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     jack_port_get_latency_range
2027     kbhit
2028     LoadLibrary
2029     localtime_r
2030     lstat
2031     lzo1x_999_compress
2032     mach_absolute_time
2033     MapViewOfFile
2034     memalign
2035     mkstemp
2036     mmap
2037     mprotect
2038     nanosleep
2039     PeekNamedPipe
2040     posix_memalign
2041     pthread_cancel
2042     sched_getaffinity
2043     SetConsoleTextAttribute
2044     SetConsoleCtrlHandler
2045     setmode
2046     setrlimit
2047     Sleep
2048     strerror_r
2049     sysconf
2050     sysctl
2051     usleep
2052     UTGetOSTypeFromString
2053     VirtualAlloc
2054     wglGetProcAddress
2055 "
2056
2057 TOOLCHAIN_FEATURES="
2058     as_dn_directive
2059     as_fpu_directive
2060     as_func
2061     as_object_arch
2062     asm_mod_q
2063     attribute_may_alias
2064     attribute_packed
2065     blocks_extension
2066     ebp_available
2067     ebx_available
2068     gnu_as
2069     gnu_windres
2070     ibm_asm
2071     inline_asm_direct_symbol_refs
2072     inline_asm_labels
2073     inline_asm_nonlocal_labels
2074     pragma_deprecated
2075     rsync_contimeout
2076     symver_asm_label
2077     symver_gnu_asm
2078     vfp_args
2079     xform_asm
2080     xmm_clobbers
2081 "
2082
2083 TYPES_LIST="
2084     CONDITION_VARIABLE_Ptr
2085     kCMVideoCodecType_HEVC
2086     socklen_t
2087     struct_addrinfo
2088     struct_group_source_req
2089     struct_ip_mreq_source
2090     struct_ipv6_mreq
2091     struct_msghdr_msg_flags
2092     struct_pollfd
2093     struct_rusage_ru_maxrss
2094     struct_sctp_event_subscribe
2095     struct_sockaddr_in6
2096     struct_sockaddr_sa_len
2097     struct_sockaddr_storage
2098     struct_stat_st_mtim_tv_nsec
2099     struct_v4l2_frmivalenum_discrete
2100 "
2101
2102 HAVE_LIST="
2103     $ARCH_EXT_LIST
2104     $(add_suffix _external $ARCH_EXT_LIST)
2105     $(add_suffix _inline   $ARCH_EXT_LIST)
2106     $ARCH_FEATURES
2107     $ATOMICS_LIST
2108     $BUILTIN_LIST
2109     $COMPLEX_FUNCS
2110     $HAVE_LIST_CMDLINE
2111     $HAVE_LIST_PUB
2112     $HEADERS_LIST
2113     $INTRINSICS_LIST
2114     $MATH_FUNCS
2115     $SYSTEM_FUNCS
2116     $THREADS_LIST
2117     $TOOLCHAIN_FEATURES
2118     $TYPES_LIST
2119     atomics_native
2120     dos_paths
2121     libc_msvcrt
2122     makeinfo
2123     makeinfo_html
2124     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2125     perl
2126     pod2man
2127     section_data_rel_ro
2128     texi2html
2129     threads
2130     uwp
2131     vaapi_drm
2132     vaapi_x11
2133     vdpau_x11
2134     winrt
2135 "
2136
2137 # options emitted with CONFIG_ prefix but not available on the command line
2138 CONFIG_EXTRA="
2139     aandcttables
2140     ac3dsp
2141     audio_frame_queue
2142     audiodsp
2143     blockdsp
2144     bswapdsp
2145     cabac
2146     cbs
2147     cbs_h264
2148     cbs_h265
2149     cbs_mpeg2
2150     dirac_parse
2151     dvprofile
2152     exif
2153     faandct
2154     faanidct
2155     fdctdsp
2156     flacdsp
2157     fmtconvert
2158     frame_thread_encoder
2159     g722dsp
2160     golomb
2161     gplv3
2162     h263dsp
2163     h264chroma
2164     h264dsp
2165     h264parse
2166     h264pred
2167     h264qpel
2168     hevcparse
2169     hpeldsp
2170     huffman
2171     huffyuvdsp
2172     huffyuvencdsp
2173     idctdsp
2174     iirfilter
2175     mdct15
2176     intrax8
2177     iso_media
2178     ividsp
2179     jpegtables
2180     lgplv3
2181     libx262
2182     llauddsp
2183     llviddsp
2184     llvidencdsp
2185     lpc
2186     lzf
2187     me_cmp
2188     mpeg_er
2189     mpegaudio
2190     mpegaudiodsp
2191     mpegaudioheader
2192     mpegvideo
2193     mpegvideoenc
2194     mss34dsp
2195     pixblockdsp
2196     qpeldsp
2197     qsv
2198     qsvdec
2199     qsvenc
2200     rangecoder
2201     riffdec
2202     riffenc
2203     rtpdec
2204     rtpenc_chain
2205     rv34dsp
2206     sinewin
2207     snappy
2208     srtp
2209     startcode
2210     texturedsp
2211     texturedspenc
2212     tpeldsp
2213     vaapi_1
2214     vaapi_encode
2215     vc1dsp
2216     videodsp
2217     vp3dsp
2218     vp56dsp
2219     vp8dsp
2220     wma_freqs
2221     wmv2dsp
2222 "
2223
2224 CMDLINE_SELECT="
2225     $ARCH_EXT_LIST
2226     $CONFIG_LIST
2227     $HAVE_LIST_CMDLINE
2228     $THREADS_LIST
2229     asm
2230     cross_compile
2231     debug
2232     extra_warnings
2233     logging
2234     lto
2235     optimizations
2236     rpath
2237     stripping
2238 "
2239
2240 PATHS_LIST="
2241     bindir
2242     datadir
2243     docdir
2244     incdir
2245     libdir
2246     mandir
2247     pkgconfigdir
2248     prefix
2249     shlibdir
2250     install_name_dir
2251 "
2252
2253 CMDLINE_SET="
2254     $PATHS_LIST
2255     ar
2256     arch
2257     as
2258     assert_level
2259     build_suffix
2260     cc
2261     objcc
2262     cpu
2263     cross_prefix
2264     custom_allocator
2265     cxx
2266     dep_cc
2267     doxygen
2268     env
2269     extra_version
2270     gas
2271     host_cc
2272     host_cflags
2273     host_extralibs
2274     host_ld
2275     host_ldflags
2276     host_os
2277     ignore_tests
2278     install
2279     ld
2280     ln_s
2281     logfile
2282     malloc_prefix
2283     nm
2284     optflags
2285     nvccflags
2286     pkg_config
2287     pkg_config_flags
2288     progs_suffix
2289     random_seed
2290     ranlib
2291     samples
2292     strip
2293     sws_max_filter_size
2294     sysinclude
2295     sysroot
2296     target_exec
2297     target_os
2298     target_path
2299     target_samples
2300     tempprefix
2301     toolchain
2302     valgrind
2303     x86asmexe
2304 "
2305
2306 CMDLINE_APPEND="
2307     extra_cflags
2308     extra_cxxflags
2309     extra_objcflags
2310     host_cppflags
2311 "
2312
2313 # code dependency declarations
2314
2315 # architecture extensions
2316
2317 armv5te_deps="arm"
2318 armv6_deps="arm"
2319 armv6t2_deps="arm"
2320 armv8_deps="aarch64"
2321 neon_deps_any="aarch64 arm"
2322 intrinsics_neon_deps="neon"
2323 vfp_deps_any="aarch64 arm"
2324 vfpv3_deps="vfp"
2325 setend_deps="arm"
2326
2327 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2328
2329 loongson2_deps="mips"
2330 loongson3_deps="mips"
2331 mipsfpu_deps="mips"
2332 mipsdsp_deps="mips"
2333 mipsdspr2_deps="mips"
2334 mips32r2_deps="mips"
2335 mips32r5_deps="mips"
2336 mips32r6_deps="mips"
2337 mips64r2_deps="mips"
2338 mips64r6_deps="mips"
2339 msa_deps="mipsfpu"
2340 mmi_deps="mips"
2341
2342 altivec_deps="ppc"
2343 dcbzl_deps="ppc"
2344 ldbrx_deps="ppc"
2345 ppc4xx_deps="ppc"
2346 vsx_deps="altivec"
2347 power8_deps="vsx"
2348
2349 cpunop_deps="i686"
2350 x86_64_select="i686"
2351 x86_64_suggest="fast_cmov"
2352
2353 amd3dnow_deps="mmx"
2354 amd3dnowext_deps="amd3dnow"
2355 i686_deps="x86"
2356 mmx_deps="x86"
2357 mmxext_deps="mmx"
2358 sse_deps="mmxext"
2359 sse2_deps="sse"
2360 sse3_deps="sse2"
2361 ssse3_deps="sse3"
2362 sse4_deps="ssse3"
2363 sse42_deps="sse4"
2364 aesni_deps="sse42"
2365 avx_deps="sse42"
2366 xop_deps="avx"
2367 fma3_deps="avx"
2368 fma4_deps="avx"
2369 avx2_deps="avx"
2370
2371 mmx_external_deps="x86asm"
2372 mmx_inline_deps="inline_asm"
2373 mmx_suggest="mmx_external mmx_inline"
2374
2375 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2376     eval dep=\$${ext}_deps
2377     eval ${ext}_external_deps='"${dep}_external"'
2378     eval ${ext}_inline_deps='"${dep}_inline"'
2379     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2380 done
2381
2382 aligned_stack_if_any="aarch64 ppc x86"
2383 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2384 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2385 fast_unaligned_if_any="aarch64 ppc x86"
2386 simd_align_16_if_any="altivec neon sse"
2387 simd_align_32_if_any="avx"
2388
2389 # system capabilities
2390 symver_if_any="symver_asm_label symver_gnu_asm"
2391 valgrind_backtrace_conflict="optimizations"
2392 valgrind_backtrace_deps="valgrind_valgrind_h"
2393
2394 # threading support
2395 atomics_gcc_if="sync_val_compare_and_swap"
2396 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2397 atomics_win32_if="MemoryBarrier"
2398 atomics_native_if_any="$ATOMICS_LIST"
2399 w32threads_deps="atomics_native"
2400 threads_if_any="$THREADS_LIST"
2401
2402 # subsystems
2403 cbs_h264_select="cbs golomb"
2404 cbs_h265_select="cbs golomb"
2405 cbs_mpeg2_select="cbs"
2406 dct_select="rdft"
2407 dirac_parse_select="golomb"
2408 error_resilience_select="me_cmp"
2409 faandct_deps="faan fdctdsp"
2410 faanidct_deps="faan idctdsp"
2411 h264dsp_select="startcode"
2412 hevcparse_select="golomb"
2413 frame_thread_encoder_deps="encoders threads"
2414 intrax8_select="blockdsp idctdsp"
2415 mdct_select="fft"
2416 mdct15_select="fft"
2417 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2418 mpeg_er_select="error_resilience"
2419 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2420 mpegaudiodsp_select="dct"
2421 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2422 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2423 vc1dsp_select="h264chroma qpeldsp startcode"
2424 rdft_select="fft"
2425
2426 # decoders / encoders
2427 aac_decoder_select="mdct15 mdct sinewin"
2428 aac_fixed_decoder_select="mdct sinewin"
2429 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2430 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2431 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2432 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2433 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2434 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2435 adpcm_g722_decoder_select="g722dsp"
2436 adpcm_g722_encoder_select="g722dsp"
2437 aic_decoder_select="golomb idctdsp"
2438 alac_encoder_select="lpc"
2439 als_decoder_select="bswapdsp"
2440 amrnb_decoder_select="lsp"
2441 amrwb_decoder_select="lsp"
2442 amv_decoder_select="sp5x_decoder exif"
2443 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2444 ape_decoder_select="bswapdsp llauddsp"
2445 apng_decoder_select="zlib"
2446 apng_encoder_select="llvidencdsp zlib"
2447 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2448 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2449 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2450 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2451 atrac1_decoder_select="mdct sinewin"
2452 atrac3_decoder_select="mdct"
2453 atrac3p_decoder_select="mdct sinewin"
2454 avrn_decoder_select="exif jpegtables"
2455 bink_decoder_select="blockdsp hpeldsp"
2456 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2457 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2458 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2459 clearvideo_decoder_select="idctdsp"
2460 cllc_decoder_select="bswapdsp"
2461 comfortnoise_encoder_select="lpc"
2462 cook_decoder_select="audiodsp mdct sinewin"
2463 cscd_decoder_select="lzo"
2464 cscd_decoder_suggest="zlib"
2465 dca_decoder_select="mdct"
2466 dds_decoder_select="texturedsp"
2467 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2468 dnxhd_decoder_select="blockdsp idctdsp"
2469 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2470 dolby_e_decoder_select="mdct"
2471 dvvideo_decoder_select="dvprofile idctdsp"
2472 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2473 dxa_decoder_select="zlib"
2474 dxv_decoder_select="lzf texturedsp"
2475 eac3_decoder_select="ac3_decoder"
2476 eac3_encoder_select="ac3_encoder"
2477 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2478 eatgq_decoder_select="aandcttables"
2479 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2480 exr_decoder_select="zlib"
2481 ffv1_decoder_select="rangecoder"
2482 ffv1_encoder_select="rangecoder"
2483 ffvhuff_decoder_select="huffyuv_decoder"
2484 ffvhuff_encoder_select="huffyuv_encoder"
2485 fic_decoder_select="golomb"
2486 flac_decoder_select="flacdsp"
2487 flac_encoder_select="bswapdsp flacdsp lpc"
2488 flashsv2_decoder_select="zlib"
2489 flashsv2_encoder_select="zlib"
2490 flashsv_decoder_select="zlib"
2491 flashsv_encoder_select="zlib"
2492 flv_decoder_select="h263_decoder"
2493 flv_encoder_select="h263_encoder"
2494 fourxm_decoder_select="blockdsp bswapdsp"
2495 fraps_decoder_select="bswapdsp huffman"
2496 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2497 g729_decoder_select="audiodsp"
2498 h261_decoder_select="mpegvideo"
2499 h261_encoder_select="aandcttables mpegvideoenc"
2500 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2501 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2502 h263i_decoder_select="h263_decoder"
2503 h263p_decoder_select="h263_decoder"
2504 h263p_encoder_select="h263_encoder"
2505 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2506 h264_decoder_suggest="error_resilience"
2507 hap_decoder_select="snappy texturedsp"
2508 hap_encoder_deps="libsnappy"
2509 hap_encoder_select="texturedspenc"
2510 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2511 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2512 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2513 iac_decoder_select="imc_decoder"
2514 imc_decoder_select="bswapdsp fft mdct sinewin"
2515 indeo3_decoder_select="hpeldsp"
2516 indeo4_decoder_select="ividsp"
2517 indeo5_decoder_select="ividsp"
2518 interplay_video_decoder_select="hpeldsp"
2519 jpegls_decoder_select="mjpeg_decoder"
2520 jv_decoder_select="blockdsp"
2521 lagarith_decoder_select="llviddsp"
2522 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2523 magicyuv_decoder_select="llviddsp"
2524 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2525 metasound_decoder_select="lsp mdct sinewin"
2526 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2527 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2528 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2529 mjpegb_decoder_select="mjpeg_decoder"
2530 mlp_decoder_select="mlp_parser"
2531 mlp_encoder_select="lpc"
2532 motionpixels_decoder_select="bswapdsp"
2533 mp1_decoder_select="mpegaudio"
2534 mp1float_decoder_select="mpegaudio"
2535 mp2_decoder_select="mpegaudio"
2536 mp2float_decoder_select="mpegaudio"
2537 mp3_decoder_select="mpegaudio"
2538 mp3adu_decoder_select="mpegaudio"
2539 mp3adufloat_decoder_select="mpegaudio"
2540 mp3float_decoder_select="mpegaudio"
2541 mp3on4_decoder_select="mpegaudio"
2542 mp3on4float_decoder_select="mpegaudio"
2543 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2544 mpc8_decoder_select="mpegaudiodsp"
2545 mpegvideo_decoder_select="mpegvideo"
2546 mpeg1video_decoder_select="mpegvideo"
2547 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2548 mpeg2video_decoder_select="mpegvideo"
2549 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2550 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2551 mpeg4_encoder_select="h263_encoder"
2552 msa1_decoder_select="mss34dsp"
2553 mscc_decoder_select="zlib"
2554 msmpeg4v1_decoder_select="h263_decoder"
2555 msmpeg4v2_decoder_select="h263_decoder"
2556 msmpeg4v2_encoder_select="h263_encoder"
2557 msmpeg4v3_decoder_select="h263_decoder"
2558 msmpeg4v3_encoder_select="h263_encoder"
2559 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2560 mts2_decoder_select="mss34dsp"
2561 mxpeg_decoder_select="mjpeg_decoder"
2562 nellymoser_decoder_select="mdct sinewin"
2563 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2564 nuv_decoder_select="idctdsp lzo"
2565 on2avc_decoder_select="mdct"
2566 opus_decoder_deps="swresample"
2567 opus_decoder_select="mdct15"
2568 opus_encoder_select="audio_frame_queue mdct15"
2569 png_decoder_select="zlib"
2570 png_encoder_select="llvidencdsp zlib"
2571 prores_decoder_select="blockdsp idctdsp"
2572 prores_encoder_select="fdctdsp"
2573 qcelp_decoder_select="lsp"
2574 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2575 ra_144_decoder_select="audiodsp"
2576 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2577 ralf_decoder_select="golomb"
2578 rawvideo_decoder_select="bswapdsp"
2579 rscc_decoder_select="zlib"
2580 rtjpeg_decoder_select="me_cmp"
2581 rv10_decoder_select="h263_decoder"
2582 rv10_encoder_select="h263_encoder"
2583 rv20_decoder_select="h263_decoder"
2584 rv20_encoder_select="h263_encoder"
2585 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2586 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2587 screenpresso_decoder_select="zlib"
2588 shorten_decoder_select="bswapdsp"
2589 sipr_decoder_select="lsp"
2590 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2591 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2592 sonic_decoder_select="golomb rangecoder"
2593 sonic_encoder_select="golomb rangecoder"
2594 sonic_ls_encoder_select="golomb rangecoder"
2595 sp5x_decoder_select="mjpeg_decoder"
2596 srgc_decoder_select="zlib"
2597 svq1_decoder_select="hpeldsp"
2598 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2599 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2600 svq3_decoder_suggest="zlib"
2601 tak_decoder_select="audiodsp"
2602 tdsc_decoder_select="zlib mjpeg_decoder"
2603 theora_decoder_select="vp3_decoder"
2604 thp_decoder_select="mjpeg_decoder"
2605 tiff_decoder_suggest="zlib lzma"
2606 tiff_encoder_suggest="zlib"
2607 truehd_decoder_select="mlp_parser"
2608 truehd_encoder_select="lpc"
2609 truemotion2_decoder_select="bswapdsp"
2610 truespeech_decoder_select="bswapdsp"
2611 tscc_decoder_select="zlib"
2612 twinvq_decoder_select="mdct lsp sinewin"
2613 txd_decoder_select="texturedsp"
2614 utvideo_decoder_select="bswapdsp llviddsp"
2615 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2616 vble_decoder_select="llviddsp"
2617 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2618 vc1_qsv_decoder_deps="libmfx"
