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_nvdec_hwaccel_deps="nvdec"
2708 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2709 mpeg1_vdpau_hwaccel_deps="vdpau"
2710 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2711 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2712 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2713 mpeg1_xvmc_hwaccel_deps="xvmc"
2714 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2715 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2716 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2717 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2718 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2719 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2720 mpeg2_dxva2_hwaccel_deps="dxva2"
2721 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2722 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2723 mpeg2_mmal_hwaccel_deps="mmal"
2724 mpeg2_nvdec_hwaccel_deps="nvdec"
2725 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_qsv_hwaccel_deps="libmfx"
2727 mpeg2_vaapi_hwaccel_deps="vaapi"
2728 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_vdpau_hwaccel_deps="vdpau"
2730 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2731 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2732 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2733 mpeg2_xvmc_hwaccel_deps="xvmc"
2734 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2735 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2736 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2737 mpeg4_mmal_hwaccel_deps="mmal"
2738 mpeg4_vaapi_hwaccel_deps="vaapi"
2739 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2740 mpeg4_vdpau_hwaccel_deps="vdpau"
2741 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2742 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2743 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2744 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2745 vc1_d3d11va_hwaccel_deps="d3d11va"
2746 vc1_d3d11va_hwaccel_select="vc1_decoder"
2747 vc1_d3d11va2_hwaccel_deps="d3d11va"
2748 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2749 vc1_dxva2_hwaccel_deps="dxva2"
2750 vc1_dxva2_hwaccel_select="vc1_decoder"
2751 vc1_mmal_hwaccel_deps="mmal"
2752 vc1_nvdec_hwaccel_deps="nvdec"
2753 vc1_nvdec_hwaccel_select="vc1_decoder"
2754 vc1_qsv_hwaccel_deps="libmfx"
2755 vc1_vaapi_hwaccel_deps="vaapi"
2756 vc1_vaapi_hwaccel_select="vc1_decoder"
2757 vc1_vdpau_hwaccel_deps="vdpau"
2758 vc1_vdpau_hwaccel_select="vc1_decoder"
2759 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2760 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2761 vp8_mediacodec_hwaccel_deps="mediacodec"
2762 vp8_qsv_hwaccel_deps="libmfx"
2763 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2764 vp9_d3d11va_hwaccel_select="vp9_decoder"
2765 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2766 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2767 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2768 vp9_dxva2_hwaccel_select="vp9_decoder"
2769 vp9_mediacodec_hwaccel_deps="mediacodec"
2770 vp9_nvdec_hwaccel_deps="nvdec"
2771 vp9_nvdec_hwaccel_select="vp9_decoder"
2772 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2773 vp9_vaapi_hwaccel_select="vp9_decoder"
2774 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2775 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2776 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2777 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2778 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2779 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2780
2781 # hardware-accelerated codecs
2782 omx_deps="libdl pthreads"
2783 omx_rpi_select="omx"
2784 qsv_deps="libmfx"
2785 qsvdec_select="qsv"
2786 qsvenc_select="qsv"
2787 qsvvpp_select="qsv"
2788 vaapi_encode_deps="vaapi"
2789 v4l2_m2m_deps_any="linux_videodev2_h"
2790
2791 hwupload_cuda_filter_deps="cuda"
2792 scale_npp_filter_deps="cuda libnpp"
2793 scale_cuda_filter_deps="cuda_sdk"
2794 thumbnail_cuda_filter_deps="cuda_sdk"
2795
2796 nvenc_deps="cuda"
2797 nvenc_deps_any="libdl LoadLibrary"
2798 nvenc_encoder_deps="nvenc"
2799
2800 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2801 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2802 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2803 h264_cuvid_decoder_deps="cuvid"
2804 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2805 h264_mediacodec_decoder_deps="mediacodec"
2806 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2807 h264_mmal_decoder_deps="mmal"
2808 h264_nvenc_encoder_deps="nvenc"
2809 h264_omx_encoder_deps="omx"
2810 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2811 h264_qsv_encoder_select="qsvenc"
2812 h264_rkmpp_decoder_deps="rkmpp"
2813 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2814 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2815 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2816 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2817 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2818 hevc_cuvid_decoder_deps="cuvid"
2819 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2820 hevc_mediacodec_decoder_deps="mediacodec"
2821 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2822 hevc_nvenc_encoder_deps="nvenc"
2823 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2824 hevc_qsv_encoder_select="hevcparse qsvenc"
2825 hevc_rkmpp_decoder_deps="rkmpp"
2826 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2827 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2828 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2829 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2830 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2831 mjpeg_cuvid_decoder_deps="cuvid"
2832 mjpeg_qsv_encoder_deps="libmfx"
2833 mjpeg_qsv_encoder_select="qsvenc"
2834 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2835 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2836 mpeg1_cuvid_decoder_deps="cuvid"
2837 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2838 mpeg2_crystalhd_decoder_select="crystalhd"
2839 mpeg2_cuvid_decoder_deps="cuvid"
2840 mpeg2_mmal_decoder_deps="mmal"
2841 mpeg2_mediacodec_decoder_deps="mediacodec"
2842 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2843 mpeg2_qsv_encoder_select="qsvenc"
2844 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2845 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2846 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2847 mpeg4_crystalhd_decoder_select="crystalhd"
2848 mpeg4_cuvid_decoder_deps="cuvid"
2849 mpeg4_mediacodec_decoder_deps="mediacodec"
2850 mpeg4_mmal_decoder_deps="mmal"
2851 mpeg4_omx_encoder_deps="omx"
2852 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2853 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2854 msmpeg4_crystalhd_decoder_select="crystalhd"
2855 nvenc_h264_encoder_select="h264_nvenc_encoder"
2856 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2857 vc1_crystalhd_decoder_select="crystalhd"
2858 vc1_cuvid_decoder_deps="cuvid"
2859 vc1_mmal_decoder_deps="mmal"
2860 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2861 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2862 vp8_cuvid_decoder_deps="cuvid"
2863 vp8_mediacodec_decoder_deps="mediacodec"
2864 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2865 vp8_rkmpp_decoder_deps="rkmpp"
2866 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2867 vp8_vaapi_encoder_select="vaapi_encode"
2868 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2869 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2870 vp9_cuvid_decoder_deps="cuvid"
2871 vp9_mediacodec_decoder_deps="mediacodec"
2872 vp9_rkmpp_decoder_deps="rkmpp"
2873 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2874 vp9_vaapi_encoder_select="vaapi_encode"
2875 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2876 wmv3_crystalhd_decoder_select="crystalhd"
2877
2878 # parsers
2879 aac_parser_select="adts_header"
2880 h264_parser_select="golomb h264dsp h264parse"
2881 hevc_parser_select="hevcparse"
2882 mpegaudio_parser_select="mpegaudioheader"
2883 mpegvideo_parser_select="mpegvideo"
2884 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2885 vc1_parser_select="vc1dsp"
2886
2887 # bitstream_filters
2888 aac_adtstoasc_bsf_select="adts_header"
2889 h264_metadata_bsf_select="cbs_h264"
2890 h264_redundant_pps_bsf_select="cbs_h264"
2891 hevc_metadata_bsf_select="cbs_h265"
2892 mjpeg2jpeg_bsf_select="jpegtables"
2893 mpeg2_metadata_bsf_select="cbs_mpeg2"
2894 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2895
2896 # external libraries
2897 aac_at_decoder_deps="audiotoolbox"
2898 ac3_at_decoder_deps="audiotoolbox"
2899 ac3_at_decoder_select="ac3_parser"
2900 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2901 alac_at_decoder_deps="audiotoolbox"
2902 amr_nb_at_decoder_deps="audiotoolbox"
2903 avisynth_deps_any="libdl LoadLibrary"
2904 avisynth_demuxer_deps="avisynth"
2905 avisynth_demuxer_select="riffdec"
2906 eac3_at_decoder_deps="audiotoolbox"
2907 eac3_at_decoder_select="ac3_parser"
2908 gsm_ms_at_decoder_deps="audiotoolbox"
2909 ilbc_at_decoder_deps="audiotoolbox"
2910 mp1_at_decoder_deps="audiotoolbox"
2911 mp2_at_decoder_deps="audiotoolbox"
2912 mp3_at_decoder_deps="audiotoolbox"
2913 mp1_at_decoder_select="mpegaudioheader"
2914 mp2_at_decoder_select="mpegaudioheader"
2915 mp3_at_decoder_select="mpegaudioheader"
2916 pcm_alaw_at_decoder_deps="audiotoolbox"
2917 pcm_mulaw_at_decoder_deps="audiotoolbox"
2918 qdmc_at_decoder_deps="audiotoolbox"
2919 qdm2_at_decoder_deps="audiotoolbox"
2920 aac_at_encoder_deps="audiotoolbox"
2921 aac_at_encoder_select="audio_frame_queue"
2922 alac_at_encoder_deps="audiotoolbox"
2923 alac_at_encoder_select="audio_frame_queue"
2924 ilbc_at_encoder_deps="audiotoolbox"
2925 ilbc_at_encoder_select="audio_frame_queue"
2926 pcm_alaw_at_encoder_deps="audiotoolbox"
2927 pcm_alaw_at_encoder_select="audio_frame_queue"
2928 pcm_mulaw_at_encoder_deps="audiotoolbox"
2929 pcm_mulaw_at_encoder_select="audio_frame_queue"
2930 chromaprint_muxer_deps="chromaprint"
2931 h264_videotoolbox_encoder_deps="pthreads"
2932 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2933 hevc_videotoolbox_encoder_deps="pthreads"
2934 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2935 libcelt_decoder_deps="libcelt"
2936 libfdk_aac_decoder_deps="libfdk_aac"
2937 libfdk_aac_encoder_deps="libfdk_aac"
2938 libfdk_aac_encoder_select="audio_frame_queue"
2939 libgme_demuxer_deps="libgme"
2940 libgsm_decoder_deps="libgsm"
2941 libgsm_encoder_deps="libgsm"
2942 libgsm_ms_decoder_deps="libgsm"
2943 libgsm_ms_encoder_deps="libgsm"
2944 libilbc_decoder_deps="libilbc"
2945 libilbc_encoder_deps="libilbc"
2946 libkvazaar_encoder_deps="libkvazaar"
2947 libmodplug_demuxer_deps="libmodplug"
2948 libmp3lame_encoder_deps="libmp3lame"
2949 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2950 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2951 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2952 libopencore_amrnb_encoder_select="audio_frame_queue"
2953 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2954 libopenh264_decoder_deps="libopenh264"
2955 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2956 libopenh264_encoder_deps="libopenh264"
2957 libopenjpeg_decoder_deps="libopenjpeg"
2958 libopenjpeg_encoder_deps="libopenjpeg"
2959 libopenmpt_demuxer_deps="libopenmpt"
2960 libopus_decoder_deps="libopus"
2961 libopus_encoder_deps="libopus"
2962 libopus_encoder_select="audio_frame_queue"
2963 librsvg_decoder_deps="librsvg"
2964 libshine_encoder_deps="libshine"
2965 libshine_encoder_select="audio_frame_queue"
2966 libspeex_decoder_deps="libspeex"
2967 libspeex_encoder_deps="libspeex"
2968 libspeex_encoder_select="audio_frame_queue"
2969 libtheora_encoder_deps="libtheora"
2970 libtwolame_encoder_deps="libtwolame"
2971 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2972 libvorbis_decoder_deps="libvorbis"
2973 libvorbis_encoder_deps="libvorbis libvorbisenc"
2974 libvorbis_encoder_select="audio_frame_queue"
2975 libvpx_vp8_decoder_deps="libvpx"
2976 libvpx_vp8_encoder_deps="libvpx"
2977 libvpx_vp9_decoder_deps="libvpx"
2978 libvpx_vp9_encoder_deps="libvpx"
2979 libwavpack_encoder_deps="libwavpack"
2980 libwavpack_encoder_select="audio_frame_queue"
2981 libwebp_encoder_deps="libwebp"
2982 libwebp_anim_encoder_deps="libwebp"
2983 libx262_encoder_deps="libx262"
2984 libx264_encoder_deps="libx264"
2985 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2986 libx264rgb_encoder_select="libx264_encoder"
2987 libx265_encoder_deps="libx265"
2988 libxavs_encoder_deps="libxavs"
2989 libxvid_encoder_deps="libxvid"
2990 libzvbi_teletext_decoder_deps="libzvbi"
2991 videotoolbox_suggest="coreservices"
2992 videotoolbox_deps="corefoundation coremedia corevideo"
2993 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2994
2995 # demuxers / muxers
2996 ac3_demuxer_select="ac3_parser"
2997 aiff_muxer_select="iso_media"
2998 asf_demuxer_select="riffdec"
2999 asf_o_demuxer_select="riffdec"
3000 asf_muxer_select="riffenc"
3001 asf_stream_muxer_select="asf_muxer"
3002 avi_demuxer_select="iso_media riffdec exif"
3003 avi_muxer_select="riffenc"
3004 caf_demuxer_select="iso_media riffdec"
3005 caf_muxer_select="iso_media"
3006 dash_muxer_select="mp4_muxer"
3007 dash_demuxer_deps="libxml2"
3008 dirac_demuxer_select="dirac_parser"
3009 dts_demuxer_select="dca_parser"
3010 dtshd_demuxer_select="dca_parser"
3011 dv_demuxer_select="dvprofile"
3012 dv_muxer_select="dvprofile"
3013 dxa_demuxer_select="riffdec"
3014 eac3_demuxer_select="ac3_parser"
3015 f4v_muxer_select="mov_muxer"
3016 fifo_muxer_deps="threads"
3017 flac_demuxer_select="flac_parser"
3018 hds_muxer_select="flv_muxer"
3019 hls_muxer_select="mpegts_muxer"
3020 hls_muxer_suggest="gcrypt openssl"
3021 image2_alias_pix_demuxer_select="image2_demuxer"
3022 image2_brender_pix_demuxer_select="image2_demuxer"
3023 ipod_muxer_select="mov_muxer"
3024 ismv_muxer_select="mov_muxer"
3025 matroska_audio_muxer_select="matroska_muxer"
3026 matroska_demuxer_select="iso_media riffdec"
3027 matroska_demuxer_suggest="bzlib lzo zlib"
3028 matroska_muxer_select="iso_media riffenc"
3029 mmf_muxer_select="riffenc"
3030 mov_demuxer_select="iso_media riffdec"
3031 mov_demuxer_suggest="zlib"
3032 mov_muxer_select="iso_media riffenc rtpenc_chain"
3033 mp3_demuxer_select="mpegaudio_parser"
3034 mp3_muxer_select="mpegaudioheader"
3035 mp4_muxer_select="mov_muxer"
3036 mpegts_demuxer_select="iso_media"
3037 mpegts_muxer_select="adts_muxer latm_muxer"
3038 mpegtsraw_demuxer_select="mpegts_demuxer"
3039 mxf_d10_muxer_select="mxf_muxer"
3040 mxf_opatom_muxer_select="mxf_muxer"
3041 nut_muxer_select="riffenc"
3042 nuv_demuxer_select="riffdec"
3043 oga_muxer_select="ogg_muxer"
3044 ogg_demuxer_select="dirac_parse"
3045 ogv_muxer_select="ogg_muxer"
3046 opus_muxer_select="ogg_muxer"
3047 psp_muxer_select="mov_muxer"
3048 rtp_demuxer_select="sdp_demuxer"
3049 rtp_muxer_select="golomb"
3050 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3051 rtsp_demuxer_select="http_protocol rtpdec"
3052 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3053 sap_demuxer_select="sdp_demuxer"
3054 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3055 sdp_demuxer_select="rtpdec"
3056 smoothstreaming_muxer_select="ismv_muxer"
3057 spdif_demuxer_select="adts_header"
3058 spdif_muxer_select="adts_header"
3059 spx_muxer_select="ogg_muxer"
3060 swf_demuxer_suggest="zlib"
3061 tak_demuxer_select="tak_parser"
3062 tg2_muxer_select="mov_muxer"
3063 tgp_muxer_select="mov_muxer"
3064 vobsub_demuxer_select="mpegps_demuxer"
