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_select="zlib"
2441 apng_encoder_select="llvidencdsp zlib"
2442 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2443 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2444 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2445 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2446 atrac1_decoder_select="mdct sinewin"
2447 atrac3_decoder_select="mdct"
2448 atrac3p_decoder_select="mdct sinewin"
2449 avrn_decoder_select="exif jpegtables"
2450 bink_decoder_select="blockdsp hpeldsp"
2451 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2452 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2453 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2454 clearvideo_decoder_select="idctdsp"
2455 cllc_decoder_select="bswapdsp"
2456 comfortnoise_encoder_select="lpc"
2457 cook_decoder_select="audiodsp mdct sinewin"
2458 cscd_decoder_select="lzo"
2459 cscd_decoder_suggest="zlib"
2460 dca_decoder_select="mdct"
2461 dds_decoder_select="texturedsp"
2462 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2463 dnxhd_decoder_select="blockdsp idctdsp"
2464 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2465 dolby_e_decoder_select="mdct"
2466 dvvideo_decoder_select="dvprofile idctdsp"
2467 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2468 dxa_decoder_select="zlib"
2469 dxv_decoder_select="lzf texturedsp"
2470 eac3_decoder_select="ac3_decoder"
2471 eac3_encoder_select="ac3_encoder"
2472 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2473 eatgq_decoder_select="aandcttables"
2474 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2475 exr_decoder_select="zlib"
2476 ffv1_decoder_select="rangecoder"
2477 ffv1_encoder_select="rangecoder"
2478 ffvhuff_decoder_select="huffyuv_decoder"
2479 ffvhuff_encoder_select="huffyuv_encoder"
2480 fic_decoder_select="golomb"
2481 flac_decoder_select="flacdsp"
2482 flac_encoder_select="bswapdsp flacdsp lpc"
2483 flashsv2_decoder_select="zlib"
2484 flashsv2_encoder_select="zlib"
2485 flashsv_decoder_select="zlib"
2486 flashsv_encoder_select="zlib"
2487 flv_decoder_select="h263_decoder"
2488 flv_encoder_select="h263_encoder"
2489 fourxm_decoder_select="blockdsp bswapdsp"
2490 fraps_decoder_select="bswapdsp huffman"
2491 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2492 g729_decoder_select="audiodsp"
2493 h261_decoder_select="mpegvideo"
2494 h261_encoder_select="aandcttables mpegvideoenc"
2495 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2496 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2497 h263i_decoder_select="h263_decoder"
2498 h263p_decoder_select="h263_decoder"
2499 h263p_encoder_select="h263_encoder"
2500 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2501 h264_decoder_suggest="error_resilience"
2502 hap_decoder_select="snappy texturedsp"
2503 hap_encoder_deps="libsnappy"
2504 hap_encoder_select="texturedspenc"
2505 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2506 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2507 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2508 iac_decoder_select="imc_decoder"
2509 imc_decoder_select="bswapdsp fft mdct sinewin"
2510 indeo3_decoder_select="hpeldsp"
2511 indeo4_decoder_select="ividsp"
2512 indeo5_decoder_select="ividsp"
2513 interplay_video_decoder_select="hpeldsp"
2514 jpegls_decoder_select="mjpeg_decoder"
2515 jv_decoder_select="blockdsp"
2516 lagarith_decoder_select="llviddsp"
2517 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2518 magicyuv_decoder_select="llviddsp"
2519 magicyuv_encoder_select="llvidencdsp"
2520 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2521 metasound_decoder_select="lsp mdct sinewin"
2522 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2523 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2524 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2525 mjpegb_decoder_select="mjpeg_decoder"
2526 mlp_decoder_select="mlp_parser"
2527 mlp_encoder_select="lpc"
2528 motionpixels_decoder_select="bswapdsp"
2529 mp1_decoder_select="mpegaudio"
2530 mp1float_decoder_select="mpegaudio"
2531 mp2_decoder_select="mpegaudio"
2532 mp2float_decoder_select="mpegaudio"
2533 mp3_decoder_select="mpegaudio"
2534 mp3adu_decoder_select="mpegaudio"
2535 mp3adufloat_decoder_select="mpegaudio"
2536 mp3float_decoder_select="mpegaudio"
2537 mp3on4_decoder_select="mpegaudio"
2538 mp3on4float_decoder_select="mpegaudio"
2539 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2540 mpc8_decoder_select="mpegaudiodsp"
2541 mpegvideo_decoder_select="mpegvideo"
2542 mpeg1video_decoder_select="mpegvideo"
2543 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2544 mpeg2video_decoder_select="mpegvideo"
2545 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2546 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2547 mpeg4_encoder_select="h263_encoder"
2548 msa1_decoder_select="mss34dsp"
2549 mscc_decoder_select="zlib"
2550 msmpeg4v1_decoder_select="h263_decoder"
2551 msmpeg4v2_decoder_select="h263_decoder"
2552 msmpeg4v2_encoder_select="h263_encoder"
2553 msmpeg4v3_decoder_select="h263_decoder"
2554 msmpeg4v3_encoder_select="h263_encoder"
2555 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2556 mts2_decoder_select="mss34dsp"
2557 mxpeg_decoder_select="mjpeg_decoder"
2558 nellymoser_decoder_select="mdct sinewin"
2559 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2560 nuv_decoder_select="idctdsp lzo"
2561 on2avc_decoder_select="mdct"
2562 opus_decoder_deps="swresample"
2563 opus_decoder_select="mdct15"
2564 opus_encoder_select="audio_frame_queue mdct15"
2565 png_decoder_select="zlib"
2566 png_encoder_select="llvidencdsp zlib"
2567 prores_decoder_select="blockdsp idctdsp"
2568 prores_encoder_select="fdctdsp"
2569 qcelp_decoder_select="lsp"
2570 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2571 ra_144_decoder_select="audiodsp"
2572 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2573 ralf_decoder_select="golomb"
2574 rawvideo_decoder_select="bswapdsp"
2575 rscc_decoder_select="zlib"
2576 rtjpeg_decoder_select="me_cmp"
2577 rv10_decoder_select="h263_decoder"
2578 rv10_encoder_select="h263_encoder"
2579 rv20_decoder_select="h263_decoder"
2580 rv20_encoder_select="h263_encoder"
2581 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2582 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2583 screenpresso_decoder_select="zlib"
2584 shorten_decoder_select="bswapdsp"
2585 sipr_decoder_select="lsp"
2586 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2587 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2588 sonic_decoder_select="golomb rangecoder"
2589 sonic_encoder_select="golomb rangecoder"
2590 sonic_ls_encoder_select="golomb rangecoder"
2591 sp5x_decoder_select="mjpeg_decoder"
2592 srgc_decoder_select="zlib"
2593 svq1_decoder_select="hpeldsp"
2594 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2595 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2596 svq3_decoder_suggest="zlib"
2597 tak_decoder_select="audiodsp"
2598 tdsc_decoder_select="zlib mjpeg_decoder"
2599 theora_decoder_select="vp3_decoder"
2600 thp_decoder_select="mjpeg_decoder"
2601 tiff_decoder_suggest="zlib lzma"
2602 tiff_encoder_suggest="zlib"
2603 truehd_decoder_select="mlp_parser"
2604 truehd_encoder_select="lpc"
2605 truemotion2_decoder_select="bswapdsp"
2606 truespeech_decoder_select="bswapdsp"
2607 tscc_decoder_select="zlib"
2608 twinvq_decoder_select="mdct lsp sinewin"
2609 txd_decoder_select="texturedsp"
2610 utvideo_decoder_select="bswapdsp llviddsp"
2611 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2612 vble_decoder_select="llviddsp"
2613 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2614 vc1image_decoder_select="vc1_decoder"
2615 vorbis_decoder_select="mdct"
2616 vorbis_encoder_select="mdct"
2617 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2618 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2619 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2620 vp6a_decoder_select="vp6_decoder"
2621 vp6f_decoder_select="vp6_decoder"
2622 vp7_decoder_select="h264pred videodsp vp8dsp"
2623 vp8_decoder_select="h264pred videodsp vp8dsp"
2624 vp9_decoder_select="videodsp vp9_parser"
2625 webp_decoder_select="vp8_decoder exif"
2626 wmalossless_decoder_select="llauddsp"
2627 wmapro_decoder_select="mdct sinewin wma_freqs"
2628 wmav1_decoder_select="mdct sinewin wma_freqs"
2629 wmav1_encoder_select="mdct sinewin wma_freqs"
2630 wmav2_decoder_select="mdct sinewin wma_freqs"
2631 wmav2_encoder_select="mdct sinewin wma_freqs"
2632 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2633 wmv1_decoder_select="h263_decoder"
2634 wmv1_encoder_select="h263_encoder"
2635 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2636 wmv2_encoder_select="h263_encoder wmv2dsp"
2637 wmv3_decoder_select="vc1_decoder"
2638 wmv3image_decoder_select="wmv3_decoder"
2639 xma1_decoder_select="wmapro_decoder"
2640 xma2_decoder_select="wmapro_decoder"
2641 zerocodec_decoder_select="zlib"
2642 zlib_decoder_select="zlib"
2643 zlib_encoder_select="zlib"
2644 zmbv_decoder_select="zlib"
2645 zmbv_encoder_select="zlib"
2646
2647 # hardware accelerators
2648 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2649 cuda_deps_any="libdl LoadLibrary"
2650 cuvid_deps="cuda"
2651 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2652 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2653 nvdec_deps="cuda"
2654 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2655 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2656 xvmc_deps="X11_extensions_XvMClib_h"
2657
2658 h263_vaapi_hwaccel_deps="vaapi"
2659 h263_vaapi_hwaccel_select="h263_decoder"
2660 h263_videotoolbox_hwaccel_deps="videotoolbox"
2661 h263_videotoolbox_hwaccel_select="h263_decoder"
2662 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2663 h264_d3d11va_hwaccel_deps="d3d11va"
2664 h264_d3d11va_hwaccel_select="h264_decoder"
2665 h264_d3d11va2_hwaccel_deps="d3d11va"
2666 h264_d3d11va2_hwaccel_select="h264_decoder"
2667 h264_dxva2_hwaccel_deps="dxva2"
2668 h264_dxva2_hwaccel_select="h264_decoder"
2669 h264_mediacodec_hwaccel_deps="mediacodec"
2670 h264_mmal_hwaccel_deps="mmal"
2671 h264_nvdec_hwaccel_deps="nvdec"
2672 h264_nvdec_hwaccel_select="h264_decoder"
2673 h264_qsv_hwaccel_deps="libmfx"
2674 h264_vaapi_hwaccel_deps="vaapi"
2675 h264_vaapi_hwaccel_select="h264_decoder"
2676 h264_vdpau_hwaccel_deps="vdpau"
2677 h264_vdpau_hwaccel_select="h264_decoder"
2678 h264_videotoolbox_hwaccel_deps="videotoolbox"
2679 h264_videotoolbox_hwaccel_select="h264_decoder"
2680 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2681 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2682 hevc_d3d11va_hwaccel_select="hevc_decoder"
2683 hevc_mediacodec_hwaccel_deps="mediacodec"
2684 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2685 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2686 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2687 hevc_dxva2_hwaccel_select="hevc_decoder"
2688 hevc_nvdec_hwaccel_deps="nvdec"
2689 hevc_nvdec_hwaccel_select="hevc_decoder"
2690 hevc_qsv_hwaccel_deps="libmfx"
2691 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2692 hevc_vaapi_hwaccel_select="hevc_decoder"
2693 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2694 hevc_vdpau_hwaccel_select="hevc_decoder"
2695 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2696 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2697 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2698 mpeg_xvmc_hwaccel_deps="xvmc"
2699 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2700 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2701 mpeg1_vdpau_hwaccel_deps="vdpau"
2702 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2703 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2704 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2705 mpeg1_xvmc_hwaccel_deps="xvmc"
2706 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2707 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2708 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2709 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2710 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2711 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2712 mpeg2_dxva2_hwaccel_deps="dxva2"
2713 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2714 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2715 mpeg2_mmal_hwaccel_deps="mmal"
2716 mpeg2_qsv_hwaccel_deps="libmfx"
2717 mpeg2_vaapi_hwaccel_deps="vaapi"
2718 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2719 mpeg2_vdpau_hwaccel_deps="vdpau"
2720 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2721 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2722 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_xvmc_hwaccel_deps="xvmc"
2724 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2725 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2726 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2727 mpeg4_mmal_hwaccel_deps="mmal"
2728 mpeg4_vaapi_hwaccel_deps="vaapi"
2729 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2730 mpeg4_vdpau_hwaccel_deps="vdpau"
2731 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2732 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2733 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2734 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2735 vc1_d3d11va_hwaccel_deps="d3d11va"
2736 vc1_d3d11va_hwaccel_select="vc1_decoder"
2737 vc1_d3d11va2_hwaccel_deps="d3d11va"
2738 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2739 vc1_dxva2_hwaccel_deps="dxva2"
2740 vc1_dxva2_hwaccel_select="vc1_decoder"
2741 vc1_mmal_hwaccel_deps="mmal"
2742 vc1_nvdec_hwaccel_deps="nvdec"
2743 vc1_nvdec_hwaccel_select="vc1_decoder"
2744 vc1_qsv_hwaccel_deps="libmfx"
2745 vc1_vaapi_hwaccel_deps="vaapi"
2746 vc1_vaapi_hwaccel_select="vc1_decoder"
2747 vc1_vdpau_hwaccel_deps="vdpau"
2748 vc1_vdpau_hwaccel_select="vc1_decoder"
2749 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2750 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2751 vp8_mediacodec_hwaccel_deps="mediacodec"
2752 vp8_qsv_hwaccel_deps="libmfx"
2753 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2754 vp9_d3d11va_hwaccel_select="vp9_decoder"
2755 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2756 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2757 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2758 vp9_dxva2_hwaccel_select="vp9_decoder"
2759 vp9_mediacodec_hwaccel_deps="mediacodec"
2760 vp9_nvdec_hwaccel_deps="nvdec"
2761 vp9_nvdec_hwaccel_select="vp9_decoder"
2762 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2763 vp9_vaapi_hwaccel_select="vp9_decoder"
2764 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2765 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2766 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2767 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2768 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2769 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2770
2771 # hardware-accelerated codecs
2772 omx_deps="libdl pthreads"
2773 omx_rpi_select="omx"
2774 qsv_deps="libmfx"
2775 qsvdec_select="qsv"
2776 qsvenc_select="qsv"
2777 qsvvpp_select="qsv"
2778 vaapi_encode_deps="vaapi"
2779 v4l2_m2m_deps_any="linux_videodev2_h"
2780
2781 hwupload_cuda_filter_deps="cuda"
2782 scale_npp_filter_deps="cuda libnpp"
2783 scale_cuda_filter_deps="cuda_sdk"
2784 thumbnail_cuda_filter_deps="cuda_sdk"
2785
2786 nvenc_deps="cuda"
2787 nvenc_deps_any="libdl LoadLibrary"
2788 nvenc_encoder_deps="nvenc"
2789
2790 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2791 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2792 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2793 h264_cuvid_decoder_deps="cuvid"
2794 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2795 h264_mediacodec_decoder_deps="mediacodec"
2796 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2797 h264_mmal_decoder_deps="mmal"
2798 h264_nvenc_encoder_deps="nvenc"
2799 h264_omx_encoder_deps="omx"
2800 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2801 h264_qsv_encoder_select="qsvenc"
2802 h264_rkmpp_decoder_deps="rkmpp"
2803 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2804 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2805 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2806 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2807 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2808 hevc_cuvid_decoder_deps="cuvid"
2809 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2810 hevc_mediacodec_decoder_deps="mediacodec"
2811 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2812 hevc_nvenc_encoder_deps="nvenc"
2813 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2814 hevc_qsv_encoder_select="hevcparse qsvenc"
2815 hevc_rkmpp_decoder_deps="rkmpp"
2816 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2817 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2818 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2819 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2820 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2821 mjpeg_cuvid_decoder_deps="cuvid"
2822 mjpeg_qsv_encoder_deps="libmfx"
2823 mjpeg_qsv_encoder_select="qsvenc"
2824 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2825 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2826 mpeg1_cuvid_decoder_deps="cuvid"
2827 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2828 mpeg2_crystalhd_decoder_select="crystalhd"
2829 mpeg2_cuvid_decoder_deps="cuvid"
2830 mpeg2_mmal_decoder_deps="mmal"
2831 mpeg2_mediacodec_decoder_deps="mediacodec"
2832 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2833 mpeg2_qsv_encoder_select="qsvenc"
2834 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2835 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2836 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2837 mpeg4_crystalhd_decoder_select="crystalhd"
2838 mpeg4_cuvid_decoder_deps="cuvid"
2839 mpeg4_mediacodec_decoder_deps="mediacodec"
2840 mpeg4_mmal_decoder_deps="mmal"
2841 mpeg4_omx_encoder_deps="omx"
2842 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2843 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2844 msmpeg4_crystalhd_decoder_select="crystalhd"
2845 nvenc_h264_encoder_select="h264_nvenc_encoder"