2619 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2620 vc1image_decoder_select="vc1_decoder"
2621 vorbis_decoder_select="mdct"
2622 vorbis_encoder_select="mdct"
2623 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2624 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2625 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2626 vp6a_decoder_select="vp6_decoder"
2627 vp6f_decoder_select="vp6_decoder"
2628 vp7_decoder_select="h264pred videodsp vp8dsp"
2629 vp8_decoder_select="h264pred videodsp vp8dsp"
2630 vp9_decoder_select="videodsp vp9_parser"
2631 webp_decoder_select="vp8_decoder exif"
2632 wmalossless_decoder_select="llauddsp"
2633 wmapro_decoder_select="mdct sinewin wma_freqs"
2634 wmav1_decoder_select="mdct sinewin wma_freqs"
2635 wmav1_encoder_select="mdct sinewin wma_freqs"
2636 wmav2_decoder_select="mdct sinewin wma_freqs"
2637 wmav2_encoder_select="mdct sinewin wma_freqs"
2638 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2639 wmv1_decoder_select="h263_decoder"
2640 wmv1_encoder_select="h263_encoder"
2641 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2642 wmv2_encoder_select="h263_encoder wmv2dsp"
2643 wmv3_decoder_select="vc1_decoder"
2644 wmv3image_decoder_select="wmv3_decoder"
2645 xma1_decoder_select="wmapro_decoder"
2646 xma2_decoder_select="wmapro_decoder"
2647 zerocodec_decoder_select="zlib"
2648 zlib_decoder_select="zlib"
2649 zlib_encoder_select="zlib"
2650 zmbv_decoder_select="zlib"
2651 zmbv_encoder_select="zlib"
2652
2653 # hardware accelerators
2654 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2655 cuda_deps_any="libdl LoadLibrary"
2656 cuvid_deps="cuda"
2657 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2658 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2659 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2660 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2661 xvmc_deps="X11_extensions_XvMClib_h"
2662
2663 h263_vaapi_hwaccel_deps="vaapi"
2664 h263_vaapi_hwaccel_select="h263_decoder"
2665 h263_videotoolbox_hwaccel_deps="videotoolbox"
2666 h263_videotoolbox_hwaccel_select="h263_decoder"
2667 h264_cuvid_hwaccel_deps="cuda cuvid"
2668 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2669 h264_d3d11va_hwaccel_deps="d3d11va"
2670 h264_d3d11va_hwaccel_select="h264_decoder"
2671 h264_d3d11va2_hwaccel_deps="d3d11va"
2672 h264_d3d11va2_hwaccel_select="h264_decoder"
2673 h264_dxva2_hwaccel_deps="dxva2"
2674 h264_dxva2_hwaccel_select="h264_decoder"
2675 h264_mediacodec_hwaccel_deps="mediacodec"
2676 h264_mmal_hwaccel_deps="mmal"
2677 h264_qsv_hwaccel_deps="libmfx"
2678 h264_vaapi_hwaccel_deps="vaapi"
2679 h264_vaapi_hwaccel_select="h264_decoder"
2680 h264_vdpau_hwaccel_deps="vdpau"
2681 h264_vdpau_hwaccel_select="h264_decoder"
2682 h264_videotoolbox_hwaccel_deps="videotoolbox"
2683 h264_videotoolbox_hwaccel_select="h264_decoder"
2684 hevc_cuvid_hwaccel_deps="cuda cuvid"
2685 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2686 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2687 hevc_d3d11va_hwaccel_select="hevc_decoder"
2688 hevc_mediacodec_hwaccel_deps="mediacodec"
2689 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2690 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2691 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2692 hevc_dxva2_hwaccel_select="hevc_decoder"
2693 hevc_qsv_hwaccel_deps="libmfx"
2694 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2695 hevc_vaapi_hwaccel_select="hevc_decoder"
2696 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2697 hevc_vdpau_hwaccel_select="hevc_decoder"
2698 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2699 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2700 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2701 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2702 mpeg_xvmc_hwaccel_deps="xvmc"
2703 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2704 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2705 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2706 mpeg1_vdpau_hwaccel_deps="vdpau"
2707 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2708 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2709 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2710 mpeg1_xvmc_hwaccel_deps="xvmc"
2711 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2712 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2713 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2714 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2715 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2716 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2717 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2718 mpeg2_dxva2_hwaccel_deps="dxva2"
2719 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2720 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2721 mpeg2_mmal_hwaccel_deps="mmal"
2722 mpeg2_qsv_hwaccel_deps="libmfx"
2723 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2724 mpeg2_vaapi_hwaccel_deps="vaapi"
2725 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_vdpau_hwaccel_deps="vdpau"
2727 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2728 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2729 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2730 mpeg2_xvmc_hwaccel_deps="xvmc"
2731 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2732 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2733 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2734 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2735 mpeg4_mmal_hwaccel_deps="mmal"
2736 mpeg4_vaapi_hwaccel_deps="vaapi"
2737 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2738 mpeg4_vdpau_hwaccel_deps="vdpau"
2739 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2740 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2741 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2742 vc1_cuvid_hwaccel_deps="cuda cuvid"
2743 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2744 vc1_d3d11va_hwaccel_deps="d3d11va"
2745 vc1_d3d11va_hwaccel_select="vc1_decoder"
2746 vc1_d3d11va2_hwaccel_deps="d3d11va"
2747 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2748 vc1_dxva2_hwaccel_deps="dxva2"
2749 vc1_dxva2_hwaccel_select="vc1_decoder"
2750 vc1_mmal_hwaccel_deps="mmal"
2751 vc1_qsv_hwaccel_deps="libmfx"
2752 vc1_qsv_hwaccel_select="qsvdec_vc1"
2753 vc1_vaapi_hwaccel_deps="vaapi"
2754 vc1_vaapi_hwaccel_select="vc1_decoder"
2755 vc1_vdpau_hwaccel_deps="vdpau"
2756 vc1_vdpau_hwaccel_select="vc1_decoder"
2757 vp8_cuvid_hwaccel_deps="cuda cuvid"
2758 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2759 vp9_cuvid_hwaccel_deps="cuda cuvid"
2760 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2761 vp8_mediacodec_hwaccel_deps="mediacodec"
2762 vp8_qsv_hwaccel_deps="libmfx"
2763 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2764 vp9_d3d11va_hwaccel_select="vp9_decoder"
2765 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2766 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2767 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2768 vp9_dxva2_hwaccel_select="vp9_decoder"
2769 vp9_mediacodec_hwaccel_deps="mediacodec"
2770 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2771 vp9_vaapi_hwaccel_select="vp9_decoder"
2772 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2773 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2774 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2775 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2776 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2777
2778 # hardware-accelerated codecs
2779 omx_deps="libdl pthreads"
2780 omx_rpi_select="omx"
2781 qsvdec_select="qsv"
2782 qsvenc_select="qsv"
2783 vaapi_encode_deps="vaapi"
2784 v4l2_m2m_deps_any="linux_videodev2_h"
2785
2786 hwupload_cuda_filter_deps="cuda"
2787 scale_npp_filter_deps="cuda libnpp"
2788 scale_cuda_filter_deps="cuda_sdk"
2789 thumbnail_cuda_filter_deps="cuda_sdk"
2790
2791 nvenc_deps="cuda"
2792 nvenc_deps_any="libdl LoadLibrary"
2793 nvenc_encoder_deps="nvenc"
2794
2795 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2796 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2797 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2798 h264_cuvid_decoder_deps="cuda cuvid"
2799 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2800 h264_mediacodec_decoder_deps="mediacodec"
2801 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2802 h264_mmal_decoder_deps="mmal"
2803 h264_nvenc_encoder_deps="nvenc"
2804 h264_omx_encoder_deps="omx"
2805 h264_qsv_decoder_deps="libmfx"
2806 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2807 h264_qsv_encoder_deps="libmfx"
2808 h264_qsv_encoder_select="qsvenc"
2809 h264_rkmpp_decoder_deps="rkmpp"
2810 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2811 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2812 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2813 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2814 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2815 hevc_cuvid_decoder_deps="cuda cuvid"
2816 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2817 hevc_mediacodec_decoder_deps="mediacodec"
2818 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2819 hevc_nvenc_encoder_deps="nvenc"
2820 hevc_qsv_decoder_deps="libmfx"
2821 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2822 hevc_qsv_encoder_deps="libmfx"
2823 hevc_qsv_encoder_select="hevcparse qsvenc"
2824 hevc_rkmpp_decoder_deps="rkmpp"
2825 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2826 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2827 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2828 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2829 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2830 mjpeg_cuvid_decoder_deps="cuda cuvid"
2831 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2832 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2833 mpeg1_cuvid_decoder_deps="cuda cuvid"
2834 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2835 mpeg2_crystalhd_decoder_select="crystalhd"
2836 mpeg2_cuvid_decoder_deps="cuda cuvid"
2837 mpeg2_mmal_decoder_deps="mmal"
2838 mpeg2_mediacodec_decoder_deps="mediacodec"
2839 mpeg2_qsv_decoder_deps="libmfx"
2840 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2841 mpeg2_qsv_encoder_deps="libmfx"
2842 mpeg2_qsv_encoder_select="qsvenc"
2843 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2844 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2845 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2846 mpeg4_crystalhd_decoder_select="crystalhd"
2847 mpeg4_cuvid_decoder_deps="cuda cuvid"
2848 mpeg4_mediacodec_decoder_deps="mediacodec"
2849 mpeg4_mmal_decoder_deps="mmal"
2850 mpeg4_omx_encoder_deps="omx"
2851 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2852 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2853 msmpeg4_crystalhd_decoder_select="crystalhd"
2854 nvenc_h264_encoder_select="h264_nvenc_encoder"
2855 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2856 vc1_crystalhd_decoder_select="crystalhd"
2857 vc1_cuvid_decoder_deps="cuda cuvid"
2858 vc1_mmal_decoder_deps="mmal"
2859 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2860 vp8_cuvid_decoder_deps="cuda cuvid"
2861 vp8_mediacodec_decoder_deps="mediacodec"
2862 vp8_qsv_decoder_deps="libmfx"
2863 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2864 vp8_rkmpp_decoder_deps="rkmpp"
2865 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2866 vp8_vaapi_encoder_select="vaapi_encode"
2867 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2868 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2869 vp9_cuvid_decoder_deps="cuda cuvid"
2870 vp9_mediacodec_decoder_deps="mediacodec"
2871 vp9_rkmpp_decoder_deps="rkmpp"
2872 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2873 vp9_vaapi_encoder_select="vaapi_encode"
2874 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2875 wmv3_crystalhd_decoder_select="crystalhd"
2876
2877 # parsers
2878 h264_parser_select="golomb h264dsp h264parse"
2879 hevc_parser_select="hevcparse"
2880 mpegaudio_parser_select="mpegaudioheader"
2881 mpegvideo_parser_select="mpegvideo"
2882 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2883 vc1_parser_select="vc1dsp"
2884
2885 # bitstream_filters
2886 h264_metadata_bsf_select="cbs_h264"
2887 h264_redundant_pps_bsf_select="cbs_h264"
2888 hevc_metadata_bsf_select="cbs_h265"
2889 mjpeg2jpeg_bsf_select="jpegtables"
2890 mpeg2_metadata_bsf_select="cbs_mpeg2"
2891 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2892
2893 # external libraries
2894 aac_at_decoder_deps="audiotoolbox"
2895 ac3_at_decoder_deps="audiotoolbox"
2896 ac3_at_decoder_select="ac3_parser"
2897 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2898 alac_at_decoder_deps="audiotoolbox"
2899 amr_nb_at_decoder_deps="audiotoolbox"
2900 avisynth_deps_any="libdl LoadLibrary"
2901 avisynth_demuxer_deps="avisynth"
2902 avisynth_demuxer_select="riffdec"
2903 eac3_at_decoder_deps="audiotoolbox"
2904 eac3_at_decoder_select="ac3_parser"
2905 gsm_ms_at_decoder_deps="audiotoolbox"
2906 ilbc_at_decoder_deps="audiotoolbox"
2907 mp1_at_decoder_deps="audiotoolbox"
2908 mp2_at_decoder_deps="audiotoolbox"
2909 mp3_at_decoder_deps="audiotoolbox"
2910 mp1_at_decoder_select="mpegaudioheader"
2911 mp2_at_decoder_select="mpegaudioheader"
2912 mp3_at_decoder_select="mpegaudioheader"
2913 pcm_alaw_at_decoder_deps="audiotoolbox"
2914 pcm_mulaw_at_decoder_deps="audiotoolbox"
2915 qdmc_at_decoder_deps="audiotoolbox"
2916 qdm2_at_decoder_deps="audiotoolbox"
2917 aac_at_encoder_deps="audiotoolbox"
2918 aac_at_encoder_select="audio_frame_queue"
2919 alac_at_encoder_deps="audiotoolbox"
2920 alac_at_encoder_select="audio_frame_queue"
2921 ilbc_at_encoder_deps="audiotoolbox"
2922 ilbc_at_encoder_select="audio_frame_queue"
2923 pcm_alaw_at_encoder_deps="audiotoolbox"
2924 pcm_alaw_at_encoder_select="audio_frame_queue"
2925 pcm_mulaw_at_encoder_deps="audiotoolbox"
2926 pcm_mulaw_at_encoder_select="audio_frame_queue"
2927 chromaprint_muxer_deps="chromaprint"
2928 h264_videotoolbox_encoder_deps="pthreads"
2929 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2930 libcelt_decoder_deps="libcelt"
2931 libfdk_aac_decoder_deps="libfdk_aac"
2932 libfdk_aac_encoder_deps="libfdk_aac"
2933 libfdk_aac_encoder_select="audio_frame_queue"
2934 libgme_demuxer_deps="libgme"
2935 libgsm_decoder_deps="libgsm"
2936 libgsm_encoder_deps="libgsm"
2937 libgsm_ms_decoder_deps="libgsm"
2938 libgsm_ms_encoder_deps="libgsm"
2939 libilbc_decoder_deps="libilbc"
2940 libilbc_encoder_deps="libilbc"
2941 libkvazaar_encoder_deps="libkvazaar"
2942 libmodplug_demuxer_deps="libmodplug"
2943 libmp3lame_encoder_deps="libmp3lame"
2944 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2945 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2946 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2947 libopencore_amrnb_encoder_select="audio_frame_queue"
2948 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2949 libopenh264_decoder_deps="libopenh264"
2950 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2951 libopenh264_encoder_deps="libopenh264"
2952 libopenjpeg_decoder_deps="libopenjpeg"
2953 libopenjpeg_encoder_deps="libopenjpeg"
2954 libopenmpt_demuxer_deps="libopenmpt"
2955 libopus_decoder_deps="libopus"
2956 libopus_encoder_deps="libopus"
2957 libopus_encoder_select="audio_frame_queue"
2958 librsvg_decoder_deps="librsvg"
2959 libshine_encoder_deps="libshine"
2960 libshine_encoder_select="audio_frame_queue"
2961 libspeex_decoder_deps="libspeex"
2962 libspeex_encoder_deps="libspeex"
2963 libspeex_encoder_select="audio_frame_queue"
2964 libtheora_encoder_deps="libtheora"
2965 libtwolame_encoder_deps="libtwolame"
2966 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2967 libvorbis_decoder_deps="libvorbis"
2968 libvorbis_encoder_deps="libvorbis libvorbisenc"
2969 libvorbis_encoder_select="audio_frame_queue"
2970 libvpx_vp8_decoder_deps="libvpx"
2971 libvpx_vp8_encoder_deps="libvpx"
2972 libvpx_vp9_decoder_deps="libvpx"
2973 libvpx_vp9_encoder_deps="libvpx"
2974 libwavpack_encoder_deps="libwavpack"
2975 libwavpack_encoder_select="audio_frame_queue"
2976 libwebp_encoder_deps="libwebp"
2977 libwebp_anim_encoder_deps="libwebp"
2978 libx262_encoder_deps="libx262"
2979 libx264_encoder_deps="libx264"
2980 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2981 libx264rgb_encoder_select="libx264_encoder"
2982 libx265_encoder_deps="libx265"
2983 libxavs_encoder_deps="libxavs"
2984 libxvid_encoder_deps="libxvid"
2985 libzvbi_teletext_decoder_deps="libzvbi"
2986 videotoolbox_suggest="coreservices"
2987 videotoolbox_deps="corefoundation coremedia corevideo"
2988 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2989
2990 # demuxers / muxers
2991 ac3_demuxer_select="ac3_parser"
2992 aiff_muxer_select="iso_media"
2993 asf_demuxer_select="riffdec"
2994 asf_o_demuxer_select="riffdec"
2995 asf_muxer_select="riffenc"
2996 asf_stream_muxer_select="asf_muxer"
2997 avi_demuxer_select="iso_media riffdec exif"
2998 avi_muxer_select="riffenc"
2999 caf_demuxer_select="iso_media riffdec"
3000 caf_muxer_select="iso_media"
3001 dash_muxer_select="mp4_muxer"
3002 dash_demuxer_deps="libxml2"
3003 dirac_demuxer_select="dirac_parser"
3004 dts_demuxer_select="dca_parser"
3005 dtshd_demuxer_select="dca_parser"
3006 dv_demuxer_select="dvprofile"
3007 dv_muxer_select="dvprofile"
3008 dxa_demuxer_select="riffdec"
3009 eac3_demuxer_select="ac3_parser"
3010 f4v_muxer_select="mov_muxer"
3011 fifo_muxer_deps="threads"
3012 flac_demuxer_select="flac_parser"
