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-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 317   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 318   --enable-omx             enable OpenMAX IL code [no]
 319   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 320   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 321   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 324
 325 Toolchain options:
 326   --arch=ARCH              select architecture [$arch]
 327   --cpu=CPU                select the minimum required CPU (affects
 328                            instruction selection, may crash on older CPUs)
 329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 330   --progs-suffix=SUFFIX    program name suffix []
 331   --enable-cross-compile   assume a cross-compiler is used
 332   --sysroot=PATH           root of cross-build tree
 333   --sysinclude=PATH        location of cross-build system headers
 334   --target-os=OS           compiler targets OS [$target_os]
 335   --target-exec=CMD        command to run executables on target
 336   --target-path=DIR        path to view of build directory on target
 337   --target-samples=DIR     path to samples directory on target
 338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 339   --toolchain=NAME         set tool defaults according to NAME
 340   --nm=NM                  use nm tool NM [$nm_default]
 341   --ar=AR                  use archive tool AR [$ar_default]
 342   --as=AS                  use assembler AS [$as_default]
 343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 344   --strip=STRIP            use strip tool STRIP [$strip_default]
 345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 347   --cc=CC                  use C compiler CC [$cc_default]
 348   --cxx=CXX                use C compiler CXX [$cxx_default]
 349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 352   --ld=LD                  use linker LD [$ld_default]
 353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 357   --host-cc=HOSTCC         use host C compiler HOSTCC
 358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 360   --host-ld=HOSTLD         use host linker HOSTLD
 361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 362   --host-libs=HLIBS        use libs HLIBS when linking for host
 363   --host-os=OS             compiler host OS [$target_os]
 364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 369   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 371   --extra-version=STRING   version string suffix []
 372   --optflags=OPTFLAGS      override optimization-related compiler flags
 373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 374   --build-suffix=SUFFIX    library name suffix []
 375   --enable-pic             build position-independent code
 376   --enable-thumb           compile for Thumb instruction set
 377   --enable-lto             use link-time optimization
 378   --env="ENV=override"     override the environment variables
 379
 380 Advanced options (experts only):
 381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 382   --custom-allocator=NAME  use a supported custom allocator
 383   --disable-symver         disable symbol versioning
 384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 385   --disable-safe-bitstream-reader
 386                            disable buffer boundary checking in bitreaders
 387                            (faster, but may crash)
 388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 389
 390 Optimization options (experts only):
 391   --disable-asm            disable all assembly optimizations
 392   --disable-altivec        disable AltiVec optimizations
 393   --disable-vsx            disable VSX optimizations
 394   --disable-power8         disable POWER8 optimizations
 395   --disable-amd3dnow       disable 3DNow! optimizations
 396   --disable-amd3dnowext    disable 3DNow! extended optimizations
 397   --disable-mmx            disable MMX optimizations
 398   --disable-mmxext         disable MMXEXT optimizations
 399   --disable-sse            disable SSE optimizations
 400   --disable-sse2           disable SSE2 optimizations
 401   --disable-sse3           disable SSE3 optimizations
 402   --disable-ssse3          disable SSSE3 optimizations
 403   --disable-sse4           disable SSE4 optimizations
 404   --disable-sse42          disable SSE4.2 optimizations
 405   --disable-avx            disable AVX optimizations
 406   --disable-xop            disable XOP optimizations
 407   --disable-fma3           disable FMA3 optimizations
 408   --disable-fma4           disable FMA4 optimizations
 409   --disable-avx2           disable AVX2 optimizations
 410   --disable-aesni          disable AESNI optimizations
 411   --disable-armv5te        disable armv5te optimizations
 412   --disable-armv6          disable armv6 optimizations
 413   --disable-armv6t2        disable armv6t2 optimizations
 414   --disable-vfp            disable VFP optimizations
 415   --disable-neon           disable NEON optimizations
 416   --disable-inline-asm     disable use of inline assembly
 417   --disable-x86asm         disable use of standalone x86 assembly
 418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 420   --disable-msa            disable MSA optimizations
 421   --disable-mipsfpu        disable floating point MIPS optimizations
 422   --disable-mmi            disable Loongson SIMD optimizations
 423   --disable-fast-unaligned consider unaligned accesses slow
 424
 425 Developer options (useful when working on FFmpeg itself):
 426   --disable-debug          disable debugging symbols
 427   --enable-debug=LEVEL     set the debug level [$debuglevel]
 428   --disable-optimizations  disable compiler optimizations
 429   --enable-extra-warnings  enable more compiler warnings
 430   --disable-stripping      disable stripping of executables and shared libraries
 431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 432                            2 causes a slowdown at runtime.
 433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 435                            leaks and errors, using the specified valgrind binary.
 436                            Cannot be combined with --target-exec
 437   --enable-ftrapv          Trap arithmetic overflows
 438   --samples=PATH           location of test samples for FATE, if not set use
 439                            \$FATE_SAMPLES at make invocation time.
 440   --enable-neon-clobber-test check NEON registers for clobbering (should be
 441                            used only for debugging purposes)
 442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 443                            should be used only for debugging purposes)
 444   --enable-random          randomly enable/disable components
 445   --disable-random
 446   --enable-random=LIST     randomly enable/disable specific components or
 447   --disable-random=LIST    component groups. LIST is a comma-separated list
 448                            of NAME[:PROB] entries where NAME is a component
 449                            (group) and PROB the probability associated with
 450                            NAME (default 0.5).
 451   --random-seed=VALUE      seed value for --enable/disable-random
 452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 453                            (only applies to --disable-optimizations builds)
 454   --enable-osfuzz          Enable building fuzzer tool
 455   --libfuzzer=PATH         path to libfuzzer
 456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 457                            in the name) of tests whose result is ignored
 458   --enable-linux-perf      enable Linux Performance Monitor API
 459
 460 NOTE: Object files are built at the place where configure is launched.
 461 EOF
 462   exit 0
 463 }
 464
 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 $(sanitize_var_name $var)
 642     done
 643 }
 644
 645 disable_sanitized(){
 646     for var; do
 647         disable $(sanitize_var_name $var)
 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_ldsoflags(){
 873     append LDSOFLAGS $($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     set -- $($ldflags_filter "$@")
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     headers=$1
1111     shift
1112     disable_sanitized $headers
1113     {
1114         for hdr in $headers; do
1115             print_include $hdr
1116         done
1117         echo "int x;"
1118     } | check_cpp "$@" && enable_sanitized $headers
1119 }
1120
1121 check_header_objcc(){
1122     log check_header_objcc "$@"
1123     rm -f -- "$TMPO"
1124     header=$1
1125     shift
1126     disable_sanitized $header
1127     {
1128        echo "#include <$header>"
1129        echo "int main(void) { return 0; }"
1130     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1131 }
1132
1133 check_apple_framework(){
1134     log check_apple_framework "$@"
1135     framework="$1"
1136     name="$(tolower $framework)"
1137     header="${framework}/${framework}.h"
1138     disable $name
1139     check_header_objcc $header &&
1140         enable $name && eval ${name}_extralibs='"-framework $framework"'
1141 }
1142
1143 check_func(){
1144     log check_func "$@"
1145     func=$1
1146     shift
1147     disable $func
1148     check_ld "cc" "$@" <<EOF && enable $func
1149 extern int $func();
1150 int main(void){ $func(); }
1151 EOF
1152 }
1153
1154 check_complexfunc(){
1155     log check_complexfunc "$@"
1156     func=$1
1157     narg=$2
1158     shift 2
1159     test $narg = 2 && args="f, g" || args="f * I"
1160     disable $func
1161     check_ld "cc" "$@" <<EOF && enable $func
1162 #include <complex.h>
1163 #include <math.h>
1164 float foo(complex float f, complex float g) { return $func($args); }
1165 int main(void){ return (int) foo; }
1166 EOF
1167 }
1168
1169 check_mathfunc(){
1170     log check_mathfunc "$@"
1171     func=$1
1172     narg=$2
1173     shift 2
1174     test $narg = 2 && args="f, g" || args="f"
1175     disable $func
1176     check_ld "cc" "$@" <<EOF && enable $func
1177 #include <math.h>
1178 float foo(float f, float g) { return $func($args); }
1179 int main(void){ return (int) foo; }
1180 EOF
1181 }
1182
1183 check_func_headers(){
1184     log check_func_headers "$@"
1185     headers=$1
1186     funcs=$2
1187     shift 2
1188     {
1189         for hdr in $headers; do
1190             print_include $hdr
1191         done
1192         echo "#include <stdint.h>"
1193         for func in $funcs; do
1194             echo "long check_$func(void) { return (long) $func; }"
1195         done
1196         echo "int main(void) { int ret = 0;"
1197         # LTO could optimize out the test functions without this
1198         for func in $funcs; do
1199             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1200         done
1201         echo "return ret; }"
1202     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1203 }
1204
1205 check_class_headers_cpp(){
1206     log check_class_headers_cpp "$@"
1207     headers=$1
1208     classes=$2
1209     shift 2
1210     {
1211         for hdr in $headers; do
1212             echo "#include <$hdr>"
1213         done
1214         echo "int main(void) { "
1215         i=1
1216         for class in $classes; do
1217             echo "$class obj$i;"
1218             i=$(expr $i + 1)
1219         done
1220         echo "return 0; }"
1221     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1222 }
1223
1224 check_cpp_condition(){
1225     log check_cpp_condition "$@"
1226     header=$1
1227     condition=$2
1228     shift 2
1229     check_cpp "$@" <<EOF
1230 #include <$header>
1231 #if !($condition)
1232 #error "unsatisfied condition: $condition"
1233 #endif
1234 EOF
1235 }
1236
1237 test_cflags_cc(){
1238     log test_cflags_cc "$@"
1239     flags=$1
1240     header=$2
1241     condition=$3
1242     shift 3
1243     set -- $($cflags_filter "$flags")
1244     check_cc "$@" <<EOF
1245 #include <$header>
1246 #if !($condition)
1247 #error "unsatisfied condition: $condition"
1248 #endif
1249 EOF
1250 }
1251
1252 check_lib(){
1253     log check_lib "$@"
1254     name="$1"
1255     headers="$2"
1256     funcs="$3"
1257     shift 3
1258     disable $name
1259     check_func_headers "$headers" "$funcs" "$@" &&
1260         enable $name && eval ${name}_extralibs="\$@"
1261 }
1262
1263 check_lib_cpp(){
1264     log check_lib_cpp "$@"
1265     name="$1"
1266     headers="$2"
1267     classes="$3"
1268     shift 3
1269     disable $name
1270     check_class_headers_cpp "$headers" "$classes" "$@" &&
1271         enable $name && eval ${name}_extralibs="\$@"
1272 }
1273
1274 test_pkg_config(){
1275     log test_pkg_config "$@"
1276     name="$1"
1277     pkg_version="$2"
1278     pkg="${2%% *}"
1279     headers="$3"
1280     funcs="$4"
1281     shift 4
1282     disable $name
1283     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1284     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1285     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1286     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1287         enable $name &&
1288         set_sanitized "${name}_cflags"    $pkg_cflags &&
1289         set_sanitized "${name}_extralibs" $pkg_libs
1290 }
1291
1292 check_pkg_config(){
1293     log check_pkg_config "$@"
1294     name="$1"
1295     test_pkg_config "$@" &&
1296         eval add_cflags \$${name}_cflags
1297 }
1298
1299 check_exec(){
1300     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1301 }
1302
1303 check_exec_crash(){
1304     log check_exec_crash "$@"
1305     code=$(cat)
1306
1307     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1308     # are safe but may not be available everywhere.  Thus we use
1309     # raise(SIGTERM) instead.  The check is run in a subshell so we
1310     # can redirect the "Terminated" message from the shell.  SIGBUS
1311     # is not defined by standard C so it is used conditionally.
1312
1313     (check_exec "$@") >> $logfile 2>&1 <<EOF
1314 #include <signal.h>
1315 static void sighandler(int sig){
1316     raise(SIGTERM);
1317 }
1318 int foo(void){
1319     $code
1320 }
1321 int (*func_ptr)(void) = foo;
1322 int main(void){
1323     signal(SIGILL, sighandler);
1324     signal(SIGFPE, sighandler);
1325     signal(SIGSEGV, sighandler);
1326 #ifdef SIGBUS
1327     signal(SIGBUS, sighandler);
1328 #endif
1329     return func_ptr();
1330 }
1331 EOF
1332 }
1333
1334 check_type(){
1335     log check_type "$@"
1336     headers=$1
1337     type=$2
1338     shift 2
1339     disable_sanitized "$type"
1340     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1341 }
1342
1343 check_struct(){
1344     log check_struct "$@"
1345     headers=$1
1346     struct=$2
1347     member=$3
1348     shift 3
1349     disable_sanitized "${struct}_${member}"
1350     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1351         enable_sanitized "${struct}_${member}"
1352 }
1353
1354 check_builtin(){
1355     log check_builtin "$@"
1356     name=$1
1357     headers=$2
1358     builtin=$3
1359     shift 3
1360     disable "$name"
1361     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1362 }
1363
1364 check_compile_assert(){
1365     log check_compile_assert "$@"
1366     name=$1
1367     headers=$2
1368     condition=$3
1369     shift 3
1370     disable "$name"
1371     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1372 }
1373
1374 require(){
1375     log require "$@"
1376     name_version="$1"
1377     name="${1%% *}"
1378     headers="$2"
1379     func="$3"
1380     shift 3
1381     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1382 }
1383
1384 require_cpp(){
1385     name="$1"
1386     headers="$2"
1387     classes="$3"
1388     shift 3
1389     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1390 }
1391
1392 require_header(){
1393     log require_header "$@"
1394     headers="$1"
1395     shift
1396     check_header "$headers" "$@" || die "ERROR: $headers not found"
1397 }
1398
1399 require_cpp_condition(){
1400     log require_cpp_condition "$@"
1401     header="$1"
1402     condition="$2"
1403     shift 2
1404     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1405 }
1406
1407 require_pkg_config(){
1408     log require_pkg_config "$@"
1409     pkg_version="$2"
1410     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1411 }
1412
1413 hostcc_e(){
1414     eval printf '%s\\n' $HOSTCC_E
1415 }
1416
1417 hostcc_o(){
1418     eval printf '%s\\n' $HOSTCC_O
1419 }
1420
1421 check_host_cc(){
1422     log check_host_cc "$@"
1423     cat > $TMPC
1424     log_file $TMPC
1425     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1426 }
1427
1428 check_host_cpp(){
1429     log check_host_cpp "$@"
1430     cat > $TMPC
1431     log_file $TMPC
1432     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1433 }
1434
1435 check_host_cppflags(){
1436     log check_host_cppflags "$@"
1437     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1438 #include <stdlib.h>
1439 EOF
1440 }
1441
1442 check_host_cflags(){
1443     log check_host_cflags "$@"
1444     set -- $($host_cflags_filter "$@")
1445     check_host_cc "$@" <<EOF && append host_cflags "$@"
1446 int x;
1447 EOF
1448 }
1449
1450 check_host_cpp_condition(){
1451     log check_host_cpp_condition "$@"
1452     header=$1
1453     condition=$2
1454     shift 2
1455     check_host_cpp "$@" <<EOF
1456 #include <$header>
1457 #if !($condition)
1458 #error "unsatisfied condition: $condition"
1459 #endif
1460 EOF
1461 }
1462
1463 cp_if_changed(){
1464     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1465     mkdir -p "$(dirname $2)"
1466     cp -f "$1" "$2"
1467 }
1468
1469 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1470 # system-dependent things.
1471
1472 AVCODEC_COMPONENTS="
1473     bsfs
1474     decoders
1475     encoders
1476     hwaccels
1477     parsers
1478 "
1479
1480 AVDEVICE_COMPONENTS="
1481     indevs
1482     outdevs
1483 "
1484
1485 AVFILTER_COMPONENTS="
1486     filters
1487 "
1488
1489 AVFORMAT_COMPONENTS="
1490     demuxers
1491     muxers
1492     protocols
1493 "
1494
1495 COMPONENT_LIST="
1496     $AVCODEC_COMPONENTS
1497     $AVDEVICE_COMPONENTS
1498     $AVFILTER_COMPONENTS
1499     $AVFORMAT_COMPONENTS
1500 "
1501
1502 EXAMPLE_LIST="
1503     avio_dir_cmd_example
1504     avio_reading_example
1505     decode_audio_example
1506     decode_video_example
1507     demuxing_decoding_example
1508     encode_audio_example
1509     encode_video_example
1510     extract_mvs_example
1511     filter_audio_example
1512     filtering_audio_example
1513     filtering_video_example
1514     http_multiclient_example
1515     hw_decode_example
1516     metadata_example
1517     muxing_example
1518     qsvdec_example
1519     remuxing_example
1520     resampling_audio_example
1521     scaling_video_example
1522     transcode_aac_example
1523     transcoding_example
1524 "
1525
1526 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1527     alsa
1528     appkit
1529     avfoundation
1530     bzlib
1531     coreimage
1532     iconv
1533     libxcb
1534     libxcb_shm
1535     libxcb_shape
1536     libxcb_xfixes
1537     lzma
1538     schannel
1539     sdl2
1540     securetransport
1541     sndio
1542     xlib
1543     zlib
1544 "
1545
1546 EXTERNAL_LIBRARY_GPL_LIST="
1547     avisynth
1548     frei0r
1549     libcdio
1550     librubberband
1551     libvidstab
1552     libx264
1553     libx265
1554     libxavs
1555     libxvid
1556 "
1557
1558 EXTERNAL_LIBRARY_NONFREE_LIST="
1559     decklink
1560     libndi_newtek
1561     libfdk_aac
1562     openssl
1563 "
1564
1565 EXTERNAL_LIBRARY_VERSION3_LIST="
1566     gmp
1567     libopencore_amrnb
1568     libopencore_amrwb
1569     libvmaf
1570     libvo_amrwbenc
1571     rkmpp
1572 "
1573
1574 EXTERNAL_LIBRARY_GPLV3_LIST="
1575     libsmbclient
1576 "
1577
1578 EXTERNAL_LIBRARY_LIST="
1579     $EXTERNAL_LIBRARY_GPL_LIST
1580     $EXTERNAL_LIBRARY_NONFREE_LIST
1581     $EXTERNAL_LIBRARY_VERSION3_LIST
1582     $EXTERNAL_LIBRARY_GPLV3_LIST
1583     chromaprint
1584     gcrypt
1585     gnutls
1586     jni
1587     ladspa
1588     libass
1589     libbluray
1590     libbs2b
1591     libcaca
1592     libcelt
1593     libdc1394
1594     libdrm
1595     libflite
1596     libfontconfig
1597     libfreetype
1598     libfribidi
1599     libgme
1600     libgsm
1601     libiec61883
1602     libilbc
1603     libjack
1604     libkvazaar
1605     libmodplug
1606     libmp3lame
1607     libmysofa
1608     libopencv
1609     libopenh264
1610     libopenjpeg
1611     libopenmpt
1612     libopus
1613     libpulse
1614     librsvg
1615     librtmp
1616     libshine
1617     libsmbclient
1618     libsnappy
1619     libsoxr
1620     libspeex
1621     libssh
1622     libtesseract
1623     libtheora
1624     libtwolame
1625     libv4l2
1626     libvorbis
1627     libvpx
1628     libwavpack
1629     libwebp
1630     libxml2
1631     libzimg
1632     libzmq
1633     libzvbi
1634     mediacodec
1635     openal
1636     opencl
1637     opengl
1638 "
1639
1640 HWACCEL_AUTODETECT_LIBRARY_LIST="
1641     audiotoolbox
1642     crystalhd
1643     cuda
1644     cuvid
1645     d3d11va
1646     dxva2
1647     nvdec
1648     nvenc
1649     vaapi
1650     vdpau
1651     videotoolbox
1652     v4l2_m2m
1653     xvmc
1654 "
1655
1656 # catchall list of things that require external libs to link
1657 EXTRALIBS_LIST="
1658     cpu_init
1659     cws2fws
1660 "
1661
1662 HWACCEL_LIBRARY_NONFREE_LIST="
1663     cuda_sdk
1664     libnpp
1665 "
1666
1667 HWACCEL_LIBRARY_LIST="
1668     $HWACCEL_LIBRARY_NONFREE_LIST
1669     libmfx
1670     mmal
1671     omx
1672 "
1673
1674 DOCUMENT_LIST="
1675     doc
1676     htmlpages
1677     manpages
1678     podpages
1679     txtpages
1680 "
1681
1682 FEATURE_LIST="
1683     ftrapv
1684     gray
1685     hardcoded_tables
1686     omx_rpi
1687     runtime_cpudetect
1688     safe_bitstream_reader
1689     shared
1690     small
1691     static
1692     swscale_alpha
1693 "
1694
1695 LIBRARY_LIST="
1696     avcodec
1697     avdevice
1698     avfilter
1699     avformat
1700     avresample
1701     avutil
1702     postproc
1703     swresample
1704     swscale
1705 "
1706
1707 LICENSE_LIST="
1708     gpl
1709     nonfree
1710     version3
1711 "
1712
1713 PROGRAM_LIST="
1714     ffplay
1715     ffprobe
1716     ffserver
1717     ffmpeg
1718 "
1719
1720 SUBSYSTEM_LIST="