2846 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2847 vc1_crystalhd_decoder_select="crystalhd"
2848 vc1_cuvid_decoder_deps="cuvid"
2849 vc1_mmal_decoder_deps="mmal"
2850 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2851 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2852 vp8_cuvid_decoder_deps="cuvid"
2853 vp8_mediacodec_decoder_deps="mediacodec"
2854 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2855 vp8_rkmpp_decoder_deps="rkmpp"
2856 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2857 vp8_vaapi_encoder_select="vaapi_encode"
2858 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2859 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2860 vp9_cuvid_decoder_deps="cuvid"
2861 vp9_mediacodec_decoder_deps="mediacodec"
2862 vp9_rkmpp_decoder_deps="rkmpp"
2863 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2864 vp9_vaapi_encoder_select="vaapi_encode"
2865 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2866 wmv3_crystalhd_decoder_select="crystalhd"
2867
2868 # parsers
2869 aac_parser_select="adts_header"
2870 h264_parser_select="golomb h264dsp h264parse"
2871 hevc_parser_select="hevcparse"
2872 mpegaudio_parser_select="mpegaudioheader"
2873 mpegvideo_parser_select="mpegvideo"
2874 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2875 vc1_parser_select="vc1dsp"
2876
2877 # bitstream_filters
2878 aac_adtstoasc_bsf_select="adts_header"
2879 h264_metadata_bsf_select="cbs_h264"
2880 h264_redundant_pps_bsf_select="cbs_h264"
2881 hevc_metadata_bsf_select="cbs_h265"
2882 mjpeg2jpeg_bsf_select="jpegtables"
2883 mpeg2_metadata_bsf_select="cbs_mpeg2"
2884 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2885
2886 # external libraries
2887 aac_at_decoder_deps="audiotoolbox"
2888 ac3_at_decoder_deps="audiotoolbox"
2889 ac3_at_decoder_select="ac3_parser"
2890 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2891 alac_at_decoder_deps="audiotoolbox"
2892 amr_nb_at_decoder_deps="audiotoolbox"
2893 avisynth_deps_any="libdl LoadLibrary"
2894 avisynth_demuxer_deps="avisynth"
2895 avisynth_demuxer_select="riffdec"
2896 eac3_at_decoder_deps="audiotoolbox"
2897 eac3_at_decoder_select="ac3_parser"
2898 gsm_ms_at_decoder_deps="audiotoolbox"
2899 ilbc_at_decoder_deps="audiotoolbox"
2900 mp1_at_decoder_deps="audiotoolbox"
2901 mp2_at_decoder_deps="audiotoolbox"
2902 mp3_at_decoder_deps="audiotoolbox"
2903 mp1_at_decoder_select="mpegaudioheader"
2904 mp2_at_decoder_select="mpegaudioheader"
2905 mp3_at_decoder_select="mpegaudioheader"
2906 pcm_alaw_at_decoder_deps="audiotoolbox"
2907 pcm_mulaw_at_decoder_deps="audiotoolbox"
2908 qdmc_at_decoder_deps="audiotoolbox"
2909 qdm2_at_decoder_deps="audiotoolbox"
2910 aac_at_encoder_deps="audiotoolbox"
2911 aac_at_encoder_select="audio_frame_queue"
2912 alac_at_encoder_deps="audiotoolbox"
2913 alac_at_encoder_select="audio_frame_queue"
2914 ilbc_at_encoder_deps="audiotoolbox"
2915 ilbc_at_encoder_select="audio_frame_queue"
2916 pcm_alaw_at_encoder_deps="audiotoolbox"
2917 pcm_alaw_at_encoder_select="audio_frame_queue"
2918 pcm_mulaw_at_encoder_deps="audiotoolbox"
2919 pcm_mulaw_at_encoder_select="audio_frame_queue"
2920 chromaprint_muxer_deps="chromaprint"
2921 h264_videotoolbox_encoder_deps="pthreads"
2922 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2923 hevc_videotoolbox_encoder_deps="pthreads"
2924 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2925 libcelt_decoder_deps="libcelt"
2926 libfdk_aac_decoder_deps="libfdk_aac"
2927 libfdk_aac_encoder_deps="libfdk_aac"
2928 libfdk_aac_encoder_select="audio_frame_queue"
2929 libgme_demuxer_deps="libgme"
2930 libgsm_decoder_deps="libgsm"
2931 libgsm_encoder_deps="libgsm"
2932 libgsm_ms_decoder_deps="libgsm"
2933 libgsm_ms_encoder_deps="libgsm"
2934 libilbc_decoder_deps="libilbc"
2935 libilbc_encoder_deps="libilbc"
2936 libkvazaar_encoder_deps="libkvazaar"
2937 libmodplug_demuxer_deps="libmodplug"
2938 libmp3lame_encoder_deps="libmp3lame"
2939 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2940 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2941 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2942 libopencore_amrnb_encoder_select="audio_frame_queue"
2943 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2944 libopenh264_decoder_deps="libopenh264"
2945 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2946 libopenh264_encoder_deps="libopenh264"
2947 libopenjpeg_decoder_deps="libopenjpeg"
2948 libopenjpeg_encoder_deps="libopenjpeg"
2949 libopenmpt_demuxer_deps="libopenmpt"
2950 libopus_decoder_deps="libopus"
2951 libopus_encoder_deps="libopus"
2952 libopus_encoder_select="audio_frame_queue"
2953 librsvg_decoder_deps="librsvg"
2954 libshine_encoder_deps="libshine"
2955 libshine_encoder_select="audio_frame_queue"
2956 libspeex_decoder_deps="libspeex"
2957 libspeex_encoder_deps="libspeex"
2958 libspeex_encoder_select="audio_frame_queue"
2959 libtheora_encoder_deps="libtheora"
2960 libtwolame_encoder_deps="libtwolame"
2961 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2962 libvorbis_decoder_deps="libvorbis"
2963 libvorbis_encoder_deps="libvorbis libvorbisenc"
2964 libvorbis_encoder_select="audio_frame_queue"
2965 libvpx_vp8_decoder_deps="libvpx"
2966 libvpx_vp8_encoder_deps="libvpx"
2967 libvpx_vp9_decoder_deps="libvpx"
2968 libvpx_vp9_encoder_deps="libvpx"
2969 libwavpack_encoder_deps="libwavpack"
2970 libwavpack_encoder_select="audio_frame_queue"
2971 libwebp_encoder_deps="libwebp"
2972 libwebp_anim_encoder_deps="libwebp"
2973 libx262_encoder_deps="libx262"
2974 libx264_encoder_deps="libx264"
2975 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2976 libx264rgb_encoder_select="libx264_encoder"
2977 libx265_encoder_deps="libx265"
2978 libxavs_encoder_deps="libxavs"
2979 libxvid_encoder_deps="libxvid"
2980 libzvbi_teletext_decoder_deps="libzvbi"
2981 videotoolbox_suggest="coreservices"
2982 videotoolbox_deps="corefoundation coremedia corevideo"
2983 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2984
2985 # demuxers / muxers
2986 ac3_demuxer_select="ac3_parser"
2987 aiff_muxer_select="iso_media"
2988 asf_demuxer_select="riffdec"
2989 asf_o_demuxer_select="riffdec"
2990 asf_muxer_select="riffenc"
2991 asf_stream_muxer_select="asf_muxer"
2992 avi_demuxer_select="iso_media riffdec exif"
2993 avi_muxer_select="riffenc"
2994 caf_demuxer_select="iso_media riffdec"
2995 caf_muxer_select="iso_media"
2996 dash_muxer_select="mp4_muxer"
2997 dash_demuxer_deps="libxml2"
2998 dirac_demuxer_select="dirac_parser"
2999 dts_demuxer_select="dca_parser"
3000 dtshd_demuxer_select="dca_parser"
3001 dv_demuxer_select="dvprofile"
3002 dv_muxer_select="dvprofile"
3003 dxa_demuxer_select="riffdec"
3004 eac3_demuxer_select="ac3_parser"
3005 f4v_muxer_select="mov_muxer"
3006 fifo_muxer_deps="threads"
3007 flac_demuxer_select="flac_parser"
3008 hds_muxer_select="flv_muxer"
3009 hls_muxer_select="mpegts_muxer"
3010 hls_muxer_suggest="gcrypt openssl"
3011 image2_alias_pix_demuxer_select="image2_demuxer"
3012 image2_brender_pix_demuxer_select="image2_demuxer"
3013 ipod_muxer_select="mov_muxer"
3014 ismv_muxer_select="mov_muxer"
3015 matroska_audio_muxer_select="matroska_muxer"
3016 matroska_demuxer_select="iso_media riffdec"
3017 matroska_demuxer_suggest="bzlib lzo zlib"
3018 matroska_muxer_select="iso_media riffenc"
3019 mmf_muxer_select="riffenc"
3020 mov_demuxer_select="iso_media riffdec"
3021 mov_demuxer_suggest="zlib"
3022 mov_muxer_select="iso_media riffenc rtpenc_chain"
3023 mp3_demuxer_select="mpegaudio_parser"
3024 mp3_muxer_select="mpegaudioheader"
3025 mp4_muxer_select="mov_muxer"
3026 mpegts_demuxer_select="iso_media"
3027 mpegts_muxer_select="adts_muxer latm_muxer"
3028 mpegtsraw_demuxer_select="mpegts_demuxer"
3029 mxf_d10_muxer_select="mxf_muxer"
3030 mxf_opatom_muxer_select="mxf_muxer"
3031 nut_muxer_select="riffenc"
3032 nuv_demuxer_select="riffdec"
3033 oga_muxer_select="ogg_muxer"
3034 ogg_demuxer_select="dirac_parse"
3035 ogv_muxer_select="ogg_muxer"
3036 opus_muxer_select="ogg_muxer"
3037 psp_muxer_select="mov_muxer"
3038 rtp_demuxer_select="sdp_demuxer"
3039 rtp_muxer_select="golomb"
3040 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3041 rtsp_demuxer_select="http_protocol rtpdec"
3042 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3043 sap_demuxer_select="sdp_demuxer"
3044 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3045 sdp_demuxer_select="rtpdec"
3046 smoothstreaming_muxer_select="ismv_muxer"
3047 spdif_demuxer_select="adts_header"
3048 spdif_muxer_select="adts_header"
3049 spx_muxer_select="ogg_muxer"
3050 swf_demuxer_suggest="zlib"
3051 tak_demuxer_select="tak_parser"
3052 tg2_muxer_select="mov_muxer"
3053 tgp_muxer_select="mov_muxer"
3054 vobsub_demuxer_select="mpegps_demuxer"
3055 w64_demuxer_select="wav_demuxer"
3056 w64_muxer_select="wav_muxer"
3057 wav_demuxer_select="riffdec"
3058 wav_muxer_select="riffenc"
3059 webm_muxer_select="iso_media riffenc"
3060 webm_dash_manifest_demuxer_select="matroska_demuxer"
3061 wtv_demuxer_select="mpegts_demuxer riffdec"
3062 wtv_muxer_select="mpegts_muxer riffenc"
3063 xmv_demuxer_select="riffdec"
3064 xwma_demuxer_select="riffdec"
3065
3066 # indevs / outdevs
3067 alsa_indev_deps="alsa"
3068 alsa_outdev_deps="alsa"
3069 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3070 avfoundation_indev_suggest="coregraphics applicationservices"
3071 avfoundation_indev_extralibs="-framework Foundation"
3072 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3073 caca_outdev_deps="libcaca"
3074 decklink_deps_any="libdl LoadLibrary"
3075 decklink_indev_deps="decklink threads"
3076 decklink_indev_extralibs="-lstdc++"
3077 decklink_outdev_deps="decklink threads"
3078 decklink_outdev_extralibs="-lstdc++"
3079 libndi_newtek_indev_deps="libndi_newtek"
3080 libndi_newtek_indev_extralibs="-lndi"
3081 libndi_newtek_outdev_deps="libndi_newtek"
3082 libndi_newtek_outdev_extralibs="-lndi"
3083 dshow_indev_deps="IBaseFilter"
3084 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3085 fbdev_indev_deps="linux_fb_h"
3086 fbdev_outdev_deps="linux_fb_h"
3087 gdigrab_indev_deps="CreateDIBSection"
3088 gdigrab_indev_extralibs="-lgdi32"
3089 gdigrab_indev_select="bmp_decoder"
3090 iec61883_indev_deps="libiec61883"
3091 jack_indev_deps="libjack"
3092 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3093 kmsgrab_indev_deps="libdrm"
3094 lavfi_indev_deps="avfilter"
3095 libcdio_indev_deps="libcdio"
3096 libdc1394_indev_deps="libdc1394"
3097 openal_indev_deps="openal"
3098 opengl_outdev_deps="opengl"
3099 oss_indev_deps_any="sys_soundcard_h"
3100 oss_outdev_deps_any="sys_soundcard_h"
3101 pulse_indev_deps="libpulse"
3102 pulse_outdev_deps="libpulse"
3103 sdl2_outdev_deps="sdl2"
3104 sndio_indev_deps="sndio"
3105 sndio_outdev_deps="sndio"
3106 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3107 v4l2_indev_suggest="libv4l2"
3108 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3109 v4l2_outdev_suggest="libv4l2"
3110 vfwcap_indev_deps="vfw32 vfwcap_defines"
3111 xcbgrab_indev_deps="libxcb"
3112 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3113 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3114 xv_outdev_extralibs="-lXv -lX11 -lXext"
3115
3116 # protocols
3117 async_protocol_deps="threads"
3118 bluray_protocol_deps="libbluray"
3119 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3120 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3121 ffrtmpcrypt_protocol_select="tcp_protocol"
3122 ffrtmphttp_protocol_conflict="librtmp_protocol"
3123 ffrtmphttp_protocol_select="http_protocol"
3124 ftp_protocol_select="tcp_protocol"
3125 gopher_protocol_select="network"
3126 http_protocol_select="tcp_protocol"
3127 http_protocol_suggest="zlib"
3128 httpproxy_protocol_select="tcp_protocol"
3129 httpproxy_protocol_suggest="zlib"
3130 https_protocol_select="tls_protocol"
3131 https_protocol_suggest="zlib"
3132 icecast_protocol_select="http_protocol"
3133 librtmp_protocol_deps="librtmp"
3134 librtmpe_protocol_deps="librtmp"
3135 librtmps_protocol_deps="librtmp"
3136 librtmpt_protocol_deps="librtmp"
3137 librtmpte_protocol_deps="librtmp"
3138 libsmbclient_protocol_deps="libsmbclient gplv3"
3139 libssh_protocol_deps="libssh"
3140 mmsh_protocol_select="http_protocol"
3141 mmst_protocol_select="network"
3142 rtmp_protocol_conflict="librtmp_protocol"
3143 rtmp_protocol_select="tcp_protocol"
3144 rtmp_protocol_suggest="zlib"
3145 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3146 rtmpe_protocol_suggest="zlib"
3147 rtmps_protocol_conflict="librtmp_protocol"
3148 rtmps_protocol_select="tls_protocol"
3149 rtmps_protocol_suggest="zlib"
3150 rtmpt_protocol_select="ffrtmphttp_protocol"
3151 rtmpt_protocol_suggest="zlib"
3152 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3153 rtmpte_protocol_suggest="zlib"
3154 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3155 rtmpts_protocol_suggest="zlib"
3156 rtp_protocol_select="udp_protocol"
3157 schannel_conflict="openssl gnutls"
3158 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3159 sctp_protocol_select="network"
3160 securetransport_conflict="openssl gnutls"
3161 srtp_protocol_select="rtp_protocol srtp"
3162 tcp_protocol_select="network"
3163 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3164 tls_protocol_select="tcp_protocol"
3165 udp_protocol_select="network"
3166 udplite_protocol_select="network"
3167 unix_protocol_deps="sys_un_h"
3168 unix_protocol_select="network"
3169
3170 # filters
3171 afftfilt_filter_deps="avcodec"
3172 afftfilt_filter_select="fft"
3173 afir_filter_deps="avcodec"
3174 afir_filter_select="fft"
3175 amovie_filter_deps="avcodec avformat"
3176 aresample_filter_deps="swresample"
3177 ass_filter_deps="libass"
3178 atempo_filter_deps="avcodec"
3179 atempo_filter_select="rdft"
3180 azmq_filter_deps="libzmq"
3181 blackframe_filter_deps="gpl"
3182 boxblur_filter_deps="gpl"
3183 bs2b_filter_deps="libbs2b"
3184 colormatrix_filter_deps="gpl"
3185 coreimage_filter_deps="coreimage appkit"
3186 coreimage_filter_extralibs="-framework OpenGL"
3187 coreimagesrc_filter_deps="coreimage appkit"
3188 coreimagesrc_filter_extralibs="-framework OpenGL"
3189 cover_rect_filter_deps="avcodec avformat gpl"
3190 cropdetect_filter_deps="gpl"
3191 deinterlace_qsv_filter_deps="libmfx"
3192 deinterlace_vaapi_filter_deps="vaapi"
3193 delogo_filter_deps="gpl"
3194 deshake_filter_select="pixelutils"
3195 deshake_filter_suggest="opencl"
3196 drawtext_filter_deps="libfreetype"
3197 drawtext_filter_suggest="libfontconfig libfribidi"
3198 elbg_filter_deps="avcodec"
3199 eq_filter_deps="gpl"
3200 fftfilt_filter_deps="avcodec"
3201 fftfilt_filter_select="rdft"
3202 find_rect_filter_deps="avcodec avformat gpl"
3203 firequalizer_filter_deps="avcodec"
3204 firequalizer_filter_select="rdft"
3205 flite_filter_deps="libflite"
3206 framerate_filter_select="pixelutils"
3207 frei0r_filter_deps="frei0r libdl"
3208 frei0r_src_filter_deps="frei0r libdl"
3209 fspp_filter_deps="gpl"
3210 geq_filter_deps="gpl"
3211 histeq_filter_deps="gpl"
3212 hqdn3d_filter_deps="gpl"
3213 interlace_filter_deps="gpl"
3214 kerndeint_filter_deps="gpl"
3215 ladspa_filter_deps="ladspa libdl"
3216 mcdeint_filter_deps="avcodec gpl"
3217 movie_filter_deps="avcodec avformat"
3218 mpdecimate_filter_deps="gpl"
3219 mpdecimate_filter_select="pixelutils"
3220 mptestsrc_filter_deps="gpl"
3221 negate_filter_deps="lut_filter"
3222 nnedi_filter_deps="gpl"
3223 ocr_filter_deps="libtesseract"
3224 ocv_filter_deps="libopencv"
3225 overlay_qsv_filter_deps="libmfx"
3226 overlay_qsv_filter_select="qsvvpp"
3227 owdenoise_filter_deps="gpl"
3228 pan_filter_deps="swresample"
3229 perspective_filter_deps="gpl"
3230 phase_filter_deps="gpl"
3231 pp7_filter_deps="gpl"
3232 pp_filter_deps="gpl postproc"
3233 pullup_filter_deps="gpl"
3234 removelogo_filter_deps="avcodec avformat swscale"
3235 repeatfields_filter_deps="gpl"
3236 resample_filter_deps="avresample"
3237 rubberband_filter_deps="librubberband"
3238 sab_filter_deps="gpl swscale"
3239 scale2ref_filter_deps="swscale"
3240 scale_filter_deps="swscale"
3241 scale_qsv_filter_deps="libmfx"
3242 select_filter_select="pixelutils"
3243 showcqt_filter_deps="avcodec avformat swscale"
3244 showcqt_filter_suggest="libfontconfig libfreetype"
3245 showcqt_filter_select="fft"
3246 showfreqs_filter_deps="avcodec"
3247 showfreqs_filter_select="fft"
3248 showspectrum_filter_deps="avcodec"
3249 showspectrum_filter_select="fft"
3250 showspectrumpic_filter_deps="avcodec"
3251 showspectrumpic_filter_select="fft"
3252 signature_filter_deps="gpl avcodec avformat"
3253 smartblur_filter_deps="gpl swscale"
3254 sofalizer_filter_deps="libmysofa avcodec"
3255 sofalizer_filter_select="fft"
3256 spectrumsynth_filter_deps="avcodec"
3257 spectrumsynth_filter_select="fft"
3258 spp_filter_deps="gpl avcodec"
3259 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3260 stereo3d_filter_deps="gpl"
3261 subtitles_filter_deps="avformat avcodec libass"
3262 super2xsai_filter_deps="gpl"
3263 pixfmts_super2xsai_test_deps="super2xsai_filter"
3264 tinterlace_filter_deps="gpl"
3265 tinterlace_merge_test_deps="tinterlace_filter"
3266 tinterlace_pad_test_deps="tinterlace_filter"
3267 tonemap_filter_deps="const_nan"
3268 uspp_filter_deps="gpl avcodec"
3269 unsharp_filter_suggest="opencl"
3270 vaguedenoiser_filter_deps="gpl"
3271 vidstabdetect_filter_deps="libvidstab"
3272 vidstabtransform_filter_deps="libvidstab"
3273 libvmaf_filter_deps="libvmaf"
3274 zmq_filter_deps="libzmq"
3275 zoompan_filter_deps="swscale"
3276 zscale_filter_deps="libzimg const_nan"
3277 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3278 vpp_qsv_filter_deps="libmfx"
3279 vpp_qsv_filter_select="qsvvpp"
3280
3281 # examples
3282 avio_dir_cmd_deps="avformat avutil"
3283 avio_reading_deps="avformat avcodec avutil"
3284 decode_audio_example_deps="avcodec avutil"
3285 decode_video_example_deps="avcodec avutil"
3286 demuxing_decoding_example_deps="avcodec avformat avutil"
3287 encode_audio_example_deps="avcodec avutil"
3288 encode_video_example_deps="avcodec avutil"
3289 extract_mvs_example_deps="avcodec avformat avutil"
3290 filter_audio_example_deps="avfilter avutil"
3291 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3292 filtering_video_example_deps="avfilter avcodec avformat avutil"
3293 http_multiclient_example_deps="avformat avutil fork"
3294 hw_decode_example_deps="avcodec avformat avutil"
3295 metadata_example_deps="avformat avutil"