3013 hds_muxer_select="flv_muxer"
3014 hls_muxer_select="mpegts_muxer"
3015 hls_muxer_suggest="gcrypt openssl"
3016 image2_alias_pix_demuxer_select="image2_demuxer"
3017 image2_brender_pix_demuxer_select="image2_demuxer"
3018 ipod_muxer_select="mov_muxer"
3019 ismv_muxer_select="mov_muxer"
3020 matroska_audio_muxer_select="matroska_muxer"
3021 matroska_demuxer_select="iso_media riffdec"
3022 matroska_demuxer_suggest="bzlib lzo zlib"
3023 matroska_muxer_select="iso_media riffenc"
3024 mmf_muxer_select="riffenc"
3025 mov_demuxer_select="iso_media riffdec"
3026 mov_demuxer_suggest="zlib"
3027 mov_muxer_select="iso_media riffenc rtpenc_chain"
3028 mp3_demuxer_select="mpegaudio_parser"
3029 mp3_muxer_select="mpegaudioheader"
3030 mp4_muxer_select="mov_muxer"
3031 mpegts_demuxer_select="iso_media"
3032 mpegts_muxer_select="adts_muxer latm_muxer"
3033 mpegtsraw_demuxer_select="mpegts_demuxer"
3034 mxf_d10_muxer_select="mxf_muxer"
3035 mxf_opatom_muxer_select="mxf_muxer"
3036 nut_muxer_select="riffenc"
3037 nuv_demuxer_select="riffdec"
3038 oga_muxer_select="ogg_muxer"
3039 ogg_demuxer_select="dirac_parse"
3040 ogv_muxer_select="ogg_muxer"
3041 opus_muxer_select="ogg_muxer"
3042 psp_muxer_select="mov_muxer"
3043 rtp_demuxer_select="sdp_demuxer"
3044 rtp_muxer_select="golomb"
3045 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3046 rtsp_demuxer_select="http_protocol rtpdec"
3047 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3048 sap_demuxer_select="sdp_demuxer"
3049 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3050 sdp_demuxer_select="rtpdec"
3051 smoothstreaming_muxer_select="ismv_muxer"
3052 spdif_muxer_select="aac_parser"
3053 spx_muxer_select="ogg_muxer"
3054 swf_demuxer_suggest="zlib"
3055 tak_demuxer_select="tak_parser"
3056 tg2_muxer_select="mov_muxer"
3057 tgp_muxer_select="mov_muxer"
3058 vobsub_demuxer_select="mpegps_demuxer"
3059 w64_demuxer_select="wav_demuxer"
3060 w64_muxer_select="wav_muxer"
3061 wav_demuxer_select="riffdec"
3062 wav_muxer_select="riffenc"
3063 webm_muxer_select="iso_media riffenc"
3064 webm_dash_manifest_demuxer_select="matroska_demuxer"
3065 wtv_demuxer_select="mpegts_demuxer riffdec"
3066 wtv_muxer_select="mpegts_muxer riffenc"
3067 xmv_demuxer_select="riffdec"
3068 xwma_demuxer_select="riffdec"
3069
3070 # indevs / outdevs
3071 alsa_indev_deps="alsa"
3072 alsa_outdev_deps="alsa"
3073 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3074 avfoundation_indev_suggest="coregraphics applicationservices"
3075 avfoundation_indev_extralibs="-framework Foundation"
3076 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3077 caca_outdev_deps="libcaca"
3078 decklink_deps_any="libdl LoadLibrary"
3079 decklink_indev_deps="decklink threads"
3080 decklink_indev_extralibs="-lstdc++"
3081 decklink_outdev_deps="decklink threads"
3082 decklink_outdev_extralibs="-lstdc++"
3083 libndi_newtek_indev_deps="libndi_newtek"
3084 libndi_newtek_indev_extralibs="-lndi"
3085 libndi_newtek_outdev_deps="libndi_newtek"
3086 libndi_newtek_outdev_extralibs="-lndi"
3087 dshow_indev_deps="IBaseFilter"
3088 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3089 fbdev_indev_deps="linux_fb_h"
3090 fbdev_outdev_deps="linux_fb_h"
3091 gdigrab_indev_deps="CreateDIBSection"
3092 gdigrab_indev_extralibs="-lgdi32"
3093 gdigrab_indev_select="bmp_decoder"
3094 iec61883_indev_deps="libiec61883"
3095 jack_indev_deps="libjack"
3096 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3097 kmsgrab_indev_deps="libdrm"
3098 lavfi_indev_deps="avfilter"
3099 libcdio_indev_deps="libcdio"
3100 libdc1394_indev_deps="libdc1394"
3101 openal_indev_deps="openal"
3102 opengl_outdev_deps="opengl"
3103 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3104 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3105 pulse_indev_deps="libpulse"
3106 pulse_outdev_deps="libpulse"
3107 sdl2_outdev_deps="sdl2"
3108 sndio_indev_deps="sndio"
3109 sndio_outdev_deps="sndio"
3110 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3111 v4l2_indev_suggest="libv4l2"
3112 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3113 v4l2_outdev_suggest="libv4l2"
3114 vfwcap_indev_deps="vfw32 vfwcap_defines"
3115 xcbgrab_indev_deps="libxcb"
3116 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3117 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3118 xv_outdev_extralibs="-lXv -lX11 -lXext"
3119
3120 # protocols
3121 async_protocol_deps="threads"
3122 bluray_protocol_deps="libbluray"
3123 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3124 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3125 ffrtmpcrypt_protocol_select="tcp_protocol"
3126 ffrtmphttp_protocol_conflict="librtmp_protocol"
3127 ffrtmphttp_protocol_select="http_protocol"
3128 ftp_protocol_select="tcp_protocol"
3129 gopher_protocol_select="network"
3130 http_protocol_select="tcp_protocol"
3131 http_protocol_suggest="zlib"
3132 httpproxy_protocol_select="tcp_protocol"
3133 httpproxy_protocol_suggest="zlib"
3134 https_protocol_select="tls_protocol"
3135 https_protocol_suggest="zlib"
3136 icecast_protocol_select="http_protocol"
3137 librtmp_protocol_deps="librtmp"
3138 librtmpe_protocol_deps="librtmp"
3139 librtmps_protocol_deps="librtmp"
3140 librtmpt_protocol_deps="librtmp"
3141 librtmpte_protocol_deps="librtmp"
3142 libsmbclient_protocol_deps="libsmbclient gplv3"
3143 libssh_protocol_deps="libssh"
3144 mmsh_protocol_select="http_protocol"
3145 mmst_protocol_select="network"
3146 rtmp_protocol_conflict="librtmp_protocol"
3147 rtmp_protocol_select="tcp_protocol"
3148 rtmp_protocol_suggest="zlib"
3149 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3150 rtmpe_protocol_suggest="zlib"
3151 rtmps_protocol_conflict="librtmp_protocol"
3152 rtmps_protocol_select="tls_protocol"
3153 rtmps_protocol_suggest="zlib"
3154 rtmpt_protocol_select="ffrtmphttp_protocol"
3155 rtmpt_protocol_suggest="zlib"
3156 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3157 rtmpte_protocol_suggest="zlib"
3158 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3159 rtmpts_protocol_suggest="zlib"
3160 rtp_protocol_select="udp_protocol"
3161 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3162 sctp_protocol_select="network"
3163 srtp_protocol_select="rtp_protocol srtp"
3164 tcp_protocol_select="network"
3165 tls_gnutls_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol"
3166 tls_gnutls_protocol_deps="gnutls"
3167 tls_gnutls_protocol_select="tcp_protocol"
3168 tls_openssl_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol"
3169 tls_openssl_protocol_deps="openssl"
3170 tls_openssl_protocol_select="tcp_protocol"
3171 tls_schannel_protocol_deps="schannel"
3172 tls_schannel_protocol_select="tcp_protocol"
3173 tls_securetransport_protocol_deps="securetransport"
3174 tls_securetransport_protocol_select="tcp_protocol"
3175 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3176 udp_protocol_select="network"
3177 udplite_protocol_select="network"
3178 unix_protocol_deps="sys_un_h"
3179 unix_protocol_select="network"
3180
3181 # filters
3182 afftfilt_filter_deps="avcodec"
3183 afftfilt_filter_select="fft"
3184 afir_filter_deps="avcodec"
3185 afir_filter_select="fft"
3186 amovie_filter_deps="avcodec avformat"
3187 aresample_filter_deps="swresample"
3188 ass_filter_deps="libass"
3189 atempo_filter_deps="avcodec"
3190 atempo_filter_select="rdft"
3191 azmq_filter_deps="libzmq"
3192 blackframe_filter_deps="gpl"
3193 boxblur_filter_deps="gpl"
3194 bs2b_filter_deps="libbs2b"
3195 colormatrix_filter_deps="gpl"
3196 coreimage_filter_deps="coreimage appkit"
3197 coreimage_filter_extralibs="-framework OpenGL"
3198 coreimagesrc_filter_deps="coreimage appkit"
3199 coreimagesrc_filter_extralibs="-framework OpenGL"
3200 cover_rect_filter_deps="avcodec avformat gpl"
3201 cropdetect_filter_deps="gpl"
3202 deinterlace_qsv_filter_deps="libmfx"
3203 deinterlace_vaapi_filter_deps="vaapi"
3204 delogo_filter_deps="gpl"
3205 deshake_filter_select="pixelutils"
3206 deshake_filter_suggest="opencl"
3207 drawtext_filter_deps="libfreetype"
3208 drawtext_filter_suggest="libfontconfig libfribidi"
3209 elbg_filter_deps="avcodec"
3210 eq_filter_deps="gpl"
3211 fftfilt_filter_deps="avcodec"
3212 fftfilt_filter_select="rdft"
3213 find_rect_filter_deps="avcodec avformat gpl"
3214 firequalizer_filter_deps="avcodec"
3215 firequalizer_filter_select="rdft"
3216 flite_filter_deps="libflite"
3217 framerate_filter_select="pixelutils"
3218 frei0r_filter_deps="frei0r libdl"
3219 frei0r_src_filter_deps="frei0r libdl"
3220 fspp_filter_deps="gpl"
3221 geq_filter_deps="gpl"
3222 histeq_filter_deps="gpl"
3223 hqdn3d_filter_deps="gpl"
3224 interlace_filter_deps="gpl"
3225 kerndeint_filter_deps="gpl"
3226 ladspa_filter_deps="ladspa libdl"
3227 mcdeint_filter_deps="avcodec gpl"
3228 movie_filter_deps="avcodec avformat"
3229 mpdecimate_filter_deps="gpl"
3230 mpdecimate_filter_select="pixelutils"
3231 mptestsrc_filter_deps="gpl"
3232 negate_filter_deps="lut_filter"
3233 nnedi_filter_deps="gpl"
3234 ocr_filter_deps="libtesseract"
3235 ocv_filter_deps="libopencv"
3236 owdenoise_filter_deps="gpl"
3237 pan_filter_deps="swresample"
3238 perspective_filter_deps="gpl"
3239 phase_filter_deps="gpl"
3240 pp7_filter_deps="gpl"
3241 pp_filter_deps="gpl postproc"
3242 pullup_filter_deps="gpl"
3243 removelogo_filter_deps="avcodec avformat swscale"
3244 repeatfields_filter_deps="gpl"
3245 resample_filter_deps="avresample"
3246 rubberband_filter_deps="librubberband"
3247 sab_filter_deps="gpl swscale"
3248 scale2ref_filter_deps="swscale"
3249 scale_filter_deps="swscale"
3250 scale_qsv_filter_deps="libmfx"
3251 select_filter_select="pixelutils"
3252 showcqt_filter_deps="avcodec avformat swscale"
3253 showcqt_filter_suggest="libfontconfig libfreetype"
3254 showcqt_filter_select="fft"
3255 showfreqs_filter_deps="avcodec"
3256 showfreqs_filter_select="fft"
3257 showspectrum_filter_deps="avcodec"
3258 showspectrum_filter_select="fft"
3259 showspectrumpic_filter_deps="avcodec"
3260 showspectrumpic_filter_select="fft"
3261 signature_filter_deps="gpl avcodec avformat"
3262 smartblur_filter_deps="gpl swscale"
3263 sofalizer_filter_deps="libmysofa avcodec"
3264 sofalizer_filter_select="fft"
3265 spectrumsynth_filter_deps="avcodec"
3266 spectrumsynth_filter_select="fft"
3267 spp_filter_deps="gpl avcodec"
3268 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3269 stereo3d_filter_deps="gpl"
3270 subtitles_filter_deps="avformat avcodec libass"
3271 super2xsai_filter_deps="gpl"
3272 pixfmts_super2xsai_test_deps="super2xsai_filter"
3273 tinterlace_filter_deps="gpl"
3274 tinterlace_merge_test_deps="tinterlace_filter"
3275 tinterlace_pad_test_deps="tinterlace_filter"
3276 tonemap_filter_deps="const_nan"
3277 uspp_filter_deps="gpl avcodec"
3278 unsharp_filter_suggest="opencl"
3279 vaguedenoiser_filter_deps="gpl"
3280 vidstabdetect_filter_deps="libvidstab"
3281 vidstabtransform_filter_deps="libvidstab"
3282 libvmaf_filter_deps="libvmaf"
3283 zmq_filter_deps="libzmq"
3284 zoompan_filter_deps="swscale"
3285 zscale_filter_deps="libzimg const_nan"
3286 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3287
3288 # examples
3289 avio_dir_cmd_deps="avformat avutil"
3290 avio_reading_deps="avformat avcodec avutil"
3291 decode_audio_example_deps="avcodec avutil"
3292 decode_video_example_deps="avcodec avutil"
3293 demuxing_decoding_example_deps="avcodec avformat avutil"
3294 encode_audio_example_deps="avcodec avutil"
3295 encode_video_example_deps="avcodec avutil"
3296 extract_mvs_example_deps="avcodec avformat avutil"
3297 filter_audio_example_deps="avfilter avutil"
3298 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3299 filtering_video_example_deps="avfilter avcodec avformat avutil"
3300 http_multiclient_example_deps="avformat avutil fork"
3301 hw_decode_example_deps="avcodec avformat avutil"
3302 metadata_example_deps="avformat avutil"
3303 muxing_example_deps="avcodec avformat avutil swscale"
3304 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3305 remuxing_example_deps="avcodec avformat avutil"
3306 resampling_audio_example_deps="avutil swresample"
3307 scaling_video_example_deps="avutil swscale"
3308 transcode_aac_example_deps="avcodec avformat swresample"
3309 transcoding_example_deps="avfilter avcodec avformat avutil"
3310
3311 # EXTRALIBS_LIST
3312 cpu_init_extralibs="pthreads_extralibs"
3313 cws2fws_extralibs="zlib_extralibs"
3314
3315 # libraries, in linking order
3316 avcodec_deps="avutil"
3317 avcodec_suggest="libm"
3318 avcodec_select="null_bsf"
3319 avdevice_deps="avformat avcodec avutil"
3320 avdevice_suggest="libm"
3321 avfilter_deps="avutil"
3322 avfilter_suggest="libm"
3323 avformat_deps="avcodec avutil"
3324 avformat_suggest="libm network"
3325 avresample_deps="avutil"
3326 avresample_suggest="libm"
3327 avutil_suggest="clock_gettime libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3328 postproc_deps="avutil gpl"
3329 postproc_suggest="libm"
3330 swresample_deps="avutil"
3331 swresample_suggest="libm libsoxr"
3332 swscale_deps="avutil"
3333 swscale_suggest="libm"
3334
3335 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3336 avfilter_extralibs="pthreads_extralibs"
3337 avutil_extralibs="nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3338
3339 # programs
3340 ffmpeg_deps="avcodec avfilter avformat swresample"
3341 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3342                null_filter
3343                trim_filter"
3344 ffmpeg_suggest="ole32 psapi shell32"
3345 ffplay_deps="avcodec avformat swscale swresample sdl2"
3346 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3347 ffplay_suggest="shell32"
3348 ffprobe_deps="avcodec avformat"
3349 ffprobe_suggest="shell32"
3350 ffserver_deps="avformat fork sarestart"
3351 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3352
3353 # documentation
3354 podpages_deps="perl"
3355 manpages_deps="perl pod2man"
3356 htmlpages_deps="perl"
3357 htmlpages_deps_any="makeinfo_html texi2html"
3358 txtpages_deps="perl makeinfo"
3359 doc_deps_any="manpages htmlpages podpages txtpages"
3360
3361 # default parameters
3362
3363 logfile="ffbuild/config.log"
3364
3365 # installation paths
3366 prefix_default="/usr/local"
3367 bindir_default='${prefix}/bin'
3368 datadir_default='${prefix}/share/ffmpeg'
3369 docdir_default='${prefix}/share/doc/ffmpeg'
3370 incdir_default='${prefix}/include'
3371 libdir_default='${prefix}/lib'
3372 mandir_default='${prefix}/share/man'
3373
3374 # toolchain
3375 ar_default="ar"
3376 cc_default="gcc"
3377 cxx_default="g++"
3378 host_cc_default="gcc"
3379 doxygen_default="doxygen"
3380 install="install"
3381 ln_s_default="ln -s -f"
3382 nm_default="nm -g"
3383 pkg_config_default=pkg-config
3384 ranlib_default="ranlib"
3385 strip_default="strip"
3386 version_script='--version-script'
3387 x86asmexe_default="nasm"
3388 windres_default="windres"
3389 nvcc_default="nvcc"
3390 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3391 striptype="direct"
3392
3393 # OS
3394 target_os_default=$(tolower $(uname -s))
3395 host_os=$target_os_default
3396
3397 # machine
3398 if test "$target_os_default" = aix; then
3399     arch_default=$(uname -p)
3400     strip_default="strip -X32_64"
3401 else
3402     arch_default=$(uname -m)
3403 fi
3404 cpu="generic"
3405 intrinsics="none"
3406
3407 # configurable options
3408 enable $PROGRAM_LIST
3409 enable $DOCUMENT_LIST
3410 enable $EXAMPLE_LIST
3411 enable $(filter_out avresample $LIBRARY_LIST)
3412 enable stripping
3413
3414 enable asm
3415 enable debug
3416 enable doc
3417 enable faan faandct faanidct
3418 enable optimizations
3419 enable runtime_cpudetect
3420 enable safe_bitstream_reader
3421 enable static
3422 enable swscale_alpha
3423 enable valgrind_backtrace
3424
3425 sws_max_filter_size_default=256
3426 set_default sws_max_filter_size
3427
3428 # internal components are enabled by default
3429 enable $EXTRALIBS_LIST
3430
3431 # Avoid external, non-system, libraries getting enabled by dependency resolution
3432 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3433
3434 # build settings
3435 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3436 LIBPREF="lib"
3437 LIBSUF=".a"
3438 FULLNAME='$(NAME)$(BUILDSUF)'
3439 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3440 SLIBPREF="lib"
3441 SLIBSUF=".so"
3442 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3443 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3444 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3445 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3446 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3447 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3448 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3449
3450 asflags_filter=echo
3451 cflags_filter=echo
3452 ldflags_filter=echo
3453
3454 AS_C='-c'
3455 AS_O='-o $@'
3456 CC_C='-c'
3457 CC_E='-E -o $@'
3458 CC_O='-o $@'
3459 CXX_C='-c'
3460 CXX_O='-o $@'
3461 OBJCC_C='-c'
3462 OBJCC_E='-E -o $@'
3463 OBJCC_O='-o $@'
3464 X86ASM_O='-o $@'
3465 LD_O='-o $@'
3466 LD_LIB='-l%'
3467 LD_PATH='-L'
3468 HOSTCC_C='-c'
3469 HOSTCC_E='-E -o $@'
3470 HOSTCC_O='-o $@'
3471 HOSTLD_O='-o $@'
3472 NVCC_C='-c'
3473 NVCC_O='-o $@'
3474
3475 host_extralibs='-lm'
3476 host_cflags_filter=echo
3477 host_ldflags_filter=echo
3478
3479 target_path='$(CURDIR)'
3480
3481 # since the object filename is not given with the -MM flag, the compiler
3482 # is only able to print the basename, and we must add the path ourselves
3483 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3484 DEPFLAGS='-MM'
3485
3486 mkdir -p ffbuild
3487
3488 # find source path
3489 if test -f configure; then
3490     source_path=.
