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     arpa_inet_h
1912     asm_types_h
1913     cdio_paranoia_h
1914     cdio_paranoia_paranoia_h
1915     cuda_h
1916     d3d11_h
1917     dispatch_dispatch_h
1918     dev_bktr_ioctl_bt848_h
1919     dev_bktr_ioctl_meteor_h
1920     dev_ic_bt8xx_h
1921     dev_video_bktr_ioctl_bt848_h
1922     dev_video_meteor_ioctl_meteor_h
1923     direct_h
1924     dirent_h
1925     dlfcn_h
1926     dxgidebug_h
1927     dxva_h
1928     ES2_gl_h
1929     gsm_h
1930     io_h
1931     mach_mach_time_h
1932     machine_ioctl_bt848_h
1933     machine_ioctl_meteor_h
1934     malloc_h
1935     opencv2_core_core_c_h
1936     OpenGL_gl3_h
1937     poll_h
1938     soundcard_h
1939     stdatomic_h
1940     sys_mman_h
1941     sys_param_h
1942     sys_resource_h
1943     sys_select_h
1944     sys_soundcard_h
1945     sys_time_h
1946     sys_un_h
1947     sys_videoio_h
1948     termios_h
1949     udplite_h
1950     unistd_h
1951     valgrind_valgrind_h
1952     windows_h
1953     winsock2_h
1954 "
1955
1956 INTRINSICS_LIST="
1957     intrinsics_neon
1958 "
1959
1960 COMPLEX_FUNCS="
1961     cabs
1962     cexp
1963 "
1964
1965 MATH_FUNCS="
1966     atanf
1967     atan2f
1968     cbrt
1969     cbrtf
1970     copysign
1971     cosf
1972     erf
1973     exp2
1974     exp2f
1975     expf
1976     hypot
1977     isfinite
1978     isinf
1979     isnan
1980     ldexpf
1981     llrint
1982     llrintf
1983     log2
1984     log2f
1985     log10f
1986     lrint
1987     lrintf
1988     powf
1989     rint
1990     round
1991     roundf
1992     sinf
1993     trunc
1994     truncf
1995 "
1996
1997 SYSTEM_FUNCS="
1998     access
1999     aligned_malloc
2000     arc4random
2001     clock_gettime
2002     closesocket
2003     CommandLineToArgvW
2004     CoTaskMemFree
2005     CryptGenRandom
2006     fcntl
2007     flt_lim
2008     fork
2009     getaddrinfo
2010     gethrtime
2011     getopt
2012     GetProcessAffinityMask
2013     GetProcessMemoryInfo
2014     GetProcessTimes
2015     getrusage
2016     GetSystemTimeAsFileTime
2017     gettimeofday
2018     glob
2019     glXGetProcAddress
2020     gmtime_r
2021     inet_aton
2022     isatty
2023     kbhit
2024     LoadLibrary
2025     localtime_r
2026     lstat
2027     lzo1x_999_compress
2028     mach_absolute_time
2029     MapViewOfFile
2030     memalign
2031     mkstemp
2032     mmap
2033     mprotect
2034     nanosleep
2035     PeekNamedPipe
2036     posix_memalign
2037     pthread_cancel
2038     sched_getaffinity
2039     SetConsoleTextAttribute
2040     SetConsoleCtrlHandler
2041     setmode
2042     setrlimit
2043     Sleep
2044     strerror_r
2045     sysconf
2046     sysctl
2047     usleep
2048     UTGetOSTypeFromString
2049     VirtualAlloc
2050     wglGetProcAddress
2051 "
2052
2053 TOOLCHAIN_FEATURES="
2054     as_arch_directive
2055     as_fpu_directive
2056     as_func
2057     as_object_arch
2058     asm_mod_q
2059     attribute_may_alias
2060     attribute_packed
2061     blocks_extension
2062     ebp_available
2063     ebx_available
2064     gnu_as
2065     gnu_windres
2066     ibm_asm
2067     inline_asm_direct_symbol_refs
2068     inline_asm_labels
2069     inline_asm_nonlocal_labels
2070     pragma_deprecated
2071     rsync_contimeout
2072     symver_asm_label
2073     symver_gnu_asm
2074     vfp_args
2075     xform_asm
2076     xmm_clobbers
2077 "
2078
2079 TYPES_LIST="
2080     CONDITION_VARIABLE_Ptr
2081     kCMVideoCodecType_HEVC
2082     socklen_t
2083     struct_addrinfo
2084     struct_group_source_req
2085     struct_ip_mreq_source
2086     struct_ipv6_mreq
2087     struct_msghdr_msg_flags
2088     struct_pollfd
2089     struct_rusage_ru_maxrss
2090     struct_sctp_event_subscribe
2091     struct_sockaddr_in6
2092     struct_sockaddr_sa_len
2093     struct_sockaddr_storage
2094     struct_stat_st_mtim_tv_nsec
2095     struct_v4l2_frmivalenum_discrete
2096 "
2097
2098 HAVE_LIST="
2099     $ARCH_EXT_LIST
2100     $(add_suffix _external $ARCH_EXT_LIST)
2101     $(add_suffix _inline   $ARCH_EXT_LIST)
2102     $ARCH_FEATURES
2103     $ATOMICS_LIST
2104     $BUILTIN_LIST
2105     $COMPLEX_FUNCS
2106     $HAVE_LIST_CMDLINE
2107     $HAVE_LIST_PUB
2108     $HEADERS_LIST
2109     $INTRINSICS_LIST
2110     $MATH_FUNCS
2111     $SYSTEM_FUNCS
2112     $THREADS_LIST
2113     $TOOLCHAIN_FEATURES
2114     $TYPES_LIST
2115     atomics_native
2116     dos_paths
2117     libc_msvcrt
2118     makeinfo
2119     makeinfo_html
2120     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2121     perl
2122     pod2man
2123     section_data_rel_ro
2124     texi2html
2125     threads
2126     uwp
2127     vaapi_drm
2128     vaapi_x11
2129     vdpau_x11
2130     winrt
2131 "
2132
2133 # options emitted with CONFIG_ prefix but not available on the command line
2134 CONFIG_EXTRA="
2135     aandcttables
2136     ac3dsp
2137     adts_header
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 altivec_deps="ppc"
2327 dcbzl_deps="ppc"
2328 ldbrx_deps="ppc"
2329 ppc4xx_deps="ppc"
2330 vsx_deps="altivec"
2331 power8_deps="vsx"
2332
2333 loongson2_deps="mips"
2334 loongson3_deps="mips"
2335 mips32r2_deps="mips"
2336 mips32r5_deps="mips"
2337 mips32r6_deps="mips"
2338 mips64r2_deps="mips"
2339 mips64r6_deps="mips"
2340 mipsfpu_deps="mips"
2341 mipsdsp_deps="mips"
2342 mipsdspr2_deps="mips"
2343 mmi_deps="mips"
2344 msa_deps="mipsfpu"
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 x86"
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"
2407 faandct_select="fdctdsp"
2408 faanidct_deps="faan"
2409 faanidct_select="idctdsp"
2410 h264dsp_select="startcode"
2411 hevcparse_select="golomb"
2412 frame_thread_encoder_deps="encoders threads"
2413 intrax8_select="blockdsp idctdsp"
2414 mdct_select="fft"
2415 mdct15_select="fft"
2416 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2417 mpeg_er_select="error_resilience"
2418 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2419 mpegaudiodsp_select="dct"
2420 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2421 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2422 vc1dsp_select="h264chroma qpeldsp startcode"
2423 rdft_select="fft"
2424
2425 # decoders / encoders
2426 aac_decoder_select="adts_header mdct15 mdct sinewin"
2427 aac_fixed_decoder_select="mdct sinewin"
2428 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2429 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2430 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2431 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2432 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2433 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2434 adpcm_g722_decoder_select="g722dsp"
2435 adpcm_g722_encoder_select="g722dsp"
2436 aic_decoder_select="golomb idctdsp"
2437 alac_encoder_select="lpc"
2438 als_decoder_select="bswapdsp"
2439 amrnb_decoder_select="lsp"
2440 amrwb_decoder_select="lsp"
2441 amv_decoder_select="sp5x_decoder exif"
2442 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2443 ape_decoder_select="bswapdsp llauddsp"
2444 apng_decoder_select="zlib"
2445 apng_encoder_select="llvidencdsp zlib"
2446 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2447 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2448 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2449 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2450 atrac1_decoder_select="mdct sinewin"
2451 atrac3_decoder_select="mdct"
2452 atrac3p_decoder_select="mdct sinewin"
2453 avrn_decoder_select="exif jpegtables"
2454 bink_decoder_select="blockdsp hpeldsp"
2455 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2456 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2457 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2458 clearvideo_decoder_select="idctdsp"
2459 cllc_decoder_select="bswapdsp"
2460 comfortnoise_encoder_select="lpc"
2461 cook_decoder_select="audiodsp mdct sinewin"
2462 cscd_decoder_select="lzo"
2463 cscd_decoder_suggest="zlib"
2464 dca_decoder_select="mdct"
2465 dds_decoder_select="texturedsp"
2466 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2467 dnxhd_decoder_select="blockdsp idctdsp"
2468 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2469 dolby_e_decoder_select="mdct"
2470 dvvideo_decoder_select="dvprofile idctdsp"
2471 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2472 dxa_decoder_select="zlib"
2473 dxv_decoder_select="lzf texturedsp"
2474 eac3_decoder_select="ac3_decoder"
2475 eac3_encoder_select="ac3_encoder"
2476 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2477 eatgq_decoder_select="aandcttables"
2478 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2479 exr_decoder_select="zlib"
2480 ffv1_decoder_select="rangecoder"
2481 ffv1_encoder_select="rangecoder"
2482 ffvhuff_decoder_select="huffyuv_decoder"
2483 ffvhuff_encoder_select="huffyuv_encoder"
2484 fic_decoder_select="golomb"
2485 flac_decoder_select="flacdsp"
2486 flac_encoder_select="bswapdsp flacdsp lpc"
2487 flashsv2_decoder_select="zlib"
2488 flashsv2_encoder_select="zlib"
2489 flashsv_decoder_select="zlib"
2490 flashsv_encoder_select="zlib"
2491 flv_decoder_select="h263_decoder"
2492 flv_encoder_select="h263_encoder"
2493 fourxm_decoder_select="blockdsp bswapdsp"
2494 fraps_decoder_select="bswapdsp huffman"
2495 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2496 g729_decoder_select="audiodsp"
2497 h261_decoder_select="mpegvideo"
2498 h261_encoder_select="aandcttables mpegvideoenc"
2499 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2500 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2501 h263i_decoder_select="h263_decoder"
2502 h263p_decoder_select="h263_decoder"
2503 h263p_encoder_select="h263_encoder"
2504 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2505 h264_decoder_suggest="error_resilience"
2506 hap_decoder_select="snappy texturedsp"
2507 hap_encoder_deps="libsnappy"
2508 hap_encoder_select="texturedspenc"
2509 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2510 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2511 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2512 iac_decoder_select="imc_decoder"
2513 imc_decoder_select="bswapdsp fft mdct sinewin"
2514 indeo3_decoder_select="hpeldsp"
2515 indeo4_decoder_select="ividsp"
2516 indeo5_decoder_select="ividsp"
2517 interplay_video_decoder_select="hpeldsp"
2518 jpegls_decoder_select="mjpeg_decoder"
2519 jv_decoder_select="blockdsp"
2520 lagarith_decoder_select="llviddsp"
2521 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2522 magicyuv_decoder_select="llviddsp"
2523 magicyuv_encoder_select="llvidencdsp"
2524 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2525 metasound_decoder_select="lsp mdct sinewin"
2526 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2527 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2528 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2529 mjpegb_decoder_select="mjpeg_decoder"
2530 mlp_decoder_select="mlp_parser"
2531 mlp_encoder_select="lpc"
2532 motionpixels_decoder_select="bswapdsp"
2533 mp1_decoder_select="mpegaudio"
2534 mp1float_decoder_select="mpegaudio"
2535 mp2_decoder_select="mpegaudio"
2536 mp2float_decoder_select="mpegaudio"
2537 mp3_decoder_select="mpegaudio"
2538 mp3adu_decoder_select="mpegaudio"
2539 mp3adufloat_decoder_select="mpegaudio"
2540 mp3float_decoder_select="mpegaudio"
2541 mp3on4_decoder_select="mpegaudio"
2542 mp3on4float_decoder_select="mpegaudio"
2543 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2544 mpc8_decoder_select="mpegaudiodsp"
2545 mpegvideo_decoder_select="mpegvideo"
2546 mpeg1video_decoder_select="mpegvideo"
2547 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2548 mpeg2video_decoder_select="mpegvideo"
2549 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2550 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2551 mpeg4_encoder_select="h263_encoder"
2552 msa1_decoder_select="mss34dsp"
2553 mscc_decoder_select="zlib"
2554 msmpeg4v1_decoder_select="h263_decoder"
2555 msmpeg4v2_decoder_select="h263_decoder"
2556 msmpeg4v2_encoder_select="h263_encoder"
2557 msmpeg4v3_decoder_select="h263_decoder"
2558 msmpeg4v3_encoder_select="h263_encoder"
2559 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2560 mts2_decoder_select="mss34dsp"
2561 mxpeg_decoder_select="mjpeg_decoder"
2562 nellymoser_decoder_select="mdct sinewin"
2563 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2564 nuv_decoder_select="idctdsp lzo"
2565 on2avc_decoder_select="mdct"
2566 opus_decoder_deps="swresample"
2567 opus_decoder_select="mdct15"
2568 opus_encoder_select="audio_frame_queue mdct15"
2569 png_decoder_select="zlib"
2570 png_encoder_select="llvidencdsp zlib"
2571 prores_decoder_select="blockdsp idctdsp"
2572 prores_encoder_select="fdctdsp"
2573 qcelp_decoder_select="lsp"
2574 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2575 ra_144_decoder_select="audiodsp"
2576 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2577 ralf_decoder_select="golomb"
2578 rawvideo_decoder_select="bswapdsp"
2579 rscc_decoder_select="zlib"
2580 rtjpeg_decoder_select="me_cmp"
2581 rv10_decoder_select="h263_decoder"
2582 rv10_encoder_select="h263_encoder"
2583 rv20_decoder_select="h263_decoder"
2584 rv20_encoder_select="h263_encoder"
2585 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2586 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2587 screenpresso_decoder_select="zlib"
2588 shorten_decoder_select="bswapdsp"
2589 sipr_decoder_select="lsp"
2590 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2591 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2592 sonic_decoder_select="golomb rangecoder"
2593 sonic_encoder_select="golomb rangecoder"
2594 sonic_ls_encoder_select="golomb rangecoder"
2595 sp5x_decoder_select="mjpeg_decoder"
2596 srgc_decoder_select="zlib"
2597 svq1_decoder_select="hpeldsp"
2598 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2599 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2600 svq3_decoder_suggest="zlib"
2601 tak_decoder_select="audiodsp"
2602 tdsc_decoder_select="zlib mjpeg_decoder"
2603 theora_decoder_select="vp3_decoder"
2604 thp_decoder_select="mjpeg_decoder"
2605 tiff_decoder_suggest="zlib lzma"
2606 tiff_encoder_suggest="zlib"
2607 truehd_decoder_select="mlp_parser"
2608 truehd_encoder_select="lpc"
2609 truemotion2_decoder_select="bswapdsp"
2610 truespeech_decoder_select="bswapdsp"
2611 tscc_decoder_select="zlib"
2612 twinvq_decoder_select="mdct lsp sinewin"
2613 txd_decoder_select="texturedsp"
2614 utvideo_decoder_select="bswapdsp llviddsp"
2615 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2616 vble_decoder_select="llviddsp"
2617 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
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_vaapi_hwaccel_deps="vaapi"
2722 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_vdpau_hwaccel_deps="vdpau"
2724 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2726 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_xvmc_hwaccel_deps="xvmc"
2728 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2729 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2730 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2731 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2732 mpeg4_mmal_hwaccel_deps="mmal"
2733 mpeg4_vaapi_hwaccel_deps="vaapi"
2734 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2735 mpeg4_vdpau_hwaccel_deps="vdpau"
2736 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2737 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2738 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2739 vc1_cuvid_hwaccel_deps="cuda cuvid"
2740 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2741 vc1_d3d11va_hwaccel_deps="d3d11va"
2742 vc1_d3d11va_hwaccel_select="vc1_decoder"
2743 vc1_d3d11va2_hwaccel_deps="d3d11va"
2744 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2745 vc1_dxva2_hwaccel_deps="dxva2"
2746 vc1_dxva2_hwaccel_select="vc1_decoder"
2747 vc1_mmal_hwaccel_deps="mmal"
2748 vc1_qsv_hwaccel_deps="libmfx"
2749 vc1_vaapi_hwaccel_deps="vaapi"
2750 vc1_vaapi_hwaccel_select="vc1_decoder"
2751 vc1_vdpau_hwaccel_deps="vdpau"
2752 vc1_vdpau_hwaccel_select="vc1_decoder"
2753 vp8_cuvid_hwaccel_deps="cuda cuvid"
2754 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2755 vp9_cuvid_hwaccel_deps="cuda cuvid"
2756 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2757 vp8_mediacodec_hwaccel_deps="mediacodec"
2758 vp8_qsv_hwaccel_deps="libmfx"
2759 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2760 vp9_d3d11va_hwaccel_select="vp9_decoder"
2761 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2762 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2763 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2764 vp9_dxva2_hwaccel_select="vp9_decoder"
2765 vp9_mediacodec_hwaccel_deps="mediacodec"
2766 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2767 vp9_vaapi_hwaccel_select="vp9_decoder"
2768 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2769 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2770 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2771 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2772 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2773
2774 # hardware-accelerated codecs
2775 omx_deps="libdl pthreads"
2776 omx_rpi_select="omx"
2777 qsv_deps="libmfx"
2778 qsvdec_select="qsv"
2779 qsvenc_select="qsv"
2780 vaapi_encode_deps="vaapi"
2781 v4l2_m2m_deps_any="linux_videodev2_h"
2782
2783 hwupload_cuda_filter_deps="cuda"
2784 scale_npp_filter_deps="cuda libnpp"
2785 scale_cuda_filter_deps="cuda_sdk"
2786 thumbnail_cuda_filter_deps="cuda_sdk"
2787
2788 nvenc_deps="cuda"
2789 nvenc_deps_any="libdl LoadLibrary"
2790 nvenc_encoder_deps="nvenc"
2791
2792 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2793 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2794 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2795 h264_cuvid_decoder_deps="cuda cuvid"
2796 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2797 h264_mediacodec_decoder_deps="mediacodec"
2798 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2799 h264_mmal_decoder_deps="mmal"
2800 h264_nvenc_encoder_deps="nvenc"
2801 h264_omx_encoder_deps="omx"
2802 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2803 h264_qsv_encoder_select="qsvenc"
2804 h264_rkmpp_decoder_deps="rkmpp"
2805 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2806 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2807 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2808 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2809 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2810 hevc_cuvid_decoder_deps="cuda cuvid"
2811 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2812 hevc_mediacodec_decoder_deps="mediacodec"