3296 muxing_example_deps="avcodec avformat avutil swscale"
3297 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3298 remuxing_example_deps="avcodec avformat avutil"
3299 resampling_audio_example_deps="avutil swresample"
3300 scaling_video_example_deps="avutil swscale"
3301 transcode_aac_example_deps="avcodec avformat swresample"
3302 transcoding_example_deps="avfilter avcodec avformat avutil"
3303
3304 # EXTRALIBS_LIST
3305 cpu_init_extralibs="pthreads_extralibs"
3306 cws2fws_extralibs="zlib_extralibs"
3307
3308 # libraries, in linking order
3309 avcodec_deps="avutil"
3310 avcodec_suggest="libm"
3311 avcodec_select="null_bsf"
3312 avdevice_deps="avformat avcodec avutil"
3313 avdevice_suggest="libm"
3314 avfilter_deps="avutil"
3315 avfilter_suggest="libm"
3316 avformat_deps="avcodec avutil"
3317 avformat_suggest="libm network zlib"
3318 avresample_deps="avutil"
3319 avresample_suggest="libm"
3320 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3321 postproc_deps="avutil gpl"
3322 postproc_suggest="libm"
3323 swresample_deps="avutil"
3324 swresample_suggest="libm libsoxr"
3325 swscale_deps="avutil"
3326 swscale_suggest="libm"
3327
3328 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3329 avfilter_extralibs="pthreads_extralibs"
3330 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3331
3332 # programs
3333 ffmpeg_deps="avcodec avfilter avformat swresample"
3334 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3335                null_filter
3336                trim_filter"
3337 ffmpeg_suggest="ole32 psapi shell32"
3338 ffplay_deps="avcodec avformat swscale swresample sdl2"
3339 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3340 ffplay_suggest="shell32"
3341 ffprobe_deps="avcodec avformat"
3342 ffprobe_suggest="shell32"
3343 ffserver_deps="avformat fork sarestart"
3344 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3345
3346 # documentation
3347 podpages_deps="perl"
3348 manpages_deps="perl pod2man"
3349 htmlpages_deps="perl"
3350 htmlpages_deps_any="makeinfo_html texi2html"
3351 txtpages_deps="perl makeinfo"
3352 doc_deps_any="manpages htmlpages podpages txtpages"
3353
3354 # default parameters
3355
3356 logfile="ffbuild/config.log"
3357
3358 # installation paths
3359 prefix_default="/usr/local"
3360 bindir_default='${prefix}/bin'
3361 datadir_default='${prefix}/share/ffmpeg'
3362 docdir_default='${prefix}/share/doc/ffmpeg'
3363 incdir_default='${prefix}/include'
3364 libdir_default='${prefix}/lib'
3365 mandir_default='${prefix}/share/man'
3366
3367 # toolchain
3368 ar_default="ar"
3369 cc_default="gcc"
3370 cxx_default="g++"
3371 host_cc_default="gcc"
3372 doxygen_default="doxygen"
3373 install="install"
3374 ln_s_default="ln -s -f"
3375 nm_default="nm -g"
3376 pkg_config_default=pkg-config
3377 ranlib_default="ranlib"
3378 strip_default="strip"
3379 version_script='--version-script'
3380 objformat="elf32"
3381 x86asmexe_default="nasm"
3382 windres_default="windres"
3383 nvcc_default="nvcc"
3384 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3385 striptype="direct"
3386
3387 # OS
3388 target_os_default=$(tolower $(uname -s))
3389 host_os=$target_os_default
3390
3391 # machine
3392 if test "$target_os_default" = aix; then
3393     arch_default=$(uname -p)
3394     strip_default="strip -X32_64"
3395 else
3396     arch_default=$(uname -m)
3397 fi
3398 cpu="generic"
3399 intrinsics="none"
3400
3401 # configurable options
3402 enable $PROGRAM_LIST
3403 enable $DOCUMENT_LIST
3404 enable $EXAMPLE_LIST
3405 enable $(filter_out avresample $LIBRARY_LIST)
3406 enable stripping
3407
3408 enable asm
3409 enable debug
3410 enable doc
3411 enable faan faandct faanidct
3412 enable optimizations
3413 enable runtime_cpudetect
3414 enable safe_bitstream_reader
3415 enable static
3416 enable swscale_alpha
3417 enable valgrind_backtrace
3418
3419 sws_max_filter_size_default=256
3420 set_default sws_max_filter_size
3421
3422 # internal components are enabled by default
3423 enable $EXTRALIBS_LIST
3424
3425 # Avoid external, non-system, libraries getting enabled by dependency resolution
3426 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3427
3428 # build settings
3429 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3430 LIBPREF="lib"
3431 LIBSUF=".a"
3432 FULLNAME='$(NAME)$(BUILDSUF)'
3433 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3434 SLIBPREF="lib"
3435 SLIBSUF=".so"
3436 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3437 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3438 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3439 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3440 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3441 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3442 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3443
3444 asflags_filter=echo
3445 cflags_filter=echo
3446 ldflags_filter=echo
3447
3448 AS_C='-c'
3449 AS_O='-o $@'
3450 CC_C='-c'
3451 CC_E='-E -o $@'
3452 CC_O='-o $@'
3453 CXX_C='-c'
3454 CXX_O='-o $@'
3455 OBJCC_C='-c'
3456 OBJCC_E='-E -o $@'
3457 OBJCC_O='-o $@'
3458 X86ASM_O='-o $@'
3459 LD_O='-o $@'
3460 LD_LIB='-l%'
3461 LD_PATH='-L'
3462 HOSTCC_C='-c'
3463 HOSTCC_E='-E -o $@'
3464 HOSTCC_O='-o $@'
3465 HOSTLD_O='-o $@'
3466 NVCC_C='-c'
3467 NVCC_O='-o $@'
3468
3469 host_extralibs='-lm'
3470 host_cflags_filter=echo
3471 host_ldflags_filter=echo
3472
3473 target_path='$(CURDIR)'
3474
3475 # since the object filename is not given with the -MM flag, the compiler
3476 # is only able to print the basename, and we must add the path ourselves
3477 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3478 DEPFLAGS='-MM'
3479
3480 mkdir -p ffbuild
3481
3482 # find source path
3483 if test -f configure; then
3484     source_path=.
3485 else
3486     source_path=$(cd $(dirname "$0"); pwd)
3487     case "$source_path" in
3488         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3489     esac
3490     test -e "$source_path/config.h" &&
3491         die "Out of tree builds are impossible with config.h in source dir."
3492 fi
3493
3494 for v in "$@"; do
3495     r=${v#*=}
3496     l=${v%"$r"}
3497     r=$(sh_quote "$r")
3498     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3499 done
3500
3501 find_things(){
3502     thing=$1
3503     pattern=$2
3504     file=$source_path/$3
3505     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3506 }
3507
3508 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3509 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3510 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3511 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3512 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3513 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3514 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3515 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3516 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3517
3518 find_things_extern(){
3519     thing=$1
3520     pattern=$2
3521     file=$source_path/$3
3522     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3523 }
3524
3525 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3526 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3527
3528 AVCODEC_COMPONENTS_LIST="
3529     $BSF_LIST
3530     $DECODER_LIST
3531     $ENCODER_LIST
3532     $HWACCEL_LIST
3533     $PARSER_LIST
3534 "
3535
3536 AVDEVICE_COMPONENTS_LIST="
3537     $INDEV_LIST
3538     $OUTDEV_LIST
3539 "
3540
3541 AVFILTER_COMPONENTS_LIST="
3542     $FILTER_LIST
3543 "
3544
3545 AVFORMAT_COMPONENTS_LIST="
3546     $DEMUXER_LIST
3547     $MUXER_LIST
3548     $PROTOCOL_LIST
3549 "
3550
3551 ALL_COMPONENTS="
3552     $AVCODEC_COMPONENTS_LIST
3553     $AVDEVICE_COMPONENTS_LIST
3554     $AVFILTER_COMPONENTS_LIST
3555     $AVFORMAT_COMPONENTS_LIST
3556 "
3557
3558 for n in $COMPONENT_LIST; do
3559     v=$(toupper ${n%s})_LIST
3560     eval enable \$$v
3561     eval ${n}_if_any="\$$v"
3562 done
3563
3564 enable $ARCH_EXT_LIST
3565
3566 die_unknown(){
3567     echo "Unknown option \"$1\"."
3568     echo "See $0 --help for available options."
3569     exit 1
3570 }
3571
3572 print_in_columns() {
3573     cols=$(expr $ncols / 24)
3574     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3575 }
3576
3577 show_list() {
3578     suffix=_$1
3579     shift
3580     echo $* | sed s/$suffix//g | print_in_columns
3581     exit 0
3582 }
3583
3584 rand_list(){
3585     IFS=', '
3586     set -- $*
3587     unset IFS
3588     for thing; do
3589         comp=${thing%:*}
3590         prob=${thing#$comp}
3591         prob=${prob#:}
3592         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3593         echo "prob ${prob:-0.5}"
3594         printf '%s\n' $comp
3595     done
3596 }
3597
3598 do_random(){
3599     action=$1
3600     shift
3601     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3602     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3603 }
3604
3605 for opt do
3606     optval="${opt#*=}"
3607     case "$opt" in
3608         --extra-ldflags=*)
3609             add_ldflags $optval
3610         ;;
3611         --extra-ldexeflags=*)
3612             add_ldexeflags $optval
3613         ;;
3614         --extra-ldsoflags=*)
3615             add_ldsoflags $optval
3616         ;;
3617         --extra-ldlibflags=*)
3618             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3619                  "removed in the future. Use --extra-ldsoflags instead."
3620             add_ldsoflags $optval
3621         ;;
3622         --extra-libs=*)
3623             add_extralibs $optval
3624         ;;
3625         --disable-devices)
3626             disable $INDEV_LIST $OUTDEV_LIST
3627         ;;
3628         --enable-debug=*)
3629             debuglevel="$optval"
3630         ;;
3631         --disable-programs)
3632             disable $PROGRAM_LIST
3633         ;;
3634         --disable-everything)
3635             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3636         ;;
3637         --disable-all)
3638             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3639             disable $LIBRARY_LIST $PROGRAM_LIST doc
3640             enable avutil
3641         ;;
3642         --enable-random|--disable-random)
3643             action=${opt%%-random}
3644             do_random ${action#--} $COMPONENT_LIST
3645         ;;
3646         --enable-random=*|--disable-random=*)
3647             action=${opt%%-random=*}
3648             do_random ${action#--} $optval
3649         ;;
3650         --enable-sdl)
3651             enable sdl2
3652         ;;
3653         --enable-*=*|--disable-*=*)
3654             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3655             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3656             eval list=\$$(toupper $thing)_LIST
3657             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3658             list=$(filter "$name" $list)
3659             [ "$list" = "" ] && warn "Option $opt did not match anything"
3660             $action $list
3661         ;;
3662         --enable-yasm|--disable-yasm)
3663             warn "The ${opt} option is only provided for compatibility and will be\n"\
3664                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3665             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3666         ;;
3667         --yasmexe=*)
3668             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3669                  "removed in the future. Use --x86asmexe instead."
3670             x86asmexe="$optval"
3671         ;;
3672         --enable-?*|--disable-?*)
3673             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3674             if is_in $option $COMPONENT_LIST; then
3675                 test $action = disable && action=unset
3676                 eval $action \$$(toupper ${option%s})_LIST
3677             elif is_in $option $CMDLINE_SELECT; then
3678                 $action $option
3679             else
3680                 die_unknown $opt
3681             fi
3682         ;;
3683         --list-*)
3684             NAME="${opt#--list-}"
3685             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3686             NAME=${NAME%s}
3687             eval show_list $NAME \$$(toupper $NAME)_LIST
3688         ;;
3689         --help|-h) show_help
3690         ;;
3691         --quiet|-q) quiet=yes
3692         ;;
3693         --fatal-warnings) enable fatal_warnings
3694         ;;
3695         --libfuzzer=*)
3696             libfuzzer_path="$optval"
3697         ;;
3698         *)
3699             optname="${opt%%=*}"
3700             optname="${optname#--}"
3701             optname=$(echo "$optname" | sed 's/-/_/g')
3702             if is_in $optname $CMDLINE_SET; then
3703                 eval $optname='$optval'
3704             elif is_in $optname $CMDLINE_APPEND; then
3705                 append $optname "$optval"
3706             else
3707                 die_unknown $opt
3708             fi
3709         ;;
3710     esac
3711 done
3712
3713 for e in $env; do
3714     eval "export $e"
3715 done
3716
3717 if disabled autodetect; then
3718
3719     # Unless iconv is explicitely disabled by the user, we still want to probe
3720     # for the iconv from the libc.
3721     disabled iconv || enable libc_iconv
3722
3723     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3724     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3725 fi
3726 # Mark specifically enabled, but normally autodetected libraries as requested.
3727 for lib in $AUTODETECT_LIBS; do
3728     enabled $lib && request $lib
3729 done
3730 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3731 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3732 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3733
3734 disabled logging && logfile=/dev/null
3735
3736 # command line configuration sanity checks
3737
3738 # we need to build at least one lib type
3739 if ! enabled_any static shared; then
3740     cat <<EOF
3741 At least one library type must be built.
3742 Specify --enable-static to build the static libraries or --enable-shared to
3743 build the shared libraries as well. To only build the shared libraries specify
3744 --disable-static in addition to --enable-shared.
3745 EOF
3746     exit 1
3747 fi
3748
3749 die_license_disabled() {
3750     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3751 }
3752
3753 die_license_disabled_gpl() {
3754     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3755 }
3756
3757 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3758 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3759
3760 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3761 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3762
3763 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3764
3765 enabled_all gnutls openssl &&
3766     die "GnuTLS and OpenSSL must not be enabled at the same time."
3767
3768 # Disable all the library-specific components if the library itself
3769 # is disabled, see AVCODEC_LIST and following _LIST variables.
3770
3771 disable_components(){
3772     disabled ${1} && disable $(
3773         eval components="\$$(toupper ${1})_COMPONENTS"
3774         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3775     )
3776 }
3777
3778 map 'disable_components $v' $LIBRARY_LIST
3779
3780 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3781 set >> $logfile
3782
3783 test -n "$valgrind" && toolchain="valgrind-memcheck"
3784
3785 enabled ossfuzz && {
3786     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3787     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3788 }
3789
3790 case "$toolchain" in
3791     *-asan)
3792         cc_default="${toolchain%-asan}"
3793         add_cflags  -fsanitize=address
3794         add_ldflags -fsanitize=address
3795     ;;
3796     *-msan)
3797         cc_default="${toolchain%-msan}"
3798         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3799         add_ldflags -fsanitize=memory
3800     ;;
3801     *-tsan)
3802         cc_default="${toolchain%-tsan}"
3803         add_cflags  -fsanitize=thread -fPIE
3804         add_ldflags -fsanitize=thread -pie
3805         case "$toolchain" in
3806             gcc-tsan)
3807                 add_cflags  -fPIC
3808                 add_ldflags -fPIC
3809                 ;;
3810         esac
3811     ;;
3812     *-usan)
3813         cc_default="${toolchain%-usan}"
3814         add_cflags  -fsanitize=undefined
3815         add_ldflags -fsanitize=undefined
3816     ;;
3817     valgrind-*)
3818         target_exec_default="valgrind"
3819         case "$toolchain" in
3820             valgrind-massif)
3821                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3822                 ;;
3823             valgrind-memcheck)
3824                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3825                 ;;
3826         esac
3827     ;;
3828     msvc)
3829         # Check whether the current MSVC version needs the C99 converter.
3830         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3831         # support enough of C99 to build ffmpeg. Default to the new
3832         # behaviour if the regexp was unable to match anything, since this
3833         # successfully parses the version number of existing supported
3834         # versions that require the converter (MSVC 2010 and 2012).
3835         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3836         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3837             cc_default="cl"
3838             cxx_default="cl"
3839         else
3840             cc_default="c99wrap cl"
3841             cxx_default="c99wrap cl"
3842         fi
3843         ld_default="$source_path/compat/windows/mslink"
3844         nm_default="dumpbin -symbols"
3845         ar_default="lib"
3846         case "$arch" in
3847         aarch64|arm64)
3848             as_default="armasm64"
3849             ;;
3850         arm*)
3851             as_default="armasm"
3852             ;;
3853         esac
3854         target_os_default="win32"
3855         # Use a relative path for TMPDIR. This makes sure all the
3856         # ffconf temp files are written with a relative path, avoiding
3857         # issues with msys/win32 path conversion for MSVC parameters
3858         # such as -Fo<file> or -out:<file>.
