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_nvdec_hwaccel_deps="nvdec"
2739 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2740 mpeg4_vaapi_hwaccel_deps="vaapi"
2741 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2742 mpeg4_vdpau_hwaccel_deps="vdpau"
2743 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2744 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2745 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2746 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2747 vc1_d3d11va_hwaccel_deps="d3d11va"
2748 vc1_d3d11va_hwaccel_select="vc1_decoder"
2749 vc1_d3d11va2_hwaccel_deps="d3d11va"
2750 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2751 vc1_dxva2_hwaccel_deps="dxva2"
2752 vc1_dxva2_hwaccel_select="vc1_decoder"
2753 vc1_mmal_hwaccel_deps="mmal"
2754 vc1_nvdec_hwaccel_deps="nvdec"
2755 vc1_nvdec_hwaccel_select="vc1_decoder"
2756 vc1_qsv_hwaccel_deps="libmfx"
2757 vc1_vaapi_hwaccel_deps="vaapi"
2758 vc1_vaapi_hwaccel_select="vc1_decoder"
2759 vc1_vdpau_hwaccel_deps="vdpau"
2760 vc1_vdpau_hwaccel_select="vc1_decoder"
2761 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2762 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2763 vp8_mediacodec_hwaccel_deps="mediacodec"
2764 vp8_qsv_hwaccel_deps="libmfx"
2765 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2766 vp9_d3d11va_hwaccel_select="vp9_decoder"
2767 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2768 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2769 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2770 vp9_dxva2_hwaccel_select="vp9_decoder"
2771 vp9_mediacodec_hwaccel_deps="mediacodec"
2772 vp9_nvdec_hwaccel_deps="nvdec"
2773 vp9_nvdec_hwaccel_select="vp9_decoder"
2774 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2775 vp9_vaapi_hwaccel_select="vp9_decoder"
2776 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2777 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2778 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2779 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2780 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2781 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2782
2783 # hardware-accelerated codecs
2784 omx_deps="libdl pthreads"
2785 omx_rpi_select="omx"
2786 qsv_deps="libmfx"
2787 qsvdec_select="qsv"
2788 qsvenc_select="qsv"
2789 qsvvpp_select="qsv"
2790 vaapi_encode_deps="vaapi"
2791 v4l2_m2m_deps_any="linux_videodev2_h"
2792
2793 hwupload_cuda_filter_deps="cuda"
2794 scale_npp_filter_deps="cuda libnpp"
2795 scale_cuda_filter_deps="cuda_sdk"
2796 thumbnail_cuda_filter_deps="cuda_sdk"
2797
2798 nvenc_deps="cuda"
2799 nvenc_deps_any="libdl LoadLibrary"
2800 nvenc_encoder_deps="nvenc"
2801
2802 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2803 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2804 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2805 h264_cuvid_decoder_deps="cuvid"
2806 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2807 h264_mediacodec_decoder_deps="mediacodec"
2808 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2809 h264_mmal_decoder_deps="mmal"
2810 h264_nvenc_encoder_deps="nvenc"
2811 h264_omx_encoder_deps="omx"
2812 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2813 h264_qsv_encoder_select="qsvenc"
2814 h264_rkmpp_decoder_deps="rkmpp"
2815 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2816 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2817 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2818 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2819 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2820 hevc_cuvid_decoder_deps="cuvid"
2821 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2822 hevc_mediacodec_decoder_deps="mediacodec"
2823 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2824 hevc_nvenc_encoder_deps="nvenc"
2825 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2826 hevc_qsv_encoder_select="hevcparse qsvenc"
2827 hevc_rkmpp_decoder_deps="rkmpp"
2828 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2829 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2830 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2831 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2832 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2833 mjpeg_cuvid_decoder_deps="cuvid"
2834 mjpeg_qsv_encoder_deps="libmfx"
2835 mjpeg_qsv_encoder_select="qsvenc"
2836 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2837 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2838 mpeg1_cuvid_decoder_deps="cuvid"
2839 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2840 mpeg2_crystalhd_decoder_select="crystalhd"
2841 mpeg2_cuvid_decoder_deps="cuvid"
2842 mpeg2_mmal_decoder_deps="mmal"
2843 mpeg2_mediacodec_decoder_deps="mediacodec"
2844 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2845 mpeg2_qsv_encoder_select="qsvenc"
2846 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2847 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2848 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2849 mpeg4_crystalhd_decoder_select="crystalhd"
2850 mpeg4_cuvid_decoder_deps="cuvid"
2851 mpeg4_mediacodec_decoder_deps="mediacodec"
2852 mpeg4_mmal_decoder_deps="mmal"
2853 mpeg4_omx_encoder_deps="omx"
2854 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2855 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2856 msmpeg4_crystalhd_decoder_select="crystalhd"
2857 nvenc_h264_encoder_select="h264_nvenc_encoder"
2858 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2859 vc1_crystalhd_decoder_select="crystalhd"
2860 vc1_cuvid_decoder_deps="cuvid"
2861 vc1_mmal_decoder_deps="mmal"
2862 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2863 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2864 vp8_cuvid_decoder_deps="cuvid"
2865 vp8_mediacodec_decoder_deps="mediacodec"
2866 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2867 vp8_rkmpp_decoder_deps="rkmpp"
2868 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2869 vp8_vaapi_encoder_select="vaapi_encode"
2870 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2871 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2872 vp9_cuvid_decoder_deps="cuvid"
2873 vp9_mediacodec_decoder_deps="mediacodec"
2874 vp9_rkmpp_decoder_deps="rkmpp"
2875 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2876 vp9_vaapi_encoder_select="vaapi_encode"
2877 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2878 wmv3_crystalhd_decoder_select="crystalhd"
2879
2880 # parsers
2881 aac_parser_select="adts_header"
2882 h264_parser_select="golomb h264dsp h264parse"
2883 hevc_parser_select="hevcparse"
2884 mpegaudio_parser_select="mpegaudioheader"
2885 mpegvideo_parser_select="mpegvideo"
2886 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2887 vc1_parser_select="vc1dsp"
2888
2889 # bitstream_filters
2890 aac_adtstoasc_bsf_select="adts_header"
2891 h264_metadata_bsf_select="cbs_h264"
2892 h264_redundant_pps_bsf_select="cbs_h264"
2893 hevc_metadata_bsf_select="cbs_h265"
2894 mjpeg2jpeg_bsf_select="jpegtables"
2895 mpeg2_metadata_bsf_select="cbs_mpeg2"
2896 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2897
2898 # external libraries
2899 aac_at_decoder_deps="audiotoolbox"
2900 ac3_at_decoder_deps="audiotoolbox"
2901 ac3_at_decoder_select="ac3_parser"
2902 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2903 alac_at_decoder_deps="audiotoolbox"
2904 amr_nb_at_decoder_deps="audiotoolbox"
2905 avisynth_deps_any="libdl LoadLibrary"
2906 avisynth_demuxer_deps="avisynth"
2907 avisynth_demuxer_select="riffdec"
2908 eac3_at_decoder_deps="audiotoolbox"
2909 eac3_at_decoder_select="ac3_parser"
2910 gsm_ms_at_decoder_deps="audiotoolbox"
2911 ilbc_at_decoder_deps="audiotoolbox"
2912 mp1_at_decoder_deps="audiotoolbox"
2913 mp2_at_decoder_deps="audiotoolbox"
2914 mp3_at_decoder_deps="audiotoolbox"
2915 mp1_at_decoder_select="mpegaudioheader"
2916 mp2_at_decoder_select="mpegaudioheader"
2917 mp3_at_decoder_select="mpegaudioheader"
2918 pcm_alaw_at_decoder_deps="audiotoolbox"
2919 pcm_mulaw_at_decoder_deps="audiotoolbox"
2920 qdmc_at_decoder_deps="audiotoolbox"
2921 qdm2_at_decoder_deps="audiotoolbox"
2922 aac_at_encoder_deps="audiotoolbox"
2923 aac_at_encoder_select="audio_frame_queue"
2924 alac_at_encoder_deps="audiotoolbox"
2925 alac_at_encoder_select="audio_frame_queue"
2926 ilbc_at_encoder_deps="audiotoolbox"
2927 ilbc_at_encoder_select="audio_frame_queue"
2928 pcm_alaw_at_encoder_deps="audiotoolbox"
2929 pcm_alaw_at_encoder_select="audio_frame_queue"
2930 pcm_mulaw_at_encoder_deps="audiotoolbox"
2931 pcm_mulaw_at_encoder_select="audio_frame_queue"
2932 chromaprint_muxer_deps="chromaprint"
2933 h264_videotoolbox_encoder_deps="pthreads"
2934 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2935 hevc_videotoolbox_encoder_deps="pthreads"
2936 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2937 libcelt_decoder_deps="libcelt"
2938 libfdk_aac_decoder_deps="libfdk_aac"
2939 libfdk_aac_encoder_deps="libfdk_aac"
2940 libfdk_aac_encoder_select="audio_frame_queue"
2941 libgme_demuxer_deps="libgme"
2942 libgsm_decoder_deps="libgsm"
2943 libgsm_encoder_deps="libgsm"
2944 libgsm_ms_decoder_deps="libgsm"
2945 libgsm_ms_encoder_deps="libgsm"
2946 libilbc_decoder_deps="libilbc"
2947 libilbc_encoder_deps="libilbc"
2948 libkvazaar_encoder_deps="libkvazaar"
2949 libmodplug_demuxer_deps="libmodplug"
2950 libmp3lame_encoder_deps="libmp3lame"
2951 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2952 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2953 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2954 libopencore_amrnb_encoder_select="audio_frame_queue"
2955 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2956 libopenh264_decoder_deps="libopenh264"
2957 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2958 libopenh264_encoder_deps="libopenh264"
2959 libopenjpeg_decoder_deps="libopenjpeg"
2960 libopenjpeg_encoder_deps="libopenjpeg"
2961 libopenmpt_demuxer_deps="libopenmpt"
2962 libopus_decoder_deps="libopus"
2963 libopus_encoder_deps="libopus"
2964 libopus_encoder_select="audio_frame_queue"
2965 librsvg_decoder_deps="librsvg"
2966 libshine_encoder_deps="libshine"
2967 libshine_encoder_select="audio_frame_queue"
2968 libspeex_decoder_deps="libspeex"
2969 libspeex_encoder_deps="libspeex"
2970 libspeex_encoder_select="audio_frame_queue"
2971 libtheora_encoder_deps="libtheora"
2972 libtwolame_encoder_deps="libtwolame"
2973 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2974 libvorbis_decoder_deps="libvorbis"
2975 libvorbis_encoder_deps="libvorbis libvorbisenc"
2976 libvorbis_encoder_select="audio_frame_queue"
2977 libvpx_vp8_decoder_deps="libvpx"
2978 libvpx_vp8_encoder_deps="libvpx"
2979 libvpx_vp9_decoder_deps="libvpx"
2980 libvpx_vp9_encoder_deps="libvpx"
2981 libwavpack_encoder_deps="libwavpack"
2982 libwavpack_encoder_select="audio_frame_queue"
2983 libwebp_encoder_deps="libwebp"
2984 libwebp_anim_encoder_deps="libwebp"
2985 libx262_encoder_deps="libx262"
2986 libx264_encoder_deps="libx264"
2987 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2988 libx264rgb_encoder_select="libx264_encoder"
2989 libx265_encoder_deps="libx265"
2990 libxavs_encoder_deps="libxavs"
2991 libxvid_encoder_deps="libxvid"
2992 libzvbi_teletext_decoder_deps="libzvbi"
2993 videotoolbox_suggest="coreservices"
2994 videotoolbox_deps="corefoundation coremedia corevideo"
2995 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2996
2997 # demuxers / muxers
2998 ac3_demuxer_select="ac3_parser"
2999 aiff_muxer_select="iso_media"
3000 asf_demuxer_select="riffdec"
3001 asf_o_demuxer_select="riffdec"
3002 asf_muxer_select="riffenc"
3003 asf_stream_muxer_select="asf_muxer"
3004 avi_demuxer_select="iso_media riffdec exif"
3005 avi_muxer_select="riffenc"
3006 caf_demuxer_select="iso_media riffdec"
3007 caf_muxer_select="iso_media"
3008 dash_muxer_select="mp4_muxer"
3009 dash_demuxer_deps="libxml2"
3010 dirac_demuxer_select="dirac_parser"
3011 dts_demuxer_select="dca_parser"
3012 dtshd_demuxer_select="dca_parser"
3013 dv_demuxer_select="dvprofile"
3014 dv_muxer_select="dvprofile"
3015 dxa_demuxer_select="riffdec"
3016 eac3_demuxer_select="ac3_parser"
3017 f4v_muxer_select="mov_muxer"
3018 fifo_muxer_deps="threads"
3019 flac_demuxer_select="flac_parser"
3020 hds_muxer_select="flv_muxer"
3021 hls_muxer_select="mpegts_muxer"
3022 hls_muxer_suggest="gcrypt openssl"
3023 image2_alias_pix_demuxer_select="image2_demuxer"
3024 image2_brender_pix_demuxer_select="image2_demuxer"
3025 ipod_muxer_select="mov_muxer"
3026 ismv_muxer_select="mov_muxer"
3027 matroska_audio_muxer_select="matroska_muxer"
3028 matroska_demuxer_select="iso_media riffdec"
3029 matroska_demuxer_suggest="bzlib lzo zlib"
3030 matroska_muxer_select="iso_media riffenc"
3031 mmf_muxer_select="riffenc"
3032 mov_demuxer_select="iso_media riffdec"
3033 mov_demuxer_suggest="zlib"
3034 mov_muxer_select="iso_media riffenc rtpenc_chain"
3035 mp3_demuxer_select="mpegaudio_parser"
3036 mp3_muxer_select="mpegaudioheader"
3037 mp4_muxer_select="mov_muxer"
3038 mpegts_demuxer_select="iso_media"
3039 mpegts_muxer_select="adts_muxer latm_muxer"
3040 mpegtsraw_demuxer_select="mpegts_demuxer"
3041 mxf_d10_muxer_select="mxf_muxer"
3042 mxf_opatom_muxer_select="mxf_muxer"
3043 nut_muxer_select="riffenc"
3044 nuv_demuxer_select="riffdec"
3045 oga_muxer_select="ogg_muxer"
3046 ogg_demuxer_select="dirac_parse"
3047 ogv_muxer_select="ogg_muxer"
3048 opus_muxer_select="ogg_muxer"
3049 psp_muxer_select="mov_muxer"
3050 rtp_demuxer_select="sdp_demuxer"
3051 rtp_muxer_select="golomb"
3052 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3053 rtsp_demuxer_select="http_protocol rtpdec"
3054 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3055 sap_demuxer_select="sdp_demuxer"
3056 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3057 sdp_demuxer_select="rtpdec"
3058 smoothstreaming_muxer_select="ismv_muxer"
3059 spdif_demuxer_select="adts_header"
3060 spdif_muxer_select="adts_header"
3061 spx_muxer_select="ogg_muxer"
3062 swf_demuxer_suggest="zlib"
3063 tak_demuxer_select="tak_parser"
3064 tg2_muxer_select="mov_muxer"
3065 tgp_muxer_select="mov_muxer"
3066 vobsub_demuxer_select="mpegps_demuxer"
3067 w64_demuxer_select="wav_demuxer"
3068 w64_muxer_select="wav_muxer"
3069 wav_demuxer_select="riffdec"
3070 wav_muxer_select="riffenc"
3071 webm_muxer_select="iso_media riffenc"
3072 webm_dash_manifest_demuxer_select="matroska_demuxer"
3073 wtv_demuxer_select="mpegts_demuxer riffdec"
3074 wtv_muxer_select="mpegts_muxer riffenc"
3075 xmv_demuxer_select="riffdec"
3076 xwma_demuxer_select="riffdec"
3077
3078 # indevs / outdevs
3079 alsa_indev_deps="alsa"
3080 alsa_outdev_deps="alsa"
3081 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3082 avfoundation_indev_suggest="coregraphics applicationservices"
3083 avfoundation_indev_extralibs="-framework Foundation"
3084 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3085 caca_outdev_deps="libcaca"
