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 [$LDEXEFLAGS]
 368   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 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_safe(){
 588     var=$1
 589     shift
 590     eval $(sanitize_var_name "$var")='$*'
 591 }
 592
 593 get_safe(){
 594     eval echo \$$(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_safe(){
 640     for var; do
 641         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 642     done
 643 }
 644
 645 disable_safe(){
 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_ldlibflags(){
 873     append LDLIBFLAGS $($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_safe $header
1112     check_cpp "$@" <<EOF && enable_safe $header
1113 #include <$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_safe $header
1124     {
1125        echo "#include <$header>"
1126        echo "int main(void) { return 0; }"
1127     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1128 }
1129
1130 check_apple_framework(){
1131     log check_apple_framework "$@"
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_safe $headers
1200 }
1201
1202 check_class_headers_cpp(){
1203     log check_class_headers_cpp "$@"
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_safe $headers
1219 }
1220
1221 check_cpp_condition(){
1222     log check_cpp_condition "$@"
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 $name &&
1285         set_safe "${name}_cflags"    $pkg_cflags &&
1286         set_safe "${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=$2
1328     shift 2
1329     disable_safe "$type"
1330     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1331 }
1332
1333 check_struct(){
1334     log check_struct "$@"
1335     headers=$1
1336     struct=$2
1337     member=$3
1338     shift 3
1339     disable_safe "${struct}_${member}"
1340     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1341         enable_safe "${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    $(get_safe "${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     libvo_amrwbenc
1573     rkmpp
1574 "
1575
1576 EXTERNAL_LIBRARY_GPLV3_LIST="
1577     libsmbclient
1578 "
1579
1580 EXTERNAL_LIBRARY_LIST="
1581     $EXTERNAL_LIBRARY_GPL_LIST
1582     $EXTERNAL_LIBRARY_NONFREE_LIST
1583     $EXTERNAL_LIBRARY_VERSION3_LIST
1584     $EXTERNAL_LIBRARY_GPLV3_LIST
1585     chromaprint
1586     gcrypt
1587     gnutls
1588     jni
1589     ladspa
1590     libass
1591     libbluray
1592     libbs2b
1593     libcaca
1594     libcelt
1595     libdc1394
1596     libdrm
1597     libflite
1598     libfontconfig
1599     libfreetype
1600     libfribidi
1601     libgme
1602     libgsm
1603     libiec61883
1604     libilbc
1605     libjack
1606     libkvazaar
1607     libmodplug
1608     libmp3lame
1609     libmysofa
1610     libopencv
1611     libopenh264
1612     libopenjpeg
1613     libopenmpt
1614     libopus
1615     libpulse
1616     librsvg
1617     librtmp
1618     libshine
1619     libsmbclient
1620     libsnappy
1621     libsoxr
1622     libspeex
1623     libssh
1624     libtesseract
1625     libtheora
1626     libtwolame
1627     libv4l2
1628     libvmaf
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_8
1885     local_aligned_16
1886     local_aligned_32
1887     simd_align_16
1888     simd_align_32
1889 "
1890
1891 BUILTIN_LIST="
1892     atomic_cas_ptr
1893     machine_rw_barrier
1894     MemoryBarrier
1895     mm_empty
1896     rdtsc
1897     sarestart
1898     sem_timedwait
1899     sync_val_compare_and_swap
1900 "
1901 HAVE_LIST_CMDLINE="
1902     inline_asm
1903     symver
1904     x86asm
1905 "
1906
1907 HAVE_LIST_PUB="
1908     bigendian
1909     fast_unaligned
1910 "
1911
1912 HEADERS_LIST="
1913     altivec_h
1914     arpa_inet_h
1915     asm_types_h
1916     cdio_paranoia_h
1917     cdio_paranoia_paranoia_h
1918     cuda_h
1919     d3d11_h
1920     dispatch_dispatch_h
1921     dev_bktr_ioctl_bt848_h
1922     dev_bktr_ioctl_meteor_h
1923     dev_ic_bt8xx_h
1924     dev_video_bktr_ioctl_bt848_h
1925     dev_video_meteor_ioctl_meteor_h
1926     direct_h
1927     dirent_h
1928     dlfcn_h
1929     dxgidebug_h
1930     dxva_h
1931     ES2_gl_h
1932     gsm_h
1933     io_h
1934     mach_mach_time_h
1935     machine_ioctl_bt848_h
1936     machine_ioctl_meteor_h
1937     malloc_h
1938     opencv2_core_core_c_h
1939     OpenGL_gl3_h
1940     poll_h
1941     soundcard_h
1942     stdatomic_h
1943     sys_mman_h
1944     sys_param_h
1945     sys_resource_h
1946     sys_select_h
1947     sys_soundcard_h
1948     sys_time_h
1949     sys_un_h
1950     sys_videoio_h
1951     termios_h
1952     udplite_h
1953     unistd_h
1954     valgrind_valgrind_h
1955     windows_h
1956     winsock2_h
1957 "
1958
1959 INTRINSICS_LIST="
1960     intrinsics_neon
1961 "
1962
1963 COMPLEX_FUNCS="
1964     cabs
1965     cexp
1966 "
1967
1968 MATH_FUNCS="
1969     atanf
1970     atan2f
1971     cbrt
1972     cbrtf
1973     copysign
1974     cosf
1975     erf
1976     exp2
1977     exp2f
1978     expf
1979     hypot
1980     isfinite
1981     isinf
1982     isnan
1983     ldexpf
1984     llrint
1985     llrintf
1986     log2
1987     log2f
1988     log10f
1989     lrint
1990     lrintf
1991     powf
1992     rint
1993     round
1994     roundf
1995     sinf
1996     trunc
1997     truncf
1998 "
1999
2000 SYSTEM_FUNCS="
2001     access
2002     aligned_malloc
2003     arc4random
2004     clock_gettime
2005     closesocket
2006     CommandLineToArgvW
2007     CoTaskMemFree
2008     CryptGenRandom
2009     fcntl
2010     flt_lim
2011     fork
2012     getaddrinfo
2013     gethrtime
2014     getopt
2015     GetProcessAffinityMask
2016     GetProcessMemoryInfo
2017     GetProcessTimes
2018     getrusage
2019     GetSystemTimeAsFileTime
2020     gettimeofday
2021     glob
2022     glXGetProcAddress
2023     gmtime_r
2024     inet_aton
2025     isatty
2026     kbhit
2027     LoadLibrary
2028     localtime_r
2029     lstat
2030     lzo1x_999_compress
2031     mach_absolute_time
2032     MapViewOfFile
2033     memalign
2034     mkstemp
2035     mmap
2036     mprotect
2037     nanosleep
2038     PeekNamedPipe
2039     posix_memalign
2040     pthread_cancel
2041     sched_getaffinity
2042     SetConsoleTextAttribute
2043     SetConsoleCtrlHandler
2044     setmode
2045     setrlimit
2046     Sleep
2047     strerror_r
2048     sysconf
2049     sysctl
2050     usleep
2051     UTGetOSTypeFromString
2052     VirtualAlloc
2053     wglGetProcAddress
2054 "
2055
2056 TOOLCHAIN_FEATURES="
2057     as_dn_directive
2058     as_fpu_directive
2059     as_func
2060     as_object_arch
2061     asm_mod_q
2062     attribute_may_alias
2063     attribute_packed
2064     blocks_extension
2065     ebp_available
2066     ebx_available
2067     gnu_as
2068     gnu_windres
2069     ibm_asm
2070     inline_asm_direct_symbol_refs
2071     inline_asm_labels
2072     inline_asm_nonlocal_labels
2073     pragma_deprecated
2074     rsync_contimeout
2075     symver_asm_label
2076     symver_gnu_asm
2077     vfp_args
2078     xform_asm
2079     xmm_clobbers
2080 "
2081
2082 TYPES_LIST="
2083     CONDITION_VARIABLE_Ptr
2084     kCMVideoCodecType_HEVC
2085     socklen_t
2086     struct_addrinfo
2087     struct_group_source_req
2088     struct_ip_mreq_source
2089     struct_ipv6_mreq
2090     struct_msghdr_msg_flags
2091     struct_pollfd
2092     struct_rusage_ru_maxrss
2093     struct_sctp_event_subscribe
2094     struct_sockaddr_in6
2095     struct_sockaddr_sa_len
2096     struct_sockaddr_storage
2097     struct_stat_st_mtim_tv_nsec
2098     struct_v4l2_frmivalenum_discrete
2099 "
2100
2101 HAVE_LIST="
2102     $ARCH_EXT_LIST
2103     $(add_suffix _external $ARCH_EXT_LIST)
2104     $(add_suffix _inline   $ARCH_EXT_LIST)
2105     $ARCH_FEATURES
2106     $ATOMICS_LIST
2107     $BUILTIN_LIST
2108     $COMPLEX_FUNCS
2109     $HAVE_LIST_CMDLINE
2110     $HAVE_LIST_PUB
2111     $HEADERS_LIST
2112     $INTRINSICS_LIST
2113     $MATH_FUNCS
2114     $SYSTEM_FUNCS
2115     $THREADS_LIST
2116     $TOOLCHAIN_FEATURES
2117     $TYPES_LIST
2118     atomics_native
2119     dos_paths
2120     libc_msvcrt
2121     makeinfo
2122     makeinfo_html
2123     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2124     perl
2125     pod2man
2126     section_data_rel_ro
2127     texi2html
2128     threads
2129     uwp
2130     vaapi_drm
2131     vaapi_x11
2132     vdpau_x11
2133     winrt
2134 "
2135
2136 # options emitted with CONFIG_ prefix but not available on the command line
2137 CONFIG_EXTRA="
2138     aandcttables
2139     ac3dsp
2140     audio_frame_queue
2141     audiodsp
2142     blockdsp
2143     bswapdsp
2144     cabac
2145     cbs
2146     cbs_h264
2147     cbs_h265
2148     cbs_mpeg2
2149     dirac_parse
2150     dvprofile
2151     exif
2152     faandct
2153     faanidct
2154     fdctdsp
2155     flacdsp
2156     fmtconvert
2157     frame_thread_encoder
2158     g722dsp
2159     golomb
2160     gplv3
2161     h263dsp
2162     h264chroma
2163     h264dsp
2164     h264parse
2165     h264pred
2166     h264qpel
2167     hevcparse
2168     hpeldsp
2169     huffman
2170     huffyuvdsp
2171     huffyuvencdsp
2172     idctdsp
2173     iirfilter
2174     mdct15
2175     intrax8
2176     iso_media
2177     ividsp
2178     jpegtables
2179     lgplv3
2180     libx262
2181     llauddsp
2182     llviddsp
2183     llvidencdsp
2184     lpc
2185     lzf
2186     me_cmp
2187     mpeg_er
2188     mpegaudio
2189     mpegaudiodsp
2190     mpegaudioheader
2191     mpegvideo
2192     mpegvideoenc
2193     mss34dsp
2194     pixblockdsp
2195     qpeldsp
2196     qsv
2197     qsvdec
2198     qsvenc
2199     rangecoder
2200     riffdec
2201     riffenc
2202     rtpdec
2203     rtpenc_chain
2204     rv34dsp
2205     sinewin
2206     snappy
2207     srtp
2208     startcode
2209     texturedsp
2210     texturedspenc
2211     tpeldsp
2212     vaapi_1
2213     vaapi_encode
2214     vc1dsp
2215     videodsp
2216     vp3dsp
2217     vp56dsp
2218     vp8dsp
2219     wma_freqs
2220     wmv2dsp
2221 "
2222
2223 CMDLINE_SELECT="
2224     $ARCH_EXT_LIST
2225     $CONFIG_LIST
2226     $HAVE_LIST_CMDLINE
2227     $THREADS_LIST
2228     asm
2229     cross_compile
2230     debug
2231     extra_warnings
2232     logging
2233     lto
2234     optimizations
2235     rpath
2236     stripping
2237 "
2238
2239 PATHS_LIST="
2240     bindir
2241     datadir
2242     docdir
2243     incdir
2244     libdir
2245     mandir
2246     pkgconfigdir
2247     prefix
2248     shlibdir
2249     install_name_dir
2250 "
2251
2252 CMDLINE_SET="
2253     $PATHS_LIST
2254     ar
2255     arch
2256     as
2257     assert_level
2258     build_suffix
2259     cc
2260     objcc
2261     cpu
2262     cross_prefix
2263     custom_allocator
2264     cxx
2265     dep_cc
2266     doxygen
2267     env
2268     extra_version
2269     gas
2270     host_cc
2271     host_cflags
2272     host_extralibs
2273     host_ld
2274     host_ldflags
2275     host_os
2276     ignore_tests
2277     install
2278     ld
2279     ln_s
2280     logfile
2281     malloc_prefix
2282     nm
2283     optflags
2284     nvccflags
2285     pkg_config
2286     pkg_config_flags
2287     progs_suffix
2288     random_seed
2289     ranlib
2290     samples
2291     strip
2292     sws_max_filter_size
2293     sysinclude
2294     sysroot
2295     target_exec
2296     target_os
2297     target_path
2298     target_samples
2299     tempprefix
2300     toolchain
2301     valgrind
2302     x86asmexe
2303 "
2304
2305 CMDLINE_APPEND="
2306     extra_cflags
2307     extra_cxxflags
2308     extra_objcflags
2309     host_cppflags
2310 "
2311
2312 # code dependency declarations
2313
2314 # architecture extensions
2315
2316 armv5te_deps="arm"
2317 armv6_deps="arm"
2318 armv6t2_deps="arm"
2319 armv8_deps="aarch64"
2320 neon_deps_any="aarch64 arm"
2321 intrinsics_neon_deps="neon"
2322 vfp_deps_any="aarch64 arm"
2323 vfpv3_deps="vfp"
2324 setend_deps="arm"
2325
2326 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2327
2328 loongson2_deps="mips"
2329 loongson3_deps="mips"
2330 mipsfpu_deps="mips"
2331 mipsdsp_deps="mips"
2332 mipsdspr2_deps="mips"
2333 mips32r2_deps="mips"
2334 mips32r5_deps="mips"
2335 mips32r6_deps="mips"
2336 mips64r2_deps="mips"
2337 mips64r6_deps="mips"
2338 msa_deps="mipsfpu"
2339 mmi_deps="mips"
2340
2341 altivec_deps="ppc"
2342 dcbzl_deps="ppc"
2343 ldbrx_deps="ppc"
2344 ppc4xx_deps="ppc"
2345 vsx_deps="altivec"
2346 power8_deps="vsx"
2347
2348 cpunop_deps="i686"
2349 x86_64_select="i686"
2350 x86_64_suggest="fast_cmov"
2351
2352 amd3dnow_deps="mmx"
2353 amd3dnowext_deps="amd3dnow"
2354 i686_deps="x86"
2355 mmx_deps="x86"
2356 mmxext_deps="mmx"
2357 sse_deps="mmxext"
2358 sse2_deps="sse"
2359 sse3_deps="sse2"
2360 ssse3_deps="sse3"
2361 sse4_deps="ssse3"
2362 sse42_deps="sse4"
2363 aesni_deps="sse42"
2364 avx_deps="sse42"
2365 xop_deps="avx"
2366 fma3_deps="avx"
2367 fma4_deps="avx"
2368 avx2_deps="avx"
2369
2370 mmx_external_deps="x86asm"
2371 mmx_inline_deps="inline_asm"
2372 mmx_suggest="mmx_external mmx_inline"
2373
2374 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2375     eval dep=\$${ext}_deps
2376     eval ${ext}_external_deps='"${dep}_external"'
2377     eval ${ext}_inline_deps='"${dep}_inline"'
2378     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2379 done
2380
2381 aligned_stack_if_any="aarch64 ppc x86"
2382 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2383 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2384 fast_unaligned_if_any="aarch64 ppc x86"
2385 simd_align_16_if_any="altivec neon sse"
2386 simd_align_32_if_any="avx"
2387
2388 # system capabilities
2389 symver_if_any="symver_asm_label symver_gnu_asm"
2390 valgrind_backtrace_conflict="optimizations"
2391 valgrind_backtrace_deps="valgrind_valgrind_h"
2392
2393 # threading support
2394 atomics_gcc_if="sync_val_compare_and_swap"
2395 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2396 atomics_win32_if="MemoryBarrier"
2397 atomics_native_if_any="$ATOMICS_LIST"
2398 w32threads_deps="atomics_native"
2399 threads_if_any="$THREADS_LIST"
2400
2401 # subsystems
2402 cbs_h264_select="cbs golomb"
2403 cbs_h265_select="cbs golomb"
2404 cbs_mpeg2_select="cbs"
2405 dct_select="rdft"
2406 dirac_parse_select="golomb"
2407 error_resilience_select="me_cmp"
2408 faandct_deps="faan fdctdsp"
2409 faanidct_deps="faan 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="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 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2524 metasound_decoder_select="lsp mdct sinewin"
2525 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2526 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2527 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2528 mjpegb_decoder_select="mjpeg_decoder"
2529 mlp_decoder_select="mlp_parser"
2530 mlp_encoder_select="lpc"
2531 motionpixels_decoder_select="bswapdsp"
2532 mp1_decoder_select="mpegaudio"
2533 mp1float_decoder_select="mpegaudio"
2534 mp2_decoder_select="mpegaudio"
2535 mp2float_decoder_select="mpegaudio"
2536 mp3_decoder_select="mpegaudio"
2537 mp3adu_decoder_select="mpegaudio"
2538 mp3adufloat_decoder_select="mpegaudio"
2539 mp3float_decoder_select="mpegaudio"
2540 mp3on4_decoder_select="mpegaudio"
2541 mp3on4float_decoder_select="mpegaudio"
2542 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2543 mpc8_decoder_select="mpegaudiodsp"
2544 mpegvideo_decoder_select="mpegvideo"
2545 mpeg1video_decoder_select="mpegvideo"
2546 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2547 mpeg2video_decoder_select="mpegvideo"
2548 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2549 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2550 mpeg4_encoder_select="h263_encoder"
2551 msa1_decoder_select="mss34dsp"
2552 mscc_decoder_select="zlib"
2553 msmpeg4v1_decoder_select="h263_decoder"
2554 msmpeg4v2_decoder_select="h263_decoder"
2555 msmpeg4v2_encoder_select="h263_encoder"
2556 msmpeg4v3_decoder_select="h263_decoder"
2557 msmpeg4v3_encoder_select="h263_encoder"
2558 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2559 mts2_decoder_select="mss34dsp"
2560 mxpeg_decoder_select="mjpeg_decoder"
2561 nellymoser_decoder_select="mdct sinewin"
2562 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2563 nuv_decoder_select="idctdsp lzo"
2564 on2avc_decoder_select="mdct"
2565 opus_decoder_deps="swresample"
2566 opus_decoder_select="mdct15"
2567 opus_encoder_select="audio_frame_queue mdct15"
2568 png_decoder_select="zlib"
2569 png_encoder_select="llvidencdsp zlib"
2570 prores_decoder_select="blockdsp idctdsp"
2571 prores_encoder_select="fdctdsp"
2572 qcelp_decoder_select="lsp"
2573 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2574 ra_144_decoder_select="audiodsp"
2575 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2576 ralf_decoder_select="golomb"
2577 rawvideo_decoder_select="bswapdsp"
2578 rscc_decoder_select="zlib"
2579 rtjpeg_decoder_select="me_cmp"
2580 rv10_decoder_select="h263_decoder"
2581 rv10_encoder_select="h263_encoder"
2582 rv20_decoder_select="h263_decoder"
2583 rv20_encoder_select="h263_encoder"
2584 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2585 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2586 screenpresso_decoder_select="zlib"
2587 shorten_decoder_select="bswapdsp"
2588 sipr_decoder_select="lsp"
2589 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2590 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2591 sonic_decoder_select="golomb rangecoder"
2592 sonic_encoder_select="golomb rangecoder"
2593 sonic_ls_encoder_select="golomb rangecoder"
2594 sp5x_decoder_select="mjpeg_decoder"
2595 srgc_decoder_select="zlib"
2596 svq1_decoder_select="hpeldsp"
2597 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2598 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2599 svq3_decoder_suggest="zlib"
2600 tak_decoder_select="audiodsp"
2601 tdsc_decoder_select="zlib mjpeg_decoder"
2602 theora_decoder_select="vp3_decoder"
2603 thp_decoder_select="mjpeg_decoder"
2604 tiff_decoder_suggest="zlib lzma"
2605 tiff_encoder_suggest="zlib"
2606 truehd_decoder_select="mlp_parser"
2607 truehd_encoder_select="lpc"
2608 truemotion2_decoder_select="bswapdsp"
2609 truespeech_decoder_select="bswapdsp"
2610 tscc_decoder_select="zlib"
2611 twinvq_decoder_select="mdct lsp sinewin"
2612 txd_decoder_select="texturedsp"
2613 utvideo_decoder_select="bswapdsp llviddsp"
2614 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2615 vble_decoder_select="llviddsp"
2616 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2617 vc1_qsv_decoder_deps="libmfx"
2618 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2619 vc1image_decoder_select="vc1_decoder"
2620 vorbis_decoder_select="mdct"
2621 vorbis_encoder_select="mdct"
2622 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2623 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2624 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2625 vp6a_decoder_select="vp6_decoder"
2626 vp6f_decoder_select="vp6_decoder"
2627 vp7_decoder_select="h264pred videodsp vp8dsp"
2628 vp8_decoder_select="h264pred videodsp vp8dsp"
2629 vp9_decoder_select="videodsp vp9_parser"
2630 webp_decoder_select="vp8_decoder exif"
2631 wmalossless_decoder_select="llauddsp"
2632 wmapro_decoder_select="mdct sinewin wma_freqs"
2633 wmav1_decoder_select="mdct sinewin wma_freqs"
2634 wmav1_encoder_select="mdct sinewin wma_freqs"
2635 wmav2_decoder_select="mdct sinewin wma_freqs"
2636 wmav2_encoder_select="mdct sinewin wma_freqs"
2637 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2638 wmv1_decoder_select="h263_decoder"
2639 wmv1_encoder_select="h263_encoder"
2640 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2641 wmv2_encoder_select="h263_encoder wmv2dsp"