3859         TMPDIR=.
3860     ;;
3861     icl)
3862         cc_default="icl"
3863         ld_default="xilink"
3864         nm_default="dumpbin -symbols"
3865         ar_default="xilib"
3866         target_os_default="win32"
3867         TMPDIR=.
3868     ;;
3869     gcov)
3870         add_cflags  -fprofile-arcs -ftest-coverage
3871         add_ldflags -fprofile-arcs -ftest-coverage
3872     ;;
3873     llvm-cov)
3874         add_cflags -fprofile-arcs -ftest-coverage
3875         add_ldflags --coverage
3876     ;;
3877     hardened)
3878         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3879         add_cflags   -fno-strict-overflow -fstack-protector-all
3880         add_ldflags  -Wl,-z,relro -Wl,-z,now
3881         add_cflags   -fPIE
3882         add_ldexeflags -fPIE -pie
3883     ;;
3884     ?*)
3885         die "Unknown toolchain $toolchain"
3886     ;;
3887 esac
3888
3889 if test -n "$cross_prefix"; then
3890     test -n "$arch" && test -n "$target_os" ||
3891         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3892     enable cross_compile
3893 fi
3894
3895 ar_default="${cross_prefix}${ar_default}"
3896 cc_default="${cross_prefix}${cc_default}"
3897 cxx_default="${cross_prefix}${cxx_default}"
3898 nm_default="${cross_prefix}${nm_default}"
3899 pkg_config_default="${cross_prefix}${pkg_config_default}"
3900 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3901     ranlib_default="${cross_prefix}${ranlib_default} -D"
3902 else
3903     ranlib_default="${cross_prefix}${ranlib_default}"
3904 fi
3905 strip_default="${cross_prefix}${strip_default}"
3906 windres_default="${cross_prefix}${windres_default}"
3907
3908 sysinclude_default="${sysroot}/usr/include"
3909
3910 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3911     target_exec target_os x86asmexe nvcc
3912 enabled cross_compile || host_cc_default=$cc
3913 set_default host_cc
3914
3915 pkg_config_fail_message=""
3916 if ! $pkg_config --version >/dev/null 2>&1; then
3917     warn "$pkg_config not found, library detection may fail."
3918     pkg_config=false
3919 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3920     pkg_config_fail_message="
3921 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3922 fi
3923
3924 if test $doxygen != $doxygen_default && \
3925   ! $doxygen --version >/dev/null 2>&1; then
3926     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3927 fi
3928
3929 exesuf() {
3930     case $1 in
3931         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3932     esac
3933 }
3934
3935 EXESUF=$(exesuf $target_os)
3936 HOSTEXESUF=$(exesuf $host_os)
3937
3938 # set temporary file name
3939 : ${TMPDIR:=$TEMPDIR}
3940 : ${TMPDIR:=$TMP}
3941 : ${TMPDIR:=/tmp}
3942
3943 if [ -n "$tempprefix" ] ; then
3944     mktemp(){
3945         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3946         echo "$tmpname"
3947         mkdir "$tmpname"
3948     }
3949 elif ! check_cmd mktemp -u XXXXXX; then
3950     # simple replacement for missing mktemp
3951     # NOT SAFE FOR GENERAL USE
3952     mktemp(){
3953         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3954         echo "$tmpname"
3955         mkdir "$tmpname"
3956     }
3957 fi
3958
3959 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3960     die "Unable to create temporary directory in $TMPDIR."
3961
3962 tmpfile(){
3963     tmp="${FFTMPDIR}/test"$2
3964     (set -C; exec > $tmp) 2> /dev/null ||
3965         die "Unable to create temporary file in $FFTMPDIR."
3966     eval $1=$tmp
3967 }
3968
3969 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3970 trap 'exit 2' INT
3971
3972 tmpfile TMPASM .asm
3973 tmpfile TMPC   .c
3974 tmpfile TMPCPP .cpp
3975 tmpfile TMPE   $EXESUF
3976 tmpfile TMPH   .h
3977 tmpfile TMPM   .m
3978 tmpfile TMPO   .o
3979 tmpfile TMPS   .S
3980 tmpfile TMPSH  .sh
3981 tmpfile TMPV   .ver
3982
3983 unset -f mktemp
3984
3985 chmod +x $TMPE
3986
3987 # make sure we can execute files in $TMPDIR
3988 cat > $TMPSH 2>> $logfile <<EOF
3989 #! /bin/sh
3990 EOF
3991 chmod +x $TMPSH >> $logfile 2>&1
3992 if ! $TMPSH >> $logfile 2>&1; then
3993     cat <<EOF
3994 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3995 variable to another directory and make sure that it is not mounted noexec.
3996 EOF
3997     die "Sanity test failed."
3998 fi
3999
4000 armasm_flags(){
4001     for flag; do
4002         case $flag in
4003             # Filter out MSVC cl.exe options from cflags that shouldn't
4004             # be passed to gas-preprocessor
4005             -M[TD]*)                                            ;;
4006             *)                  echo $flag                      ;;
4007         esac
4008    done
4009 }
4010
4011 cparser_flags(){
4012     for flag; do
4013         case $flag in
4014             -Wno-switch)             echo -Wno-switch-enum ;;
4015             -Wno-format-zero-length) ;;
4016             -Wdisabled-optimization) ;;
4017             -Wno-pointer-sign)       echo -Wno-other ;;
4018             *)                       echo $flag ;;
4019         esac
4020     done
4021 }
4022
4023 msvc_common_flags(){
4024     for flag; do
4025         case $flag in
4026             # In addition to specifying certain flags under the compiler
4027             # specific filters, they must be specified here as well or else the
4028             # generic catch all at the bottom will print the original flag.
4029             -Wall)                ;;
4030             -Wextra)              ;;
4031             -std=c99)             ;;
4032             # Common flags
4033             -fomit-frame-pointer) ;;
4034             -g)                   echo -Z7 ;;
4035             -fno-math-errno)      ;;
4036             -fno-common)          ;;
4037             -fno-signed-zeros)    ;;
4038             -fPIC)                ;;
4039             -mthumb)              ;;
4040             -march=*)             ;;
4041             -lz)                  echo zlib.lib ;;
4042             -lx264)               echo libx264.lib ;;
4043             -lstdc++)             ;;
4044             -l*)                  echo ${flag#-l}.lib ;;
4045             -LARGEADDRESSAWARE)   echo $flag ;;
4046             -L*)                  echo -libpath:${flag#-L} ;;
4047             *)                    echo $flag ;;
4048         esac
4049     done
4050 }
4051
4052 msvc_flags(){
4053     msvc_common_flags "$@"
4054     for flag; do
4055         case $flag in
4056             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4057                                        -wd4554 ;;
4058             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4059                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4060                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4061                                        -wd4307 \
4062                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4063         esac
4064     done
4065 }
4066
4067 icl_flags(){
4068     msvc_common_flags "$@"
4069     for flag; do
4070         case $flag in
4071             # Despite what Intel's documentation says -Wall, which is supported
4072             # on Windows, does enable remarks so disable them here.
4073             -Wall)                echo $flag -Qdiag-disable:remark ;;
4074             -std=c99)             echo -Qstd=c99 ;;
4075             -flto)                echo -ipo ;;
4076         esac
4077     done
4078 }
4079
4080 icc_flags(){
4081     for flag; do
4082         case $flag in
4083             -flto)                echo -ipo ;;
4084             *)                    echo $flag ;;
4085         esac
4086     done
4087 }
4088
4089 suncc_flags(){
4090     for flag; do
4091         case $flag in
4092             -march=*|-mcpu=*)
4093                 case "${flag#*=}" in
4094                     native)                   echo -xtarget=native       ;;
4095                     v9|niagara)               echo -xarch=sparc          ;;
4096                     ultrasparc)               echo -xarch=sparcvis       ;;
4097                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4098                     i586|pentium)             echo -xchip=pentium        ;;
4099                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4100                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4101                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4102                     pentium4*)          echo -xtarget=pentium4           ;;
4103                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4104                     *-sse3)             echo -xarch=sse3                 ;;
4105                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4106                     bonnell)                   echo -xarch=ssse3         ;;
4107                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4108                     westmere)                  echo -xtarget=westmere    ;;
4109                     silvermont)                echo -xarch=sse4_2        ;;
4110                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4111                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4112                                                echo -xarch=avx           ;;
4113                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4114                     btver1)                    echo -xarch=amdsse4a      ;;
4115                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4116                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4117                     k8|opteron|athlon64|athlon-fx)
4118                                                echo -xarch=sse2a         ;;
4119                     athlon*)                   echo -xarch=pentium_proa  ;;
4120                 esac
4121                 ;;
4122             -std=c99)             echo -xc99              ;;
4123             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4124             -fPIC)                echo -KPIC -xcode=pic32 ;;
4125             -W*,*)                echo $flag              ;;
4126             -f*-*|-W*|-mimpure-text)                      ;;
4127             -shared)              echo -G                 ;;
4128             *)                    echo $flag              ;;
4129         esac
4130     done
4131 }
4132
4133 probe_cc(){
4134     pfx=$1
4135     _cc=$2
4136     first=$3
4137
4138     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4139     unset _ld_o _ldflags _ld_lib _ld_path
4140     unset _depflags _DEPCMD _DEPFLAGS
4141     _flags_filter=echo
4142
4143     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4144         true # no-op to avoid reading stdin in following checks
4145     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4146         _type=llvm_gcc
4147         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4148         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4149         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4150         _cflags_speed='-O3'
4151         _cflags_size='-Os'
4152     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4153         _type=gcc
4154         gcc_version=$($_cc --version | head -n1)
4155         gcc_basever=$($_cc -dumpversion)
4156         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4157         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4158         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4159         case $gcc_basever in
4160             2) ;;
4161             2.*) ;;
4162             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4163         esac
4164         if [ "$first" = true ]; then
4165             case $gcc_basever in
4166                 4.2*)
4167                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4168             esac
4169         fi
4170         _cflags_speed='-O3'
4171         _cflags_size='-Os'
4172     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4173         _type=icc
4174         _ident=$($_cc --version | head -n1)
4175         _depflags='-MMD'
4176         _cflags_speed='-O3'
4177         _cflags_size='-Os'
4178         _cflags_noopt='-O1'
4179         _flags_filter=icc_flags
4180     elif $_cc -v 2>&1 | grep -q xlc; then
4181         _type=xlc
4182         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4183         _cflags_speed='-O5'
4184         _cflags_size='-O5 -qcompact'
4185     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4186         test -d "$sysroot" || die "No valid sysroot specified."
4187         _type=armcc
4188         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4189         armcc_conf="$PWD/armcc.conf"
4190         $_cc --arm_linux_configure                 \
4191              --arm_linux_config_file="$armcc_conf" \
4192              --configure_sysroot="$sysroot"        \
4193              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4194              die "Error creating armcc configuration file."
4195         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4196         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4197         as_default="${cross_prefix}gcc"
4198         _depflags='-MMD'
4199         _cflags_speed='-O3'
4200         _cflags_size='-Os'
4201     elif $_cc -v 2>&1 | grep -q clang; then
4202         _type=clang
4203         _ident=$($_cc --version 2>/dev/null | head -n1)
4204         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4205         _cflags_speed='-O3'
4206         _cflags_size='-Oz'
4207     elif $_cc -V 2>&1 | grep -q Sun; then
4208         _type=suncc
4209         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4210         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4211         _DEPFLAGS='-xM1 -xc99'
4212         _ldflags='-std=c99'
4213         _cflags_speed='-O5'
4214         _cflags_size='-O5 -xspace'
4215         _flags_filter=suncc_flags
4216     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4217         _type=pathscale
4218         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4219         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4220         _cflags_speed='-O2'
4221         _cflags_size='-Os'
4222         _flags_filter='filter_out -Wdisabled-optimization'
4223     elif $_cc -v 2>&1 | grep -q Open64; then
4224         _type=open64
4225         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4226         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4227         _cflags_speed='-O2'
4228         _cflags_size='-Os'
4229         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4230     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4231         _type=armasm
4232         _ident=$($_cc | head -n1)
4233         # 4509: "This form of conditional instruction is deprecated"
4234         _flags="-nologo -ignore 4509"
4235         _flags_filter=armasm_flags
4236     elif $_cc 2>&1 | grep -q Intel; then
4237         _type=icl
4238         _ident=$($_cc 2>&1 | head -n1)
4239         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4240         # Not only is O3 broken on 13.x+ but it is slower on all previous
4241         # versions (tested) as well.
4242         _cflags_speed="-O2"
4243         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4244         if $_cc 2>&1 | grep -q Linker; then
4245             _ld_o='-out:$@'
4246         else
4247             _ld_o='-Fe$@'
4248         fi
4249         _cc_o='-Fo$@'
4250         _cc_e='-P'
4251         _flags_filter=icl_flags
4252         _ld_lib='lib%.a'
4253         _ld_path='-libpath:'
4254         # -Qdiag-error to make icl error when seeing certain unknown arguments
4255         _flags='-nologo -Qdiag-error:4044,10157'
4256         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4257         # with MSVC which enables it by default.
4258         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4259         disable stripping
4260     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4261         # lld can emulate multiple different linkers; in ms link.exe mode,
4262         # the -? parameter gives the help output which contains an identifyable
4263         # string, while it gives an error in other modes.
4264         _type=lld-link
4265         # The link.exe mode doesn't have a switch for getting the version,
4266         # but we can force it back to gnu mode and get the version from there.
4267         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4268         _ld_o='-out:$@'
4269         _flags_filter=msvc_flags
4270         _ld_lib='lib%.a'
4271         _ld_path='-libpath:'
4272     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4273         _type=msvc
4274         _ident=$($_cc 2>&1 | head -n1)
4275         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4276         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4277         _cflags_speed="-O2"
4278         _cflags_size="-O1"
4279         _cflags_noopt="-O1"
4280         if $_cc -nologo- 2>&1 | grep -q Linker; then
4281             _ld_o='-out:$@'
4282         else
4283             _ld_o='-Fe$@'
4284         fi
4285         _cc_o='-Fo$@'
4286         _cc_e='-P -Fi$@'
4287         _flags_filter=msvc_flags
4288         _ld_lib='lib%.a'
4289         _ld_path='-libpath:'
4290         _flags='-nologo'
4291         disable stripping
4292     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4293         _type=cparser
4294         _ident=$($_cc --version | head -n1)
4295         _depflags='-MMD'
4296         _cflags_speed='-O4'
4297         _cflags_size='-O2'
4298         _flags_filter=cparser_flags
4299     fi
4300
4301     eval ${pfx}_type=\$_type
4302     eval ${pfx}_ident=\$_ident
4303 }
4304
4305 set_ccvars(){
4306     eval ${1}_C=\${_cc_c-\${${1}_C}}
4307     eval ${1}_E=\${_cc_e-\${${1}_E}}
4308     eval ${1}_O=\${_cc_o-\${${1}_O}}
4309
4310     if [ -n "$_depflags" ]; then
4311         eval ${1}_DEPFLAGS=\$_depflags
4312     else
4313         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4314         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4315         eval DEP${1}FLAGS=\$_flags
4316     fi
4317 }
4318
4319 probe_cc cc "$cc" "true"
4320 cflags_filter=$_flags_filter
4321 cflags_speed=$_cflags_speed
4322 cflags_size=$_cflags_size
4323 cflags_noopt=$_cflags_noopt
4324 add_cflags $_flags $_cflags
4325 cc_ldflags=$_ldflags
4326 set_ccvars CC
4327 set_ccvars CXX
4328
4329 probe_cc hostcc "$host_cc"
4330 host_cflags_filter=$_flags_filter
4331 host_cflags_speed=$_cflags_speed
4332 add_host_cflags  $_flags $_cflags
4333 set_ccvars HOSTCC
4334
4335 test -n "$cc_type" && enable $cc_type ||
4336     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4337
4338 : ${as_default:=$cc}
4339 : ${objcc_default:=$cc}
4340 : ${dep_cc_default:=$cc}
4341 : ${ld_default:=$cc}
4342 : ${host_ld_default:=$host_cc}
4343 set_default ar as objcc dep_cc ld ln_s host_ld windres
4344
4345 probe_cc as "$as"
4346 asflags_filter=$_flags_filter
4347 add_asflags $_flags $_cflags
4348 set_ccvars AS
4349
4350 probe_cc objcc "$objcc"
4351 objcflags_filter=$_flags_filter
4352 add_objcflags $_flags $_cflags
4353 set_ccvars OBJC
4354
4355 probe_cc ld "$ld"
4356 ldflags_filter=$_flags_filter
4357 add_ldflags $_flags $_ldflags
4358 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4359 LD_O=${_ld_o-$LD_O}
4360 LD_LIB=${_ld_lib-$LD_LIB}
4361 LD_PATH=${_ld_path-$LD_PATH}
4362
4363 probe_cc hostld "$host_ld"
4364 host_ldflags_filter=$_flags_filter
4365 add_host_ldflags $_flags $_ldflags
4366 HOSTLD_O=${_ld_o-$HOSTLD_O}
4367
4368 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4369     probe_cc depcc "$dep_cc"
4370     CCDEP=${_DEPCMD:-$DEPCMD}
4371     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4372     DEPCCFLAGS=$_flags
4373 fi
4374
4375 if $ar 2>&1 | grep -q Microsoft; then
4376     arflags="-nologo"
4377     ar_o='-out:$@'
4378 elif $ar 2>&1 | grep -q "\[D\] "; then
4379     arflags="rcD"
4380     ar_o='$@'
4381 else
4382     arflags="rc"
4383     ar_o='$@'
4384 fi
4385
4386 add_cflags $extra_cflags
4387 add_cxxflags $extra_cxxflags
4388 add_objcflags $extra_objcflags
4389 add_asflags $extra_cflags
4390
4391 if test -n "$sysroot"; then
4392     case "$cc_type" in
4393         gcc|llvm_gcc|clang)
4394             add_cppflags --sysroot="$sysroot"
4395             add_ldflags --sysroot="$sysroot"
4396         ;;
4397     esac
4398 fi
4399
4400 if test "$cpu" = host; then
4401     enabled cross_compile &&
4402         die "--cpu=host makes no sense when cross-compiling."
