condition(){
1222     log check_cpp_condition "$@"
1223     header=$1
1224     condition=$2
1225     shift 2
1226     check_cpp "$@" <<EOF
1227 #include <$header>
1228 #if !($condition)
1229 #error "unsatisfied condition: $condition"
1230 #endif
1231 EOF
1232 }
1233
1234 test_cflags_cc(){
1235     log test_cflags_cc "$@"
1236     flags=$1
1237     header=$2
1238     condition=$3
1239     shift 3
1240     set -- $($cflags_filter "$flags")
1241     check_cc "$@" <<EOF
1242 #include <$header>
1243 #if !($condition)
1244 #error "unsatisfied condition: $condition"
1245 #endif
1246 EOF
1247 }
1248
1249 check_lib(){
1250     log check_lib "$@"
1251     name="$1"
1252     headers="$2"
1253     funcs="$3"
1254     shift 3
1255     disable $name
1256     check_func_headers "$headers" "$funcs" "$@" &&
1257         enable $name && eval ${name}_extralibs="\$@"
1258 }
1259
1260 check_lib_cpp(){
1261     log check_lib_cpp "$@"
1262     name="$1"
1263     headers="$2"
1264     classes="$3"
1265     shift 3
1266     disable $name
1267     check_class_headers_cpp "$headers" "$classes" "$@" &&
1268         enable $name && eval ${name}_extralibs="\$@"
1269 }
1270
1271 check_pkg_config(){
1272     log check_pkg_config "$@"
1273     name="$1"
1274     pkg_version="$2"
1275     pkg="${2%% *}"
1276     headers="$3"
1277     funcs="$4"
1278     shift 4
1279     disable $name
1280     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1281     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1282     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1283     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1284         enable $name &&
1285         set_sanitized "${name}_cflags"    $pkg_cflags &&
1286         set_sanitized "${name}_extralibs" $pkg_libs
1287 }
1288
1289 check_exec(){
1290     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1291 }
1292
1293 check_exec_crash(){
1294     log check_exec_crash "$@"
1295     code=$(cat)
1296
1297     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1298     # are safe but may not be available everywhere.  Thus we use
1299     # raise(SIGTERM) instead.  The check is run in a subshell so we
1300     # can redirect the "Terminated" message from the shell.  SIGBUS
1301     # is not defined by standard C so it is used conditionally.
1302
1303     (check_exec "$@") >> $logfile 2>&1 <<EOF
1304 #include <signal.h>
1305 static void sighandler(int sig){
1306     raise(SIGTERM);
1307 }
1308 int foo(void){
1309     $code
1310 }
1311 int (*func_ptr)(void) = foo;
1312 int main(void){
1313     signal(SIGILL, sighandler);
1314     signal(SIGFPE, sighandler);
1315     signal(SIGSEGV, sighandler);
1316 #ifdef SIGBUS
1317     signal(SIGBUS, sighandler);
1318 #endif
1319     return func_ptr();
1320 }
1321 EOF
1322 }
1323
1324 check_type(){
1325     log check_type "$@"
1326     headers=$1
1327     type=$2
1328     shift 2
1329     disable_sanitized "$type"
1330     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1331 }
1332
1333 check_struct(){
1334     log check_struct "$@"
1335     headers=$1
1336     struct=$2
1337     member=$3
1338     shift 3
1339     disable_sanitized "${struct}_${member}"
1340     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1341         enable_sanitized "${struct}_${member}"
1342 }
1343
1344 check_builtin(){
1345     log check_builtin "$@"
1346     name=$1
1347     headers=$2
1348     builtin=$3
1349     shift 3
1350     disable "$name"
1351     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1352 }
1353
1354 check_compile_assert(){
1355     log check_compile_assert "$@"
1356     name=$1
1357     headers=$2
1358     condition=$3
1359     shift 3
1360     disable "$name"
1361     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1362 }
1363
1364 require(){
1365     log require "$@"
1366     name_version="$1"
1367     name="${1%% *}"
1368     headers="$2"
1369     func="$3"
1370     shift 3
1371     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1372 }
1373
1374 require_cpp(){
1375     name="$1"
1376     headers="$2"
1377     classes="$3"
1378     shift 3
1379     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1380 }
1381
1382 require_header(){
1383     log require "$@"
1384     header="$1"
1385     shift
1386     check_header "$header" "$@" || die "ERROR: $header header not found"
1387 }
1388
1389 require_cpp_condition(){
1390     log require "$@"
1391     header="$1"
1392     condition="$2"
1393     shift 2
1394     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1395 }
1396
1397 use_pkg_config(){
1398     log use_pkg_config "$@"
1399     name="$1"
1400     check_pkg_config "$@" || return 1
1401     add_cflags    $(get_sanitized "${name}_cflags")
1402 }
1403
1404 require_pkg_config(){
1405     log require_pkg_config "$@"
1406     pkg_version="$2"
1407     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1408 }
1409
1410 hostcc_e(){
1411     eval printf '%s\\n' $HOSTCC_E
1412 }
1413
1414 hostcc_o(){
1415     eval printf '%s\\n' $HOSTCC_O
1416 }
1417
1418 check_host_cc(){
1419     log check_host_cc "$@"
1420     cat > $TMPC
1421     log_file $TMPC
1422     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1423 }
1424
1425 check_host_cpp(){
1426     log check_host_cpp "$@"
1427     cat > $TMPC
1428     log_file $TMPC
1429     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1430 }
1431
1432 check_host_cppflags(){
1433     log check_host_cppflags "$@"
1434     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1435 #include <stdlib.h>
1436 EOF
1437 }
1438
1439 check_host_cflags(){
1440     log check_host_cflags "$@"
1441     set -- $($host_cflags_filter "$@")
1442     check_host_cc "$@" <<EOF && append host_cflags "$@"
1443 int x;
1444 EOF
1445 }
1446
1447 check_host_cpp_condition(){
1448     log check_host_cpp_condition "$@"
1449     header=$1
1450     condition=$2
1451     shift 2
1452     check_host_cpp "$@" <<EOF
1453 #include <$header>
1454 #if !($condition)
1455 #error "unsatisfied condition: $condition"
1456 #endif
1457 EOF
1458 }
1459
1460 cp_if_changed(){
1461     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1462     mkdir -p "$(dirname $2)"
1463     cp -f "$1" "$2"
1464 }
1465
1466 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1467 # system-dependent things.
1468
1469 AVCODEC_COMPONENTS="
1470     bsfs
1471     decoders
1472     encoders
1473     hwaccels
1474     parsers
1475 "
1476
1477 AVDEVICE_COMPONENTS="
1478     indevs
1479     outdevs
1480 "
1481
1482 AVFILTER_COMPONENTS="
1483     filters
1484 "
1485
1486 AVFORMAT_COMPONENTS="
1487     demuxers
1488     muxers
1489     protocols
1490 "
1491
1492 AVRESAMPLE_COMPONENTS=""
1493
1494 AVUTIL_COMPONENTS=""
1495
1496 COMPONENT_LIST="
1497     $AVCODEC_COMPONENTS
1498     $AVDEVICE_COMPONENTS
1499     $AVFILTER_COMPONENTS
1500     $AVFORMAT_COMPONENTS
1501     $AVRESAMPLE_COMPONENTS
1502     $AVUTIL_COMPONENTS
1503 "
1504
1505 EXAMPLE_LIST="
1506     avio_dir_cmd_example
1507     avio_reading_example
1508     decode_audio_example
1509     decode_video_example
1510     demuxing_decoding_example
1511     encode_audio_example
1512     encode_video_example
1513     extract_mvs_example
1514     filter_audio_example
1515     filtering_audio_example
1516     filtering_video_example
1517     http_multiclient_example
1518     hw_decode_example
1519     metadata_example
1520     muxing_example
1521     qsvdec_example
1522     remuxing_example
1523     resampling_audio_example
1524     scaling_video_example
1525     transcode_aac_example
1526     transcoding_example
1527 "
1528
1529 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1530     alsa
1531     appkit
1532     avfoundation
1533     bzlib
1534     coreimage
1535     iconv
1536     libxcb
1537     libxcb_shm
1538     libxcb_shape
1539     libxcb_xfixes
1540     lzma
1541     schannel
1542     sdl2
1543     securetransport
1544     sndio
1545     xlib
1546     zlib
1547 "
1548
1549 EXTERNAL_LIBRARY_GPL_LIST="
1550     avisynth
1551     frei0r
1552     libcdio
1553     librubberband
1554     libvidstab
1555     libx264
1556     libx265
1557     libxavs
1558     libxvid
1559 "
1560
1561 EXTERNAL_LIBRARY_NONFREE_LIST="
1562     decklink
1563     libndi_newtek
1564     libfdk_aac
1565     openssl
1566 "
1567
1568 EXTERNAL_LIBRARY_VERSION3_LIST="
1569     gmp
1570     libopencore_amrnb
1571     libopencore_amrwb
1572     libvo_amrwbenc
1573     rkmpp
1574 "
1575
1576 EXTERNAL_LIBRARY_GPLV3_LIST="
1577     libsmbclient
1578 "
1579
1580 EXTERNAL_LIBRARY_LIST="
1581     $EXTERNAL_LIBRARY_GPL_LIST
1582     $EXTERNAL_LIBRARY_NONFREE_LIST
1583     $EXTERNAL_LIBRARY_VERSION3_LIST
1584     $EXTERNAL_LIBRARY_GPLV3_LIST
1585     chromaprint
1586     gcrypt
1587     gnutls
1588     jni
1589     ladspa
1590     libass
1591     libbluray
1592     libbs2b
1593     libcaca
1594     libcelt
1595     libdc1394
1596     libdrm
1597     libflite
1598     libfontconfig
1599     libfreetype
1600     libfribidi
1601     libgme
1602     libgsm
1603     libiec61883
1604     libilbc
1605     libjack
1606     libkvazaar
1607     libmodplug
1608     libmp3lame
1609     libmysofa
1610     libopencv
1611     libopenh264
1612     libopenjpeg
1613     libopenmpt
1614     libopus
1615     libpulse
1616     librsvg
1617     librtmp
1618     libshine
1619     libsmbclient
1620     libsnappy
1621     libsoxr
1622     libspeex
1623     libssh
1624     libtesseract
1625     libtheora
1626     libtwolame
1627     libv4l2
1628     libvmaf
1629     libvorbis
1630     libvpx
1631     libwavpack
1632     libwebp
1633     libxml2
1634     libzimg
1635     libzmq
1636     libzvbi
1637     mediacodec
1638     openal
1639     opencl
1640     opengl
1641 "
1642
1643 HWACCEL_AUTODETECT_LIBRARY_LIST="
1644     audiotoolbox
1645     crystalhd
1646     cuda
1647     cuvid
1648     d3d11va
1649     dxva2
1650     nvenc
1651     vaapi
1652     vdpau
1653     videotoolbox
1654     v4l2_m2m
1655     xvmc
1656 "
1657
1658 # catchall list of things that require external libs to link
1659 EXTRALIBS_LIST="
1660     cpu_init
1661     cws2fws
1662 "
1663
1664 HWACCEL_LIBRARY_NONFREE_LIST="
1665     cuda_sdk
1666     libnpp
1667 "
1668
1669 HWACCEL_LIBRARY_LIST="
1670     $HWACCEL_LIBRARY_NONFREE_LIST
1671     libmfx
1672     mmal
1673     omx
1674 "
1675
1676 DOCUMENT_LIST="
1677     doc
1678     htmlpages
1679     manpages
1680     podpages
1681     txtpages
1682 "
1683
1684 FEATURE_LIST="
1685     ftrapv
1686     gray
1687     hardcoded_tables
1688     omx_rpi
1689     runtime_cpudetect
1690     safe_bitstream_reader
1691     shared
1692     small
1693     static
1694     swscale_alpha
1695 "
1696
1697 LIBRARY_LIST="
1698     avcodec
1699     avdevice
1700     avfilter
1701     avformat
1702     avresample
1703     avutil
1704     postproc
1705     swresample
1706     swscale
1707 "
1708
1709 LICENSE_LIST="
1710     gpl
1711     nonfree
1712     version3
1713 "
1714
1715 PROGRAM_LIST="
1716     ffplay
1717     ffprobe
1718     ffserver
1719     ffmpeg
1720 "
1721
1722 SUBSYSTEM_LIST="
1723     dct
1724     dwt
1725     error_resilience
1726     faan
1727     fast_unaligned
1728     fft
1729     lsp
1730     lzo
1731     mdct
1732     pixelutils
1733     network
1734     rdft
1735 "
1736
1737 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1738 CONFIG_LIST="
1739     $DOCUMENT_LIST
1740     $EXAMPLE_LIST
1741     $EXTERNAL_LIBRARY_LIST
1742     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1743     $HWACCEL_LIBRARY_LIST
1744     $HWACCEL_AUTODETECT_LIBRARY_LIST
1745     $FEATURE_LIST
1746     $LICENSE_LIST
1747     $LIBRARY_LIST
1748     $PROGRAM_LIST
1749     $SUBSYSTEM_LIST
1750     autodetect
1751     fontconfig
1752     linux_perf
1753     memory_poisoning
1754     neon_clobber_test
1755     ossfuzz
1756     pic
1757     thumb
1758     valgrind_backtrace
1759     xmm_clobber_test
1760     $COMPONENT_LIST
1761 "
1762
1763 THREADS_LIST="
1764     pthreads
1765     os2threads
1766     w32threads
1767 "
1768
1769 ATOMICS_LIST="
1770     atomics_gcc
1771     atomics_suncc
1772     atomics_win32
1773 "
1774
1775 AUTODETECT_LIBS="
1776     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1777     $HWACCEL_AUTODETECT_LIBRARY_LIST
1778     $THREADS_LIST
1779 "
1780
1781 ARCH_LIST="
1782     aarch64
1783     alpha
1784     arm
1785     avr32
1786     avr32_ap
1787     avr32_uc
1788     bfin
1789     ia64
1790     m68k
1791     mips
1792     mips64
1793     parisc
1794     ppc
1795     ppc64
1796     s390
1797     sh4
1798     sparc
1799     sparc64
1800     tilegx
1801     tilepro
1802     tomi
1803     x86
1804     x86_32
1805     x86_64
1806 "
1807
1808 ARCH_EXT_LIST_ARM="
1809     armv5te
1810     armv6
1811     armv6t2
1812     armv8
1813     neon
1814     vfp
1815     vfpv3
1816     setend
1817 "
1818
1819 ARCH_EXT_LIST_MIPS="
1820     mipsfpu
1821     mips32r2
1822     mips32r5
1823     mips64r2
1824     mips32r6
1825     mips64r6
1826     mipsdsp
1827     mipsdspr2
1828     msa
1829 "
1830
1831 ARCH_EXT_LIST_LOONGSON="
1832     loongson2
1833     loongson3
1834     mmi
1835 "
1836
1837 ARCH_EXT_LIST_X86_SIMD="
1838     aesni
1839     amd3dnow
1840     amd3dnowext
1841     avx
1842     avx2
1843     fma3
1844     fma4
1845     mmx
1846     mmxext
1847     sse
1848     sse2
1849     sse3
1850     sse4
1851     sse42
1852     ssse3
1853     xop
1854 "
1855
1856 ARCH_EXT_LIST_PPC="
1857     altivec
1858     dcbzl
1859     ldbrx
1860     power8
1861     ppc4xx
1862     vsx
1863 "
1864
1865 ARCH_EXT_LIST_X86="
1866     $ARCH_EXT_LIST_X86_SIMD
1867     cpunop
1868     i686
1869 "
1870
1871 ARCH_EXT_LIST="
1872     $ARCH_EXT_LIST_ARM
1873     $ARCH_EXT_LIST_PPC
1874     $ARCH_EXT_LIST_X86
1875     $ARCH_EXT_LIST_MIPS
1876     $ARCH_EXT_LIST_LOONGSON
1877 "
1878
1879 ARCH_FEATURES="
1880     aligned_stack
1881     fast_64bit
1882     fast_clz
1883     fast_cmov
1884     local_aligned
1885     simd_align_16
1886     simd_align_32
1887 "
1888
1889 BUILTIN_LIST="
1890     atomic_cas_ptr
1891     machine_rw_barrier
1892     MemoryBarrier
1893     mm_empty
1894     rdtsc
1895     sarestart
1896     sem_timedwait
1897     sync_val_compare_and_swap
1898 "
1899 HAVE_LIST_CMDLINE="
1900     inline_asm
1901     symver
1902     x86asm
1903 "
1904
1905 HAVE_LIST_PUB="
1906     bigendian
1907     fast_unaligned
1908 "
1909
1910 HEADERS_LIST="
1911     altivec_h
1912     arpa_inet_h
1913     asm_types_h
1914     cdio_paranoia_h
1915     cdio_paranoia_paranoia_h
1916     cuda_h
1917     d3d11_h
1918     dispatch_dispatch_h
1919     dev_bktr_ioctl_bt848_h
1920     dev_bktr_ioctl_meteor_h
1921     dev_ic_bt8xx_h
1922     dev_video_bktr_ioctl_bt848_h
1923     dev_video_meteor_ioctl_meteor_h
1924     direct_h
1925     dirent_h
1926     dlfcn_h
1927     dxgidebug_h
1928     dxva_h
1929     ES2_gl_h
1930     gsm_h
1931     io_h
1932     mach_mach_time_h
1933     machine_ioctl_bt848_h
1934     machine_ioctl_meteor_h
1935     malloc_h
1936     opencv2_core_core_c_h
1937     OpenGL_gl3_h
1938     poll_h
1939     soundcard_h
1940     stdatomic_h
1941     sys_mman_h
1942     sys_param_h
1943     sys_resource_h
1944     sys_select_h
1945     sys_soundcard_h
1946     sys_time_h
1947     sys_un_h
1948     sys_videoio_h
1949     termios_h
1950     udplite_h
1951     unistd_h
1952     valgrind_valgrind_h
1953     windows_h
1954     winsock2_h
1955 "
1956
1957 INTRINSICS_LIST="
1958     intrinsics_neon
1959 "
1960
1961 COMPLEX_FUNCS="
1962     cabs
1963     cexp
1964 "
1965
1966 MATH_FUNCS="
1967     atanf
1968     atan2f
1969     cbrt
1970     cbrtf
1971     copysign
1972     cosf
1973     erf
1974     exp2
1975     exp2f
1976     expf
1977     hypot
1978     isfinite
1979     isinf
1980     isnan
1981     ldexpf
1982     llrint
1983     llrintf
1984     log2
1985     log2f
1986     log10f
1987     lrint
1988     lrintf
1989     powf
1990     rint
1991     round
1992     roundf
1993     sinf
1994     trunc
1995     truncf
1996 "
1997
1998 SYSTEM_FUNCS="
1999     access
2000     aligned_malloc
2001     arc4random
2002     clock_gettime
2003     closesocket
2004     CommandLineToArgvW
2005     CoTaskMemFree
2006     CryptGenRandom
2007     fcntl
2008     flt_lim
2009     fork
2010     getaddrinfo
2011     gethrtime
2012     getopt
2013     GetProcessAffinityMask
2014     GetProcessMemoryInfo
2015     GetProcessTimes
2016     getrusage
2017     GetSystemTimeAsFileTime
2018     gettimeofday
2019     glob
2020     glXGetProcAddress
2021     gmtime_r
2022     inet_aton
2023     isatty
2024     kbhit
2025     LoadLibrary
2026     localtime_r
2027     lstat
2028     lzo1x_999_compress
2029     mach_absolute_time
2030     MapViewOfFile
2031     memalign
2032     mkstemp
2033     mmap
2034     mprotect
2035     nanosleep
2036     PeekNamedPipe
2037     posix_memalign
2038     pthread_cancel
2039     sched_getaffinity
2040     SetConsoleTextAttribute
2041     SetConsoleCtrlHandler
2042     setmode
2043     setrlimit
2044     Sleep
2045     strerror_r
2046     sysconf
2047     sysctl
2048     usleep
2049     UTGetOSTypeFromString
2050     VirtualAlloc
2051     wglGetProcAddress
2052 "
2053
2054 TOOLCHAIN_FEATURES="
2055     as_dn_directive
2056     as_fpu_directive
2057     as_func
2058     as_object_arch
2059     asm_mod_q
2060     attribute_may_alias
2061     attribute_packed
2062     blocks_extension
2063     ebp_available
2064     ebx_available
2065     gnu_as
2066     gnu_windres
2067     ibm_asm
2068     inline_asm_direct_symbol_refs
2069     inline_asm_labels
2070     inline_asm_nonlocal_labels
2071     pragma_deprecated
2072     rsync_contimeout
2073     symver_asm_label
2074     symver_gnu_asm
2075     vfp_args
2076     xform_asm
2077     xmm_clobbers
2078 "
2079
2080 TYPES_LIST="
2081     CONDITION_VARIABLE_Ptr
2082     kCMVideoCodecType_HEVC
2083     socklen_t
2084     struct_addrinfo
2085     struct_group_source_req
2086     struct_ip_mreq_source
2087     struct_ipv6_mreq
2088     struct_msghdr_msg_flags
2089     struct_pollfd
2090     struct_rusage_ru_maxrss
2091     struct_sctp_event_subscribe
2092     struct_sockaddr_in6
2093     struct_sockaddr_sa_len
2094     struct_sockaddr_storage
2095     struct_stat_st_mtim_tv_nsec
2096     struct_v4l2_frmivalenum_discrete
2097 "
2098
2099 HAVE_LIST="
2100     $ARCH_EXT_LIST
2101     $(add_suffix _external $ARCH_EXT_LIST)
2102     $(add_suffix _inline   $ARCH_EXT_LIST)
2103     $ARCH_FEATURES
2104     $ATOMICS_LIST
2105     $BUILTIN_LIST
2106     $COMPLEX_FUNCS
2107     $HAVE_LIST_CMDLINE
2108     $HAVE_LIST_PUB
2109     $HEADERS_LIST
2110     $INTRINSICS_LIST
2111     $MATH_FUNCS
2112     $SYSTEM_FUNCS
2113     $THREADS_LIST
2114     $TOOLCHAIN_FEATURES
2115     $TYPES_LIST
2116     atomics_native
2117     dos_paths
2118     libc_msvcrt
2119     makeinfo
2120     makeinfo_html
2121     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2122     perl
2123     pod2man
2124     section_data_rel_ro
2125     texi2html
2126     threads
2127     uwp
2128     vaapi_drm
2129     vaapi_x11
2130     vdpau_x11
2131     winrt
2132 "
2133
2134 # options emitted with CONFIG_ prefix but not available on the command line
2135 CONFIG_EXTRA="
2136     aandcttables
2137     ac3dsp
2138     audio_frame_queue
2139     audiodsp
2140     blockdsp
2141     bswapdsp
2142     cabac
2143     cbs
2144     cbs_h264
2145     cbs_h265
2146     cbs_mpeg2
2147     dirac_parse
2148     dvprofile
2149     exif
2150     faandct
2151     faanidct
2152     fdctdsp
2153     flacdsp
2154     fmtconvert
2155     frame_thread_encoder
2156     g722dsp
2157     golomb
2158     gplv3
2159     h263dsp
2160     h264chroma
2161     h264dsp
2162     h264parse
2163     h264pred
2164     h264qpel
2165     hevcparse
2166     hpeldsp
2167     huffman
2168     huffyuvdsp
2169     huffyuvencdsp
2170     idctdsp
2171     iirfilter
2172     mdct15
2173     intrax8
2174     iso_media
2175     ividsp
2176     jpegtables
2177     lgplv3
2178     libx262
2179     llauddsp
2180     llviddsp
2181     llvidencdsp
2182     lpc
2183     lzf
2184     me_cmp
2185     mpeg_er
2186     mpegaudio
2187     mpegaudiodsp
2188     mpegaudioheader
2189     mpegvideo
2190     mpegvideoenc
2191     mss34dsp
2192     pixblockdsp
2193     qpeldsp
2194     qsv
2195     qsvdec
2196     qsvenc
2197     rangecoder
2198     riffdec
2199     riffenc
2200     rtpdec
2201     rtpenc_chain
2202     rv34dsp
2203     sinewin
2204     snappy
2205     srtp
2206     startcode
2207     texturedsp
2208     texturedspenc
2209     tpeldsp
2210     vaapi_1
2211     vaapi_encode
2212     vc1dsp
2213     videodsp
2214     vp3dsp
2215     vp56dsp
2216     vp8dsp
2217     wma_freqs
2218     wmv2dsp
2219 "
2220
2221 CMDLINE_SELECT="
2222     $ARCH_EXT_LIST
2223     $CONFIG_LIST
2224     $HAVE_LIST_CMDLINE
2225     $THREADS_LIST
2226     asm
2227     cross_compile
2228     debug
2229     extra_warnings
2230     logging
2231     lto
2232     optimizations
2233     rpath
2234     stripping
2235 "
2236
2237 PATHS_LIST="
2238     bindir
2239     datadir
2240     docdir
2241     incdir
2242     libdir
2243     mandir
2244     pkgconfigdir
2245     prefix
2246     shlibdir
2247     install_name_dir
2248 "
2249
2250 CMDLINE_SET="
2251     $PATHS_LIST
2252     ar
2253     arch
2254     as
2255     assert_level
2256     build_suffix
2257     cc
2258     objcc
2259     cpu
2260     cross_prefix
2261     custom_allocator
2262     cxx
2263     dep_cc
2264     doxygen
2265     env
2266     extra_version
2267     gas
2268     host_cc
2269     host_cflags
2270     host_extralibs
2271     host_ld
2272     host_ldflags
2273     host_os
2274     ignore_tests
2275     install
2276     ld
2277     ln_s
2278     logfile
2279     malloc_prefix
2280     nm
2281     optflags
2282     nvccflags
2283     pkg_config
2284     pkg_config_flags