2642 wmv3_decoder_select="vc1_decoder"
2643 wmv3image_decoder_select="wmv3_decoder"
2644 xma1_decoder_select="wmapro_decoder"
2645 xma2_decoder_select="wmapro_decoder"
2646 zerocodec_decoder_select="zlib"
2647 zlib_decoder_select="zlib"
2648 zlib_encoder_select="zlib"
2649 zmbv_decoder_select="zlib"
2650 zmbv_encoder_select="zlib"
2651
2652 # hardware accelerators
2653 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2654 cuda_deps_any="libdl LoadLibrary"
2655 cuvid_deps="cuda"
2656 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2657 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2658 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2659 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2660 xvmc_deps="X11_extensions_XvMClib_h"
2661
2662 h263_vaapi_hwaccel_deps="vaapi"
2663 h263_vaapi_hwaccel_select="h263_decoder"
2664 h263_videotoolbox_hwaccel_deps="videotoolbox"
2665 h263_videotoolbox_hwaccel_select="h263_decoder"
2666 h264_cuvid_hwaccel_deps="cuda cuvid"
2667 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2668 h264_d3d11va_hwaccel_deps="d3d11va"
2669 h264_d3d11va_hwaccel_select="h264_decoder"
2670 h264_d3d11va2_hwaccel_deps="d3d11va"
2671 h264_d3d11va2_hwaccel_select="h264_decoder"
2672 h264_dxva2_hwaccel_deps="dxva2"
2673 h264_dxva2_hwaccel_select="h264_decoder"
2674 h264_mediacodec_hwaccel_deps="mediacodec"
2675 h264_mmal_hwaccel_deps="mmal"
2676 h264_qsv_hwaccel_deps="libmfx"
2677 h264_vaapi_hwaccel_deps="vaapi"
2678 h264_vaapi_hwaccel_select="h264_decoder"
2679 h264_vdpau_hwaccel_deps="vdpau"
2680 h264_vdpau_hwaccel_select="h264_decoder"
2681 h264_videotoolbox_hwaccel_deps="videotoolbox"
2682 h264_videotoolbox_hwaccel_select="h264_decoder"
2683 hevc_cuvid_hwaccel_deps="cuda cuvid"
2684 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2685 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2686 hevc_d3d11va_hwaccel_select="hevc_decoder"
2687 hevc_mediacodec_hwaccel_deps="mediacodec"
2688 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2689 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2690 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2691 hevc_dxva2_hwaccel_select="hevc_decoder"
2692 hevc_qsv_hwaccel_deps="libmfx"
2693 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2694 hevc_vaapi_hwaccel_select="hevc_decoder"
2695 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2696 hevc_vdpau_hwaccel_select="hevc_decoder"
2697 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2698 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2699 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2700 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2701 mpeg_xvmc_hwaccel_deps="xvmc"
2702 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2703 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2704 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2705 mpeg1_vdpau_hwaccel_deps="vdpau"
2706 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2707 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2708 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2709 mpeg1_xvmc_hwaccel_deps="xvmc"
2710 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2711 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2712 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2713 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2714 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2715 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2716 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2717 mpeg2_dxva2_hwaccel_deps="dxva2"
2718 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2719 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2720 mpeg2_mmal_hwaccel_deps="mmal"
2721 mpeg2_qsv_hwaccel_deps="libmfx"
2722 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2723 mpeg2_vaapi_hwaccel_deps="vaapi"
2724 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_vdpau_hwaccel_deps="vdpau"
2726 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2728 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_xvmc_hwaccel_deps="xvmc"
2730 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2731 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2732 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2733 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2734 mpeg4_mmal_hwaccel_deps="mmal"
2735 mpeg4_vaapi_hwaccel_deps="vaapi"
2736 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2737 mpeg4_vdpau_hwaccel_deps="vdpau"
2738 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2739 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2740 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2741 vc1_cuvid_hwaccel_deps="cuda cuvid"
2742 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2743 vc1_d3d11va_hwaccel_deps="d3d11va"
2744 vc1_d3d11va_hwaccel_select="vc1_decoder"
2745 vc1_d3d11va2_hwaccel_deps="d3d11va"
2746 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2747 vc1_dxva2_hwaccel_deps="dxva2"
2748 vc1_dxva2_hwaccel_select="vc1_decoder"
2749 vc1_mmal_hwaccel_deps="mmal"
2750 vc1_qsv_hwaccel_deps="libmfx"
2751 vc1_qsv_hwaccel_select="qsvdec_vc1"
2752 vc1_vaapi_hwaccel_deps="vaapi"
2753 vc1_vaapi_hwaccel_select="vc1_decoder"
2754 vc1_vdpau_hwaccel_deps="vdpau"
2755 vc1_vdpau_hwaccel_select="vc1_decoder"
2756 vp8_cuvid_hwaccel_deps="cuda cuvid"
2757 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2758 vp9_cuvid_hwaccel_deps="cuda cuvid"
2759 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2760 vp8_mediacodec_hwaccel_deps="mediacodec"
2761 vp8_qsv_hwaccel_deps="libmfx"
2762 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2763 vp9_d3d11va_hwaccel_select="vp9_decoder"
2764 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2765 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2766 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2767 vp9_dxva2_hwaccel_select="vp9_decoder"
2768 vp9_mediacodec_hwaccel_deps="mediacodec"
2769 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2770 vp9_vaapi_hwaccel_select="vp9_decoder"
2771 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2772 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2773 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2774 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2775 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2776
2777 # hardware-accelerated codecs
2778 omx_deps="libdl pthreads"
2779 omx_rpi_select="omx"
2780 qsvdec_select="qsv"
2781 qsvenc_select="qsv"
2782 vaapi_encode_deps="vaapi"
2783 v4l2_m2m_deps_any="linux_videodev2_h"
2784
2785 hwupload_cuda_filter_deps="cuda"
2786 scale_npp_filter_deps="cuda libnpp"
2787 scale_cuda_filter_deps="cuda_sdk"
2788 thumbnail_cuda_filter_deps="cuda_sdk"
2789
2790 nvenc_deps="cuda"
2791 nvenc_deps_any="libdl LoadLibrary"
2792 nvenc_encoder_deps="nvenc"
2793
2794 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2795 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2796 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2797 h264_cuvid_decoder_deps="cuda cuvid"
2798 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2799 h264_mediacodec_decoder_deps="mediacodec"
2800 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2801 h264_mmal_decoder_deps="mmal"
2802 h264_nvenc_encoder_deps="nvenc"
2803 h264_omx_encoder_deps="omx"
2804 h264_qsv_decoder_deps="libmfx"
2805 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2806 h264_qsv_encoder_deps="libmfx"
2807 h264_qsv_encoder_select="qsvenc"
2808 h264_rkmpp_decoder_deps="rkmpp"
2809 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2810 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2811 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2812 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2813 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2814 hevc_cuvid_decoder_deps="cuda cuvid"
2815 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2816 hevc_mediacodec_decoder_deps="mediacodec"
2817 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2818 hevc_nvenc_encoder_deps="nvenc"
2819 hevc_qsv_decoder_deps="libmfx"
2820 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2821 hevc_qsv_encoder_deps="libmfx"
2822 hevc_qsv_encoder_select="hevcparse qsvenc"
2823 hevc_rkmpp_decoder_deps="rkmpp"
2824 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2825 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2826 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2827 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2828 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2829 mjpeg_cuvid_decoder_deps="cuda cuvid"
2830 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2831 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2832 mpeg1_cuvid_decoder_deps="cuda cuvid"
2833 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2834 mpeg2_crystalhd_decoder_select="crystalhd"
2835 mpeg2_cuvid_decoder_deps="cuda cuvid"
2836 mpeg2_mmal_decoder_deps="mmal"
2837 mpeg2_mediacodec_decoder_deps="mediacodec"
2838 mpeg2_qsv_decoder_deps="libmfx"
2839 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2840 mpeg2_qsv_encoder_deps="libmfx"
2841 mpeg2_qsv_encoder_select="qsvenc"
2842 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2843 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2844 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2845 mpeg4_crystalhd_decoder_select="crystalhd"
2846 mpeg4_cuvid_decoder_deps="cuda cuvid"
2847 mpeg4_mediacodec_decoder_deps="mediacodec"
2848 mpeg4_mmal_decoder_deps="mmal"
2849 mpeg4_omx_encoder_deps="omx"
2850 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2851 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2852 msmpeg4_crystalhd_decoder_select="crystalhd"
2853 nvenc_h264_encoder_select="h264_nvenc_encoder"
2854 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2855 vc1_crystalhd_decoder_select="crystalhd"
2856 vc1_cuvid_decoder_deps="cuda cuvid"
2857 vc1_mmal_decoder_deps="mmal"
2858 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2859 vp8_cuvid_decoder_deps="cuda cuvid"
2860 vp8_mediacodec_decoder_deps="mediacodec"
2861 vp8_qsv_decoder_deps="libmfx"
2862 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2863 vp8_rkmpp_decoder_deps="rkmpp"
2864 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2865 vp8_vaapi_encoder_select="vaapi_encode"
2866 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2867 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2868 vp9_cuvid_decoder_deps="cuda cuvid"
2869 vp9_mediacodec_decoder_deps="mediacodec"
2870 vp9_rkmpp_decoder_deps="rkmpp"
2871 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2872 vp9_vaapi_encoder_select="vaapi_encode"
2873 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2874 wmv3_crystalhd_decoder_select="crystalhd"
2875
2876 # parsers
2877 h264_parser_select="golomb h264dsp h264parse"
2878 hevc_parser_select="hevcparse"
2879 mpegaudio_parser_select="mpegaudioheader"
2880 mpegvideo_parser_select="mpegvideo"
2881 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2882 vc1_parser_select="vc1dsp"
2883
2884 # bitstream_filters
2885 h264_metadata_bsf_select="cbs_h264"
2886 h264_redundant_pps_bsf_select="cbs_h264"
2887 hevc_metadata_bsf_select="cbs_h265"
2888 mjpeg2jpeg_bsf_select="jpegtables"
2889 mpeg2_metadata_bsf_select="cbs_mpeg2"
2890 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2891
2892 # external libraries
2893 aac_at_decoder_deps="audiotoolbox"
2894 ac3_at_decoder_deps="audiotoolbox"
2895 ac3_at_decoder_select="ac3_parser"
2896 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2897 alac_at_decoder_deps="audiotoolbox"
2898 amr_nb_at_decoder_deps="audiotoolbox"
2899 avisynth_deps_any="libdl LoadLibrary"
2900 avisynth_demuxer_deps="avisynth"
2901 avisynth_demuxer_select="riffdec"
2902 eac3_at_decoder_deps="audiotoolbox"
2903 eac3_at_decoder_select="ac3_parser"
2904 gsm_ms_at_decoder_deps="audiotoolbox"
2905 ilbc_at_decoder_deps="audiotoolbox"
2906 mp1_at_decoder_deps="audiotoolbox"
2907 mp2_at_decoder_deps="audiotoolbox"
2908 mp3_at_decoder_deps="audiotoolbox"
2909 mp1_at_decoder_select="mpegaudioheader"
2910 mp2_at_decoder_select="mpegaudioheader"
2911 mp3_at_decoder_select="mpegaudioheader"
2912 pcm_alaw_at_decoder_deps="audiotoolbox"
2913 pcm_mulaw_at_decoder_deps="audiotoolbox"
2914 qdmc_at_decoder_deps="audiotoolbox"
2915 qdm2_at_decoder_deps="audiotoolbox"
2916 aac_at_encoder_deps="audiotoolbox"
2917 aac_at_encoder_select="audio_frame_queue"
2918 alac_at_encoder_deps="audiotoolbox"
2919 alac_at_encoder_select="audio_frame_queue"
2920 ilbc_at_encoder_deps="audiotoolbox"
2921 ilbc_at_encoder_select="audio_frame_queue"
2922 pcm_alaw_at_encoder_deps="audiotoolbox"
2923 pcm_alaw_at_encoder_select="audio_frame_queue"
2924 pcm_mulaw_at_encoder_deps="audiotoolbox"
2925 pcm_mulaw_at_encoder_select="audio_frame_queue"
2926 chromaprint_muxer_deps="chromaprint"
2927 h264_videotoolbox_encoder_deps="pthreads"
2928 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2929 libcelt_decoder_deps="libcelt"
2930 libfdk_aac_decoder_deps="libfdk_aac"
2931 libfdk_aac_encoder_deps="libfdk_aac"
2932 libfdk_aac_encoder_select="audio_frame_queue"
2933 libgme_demuxer_deps="libgme"
2934 libgsm_decoder_deps="libgsm"
2935 libgsm_encoder_deps="libgsm"
2936 libgsm_ms_decoder_deps="libgsm"
2937 libgsm_ms_encoder_deps="libgsm"
2938 libilbc_decoder_deps="libilbc"
2939 libilbc_encoder_deps="libilbc"
2940 libkvazaar_encoder_deps="libkvazaar"
2941 libmodplug_demuxer_deps="libmodplug"
2942 libmp3lame_encoder_deps="libmp3lame"
2943 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2944 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2945 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2946 libopencore_amrnb_encoder_select="audio_frame_queue"
2947 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2948 libopenh264_decoder_deps="libopenh264"
2949 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2950 libopenh264_encoder_deps="libopenh264"
2951 libopenjpeg_decoder_deps="libopenjpeg"
2952 libopenjpeg_encoder_deps="libopenjpeg"
2953 libopenmpt_demuxer_deps="libopenmpt"
2954 libopus_decoder_deps="libopus"
2955 libopus_encoder_deps="libopus"
2956 libopus_encoder_select="audio_frame_queue"
2957 librsvg_decoder_deps="librsvg"
2958 libshine_encoder_deps="libshine"
2959 libshine_encoder_select="audio_frame_queue"
2960 libspeex_decoder_deps="libspeex"
2961 libspeex_encoder_deps="libspeex"
2962 libspeex_encoder_select="audio_frame_queue"
2963 libtheora_encoder_deps="libtheora"
2964 libtwolame_encoder_deps="libtwolame"
2965 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2966 libvorbis_decoder_deps="libvorbis"
2967 libvorbis_encoder_deps="libvorbis libvorbisenc"
2968 libvorbis_encoder_select="audio_frame_queue"
2969 libvpx_vp8_decoder_deps="libvpx"
2970 libvpx_vp8_encoder_deps="libvpx"
2971 libvpx_vp9_decoder_deps="libvpx"
2972 libvpx_vp9_encoder_deps="libvpx"
2973 libwavpack_encoder_deps="libwavpack"
2974 libwavpack_encoder_select="audio_frame_queue"
2975 libwebp_encoder_deps="libwebp"
2976 libwebp_anim_encoder_deps="libwebp"
2977 libx262_encoder_deps="libx262"
2978 libx264_encoder_deps="libx264"
2979 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2980 libx264rgb_encoder_select="libx264_encoder"
2981 libx265_encoder_deps="libx265"
2982 libxavs_encoder_deps="libxavs"
2983 libxvid_encoder_deps="libxvid"
2984 libzvbi_teletext_decoder_deps="libzvbi"
2985 videotoolbox_suggest="coreservices"
2986 videotoolbox_deps="corefoundation coremedia corevideo"
2987 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2988
2989 # demuxers / muxers
2990 ac3_demuxer_select="ac3_parser"
2991 aiff_muxer_select="iso_media"
2992 asf_demuxer_select="riffdec"
2993 asf_o_demuxer_select="riffdec"
2994 asf_muxer_select="riffenc"
2995 asf_stream_muxer_select="asf_muxer"
2996 avi_demuxer_select="iso_media riffdec exif"
2997 avi_muxer_select="riffenc"
2998 caf_demuxer_select="iso_media riffdec"
2999 caf_muxer_select="iso_media"
3000 dash_muxer_select="mp4_muxer"
3001 dash_demuxer_deps="libxml2"
3002 dirac_demuxer_select="dirac_parser"
3003 dts_demuxer_select="dca_parser"
3004 dtshd_demuxer_select="dca_parser"
3005 dv_demuxer_select="dvprofile"
3006 dv_muxer_select="dvprofile"
3007 dxa_demuxer_select="riffdec"
3008 eac3_demuxer_select="ac3_parser"
3009 f4v_muxer_select="mov_muxer"
3010 fifo_muxer_deps="threads"
3011 flac_demuxer_select="flac_parser"
3012 hds_muxer_select="flv_muxer"
3013 hls_muxer_select="mpegts_muxer"
3014 hls_muxer_suggest="gcrypt openssl"
3015 image2_alias_pix_demuxer_select="image2_demuxer"
3016 image2_brender_pix_demuxer_select="image2_demuxer"
3017 ipod_muxer_select="mov_muxer"
3018 ismv_muxer_select="mov_muxer"
3019 matroska_audio_muxer_select="matroska_muxer"
3020 matroska_demuxer_select="iso_media riffdec"
3021 matroska_demuxer_suggest="bzlib lzo zlib"
3022 matroska_muxer_select="iso_media riffenc"
3023 mmf_muxer_select="riffenc"
3024 mov_demuxer_select="iso_media riffdec"
3025 mov_demuxer_suggest="zlib"
3026 mov_muxer_select="iso_media riffenc rtpenc_chain"
3027 mp3_demuxer_select="mpegaudio_parser"
3028 mp3_muxer_select="mpegaudioheader"
3029 mp4_muxer_select="mov_muxer"
3030 mpegts_demuxer_select="iso_media"
3031 mpegts_muxer_select="adts_muxer latm_muxer"
3032 mpegtsraw_demuxer_select="mpegts_demuxer"
3033 mxf_d10_muxer_select="mxf_muxer"
3034 mxf_opatom_muxer_select="mxf_muxer"
3035 nut_muxer_select="riffenc"
3036 nuv_demuxer_select="riffdec"
3037 oga_muxer_select="ogg_muxer"
3038 ogg_demuxer_select="dirac_parse"
3039 ogv_muxer_select="ogg_muxer"
3040 opus_muxer_select="ogg_muxer"
3041 psp_muxer_select="mov_muxer"
3042 rtp_demuxer_select="sdp_demuxer"
3043 rtp_muxer_select="golomb"
3044 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3045 rtsp_demuxer_select="http_protocol rtpdec"
3046 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3047 sap_demuxer_select="sdp_demuxer"
3048 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3049 sdp_demuxer_select="rtpdec"
3050 smoothstreaming_muxer_select="ismv_muxer"
3051 spdif_muxer_select="aac_parser"
3052 spx_muxer_select="ogg_muxer"
3053 swf_demuxer_suggest="zlib"
3054 tak_demuxer_select="tak_parser"
3055 tg2_muxer_select="mov_muxer"
3056 tgp_muxer_select="mov_muxer"
3057 vobsub_demuxer_select="mpegps_demuxer"
3058 w64_demuxer_select="wav_demuxer"
3059 w64_muxer_select="wav_muxer"
3060 wav_demuxer_select="riffdec"
3061 wav_muxer_select="riffenc"
3062 webm_muxer_select="iso_media riffenc"
3063 webm_dash_manifest_demuxer_select="matroska_demuxer"
3064 wtv_demuxer_select="mpegts_demuxer riffdec"
3065 wtv_muxer_select="mpegts_muxer riffenc"
3066 xmv_demuxer_select="riffdec"
3067 xwma_demuxer_select="riffdec"
3068
3069 # indevs / outdevs
3070 alsa_indev_deps="alsa"
3071 alsa_outdev_deps="alsa"
3072 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3073 avfoundation_indev_suggest="coregraphics applicationservices"
3074 avfoundation_indev_extralibs="-framework Foundation"
3075 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3076 caca_outdev_deps="libcaca"
3077 decklink_deps_any="libdl LoadLibrary"
3078 decklink_indev_deps="decklink threads"
3079 decklink_indev_extralibs="-lstdc++"
3080 decklink_outdev_deps="decklink threads"
3081 decklink_outdev_extralibs="-lstdc++"
3082 libndi_newtek_indev_deps="libndi_newtek"
3083 libndi_newtek_indev_extralibs="-lndi"
3084 libndi_newtek_outdev_deps="libndi_newtek"
3085 libndi_newtek_outdev_extralibs="-lndi"
3086 dshow_indev_deps="IBaseFilter"
3087 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3088 fbdev_indev_deps="linux_fb_h"
3089 fbdev_outdev_deps="linux_fb_h"
3090 gdigrab_indev_deps="CreateDIBSection"
3091 gdigrab_indev_extralibs="-lgdi32"
3092 gdigrab_indev_select="bmp_decoder"
3093 iec61883_indev_deps="libiec61883"