4403
4404     case "$cc_type" in
4405         gcc|llvm_gcc)
4406             check_native(){
4407                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4408                 sed -n "/cc1.*$1=/{
4409                             s/.*$1=\\([^ ]*\\).*/\\1/
4410                             p
4411                             q
4412                         }" $TMPE
4413             }
4414             cpu=$(check_native -march || check_native -mcpu)
4415         ;;
4416         clang)
4417             check_native(){
4418                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4419                 sed -n "/cc1.*-target-cpu /{
4420                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4421                             p
4422                             q
4423                         }" $TMPE
4424             }
4425             cpu=$(check_native -march)
4426         ;;
4427     esac
4428
4429     test "${cpu:-host}" = host &&
4430         die "--cpu=host not supported with compiler $cc"
4431 fi
4432
4433 # Deal with common $arch aliases
4434 case "$arch" in
4435     aarch64|arm64)
4436         arch="aarch64"
4437     ;;
4438     arm*|iPad*|iPhone*)
4439         arch="arm"
4440     ;;
4441     mips*|IP*)
4442         case "$arch" in
4443         *el)
4444             add_cppflags -EL
4445             add_ldflags -EL
4446         ;;
4447         *eb)
4448             add_cppflags -EB
4449             add_ldflags -EB
4450         ;;
4451         esac
4452         arch="mips"
4453     ;;
4454     parisc*|hppa*)
4455         arch="parisc"
4456     ;;
4457     "Power Macintosh"|ppc*|powerpc*)
4458         arch="ppc"
4459     ;;
4460     s390|s390x)
4461         arch="s390"
4462     ;;
4463     sh4|sh)
4464         arch="sh4"
4465     ;;
4466     sun4*|sparc*)
4467         arch="sparc"
4468     ;;
4469     tilegx|tile-gx)
4470         arch="tilegx"
4471     ;;
4472     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4473         arch="x86"
4474     ;;
4475 esac
4476
4477 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4478 enable $arch
4479
4480 # Add processor-specific flags
4481 if enabled aarch64; then
4482
4483     case $cpu in
4484         armv*)
4485             cpuflags="-march=$cpu"
4486         ;;
4487         *)
4488             cpuflags="-mcpu=$cpu"
4489         ;;
4490     esac
4491
4492 elif enabled alpha; then
4493
4494     cpuflags="-mcpu=$cpu"
4495
4496 elif enabled arm; then
4497
4498     check_arm_arch() {
4499         check_cpp_condition stddef.h \
4500             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4501             $cpuflags
4502     }
4503
4504     probe_arm_arch() {
4505         if   check_arm_arch 4;        then echo armv4
4506         elif check_arm_arch 4T;       then echo armv4t
4507         elif check_arm_arch 5;        then echo armv5
4508         elif check_arm_arch 5E;       then echo armv5e
4509         elif check_arm_arch 5T;       then echo armv5t
4510         elif check_arm_arch 5TE;      then echo armv5te
4511         elif check_arm_arch 5TEJ;     then echo armv5te
4512         elif check_arm_arch 6;        then echo armv6
4513         elif check_arm_arch 6J;       then echo armv6j
4514         elif check_arm_arch 6K;       then echo armv6k
4515         elif check_arm_arch 6Z;       then echo armv6z
4516         elif check_arm_arch 6ZK;      then echo armv6zk
4517         elif check_arm_arch 6T2;      then echo armv6t2
4518         elif check_arm_arch 7;        then echo armv7
4519         elif check_arm_arch 7A  7_A;  then echo armv7-a
4520         elif check_arm_arch 7S;       then echo armv7-a
4521         elif check_arm_arch 7R  7_R;  then echo armv7-r
4522         elif check_arm_arch 7M  7_M;  then echo armv7-m
4523         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4524         elif check_arm_arch 8A  8_A;  then echo armv8-a
4525         fi
4526     }
4527
4528     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4529
4530     case $cpu in
4531         armv*)
4532             cpuflags="-march=$cpu"
4533             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4534         ;;
4535         *)
4536             cpuflags="-mcpu=$cpu"
4537             case $cpu in
4538                 cortex-a*)                               subarch=armv7a  ;;
4539                 cortex-r*)                               subarch=armv7r  ;;
4540                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4541                 arm11*)                                  subarch=armv6   ;;
4542                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4543                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4544                 *)                             subarch=$(probe_arm_arch) ;;
4545             esac
4546         ;;
4547     esac
4548
4549     case "$subarch" in
4550         armv5t*)    enable fast_clz                ;;
4551         armv[6-8]*)
4552             enable fast_clz
4553             disabled fast_unaligned || enable fast_unaligned
4554             ;;
4555     esac
4556
4557 elif enabled avr32; then
4558
4559     case $cpu in
4560         ap7[02]0[0-2])
4561             subarch="avr32_ap"
4562             cpuflags="-mpart=$cpu"
4563         ;;
4564         ap)
4565             subarch="avr32_ap"
4566             cpuflags="-march=$cpu"
4567         ;;
4568         uc3[ab]*)
4569             subarch="avr32_uc"
4570             cpuflags="-mcpu=$cpu"
4571         ;;
4572         uc)
4573             subarch="avr32_uc"
4574             cpuflags="-march=$cpu"
4575         ;;
4576     esac
4577
4578 elif enabled bfin; then
4579
4580     cpuflags="-mcpu=$cpu"
4581
4582 elif enabled mips; then
4583
4584     cpuflags="-march=$cpu"
4585
4586     if [ "$cpu" != "generic" ]; then
4587         disable mips32r2
4588         disable mips32r5
4589         disable mips64r2
4590         disable mips32r6
4591         disable mips64r6
4592         disable loongson2
4593         disable loongson3
4594
4595         case $cpu in
4596             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4597                 enable mips32r2
4598                 disable msa
4599             ;;
4600             p5600|i6400|p6600)
4601                 disable mipsdsp
4602                 disable mipsdspr2
4603             ;;
4604             loongson*)
4605                 enable loongson2
4606                 enable loongson3
4607                 enable local_aligned
4608                 enable simd_align_16
4609                 enable fast_64bit
4610                 enable fast_clz
4611                 enable fast_cmov
4612                 enable fast_unaligned
4613                 disable aligned_stack
4614                 disable mipsfpu
4615                 disable mipsdsp
4616                 disable mipsdspr2
4617                 case $cpu in
4618                     loongson3*)
4619                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4620                     ;;
4621                     loongson2e)
4622                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4623                     ;;
4624                     loongson2f)
4625                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4626                     ;;
4627                 esac
4628             ;;
4629             *)
4630                 # Unknown CPU. Disable everything.
4631                 warn "unknown CPU. Disabling all MIPS optimizations."
4632                 disable mipsfpu
4633                 disable mipsdsp
4634                 disable mipsdspr2
4635                 disable msa
4636                 disable mmi
4637             ;;
4638         esac
4639
4640         case $cpu in
4641             24kc)
4642                 disable mipsfpu
4643                 disable mipsdsp
4644                 disable mipsdspr2
4645             ;;
4646             24kf*)
4647                 disable mipsdsp
4648                 disable mipsdspr2
4649             ;;
4650             24kec|34kc|1004kc)
4651                 disable mipsfpu
4652                 disable mipsdspr2
4653             ;;
4654             24kef*|34kf*|1004kf*)
4655                 disable mipsdspr2
4656             ;;
4657             74kc)
4658                 disable mipsfpu
4659             ;;
4660             p5600)
4661                 enable mips32r5
4662                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4663             ;;
4664             i6400)
4665                 enable mips64r6
4666                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4667             ;;
4668             p6600)
4669                 enable mips64r6
4670                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4671             ;;
4672         esac
4673     else
4674         # We do not disable anything. Is up to the user to disable the unwanted features.
4675         warn 'generic cpu selected'
4676     fi
4677
4678 elif enabled ppc; then
4679
4680     disable ldbrx
4681
4682     case $(tolower $cpu) in
4683         601|ppc601|powerpc601)
4684             cpuflags="-mcpu=601"
4685             disable altivec
4686         ;;
4687         603*|ppc603*|powerpc603*)
4688             cpuflags="-mcpu=603"
4689             disable altivec
4690         ;;
4691         604*|ppc604*|powerpc604*)
4692             cpuflags="-mcpu=604"
4693             disable altivec
4694         ;;
4695         g3|75*|ppc75*|powerpc75*)
4696             cpuflags="-mcpu=750"
4697             disable altivec
4698         ;;
4699         g4|745*|ppc745*|powerpc745*)
4700             cpuflags="-mcpu=7450"
4701             disable vsx
4702         ;;
4703         74*|ppc74*|powerpc74*)
4704             cpuflags="-mcpu=7400"
4705             disable vsx
4706         ;;
4707         g5|970|ppc970|powerpc970)
4708             cpuflags="-mcpu=970"
4709             disable vsx
4710         ;;
4711         power[3-6]*)
4712             cpuflags="-mcpu=$cpu"
4713             disable vsx
4714         ;;
4715         power[7-8]*)
4716             cpuflags="-mcpu=$cpu"
4717         ;;
4718         cell)
4719             cpuflags="-mcpu=cell"
4720             enable ldbrx
4721             disable vsx
4722         ;;
4723         e500mc)
4724             cpuflags="-mcpu=e500mc"
4725             disable altivec
4726         ;;
4727         e500v2)
4728             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4729             disable altivec
4730             disable dcbzl
4731         ;;
4732         e500)
4733             cpuflags="-mcpu=8540 -mhard-float"
4734             disable altivec
4735             disable dcbzl
4736         ;;
4737     esac
4738
4739 elif enabled sparc; then
4740
4741     case $cpu in
4742         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4743             cpuflags="-mcpu=$cpu"
4744         ;;
4745         ultrasparc*|niagara[234])
4746             cpuflags="-mcpu=$cpu"
4747         ;;
4748     esac
4749
4750 elif enabled x86; then
4751
4752     case $cpu in
4753         i[345]86|pentium)
4754             cpuflags="-march=$cpu"
4755             disable i686
4756             disable mmx
4757         ;;
4758         # targets that do NOT support nopl and conditional mov (cmov)
4759         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4760             cpuflags="-march=$cpu"
4761             disable i686
4762         ;;
4763         # targets that do support nopl and conditional mov (cmov)
4764         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4765         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4766         |amdfam10|barcelona|b[dt]ver*|znver*)
4767             cpuflags="-march=$cpu"
4768             enable i686
4769             enable fast_cmov
4770         ;;
4771         # targets that do support conditional mov but on which it's slow
4772         pentium4|pentium4m|prescott|nocona)
4773             cpuflags="-march=$cpu"
4774             enable i686
4775             disable fast_cmov
4776         ;;
4777     esac
4778
4779 fi
4780
4781 if [ "$cpu" != generic ]; then
4782     add_cflags  $cpuflags
4783     add_asflags $cpuflags
4784     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4785 fi
4786
4787 # compiler sanity check
4788 check_exec <<EOF
4789 int main(void){ return 0; }
4790 EOF
4791 if test "$?" != 0; then
4792     echo "$cc is unable to create an executable file."
4793     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4794         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4795         echo "Only do this if you know what cross compiling means."
4796     fi
4797     die "C compiler test failed."
4798 fi
4799
4800 add_cppflags -D_ISOC99_SOURCE
4801 add_cxxflags -D__STDC_CONSTANT_MACROS
4802 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4803
4804 # some compilers silently accept -std=c11, so we also need to check that the
4805 # version macro is defined properly
4806 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4807     add_cflags -std=c11 ||
4808     check_cflags -std=c99
4809
4810 check_cppflags -D_FILE_OFFSET_BITS=64
4811 check_cppflags -D_LARGEFILE_SOURCE
4812
4813 add_host_cppflags -D_ISOC99_SOURCE
4814 check_host_cflags -std=c99
4815 check_host_cflags -Wall
4816 check_host_cflags $host_cflags_speed
4817
4818 check_64bit(){
4819     arch32=$1
4820     arch64=$2
4821     expr=$3
4822     check_code cc "" "int test[2*($expr) - 1]" &&
4823         subarch=$arch64 || subarch=$arch32
4824     enable $subarch
4825 }
4826
4827 case "$arch" in
4828     aarch64|alpha|ia64)
4829         enabled shared && enable_weak pic
4830     ;;
4831     mips)
4832         check_64bit mips mips64 '_MIPS_SIM > 1'
4833         enabled shared && enable_weak pic
4834     ;;
4835     parisc)
4836         check_64bit parisc parisc64 'sizeof(void *) > 4'
4837         enabled shared && enable_weak pic
4838     ;;
4839     ppc)
4840         check_64bit ppc ppc64 'sizeof(void *) > 4'
4841         enabled shared && enable_weak pic
4842     ;;
4843     s390)
4844         check_64bit s390 s390x 'sizeof(void *) > 4'
4845         enabled shared && enable_weak pic
4846     ;;
4847     sparc)
4848         check_64bit sparc sparc64 'sizeof(void *) > 4'
4849         enabled shared && enable_weak pic
4850     ;;
4851     x86)
4852         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4853         # Treat x32 as x64 for now. Note it also needs pic if shared
4854         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4855             subarch=x86_64 && enable x86_64 && disable x86_32
4856         if enabled x86_64; then
4857             enabled shared && enable_weak pic
4858             objformat=elf64
4859         fi
4860     ;;
4861 esac
4862
4863 # OS specific
4864 case $target_os in
4865     aix)
4866         SHFLAGS=-shared
4867         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4868         enabled shared && add_ldflags -Wl,-brtl
4869         arflags='-Xany -r -c'
4870         ;;
4871     android)
4872         disable symver
4873         enable section_data_rel_ro
4874         SLIB_INSTALL_NAME='$(SLIBNAME)'
4875         SLIB_INSTALL_LINKS=
4876         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4877         ;;
4878     haiku)
4879         prefix_default="/boot/common"
4880         network_extralibs="-lnetwork"
4881         host_extralibs=
4882         ;;
4883     sunos)
4884         SHFLAGS='-shared -Wl,-h,$$(@F)'
4885         enabled x86 && append SHFLAGS -mimpure-text
4886         network_extralibs="-lsocket -lnsl"
4887         add_cppflags -D__EXTENSIONS__
4888         # When using suncc to build, the Solaris linker will mark
4889         # an executable with each instruction set encountered by
4890         # the Solaris assembler.  As our libraries contain their own
4891         # guards for processor-specific code, instead suppress
4892         # generation of the HWCAPS ELF section on Solaris x86 only.
4893         enabled_all suncc x86 &&
4894             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4895             add_ldflags -Wl,-M,mapfile
4896         nm_default='nm -P -g'
4897         version_script='-M'
4898         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4899         ;;
4900     netbsd)
4901         disable symver
4902         oss_indev_extralibs="-lossaudio"
4903         oss_outdev_extralibs="-lossaudio"
4904         enabled gcc || check_ldflags -Wl,-zmuldefs
4905         ;;
4906     openbsd|bitrig)
4907         disable symver
4908         SHFLAGS='-shared'
4909         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4910         SLIB_INSTALL_LINKS=
4911         oss_indev_extralibs="-lossaudio"
4912         oss_outdev_extralibs="-lossaudio"
4913         ;;
4914     dragonfly)
4915         disable symver
4916         ;;
4917     freebsd)
4918         ;;
4919     bsd/os)
4920         add_extralibs -lpoll -lgnugetopt
4921         strip="strip -d"
4922         ;;
4923     darwin)
4924         enabled ppc && add_asflags -force_cpusubtype_ALL
4925         install_name_dir_default='$(SHLIBDIR)'
4926         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4927         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4928         strip="${strip} -x"
4929         add_ldflags -Wl,-dynamic,-search_paths_first
4930         check_cflags -Werror=partial-availability
4931         SLIBSUF=".dylib"
4932         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4933         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4934         enabled x86_64 && objformat="macho64" || objformat="macho32"
4935         enabled_any pic shared x86_64 ||
4936             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4937         check_header dispatch/dispatch.h &&
4938             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4939         if test -n "$sysroot"; then
4940             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4941             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4942         fi
4943         version_script='-exported_symbols_list'
4944         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4945         ;;
4946     msys*)
4947         die "Native MSYS builds are discouraged, please use the MINGW environment."
4948         ;;
4949     mingw32*|mingw64*)
4950         target_os=mingw32
4951         if enabled shared; then
4952             # Cannot build both shared and static libs when using dllexport.
4953             disable static
4954         fi
4955         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4956         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4957         shlibdir_default="$bindir_default"
4958         SLIBPREF=""
4959         SLIBSUF=".dll"
4960         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4961         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4962         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4963         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4964         SLIB_INSTALL_LINKS=
4965         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4966         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4967         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4968         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4969         enabled x86_64 && objformat="win64" || objformat="win32"
4970         ranlib=:
4971         enable dos_paths
4972         check_ldflags -Wl,--nxcompat,--dynamicbase
4973         # Lets work around some stupidity in binutils.
4974         # ld will strip relocations from executables even though we need them
4975         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4976         # however ld then forgets what the entry point should be (oops) so we
4977         # have to manually (re)set it.
4978         if enabled x86_32; then
4979             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4980         elif enabled x86_64; then
4981             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4982             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4983             # Set image base >4GB for extra entropy with HEASLR
4984             add_ldexeflags -Wl,--image-base,0x140000000
4985             append SHFLAGS -Wl,--image-base,0x180000000
4986         fi
4987         ;;
4988     win32|win64)
4989         disable symver
4990         if enabled shared; then
4991             # Link to the import library instead of the normal static library
4992             # for shared libs.
4993             LD_LIB='%.lib'
4994             # Cannot build both shared and static libs with MSVC or icl.
4995             disable static
4996         fi
4997         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4998         shlibdir_default="$bindir_default"
4999         SLIBPREF=""
5000         SLIBSUF=".dll"
5001         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5002         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5003         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5004         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5005         SLIB_INSTALL_LINKS=
5006         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5007         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5008         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5009         enabled x86_64 && objformat="win64" || objformat="win32"
5010         ranlib=:
5011         enable dos_paths
5012         ;;
5013     cygwin*)
5014         target_os=cygwin
5015         shlibdir_default="$bindir_default"
5016         SLIBPREF="cyg"
5017         SLIBSUF=".dll"
5018         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5019         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5020         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5021         SLIB_INSTALL_LINKS=
5022         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5023         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5024         enabled x86_64 && objformat="win64" || objformat="win32"
5025         enable dos_paths
5026         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5027         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5028         ;;
5029     *-dos|freedos|opendos)
5030         network_extralibs="-lsocket"
5031         objformat="coff"
5032         enable dos_paths
5033         add_cppflags -U__STRICT_ANSI__
5034         ;;
5035     linux)
5036         enable section_data_rel_ro
5037         enabled_any arm aarch64 && enable_weak linux_perf
5038         ;;
5039     irix*)
5040         target_os=irix
5041         ranlib="echo ignoring ranlib"
5042         ;;
5043     os/2*)
5044         strip="lxlite -CS"
5045         striptype=""
5046         objformat="aout"
5047         add_cppflags -D_GNU_SOURCE
5048         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5049         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5050         LIBSUF="_s.a"
5051         SLIBPREF=""
5052         SLIBSUF=".dll"
5053         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5054         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5055         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5056             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5057             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5058             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5059             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5060         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5061             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5062         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5063         SLIB_INSTALL_LINKS=
5064         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5065         enable dos_paths
5066         enable_weak os2threads
5067         ;;
5068     gnu/kfreebsd)
5069         add_cppflags -D_BSD_SOURCE
5070         ;;
5071     gnu)
5072         ;;
5073     qnx)
5074         add_cppflags -D_QNX_SOURCE
5075         network_extralibs="-lsocket"
5076         ;;
5077     symbian)
5078         SLIBSUF=".dll"
5079         enable dos_paths
5080         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5081         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5082         add_ldflags -Wl,--target1-abs,--no-undefined \
5083                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5084                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5085         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5086                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5087                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5088         ;;
5089     minix)
5090         ;;
5091     none)
5092         ;;
5093     *)
5094         die "Unknown OS '$target_os'."