1721     dct
1722     dwt
1723     error_resilience
1724     faan
1725     fast_unaligned
1726     fft
1727     lsp
1728     lzo
1729     mdct
1730     pixelutils
1731     network
1732     rdft
1733 "
1734
1735 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1736 CONFIG_LIST="
1737     $DOCUMENT_LIST
1738     $EXAMPLE_LIST
1739     $EXTERNAL_LIBRARY_LIST
1740     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1741     $HWACCEL_LIBRARY_LIST
1742     $HWACCEL_AUTODETECT_LIBRARY_LIST
1743     $FEATURE_LIST
1744     $LICENSE_LIST
1745     $LIBRARY_LIST
1746     $PROGRAM_LIST
1747     $SUBSYSTEM_LIST
1748     autodetect
1749     fontconfig
1750     linux_perf
1751     memory_poisoning
1752     neon_clobber_test
1753     ossfuzz
1754     pic
1755     thumb
1756     valgrind_backtrace
1757     xmm_clobber_test
1758     $COMPONENT_LIST
1759 "
1760
1761 THREADS_LIST="
1762     pthreads
1763     os2threads
1764     w32threads
1765 "
1766
1767 ATOMICS_LIST="
1768     atomics_gcc
1769     atomics_suncc
1770     atomics_win32
1771 "
1772
1773 AUTODETECT_LIBS="
1774     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1775     $HWACCEL_AUTODETECT_LIBRARY_LIST
1776     $THREADS_LIST
1777 "
1778
1779 ARCH_LIST="
1780     aarch64
1781     alpha
1782     arm
1783     avr32
1784     avr32_ap
1785     avr32_uc
1786     bfin
1787     ia64
1788     m68k
1789     mips
1790     mips64
1791     parisc
1792     ppc
1793     ppc64
1794     s390
1795     sh4
1796     sparc
1797     sparc64
1798     tilegx
1799     tilepro
1800     tomi
1801     x86
1802     x86_32
1803     x86_64
1804 "
1805
1806 ARCH_EXT_LIST_ARM="
1807     armv5te
1808     armv6
1809     armv6t2
1810     armv8
1811     neon
1812     vfp
1813     vfpv3
1814     setend
1815 "
1816
1817 ARCH_EXT_LIST_MIPS="
1818     mipsfpu
1819     mips32r2
1820     mips32r5
1821     mips64r2
1822     mips32r6
1823     mips64r6
1824     mipsdsp
1825     mipsdspr2
1826     msa
1827 "
1828
1829 ARCH_EXT_LIST_LOONGSON="
1830     loongson2
1831     loongson3
1832     mmi
1833 "
1834
1835 ARCH_EXT_LIST_X86_SIMD="
1836     aesni
1837     amd3dnow
1838     amd3dnowext
1839     avx
1840     avx2
1841     fma3
1842     fma4
1843     mmx
1844     mmxext
1845     sse
1846     sse2
1847     sse3
1848     sse4
1849     sse42
1850     ssse3
1851     xop
1852 "
1853
1854 ARCH_EXT_LIST_PPC="
1855     altivec
1856     dcbzl
1857     ldbrx
1858     power8
1859     ppc4xx
1860     vsx
1861 "
1862
1863 ARCH_EXT_LIST_X86="
1864     $ARCH_EXT_LIST_X86_SIMD
1865     cpunop
1866     i686
1867 "
1868
1869 ARCH_EXT_LIST="
1870     $ARCH_EXT_LIST_ARM
1871     $ARCH_EXT_LIST_PPC
1872     $ARCH_EXT_LIST_X86
1873     $ARCH_EXT_LIST_MIPS
1874     $ARCH_EXT_LIST_LOONGSON
1875 "
1876
1877 ARCH_FEATURES="
1878     aligned_stack
1879     fast_64bit
1880     fast_clz
1881     fast_cmov
1882     local_aligned
1883     simd_align_16
1884     simd_align_32
1885 "
1886
1887 BUILTIN_LIST="
1888     atomic_cas_ptr
1889     machine_rw_barrier
1890     MemoryBarrier
1891     mm_empty
1892     rdtsc
1893     sarestart
1894     sem_timedwait
1895     sync_val_compare_and_swap
1896 "
1897 HAVE_LIST_CMDLINE="
1898     inline_asm
1899     symver
1900     x86asm
1901 "
1902
1903 HAVE_LIST_PUB="
1904     bigendian
1905     fast_unaligned
1906 "
1907
1908 HEADERS_LIST="
1909     arpa_inet_h
1910     asm_types_h
1911     cdio_paranoia_h
1912     cdio_paranoia_paranoia_h
1913     cuda_h
1914     dispatch_dispatch_h
1915     dev_bktr_ioctl_bt848_h
1916     dev_bktr_ioctl_meteor_h
1917     dev_ic_bt8xx_h
1918     dev_video_bktr_ioctl_bt848_h
1919     dev_video_meteor_ioctl_meteor_h
1920     direct_h
1921     dirent_h
1922     dxgidebug_h
1923     dxva_h
1924     ES2_gl_h
1925     gsm_h
1926     io_h
1927     machine_ioctl_bt848_h
1928     machine_ioctl_meteor_h
1929     malloc_h
1930     opencv2_core_core_c_h
1931     OpenGL_gl3_h
1932     poll_h
1933     sys_param_h
1934     sys_resource_h
1935     sys_select_h
1936     sys_soundcard_h
1937     sys_time_h
1938     sys_un_h
1939     sys_videoio_h
1940     termios_h
1941     udplite_h
1942     unistd_h
1943     valgrind_valgrind_h
1944     windows_h
1945     winsock2_h
1946 "
1947
1948 INTRINSICS_LIST="
1949     intrinsics_neon
1950 "
1951
1952 COMPLEX_FUNCS="
1953     cabs
1954     cexp
1955 "
1956
1957 MATH_FUNCS="
1958     atanf
1959     atan2f
1960     cbrt
1961     cbrtf
1962     copysign
1963     cosf
1964     erf
1965     exp2
1966     exp2f
1967     expf
1968     hypot
1969     isfinite
1970     isinf
1971     isnan
1972     ldexpf
1973     llrint
1974     llrintf
1975     log2
1976     log2f
1977     log10f
1978     lrint
1979     lrintf
1980     powf
1981     rint
1982     round
1983     roundf
1984     sinf
1985     trunc
1986     truncf
1987 "
1988
1989 SYSTEM_FEATURES="
1990     atomics_native
1991     dos_paths
1992     libc_msvcrt
1993     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1994     section_data_rel_ro
1995     threads
1996     uwp
1997     winrt
1998 "
1999
2000 SYSTEM_FUNCS="
2001     access
2002     aligned_malloc
2003     arc4random
2004     clock_gettime
2005     closesocket
2006     CommandLineToArgvW
2007     fcntl
2008     getaddrinfo
2009     gethrtime
2010     getopt
2011     GetProcessAffinityMask
2012     GetProcessMemoryInfo
2013     GetProcessTimes
2014     getrusage
2015     GetSystemTimeAsFileTime
2016     gettimeofday
2017     glob
2018     glXGetProcAddress
2019     gmtime_r
2020     inet_aton
2021     isatty
2022     kbhit
2023     localtime_r
2024     lstat
2025     lzo1x_999_compress
2026     mach_absolute_time
2027     MapViewOfFile
2028     memalign
2029     mkstemp
2030     mmap
2031     mprotect
2032     nanosleep
2033     PeekNamedPipe
2034     posix_memalign
2035     pthread_cancel
2036     sched_getaffinity
2037     SecItemImport
2038     SetConsoleTextAttribute
2039     SetConsoleCtrlHandler
2040     setmode
2041     setrlimit
2042     Sleep
2043     strerror_r
2044     sysconf
2045     sysctl
2046     usleep
2047     UTGetOSTypeFromString
2048     VirtualAlloc
2049     wglGetProcAddress
2050 "
2051
2052 SYSTEM_LIBRARIES="
2053     vaapi_drm
2054     vaapi_x11
2055     vdpau_x11
2056     wincrypt
2057 "
2058
2059 TOOLCHAIN_FEATURES="
2060     as_arch_directive
2061     as_fpu_directive
2062     as_func
2063     as_object_arch
2064     asm_mod_q
2065     blocks_extension
2066     ebp_available
2067     ebx_available
2068     gnu_as
2069     gnu_windres
2070     ibm_asm
2071     inline_asm_direct_symbol_refs
2072     inline_asm_labels
2073     inline_asm_nonlocal_labels
2074     pragma_deprecated
2075     rsync_contimeout
2076     symver_asm_label
2077     symver_gnu_asm
2078     vfp_args
2079     xform_asm
2080     xmm_clobbers
2081 "
2082
2083 TYPES_LIST="
2084     CONDITION_VARIABLE_Ptr
2085     kCMVideoCodecType_HEVC
2086     socklen_t
2087     struct_addrinfo
2088     struct_group_source_req
2089     struct_ip_mreq_source
2090     struct_ipv6_mreq
2091     struct_msghdr_msg_flags
2092     struct_pollfd
2093     struct_rusage_ru_maxrss
2094     struct_sctp_event_subscribe
2095     struct_sockaddr_in6
2096     struct_sockaddr_sa_len
2097     struct_sockaddr_storage
2098     struct_stat_st_mtim_tv_nsec
2099     struct_v4l2_frmivalenum_discrete
2100 "
2101
2102 HAVE_LIST="
2103     $ARCH_EXT_LIST
2104     $(add_suffix _external $ARCH_EXT_LIST)
2105     $(add_suffix _inline   $ARCH_EXT_LIST)
2106     $ARCH_FEATURES
2107     $ATOMICS_LIST
2108     $BUILTIN_LIST
2109     $COMPLEX_FUNCS
2110     $HAVE_LIST_CMDLINE
2111     $HAVE_LIST_PUB
2112     $HEADERS_LIST
2113     $INTRINSICS_LIST
2114     $MATH_FUNCS
2115     $SYSTEM_FEATURES
2116     $SYSTEM_FUNCS
2117     $SYSTEM_LIBRARIES
2118     $THREADS_LIST
2119     $TOOLCHAIN_FEATURES
2120     $TYPES_LIST
2121     makeinfo
2122     makeinfo_html
2123     perl
2124     pod2man
2125     texi2html
2126 "
2127
2128 # options emitted with CONFIG_ prefix but not available on the command line
2129 CONFIG_EXTRA="
2130     aandcttables
2131     ac3dsp
2132     adts_header
2133     audio_frame_queue
2134     audiodsp
2135     blockdsp
2136     bswapdsp
2137     cabac
2138     cbs
2139     cbs_h264
2140     cbs_h265
2141     cbs_mpeg2
2142     dirac_parse
2143     dvprofile
2144     exif
2145     faandct
2146     faanidct
2147     fdctdsp
2148     flacdsp
2149     fmtconvert
2150     frame_thread_encoder
2151     g722dsp
2152     golomb
2153     gplv3
2154     h263dsp
2155     h264chroma
2156     h264dsp
2157     h264parse
2158     h264pred
2159     h264qpel
2160     hevcparse
2161     hpeldsp
2162     huffman
2163     huffyuvdsp
2164     huffyuvencdsp
2165     idctdsp
2166     iirfilter
2167     mdct15
2168     intrax8
2169     iso_media
2170     ividsp
2171     jpegtables
2172     lgplv3
2173     libx262
2174     llauddsp
2175     llviddsp
2176     llvidencdsp
2177     lpc
2178     lzf
2179     me_cmp
2180     mpeg_er
2181     mpegaudio
2182     mpegaudiodsp
2183     mpegaudioheader
2184     mpegvideo
2185     mpegvideoenc
2186     mss34dsp
2187     pixblockdsp
2188     qpeldsp
2189     qsv
2190     qsvdec
2191     qsvenc
2192     qsvvpp
2193     rangecoder
2194     riffdec
2195     riffenc
2196     rtpdec
2197     rtpenc_chain
2198     rv34dsp
2199     sinewin
2200     snappy
2201     srtp
2202     startcode
2203     texturedsp
2204     texturedspenc
2205     tpeldsp
2206     vaapi_1
2207     vaapi_encode
2208     vc1dsp
2209     videodsp
2210     vp3dsp
2211     vp56dsp
2212     vp8dsp
2213     wma_freqs
2214     wmv2dsp
2215 "
2216
2217 CMDLINE_SELECT="
2218     $ARCH_EXT_LIST
2219     $CONFIG_LIST
2220     $HAVE_LIST_CMDLINE
2221     $THREADS_LIST
2222     asm
2223     cross_compile
2224     debug
2225     extra_warnings
2226     logging
2227     lto
2228     optimizations
2229     rpath
2230     stripping
2231 "
2232
2233 PATHS_LIST="
2234     bindir
2235     datadir
2236     docdir
2237     incdir
2238     libdir
2239     mandir
2240     pkgconfigdir
2241     prefix
2242     shlibdir
2243     install_name_dir
2244 "
2245
2246 CMDLINE_SET="
2247     $PATHS_LIST
2248     ar
2249     arch
2250     as
2251     assert_level
2252     build_suffix
2253     cc
2254     objcc
2255     cpu
2256     cross_prefix
2257     custom_allocator
2258     cxx
2259     dep_cc
2260     doxygen
2261     env
2262     extra_version
2263     gas
2264     host_cc
2265     host_cflags
2266     host_extralibs
2267     host_ld
2268     host_ldflags
2269     host_os
2270     ignore_tests
2271     install
2272     ld
2273     ln_s
2274     logfile
2275     malloc_prefix
2276     nm
2277     optflags
2278     nvccflags
2279     pkg_config
2280     pkg_config_flags
2281     progs_suffix
2282     random_seed
2283     ranlib
2284     samples
2285     strip
2286     sws_max_filter_size
2287     sysinclude
2288     sysroot
2289     target_exec
2290     target_os
2291     target_path
2292     target_samples
2293     tempprefix
2294     toolchain
2295     valgrind
2296     x86asmexe
2297 "
2298
2299 CMDLINE_APPEND="
2300     extra_cflags
2301     extra_cxxflags
2302     extra_objcflags
2303     host_cppflags
2304 "
2305
2306 # code dependency declarations
2307
2308 # architecture extensions
2309
2310 armv5te_deps="arm"
2311 armv6_deps="arm"
2312 armv6t2_deps="arm"
2313 armv8_deps="aarch64"
2314 neon_deps_any="aarch64 arm"
2315 intrinsics_neon_deps="neon"
2316 vfp_deps_any="aarch64 arm"
2317 vfpv3_deps="vfp"
2318 setend_deps="arm"
2319
2320 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2321
2322 altivec_deps="ppc"
2323 dcbzl_deps="ppc"
2324 ldbrx_deps="ppc"
2325 ppc4xx_deps="ppc"
2326 vsx_deps="altivec"
2327 power8_deps="vsx"
2328
2329 loongson2_deps="mips"
2330 loongson3_deps="mips"
2331 mips32r2_deps="mips"
2332 mips32r5_deps="mips"
2333 mips32r6_deps="mips"
2334 mips64r2_deps="mips"
2335 mips64r6_deps="mips"
2336 mipsfpu_deps="mips"
2337 mipsdsp_deps="mips"
2338 mipsdspr2_deps="mips"
2339 mmi_deps="mips"
2340 msa_deps="mipsfpu"
2341
2342 cpunop_deps="i686"
2343 x86_64_select="i686"
2344 x86_64_suggest="fast_cmov"
2345
2346 amd3dnow_deps="mmx"
2347 amd3dnowext_deps="amd3dnow"
2348 i686_deps="x86"
2349 mmx_deps="x86"
2350 mmxext_deps="mmx"
2351 sse_deps="mmxext"
2352 sse2_deps="sse"
2353 sse3_deps="sse2"
2354 ssse3_deps="sse3"
2355 sse4_deps="ssse3"
2356 sse42_deps="sse4"
2357 aesni_deps="sse42"
2358 avx_deps="sse42"
2359 xop_deps="avx"
2360 fma3_deps="avx"
2361 fma4_deps="avx"
2362 avx2_deps="avx"
2363
2364 mmx_external_deps="x86asm"
2365 mmx_inline_deps="inline_asm x86"
2366 mmx_suggest="mmx_external mmx_inline"
2367
2368 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2369     eval dep=\$${ext}_deps
2370     eval ${ext}_external_deps='"${dep}_external"'
2371     eval ${ext}_inline_deps='"${dep}_inline"'
2372     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2373 done
2374
2375 aligned_stack_if_any="aarch64 ppc x86"
2376 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2377 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2378 fast_unaligned_if_any="aarch64 ppc x86"
2379 simd_align_16_if_any="altivec neon sse"
2380 simd_align_32_if_any="avx"
2381
2382 # system capabilities
2383 symver_if_any="symver_asm_label symver_gnu_asm"
2384 valgrind_backtrace_conflict="optimizations"
2385 valgrind_backtrace_deps="valgrind_valgrind_h"
2386
2387 # threading support
2388 atomics_gcc_if="sync_val_compare_and_swap"
2389 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2390 atomics_win32_if="MemoryBarrier"
2391 atomics_native_if_any="$ATOMICS_LIST"
2392 w32threads_deps="atomics_native"
2393 threads_if_any="$THREADS_LIST"
2394
2395 # subsystems
2396 cbs_h264_select="cbs golomb"
2397 cbs_h265_select="cbs golomb"
2398 cbs_mpeg2_select="cbs"
2399 dct_select="rdft"
2400 dirac_parse_select="golomb"
2401 error_resilience_select="me_cmp"
2402 faandct_deps="faan"
2403 faandct_select="fdctdsp"
2404 faanidct_deps="faan"
2405 faanidct_select="idctdsp"
2406 h264dsp_select="startcode"
2407 hevcparse_select="golomb"
2408 frame_thread_encoder_deps="encoders threads"
2409 intrax8_select="blockdsp idctdsp"
2410 mdct_select="fft"
2411 mdct15_select="fft"
2412 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2413 mpeg_er_select="error_resilience"
2414 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2415 mpegaudiodsp_select="dct"
2416 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2417 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2418 vc1dsp_select="h264chroma qpeldsp startcode"
2419 rdft_select="fft"
2420
2421 # decoders / encoders
2422 aac_decoder_select="adts_header mdct15 mdct sinewin"
2423 aac_fixed_decoder_select="mdct sinewin"
2424 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2425 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2426 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2427 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2428 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2429 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2430 adpcm_g722_decoder_select="g722dsp"
2431 adpcm_g722_encoder_select="g722dsp"
2432 aic_decoder_select="golomb idctdsp"
2433 alac_encoder_select="lpc"
2434 als_decoder_select="bswapdsp"
2435 amrnb_decoder_select="lsp"
2436 amrwb_decoder_select="lsp"
2437 amv_decoder_select="sp5x_decoder exif"
2438 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2439 ape_decoder_select="bswapdsp llauddsp"
2440 apng_decoder_deps="zlib"
2441 apng_encoder_deps="zlib"
2442 apng_encoder_select="llvidencdsp"
2443 aptx_decoder_select="audio_frame_queue"
2444 aptx_encoder_select="audio_frame_queue"
2445 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2446 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2447 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2448 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2449 atrac1_decoder_select="mdct sinewin"
2450 atrac3_decoder_select="mdct"
2451 atrac3p_decoder_select="mdct sinewin"
2452 avrn_decoder_select="exif jpegtables"
2453 bink_decoder_select="blockdsp hpeldsp"
2454 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2455 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2456 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2457 clearvideo_decoder_select="idctdsp"
2458 cllc_decoder_select="bswapdsp"
2459 comfortnoise_encoder_select="lpc"
2460 cook_decoder_select="audiodsp mdct sinewin"
2461 cscd_decoder_select="lzo"
2462 cscd_decoder_suggest="zlib"
2463 dca_decoder_select="mdct"
2464 dds_decoder_select="texturedsp"
2465 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2466 dnxhd_decoder_select="blockdsp idctdsp"
2467 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2468 dolby_e_decoder_select="mdct"
2469 dvvideo_decoder_select="dvprofile idctdsp"
2470 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2471 dxa_decoder_deps="zlib"
2472 dxv_decoder_select="lzf texturedsp"
2473 eac3_decoder_select="ac3_decoder"
2474 eac3_encoder_select="ac3_encoder"
2475 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2476 eatgq_decoder_select="aandcttables"
2477 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2478 exr_decoder_deps="zlib"
2479 ffv1_decoder_select="rangecoder"
2480 ffv1_encoder_select="rangecoder"
2481 ffvhuff_decoder_select="huffyuv_decoder"
2482 ffvhuff_encoder_select="huffyuv_encoder"
2483 fic_decoder_select="golomb"
2484 flac_decoder_select="flacdsp"
2485 flac_encoder_select="bswapdsp flacdsp lpc"
2486 flashsv2_decoder_deps="zlib"
2487 flashsv2_encoder_deps="zlib"
2488 flashsv_decoder_deps="zlib"
2489 flashsv_encoder_deps="zlib"
2490 flv_decoder_select="h263_decoder"
2491 flv_encoder_select="h263_encoder"
2492 fourxm_decoder_select="blockdsp bswapdsp"
2493 fraps_decoder_select="bswapdsp huffman"
2494 g2m_decoder_deps="zlib"
2495 g2m_decoder_select="blockdsp idctdsp jpegtables"
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_deps="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_deps="zlib"
2570 png_encoder_deps="zlib"
2571 png_encoder_select="llvidencdsp"
2572 prores_decoder_select="blockdsp idctdsp"
2573 prores_encoder_select="fdctdsp"
2574 qcelp_decoder_select="lsp"
2575 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2576 ra_144_decoder_select="audiodsp"
2577 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2578 ralf_decoder_select="golomb"
2579 rawvideo_decoder_select="bswapdsp"
2580 rscc_decoder_deps="zlib"
2581 rtjpeg_decoder_select="me_cmp"
2582 rv10_decoder_select="h263_decoder"
2583 rv10_encoder_select="h263_encoder"
2584 rv20_decoder_select="h263_decoder"
2585 rv20_encoder_select="h263_encoder"
2586 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2587 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2588 screenpresso_decoder_deps="zlib"
2589 shorten_decoder_select="bswapdsp"
2590 sipr_decoder_select="lsp"
2591 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2592 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2593 sonic_decoder_select="golomb rangecoder"
2594 sonic_encoder_select="golomb rangecoder"
2595 sonic_ls_encoder_select="golomb rangecoder"
2596 sp5x_decoder_select="mjpeg_decoder"
2597 srgc_decoder_deps="zlib"
2598 svq1_decoder_select="hpeldsp"
2599 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2600 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2601 svq3_decoder_suggest="zlib"
2602 tak_decoder_select="audiodsp"
2603 tdsc_decoder_deps="zlib"
2604 tdsc_decoder_select="mjpeg_decoder"
2605 theora_decoder_select="vp3_decoder"
2606 thp_decoder_select="mjpeg_decoder"
2607 tiff_decoder_suggest="zlib lzma"
2608 tiff_encoder_suggest="zlib"
2609 truehd_decoder_select="mlp_parser"
2610 truehd_encoder_select="lpc"
2611 truemotion2_decoder_select="bswapdsp"
2612 truespeech_decoder_select="bswapdsp"
2613 tscc_decoder_deps="zlib"
2614 twinvq_decoder_select="mdct lsp sinewin"
2615 txd_decoder_select="texturedsp"
2616 utvideo_decoder_select="bswapdsp llviddsp"
2617 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2618 vble_decoder_select="llviddsp"
2619 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2620 vc1image_decoder_select="vc1_decoder"
2621 vorbis_decoder_select="mdct"
2622 vorbis_encoder_select="mdct"
2623 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2624 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2625 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2626 vp6a_decoder_select="vp6_decoder"
2627 vp6f_decoder_select="vp6_decoder"
2628 vp7_decoder_select="h264pred videodsp vp8dsp"
2629 vp8_decoder_select="h264pred videodsp vp8dsp"
2630 vp9_decoder_select="videodsp vp9_parser"
2631 webp_decoder_select="vp8_decoder exif"
2632 wmalossless_decoder_select="llauddsp"
2633 wmapro_decoder_select="mdct sinewin wma_freqs"
2634 wmav1_decoder_select="mdct sinewin wma_freqs"
2635 wmav1_encoder_select="mdct sinewin wma_freqs"
2636 wmav2_decoder_select="mdct sinewin wma_freqs"
2637 wmav2_encoder_select="mdct sinewin wma_freqs"
2638 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2639 wmv1_decoder_select="h263_decoder"
2640 wmv1_encoder_select="h263_encoder"
2641 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2642 wmv2_encoder_select="h263_encoder wmv2dsp"
2643 wmv3_decoder_select="vc1_decoder"
2644 wmv3image_decoder_select="wmv3_decoder"
2645 xma1_decoder_select="wmapro_decoder"
2646 xma2_decoder_select="wmapro_decoder"
2647 zerocodec_decoder_deps="zlib"
2648 zlib_decoder_deps="zlib"
2649 zlib_encoder_deps="zlib"
2650 zmbv_decoder_deps="zlib"
2651 zmbv_encoder_deps="zlib"
2652
2653 # hardware accelerators
2654 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2655 cuda_deps_any="libdl LoadLibrary"
2656 cuvid_deps="cuda"
2657 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2658 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2659 nvdec_deps="cuda"
2660 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2661 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2662 xvmc_deps="X11_extensions_XvMClib_h"
2663
2664 h263_vaapi_hwaccel_deps="vaapi"
2665 h263_vaapi_hwaccel_select="h263_decoder"
2666 h263_videotoolbox_hwaccel_deps="videotoolbox"
2667 h263_videotoolbox_hwaccel_select="h263_decoder"
2668 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2669 h264_d3d11va_hwaccel_deps="d3d11va"
2670 h264_d3d11va_hwaccel_select="h264_decoder"
2671 h264_d3d11va2_hwaccel_deps="d3d11va"
2672 h264_d3d11va2_hwaccel_select="h264_decoder"
2673 h264_dxva2_hwaccel_deps="dxva2"
2674 h264_dxva2_hwaccel_select="h264_decoder"
2675 h264_mediacodec_hwaccel_deps="mediacodec"
2676 h264_mmal_hwaccel_deps="mmal"