3065 w64_demuxer_select="wav_demuxer"
3066 w64_muxer_select="wav_muxer"
3067 wav_demuxer_select="riffdec"
3068 wav_muxer_select="riffenc"
3069 webm_muxer_select="iso_media riffenc"
3070 webm_dash_manifest_demuxer_select="matroska_demuxer"
3071 wtv_demuxer_select="mpegts_demuxer riffdec"
3072 wtv_muxer_select="mpegts_muxer riffenc"
3073 xmv_demuxer_select="riffdec"
3074 xwma_demuxer_select="riffdec"
3075
3076 # indevs / outdevs
3077 alsa_indev_deps="alsa"
3078 alsa_outdev_deps="alsa"
3079 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3080 avfoundation_indev_suggest="coregraphics applicationservices"
3081 avfoundation_indev_extralibs="-framework Foundation"
3082 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3083 caca_outdev_deps="libcaca"
3084 decklink_deps_any="libdl LoadLibrary"
3085 decklink_indev_deps="decklink threads"
3086 decklink_indev_extralibs="-lstdc++"
3087 decklink_outdev_deps="decklink threads"
3088 decklink_outdev_extralibs="-lstdc++"
3089 libndi_newtek_indev_deps="libndi_newtek"
3090 libndi_newtek_indev_extralibs="-lndi"
3091 libndi_newtek_outdev_deps="libndi_newtek"
3092 libndi_newtek_outdev_extralibs="-lndi"
3093 dshow_indev_deps="IBaseFilter"
3094 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3095 fbdev_indev_deps="linux_fb_h"
3096 fbdev_outdev_deps="linux_fb_h"
3097 gdigrab_indev_deps="CreateDIBSection"
3098 gdigrab_indev_extralibs="-lgdi32"
3099 gdigrab_indev_select="bmp_decoder"
3100 iec61883_indev_deps="libiec61883"
3101 jack_indev_deps="libjack"
3102 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3103 kmsgrab_indev_deps="libdrm"
3104 lavfi_indev_deps="avfilter"
3105 libcdio_indev_deps="libcdio"
3106 libdc1394_indev_deps="libdc1394"
3107 openal_indev_deps="openal"
3108 opengl_outdev_deps="opengl"
3109 oss_indev_deps_any="sys_soundcard_h"
3110 oss_outdev_deps_any="sys_soundcard_h"
3111 pulse_indev_deps="libpulse"
3112 pulse_outdev_deps="libpulse"
3113 sdl2_outdev_deps="sdl2"
3114 sndio_indev_deps="sndio"
3115 sndio_outdev_deps="sndio"
3116 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3117 v4l2_indev_suggest="libv4l2"
3118 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3119 v4l2_outdev_suggest="libv4l2"
3120 vfwcap_indev_deps="vfw32 vfwcap_defines"
3121 xcbgrab_indev_deps="libxcb"
3122 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3123 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3124 xv_outdev_extralibs="-lXv -lX11 -lXext"
3125
3126 # protocols
3127 async_protocol_deps="threads"
3128 bluray_protocol_deps="libbluray"
3129 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3130 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3131 ffrtmpcrypt_protocol_select="tcp_protocol"
3132 ffrtmphttp_protocol_conflict="librtmp_protocol"
3133 ffrtmphttp_protocol_select="http_protocol"
3134 ftp_protocol_select="tcp_protocol"
3135 gopher_protocol_select="network"
3136 http_protocol_select="tcp_protocol"
3137 http_protocol_suggest="zlib"
3138 httpproxy_protocol_select="tcp_protocol"
3139 httpproxy_protocol_suggest="zlib"
3140 https_protocol_select="tls_protocol"
3141 https_protocol_suggest="zlib"
3142 icecast_protocol_select="http_protocol"
3143 librtmp_protocol_deps="librtmp"
3144 librtmpe_protocol_deps="librtmp"
3145 librtmps_protocol_deps="librtmp"
3146 librtmpt_protocol_deps="librtmp"
3147 librtmpte_protocol_deps="librtmp"
3148 libsmbclient_protocol_deps="libsmbclient gplv3"
3149 libssh_protocol_deps="libssh"
3150 mmsh_protocol_select="http_protocol"
3151 mmst_protocol_select="network"
3152 rtmp_protocol_conflict="librtmp_protocol"
3153 rtmp_protocol_select="tcp_protocol"
3154 rtmp_protocol_suggest="zlib"
3155 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3156 rtmpe_protocol_suggest="zlib"
3157 rtmps_protocol_conflict="librtmp_protocol"
3158 rtmps_protocol_select="tls_protocol"
3159 rtmps_protocol_suggest="zlib"
3160 rtmpt_protocol_select="ffrtmphttp_protocol"
3161 rtmpt_protocol_suggest="zlib"
3162 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3163 rtmpte_protocol_suggest="zlib"
3164 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3165 rtmpts_protocol_suggest="zlib"
3166 rtp_protocol_select="udp_protocol"
3167 schannel_conflict="openssl gnutls"
3168 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3169 sctp_protocol_select="network"
3170 securetransport_conflict="openssl gnutls"
3171 srtp_protocol_select="rtp_protocol srtp"
3172 tcp_protocol_select="network"
3173 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3174 tls_protocol_select="tcp_protocol"
3175 udp_protocol_select="network"
3176 udplite_protocol_select="network"
3177 unix_protocol_deps="sys_un_h"
3178 unix_protocol_select="network"
3179
3180 # filters
3181 afftfilt_filter_deps="avcodec"
3182 afftfilt_filter_select="fft"
3183 afir_filter_deps="avcodec"
3184 afir_filter_select="fft"
3185 amovie_filter_deps="avcodec avformat"
3186 aresample_filter_deps="swresample"
3187 ass_filter_deps="libass"
3188 atempo_filter_deps="avcodec"
3189 atempo_filter_select="rdft"
3190 azmq_filter_deps="libzmq"
3191 blackframe_filter_deps="gpl"
3192 boxblur_filter_deps="gpl"
3193 bs2b_filter_deps="libbs2b"
3194 colormatrix_filter_deps="gpl"
3195 coreimage_filter_deps="coreimage appkit"
3196 coreimage_filter_extralibs="-framework OpenGL"
3197 coreimagesrc_filter_deps="coreimage appkit"
3198 coreimagesrc_filter_extralibs="-framework OpenGL"
3199 cover_rect_filter_deps="avcodec avformat gpl"
3200 cropdetect_filter_deps="gpl"
3201 deinterlace_qsv_filter_deps="libmfx"
3202 deinterlace_vaapi_filter_deps="vaapi"
3203 delogo_filter_deps="gpl"
3204 deshake_filter_select="pixelutils"
3205 deshake_filter_suggest="opencl"
3206 drawtext_filter_deps="libfreetype"
3207 drawtext_filter_suggest="libfontconfig libfribidi"
3208 elbg_filter_deps="avcodec"
3209 eq_filter_deps="gpl"
3210 fftfilt_filter_deps="avcodec"
3211 fftfilt_filter_select="rdft"
3212 find_rect_filter_deps="avcodec avformat gpl"
3213 firequalizer_filter_deps="avcodec"
3214 firequalizer_filter_select="rdft"
3215 flite_filter_deps="libflite"
3216 framerate_filter_select="pixelutils"
3217 frei0r_filter_deps="frei0r libdl"
3218 frei0r_src_filter_deps="frei0r libdl"
3219 fspp_filter_deps="gpl"
3220 geq_filter_deps="gpl"
3221 histeq_filter_deps="gpl"
3222 hqdn3d_filter_deps="gpl"
3223 interlace_filter_deps="gpl"
3224 kerndeint_filter_deps="gpl"
3225 ladspa_filter_deps="ladspa libdl"
3226 mcdeint_filter_deps="avcodec gpl"
3227 movie_filter_deps="avcodec avformat"
3228 mpdecimate_filter_deps="gpl"
3229 mpdecimate_filter_select="pixelutils"
3230 mptestsrc_filter_deps="gpl"
3231 negate_filter_deps="lut_filter"
3232 nnedi_filter_deps="gpl"
3233 ocr_filter_deps="libtesseract"
3234 ocv_filter_deps="libopencv"
3235 overlay_qsv_filter_deps="libmfx"
3236 overlay_qsv_filter_select="qsvvpp"
3237 owdenoise_filter_deps="gpl"
3238 pan_filter_deps="swresample"
3239 perspective_filter_deps="gpl"
3240 phase_filter_deps="gpl"
3241 pp7_filter_deps="gpl"
3242 pp_filter_deps="gpl postproc"
3243 pullup_filter_deps="gpl"
3244 removelogo_filter_deps="avcodec avformat swscale"
3245 repeatfields_filter_deps="gpl"
3246 resample_filter_deps="avresample"
3247 rubberband_filter_deps="librubberband"
3248 sab_filter_deps="gpl swscale"
3249 scale2ref_filter_deps="swscale"
3250 scale_filter_deps="swscale"
3251 scale_qsv_filter_deps="libmfx"
3252 select_filter_select="pixelutils"
3253 showcqt_filter_deps="avcodec avformat swscale"
3254 showcqt_filter_suggest="libfontconfig libfreetype"
3255 showcqt_filter_select="fft"
3256 showfreqs_filter_deps="avcodec"
3257 showfreqs_filter_select="fft"
3258 showspectrum_filter_deps="avcodec"
3259 showspectrum_filter_select="fft"
3260 showspectrumpic_filter_deps="avcodec"
3261 showspectrumpic_filter_select="fft"
3262 signature_filter_deps="gpl avcodec avformat"
3263 smartblur_filter_deps="gpl swscale"
3264 sofalizer_filter_deps="libmysofa avcodec"
3265 sofalizer_filter_select="fft"
3266 spectrumsynth_filter_deps="avcodec"
3267 spectrumsynth_filter_select="fft"
3268 spp_filter_deps="gpl avcodec"
3269 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3270 stereo3d_filter_deps="gpl"
3271 subtitles_filter_deps="avformat avcodec libass"
3272 super2xsai_filter_deps="gpl"
3273 pixfmts_super2xsai_test_deps="super2xsai_filter"
3274 tinterlace_filter_deps="gpl"
3275 tinterlace_merge_test_deps="tinterlace_filter"
3276 tinterlace_pad_test_deps="tinterlace_filter"
3277 tonemap_filter_deps="const_nan"
3278 uspp_filter_deps="gpl avcodec"
3279 unsharp_filter_suggest="opencl"
3280 vaguedenoiser_filter_deps="gpl"
3281 vidstabdetect_filter_deps="libvidstab"
3282 vidstabtransform_filter_deps="libvidstab"
3283 libvmaf_filter_deps="libvmaf"
3284 zmq_filter_deps="libzmq"
3285 zoompan_filter_deps="swscale"
3286 zscale_filter_deps="libzimg const_nan"
3287 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3288 vpp_qsv_filter_deps="libmfx"
3289 vpp_qsv_filter_select="qsvvpp"
3290
3291 # examples
3292 avio_dir_cmd_deps="avformat avutil"
3293 avio_reading_deps="avformat avcodec avutil"
3294 decode_audio_example_deps="avcodec avutil"
3295 decode_video_example_deps="avcodec avutil"
3296 demuxing_decoding_example_deps="avcodec avformat avutil"
3297 encode_audio_example_deps="avcodec avutil"
3298 encode_video_example_deps="avcodec avutil"
3299 extract_mvs_example_deps="avcodec avformat avutil"
3300 filter_audio_example_deps="avfilter avutil"
3301 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3302 filtering_video_example_deps="avfilter avcodec avformat avutil"
3303 http_multiclient_example_deps="avformat avutil fork"
3304 hw_decode_example_deps="avcodec avformat avutil"
3305 metadata_example_deps="avformat avutil"
3306 muxing_example_deps="avcodec avformat avutil swscale"
3307 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3308 remuxing_example_deps="avcodec avformat avutil"
3309 resampling_audio_example_deps="avutil swresample"
3310 scaling_video_example_deps="avutil swscale"
3311 transcode_aac_example_deps="avcodec avformat swresample"
3312 transcoding_example_deps="avfilter avcodec avformat avutil"
3313
3314 # EXTRALIBS_LIST
3315 cpu_init_extralibs="pthreads_extralibs"
3316 cws2fws_extralibs="zlib_extralibs"
3317
3318 # libraries, in linking order
3319 avcodec_deps="avutil"
3320 avcodec_suggest="libm"
3321 avcodec_select="null_bsf"
3322 avdevice_deps="avformat avcodec avutil"
3323 avdevice_suggest="libm"
3324 avfilter_deps="avutil"
3325 avfilter_suggest="libm"
3326 avformat_deps="avcodec avutil"
3327 avformat_suggest="libm network zlib"
3328 avresample_deps="avutil"
3329 avresample_suggest="libm"
3330 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3331 postproc_deps="avutil gpl"
3332 postproc_suggest="libm"
3333 swresample_deps="avutil"
3334 swresample_suggest="libm libsoxr"
3335 swscale_deps="avutil"
3336 swscale_suggest="libm"
3337
3338 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3339 avfilter_extralibs="pthreads_extralibs"
3340 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3341
3342 # programs
3343 ffmpeg_deps="avcodec avfilter avformat swresample"
3344 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3345                null_filter
3346                trim_filter"
3347 ffmpeg_suggest="ole32 psapi shell32"
3348 ffplay_deps="avcodec avformat swscale swresample sdl2"
3349 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3350 ffplay_suggest="shell32"
3351 ffprobe_deps="avcodec avformat"
3352 ffprobe_suggest="shell32"
3353 ffserver_deps="avformat fork sarestart"
3354 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3355
3356 # documentation
3357 podpages_deps="perl"
3358 manpages_deps="perl pod2man"
3359 htmlpages_deps="perl"
3360 htmlpages_deps_any="makeinfo_html texi2html"
3361 txtpages_deps="perl makeinfo"
3362 doc_deps_any="manpages htmlpages podpages txtpages"
3363
3364 # default parameters
3365
3366 logfile="ffbuild/config.log"
3367
3368 # installation paths
3369 prefix_default="/usr/local"
3370 bindir_default='${prefix}/bin'
3371 datadir_default='${prefix}/share/ffmpeg'
3372 docdir_default='${prefix}/share/doc/ffmpeg'
3373 incdir_default='${prefix}/include'
3374 libdir_default='${prefix}/lib'
3375 mandir_default='${prefix}/share/man'
3376
3377 # toolchain
3378 ar_default="ar"
3379 cc_default="gcc"
3380 cxx_default="g++"
3381 host_cc_default="gcc"
3382 doxygen_default="doxygen"
3383 install="install"
3384 ln_s_default="ln -s -f"
3385 nm_default="nm -g"
3386 pkg_config_default=pkg-config
3387 ranlib_default="ranlib"
3388 strip_default="strip"
3389 version_script='--version-script'
3390 objformat="elf32"
3391 x86asmexe_default="nasm"
3392 windres_default="windres"
3393 nvcc_default="nvcc"
3394 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3395 striptype="direct"
3396
3397 # OS
3398 target_os_default=$(tolower $(uname -s))
3399 host_os=$target_os_default
3400
3401 # machine
3402 if test "$target_os_default" = aix; then
3403     arch_default=$(uname -p)
3404     strip_default="strip -X32_64"
3405 else
3406     arch_default=$(uname -m)
3407 fi
3408 cpu="generic"
3409 intrinsics="none"
3410
3411 # configurable options
3412 enable $PROGRAM_LIST
3413 enable $DOCUMENT_LIST
3414 enable $EXAMPLE_LIST
3415 enable $(filter_out avresample $LIBRARY_LIST)
3416 enable stripping
3417
3418 enable asm
3419 enable debug
3420 enable doc
3421 enable faan faandct faanidct
3422 enable optimizations
3423 enable runtime_cpudetect
3424 enable safe_bitstream_reader
3425 enable static
3426 enable swscale_alpha
3427 enable valgrind_backtrace
3428
3429 sws_max_filter_size_default=256
3430 set_default sws_max_filter_size
3431
3432 # internal components are enabled by default
3433 enable $EXTRALIBS_LIST
3434
3435 # Avoid external, non-system, libraries getting enabled by dependency resolution
3436 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3437
3438 # build settings
3439 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3440 LIBPREF="lib"
3441 LIBSUF=".a"
3442 FULLNAME='$(NAME)$(BUILDSUF)'
3443 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3444 SLIBPREF="lib"
3445 SLIBSUF=".so"
3446 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3447 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3448 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3449 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3450 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3451 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3452 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3453
3454 asflags_filter=echo
3455 cflags_filter=echo
3456 ldflags_filter=echo
3457
3458 AS_C='-c'
3459 AS_O='-o $@'
3460 CC_C='-c'
3461 CC_E='-E -o $@'
3462 CC_O='-o $@'
3463 CXX_C='-c'
3464 CXX_O='-o $@'
3465 OBJCC_C='-c'
3466 OBJCC_E='-E -o $@'
3467 OBJCC_O='-o $@'
3468 X86ASM_O='-o $@'
3469 LD_O='-o $@'
3470 LD_LIB='-l%'
3471 LD_PATH='-L'
3472 HOSTCC_C='-c'
3473 HOSTCC_E='-E -o $@'
3474 HOSTCC_O='-o $@'
3475 HOSTLD_O='-o $@'
3476 NVCC_C='-c'
3477 NVCC_O='-o $@'
3478
3479 host_extralibs='-lm'
3480 host_cflags_filter=echo
3481 host_ldflags_filter=echo
3482
3483 target_path='$(CURDIR)'
3484
3485 # since the object filename is not given with the -MM flag, the compiler
3486 # is only able to print the basename, and we must add the path ourselves
3487 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3488 DEPFLAGS='-MM'
3489
3490 mkdir -p ffbuild
3491
3492 # find source path
3493 if test -f configure; then
3494     source_path=.
3495 else
3496     source_path=$(cd $(dirname "$0"); pwd)
3497     case "$source_path" in
3498         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3499     esac
3500     test -e "$source_path/config.h" &&
3501         die "Out of tree builds are impossible with config.h in source dir."