5095         ;;
5096 esac
5097
5098 # test if creating links works
5099 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5100 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5101 mkdir "$link_dest"
5102 $ln_s "$link_dest" "$link_name"
5103 touch "$link_dest/test_file"
5104 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5105     # create link to source path
5106     [ -e src ] && rm src
5107     $ln_s "$source_path" src
5108     source_link=src
5109 else
5110     # creating directory links doesn't work
5111     # fall back to using the full source path
5112     source_link="$source_path"
5113 fi
5114 # cleanup
5115 rm -r "$link_dest"
5116 rm -r "$link_name"
5117
5118 # determine libc flavour
5119
5120 probe_libc(){
5121     pfx=$1
5122     pfx_no_=${pfx%_}
5123     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5124     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5125         eval ${pfx}libc_type=uclibc
5126         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5127     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5128         eval ${pfx}libc_type=glibc
5129         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5130     # MinGW headers can be installed on Cygwin, so check for newlib first.
5131     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5132         eval ${pfx}libc_type=newlib
5133         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5134     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5135     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5136         eval ${pfx}libc_type=mingw64
5137         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5138             add_compat msvcrt/snprintf.o
5139             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5140         fi
5141         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5142         eval test \$${pfx_no_}cc_type = "gcc" &&
5143             add_${pfx}cppflags -D__printf__=__gnu_printf__
5144     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5145          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5146         eval ${pfx}libc_type=mingw32
5147         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5148             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5149             die "ERROR: MinGW32 runtime version must be >= 3.15."
5150         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5151         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5152             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5153         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5154             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5155         eval test \$${pfx_no_}cc_type = "gcc" &&
5156             add_${pfx}cppflags -D__printf__=__gnu_printf__
5157     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5158         eval ${pfx}libc_type=msvcrt
5159         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5160             if [ "$pfx" = host_ ]; then
5161                 add_host_cppflags -Dsnprintf=_snprintf
5162             else
5163                 add_compat strtod.o strtod=avpriv_strtod
5164                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5165                                              _snprintf=avpriv_snprintf  \
5166                                              vsnprintf=avpriv_vsnprintf
5167             fi
5168         fi
5169         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5170         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5171         # 0x601 by default unless something else is set by the user.
5172         # This can easily lead to us detecting functions only present
5173         # in such new versions and producing binaries requiring windows 7.0.
5174         # Therefore explicitly set the default to XP unless the user has
5175         # set something else on the command line.
5176         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5177         # family. For these cases, configure is free to use any functions
5178         # found in the SDK headers by default. (Alternatively, we could force
5179         # _WIN32_WINNT to 0x0602 in that case.)
5180         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5181             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5182 #ifdef WINAPI_FAMILY
5183 #include <winapifamily.h>
5184 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5185 #error not desktop
5186 #endif
5187 #endif
5188 EOF
5189         if [ "$pfx" = "" ]; then
5190             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5191             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5192         fi
5193     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5194         eval ${pfx}libc_type=klibc
5195     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5196         eval ${pfx}libc_type=bionic
5197     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5198         eval ${pfx}libc_type=solaris
5199         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5200     fi
5201     check_${pfx}cc <<EOF
5202 #include <time.h>
5203 void *v = localtime_r;
5204 EOF
5205 test "$?" != 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
5206 #include <time.h>
5207 void *v = localtime_r;
5208 EOF
5209
5210     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5211 }
5212
5213 probe_libc
5214 probe_libc host_
5215
5216 # hacks for compiler/libc/os combinations
5217
5218 case $libc_type in
5219     bionic)
5220         add_compat strtod.o strtod=avpriv_strtod
5221         ;;
5222 esac
5223
5224 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5225     add_cppflags '-I\$(SRC_PATH)/compat/float'
5226
5227 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5228
5229 set_default libdir
5230 : ${shlibdir_default:="$libdir"}
5231 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5232
5233 set_default $PATHS_LIST
5234 set_default nm
5235
5236 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5237
5238 enable_weak_pic() {
5239     disabled pic && return
5240     enable pic
5241     add_cppflags -DPIC
5242     case "$target_os" in
5243     mingw*|cygwin*|win*)
5244         ;;
5245     *)
5246         add_cflags -fPIC
5247         add_asflags -fPIC
5248         ;;
5249     esac
5250 }
5251
5252 enabled pic && enable_weak_pic
5253
5254 check_cc <<EOF || die "Symbol mangling check failed."
5255 int ff_extern;
5256 EOF
5257 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5258 extern_prefix=${sym%%ff_extern*}
5259
5260 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5261
5262 _restrict=
5263 for restrict_keyword in restrict __restrict__ __restrict; do
5264     check_cc <<EOF && _restrict=$restrict_keyword && break
5265 void foo(char * $restrict_keyword p);
5266 EOF
5267 done
5268
5269 check_cc <<EOF && enable pragma_deprecated
5270 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5271 EOF
5272
5273 check_cc <<EOF || die "endian test failed"
5274 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5275 EOF
5276 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5277
5278 check_cc <<EOF && enable const_nan
5279 #include <math.h>
5280 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5281 EOF
5282
5283 if ! enabled ppc64 || enabled bigendian; then
5284     disable vsx
5285 fi
5286
5287 check_gas() {
5288     log "check_gas using '$as' as AS"
5289     # :vararg is used on aarch64, arm and ppc altivec
5290     check_as <<EOF || return 1
5291 .macro m n, y:vararg=0
5292 \n: .int \y
5293 .endm
5294 m x
5295 EOF
5296     # .altmacro is only used in arm asm
5297     ! enabled arm || check_as <<EOF || return 1
5298 .altmacro
5299 EOF
5300     enable gnu_as
5301     return 0
5302 }
5303
5304 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5305     nogas=:
5306     enabled_any arm aarch64 && nogas=die
5307     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5308     as_noop=-v
5309
5310     case $as_type in
5311         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5312         gcc)  gaspp_as_type=gas ;;
5313         *)    gaspp_as_type=$as_type ;;
5314     esac
5315
5316     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5317
5318     test "${as#*gas-preprocessor.pl}" != "$as" ||
5319     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5320         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5321
5322     if ! check_gas ; then
5323         as=${gas:=$as}
5324         check_gas || \
5325             $nogas "GNU assembler not found, install/update gas-preprocessor"
5326     fi
5327
5328     check_as <<EOF && enable as_func
5329 .func test
5330 .endfunc
5331 EOF
5332 fi
5333
5334 check_inline_asm inline_asm_labels '"1:\n"'
5335
5336 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5337
5338 if enabled aarch64; then
5339     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5340     # internal assembler in clang 3.3 does not support this instruction
5341     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5342     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5343
5344     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5345
5346 elif enabled alpha; then
5347
5348     check_cflags -mieee
5349
5350 elif enabled arm; then
5351
5352     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5353
5354     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5355 float func(float a, float b){ return a+b; }
5356 EOF
5357
5358     enabled thumb && check_cflags -mthumb || check_cflags -marm
5359
5360     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5361         enable vfp_args
5362     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5363         enable vfp_args
5364     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5365         case "${cross_prefix:-$cc}" in
5366             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5367             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5368 __asm__ (".eabi_attribute 28, 1");
5369 int main(void) { return 0; }
5370 EOF
5371         esac
5372         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5373     fi
5374
5375     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5376     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5377     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5378     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5379     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5380     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5381     enabled setend  && check_insn setend  'setend be'
5382
5383     [ $target_os = linux ] || [ $target_os = android ] ||
5384         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5385             $ARCH_EXT_LIST_ARM
5386
5387     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5388
5389     check_as <<EOF && enable as_arch_directive
5390 .arch armv7-a
5391 EOF
5392     check_as <<EOF && enable as_fpu_directive
5393 .fpu neon
5394 EOF
5395
5396     # llvm's integrated assembler supports .object_arch from llvm 3.5
5397     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5398         check_as <<EOF && enable as_object_arch
5399 .object_arch armv4
5400 EOF
5401
5402     # MS armasm fails to assemble our PIC constructs
5403     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5404
5405 elif enabled mips; then
5406
5407     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5408     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5409     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5410
5411     # Enable minimum ISA based on selected options
5412     if enabled mips64; then
5413         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5414         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5415         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5416     else
5417         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5418         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5419         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5420         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5421     fi
5422
5423     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5424     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5425     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5426     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5427     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5428
5429     if enabled bigendian && enabled msa; then
5430         disable msa
5431     fi
5432
5433 elif enabled parisc; then
5434
5435     if enabled gcc; then
5436         case $($cc -dumpversion) in
5437             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5438         esac
5439     fi
5440
5441 elif enabled ppc; then
5442
5443     enable local_aligned
5444
5445     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5446     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5447     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5448     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5449
5450     if enabled altivec; then
5451         check_cflags -maltivec -mabi=altivec
5452
5453         # check if our compiler supports Motorola AltiVec C API
5454         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5455                                  vector signed int v2 = (vector signed int) { 1 };
5456                                  v1 = vec_add(v1, v2);" ||
5457             disable altivec
5458
5459         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5460     fi
5461
5462     if enabled vsx; then
5463         check_cflags -mvsx &&
5464         check_code cc altivec.h "int v[4] = { 0 };
5465                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5466             disable vsx
5467     fi
5468
5469     if enabled power8; then
5470         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5471     fi
5472
5473 elif enabled x86; then
5474
5475     check_builtin rdtsc    intrin.h   "__rdtsc()"
5476     check_builtin mm_empty mmintrin.h "_mm_empty()"
5477
5478     enable local_aligned
5479
5480     # check whether EBP is available on x86
5481     # As 'i' is stored on the stack, this program will crash
5482     # if the base pointer is used to access it because the
5483     # base pointer is cleared in the inline assembly code.
5484     check_exec_crash <<EOF && enable ebp_available
5485 volatile int i=0;
5486 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5487 return i;
5488 EOF
5489
5490     # check whether EBX is available on x86
5491     check_inline_asm ebx_available '""::"b"(0)' &&
5492         check_inline_asm ebx_available '"":::"%ebx"'
5493
5494     # check whether xmm clobbers are supported
5495     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5496
5497     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5498         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5499
5500     # check whether binutils is new enough to compile SSSE3/MMXEXT
5501     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5502     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5503
5504     probe_x86asm(){
5505         x86asmexe_probe=$1
5506         if check_cmd $x86asmexe_probe -v; then
5507             x86asmexe=$x86asmexe_probe
5508             x86asm_type=nasm
5509             x86asm_debug="-g -F dwarf"
5510             X86ASMDEP=
5511             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5512         elif check_cmd $x86asmexe_probe --version; then
5513             x86asmexe=$x86asmexe_probe
5514             x86asm_type=yasm
5515             x86asm_debug="-g dwarf2"
5516             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5517             X86ASM_DEPFLAGS=
5518         fi
5519         check_x86asm "movbe ecx, [5]" && enable x86asm
5520     }
5521
5522     if ! disabled_any asm mmx x86asm; then
5523         disable x86asm
5524         for program in $x86asmexe nasm yasm; do
5525             probe_x86asm $program && break
5526         done
5527         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5528         X86ASMFLAGS="-f $objformat"
5529         enabled pic               && append X86ASMFLAGS "-DPIC"
5530         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5531         case "$objformat" in
5532             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5533         esac
5534
5535         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5536         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5537         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5538         check_x86asm "CPU amdnop" || disable cpunop
5539     fi
5540
5541     case "$cpu" in
5542         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5543             disable fast_clz
5544         ;;
5545     esac
5546
5547 fi
5548
5549 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5550
5551 check_ldflags -Wl,--as-needed
5552 check_ldflags -Wl,-z,noexecstack
5553
5554 if ! disabled network; then
5555     check_func getaddrinfo $network_extralibs
5556     check_func inet_aton $network_extralibs
5557
5558     check_type netdb.h "struct addrinfo"
5559     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5560     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5561     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5562     check_type poll.h "struct pollfd"
5563     check_type netinet/sctp.h "struct sctp_event_subscribe"
5564     check_struct "sys/socket.h" "struct msghdr" msg_flags
5565     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5566     check_type netinet/in.h "struct sockaddr_in6"
5567     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5568     check_type "sys/types.h sys/socket.h" socklen_t
5569
5570     # Prefer arpa/inet.h over winsock2
5571     if check_header arpa/inet.h ; then
5572         check_func closesocket
5573     elif check_header winsock2.h ; then
5574         check_func_headers winsock2.h closesocket -lws2 &&
5575             network_extralibs="-lws2" ||
5576         { check_func_headers winsock2.h closesocket -lws2_32 &&
5577             network_extralibs="-lws2_32"; } || disable winsock2_h network
5578         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5579
5580         check_type ws2tcpip.h socklen_t
5581         check_type ws2tcpip.h "struct addrinfo"
5582         check_type ws2tcpip.h "struct group_source_req"
5583         check_type ws2tcpip.h "struct ip_mreq_source"
5584         check_type ws2tcpip.h "struct ipv6_mreq"
5585         check_type winsock2.h "struct pollfd"
5586         check_struct winsock2.h "struct sockaddr" sa_len
5587         check_type ws2tcpip.h "struct sockaddr_in6"
5588         check_type ws2tcpip.h "struct sockaddr_storage"
5589     else
5590         disable network
5591     fi
5592 fi
5593
5594 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5595 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5596 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5597 check_builtin sarestart signal.h "SA_RESTART"
5598 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5599 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5600 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5601 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5602
5603 case "$custom_allocator" in
5604     jemalloc)
5605         # jemalloc by default does not use a prefix
5606         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5607     ;;
5608     tcmalloc)
5609         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5610         malloc_prefix=tc_
5611     ;;
5612 esac
5613
5614 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5615 check_func  ${malloc_prefix}memalign            && enable memalign
5616 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5617
5618 check_func  access
5619 check_func_headers stdlib.h arc4random
5620 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5621 check_func  fcntl
5622 check_func  fork
5623 check_func  gethrtime
5624 check_func  getopt
5625 check_func  getrusage
5626 check_func  gettimeofday
5627 check_func  isatty
5628 check_func  mkstemp
5629 check_func  mmap
5630 check_func  mprotect
5631 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5632 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5633 check_func  sched_getaffinity
5634 check_func  setrlimit
5635 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5636 check_func  strerror_r
5637 check_func  sysconf
5638 check_func  sysctl
5639 check_func  usleep
5640
5641 check_func_headers conio.h kbhit
5642 check_func_headers io.h setmode
5643 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5644 check_func_headers mach/mach_time.h mach_absolute_time
5645 check_func_headers stdlib.h getenv
5646 check_func_headers sys/stat.h lstat
5647
5648 check_func_headers windows.h GetProcessAffinityMask
5649 check_func_headers windows.h GetProcessTimes
5650 check_func_headers windows.h GetSystemTimeAsFileTime
5651 check_func_headers windows.h LoadLibrary
5652 check_func_headers windows.h MapViewOfFile
5653 check_func_headers windows.h PeekNamedPipe
5654 check_func_headers windows.h SetConsoleTextAttribute
5655 check_func_headers windows.h SetConsoleCtrlHandler
5656 check_func_headers windows.h Sleep
5657 check_func_headers windows.h VirtualAlloc
5658 check_struct windows.h "CONDITION_VARIABLE" Ptr
5659 check_func_headers glob.h glob
5660 enabled xlib &&
5661     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5662
5663 check_header direct.h
5664 check_header dirent.h
5665 check_header dxgidebug.h
5666 check_header dxva.h
5667 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5668 check_header io.h
5669 check_header libcrystalhd/libcrystalhd_if.h
5670 check_header malloc.h
5671 check_header net/udplite.h
5672 check_header poll.h
5673 check_header sys/param.h
5674 check_header sys/resource.h
5675 check_header sys/select.h
5676 check_header sys/time.h
5677 check_header sys/un.h
5678 check_header termios.h
5679 check_header unistd.h
5680 check_header valgrind/valgrind.h
5681 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5682 check_header windows.h
5683 check_header X11/extensions/XvMClib.h
5684 check_header asm/types.h
5685
5686 # it seems there are versions of clang in some distros that try to use the
5687 # gcc headers, which explodes for stdatomic
5688 # so we also check that atomics actually work here
5689 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5690
5691 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5692 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5693 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5694 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5695 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5696
5697 enabled appkit       && check_apple_framework AppKit
5698 enabled audiotoolbox && check_apple_framework AudioToolbox
5699 enabled avfoundation && check_apple_framework AVFoundation
5700 enabled coreimage    && check_apple_framework CoreImage
5701 enabled videotoolbox && check_apple_framework VideoToolbox
5702
5703 check_apple_framework CoreFoundation
5704 check_apple_framework CoreMedia
5705 check_apple_framework CoreVideo
5706
5707 enabled avfoundation && {
5708     disable coregraphics applicationservices
5709     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5710     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5711
5712 enabled videotoolbox && {
5713     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5714     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5715 }
5716
5717 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5718
5719 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5720 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5721 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5722 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5723 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5724
5725 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5726 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5727 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5728 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5729 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5730 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5731 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5732 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5733 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5734
5735 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5736
5737 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5738
5739 if ! disabled w32threads && ! enabled pthreads; then
5740     check_func_headers "windows.h process.h" _beginthreadex &&
5741         enable w32threads || disable w32threads
5742     if ! enabled w32threads && enabled winrt; then
5743         check_func_headers "windows.h" CreateThread &&
5744             enable w32threads || disable w32threads
5745     fi
5746 fi
5747
5748 # check for some common methods of building with pthread support
5749 # do this before the optional library checks as some of them require pthreads
5750 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5751     if check_lib pthreads pthread.h pthread_join   -pthread &&
5752        check_lib pthreads pthread.h pthread_create -pthread; then
5753         add_cflags -pthread
5754     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5755          check_lib pthreads pthread.h pthread_create -pthreads; then
5756         add_cflags -pthreads
5757     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5758          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5759         add_cflags -ldl -pthread
5760     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5761          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5762         :
5763     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5764          check_lib pthreads pthread.h pthread_create -lpthread; then
5765         :
5766     elif check_func pthread_join && check_func pthread_create; then
5767         enable pthreads
5768     fi
5769     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5770
5771     if enabled pthreads; then
5772         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5773         check_func pthread_cancel $pthreads_extralibs
5774     fi
5775 fi
5776
5777 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5778 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5779 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5780
5781 # On some systems dynamic loading requires no extra linker flags
5782 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5783
5784 check_lib libm math.h sin -lm
5785
5786 atan2f_args=2
5787 copysign_args=2
5788 hypot_args=2
5789 ldexpf_args=2
5790 powf_args=2
5791
5792 for func in $MATH_FUNCS; do
5793     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5794 done
5795
5796 for func in $COMPLEX_FUNCS; do
5797     eval check_complexfunc $func \${${func}_args:-1}
5798 done
5799
5800 # these are off by default, so fail if requested and not available
5801 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5802 enabled cuvid             && { enabled cuda ||
5803                                die "ERROR: CUVID requires CUDA"; }
5804 enabled nvdec             && { enabled cuda ||
5805                                die "ERROR: NVDEC hwaccel requires CUDA"; }
5806 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5807 enabled decklink          && { require_header DeckLinkAPI.h &&
5808                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5809 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5810 enabled frei0r            && require_header frei0r.h
5811 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5812 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5813 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5814 enabled ladspa            && require_header ladspa.h
5815 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5816 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5817 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5818 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5819 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5820                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5821                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5822 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5823 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5824 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5825 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5826                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5827                                  warn "using libfdk without pkg-config"; } }
5828 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"
5829 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5830 enabled fontconfig        && enable libfontconfig
5831 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5832 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5833 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5834 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5835                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5836 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5837                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5838                                done || die "ERROR: libgsm not found"; }
5839 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5840 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5841 # While it may appear that require is being used as a pkg-config
5842 # fallback for libmfx, it is actually being used to detect a different
5843 # installation route altogether.  If libmfx is installed via the Intel
5844 # Media SDK or Intel Media Server Studio, these don't come with
5845 # pkg-config support.  Instead, users should make sure that the build
5846 # can find the libraries and headers through other means.