2813 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2814 hevc_nvenc_encoder_deps="nvenc"
2815 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2816 hevc_qsv_encoder_select="hevcparse qsvenc"
2817 hevc_rkmpp_decoder_deps="rkmpp"
2818 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2819 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2820 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2821 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2822 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2823 mjpeg_cuvid_decoder_deps="cuda cuvid"
2824 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2825 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2826 mpeg1_cuvid_decoder_deps="cuda cuvid"
2827 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2828 mpeg2_crystalhd_decoder_select="crystalhd"
2829 mpeg2_cuvid_decoder_deps="cuda cuvid"
2830 mpeg2_mmal_decoder_deps="mmal"
2831 mpeg2_mediacodec_decoder_deps="mediacodec"
2832 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2833 mpeg2_qsv_encoder_select="qsvenc"
2834 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2835 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2836 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2837 mpeg4_crystalhd_decoder_select="crystalhd"
2838 mpeg4_cuvid_decoder_deps="cuda cuvid"
2839 mpeg4_mediacodec_decoder_deps="mediacodec"
2840 mpeg4_mmal_decoder_deps="mmal"
2841 mpeg4_omx_encoder_deps="omx"
2842 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2843 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2844 msmpeg4_crystalhd_decoder_select="crystalhd"
2845 nvenc_h264_encoder_select="h264_nvenc_encoder"
2846 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2847 vc1_crystalhd_decoder_select="crystalhd"
2848 vc1_cuvid_decoder_deps="cuda cuvid"
2849 vc1_mmal_decoder_deps="mmal"
2850 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2851 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2852 vp8_cuvid_decoder_deps="cuda cuvid"
2853 vp8_mediacodec_decoder_deps="mediacodec"
2854 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2855 vp8_rkmpp_decoder_deps="rkmpp"
2856 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2857 vp8_vaapi_encoder_select="vaapi_encode"
2858 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2859 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2860 vp9_cuvid_decoder_deps="cuda cuvid"
2861 vp9_mediacodec_decoder_deps="mediacodec"
2862 vp9_rkmpp_decoder_deps="rkmpp"
2863 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2864 vp9_vaapi_encoder_select="vaapi_encode"
2865 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2866 wmv3_crystalhd_decoder_select="crystalhd"
2867
2868 # parsers
2869 aac_parser_select="adts_header"
2870 h264_parser_select="golomb h264dsp h264parse"
2871 hevc_parser_select="hevcparse"
2872 mpegaudio_parser_select="mpegaudioheader"
2873 mpegvideo_parser_select="mpegvideo"
2874 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2875 vc1_parser_select="vc1dsp"
2876
2877 # bitstream_filters
2878 aac_adtstoasc_bsf_select="adts_header"
2879 h264_metadata_bsf_select="cbs_h264"
2880 h264_redundant_pps_bsf_select="cbs_h264"
2881 hevc_metadata_bsf_select="cbs_h265"
2882 mjpeg2jpeg_bsf_select="jpegtables"
2883 mpeg2_metadata_bsf_select="cbs_mpeg2"
2884 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2885
2886 # external libraries
2887 aac_at_decoder_deps="audiotoolbox"
2888 ac3_at_decoder_deps="audiotoolbox"
2889 ac3_at_decoder_select="ac3_parser"
2890 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2891 alac_at_decoder_deps="audiotoolbox"
2892 amr_nb_at_decoder_deps="audiotoolbox"
2893 avisynth_deps_any="libdl LoadLibrary"
2894 avisynth_demuxer_deps="avisynth"
2895 avisynth_demuxer_select="riffdec"
2896 eac3_at_decoder_deps="audiotoolbox"
2897 eac3_at_decoder_select="ac3_parser"
2898 gsm_ms_at_decoder_deps="audiotoolbox"
2899 ilbc_at_decoder_deps="audiotoolbox"
2900 mp1_at_decoder_deps="audiotoolbox"
2901 mp2_at_decoder_deps="audiotoolbox"
2902 mp3_at_decoder_deps="audiotoolbox"
2903 mp1_at_decoder_select="mpegaudioheader"
2904 mp2_at_decoder_select="mpegaudioheader"
2905 mp3_at_decoder_select="mpegaudioheader"
2906 pcm_alaw_at_decoder_deps="audiotoolbox"
2907 pcm_mulaw_at_decoder_deps="audiotoolbox"
2908 qdmc_at_decoder_deps="audiotoolbox"
2909 qdm2_at_decoder_deps="audiotoolbox"
2910 aac_at_encoder_deps="audiotoolbox"
2911 aac_at_encoder_select="audio_frame_queue"
2912 alac_at_encoder_deps="audiotoolbox"
2913 alac_at_encoder_select="audio_frame_queue"
2914 ilbc_at_encoder_deps="audiotoolbox"
2915 ilbc_at_encoder_select="audio_frame_queue"
2916 pcm_alaw_at_encoder_deps="audiotoolbox"
2917 pcm_alaw_at_encoder_select="audio_frame_queue"
2918 pcm_mulaw_at_encoder_deps="audiotoolbox"
2919 pcm_mulaw_at_encoder_select="audio_frame_queue"
2920 chromaprint_muxer_deps="chromaprint"
2921 h264_videotoolbox_encoder_deps="pthreads"
2922 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2923 libcelt_decoder_deps="libcelt"
2924 libfdk_aac_decoder_deps="libfdk_aac"
2925 libfdk_aac_encoder_deps="libfdk_aac"
2926 libfdk_aac_encoder_select="audio_frame_queue"
2927 libgme_demuxer_deps="libgme"
2928 libgsm_decoder_deps="libgsm"
2929 libgsm_encoder_deps="libgsm"
2930 libgsm_ms_decoder_deps="libgsm"
2931 libgsm_ms_encoder_deps="libgsm"
2932 libilbc_decoder_deps="libilbc"
2933 libilbc_encoder_deps="libilbc"
2934 libkvazaar_encoder_deps="libkvazaar"
2935 libmodplug_demuxer_deps="libmodplug"
2936 libmp3lame_encoder_deps="libmp3lame"
2937 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2938 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2939 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2940 libopencore_amrnb_encoder_select="audio_frame_queue"
2941 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2942 libopenh264_decoder_deps="libopenh264"
2943 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2944 libopenh264_encoder_deps="libopenh264"
2945 libopenjpeg_decoder_deps="libopenjpeg"
2946 libopenjpeg_encoder_deps="libopenjpeg"
2947 libopenmpt_demuxer_deps="libopenmpt"
2948 libopus_decoder_deps="libopus"
2949 libopus_encoder_deps="libopus"
2950 libopus_encoder_select="audio_frame_queue"
2951 librsvg_decoder_deps="librsvg"
2952 libshine_encoder_deps="libshine"
2953 libshine_encoder_select="audio_frame_queue"
2954 libspeex_decoder_deps="libspeex"
2955 libspeex_encoder_deps="libspeex"
2956 libspeex_encoder_select="audio_frame_queue"
2957 libtheora_encoder_deps="libtheora"
2958 libtwolame_encoder_deps="libtwolame"
2959 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2960 libvorbis_decoder_deps="libvorbis"
2961 libvorbis_encoder_deps="libvorbis libvorbisenc"
2962 libvorbis_encoder_select="audio_frame_queue"
2963 libvpx_vp8_decoder_deps="libvpx"
2964 libvpx_vp8_encoder_deps="libvpx"
2965 libvpx_vp9_decoder_deps="libvpx"
2966 libvpx_vp9_encoder_deps="libvpx"
2967 libwavpack_encoder_deps="libwavpack"
2968 libwavpack_encoder_select="audio_frame_queue"
2969 libwebp_encoder_deps="libwebp"
2970 libwebp_anim_encoder_deps="libwebp"
2971 libx262_encoder_deps="libx262"
2972 libx264_encoder_deps="libx264"
2973 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2974 libx264rgb_encoder_select="libx264_encoder"
2975 libx265_encoder_deps="libx265"
2976 libxavs_encoder_deps="libxavs"
2977 libxvid_encoder_deps="libxvid"
2978 libzvbi_teletext_decoder_deps="libzvbi"
2979 videotoolbox_suggest="coreservices"
2980 videotoolbox_deps="corefoundation coremedia corevideo"
2981 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2982
2983 # demuxers / muxers
2984 ac3_demuxer_select="ac3_parser"
2985 aiff_muxer_select="iso_media"
2986 asf_demuxer_select="riffdec"
2987 asf_o_demuxer_select="riffdec"
2988 asf_muxer_select="riffenc"
2989 asf_stream_muxer_select="asf_muxer"
2990 avi_demuxer_select="iso_media riffdec exif"
2991 avi_muxer_select="riffenc"
2992 caf_demuxer_select="iso_media riffdec"
2993 caf_muxer_select="iso_media"
2994 dash_muxer_select="mp4_muxer"
2995 dash_demuxer_deps="libxml2"
2996 dirac_demuxer_select="dirac_parser"
2997 dts_demuxer_select="dca_parser"
2998 dtshd_demuxer_select="dca_parser"
2999 dv_demuxer_select="dvprofile"
3000 dv_muxer_select="dvprofile"
3001 dxa_demuxer_select="riffdec"
3002 eac3_demuxer_select="ac3_parser"
3003 f4v_muxer_select="mov_muxer"
3004 fifo_muxer_deps="threads"
3005 flac_demuxer_select="flac_parser"
3006 hds_muxer_select="flv_muxer"
3007 hls_muxer_select="mpegts_muxer"
3008 hls_muxer_suggest="gcrypt openssl"
3009 image2_alias_pix_demuxer_select="image2_demuxer"
3010 image2_brender_pix_demuxer_select="image2_demuxer"
3011 ipod_muxer_select="mov_muxer"
3012 ismv_muxer_select="mov_muxer"
3013 matroska_audio_muxer_select="matroska_muxer"
3014 matroska_demuxer_select="iso_media riffdec"
3015 matroska_demuxer_suggest="bzlib lzo zlib"
3016 matroska_muxer_select="iso_media riffenc"
3017 mmf_muxer_select="riffenc"
3018 mov_demuxer_select="iso_media riffdec"
3019 mov_demuxer_suggest="zlib"
3020 mov_muxer_select="iso_media riffenc rtpenc_chain"
3021 mp3_demuxer_select="mpegaudio_parser"
3022 mp3_muxer_select="mpegaudioheader"
3023 mp4_muxer_select="mov_muxer"
3024 mpegts_demuxer_select="iso_media"
3025 mpegts_muxer_select="adts_muxer latm_muxer"
3026 mpegtsraw_demuxer_select="mpegts_demuxer"
3027 mxf_d10_muxer_select="mxf_muxer"
3028 mxf_opatom_muxer_select="mxf_muxer"
3029 nut_muxer_select="riffenc"
3030 nuv_demuxer_select="riffdec"
3031 oga_muxer_select="ogg_muxer"
3032 ogg_demuxer_select="dirac_parse"
3033 ogv_muxer_select="ogg_muxer"
3034 opus_muxer_select="ogg_muxer"
3035 psp_muxer_select="mov_muxer"
3036 rtp_demuxer_select="sdp_demuxer"
3037 rtp_muxer_select="golomb"
3038 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3039 rtsp_demuxer_select="http_protocol rtpdec"
3040 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3041 sap_demuxer_select="sdp_demuxer"
3042 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3043 sdp_demuxer_select="rtpdec"
3044 smoothstreaming_muxer_select="ismv_muxer"
3045 spdif_demuxer_select="adts_header"
3046 spdif_muxer_select="adts_header"
3047 spx_muxer_select="ogg_muxer"
3048 swf_demuxer_suggest="zlib"
3049 tak_demuxer_select="tak_parser"
3050 tg2_muxer_select="mov_muxer"
3051 tgp_muxer_select="mov_muxer"
3052 vobsub_demuxer_select="mpegps_demuxer"
3053 w64_demuxer_select="wav_demuxer"
3054 w64_muxer_select="wav_muxer"
3055 wav_demuxer_select="riffdec"
3056 wav_muxer_select="riffenc"
3057 webm_muxer_select="iso_media riffenc"
3058 webm_dash_manifest_demuxer_select="matroska_demuxer"
3059 wtv_demuxer_select="mpegts_demuxer riffdec"
3060 wtv_muxer_select="mpegts_muxer riffenc"
3061 xmv_demuxer_select="riffdec"
3062 xwma_demuxer_select="riffdec"
3063
3064 # indevs / outdevs
3065 alsa_indev_deps="alsa"
3066 alsa_outdev_deps="alsa"
3067 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3068 avfoundation_indev_suggest="coregraphics applicationservices"
3069 avfoundation_indev_extralibs="-framework Foundation"
3070 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3071 caca_outdev_deps="libcaca"
3072 decklink_deps_any="libdl LoadLibrary"
3073 decklink_indev_deps="decklink threads"
3074 decklink_indev_extralibs="-lstdc++"
3075 decklink_outdev_deps="decklink threads"
3076 decklink_outdev_extralibs="-lstdc++"
3077 libndi_newtek_indev_deps="libndi_newtek"
3078 libndi_newtek_indev_extralibs="-lndi"
3079 libndi_newtek_outdev_deps="libndi_newtek"
3080 libndi_newtek_outdev_extralibs="-lndi"
3081 dshow_indev_deps="IBaseFilter"
3082 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3083 fbdev_indev_deps="linux_fb_h"
3084 fbdev_outdev_deps="linux_fb_h"
3085 gdigrab_indev_deps="CreateDIBSection"
3086 gdigrab_indev_extralibs="-lgdi32"
3087 gdigrab_indev_select="bmp_decoder"
3088 iec61883_indev_deps="libiec61883"
3089 jack_indev_deps="libjack"
3090 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3091 kmsgrab_indev_deps="libdrm"
3092 lavfi_indev_deps="avfilter"
3093 libcdio_indev_deps="libcdio"
3094 libdc1394_indev_deps="libdc1394"
3095 openal_indev_deps="openal"
3096 opengl_outdev_deps="opengl"
3097 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3098 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3099 pulse_indev_deps="libpulse"
3100 pulse_outdev_deps="libpulse"
3101 sdl2_outdev_deps="sdl2"
3102 sndio_indev_deps="sndio"
3103 sndio_outdev_deps="sndio"
3104 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3105 v4l2_indev_suggest="libv4l2"
3106 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3107 v4l2_outdev_suggest="libv4l2"
3108 vfwcap_indev_deps="vfw32 vfwcap_defines"
3109 xcbgrab_indev_deps="libxcb"
3110 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3111 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3112 xv_outdev_extralibs="-lXv -lX11 -lXext"
3113
3114 # protocols
3115 async_protocol_deps="threads"
3116 bluray_protocol_deps="libbluray"
3117 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3118 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3119 ffrtmpcrypt_protocol_select="tcp_protocol"
3120 ffrtmphttp_protocol_conflict="librtmp_protocol"
3121 ffrtmphttp_protocol_select="http_protocol"
3122 ftp_protocol_select="tcp_protocol"
3123 gopher_protocol_select="network"
3124 http_protocol_select="tcp_protocol"
3125 http_protocol_suggest="zlib"
3126 httpproxy_protocol_select="tcp_protocol"
3127 httpproxy_protocol_suggest="zlib"
3128 https_protocol_select="tls_protocol"
3129 https_protocol_suggest="zlib"
3130 icecast_protocol_select="http_protocol"
3131 librtmp_protocol_deps="librtmp"
3132 librtmpe_protocol_deps="librtmp"
3133 librtmps_protocol_deps="librtmp"
3134 librtmpt_protocol_deps="librtmp"
3135 librtmpte_protocol_deps="librtmp"
3136 libsmbclient_protocol_deps="libsmbclient gplv3"
3137 libssh_protocol_deps="libssh"
3138 mmsh_protocol_select="http_protocol"
3139 mmst_protocol_select="network"
3140 rtmp_protocol_conflict="librtmp_protocol"
3141 rtmp_protocol_select="tcp_protocol"
3142 rtmp_protocol_suggest="zlib"
3143 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3144 rtmpe_protocol_suggest="zlib"
3145 rtmps_protocol_conflict="librtmp_protocol"
3146 rtmps_protocol_select="tls_protocol"
3147 rtmps_protocol_suggest="zlib"
3148 rtmpt_protocol_select="ffrtmphttp_protocol"
3149 rtmpt_protocol_suggest="zlib"
3150 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3151 rtmpte_protocol_suggest="zlib"
3152 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3153 rtmpts_protocol_suggest="zlib"
3154 rtp_protocol_select="udp_protocol"
3155 schannel_conflict="openssl gnutls"
3156 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3157 sctp_protocol_select="network"
3158 securetransport_conflict="openssl gnutls"
3159 srtp_protocol_select="rtp_protocol srtp"
3160 tcp_protocol_select="network"
3161 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3162 tls_protocol_select="tcp_protocol"
3163 udp_protocol_select="network"
3164 udplite_protocol_select="network"
3165 unix_protocol_deps="sys_un_h"
3166 unix_protocol_select="network"
3167
3168 # filters
3169 afftfilt_filter_deps="avcodec"
3170 afftfilt_filter_select="fft"
3171 afir_filter_deps="avcodec"
3172 afir_filter_select="fft"
3173 amovie_filter_deps="avcodec avformat"
3174 aresample_filter_deps="swresample"
3175 ass_filter_deps="libass"
3176 atempo_filter_deps="avcodec"
3177 atempo_filter_select="rdft"
3178 azmq_filter_deps="libzmq"
3179 blackframe_filter_deps="gpl"
3180 boxblur_filter_deps="gpl"
3181 bs2b_filter_deps="libbs2b"
3182 colormatrix_filter_deps="gpl"
3183 coreimage_filter_deps="coreimage appkit"
3184 coreimage_filter_extralibs="-framework OpenGL"
3185 coreimagesrc_filter_deps="coreimage appkit"
3186 coreimagesrc_filter_extralibs="-framework OpenGL"
3187 cover_rect_filter_deps="avcodec avformat gpl"
3188 cropdetect_filter_deps="gpl"
3189 deinterlace_qsv_filter_deps="libmfx"
3190 deinterlace_vaapi_filter_deps="vaapi"
3191 delogo_filter_deps="gpl"
3192 deshake_filter_select="pixelutils"
3193 deshake_filter_suggest="opencl"
3194 drawtext_filter_deps="libfreetype"
3195 drawtext_filter_suggest="libfontconfig libfribidi"
3196 elbg_filter_deps="avcodec"
3197 eq_filter_deps="gpl"
3198 fftfilt_filter_deps="avcodec"
3199 fftfilt_filter_select="rdft"
3200 find_rect_filter_deps="avcodec avformat gpl"
3201 firequalizer_filter_deps="avcodec"
3202 firequalizer_filter_select="rdft"
3203 flite_filter_deps="libflite"
3204 framerate_filter_select="pixelutils"
3205 frei0r_filter_deps="frei0r libdl"
3206 frei0r_src_filter_deps="frei0r libdl"
3207 fspp_filter_deps="gpl"
3208 geq_filter_deps="gpl"
3209 histeq_filter_deps="gpl"
3210 hqdn3d_filter_deps="gpl"
3211 interlace_filter_deps="gpl"
3212 kerndeint_filter_deps="gpl"
3213 ladspa_filter_deps="ladspa libdl"
3214 mcdeint_filter_deps="avcodec gpl"
3215 movie_filter_deps="avcodec avformat"
3216 mpdecimate_filter_deps="gpl"
3217 mpdecimate_filter_select="pixelutils"
3218 mptestsrc_filter_deps="gpl"
3219 negate_filter_deps="lut_filter"
3220 nnedi_filter_deps="gpl"
3221 ocr_filter_deps="libtesseract"
3222 ocv_filter_deps="libopencv"
3223 owdenoise_filter_deps="gpl"
3224 pan_filter_deps="swresample"
3225 perspective_filter_deps="gpl"
3226 phase_filter_deps="gpl"
3227 pp7_filter_deps="gpl"
3228 pp_filter_deps="gpl postproc"
3229 pullup_filter_deps="gpl"
3230 removelogo_filter_deps="avcodec avformat swscale"
3231 repeatfields_filter_deps="gpl"
3232 resample_filter_deps="avresample"
3233 rubberband_filter_deps="librubberband"
3234 sab_filter_deps="gpl swscale"
3235 scale2ref_filter_deps="swscale"
3236 scale_filter_deps="swscale"
3237 scale_qsv_filter_deps="libmfx"
3238 select_filter_select="pixelutils"
3239 showcqt_filter_deps="avcodec avformat swscale"
3240 showcqt_filter_suggest="libfontconfig libfreetype"
3241 showcqt_filter_select="fft"
3242 showfreqs_filter_deps="avcodec"
3243 showfreqs_filter_select="fft"
3244 showspectrum_filter_deps="avcodec"
3245 showspectrum_filter_select="fft"
3246 showspectrumpic_filter_deps="avcodec"
3247 showspectrumpic_filter_select="fft"
3248 signature_filter_deps="gpl avcodec avformat"
3249 smartblur_filter_deps="gpl swscale"
3250 sofalizer_filter_deps="libmysofa avcodec"
3251 sofalizer_filter_select="fft"
3252 spectrumsynth_filter_deps="avcodec"
3253 spectrumsynth_filter_select="fft"
3254 spp_filter_deps="gpl avcodec"
3255 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3256 stereo3d_filter_deps="gpl"
3257 subtitles_filter_deps="avformat avcodec libass"
3258 super2xsai_filter_deps="gpl"
3259 pixfmts_super2xsai_test_deps="super2xsai_filter"
3260 tinterlace_filter_deps="gpl"
3261 tinterlace_merge_test_deps="tinterlace_filter"
3262 tinterlace_pad_test_deps="tinterlace_filter"
3263 tonemap_filter_deps="const_nan"