3491 else
3492     source_path=$(cd $(dirname "$0"); pwd)
3493     case "$source_path" in
3494         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3495     esac
3496     test -e "$source_path/config.h" &&
3497         die "Out of tree builds are impossible with config.h in source dir."
3498 fi
3499
3500 for v in "$@"; do
3501     r=${v#*=}
3502     l=${v%"$r"}
3503     r=$(sh_quote "$r")
3504     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3505 done
3506
3507 find_things(){
3508     thing=$1
3509     pattern=$2
3510     file=$source_path/$3
3511     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3512 }
3513
3514 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3515 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3516 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3517 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3518 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3519 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3520 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3521 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3522 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3523
3524 find_things_extern(){
3525     thing=$1
3526     pattern=$2
3527     file=$source_path/$3
3528     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3529 }
3530
3531 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3532 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3533
3534 AVCODEC_COMPONENTS_LIST="
3535     $BSF_LIST
3536     $DECODER_LIST
3537     $ENCODER_LIST
3538     $HWACCEL_LIST
3539     $PARSER_LIST
3540 "
3541
3542 AVDEVICE_COMPONENTS_LIST="
3543     $INDEV_LIST
3544     $OUTDEV_LIST
3545 "
3546
3547 AVFILTER_COMPONENTS_LIST="
3548     $FILTER_LIST
3549 "
3550
3551 AVFORMAT_COMPONENTS_LIST="
3552     $DEMUXER_LIST
3553     $MUXER_LIST
3554     $PROTOCOL_LIST
3555 "
3556
3557 ALL_COMPONENTS="
3558     $AVCODEC_COMPONENTS_LIST
3559     $AVDEVICE_COMPONENTS_LIST
3560     $AVFILTER_COMPONENTS_LIST
3561     $AVFORMAT_COMPONENTS_LIST
3562 "
3563
3564 for n in $COMPONENT_LIST; do
3565     v=$(toupper ${n%s})_LIST
3566     eval enable \$$v
3567     eval ${n}_if_any="\$$v"
3568 done
3569
3570 enable $ARCH_EXT_LIST
3571
3572 die_unknown(){
3573     echo "Unknown option \"$1\"."
3574     echo "See $0 --help for available options."
3575     exit 1
3576 }
3577
3578 print_in_columns() {
3579     cols=$(expr $ncols / 24)
3580     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3581 }
3582
3583 show_list() {
3584     suffix=_$1
3585     shift
3586     echo $* | sed s/$suffix//g | print_in_columns
3587     exit 0
3588 }
3589
3590 rand_list(){
3591     IFS=', '
3592     set -- $*
3593     unset IFS
3594     for thing; do
3595         comp=${thing%:*}
3596         prob=${thing#$comp}
3597         prob=${prob#:}
3598         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3599         echo "prob ${prob:-0.5}"
3600         printf '%s\n' $comp
3601     done
3602 }
3603
3604 do_random(){
3605     action=$1
3606     shift
3607     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3608     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3609 }
3610
3611 for opt do
3612     optval="${opt#*=}"
3613     case "$opt" in
3614         --extra-ldflags=*)
3615             add_ldflags $optval
3616         ;;
3617         --extra-ldexeflags=*)
3618             add_ldexeflags $optval
3619         ;;
3620         --extra-ldlibflags=*)
3621             add_ldlibflags $optval
3622         ;;
3623         --extra-libs=*)
3624             add_extralibs $optval
3625         ;;
3626         --disable-devices)
3627             disable $INDEV_LIST $OUTDEV_LIST
3628         ;;
3629         --enable-debug=*)
3630             debuglevel="$optval"
3631         ;;
3632         --disable-programs)
3633             disable $PROGRAM_LIST
3634         ;;
3635         --disable-everything)
3636             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3637         ;;
3638         --disable-all)
3639             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3640             disable $LIBRARY_LIST $PROGRAM_LIST doc
3641             enable avutil
3642         ;;
3643         --enable-random|--disable-random)
3644             action=${opt%%-random}
3645             do_random ${action#--} $COMPONENT_LIST
3646         ;;
3647         --enable-random=*|--disable-random=*)
3648             action=${opt%%-random=*}
3649             do_random ${action#--} $optval
3650         ;;
3651         --enable-sdl)
3652             enable sdl2
3653         ;;
3654         --enable-*=*|--disable-*=*)
3655             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3656             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3657             eval list=\$$(toupper $thing)_LIST
3658             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3659             list=$(filter "$name" $list)
3660             [ "$list" = "" ] && warn "Option $opt did not match anything"
3661             $action $list
3662         ;;
3663         --enable-yasm|--disable-yasm)
3664             warn "The ${opt} option is only provided for compatibility and will be\n"\
3665                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3666             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3667         ;;
3668         --yasmexe=*)
3669             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3670                  "removed in the future. Use --x86asmexe instead."
3671             x86asmexe="$optval"
3672         ;;
3673         --enable-?*|--disable-?*)
3674             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3675             if is_in $option $COMPONENT_LIST; then
3676                 test $action = disable && action=unset
3677                 eval $action \$$(toupper ${option%s})_LIST
3678             elif is_in $option $CMDLINE_SELECT; then
3679                 $action $option
3680             else
3681                 die_unknown $opt
3682             fi
3683         ;;
3684         --list-*)
3685             NAME="${opt#--list-}"
3686             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3687             NAME=${NAME%s}
3688             eval show_list $NAME \$$(toupper $NAME)_LIST
3689         ;;
3690         --help|-h) show_help
3691         ;;
3692         --quiet|-q) quiet=yes
3693         ;;
3694         --fatal-warnings) enable fatal_warnings
3695         ;;
3696         --libfuzzer=*)
3697             libfuzzer_path="$optval"
3698         ;;
3699         *)
3700             optname="${opt%%=*}"
3701             optname="${optname#--}"
3702             optname=$(echo "$optname" | sed 's/-/_/g')
3703             if is_in $optname $CMDLINE_SET; then
3704                 eval $optname='$optval'
3705             elif is_in $optname $CMDLINE_APPEND; then
3706                 append $optname "$optval"
3707             else
3708                 die_unknown $opt
3709             fi
3710         ;;
3711     esac
3712 done
3713
3714 for e in $env; do
3715     eval "export $e"
3716 done
3717
3718 if disabled autodetect; then
3719
3720     # Unless iconv is explicitely disabled by the user, we still want to probe
3721     # for the iconv from the libc.
3722     disabled iconv || enable libc_iconv
3723
3724     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3725     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3726 fi
3727 # Mark specifically enabled, but normally autodetected libraries as requested.
3728 for lib in $AUTODETECT_LIBS; do
3729     enabled $lib && request $lib
3730 done
3731 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3732 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3733 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3734
3735 disabled logging && logfile=/dev/null
3736
3737 die_license_disabled() {
3738     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3739 }
3740
3741 die_license_disabled_gpl() {
3742     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3743 }
3744
3745 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3746 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3747
3748 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3749 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3750
3751 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3752
3753 # Disable all the library-specific components if the library itself
3754 # is disabled, see AVCODEC_LIST and following _LIST variables.
3755
3756 disable_components(){
3757     disabled ${1} && disable $(
3758         eval components="\$$(toupper ${1})_COMPONENTS"
3759         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3760     )
3761 }
3762
3763 map 'disable_components $v' $LIBRARY_LIST
3764
3765 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3766 set >> $logfile
3767
3768 test -n "$valgrind" && toolchain="valgrind-memcheck"
3769
3770 enabled ossfuzz && {
3771     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3772     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3773 }
3774
3775 case "$toolchain" in
3776     *-asan)
3777         cc_default="${toolchain%-asan}"
3778         add_cflags  -fsanitize=address
3779         add_ldflags -fsanitize=address
3780     ;;
3781     *-msan)
3782         cc_default="${toolchain%-msan}"
3783         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3784         add_ldflags -fsanitize=memory
3785     ;;
3786     *-tsan)
3787         cc_default="${toolchain%-tsan}"
3788         add_cflags  -fsanitize=thread -fPIE
3789         add_ldflags -fsanitize=thread -pie
3790         case "$toolchain" in
3791             gcc-tsan)
3792                 add_cflags  -fPIC
3793                 add_ldflags -fPIC
3794                 ;;
3795         esac
3796     ;;
3797     *-usan)
3798         cc_default="${toolchain%-usan}"
3799         add_cflags  -fsanitize=undefined
3800         add_ldflags -fsanitize=undefined
3801     ;;
3802     valgrind-*)
3803         target_exec_default="valgrind"
3804         case "$toolchain" in
3805             valgrind-massif)
3806                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3807                 ;;
3808             valgrind-memcheck)
3809                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3810                 ;;
3811         esac
3812     ;;
3813     msvc)
3814         # Check whether the current MSVC version needs the C99 converter.
3815         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3816         # support enough of C99 to build ffmpeg. Default to the new
3817         # behaviour if the regexp was unable to match anything, since this
3818         # successfully parses the version number of existing supported
3819         # versions that require the converter (MSVC 2010 and 2012).
3820         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3821         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3822             cc_default="cl"
3823             cxx_default="cl"
3824         else
3825             cc_default="c99wrap cl"
3826             cxx_default="c99wrap cl"
3827         fi
3828         ld_default="$source_path/compat/windows/mslink"
3829         nm_default="dumpbin -symbols"
3830         ar_default="lib"
3831         case "$arch" in
3832         arm*)
3833             as_default="armasm"
3834             ;;
3835         esac
3836         target_os_default="win32"
3837         # Use a relative path for TMPDIR. This makes sure all the
3838         # ffconf temp files are written with a relative path, avoiding
3839         # issues with msys/win32 path conversion for MSVC parameters
3840         # such as -Fo<file> or -out:<file>.
3841         TMPDIR=.
3842     ;;
3843     icl)
3844         cc_default="icl"
3845         ld_default="xilink"
3846         nm_default="dumpbin -symbols"
3847         ar_default="xilib"
3848         target_os_default="win32"
3849         TMPDIR=.
3850     ;;
3851     gcov)
3852         add_cflags  -fprofile-arcs -ftest-coverage
3853         add_ldflags -fprofile-arcs -ftest-coverage
3854     ;;
3855     llvm-cov)
3856         add_cflags -fprofile-arcs -ftest-coverage
3857         add_ldflags --coverage
3858     ;;
3859     hardened)
3860         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3861         add_cflags   -fno-strict-overflow -fstack-protector-all
3862         add_ldflags  -Wl,-z,relro -Wl,-z,now
3863         add_cflags   -fPIE
3864         add_ldexeflags -fPIE -pie
3865     ;;
3866     ?*)
3867         die "Unknown toolchain $toolchain"
3868     ;;
3869 esac
3870
3871 test -n "$cross_prefix" && enable cross_compile
3872
3873 if enabled cross_compile; then
3874     test -n "$arch" && test -n "$target_os" ||
3875         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3876 fi
3877
3878 ar_default="${cross_prefix}${ar_default}"
3879 cc_default="${cross_prefix}${cc_default}"
3880 cxx_default="${cross_prefix}${cxx_default}"
3881 nm_default="${cross_prefix}${nm_default}"
3882 pkg_config_default="${cross_prefix}${pkg_config_default}"
3883 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3884     ranlib_default="${cross_prefix}${ranlib_default} -D"
3885 else
3886     ranlib_default="${cross_prefix}${ranlib_default}"
3887 fi
3888 strip_default="${cross_prefix}${strip_default}"
3889 windres_default="${cross_prefix}${windres_default}"
3890
3891 sysinclude_default="${sysroot}/usr/include"
3892
3893 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3894     target_exec target_os x86asmexe nvcc
3895 enabled cross_compile || host_cc_default=$cc
3896 set_default host_cc
3897
3898 pkg_config_fail_message=""
3899 if ! $pkg_config --version >/dev/null 2>&1; then
3900     warn "$pkg_config not found, library detection may fail."
3901     pkg_config=false
3902 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3903     pkg_config_fail_message="
3904 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3905 fi
3906
3907 if test $doxygen != $doxygen_default && \
3908   ! $doxygen --version >/dev/null 2>&1; then
3909     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3910 fi
3911
3912 exesuf() {
3913     case $1 in
3914         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3915     esac
3916 }
3917
3918 EXESUF=$(exesuf $target_os)
3919 HOSTEXESUF=$(exesuf $host_os)
3920
3921 # set temporary file name
3922 : ${TMPDIR:=$TEMPDIR}
3923 : ${TMPDIR:=$TMP}
3924 : ${TMPDIR:=/tmp}
3925
3926 if [ -n "$tempprefix" ] ; then
3927     mktemp(){
3928         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3929         echo "$tmpname"
3930         mkdir "$tmpname"
3931     }
3932 elif ! check_cmd mktemp -u XXXXXX; then
3933     # simple replacement for missing mktemp
3934     # NOT SAFE FOR GENERAL USE
3935     mktemp(){
3936         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3937         echo "$tmpname"
3938         mkdir "$tmpname"
3939     }
3940 fi
3941
3942 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3943     die "Unable to create temporary directory in $TMPDIR."
3944
3945 tmpfile(){
3946     tmp="${FFTMPDIR}/test"$2
3947     (set -C; exec > $tmp) 2> /dev/null ||
3948         die "Unable to create temporary file in $FFTMPDIR."
3949     eval $1=$tmp
3950 }
3951
3952 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3953 trap 'exit 2' INT
3954
3955 tmpfile TMPASM .asm
3956 tmpfile TMPC   .c
3957 tmpfile TMPCPP .cpp
3958 tmpfile TMPE   $EXESUF
3959 tmpfile TMPH   .h
3960 tmpfile TMPM   .m
3961 tmpfile TMPO   .o
3962 tmpfile TMPS   .S
3963 tmpfile TMPSH  .sh
3964 tmpfile TMPV   .ver
3965
3966 unset -f mktemp
3967
3968 chmod +x $TMPE
3969
3970 # make sure we can execute files in $TMPDIR
3971 cat > $TMPSH 2>> $logfile <<EOF
3972 #! /bin/sh
3973 EOF
3974 chmod +x $TMPSH >> $logfile 2>&1
3975 if ! $TMPSH >> $logfile 2>&1; then
3976     cat <<EOF
3977 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3978 variable to another directory and make sure that it is not mounted noexec.
3979 EOF
3980     die "Sanity test failed."