3086 decklink_deps_any="libdl LoadLibrary"
3087 decklink_indev_deps="decklink threads"
3088 decklink_indev_extralibs="-lstdc++"
3089 decklink_outdev_deps="decklink threads"
3090 decklink_outdev_extralibs="-lstdc++"
3091 libndi_newtek_indev_deps="libndi_newtek"
3092 libndi_newtek_indev_extralibs="-lndi"
3093 libndi_newtek_outdev_deps="libndi_newtek"
3094 libndi_newtek_outdev_extralibs="-lndi"
3095 dshow_indev_deps="IBaseFilter"
3096 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3097 fbdev_indev_deps="linux_fb_h"
3098 fbdev_outdev_deps="linux_fb_h"
3099 gdigrab_indev_deps="CreateDIBSection"
3100 gdigrab_indev_extralibs="-lgdi32"
3101 gdigrab_indev_select="bmp_decoder"
3102 iec61883_indev_deps="libiec61883"
3103 jack_indev_deps="libjack"
3104 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3105 kmsgrab_indev_deps="libdrm"
3106 lavfi_indev_deps="avfilter"
3107 libcdio_indev_deps="libcdio"
3108 libdc1394_indev_deps="libdc1394"
3109 openal_indev_deps="openal"
3110 opengl_outdev_deps="opengl"
3111 oss_indev_deps_any="sys_soundcard_h"
3112 oss_outdev_deps_any="sys_soundcard_h"
3113 pulse_indev_deps="libpulse"
3114 pulse_outdev_deps="libpulse"
3115 sdl2_outdev_deps="sdl2"
3116 sndio_indev_deps="sndio"
3117 sndio_outdev_deps="sndio"
3118 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3119 v4l2_indev_suggest="libv4l2"
3120 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3121 v4l2_outdev_suggest="libv4l2"
3122 vfwcap_indev_deps="vfw32 vfwcap_defines"
3123 xcbgrab_indev_deps="libxcb"
3124 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3125 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3126 xv_outdev_extralibs="-lXv -lX11 -lXext"
3127
3128 # protocols
3129 async_protocol_deps="threads"
3130 bluray_protocol_deps="libbluray"
3131 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3132 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3133 ffrtmpcrypt_protocol_select="tcp_protocol"
3134 ffrtmphttp_protocol_conflict="librtmp_protocol"
3135 ffrtmphttp_protocol_select="http_protocol"
3136 ftp_protocol_select="tcp_protocol"
3137 gopher_protocol_select="network"
3138 http_protocol_select="tcp_protocol"
3139 http_protocol_suggest="zlib"
3140 httpproxy_protocol_select="tcp_protocol"
3141 httpproxy_protocol_suggest="zlib"
3142 https_protocol_select="tls_protocol"
3143 https_protocol_suggest="zlib"
3144 icecast_protocol_select="http_protocol"
3145 librtmp_protocol_deps="librtmp"
3146 librtmpe_protocol_deps="librtmp"
3147 librtmps_protocol_deps="librtmp"
3148 librtmpt_protocol_deps="librtmp"
3149 librtmpte_protocol_deps="librtmp"
3150 libsmbclient_protocol_deps="libsmbclient gplv3"
3151 libssh_protocol_deps="libssh"
3152 mmsh_protocol_select="http_protocol"
3153 mmst_protocol_select="network"
3154 rtmp_protocol_conflict="librtmp_protocol"
3155 rtmp_protocol_select="tcp_protocol"
3156 rtmp_protocol_suggest="zlib"
3157 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3158 rtmpe_protocol_suggest="zlib"
3159 rtmps_protocol_conflict="librtmp_protocol"
3160 rtmps_protocol_select="tls_protocol"
3161 rtmps_protocol_suggest="zlib"
3162 rtmpt_protocol_select="ffrtmphttp_protocol"
3163 rtmpt_protocol_suggest="zlib"
3164 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3165 rtmpte_protocol_suggest="zlib"
3166 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3167 rtmpts_protocol_suggest="zlib"
3168 rtp_protocol_select="udp_protocol"
3169 schannel_conflict="openssl gnutls"
3170 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3171 sctp_protocol_select="network"
3172 securetransport_conflict="openssl gnutls"
3173 srtp_protocol_select="rtp_protocol srtp"
3174 tcp_protocol_select="network"
3175 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3176 tls_protocol_select="tcp_protocol"
3177 udp_protocol_select="network"
3178 udplite_protocol_select="network"
3179 unix_protocol_deps="sys_un_h"
3180 unix_protocol_select="network"
3181
3182 # filters
3183 afftfilt_filter_deps="avcodec"
3184 afftfilt_filter_select="fft"
3185 afir_filter_deps="avcodec"
3186 afir_filter_select="fft"
3187 amovie_filter_deps="avcodec avformat"
3188 aresample_filter_deps="swresample"
3189 ass_filter_deps="libass"
3190 atempo_filter_deps="avcodec"
3191 atempo_filter_select="rdft"
3192 azmq_filter_deps="libzmq"
3193 blackframe_filter_deps="gpl"
3194 boxblur_filter_deps="gpl"
3195 bs2b_filter_deps="libbs2b"
3196 colormatrix_filter_deps="gpl"
3197 coreimage_filter_deps="coreimage appkit"
3198 coreimage_filter_extralibs="-framework OpenGL"
3199 coreimagesrc_filter_deps="coreimage appkit"
3200 coreimagesrc_filter_extralibs="-framework OpenGL"
3201 cover_rect_filter_deps="avcodec avformat gpl"
3202 cropdetect_filter_deps="gpl"
3203 deinterlace_qsv_filter_deps="libmfx"
3204 deinterlace_vaapi_filter_deps="vaapi"
3205 delogo_filter_deps="gpl"
3206 deshake_filter_select="pixelutils"
3207 deshake_filter_suggest="opencl"
3208 drawtext_filter_deps="libfreetype"
3209 drawtext_filter_suggest="libfontconfig libfribidi"
3210 elbg_filter_deps="avcodec"
3211 eq_filter_deps="gpl"
3212 fftfilt_filter_deps="avcodec"
3213 fftfilt_filter_select="rdft"
3214 find_rect_filter_deps="avcodec avformat gpl"
3215 firequalizer_filter_deps="avcodec"
3216 firequalizer_filter_select="rdft"
3217 flite_filter_deps="libflite"
3218 framerate_filter_select="pixelutils"
3219 frei0r_filter_deps="frei0r libdl"
3220 frei0r_src_filter_deps="frei0r libdl"
3221 fspp_filter_deps="gpl"
3222 geq_filter_deps="gpl"
3223 histeq_filter_deps="gpl"
3224 hqdn3d_filter_deps="gpl"
3225 interlace_filter_deps="gpl"
3226 kerndeint_filter_deps="gpl"
3227 ladspa_filter_deps="ladspa libdl"
3228 mcdeint_filter_deps="avcodec gpl"
3229 movie_filter_deps="avcodec avformat"
3230 mpdecimate_filter_deps="gpl"
3231 mpdecimate_filter_select="pixelutils"
3232 mptestsrc_filter_deps="gpl"
3233 negate_filter_deps="lut_filter"
3234 nnedi_filter_deps="gpl"
3235 ocr_filter_deps="libtesseract"
3236 ocv_filter_deps="libopencv"
3237 overlay_qsv_filter_deps="libmfx"
3238 overlay_qsv_filter_select="qsvvpp"
3239 owdenoise_filter_deps="gpl"
3240 pan_filter_deps="swresample"
3241 perspective_filter_deps="gpl"
3242 phase_filter_deps="gpl"
3243 pp7_filter_deps="gpl"
3244 pp_filter_deps="gpl postproc"
3245 pullup_filter_deps="gpl"
3246 removelogo_filter_deps="avcodec avformat swscale"
3247 repeatfields_filter_deps="gpl"
3248 resample_filter_deps="avresample"
3249 rubberband_filter_deps="librubberband"
3250 sab_filter_deps="gpl swscale"
3251 scale2ref_filter_deps="swscale"
3252 scale_filter_deps="swscale"
3253 scale_qsv_filter_deps="libmfx"
3254 select_filter_select="pixelutils"
3255 showcqt_filter_deps="avcodec avformat swscale"
3256 showcqt_filter_suggest="libfontconfig libfreetype"
3257 showcqt_filter_select="fft"
3258 showfreqs_filter_deps="avcodec"
3259 showfreqs_filter_select="fft"
3260 showspectrum_filter_deps="avcodec"
3261 showspectrum_filter_select="fft"
3262 showspectrumpic_filter_deps="avcodec"
3263 showspectrumpic_filter_select="fft"
3264 signature_filter_deps="gpl avcodec avformat"
3265 smartblur_filter_deps="gpl swscale"
3266 sofalizer_filter_deps="libmysofa avcodec"
3267 sofalizer_filter_select="fft"
3268 spectrumsynth_filter_deps="avcodec"
3269 spectrumsynth_filter_select="fft"
3270 spp_filter_deps="gpl avcodec"
3271 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3272 stereo3d_filter_deps="gpl"
3273 subtitles_filter_deps="avformat avcodec libass"
3274 super2xsai_filter_deps="gpl"
3275 pixfmts_super2xsai_test_deps="super2xsai_filter"
3276 tinterlace_filter_deps="gpl"
3277 tinterlace_merge_test_deps="tinterlace_filter"
3278 tinterlace_pad_test_deps="tinterlace_filter"
3279 tonemap_filter_deps="const_nan"
3280 uspp_filter_deps="gpl avcodec"
3281 unsharp_filter_suggest="opencl"
3282 vaguedenoiser_filter_deps="gpl"
3283 vidstabdetect_filter_deps="libvidstab"
3284 vidstabtransform_filter_deps="libvidstab"
3285 libvmaf_filter_deps="libvmaf"
3286 zmq_filter_deps="libzmq"
3287 zoompan_filter_deps="swscale"
3288 zscale_filter_deps="libzimg const_nan"
3289 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3290 vpp_qsv_filter_deps="libmfx"
3291 vpp_qsv_filter_select="qsvvpp"
3292
3293 # examples
3294 avio_dir_cmd_deps="avformat avutil"
3295 avio_reading_deps="avformat avcodec avutil"
3296 decode_audio_example_deps="avcodec avutil"
3297 decode_video_example_deps="avcodec avutil"
3298 demuxing_decoding_example_deps="avcodec avformat avutil"
3299 encode_audio_example_deps="avcodec avutil"
3300 encode_video_example_deps="avcodec avutil"
3301 extract_mvs_example_deps="avcodec avformat avutil"
3302 filter_audio_example_deps="avfilter avutil"
3303 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3304 filtering_video_example_deps="avfilter avcodec avformat avutil"
3305 http_multiclient_example_deps="avformat avutil fork"
3306 hw_decode_example_deps="avcodec avformat avutil"
3307 metadata_example_deps="avformat avutil"
3308 muxing_example_deps="avcodec avformat avutil swscale"
3309 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3310 remuxing_example_deps="avcodec avformat avutil"
3311 resampling_audio_example_deps="avutil swresample"
3312 scaling_video_example_deps="avutil swscale"
3313 transcode_aac_example_deps="avcodec avformat swresample"
3314 transcoding_example_deps="avfilter avcodec avformat avutil"
3315
3316 # EXTRALIBS_LIST
3317 cpu_init_extralibs="pthreads_extralibs"
3318 cws2fws_extralibs="zlib_extralibs"
3319
3320 # libraries, in linking order
3321 avcodec_deps="avutil"
3322 avcodec_suggest="libm"
3323 avcodec_select="null_bsf"
3324 avdevice_deps="avformat avcodec avutil"
3325 avdevice_suggest="libm"
3326 avfilter_deps="avutil"
3327 avfilter_suggest="libm"
3328 avformat_deps="avcodec avutil"
3329 avformat_suggest="libm network zlib"
3330 avresample_deps="avutil"
3331 avresample_suggest="libm"
3332 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3333 postproc_deps="avutil gpl"
3334 postproc_suggest="libm"
3335 swresample_deps="avutil"
3336 swresample_suggest="libm libsoxr"
3337 swscale_deps="avutil"
3338 swscale_suggest="libm"
3339
3340 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3341 avfilter_extralibs="pthreads_extralibs"
3342 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3343
3344 # programs
3345 ffmpeg_deps="avcodec avfilter avformat swresample"
3346 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3347                null_filter
3348                trim_filter"
3349 ffmpeg_suggest="ole32 psapi shell32"
3350 ffplay_deps="avcodec avformat swscale swresample sdl2"
3351 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3352 ffplay_suggest="shell32"
3353 ffprobe_deps="avcodec avformat"
3354 ffprobe_suggest="shell32"
3355 ffserver_deps="avformat fork sarestart"
3356 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3357
3358 # documentation
3359 podpages_deps="perl"
3360 manpages_deps="perl pod2man"
3361 htmlpages_deps="perl"
3362 htmlpages_deps_any="makeinfo_html texi2html"
3363 txtpages_deps="perl makeinfo"
3364 doc_deps_any="manpages htmlpages podpages txtpages"
3365
3366 # default parameters
3367
3368 logfile="ffbuild/config.log"
3369
3370 # installation paths
3371 prefix_default="/usr/local"
3372 bindir_default='${prefix}/bin'
3373 datadir_default='${prefix}/share/ffmpeg'
3374 docdir_default='${prefix}/share/doc/ffmpeg'
3375 incdir_default='${prefix}/include'
3376 libdir_default='${prefix}/lib'
3377 mandir_default='${prefix}/share/man'
3378
3379 # toolchain
3380 ar_default="ar"
3381 cc_default="gcc"
3382 cxx_default="g++"
3383 host_cc_default="gcc"
3384 doxygen_default="doxygen"
3385 install="install"
3386 ln_s_default="ln -s -f"
3387 nm_default="nm -g"
3388 pkg_config_default=pkg-config
3389 ranlib_default="ranlib"
3390 strip_default="strip"
3391 version_script='--version-script'
3392 objformat="elf32"
3393 x86asmexe_default="nasm"
3394 windres_default="windres"
3395 nvcc_default="nvcc"
3396 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3397 striptype="direct"
3398
3399 # OS
3400 target_os_default=$(tolower $(uname -s))
3401 host_os=$target_os_default
3402
3403 # machine
3404 if test "$target_os_default" = aix; then
3405     arch_default=$(uname -p)
3406     strip_default="strip -X32_64"
3407 else
3408     arch_default=$(uname -m)
3409 fi
3410 cpu="generic"
3411 intrinsics="none"
3412
3413 # configurable options
3414 enable $PROGRAM_LIST
3415 enable $DOCUMENT_LIST
3416 enable $EXAMPLE_LIST
3417 enable $(filter_out avresample $LIBRARY_LIST)
3418 enable stripping
3419
3420 enable asm
3421 enable debug
3422 enable doc
3423 enable faan faandct faanidct
3424 enable optimizations
3425 enable runtime_cpudetect
3426 enable safe_bitstream_reader
3427 enable static
3428 enable swscale_alpha
3429 enable valgrind_backtrace
3430
3431 sws_max_filter_size_default=256
3432 set_default sws_max_filter_size
3433
3434 # internal components are enabled by default
3435 enable $EXTRALIBS_LIST
3436
3437 # Avoid external, non-system, libraries getting enabled by dependency resolution
3438 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3439
3440 # build settings
3441 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3442 LIBPREF="lib"
3443 LIBSUF=".a"
3444 FULLNAME='$(NAME)$(BUILDSUF)'
3445 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3446 SLIBPREF="lib"
3447 SLIBSUF=".so"
3448 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3449 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3450 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3451 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3452 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3453 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3454 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3455
3456 asflags_filter=echo
3457 cflags_filter=echo
3458 ldflags_filter=echo
3459
3460 AS_C='-c'
3461 AS_O='-o $@'
3462 CC_C='-c'
3463 CC_E='-E -o $@'
3464 CC_O='-o $@'
3465 CXX_C='-c'
3466 CXX_O='-o $@'
3467 OBJCC_C='-c'
3468 OBJCC_E='-E -o $@'
3469 OBJCC_O='-o $@'
3470 X86ASM_O='-o $@'
3471 LD_O='-o $@'
3472 LD_LIB='-l%'
3473 LD_PATH='-L'
3474 HOSTCC_C='-c'
3475 HOSTCC_E='-E -o $@'
3476 HOSTCC_O='-o $@'
3477 HOSTLD_O='-o $@'
3478 NVCC_C='-c'
3479 NVCC_O='-o $@'
3480
3481 host_extralibs='-lm'
3482 host_cflags_filter=echo
3483 host_ldflags_filter=echo
3484
3485 target_path='$(CURDIR)'
3486
3487 # since the object filename is not given with the -MM flag, the compiler
3488 # is only able to print the basename, and we must add the path ourselves
3489 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3490 DEPFLAGS='-MM'
3491
3492 mkdir -p ffbuild
3493
3494 # find source path
3495 if test -f configure; then
3496     source_path=.
3497 else
3498     source_path=$(cd $(dirname "$0"); pwd)
3499     case "$source_path" in
3500         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3501     esac
3502     test -e "$source_path/config.h" &&
3503         die "Out of tree builds are impossible with config.h in source dir."