3264 uspp_filter_deps="gpl avcodec"
3265 unsharp_filter_suggest="opencl"
3266 vaguedenoiser_filter_deps="gpl"
3267 vidstabdetect_filter_deps="libvidstab"
3268 vidstabtransform_filter_deps="libvidstab"
3269 libvmaf_filter_deps="libvmaf"
3270 zmq_filter_deps="libzmq"
3271 zoompan_filter_deps="swscale"
3272 zscale_filter_deps="libzimg const_nan"
3273 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3274
3275 # examples
3276 avio_dir_cmd_deps="avformat avutil"
3277 avio_reading_deps="avformat avcodec avutil"
3278 decode_audio_example_deps="avcodec avutil"
3279 decode_video_example_deps="avcodec avutil"
3280 demuxing_decoding_example_deps="avcodec avformat avutil"
3281 encode_audio_example_deps="avcodec avutil"
3282 encode_video_example_deps="avcodec avutil"
3283 extract_mvs_example_deps="avcodec avformat avutil"
3284 filter_audio_example_deps="avfilter avutil"
3285 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3286 filtering_video_example_deps="avfilter avcodec avformat avutil"
3287 http_multiclient_example_deps="avformat avutil fork"
3288 hw_decode_example_deps="avcodec avformat avutil"
3289 metadata_example_deps="avformat avutil"
3290 muxing_example_deps="avcodec avformat avutil swscale"
3291 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3292 remuxing_example_deps="avcodec avformat avutil"
3293 resampling_audio_example_deps="avutil swresample"
3294 scaling_video_example_deps="avutil swscale"
3295 transcode_aac_example_deps="avcodec avformat swresample"
3296 transcoding_example_deps="avfilter avcodec avformat avutil"
3297
3298 # EXTRALIBS_LIST
3299 cpu_init_extralibs="pthreads_extralibs"
3300 cws2fws_extralibs="zlib_extralibs"
3301
3302 # libraries, in linking order
3303 avcodec_deps="avutil"
3304 avcodec_suggest="libm"
3305 avcodec_select="null_bsf"
3306 avdevice_deps="avformat avcodec avutil"
3307 avdevice_suggest="libm"
3308 avfilter_deps="avutil"
3309 avfilter_suggest="libm"
3310 avformat_deps="avcodec avutil"
3311 avformat_suggest="libm network zlib"
3312 avresample_deps="avutil"
3313 avresample_suggest="libm"
3314 avutil_suggest="clock_gettime libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3315 postproc_deps="avutil gpl"
3316 postproc_suggest="libm"
3317 swresample_deps="avutil"
3318 swresample_suggest="libm libsoxr"
3319 swscale_deps="avutil"
3320 swscale_suggest="libm"
3321
3322 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3323 avfilter_extralibs="pthreads_extralibs"
3324 avutil_extralibs="nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3325
3326 # programs
3327 ffmpeg_deps="avcodec avfilter avformat swresample"
3328 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3329                null_filter
3330                trim_filter"
3331 ffmpeg_suggest="ole32 psapi shell32"
3332 ffplay_deps="avcodec avformat swscale swresample sdl2"
3333 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3334 ffplay_suggest="shell32"
3335 ffprobe_deps="avcodec avformat"
3336 ffprobe_suggest="shell32"
3337 ffserver_deps="avformat fork sarestart"
3338 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3339
3340 # documentation
3341 podpages_deps="perl"
3342 manpages_deps="perl pod2man"
3343 htmlpages_deps="perl"
3344 htmlpages_deps_any="makeinfo_html texi2html"
3345 txtpages_deps="perl makeinfo"
3346 doc_deps_any="manpages htmlpages podpages txtpages"
3347
3348 # default parameters
3349
3350 logfile="ffbuild/config.log"
3351
3352 # installation paths
3353 prefix_default="/usr/local"
3354 bindir_default='${prefix}/bin'
3355 datadir_default='${prefix}/share/ffmpeg'
3356 docdir_default='${prefix}/share/doc/ffmpeg'
3357 incdir_default='${prefix}/include'
3358 libdir_default='${prefix}/lib'
3359 mandir_default='${prefix}/share/man'
3360
3361 # toolchain
3362 ar_default="ar"
3363 cc_default="gcc"
3364 cxx_default="g++"
3365 host_cc_default="gcc"
3366 doxygen_default="doxygen"
3367 install="install"
3368 ln_s_default="ln -s -f"
3369 nm_default="nm -g"
3370 pkg_config_default=pkg-config
3371 ranlib_default="ranlib"
3372 strip_default="strip"
3373 version_script='--version-script'
3374 x86asmexe_default="nasm"
3375 windres_default="windres"
3376 nvcc_default="nvcc"
3377 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3378 striptype="direct"
3379
3380 # OS
3381 target_os_default=$(tolower $(uname -s))
3382 host_os=$target_os_default
3383
3384 # machine
3385 if test "$target_os_default" = aix; then
3386     arch_default=$(uname -p)
3387     strip_default="strip -X32_64"
3388 else
3389     arch_default=$(uname -m)
3390 fi
3391 cpu="generic"
3392 intrinsics="none"
3393
3394 # configurable options
3395 enable $PROGRAM_LIST
3396 enable $DOCUMENT_LIST
3397 enable $EXAMPLE_LIST
3398 enable $(filter_out avresample $LIBRARY_LIST)
3399 enable stripping
3400
3401 enable asm
3402 enable debug
3403 enable doc
3404 enable faan faandct faanidct
3405 enable optimizations
3406 enable runtime_cpudetect
3407 enable safe_bitstream_reader
3408 enable static
3409 enable swscale_alpha
3410 enable valgrind_backtrace
3411
3412 sws_max_filter_size_default=256
3413 set_default sws_max_filter_size
3414
3415 # internal components are enabled by default
3416 enable $EXTRALIBS_LIST
3417
3418 # Avoid external, non-system, libraries getting enabled by dependency resolution
3419 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3420
3421 # build settings
3422 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3423 LIBPREF="lib"
3424 LIBSUF=".a"
3425 FULLNAME='$(NAME)$(BUILDSUF)'
3426 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3427 SLIBPREF="lib"
3428 SLIBSUF=".so"
3429 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3430 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3431 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3432 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3433 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3434 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3435 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3436
3437 asflags_filter=echo
3438 cflags_filter=echo
3439 ldflags_filter=echo
3440
3441 AS_C='-c'
3442 AS_O='-o $@'
3443 CC_C='-c'
3444 CC_E='-E -o $@'
3445 CC_O='-o $@'
3446 CXX_C='-c'
3447 CXX_O='-o $@'
3448 OBJCC_C='-c'
3449 OBJCC_E='-E -o $@'
3450 OBJCC_O='-o $@'
3451 X86ASM_O='-o $@'
3452 LD_O='-o $@'
3453 LD_LIB='-l%'
3454 LD_PATH='-L'
3455 HOSTCC_C='-c'
3456 HOSTCC_E='-E -o $@'
3457 HOSTCC_O='-o $@'
3458 HOSTLD_O='-o $@'
3459 NVCC_C='-c'
3460 NVCC_O='-o $@'
3461
3462 host_extralibs='-lm'
3463 host_cflags_filter=echo
3464 host_ldflags_filter=echo
3465
3466 target_path='$(CURDIR)'
3467
3468 # since the object filename is not given with the -MM flag, the compiler
3469 # is only able to print the basename, and we must add the path ourselves
3470 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3471 DEPFLAGS='-MM'
3472
3473 mkdir -p ffbuild
3474
3475 # find source path
3476 if test -f configure; then
3477     source_path=.
3478 else
3479     source_path=$(cd $(dirname "$0"); pwd)
3480     case "$source_path" in
3481         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3482     esac
3483     test -e "$source_path/config.h" &&
3484         die "Out of tree builds are impossible with config.h in source dir."
3485 fi
3486
3487 for v in "$@"; do
3488     r=${v#*=}
3489     l=${v%"$r"}
3490     r=$(sh_quote "$r")
3491     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3492 done
3493
3494 find_things(){
3495     thing=$1
3496     pattern=$2
3497     file=$source_path/$3
3498     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3499 }
3500
3501 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3502 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3503 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3504 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3505 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3506 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3507 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3508 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3509 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3510
3511 find_things_extern(){
3512     thing=$1
3513     pattern=$2
3514     file=$source_path/$3
3515     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3516 }
3517
3518 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3519 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3520
3521 AVCODEC_COMPONENTS_LIST="
3522     $BSF_LIST
3523     $DECODER_LIST
3524     $ENCODER_LIST
3525     $HWACCEL_LIST
3526     $PARSER_LIST
3527 "
3528
3529 AVDEVICE_COMPONENTS_LIST="
3530     $INDEV_LIST
3531     $OUTDEV_LIST
3532 "
3533
3534 AVFILTER_COMPONENTS_LIST="
3535     $FILTER_LIST
3536 "
3537
3538 AVFORMAT_COMPONENTS_LIST="
3539     $DEMUXER_LIST
3540     $MUXER_LIST
3541     $PROTOCOL_LIST
3542 "
3543
3544 ALL_COMPONENTS="
3545     $AVCODEC_COMPONENTS_LIST
3546     $AVDEVICE_COMPONENTS_LIST
3547     $AVFILTER_COMPONENTS_LIST
3548     $AVFORMAT_COMPONENTS_LIST
3549 "
3550
3551 for n in $COMPONENT_LIST; do
3552     v=$(toupper ${n%s})_LIST
3553     eval enable \$$v
3554     eval ${n}_if_any="\$$v"
3555 done
3556
3557 enable $ARCH_EXT_LIST
3558
3559 die_unknown(){
3560     echo "Unknown option \"$1\"."
3561     echo "See $0 --help for available options."
3562     exit 1
3563 }
3564
3565 print_in_columns() {
3566     cols=$(expr $ncols / 24)
3567     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3568 }
3569
3570 show_list() {
3571     suffix=_$1
3572     shift
3573     echo $* | sed s/$suffix//g | print_in_columns
3574     exit 0
3575 }
3576
3577 rand_list(){
3578     IFS=', '
3579     set -- $*
3580     unset IFS
3581     for thing; do
3582         comp=${thing%:*}
3583         prob=${thing#$comp}
3584         prob=${prob#:}
3585         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3586         echo "prob ${prob:-0.5}"
3587         printf '%s\n' $comp
3588     done
3589 }
3590
3591 do_random(){
3592     action=$1
3593     shift
3594     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3595     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3596 }
3597
3598 for opt do
3599     optval="${opt#*=}"
3600     case "$opt" in
3601         --extra-ldflags=*)
3602             add_ldflags $optval
3603         ;;
3604         --extra-ldexeflags=*)
3605             add_ldexeflags $optval
3606         ;;
3607         --extra-ldlibflags=*)
3608             add_ldlibflags $optval
3609         ;;
3610         --extra-libs=*)
3611             add_extralibs $optval
3612         ;;
3613         --disable-devices)
3614             disable $INDEV_LIST $OUTDEV_LIST
3615         ;;
3616         --enable-debug=*)
3617             debuglevel="$optval"
3618         ;;
3619         --disable-programs)
3620             disable $PROGRAM_LIST
3621         ;;
3622         --disable-everything)
3623             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3624         ;;
3625         --disable-all)
3626             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3627             disable $LIBRARY_LIST $PROGRAM_LIST doc
3628             enable avutil
3629         ;;
3630         --enable-random|--disable-random)
3631             action=${opt%%-random}
3632             do_random ${action#--} $COMPONENT_LIST
3633         ;;
3634         --enable-random=*|--disable-random=*)
3635             action=${opt%%-random=*}
3636             do_random ${action#--} $optval
3637         ;;
3638         --enable-sdl)
3639             enable sdl2
3640         ;;
3641         --enable-*=*|--disable-*=*)
3642             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3643             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3644             eval list=\$$(toupper $thing)_LIST
3645             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3646             list=$(filter "$name" $list)
3647             [ "$list" = "" ] && warn "Option $opt did not match anything"
3648             $action $list
3649         ;;
3650         --enable-yasm|--disable-yasm)
3651             warn "The ${opt} option is only provided for compatibility and will be\n"\
3652                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3653             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3654         ;;
3655         --yasmexe=*)
3656             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3657                  "removed in the future. Use --x86asmexe instead."
3658             x86asmexe="$optval"
3659         ;;
3660         --enable-?*|--disable-?*)
3661             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3662             if is_in $option $COMPONENT_LIST; then
3663                 test $action = disable && action=unset
3664                 eval $action \$$(toupper ${option%s})_LIST
3665             elif is_in $option $CMDLINE_SELECT; then
3666                 $action $option
3667             else
3668                 die_unknown $opt
3669             fi
3670         ;;
3671         --list-*)
3672             NAME="${opt#--list-}"
3673             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3674             NAME=${NAME%s}
3675             eval show_list $NAME \$$(toupper $NAME)_LIST
3676         ;;
3677         --help|-h) show_help
3678         ;;
3679         --quiet|-q) quiet=yes
3680         ;;
3681         --fatal-warnings) enable fatal_warnings
3682         ;;
3683         --libfuzzer=*)
3684             libfuzzer_path="$optval"
3685         ;;
3686         *)
3687             optname="${opt%%=*}"
3688             optname="${optname#--}"
3689             optname=$(echo "$optname" | sed 's/-/_/g')
3690             if is_in $optname $CMDLINE_SET; then
3691                 eval $optname='$optval'
3692             elif is_in $optname $CMDLINE_APPEND; then
3693                 append $optname "$optval"
3694             else
3695                 die_unknown $opt
3696             fi
3697         ;;
3698     esac
3699 done
3700
3701 for e in $env; do
3702     eval "export $e"
3703 done
3704
3705 if disabled autodetect; then
3706
3707     # Unless iconv is explicitely disabled by the user, we still want to probe
3708     # for the iconv from the libc.
3709     disabled iconv || enable libc_iconv
3710
3711     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3712     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3713 fi
3714 # Mark specifically enabled, but normally autodetected libraries as requested.
3715 for lib in $AUTODETECT_LIBS; do
3716     enabled $lib && request $lib
3717 done
3718 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3719 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3720 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3721
3722 disabled logging && logfile=/dev/null
3723
3724 die_license_disabled() {
3725     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3726 }
3727
3728 die_license_disabled_gpl() {
3729     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3730 }
3731
3732 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3733 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3734
3735 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3736 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3737
3738 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3739
3740 enabled_all gnutls openssl &&
3741     die "GnuTLS and OpenSSL must not be enabled at the same time."
3742
3743 # Disable all the library-specific components if the library itself
3744 # is disabled, see AVCODEC_LIST and following _LIST variables.
3745
3746 disable_components(){
3747     disabled ${1} && disable $(
3748         eval components="\$$(toupper ${1})_COMPONENTS"
3749         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3750     )
3751 }
3752
3753 map 'disable_components $v' $LIBRARY_LIST
3754
3755 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3756 set >> $logfile
3757
3758 test -n "$valgrind" && toolchain="valgrind-memcheck"
3759
3760 enabled ossfuzz && {
3761     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3762     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3763 }
3764
3765 case "$toolchain" in
3766     *-asan)
3767         cc_default="${toolchain%-asan}"
3768         add_cflags  -fsanitize=address
3769         add_ldflags -fsanitize=address
3770     ;;
3771     *-msan)
3772         cc_default="${toolchain%-msan}"
3773         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3774         add_ldflags -fsanitize=memory
3775     ;;
3776     *-tsan)
3777         cc_default="${toolchain%-tsan}"
3778         add_cflags  -fsanitize=thread -fPIE
3779         add_ldflags -fsanitize=thread -pie
3780         case "$toolchain" in
3781             gcc-tsan)
3782                 add_cflags  -fPIC
3783                 add_ldflags -fPIC
3784                 ;;
3785         esac
3786     ;;
3787     *-usan)
3788         cc_default="${toolchain%-usan}"
3789         add_cflags  -fsanitize=undefined
3790         add_ldflags -fsanitize=undefined
3791     ;;
3792     valgrind-*)
3793         target_exec_default="valgrind"
3794         case "$toolchain" in
3795             valgrind-massif)
3796                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3797                 ;;
3798             valgrind-memcheck)
3799                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3800                 ;;
3801         esac
3802     ;;
3803     msvc)
3804         # Check whether the current MSVC version needs the C99 converter.
3805         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3806         # support enough of C99 to build ffmpeg. Default to the new
3807         # behaviour if the regexp was unable to match anything, since this
3808         # successfully parses the version number of existing supported
3809         # versions that require the converter (MSVC 2010 and 2012).
3810         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3811         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3812             cc_default="cl"
3813             cxx_default="cl"
3814         else
3815             cc_default="c99wrap cl"
3816             cxx_default="c99wrap cl"
3817         fi
3818         ld_default="$source_path/compat/windows/mslink"
3819         nm_default="dumpbin -symbols"
3820         ar_default="lib"
3821         case "$arch" in
3822         arm*)
3823             as_default="armasm"
3824             ;;
3825         esac
3826         target_os_default="win32"
3827         # Use a relative path for TMPDIR. This makes sure all the
3828         # ffconf temp files are written with a relative path, avoiding
3829         # issues with msys/win32 path conversion for MSVC parameters
3830         # such as -Fo<file> or -out:<file>.