2677 h264_nvdec_hwaccel_deps="nvdec"
2678 h264_nvdec_hwaccel_select="h264_decoder"
2679 h264_qsv_hwaccel_deps="libmfx"
2680 h264_vaapi_hwaccel_deps="vaapi"
2681 h264_vaapi_hwaccel_select="h264_decoder"
2682 h264_vdpau_hwaccel_deps="vdpau"
2683 h264_vdpau_hwaccel_select="h264_decoder"
2684 h264_videotoolbox_hwaccel_deps="videotoolbox"
2685 h264_videotoolbox_hwaccel_select="h264_decoder"
2686 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2687 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2688 hevc_d3d11va_hwaccel_select="hevc_decoder"
2689 hevc_mediacodec_hwaccel_deps="mediacodec"
2690 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2691 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2692 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2693 hevc_dxva2_hwaccel_select="hevc_decoder"
2694 hevc_nvdec_hwaccel_deps="nvdec"
2695 hevc_nvdec_hwaccel_select="hevc_decoder"
2696 hevc_qsv_hwaccel_deps="libmfx"
2697 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2698 hevc_vaapi_hwaccel_select="hevc_decoder"
2699 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2700 hevc_vdpau_hwaccel_select="hevc_decoder"
2701 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2702 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2703 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2704 mpeg_xvmc_hwaccel_deps="xvmc"
2705 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2706 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2707 mpeg1_vdpau_hwaccel_deps="vdpau"
2708 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2709 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2710 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2711 mpeg1_xvmc_hwaccel_deps="xvmc"
2712 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2713 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2714 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2715 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2716 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2717 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2718 mpeg2_dxva2_hwaccel_deps="dxva2"
2719 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2720 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2721 mpeg2_mmal_hwaccel_deps="mmal"
2722 mpeg2_nvdec_hwaccel_deps="nvdec"
2723 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2724 mpeg2_qsv_hwaccel_deps="libmfx"
2725 mpeg2_vaapi_hwaccel_deps="vaapi"
2726 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_vdpau_hwaccel_deps="vdpau"
2728 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2730 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2731 mpeg2_xvmc_hwaccel_deps="xvmc"
2732 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2733 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2734 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2735 mpeg4_mmal_hwaccel_deps="mmal"
2736 mpeg4_vaapi_hwaccel_deps="vaapi"
2737 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2738 mpeg4_vdpau_hwaccel_deps="vdpau"
2739 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2740 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2741 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2742 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2743 vc1_d3d11va_hwaccel_deps="d3d11va"
2744 vc1_d3d11va_hwaccel_select="vc1_decoder"
2745 vc1_d3d11va2_hwaccel_deps="d3d11va"
2746 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2747 vc1_dxva2_hwaccel_deps="dxva2"
2748 vc1_dxva2_hwaccel_select="vc1_decoder"
2749 vc1_mmal_hwaccel_deps="mmal"
2750 vc1_nvdec_hwaccel_deps="nvdec"
2751 vc1_nvdec_hwaccel_select="vc1_decoder"
2752 vc1_qsv_hwaccel_deps="libmfx"
2753 vc1_vaapi_hwaccel_deps="vaapi"
2754 vc1_vaapi_hwaccel_select="vc1_decoder"
2755 vc1_vdpau_hwaccel_deps="vdpau"
2756 vc1_vdpau_hwaccel_select="vc1_decoder"
2757 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2758 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2759 vp8_mediacodec_hwaccel_deps="mediacodec"
2760 vp8_qsv_hwaccel_deps="libmfx"
2761 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2762 vp9_d3d11va_hwaccel_select="vp9_decoder"
2763 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2764 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2765 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2766 vp9_dxva2_hwaccel_select="vp9_decoder"
2767 vp9_mediacodec_hwaccel_deps="mediacodec"
2768 vp9_nvdec_hwaccel_deps="nvdec"
2769 vp9_nvdec_hwaccel_select="vp9_decoder"
2770 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2771 vp9_vaapi_hwaccel_select="vp9_decoder"
2772 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2773 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2774 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2775 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2776 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2777 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2778
2779 # hardware-accelerated codecs
2780 omx_deps="libdl pthreads"
2781 omx_rpi_select="omx"
2782 qsv_deps="libmfx"
2783 qsvdec_select="qsv"
2784 qsvenc_select="qsv"
2785 qsvvpp_select="qsv"
2786 vaapi_encode_deps="vaapi"
2787 v4l2_m2m_deps_any="linux_videodev2_h"
2788
2789 hwupload_cuda_filter_deps="cuda"
2790 scale_npp_filter_deps="cuda libnpp"
2791 scale_cuda_filter_deps="cuda_sdk"
2792 thumbnail_cuda_filter_deps="cuda_sdk"
2793
2794 nvenc_deps="cuda"
2795 nvenc_deps_any="libdl LoadLibrary"
2796 nvenc_encoder_deps="nvenc"
2797
2798 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2799 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2800 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2801 h264_cuvid_decoder_deps="cuvid"
2802 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2803 h264_mediacodec_decoder_deps="mediacodec"
2804 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2805 h264_mmal_decoder_deps="mmal"
2806 h264_nvenc_encoder_deps="nvenc"
2807 h264_omx_encoder_deps="omx"
2808 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2809 h264_qsv_encoder_select="qsvenc"
2810 h264_rkmpp_decoder_deps="rkmpp"
2811 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2812 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2813 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2814 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2815 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2816 hevc_cuvid_decoder_deps="cuvid"
2817 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2818 hevc_mediacodec_decoder_deps="mediacodec"
2819 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2820 hevc_nvenc_encoder_deps="nvenc"
2821 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2822 hevc_qsv_encoder_select="hevcparse qsvenc"
2823 hevc_rkmpp_decoder_deps="rkmpp"
2824 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2825 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2826 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2827 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2828 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2829 mjpeg_cuvid_decoder_deps="cuvid"
2830 mjpeg_qsv_encoder_deps="libmfx"
2831 mjpeg_qsv_encoder_select="qsvenc"
2832 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2833 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2834 mpeg1_cuvid_decoder_deps="cuvid"
2835 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2836 mpeg2_crystalhd_decoder_select="crystalhd"
2837 mpeg2_cuvid_decoder_deps="cuvid"
2838 mpeg2_mmal_decoder_deps="mmal"
2839 mpeg2_mediacodec_decoder_deps="mediacodec"
2840 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2841 mpeg2_qsv_encoder_select="qsvenc"
2842 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2843 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2844 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2845 mpeg4_crystalhd_decoder_select="crystalhd"
2846 mpeg4_cuvid_decoder_deps="cuvid"
2847 mpeg4_mediacodec_decoder_deps="mediacodec"
2848 mpeg4_mmal_decoder_deps="mmal"
2849 mpeg4_omx_encoder_deps="omx"
2850 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2851 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2852 msmpeg4_crystalhd_decoder_select="crystalhd"
2853 nvenc_h264_encoder_select="h264_nvenc_encoder"
2854 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2855 vc1_crystalhd_decoder_select="crystalhd"
2856 vc1_cuvid_decoder_deps="cuvid"
2857 vc1_mmal_decoder_deps="mmal"
2858 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2859 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2860 vp8_cuvid_decoder_deps="cuvid"
2861 vp8_mediacodec_decoder_deps="mediacodec"
2862 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2863 vp8_rkmpp_decoder_deps="rkmpp"
2864 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2865 vp8_vaapi_encoder_select="vaapi_encode"
2866 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2867 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2868 vp9_cuvid_decoder_deps="cuvid"
2869 vp9_mediacodec_decoder_deps="mediacodec"
2870 vp9_rkmpp_decoder_deps="rkmpp"
2871 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2872 vp9_vaapi_encoder_select="vaapi_encode"
2873 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2874 wmv3_crystalhd_decoder_select="crystalhd"
2875
2876 # parsers
2877 aac_parser_select="adts_header"
2878 h264_parser_select="golomb h264dsp h264parse"
2879 hevc_parser_select="hevcparse"
2880 mpegaudio_parser_select="mpegaudioheader"
2881 mpegvideo_parser_select="mpegvideo"
2882 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2883 vc1_parser_select="vc1dsp"
2884
2885 # bitstream_filters
2886 aac_adtstoasc_bsf_select="adts_header"
2887 h264_metadata_bsf_select="cbs_h264"
2888 h264_redundant_pps_bsf_select="cbs_h264"
2889 hevc_metadata_bsf_select="cbs_h265"
2890 mjpeg2jpeg_bsf_select="jpegtables"
2891 mpeg2_metadata_bsf_select="cbs_mpeg2"
2892 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2893
2894 # external libraries
2895 aac_at_decoder_deps="audiotoolbox"
2896 ac3_at_decoder_deps="audiotoolbox"
2897 ac3_at_decoder_select="ac3_parser"
2898 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2899 alac_at_decoder_deps="audiotoolbox"
2900 amr_nb_at_decoder_deps="audiotoolbox"
2901 avisynth_deps_any="libdl LoadLibrary"
2902 avisynth_demuxer_deps="avisynth"
2903 avisynth_demuxer_select="riffdec"
2904 eac3_at_decoder_deps="audiotoolbox"
2905 eac3_at_decoder_select="ac3_parser"
2906 gsm_ms_at_decoder_deps="audiotoolbox"
2907 ilbc_at_decoder_deps="audiotoolbox"
2908 mp1_at_decoder_deps="audiotoolbox"
2909 mp2_at_decoder_deps="audiotoolbox"
2910 mp3_at_decoder_deps="audiotoolbox"
2911 mp1_at_decoder_select="mpegaudioheader"
2912 mp2_at_decoder_select="mpegaudioheader"
2913 mp3_at_decoder_select="mpegaudioheader"
2914 pcm_alaw_at_decoder_deps="audiotoolbox"
2915 pcm_mulaw_at_decoder_deps="audiotoolbox"
2916 qdmc_at_decoder_deps="audiotoolbox"
2917 qdm2_at_decoder_deps="audiotoolbox"
2918 aac_at_encoder_deps="audiotoolbox"
2919 aac_at_encoder_select="audio_frame_queue"
2920 alac_at_encoder_deps="audiotoolbox"
2921 alac_at_encoder_select="audio_frame_queue"
2922 ilbc_at_encoder_deps="audiotoolbox"
2923 ilbc_at_encoder_select="audio_frame_queue"
2924 pcm_alaw_at_encoder_deps="audiotoolbox"
2925 pcm_alaw_at_encoder_select="audio_frame_queue"
2926 pcm_mulaw_at_encoder_deps="audiotoolbox"
2927 pcm_mulaw_at_encoder_select="audio_frame_queue"
2928 chromaprint_muxer_deps="chromaprint"
2929 h264_videotoolbox_encoder_deps="pthreads"
2930 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2931 hevc_videotoolbox_encoder_deps="pthreads"
2932 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2933 libcelt_decoder_deps="libcelt"
2934 libfdk_aac_decoder_deps="libfdk_aac"
2935 libfdk_aac_encoder_deps="libfdk_aac"
2936 libfdk_aac_encoder_select="audio_frame_queue"
2937 libgme_demuxer_deps="libgme"
2938 libgsm_decoder_deps="libgsm"
2939 libgsm_encoder_deps="libgsm"
2940 libgsm_ms_decoder_deps="libgsm"
2941 libgsm_ms_encoder_deps="libgsm"
2942 libilbc_decoder_deps="libilbc"
2943 libilbc_encoder_deps="libilbc"
2944 libkvazaar_encoder_deps="libkvazaar"
2945 libmodplug_demuxer_deps="libmodplug"
2946 libmp3lame_encoder_deps="libmp3lame"
2947 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2948 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2949 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2950 libopencore_amrnb_encoder_select="audio_frame_queue"
2951 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2952 libopenh264_decoder_deps="libopenh264"
2953 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2954 libopenh264_encoder_deps="libopenh264"
2955 libopenjpeg_decoder_deps="libopenjpeg"
2956 libopenjpeg_encoder_deps="libopenjpeg"
2957 libopenmpt_demuxer_deps="libopenmpt"
2958 libopus_decoder_deps="libopus"
2959 libopus_encoder_deps="libopus"
2960 libopus_encoder_select="audio_frame_queue"
2961 librsvg_decoder_deps="librsvg"
2962 libshine_encoder_deps="libshine"
2963 libshine_encoder_select="audio_frame_queue"
2964 libspeex_decoder_deps="libspeex"
2965 libspeex_encoder_deps="libspeex"
2966 libspeex_encoder_select="audio_frame_queue"
2967 libtheora_encoder_deps="libtheora"
2968 libtwolame_encoder_deps="libtwolame"
2969 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2970 libvorbis_decoder_deps="libvorbis"
2971 libvorbis_encoder_deps="libvorbis libvorbisenc"
2972 libvorbis_encoder_select="audio_frame_queue"
2973 libvpx_vp8_decoder_deps="libvpx"
2974 libvpx_vp8_encoder_deps="libvpx"
2975 libvpx_vp9_decoder_deps="libvpx"
2976 libvpx_vp9_encoder_deps="libvpx"
2977 libwavpack_encoder_deps="libwavpack"
2978 libwavpack_encoder_select="audio_frame_queue"
2979 libwebp_encoder_deps="libwebp"
2980 libwebp_anim_encoder_deps="libwebp"
2981 libx262_encoder_deps="libx262"
2982 libx264_encoder_deps="libx264"
2983 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2984 libx264rgb_encoder_select="libx264_encoder"
2985 libx265_encoder_deps="libx265"
2986 libxavs_encoder_deps="libxavs"
2987 libxvid_encoder_deps="libxvid"
2988 libzvbi_teletext_decoder_deps="libzvbi"
2989 videotoolbox_suggest="coreservices"
2990 videotoolbox_deps="corefoundation coremedia corevideo"
2991 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2992
2993 # demuxers / muxers
2994 ac3_demuxer_select="ac3_parser"
2995 aiff_muxer_select="iso_media"
2996 asf_demuxer_select="riffdec"
2997 asf_o_demuxer_select="riffdec"
2998 asf_muxer_select="riffenc"
2999 asf_stream_muxer_select="asf_muxer"
3000 avi_demuxer_select="iso_media riffdec exif"
3001 avi_muxer_select="riffenc"
3002 caf_demuxer_select="iso_media riffdec"
3003 caf_muxer_select="iso_media"
3004 dash_muxer_select="mp4_muxer"
3005 dash_demuxer_deps="libxml2"
3006 dirac_demuxer_select="dirac_parser"
3007 dts_demuxer_select="dca_parser"
3008 dtshd_demuxer_select="dca_parser"
3009 dv_demuxer_select="dvprofile"
3010 dv_muxer_select="dvprofile"
3011 dxa_demuxer_select="riffdec"
3012 eac3_demuxer_select="ac3_parser"
3013 f4v_muxer_select="mov_muxer"
3014 fifo_muxer_deps="threads"
3015 flac_demuxer_select="flac_parser"
3016 hds_muxer_select="flv_muxer"
3017 hls_muxer_select="mpegts_muxer"
3018 hls_muxer_suggest="gcrypt openssl"
3019 image2_alias_pix_demuxer_select="image2_demuxer"
3020 image2_brender_pix_demuxer_select="image2_demuxer"
3021 ipod_muxer_select="mov_muxer"
3022 ismv_muxer_select="mov_muxer"
3023 matroska_audio_muxer_select="matroska_muxer"
3024 matroska_demuxer_select="iso_media riffdec"
3025 matroska_demuxer_suggest="bzlib lzo zlib"
3026 matroska_muxer_select="iso_media riffenc"
3027 mmf_muxer_select="riffenc"
3028 mov_demuxer_select="iso_media riffdec"
3029 mov_demuxer_suggest="zlib"
3030 mov_muxer_select="iso_media riffenc rtpenc_chain"
3031 mp3_demuxer_select="mpegaudio_parser"
3032 mp3_muxer_select="mpegaudioheader"
3033 mp4_muxer_select="mov_muxer"
3034 mpegts_demuxer_select="iso_media"
3035 mpegts_muxer_select="adts_muxer latm_muxer"
3036 mpegtsraw_demuxer_select="mpegts_demuxer"
3037 mxf_d10_muxer_select="mxf_muxer"
3038 mxf_opatom_muxer_select="mxf_muxer"
3039 nut_muxer_select="riffenc"
3040 nuv_demuxer_select="riffdec"
3041 oga_muxer_select="ogg_muxer"
3042 ogg_demuxer_select="dirac_parse"
3043 ogv_muxer_select="ogg_muxer"
3044 opus_muxer_select="ogg_muxer"
3045 psp_muxer_select="mov_muxer"
3046 rtp_demuxer_select="sdp_demuxer"
3047 rtp_muxer_select="golomb"
3048 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3049 rtsp_demuxer_select="http_protocol rtpdec"
3050 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3051 sap_demuxer_select="sdp_demuxer"
3052 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3053 sdp_demuxer_select="rtpdec"
3054 smoothstreaming_muxer_select="ismv_muxer"
3055 spdif_demuxer_select="adts_header"
3056 spdif_muxer_select="adts_header"
3057 spx_muxer_select="ogg_muxer"
3058 swf_demuxer_suggest="zlib"
3059 tak_demuxer_select="tak_parser"
3060 tg2_muxer_select="mov_muxer"
3061 tgp_muxer_select="mov_muxer"
3062 vobsub_demuxer_select="mpegps_demuxer"
3063 w64_demuxer_select="wav_demuxer"
3064 w64_muxer_select="wav_muxer"
3065 wav_demuxer_select="riffdec"
3066 wav_muxer_select="riffenc"
3067 webm_muxer_select="iso_media riffenc"
3068 webm_dash_manifest_demuxer_select="matroska_demuxer"
3069 wtv_demuxer_select="mpegts_demuxer riffdec"
3070 wtv_muxer_select="mpegts_muxer riffenc"
3071 xmv_demuxer_select="riffdec"
3072 xwma_demuxer_select="riffdec"
3073
3074 # indevs / outdevs
3075 alsa_indev_deps="alsa"
3076 alsa_outdev_deps="alsa"
3077 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3078 avfoundation_indev_suggest="coregraphics applicationservices"
3079 avfoundation_indev_extralibs="-framework Foundation"
3080 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3081 caca_outdev_deps="libcaca"
3082 decklink_deps_any="libdl LoadLibrary"
3083 decklink_indev_deps="decklink threads"
3084 decklink_indev_extralibs="-lstdc++"
3085 decklink_outdev_deps="decklink threads"
3086 decklink_outdev_extralibs="-lstdc++"
3087 libndi_newtek_indev_deps="libndi_newtek"
3088 libndi_newtek_indev_extralibs="-lndi"
3089 libndi_newtek_outdev_deps="libndi_newtek"
3090 libndi_newtek_outdev_extralibs="-lndi"
3091 dshow_indev_deps="IBaseFilter"
3092 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3093 fbdev_indev_deps="linux_fb_h"
3094 fbdev_outdev_deps="linux_fb_h"
3095 gdigrab_indev_deps="CreateDIBSection"
3096 gdigrab_indev_extralibs="-lgdi32"
3097 gdigrab_indev_select="bmp_decoder"
3098 iec61883_indev_deps="libiec61883"
3099 jack_indev_deps="libjack"
3100 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3101 kmsgrab_indev_deps="libdrm"
3102 lavfi_indev_deps="avfilter"
3103 libcdio_indev_deps="libcdio"
3104 libdc1394_indev_deps="libdc1394"
3105 openal_indev_deps="openal"
3106 opengl_outdev_deps="opengl"
3107 oss_indev_deps_any="sys_soundcard_h"
3108 oss_outdev_deps_any="sys_soundcard_h"
3109 pulse_indev_deps="libpulse"
3110 pulse_outdev_deps="libpulse"
3111 sdl2_outdev_deps="sdl2"
3112 sndio_indev_deps="sndio"
3113 sndio_outdev_deps="sndio"
3114 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3115 v4l2_indev_suggest="libv4l2"
3116 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3117 v4l2_outdev_suggest="libv4l2"
3118 vfwcap_indev_deps="vfw32 vfwcap_defines"
3119 xcbgrab_indev_deps="libxcb"
3120 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3121 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3122 xv_outdev_extralibs="-lXv -lX11 -lXext"
3123
3124 # protocols
3125 async_protocol_deps="threads"
3126 bluray_protocol_deps="libbluray"
3127 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3128 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3129 ffrtmpcrypt_protocol_select="tcp_protocol"
3130 ffrtmphttp_protocol_conflict="librtmp_protocol"
3131 ffrtmphttp_protocol_select="http_protocol"
3132 ftp_protocol_select="tcp_protocol"
3133 gopher_protocol_select="network"
3134 http_protocol_select="tcp_protocol"
3135 http_protocol_suggest="zlib"
3136 httpproxy_protocol_select="tcp_protocol"
3137 httpproxy_protocol_suggest="zlib"
3138 https_protocol_select="tls_protocol"
3139 https_protocol_suggest="zlib"
3140 icecast_protocol_select="http_protocol"
3141 librtmp_protocol_deps="librtmp"
3142 librtmpe_protocol_deps="librtmp"
3143 librtmps_protocol_deps="librtmp"
3144 librtmpt_protocol_deps="librtmp"
3145 librtmpte_protocol_deps="librtmp"
3146 libsmbclient_protocol_deps="libsmbclient gplv3"
3147 libssh_protocol_deps="libssh"
3148 mmsh_protocol_select="http_protocol"
3149 mmst_protocol_select="network"
3150 rtmp_protocol_conflict="librtmp_protocol"
3151 rtmp_protocol_select="tcp_protocol"
3152 rtmp_protocol_suggest="zlib"
3153 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3154 rtmpe_protocol_suggest="zlib"
3155 rtmps_protocol_conflict="librtmp_protocol"
3156 rtmps_protocol_select="tls_protocol"
3157 rtmps_protocol_suggest="zlib"
3158 rtmpt_protocol_select="ffrtmphttp_protocol"
3159 rtmpt_protocol_suggest="zlib"
3160 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3161 rtmpte_protocol_suggest="zlib"
3162 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3163 rtmpts_protocol_suggest="zlib"
3164 rtp_protocol_select="udp_protocol"
3165 schannel_conflict="openssl gnutls"
3166 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3167 sctp_protocol_select="network"
3168 securetransport_conflict="openssl gnutls"
3169 srtp_protocol_select="rtp_protocol srtp"
3170 tcp_protocol_select="network"
3171 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3172 tls_protocol_select="tcp_protocol"
3173 udp_protocol_select="network"
3174 udplite_protocol_select="network"
3175 unix_protocol_deps="sys_un_h"
3176 unix_protocol_select="network"
3177
3178 # filters
3179 afftfilt_filter_deps="avcodec"
3180 afftfilt_filter_select="fft"
3181 afir_filter_deps="avcodec"
3182 afir_filter_select="fft"
3183 amovie_filter_deps="avcodec avformat"
3184 aresample_filter_deps="swresample"
3185 ass_filter_deps="libass"
3186 atempo_filter_deps="avcodec"
3187 atempo_filter_select="rdft"
3188 azmq_filter_deps="libzmq"
3189 blackframe_filter_deps="gpl"
3190 boxblur_filter_deps="gpl"
3191 bs2b_filter_deps="libbs2b"
3192 colormatrix_filter_deps="gpl"
3193 coreimage_filter_deps="coreimage appkit"
3194 coreimage_filter_extralibs="-framework OpenGL"
3195 coreimagesrc_filter_deps="coreimage appkit"
3196 coreimagesrc_filter_extralibs="-framework OpenGL"
3197 cover_rect_filter_deps="avcodec avformat gpl"
3198 cropdetect_filter_deps="gpl"
3199 deinterlace_qsv_filter_deps="libmfx"