3504 fi
3505
3506 for v in "$@"; do
3507     r=${v#*=}
3508     l=${v%"$r"}
3509     r=$(sh_quote "$r")
3510     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3511 done
3512
3513 find_things(){
3514     thing=$1
3515     pattern=$2
3516     file=$source_path/$3
3517     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3518 }
3519
3520 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3521 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3522 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3523 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3524 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3525 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3526 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3527 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3528 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3529
3530 find_things_extern(){
3531     thing=$1
3532     pattern=$2
3533     file=$source_path/$3
3534     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3535 }
3536
3537 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3538 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3539
3540 AVCODEC_COMPONENTS_LIST="
3541     $BSF_LIST
3542     $DECODER_LIST
3543     $ENCODER_LIST
3544     $HWACCEL_LIST
3545     $PARSER_LIST
3546 "
3547
3548 AVDEVICE_COMPONENTS_LIST="
3549     $INDEV_LIST
3550     $OUTDEV_LIST
3551 "
3552
3553 AVFILTER_COMPONENTS_LIST="
3554     $FILTER_LIST
3555 "
3556
3557 AVFORMAT_COMPONENTS_LIST="
3558     $DEMUXER_LIST
3559     $MUXER_LIST
3560     $PROTOCOL_LIST
3561 "
3562
3563 ALL_COMPONENTS="
3564     $AVCODEC_COMPONENTS_LIST
3565     $AVDEVICE_COMPONENTS_LIST
3566     $AVFILTER_COMPONENTS_LIST
3567     $AVFORMAT_COMPONENTS_LIST
3568 "
3569
3570 for n in $COMPONENT_LIST; do
3571     v=$(toupper ${n%s})_LIST
3572     eval enable \$$v
3573     eval ${n}_if_any="\$$v"
3574 done
3575
3576 enable $ARCH_EXT_LIST
3577
3578 die_unknown(){
3579     echo "Unknown option \"$1\"."
3580     echo "See $0 --help for available options."
3581     exit 1
3582 }
3583
3584 print_in_columns() {
3585     cols=$(expr $ncols / 24)
3586     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3587 }
3588
3589 show_list() {
3590     suffix=_$1
3591     shift
3592     echo $* | sed s/$suffix//g | print_in_columns
3593     exit 0
3594 }
3595
3596 rand_list(){
3597     IFS=', '
3598     set -- $*
3599     unset IFS
3600     for thing; do
3601         comp=${thing%:*}
3602         prob=${thing#$comp}
3603         prob=${prob#:}
3604         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3605         echo "prob ${prob:-0.5}"
3606         printf '%s\n' $comp
3607     done
3608 }
3609
3610 do_random(){
3611     action=$1
3612     shift
3613     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3614     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3615 }
3616
3617 for opt do
3618     optval="${opt#*=}"
3619     case "$opt" in
3620         --extra-ldflags=*)
3621             add_ldflags $optval
3622         ;;
3623         --extra-ldexeflags=*)
3624             add_ldexeflags $optval
3625         ;;
3626         --extra-ldsoflags=*)
3627             add_ldsoflags $optval
3628         ;;
3629         --extra-ldlibflags=*)
3630             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3631                  "removed in the future. Use --extra-ldsoflags instead."
3632             add_ldsoflags $optval
3633         ;;
3634         --extra-libs=*)
3635             add_extralibs $optval
3636         ;;
3637         --disable-devices)
3638             disable $INDEV_LIST $OUTDEV_LIST
3639         ;;
3640         --enable-debug=*)
3641             debuglevel="$optval"
3642         ;;
3643         --disable-programs)
3644             disable $PROGRAM_LIST
3645         ;;
3646         --disable-everything)
3647             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3648         ;;
3649         --disable-all)
3650             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3651             disable $LIBRARY_LIST $PROGRAM_LIST doc
3652             enable avutil
3653         ;;
3654         --enable-random|--disable-random)
3655             action=${opt%%-random}
3656             do_random ${action#--} $COMPONENT_LIST
3657         ;;
3658         --enable-random=*|--disable-random=*)
3659             action=${opt%%-random=*}
3660             do_random ${action#--} $optval
3661         ;;
3662         --enable-sdl)
3663             enable sdl2
3664         ;;
3665         --enable-*=*|--disable-*=*)
3666             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3667             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3668             eval list=\$$(toupper $thing)_LIST
3669             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3670             list=$(filter "$name" $list)
3671             [ "$list" = "" ] && warn "Option $opt did not match anything"
3672             $action $list
3673         ;;
3674         --enable-yasm|--disable-yasm)
3675             warn "The ${opt} option is only provided for compatibility and will be\n"\
3676                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3677             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3678         ;;
3679         --yasmexe=*)
3680             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3681                  "removed in the future. Use --x86asmexe instead."
3682             x86asmexe="$optval"
3683         ;;
3684         --enable-?*|--disable-?*)
3685             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3686             if is_in $option $COMPONENT_LIST; then
3687                 test $action = disable && action=unset
3688                 eval $action \$$(toupper ${option%s})_LIST
3689             elif is_in $option $CMDLINE_SELECT; then
3690                 $action $option
3691             else
3692                 die_unknown $opt
3693             fi
3694         ;;
3695         --list-*)
3696             NAME="${opt#--list-}"
3697             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3698             NAME=${NAME%s}
3699             eval show_list $NAME \$$(toupper $NAME)_LIST
3700         ;;
3701         --help|-h) show_help
3702         ;;
3703         --quiet|-q) quiet=yes
3704         ;;
3705         --fatal-warnings) enable fatal_warnings
3706         ;;
3707         --libfuzzer=*)
3708             libfuzzer_path="$optval"
3709         ;;
3710         *)
3711             optname="${opt%%=*}"
3712             optname="${optname#--}"
3713             optname=$(echo "$optname" | sed 's/-/_/g')
3714             if is_in $optname $CMDLINE_SET; then
3715                 eval $optname='$optval'
3716             elif is_in $optname $CMDLINE_APPEND; then
3717                 append $optname "$optval"
3718             else
3719                 die_unknown $opt
3720             fi
3721         ;;
3722     esac
3723 done
3724
3725 for e in $env; do
3726     eval "export $e"
3727 done
3728
3729 if disabled autodetect; then
3730
3731     # Unless iconv is explicitely disabled by the user, we still want to probe
3732     # for the iconv from the libc.
3733     disabled iconv || enable libc_iconv
3734
3735     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3736     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3737 fi
3738 # Mark specifically enabled, but normally autodetected libraries as requested.
3739 for lib in $AUTODETECT_LIBS; do
3740     enabled $lib && request $lib
3741 done
3742 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3743 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3744 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3745
3746 disabled logging && logfile=/dev/null
3747
3748 # command line configuration sanity checks
3749
3750 # we need to build at least one lib type
3751 if ! enabled_any static shared; then
3752     cat <<EOF
3753 At least one library type must be built.
3754 Specify --enable-static to build the static libraries or --enable-shared to
3755 build the shared libraries as well. To only build the shared libraries specify
3756 --disable-static in addition to --enable-shared.
3757 EOF
3758     exit 1
3759 fi
3760
3761 die_license_disabled() {
3762     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3763 }
3764
3765 die_license_disabled_gpl() {
3766     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3767 }
3768
3769 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3770 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3771
3772 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3773 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3774
3775 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3776
3777 enabled_all gnutls openssl &&
3778     die "GnuTLS and OpenSSL must not be enabled at the same time."
3779
3780 # Disable all the library-specific components if the library itself
3781 # is disabled, see AVCODEC_LIST and following _LIST variables.
3782
3783 disable_components(){
3784     disabled ${1} && disable $(
3785         eval components="\$$(toupper ${1})_COMPONENTS"
3786         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3787     )
3788 }
3789
3790 map 'disable_components $v' $LIBRARY_LIST
3791
3792 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3793 set >> $logfile
3794
3795 test -n "$valgrind" && toolchain="valgrind-memcheck"
3796
3797 enabled ossfuzz && {
3798     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3799     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3800 }
3801
3802 case "$toolchain" in
3803     *-asan)
3804         cc_default="${toolchain%-asan}"
3805         add_cflags  -fsanitize=address
3806         add_ldflags -fsanitize=address
3807     ;;
3808     *-msan)
3809         cc_default="${toolchain%-msan}"
3810         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3811         add_ldflags -fsanitize=memory
3812     ;;
3813     *-tsan)
3814         cc_default="${toolchain%-tsan}"
3815         add_cflags  -fsanitize=thread -fPIE
3816         add_ldflags -fsanitize=thread -pie
3817         case "$toolchain" in
3818             gcc-tsan)
3819                 add_cflags  -fPIC
3820                 add_ldflags -fPIC
3821                 ;;
3822         esac
3823     ;;
3824     *-usan)
3825         cc_default="${toolchain%-usan}"
3826         add_cflags  -fsanitize=undefined
3827         add_ldflags -fsanitize=undefined
3828     ;;
3829     valgrind-*)
3830         target_exec_default="valgrind"
3831         case "$toolchain" in
3832             valgrind-massif)
3833                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3834                 ;;
3835             valgrind-memcheck)
3836                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3837                 ;;
3838         esac
3839     ;;
3840     msvc)
3841         # Check whether the current MSVC version needs the C99 converter.
3842         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3843         # support enough of C99 to build ffmpeg. Default to the new
3844         # behaviour if the regexp was unable to match anything, since this
3845         # successfully parses the version number of existing supported
3846         # versions that require the converter (MSVC 2010 and 2012).
3847         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3848         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3849             cc_default="cl"
3850             cxx_default="cl"
3851         else
3852             cc_default="c99wrap cl"
3853             cxx_default="c99wrap cl"
3854         fi
3855         ld_default="$source_path/compat/windows/mslink"
3856         nm_default="dumpbin -symbols"
3857         ar_default="lib"
3858         case "$arch" in
3859         aarch64|arm64)
3860             as_default="armasm64"
3861             ;;
3862         arm*)
3863             as_default="armasm"
3864             ;;
3865         esac
3866         target_os_default="win32"
3867         # Use a relative path for TMPDIR. This makes sure all the
3868         # ffconf temp files are written with a relative path, avoiding
3869         # issues with msys/win32 path conversion for MSVC parameters
3870         # such as -Fo<file> or -out:<file>.
3871         TMPDIR=.
3872     ;;
3873     icl)
3874         cc_default="icl"
3875         ld_default="xilink"
3876         nm_default="dumpbin -symbols"
3877         ar_default="xilib"
3878         target_os_default="win32"
3879         TMPDIR=.
3880     ;;
3881     gcov)
3882         add_cflags  -fprofile-arcs -ftest-coverage
3883         add_ldflags -fprofile-arcs -ftest-coverage
3884     ;;
3885     llvm-cov)
3886         add_cflags -fprofile-arcs -ftest-coverage
3887         add_ldflags --coverage
3888     ;;
3889     hardened)
3890         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3891         add_cflags   -fno-strict-overflow -fstack-protector-all
3892         add_ldflags  -Wl,-z,relro -Wl,-z,now
3893         add_cflags   -fPIE
3894         add_ldexeflags -fPIE -pie
3895     ;;
3896     ?*)
3897         die "Unknown toolchain $toolchain"
3898     ;;
3899 esac
3900
3901 if test -n "$cross_prefix"; then
3902     test -n "$arch" && test -n "$target_os" ||
3903         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3904     enable cross_compile
3905 fi
3906
3907 ar_default="${cross_prefix}${ar_default}"
3908 cc_default="${cross_prefix}${cc_default}"
3909 cxx_default="${cross_prefix}${cxx_default}"
3910 nm_default="${cross_prefix}${nm_default}"
3911 pkg_config_default="${cross_prefix}${pkg_config_default}"
3912 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3913     ranlib_default="${cross_prefix}${ranlib_default} -D"
3914 else
3915     ranlib_default="${cross_prefix}${ranlib_default}"
3916 fi
3917 strip_default="${cross_prefix}${strip_default}"
3918 windres_default="${cross_prefix}${windres_default}"
3919
3920 sysinclude_default="${sysroot}/usr/include"
3921
3922 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3923     target_exec target_os x86asmexe nvcc
3924 enabled cross_compile || host_cc_default=$cc
3925 set_default host_cc
3926
3927 pkg_config_fail_message=""
3928 if ! $pkg_config --version >/dev/null 2>&1; then
3929     warn "$pkg_config not found, library detection may fail."
3930     pkg_config=false
3931 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3932     pkg_config_fail_message="
3933 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3934 fi
3935
3936 if test $doxygen != $doxygen_default && \
3937   ! $doxygen --version >/dev/null 2>&1; then
3938     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3939 fi
3940
3941 exesuf() {
3942     case $1 in
3943         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3944     esac
3945 }
3946
3947 EXESUF=$(exesuf $target_os)
3948 HOSTEXESUF=$(exesuf $host_os)
3949
3950 # set temporary file name
3951 : ${TMPDIR:=$TEMPDIR}
3952 : ${TMPDIR:=$TMP}
3953 : ${TMPDIR:=/tmp}
3954
3955 if [ -n "$tempprefix" ] ; then
3956     mktemp(){
3957         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3958         echo "$tmpname"
3959         mkdir "$tmpname"
3960     }
3961 elif ! check_cmd mktemp -u XXXXXX; then
3962     # simple replacement for missing mktemp
3963     # NOT SAFE FOR GENERAL USE
3964     mktemp(){
3965         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3966         echo "$tmpname"
3967         mkdir "$tmpname"
3968     }
3969 fi
3970
3971 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3972     die "Unable to create temporary directory in $TMPDIR."
3973
3974 tmpfile(){
3975     tmp="${FFTMPDIR}/test"$2
3976     (set -C; exec > $tmp) 2> /dev/null ||
3977         die "Unable to create temporary file in $FFTMPDIR."
3978     eval $1=$tmp
3979 }
3980
3981 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3982 trap 'exit 2' INT
3983
3984 tmpfile TMPASM .asm
3985 tmpfile TMPC   .c
3986 tmpfile TMPCPP .cpp
3987 tmpfile TMPE   $EXESUF
3988 tmpfile TMPH   .h
3989 tmpfile TMPM   .m
3990 tmpfile TMPO   .o
3991 tmpfile TMPS   .S
3992 tmpfile TMPSH  .sh
3993 tmpfile TMPV   .ver
3994
3995 unset -f mktemp
3996
3997 chmod +x $TMPE
3998
3999 # make sure we can execute files in $TMPDIR
4000 cat > $TMPSH 2>> $logfile <<EOF
4001 #! /bin/sh
4002 EOF
4003 chmod +x $TMPSH >> $logfile 2>&1
4004 if ! $TMPSH >> $logfile 2>&1; then
4005     cat <<EOF
4006 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4007 variable to another directory and make sure that it is not mounted noexec.
4008 EOF
4009     die "Sanity test failed."
4010 fi
4011
4012 armasm_flags(){
4013     for flag; do
4014         case $flag in
4015             # Filter out MSVC cl.exe options from cflags that shouldn't
4016             # be passed to gas-preprocessor
4017             -M[TD]*)                                            ;;
4018             *)                  echo $flag                      ;;
4019         esac
4020    done
4021 }
4022
4023 cparser_flags(){
4024     for flag; do
4025         case $flag in
4026             -Wno-switch)             echo -Wno-switch-enum ;;
4027             -Wno-format-zero-length) ;;
4028             -Wdisabled-optimization) ;;
4029             -Wno-pointer-sign)       echo -Wno-other ;;
4030             *)                       echo $flag ;;
4031         esac
4032     done
4033 }
4034
4035 msvc_common_flags(){
4036     for flag; do
4037         case $flag in
4038             # In addition to specifying certain flags under the compiler
4039             # specific filters, they must be specified here as well or else the
4040             # generic catch all at the bottom will print the original flag.
4041             -Wall)                ;;
4042             -Wextra)              ;;
4043             -std=c99)             ;;
4044             # Common flags
4045             -fomit-frame-pointer) ;;
4046             -g)                   echo -Z7 ;;
4047             -fno-math-errno)      ;;
4048             -fno-common)          ;;
4049             -fno-signed-zeros)    ;;
4050             -fPIC)                ;;
4051             -mthumb)              ;;
4052             -march=*)             ;;
4053             -lz)                  echo zlib.lib ;;
4054             -lx264)               echo libx264.lib ;;
4055             -lstdc++)             ;;
4056             -l*)                  echo ${flag#-l}.lib ;;
4057             -LARGEADDRESSAWARE)   echo $flag ;;
4058             -L*)                  echo -libpath:${flag#-L} ;;
4059             *)                    echo $flag ;;
4060         esac
4061     done
4062 }
4063
4064 msvc_flags(){
4065     msvc_common_flags "$@"
4066     for flag; do
4067         case $flag in
4068             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4069                                        -wd4554 ;;
4070             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4071                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4072                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4073                                        -wd4307 \
4074                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4075         esac
4076     done
4077 }
4078
4079 icl_flags(){
4080     msvc_common_flags "$@"
4081     for flag; do
4082         case $flag in
4083             # Despite what Intel's documentation says -Wall, which is supported
4084             # on Windows, does enable remarks so disable them here.