3502 fi
3503
3504 for v in "$@"; do
3505     r=${v#*=}
3506     l=${v%"$r"}
3507     r=$(sh_quote "$r")
3508     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3509 done
3510
3511 find_things(){
3512     thing=$1
3513     pattern=$2
3514     file=$source_path/$3
3515     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3516 }
3517
3518 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3519 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3520 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3521 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3522 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3523 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3524 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3525 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3526 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3527
3528 find_things_extern(){
3529     thing=$1
3530     pattern=$2
3531     file=$source_path/$3
3532     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3533 }
3534
3535 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3536 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3537
3538 AVCODEC_COMPONENTS_LIST="
3539     $BSF_LIST
3540     $DECODER_LIST
3541     $ENCODER_LIST
3542     $HWACCEL_LIST
3543     $PARSER_LIST
3544 "
3545
3546 AVDEVICE_COMPONENTS_LIST="
3547     $INDEV_LIST
3548     $OUTDEV_LIST
3549 "
3550
3551 AVFILTER_COMPONENTS_LIST="
3552     $FILTER_LIST
3553 "
3554
3555 AVFORMAT_COMPONENTS_LIST="
3556     $DEMUXER_LIST
3557     $MUXER_LIST
3558     $PROTOCOL_LIST
3559 "
3560
3561 ALL_COMPONENTS="
3562     $AVCODEC_COMPONENTS_LIST
3563     $AVDEVICE_COMPONENTS_LIST
3564     $AVFILTER_COMPONENTS_LIST
3565     $AVFORMAT_COMPONENTS_LIST
3566 "
3567
3568 for n in $COMPONENT_LIST; do
3569     v=$(toupper ${n%s})_LIST
3570     eval enable \$$v
3571     eval ${n}_if_any="\$$v"
3572 done
3573
3574 enable $ARCH_EXT_LIST
3575
3576 die_unknown(){
3577     echo "Unknown option \"$1\"."
3578     echo "See $0 --help for available options."
3579     exit 1
3580 }
3581
3582 print_in_columns() {
3583     cols=$(expr $ncols / 24)
3584     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3585 }
3586
3587 show_list() {
3588     suffix=_$1
3589     shift
3590     echo $* | sed s/$suffix//g | print_in_columns
3591     exit 0
3592 }
3593
3594 rand_list(){
3595     IFS=', '
3596     set -- $*
3597     unset IFS
3598     for thing; do
3599         comp=${thing%:*}
3600         prob=${thing#$comp}
3601         prob=${prob#:}
3602         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3603         echo "prob ${prob:-0.5}"
3604         printf '%s\n' $comp
3605     done
3606 }
3607
3608 do_random(){
3609     action=$1
3610     shift
3611     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3612     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3613 }
3614
3615 for opt do
3616     optval="${opt#*=}"
3617     case "$opt" in
3618         --extra-ldflags=*)
3619             add_ldflags $optval
3620         ;;
3621         --extra-ldexeflags=*)
3622             add_ldexeflags $optval
3623         ;;
3624         --extra-ldsoflags=*)
3625             add_ldsoflags $optval
3626         ;;
3627         --extra-ldlibflags=*)
3628             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3629                  "removed in the future. Use --extra-ldsoflags instead."
3630             add_ldsoflags $optval
3631         ;;
3632         --extra-libs=*)
3633             add_extralibs $optval
3634         ;;
3635         --disable-devices)
3636             disable $INDEV_LIST $OUTDEV_LIST
3637         ;;
3638         --enable-debug=*)
3639             debuglevel="$optval"
3640         ;;
3641         --disable-programs)
3642             disable $PROGRAM_LIST
3643         ;;
3644         --disable-everything)
3645             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3646         ;;
3647         --disable-all)
3648             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3649             disable $LIBRARY_LIST $PROGRAM_LIST doc
3650             enable avutil
3651         ;;
3652         --enable-random|--disable-random)
3653             action=${opt%%-random}
3654             do_random ${action#--} $COMPONENT_LIST
3655         ;;
3656         --enable-random=*|--disable-random=*)
3657             action=${opt%%-random=*}
3658             do_random ${action#--} $optval
3659         ;;
3660         --enable-sdl)
3661             enable sdl2
3662         ;;
3663         --enable-*=*|--disable-*=*)
3664             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3665             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3666             eval list=\$$(toupper $thing)_LIST
3667             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3668             list=$(filter "$name" $list)
3669             [ "$list" = "" ] && warn "Option $opt did not match anything"
3670             $action $list
3671         ;;
3672         --enable-yasm|--disable-yasm)
3673             warn "The ${opt} option is only provided for compatibility and will be\n"\
3674                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3675             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3676         ;;
3677         --yasmexe=*)
3678             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3679                  "removed in the future. Use --x86asmexe instead."
3680             x86asmexe="$optval"
3681         ;;
3682         --enable-?*|--disable-?*)
3683             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3684             if is_in $option $COMPONENT_LIST; then
3685                 test $action = disable && action=unset
3686                 eval $action \$$(toupper ${option%s})_LIST
3687             elif is_in $option $CMDLINE_SELECT; then
3688                 $action $option
3689             else
3690                 die_unknown $opt
3691             fi
3692         ;;
3693         --list-*)
3694             NAME="${opt#--list-}"
3695             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3696             NAME=${NAME%s}
3697             eval show_list $NAME \$$(toupper $NAME)_LIST
3698         ;;
3699         --help|-h) show_help
3700         ;;
3701         --quiet|-q) quiet=yes
3702         ;;
3703         --fatal-warnings) enable fatal_warnings
3704         ;;
3705         --libfuzzer=*)
3706             libfuzzer_path="$optval"
3707         ;;
3708         *)
3709             optname="${opt%%=*}"
3710             optname="${optname#--}"
3711             optname=$(echo "$optname" | sed 's/-/_/g')
3712             if is_in $optname $CMDLINE_SET; then
3713                 eval $optname='$optval'
3714             elif is_in $optname $CMDLINE_APPEND; then
3715                 append $optname "$optval"
3716             else
3717                 die_unknown $opt
3718             fi
3719         ;;
3720     esac
3721 done
3722
3723 for e in $env; do
3724     eval "export $e"
3725 done
3726
3727 if disabled autodetect; then
3728
3729     # Unless iconv is explicitely disabled by the user, we still want to probe
3730     # for the iconv from the libc.
3731     disabled iconv || enable libc_iconv
3732
3733     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3734     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3735 fi
3736 # Mark specifically enabled, but normally autodetected libraries as requested.
3737 for lib in $AUTODETECT_LIBS; do
3738     enabled $lib && request $lib
3739 done
3740 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3741 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3742 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3743
3744 disabled logging && logfile=/dev/null
3745
3746 # command line configuration sanity checks
3747
3748 # we need to build at least one lib type
3749 if ! enabled_any static shared; then
3750     cat <<EOF
3751 At least one library type must be built.
3752 Specify --enable-static to build the static libraries or --enable-shared to
3753 build the shared libraries as well. To only build the shared libraries specify
3754 --disable-static in addition to --enable-shared.
3755 EOF
3756     exit 1
3757 fi
3758
3759 die_license_disabled() {
3760     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3761 }
3762
3763 die_license_disabled_gpl() {
3764     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3765 }
3766
3767 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3768 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3769
3770 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3771 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3772
3773 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3774
3775 enabled_all gnutls openssl &&
3776     die "GnuTLS and OpenSSL must not be enabled at the same time."
3777
3778 # Disable all the library-specific components if the library itself
3779 # is disabled, see AVCODEC_LIST and following _LIST variables.
3780
3781 disable_components(){
3782     disabled ${1} && disable $(
3783         eval components="\$$(toupper ${1})_COMPONENTS"
3784         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3785     )
3786 }
3787
3788 map 'disable_components $v' $LIBRARY_LIST
3789
3790 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3791 set >> $logfile
3792
3793 test -n "$valgrind" && toolchain="valgrind-memcheck"
3794
3795 enabled ossfuzz && {
3796     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3797     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3798 }
3799
3800 case "$toolchain" in
3801     *-asan)
3802         cc_default="${toolchain%-asan}"
3803         add_cflags  -fsanitize=address
3804         add_ldflags -fsanitize=address
3805     ;;
3806     *-msan)
3807         cc_default="${toolchain%-msan}"
3808         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3809         add_ldflags -fsanitize=memory
3810     ;;
3811     *-tsan)
3812         cc_default="${toolchain%-tsan}"
3813         add_cflags  -fsanitize=thread -fPIE
3814         add_ldflags -fsanitize=thread -pie
3815         case "$toolchain" in
3816             gcc-tsan)
3817                 add_cflags  -fPIC
3818                 add_ldflags -fPIC
3819                 ;;
3820         esac
3821     ;;
3822     *-usan)
3823         cc_default="${toolchain%-usan}"
3824         add_cflags  -fsanitize=undefined
3825         add_ldflags -fsanitize=undefined
3826     ;;
3827     valgrind-*)
3828         target_exec_default="valgrind"
3829         case "$toolchain" in
3830             valgrind-massif)
3831                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3832                 ;;
3833             valgrind-memcheck)
3834                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3835                 ;;
3836         esac
3837     ;;
3838     msvc)
3839         # Check whether the current MSVC version needs the C99 converter.
3840         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3841         # support enough of C99 to build ffmpeg. Default to the new
3842         # behaviour if the regexp was unable to match anything, since this
3843         # successfully parses the version number of existing supported
3844         # versions that require the converter (MSVC 2010 and 2012).
3845         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3846         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3847             cc_default="cl"
3848             cxx_default="cl"
3849         else
3850             cc_default="c99wrap cl"
3851             cxx_default="c99wrap cl"
3852         fi
3853         ld_default="$source_path/compat/windows/mslink"
3854         nm_default="dumpbin -symbols"
3855         ar_default="lib"
3856         case "$arch" in
3857         aarch64|arm64)
3858             as_default="armasm64"
3859             ;;
3860         arm*)
3861             as_default="armasm"
3862             ;;
3863         esac
3864         target_os_default="win32"
3865         # Use a relative path for TMPDIR. This makes sure all the
3866         # ffconf temp files are written with a relative path, avoiding
3867         # issues with msys/win32 path conversion for MSVC parameters
3868         # such as -Fo<file> or -out:<file>.
3869         TMPDIR=.
3870     ;;
3871     icl)
3872         cc_default="icl"
3873         ld_default="xilink"
3874         nm_default="dumpbin -symbols"
3875         ar_default="xilib"
3876         target_os_default="win32"
3877         TMPDIR=.
3878     ;;
3879     gcov)
3880         add_cflags  -fprofile-arcs -ftest-coverage
3881         add_ldflags -fprofile-arcs -ftest-coverage
3882     ;;
3883     llvm-cov)
3884         add_cflags -fprofile-arcs -ftest-coverage
3885         add_ldflags --coverage
3886     ;;
3887     hardened)
3888         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3889         add_cflags   -fno-strict-overflow -fstack-protector-all
3890         add_ldflags  -Wl,-z,relro -Wl,-z,now
3891         add_cflags   -fPIE
3892         add_ldexeflags -fPIE -pie
3893     ;;
3894     ?*)
3895         die "Unknown toolchain $toolchain"
3896     ;;
3897 esac
3898
3899 if test -n "$cross_prefix"; then
3900     test -n "$arch" && test -n "$target_os" ||
3901         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3902     enable cross_compile
3903 fi
3904
3905 ar_default="${cross_prefix}${ar_default}"
3906 cc_default="${cross_prefix}${cc_default}"
3907 cxx_default="${cross_prefix}${cxx_default}"
3908 nm_default="${cross_prefix}${nm_default}"
3909 pkg_config_default="${cross_prefix}${pkg_config_default}"
3910 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3911     ranlib_default="${cross_prefix}${ranlib_default} -D"
3912 else
3913     ranlib_default="${cross_prefix}${ranlib_default}"
3914 fi
3915 strip_default="${cross_prefix}${strip_default}"
3916 windres_default="${cross_prefix}${windres_default}"
3917
3918 sysinclude_default="${sysroot}/usr/include"
3919
3920 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3921     target_exec target_os x86asmexe nvcc
3922 enabled cross_compile || host_cc_default=$cc
3923 set_default host_cc
3924
3925 pkg_config_fail_message=""
3926 if ! $pkg_config --version >/dev/null 2>&1; then
3927     warn "$pkg_config not found, library detection may fail."
3928     pkg_config=false
3929 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3930     pkg_config_fail_message="
3931 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3932 fi
3933
3934 if test $doxygen != $doxygen_default && \
3935   ! $doxygen --version >/dev/null 2>&1; then
3936     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3937 fi
3938
3939 exesuf() {
3940     case $1 in
3941         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3942     esac
3943 }
3944
3945 EXESUF=$(exesuf $target_os)
3946 HOSTEXESUF=$(exesuf $host_os)
3947
3948 # set temporary file name
3949 : ${TMPDIR:=$TEMPDIR}
3950 : ${TMPDIR:=$TMP}
3951 : ${TMPDIR:=/tmp}
3952
3953 if [ -n "$tempprefix" ] ; then
3954     mktemp(){
3955         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3956         echo "$tmpname"
3957         mkdir "$tmpname"
3958     }
3959 elif ! check_cmd mktemp -u XXXXXX; then
3960     # simple replacement for missing mktemp
3961     # NOT SAFE FOR GENERAL USE
3962     mktemp(){
3963         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3964         echo "$tmpname"
3965         mkdir "$tmpname"
3966     }
3967 fi
3968
3969 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3970     die "Unable to create temporary directory in $TMPDIR."
3971
3972 tmpfile(){
3973     tmp="${FFTMPDIR}/test"$2
3974     (set -C; exec > $tmp) 2> /dev/null ||
3975         die "Unable to create temporary file in $FFTMPDIR."
3976     eval $1=$tmp
3977 }
3978
3979 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3980 trap 'exit 2' INT
3981
3982 tmpfile TMPASM .asm
3983 tmpfile TMPC   .c
3984 tmpfile TMPCPP .cpp
3985 tmpfile TMPE   $EXESUF
3986 tmpfile TMPH   .h
3987 tmpfile TMPM   .m
3988 tmpfile TMPO   .o
3989 tmpfile TMPS   .S
3990 tmpfile TMPSH  .sh
3991 tmpfile TMPV   .ver
3992
3993 unset -f mktemp
3994
3995 chmod +x $TMPE
3996
3997 # make sure we can execute files in $TMPDIR
3998 cat > $TMPSH 2>> $logfile <<EOF
3999 #! /bin/sh
4000 EOF
4001 chmod +x $TMPSH >> $logfile 2>&1
4002 if ! $TMPSH >> $logfile 2>&1; then
4003     cat <<EOF
4004 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4005 variable to another directory and make sure that it is not mounted noexec.
4006 EOF
4007     die "Sanity test failed."
4008 fi
4009
4010 armasm_flags(){
4011     for flag; do
4012         case $flag in
4013             # Filter out MSVC cl.exe options from cflags that shouldn't
4014             # be passed to gas-preprocessor
4015             -M[TD]*)                                            ;;
4016             *)                  echo $flag                      ;;
4017         esac
4018    done
4019 }
4020
4021 cparser_flags(){
4022     for flag; do
4023         case $flag in
4024             -Wno-switch)             echo -Wno-switch-enum ;;
4025             -Wno-format-zero-length) ;;
4026             -Wdisabled-optimization) ;;
4027             -Wno-pointer-sign)       echo -Wno-other ;;
4028             *)                       echo $flag ;;
4029         esac
4030     done
4031 }
4032
4033 msvc_common_flags(){
4034     for flag; do
4035         case $flag in
4036             # In addition to specifying certain flags under the compiler
4037             # specific filters, they must be specified here as well or else the
4038             # generic catch all at the bottom will print the original flag.
4039             -Wall)                ;;
4040             -Wextra)              ;;
4041             -std=c99)             ;;
4042             # Common flags
4043             -fomit-frame-pointer) ;;
4044             -g)                   echo -Z7 ;;
4045             -fno-math-errno)      ;;
4046             -fno-common)          ;;
4047             -fno-signed-zeros)    ;;
4048             -fPIC)                ;;
4049             -mthumb)              ;;
4050             -march=*)             ;;
4051             -lz)                  echo zlib.lib ;;
4052             -lx264)               echo libx264.lib ;;
4053             -lstdc++)             ;;
4054             -l*)                  echo ${flag#-l}.lib ;;
4055             -LARGEADDRESSAWARE)   echo $flag ;;
4056             -L*)                  echo -libpath:${flag#-L} ;;
4057             *)                    echo $flag ;;
4058         esac
4059     done
4060 }
4061
4062 msvc_flags(){
4063     msvc_common_flags "$@"
4064     for flag; do
4065         case $flag in
4066             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4067                                        -wd4554 ;;
4068             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4069                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4070                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4071                                        -wd4307 \
4072                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4073         esac
4074     done
4075 }
4076
4077 icl_flags(){
4078     msvc_common_flags "$@"
4079     for flag; do
4080         case $flag in
4081             # Despite what Intel's documentation says -Wall, which is supported
4082             # on Windows, does enable remarks so disable them here.