3200 deinterlace_vaapi_filter_deps="vaapi"
3201 delogo_filter_deps="gpl"
3202 deshake_filter_select="pixelutils"
3203 deshake_filter_suggest="opencl"
3204 drawtext_filter_deps="libfreetype"
3205 drawtext_filter_suggest="libfontconfig libfribidi"
3206 elbg_filter_deps="avcodec"
3207 eq_filter_deps="gpl"
3208 fftfilt_filter_deps="avcodec"
3209 fftfilt_filter_select="rdft"
3210 find_rect_filter_deps="avcodec avformat gpl"
3211 firequalizer_filter_deps="avcodec"
3212 firequalizer_filter_select="rdft"
3213 flite_filter_deps="libflite"
3214 framerate_filter_select="pixelutils"
3215 frei0r_filter_deps="frei0r libdl"
3216 frei0r_src_filter_deps="frei0r libdl"
3217 fspp_filter_deps="gpl"
3218 geq_filter_deps="gpl"
3219 histeq_filter_deps="gpl"
3220 hqdn3d_filter_deps="gpl"
3221 interlace_filter_deps="gpl"
3222 kerndeint_filter_deps="gpl"
3223 ladspa_filter_deps="ladspa libdl"
3224 mcdeint_filter_deps="avcodec gpl"
3225 movie_filter_deps="avcodec avformat"
3226 mpdecimate_filter_deps="gpl"
3227 mpdecimate_filter_select="pixelutils"
3228 mptestsrc_filter_deps="gpl"
3229 negate_filter_deps="lut_filter"
3230 nnedi_filter_deps="gpl"
3231 ocr_filter_deps="libtesseract"
3232 ocv_filter_deps="libopencv"
3233 overlay_qsv_filter_deps="libmfx"
3234 overlay_qsv_filter_select="qsvvpp"
3235 owdenoise_filter_deps="gpl"
3236 pan_filter_deps="swresample"
3237 perspective_filter_deps="gpl"
3238 phase_filter_deps="gpl"
3239 pp7_filter_deps="gpl"
3240 pp_filter_deps="gpl postproc"
3241 pullup_filter_deps="gpl"
3242 removelogo_filter_deps="avcodec avformat swscale"
3243 repeatfields_filter_deps="gpl"
3244 resample_filter_deps="avresample"
3245 rubberband_filter_deps="librubberband"
3246 sab_filter_deps="gpl swscale"
3247 scale2ref_filter_deps="swscale"
3248 scale_filter_deps="swscale"
3249 scale_qsv_filter_deps="libmfx"
3250 select_filter_select="pixelutils"
3251 showcqt_filter_deps="avcodec avformat swscale"
3252 showcqt_filter_suggest="libfontconfig libfreetype"
3253 showcqt_filter_select="fft"
3254 showfreqs_filter_deps="avcodec"
3255 showfreqs_filter_select="fft"
3256 showspectrum_filter_deps="avcodec"
3257 showspectrum_filter_select="fft"
3258 showspectrumpic_filter_deps="avcodec"
3259 showspectrumpic_filter_select="fft"
3260 signature_filter_deps="gpl avcodec avformat"
3261 smartblur_filter_deps="gpl swscale"
3262 sofalizer_filter_deps="libmysofa avcodec"
3263 sofalizer_filter_select="fft"
3264 spectrumsynth_filter_deps="avcodec"
3265 spectrumsynth_filter_select="fft"
3266 spp_filter_deps="gpl avcodec"
3267 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3268 stereo3d_filter_deps="gpl"
3269 subtitles_filter_deps="avformat avcodec libass"
3270 super2xsai_filter_deps="gpl"
3271 pixfmts_super2xsai_test_deps="super2xsai_filter"
3272 tinterlace_filter_deps="gpl"
3273 tinterlace_merge_test_deps="tinterlace_filter"
3274 tinterlace_pad_test_deps="tinterlace_filter"
3275 tonemap_filter_deps="const_nan"
3276 uspp_filter_deps="gpl avcodec"
3277 unsharp_filter_suggest="opencl"
3278 vaguedenoiser_filter_deps="gpl"
3279 vidstabdetect_filter_deps="libvidstab"
3280 vidstabtransform_filter_deps="libvidstab"
3281 libvmaf_filter_deps="libvmaf"
3282 zmq_filter_deps="libzmq"
3283 zoompan_filter_deps="swscale"
3284 zscale_filter_deps="libzimg const_nan"
3285 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3286 vpp_qsv_filter_deps="libmfx"
3287 vpp_qsv_filter_select="qsvvpp"
3288
3289 # examples
3290 avio_dir_cmd_deps="avformat avutil"
3291 avio_reading_deps="avformat avcodec avutil"
3292 decode_audio_example_deps="avcodec avutil"
3293 decode_video_example_deps="avcodec avutil"
3294 demuxing_decoding_example_deps="avcodec avformat avutil"
3295 encode_audio_example_deps="avcodec avutil"
3296 encode_video_example_deps="avcodec avutil"
3297 extract_mvs_example_deps="avcodec avformat avutil"
3298 filter_audio_example_deps="avfilter avutil"
3299 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3300 filtering_video_example_deps="avfilter avcodec avformat avutil"
3301 http_multiclient_example_deps="avformat avutil fork"
3302 hw_decode_example_deps="avcodec avformat avutil"
3303 metadata_example_deps="avformat avutil"
3304 muxing_example_deps="avcodec avformat avutil swscale"
3305 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3306 remuxing_example_deps="avcodec avformat avutil"
3307 resampling_audio_example_deps="avutil swresample"
3308 scaling_video_example_deps="avutil swscale"
3309 transcode_aac_example_deps="avcodec avformat swresample"
3310 transcoding_example_deps="avfilter avcodec avformat avutil"
3311
3312 # EXTRALIBS_LIST
3313 cpu_init_extralibs="pthreads_extralibs"
3314 cws2fws_extralibs="zlib_extralibs"
3315
3316 # libraries, in linking order
3317 avcodec_deps="avutil"
3318 avcodec_suggest="libm"
3319 avcodec_select="null_bsf"
3320 avdevice_deps="avformat avcodec avutil"
3321 avdevice_suggest="libm"
3322 avfilter_deps="avutil"
3323 avfilter_suggest="libm"
3324 avformat_deps="avcodec avutil"
3325 avformat_suggest="libm network zlib"
3326 avresample_deps="avutil"
3327 avresample_suggest="libm"
3328 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3329 postproc_deps="avutil gpl"
3330 postproc_suggest="libm"
3331 swresample_deps="avutil"
3332 swresample_suggest="libm libsoxr"
3333 swscale_deps="avutil"
3334 swscale_suggest="libm"
3335
3336 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3337 avfilter_extralibs="pthreads_extralibs"
3338 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3339
3340 # programs
3341 ffmpeg_deps="avcodec avfilter avformat swresample"
3342 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3343                null_filter
3344                trim_filter"
3345 ffmpeg_suggest="ole32 psapi shell32"
3346 ffplay_deps="avcodec avformat swscale swresample sdl2"
3347 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3348 ffplay_suggest="shell32"
3349 ffprobe_deps="avcodec avformat"
3350 ffprobe_suggest="shell32"
3351 ffserver_deps="avformat fork sarestart"
3352 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3353
3354 # documentation
3355 podpages_deps="perl"
3356 manpages_deps="perl pod2man"
3357 htmlpages_deps="perl"
3358 htmlpages_deps_any="makeinfo_html texi2html"
3359 txtpages_deps="perl makeinfo"
3360 doc_deps_any="manpages htmlpages podpages txtpages"
3361
3362 # default parameters
3363
3364 logfile="ffbuild/config.log"
3365
3366 # installation paths
3367 prefix_default="/usr/local"
3368 bindir_default='${prefix}/bin'
3369 datadir_default='${prefix}/share/ffmpeg'
3370 docdir_default='${prefix}/share/doc/ffmpeg'
3371 incdir_default='${prefix}/include'
3372 libdir_default='${prefix}/lib'
3373 mandir_default='${prefix}/share/man'
3374
3375 # toolchain
3376 ar_default="ar"
3377 cc_default="gcc"
3378 cxx_default="g++"
3379 host_cc_default="gcc"
3380 doxygen_default="doxygen"
3381 install="install"
3382 ln_s_default="ln -s -f"
3383 nm_default="nm -g"
3384 pkg_config_default=pkg-config
3385 ranlib_default="ranlib"
3386 strip_default="strip"
3387 version_script='--version-script'
3388 objformat="elf32"
3389 x86asmexe_default="nasm"
3390 windres_default="windres"
3391 nvcc_default="nvcc"
3392 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3393 striptype="direct"
3394
3395 # OS
3396 target_os_default=$(tolower $(uname -s))
3397 host_os=$target_os_default
3398
3399 # machine
3400 if test "$target_os_default" = aix; then
3401     arch_default=$(uname -p)
3402     strip_default="strip -X32_64"
3403 else
3404     arch_default=$(uname -m)
3405 fi
3406 cpu="generic"
3407 intrinsics="none"
3408
3409 # configurable options
3410 enable $PROGRAM_LIST
3411 enable $DOCUMENT_LIST
3412 enable $EXAMPLE_LIST
3413 enable $(filter_out avresample $LIBRARY_LIST)
3414 enable stripping
3415
3416 enable asm
3417 enable debug
3418 enable doc
3419 enable faan faandct faanidct
3420 enable optimizations
3421 enable runtime_cpudetect
3422 enable safe_bitstream_reader
3423 enable static
3424 enable swscale_alpha
3425 enable valgrind_backtrace
3426
3427 sws_max_filter_size_default=256
3428 set_default sws_max_filter_size
3429
3430 # internal components are enabled by default
3431 enable $EXTRALIBS_LIST
3432
3433 # Avoid external, non-system, libraries getting enabled by dependency resolution
3434 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3435
3436 # build settings
3437 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3438 LIBPREF="lib"
3439 LIBSUF=".a"
3440 FULLNAME='$(NAME)$(BUILDSUF)'
3441 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3442 SLIBPREF="lib"
3443 SLIBSUF=".so"
3444 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3445 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3446 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3447 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3448 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3449 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3450 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3451
3452 asflags_filter=echo
3453 cflags_filter=echo
3454 ldflags_filter=echo
3455
3456 AS_C='-c'
3457 AS_O='-o $@'
3458 CC_C='-c'
3459 CC_E='-E -o $@'
3460 CC_O='-o $@'
3461 CXX_C='-c'
3462 CXX_O='-o $@'
3463 OBJCC_C='-c'
3464 OBJCC_E='-E -o $@'
3465 OBJCC_O='-o $@'
3466 X86ASM_O='-o $@'
3467 LD_O='-o $@'
3468 LD_LIB='-l%'
3469 LD_PATH='-L'
3470 HOSTCC_C='-c'
3471 HOSTCC_E='-E -o $@'
3472 HOSTCC_O='-o $@'
3473 HOSTLD_O='-o $@'
3474 NVCC_C='-c'
3475 NVCC_O='-o $@'
3476
3477 host_extralibs='-lm'
3478 host_cflags_filter=echo
3479 host_ldflags_filter=echo
3480
3481 target_path='$(CURDIR)'
3482
3483 # since the object filename is not given with the -MM flag, the compiler
3484 # is only able to print the basename, and we must add the path ourselves
3485 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3486 DEPFLAGS='-MM'
3487
3488 mkdir -p ffbuild
3489
3490 # find source path
3491 if test -f configure; then
3492     source_path=.
3493 else
3494     source_path=$(cd $(dirname "$0"); pwd)
3495     case "$source_path" in
3496         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3497     esac
3498     test -e "$source_path/config.h" &&
3499         die "Out of tree builds are impossible with config.h in source dir."
3500 fi
3501
3502 for v in "$@"; do
3503     r=${v#*=}
3504     l=${v%"$r"}
3505     r=$(sh_quote "$r")
3506     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3507 done
3508
3509 find_things(){
3510     thing=$1
3511     pattern=$2
3512     file=$source_path/$3
3513     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3514 }
3515
3516 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3517 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3518 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3519 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3520 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3521 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3522 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3523 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3524 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3525
3526 find_things_extern(){
3527     thing=$1
3528     pattern=$2
3529     file=$source_path/$3
3530     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3531 }
3532
3533 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3534 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3535
3536 AVCODEC_COMPONENTS_LIST="
3537     $BSF_LIST
3538     $DECODER_LIST
3539     $ENCODER_LIST
3540     $HWACCEL_LIST
3541     $PARSER_LIST
3542 "
3543
3544 AVDEVICE_COMPONENTS_LIST="
3545     $INDEV_LIST
3546     $OUTDEV_LIST
3547 "
3548
3549 AVFILTER_COMPONENTS_LIST="
3550     $FILTER_LIST
3551 "
3552
3553 AVFORMAT_COMPONENTS_LIST="
3554     $DEMUXER_LIST
3555     $MUXER_LIST
3556     $PROTOCOL_LIST
3557 "
3558
3559 ALL_COMPONENTS="
3560     $AVCODEC_COMPONENTS_LIST
3561     $AVDEVICE_COMPONENTS_LIST
3562     $AVFILTER_COMPONENTS_LIST
3563     $AVFORMAT_COMPONENTS_LIST
3564 "
3565
3566 for n in $COMPONENT_LIST; do
3567     v=$(toupper ${n%s})_LIST
3568     eval enable \$$v
3569     eval ${n}_if_any="\$$v"
3570 done
3571
3572 enable $ARCH_EXT_LIST
3573
3574 die_unknown(){
3575     echo "Unknown option \"$1\"."
3576     echo "See $0 --help for available options."
3577     exit 1
3578 }
3579
3580 print_in_columns() {
3581     cols=$(expr $ncols / 24)
3582     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3583 }
3584
3585 show_list() {
3586     suffix=_$1
3587     shift
3588     echo $* | sed s/$suffix//g | print_in_columns
3589     exit 0
3590 }
3591
3592 rand_list(){
3593     IFS=', '
3594     set -- $*
3595     unset IFS
3596     for thing; do
3597         comp=${thing%:*}
3598         prob=${thing#$comp}
3599         prob=${prob#:}
3600         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3601         echo "prob ${prob:-0.5}"
3602         printf '%s\n' $comp
3603     done
3604 }
3605
3606 do_random(){
3607     action=$1
3608     shift
3609     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3610     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3611 }
3612
3613 for opt do
3614     optval="${opt#*=}"
3615     case "$opt" in
3616         --extra-ldflags=*)
3617             add_ldflags $optval
3618         ;;
3619         --extra-ldexeflags=*)
3620             add_ldexeflags $optval
3621         ;;
3622         --extra-ldsoflags=*)
3623             add_ldsoflags $optval
3624         ;;
3625         --extra-ldlibflags=*)
3626             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3627                  "removed in the future. Use --extra-ldsoflags instead."
3628             add_ldsoflags $optval
3629         ;;
3630         --extra-libs=*)
3631             add_extralibs $optval
3632         ;;
3633         --disable-devices)
3634             disable $INDEV_LIST $OUTDEV_LIST
3635         ;;
3636         --enable-debug=*)
3637             debuglevel="$optval"
3638         ;;
3639         --disable-programs)
3640             disable $PROGRAM_LIST
3641         ;;
3642         --disable-everything)
3643             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3644         ;;
3645         --disable-all)
3646             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3647             disable $LIBRARY_LIST $PROGRAM_LIST doc
3648             enable avutil
3649         ;;
3650         --enable-random|--disable-random)
3651             action=${opt%%-random}
3652             do_random ${action#--} $COMPONENT_LIST
3653         ;;
3654         --enable-random=*|--disable-random=*)
3655             action=${opt%%-random=*}
3656             do_random ${action#--} $optval
3657         ;;
3658         --enable-sdl)
3659             enable sdl2
3660         ;;
3661         --enable-*=*|--disable-*=*)
3662             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3663             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3664             eval list=\$$(toupper $thing)_LIST
3665             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3666             list=$(filter "$name" $list)
3667             [ "$list" = "" ] && warn "Option $opt did not match anything"
3668             $action $list
3669         ;;
3670         --enable-yasm|--disable-yasm)
3671             warn "The ${opt} option is only provided for compatibility and will be\n"\
3672                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3673             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3674         ;;
3675         --yasmexe=*)
3676             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3677                  "removed in the future. Use --x86asmexe instead."
3678             x86asmexe="$optval"
3679         ;;
3680         --enable-?*|--disable-?*)
3681             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3682             if is_in $option $COMPONENT_LIST; then
3683                 test $action = disable && action=unset
3684                 eval $action \$$(toupper ${option%s})_LIST
3685             elif is_in $option $CMDLINE_SELECT; then
3686                 $action $option
3687             else
3688                 die_unknown $opt
3689             fi
3690         ;;
3691         --list-*)
3692             NAME="${opt#--list-}"
3693             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3694             NAME=${NAME%s}
3695             eval show_list $NAME \$$(toupper $NAME)_LIST
3696         ;;
3697         --help|-h) show_help
3698         ;;
3699         --quiet|-q) quiet=yes
3700         ;;
3701         --fatal-warnings) enable fatal_warnings
3702         ;;
3703         --libfuzzer=*)
3704             libfuzzer_path="$optval"
3705         ;;
3706         *)
3707             optname="${opt%%=*}"
3708             optname="${optname#--}"
3709             optname=$(echo "$optname" | sed 's/-/_/g')
3710             if is_in $optname $CMDLINE_SET; then
3711                 eval $optname='$optval'
3712             elif is_in $optname $CMDLINE_APPEND; then
3713                 append $optname "$optval"
3714             else
3715                 die_unknown $opt
3716             fi
3717         ;;
3718     esac
3719 done
3720
3721 for e in $env; do
3722     eval "export $e"
3723 done
3724
3725 if disabled autodetect; then
3726
3727     # Unless iconv is explicitely disabled by the user, we still want to probe
3728     # for the iconv from the libc.
3729     disabled iconv || enable libc_iconv
3730
3731     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3732     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3733 fi
3734 # Mark specifically enabled, but normally autodetected libraries as requested.
3735 for lib in $AUTODETECT_LIBS; do
3736     enabled $lib && request $lib
3737 done
3738 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3739 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3740 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3741
3742 disabled logging && logfile=/dev/null
3743
3744 # command line configuration sanity checks
3745
3746 # we need to build at least one lib type
3747 if ! enabled_any static shared; then
3748     cat <<EOF
3749 At least one library type must be built.
3750 Specify --enable-static to build the static libraries or --enable-shared to
3751 build the shared libraries as well. To only build the shared libraries specify
3752 --disable-static in addition to --enable-shared.
3753 EOF
3754     exit 1
3755 fi
3756
3757 die_license_disabled() {
3758     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3759 }
3760
3761 die_license_disabled_gpl() {
3762     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3763 }
3764
3765 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3766 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3767
3768 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3769 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3770
3771 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3772
3773 enabled_all gnutls openssl &&
3774     die "GnuTLS and OpenSSL must not be enabled at the same time."
3775
3776 # Disable all the library-specific components if the library itself
3777 # is disabled, see AVCODEC_LIST and following _LIST variables.
3778
3779 disable_components(){
3780     disabled ${1} && disable $(
3781         eval components="\$$(toupper ${1})_COMPONENTS"
3782         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3783     )
3784 }
3785
3786 map 'disable_components $v' $LIBRARY_LIST
3787
3788 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3789 set >> $logfile
3790
3791 test -n "$valgrind" && toolchain="valgrind-memcheck"
3792
3793 enabled ossfuzz && {
3794     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3795     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3796 }
3797
3798 case "$toolchain" in
3799     *-asan)
3800         cc_default="${toolchain%-asan}"
3801         add_cflags  -fsanitize=address
3802         add_ldflags -fsanitize=address
3803     ;;
3804     *-msan)
3805         cc_default="${toolchain%-msan}"
3806         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3807         add_ldflags -fsanitize=memory
3808     ;;
3809     *-tsan)
3810         cc_default="${toolchain%-tsan}"
3811         add_cflags  -fsanitize=thread -fPIE
3812         add_ldflags -fsanitize=thread -pie
3813         case "$toolchain" in
3814             gcc-tsan)
3815                 add_cflags  -fPIC
3816                 add_ldflags -fPIC
3817                 ;;
3818         esac
3819     ;;
3820     *-usan)
3821         cc_default="${toolchain%-usan}"
3822         add_cflags  -fsanitize=undefined
3823         add_ldflags -fsanitize=undefined
3824     ;;
3825     valgrind-*)
3826         target_exec_default="valgrind"
3827         case "$toolchain" in
3828             valgrind-massif)
3829                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3830                 ;;
3831             valgrind-memcheck)
3832                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3833                 ;;
3834         esac
3835     ;;
3836     msvc)
3837         # Check whether the current MSVC version needs the C99 converter.
3838         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3839         # support enough of C99 to build ffmpeg. Default to the new
3840         # behaviour if the regexp was unable to match anything, since this
3841         # successfully parses the version number of existing supported
3842         # versions that require the converter (MSVC 2010 and 2012).
3843         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3844         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3845             cc_default="cl"
3846             cxx_default="cl"
3847         else
3848             cc_default="c99wrap cl"
3849             cxx_default="c99wrap cl"
3850         fi
3851         ld_default="$source_path/compat/windows/mslink"
3852         nm_default="dumpbin -symbols"
3853         ar_default="lib"
3854         case "$arch" in
3855         aarch64|arm64)
3856             as_default="armasm64"
3857             ;;
3858         arm*)
3859             as_default="armasm"
3860             ;;
3861         esac
3862         target_os_default="win32"
3863         # Use a relative path for TMPDIR. This makes sure all the
3864         # ffconf temp files are written with a relative path, avoiding
3865         # issues with msys/win32 path conversion for MSVC parameters
3866         # such as -Fo<file> or -out:<file>.