2285     progs_suffix
2286     random_seed
2287     ranlib
2288     samples
2289     strip
2290     sws_max_filter_size
2291     sysinclude
2292     sysroot
2293     target_exec
2294     target_os
2295     target_path
2296     target_samples
2297     tempprefix
2298     toolchain
2299     valgrind
2300     x86asmexe
2301 "
2302
2303 CMDLINE_APPEND="
2304     extra_cflags
2305     extra_cxxflags
2306     extra_objcflags
2307     host_cppflags
2308 "
2309
2310 # code dependency declarations
2311
2312 # architecture extensions
2313
2314 armv5te_deps="arm"
2315 armv6_deps="arm"
2316 armv6t2_deps="arm"
2317 armv8_deps="aarch64"
2318 neon_deps_any="aarch64 arm"
2319 intrinsics_neon_deps="neon"
2320 vfp_deps_any="aarch64 arm"
2321 vfpv3_deps="vfp"
2322 setend_deps="arm"
2323
2324 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2325
2326 loongson2_deps="mips"
2327 loongson3_deps="mips"
2328 mipsfpu_deps="mips"
2329 mipsdsp_deps="mips"
2330 mipsdspr2_deps="mips"
2331 mips32r2_deps="mips"
2332 mips32r5_deps="mips"
2333 mips32r6_deps="mips"
2334 mips64r2_deps="mips"
2335 mips64r6_deps="mips"
2336 msa_deps="mipsfpu"
2337 mmi_deps="mips"
2338
2339 altivec_deps="ppc"
2340 dcbzl_deps="ppc"
2341 ldbrx_deps="ppc"
2342 ppc4xx_deps="ppc"
2343 vsx_deps="altivec"
2344 power8_deps="vsx"
2345
2346 cpunop_deps="i686"
2347 x86_64_select="i686"
2348 x86_64_suggest="fast_cmov"
2349
2350 amd3dnow_deps="mmx"
2351 amd3dnowext_deps="amd3dnow"
2352 i686_deps="x86"
2353 mmx_deps="x86"
2354 mmxext_deps="mmx"
2355 sse_deps="mmxext"
2356 sse2_deps="sse"
2357 sse3_deps="sse2"
2358 ssse3_deps="sse3"
2359 sse4_deps="ssse3"
2360 sse42_deps="sse4"
2361 aesni_deps="sse42"
2362 avx_deps="sse42"
2363 xop_deps="avx"
2364 fma3_deps="avx"
2365 fma4_deps="avx"
2366 avx2_deps="avx"
2367
2368 mmx_external_deps="x86asm"
2369 mmx_inline_deps="inline_asm"
2370 mmx_suggest="mmx_external mmx_inline"
2371
2372 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2373     eval dep=\$${ext}_deps
2374     eval ${ext}_external_deps='"${dep}_external"'
2375     eval ${ext}_inline_deps='"${dep}_inline"'
2376     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2377 done
2378
2379 aligned_stack_if_any="aarch64 ppc x86"
2380 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2381 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2382 fast_unaligned_if_any="aarch64 ppc x86"
2383 simd_align_16_if_any="altivec neon sse"
2384 simd_align_32_if_any="avx"
2385
2386 # system capabilities
2387 symver_if_any="symver_asm_label symver_gnu_asm"
2388 valgrind_backtrace_conflict="optimizations"
2389 valgrind_backtrace_deps="valgrind_valgrind_h"
2390
2391 # threading support
2392 atomics_gcc_if="sync_val_compare_and_swap"
2393 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2394 atomics_win32_if="MemoryBarrier"
2395 atomics_native_if_any="$ATOMICS_LIST"
2396 w32threads_deps="atomics_native"
2397 threads_if_any="$THREADS_LIST"
2398
2399 # subsystems
2400 cbs_h264_select="cbs golomb"
2401 cbs_h265_select="cbs golomb"
2402 cbs_mpeg2_select="cbs"
2403 dct_select="rdft"
2404 dirac_parse_select="golomb"
2405 error_resilience_select="me_cmp"
2406 faandct_deps="faan fdctdsp"
2407 faanidct_deps="faan idctdsp"
2408 h264dsp_select="startcode"
2409 hevcparse_select="golomb"
2410 frame_thread_encoder_deps="encoders threads"
2411 intrax8_select="blockdsp idctdsp"
2412 mdct_select="fft"
2413 mdct15_select="fft"
2414 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2415 mpeg_er_select="error_resilience"
2416 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2417 mpegaudiodsp_select="dct"
2418 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2419 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2420 vc1dsp_select="h264chroma qpeldsp startcode"
2421 rdft_select="fft"
2422
2423 # decoders / encoders
2424 aac_decoder_select="mdct15 mdct sinewin"
2425 aac_fixed_decoder_select="mdct sinewin"
2426 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2427 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2428 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2429 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2430 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2431 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2432 adpcm_g722_decoder_select="g722dsp"
2433 adpcm_g722_encoder_select="g722dsp"
2434 aic_decoder_select="golomb idctdsp"
2435 alac_encoder_select="lpc"
2436 als_decoder_select="bswapdsp"
2437 amrnb_decoder_select="lsp"
2438 amrwb_decoder_select="lsp"
2439 amv_decoder_select="sp5x_decoder exif"
2440 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2441 ape_decoder_select="bswapdsp llauddsp"
2442 apng_decoder_select="zlib"
2443 apng_encoder_select="llvidencdsp zlib"
2444 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2445 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2446 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2447 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2448 atrac1_decoder_select="mdct sinewin"
2449 atrac3_decoder_select="mdct"
2450 atrac3p_decoder_select="mdct sinewin"
2451 avrn_decoder_select="exif jpegtables"
2452 bink_decoder_select="blockdsp hpeldsp"
2453 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2454 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2455 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2456 clearvideo_decoder_select="idctdsp"
2457 cllc_decoder_select="bswapdsp"
2458 comfortnoise_encoder_select="lpc"
2459 cook_decoder_select="audiodsp mdct sinewin"
2460 cscd_decoder_select="lzo"
2461 cscd_decoder_suggest="zlib"
2462 dca_decoder_select="mdct"
2463 dds_decoder_select="texturedsp"
2464 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2465 dnxhd_decoder_select="blockdsp idctdsp"
2466 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2467 dolby_e_decoder_select="mdct"
2468 dvvideo_decoder_select="dvprofile idctdsp"
2469 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2470 dxa_decoder_select="zlib"
2471 dxv_decoder_select="lzf texturedsp"
2472 eac3_decoder_select="ac3_decoder"
2473 eac3_encoder_select="ac3_encoder"
2474 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2475 eatgq_decoder_select="aandcttables"
2476 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2477 exr_decoder_select="zlib"
2478 ffv1_decoder_select="rangecoder"
2479 ffv1_encoder_select="rangecoder"
2480 ffvhuff_decoder_select="huffyuv_decoder"
2481 ffvhuff_encoder_select="huffyuv_encoder"
2482 fic_decoder_select="golomb"
2483 flac_decoder_select="flacdsp"
2484 flac_encoder_select="bswapdsp flacdsp lpc"
2485 flashsv2_decoder_select="zlib"
2486 flashsv2_encoder_select="zlib"
2487 flashsv_decoder_select="zlib"
2488 flashsv_encoder_select="zlib"
2489 flv_decoder_select="h263_decoder"
2490 flv_encoder_select="h263_encoder"
2491 fourxm_decoder_select="blockdsp bswapdsp"
2492 fraps_decoder_select="bswapdsp huffman"
2493 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2494 g729_decoder_select="audiodsp"
2495 h261_decoder_select="mpegvideo"
2496 h261_encoder_select="aandcttables mpegvideoenc"
2497 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2498 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2499 h263i_decoder_select="h263_decoder"
2500 h263p_decoder_select="h263_decoder"
2501 h263p_encoder_select="h263_encoder"
2502 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2503 h264_decoder_suggest="error_resilience"
2504 hap_decoder_select="snappy texturedsp"
2505 hap_encoder_deps="libsnappy"
2506 hap_encoder_select="texturedspenc"
2507 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2508 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2509 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2510 iac_decoder_select="imc_decoder"
2511 imc_decoder_select="bswapdsp fft mdct sinewin"
2512 indeo3_decoder_select="hpeldsp"
2513 indeo4_decoder_select="ividsp"
2514 indeo5_decoder_select="ividsp"
2515 interplay_video_decoder_select="hpeldsp"
2516 jpegls_decoder_select="mjpeg_decoder"
2517 jv_decoder_select="blockdsp"
2518 lagarith_decoder_select="llviddsp"
2519 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2520 magicyuv_decoder_select="llviddsp"
2521 magicyuv_encoder_select="llvidencdsp"
2522 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2523 metasound_decoder_select="lsp mdct sinewin"
2524 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2525 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2526 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2527 mjpegb_decoder_select="mjpeg_decoder"
2528 mlp_decoder_select="mlp_parser"
2529 mlp_encoder_select="lpc"
2530 motionpixels_decoder_select="bswapdsp"
2531 mp1_decoder_select="mpegaudio"
2532 mp1float_decoder_select="mpegaudio"
2533 mp2_decoder_select="mpegaudio"
2534 mp2float_decoder_select="mpegaudio"
2535 mp3_decoder_select="mpegaudio"
2536 mp3adu_decoder_select="mpegaudio"
2537 mp3adufloat_decoder_select="mpegaudio"
2538 mp3float_decoder_select="mpegaudio"
2539 mp3on4_decoder_select="mpegaudio"
2540 mp3on4float_decoder_select="mpegaudio"
2541 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2542 mpc8_decoder_select="mpegaudiodsp"
2543 mpegvideo_decoder_select="mpegvideo"
2544 mpeg1video_decoder_select="mpegvideo"
2545 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2546 mpeg2video_decoder_select="mpegvideo"
2547 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2548 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2549 mpeg4_encoder_select="h263_encoder"
2550 msa1_decoder_select="mss34dsp"
2551 mscc_decoder_select="zlib"
2552 msmpeg4v1_decoder_select="h263_decoder"
2553 msmpeg4v2_decoder_select="h263_decoder"
2554 msmpeg4v2_encoder_select="h263_encoder"
2555 msmpeg4v3_decoder_select="h263_decoder"
2556 msmpeg4v3_encoder_select="h263_encoder"
2557 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2558 mts2_decoder_select="mss34dsp"
2559 mxpeg_decoder_select="mjpeg_decoder"
2560 nellymoser_decoder_select="mdct sinewin"
2561 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2562 nuv_decoder_select="idctdsp lzo"
2563 on2avc_decoder_select="mdct"
2564 opus_decoder_deps="swresample"
2565 opus_decoder_select="mdct15"
2566 opus_encoder_select="audio_frame_queue mdct15"
2567 png_decoder_select="zlib"
2568 png_encoder_select="llvidencdsp zlib"
2569 prores_decoder_select="blockdsp idctdsp"
2570 prores_encoder_select="fdctdsp"
2571 qcelp_decoder_select="lsp"
2572 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2573 ra_144_decoder_select="audiodsp"
2574 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2575 ralf_decoder_select="golomb"
2576 rawvideo_decoder_select="bswapdsp"
2577 rscc_decoder_select="zlib"
2578 rtjpeg_decoder_select="me_cmp"
2579 rv10_decoder_select="h263_decoder"
2580 rv10_encoder_select="h263_encoder"
2581 rv20_decoder_select="h263_decoder"
2582 rv20_encoder_select="h263_encoder"
2583 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2584 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2585 screenpresso_decoder_select="zlib"
2586 shorten_decoder_select="bswapdsp"
2587 sipr_decoder_select="lsp"
2588 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2589 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2590 sonic_decoder_select="golomb rangecoder"
2591 sonic_encoder_select="golomb rangecoder"
2592 sonic_ls_encoder_select="golomb rangecoder"
2593 sp5x_decoder_select="mjpeg_decoder"
2594 srgc_decoder_select="zlib"
2595 svq1_decoder_select="hpeldsp"
2596 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2597 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2598 svq3_decoder_suggest="zlib"
2599 tak_decoder_select="audiodsp"
2600 tdsc_decoder_select="zlib mjpeg_decoder"
2601 theora_decoder_select="vp3_decoder"
2602 thp_decoder_select="mjpeg_decoder"
2603 tiff_decoder_suggest="zlib lzma"
2604 tiff_encoder_suggest="zlib"
2605 truehd_decoder_select="mlp_parser"
2606 truehd_encoder_select="lpc"
2607 truemotion2_decoder_select="bswapdsp"
2608 truespeech_decoder_select="bswapdsp"
2609 tscc_decoder_select="zlib"
2610 twinvq_decoder_select="mdct lsp sinewin"
2611 txd_decoder_select="texturedsp"
2612 utvideo_decoder_select="bswapdsp llviddsp"
2613 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2614 vble_decoder_select="llviddsp"
2615 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2616 vc1_qsv_decoder_deps="libmfx"
2617 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2618 vc1image_decoder_select="vc1_decoder"
2619 vorbis_decoder_select="mdct"
2620 vorbis_encoder_select="mdct"
2621 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2622 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2623 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2624 vp6a_decoder_select="vp6_decoder"
2625 vp6f_decoder_select="vp6_decoder"
2626 vp7_decoder_select="h264pred videodsp vp8dsp"
2627 vp8_decoder_select="h264pred videodsp vp8dsp"
2628 vp9_decoder_select="videodsp vp9_parser"
2629 webp_decoder_select="vp8_decoder exif"
2630 wmalossless_decoder_select="llauddsp"
2631 wmapro_decoder_select="mdct sinewin wma_freqs"
2632 wmav1_decoder_select="mdct sinewin wma_freqs"
2633 wmav1_encoder_select="mdct sinewin wma_freqs"
2634 wmav2_decoder_select="mdct sinewin wma_freqs"
2635 wmav2_encoder_select="mdct sinewin wma_freqs"
2636 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2637 wmv1_decoder_select="h263_decoder"
2638 wmv1_encoder_select="h263_encoder"
2639 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2640 wmv2_encoder_select="h263_encoder wmv2dsp"
2641 wmv3_decoder_select="vc1_decoder"
2642 wmv3image_decoder_select="wmv3_decoder"
2643 xma1_decoder_select="wmapro_decoder"
2644 xma2_decoder_select="wmapro_decoder"
2645 zerocodec_decoder_select="zlib"
2646 zlib_decoder_select="zlib"
2647 zlib_encoder_select="zlib"
2648 zmbv_decoder_select="zlib"
2649 zmbv_encoder_select="zlib"
2650
2651 # hardware accelerators
2652 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2653 cuda_deps_any="libdl LoadLibrary"
2654 cuvid_deps="cuda"
2655 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2656 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2657 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2658 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2659 xvmc_deps="X11_extensions_XvMClib_h"
2660
2661 h263_vaapi_hwaccel_deps="vaapi"
2662 h263_vaapi_hwaccel_select="h263_decoder"
2663 h263_videotoolbox_hwaccel_deps="videotoolbox"
2664 h263_videotoolbox_hwaccel_select="h263_decoder"
2665 h264_cuvid_hwaccel_deps="cuda cuvid"
2666 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2667 h264_d3d11va_hwaccel_deps="d3d11va"
2668 h264_d3d11va_hwaccel_select="h264_decoder"
2669 h264_d3d11va2_hwaccel_deps="d3d11va"
2670 h264_d3d11va2_hwaccel_select="h264_decoder"
2671 h264_dxva2_hwaccel_deps="dxva2"
2672 h264_dxva2_hwaccel_select="h264_decoder"
2673 h264_mediacodec_hwaccel_deps="mediacodec"
2674 h264_mmal_hwaccel_deps="mmal"
2675 h264_qsv_hwaccel_deps="libmfx"
2676 h264_vaapi_hwaccel_deps="vaapi"
2677 h264_vaapi_hwaccel_select="h264_decoder"
2678 h264_vdpau_hwaccel_deps="vdpau"
2679 h264_vdpau_hwaccel_select="h264_decoder"
2680 h264_videotoolbox_hwaccel_deps="videotoolbox"
2681 h264_videotoolbox_hwaccel_select="h264_decoder"
2682 hevc_cuvid_hwaccel_deps="cuda cuvid"
2683 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2684 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2685 hevc_d3d11va_hwaccel_select="hevc_decoder"
2686 hevc_mediacodec_hwaccel_deps="mediacodec"
2687 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2688 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2689 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2690 hevc_dxva2_hwaccel_select="hevc_decoder"
2691 hevc_qsv_hwaccel_deps="libmfx"
2692 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2693 hevc_vaapi_hwaccel_select="hevc_decoder"
2694 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2695 hevc_vdpau_hwaccel_select="hevc_decoder"
2696 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2697 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2698 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2699 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2700 mpeg_xvmc_hwaccel_deps="xvmc"
2701 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2702 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2703 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2704 mpeg1_vdpau_hwaccel_deps="vdpau"
2705 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2706 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2707 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2708 mpeg1_xvmc_hwaccel_deps="xvmc"
2709 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2710 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2711 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2712 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2713 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2714 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2715 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2716 mpeg2_dxva2_hwaccel_deps="dxva2"
2717 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2718 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2719 mpeg2_mmal_hwaccel_deps="mmal"
2720 mpeg2_qsv_hwaccel_deps="libmfx"
2721 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2722 mpeg2_vaapi_hwaccel_deps="vaapi"
2723 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2724 mpeg2_vdpau_hwaccel_deps="vdpau"
2725 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2727 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2728 mpeg2_xvmc_hwaccel_deps="xvmc"
2729 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2730 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2731 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2732 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2733 mpeg4_mmal_hwaccel_deps="mmal"
2734 mpeg4_vaapi_hwaccel_deps="vaapi"
2735 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2736 mpeg4_vdpau_hwaccel_deps="vdpau"
2737 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2738 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2739 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2740 vc1_cuvid_hwaccel_deps="cuda cuvid"
2741 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2742 vc1_d3d11va_hwaccel_deps="d3d11va"
2743 vc1_d3d11va_hwaccel_select="vc1_decoder"
2744 vc1_d3d11va2_hwaccel_deps="d3d11va"
2745 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2746 vc1_dxva2_hwaccel_deps="dxva2"
2747 vc1_dxva2_hwaccel_select="vc1_decoder"
2748 vc1_mmal_hwaccel_deps="mmal"
2749 vc1_qsv_hwaccel_deps="libmfx"
2750 vc1_qsv_hwaccel_select="qsvdec_vc1"
2751 vc1_vaapi_hwaccel_deps="vaapi"
2752 vc1_vaapi_hwaccel_select="vc1_decoder"
2753 vc1_vdpau_hwaccel_deps="vdpau"
2754 vc1_vdpau_hwaccel_select="vc1_decoder"
2755 vp8_cuvid_hwaccel_deps="cuda cuvid"
2756 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2757 vp9_cuvid_hwaccel_deps="cuda cuvid"
2758 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2759 vp8_mediacodec_hwaccel_deps="mediacodec"
2760 vp8_qsv_hwaccel_deps="libmfx"
2761 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2762 vp9_d3d11va_hwaccel_select="vp9_decoder"
2763 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2764 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2765 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2766 vp9_dxva2_hwaccel_select="vp9_decoder"
2767 vp9_mediacodec_hwaccel_deps="mediacodec"
2768 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2769 vp9_vaapi_hwaccel_select="vp9_decoder"
2770 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2771 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2772 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2773 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2774 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2775
2776 # hardware-accelerated codecs
2777 omx_deps="libdl pthreads"
2778 omx_rpi_select="omx"
2779 qsvdec_select="qsv"
2780 qsvenc_select="qsv"
2781 vaapi_encode_deps="vaapi"
2782 v4l2_m2m_deps_any="linux_videodev2_h"
2783
2784 hwupload_cuda_filter_deps="cuda"
2785 scale_npp_filter_deps="cuda libnpp"
2786 scale_cuda_filter_deps="cuda_sdk"
2787 thumbnail_cuda_filter_deps="cuda_sdk"
2788
2789 nvenc_deps="cuda"
2790 nvenc_deps_any="libdl LoadLibrary"
2791 nvenc_encoder_deps="nvenc"
2792
2793 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2794 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2795 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2796 h264_cuvid_decoder_deps="cuda cuvid"
2797 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2798 h264_mediacodec_decoder_deps="mediacodec"
2799 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2800 h264_mmal_decoder_deps="mmal"
2801 h264_nvenc_encoder_deps="nvenc"
2802 h264_omx_encoder_deps="omx"
2803 h264_qsv_decoder_deps="libmfx"
2804 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2805 h264_qsv_encoder_deps="libmfx"
2806 h264_qsv_encoder_select="qsvenc"
2807 h264_rkmpp_decoder_deps="rkmpp"
2808 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2809 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2810 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2811 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2812 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2813 hevc_cuvid_decoder_deps="cuda cuvid"
2814 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2815 hevc_mediacodec_decoder_deps="mediacodec"
2816 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2817 hevc_nvenc_encoder_deps="nvenc"
2818 hevc_qsv_decoder_deps="libmfx"
2819 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2820 hevc_qsv_encoder_deps="libmfx"
2821 hevc_qsv_encoder_select="hevcparse qsvenc"
2822 hevc_rkmpp_decoder_deps="rkmpp"