4085             -Wall)                echo $flag -Qdiag-disable:remark ;;
4086             -std=c99)             echo -Qstd=c99 ;;
4087             -flto)                echo -ipo ;;
4088         esac
4089     done
4090 }
4091
4092 icc_flags(){
4093     for flag; do
4094         case $flag in
4095             -flto)                echo -ipo ;;
4096             *)                    echo $flag ;;
4097         esac
4098     done
4099 }
4100
4101 suncc_flags(){
4102     for flag; do
4103         case $flag in
4104             -march=*|-mcpu=*)
4105                 case "${flag#*=}" in
4106                     native)                   echo -xtarget=native       ;;
4107                     v9|niagara)               echo -xarch=sparc          ;;
4108                     ultrasparc)               echo -xarch=sparcvis       ;;
4109                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4110                     i586|pentium)             echo -xchip=pentium        ;;
4111                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4112                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4113                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4114                     pentium4*)          echo -xtarget=pentium4           ;;
4115                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4116                     *-sse3)             echo -xarch=sse3                 ;;
4117                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4118                     bonnell)                   echo -xarch=ssse3         ;;
4119                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4120                     westmere)                  echo -xtarget=westmere    ;;
4121                     silvermont)                echo -xarch=sse4_2        ;;
4122                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4123                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4124                                                echo -xarch=avx           ;;
4125                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4126                     btver1)                    echo -xarch=amdsse4a      ;;
4127                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4128                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4129                     k8|opteron|athlon64|athlon-fx)
4130                                                echo -xarch=sse2a         ;;
4131                     athlon*)                   echo -xarch=pentium_proa  ;;
4132                 esac
4133                 ;;
4134             -std=c99)             echo -xc99              ;;
4135             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4136             -fPIC)                echo -KPIC -xcode=pic32 ;;
4137             -W*,*)                echo $flag              ;;
4138             -f*-*|-W*|-mimpure-text)                      ;;
4139             -shared)              echo -G                 ;;
4140             *)                    echo $flag              ;;
4141         esac
4142     done
4143 }
4144
4145 probe_cc(){
4146     pfx=$1
4147     _cc=$2
4148     first=$3
4149
4150     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4151     unset _ld_o _ldflags _ld_lib _ld_path
4152     unset _depflags _DEPCMD _DEPFLAGS
4153     _flags_filter=echo
4154
4155     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4156         true # no-op to avoid reading stdin in following checks
4157     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4158         _type=llvm_gcc
4159         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4160         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4161         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4162         _cflags_speed='-O3'
4163         _cflags_size='-Os'
4164     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4165         _type=gcc
4166         gcc_version=$($_cc --version | head -n1)
4167         gcc_basever=$($_cc -dumpversion)
4168         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4169         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4170         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4171         case $gcc_basever in
4172             2) ;;
4173             2.*) ;;
4174             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4175         esac
4176         if [ "$first" = true ]; then
4177             case $gcc_basever in
4178                 4.2*)
4179                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4180             esac
4181         fi
4182         _cflags_speed='-O3'
4183         _cflags_size='-Os'
4184     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4185         _type=icc
4186         _ident=$($_cc --version | head -n1)
4187         _depflags='-MMD'
4188         _cflags_speed='-O3'
4189         _cflags_size='-Os'
4190         _cflags_noopt='-O1'
4191         _flags_filter=icc_flags
4192     elif $_cc -v 2>&1 | grep -q xlc; then
4193         _type=xlc
4194         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4195         _cflags_speed='-O5'
4196         _cflags_size='-O5 -qcompact'
4197     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4198         test -d "$sysroot" || die "No valid sysroot specified."
4199         _type=armcc
4200         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4201         armcc_conf="$PWD/armcc.conf"
4202         $_cc --arm_linux_configure                 \
4203              --arm_linux_config_file="$armcc_conf" \
4204              --configure_sysroot="$sysroot"        \
4205              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4206              die "Error creating armcc configuration file."
4207         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4208         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4209         as_default="${cross_prefix}gcc"
4210         _depflags='-MMD'
4211         _cflags_speed='-O3'
4212         _cflags_size='-Os'
4213     elif $_cc -v 2>&1 | grep -q clang; then
4214         _type=clang
4215         _ident=$($_cc --version 2>/dev/null | head -n1)
4216         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4217         _cflags_speed='-O3'
4218         _cflags_size='-Oz'
4219     elif $_cc -V 2>&1 | grep -q Sun; then
4220         _type=suncc
4221         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4222         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4223         _DEPFLAGS='-xM1 -xc99'
4224         _ldflags='-std=c99'
4225         _cflags_speed='-O5'
4226         _cflags_size='-O5 -xspace'
4227         _flags_filter=suncc_flags
4228     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4229         _type=pathscale
4230         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4231         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4232         _cflags_speed='-O2'
4233         _cflags_size='-Os'
4234         _flags_filter='filter_out -Wdisabled-optimization'
4235     elif $_cc -v 2>&1 | grep -q Open64; then
4236         _type=open64
4237         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4238         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4239         _cflags_speed='-O2'
4240         _cflags_size='-Os'
4241         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4242     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4243         _type=armasm
4244         _ident=$($_cc | head -n1)
4245         # 4509: "This form of conditional instruction is deprecated"
4246         _flags="-nologo -ignore 4509"
4247         _flags_filter=armasm_flags
4248     elif $_cc 2>&1 | grep -q Intel; then
4249         _type=icl
4250         _ident=$($_cc 2>&1 | head -n1)
4251         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4252         # Not only is O3 broken on 13.x+ but it is slower on all previous
4253         # versions (tested) as well.
4254         _cflags_speed="-O2"
4255         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4256         if $_cc 2>&1 | grep -q Linker; then
4257             _ld_o='-out:$@'
4258         else
4259             _ld_o='-Fe$@'
4260         fi
4261         _cc_o='-Fo$@'
4262         _cc_e='-P'
4263         _flags_filter=icl_flags
4264         _ld_lib='lib%.a'
4265         _ld_path='-libpath:'
4266         # -Qdiag-error to make icl error when seeing certain unknown arguments
4267         _flags='-nologo -Qdiag-error:4044,10157'
4268         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4269         # with MSVC which enables it by default.
4270         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4271         disable stripping
4272     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4273         # lld can emulate multiple different linkers; in ms link.exe mode,
4274         # the -? parameter gives the help output which contains an identifyable
4275         # string, while it gives an error in other modes.
4276         _type=lld-link
4277         # The link.exe mode doesn't have a switch for getting the version,
4278         # but we can force it back to gnu mode and get the version from there.
4279         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4280         _ld_o='-out:$@'
4281         _flags_filter=msvc_flags
4282         _ld_lib='lib%.a'
4283         _ld_path='-libpath:'
4284     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4285         _type=msvc
4286         _ident=$($_cc 2>&1 | head -n1)
4287         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4288         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4289         _cflags_speed="-O2"
4290         _cflags_size="-O1"
4291         _cflags_noopt="-O1"
4292         if $_cc -nologo- 2>&1 | grep -q Linker; then
4293             _ld_o='-out:$@'
4294         else
4295             _ld_o='-Fe$@'
4296         fi
4297         _cc_o='-Fo$@'
4298         _cc_e='-P -Fi$@'
4299         _flags_filter=msvc_flags
4300         _ld_lib='lib%.a'
4301         _ld_path='-libpath:'
4302         _flags='-nologo'
4303         disable stripping
4304     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4305         _type=cparser
4306         _ident=$($_cc --version | head -n1)
4307         _depflags='-MMD'
4308         _cflags_speed='-O4'
4309         _cflags_size='-O2'
4310         _flags_filter=cparser_flags
4311     fi
4312
4313     eval ${pfx}_type=\$_type
4314     eval ${pfx}_ident=\$_ident
4315 }
4316
4317 set_ccvars(){
4318     eval ${1}_C=\${_cc_c-\${${1}_C}}
4319     eval ${1}_E=\${_cc_e-\${${1}_E}}
4320     eval ${1}_O=\${_cc_o-\${${1}_O}}
4321
4322     if [ -n "$_depflags" ]; then
4323         eval ${1}_DEPFLAGS=\$_depflags
4324     else
4325         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4326         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4327         eval DEP${1}FLAGS=\$_flags
4328     fi
4329 }
4330
4331 probe_cc cc "$cc" "true"
4332 cflags_filter=$_flags_filter
4333 cflags_speed=$_cflags_speed
4334 cflags_size=$_cflags_size
4335 cflags_noopt=$_cflags_noopt
4336 add_cflags $_flags $_cflags
4337 cc_ldflags=$_ldflags
4338 set_ccvars CC
4339 set_ccvars CXX
4340
4341 probe_cc hostcc "$host_cc"
4342 host_cflags_filter=$_flags_filter
4343 host_cflags_speed=$_cflags_speed
4344 add_host_cflags  $_flags $_cflags
4345 set_ccvars HOSTCC
4346
4347 test -n "$cc_type" && enable $cc_type ||
4348     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4349
4350 : ${as_default:=$cc}
4351 : ${objcc_default:=$cc}
4352 : ${dep_cc_default:=$cc}
4353 : ${ld_default:=$cc}
4354 : ${host_ld_default:=$host_cc}
4355 set_default ar as objcc dep_cc ld ln_s host_ld windres
4356
4357 probe_cc as "$as"
4358 asflags_filter=$_flags_filter
4359 add_asflags $_flags $_cflags
4360 set_ccvars AS
4361
4362 probe_cc objcc "$objcc"
4363 objcflags_filter=$_flags_filter
4364 add_objcflags $_flags $_cflags
4365 set_ccvars OBJC
4366
4367 probe_cc ld "$ld"
4368 ldflags_filter=$_flags_filter
4369 add_ldflags $_flags $_ldflags
4370 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4371 LD_O=${_ld_o-$LD_O}
4372 LD_LIB=${_ld_lib-$LD_LIB}
4373 LD_PATH=${_ld_path-$LD_PATH}
4374
4375 probe_cc hostld "$host_ld"
4376 host_ldflags_filter=$_flags_filter
4377 add_host_ldflags $_flags $_ldflags
4378 HOSTLD_O=${_ld_o-$HOSTLD_O}
4379
4380 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4381     probe_cc depcc "$dep_cc"
4382     CCDEP=${_DEPCMD:-$DEPCMD}
4383     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4384     DEPCCFLAGS=$_flags
4385 fi
4386
4387 if $ar 2>&1 | grep -q Microsoft; then
4388     arflags="-nologo"
4389     ar_o='-out:$@'
4390 elif $ar 2>&1 | grep -q "\[D\] "; then
4391     arflags="rcD"
4392     ar_o='$@'
4393 else
4394     arflags="rc"
4395     ar_o='$@'
4396 fi
4397
4398 add_cflags $extra_cflags
4399 add_cxxflags $extra_cxxflags
4400 add_objcflags $extra_objcflags
4401 add_asflags $extra_cflags
4402
4403 if test -n "$sysroot"; then
4404     case "$cc_type" in
4405         gcc|llvm_gcc|clang)
4406             add_cppflags --sysroot="$sysroot"
4407             add_ldflags --sysroot="$sysroot"
4408         ;;
4409     esac
4410 fi
4411
4412 if test "$cpu" = host; then
4413     enabled cross_compile &&
4414         die "--cpu=host makes no sense when cross-compiling."
4415
4416     case "$cc_type" in
4417         gcc|llvm_gcc)
4418             check_native(){
4419                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4420                 sed -n "/cc1.*$1=/{
4421                             s/.*$1=\\([^ ]*\\).*/\\1/
4422                             p
4423                             q
4424                         }" $TMPE
4425             }
4426             cpu=$(check_native -march || check_native -mcpu)
4427         ;;
4428         clang)
4429             check_native(){
4430                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4431                 sed -n "/cc1.*-target-cpu /{
4432                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4433                             p
4434                             q
4435                         }" $TMPE
4436             }
4437             cpu=$(check_native -march)
4438         ;;
4439     esac
4440
4441     test "${cpu:-host}" = host &&
4442         die "--cpu=host not supported with compiler $cc"
4443 fi
4444
4445 # Deal with common $arch aliases
4446 case "$arch" in
4447     aarch64|arm64)
4448         arch="aarch64"
4449     ;;
4450     arm*|iPad*|iPhone*)
4451         arch="arm"
4452     ;;
4453     mips*|IP*)
4454         case "$arch" in
4455         *el)
4456             add_cppflags -EL
4457             add_ldflags -EL
4458         ;;
4459         *eb)
4460             add_cppflags -EB
4461             add_ldflags -EB
4462         ;;
4463         esac
4464         arch="mips"
4465     ;;
4466     parisc*|hppa*)
4467         arch="parisc"
4468     ;;
4469     "Power Macintosh"|ppc*|powerpc*)
4470         arch="ppc"
4471     ;;
4472     s390|s390x)
4473         arch="s390"
4474     ;;
4475     sh4|sh)
4476         arch="sh4"
4477     ;;
4478     sun4*|sparc*)
4479         arch="sparc"
4480     ;;
4481     tilegx|tile-gx)
4482         arch="tilegx"
4483     ;;
4484     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4485         arch="x86"
4486     ;;
4487 esac
4488
4489 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4490 enable $arch
4491
4492 # Add processor-specific flags
4493 if enabled aarch64; then
4494
4495     case $cpu in
4496         armv*)
4497             cpuflags="-march=$cpu"
4498         ;;
4499         *)
4500             cpuflags="-mcpu=$cpu"
4501         ;;
4502     esac
4503
4504 elif enabled alpha; then
4505
4506     cpuflags="-mcpu=$cpu"
4507
4508 elif enabled arm; then
4509
4510     check_arm_arch() {
4511         check_cpp_condition stddef.h \
4512             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4513             $cpuflags
4514     }
4515
4516     probe_arm_arch() {
4517         if   check_arm_arch 4;        then echo armv4
4518         elif check_arm_arch 4T;       then echo armv4t
4519         elif check_arm_arch 5;        then echo armv5
4520         elif check_arm_arch 5E;       then echo armv5e
4521         elif check_arm_arch 5T;       then echo armv5t
4522         elif check_arm_arch 5TE;      then echo armv5te
4523         elif check_arm_arch 5TEJ;     then echo armv5te
4524         elif check_arm_arch 6;        then echo armv6
4525         elif check_arm_arch 6J;       then echo armv6j
4526         elif check_arm_arch 6K;       then echo armv6k
4527         elif check_arm_arch 6Z;       then echo armv6z
4528         elif check_arm_arch 6ZK;      then echo armv6zk
4529         elif check_arm_arch 6T2;      then echo armv6t2
4530         elif check_arm_arch 7;        then echo armv7
4531         elif check_arm_arch 7A  7_A;  then echo armv7-a
4532         elif check_arm_arch 7S;       then echo armv7-a
4533         elif check_arm_arch 7R  7_R;  then echo armv7-r
4534         elif check_arm_arch 7M  7_M;  then echo armv7-m
4535         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4536         elif check_arm_arch 8A  8_A;  then echo armv8-a
4537         fi
4538     }
4539
4540     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4541
4542     case $cpu in
4543         armv*)
4544             cpuflags="-march=$cpu"
4545             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4546         ;;
4547         *)
4548             cpuflags="-mcpu=$cpu"
4549             case $cpu in
4550                 cortex-a*)                               subarch=armv7a  ;;
4551                 cortex-r*)                               subarch=armv7r  ;;
4552                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4553                 arm11*)                                  subarch=armv6   ;;
4554                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4555                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4556                 *)                             subarch=$(probe_arm_arch) ;;
4557             esac
4558         ;;
4559     esac
4560
4561     case "$subarch" in
4562         armv5t*)    enable fast_clz                ;;
4563         armv[6-8]*)
4564             enable fast_clz
4565             disabled fast_unaligned || enable fast_unaligned
4566             ;;
4567     esac
4568
4569 elif enabled avr32; then
4570
4571     case $cpu in
4572         ap7[02]0[0-2])
4573             subarch="avr32_ap"
4574             cpuflags="-mpart=$cpu"
4575         ;;
4576         ap)
4577             subarch="avr32_ap"
4578             cpuflags="-march=$cpu"
4579         ;;
4580         uc3[ab]*)
4581             subarch="avr32_uc"
4582             cpuflags="-mcpu=$cpu"
4583         ;;
4584         uc)
4585             subarch="avr32_uc"
4586             cpuflags="-march=$cpu"
4587         ;;
4588     esac
4589
4590 elif enabled bfin; then
4591
4592     cpuflags="-mcpu=$cpu"
4593
4594 elif enabled mips; then
4595
4596     cpuflags="-march=$cpu"
4597
4598     if [ "$cpu" != "generic" ]; then
4599         disable mips32r2
4600         disable mips32r5
4601         disable mips64r2
4602         disable mips32r6
4603         disable mips64r6
4604         disable loongson2
4605         disable loongson3
4606
4607         case $cpu in
4608             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4609                 enable mips32r2
4610                 disable msa
4611             ;;
4612             p5600|i6400|p6600)
4613                 disable mipsdsp
4614                 disable mipsdspr2
4615             ;;
4616             loongson*)
4617                 enable loongson2
4618                 enable loongson3
4619                 enable local_aligned
4620                 enable simd_align_16
4621                 enable fast_64bit
4622                 enable fast_clz
4623                 enable fast_cmov
4624                 enable fast_unaligned
4625                 disable aligned_stack
4626                 disable mipsfpu
4627                 disable mipsdsp
4628                 disable mipsdspr2
4629                 case $cpu in
4630                     loongson3*)
4631                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4632                     ;;
4633                     loongson2e)
4634                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4635                     ;;
4636                     loongson2f)
4637                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4638                     ;;
4639                 esac
4640             ;;
4641             *)
4642                 # Unknown CPU. Disable everything.
4643                 warn "unknown CPU. Disabling all MIPS optimizations."