3867         TMPDIR=.
3868     ;;
3869     icl)
3870         cc_default="icl"
3871         ld_default="xilink"
3872         nm_default="dumpbin -symbols"
3873         ar_default="xilib"
3874         target_os_default="win32"
3875         TMPDIR=.
3876     ;;
3877     gcov)
3878         add_cflags  -fprofile-arcs -ftest-coverage
3879         add_ldflags -fprofile-arcs -ftest-coverage
3880     ;;
3881     llvm-cov)
3882         add_cflags -fprofile-arcs -ftest-coverage
3883         add_ldflags --coverage
3884     ;;
3885     hardened)
3886         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3887         add_cflags   -fno-strict-overflow -fstack-protector-all
3888         add_ldflags  -Wl,-z,relro -Wl,-z,now
3889         add_cflags   -fPIE
3890         add_ldexeflags -fPIE -pie
3891     ;;
3892     ?*)
3893         die "Unknown toolchain $toolchain"
3894     ;;
3895 esac
3896
3897 if test -n "$cross_prefix"; then
3898     test -n "$arch" && test -n "$target_os" ||
3899         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3900     enable cross_compile
3901 fi
3902
3903 ar_default="${cross_prefix}${ar_default}"
3904 cc_default="${cross_prefix}${cc_default}"
3905 cxx_default="${cross_prefix}${cxx_default}"
3906 nm_default="${cross_prefix}${nm_default}"
3907 pkg_config_default="${cross_prefix}${pkg_config_default}"
3908 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3909     ranlib_default="${cross_prefix}${ranlib_default} -D"
3910 else
3911     ranlib_default="${cross_prefix}${ranlib_default}"
3912 fi
3913 strip_default="${cross_prefix}${strip_default}"
3914 windres_default="${cross_prefix}${windres_default}"
3915
3916 sysinclude_default="${sysroot}/usr/include"
3917
3918 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3919     target_exec target_os x86asmexe nvcc
3920 enabled cross_compile || host_cc_default=$cc
3921 set_default host_cc
3922
3923 pkg_config_fail_message=""
3924 if ! $pkg_config --version >/dev/null 2>&1; then
3925     warn "$pkg_config not found, library detection may fail."
3926     pkg_config=false
3927 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3928     pkg_config_fail_message="
3929 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3930 fi
3931
3932 if test $doxygen != $doxygen_default && \
3933   ! $doxygen --version >/dev/null 2>&1; then
3934     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3935 fi
3936
3937 exesuf() {
3938     case $1 in
3939         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3940     esac
3941 }
3942
3943 EXESUF=$(exesuf $target_os)
3944 HOSTEXESUF=$(exesuf $host_os)
3945
3946 # set temporary file name
3947 : ${TMPDIR:=$TEMPDIR}
3948 : ${TMPDIR:=$TMP}
3949 : ${TMPDIR:=/tmp}
3950
3951 if [ -n "$tempprefix" ] ; then
3952     mktemp(){
3953         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3954         echo "$tmpname"
3955         mkdir "$tmpname"
3956     }
3957 elif ! check_cmd mktemp -u XXXXXX; then
3958     # simple replacement for missing mktemp
3959     # NOT SAFE FOR GENERAL USE
3960     mktemp(){
3961         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3962         echo "$tmpname"
3963         mkdir "$tmpname"
3964     }
3965 fi
3966
3967 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3968     die "Unable to create temporary directory in $TMPDIR."
3969
3970 tmpfile(){
3971     tmp="${FFTMPDIR}/test"$2
3972     (set -C; exec > $tmp) 2> /dev/null ||
3973         die "Unable to create temporary file in $FFTMPDIR."
3974     eval $1=$tmp
3975 }
3976
3977 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3978 trap 'exit 2' INT
3979
3980 tmpfile TMPASM .asm
3981 tmpfile TMPC   .c
3982 tmpfile TMPCPP .cpp
3983 tmpfile TMPE   $EXESUF
3984 tmpfile TMPH   .h
3985 tmpfile TMPM   .m
3986 tmpfile TMPO   .o
3987 tmpfile TMPS   .S
3988 tmpfile TMPSH  .sh
3989 tmpfile TMPV   .ver
3990
3991 unset -f mktemp
3992
3993 chmod +x $TMPE
3994
3995 # make sure we can execute files in $TMPDIR
3996 cat > $TMPSH 2>> $logfile <<EOF
3997 #! /bin/sh
3998 EOF
3999 chmod +x $TMPSH >> $logfile 2>&1
4000 if ! $TMPSH >> $logfile 2>&1; then
4001     cat <<EOF
4002 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4003 variable to another directory and make sure that it is not mounted noexec.
4004 EOF
4005     die "Sanity test failed."
4006 fi
4007
4008 armasm_flags(){
4009     for flag; do
4010         case $flag in
4011             # Filter out MSVC cl.exe options from cflags that shouldn't
4012             # be passed to gas-preprocessor
4013             -M[TD]*)                                            ;;
4014             *)                  echo $flag                      ;;
4015         esac
4016    done
4017 }
4018
4019 cparser_flags(){
4020     for flag; do
4021         case $flag in
4022             -Wno-switch)             echo -Wno-switch-enum ;;
4023             -Wno-format-zero-length) ;;
4024             -Wdisabled-optimization) ;;
4025             -Wno-pointer-sign)       echo -Wno-other ;;
4026             *)                       echo $flag ;;
4027         esac
4028     done
4029 }
4030
4031 msvc_common_flags(){
4032     for flag; do
4033         case $flag in
4034             # In addition to specifying certain flags under the compiler
4035             # specific filters, they must be specified here as well or else the
4036             # generic catch all at the bottom will print the original flag.
4037             -Wall)                ;;
4038             -Wextra)              ;;
4039             -std=c99)             ;;
4040             # Common flags
4041             -fomit-frame-pointer) ;;
4042             -g)                   echo -Z7 ;;
4043             -fno-math-errno)      ;;
4044             -fno-common)          ;;
4045             -fno-signed-zeros)    ;;
4046             -fPIC)                ;;
4047             -mthumb)              ;;
4048             -march=*)             ;;
4049             -lz)                  echo zlib.lib ;;
4050             -lx264)               echo libx264.lib ;;
4051             -lstdc++)             ;;
4052             -l*)                  echo ${flag#-l}.lib ;;
4053             -LARGEADDRESSAWARE)   echo $flag ;;
4054             -L*)                  echo -libpath:${flag#-L} ;;
4055             *)                    echo $flag ;;
4056         esac
4057     done
4058 }
4059
4060 msvc_flags(){
4061     msvc_common_flags "$@"
4062     for flag; do
4063         case $flag in
4064             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4065                                        -wd4554 ;;
4066             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4067                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4068                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4069                                        -wd4307 \
4070                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4071         esac
4072     done
4073 }
4074
4075 icl_flags(){
4076     msvc_common_flags "$@"
4077     for flag; do
4078         case $flag in
4079             # Despite what Intel's documentation says -Wall, which is supported
4080             # on Windows, does enable remarks so disable them here.
4081             -Wall)                echo $flag -Qdiag-disable:remark ;;
4082             -std=c99)             echo -Qstd=c99 ;;
4083             -flto)                echo -ipo ;;
4084         esac
4085     done
4086 }
4087
4088 icc_flags(){
4089     for flag; do
4090         case $flag in
4091             -flto)                echo -ipo ;;
4092             *)                    echo $flag ;;
4093         esac
4094     done
4095 }
4096
4097 suncc_flags(){
4098     for flag; do
4099         case $flag in
4100             -march=*|-mcpu=*)
4101                 case "${flag#*=}" in
4102                     native)                   echo -xtarget=native       ;;
4103                     v9|niagara)               echo -xarch=sparc          ;;
4104                     ultrasparc)               echo -xarch=sparcvis       ;;
4105                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4106                     i586|pentium)             echo -xchip=pentium        ;;
4107                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4108                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4109                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4110                     pentium4*)          echo -xtarget=pentium4           ;;
4111                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4112                     *-sse3)             echo -xarch=sse3                 ;;
4113                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4114                     bonnell)                   echo -xarch=ssse3         ;;
4115                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4116                     westmere)                  echo -xtarget=westmere    ;;
4117                     silvermont)                echo -xarch=sse4_2        ;;
4118                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4119                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4120                                                echo -xarch=avx           ;;
4121                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4122                     btver1)                    echo -xarch=amdsse4a      ;;
4123                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4124                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4125                     k8|opteron|athlon64|athlon-fx)
4126                                                echo -xarch=sse2a         ;;
4127                     athlon*)                   echo -xarch=pentium_proa  ;;
4128                 esac
4129                 ;;
4130             -std=c99)             echo -xc99              ;;
4131             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4132             -fPIC)                echo -KPIC -xcode=pic32 ;;
4133             -W*,*)                echo $flag              ;;
4134             -f*-*|-W*|-mimpure-text)                      ;;
4135             -shared)              echo -G                 ;;
4136             *)                    echo $flag              ;;
4137         esac
4138     done
4139 }
4140
4141 probe_cc(){
4142     pfx=$1
4143     _cc=$2
4144     first=$3
4145
4146     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4147     unset _ld_o _ldflags _ld_lib _ld_path
4148     unset _depflags _DEPCMD _DEPFLAGS
4149     _flags_filter=echo
4150
4151     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4152         true # no-op to avoid reading stdin in following checks
4153     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4154         _type=llvm_gcc
4155         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4156         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4157         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4158         _cflags_speed='-O3'
4159         _cflags_size='-Os'
4160     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4161         _type=gcc
4162         gcc_version=$($_cc --version | head -n1)
4163         gcc_basever=$($_cc -dumpversion)
4164         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4165         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4166         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4167         case $gcc_basever in
4168             2) ;;
4169             2.*) ;;
4170             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4171         esac
4172         if [ "$first" = true ]; then
4173             case $gcc_basever in
4174                 4.2*)
4175                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4176             esac
4177         fi
4178         _cflags_speed='-O3'
4179         _cflags_size='-Os'
4180     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4181         _type=icc
4182         _ident=$($_cc --version | head -n1)
4183         _depflags='-MMD'
4184         _cflags_speed='-O3'
4185         _cflags_size='-Os'
4186         _cflags_noopt='-O1'
4187         _flags_filter=icc_flags
4188     elif $_cc -v 2>&1 | grep -q xlc; then
4189         _type=xlc
4190         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4191         _cflags_speed='-O5'
4192         _cflags_size='-O5 -qcompact'
4193     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4194         test -d "$sysroot" || die "No valid sysroot specified."
4195         _type=armcc
4196         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4197         armcc_conf="$PWD/armcc.conf"
4198         $_cc --arm_linux_configure                 \
4199              --arm_linux_config_file="$armcc_conf" \
4200              --configure_sysroot="$sysroot"        \
4201              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4202              die "Error creating armcc configuration file."
4203         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4204         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4205         as_default="${cross_prefix}gcc"
4206         _depflags='-MMD'
4207         _cflags_speed='-O3'
4208         _cflags_size='-Os'
4209     elif $_cc -v 2>&1 | grep -q clang; then
4210         _type=clang
4211         _ident=$($_cc --version 2>/dev/null | head -n1)
4212         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4213         _cflags_speed='-O3'
4214         _cflags_size='-Oz'
4215     elif $_cc -V 2>&1 | grep -q Sun; then
4216         _type=suncc
4217         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4218         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4219         _DEPFLAGS='-xM1 -xc99'
4220         _ldflags='-std=c99'
4221         _cflags_speed='-O5'
4222         _cflags_size='-O5 -xspace'
4223         _flags_filter=suncc_flags
4224     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4225         _type=pathscale
4226         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4227         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4228         _cflags_speed='-O2'
4229         _cflags_size='-Os'
4230         _flags_filter='filter_out -Wdisabled-optimization'
4231     elif $_cc -v 2>&1 | grep -q Open64; then
4232         _type=open64
4233         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4234         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4235         _cflags_speed='-O2'
4236         _cflags_size='-Os'
4237         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4238     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4239         _type=armasm
4240         _ident=$($_cc | head -n1)
4241         # 4509: "This form of conditional instruction is deprecated"
4242         _flags="-nologo -ignore 4509"
4243         _flags_filter=armasm_flags
4244     elif $_cc 2>&1 | grep -q Intel; then
4245         _type=icl
4246         _ident=$($_cc 2>&1 | head -n1)
4247         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4248         # Not only is O3 broken on 13.x+ but it is slower on all previous
4249         # versions (tested) as well.
4250         _cflags_speed="-O2"
4251         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4252         if $_cc 2>&1 | grep -q Linker; then
4253             _ld_o='-out:$@'
4254         else
4255             _ld_o='-Fe$@'
4256         fi
4257         _cc_o='-Fo$@'
4258         _cc_e='-P'
4259         _flags_filter=icl_flags
4260         _ld_lib='lib%.a'
4261         _ld_path='-libpath:'
4262         # -Qdiag-error to make icl error when seeing certain unknown arguments
4263         _flags='-nologo -Qdiag-error:4044,10157'
4264         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4265         # with MSVC which enables it by default.
4266         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4267         disable stripping
4268     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4269         # lld can emulate multiple different linkers; in ms link.exe mode,
4270         # the -? parameter gives the help output which contains an identifyable
4271         # string, while it gives an error in other modes.
4272         _type=lld-link
4273         # The link.exe mode doesn't have a switch for getting the version,
4274         # but we can force it back to gnu mode and get the version from there.
4275         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4276         _ld_o='-out:$@'
4277         _flags_filter=msvc_flags
4278         _ld_lib='lib%.a'
4279         _ld_path='-libpath:'
4280     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4281         _type=msvc
4282         _ident=$($_cc 2>&1 | head -n1)
4283         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4284         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4285         _cflags_speed="-O2"
4286         _cflags_size="-O1"
4287         _cflags_noopt="-O1"
4288         if $_cc -nologo- 2>&1 | grep -q Linker; then
4289             _ld_o='-out:$@'
4290         else
4291             _ld_o='-Fe$@'
4292         fi
4293         _cc_o='-Fo$@'
4294         _cc_e='-P -Fi$@'
4295         _flags_filter=msvc_flags
4296         _ld_lib='lib%.a'
4297         _ld_path='-libpath:'
4298         _flags='-nologo'
4299         disable stripping
4300     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4301         _type=cparser
4302         _ident=$($_cc --version | head -n1)
4303         _depflags='-MMD'
4304         _cflags_speed='-O4'
4305         _cflags_size='-O2'
4306         _flags_filter=cparser_flags
4307     fi
4308
4309     eval ${pfx}_type=\$_type
4310     eval ${pfx}_ident=\$_ident
4311 }
4312
4313 set_ccvars(){
4314     eval ${1}_C=\${_cc_c-\${${1}_C}}
4315     eval ${1}_E=\${_cc_e-\${${1}_E}}
4316     eval ${1}_O=\${_cc_o-\${${1}_O}}
4317
4318     if [ -n "$_depflags" ]; then
4319         eval ${1}_DEPFLAGS=\$_depflags
4320     else
4321         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4322         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4323         eval DEP${1}FLAGS=\$_flags
4324     fi
4325 }
4326
4327 probe_cc cc "$cc" "true"
4328 cflags_filter=$_flags_filter
4329 cflags_speed=$_cflags_speed
4330 cflags_size=$_cflags_size
4331 cflags_noopt=$_cflags_noopt
4332 add_cflags $_flags $_cflags
4333 cc_ldflags=$_ldflags
4334 set_ccvars CC
4335 set_ccvars CXX
4336
4337 probe_cc hostcc "$host_cc"
4338 host_cflags_filter=$_flags_filter
4339 host_cflags_speed=$_cflags_speed
4340 add_host_cflags  $_flags $_cflags
4341 set_ccvars HOSTCC
4342
4343 test -n "$cc_type" && enable $cc_type ||
4344     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4345
4346 : ${as_default:=$cc}
4347 : ${objcc_default:=$cc}
4348 : ${dep_cc_default:=$cc}
4349 : ${ld_default:=$cc}
4350 : ${host_ld_default:=$host_cc}
4351 set_default ar as objcc dep_cc ld ln_s host_ld windres
4352
4353 probe_cc as "$as"
4354 asflags_filter=$_flags_filter
4355 add_asflags $_flags $_cflags
4356 set_ccvars AS
4357
4358 probe_cc objcc "$objcc"
4359 objcflags_filter=$_flags_filter
4360 add_objcflags $_flags $_cflags
4361 set_ccvars OBJC
4362
4363 probe_cc ld "$ld"
4364 ldflags_filter=$_flags_filter
4365 add_ldflags $_flags $_ldflags
4366 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4367 LD_O=${_ld_o-$LD_O}
4368 LD_LIB=${_ld_lib-$LD_LIB}
4369 LD_PATH=${_ld_path-$LD_PATH}
4370
4371 probe_cc hostld "$host_ld"
4372 host_ldflags_filter=$_flags_filter
4373 add_host_ldflags $_flags $_ldflags
4374 HOSTLD_O=${_ld_o-$HOSTLD_O}
4375
4376 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4377     probe_cc depcc "$dep_cc"
4378     CCDEP=${_DEPCMD:-$DEPCMD}
4379     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4380     DEPCCFLAGS=$_flags
4381 fi
4382
4383 if $ar 2>&1 | grep -q Microsoft; then
4384     arflags="-nologo"
4385     ar_o='-out:$@'
4386 elif $ar 2>&1 | grep -q "\[D\] "; then
4387     arflags="rcD"
4388     ar_o='$@'
4389 else
4390     arflags="rc"
4391     ar_o='$@'
4392 fi
4393
4394 add_cflags $extra_cflags
4395 add_cxxflags $extra_cxxflags
4396 add_objcflags $extra_objcflags
4397 add_asflags $extra_cflags
4398
4399 if test -n "$sysroot"; then
4400     case "$cc_type" in
4401         gcc|llvm_gcc|clang)
4402             add_cppflags --sysroot="$sysroot"
4403             add_ldflags --sysroot="$sysroot"
4404         ;;
4405     esac
4406 fi
4407
4408 if test "$cpu" = host; then
4409     enabled cross_compile &&
4410         die "--cpu=host makes no sense when cross-compiling."
4411
4412     case "$cc_type" in
4413         gcc|llvm_gcc)
4414             check_native(){
4415                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4416                 sed -n "/cc1.*$1=/{
4417                             s/.*$1=\\([^ ]*\\).*/\\1/
4418                             p
4419                             q
4420                         }" $TMPE
4421             }
4422             cpu=$(check_native -march || check_native -mcpu)
4423         ;;
4424         clang)
4425             check_native(){
4426                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4427                 sed -n "/cc1.*-target-cpu /{
4428                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4429                             p
4430                             q
4431                         }" $TMPE
4432             }
4433             cpu=$(check_native -march)
4434         ;;
4435     esac
4436
4437     test "${cpu:-host}" = host &&
4438         die "--cpu=host not supported with compiler $cc"
4439 fi
4440
4441 # Deal with common $arch aliases
4442 case "$arch" in
4443     aarch64|arm64)
4444         arch="aarch64"
4445     ;;
4446     arm*|iPad*|iPhone*)
4447         arch="arm"
4448     ;;
4449     mips*|IP*)
4450         case "$arch" in
4451         *el)
4452             add_cppflags -EL
4453             add_ldflags -EL
4454         ;;
4455         *eb)
4456             add_cppflags -EB
4457             add_ldflags -EB
4458         ;;
4459         esac
4460         arch="mips"
4461     ;;
4462     parisc*|hppa*)
4463         arch="parisc"
4464     ;;
4465     "Power Macintosh"|ppc*|powerpc*)
4466         arch="ppc"
4467     ;;
4468     s390|s390x)
4469         arch="s390"
4470     ;;
4471     sh4|sh)
4472         arch="sh4"
4473     ;;
4474     sun4*|sparc*)
4475         arch="sparc"
4476     ;;
4477     tilegx|tile-gx)
4478         arch="tilegx"
4479     ;;
4480     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4481         arch="x86"
4482     ;;
4483 esac
4484
4485 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4486 enable $arch
4487
4488 # Add processor-specific flags
4489 if enabled aarch64; then
4490
4491     case $cpu in
4492         armv*)
4493             cpuflags="-march=$cpu"
4494         ;;
4495         *)
4496             cpuflags="-mcpu=$cpu"
4497         ;;
4498     esac
4499
4500 elif enabled alpha; then
4501
4502     cpuflags="-mcpu=$cpu"
4503
4504 elif enabled arm; then
4505
4506     check_arm_arch() {
4507         check_cpp_condition stddef.h \
4508             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4509             $cpuflags
4510     }
4511
4512     probe_arm_arch() {
4513         if   check_arm_arch 4;        then echo armv4
4514         elif check_arm_arch 4T;       then echo armv4t
4515         elif check_arm_arch 5;        then echo armv5
4516         elif check_arm_arch 5E;       then echo armv5e
4517         elif check_arm_arch 5T;       then echo armv5t
4518         elif check_arm_arch 5TE;      then echo armv5te
4519         elif check_arm_arch 5TEJ;     then echo armv5te
4520         elif check_arm_arch 6;        then echo armv6
4521         elif check_arm_arch 6J;       then echo armv6j
4522         elif check_arm_arch 6K;       then echo armv6k
4523         elif check_arm_arch 6Z;       then echo armv6z
4524         elif check_arm_arch 6ZK;      then echo armv6zk
4525         elif check_arm_arch 6T2;      then echo armv6t2
4526         elif check_arm_arch 7;        then echo armv7
4527         elif check_arm_arch 7A  7_A;  then echo armv7-a
4528         elif check_arm_arch 7S;       then echo armv7-a
4529         elif check_arm_arch 7R  7_R;  then echo armv7-r
4530         elif check_arm_arch 7M  7_M;  then echo armv7-m
4531         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4532         elif check_arm_arch 8A  8_A;  then echo armv8-a
4533         fi
4534     }
4535
4536     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4537
4538     case $cpu in
4539         armv*)
4540             cpuflags="-march=$cpu"
4541             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4542         ;;
4543         *)
4544             cpuflags="-mcpu=$cpu"
4545             case $cpu in
4546                 cortex-a*)                               subarch=armv7a  ;;
4547                 cortex-r*)                               subarch=armv7r  ;;
4548                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4549                 arm11*)                                  subarch=armv6   ;;
4550                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4551                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4552                 *)                             subarch=$(probe_arm_arch) ;;
4553             esac
4554         ;;
4555     esac
4556
4557     case "$subarch" in
4558         armv5t*)    enable fast_clz                ;;
4559         armv[6-8]*)
4560             enable fast_clz
4561             disabled fast_unaligned || enable fast_unaligned
4562             ;;
4563     esac
4564
4565 elif enabled avr32; then
4566
4567     case $cpu in
4568         ap7[02]0[0-2])
4569             subarch="avr32_ap"
4570             cpuflags="-mpart=$cpu"
4571         ;;
4572         ap)
4573             subarch="avr32_ap"
4574             cpuflags="-march=$cpu"
4575         ;;
4576         uc3[ab]*)
4577             subarch="avr32_uc"
4578             cpuflags="-mcpu=$cpu"
4579         ;;
4580         uc)
4581             subarch="avr32_uc"
4582             cpuflags="-march=$cpu"
4583         ;;
4584     esac
4585
4586 elif enabled bfin; then
4587
4588     cpuflags="-mcpu=$cpu"
4589
4590 elif enabled mips; then
4591
4592     cpuflags="-march=$cpu"
4593
4594     if [ "$cpu" != "generic" ]; then
4595         disable mips32r2
4596         disable mips32r5
4597         disable mips64r2
4598         disable mips32r6
4599         disable mips64r6
4600         disable loongson2
4601         disable loongson3
4602
4603         case $cpu in
4604             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4605                 enable mips32r2
4606                 disable msa
4607             ;;
4608             p5600|i6400|p6600)
4609                 disable mipsdsp
4610                 disable mipsdspr2
4611             ;;
4612             loongson*)
4613                 enable loongson2
4614                 enable loongson3
4615                 enable local_aligned
4616                 enable simd_align_16
4617                 enable fast_64bit
4618                 enable fast_clz
4619                 enable fast_cmov
4620                 enable fast_unaligned
4621                 disable aligned_stack
4622                 disable mipsfpu
4623                 disable mipsdsp
4624                 disable mipsdspr2
4625                 case $cpu in
4626                     loongson3*)
4627                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4628                     ;;
4629                     loongson2e)
4630                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4631                     ;;
4632                     loongson2f)
4633                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4634                     ;;
4635                 esac
4636             ;;
4637             *)
4638                 # Unknown CPU. Disable everything.