4083             -Wall)                echo $flag -Qdiag-disable:remark ;;
4084             -std=c99)             echo -Qstd=c99 ;;
4085             -flto)                echo -ipo ;;
4086         esac
4087     done
4088 }
4089
4090 icc_flags(){
4091     for flag; do
4092         case $flag in
4093             -flto)                echo -ipo ;;
4094             *)                    echo $flag ;;
4095         esac
4096     done
4097 }
4098
4099 suncc_flags(){
4100     for flag; do
4101         case $flag in
4102             -march=*|-mcpu=*)
4103                 case "${flag#*=}" in
4104                     native)                   echo -xtarget=native       ;;
4105                     v9|niagara)               echo -xarch=sparc          ;;
4106                     ultrasparc)               echo -xarch=sparcvis       ;;
4107                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4108                     i586|pentium)             echo -xchip=pentium        ;;
4109                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4110                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4111                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4112                     pentium4*)          echo -xtarget=pentium4           ;;
4113                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4114                     *-sse3)             echo -xarch=sse3                 ;;
4115                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4116                     bonnell)                   echo -xarch=ssse3         ;;
4117                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4118                     westmere)                  echo -xtarget=westmere    ;;
4119                     silvermont)                echo -xarch=sse4_2        ;;
4120                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4121                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4122                                                echo -xarch=avx           ;;
4123                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4124                     btver1)                    echo -xarch=amdsse4a      ;;
4125                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4126                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4127                     k8|opteron|athlon64|athlon-fx)
4128                                                echo -xarch=sse2a         ;;
4129                     athlon*)                   echo -xarch=pentium_proa  ;;
4130                 esac
4131                 ;;
4132             -std=c99)             echo -xc99              ;;
4133             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4134             -fPIC)                echo -KPIC -xcode=pic32 ;;
4135             -W*,*)                echo $flag              ;;
4136             -f*-*|-W*|-mimpure-text)                      ;;
4137             -shared)              echo -G                 ;;
4138             *)                    echo $flag              ;;
4139         esac
4140     done
4141 }
4142
4143 probe_cc(){
4144     pfx=$1
4145     _cc=$2
4146     first=$3
4147
4148     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4149     unset _ld_o _ldflags _ld_lib _ld_path
4150     unset _depflags _DEPCMD _DEPFLAGS
4151     _flags_filter=echo
4152
4153     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4154         true # no-op to avoid reading stdin in following checks
4155     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4156         _type=llvm_gcc
4157         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4158         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4159         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4160         _cflags_speed='-O3'
4161         _cflags_size='-Os'
4162     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4163         _type=gcc
4164         gcc_version=$($_cc --version | head -n1)
4165         gcc_basever=$($_cc -dumpversion)
4166         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4167         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4168         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4169         case $gcc_basever in
4170             2) ;;
4171             2.*) ;;
4172             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4173         esac
4174         if [ "$first" = true ]; then
4175             case $gcc_basever in
4176                 4.2*)
4177                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4178             esac
4179         fi
4180         _cflags_speed='-O3'
4181         _cflags_size='-Os'
4182     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4183         _type=icc
4184         _ident=$($_cc --version | head -n1)
4185         _depflags='-MMD'
4186         _cflags_speed='-O3'
4187         _cflags_size='-Os'
4188         _cflags_noopt='-O1'
4189         _flags_filter=icc_flags
4190     elif $_cc -v 2>&1 | grep -q xlc; then
4191         _type=xlc
4192         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4193         _cflags_speed='-O5'
4194         _cflags_size='-O5 -qcompact'
4195     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4196         test -d "$sysroot" || die "No valid sysroot specified."
4197         _type=armcc
4198         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4199         armcc_conf="$PWD/armcc.conf"
4200         $_cc --arm_linux_configure                 \
4201              --arm_linux_config_file="$armcc_conf" \
4202              --configure_sysroot="$sysroot"        \
4203              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4204              die "Error creating armcc configuration file."
4205         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4206         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4207         as_default="${cross_prefix}gcc"
4208         _depflags='-MMD'
4209         _cflags_speed='-O3'
4210         _cflags_size='-Os'
4211     elif $_cc -v 2>&1 | grep -q clang; then
4212         _type=clang
4213         _ident=$($_cc --version 2>/dev/null | head -n1)
4214         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4215         _cflags_speed='-O3'
4216         _cflags_size='-Oz'
4217     elif $_cc -V 2>&1 | grep -q Sun; then
4218         _type=suncc
4219         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4220         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4221         _DEPFLAGS='-xM1 -xc99'
4222         _ldflags='-std=c99'
4223         _cflags_speed='-O5'
4224         _cflags_size='-O5 -xspace'
4225         _flags_filter=suncc_flags
4226     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4227         _type=pathscale
4228         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4229         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4230         _cflags_speed='-O2'
4231         _cflags_size='-Os'
4232         _flags_filter='filter_out -Wdisabled-optimization'
4233     elif $_cc -v 2>&1 | grep -q Open64; then
4234         _type=open64
4235         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4236         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4237         _cflags_speed='-O2'
4238         _cflags_size='-Os'
4239         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4240     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4241         _type=armasm
4242         _ident=$($_cc | head -n1)
4243         # 4509: "This form of conditional instruction is deprecated"
4244         _flags="-nologo -ignore 4509"
4245         _flags_filter=armasm_flags
4246     elif $_cc 2>&1 | grep -q Intel; then
4247         _type=icl
4248         _ident=$($_cc 2>&1 | head -n1)
4249         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4250         # Not only is O3 broken on 13.x+ but it is slower on all previous
4251         # versions (tested) as well.
4252         _cflags_speed="-O2"
4253         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4254         if $_cc 2>&1 | grep -q Linker; then
4255             _ld_o='-out:$@'
4256         else
4257             _ld_o='-Fe$@'
4258         fi
4259         _cc_o='-Fo$@'
4260         _cc_e='-P'
4261         _flags_filter=icl_flags
4262         _ld_lib='lib%.a'
4263         _ld_path='-libpath:'
4264         # -Qdiag-error to make icl error when seeing certain unknown arguments
4265         _flags='-nologo -Qdiag-error:4044,10157'
4266         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4267         # with MSVC which enables it by default.
4268         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4269         disable stripping
4270     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4271         # lld can emulate multiple different linkers; in ms link.exe mode,
4272         # the -? parameter gives the help output which contains an identifyable
4273         # string, while it gives an error in other modes.
4274         _type=lld-link
4275         # The link.exe mode doesn't have a switch for getting the version,
4276         # but we can force it back to gnu mode and get the version from there.
4277         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4278         _ld_o='-out:$@'
4279         _flags_filter=msvc_flags
4280         _ld_lib='lib%.a'
4281         _ld_path='-libpath:'
4282     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4283         _type=msvc
4284         _ident=$($_cc 2>&1 | head -n1)
4285         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4286         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4287         _cflags_speed="-O2"
4288         _cflags_size="-O1"
4289         _cflags_noopt="-O1"
4290         if $_cc -nologo- 2>&1 | grep -q Linker; then
4291             _ld_o='-out:$@'
4292         else
4293             _ld_o='-Fe$@'
4294         fi
4295         _cc_o='-Fo$@'
4296         _cc_e='-P -Fi$@'
4297         _flags_filter=msvc_flags
4298         _ld_lib='lib%.a'
4299         _ld_path='-libpath:'
4300         _flags='-nologo'
4301         disable stripping
4302     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4303         _type=cparser
4304         _ident=$($_cc --version | head -n1)
4305         _depflags='-MMD'
4306         _cflags_speed='-O4'
4307         _cflags_size='-O2'
4308         _flags_filter=cparser_flags
4309     fi
4310
4311     eval ${pfx}_type=\$_type
4312     eval ${pfx}_ident=\$_ident
4313 }
4314
4315 set_ccvars(){
4316     eval ${1}_C=\${_cc_c-\${${1}_C}}
4317     eval ${1}_E=\${_cc_e-\${${1}_E}}
4318     eval ${1}_O=\${_cc_o-\${${1}_O}}
4319
4320     if [ -n "$_depflags" ]; then
4321         eval ${1}_DEPFLAGS=\$_depflags
4322     else
4323         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4324         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4325         eval DEP${1}FLAGS=\$_flags
4326     fi
4327 }
4328
4329 probe_cc cc "$cc" "true"
4330 cflags_filter=$_flags_filter
4331 cflags_speed=$_cflags_speed
4332 cflags_size=$_cflags_size
4333 cflags_noopt=$_cflags_noopt
4334 add_cflags $_flags $_cflags
4335 cc_ldflags=$_ldflags
4336 set_ccvars CC
4337 set_ccvars CXX
4338
4339 probe_cc hostcc "$host_cc"
4340 host_cflags_filter=$_flags_filter
4341 host_cflags_speed=$_cflags_speed
4342 add_host_cflags  $_flags $_cflags
4343 set_ccvars HOSTCC
4344
4345 test -n "$cc_type" && enable $cc_type ||
4346     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4347
4348 : ${as_default:=$cc}
4349 : ${objcc_default:=$cc}
4350 : ${dep_cc_default:=$cc}
4351 : ${ld_default:=$cc}
4352 : ${host_ld_default:=$host_cc}
4353 set_default ar as objcc dep_cc ld ln_s host_ld windres
4354
4355 probe_cc as "$as"
4356 asflags_filter=$_flags_filter
4357 add_asflags $_flags $_cflags
4358 set_ccvars AS
4359
4360 probe_cc objcc "$objcc"
4361 objcflags_filter=$_flags_filter
4362 add_objcflags $_flags $_cflags
4363 set_ccvars OBJC
4364
4365 probe_cc ld "$ld"
4366 ldflags_filter=$_flags_filter
4367 add_ldflags $_flags $_ldflags
4368 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4369 LD_O=${_ld_o-$LD_O}
4370 LD_LIB=${_ld_lib-$LD_LIB}
4371 LD_PATH=${_ld_path-$LD_PATH}
4372
4373 probe_cc hostld "$host_ld"
4374 host_ldflags_filter=$_flags_filter
4375 add_host_ldflags $_flags $_ldflags
4376 HOSTLD_O=${_ld_o-$HOSTLD_O}
4377
4378 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4379     probe_cc depcc "$dep_cc"
4380     CCDEP=${_DEPCMD:-$DEPCMD}
4381     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4382     DEPCCFLAGS=$_flags
4383 fi
4384
4385 if $ar 2>&1 | grep -q Microsoft; then
4386     arflags="-nologo"
4387     ar_o='-out:$@'
4388 elif $ar 2>&1 | grep -q "\[D\] "; then
4389     arflags="rcD"
4390     ar_o='$@'
4391 else
4392     arflags="rc"
4393     ar_o='$@'
4394 fi
4395
4396 add_cflags $extra_cflags
4397 add_cxxflags $extra_cxxflags
4398 add_objcflags $extra_objcflags
4399 add_asflags $extra_cflags
4400
4401 if test -n "$sysroot"; then
4402     case "$cc_type" in
4403         gcc|llvm_gcc|clang)
4404             add_cppflags --sysroot="$sysroot"
4405             add_ldflags --sysroot="$sysroot"
4406         ;;
4407     esac
4408 fi
4409
4410 if test "$cpu" = host; then
4411     enabled cross_compile &&
4412         die "--cpu=host makes no sense when cross-compiling."
4413
4414     case "$cc_type" in
4415         gcc|llvm_gcc)
4416             check_native(){
4417                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4418                 sed -n "/cc1.*$1=/{
4419                             s/.*$1=\\([^ ]*\\).*/\\1/
4420                             p
4421                             q
4422                         }" $TMPE
4423             }
4424             cpu=$(check_native -march || check_native -mcpu)
4425         ;;
4426         clang)
4427             check_native(){
4428                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4429                 sed -n "/cc1.*-target-cpu /{
4430                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4431                             p
4432                             q
4433                         }" $TMPE
4434             }
4435             cpu=$(check_native -march)
4436         ;;
4437     esac
4438
4439     test "${cpu:-host}" = host &&
4440         die "--cpu=host not supported with compiler $cc"
4441 fi
4442
4443 # Deal with common $arch aliases
4444 case "$arch" in
4445     aarch64|arm64)
4446         arch="aarch64"
4447     ;;
4448     arm*|iPad*|iPhone*)
4449         arch="arm"
4450     ;;
4451     mips*|IP*)
4452         case "$arch" in
4453         *el)
4454             add_cppflags -EL
4455             add_ldflags -EL
4456         ;;
4457         *eb)
4458             add_cppflags -EB
4459             add_ldflags -EB
4460         ;;
4461         esac
4462         arch="mips"
4463     ;;
4464     parisc*|hppa*)
4465         arch="parisc"
4466     ;;
4467     "Power Macintosh"|ppc*|powerpc*)
4468         arch="ppc"
4469     ;;
4470     s390|s390x)
4471         arch="s390"
4472     ;;
4473     sh4|sh)
4474         arch="sh4"
4475     ;;
4476     sun4*|sparc*)
4477         arch="sparc"
4478     ;;
4479     tilegx|tile-gx)
4480         arch="tilegx"
4481     ;;
4482     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4483         arch="x86"
4484     ;;
4485 esac
4486
4487 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4488 enable $arch
4489
4490 # Add processor-specific flags
4491 if enabled aarch64; then
4492
4493     case $cpu in
4494         armv*)
4495             cpuflags="-march=$cpu"
4496         ;;
4497         *)
4498             cpuflags="-mcpu=$cpu"
4499         ;;
4500     esac
4501
4502 elif enabled alpha; then
4503
4504     cpuflags="-mcpu=$cpu"
4505
4506 elif enabled arm; then
4507
4508     check_arm_arch() {
4509         check_cpp_condition stddef.h \
4510             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4511             $cpuflags
4512     }
4513
4514     probe_arm_arch() {
4515         if   check_arm_arch 4;        then echo armv4
4516         elif check_arm_arch 4T;       then echo armv4t
4517         elif check_arm_arch 5;        then echo armv5
4518         elif check_arm_arch 5E;       then echo armv5e
4519         elif check_arm_arch 5T;       then echo armv5t
4520         elif check_arm_arch 5TE;      then echo armv5te
4521         elif check_arm_arch 5TEJ;     then echo armv5te
4522         elif check_arm_arch 6;        then echo armv6
4523         elif check_arm_arch 6J;       then echo armv6j
4524         elif check_arm_arch 6K;       then echo armv6k
4525         elif check_arm_arch 6Z;       then echo armv6z
4526         elif check_arm_arch 6ZK;      then echo armv6zk
4527         elif check_arm_arch 6T2;      then echo armv6t2
4528         elif check_arm_arch 7;        then echo armv7
4529         elif check_arm_arch 7A  7_A;  then echo armv7-a
4530         elif check_arm_arch 7S;       then echo armv7-a
4531         elif check_arm_arch 7R  7_R;  then echo armv7-r
4532         elif check_arm_arch 7M  7_M;  then echo armv7-m
4533         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4534         elif check_arm_arch 8A  8_A;  then echo armv8-a
4535         fi
4536     }
4537
4538     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4539
4540     case $cpu in
4541         armv*)
4542             cpuflags="-march=$cpu"
4543             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4544         ;;
4545         *)
4546             cpuflags="-mcpu=$cpu"
4547             case $cpu in
4548                 cortex-a*)                               subarch=armv7a  ;;
4549                 cortex-r*)                               subarch=armv7r  ;;
4550                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4551                 arm11*)                                  subarch=armv6   ;;
4552                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4553                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4554                 *)                             subarch=$(probe_arm_arch) ;;
4555             esac
4556         ;;
4557     esac
4558
4559     case "$subarch" in
4560         armv5t*)    enable fast_clz                ;;
4561         armv[6-8]*)
4562             enable fast_clz
4563             disabled fast_unaligned || enable fast_unaligned
4564             ;;
4565     esac
4566
4567 elif enabled avr32; then
4568
4569     case $cpu in
4570         ap7[02]0[0-2])
4571             subarch="avr32_ap"
4572             cpuflags="-mpart=$cpu"
4573         ;;
4574         ap)
4575             subarch="avr32_ap"
4576             cpuflags="-march=$cpu"
4577         ;;
4578         uc3[ab]*)
4579             subarch="avr32_uc"
4580             cpuflags="-mcpu=$cpu"
4581         ;;
4582         uc)
4583             subarch="avr32_uc"
4584             cpuflags="-march=$cpu"
4585         ;;
4586     esac
4587
4588 elif enabled bfin; then
4589
4590     cpuflags="-mcpu=$cpu"
4591
4592 elif enabled mips; then
4593
4594     cpuflags="-march=$cpu"
4595
4596     if [ "$cpu" != "generic" ]; then
4597         disable mips32r2
4598         disable mips32r5
4599         disable mips64r2
4600         disable mips32r6
4601         disable mips64r6
4602         disable loongson2
4603         disable loongson3
4604
4605         case $cpu in
4606             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4607                 enable mips32r2
4608                 disable msa
4609             ;;
4610             p5600|i6400|p6600)
4611                 disable mipsdsp
4612                 disable mipsdspr2
4613             ;;
4614             loongson*)
4615                 enable loongson2
4616                 enable loongson3
4617                 enable local_aligned
4618                 enable simd_align_16
4619                 enable fast_64bit
4620                 enable fast_clz
4621                 enable fast_cmov
4622                 enable fast_unaligned
4623                 disable aligned_stack
4624                 disable mipsfpu
4625                 disable mipsdsp
4626                 disable mipsdspr2
4627                 case $cpu in
4628                     loongson3*)
4629                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4630                     ;;
4631                     loongson2e)
4632                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4633                     ;;
4634                     loongson2f)
4635                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4636                     ;;
4637                 esac
4638             ;;
4639             *)
4640                 # Unknown CPU. Disable everything.