3981 fi
3982
3983 armasm_flags(){
3984     for flag; do
3985         case $flag in
3986             # Filter out MSVC cl.exe options from cflags that shouldn't
3987             # be passed to gas-preprocessor
3988             -M[TD]*)                                            ;;
3989             *)                  echo $flag                      ;;
3990         esac
3991    done
3992 }
3993
3994 ccc_flags(){
3995     for flag; do
3996         case $flag in
3997             -std=c99)           echo -c99                       ;;
3998             -mcpu=*)            echo -arch ${flag#*=}           ;;
3999             -mieee)             echo -ieee                      ;;
4000             -O*|-fast)          echo $flag                      ;;
4001             -fno-math-errno)    echo -assume nomath_errno       ;;
4002             -g)                 echo -g3                        ;;
4003             -Wall)              echo -msg_enable level2         ;;
4004             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
4005             -Wl,*)              echo $flag                      ;;
4006             -f*|-W*)                                            ;;
4007             *)                  echo $flag                      ;;
4008         esac
4009    done
4010 }
4011
4012 cparser_flags(){
4013     for flag; do
4014         case $flag in
4015             -Wno-switch)             echo -Wno-switch-enum ;;
4016             -Wno-format-zero-length) ;;
4017             -Wdisabled-optimization) ;;
4018             -Wno-pointer-sign)       echo -Wno-other ;;
4019             *)                       echo $flag ;;
4020         esac
4021     done
4022 }
4023
4024 msvc_common_flags(){
4025     for flag; do
4026         case $flag in
4027             # In addition to specifying certain flags under the compiler
4028             # specific filters, they must be specified here as well or else the
4029             # generic catch all at the bottom will print the original flag.
4030             -Wall)                ;;
4031             -Wextra)              ;;
4032             -std=c99)             ;;
4033             # Common flags
4034             -fomit-frame-pointer) ;;
4035             -g)                   echo -Z7 ;;
4036             -fno-math-errno)      ;;
4037             -fno-common)          ;;
4038             -fno-signed-zeros)    ;;
4039             -fPIC)                ;;
4040             -mthumb)              ;;
4041             -march=*)             ;;
4042             -lz)                  echo zlib.lib ;;
4043             -lx264)               echo libx264.lib ;;
4044             -lstdc++)             ;;
4045             -l*)                  echo ${flag#-l}.lib ;;
4046             -LARGEADDRESSAWARE)   echo $flag ;;
4047             -L*)                  echo -libpath:${flag#-L} ;;
4048             *)                    echo $flag ;;
4049         esac
4050     done
4051 }
4052
4053 msvc_flags(){
4054     msvc_common_flags "$@"
4055     for flag; do
4056         case $flag in
4057             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4058                                        -wd4554 ;;
4059             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4060                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4061                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4062                                        -wd4307 \
4063                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4064         esac
4065     done
4066 }
4067
4068 icl_flags(){
4069     msvc_common_flags "$@"
4070     for flag; do
4071         case $flag in
4072             # Despite what Intel's documentation says -Wall, which is supported
4073             # on Windows, does enable remarks so disable them here.
4074             -Wall)                echo $flag -Qdiag-disable:remark ;;
4075             -std=c99)             echo -Qstd=c99 ;;
4076             -flto)                echo -ipo ;;
4077         esac
4078     done
4079 }
4080
4081 icc_flags(){
4082     for flag; do
4083         case $flag in
4084             -flto)                echo -ipo ;;
4085             *)                    echo $flag ;;
4086         esac
4087     done
4088 }
4089
4090 pgi_flags(){
4091     for flag; do
4092         case $flag in
4093             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4094             -fomit-frame-pointer) echo -Mnoframe ;;
4095             -g)                   echo -gopt ;;
4096             *)                    echo $flag ;;
4097         esac
4098     done
4099 }
4100
4101 suncc_flags(){
4102     for flag; do
4103         case $flag in
4104             -march=*|-mcpu=*)
4105                 case "${flag#*=}" in
4106                     native)                   echo -xtarget=native       ;;
4107                     v9|niagara)               echo -xarch=sparc          ;;
4108                     ultrasparc)               echo -xarch=sparcvis       ;;
4109                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4110                     i586|pentium)             echo -xchip=pentium        ;;
4111                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4112                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4113                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4114                     pentium4*)          echo -xtarget=pentium4           ;;
4115                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4116                     *-sse3)             echo -xarch=sse3                 ;;
4117                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4118                     bonnell)                   echo -xarch=ssse3         ;;
4119                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4120                     westmere)                  echo -xtarget=westmere    ;;
4121                     silvermont)                echo -xarch=sse4_2        ;;
4122                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4123                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4124                                                echo -xarch=avx           ;;
4125                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4126                     btver1)                    echo -xarch=amdsse4a      ;;
4127                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4128                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4129                     k8|opteron|athlon64|athlon-fx)
4130                                                echo -xarch=sse2a         ;;
4131                     athlon*)                   echo -xarch=pentium_proa  ;;
4132                 esac
4133                 ;;
4134             -std=c99)             echo -xc99              ;;
4135             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4136             -fPIC)                echo -KPIC -xcode=pic32 ;;
4137             -W*,*)                echo $flag              ;;
4138             -f*-*|-W*|-mimpure-text)                      ;;
4139             -shared)              echo -G                 ;;
4140             *)                    echo $flag              ;;
4141         esac
4142     done
4143 }
4144
4145 tms470_flags(){
4146     for flag; do
4147         case $flag in
4148             -march=*|-mcpu=*)
4149                 case "${flag#*=}" in
4150                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4151                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4152                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4153                     armv6*|arm11*)          echo -mv=6   ;;
4154                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4155                                             echo -mv=5e  ;;
4156                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4157                 esac
4158                 ;;
4159             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4160             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4161             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4162             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4163             -msoft-float)   echo --float_support=vfplib       ;;
4164             -O[0-3]|-mf=*)  echo $flag                        ;;
4165             -g)             echo -g -mn                       ;;
4166             -pds=*)         echo $flag                        ;;
4167             -D*|-I*)        echo $flag                        ;;
4168             --gcc|--abi=*)  echo $flag                        ;;
4169             -me)            echo $flag                        ;;
4170         esac
4171     done
4172 }
4173
4174 probe_cc(){
4175     pfx=$1
4176     _cc=$2
4177     first=$3
4178
4179     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4180     unset _ld_o _ldflags _ld_lib _ld_path
4181     unset _depflags _DEPCMD _DEPFLAGS
4182     _flags_filter=echo
4183
4184     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4185         true # no-op to avoid reading stdin in following checks
4186     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4187         _type=llvm_gcc
4188         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4189         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4190         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4191         _cflags_speed='-O3'
4192         _cflags_size='-Os'
4193     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4194         _type=gcc
4195         gcc_version=$($_cc --version | head -n1)
4196         gcc_basever=$($_cc -dumpversion)
4197         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4198         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4199         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4200         case $gcc_basever in
4201             2) ;;
4202             2.*) ;;
4203             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4204         esac
4205         if [ "$first" = true ]; then
4206             case $gcc_basever in
4207                 4.2*)
4208                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4209             esac
4210         fi
4211         _cflags_speed='-O3'
4212         _cflags_size='-Os'
4213     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4214         _type=icc
4215         _ident=$($_cc --version | head -n1)
4216         _depflags='-MMD'
4217         _cflags_speed='-O3'
4218         _cflags_size='-Os'
4219         _cflags_noopt='-O1'
4220         _flags_filter=icc_flags
4221     elif $_cc -v 2>&1 | grep -q xlc; then
4222         _type=xlc
4223         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4224         _cflags_speed='-O5'
4225         _cflags_size='-O5 -qcompact'
4226     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4227         _type=ccc
4228         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4229         _DEPFLAGS='-M'
4230         _cflags_speed='-fast'
4231         _cflags_size='-O1'
4232         _flags_filter=ccc_flags
4233     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4234         test -d "$sysroot" || die "No valid sysroot specified."
4235         _type=armcc
4236         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4237         armcc_conf="$PWD/armcc.conf"
4238         $_cc --arm_linux_configure                 \
4239              --arm_linux_config_file="$armcc_conf" \
4240              --configure_sysroot="$sysroot"        \
4241              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4242              die "Error creating armcc configuration file."
4243         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4244         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4245         as_default="${cross_prefix}gcc"
4246         _depflags='-MMD'
4247         _cflags_speed='-O3'
4248         _cflags_size='-Os'
4249     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4250         _type=tms470
4251         _ident=$($_cc -version | head -n1 | tr -s ' ')
4252         _flags='--gcc --abi=eabi -me'
4253         _cc_e='-ppl -fe=$@'
4254         _cc_o='-fe=$@'
4255         _depflags='-ppa -ppd=$(@:.o=.d)'
4256         _cflags_speed='-O3 -mf=5'
4257         _cflags_size='-O3 -mf=2'
4258         _flags_filter=tms470_flags
4259     elif $_cc -v 2>&1 | grep -q clang; then
4260         _type=clang
4261         _ident=$($_cc --version 2>/dev/null | head -n1)
4262         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4263         _cflags_speed='-O3'
4264         _cflags_size='-Oz'
4265     elif $_cc -V 2>&1 | grep -q Sun; then
4266         _type=suncc
4267         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4268         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4269         _DEPFLAGS='-xM1 -xc99'
4270         _ldflags='-std=c99'
4271         _cflags_speed='-O5'
4272         _cflags_size='-O5 -xspace'
4273         _flags_filter=suncc_flags
4274     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4275         _type=pathscale
4276         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4277         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4278         _cflags_speed='-O2'
4279         _cflags_size='-Os'
4280         _flags_filter='filter_out -Wdisabled-optimization'
4281     elif $_cc -v 2>&1 | grep -q Open64; then
4282         _type=open64
4283         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4284         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4285         _cflags_speed='-O2'
4286         _cflags_size='-Os'
4287         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4288     elif $_cc -V 2>&1 | grep -q Portland; then
4289         _type=pgi
4290         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4291         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4292         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4293         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4294         _cflags_noopt="-O"
4295         _flags_filter=pgi_flags
4296     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4297         _type=armasm
4298         _ident=$($_cc | head -n1)
4299         # 4509: "This form of conditional instruction is deprecated"
4300         _flags="-nologo -ignore 4509"
4301         _flags_filter=armasm_flags
4302     elif $_cc 2>&1 | grep -q Intel; then
4303         _type=icl
4304         _ident=$($_cc 2>&1 | head -n1)
4305         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4306         # Not only is O3 broken on 13.x+ but it is slower on all previous
4307         # versions (tested) as well.
4308         _cflags_speed="-O2"
4309         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4310         if $_cc 2>&1 | grep -q Linker; then
4311             _ld_o='-out:$@'
4312         else
4313             _ld_o='-Fe$@'
4314         fi
4315         _cc_o='-Fo$@'
4316         _cc_e='-P'
4317         _flags_filter=icl_flags
4318         _ld_lib='lib%.a'
4319         _ld_path='-libpath:'
4320         # -Qdiag-error to make icl error when seeing certain unknown arguments
4321         _flags='-nologo -Qdiag-error:4044,10157'
4322         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4323         # with MSVC which enables it by default.
4324         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4325         disable stripping
4326     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4327         # lld can emulate multiple different linkers; in ms link.exe mode,
4328         # the -? parameter gives the help output which contains an identifyable
4329         # string, while it gives an error in other modes.
4330         _type=lld-link
4331         # The link.exe mode doesn't have a switch for getting the version,
4332         # but we can force it back to gnu mode and get the version from there.
4333         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4334         _ld_o='-out:$@'
4335         _flags_filter=msvc_flags
4336         _ld_lib='lib%.a'
4337         _ld_path='-libpath:'
4338     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4339         _type=msvc
4340         _ident=$($_cc 2>&1 | head -n1)
4341         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4342         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4343         _cflags_speed="-O2"
4344         _cflags_size="-O1"
4345         _cflags_noopt="-O1"
4346         if $_cc -nologo- 2>&1 | grep -q Linker; then
4347             _ld_o='-out:$@'
4348         else
4349             _ld_o='-Fe$@'
4350         fi
4351         _cc_o='-Fo$@'
4352         _cc_e='-P -Fi$@'
4353         _flags_filter=msvc_flags
4354         _ld_lib='lib%.a'
4355         _ld_path='-libpath:'
4356         _flags='-nologo'
4357         disable stripping
4358     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4359         _type=cparser
4360         _ident=$($_cc --version | head -n1)
4361         _depflags='-MMD'
4362         _cflags_speed='-O4'
4363         _cflags_size='-O2'
4364         _flags_filter=cparser_flags
4365     fi
4366
4367     eval ${pfx}_type=\$_type
4368     eval ${pfx}_ident=\$_ident
4369 }
4370
4371 set_ccvars(){
4372     eval ${1}_C=\${_cc_c-\${${1}_C}}
4373     eval ${1}_E=\${_cc_e-\${${1}_E}}
4374     eval ${1}_O=\${_cc_o-\${${1}_O}}
4375
4376     if [ -n "$_depflags" ]; then
4377         eval ${1}_DEPFLAGS=\$_depflags
4378     else
4379         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4380         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4381         eval DEP${1}FLAGS=\$_flags
4382     fi
4383 }
4384
4385 probe_cc cc "$cc" "true"
4386 cflags_filter=$_flags_filter
4387 cflags_speed=$_cflags_speed
4388 cflags_size=$_cflags_size
4389 cflags_noopt=$_cflags_noopt
4390 add_cflags $_flags $_cflags
4391 cc_ldflags=$_ldflags
4392 set_ccvars CC
4393 set_ccvars CXX
4394
4395 probe_cc hostcc "$host_cc"
4396 host_cflags_filter=$_flags_filter
4397 host_cflags_speed=$_cflags_speed
4398 add_host_cflags  $_flags $_cflags
4399 set_ccvars HOSTCC
4400
4401 test -n "$cc_type" && enable $cc_type ||
4402     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4403
4404 : ${as_default:=$cc}
4405 : ${objcc_default:=$cc}
4406 : ${dep_cc_default:=$cc}
4407 : ${ld_default:=$cc}
4408 : ${host_ld_default:=$host_cc}
4409 set_default ar as objcc dep_cc ld ln_s host_ld windres
4410
4411 probe_cc as "$as"
4412 asflags_filter=$_flags_filter
4413 add_asflags $_flags $_cflags
4414 set_ccvars AS
4415
4416 probe_cc objcc "$objcc"
4417 objcflags_filter=$_flags_filter
4418 add_objcflags $_flags $_cflags
4419 set_ccvars OBJC
4420
4421 probe_cc ld "$ld"
4422 ldflags_filter=$_flags_filter
4423 add_ldflags $_flags $_ldflags
4424 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4425 LD_O=${_ld_o-$LD_O}
4426 LD_LIB=${_ld_lib-$LD_LIB}
4427 LD_PATH=${_ld_path-$LD_PATH}
4428
4429 probe_cc hostld "$host_ld"
4430 host_ldflags_filter=$_flags_filter
4431 add_host_ldflags $_flags $_ldflags
4432 HOSTLD_O=${_ld_o-$HOSTLD_O}
4433
4434 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4435     probe_cc depcc "$dep_cc"
4436     CCDEP=${_DEPCMD:-$DEPCMD}
4437     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4438     DEPCCFLAGS=$_flags
4439 fi
4440
4441 if $ar 2>&1 | grep -q Microsoft; then
4442     arflags="-nologo"
4443     ar_o='-out:$@'
4444 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4445     arflags="rq"
4446     ar_o='$@'
4447 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4448     arflags='-Xany -r -c'
4449     ar_o='$@'
4450 elif $ar 2>&1 | grep -q "\[D\] "; then
4451     arflags="rcD"
4452     ar_o='$@'
4453 else
4454     arflags="rc"
4455     ar_o='$@'
4456 fi
4457
4458 add_cflags $extra_cflags
4459 add_cxxflags $extra_cxxflags
4460 add_objcflags $extra_objcflags
4461 add_asflags $extra_cflags
4462
4463 if test -n "$sysroot"; then
4464     case "$cc_type" in
4465         gcc|llvm_gcc|clang)
4466             add_cppflags --sysroot="$sysroot"
4467             add_ldflags --sysroot="$sysroot"
4468 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4469             add_cppflags -isysroot "$sysroot"
4470             add_ldflags -isysroot "$sysroot"
4471         ;;
4472         tms470)
4473             add_cppflags -I"$sysinclude"
4474             add_ldflags  --sysroot="$sysroot"
4475         ;;
4476     esac
4477 fi
4478
4479 if test "$cpu" = host; then
4480     enabled cross_compile &&
4481         die "--cpu=host makes no sense when cross-compiling."