4639                 warn "unknown CPU. Disabling all MIPS optimizations."
4640                 disable mipsfpu
4641                 disable mipsdsp
4642                 disable mipsdspr2
4643                 disable msa
4644                 disable mmi
4645             ;;
4646         esac
4647
4648         case $cpu in
4649             24kc)
4650                 disable mipsfpu
4651                 disable mipsdsp
4652                 disable mipsdspr2
4653             ;;
4654             24kf*)
4655                 disable mipsdsp
4656                 disable mipsdspr2
4657             ;;
4658             24kec|34kc|1004kc)
4659                 disable mipsfpu
4660                 disable mipsdspr2
4661             ;;
4662             24kef*|34kf*|1004kf*)
4663                 disable mipsdspr2
4664             ;;
4665             74kc)
4666                 disable mipsfpu
4667             ;;
4668             p5600)
4669                 enable mips32r5
4670                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4671             ;;
4672             i6400)
4673                 enable mips64r6
4674                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4675             ;;
4676             p6600)
4677                 enable mips64r6
4678                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4679             ;;
4680         esac
4681     else
4682         # We do not disable anything. Is up to the user to disable the unwanted features.
4683         warn 'generic cpu selected'
4684     fi
4685
4686 elif enabled ppc; then
4687
4688     disable ldbrx
4689
4690     case $(tolower $cpu) in
4691         601|ppc601|powerpc601)
4692             cpuflags="-mcpu=601"
4693             disable altivec
4694         ;;
4695         603*|ppc603*|powerpc603*)
4696             cpuflags="-mcpu=603"
4697             disable altivec
4698         ;;
4699         604*|ppc604*|powerpc604*)
4700             cpuflags="-mcpu=604"
4701             disable altivec
4702         ;;
4703         g3|75*|ppc75*|powerpc75*)
4704             cpuflags="-mcpu=750"
4705             disable altivec
4706         ;;
4707         g4|745*|ppc745*|powerpc745*)
4708             cpuflags="-mcpu=7450"
4709             disable vsx
4710         ;;
4711         74*|ppc74*|powerpc74*)
4712             cpuflags="-mcpu=7400"
4713             disable vsx
4714         ;;
4715         g5|970|ppc970|powerpc970)
4716             cpuflags="-mcpu=970"
4717             disable vsx
4718         ;;
4719         power[3-6]*)
4720             cpuflags="-mcpu=$cpu"
4721             disable vsx
4722         ;;
4723         power[7-8]*)
4724             cpuflags="-mcpu=$cpu"
4725         ;;
4726         cell)
4727             cpuflags="-mcpu=cell"
4728             enable ldbrx
4729             disable vsx
4730         ;;
4731         e500mc)
4732             cpuflags="-mcpu=e500mc"
4733             disable altivec
4734         ;;
4735         e500v2)
4736             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4737             disable altivec
4738             disable dcbzl
4739         ;;
4740         e500)
4741             cpuflags="-mcpu=8540 -mhard-float"
4742             disable altivec
4743             disable dcbzl
4744         ;;
4745     esac
4746
4747 elif enabled sparc; then
4748
4749     case $cpu in
4750         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4751             cpuflags="-mcpu=$cpu"
4752         ;;
4753         ultrasparc*|niagara[234])
4754             cpuflags="-mcpu=$cpu"
4755         ;;
4756     esac
4757
4758 elif enabled x86; then
4759
4760     case $cpu in
4761         i[345]86|pentium)
4762             cpuflags="-march=$cpu"
4763             disable i686
4764             disable mmx
4765         ;;
4766         # targets that do NOT support nopl and conditional mov (cmov)
4767         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4768             cpuflags="-march=$cpu"
4769             disable i686
4770         ;;
4771         # targets that do support nopl and conditional mov (cmov)
4772         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4773         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4774         |amdfam10|barcelona|b[dt]ver*|znver*)
4775             cpuflags="-march=$cpu"
4776             enable i686
4777             enable fast_cmov
4778         ;;
4779         # targets that do support conditional mov but on which it's slow
4780         pentium4|pentium4m|prescott|nocona)
4781             cpuflags="-march=$cpu"
4782             enable i686
4783             disable fast_cmov
4784         ;;
4785     esac
4786
4787 fi
4788
4789 if [ "$cpu" != generic ]; then
4790     add_cflags  $cpuflags
4791     add_asflags $cpuflags
4792     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4793 fi
4794
4795 # compiler sanity check
4796 check_exec <<EOF
4797 int main(void){ return 0; }
4798 EOF
4799 if test "$?" != 0; then
4800     echo "$cc is unable to create an executable file."
4801     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4802         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4803         echo "Only do this if you know what cross compiling means."
4804     fi
4805     die "C compiler test failed."
4806 fi
4807
4808 add_cppflags -D_ISOC99_SOURCE
4809 add_cxxflags -D__STDC_CONSTANT_MACROS
4810 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4811
4812 # some compilers silently accept -std=c11, so we also need to check that the
4813 # version macro is defined properly
4814 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4815     add_cflags -std=c11 ||
4816     check_cflags -std=c99
4817
4818 check_cppflags -D_FILE_OFFSET_BITS=64
4819 check_cppflags -D_LARGEFILE_SOURCE
4820
4821 add_host_cppflags -D_ISOC99_SOURCE
4822 check_host_cflags -std=c99
4823 check_host_cflags -Wall
4824 check_host_cflags $host_cflags_speed
4825
4826 check_64bit(){
4827     arch32=$1
4828     arch64=$2
4829     expr=$3
4830     check_code cc "" "int test[2*($expr) - 1]" &&
4831         subarch=$arch64 || subarch=$arch32
4832     enable $subarch
4833 }
4834
4835 case "$arch" in
4836     aarch64|alpha|ia64)
4837         enabled shared && enable_weak pic
4838     ;;
4839     mips)
4840         check_64bit mips mips64 '_MIPS_SIM > 1'
4841         enabled shared && enable_weak pic
4842     ;;
4843     parisc)
4844         check_64bit parisc parisc64 'sizeof(void *) > 4'
4845         enabled shared && enable_weak pic
4846     ;;
4847     ppc)
4848         check_64bit ppc ppc64 'sizeof(void *) > 4'
4849         enabled shared && enable_weak pic
4850     ;;
4851     s390)
4852         check_64bit s390 s390x 'sizeof(void *) > 4'
4853         enabled shared && enable_weak pic
4854     ;;
4855     sparc)
4856         check_64bit sparc sparc64 'sizeof(void *) > 4'
4857         enabled shared && enable_weak pic
4858     ;;
4859     x86)
4860         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4861         # Treat x32 as x64 for now. Note it also needs pic if shared
4862         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4863             subarch=x86_64 && enable x86_64 && disable x86_32
4864         if enabled x86_64; then
4865             enabled shared && enable_weak pic
4866             objformat=elf64
4867         fi
4868     ;;
4869 esac
4870
4871 # OS specific
4872 case $target_os in
4873     aix)
4874         SHFLAGS=-shared
4875         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4876         enabled shared && add_ldflags -Wl,-brtl
4877         arflags='-Xany -r -c'
4878         ;;
4879     android)
4880         disable symver
4881         enable section_data_rel_ro
4882         SLIB_INSTALL_NAME='$(SLIBNAME)'
4883         SLIB_INSTALL_LINKS=
4884         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4885         ;;
4886     haiku)
4887         prefix_default="/boot/common"
4888         network_extralibs="-lnetwork"
4889         host_extralibs=
4890         ;;
4891     sunos)
4892         SHFLAGS='-shared -Wl,-h,$$(@F)'
4893         enabled x86 && append SHFLAGS -mimpure-text
4894         network_extralibs="-lsocket -lnsl"
4895         add_cppflags -D__EXTENSIONS__
4896         # When using suncc to build, the Solaris linker will mark
4897         # an executable with each instruction set encountered by
4898         # the Solaris assembler.  As our libraries contain their own
4899         # guards for processor-specific code, instead suppress
4900         # generation of the HWCAPS ELF section on Solaris x86 only.
4901         enabled_all suncc x86 &&
4902             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4903             add_ldflags -Wl,-M,mapfile
4904         nm_default='nm -P -g'
4905         version_script='-M'
4906         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4907         ;;
4908     netbsd)
4909         disable symver
4910         oss_indev_extralibs="-lossaudio"
4911         oss_outdev_extralibs="-lossaudio"
4912         enabled gcc || check_ldflags -Wl,-zmuldefs
4913         ;;
4914     openbsd|bitrig)
4915         disable symver
4916         SHFLAGS='-shared'
4917         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4918         SLIB_INSTALL_LINKS=
4919         oss_indev_extralibs="-lossaudio"
4920         oss_outdev_extralibs="-lossaudio"
4921         ;;
4922     dragonfly)
4923         disable symver
4924         ;;
4925     freebsd)
4926         ;;
4927     bsd/os)
4928         add_extralibs -lpoll -lgnugetopt
4929         strip="strip -d"
4930         ;;
4931     darwin)
4932         enabled ppc && add_asflags -force_cpusubtype_ALL
4933         install_name_dir_default='$(SHLIBDIR)'
4934         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4935         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4936         strip="${strip} -x"
4937         add_ldflags -Wl,-dynamic,-search_paths_first
4938         check_cflags -Werror=partial-availability
4939         SLIBSUF=".dylib"
4940         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4941         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4942         enabled x86_64 && objformat="macho64" || objformat="macho32"
4943         enabled_any pic shared x86_64 ||
4944             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4945         check_header dispatch/dispatch.h &&
4946             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4947         if test -n "$sysroot"; then
4948             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4949             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4950         fi
4951         version_script='-exported_symbols_list'
4952         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4953         ;;
4954     msys*)
4955         die "Native MSYS builds are discouraged, please use the MINGW environment."
4956         ;;
4957     mingw32*|mingw64*)
4958         target_os=mingw32
4959         if enabled shared; then
4960             # Cannot build both shared and static libs when using dllexport.
4961             disable static
4962         fi
4963         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4964         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4965         shlibdir_default="$bindir_default"
4966         SLIBPREF=""
4967         SLIBSUF=".dll"
4968         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4969         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4970         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4971         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4972         SLIB_INSTALL_LINKS=
4973         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4974         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4975         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4976         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4977         enabled x86_64 && objformat="win64" || objformat="win32"
4978         ranlib=:
4979         enable dos_paths
4980         check_ldflags -Wl,--nxcompat,--dynamicbase
4981         # Lets work around some stupidity in binutils.
4982         # ld will strip relocations from executables even though we need them
4983         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4984         # however ld then forgets what the entry point should be (oops) so we
4985         # have to manually (re)set it.
4986         if enabled x86_32; then
4987             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4988         elif enabled x86_64; then
4989             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4990             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4991             # Set image base >4GB for extra entropy with HEASLR
4992             add_ldexeflags -Wl,--image-base,0x140000000
4993             append SHFLAGS -Wl,--image-base,0x180000000
4994         fi
4995         ;;
4996     win32|win64)
4997         disable symver
4998         if enabled shared; then
4999             # Link to the import library instead of the normal static library
5000             # for shared libs.
5001             LD_LIB='%.lib'
5002             # Cannot build both shared and static libs with MSVC or icl.
5003             disable static
5004         fi
5005         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5006         shlibdir_default="$bindir_default"
5007         SLIBPREF=""
5008         SLIBSUF=".dll"
5009         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5010         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5011         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5012         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5013         SLIB_INSTALL_LINKS=
5014         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5015         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5016         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5017         enabled x86_64 && objformat="win64" || objformat="win32"
5018         ranlib=:
5019         enable dos_paths
5020         ;;
5021     cygwin*)
5022         target_os=cygwin
5023         shlibdir_default="$bindir_default"
5024         SLIBPREF="cyg"
5025         SLIBSUF=".dll"
5026         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5027         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5028         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5029         SLIB_INSTALL_LINKS=
5030         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5031         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5032         enabled x86_64 && objformat="win64" || objformat="win32"
5033         enable dos_paths
5034         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5035         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5036         ;;
5037     *-dos|freedos|opendos)
5038         network_extralibs="-lsocket"
5039         objformat="coff"
5040         enable dos_paths
5041         add_cppflags -U__STRICT_ANSI__
5042         ;;
5043     linux)
5044         enable section_data_rel_ro
5045         enabled_any arm aarch64 && enable_weak linux_perf
5046         ;;
5047     irix*)
5048         target_os=irix
5049         ranlib="echo ignoring ranlib"
5050         ;;
5051     os/2*)
5052         strip="lxlite -CS"
5053         striptype=""
5054         objformat="aout"
5055         add_cppflags -D_GNU_SOURCE
5056         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5057         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5058         LIBSUF="_s.a"
5059         SLIBPREF=""
5060         SLIBSUF=".dll"
5061         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5062         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5063         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5064             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5065             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5066             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5067             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5068         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5069             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5070         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5071         SLIB_INSTALL_LINKS=
5072         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5073         enable dos_paths
5074         enable_weak os2threads
5075         ;;
5076     gnu/kfreebsd)
5077         add_cppflags -D_BSD_SOURCE
5078         ;;
5079     gnu)
5080         ;;
5081     qnx)
5082         add_cppflags -D_QNX_SOURCE
5083         network_extralibs="-lsocket"
5084         ;;
5085     symbian)
5086         SLIBSUF=".dll"
5087         enable dos_paths
5088         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5089         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5090         add_ldflags -Wl,--target1-abs,--no-undefined \
5091                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5092                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5093         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5094                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5095                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5096         ;;
5097     minix)
5098         ;;
5099     none)
5100         ;;
5101     *)
5102         die "Unknown OS '$target_os'."
5103         ;;
5104 esac
5105
5106 # test if creating links works
5107 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5108 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5109 mkdir "$link_dest"
5110 $ln_s "$link_dest" "$link_name"
5111 touch "$link_dest/test_file"
5112 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5113     # create link to source path
5114     [ -e src ] && rm src
5115     $ln_s "$source_path" src
5116     source_link=src
5117 else
5118     # creating directory links doesn't work
5119     # fall back to using the full source path
5120     source_link="$source_path"
5121 fi
5122 # cleanup
5123 rm -r "$link_dest"
5124 rm -r "$link_name"
5125
5126 # determine libc flavour
5127
5128 probe_libc(){
5129     pfx=$1
5130     pfx_no_=${pfx%_}
5131     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5132     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5133         eval ${pfx}libc_type=uclibc
5134         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5135     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5136         eval ${pfx}libc_type=glibc
5137         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5138     # MinGW headers can be installed on Cygwin, so check for newlib first.
5139     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5140         eval ${pfx}libc_type=newlib
5141         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5142     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5143     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5144         eval ${pfx}libc_type=mingw64
5145         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5146             add_compat msvcrt/snprintf.o
5147             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5148         fi
5149         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5150         eval test \$${pfx_no_}cc_type = "gcc" &&
5151             add_${pfx}cppflags -D__printf__=__gnu_printf__
5152     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5153          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5154         eval ${pfx}libc_type=mingw32
5155         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5156             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5157             die "ERROR: MinGW32 runtime version must be >= 3.15."
5158         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5159         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5160             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5161         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5162             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5163         eval test \$${pfx_no_}cc_type = "gcc" &&
5164             add_${pfx}cppflags -D__printf__=__gnu_printf__
5165     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5166         eval ${pfx}libc_type=msvcrt
5167         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5168             if [ "$pfx" = host_ ]; then
5169                 add_host_cppflags -Dsnprintf=_snprintf
5170             else
5171                 add_compat strtod.o strtod=avpriv_strtod
5172                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5173                                              _snprintf=avpriv_snprintf  \
5174                                              vsnprintf=avpriv_vsnprintf
5175             fi
5176         fi
5177         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5178         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5179         # 0x601 by default unless something else is set by the user.
5180         # This can easily lead to us detecting functions only present
5181         # in such new versions and producing binaries requiring windows 7.0.
5182         # Therefore explicitly set the default to XP unless the user has
5183         # set something else on the command line.
5184         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5185         # family. For these cases, configure is free to use any functions
5186         # found in the SDK headers by default. (Alternatively, we could force
5187         # _WIN32_WINNT to 0x0602 in that case.)
5188         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5189             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5190 #ifdef WINAPI_FAMILY
5191 #include <winapifamily.h>
5192 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5193 #error not desktop
5194 #endif
5195 #endif
5196 EOF
5197         if [ "$pfx" = "" ]; then
5198             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5199             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5200         fi
5201     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5202         eval ${pfx}libc_type=klibc
5203     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5204         eval ${pfx}libc_type=bionic
5205     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5206         eval ${pfx}libc_type=solaris
5207         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5208     fi
5209     check_${pfx}cc <<EOF
5210 #include <time.h>
5211 void *v = localtime_r;
5212 EOF
5213 test "$?" != 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
5214 #include <time.h>
5215 void *v = localtime_r;
5216 EOF
5217
5218     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5219 }
5220
5221 probe_libc
5222 probe_libc host_
5223
5224 # hacks for compiler/libc/os combinations
5225
5226 case $libc_type in
5227     bionic)
5228         add_compat strtod.o strtod=avpriv_strtod
5229         ;;
5230 esac
5231
5232 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5233     add_cppflags '-I\$(SRC_PATH)/compat/float'
5234
5235 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5236
5237 set_default libdir
5238 : ${shlibdir_default:="$libdir"}
5239 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5240
5241 set_default $PATHS_LIST
5242 set_default nm
5243
5244 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5245
5246 enable_weak_pic() {
5247     disabled pic && return
5248     enable pic
5249     add_cppflags -DPIC
5250     case "$target_os" in
5251     mingw*|cygwin*|win*)
5252         ;;
5253     *)
5254         add_cflags -fPIC
5255         add_asflags -fPIC
5256         ;;
5257     esac
5258 }
5259
5260 enabled pic && enable_weak_pic
5261
5262 check_cc <<EOF || die "Symbol mangling check failed."
5263 int ff_extern;
5264 EOF
5265 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5266 extern_prefix=${sym%%ff_extern*}
5267
5268 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5269
5270 _restrict=
5271 for restrict_keyword in restrict __restrict__ __restrict; do
5272     check_cc <<EOF && _restrict=$restrict_keyword && break
5273 void foo(char * $restrict_keyword p);
5274 EOF
5275 done
5276
5277 check_cc <<EOF && enable pragma_deprecated
5278 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5279 EOF
5280
5281 check_cc <<EOF || die "endian test failed"
5282 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5283 EOF
5284 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5285
5286 check_cc <<EOF && enable const_nan
5287 #include <math.h>
5288 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5289 EOF
5290
5291 if ! enabled ppc64 || enabled bigendian; then
5292     disable vsx
5293 fi
5294
5295 check_gas() {
5296     log "check_gas using '$as' as AS"
5297     # :vararg is used on aarch64, arm and ppc altivec
5298     check_as <<EOF || return 1
5299 .macro m n, y:vararg=0
5300 \n: .int \y
5301 .endm
5302 m x
5303 EOF
5304     # .altmacro is only used in arm asm
5305     ! enabled arm || check_as <<EOF || return 1
5306 .altmacro
5307 EOF
5308     enable gnu_as
5309     return 0
5310 }
5311
5312 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5313     nogas=:
5314     enabled_any arm aarch64 && nogas=die
5315     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5316     as_noop=-v
5317
5318     case $as_type in
5319         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5320         gcc)  gaspp_as_type=gas ;;
5321         *)    gaspp_as_type=$as_type ;;
5322     esac
5323
5324     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5325
5326     test "${as#*gas-preprocessor.pl}" != "$as" ||
5327     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5328         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5329
5330     if ! check_gas ; then
5331         as=${gas:=$as}
5332         check_gas || \
5333             $nogas "GNU assembler not found, install/update gas-preprocessor"
5334     fi
5335
5336     check_as <<EOF && enable as_func
5337 .func test
5338 .endfunc
5339 EOF
5340 fi
5341
5342 check_inline_asm inline_asm_labels '"1:\n"'
5343
5344 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5345
5346 if enabled aarch64; then
5347     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5348     # internal assembler in clang 3.3 does not support this instruction
5349     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5350     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5351
5352     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5353
5354 elif enabled alpha; then
5355
5356     check_cflags -mieee
5357
5358 elif enabled arm; then
5359
5360     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5361
5362     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5363 float func(float a, float b){ return a+b; }
5364 EOF
5365
5366     enabled thumb && check_cflags -mthumb || check_cflags -marm
5367
5368     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5369         enable vfp_args
5370     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5371         enable vfp_args
5372     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5373         case "${cross_prefix:-$cc}" in
5374             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5375             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5376 __asm__ (".eabi_attribute 28, 1");
5377 int main(void) { return 0; }
5378 EOF
5379         esac
5380         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5381     fi
5382
5383     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5384     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5385     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5386     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5387     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5388     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5389     enabled setend  && check_insn setend  'setend be'
5390
5391     [ $target_os = linux ] || [ $target_os = android ] ||
5392         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5393             $ARCH_EXT_LIST_ARM
5394
5395     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5396
5397     check_as <<EOF && enable as_arch_directive
5398 .arch armv7-a
5399 EOF
5400     check_as <<EOF && enable as_fpu_directive
5401 .fpu neon
5402 EOF
5403
5404     # llvm's integrated assembler supports .object_arch from llvm 3.5
5405     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5406         check_as <<EOF && enable as_object_arch
5407 .object_arch armv4
5408 EOF
5409
5410     # MS armasm fails to assemble our PIC constructs
5411     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5412
5413 elif enabled mips; then
5414
5415     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5416     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5417     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5418
5419     # Enable minimum ISA based on selected options
5420     if enabled mips64; then
5421         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5422         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5423         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5424     else
5425         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5426         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5427         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5428         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5429     fi
5430
5431     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5432     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5433     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5434     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5435     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5436
5437     if enabled bigendian && enabled msa; then
5438         disable msa
5439     fi
5440
5441 elif enabled parisc; then
5442
5443     if enabled gcc; then
5444         case $($cc -dumpversion) in
5445             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5446         esac
5447     fi
5448
5449 elif enabled ppc; then
5450
5451     enable local_aligned
5452
5453     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5454     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5455     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5456     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5457
5458     if enabled altivec; then
5459         check_cflags -maltivec -mabi=altivec
5460
5461         # check if our compiler supports Motorola AltiVec C API
5462         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5463                                  vector signed int v2 = (vector signed int) { 1 };
5464                                  v1 = vec_add(v1, v2);" ||
5465             disable altivec
5466
5467         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5468     fi
5469
5470     if enabled vsx; then
5471         check_cflags -mvsx &&
5472         check_code cc altivec.h "int v[4] = { 0 };
5473                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5474             disable vsx
5475     fi
5476
5477     if enabled power8; then
5478         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5479     fi
5480
5481 elif enabled x86; then
5482
5483     check_builtin rdtsc    intrin.h   "__rdtsc()"
5484     check_builtin mm_empty mmintrin.h "_mm_empty()"
5485
5486     enable local_aligned
5487
5488     # check whether EBP is available on x86
5489     # As 'i' is stored on the stack, this program will crash
5490     # if the base pointer is used to access it because the
5491     # base pointer is cleared in the inline assembly code.