3094 jack_indev_deps="libjack"
3095 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3096 kmsgrab_indev_deps="libdrm"
3097 lavfi_indev_deps="avfilter"
3098 libcdio_indev_deps="libcdio"
3099 libdc1394_indev_deps="libdc1394"
3100 openal_indev_deps="openal"
3101 opengl_outdev_deps="opengl"
3102 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3103 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3104 pulse_indev_deps="libpulse"
3105 pulse_outdev_deps="libpulse"
3106 sdl2_outdev_deps="sdl2"
3107 sndio_indev_deps="sndio"
3108 sndio_outdev_deps="sndio"
3109 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3110 v4l2_indev_suggest="libv4l2"
3111 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3112 v4l2_outdev_suggest="libv4l2"
3113 vfwcap_indev_deps="vfw32 vfwcap_defines"
3114 xcbgrab_indev_deps="libxcb"
3115 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3116 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3117 xv_outdev_extralibs="-lXv -lX11 -lXext"
3118
3119 # protocols
3120 async_protocol_deps="threads"
3121 bluray_protocol_deps="libbluray"
3122 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3123 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3124 ffrtmpcrypt_protocol_select="tcp_protocol"
3125 ffrtmphttp_protocol_conflict="librtmp_protocol"
3126 ffrtmphttp_protocol_select="http_protocol"
3127 ftp_protocol_select="tcp_protocol"
3128 gopher_protocol_select="network"
3129 http_protocol_select="tcp_protocol"
3130 http_protocol_suggest="zlib"
3131 httpproxy_protocol_select="tcp_protocol"
3132 httpproxy_protocol_suggest="zlib"
3133 https_protocol_select="tls_protocol"
3134 https_protocol_suggest="zlib"
3135 icecast_protocol_select="http_protocol"
3136 librtmp_protocol_deps="librtmp"
3137 librtmpe_protocol_deps="librtmp"
3138 librtmps_protocol_deps="librtmp"
3139 librtmpt_protocol_deps="librtmp"
3140 librtmpte_protocol_deps="librtmp"
3141 libsmbclient_protocol_deps="libsmbclient gplv3"
3142 libssh_protocol_deps="libssh"
3143 mmsh_protocol_select="http_protocol"
3144 mmst_protocol_select="network"
3145 rtmp_protocol_conflict="librtmp_protocol"
3146 rtmp_protocol_select="tcp_protocol"
3147 rtmp_protocol_suggest="zlib"
3148 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3149 rtmpe_protocol_suggest="zlib"
3150 rtmps_protocol_conflict="librtmp_protocol"
3151 rtmps_protocol_select="tls_protocol"
3152 rtmps_protocol_suggest="zlib"
3153 rtmpt_protocol_select="ffrtmphttp_protocol"
3154 rtmpt_protocol_suggest="zlib"
3155 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3156 rtmpte_protocol_suggest="zlib"
3157 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3158 rtmpts_protocol_suggest="zlib"
3159 rtp_protocol_select="udp_protocol"
3160 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3161 sctp_protocol_select="network"
3162 srtp_protocol_select="rtp_protocol srtp"
3163 tcp_protocol_select="network"
3164 tls_gnutls_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol"
3165 tls_gnutls_protocol_deps="gnutls"
3166 tls_gnutls_protocol_select="tcp_protocol"
3167 tls_openssl_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol"
3168 tls_openssl_protocol_deps="openssl"
3169 tls_openssl_protocol_select="tcp_protocol"
3170 tls_schannel_protocol_deps="schannel"
3171 tls_schannel_protocol_select="tcp_protocol"
3172 tls_securetransport_protocol_deps="securetransport"
3173 tls_securetransport_protocol_select="tcp_protocol"
3174 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3175 udp_protocol_select="network"
3176 udplite_protocol_select="network"
3177 unix_protocol_deps="sys_un_h"
3178 unix_protocol_select="network"
3179
3180 # filters
3181 afftfilt_filter_deps="avcodec"
3182 afftfilt_filter_select="fft"
3183 afir_filter_deps="avcodec"
3184 afir_filter_select="fft"
3185 amovie_filter_deps="avcodec avformat"
3186 aresample_filter_deps="swresample"
3187 ass_filter_deps="libass"
3188 atempo_filter_deps="avcodec"
3189 atempo_filter_select="rdft"
3190 azmq_filter_deps="libzmq"
3191 blackframe_filter_deps="gpl"
3192 boxblur_filter_deps="gpl"
3193 bs2b_filter_deps="libbs2b"
3194 colormatrix_filter_deps="gpl"
3195 coreimage_filter_deps="coreimage appkit"
3196 coreimage_filter_extralibs="-framework OpenGL"
3197 coreimagesrc_filter_deps="coreimage appkit"
3198 coreimagesrc_filter_extralibs="-framework OpenGL"
3199 cover_rect_filter_deps="avcodec avformat gpl"
3200 cropdetect_filter_deps="gpl"
3201 deinterlace_qsv_filter_deps="libmfx"
3202 deinterlace_vaapi_filter_deps="vaapi"
3203 delogo_filter_deps="gpl"
3204 deshake_filter_select="pixelutils"
3205 deshake_filter_suggest="opencl"
3206 drawtext_filter_deps="libfreetype"
3207 drawtext_filter_suggest="libfontconfig libfribidi"
3208 elbg_filter_deps="avcodec"
3209 eq_filter_deps="gpl"
3210 fftfilt_filter_deps="avcodec"
3211 fftfilt_filter_select="rdft"
3212 find_rect_filter_deps="avcodec avformat gpl"
3213 firequalizer_filter_deps="avcodec"
3214 firequalizer_filter_select="rdft"
3215 flite_filter_deps="libflite"
3216 framerate_filter_select="pixelutils"
3217 frei0r_filter_deps="frei0r libdl"
3218 frei0r_src_filter_deps="frei0r libdl"
3219 fspp_filter_deps="gpl"
3220 geq_filter_deps="gpl"
3221 histeq_filter_deps="gpl"
3222 hqdn3d_filter_deps="gpl"
3223 interlace_filter_deps="gpl"
3224 kerndeint_filter_deps="gpl"
3225 ladspa_filter_deps="ladspa libdl"
3226 mcdeint_filter_deps="avcodec gpl"
3227 movie_filter_deps="avcodec avformat"
3228 mpdecimate_filter_deps="gpl"
3229 mpdecimate_filter_select="pixelutils"
3230 mptestsrc_filter_deps="gpl"
3231 negate_filter_deps="lut_filter"
3232 nnedi_filter_deps="gpl"
3233 ocr_filter_deps="libtesseract"
3234 ocv_filter_deps="libopencv"
3235 owdenoise_filter_deps="gpl"
3236 pan_filter_deps="swresample"
3237 perspective_filter_deps="gpl"
3238 phase_filter_deps="gpl"
3239 pp7_filter_deps="gpl"
3240 pp_filter_deps="gpl postproc"
3241 pullup_filter_deps="gpl"
3242 removelogo_filter_deps="avcodec avformat swscale"
3243 repeatfields_filter_deps="gpl"
3244 resample_filter_deps="avresample"
3245 rubberband_filter_deps="librubberband"
3246 sab_filter_deps="gpl swscale"
3247 scale2ref_filter_deps="swscale"
3248 scale_filter_deps="swscale"
3249 scale_qsv_filter_deps="libmfx"
3250 select_filter_select="pixelutils"
3251 showcqt_filter_deps="avcodec avformat swscale"
3252 showcqt_filter_suggest="libfontconfig libfreetype"
3253 showcqt_filter_select="fft"
3254 showfreqs_filter_deps="avcodec"
3255 showfreqs_filter_select="fft"
3256 showspectrum_filter_deps="avcodec"
3257 showspectrum_filter_select="fft"
3258 showspectrumpic_filter_deps="avcodec"
3259 showspectrumpic_filter_select="fft"
3260 signature_filter_deps="gpl avcodec avformat"
3261 smartblur_filter_deps="gpl swscale"
3262 sofalizer_filter_deps="libmysofa avcodec"
3263 sofalizer_filter_select="fft"
3264 spectrumsynth_filter_deps="avcodec"
3265 spectrumsynth_filter_select="fft"
3266 spp_filter_deps="gpl avcodec"
3267 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3268 stereo3d_filter_deps="gpl"
3269 subtitles_filter_deps="avformat avcodec libass"
3270 super2xsai_filter_deps="gpl"
3271 pixfmts_super2xsai_test_deps="super2xsai_filter"
3272 tinterlace_filter_deps="gpl"
3273 tinterlace_merge_test_deps="tinterlace_filter"
3274 tinterlace_pad_test_deps="tinterlace_filter"
3275 tonemap_filter_deps="const_nan"
3276 uspp_filter_deps="gpl avcodec"
3277 unsharp_filter_suggest="opencl"
3278 vaguedenoiser_filter_deps="gpl"
3279 vidstabdetect_filter_deps="libvidstab"
3280 vidstabtransform_filter_deps="libvidstab"
3281 libvmaf_filter_deps="libvmaf"
3282 zmq_filter_deps="libzmq"
3283 zoompan_filter_deps="swscale"
3284 zscale_filter_deps="libzimg const_nan"
3285 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3286
3287 # examples
3288 avio_dir_cmd_deps="avformat avutil"
3289 avio_reading_deps="avformat avcodec avutil"
3290 decode_audio_example_deps="avcodec avutil"
3291 decode_video_example_deps="avcodec avutil"
3292 demuxing_decoding_example_deps="avcodec avformat avutil"
3293 encode_audio_example_deps="avcodec avutil"
3294 encode_video_example_deps="avcodec avutil"
3295 extract_mvs_example_deps="avcodec avformat avutil"
3296 filter_audio_example_deps="avfilter avutil"
3297 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3298 filtering_video_example_deps="avfilter avcodec avformat avutil"
3299 http_multiclient_example_deps="avformat avutil fork"
3300 hw_decode_example_deps="avcodec avformat avutil"
3301 metadata_example_deps="avformat avutil"
3302 muxing_example_deps="avcodec avformat avutil swscale"
3303 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3304 remuxing_example_deps="avcodec avformat avutil"
3305 resampling_audio_example_deps="avutil swresample"
3306 scaling_video_example_deps="avutil swscale"
3307 transcode_aac_example_deps="avcodec avformat swresample"
3308 transcoding_example_deps="avfilter avcodec avformat avutil"
3309
3310 # EXTRALIBS_LIST
3311 cpu_init_extralibs="pthreads_extralibs"
3312 cws2fws_extralibs="zlib_extralibs"
3313
3314 # libraries, in linking order
3315 avcodec_deps="avutil"
3316 avcodec_suggest="libm"
3317 avcodec_select="null_bsf"
3318 avdevice_deps="avformat avcodec avutil"
3319 avdevice_suggest="libm"
3320 avfilter_deps="avutil"
3321 avfilter_suggest="libm"
3322 avformat_deps="avcodec avutil"
3323 avformat_suggest="libm network"
3324 avresample_deps="avutil"
3325 avresample_suggest="libm"
3326 avutil_suggest="clock_gettime libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3327 postproc_deps="avutil gpl"
3328 postproc_suggest="libm"
3329 swresample_deps="avutil"
3330 swresample_suggest="libm libsoxr"
3331 swscale_deps="avutil"
3332 swscale_suggest="libm"
3333
3334 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3335 avfilter_extralibs="pthreads_extralibs"
3336 avutil_extralibs="nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3337
3338 # programs
3339 ffmpeg_deps="avcodec avfilter avformat swresample"
3340 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3341                null_filter
3342                trim_filter"
3343 ffmpeg_suggest="ole32 psapi shell32"
3344 ffplay_deps="avcodec avformat swscale swresample sdl2"
3345 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3346 ffplay_suggest="shell32"
3347 ffprobe_deps="avcodec avformat"
3348 ffprobe_suggest="shell32"
3349 ffserver_deps="avformat fork sarestart"
3350 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3351
3352 # documentation
3353 podpages_deps="perl"
3354 manpages_deps="perl pod2man"
3355 htmlpages_deps="perl"
3356 htmlpages_deps_any="makeinfo_html texi2html"
3357 txtpages_deps="perl makeinfo"
3358 doc_deps_any="manpages htmlpages podpages txtpages"
3359
3360 # default parameters
3361
3362 logfile="ffbuild/config.log"
3363
3364 # installation paths
3365 prefix_default="/usr/local"
3366 bindir_default='${prefix}/bin'
3367 datadir_default='${prefix}/share/ffmpeg'
3368 docdir_default='${prefix}/share/doc/ffmpeg'
3369 incdir_default='${prefix}/include'
3370 libdir_default='${prefix}/lib'
3371 mandir_default='${prefix}/share/man'
3372
3373 # toolchain
3374 ar_default="ar"
3375 cc_default="gcc"
3376 cxx_default="g++"
3377 host_cc_default="gcc"
3378 doxygen_default="doxygen"
3379 install="install"
3380 ln_s_default="ln -s -f"
3381 nm_default="nm -g"
3382 pkg_config_default=pkg-config
3383 ranlib_default="ranlib"
3384 strip_default="strip"
3385 version_script='--version-script'
3386 x86asmexe_default="nasm"
3387 windres_default="windres"
3388 nvcc_default="nvcc"
3389 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3390 striptype="direct"
3391
3392 # OS
3393 target_os_default=$(tolower $(uname -s))
3394 host_os=$target_os_default
3395
3396 # machine
3397 if test "$target_os_default" = aix; then
3398     arch_default=$(uname -p)
3399     strip_default="strip -X32_64"
3400 else
3401     arch_default=$(uname -m)
3402 fi
3403 cpu="generic"
3404 intrinsics="none"
3405
3406 # configurable options
3407 enable $PROGRAM_LIST
3408 enable $DOCUMENT_LIST
3409 enable $EXAMPLE_LIST
3410 enable $(filter_out avresample $LIBRARY_LIST)
3411 enable stripping
3412
3413 enable asm
3414 enable debug
3415 enable doc
3416 enable faan faandct faanidct
3417 enable optimizations
3418 enable runtime_cpudetect
3419 enable safe_bitstream_reader
3420 enable static
3421 enable swscale_alpha
3422 enable valgrind_backtrace
3423
3424 sws_max_filter_size_default=256
3425 set_default sws_max_filter_size
3426
3427 # internal components are enabled by default
3428 enable $EXTRALIBS_LIST
3429
3430 # Avoid external, non-system, libraries getting enabled by dependency resolution
3431 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3432
3433 # build settings
3434 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3435 LIBPREF="lib"
3436 LIBSUF=".a"
3437 FULLNAME='$(NAME)$(BUILDSUF)'
3438 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3439 SLIBPREF="lib"
3440 SLIBSUF=".so"
3441 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3442 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3443 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3444 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3445 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3446 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3447 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3448
3449 asflags_filter=echo
3450 cflags_filter=echo
3451 ldflags_filter=echo
3452
3453 AS_C='-c'
3454 AS_O='-o $@'
3455 CC_C='-c'
3456 CC_E='-E -o $@'
3457 CC_O='-o $@'
3458 CXX_C='-c'
3459 CXX_O='-o $@'
3460 OBJCC_C='-c'
3461 OBJCC_E='-E -o $@'
3462 OBJCC_O='-o $@'
3463 X86ASM_O='-o $@'
3464 LD_O='-o $@'
3465 LD_LIB='-l%'
3466 LD_PATH='-L'
3467 HOSTCC_C='-c'
3468 HOSTCC_E='-E -o $@'
3469 HOSTCC_O='-o $@'
3470 HOSTLD_O='-o $@'
3471 NVCC_C='-c'
3472 NVCC_O='-o $@'
3473
3474 host_extralibs='-lm'
3475 host_cflags_filter=echo
3476 host_ldflags_filter=echo
3477
3478 target_path='$(CURDIR)'
3479
3480 # since the object filename is not given with the -MM flag, the compiler
3481 # is only able to print the basename, and we must add the path ourselves
3482 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3483 DEPFLAGS='-MM'
3484
3485 mkdir -p ffbuild
3486
3487 # find source path
3488 if test -f configure; then
3489     source_path=.
3490 else
3491     source_path=$(cd $(dirname "$0"); pwd)
3492     case "$source_path" in
3493         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3494     esac
3495     test -e "$source_path/config.h" &&
3496         die "Out of tree builds are impossible with config.h in source dir."
3497 fi
3498
3499 for v in "$@"; do
3500     r=${v#*=}
3501     l=${v%"$r"}
3502     r=$(sh_quote "$r")
3503     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3504 done
3505
3506 find_things(){
3507     thing=$1
3508     pattern=$2
3509     file=$source_path/$3
3510     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3511 }
3512
3513 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3514 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3515 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3516 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3517 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3518 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3519 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3520 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3521 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3522
3523 find_things_extern(){
3524     thing=$1
3525     pattern=$2
3526     file=$source_path/$3
3527     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3528 }
3529
3530 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3531 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3532
3533 AVCODEC_COMPONENTS_LIST="
3534     $BSF_LIST
3535     $DECODER_LIST
3536     $ENCODER_LIST
3537     $HWACCEL_LIST
3538     $PARSER_LIST
3539 "
3540
3541 AVDEVICE_COMPONENTS_LIST="
3542     $INDEV_LIST
3543     $OUTDEV_LIST
3544 "
3545
3546 AVFILTER_COMPONENTS_LIST="
3547     $FILTER_LIST
3548 "
3549
3550 AVFORMAT_COMPONENTS_LIST="
3551     $DEMUXER_LIST
3552     $MUXER_LIST
3553     $PROTOCOL_LIST
3554 "
3555
3556 ALL_COMPONENTS="
3557     $AVCODEC_COMPONENTS_LIST
3558     $AVDEVICE_COMPONENTS_LIST
3559     $AVFILTER_COMPONENTS_LIST
3560     $AVFORMAT_COMPONENTS_LIST
3561 "
3562
3563 for n in $COMPONENT_LIST; do
3564     v=$(toupper ${n%s})_LIST
3565     eval enable \$$v
3566     eval ${n}_if_any="\$$v"
3567 done
3568
3569 enable $ARCH_EXT_LIST
3570
3571 die_unknown(){
3572     echo "Unknown option \"$1\"."
3573     echo "See $0 --help for available options."
3574     exit 1
3575 }
3576
3577 print_in_columns() {
3578     cols=$(expr $ncols / 24)
3579     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3580 }
3581
3582 show_list() {
3583     suffix=_$1
3584     shift
3585     echo $* | sed s/$suffix//g | print_in_columns
3586     exit 0
3587 }
3588
3589 rand_list(){
3590     IFS=', '
3591     set -- $*
3592     unset IFS
3593     for thing; do
3594         comp=${thing%:*}
3595         prob=${thing#$comp}
3596         prob=${prob#:}
3597         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3598         echo "prob ${prob:-0.5}"
3599         printf '%s\n' $comp
3600     done
3601 }
3602
3603 do_random(){
3604     action=$1
3605     shift
3606     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3607     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3608 }
3609
3610 for opt do
3611     optval="${opt#*=}"
3612     case "$opt" in
3613         --extra-ldflags=*)
3614             add_ldflags $optval
3615         ;;
3616         --extra-ldexeflags=*)
3617             add_ldexeflags $optval
3618         ;;
3619         --extra-ldlibflags=*)
3620             add_ldlibflags $optval
3621         ;;
3622         --extra-libs=*)
3623             add_extralibs $optval
3624         ;;
3625         --disable-devices)
3626             disable $INDEV_LIST $OUTDEV_LIST
3627         ;;
3628         --enable-debug=*)
3629             debuglevel="$optval"
3630         ;;
3631         --disable-programs)
3632             disable $PROGRAM_LIST
3633         ;;
3634         --disable-everything)
3635             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3636         ;;
3637         --disable-all)
3638             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3639             disable $LIBRARY_LIST $PROGRAM_LIST doc
3640             enable avutil
3641         ;;
3642         --enable-random|--disable-random)
3643             action=${opt%%-random}
3644             do_random ${action#--} $COMPONENT_LIST
3645         ;;
3646         --enable-random=*|--disable-random=*)
3647             action=${opt%%-random=*}
3648             do_random ${action#--} $optval
3649         ;;
3650         --enable-sdl)
3651             enable sdl2
3652         ;;
3653         --enable-*=*|--disable-*=*)
3654             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3655             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3656             eval list=\$$(toupper $thing)_LIST
3657             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3658             list=$(filter "$name" $list)
3659             [ "$list" = "" ] && warn "Option $opt did not match anything"
3660             $action $list
3661         ;;
3662         --enable-yasm|--disable-yasm)
3663             warn "The ${opt} option is only provided for compatibility and will be\n"\
3664                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3665             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3666         ;;
3667         --yasmexe=*)
3668             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3669                  "removed in the future. Use --x86asmexe instead."