4641                 warn "unknown CPU. Disabling all MIPS optimizations."
4642                 disable mipsfpu
4643                 disable mipsdsp
4644                 disable mipsdspr2
4645                 disable msa
4646                 disable mmi
4647             ;;
4648         esac
4649
4650         case $cpu in
4651             24kc)
4652                 disable mipsfpu
4653                 disable mipsdsp
4654                 disable mipsdspr2
4655             ;;
4656             24kf*)
4657                 disable mipsdsp
4658                 disable mipsdspr2
4659             ;;
4660             24kec|34kc|1004kc)
4661                 disable mipsfpu
4662                 disable mipsdspr2
4663             ;;
4664             24kef*|34kf*|1004kf*)
4665                 disable mipsdspr2
4666             ;;
4667             74kc)
4668                 disable mipsfpu
4669             ;;
4670             p5600)
4671                 enable mips32r5
4672                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4673             ;;
4674             i6400)
4675                 enable mips64r6
4676                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4677             ;;
4678             p6600)
4679                 enable mips64r6
4680                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4681             ;;
4682         esac
4683     else
4684         # We do not disable anything. Is up to the user to disable the unwanted features.
4685         warn 'generic cpu selected'
4686     fi
4687
4688 elif enabled ppc; then
4689
4690     disable ldbrx
4691
4692     case $(tolower $cpu) in
4693         601|ppc601|powerpc601)
4694             cpuflags="-mcpu=601"
4695             disable altivec
4696         ;;
4697         603*|ppc603*|powerpc603*)
4698             cpuflags="-mcpu=603"
4699             disable altivec
4700         ;;
4701         604*|ppc604*|powerpc604*)
4702             cpuflags="-mcpu=604"
4703             disable altivec
4704         ;;
4705         g3|75*|ppc75*|powerpc75*)
4706             cpuflags="-mcpu=750"
4707             disable altivec
4708         ;;
4709         g4|745*|ppc745*|powerpc745*)
4710             cpuflags="-mcpu=7450"
4711             disable vsx
4712         ;;
4713         74*|ppc74*|powerpc74*)
4714             cpuflags="-mcpu=7400"
4715             disable vsx
4716         ;;
4717         g5|970|ppc970|powerpc970)
4718             cpuflags="-mcpu=970"
4719             disable vsx
4720         ;;
4721         power[3-6]*)
4722             cpuflags="-mcpu=$cpu"
4723             disable vsx
4724         ;;
4725         power[7-8]*)
4726             cpuflags="-mcpu=$cpu"
4727         ;;
4728         cell)
4729             cpuflags="-mcpu=cell"
4730             enable ldbrx
4731             disable vsx
4732         ;;
4733         e500mc)
4734             cpuflags="-mcpu=e500mc"
4735             disable altivec
4736         ;;
4737         e500v2)
4738             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4739             disable altivec
4740             disable dcbzl
4741         ;;
4742         e500)
4743             cpuflags="-mcpu=8540 -mhard-float"
4744             disable altivec
4745             disable dcbzl
4746         ;;
4747     esac
4748
4749 elif enabled sparc; then
4750
4751     case $cpu in
4752         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4753             cpuflags="-mcpu=$cpu"
4754         ;;
4755         ultrasparc*|niagara[234])
4756             cpuflags="-mcpu=$cpu"
4757         ;;
4758     esac
4759
4760 elif enabled x86; then
4761
4762     case $cpu in
4763         i[345]86|pentium)
4764             cpuflags="-march=$cpu"
4765             disable i686
4766             disable mmx
4767         ;;
4768         # targets that do NOT support nopl and conditional mov (cmov)
4769         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4770             cpuflags="-march=$cpu"
4771             disable i686
4772         ;;
4773         # targets that do support nopl and conditional mov (cmov)
4774         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4775         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4776         |amdfam10|barcelona|b[dt]ver*|znver*)
4777             cpuflags="-march=$cpu"
4778             enable i686
4779             enable fast_cmov
4780         ;;
4781         # targets that do support conditional mov but on which it's slow
4782         pentium4|pentium4m|prescott|nocona)
4783             cpuflags="-march=$cpu"
4784             enable i686
4785             disable fast_cmov
4786         ;;
4787     esac
4788
4789 fi
4790
4791 if [ "$cpu" != generic ]; then
4792     add_cflags  $cpuflags
4793     add_asflags $cpuflags
4794     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4795 fi
4796
4797 # compiler sanity check
4798 check_exec <<EOF
4799 int main(void){ return 0; }
4800 EOF
4801 if test "$?" != 0; then
4802     echo "$cc is unable to create an executable file."
4803     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4804         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4805         echo "Only do this if you know what cross compiling means."
4806     fi
4807     die "C compiler test failed."
4808 fi
4809
4810 add_cppflags -D_ISOC99_SOURCE
4811 add_cxxflags -D__STDC_CONSTANT_MACROS
4812 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4813
4814 # some compilers silently accept -std=c11, so we also need to check that the
4815 # version macro is defined properly
4816 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4817     add_cflags -std=c11 ||
4818     check_cflags -std=c99
4819
4820 check_cppflags -D_FILE_OFFSET_BITS=64
4821 check_cppflags -D_LARGEFILE_SOURCE
4822
4823 add_host_cppflags -D_ISOC99_SOURCE
4824 check_host_cflags -std=c99
4825 check_host_cflags -Wall
4826 check_host_cflags $host_cflags_speed
4827
4828 check_64bit(){
4829     arch32=$1
4830     arch64=$2
4831     expr=$3
4832     check_code cc "" "int test[2*($expr) - 1]" &&
4833         subarch=$arch64 || subarch=$arch32
4834     enable $subarch
4835 }
4836
4837 case "$arch" in
4838     aarch64|alpha|ia64)
4839         enabled shared && enable_weak pic
4840     ;;
4841     mips)
4842         check_64bit mips mips64 '_MIPS_SIM > 1'
4843         enabled shared && enable_weak pic
4844     ;;
4845     parisc)
4846         check_64bit parisc parisc64 'sizeof(void *) > 4'
4847         enabled shared && enable_weak pic
4848     ;;
4849     ppc)
4850         check_64bit ppc ppc64 'sizeof(void *) > 4'
4851         enabled shared && enable_weak pic
4852     ;;
4853     s390)
4854         check_64bit s390 s390x 'sizeof(void *) > 4'
4855         enabled shared && enable_weak pic
4856     ;;
4857     sparc)
4858         check_64bit sparc sparc64 'sizeof(void *) > 4'
4859         enabled shared && enable_weak pic
4860     ;;
4861     x86)
4862         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4863         # Treat x32 as x64 for now. Note it also needs pic if shared
4864         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4865             subarch=x86_64 && enable x86_64 && disable x86_32
4866         if enabled x86_64; then
4867             enabled shared && enable_weak pic
4868             objformat=elf64
4869         fi
4870     ;;
4871 esac
4872
4873 # OS specific
4874 case $target_os in
4875     aix)
4876         SHFLAGS=-shared
4877         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4878         enabled shared && add_ldflags -Wl,-brtl
4879         arflags='-Xany -r -c'
4880         ;;
4881     android)
4882         disable symver
4883         enable section_data_rel_ro
4884         SLIB_INSTALL_NAME='$(SLIBNAME)'
4885         SLIB_INSTALL_LINKS=
4886         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4887         ;;
4888     haiku)
4889         prefix_default="/boot/common"
4890         network_extralibs="-lnetwork"
4891         host_extralibs=
4892         ;;
4893     sunos)
4894         SHFLAGS='-shared -Wl,-h,$$(@F)'
4895         enabled x86 && append SHFLAGS -mimpure-text
4896         network_extralibs="-lsocket -lnsl"
4897         add_cppflags -D__EXTENSIONS__
4898         # When using suncc to build, the Solaris linker will mark
4899         # an executable with each instruction set encountered by
4900         # the Solaris assembler.  As our libraries contain their own
4901         # guards for processor-specific code, instead suppress
4902         # generation of the HWCAPS ELF section on Solaris x86 only.
4903         enabled_all suncc x86 &&
4904             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4905             add_ldflags -Wl,-M,mapfile
4906         nm_default='nm -P -g'
4907         version_script='-M'
4908         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4909         ;;
4910     netbsd)
4911         disable symver
4912         oss_indev_extralibs="-lossaudio"
4913         oss_outdev_extralibs="-lossaudio"
4914         enabled gcc || check_ldflags -Wl,-zmuldefs
4915         ;;
4916     openbsd|bitrig)
4917         disable symver
4918         SHFLAGS='-shared'
4919         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4920         SLIB_INSTALL_LINKS=
4921         oss_indev_extralibs="-lossaudio"
4922         oss_outdev_extralibs="-lossaudio"
4923         ;;
4924     dragonfly)
4925         disable symver
4926         ;;
4927     freebsd)
4928         ;;
4929     bsd/os)
4930         add_extralibs -lpoll -lgnugetopt
4931         strip="strip -d"
4932         ;;
4933     darwin)
4934         enabled ppc && add_asflags -force_cpusubtype_ALL
4935         install_name_dir_default='$(SHLIBDIR)'
4936         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4937         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4938         strip="${strip} -x"
4939         add_ldflags -Wl,-dynamic,-search_paths_first
4940         check_cflags -Werror=partial-availability
4941         SLIBSUF=".dylib"
4942         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4943         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4944         enabled x86_64 && objformat="macho64" || objformat="macho32"
4945         enabled_any pic shared x86_64 ||
4946             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4947         check_header dispatch/dispatch.h &&
4948             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4949         if test -n "$sysroot"; then
4950             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4951             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4952         fi
4953         version_script='-exported_symbols_list'
4954         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4955         ;;
4956     msys*)
4957         die "Native MSYS builds are discouraged, please use the MINGW environment."
4958         ;;
4959     mingw32*|mingw64*)
4960         target_os=mingw32
4961         if enabled shared; then
4962             # Cannot build both shared and static libs when using dllimport.
4963             disable static
4964         fi
4965         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4966         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4967         shlibdir_default="$bindir_default"
4968         SLIBPREF=""
4969         SLIBSUF=".dll"
4970         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4971         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4972         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4973         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4974         SLIB_INSTALL_LINKS=
4975         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4976         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4977         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4978         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4979         enabled x86_64 && objformat="win64" || objformat="win32"
4980         ranlib=:
4981         enable dos_paths
4982         check_ldflags -Wl,--nxcompat,--dynamicbase
4983         # Lets work around some stupidity in binutils.
4984         # ld will strip relocations from executables even though we need them
4985         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4986         # however ld then forgets what the entry point should be (oops) so we
4987         # have to manually (re)set it.
4988         if enabled x86_32; then
4989             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4990         elif enabled x86_64; then
4991             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4992             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4993             # Set image base >4GB for extra entropy with HEASLR
4994             add_ldexeflags -Wl,--image-base,0x140000000
4995             append SHFLAGS -Wl,--image-base,0x180000000
4996         fi
4997         ;;
4998     win32|win64)
4999         disable symver
5000         if enabled shared; then
5001             # Link to the import library instead of the normal static library
5002             # for shared libs.
5003             LD_LIB='%.lib'
5004             # Cannot build both shared and static libs with MSVC or icl.
5005             disable static
5006         fi
5007         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5008         shlibdir_default="$bindir_default"
5009         SLIBPREF=""
5010         SLIBSUF=".dll"
5011         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5012         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5013         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5014         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5015         SLIB_INSTALL_LINKS=
5016         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5017         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5018         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5019         enabled x86_64 && objformat="win64" || objformat="win32"
5020         ranlib=:
5021         enable dos_paths
5022         ;;
5023     cygwin*)
5024         target_os=cygwin
5025         shlibdir_default="$bindir_default"
5026         SLIBPREF="cyg"
5027         SLIBSUF=".dll"
5028         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5029         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5030         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5031         SLIB_INSTALL_LINKS=
5032         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5033         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5034         enabled x86_64 && objformat="win64" || objformat="win32"
5035         enable dos_paths
5036         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5037         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5038         ;;
5039     *-dos|freedos|opendos)
5040         network_extralibs="-lsocket"
5041         objformat="coff"
5042         enable dos_paths
5043         add_cppflags -U__STRICT_ANSI__
5044         ;;
5045     linux)
5046         enable section_data_rel_ro
5047         enabled_any arm aarch64 && enable_weak linux_perf
5048         ;;
5049     irix*)
5050         target_os=irix
5051         ranlib="echo ignoring ranlib"
5052         ;;
5053     os/2*)
5054         strip="lxlite -CS"
5055         striptype=""
5056         objformat="aout"
5057         add_cppflags -D_GNU_SOURCE
5058         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5059         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5060         LIBSUF="_s.a"
5061         SLIBPREF=""
5062         SLIBSUF=".dll"
5063         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5064         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5065         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5066             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5067             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5068             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5069             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5070         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5071             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5072         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5073         SLIB_INSTALL_LINKS=
5074         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5075         enable dos_paths
5076         enable_weak os2threads
5077         ;;
5078     gnu/kfreebsd)
5079         add_cppflags -D_BSD_SOURCE
5080         ;;
5081     gnu)
5082         ;;
5083     qnx)
5084         add_cppflags -D_QNX_SOURCE
5085         network_extralibs="-lsocket"
5086         ;;
5087     symbian)
5088         SLIBSUF=".dll"
5089         enable dos_paths
5090         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5091         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5092         add_ldflags -Wl,--target1-abs,--no-undefined \
5093                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5094                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5095         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5096                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5097                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5098         ;;
5099     minix)
5100         ;;
5101     none)
5102         ;;
5103     *)
5104         die "Unknown OS '$target_os'."
5105         ;;
5106 esac
5107
5108 # test if creating links works
5109 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5110 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5111 mkdir "$link_dest"
5112 $ln_s "$link_dest" "$link_name"
5113 touch "$link_dest/test_file"
5114 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5115     # create link to source path
5116     [ -e src ] && rm src
5117     $ln_s "$source_path" src
5118     source_link=src
5119 else
5120     # creating directory links doesn't work
5121     # fall back to using the full source path
5122     source_link="$source_path"
5123 fi
5124 # cleanup
5125 rm -r "$link_dest"
5126 rm -r "$link_name"
5127
5128 # determine libc flavour
5129
5130 probe_libc(){
5131     pfx=$1
5132     pfx_no_=${pfx%_}
5133     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5134     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5135         eval ${pfx}libc_type=uclibc
5136         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5137     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5138         eval ${pfx}libc_type=glibc
5139         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5140     # MinGW headers can be installed on Cygwin, so check for newlib first.
5141     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5142         eval ${pfx}libc_type=newlib
5143         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5144     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5145     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5146         eval ${pfx}libc_type=mingw64
5147         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5148             add_compat msvcrt/snprintf.o
5149             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5150         fi
5151         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5152         eval test \$${pfx_no_}cc_type = "gcc" &&
5153             add_${pfx}cppflags -D__printf__=__gnu_printf__
5154     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5155          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5156         eval ${pfx}libc_type=mingw32
5157         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5158             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5159             die "ERROR: MinGW32 runtime version must be >= 3.15."
5160         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5161         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5162             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5163         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5164             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5165         eval test \$${pfx_no_}cc_type = "gcc" &&
5166             add_${pfx}cppflags -D__printf__=__gnu_printf__
5167     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5168         eval ${pfx}libc_type=msvcrt
5169         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5170             if [ "$pfx" = host_ ]; then
5171                 add_host_cppflags -Dsnprintf=_snprintf
5172             else
5173                 add_compat strtod.o strtod=avpriv_strtod
5174                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5175                                              _snprintf=avpriv_snprintf  \
5176                                              vsnprintf=avpriv_vsnprintf
5177             fi
5178         fi
5179         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5180         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5181         # 0x601 by default unless something else is set by the user.
5182         # This can easily lead to us detecting functions only present
5183         # in such new versions and producing binaries requiring windows 7.0.
5184         # Therefore explicitly set the default to XP unless the user has
5185         # set something else on the command line.
5186         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5187         # family. For these cases, configure is free to use any functions
5188         # found in the SDK headers by default. (Alternatively, we could force
5189         # _WIN32_WINNT to 0x0602 in that case.)