5492     check_exec_crash <<EOF && enable ebp_available
5493 volatile int i=0;
5494 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5495 return i;
5496 EOF
5497
5498     # check whether EBX is available on x86
5499     check_inline_asm ebx_available '""::"b"(0)' &&
5500         check_inline_asm ebx_available '"":::"%ebx"'
5501
5502     # check whether xmm clobbers are supported
5503     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5504
5505     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5506         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5507
5508     # check whether binutils is new enough to compile SSSE3/MMXEXT
5509     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5510     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5511
5512     probe_x86asm(){
5513         x86asmexe_probe=$1
5514         if check_cmd $x86asmexe_probe -v; then
5515             x86asmexe=$x86asmexe_probe
5516             x86asm_type=nasm
5517             x86asm_debug="-g -F dwarf"
5518             X86ASMDEP=
5519             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5520         elif check_cmd $x86asmexe_probe --version; then
5521             x86asmexe=$x86asmexe_probe
5522             x86asm_type=yasm
5523             x86asm_debug="-g dwarf2"
5524             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5525             X86ASM_DEPFLAGS=
5526         fi
5527         check_x86asm "movbe ecx, [5]" && enable x86asm
5528     }
5529
5530     if ! disabled_any asm mmx x86asm; then
5531         disable x86asm
5532         for program in $x86asmexe nasm yasm; do
5533             probe_x86asm $program && break
5534         done
5535         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5536         X86ASMFLAGS="-f $objformat"
5537         enabled pic               && append X86ASMFLAGS "-DPIC"
5538         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5539         case "$objformat" in
5540             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5541         esac
5542
5543         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5544         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5545         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5546         check_x86asm "CPU amdnop" || disable cpunop
5547     fi
5548
5549     case "$cpu" in
5550         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5551             disable fast_clz
5552         ;;
5553     esac
5554
5555 fi
5556
5557 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5558
5559 check_ldflags -Wl,--as-needed
5560 check_ldflags -Wl,-z,noexecstack
5561
5562 if ! disabled network; then
5563     check_func getaddrinfo $network_extralibs
5564     check_func inet_aton $network_extralibs
5565
5566     check_type netdb.h "struct addrinfo"
5567     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5568     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5569     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5570     check_type poll.h "struct pollfd"
5571     check_type netinet/sctp.h "struct sctp_event_subscribe"
5572     check_struct "sys/socket.h" "struct msghdr" msg_flags
5573     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5574     check_type netinet/in.h "struct sockaddr_in6"
5575     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5576     check_type "sys/types.h sys/socket.h" socklen_t
5577
5578     # Prefer arpa/inet.h over winsock2
5579     if check_header arpa/inet.h ; then
5580         check_func closesocket
5581     elif check_header winsock2.h ; then
5582         check_func_headers winsock2.h closesocket -lws2 &&
5583             network_extralibs="-lws2" ||
5584         { check_func_headers winsock2.h closesocket -lws2_32 &&
5585             network_extralibs="-lws2_32"; } || disable winsock2_h network
5586         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5587
5588         check_type ws2tcpip.h socklen_t
5589         check_type ws2tcpip.h "struct addrinfo"
5590         check_type ws2tcpip.h "struct group_source_req"
5591         check_type ws2tcpip.h "struct ip_mreq_source"
5592         check_type ws2tcpip.h "struct ipv6_mreq"
5593         check_type winsock2.h "struct pollfd"
5594         check_struct winsock2.h "struct sockaddr" sa_len
5595         check_type ws2tcpip.h "struct sockaddr_in6"
5596         check_type ws2tcpip.h "struct sockaddr_storage"
5597     else
5598         disable network
5599     fi
5600 fi
5601
5602 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5603 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5604 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5605 check_builtin sarestart signal.h "SA_RESTART"
5606 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5607 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5608 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5609 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5610
5611 case "$custom_allocator" in
5612     jemalloc)
5613         # jemalloc by default does not use a prefix
5614         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5615     ;;
5616     tcmalloc)
5617         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5618         malloc_prefix=tc_
5619     ;;
5620 esac
5621
5622 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5623 check_func  ${malloc_prefix}memalign            && enable memalign
5624 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5625
5626 check_func  access
5627 check_func_headers stdlib.h arc4random
5628 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5629 check_func  fcntl
5630 check_func  fork
5631 check_func  gethrtime
5632 check_func  getopt
5633 check_func  getrusage
5634 check_func  gettimeofday
5635 check_func  isatty
5636 check_func  mkstemp
5637 check_func  mmap
5638 check_func  mprotect
5639 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5640 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5641 check_func  sched_getaffinity
5642 check_func  setrlimit
5643 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5644 check_func  strerror_r
5645 check_func  sysconf
5646 check_func  sysctl
5647 check_func  usleep
5648
5649 check_func_headers conio.h kbhit
5650 check_func_headers io.h setmode
5651 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5652 check_func_headers mach/mach_time.h mach_absolute_time
5653 check_func_headers stdlib.h getenv
5654 check_func_headers sys/stat.h lstat
5655
5656 check_func_headers windows.h GetProcessAffinityMask
5657 check_func_headers windows.h GetProcessTimes
5658 check_func_headers windows.h GetSystemTimeAsFileTime
5659 check_func_headers windows.h LoadLibrary
5660 check_func_headers windows.h MapViewOfFile
5661 check_func_headers windows.h PeekNamedPipe
5662 check_func_headers windows.h SetConsoleTextAttribute
5663 check_func_headers windows.h SetConsoleCtrlHandler
5664 check_func_headers windows.h Sleep
5665 check_func_headers windows.h VirtualAlloc
5666 check_struct windows.h "CONDITION_VARIABLE" Ptr
5667 check_func_headers glob.h glob
5668 enabled xlib &&
5669     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5670
5671 check_header direct.h
5672 check_header dirent.h
5673 check_header dxgidebug.h
5674 check_header dxva.h
5675 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5676 check_header io.h
5677 check_header libcrystalhd/libcrystalhd_if.h
5678 check_header malloc.h
5679 check_header net/udplite.h
5680 check_header poll.h
5681 check_header sys/param.h
5682 check_header sys/resource.h
5683 check_header sys/select.h
5684 check_header sys/time.h
5685 check_header sys/un.h
5686 check_header termios.h
5687 check_header unistd.h
5688 check_header valgrind/valgrind.h
5689 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5690 check_header windows.h
5691 check_header X11/extensions/XvMClib.h
5692 check_header asm/types.h
5693
5694 # it seems there are versions of clang in some distros that try to use the
5695 # gcc headers, which explodes for stdatomic
5696 # so we also check that atomics actually work here
5697 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5698
5699 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5700 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5701 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5702 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5703 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5704
5705 enabled appkit       && check_apple_framework AppKit
5706 enabled audiotoolbox && check_apple_framework AudioToolbox
5707 enabled avfoundation && check_apple_framework AVFoundation
5708 enabled coreimage    && check_apple_framework CoreImage
5709 enabled videotoolbox && check_apple_framework VideoToolbox
5710
5711 check_apple_framework CoreFoundation
5712 check_apple_framework CoreMedia
5713 check_apple_framework CoreVideo
5714
5715 enabled avfoundation && {
5716     disable coregraphics applicationservices
5717     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5718     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5719
5720 enabled videotoolbox && {
5721     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5722     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5723 }
5724
5725 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5726
5727 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5728 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5729 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5730 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5731 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5732
5733 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5734 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5735 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5736 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5737 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5738 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5739 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5740 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5741 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5742
5743 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5744
5745 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5746
5747 if ! disabled w32threads && ! enabled pthreads; then
5748     check_func_headers "windows.h process.h" _beginthreadex &&
5749         enable w32threads || disable w32threads
5750     if ! enabled w32threads && enabled winrt; then
5751         check_func_headers "windows.h" CreateThread &&
5752             enable w32threads || disable w32threads
5753     fi
5754 fi
5755
5756 # check for some common methods of building with pthread support
5757 # do this before the optional library checks as some of them require pthreads
5758 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5759     if check_lib pthreads pthread.h pthread_join   -pthread &&
5760        check_lib pthreads pthread.h pthread_create -pthread; then
5761         add_cflags -pthread
5762     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5763          check_lib pthreads pthread.h pthread_create -pthreads; then
5764         add_cflags -pthreads
5765     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5766          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5767         add_cflags -ldl -pthread
5768     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5769          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5770         :
5771     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5772          check_lib pthreads pthread.h pthread_create -lpthread; then
5773         :
5774     elif check_func pthread_join && check_func pthread_create; then
5775         enable pthreads
5776     fi
5777     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5778
5779     if enabled pthreads; then
5780         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5781         check_func pthread_cancel $pthreads_extralibs
5782     fi
5783 fi
5784
5785 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5786 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5787 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5788
5789 # On some systems dynamic loading requires no extra linker flags
5790 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5791
5792 check_lib libm math.h sin -lm
5793
5794 atan2f_args=2
5795 copysign_args=2
5796 hypot_args=2
5797 ldexpf_args=2
5798 powf_args=2
5799
5800 for func in $MATH_FUNCS; do
5801     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5802 done
5803
5804 for func in $COMPLEX_FUNCS; do
5805     eval check_complexfunc $func \${${func}_args:-1}
5806 done
5807
5808 # these are off by default, so fail if requested and not available
5809 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5810 enabled cuvid             && { enabled cuda ||
5811                                die "ERROR: CUVID requires CUDA"; }
5812 enabled nvdec             && { enabled cuda ||
5813                                die "ERROR: NVDEC hwaccel requires CUDA"; }
5814 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5815 enabled decklink          && { require_header DeckLinkAPI.h &&
5816                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5817 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5818 enabled frei0r            && require_header frei0r.h
5819 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5820 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5821 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5822 enabled ladspa            && require_header ladspa.h
5823 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5824 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5825 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5826 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5827 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5828                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5829                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5830 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5831 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5832 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5833 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5834                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5835                                  warn "using libfdk without pkg-config"; } }
5836 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"
5837 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5838 enabled fontconfig        && enable libfontconfig
5839 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5840 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5841 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5842 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5843                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5844 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5845                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5846                                done || die "ERROR: libgsm not found"; }
5847 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5848 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5849 # While it may appear that require is being used as a pkg-config
5850 # fallback for libmfx, it is actually being used to detect a different
5851 # installation route altogether.  If libmfx is installed via the Intel
5852 # Media SDK or Intel Media Server Studio, these don't come with
5853 # pkg-config support.  Instead, users should make sure that the build
5854 # can find the libraries and headers through other means.
5855 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5856                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5857 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5858 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5859 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5860 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5861                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5862                                die "ERROR: libnpp not found"; }
5863 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5864 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5865 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5866                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5867                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5868                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5869 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5870 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5871                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5872 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5873 enabled libopus           && {
5874     enabled libopus_decoder && {
5875         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5876     }
5877     enabled libopus_encoder && {
5878         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5879     }
5880 }
5881 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5882 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5883 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5884 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5885 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5886 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5887                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5888 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5889 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5890 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5891 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5892 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5893 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5894 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5895                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5896                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5897 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5898 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5899 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5900 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5901 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5902                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5903
5904 enabled libvpx            && {
5905     enabled libvpx_vp8_decoder && {
5906         check_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5907             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5908                 die "ERROR: libvpx decoder version must be >=0.9.1";
5909     }
5910     enabled libvpx_vp8_encoder && {
5911         check_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5912             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5913                 die "ERROR: libvpx encoder version must be >=0.9.7";
5914     }
5915     enabled libvpx_vp9_decoder && {
5916         check_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5917             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5918     }
5919     enabled libvpx_vp9_encoder && {
5920         check_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5921             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5922     }
5923     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5924         die "libvpx enabled but no supported decoders found"
5925     fi
5926 }
5927
5928 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5929 enabled libwebp           && {
5930     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5931     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5932 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5933                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5934                                  warn "using libx264 without pkg-config"; } } &&
5935                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5936                              { check_cpp_condition x264.h "X264_MPEG2" &&
5937                                enable libx262; }
5938 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5939                              require_cpp_condition x265.h "X265_BUILD >= 68"
5940 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5941 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5942 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
5943 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5944 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5945                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5946                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5947 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5948 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5949 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5950                                { ! enabled cross_compile &&
5951                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5952                                  add_ldflags -L/opt/vc/lib/ &&
5953                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5954                                die "ERROR: mmal not found" &&
5955                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5956 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5957                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5958                                die "ERROR: openal not found"; } &&
5959                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5960                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5961 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5962                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5963                                die "ERROR: opencl not found"; } &&
5964                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5965                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5966                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5967 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5968                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5969                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5970                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5971                                die "ERROR: opengl not found."
5972                              }
5973 enabled omx               && require_header OMX_Core.h
5974 enabled omx_rpi           && { check_header OMX_Core.h ||
5975                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5976                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5977 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5978                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5979                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5980                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5981                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5982                                die "ERROR: openssl not found"; }
5983 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
5984                                  die "ERROR : Rockchip MPP was not found."; } &&
5985                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
5986                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
5987                                { enabled libdrm ||
5988                                  die "ERROR: rkmpp requires --enable-libdrm"; }
5989                              }
5990
5991 if enabled gcrypt; then
5992     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5993     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5994         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5995         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5996         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5997             die "ERROR: gcrypt not found"
5998         add_cflags $gcrypt_cflags
5999     else
6000         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6001     fi
6002 fi
6003
6004 if enabled sdl2; then
6005     SDL2_CONFIG="${cross_prefix}sdl2-config"
6006     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6007         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6008             disable sdl2
6009     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6010         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6011         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6012         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6013         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6014         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6015             enable sdl2
6016     fi
6017     if test $target_os = "mingw32"; then
6018         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6019     fi
6020 fi
6021
6022 if enabled decklink; then
6023     case $target_os in
6024         mingw32*|mingw64*|win32|win64)
6025             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6026             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6027             ;;
6028     esac
6029 fi
6030
6031 enabled securetransport &&
6032     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6033     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6034         disable securetransport
6035
6036 enabled securetransport &&
6037     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6038
6039 enabled schannel &&
6040     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6041     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6042     schannel_extralibs="-lsecur32" ||
6043         disable schannel
6044
6045 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6046 enabled makeinfo \
6047     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6048     && enable makeinfo_html || disable makeinfo_html
6049 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6050 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6051 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6052 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6053
6054 # check V4L2 codecs available in the API
6055 check_header linux/fb.h
6056 check_header linux/videodev2.h
6057 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6058 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6059 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6060 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6061 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6062 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6063 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6064 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6065 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6066 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6067 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6068
6069 check_header sys/videoio.h
6070 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6071
6072 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6073 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6074 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6075 # w32api 3.12 had it defined wrong
6076 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6077
6078 check_type "dshow.h" IBaseFilter
6079
6080 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6081 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6082     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6083     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6084     check_header "dev/ic/bt8xx.h"
6085
6086 if check_struct sys/soundcard.h audio_buf_info bytes; then
6087     enable_sanitized sys/soundcard.h
6088 else
6089     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6090     #include <sys/soundcard.h>
6091     audio_buf_info abc;
6092 EOF
6093 fi
6094
6095 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6096     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6097
6098 enabled libjack &&
6099     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6100
6101 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6102
6103 if enabled libcdio; then
6104     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6105     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6106     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6107     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6108     die "ERROR: No usable libcdio/cdparanoia found"
6109 fi
6110
6111 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6112     disable libxcb_shm libxcb_shape libxcb_xfixes
6113
6114 if enabled libxcb; then
6115     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6116     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6117     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6118 fi
6119
6120 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6121
6122 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6123 # the desktop api partition
6124 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6125 #ifdef WINAPI_FAMILY
6126 #include <winapifamily.h>
6127 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6128 #error desktop, not uwp
6129 #else
6130 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6131 #endif
6132 #else
6133 #error no family set
6134 #endif
6135 EOF
6136
6137 enabled vaapi &&
6138     check_lib vaapi va/va.h vaInitialize -lva
6139
6140 enabled vaapi &&
6141     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6142     disable vaapi
6143
6144 enabled vaapi &&
6145     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6146
6147 enabled vaapi &&
6148     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6149
6150 enabled vaapi &&
6151     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6152     enable vaapi_1
6153
6154 enabled vdpau &&
6155     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6156     disable vdpau
6157
6158 enabled vdpau &&
6159     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6160
6161 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6162
6163 if enabled x86; then
6164     case $target_os in
6165         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6166             ;;
6167         *)
6168             disable cuda cuvid nvdec nvenc
6169             ;;
6170     esac
6171 else
6172     disable cuda cuvid nvdec nvenc
6173 fi
6174
6175 enabled nvenc &&
6176     check_cc -I$source_path <<EOF || disable nvenc
6177 #include "compat/nvenc/nvEncodeAPI.h"
6178 NV_ENCODE_API_FUNCTION_LIST flist;
6179 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6180 int main(void) { return 0; }
6181 EOF
6182
6183 # Funny iconv installations are not unusual, so check it after all flags have been set
6184 if enabled libc_iconv; then
6185     check_func_headers iconv.h iconv
6186 elif enabled iconv; then
6187     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6188 fi
6189
6190 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6191
6192 # add some useful compiler flags if supported
6193 check_cflags -Wdeclaration-after-statement
6194 check_cflags -Wall
6195 check_cflags -Wdisabled-optimization
6196 check_cflags -Wpointer-arith
6197 check_cflags -Wredundant-decls
6198 check_cflags -Wwrite-strings
6199 check_cflags -Wtype-limits
6200 check_cflags -Wundef
6201 check_cflags -Wmissing-prototypes
6202 check_cflags -Wno-pointer-to-int-cast
6203 check_cflags -Wstrict-prototypes
6204 check_cflags -Wempty-body
6205
6206 if enabled extra_warnings; then
6207     check_cflags -Wcast-qual
6208     check_cflags -Wextra
6209     check_cflags -Wpedantic
6210 fi
6211
6212 check_disable_warning(){
6213     warning_flag=-W${1#-Wno-}
6214     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6215 }
6216
6217 test_cflags -Werror=unused-command-line-argument &&
6218     append unknown_warning_flags "-Werror=unused-command-line-argument"
6219 test_cflags -Werror=unknown-warning-option &&
6220     append unknown_warning_flags "-Werror=unknown-warning-option"
6221
6222 check_disable_warning -Wno-parentheses
6223 check_disable_warning -Wno-switch
6224 check_disable_warning -Wno-format-zero-length
6225 check_disable_warning -Wno-pointer-sign
6226 check_disable_warning -Wno-unused-const-variable
6227 check_disable_warning -Wno-bool-operation
6228
6229 check_disable_warning_headers(){
6230     warning_flag=-W${1#-Wno-}
6231     test_cflags $warning_flag && add_cflags_headers $1
6232 }
6233
6234 check_disable_warning_headers -Wno-deprecated-declarations
6235 check_disable_warning_headers -Wno-unused-variable
6236
6237 check_cc <<EOF && enable blocks_extension
6238 void (^block)(void);
6239 EOF
6240
6241 # add some linker flags
6242 check_ldflags -Wl,--warn-common
6243 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6244 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6245 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6246
6247 # add some strip flags
6248 check_stripflags -x
6249
6250 enabled neon_clobber_test &&
6251     check_ldflags -Wl,--wrap,avcodec_open2              \
6252                   -Wl,--wrap,avcodec_decode_audio4      \
6253                   -Wl,--wrap,avcodec_decode_video2      \
6254                   -Wl,--wrap,avcodec_decode_subtitle2   \
6255                   -Wl,--wrap,avcodec_encode_audio2      \
6256                   -Wl,--wrap,avcodec_encode_video2      \
6257                   -Wl,--wrap,avcodec_encode_subtitle    \
6258                   -Wl,--wrap,avcodec_send_packet        \
6259                   -Wl,--wrap,avcodec_receive_packet     \
6260                   -Wl,--wrap,avcodec_send_frame         \
6261                   -Wl,--wrap,avcodec_receive_frame      \
6262                   -Wl,--wrap,swr_convert                \
6263                   -Wl,--wrap,avresample_convert ||
6264     disable neon_clobber_test
6265
6266 enabled xmm_clobber_test &&
6267     check_ldflags -Wl,--wrap,avcodec_open2              \
6268                   -Wl,--wrap,avcodec_decode_audio4      \
6269                   -Wl,--wrap,avcodec_decode_video2      \
6270                   -Wl,--wrap,avcodec_decode_subtitle2   \
6271                   -Wl,--wrap,avcodec_encode_audio2      \
6272                   -Wl,--wrap,avcodec_encode_video2      \
6273                   -Wl,--wrap,avcodec_encode_subtitle    \
6274                   -Wl,--wrap,avcodec_send_packet        \
6275                   -Wl,--wrap,avcodec_receive_packet     \
6276                   -Wl,--wrap,avcodec_send_frame         \
6277                   -Wl,--wrap,avcodec_receive_frame      \
6278                   -Wl,--wrap,swr_convert                \
6279                   -Wl,--wrap,avresample_convert         \
6280                   -Wl,--wrap,sws_scale ||
6281     disable xmm_clobber_test
6282
6283 check_ld "cc" <<EOF && enable proper_dce
6284 extern const int array[512];
6285 static inline int func(void) { return array[0]; }
6286 int main(void) { return 0; }
6287 EOF
6288
6289 if enabled proper_dce; then
6290     echo "X { local: *; };" > $TMPV
6291     if test_ldflags -Wl,${version_script},$TMPV; then
6292         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6293         quotes='""'
6294         check_cc <<EOF && enable symver_asm_label
6295 void ff_foo(void) __asm__ ("av_foo@VERSION");
6296 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6297 EOF
6298         check_cc <<EOF && enable symver_gnu_asm
6299 __asm__(".symver ff_foo,av_foo@VERSION");
6300 void ff_foo(void) {}
6301 EOF
6302     fi
6303 fi
6304
6305 if [ -z "$optflags" ]; then
6306     if enabled small; then
6307         optflags=$cflags_size
6308     elif enabled optimizations; then
6309         optflags=$cflags_speed
6310     else
6311         optflags=$cflags_noopt
6312     fi
6313 fi
6314
6315 if [ -z "$nvccflags" ]; then
6316     nvccflags=$nvccflags_default
6317 fi
6318
6319 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6320     nvccflags="$nvccflags -m64"
6321 else
6322     nvccflags="$nvccflags -m32"
6323 fi
6324
6325 check_optflags(){
6326     check_cflags "$@"
6327     enabled lto && check_ldflags "$@"
6328 }
6329
6330 check_optflags $optflags
6331 check_optflags -fno-math-errno
6332 check_optflags -fno-signed-zeros
6333
6334 if enabled lto; then
6335     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6336     check_cflags  -flto
6337     check_ldflags -flto $cpuflags
6338     disable inline_asm_direct_symbol_refs
6339 fi
6340
6341 enabled ftrapv && check_cflags -ftrapv
6342
6343 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6344 int x;
6345 EOF
6346
6347
6348 if enabled icc; then
6349     # Just warnings, no remarks
6350     check_cflags -w1
6351     # -wd: Disable following warnings
6352     # 144, 167, 556: -Wno-pointer-sign
6353     # 188: enumerated type mixed with another type
6354     # 1292: attribute "foo" ignored
6355     # 1419: external declaration in primary source file
6356     # 10006: ignoring unknown option -fno-signed-zeros
6357     # 10148: ignoring unknown option -Wno-parentheses
6358     # 10156: ignoring option '-W'; no argument required
6359     # 13200: No EMMS instruction before call to function
6360     # 13203: No EMMS instruction before return from function
6361     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6362     # 11030: Warning unknown option --as-needed
6363     # 10156: ignoring option '-export'; no argument required
6364     check_ldflags -wd10156,11030
6365     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6366     enable ebp_available
6367     # The test above does not test linking
6368     enabled lto && disable symver_asm_label
6369     if enabled x86_32; then
6370         icc_version=$($cc -dumpversion)
6371         test ${icc_version%%.*} -ge 11 &&
6372             check_cflags -falign-stack=maintain-16-byte ||
6373             disable aligned_stack
6374     fi
6375 elif enabled gcc; then
6376     check_optflags -fno-tree-vectorize
6377     check_cflags -Werror=format-security
6378     check_cflags -Werror=implicit-function-declaration
6379     check_cflags -Werror=missing-prototypes
6380     check_cflags -Werror=return-type
6381     check_cflags -Werror=vla
6382     check_cflags -Wformat
6383     check_cflags -fdiagnostics-color=auto
6384     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6385 elif enabled llvm_gcc; then
6386     check_cflags -mllvm -stack-alignment=16
6387 elif enabled clang; then
6388     check_cflags -mllvm -stack-alignment=16
6389     check_cflags -mstack-alignment=16
6390     check_cflags -Qunused-arguments
6391     check_cflags -Werror=implicit-function-declaration
6392     check_cflags -Werror=missing-prototypes
6393     check_cflags -Werror=return-type
6394 elif enabled cparser; then
6395     add_cflags -Wno-missing-variable-declarations
6396     add_cflags -Wno-empty-statement
6397 elif enabled armcc; then
6398     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6399     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6400     # 2523: use of inline assembly is deprecated
6401     add_cflags -W${armcc_opt},--diag_suppress=2523
6402     add_cflags -W${armcc_opt},--diag_suppress=1207
6403     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6404     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6405     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6406     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6407 elif enabled pathscale; then
6408     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6409     disable inline_asm
6410 elif enabled_any msvc icl; then
6411     enabled x86_32 && disable aligned_stack
6412     enabled_all x86_32 debug && add_cflags -Oy-
6413     enabled debug && add_ldflags -debug
6414     enable pragma_deprecated
6415     if enabled icl; then
6416         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6417         # (correctly) on icl 13.x.