3670             x86asmexe="$optval"
3671         ;;
3672         --enable-?*|--disable-?*)
3673             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3674             if is_in $option $COMPONENT_LIST; then
3675                 test $action = disable && action=unset
3676                 eval $action \$$(toupper ${option%s})_LIST
3677             elif is_in $option $CMDLINE_SELECT; then
3678                 $action $option
3679             else
3680                 die_unknown $opt
3681             fi
3682         ;;
3683         --list-*)
3684             NAME="${opt#--list-}"
3685             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3686             NAME=${NAME%s}
3687             eval show_list $NAME \$$(toupper $NAME)_LIST
3688         ;;
3689         --help|-h) show_help
3690         ;;
3691         --quiet|-q) quiet=yes
3692         ;;
3693         --fatal-warnings) enable fatal_warnings
3694         ;;
3695         --libfuzzer=*)
3696             libfuzzer_path="$optval"
3697         ;;
3698         *)
3699             optname="${opt%%=*}"
3700             optname="${optname#--}"
3701             optname=$(echo "$optname" | sed 's/-/_/g')
3702             if is_in $optname $CMDLINE_SET; then
3703                 eval $optname='$optval'
3704             elif is_in $optname $CMDLINE_APPEND; then
3705                 append $optname "$optval"
3706             else
3707                 die_unknown $opt
3708             fi
3709         ;;
3710     esac
3711 done
3712
3713 for e in $env; do
3714     eval "export $e"
3715 done
3716
3717 if disabled autodetect; then
3718
3719     # Unless iconv is explicitely disabled by the user, we still want to probe
3720     # for the iconv from the libc.
3721     disabled iconv || enable libc_iconv
3722
3723     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3724     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3725 fi
3726 # Mark specifically enabled, but normally autodetected libraries as requested.
3727 for lib in $AUTODETECT_LIBS; do
3728     enabled $lib && request $lib
3729 done
3730 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3731 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3732 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3733
3734 disabled logging && logfile=/dev/null
3735
3736 die_license_disabled() {
3737     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3738 }
3739
3740 die_license_disabled_gpl() {
3741     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3742 }
3743
3744 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3745 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3746
3747 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3748 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3749
3750 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3751
3752 # Disable all the library-specific components if the library itself
3753 # is disabled, see AVCODEC_LIST and following _LIST variables.
3754
3755 disable_components(){
3756     disabled ${1} && disable $(
3757         eval components="\$$(toupper ${1})_COMPONENTS"
3758         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3759     )
3760 }
3761
3762 map 'disable_components $v' $LIBRARY_LIST
3763
3764 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3765 set >> $logfile
3766
3767 test -n "$valgrind" && toolchain="valgrind-memcheck"
3768
3769 enabled ossfuzz && {
3770     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3771     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3772 }
3773
3774 case "$toolchain" in
3775     *-asan)
3776         cc_default="${toolchain%-asan}"
3777         add_cflags  -fsanitize=address
3778         add_ldflags -fsanitize=address
3779     ;;
3780     *-msan)
3781         cc_default="${toolchain%-msan}"
3782         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3783         add_ldflags -fsanitize=memory
3784     ;;
3785     *-tsan)
3786         cc_default="${toolchain%-tsan}"
3787         add_cflags  -fsanitize=thread -fPIE
3788         add_ldflags -fsanitize=thread -pie
3789         case "$toolchain" in
3790             gcc-tsan)
3791                 add_cflags  -fPIC
3792                 add_ldflags -fPIC
3793                 ;;
3794         esac
3795     ;;
3796     *-usan)
3797         cc_default="${toolchain%-usan}"
3798         add_cflags  -fsanitize=undefined
3799         add_ldflags -fsanitize=undefined
3800     ;;
3801     valgrind-*)
3802         target_exec_default="valgrind"
3803         case "$toolchain" in
3804             valgrind-massif)
3805                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3806                 ;;
3807             valgrind-memcheck)
3808                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3809                 ;;
3810         esac
3811     ;;
3812     msvc)
3813         # Check whether the current MSVC version needs the C99 converter.
3814         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3815         # support enough of C99 to build ffmpeg. Default to the new
3816         # behaviour if the regexp was unable to match anything, since this
3817         # successfully parses the version number of existing supported
3818         # versions that require the converter (MSVC 2010 and 2012).
3819         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3820         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3821             cc_default="cl"
3822             cxx_default="cl"
3823         else
3824             cc_default="c99wrap cl"
3825             cxx_default="c99wrap cl"
3826         fi
3827         ld_default="$source_path/compat/windows/mslink"
3828         nm_default="dumpbin -symbols"
3829         ar_default="lib"
3830         case "$arch" in
3831         arm*)
3832             as_default="armasm"
3833             ;;
3834         esac
3835         target_os_default="win32"
3836         # Use a relative path for TMPDIR. This makes sure all the
3837         # ffconf temp files are written with a relative path, avoiding
3838         # issues with msys/win32 path conversion for MSVC parameters
3839         # such as -Fo<file> or -out:<file>.
3840         TMPDIR=.
3841     ;;
3842     icl)
3843         cc_default="icl"
3844         ld_default="xilink"
3845         nm_default="dumpbin -symbols"
3846         ar_default="xilib"
3847         target_os_default="win32"
3848         TMPDIR=.
3849     ;;
3850     gcov)
3851         add_cflags  -fprofile-arcs -ftest-coverage
3852         add_ldflags -fprofile-arcs -ftest-coverage
3853     ;;
3854     llvm-cov)
3855         add_cflags -fprofile-arcs -ftest-coverage
3856         add_ldflags --coverage
3857     ;;
3858     hardened)
3859         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3860         add_cflags   -fno-strict-overflow -fstack-protector-all
3861         add_ldflags  -Wl,-z,relro -Wl,-z,now
3862         add_cflags   -fPIE
3863         add_ldexeflags -fPIE -pie
3864     ;;
3865     ?*)
3866         die "Unknown toolchain $toolchain"
3867     ;;
3868 esac
3869
3870 test -n "$cross_prefix" && enable cross_compile
3871
3872 if enabled cross_compile; then
3873     test -n "$arch" && test -n "$target_os" ||
3874         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3875 fi
3876
3877 ar_default="${cross_prefix}${ar_default}"
3878 cc_default="${cross_prefix}${cc_default}"
3879 cxx_default="${cross_prefix}${cxx_default}"
3880 nm_default="${cross_prefix}${nm_default}"
3881 pkg_config_default="${cross_prefix}${pkg_config_default}"
3882 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3883     ranlib_default="${cross_prefix}${ranlib_default} -D"
3884 else
3885     ranlib_default="${cross_prefix}${ranlib_default}"
3886 fi
3887 strip_default="${cross_prefix}${strip_default}"
3888 windres_default="${cross_prefix}${windres_default}"
3889
3890 sysinclude_default="${sysroot}/usr/include"
3891
3892 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3893     target_exec target_os x86asmexe nvcc
3894 enabled cross_compile || host_cc_default=$cc
3895 set_default host_cc
3896
3897 pkg_config_fail_message=""
3898 if ! $pkg_config --version >/dev/null 2>&1; then
3899     warn "$pkg_config not found, library detection may fail."
3900     pkg_config=false
3901 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3902     pkg_config_fail_message="
3903 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3904 fi
3905
3906 if test $doxygen != $doxygen_default && \
3907   ! $doxygen --version >/dev/null 2>&1; then
3908     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3909 fi
3910
3911 exesuf() {
3912     case $1 in
3913         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3914     esac
3915 }
3916
3917 EXESUF=$(exesuf $target_os)
3918 HOSTEXESUF=$(exesuf $host_os)
3919
3920 # set temporary file name
3921 : ${TMPDIR:=$TEMPDIR}
3922 : ${TMPDIR:=$TMP}
3923 : ${TMPDIR:=/tmp}
3924
3925 if [ -n "$tempprefix" ] ; then
3926     mktemp(){
3927         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3928         echo "$tmpname"
3929         mkdir "$tmpname"
3930     }
3931 elif ! check_cmd mktemp -u XXXXXX; then
3932     # simple replacement for missing mktemp
3933     # NOT SAFE FOR GENERAL USE
3934     mktemp(){
3935         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3936         echo "$tmpname"
3937         mkdir "$tmpname"
3938     }
3939 fi
3940
3941 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3942     die "Unable to create temporary directory in $TMPDIR."
3943
3944 tmpfile(){
3945     tmp="${FFTMPDIR}/test"$2
3946     (set -C; exec > $tmp) 2> /dev/null ||
3947         die "Unable to create temporary file in $FFTMPDIR."
3948     eval $1=$tmp
3949 }
3950
3951 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3952 trap 'exit 2' INT
3953
3954 tmpfile TMPASM .asm
3955 tmpfile TMPC   .c
3956 tmpfile TMPCPP .cpp
3957 tmpfile TMPE   $EXESUF
3958 tmpfile TMPH   .h
3959 tmpfile TMPM   .m
3960 tmpfile TMPO   .o
3961 tmpfile TMPS   .S
3962 tmpfile TMPSH  .sh
3963 tmpfile TMPV   .ver
3964
3965 unset -f mktemp
3966
3967 chmod +x $TMPE
3968
3969 # make sure we can execute files in $TMPDIR
3970 cat > $TMPSH 2>> $logfile <<EOF
3971 #! /bin/sh
3972 EOF
3973 chmod +x $TMPSH >> $logfile 2>&1
3974 if ! $TMPSH >> $logfile 2>&1; then
3975     cat <<EOF
3976 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3977 variable to another directory and make sure that it is not mounted noexec.
3978 EOF
3979     die "Sanity test failed."
3980 fi
3981
3982 armasm_flags(){
3983     for flag; do
3984         case $flag in
3985             # Filter out MSVC cl.exe options from cflags that shouldn't
3986             # be passed to gas-preprocessor
3987             -M[TD]*)                                            ;;
3988             *)                  echo $flag                      ;;
3989         esac
3990    done
3991 }
3992
3993 ccc_flags(){
3994     for flag; do
3995         case $flag in
3996             -std=c99)           echo -c99                       ;;
3997             -mcpu=*)            echo -arch ${flag#*=}           ;;
3998             -mieee)             echo -ieee                      ;;
3999             -O*|-fast)          echo $flag                      ;;
4000             -fno-math-errno)    echo -assume nomath_errno       ;;
4001             -g)                 echo -g3                        ;;
4002             -Wall)              echo -msg_enable level2         ;;
4003             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
4004             -Wl,*)              echo $flag                      ;;
4005             -f*|-W*)                                            ;;
4006             *)                  echo $flag                      ;;
4007         esac
4008    done
4009 }
4010
4011 cparser_flags(){
4012     for flag; do
4013         case $flag in
4014             -Wno-switch)             echo -Wno-switch-enum ;;
4015             -Wno-format-zero-length) ;;
4016             -Wdisabled-optimization) ;;
4017             -Wno-pointer-sign)       echo -Wno-other ;;
4018             *)                       echo $flag ;;
4019         esac
4020     done
4021 }
4022
4023 msvc_common_flags(){
4024     for flag; do
4025         case $flag in
4026             # In addition to specifying certain flags under the compiler
4027             # specific filters, they must be specified here as well or else the
4028             # generic catch all at the bottom will print the original flag.
4029             -Wall)                ;;
4030             -Wextra)              ;;
4031             -std=c99)             ;;
4032             # Common flags
4033             -fomit-frame-pointer) ;;
4034             -g)                   echo -Z7 ;;
4035             -fno-math-errno)      ;;
4036             -fno-common)          ;;
4037             -fno-signed-zeros)    ;;
4038             -fPIC)                ;;
4039             -mthumb)              ;;
4040             -march=*)             ;;
4041             -lz)                  echo zlib.lib ;;
4042             -lx264)               echo libx264.lib ;;
4043             -lstdc++)             ;;
4044             -l*)                  echo ${flag#-l}.lib ;;
4045             -LARGEADDRESSAWARE)   echo $flag ;;
4046             -L*)                  echo -libpath:${flag#-L} ;;
4047             *)                    echo $flag ;;
4048         esac
4049     done
4050 }
4051
4052 msvc_flags(){
4053     msvc_common_flags "$@"
4054     for flag; do
4055         case $flag in
4056             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4057                                        -wd4554 ;;
4058             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4059                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4060                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4061                                        -wd4307 \
4062                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4063         esac
4064     done
4065 }
4066
4067 icl_flags(){
4068     msvc_common_flags "$@"
4069     for flag; do
4070         case $flag in
4071             # Despite what Intel's documentation says -Wall, which is supported
4072             # on Windows, does enable remarks so disable them here.
4073             -Wall)                echo $flag -Qdiag-disable:remark ;;
4074             -std=c99)             echo -Qstd=c99 ;;
4075             -flto)                echo -ipo ;;
4076         esac
4077     done
4078 }
4079
4080 icc_flags(){
4081     for flag; do
4082         case $flag in
4083             -flto)                echo -ipo ;;
4084             *)                    echo $flag ;;
4085         esac
4086     done
4087 }
4088
4089 pgi_flags(){
4090     for flag; do
4091         case $flag in
4092             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4093             -fomit-frame-pointer) echo -Mnoframe ;;
4094             -g)                   echo -gopt ;;
4095             *)                    echo $flag ;;
4096         esac
4097     done
4098 }
4099
4100 suncc_flags(){
4101     for flag; do
4102         case $flag in
4103             -march=*|-mcpu=*)
4104                 case "${flag#*=}" in
4105                     native)                   echo -xtarget=native       ;;
4106                     v9|niagara)               echo -xarch=sparc          ;;
4107                     ultrasparc)               echo -xarch=sparcvis       ;;
4108                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4109                     i586|pentium)             echo -xchip=pentium        ;;
4110                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4111                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4112                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4113                     pentium4*)          echo -xtarget=pentium4           ;;
4114                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4115                     *-sse3)             echo -xarch=sse3                 ;;
4116                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4117                     bonnell)                   echo -xarch=ssse3         ;;
4118                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4119                     westmere)                  echo -xtarget=westmere    ;;
4120                     silvermont)                echo -xarch=sse4_2        ;;
4121                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4122                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4123                                                echo -xarch=avx           ;;
4124                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4125                     btver1)                    echo -xarch=amdsse4a      ;;
4126                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4127                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4128                     k8|opteron|athlon64|athlon-fx)
4129                                                echo -xarch=sse2a         ;;
4130                     athlon*)                   echo -xarch=pentium_proa  ;;
4131                 esac
4132                 ;;
4133             -std=c99)             echo -xc99              ;;
4134             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4135             -fPIC)                echo -KPIC -xcode=pic32 ;;
4136             -W*,*)                echo $flag              ;;
4137             -f*-*|-W*|-mimpure-text)                      ;;
4138             -shared)              echo -G                 ;;
4139             *)                    echo $flag              ;;
4140         esac
4141     done
4142 }
4143
4144 tms470_flags(){
4145     for flag; do
4146         case $flag in
4147             -march=*|-mcpu=*)
4148                 case "${flag#*=}" in
4149                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4150                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4151                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4152                     armv6*|arm11*)          echo -mv=6   ;;
4153                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4154                                             echo -mv=5e  ;;
4155                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4156                 esac
4157                 ;;
4158             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4159             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4160             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4161             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4162             -msoft-float)   echo --float_support=vfplib       ;;
4163             -O[0-3]|-mf=*)  echo $flag                        ;;
4164             -g)             echo -g -mn                       ;;
4165             -pds=*)         echo $flag                        ;;
4166             -D*|-I*)        echo $flag                        ;;
4167             --gcc|--abi=*)  echo $flag                        ;;
4168             -me)            echo $flag                        ;;
4169         esac
4170     done
4171 }
4172
4173 probe_cc(){
4174     pfx=$1
4175     _cc=$2
4176     first=$3
4177
4178     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4179     unset _ld_o _ldflags _ld_lib _ld_path
4180     unset _depflags _DEPCMD _DEPFLAGS
4181     _flags_filter=echo
4182
4183     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4184         true # no-op to avoid reading stdin in following checks
4185     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4186         _type=llvm_gcc
4187         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4188         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4189         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4190         _cflags_speed='-O3'
4191         _cflags_size='-Os'
4192     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4193         _type=gcc
4194         gcc_version=$($_cc --version | head -n1)
4195         gcc_basever=$($_cc -dumpversion)
4196         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4197         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4198         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4199         case $gcc_basever in
4200             2) ;;
4201             2.*) ;;
4202             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4203         esac
4204         if [ "$first" = true ]; then
4205             case $gcc_basever in
4206                 4.2*)
4207                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4208             esac
4209         fi
4210         _cflags_speed='-O3'
4211         _cflags_size='-Os'
4212     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4213         _type=icc
4214         _ident=$($_cc --version | head -n1)
4215         _depflags='-MMD'
4216         _cflags_speed='-O3'
4217         _cflags_size='-Os'
4218         _cflags_noopt='-O1'
4219         _flags_filter=icc_flags
4220     elif $_cc -v 2>&1 | grep -q xlc; then
4221         _type=xlc
4222         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4223         _cflags_speed='-O5'
4224         _cflags_size='-O5 -qcompact'
4225     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4226         _type=ccc
4227         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4228         _DEPFLAGS='-M'
4229         _cflags_speed='-fast'
4230         _cflags_size='-O1'
4231         _flags_filter=ccc_flags
4232     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4233         test -d "$sysroot" || die "No valid sysroot specified."
4234         _type=armcc
4235         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4236         armcc_conf="$PWD/armcc.conf"
4237         $_cc --arm_linux_configure                 \
4238              --arm_linux_config_file="$armcc_conf" \
4239              --configure_sysroot="$sysroot"        \
4240              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4241              die "Error creating armcc configuration file."
4242         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4243         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4244         as_default="${cross_prefix}gcc"
4245         _depflags='-MMD'
4246         _cflags_speed='-O3'
4247         _cflags_size='-Os'
4248     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4249         _type=tms470
4250         _ident=$($_cc -version | head -n1 | tr -s ' ')
4251         _flags='--gcc --abi=eabi -me'
4252         _cc_e='-ppl -fe=$@'
4253         _cc_o='-fe=$@'
4254         _depflags='-ppa -ppd=$(@:.o=.d)'
4255         _cflags_speed='-O3 -mf=5'
4256         _cflags_size='-O3 -mf=2'
4257         _flags_filter=tms470_flags
4258     elif $_cc -v 2>&1 | grep -q clang; then
4259         _type=clang
4260         _ident=$($_cc --version 2>/dev/null | head -n1)
4261         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4262         _cflags_speed='-O3'
4263         _cflags_size='-Oz'
4264     elif $_cc -V 2>&1 | grep -q Sun; then
4265         _type=suncc
4266         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4267         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4268         _DEPFLAGS='-xM1 -xc99'
4269         _ldflags='-std=c99'
4270         _cflags_speed='-O5'
4271         _cflags_size='-O5 -xspace'
4272         _flags_filter=suncc_flags
4273     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4274         _type=pathscale
4275         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4276         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4277         _cflags_speed='-O2'
4278         _cflags_size='-Os'
4279         _flags_filter='filter_out -Wdisabled-optimization'
4280     elif $_cc -v 2>&1 | grep -q Open64; then
4281         _type=open64
4282         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4283         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4284         _cflags_speed='-O2'
4285         _cflags_size='-Os'
4286         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4287     elif $_cc -V 2>&1 | grep -q Portland; then
4288         _type=pgi
4289         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4290         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4291         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4292         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4293         _cflags_noopt="-O"
4294         _flags_filter=pgi_flags
4295     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4296         _type=armasm
4297         _ident=$($_cc | head -n1)
4298         # 4509: "This form of conditional instruction is deprecated"
4299         _flags="-nologo -ignore 4509"
4300         _flags_filter=armasm_flags
4301     elif $_cc 2>&1 | grep -q Intel; then
4302         _type=icl
4303         _ident=$($_cc 2>&1 | head -n1)
4304         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4305         # Not only is O3 broken on 13.x+ but it is slower on all previous
4306         # versions (tested) as well.
