git.sesse.net Git - ffmpeg/blob - configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --enable-jni             enable JNI support [no]
 221   --enable-ladspa          enable LADSPA audio filtering [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --disable-lzma           disable lzma [autodetect]
 287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 289   --enable-mediacodec      enable Android MediaCodec support [no]
 290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 291   --enable-openal          enable OpenAL 1.1 capture support [no]
 292   --enable-opencl          enable OpenCL code
 293   --enable-opengl          enable OpenGL rendering [no]
 294   --enable-openssl         enable openssl, needed for https support
 295                            if gnutls is not used [no]
 296   --disable-sndio          disable sndio support [autodetect]
 297   --disable-schannel       disable SChannel SSP, needed for TLS support on
 298                            Windows if openssl and gnutls are not used [autodetect]
 299   --disable-sdl2           disable sdl2 [autodetect]
 300   --disable-securetransport disable Secure Transport, needed for TLS support
 301                            on OSX if openssl and gnutls are not used [autodetect]
 302   --disable-xlib           disable xlib [autodetect]
 303   --disable-zlib           disable zlib [autodetect]
 304
 305   The following libraries provide various hardware acceleration features:
 306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 312   --enable-libdrm          enable DRM code (Linux) [no]
 313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 316   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 317   --enable-omx             enable OpenMAX IL code [no]
 318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 319   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 320   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 321   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 322   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 323
 324 Toolchain options:
 325   --arch=ARCH              select architecture [$arch]
 326   --cpu=CPU                select the minimum required CPU (affects
 327                            instruction selection, may crash on older CPUs)
 328   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 329   --progs-suffix=SUFFIX    program name suffix []
 330   --enable-cross-compile   assume a cross-compiler is used
 331   --sysroot=PATH           root of cross-build tree
 332   --sysinclude=PATH        location of cross-build system headers
 333   --target-os=OS           compiler targets OS [$target_os]
 334   --target-exec=CMD        command to run executables on target
 335   --target-path=DIR        path to view of build directory on target
 336   --target-samples=DIR     path to samples directory on target
 337   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 338   --toolchain=NAME         set tool defaults according to NAME
 339   --nm=NM                  use nm tool NM [$nm_default]
 340   --ar=AR                  use archive tool AR [$ar_default]
 341   --as=AS                  use assembler AS [$as_default]
 342   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 343   --strip=STRIP            use strip tool STRIP [$strip_default]
 344   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 345   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 346   --cc=CC                  use C compiler CC [$cc_default]
 347   --cxx=CXX                use C compiler CXX [$cxx_default]
 348   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 349   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 350   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 351   --ld=LD                  use linker LD [$ld_default]
 352   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 353   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 354   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 355   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 356   --host-cc=HOSTCC         use host C compiler HOSTCC
 357   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 358   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 359   --host-ld=HOSTLD         use host linker HOSTLD
 360   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 361   --host-libs=HLIBS        use libs HLIBS when linking for host
 362   --host-os=OS             compiler host OS [$target_os]
 363   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 364   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 365   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 366   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 367   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 368   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 369   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 370   --extra-version=STRING   version string suffix []
 371   --optflags=OPTFLAGS      override optimization-related compiler flags
 372   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 373   --build-suffix=SUFFIX    library name suffix []
 374   --enable-pic             build position-independent code
 375   --enable-thumb           compile for Thumb instruction set
 376   --enable-lto             use link-time optimization
 377   --env="ENV=override"     override the environment variables
 378
 379 Advanced options (experts only):
 380   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 381   --custom-allocator=NAME  use a supported custom allocator
 382   --disable-symver         disable symbol versioning
 383   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 384   --disable-safe-bitstream-reader
 385                            disable buffer boundary checking in bitreaders
 386                            (faster, but may crash)
 387   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 388
 389 Optimization options (experts only):
 390   --disable-asm            disable all assembly optimizations
 391   --disable-altivec        disable AltiVec optimizations
 392   --disable-vsx            disable VSX optimizations
 393   --disable-power8         disable POWER8 optimizations
 394   --disable-amd3dnow       disable 3DNow! optimizations
 395   --disable-amd3dnowext    disable 3DNow! extended optimizations
 396   --disable-mmx            disable MMX optimizations
 397   --disable-mmxext         disable MMXEXT optimizations
 398   --disable-sse            disable SSE optimizations
 399   --disable-sse2           disable SSE2 optimizations
 400   --disable-sse3           disable SSE3 optimizations
 401   --disable-ssse3          disable SSSE3 optimizations
 402   --disable-sse4           disable SSE4 optimizations
 403   --disable-sse42          disable SSE4.2 optimizations
 404   --disable-avx            disable AVX optimizations
 405   --disable-xop            disable XOP optimizations
 406   --disable-fma3           disable FMA3 optimizations
 407   --disable-fma4           disable FMA4 optimizations
 408   --disable-avx2           disable AVX2 optimizations
 409   --disable-aesni          disable AESNI optimizations
 410   --disable-armv5te        disable armv5te optimizations
 411   --disable-armv6          disable armv6 optimizations
 412   --disable-armv6t2        disable armv6t2 optimizations
 413   --disable-vfp            disable VFP optimizations
 414   --disable-neon           disable NEON optimizations
 415   --disable-inline-asm     disable use of inline assembly
 416   --disable-x86asm         disable use of standalone x86 assembly
 417   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 418   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 419   --disable-msa            disable MSA optimizations
 420   --disable-mipsfpu        disable floating point MIPS optimizations
 421   --disable-mmi            disable Loongson SIMD optimizations
 422   --disable-fast-unaligned consider unaligned accesses slow
 423
 424 Developer options (useful when working on FFmpeg itself):
 425   --disable-debug          disable debugging symbols
 426   --enable-debug=LEVEL     set the debug level [$debuglevel]
 427   --disable-optimizations  disable compiler optimizations
 428   --enable-extra-warnings  enable more compiler warnings
 429   --disable-stripping      disable stripping of executables and shared libraries
 430   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 431                            2 causes a slowdown at runtime.
 432   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 433   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 434                            leaks and errors, using the specified valgrind binary.
 435                            Cannot be combined with --target-exec
 436   --enable-ftrapv          Trap arithmetic overflows
 437   --samples=PATH           location of test samples for FATE, if not set use
 438                            \$FATE_SAMPLES at make invocation time.
 439   --enable-neon-clobber-test check NEON registers for clobbering (should be
 440                            used only for debugging purposes)
 441   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 442                            should be used only for debugging purposes)
 443   --enable-random          randomly enable/disable components
 444   --disable-random
 445   --enable-random=LIST     randomly enable/disable specific components or
 446   --disable-random=LIST    component groups. LIST is a comma-separated list
 447                            of NAME[:PROB] entries where NAME is a component
 448                            (group) and PROB the probability associated with
 449                            NAME (default 0.5).
 450   --random-seed=VALUE      seed value for --enable/disable-random
 451   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 452                            (only applies to --disable-optimizations builds)
 453   --enable-osfuzz          Enable building fuzzer tool
 454   --libfuzzer=PATH         path to libfuzzer
 455   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 456                            in the name) of tests whose result is ignored
 457   --enable-linux-perf      enable Linux Performance Monitor API
 458
 459 NOTE: Object files are built at the place where configure is launched.
 460 EOF
 461   exit 0
 462 }
 463
 464 quotes='""'
 465 if test -t 1 && which tput >/dev/null 2>&1; then
 466     ncolors=$(tput colors)
 467     if test -n "$ncolors" && test $ncolors -ge 8; then
 468         bold_color=$(tput bold)
 469         warn_color=$(tput setaf 3)
 470         error_color=$(tput setaf 1)
 471         reset_color=$(tput sgr0)
 472     fi
 473     # 72 used instead of 80 since that's the default of pr
 474     ncols=$(tput cols)
 475 fi
 476 : ${ncols:=72}
 477
 478 log(){
 479     echo "$@" >> $logfile
 480 }
 481
 482 log_file(){
 483     log BEGIN $1
 484     pr -n -t $1 >> $logfile
 485     log END $1
 486 }
 487
 488 warn(){
 489     log "WARNING: $*"
 490     WARNINGS="${WARNINGS}WARNING: $*\n"
 491 }
 492
 493 die(){
 494     log "$@"
 495     echo "$error_color$bold_color$@$reset_color"
 496     cat <<EOF
 497
 498 If you think configure made a mistake, make sure you are using the latest
 499 version from Git.  If the latest version fails, report the problem to the
 500 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 501 EOF
 502     if disabled logging; then
 503         cat <<EOF
 504 Rerun configure with logging enabled (do not use --disable-logging), and
 505 include the log this produces with your report.
 506 EOF
 507     else
 508         cat <<EOF
 509 Include the log file "$logfile" produced by configure as this will help
 510 solve the problem.
 511 EOF
 512     fi
 513     exit 1
 514 }
 515
 516 # Avoid locale weirdness, besides we really just want to translate ASCII.
 517 toupper(){
 518     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 519 }
 520
 521 tolower(){
 522     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 523 }
 524
 525 c_escape(){
 526     echo "$*" | sed 's/["\\]/\\\0/g'
 527 }
 528
 529 sh_quote(){
 530     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 531     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 532     echo "$v"
 533 }
 534
 535 cleanws(){
 536     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 537 }
 538
 539 filter(){
 540     pat=$1
 541     shift
 542     for v; do
 543         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 544     done
 545 }
 546
 547 filter_out(){
 548     pat=$1
 549     shift
 550     for v; do
 551         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 552     done
 553 }
 554
 555 map(){
 556     m=$1
 557     shift
 558     for v; do eval $m; done
 559 }
 560
 561 add_suffix(){
 562     suffix=$1
 563     shift
 564     for v; do echo ${v}${suffix}; done
 565 }
 566
 567 set_all(){
 568     value=$1
 569     shift
 570     for var in $*; do
 571         eval $var=$value
 572     done
 573 }
 574
 575 set_weak(){
 576     value=$1
 577     shift
 578     for var; do
 579         eval : \${$var:=$value}
 580     done
 581 }
 582
 583 sanitize_var_name(){
 584     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 585 }
 586
 587 set_sanitized(){
 588     var=$1
 589     shift
 590     eval $(sanitize_var_name "$var")='$*'
 591 }
 592
 593 get_sanitized(){
 594     eval echo \$$(sanitize_var_name "$1")
 595 }
 596
 597 pushvar(){
 598     for pvar in $*; do
 599         eval level=\${${pvar}_level:=0}
 600         eval ${pvar}_${level}="\$$pvar"
 601         eval ${pvar}_level=$(($level+1))
 602     done
 603 }
 604
 605 popvar(){
 606     for pvar in $*; do
 607         eval level=\${${pvar}_level:-0}
 608         test $level = 0 && continue
 609         eval level=$(($level-1))
 610         eval $pvar="\${${pvar}_${level}}"
 611         eval ${pvar}_level=$level
 612         eval unset ${pvar}_${level}
 613     done
 614 }
 615
 616 request(){
 617     for var in $*; do
 618         eval ${var}_requested=yes
 619         eval $var=
 620     done
 621 }
 622
 623 enable(){
 624     set_all yes $*
 625 }
 626
 627 disable(){
 628     set_all no $*
 629 }
 630
 631 enable_weak(){
 632     set_weak yes $*
 633 }
 634
 635 disable_weak(){
 636     set_weak no $*
 637 }
 638
 639 enable_sanitized(){
 640     for var; do
 641         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 642     done
 643 }
 644
 645 disable_sanitized(){
 646     for var; do
 647         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 648     done
 649 }
 650
 651 do_enable_deep(){
 652     for var; do
 653         enabled $var && continue
 654         eval sel="\$${var}_select"
 655         eval sgs="\$${var}_suggest"
 656         pushvar var sgs
 657         enable_deep $sel
 658         popvar sgs
 659         enable_deep_weak $sgs
 660         popvar var
 661     done
 662 }
 663
 664 enable_deep(){
 665     do_enable_deep $*
 666     enable $*
 667 }
 668
 669 enable_deep_weak(){
 670     for var; do
 671         disabled $var && continue
 672         pushvar var
 673         do_enable_deep $var
 674         popvar var
 675         enable_weak $var
 676     done
 677 }
 678
 679 requested(){
 680     test "${1#!}" = "$1" && op='=' || op=!=
 681     eval test "x\$${1#!}_requested" $op "xyes"
 682 }
 683
 684 enabled(){
 685     test "${1#!}" = "$1" && op='=' || op=!=
 686     eval test "x\$${1#!}" $op "xyes"
 687 }
 688
 689 disabled(){
 690     test "${1#!}" = "$1" && op='=' || op=!=
 691     eval test "x\$${1#!}" $op "xno"
 692 }
 693
 694 enabled_all(){
 695     for opt; do
 696         enabled $opt || return 1
 697     done
 698 }
 699
 700 disabled_all(){
 701     for opt; do
 702         disabled $opt || return 1
 703     done
 704 }
 705
 706 enabled_any(){
 707     for opt; do
 708         enabled $opt && return 0
 709     done
 710 }
 711
 712 disabled_any(){
 713     for opt; do
 714         disabled $opt && return 0
 715     done
 716     return 1
 717 }
 718
 719 set_default(){
 720     for opt; do
 721         eval : \${$opt:=\$${opt}_default}
 722     done
 723 }
 724
 725 is_in(){
 726     value=$1
 727     shift
 728     for var in $*; do
 729         [ $var = $value ] && return 0
 730     done
 731     return 1
 732 }
 733
 734 check_deps(){
 735     for cfg; do
 736         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 737         disabled ${cfg}_checking && continue
 738         enable ${cfg}_checking
 739
 740         eval dep_all="\$${cfg}_deps"
 741         eval dep_any="\$${cfg}_deps_any"
 742         eval dep_con="\$${cfg}_conflict"
 743         eval dep_sel="\$${cfg}_select"
 744         eval dep_sgs="\$${cfg}_suggest"
 745         eval dep_ifa="\$${cfg}_if"
 746         eval dep_ifn="\$${cfg}_if_any"
 747
 748         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 749         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 750         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 751
 752         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 753         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 754         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 755         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 756         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 757         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 758
 759         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 760
 761         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 762             # filter out library deps, these do not belong in extralibs
 763             is_in $dep $LIBRARY_LIST && continue
 764             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 765         done
 766
 767         disable ${cfg}_checking
 768     done
 769 }
 770
 771 print_config(){
 772     pfx=$1
 773     files=$2
 774     shift 2
 775     map 'eval echo "$v \${$v:-no}"' "$@" |
 776     awk "BEGIN { split(\"$files\", files) }
 777         {
 778             c = \"$pfx\" toupper(\$1);
 779             v = \$2;
 780             sub(/yes/, 1, v);
 781             sub(/no/,  0, v);
 782             for (f in files) {
 783                 file = files[f];
 784                 if (file ~ /\\.h\$/) {
 785                     printf(\"#define %s %d\\n\", c, v) >>file;
 786                 } else if (file ~ /\\.asm\$/) {
 787                     printf(\"%%define %s %d\\n\", c, v) >>file;
 788                 } else if (file ~ /\\.mak\$/) {
 789                     n = -v ? \"\" : \"!\";
 790                     printf(\"%s%s=yes\\n\", n, c) >>file;
 791                 } else if (file ~ /\\.texi\$/) {
 792                     pre = -v ? \"\" : \"@c \";
 793                     yesno = \$2;
 794                     c2 = tolower(c);
 795                     gsub(/_/, \"-\", c2);
 796                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 797                 }
 798             }
 799         }"
 800 }
 801
 802 print_enabled(){
 803     suf=$1
 804     shift
 805     for v; do
 806         enabled $v && printf "%s\n" ${v%$suf}
 807     done
 808 }
 809
 810 append(){
 811     var=$1
 812     shift
 813     eval "$var=\"\$$var $*\""
 814 }
 815
 816 prepend(){
 817     var=$1
 818     shift
 819     eval "$var=\"$* \$$var\""
 820 }
 821
 822 unique(){
 823     var=$1
 824     uniq_list=""
 825     for tok in $(eval echo \$$var); do
 826         uniq_list="$(filter_out $tok $uniq_list) $tok"
 827     done
 828     eval "$var=\"${uniq_list}\""
 829 }
 830
 831 resolve(){
 832     var=$1
 833     tmpvar=
 834     for entry in $(eval echo \$$var); do
 835         tmpvar="$tmpvar $(eval echo \$${entry})"
 836     done
 837     eval "$var=\"${tmpvar}\""
 838 }
 839
 840 add_cppflags(){
 841     append CPPFLAGS "$@"
 842 }
 843
 844 add_cflags(){
 845     append CFLAGS $($cflags_filter "$@")
 846 }
 847
 848 add_cflags_headers(){
 849     append CFLAGS_HEADERS $($cflags_filter "$@")
 850 }
 851
 852 add_cxxflags(){
 853     append CXXFLAGS $($cflags_filter "$@")
 854 }
 855
 856 add_asflags(){
 857     append ASFLAGS $($asflags_filter "$@")
 858 }
 859
 860 add_objcflags(){
 861     append OBJCFLAGS $($objcflags_filter "$@")
 862 }
 863
 864 add_ldflags(){
 865     append LDFLAGS $($ldflags_filter "$@")
 866 }
 867
 868 add_ldexeflags(){
 869     append LDEXEFLAGS $($ldflags_filter "$@")
 870 }
 871
 872 add_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     check_ld "cc" "$@" <<EOF
1084 int main(void){ return 0; }
1085 EOF
1086 }
1087
1088 check_ldflags(){
1089     log check_ldflags "$@"
1090     test_ldflags "$@" && add_ldflags "$@"
1091 }
1092
1093 test_stripflags(){
1094     log test_stripflags "$@"
1095     # call check_cc to get a fresh TMPO
1096     check_cc <<EOF
1097 int main(void) { return 0; }
1098 EOF
1099     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1100 }
1101
1102 check_stripflags(){
1103     log check_stripflags "$@"
1104     test_stripflags "$@" && add_stripflags "$@"
1105 }
1106
1107 check_header(){
1108     log check_header "$@"
1109     header=$1
1110     shift
1111     disable_sanitized $header
1112     check_cpp "$@" <<EOF && enable_sanitized $header
1113 #include <$header>
1114 int x;
1115 EOF
1116 }
1117
1118 check_header_objcc(){
1119     log check_header_objcc "$@"
1120     rm -f -- "$TMPO"
1121     header=$1
1122     shift
1123     disable_sanitized $header
1124     {
1125        echo "#include <$header>"
1126        echo "int main(void) { return 0; }"
1127     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1128 }
1129
1130 check_apple_framework(){
1131     log check_apple_framework "$@"
1132     framework="$1"
1133     name="$(tolower $framework)"
1134     header="${framework}/${framework}.h"
1135     disable $name
1136     check_header_objcc $header &&
1137         enable $name && eval ${name}_extralibs='"-framework $framework"'
1138 }
1139
1140 check_func(){
1141     log check_func "$@"
1142     func=$1
1143     shift
1144     disable $func
1145     check_ld "cc" "$@" <<EOF && enable $func
1146 extern int $func();
1147 int main(void){ $func(); }
1148 EOF
1149 }
1150
1151 check_complexfunc(){
1152     log check_complexfunc "$@"
1153     func=$1
1154     narg=$2
1155     shift 2
1156     test $narg = 2 && args="f, g" || args="f * I"
1157     disable $func
1158     check_ld "cc" "$@" <<EOF && enable $func
1159 #include <complex.h>
1160 #include <math.h>
1161 float foo(complex float f, complex float g) { return $func($args); }
1162 int main(void){ return (int) foo; }
1163 EOF
1164 }
1165
1166 check_mathfunc(){
1167     log check_mathfunc "$@"
1168     func=$1
1169     narg=$2
1170     shift 2
1171     test $narg = 2 && args="f, g" || args="f"
1172     disable $func
1173     check_ld "cc" "$@" <<EOF && enable $func
1174 #include <math.h>
1175 float foo(float f, float g) { return $func($args); }
1176 int main(void){ return (int) foo; }
1177 EOF
1178 }
1179
1180 check_func_headers(){
1181     log check_func_headers "$@"
1182     headers=$1
1183     funcs=$2
1184     shift 2
1185     {
1186         for hdr in $headers; do
1187             print_include $hdr
1188         done
1189         echo "#include <stdint.h>"
1190         for func in $funcs; do
1191             echo "long check_$func(void) { return (long) $func; }"
1192         done
1193         echo "int main(void) { int ret = 0;"
1194         # LTO could optimize out the test functions without this
1195         for func in $funcs; do
1196             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1197         done
1198         echo "return ret; }"
1199     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1200 }
1201
1202 check_class_headers_cpp(){
1203     log check_class_headers_cpp "$@"
1204     headers=$1
1205     classes=$2
1206     shift 2
1207     {
1208         for hdr in $headers; do
1209             echo "#include <$hdr>"
1210         done
1211         echo "int main(void) { "
1212         i=1
1213         for class in $classes; do
1214             echo "$class obj$i;"
1215             i=$(expr $i + 1)
1216         done
1217         echo "return 0; }"
1218     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1219 }
1220
1221 check_cpp_condition(){
1222     log check_cpp_condition "$@"
1223     header=$1
1224     condition=$2
1225     shift 2
1226     check_cpp "$@" <<EOF
1227 #include <$header>
1228 #if !($condition)
1229 #error "unsatisfied condition: $condition"
1230 #endif
1231 EOF
1232 }
1233
1234 test_cflags_cc(){
1235     log test_cflags_cc "$@"
1236     flags=$1
1237     header=$2
1238     condition=$3
1239     shift 3
1240     set -- $($cflags_filter "$flags")
1241     check_cc "$@" <<EOF
1242 #include <$header>
1243 #if !($condition)
1244 #error "unsatisfied condition: $condition"
1245 #endif
1246 EOF
1247 }
1248
1249 check_lib(){
1250     log check_lib "$@"
1251     name="$1"
1252     headers="$2"
1253     funcs="$3"
1254     shift 3
1255     disable $name
1256     check_func_headers "$headers" "$funcs" "$@" &&
1257         enable $name && eval ${name}_extralibs="\$@"
1258 }
1259
1260 check_lib_cpp(){
1261     log check_lib_cpp "$@"
1262     name="$1"
1263     headers="$2"
1264     classes="$3"
1265     shift 3
1266     disable $name
1267     check_class_headers_cpp "$headers" "$classes" "$@" &&
1268         enable $name && eval ${name}_extralibs="\$@"
1269 }
1270
1271 check_pkg_config(){
1272     log check_pkg_config "$@"
1273     name="$1"
1274     pkg_version="$2"
1275     pkg="${2%% *}"
1276     headers="$3"
1277     funcs="$4"
1278     shift 4
1279     disable $name
1280     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1281     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1282     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1283     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1284         enable $name &&
1285         set_sanitized "${name}_cflags"    $pkg_cflags &&
1286         set_sanitized "${name}_extralibs" $pkg_libs
1287 }
1288
1289 check_exec(){
1290     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1291 }
1292
1293 check_exec_crash(){
1294     log check_exec_crash "$@"
1295     code=$(cat)
1296
1297     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1298     # are safe but may not be available everywhere.  Thus we use
1299     # raise(SIGTERM) instead.  The check is run in a subshell so we
1300     # can redirect the "Terminated" message from the shell.  SIGBUS
1301     # is not defined by standard C so it is used conditionally.
1302
1303     (check_exec "$@") >> $logfile 2>&1 <<EOF
1304 #include <signal.h>
1305 static void sighandler(int sig){
1306     raise(SIGTERM);
1307 }
1308 int foo(void){
1309     $code
1310 }
1311 int (*func_ptr)(void) = foo;
1312 int main(void){
1313     signal(SIGILL, sighandler);
1314     signal(SIGFPE, sighandler);
1315     signal(SIGSEGV, sighandler);
1316 #ifdef SIGBUS
1317     signal(SIGBUS, sighandler);
1318 #endif
1319     return func_ptr();
1320 }
1321 EOF
1322 }
1323
1324 check_type(){
1325     log check_type "$@"
1326     headers=$1
1327     type=$2
1328     shift 2
1329     disable_sanitized "$type"
1330     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1331 }
1332
1333 check_struct(){
1334     log check_struct "$@"
1335     headers=$1
1336     struct=$2
1337     member=$3
1338     shift 3
1339     disable_sanitized "${struct}_${member}"
1340     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1341         enable_sanitized "${struct}_${member}"
1342 }
1343
1344 check_builtin(){
1345     log check_builtin "$@"
1346     name=$1
1347     headers=$2
1348     builtin=$3
1349     shift 3
1350     disable "$name"
1351     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1352 }
1353
1354 check_compile_assert(){
1355     log check_compile_assert "$@"
1356     name=$1
1357     headers=$2
1358     condition=$3
1359     shift 3
1360     disable "$name"
1361     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1362 }
1363
1364 require(){
1365     log require "$@"
1366     name_version="$1"
1367     name="${1%% *}"
1368     headers="$2"
1369     func="$3"
1370     shift 3
1371     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1372 }
1373
1374 require_cpp(){
1375     name="$1"
1376     headers="$2"
1377     classes="$3"
1378     shift 3
1379     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1380 }
1381
1382 require_header(){
1383     log require "$@"
1384     header="$1"
1385     shift
1386     check_header "$header" "$@" || die "ERROR: $header header not found"
1387 }
1388
1389 require_cpp_condition(){
1390     log require "$@"
1391     header="$1"
1392     condition="$2"
1393     shift 2
1394     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1395 }
1396
1397 use_pkg_config(){
1398     log use_pkg_config "$@"
1399     name="$1"
1400     check_pkg_config "$@" || return 1
1401     add_cflags    $(get_sanitized "${name}_cflags")
1402 }
1403
1404 require_pkg_config(){
1405     log require_pkg_config "$@"
1406     pkg_version="$2"
1407     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1408 }
1409
1410 hostcc_e(){
1411     eval printf '%s\\n' $HOSTCC_E
1412 }
1413
1414 hostcc_o(){
1415     eval printf '%s\\n' $HOSTCC_O
1416 }
1417
1418 check_host_cc(){
1419     log check_host_cc "$@"
1420     cat > $TMPC
1421     log_file $TMPC
1422     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1423 }
1424
1425 check_host_cpp(){
1426     log check_host_cpp "$@"
1427     cat > $TMPC
1428     log_file $TMPC
1429     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1430 }
1431
1432 check_host_cppflags(){
1433     log check_host_cppflags "$@"
1434     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1435 #include <stdlib.h>
1436 EOF
1437 }
1438
1439 check_host_cflags(){
1440     log check_host_cflags "$@"
1441     set -- $($host_cflags_filter "$@")
1442     check_host_cc "$@" <<EOF && append host_cflags "$@"
1443 int x;
1444 EOF
1445 }
1446
1447 check_host_cpp_condition(){
1448     log check_host_cpp_condition "$@"
1449     header=$1
1450     condition=$2
1451     shift 2
1452     check_host_cpp "$@" <<EOF
1453 #include <$header>
1454 #if !($condition)
1455 #error "unsatisfied condition: $condition"
1456 #endif
1457 EOF
1458 }
1459
1460 cp_if_changed(){
1461     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1462     mkdir -p "$(dirname $2)"
1463     cp -f "$1" "$2"
1464 }
1465
1466 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1467 # system-dependent things.