4482
4483     case "$cc_type" in
4484         gcc|llvm_gcc)
4485             check_native(){
4486                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4487                 sed -n "/cc1.*$1=/{
4488                             s/.*$1=\\([^ ]*\\).*/\\1/
4489                             p
4490                             q
4491                         }" $TMPE
4492             }
4493             cpu=$(check_native -march || check_native -mcpu)
4494         ;;
4495         clang)
4496             check_native(){
4497                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4498                 sed -n "/cc1.*-target-cpu /{
4499                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4500                             p
4501                             q
4502                         }" $TMPE
4503             }
4504             cpu=$(check_native -march)
4505         ;;
4506     esac
4507
4508     test "${cpu:-host}" = host &&
4509         die "--cpu=host not supported with compiler $cc"
4510 fi
4511
4512 # Deal with common $arch aliases
4513 case "$arch" in
4514     aarch64|arm64)
4515         arch="aarch64"
4516     ;;
4517     arm*|iPad*|iPhone*)
4518         arch="arm"
4519     ;;
4520     mips*|IP*)
4521         case "$arch" in
4522         *el)
4523             add_cppflags -EL
4524             add_ldflags -EL
4525         ;;
4526         *eb)
4527             add_cppflags -EB
4528             add_ldflags -EB
4529         ;;
4530         esac
4531         arch="mips"
4532     ;;
4533     parisc*|hppa*)
4534         arch="parisc"
4535     ;;
4536     "Power Macintosh"|ppc*|powerpc*)
4537         arch="ppc"
4538     ;;
4539     s390|s390x)
4540         arch="s390"
4541     ;;
4542     sh4|sh)
4543         arch="sh4"
4544     ;;
4545     sun4*|sparc*)
4546         arch="sparc"
4547     ;;
4548     tilegx|tile-gx)
4549         arch="tilegx"
4550     ;;
4551     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4552         arch="x86"
4553     ;;
4554 esac
4555
4556 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4557 enable $arch
4558
4559 # Add processor-specific flags
4560 if enabled aarch64; then
4561
4562     case $cpu in
4563         armv*)
4564             cpuflags="-march=$cpu"
4565         ;;
4566         *)
4567             cpuflags="-mcpu=$cpu"
4568         ;;
4569     esac
4570
4571 elif enabled alpha; then
4572
4573     cpuflags="-mcpu=$cpu"
4574
4575 elif enabled arm; then
4576
4577     check_arm_arch() {
4578         check_cpp_condition stddef.h \
4579             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4580             $cpuflags
4581     }
4582
4583     probe_arm_arch() {
4584         if   check_arm_arch 4;        then echo armv4
4585         elif check_arm_arch 4T;       then echo armv4t
4586         elif check_arm_arch 5;        then echo armv5
4587         elif check_arm_arch 5E;       then echo armv5e
4588         elif check_arm_arch 5T;       then echo armv5t
4589         elif check_arm_arch 5TE;      then echo armv5te
4590         elif check_arm_arch 5TEJ;     then echo armv5te
4591         elif check_arm_arch 6;        then echo armv6
4592         elif check_arm_arch 6J;       then echo armv6j
4593         elif check_arm_arch 6K;       then echo armv6k
4594         elif check_arm_arch 6Z;       then echo armv6z
4595         elif check_arm_arch 6ZK;      then echo armv6zk
4596         elif check_arm_arch 6T2;      then echo armv6t2
4597         elif check_arm_arch 7;        then echo armv7
4598         elif check_arm_arch 7A  7_A;  then echo armv7-a
4599         elif check_arm_arch 7S;       then echo armv7-a
4600         elif check_arm_arch 7R  7_R;  then echo armv7-r
4601         elif check_arm_arch 7M  7_M;  then echo armv7-m
4602         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4603         elif check_arm_arch 8A  8_A;  then echo armv8-a
4604         fi
4605     }
4606
4607     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4608
4609     case $cpu in
4610         armv*)
4611             cpuflags="-march=$cpu"
4612             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4613         ;;
4614         *)
4615             cpuflags="-mcpu=$cpu"
4616             case $cpu in
4617                 cortex-a*)                               subarch=armv7a  ;;
4618                 cortex-r*)                               subarch=armv7r  ;;
4619                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4620                 arm11*)                                  subarch=armv6   ;;
4621                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4622                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4623                 *)                             subarch=$(probe_arm_arch) ;;
4624             esac
4625         ;;
4626     esac
4627
4628     case "$subarch" in
4629         armv5t*)    enable fast_clz                ;;
4630         armv[6-8]*)
4631             enable fast_clz
4632             disabled fast_unaligned || enable fast_unaligned
4633             ;;
4634     esac
4635
4636 elif enabled avr32; then
4637
4638     case $cpu in
4639         ap7[02]0[0-2])
4640             subarch="avr32_ap"
4641             cpuflags="-mpart=$cpu"
4642         ;;
4643         ap)
4644             subarch="avr32_ap"
4645             cpuflags="-march=$cpu"
4646         ;;
4647         uc3[ab]*)
4648             subarch="avr32_uc"
4649             cpuflags="-mcpu=$cpu"
4650         ;;
4651         uc)
4652             subarch="avr32_uc"
4653             cpuflags="-march=$cpu"
4654         ;;
4655     esac
4656
4657 elif enabled bfin; then
4658
4659     cpuflags="-mcpu=$cpu"
4660
4661 elif enabled mips; then
4662
4663     cpuflags="-march=$cpu"
4664
4665     if [ "$cpu" != "generic" ]; then
4666         disable mips32r2
4667         disable mips32r5
4668         disable mips64r2
4669         disable mips32r6
4670         disable mips64r6
4671         disable loongson2
4672         disable loongson3
4673
4674         case $cpu in
4675             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4676                 enable mips32r2
4677                 disable msa
4678             ;;
4679             p5600|i6400|p6600)
4680                 disable mipsdsp
4681                 disable mipsdspr2
4682             ;;
4683             loongson*)
4684                 enable loongson2
4685                 enable loongson3
4686                 enable local_aligned_8 local_aligned_16 local_aligned_32
4687                 enable simd_align_16
4688                 enable fast_64bit
4689                 enable fast_clz
4690                 enable fast_cmov
4691                 enable fast_unaligned
4692                 disable aligned_stack
4693                 disable mipsfpu
4694                 disable mipsdsp
4695                 disable mipsdspr2
4696                 case $cpu in
4697                     loongson3*)
4698                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4699                     ;;
4700                     loongson2e)
4701                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4702                     ;;
4703                     loongson2f)
4704                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4705                     ;;
4706                 esac
4707             ;;
4708             *)
4709                 # Unknown CPU. Disable everything.
4710                 warn "unknown CPU. Disabling all MIPS optimizations."
4711                 disable mipsfpu
4712                 disable mipsdsp
4713                 disable mipsdspr2
4714                 disable msa
4715                 disable mmi
4716             ;;
4717         esac
4718
4719         case $cpu in
4720             24kc)
4721                 disable mipsfpu
4722                 disable mipsdsp
4723                 disable mipsdspr2
4724             ;;
4725             24kf*)
4726                 disable mipsdsp
4727                 disable mipsdspr2
4728             ;;
4729             24kec|34kc|1004kc)
4730                 disable mipsfpu
4731                 disable mipsdspr2
4732             ;;
4733             24kef*|34kf*|1004kf*)
4734                 disable mipsdspr2
4735             ;;
4736             74kc)
4737                 disable mipsfpu
4738             ;;
4739             p5600)
4740                 enable mips32r5
4741                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4742             ;;
4743             i6400)
4744                 enable mips64r6
4745                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4746             ;;
4747             p6600)
4748                 enable mips64r6
4749                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4750             ;;
4751         esac
4752     else
4753         # We do not disable anything. Is up to the user to disable the unwanted features.
4754         warn 'generic cpu selected'
4755     fi
4756
4757 elif enabled ppc; then
4758
4759     disable ldbrx
4760
4761     case $(tolower $cpu) in
4762         601|ppc601|powerpc601)
4763             cpuflags="-mcpu=601"
4764             disable altivec
4765         ;;
4766         603*|ppc603*|powerpc603*)
4767             cpuflags="-mcpu=603"
4768             disable altivec
4769         ;;
4770         604*|ppc604*|powerpc604*)
4771             cpuflags="-mcpu=604"
4772             disable altivec
4773         ;;
4774         g3|75*|ppc75*|powerpc75*)
4775             cpuflags="-mcpu=750"
4776             disable altivec
4777         ;;
4778         g4|745*|ppc745*|powerpc745*)
4779             cpuflags="-mcpu=7450"
4780             disable vsx
4781         ;;
4782         74*|ppc74*|powerpc74*)
4783             cpuflags="-mcpu=7400"
4784             disable vsx
4785         ;;
4786         g5|970|ppc970|powerpc970)
4787             cpuflags="-mcpu=970"
4788             disable vsx
4789         ;;
4790         power[3-6]*)
4791             cpuflags="-mcpu=$cpu"
4792             disable vsx
4793         ;;
4794         power[7-8]*)
4795             cpuflags="-mcpu=$cpu"
4796         ;;
4797         cell)
4798             cpuflags="-mcpu=cell"
4799             enable ldbrx
4800             disable vsx
4801         ;;
4802         e500mc)
4803             cpuflags="-mcpu=e500mc"
4804             disable altivec
4805         ;;
4806         e500v2)
4807             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4808             disable altivec
4809             disable dcbzl
4810         ;;
4811         e500)
4812             cpuflags="-mcpu=8540 -mhard-float"
4813             disable altivec
4814             disable dcbzl
4815         ;;
4816     esac
4817
4818 elif enabled sparc; then
4819
4820     case $cpu in
4821         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4822             cpuflags="-mcpu=$cpu"
4823         ;;
4824         ultrasparc*|niagara[234])
4825             cpuflags="-mcpu=$cpu"
4826         ;;
4827     esac
4828
4829 elif enabled x86; then
4830
4831     case $cpu in
4832         i[345]86|pentium)
4833             cpuflags="-march=$cpu"
4834             disable i686
4835             disable mmx
4836         ;;
4837         # targets that do NOT support nopl and conditional mov (cmov)
4838         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4839             cpuflags="-march=$cpu"
4840             disable i686
4841         ;;
4842         # targets that do support nopl and conditional mov (cmov)
4843         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4844         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4845         |amdfam10|barcelona|b[dt]ver*|znver*)
4846             cpuflags="-march=$cpu"
4847             enable i686
4848             enable fast_cmov
4849         ;;
4850         # targets that do support conditional mov but on which it's slow
4851         pentium4|pentium4m|prescott|nocona)
4852             cpuflags="-march=$cpu"
4853             enable i686
4854             disable fast_cmov
4855         ;;
4856     esac
4857
4858 fi
4859
4860 if [ "$cpu" != generic ]; then
4861     add_cflags  $cpuflags
4862     add_asflags $cpuflags
4863     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4864 fi
4865
4866 # compiler sanity check
4867 check_exec <<EOF
4868 int main(void){ return 0; }
4869 EOF
4870 if test "$?" != 0; then
4871     echo "$cc is unable to create an executable file."
4872     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4873         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4874         echo "Only do this if you know what cross compiling means."
4875     fi
4876     die "C compiler test failed."
4877 fi
4878
4879 add_cppflags -D_ISOC99_SOURCE
4880 add_cxxflags -D__STDC_CONSTANT_MACROS
4881 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4882
4883 # some compilers silently accept -std=c11, so we also need to check that the
4884 # version macro is defined properly
4885 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4886     add_cflags -std=c11 ||
4887     check_cflags -std=c99
4888
4889 check_cppflags -D_FILE_OFFSET_BITS=64
4890 check_cppflags -D_LARGEFILE_SOURCE
4891
4892 add_host_cppflags -D_ISOC99_SOURCE
4893 check_host_cflags -std=c99
4894 check_host_cflags -Wall
4895 check_host_cflags $host_cflags_speed
4896
4897 check_64bit(){
4898     arch32=$1
4899     arch64=$2
4900     expr=$3
4901     check_code cc "" "int test[2*($expr) - 1]" &&
4902         subarch=$arch64 || subarch=$arch32
4903 }
4904
4905 case "$arch" in
4906     aarch64|alpha|ia64)
4907         spic=$shared
4908     ;;
4909     mips)
4910         check_64bit mips mips64 '_MIPS_SIM > 1'
4911         spic=$shared
4912     ;;
4913     parisc)
4914         check_64bit parisc parisc64 'sizeof(void *) > 4'
4915         spic=$shared
4916     ;;
4917     ppc)
4918         check_64bit ppc ppc64 'sizeof(void *) > 4'
4919         spic=$shared
4920     ;;
4921     s390)
4922         check_64bit s390 s390x 'sizeof(void *) > 4'
4923         spic=$shared
4924     ;;
4925     sparc)
4926         check_64bit sparc sparc64 'sizeof(void *) > 4'
4927         spic=$shared
4928     ;;
4929     x86)
4930         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4931         # Treat x32 as x64 for now. Note it also needs spic=$shared
4932         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4933             subarch=x86_64
4934         if test "$subarch" = "x86_64"; then
4935             spic=$shared
4936         fi
4937     ;;
4938     ppc)
4939         check_cc <<EOF && subarch="ppc64"
4940         int test[(int)sizeof(char*) - 7];
4941 EOF
4942     ;;
4943 esac
4944
4945 enable $subarch
4946 enabled spic && enable_weak pic
4947
4948 enabled x86_64 && objformat=elf64 || objformat="elf32"
4949
4950 # OS specific
4951 case $target_os in
4952     aix)
4953         SHFLAGS=-shared
4954         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4955         enabled shared && add_ldflags -Wl,-brtl
4956         ;;
4957     android)
4958         disable symver
4959         enable section_data_rel_ro
4960         SLIB_INSTALL_NAME='$(SLIBNAME)'
4961         SLIB_INSTALL_LINKS=
4962         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4963         ;;
4964     haiku)
4965         prefix_default="/boot/common"
4966         network_extralibs="-lnetwork"
4967         host_extralibs=
4968         ;;
4969     sunos)
4970         SHFLAGS='-shared -Wl,-h,$$(@F)'
4971         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4972         network_extralibs="-lsocket -lnsl"
4973         add_cppflags -D__EXTENSIONS__
4974         # When using suncc to build, the Solaris linker will mark
4975         # an executable with each instruction set encountered by
4976         # the Solaris assembler.  As our libraries contain their own
4977         # guards for processor-specific code, instead suppress
4978         # generation of the HWCAPS ELF section on Solaris x86 only.
4979         enabled_all suncc x86 &&
4980             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4981             add_ldflags -Wl,-M,mapfile
4982         nm_default='nm -P -g'
4983         version_script='-M'
4984         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4985         ;;
4986     netbsd)
4987         disable symver
4988         oss_indev_extralibs="-lossaudio"
4989         oss_outdev_extralibs="-lossaudio"
4990         enabled gcc || check_ldflags -Wl,-zmuldefs
4991         ;;
4992     openbsd|bitrig)
4993         disable symver
4994         SHFLAGS='-shared'
4995         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4996         SLIB_INSTALL_LINKS=
4997         oss_indev_extralibs="-lossaudio"
4998         oss_outdev_extralibs="-lossaudio"
4999         ;;
5000     dragonfly)
5001         disable symver
5002         ;;
5003     freebsd)
5004         ;;
5005     bsd/os)
5006         add_extralibs -lpoll -lgnugetopt
5007         strip="strip -d"
5008         ;;
5009     darwin)
5010         enabled ppc && add_asflags -force_cpusubtype_ALL
5011         install_name_dir_default='$(SHLIBDIR)'
5012         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5013         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5014         strip="${strip} -x"
5015         add_ldflags -Wl,-dynamic,-search_paths_first
5016         check_cflags -Werror=partial-availability
5017         SLIBSUF=".dylib"
5018         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5019         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5020         enabled x86_64 && objformat="macho64" || objformat="macho32"
5021         enabled_any pic shared x86_64 ||
5022             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5023         check_header dispatch/dispatch.h &&
5024             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5025         version_script='-exported_symbols_list'
5026         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5027         ;;
5028     msys*)
5029         die "Native MSYS builds are discouraged, please use the MINGW environment."
5030         ;;
5031     mingw32*|mingw64*)
5032         if test $target_os = "mingw32ce"; then
5033             disable network
5034         else
5035             target_os=mingw32
5036         fi
5037         LIBTARGET=i386
5038         if enabled x86_64; then
5039             LIBTARGET="i386:x86-64"
5040         elif enabled arm; then
5041             LIBTARGET=arm-wince
5042         fi
5043         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5044         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5045         shlibdir_default="$bindir_default"
5046         SLIBPREF=""
5047         SLIBSUF=".dll"
5048         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5049         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5050         dlltool="${cross_prefix}dlltool"
5051         if check_cmd lib.exe -list; then
5052             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5053             if enabled x86_64; then
5054                 LIBTARGET=x64
5055             fi
5056         elif check_cmd $dlltool --version; then
5057             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5058         fi
5059         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5060         SLIB_INSTALL_LINKS=
5061         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5062         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5063         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
5064         enabled x86_64 && objformat="win64" || objformat="win32"
5065         ranlib=:
5066         enable dos_paths
5067         check_ldflags -Wl,--nxcompat,--dynamicbase
5068         # Lets work around some stupidity in binutils.
5069         # ld will strip relocations from executables even though we need them
5070         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5071         # however ld then forgets what the entry point should be (oops) so we
5072         # have to manually (re)set it.
5073         if enabled x86_32; then
5074             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5075         elif enabled x86_64; then
5076             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5077             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5078             # Set image base >4GB for extra entropy with HEASLR
5079             add_ldexeflags -Wl,--image-base,0x140000000
5080             append SHFLAGS -Wl,--image-base,0x180000000
5081         fi
5082         ;;
5083     win32|win64)
5084         disable symver
5085         if enabled shared; then
5086             # Link to the import library instead of the normal static library
5087             # for shared libs.
5088             LD_LIB='%.lib'
5089             # Cannot build both shared and static libs with MSVC or icl.