2823 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2824 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2825 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2826 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2827 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2828 mjpeg_cuvid_decoder_deps="cuda cuvid"
2829 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2830 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2831 mpeg1_cuvid_decoder_deps="cuda cuvid"
2832 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2833 mpeg2_crystalhd_decoder_select="crystalhd"
2834 mpeg2_cuvid_decoder_deps="cuda cuvid"
2835 mpeg2_mmal_decoder_deps="mmal"
2836 mpeg2_mediacodec_decoder_deps="mediacodec"
2837 mpeg2_qsv_decoder_deps="libmfx"
2838 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2839 mpeg2_qsv_encoder_deps="libmfx"
2840 mpeg2_qsv_encoder_select="qsvenc"
2841 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2842 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2843 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2844 mpeg4_crystalhd_decoder_select="crystalhd"
2845 mpeg4_cuvid_decoder_deps="cuda cuvid"
2846 mpeg4_mediacodec_decoder_deps="mediacodec"
2847 mpeg4_mmal_decoder_deps="mmal"
2848 mpeg4_omx_encoder_deps="omx"
2849 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2850 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2851 msmpeg4_crystalhd_decoder_select="crystalhd"
2852 nvenc_h264_encoder_select="h264_nvenc_encoder"
2853 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2854 vc1_crystalhd_decoder_select="crystalhd"
2855 vc1_cuvid_decoder_deps="cuda cuvid"
2856 vc1_mmal_decoder_deps="mmal"
2857 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2858 vp8_cuvid_decoder_deps="cuda cuvid"
2859 vp8_mediacodec_decoder_deps="mediacodec"
2860 vp8_qsv_decoder_deps="libmfx"
2861 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2862 vp8_rkmpp_decoder_deps="rkmpp"
2863 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2864 vp8_vaapi_encoder_select="vaapi_encode"
2865 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2866 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2867 vp9_cuvid_decoder_deps="cuda cuvid"
2868 vp9_mediacodec_decoder_deps="mediacodec"
2869 vp9_rkmpp_decoder_deps="rkmpp"
2870 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2871 vp9_vaapi_encoder_select="vaapi_encode"
2872 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2873 wmv3_crystalhd_decoder_select="crystalhd"
2874
2875 # parsers
2876 h264_parser_select="golomb h264dsp h264parse"
2877 hevc_parser_select="hevcparse"
2878 mpegaudio_parser_select="mpegaudioheader"
2879 mpegvideo_parser_select="mpegvideo"
2880 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2881 vc1_parser_select="vc1dsp"
2882
2883 # bitstream_filters
2884 h264_metadata_bsf_select="cbs_h264"
2885 h264_redundant_pps_bsf_select="cbs_h264"
2886 hevc_metadata_bsf_select="cbs_h265"
2887 mjpeg2jpeg_bsf_select="jpegtables"
2888 mpeg2_metadata_bsf_select="cbs_mpeg2"
2889 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2890
2891 # external libraries
2892 aac_at_decoder_deps="audiotoolbox"
2893 ac3_at_decoder_deps="audiotoolbox"
2894 ac3_at_decoder_select="ac3_parser"
2895 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2896 alac_at_decoder_deps="audiotoolbox"
2897 amr_nb_at_decoder_deps="audiotoolbox"
2898 avisynth_deps_any="libdl LoadLibrary"
2899 avisynth_demuxer_deps="avisynth"
2900 avisynth_demuxer_select="riffdec"
2901 eac3_at_decoder_deps="audiotoolbox"
2902 eac3_at_decoder_select="ac3_parser"
2903 gsm_ms_at_decoder_deps="audiotoolbox"
2904 ilbc_at_decoder_deps="audiotoolbox"
2905 mp1_at_decoder_deps="audiotoolbox"
2906 mp2_at_decoder_deps="audiotoolbox"
2907 mp3_at_decoder_deps="audiotoolbox"
2908 mp1_at_decoder_select="mpegaudioheader"
2909 mp2_at_decoder_select="mpegaudioheader"
2910 mp3_at_decoder_select="mpegaudioheader"
2911 pcm_alaw_at_decoder_deps="audiotoolbox"
2912 pcm_mulaw_at_decoder_deps="audiotoolbox"
2913 qdmc_at_decoder_deps="audiotoolbox"
2914 qdm2_at_decoder_deps="audiotoolbox"
2915 aac_at_encoder_deps="audiotoolbox"
2916 aac_at_encoder_select="audio_frame_queue"
2917 alac_at_encoder_deps="audiotoolbox"
2918 alac_at_encoder_select="audio_frame_queue"
2919 ilbc_at_encoder_deps="audiotoolbox"
2920 ilbc_at_encoder_select="audio_frame_queue"
2921 pcm_alaw_at_encoder_deps="audiotoolbox"
2922 pcm_alaw_at_encoder_select="audio_frame_queue"
2923 pcm_mulaw_at_encoder_deps="audiotoolbox"
2924 pcm_mulaw_at_encoder_select="audio_frame_queue"
2925 chromaprint_muxer_deps="chromaprint"
2926 h264_videotoolbox_encoder_deps="pthreads"
2927 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2928 libcelt_decoder_deps="libcelt"
2929 libfdk_aac_decoder_deps="libfdk_aac"
2930 libfdk_aac_encoder_deps="libfdk_aac"
2931 libfdk_aac_encoder_select="audio_frame_queue"
2932 libgme_demuxer_deps="libgme"
2933 libgsm_decoder_deps="libgsm"
2934 libgsm_encoder_deps="libgsm"
2935 libgsm_ms_decoder_deps="libgsm"
2936 libgsm_ms_encoder_deps="libgsm"
2937 libilbc_decoder_deps="libilbc"
2938 libilbc_encoder_deps="libilbc"
2939 libkvazaar_encoder_deps="libkvazaar"
2940 libmodplug_demuxer_deps="libmodplug"
2941 libmp3lame_encoder_deps="libmp3lame"
2942 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2943 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2944 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2945 libopencore_amrnb_encoder_select="audio_frame_queue"
2946 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2947 libopenh264_decoder_deps="libopenh264"
2948 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2949 libopenh264_encoder_deps="libopenh264"
2950 libopenjpeg_decoder_deps="libopenjpeg"
2951 libopenjpeg_encoder_deps="libopenjpeg"
2952 libopenmpt_demuxer_deps="libopenmpt"
2953 libopus_decoder_deps="libopus"
2954 libopus_encoder_deps="libopus"
2955 libopus_encoder_select="audio_frame_queue"
2956 librsvg_decoder_deps="librsvg"
2957 libshine_encoder_deps="libshine"
2958 libshine_encoder_select="audio_frame_queue"
2959 libspeex_decoder_deps="libspeex"
2960 libspeex_encoder_deps="libspeex"
2961 libspeex_encoder_select="audio_frame_queue"
2962 libtheora_encoder_deps="libtheora"
2963 libtwolame_encoder_deps="libtwolame"
2964 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2965 libvorbis_decoder_deps="libvorbis"
2966 libvorbis_encoder_deps="libvorbis libvorbisenc"
2967 libvorbis_encoder_select="audio_frame_queue"
2968 libvpx_vp8_decoder_deps="libvpx"
2969 libvpx_vp8_encoder_deps="libvpx"
2970 libvpx_vp9_decoder_deps="libvpx"
2971 libvpx_vp9_encoder_deps="libvpx"
2972 libwavpack_encoder_deps="libwavpack"
2973 libwavpack_encoder_select="audio_frame_queue"
2974 libwebp_encoder_deps="libwebp"
2975 libwebp_anim_encoder_deps="libwebp"
2976 libx262_encoder_deps="libx262"
2977 libx264_encoder_deps="libx264"
2978 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2979 libx264rgb_encoder_select="libx264_encoder"
2980 libx265_encoder_deps="libx265"
2981 libxavs_encoder_deps="libxavs"
2982 libxvid_encoder_deps="libxvid"
2983 libzvbi_teletext_decoder_deps="libzvbi"
2984 videotoolbox_suggest="coreservices"
2985 videotoolbox_deps="corefoundation coremedia corevideo"
2986 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2987
2988 # demuxers / muxers
2989 ac3_demuxer_select="ac3_parser"
2990 aiff_muxer_select="iso_media"
2991 asf_demuxer_select="riffdec"
2992 asf_o_demuxer_select="riffdec"
2993 asf_muxer_select="riffenc"
2994 asf_stream_muxer_select="asf_muxer"
2995 avi_demuxer_select="iso_media riffdec exif"
2996 avi_muxer_select="riffenc"
2997 caf_demuxer_select="iso_media riffdec"
2998 caf_muxer_select="iso_media"
2999 dash_muxer_select="mp4_muxer"
3000 dash_demuxer_deps="libxml2"
3001 dirac_demuxer_select="dirac_parser"
3002 dts_demuxer_select="dca_parser"
3003 dtshd_demuxer_select="dca_parser"
3004 dv_demuxer_select="dvprofile"
3005 dv_muxer_select="dvprofile"
3006 dxa_demuxer_select="riffdec"
3007 eac3_demuxer_select="ac3_parser"
3008 f4v_muxer_select="mov_muxer"
3009 fifo_muxer_deps="threads"
3010 flac_demuxer_select="flac_parser"
3011 hds_muxer_select="flv_muxer"
3012 hls_muxer_select="mpegts_muxer"
3013 hls_muxer_suggest="gcrypt openssl"
3014 image2_alias_pix_demuxer_select="image2_demuxer"
3015 image2_brender_pix_demuxer_select="image2_demuxer"
3016 ipod_muxer_select="mov_muxer"
3017 ismv_muxer_select="mov_muxer"
3018 matroska_audio_muxer_select="matroska_muxer"
3019 matroska_demuxer_select="iso_media riffdec"
3020 matroska_demuxer_suggest="bzlib lzo zlib"
3021 matroska_muxer_select="iso_media riffenc"
3022 mmf_muxer_select="riffenc"
3023 mov_demuxer_select="iso_media riffdec"
3024 mov_demuxer_suggest="zlib"
3025 mov_muxer_select="iso_media riffenc rtpenc_chain"
3026 mp3_demuxer_select="mpegaudio_parser"
3027 mp3_muxer_select="mpegaudioheader"
3028 mp4_muxer_select="mov_muxer"
3029 mpegts_demuxer_select="iso_media"
3030 mpegts_muxer_select="adts_muxer latm_muxer"
3031 mpegtsraw_demuxer_select="mpegts_demuxer"
3032 mxf_d10_muxer_select="mxf_muxer"
3033 mxf_opatom_muxer_select="mxf_muxer"
3034 nut_muxer_select="riffenc"
3035 nuv_demuxer_select="riffdec"
3036 oga_muxer_select="ogg_muxer"
3037 ogg_demuxer_select="dirac_parse"
3038 ogv_muxer_select="ogg_muxer"
3039 opus_muxer_select="ogg_muxer"
3040 psp_muxer_select="mov_muxer"
3041 rtp_demuxer_select="sdp_demuxer"
3042 rtp_muxer_select="golomb"
3043 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3044 rtsp_demuxer_select="http_protocol rtpdec"
3045 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3046 sap_demuxer_select="sdp_demuxer"
3047 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3048 sdp_demuxer_select="rtpdec"
3049 smoothstreaming_muxer_select="ismv_muxer"
3050 spdif_muxer_select="aac_parser"
3051 spx_muxer_select="ogg_muxer"
3052 swf_demuxer_suggest="zlib"
3053 tak_demuxer_select="tak_parser"
3054 tg2_muxer_select="mov_muxer"
3055 tgp_muxer_select="mov_muxer"
3056 vobsub_demuxer_select="mpegps_demuxer"
3057 w64_demuxer_select="wav_demuxer"
3058 w64_muxer_select="wav_muxer"
3059 wav_demuxer_select="riffdec"
3060 wav_muxer_select="riffenc"
3061 webm_muxer_select="iso_media riffenc"
3062 webm_dash_manifest_demuxer_select="matroska_demuxer"
3063 wtv_demuxer_select="mpegts_demuxer riffdec"
3064 wtv_muxer_select="mpegts_muxer riffenc"
3065 xmv_demuxer_select="riffdec"
3066 xwma_demuxer_select="riffdec"
3067
3068 # indevs / outdevs
3069 alsa_indev_deps="alsa"
3070 alsa_outdev_deps="alsa"
3071 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3072 avfoundation_indev_suggest="coregraphics applicationservices"
3073 avfoundation_indev_extralibs="-framework Foundation"
3074 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3075 caca_outdev_deps="libcaca"
3076 decklink_deps_any="libdl LoadLibrary"
3077 decklink_indev_deps="decklink threads"
3078 decklink_indev_extralibs="-lstdc++"
3079 decklink_outdev_deps="decklink threads"
3080 decklink_outdev_extralibs="-lstdc++"
3081 libndi_newtek_indev_deps="libndi_newtek"
3082 libndi_newtek_indev_extralibs="-lndi"
3083 libndi_newtek_outdev_deps="libndi_newtek"
3084 libndi_newtek_outdev_extralibs="-lndi"
3085 dshow_indev_deps="IBaseFilter"
3086 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3087 fbdev_indev_deps="linux_fb_h"
3088 fbdev_outdev_deps="linux_fb_h"
3089 gdigrab_indev_deps="CreateDIBSection"
3090 gdigrab_indev_extralibs="-lgdi32"
3091 gdigrab_indev_select="bmp_decoder"
3092 iec61883_indev_deps="libiec61883"
3093 jack_indev_deps="libjack"
3094 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3095 kmsgrab_indev_deps="libdrm"
3096 lavfi_indev_deps="avfilter"
3097 libcdio_indev_deps="libcdio"
3098 libdc1394_indev_deps="libdc1394"
3099 openal_indev_deps="openal"
3100 opengl_outdev_deps="opengl"
3101 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3102 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3103 pulse_indev_deps="libpulse"
3104 pulse_outdev_deps="libpulse"
3105 sdl2_outdev_deps="sdl2"
3106 sndio_indev_deps="sndio"
3107 sndio_outdev_deps="sndio"
3108 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3109 v4l2_indev_suggest="libv4l2"
3110 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3111 v4l2_outdev_suggest="libv4l2"
3112 vfwcap_indev_deps="vfw32 vfwcap_defines"
3113 xcbgrab_indev_deps="libxcb"
3114 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3115 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3116 xv_outdev_extralibs="-lXv -lX11 -lXext"
3117
3118 # protocols
3119 async_protocol_deps="threads"
3120 bluray_protocol_deps="libbluray"
3121 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3122 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3123 ffrtmpcrypt_protocol_select="tcp_protocol"
3124 ffrtmphttp_protocol_conflict="librtmp_protocol"
3125 ffrtmphttp_protocol_select="http_protocol"
3126 ftp_protocol_select="tcp_protocol"
3127 gopher_protocol_select="network"
3128 http_protocol_select="tcp_protocol"
3129 http_protocol_suggest="zlib"
3130 httpproxy_protocol_select="tcp_protocol"
3131 httpproxy_protocol_suggest="zlib"
3132 https_protocol_select="tls_protocol"
3133 https_protocol_suggest="zlib"
3134 icecast_protocol_select="http_protocol"
3135 librtmp_protocol_deps="librtmp"
3136 librtmpe_protocol_deps="librtmp"
3137 librtmps_protocol_deps="librtmp"
3138 librtmpt_protocol_deps="librtmp"
3139 librtmpte_protocol_deps="librtmp"
3140 libsmbclient_protocol_deps="libsmbclient gplv3"
3141 libssh_protocol_deps="libssh"
3142 mmsh_protocol_select="http_protocol"
3143 mmst_protocol_select="network"
3144 rtmp_protocol_conflict="librtmp_protocol"
3145 rtmp_protocol_select="tcp_protocol"
3146 rtmp_protocol_suggest="zlib"
3147 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3148 rtmpe_protocol_suggest="zlib"
3149 rtmps_protocol_conflict="librtmp_protocol"
3150 rtmps_protocol_select="tls_protocol"
3151 rtmps_protocol_suggest="zlib"
3152 rtmpt_protocol_select="ffrtmphttp_protocol"
3153 rtmpt_protocol_suggest="zlib"
3154 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3155 rtmpte_protocol_suggest="zlib"
3156 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3157 rtmpts_protocol_suggest="zlib"
3158 rtp_protocol_select="udp_protocol"
3159 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3160 sctp_protocol_select="network"
3161 srtp_protocol_select="rtp_protocol srtp"
3162 tcp_protocol_select="network"
3163 tls_gnutls_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol"
3164 tls_gnutls_protocol_deps="gnutls"
3165 tls_gnutls_protocol_select="tcp_protocol"
3166 tls_openssl_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol"
3167 tls_openssl_protocol_deps="openssl"
3168 tls_openssl_protocol_select="tcp_protocol"
3169 tls_schannel_protocol_deps="schannel"
3170 tls_schannel_protocol_select="tcp_protocol"
3171 tls_securetransport_protocol_deps="securetransport"
3172 tls_securetransport_protocol_select="tcp_protocol"
3173 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3174 udp_protocol_select="network"
3175 udplite_protocol_select="network"
3176 unix_protocol_deps="sys_un_h"
3177 unix_protocol_select="network"
3178
3179 # filters
3180 afftfilt_filter_deps="avcodec"
3181 afftfilt_filter_select="fft"
3182 afir_filter_deps="avcodec"
3183 afir_filter_select="fft"
3184 amovie_filter_deps="avcodec avformat"
3185 aresample_filter_deps="swresample"
3186 ass_filter_deps="libass"
3187 atempo_filter_deps="avcodec"
3188 atempo_filter_select="rdft"
3189 azmq_filter_deps="libzmq"
3190 blackframe_filter_deps="gpl"
3191 boxblur_filter_deps="gpl"
3192 bs2b_filter_deps="libbs2b"
3193 colormatrix_filter_deps="gpl"
3194 coreimage_filter_deps="coreimage appkit"
3195 coreimage_filter_extralibs="-framework OpenGL"
3196 coreimagesrc_filter_deps="coreimage appkit"
3197 coreimagesrc_filter_extralibs="-framework OpenGL"
3198 cover_rect_filter_deps="avcodec avformat gpl"
3199 cropdetect_filter_deps="gpl"
3200 deinterlace_qsv_filter_deps="libmfx"
3201 deinterlace_vaapi_filter_deps="vaapi"
3202 delogo_filter_deps="gpl"
3203 deshake_filter_select="pixelutils"
3204 deshake_filter_suggest="opencl"
3205 drawtext_filter_deps="libfreetype"
3206 drawtext_filter_suggest="libfontconfig libfribidi"
3207 elbg_filter_deps="avcodec"
3208 eq_filter_deps="gpl"
3209 fftfilt_filter_deps="avcodec"
3210 fftfilt_filter_select="rdft"
3211 find_rect_filter_deps="avcodec avformat gpl"
3212 firequalizer_filter_deps="avcodec"
3213 firequalizer_filter_select="rdft"
3214 flite_filter_deps="libflite"
3215 framerate_filter_select="pixelutils"
3216 frei0r_filter_deps="frei0r libdl"
3217 frei0r_src_filter_deps="frei0r libdl"
3218 fspp_filter_deps="gpl"
3219 geq_filter_deps="gpl"
3220 histeq_filter_deps="gpl"
3221 hqdn3d_filter_deps="gpl"
3222 interlace_filter_deps="gpl"
3223 kerndeint_filter_deps="gpl"
3224 ladspa_filter_deps="ladspa libdl"
3225 mcdeint_filter_deps="avcodec gpl"
3226 movie_filter_deps="avcodec avformat"
3227 mpdecimate_filter_deps="gpl"
3228 mpdecimate_filter_select="pixelutils"
3229 mptestsrc_filter_deps="gpl"
3230 negate_filter_deps="lut_filter"
3231 nnedi_filter_deps="gpl"
3232 ocr_filter_deps="libtesseract"
3233 ocv_filter_deps="libopencv"
3234 owdenoise_filter_deps="gpl"
3235 pan_filter_deps="swresample"
3236 perspective_filter_deps="gpl"
3237 phase_filter_deps="gpl"
3238 pp7_filter_deps="gpl"
3239 pp_filter_deps="gpl postproc"
3240 pullup_filter_deps="gpl"
3241 removelogo_filter_deps="avcodec avformat swscale"
3242 repeatfields_filter_deps="gpl"
3243 resample_filter_deps="avresample"
3244 rubberband_filter_deps="librubberband"
3245 sab_filter_deps="gpl swscale"
3246 scale2ref_filter_deps="swscale"
3247 scale_filter_deps="swscale"
3248 scale_qsv_filter_deps="libmfx"
3249 select_filter_select="pixelutils"
3250 showcqt_filter_deps="avcodec avformat swscale"
3251 showcqt_filter_suggest="libfontconfig libfreetype"
3252 showcqt_filter_select="fft"
3253 showfreqs_filter_deps="avcodec"
3254 showfreqs_filter_select="fft"
3255 showspectrum_filter_deps="avcodec"
3256 showspectrum_filter_select="fft"
3257 showspectrumpic_filter_deps="avcodec"
3258 showspectrumpic_filter_select="fft"
3259 signature_filter_deps="gpl avcodec avformat"
3260 smartblur_filter_deps="gpl swscale"
3261 sofalizer_filter_deps="libmysofa avcodec"
3262 sofalizer_filter_select="fft"
3263 spectrumsynth_filter_deps="avcodec"
3264 spectrumsynth_filter_select="fft"
3265 spp_filter_deps="gpl avcodec"
3266 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3267 stereo3d_filter_deps="gpl"
3268 subtitles_filter_deps="avformat avcodec libass"
3269 super2xsai_filter_deps="gpl"
3270 pixfmts_super2xsai_test_deps="super2xsai_filter"
3271 tinterlace_filter_deps="gpl"
3272 tinterlace_merge_test_deps="tinterlace_filter"
3273 tinterlace_pad_test_deps="tinterlace_filter"
3274 tonemap_filter_deps="const_nan"
3275 uspp_filter_deps="gpl avcodec"
3276 unsharp_filter_suggest="opencl"
3277 vaguedenoiser_filter_deps="gpl"
3278 vidstabdetect_filter_deps="libvidstab"
3279 vidstabtransform_filter_deps="libvidstab"
3280 libvmaf_filter_deps="libvmaf"
3281 zmq_filter_deps="libzmq"
3282 zoompan_filter_deps="swscale"
3283 zscale_filter_deps="libzimg const_nan"
3284 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3285
3286 # examples
3287 avio_dir_cmd_deps="avformat avutil"
3288 avio_reading_deps="avformat avcodec avutil"
3289 decode_audio_example_deps="avcodec avutil"
3290 decode_video_example_deps="avcodec avutil"
3291 demuxing_decoding_example_deps="avcodec avformat avutil"
3292 encode_audio_example_deps="avcodec avutil"
3293 encode_video_example_deps="avcodec avutil"
3294 extract_mvs_example_deps="avcodec avformat avutil"
3295 filter_audio_example_deps="avfilter avutil"
3296 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3297 filtering_video_example_deps="avfilter avcodec avformat avutil"
3298 http_multiclient_example_deps="avformat avutil fork"
3299 hw_decode_example_deps="avcodec avformat avutil"
3300 metadata_example_deps="avformat avutil"
3301 muxing_example_deps="avcodec avformat avutil swscale"
3302 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3303 remuxing_example_deps="avcodec avformat avutil"
3304 resampling_audio_example_deps="avutil swresample"
3305 scaling_video_example_deps="avutil swscale"
3306 transcode_aac_example_deps="avcodec avformat swresample"
3307 transcoding_example_deps="avfilter avcodec avformat avutil"
3308
3309 # EXTRALIBS_LIST
3310 cpu_init_extralibs="pthreads_extralibs"
3311 cws2fws_extralibs="zlib_extralibs"
3312
3313 # libraries, in linking order
3314 avcodec_deps="avutil"
3315 avcodec_suggest="libm"
3316 avcodec_select="null_bsf"
3317 avdevice_deps="avformat avcodec avutil"
3318 avdevice_suggest="libm"
3319 avfilter_deps="avutil"
3320 avfilter_suggest="libm"
3321 avformat_deps="avcodec avutil"
3322 avformat_suggest="libm network zlib"
3323 avresample_deps="avutil"
3324 avresample_suggest="libm"
3325 avutil_suggest="clock_gettime libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3326 postproc_deps="avutil gpl"
3327 postproc_suggest="libm"
3328 swresample_deps="avutil"
3329 swresample_suggest="libm libsoxr"
3330 swscale_deps="avutil"
3331 swscale_suggest="libm"
3332
3333 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3334 avfilter_extralibs="pthreads_extralibs"
3335 avutil_extralibs="nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3336
3337 # programs
3338 ffmpeg_deps="avcodec avfilter avformat swresample"
3339 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3340                null_filter
3341                trim_filter"
3342 ffmpeg_suggest="ole32 psapi shell32"
3343 ffplay_deps="avcodec avformat swscale swresample sdl2"
3344 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3345 ffplay_suggest="shell32"
3346 ffprobe_deps="avcodec avformat"
3347 ffprobe_suggest="shell32"
3348 ffserver_deps="avformat fork sarestart"
3349 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3350
3351 # documentation
3352 podpages_deps="perl"