3831         TMPDIR=.
3832     ;;
3833     icl)
3834         cc_default="icl"
3835         ld_default="xilink"
3836         nm_default="dumpbin -symbols"
3837         ar_default="xilib"
3838         target_os_default="win32"
3839         TMPDIR=.
3840     ;;
3841     gcov)
3842         add_cflags  -fprofile-arcs -ftest-coverage
3843         add_ldflags -fprofile-arcs -ftest-coverage
3844     ;;
3845     llvm-cov)
3846         add_cflags -fprofile-arcs -ftest-coverage
3847         add_ldflags --coverage
3848     ;;
3849     hardened)
3850         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3851         add_cflags   -fno-strict-overflow -fstack-protector-all
3852         add_ldflags  -Wl,-z,relro -Wl,-z,now
3853         add_cflags   -fPIE
3854         add_ldexeflags -fPIE -pie
3855     ;;
3856     ?*)
3857         die "Unknown toolchain $toolchain"
3858     ;;
3859 esac
3860
3861 test -n "$cross_prefix" && enable cross_compile
3862
3863 if enabled cross_compile; then
3864     test -n "$arch" && test -n "$target_os" ||
3865         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3866 fi
3867
3868 ar_default="${cross_prefix}${ar_default}"
3869 cc_default="${cross_prefix}${cc_default}"
3870 cxx_default="${cross_prefix}${cxx_default}"
3871 nm_default="${cross_prefix}${nm_default}"
3872 pkg_config_default="${cross_prefix}${pkg_config_default}"
3873 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3874     ranlib_default="${cross_prefix}${ranlib_default} -D"
3875 else
3876     ranlib_default="${cross_prefix}${ranlib_default}"
3877 fi
3878 strip_default="${cross_prefix}${strip_default}"
3879 windres_default="${cross_prefix}${windres_default}"
3880
3881 sysinclude_default="${sysroot}/usr/include"
3882
3883 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3884     target_exec target_os x86asmexe nvcc
3885 enabled cross_compile || host_cc_default=$cc
3886 set_default host_cc
3887
3888 pkg_config_fail_message=""
3889 if ! $pkg_config --version >/dev/null 2>&1; then
3890     warn "$pkg_config not found, library detection may fail."
3891     pkg_config=false
3892 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3893     pkg_config_fail_message="
3894 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3895 fi
3896
3897 if test $doxygen != $doxygen_default && \
3898   ! $doxygen --version >/dev/null 2>&1; then
3899     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3900 fi
3901
3902 exesuf() {
3903     case $1 in
3904         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3905     esac
3906 }
3907
3908 EXESUF=$(exesuf $target_os)
3909 HOSTEXESUF=$(exesuf $host_os)
3910
3911 # set temporary file name
3912 : ${TMPDIR:=$TEMPDIR}
3913 : ${TMPDIR:=$TMP}
3914 : ${TMPDIR:=/tmp}
3915
3916 if [ -n "$tempprefix" ] ; then
3917     mktemp(){
3918         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3919         echo "$tmpname"
3920         mkdir "$tmpname"
3921     }
3922 elif ! check_cmd mktemp -u XXXXXX; then
3923     # simple replacement for missing mktemp
3924     # NOT SAFE FOR GENERAL USE
3925     mktemp(){
3926         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3927         echo "$tmpname"
3928         mkdir "$tmpname"
3929     }
3930 fi
3931
3932 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3933     die "Unable to create temporary directory in $TMPDIR."
3934
3935 tmpfile(){
3936     tmp="${FFTMPDIR}/test"$2
3937     (set -C; exec > $tmp) 2> /dev/null ||
3938         die "Unable to create temporary file in $FFTMPDIR."
3939     eval $1=$tmp
3940 }
3941
3942 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3943 trap 'exit 2' INT
3944
3945 tmpfile TMPASM .asm
3946 tmpfile TMPC   .c
3947 tmpfile TMPCPP .cpp
3948 tmpfile TMPE   $EXESUF
3949 tmpfile TMPH   .h
3950 tmpfile TMPM   .m
3951 tmpfile TMPO   .o
3952 tmpfile TMPS   .S
3953 tmpfile TMPSH  .sh
3954 tmpfile TMPV   .ver
3955
3956 unset -f mktemp
3957
3958 chmod +x $TMPE
3959
3960 # make sure we can execute files in $TMPDIR
3961 cat > $TMPSH 2>> $logfile <<EOF
3962 #! /bin/sh
3963 EOF
3964 chmod +x $TMPSH >> $logfile 2>&1
3965 if ! $TMPSH >> $logfile 2>&1; then
3966     cat <<EOF
3967 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3968 variable to another directory and make sure that it is not mounted noexec.
3969 EOF
3970     die "Sanity test failed."
3971 fi
3972
3973 armasm_flags(){
3974     for flag; do
3975         case $flag in
3976             # Filter out MSVC cl.exe options from cflags that shouldn't
3977             # be passed to gas-preprocessor
3978             -M[TD]*)                                            ;;
3979             *)                  echo $flag                      ;;
3980         esac
3981    done
3982 }
3983
3984 ccc_flags(){
3985     for flag; do
3986         case $flag in
3987             -std=c99)           echo -c99                       ;;
3988             -mcpu=*)            echo -arch ${flag#*=}           ;;
3989             -mieee)             echo -ieee                      ;;
3990             -O*|-fast)          echo $flag                      ;;
3991             -fno-math-errno)    echo -assume nomath_errno       ;;
3992             -g)                 echo -g3                        ;;
3993             -Wall)              echo -msg_enable level2         ;;
3994             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3995             -Wl,*)              echo $flag                      ;;
3996             -f*|-W*)                                            ;;
3997             *)                  echo $flag                      ;;
3998         esac
3999    done
4000 }
4001
4002 cparser_flags(){
4003     for flag; do
4004         case $flag in
4005             -Wno-switch)             echo -Wno-switch-enum ;;
4006             -Wno-format-zero-length) ;;
4007             -Wdisabled-optimization) ;;
4008             -Wno-pointer-sign)       echo -Wno-other ;;
4009             *)                       echo $flag ;;
4010         esac
4011     done
4012 }
4013
4014 msvc_common_flags(){
4015     for flag; do
4016         case $flag in
4017             # In addition to specifying certain flags under the compiler
4018             # specific filters, they must be specified here as well or else the
4019             # generic catch all at the bottom will print the original flag.
4020             -Wall)                ;;
4021             -Wextra)              ;;
4022             -std=c99)             ;;
4023             # Common flags
4024             -fomit-frame-pointer) ;;
4025             -g)                   echo -Z7 ;;
4026             -fno-math-errno)      ;;
4027             -fno-common)          ;;
4028             -fno-signed-zeros)    ;;
4029             -fPIC)                ;;
4030             -mthumb)              ;;
4031             -march=*)             ;;
4032             -lz)                  echo zlib.lib ;;
4033             -lx264)               echo libx264.lib ;;
4034             -lstdc++)             ;;
4035             -l*)                  echo ${flag#-l}.lib ;;
4036             -LARGEADDRESSAWARE)   echo $flag ;;
4037             -L*)                  echo -libpath:${flag#-L} ;;
4038             *)                    echo $flag ;;
4039         esac
4040     done
4041 }
4042
4043 msvc_flags(){
4044     msvc_common_flags "$@"
4045     for flag; do
4046         case $flag in
4047             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4048                                        -wd4554 ;;
4049             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4050                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4051                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4052                                        -wd4307 \
4053                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4054         esac
4055     done
4056 }
4057
4058 icl_flags(){
4059     msvc_common_flags "$@"
4060     for flag; do
4061         case $flag in
4062             # Despite what Intel's documentation says -Wall, which is supported
4063             # on Windows, does enable remarks so disable them here.
4064             -Wall)                echo $flag -Qdiag-disable:remark ;;
4065             -std=c99)             echo -Qstd=c99 ;;
4066             -flto)                echo -ipo ;;
4067         esac
4068     done
4069 }
4070
4071 icc_flags(){
4072     for flag; do
4073         case $flag in
4074             -flto)                echo -ipo ;;
4075             *)                    echo $flag ;;
4076         esac
4077     done
4078 }
4079
4080 pgi_flags(){
4081     for flag; do
4082         case $flag in
4083             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4084             -fomit-frame-pointer) echo -Mnoframe ;;
4085             -g)                   echo -gopt ;;
4086             *)                    echo $flag ;;
4087         esac
4088     done
4089 }
4090
4091 suncc_flags(){
4092     for flag; do
4093         case $flag in
4094             -march=*|-mcpu=*)
4095                 case "${flag#*=}" in
4096                     native)                   echo -xtarget=native       ;;
4097                     v9|niagara)               echo -xarch=sparc          ;;
4098                     ultrasparc)               echo -xarch=sparcvis       ;;
4099                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4100                     i586|pentium)             echo -xchip=pentium        ;;
4101                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4102                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4103                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4104                     pentium4*)          echo -xtarget=pentium4           ;;
4105                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4106                     *-sse3)             echo -xarch=sse3                 ;;
4107                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4108                     bonnell)                   echo -xarch=ssse3         ;;
4109                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4110                     westmere)                  echo -xtarget=westmere    ;;
4111                     silvermont)                echo -xarch=sse4_2        ;;
4112                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4113                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4114                                                echo -xarch=avx           ;;
4115                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4116                     btver1)                    echo -xarch=amdsse4a      ;;
4117                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4118                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4119                     k8|opteron|athlon64|athlon-fx)
4120                                                echo -xarch=sse2a         ;;
4121                     athlon*)                   echo -xarch=pentium_proa  ;;
4122                 esac
4123                 ;;
4124             -std=c99)             echo -xc99              ;;
4125             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4126             -fPIC)                echo -KPIC -xcode=pic32 ;;
4127             -W*,*)                echo $flag              ;;
4128             -f*-*|-W*|-mimpure-text)                      ;;
4129             -shared)              echo -G                 ;;
4130             *)                    echo $flag              ;;
4131         esac
4132     done
4133 }
4134
4135 tms470_flags(){
4136     for flag; do
4137         case $flag in
4138             -march=*|-mcpu=*)
4139                 case "${flag#*=}" in
4140                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4141                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4142                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4143                     armv6*|arm11*)          echo -mv=6   ;;
4144                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4145                                             echo -mv=5e  ;;
4146                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4147                 esac
4148                 ;;
4149             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4150             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4151             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4152             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4153             -msoft-float)   echo --float_support=vfplib       ;;
4154             -O[0-3]|-mf=*)  echo $flag                        ;;
4155             -g)             echo -g -mn                       ;;
4156             -pds=*)         echo $flag                        ;;
4157             -D*|-I*)        echo $flag                        ;;
4158             --gcc|--abi=*)  echo $flag                        ;;
4159             -me)            echo $flag                        ;;
4160         esac
4161     done
4162 }
4163
4164 probe_cc(){
4165     pfx=$1
4166     _cc=$2
4167     first=$3
4168
4169     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4170     unset _ld_o _ldflags _ld_lib _ld_path
4171     unset _depflags _DEPCMD _DEPFLAGS
4172     _flags_filter=echo
4173
4174     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4175         true # no-op to avoid reading stdin in following checks
4176     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4177         _type=llvm_gcc
4178         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4179         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4180         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4181         _cflags_speed='-O3'
4182         _cflags_size='-Os'
4183     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4184         _type=gcc
4185         gcc_version=$($_cc --version | head -n1)
4186         gcc_basever=$($_cc -dumpversion)
4187         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4188         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4189         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4190         case $gcc_basever in
4191             2) ;;
4192             2.*) ;;
4193             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4194         esac
4195         if [ "$first" = true ]; then
4196             case $gcc_basever in
4197                 4.2*)
4198                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4199             esac
4200         fi
4201         _cflags_speed='-O3'
4202         _cflags_size='-Os'
4203     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4204         _type=icc
4205         _ident=$($_cc --version | head -n1)
4206         _depflags='-MMD'
4207         _cflags_speed='-O3'
4208         _cflags_size='-Os'
4209         _cflags_noopt='-O1'
4210         _flags_filter=icc_flags
4211     elif $_cc -v 2>&1 | grep -q xlc; then
4212         _type=xlc
4213         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4214         _cflags_speed='-O5'
4215         _cflags_size='-O5 -qcompact'
4216     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4217         _type=ccc
4218         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4219         _DEPFLAGS='-M'
4220         _cflags_speed='-fast'
4221         _cflags_size='-O1'
4222         _flags_filter=ccc_flags
4223     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4224         test -d "$sysroot" || die "No valid sysroot specified."
4225         _type=armcc
4226         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4227         armcc_conf="$PWD/armcc.conf"
4228         $_cc --arm_linux_configure                 \
4229              --arm_linux_config_file="$armcc_conf" \
4230              --configure_sysroot="$sysroot"        \
4231              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4232              die "Error creating armcc configuration file."
4233         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4234         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4235         as_default="${cross_prefix}gcc"
4236         _depflags='-MMD'
4237         _cflags_speed='-O3'
4238         _cflags_size='-Os'
4239     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4240         _type=tms470
4241         _ident=$($_cc -version | head -n1 | tr -s ' ')
4242         _flags='--gcc --abi=eabi -me'
4243         _cc_e='-ppl -fe=$@'
4244         _cc_o='-fe=$@'
4245         _depflags='-ppa -ppd=$(@:.o=.d)'
4246         _cflags_speed='-O3 -mf=5'
4247         _cflags_size='-O3 -mf=2'
4248         _flags_filter=tms470_flags
4249     elif $_cc -v 2>&1 | grep -q clang; then
4250         _type=clang
4251         _ident=$($_cc --version 2>/dev/null | head -n1)
4252         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4253         _cflags_speed='-O3'
4254         _cflags_size='-Oz'
4255     elif $_cc -V 2>&1 | grep -q Sun; then
4256         _type=suncc
4257         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4258         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4259         _DEPFLAGS='-xM1 -xc99'
4260         _ldflags='-std=c99'
4261         _cflags_speed='-O5'
4262         _cflags_size='-O5 -xspace'
4263         _flags_filter=suncc_flags
4264     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4265         _type=pathscale
4266         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4267         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4268         _cflags_speed='-O2'
4269         _cflags_size='-Os'
4270         _flags_filter='filter_out -Wdisabled-optimization'
4271     elif $_cc -v 2>&1 | grep -q Open64; then
4272         _type=open64
4273         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4274         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4275         _cflags_speed='-O2'
4276         _cflags_size='-Os'
4277         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4278     elif $_cc -V 2>&1 | grep -q Portland; then
4279         _type=pgi
4280         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4281         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4282         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4283         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4284         _cflags_noopt="-O"
4285         _flags_filter=pgi_flags
4286     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4287         _type=armasm
4288         _ident=$($_cc | head -n1)
4289         # 4509: "This form of conditional instruction is deprecated"
4290         _flags="-nologo -ignore 4509"
4291         _flags_filter=armasm_flags
4292     elif $_cc 2>&1 | grep -q Intel; then
4293         _type=icl
4294         _ident=$($_cc 2>&1 | head -n1)
4295         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4296         # Not only is O3 broken on 13.x+ but it is slower on all previous
4297         # versions (tested) as well.
4298         _cflags_speed="-O2"
4299         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4300         if $_cc 2>&1 | grep -q Linker; then
4301             _ld_o='-out:$@'
4302         else
4303             _ld_o='-Fe$@'
4304         fi
4305         _cc_o='-Fo$@'
4306         _cc_e='-P'
4307         _flags_filter=icl_flags
4308         _ld_lib='lib%.a'
4309         _ld_path='-libpath:'
4310         # -Qdiag-error to make icl error when seeing certain unknown arguments
4311         _flags='-nologo -Qdiag-error:4044,10157'
4312         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4313         # with MSVC which enables it by default.
4314         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4315         disable stripping
4316     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4317         # lld can emulate multiple different linkers; in ms link.exe mode,
4318         # the -? parameter gives the help output which contains an identifyable
4319         # string, while it gives an error in other modes.
4320         _type=lld-link
4321         # The link.exe mode doesn't have a switch for getting the version,
4322         # but we can force it back to gnu mode and get the version from there.
4323         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4324         _ld_o='-out:$@'
4325         _flags_filter=msvc_flags
4326         _ld_lib='lib%.a'
4327         _ld_path='-libpath:'
4328     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4329         _type=msvc
4330         _ident=$($_cc 2>&1 | head -n1)
4331         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4332         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4333         _cflags_speed="-O2"
4334         _cflags_size="-O1"
4335         _cflags_noopt="-O1"
4336         if $_cc -nologo- 2>&1 | grep -q Linker; then
4337             _ld_o='-out:$@'
4338         else
4339             _ld_o='-Fe$@'
4340         fi
4341         _cc_o='-Fo$@'
4342         _cc_e='-P -Fi$@'
4343         _flags_filter=msvc_flags
4344         _ld_lib='lib%.a'
4345         _ld_path='-libpath:'
4346         _flags='-nologo'
4347         disable stripping
4348     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4349         _type=cparser
4350         _ident=$($_cc --version | head -n1)
4351         _depflags='-MMD'
4352         _cflags_speed='-O4'
4353         _cflags_size='-O2'
4354         _flags_filter=cparser_flags
4355     fi
4356
4357     eval ${pfx}_type=\$_type
4358     eval ${pfx}_ident=\$_ident
4359 }
4360
4361 set_ccvars(){
4362     eval ${1}_C=\${_cc_c-\${${1}_C}}
4363     eval ${1}_E=\${_cc_e-\${${1}_E}}
4364     eval ${1}_O=\${_cc_o-\${${1}_O}}
4365
4366     if [ -n "$_depflags" ]; then
4367         eval ${1}_DEPFLAGS=\$_depflags
4368     else
4369         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4370         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4371         eval DEP${1}FLAGS=\$_flags
4372     fi
4373 }
4374
4375 probe_cc cc "$cc" "true"
4376 cflags_filter=$_flags_filter
4377 cflags_speed=$_cflags_speed
4378 cflags_size=$_cflags_size
4379 cflags_noopt=$_cflags_noopt
4380 add_cflags $_flags $_cflags
4381 cc_ldflags=$_ldflags
4382 set_ccvars CC
4383 set_ccvars CXX
4384
4385 probe_cc hostcc "$host_cc"
4386 host_cflags_filter=$_flags_filter
4387 host_cflags_speed=$_cflags_speed
4388 add_host_cflags  $_flags $_cflags
4389 set_ccvars HOSTCC
4390
4391 test -n "$cc_type" && enable $cc_type ||
4392     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4393
4394 : ${as_default:=$cc}
4395 : ${objcc_default:=$cc}
4396 : ${dep_cc_default:=$cc}
4397 : ${ld_default:=$cc}
4398 : ${host_ld_default:=$host_cc}
4399 set_default ar as objcc dep_cc ld ln_s host_ld windres
4400
4401 probe_cc as "$as"
4402 asflags_filter=$_flags_filter
4403 add_asflags $_flags $_cflags
4404 set_ccvars AS
4405
4406 probe_cc objcc "$objcc"
4407 objcflags_filter=$_flags_filter
4408 add_objcflags $_flags $_cflags
4409 set_ccvars OBJC
4410
4411 probe_cc ld "$ld"
4412 ldflags_filter=$_flags_filter
4413 add_ldflags $_flags $_ldflags
4414 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4415 LD_O=${_ld_o-$LD_O}
4416 LD_LIB=${_ld_lib-$LD_LIB}
4417 LD_PATH=${_ld_path-$LD_PATH}
4418
4419 probe_cc hostld "$host_ld"
4420 host_ldflags_filter=$_flags_filter
4421 add_host_ldflags $_flags $_ldflags
4422 HOSTLD_O=${_ld_o-$HOSTLD_O}
4423
4424 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4425     probe_cc depcc "$dep_cc"
4426     CCDEP=${_DEPCMD:-$DEPCMD}
4427     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4428     DEPCCFLAGS=$_flags
4429 fi
4430
4431 if $ar 2>&1 | grep -q Microsoft; then
4432     arflags="-nologo"
4433     ar_o='-out:$@'
4434 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4435     arflags="rq"
4436     ar_o='$@'
4437 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4438     arflags='-Xany -r -c'
4439     ar_o='$@'
4440 elif $ar 2>&1 | grep -q "\[D\] "; then
4441     arflags="rcD"
4442     ar_o='$@'
4443 else
4444     arflags="rc"
4445     ar_o='$@'
4446 fi
4447
4448 add_cflags $extra_cflags
4449 add_cxxflags $extra_cxxflags
4450 add_objcflags $extra_objcflags
4451 add_asflags $extra_cflags
4452
4453 if test -n "$sysroot"; then
4454     case "$cc_type" in
4455         gcc|llvm_gcc|clang)
4456             add_cppflags --sysroot="$sysroot"
4457             add_ldflags --sysroot="$sysroot"
4458 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4459             add_cppflags -isysroot "$sysroot"
4460             add_ldflags -isysroot "$sysroot"
4461         ;;
4462         tms470)
4463             add_cppflags -I"$sysinclude"
4464             add_ldflags  --sysroot="$sysroot"
4465         ;;
4466     esac
4467 fi
4468
4469 if test "$cpu" = host; then
4470     enabled cross_compile &&
4471         die "--cpu=host makes no sense when cross-compiling."