4307         _cflags_speed="-O2"
4308         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4309         if $_cc 2>&1 | grep -q Linker; then
4310             _ld_o='-out:$@'
4311         else
4312             _ld_o='-Fe$@'
4313         fi
4314         _cc_o='-Fo$@'
4315         _cc_e='-P'
4316         _flags_filter=icl_flags
4317         _ld_lib='lib%.a'
4318         _ld_path='-libpath:'
4319         # -Qdiag-error to make icl error when seeing certain unknown arguments
4320         _flags='-nologo -Qdiag-error:4044,10157'
4321         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4322         # with MSVC which enables it by default.
4323         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4324         disable stripping
4325     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4326         # lld can emulate multiple different linkers; in ms link.exe mode,
4327         # the -? parameter gives the help output which contains an identifyable
4328         # string, while it gives an error in other modes.
4329         _type=lld-link
4330         # The link.exe mode doesn't have a switch for getting the version,
4331         # but we can force it back to gnu mode and get the version from there.
4332         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4333         _ld_o='-out:$@'
4334         _flags_filter=msvc_flags
4335         _ld_lib='lib%.a'
4336         _ld_path='-libpath:'
4337     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4338         _type=msvc
4339         _ident=$($_cc 2>&1 | head -n1)
4340         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4341         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4342         _cflags_speed="-O2"
4343         _cflags_size="-O1"
4344         _cflags_noopt="-O1"
4345         if $_cc -nologo- 2>&1 | grep -q Linker; then
4346             _ld_o='-out:$@'
4347         else
4348             _ld_o='-Fe$@'
4349         fi
4350         _cc_o='-Fo$@'
4351         _cc_e='-P -Fi$@'
4352         _flags_filter=msvc_flags
4353         _ld_lib='lib%.a'
4354         _ld_path='-libpath:'
4355         _flags='-nologo'
4356         disable stripping
4357     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4358         _type=cparser
4359         _ident=$($_cc --version | head -n1)
4360         _depflags='-MMD'
4361         _cflags_speed='-O4'
4362         _cflags_size='-O2'
4363         _flags_filter=cparser_flags
4364     fi
4365
4366     eval ${pfx}_type=\$_type
4367     eval ${pfx}_ident=\$_ident
4368 }
4369
4370 set_ccvars(){
4371     eval ${1}_C=\${_cc_c-\${${1}_C}}
4372     eval ${1}_E=\${_cc_e-\${${1}_E}}
4373     eval ${1}_O=\${_cc_o-\${${1}_O}}
4374
4375     if [ -n "$_depflags" ]; then
4376         eval ${1}_DEPFLAGS=\$_depflags
4377     else
4378         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4379         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4380         eval DEP${1}FLAGS=\$_flags
4381     fi
4382 }
4383
4384 probe_cc cc "$cc" "true"
4385 cflags_filter=$_flags_filter
4386 cflags_speed=$_cflags_speed
4387 cflags_size=$_cflags_size
4388 cflags_noopt=$_cflags_noopt
4389 add_cflags $_flags $_cflags
4390 cc_ldflags=$_ldflags
4391 set_ccvars CC
4392 set_ccvars CXX
4393
4394 probe_cc hostcc "$host_cc"
4395 host_cflags_filter=$_flags_filter
4396 host_cflags_speed=$_cflags_speed
4397 add_host_cflags  $_flags $_cflags
4398 set_ccvars HOSTCC
4399
4400 test -n "$cc_type" && enable $cc_type ||
4401     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4402
4403 : ${as_default:=$cc}
4404 : ${objcc_default:=$cc}
4405 : ${dep_cc_default:=$cc}
4406 : ${ld_default:=$cc}
4407 : ${host_ld_default:=$host_cc}
4408 set_default ar as objcc dep_cc ld ln_s host_ld windres
4409
4410 probe_cc as "$as"
4411 asflags_filter=$_flags_filter
4412 add_asflags $_flags $_cflags
4413 set_ccvars AS
4414
4415 probe_cc objcc "$objcc"
4416 objcflags_filter=$_flags_filter
4417 add_objcflags $_flags $_cflags
4418 set_ccvars OBJC
4419
4420 probe_cc ld "$ld"
4421 ldflags_filter=$_flags_filter
4422 add_ldflags $_flags $_ldflags
4423 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4424 LD_O=${_ld_o-$LD_O}
4425 LD_LIB=${_ld_lib-$LD_LIB}
4426 LD_PATH=${_ld_path-$LD_PATH}
4427
4428 probe_cc hostld "$host_ld"
4429 host_ldflags_filter=$_flags_filter
4430 add_host_ldflags $_flags $_ldflags
4431 HOSTLD_O=${_ld_o-$HOSTLD_O}
4432
4433 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4434     probe_cc depcc "$dep_cc"
4435     CCDEP=${_DEPCMD:-$DEPCMD}
4436     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4437     DEPCCFLAGS=$_flags
4438 fi
4439
4440 if $ar 2>&1 | grep -q Microsoft; then
4441     arflags="-nologo"
4442     ar_o='-out:$@'
4443 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4444     arflags="rq"
4445     ar_o='$@'
4446 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4447     arflags='-Xany -r -c'
4448     ar_o='$@'
4449 elif $ar 2>&1 | grep -q "\[D\] "; then
4450     arflags="rcD"
4451     ar_o='$@'
4452 else
4453     arflags="rc"
4454     ar_o='$@'
4455 fi
4456
4457 add_cflags $extra_cflags
4458 add_cxxflags $extra_cxxflags
4459 add_objcflags $extra_objcflags
4460 add_asflags $extra_cflags
4461
4462 if test -n "$sysroot"; then
4463     case "$cc_type" in
4464         gcc|llvm_gcc|clang)
4465             add_cppflags --sysroot="$sysroot"
4466             add_ldflags --sysroot="$sysroot"
4467 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4468             add_cppflags -isysroot "$sysroot"
4469             add_ldflags -isysroot "$sysroot"
4470         ;;
4471         tms470)
4472             add_cppflags -I"$sysinclude"
4473             add_ldflags  --sysroot="$sysroot"
4474         ;;
4475     esac
4476 fi
4477
4478 if test "$cpu" = host; then
4479     enabled cross_compile &&
4480         die "--cpu=host makes no sense when cross-compiling."
4481
4482     case "$cc_type" in
4483         gcc|llvm_gcc)
4484             check_native(){
4485                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4486                 sed -n "/cc1.*$1=/{
4487                             s/.*$1=\\([^ ]*\\).*/\\1/
4488                             p
4489                             q
4490                         }" $TMPE
4491             }
4492             cpu=$(check_native -march || check_native -mcpu)
4493         ;;
4494         clang)
4495             check_native(){
4496                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4497                 sed -n "/cc1.*-target-cpu /{
4498                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4499                             p
4500                             q
4501                         }" $TMPE
4502             }
4503             cpu=$(check_native -march)
4504         ;;
4505     esac
4506
4507     test "${cpu:-host}" = host &&
4508         die "--cpu=host not supported with compiler $cc"
4509 fi
4510
4511 # Deal with common $arch aliases
4512 case "$arch" in
4513     aarch64|arm64)
4514         arch="aarch64"
4515     ;;
4516     arm*|iPad*|iPhone*)
4517         arch="arm"
4518     ;;
4519     mips*|IP*)
4520         case "$arch" in
4521         *el)
4522             add_cppflags -EL
4523             add_ldflags -EL
4524         ;;
4525         *eb)
4526             add_cppflags -EB
4527             add_ldflags -EB
4528         ;;
4529         esac
4530         arch="mips"
4531     ;;
4532     parisc*|hppa*)
4533         arch="parisc"
4534     ;;
4535     "Power Macintosh"|ppc*|powerpc*)
4536         arch="ppc"
4537     ;;
4538     s390|s390x)
4539         arch="s390"
4540     ;;
4541     sh4|sh)
4542         arch="sh4"
4543     ;;
4544     sun4*|sparc*)
4545         arch="sparc"
4546     ;;
4547     tilegx|tile-gx)
4548         arch="tilegx"
4549     ;;
4550     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4551         arch="x86"
4552     ;;
4553 esac
4554
4555 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4556 enable $arch
4557
4558 # Add processor-specific flags
4559 if enabled aarch64; then
4560
4561     case $cpu in
4562         armv*)
4563             cpuflags="-march=$cpu"
4564         ;;
4565         *)
4566             cpuflags="-mcpu=$cpu"
4567         ;;
4568     esac
4569
4570 elif enabled alpha; then
4571
4572     cpuflags="-mcpu=$cpu"
4573
4574 elif enabled arm; then
4575
4576     check_arm_arch() {
4577         check_cpp_condition stddef.h \
4578             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4579             $cpuflags
4580     }
4581
4582     probe_arm_arch() {
4583         if   check_arm_arch 4;        then echo armv4
4584         elif check_arm_arch 4T;       then echo armv4t
4585         elif check_arm_arch 5;        then echo armv5
4586         elif check_arm_arch 5E;       then echo armv5e
4587         elif check_arm_arch 5T;       then echo armv5t
4588         elif check_arm_arch 5TE;      then echo armv5te
4589         elif check_arm_arch 5TEJ;     then echo armv5te
4590         elif check_arm_arch 6;        then echo armv6
4591         elif check_arm_arch 6J;       then echo armv6j
4592         elif check_arm_arch 6K;       then echo armv6k
4593         elif check_arm_arch 6Z;       then echo armv6z
4594         elif check_arm_arch 6ZK;      then echo armv6zk
4595         elif check_arm_arch 6T2;      then echo armv6t2
4596         elif check_arm_arch 7;        then echo armv7
4597         elif check_arm_arch 7A  7_A;  then echo armv7-a
4598         elif check_arm_arch 7S;       then echo armv7-a
4599         elif check_arm_arch 7R  7_R;  then echo armv7-r
4600         elif check_arm_arch 7M  7_M;  then echo armv7-m
4601         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4602         elif check_arm_arch 8A  8_A;  then echo armv8-a
4603         fi
4604     }
4605
4606     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4607
4608     case $cpu in
4609         armv*)
4610             cpuflags="-march=$cpu"
4611             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4612         ;;
4613         *)
4614             cpuflags="-mcpu=$cpu"
4615             case $cpu in
4616                 cortex-a*)                               subarch=armv7a  ;;
4617                 cortex-r*)                               subarch=armv7r  ;;
4618                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4619                 arm11*)                                  subarch=armv6   ;;
4620                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4621                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4622                 *)                             subarch=$(probe_arm_arch) ;;
4623             esac
4624         ;;
4625     esac
4626
4627     case "$subarch" in
4628         armv5t*)    enable fast_clz                ;;
4629         armv[6-8]*)
4630             enable fast_clz
4631             disabled fast_unaligned || enable fast_unaligned
4632             ;;
4633     esac
4634
4635 elif enabled avr32; then
4636
4637     case $cpu in
4638         ap7[02]0[0-2])
4639             subarch="avr32_ap"
4640             cpuflags="-mpart=$cpu"
4641         ;;
4642         ap)
4643             subarch="avr32_ap"
4644             cpuflags="-march=$cpu"
4645         ;;
4646         uc3[ab]*)
4647             subarch="avr32_uc"
4648             cpuflags="-mcpu=$cpu"
4649         ;;
4650         uc)
4651             subarch="avr32_uc"
4652             cpuflags="-march=$cpu"
4653         ;;
4654     esac
4655
4656 elif enabled bfin; then
4657
4658     cpuflags="-mcpu=$cpu"
4659
4660 elif enabled mips; then
4661
4662     cpuflags="-march=$cpu"
4663
4664     if [ "$cpu" != "generic" ]; then
4665         disable mips32r2
4666         disable mips32r5
4667         disable mips64r2
4668         disable mips32r6
4669         disable mips64r6
4670         disable loongson2
4671         disable loongson3
4672
4673         case $cpu in
4674             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4675                 enable mips32r2
4676                 disable msa
4677             ;;
4678             p5600|i6400|p6600)
4679                 disable mipsdsp
4680                 disable mipsdspr2
4681             ;;
4682             loongson*)
4683                 enable loongson2
4684                 enable loongson3
4685                 enable local_aligned_8 local_aligned_16 local_aligned_32
4686                 enable simd_align_16
4687                 enable fast_64bit
4688                 enable fast_clz
4689                 enable fast_cmov
4690                 enable fast_unaligned
4691                 disable aligned_stack
4692                 disable mipsfpu
4693                 disable mipsdsp
4694                 disable mipsdspr2
4695                 case $cpu in
4696                     loongson3*)
4697                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4698                     ;;
4699                     loongson2e)
4700                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4701                     ;;
4702                     loongson2f)
4703                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4704                     ;;
4705                 esac
4706             ;;
4707             *)
4708                 # Unknown CPU. Disable everything.
4709                 warn "unknown CPU. Disabling all MIPS optimizations."
4710                 disable mipsfpu
4711                 disable mipsdsp
4712                 disable mipsdspr2
4713                 disable msa
4714                 disable mmi
4715             ;;
4716         esac
4717
4718         case $cpu in
4719             24kc)
4720                 disable mipsfpu
4721                 disable mipsdsp
4722                 disable mipsdspr2
4723             ;;
4724             24kf*)
4725                 disable mipsdsp
4726                 disable mipsdspr2
4727             ;;
4728             24kec|34kc|1004kc)
4729                 disable mipsfpu
4730                 disable mipsdspr2
4731             ;;
4732             24kef*|34kf*|1004kf*)
4733                 disable mipsdspr2
4734             ;;
4735             74kc)
4736                 disable mipsfpu
4737             ;;
4738             p5600)
4739                 enable mips32r5
4740                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4741             ;;
4742             i6400)
4743                 enable mips64r6
4744                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4745             ;;
4746             p6600)
4747                 enable mips64r6
4748                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4749             ;;
4750         esac
4751     else
4752         # We do not disable anything. Is up to the user to disable the unwanted features.
4753         warn 'generic cpu selected'
4754     fi
4755
4756 elif enabled ppc; then
4757
4758     disable ldbrx
4759
4760     case $(tolower $cpu) in
4761         601|ppc601|powerpc601)
4762             cpuflags="-mcpu=601"
4763             disable altivec
4764         ;;
4765         603*|ppc603*|powerpc603*)
4766             cpuflags="-mcpu=603"
4767             disable altivec
4768         ;;
4769         604*|ppc604*|powerpc604*)
4770             cpuflags="-mcpu=604"
4771             disable altivec
4772         ;;
4773         g3|75*|ppc75*|powerpc75*)
4774             cpuflags="-mcpu=750"
4775             disable altivec
4776         ;;
4777         g4|745*|ppc745*|powerpc745*)
4778             cpuflags="-mcpu=7450"
4779             disable vsx
4780         ;;
4781         74*|ppc74*|powerpc74*)
4782             cpuflags="-mcpu=7400"
4783             disable vsx
4784         ;;
4785         g5|970|ppc970|powerpc970)
4786             cpuflags="-mcpu=970"
4787             disable vsx
4788         ;;
4789         power[3-6]*)
4790             cpuflags="-mcpu=$cpu"
4791             disable vsx
4792         ;;
4793         power[7-8]*)
4794             cpuflags="-mcpu=$cpu"
4795         ;;
4796         cell)
4797             cpuflags="-mcpu=cell"
4798             enable ldbrx
4799             disable vsx
4800         ;;
4801         e500mc)
4802             cpuflags="-mcpu=e500mc"
4803             disable altivec
4804         ;;
4805         e500v2)
4806             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4807             disable altivec
4808             disable dcbzl
4809         ;;
4810         e500)
4811             cpuflags="-mcpu=8540 -mhard-float"
4812             disable altivec
4813             disable dcbzl
4814         ;;
4815     esac
4816
4817 elif enabled sparc; then
4818
4819     case $cpu in
4820         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4821             cpuflags="-mcpu=$cpu"
4822         ;;
4823         ultrasparc*|niagara[234])
4824             cpuflags="-mcpu=$cpu"
4825         ;;
4826     esac
4827
4828 elif enabled x86; then
4829
4830     case $cpu in
4831         i[345]86|pentium)
4832             cpuflags="-march=$cpu"
4833             disable i686
4834             disable mmx
4835         ;;
4836         # targets that do NOT support nopl and conditional mov (cmov)
4837         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4838             cpuflags="-march=$cpu"
4839             disable i686
4840         ;;
4841         # targets that do support nopl and conditional mov (cmov)
4842         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4843         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4844         |amdfam10|barcelona|b[dt]ver*|znver*)
4845             cpuflags="-march=$cpu"
4846             enable i686
4847             enable fast_cmov
4848         ;;
4849         # targets that do support conditional mov but on which it's slow
4850         pentium4|pentium4m|prescott|nocona)
4851             cpuflags="-march=$cpu"
4852             enable i686
4853             disable fast_cmov
4854         ;;
4855     esac
4856
4857 fi
4858
4859 if [ "$cpu" != generic ]; then
4860     add_cflags  $cpuflags
4861     add_asflags $cpuflags
4862     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4863 fi
4864
4865 # compiler sanity check
4866 check_exec <<EOF
4867 int main(void){ return 0; }
4868 EOF
4869 if test "$?" != 0; then
4870     echo "$cc is unable to create an executable file."
4871     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4872         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4873         echo "Only do this if you know what cross compiling means."
4874     fi
4875     die "C compiler test failed."
4876 fi
4877
4878 add_cppflags -D_ISOC99_SOURCE
4879 add_cxxflags -D__STDC_CONSTANT_MACROS
4880 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4881
4882 # some compilers silently accept -std=c11, so we also need to check that the
4883 # version macro is defined properly
4884 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4885     add_cflags -std=c11 ||
4886     check_cflags -std=c99
4887
4888 check_cppflags -D_FILE_OFFSET_BITS=64
4889 check_cppflags -D_LARGEFILE_SOURCE
4890
4891 add_host_cppflags -D_ISOC99_SOURCE
4892 check_host_cflags -std=c99
4893 check_host_cflags -Wall
4894 check_host_cflags $host_cflags_speed
4895
4896 check_64bit(){
4897     arch32=$1
4898     arch64=$2
4899     expr=$3
4900     check_code cc "" "int test[2*($expr) - 1]" &&
4901         subarch=$arch64 || subarch=$arch32
4902 }
4903
4904 case "$arch" in
4905     aarch64|alpha|ia64)
4906         spic=$shared
4907     ;;
4908     mips)
4909         check_64bit mips mips64 '_MIPS_SIM > 1'
4910         spic=$shared
4911     ;;
4912     parisc)
4913         check_64bit parisc parisc64 'sizeof(void *) > 4'
4914         spic=$shared
4915     ;;
4916     ppc)
4917         check_64bit ppc ppc64 'sizeof(void *) > 4'
4918         spic=$shared
4919     ;;
4920     s390)
4921         check_64bit s390 s390x 'sizeof(void *) > 4'
4922         spic=$shared
4923     ;;
4924     sparc)
4925         check_64bit sparc sparc64 'sizeof(void *) > 4'
4926         spic=$shared
4927     ;;
4928     x86)
4929         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4930         # Treat x32 as x64 for now. Note it also needs spic=$shared
4931         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4932             subarch=x86_64
4933         if test "$subarch" = "x86_64"; then
4934             spic=$shared
4935         fi
4936     ;;
4937     ppc)
4938         check_cc <<EOF && subarch="ppc64"
4939         int test[(int)sizeof(char*) - 7];
4940 EOF
4941     ;;
4942 esac
4943
4944 enable $subarch
4945 enabled spic && enable_weak pic
4946
4947 enabled x86_64 && objformat=elf64 || objformat="elf32"
4948
4949 # OS specific
4950 case $target_os in
4951     aix)
4952         SHFLAGS=-shared
4953         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4954         enabled shared && add_ldflags -Wl,-brtl
4955         ;;
4956     android)
4957         disable symver
4958         enable section_data_rel_ro
4959         SLIB_INSTALL_NAME='$(SLIBNAME)'
4960         SLIB_INSTALL_LINKS=
4961         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4962         ;;
4963     haiku)
4964         prefix_default="/boot/common"
4965         network_extralibs="-lnetwork"
4966         host_extralibs=
4967         ;;
4968     sunos)
4969         SHFLAGS='-shared -Wl,-h,$$(@F)'
4970         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4971         network_extralibs="-lsocket -lnsl"
4972         add_cppflags -D__EXTENSIONS__
4973         # When using suncc to build, the Solaris linker will mark
4974         # an executable with each instruction set encountered by
4975         # the Solaris assembler.  As our libraries contain their own
4976         # guards for processor-specific code, instead suppress
4977         # generation of the HWCAPS ELF section on Solaris x86 only.