1468
1469 AVCODEC_COMPONENTS="
1470     bsfs
1471     decoders
1472     encoders
1473     hwaccels
1474     parsers
1475 "
1476
1477 AVDEVICE_COMPONENTS="
1478     indevs
1479     outdevs
1480 "
1481
1482 AVFILTER_COMPONENTS="
1483     filters
1484 "
1485
1486 AVFORMAT_COMPONENTS="
1487     demuxers
1488     muxers
1489     protocols
1490 "
1491
1492 AVRESAMPLE_COMPONENTS=""
1493
1494 AVUTIL_COMPONENTS=""
1495
1496 COMPONENT_LIST="
1497     $AVCODEC_COMPONENTS
1498     $AVDEVICE_COMPONENTS
1499     $AVFILTER_COMPONENTS
1500     $AVFORMAT_COMPONENTS
1501     $AVRESAMPLE_COMPONENTS
1502     $AVUTIL_COMPONENTS
1503 "
1504
1505 EXAMPLE_LIST="
1506     avio_dir_cmd_example
1507     avio_reading_example
1508     decode_audio_example
1509     decode_video_example
1510     demuxing_decoding_example
1511     encode_audio_example
1512     encode_video_example
1513     extract_mvs_example
1514     filter_audio_example
1515     filtering_audio_example
1516     filtering_video_example
1517     http_multiclient_example
1518     hw_decode_example
1519     metadata_example
1520     muxing_example
1521     qsvdec_example
1522     remuxing_example
1523     resampling_audio_example
1524     scaling_video_example
1525     transcode_aac_example
1526     transcoding_example
1527 "
1528
1529 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1530     alsa
1531     appkit
1532     avfoundation
1533     bzlib
1534     coreimage
1535     iconv
1536     libxcb
1537     libxcb_shm
1538     libxcb_shape
1539     libxcb_xfixes
1540     lzma
1541     schannel
1542     sdl2
1543     securetransport
1544     sndio
1545     xlib
1546     zlib
1547 "
1548
1549 EXTERNAL_LIBRARY_GPL_LIST="
1550     avisynth
1551     frei0r
1552     libcdio
1553     librubberband
1554     libvidstab
1555     libx264
1556     libx265
1557     libxavs
1558     libxvid
1559 "
1560
1561 EXTERNAL_LIBRARY_NONFREE_LIST="
1562     decklink
1563     libndi_newtek
1564     libfdk_aac
1565     openssl
1566 "
1567
1568 EXTERNAL_LIBRARY_VERSION3_LIST="
1569     gmp
1570     libopencore_amrnb
1571     libopencore_amrwb
1572     libvmaf
1573     libvo_amrwbenc
1574     rkmpp
1575 "
1576
1577 EXTERNAL_LIBRARY_GPLV3_LIST="
1578     libsmbclient
1579 "
1580
1581 EXTERNAL_LIBRARY_LIST="
1582     $EXTERNAL_LIBRARY_GPL_LIST
1583     $EXTERNAL_LIBRARY_NONFREE_LIST
1584     $EXTERNAL_LIBRARY_VERSION3_LIST
1585     $EXTERNAL_LIBRARY_GPLV3_LIST
1586     chromaprint
1587     gcrypt
1588     gnutls
1589     jni
1590     ladspa
1591     libass
1592     libbluray
1593     libbs2b
1594     libcaca
1595     libcelt
1596     libdc1394
1597     libdrm
1598     libflite
1599     libfontconfig
1600     libfreetype
1601     libfribidi
1602     libgme
1603     libgsm
1604     libiec61883
1605     libilbc
1606     libjack
1607     libkvazaar
1608     libmodplug
1609     libmp3lame
1610     libmysofa
1611     libopencv
1612     libopenh264
1613     libopenjpeg
1614     libopenmpt
1615     libopus
1616     libpulse
1617     librsvg
1618     librtmp
1619     libshine
1620     libsmbclient
1621     libsnappy
1622     libsoxr
1623     libspeex
1624     libssh
1625     libtesseract
1626     libtheora
1627     libtwolame
1628     libv4l2
1629     libvorbis
1630     libvpx
1631     libwavpack
1632     libwebp
1633     libxml2
1634     libzimg
1635     libzmq
1636     libzvbi
1637     mediacodec
1638     openal
1639     opencl
1640     opengl
1641 "
1642
1643 HWACCEL_AUTODETECT_LIBRARY_LIST="
1644     audiotoolbox
1645     crystalhd
1646     cuda
1647     cuvid
1648     d3d11va
1649     dxva2
1650     nvenc
1651     vaapi
1652     vdpau
1653     videotoolbox
1654     v4l2_m2m
1655     xvmc
1656 "
1657
1658 # catchall list of things that require external libs to link
1659 EXTRALIBS_LIST="
1660     cpu_init
1661     cws2fws
1662 "
1663
1664 HWACCEL_LIBRARY_NONFREE_LIST="
1665     cuda_sdk
1666     libnpp
1667 "
1668
1669 HWACCEL_LIBRARY_LIST="
1670     $HWACCEL_LIBRARY_NONFREE_LIST
1671     libmfx
1672     mmal
1673     omx
1674 "
1675
1676 DOCUMENT_LIST="
1677     doc
1678     htmlpages
1679     manpages
1680     podpages
1681     txtpages
1682 "
1683
1684 FEATURE_LIST="
1685     ftrapv
1686     gray
1687     hardcoded_tables
1688     omx_rpi
1689     runtime_cpudetect
1690     safe_bitstream_reader
1691     shared
1692     small
1693     static
1694     swscale_alpha
1695 "
1696
1697 LIBRARY_LIST="
1698     avcodec
1699     avdevice
1700     avfilter
1701     avformat
1702     avresample
1703     avutil
1704     postproc
1705     swresample
1706     swscale
1707 "
1708
1709 LICENSE_LIST="
1710     gpl
1711     nonfree
1712     version3
1713 "
1714
1715 PROGRAM_LIST="
1716     ffplay
1717     ffprobe
1718     ffserver
1719     ffmpeg
1720 "
1721
1722 SUBSYSTEM_LIST="
1723     dct
1724     dwt
1725     error_resilience
1726     faan
1727     fast_unaligned
1728     fft
1729     lsp
1730     lzo
1731     mdct
1732     pixelutils
1733     network
1734     rdft
1735 "
1736
1737 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1738 CONFIG_LIST="
1739     $DOCUMENT_LIST
1740     $EXAMPLE_LIST
1741     $EXTERNAL_LIBRARY_LIST
1742     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1743     $HWACCEL_LIBRARY_LIST
1744     $HWACCEL_AUTODETECT_LIBRARY_LIST
1745     $FEATURE_LIST
1746     $LICENSE_LIST
1747     $LIBRARY_LIST
1748     $PROGRAM_LIST
1749     $SUBSYSTEM_LIST
1750     autodetect
1751     fontconfig
1752     linux_perf
1753     memory_poisoning
1754     neon_clobber_test
1755     ossfuzz
1756     pic
1757     thumb
1758     valgrind_backtrace
1759     xmm_clobber_test
1760     $COMPONENT_LIST
1761 "
1762
1763 THREADS_LIST="
1764     pthreads
1765     os2threads
1766     w32threads
1767 "
1768
1769 ATOMICS_LIST="
1770     atomics_gcc
1771     atomics_suncc
1772     atomics_win32
1773 "
1774
1775 AUTODETECT_LIBS="
1776     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1777     $HWACCEL_AUTODETECT_LIBRARY_LIST
1778     $THREADS_LIST
1779 "
1780
1781 ARCH_LIST="
1782     aarch64
1783     alpha
1784     arm
1785     avr32
1786     avr32_ap
1787     avr32_uc
1788     bfin
1789     ia64
1790     m68k
1791     mips
1792     mips64
1793     parisc
1794     ppc
1795     ppc64
1796     s390
1797     sh4
1798     sparc
1799     sparc64
1800     tilegx
1801     tilepro
1802     tomi
1803     x86
1804     x86_32
1805     x86_64
1806 "
1807
1808 ARCH_EXT_LIST_ARM="
1809     armv5te
1810     armv6
1811     armv6t2
1812     armv8
1813     neon
1814     vfp
1815     vfpv3
1816     setend
1817 "
1818
1819 ARCH_EXT_LIST_MIPS="
1820     mipsfpu
1821     mips32r2
1822     mips32r5
1823     mips64r2
1824     mips32r6
1825     mips64r6
1826     mipsdsp
1827     mipsdspr2
1828     msa
1829 "
1830
1831 ARCH_EXT_LIST_LOONGSON="
1832     loongson2
1833     loongson3
1834     mmi
1835 "
1836
1837 ARCH_EXT_LIST_X86_SIMD="
1838     aesni
1839     amd3dnow
1840     amd3dnowext
1841     avx
1842     avx2
1843     fma3
1844     fma4
1845     mmx
1846     mmxext
1847     sse
1848     sse2
1849     sse3
1850     sse4
1851     sse42
1852     ssse3
1853     xop
1854 "
1855
1856 ARCH_EXT_LIST_PPC="
1857     altivec
1858     dcbzl
1859     ldbrx
1860     power8
1861     ppc4xx
1862     vsx
1863 "
1864
1865 ARCH_EXT_LIST_X86="
1866     $ARCH_EXT_LIST_X86_SIMD
1867     cpunop
1868     i686
1869 "
1870
1871 ARCH_EXT_LIST="
1872     $ARCH_EXT_LIST_ARM
1873     $ARCH_EXT_LIST_PPC
1874     $ARCH_EXT_LIST_X86
1875     $ARCH_EXT_LIST_MIPS
1876     $ARCH_EXT_LIST_LOONGSON
1877 "
1878
1879 ARCH_FEATURES="
1880     aligned_stack
1881     fast_64bit
1882     fast_clz
1883     fast_cmov
1884     local_aligned
1885     simd_align_16
1886     simd_align_32
1887 "
1888
1889 BUILTIN_LIST="
1890     atomic_cas_ptr
1891     machine_rw_barrier
1892     MemoryBarrier
1893     mm_empty
1894     rdtsc
1895     sarestart
1896     sem_timedwait
1897     sync_val_compare_and_swap
1898 "
1899 HAVE_LIST_CMDLINE="
1900     inline_asm
1901     symver
1902     x86asm
1903 "
1904
1905 HAVE_LIST_PUB="
1906     bigendian
1907     fast_unaligned
1908 "
1909
1910 HEADERS_LIST="
1911     arpa_inet_h
1912     asm_types_h
1913     cdio_paranoia_h
1914     cdio_paranoia_paranoia_h
1915     cuda_h
1916     d3d11_h
1917     dispatch_dispatch_h
1918     dev_bktr_ioctl_bt848_h
1919     dev_bktr_ioctl_meteor_h
1920     dev_ic_bt8xx_h
1921     dev_video_bktr_ioctl_bt848_h
1922     dev_video_meteor_ioctl_meteor_h
1923     direct_h
1924     dirent_h
1925     dlfcn_h
1926     dxgidebug_h
1927     dxva_h
1928     ES2_gl_h
1929     gsm_h
1930     io_h
1931     mach_mach_time_h
1932     machine_ioctl_bt848_h
1933     machine_ioctl_meteor_h
1934     malloc_h
1935     opencv2_core_core_c_h
1936     OpenGL_gl3_h
1937     poll_h
1938     soundcard_h
1939     stdatomic_h
1940     sys_mman_h
1941     sys_param_h
1942     sys_resource_h
1943     sys_select_h
1944     sys_soundcard_h
1945     sys_time_h
1946     sys_un_h
1947     sys_videoio_h
1948     termios_h
1949     udplite_h
1950     unistd_h
1951     valgrind_valgrind_h
1952     windows_h
1953     winsock2_h
1954 "
1955
1956 INTRINSICS_LIST="
1957     intrinsics_neon
1958 "
1959
1960 COMPLEX_FUNCS="
1961     cabs
1962     cexp
1963 "
1964
1965 MATH_FUNCS="
1966     atanf
1967     atan2f
1968     cbrt
1969     cbrtf
1970     copysign
1971     cosf
1972     erf
1973     exp2
1974     exp2f
1975     expf
1976     hypot
1977     isfinite
1978     isinf
1979     isnan
1980     ldexpf
1981     llrint
1982     llrintf
1983     log2
1984     log2f
1985     log10f
1986     lrint
1987     lrintf
1988     powf
1989     rint
1990     round
1991     roundf
1992     sinf
1993     trunc
1994     truncf
1995 "
1996
1997 SYSTEM_FUNCS="
1998     access
1999     aligned_malloc
2000     arc4random
2001     clock_gettime
2002     closesocket
2003     CommandLineToArgvW
2004     CoTaskMemFree
2005     CryptGenRandom
2006     fcntl
2007     flt_lim
2008     fork
2009     getaddrinfo
2010     gethrtime
2011     getopt
2012     GetProcessAffinityMask
2013     GetProcessMemoryInfo
2014     GetProcessTimes
2015     getrusage
2016     GetSystemTimeAsFileTime
2017     gettimeofday
2018     glob
2019     glXGetProcAddress
2020     gmtime_r
2021     inet_aton
2022     isatty
2023     kbhit
2024     LoadLibrary
2025     localtime_r
2026     lstat
2027     lzo1x_999_compress
2028     mach_absolute_time
2029     MapViewOfFile
2030     memalign
2031     mkstemp
2032     mmap
2033     mprotect
2034     nanosleep
2035     PeekNamedPipe
2036     posix_memalign
2037     pthread_cancel
2038     sched_getaffinity
2039     SetConsoleTextAttribute
2040     SetConsoleCtrlHandler
2041     setmode
2042     setrlimit
2043     Sleep
2044     strerror_r
2045     sysconf
2046     sysctl
2047     usleep
2048     UTGetOSTypeFromString
2049     VirtualAlloc
2050     wglGetProcAddress
2051 "
2052
2053 TOOLCHAIN_FEATURES="
2054     as_arch_directive
2055     as_fpu_directive
2056     as_func
2057     as_object_arch
2058     asm_mod_q
2059     attribute_may_alias
2060     attribute_packed
2061     blocks_extension
2062     ebp_available
2063     ebx_available
2064     gnu_as
2065     gnu_windres
2066     ibm_asm
2067     inline_asm_direct_symbol_refs
2068     inline_asm_labels
2069     inline_asm_nonlocal_labels
2070     pragma_deprecated
2071     rsync_contimeout
2072     symver_asm_label
2073     symver_gnu_asm
2074     vfp_args
2075     xform_asm
2076     xmm_clobbers
2077 "
2078
2079 TYPES_LIST="
2080     CONDITION_VARIABLE_Ptr
2081     kCMVideoCodecType_HEVC
2082     socklen_t
2083     struct_addrinfo
2084     struct_group_source_req
2085     struct_ip_mreq_source
2086     struct_ipv6_mreq
2087     struct_msghdr_msg_flags
2088     struct_pollfd
2089     struct_rusage_ru_maxrss
2090     struct_sctp_event_subscribe
2091     struct_sockaddr_in6
2092     struct_sockaddr_sa_len
2093     struct_sockaddr_storage
2094     struct_stat_st_mtim_tv_nsec
2095     struct_v4l2_frmivalenum_discrete
2096 "
2097
2098 HAVE_LIST="
2099     $ARCH_EXT_LIST
2100     $(add_suffix _external $ARCH_EXT_LIST)
2101     $(add_suffix _inline   $ARCH_EXT_LIST)
2102     $ARCH_FEATURES
2103     $ATOMICS_LIST
2104     $BUILTIN_LIST
2105     $COMPLEX_FUNCS
2106     $HAVE_LIST_CMDLINE
2107     $HAVE_LIST_PUB
2108     $HEADERS_LIST
2109     $INTRINSICS_LIST
2110     $MATH_FUNCS
2111     $SYSTEM_FUNCS
2112     $THREADS_LIST
2113     $TOOLCHAIN_FEATURES
2114     $TYPES_LIST
2115     atomics_native
2116     dos_paths
2117     libc_msvcrt
2118     makeinfo
2119     makeinfo_html
2120     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2121     perl
2122     pod2man
2123     section_data_rel_ro
2124     texi2html
2125     threads
2126     uwp
2127     vaapi_drm
2128     vaapi_x11
2129     vdpau_x11
2130     winrt
2131 "
2132
2133 # options emitted with CONFIG_ prefix but not available on the command line
2134 CONFIG_EXTRA="
2135     aandcttables
2136     ac3dsp
2137     adts_header
2138     audio_frame_queue
2139     audiodsp
2140     blockdsp
2141     bswapdsp
2142     cabac
2143     cbs
2144     cbs_h264
2145     cbs_h265
2146     cbs_mpeg2
2147     dirac_parse
2148     dvprofile
2149     exif
2150     faandct
2151     faanidct
2152     fdctdsp
2153     flacdsp
2154     fmtconvert
2155     frame_thread_encoder
2156     g722dsp
2157     golomb
2158     gplv3
2159     h263dsp
2160     h264chroma
2161     h264dsp
2162     h264parse
2163     h264pred
2164     h264qpel
2165     hevcparse
2166     hpeldsp
2167     huffman
2168     huffyuvdsp
2169     huffyuvencdsp
2170     idctdsp
2171     iirfilter
2172     mdct15
2173     intrax8
2174     iso_media
2175     ividsp
2176     jpegtables
2177     lgplv3
2178     libx262
2179     llauddsp
2180     llviddsp
2181     llvidencdsp
2182     lpc
2183     lzf
2184     me_cmp
2185     mpeg_er
2186     mpegaudio
2187     mpegaudiodsp
2188     mpegaudioheader
2189     mpegvideo
2190     mpegvideoenc
2191     mss34dsp
2192     pixblockdsp
2193     qpeldsp
2194     qsv
2195     qsvdec
2196     qsvenc
2197     rangecoder
2198     riffdec
2199     riffenc
2200     rtpdec
2201     rtpenc_chain
2202     rv34dsp
2203     sinewin
2204     snappy
2205     srtp
2206     startcode
2207     texturedsp
2208     texturedspenc
2209     tpeldsp
2210     vaapi_1
2211     vaapi_encode
2212     vc1dsp
2213     videodsp
2214     vp3dsp
2215     vp56dsp
2216     vp8dsp
2217     wma_freqs
2218     wmv2dsp
2219 "
2220
2221 CMDLINE_SELECT="
2222     $ARCH_EXT_LIST
2223     $CONFIG_LIST
2224     $HAVE_LIST_CMDLINE
2225     $THREADS_LIST
2226     asm
2227     cross_compile
2228     debug
2229     extra_warnings
2230     logging
2231     lto
2232     optimizations
2233     rpath
2234     stripping
2235 "
2236
2237 PATHS_LIST="
2238     bindir
2239     datadir
2240     docdir
2241     incdir
2242     libdir
2243     mandir
2244     pkgconfigdir
2245     prefix
2246     shlibdir
2247     install_name_dir
2248 "
2249
2250 CMDLINE_SET="
2251     $PATHS_LIST
2252     ar
2253     arch
2254     as
2255     assert_level
2256     build_suffix
2257     cc
2258     objcc
2259     cpu
2260     cross_prefix
2261     custom_allocator
2262     cxx
2263     dep_cc
2264     doxygen
2265     env
2266     extra_version
2267     gas
2268     host_cc
2269     host_cflags
2270     host_extralibs
2271     host_ld
2272     host_ldflags
2273     host_os
2274     ignore_tests
2275     install
2276     ld
2277     ln_s
2278     logfile
2279     malloc_prefix
2280     nm
2281     optflags
2282     nvccflags
2283     pkg_config
2284     pkg_config_flags
2285     progs_suffix
2286     random_seed
2287     ranlib
2288     samples
2289     strip
2290     sws_max_filter_size
2291     sysinclude
2292     sysroot
2293     target_exec
2294     target_os
2295     target_path
2296     target_samples
2297     tempprefix
2298     toolchain
2299     valgrind
2300     x86asmexe
2301 "
2302
2303 CMDLINE_APPEND="
2304     extra_cflags
2305     extra_cxxflags
2306     extra_objcflags
2307     host_cppflags
2308 "
2309
2310 # code dependency declarations
2311
2312 # architecture extensions
2313
2314 armv5te_deps="arm"
2315 armv6_deps="arm"
2316 armv6t2_deps="arm"
2317 armv8_deps="aarch64"
2318 neon_deps_any="aarch64 arm"
2319 intrinsics_neon_deps="neon"
2320 vfp_deps_any="aarch64 arm"
2321 vfpv3_deps="vfp"
2322 setend_deps="arm"
2323
2324 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2325
2326 altivec_deps="ppc"
2327 dcbzl_deps="ppc"
2328 ldbrx_deps="ppc"
2329 ppc4xx_deps="ppc"
2330 vsx_deps="altivec"
2331 power8_deps="vsx"
2332
2333 loongson2_deps="mips"
2334 loongson3_deps="mips"
2335 mips32r2_deps="mips"
2336 mips32r5_deps="mips"
2337 mips32r6_deps="mips"
2338 mips64r2_deps="mips"
2339 mips64r6_deps="mips"
2340 mipsfpu_deps="mips"
2341 mipsdsp_deps="mips"
2342 mipsdspr2_deps="mips"
2343 mmi_deps="mips"
2344 msa_deps="mipsfpu"
2345
2346 cpunop_deps="i686"
2347 x86_64_select="i686"
2348 x86_64_suggest="fast_cmov"
2349
2350 amd3dnow_deps="mmx"
2351 amd3dnowext_deps="amd3dnow"
2352 i686_deps="x86"
2353 mmx_deps="x86"
2354 mmxext_deps="mmx"
2355 sse_deps="mmxext"
2356 sse2_deps="sse"
2357 sse3_deps="sse2"
2358 ssse3_deps="sse3"
2359 sse4_deps="ssse3"
2360 sse42_deps="sse4"
2361 aesni_deps="sse42"
2362 avx_deps="sse42"
2363 xop_deps="avx"
2364 fma3_deps="avx"
2365 fma4_deps="avx"
2366 avx2_deps="avx"
2367
2368 mmx_external_deps="x86asm"
2369 mmx_inline_deps="inline_asm x86"
2370 mmx_suggest="mmx_external mmx_inline"
2371
2372 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2373     eval dep=\$${ext}_deps
2374     eval ${ext}_external_deps='"${dep}_external"'
2375     eval ${ext}_inline_deps='"${dep}_inline"'
2376     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2377 done
2378
2379 aligned_stack_if_any="aarch64 ppc x86"
2380 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2381 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2382 fast_unaligned_if_any="aarch64 ppc x86"
2383 simd_align_16_if_any="altivec neon sse"
2384 simd_align_32_if_any="avx"
2385
2386 # system capabilities
2387 symver_if_any="symver_asm_label symver_gnu_asm"
2388 valgrind_backtrace_conflict="optimizations"
2389 valgrind_backtrace_deps="valgrind_valgrind_h"
2390
2391 # threading support
2392 atomics_gcc_if="sync_val_compare_and_swap"
2393 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2394 atomics_win32_if="MemoryBarrier"
2395 atomics_native_if_any="$ATOMICS_LIST"
2396 w32threads_deps="atomics_native"
2397 threads_if_any="$THREADS_LIST"
2398
2399 # subsystems
2400 cbs_h264_select="cbs golomb"
2401 cbs_h265_select="cbs golomb"
2402 cbs_mpeg2_select="cbs"
2403 dct_select="rdft"
2404 dirac_parse_select="golomb"
2405 error_resilience_select="me_cmp"
2406 faandct_deps="faan"
2407 faandct_select="fdctdsp"
2408 faanidct_deps="faan"
2409 faanidct_select="idctdsp"
2410 h264dsp_select="startcode"
2411 hevcparse_select="golomb"
2412 frame_thread_encoder_deps="encoders threads"
2413 intrax8_select="blockdsp idctdsp"
2414 mdct_select="fft"
2415 mdct15_select="fft"
2416 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2417 mpeg_er_select="error_resilience"
2418 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2419 mpegaudiodsp_select="dct"
2420 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2421 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2422 vc1dsp_select="h264chroma qpeldsp startcode"
2423 rdft_select="fft"
2424
2425 # decoders / encoders
2426 aac_decoder_select="adts_header mdct15 mdct sinewin"
2427 aac_fixed_decoder_select="mdct sinewin"
2428 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2429 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2430 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2431 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2432 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2433 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2434 adpcm_g722_decoder_select="g722dsp"
2435 adpcm_g722_encoder_select="g722dsp"
2436 aic_decoder_select="golomb idctdsp"
2437 alac_encoder_select="lpc"
2438 als_decoder_select="bswapdsp"
2439 amrnb_decoder_select="lsp"
2440 amrwb_decoder_select="lsp"
2441 amv_decoder_select="sp5x_decoder exif"
2442 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2443 ape_decoder_select="bswapdsp llauddsp"
2444 apng_decoder_select="zlib"
2445 apng_encoder_select="llvidencdsp zlib"
2446 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2447 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2448 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2449 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2450 atrac1_decoder_select="mdct sinewin"
2451 atrac3_decoder_select="mdct"
2452 atrac3p_decoder_select="mdct sinewin"
2453 avrn_decoder_select="exif jpegtables"
2454 bink_decoder_select="blockdsp hpeldsp"
2455 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2456 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2457 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2458 clearvideo_decoder_select="idctdsp"
2459 cllc_decoder_select="bswapdsp"
2460 comfortnoise_encoder_select="lpc"
2461 cook_decoder_select="audiodsp mdct sinewin"
2462 cscd_decoder_select="lzo"
2463 cscd_decoder_suggest="zlib"
2464 dca_decoder_select="mdct"
2465 dds_decoder_select="texturedsp"
2466 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2467 dnxhd_decoder_select="blockdsp idctdsp"
2468 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2469 dolby_e_decoder_select="mdct"
2470 dvvideo_decoder_select="dvprofile idctdsp"
2471 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2472 dxa_decoder_select="zlib"
2473 dxv_decoder_select="lzf texturedsp"
2474 eac3_decoder_select="ac3_decoder"
2475 eac3_encoder_select="ac3_encoder"
2476 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2477 eatgq_decoder_select="aandcttables"
2478 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2479 exr_decoder_select="zlib"
2480 ffv1_decoder_select="rangecoder"
2481 ffv1_encoder_select="rangecoder"
2482 ffvhuff_decoder_select="huffyuv_decoder"
2483 ffvhuff_encoder_select="huffyuv_encoder"
2484 fic_decoder_select="golomb"
2485 flac_decoder_select="flacdsp"
2486 flac_encoder_select="bswapdsp flacdsp lpc"
2487 flashsv2_decoder_select="zlib"
2488 flashsv2_encoder_select="zlib"
2489 flashsv_decoder_select="zlib"
2490 flashsv_encoder_select="zlib"
2491 flv_decoder_select="h263_decoder"
2492 flv_encoder_select="h263_encoder"
2493 fourxm_decoder_select="blockdsp bswapdsp"
2494 fraps_decoder_select="bswapdsp huffman"
2495 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2496 g729_decoder_select="audiodsp"
2497 h261_decoder_select="mpegvideo"
2498 h261_encoder_select="aandcttables mpegvideoenc"
2499 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2500 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2501 h263i_decoder_select="h263_decoder"
2502 h263p_decoder_select="h263_decoder"
2503 h263p_encoder_select="h263_encoder"
2504 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2505 h264_decoder_suggest="error_resilience"
2506 hap_decoder_select="snappy texturedsp"
2507 hap_encoder_deps="libsnappy"
2508 hap_encoder_select="texturedspenc"
2509 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2510 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2511 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2512 iac_decoder_select="imc_decoder"