5847 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5848                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5849 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5850 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5851 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5852 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5853                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5854                                die "ERROR: libnpp not found"; }
5855 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5856 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5857 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5858                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5859                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5860                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5861 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5862 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5863                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5864 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5865 enabled libopus           && {
5866     enabled libopus_decoder && {
5867         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5868     }
5869     enabled libopus_encoder && {
5870         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5871     }
5872 }
5873 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5874 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5875 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5876 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5877 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5878 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5879                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5880 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5881 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5882 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5883 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5884 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5885 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5886 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5887                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5888                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5889 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5890 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5891 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5892 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5893 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5894                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5895
5896 enabled libvpx            && {
5897     enabled libvpx_vp8_decoder && {
5898         check_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5899             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5900                 die "ERROR: libvpx decoder version must be >=0.9.1";
5901     }
5902     enabled libvpx_vp8_encoder && {
5903         check_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5904             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5905                 die "ERROR: libvpx encoder version must be >=0.9.7";
5906     }
5907     enabled libvpx_vp9_decoder && {
5908         check_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5909             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5910     }
5911     enabled libvpx_vp9_encoder && {
5912         check_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5913             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5914     }
5915     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5916         die "libvpx enabled but no supported decoders found"
5917     fi
5918 }
5919
5920 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5921 enabled libwebp           && {
5922     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5923     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5924 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5925                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5926                                  warn "using libx264 without pkg-config"; } } &&
5927                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5928                              { check_cpp_condition x264.h "X264_MPEG2" &&
5929                                enable libx262; }
5930 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5931                              require_cpp_condition x265.h "X265_BUILD >= 68"
5932 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5933 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5934 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
5935 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5936 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5937                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5938                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5939 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5940 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5941 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5942                                { ! enabled cross_compile &&
5943                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5944                                  add_ldflags -L/opt/vc/lib/ &&
5945                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5946                                die "ERROR: mmal not found" &&
5947                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5948 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5949                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5950                                die "ERROR: openal not found"; } &&
5951                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5952                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5953 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5954                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5955                                die "ERROR: opencl not found"; } &&
5956                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5957                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5958                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5959 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5960                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5961                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5962                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5963                                die "ERROR: opengl not found."
5964                              }
5965 enabled omx               && require_header OMX_Core.h
5966 enabled omx_rpi           && { check_header OMX_Core.h ||
5967                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5968                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5969 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5970                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5971                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5972                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5973                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5974                                die "ERROR: openssl not found"; }
5975 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
5976                                  die "ERROR : Rockchip MPP was not found."; } &&
5977                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
5978                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
5979                                { enabled libdrm ||
5980                                  die "ERROR: rkmpp requires --enable-libdrm"; }
5981                              }
5982
5983 if enabled gcrypt; then
5984     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5985     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5986         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5987         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5988         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5989             die "ERROR: gcrypt not found"
5990         add_cflags $gcrypt_cflags
5991     else
5992         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5993     fi
5994 fi
5995
5996 if enabled sdl2; then
5997     SDL2_CONFIG="${cross_prefix}sdl2-config"
5998     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
5999         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6000             disable sdl2
6001     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6002         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6003         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6004         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6005         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6006         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6007             enable sdl2
6008     fi
6009     if test $target_os = "mingw32"; then
6010         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6011     fi
6012 fi
6013
6014 if enabled decklink; then
6015     case $target_os in
6016         mingw32*|mingw64*|win32|win64)
6017             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6018             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6019             ;;
6020     esac
6021 fi
6022
6023 enabled securetransport &&
6024     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6025     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6026         disable securetransport
6027
6028 enabled securetransport &&
6029     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6030
6031 enabled schannel &&
6032     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6033     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6034     schannel_extralibs="-lsecur32" ||
6035         disable schannel
6036
6037 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6038 enabled makeinfo \
6039     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6040     && enable makeinfo_html || disable makeinfo_html
6041 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6042 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6043 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6044 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6045
6046 # check V4L2 codecs available in the API
6047 check_header linux/fb.h
6048 check_header linux/videodev2.h
6049 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6050 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6051 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6052 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6053 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6054 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6055 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6056 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6057 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6058 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6059 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6060
6061 check_header sys/videoio.h
6062 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6063
6064 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6065 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6066 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6067 # w32api 3.12 had it defined wrong
6068 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6069
6070 check_type "dshow.h" IBaseFilter
6071
6072 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6073 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6074     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6075     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6076     check_header "dev/ic/bt8xx.h"
6077
6078 if check_struct sys/soundcard.h audio_buf_info bytes; then
6079     enable_sanitized sys/soundcard.h
6080 else
6081     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6082     #include <sys/soundcard.h>
6083     audio_buf_info abc;
6084 EOF
6085 fi
6086
6087 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6088     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6089
6090 enabled libjack &&
6091     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6092
6093 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6094
6095 if enabled libcdio; then
6096     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6097     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6098     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6099     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6100     die "ERROR: No usable libcdio/cdparanoia found"
6101 fi
6102
6103 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6104     disable libxcb_shm libxcb_shape libxcb_xfixes
6105
6106 if enabled libxcb; then
6107     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6108     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6109     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6110 fi
6111
6112 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6113
6114 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6115 # the desktop api partition
6116 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6117 #ifdef WINAPI_FAMILY
6118 #include <winapifamily.h>
6119 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6120 #error desktop, not uwp
6121 #else
6122 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6123 #endif
6124 #else
6125 #error no family set
6126 #endif
6127 EOF
6128
6129 enabled vaapi &&
6130     check_lib vaapi va/va.h vaInitialize -lva
6131
6132 enabled vaapi &&
6133     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6134     disable vaapi
6135
6136 enabled vaapi &&
6137     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6138
6139 enabled vaapi &&
6140     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6141
6142 enabled vaapi &&
6143     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6144     enable vaapi_1
6145
6146 enabled vdpau &&
6147     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6148     disable vdpau
6149
6150 enabled vdpau &&
6151     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6152
6153 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6154
6155 if enabled x86; then
6156     case $target_os in
6157         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6158             ;;
6159         *)
6160             disable cuda cuvid nvdec nvenc
6161             ;;
6162     esac
6163 else
6164     disable cuda cuvid nvdec nvenc
6165 fi
6166
6167 enabled nvenc &&
6168     check_cc -I$source_path <<EOF || disable nvenc
6169 #include "compat/nvenc/nvEncodeAPI.h"
6170 NV_ENCODE_API_FUNCTION_LIST flist;
6171 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6172 int main(void) { return 0; }
6173 EOF
6174
6175 # Funny iconv installations are not unusual, so check it after all flags have been set
6176 if enabled libc_iconv; then
6177     check_func_headers iconv.h iconv
6178 elif enabled iconv; then
6179     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6180 fi
6181
6182 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6183
6184 # add some useful compiler flags if supported
6185 check_cflags -Wdeclaration-after-statement
6186 check_cflags -Wall
6187 check_cflags -Wdisabled-optimization
6188 check_cflags -Wpointer-arith
6189 check_cflags -Wredundant-decls
6190 check_cflags -Wwrite-strings
6191 check_cflags -Wtype-limits
6192 check_cflags -Wundef
6193 check_cflags -Wmissing-prototypes
6194 check_cflags -Wno-pointer-to-int-cast
6195 check_cflags -Wstrict-prototypes
6196 check_cflags -Wempty-body
6197
6198 if enabled extra_warnings; then
6199     check_cflags -Wcast-qual
6200     check_cflags -Wextra
6201     check_cflags -Wpedantic
6202 fi
6203
6204 check_disable_warning(){
6205     warning_flag=-W${1#-Wno-}
6206     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6207 }
6208
6209 test_cflags -Werror=unused-command-line-argument &&
6210     append unknown_warning_flags "-Werror=unused-command-line-argument"
6211 test_cflags -Werror=unknown-warning-option &&
6212     append unknown_warning_flags "-Werror=unknown-warning-option"
6213
6214 check_disable_warning -Wno-parentheses
6215 check_disable_warning -Wno-switch
6216 check_disable_warning -Wno-format-zero-length
6217 check_disable_warning -Wno-pointer-sign
6218 check_disable_warning -Wno-unused-const-variable
6219 check_disable_warning -Wno-bool-operation
6220
6221 check_disable_warning_headers(){
6222     warning_flag=-W${1#-Wno-}
6223     test_cflags $warning_flag && add_cflags_headers $1
6224 }
6225
6226 check_disable_warning_headers -Wno-deprecated-declarations
6227 check_disable_warning_headers -Wno-unused-variable
6228
6229 check_cc <<EOF && enable blocks_extension
6230 void (^block)(void);
6231 EOF
6232
6233 # add some linker flags
6234 check_ldflags -Wl,--warn-common
6235 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6236 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6237 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6238
6239 # add some strip flags
6240 check_stripflags -x
6241
6242 enabled neon_clobber_test &&
6243     check_ldflags -Wl,--wrap,avcodec_open2              \
6244                   -Wl,--wrap,avcodec_decode_audio4      \
6245                   -Wl,--wrap,avcodec_decode_video2      \
6246                   -Wl,--wrap,avcodec_decode_subtitle2   \
6247                   -Wl,--wrap,avcodec_encode_audio2      \
6248                   -Wl,--wrap,avcodec_encode_video2      \
6249                   -Wl,--wrap,avcodec_encode_subtitle    \
6250                   -Wl,--wrap,avcodec_send_packet        \
6251                   -Wl,--wrap,avcodec_receive_packet     \
6252                   -Wl,--wrap,avcodec_send_frame         \
6253                   -Wl,--wrap,avcodec_receive_frame      \
6254                   -Wl,--wrap,swr_convert                \
6255                   -Wl,--wrap,avresample_convert ||
6256     disable neon_clobber_test
6257
6258 enabled xmm_clobber_test &&
6259     check_ldflags -Wl,--wrap,avcodec_open2              \
6260                   -Wl,--wrap,avcodec_decode_audio4      \
6261                   -Wl,--wrap,avcodec_decode_video2      \
6262                   -Wl,--wrap,avcodec_decode_subtitle2   \
6263                   -Wl,--wrap,avcodec_encode_audio2      \
6264                   -Wl,--wrap,avcodec_encode_video2      \
6265                   -Wl,--wrap,avcodec_encode_subtitle    \
6266                   -Wl,--wrap,avcodec_send_packet        \
6267                   -Wl,--wrap,avcodec_receive_packet     \
6268                   -Wl,--wrap,avcodec_send_frame         \
6269                   -Wl,--wrap,avcodec_receive_frame      \
6270                   -Wl,--wrap,swr_convert                \
6271                   -Wl,--wrap,avresample_convert         \
6272                   -Wl,--wrap,sws_scale ||
6273     disable xmm_clobber_test
6274
6275 check_ld "cc" <<EOF && enable proper_dce
6276 extern const int array[512];
6277 static inline int func(void) { return array[0]; }
6278 int main(void) { return 0; }
6279 EOF
6280
6281 if enabled proper_dce; then
6282     echo "X { local: *; };" > $TMPV
6283     if test_ldflags -Wl,${version_script},$TMPV; then
6284         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6285         quotes='""'
6286         check_cc <<EOF && enable symver_asm_label
6287 void ff_foo(void) __asm__ ("av_foo@VERSION");
6288 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6289 EOF
6290         check_cc <<EOF && enable symver_gnu_asm
6291 __asm__(".symver ff_foo,av_foo@VERSION");
6292 void ff_foo(void) {}
6293 EOF
6294     fi
6295 fi
6296
6297 if [ -z "$optflags" ]; then
6298     if enabled small; then
6299         optflags=$cflags_size
6300     elif enabled optimizations; then
6301         optflags=$cflags_speed
6302     else
6303         optflags=$cflags_noopt
6304     fi
6305 fi
6306
6307 if [ -z "$nvccflags" ]; then
6308     nvccflags=$nvccflags_default
6309 fi
6310
6311 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6312     nvccflags="$nvccflags -m64"
6313 else
6314     nvccflags="$nvccflags -m32"
6315 fi
6316
6317 check_optflags(){
6318     check_cflags "$@"
6319     enabled lto && check_ldflags "$@"
6320 }
6321
6322 check_optflags $optflags
6323 check_optflags -fno-math-errno
6324 check_optflags -fno-signed-zeros
6325
6326 if enabled lto; then
6327     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6328     check_cflags  -flto
6329     check_ldflags -flto $cpuflags
6330     disable inline_asm_direct_symbol_refs
6331 fi
6332
6333 enabled ftrapv && check_cflags -ftrapv
6334
6335 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6336 int x;
6337 EOF
6338
6339
6340 if enabled icc; then
6341     # Just warnings, no remarks
6342     check_cflags -w1
6343     # -wd: Disable following warnings
6344     # 144, 167, 556: -Wno-pointer-sign
6345     # 188: enumerated type mixed with another type
6346     # 1292: attribute "foo" ignored
6347     # 1419: external declaration in primary source file
6348     # 10006: ignoring unknown option -fno-signed-zeros
6349     # 10148: ignoring unknown option -Wno-parentheses
6350     # 10156: ignoring option '-W'; no argument required
6351     # 13200: No EMMS instruction before call to function
6352     # 13203: No EMMS instruction before return from function
6353     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6354     # 11030: Warning unknown option --as-needed
6355     # 10156: ignoring option '-export'; no argument required
6356     check_ldflags -wd10156,11030
6357     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6358     enable ebp_available
6359     # The test above does not test linking
6360     enabled lto && disable symver_asm_label
6361     if enabled x86_32; then
6362         icc_version=$($cc -dumpversion)
6363         test ${icc_version%%.*} -ge 11 &&
6364             check_cflags -falign-stack=maintain-16-byte ||
6365             disable aligned_stack
6366     fi
6367 elif enabled gcc; then
6368     check_optflags -fno-tree-vectorize
6369     check_cflags -Werror=format-security
6370     check_cflags -Werror=implicit-function-declaration
6371     check_cflags -Werror=missing-prototypes
6372     check_cflags -Werror=return-type
6373     check_cflags -Werror=vla
6374     check_cflags -Wformat
6375     check_cflags -fdiagnostics-color=auto
6376     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6377 elif enabled llvm_gcc; then
6378     check_cflags -mllvm -stack-alignment=16
6379 elif enabled clang; then
6380     check_cflags -mllvm -stack-alignment=16
6381     check_cflags -mstack-alignment=16
6382     check_cflags -Qunused-arguments
6383     check_cflags -Werror=implicit-function-declaration
6384     check_cflags -Werror=missing-prototypes
6385     check_cflags -Werror=return-type
6386 elif enabled cparser; then
6387     add_cflags -Wno-missing-variable-declarations
6388     add_cflags -Wno-empty-statement
6389 elif enabled armcc; then
6390     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6391     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6392     # 2523: use of inline assembly is deprecated
6393     add_cflags -W${armcc_opt},--diag_suppress=2523
6394     add_cflags -W${armcc_opt},--diag_suppress=1207
6395     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6396     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6397     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6398     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6399 elif enabled pathscale; then
6400     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6401     disable inline_asm
6402 elif enabled_any msvc icl; then
6403     enabled x86_32 && disable aligned_stack
6404     enabled_all x86_32 debug && add_cflags -Oy-
6405     enabled debug && add_ldflags -debug
6406     enable pragma_deprecated
6407     if enabled icl; then
6408         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6409         # (correctly) on icl 13.x.
6410         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6411             add_cflags -Qansi-alias
6412         # Some inline asm is not compilable in debug
6413         if enabled debug; then
6414             disable ebp_available
6415             disable ebx_available
6416         fi
6417     fi
6418     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6419     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6420     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6421     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6422     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6423     # MSVC 2013 and newer can handle it fine.
6424     # If this declspec fails, force including stdlib.h before the restrict redefinition
6425     # happens in config.h.
6426     if [ $_restrict != restrict ]; then
6427         check_cc <<EOF || add_cflags -FIstdlib.h
6428 __declspec($_restrict) void* foo(int);
6429 EOF
6430     fi
6431     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6432     # Issue has been fixed in MSVC v19.00.24218.