4978         enabled_all suncc x86 &&
4979             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4980             add_ldflags -Wl,-M,mapfile
4981         nm_default='nm -P -g'
4982         version_script='-M'
4983         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4984         ;;
4985     netbsd)
4986         disable symver
4987         oss_indev_extralibs="-lossaudio"
4988         oss_outdev_extralibs="-lossaudio"
4989         enabled gcc || check_ldflags -Wl,-zmuldefs
4990         ;;
4991     openbsd|bitrig)
4992         disable symver
4993         SHFLAGS='-shared'
4994         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4995         SLIB_INSTALL_LINKS=
4996         oss_indev_extralibs="-lossaudio"
4997         oss_outdev_extralibs="-lossaudio"
4998         ;;
4999     dragonfly)
5000         disable symver
5001         ;;
5002     freebsd)
5003         ;;
5004     bsd/os)
5005         add_extralibs -lpoll -lgnugetopt
5006         strip="strip -d"
5007         ;;
5008     darwin)
5009         enabled ppc && add_asflags -force_cpusubtype_ALL
5010         install_name_dir_default='$(SHLIBDIR)'
5011         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5012         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5013         strip="${strip} -x"
5014         add_ldflags -Wl,-dynamic,-search_paths_first
5015         check_cflags -Werror=partial-availability
5016         SLIBSUF=".dylib"
5017         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5018         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5019         enabled x86_64 && objformat="macho64" || objformat="macho32"
5020         enabled_any pic shared x86_64 ||
5021             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5022         check_header dispatch/dispatch.h &&
5023             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5024         version_script='-exported_symbols_list'
5025         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5026         ;;
5027     msys*)
5028         die "Native MSYS builds are discouraged, please use the MINGW environment."
5029         ;;
5030     mingw32*|mingw64*)
5031         if test $target_os = "mingw32ce"; then
5032             disable network
5033         else
5034             target_os=mingw32
5035         fi
5036         LIBTARGET=i386
5037         if enabled x86_64; then
5038             LIBTARGET="i386:x86-64"
5039         elif enabled arm; then
5040             LIBTARGET=arm-wince
5041         fi
5042         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5043         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5044         shlibdir_default="$bindir_default"
5045         SLIBPREF=""
5046         SLIBSUF=".dll"
5047         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5048         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5049         dlltool="${cross_prefix}dlltool"
5050         if check_cmd lib.exe -list; then
5051             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5052             if enabled x86_64; then
5053                 LIBTARGET=x64
5054             fi
5055         elif check_cmd $dlltool --version; then
5056             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5057         fi
5058         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5059         SLIB_INSTALL_LINKS=
5060         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5061         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5062         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
5063         enabled x86_64 && objformat="win64" || objformat="win32"
5064         ranlib=:
5065         enable dos_paths
5066         check_ldflags -Wl,--nxcompat,--dynamicbase
5067         # Lets work around some stupidity in binutils.
5068         # ld will strip relocations from executables even though we need them
5069         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5070         # however ld then forgets what the entry point should be (oops) so we
5071         # have to manually (re)set it.
5072         if enabled x86_32; then
5073             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5074         elif enabled x86_64; then
5075             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5076             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5077             # Set image base >4GB for extra entropy with HEASLR
5078             add_ldexeflags -Wl,--image-base,0x140000000
5079             append SHFLAGS -Wl,--image-base,0x180000000
5080         fi
5081         ;;
5082     win32|win64)
5083         disable symver
5084         if enabled shared; then
5085             # Link to the import library instead of the normal static library
5086             # for shared libs.
5087             LD_LIB='%.lib'
5088             # Cannot build both shared and static libs with MSVC or icl.
5089             disable static
5090         fi
5091         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5092         shlibdir_default="$bindir_default"
5093         SLIBPREF=""
5094         SLIBSUF=".dll"
5095         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5096         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5097         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5098         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5099         SLIB_INSTALL_LINKS=
5100         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5101         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5102         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5103         enabled x86_64 && objformat="win64" || objformat="win32"
5104         ranlib=:
5105         enable dos_paths
5106         ;;
5107     cygwin*)
5108         target_os=cygwin
5109         shlibdir_default="$bindir_default"
5110         SLIBPREF="cyg"
5111         SLIBSUF=".dll"
5112         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5113         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5114         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5115         SLIB_INSTALL_LINKS=
5116         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5117         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5118         enabled x86_64 && objformat="win64" || objformat="win32"
5119         enable dos_paths
5120         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5121         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5122         ;;
5123     *-dos|freedos|opendos)
5124         network_extralibs="-lsocket"
5125         objformat="coff"
5126         enable dos_paths
5127         add_cppflags -U__STRICT_ANSI__
5128         ;;
5129     linux)
5130         enable section_data_rel_ro
5131         enabled_any arm aarch64 && enable_weak linux_perf
5132         ;;
5133     irix*)
5134         target_os=irix
5135         ranlib="echo ignoring ranlib"
5136         ;;
5137     os/2*)
5138         strip="lxlite -CS"
5139         striptype=""
5140         objformat="aout"
5141         add_cppflags -D_GNU_SOURCE
5142         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5143         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5144         LIBSUF="_s.a"
5145         SLIBPREF=""
5146         SLIBSUF=".dll"
5147         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5148         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5149         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5150             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5151             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5152             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5153             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5154         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5155             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5156         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5157         SLIB_INSTALL_LINKS=
5158         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5159         enable dos_paths
5160         enable_weak os2threads
5161         ;;
5162     gnu/kfreebsd)
5163         add_cppflags -D_BSD_SOURCE
5164         ;;
5165     gnu)
5166         ;;
5167     qnx)
5168         add_cppflags -D_QNX_SOURCE
5169         network_extralibs="-lsocket"
5170         ;;
5171     symbian)
5172         SLIBSUF=".dll"
5173         enable dos_paths
5174         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5175         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5176         add_ldflags -Wl,--target1-abs,--no-undefined \
5177                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5178                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5179         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5180                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5181                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5182         ;;
5183     osf1)
5184         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5185         ;;
5186     minix)
5187         ;;
5188     none)
5189         ;;
5190     *)
5191         die "Unknown OS '$target_os'."
5192         ;;
5193 esac
5194
5195 # test if creating links works
5196 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5197 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5198 mkdir "$link_dest"
5199 $ln_s "$link_dest" "$link_name"
5200 touch "$link_dest/test_file"
5201 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5202     # create link to source path
5203     [ -e src ] && rm src
5204     $ln_s "$source_path" src
5205     source_link=src
5206 else
5207     # creating directory links doesn't work
5208     # fall back to using the full source path
5209     source_link="$source_path"
5210 fi
5211 # cleanup
5212 rm -r "$link_dest"
5213 rm -r "$link_name"
5214
5215 # determine libc flavour
5216
5217 probe_libc(){
5218     pfx=$1
5219     pfx_no_=${pfx%_}
5220     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5221     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5222         eval ${pfx}libc_type=uclibc
5223         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5224     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5225         eval ${pfx}libc_type=glibc
5226         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5227     # MinGW headers can be installed on Cygwin, so check for newlib first.
5228     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5229         eval ${pfx}libc_type=newlib
5230         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5231     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5232     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5233         eval ${pfx}libc_type=mingw64
5234         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5235             add_compat msvcrt/snprintf.o
5236             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5237         fi
5238         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5239         eval test \$${pfx_no_}cc_type = "gcc" &&
5240             add_${pfx}cppflags -D__printf__=__gnu_printf__
5241     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5242          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5243         eval ${pfx}libc_type=mingw32
5244         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5245             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5246             die "ERROR: MinGW32 runtime version must be >= 3.15."
5247         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5248         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5249             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5250         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5251             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5252         eval test \$${pfx_no_}cc_type = "gcc" &&
5253             add_${pfx}cppflags -D__printf__=__gnu_printf__
5254     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5255         eval ${pfx}libc_type=msvcrt
5256         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5257             if [ "$pfx" = host_ ]; then
5258                 add_host_cppflags -Dsnprintf=_snprintf
5259             else
5260                 add_compat strtod.o strtod=avpriv_strtod
5261                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5262                                              _snprintf=avpriv_snprintf  \
5263                                              vsnprintf=avpriv_vsnprintf
5264             fi
5265         fi
5266         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5267         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5268         # 0x601 by default unless something else is set by the user.
5269         # This can easily lead to us detecting functions only present
5270         # in such new versions and producing binaries requiring windows 7.0.
5271         # Therefore explicitly set the default to XP unless the user has
5272         # set something else on the command line.
5273         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5274         # family. For these cases, configure is free to use any functions
5275         # found in the SDK headers by default. (Alternatively, we could force
5276         # _WIN32_WINNT to 0x0602 in that case.)
5277         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5278             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5279 #ifdef WINAPI_FAMILY
5280 #include <winapifamily.h>
5281 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5282 #error not desktop
5283 #endif
5284 #endif
5285 EOF
5286         if [ "$pfx" = "" ]; then
5287             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5288             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5289         fi
5290     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5291         eval ${pfx}libc_type=klibc
5292     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5293         eval ${pfx}libc_type=bionic
5294     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5295         eval ${pfx}libc_type=solaris
5296         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5297     fi
5298     check_${pfx}cc <<EOF
5299 #include <time.h>
5300 void *v = localtime_r;
5301 EOF
5302 test "$?" != 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
5303 #include <time.h>
5304 void *v = localtime_r;
5305 EOF
5306
5307 }
5308
5309 probe_libc
5310 test -n "$libc_type" && enable libc_$libc_type
5311 probe_libc host_
5312 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5313
5314 # hacks for compiler/libc/os combinations
5315
5316 case $libc_type in
5317     bionic)
5318         add_compat strtod.o strtod=avpriv_strtod
5319         ;;
5320     glibc)
5321         if enabled tms470; then
5322             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5323             add_cppflags -D__USER_LABEL_PREFIX__=
5324             add_cppflags -D__builtin_memset=memset
5325             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5326             add_cflags   -pds=48    # incompatible redefinition of macro
5327         elif enabled ccc; then
5328             add_ldflags -Wl,-z,now  # calls to libots crash without this
5329         fi
5330         ;;
5331 esac
5332
5333 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5334     add_cppflags '-I\$(SRC_PATH)/compat/float'
5335
5336 esc(){
5337     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5338 }
5339
5340 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5341
5342 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5343
5344 set_default libdir
5345 : ${shlibdir_default:="$libdir"}
5346 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5347
5348 set_default $PATHS_LIST
5349 set_default nm
5350
5351 # we need to build at least one lib type
5352 if ! enabled_any static shared; then
5353     cat <<EOF
5354 At least one library type must be built.
5355 Specify --enable-static to build the static libraries or --enable-shared to
5356 build the shared libraries as well. To only build the shared libraries specify
5357 --disable-static in addition to --enable-shared.
5358 EOF
5359     exit 1
5360 fi
5361
5362 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5363
5364 enable_weak_pic() {
5365     disabled pic && return
5366     enable pic
5367     add_cppflags -DPIC
5368     case "$target_os" in
5369     mingw*|cygwin*)
5370         ;;
5371     *)
5372         add_cflags -fPIC
5373         ;;
5374     esac
5375     add_asflags  -fPIC
5376 }
5377
5378 enabled pic && enable_weak_pic
5379
5380 check_cc <<EOF || die "Symbol mangling check failed."
5381 int ff_extern;
5382 EOF
5383 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5384 extern_prefix=${sym%%ff_extern*}
5385
5386 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5387
5388 _restrict=
5389 for restrict_keyword in restrict __restrict__ __restrict; do
5390     check_cc <<EOF && _restrict=$restrict_keyword && break
5391 void foo(char * $restrict_keyword p);
5392 EOF
5393 done
5394
5395 check_cc <<EOF && enable pragma_deprecated
5396 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5397 EOF
5398
5399 check_cc <<EOF && enable attribute_packed
5400 struct { int x; } __attribute__((packed)) x;
5401 EOF
5402
5403 check_cc <<EOF && enable attribute_may_alias
5404 union { int x; } __attribute__((may_alias)) x;
5405 EOF
5406
5407 check_cc <<EOF || die "endian test failed"
5408 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5409 EOF
5410 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5411
5412 check_cc <<EOF && enable const_nan
5413 #include <math.h>
5414 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5415 EOF
5416
5417 if ! enabled ppc64 || enabled bigendian; then
5418     disable vsx
5419 fi
5420
5421 check_gas() {
5422     log "check_gas using '$as' as AS"
5423     # :vararg is used on aarch64, arm and ppc altivec
5424     check_as <<EOF || return 1
5425 .macro m n, y:vararg=0
5426 \n: .int \y
5427 .endm
5428 m x
5429 EOF
5430     # .altmacro is only used in arm asm
5431     ! enabled arm || check_as <<EOF || return 1
5432 .altmacro
5433 EOF
5434     enable gnu_as
5435     return 0
5436 }
5437
5438 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5439     nogas=:
5440     enabled_any arm aarch64 && nogas=die
5441     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5442     as_noop=-v
5443
5444     case $as_type in
5445         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5446         gcc)  gaspp_as_type=gas ;;
5447         *)    gaspp_as_type=$as_type ;;
5448     esac
5449
5450     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5451
5452     test "${as#*gas-preprocessor.pl}" != "$as" ||
5453     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5454         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5455
5456     if ! check_gas ; then
5457         as=${gas:=$as}
5458         check_gas || \
5459             $nogas "GNU assembler not found, install/update gas-preprocessor"
5460     fi
5461
5462     check_as <<EOF && enable as_func
5463 .func test
5464 .endfunc
5465 EOF
5466 fi
5467
5468 check_inline_asm inline_asm_labels '"1:\n"'
5469
5470 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5471
5472 if enabled aarch64; then
5473     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5474     # internal assembler in clang 3.3 does not support this instruction
5475     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5476     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5477
5478     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5479
5480 elif enabled alpha; then
5481
5482     check_cflags -mieee
5483
5484 elif enabled arm; then
5485
5486     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5487
5488     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5489 float func(float a, float b){ return a+b; }
5490 EOF
5491
5492     enabled thumb && check_cflags -mthumb || check_cflags -marm
5493
5494     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5495         enable vfp_args
5496     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5497         enable vfp_args
5498     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5499         case "${cross_prefix:-$cc}" in
5500             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5501             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5502 __asm__ (".eabi_attribute 28, 1");
5503 int main(void) { return 0; }
5504 EOF
5505         esac
5506         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5507     fi
5508
5509     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5510     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5511     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5512     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5513     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5514     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5515     enabled setend  && check_insn setend  'setend be'
5516
5517     [ $target_os = linux ] || [ $target_os = android ] ||
5518         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5519             $ARCH_EXT_LIST_ARM
5520
5521     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5522
5523     check_as <<EOF && enable as_dn_directive
5524 ra .dn d0.i16
5525 .unreq ra
5526 EOF
5527     check_as <<EOF && enable as_fpu_directive
5528 .fpu neon
5529 EOF
5530
5531     # llvm's integrated assembler supports .object_arch from llvm 3.5
5532     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5533         check_as <<EOF && enable as_object_arch
5534 .object_arch armv4
5535 EOF
5536
5537     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5538
5539 elif enabled mips; then
5540
5541     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5542     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5543     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5544
5545     # Enable minimum ISA based on selected options
5546     if enabled mips64; then
5547         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5548         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5549         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5550     else
5551         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5552         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5553         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5554         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5555     fi
5556
5557     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5558     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5559     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5560     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5561     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5562
5563     if enabled bigendian && enabled msa; then
5564         disable msa
5565     fi
5566
5567 elif enabled parisc; then
5568
5569     if enabled gcc; then
5570         case $($cc -dumpversion) in
5571             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5572         esac
5573     fi
5574
5575 elif enabled ppc; then
5576
5577     enable local_aligned_8 local_aligned_16 local_aligned_32
5578
5579     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5580     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5581     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5582     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5583
5584     # AltiVec flags: The FSF version of GCC differs from the Apple version
5585     if enabled altivec; then
5586         check_cflags -maltivec -mabi=altivec &&
5587         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5588         check_cflags -faltivec
5589
5590         # check if our compiler supports Motorola AltiVec C API
5591         check_cc <<EOF || disable altivec
5592 $inc_altivec_h
5593 int main(void) {
5594     vector signed int v1 = (vector signed int) { 0 };
5595     vector signed int v2 = (vector signed int) { 1 };
5596     v1 = vec_add(v1, v2);
5597     return 0;
5598 }
5599 EOF
5600
5601         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5602     fi
5603
5604     if enabled vsx; then
5605         check_cflags -mvsx &&
5606         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5607     fi
5608
5609     if enabled power8; then
5610         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5611     fi
5612
5613 elif enabled x86; then
5614
5615     check_builtin rdtsc    intrin.h   "__rdtsc()"
5616     check_builtin mm_empty mmintrin.h "_mm_empty()"
5617
5618     enable local_aligned_8 local_aligned_16 local_aligned_32
5619
5620     # check whether EBP is available on x86
5621     # As 'i' is stored on the stack, this program will crash
5622     # if the base pointer is used to access it because the
5623     # base pointer is cleared in the inline assembly code.