4644                 disable mipsfpu
4645                 disable mipsdsp
4646                 disable mipsdspr2
4647                 disable msa
4648                 disable mmi
4649             ;;
4650         esac
4651
4652         case $cpu in
4653             24kc)
4654                 disable mipsfpu
4655                 disable mipsdsp
4656                 disable mipsdspr2
4657             ;;
4658             24kf*)
4659                 disable mipsdsp
4660                 disable mipsdspr2
4661             ;;
4662             24kec|34kc|1004kc)
4663                 disable mipsfpu
4664                 disable mipsdspr2
4665             ;;
4666             24kef*|34kf*|1004kf*)
4667                 disable mipsdspr2
4668             ;;
4669             74kc)
4670                 disable mipsfpu
4671             ;;
4672             p5600)
4673                 enable mips32r5
4674                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4675             ;;
4676             i6400)
4677                 enable mips64r6
4678                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4679             ;;
4680             p6600)
4681                 enable mips64r6
4682                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4683             ;;
4684         esac
4685     else
4686         # We do not disable anything. Is up to the user to disable the unwanted features.
4687         warn 'generic cpu selected'
4688     fi
4689
4690 elif enabled ppc; then
4691
4692     disable ldbrx
4693
4694     case $(tolower $cpu) in
4695         601|ppc601|powerpc601)
4696             cpuflags="-mcpu=601"
4697             disable altivec
4698         ;;
4699         603*|ppc603*|powerpc603*)
4700             cpuflags="-mcpu=603"
4701             disable altivec
4702         ;;
4703         604*|ppc604*|powerpc604*)
4704             cpuflags="-mcpu=604"
4705             disable altivec
4706         ;;
4707         g3|75*|ppc75*|powerpc75*)
4708             cpuflags="-mcpu=750"
4709             disable altivec
4710         ;;
4711         g4|745*|ppc745*|powerpc745*)
4712             cpuflags="-mcpu=7450"
4713             disable vsx
4714         ;;
4715         74*|ppc74*|powerpc74*)
4716             cpuflags="-mcpu=7400"
4717             disable vsx
4718         ;;
4719         g5|970|ppc970|powerpc970)
4720             cpuflags="-mcpu=970"
4721             disable vsx
4722         ;;
4723         power[3-6]*)
4724             cpuflags="-mcpu=$cpu"
4725             disable vsx
4726         ;;
4727         power[7-8]*)
4728             cpuflags="-mcpu=$cpu"
4729         ;;
4730         cell)
4731             cpuflags="-mcpu=cell"
4732             enable ldbrx
4733             disable vsx
4734         ;;
4735         e500mc)
4736             cpuflags="-mcpu=e500mc"
4737             disable altivec
4738         ;;
4739         e500v2)
4740             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4741             disable altivec
4742             disable dcbzl
4743         ;;
4744         e500)
4745             cpuflags="-mcpu=8540 -mhard-float"
4746             disable altivec
4747             disable dcbzl
4748         ;;
4749     esac
4750
4751 elif enabled sparc; then
4752
4753     case $cpu in
4754         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4755             cpuflags="-mcpu=$cpu"
4756         ;;
4757         ultrasparc*|niagara[234])
4758             cpuflags="-mcpu=$cpu"
4759         ;;
4760     esac
4761
4762 elif enabled x86; then
4763
4764     case $cpu in
4765         i[345]86|pentium)
4766             cpuflags="-march=$cpu"
4767             disable i686
4768             disable mmx
4769         ;;
4770         # targets that do NOT support nopl and conditional mov (cmov)
4771         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4772             cpuflags="-march=$cpu"
4773             disable i686
4774         ;;
4775         # targets that do support nopl and conditional mov (cmov)
4776         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4777         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4778         |amdfam10|barcelona|b[dt]ver*|znver*)
4779             cpuflags="-march=$cpu"
4780             enable i686
4781             enable fast_cmov
4782         ;;
4783         # targets that do support conditional mov but on which it's slow
4784         pentium4|pentium4m|prescott|nocona)
4785             cpuflags="-march=$cpu"
4786             enable i686
4787             disable fast_cmov
4788         ;;
4789     esac
4790
4791 fi
4792
4793 if [ "$cpu" != generic ]; then
4794     add_cflags  $cpuflags
4795     add_asflags $cpuflags
4796     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4797 fi
4798
4799 # compiler sanity check
4800 check_exec <<EOF
4801 int main(void){ return 0; }
4802 EOF
4803 if test "$?" != 0; then
4804     echo "$cc is unable to create an executable file."
4805     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4806         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4807         echo "Only do this if you know what cross compiling means."
4808     fi
4809     die "C compiler test failed."
4810 fi
4811
4812 add_cppflags -D_ISOC99_SOURCE
4813 add_cxxflags -D__STDC_CONSTANT_MACROS
4814 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4815
4816 # some compilers silently accept -std=c11, so we also need to check that the
4817 # version macro is defined properly
4818 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4819     add_cflags -std=c11 ||
4820     check_cflags -std=c99
4821
4822 check_cppflags -D_FILE_OFFSET_BITS=64
4823 check_cppflags -D_LARGEFILE_SOURCE
4824
4825 add_host_cppflags -D_ISOC99_SOURCE
4826 check_host_cflags -std=c99
4827 check_host_cflags -Wall
4828 check_host_cflags $host_cflags_speed
4829
4830 check_64bit(){
4831     arch32=$1
4832     arch64=$2
4833     expr=$3
4834     check_code cc "" "int test[2*($expr) - 1]" &&
4835         subarch=$arch64 || subarch=$arch32
4836     enable $subarch
4837 }
4838
4839 case "$arch" in
4840     aarch64|alpha|ia64)
4841         enabled shared && enable_weak pic
4842     ;;
4843     mips)
4844         check_64bit mips mips64 '_MIPS_SIM > 1'
4845         enabled shared && enable_weak pic
4846     ;;
4847     parisc)
4848         check_64bit parisc parisc64 'sizeof(void *) > 4'
4849         enabled shared && enable_weak pic
4850     ;;
4851     ppc)
4852         check_64bit ppc ppc64 'sizeof(void *) > 4'
4853         enabled shared && enable_weak pic
4854     ;;
4855     s390)
4856         check_64bit s390 s390x 'sizeof(void *) > 4'
4857         enabled shared && enable_weak pic
4858     ;;
4859     sparc)
4860         check_64bit sparc sparc64 'sizeof(void *) > 4'
4861         enabled shared && enable_weak pic
4862     ;;
4863     x86)
4864         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4865         # Treat x32 as x64 for now. Note it also needs pic if shared
4866         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4867             subarch=x86_64 && enable x86_64 && disable x86_32
4868         if enabled x86_64; then
4869             enabled shared && enable_weak pic
4870             objformat=elf64
4871         fi
4872     ;;
4873 esac
4874
4875 # OS specific
4876 case $target_os in
4877     aix)
4878         SHFLAGS=-shared
4879         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4880         enabled shared && add_ldflags -Wl,-brtl
4881         arflags='-Xany -r -c'
4882         ;;
4883     android)
4884         disable symver
4885         enable section_data_rel_ro
4886         SLIB_INSTALL_NAME='$(SLIBNAME)'
4887         SLIB_INSTALL_LINKS=
4888         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4889         ;;
4890     haiku)
4891         prefix_default="/boot/common"
4892         network_extralibs="-lnetwork"
4893         host_extralibs=
4894         ;;
4895     sunos)
4896         SHFLAGS='-shared -Wl,-h,$$(@F)'
4897         enabled x86 && append SHFLAGS -mimpure-text
4898         network_extralibs="-lsocket -lnsl"
4899         add_cppflags -D__EXTENSIONS__
4900         # When using suncc to build, the Solaris linker will mark
4901         # an executable with each instruction set encountered by
4902         # the Solaris assembler.  As our libraries contain their own
4903         # guards for processor-specific code, instead suppress
4904         # generation of the HWCAPS ELF section on Solaris x86 only.
4905         enabled_all suncc x86 &&
4906             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4907             add_ldflags -Wl,-M,mapfile
4908         nm_default='nm -P -g'
4909         version_script='-M'
4910         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4911         ;;
4912     netbsd)
4913         disable symver
4914         oss_indev_extralibs="-lossaudio"
4915         oss_outdev_extralibs="-lossaudio"
4916         enabled gcc || check_ldflags -Wl,-zmuldefs
4917         ;;
4918     openbsd|bitrig)
4919         disable symver
4920         SHFLAGS='-shared'
4921         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4922         SLIB_INSTALL_LINKS=
4923         oss_indev_extralibs="-lossaudio"
4924         oss_outdev_extralibs="-lossaudio"
4925         ;;
4926     dragonfly)
4927         disable symver
4928         ;;
4929     freebsd)
4930         ;;
4931     bsd/os)
4932         add_extralibs -lpoll -lgnugetopt
4933         strip="strip -d"
4934         ;;
4935     darwin)
4936         enabled ppc && add_asflags -force_cpusubtype_ALL
4937         install_name_dir_default='$(SHLIBDIR)'
4938         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4939         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4940         strip="${strip} -x"
4941         add_ldflags -Wl,-dynamic,-search_paths_first
4942         check_cflags -Werror=partial-availability
4943         SLIBSUF=".dylib"
4944         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4945         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4946         enabled x86_64 && objformat="macho64" || objformat="macho32"
4947         enabled_any pic shared x86_64 ||
4948             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4949         check_header dispatch/dispatch.h &&
4950             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4951         if test -n "$sysroot"; then
4952             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4953             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4954         fi
4955         version_script='-exported_symbols_list'
4956         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4957         ;;
4958     msys*)
4959         die "Native MSYS builds are discouraged, please use the MINGW environment."
4960         ;;
4961     mingw32*|mingw64*)
4962         target_os=mingw32
4963         if enabled shared; then
4964             # Cannot build both shared and static libs when using dllimport.
4965             disable static
4966         fi
4967         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4968         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4969         shlibdir_default="$bindir_default"
4970         SLIBPREF=""
4971         SLIBSUF=".dll"
4972         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4973         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4974         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4975         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4976         SLIB_INSTALL_LINKS=
4977         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4978         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4979         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4980         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4981         enabled x86_64 && objformat="win64" || objformat="win32"
4982         ranlib=:
4983         enable dos_paths
4984         check_ldflags -Wl,--nxcompat,--dynamicbase
4985         # Lets work around some stupidity in binutils.
4986         # ld will strip relocations from executables even though we need them
4987         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4988         # however ld then forgets what the entry point should be (oops) so we
4989         # have to manually (re)set it.
4990         if enabled x86_32; then
4991             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4992         elif enabled x86_64; then
4993             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4994             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4995             # Set image base >4GB for extra entropy with HEASLR
4996             add_ldexeflags -Wl,--image-base,0x140000000
4997             append SHFLAGS -Wl,--image-base,0x180000000
4998         fi
4999         ;;
5000     win32|win64)
5001         disable symver
5002         if enabled shared; then
5003             # Link to the import library instead of the normal static library
5004             # for shared libs.
5005             LD_LIB='%.lib'
5006             # Cannot build both shared and static libs with MSVC or icl.
5007             disable static
5008         fi
5009         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5010         shlibdir_default="$bindir_default"
5011         SLIBPREF=""
5012         SLIBSUF=".dll"
5013         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5014         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5015         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5016         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5017         SLIB_INSTALL_LINKS=
5018         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5019         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5020         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5021         enabled x86_64 && objformat="win64" || objformat="win32"
5022         ranlib=:
5023         enable dos_paths
5024         ;;
5025     cygwin*)
5026         target_os=cygwin
5027         shlibdir_default="$bindir_default"
5028         SLIBPREF="cyg"
5029         SLIBSUF=".dll"
5030         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5031         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5032         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5033         SLIB_INSTALL_LINKS=
5034         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5035         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5036         enabled x86_64 && objformat="win64" || objformat="win32"
5037         enable dos_paths
5038         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5039         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5040         ;;
5041     *-dos|freedos|opendos)
5042         network_extralibs="-lsocket"
5043         objformat="coff"
5044         enable dos_paths
5045         add_cppflags -U__STRICT_ANSI__
5046         ;;
5047     linux)
5048         enable section_data_rel_ro
5049         enabled_any arm aarch64 && enable_weak linux_perf
5050         ;;
5051     irix*)
5052         target_os=irix
5053         ranlib="echo ignoring ranlib"
5054         ;;
5055     os/2*)
5056         strip="lxlite -CS"
5057         striptype=""
5058         objformat="aout"
5059         add_cppflags -D_GNU_SOURCE
5060         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5061         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5062         LIBSUF="_s.a"
5063         SLIBPREF=""
5064         SLIBSUF=".dll"
5065         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5066         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5067         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5068             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5069             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5070             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5071             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5072         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5073             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5074         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5075         SLIB_INSTALL_LINKS=
5076         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5077         enable dos_paths
5078         enable_weak os2threads
5079         ;;
5080     gnu/kfreebsd)
5081         add_cppflags -D_BSD_SOURCE
5082         ;;
5083     gnu)
5084         ;;
5085     qnx)
5086         add_cppflags -D_QNX_SOURCE
5087         network_extralibs="-lsocket"
5088         ;;
5089     symbian)
5090         SLIBSUF=".dll"
5091         enable dos_paths
5092         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5093         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5094         add_ldflags -Wl,--target1-abs,--no-undefined \
5095                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5096                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5097         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5098                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5099                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5100         ;;
5101     minix)
5102         ;;
5103     none)
5104         ;;
5105     *)
5106         die "Unknown OS '$target_os'."
5107         ;;
5108 esac
5109
5110 # test if creating links works
5111 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5112 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5113 mkdir "$link_dest"
5114 $ln_s "$link_dest" "$link_name"
5115 touch "$link_dest/test_file"
5116 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5117     # create link to source path
5118     [ -e src ] && rm src
5119     $ln_s "$source_path" src
5120     source_link=src
5121 else
5122     # creating directory links doesn't work
5123     # fall back to using the full source path
5124     source_link="$source_path"
5125 fi
5126 # cleanup
5127 rm -r "$link_dest"
5128 rm -r "$link_name"
5129
5130 # determine libc flavour
5131
5132 probe_libc(){
5133     pfx=$1
5134     pfx_no_=${pfx%_}
5135     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5136     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5137         eval ${pfx}libc_type=uclibc
5138         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5139     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5140         eval ${pfx}libc_type=glibc
5141         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5142     # MinGW headers can be installed on Cygwin, so check for newlib first.
5143     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5144         eval ${pfx}libc_type=newlib
5145         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5146     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5147     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5148         eval ${pfx}libc_type=mingw64
5149         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5150             add_compat msvcrt/snprintf.o
5151             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5152         fi
5153         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5154         eval test \$${pfx_no_}cc_type = "gcc" &&
5155             add_${pfx}cppflags -D__printf__=__gnu_printf__
5156     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5157          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5158         eval ${pfx}libc_type=mingw32
5159         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5160             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5161             die "ERROR: MinGW32 runtime version must be >= 3.15."
5162         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5163         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5164             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5165         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5166             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5167         eval test \$${pfx_no_}cc_type = "gcc" &&
5168             add_${pfx}cppflags -D__printf__=__gnu_printf__
5169     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5170         eval ${pfx}libc_type=msvcrt
5171         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5172             if [ "$pfx" = host_ ]; then
5173                 add_host_cppflags -Dsnprintf=_snprintf
5174             else
5175                 add_compat strtod.o strtod=avpriv_strtod
5176                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5177                                              _snprintf=avpriv_snprintf  \
5178                                              vsnprintf=avpriv_vsnprintf
5179             fi
5180         fi
5181         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5182         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5183         # 0x601 by default unless something else is set by the user.
5184         # This can easily lead to us detecting functions only present
5185         # in such new versions and producing binaries requiring windows 7.0.
5186         # Therefore explicitly set the default to XP unless the user has
5187         # set something else on the command line.
5188         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5189         # family. For these cases, configure is free to use any functions
5190         # found in the SDK headers by default. (Alternatively, we could force
5191         # _WIN32_WINNT to 0x0602 in that case.)
5192         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5193             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5194 #ifdef WINAPI_FAMILY
5195 #include <winapifamily.h>
5196 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5197 #error not desktop
5198 #endif
5199 #endif
5200 EOF
5201         if [ "$pfx" = "" ]; then
5202             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5203             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5204         fi
5205     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5206         eval ${pfx}libc_type=klibc
5207     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5208         eval ${pfx}libc_type=bionic
5209     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5210         eval ${pfx}libc_type=solaris
5211         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5212     fi
5213     check_${pfx}cc <<EOF
5214 #include <time.h>
5215 void *v = localtime_r;
5216 EOF
5217 test "$?" != 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
5218 #include <time.h>
5219 void *v = localtime_r;
5220 EOF
5221
5222     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5223 }
5224
5225 probe_libc
5226 probe_libc host_
5227
5228 # hacks for compiler/libc/os combinations
5229
5230 case $libc_type in
5231     bionic)
5232         add_compat strtod.o strtod=avpriv_strtod
5233         ;;
5234 esac
5235
5236 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5237     add_cppflags '-I\$(SRC_PATH)/compat/float'
5238
5239 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5240
5241 set_default libdir
5242 : ${shlibdir_default:="$libdir"}
5243 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5244
5245 set_default $PATHS_LIST
5246 set_default nm
5247
5248 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5249
5250 enable_weak_pic() {
5251     disabled pic && return
5252     enable pic
5253     add_cppflags -DPIC
5254     case "$target_os" in
5255     mingw*|cygwin*|win*)
5256         ;;
5257     *)
5258         add_cflags -fPIC
5259         add_asflags -fPIC
5260         ;;
5261     esac
5262 }
5263
5264 enabled pic && enable_weak_pic
5265
5266 check_cc <<EOF || die "Symbol mangling check failed."