5090             disable static
5091         fi
5092         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5093         shlibdir_default="$bindir_default"
5094         SLIBPREF=""
5095         SLIBSUF=".dll"
5096         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5097         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5098         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5099         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5100         SLIB_INSTALL_LINKS=
5101         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5102         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5103         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5104         enabled x86_64 && objformat="win64" || objformat="win32"
5105         ranlib=:
5106         enable dos_paths
5107         ;;
5108     cygwin*)
5109         target_os=cygwin
5110         shlibdir_default="$bindir_default"
5111         SLIBPREF="cyg"
5112         SLIBSUF=".dll"
5113         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5114         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5115         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5116         SLIB_INSTALL_LINKS=
5117         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5118         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5119         enabled x86_64 && objformat="win64" || objformat="win32"
5120         enable dos_paths
5121         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5122         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5123         ;;
5124     *-dos|freedos|opendos)
5125         network_extralibs="-lsocket"
5126         objformat="coff"
5127         enable dos_paths
5128         add_cppflags -U__STRICT_ANSI__
5129         ;;
5130     linux)
5131         enable section_data_rel_ro
5132         enabled_any arm aarch64 && enable_weak linux_perf
5133         ;;
5134     irix*)
5135         target_os=irix
5136         ranlib="echo ignoring ranlib"
5137         ;;
5138     os/2*)
5139         strip="lxlite -CS"
5140         striptype=""
5141         objformat="aout"
5142         add_cppflags -D_GNU_SOURCE
5143         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5144         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5145         LIBSUF="_s.a"
5146         SLIBPREF=""
5147         SLIBSUF=".dll"
5148         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5149         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5150         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5151             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5152             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5153             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5154             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5155         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5156             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5157         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5158         SLIB_INSTALL_LINKS=
5159         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5160         enable dos_paths
5161         enable_weak os2threads
5162         ;;
5163     gnu/kfreebsd)
5164         add_cppflags -D_BSD_SOURCE
5165         ;;
5166     gnu)
5167         ;;
5168     qnx)
5169         add_cppflags -D_QNX_SOURCE
5170         network_extralibs="-lsocket"
5171         ;;
5172     symbian)
5173         SLIBSUF=".dll"
5174         enable dos_paths
5175         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5176         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5177         add_ldflags -Wl,--target1-abs,--no-undefined \
5178                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5179                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5180         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5181                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5182                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5183         ;;
5184     osf1)
5185         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5186         ;;
5187     minix)
5188         ;;
5189     none)
5190         ;;
5191     *)
5192         die "Unknown OS '$target_os'."
5193         ;;
5194 esac
5195
5196 # test if creating links works
5197 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5198 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5199 mkdir "$link_dest"
5200 $ln_s "$link_dest" "$link_name"
5201 touch "$link_dest/test_file"
5202 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5203     # create link to source path
5204     [ -e src ] && rm src
5205     $ln_s "$source_path" src
5206     source_link=src
5207 else
5208     # creating directory links doesn't work
5209     # fall back to using the full source path
5210     source_link="$source_path"
5211 fi
5212 # cleanup
5213 rm -r "$link_dest"
5214 rm -r "$link_name"
5215
5216 # determine libc flavour
5217
5218 probe_libc(){
5219     pfx=$1
5220     pfx_no_=${pfx%_}
5221     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5222     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5223         eval ${pfx}libc_type=uclibc
5224         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5225     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5226         eval ${pfx}libc_type=glibc
5227         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5228     # MinGW headers can be installed on Cygwin, so check for newlib first.
5229     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5230         eval ${pfx}libc_type=newlib
5231         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5232     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5233     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5234         eval ${pfx}libc_type=mingw64
5235         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5236             add_compat msvcrt/snprintf.o
5237             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5238         fi
5239         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5240         eval test \$${pfx_no_}cc_type = "gcc" &&
5241             add_${pfx}cppflags -D__printf__=__gnu_printf__
5242     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5243          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5244         eval ${pfx}libc_type=mingw32
5245         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5246             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5247             die "ERROR: MinGW32 runtime version must be >= 3.15."
5248         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5249         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5250             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5251         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5252             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5253         eval test \$${pfx_no_}cc_type = "gcc" &&
5254             add_${pfx}cppflags -D__printf__=__gnu_printf__
5255     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5256         eval ${pfx}libc_type=msvcrt
5257         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5258             if [ "$pfx" = host_ ]; then
5259                 add_host_cppflags -Dsnprintf=_snprintf
5260             else
5261                 add_compat strtod.o strtod=avpriv_strtod
5262                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5263                                              _snprintf=avpriv_snprintf  \
5264                                              vsnprintf=avpriv_vsnprintf
5265             fi
5266         fi
5267         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5268         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5269         # 0x601 by default unless something else is set by the user.
5270         # This can easily lead to us detecting functions only present
5271         # in such new versions and producing binaries requiring windows 7.0.
5272         # Therefore explicitly set the default to XP unless the user has
5273         # set something else on the command line.
5274         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5275         # family. For these cases, configure is free to use any functions
5276         # found in the SDK headers by default. (Alternatively, we could force
5277         # _WIN32_WINNT to 0x0602 in that case.)
5278         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5279             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5280 #ifdef WINAPI_FAMILY
5281 #include <winapifamily.h>
5282 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5283 #error not desktop
5284 #endif
5285 #endif
5286 EOF
5287         if [ "$pfx" = "" ]; then
5288             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5289             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5290         fi
5291     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5292         eval ${pfx}libc_type=klibc
5293     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5294         eval ${pfx}libc_type=bionic
5295     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5296         eval ${pfx}libc_type=solaris
5297         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5298     fi
5299     check_${pfx}cc <<EOF
5300 #include <time.h>
5301 void *v = localtime_r;
5302 EOF
5303 test "$?" != 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
5304 #include <time.h>
5305 void *v = localtime_r;
5306 EOF
5307
5308 }
5309
5310 probe_libc
5311 test -n "$libc_type" && enable libc_$libc_type
5312 probe_libc host_
5313 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5314
5315 # hacks for compiler/libc/os combinations
5316
5317 case $libc_type in
5318     bionic)
5319         add_compat strtod.o strtod=avpriv_strtod
5320         ;;
5321     glibc)
5322         if enabled tms470; then
5323             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5324             add_cppflags -D__USER_LABEL_PREFIX__=
5325             add_cppflags -D__builtin_memset=memset
5326             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5327             add_cflags   -pds=48    # incompatible redefinition of macro
5328         elif enabled ccc; then
5329             add_ldflags -Wl,-z,now  # calls to libots crash without this
5330         fi
5331         ;;
5332 esac
5333
5334 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5335     add_cppflags '-I\$(SRC_PATH)/compat/float'
5336
5337 esc(){
5338     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5339 }
5340
5341 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5342
5343 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5344
5345 set_default libdir
5346 : ${shlibdir_default:="$libdir"}
5347 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5348
5349 set_default $PATHS_LIST
5350 set_default nm
5351
5352 # we need to build at least one lib type
5353 if ! enabled_any static shared; then
5354     cat <<EOF
5355 At least one library type must be built.
5356 Specify --enable-static to build the static libraries or --enable-shared to
5357 build the shared libraries as well. To only build the shared libraries specify
5358 --disable-static in addition to --enable-shared.
5359 EOF
5360     exit 1
5361 fi
5362
5363 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5364
5365 enable_weak_pic() {
5366     disabled pic && return
5367     enable pic
5368     add_cppflags -DPIC
5369     case "$target_os" in
5370     mingw*|cygwin*)
5371         ;;
5372     *)
5373         add_cflags -fPIC
5374         ;;
5375     esac
5376     add_asflags  -fPIC
5377 }
5378
5379 enabled pic && enable_weak_pic
5380
5381 check_cc <<EOF || die "Symbol mangling check failed."
5382 int ff_extern;
5383 EOF
5384 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5385 extern_prefix=${sym%%ff_extern*}
5386
5387 check_inline_asm inline_asm '"" ::'
5388
5389 _restrict=
5390 for restrict_keyword in restrict __restrict__ __restrict; do
5391     check_cc <<EOF && _restrict=$restrict_keyword && break
5392 void foo(char * $restrict_keyword p);
5393 EOF
5394 done
5395
5396 check_cc <<EOF && enable pragma_deprecated
5397 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5398 EOF
5399
5400 check_cc <<EOF && enable attribute_packed
5401 struct { int x; } __attribute__((packed)) x;
5402 EOF
5403
5404 check_cc <<EOF && enable attribute_may_alias
5405 union { int x; } __attribute__((may_alias)) x;
5406 EOF
5407
5408 check_cc <<EOF || die "endian test failed"
5409 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5410 EOF
5411 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5412
5413 check_cc <<EOF && enable const_nan
5414 #include <math.h>
5415 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5416 EOF
5417
5418 if ! enabled ppc64 || enabled bigendian; then
5419     disable vsx
5420 fi
5421
5422 check_gas() {
5423     log "check_gas using '$as' as AS"
5424     # :vararg is used on aarch64, arm and ppc altivec
5425     check_as <<EOF || return 1
5426 .macro m n, y:vararg=0
5427 \n: .int \y
5428 .endm
5429 m x
5430 EOF
5431     # .altmacro is only used in arm asm
5432     ! enabled arm || check_as <<EOF || return 1
5433 .altmacro
5434 EOF
5435     enable gnu_as
5436     return 0
5437 }
5438
5439 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5440     nogas=:
5441     enabled_any arm aarch64 && nogas=die
5442     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5443     as_noop=-v
5444
5445     case $as_type in
5446         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5447         gcc)  gaspp_as_type=gas ;;
5448         *)    gaspp_as_type=$as_type ;;
5449     esac
5450
5451     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5452
5453     test "${as#*gas-preprocessor.pl}" != "$as" ||
5454     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5455         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5456
5457     if ! check_gas ; then
5458         as=${gas:=$as}
5459         check_gas || \
5460             $nogas "GNU assembler not found, install/update gas-preprocessor"
5461     fi
5462
5463     check_as <<EOF && enable as_func
5464 .func test
5465 .endfunc
5466 EOF
5467 fi
5468
5469 check_inline_asm inline_asm_labels '"1:\n"'
5470
5471 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5472
5473 if enabled aarch64; then
5474     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5475     # internal assembler in clang 3.3 does not support this instruction
5476     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5477     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5478
5479     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5480
5481 elif enabled alpha; then
5482
5483     check_cflags -mieee
5484
5485 elif enabled arm; then
5486
5487     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5488
5489     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5490 float func(float a, float b){ return a+b; }
5491 EOF
5492
5493     enabled thumb && check_cflags -mthumb || check_cflags -marm
5494
5495     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5496         enable vfp_args
5497     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5498         enable vfp_args
5499     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5500         case "${cross_prefix:-$cc}" in
5501             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5502             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5503 __asm__ (".eabi_attribute 28, 1");
5504 int main(void) { return 0; }
5505 EOF
5506         esac
5507         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5508     fi
5509
5510     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5511     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5512     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5513     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5514     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5515     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5516     enabled setend  && check_insn setend  'setend be'
5517
5518     [ $target_os = linux ] || [ $target_os = android ] ||
5519         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5520             $ARCH_EXT_LIST_ARM
5521
5522     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5523
5524     check_as <<EOF && enable as_dn_directive
5525 ra .dn d0.i16
5526 .unreq ra
5527 EOF
5528     check_as <<EOF && enable as_fpu_directive
5529 .fpu neon
5530 EOF
5531
5532     # llvm's integrated assembler supports .object_arch from llvm 3.5
5533     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5534         check_as <<EOF && enable as_object_arch
5535 .object_arch armv4
5536 EOF
5537
5538     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5539
5540 elif enabled mips; then
5541
5542     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5543     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5544     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5545
5546     # Enable minimum ISA based on selected options
5547     if enabled mips64; then
5548         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5549         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5550         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5551     else
5552         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5553         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5554         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5555         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5556     fi
5557
5558     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5559     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5560     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5561     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5562     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5563
5564     if enabled bigendian && enabled msa; then
5565         disable msa
5566     fi
5567
5568 elif enabled parisc; then
5569
5570     if enabled gcc; then
5571         case $($cc -dumpversion) in
5572             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5573         esac
5574     fi
5575
5576 elif enabled ppc; then
5577
5578     enable local_aligned_8 local_aligned_16 local_aligned_32
5579
5580     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5581     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5582     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5583     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5584
5585     # AltiVec flags: The FSF version of GCC differs from the Apple version
5586     if enabled altivec; then
5587         check_cflags -maltivec -mabi=altivec &&
5588         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5589         check_cflags -faltivec
5590
5591         # check if our compiler supports Motorola AltiVec C API
5592         check_cc <<EOF || disable altivec
5593 $inc_altivec_h
5594 int main(void) {
5595     vector signed int v1 = (vector signed int) { 0 };
5596     vector signed int v2 = (vector signed int) { 1 };
5597     v1 = vec_add(v1, v2);
5598     return 0;
5599 }
5600 EOF
5601
5602         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5603     fi
5604
5605     if enabled vsx; then
5606         check_cflags -mvsx &&
5607         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5608     fi
5609
5610     if enabled power8; then
5611         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5612     fi
5613
5614 elif enabled x86; then
5615
5616     check_builtin rdtsc    intrin.h   "__rdtsc()"
5617     check_builtin mm_empty mmintrin.h "_mm_empty()"
5618
5619     enable local_aligned_8 local_aligned_16 local_aligned_32
5620
5621     # check whether EBP is available on x86
5622     # As 'i' is stored on the stack, this program will crash
5623     # if the base pointer is used to access it because the
5624     # base pointer is cleared in the inline assembly code.
5625     check_exec_crash <<EOF && enable ebp_available
5626 volatile int i=0;
5627 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5628 return i;
5629 EOF
5630
5631     # check whether EBX is available on x86
5632     check_inline_asm ebx_available '""::"b"(0)' &&
5633         check_inline_asm ebx_available '"":::"%ebx"'
5634
5635     # check whether xmm clobbers are supported
5636     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5637
5638     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5639         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5640
5641     # check whether binutils is new enough to compile SSSE3/MMXEXT
5642     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5643     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5644
5645     probe_x86asm(){
5646         x86asmexe_probe=$1
5647         if check_cmd $x86asmexe_probe -v; then
5648             x86asmexe=$x86asmexe_probe
5649             x86asm_type=nasm
5650             x86asm_debug="-g -F dwarf"
5651         elif check_cmd $x86asmexe_probe --version; then
5652             x86asmexe=$x86asmexe_probe
5653             x86asm_type=yasm
5654             x86asm_debug="-g dwarf2"
5655         fi
5656         check_x86asm "movbe ecx, [5]" && enable x86asm
5657     }
5658
5659     if ! disabled_any asm mmx x86asm; then
5660         disable x86asm
5661         for program in $x86asmexe nasm yasm; do
5662             probe_x86asm $program && break
5663         done
5664         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5665         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5666         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5667         X86ASMFLAGS="-f $objformat"
5668         enabled pic               && append X86ASMFLAGS "-DPIC"
5669         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5670         case "$objformat" in
5671             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5672         esac
5673
5674         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5675         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5676         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5677         check_x86asm "CPU amdnop" || disable cpunop
5678     fi
5679
5680     case "$cpu" in
5681         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5682             disable fast_clz
5683         ;;
5684     esac
5685
5686 fi
5687
5688 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5689
5690 check_ldflags -Wl,--as-needed
5691 check_ldflags -Wl,-z,noexecstack
5692
5693 if ! disabled network; then
5694     check_func getaddrinfo $network_extralibs
5695     check_func inet_aton $network_extralibs
5696
5697     check_type netdb.h "struct addrinfo"
5698     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5699     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5700     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5701     check_type poll.h "struct pollfd"
5702     check_type netinet/sctp.h "struct sctp_event_subscribe"
5703     check_struct "sys/socket.h" "struct msghdr" msg_flags
5704     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5705     check_type netinet/in.h "struct sockaddr_in6"
5706     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5707     check_type "sys/types.h sys/socket.h" socklen_t
5708
5709     # Prefer arpa/inet.h over winsock2
5710     if check_header arpa/inet.h ; then
5711         check_func closesocket
5712     elif check_header winsock2.h ; then
5713         check_func_headers winsock2.h closesocket -lws2 &&
5714             network_extralibs="-lws2" ||
5715         { check_func_headers winsock2.h closesocket -lws2_32 &&
5716             network_extralibs="-lws2_32"; } || disable winsock2_h network
5717         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5718
5719         check_type ws2tcpip.h socklen_t
5720         check_type ws2tcpip.h "struct addrinfo"
5721         check_type ws2tcpip.h "struct group_source_req"
5722         check_type ws2tcpip.h "struct ip_mreq_source"
5723         check_type ws2tcpip.h "struct ipv6_mreq"
5724         check_type winsock2.h "struct pollfd"
5725         check_struct winsock2.h "struct sockaddr" sa_len
5726         check_type ws2tcpip.h "struct sockaddr_in6"
5727         check_type ws2tcpip.h "struct sockaddr_storage"
5728     else
5729         disable network
5730     fi
5731 fi
5732
5733 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5734 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5735 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5736 check_builtin sarestart signal.h "SA_RESTART"
5737 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5738 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5739 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5740 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5741
5742 case "$custom_allocator" in
5743     jemalloc)
5744         # jemalloc by default does not use a prefix
5745         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5746     ;;
5747     tcmalloc)
5748         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5749         malloc_prefix=tc_
5750     ;;
5751 esac
5752
5753 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5754 check_func  ${malloc_prefix}memalign            && enable memalign
5755 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5756
5757 check_func  access
5758 check_func_headers stdlib.h arc4random
5759 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5760 check_func  fcntl
5761 check_func  fork
5762 check_func  gethrtime
5763 check_func  getopt
5764 check_func  getrusage
5765 check_func  gettimeofday
5766 check_func  isatty
5767 check_func  mach_absolute_time
5768 check_func  mkstemp
5769 check_func  mmap
5770 check_func  mprotect
5771 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5772 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5773 check_func  sched_getaffinity
5774 check_func  setrlimit
5775 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5776 check_func  strerror_r
5777 check_func  sysconf
5778 check_func  sysctl
5779 check_func  usleep
5780
5781 check_func_headers conio.h kbhit
5782 check_func_headers io.h setmode
5783 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5784 check_func_headers stdlib.h getenv
5785 check_func_headers sys/stat.h lstat
5786
5787 check_func_headers windows.h GetProcessAffinityMask
5788 check_func_headers windows.h GetProcessTimes
5789 check_func_headers windows.h GetSystemTimeAsFileTime
5790 check_func_headers windows.h LoadLibrary
5791 check_func_headers windows.h MapViewOfFile
5792 check_func_headers windows.h PeekNamedPipe
5793 check_func_headers windows.h SetConsoleTextAttribute
5794 check_func_headers windows.h SetConsoleCtrlHandler
5795 check_func_headers windows.h Sleep
5796 check_func_headers windows.h VirtualAlloc
5797 check_struct windows.h "CONDITION_VARIABLE" Ptr
5798 check_func_headers glob.h glob
5799 enabled xlib &&
5800     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5801
5802 check_header d3d11.h
5803 check_header direct.h
5804 check_header dirent.h
5805 check_header dlfcn.h
5806 check_header dxgidebug.h
5807 check_header dxva.h
5808 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5809 check_header io.h
5810 check_header libcrystalhd/libcrystalhd_if.h
5811 check_header mach/mach_time.h
5812 check_header malloc.h
5813 check_header net/udplite.h
5814 check_header poll.h
5815 check_header sys/mman.h
5816 check_header sys/param.h
5817 check_header sys/resource.h
5818 check_header sys/select.h
5819 check_header sys/time.h
5820 check_header sys/un.h
5821 check_header termios.h
5822 check_header unistd.h
5823 check_header valgrind/valgrind.h
5824 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5825 check_header windows.h
5826 check_header X11/extensions/XvMClib.h
5827 check_header asm/types.h
5828
5829 # it seems there are versions of clang in some distros that try to use the
5830 # gcc headers, which explodes for stdatomic
5831 # so we also check that atomics actually work here
5832 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5833
5834 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5835 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5836 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5837 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5838
5839 enabled appkit       && check_apple_framework AppKit
5840 enabled audiotoolbox && check_apple_framework AudioToolbox
5841 enabled avfoundation && check_apple_framework AVFoundation
5842 enabled coreimage    && check_apple_framework CoreImage
5843 enabled videotoolbox && check_apple_framework VideoToolbox
5844
5845 check_apple_framework CoreFoundation
5846 check_apple_framework CoreMedia
5847 check_apple_framework CoreVideo
5848
5849 enabled avfoundation && {
5850     disable coregraphics applicationservices
5851     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5852     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5853
5854 enabled videotoolbox && {
5855     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5856     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5857 }
5858
5859 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5860
5861 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5862 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5863 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5864 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5865 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5866
5867 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5868 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5869 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5870 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5871 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5872 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5873 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5874 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5875 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5876
5877 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5878
5879 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5880
5881 if ! disabled w32threads && ! enabled pthreads; then
5882     check_func_headers "windows.h process.h" _beginthreadex &&
5883         enable w32threads || disable w32threads
5884     if ! enabled w32threads && enabled winrt; then
5885         check_func_headers "windows.h" CreateThread &&
5886             enable w32threads || disable w32threads
5887     fi
5888 fi
5889
5890 # check for some common methods of building with pthread support
5891 # do this before the optional library checks as some of them require pthreads
5892 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5893     if check_lib pthreads pthread.h pthread_join   -pthread &&
5894        check_lib pthreads pthread.h pthread_create -pthread; then
5895         add_cflags -pthread
5896     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5897          check_lib pthreads pthread.h pthread_create -pthreads; then
5898         add_cflags -pthreads
5899     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5900          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5901         add_cflags -ldl -pthread
5902     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5903          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5904         :
5905     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5906          check_lib pthreads pthread.h pthread_create -lpthread; then
5907         :
5908     elif check_func pthread_join && check_func pthread_create; then
5909         enable pthreads
5910     fi
5911     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5912 fi
5913
5914
5915 if enabled pthreads; then
5916   check_func pthread_cancel $pthreads_extralibs
5917 fi
5918
5919 enabled pthreads &&
5920     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5921
5922 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5923 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5924 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5925
5926 # On some systems dynamic loading requires no extra linker flags
5927 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5928
5929 check_lib libm math.h sin -lm
5930
5931 atan2f_args=2
5932 copysign_args=2
5933 hypot_args=2
5934 ldexpf_args=2
5935 powf_args=2
5936
5937 for func in $MATH_FUNCS; do
5938     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5939 done
5940
5941 for func in $COMPLEX_FUNCS; do
5942     eval check_complexfunc $func \${${func}_args:-1}
5943 done
5944
5945 # these are off by default, so fail if requested and not available
5946 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5947 enabled cuvid             && { enabled cuda ||
5948                                die "ERROR: CUVID requires CUDA"; }
5949 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5950 enabled decklink          && { require_header DeckLinkAPI.h &&
5951                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5952 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5953 enabled frei0r            && require_header frei0r.h
5954 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5955 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5956 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5957 enabled ladspa            && require_header ladspa.h
5958 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5959 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5960 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5961 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5962 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5963                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5964                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5965 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5966 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5967 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5968 enabled libfdk_aac        && { use_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5969                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5970                                  warn "using libfdk without pkg-config"; } }
5971 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"
5972 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5973 enabled fontconfig        && enable libfontconfig
5974 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5975 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5976 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5977 enabled libgme            && { use_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5978                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5979 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5980                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5981                                done || die "ERROR: libgsm not found"; }
5982 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5983 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5984 # While it may appear that require is being used as a pkg-config
5985 # fallback for libmfx, it is actually being used to detect a different
5986 # installation route altogether.  If libmfx is installed via the Intel
5987 # Media SDK or Intel Media Server Studio, these don't come with
5988 # pkg-config support.  Instead, users should make sure that the build
5989 # can find the libraries and headers through other means.