2513 imc_decoder_select="bswapdsp fft mdct sinewin"
2514 indeo3_decoder_select="hpeldsp"
2515 indeo4_decoder_select="ividsp"
2516 indeo5_decoder_select="ividsp"
2517 interplay_video_decoder_select="hpeldsp"
2518 jpegls_decoder_select="mjpeg_decoder"
2519 jv_decoder_select="blockdsp"
2520 lagarith_decoder_select="llviddsp"
2521 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2522 magicyuv_decoder_select="llviddsp"
2523 magicyuv_encoder_select="llvidencdsp"
2524 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2525 metasound_decoder_select="lsp mdct sinewin"
2526 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2527 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2528 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2529 mjpegb_decoder_select="mjpeg_decoder"
2530 mlp_decoder_select="mlp_parser"
2531 mlp_encoder_select="lpc"
2532 motionpixels_decoder_select="bswapdsp"
2533 mp1_decoder_select="mpegaudio"
2534 mp1float_decoder_select="mpegaudio"
2535 mp2_decoder_select="mpegaudio"
2536 mp2float_decoder_select="mpegaudio"
2537 mp3_decoder_select="mpegaudio"
2538 mp3adu_decoder_select="mpegaudio"
2539 mp3adufloat_decoder_select="mpegaudio"
2540 mp3float_decoder_select="mpegaudio"
2541 mp3on4_decoder_select="mpegaudio"
2542 mp3on4float_decoder_select="mpegaudio"
2543 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2544 mpc8_decoder_select="mpegaudiodsp"
2545 mpegvideo_decoder_select="mpegvideo"
2546 mpeg1video_decoder_select="mpegvideo"
2547 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2548 mpeg2video_decoder_select="mpegvideo"
2549 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2550 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2551 mpeg4_encoder_select="h263_encoder"
2552 msa1_decoder_select="mss34dsp"
2553 mscc_decoder_select="zlib"
2554 msmpeg4v1_decoder_select="h263_decoder"
2555 msmpeg4v2_decoder_select="h263_decoder"
2556 msmpeg4v2_encoder_select="h263_encoder"
2557 msmpeg4v3_decoder_select="h263_decoder"
2558 msmpeg4v3_encoder_select="h263_encoder"
2559 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2560 mts2_decoder_select="mss34dsp"
2561 mxpeg_decoder_select="mjpeg_decoder"
2562 nellymoser_decoder_select="mdct sinewin"
2563 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2564 nuv_decoder_select="idctdsp lzo"
2565 on2avc_decoder_select="mdct"
2566 opus_decoder_deps="swresample"
2567 opus_decoder_select="mdct15"
2568 opus_encoder_select="audio_frame_queue mdct15"
2569 png_decoder_select="zlib"
2570 png_encoder_select="llvidencdsp zlib"
2571 prores_decoder_select="blockdsp idctdsp"
2572 prores_encoder_select="fdctdsp"
2573 qcelp_decoder_select="lsp"
2574 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2575 ra_144_decoder_select="audiodsp"
2576 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2577 ralf_decoder_select="golomb"
2578 rawvideo_decoder_select="bswapdsp"
2579 rscc_decoder_select="zlib"
2580 rtjpeg_decoder_select="me_cmp"
2581 rv10_decoder_select="h263_decoder"
2582 rv10_encoder_select="h263_encoder"
2583 rv20_decoder_select="h263_decoder"
2584 rv20_encoder_select="h263_encoder"
2585 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2586 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2587 screenpresso_decoder_select="zlib"
2588 shorten_decoder_select="bswapdsp"
2589 sipr_decoder_select="lsp"
2590 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2591 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2592 sonic_decoder_select="golomb rangecoder"
2593 sonic_encoder_select="golomb rangecoder"
2594 sonic_ls_encoder_select="golomb rangecoder"
2595 sp5x_decoder_select="mjpeg_decoder"
2596 srgc_decoder_select="zlib"
2597 svq1_decoder_select="hpeldsp"
2598 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2599 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2600 svq3_decoder_suggest="zlib"
2601 tak_decoder_select="audiodsp"
2602 tdsc_decoder_select="zlib mjpeg_decoder"
2603 theora_decoder_select="vp3_decoder"
2604 thp_decoder_select="mjpeg_decoder"
2605 tiff_decoder_suggest="zlib lzma"
2606 tiff_encoder_suggest="zlib"
2607 truehd_decoder_select="mlp_parser"
2608 truehd_encoder_select="lpc"
2609 truemotion2_decoder_select="bswapdsp"
2610 truespeech_decoder_select="bswapdsp"
2611 tscc_decoder_select="zlib"
2612 twinvq_decoder_select="mdct lsp sinewin"
2613 txd_decoder_select="texturedsp"
2614 utvideo_decoder_select="bswapdsp llviddsp"
2615 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2616 vble_decoder_select="llviddsp"
2617 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2618 vc1image_decoder_select="vc1_decoder"
2619 vorbis_decoder_select="mdct"
2620 vorbis_encoder_select="mdct"
2621 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2622 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2623 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2624 vp6a_decoder_select="vp6_decoder"
2625 vp6f_decoder_select="vp6_decoder"
2626 vp7_decoder_select="h264pred videodsp vp8dsp"
2627 vp8_decoder_select="h264pred videodsp vp8dsp"
2628 vp9_decoder_select="videodsp vp9_parser"
2629 webp_decoder_select="vp8_decoder exif"
2630 wmalossless_decoder_select="llauddsp"
2631 wmapro_decoder_select="mdct sinewin wma_freqs"
2632 wmav1_decoder_select="mdct sinewin wma_freqs"
2633 wmav1_encoder_select="mdct sinewin wma_freqs"
2634 wmav2_decoder_select="mdct sinewin wma_freqs"
2635 wmav2_encoder_select="mdct sinewin wma_freqs"
2636 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2637 wmv1_decoder_select="h263_decoder"
2638 wmv1_encoder_select="h263_encoder"
2639 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2640 wmv2_encoder_select="h263_encoder wmv2dsp"
2641 wmv3_decoder_select="vc1_decoder"
2642 wmv3image_decoder_select="wmv3_decoder"
2643 xma1_decoder_select="wmapro_decoder"
2644 xma2_decoder_select="wmapro_decoder"
2645 zerocodec_decoder_select="zlib"
2646 zlib_decoder_select="zlib"
2647 zlib_encoder_select="zlib"
2648 zmbv_decoder_select="zlib"
2649 zmbv_encoder_select="zlib"
2650
2651 # hardware accelerators
2652 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2653 cuda_deps_any="libdl LoadLibrary"
2654 cuvid_deps="cuda"
2655 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2656 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2657 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2658 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2659 xvmc_deps="X11_extensions_XvMClib_h"
2660
2661 h263_vaapi_hwaccel_deps="vaapi"
2662 h263_vaapi_hwaccel_select="h263_decoder"
2663 h263_videotoolbox_hwaccel_deps="videotoolbox"
2664 h263_videotoolbox_hwaccel_select="h263_decoder"
2665 h264_cuvid_hwaccel_deps="cuda cuvid"
2666 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2667 h264_d3d11va_hwaccel_deps="d3d11va"
2668 h264_d3d11va_hwaccel_select="h264_decoder"
2669 h264_d3d11va2_hwaccel_deps="d3d11va"
2670 h264_d3d11va2_hwaccel_select="h264_decoder"
2671 h264_dxva2_hwaccel_deps="dxva2"
2672 h264_dxva2_hwaccel_select="h264_decoder"
2673 h264_mediacodec_hwaccel_deps="mediacodec"
2674 h264_mmal_hwaccel_deps="mmal"
2675 h264_qsv_hwaccel_deps="libmfx"
2676 h264_vaapi_hwaccel_deps="vaapi"
2677 h264_vaapi_hwaccel_select="h264_decoder"
2678 h264_vdpau_hwaccel_deps="vdpau"
2679 h264_vdpau_hwaccel_select="h264_decoder"
2680 h264_videotoolbox_hwaccel_deps="videotoolbox"
2681 h264_videotoolbox_hwaccel_select="h264_decoder"
2682 hevc_cuvid_hwaccel_deps="cuda cuvid"
2683 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2684 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2685 hevc_d3d11va_hwaccel_select="hevc_decoder"
2686 hevc_mediacodec_hwaccel_deps="mediacodec"
2687 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2688 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2689 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2690 hevc_dxva2_hwaccel_select="hevc_decoder"
2691 hevc_qsv_hwaccel_deps="libmfx"
2692 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2693 hevc_vaapi_hwaccel_select="hevc_decoder"
2694 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2695 hevc_vdpau_hwaccel_select="hevc_decoder"
2696 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2697 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2698 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2699 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2700 mpeg_xvmc_hwaccel_deps="xvmc"
2701 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2702 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2703 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2704 mpeg1_vdpau_hwaccel_deps="vdpau"
2705 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2706 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2707 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2708 mpeg1_xvmc_hwaccel_deps="xvmc"
2709 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2710 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2711 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2712 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2713 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2714 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2715 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2716 mpeg2_dxva2_hwaccel_deps="dxva2"
2717 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2718 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2719 mpeg2_mmal_hwaccel_deps="mmal"
2720 mpeg2_qsv_hwaccel_deps="libmfx"
2721 mpeg2_vaapi_hwaccel_deps="vaapi"
2722 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_vdpau_hwaccel_deps="vdpau"
2724 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2726 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_xvmc_hwaccel_deps="xvmc"
2728 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2729 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2730 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2731 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2732 mpeg4_mmal_hwaccel_deps="mmal"
2733 mpeg4_vaapi_hwaccel_deps="vaapi"
2734 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2735 mpeg4_vdpau_hwaccel_deps="vdpau"
2736 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2737 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2738 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2739 vc1_cuvid_hwaccel_deps="cuda cuvid"
2740 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2741 vc1_d3d11va_hwaccel_deps="d3d11va"
2742 vc1_d3d11va_hwaccel_select="vc1_decoder"
2743 vc1_d3d11va2_hwaccel_deps="d3d11va"
2744 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2745 vc1_dxva2_hwaccel_deps="dxva2"
2746 vc1_dxva2_hwaccel_select="vc1_decoder"
2747 vc1_mmal_hwaccel_deps="mmal"
2748 vc1_qsv_hwaccel_deps="libmfx"
2749 vc1_vaapi_hwaccel_deps="vaapi"
2750 vc1_vaapi_hwaccel_select="vc1_decoder"
2751 vc1_vdpau_hwaccel_deps="vdpau"
2752 vc1_vdpau_hwaccel_select="vc1_decoder"
2753 vp8_cuvid_hwaccel_deps="cuda cuvid"
2754 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2755 vp9_cuvid_hwaccel_deps="cuda cuvid"
2756 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2757 vp8_mediacodec_hwaccel_deps="mediacodec"
2758 vp8_qsv_hwaccel_deps="libmfx"
2759 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2760 vp9_d3d11va_hwaccel_select="vp9_decoder"
2761 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2762 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2763 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2764 vp9_dxva2_hwaccel_select="vp9_decoder"
2765 vp9_mediacodec_hwaccel_deps="mediacodec"
2766 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2767 vp9_vaapi_hwaccel_select="vp9_decoder"
2768 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2769 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2770 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2771 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2772 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2773
2774 # hardware-accelerated codecs
2775 omx_deps="libdl pthreads"
2776 omx_rpi_select="omx"
2777 qsv_deps="libmfx"
2778 qsvdec_select="qsv"
2779 qsvenc_select="qsv"
2780 vaapi_encode_deps="vaapi"
2781 v4l2_m2m_deps_any="linux_videodev2_h"
2782
2783 hwupload_cuda_filter_deps="cuda"
2784 scale_npp_filter_deps="cuda libnpp"
2785 scale_cuda_filter_deps="cuda_sdk"
2786 thumbnail_cuda_filter_deps="cuda_sdk"
2787
2788 nvenc_deps="cuda"
2789 nvenc_deps_any="libdl LoadLibrary"
2790 nvenc_encoder_deps="nvenc"
2791
2792 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2793 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2794 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2795 h264_cuvid_decoder_deps="cuda cuvid"
2796 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2797 h264_mediacodec_decoder_deps="mediacodec"
2798 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2799 h264_mmal_decoder_deps="mmal"
2800 h264_nvenc_encoder_deps="nvenc"
2801 h264_omx_encoder_deps="omx"
2802 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2803 h264_qsv_encoder_select="qsvenc"
2804 h264_rkmpp_decoder_deps="rkmpp"
2805 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2806 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2807 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2808 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2809 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2810 hevc_cuvid_decoder_deps="cuda cuvid"
2811 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2812 hevc_mediacodec_decoder_deps="mediacodec"
2813 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2814 hevc_nvenc_encoder_deps="nvenc"
2815 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2816 hevc_qsv_encoder_select="hevcparse qsvenc"
2817 hevc_rkmpp_decoder_deps="rkmpp"
2818 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2819 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2820 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2821 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2822 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2823 mjpeg_cuvid_decoder_deps="cuda cuvid"
2824 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2825 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2826 mpeg1_cuvid_decoder_deps="cuda cuvid"
2827 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2828 mpeg2_crystalhd_decoder_select="crystalhd"
2829 mpeg2_cuvid_decoder_deps="cuda cuvid"
2830 mpeg2_mmal_decoder_deps="mmal"
2831 mpeg2_mediacodec_decoder_deps="mediacodec"
2832 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2833 mpeg2_qsv_encoder_select="qsvenc"
2834 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2835 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2836 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2837 mpeg4_crystalhd_decoder_select="crystalhd"
2838 mpeg4_cuvid_decoder_deps="cuda cuvid"
2839 mpeg4_mediacodec_decoder_deps="mediacodec"
2840 mpeg4_mmal_decoder_deps="mmal"
2841 mpeg4_omx_encoder_deps="omx"
2842 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2843 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2844 msmpeg4_crystalhd_decoder_select="crystalhd"
2845 nvenc_h264_encoder_select="h264_nvenc_encoder"
2846 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2847 vc1_crystalhd_decoder_select="crystalhd"
2848 vc1_cuvid_decoder_deps="cuda cuvid"
2849 vc1_mmal_decoder_deps="mmal"
2850 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2851 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2852 vp8_cuvid_decoder_deps="cuda cuvid"
2853 vp8_mediacodec_decoder_deps="mediacodec"
2854 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2855 vp8_rkmpp_decoder_deps="rkmpp"
2856 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2857 vp8_vaapi_encoder_select="vaapi_encode"
2858 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2859 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2860 vp9_cuvid_decoder_deps="cuda cuvid"
2861 vp9_mediacodec_decoder_deps="mediacodec"
2862 vp9_rkmpp_decoder_deps="rkmpp"
2863 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2864 vp9_vaapi_encoder_select="vaapi_encode"
2865 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2866 wmv3_crystalhd_decoder_select="crystalhd"
2867
2868 # parsers
2869 aac_parser_select="adts_header"
2870 h264_parser_select="golomb h264dsp h264parse"
2871 hevc_parser_select="hevcparse"
2872 mpegaudio_parser_select="mpegaudioheader"
2873 mpegvideo_parser_select="mpegvideo"
2874 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2875 vc1_parser_select="vc1dsp"
2876
2877 # bitstream_filters
2878 aac_adtstoasc_bsf_select="adts_header"
2879 h264_metadata_bsf_select="cbs_h264"
2880 h264_redundant_pps_bsf_select="cbs_h264"
2881 hevc_metadata_bsf_select="cbs_h265"
2882 mjpeg2jpeg_bsf_select="jpegtables"
2883 mpeg2_metadata_bsf_select="cbs_mpeg2"
2884 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2885
2886 # external libraries
2887 aac_at_decoder_deps="audiotoolbox"
2888 ac3_at_decoder_deps="audiotoolbox"
2889 ac3_at_decoder_select="ac3_parser"
2890 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2891 alac_at_decoder_deps="audiotoolbox"
2892 amr_nb_at_decoder_deps="audiotoolbox"
2893 avisynth_deps_any="libdl LoadLibrary"
2894 avisynth_demuxer_deps="avisynth"
2895 avisynth_demuxer_select="riffdec"
2896 eac3_at_decoder_deps="audiotoolbox"
2897 eac3_at_decoder_select="ac3_parser"
2898 gsm_ms_at_decoder_deps="audiotoolbox"
2899 ilbc_at_decoder_deps="audiotoolbox"
2900 mp1_at_decoder_deps="audiotoolbox"
2901 mp2_at_decoder_deps="audiotoolbox"
2902 mp3_at_decoder_deps="audiotoolbox"
2903 mp1_at_decoder_select="mpegaudioheader"
2904 mp2_at_decoder_select="mpegaudioheader"
2905 mp3_at_decoder_select="mpegaudioheader"
2906 pcm_alaw_at_decoder_deps="audiotoolbox"
2907 pcm_mulaw_at_decoder_deps="audiotoolbox"
2908 qdmc_at_decoder_deps="audiotoolbox"
2909 qdm2_at_decoder_deps="audiotoolbox"
2910 aac_at_encoder_deps="audiotoolbox"
2911 aac_at_encoder_select="audio_frame_queue"
2912 alac_at_encoder_deps="audiotoolbox"
2913 alac_at_encoder_select="audio_frame_queue"
2914 ilbc_at_encoder_deps="audiotoolbox"
2915 ilbc_at_encoder_select="audio_frame_queue"
2916 pcm_alaw_at_encoder_deps="audiotoolbox"
2917 pcm_alaw_at_encoder_select="audio_frame_queue"
2918 pcm_mulaw_at_encoder_deps="audiotoolbox"
2919 pcm_mulaw_at_encoder_select="audio_frame_queue"
2920 chromaprint_muxer_deps="chromaprint"
2921 h264_videotoolbox_encoder_deps="pthreads"
2922 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2923 libcelt_decoder_deps="libcelt"
2924 libfdk_aac_decoder_deps="libfdk_aac"
2925 libfdk_aac_encoder_deps="libfdk_aac"
2926 libfdk_aac_encoder_select="audio_frame_queue"
2927 libgme_demuxer_deps="libgme"
2928 libgsm_decoder_deps="libgsm"
2929 libgsm_encoder_deps="libgsm"
2930 libgsm_ms_decoder_deps="libgsm"
2931 libgsm_ms_encoder_deps="libgsm"
2932 libilbc_decoder_deps="libilbc"
2933 libilbc_encoder_deps="libilbc"
2934 libkvazaar_encoder_deps="libkvazaar"
2935 libmodplug_demuxer_deps="libmodplug"
2936 libmp3lame_encoder_deps="libmp3lame"
2937 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2938 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2939 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2940 libopencore_amrnb_encoder_select="audio_frame_queue"
2941 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2942 libopenh264_decoder_deps="libopenh264"
2943 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2944 libopenh264_encoder_deps="libopenh264"
2945 libopenjpeg_decoder_deps="libopenjpeg"
2946 libopenjpeg_encoder_deps="libopenjpeg"
2947 libopenmpt_demuxer_deps="libopenmpt"
2948 libopus_decoder_deps="libopus"
2949 libopus_encoder_deps="libopus"
2950 libopus_encoder_select="audio_frame_queue"
2951 librsvg_decoder_deps="librsvg"
2952 libshine_encoder_deps="libshine"
2953 libshine_encoder_select="audio_frame_queue"
2954 libspeex_decoder_deps="libspeex"
2955 libspeex_encoder_deps="libspeex"
2956 libspeex_encoder_select="audio_frame_queue"
2957 libtheora_encoder_deps="libtheora"
2958 libtwolame_encoder_deps="libtwolame"
2959 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2960 libvorbis_decoder_deps="libvorbis"
2961 libvorbis_encoder_deps="libvorbis libvorbisenc"
2962 libvorbis_encoder_select="audio_frame_queue"
2963 libvpx_vp8_decoder_deps="libvpx"
2964 libvpx_vp8_encoder_deps="libvpx"
2965 libvpx_vp9_decoder_deps="libvpx"
2966 libvpx_vp9_encoder_deps="libvpx"
2967 libwavpack_encoder_deps="libwavpack"
2968 libwavpack_encoder_select="audio_frame_queue"
2969 libwebp_encoder_deps="libwebp"
2970 libwebp_anim_encoder_deps="libwebp"
2971 libx262_encoder_deps="libx262"
2972 libx264_encoder_deps="libx264"
2973 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2974 libx264rgb_encoder_select="libx264_encoder"
2975 libx265_encoder_deps="libx265"
2976 libxavs_encoder_deps="libxavs"
2977 libxvid_encoder_deps="libxvid"
2978 libzvbi_teletext_decoder_deps="libzvbi"
2979 videotoolbox_suggest="coreservices"
2980 videotoolbox_deps="corefoundation coremedia corevideo"
2981 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2982
2983 # demuxers / muxers
2984 ac3_demuxer_select="ac3_parser"
2985 aiff_muxer_select="iso_media"
2986 asf_demuxer_select="riffdec"
2987 asf_o_demuxer_select="riffdec"
2988 asf_muxer_select="riffenc"
2989 asf_stream_muxer_select="asf_muxer"
2990 avi_demuxer_select="iso_media riffdec exif"
2991 avi_muxer_select="riffenc"
2992 caf_demuxer_select="iso_media riffdec"
2993 caf_muxer_select="iso_media"
2994 dash_muxer_select="mp4_muxer"
2995 dash_demuxer_deps="libxml2"
2996 dirac_demuxer_select="dirac_parser"
2997 dts_demuxer_select="dca_parser"
2998 dtshd_demuxer_select="dca_parser"
2999 dv_demuxer_select="dvprofile"
3000 dv_muxer_select="dvprofile"
3001 dxa_demuxer_select="riffdec"
3002 eac3_demuxer_select="ac3_parser"
3003 f4v_muxer_select="mov_muxer"
3004 fifo_muxer_deps="threads"
3005 flac_demuxer_select="flac_parser"
3006 hds_muxer_select="flv_muxer"
3007 hls_muxer_select="mpegts_muxer"
3008 hls_muxer_suggest="gcrypt openssl"
3009 image2_alias_pix_demuxer_select="image2_demuxer"
3010 image2_brender_pix_demuxer_select="image2_demuxer"
3011 ipod_muxer_select="mov_muxer"
3012 ismv_muxer_select="mov_muxer"
3013 matroska_audio_muxer_select="matroska_muxer"
3014 matroska_demuxer_select="iso_media riffdec"
3015 matroska_demuxer_suggest="bzlib lzo zlib"
3016 matroska_muxer_select="iso_media riffenc"
3017 mmf_muxer_select="riffenc"
3018 mov_demuxer_select="iso_media riffdec"
3019 mov_demuxer_suggest="zlib"
3020 mov_muxer_select="iso_media riffenc rtpenc_chain"
3021 mp3_demuxer_select="mpegaudio_parser"
3022 mp3_muxer_select="mpegaudioheader"
3023 mp4_muxer_select="mov_muxer"
3024 mpegts_demuxer_select="iso_media"
3025 mpegts_muxer_select="adts_muxer latm_muxer"
3026 mpegtsraw_demuxer_select="mpegts_demuxer"
3027 mxf_d10_muxer_select="mxf_muxer"
3028 mxf_opatom_muxer_select="mxf_muxer"
3029 nut_muxer_select="riffenc"
3030 nuv_demuxer_select="riffdec"
3031 oga_muxer_select="ogg_muxer"
3032 ogg_demuxer_select="dirac_parse"
3033 ogv_muxer_select="ogg_muxer"
3034 opus_muxer_select="ogg_muxer"
3035 psp_muxer_select="mov_muxer"
3036 rtp_demuxer_select="sdp_demuxer"
3037 rtp_muxer_select="golomb"
3038 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3039 rtsp_demuxer_select="http_protocol rtpdec"