6433     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6434         check_cflags -d2SSAOptimizer-
6435     # enable utf-8 source processing on VS2015 U2 and newer
6436     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6437         add_cflags -utf-8
6438 fi
6439
6440 for pfx in "" host_; do
6441     varname=${pfx%_}cc_type
6442     eval "type=\$$varname"
6443     if [ "$type" = "msvc" ]; then
6444         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6445 static inline int foo(int a) { return a; }
6446 EOF
6447     fi
6448 done
6449
6450 case $as_type in
6451     clang)
6452         add_asflags -Qunused-arguments
6453     ;;
6454 esac
6455
6456 case $ld_type in
6457     clang)
6458         check_ldflags -Qunused-arguments
6459     ;;
6460 esac
6461
6462 enable frame_thread_encoder
6463
6464 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6465
6466 check_deps $CONFIG_LIST       \
6467            $CONFIG_EXTRA      \
6468            $HAVE_LIST         \
6469            $ALL_COMPONENTS    \
6470
6471 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"
6472
6473
6474 if test $target_os = "haiku"; then
6475     disable memalign
6476     disable posix_memalign
6477 fi
6478
6479 flatten_extralibs(){
6480     unset nested_entries
6481     list_name=$1
6482     eval list=\$${1}
6483     for entry in $list; do
6484         entry_copy=$entry
6485         resolve entry_copy
6486         append nested_entries $(filter '*_extralibs' $entry_copy)
6487         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6488         eval $entry="\$flat_entries"
6489     done
6490     append $list_name "$nested_entries"
6491
6492     resolve nested_entries
6493     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6494         flatten_extralibs $list_name
6495     fi
6496 }
6497
6498 flatten_extralibs_wrapper(){
6499     list_name=$1
6500     flatten_extralibs $list_name
6501     unique $list_name
6502     resolve $list_name
6503     eval $list_name=\$\(\$ldflags_filter \$$list_name\)
6504     eval printf \''%s'\' \""\$$list_name"\"
6505 }
6506
6507 for linkunit in $LIBRARY_LIST; do
6508     unset current_extralibs
6509     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6510     for comp in ${components}; do
6511         enabled $comp || continue
6512         comp_extralibs="${comp}_extralibs"
6513         append current_extralibs $comp_extralibs
6514     done
6515     eval prepend ${linkunit}_extralibs $current_extralibs
6516 done
6517
6518 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6519     eval ${linkunit}_extralibs=\$\(flatten_extralibs_wrapper ${linkunit}_extralibs\)
6520 done
6521
6522 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6523
6524 for thread in $THREADS_LIST; do
6525     if enabled $thread; then
6526         test -n "$thread_type" &&
6527             die "ERROR: Only one thread type must be selected." ||
6528             thread_type="$thread"
6529     fi
6530 done
6531
6532 if disabled stdatomic; then
6533     if enabled atomics_gcc; then
6534         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6535     elif enabled atomics_win32; then
6536         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6537     elif enabled atomics_suncc; then
6538         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6539     elif enabled pthreads; then
6540         add_compat atomics/pthread/stdatomic.o
6541         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6542     else
6543         enabled threads && die "Threading is enabled, but no atomics are available"
6544         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6545     fi
6546 fi
6547
6548 # Check if requested libraries were found.
6549 for lib in $AUTODETECT_LIBS; do
6550     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6551 done
6552
6553 enabled zlib && add_cppflags -DZLIB_CONST
6554
6555 # conditional library dependencies, in linking order
6556 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6557 enabled afir_filter         && prepend avfilter_deps "avcodec"
6558 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6559 enabled aresample_filter    && prepend avfilter_deps "swresample"
6560 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6561 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6562 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6563 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6564 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6565 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6566 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6567 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6568 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6569 enabled pan_filter          && prepend avfilter_deps "swresample"
6570 enabled pp_filter           && prepend avfilter_deps "postproc"
6571 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6572 enabled resample_filter && prepend avfilter_deps "avresample"
6573 enabled sab_filter          && prepend avfilter_deps "swscale"
6574 enabled scale_filter    && prepend avfilter_deps "swscale"
6575 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6576 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6577 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6578 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6579 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6580 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6581 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6582 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6583 enabled spp_filter          && prepend avfilter_deps "avcodec"
6584 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6585 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6586 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6587
6588 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6589
6590 #FIXME
6591 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6592
6593 enabled opus_decoder    && prepend avcodec_deps "swresample"
6594
6595 expand_deps(){
6596     lib_deps=${1}_deps
6597     eval "deps=\$$lib_deps"
6598     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6599     unique $lib_deps
6600 }
6601
6602 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6603 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6604
6605 map 'expand_deps $v' $LIBRARY_LIST
6606
6607 license="LGPL version 2.1 or later"
6608 if enabled nonfree; then
6609     license="nonfree and unredistributable"
6610 elif enabled gplv3; then
6611     license="GPL version 3 or later"
6612 elif enabled lgplv3; then
6613     license="LGPL version 3 or later"
6614 elif enabled gpl; then
6615     license="GPL version 2 or later"
6616 fi
6617
6618 if test "$quiet" != "yes"; then
6619
6620 echo "install prefix            $prefix"
6621 echo "source path               $source_path"
6622 echo "C compiler                $cc"
6623 echo "C library                 $libc_type"
6624 if test "$host_cc" != "$cc"; then
6625     echo "host C compiler           $host_cc"
6626     echo "host C library            $host_libc_type"
6627 fi
6628 echo "ARCH                      $arch ($cpu)"
6629 if test "$build_suffix" != ""; then
6630     echo "build suffix              $build_suffix"
6631 fi
6632 if test "$progs_suffix" != ""; then
6633     echo "progs suffix              $progs_suffix"
6634 fi
6635 if test "$extra_version" != ""; then
6636     echo "version string suffix     $extra_version"
6637 fi
6638 echo "big-endian                ${bigendian-no}"
6639 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6640 if enabled x86; then
6641     echo "standalone assembly       ${x86asm-no}"
6642     echo "x86 assembler             ${x86asmexe}"
6643     echo "MMX enabled               ${mmx-no}"
6644     echo "MMXEXT enabled            ${mmxext-no}"
6645     echo "3DNow! enabled            ${amd3dnow-no}"
6646     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6647     echo "SSE enabled               ${sse-no}"
6648     echo "SSSE3 enabled             ${ssse3-no}"
6649     echo "AESNI enabled             ${aesni-no}"
6650     echo "AVX enabled               ${avx-no}"
6651     echo "AVX2 enabled              ${avx2-no}"
6652     echo "XOP enabled               ${xop-no}"
6653     echo "FMA3 enabled              ${fma3-no}"
6654     echo "FMA4 enabled              ${fma4-no}"
6655     echo "i686 features enabled     ${i686-no}"
6656     echo "CMOV is fast              ${fast_cmov-no}"
6657     echo "EBX available             ${ebx_available-no}"
6658     echo "EBP available             ${ebp_available-no}"
6659 fi
6660 if enabled aarch64; then
6661     echo "NEON enabled              ${neon-no}"
6662     echo "VFP enabled               ${vfp-no}"
6663 fi
6664 if enabled arm; then
6665     echo "ARMv5TE enabled           ${armv5te-no}"
6666     echo "ARMv6 enabled             ${armv6-no}"
6667     echo "ARMv6T2 enabled           ${armv6t2-no}"
6668     echo "VFP enabled               ${vfp-no}"
6669     echo "NEON enabled              ${neon-no}"
6670     echo "THUMB enabled             ${thumb-no}"
6671 fi
6672 if enabled mips; then
6673     echo "MIPS FPU enabled          ${mipsfpu-no}"
6674     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6675     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6676     echo "MIPS MSA enabled          ${msa-no}"
6677     echo "LOONGSON MMI enabled      ${mmi-no}"
6678 fi
6679 if enabled ppc; then
6680     echo "AltiVec enabled           ${altivec-no}"
6681     echo "VSX enabled               ${vsx-no}"
6682     echo "POWER8 enabled            ${power8-no}"
6683     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6684     echo "dcbzl available           ${dcbzl-no}"
6685 fi
6686 echo "debug symbols             ${debug-no}"
6687 echo "strip symbols             ${stripping-no}"
6688 echo "optimize for size         ${small-no}"
6689 echo "optimizations             ${optimizations-no}"
6690 echo "static                    ${static-no}"
6691 echo "shared                    ${shared-no}"
6692 echo "postprocessing support    ${postproc-no}"
6693 echo "network support           ${network-no}"
6694 echo "threading support         ${thread_type-no}"
6695 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6696 echo "texi2html enabled         ${texi2html-no}"
6697 echo "perl enabled              ${perl-no}"
6698 echo "pod2man enabled           ${pod2man-no}"
6699 echo "makeinfo enabled          ${makeinfo-no}"
6700 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6701 test -n "$random_seed" &&
6702     echo "random seed               ${random_seed}"
6703 echo
6704
6705 echo "External libraries:"
6706 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6707 echo
6708
6709 echo "External libraries providing hardware acceleration:"
6710 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6711 echo
6712
6713 echo "Libraries:"
6714 print_enabled '' $LIBRARY_LIST | print_in_columns
6715 echo
6716
6717 echo "Programs:"
6718 print_enabled '' $PROGRAM_LIST | print_in_columns
6719 echo
6720
6721 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6722     echo "Enabled ${type}s:"
6723     eval list=\$$(toupper $type)_LIST
6724     print_enabled '_*' $list | print_in_columns
6725     echo
6726 done
6727
6728 if test -n "$ignore_tests"; then
6729     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6730     echo "Ignored FATE tests:"
6731     echo $ignore_tests | print_in_columns
6732     echo
6733 fi
6734
6735 echo "License: $license"
6736
6737 fi # test "$quiet" != "yes"
6738
6739 if test -n "$WARNINGS"; then
6740     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6741     enabled fatal_warnings && exit 1
6742 fi
6743
6744 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6745
6746 esc(){
6747     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6748 }
6749
6750 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6751
6752 enabled stripping || strip="echo skipping strip"
6753 enabled stripping || striptype=""
6754
6755 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6756
6757 cat > ffbuild/config.mak <<EOF
6758 # Automatically generated by configure - do not modify!
6759 ifndef FFMPEG_CONFIG_MAK
6760 FFMPEG_CONFIG_MAK=1
6761 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6762 prefix=$prefix
6763 LIBDIR=\$(DESTDIR)$libdir
6764 SHLIBDIR=\$(DESTDIR)$shlibdir
6765 INCDIR=\$(DESTDIR)$incdir
6766 BINDIR=\$(DESTDIR)$bindir
6767 DATADIR=\$(DESTDIR)$datadir
6768 DOCDIR=\$(DESTDIR)$docdir
6769 MANDIR=\$(DESTDIR)$mandir
6770 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6771 INSTALL_NAME_DIR=$install_name_dir
6772 SRC_PATH=$source_path
6773 SRC_LINK=$source_link
6774 ifndef MAIN_MAKEFILE
6775 SRC_PATH:=\$(SRC_PATH:.%=..%)
6776 endif
6777 CC_IDENT=$cc_ident
6778 ARCH=$arch
6779 INTRINSICS=$intrinsics
6780 EXTERN_PREFIX=$extern_prefix
6781 CC=$cc
6782 CXX=$cxx
6783 AS=$as
6784 OBJCC=$objcc
6785 LD=$ld
6786 DEPCC=$dep_cc
6787 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6788 DEPAS=$as
6789 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6790 X86ASM=$x86asmexe
6791 DEPX86ASM=$x86asmexe
6792 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6793 AR=$ar
6794 ARFLAGS=$arflags
6795 AR_O=$ar_o
6796 AR_CMD=$ar
6797 NM_CMD=$nm
6798 RANLIB=$ranlib
6799 STRIP=$strip
6800 STRIPTYPE=$striptype
6801 NVCC=$nvcc
6802 CP=cp -p
6803 LN_S=$ln_s
6804 CPPFLAGS=$CPPFLAGS
6805 CFLAGS=$CFLAGS
6806 CXXFLAGS=$CXXFLAGS
6807 OBJCFLAGS=$OBJCFLAGS
6808 ASFLAGS=$ASFLAGS
6809 NVCCFLAGS=$nvccflags
6810 AS_C=$AS_C
6811 AS_O=$AS_O
6812 OBJCC_C=$OBJCC_C
6813 OBJCC_E=$OBJCC_E
6814 OBJCC_O=$OBJCC_O
6815 CC_C=$CC_C
6816 CC_E=$CC_E
6817 CC_O=$CC_O
6818 CXX_C=$CXX_C
6819 CXX_O=$CXX_O
6820 NVCC_C=$NVCC_C
6821 NVCC_O=$NVCC_O
6822 LD_O=$LD_O
6823 X86ASM_O=$X86ASM_O
6824 LD_LIB=$LD_LIB
6825 LD_PATH=$LD_PATH
6826 WINDRES=$windres
6827 DEPWINDRES=$dep_cc
6828 DOXYGEN=$doxygen
6829 LDFLAGS=$LDFLAGS
6830 LDEXEFLAGS=$LDEXEFLAGS
6831 LDSOFLAGS=$LDSOFLAGS
6832 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6833 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6834 X86ASMFLAGS=$X86ASMFLAGS
6835 BUILDSUF=$build_suffix
6836 PROGSSUF=$progs_suffix
6837 FULLNAME=$FULLNAME
6838 LIBPREF=$LIBPREF
6839 LIBSUF=$LIBSUF
6840 LIBNAME=$LIBNAME
6841 SLIBPREF=$SLIBPREF
6842 SLIBSUF=$SLIBSUF
6843 EXESUF=$EXESUF
6844 EXTRA_VERSION=$extra_version
6845 CCDEP=$CCDEP
6846 CXXDEP=$CXXDEP
6847 CCDEP_FLAGS=$CCDEP_FLAGS
6848 ASDEP=$ASDEP
6849 ASDEP_FLAGS=$ASDEP_FLAGS
6850 X86ASMDEP=$X86ASMDEP
6851 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6852 CC_DEPFLAGS=$CC_DEPFLAGS
6853 AS_DEPFLAGS=$AS_DEPFLAGS
6854 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6855 HOSTCC=$host_cc
6856 HOSTLD=$host_ld
6857 HOSTCFLAGS=$host_cflags
6858 HOSTCPPFLAGS=$host_cppflags
6859 HOSTEXESUF=$HOSTEXESUF
6860 HOSTLDFLAGS=$host_ldflags
6861 HOSTEXTRALIBS=$host_extralibs
6862 DEPHOSTCC=$host_cc
6863 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6864 HOSTCCDEP=$HOSTCCDEP
6865 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6866 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6867 HOSTCC_C=$HOSTCC_C
6868 HOSTCC_O=$HOSTCC_O
6869 HOSTLD_O=$HOSTLD_O
6870 TARGET_EXEC=$target_exec $target_exec_args
6871 TARGET_PATH=$target_path
6872 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6873 CFLAGS-ffplay=${sdl2_cflags}
6874 CFLAGS_HEADERS=$CFLAGS_HEADERS
6875 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6876 EXTRALIBS=$extralibs
6877 COMPAT_OBJS=$compat_objs
6878 INSTALL=$install
6879 SLIBNAME=${SLIBNAME}
6880 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6881 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6882 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6883 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6884 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6885 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6886 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6887 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6888 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6889 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6890 NOREDZONE_FLAGS=$noredzone_flags
6891 LIBFUZZER_PATH=$libfuzzer_path
6892 IGNORE_TESTS=$ignore_tests
6893 EOF
6894
6895 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6896
6897 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6898     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6899 done
6900
6901 cat > $TMPH <<EOF
6902 /* Automatically generated by configure - do not modify! */
6903 #ifndef FFMPEG_CONFIG_H
6904 #define FFMPEG_CONFIG_H
6905 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6906 #define FFMPEG_LICENSE "$(c_escape $license)"
6907 #define CONFIG_THIS_YEAR 2017
6908 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6909 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6910 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6911 #define av_restrict $_restrict
6912 #define EXTERN_PREFIX "${extern_prefix}"
6913 #define EXTERN_ASM ${extern_prefix}
6914 #define BUILDSUF "$build_suffix"
6915 #define SLIBSUF "$SLIBSUF"
6916 #define HAVE_MMX2 HAVE_MMXEXT
6917 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6918 EOF
6919
6920 test -n "$assert_level" &&
6921     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6922
6923 test -n "$malloc_prefix" &&
6924     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6925
6926 if enabled x86asm; then
6927     append config_files $TMPASM
6928     cat > $TMPASM <<EOF
6929 ; Automatically generated by configure - do not modify!
6930 EOF
6931 fi
6932
6933 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6934
6935
6936 mkdir -p doc
6937 mkdir -p tests
6938 mkdir -p tests/api
6939 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6940
6941 print_config ARCH_   "$config_files" $ARCH_LIST
6942 print_config HAVE_   "$config_files" $HAVE_LIST
6943 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6944                                      $CONFIG_EXTRA      \
6945                                      $ALL_COMPONENTS    \
6946
6947 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6948 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6949
6950 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6951 cp_if_changed $TMPH config.h
6952 touch ffbuild/.config
6953
6954 enabled x86asm && cp_if_changed $TMPASM config.asm
6955
6956 cat > $TMPH <<EOF
6957 /* Generated by ffmpeg configure */
6958 #ifndef AVUTIL_AVCONFIG_H
6959 #define AVUTIL_AVCONFIG_H
6960 EOF
6961
6962 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6963
6964 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6965
6966 cp_if_changed $TMPH libavutil/avconfig.h
6967
6968 # generate the lists of enabled components
6969 print_enabled_components(){
6970     file=$1
6971     struct_name=$2
6972     name=$3
6973     shift 3
6974     echo "static const $struct_name * const $name[] = {" > $TMPH
6975     for c in $*; do
6976         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6977     done
6978     echo "    NULL };" >> $TMPH
6979     cp_if_changed $TMPH $file
6980 }
6981
6982 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6983 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6984
6985 # Settings for pkg-config files
6986
6987 cat > $TMPH <<EOF
6988 # Automatically generated by configure - do not modify!
6989 shared=$shared
6990 build_suffix=$build_suffix
6991 prefix=$prefix
6992 libdir=$libdir
6993 incdir=$incdir
6994 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6995 source_path=${source_path}
6996 LIBPREF=${LIBPREF}
6997 LIBSUF=${LIBSUF}
6998 extralibs_avutil="$avutil_extralibs"
6999 extralibs_avcodec="$avcodec_extralibs"
7000 extralibs_avformat="$avformat_extralibs"
7001 extralibs_avdevice="$avdevice_extralibs"
7002 extralibs_avfilter="$avfilter_extralibs"
7003 extralibs_avresample="$avresample_extralibs"
7004 extralibs_postproc="$postproc_extralibs"
7005 extralibs_swscale="$swscale_extralibs"
7006 extralibs_swresample="$swresample_extralibs"
7007 EOF
7008
7009 for lib in $LIBRARY_LIST; do
7010     lib_deps="$(eval echo \$${lib}_deps)"
7011     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7012 done
7013
7014 cp_if_changed $TMPH ffbuild/config.sh