5624     check_exec_crash <<EOF && enable ebp_available
5625 volatile int i=0;
5626 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5627 return i;
5628 EOF
5629
5630     # check whether EBX is available on x86
5631     check_inline_asm ebx_available '""::"b"(0)' &&
5632         check_inline_asm ebx_available '"":::"%ebx"'
5633
5634     # check whether xmm clobbers are supported
5635     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5636
5637     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5638         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5639
5640     # check whether binutils is new enough to compile SSSE3/MMXEXT
5641     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5642     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5643
5644     probe_x86asm(){
5645         x86asmexe_probe=$1
5646         if check_cmd $x86asmexe_probe -v; then
5647             x86asmexe=$x86asmexe_probe
5648             x86asm_type=nasm
5649             x86asm_debug="-g -F dwarf"
5650         elif check_cmd $x86asmexe_probe --version; then
5651             x86asmexe=$x86asmexe_probe
5652             x86asm_type=yasm
5653             x86asm_debug="-g dwarf2"
5654         fi
5655         check_x86asm "movbe ecx, [5]" && enable x86asm
5656     }
5657
5658     if ! disabled_any asm mmx x86asm; then
5659         disable x86asm
5660         for program in $x86asmexe nasm yasm; do
5661             probe_x86asm $program && break
5662         done
5663         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5664         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5665         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5666         X86ASMFLAGS="-f $objformat"
5667         enabled pic               && append X86ASMFLAGS "-DPIC"
5668         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5669         case "$objformat" in
5670             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5671         esac
5672
5673         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5674         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5675         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5676         check_x86asm "CPU amdnop" || disable cpunop
5677     fi
5678
5679     case "$cpu" in
5680         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5681             disable fast_clz
5682         ;;
5683     esac
5684
5685 fi
5686
5687 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5688
5689 check_ldflags -Wl,--as-needed
5690 check_ldflags -Wl,-z,noexecstack
5691
5692 if ! disabled network; then
5693     check_func getaddrinfo $network_extralibs
5694     check_func inet_aton $network_extralibs
5695
5696     check_type netdb.h "struct addrinfo"
5697     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5698     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5699     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5700     check_type poll.h "struct pollfd"
5701     check_type netinet/sctp.h "struct sctp_event_subscribe"
5702     check_struct "sys/socket.h" "struct msghdr" msg_flags
5703     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5704     check_type netinet/in.h "struct sockaddr_in6"
5705     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5706     check_type "sys/types.h sys/socket.h" socklen_t
5707
5708     # Prefer arpa/inet.h over winsock2
5709     if check_header arpa/inet.h ; then
5710         check_func closesocket
5711     elif check_header winsock2.h ; then
5712         check_func_headers winsock2.h closesocket -lws2 &&
5713             network_extralibs="-lws2" ||
5714         { check_func_headers winsock2.h closesocket -lws2_32 &&
5715             network_extralibs="-lws2_32"; } || disable winsock2_h network
5716         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5717
5718         check_type ws2tcpip.h socklen_t
5719         check_type ws2tcpip.h "struct addrinfo"
5720         check_type ws2tcpip.h "struct group_source_req"
5721         check_type ws2tcpip.h "struct ip_mreq_source"
5722         check_type ws2tcpip.h "struct ipv6_mreq"
5723         check_type winsock2.h "struct pollfd"
5724         check_struct winsock2.h "struct sockaddr" sa_len
5725         check_type ws2tcpip.h "struct sockaddr_in6"
5726         check_type ws2tcpip.h "struct sockaddr_storage"
5727     else
5728         disable network
5729     fi
5730 fi
5731
5732 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5733 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5734 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5735 check_builtin sarestart signal.h "SA_RESTART"
5736 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5737 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5738 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5739 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5740
5741 case "$custom_allocator" in
5742     jemalloc)
5743         # jemalloc by default does not use a prefix
5744         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5745     ;;
5746     tcmalloc)
5747         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5748         malloc_prefix=tc_
5749     ;;
5750 esac
5751
5752 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5753 check_func  ${malloc_prefix}memalign            && enable memalign
5754 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5755
5756 check_func  access
5757 check_func_headers stdlib.h arc4random
5758 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5759 check_func  fcntl
5760 check_func  fork
5761 check_func  gethrtime
5762 check_func  getopt
5763 check_func  getrusage
5764 check_func  gettimeofday
5765 check_func  isatty
5766 check_func  mach_absolute_time
5767 check_func  mkstemp
5768 check_func  mmap
5769 check_func  mprotect
5770 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5771 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5772 check_func  sched_getaffinity
5773 check_func  setrlimit
5774 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5775 check_func  strerror_r
5776 check_func  sysconf
5777 check_func  sysctl
5778 check_func  usleep
5779
5780 check_func_headers conio.h kbhit
5781 check_func_headers io.h setmode
5782 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5783 check_func_headers stdlib.h getenv
5784 check_func_headers sys/stat.h lstat
5785
5786 check_func_headers windows.h GetProcessAffinityMask
5787 check_func_headers windows.h GetProcessTimes
5788 check_func_headers windows.h GetSystemTimeAsFileTime
5789 check_func_headers windows.h LoadLibrary
5790 check_func_headers windows.h MapViewOfFile
5791 check_func_headers windows.h PeekNamedPipe
5792 check_func_headers windows.h SetConsoleTextAttribute
5793 check_func_headers windows.h SetConsoleCtrlHandler
5794 check_func_headers windows.h Sleep
5795 check_func_headers windows.h VirtualAlloc
5796 check_struct windows.h "CONDITION_VARIABLE" Ptr
5797 check_func_headers glob.h glob
5798 enabled xlib &&
5799     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5800
5801 check_header d3d11.h
5802 check_header direct.h
5803 check_header dirent.h
5804 check_header dlfcn.h
5805 check_header dxgidebug.h
5806 check_header dxva.h
5807 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5808 check_header io.h
5809 check_header libcrystalhd/libcrystalhd_if.h
5810 check_header mach/mach_time.h
5811 check_header malloc.h
5812 check_header net/udplite.h
5813 check_header poll.h
5814 check_header sys/mman.h
5815 check_header sys/param.h
5816 check_header sys/resource.h
5817 check_header sys/select.h
5818 check_header sys/time.h
5819 check_header sys/un.h
5820 check_header termios.h
5821 check_header unistd.h
5822 check_header valgrind/valgrind.h
5823 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5824 check_header windows.h
5825 check_header X11/extensions/XvMClib.h
5826 check_header asm/types.h
5827
5828 # it seems there are versions of clang in some distros that try to use the
5829 # gcc headers, which explodes for stdatomic
5830 # so we also check that atomics actually work here
5831 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5832
5833 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5834 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5835 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5836 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5837
5838 enabled appkit       && check_apple_framework AppKit
5839 enabled audiotoolbox && check_apple_framework AudioToolbox
5840 enabled avfoundation && check_apple_framework AVFoundation
5841 enabled coreimage    && check_apple_framework CoreImage
5842 enabled videotoolbox && check_apple_framework VideoToolbox
5843
5844 check_apple_framework CoreFoundation
5845 check_apple_framework CoreMedia
5846 check_apple_framework CoreVideo
5847
5848 enabled avfoundation && {
5849     disable coregraphics applicationservices
5850     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5851     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5852
5853 enabled videotoolbox && {
5854     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5855     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5856 }
5857
5858 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5859
5860 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5861 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5862 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5863 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5864 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5865
5866 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5867 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5868 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5869 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5870 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5871 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5872 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5873 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5874 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5875
5876 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5877
5878 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5879
5880 if ! disabled w32threads && ! enabled pthreads; then
5881     check_func_headers "windows.h process.h" _beginthreadex &&
5882         enable w32threads || disable w32threads
5883     if ! enabled w32threads && enabled winrt; then
5884         check_func_headers "windows.h" CreateThread &&
5885             enable w32threads || disable w32threads
5886     fi
5887 fi
5888
5889 # check for some common methods of building with pthread support
5890 # do this before the optional library checks as some of them require pthreads
5891 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5892     if check_lib pthreads pthread.h pthread_join   -pthread &&
5893        check_lib pthreads pthread.h pthread_create -pthread; then
5894         add_cflags -pthread
5895     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5896          check_lib pthreads pthread.h pthread_create -pthreads; then
5897         add_cflags -pthreads
5898     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5899          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5900         add_cflags -ldl -pthread
5901     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5902          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5903         :
5904     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5905          check_lib pthreads pthread.h pthread_create -lpthread; then
5906         :
5907     elif check_func pthread_join && check_func pthread_create; then
5908         enable pthreads
5909     fi
5910     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5911 fi
5912
5913
5914 if enabled pthreads; then
5915   check_func pthread_cancel $pthreads_extralibs
5916 fi
5917
5918 enabled pthreads &&
5919     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5920
5921 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5922 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5923 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5924
5925 # On some systems dynamic loading requires no extra linker flags
5926 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5927
5928 check_lib libm math.h sin -lm
5929
5930 atan2f_args=2
5931 copysign_args=2
5932 hypot_args=2
5933 ldexpf_args=2
5934 powf_args=2
5935
5936 for func in $MATH_FUNCS; do
5937     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5938 done
5939
5940 for func in $COMPLEX_FUNCS; do
5941     eval check_complexfunc $func \${${func}_args:-1}
5942 done
5943
5944 # these are off by default, so fail if requested and not available
5945 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5946 enabled cuvid             && { enabled cuda ||
5947                                die "ERROR: CUVID requires CUDA"; }
5948 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5949 enabled decklink          && { require_header DeckLinkAPI.h &&
5950                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5951 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5952 enabled frei0r            && require_header frei0r.h
5953 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5954 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5955 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5956 enabled ladspa            && require_header ladspa.h
5957 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5958 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5959 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5960 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5961 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5962                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5963                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5964 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5965 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5966 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5967 enabled libfdk_aac        && { use_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5968                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5969                                  warn "using libfdk without pkg-config"; } }
5970 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"
5971 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5972 enabled fontconfig        && enable libfontconfig
5973 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5974 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5975 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5976 enabled libgme            && { use_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5977                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5978 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5979                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5980                                done || die "ERROR: libgsm not found"; }
5981 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5982 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5983 # While it may appear that require is being used as a pkg-config
5984 # fallback for libmfx, it is actually being used to detect a different
5985 # installation route altogether.  If libmfx is installed via the Intel
5986 # Media SDK or Intel Media Server Studio, these don't come with
5987 # pkg-config support.  Instead, users should make sure that the build
5988 # can find the libraries and headers through other means.
5989 enabled libmfx            && { use_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5990                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5991 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5992 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5993 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5994 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5995                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5996                                die "ERROR: libnpp not found"; }
5997 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5998 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5999 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6000                                { use_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6001                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6002                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6003 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6004 enabled libopenjpeg       && { use_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6005                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6006 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6007 enabled libopus           && {
6008     enabled libopus_decoder && {
6009         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6010     }
6011     enabled libopus_encoder && {
6012         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6013     }
6014 }
6015 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6016 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6017 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6018 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6019 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6020 enabled libsmbclient      && { use_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6021                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6022 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6023 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6024 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6025 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
6026 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6027 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6028 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6029                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6030                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6031 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6032 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6033 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
6034 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6035 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6036                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6037
6038 enabled libvpx            && {
6039     enabled libvpx_vp8_decoder && {
6040         use_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6041             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
6042                 die "ERROR: libvpx decoder version must be >=0.9.1";
6043     }
6044     enabled libvpx_vp8_encoder && {
6045         use_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6046             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
6047                 die "ERROR: libvpx encoder version must be >=0.9.7";
6048     }
6049     enabled libvpx_vp9_decoder && {
6050         use_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6051             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
6052     }
6053     enabled libvpx_vp9_encoder && {
6054         use_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6055             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6056     }
6057     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6058         die "libvpx enabled but no supported decoders found"
6059     fi
6060 }
6061
6062 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6063 enabled libwebp           && {
6064     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6065     enabled libwebp_anim_encoder && use_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6066 enabled libx264           && { use_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6067                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6068                                  warn "using libx264 without pkg-config"; } } &&
6069                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6070                              { check_cpp_condition x264.h "X264_MPEG2" &&
6071                                enable libx262; }
6072 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6073                              require_cpp_condition x265.h "X265_BUILD >= 68"
6074 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6075 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6076 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
6077 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6078 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6079                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6080                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6081 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6082 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6083 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6084                                { ! enabled cross_compile &&
6085                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6086                                  add_ldflags -L/opt/vc/lib/ &&
6087                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6088                                die "ERROR: mmal not found" &&
6089                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6090 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6091                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6092                                die "ERROR: openal not found"; } &&
6093                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6094                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6095 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6096                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6097                                die "ERROR: opencl not found"; } &&
6098                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6099                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6100                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6101 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6102                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6103                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6104                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6105                                die "ERROR: opengl not found."
6106                              }
6107 enabled omx               && require_header OMX_Core.h
6108 enabled omx_rpi           && { check_header OMX_Core.h ||
6109                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6110                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6111 enabled openssl           && { use_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6112                                use_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6113                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6114                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6115                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6116                                die "ERROR: openssl not found"; }
6117 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
6118                                  die "ERROR : Rockchip MPP was not found."; } &&
6119                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
6120                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
6121                                { enabled libdrm ||
6122                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6123                              }
6124
6125 if enabled gcrypt; then
6126     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6127     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6128         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6129         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6130         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6131             die "ERROR: gcrypt not found"
6132         add_cflags $gcrypt_cflags
6133     else
6134         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6135     fi
6136 fi
6137
6138 if enabled sdl2; then
6139     SDL2_CONFIG="${cross_prefix}sdl2-config"
6140     if check_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6141         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6142             disable sdl2
6143     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6144         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6145         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6146         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6147         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6148         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6149             enable sdl2
6150     fi
6151     if test $target_os = "mingw32"; then
6152         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6153     fi
6154 fi
6155
6156 if enabled decklink; then
6157     case $target_os in
6158         mingw32*|mingw64*|win32|win64)
6159             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6160             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6161             ;;
6162     esac
6163 fi
6164
6165 enabled securetransport &&
6166     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6167     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6168         disable securetransport
6169
6170 enabled schannel &&
6171     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6172     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6173     schannel_extralibs="-lsecur32" ||
6174         disable schannel
6175
6176 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6177 enabled makeinfo \
6178     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6179     && enable makeinfo_html || disable makeinfo_html
6180 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6181 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6182 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6183 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6184
6185 # check V4L2 codecs available in the API
6186 check_header linux/fb.h
6187 check_header linux/videodev2.h
6188 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6189 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6190 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6191 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6192 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6193 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6194 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6195 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6196 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6197 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6198 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6199
6200 check_header sys/videoio.h
6201 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6202
6203 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6204 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6205 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6206 # w32api 3.12 had it defined wrong
6207 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6208
6209 check_type "dshow.h" IBaseFilter
6210
6211 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6212 { check_header dev/bktr/ioctl_meteor.h &&
6213   check_header dev/bktr/ioctl_bt848.h; } ||
6214 { check_header machine/ioctl_meteor.h &&
6215   check_header machine/ioctl_bt848.h; } ||
6216 { check_header dev/video/meteor/ioctl_meteor.h &&
6217   check_header dev/video/bktr/ioctl_bt848.h; } ||
6218 check_header dev/ic/bt8xx.h
6219
6220 if check_struct sys/soundcard.h audio_buf_info bytes; then
6221     enable_safe sys/soundcard.h
6222 else
6223     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6224     #include <sys/soundcard.h>
6225     audio_buf_info abc;
6226 EOF
6227 fi
6228 check_header soundcard.h
6229
6230 enabled alsa && use_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6231     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6232
6233 enabled libjack &&
6234     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6235
6236 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6237
6238 if enabled libcdio; then
6239     use_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6240     use_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6241     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6242     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6243     die "ERROR: No usable libcdio/cdparanoia found"
6244 fi
6245
6246 enabled libxcb && use_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6247     disable libxcb_shm libxcb_shape libxcb_xfixes
6248
6249 if enabled libxcb; then
6250     enabled libxcb_shm    && use_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6251     enabled libxcb_shape  && use_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6252     enabled libxcb_xfixes && use_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6253 fi
6254
6255 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6256
6257 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6258 # the desktop api partition
6259 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6260 #ifdef WINAPI_FAMILY
6261 #include <winapifamily.h>
6262 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6263 #error desktop, not uwp
6264 #else
6265 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6266 #endif
6267 #else
6268 #error no family set
6269 #endif
6270 EOF
6271
6272 enabled vaapi &&
6273     check_lib vaapi va/va.h vaInitialize -lva
6274
6275 enabled vaapi &&
6276     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6277     disable vaapi
6278
6279 enabled vaapi &&
6280     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6281
6282 enabled vaapi &&
6283     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6284
6285 enabled vaapi &&
6286     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6287     enable vaapi_1
6288
6289 enabled vdpau &&
6290     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6291     disable vdpau
6292
6293 enabled vdpau &&
6294     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6295
6296 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6297
6298 if enabled x86; then
6299     case $target_os in
6300         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6301             ;;
6302         *)
6303             disable cuda cuvid nvenc
6304             ;;
6305     esac
6306 else
6307     disable cuda cuvid nvenc
6308 fi
6309
6310 enabled nvenc &&
6311     check_cc -I$source_path <<EOF || disable nvenc
6312 #include "compat/nvenc/nvEncodeAPI.h"
6313 NV_ENCODE_API_FUNCTION_LIST flist;
6314 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6315 int main(void) { return 0; }
6316 EOF
6317
6318 # Funny iconv installations are not unusual, so check it after all flags have been set
6319 if enabled libc_iconv; then
6320     check_func_headers iconv.h iconv
6321 elif enabled iconv; then
6322     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6323 fi
6324
6325 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6326
6327 # add some useful compiler flags if supported
6328 check_cflags -Wdeclaration-after-statement
6329 check_cflags -Wall
6330 check_cflags -Wdisabled-optimization
6331 check_cflags -Wpointer-arith
6332 check_cflags -Wredundant-decls
6333 check_cflags -Wwrite-strings
6334 check_cflags -Wtype-limits
6335 check_cflags -Wundef
6336 check_cflags -Wmissing-prototypes
6337 check_cflags -Wno-pointer-to-int-cast
6338 check_cflags -Wstrict-prototypes
6339 check_cflags -Wempty-body
6340
6341 if enabled extra_warnings; then
6342     check_cflags -Wcast-qual
6343     check_cflags -Wextra
6344     check_cflags -Wpedantic
6345 fi
6346
6347 check_disable_warning(){
6348     warning_flag=-W${1#-Wno-}
6349     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6350 }
6351
6352 test_cflags -Werror=unused-command-line-argument &&
6353     append unknown_warning_flags "-Werror=unused-command-line-argument"
6354 test_cflags -Werror=unknown-warning-option &&
6355     append unknown_warning_flags "-Werror=unknown-warning-option"
6356
6357 check_disable_warning -Wno-parentheses
6358 check_disable_warning -Wno-switch
6359 check_disable_warning -Wno-format-zero-length
6360 check_disable_warning -Wno-pointer-sign
6361 check_disable_warning -Wno-unused-const-variable
6362 check_disable_warning -Wno-bool-operation
6363
6364 check_disable_warning_headers(){
6365     warning_flag=-W${1#-Wno-}
6366     test_cflags $warning_flag && add_cflags_headers $1
6367 }
6368
6369 check_disable_warning_headers -Wno-deprecated-declarations
6370 check_disable_warning_headers -Wno-unused-variable
6371
6372 check_cc <<EOF && enable blocks_extension
6373 void (^block)(void);
6374 EOF
6375
6376 # add some linker flags
6377 check_ldflags -Wl,--warn-common
6378 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6379 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6380 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6381 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6382
6383 # add some strip flags
6384 check_stripflags -x
6385
6386 enabled neon_clobber_test &&
6387     check_ldflags -Wl,--wrap,avcodec_open2              \
6388                   -Wl,--wrap,avcodec_decode_audio4      \
6389                   -Wl,--wrap,avcodec_decode_video2      \
6390                   -Wl,--wrap,avcodec_decode_subtitle2   \
6391                   -Wl,--wrap,avcodec_encode_audio2      \
6392                   -Wl,--wrap,avcodec_encode_video2      \
6393                   -Wl,--wrap,avcodec_encode_subtitle    \
6394                   -Wl,--wrap,avcodec_send_packet        \
6395                   -Wl,--wrap,avcodec_receive_packet     \
6396                   -Wl,--wrap,avcodec_send_frame         \
6397                   -Wl,--wrap,avcodec_receive_frame      \
6398                   -Wl,--wrap,swr_convert                \
6399                   -Wl,--wrap,avresample_convert ||
6400     disable neon_clobber_test
6401
6402 enabled xmm_clobber_test &&
6403     check_ldflags -Wl,--wrap,avcodec_open2              \
6404                   -Wl,--wrap,avcodec_decode_audio4      \
6405                   -Wl,--wrap,avcodec_decode_video2      \
6406                   -Wl,--wrap,avcodec_decode_subtitle2   \
6407                   -Wl,--wrap,avcodec_encode_audio2      \
6408                   -Wl,--wrap,avcodec_encode_video2      \
6409                   -Wl,--wrap,avcodec_encode_subtitle    \
6410                   -Wl,--wrap,avcodec_send_packet        \
6411                   -Wl,--wrap,avcodec_receive_packet     \
6412                   -Wl,--wrap,avcodec_send_frame         \
6413                   -Wl,--wrap,avcodec_receive_frame      \
6414                   -Wl,--wrap,swr_convert                \
6415                   -Wl,--wrap,avresample_convert         \
6416                   -Wl,--wrap,sws_scale ||
6417     disable xmm_clobber_test
6418
6419 check_ld "cc" <<EOF && enable proper_dce
6420 extern const int array[512];
6421 static inline int func(void) { return array[0]; }
6422 int main(void) { return 0; }
6423 EOF
6424
6425 if enabled proper_dce; then
6426     echo "X { local: *; };" > $TMPV
6427     if test_ldflags -Wl,${version_script},$TMPV; then
6428         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6429         check_cc <<EOF && enable symver_asm_label
6430 void ff_foo(void) __asm__ ("av_foo@VERSION");
6431 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6432 EOF
6433         check_cc <<EOF && enable symver_gnu_asm
6434 __asm__(".symver ff_foo,av_foo@VERSION");
6435 void ff_foo(void) {}
6436 EOF
6437     fi
6438 fi
6439
6440 if [ -z "$optflags" ]; then
6441     if enabled small; then
6442         optflags=$cflags_size
6443     elif enabled optimizations; then
6444         optflags=$cflags_speed
6445     else
6446         optflags=$cflags_noopt
6447     fi
6448 fi
6449
6450 if [ -z "$nvccflags" ]; then
6451     nvccflags=$nvccflags_default
6452 fi
6453
6454 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6455     nvccflags="$nvccflags -m64"
6456 else
6457     nvccflags="$nvccflags -m32"
6458 fi
6459
6460 check_optflags(){
6461     check_cflags "$@"
6462     enabled lto && check_ldflags "$@"
6463 }
6464
6465 check_optflags $optflags
6466 check_optflags -fno-math-errno
6467 check_optflags -fno-signed-zeros
6468
6469 if enabled lto; then
6470     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6471     check_cflags  -flto
6472     check_ldflags -flto $cpuflags
6473     disable inline_asm_direct_symbol_refs
6474 fi
6475
6476 enabled ftrapv && check_cflags -ftrapv
6477
6478 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6479 int x;
6480 EOF
6481
6482
6483 if enabled icc; then
6484     # Just warnings, no remarks
6485     check_cflags -w1
6486     # -wd: Disable following warnings
6487     # 144, 167, 556: -Wno-pointer-sign
6488     # 188: enumerated type mixed with another type
6489     # 1292: attribute "foo" ignored
6490     # 1419: external declaration in primary source file
6491     # 10006: ignoring unknown option -fno-signed-zeros
6492     # 10148: ignoring unknown option -Wno-parentheses
6493     # 10156: ignoring option '-W'; no argument required
6494     # 13200: No EMMS instruction before call to function
6495     # 13203: No EMMS instruction before return from function
6496     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6497     # 11030: Warning unknown option --as-needed
6498     # 10156: ignoring option '-export'; no argument required
6499     check_ldflags -wd10156,11030
6500     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6501     enable ebp_available
6502     # The test above does not test linking
6503     enabled lto && disable symver_asm_label
6504     if enabled x86_32; then
6505         icc_version=$($cc -dumpversion)
6506         test ${icc_version%%.*} -ge 11 &&
6507             check_cflags -falign-stack=maintain-16-byte ||
6508             disable aligned_stack
6509     fi
6510 elif enabled ccc; then
6511     # disable some annoying warnings
6512     add_cflags -msg_disable bitnotint
6513     add_cflags -msg_disable mixfuncvoid
6514     add_cflags -msg_disable nonstandcast
6515     add_cflags -msg_disable unsupieee
6516 elif enabled gcc; then
6517     check_optflags -fno-tree-vectorize
6518     check_cflags -Werror=format-security
6519     check_cflags -Werror=implicit-function-declaration
6520     check_cflags -Werror=missing-prototypes
6521     check_cflags -Werror=return-type
6522     check_cflags -Werror=vla
6523     check_cflags -Wformat
6524     check_cflags -fdiagnostics-color=auto
6525     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6526 elif enabled llvm_gcc; then
6527     check_cflags -mllvm -stack-alignment=16
6528 elif enabled clang; then
6529     check_cflags -mllvm -stack-alignment=16
6530     check_cflags -mstack-alignment=16
6531     check_cflags -Qunused-arguments
6532     check_cflags -Werror=implicit-function-declaration
6533     check_cflags -Werror=missing-prototypes
6534     check_cflags -Werror=return-type
6535 elif enabled cparser; then
6536     add_cflags -Wno-missing-variable-declarations
6537     add_cflags -Wno-empty-statement
6538 elif enabled armcc; then
6539     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6540     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6541     # 2523: use of inline assembly is deprecated
6542     add_cflags -W${armcc_opt},--diag_suppress=2523
6543     add_cflags -W${armcc_opt},--diag_suppress=1207
6544     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6545     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6546     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6547     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6548 elif enabled tms470; then
6549     add_cflags -pds=824 -pds=837
6550     disable inline_asm
6551 elif enabled pathscale; then
6552     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6553     disable inline_asm
6554 elif enabled_any msvc icl; then
6555     enabled x86_32 && disable aligned_stack
6556     enabled_all x86_32 debug && add_cflags -Oy-
6557     enabled debug && add_ldflags -debug
6558     enable pragma_deprecated
6559     if enabled icl; then
6560         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6561         # (correctly) on icl 13.x.