3353 manpages_deps="perl pod2man"
3354 htmlpages_deps="perl"
3355 htmlpages_deps_any="makeinfo_html texi2html"
3356 txtpages_deps="perl makeinfo"
3357 doc_deps_any="manpages htmlpages podpages txtpages"
3358
3359 # default parameters
3360
3361 logfile="ffbuild/config.log"
3362
3363 # installation paths
3364 prefix_default="/usr/local"
3365 bindir_default='${prefix}/bin'
3366 datadir_default='${prefix}/share/ffmpeg'
3367 docdir_default='${prefix}/share/doc/ffmpeg'
3368 incdir_default='${prefix}/include'
3369 libdir_default='${prefix}/lib'
3370 mandir_default='${prefix}/share/man'
3371
3372 # toolchain
3373 ar_default="ar"
3374 cc_default="gcc"
3375 cxx_default="g++"
3376 host_cc_default="gcc"
3377 doxygen_default="doxygen"
3378 install="install"
3379 ln_s_default="ln -s -f"
3380 nm_default="nm -g"
3381 pkg_config_default=pkg-config
3382 ranlib_default="ranlib"
3383 strip_default="strip"
3384 version_script='--version-script'
3385 x86asmexe_default="nasm"
3386 windres_default="windres"
3387 nvcc_default="nvcc"
3388 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3389 striptype="direct"
3390
3391 # OS
3392 target_os_default=$(tolower $(uname -s))
3393 host_os=$target_os_default
3394
3395 # machine
3396 if test "$target_os_default" = aix; then
3397     arch_default=$(uname -p)
3398     strip_default="strip -X32_64"
3399 else
3400     arch_default=$(uname -m)
3401 fi
3402 cpu="generic"
3403 intrinsics="none"
3404
3405 # configurable options
3406 enable $PROGRAM_LIST
3407 enable $DOCUMENT_LIST
3408 enable $EXAMPLE_LIST
3409 enable $(filter_out avresample $LIBRARY_LIST)
3410 enable stripping
3411
3412 enable asm
3413 enable debug
3414 enable doc
3415 enable faan faandct faanidct
3416 enable optimizations
3417 enable runtime_cpudetect
3418 enable safe_bitstream_reader
3419 enable static
3420 enable swscale_alpha
3421 enable valgrind_backtrace
3422
3423 sws_max_filter_size_default=256
3424 set_default sws_max_filter_size
3425
3426 # internal components are enabled by default
3427 enable $EXTRALIBS_LIST
3428
3429 # Avoid external, non-system, libraries getting enabled by dependency resolution
3430 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3431
3432 # build settings
3433 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3434 LIBPREF="lib"
3435 LIBSUF=".a"
3436 FULLNAME='$(NAME)$(BUILDSUF)'
3437 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3438 SLIBPREF="lib"
3439 SLIBSUF=".so"
3440 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3441 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3442 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3443 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3444 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3445 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3446 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3447
3448 asflags_filter=echo
3449 cflags_filter=echo
3450 ldflags_filter=echo
3451
3452 AS_C='-c'
3453 AS_O='-o $@'
3454 CC_C='-c'
3455 CC_E='-E -o $@'
3456 CC_O='-o $@'
3457 CXX_C='-c'
3458 CXX_O='-o $@'
3459 OBJCC_C='-c'
3460 OBJCC_E='-E -o $@'
3461 OBJCC_O='-o $@'
3462 X86ASM_O='-o $@'
3463 LD_O='-o $@'
3464 LD_LIB='-l%'
3465 LD_PATH='-L'
3466 HOSTCC_C='-c'
3467 HOSTCC_E='-E -o $@'
3468 HOSTCC_O='-o $@'
3469 HOSTLD_O='-o $@'
3470 NVCC_C='-c'
3471 NVCC_O='-o $@'
3472
3473 host_extralibs='-lm'
3474 host_cflags_filter=echo
3475 host_ldflags_filter=echo
3476
3477 target_path='$(CURDIR)'
3478
3479 # since the object filename is not given with the -MM flag, the compiler
3480 # is only able to print the basename, and we must add the path ourselves
3481 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3482 DEPFLAGS='-MM'
3483
3484 mkdir -p ffbuild
3485
3486 # find source path
3487 if test -f configure; then
3488     source_path=.
3489 else
3490     source_path=$(cd $(dirname "$0"); pwd)
3491     case "$source_path" in
3492         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3493     esac
3494     test -e "$source_path/config.h" &&
3495         die "Out of tree builds are impossible with config.h in source dir."
3496 fi
3497
3498 for v in "$@"; do
3499     r=${v#*=}
3500     l=${v%"$r"}
3501     r=$(sh_quote "$r")
3502     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3503 done
3504
3505 find_things(){
3506     thing=$1
3507     pattern=$2
3508     file=$source_path/$3
3509     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3510 }
3511
3512 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3513 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3514 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3515 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3516 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3517 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3518 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3519 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3520 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3521
3522 find_things_extern(){
3523     thing=$1
3524     pattern=$2
3525     file=$source_path/$3
3526     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3527 }
3528
3529 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3530 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3531
3532 AVCODEC_COMPONENTS_LIST="
3533     $BSF_LIST
3534     $DECODER_LIST
3535     $ENCODER_LIST
3536     $HWACCEL_LIST
3537     $PARSER_LIST
3538 "
3539
3540 AVDEVICE_COMPONENTS_LIST="
3541     $INDEV_LIST
3542     $OUTDEV_LIST
3543 "
3544
3545 AVFILTER_COMPONENTS_LIST="
3546     $FILTER_LIST
3547 "
3548
3549 AVFORMAT_COMPONENTS_LIST="
3550     $DEMUXER_LIST
3551     $MUXER_LIST
3552     $PROTOCOL_LIST
3553 "
3554
3555 ALL_COMPONENTS="
3556     $AVCODEC_COMPONENTS_LIST
3557     $AVDEVICE_COMPONENTS_LIST
3558     $AVFILTER_COMPONENTS_LIST
3559     $AVFORMAT_COMPONENTS_LIST
3560 "
3561
3562 for n in $COMPONENT_LIST; do
3563     v=$(toupper ${n%s})_LIST
3564     eval enable \$$v
3565     eval ${n}_if_any="\$$v"
3566 done
3567
3568 enable $ARCH_EXT_LIST
3569
3570 die_unknown(){
3571     echo "Unknown option \"$1\"."
3572     echo "See $0 --help for available options."
3573     exit 1
3574 }
3575
3576 print_in_columns() {
3577     cols=$(expr $ncols / 24)
3578     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3579 }
3580
3581 show_list() {
3582     suffix=_$1
3583     shift
3584     echo $* | sed s/$suffix//g | print_in_columns
3585     exit 0
3586 }
3587
3588 rand_list(){
3589     IFS=', '
3590     set -- $*
3591     unset IFS
3592     for thing; do
3593         comp=${thing%:*}
3594         prob=${thing#$comp}
3595         prob=${prob#:}
3596         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3597         echo "prob ${prob:-0.5}"
3598         printf '%s\n' $comp
3599     done
3600 }
3601
3602 do_random(){
3603     action=$1
3604     shift
3605     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3606     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3607 }
3608
3609 for opt do
3610     optval="${opt#*=}"
3611     case "$opt" in
3612         --extra-ldflags=*)
3613             add_ldflags $optval
3614         ;;
3615         --extra-ldexeflags=*)
3616             add_ldexeflags $optval
3617         ;;
3618         --extra-ldlibflags=*)
3619             add_ldlibflags $optval
3620         ;;
3621         --extra-libs=*)
3622             add_extralibs $optval
3623         ;;
3624         --disable-devices)
3625             disable $INDEV_LIST $OUTDEV_LIST
3626         ;;
3627         --enable-debug=*)
3628             debuglevel="$optval"
3629         ;;
3630         --disable-programs)
3631             disable $PROGRAM_LIST
3632         ;;
3633         --disable-everything)
3634             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3635         ;;
3636         --disable-all)
3637             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3638             disable $LIBRARY_LIST $PROGRAM_LIST doc
3639             enable avutil
3640         ;;
3641         --enable-random|--disable-random)
3642             action=${opt%%-random}
3643             do_random ${action#--} $COMPONENT_LIST
3644         ;;
3645         --enable-random=*|--disable-random=*)
3646             action=${opt%%-random=*}
3647             do_random ${action#--} $optval
3648         ;;
3649         --enable-sdl)
3650             enable sdl2
3651         ;;
3652         --enable-*=*|--disable-*=*)
3653             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3654             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3655             eval list=\$$(toupper $thing)_LIST
3656             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3657             list=$(filter "$name" $list)
3658             [ "$list" = "" ] && warn "Option $opt did not match anything"
3659             $action $list
3660         ;;
3661         --enable-yasm|--disable-yasm)
3662             warn "The ${opt} option is only provided for compatibility and will be\n"\
3663                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3664             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3665         ;;
3666         --yasmexe=*)
3667             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3668                  "removed in the future. Use --x86asmexe instead."
3669             x86asmexe="$optval"
3670         ;;
3671         --enable-?*|--disable-?*)
3672             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3673             if is_in $option $COMPONENT_LIST; then
3674                 test $action = disable && action=unset
3675                 eval $action \$$(toupper ${option%s})_LIST
3676             elif is_in $option $CMDLINE_SELECT; then
3677                 $action $option
3678             else
3679                 die_unknown $opt
3680             fi
3681         ;;
3682         --list-*)
3683             NAME="${opt#--list-}"
3684             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3685             NAME=${NAME%s}
3686             eval show_list $NAME \$$(toupper $NAME)_LIST
3687         ;;
3688         --help|-h) show_help
3689         ;;
3690         --quiet|-q) quiet=yes
3691         ;;
3692         --fatal-warnings) enable fatal_warnings
3693         ;;
3694         --libfuzzer=*)
3695             libfuzzer_path="$optval"
3696         ;;
3697         *)
3698             optname="${opt%%=*}"
3699             optname="${optname#--}"
3700             optname=$(echo "$optname" | sed 's/-/_/g')
3701             if is_in $optname $CMDLINE_SET; then
3702                 eval $optname='$optval'
3703             elif is_in $optname $CMDLINE_APPEND; then
3704                 append $optname "$optval"
3705             else
3706                 die_unknown $opt
3707             fi
3708         ;;
3709     esac
3710 done
3711
3712 for e in $env; do
3713     eval "export $e"
3714 done
3715
3716 if disabled autodetect; then
3717
3718     # Unless iconv is explicitely disabled by the user, we still want to probe
3719     # for the iconv from the libc.
3720     disabled iconv || enable libc_iconv
3721
3722     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3723     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3724 fi
3725 # Mark specifically enabled, but normally autodetected libraries as requested.
3726 for lib in $AUTODETECT_LIBS; do
3727     enabled $lib && request $lib
3728 done
3729 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3730 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3731 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3732
3733 disabled logging && logfile=/dev/null
3734
3735 die_license_disabled() {
3736     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3737 }
3738
3739 die_license_disabled_gpl() {
3740     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3741 }
3742
3743 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3744 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3745
3746 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3747 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3748
3749 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3750
3751 # Disable all the library-specific components if the library itself
3752 # is disabled, see AVCODEC_LIST and following _LIST variables.
3753
3754 disable_components(){
3755     disabled ${1} && disable $(
3756         eval components="\$$(toupper ${1})_COMPONENTS"
3757         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3758     )
3759 }
3760
3761 map 'disable_components $v' $LIBRARY_LIST
3762
3763 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3764 set >> $logfile
3765
3766 test -n "$valgrind" && toolchain="valgrind-memcheck"
3767
3768 enabled ossfuzz && {
3769     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3770     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3771 }
3772
3773 case "$toolchain" in
3774     *-asan)
3775         cc_default="${toolchain%-asan}"
3776         add_cflags  -fsanitize=address
3777         add_ldflags -fsanitize=address
3778     ;;
3779     *-msan)
3780         cc_default="${toolchain%-msan}"
3781         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3782         add_ldflags -fsanitize=memory
3783     ;;
3784     *-tsan)
3785         cc_default="${toolchain%-tsan}"
3786         add_cflags  -fsanitize=thread -fPIE
3787         add_ldflags -fsanitize=thread -pie
3788         case "$toolchain" in
3789             gcc-tsan)
3790                 add_cflags  -fPIC
3791                 add_ldflags -fPIC
3792                 ;;
3793         esac
3794     ;;
3795     *-usan)
3796         cc_default="${toolchain%-usan}"
3797         add_cflags  -fsanitize=undefined
3798         add_ldflags -fsanitize=undefined
3799     ;;
3800     valgrind-*)
3801         target_exec_default="valgrind"
3802         case "$toolchain" in
3803             valgrind-massif)
3804                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3805                 ;;
3806             valgrind-memcheck)
3807                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3808                 ;;
3809         esac
3810     ;;
3811     msvc)
3812         # Check whether the current MSVC version needs the C99 converter.
3813         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3814         # support enough of C99 to build ffmpeg. Default to the new
3815         # behaviour if the regexp was unable to match anything, since this
3816         # successfully parses the version number of existing supported
3817         # versions that require the converter (MSVC 2010 and 2012).
3818         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3819         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3820             cc_default="cl"
3821             cxx_default="cl"
3822         else
3823             cc_default="c99wrap cl"
3824             cxx_default="c99wrap cl"
3825         fi
3826         ld_default="$source_path/compat/windows/mslink"
3827         nm_default="dumpbin -symbols"
3828         ar_default="lib"
3829         case "$arch" in
3830         arm*)
3831             as_default="armasm"
3832             ;;
3833         esac
3834         target_os_default="win32"
3835         # Use a relative path for TMPDIR. This makes sure all the
3836         # ffconf temp files are written with a relative path, avoiding
3837         # issues with msys/win32 path conversion for MSVC parameters
3838         # such as -Fo<file> or -out:<file>.
3839         TMPDIR=.
3840     ;;
3841     icl)
3842         cc_default="icl"
3843         ld_default="xilink"
3844         nm_default="dumpbin -symbols"
3845         ar_default="xilib"
3846         target_os_default="win32"
3847         TMPDIR=.
3848     ;;
3849     gcov)
3850         add_cflags  -fprofile-arcs -ftest-coverage
3851         add_ldflags -fprofile-arcs -ftest-coverage
3852     ;;
3853     llvm-cov)
3854         add_cflags -fprofile-arcs -ftest-coverage
3855         add_ldflags --coverage
3856     ;;
3857     hardened)
3858         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3859         add_cflags   -fno-strict-overflow -fstack-protector-all
3860         add_ldflags  -Wl,-z,relro -Wl,-z,now
3861         add_cflags   -fPIE
3862         add_ldexeflags -fPIE -pie
3863     ;;
3864     ?*)
3865         die "Unknown toolchain $toolchain"
3866     ;;
3867 esac
3868
3869 test -n "$cross_prefix" && enable cross_compile
3870
3871 if enabled cross_compile; then
3872     test -n "$arch" && test -n "$target_os" ||
3873         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3874 fi
3875
3876 ar_default="${cross_prefix}${ar_default}"
3877 cc_default="${cross_prefix}${cc_default}"
3878 cxx_default="${cross_prefix}${cxx_default}"
3879 nm_default="${cross_prefix}${nm_default}"
3880 pkg_config_default="${cross_prefix}${pkg_config_default}"
3881 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3882     ranlib_default="${cross_prefix}${ranlib_default} -D"
3883 else
3884     ranlib_default="${cross_prefix}${ranlib_default}"
3885 fi
3886 strip_default="${cross_prefix}${strip_default}"
3887 windres_default="${cross_prefix}${windres_default}"
3888
3889 sysinclude_default="${sysroot}/usr/include"
3890
3891 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3892     target_exec target_os x86asmexe nvcc
3893 enabled cross_compile || host_cc_default=$cc
3894 set_default host_cc
3895
3896 pkg_config_fail_message=""
3897 if ! $pkg_config --version >/dev/null 2>&1; then
3898     warn "$pkg_config not found, library detection may fail."
3899     pkg_config=false
3900 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3901     pkg_config_fail_message="
3902 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3903 fi
3904
3905 if test $doxygen != $doxygen_default && \
3906   ! $doxygen --version >/dev/null 2>&1; then
3907     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3908 fi
3909
3910 exesuf() {
3911     case $1 in
3912         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3913     esac
3914 }
3915
3916 EXESUF=$(exesuf $target_os)
3917 HOSTEXESUF=$(exesuf $host_os)
3918
3919 # set temporary file name
3920 : ${TMPDIR:=$TEMPDIR}
3921 : ${TMPDIR:=$TMP}
3922 : ${TMPDIR:=/tmp}
3923
3924 if [ -n "$tempprefix" ] ; then
3925     mktemp(){
3926         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3927         echo "$tmpname"
3928         mkdir "$tmpname"
3929     }
3930 elif ! check_cmd mktemp -u XXXXXX; then
3931     # simple replacement for missing mktemp
3932     # NOT SAFE FOR GENERAL USE
3933     mktemp(){
3934         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3935         echo "$tmpname"
3936         mkdir "$tmpname"
3937     }
3938 fi
3939
3940 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3941     die "Unable to create temporary directory in $TMPDIR."
3942
3943 tmpfile(){
3944     tmp="${FFTMPDIR}/test"$2
3945     (set -C; exec > $tmp) 2> /dev/null ||
3946         die "Unable to create temporary file in $FFTMPDIR."
3947     eval $1=$tmp
3948 }
3949
3950 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3951 trap 'exit 2' INT
3952
3953 tmpfile TMPASM .asm
3954 tmpfile TMPC   .c
3955 tmpfile TMPCPP .cpp
3956 tmpfile TMPE   $EXESUF
3957 tmpfile TMPH   .h
3958 tmpfile TMPM   .m
3959 tmpfile TMPO   .o
3960 tmpfile TMPS   .S
3961 tmpfile TMPSH  .sh
3962 tmpfile TMPV   .ver
3963
3964 unset -f mktemp
3965
3966 chmod +x $TMPE
3967
3968 # make sure we can execute files in $TMPDIR
3969 cat > $TMPSH 2>> $logfile <<EOF
3970 #! /bin/sh
3971 EOF
3972 chmod +x $TMPSH >> $logfile 2>&1
3973 if ! $TMPSH >> $logfile 2>&1; then
3974     cat <<EOF
3975 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3976 variable to another directory and make sure that it is not mounted noexec.
3977 EOF
3978     die "Sanity test failed."
3979 fi
3980
3981 armasm_flags(){
3982     for flag; do
3983         case $flag in
3984             # Filter out MSVC cl.exe options from cflags that shouldn't
3985             # be passed to gas-preprocessor
3986             -M[TD]*)                                            ;;
3987             *)                  echo $flag                      ;;
3988         esac
3989    done
3990 }
3991
3992 ccc_flags(){
3993     for flag; do
3994         case $flag in
3995             -std=c99)           echo -c99                       ;;
3996             -mcpu=*)            echo -arch ${flag#*=}           ;;
3997             -mieee)             echo -ieee                      ;;
3998             -O*|-fast)          echo $flag                      ;;
3999             -fno-math-errno)    echo -assume nomath_errno       ;;
4000             -g)                 echo -g3                        ;;
4001             -Wall)              echo -msg_enable level2         ;;
4002             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
4003             -Wl,*)              echo $flag                      ;;
4004             -f*|-W*)                                            ;;
4005             *)                  echo $flag                      ;;
4006         esac
4007    done
4008 }
4009
4010 cparser_flags(){
4011     for flag; do
4012         case $flag in
4013             -Wno-switch)             echo -Wno-switch-enum ;;
4014             -Wno-format-zero-length) ;;
4015             -Wdisabled-optimization) ;;
4016             -Wno-pointer-sign)       echo -Wno-other ;;
4017             *)                       echo $flag ;;
4018         esac
4019     done
4020 }
4021
4022 msvc_common_flags(){
4023     for flag; do
4024         case $flag in
4025             # In addition to specifying certain flags under the compiler
4026             # specific filters, they must be specified here as well or else the
4027             # generic catch all at the bottom will print the original flag.