5190         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5191             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5192 #ifdef WINAPI_FAMILY
5193 #include <winapifamily.h>
5194 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5195 #error not desktop
5196 #endif
5197 #endif
5198 EOF
5199         if [ "$pfx" = "" ]; then
5200             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5201             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5202         fi
5203     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5204         eval ${pfx}libc_type=klibc
5205     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5206         eval ${pfx}libc_type=bionic
5207     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5208         eval ${pfx}libc_type=solaris
5209         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5210     fi
5211     check_${pfx}cc <<EOF
5212 #include <time.h>
5213 void *v = localtime_r;
5214 EOF
5215 test "$?" != 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
5216 #include <time.h>
5217 void *v = localtime_r;
5218 EOF
5219
5220     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5221 }
5222
5223 probe_libc
5224 probe_libc host_
5225
5226 # hacks for compiler/libc/os combinations
5227
5228 case $libc_type in
5229     bionic)
5230         add_compat strtod.o strtod=avpriv_strtod
5231         ;;
5232 esac
5233
5234 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5235     add_cppflags '-I\$(SRC_PATH)/compat/float'
5236
5237 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5238
5239 set_default libdir
5240 : ${shlibdir_default:="$libdir"}
5241 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5242
5243 set_default $PATHS_LIST
5244 set_default nm
5245
5246 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5247
5248 enable_weak_pic() {
5249     disabled pic && return
5250     enable pic
5251     add_cppflags -DPIC
5252     case "$target_os" in
5253     mingw*|cygwin*|win*)
5254         ;;
5255     *)
5256         add_cflags -fPIC
5257         add_asflags -fPIC
5258         ;;
5259     esac
5260 }
5261
5262 enabled pic && enable_weak_pic
5263
5264 check_cc <<EOF || die "Symbol mangling check failed."
5265 int ff_extern;
5266 EOF
5267 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5268 extern_prefix=${sym%%ff_extern*}
5269
5270 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5271
5272 _restrict=
5273 for restrict_keyword in restrict __restrict__ __restrict; do
5274     check_cc <<EOF && _restrict=$restrict_keyword && break
5275 void foo(char * $restrict_keyword p);
5276 EOF
5277 done
5278
5279 check_cc <<EOF && enable pragma_deprecated
5280 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5281 EOF
5282
5283 check_cc <<EOF || die "endian test failed"
5284 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5285 EOF
5286 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5287
5288 check_cc <<EOF && enable const_nan
5289 #include <math.h>
5290 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5291 EOF
5292
5293 if ! enabled ppc64 || enabled bigendian; then
5294     disable vsx
5295 fi
5296
5297 check_gas() {
5298     log "check_gas using '$as' as AS"
5299     # :vararg is used on aarch64, arm and ppc altivec
5300     check_as <<EOF || return 1
5301 .macro m n, y:vararg=0
5302 \n: .int \y
5303 .endm
5304 m x
5305 EOF
5306     # .altmacro is only used in arm asm
5307     ! enabled arm || check_as <<EOF || return 1
5308 .altmacro
5309 EOF
5310     enable gnu_as
5311     return 0
5312 }
5313
5314 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5315     nogas=:
5316     enabled_any arm aarch64 && nogas=die
5317     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5318     as_noop=-v
5319
5320     case $as_type in
5321         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5322         gcc)  gaspp_as_type=gas ;;
5323         *)    gaspp_as_type=$as_type ;;
5324     esac
5325
5326     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5327
5328     test "${as#*gas-preprocessor.pl}" != "$as" ||
5329     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5330         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5331
5332     if ! check_gas ; then
5333         as=${gas:=$as}
5334         check_gas || \
5335             $nogas "GNU assembler not found, install/update gas-preprocessor"
5336     fi
5337
5338     check_as <<EOF && enable as_func
5339 .func test
5340 .endfunc
5341 EOF
5342 fi
5343
5344 check_inline_asm inline_asm_labels '"1:\n"'
5345
5346 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5347
5348 if enabled aarch64; then
5349     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5350     # internal assembler in clang 3.3 does not support this instruction
5351     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5352     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5353
5354     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5355
5356 elif enabled alpha; then
5357
5358     check_cflags -mieee
5359
5360 elif enabled arm; then
5361
5362     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5363
5364     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5365 float func(float a, float b){ return a+b; }
5366 EOF
5367
5368     enabled thumb && check_cflags -mthumb || check_cflags -marm
5369
5370     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5371         enable vfp_args
5372     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5373         enable vfp_args
5374     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5375         case "${cross_prefix:-$cc}" in
5376             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5377             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5378 __asm__ (".eabi_attribute 28, 1");
5379 int main(void) { return 0; }
5380 EOF
5381         esac
5382         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5383     fi
5384
5385     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5386     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5387     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5388     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5389     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5390     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5391     enabled setend  && check_insn setend  'setend be'
5392
5393     [ $target_os = linux ] || [ $target_os = android ] ||
5394         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5395             $ARCH_EXT_LIST_ARM
5396
5397     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5398
5399     check_as <<EOF && enable as_arch_directive
5400 .arch armv7-a
5401 EOF
5402     check_as <<EOF && enable as_fpu_directive
5403 .fpu neon
5404 EOF
5405
5406     # llvm's integrated assembler supports .object_arch from llvm 3.5
5407     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5408         check_as <<EOF && enable as_object_arch
5409 .object_arch armv4
5410 EOF
5411
5412     # MS armasm fails to assemble our PIC constructs
5413     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5414
5415 elif enabled mips; then
5416
5417     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5418     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5419     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5420
5421     # Enable minimum ISA based on selected options
5422     if enabled mips64; then
5423         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5424         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5425         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5426     else
5427         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5428         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5429         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5430         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5431     fi
5432
5433     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5434     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5435     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5436     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5437     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5438
5439     if enabled bigendian && enabled msa; then
5440         disable msa
5441     fi
5442
5443 elif enabled parisc; then
5444
5445     if enabled gcc; then
5446         case $($cc -dumpversion) in
5447             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5448         esac
5449     fi
5450
5451 elif enabled ppc; then
5452
5453     enable local_aligned
5454
5455     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5456     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5457     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5458     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5459
5460     if enabled altivec; then
5461         check_cflags -maltivec -mabi=altivec
5462
5463         # check if our compiler supports Motorola AltiVec C API
5464         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5465                                  vector signed int v2 = (vector signed int) { 1 };
5466                                  v1 = vec_add(v1, v2);" ||
5467             disable altivec
5468
5469         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5470     fi
5471
5472     if enabled vsx; then
5473         check_cflags -mvsx &&
5474         check_code cc altivec.h "int v[4] = { 0 };
5475                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5476             disable vsx
5477     fi
5478
5479     if enabled power8; then
5480         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5481     fi
5482
5483 elif enabled x86; then
5484
5485     check_builtin rdtsc    intrin.h   "__rdtsc()"
5486     check_builtin mm_empty mmintrin.h "_mm_empty()"
5487
5488     enable local_aligned
5489
5490     # check whether EBP is available on x86
5491     # As 'i' is stored on the stack, this program will crash
5492     # if the base pointer is used to access it because the
5493     # base pointer is cleared in the inline assembly code.
5494     check_exec_crash <<EOF && enable ebp_available
5495 volatile int i=0;
5496 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5497 return i;
5498 EOF
5499
5500     # check whether EBX is available on x86
5501     check_inline_asm ebx_available '""::"b"(0)' &&
5502         check_inline_asm ebx_available '"":::"%ebx"'
5503
5504     # check whether xmm clobbers are supported
5505     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5506
5507     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5508         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5509
5510     # check whether binutils is new enough to compile SSSE3/MMXEXT
5511     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5512     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5513
5514     probe_x86asm(){
5515         x86asmexe_probe=$1
5516         if check_cmd $x86asmexe_probe -v; then
5517             x86asmexe=$x86asmexe_probe
5518             x86asm_type=nasm
5519             x86asm_debug="-g -F dwarf"
5520             X86ASMDEP=
5521             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5522         elif check_cmd $x86asmexe_probe --version; then
5523             x86asmexe=$x86asmexe_probe
5524             x86asm_type=yasm
5525             x86asm_debug="-g dwarf2"
5526             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5527             X86ASM_DEPFLAGS=
5528         fi
5529         check_x86asm "movbe ecx, [5]" && enable x86asm
5530     }
5531
5532     if ! disabled_any asm mmx x86asm; then
5533         disable x86asm
5534         for program in $x86asmexe nasm yasm; do
5535             probe_x86asm $program && break
5536         done
5537         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5538         X86ASMFLAGS="-f $objformat"
5539         enabled pic               && append X86ASMFLAGS "-DPIC"
5540         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5541         case "$objformat" in
5542             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5543         esac
5544
5545         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5546         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5547         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5548         check_x86asm "CPU amdnop" || disable cpunop
5549     fi
5550
5551     case "$cpu" in
5552         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5553             disable fast_clz
5554         ;;
5555     esac
5556
5557 fi
5558
5559 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5560
5561 check_ldflags -Wl,--as-needed
5562 check_ldflags -Wl,-z,noexecstack
5563
5564 if ! disabled network; then
5565     check_func getaddrinfo $network_extralibs
5566     check_func inet_aton $network_extralibs
5567
5568     check_type netdb.h "struct addrinfo"
5569     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5570     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5571     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5572     check_type poll.h "struct pollfd"
5573     check_type netinet/sctp.h "struct sctp_event_subscribe"
5574     check_struct "sys/socket.h" "struct msghdr" msg_flags
5575     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5576     check_type netinet/in.h "struct sockaddr_in6"
5577     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5578     check_type "sys/types.h sys/socket.h" socklen_t
5579
5580     # Prefer arpa/inet.h over winsock2
5581     if check_header arpa/inet.h ; then
5582         check_func closesocket
5583     elif check_header winsock2.h ; then
5584         check_func_headers winsock2.h closesocket -lws2 &&
5585             network_extralibs="-lws2" ||
5586         { check_func_headers winsock2.h closesocket -lws2_32 &&
5587             network_extralibs="-lws2_32"; } || disable winsock2_h network
5588         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5589
5590         check_type ws2tcpip.h socklen_t
5591         check_type ws2tcpip.h "struct addrinfo"
5592         check_type ws2tcpip.h "struct group_source_req"
5593         check_type ws2tcpip.h "struct ip_mreq_source"
5594         check_type ws2tcpip.h "struct ipv6_mreq"
5595         check_type winsock2.h "struct pollfd"
5596         check_struct winsock2.h "struct sockaddr" sa_len
5597         check_type ws2tcpip.h "struct sockaddr_in6"
5598         check_type ws2tcpip.h "struct sockaddr_storage"
5599     else
5600         disable network
5601     fi
5602 fi
5603
5604 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5605 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5606 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5607 check_builtin sarestart signal.h "SA_RESTART"
5608 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5609 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5610 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5611 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5612
5613 case "$custom_allocator" in
5614     jemalloc)
5615         # jemalloc by default does not use a prefix
5616         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5617     ;;
5618     tcmalloc)
5619         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5620         malloc_prefix=tc_
5621     ;;
5622 esac
5623
5624 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5625 check_func  ${malloc_prefix}memalign            && enable memalign
5626 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5627
5628 check_func  access
5629 check_func_headers stdlib.h arc4random
5630 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5631 check_func  fcntl
5632 check_func  fork
5633 check_func  gethrtime
5634 check_func  getopt
5635 check_func  getrusage
5636 check_func  gettimeofday
5637 check_func  isatty
5638 check_func  mkstemp
5639 check_func  mmap
5640 check_func  mprotect
5641 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5642 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5643 check_func  sched_getaffinity
5644 check_func  setrlimit
5645 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5646 check_func  strerror_r
5647 check_func  sysconf
5648 check_func  sysctl
5649 check_func  usleep
5650
5651 check_func_headers conio.h kbhit
5652 check_func_headers io.h setmode
5653 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5654 check_func_headers mach/mach_time.h mach_absolute_time
5655 check_func_headers stdlib.h getenv
5656 check_func_headers sys/stat.h lstat
5657
5658 check_func_headers windows.h GetProcessAffinityMask
5659 check_func_headers windows.h GetProcessTimes
5660 check_func_headers windows.h GetSystemTimeAsFileTime
5661 check_func_headers windows.h LoadLibrary
5662 check_func_headers windows.h MapViewOfFile
5663 check_func_headers windows.h PeekNamedPipe
5664 check_func_headers windows.h SetConsoleTextAttribute
5665 check_func_headers windows.h SetConsoleCtrlHandler
5666 check_func_headers windows.h Sleep
5667 check_func_headers windows.h VirtualAlloc
5668 check_struct windows.h "CONDITION_VARIABLE" Ptr
5669 check_func_headers glob.h glob
5670 enabled xlib &&
5671     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5672
5673 check_header direct.h
5674 check_header dirent.h
5675 check_header dxgidebug.h
5676 check_header dxva.h
5677 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5678 check_header io.h
5679 check_header libcrystalhd/libcrystalhd_if.h
5680 check_header malloc.h
5681 check_header net/udplite.h
5682 check_header poll.h
5683 check_header sys/param.h
5684 check_header sys/resource.h
5685 check_header sys/select.h
5686 check_header sys/time.h
5687 check_header sys/un.h
5688 check_header termios.h
5689 check_header unistd.h
5690 check_header valgrind/valgrind.h
5691 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5692 check_header windows.h
5693 check_header X11/extensions/XvMClib.h
5694 check_header asm/types.h
5695
5696 # it seems there are versions of clang in some distros that try to use the
5697 # gcc headers, which explodes for stdatomic
5698 # so we also check that atomics actually work here
5699 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5700
5701 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5702 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5703 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5704 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5705 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5706
5707 enabled appkit       && check_apple_framework AppKit
5708 enabled audiotoolbox && check_apple_framework AudioToolbox
5709 enabled avfoundation && check_apple_framework AVFoundation
5710 enabled coreimage    && check_apple_framework CoreImage
5711 enabled videotoolbox && check_apple_framework VideoToolbox
5712
5713 check_apple_framework CoreFoundation
5714 check_apple_framework CoreMedia
5715 check_apple_framework CoreVideo
5716
5717 enabled avfoundation && {
5718     disable coregraphics applicationservices
5719     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5720     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5721
5722 enabled videotoolbox && {
5723     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5724     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5725 }
5726
5727 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5728
5729 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5730 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5731 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5732 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5733 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5734
5735 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5736 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5737 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5738 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5739 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5740 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5741 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5742 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5743 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5744
5745 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5746
5747 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5748
5749 if ! disabled w32threads && ! enabled pthreads; then
5750     check_func_headers "windows.h process.h" _beginthreadex &&
5751         enable w32threads || disable w32threads
5752     if ! enabled w32threads && enabled winrt; then
5753         check_func_headers "windows.h" CreateThread &&
5754             enable w32threads || disable w32threads
5755     fi
5756 fi
5757
5758 # check for some common methods of building with pthread support
5759 # do this before the optional library checks as some of them require pthreads
5760 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5761     if check_lib pthreads pthread.h pthread_join   -pthread &&
5762        check_lib pthreads pthread.h pthread_create -pthread; then
5763         add_cflags -pthread
5764     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5765          check_lib pthreads pthread.h pthread_create -pthreads; then
5766         add_cflags -pthreads
5767     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5768          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5769         add_cflags -ldl -pthread
5770     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5771          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5772         :
5773     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5774          check_lib pthreads pthread.h pthread_create -lpthread; then
5775         :
5776     elif check_func pthread_join && check_func pthread_create; then
5777         enable pthreads
5778     fi
5779     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5780
5781     if enabled pthreads; then
5782         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5783         check_func pthread_cancel $pthreads_extralibs
5784     fi
5785 fi
5786
5787 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5788 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5789 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5790
5791 # On some systems dynamic loading requires no extra linker flags
5792 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5793
5794 check_lib libm math.h sin -lm
5795
5796 atan2f_args=2
5797 copysign_args=2
5798 hypot_args=2
5799 ldexpf_args=2
5800 powf_args=2
5801
5802 for func in $MATH_FUNCS; do
5803     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5804 done
5805
5806 for func in $COMPLEX_FUNCS; do
5807     eval check_complexfunc $func \${${func}_args:-1}
5808 done
5809
5810 # these are off by default, so fail if requested and not available
5811 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5812 enabled cuvid             && { enabled cuda ||
5813                                die "ERROR: CUVID requires CUDA"; }
5814 enabled nvdec             && { enabled cuda ||
5815                                die "ERROR: NVDEC hwaccel requires CUDA"; }
5816 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5817 enabled decklink          && { require_header DeckLinkAPI.h &&
5818                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5819 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5820 enabled frei0r            && require_header frei0r.h
5821 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5822 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5823 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5824 enabled ladspa            && require_header ladspa.h
5825 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5826 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5827 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5828 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5829 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5830                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5831                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5832 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5833 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5834 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5835 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5836                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5837                                  warn "using libfdk without pkg-config"; } }
5838 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"
5839 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5840 enabled fontconfig        && enable libfontconfig
5841 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5842 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5843 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5844 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5845                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5846 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5847                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5848                                done || die "ERROR: libgsm not found"; }
5849 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5850 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5851 # While it may appear that require is being used as a pkg-config
5852 # fallback for libmfx, it is actually being used to detect a different
5853 # installation route altogether.  If libmfx is installed via the Intel
5854 # Media SDK or Intel Media Server Studio, these don't come with
5855 # pkg-config support.  Instead, users should make sure that the build
5856 # can find the libraries and headers through other means.