4472
4473     case "$cc_type" in
4474         gcc|llvm_gcc)
4475             check_native(){
4476                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4477                 sed -n "/cc1.*$1=/{
4478                             s/.*$1=\\([^ ]*\\).*/\\1/
4479                             p
4480                             q
4481                         }" $TMPE
4482             }
4483             cpu=$(check_native -march || check_native -mcpu)
4484         ;;
4485         clang)
4486             check_native(){
4487                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4488                 sed -n "/cc1.*-target-cpu /{
4489                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4490                             p
4491                             q
4492                         }" $TMPE
4493             }
4494             cpu=$(check_native -march)
4495         ;;
4496     esac
4497
4498     test "${cpu:-host}" = host &&
4499         die "--cpu=host not supported with compiler $cc"
4500 fi
4501
4502 # Deal with common $arch aliases
4503 case "$arch" in
4504     aarch64|arm64)
4505         arch="aarch64"
4506     ;;
4507     arm*|iPad*|iPhone*)
4508         arch="arm"
4509     ;;
4510     mips*|IP*)
4511         case "$arch" in
4512         *el)
4513             add_cppflags -EL
4514             add_ldflags -EL
4515         ;;
4516         *eb)
4517             add_cppflags -EB
4518             add_ldflags -EB
4519         ;;
4520         esac
4521         arch="mips"
4522     ;;
4523     parisc*|hppa*)
4524         arch="parisc"
4525     ;;
4526     "Power Macintosh"|ppc*|powerpc*)
4527         arch="ppc"
4528     ;;
4529     s390|s390x)
4530         arch="s390"
4531     ;;
4532     sh4|sh)
4533         arch="sh4"
4534     ;;
4535     sun4*|sparc*)
4536         arch="sparc"
4537     ;;
4538     tilegx|tile-gx)
4539         arch="tilegx"
4540     ;;
4541     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4542         arch="x86"
4543     ;;
4544 esac
4545
4546 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4547 enable $arch
4548
4549 # Add processor-specific flags
4550 if enabled aarch64; then
4551
4552     case $cpu in
4553         armv*)
4554             cpuflags="-march=$cpu"
4555         ;;
4556         *)
4557             cpuflags="-mcpu=$cpu"
4558         ;;
4559     esac
4560
4561 elif enabled alpha; then
4562
4563     cpuflags="-mcpu=$cpu"
4564
4565 elif enabled arm; then
4566
4567     check_arm_arch() {
4568         check_cpp_condition stddef.h \
4569             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4570             $cpuflags
4571     }
4572
4573     probe_arm_arch() {
4574         if   check_arm_arch 4;        then echo armv4
4575         elif check_arm_arch 4T;       then echo armv4t
4576         elif check_arm_arch 5;        then echo armv5
4577         elif check_arm_arch 5E;       then echo armv5e
4578         elif check_arm_arch 5T;       then echo armv5t
4579         elif check_arm_arch 5TE;      then echo armv5te
4580         elif check_arm_arch 5TEJ;     then echo armv5te
4581         elif check_arm_arch 6;        then echo armv6
4582         elif check_arm_arch 6J;       then echo armv6j
4583         elif check_arm_arch 6K;       then echo armv6k
4584         elif check_arm_arch 6Z;       then echo armv6z
4585         elif check_arm_arch 6ZK;      then echo armv6zk
4586         elif check_arm_arch 6T2;      then echo armv6t2
4587         elif check_arm_arch 7;        then echo armv7
4588         elif check_arm_arch 7A  7_A;  then echo armv7-a
4589         elif check_arm_arch 7S;       then echo armv7-a
4590         elif check_arm_arch 7R  7_R;  then echo armv7-r
4591         elif check_arm_arch 7M  7_M;  then echo armv7-m
4592         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4593         elif check_arm_arch 8A  8_A;  then echo armv8-a
4594         fi
4595     }
4596
4597     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4598
4599     case $cpu in
4600         armv*)
4601             cpuflags="-march=$cpu"
4602             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4603         ;;
4604         *)
4605             cpuflags="-mcpu=$cpu"
4606             case $cpu in
4607                 cortex-a*)                               subarch=armv7a  ;;
4608                 cortex-r*)                               subarch=armv7r  ;;
4609                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4610                 arm11*)                                  subarch=armv6   ;;
4611                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4612                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4613                 *)                             subarch=$(probe_arm_arch) ;;
4614             esac
4615         ;;
4616     esac
4617
4618     case "$subarch" in
4619         armv5t*)    enable fast_clz                ;;
4620         armv[6-8]*)
4621             enable fast_clz
4622             disabled fast_unaligned || enable fast_unaligned
4623             ;;
4624     esac
4625
4626 elif enabled avr32; then
4627
4628     case $cpu in
4629         ap7[02]0[0-2])
4630             subarch="avr32_ap"
4631             cpuflags="-mpart=$cpu"
4632         ;;
4633         ap)
4634             subarch="avr32_ap"
4635             cpuflags="-march=$cpu"
4636         ;;
4637         uc3[ab]*)
4638             subarch="avr32_uc"
4639             cpuflags="-mcpu=$cpu"
4640         ;;
4641         uc)
4642             subarch="avr32_uc"
4643             cpuflags="-march=$cpu"
4644         ;;
4645     esac
4646
4647 elif enabled bfin; then
4648
4649     cpuflags="-mcpu=$cpu"
4650
4651 elif enabled mips; then
4652
4653     cpuflags="-march=$cpu"
4654
4655     if [ "$cpu" != "generic" ]; then
4656         disable mips32r2
4657         disable mips32r5
4658         disable mips64r2
4659         disable mips32r6
4660         disable mips64r6
4661         disable loongson2
4662         disable loongson3
4663
4664         case $cpu in
4665             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4666                 enable mips32r2
4667                 disable msa
4668             ;;
4669             p5600|i6400|p6600)
4670                 disable mipsdsp
4671                 disable mipsdspr2
4672             ;;
4673             loongson*)
4674                 enable loongson2
4675                 enable loongson3
4676                 enable local_aligned
4677                 enable simd_align_16
4678                 enable fast_64bit
4679                 enable fast_clz
4680                 enable fast_cmov
4681                 enable fast_unaligned
4682                 disable aligned_stack
4683                 disable mipsfpu
4684                 disable mipsdsp
4685                 disable mipsdspr2
4686                 case $cpu in
4687                     loongson3*)
4688                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4689                     ;;
4690                     loongson2e)
4691                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4692                     ;;
4693                     loongson2f)
4694                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4695                     ;;
4696                 esac
4697             ;;
4698             *)
4699                 # Unknown CPU. Disable everything.
4700                 warn "unknown CPU. Disabling all MIPS optimizations."
4701                 disable mipsfpu
4702                 disable mipsdsp
4703                 disable mipsdspr2
4704                 disable msa
4705                 disable mmi
4706             ;;
4707         esac
4708
4709         case $cpu in
4710             24kc)
4711                 disable mipsfpu
4712                 disable mipsdsp
4713                 disable mipsdspr2
4714             ;;
4715             24kf*)
4716                 disable mipsdsp
4717                 disable mipsdspr2
4718             ;;
4719             24kec|34kc|1004kc)
4720                 disable mipsfpu
4721                 disable mipsdspr2
4722             ;;
4723             24kef*|34kf*|1004kf*)
4724                 disable mipsdspr2
4725             ;;
4726             74kc)
4727                 disable mipsfpu
4728             ;;
4729             p5600)
4730                 enable mips32r5
4731                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4732             ;;
4733             i6400)
4734                 enable mips64r6
4735                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4736             ;;
4737             p6600)
4738                 enable mips64r6
4739                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4740             ;;
4741         esac
4742     else
4743         # We do not disable anything. Is up to the user to disable the unwanted features.
4744         warn 'generic cpu selected'
4745     fi
4746
4747 elif enabled ppc; then
4748
4749     disable ldbrx
4750
4751     case $(tolower $cpu) in
4752         601|ppc601|powerpc601)
4753             cpuflags="-mcpu=601"
4754             disable altivec
4755         ;;
4756         603*|ppc603*|powerpc603*)
4757             cpuflags="-mcpu=603"
4758             disable altivec
4759         ;;
4760         604*|ppc604*|powerpc604*)
4761             cpuflags="-mcpu=604"
4762             disable altivec
4763         ;;
4764         g3|75*|ppc75*|powerpc75*)
4765             cpuflags="-mcpu=750"
4766             disable altivec
4767         ;;
4768         g4|745*|ppc745*|powerpc745*)
4769             cpuflags="-mcpu=7450"
4770             disable vsx
4771         ;;
4772         74*|ppc74*|powerpc74*)
4773             cpuflags="-mcpu=7400"
4774             disable vsx
4775         ;;
4776         g5|970|ppc970|powerpc970)
4777             cpuflags="-mcpu=970"
4778             disable vsx
4779         ;;
4780         power[3-6]*)
4781             cpuflags="-mcpu=$cpu"
4782             disable vsx
4783         ;;
4784         power[7-8]*)
4785             cpuflags="-mcpu=$cpu"
4786         ;;
4787         cell)
4788             cpuflags="-mcpu=cell"
4789             enable ldbrx
4790             disable vsx
4791         ;;
4792         e500mc)
4793             cpuflags="-mcpu=e500mc"
4794             disable altivec
4795         ;;
4796         e500v2)
4797             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4798             disable altivec
4799             disable dcbzl
4800         ;;
4801         e500)
4802             cpuflags="-mcpu=8540 -mhard-float"
4803             disable altivec
4804             disable dcbzl
4805         ;;
4806     esac
4807
4808 elif enabled sparc; then
4809
4810     case $cpu in
4811         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4812             cpuflags="-mcpu=$cpu"
4813         ;;
4814         ultrasparc*|niagara[234])
4815             cpuflags="-mcpu=$cpu"
4816         ;;
4817     esac
4818
4819 elif enabled x86; then
4820
4821     case $cpu in
4822         i[345]86|pentium)
4823             cpuflags="-march=$cpu"
4824             disable i686
4825             disable mmx
4826         ;;
4827         # targets that do NOT support nopl and conditional mov (cmov)
4828         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4829             cpuflags="-march=$cpu"
4830             disable i686
4831         ;;
4832         # targets that do support nopl and conditional mov (cmov)
4833         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4834         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4835         |amdfam10|barcelona|b[dt]ver*|znver*)
4836             cpuflags="-march=$cpu"
4837             enable i686
4838             enable fast_cmov
4839         ;;
4840         # targets that do support conditional mov but on which it's slow
4841         pentium4|pentium4m|prescott|nocona)
4842             cpuflags="-march=$cpu"
4843             enable i686
4844             disable fast_cmov
4845         ;;
4846     esac
4847
4848 fi
4849
4850 if [ "$cpu" != generic ]; then
4851     add_cflags  $cpuflags
4852     add_asflags $cpuflags
4853     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4854 fi
4855
4856 # compiler sanity check
4857 check_exec <<EOF
4858 int main(void){ return 0; }
4859 EOF
4860 if test "$?" != 0; then
4861     echo "$cc is unable to create an executable file."
4862     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4863         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4864         echo "Only do this if you know what cross compiling means."
4865     fi
4866     die "C compiler test failed."
4867 fi
4868
4869 add_cppflags -D_ISOC99_SOURCE
4870 add_cxxflags -D__STDC_CONSTANT_MACROS
4871 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4872
4873 # some compilers silently accept -std=c11, so we also need to check that the
4874 # version macro is defined properly
4875 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4876     add_cflags -std=c11 ||
4877     check_cflags -std=c99
4878
4879 check_cppflags -D_FILE_OFFSET_BITS=64
4880 check_cppflags -D_LARGEFILE_SOURCE
4881
4882 add_host_cppflags -D_ISOC99_SOURCE
4883 check_host_cflags -std=c99
4884 check_host_cflags -Wall
4885 check_host_cflags $host_cflags_speed
4886
4887 check_64bit(){
4888     arch32=$1
4889     arch64=$2
4890     expr=$3
4891     check_code cc "" "int test[2*($expr) - 1]" &&
4892         subarch=$arch64 || subarch=$arch32
4893 }
4894
4895 case "$arch" in
4896     aarch64|alpha|ia64)
4897         spic=$shared
4898     ;;
4899     mips)
4900         check_64bit mips mips64 '_MIPS_SIM > 1'
4901         spic=$shared
4902     ;;
4903     parisc)
4904         check_64bit parisc parisc64 'sizeof(void *) > 4'
4905         spic=$shared
4906     ;;
4907     ppc)
4908         check_64bit ppc ppc64 'sizeof(void *) > 4'
4909         spic=$shared
4910     ;;
4911     s390)
4912         check_64bit s390 s390x 'sizeof(void *) > 4'
4913         spic=$shared
4914     ;;
4915     sparc)
4916         check_64bit sparc sparc64 'sizeof(void *) > 4'
4917         spic=$shared
4918     ;;
4919     x86)
4920         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4921         # Treat x32 as x64 for now. Note it also needs spic=$shared
4922         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4923             subarch=x86_64
4924         if test "$subarch" = "x86_64"; then
4925             spic=$shared
4926         fi
4927     ;;
4928     ppc)
4929         check_cc <<EOF && subarch="ppc64"
4930         int test[(int)sizeof(char*) - 7];
4931 EOF
4932     ;;
4933 esac
4934
4935 enable $subarch
4936 enabled spic && enable_weak pic
4937
4938 enabled x86_64 && objformat=elf64 || objformat="elf32"
4939
4940 # OS specific
4941 case $target_os in
4942     aix)
4943         SHFLAGS=-shared
4944         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4945         enabled shared && add_ldflags -Wl,-brtl
4946         ;;
4947     android)
4948         disable symver
4949         enable section_data_rel_ro
4950         SLIB_INSTALL_NAME='$(SLIBNAME)'
4951         SLIB_INSTALL_LINKS=
4952         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4953         ;;
4954     haiku)
4955         prefix_default="/boot/common"
4956         network_extralibs="-lnetwork"
4957         host_extralibs=
4958         ;;
4959     sunos)
4960         SHFLAGS='-shared -Wl,-h,$$(@F)'
4961         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4962         network_extralibs="-lsocket -lnsl"
4963         add_cppflags -D__EXTENSIONS__
4964         # When using suncc to build, the Solaris linker will mark
4965         # an executable with each instruction set encountered by
4966         # the Solaris assembler.  As our libraries contain their own
4967         # guards for processor-specific code, instead suppress
4968         # generation of the HWCAPS ELF section on Solaris x86 only.
4969         enabled_all suncc x86 &&
4970             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4971             add_ldflags -Wl,-M,mapfile
4972         nm_default='nm -P -g'
4973         version_script='-M'
4974         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4975         ;;
4976     netbsd)
4977         disable symver
4978         oss_indev_extralibs="-lossaudio"
4979         oss_outdev_extralibs="-lossaudio"
4980         enabled gcc || check_ldflags -Wl,-zmuldefs
4981         ;;
4982     openbsd|bitrig)
4983         disable symver
4984         SHFLAGS='-shared'
4985         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4986         SLIB_INSTALL_LINKS=
4987         oss_indev_extralibs="-lossaudio"
4988         oss_outdev_extralibs="-lossaudio"
4989         ;;
4990     dragonfly)
4991         disable symver
4992         ;;
4993     freebsd)
4994         ;;
4995     bsd/os)
4996         add_extralibs -lpoll -lgnugetopt
4997         strip="strip -d"
4998         ;;
4999     darwin)
5000         enabled ppc && add_asflags -force_cpusubtype_ALL
5001         install_name_dir_default='$(SHLIBDIR)'
5002         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5003         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5004         strip="${strip} -x"
5005         add_ldflags -Wl,-dynamic,-search_paths_first
5006         check_cflags -Werror=partial-availability
5007         SLIBSUF=".dylib"
5008         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5009         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5010         enabled x86_64 && objformat="macho64" || objformat="macho32"
5011         enabled_any pic shared x86_64 ||
5012             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5013         check_header dispatch/dispatch.h &&
5014             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5015         version_script='-exported_symbols_list'
5016         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5017         ;;
5018     msys*)
5019         die "Native MSYS builds are discouraged, please use the MINGW environment."
5020         ;;
5021     mingw32*|mingw64*)
5022         if test $target_os = "mingw32ce"; then
5023             disable network
5024         else
5025             target_os=mingw32
5026         fi
5027         LIBTARGET=i386
5028         if enabled x86_64; then
5029             LIBTARGET="i386:x86-64"
5030         elif enabled arm; then
5031             LIBTARGET=arm-wince
5032         fi
5033         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5034         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5035         shlibdir_default="$bindir_default"
5036         SLIBPREF=""
5037         SLIBSUF=".dll"
5038         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5039         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5040         dlltool="${cross_prefix}dlltool"
5041         if check_cmd lib.exe -list; then
5042             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5043             if enabled x86_64; then
5044                 LIBTARGET=x64
5045             fi
5046         elif check_cmd $dlltool --version; then
5047             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5048         fi
5049         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5050         SLIB_INSTALL_LINKS=
5051         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5052         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5053         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
5054         enabled x86_64 && objformat="win64" || objformat="win32"
5055         ranlib=:
5056         enable dos_paths
5057         check_ldflags -Wl,--nxcompat,--dynamicbase
5058         # Lets work around some stupidity in binutils.
5059         # ld will strip relocations from executables even though we need them
5060         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5061         # however ld then forgets what the entry point should be (oops) so we
5062         # have to manually (re)set it.
5063         if enabled x86_32; then
5064             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5065         elif enabled x86_64; then
5066             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5067             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5068             # Set image base >4GB for extra entropy with HEASLR
5069             add_ldexeflags -Wl,--image-base,0x140000000
5070             append SHFLAGS -Wl,--image-base,0x180000000
5071         fi
5072         ;;
5073     win32|win64)
5074         disable symver
5075         if enabled shared; then
5076             # Link to the import library instead of the normal static library
5077             # for shared libs.
5078             LD_LIB='%.lib'
5079             # Cannot build both shared and static libs with MSVC or icl.