4028             -Wall)                ;;
4029             -Wextra)              ;;
4030             -std=c99)             ;;
4031             # Common flags
4032             -fomit-frame-pointer) ;;
4033             -g)                   echo -Z7 ;;
4034             -fno-math-errno)      ;;
4035             -fno-common)          ;;
4036             -fno-signed-zeros)    ;;
4037             -fPIC)                ;;
4038             -mthumb)              ;;
4039             -march=*)             ;;
4040             -lz)                  echo zlib.lib ;;
4041             -lx264)               echo libx264.lib ;;
4042             -lstdc++)             ;;
4043             -l*)                  echo ${flag#-l}.lib ;;
4044             -LARGEADDRESSAWARE)   echo $flag ;;
4045             -L*)                  echo -libpath:${flag#-L} ;;
4046             *)                    echo $flag ;;
4047         esac
4048     done
4049 }
4050
4051 msvc_flags(){
4052     msvc_common_flags "$@"
4053     for flag; do
4054         case $flag in
4055             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4056                                        -wd4554 ;;
4057             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4058                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4059                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4060                                        -wd4307 \
4061                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4062         esac
4063     done
4064 }
4065
4066 icl_flags(){
4067     msvc_common_flags "$@"
4068     for flag; do
4069         case $flag in
4070             # Despite what Intel's documentation says -Wall, which is supported
4071             # on Windows, does enable remarks so disable them here.
4072             -Wall)                echo $flag -Qdiag-disable:remark ;;
4073             -std=c99)             echo -Qstd=c99 ;;
4074             -flto)                echo -ipo ;;
4075         esac
4076     done
4077 }
4078
4079 icc_flags(){
4080     for flag; do
4081         case $flag in
4082             -flto)                echo -ipo ;;
4083             *)                    echo $flag ;;
4084         esac
4085     done
4086 }
4087
4088 pgi_flags(){
4089     for flag; do
4090         case $flag in
4091             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4092             -fomit-frame-pointer) echo -Mnoframe ;;
4093             -g)                   echo -gopt ;;
4094             *)                    echo $flag ;;
4095         esac
4096     done
4097 }
4098
4099 suncc_flags(){
4100     for flag; do
4101         case $flag in
4102             -march=*|-mcpu=*)
4103                 case "${flag#*=}" in
4104                     native)                   echo -xtarget=native       ;;
4105                     v9|niagara)               echo -xarch=sparc          ;;
4106                     ultrasparc)               echo -xarch=sparcvis       ;;
4107                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4108                     i586|pentium)             echo -xchip=pentium        ;;
4109                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4110                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4111                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4112                     pentium4*)          echo -xtarget=pentium4           ;;
4113                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4114                     *-sse3)             echo -xarch=sse3                 ;;
4115                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4116                     bonnell)                   echo -xarch=ssse3         ;;
4117                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4118                     westmere)                  echo -xtarget=westmere    ;;
4119                     silvermont)                echo -xarch=sse4_2        ;;
4120                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4121                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4122                                                echo -xarch=avx           ;;
4123                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4124                     btver1)                    echo -xarch=amdsse4a      ;;
4125                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4126                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4127                     k8|opteron|athlon64|athlon-fx)
4128                                                echo -xarch=sse2a         ;;
4129                     athlon*)                   echo -xarch=pentium_proa  ;;
4130                 esac
4131                 ;;
4132             -std=c99)             echo -xc99              ;;
4133             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4134             -fPIC)                echo -KPIC -xcode=pic32 ;;
4135             -W*,*)                echo $flag              ;;
4136             -f*-*|-W*|-mimpure-text)                      ;;
4137             -shared)              echo -G                 ;;
4138             *)                    echo $flag              ;;
4139         esac
4140     done
4141 }
4142
4143 tms470_flags(){
4144     for flag; do
4145         case $flag in
4146             -march=*|-mcpu=*)
4147                 case "${flag#*=}" in
4148                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4149                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4150                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4151                     armv6*|arm11*)          echo -mv=6   ;;
4152                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4153                                             echo -mv=5e  ;;
4154                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4155                 esac
4156                 ;;
4157             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4158             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4159             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4160             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4161             -msoft-float)   echo --float_support=vfplib       ;;
4162             -O[0-3]|-mf=*)  echo $flag                        ;;
4163             -g)             echo -g -mn                       ;;
4164             -pds=*)         echo $flag                        ;;
4165             -D*|-I*)        echo $flag                        ;;
4166             --gcc|--abi=*)  echo $flag                        ;;
4167             -me)            echo $flag                        ;;
4168         esac
4169     done
4170 }
4171
4172 probe_cc(){
4173     pfx=$1
4174     _cc=$2
4175     first=$3
4176
4177     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4178     unset _ld_o _ldflags _ld_lib _ld_path
4179     unset _depflags _DEPCMD _DEPFLAGS
4180     _flags_filter=echo
4181
4182     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4183         true # no-op to avoid reading stdin in following checks
4184     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4185         _type=llvm_gcc
4186         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4187         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4188         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4189         _cflags_speed='-O3'
4190         _cflags_size='-Os'
4191     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4192         _type=gcc
4193         gcc_version=$($_cc --version | head -n1)
4194         gcc_basever=$($_cc -dumpversion)
4195         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4196         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4197         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4198         case $gcc_basever in
4199             2) ;;
4200             2.*) ;;
4201             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4202         esac
4203         if [ "$first" = true ]; then
4204             case $gcc_basever in
4205                 4.2*)
4206                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4207             esac
4208         fi
4209         _cflags_speed='-O3'
4210         _cflags_size='-Os'
4211     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4212         _type=icc
4213         _ident=$($_cc --version | head -n1)
4214         _depflags='-MMD'
4215         _cflags_speed='-O3'
4216         _cflags_size='-Os'
4217         _cflags_noopt='-O1'
4218         _flags_filter=icc_flags
4219     elif $_cc -v 2>&1 | grep -q xlc; then
4220         _type=xlc
4221         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4222         _cflags_speed='-O5'
4223         _cflags_size='-O5 -qcompact'
4224     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4225         _type=ccc
4226         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4227         _DEPFLAGS='-M'
4228         _cflags_speed='-fast'
4229         _cflags_size='-O1'
4230         _flags_filter=ccc_flags
4231     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4232         test -d "$sysroot" || die "No valid sysroot specified."
4233         _type=armcc
4234         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4235         armcc_conf="$PWD/armcc.conf"
4236         $_cc --arm_linux_configure                 \
4237              --arm_linux_config_file="$armcc_conf" \
4238              --configure_sysroot="$sysroot"        \
4239              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4240              die "Error creating armcc configuration file."
4241         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4242         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4243         as_default="${cross_prefix}gcc"
4244         _depflags='-MMD'
4245         _cflags_speed='-O3'
4246         _cflags_size='-Os'
4247     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4248         _type=tms470
4249         _ident=$($_cc -version | head -n1 | tr -s ' ')
4250         _flags='--gcc --abi=eabi -me'
4251         _cc_e='-ppl -fe=$@'
4252         _cc_o='-fe=$@'
4253         _depflags='-ppa -ppd=$(@:.o=.d)'
4254         _cflags_speed='-O3 -mf=5'
4255         _cflags_size='-O3 -mf=2'
4256         _flags_filter=tms470_flags
4257     elif $_cc -v 2>&1 | grep -q clang; then
4258         _type=clang
4259         _ident=$($_cc --version 2>/dev/null | head -n1)
4260         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4261         _cflags_speed='-O3'
4262         _cflags_size='-Oz'
4263     elif $_cc -V 2>&1 | grep -q Sun; then
4264         _type=suncc
4265         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4266         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4267         _DEPFLAGS='-xM1 -xc99'
4268         _ldflags='-std=c99'
4269         _cflags_speed='-O5'
4270         _cflags_size='-O5 -xspace'
4271         _flags_filter=suncc_flags
4272     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4273         _type=pathscale
4274         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4275         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4276         _cflags_speed='-O2'
4277         _cflags_size='-Os'
4278         _flags_filter='filter_out -Wdisabled-optimization'
4279     elif $_cc -v 2>&1 | grep -q Open64; then
4280         _type=open64
4281         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4282         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4283         _cflags_speed='-O2'
4284         _cflags_size='-Os'
4285         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4286     elif $_cc -V 2>&1 | grep -q Portland; then
4287         _type=pgi
4288         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4289         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4290         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4291         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4292         _cflags_noopt="-O"
4293         _flags_filter=pgi_flags
4294     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4295         _type=armasm
4296         _ident=$($_cc | head -n1)
4297         # 4509: "This form of conditional instruction is deprecated"
4298         _flags="-nologo -ignore 4509"
4299         _flags_filter=armasm_flags
4300     elif $_cc 2>&1 | grep -q Intel; then
4301         _type=icl
4302         _ident=$($_cc 2>&1 | head -n1)
4303         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4304         # Not only is O3 broken on 13.x+ but it is slower on all previous
4305         # versions (tested) as well.
4306         _cflags_speed="-O2"
4307         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4308         if $_cc 2>&1 | grep -q Linker; then
4309             _ld_o='-out:$@'
4310         else
4311             _ld_o='-Fe$@'
4312         fi
4313         _cc_o='-Fo$@'
4314         _cc_e='-P'
4315         _flags_filter=icl_flags
4316         _ld_lib='lib%.a'
4317         _ld_path='-libpath:'
4318         # -Qdiag-error to make icl error when seeing certain unknown arguments
4319         _flags='-nologo -Qdiag-error:4044,10157'
4320         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4321         # with MSVC which enables it by default.
4322         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4323         disable stripping
4324     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4325         # lld can emulate multiple different linkers; in ms link.exe mode,
4326         # the -? parameter gives the help output which contains an identifyable
4327         # string, while it gives an error in other modes.
4328         _type=lld-link
4329         # The link.exe mode doesn't have a switch for getting the version,
4330         # but we can force it back to gnu mode and get the version from there.
4331         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4332         _ld_o='-out:$@'
4333         _flags_filter=msvc_flags
4334         _ld_lib='lib%.a'
4335         _ld_path='-libpath:'
4336     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4337         _type=msvc
4338         _ident=$($_cc 2>&1 | head -n1)
4339         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4340         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4341         _cflags_speed="-O2"
4342         _cflags_size="-O1"
4343         _cflags_noopt="-O1"
4344         if $_cc -nologo- 2>&1 | grep -q Linker; then
4345             _ld_o='-out:$@'
4346         else
4347             _ld_o='-Fe$@'
4348         fi
4349         _cc_o='-Fo$@'
4350         _cc_e='-P -Fi$@'
4351         _flags_filter=msvc_flags
4352         _ld_lib='lib%.a'
4353         _ld_path='-libpath:'
4354         _flags='-nologo'
4355         disable stripping
4356     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4357         _type=cparser
4358         _ident=$($_cc --version | head -n1)
4359         _depflags='-MMD'
4360         _cflags_speed='-O4'
4361         _cflags_size='-O2'
4362         _flags_filter=cparser_flags
4363     fi
4364
4365     eval ${pfx}_type=\$_type
4366     eval ${pfx}_ident=\$_ident
4367 }
4368
4369 set_ccvars(){
4370     eval ${1}_C=\${_cc_c-\${${1}_C}}
4371     eval ${1}_E=\${_cc_e-\${${1}_E}}
4372     eval ${1}_O=\${_cc_o-\${${1}_O}}
4373
4374     if [ -n "$_depflags" ]; then
4375         eval ${1}_DEPFLAGS=\$_depflags
4376     else
4377         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4378         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4379         eval DEP${1}FLAGS=\$_flags
4380     fi
4381 }
4382
4383 probe_cc cc "$cc" "true"
4384 cflags_filter=$_flags_filter
4385 cflags_speed=$_cflags_speed
4386 cflags_size=$_cflags_size
4387 cflags_noopt=$_cflags_noopt
4388 add_cflags $_flags $_cflags
4389 cc_ldflags=$_ldflags
4390 set_ccvars CC
4391 set_ccvars CXX
4392
4393 probe_cc hostcc "$host_cc"
4394 host_cflags_filter=$_flags_filter
4395 host_cflags_speed=$_cflags_speed
4396 add_host_cflags  $_flags $_cflags
4397 set_ccvars HOSTCC
4398
4399 test -n "$cc_type" && enable $cc_type ||
4400     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4401
4402 : ${as_default:=$cc}
4403 : ${objcc_default:=$cc}
4404 : ${dep_cc_default:=$cc}
4405 : ${ld_default:=$cc}
4406 : ${host_ld_default:=$host_cc}
4407 set_default ar as objcc dep_cc ld ln_s host_ld windres
4408
4409 probe_cc as "$as"
4410 asflags_filter=$_flags_filter
4411 add_asflags $_flags $_cflags
4412 set_ccvars AS
4413
4414 probe_cc objcc "$objcc"
4415 objcflags_filter=$_flags_filter
4416 add_objcflags $_flags $_cflags
4417 set_ccvars OBJC
4418
4419 probe_cc ld "$ld"
4420 ldflags_filter=$_flags_filter
4421 add_ldflags $_flags $_ldflags
4422 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4423 LD_O=${_ld_o-$LD_O}
4424 LD_LIB=${_ld_lib-$LD_LIB}
4425 LD_PATH=${_ld_path-$LD_PATH}
4426
4427 probe_cc hostld "$host_ld"
4428 host_ldflags_filter=$_flags_filter
4429 add_host_ldflags $_flags $_ldflags
4430 HOSTLD_O=${_ld_o-$HOSTLD_O}
4431
4432 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4433     probe_cc depcc "$dep_cc"
4434     CCDEP=${_DEPCMD:-$DEPCMD}
4435     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4436     DEPCCFLAGS=$_flags
4437 fi
4438
4439 if $ar 2>&1 | grep -q Microsoft; then
4440     arflags="-nologo"
4441     ar_o='-out:$@'
4442 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4443     arflags="rq"
4444     ar_o='$@'
4445 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4446     arflags='-Xany -r -c'
4447     ar_o='$@'
4448 elif $ar 2>&1 | grep -q "\[D\] "; then
4449     arflags="rcD"
4450     ar_o='$@'
4451 else
4452     arflags="rc"
4453     ar_o='$@'
4454 fi
4455
4456 add_cflags $extra_cflags
4457 add_cxxflags $extra_cxxflags
4458 add_objcflags $extra_objcflags
4459 add_asflags $extra_cflags
4460
4461 if test -n "$sysroot"; then
4462     case "$cc_type" in
4463         gcc|llvm_gcc|clang)
4464             add_cppflags --sysroot="$sysroot"
4465             add_ldflags --sysroot="$sysroot"
4466 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4467             add_cppflags -isysroot "$sysroot"
4468             add_ldflags -isysroot "$sysroot"
4469         ;;
4470         tms470)
4471             add_cppflags -I"$sysinclude"
4472             add_ldflags  --sysroot="$sysroot"
4473         ;;
4474     esac
4475 fi
4476
4477 if test "$cpu" = host; then
4478     enabled cross_compile &&
4479         die "--cpu=host makes no sense when cross-compiling."
4480
4481     case "$cc_type" in
4482         gcc|llvm_gcc)
4483             check_native(){
4484                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4485                 sed -n "/cc1.*$1=/{
4486                             s/.*$1=\\([^ ]*\\).*/\\1/
4487                             p
4488                             q
4489                         }" $TMPE
4490             }
4491             cpu=$(check_native -march || check_native -mcpu)
4492         ;;
4493         clang)
4494             check_native(){
4495                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4496                 sed -n "/cc1.*-target-cpu /{
4497                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4498                             p
4499                             q
4500                         }" $TMPE
4501             }
4502             cpu=$(check_native -march)
4503         ;;
4504     esac
4505
4506     test "${cpu:-host}" = host &&
4507         die "--cpu=host not supported with compiler $cc"
4508 fi
4509
4510 # Deal with common $arch aliases
4511 case "$arch" in
4512     aarch64|arm64)
4513         arch="aarch64"
4514     ;;
4515     arm*|iPad*|iPhone*)
4516         arch="arm"
4517     ;;
4518     mips*|IP*)
4519         case "$arch" in
4520         *el)
4521             add_cppflags -EL
4522             add_ldflags -EL
4523         ;;
4524         *eb)
4525             add_cppflags -EB
4526             add_ldflags -EB
4527         ;;
4528         esac
4529         arch="mips"
4530     ;;
4531     parisc*|hppa*)
4532         arch="parisc"
4533     ;;
4534     "Power Macintosh"|ppc*|powerpc*)
4535         arch="ppc"
4536     ;;
4537     s390|s390x)
4538         arch="s390"
4539     ;;
4540     sh4|sh)
4541         arch="sh4"
4542     ;;
4543     sun4*|sparc*)
4544         arch="sparc"
4545     ;;
4546     tilegx|tile-gx)
4547         arch="tilegx"
4548     ;;
4549     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4550         arch="x86"
4551     ;;
4552 esac
4553
4554 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4555 enable $arch
4556
4557 # Add processor-specific flags
4558 if enabled aarch64; then
4559
4560     case $cpu in
4561         armv*)
4562             cpuflags="-march=$cpu"
4563         ;;
4564         *)
4565             cpuflags="-mcpu=$cpu"
4566         ;;
4567     esac
4568
4569 elif enabled alpha; then
4570
4571     cpuflags="-mcpu=$cpu"
4572
4573 elif enabled arm; then
4574
4575     check_arm_arch() {
4576         check_cpp_condition stddef.h \
4577             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4578             $cpuflags
4579     }
4580
4581     probe_arm_arch() {
4582         if   check_arm_arch 4;        then echo armv4
4583         elif check_arm_arch 4T;       then echo armv4t
4584         elif check_arm_arch 5;        then echo armv5
4585         elif check_arm_arch 5E;       then echo armv5e
4586         elif check_arm_arch 5T;       then echo armv5t
4587         elif check_arm_arch 5TE;      then echo armv5te
4588         elif check_arm_arch 5TEJ;     then echo armv5te
4589         elif check_arm_arch 6;        then echo armv6
4590         elif check_arm_arch 6J;       then echo armv6j
4591         elif check_arm_arch 6K;       then echo armv6k
4592         elif check_arm_arch 6Z;       then echo armv6z
4593         elif check_arm_arch 6ZK;      then echo armv6zk
4594         elif check_arm_arch 6T2;      then echo armv6t2
4595         elif check_arm_arch 7;        then echo armv7
4596         elif check_arm_arch 7A  7_A;  then echo armv7-a
4597         elif check_arm_arch 7S;       then echo armv7-a
4598         elif check_arm_arch 7R  7_R;  then echo armv7-r
4599         elif check_arm_arch 7M  7_M;  then echo armv7-m
4600         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4601         elif check_arm_arch 8A  8_A;  then echo armv8-a
4602         fi
4603     }
4604
4605     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4606
4607     case $cpu in
4608         armv*)
4609             cpuflags="-march=$cpu"
4610             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4611         ;;
4612         *)
4613             cpuflags="-mcpu=$cpu"
4614             case $cpu in
4615                 cortex-a*)                               subarch=armv7a  ;;
4616                 cortex-r*)                               subarch=armv7r  ;;
4617                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4618                 arm11*)                                  subarch=armv6   ;;
4619                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4620                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4621                 *)                             subarch=$(probe_arm_arch) ;;
4622             esac
4623         ;;
4624     esac
4625
4626     case "$subarch" in
4627         armv5t*)    enable fast_clz                ;;
4628         armv[6-8]*)
4629             enable fast_clz
4630             disabled fast_unaligned || enable fast_unaligned
4631             ;;
4632     esac
4633
4634 elif enabled avr32; then
4635
4636     case $cpu in
4637         ap7[02]0[0-2])
4638             subarch="avr32_ap"
4639             cpuflags="-mpart=$cpu"
4640         ;;
4641         ap)
4642             subarch="avr32_ap"
4643             cpuflags="-march=$cpu"
4644         ;;
4645         uc3[ab]*)
4646             subarch="avr32_uc"
4647             cpuflags="-mcpu=$cpu"
4648         ;;
4649         uc)
4650             subarch="avr32_uc"
4651             cpuflags="-march=$cpu"
4652         ;;
4653     esac
4654
4655 elif enabled bfin; then
4656
4657     cpuflags="-mcpu=$cpu"
4658
4659 elif enabled mips; then
4660
4661     cpuflags="-march=$cpu"
4662
4663     if [ "$cpu" != "generic" ]; then
4664         disable mips32r2
4665         disable mips32r5
4666         disable mips64r2
4667         disable mips32r6
4668         disable mips64r6
4669         disable loongson2
4670         disable loongson3
4671
4672         case $cpu in
4673             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4674                 enable mips32r2
4675                 disable msa
4676             ;;
4677             p5600|i6400|p6600)
4678                 disable mipsdsp
4679                 disable mipsdspr2
4680             ;;
4681             loongson*)
4682                 enable loongson2
4683                 enable loongson3
4684                 enable local_aligned
4685                 enable simd_align_16
4686                 enable fast_64bit
4687                 enable fast_clz
4688                 enable fast_cmov
4689                 enable fast_unaligned
4690                 disable aligned_stack
4691                 disable mipsfpu
4692                 disable mipsdsp
4693                 disable mipsdspr2
4694                 case $cpu in
4695                     loongson3*)
4696                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4697                     ;;
4698                     loongson2e)
4699                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4700                     ;;
4701                     loongson2f)
4702                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4703                     ;;
4704                 esac
4705             ;;
4706             *)
4707                 # Unknown CPU. Disable everything.
4708                 warn "unknown CPU. Disabling all MIPS optimizations."
4709                 disable mipsfpu
4710                 disable mipsdsp
4711                 disable mipsdspr2
4712                 disable msa
4713                 disable mmi
4714             ;;
4715         esac
4716
4717         case $cpu in
4718             24kc)
4719                 disable mipsfpu
4720                 disable mipsdsp
4721                 disable mipsdspr2
4722             ;;
4723             24kf*)
4724                 disable mipsdsp
4725                 disable mipsdspr2
4726             ;;
4727             24kec|34kc|1004kc)
4728                 disable mipsfpu
4729                 disable mipsdspr2
4730             ;;
4731             24kef*|34kf*|1004kf*)
4732                 disable mipsdspr2
4733             ;;
4734             74kc)
4735                 disable mipsfpu
4736             ;;
4737             p5600)
4738                 enable mips32r5
4739                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4740             ;;
4741             i6400)
4742                 enable mips64r6
4743                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4744             ;;
4745             p6600)
4746                 enable mips64r6
4747                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4748             ;;
4749         esac
4750     else
4751         # We do not disable anything. Is up to the user to disable the unwanted features.