6418         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6419             add_cflags -Qansi-alias
6420         # Some inline asm is not compilable in debug
6421         if enabled debug; then
6422             disable ebp_available
6423             disable ebx_available
6424         fi
6425     fi
6426     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6427     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6428     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6429     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6430     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6431     # MSVC 2013 and newer can handle it fine.
6432     # If this declspec fails, force including stdlib.h before the restrict redefinition
6433     # happens in config.h.
6434     if [ $_restrict != restrict ]; then
6435         check_cc <<EOF || add_cflags -FIstdlib.h
6436 __declspec($_restrict) void* foo(int);
6437 EOF
6438     fi
6439     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6440     # Issue has been fixed in MSVC v19.00.24218.
6441     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6442         check_cflags -d2SSAOptimizer-
6443     # enable utf-8 source processing on VS2015 U2 and newer
6444     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6445         add_cflags -utf-8
6446 fi
6447
6448 for pfx in "" host_; do
6449     varname=${pfx%_}cc_type
6450     eval "type=\$$varname"
6451     if [ "$type" = "msvc" ]; then
6452         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6453 static inline int foo(int a) { return a; }
6454 EOF
6455     fi
6456 done
6457
6458 case $as_type in
6459     clang)
6460         add_asflags -Qunused-arguments
6461     ;;
6462 esac
6463
6464 case $ld_type in
6465     clang)
6466         check_ldflags -Qunused-arguments
6467     ;;
6468 esac
6469
6470 enable frame_thread_encoder
6471
6472 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6473
6474 check_deps $CONFIG_LIST       \
6475            $CONFIG_EXTRA      \
6476            $HAVE_LIST         \
6477            $ALL_COMPONENTS    \
6478
6479 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"
6480
6481
6482 if test $target_os = "haiku"; then
6483     disable memalign
6484     disable posix_memalign
6485 fi
6486
6487 flatten_extralibs(){
6488     unset nested_entries
6489     list_name=$1
6490     eval list=\$${1}
6491     for entry in $list; do
6492         entry_copy=$entry
6493         resolve entry_copy
6494         append nested_entries $(filter '*_extralibs' $entry_copy)
6495         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6496         eval $entry="\$flat_entries"
6497     done
6498     append $list_name "$nested_entries"
6499
6500     resolve nested_entries
6501     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6502         flatten_extralibs $list_name
6503     fi
6504 }
6505
6506 flatten_extralibs_wrapper(){
6507     list_name=$1
6508     flatten_extralibs $list_name
6509     unique $list_name
6510     resolve $list_name
6511     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6512     eval printf \''%s'\' \""\$$list_name"\"
6513 }
6514
6515 for linkunit in $LIBRARY_LIST; do
6516     unset current_extralibs
6517     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6518     for comp in ${components}; do
6519         enabled $comp || continue
6520         comp_extralibs="${comp}_extralibs"
6521         append current_extralibs $comp_extralibs
6522     done
6523     eval prepend ${linkunit}_extralibs $current_extralibs
6524 done
6525
6526 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6527     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6528 done
6529
6530 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6531
6532 for thread in $THREADS_LIST; do
6533     if enabled $thread; then
6534         test -n "$thread_type" &&
6535             die "ERROR: Only one thread type must be selected." ||
6536             thread_type="$thread"
6537     fi
6538 done
6539
6540 if disabled stdatomic; then
6541     if enabled atomics_gcc; then
6542         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6543     elif enabled atomics_win32; then
6544         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6545     elif enabled atomics_suncc; then
6546         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6547     elif enabled pthreads; then
6548         add_compat atomics/pthread/stdatomic.o
6549         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6550     else
6551         enabled threads && die "Threading is enabled, but no atomics are available"
6552         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6553     fi
6554 fi
6555
6556 # Check if requested libraries were found.
6557 for lib in $AUTODETECT_LIBS; do
6558     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6559 done
6560
6561 enabled zlib && add_cppflags -DZLIB_CONST
6562
6563 # conditional library dependencies, in linking order
6564 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6565 enabled afir_filter         && prepend avfilter_deps "avcodec"
6566 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6567 enabled aresample_filter    && prepend avfilter_deps "swresample"
6568 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6569 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6570 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6571 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6572 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6573 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6574 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6575 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6576 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6577 enabled pan_filter          && prepend avfilter_deps "swresample"
6578 enabled pp_filter           && prepend avfilter_deps "postproc"
6579 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6580 enabled resample_filter && prepend avfilter_deps "avresample"
6581 enabled sab_filter          && prepend avfilter_deps "swscale"
6582 enabled scale_filter    && prepend avfilter_deps "swscale"
6583 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6584 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6585 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6586 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6587 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6588 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6589 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6590 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6591 enabled spp_filter          && prepend avfilter_deps "avcodec"
6592 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6593 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6594 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6595
6596 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6597
6598 #FIXME
6599 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6600
6601 enabled opus_decoder    && prepend avcodec_deps "swresample"
6602
6603 expand_deps(){
6604     lib_deps=${1}_deps
6605     eval "deps=\$$lib_deps"
6606     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6607     unique $lib_deps
6608 }
6609
6610 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6611 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6612
6613 map 'expand_deps $v' $LIBRARY_LIST
6614
6615 license="LGPL version 2.1 or later"
6616 if enabled nonfree; then
6617     license="nonfree and unredistributable"
6618 elif enabled gplv3; then
6619     license="GPL version 3 or later"
6620 elif enabled lgplv3; then
6621     license="LGPL version 3 or later"
6622 elif enabled gpl; then
6623     license="GPL version 2 or later"
6624 fi
6625
6626 if test "$quiet" != "yes"; then
6627
6628 echo "install prefix            $prefix"
6629 echo "source path               $source_path"
6630 echo "C compiler                $cc"
6631 echo "C library                 $libc_type"
6632 if test "$host_cc" != "$cc"; then
6633     echo "host C compiler           $host_cc"
6634     echo "host C library            $host_libc_type"
6635 fi
6636 echo "ARCH                      $arch ($cpu)"
6637 if test "$build_suffix" != ""; then
6638     echo "build suffix              $build_suffix"
6639 fi
6640 if test "$progs_suffix" != ""; then
6641     echo "progs suffix              $progs_suffix"
6642 fi
6643 if test "$extra_version" != ""; then
6644     echo "version string suffix     $extra_version"
6645 fi
6646 echo "big-endian                ${bigendian-no}"
6647 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6648 if enabled x86; then
6649     echo "standalone assembly       ${x86asm-no}"
6650     echo "x86 assembler             ${x86asmexe}"
6651     echo "MMX enabled               ${mmx-no}"
6652     echo "MMXEXT enabled            ${mmxext-no}"
6653     echo "3DNow! enabled            ${amd3dnow-no}"
6654     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6655     echo "SSE enabled               ${sse-no}"
6656     echo "SSSE3 enabled             ${ssse3-no}"
6657     echo "AESNI enabled             ${aesni-no}"
6658     echo "AVX enabled               ${avx-no}"
6659     echo "AVX2 enabled              ${avx2-no}"
6660     echo "XOP enabled               ${xop-no}"
6661     echo "FMA3 enabled              ${fma3-no}"
6662     echo "FMA4 enabled              ${fma4-no}"
6663     echo "i686 features enabled     ${i686-no}"
6664     echo "CMOV is fast              ${fast_cmov-no}"
6665     echo "EBX available             ${ebx_available-no}"
6666     echo "EBP available             ${ebp_available-no}"
6667 fi
6668 if enabled aarch64; then
6669     echo "NEON enabled              ${neon-no}"
6670     echo "VFP enabled               ${vfp-no}"
6671 fi
6672 if enabled arm; then
6673     echo "ARMv5TE enabled           ${armv5te-no}"
6674     echo "ARMv6 enabled             ${armv6-no}"
6675     echo "ARMv6T2 enabled           ${armv6t2-no}"
6676     echo "VFP enabled               ${vfp-no}"
6677     echo "NEON enabled              ${neon-no}"
6678     echo "THUMB enabled             ${thumb-no}"
6679 fi
6680 if enabled mips; then
6681     echo "MIPS FPU enabled          ${mipsfpu-no}"
6682     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6683     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6684     echo "MIPS MSA enabled          ${msa-no}"
6685     echo "LOONGSON MMI enabled      ${mmi-no}"
6686 fi
6687 if enabled ppc; then
6688     echo "AltiVec enabled           ${altivec-no}"
6689     echo "VSX enabled               ${vsx-no}"
6690     echo "POWER8 enabled            ${power8-no}"
6691     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6692     echo "dcbzl available           ${dcbzl-no}"
6693 fi
6694 echo "debug symbols             ${debug-no}"
6695 echo "strip symbols             ${stripping-no}"
6696 echo "optimize for size         ${small-no}"
6697 echo "optimizations             ${optimizations-no}"
6698 echo "static                    ${static-no}"
6699 echo "shared                    ${shared-no}"
6700 echo "postprocessing support    ${postproc-no}"
6701 echo "network support           ${network-no}"
6702 echo "threading support         ${thread_type-no}"
6703 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6704 echo "texi2html enabled         ${texi2html-no}"
6705 echo "perl enabled              ${perl-no}"
6706 echo "pod2man enabled           ${pod2man-no}"
6707 echo "makeinfo enabled          ${makeinfo-no}"
6708 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6709 test -n "$random_seed" &&
6710     echo "random seed               ${random_seed}"
6711 echo
6712
6713 echo "External libraries:"
6714 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6715 echo
6716
6717 echo "External libraries providing hardware acceleration:"
6718 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6719 echo
6720
6721 echo "Libraries:"
6722 print_enabled '' $LIBRARY_LIST | print_in_columns
6723 echo
6724
6725 echo "Programs:"
6726 print_enabled '' $PROGRAM_LIST | print_in_columns
6727 echo
6728
6729 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6730     echo "Enabled ${type}s:"
6731     eval list=\$$(toupper $type)_LIST
6732     print_enabled '_*' $list | print_in_columns
6733     echo
6734 done
6735
6736 if test -n "$ignore_tests"; then
6737     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6738     echo "Ignored FATE tests:"
6739     echo $ignore_tests | print_in_columns
6740     echo
6741 fi
6742
6743 echo "License: $license"
6744
6745 fi # test "$quiet" != "yes"
6746
6747 if test -n "$WARNINGS"; then
6748     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6749     enabled fatal_warnings && exit 1
6750 fi
6751
6752 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6753
6754 esc(){
6755     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6756 }
6757
6758 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6759
6760 enabled stripping || strip="echo skipping strip"
6761 enabled stripping || striptype=""
6762
6763 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6764
6765 cat > ffbuild/config.mak <<EOF
6766 # Automatically generated by configure - do not modify!
6767 ifndef FFMPEG_CONFIG_MAK
6768 FFMPEG_CONFIG_MAK=1
6769 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6770 prefix=$prefix
6771 LIBDIR=\$(DESTDIR)$libdir
6772 SHLIBDIR=\$(DESTDIR)$shlibdir
6773 INCDIR=\$(DESTDIR)$incdir
6774 BINDIR=\$(DESTDIR)$bindir
6775 DATADIR=\$(DESTDIR)$datadir
6776 DOCDIR=\$(DESTDIR)$docdir
6777 MANDIR=\$(DESTDIR)$mandir
6778 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6779 INSTALL_NAME_DIR=$install_name_dir
6780 SRC_PATH=$source_path
6781 SRC_LINK=$source_link
6782 ifndef MAIN_MAKEFILE
6783 SRC_PATH:=\$(SRC_PATH:.%=..%)
6784 endif
6785 CC_IDENT=$cc_ident
6786 ARCH=$arch
6787 INTRINSICS=$intrinsics
6788 EXTERN_PREFIX=$extern_prefix
6789 CC=$cc
6790 CXX=$cxx
6791 AS=$as
6792 OBJCC=$objcc
6793 LD=$ld
6794 DEPCC=$dep_cc
6795 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6796 DEPAS=$as
6797 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6798 X86ASM=$x86asmexe
6799 DEPX86ASM=$x86asmexe
6800 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6801 AR=$ar
6802 ARFLAGS=$arflags
6803 AR_O=$ar_o
6804 AR_CMD=$ar
6805 NM_CMD=$nm
6806 RANLIB=$ranlib
6807 STRIP=$strip
6808 STRIPTYPE=$striptype
6809 NVCC=$nvcc
6810 CP=cp -p
6811 LN_S=$ln_s
6812 CPPFLAGS=$CPPFLAGS
6813 CFLAGS=$CFLAGS
6814 CXXFLAGS=$CXXFLAGS
6815 OBJCFLAGS=$OBJCFLAGS
6816 ASFLAGS=$ASFLAGS
6817 NVCCFLAGS=$nvccflags
6818 AS_C=$AS_C
6819 AS_O=$AS_O
6820 OBJCC_C=$OBJCC_C
6821 OBJCC_E=$OBJCC_E
6822 OBJCC_O=$OBJCC_O
6823 CC_C=$CC_C
6824 CC_E=$CC_E
6825 CC_O=$CC_O
6826 CXX_C=$CXX_C
6827 CXX_O=$CXX_O
6828 NVCC_C=$NVCC_C
6829 NVCC_O=$NVCC_O
6830 LD_O=$LD_O
6831 X86ASM_O=$X86ASM_O
6832 LD_LIB=$LD_LIB
6833 LD_PATH=$LD_PATH
6834 WINDRES=$windres
6835 DEPWINDRES=$dep_cc
6836 DOXYGEN=$doxygen
6837 LDFLAGS=$LDFLAGS
6838 LDEXEFLAGS=$LDEXEFLAGS
6839 LDSOFLAGS=$LDSOFLAGS
6840 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6841 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6842 X86ASMFLAGS=$X86ASMFLAGS
6843 BUILDSUF=$build_suffix
6844 PROGSSUF=$progs_suffix
6845 FULLNAME=$FULLNAME
6846 LIBPREF=$LIBPREF
6847 LIBSUF=$LIBSUF
6848 LIBNAME=$LIBNAME
6849 SLIBPREF=$SLIBPREF
6850 SLIBSUF=$SLIBSUF
6851 EXESUF=$EXESUF
6852 EXTRA_VERSION=$extra_version
6853 CCDEP=$CCDEP
6854 CXXDEP=$CXXDEP
6855 CCDEP_FLAGS=$CCDEP_FLAGS
6856 ASDEP=$ASDEP
6857 ASDEP_FLAGS=$ASDEP_FLAGS
6858 X86ASMDEP=$X86ASMDEP
6859 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6860 CC_DEPFLAGS=$CC_DEPFLAGS
6861 AS_DEPFLAGS=$AS_DEPFLAGS
6862 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6863 HOSTCC=$host_cc
6864 HOSTLD=$host_ld
6865 HOSTCFLAGS=$host_cflags
6866 HOSTCPPFLAGS=$host_cppflags
6867 HOSTEXESUF=$HOSTEXESUF
6868 HOSTLDFLAGS=$host_ldflags
6869 HOSTEXTRALIBS=$host_extralibs
6870 DEPHOSTCC=$host_cc
6871 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6872 HOSTCCDEP=$HOSTCCDEP
6873 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6874 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6875 HOSTCC_C=$HOSTCC_C
6876 HOSTCC_O=$HOSTCC_O
6877 HOSTLD_O=$HOSTLD_O
6878 TARGET_EXEC=$target_exec $target_exec_args
6879 TARGET_PATH=$target_path
6880 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6881 CFLAGS-ffplay=${sdl2_cflags}
6882 CFLAGS_HEADERS=$CFLAGS_HEADERS
6883 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6884 EXTRALIBS=$extralibs
6885 COMPAT_OBJS=$compat_objs
6886 INSTALL=$install
6887 SLIBNAME=${SLIBNAME}
6888 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6889 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6890 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6891 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6892 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6893 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6894 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6895 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6896 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6897 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6898 NOREDZONE_FLAGS=$noredzone_flags
6899 LIBFUZZER_PATH=$libfuzzer_path
6900 IGNORE_TESTS=$ignore_tests
6901 EOF
6902
6903 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6904
6905 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6906     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6907 done
6908
6909 cat > $TMPH <<EOF
6910 /* Automatically generated by configure - do not modify! */
6911 #ifndef FFMPEG_CONFIG_H
6912 #define FFMPEG_CONFIG_H
6913 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6914 #define FFMPEG_LICENSE "$(c_escape $license)"
6915 #define CONFIG_THIS_YEAR 2017
6916 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6917 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6918 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6919 #define av_restrict $_restrict
6920 #define EXTERN_PREFIX "${extern_prefix}"
6921 #define EXTERN_ASM ${extern_prefix}
6922 #define BUILDSUF "$build_suffix"
6923 #define SLIBSUF "$SLIBSUF"
6924 #define HAVE_MMX2 HAVE_MMXEXT
6925 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6926 EOF
6927
6928 test -n "$assert_level" &&
6929     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6930
6931 test -n "$malloc_prefix" &&
6932     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6933
6934 if enabled x86asm; then
6935     append config_files $TMPASM
6936     cat > $TMPASM <<EOF
6937 ; Automatically generated by configure - do not modify!
6938 EOF
6939 fi
6940
6941 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6942
6943
6944 mkdir -p doc
6945 mkdir -p tests
6946 mkdir -p tests/api
6947 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6948
6949 print_config ARCH_   "$config_files" $ARCH_LIST
6950 print_config HAVE_   "$config_files" $HAVE_LIST
6951 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6952                                      $CONFIG_EXTRA      \
6953                                      $ALL_COMPONENTS    \
6954
6955 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6956 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6957
6958 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6959 cp_if_changed $TMPH config.h
6960 touch ffbuild/.config
6961
6962 enabled x86asm && cp_if_changed $TMPASM config.asm
6963
6964 cat > $TMPH <<EOF
6965 /* Generated by ffmpeg configure */
6966 #ifndef AVUTIL_AVCONFIG_H
6967 #define AVUTIL_AVCONFIG_H
6968 EOF
6969
6970 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6971
6972 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6973
6974 cp_if_changed $TMPH libavutil/avconfig.h
6975
6976 # generate the lists of enabled components
6977 print_enabled_components(){
6978     file=$1
6979     struct_name=$2
6980     name=$3
6981     shift 3
6982     echo "static const $struct_name * const $name[] = {" > $TMPH
6983     for c in $*; do
6984         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6985     done
6986     echo "    NULL };" >> $TMPH
6987     cp_if_changed $TMPH $file
6988 }
6989
6990 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6991 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6992
6993 # Settings for pkg-config files
6994
6995 cat > $TMPH <<EOF
6996 # Automatically generated by configure - do not modify!
6997 shared=$shared
6998 build_suffix=$build_suffix
6999 prefix=$prefix
7000 libdir=$libdir
7001 incdir=$incdir
7002 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7003 source_path=${source_path}
7004 LIBPREF=${LIBPREF}
7005 LIBSUF=${LIBSUF}
7006 extralibs_avutil="$avutil_extralibs"
7007 extralibs_avcodec="$avcodec_extralibs"
7008 extralibs_avformat="$avformat_extralibs"
7009 extralibs_avdevice="$avdevice_extralibs"
7010 extralibs_avfilter="$avfilter_extralibs"
7011 extralibs_avresample="$avresample_extralibs"
7012 extralibs_postproc="$postproc_extralibs"
7013 extralibs_swscale="$swscale_extralibs"
7014 extralibs_swresample="$swresample_extralibs"
7015 EOF
7016
7017 for lib in $LIBRARY_LIST; do
7018     lib_deps="$(eval echo \$${lib}_deps)"
7019     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7020 done
7021
7022 cp_if_changed $TMPH ffbuild/config.sh