3040 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3041 sap_demuxer_select="sdp_demuxer"
3042 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3043 sdp_demuxer_select="rtpdec"
3044 smoothstreaming_muxer_select="ismv_muxer"
3045 spdif_demuxer_select="adts_header"
3046 spdif_muxer_select="adts_header"
3047 spx_muxer_select="ogg_muxer"
3048 swf_demuxer_suggest="zlib"
3049 tak_demuxer_select="tak_parser"
3050 tg2_muxer_select="mov_muxer"
3051 tgp_muxer_select="mov_muxer"
3052 vobsub_demuxer_select="mpegps_demuxer"
3053 w64_demuxer_select="wav_demuxer"
3054 w64_muxer_select="wav_muxer"
3055 wav_demuxer_select="riffdec"
3056 wav_muxer_select="riffenc"
3057 webm_muxer_select="iso_media riffenc"
3058 webm_dash_manifest_demuxer_select="matroska_demuxer"
3059 wtv_demuxer_select="mpegts_demuxer riffdec"
3060 wtv_muxer_select="mpegts_muxer riffenc"
3061 xmv_demuxer_select="riffdec"
3062 xwma_demuxer_select="riffdec"
3063
3064 # indevs / outdevs
3065 alsa_indev_deps="alsa"
3066 alsa_outdev_deps="alsa"
3067 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3068 avfoundation_indev_suggest="coregraphics applicationservices"
3069 avfoundation_indev_extralibs="-framework Foundation"
3070 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3071 caca_outdev_deps="libcaca"
3072 decklink_deps_any="libdl LoadLibrary"
3073 decklink_indev_deps="decklink threads"
3074 decklink_indev_extralibs="-lstdc++"
3075 decklink_outdev_deps="decklink threads"
3076 decklink_outdev_extralibs="-lstdc++"
3077 libndi_newtek_indev_deps="libndi_newtek"
3078 libndi_newtek_indev_extralibs="-lndi"
3079 libndi_newtek_outdev_deps="libndi_newtek"
3080 libndi_newtek_outdev_extralibs="-lndi"
3081 dshow_indev_deps="IBaseFilter"
3082 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3083 fbdev_indev_deps="linux_fb_h"
3084 fbdev_outdev_deps="linux_fb_h"
3085 gdigrab_indev_deps="CreateDIBSection"
3086 gdigrab_indev_extralibs="-lgdi32"
3087 gdigrab_indev_select="bmp_decoder"
3088 iec61883_indev_deps="libiec61883"
3089 jack_indev_deps="libjack"
3090 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3091 kmsgrab_indev_deps="libdrm"
3092 lavfi_indev_deps="avfilter"
3093 libcdio_indev_deps="libcdio"
3094 libdc1394_indev_deps="libdc1394"
3095 openal_indev_deps="openal"
3096 opengl_outdev_deps="opengl"
3097 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3098 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3099 pulse_indev_deps="libpulse"
3100 pulse_outdev_deps="libpulse"
3101 sdl2_outdev_deps="sdl2"
3102 sndio_indev_deps="sndio"
3103 sndio_outdev_deps="sndio"
3104 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3105 v4l2_indev_suggest="libv4l2"
3106 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3107 v4l2_outdev_suggest="libv4l2"
3108 vfwcap_indev_deps="vfw32 vfwcap_defines"
3109 xcbgrab_indev_deps="libxcb"
3110 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3111 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3112 xv_outdev_extralibs="-lXv -lX11 -lXext"
3113
3114 # protocols
3115 async_protocol_deps="threads"
3116 bluray_protocol_deps="libbluray"
3117 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3118 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3119 ffrtmpcrypt_protocol_select="tcp_protocol"
3120 ffrtmphttp_protocol_conflict="librtmp_protocol"
3121 ffrtmphttp_protocol_select="http_protocol"
3122 ftp_protocol_select="tcp_protocol"
3123 gopher_protocol_select="network"
3124 http_protocol_select="tcp_protocol"
3125 http_protocol_suggest="zlib"
3126 httpproxy_protocol_select="tcp_protocol"
3127 httpproxy_protocol_suggest="zlib"
3128 https_protocol_select="tls_protocol"
3129 https_protocol_suggest="zlib"
3130 icecast_protocol_select="http_protocol"
3131 librtmp_protocol_deps="librtmp"
3132 librtmpe_protocol_deps="librtmp"
3133 librtmps_protocol_deps="librtmp"
3134 librtmpt_protocol_deps="librtmp"
3135 librtmpte_protocol_deps="librtmp"
3136 libsmbclient_protocol_deps="libsmbclient gplv3"
3137 libssh_protocol_deps="libssh"
3138 mmsh_protocol_select="http_protocol"
3139 mmst_protocol_select="network"
3140 rtmp_protocol_conflict="librtmp_protocol"
3141 rtmp_protocol_select="tcp_protocol"
3142 rtmp_protocol_suggest="zlib"
3143 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3144 rtmpe_protocol_suggest="zlib"
3145 rtmps_protocol_conflict="librtmp_protocol"
3146 rtmps_protocol_select="tls_protocol"
3147 rtmps_protocol_suggest="zlib"
3148 rtmpt_protocol_select="ffrtmphttp_protocol"
3149 rtmpt_protocol_suggest="zlib"
3150 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3151 rtmpte_protocol_suggest="zlib"
3152 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3153 rtmpts_protocol_suggest="zlib"
3154 rtp_protocol_select="udp_protocol"
3155 schannel_conflict="openssl gnutls"
3156 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3157 sctp_protocol_select="network"
3158 securetransport_conflict="openssl gnutls"
3159 srtp_protocol_select="rtp_protocol srtp"
3160 tcp_protocol_select="network"
3161 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3162 tls_protocol_select="tcp_protocol"
3163 udp_protocol_select="network"
3164 udplite_protocol_select="network"
3165 unix_protocol_deps="sys_un_h"
3166 unix_protocol_select="network"
3167
3168 # filters
3169 afftfilt_filter_deps="avcodec"
3170 afftfilt_filter_select="fft"
3171 afir_filter_deps="avcodec"
3172 afir_filter_select="fft"
3173 amovie_filter_deps="avcodec avformat"
3174 aresample_filter_deps="swresample"
3175 ass_filter_deps="libass"
3176 atempo_filter_deps="avcodec"
3177 atempo_filter_select="rdft"
3178 azmq_filter_deps="libzmq"
3179 blackframe_filter_deps="gpl"
3180 boxblur_filter_deps="gpl"
3181 bs2b_filter_deps="libbs2b"
3182 colormatrix_filter_deps="gpl"
3183 coreimage_filter_deps="coreimage appkit"
3184 coreimage_filter_extralibs="-framework OpenGL"
3185 coreimagesrc_filter_deps="coreimage appkit"
3186 coreimagesrc_filter_extralibs="-framework OpenGL"
3187 cover_rect_filter_deps="avcodec avformat gpl"
3188 cropdetect_filter_deps="gpl"
3189 deinterlace_qsv_filter_deps="libmfx"
3190 deinterlace_vaapi_filter_deps="vaapi"
3191 delogo_filter_deps="gpl"
3192 deshake_filter_select="pixelutils"
3193 deshake_filter_suggest="opencl"
3194 drawtext_filter_deps="libfreetype"
3195 drawtext_filter_suggest="libfontconfig libfribidi"
3196 elbg_filter_deps="avcodec"
3197 eq_filter_deps="gpl"
3198 fftfilt_filter_deps="avcodec"
3199 fftfilt_filter_select="rdft"
3200 find_rect_filter_deps="avcodec avformat gpl"
3201 firequalizer_filter_deps="avcodec"
3202 firequalizer_filter_select="rdft"
3203 flite_filter_deps="libflite"
3204 framerate_filter_select="pixelutils"
3205 frei0r_filter_deps="frei0r libdl"
3206 frei0r_src_filter_deps="frei0r libdl"
3207 fspp_filter_deps="gpl"
3208 geq_filter_deps="gpl"
3209 histeq_filter_deps="gpl"
3210 hqdn3d_filter_deps="gpl"
3211 interlace_filter_deps="gpl"
3212 kerndeint_filter_deps="gpl"
3213 ladspa_filter_deps="ladspa libdl"
3214 mcdeint_filter_deps="avcodec gpl"
3215 movie_filter_deps="avcodec avformat"
3216 mpdecimate_filter_deps="gpl"
3217 mpdecimate_filter_select="pixelutils"
3218 mptestsrc_filter_deps="gpl"
3219 negate_filter_deps="lut_filter"
3220 nnedi_filter_deps="gpl"
3221 ocr_filter_deps="libtesseract"
3222 ocv_filter_deps="libopencv"
3223 owdenoise_filter_deps="gpl"
3224 pan_filter_deps="swresample"
3225 perspective_filter_deps="gpl"
3226 phase_filter_deps="gpl"
3227 pp7_filter_deps="gpl"
3228 pp_filter_deps="gpl postproc"
3229 pullup_filter_deps="gpl"
3230 removelogo_filter_deps="avcodec avformat swscale"
3231 repeatfields_filter_deps="gpl"
3232 resample_filter_deps="avresample"
3233 rubberband_filter_deps="librubberband"
3234 sab_filter_deps="gpl swscale"
3235 scale2ref_filter_deps="swscale"
3236 scale_filter_deps="swscale"
3237 scale_qsv_filter_deps="libmfx"
3238 select_filter_select="pixelutils"
3239 showcqt_filter_deps="avcodec avformat swscale"
3240 showcqt_filter_suggest="libfontconfig libfreetype"
3241 showcqt_filter_select="fft"
3242 showfreqs_filter_deps="avcodec"
3243 showfreqs_filter_select="fft"
3244 showspectrum_filter_deps="avcodec"
3245 showspectrum_filter_select="fft"
3246 showspectrumpic_filter_deps="avcodec"
3247 showspectrumpic_filter_select="fft"
3248 signature_filter_deps="gpl avcodec avformat"
3249 smartblur_filter_deps="gpl swscale"
3250 sofalizer_filter_deps="libmysofa avcodec"
3251 sofalizer_filter_select="fft"
3252 spectrumsynth_filter_deps="avcodec"
3253 spectrumsynth_filter_select="fft"
3254 spp_filter_deps="gpl avcodec"
3255 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3256 stereo3d_filter_deps="gpl"
3257 subtitles_filter_deps="avformat avcodec libass"
3258 super2xsai_filter_deps="gpl"
3259 pixfmts_super2xsai_test_deps="super2xsai_filter"
3260 tinterlace_filter_deps="gpl"
3261 tinterlace_merge_test_deps="tinterlace_filter"
3262 tinterlace_pad_test_deps="tinterlace_filter"
3263 tonemap_filter_deps="const_nan"
3264 uspp_filter_deps="gpl avcodec"
3265 unsharp_filter_suggest="opencl"
3266 vaguedenoiser_filter_deps="gpl"
3267 vidstabdetect_filter_deps="libvidstab"
3268 vidstabtransform_filter_deps="libvidstab"
3269 libvmaf_filter_deps="libvmaf"
3270 zmq_filter_deps="libzmq"
3271 zoompan_filter_deps="swscale"
3272 zscale_filter_deps="libzimg const_nan"
3273 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3274
3275 # examples
3276 avio_dir_cmd_deps="avformat avutil"
3277 avio_reading_deps="avformat avcodec avutil"
3278 decode_audio_example_deps="avcodec avutil"
3279 decode_video_example_deps="avcodec avutil"
3280 demuxing_decoding_example_deps="avcodec avformat avutil"
3281 encode_audio_example_deps="avcodec avutil"
3282 encode_video_example_deps="avcodec avutil"
3283 extract_mvs_example_deps="avcodec avformat avutil"
3284 filter_audio_example_deps="avfilter avutil"
3285 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3286 filtering_video_example_deps="avfilter avcodec avformat avutil"
3287 http_multiclient_example_deps="avformat avutil fork"
3288 hw_decode_example_deps="avcodec avformat avutil"
3289 metadata_example_deps="avformat avutil"
3290 muxing_example_deps="avcodec avformat avutil swscale"
3291 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3292 remuxing_example_deps="avcodec avformat avutil"
3293 resampling_audio_example_deps="avutil swresample"
3294 scaling_video_example_deps="avutil swscale"
3295 transcode_aac_example_deps="avcodec avformat swresample"
3296 transcoding_example_deps="avfilter avcodec avformat avutil"
3297
3298 # EXTRALIBS_LIST
3299 cpu_init_extralibs="pthreads_extralibs"
3300 cws2fws_extralibs="zlib_extralibs"
3301
3302 # libraries, in linking order
3303 avcodec_deps="avutil"
3304 avcodec_suggest="libm"
3305 avcodec_select="null_bsf"
3306 avdevice_deps="avformat avcodec avutil"
3307 avdevice_suggest="libm"
3308 avfilter_deps="avutil"
3309 avfilter_suggest="libm"
3310 avformat_deps="avcodec avutil"
3311 avformat_suggest="libm network zlib"
3312 avresample_deps="avutil"
3313 avresample_suggest="libm"
3314 avutil_suggest="clock_gettime libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3315 postproc_deps="avutil gpl"
3316 postproc_suggest="libm"
3317 swresample_deps="avutil"
3318 swresample_suggest="libm libsoxr"
3319 swscale_deps="avutil"
3320 swscale_suggest="libm"
3321
3322 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3323 avfilter_extralibs="pthreads_extralibs"
3324 avutil_extralibs="nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3325
3326 # programs
3327 ffmpeg_deps="avcodec avfilter avformat swresample"
3328 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3329                null_filter
3330                trim_filter"
3331 ffmpeg_suggest="ole32 psapi shell32"
3332 ffplay_deps="avcodec avformat swscale swresample sdl2"
3333 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3334 ffplay_suggest="shell32"
3335 ffprobe_deps="avcodec avformat"
3336 ffprobe_suggest="shell32"
3337 ffserver_deps="avformat fork sarestart"
3338 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3339
3340 # documentation
3341 podpages_deps="perl"
3342 manpages_deps="perl pod2man"
3343 htmlpages_deps="perl"
3344 htmlpages_deps_any="makeinfo_html texi2html"
3345 txtpages_deps="perl makeinfo"
3346 doc_deps_any="manpages htmlpages podpages txtpages"
3347
3348 # default parameters
3349
3350 logfile="ffbuild/config.log"
3351
3352 # installation paths
3353 prefix_default="/usr/local"
3354 bindir_default='${prefix}/bin'
3355 datadir_default='${prefix}/share/ffmpeg'
3356 docdir_default='${prefix}/share/doc/ffmpeg'
3357 incdir_default='${prefix}/include'
3358 libdir_default='${prefix}/lib'
3359 mandir_default='${prefix}/share/man'
3360
3361 # toolchain
3362 ar_default="ar"
3363 cc_default="gcc"
3364 cxx_default="g++"
3365 host_cc_default="gcc"
3366 doxygen_default="doxygen"
3367 install="install"
3368 ln_s_default="ln -s -f"
3369 nm_default="nm -g"
3370 pkg_config_default=pkg-config
3371 ranlib_default="ranlib"
3372 strip_default="strip"
3373 version_script='--version-script'
3374 x86asmexe_default="nasm"
3375 windres_default="windres"
3376 nvcc_default="nvcc"
3377 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3378 striptype="direct"
3379
3380 # OS
3381 target_os_default=$(tolower $(uname -s))
3382 host_os=$target_os_default
3383
3384 # machine
3385 if test "$target_os_default" = aix; then
3386     arch_default=$(uname -p)
3387     strip_default="strip -X32_64"
3388 else
3389     arch_default=$(uname -m)
3390 fi
3391 cpu="generic"
3392 intrinsics="none"
3393
3394 # configurable options
3395 enable $PROGRAM_LIST
3396 enable $DOCUMENT_LIST
3397 enable $EXAMPLE_LIST
3398 enable $(filter_out avresample $LIBRARY_LIST)
3399 enable stripping
3400
3401 enable asm
3402 enable debug
3403 enable doc
3404 enable faan faandct faanidct
3405 enable optimizations
3406 enable runtime_cpudetect
3407 enable safe_bitstream_reader
3408 enable static
3409 enable swscale_alpha
3410 enable valgrind_backtrace
3411
3412 sws_max_filter_size_default=256
3413 set_default sws_max_filter_size
3414
3415 # internal components are enabled by default
3416 enable $EXTRALIBS_LIST
3417
3418 # Avoid external, non-system, libraries getting enabled by dependency resolution
3419 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3420
3421 # build settings
3422 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3423 LIBPREF="lib"
3424 LIBSUF=".a"
3425 FULLNAME='$(NAME)$(BUILDSUF)'
3426 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3427 SLIBPREF="lib"
3428 SLIBSUF=".so"
3429 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3430 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3431 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3432 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3433 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3434 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3435 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3436
3437 asflags_filter=echo
3438 cflags_filter=echo
3439 ldflags_filter=echo
3440
3441 AS_C='-c'
3442 AS_O='-o $@'
3443 CC_C='-c'
3444 CC_E='-E -o $@'
3445 CC_O='-o $@'
3446 CXX_C='-c'
3447 CXX_O='-o $@'
3448 OBJCC_C='-c'
3449 OBJCC_E='-E -o $@'
3450 OBJCC_O='-o $@'
3451 X86ASM_O='-o $@'
3452 LD_O='-o $@'
3453 LD_LIB='-l%'
3454 LD_PATH='-L'
3455 HOSTCC_C='-c'
3456 HOSTCC_E='-E -o $@'
3457 HOSTCC_O='-o $@'
3458 HOSTLD_O='-o $@'
3459 NVCC_C='-c'
3460 NVCC_O='-o $@'
3461
3462 host_extralibs='-lm'
3463 host_cflags_filter=echo
3464 host_ldflags_filter=echo
3465
3466 target_path='$(CURDIR)'
3467
3468 # since the object filename is not given with the -MM flag, the compiler
3469 # is only able to print the basename, and we must add the path ourselves
3470 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3471 DEPFLAGS='-MM'
3472
3473 mkdir -p ffbuild
3474
3475 # find source path
3476 if test -f configure; then
3477     source_path=.
3478 else
3479     source_path=$(cd $(dirname "$0"); pwd)
3480     case "$source_path" in
3481         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3482     esac
3483     test -e "$source_path/config.h" &&
3484         die "Out of tree builds are impossible with config.h in source dir."
3485 fi
3486
3487 for v in "$@"; do
3488     r=${v#*=}
3489     l=${v%"$r"}
3490     r=$(sh_quote "$r")
3491     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3492 done
3493
3494 find_things(){
3495     thing=$1
3496     pattern=$2
3497     file=$source_path/$3
3498     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3499 }
3500
3501 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3502 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3503 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3504 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3505 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3506 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3507 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3508 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3509 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3510
3511 find_things_extern(){
3512     thing=$1
3513     pattern=$2
3514     file=$source_path/$3
3515     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3516 }
3517
3518 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3519 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3520
3521 AVCODEC_COMPONENTS_LIST="
3522     $BSF_LIST
3523     $DECODER_LIST
3524     $ENCODER_LIST
3525     $HWACCEL_LIST
3526     $PARSER_LIST
3527 "
3528
3529 AVDEVICE_COMPONENTS_LIST="
3530     $INDEV_LIST
3531     $OUTDEV_LIST
3532 "
3533
3534 AVFILTER_COMPONENTS_LIST="
3535     $FILTER_LIST
3536 "
3537
3538 AVFORMAT_COMPONENTS_LIST="
3539     $DEMUXER_LIST
3540     $MUXER_LIST
3541     $PROTOCOL_LIST
3542 "
3543
3544 ALL_COMPONENTS="
3545     $AVCODEC_COMPONENTS_LIST
3546     $AVDEVICE_COMPONENTS_LIST
3547     $AVFILTER_COMPONENTS_LIST
3548     $AVFORMAT_COMPONENTS_LIST
3549 "
3550
3551 for n in $COMPONENT_LIST; do
3552     v=$(toupper ${n%s})_LIST
3553     eval enable \$$v
3554     eval ${n}_if_any="\$$v"
3555 done
3556
3557 enable $ARCH_EXT_LIST
3558
3559 die_unknown(){
3560     echo "Unknown option \"$1\"."
3561     echo "See $0 --help for available options."
3562     exit 1
3563 }
3564
3565 print_in_columns() {
3566     cols=$(expr $ncols / 24)
3567     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3568 }
3569
3570 show_list() {
3571     suffix=_$1
3572     shift
3573     echo $* | sed s/$suffix//g | print_in_columns
3574     exit 0
3575 }
3576
3577 rand_list(){
3578     IFS=', '
3579     set -- $*
3580     unset IFS
3581     for thing; do
3582         comp=${thing%:*}
3583         prob=${thing#$comp}
3584         prob=${prob#:}
3585         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3586         echo "prob ${prob:-0.5}"
3587         printf '%s\n' $comp
3588     done
3589 }
3590
3591 do_random(){
3592     action=$1
3593     shift
3594     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3595     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3596 }
3597
3598 for opt do
3599     optval="${opt#*=}"
3600     case "$opt" in
3601         --extra-ldflags=*)
3602             add_ldflags $optval
3603         ;;
3604         --extra-ldexeflags=*)
3605             add_ldexeflags $optval
3606         ;;
3607         --extra-ldsoflags=*)
3608             add_ldsoflags $optval
3609         ;;
3610         --extra-ldlibflags=*)
3611             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3612                  "removed in the future. Use --extra-ldsoflags instead."
3613             add_ldsoflags $optval
3614         ;;
3615         --extra-libs=*)
3616             add_extralibs $optval
3617         ;;
3618         --disable-devices)
3619             disable $INDEV_LIST $OUTDEV_LIST
3620         ;;
3621         --enable-debug=*)
3622             debuglevel="$optval"
3623         ;;
3624         --disable-programs)
3625             disable $PROGRAM_LIST
3626         ;;
3627         --disable-everything)
3628             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3629         ;;
3630         --disable-all)
3631             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3632             disable $LIBRARY_LIST $PROGRAM_LIST doc
3633             enable avutil
3634         ;;
3635         --enable-random|--disable-random)
3636             action=${opt%%-random}
3637             do_random ${action#--} $COMPONENT_LIST
3638         ;;
3639         --enable-random=*|--disable-random=*)
3640             action=${opt%%-random=*}
3641             do_random ${action#--} $optval
3642         ;;
3643         --enable-sdl)
3644             enable sdl2
3645         ;;
3646         --enable-*=*|--disable-*=*)
3647             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3648             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3649             eval list=\$$(toupper $thing)_LIST
3650             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3651             list=$(filter "$name" $list)
3652             [ "$list" = "" ] && warn "Option $opt did not match anything"
3653             $action $list
3654         ;;
3655         --enable-yasm|--disable-yasm)
3656             warn "The ${opt} option is only provided for compatibility and will be\n"\
3657                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3658             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3659         ;;
3660         --yasmexe=*)
3661             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3662                  "removed in the future. Use --x86asmexe instead."
3663             x86asmexe="$optval"
3664         ;;
3665         --enable-?*|--disable-?*)
3666             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3667             if is_in $option $COMPONENT_LIST; then
3668                 test $action = disable && action=unset
3669                 eval $action \$$(toupper ${option%s})_LIST
3670             elif is_in $option $CMDLINE_SELECT; then
3671                 $action $option
3672             else
3673                 die_unknown $opt
3674             fi
3675         ;;
3676         --list-*)
3677             NAME="${opt#--list-}"
3678             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3679             NAME=${NAME%s}
3680             eval show_list $NAME \$$(toupper $NAME)_LIST
3681         ;;
3682         --help|-h) show_help
3683         ;;
3684         --quiet|-q) quiet=yes
3685         ;;
3686         --fatal-warnings) enable fatal_warnings
3687         ;;
3688         --libfuzzer=*)
3689             libfuzzer_path="$optval"
3690         ;;
3691         *)
3692             optname="${opt%%=*}"
3693             optname="${optname#--}"
3694             optname=$(echo "$optname" | sed 's/-/_/g')
3695             if is_in $optname $CMDLINE_SET; then
3696                 eval $optname='$optval'
3697             elif is_in $optname $CMDLINE_APPEND; then
3698                 append $optname "$optval"
3699             else
3700                 die_unknown $opt
3701             fi
3702         ;;
3703     esac
3704 done
3705
3706 for e in $env; do
3707     eval "export $e"
3708 done
3709
3710 if disabled autodetect; then
3711
3712     # Unless iconv is explicitely disabled by the user, we still want to probe
3713     # for the iconv from the libc.