4752         warn 'generic cpu selected'
4753     fi
4754
4755 elif enabled ppc; then
4756
4757     disable ldbrx
4758
4759     case $(tolower $cpu) in
4760         601|ppc601|powerpc601)
4761             cpuflags="-mcpu=601"
4762             disable altivec
4763         ;;
4764         603*|ppc603*|powerpc603*)
4765             cpuflags="-mcpu=603"
4766             disable altivec
4767         ;;
4768         604*|ppc604*|powerpc604*)
4769             cpuflags="-mcpu=604"
4770             disable altivec
4771         ;;
4772         g3|75*|ppc75*|powerpc75*)
4773             cpuflags="-mcpu=750"
4774             disable altivec
4775         ;;
4776         g4|745*|ppc745*|powerpc745*)
4777             cpuflags="-mcpu=7450"
4778             disable vsx
4779         ;;
4780         74*|ppc74*|powerpc74*)
4781             cpuflags="-mcpu=7400"
4782             disable vsx
4783         ;;
4784         g5|970|ppc970|powerpc970)
4785             cpuflags="-mcpu=970"
4786             disable vsx
4787         ;;
4788         power[3-6]*)
4789             cpuflags="-mcpu=$cpu"
4790             disable vsx
4791         ;;
4792         power[7-8]*)
4793             cpuflags="-mcpu=$cpu"
4794         ;;
4795         cell)
4796             cpuflags="-mcpu=cell"
4797             enable ldbrx
4798             disable vsx
4799         ;;
4800         e500mc)
4801             cpuflags="-mcpu=e500mc"
4802             disable altivec
4803         ;;
4804         e500v2)
4805             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4806             disable altivec
4807             disable dcbzl
4808         ;;
4809         e500)
4810             cpuflags="-mcpu=8540 -mhard-float"
4811             disable altivec
4812             disable dcbzl
4813         ;;
4814     esac
4815
4816 elif enabled sparc; then
4817
4818     case $cpu in
4819         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4820             cpuflags="-mcpu=$cpu"
4821         ;;
4822         ultrasparc*|niagara[234])
4823             cpuflags="-mcpu=$cpu"
4824         ;;
4825     esac
4826
4827 elif enabled x86; then
4828
4829     case $cpu in
4830         i[345]86|pentium)
4831             cpuflags="-march=$cpu"
4832             disable i686
4833             disable mmx
4834         ;;
4835         # targets that do NOT support nopl and conditional mov (cmov)
4836         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4837             cpuflags="-march=$cpu"
4838             disable i686
4839         ;;
4840         # targets that do support nopl and conditional mov (cmov)
4841         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4842         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4843         |amdfam10|barcelona|b[dt]ver*|znver*)
4844             cpuflags="-march=$cpu"
4845             enable i686
4846             enable fast_cmov
4847         ;;
4848         # targets that do support conditional mov but on which it's slow
4849         pentium4|pentium4m|prescott|nocona)
4850             cpuflags="-march=$cpu"
4851             enable i686
4852             disable fast_cmov
4853         ;;
4854     esac
4855
4856 fi
4857
4858 if [ "$cpu" != generic ]; then
4859     add_cflags  $cpuflags
4860     add_asflags $cpuflags
4861     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4862 fi
4863
4864 # compiler sanity check
4865 check_exec <<EOF
4866 int main(void){ return 0; }
4867 EOF
4868 if test "$?" != 0; then
4869     echo "$cc is unable to create an executable file."
4870     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4871         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4872         echo "Only do this if you know what cross compiling means."
4873     fi
4874     die "C compiler test failed."
4875 fi
4876
4877 add_cppflags -D_ISOC99_SOURCE
4878 add_cxxflags -D__STDC_CONSTANT_MACROS
4879 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4880
4881 # some compilers silently accept -std=c11, so we also need to check that the
4882 # version macro is defined properly
4883 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4884     add_cflags -std=c11 ||
4885     check_cflags -std=c99
4886
4887 check_cppflags -D_FILE_OFFSET_BITS=64
4888 check_cppflags -D_LARGEFILE_SOURCE
4889
4890 add_host_cppflags -D_ISOC99_SOURCE
4891 check_host_cflags -std=c99
4892 check_host_cflags -Wall
4893 check_host_cflags $host_cflags_speed
4894
4895 check_64bit(){
4896     arch32=$1
4897     arch64=$2
4898     expr=$3
4899     check_code cc "" "int test[2*($expr) - 1]" &&
4900         subarch=$arch64 || subarch=$arch32
4901 }
4902
4903 case "$arch" in
4904     aarch64|alpha|ia64)
4905         spic=$shared
4906     ;;
4907     mips)
4908         check_64bit mips mips64 '_MIPS_SIM > 1'
4909         spic=$shared
4910     ;;
4911     parisc)
4912         check_64bit parisc parisc64 'sizeof(void *) > 4'
4913         spic=$shared
4914     ;;
4915     ppc)
4916         check_64bit ppc ppc64 'sizeof(void *) > 4'
4917         spic=$shared
4918     ;;
4919     s390)
4920         check_64bit s390 s390x 'sizeof(void *) > 4'
4921         spic=$shared
4922     ;;
4923     sparc)
4924         check_64bit sparc sparc64 'sizeof(void *) > 4'
4925         spic=$shared
4926     ;;
4927     x86)
4928         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4929         # Treat x32 as x64 for now. Note it also needs spic=$shared
4930         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4931             subarch=x86_64
4932         if test "$subarch" = "x86_64"; then
4933             spic=$shared
4934         fi
4935     ;;
4936     ppc)
4937         check_cc <<EOF && subarch="ppc64"
4938         int test[(int)sizeof(char*) - 7];
4939 EOF
4940     ;;
4941 esac
4942
4943 enable $subarch
4944 enabled spic && enable_weak pic
4945
4946 enabled x86_64 && objformat=elf64 || objformat="elf32"
4947
4948 # OS specific
4949 case $target_os in
4950     aix)
4951         SHFLAGS=-shared
4952         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4953         enabled shared && add_ldflags -Wl,-brtl
4954         ;;
4955     android)
4956         disable symver
4957         enable section_data_rel_ro
4958         SLIB_INSTALL_NAME='$(SLIBNAME)'
4959         SLIB_INSTALL_LINKS=
4960         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4961         ;;
4962     haiku)
4963         prefix_default="/boot/common"
4964         network_extralibs="-lnetwork"
4965         host_extralibs=
4966         ;;
4967     sunos)
4968         SHFLAGS='-shared -Wl,-h,$$(@F)'
4969         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4970         network_extralibs="-lsocket -lnsl"
4971         add_cppflags -D__EXTENSIONS__
4972         # When using suncc to build, the Solaris linker will mark
4973         # an executable with each instruction set encountered by
4974         # the Solaris assembler.  As our libraries contain their own
4975         # guards for processor-specific code, instead suppress
4976         # generation of the HWCAPS ELF section on Solaris x86 only.
4977         enabled_all suncc x86 &&
4978             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4979             add_ldflags -Wl,-M,mapfile
4980         nm_default='nm -P -g'
4981         version_script='-M'
4982         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4983         ;;
4984     netbsd)
4985         disable symver
4986         oss_indev_extralibs="-lossaudio"
4987         oss_outdev_extralibs="-lossaudio"
4988         enabled gcc || check_ldflags -Wl,-zmuldefs
4989         ;;
4990     openbsd|bitrig)
4991         disable symver
4992         SHFLAGS='-shared'
4993         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4994         SLIB_INSTALL_LINKS=
4995         oss_indev_extralibs="-lossaudio"
4996         oss_outdev_extralibs="-lossaudio"
4997         ;;
4998     dragonfly)
4999         disable symver
5000         ;;
5001     freebsd)
5002         ;;
5003     bsd/os)
5004         add_extralibs -lpoll -lgnugetopt
5005         strip="strip -d"
5006         ;;
5007     darwin)
5008         enabled ppc && add_asflags -force_cpusubtype_ALL
5009         install_name_dir_default='$(SHLIBDIR)'
5010         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5011         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5012         strip="${strip} -x"
5013         add_ldflags -Wl,-dynamic,-search_paths_first
5014         check_cflags -Werror=partial-availability
5015         SLIBSUF=".dylib"
5016         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5017         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5018         enabled x86_64 && objformat="macho64" || objformat="macho32"
5019         enabled_any pic shared x86_64 ||
5020             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5021         check_header dispatch/dispatch.h &&
5022             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5023         version_script='-exported_symbols_list'
5024         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5025         ;;
5026     msys*)
5027         die "Native MSYS builds are discouraged, please use the MINGW environment."
5028         ;;
5029     mingw32*|mingw64*)
5030         if test $target_os = "mingw32ce"; then
5031             disable network
5032         else
5033             target_os=mingw32
5034         fi
5035         LIBTARGET=i386
5036         if enabled x86_64; then
5037             LIBTARGET="i386:x86-64"
5038         elif enabled arm; then
5039             LIBTARGET=arm-wince
5040         fi
5041         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5042         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5043         shlibdir_default="$bindir_default"
5044         SLIBPREF=""
5045         SLIBSUF=".dll"
5046         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5047         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5048         dlltool="${cross_prefix}dlltool"
5049         if check_cmd lib.exe -list; then
5050             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5051             if enabled x86_64; then
5052                 LIBTARGET=x64
5053             fi
5054         elif check_cmd $dlltool --version; then
5055             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5056         fi
5057         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5058         SLIB_INSTALL_LINKS=
5059         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5060         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5061         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
5062         enabled x86_64 && objformat="win64" || objformat="win32"
5063         ranlib=:
5064         enable dos_paths
5065         check_ldflags -Wl,--nxcompat,--dynamicbase
5066         # Lets work around some stupidity in binutils.
5067         # ld will strip relocations from executables even though we need them
5068         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5069         # however ld then forgets what the entry point should be (oops) so we
5070         # have to manually (re)set it.
5071         if enabled x86_32; then
5072             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5073         elif enabled x86_64; then
5074             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5075             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5076             # Set image base >4GB for extra entropy with HEASLR
5077             add_ldexeflags -Wl,--image-base,0x140000000
5078             append SHFLAGS -Wl,--image-base,0x180000000
5079         fi
5080         ;;
5081     win32|win64)
5082         disable symver
5083         if enabled shared; then
5084             # Link to the import library instead of the normal static library
5085             # for shared libs.
5086             LD_LIB='%.lib'
5087             # Cannot build both shared and static libs with MSVC or icl.
5088             disable static
5089         fi
5090         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5091         shlibdir_default="$bindir_default"
5092         SLIBPREF=""
5093         SLIBSUF=".dll"
5094         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5095         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5096         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5097         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5098         SLIB_INSTALL_LINKS=
5099         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5100         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5101         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5102         enabled x86_64 && objformat="win64" || objformat="win32"
5103         ranlib=:
5104         enable dos_paths
5105         ;;
5106     cygwin*)
5107         target_os=cygwin
5108         shlibdir_default="$bindir_default"
5109         SLIBPREF="cyg"
5110         SLIBSUF=".dll"
5111         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5112         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5113         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5114         SLIB_INSTALL_LINKS=
5115         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5116         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5117         enabled x86_64 && objformat="win64" || objformat="win32"
5118         enable dos_paths
5119         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5120         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5121         ;;
5122     *-dos|freedos|opendos)
5123         network_extralibs="-lsocket"
5124         objformat="coff"
5125         enable dos_paths
5126         add_cppflags -U__STRICT_ANSI__
5127         ;;
5128     linux)
5129         enable section_data_rel_ro
5130         enabled_any arm aarch64 && enable_weak linux_perf
5131         ;;
5132     irix*)
5133         target_os=irix
5134         ranlib="echo ignoring ranlib"
5135         ;;
5136     os/2*)
5137         strip="lxlite -CS"
5138         striptype=""
5139         objformat="aout"
5140         add_cppflags -D_GNU_SOURCE
5141         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5142         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5143         LIBSUF="_s.a"
5144         SLIBPREF=""
5145         SLIBSUF=".dll"
5146         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5147         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5148         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5149             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5150             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5151             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5152             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5153         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5154             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5155         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5156         SLIB_INSTALL_LINKS=
5157         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5158         enable dos_paths
5159         enable_weak os2threads
5160         ;;
5161     gnu/kfreebsd)
5162         add_cppflags -D_BSD_SOURCE
5163         ;;
5164     gnu)
5165         ;;
5166     qnx)
5167         add_cppflags -D_QNX_SOURCE
5168         network_extralibs="-lsocket"
5169         ;;
5170     symbian)
5171         SLIBSUF=".dll"
5172         enable dos_paths
5173         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5174         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5175         add_ldflags -Wl,--target1-abs,--no-undefined \
5176                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5177                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5178         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5179                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5180                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5181         ;;
5182     osf1)
5183         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5184         ;;
5185     minix)
5186         ;;
5187     none)
5188         ;;
5189     *)
5190         die "Unknown OS '$target_os'."
5191         ;;
5192 esac
5193
5194 # test if creating links works
5195 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5196 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5197 mkdir "$link_dest"
5198 $ln_s "$link_dest" "$link_name"
5199 touch "$link_dest/test_file"
5200 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5201     # create link to source path
5202     [ -e src ] && rm src
5203     $ln_s "$source_path" src
5204     source_link=src
5205 else
5206     # creating directory links doesn't work
5207     # fall back to using the full source path
5208     source_link="$source_path"
5209 fi
5210 # cleanup
5211 rm -r "$link_dest"
5212 rm -r "$link_name"
5213
5214 # determine libc flavour
5215
5216 probe_libc(){
5217     pfx=$1
5218     pfx_no_=${pfx%_}
5219     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5220     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5221         eval ${pfx}libc_type=uclibc
5222         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5223     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5224         eval ${pfx}libc_type=glibc
5225         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5226     # MinGW headers can be installed on Cygwin, so check for newlib first.
5227     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5228         eval ${pfx}libc_type=newlib
5229         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5230     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5231     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5232         eval ${pfx}libc_type=mingw64
5233         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5234             add_compat msvcrt/snprintf.o
5235             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5236         fi
5237         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5238         eval test \$${pfx_no_}cc_type = "gcc" &&
5239             add_${pfx}cppflags -D__printf__=__gnu_printf__
5240     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5241          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5242         eval ${pfx}libc_type=mingw32
5243         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5244             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5245             die "ERROR: MinGW32 runtime version must be >= 3.15."
5246         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5247         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5248             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5249         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5250             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5251         eval test \$${pfx_no_}cc_type = "gcc" &&
5252             add_${pfx}cppflags -D__printf__=__gnu_printf__
5253     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5254         eval ${pfx}libc_type=msvcrt
5255         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5256             if [ "$pfx" = host_ ]; then
5257                 add_host_cppflags -Dsnprintf=_snprintf
5258             else
5259                 add_compat strtod.o strtod=avpriv_strtod
5260                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5261                                              _snprintf=avpriv_snprintf  \
5262                                              vsnprintf=avpriv_vsnprintf
5263             fi
5264         fi
5265         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5266         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5267         # 0x601 by default unless something else is set by the user.
5268         # This can easily lead to us detecting functions only present
5269         # in such new versions and producing binaries requiring windows 7.0.
5270         # Therefore explicitly set the default to XP unless the user has
5271         # set something else on the command line.
5272         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5273         # family. For these cases, configure is free to use any functions
5274         # found in the SDK headers by default. (Alternatively, we could force
5275         # _WIN32_WINNT to 0x0602 in that case.)
5276         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5277             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5278 #ifdef WINAPI_FAMILY
5279 #include <winapifamily.h>
5280 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5281 #error not desktop
5282 #endif
5283 #endif
5284 EOF
5285         if [ "$pfx" = "" ]; then
5286             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5287             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5288         fi
5289     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5290         eval ${pfx}libc_type=klibc
5291     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5292         eval ${pfx}libc_type=bionic
5293     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5294         eval ${pfx}libc_type=solaris
5295         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5296     fi
5297     check_${pfx}cc <<EOF
5298 #include <time.h>
5299 void *v = localtime_r;
5300 EOF
5301 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5302 #include <time.h>
5303 void *v = localtime_r;
5304 EOF
5305
5306 }
5307
5308 probe_libc
5309 test -n "$libc_type" && enable libc_$libc_type
5310 probe_libc host_
5311 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5312
5313 # hacks for compiler/libc/os combinations
5314
5315 case $libc_type in
5316     bionic)
5317         add_compat strtod.o strtod=avpriv_strtod
5318         ;;
5319     glibc)
5320         if enabled tms470; then
5321             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5322             add_cppflags -D__USER_LABEL_PREFIX__=
5323             add_cppflags -D__builtin_memset=memset
5324             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5325             add_cflags   -pds=48    # incompatible redefinition of macro
5326         elif enabled ccc; then
5327             add_ldflags -Wl,-z,now  # calls to libots crash without this
5328         fi
5329         ;;
5330 esac
5331
5332 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5333     add_cppflags '-I\$(SRC_PATH)/compat/float'
5334
5335 esc(){
5336     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5337 }
5338
5339 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5340
5341 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5342
5343 set_default libdir
5344 : ${shlibdir_default:="$libdir"}
5345 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5346
5347 set_default $PATHS_LIST
5348 set_default nm
5349
5350 # we need to build at least one lib type
5351 if ! enabled_any static shared; then
5352     cat <<EOF
5353 At least one library type must be built.
5354 Specify --enable-static to build the static libraries or --enable-shared to
5355 build the shared libraries as well. To only build the shared libraries specify
5356 --disable-static in addition to --enable-shared.
5357 EOF
5358     exit 1
5359 fi
5360
5361 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5362
5363 enable_weak_pic() {
5364     disabled pic && return
5365     enable pic
5366     add_cppflags -DPIC
5367     case "$target_os" in
5368     mingw*|cygwin*)
5369         ;;
5370     *)
5371         add_cflags -fPIC
5372         ;;
5373     esac
5374     add_asflags  -fPIC
5375 }
5376
5377 enabled pic && enable_weak_pic
5378
5379 check_cc <<EOF || die "Symbol mangling check failed."
5380 int ff_extern;
5381 EOF
5382 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5383 extern_prefix=${sym%%ff_extern*}
5384
5385 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5386
5387 _restrict=
5388 for restrict_keyword in restrict __restrict__ __restrict; do
5389     check_cc <<EOF && _restrict=$restrict_keyword && break
5390 void foo(char * $restrict_keyword p);
5391 EOF
5392 done
5393
5394 check_cc <<EOF && enable pragma_deprecated
5395 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5396 EOF
5397
5398 check_cc <<EOF && enable attribute_packed
5399 struct { int x; } __attribute__((packed)) x;
5400 EOF
5401
5402 check_cc <<EOF && enable attribute_may_alias
5403 union { int x; } __attribute__((may_alias)) x;
5404 EOF
5405
5406 check_cc <<EOF || die "endian test failed"
5407 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5408 EOF
5409 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5410
5411 check_cc <<EOF && enable const_nan
5412 #include <math.h>
5413 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5414 EOF
5415
5416 if ! enabled ppc64 || enabled bigendian; then
5417     disable vsx
5418 fi
5419
5420 check_gas() {
5421     log "check_gas using '$as' as AS"
5422     # :vararg is used on aarch64, arm and ppc altivec
5423     check_as <<EOF || return 1
5424 .macro m n, y:vararg=0
5425 \n: .int \y
5426 .endm
5427 m x
5428 EOF
5429     # .altmacro is only used in arm asm
5430     ! enabled arm || check_as <<EOF || return 1
5431 .altmacro
5432 EOF
5433     enable gnu_as
5434     return 0
5435 }
5436
5437 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5438     nogas=:
5439     enabled_any arm aarch64 && nogas=die
5440     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5441     as_noop=-v
5442
5443     case $as_type in
5444         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5445         gcc)  gaspp_as_type=gas ;;
5446         *)    gaspp_as_type=$as_type ;;
5447     esac
5448
5449     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5450
5451     test "${as#*gas-preprocessor.pl}" != "$as" ||
5452     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5453         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5454
5455     if ! check_gas ; then
5456         as=${gas:=$as}
5457         check_gas || \
5458             $nogas "GNU assembler not found, install/update gas-preprocessor"
5459     fi
5460
5461     check_as <<EOF && enable as_func
5462 .func test
5463 .endfunc
5464 EOF
5465 fi
5466
5467 check_inline_asm inline_asm_labels '"1:\n"'
5468
5469 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5470
5471 if enabled aarch64; then
5472     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5473     # internal assembler in clang 3.3 does not support this instruction
5474     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5475     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5476
5477     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5478
5479 elif enabled alpha; then
5480
5481     check_cflags -mieee
5482
5483 elif enabled arm; then
5484
5485     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5486
5487     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5488 float func(float a, float b){ return a+b; }
5489 EOF
5490
5491     enabled thumb && check_cflags -mthumb || check_cflags -marm
5492
5493     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5494         enable vfp_args
5495     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5496         enable vfp_args
5497     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5498         case "${cross_prefix:-$cc}" in
5499             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5500             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5501 __asm__ (".eabi_attribute 28, 1");
5502 int main(void) { return 0; }
5503 EOF
5504         esac
5505         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5506     fi
5507
5508     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5509     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5510     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5511     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5512     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5513     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5514     enabled setend  && check_insn setend  'setend be'
5515
5516     [ $target_os = linux ] || [ $target_os = android ] ||
5517         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5518             $ARCH_EXT_LIST_ARM
5519
5520     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5521
5522     check_as <<EOF && enable as_dn_directive
5523 ra .dn d0.i16
5524 .unreq ra
5525 EOF
5526     check_as <<EOF && enable as_fpu_directive
5527 .fpu neon
5528 EOF
5529
5530     # llvm's integrated assembler supports .object_arch from llvm 3.5
5531     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5532         check_as <<EOF && enable as_object_arch
5533 .object_arch armv4
5534 EOF
5535
5536     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5537
5538 elif enabled mips; then
5539
5540     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5541     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5542     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5543
5544     # Enable minimum ISA based on selected options
5545     if enabled mips64; then
5546         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5547         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5548         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5549     else
5550         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5551         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5552         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5553         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5554     fi
5555
5556     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5557     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5558     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5559     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5560     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5561
5562     if enabled bigendian && enabled msa; then
5563         disable msa
5564     fi
5565
5566 elif enabled parisc; then
5567
5568     if enabled gcc; then
5569         case $($cc -dumpversion) in
5570             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5571         esac
5572     fi
5573
5574 elif enabled ppc; then
5575
5576     enable local_aligned
5577
5578     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5579     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5580     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5581     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5582
5583     # AltiVec flags: The FSF version of GCC differs from the Apple version
5584     if enabled altivec; then
5585         check_cflags -maltivec -mabi=altivec &&
5586         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5587         check_cflags -faltivec
5588
5589         # check if our compiler supports Motorola AltiVec C API
5590         check_cc <<EOF || disable altivec
5591 $inc_altivec_h
5592 int main(void) {
5593     vector signed int v1 = (vector signed int) { 0 };
5594     vector signed int v2 = (vector signed int) { 1 };
5595     v1 = vec_add(v1, v2);
5596     return 0;
5597 }
5598 EOF
5599
5600         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5601     fi
5602
5603     if enabled vsx; then
5604         check_cflags -mvsx &&
5605         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5606     fi
5607
5608     if enabled power8; then
5609         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5610     fi
5611
5612 elif enabled x86; then
5613
5614     check_builtin rdtsc    intrin.h   "__rdtsc()"
5615     check_builtin mm_empty mmintrin.h "_mm_empty()"
5616
5617     enable local_aligned
5618
5619     # check whether EBP is available on x86
5620     # As 'i' is stored on the stack, this program will crash
5621     # if the base pointer is used to access it because the
5622     # base pointer is cleared in the inline assembly code.