5267 int ff_extern;
5268 EOF
5269 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5270 extern_prefix=${sym%%ff_extern*}
5271
5272 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5273
5274 _restrict=
5275 for restrict_keyword in restrict __restrict__ __restrict; do
5276     check_cc <<EOF && _restrict=$restrict_keyword && break
5277 void foo(char * $restrict_keyword p);
5278 EOF
5279 done
5280
5281 check_cc <<EOF && enable pragma_deprecated
5282 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5283 EOF
5284
5285 check_cc <<EOF || die "endian test failed"
5286 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5287 EOF
5288 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5289
5290 check_cc <<EOF && enable const_nan
5291 #include <math.h>
5292 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5293 EOF
5294
5295 if ! enabled ppc64 || enabled bigendian; then
5296     disable vsx
5297 fi
5298
5299 check_gas() {
5300     log "check_gas using '$as' as AS"
5301     # :vararg is used on aarch64, arm and ppc altivec
5302     check_as <<EOF || return 1
5303 .macro m n, y:vararg=0
5304 \n: .int \y
5305 .endm
5306 m x
5307 EOF
5308     # .altmacro is only used in arm asm
5309     ! enabled arm || check_as <<EOF || return 1
5310 .altmacro
5311 EOF
5312     enable gnu_as
5313     return 0
5314 }
5315
5316 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5317     nogas=:
5318     enabled_any arm aarch64 && nogas=die
5319     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5320     as_noop=-v
5321
5322     case $as_type in
5323         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5324         gcc)  gaspp_as_type=gas ;;
5325         *)    gaspp_as_type=$as_type ;;
5326     esac
5327
5328     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5329
5330     test "${as#*gas-preprocessor.pl}" != "$as" ||
5331     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5332         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5333
5334     if ! check_gas ; then
5335         as=${gas:=$as}
5336         check_gas || \
5337             $nogas "GNU assembler not found, install/update gas-preprocessor"
5338     fi
5339
5340     check_as <<EOF && enable as_func
5341 .func test
5342 .endfunc
5343 EOF
5344 fi
5345
5346 check_inline_asm inline_asm_labels '"1:\n"'
5347
5348 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5349
5350 if enabled aarch64; then
5351     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5352     # internal assembler in clang 3.3 does not support this instruction
5353     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5354     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5355
5356     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5357
5358 elif enabled alpha; then
5359
5360     check_cflags -mieee
5361
5362 elif enabled arm; then
5363
5364     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5365
5366     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5367 float func(float a, float b){ return a+b; }
5368 EOF
5369
5370     enabled thumb && check_cflags -mthumb || check_cflags -marm
5371
5372     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5373         enable vfp_args
5374     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5375         enable vfp_args
5376     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5377         case "${cross_prefix:-$cc}" in
5378             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5379             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5380 __asm__ (".eabi_attribute 28, 1");
5381 int main(void) { return 0; }
5382 EOF
5383         esac
5384         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5385     fi
5386
5387     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5388     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5389     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5390     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5391     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5392     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5393     enabled setend  && check_insn setend  'setend be'
5394
5395     [ $target_os = linux ] || [ $target_os = android ] ||
5396         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5397             $ARCH_EXT_LIST_ARM
5398
5399     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5400
5401     check_as <<EOF && enable as_arch_directive
5402 .arch armv7-a
5403 EOF
5404     check_as <<EOF && enable as_fpu_directive
5405 .fpu neon
5406 EOF
5407
5408     # llvm's integrated assembler supports .object_arch from llvm 3.5
5409     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5410         check_as <<EOF && enable as_object_arch
5411 .object_arch armv4
5412 EOF
5413
5414     # MS armasm fails to assemble our PIC constructs
5415     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5416
5417 elif enabled mips; then
5418
5419     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5420     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5421     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5422
5423     # Enable minimum ISA based on selected options
5424     if enabled mips64; then
5425         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5426         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5427         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5428     else
5429         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5430         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5431         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5432         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5433     fi
5434
5435     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5436     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5437     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5438     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5439     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5440
5441     if enabled bigendian && enabled msa; then
5442         disable msa
5443     fi
5444
5445 elif enabled parisc; then
5446
5447     if enabled gcc; then
5448         case $($cc -dumpversion) in
5449             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5450         esac
5451     fi
5452
5453 elif enabled ppc; then
5454
5455     enable local_aligned
5456
5457     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5458     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5459     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5460     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5461
5462     if enabled altivec; then
5463         check_cflags -maltivec -mabi=altivec
5464
5465         # check if our compiler supports Motorola AltiVec C API
5466         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5467                                  vector signed int v2 = (vector signed int) { 1 };
5468                                  v1 = vec_add(v1, v2);" ||
5469             disable altivec
5470
5471         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5472     fi
5473
5474     if enabled vsx; then
5475         check_cflags -mvsx &&
5476         check_code cc altivec.h "int v[4] = { 0 };
5477                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5478             disable vsx
5479     fi
5480
5481     if enabled power8; then
5482         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5483     fi
5484
5485 elif enabled x86; then
5486
5487     check_builtin rdtsc    intrin.h   "__rdtsc()"
5488     check_builtin mm_empty mmintrin.h "_mm_empty()"
5489
5490     enable local_aligned
5491
5492     # check whether EBP is available on x86
5493     # As 'i' is stored on the stack, this program will crash
5494     # if the base pointer is used to access it because the
5495     # base pointer is cleared in the inline assembly code.
5496     check_exec_crash <<EOF && enable ebp_available
5497 volatile int i=0;
5498 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5499 return i;
5500 EOF
5501
5502     # check whether EBX is available on x86
5503     check_inline_asm ebx_available '""::"b"(0)' &&
5504         check_inline_asm ebx_available '"":::"%ebx"'
5505
5506     # check whether xmm clobbers are supported
5507     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5508
5509     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5510         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5511
5512     # check whether binutils is new enough to compile SSSE3/MMXEXT
5513     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5514     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5515
5516     probe_x86asm(){
5517         x86asmexe_probe=$1
5518         if check_cmd $x86asmexe_probe -v; then
5519             x86asmexe=$x86asmexe_probe
5520             x86asm_type=nasm
5521             x86asm_debug="-g -F dwarf"
5522             X86ASMDEP=
5523             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5524         elif check_cmd $x86asmexe_probe --version; then
5525             x86asmexe=$x86asmexe_probe
5526             x86asm_type=yasm
5527             x86asm_debug="-g dwarf2"
5528             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5529             X86ASM_DEPFLAGS=
5530         fi
5531         check_x86asm "movbe ecx, [5]" && enable x86asm
5532     }
5533
5534     if ! disabled_any asm mmx x86asm; then
5535         disable x86asm
5536         for program in $x86asmexe nasm yasm; do
5537             probe_x86asm $program && break
5538         done
5539         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5540         X86ASMFLAGS="-f $objformat"
5541         enabled pic               && append X86ASMFLAGS "-DPIC"
5542         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5543         case "$objformat" in
5544             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5545         esac
5546
5547         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5548         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5549         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5550         check_x86asm "CPU amdnop" || disable cpunop
5551     fi
5552
5553     case "$cpu" in
5554         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5555             disable fast_clz
5556         ;;
5557     esac
5558
5559 fi
5560
5561 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5562
5563 check_ldflags -Wl,--as-needed
5564 check_ldflags -Wl,-z,noexecstack
5565
5566 if ! disabled network; then
5567     check_func getaddrinfo $network_extralibs
5568     check_func inet_aton $network_extralibs
5569
5570     check_type netdb.h "struct addrinfo"
5571     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5572     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5573     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5574     check_type poll.h "struct pollfd"
5575     check_type netinet/sctp.h "struct sctp_event_subscribe"
5576     check_struct "sys/socket.h" "struct msghdr" msg_flags
5577     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5578     check_type netinet/in.h "struct sockaddr_in6"
5579     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5580     check_type "sys/types.h sys/socket.h" socklen_t
5581
5582     # Prefer arpa/inet.h over winsock2
5583     if check_header arpa/inet.h ; then
5584         check_func closesocket
5585     elif check_header winsock2.h ; then
5586         check_func_headers winsock2.h closesocket -lws2 &&
5587             network_extralibs="-lws2" ||
5588         { check_func_headers winsock2.h closesocket -lws2_32 &&
5589             network_extralibs="-lws2_32"; } || disable winsock2_h network
5590         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5591
5592         check_type ws2tcpip.h socklen_t
5593         check_type ws2tcpip.h "struct addrinfo"
5594         check_type ws2tcpip.h "struct group_source_req"
5595         check_type ws2tcpip.h "struct ip_mreq_source"
5596         check_type ws2tcpip.h "struct ipv6_mreq"
5597         check_type winsock2.h "struct pollfd"
5598         check_struct winsock2.h "struct sockaddr" sa_len
5599         check_type ws2tcpip.h "struct sockaddr_in6"
5600         check_type ws2tcpip.h "struct sockaddr_storage"
5601     else
5602         disable network
5603     fi
5604 fi
5605
5606 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5607 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5608 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5609 check_builtin sarestart signal.h "SA_RESTART"
5610 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5611 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5612 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5613 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5614
5615 case "$custom_allocator" in
5616     jemalloc)
5617         # jemalloc by default does not use a prefix
5618         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5619     ;;
5620     tcmalloc)
5621         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5622         malloc_prefix=tc_
5623     ;;
5624 esac
5625
5626 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5627 check_func  ${malloc_prefix}memalign            && enable memalign
5628 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5629
5630 check_func  access
5631 check_func_headers stdlib.h arc4random
5632 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5633 check_func  fcntl
5634 check_func  fork
5635 check_func  gethrtime
5636 check_func  getopt
5637 check_func  getrusage
5638 check_func  gettimeofday
5639 check_func  isatty
5640 check_func  mkstemp
5641 check_func  mmap
5642 check_func  mprotect
5643 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5644 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5645 check_func  sched_getaffinity
5646 check_func  setrlimit
5647 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5648 check_func  strerror_r
5649 check_func  sysconf
5650 check_func  sysctl
5651 check_func  usleep
5652
5653 check_func_headers conio.h kbhit
5654 check_func_headers io.h setmode
5655 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5656 check_func_headers mach/mach_time.h mach_absolute_time
5657 check_func_headers stdlib.h getenv
5658 check_func_headers sys/stat.h lstat
5659
5660 check_func_headers windows.h GetProcessAffinityMask
5661 check_func_headers windows.h GetProcessTimes
5662 check_func_headers windows.h GetSystemTimeAsFileTime
5663 check_func_headers windows.h LoadLibrary
5664 check_func_headers windows.h MapViewOfFile
5665 check_func_headers windows.h PeekNamedPipe
5666 check_func_headers windows.h SetConsoleTextAttribute
5667 check_func_headers windows.h SetConsoleCtrlHandler
5668 check_func_headers windows.h Sleep
5669 check_func_headers windows.h VirtualAlloc
5670 check_struct windows.h "CONDITION_VARIABLE" Ptr
5671 check_func_headers glob.h glob
5672 enabled xlib &&
5673     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5674
5675 check_header direct.h
5676 check_header dirent.h
5677 check_header dxgidebug.h
5678 check_header dxva.h
5679 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5680 check_header io.h
5681 check_header libcrystalhd/libcrystalhd_if.h
5682 check_header malloc.h
5683 check_header net/udplite.h
5684 check_header poll.h
5685 check_header sys/param.h
5686 check_header sys/resource.h
5687 check_header sys/select.h
5688 check_header sys/time.h
5689 check_header sys/un.h
5690 check_header termios.h
5691 check_header unistd.h
5692 check_header valgrind/valgrind.h
5693 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5694 check_header windows.h
5695 check_header X11/extensions/XvMClib.h
5696 check_header asm/types.h
5697
5698 # it seems there are versions of clang in some distros that try to use the
5699 # gcc headers, which explodes for stdatomic
5700 # so we also check that atomics actually work here
5701 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5702
5703 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5704 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5705 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5706 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5707 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5708
5709 enabled appkit       && check_apple_framework AppKit
5710 enabled audiotoolbox && check_apple_framework AudioToolbox
5711 enabled avfoundation && check_apple_framework AVFoundation
5712 enabled coreimage    && check_apple_framework CoreImage
5713 enabled videotoolbox && check_apple_framework VideoToolbox
5714
5715 check_apple_framework CoreFoundation
5716 check_apple_framework CoreMedia
5717 check_apple_framework CoreVideo
5718
5719 enabled avfoundation && {
5720     disable coregraphics applicationservices
5721     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5722     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5723
5724 enabled videotoolbox && {
5725     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5726     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5727 }
5728
5729 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5730
5731 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5732 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5733 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5734 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5735 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5736
5737 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5738 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5739 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5740 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5741 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5742 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5743 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5744 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5745 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5746
5747 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5748
5749 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5750
5751 if ! disabled w32threads && ! enabled pthreads; then
5752     check_func_headers "windows.h process.h" _beginthreadex &&
5753         enable w32threads || disable w32threads
5754     if ! enabled w32threads && enabled winrt; then
5755         check_func_headers "windows.h" CreateThread &&
5756             enable w32threads || disable w32threads
5757     fi
5758 fi
5759
5760 # check for some common methods of building with pthread support
5761 # do this before the optional library checks as some of them require pthreads
5762 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5763     if check_lib pthreads pthread.h pthread_join   -pthread &&
5764        check_lib pthreads pthread.h pthread_create -pthread; then
5765         add_cflags -pthread
5766     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5767          check_lib pthreads pthread.h pthread_create -pthreads; then
5768         add_cflags -pthreads
5769     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5770          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5771         add_cflags -ldl -pthread
5772     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5773          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5774         :
5775     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5776          check_lib pthreads pthread.h pthread_create -lpthread; then
5777         :
5778     elif check_func pthread_join && check_func pthread_create; then
5779         enable pthreads
5780     fi
5781     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5782
5783     if enabled pthreads; then
5784         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5785         check_func pthread_cancel $pthreads_extralibs
5786     fi
5787 fi
5788
5789 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5790 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5791 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5792
5793 # On some systems dynamic loading requires no extra linker flags
5794 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5795
5796 check_lib libm math.h sin -lm
5797
5798 atan2f_args=2
5799 copysign_args=2
5800 hypot_args=2
5801 ldexpf_args=2
5802 powf_args=2
5803
5804 for func in $MATH_FUNCS; do
5805     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5806 done
5807
5808 for func in $COMPLEX_FUNCS; do
5809     eval check_complexfunc $func \${${func}_args:-1}
5810 done
5811
5812 # these are off by default, so fail if requested and not available
5813 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5814 enabled cuvid             && { enabled cuda ||
5815                                die "ERROR: CUVID requires CUDA"; }
5816 enabled nvdec             && { enabled cuda ||
5817                                die "ERROR: NVDEC hwaccel requires CUDA"; }
5818 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5819 enabled decklink          && { require_header DeckLinkAPI.h &&
5820                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5821 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5822 enabled frei0r            && require_header frei0r.h
5823 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5824 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5825 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5826 enabled ladspa            && require_header ladspa.h
5827 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5828 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5829 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5830 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5831 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5832                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5833                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5834 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5835 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5836 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5837 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5838                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5839                                  warn "using libfdk without pkg-config"; } }
5840 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"
5841 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5842 enabled fontconfig        && enable libfontconfig
5843 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5844 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5845 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5846 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5847                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5848 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5849                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5850                                done || die "ERROR: libgsm not found"; }
5851 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5852 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5853 # While it may appear that require is being used as a pkg-config
5854 # fallback for libmfx, it is actually being used to detect a different
5855 # installation route altogether.  If libmfx is installed via the Intel
5856 # Media SDK or Intel Media Server Studio, these don't come with
5857 # pkg-config support.  Instead, users should make sure that the build
5858 # can find the libraries and headers through other means.