5857 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5858                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5859 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5860 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5861 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5862 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5863                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5864                                die "ERROR: libnpp not found"; }
5865 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5866 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5867 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5868                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5869                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5870                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5871 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5872 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5873                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5874 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5875 enabled libopus           && {
5876     enabled libopus_decoder && {
5877         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5878     }
5879     enabled libopus_encoder && {
5880         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5881     }
5882 }
5883 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5884 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5885 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5886 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5887 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5888 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5889                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5890 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5891 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5892 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5893 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5894 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5895 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5896 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5897                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5898                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5899 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5900 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5901 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5902 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5903 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5904                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5905
5906 enabled libvpx            && {
5907     enabled libvpx_vp8_decoder && {
5908         check_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5909             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5910                 die "ERROR: libvpx decoder version must be >=0.9.1";
5911     }
5912     enabled libvpx_vp8_encoder && {
5913         check_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5914             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5915                 die "ERROR: libvpx encoder version must be >=0.9.7";
5916     }
5917     enabled libvpx_vp9_decoder && {
5918         check_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5919             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5920     }
5921     enabled libvpx_vp9_encoder && {
5922         check_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5923             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5924     }
5925     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5926         die "libvpx enabled but no supported decoders found"
5927     fi
5928 }
5929
5930 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5931 enabled libwebp           && {
5932     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5933     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5934 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5935                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5936                                  warn "using libx264 without pkg-config"; } } &&
5937                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5938                              { check_cpp_condition x264.h "X264_MPEG2" &&
5939                                enable libx262; }
5940 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5941                              require_cpp_condition x265.h "X265_BUILD >= 68"
5942 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5943 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5944 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
5945 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5946 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5947                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5948                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5949 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5950 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5951 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5952                                { ! enabled cross_compile &&
5953                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5954                                  add_ldflags -L/opt/vc/lib/ &&
5955                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5956                                die "ERROR: mmal not found" &&
5957                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5958 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5959                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5960                                die "ERROR: openal not found"; } &&
5961                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5962                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5963 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5964                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5965                                die "ERROR: opencl not found"; } &&
5966                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5967                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5968                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5969 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5970                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5971                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5972                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5973                                die "ERROR: opengl not found."
5974                              }
5975 enabled omx               && require_header OMX_Core.h
5976 enabled omx_rpi           && { check_header OMX_Core.h ||
5977                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5978                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5979 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5980                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5981                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5982                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5983                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5984                                die "ERROR: openssl not found"; }
5985 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
5986                                  die "ERROR : Rockchip MPP was not found."; } &&
5987                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
5988                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
5989                                { enabled libdrm ||
5990                                  die "ERROR: rkmpp requires --enable-libdrm"; }
5991                              }
5992
5993 if enabled gcrypt; then
5994     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5995     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5996         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5997         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5998         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5999             die "ERROR: gcrypt not found"
6000         add_cflags $gcrypt_cflags
6001     else
6002         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6003     fi
6004 fi
6005
6006 if enabled sdl2; then
6007     SDL2_CONFIG="${cross_prefix}sdl2-config"
6008     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6009         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6010             disable sdl2
6011     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6012         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6013         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6014         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6015         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6016         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6017             enable sdl2
6018     fi
6019     if test $target_os = "mingw32"; then
6020         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6021     fi
6022 fi
6023
6024 if enabled decklink; then
6025     case $target_os in
6026         mingw32*|mingw64*|win32|win64)
6027             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6028             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6029             ;;
6030     esac
6031 fi
6032
6033 enabled securetransport &&
6034     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6035     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6036         disable securetransport
6037
6038 enabled securetransport &&
6039     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6040
6041 enabled schannel &&
6042     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6043     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6044     schannel_extralibs="-lsecur32" ||
6045         disable schannel
6046
6047 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6048 enabled makeinfo \
6049     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6050     && enable makeinfo_html || disable makeinfo_html
6051 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6052 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6053 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6054 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6055
6056 # check V4L2 codecs available in the API
6057 check_header linux/fb.h
6058 check_header linux/videodev2.h
6059 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6060 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6061 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6062 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6063 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6064 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6065 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6066 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6067 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6068 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6069 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6070
6071 check_header sys/videoio.h
6072 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6073
6074 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6075 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6076 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6077 # w32api 3.12 had it defined wrong
6078 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6079
6080 check_type "dshow.h" IBaseFilter
6081
6082 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6083 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6084     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6085     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6086     check_header "dev/ic/bt8xx.h"
6087
6088 if check_struct sys/soundcard.h audio_buf_info bytes; then
6089     enable_sanitized sys/soundcard.h
6090 else
6091     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6092     #include <sys/soundcard.h>
6093     audio_buf_info abc;
6094 EOF
6095 fi
6096
6097 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6098     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6099
6100 enabled libjack &&
6101     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6102
6103 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6104
6105 if enabled libcdio; then
6106     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6107     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6108     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6109     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6110     die "ERROR: No usable libcdio/cdparanoia found"
6111 fi
6112
6113 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6114     disable libxcb_shm libxcb_shape libxcb_xfixes
6115
6116 if enabled libxcb; then
6117     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6118     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6119     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6120 fi
6121
6122 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6123
6124 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6125 # the desktop api partition
6126 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6127 #ifdef WINAPI_FAMILY
6128 #include <winapifamily.h>
6129 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6130 #error desktop, not uwp
6131 #else
6132 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6133 #endif
6134 #else
6135 #error no family set
6136 #endif
6137 EOF
6138
6139 enabled vaapi &&
6140     check_lib vaapi va/va.h vaInitialize -lva
6141
6142 enabled vaapi &&
6143     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6144     disable vaapi
6145
6146 enabled vaapi &&
6147     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6148
6149 enabled vaapi &&
6150     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6151
6152 enabled vaapi &&
6153     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6154     enable vaapi_1
6155
6156 enabled vdpau &&
6157     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6158     disable vdpau
6159
6160 enabled vdpau &&
6161     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6162
6163 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6164
6165 if enabled x86; then
6166     case $target_os in
6167         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6168             ;;
6169         *)
6170             disable cuda cuvid nvdec nvenc
6171             ;;
6172     esac
6173 else
6174     disable cuda cuvid nvdec nvenc
6175 fi
6176
6177 enabled nvenc &&
6178     check_cc -I$source_path <<EOF || disable nvenc
6179 #include "compat/nvenc/nvEncodeAPI.h"
6180 NV_ENCODE_API_FUNCTION_LIST flist;
6181 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6182 int main(void) { return 0; }
6183 EOF
6184
6185 # Funny iconv installations are not unusual, so check it after all flags have been set
6186 if enabled libc_iconv; then
6187     check_func_headers iconv.h iconv
6188 elif enabled iconv; then
6189     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6190 fi
6191
6192 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6193
6194 # add some useful compiler flags if supported
6195 check_cflags -Wdeclaration-after-statement
6196 check_cflags -Wall
6197 check_cflags -Wdisabled-optimization
6198 check_cflags -Wpointer-arith
6199 check_cflags -Wredundant-decls
6200 check_cflags -Wwrite-strings
6201 check_cflags -Wtype-limits
6202 check_cflags -Wundef
6203 check_cflags -Wmissing-prototypes
6204 check_cflags -Wno-pointer-to-int-cast
6205 check_cflags -Wstrict-prototypes
6206 check_cflags -Wempty-body
6207
6208 if enabled extra_warnings; then
6209     check_cflags -Wcast-qual
6210     check_cflags -Wextra
6211     check_cflags -Wpedantic
6212 fi
6213
6214 check_disable_warning(){
6215     warning_flag=-W${1#-Wno-}
6216     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6217 }
6218
6219 test_cflags -Werror=unused-command-line-argument &&
6220     append unknown_warning_flags "-Werror=unused-command-line-argument"
6221 test_cflags -Werror=unknown-warning-option &&
6222     append unknown_warning_flags "-Werror=unknown-warning-option"
6223
6224 check_disable_warning -Wno-parentheses
6225 check_disable_warning -Wno-switch
6226 check_disable_warning -Wno-format-zero-length
6227 check_disable_warning -Wno-pointer-sign
6228 check_disable_warning -Wno-unused-const-variable
6229 check_disable_warning -Wno-bool-operation
6230
6231 check_disable_warning_headers(){
6232     warning_flag=-W${1#-Wno-}
6233     test_cflags $warning_flag && add_cflags_headers $1
6234 }
6235
6236 check_disable_warning_headers -Wno-deprecated-declarations
6237 check_disable_warning_headers -Wno-unused-variable
6238
6239 check_cc <<EOF && enable blocks_extension
6240 void (^block)(void);
6241 EOF
6242
6243 # add some linker flags
6244 check_ldflags -Wl,--warn-common
6245 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6246 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6247 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6248
6249 # add some strip flags
6250 check_stripflags -x
6251
6252 enabled neon_clobber_test &&
6253     check_ldflags -Wl,--wrap,avcodec_open2              \
6254                   -Wl,--wrap,avcodec_decode_audio4      \
6255                   -Wl,--wrap,avcodec_decode_video2      \
6256                   -Wl,--wrap,avcodec_decode_subtitle2   \
6257                   -Wl,--wrap,avcodec_encode_audio2      \
6258                   -Wl,--wrap,avcodec_encode_video2      \
6259                   -Wl,--wrap,avcodec_encode_subtitle    \
6260                   -Wl,--wrap,avcodec_send_packet        \
6261                   -Wl,--wrap,avcodec_receive_packet     \
6262                   -Wl,--wrap,avcodec_send_frame         \
6263                   -Wl,--wrap,avcodec_receive_frame      \
6264                   -Wl,--wrap,swr_convert                \
6265                   -Wl,--wrap,avresample_convert ||
6266     disable neon_clobber_test
6267
6268 enabled xmm_clobber_test &&
6269     check_ldflags -Wl,--wrap,avcodec_open2              \
6270                   -Wl,--wrap,avcodec_decode_audio4      \
6271                   -Wl,--wrap,avcodec_decode_video2      \
6272                   -Wl,--wrap,avcodec_decode_subtitle2   \
6273                   -Wl,--wrap,avcodec_encode_audio2      \
6274                   -Wl,--wrap,avcodec_encode_video2      \
6275                   -Wl,--wrap,avcodec_encode_subtitle    \
6276                   -Wl,--wrap,avcodec_send_packet        \
6277                   -Wl,--wrap,avcodec_receive_packet     \
6278                   -Wl,--wrap,avcodec_send_frame         \
6279                   -Wl,--wrap,avcodec_receive_frame      \
6280                   -Wl,--wrap,swr_convert                \
6281                   -Wl,--wrap,avresample_convert         \
6282                   -Wl,--wrap,sws_scale ||
6283     disable xmm_clobber_test
6284
6285 check_ld "cc" <<EOF && enable proper_dce
6286 extern const int array[512];
6287 static inline int func(void) { return array[0]; }
6288 int main(void) { return 0; }
6289 EOF
6290
6291 if enabled proper_dce; then
6292     echo "X { local: *; };" > $TMPV
6293     if test_ldflags -Wl,${version_script},$TMPV; then
6294         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6295         quotes='""'
6296         check_cc <<EOF && enable symver_asm_label
6297 void ff_foo(void) __asm__ ("av_foo@VERSION");
6298 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6299 EOF
6300         check_cc <<EOF && enable symver_gnu_asm
6301 __asm__(".symver ff_foo,av_foo@VERSION");
6302 void ff_foo(void) {}
6303 EOF
6304     fi
6305 fi
6306
6307 if [ -z "$optflags" ]; then
6308     if enabled small; then
6309         optflags=$cflags_size
6310     elif enabled optimizations; then
6311         optflags=$cflags_speed
6312     else
6313         optflags=$cflags_noopt
6314     fi
6315 fi
6316
6317 if [ -z "$nvccflags" ]; then
6318     nvccflags=$nvccflags_default
6319 fi
6320
6321 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6322     nvccflags="$nvccflags -m64"
6323 else
6324     nvccflags="$nvccflags -m32"
6325 fi
6326
6327 check_optflags(){
6328     check_cflags "$@"
6329     enabled lto && check_ldflags "$@"
6330 }
6331
6332 check_optflags $optflags
6333 check_optflags -fno-math-errno
6334 check_optflags -fno-signed-zeros
6335
6336 if enabled lto; then
6337     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6338     check_cflags  -flto
6339     check_ldflags -flto $cpuflags
6340     disable inline_asm_direct_symbol_refs
6341 fi
6342
6343 enabled ftrapv && check_cflags -ftrapv
6344
6345 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6346 int x;
6347 EOF
6348
6349
6350 if enabled icc; then
6351     # Just warnings, no remarks
6352     check_cflags -w1
6353     # -wd: Disable following warnings
6354     # 144, 167, 556: -Wno-pointer-sign
6355     # 188: enumerated type mixed with another type
6356     # 1292: attribute "foo" ignored
6357     # 1419: external declaration in primary source file
6358     # 10006: ignoring unknown option -fno-signed-zeros
6359     # 10148: ignoring unknown option -Wno-parentheses
6360     # 10156: ignoring option '-W'; no argument required
6361     # 13200: No EMMS instruction before call to function
6362     # 13203: No EMMS instruction before return from function
6363     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6364     # 11030: Warning unknown option --as-needed
6365     # 10156: ignoring option '-export'; no argument required
6366     check_ldflags -wd10156,11030
6367     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6368     enable ebp_available
6369     # The test above does not test linking
6370     enabled lto && disable symver_asm_label
6371     if enabled x86_32; then
6372         icc_version=$($cc -dumpversion)
6373         test ${icc_version%%.*} -ge 11 &&
6374             check_cflags -falign-stack=maintain-16-byte ||
6375             disable aligned_stack
6376     fi
6377 elif enabled gcc; then
6378     check_optflags -fno-tree-vectorize
6379     check_cflags -Werror=format-security
6380     check_cflags -Werror=implicit-function-declaration
6381     check_cflags -Werror=missing-prototypes
6382     check_cflags -Werror=return-type
6383     check_cflags -Werror=vla
6384     check_cflags -Wformat
6385     check_cflags -fdiagnostics-color=auto
6386     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6387 elif enabled llvm_gcc; then
6388     check_cflags -mllvm -stack-alignment=16
6389 elif enabled clang; then
6390     check_cflags -mllvm -stack-alignment=16
6391     check_cflags -mstack-alignment=16
6392     check_cflags -Qunused-arguments
6393     check_cflags -Werror=implicit-function-declaration
6394     check_cflags -Werror=missing-prototypes
6395     check_cflags -Werror=return-type
6396 elif enabled cparser; then
6397     add_cflags -Wno-missing-variable-declarations
6398     add_cflags -Wno-empty-statement
6399 elif enabled armcc; then
6400     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6401     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6402     # 2523: use of inline assembly is deprecated
6403     add_cflags -W${armcc_opt},--diag_suppress=2523
6404     add_cflags -W${armcc_opt},--diag_suppress=1207
6405     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6406     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6407     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6408     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6409 elif enabled pathscale; then
6410     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6411     disable inline_asm
6412 elif enabled_any msvc icl; then
6413     enabled x86_32 && disable aligned_stack
6414     enabled_all x86_32 debug && add_cflags -Oy-
6415     enabled debug && add_ldflags -debug
6416     enable pragma_deprecated
6417     if enabled icl; then
6418         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6419         # (correctly) on icl 13.x.
6420         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6421             add_cflags -Qansi-alias
6422         # Some inline asm is not compilable in debug
6423         if enabled debug; then
6424             disable ebp_available
6425             disable ebx_available
6426         fi
6427     fi
6428     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6429     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6430     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6431     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6432     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6433     # MSVC 2013 and newer can handle it fine.
6434     # If this declspec fails, force including stdlib.h before the restrict redefinition
6435     # happens in config.h.
6436     if [ $_restrict != restrict ]; then
6437         check_cc <<EOF || add_cflags -FIstdlib.h
6438 __declspec($_restrict) void* foo(int);
6439 EOF
6440     fi
6441     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6442     # Issue has been fixed in MSVC v19.00.24218.
6443     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6444         check_cflags -d2SSAOptimizer-
6445     # enable utf-8 source processing on VS2015 U2 and newer
6446     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6447         add_cflags -utf-8
6448 fi
6449
6450 for pfx in "" host_; do
6451     varname=${pfx%_}cc_type
6452     eval "type=\$$varname"
6453     if [ "$type" = "msvc" ]; then
6454         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6455 static inline int foo(int a) { return a; }
6456 EOF
6457     fi
6458 done
6459
6460 case $as_type in
6461     clang)
6462         add_asflags -Qunused-arguments
6463     ;;
6464 esac
6465
6466 case $ld_type in
6467     clang)
6468         check_ldflags -Qunused-arguments
6469     ;;
6470 esac
6471
6472 enable frame_thread_encoder
6473
6474 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6475
6476 check_deps $CONFIG_LIST       \
6477            $CONFIG_EXTRA      \
6478            $HAVE_LIST         \
6479            $ALL_COMPONENTS    \
6480
6481 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"
6482
6483
6484 if test $target_os = "haiku"; then
6485     disable memalign
6486     disable posix_memalign
6487 fi
6488
6489 flatten_extralibs(){
6490     unset nested_entries
6491     list_name=$1
6492     eval list=\$${1}
6493     for entry in $list; do
6494         entry_copy=$entry
6495         resolve entry_copy
6496         append nested_entries $(filter '*_extralibs' $entry_copy)
6497         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6498         eval $entry="\$flat_entries"
6499     done
6500     append $list_name "$nested_entries"
6501
6502     resolve nested_entries
6503     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6504         flatten_extralibs $list_name
6505     fi
6506 }
6507
6508 flatten_extralibs_wrapper(){
6509     list_name=$1
6510     flatten_extralibs $list_name
6511     unique $list_name
6512     resolve $list_name
6513     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6514     eval printf \''%s'\' \""\$$list_name"\"
6515 }
6516
6517 for linkunit in $LIBRARY_LIST; do
6518     unset current_extralibs
6519     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6520     for comp in ${components}; do
6521         enabled $comp || continue
6522         comp_extralibs="${comp}_extralibs"
6523         append current_extralibs $comp_extralibs
6524     done
6525     eval prepend ${linkunit}_extralibs $current_extralibs
6526 done
6527
6528 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6529     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6530 done
6531
6532 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6533
6534 for thread in $THREADS_LIST; do
6535     if enabled $thread; then
6536         test -n "$thread_type" &&
6537             die "ERROR: Only one thread type must be selected." ||
6538             thread_type="$thread"
6539     fi
6540 done
6541
6542 if disabled stdatomic; then
6543     if enabled atomics_gcc; then
6544         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6545     elif enabled atomics_win32; then
6546         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6547     elif enabled atomics_suncc; then
6548         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6549     elif enabled pthreads; then
6550         add_compat atomics/pthread/stdatomic.o
6551         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6552     else
6553         enabled threads && die "Threading is enabled, but no atomics are available"
6554         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6555     fi
6556 fi
6557
6558 # Check if requested libraries were found.