3714     disabled iconv || enable libc_iconv
3715
3716     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3717     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3718 fi
3719 # Mark specifically enabled, but normally autodetected libraries as requested.
3720 for lib in $AUTODETECT_LIBS; do
3721     enabled $lib && request $lib
3722 done
3723 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3724 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3725 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3726
3727 disabled logging && logfile=/dev/null
3728
3729 die_license_disabled() {
3730     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3731 }
3732
3733 die_license_disabled_gpl() {
3734     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3735 }
3736
3737 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3738 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3739
3740 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3741 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3742
3743 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3744
3745 enabled_all gnutls openssl &&
3746     die "GnuTLS and OpenSSL must not be enabled at the same time."
3747
3748 # Disable all the library-specific components if the library itself
3749 # is disabled, see AVCODEC_LIST and following _LIST variables.
3750
3751 disable_components(){
3752     disabled ${1} && disable $(
3753         eval components="\$$(toupper ${1})_COMPONENTS"
3754         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3755     )
3756 }
3757
3758 map 'disable_components $v' $LIBRARY_LIST
3759
3760 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3761 set >> $logfile
3762
3763 test -n "$valgrind" && toolchain="valgrind-memcheck"
3764
3765 enabled ossfuzz && {
3766     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3767     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3768 }
3769
3770 case "$toolchain" in
3771     *-asan)
3772         cc_default="${toolchain%-asan}"
3773         add_cflags  -fsanitize=address
3774         add_ldflags -fsanitize=address
3775     ;;
3776     *-msan)
3777         cc_default="${toolchain%-msan}"
3778         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3779         add_ldflags -fsanitize=memory
3780     ;;
3781     *-tsan)
3782         cc_default="${toolchain%-tsan}"
3783         add_cflags  -fsanitize=thread -fPIE
3784         add_ldflags -fsanitize=thread -pie
3785         case "$toolchain" in
3786             gcc-tsan)
3787                 add_cflags  -fPIC
3788                 add_ldflags -fPIC
3789                 ;;
3790         esac
3791     ;;
3792     *-usan)
3793         cc_default="${toolchain%-usan}"
3794         add_cflags  -fsanitize=undefined
3795         add_ldflags -fsanitize=undefined
3796     ;;
3797     valgrind-*)
3798         target_exec_default="valgrind"
3799         case "$toolchain" in
3800             valgrind-massif)
3801                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3802                 ;;
3803             valgrind-memcheck)
3804                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3805                 ;;
3806         esac
3807     ;;
3808     msvc)
3809         # Check whether the current MSVC version needs the C99 converter.
3810         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3811         # support enough of C99 to build ffmpeg. Default to the new
3812         # behaviour if the regexp was unable to match anything, since this
3813         # successfully parses the version number of existing supported
3814         # versions that require the converter (MSVC 2010 and 2012).
3815         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3816         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3817             cc_default="cl"
3818             cxx_default="cl"
3819         else
3820             cc_default="c99wrap cl"
3821             cxx_default="c99wrap cl"
3822         fi
3823         ld_default="$source_path/compat/windows/mslink"
3824         nm_default="dumpbin -symbols"
3825         ar_default="lib"
3826         case "$arch" in
3827         arm*)
3828             as_default="armasm"
3829             ;;
3830         esac
3831         target_os_default="win32"
3832         # Use a relative path for TMPDIR. This makes sure all the
3833         # ffconf temp files are written with a relative path, avoiding
3834         # issues with msys/win32 path conversion for MSVC parameters
3835         # such as -Fo<file> or -out:<file>.
3836         TMPDIR=.
3837     ;;
3838     icl)
3839         cc_default="icl"
3840         ld_default="xilink"
3841         nm_default="dumpbin -symbols"
3842         ar_default="xilib"
3843         target_os_default="win32"
3844         TMPDIR=.
3845     ;;
3846     gcov)
3847         add_cflags  -fprofile-arcs -ftest-coverage
3848         add_ldflags -fprofile-arcs -ftest-coverage
3849     ;;
3850     llvm-cov)
3851         add_cflags -fprofile-arcs -ftest-coverage
3852         add_ldflags --coverage
3853     ;;
3854     hardened)
3855         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3856         add_cflags   -fno-strict-overflow -fstack-protector-all
3857         add_ldflags  -Wl,-z,relro -Wl,-z,now
3858         add_cflags   -fPIE
3859         add_ldexeflags -fPIE -pie
3860     ;;
3861     ?*)
3862         die "Unknown toolchain $toolchain"
3863     ;;
3864 esac
3865
3866 test -n "$cross_prefix" && enable cross_compile
3867
3868 if enabled cross_compile; then
3869     test -n "$arch" && test -n "$target_os" ||
3870         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3871 fi
3872
3873 ar_default="${cross_prefix}${ar_default}"
3874 cc_default="${cross_prefix}${cc_default}"
3875 cxx_default="${cross_prefix}${cxx_default}"
3876 nm_default="${cross_prefix}${nm_default}"
3877 pkg_config_default="${cross_prefix}${pkg_config_default}"
3878 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3879     ranlib_default="${cross_prefix}${ranlib_default} -D"
3880 else
3881     ranlib_default="${cross_prefix}${ranlib_default}"
3882 fi
3883 strip_default="${cross_prefix}${strip_default}"
3884 windres_default="${cross_prefix}${windres_default}"
3885
3886 sysinclude_default="${sysroot}/usr/include"
3887
3888 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3889     target_exec target_os x86asmexe nvcc
3890 enabled cross_compile || host_cc_default=$cc
3891 set_default host_cc
3892
3893 pkg_config_fail_message=""
3894 if ! $pkg_config --version >/dev/null 2>&1; then
3895     warn "$pkg_config not found, library detection may fail."
3896     pkg_config=false
3897 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3898     pkg_config_fail_message="
3899 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3900 fi
3901
3902 if test $doxygen != $doxygen_default && \
3903   ! $doxygen --version >/dev/null 2>&1; then
3904     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3905 fi
3906
3907 exesuf() {
3908     case $1 in
3909         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3910     esac
3911 }
3912
3913 EXESUF=$(exesuf $target_os)
3914 HOSTEXESUF=$(exesuf $host_os)
3915
3916 # set temporary file name
3917 : ${TMPDIR:=$TEMPDIR}
3918 : ${TMPDIR:=$TMP}
3919 : ${TMPDIR:=/tmp}
3920
3921 if [ -n "$tempprefix" ] ; then
3922     mktemp(){
3923         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3924         echo "$tmpname"
3925         mkdir "$tmpname"
3926     }
3927 elif ! check_cmd mktemp -u XXXXXX; then
3928     # simple replacement for missing mktemp
3929     # NOT SAFE FOR GENERAL USE
3930     mktemp(){
3931         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3932         echo "$tmpname"
3933         mkdir "$tmpname"
3934     }
3935 fi
3936
3937 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3938     die "Unable to create temporary directory in $TMPDIR."
3939
3940 tmpfile(){
3941     tmp="${FFTMPDIR}/test"$2
3942     (set -C; exec > $tmp) 2> /dev/null ||
3943         die "Unable to create temporary file in $FFTMPDIR."
3944     eval $1=$tmp
3945 }
3946
3947 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3948 trap 'exit 2' INT
3949
3950 tmpfile TMPASM .asm
3951 tmpfile TMPC   .c
3952 tmpfile TMPCPP .cpp
3953 tmpfile TMPE   $EXESUF
3954 tmpfile TMPH   .h
3955 tmpfile TMPM   .m
3956 tmpfile TMPO   .o
3957 tmpfile TMPS   .S
3958 tmpfile TMPSH  .sh
3959 tmpfile TMPV   .ver
3960
3961 unset -f mktemp
3962
3963 chmod +x $TMPE
3964
3965 # make sure we can execute files in $TMPDIR
3966 cat > $TMPSH 2>> $logfile <<EOF
3967 #! /bin/sh
3968 EOF
3969 chmod +x $TMPSH >> $logfile 2>&1
3970 if ! $TMPSH >> $logfile 2>&1; then
3971     cat <<EOF
3972 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3973 variable to another directory and make sure that it is not mounted noexec.
3974 EOF
3975     die "Sanity test failed."
3976 fi
3977
3978 armasm_flags(){
3979     for flag; do
3980         case $flag in
3981             # Filter out MSVC cl.exe options from cflags that shouldn't
3982             # be passed to gas-preprocessor
3983             -M[TD]*)                                            ;;
3984             *)                  echo $flag                      ;;
3985         esac
3986    done
3987 }
3988
3989 ccc_flags(){
3990     for flag; do
3991         case $flag in
3992             -std=c99)           echo -c99                       ;;
3993             -mcpu=*)            echo -arch ${flag#*=}           ;;
3994             -mieee)             echo -ieee                      ;;
3995             -O*|-fast)          echo $flag                      ;;
3996             -fno-math-errno)    echo -assume nomath_errno       ;;
3997             -g)                 echo -g3                        ;;
3998             -Wall)              echo -msg_enable level2         ;;
3999             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
4000             -Wl,*)              echo $flag                      ;;
4001             -f*|-W*)                                            ;;
4002             *)                  echo $flag                      ;;
4003         esac
4004    done
4005 }
4006
4007 cparser_flags(){
4008     for flag; do
4009         case $flag in
4010             -Wno-switch)             echo -Wno-switch-enum ;;
4011             -Wno-format-zero-length) ;;
4012             -Wdisabled-optimization) ;;
4013             -Wno-pointer-sign)       echo -Wno-other ;;
4014             *)                       echo $flag ;;
4015         esac
4016     done
4017 }
4018
4019 msvc_common_flags(){
4020     for flag; do
4021         case $flag in
4022             # In addition to specifying certain flags under the compiler
4023             # specific filters, they must be specified here as well or else the
4024             # generic catch all at the bottom will print the original flag.
4025             -Wall)                ;;
4026             -Wextra)              ;;
4027             -std=c99)             ;;
4028             # Common flags
4029             -fomit-frame-pointer) ;;
4030             -g)                   echo -Z7 ;;
4031             -fno-math-errno)      ;;
4032             -fno-common)          ;;
4033             -fno-signed-zeros)    ;;
4034             -fPIC)                ;;
4035             -mthumb)              ;;
4036             -march=*)             ;;
4037             -lz)                  echo zlib.lib ;;
4038             -lx264)               echo libx264.lib ;;
4039             -lstdc++)             ;;
4040             -l*)                  echo ${flag#-l}.lib ;;
4041             -LARGEADDRESSAWARE)   echo $flag ;;
4042             -L*)                  echo -libpath:${flag#-L} ;;
4043             *)                    echo $flag ;;
4044         esac
4045     done
4046 }
4047
4048 msvc_flags(){
4049     msvc_common_flags "$@"
4050     for flag; do
4051         case $flag in
4052             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4053                                        -wd4554 ;;
4054             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4055                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4056                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4057                                        -wd4307 \
4058                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4059         esac
4060     done
4061 }
4062
4063 icl_flags(){
4064     msvc_common_flags "$@"
4065     for flag; do
4066         case $flag in
4067             # Despite what Intel's documentation says -Wall, which is supported
4068             # on Windows, does enable remarks so disable them here.
4069             -Wall)                echo $flag -Qdiag-disable:remark ;;
4070             -std=c99)             echo -Qstd=c99 ;;
4071             -flto)                echo -ipo ;;
4072         esac
4073     done
4074 }
4075
4076 icc_flags(){
4077     for flag; do
4078         case $flag in
4079             -flto)                echo -ipo ;;
4080             *)                    echo $flag ;;
4081         esac
4082     done
4083 }
4084
4085 pgi_flags(){
4086     for flag; do
4087         case $flag in
4088             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4089             -fomit-frame-pointer) echo -Mnoframe ;;
4090             -g)                   echo -gopt ;;
4091             *)                    echo $flag ;;
4092         esac
4093     done
4094 }
4095
4096 suncc_flags(){
4097     for flag; do
4098         case $flag in
4099             -march=*|-mcpu=*)
4100                 case "${flag#*=}" in
4101                     native)                   echo -xtarget=native       ;;
4102                     v9|niagara)               echo -xarch=sparc          ;;
4103                     ultrasparc)               echo -xarch=sparcvis       ;;
4104                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4105                     i586|pentium)             echo -xchip=pentium        ;;
4106                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4107                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4108                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4109                     pentium4*)          echo -xtarget=pentium4           ;;
4110                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4111                     *-sse3)             echo -xarch=sse3                 ;;
4112                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4113                     bonnell)                   echo -xarch=ssse3         ;;
4114                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4115                     westmere)                  echo -xtarget=westmere    ;;
4116                     silvermont)                echo -xarch=sse4_2        ;;
4117                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4118                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4119                                                echo -xarch=avx           ;;
4120                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4121                     btver1)                    echo -xarch=amdsse4a      ;;
4122                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4123                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4124                     k8|opteron|athlon64|athlon-fx)
4125                                                echo -xarch=sse2a         ;;
4126                     athlon*)                   echo -xarch=pentium_proa  ;;
4127                 esac
4128                 ;;
4129             -std=c99)             echo -xc99              ;;
4130             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4131             -fPIC)                echo -KPIC -xcode=pic32 ;;
4132             -W*,*)                echo $flag              ;;
4133             -f*-*|-W*|-mimpure-text)                      ;;
4134             -shared)              echo -G                 ;;
4135             *)                    echo $flag              ;;
4136         esac
4137     done
4138 }
4139
4140 tms470_flags(){
4141     for flag; do
4142         case $flag in
4143             -march=*|-mcpu=*)
4144                 case "${flag#*=}" in
4145                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4146                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4147                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4148                     armv6*|arm11*)          echo -mv=6   ;;
4149                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4150                                             echo -mv=5e  ;;
4151                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4152                 esac
4153                 ;;
4154             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4155             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4156             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4157             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4158             -msoft-float)   echo --float_support=vfplib       ;;
4159             -O[0-3]|-mf=*)  echo $flag                        ;;
4160             -g)             echo -g -mn                       ;;
4161             -pds=*)         echo $flag                        ;;
4162             -D*|-I*)        echo $flag                        ;;
4163             --gcc|--abi=*)  echo $flag                        ;;
4164             -me)            echo $flag                        ;;
4165         esac
4166     done
4167 }
4168
4169 probe_cc(){
4170     pfx=$1
4171     _cc=$2
4172     first=$3
4173
4174     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4175     unset _ld_o _ldflags _ld_lib _ld_path
4176     unset _depflags _DEPCMD _DEPFLAGS
4177     _flags_filter=echo
4178
4179     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4180         true # no-op to avoid reading stdin in following checks
4181     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4182         _type=llvm_gcc
4183         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4184         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4185         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4186         _cflags_speed='-O3'
4187         _cflags_size='-Os'
4188     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4189         _type=gcc
4190         gcc_version=$($_cc --version | head -n1)
4191         gcc_basever=$($_cc -dumpversion)
4192         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4193         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4194         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4195         case $gcc_basever in
4196             2) ;;
4197             2.*) ;;
4198             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4199         esac
4200         if [ "$first" = true ]; then
4201             case $gcc_basever in
4202                 4.2*)
4203                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4204             esac
4205         fi
4206         _cflags_speed='-O3'
4207         _cflags_size='-Os'
4208     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4209         _type=icc
4210         _ident=$($_cc --version | head -n1)
4211         _depflags='-MMD'
4212         _cflags_speed='-O3'
4213         _cflags_size='-Os'
4214         _cflags_noopt='-O1'
4215         _flags_filter=icc_flags
4216     elif $_cc -v 2>&1 | grep -q xlc; then
4217         _type=xlc
4218         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4219         _cflags_speed='-O5'
4220         _cflags_size='-O5 -qcompact'
4221     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4222         _type=ccc
4223         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4224         _DEPFLAGS='-M'
4225         _cflags_speed='-fast'
4226         _cflags_size='-O1'
4227         _flags_filter=ccc_flags
4228     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4229         test -d "$sysroot" || die "No valid sysroot specified."
4230         _type=armcc
4231         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4232         armcc_conf="$PWD/armcc.conf"
4233         $_cc --arm_linux_configure                 \
4234              --arm_linux_config_file="$armcc_conf" \
4235              --configure_sysroot="$sysroot"        \
4236              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4237              die "Error creating armcc configuration file."
4238         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4239         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4240         as_default="${cross_prefix}gcc"
4241         _depflags='-MMD'
4242         _cflags_speed='-O3'
4243         _cflags_size='-Os'
4244     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4245         _type=tms470
4246         _ident=$($_cc -version | head -n1 | tr -s ' ')
4247         _flags='--gcc --abi=eabi -me'
4248         _cc_e='-ppl -fe=$@'
4249         _cc_o='-fe=$@'
4250         _depflags='-ppa -ppd=$(@:.o=.d)'
4251         _cflags_speed='-O3 -mf=5'
4252         _cflags_size='-O3 -mf=2'
4253         _flags_filter=tms470_flags
4254     elif $_cc -v 2>&1 | grep -q clang; then
4255         _type=clang
4256         _ident=$($_cc --version 2>/dev/null | head -n1)
4257         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4258         _cflags_speed='-O3'
4259         _cflags_size='-Oz'
4260     elif $_cc -V 2>&1 | grep -q Sun; then
4261         _type=suncc
4262         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4263         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4264         _DEPFLAGS='-xM1 -xc99'
4265         _ldflags='-std=c99'
4266         _cflags_speed='-O5'
4267         _cflags_size='-O5 -xspace'
4268         _flags_filter=suncc_flags
4269     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4270         _type=pathscale
4271         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4272         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4273         _cflags_speed='-O2'
4274         _cflags_size='-Os'
4275         _flags_filter='filter_out -Wdisabled-optimization'
4276     elif $_cc -v 2>&1 | grep -q Open64; then
4277         _type=open64
4278         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4279         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4280         _cflags_speed='-O2'
4281         _cflags_size='-Os'
4282         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4283     elif $_cc -V 2>&1 | grep -q Portland; then
4284         _type=pgi
4285         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4286         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4287         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4288         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4289         _cflags_noopt="-O"
4290         _flags_filter=pgi_flags
4291     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4292         _type=armasm
4293         _ident=$($_cc | head -n1)
4294         # 4509: "This form of conditional instruction is deprecated"
4295         _flags="-nologo -ignore 4509"
4296         _flags_filter=armasm_flags
4297     elif $_cc 2>&1 | grep -q Intel; then
4298         _type=icl
4299         _ident=$($_cc 2>&1 | head -n1)
4300         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4301         # Not only is O3 broken on 13.x+ but it is slower on all previous
4302         # versions (tested) as well.
4303         _cflags_speed="-O2"
4304         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4305         if $_cc 2>&1 | grep -q Linker; then
4306             _ld_o='-out:$@'
4307         else
4308             _ld_o='-Fe$@'
4309         fi
4310         _cc_o='-Fo$@'
4311         _cc_e='-P'
4312         _flags_filter=icl_flags
4313         _ld_lib='lib%.a'
4314         _ld_path='-libpath:'
4315         # -Qdiag-error to make icl error when seeing certain unknown arguments
4316         _flags='-nologo -Qdiag-error:4044,10157'
4317         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4318         # with MSVC which enables it by default.
4319         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4320         disable stripping
4321     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4322         # lld can emulate multiple different linkers; in ms link.exe mode,
4323         # the -? parameter gives the help output which contains an identifyable
4324         # string, while it gives an error in other modes.
4325         _type=lld-link
4326         # The link.exe mode doesn't have a switch for getting the version,
4327         # but we can force it back to gnu mode and get the version from there.
4328         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4329         _ld_o='-out:$@'
4330         _flags_filter=msvc_flags
4331         _ld_lib='lib%.a'
4332         _ld_path='-libpath:'
4333     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4334         _type=msvc
4335         _ident=$($_cc 2>&1 | head -n1)
4336         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4337         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4338         _cflags_speed="-O2"
4339         _cflags_size="-O1"
4340         _cflags_noopt="-O1"
4341         if $_cc -nologo- 2>&1 | grep -q Linker; then
4342             _ld_o='-out:$@'
4343         else
4344             _ld_o='-Fe$@'
4345         fi
4346         _cc_o='-Fo$@'
4347         _cc_e='-P -Fi$@'
4348         _flags_filter=msvc_flags
4349         _ld_lib='lib%.a'
4350         _ld_path='-libpath:'
4351         _flags='-nologo'
4352         disable stripping
4353     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4354         _type=cparser
4355         _ident=$($_cc --version | head -n1)
4356         _depflags='-MMD'
4357         _cflags_speed='-O4'
4358         _cflags_size='-O2'
4359         _flags_filter=cparser_flags
4360     fi
4361
4362     eval ${pfx}_type=\$_type
4363     eval ${pfx}_ident=\$_ident
4364 }
4365
4366 set_ccvars(){
4367     eval ${1}_C=\${_cc_c-\${${1}_C}}
4368     eval ${1}_E=\${_cc_e-\${${1}_E}}
4369     eval ${1}_O=\${_cc_o-\${${1}_O}}
4370
4371     if [ -n "$_depflags" ]; then
4372         eval ${1}_DEPFLAGS=\$_depflags
4373     else
4374         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4375         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4376         eval DEP${1}FLAGS=\$_flags
4377     fi
4378 }
4379
4380 probe_cc cc "$cc" "true"
4381 cflags_filter=$_flags_filter
4382 cflags_speed=$_cflags_speed
4383 cflags_size=$_cflags_size
4384 cflags_noopt=$_cflags_noopt
4385 add_cflags $_flags $_cflags
4386 cc_ldflags=$_ldflags
4387 set_ccvars CC
4388 set_ccvars CXX
4389
4390 probe_cc hostcc "$host_cc"
4391 host_cflags_filter=$_flags_filter
4392 host_cflags_speed=$_cflags_speed
4393 add_host_cflags  $_flags $_cflags
4394 set_ccvars HOSTCC
4395
4396 test -n "$cc_type" && enable $cc_type ||
4397     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4398
4399 : ${as_default:=$cc}
4400 : ${objcc_default:=$cc}
4401 : ${dep_cc_default:=$cc}
4402 : ${ld_default:=$cc}
4403 : ${host_ld_default:=$host_cc}
4404 set_default ar as objcc dep_cc ld ln_s host_ld windres
4405
4406 probe_cc as "$as"
4407 asflags_filter=$_flags_filter
4408 add_asflags $_flags $_cflags
4409 set_ccvars AS
4410
4411 probe_cc objcc "$objcc"
4412 objcflags_filter=$_flags_filter
4413 add_objcflags $_flags $_cflags
4414 set_ccvars OBJC
4415
4416 probe_cc ld "$ld"
4417 ldflags_filter=$_flags_filter
4418 add_ldflags $_flags $_ldflags
4419 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4420 LD_O=${_ld_o-$LD_O}
4421 LD_LIB=${_ld_lib-$LD_LIB}
4422 LD_PATH=${_ld_path-$LD_PATH}
4423
4424 probe_cc hostld "$host_ld"
4425 host_ldflags_filter=$_flags_filter
4426 add_host_ldflags $_flags $_ldflags
4427 HOSTLD_O=${_ld_o-$HOSTLD_O}
4428
4429 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4430     probe_cc depcc "$dep_cc"
4431     CCDEP=${_DEPCMD:-$DEPCMD}
4432     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4433     DEPCCFLAGS=$_flags
4434 fi
4435
4436 if $ar 2>&1 | grep -q Microsoft; then
4437     arflags="-nologo"
4438     ar_o='-out:$@'
4439 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4440     arflags="rq"
4441     ar_o='$@'
4442 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4443     arflags='-Xany -r -c'
4444     ar_o='$@'
4445 elif $ar 2>&1 | grep -q "\[D\] "; then
4446     arflags="rcD"
4447     ar_o='$@'
4448 else
4449     arflags="rc"
4450     ar_o='$@'
4451 fi
4452
4453 add_cflags $extra_cflags
4454 add_cxxflags $extra_cxxflags
4455 add_objcflags $extra_objcflags
4456 add_asflags $extra_cflags
4457
4458 if test -n "$sysroot"; then
4459     case "$cc_type" in
4460         gcc|llvm_gcc|clang)
4461             add_cppflags --sysroot="$sysroot"
4462             add_ldflags --sysroot="$sysroot"
4463         ;;
4464         tms470)
4465             add_cppflags -I"$sysinclude"
4466             add_ldflags  --sysroot="$sysroot"
4467         ;;
4468     esac
4469 fi
4470
4471 if test "$cpu" = host; then
4472     enabled cross_compile &&
4473         die "--cpu=host makes no sense when cross-compiling."