5080             disable static
5081         fi
5082         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5083         shlibdir_default="$bindir_default"
5084         SLIBPREF=""
5085         SLIBSUF=".dll"
5086         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5087         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5088         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5089         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5090         SLIB_INSTALL_LINKS=
5091         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5092         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5093         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5094         enabled x86_64 && objformat="win64" || objformat="win32"
5095         ranlib=:
5096         enable dos_paths
5097         ;;
5098     cygwin*)
5099         target_os=cygwin
5100         shlibdir_default="$bindir_default"
5101         SLIBPREF="cyg"
5102         SLIBSUF=".dll"
5103         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5104         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5105         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5106         SLIB_INSTALL_LINKS=
5107         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5108         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5109         enabled x86_64 && objformat="win64" || objformat="win32"
5110         enable dos_paths
5111         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5112         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5113         ;;
5114     *-dos|freedos|opendos)
5115         network_extralibs="-lsocket"
5116         objformat="coff"
5117         enable dos_paths
5118         add_cppflags -U__STRICT_ANSI__
5119         ;;
5120     linux)
5121         enable section_data_rel_ro
5122         enabled_any arm aarch64 && enable_weak linux_perf
5123         ;;
5124     irix*)
5125         target_os=irix
5126         ranlib="echo ignoring ranlib"
5127         ;;
5128     os/2*)
5129         strip="lxlite -CS"
5130         striptype=""
5131         objformat="aout"
5132         add_cppflags -D_GNU_SOURCE
5133         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5134         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5135         LIBSUF="_s.a"
5136         SLIBPREF=""
5137         SLIBSUF=".dll"
5138         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5139         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5140         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5141             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5142             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5143             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5144             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5145         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5146             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5147         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5148         SLIB_INSTALL_LINKS=
5149         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5150         enable dos_paths
5151         enable_weak os2threads
5152         ;;
5153     gnu/kfreebsd)
5154         add_cppflags -D_BSD_SOURCE
5155         ;;
5156     gnu)
5157         ;;
5158     qnx)
5159         add_cppflags -D_QNX_SOURCE
5160         network_extralibs="-lsocket"
5161         ;;
5162     symbian)
5163         SLIBSUF=".dll"
5164         enable dos_paths
5165         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5166         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5167         add_ldflags -Wl,--target1-abs,--no-undefined \
5168                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5169                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5170         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5171                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5172                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5173         ;;
5174     osf1)
5175         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5176         ;;
5177     minix)
5178         ;;
5179     none)
5180         ;;
5181     *)
5182         die "Unknown OS '$target_os'."
5183         ;;
5184 esac
5185
5186 # test if creating links works
5187 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5188 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5189 mkdir "$link_dest"
5190 $ln_s "$link_dest" "$link_name"
5191 touch "$link_dest/test_file"
5192 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5193     # create link to source path
5194     [ -e src ] && rm src
5195     $ln_s "$source_path" src
5196     source_link=src
5197 else
5198     # creating directory links doesn't work
5199     # fall back to using the full source path
5200     source_link="$source_path"
5201 fi
5202 # cleanup
5203 rm -r "$link_dest"
5204 rm -r "$link_name"
5205
5206 # determine libc flavour
5207
5208 probe_libc(){
5209     pfx=$1
5210     pfx_no_=${pfx%_}
5211     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5212     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5213         eval ${pfx}libc_type=uclibc
5214         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5215     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5216         eval ${pfx}libc_type=glibc
5217         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5218     # MinGW headers can be installed on Cygwin, so check for newlib first.
5219     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5220         eval ${pfx}libc_type=newlib
5221         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5222     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5223     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5224         eval ${pfx}libc_type=mingw64
5225         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5226             add_compat msvcrt/snprintf.o
5227             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5228         fi
5229         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5230         eval test \$${pfx_no_}cc_type = "gcc" &&
5231             add_${pfx}cppflags -D__printf__=__gnu_printf__
5232     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5233          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5234         eval ${pfx}libc_type=mingw32
5235         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5236             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5237             die "ERROR: MinGW32 runtime version must be >= 3.15."
5238         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5239         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5240             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5241         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5242             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5243         eval test \$${pfx_no_}cc_type = "gcc" &&
5244             add_${pfx}cppflags -D__printf__=__gnu_printf__
5245     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5246         eval ${pfx}libc_type=msvcrt
5247         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5248             if [ "$pfx" = host_ ]; then
5249                 add_host_cppflags -Dsnprintf=_snprintf
5250             else
5251                 add_compat strtod.o strtod=avpriv_strtod
5252                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5253                                              _snprintf=avpriv_snprintf  \
5254                                              vsnprintf=avpriv_vsnprintf
5255             fi
5256         fi
5257         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5258         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5259         # 0x601 by default unless something else is set by the user.
5260         # This can easily lead to us detecting functions only present
5261         # in such new versions and producing binaries requiring windows 7.0.
5262         # Therefore explicitly set the default to XP unless the user has
5263         # set something else on the command line.
5264         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5265         # family. For these cases, configure is free to use any functions
5266         # found in the SDK headers by default. (Alternatively, we could force
5267         # _WIN32_WINNT to 0x0602 in that case.)
5268         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5269             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5270 #ifdef WINAPI_FAMILY
5271 #include <winapifamily.h>
5272 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5273 #error not desktop
5274 #endif
5275 #endif
5276 EOF
5277         if [ "$pfx" = "" ]; then
5278             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5279             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5280         fi
5281     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5282         eval ${pfx}libc_type=klibc
5283     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5284         eval ${pfx}libc_type=bionic
5285     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5286         eval ${pfx}libc_type=solaris
5287         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5288     fi
5289     check_${pfx}cc <<EOF
5290 #include <time.h>
5291 void *v = localtime_r;
5292 EOF
5293 test "$?" != 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
5294 #include <time.h>
5295 void *v = localtime_r;
5296 EOF
5297
5298 }
5299
5300 probe_libc
5301 test -n "$libc_type" && enable libc_$libc_type
5302 probe_libc host_
5303 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5304
5305 # hacks for compiler/libc/os combinations
5306
5307 case $libc_type in
5308     bionic)
5309         add_compat strtod.o strtod=avpriv_strtod
5310         ;;
5311     glibc)
5312         if enabled tms470; then
5313             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5314             add_cppflags -D__USER_LABEL_PREFIX__=
5315             add_cppflags -D__builtin_memset=memset
5316             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5317             add_cflags   -pds=48    # incompatible redefinition of macro
5318         elif enabled ccc; then
5319             add_ldflags -Wl,-z,now  # calls to libots crash without this
5320         fi
5321         ;;
5322 esac
5323
5324 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5325     add_cppflags '-I\$(SRC_PATH)/compat/float'
5326
5327 esc(){
5328     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5329 }
5330
5331 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5332
5333 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5334
5335 set_default libdir
5336 : ${shlibdir_default:="$libdir"}
5337 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5338
5339 set_default $PATHS_LIST
5340 set_default nm
5341
5342 # we need to build at least one lib type
5343 if ! enabled_any static shared; then
5344     cat <<EOF
5345 At least one library type must be built.
5346 Specify --enable-static to build the static libraries or --enable-shared to
5347 build the shared libraries as well. To only build the shared libraries specify
5348 --disable-static in addition to --enable-shared.
5349 EOF
5350     exit 1
5351 fi
5352
5353 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5354
5355 enable_weak_pic() {
5356     disabled pic && return
5357     enable pic
5358     add_cppflags -DPIC
5359     case "$target_os" in
5360     mingw*|cygwin*)
5361         ;;
5362     *)
5363         add_cflags -fPIC
5364         ;;
5365     esac
5366     add_asflags  -fPIC
5367 }
5368
5369 enabled pic && enable_weak_pic
5370
5371 check_cc <<EOF || die "Symbol mangling check failed."
5372 int ff_extern;
5373 EOF
5374 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5375 extern_prefix=${sym%%ff_extern*}
5376
5377 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5378
5379 _restrict=
5380 for restrict_keyword in restrict __restrict__ __restrict; do
5381     check_cc <<EOF && _restrict=$restrict_keyword && break
5382 void foo(char * $restrict_keyword p);
5383 EOF
5384 done
5385
5386 check_cc <<EOF && enable pragma_deprecated
5387 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5388 EOF
5389
5390 check_cc <<EOF && enable attribute_packed
5391 struct { int x; } __attribute__((packed)) x;
5392 EOF
5393
5394 check_cc <<EOF && enable attribute_may_alias
5395 union { int x; } __attribute__((may_alias)) x;
5396 EOF
5397
5398 check_cc <<EOF || die "endian test failed"
5399 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5400 EOF
5401 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5402
5403 check_cc <<EOF && enable const_nan
5404 #include <math.h>
5405 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5406 EOF
5407
5408 if ! enabled ppc64 || enabled bigendian; then
5409     disable vsx
5410 fi
5411
5412 check_gas() {
5413     log "check_gas using '$as' as AS"
5414     # :vararg is used on aarch64, arm and ppc altivec
5415     check_as <<EOF || return 1
5416 .macro m n, y:vararg=0
5417 \n: .int \y
5418 .endm
5419 m x
5420 EOF
5421     # .altmacro is only used in arm asm
5422     ! enabled arm || check_as <<EOF || return 1
5423 .altmacro
5424 EOF
5425     enable gnu_as
5426     return 0
5427 }
5428
5429 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5430     nogas=:
5431     enabled_any arm aarch64 && nogas=die
5432     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5433     as_noop=-v
5434
5435     case $as_type in
5436         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5437         gcc)  gaspp_as_type=gas ;;
5438         *)    gaspp_as_type=$as_type ;;
5439     esac
5440
5441     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5442
5443     test "${as#*gas-preprocessor.pl}" != "$as" ||
5444     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5445         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5446
5447     if ! check_gas ; then
5448         as=${gas:=$as}
5449         check_gas || \
5450             $nogas "GNU assembler not found, install/update gas-preprocessor"
5451     fi
5452
5453     check_as <<EOF && enable as_func
5454 .func test
5455 .endfunc
5456 EOF
5457 fi
5458
5459 check_inline_asm inline_asm_labels '"1:\n"'
5460
5461 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5462
5463 if enabled aarch64; then
5464     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5465     # internal assembler in clang 3.3 does not support this instruction
5466     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5467     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5468
5469     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5470
5471 elif enabled alpha; then
5472
5473     check_cflags -mieee
5474
5475 elif enabled arm; then
5476
5477     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5478
5479     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5480 float func(float a, float b){ return a+b; }
5481 EOF
5482
5483     enabled thumb && check_cflags -mthumb || check_cflags -marm
5484
5485     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5486         enable vfp_args
5487     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5488         enable vfp_args
5489     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5490         case "${cross_prefix:-$cc}" in
5491             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5492             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5493 __asm__ (".eabi_attribute 28, 1");
5494 int main(void) { return 0; }
5495 EOF
5496         esac
5497         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5498     fi
5499
5500     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5501     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5502     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5503     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5504     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5505     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5506     enabled setend  && check_insn setend  'setend be'
5507
5508     [ $target_os = linux ] || [ $target_os = android ] ||
5509         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5510             $ARCH_EXT_LIST_ARM
5511
5512     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5513
5514     check_as <<EOF && enable as_arch_directive
5515 .arch armv7-a
5516 EOF
5517     check_as <<EOF && enable as_fpu_directive
5518 .fpu neon
5519 EOF
5520
5521     # llvm's integrated assembler supports .object_arch from llvm 3.5
5522     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5523         check_as <<EOF && enable as_object_arch
5524 .object_arch armv4
5525 EOF
5526
5527     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5528
5529 elif enabled mips; then
5530
5531     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5532     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5533     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5534
5535     # Enable minimum ISA based on selected options
5536     if enabled mips64; then
5537         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5538         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5539         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5540     else
5541         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5542         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5543         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5544         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5545     fi
5546
5547     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5548     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5549     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5550     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5551     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5552
5553     if enabled bigendian && enabled msa; then
5554         disable msa
5555     fi
5556
5557 elif enabled parisc; then
5558
5559     if enabled gcc; then
5560         case $($cc -dumpversion) in
5561             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5562         esac
5563     fi
5564
5565 elif enabled ppc; then
5566
5567     enable local_aligned
5568
5569     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5570     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5571     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5572     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5573
5574     if enabled altivec; then
5575         check_cflags -maltivec -mabi=altivec
5576
5577         # check if our compiler supports Motorola AltiVec C API
5578         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5579                                  vector signed int v2 = (vector signed int) { 1 };
5580                                  v1 = vec_add(v1, v2);" ||
5581             disable altivec
5582
5583         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5584     fi
5585
5586     if enabled vsx; then
5587         check_cflags -mvsx &&
5588         check_code cc altivec.h "int v[4] = { 0 };
5589                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5590             disable vsx
5591     fi
5592
5593     if enabled power8; then
5594         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5595     fi
5596
5597 elif enabled x86; then
5598
5599     check_builtin rdtsc    intrin.h   "__rdtsc()"
5600     check_builtin mm_empty mmintrin.h "_mm_empty()"
5601
5602     enable local_aligned
5603
5604     # check whether EBP is available on x86
5605     # As 'i' is stored on the stack, this program will crash
5606     # if the base pointer is used to access it because the
5607     # base pointer is cleared in the inline assembly code.
5608     check_exec_crash <<EOF && enable ebp_available
5609 volatile int i=0;
5610 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5611 return i;
5612 EOF
5613
5614     # check whether EBX is available on x86
5615     check_inline_asm ebx_available '""::"b"(0)' &&
5616         check_inline_asm ebx_available '"":::"%ebx"'
5617
5618     # check whether xmm clobbers are supported
5619     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5620
5621     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5622         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5623
5624     # check whether binutils is new enough to compile SSSE3/MMXEXT
5625     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5626     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5627
5628     probe_x86asm(){
5629         x86asmexe_probe=$1
5630         if check_cmd $x86asmexe_probe -v; then
5631             x86asmexe=$x86asmexe_probe
5632             x86asm_type=nasm
5633             x86asm_debug="-g -F dwarf"
5634         elif check_cmd $x86asmexe_probe --version; then
5635             x86asmexe=$x86asmexe_probe
5636             x86asm_type=yasm
5637             x86asm_debug="-g dwarf2"
5638         fi
5639         check_x86asm "movbe ecx, [5]" && enable x86asm
5640     }
5641
5642     if ! disabled_any asm mmx x86asm; then
5643         disable x86asm
5644         for program in $x86asmexe nasm yasm; do
5645             probe_x86asm $program && break
5646         done
5647         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5648         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5649         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5650         X86ASMFLAGS="-f $objformat"
5651         enabled pic               && append X86ASMFLAGS "-DPIC"
5652         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5653         case "$objformat" in
5654             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5655         esac
5656
5657         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5658         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5659         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5660         check_x86asm "CPU amdnop" || disable cpunop
5661     fi
5662
5663     case "$cpu" in
5664         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5665             disable fast_clz
5666         ;;
5667     esac
5668
5669 fi
5670
5671 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5672
5673 check_ldflags -Wl,--as-needed
5674 check_ldflags -Wl,-z,noexecstack
5675
5676 if ! disabled network; then
5677     check_func getaddrinfo $network_extralibs
5678     check_func inet_aton $network_extralibs
5679
5680     check_type netdb.h "struct addrinfo"
5681     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5682     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5683     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5684     check_type poll.h "struct pollfd"
5685     check_type netinet/sctp.h "struct sctp_event_subscribe"
5686     check_struct "sys/socket.h" "struct msghdr" msg_flags
5687     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5688     check_type netinet/in.h "struct sockaddr_in6"
5689     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5690     check_type "sys/types.h sys/socket.h" socklen_t
5691
5692     # Prefer arpa/inet.h over winsock2
5693     if check_header arpa/inet.h ; then
5694         check_func closesocket
5695     elif check_header winsock2.h ; then
5696         check_func_headers winsock2.h closesocket -lws2 &&
5697             network_extralibs="-lws2" ||
5698         { check_func_headers winsock2.h closesocket -lws2_32 &&
5699             network_extralibs="-lws2_32"; } || disable winsock2_h network
5700         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5701
5702         check_type ws2tcpip.h socklen_t
5703         check_type ws2tcpip.h "struct addrinfo"
5704         check_type ws2tcpip.h "struct group_source_req"
5705         check_type ws2tcpip.h "struct ip_mreq_source"
5706         check_type ws2tcpip.h "struct ipv6_mreq"
5707         check_type winsock2.h "struct pollfd"
5708         check_struct winsock2.h "struct sockaddr" sa_len
5709         check_type ws2tcpip.h "struct sockaddr_in6"
5710         check_type ws2tcpip.h "struct sockaddr_storage"
5711     else
5712         disable network
5713     fi
5714 fi
5715
5716 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5717 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5718 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5719 check_builtin sarestart signal.h "SA_RESTART"
5720 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5721 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5722 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5723 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5724
5725 case "$custom_allocator" in
5726     jemalloc)
5727         # jemalloc by default does not use a prefix
5728         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5729     ;;
5730     tcmalloc)
5731         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5732         malloc_prefix=tc_
5733     ;;
5734 esac
5735
5736 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5737 check_func  ${malloc_prefix}memalign            && enable memalign
5738 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5739
5740 check_func  access
5741 check_func_headers stdlib.h arc4random
5742 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5743 check_func  fcntl
5744 check_func  fork
5745 check_func  gethrtime
5746 check_func  getopt
5747 check_func  getrusage
5748 check_func  gettimeofday
5749 check_func  isatty
5750 check_func  mach_absolute_time
5751 check_func  mkstemp
5752 check_func  mmap
5753 check_func  mprotect
5754 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5755 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5756 check_func  sched_getaffinity
5757 check_func  setrlimit
5758 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5759 check_func  strerror_r
5760 check_func  sysconf
5761 check_func  sysctl
5762 check_func  usleep
5763
5764 check_func_headers conio.h kbhit
5765 check_func_headers io.h setmode
5766 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5767 check_func_headers stdlib.h getenv
5768 check_func_headers sys/stat.h lstat
5769
5770 check_func_headers windows.h GetProcessAffinityMask
5771 check_func_headers windows.h GetProcessTimes
5772 check_func_headers windows.h GetSystemTimeAsFileTime
5773 check_func_headers windows.h LoadLibrary
5774 check_func_headers windows.h MapViewOfFile
5775 check_func_headers windows.h PeekNamedPipe
5776 check_func_headers windows.h SetConsoleTextAttribute
5777 check_func_headers windows.h SetConsoleCtrlHandler
5778 check_func_headers windows.h Sleep
5779 check_func_headers windows.h VirtualAlloc
5780 check_struct windows.h "CONDITION_VARIABLE" Ptr
5781 check_func_headers glob.h glob
5782 enabled xlib &&
5783     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5784
5785 check_header d3d11.h
5786 check_header direct.h
5787 check_header dirent.h
5788 check_header dlfcn.h
5789 check_header dxgidebug.h
5790 check_header dxva.h
5791 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5792 check_header io.h
5793 check_header libcrystalhd/libcrystalhd_if.h
5794 check_header mach/mach_time.h
5795 check_header malloc.h
5796 check_header net/udplite.h
5797 check_header poll.h
5798 check_header sys/mman.h
5799 check_header sys/param.h
5800 check_header sys/resource.h
5801 check_header sys/select.h
5802 check_header sys/time.h
5803 check_header sys/un.h
5804 check_header termios.h
5805 check_header unistd.h
5806 check_header valgrind/valgrind.h
5807 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5808 check_header windows.h
5809 check_header X11/extensions/XvMClib.h
5810 check_header asm/types.h
5811
5812 # it seems there are versions of clang in some distros that try to use the
5813 # gcc headers, which explodes for stdatomic
5814 # so we also check that atomics actually work here
5815 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5816
5817 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5818 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5819 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5820 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5821
5822 enabled appkit       && check_apple_framework AppKit
5823 enabled audiotoolbox && check_apple_framework AudioToolbox
5824 enabled avfoundation && check_apple_framework AVFoundation
5825 enabled coreimage    && check_apple_framework CoreImage
5826 enabled videotoolbox && check_apple_framework VideoToolbox
5827
5828 check_apple_framework CoreFoundation
5829 check_apple_framework CoreMedia
5830 check_apple_framework CoreVideo
5831
5832 enabled avfoundation && {
5833     disable coregraphics applicationservices
5834     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5835     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5836
5837 enabled videotoolbox && {
5838     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5839     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5840 }
5841
5842 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5843
5844 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5845 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5846 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5847 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5848 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5849
5850 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5851 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5852 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5853 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5854 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5855 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5856 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5857 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5858 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5859
5860 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5861
5862 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5863
5864 if ! disabled w32threads && ! enabled pthreads; then
5865     check_func_headers "windows.h process.h" _beginthreadex &&
5866         enable w32threads || disable w32threads
5867     if ! enabled w32threads && enabled winrt; then
5868         check_func_headers "windows.h" CreateThread &&
5869             enable w32threads || disable w32threads
5870     fi
5871 fi
5872
5873 # check for some common methods of building with pthread support
5874 # do this before the optional library checks as some of them require pthreads
5875 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5876     if check_lib pthreads pthread.h pthread_join   -pthread &&
5877        check_lib pthreads pthread.h pthread_create -pthread; then
5878         add_cflags -pthread
5879     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5880          check_lib pthreads pthread.h pthread_create -pthreads; then
5881         add_cflags -pthreads
5882     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5883          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5884         add_cflags -ldl -pthread
5885     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5886          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5887         :
5888     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5889          check_lib pthreads pthread.h pthread_create -lpthread; then
5890         :
5891     elif check_func pthread_join && check_func pthread_create; then
5892         enable pthreads
5893     fi
5894     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5895 fi
5896
5897
5898 if enabled pthreads; then
5899   check_func pthread_cancel $pthreads_extralibs
5900 fi
5901
5902 enabled pthreads &&
5903     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5904
5905 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5906 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5907 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5908
5909 # On some systems dynamic loading requires no extra linker flags
5910 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5911
5912 check_lib libm math.h sin -lm
5913
5914 atan2f_args=2
5915 copysign_args=2
5916 hypot_args=2
5917 ldexpf_args=2
5918 powf_args=2
5919
5920 for func in $MATH_FUNCS; do
5921     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5922 done
5923
5924 for func in $COMPLEX_FUNCS; do
5925     eval check_complexfunc $func \${${func}_args:-1}
5926 done
5927
5928 # these are off by default, so fail if requested and not available
5929 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5930 enabled cuvid             && { enabled cuda ||
5931                                die "ERROR: CUVID requires CUDA"; }
5932 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5933 enabled decklink          && { require_header DeckLinkAPI.h &&
5934                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5935 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5936 enabled frei0r            && require_header frei0r.h
5937 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5938 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5939 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5940 enabled ladspa            && require_header ladspa.h
5941 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5942 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5943 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5944 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5945 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5946                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5947                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5948 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5949 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5950 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5951 enabled libfdk_aac        && { use_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5952                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5953                                  warn "using libfdk without pkg-config"; } }
5954 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"
5955 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5956 enabled fontconfig        && enable libfontconfig
5957 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5958 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5959 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5960 enabled libgme            && { use_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5961                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5962 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5963                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5964                                done || die "ERROR: libgsm not found"; }
5965 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5966 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5967 # While it may appear that require is being used as a pkg-config
5968 # fallback for libmfx, it is actually being used to detect a different
5969 # installation route altogether.  If libmfx is installed via the Intel
5970 # Media SDK or Intel Media Server Studio, these don't come with
5971 # pkg-config support.  Instead, users should make sure that the build
5972 # can find the libraries and headers through other means.