5623     check_exec_crash <<EOF && enable ebp_available
5624 volatile int i=0;
5625 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5626 return i;
5627 EOF
5628
5629     # check whether EBX is available on x86
5630     check_inline_asm ebx_available '""::"b"(0)' &&
5631         check_inline_asm ebx_available '"":::"%ebx"'
5632
5633     # check whether xmm clobbers are supported
5634     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5635
5636     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5637         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5638
5639     # check whether binutils is new enough to compile SSSE3/MMXEXT
5640     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5641     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5642
5643     probe_x86asm(){
5644         x86asmexe_probe=$1
5645         if check_cmd $x86asmexe_probe -v; then
5646             x86asmexe=$x86asmexe_probe
5647             x86asm_type=nasm
5648             x86asm_debug="-g -F dwarf"
5649         elif check_cmd $x86asmexe_probe --version; then
5650             x86asmexe=$x86asmexe_probe
5651             x86asm_type=yasm
5652             x86asm_debug="-g dwarf2"
5653         fi
5654         check_x86asm "movbe ecx, [5]" && enable x86asm
5655     }
5656
5657     if ! disabled_any asm mmx x86asm; then
5658         disable x86asm
5659         for program in $x86asmexe nasm yasm; do
5660             probe_x86asm $program && break
5661         done
5662         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5663         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5664         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5665         X86ASMFLAGS="-f $objformat"
5666         enabled pic               && append X86ASMFLAGS "-DPIC"
5667         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5668         case "$objformat" in
5669             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5670         esac
5671
5672         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5673         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5674         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5675         check_x86asm "CPU amdnop" || disable cpunop
5676     fi
5677
5678     case "$cpu" in
5679         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5680             disable fast_clz
5681         ;;
5682     esac
5683
5684 fi
5685
5686 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5687
5688 check_ldflags -Wl,--as-needed
5689 check_ldflags -Wl,-z,noexecstack
5690
5691 if ! disabled network; then
5692     check_func getaddrinfo $network_extralibs
5693     check_func inet_aton $network_extralibs
5694
5695     check_type netdb.h "struct addrinfo"
5696     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5697     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5698     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5699     check_type poll.h "struct pollfd"
5700     check_type netinet/sctp.h "struct sctp_event_subscribe"
5701     check_struct "sys/socket.h" "struct msghdr" msg_flags
5702     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5703     check_type netinet/in.h "struct sockaddr_in6"
5704     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5705     check_type "sys/types.h sys/socket.h" socklen_t
5706
5707     # Prefer arpa/inet.h over winsock2
5708     if check_header arpa/inet.h ; then
5709         check_func closesocket
5710     elif check_header winsock2.h ; then
5711         check_func_headers winsock2.h closesocket -lws2 &&
5712             network_extralibs="-lws2" ||
5713         { check_func_headers winsock2.h closesocket -lws2_32 &&
5714             network_extralibs="-lws2_32"; } || disable winsock2_h network
5715         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5716
5717         check_type ws2tcpip.h socklen_t
5718         check_type ws2tcpip.h "struct addrinfo"
5719         check_type ws2tcpip.h "struct group_source_req"
5720         check_type ws2tcpip.h "struct ip_mreq_source"
5721         check_type ws2tcpip.h "struct ipv6_mreq"
5722         check_type winsock2.h "struct pollfd"
5723         check_struct winsock2.h "struct sockaddr" sa_len
5724         check_type ws2tcpip.h "struct sockaddr_in6"
5725         check_type ws2tcpip.h "struct sockaddr_storage"
5726     else
5727         disable network
5728     fi
5729 fi
5730
5731 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5732 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5733 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5734 check_builtin sarestart signal.h "SA_RESTART"
5735 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5736 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5737 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5738 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5739
5740 case "$custom_allocator" in
5741     jemalloc)
5742         # jemalloc by default does not use a prefix
5743         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5744     ;;
5745     tcmalloc)
5746         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5747         malloc_prefix=tc_
5748     ;;
5749 esac
5750
5751 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5752 check_func  ${malloc_prefix}memalign            && enable memalign
5753 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5754
5755 check_func  access
5756 check_func_headers stdlib.h arc4random
5757 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5758 check_func  fcntl
5759 check_func  fork
5760 check_func  gethrtime
5761 check_func  getopt
5762 check_func  getrusage
5763 check_func  gettimeofday
5764 check_func  isatty
5765 check_func  mach_absolute_time
5766 check_func  mkstemp
5767 check_func  mmap
5768 check_func  mprotect
5769 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5770 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5771 check_func  sched_getaffinity
5772 check_func  setrlimit
5773 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5774 check_func  strerror_r
5775 check_func  sysconf
5776 check_func  sysctl
5777 check_func  usleep
5778
5779 check_func_headers conio.h kbhit
5780 check_func_headers io.h setmode
5781 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5782 check_func_headers stdlib.h getenv
5783 check_func_headers sys/stat.h lstat
5784
5785 check_func_headers windows.h GetProcessAffinityMask
5786 check_func_headers windows.h GetProcessTimes
5787 check_func_headers windows.h GetSystemTimeAsFileTime
5788 check_func_headers windows.h LoadLibrary
5789 check_func_headers windows.h MapViewOfFile
5790 check_func_headers windows.h PeekNamedPipe
5791 check_func_headers windows.h SetConsoleTextAttribute
5792 check_func_headers windows.h SetConsoleCtrlHandler
5793 check_func_headers windows.h Sleep
5794 check_func_headers windows.h VirtualAlloc
5795 check_struct windows.h "CONDITION_VARIABLE" Ptr
5796 check_func_headers glob.h glob
5797 enabled xlib &&
5798     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5799
5800 check_header d3d11.h
5801 check_header direct.h
5802 check_header dirent.h
5803 check_header dlfcn.h
5804 check_header dxgidebug.h
5805 check_header dxva.h
5806 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5807 check_header io.h
5808 check_header libcrystalhd/libcrystalhd_if.h
5809 check_header mach/mach_time.h
5810 check_header malloc.h
5811 check_header net/udplite.h
5812 check_header poll.h
5813 check_header sys/mman.h
5814 check_header sys/param.h
5815 check_header sys/resource.h
5816 check_header sys/select.h
5817 check_header sys/time.h
5818 check_header sys/un.h
5819 check_header termios.h
5820 check_header unistd.h
5821 check_header valgrind/valgrind.h
5822 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5823 check_header windows.h
5824 check_header X11/extensions/XvMClib.h
5825 check_header asm/types.h
5826
5827 # it seems there are versions of clang in some distros that try to use the
5828 # gcc headers, which explodes for stdatomic
5829 # so we also check that atomics actually work here
5830 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5831
5832 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5833 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5834 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5835 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5836
5837 enabled appkit       && check_apple_framework AppKit
5838 enabled audiotoolbox && check_apple_framework AudioToolbox
5839 enabled avfoundation && check_apple_framework AVFoundation
5840 enabled coreimage    && check_apple_framework CoreImage
5841 enabled videotoolbox && check_apple_framework VideoToolbox
5842
5843 check_apple_framework CoreFoundation
5844 check_apple_framework CoreMedia
5845 check_apple_framework CoreVideo
5846
5847 enabled avfoundation && {
5848     disable coregraphics applicationservices
5849     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5850     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5851
5852 enabled videotoolbox && {
5853     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5854     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5855 }
5856
5857 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5858
5859 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5860 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5861 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5862 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5863 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5864
5865 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5866 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5867 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5868 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5869 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5870 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5871 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5872 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5873 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5874
5875 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5876
5877 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5878
5879 if ! disabled w32threads && ! enabled pthreads; then
5880     check_func_headers "windows.h process.h" _beginthreadex &&
5881         enable w32threads || disable w32threads
5882     if ! enabled w32threads && enabled winrt; then
5883         check_func_headers "windows.h" CreateThread &&
5884             enable w32threads || disable w32threads
5885     fi
5886 fi
5887
5888 # check for some common methods of building with pthread support
5889 # do this before the optional library checks as some of them require pthreads
5890 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5891     if check_lib pthreads pthread.h pthread_join   -pthread &&
5892        check_lib pthreads pthread.h pthread_create -pthread; then
5893         add_cflags -pthread
5894     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5895          check_lib pthreads pthread.h pthread_create -pthreads; then
5896         add_cflags -pthreads
5897     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5898          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5899         add_cflags -ldl -pthread
5900     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5901          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5902         :
5903     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5904          check_lib pthreads pthread.h pthread_create -lpthread; then
5905         :
5906     elif check_func pthread_join && check_func pthread_create; then
5907         enable pthreads
5908     fi
5909     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5910 fi
5911
5912
5913 if enabled pthreads; then
5914   check_func pthread_cancel $pthreads_extralibs
5915 fi
5916
5917 enabled pthreads &&
5918     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5919
5920 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5921 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5922 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5923
5924 # On some systems dynamic loading requires no extra linker flags
5925 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5926
5927 check_lib libm math.h sin -lm
5928
5929 atan2f_args=2
5930 copysign_args=2
5931 hypot_args=2
5932 ldexpf_args=2
5933 powf_args=2
5934
5935 for func in $MATH_FUNCS; do
5936     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5937 done
5938
5939 for func in $COMPLEX_FUNCS; do
5940     eval check_complexfunc $func \${${func}_args:-1}
5941 done
5942
5943 # these are off by default, so fail if requested and not available
5944 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5945 enabled cuvid             && { enabled cuda ||
5946                                die "ERROR: CUVID requires CUDA"; }
5947 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5948 enabled decklink          && { require_header DeckLinkAPI.h &&
5949                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5950 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5951 enabled frei0r            && require_header frei0r.h
5952 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5953 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5954 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5955 enabled ladspa            && require_header ladspa.h
5956 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5957 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5958 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5959 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5960 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5961                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5962                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5963 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5964 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5965 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5966 enabled libfdk_aac        && { use_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5967                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5968                                  warn "using libfdk without pkg-config"; } }
5969 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"
5970 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5971 enabled fontconfig        && enable libfontconfig
5972 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5973 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5974 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5975 enabled libgme            && { use_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5976                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5977 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5978                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5979                                done || die "ERROR: libgsm not found"; }
5980 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5981 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5982 # While it may appear that require is being used as a pkg-config
5983 # fallback for libmfx, it is actually being used to detect a different
5984 # installation route altogether.  If libmfx is installed via the Intel
5985 # Media SDK or Intel Media Server Studio, these don't come with
5986 # pkg-config support.  Instead, users should make sure that the build
5987 # can find the libraries and headers through other means.
5988 enabled libmfx            && { use_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5989                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5990 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5991 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5992 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5993 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5994                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5995                                die "ERROR: libnpp not found"; }
5996 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5997 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5998 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5999                                { use_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6000                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6001                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6002 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6003 enabled libopenjpeg       && { use_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6004                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6005 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6006 enabled libopus           && {
6007     enabled libopus_decoder && {
6008         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6009     }
6010     enabled libopus_encoder && {
6011         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6012     }
6013 }
6014 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6015 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6016 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6017 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6018 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6019 enabled libsmbclient      && { use_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6020                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6021 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6022 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6023 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6024 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
6025 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6026 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6027 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6028                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6029                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6030 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6031 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6032 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
6033 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6034 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6035                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6036
6037 enabled libvpx            && {
6038     enabled libvpx_vp8_decoder && {
6039         use_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6040             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
6041                 die "ERROR: libvpx decoder version must be >=0.9.1";
6042     }
6043     enabled libvpx_vp8_encoder && {
6044         use_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6045             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
6046                 die "ERROR: libvpx encoder version must be >=0.9.7";
6047     }
6048     enabled libvpx_vp9_decoder && {
6049         use_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6050             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
6051     }
6052     enabled libvpx_vp9_encoder && {
6053         use_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6054             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6055     }
6056     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6057         die "libvpx enabled but no supported decoders found"
6058     fi
6059 }
6060
6061 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6062 enabled libwebp           && {
6063     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6064     enabled libwebp_anim_encoder && use_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6065 enabled libx264           && { use_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6066                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6067                                  warn "using libx264 without pkg-config"; } } &&
6068                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6069                              { check_cpp_condition x264.h "X264_MPEG2" &&
6070                                enable libx262; }
6071 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6072                              require_cpp_condition x265.h "X265_BUILD >= 68"
6073 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6074 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6075 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
6076 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6077 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6078                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6079                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6080 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6081 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6082 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6083                                { ! enabled cross_compile &&
6084                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6085                                  add_ldflags -L/opt/vc/lib/ &&
6086                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6087                                die "ERROR: mmal not found" &&
6088                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6089 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6090                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6091                                die "ERROR: openal not found"; } &&
6092                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6093                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6094 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6095                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6096                                die "ERROR: opencl not found"; } &&
6097                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6098                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6099                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6100 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6101                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6102                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6103                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6104                                die "ERROR: opengl not found."
6105                              }
6106 enabled omx               && require_header OMX_Core.h
6107 enabled omx_rpi           && { check_header OMX_Core.h ||
6108                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6109                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6110 enabled openssl           && { use_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6111                                use_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6112                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6113                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6114                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6115                                die "ERROR: openssl not found"; }
6116 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
6117                                  die "ERROR : Rockchip MPP was not found."; } &&
6118                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
6119                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
6120                                { enabled libdrm ||
6121                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6122                              }
6123
6124 if enabled gcrypt; then
6125     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6126     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6127         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6128         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6129         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6130             die "ERROR: gcrypt not found"
6131         add_cflags $gcrypt_cflags
6132     else
6133         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6134     fi
6135 fi
6136
6137 if enabled sdl2; then
6138     SDL2_CONFIG="${cross_prefix}sdl2-config"
6139     if check_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6140         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6141             disable sdl2
6142     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6143         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6144         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6145         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6146         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6147         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6148             enable sdl2
6149     fi
6150     if test $target_os = "mingw32"; then
6151         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6152     fi
6153 fi
6154
6155 if enabled decklink; then
6156     case $target_os in
6157         mingw32*|mingw64*|win32|win64)
6158             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6159             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6160             ;;
6161     esac
6162 fi
6163
6164 enabled securetransport &&
6165     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6166     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6167         disable securetransport
6168
6169 enabled schannel &&
6170     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6171     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6172     schannel_extralibs="-lsecur32" ||
6173         disable schannel
6174
6175 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6176 enabled makeinfo \
6177     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6178     && enable makeinfo_html || disable makeinfo_html
6179 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6180 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6181 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6182 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6183
6184 # check V4L2 codecs available in the API
6185 check_header linux/fb.h
6186 check_header linux/videodev2.h
6187 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6188 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6189 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6190 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6191 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6192 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6193 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6194 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6195 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6196 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6197 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6198
6199 check_header sys/videoio.h
6200 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6201
6202 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6203 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6204 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6205 # w32api 3.12 had it defined wrong
6206 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6207
6208 check_type "dshow.h" IBaseFilter
6209
6210 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6211 { check_header dev/bktr/ioctl_meteor.h &&
6212   check_header dev/bktr/ioctl_bt848.h; } ||
6213 { check_header machine/ioctl_meteor.h &&
6214   check_header machine/ioctl_bt848.h; } ||
6215 { check_header dev/video/meteor/ioctl_meteor.h &&
6216   check_header dev/video/bktr/ioctl_bt848.h; } ||
6217 check_header dev/ic/bt8xx.h
6218
6219 if check_struct sys/soundcard.h audio_buf_info bytes; then
6220     enable_sanitized sys/soundcard.h
6221 else
6222     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6223     #include <sys/soundcard.h>
6224     audio_buf_info abc;
6225 EOF
6226 fi
6227 check_header soundcard.h
6228
6229 enabled alsa && use_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6230     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6231
6232 enabled libjack &&
6233     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6234
6235 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6236
6237 if enabled libcdio; then
6238     use_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6239     use_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6240     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6241     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6242     die "ERROR: No usable libcdio/cdparanoia found"
6243 fi
6244
6245 enabled libxcb && use_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6246     disable libxcb_shm libxcb_shape libxcb_xfixes
6247
6248 if enabled libxcb; then
6249     enabled libxcb_shm    && use_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6250     enabled libxcb_shape  && use_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6251     enabled libxcb_xfixes && use_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6252 fi
6253
6254 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6255
6256 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6257 # the desktop api partition
6258 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6259 #ifdef WINAPI_FAMILY
6260 #include <winapifamily.h>
6261 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6262 #error desktop, not uwp
6263 #else
6264 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6265 #endif
6266 #else
6267 #error no family set
6268 #endif
6269 EOF
6270
6271 enabled vaapi &&
6272     check_lib vaapi va/va.h vaInitialize -lva
6273
6274 enabled vaapi &&
6275     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6276     disable vaapi
6277
6278 enabled vaapi &&
6279     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6280
6281 enabled vaapi &&
6282     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6283
6284 enabled vaapi &&
6285     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6286     enable vaapi_1
6287
6288 enabled vdpau &&
6289     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6290     disable vdpau
6291
6292 enabled vdpau &&
6293     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6294
6295 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6296
6297 if enabled x86; then
6298     case $target_os in
6299         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6300             ;;
6301         *)
6302             disable cuda cuvid nvenc
6303             ;;
6304     esac
6305 else
6306     disable cuda cuvid nvenc
6307 fi
6308
6309 enabled nvenc &&
6310     check_cc -I$source_path <<EOF || disable nvenc
6311 #include "compat/nvenc/nvEncodeAPI.h"
6312 NV_ENCODE_API_FUNCTION_LIST flist;
6313 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6314 int main(void) { return 0; }
6315 EOF
6316
6317 # Funny iconv installations are not unusual, so check it after all flags have been set
6318 if enabled libc_iconv; then
6319     check_func_headers iconv.h iconv
6320 elif enabled iconv; then
6321     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6322 fi
6323
6324 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6325
6326 # add some useful compiler flags if supported
6327 check_cflags -Wdeclaration-after-statement
6328 check_cflags -Wall
6329 check_cflags -Wdisabled-optimization
6330 check_cflags -Wpointer-arith
6331 check_cflags -Wredundant-decls
6332 check_cflags -Wwrite-strings
6333 check_cflags -Wtype-limits
6334 check_cflags -Wundef
6335 check_cflags -Wmissing-prototypes
6336 check_cflags -Wno-pointer-to-int-cast
6337 check_cflags -Wstrict-prototypes
6338 check_cflags -Wempty-body
6339
6340 if enabled extra_warnings; then
6341     check_cflags -Wcast-qual
6342     check_cflags -Wextra
6343     check_cflags -Wpedantic
6344 fi
6345
6346 check_disable_warning(){
6347     warning_flag=-W${1#-Wno-}
6348     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6349 }
6350
6351 test_cflags -Werror=unused-command-line-argument &&
6352     append unknown_warning_flags "-Werror=unused-command-line-argument"
6353 test_cflags -Werror=unknown-warning-option &&
6354     append unknown_warning_flags "-Werror=unknown-warning-option"
6355
6356 check_disable_warning -Wno-parentheses
6357 check_disable_warning -Wno-switch
6358 check_disable_warning -Wno-format-zero-length
6359 check_disable_warning -Wno-pointer-sign
6360 check_disable_warning -Wno-unused-const-variable
6361 check_disable_warning -Wno-bool-operation
6362
6363 check_disable_warning_headers(){
6364     warning_flag=-W${1#-Wno-}
6365     test_cflags $warning_flag && add_cflags_headers $1
6366 }
6367
6368 check_disable_warning_headers -Wno-deprecated-declarations
6369 check_disable_warning_headers -Wno-unused-variable
6370
6371 check_cc <<EOF && enable blocks_extension
6372 void (^block)(void);
6373 EOF
6374
6375 # add some linker flags
6376 check_ldflags -Wl,--warn-common
6377 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6378 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6379 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6380 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6381
6382 # add some strip flags
6383 check_stripflags -x
6384
6385 enabled neon_clobber_test &&
6386     check_ldflags -Wl,--wrap,avcodec_open2              \
6387                   -Wl,--wrap,avcodec_decode_audio4      \
6388                   -Wl,--wrap,avcodec_decode_video2      \
6389                   -Wl,--wrap,avcodec_decode_subtitle2   \
6390                   -Wl,--wrap,avcodec_encode_audio2      \
6391                   -Wl,--wrap,avcodec_encode_video2      \
6392                   -Wl,--wrap,avcodec_encode_subtitle    \
6393                   -Wl,--wrap,avcodec_send_packet        \
6394                   -Wl,--wrap,avcodec_receive_packet     \
6395                   -Wl,--wrap,avcodec_send_frame         \
6396                   -Wl,--wrap,avcodec_receive_frame      \
6397                   -Wl,--wrap,swr_convert                \
6398                   -Wl,--wrap,avresample_convert ||
6399     disable neon_clobber_test
6400
6401 enabled xmm_clobber_test &&
6402     check_ldflags -Wl,--wrap,avcodec_open2              \
6403                   -Wl,--wrap,avcodec_decode_audio4      \
6404                   -Wl,--wrap,avcodec_decode_video2      \
6405                   -Wl,--wrap,avcodec_decode_subtitle2   \
6406                   -Wl,--wrap,avcodec_encode_audio2      \
6407                   -Wl,--wrap,avcodec_encode_video2      \
6408                   -Wl,--wrap,avcodec_encode_subtitle    \
6409                   -Wl,--wrap,avcodec_send_packet        \
6410                   -Wl,--wrap,avcodec_receive_packet     \
6411                   -Wl,--wrap,avcodec_send_frame         \
6412                   -Wl,--wrap,avcodec_receive_frame      \
6413                   -Wl,--wrap,swr_convert                \
6414                   -Wl,--wrap,avresample_convert         \
6415                   -Wl,--wrap,sws_scale ||
6416     disable xmm_clobber_test
6417
6418 check_ld "cc" <<EOF && enable proper_dce
6419 extern const int array[512];
6420 static inline int func(void) { return array[0]; }
6421 int main(void) { return 0; }
6422 EOF
6423
6424 if enabled proper_dce; then
6425     echo "X { local: *; };" > $TMPV
6426     if test_ldflags -Wl,${version_script},$TMPV; then
6427         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6428         check_cc <<EOF && enable symver_asm_label
6429 void ff_foo(void) __asm__ ("av_foo@VERSION");
6430 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6431 EOF
6432         check_cc <<EOF && enable symver_gnu_asm
6433 __asm__(".symver ff_foo,av_foo@VERSION");
6434 void ff_foo(void) {}
6435 EOF
6436     fi
6437 fi
6438
6439 if [ -z "$optflags" ]; then
6440     if enabled small; then
6441         optflags=$cflags_size
6442     elif enabled optimizations; then
6443         optflags=$cflags_speed
6444     else
6445         optflags=$cflags_noopt
6446     fi
6447 fi
6448
6449 if [ -z "$nvccflags" ]; then
6450     nvccflags=$nvccflags_default
6451 fi
6452
6453 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6454     nvccflags="$nvccflags -m64"
6455 else
6456     nvccflags="$nvccflags -m32"
6457 fi
6458
6459 check_optflags(){
6460     check_cflags "$@"
6461     enabled lto && check_ldflags "$@"
6462 }
6463
6464 check_optflags $optflags
6465 check_optflags -fno-math-errno
6466 check_optflags -fno-signed-zeros
6467
6468 if enabled lto; then
6469     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6470     check_cflags  -flto
6471     check_ldflags -flto $cpuflags
6472     disable inline_asm_direct_symbol_refs
6473 fi
6474
6475 enabled ftrapv && check_cflags -ftrapv
6476
6477 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6478 int x;
6479 EOF
6480
6481
6482 if enabled icc; then
6483     # Just warnings, no remarks
6484     check_cflags -w1
6485     # -wd: Disable following warnings
6486     # 144, 167, 556: -Wno-pointer-sign
6487     # 188: enumerated type mixed with another type
6488     # 1292: attribute "foo" ignored
6489     # 1419: external declaration in primary source file
6490     # 10006: ignoring unknown option -fno-signed-zeros
6491     # 10148: ignoring unknown option -Wno-parentheses
6492     # 10156: ignoring option '-W'; no argument required
6493     # 13200: No EMMS instruction before call to function
6494     # 13203: No EMMS instruction before return from function
6495     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6496     # 11030: Warning unknown option --as-needed
6497     # 10156: ignoring option '-export'; no argument required
6498     check_ldflags -wd10156,11030
6499     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6500     enable ebp_available
6501     # The test above does not test linking
6502     enabled lto && disable symver_asm_label
6503     if enabled x86_32; then
6504         icc_version=$($cc -dumpversion)
6505         test ${icc_version%%.*} -ge 11 &&
6506             check_cflags -falign-stack=maintain-16-byte ||
6507             disable aligned_stack
6508     fi
6509 elif enabled ccc; then
6510     # disable some annoying warnings
6511     add_cflags -msg_disable bitnotint
6512     add_cflags -msg_disable mixfuncvoid
6513     add_cflags -msg_disable nonstandcast
6514     add_cflags -msg_disable unsupieee
6515 elif enabled gcc; then
6516     check_optflags -fno-tree-vectorize
6517     check_cflags -Werror=format-security
6518     check_cflags -Werror=implicit-function-declaration
6519     check_cflags -Werror=missing-prototypes
6520     check_cflags -Werror=return-type
6521     check_cflags -Werror=vla
6522     check_cflags -Wformat
6523     check_cflags -fdiagnostics-color=auto
6524     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6525 elif enabled llvm_gcc; then
6526     check_cflags -mllvm -stack-alignment=16
6527 elif enabled clang; then
6528     check_cflags -mllvm -stack-alignment=16
6529     check_cflags -mstack-alignment=16
6530     check_cflags -Qunused-arguments
6531     check_cflags -Werror=implicit-function-declaration
6532     check_cflags -Werror=missing-prototypes
6533     check_cflags -Werror=return-type
6534 elif enabled cparser; then
6535     add_cflags -Wno-missing-variable-declarations
6536     add_cflags -Wno-empty-statement
6537 elif enabled armcc; then
6538     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6539     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6540     # 2523: use of inline assembly is deprecated
6541     add_cflags -W${armcc_opt},--diag_suppress=2523
6542     add_cflags -W${armcc_opt},--diag_suppress=1207
6543     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6544     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6545     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6546     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6547 elif enabled tms470; then
6548     add_cflags -pds=824 -pds=837
6549     disable inline_asm
6550 elif enabled pathscale; then
6551     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6552     disable inline_asm
6553 elif enabled_any msvc icl; then
6554     enabled x86_32 && disable aligned_stack
6555     enabled_all x86_32 debug && add_cflags -Oy-
6556     enabled debug && add_ldflags -debug
6557     enable pragma_deprecated
6558     if enabled icl; then
6559         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6560         # (correctly) on icl 13.x.