5859 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5860                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5861 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5862 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5863 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5864 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5865                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5866                                die "ERROR: libnpp not found"; }
5867 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5868 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5869 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5870                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5871                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5872                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5873 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5874 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5875                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5876 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5877 enabled libopus           && {
5878     enabled libopus_decoder && {
5879         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5880     }
5881     enabled libopus_encoder && {
5882         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5883     }
5884 }
5885 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5886 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5887 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5888 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5889 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5890 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5891                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5892 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5893 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5894 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5895 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5896 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5897 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5898 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5899                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5900                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5901 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5902 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5903 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5904 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5905 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5906                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5907
5908 enabled libvpx            && {
5909     enabled libvpx_vp8_decoder && {
5910         check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5911             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5912                 die "ERROR: libvpx decoder version must be >=1.4.0";
5913     }
5914     enabled libvpx_vp8_encoder && {
5915         check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5916             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
5917                 die "ERROR: libvpx encoder version must be >=1.4.0";
5918     }
5919     enabled libvpx_vp9_decoder && {
5920         check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5921             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" -lvpx
5922     }
5923     enabled libvpx_vp9_encoder && {
5924         check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5925             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" -lvpx
5926     }
5927     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5928         die "libvpx enabled but no supported decoders found"
5929     fi
5930 }
5931
5932 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5933 enabled libwebp           && {
5934     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5935     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5936 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5937                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5938                                  warn "using libx264 without pkg-config"; } } &&
5939                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5940                              { check_cpp_condition x264.h "X264_MPEG2" &&
5941                                enable libx262; }
5942 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5943                              require_cpp_condition x265.h "X265_BUILD >= 68"
5944 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5945 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5946 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
5947 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5948 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5949                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5950                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5951 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5952 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5953 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5954                                { ! enabled cross_compile &&
5955                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5956                                  add_ldflags -L/opt/vc/lib/ &&
5957                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5958                                die "ERROR: mmal not found" &&
5959                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5960 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5961                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5962                                die "ERROR: openal not found"; } &&
5963                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5964                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5965 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5966                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5967                                die "ERROR: opencl not found"; } &&
5968                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5969                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5970                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5971 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5972                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5973                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5974                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5975                                die "ERROR: opengl not found."
5976                              }
5977 enabled omx               && require_header OMX_Core.h
5978 enabled omx_rpi           && { check_header OMX_Core.h ||
5979                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5980                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5981 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5982                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5983                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5984                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5985                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5986                                die "ERROR: openssl not found"; }
5987 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
5988                                  die "ERROR : Rockchip MPP was not found."; } &&
5989                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
5990                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
5991                                { enabled libdrm ||
5992                                  die "ERROR: rkmpp requires --enable-libdrm"; }
5993                              }
5994
5995 if enabled gcrypt; then
5996     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5997     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5998         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5999         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6000         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6001             die "ERROR: gcrypt not found"
6002         add_cflags $gcrypt_cflags
6003     else
6004         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6005     fi
6006 fi
6007
6008 if enabled sdl2; then
6009     SDL2_CONFIG="${cross_prefix}sdl2-config"
6010     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6011         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6012             disable sdl2
6013     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6014         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6015         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6016         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6017         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6018         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6019             enable sdl2
6020     fi
6021     if test $target_os = "mingw32"; then
6022         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6023     fi
6024 fi
6025
6026 if enabled decklink; then
6027     case $target_os in
6028         mingw32*|mingw64*|win32|win64)
6029             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6030             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6031             ;;
6032     esac
6033 fi
6034
6035 enabled securetransport &&
6036     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6037     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6038         disable securetransport
6039
6040 enabled securetransport &&
6041     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6042
6043 enabled schannel &&
6044     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6045     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6046     schannel_extralibs="-lsecur32" ||
6047         disable schannel
6048
6049 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6050 enabled makeinfo \
6051     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6052     && enable makeinfo_html || disable makeinfo_html
6053 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6054 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6055 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6056 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6057
6058 # check V4L2 codecs available in the API
6059 check_header linux/fb.h
6060 check_header linux/videodev2.h
6061 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6062 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6063 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6064 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6065 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6066 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6067 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6068 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6069 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6070 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6071 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6072
6073 check_header sys/videoio.h
6074 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6075
6076 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6077 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6078 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6079 # w32api 3.12 had it defined wrong
6080 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6081
6082 check_type "dshow.h" IBaseFilter
6083
6084 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6085 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6086     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6087     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6088     check_header "dev/ic/bt8xx.h"
6089
6090 if check_struct sys/soundcard.h audio_buf_info bytes; then
6091     enable_sanitized sys/soundcard.h
6092 else
6093     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6094     #include <sys/soundcard.h>
6095     audio_buf_info abc;
6096 EOF
6097 fi
6098
6099 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6100     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6101
6102 enabled libjack &&
6103     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6104
6105 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6106
6107 if enabled libcdio; then
6108     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6109     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6110     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6111     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6112     die "ERROR: No usable libcdio/cdparanoia found"
6113 fi
6114
6115 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6116     disable libxcb_shm libxcb_shape libxcb_xfixes
6117
6118 if enabled libxcb; then
6119     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6120     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6121     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6122 fi
6123
6124 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6125
6126 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6127 # the desktop api partition
6128 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6129 #ifdef WINAPI_FAMILY
6130 #include <winapifamily.h>
6131 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6132 #error desktop, not uwp
6133 #else
6134 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6135 #endif
6136 #else
6137 #error no family set
6138 #endif
6139 EOF
6140
6141 enabled vaapi &&
6142     check_lib vaapi va/va.h vaInitialize -lva
6143
6144 enabled vaapi &&
6145     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6146     disable vaapi
6147
6148 enabled vaapi &&
6149     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6150
6151 enabled vaapi &&
6152     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6153
6154 enabled vaapi &&
6155     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6156     enable vaapi_1
6157
6158 enabled vdpau &&
6159     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6160     disable vdpau
6161
6162 enabled vdpau &&
6163     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6164
6165 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6166
6167 if enabled x86; then
6168     case $target_os in
6169         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6170             ;;
6171         *)
6172             disable cuda cuvid nvdec nvenc
6173             ;;
6174     esac
6175 else
6176     disable cuda cuvid nvdec nvenc
6177 fi
6178
6179 enabled nvenc &&
6180     check_cc -I$source_path <<EOF || disable nvenc
6181 #include "compat/nvenc/nvEncodeAPI.h"
6182 NV_ENCODE_API_FUNCTION_LIST flist;
6183 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6184 int main(void) { return 0; }
6185 EOF
6186
6187 # Funny iconv installations are not unusual, so check it after all flags have been set
6188 if enabled libc_iconv; then
6189     check_func_headers iconv.h iconv
6190 elif enabled iconv; then
6191     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6192 fi
6193
6194 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6195
6196 # add some useful compiler flags if supported
6197 check_cflags -Wdeclaration-after-statement
6198 check_cflags -Wall
6199 check_cflags -Wdisabled-optimization
6200 check_cflags -Wpointer-arith
6201 check_cflags -Wredundant-decls
6202 check_cflags -Wwrite-strings
6203 check_cflags -Wtype-limits
6204 check_cflags -Wundef
6205 check_cflags -Wmissing-prototypes
6206 check_cflags -Wno-pointer-to-int-cast
6207 check_cflags -Wstrict-prototypes
6208 check_cflags -Wempty-body
6209
6210 if enabled extra_warnings; then
6211     check_cflags -Wcast-qual
6212     check_cflags -Wextra
6213     check_cflags -Wpedantic
6214 fi
6215
6216 check_disable_warning(){
6217     warning_flag=-W${1#-Wno-}
6218     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6219 }
6220
6221 test_cflags -Werror=unused-command-line-argument &&
6222     append unknown_warning_flags "-Werror=unused-command-line-argument"
6223 test_cflags -Werror=unknown-warning-option &&
6224     append unknown_warning_flags "-Werror=unknown-warning-option"
6225
6226 check_disable_warning -Wno-parentheses
6227 check_disable_warning -Wno-switch
6228 check_disable_warning -Wno-format-zero-length
6229 check_disable_warning -Wno-pointer-sign
6230 check_disable_warning -Wno-unused-const-variable
6231 check_disable_warning -Wno-bool-operation
6232
6233 check_disable_warning_headers(){
6234     warning_flag=-W${1#-Wno-}
6235     test_cflags $warning_flag && add_cflags_headers $1
6236 }
6237
6238 check_disable_warning_headers -Wno-deprecated-declarations
6239 check_disable_warning_headers -Wno-unused-variable
6240
6241 check_cc <<EOF && enable blocks_extension
6242 void (^block)(void);
6243 EOF
6244
6245 # add some linker flags
6246 check_ldflags -Wl,--warn-common
6247 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6248 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6249 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6250
6251 # add some strip flags
6252 check_stripflags -x
6253
6254 enabled neon_clobber_test &&
6255     check_ldflags -Wl,--wrap,avcodec_open2              \
6256                   -Wl,--wrap,avcodec_decode_audio4      \
6257                   -Wl,--wrap,avcodec_decode_video2      \
6258                   -Wl,--wrap,avcodec_decode_subtitle2   \
6259                   -Wl,--wrap,avcodec_encode_audio2      \
6260                   -Wl,--wrap,avcodec_encode_video2      \
6261                   -Wl,--wrap,avcodec_encode_subtitle    \
6262                   -Wl,--wrap,avcodec_send_packet        \
6263                   -Wl,--wrap,avcodec_receive_packet     \
6264                   -Wl,--wrap,avcodec_send_frame         \
6265                   -Wl,--wrap,avcodec_receive_frame      \
6266                   -Wl,--wrap,swr_convert                \
6267                   -Wl,--wrap,avresample_convert ||
6268     disable neon_clobber_test
6269
6270 enabled xmm_clobber_test &&
6271     check_ldflags -Wl,--wrap,avcodec_open2              \
6272                   -Wl,--wrap,avcodec_decode_audio4      \
6273                   -Wl,--wrap,avcodec_decode_video2      \
6274                   -Wl,--wrap,avcodec_decode_subtitle2   \
6275                   -Wl,--wrap,avcodec_encode_audio2      \
6276                   -Wl,--wrap,avcodec_encode_video2      \
6277                   -Wl,--wrap,avcodec_encode_subtitle    \
6278                   -Wl,--wrap,avcodec_send_packet        \
6279                   -Wl,--wrap,avcodec_receive_packet     \
6280                   -Wl,--wrap,avcodec_send_frame         \
6281                   -Wl,--wrap,avcodec_receive_frame      \
6282                   -Wl,--wrap,swr_convert                \
6283                   -Wl,--wrap,avresample_convert         \
6284                   -Wl,--wrap,sws_scale ||
6285     disable xmm_clobber_test
6286
6287 check_ld "cc" <<EOF && enable proper_dce
6288 extern const int array[512];
6289 static inline int func(void) { return array[0]; }
6290 int main(void) { return 0; }
6291 EOF
6292
6293 if enabled proper_dce; then
6294     echo "X { local: *; };" > $TMPV
6295     if test_ldflags -Wl,${version_script},$TMPV; then
6296         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6297         quotes='""'
6298         check_cc <<EOF && enable symver_asm_label
6299 void ff_foo(void) __asm__ ("av_foo@VERSION");
6300 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6301 EOF
6302         check_cc <<EOF && enable symver_gnu_asm
6303 __asm__(".symver ff_foo,av_foo@VERSION");
6304 void ff_foo(void) {}
6305 EOF
6306     fi
6307 fi
6308
6309 if [ -z "$optflags" ]; then
6310     if enabled small; then
6311         optflags=$cflags_size
6312     elif enabled optimizations; then
6313         optflags=$cflags_speed
6314     else
6315         optflags=$cflags_noopt
6316     fi
6317 fi
6318
6319 if [ -z "$nvccflags" ]; then
6320     nvccflags=$nvccflags_default
6321 fi
6322
6323 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6324     nvccflags="$nvccflags -m64"
6325 else
6326     nvccflags="$nvccflags -m32"
6327 fi
6328
6329 check_optflags(){
6330     check_cflags "$@"
6331     enabled lto && check_ldflags "$@"
6332 }
6333
6334 check_optflags $optflags
6335 check_optflags -fno-math-errno
6336 check_optflags -fno-signed-zeros
6337
6338 if enabled lto; then
6339     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6340     check_cflags  -flto
6341     check_ldflags -flto $cpuflags
6342     disable inline_asm_direct_symbol_refs
6343 fi
6344
6345 enabled ftrapv && check_cflags -ftrapv
6346
6347 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6348 int x;
6349 EOF
6350
6351
6352 if enabled icc; then
6353     # Just warnings, no remarks
6354     check_cflags -w1
6355     # -wd: Disable following warnings
6356     # 144, 167, 556: -Wno-pointer-sign
6357     # 188: enumerated type mixed with another type
6358     # 1292: attribute "foo" ignored
6359     # 1419: external declaration in primary source file
6360     # 10006: ignoring unknown option -fno-signed-zeros
6361     # 10148: ignoring unknown option -Wno-parentheses
6362     # 10156: ignoring option '-W'; no argument required
6363     # 13200: No EMMS instruction before call to function
6364     # 13203: No EMMS instruction before return from function
6365     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6366     # 11030: Warning unknown option --as-needed
6367     # 10156: ignoring option '-export'; no argument required
6368     check_ldflags -wd10156,11030
6369     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6370     enable ebp_available
6371     # The test above does not test linking
6372     enabled lto && disable symver_asm_label
6373     if enabled x86_32; then
6374         icc_version=$($cc -dumpversion)
6375         test ${icc_version%%.*} -ge 11 &&
6376             check_cflags -falign-stack=maintain-16-byte ||
6377             disable aligned_stack
6378     fi
6379 elif enabled gcc; then
6380     check_optflags -fno-tree-vectorize
6381     check_cflags -Werror=format-security
6382     check_cflags -Werror=implicit-function-declaration
6383     check_cflags -Werror=missing-prototypes
6384     check_cflags -Werror=return-type
6385     check_cflags -Werror=vla
6386     check_cflags -Wformat
6387     check_cflags -fdiagnostics-color=auto
6388     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6389 elif enabled llvm_gcc; then
6390     check_cflags -mllvm -stack-alignment=16
6391 elif enabled clang; then
6392     check_cflags -mllvm -stack-alignment=16
6393     check_cflags -mstack-alignment=16
6394     check_cflags -Qunused-arguments
6395     check_cflags -Werror=implicit-function-declaration
6396     check_cflags -Werror=missing-prototypes
6397     check_cflags -Werror=return-type
6398 elif enabled cparser; then
6399     add_cflags -Wno-missing-variable-declarations
6400     add_cflags -Wno-empty-statement
6401 elif enabled armcc; then
6402     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6403     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6404     # 2523: use of inline assembly is deprecated
6405     add_cflags -W${armcc_opt},--diag_suppress=2523
6406     add_cflags -W${armcc_opt},--diag_suppress=1207
6407     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6408     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6409     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6410     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6411 elif enabled pathscale; then
6412     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6413     disable inline_asm
6414 elif enabled_any msvc icl; then
6415     enabled x86_32 && disable aligned_stack
6416     enabled_all x86_32 debug && add_cflags -Oy-
6417     enabled debug && add_ldflags -debug
6418     enable pragma_deprecated
6419     if enabled icl; then
6420         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6421         # (correctly) on icl 13.x.
6422         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6423             add_cflags -Qansi-alias
6424         # Some inline asm is not compilable in debug
6425         if enabled debug; then
6426             disable ebp_available
6427             disable ebx_available
6428         fi
6429     fi
6430     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6431     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6432     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6433     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6434     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6435     # MSVC 2013 and newer can handle it fine.
6436     # If this declspec fails, force including stdlib.h before the restrict redefinition
6437     # happens in config.h.
6438     if [ $_restrict != restrict ]; then
6439         check_cc <<EOF || add_cflags -FIstdlib.h
6440 __declspec($_restrict) void* foo(int);
6441 EOF
6442     fi
6443     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6444     # Issue has been fixed in MSVC v19.00.24218.
6445     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6446         check_cflags -d2SSAOptimizer-
6447     # enable utf-8 source processing on VS2015 U2 and newer
6448     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6449         add_cflags -utf-8
6450 fi
6451
6452 for pfx in "" host_; do
6453     varname=${pfx%_}cc_type
6454     eval "type=\$$varname"
6455     if [ "$type" = "msvc" ]; then
6456         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6457 static inline int foo(int a) { return a; }
6458 EOF
6459     fi
6460 done
6461
6462 case $as_type in
6463     clang)
6464         add_asflags -Qunused-arguments
6465     ;;
6466 esac
6467
6468 case $ld_type in
6469     clang)
6470         check_ldflags -Qunused-arguments
6471     ;;
6472 esac
6473
6474 enable frame_thread_encoder
6475
6476 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6477
6478 check_deps $CONFIG_LIST       \
6479            $CONFIG_EXTRA      \
6480            $HAVE_LIST         \
6481            $ALL_COMPONENTS    \
6482
6483 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"
6484
6485
6486 if test $target_os = "haiku"; then
6487     disable memalign
6488     disable posix_memalign
6489 fi
6490
6491 flatten_extralibs(){
6492     unset nested_entries
6493     list_name=$1
6494     eval list=\$${1}
6495     for entry in $list; do
6496         entry_copy=$entry
6497         resolve entry_copy
6498         append nested_entries $(filter '*_extralibs' $entry_copy)
6499         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6500         eval $entry="\$flat_entries"
6501     done
6502     append $list_name "$nested_entries"
6503
6504     resolve nested_entries
6505     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6506         flatten_extralibs $list_name
6507     fi
6508 }
6509
6510 flatten_extralibs_wrapper(){
6511     list_name=$1
6512     flatten_extralibs $list_name
6513     unique $list_name
6514     resolve $list_name
6515     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6516     eval printf \''%s'\' \""\$$list_name"\"
6517 }
6518
6519 for linkunit in $LIBRARY_LIST; do
6520     unset current_extralibs
6521     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6522     for comp in ${components}; do
6523         enabled $comp || continue
6524         comp_extralibs="${comp}_extralibs"
6525         append current_extralibs $comp_extralibs
6526     done
6527     eval prepend ${linkunit}_extralibs $current_extralibs
6528 done
6529
6530 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6531     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6532 done
6533
6534 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6535
6536 for thread in $THREADS_LIST; do
6537     if enabled $thread; then
6538         test -n "$thread_type" &&
6539             die "ERROR: Only one thread type must be selected." ||
6540             thread_type="$thread"
6541     fi
6542 done
6543
6544 if disabled stdatomic; then
6545     if enabled atomics_gcc; then
6546         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6547     elif enabled atomics_win32; then
6548         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6549     elif enabled atomics_suncc; then
6550         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6551     elif enabled pthreads; then
6552         add_compat atomics/pthread/stdatomic.o
6553         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6554     else
6555         enabled threads && die "Threading is enabled, but no atomics are available"
6556         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6557     fi
6558 fi
6559
6560 # Check if requested libraries were found.