5973 enabled libmfx            && { use_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5974                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5975 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5976 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5977 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5978 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5979                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5980                                die "ERROR: libnpp not found"; }
5981 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5982 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5983 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5984                                { use_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5985                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5986                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5987 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5988 enabled libopenjpeg       && { use_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5989                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5990 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5991 enabled libopus           && {
5992     enabled libopus_decoder && {
5993         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5994     }
5995     enabled libopus_encoder && {
5996         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5997     }
5998 }
5999 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6000 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6001 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6002 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6003 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6004 enabled libsmbclient      && { use_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6005                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6006 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6007 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6008 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6009 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
6010 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6011 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6012 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6013                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6014                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6015 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6016 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6017 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
6018 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6019 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6020                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6021
6022 enabled libvpx            && {
6023     enabled libvpx_vp8_decoder && {
6024         use_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6025             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
6026                 die "ERROR: libvpx decoder version must be >=0.9.1";
6027     }
6028     enabled libvpx_vp8_encoder && {
6029         use_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6030             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
6031                 die "ERROR: libvpx encoder version must be >=0.9.7";
6032     }
6033     enabled libvpx_vp9_decoder && {
6034         use_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6035             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
6036     }
6037     enabled libvpx_vp9_encoder && {
6038         use_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6039             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6040     }
6041     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6042         die "libvpx enabled but no supported decoders found"
6043     fi
6044 }
6045
6046 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6047 enabled libwebp           && {
6048     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6049     enabled libwebp_anim_encoder && use_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6050 enabled libx264           && { use_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6051                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6052                                  warn "using libx264 without pkg-config"; } } &&
6053                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6054                              { check_cpp_condition x264.h "X264_MPEG2" &&
6055                                enable libx262; }
6056 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6057                              require_cpp_condition x265.h "X265_BUILD >= 68"
6058 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6059 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6060 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
6061 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6062 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6063                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6064                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6065 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6066 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6067 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6068                                { ! enabled cross_compile &&
6069                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6070                                  add_ldflags -L/opt/vc/lib/ &&
6071                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6072                                die "ERROR: mmal not found" &&
6073                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6074 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6075                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6076                                die "ERROR: openal not found"; } &&
6077                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6078                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6079 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6080                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6081                                die "ERROR: opencl not found"; } &&
6082                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6083                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6084                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6085 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6086                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6087                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6088                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6089                                die "ERROR: opengl not found."
6090                              }
6091 enabled omx               && require_header OMX_Core.h
6092 enabled omx_rpi           && { check_header OMX_Core.h ||
6093                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6094                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6095 enabled openssl           && { use_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6096                                use_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6097                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6098                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6099                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6100                                die "ERROR: openssl not found"; }
6101 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
6102                                  die "ERROR : Rockchip MPP was not found."; } &&
6103                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
6104                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
6105                                { enabled libdrm ||
6106                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6107                              }
6108
6109 if enabled gcrypt; then
6110     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6111     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6112         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6113         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6114         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6115             die "ERROR: gcrypt not found"
6116         add_cflags $gcrypt_cflags
6117     else
6118         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6119     fi
6120 fi
6121
6122 if enabled sdl2; then
6123     SDL2_CONFIG="${cross_prefix}sdl2-config"
6124     if check_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6125         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6126             disable sdl2
6127     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6128         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6129         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6130         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6131         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6132         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6133             enable sdl2
6134     fi
6135     if test $target_os = "mingw32"; then
6136         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6137     fi
6138 fi
6139
6140 if enabled decklink; then
6141     case $target_os in
6142         mingw32*|mingw64*|win32|win64)
6143             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6144             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6145             ;;
6146     esac
6147 fi
6148
6149 enabled securetransport &&
6150     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6151     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6152         disable securetransport
6153
6154 enabled schannel &&
6155     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6156     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6157     schannel_extralibs="-lsecur32" ||
6158         disable schannel
6159
6160 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6161 enabled makeinfo \
6162     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6163     && enable makeinfo_html || disable makeinfo_html
6164 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6165 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6166 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6167 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6168
6169 # check V4L2 codecs available in the API
6170 check_header linux/fb.h
6171 check_header linux/videodev2.h
6172 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6173 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6174 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6175 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6176 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6177 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6178 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6179 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6180 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6181 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6182 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6183
6184 check_header sys/videoio.h
6185 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6186
6187 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6188 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6189 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6190 # w32api 3.12 had it defined wrong
6191 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6192
6193 check_type "dshow.h" IBaseFilter
6194
6195 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6196 { check_header dev/bktr/ioctl_meteor.h &&
6197   check_header dev/bktr/ioctl_bt848.h; } ||
6198 { check_header machine/ioctl_meteor.h &&
6199   check_header machine/ioctl_bt848.h; } ||
6200 { check_header dev/video/meteor/ioctl_meteor.h &&
6201   check_header dev/video/bktr/ioctl_bt848.h; } ||
6202 check_header dev/ic/bt8xx.h
6203
6204 if check_struct sys/soundcard.h audio_buf_info bytes; then
6205     enable_sanitized sys/soundcard.h
6206 else
6207     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6208     #include <sys/soundcard.h>
6209     audio_buf_info abc;
6210 EOF
6211 fi
6212 check_header soundcard.h
6213
6214 enabled alsa && use_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6215     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6216
6217 enabled libjack &&
6218     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6219
6220 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6221
6222 if enabled libcdio; then
6223     use_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6224     use_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6225     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6226     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6227     die "ERROR: No usable libcdio/cdparanoia found"
6228 fi
6229
6230 enabled libxcb && use_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6231     disable libxcb_shm libxcb_shape libxcb_xfixes
6232
6233 if enabled libxcb; then
6234     enabled libxcb_shm    && use_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6235     enabled libxcb_shape  && use_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6236     enabled libxcb_xfixes && use_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6237 fi
6238
6239 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6240
6241 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6242 # the desktop api partition
6243 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6244 #ifdef WINAPI_FAMILY
6245 #include <winapifamily.h>
6246 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6247 #error desktop, not uwp
6248 #else
6249 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6250 #endif
6251 #else
6252 #error no family set
6253 #endif
6254 EOF
6255
6256 enabled vaapi &&
6257     check_lib vaapi va/va.h vaInitialize -lva
6258
6259 enabled vaapi &&
6260     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6261     disable vaapi
6262
6263 enabled vaapi &&
6264     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6265
6266 enabled vaapi &&
6267     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6268
6269 enabled vaapi &&
6270     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6271     enable vaapi_1
6272
6273 enabled vdpau &&
6274     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6275     disable vdpau
6276
6277 enabled vdpau &&
6278     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6279
6280 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6281
6282 if enabled x86; then
6283     case $target_os in
6284         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6285             ;;
6286         *)
6287             disable cuda cuvid nvenc
6288             ;;
6289     esac
6290 else
6291     disable cuda cuvid nvenc
6292 fi
6293
6294 enabled nvenc &&
6295     check_cc -I$source_path <<EOF || disable nvenc
6296 #include "compat/nvenc/nvEncodeAPI.h"
6297 NV_ENCODE_API_FUNCTION_LIST flist;
6298 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6299 int main(void) { return 0; }
6300 EOF
6301
6302 # Funny iconv installations are not unusual, so check it after all flags have been set
6303 if enabled libc_iconv; then
6304     check_func_headers iconv.h iconv
6305 elif enabled iconv; then
6306     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6307 fi
6308
6309 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6310
6311 # add some useful compiler flags if supported
6312 check_cflags -Wdeclaration-after-statement
6313 check_cflags -Wall
6314 check_cflags -Wdisabled-optimization
6315 check_cflags -Wpointer-arith
6316 check_cflags -Wredundant-decls
6317 check_cflags -Wwrite-strings
6318 check_cflags -Wtype-limits
6319 check_cflags -Wundef
6320 check_cflags -Wmissing-prototypes
6321 check_cflags -Wno-pointer-to-int-cast
6322 check_cflags -Wstrict-prototypes
6323 check_cflags -Wempty-body
6324
6325 if enabled extra_warnings; then
6326     check_cflags -Wcast-qual
6327     check_cflags -Wextra
6328     check_cflags -Wpedantic
6329 fi
6330
6331 check_disable_warning(){
6332     warning_flag=-W${1#-Wno-}
6333     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6334 }
6335
6336 test_cflags -Werror=unused-command-line-argument &&
6337     append unknown_warning_flags "-Werror=unused-command-line-argument"
6338 test_cflags -Werror=unknown-warning-option &&
6339     append unknown_warning_flags "-Werror=unknown-warning-option"
6340
6341 check_disable_warning -Wno-parentheses
6342 check_disable_warning -Wno-switch
6343 check_disable_warning -Wno-format-zero-length
6344 check_disable_warning -Wno-pointer-sign
6345 check_disable_warning -Wno-unused-const-variable
6346 check_disable_warning -Wno-bool-operation
6347
6348 check_disable_warning_headers(){
6349     warning_flag=-W${1#-Wno-}
6350     test_cflags $warning_flag && add_cflags_headers $1
6351 }
6352
6353 check_disable_warning_headers -Wno-deprecated-declarations
6354 check_disable_warning_headers -Wno-unused-variable
6355
6356 check_cc <<EOF && enable blocks_extension
6357 void (^block)(void);
6358 EOF
6359
6360 # add some linker flags
6361 check_ldflags -Wl,--warn-common
6362 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6363 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6364 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6365 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6366
6367 # add some strip flags
6368 check_stripflags -x
6369
6370 enabled neon_clobber_test &&
6371     check_ldflags -Wl,--wrap,avcodec_open2              \
6372                   -Wl,--wrap,avcodec_decode_audio4      \
6373                   -Wl,--wrap,avcodec_decode_video2      \
6374                   -Wl,--wrap,avcodec_decode_subtitle2   \
6375                   -Wl,--wrap,avcodec_encode_audio2      \
6376                   -Wl,--wrap,avcodec_encode_video2      \
6377                   -Wl,--wrap,avcodec_encode_subtitle    \
6378                   -Wl,--wrap,avcodec_send_packet        \
6379                   -Wl,--wrap,avcodec_receive_packet     \
6380                   -Wl,--wrap,avcodec_send_frame         \
6381                   -Wl,--wrap,avcodec_receive_frame      \
6382                   -Wl,--wrap,swr_convert                \
6383                   -Wl,--wrap,avresample_convert ||
6384     disable neon_clobber_test
6385
6386 enabled xmm_clobber_test &&
6387     check_ldflags -Wl,--wrap,avcodec_open2              \
6388                   -Wl,--wrap,avcodec_decode_audio4      \
6389                   -Wl,--wrap,avcodec_decode_video2      \
6390                   -Wl,--wrap,avcodec_decode_subtitle2   \
6391                   -Wl,--wrap,avcodec_encode_audio2      \
6392                   -Wl,--wrap,avcodec_encode_video2      \
6393                   -Wl,--wrap,avcodec_encode_subtitle    \
6394                   -Wl,--wrap,avcodec_send_packet        \
6395                   -Wl,--wrap,avcodec_receive_packet     \
6396                   -Wl,--wrap,avcodec_send_frame         \
6397                   -Wl,--wrap,avcodec_receive_frame      \
6398                   -Wl,--wrap,swr_convert                \
6399                   -Wl,--wrap,avresample_convert         \
6400                   -Wl,--wrap,sws_scale ||
6401     disable xmm_clobber_test
6402
6403 check_ld "cc" <<EOF && enable proper_dce
6404 extern const int array[512];
6405 static inline int func(void) { return array[0]; }
6406 int main(void) { return 0; }
6407 EOF
6408
6409 if enabled proper_dce; then
6410     echo "X { local: *; };" > $TMPV
6411     if test_ldflags -Wl,${version_script},$TMPV; then
6412         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6413         check_cc <<EOF && enable symver_asm_label
6414 void ff_foo(void) __asm__ ("av_foo@VERSION");
6415 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6416 EOF
6417         check_cc <<EOF && enable symver_gnu_asm
6418 __asm__(".symver ff_foo,av_foo@VERSION");
6419 void ff_foo(void) {}
6420 EOF
6421     fi
6422 fi
6423
6424 if [ -z "$optflags" ]; then
6425     if enabled small; then
6426         optflags=$cflags_size
6427     elif enabled optimizations; then
6428         optflags=$cflags_speed
6429     else
6430         optflags=$cflags_noopt
6431     fi
6432 fi
6433
6434 if [ -z "$nvccflags" ]; then
6435     nvccflags=$nvccflags_default
6436 fi
6437
6438 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6439     nvccflags="$nvccflags -m64"
6440 else
6441     nvccflags="$nvccflags -m32"
6442 fi
6443
6444 check_optflags(){
6445     check_cflags "$@"
6446     enabled lto && check_ldflags "$@"
6447 }
6448
6449 check_optflags $optflags
6450 check_optflags -fno-math-errno
6451 check_optflags -fno-signed-zeros
6452
6453 if enabled lto; then
6454     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6455     check_cflags  -flto
6456     check_ldflags -flto $cpuflags
6457     disable inline_asm_direct_symbol_refs
6458 fi
6459
6460 enabled ftrapv && check_cflags -ftrapv
6461
6462 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6463 int x;
6464 EOF
6465
6466
6467 if enabled icc; then
6468     # Just warnings, no remarks
6469     check_cflags -w1
6470     # -wd: Disable following warnings
6471     # 144, 167, 556: -Wno-pointer-sign
6472     # 188: enumerated type mixed with another type
6473     # 1292: attribute "foo" ignored
6474     # 1419: external declaration in primary source file
6475     # 10006: ignoring unknown option -fno-signed-zeros
6476     # 10148: ignoring unknown option -Wno-parentheses
6477     # 10156: ignoring option '-W'; no argument required
6478     # 13200: No EMMS instruction before call to function
6479     # 13203: No EMMS instruction before return from function
6480     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6481     # 11030: Warning unknown option --as-needed
6482     # 10156: ignoring option '-export'; no argument required
6483     check_ldflags -wd10156,11030
6484     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6485     enable ebp_available
6486     # The test above does not test linking
6487     enabled lto && disable symver_asm_label
6488     if enabled x86_32; then
6489         icc_version=$($cc -dumpversion)
6490         test ${icc_version%%.*} -ge 11 &&
6491             check_cflags -falign-stack=maintain-16-byte ||
6492             disable aligned_stack
6493     fi
6494 elif enabled ccc; then
6495     # disable some annoying warnings
6496     add_cflags -msg_disable bitnotint
6497     add_cflags -msg_disable mixfuncvoid
6498     add_cflags -msg_disable nonstandcast
6499     add_cflags -msg_disable unsupieee
6500 elif enabled gcc; then
6501     check_optflags -fno-tree-vectorize
6502     check_cflags -Werror=format-security
6503     check_cflags -Werror=implicit-function-declaration
6504     check_cflags -Werror=missing-prototypes
6505     check_cflags -Werror=return-type
6506     check_cflags -Werror=vla
6507     check_cflags -Wformat
6508     check_cflags -fdiagnostics-color=auto
6509     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6510 elif enabled llvm_gcc; then
6511     check_cflags -mllvm -stack-alignment=16
6512 elif enabled clang; then
6513     check_cflags -mllvm -stack-alignment=16
6514     check_cflags -mstack-alignment=16
6515     check_cflags -Qunused-arguments
6516     check_cflags -Werror=implicit-function-declaration
6517     check_cflags -Werror=missing-prototypes
6518     check_cflags -Werror=return-type
6519 elif enabled cparser; then
6520     add_cflags -Wno-missing-variable-declarations
6521     add_cflags -Wno-empty-statement
6522 elif enabled armcc; then
6523     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6524     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6525     # 2523: use of inline assembly is deprecated
6526     add_cflags -W${armcc_opt},--diag_suppress=2523
6527     add_cflags -W${armcc_opt},--diag_suppress=1207
6528     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6529     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6530     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6531     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6532 elif enabled tms470; then
6533     add_cflags -pds=824 -pds=837
6534     disable inline_asm
6535 elif enabled pathscale; then
6536     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6537     disable inline_asm
6538 elif enabled_any msvc icl; then
6539     enabled x86_32 && disable aligned_stack
6540     enabled_all x86_32 debug && add_cflags -Oy-
6541     enabled debug && add_ldflags -debug
6542     enable pragma_deprecated
6543     if enabled icl; then
6544         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6545         # (correctly) on icl 13.x.