4474
4475     case "$cc_type" in
4476         gcc|llvm_gcc)
4477             check_native(){
4478                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4479                 sed -n "/cc1.*$1=/{
4480                             s/.*$1=\\([^ ]*\\).*/\\1/
4481                             p
4482                             q
4483                         }" $TMPE
4484             }
4485             cpu=$(check_native -march || check_native -mcpu)
4486         ;;
4487         clang)
4488             check_native(){
4489                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4490                 sed -n "/cc1.*-target-cpu /{
4491                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4492                             p
4493                             q
4494                         }" $TMPE
4495             }
4496             cpu=$(check_native -march)
4497         ;;
4498     esac
4499
4500     test "${cpu:-host}" = host &&
4501         die "--cpu=host not supported with compiler $cc"
4502 fi
4503
4504 # Deal with common $arch aliases
4505 case "$arch" in
4506     aarch64|arm64)
4507         arch="aarch64"
4508     ;;
4509     arm*|iPad*|iPhone*)
4510         arch="arm"
4511     ;;
4512     mips*|IP*)
4513         case "$arch" in
4514         *el)
4515             add_cppflags -EL
4516             add_ldflags -EL
4517         ;;
4518         *eb)
4519             add_cppflags -EB
4520             add_ldflags -EB
4521         ;;
4522         esac
4523         arch="mips"
4524     ;;
4525     parisc*|hppa*)
4526         arch="parisc"
4527     ;;
4528     "Power Macintosh"|ppc*|powerpc*)
4529         arch="ppc"
4530     ;;
4531     s390|s390x)
4532         arch="s390"
4533     ;;
4534     sh4|sh)
4535         arch="sh4"
4536     ;;
4537     sun4*|sparc*)
4538         arch="sparc"
4539     ;;
4540     tilegx|tile-gx)
4541         arch="tilegx"
4542     ;;
4543     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4544         arch="x86"
4545     ;;
4546 esac
4547
4548 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4549 enable $arch
4550
4551 # Add processor-specific flags
4552 if enabled aarch64; then
4553
4554     case $cpu in
4555         armv*)
4556             cpuflags="-march=$cpu"
4557         ;;
4558         *)
4559             cpuflags="-mcpu=$cpu"
4560         ;;
4561     esac
4562
4563 elif enabled alpha; then
4564
4565     cpuflags="-mcpu=$cpu"
4566
4567 elif enabled arm; then
4568
4569     check_arm_arch() {
4570         check_cpp_condition stddef.h \
4571             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4572             $cpuflags
4573     }
4574
4575     probe_arm_arch() {
4576         if   check_arm_arch 4;        then echo armv4
4577         elif check_arm_arch 4T;       then echo armv4t
4578         elif check_arm_arch 5;        then echo armv5
4579         elif check_arm_arch 5E;       then echo armv5e
4580         elif check_arm_arch 5T;       then echo armv5t
4581         elif check_arm_arch 5TE;      then echo armv5te
4582         elif check_arm_arch 5TEJ;     then echo armv5te
4583         elif check_arm_arch 6;        then echo armv6
4584         elif check_arm_arch 6J;       then echo armv6j
4585         elif check_arm_arch 6K;       then echo armv6k
4586         elif check_arm_arch 6Z;       then echo armv6z
4587         elif check_arm_arch 6ZK;      then echo armv6zk
4588         elif check_arm_arch 6T2;      then echo armv6t2
4589         elif check_arm_arch 7;        then echo armv7
4590         elif check_arm_arch 7A  7_A;  then echo armv7-a
4591         elif check_arm_arch 7S;       then echo armv7-a
4592         elif check_arm_arch 7R  7_R;  then echo armv7-r
4593         elif check_arm_arch 7M  7_M;  then echo armv7-m
4594         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4595         elif check_arm_arch 8A  8_A;  then echo armv8-a
4596         fi
4597     }
4598
4599     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4600
4601     case $cpu in
4602         armv*)
4603             cpuflags="-march=$cpu"
4604             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4605         ;;
4606         *)
4607             cpuflags="-mcpu=$cpu"
4608             case $cpu in
4609                 cortex-a*)                               subarch=armv7a  ;;
4610                 cortex-r*)                               subarch=armv7r  ;;
4611                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4612                 arm11*)                                  subarch=armv6   ;;
4613                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4614                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4615                 *)                             subarch=$(probe_arm_arch) ;;
4616             esac
4617         ;;
4618     esac
4619
4620     case "$subarch" in
4621         armv5t*)    enable fast_clz                ;;
4622         armv[6-8]*)
4623             enable fast_clz
4624             disabled fast_unaligned || enable fast_unaligned
4625             ;;
4626     esac
4627
4628 elif enabled avr32; then
4629
4630     case $cpu in
4631         ap7[02]0[0-2])
4632             subarch="avr32_ap"
4633             cpuflags="-mpart=$cpu"
4634         ;;
4635         ap)
4636             subarch="avr32_ap"
4637             cpuflags="-march=$cpu"
4638         ;;
4639         uc3[ab]*)
4640             subarch="avr32_uc"
4641             cpuflags="-mcpu=$cpu"
4642         ;;
4643         uc)
4644             subarch="avr32_uc"
4645             cpuflags="-march=$cpu"
4646         ;;
4647     esac
4648
4649 elif enabled bfin; then
4650
4651     cpuflags="-mcpu=$cpu"
4652
4653 elif enabled mips; then
4654
4655     cpuflags="-march=$cpu"
4656
4657     if [ "$cpu" != "generic" ]; then
4658         disable mips32r2
4659         disable mips32r5
4660         disable mips64r2
4661         disable mips32r6
4662         disable mips64r6
4663         disable loongson2
4664         disable loongson3
4665
4666         case $cpu in
4667             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4668                 enable mips32r2
4669                 disable msa
4670             ;;
4671             p5600|i6400|p6600)
4672                 disable mipsdsp
4673                 disable mipsdspr2
4674             ;;
4675             loongson*)
4676                 enable loongson2
4677                 enable loongson3
4678                 enable local_aligned
4679                 enable simd_align_16
4680                 enable fast_64bit
4681                 enable fast_clz
4682                 enable fast_cmov
4683                 enable fast_unaligned
4684                 disable aligned_stack
4685                 disable mipsfpu
4686                 disable mipsdsp
4687                 disable mipsdspr2
4688                 case $cpu in
4689                     loongson3*)
4690                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4691                     ;;
4692                     loongson2e)
4693                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4694                     ;;
4695                     loongson2f)
4696                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4697                     ;;
4698                 esac
4699             ;;
4700             *)
4701                 # Unknown CPU. Disable everything.
4702                 warn "unknown CPU. Disabling all MIPS optimizations."
4703                 disable mipsfpu
4704                 disable mipsdsp
4705                 disable mipsdspr2
4706                 disable msa
4707                 disable mmi
4708             ;;
4709         esac
4710
4711         case $cpu in
4712             24kc)
4713                 disable mipsfpu
4714                 disable mipsdsp
4715                 disable mipsdspr2
4716             ;;
4717             24kf*)
4718                 disable mipsdsp
4719                 disable mipsdspr2
4720             ;;
4721             24kec|34kc|1004kc)
4722                 disable mipsfpu
4723                 disable mipsdspr2
4724             ;;
4725             24kef*|34kf*|1004kf*)
4726                 disable mipsdspr2
4727             ;;
4728             74kc)
4729                 disable mipsfpu
4730             ;;
4731             p5600)
4732                 enable mips32r5
4733                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4734             ;;
4735             i6400)
4736                 enable mips64r6
4737                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4738             ;;
4739             p6600)
4740                 enable mips64r6
4741                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4742             ;;
4743         esac
4744     else
4745         # We do not disable anything. Is up to the user to disable the unwanted features.
4746         warn 'generic cpu selected'
4747     fi
4748
4749 elif enabled ppc; then
4750
4751     disable ldbrx
4752
4753     case $(tolower $cpu) in
4754         601|ppc601|powerpc601)
4755             cpuflags="-mcpu=601"
4756             disable altivec
4757         ;;
4758         603*|ppc603*|powerpc603*)
4759             cpuflags="-mcpu=603"
4760             disable altivec
4761         ;;
4762         604*|ppc604*|powerpc604*)
4763             cpuflags="-mcpu=604"
4764             disable altivec
4765         ;;
4766         g3|75*|ppc75*|powerpc75*)
4767             cpuflags="-mcpu=750"
4768             disable altivec
4769         ;;
4770         g4|745*|ppc745*|powerpc745*)
4771             cpuflags="-mcpu=7450"
4772             disable vsx
4773         ;;
4774         74*|ppc74*|powerpc74*)
4775             cpuflags="-mcpu=7400"
4776             disable vsx
4777         ;;
4778         g5|970|ppc970|powerpc970)
4779             cpuflags="-mcpu=970"
4780             disable vsx
4781         ;;
4782         power[3-6]*)
4783             cpuflags="-mcpu=$cpu"
4784             disable vsx
4785         ;;
4786         power[7-8]*)
4787             cpuflags="-mcpu=$cpu"
4788         ;;
4789         cell)
4790             cpuflags="-mcpu=cell"
4791             enable ldbrx
4792             disable vsx
4793         ;;
4794         e500mc)
4795             cpuflags="-mcpu=e500mc"
4796             disable altivec
4797         ;;
4798         e500v2)
4799             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4800             disable altivec
4801             disable dcbzl
4802         ;;
4803         e500)
4804             cpuflags="-mcpu=8540 -mhard-float"
4805             disable altivec
4806             disable dcbzl
4807         ;;
4808     esac
4809
4810 elif enabled sparc; then
4811
4812     case $cpu in
4813         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4814             cpuflags="-mcpu=$cpu"
4815         ;;
4816         ultrasparc*|niagara[234])
4817             cpuflags="-mcpu=$cpu"
4818         ;;
4819     esac
4820
4821 elif enabled x86; then
4822
4823     case $cpu in
4824         i[345]86|pentium)
4825             cpuflags="-march=$cpu"
4826             disable i686
4827             disable mmx
4828         ;;
4829         # targets that do NOT support nopl and conditional mov (cmov)
4830         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4831             cpuflags="-march=$cpu"
4832             disable i686
4833         ;;
4834         # targets that do support nopl and conditional mov (cmov)
4835         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4836         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4837         |amdfam10|barcelona|b[dt]ver*|znver*)
4838             cpuflags="-march=$cpu"
4839             enable i686
4840             enable fast_cmov
4841         ;;
4842         # targets that do support conditional mov but on which it's slow
4843         pentium4|pentium4m|prescott|nocona)
4844             cpuflags="-march=$cpu"
4845             enable i686
4846             disable fast_cmov
4847         ;;
4848     esac
4849
4850 fi
4851
4852 if [ "$cpu" != generic ]; then
4853     add_cflags  $cpuflags
4854     add_asflags $cpuflags
4855     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4856 fi
4857
4858 # compiler sanity check
4859 check_exec <<EOF
4860 int main(void){ return 0; }
4861 EOF
4862 if test "$?" != 0; then
4863     echo "$cc is unable to create an executable file."
4864     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4865         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4866         echo "Only do this if you know what cross compiling means."
4867     fi
4868     die "C compiler test failed."
4869 fi
4870
4871 add_cppflags -D_ISOC99_SOURCE
4872 add_cxxflags -D__STDC_CONSTANT_MACROS
4873 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4874
4875 # some compilers silently accept -std=c11, so we also need to check that the
4876 # version macro is defined properly
4877 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4878     add_cflags -std=c11 ||
4879     check_cflags -std=c99
4880
4881 check_cppflags -D_FILE_OFFSET_BITS=64
4882 check_cppflags -D_LARGEFILE_SOURCE
4883
4884 add_host_cppflags -D_ISOC99_SOURCE
4885 check_host_cflags -std=c99
4886 check_host_cflags -Wall
4887 check_host_cflags $host_cflags_speed
4888
4889 check_64bit(){
4890     arch32=$1
4891     arch64=$2
4892     expr=$3
4893     check_code cc "" "int test[2*($expr) - 1]" &&
4894         subarch=$arch64 || subarch=$arch32
4895 }
4896
4897 case "$arch" in
4898     aarch64|alpha|ia64)
4899         spic=$shared
4900     ;;
4901     mips)
4902         check_64bit mips mips64 '_MIPS_SIM > 1'
4903         spic=$shared
4904     ;;
4905     parisc)
4906         check_64bit parisc parisc64 'sizeof(void *) > 4'
4907         spic=$shared
4908     ;;
4909     ppc)
4910         check_64bit ppc ppc64 'sizeof(void *) > 4'
4911         spic=$shared
4912     ;;
4913     s390)
4914         check_64bit s390 s390x 'sizeof(void *) > 4'
4915         spic=$shared
4916     ;;
4917     sparc)
4918         check_64bit sparc sparc64 'sizeof(void *) > 4'
4919         spic=$shared
4920     ;;
4921     x86)
4922         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4923         # Treat x32 as x64 for now. Note it also needs spic=$shared
4924         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4925             subarch=x86_64
4926         if test "$subarch" = "x86_64"; then
4927             spic=$shared
4928         fi
4929     ;;
4930     ppc)
4931         check_cc <<EOF && subarch="ppc64"
4932         int test[(int)sizeof(char*) - 7];
4933 EOF
4934     ;;
4935 esac
4936
4937 enable $subarch
4938 enabled spic && enable_weak pic
4939
4940 enabled x86_64 && objformat=elf64 || objformat="elf32"
4941
4942 # OS specific
4943 case $target_os in
4944     aix)
4945         SHFLAGS=-shared
4946         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4947         enabled shared && add_ldflags -Wl,-brtl
4948         ;;
4949     android)
4950         disable symver
4951         enable section_data_rel_ro
4952         SLIB_INSTALL_NAME='$(SLIBNAME)'
4953         SLIB_INSTALL_LINKS=
4954         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4955         ;;
4956     haiku)
4957         prefix_default="/boot/common"
4958         network_extralibs="-lnetwork"
4959         host_extralibs=
4960         ;;
4961     sunos)
4962         SHFLAGS='-shared -Wl,-h,$$(@F)'
4963         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4964         network_extralibs="-lsocket -lnsl"
4965         add_cppflags -D__EXTENSIONS__
4966         # When using suncc to build, the Solaris linker will mark
4967         # an executable with each instruction set encountered by
4968         # the Solaris assembler.  As our libraries contain their own
4969         # guards for processor-specific code, instead suppress
4970         # generation of the HWCAPS ELF section on Solaris x86 only.
4971         enabled_all suncc x86 &&
4972             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4973             add_ldflags -Wl,-M,mapfile
4974         nm_default='nm -P -g'
4975         version_script='-M'
4976         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4977         ;;
4978     netbsd)
4979         disable symver
4980         oss_indev_extralibs="-lossaudio"
4981         oss_outdev_extralibs="-lossaudio"
4982         enabled gcc || check_ldflags -Wl,-zmuldefs
4983         ;;
4984     openbsd|bitrig)
4985         disable symver
4986         SHFLAGS='-shared'
4987         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4988         SLIB_INSTALL_LINKS=
4989         oss_indev_extralibs="-lossaudio"
4990         oss_outdev_extralibs="-lossaudio"
4991         ;;
4992     dragonfly)
4993         disable symver
4994         ;;
4995     freebsd)
4996         ;;
4997     bsd/os)
4998         add_extralibs -lpoll -lgnugetopt
4999         strip="strip -d"
5000         ;;
5001     darwin)
5002         enabled ppc && add_asflags -force_cpusubtype_ALL
5003         install_name_dir_default='$(SHLIBDIR)'
5004         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5005         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5006         strip="${strip} -x"
5007         add_ldflags -Wl,-dynamic,-search_paths_first
5008         check_cflags -Werror=partial-availability
5009         SLIBSUF=".dylib"
5010         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5011         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5012         enabled x86_64 && objformat="macho64" || objformat="macho32"
5013         enabled_any pic shared x86_64 ||
5014             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5015         check_header dispatch/dispatch.h &&
5016             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5017         if test -n "$sysroot"; then
5018             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5019             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5020         fi
5021         version_script='-exported_symbols_list'
5022         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5023         ;;
5024     msys*)
5025         die "Native MSYS builds are discouraged, please use the MINGW environment."
5026         ;;
5027     mingw32*|mingw64*)
5028         if test $target_os = "mingw32ce"; then
5029             disable network
5030         else
5031             target_os=mingw32
5032         fi
5033         LIBTARGET=i386
5034         if enabled x86_64; then
5035             LIBTARGET="i386:x86-64"
5036         elif enabled arm; then
5037             LIBTARGET=arm-wince
5038         fi
5039         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5040         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5041         shlibdir_default="$bindir_default"
5042         SLIBPREF=""
5043         SLIBSUF=".dll"
5044         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5045         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5046         dlltool="${cross_prefix}dlltool"
5047         if check_cmd lib.exe -list; then
5048             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5049             if enabled x86_64; then
5050                 LIBTARGET=x64
5051             fi
5052         elif check_cmd $dlltool --version; then
5053             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5054         fi
5055         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5056         SLIB_INSTALL_LINKS=
5057         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5058         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5059         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
5060         enabled x86_64 && objformat="win64" || objformat="win32"
5061         ranlib=:
5062         enable dos_paths
5063         check_ldflags -Wl,--nxcompat,--dynamicbase
5064         # Lets work around some stupidity in binutils.
5065         # ld will strip relocations from executables even though we need them
5066         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5067         # however ld then forgets what the entry point should be (oops) so we
5068         # have to manually (re)set it.
5069         if enabled x86_32; then
5070             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5071         elif enabled x86_64; then
5072             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5073             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5074             # Set image base >4GB for extra entropy with HEASLR
5075             add_ldexeflags -Wl,--image-base,0x140000000
5076             append SHFLAGS -Wl,--image-base,0x180000000
5077         fi
5078         ;;
5079     win32|win64)
5080         disable symver
5081         if enabled shared; then
5082             # Link to the import library instead of the normal static library
5083             # for shared libs.
5084             LD_LIB='%.lib'
5085             # Cannot build both shared and static libs with MSVC or icl.
5086             disable static
5087         fi
5088         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5089         shlibdir_default="$bindir_default"
5090         SLIBPREF=""
5091         SLIBSUF=".dll"
5092         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5093         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5094         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5095         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5096         SLIB_INSTALL_LINKS=
5097         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5098         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5099         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5100         enabled x86_64 && objformat="win64" || objformat="win32"
5101         ranlib=:
5102         enable dos_paths
5103         ;;
5104     cygwin*)
5105         target_os=cygwin
5106         shlibdir_default="$bindir_default"
5107         SLIBPREF="cyg"
5108         SLIBSUF=".dll"
5109         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5110         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5111         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5112         SLIB_INSTALL_LINKS=
5113         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5114         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5115         enabled x86_64 && objformat="win64" || objformat="win32"
5116         enable dos_paths
5117         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5118         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5119         ;;
5120     *-dos|freedos|opendos)
5121         network_extralibs="-lsocket"
5122         objformat="coff"
5123         enable dos_paths
5124         add_cppflags -U__STRICT_ANSI__
5125         ;;
5126     linux)
5127         enable section_data_rel_ro
5128         enabled_any arm aarch64 && enable_weak linux_perf
5129         ;;
5130     irix*)
5131         target_os=irix
5132         ranlib="echo ignoring ranlib"
5133         ;;
5134     os/2*)
5135         strip="lxlite -CS"
5136         striptype=""
5137         objformat="aout"
5138         add_cppflags -D_GNU_SOURCE
5139         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5140         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5141         LIBSUF="_s.a"
5142         SLIBPREF=""
5143         SLIBSUF=".dll"
5144         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5145         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5146         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5147             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5148             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5149             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5150             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5151         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5152             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5153         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5154         SLIB_INSTALL_LINKS=
5155         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5156         enable dos_paths
5157         enable_weak os2threads
5158         ;;
5159     gnu/kfreebsd)
5160         add_cppflags -D_BSD_SOURCE
5161         ;;
5162     gnu)
5163         ;;
5164     qnx)
5165         add_cppflags -D_QNX_SOURCE
5166         network_extralibs="-lsocket"
5167         ;;
5168     symbian)
5169         SLIBSUF=".dll"
5170         enable dos_paths
5171         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5172         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5173         add_ldflags -Wl,--target1-abs,--no-undefined \
5174                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5175                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5176         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5177                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5178                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5179         ;;
5180     osf1)
5181         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5182         ;;
5183     minix)
5184         ;;
5185     none)
5186         ;;
5187     *)
5188         die "Unknown OS '$target_os'."
5189         ;;
5190 esac
5191
5192 # test if creating links works
5193 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5194 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5195 mkdir "$link_dest"
5196 $ln_s "$link_dest" "$link_name"
5197 touch "$link_dest/test_file"
5198 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5199     # create link to source path
5200     [ -e src ] && rm src
5201     $ln_s "$source_path" src
5202     source_link=src
5203 else
5204     # creating directory links doesn't work
5205     # fall back to using the full source path
5206     source_link="$source_path"
5207 fi
5208 # cleanup
5209 rm -r "$link_dest"
5210 rm -r "$link_name"
5211
5212 # determine libc flavour
5213
5214 probe_libc(){
5215     pfx=$1
5216     pfx_no_=${pfx%_}
5217     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5218     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5219         eval ${pfx}libc_type=uclibc
5220         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5221     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5222         eval ${pfx}libc_type=glibc
5223         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5224     # MinGW headers can be installed on Cygwin, so check for newlib first.
5225     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5226         eval ${pfx}libc_type=newlib
5227         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5228     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5229     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5230         eval ${pfx}libc_type=mingw64
5231         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5232             add_compat msvcrt/snprintf.o
5233             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5234         fi
5235         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5236         eval test \$${pfx_no_}cc_type = "gcc" &&
5237             add_${pfx}cppflags -D__printf__=__gnu_printf__
5238     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5239          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5240         eval ${pfx}libc_type=mingw32
5241         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5242             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5243             die "ERROR: MinGW32 runtime version must be >= 3.15."
5244         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5245         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5246             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5247         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5248             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5249         eval test \$${pfx_no_}cc_type = "gcc" &&
5250             add_${pfx}cppflags -D__printf__=__gnu_printf__
5251     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5252         eval ${pfx}libc_type=msvcrt
5253         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5254             if [ "$pfx" = host_ ]; then
5255                 add_host_cppflags -Dsnprintf=_snprintf
5256             else
5257                 add_compat strtod.o strtod=avpriv_strtod
5258                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5259                                              _snprintf=avpriv_snprintf  \
5260                                              vsnprintf=avpriv_vsnprintf
5261             fi
5262         fi
5263         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5264         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5265         # 0x601 by default unless something else is set by the user.
5266         # This can easily lead to us detecting functions only present
5267         # in such new versions and producing binaries requiring windows 7.0.
5268         # Therefore explicitly set the default to XP unless the user has
5269         # set something else on the command line.
5270         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5271         # family. For these cases, configure is free to use any functions
5272         # found in the SDK headers by default. (Alternatively, we could force
5273         # _WIN32_WINNT to 0x0602 in that case.)
5274         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5275             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5276 #ifdef WINAPI_FAMILY
5277 #include <winapifamily.h>
5278 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5279 #error not desktop
5280 #endif
5281 #endif
5282 EOF
5283         if [ "$pfx" = "" ]; then
5284             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5285             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5286         fi
5287     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5288         eval ${pfx}libc_type=klibc
5289     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5290         eval ${pfx}libc_type=bionic
5291     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5292         eval ${pfx}libc_type=solaris
5293         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5294     fi
5295     check_${pfx}cc <<EOF
5296 #include <time.h>
5297 void *v = localtime_r;
5298 EOF
5299 test "$?" != 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
5300 #include <time.h>
5301 void *v = localtime_r;
5302 EOF
5303
5304 }
5305
5306 probe_libc
5307 test -n "$libc_type" && enable libc_$libc_type
5308 probe_libc host_
5309 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5310
5311 # hacks for compiler/libc/os combinations
5312
5313 case $libc_type in
5314     bionic)
5315         add_compat strtod.o strtod=avpriv_strtod
5316         ;;
5317     glibc)
5318         if enabled tms470; then
5319             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5320             add_cppflags -D__USER_LABEL_PREFIX__=
5321             add_cppflags -D__builtin_memset=memset
5322             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5323             add_cflags   -pds=48    # incompatible redefinition of macro
5324         elif enabled ccc; then
5325             add_ldflags -Wl,-z,now  # calls to libots crash without this
5326         fi
5327         ;;
5328 esac
5329
5330 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5331     add_cppflags '-I\$(SRC_PATH)/compat/float'
5332
5333 esc(){
5334     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5335 }
5336
5337 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5338
5339 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5340
5341 set_default libdir
5342 : ${shlibdir_default:="$libdir"}
5343 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5344
5345 set_default $PATHS_LIST
5346 set_default nm
5347
5348 # we need to build at least one lib type
5349 if ! enabled_any static shared; then
5350     cat <<EOF
5351 At least one library type must be built.
5352 Specify --enable-static to build the static libraries or --enable-shared to
5353 build the shared libraries as well. To only build the shared libraries specify
5354 --disable-static in addition to --enable-shared.
5355 EOF
5356     exit 1
5357 fi
5358
5359 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5360
5361 enable_weak_pic() {
5362     disabled pic && return
5363     enable pic
5364     add_cppflags -DPIC
5365     case "$target_os" in
5366     mingw*|cygwin*)
5367         ;;
5368     *)
5369         add_cflags -fPIC
5370         ;;
5371     esac
5372     add_asflags  -fPIC
5373 }
5374
5375 enabled pic && enable_weak_pic
5376
5377 check_cc <<EOF || die "Symbol mangling check failed."