6561         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6562             add_cflags -Qansi-alias
6563         # Some inline asm is not compilable in debug
6564         if enabled debug; then
6565             disable ebp_available
6566             disable ebx_available
6567         fi
6568     fi
6569     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6570     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6571     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6572     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6573     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6574     # MSVC 2013 and newer can handle it fine.
6575     # If this declspec fails, force including stdlib.h before the restrict redefinition
6576     # happens in config.h.
6577     if [ $_restrict != restrict ]; then
6578         check_cc <<EOF || add_cflags -FIstdlib.h
6579 __declspec($_restrict) void* foo(int);
6580 EOF
6581     fi
6582     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6583     # Issue has been fixed in MSVC v19.00.24218.
6584     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6585         check_cflags -d2SSAOptimizer-
6586     # enable utf-8 source processing on VS2015 U2 and newer
6587     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6588         add_cflags -utf-8
6589 fi
6590
6591 for pfx in "" host_; do
6592     varname=${pfx%_}cc_type
6593     eval "type=\$$varname"
6594     if [ "$type" = "msvc" ]; then
6595         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6596 static inline int foo(int a) { return a; }
6597 EOF
6598     fi
6599 done
6600
6601 case $as_type in
6602     clang)
6603         add_asflags -Qunused-arguments
6604     ;;
6605 esac
6606
6607 case $ld_type in
6608     clang)
6609         check_ldflags -Qunused-arguments
6610     ;;
6611 esac
6612
6613 case $target_os in
6614     osf1)
6615         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6616     ;;
6617 esac
6618
6619 enable frame_thread_encoder
6620
6621 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6622
6623 check_deps $CONFIG_LIST       \
6624            $CONFIG_EXTRA      \
6625            $HAVE_LIST         \
6626            $ALL_COMPONENTS    \
6627
6628 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"
6629
6630
6631 if test $target_os = "haiku"; then
6632     disable memalign
6633     disable posix_memalign
6634 fi
6635
6636 flatten_extralibs(){
6637     unset nested_entries
6638     list_name=$1
6639     eval list=\$${1}
6640     for entry in $list; do
6641         entry_copy=$entry
6642         resolve entry_copy
6643         append nested_entries $(filter '*_extralibs' $entry_copy)
6644         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6645         eval $entry="\$flat_entries"
6646     done
6647     append $list_name "$nested_entries"
6648
6649     resolve nested_entries
6650     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6651         flatten_extralibs $list_name
6652     fi
6653 }
6654
6655 for linkunit in $LIBRARY_LIST; do
6656     unset current_extralibs
6657     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6658     for comp in ${components}; do
6659         enabled $comp || continue
6660         comp_extralibs="${comp}_extralibs"
6661         append current_extralibs $comp_extralibs
6662     done
6663     eval prepend ${linkunit}_extralibs $current_extralibs
6664 done
6665
6666 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6667     flatten_extralibs ${linkunit}_extralibs
6668     unique  ${linkunit}_extralibs
6669     resolve ${linkunit}_extralibs
6670     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
6671 done
6672
6673 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6674
6675 for thread in $THREADS_LIST; do
6676     if enabled $thread; then
6677         test -n "$thread_type" &&
6678             die "ERROR: Only one thread type must be selected." ||
6679             thread_type="$thread"
6680     fi
6681 done
6682
6683 if disabled stdatomic_h; then
6684     if enabled atomics_gcc; then
6685         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6686     elif enabled atomics_win32; then
6687         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6688     elif enabled atomics_suncc; then
6689         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6690     elif enabled pthreads; then
6691         add_compat atomics/pthread/stdatomic.o
6692         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6693     else
6694         enabled threads && die "Threading is enabled, but no atomics are available"
6695         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6696     fi
6697 fi
6698
6699 # Check if requested libraries were found.
6700 for lib in $AUTODETECT_LIBS; do
6701     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6702 done
6703
6704 enabled zlib && add_cppflags -DZLIB_CONST
6705
6706 # conditional library dependencies, in linking order
6707 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6708 enabled afir_filter         && prepend avfilter_deps "avcodec"
6709 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6710 enabled aresample_filter    && prepend avfilter_deps "swresample"
6711 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6712 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6713 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6714 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6715 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6716 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6717 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6718 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6719 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6720 enabled pan_filter          && prepend avfilter_deps "swresample"
6721 enabled pp_filter           && prepend avfilter_deps "postproc"
6722 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6723 enabled resample_filter && prepend avfilter_deps "avresample"
6724 enabled sab_filter          && prepend avfilter_deps "swscale"
6725 enabled scale_filter    && prepend avfilter_deps "swscale"
6726 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6727 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6728 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6729 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6730 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6731 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6732 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6733 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6734 enabled spp_filter          && prepend avfilter_deps "avcodec"
6735 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6736 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6737 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6738
6739 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6740
6741 #FIXME
6742 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6743
6744 enabled opus_decoder    && prepend avcodec_deps "swresample"
6745
6746 expand_deps(){
6747     lib_deps=${1}_deps
6748     eval "deps=\$$lib_deps"
6749     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6750     unique $lib_deps
6751 }
6752
6753 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6754 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6755
6756 map 'expand_deps $v' $LIBRARY_LIST
6757
6758 license="LGPL version 2.1 or later"
6759 if enabled nonfree; then
6760     license="nonfree and unredistributable"
6761 elif enabled gplv3; then
6762     license="GPL version 3 or later"
6763 elif enabled lgplv3; then
6764     license="LGPL version 3 or later"
6765 elif enabled gpl; then
6766     license="GPL version 2 or later"
6767 fi
6768
6769 if test "$quiet" != "yes"; then
6770
6771 echo "install prefix            $prefix"
6772 echo "source path               $source_path"
6773 echo "C compiler                $cc"
6774 echo "C library                 $libc_type"
6775 if test "$host_cc" != "$cc"; then
6776     echo "host C compiler           $host_cc"
6777     echo "host C library            $host_libc_type"
6778 fi
6779 echo "ARCH                      $arch ($cpu)"
6780 if test "$build_suffix" != ""; then
6781     echo "build suffix              $build_suffix"
6782 fi
6783 if test "$progs_suffix" != ""; then
6784     echo "progs suffix              $progs_suffix"
6785 fi
6786 if test "$extra_version" != ""; then
6787     echo "version string suffix     $extra_version"
6788 fi
6789 echo "big-endian                ${bigendian-no}"
6790 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6791 if enabled x86; then
6792     echo "standalone assembly       ${x86asm-no}"
6793     echo "x86 assembler             ${x86asmexe}"
6794     echo "MMX enabled               ${mmx-no}"
6795     echo "MMXEXT enabled            ${mmxext-no}"
6796     echo "3DNow! enabled            ${amd3dnow-no}"
6797     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6798     echo "SSE enabled               ${sse-no}"
6799     echo "SSSE3 enabled             ${ssse3-no}"
6800     echo "AESNI enabled             ${aesni-no}"
6801     echo "AVX enabled               ${avx-no}"
6802     echo "AVX2 enabled              ${avx2-no}"
6803     echo "XOP enabled               ${xop-no}"
6804     echo "FMA3 enabled              ${fma3-no}"
6805     echo "FMA4 enabled              ${fma4-no}"
6806     echo "i686 features enabled     ${i686-no}"
6807     echo "CMOV is fast              ${fast_cmov-no}"
6808     echo "EBX available             ${ebx_available-no}"
6809     echo "EBP available             ${ebp_available-no}"
6810 fi
6811 if enabled aarch64; then
6812     echo "NEON enabled              ${neon-no}"
6813     echo "VFP enabled               ${vfp-no}"
6814 fi
6815 if enabled arm; then
6816     echo "ARMv5TE enabled           ${armv5te-no}"
6817     echo "ARMv6 enabled             ${armv6-no}"
6818     echo "ARMv6T2 enabled           ${armv6t2-no}"
6819     echo "VFP enabled               ${vfp-no}"
6820     echo "NEON enabled              ${neon-no}"
6821     echo "THUMB enabled             ${thumb-no}"
6822 fi
6823 if enabled mips; then
6824     echo "MIPS FPU enabled          ${mipsfpu-no}"
6825     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6826     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6827     echo "MIPS MSA enabled          ${msa-no}"
6828     echo "LOONGSON MMI enabled      ${mmi-no}"
6829 fi
6830 if enabled ppc; then
6831     echo "AltiVec enabled           ${altivec-no}"
6832     echo "VSX enabled               ${vsx-no}"
6833     echo "POWER8 enabled            ${power8-no}"
6834     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6835     echo "dcbzl available           ${dcbzl-no}"
6836 fi
6837 echo "debug symbols             ${debug-no}"
6838 echo "strip symbols             ${stripping-no}"
6839 echo "optimize for size         ${small-no}"
6840 echo "optimizations             ${optimizations-no}"
6841 echo "static                    ${static-no}"
6842 echo "shared                    ${shared-no}"
6843 echo "postprocessing support    ${postproc-no}"
6844 echo "network support           ${network-no}"
6845 echo "threading support         ${thread_type-no}"
6846 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6847 echo "texi2html enabled         ${texi2html-no}"
6848 echo "perl enabled              ${perl-no}"
6849 echo "pod2man enabled           ${pod2man-no}"
6850 echo "makeinfo enabled          ${makeinfo-no}"
6851 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6852 test -n "$random_seed" &&
6853     echo "random seed               ${random_seed}"
6854 echo
6855
6856 echo "External libraries:"
6857 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6858 echo
6859
6860 echo "External libraries providing hardware acceleration:"
6861 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6862 echo
6863
6864 echo "Libraries:"
6865 print_enabled '' $LIBRARY_LIST | print_in_columns
6866 echo
6867
6868 echo "Programs:"
6869 print_enabled '' $PROGRAM_LIST | print_in_columns
6870 echo
6871
6872 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6873     echo "Enabled ${type}s:"
6874     eval list=\$$(toupper $type)_LIST
6875     print_enabled '_*' $list | print_in_columns
6876     echo
6877 done
6878
6879 if test -n "$ignore_tests"; then
6880     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6881     echo "Ignored FATE tests:"
6882     echo $ignore_tests | print_in_columns
6883     echo
6884 fi
6885
6886 echo "License: $license"
6887
6888 echo "Creating configuration files ..."
6889
6890 fi # test "$quiet" != "yes"
6891
6892 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6893
6894 enabled stripping || strip="echo skipping strip"
6895 enabled stripping || striptype=""
6896
6897 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6898
6899 cat > ffbuild/config.mak <<EOF
6900 # Automatically generated by configure - do not modify!
6901 ifndef FFMPEG_CONFIG_MAK
6902 FFMPEG_CONFIG_MAK=1
6903 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6904 prefix=$prefix
6905 LIBDIR=\$(DESTDIR)$libdir
6906 SHLIBDIR=\$(DESTDIR)$shlibdir
6907 INCDIR=\$(DESTDIR)$incdir
6908 BINDIR=\$(DESTDIR)$bindir
6909 DATADIR=\$(DESTDIR)$datadir
6910 DOCDIR=\$(DESTDIR)$docdir
6911 MANDIR=\$(DESTDIR)$mandir
6912 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6913 INSTALL_NAME_DIR=$install_name_dir
6914 SRC_PATH=$source_path
6915 SRC_LINK=$source_link
6916 ifndef MAIN_MAKEFILE
6917 SRC_PATH:=\$(SRC_PATH:.%=..%)
6918 endif
6919 CC_IDENT=$cc_ident
6920 ARCH=$arch
6921 INTRINSICS=$intrinsics
6922 CC=$cc
6923 CXX=$cxx
6924 AS=$as
6925 OBJCC=$objcc
6926 LD=$ld
6927 DEPCC=$dep_cc
6928 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6929 DEPAS=$as
6930 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6931 X86ASM=$x86asmexe
6932 DEPX86ASM=$x86asmexe
6933 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6934 AR=$ar
6935 ARFLAGS=$arflags
6936 AR_O=$ar_o
6937 RANLIB=$ranlib
6938 STRIP=$strip
6939 STRIPTYPE=$striptype
6940 NVCC=$nvcc
6941 CP=cp -p
6942 LN_S=$ln_s
6943 CPPFLAGS=$CPPFLAGS
6944 CFLAGS=$CFLAGS
6945 CXXFLAGS=$CXXFLAGS
6946 OBJCFLAGS=$OBJCFLAGS
6947 ASFLAGS=$ASFLAGS
6948 NVCCFLAGS=$nvccflags
6949 AS_C=$AS_C
6950 AS_O=$AS_O
6951 OBJCC_C=$OBJCC_C
6952 OBJCC_E=$OBJCC_E
6953 OBJCC_O=$OBJCC_O
6954 CC_C=$CC_C
6955 CC_E=$CC_E
6956 CC_O=$CC_O
6957 CXX_C=$CXX_C
6958 CXX_O=$CXX_O
6959 NVCC_C=$NVCC_C
6960 NVCC_O=$NVCC_O
6961 LD_O=$LD_O
6962 X86ASM_O=$X86ASM_O
6963 LD_LIB=$LD_LIB
6964 LD_PATH=$LD_PATH
6965 DLLTOOL=$dlltool
6966 WINDRES=$windres
6967 DEPWINDRES=$dep_cc
6968 DOXYGEN=$doxygen
6969 LDFLAGS=$LDFLAGS
6970 LDEXEFLAGS=$LDEXEFLAGS
6971 LDLIBFLAGS=$LDLIBFLAGS
6972 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6973 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6974 X86ASMFLAGS=$X86ASMFLAGS
6975 BUILDSUF=$build_suffix
6976 PROGSSUF=$progs_suffix
6977 FULLNAME=$FULLNAME
6978 LIBPREF=$LIBPREF
6979 LIBSUF=$LIBSUF
6980 LIBNAME=$LIBNAME
6981 SLIBPREF=$SLIBPREF
6982 SLIBSUF=$SLIBSUF
6983 EXESUF=$EXESUF
6984 EXTRA_VERSION=$extra_version
6985 CCDEP=$CCDEP
6986 CXXDEP=$CXXDEP
6987 CCDEP_FLAGS=$CCDEP_FLAGS
6988 ASDEP=$ASDEP
6989 ASDEP_FLAGS=$ASDEP_FLAGS
6990 X86ASMDEP=$X86ASMDEP
6991 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6992 CC_DEPFLAGS=$CC_DEPFLAGS
6993 AS_DEPFLAGS=$AS_DEPFLAGS
6994 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6995 HOSTCC=$host_cc
6996 HOSTLD=$host_ld
6997 HOSTCFLAGS=$host_cflags
6998 HOSTCPPFLAGS=$host_cppflags
6999 HOSTEXESUF=$HOSTEXESUF
7000 HOSTLDFLAGS=$host_ldflags
7001 HOSTEXTRALIBS=$host_extralibs
7002 DEPHOSTCC=$host_cc
7003 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7004 HOSTCCDEP=$HOSTCCDEP
7005 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7006 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7007 HOSTCC_C=$HOSTCC_C
7008 HOSTCC_O=$HOSTCC_O
7009 HOSTLD_O=$HOSTLD_O
7010 TARGET_EXEC=$target_exec $target_exec_args
7011 TARGET_PATH=$target_path
7012 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7013 CFLAGS-ffplay=${sdl2_cflags}
7014 CFLAGS_HEADERS=$CFLAGS_HEADERS
7015 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7016 EXTRALIBS=$extralibs
7017 COMPAT_OBJS=$compat_objs
7018 INSTALL=$install
7019 LIBTARGET=${LIBTARGET}
7020 SLIBNAME=${SLIBNAME}
7021 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7022 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7023 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7024 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7025 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7026 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7027 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7028 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7029 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7030 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7031 NOREDZONE_FLAGS=$noredzone_flags
7032 LIBFUZZER_PATH=$libfuzzer_path
7033 IGNORE_TESTS=$ignore_tests
7034 EOF
7035
7036 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7037
7038 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7039     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7040 done
7041
7042 cat > $TMPH <<EOF
7043 /* Automatically generated by configure - do not modify! */
7044 #ifndef FFMPEG_CONFIG_H
7045 #define FFMPEG_CONFIG_H
7046 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7047 #define FFMPEG_LICENSE "$(c_escape $license)"
7048 #define CONFIG_THIS_YEAR 2017
7049 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7050 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7051 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7052 #define av_restrict $_restrict
7053 #define EXTERN_PREFIX "${extern_prefix}"
7054 #define EXTERN_ASM ${extern_prefix}
7055 #define BUILDSUF "$build_suffix"
7056 #define SLIBSUF "$SLIBSUF"
7057 #define HAVE_MMX2 HAVE_MMXEXT
7058 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7059 EOF
7060
7061 test -n "$assert_level" &&
7062     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7063
7064 test -n "$malloc_prefix" &&
7065     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7066
7067 if enabled x86asm; then
7068     append config_files $TMPASM
7069     printf '' >$TMPASM
7070 fi
7071
7072 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7073
7074
7075 mkdir -p doc
7076 mkdir -p tests
7077 mkdir -p tests/api
7078 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7079
7080 print_config ARCH_   "$config_files" $ARCH_LIST
7081 print_config HAVE_   "$config_files" $HAVE_LIST
7082 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7083                                      $CONFIG_EXTRA      \
7084                                      $ALL_COMPONENTS    \
7085
7086 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7087 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7088
7089 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7090 cp_if_changed $TMPH config.h
7091 touch ffbuild/.config
7092
7093 enabled x86asm && cp_if_changed $TMPASM config.asm
7094
7095 cat > $TMPH <<EOF
7096 /* Generated by ffconf */
7097 #ifndef AVUTIL_AVCONFIG_H
7098 #define AVUTIL_AVCONFIG_H
7099 EOF
7100
7101 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7102
7103 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7104
7105 cp_if_changed $TMPH libavutil/avconfig.h
7106
7107 # generate the lists of enabled components
7108 print_enabled_components(){
7109     file=$1
7110     struct_name=$2
7111     name=$3
7112     shift 3
7113     echo "static const $struct_name * const $name[] = {" > $TMPH
7114     for c in $*; do
7115         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7116     done
7117     echo "    NULL };" >> $TMPH
7118     cp_if_changed $TMPH $file
7119 }
7120
7121 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7122 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7123
7124 if test -n "$WARNINGS"; then
7125     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7126     enabled fatal_warnings && exit 1
7127 fi
7128
7129 # Settings for pkg-config files
7130
7131 cat > ffbuild/config.sh <<EOF
7132 # Automatically generated by configure - do not modify!
7133 shared=$shared
7134 build_suffix=$build_suffix
7135 prefix=$prefix
7136 libdir=$libdir
7137 incdir=$incdir
7138 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7139 source_path=${source_path}
7140 LIBPREF=${LIBPREF}
7141 LIBSUF=${LIBSUF}
7142 extralibs_avutil="$avutil_extralibs"
7143 extralibs_avcodec="$avcodec_extralibs"
7144 extralibs_avformat="$avformat_extralibs"
7145 extralibs_avdevice="$avdevice_extralibs"
7146 extralibs_avfilter="$avfilter_extralibs"
7147 extralibs_avresample="$avresample_extralibs"
7148 extralibs_postproc="$postproc_extralibs"
7149 extralibs_swscale="$swscale_extralibs"
7150 extralibs_swresample="$swresample_extralibs"
7151 EOF
7152
7153 for lib in $LIBRARY_LIST; do
7154     lib_deps="$(eval echo \$${lib}_deps)"
7155     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7156 done