6546         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6547             add_cflags -Qansi-alias
6548         # Some inline asm is not compilable in debug
6549         if enabled debug; then
6550             disable ebp_available
6551             disable ebx_available
6552         fi
6553     fi
6554     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6555     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6556     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6557     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6558     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6559     # MSVC 2013 and newer can handle it fine.
6560     # If this declspec fails, force including stdlib.h before the restrict redefinition
6561     # happens in config.h.
6562     if [ $_restrict != restrict ]; then
6563         check_cc <<EOF || add_cflags -FIstdlib.h
6564 __declspec($_restrict) void* foo(int);
6565 EOF
6566     fi
6567     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6568     # Issue has been fixed in MSVC v19.00.24218.
6569     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6570         check_cflags -d2SSAOptimizer-
6571     # enable utf-8 source processing on VS2015 U2 and newer
6572     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6573         add_cflags -utf-8
6574 fi
6575
6576 for pfx in "" host_; do
6577     varname=${pfx%_}cc_type
6578     eval "type=\$$varname"
6579     if [ "$type" = "msvc" ]; then
6580         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6581 static inline int foo(int a) { return a; }
6582 EOF
6583     fi
6584 done
6585
6586 case $as_type in
6587     clang)
6588         add_asflags -Qunused-arguments
6589     ;;
6590 esac
6591
6592 case $ld_type in
6593     clang)
6594         check_ldflags -Qunused-arguments
6595     ;;
6596 esac
6597
6598 case $target_os in
6599     osf1)
6600         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6601     ;;
6602 esac
6603
6604 enable frame_thread_encoder
6605
6606 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6607
6608 check_deps $CONFIG_LIST       \
6609            $CONFIG_EXTRA      \
6610            $HAVE_LIST         \
6611            $ALL_COMPONENTS    \
6612
6613 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"
6614
6615
6616 if test $target_os = "haiku"; then
6617     disable memalign
6618     disable posix_memalign
6619 fi
6620
6621 flatten_extralibs(){
6622     unset nested_entries
6623     list_name=$1
6624     eval list=\$${1}
6625     for entry in $list; do
6626         entry_copy=$entry
6627         resolve entry_copy
6628         append nested_entries $(filter '*_extralibs' $entry_copy)
6629         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6630         eval $entry="\$flat_entries"
6631     done
6632     append $list_name "$nested_entries"
6633
6634     resolve nested_entries
6635     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6636         flatten_extralibs $list_name
6637     fi
6638 }
6639
6640 for linkunit in $LIBRARY_LIST; do
6641     unset current_extralibs
6642     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6643     for comp in ${components}; do
6644         enabled $comp || continue
6645         comp_extralibs="${comp}_extralibs"
6646         append current_extralibs $comp_extralibs
6647     done
6648     eval prepend ${linkunit}_extralibs $current_extralibs
6649 done
6650
6651 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6652     flatten_extralibs ${linkunit}_extralibs
6653     unique  ${linkunit}_extralibs
6654     resolve ${linkunit}_extralibs
6655     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
6656 done
6657
6658 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6659
6660 for thread in $THREADS_LIST; do
6661     if enabled $thread; then
6662         test -n "$thread_type" &&
6663             die "ERROR: Only one thread type must be selected." ||
6664             thread_type="$thread"
6665     fi
6666 done
6667
6668 if disabled stdatomic_h; then
6669     if enabled atomics_gcc; then
6670         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6671     elif enabled atomics_win32; then
6672         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6673     elif enabled atomics_suncc; then
6674         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6675     elif enabled pthreads; then
6676         add_compat atomics/pthread/stdatomic.o
6677         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6678     else
6679         enabled threads && die "Threading is enabled, but no atomics are available"
6680         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6681     fi
6682 fi
6683
6684 # Check if requested libraries were found.
6685 for lib in $AUTODETECT_LIBS; do
6686     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6687 done
6688
6689 enabled zlib && add_cppflags -DZLIB_CONST
6690
6691 # conditional library dependencies, in linking order
6692 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6693 enabled afir_filter         && prepend avfilter_deps "avcodec"
6694 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6695 enabled aresample_filter    && prepend avfilter_deps "swresample"
6696 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6697 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6698 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6699 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6700 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6701 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6702 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6703 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6704 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6705 enabled pan_filter          && prepend avfilter_deps "swresample"
6706 enabled pp_filter           && prepend avfilter_deps "postproc"
6707 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6708 enabled resample_filter && prepend avfilter_deps "avresample"
6709 enabled sab_filter          && prepend avfilter_deps "swscale"
6710 enabled scale_filter    && prepend avfilter_deps "swscale"
6711 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6712 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6713 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6714 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6715 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6716 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6717 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6718 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6719 enabled spp_filter          && prepend avfilter_deps "avcodec"
6720 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6721 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6722 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6723
6724 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6725
6726 #FIXME
6727 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6728
6729 enabled opus_decoder    && prepend avcodec_deps "swresample"
6730
6731 expand_deps(){
6732     lib_deps=${1}_deps
6733     eval "deps=\$$lib_deps"
6734     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6735     unique $lib_deps
6736 }
6737
6738 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6739 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6740
6741 map 'expand_deps $v' $LIBRARY_LIST
6742
6743 license="LGPL version 2.1 or later"
6744 if enabled nonfree; then
6745     license="nonfree and unredistributable"
6746 elif enabled gplv3; then
6747     license="GPL version 3 or later"
6748 elif enabled lgplv3; then
6749     license="LGPL version 3 or later"
6750 elif enabled gpl; then
6751     license="GPL version 2 or later"
6752 fi
6753
6754 if test "$quiet" != "yes"; then
6755
6756 echo "install prefix            $prefix"
6757 echo "source path               $source_path"
6758 echo "C compiler                $cc"
6759 echo "C library                 $libc_type"
6760 if test "$host_cc" != "$cc"; then
6761     echo "host C compiler           $host_cc"
6762     echo "host C library            $host_libc_type"
6763 fi
6764 echo "ARCH                      $arch ($cpu)"
6765 if test "$build_suffix" != ""; then
6766     echo "build suffix              $build_suffix"
6767 fi
6768 if test "$progs_suffix" != ""; then
6769     echo "progs suffix              $progs_suffix"
6770 fi
6771 if test "$extra_version" != ""; then
6772     echo "version string suffix     $extra_version"
6773 fi
6774 echo "big-endian                ${bigendian-no}"
6775 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6776 if enabled x86; then
6777     echo "standalone assembly       ${x86asm-no}"
6778     echo "x86 assembler             ${x86asmexe}"
6779     echo "MMX enabled               ${mmx-no}"
6780     echo "MMXEXT enabled            ${mmxext-no}"
6781     echo "3DNow! enabled            ${amd3dnow-no}"
6782     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6783     echo "SSE enabled               ${sse-no}"
6784     echo "SSSE3 enabled             ${ssse3-no}"
6785     echo "AESNI enabled             ${aesni-no}"
6786     echo "AVX enabled               ${avx-no}"
6787     echo "AVX2 enabled              ${avx2-no}"
6788     echo "XOP enabled               ${xop-no}"
6789     echo "FMA3 enabled              ${fma3-no}"
6790     echo "FMA4 enabled              ${fma4-no}"
6791     echo "i686 features enabled     ${i686-no}"
6792     echo "CMOV is fast              ${fast_cmov-no}"
6793     echo "EBX available             ${ebx_available-no}"
6794     echo "EBP available             ${ebp_available-no}"
6795 fi
6796 if enabled aarch64; then
6797     echo "NEON enabled              ${neon-no}"
6798     echo "VFP enabled               ${vfp-no}"
6799 fi
6800 if enabled arm; then
6801     echo "ARMv5TE enabled           ${armv5te-no}"
6802     echo "ARMv6 enabled             ${armv6-no}"
6803     echo "ARMv6T2 enabled           ${armv6t2-no}"
6804     echo "VFP enabled               ${vfp-no}"
6805     echo "NEON enabled              ${neon-no}"
6806     echo "THUMB enabled             ${thumb-no}"
6807 fi
6808 if enabled mips; then
6809     echo "MIPS FPU enabled          ${mipsfpu-no}"
6810     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6811     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6812     echo "MIPS MSA enabled          ${msa-no}"
6813     echo "LOONGSON MMI enabled      ${mmi-no}"
6814 fi
6815 if enabled ppc; then
6816     echo "AltiVec enabled           ${altivec-no}"
6817     echo "VSX enabled               ${vsx-no}"
6818     echo "POWER8 enabled            ${power8-no}"
6819     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6820     echo "dcbzl available           ${dcbzl-no}"
6821 fi
6822 echo "debug symbols             ${debug-no}"
6823 echo "strip symbols             ${stripping-no}"
6824 echo "optimize for size         ${small-no}"
6825 echo "optimizations             ${optimizations-no}"
6826 echo "static                    ${static-no}"
6827 echo "shared                    ${shared-no}"
6828 echo "postprocessing support    ${postproc-no}"
6829 echo "network support           ${network-no}"
6830 echo "threading support         ${thread_type-no}"
6831 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6832 echo "texi2html enabled         ${texi2html-no}"
6833 echo "perl enabled              ${perl-no}"
6834 echo "pod2man enabled           ${pod2man-no}"
6835 echo "makeinfo enabled          ${makeinfo-no}"
6836 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6837 test -n "$random_seed" &&
6838     echo "random seed               ${random_seed}"
6839 echo
6840
6841 echo "External libraries:"
6842 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6843 echo
6844
6845 echo "External libraries providing hardware acceleration:"
6846 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6847 echo
6848
6849 echo "Libraries:"
6850 print_enabled '' $LIBRARY_LIST | print_in_columns
6851 echo
6852
6853 echo "Programs:"
6854 print_enabled '' $PROGRAM_LIST | print_in_columns
6855 echo
6856
6857 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6858     echo "Enabled ${type}s:"
6859     eval list=\$$(toupper $type)_LIST
6860     print_enabled '_*' $list | print_in_columns
6861     echo
6862 done
6863
6864 if test -n "$ignore_tests"; then
6865     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6866     echo "Ignored FATE tests:"
6867     echo $ignore_tests | print_in_columns
6868     echo
6869 fi
6870
6871 echo "License: $license"
6872
6873 echo "Creating configuration files ..."
6874
6875 fi # test "$quiet" != "yes"
6876
6877 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6878
6879 enabled stripping || strip="echo skipping strip"
6880 enabled stripping || striptype=""
6881
6882 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6883
6884 cat > ffbuild/config.mak <<EOF
6885 # Automatically generated by configure - do not modify!
6886 ifndef FFMPEG_CONFIG_MAK
6887 FFMPEG_CONFIG_MAK=1
6888 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6889 prefix=$prefix
6890 LIBDIR=\$(DESTDIR)$libdir
6891 SHLIBDIR=\$(DESTDIR)$shlibdir
6892 INCDIR=\$(DESTDIR)$incdir
6893 BINDIR=\$(DESTDIR)$bindir
6894 DATADIR=\$(DESTDIR)$datadir
6895 DOCDIR=\$(DESTDIR)$docdir
6896 MANDIR=\$(DESTDIR)$mandir
6897 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6898 INSTALL_NAME_DIR=$install_name_dir
6899 SRC_PATH=$source_path
6900 SRC_LINK=$source_link
6901 ifndef MAIN_MAKEFILE
6902 SRC_PATH:=\$(SRC_PATH:.%=..%)
6903 endif
6904 CC_IDENT=$cc_ident
6905 ARCH=$arch
6906 INTRINSICS=$intrinsics
6907 CC=$cc
6908 CXX=$cxx
6909 AS=$as
6910 OBJCC=$objcc
6911 LD=$ld
6912 DEPCC=$dep_cc
6913 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6914 DEPAS=$as
6915 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6916 X86ASM=$x86asmexe
6917 DEPX86ASM=$x86asmexe
6918 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6919 AR=$ar
6920 ARFLAGS=$arflags
6921 AR_O=$ar_o
6922 RANLIB=$ranlib
6923 STRIP=$strip
6924 STRIPTYPE=$striptype
6925 NVCC=$nvcc
6926 CP=cp -p
6927 LN_S=$ln_s
6928 CPPFLAGS=$CPPFLAGS
6929 CFLAGS=$CFLAGS
6930 CXXFLAGS=$CXXFLAGS
6931 OBJCFLAGS=$OBJCFLAGS
6932 ASFLAGS=$ASFLAGS
6933 NVCCFLAGS=$nvccflags
6934 AS_C=$AS_C
6935 AS_O=$AS_O
6936 OBJCC_C=$OBJCC_C
6937 OBJCC_E=$OBJCC_E
6938 OBJCC_O=$OBJCC_O
6939 CC_C=$CC_C
6940 CC_E=$CC_E
6941 CC_O=$CC_O
6942 CXX_C=$CXX_C
6943 CXX_O=$CXX_O
6944 NVCC_C=$NVCC_C
6945 NVCC_O=$NVCC_O
6946 LD_O=$LD_O
6947 X86ASM_O=$X86ASM_O
6948 LD_LIB=$LD_LIB
6949 LD_PATH=$LD_PATH
6950 DLLTOOL=$dlltool
6951 WINDRES=$windres
6952 DEPWINDRES=$dep_cc
6953 DOXYGEN=$doxygen
6954 LDFLAGS=$LDFLAGS
6955 LDEXEFLAGS=$LDEXEFLAGS
6956 LDLIBFLAGS=$LDLIBFLAGS
6957 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6958 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6959 X86ASMFLAGS=$X86ASMFLAGS
6960 BUILDSUF=$build_suffix
6961 PROGSSUF=$progs_suffix
6962 FULLNAME=$FULLNAME
6963 LIBPREF=$LIBPREF
6964 LIBSUF=$LIBSUF
6965 LIBNAME=$LIBNAME
6966 SLIBPREF=$SLIBPREF
6967 SLIBSUF=$SLIBSUF
6968 EXESUF=$EXESUF
6969 EXTRA_VERSION=$extra_version
6970 CCDEP=$CCDEP
6971 CXXDEP=$CXXDEP
6972 CCDEP_FLAGS=$CCDEP_FLAGS
6973 ASDEP=$ASDEP
6974 ASDEP_FLAGS=$ASDEP_FLAGS
6975 X86ASMDEP=$X86ASMDEP
6976 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6977 CC_DEPFLAGS=$CC_DEPFLAGS
6978 AS_DEPFLAGS=$AS_DEPFLAGS
6979 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6980 HOSTCC=$host_cc
6981 HOSTLD=$host_ld
6982 HOSTCFLAGS=$host_cflags
6983 HOSTCPPFLAGS=$host_cppflags
6984 HOSTEXESUF=$HOSTEXESUF
6985 HOSTLDFLAGS=$host_ldflags
6986 HOSTEXTRALIBS=$host_extralibs
6987 DEPHOSTCC=$host_cc
6988 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6989 HOSTCCDEP=$HOSTCCDEP
6990 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6991 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6992 HOSTCC_C=$HOSTCC_C
6993 HOSTCC_O=$HOSTCC_O
6994 HOSTLD_O=$HOSTLD_O
6995 TARGET_EXEC=$target_exec $target_exec_args
6996 TARGET_PATH=$target_path
6997 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6998 CFLAGS-ffplay=${sdl2_cflags}
6999 CFLAGS_HEADERS=$CFLAGS_HEADERS
7000 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7001 EXTRALIBS=$extralibs
7002 COMPAT_OBJS=$compat_objs
7003 INSTALL=$install
7004 LIBTARGET=${LIBTARGET}
7005 SLIBNAME=${SLIBNAME}
7006 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7007 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7008 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7009 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7010 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7011 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7012 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7013 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7014 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7015 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7016 NOREDZONE_FLAGS=$noredzone_flags
7017 LIBFUZZER_PATH=$libfuzzer_path
7018 IGNORE_TESTS=$ignore_tests
7019 EOF
7020
7021 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7022
7023 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7024     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7025 done
7026
7027 cat > $TMPH <<EOF
7028 /* Automatically generated by configure - do not modify! */
7029 #ifndef FFMPEG_CONFIG_H
7030 #define FFMPEG_CONFIG_H
7031 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7032 #define FFMPEG_LICENSE "$(c_escape $license)"
7033 #define CONFIG_THIS_YEAR 2017
7034 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7035 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7036 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7037 #define av_restrict $_restrict
7038 #define EXTERN_PREFIX "${extern_prefix}"
7039 #define EXTERN_ASM ${extern_prefix}
7040 #define BUILDSUF "$build_suffix"
7041 #define SLIBSUF "$SLIBSUF"
7042 #define HAVE_MMX2 HAVE_MMXEXT
7043 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7044 EOF
7045
7046 test -n "$assert_level" &&
7047     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7048
7049 test -n "$malloc_prefix" &&
7050     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7051
7052 if enabled x86asm; then
7053     append config_files $TMPASM
7054     printf '' >$TMPASM
7055 fi
7056
7057 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7058
7059
7060 mkdir -p doc
7061 mkdir -p tests
7062 mkdir -p tests/api
7063 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7064
7065 print_config ARCH_   "$config_files" $ARCH_LIST
7066 print_config HAVE_   "$config_files" $HAVE_LIST
7067 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7068                                      $CONFIG_EXTRA      \
7069                                      $ALL_COMPONENTS    \
7070
7071 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7072 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7073
7074 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7075 cp_if_changed $TMPH config.h
7076 touch ffbuild/.config
7077
7078 enabled x86asm && cp_if_changed $TMPASM config.asm
7079
7080 cat > $TMPH <<EOF
7081 /* Generated by ffconf */
7082 #ifndef AVUTIL_AVCONFIG_H
7083 #define AVUTIL_AVCONFIG_H
7084 EOF
7085
7086 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7087
7088 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7089
7090 cp_if_changed $TMPH libavutil/avconfig.h
7091
7092 # generate the lists of enabled components
7093 print_enabled_components(){
7094     file=$1
7095     struct_name=$2
7096     name=$3
7097     shift 3
7098     echo "static const $struct_name * const $name[] = {" > $TMPH
7099     for c in $*; do
7100         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7101     done
7102     echo "    NULL };" >> $TMPH
7103     cp_if_changed $TMPH $file
7104 }
7105
7106 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7107 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7108
7109 if test -n "$WARNINGS"; then
7110     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7111     enabled fatal_warnings && exit 1
7112 fi
7113
7114 # Settings for pkg-config files
7115
7116 cat > ffbuild/config.sh <<EOF
7117 # Automatically generated by configure - do not modify!
7118 shared=$shared
7119 build_suffix=$build_suffix
7120 prefix=$prefix
7121 libdir=$libdir
7122 incdir=$incdir
7123 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7124 source_path=${source_path}
7125 LIBPREF=${LIBPREF}
7126 LIBSUF=${LIBSUF}
7127 extralibs_avutil="$avutil_extralibs"
7128 extralibs_avcodec="$avcodec_extralibs"
7129 extralibs_avformat="$avformat_extralibs"
7130 extralibs_avdevice="$avdevice_extralibs"
7131 extralibs_avfilter="$avfilter_extralibs"
7132 extralibs_avresample="$avresample_extralibs"
7133 extralibs_postproc="$postproc_extralibs"
7134 extralibs_swscale="$swscale_extralibs"
7135 extralibs_swresample="$swresample_extralibs"
7136 EOF
7137
7138 for lib in $LIBRARY_LIST; do
7139     lib_deps="$(eval echo \$${lib}_deps)"
7140     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7141 done