5378 int ff_extern;
5379 EOF
5380 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5381 extern_prefix=${sym%%ff_extern*}
5382
5383 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5384
5385 _restrict=
5386 for restrict_keyword in restrict __restrict__ __restrict; do
5387     check_cc <<EOF && _restrict=$restrict_keyword && break
5388 void foo(char * $restrict_keyword p);
5389 EOF
5390 done
5391
5392 check_cc <<EOF && enable pragma_deprecated
5393 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5394 EOF
5395
5396 check_cc <<EOF && enable attribute_packed
5397 struct { int x; } __attribute__((packed)) x;
5398 EOF
5399
5400 check_cc <<EOF && enable attribute_may_alias
5401 union { int x; } __attribute__((may_alias)) x;
5402 EOF
5403
5404 check_cc <<EOF || die "endian test failed"
5405 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5406 EOF
5407 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5408
5409 check_cc <<EOF && enable const_nan
5410 #include <math.h>
5411 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5412 EOF
5413
5414 if ! enabled ppc64 || enabled bigendian; then
5415     disable vsx
5416 fi
5417
5418 check_gas() {
5419     log "check_gas using '$as' as AS"
5420     # :vararg is used on aarch64, arm and ppc altivec
5421     check_as <<EOF || return 1
5422 .macro m n, y:vararg=0
5423 \n: .int \y
5424 .endm
5425 m x
5426 EOF
5427     # .altmacro is only used in arm asm
5428     ! enabled arm || check_as <<EOF || return 1
5429 .altmacro
5430 EOF
5431     enable gnu_as
5432     return 0
5433 }
5434
5435 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5436     nogas=:
5437     enabled_any arm aarch64 && nogas=die
5438     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5439     as_noop=-v
5440
5441     case $as_type in
5442         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5443         gcc)  gaspp_as_type=gas ;;
5444         *)    gaspp_as_type=$as_type ;;
5445     esac
5446
5447     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5448
5449     test "${as#*gas-preprocessor.pl}" != "$as" ||
5450     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5451         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5452
5453     if ! check_gas ; then
5454         as=${gas:=$as}
5455         check_gas || \
5456             $nogas "GNU assembler not found, install/update gas-preprocessor"
5457     fi
5458
5459     check_as <<EOF && enable as_func
5460 .func test
5461 .endfunc
5462 EOF
5463 fi
5464
5465 check_inline_asm inline_asm_labels '"1:\n"'
5466
5467 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5468
5469 if enabled aarch64; then
5470     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5471     # internal assembler in clang 3.3 does not support this instruction
5472     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5473     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5474
5475     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5476
5477 elif enabled alpha; then
5478
5479     check_cflags -mieee
5480
5481 elif enabled arm; then
5482
5483     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5484
5485     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5486 float func(float a, float b){ return a+b; }
5487 EOF
5488
5489     enabled thumb && check_cflags -mthumb || check_cflags -marm
5490
5491     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5492         enable vfp_args
5493     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5494         enable vfp_args
5495     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5496         case "${cross_prefix:-$cc}" in
5497             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5498             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5499 __asm__ (".eabi_attribute 28, 1");
5500 int main(void) { return 0; }
5501 EOF
5502         esac
5503         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5504     fi
5505
5506     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5507     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5508     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5509     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5510     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5511     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5512     enabled setend  && check_insn setend  'setend be'
5513
5514     [ $target_os = linux ] || [ $target_os = android ] ||
5515         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5516             $ARCH_EXT_LIST_ARM
5517
5518     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5519
5520     check_as <<EOF && enable as_arch_directive
5521 .arch armv7-a
5522 EOF
5523     check_as <<EOF && enable as_fpu_directive
5524 .fpu neon
5525 EOF
5526
5527     # llvm's integrated assembler supports .object_arch from llvm 3.5
5528     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5529         check_as <<EOF && enable as_object_arch
5530 .object_arch armv4
5531 EOF
5532
5533     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5534
5535 elif enabled mips; then
5536
5537     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5538     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5539     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5540
5541     # Enable minimum ISA based on selected options
5542     if enabled mips64; then
5543         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5544         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5545         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5546     else
5547         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5548         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5549         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5550         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5551     fi
5552
5553     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5554     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5555     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5556     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5557     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5558
5559     if enabled bigendian && enabled msa; then
5560         disable msa
5561     fi
5562
5563 elif enabled parisc; then
5564
5565     if enabled gcc; then
5566         case $($cc -dumpversion) in
5567             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5568         esac
5569     fi
5570
5571 elif enabled ppc; then
5572
5573     enable local_aligned
5574
5575     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5576     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5577     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5578     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5579
5580     if enabled altivec; then
5581         check_cflags -maltivec -mabi=altivec
5582
5583         # check if our compiler supports Motorola AltiVec C API
5584         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5585                                  vector signed int v2 = (vector signed int) { 1 };
5586                                  v1 = vec_add(v1, v2);" ||
5587             disable altivec
5588
5589         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5590     fi
5591
5592     if enabled vsx; then
5593         check_cflags -mvsx &&
5594         check_code cc altivec.h "int v[4] = { 0 };
5595                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5596             disable vsx
5597     fi
5598
5599     if enabled power8; then
5600         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5601     fi
5602
5603 elif enabled x86; then
5604
5605     check_builtin rdtsc    intrin.h   "__rdtsc()"
5606     check_builtin mm_empty mmintrin.h "_mm_empty()"
5607
5608     enable local_aligned
5609
5610     # check whether EBP is available on x86
5611     # As 'i' is stored on the stack, this program will crash
5612     # if the base pointer is used to access it because the
5613     # base pointer is cleared in the inline assembly code.
5614     check_exec_crash <<EOF && enable ebp_available
5615 volatile int i=0;
5616 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5617 return i;
5618 EOF
5619
5620     # check whether EBX is available on x86
5621     check_inline_asm ebx_available '""::"b"(0)' &&
5622         check_inline_asm ebx_available '"":::"%ebx"'
5623
5624     # check whether xmm clobbers are supported
5625     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5626
5627     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5628         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5629
5630     # check whether binutils is new enough to compile SSSE3/MMXEXT
5631     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5632     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5633
5634     probe_x86asm(){
5635         x86asmexe_probe=$1
5636         if check_cmd $x86asmexe_probe -v; then
5637             x86asmexe=$x86asmexe_probe
5638             x86asm_type=nasm
5639             x86asm_debug="-g -F dwarf"
5640             X86ASMDEP=
5641             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5642         elif check_cmd $x86asmexe_probe --version; then
5643             x86asmexe=$x86asmexe_probe
5644             x86asm_type=yasm
5645             x86asm_debug="-g dwarf2"
5646             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5647             X86ASM_DEPFLAGS=
5648         fi
5649         check_x86asm "movbe ecx, [5]" && enable x86asm
5650     }
5651
5652     if ! disabled_any asm mmx x86asm; then
5653         disable x86asm
5654         for program in $x86asmexe nasm yasm; do
5655             probe_x86asm $program && break
5656         done
5657         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5658         X86ASMFLAGS="-f $objformat"
5659         enabled pic               && append X86ASMFLAGS "-DPIC"
5660         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5661         case "$objformat" in
5662             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5663         esac
5664
5665         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5666         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5667         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5668         check_x86asm "CPU amdnop" || disable cpunop
5669     fi
5670
5671     case "$cpu" in
5672         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5673             disable fast_clz
5674         ;;
5675     esac
5676
5677 fi
5678
5679 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5680
5681 check_ldflags -Wl,--as-needed
5682 check_ldflags -Wl,-z,noexecstack
5683
5684 if ! disabled network; then
5685     check_func getaddrinfo $network_extralibs
5686     check_func inet_aton $network_extralibs
5687
5688     check_type netdb.h "struct addrinfo"
5689     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5690     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5691     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5692     check_type poll.h "struct pollfd"
5693     check_type netinet/sctp.h "struct sctp_event_subscribe"
5694     check_struct "sys/socket.h" "struct msghdr" msg_flags
5695     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5696     check_type netinet/in.h "struct sockaddr_in6"
5697     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5698     check_type "sys/types.h sys/socket.h" socklen_t
5699
5700     # Prefer arpa/inet.h over winsock2
5701     if check_header arpa/inet.h ; then
5702         check_func closesocket
5703     elif check_header winsock2.h ; then
5704         check_func_headers winsock2.h closesocket -lws2 &&
5705             network_extralibs="-lws2" ||
5706         { check_func_headers winsock2.h closesocket -lws2_32 &&
5707             network_extralibs="-lws2_32"; } || disable winsock2_h network
5708         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5709
5710         check_type ws2tcpip.h socklen_t
5711         check_type ws2tcpip.h "struct addrinfo"
5712         check_type ws2tcpip.h "struct group_source_req"
5713         check_type ws2tcpip.h "struct ip_mreq_source"
5714         check_type ws2tcpip.h "struct ipv6_mreq"
5715         check_type winsock2.h "struct pollfd"
5716         check_struct winsock2.h "struct sockaddr" sa_len
5717         check_type ws2tcpip.h "struct sockaddr_in6"
5718         check_type ws2tcpip.h "struct sockaddr_storage"
5719     else
5720         disable network
5721     fi
5722 fi
5723
5724 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5725 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5726 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5727 check_builtin sarestart signal.h "SA_RESTART"
5728 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5729 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5730 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5731 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5732
5733 case "$custom_allocator" in
5734     jemalloc)
5735         # jemalloc by default does not use a prefix
5736         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5737     ;;
5738     tcmalloc)
5739         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5740         malloc_prefix=tc_
5741     ;;
5742 esac
5743
5744 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5745 check_func  ${malloc_prefix}memalign            && enable memalign
5746 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5747
5748 check_func  access
5749 check_func_headers stdlib.h arc4random
5750 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5751 check_func  fcntl
5752 check_func  fork
5753 check_func  gethrtime
5754 check_func  getopt
5755 check_func  getrusage
5756 check_func  gettimeofday
5757 check_func  isatty
5758 check_func  mach_absolute_time
5759 check_func  mkstemp
5760 check_func  mmap
5761 check_func  mprotect
5762 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5763 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5764 check_func  sched_getaffinity
5765 check_func  setrlimit
5766 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5767 check_func  strerror_r
5768 check_func  sysconf
5769 check_func  sysctl
5770 check_func  usleep
5771
5772 check_func_headers conio.h kbhit
5773 check_func_headers io.h setmode
5774 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5775 check_func_headers stdlib.h getenv
5776 check_func_headers sys/stat.h lstat
5777
5778 check_func_headers windows.h GetProcessAffinityMask
5779 check_func_headers windows.h GetProcessTimes
5780 check_func_headers windows.h GetSystemTimeAsFileTime
5781 check_func_headers windows.h LoadLibrary
5782 check_func_headers windows.h MapViewOfFile
5783 check_func_headers windows.h PeekNamedPipe
5784 check_func_headers windows.h SetConsoleTextAttribute
5785 check_func_headers windows.h SetConsoleCtrlHandler
5786 check_func_headers windows.h Sleep
5787 check_func_headers windows.h VirtualAlloc
5788 check_struct windows.h "CONDITION_VARIABLE" Ptr
5789 check_func_headers glob.h glob
5790 enabled xlib &&
5791     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5792
5793 check_header d3d11.h
5794 check_header direct.h
5795 check_header dirent.h
5796 check_header dlfcn.h
5797 check_header dxgidebug.h
5798 check_header dxva.h
5799 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5800 check_header io.h
5801 check_header libcrystalhd/libcrystalhd_if.h
5802 check_header mach/mach_time.h
5803 check_header malloc.h
5804 check_header net/udplite.h
5805 check_header poll.h
5806 check_header sys/mman.h
5807 check_header sys/param.h
5808 check_header sys/resource.h
5809 check_header sys/select.h
5810 check_header sys/time.h
5811 check_header sys/un.h
5812 check_header termios.h
5813 check_header unistd.h
5814 check_header valgrind/valgrind.h
5815 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5816 check_header windows.h
5817 check_header X11/extensions/XvMClib.h
5818 check_header asm/types.h
5819
5820 # it seems there are versions of clang in some distros that try to use the
5821 # gcc headers, which explodes for stdatomic
5822 # so we also check that atomics actually work here
5823 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5824
5825 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5826 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5827 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5828 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5829
5830 enabled appkit       && check_apple_framework AppKit
5831 enabled audiotoolbox && check_apple_framework AudioToolbox
5832 enabled avfoundation && check_apple_framework AVFoundation
5833 enabled coreimage    && check_apple_framework CoreImage
5834 enabled videotoolbox && check_apple_framework VideoToolbox
5835
5836 check_apple_framework CoreFoundation
5837 check_apple_framework CoreMedia
5838 check_apple_framework CoreVideo
5839
5840 enabled avfoundation && {
5841     disable coregraphics applicationservices
5842     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5843     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5844
5845 enabled videotoolbox && {
5846     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5847     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5848 }
5849
5850 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5851
5852 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5853 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5854 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5855 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5856 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5857
5858 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5859 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5860 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5861 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5862 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5863 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5864 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5865 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5866 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5867
5868 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5869
5870 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5871
5872 if ! disabled w32threads && ! enabled pthreads; then
5873     check_func_headers "windows.h process.h" _beginthreadex &&
5874         enable w32threads || disable w32threads
5875     if ! enabled w32threads && enabled winrt; then
5876         check_func_headers "windows.h" CreateThread &&
5877             enable w32threads || disable w32threads
5878     fi
5879 fi
5880
5881 # check for some common methods of building with pthread support
5882 # do this before the optional library checks as some of them require pthreads
5883 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5884     if check_lib pthreads pthread.h pthread_join   -pthread &&
5885        check_lib pthreads pthread.h pthread_create -pthread; then
5886         add_cflags -pthread
5887     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5888          check_lib pthreads pthread.h pthread_create -pthreads; then
5889         add_cflags -pthreads
5890     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5891          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5892         add_cflags -ldl -pthread
5893     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5894          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5895         :
5896     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5897          check_lib pthreads pthread.h pthread_create -lpthread; then
5898         :
5899     elif check_func pthread_join && check_func pthread_create; then
5900         enable pthreads
5901     fi
5902     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5903 fi
5904
5905
5906 if enabled pthreads; then
5907   check_func pthread_cancel $pthreads_extralibs
5908 fi
5909
5910 enabled pthreads &&
5911     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5912
5913 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5914 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5915 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5916
5917 # On some systems dynamic loading requires no extra linker flags
5918 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5919
5920 check_lib libm math.h sin -lm
5921
5922 atan2f_args=2
5923 copysign_args=2
5924 hypot_args=2
5925 ldexpf_args=2
5926 powf_args=2
5927
5928 for func in $MATH_FUNCS; do
5929     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5930 done
5931
5932 for func in $COMPLEX_FUNCS; do
5933     eval check_complexfunc $func \${${func}_args:-1}
5934 done
5935
5936 # these are off by default, so fail if requested and not available
5937 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5938 enabled cuvid             && { enabled cuda ||
5939                                die "ERROR: CUVID requires CUDA"; }
5940 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5941 enabled decklink          && { require_header DeckLinkAPI.h &&
5942                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5943 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5944 enabled frei0r            && require_header frei0r.h
5945 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5946 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5947 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5948 enabled ladspa            && require_header ladspa.h
5949 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5950 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5951 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5952 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5953 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5954                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5955                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5956 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5957 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5958 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5959 enabled libfdk_aac        && { use_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5960                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5961                                  warn "using libfdk without pkg-config"; } }
5962 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"
5963 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5964 enabled fontconfig        && enable libfontconfig
5965 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5966 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5967 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5968 enabled libgme            && { use_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5969                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5970 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5971                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5972                                done || die "ERROR: libgsm not found"; }
5973 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5974 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5975 # While it may appear that require is being used as a pkg-config
5976 # fallback for libmfx, it is actually being used to detect a different
5977 # installation route altogether.  If libmfx is installed via the Intel
5978 # Media SDK or Intel Media Server Studio, these don't come with
5979 # pkg-config support.  Instead, users should make sure that the build
5980 # can find the libraries and headers through other means.
5981 enabled libmfx            && { use_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5982                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5983 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5984 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5985 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5986 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5987                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5988                                die "ERROR: libnpp not found"; }
5989 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5990 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5991 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5992                                { use_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5993                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5994                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5995 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5996 enabled libopenjpeg       && { use_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5997                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5998 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5999 enabled libopus           && {
6000     enabled libopus_decoder && {
6001         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6002     }
6003     enabled libopus_encoder && {
6004         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6005     }
6006 }
6007 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6008 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6009 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6010 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6011 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6012 enabled libsmbclient      && { use_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6013                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6014 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6015 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6016 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6017 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
6018 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6019 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6020 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6021                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6022                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6023 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6024 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6025 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
6026 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6027 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6028                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6029
6030 enabled libvpx            && {
6031     enabled libvpx_vp8_decoder && {
6032         use_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6033             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
6034                 die "ERROR: libvpx decoder version must be >=0.9.1";
6035     }
6036     enabled libvpx_vp8_encoder && {
6037         use_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6038             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
6039                 die "ERROR: libvpx encoder version must be >=0.9.7";
6040     }
6041     enabled libvpx_vp9_decoder && {
6042         use_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6043             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
6044     }
6045     enabled libvpx_vp9_encoder && {
6046         use_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6047             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6048     }
6049     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6050         die "libvpx enabled but no supported decoders found"
6051     fi
6052 }
6053
6054 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6055 enabled libwebp           && {
6056     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6057     enabled libwebp_anim_encoder && use_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6058 enabled libx264           && { use_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6059                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6060                                  warn "using libx264 without pkg-config"; } } &&
6061                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6062                              { check_cpp_condition x264.h "X264_MPEG2" &&
6063                                enable libx262; }
6064 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6065                              require_cpp_condition x265.h "X265_BUILD >= 68"
6066 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6067 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6068 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
6069 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6070 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6071                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6072                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6073 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6074 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6075 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6076                                { ! enabled cross_compile &&
6077                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6078                                  add_ldflags -L/opt/vc/lib/ &&
6079                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6080                                die "ERROR: mmal not found" &&
6081                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6082 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6083                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6084                                die "ERROR: openal not found"; } &&
6085                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6086                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6087 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6088                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6089                                die "ERROR: opencl not found"; } &&
6090                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6091                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6092                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6093 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6094                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6095                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6096                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6097                                die "ERROR: opengl not found."
6098                              }
6099 enabled omx               && require_header OMX_Core.h
6100 enabled omx_rpi           && { check_header OMX_Core.h ||
6101                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6102                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6103 enabled openssl           && { use_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6104                                use_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6105                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6106                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6107                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6108                                die "ERROR: openssl not found"; }
6109 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
6110                                  die "ERROR : Rockchip MPP was not found."; } &&
6111                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
6112                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
6113                                { enabled libdrm ||
6114                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6115                              }
6116
6117 if enabled gcrypt; then
6118     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6119     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6120         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6121         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6122         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6123             die "ERROR: gcrypt not found"
6124         add_cflags $gcrypt_cflags
6125     else
6126         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6127     fi
6128 fi
6129
6130 if enabled sdl2; then
6131     SDL2_CONFIG="${cross_prefix}sdl2-config"
6132     if check_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6133         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6134             disable sdl2
6135     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6136         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6137         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6138         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6139         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6140         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6141             enable sdl2
6142     fi
6143     if test $target_os = "mingw32"; then
6144         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6145     fi
6146 fi
6147
6148 if enabled decklink; then
6149     case $target_os in
6150         mingw32*|mingw64*|win32|win64)
6151             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6152             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6153             ;;
6154     esac
6155 fi
6156
6157 enabled securetransport &&
6158     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6159     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6160         disable securetransport
6161
6162 enabled schannel &&
6163     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6164     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6165     schannel_extralibs="-lsecur32" ||
6166         disable schannel
6167
6168 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6169 enabled makeinfo \
6170     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6171     && enable makeinfo_html || disable makeinfo_html
6172 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6173 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6174 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6175 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6176
6177 # check V4L2 codecs available in the API
6178 check_header linux/fb.h
6179 check_header linux/videodev2.h
6180 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6181 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6182 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6183 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6184 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6185 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6186 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6187 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6188 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6189 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6190 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6191
6192 check_header sys/videoio.h
6193 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6194
6195 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6196 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6197 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6198 # w32api 3.12 had it defined wrong
6199 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6200
6201 check_type "dshow.h" IBaseFilter
6202
6203 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6204 { check_header dev/bktr/ioctl_meteor.h &&
6205   check_header dev/bktr/ioctl_bt848.h; } ||
6206 { check_header machine/ioctl_meteor.h &&
6207   check_header machine/ioctl_bt848.h; } ||
6208 { check_header dev/video/meteor/ioctl_meteor.h &&
6209   check_header dev/video/bktr/ioctl_bt848.h; } ||
6210 check_header dev/ic/bt8xx.h
6211
6212 if check_struct sys/soundcard.h audio_buf_info bytes; then
6213     enable_sanitized sys/soundcard.h
6214 else
6215     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6216     #include <sys/soundcard.h>
6217     audio_buf_info abc;
6218 EOF
6219 fi
6220 check_header soundcard.h
6221
6222 enabled alsa && use_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6223     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6224
6225 enabled libjack &&
6226     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6227
6228 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6229
6230 if enabled libcdio; then
6231     use_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6232     use_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6233     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6234     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6235     die "ERROR: No usable libcdio/cdparanoia found"
6236 fi
6237
6238 enabled libxcb && use_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6239     disable libxcb_shm libxcb_shape libxcb_xfixes
6240
6241 if enabled libxcb; then
6242     enabled libxcb_shm    && use_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6243     enabled libxcb_shape  && use_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6244     enabled libxcb_xfixes && use_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6245 fi
6246
6247 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6248
6249 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6250 # the desktop api partition
6251 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6252 #ifdef WINAPI_FAMILY
6253 #include <winapifamily.h>
6254 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6255 #error desktop, not uwp
6256 #else
6257 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6258 #endif
6259 #else
6260 #error no family set
6261 #endif
6262 EOF
6263
6264 enabled vaapi &&
6265     check_lib vaapi va/va.h vaInitialize -lva
6266
6267 enabled vaapi &&
6268     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6269     disable vaapi
6270
6271 enabled vaapi &&
6272     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6273
6274 enabled vaapi &&
6275     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6276
6277 enabled vaapi &&
6278     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6279     enable vaapi_1
6280
6281 enabled vdpau &&
6282     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6283     disable vdpau
6284
6285 enabled vdpau &&
6286     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6287
6288 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6289
6290 if enabled x86; then
6291     case $target_os in
6292         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6293             ;;
6294         *)
6295             disable cuda cuvid nvenc
6296             ;;
6297     esac
6298 else
6299     disable cuda cuvid nvenc
6300 fi
6301
6302 enabled nvenc &&
6303     check_cc -I$source_path <<EOF || disable nvenc
6304 #include "compat/nvenc/nvEncodeAPI.h"
6305 NV_ENCODE_API_FUNCTION_LIST flist;
6306 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6307 int main(void) { return 0; }
6308 EOF
6309
6310 # Funny iconv installations are not unusual, so check it after all flags have been set
6311 if enabled libc_iconv; then
6312     check_func_headers iconv.h iconv
6313 elif enabled iconv; then
6314     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6315 fi
6316
6317 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6318
6319 # add some useful compiler flags if supported
6320 check_cflags -Wdeclaration-after-statement
6321 check_cflags -Wall
6322 check_cflags -Wdisabled-optimization
6323 check_cflags -Wpointer-arith
6324 check_cflags -Wredundant-decls
6325 check_cflags -Wwrite-strings
6326 check_cflags -Wtype-limits
6327 check_cflags -Wundef
6328 check_cflags -Wmissing-prototypes
6329 check_cflags -Wno-pointer-to-int-cast
6330 check_cflags -Wstrict-prototypes
6331 check_cflags -Wempty-body
6332
6333 if enabled extra_warnings; then
6334     check_cflags -Wcast-qual
6335     check_cflags -Wextra
6336     check_cflags -Wpedantic
6337 fi
6338
6339 check_disable_warning(){
6340     warning_flag=-W${1#-Wno-}
6341     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6342 }
6343
6344 test_cflags -Werror=unused-command-line-argument &&
6345     append unknown_warning_flags "-Werror=unused-command-line-argument"
6346 test_cflags -Werror=unknown-warning-option &&
6347     append unknown_warning_flags "-Werror=unknown-warning-option"
6348
6349 check_disable_warning -Wno-parentheses
6350 check_disable_warning -Wno-switch
6351 check_disable_warning -Wno-format-zero-length
6352 check_disable_warning -Wno-pointer-sign
6353 check_disable_warning -Wno-unused-const-variable
6354 check_disable_warning -Wno-bool-operation
6355
6356 check_disable_warning_headers(){
6357     warning_flag=-W${1#-Wno-}
6358     test_cflags $warning_flag && add_cflags_headers $1
6359 }
6360
6361 check_disable_warning_headers -Wno-deprecated-declarations
6362 check_disable_warning_headers -Wno-unused-variable
6363
6364 check_cc <<EOF && enable blocks_extension
6365 void (^block)(void);
6366 EOF
6367
6368 # add some linker flags
6369 check_ldflags -Wl,--warn-common
6370 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6371 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6372 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6373
6374 # add some strip flags
6375 check_stripflags -x
6376
6377 enabled neon_clobber_test &&
6378     check_ldflags -Wl,--wrap,avcodec_open2              \
6379                   -Wl,--wrap,avcodec_decode_audio4      \
6380                   -Wl,--wrap,avcodec_decode_video2      \
6381                   -Wl,--wrap,avcodec_decode_subtitle2   \
6382                   -Wl,--wrap,avcodec_encode_audio2      \
6383                   -Wl,--wrap,avcodec_encode_video2      \
6384                   -Wl,--wrap,avcodec_encode_subtitle    \
6385                   -Wl,--wrap,avcodec_send_packet        \
6386                   -Wl,--wrap,avcodec_receive_packet     \
6387                   -Wl,--wrap,avcodec_send_frame         \
6388                   -Wl,--wrap,avcodec_receive_frame      \
6389                   -Wl,--wrap,swr_convert                \
6390                   -Wl,--wrap,avresample_convert ||
6391     disable neon_clobber_test
6392
6393 enabled xmm_clobber_test &&
6394     check_ldflags -Wl,--wrap,avcodec_open2              \
6395                   -Wl,--wrap,avcodec_decode_audio4      \
6396                   -Wl,--wrap,avcodec_decode_video2      \
6397                   -Wl,--wrap,avcodec_decode_subtitle2   \
6398                   -Wl,--wrap,avcodec_encode_audio2      \
6399                   -Wl,--wrap,avcodec_encode_video2      \
6400                   -Wl,--wrap,avcodec_encode_subtitle    \
6401                   -Wl,--wrap,avcodec_send_packet        \
6402                   -Wl,--wrap,avcodec_receive_packet     \
6403                   -Wl,--wrap,avcodec_send_frame         \
6404                   -Wl,--wrap,avcodec_receive_frame      \
6405                   -Wl,--wrap,swr_convert                \
6406                   -Wl,--wrap,avresample_convert         \
6407                   -Wl,--wrap,sws_scale ||
6408     disable xmm_clobber_test
6409
6410 check_ld "cc" <<EOF && enable proper_dce
6411 extern const int array[512];
6412 static inline int func(void) { return array[0]; }
6413 int main(void) { return 0; }
6414 EOF
6415
6416 if enabled proper_dce; then
6417     echo "X { local: *; };" > $TMPV
6418     if test_ldflags -Wl,${version_script},$TMPV; then
6419         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6420         check_cc <<EOF && enable symver_asm_label
6421 void ff_foo(void) __asm__ ("av_foo@VERSION");
6422 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6423 EOF
6424         check_cc <<EOF && enable symver_gnu_asm
6425 __asm__(".symver ff_foo,av_foo@VERSION");
6426 void ff_foo(void) {}
6427 EOF
6428     fi
6429 fi
6430
6431 if [ -z "$optflags" ]; then
6432     if enabled small; then
6433         optflags=$cflags_size
6434     elif enabled optimizations; then
6435         optflags=$cflags_speed
6436     else
6437         optflags=$cflags_noopt
6438     fi
6439 fi
6440
6441 if [ -z "$nvccflags" ]; then
6442     nvccflags=$nvccflags_default
6443 fi
6444
6445 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6446     nvccflags="$nvccflags -m64"
6447 else
6448     nvccflags="$nvccflags -m32"
6449 fi
6450
6451 check_optflags(){
6452     check_cflags "$@"
6453     enabled lto && check_ldflags "$@"
6454 }
6455
6456 check_optflags $optflags
6457 check_optflags -fno-math-errno
6458 check_optflags -fno-signed-zeros
6459
6460 if enabled lto; then
6461     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6462     check_cflags  -flto
6463     check_ldflags -flto $cpuflags
6464     disable inline_asm_direct_symbol_refs
6465 fi
6466
6467 enabled ftrapv && check_cflags -ftrapv
6468
6469 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6470 int x;
6471 EOF
6472
6473
6474 if enabled icc; then
6475     # Just warnings, no remarks
6476     check_cflags -w1
6477     # -wd: Disable following warnings
6478     # 144, 167, 556: -Wno-pointer-sign
6479     # 188: enumerated type mixed with another type
6480     # 1292: attribute "foo" ignored
6481     # 1419: external declaration in primary source file
6482     # 10006: ignoring unknown option -fno-signed-zeros
6483     # 10148: ignoring unknown option -Wno-parentheses
6484     # 10156: ignoring option '-W'; no argument required
6485     # 13200: No EMMS instruction before call to function
6486     # 13203: No EMMS instruction before return from function
6487     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6488     # 11030: Warning unknown option --as-needed
6489     # 10156: ignoring option '-export'; no argument required
6490     check_ldflags -wd10156,11030
6491     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6492     enable ebp_available
6493     # The test above does not test linking
6494     enabled lto && disable symver_asm_label
6495     if enabled x86_32; then
6496         icc_version=$($cc -dumpversion)
6497         test ${icc_version%%.*} -ge 11 &&
6498             check_cflags -falign-stack=maintain-16-byte ||
6499             disable aligned_stack
6500     fi
6501 elif enabled ccc; then
6502     # disable some annoying warnings
6503     add_cflags -msg_disable bitnotint
6504     add_cflags -msg_disable mixfuncvoid
6505     add_cflags -msg_disable nonstandcast
6506     add_cflags -msg_disable unsupieee
6507 elif enabled gcc; then
6508     check_optflags -fno-tree-vectorize
6509     check_cflags -Werror=format-security
6510     check_cflags -Werror=implicit-function-declaration
6511     check_cflags -Werror=missing-prototypes
6512     check_cflags -Werror=return-type
6513     check_cflags -Werror=vla
6514     check_cflags -Wformat
6515     check_cflags -fdiagnostics-color=auto
6516     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6517 elif enabled llvm_gcc; then
6518     check_cflags -mllvm -stack-alignment=16
6519 elif enabled clang; then
6520     check_cflags -mllvm -stack-alignment=16
6521     check_cflags -mstack-alignment=16
6522     check_cflags -Qunused-arguments
6523     check_cflags -Werror=implicit-function-declaration
6524     check_cflags -Werror=missing-prototypes
6525     check_cflags -Werror=return-type
6526 elif enabled cparser; then
6527     add_cflags -Wno-missing-variable-declarations
6528     add_cflags -Wno-empty-statement
6529 elif enabled armcc; then
6530     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6531     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6532     # 2523: use of inline assembly is deprecated
6533     add_cflags -W${armcc_opt},--diag_suppress=2523
6534     add_cflags -W${armcc_opt},--diag_suppress=1207
6535     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6536     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6537     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6538     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6539 elif enabled tms470; then
6540     add_cflags -pds=824 -pds=837
6541     disable inline_asm
6542 elif enabled pathscale; then
6543     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6544     disable inline_asm
6545 elif enabled_any msvc icl; then
6546     enabled x86_32 && disable aligned_stack
6547     enabled_all x86_32 debug && add_cflags -Oy-
6548     enabled debug && add_ldflags -debug
6549     enable pragma_deprecated
6550     if enabled icl; then
6551         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6552         # (correctly) on icl 13.x.