6562         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6563             add_cflags -Qansi-alias
6564         # Some inline asm is not compilable in debug
6565         if enabled debug; then
6566             disable ebp_available
6567             disable ebx_available
6568         fi
6569     fi
6570     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6571     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6572     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6573     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6574     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6575     # MSVC 2013 and newer can handle it fine.
6576     # If this declspec fails, force including stdlib.h before the restrict redefinition
6577     # happens in config.h.
6578     if [ $_restrict != restrict ]; then
6579         check_cc <<EOF || add_cflags -FIstdlib.h
6580 __declspec($_restrict) void* foo(int);
6581 EOF
6582     fi
6583     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6584     # Issue has been fixed in MSVC v19.00.24218.
6585     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6586         check_cflags -d2SSAOptimizer-
6587     # enable utf-8 source processing on VS2015 U2 and newer
6588     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6589         add_cflags -utf-8
6590 fi
6591
6592 for pfx in "" host_; do
6593     varname=${pfx%_}cc_type
6594     eval "type=\$$varname"
6595     if [ "$type" = "msvc" ]; then
6596         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6597 static inline int foo(int a) { return a; }
6598 EOF
6599     fi
6600 done
6601
6602 case $as_type in
6603     clang)
6604         add_asflags -Qunused-arguments
6605     ;;
6606 esac
6607
6608 case $ld_type in
6609     clang)
6610         check_ldflags -Qunused-arguments
6611     ;;
6612 esac
6613
6614 case $target_os in
6615     osf1)
6616         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6617     ;;
6618 esac
6619
6620 enable frame_thread_encoder
6621
6622 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6623
6624 check_deps $CONFIG_LIST       \
6625            $CONFIG_EXTRA      \
6626            $HAVE_LIST         \
6627            $ALL_COMPONENTS    \
6628
6629 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"
6630
6631
6632 if test $target_os = "haiku"; then
6633     disable memalign
6634     disable posix_memalign
6635 fi
6636
6637 flatten_extralibs(){
6638     unset nested_entries
6639     list_name=$1
6640     eval list=\$${1}
6641     for entry in $list; do
6642         entry_copy=$entry
6643         resolve entry_copy
6644         append nested_entries $(filter '*_extralibs' $entry_copy)
6645         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6646         eval $entry="\$flat_entries"
6647     done
6648     append $list_name "$nested_entries"
6649
6650     resolve nested_entries
6651     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6652         flatten_extralibs $list_name
6653     fi
6654 }
6655
6656 for linkunit in $LIBRARY_LIST; do
6657     unset current_extralibs
6658     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6659     for comp in ${components}; do
6660         enabled $comp || continue
6661         comp_extralibs="${comp}_extralibs"
6662         append current_extralibs $comp_extralibs
6663     done
6664     eval prepend ${linkunit}_extralibs $current_extralibs
6665 done
6666
6667 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6668     flatten_extralibs ${linkunit}_extralibs
6669     unique  ${linkunit}_extralibs
6670     resolve ${linkunit}_extralibs
6671     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
6672 done
6673
6674 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6675
6676 for thread in $THREADS_LIST; do
6677     if enabled $thread; then
6678         test -n "$thread_type" &&
6679             die "ERROR: Only one thread type must be selected." ||
6680             thread_type="$thread"
6681     fi
6682 done
6683
6684 if disabled stdatomic_h; then
6685     if enabled atomics_gcc; then
6686         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6687     elif enabled atomics_win32; then
6688         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6689     elif enabled atomics_suncc; then
6690         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6691     elif enabled pthreads; then
6692         add_compat atomics/pthread/stdatomic.o
6693         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6694     else
6695         enabled threads && die "Threading is enabled, but no atomics are available"
6696         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6697     fi
6698 fi
6699
6700 # Check if requested libraries were found.
6701 for lib in $AUTODETECT_LIBS; do
6702     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6703 done
6704
6705 enabled zlib && add_cppflags -DZLIB_CONST
6706
6707 # conditional library dependencies, in linking order
6708 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6709 enabled afir_filter         && prepend avfilter_deps "avcodec"
6710 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6711 enabled aresample_filter    && prepend avfilter_deps "swresample"
6712 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6713 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6714 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6715 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6716 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6717 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6718 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6719 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6720 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6721 enabled pan_filter          && prepend avfilter_deps "swresample"
6722 enabled pp_filter           && prepend avfilter_deps "postproc"
6723 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6724 enabled resample_filter && prepend avfilter_deps "avresample"
6725 enabled sab_filter          && prepend avfilter_deps "swscale"
6726 enabled scale_filter    && prepend avfilter_deps "swscale"
6727 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6728 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6729 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6730 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6731 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6732 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6733 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6734 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6735 enabled spp_filter          && prepend avfilter_deps "avcodec"
6736 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6737 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6738 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6739
6740 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6741
6742 #FIXME
6743 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6744
6745 enabled opus_decoder    && prepend avcodec_deps "swresample"
6746
6747 expand_deps(){
6748     lib_deps=${1}_deps
6749     eval "deps=\$$lib_deps"
6750     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6751     unique $lib_deps
6752 }
6753
6754 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6755 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6756
6757 map 'expand_deps $v' $LIBRARY_LIST
6758
6759 license="LGPL version 2.1 or later"
6760 if enabled nonfree; then
6761     license="nonfree and unredistributable"
6762 elif enabled gplv3; then
6763     license="GPL version 3 or later"
6764 elif enabled lgplv3; then
6765     license="LGPL version 3 or later"
6766 elif enabled gpl; then
6767     license="GPL version 2 or later"
6768 fi
6769
6770 if test "$quiet" != "yes"; then
6771
6772 echo "install prefix            $prefix"
6773 echo "source path               $source_path"
6774 echo "C compiler                $cc"
6775 echo "C library                 $libc_type"
6776 if test "$host_cc" != "$cc"; then
6777     echo "host C compiler           $host_cc"
6778     echo "host C library            $host_libc_type"
6779 fi
6780 echo "ARCH                      $arch ($cpu)"
6781 if test "$build_suffix" != ""; then
6782     echo "build suffix              $build_suffix"
6783 fi
6784 if test "$progs_suffix" != ""; then
6785     echo "progs suffix              $progs_suffix"
6786 fi
6787 if test "$extra_version" != ""; then
6788     echo "version string suffix     $extra_version"
6789 fi
6790 echo "big-endian                ${bigendian-no}"
6791 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6792 if enabled x86; then
6793     echo "standalone assembly       ${x86asm-no}"
6794     echo "x86 assembler             ${x86asmexe}"
6795     echo "MMX enabled               ${mmx-no}"
6796     echo "MMXEXT enabled            ${mmxext-no}"
6797     echo "3DNow! enabled            ${amd3dnow-no}"
6798     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6799     echo "SSE enabled               ${sse-no}"
6800     echo "SSSE3 enabled             ${ssse3-no}"
6801     echo "AESNI enabled             ${aesni-no}"
6802     echo "AVX enabled               ${avx-no}"
6803     echo "AVX2 enabled              ${avx2-no}"
6804     echo "XOP enabled               ${xop-no}"
6805     echo "FMA3 enabled              ${fma3-no}"
6806     echo "FMA4 enabled              ${fma4-no}"
6807     echo "i686 features enabled     ${i686-no}"
6808     echo "CMOV is fast              ${fast_cmov-no}"
6809     echo "EBX available             ${ebx_available-no}"
6810     echo "EBP available             ${ebp_available-no}"
6811 fi
6812 if enabled aarch64; then
6813     echo "NEON enabled              ${neon-no}"
6814     echo "VFP enabled               ${vfp-no}"
6815 fi
6816 if enabled arm; then
6817     echo "ARMv5TE enabled           ${armv5te-no}"
6818     echo "ARMv6 enabled             ${armv6-no}"
6819     echo "ARMv6T2 enabled           ${armv6t2-no}"
6820     echo "VFP enabled               ${vfp-no}"
6821     echo "NEON enabled              ${neon-no}"
6822     echo "THUMB enabled             ${thumb-no}"
6823 fi
6824 if enabled mips; then
6825     echo "MIPS FPU enabled          ${mipsfpu-no}"
6826     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6827     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6828     echo "MIPS MSA enabled          ${msa-no}"
6829     echo "LOONGSON MMI enabled      ${mmi-no}"
6830 fi
6831 if enabled ppc; then
6832     echo "AltiVec enabled           ${altivec-no}"
6833     echo "VSX enabled               ${vsx-no}"
6834     echo "POWER8 enabled            ${power8-no}"
6835     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6836     echo "dcbzl available           ${dcbzl-no}"
6837 fi
6838 echo "debug symbols             ${debug-no}"
6839 echo "strip symbols             ${stripping-no}"
6840 echo "optimize for size         ${small-no}"
6841 echo "optimizations             ${optimizations-no}"
6842 echo "static                    ${static-no}"
6843 echo "shared                    ${shared-no}"
6844 echo "postprocessing support    ${postproc-no}"
6845 echo "network support           ${network-no}"
6846 echo "threading support         ${thread_type-no}"
6847 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6848 echo "texi2html enabled         ${texi2html-no}"
6849 echo "perl enabled              ${perl-no}"
6850 echo "pod2man enabled           ${pod2man-no}"
6851 echo "makeinfo enabled          ${makeinfo-no}"
6852 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6853 test -n "$random_seed" &&
6854     echo "random seed               ${random_seed}"
6855 echo
6856
6857 echo "External libraries:"
6858 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6859 echo
6860
6861 echo "External libraries providing hardware acceleration:"
6862 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6863 echo
6864
6865 echo "Libraries:"
6866 print_enabled '' $LIBRARY_LIST | print_in_columns
6867 echo
6868
6869 echo "Programs:"
6870 print_enabled '' $PROGRAM_LIST | print_in_columns
6871 echo
6872
6873 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6874     echo "Enabled ${type}s:"
6875     eval list=\$$(toupper $type)_LIST
6876     print_enabled '_*' $list | print_in_columns
6877     echo
6878 done
6879
6880 if test -n "$ignore_tests"; then
6881     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6882     echo "Ignored FATE tests:"
6883     echo $ignore_tests | print_in_columns
6884     echo
6885 fi
6886
6887 echo "License: $license"
6888
6889 echo "Creating configuration files ..."
6890
6891 fi # test "$quiet" != "yes"
6892
6893 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6894
6895 enabled stripping || strip="echo skipping strip"
6896 enabled stripping || striptype=""
6897
6898 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6899
6900 cat > ffbuild/config.mak <<EOF
6901 # Automatically generated by configure - do not modify!
6902 ifndef FFMPEG_CONFIG_MAK
6903 FFMPEG_CONFIG_MAK=1
6904 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6905 prefix=$prefix
6906 LIBDIR=\$(DESTDIR)$libdir
6907 SHLIBDIR=\$(DESTDIR)$shlibdir
6908 INCDIR=\$(DESTDIR)$incdir
6909 BINDIR=\$(DESTDIR)$bindir
6910 DATADIR=\$(DESTDIR)$datadir
6911 DOCDIR=\$(DESTDIR)$docdir
6912 MANDIR=\$(DESTDIR)$mandir
6913 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6914 INSTALL_NAME_DIR=$install_name_dir
6915 SRC_PATH=$source_path
6916 SRC_LINK=$source_link
6917 ifndef MAIN_MAKEFILE
6918 SRC_PATH:=\$(SRC_PATH:.%=..%)
6919 endif
6920 CC_IDENT=$cc_ident
6921 ARCH=$arch
6922 INTRINSICS=$intrinsics
6923 CC=$cc
6924 CXX=$cxx
6925 AS=$as
6926 OBJCC=$objcc
6927 LD=$ld
6928 DEPCC=$dep_cc
6929 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6930 DEPAS=$as
6931 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6932 X86ASM=$x86asmexe
6933 DEPX86ASM=$x86asmexe
6934 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6935 AR=$ar
6936 ARFLAGS=$arflags
6937 AR_O=$ar_o
6938 RANLIB=$ranlib
6939 STRIP=$strip
6940 STRIPTYPE=$striptype
6941 NVCC=$nvcc
6942 CP=cp -p
6943 LN_S=$ln_s
6944 CPPFLAGS=$CPPFLAGS
6945 CFLAGS=$CFLAGS
6946 CXXFLAGS=$CXXFLAGS
6947 OBJCFLAGS=$OBJCFLAGS
6948 ASFLAGS=$ASFLAGS
6949 NVCCFLAGS=$nvccflags
6950 AS_C=$AS_C
6951 AS_O=$AS_O
6952 OBJCC_C=$OBJCC_C
6953 OBJCC_E=$OBJCC_E
6954 OBJCC_O=$OBJCC_O
6955 CC_C=$CC_C
6956 CC_E=$CC_E
6957 CC_O=$CC_O
6958 CXX_C=$CXX_C
6959 CXX_O=$CXX_O
6960 NVCC_C=$NVCC_C
6961 NVCC_O=$NVCC_O
6962 LD_O=$LD_O
6963 X86ASM_O=$X86ASM_O
6964 LD_LIB=$LD_LIB
6965 LD_PATH=$LD_PATH
6966 DLLTOOL=$dlltool
6967 WINDRES=$windres
6968 DEPWINDRES=$dep_cc
6969 DOXYGEN=$doxygen
6970 LDFLAGS=$LDFLAGS
6971 LDEXEFLAGS=$LDEXEFLAGS
6972 LDLIBFLAGS=$LDLIBFLAGS
6973 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6974 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6975 X86ASMFLAGS=$X86ASMFLAGS
6976 BUILDSUF=$build_suffix
6977 PROGSSUF=$progs_suffix
6978 FULLNAME=$FULLNAME
6979 LIBPREF=$LIBPREF
6980 LIBSUF=$LIBSUF
6981 LIBNAME=$LIBNAME
6982 SLIBPREF=$SLIBPREF
6983 SLIBSUF=$SLIBSUF
6984 EXESUF=$EXESUF
6985 EXTRA_VERSION=$extra_version
6986 CCDEP=$CCDEP
6987 CXXDEP=$CXXDEP
6988 CCDEP_FLAGS=$CCDEP_FLAGS
6989 ASDEP=$ASDEP
6990 ASDEP_FLAGS=$ASDEP_FLAGS
6991 X86ASMDEP=$X86ASMDEP
6992 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6993 CC_DEPFLAGS=$CC_DEPFLAGS
6994 AS_DEPFLAGS=$AS_DEPFLAGS
6995 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6996 HOSTCC=$host_cc
6997 HOSTLD=$host_ld
6998 HOSTCFLAGS=$host_cflags
6999 HOSTCPPFLAGS=$host_cppflags
7000 HOSTEXESUF=$HOSTEXESUF
7001 HOSTLDFLAGS=$host_ldflags
7002 HOSTEXTRALIBS=$host_extralibs
7003 DEPHOSTCC=$host_cc
7004 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7005 HOSTCCDEP=$HOSTCCDEP
7006 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7007 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7008 HOSTCC_C=$HOSTCC_C
7009 HOSTCC_O=$HOSTCC_O
7010 HOSTLD_O=$HOSTLD_O
7011 TARGET_EXEC=$target_exec $target_exec_args
7012 TARGET_PATH=$target_path
7013 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7014 CFLAGS-ffplay=${sdl2_cflags}
7015 CFLAGS_HEADERS=$CFLAGS_HEADERS
7016 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7017 EXTRALIBS=$extralibs
7018 COMPAT_OBJS=$compat_objs
7019 INSTALL=$install
7020 LIBTARGET=${LIBTARGET}
7021 SLIBNAME=${SLIBNAME}
7022 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7023 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7024 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7025 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7026 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7027 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7028 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7029 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7030 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7031 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7032 NOREDZONE_FLAGS=$noredzone_flags
7033 LIBFUZZER_PATH=$libfuzzer_path
7034 IGNORE_TESTS=$ignore_tests
7035 EOF
7036
7037 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7038
7039 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7040     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7041 done
7042
7043 cat > $TMPH <<EOF
7044 /* Automatically generated by configure - do not modify! */
7045 #ifndef FFMPEG_CONFIG_H
7046 #define FFMPEG_CONFIG_H
7047 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7048 #define FFMPEG_LICENSE "$(c_escape $license)"
7049 #define CONFIG_THIS_YEAR 2017
7050 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7051 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7052 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7053 #define av_restrict $_restrict
7054 #define EXTERN_PREFIX "${extern_prefix}"
7055 #define EXTERN_ASM ${extern_prefix}
7056 #define BUILDSUF "$build_suffix"
7057 #define SLIBSUF "$SLIBSUF"
7058 #define HAVE_MMX2 HAVE_MMXEXT
7059 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7060 EOF
7061
7062 test -n "$assert_level" &&
7063     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7064
7065 test -n "$malloc_prefix" &&
7066     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7067
7068 if enabled x86asm; then
7069     append config_files $TMPASM
7070     printf '' >$TMPASM
7071 fi
7072
7073 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7074
7075
7076 mkdir -p doc
7077 mkdir -p tests
7078 mkdir -p tests/api
7079 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7080
7081 print_config ARCH_   "$config_files" $ARCH_LIST
7082 print_config HAVE_   "$config_files" $HAVE_LIST
7083 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7084                                      $CONFIG_EXTRA      \
7085                                      $ALL_COMPONENTS    \
7086
7087 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7088 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7089
7090 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7091 cp_if_changed $TMPH config.h
7092 touch ffbuild/.config
7093
7094 enabled x86asm && cp_if_changed $TMPASM config.asm
7095
7096 cat > $TMPH <<EOF
7097 /* Generated by ffconf */
7098 #ifndef AVUTIL_AVCONFIG_H
7099 #define AVUTIL_AVCONFIG_H
7100 EOF
7101
7102 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7103
7104 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7105
7106 cp_if_changed $TMPH libavutil/avconfig.h
7107
7108 # generate the lists of enabled components
7109 print_enabled_components(){
7110     file=$1
7111     struct_name=$2
7112     name=$3
7113     shift 3
7114     echo "static const $struct_name * const $name[] = {" > $TMPH
7115     for c in $*; do
7116         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7117     done
7118     echo "    NULL };" >> $TMPH
7119     cp_if_changed $TMPH $file
7120 }
7121
7122 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7123 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7124
7125 if test -n "$WARNINGS"; then
7126     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7127     enabled fatal_warnings && exit 1
7128 fi
7129
7130 # Settings for pkg-config files
7131
7132 cat > ffbuild/config.sh <<EOF
7133 # Automatically generated by configure - do not modify!
7134 shared=$shared
7135 build_suffix=$build_suffix
7136 prefix=$prefix
7137 libdir=$libdir
7138 incdir=$incdir
7139 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7140 source_path=${source_path}
7141 LIBPREF=${LIBPREF}
7142 LIBSUF=${LIBSUF}
7143 extralibs_avutil="$avutil_extralibs"
7144 extralibs_avcodec="$avcodec_extralibs"
7145 extralibs_avformat="$avformat_extralibs"
7146 extralibs_avdevice="$avdevice_extralibs"
7147 extralibs_avfilter="$avfilter_extralibs"
7148 extralibs_avresample="$avresample_extralibs"
7149 extralibs_postproc="$postproc_extralibs"
7150 extralibs_swscale="$swscale_extralibs"
7151 extralibs_swresample="$swresample_extralibs"
7152 EOF
7153
7154 for lib in $LIBRARY_LIST; do
7155     lib_deps="$(eval echo \$${lib}_deps)"
7156     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7157 done