6561 for lib in $AUTODETECT_LIBS; do
6562     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6563 done
6564
6565 enabled zlib && add_cppflags -DZLIB_CONST
6566
6567 # conditional library dependencies, in linking order
6568 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6569 enabled afir_filter         && prepend avfilter_deps "avcodec"
6570 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6571 enabled aresample_filter    && prepend avfilter_deps "swresample"
6572 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6573 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6574 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6575 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6576 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6577 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6578 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6579 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6580 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6581 enabled pan_filter          && prepend avfilter_deps "swresample"
6582 enabled pp_filter           && prepend avfilter_deps "postproc"
6583 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6584 enabled resample_filter && prepend avfilter_deps "avresample"
6585 enabled sab_filter          && prepend avfilter_deps "swscale"
6586 enabled scale_filter    && prepend avfilter_deps "swscale"
6587 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6588 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6589 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6590 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6591 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6592 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6593 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6594 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6595 enabled spp_filter          && prepend avfilter_deps "avcodec"
6596 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6597 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6598 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6599
6600 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6601
6602 #FIXME
6603 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6604
6605 enabled opus_decoder    && prepend avcodec_deps "swresample"
6606
6607 expand_deps(){
6608     lib_deps=${1}_deps
6609     eval "deps=\$$lib_deps"
6610     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6611     unique $lib_deps
6612 }
6613
6614 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6615 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6616
6617 map 'expand_deps $v' $LIBRARY_LIST
6618
6619 license="LGPL version 2.1 or later"
6620 if enabled nonfree; then
6621     license="nonfree and unredistributable"
6622 elif enabled gplv3; then
6623     license="GPL version 3 or later"
6624 elif enabled lgplv3; then
6625     license="LGPL version 3 or later"
6626 elif enabled gpl; then
6627     license="GPL version 2 or later"
6628 fi
6629
6630 if test "$quiet" != "yes"; then
6631
6632 echo "install prefix            $prefix"
6633 echo "source path               $source_path"
6634 echo "C compiler                $cc"
6635 echo "C library                 $libc_type"
6636 if test "$host_cc" != "$cc"; then
6637     echo "host C compiler           $host_cc"
6638     echo "host C library            $host_libc_type"
6639 fi
6640 echo "ARCH                      $arch ($cpu)"
6641 if test "$build_suffix" != ""; then
6642     echo "build suffix              $build_suffix"
6643 fi
6644 if test "$progs_suffix" != ""; then
6645     echo "progs suffix              $progs_suffix"
6646 fi
6647 if test "$extra_version" != ""; then
6648     echo "version string suffix     $extra_version"
6649 fi
6650 echo "big-endian                ${bigendian-no}"
6651 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6652 if enabled x86; then
6653     echo "standalone assembly       ${x86asm-no}"
6654     echo "x86 assembler             ${x86asmexe}"
6655     echo "MMX enabled               ${mmx-no}"
6656     echo "MMXEXT enabled            ${mmxext-no}"
6657     echo "3DNow! enabled            ${amd3dnow-no}"
6658     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6659     echo "SSE enabled               ${sse-no}"
6660     echo "SSSE3 enabled             ${ssse3-no}"
6661     echo "AESNI enabled             ${aesni-no}"
6662     echo "AVX enabled               ${avx-no}"
6663     echo "AVX2 enabled              ${avx2-no}"
6664     echo "XOP enabled               ${xop-no}"
6665     echo "FMA3 enabled              ${fma3-no}"
6666     echo "FMA4 enabled              ${fma4-no}"
6667     echo "i686 features enabled     ${i686-no}"
6668     echo "CMOV is fast              ${fast_cmov-no}"
6669     echo "EBX available             ${ebx_available-no}"
6670     echo "EBP available             ${ebp_available-no}"
6671 fi
6672 if enabled aarch64; then
6673     echo "NEON enabled              ${neon-no}"
6674     echo "VFP enabled               ${vfp-no}"
6675 fi
6676 if enabled arm; then
6677     echo "ARMv5TE enabled           ${armv5te-no}"
6678     echo "ARMv6 enabled             ${armv6-no}"
6679     echo "ARMv6T2 enabled           ${armv6t2-no}"
6680     echo "VFP enabled               ${vfp-no}"
6681     echo "NEON enabled              ${neon-no}"
6682     echo "THUMB enabled             ${thumb-no}"
6683 fi
6684 if enabled mips; then
6685     echo "MIPS FPU enabled          ${mipsfpu-no}"
6686     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6687     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6688     echo "MIPS MSA enabled          ${msa-no}"
6689     echo "LOONGSON MMI enabled      ${mmi-no}"
6690 fi
6691 if enabled ppc; then
6692     echo "AltiVec enabled           ${altivec-no}"
6693     echo "VSX enabled               ${vsx-no}"
6694     echo "POWER8 enabled            ${power8-no}"
6695     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6696     echo "dcbzl available           ${dcbzl-no}"
6697 fi
6698 echo "debug symbols             ${debug-no}"
6699 echo "strip symbols             ${stripping-no}"
6700 echo "optimize for size         ${small-no}"
6701 echo "optimizations             ${optimizations-no}"
6702 echo "static                    ${static-no}"
6703 echo "shared                    ${shared-no}"
6704 echo "postprocessing support    ${postproc-no}"
6705 echo "network support           ${network-no}"
6706 echo "threading support         ${thread_type-no}"
6707 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6708 echo "texi2html enabled         ${texi2html-no}"
6709 echo "perl enabled              ${perl-no}"
6710 echo "pod2man enabled           ${pod2man-no}"
6711 echo "makeinfo enabled          ${makeinfo-no}"
6712 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6713 test -n "$random_seed" &&
6714     echo "random seed               ${random_seed}"
6715 echo
6716
6717 echo "External libraries:"
6718 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6719 echo
6720
6721 echo "External libraries providing hardware acceleration:"
6722 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6723 echo
6724
6725 echo "Libraries:"
6726 print_enabled '' $LIBRARY_LIST | print_in_columns
6727 echo
6728
6729 echo "Programs:"
6730 print_enabled '' $PROGRAM_LIST | print_in_columns
6731 echo
6732
6733 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6734     echo "Enabled ${type}s:"
6735     eval list=\$$(toupper $type)_LIST
6736     print_enabled '_*' $list | print_in_columns
6737     echo
6738 done
6739
6740 if test -n "$ignore_tests"; then
6741     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6742     echo "Ignored FATE tests:"
6743     echo $ignore_tests | print_in_columns
6744     echo
6745 fi
6746
6747 echo "License: $license"
6748
6749 fi # test "$quiet" != "yes"
6750
6751 if test -n "$WARNINGS"; then
6752     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6753     enabled fatal_warnings && exit 1
6754 fi
6755
6756 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6757
6758 esc(){
6759     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6760 }
6761
6762 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6763
6764 enabled stripping || strip="echo skipping strip"
6765 enabled stripping || striptype=""
6766
6767 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6768
6769 cat > ffbuild/config.mak <<EOF
6770 # Automatically generated by configure - do not modify!
6771 ifndef FFMPEG_CONFIG_MAK
6772 FFMPEG_CONFIG_MAK=1
6773 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6774 prefix=$prefix
6775 LIBDIR=\$(DESTDIR)$libdir
6776 SHLIBDIR=\$(DESTDIR)$shlibdir
6777 INCDIR=\$(DESTDIR)$incdir
6778 BINDIR=\$(DESTDIR)$bindir
6779 DATADIR=\$(DESTDIR)$datadir
6780 DOCDIR=\$(DESTDIR)$docdir
6781 MANDIR=\$(DESTDIR)$mandir
6782 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6783 INSTALL_NAME_DIR=$install_name_dir
6784 SRC_PATH=$source_path
6785 SRC_LINK=$source_link
6786 ifndef MAIN_MAKEFILE
6787 SRC_PATH:=\$(SRC_PATH:.%=..%)
6788 endif
6789 CC_IDENT=$cc_ident
6790 ARCH=$arch
6791 INTRINSICS=$intrinsics
6792 EXTERN_PREFIX=$extern_prefix
6793 CC=$cc
6794 CXX=$cxx
6795 AS=$as
6796 OBJCC=$objcc
6797 LD=$ld
6798 DEPCC=$dep_cc
6799 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6800 DEPAS=$as
6801 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6802 X86ASM=$x86asmexe
6803 DEPX86ASM=$x86asmexe
6804 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6805 AR=$ar
6806 ARFLAGS=$arflags
6807 AR_O=$ar_o
6808 AR_CMD=$ar
6809 NM_CMD=$nm
6810 RANLIB=$ranlib
6811 STRIP=$strip
6812 STRIPTYPE=$striptype
6813 NVCC=$nvcc
6814 CP=cp -p
6815 LN_S=$ln_s
6816 CPPFLAGS=$CPPFLAGS
6817 CFLAGS=$CFLAGS
6818 CXXFLAGS=$CXXFLAGS
6819 OBJCFLAGS=$OBJCFLAGS
6820 ASFLAGS=$ASFLAGS
6821 NVCCFLAGS=$nvccflags
6822 AS_C=$AS_C
6823 AS_O=$AS_O
6824 OBJCC_C=$OBJCC_C
6825 OBJCC_E=$OBJCC_E
6826 OBJCC_O=$OBJCC_O
6827 CC_C=$CC_C
6828 CC_E=$CC_E
6829 CC_O=$CC_O
6830 CXX_C=$CXX_C
6831 CXX_O=$CXX_O
6832 NVCC_C=$NVCC_C
6833 NVCC_O=$NVCC_O
6834 LD_O=$LD_O
6835 X86ASM_O=$X86ASM_O
6836 LD_LIB=$LD_LIB
6837 LD_PATH=$LD_PATH
6838 WINDRES=$windres
6839 DEPWINDRES=$dep_cc
6840 DOXYGEN=$doxygen
6841 LDFLAGS=$LDFLAGS
6842 LDEXEFLAGS=$LDEXEFLAGS
6843 LDSOFLAGS=$LDSOFLAGS
6844 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6845 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6846 X86ASMFLAGS=$X86ASMFLAGS
6847 BUILDSUF=$build_suffix
6848 PROGSSUF=$progs_suffix
6849 FULLNAME=$FULLNAME
6850 LIBPREF=$LIBPREF
6851 LIBSUF=$LIBSUF
6852 LIBNAME=$LIBNAME
6853 SLIBPREF=$SLIBPREF
6854 SLIBSUF=$SLIBSUF
6855 EXESUF=$EXESUF
6856 EXTRA_VERSION=$extra_version
6857 CCDEP=$CCDEP
6858 CXXDEP=$CXXDEP
6859 CCDEP_FLAGS=$CCDEP_FLAGS
6860 ASDEP=$ASDEP
6861 ASDEP_FLAGS=$ASDEP_FLAGS
6862 X86ASMDEP=$X86ASMDEP
6863 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6864 CC_DEPFLAGS=$CC_DEPFLAGS
6865 AS_DEPFLAGS=$AS_DEPFLAGS
6866 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6867 HOSTCC=$host_cc
6868 HOSTLD=$host_ld
6869 HOSTCFLAGS=$host_cflags
6870 HOSTCPPFLAGS=$host_cppflags
6871 HOSTEXESUF=$HOSTEXESUF
6872 HOSTLDFLAGS=$host_ldflags
6873 HOSTEXTRALIBS=$host_extralibs
6874 DEPHOSTCC=$host_cc
6875 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6876 HOSTCCDEP=$HOSTCCDEP
6877 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6878 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6879 HOSTCC_C=$HOSTCC_C
6880 HOSTCC_O=$HOSTCC_O
6881 HOSTLD_O=$HOSTLD_O
6882 TARGET_EXEC=$target_exec $target_exec_args
6883 TARGET_PATH=$target_path
6884 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6885 CFLAGS-ffplay=${sdl2_cflags}
6886 CFLAGS_HEADERS=$CFLAGS_HEADERS
6887 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6888 EXTRALIBS=$extralibs
6889 COMPAT_OBJS=$compat_objs
6890 INSTALL=$install
6891 SLIBNAME=${SLIBNAME}
6892 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6893 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6894 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6895 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6896 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6897 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6898 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6899 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6900 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6901 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6902 NOREDZONE_FLAGS=$noredzone_flags
6903 LIBFUZZER_PATH=$libfuzzer_path
6904 IGNORE_TESTS=$ignore_tests
6905 EOF
6906
6907 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6908
6909 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6910     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6911 done
6912
6913 cat > $TMPH <<EOF
6914 /* Automatically generated by configure - do not modify! */
6915 #ifndef FFMPEG_CONFIG_H
6916 #define FFMPEG_CONFIG_H
6917 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6918 #define FFMPEG_LICENSE "$(c_escape $license)"
6919 #define CONFIG_THIS_YEAR 2017
6920 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6921 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6922 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6923 #define av_restrict $_restrict
6924 #define EXTERN_PREFIX "${extern_prefix}"
6925 #define EXTERN_ASM ${extern_prefix}
6926 #define BUILDSUF "$build_suffix"
6927 #define SLIBSUF "$SLIBSUF"
6928 #define HAVE_MMX2 HAVE_MMXEXT
6929 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6930 EOF
6931
6932 test -n "$assert_level" &&
6933     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6934
6935 test -n "$malloc_prefix" &&
6936     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6937
6938 if enabled x86asm; then
6939     append config_files $TMPASM
6940     cat > $TMPASM <<EOF
6941 ; Automatically generated by configure - do not modify!
6942 EOF
6943 fi
6944
6945 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6946
6947
6948 mkdir -p doc
6949 mkdir -p tests
6950 mkdir -p tests/api
6951 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6952
6953 print_config ARCH_   "$config_files" $ARCH_LIST
6954 print_config HAVE_   "$config_files" $HAVE_LIST
6955 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6956                                      $CONFIG_EXTRA      \
6957                                      $ALL_COMPONENTS    \
6958
6959 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6960 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6961
6962 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6963 cp_if_changed $TMPH config.h
6964 touch ffbuild/.config
6965
6966 enabled x86asm && cp_if_changed $TMPASM config.asm
6967
6968 cat > $TMPH <<EOF
6969 /* Generated by ffmpeg configure */
6970 #ifndef AVUTIL_AVCONFIG_H
6971 #define AVUTIL_AVCONFIG_H
6972 EOF
6973
6974 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6975
6976 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6977
6978 cp_if_changed $TMPH libavutil/avconfig.h
6979
6980 # generate the lists of enabled components
6981 print_enabled_components(){
6982     file=$1
6983     struct_name=$2
6984     name=$3
6985     shift 3
6986     echo "static const $struct_name * const $name[] = {" > $TMPH
6987     for c in $*; do
6988         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6989     done
6990     echo "    NULL };" >> $TMPH
6991     cp_if_changed $TMPH $file
6992 }
6993
6994 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6995 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6996
6997 # Settings for pkg-config files
6998
6999 cat > $TMPH <<EOF
7000 # Automatically generated by configure - do not modify!
7001 shared=$shared
7002 build_suffix=$build_suffix
7003 prefix=$prefix
7004 libdir=$libdir
7005 incdir=$incdir
7006 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7007 source_path=${source_path}
7008 LIBPREF=${LIBPREF}
7009 LIBSUF=${LIBSUF}
7010 extralibs_avutil="$avutil_extralibs"
7011 extralibs_avcodec="$avcodec_extralibs"
7012 extralibs_avformat="$avformat_extralibs"
7013 extralibs_avdevice="$avdevice_extralibs"
7014 extralibs_avfilter="$avfilter_extralibs"
7015 extralibs_avresample="$avresample_extralibs"
7016 extralibs_postproc="$postproc_extralibs"
7017 extralibs_swscale="$swscale_extralibs"
7018 extralibs_swresample="$swresample_extralibs"
7019 EOF
7020
7021 for lib in $LIBRARY_LIST; do
7022     lib_deps="$(eval echo \$${lib}_deps)"
7023     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7024 done
7025
7026 cp_if_changed $TMPH ffbuild/config.sh