6559 for lib in $AUTODETECT_LIBS; do
6560     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6561 done
6562
6563 enabled zlib && add_cppflags -DZLIB_CONST
6564
6565 # conditional library dependencies, in linking order
6566 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6567 enabled afir_filter         && prepend avfilter_deps "avcodec"
6568 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6569 enabled aresample_filter    && prepend avfilter_deps "swresample"
6570 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6571 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6572 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6573 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6574 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6575 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6576 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6577 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6578 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6579 enabled pan_filter          && prepend avfilter_deps "swresample"
6580 enabled pp_filter           && prepend avfilter_deps "postproc"
6581 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6582 enabled resample_filter && prepend avfilter_deps "avresample"
6583 enabled sab_filter          && prepend avfilter_deps "swscale"
6584 enabled scale_filter    && prepend avfilter_deps "swscale"
6585 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6586 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6587 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6588 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6589 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6590 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6591 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6592 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6593 enabled spp_filter          && prepend avfilter_deps "avcodec"
6594 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6595 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6596 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6597
6598 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6599
6600 #FIXME
6601 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6602
6603 enabled opus_decoder    && prepend avcodec_deps "swresample"
6604
6605 expand_deps(){
6606     lib_deps=${1}_deps
6607     eval "deps=\$$lib_deps"
6608     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6609     unique $lib_deps
6610 }
6611
6612 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6613 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6614
6615 map 'expand_deps $v' $LIBRARY_LIST
6616
6617 license="LGPL version 2.1 or later"
6618 if enabled nonfree; then
6619     license="nonfree and unredistributable"
6620 elif enabled gplv3; then
6621     license="GPL version 3 or later"
6622 elif enabled lgplv3; then
6623     license="LGPL version 3 or later"
6624 elif enabled gpl; then
6625     license="GPL version 2 or later"
6626 fi
6627
6628 if test "$quiet" != "yes"; then
6629
6630 echo "install prefix            $prefix"
6631 echo "source path               $source_path"
6632 echo "C compiler                $cc"
6633 echo "C library                 $libc_type"
6634 if test "$host_cc" != "$cc"; then
6635     echo "host C compiler           $host_cc"
6636     echo "host C library            $host_libc_type"
6637 fi
6638 echo "ARCH                      $arch ($cpu)"
6639 if test "$build_suffix" != ""; then
6640     echo "build suffix              $build_suffix"
6641 fi
6642 if test "$progs_suffix" != ""; then
6643     echo "progs suffix              $progs_suffix"
6644 fi
6645 if test "$extra_version" != ""; then
6646     echo "version string suffix     $extra_version"
6647 fi
6648 echo "big-endian                ${bigendian-no}"
6649 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6650 if enabled x86; then
6651     echo "standalone assembly       ${x86asm-no}"
6652     echo "x86 assembler             ${x86asmexe}"
6653     echo "MMX enabled               ${mmx-no}"
6654     echo "MMXEXT enabled            ${mmxext-no}"
6655     echo "3DNow! enabled            ${amd3dnow-no}"
6656     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6657     echo "SSE enabled               ${sse-no}"
6658     echo "SSSE3 enabled             ${ssse3-no}"
6659     echo "AESNI enabled             ${aesni-no}"
6660     echo "AVX enabled               ${avx-no}"
6661     echo "AVX2 enabled              ${avx2-no}"
6662     echo "XOP enabled               ${xop-no}"
6663     echo "FMA3 enabled              ${fma3-no}"
6664     echo "FMA4 enabled              ${fma4-no}"
6665     echo "i686 features enabled     ${i686-no}"
6666     echo "CMOV is fast              ${fast_cmov-no}"
6667     echo "EBX available             ${ebx_available-no}"
6668     echo "EBP available             ${ebp_available-no}"
6669 fi
6670 if enabled aarch64; then
6671     echo "NEON enabled              ${neon-no}"
6672     echo "VFP enabled               ${vfp-no}"
6673 fi
6674 if enabled arm; then
6675     echo "ARMv5TE enabled           ${armv5te-no}"
6676     echo "ARMv6 enabled             ${armv6-no}"
6677     echo "ARMv6T2 enabled           ${armv6t2-no}"
6678     echo "VFP enabled               ${vfp-no}"
6679     echo "NEON enabled              ${neon-no}"
6680     echo "THUMB enabled             ${thumb-no}"
6681 fi
6682 if enabled mips; then
6683     echo "MIPS FPU enabled          ${mipsfpu-no}"
6684     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6685     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6686     echo "MIPS MSA enabled          ${msa-no}"
6687     echo "LOONGSON MMI enabled      ${mmi-no}"
6688 fi
6689 if enabled ppc; then
6690     echo "AltiVec enabled           ${altivec-no}"
6691     echo "VSX enabled               ${vsx-no}"
6692     echo "POWER8 enabled            ${power8-no}"
6693     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6694     echo "dcbzl available           ${dcbzl-no}"
6695 fi
6696 echo "debug symbols             ${debug-no}"
6697 echo "strip symbols             ${stripping-no}"
6698 echo "optimize for size         ${small-no}"
6699 echo "optimizations             ${optimizations-no}"
6700 echo "static                    ${static-no}"
6701 echo "shared                    ${shared-no}"
6702 echo "postprocessing support    ${postproc-no}"
6703 echo "network support           ${network-no}"
6704 echo "threading support         ${thread_type-no}"
6705 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6706 echo "texi2html enabled         ${texi2html-no}"
6707 echo "perl enabled              ${perl-no}"
6708 echo "pod2man enabled           ${pod2man-no}"
6709 echo "makeinfo enabled          ${makeinfo-no}"
6710 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6711 test -n "$random_seed" &&
6712     echo "random seed               ${random_seed}"
6713 echo
6714
6715 echo "External libraries:"
6716 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6717 echo
6718
6719 echo "External libraries providing hardware acceleration:"
6720 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6721 echo
6722
6723 echo "Libraries:"
6724 print_enabled '' $LIBRARY_LIST | print_in_columns
6725 echo
6726
6727 echo "Programs:"
6728 print_enabled '' $PROGRAM_LIST | print_in_columns
6729 echo
6730
6731 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6732     echo "Enabled ${type}s:"
6733     eval list=\$$(toupper $type)_LIST
6734     print_enabled '_*' $list | print_in_columns
6735     echo
6736 done
6737
6738 if test -n "$ignore_tests"; then
6739     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6740     echo "Ignored FATE tests:"
6741     echo $ignore_tests | print_in_columns
6742     echo
6743 fi
6744
6745 echo "License: $license"
6746
6747 fi # test "$quiet" != "yes"
6748
6749 if test -n "$WARNINGS"; then
6750     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6751     enabled fatal_warnings && exit 1
6752 fi
6753
6754 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6755
6756 esc(){
6757     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6758 }
6759
6760 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6761
6762 enabled stripping || strip="echo skipping strip"
6763 enabled stripping || striptype=""
6764
6765 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6766
6767 cat > ffbuild/config.mak <<EOF
6768 # Automatically generated by configure - do not modify!
6769 ifndef FFMPEG_CONFIG_MAK
6770 FFMPEG_CONFIG_MAK=1
6771 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6772 prefix=$prefix
6773 LIBDIR=\$(DESTDIR)$libdir
6774 SHLIBDIR=\$(DESTDIR)$shlibdir
6775 INCDIR=\$(DESTDIR)$incdir
6776 BINDIR=\$(DESTDIR)$bindir
6777 DATADIR=\$(DESTDIR)$datadir
6778 DOCDIR=\$(DESTDIR)$docdir
6779 MANDIR=\$(DESTDIR)$mandir
6780 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6781 INSTALL_NAME_DIR=$install_name_dir
6782 SRC_PATH=$source_path
6783 SRC_LINK=$source_link
6784 ifndef MAIN_MAKEFILE
6785 SRC_PATH:=\$(SRC_PATH:.%=..%)
6786 endif
6787 CC_IDENT=$cc_ident
6788 ARCH=$arch
6789 INTRINSICS=$intrinsics
6790 EXTERN_PREFIX=$extern_prefix
6791 CC=$cc
6792 CXX=$cxx
6793 AS=$as
6794 OBJCC=$objcc
6795 LD=$ld
6796 DEPCC=$dep_cc
6797 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6798 DEPAS=$as
6799 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6800 X86ASM=$x86asmexe
6801 DEPX86ASM=$x86asmexe
6802 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6803 AR=$ar
6804 ARFLAGS=$arflags
6805 AR_O=$ar_o
6806 AR_CMD=$ar
6807 NM_CMD=$nm
6808 RANLIB=$ranlib
6809 STRIP=$strip
6810 STRIPTYPE=$striptype
6811 NVCC=$nvcc
6812 CP=cp -p
6813 LN_S=$ln_s
6814 CPPFLAGS=$CPPFLAGS
6815 CFLAGS=$CFLAGS
6816 CXXFLAGS=$CXXFLAGS
6817 OBJCFLAGS=$OBJCFLAGS
6818 ASFLAGS=$ASFLAGS
6819 NVCCFLAGS=$nvccflags
6820 AS_C=$AS_C
6821 AS_O=$AS_O
6822 OBJCC_C=$OBJCC_C
6823 OBJCC_E=$OBJCC_E
6824 OBJCC_O=$OBJCC_O
6825 CC_C=$CC_C
6826 CC_E=$CC_E
6827 CC_O=$CC_O
6828 CXX_C=$CXX_C
6829 CXX_O=$CXX_O
6830 NVCC_C=$NVCC_C
6831 NVCC_O=$NVCC_O
6832 LD_O=$LD_O
6833 X86ASM_O=$X86ASM_O
6834 LD_LIB=$LD_LIB
6835 LD_PATH=$LD_PATH
6836 WINDRES=$windres
6837 DEPWINDRES=$dep_cc
6838 DOXYGEN=$doxygen
6839 LDFLAGS=$LDFLAGS
6840 LDEXEFLAGS=$LDEXEFLAGS
6841 LDSOFLAGS=$LDSOFLAGS
6842 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6843 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6844 X86ASMFLAGS=$X86ASMFLAGS
6845 BUILDSUF=$build_suffix
6846 PROGSSUF=$progs_suffix
6847 FULLNAME=$FULLNAME
6848 LIBPREF=$LIBPREF
6849 LIBSUF=$LIBSUF
6850 LIBNAME=$LIBNAME
6851 SLIBPREF=$SLIBPREF
6852 SLIBSUF=$SLIBSUF
6853 EXESUF=$EXESUF
6854 EXTRA_VERSION=$extra_version
6855 CCDEP=$CCDEP
6856 CXXDEP=$CXXDEP
6857 CCDEP_FLAGS=$CCDEP_FLAGS
6858 ASDEP=$ASDEP
6859 ASDEP_FLAGS=$ASDEP_FLAGS
6860 X86ASMDEP=$X86ASMDEP
6861 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6862 CC_DEPFLAGS=$CC_DEPFLAGS
6863 AS_DEPFLAGS=$AS_DEPFLAGS
6864 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6865 HOSTCC=$host_cc
6866 HOSTLD=$host_ld
6867 HOSTCFLAGS=$host_cflags
6868 HOSTCPPFLAGS=$host_cppflags
6869 HOSTEXESUF=$HOSTEXESUF
6870 HOSTLDFLAGS=$host_ldflags
6871 HOSTEXTRALIBS=$host_extralibs
6872 DEPHOSTCC=$host_cc
6873 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6874 HOSTCCDEP=$HOSTCCDEP
6875 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6876 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6877 HOSTCC_C=$HOSTCC_C
6878 HOSTCC_O=$HOSTCC_O
6879 HOSTLD_O=$HOSTLD_O
6880 TARGET_EXEC=$target_exec $target_exec_args
6881 TARGET_PATH=$target_path
6882 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6883 CFLAGS-ffplay=${sdl2_cflags}
6884 CFLAGS_HEADERS=$CFLAGS_HEADERS
6885 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6886 EXTRALIBS=$extralibs
6887 COMPAT_OBJS=$compat_objs
6888 INSTALL=$install
6889 SLIBNAME=${SLIBNAME}
6890 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6891 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6892 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6893 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6894 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6895 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6896 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6897 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6898 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6899 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6900 NOREDZONE_FLAGS=$noredzone_flags
6901 LIBFUZZER_PATH=$libfuzzer_path
6902 IGNORE_TESTS=$ignore_tests
6903 EOF
6904
6905 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6906
6907 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6908     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6909 done
6910
6911 cat > $TMPH <<EOF
6912 /* Automatically generated by configure - do not modify! */
6913 #ifndef FFMPEG_CONFIG_H
6914 #define FFMPEG_CONFIG_H
6915 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6916 #define FFMPEG_LICENSE "$(c_escape $license)"
6917 #define CONFIG_THIS_YEAR 2017
6918 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6919 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6920 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6921 #define av_restrict $_restrict
6922 #define EXTERN_PREFIX "${extern_prefix}"
6923 #define EXTERN_ASM ${extern_prefix}
6924 #define BUILDSUF "$build_suffix"
6925 #define SLIBSUF "$SLIBSUF"
6926 #define HAVE_MMX2 HAVE_MMXEXT
6927 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6928 EOF
6929
6930 test -n "$assert_level" &&
6931     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6932
6933 test -n "$malloc_prefix" &&
6934     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6935
6936 if enabled x86asm; then
6937     append config_files $TMPASM
6938     cat > $TMPASM <<EOF
6939 ; Automatically generated by configure - do not modify!
6940 EOF
6941 fi
6942
6943 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6944
6945
6946 mkdir -p doc
6947 mkdir -p tests
6948 mkdir -p tests/api
6949 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6950
6951 print_config ARCH_   "$config_files" $ARCH_LIST
6952 print_config HAVE_   "$config_files" $HAVE_LIST
6953 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6954                                      $CONFIG_EXTRA      \
6955                                      $ALL_COMPONENTS    \
6956
6957 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6958 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6959
6960 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6961 cp_if_changed $TMPH config.h
6962 touch ffbuild/.config
6963
6964 enabled x86asm && cp_if_changed $TMPASM config.asm
6965
6966 cat > $TMPH <<EOF
6967 /* Generated by ffmpeg configure */
6968 #ifndef AVUTIL_AVCONFIG_H
6969 #define AVUTIL_AVCONFIG_H
6970 EOF
6971
6972 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6973
6974 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6975
6976 cp_if_changed $TMPH libavutil/avconfig.h
6977
6978 # generate the lists of enabled components
6979 print_enabled_components(){
6980     file=$1
6981     struct_name=$2
6982     name=$3
6983     shift 3
6984     echo "static const $struct_name * const $name[] = {" > $TMPH
6985     for c in $*; do
6986         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6987     done
6988     echo "    NULL };" >> $TMPH
6989     cp_if_changed $TMPH $file
6990 }
6991
6992 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6993 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6994
6995 # Settings for pkg-config files
6996
6997 cat > $TMPH <<EOF
6998 # Automatically generated by configure - do not modify!
6999 shared=$shared
7000 build_suffix=$build_suffix
7001 prefix=$prefix
7002 libdir=$libdir
7003 incdir=$incdir
7004 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7005 source_path=${source_path}
7006 LIBPREF=${LIBPREF}
7007 LIBSUF=${LIBSUF}
7008 extralibs_avutil="$avutil_extralibs"
7009 extralibs_avcodec="$avcodec_extralibs"
7010 extralibs_avformat="$avformat_extralibs"
7011 extralibs_avdevice="$avdevice_extralibs"
7012 extralibs_avfilter="$avfilter_extralibs"
7013 extralibs_avresample="$avresample_extralibs"
7014 extralibs_postproc="$postproc_extralibs"
7015 extralibs_swscale="$swscale_extralibs"
7016 extralibs_swresample="$swresample_extralibs"
7017 EOF
7018
7019 for lib in $LIBRARY_LIST; do
7020     lib_deps="$(eval echo \$${lib}_deps)"
7021     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7022 done
7023
7024 cp_if_changed $TMPH ffbuild/config.sh