6553         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6554             add_cflags -Qansi-alias
6555         # Some inline asm is not compilable in debug
6556         if enabled debug; then
6557             disable ebp_available
6558             disable ebx_available
6559         fi
6560     fi
6561     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6562     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6563     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6564     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6565     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6566     # MSVC 2013 and newer can handle it fine.
6567     # If this declspec fails, force including stdlib.h before the restrict redefinition
6568     # happens in config.h.
6569     if [ $_restrict != restrict ]; then
6570         check_cc <<EOF || add_cflags -FIstdlib.h
6571 __declspec($_restrict) void* foo(int);
6572 EOF
6573     fi
6574     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6575     # Issue has been fixed in MSVC v19.00.24218.
6576     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6577         check_cflags -d2SSAOptimizer-
6578     # enable utf-8 source processing on VS2015 U2 and newer
6579     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6580         add_cflags -utf-8
6581 fi
6582
6583 for pfx in "" host_; do
6584     varname=${pfx%_}cc_type
6585     eval "type=\$$varname"
6586     if [ "$type" = "msvc" ]; then
6587         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6588 static inline int foo(int a) { return a; }
6589 EOF
6590     fi
6591 done
6592
6593 case $as_type in
6594     clang)
6595         add_asflags -Qunused-arguments
6596     ;;
6597 esac
6598
6599 case $ld_type in
6600     clang)
6601         check_ldflags -Qunused-arguments
6602     ;;
6603 esac
6604
6605 case $target_os in
6606     osf1)
6607         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6608     ;;
6609 esac
6610
6611 enable frame_thread_encoder
6612
6613 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6614
6615 check_deps $CONFIG_LIST       \
6616            $CONFIG_EXTRA      \
6617            $HAVE_LIST         \
6618            $ALL_COMPONENTS    \
6619
6620 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"
6621
6622
6623 if test $target_os = "haiku"; then
6624     disable memalign
6625     disable posix_memalign
6626 fi
6627
6628 flatten_extralibs(){
6629     unset nested_entries
6630     list_name=$1
6631     eval list=\$${1}
6632     for entry in $list; do
6633         entry_copy=$entry
6634         resolve entry_copy
6635         append nested_entries $(filter '*_extralibs' $entry_copy)
6636         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6637         eval $entry="\$flat_entries"
6638     done
6639     append $list_name "$nested_entries"
6640
6641     resolve nested_entries
6642     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6643         flatten_extralibs $list_name
6644     fi
6645 }
6646
6647 for linkunit in $LIBRARY_LIST; do
6648     unset current_extralibs
6649     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6650     for comp in ${components}; do
6651         enabled $comp || continue
6652         comp_extralibs="${comp}_extralibs"
6653         append current_extralibs $comp_extralibs
6654     done
6655     eval prepend ${linkunit}_extralibs $current_extralibs
6656 done
6657
6658 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6659     flatten_extralibs ${linkunit}_extralibs
6660     unique  ${linkunit}_extralibs
6661     resolve ${linkunit}_extralibs
6662     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
6663 done
6664
6665 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6666
6667 for thread in $THREADS_LIST; do
6668     if enabled $thread; then
6669         test -n "$thread_type" &&
6670             die "ERROR: Only one thread type must be selected." ||
6671             thread_type="$thread"
6672     fi
6673 done
6674
6675 if disabled stdatomic_h; then
6676     if enabled atomics_gcc; then
6677         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6678     elif enabled atomics_win32; then
6679         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6680     elif enabled atomics_suncc; then
6681         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6682     elif enabled pthreads; then
6683         add_compat atomics/pthread/stdatomic.o
6684         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6685     else
6686         enabled threads && die "Threading is enabled, but no atomics are available"
6687         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6688     fi
6689 fi
6690
6691 # Check if requested libraries were found.
6692 for lib in $AUTODETECT_LIBS; do
6693     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6694 done
6695
6696 enabled zlib && add_cppflags -DZLIB_CONST
6697
6698 # conditional library dependencies, in linking order
6699 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6700 enabled afir_filter         && prepend avfilter_deps "avcodec"
6701 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6702 enabled aresample_filter    && prepend avfilter_deps "swresample"
6703 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6704 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6705 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6706 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6707 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6708 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6709 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6710 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6711 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6712 enabled pan_filter          && prepend avfilter_deps "swresample"
6713 enabled pp_filter           && prepend avfilter_deps "postproc"
6714 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6715 enabled resample_filter && prepend avfilter_deps "avresample"
6716 enabled sab_filter          && prepend avfilter_deps "swscale"
6717 enabled scale_filter    && prepend avfilter_deps "swscale"
6718 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6719 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6720 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6721 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6722 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6723 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6724 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6725 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6726 enabled spp_filter          && prepend avfilter_deps "avcodec"
6727 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6728 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6729 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6730
6731 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6732
6733 #FIXME
6734 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6735
6736 enabled opus_decoder    && prepend avcodec_deps "swresample"
6737
6738 expand_deps(){
6739     lib_deps=${1}_deps
6740     eval "deps=\$$lib_deps"
6741     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6742     unique $lib_deps
6743 }
6744
6745 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6746 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6747
6748 map 'expand_deps $v' $LIBRARY_LIST
6749
6750 license="LGPL version 2.1 or later"
6751 if enabled nonfree; then
6752     license="nonfree and unredistributable"
6753 elif enabled gplv3; then
6754     license="GPL version 3 or later"
6755 elif enabled lgplv3; then
6756     license="LGPL version 3 or later"
6757 elif enabled gpl; then
6758     license="GPL version 2 or later"
6759 fi
6760
6761 if test "$quiet" != "yes"; then
6762
6763 echo "install prefix            $prefix"
6764 echo "source path               $source_path"
6765 echo "C compiler                $cc"
6766 echo "C library                 $libc_type"
6767 if test "$host_cc" != "$cc"; then
6768     echo "host C compiler           $host_cc"
6769     echo "host C library            $host_libc_type"
6770 fi
6771 echo "ARCH                      $arch ($cpu)"
6772 if test "$build_suffix" != ""; then
6773     echo "build suffix              $build_suffix"
6774 fi
6775 if test "$progs_suffix" != ""; then
6776     echo "progs suffix              $progs_suffix"
6777 fi
6778 if test "$extra_version" != ""; then
6779     echo "version string suffix     $extra_version"
6780 fi
6781 echo "big-endian                ${bigendian-no}"
6782 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6783 if enabled x86; then
6784     echo "standalone assembly       ${x86asm-no}"
6785     echo "x86 assembler             ${x86asmexe}"
6786     echo "MMX enabled               ${mmx-no}"
6787     echo "MMXEXT enabled            ${mmxext-no}"
6788     echo "3DNow! enabled            ${amd3dnow-no}"
6789     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6790     echo "SSE enabled               ${sse-no}"
6791     echo "SSSE3 enabled             ${ssse3-no}"
6792     echo "AESNI enabled             ${aesni-no}"
6793     echo "AVX enabled               ${avx-no}"
6794     echo "AVX2 enabled              ${avx2-no}"
6795     echo "XOP enabled               ${xop-no}"
6796     echo "FMA3 enabled              ${fma3-no}"
6797     echo "FMA4 enabled              ${fma4-no}"
6798     echo "i686 features enabled     ${i686-no}"
6799     echo "CMOV is fast              ${fast_cmov-no}"
6800     echo "EBX available             ${ebx_available-no}"
6801     echo "EBP available             ${ebp_available-no}"
6802 fi
6803 if enabled aarch64; then
6804     echo "NEON enabled              ${neon-no}"
6805     echo "VFP enabled               ${vfp-no}"
6806 fi
6807 if enabled arm; then
6808     echo "ARMv5TE enabled           ${armv5te-no}"
6809     echo "ARMv6 enabled             ${armv6-no}"
6810     echo "ARMv6T2 enabled           ${armv6t2-no}"
6811     echo "VFP enabled               ${vfp-no}"
6812     echo "NEON enabled              ${neon-no}"
6813     echo "THUMB enabled             ${thumb-no}"
6814 fi
6815 if enabled mips; then
6816     echo "MIPS FPU enabled          ${mipsfpu-no}"
6817     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6818     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6819     echo "MIPS MSA enabled          ${msa-no}"
6820     echo "LOONGSON MMI enabled      ${mmi-no}"
6821 fi
6822 if enabled ppc; then
6823     echo "AltiVec enabled           ${altivec-no}"
6824     echo "VSX enabled               ${vsx-no}"
6825     echo "POWER8 enabled            ${power8-no}"
6826     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6827     echo "dcbzl available           ${dcbzl-no}"
6828 fi
6829 echo "debug symbols             ${debug-no}"
6830 echo "strip symbols             ${stripping-no}"
6831 echo "optimize for size         ${small-no}"
6832 echo "optimizations             ${optimizations-no}"
6833 echo "static                    ${static-no}"
6834 echo "shared                    ${shared-no}"
6835 echo "postprocessing support    ${postproc-no}"
6836 echo "network support           ${network-no}"
6837 echo "threading support         ${thread_type-no}"
6838 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6839 echo "texi2html enabled         ${texi2html-no}"
6840 echo "perl enabled              ${perl-no}"
6841 echo "pod2man enabled           ${pod2man-no}"
6842 echo "makeinfo enabled          ${makeinfo-no}"
6843 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6844 test -n "$random_seed" &&
6845     echo "random seed               ${random_seed}"
6846 echo
6847
6848 echo "External libraries:"
6849 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6850 echo
6851
6852 echo "External libraries providing hardware acceleration:"
6853 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6854 echo
6855
6856 echo "Libraries:"
6857 print_enabled '' $LIBRARY_LIST | print_in_columns
6858 echo
6859
6860 echo "Programs:"
6861 print_enabled '' $PROGRAM_LIST | print_in_columns
6862 echo
6863
6864 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6865     echo "Enabled ${type}s:"
6866     eval list=\$$(toupper $type)_LIST
6867     print_enabled '_*' $list | print_in_columns
6868     echo
6869 done
6870
6871 if test -n "$ignore_tests"; then
6872     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6873     echo "Ignored FATE tests:"
6874     echo $ignore_tests | print_in_columns
6875     echo
6876 fi
6877
6878 echo "License: $license"
6879
6880 echo "Creating configuration files ..."
6881
6882 fi # test "$quiet" != "yes"
6883
6884 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6885
6886 enabled stripping || strip="echo skipping strip"
6887 enabled stripping || striptype=""
6888
6889 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6890
6891 cat > ffbuild/config.mak <<EOF
6892 # Automatically generated by configure - do not modify!
6893 ifndef FFMPEG_CONFIG_MAK
6894 FFMPEG_CONFIG_MAK=1
6895 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6896 prefix=$prefix
6897 LIBDIR=\$(DESTDIR)$libdir
6898 SHLIBDIR=\$(DESTDIR)$shlibdir
6899 INCDIR=\$(DESTDIR)$incdir
6900 BINDIR=\$(DESTDIR)$bindir
6901 DATADIR=\$(DESTDIR)$datadir
6902 DOCDIR=\$(DESTDIR)$docdir
6903 MANDIR=\$(DESTDIR)$mandir
6904 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6905 INSTALL_NAME_DIR=$install_name_dir
6906 SRC_PATH=$source_path
6907 SRC_LINK=$source_link
6908 ifndef MAIN_MAKEFILE
6909 SRC_PATH:=\$(SRC_PATH:.%=..%)
6910 endif
6911 CC_IDENT=$cc_ident
6912 ARCH=$arch
6913 INTRINSICS=$intrinsics
6914 CC=$cc
6915 CXX=$cxx
6916 AS=$as
6917 OBJCC=$objcc
6918 LD=$ld
6919 DEPCC=$dep_cc
6920 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6921 DEPAS=$as
6922 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6923 X86ASM=$x86asmexe
6924 DEPX86ASM=$x86asmexe
6925 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6926 AR=$ar
6927 ARFLAGS=$arflags
6928 AR_O=$ar_o
6929 RANLIB=$ranlib
6930 STRIP=$strip
6931 STRIPTYPE=$striptype
6932 NVCC=$nvcc
6933 CP=cp -p
6934 LN_S=$ln_s
6935 CPPFLAGS=$CPPFLAGS
6936 CFLAGS=$CFLAGS
6937 CXXFLAGS=$CXXFLAGS
6938 OBJCFLAGS=$OBJCFLAGS
6939 ASFLAGS=$ASFLAGS
6940 NVCCFLAGS=$nvccflags
6941 AS_C=$AS_C
6942 AS_O=$AS_O
6943 OBJCC_C=$OBJCC_C
6944 OBJCC_E=$OBJCC_E
6945 OBJCC_O=$OBJCC_O
6946 CC_C=$CC_C
6947 CC_E=$CC_E
6948 CC_O=$CC_O
6949 CXX_C=$CXX_C
6950 CXX_O=$CXX_O
6951 NVCC_C=$NVCC_C
6952 NVCC_O=$NVCC_O
6953 LD_O=$LD_O
6954 X86ASM_O=$X86ASM_O
6955 LD_LIB=$LD_LIB
6956 LD_PATH=$LD_PATH
6957 DLLTOOL=$dlltool
6958 WINDRES=$windres
6959 DEPWINDRES=$dep_cc
6960 DOXYGEN=$doxygen
6961 LDFLAGS=$LDFLAGS
6962 LDEXEFLAGS=$LDEXEFLAGS
6963 LDSOFLAGS=$LDSOFLAGS
6964 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6965 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6966 X86ASMFLAGS=$X86ASMFLAGS
6967 BUILDSUF=$build_suffix
6968 PROGSSUF=$progs_suffix
6969 FULLNAME=$FULLNAME
6970 LIBPREF=$LIBPREF
6971 LIBSUF=$LIBSUF
6972 LIBNAME=$LIBNAME
6973 SLIBPREF=$SLIBPREF
6974 SLIBSUF=$SLIBSUF
6975 EXESUF=$EXESUF
6976 EXTRA_VERSION=$extra_version
6977 CCDEP=$CCDEP
6978 CXXDEP=$CXXDEP
6979 CCDEP_FLAGS=$CCDEP_FLAGS
6980 ASDEP=$ASDEP
6981 ASDEP_FLAGS=$ASDEP_FLAGS
6982 X86ASMDEP=$X86ASMDEP
6983 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6984 CC_DEPFLAGS=$CC_DEPFLAGS
6985 AS_DEPFLAGS=$AS_DEPFLAGS
6986 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6987 HOSTCC=$host_cc
6988 HOSTLD=$host_ld
6989 HOSTCFLAGS=$host_cflags
6990 HOSTCPPFLAGS=$host_cppflags
6991 HOSTEXESUF=$HOSTEXESUF
6992 HOSTLDFLAGS=$host_ldflags
6993 HOSTEXTRALIBS=$host_extralibs
6994 DEPHOSTCC=$host_cc
6995 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6996 HOSTCCDEP=$HOSTCCDEP
6997 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6998 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6999 HOSTCC_C=$HOSTCC_C
7000 HOSTCC_O=$HOSTCC_O
7001 HOSTLD_O=$HOSTLD_O
7002 TARGET_EXEC=$target_exec $target_exec_args
7003 TARGET_PATH=$target_path
7004 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7005 CFLAGS-ffplay=${sdl2_cflags}
7006 CFLAGS_HEADERS=$CFLAGS_HEADERS
7007 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7008 EXTRALIBS=$extralibs
7009 COMPAT_OBJS=$compat_objs
7010 INSTALL=$install
7011 LIBTARGET=${LIBTARGET}
7012 SLIBNAME=${SLIBNAME}
7013 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7014 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7015 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7016 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7017 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7018 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7019 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7020 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7021 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7022 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7023 NOREDZONE_FLAGS=$noredzone_flags
7024 LIBFUZZER_PATH=$libfuzzer_path
7025 IGNORE_TESTS=$ignore_tests
7026 EOF
7027
7028 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7029
7030 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7031     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7032 done
7033
7034 cat > $TMPH <<EOF
7035 /* Automatically generated by configure - do not modify! */
7036 #ifndef FFMPEG_CONFIG_H
7037 #define FFMPEG_CONFIG_H
7038 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7039 #define FFMPEG_LICENSE "$(c_escape $license)"
7040 #define CONFIG_THIS_YEAR 2017
7041 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7042 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7043 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7044 #define av_restrict $_restrict
7045 #define EXTERN_PREFIX "${extern_prefix}"
7046 #define EXTERN_ASM ${extern_prefix}
7047 #define BUILDSUF "$build_suffix"
7048 #define SLIBSUF "$SLIBSUF"
7049 #define HAVE_MMX2 HAVE_MMXEXT
7050 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7051 EOF
7052
7053 test -n "$assert_level" &&
7054     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7055
7056 test -n "$malloc_prefix" &&
7057     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7058
7059 if enabled x86asm; then
7060     append config_files $TMPASM
7061     printf '' >$TMPASM
7062 fi
7063
7064 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7065
7066
7067 mkdir -p doc
7068 mkdir -p tests
7069 mkdir -p tests/api
7070 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7071
7072 print_config ARCH_   "$config_files" $ARCH_LIST
7073 print_config HAVE_   "$config_files" $HAVE_LIST
7074 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7075                                      $CONFIG_EXTRA      \
7076                                      $ALL_COMPONENTS    \
7077
7078 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7079 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7080
7081 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7082 cp_if_changed $TMPH config.h
7083 touch ffbuild/.config
7084
7085 enabled x86asm && cp_if_changed $TMPASM config.asm
7086
7087 cat > $TMPH <<EOF
7088 /* Generated by ffconf */
7089 #ifndef AVUTIL_AVCONFIG_H
7090 #define AVUTIL_AVCONFIG_H
7091 EOF
7092
7093 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7094
7095 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7096
7097 cp_if_changed $TMPH libavutil/avconfig.h
7098
7099 # generate the lists of enabled components
7100 print_enabled_components(){
7101     file=$1
7102     struct_name=$2
7103     name=$3
7104     shift 3
7105     echo "static const $struct_name * const $name[] = {" > $TMPH
7106     for c in $*; do
7107         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7108     done
7109     echo "    NULL };" >> $TMPH
7110     cp_if_changed $TMPH $file
7111 }
7112
7113 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7114 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7115
7116 if test -n "$WARNINGS"; then
7117     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7118     enabled fatal_warnings && exit 1
7119 fi
7120
7121 # Settings for pkg-config files
7122
7123 cat > ffbuild/config.sh <<EOF
7124 # Automatically generated by configure - do not modify!
7125 shared=$shared
7126 build_suffix=$build_suffix
7127 prefix=$prefix
7128 libdir=$libdir
7129 incdir=$incdir
7130 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7131 source_path=${source_path}
7132 LIBPREF=${LIBPREF}
7133 LIBSUF=${LIBSUF}
7134 extralibs_avutil="$avutil_extralibs"
7135 extralibs_avcodec="$avcodec_extralibs"
7136 extralibs_avformat="$avformat_extralibs"
7137 extralibs_avdevice="$avdevice_extralibs"
7138 extralibs_avfilter="$avfilter_extralibs"
7139 extralibs_avresample="$avresample_extralibs"
7140 extralibs_postproc="$postproc_extralibs"
7141 extralibs_swscale="$swscale_extralibs"
7142 extralibs_swresample="$swresample_extralibs"
7143 EOF
7144
7145 for lib in $LIBRARY_LIST; do
7146     lib_deps="$(eval echo \$${lib}_deps)"
7147     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7148 done