5990 enabled libmfx            && { use_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5991                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5992 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5993 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5994 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5995 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5996                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5997                                die "ERROR: libnpp not found"; }
5998 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5999 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6000 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6001                                { use_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6002                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6003                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6004 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6005 enabled libopenjpeg       && { use_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6006                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6007 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6008 enabled libopus           && {
6009     enabled libopus_decoder && {
6010         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6011     }
6012     enabled libopus_encoder && {
6013         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6014     }
6015 }
6016 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6017 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6018 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6019 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6020 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6021 enabled libsmbclient      && { use_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6022                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6023 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6024 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6025 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6026 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
6027 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6028 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6029 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6030                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6031                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6032 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6033 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6034 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
6035 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6036 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6037                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6038
6039 enabled libvpx            && {
6040     enabled libvpx_vp8_decoder && {
6041         use_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6042             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
6043                 die "ERROR: libvpx decoder version must be >=0.9.1";
6044     }
6045     enabled libvpx_vp8_encoder && {
6046         use_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6047             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
6048                 die "ERROR: libvpx encoder version must be >=0.9.7";
6049     }
6050     enabled libvpx_vp9_decoder && {
6051         use_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6052             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
6053     }
6054     enabled libvpx_vp9_encoder && {
6055         use_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6056             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6057     }
6058     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6059         die "libvpx enabled but no supported decoders found"
6060     fi
6061 }
6062
6063 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6064 enabled libwebp           && {
6065     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6066     enabled libwebp_anim_encoder && use_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6067 enabled libx264           && { use_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6068                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6069                                  warn "using libx264 without pkg-config"; } } &&
6070                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6071                              { check_cpp_condition x264.h "X264_MPEG2" &&
6072                                enable libx262; }
6073 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6074                              require_cpp_condition x265.h "X265_BUILD >= 68"
6075 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6076 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6077 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
6078 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6079 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6080                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6081                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6082 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6083 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6084 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6085                                { ! enabled cross_compile &&
6086                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6087                                  add_ldflags -L/opt/vc/lib/ &&
6088                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6089                                die "ERROR: mmal not found" &&
6090                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6091 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6092                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6093                                die "ERROR: openal not found"; } &&
6094                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6095                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6096 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6097                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6098                                die "ERROR: opencl not found"; } &&
6099                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6100                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6101                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6102 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6103                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6104                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6105                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6106                                die "ERROR: opengl not found."
6107                              }
6108 enabled omx               && require_header OMX_Core.h
6109 enabled omx_rpi           && { check_header OMX_Core.h ||
6110                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6111                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6112 enabled openssl           && { use_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6113                                use_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6114                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6115                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6116                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6117                                die "ERROR: openssl not found"; }
6118 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
6119                                  die "ERROR : Rockchip MPP was not found."; } &&
6120                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
6121                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
6122                                { enabled libdrm ||
6123                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6124                              }
6125
6126 if enabled gcrypt; then
6127     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6128     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6129         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6130         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6131         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6132             die "ERROR: gcrypt not found"
6133         add_cflags $gcrypt_cflags
6134     else
6135         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6136     fi
6137 fi
6138
6139 if enabled sdl2; then
6140     SDL2_CONFIG="${cross_prefix}sdl2-config"
6141     if check_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6142         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6143             disable sdl2
6144     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6145         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6146         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6147         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6148         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6149         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6150             enable sdl2
6151     fi
6152     if test $target_os = "mingw32"; then
6153         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6154     fi
6155 fi
6156
6157 if enabled decklink; then
6158     case $target_os in
6159         mingw32*|mingw64*|win32|win64)
6160             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6161             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6162             ;;
6163     esac
6164 fi
6165
6166 enabled securetransport &&
6167     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6168     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6169         disable securetransport
6170
6171 enabled schannel &&
6172     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6173     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6174     schannel_extralibs="-lsecur32" ||
6175         disable schannel
6176
6177 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6178 enabled makeinfo \
6179     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6180     && enable makeinfo_html || disable makeinfo_html
6181 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6182 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6183 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6184 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6185
6186 # check V4L2 codecs available in the API
6187 check_header linux/fb.h
6188 check_header linux/videodev2.h
6189 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6190 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6191 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6192 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6193 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6194 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6195 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6196 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6197 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6198 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6199 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6200
6201 check_header sys/videoio.h
6202 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6203
6204 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6205 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6206 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6207 # w32api 3.12 had it defined wrong
6208 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6209
6210 check_type "dshow.h" IBaseFilter
6211
6212 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6213 { check_header dev/bktr/ioctl_meteor.h &&
6214   check_header dev/bktr/ioctl_bt848.h; } ||
6215 { check_header machine/ioctl_meteor.h &&
6216   check_header machine/ioctl_bt848.h; } ||
6217 { check_header dev/video/meteor/ioctl_meteor.h &&
6218   check_header dev/video/bktr/ioctl_bt848.h; } ||
6219 check_header dev/ic/bt8xx.h
6220
6221 if check_struct sys/soundcard.h audio_buf_info bytes; then
6222     enable_safe sys/soundcard.h
6223 else
6224     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6225     #include <sys/soundcard.h>
6226     audio_buf_info abc;
6227 EOF
6228 fi
6229 check_header soundcard.h
6230
6231 enabled alsa && use_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6232     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6233
6234 if enabled libjack; then
6235     check_pkg_config libjack jack jack/jack.h jack_port_get_latency_range ||
6236     require_pkg_config libjack jack jack/jack.h jack_client_open
6237 fi
6238
6239 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6240
6241 if enabled libcdio; then
6242     use_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6243     use_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6244     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6245     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6246     die "ERROR: No usable libcdio/cdparanoia found"
6247 fi
6248
6249 enabled libxcb && use_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6250     disable libxcb_shm libxcb_shape libxcb_xfixes
6251
6252 if enabled libxcb; then
6253     enabled libxcb_shm    && use_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6254     enabled libxcb_shape  && use_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6255     enabled libxcb_xfixes && use_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6256 fi
6257
6258 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6259
6260 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6261 # the desktop api partition
6262 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6263 #ifdef WINAPI_FAMILY
6264 #include <winapifamily.h>
6265 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6266 #error desktop, not uwp
6267 #else
6268 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6269 #endif
6270 #else
6271 #error no family set
6272 #endif
6273 EOF
6274
6275 enabled vaapi &&
6276     check_lib vaapi va/va.h vaInitialize -lva
6277
6278 enabled vaapi &&
6279     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6280     disable vaapi
6281
6282 enabled vaapi &&
6283     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6284
6285 enabled vaapi &&
6286     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6287
6288 enabled vaapi &&
6289     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6290     enable vaapi_1
6291
6292 enabled vdpau &&
6293     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6294     disable vdpau
6295
6296 enabled vdpau &&
6297     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6298
6299 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6300
6301 if enabled x86; then
6302     case $target_os in
6303         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6304             ;;
6305         *)
6306             disable cuda cuvid nvenc
6307             ;;
6308     esac
6309 else
6310     disable cuda cuvid nvenc
6311 fi
6312
6313 enabled nvenc &&
6314     check_cc -I$source_path <<EOF || disable nvenc
6315 #include "compat/nvenc/nvEncodeAPI.h"
6316 NV_ENCODE_API_FUNCTION_LIST flist;
6317 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6318 int main(void) { return 0; }
6319 EOF
6320
6321 # Funny iconv installations are not unusual, so check it after all flags have been set
6322 if enabled libc_iconv; then
6323     check_func_headers iconv.h iconv
6324 elif enabled iconv; then
6325     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6326 fi
6327
6328 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6329
6330 # add some useful compiler flags if supported
6331 check_cflags -Wdeclaration-after-statement
6332 check_cflags -Wall
6333 check_cflags -Wdisabled-optimization
6334 check_cflags -Wpointer-arith
6335 check_cflags -Wredundant-decls
6336 check_cflags -Wwrite-strings
6337 check_cflags -Wtype-limits
6338 check_cflags -Wundef
6339 check_cflags -Wmissing-prototypes
6340 check_cflags -Wno-pointer-to-int-cast
6341 check_cflags -Wstrict-prototypes
6342 check_cflags -Wempty-body
6343
6344 if enabled extra_warnings; then
6345     check_cflags -Wcast-qual
6346     check_cflags -Wextra
6347     check_cflags -Wpedantic
6348 fi
6349
6350 check_disable_warning(){
6351     warning_flag=-W${1#-Wno-}
6352     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6353 }
6354
6355 test_cflags -Werror=unused-command-line-argument &&
6356     append unknown_warning_flags "-Werror=unused-command-line-argument"
6357 test_cflags -Werror=unknown-warning-option &&
6358     append unknown_warning_flags "-Werror=unknown-warning-option"
6359
6360 check_disable_warning -Wno-parentheses
6361 check_disable_warning -Wno-switch
6362 check_disable_warning -Wno-format-zero-length
6363 check_disable_warning -Wno-pointer-sign
6364 check_disable_warning -Wno-unused-const-variable
6365 check_disable_warning -Wno-bool-operation
6366
6367 check_disable_warning_headers(){
6368     warning_flag=-W${1#-Wno-}
6369     test_cflags $warning_flag && add_cflags_headers $1
6370 }
6371
6372 check_disable_warning_headers -Wno-deprecated-declarations
6373 check_disable_warning_headers -Wno-unused-variable
6374
6375 check_cc <<EOF && enable blocks_extension
6376 void (^block)(void);
6377 EOF
6378
6379 # add some linker flags
6380 check_ldflags -Wl,--warn-common
6381 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6382 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6383 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6384 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6385
6386 # add some strip flags
6387 check_stripflags -x
6388
6389 enabled neon_clobber_test &&
6390     check_ldflags -Wl,--wrap,avcodec_open2              \
6391                   -Wl,--wrap,avcodec_decode_audio4      \
6392                   -Wl,--wrap,avcodec_decode_video2      \
6393                   -Wl,--wrap,avcodec_decode_subtitle2   \
6394                   -Wl,--wrap,avcodec_encode_audio2      \
6395                   -Wl,--wrap,avcodec_encode_video2      \
6396                   -Wl,--wrap,avcodec_encode_subtitle    \
6397                   -Wl,--wrap,avcodec_send_packet        \
6398                   -Wl,--wrap,avcodec_receive_packet     \
6399                   -Wl,--wrap,avcodec_send_frame         \
6400                   -Wl,--wrap,avcodec_receive_frame      \
6401                   -Wl,--wrap,swr_convert                \
6402                   -Wl,--wrap,avresample_convert ||
6403     disable neon_clobber_test
6404
6405 enabled xmm_clobber_test &&
6406     check_ldflags -Wl,--wrap,avcodec_open2              \
6407                   -Wl,--wrap,avcodec_decode_audio4      \
6408                   -Wl,--wrap,avcodec_decode_video2      \
6409                   -Wl,--wrap,avcodec_decode_subtitle2   \
6410                   -Wl,--wrap,avcodec_encode_audio2      \
6411                   -Wl,--wrap,avcodec_encode_video2      \
6412                   -Wl,--wrap,avcodec_encode_subtitle    \
6413                   -Wl,--wrap,avcodec_send_packet        \
6414                   -Wl,--wrap,avcodec_receive_packet     \
6415                   -Wl,--wrap,avcodec_send_frame         \
6416                   -Wl,--wrap,avcodec_receive_frame      \
6417                   -Wl,--wrap,swr_convert                \
6418                   -Wl,--wrap,avresample_convert         \
6419                   -Wl,--wrap,sws_scale ||
6420     disable xmm_clobber_test
6421
6422 check_ld "cc" <<EOF && enable proper_dce
6423 extern const int array[512];
6424 static inline int func(void) { return array[0]; }
6425 int main(void) { return 0; }
6426 EOF
6427
6428 if enabled proper_dce; then
6429     echo "X { local: *; };" > $TMPV
6430     if test_ldflags -Wl,${version_script},$TMPV; then
6431         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6432         check_cc <<EOF && enable symver_asm_label
6433 void ff_foo(void) __asm__ ("av_foo@VERSION");
6434 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6435 EOF
6436         check_cc <<EOF && enable symver_gnu_asm
6437 __asm__(".symver ff_foo,av_foo@VERSION");
6438 void ff_foo(void) {}
6439 EOF
6440     fi
6441 fi
6442
6443 if [ -z "$optflags" ]; then
6444     if enabled small; then
6445         optflags=$cflags_size
6446     elif enabled optimizations; then
6447         optflags=$cflags_speed
6448     else
6449         optflags=$cflags_noopt
6450     fi
6451 fi
6452
6453 if [ -z "$nvccflags" ]; then
6454     nvccflags=$nvccflags_default
6455 fi
6456
6457 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6458     nvccflags="$nvccflags -m64"
6459 else
6460     nvccflags="$nvccflags -m32"
6461 fi
6462
6463 check_optflags(){
6464     check_cflags "$@"
6465     enabled lto && check_ldflags "$@"
6466 }
6467
6468 check_optflags $optflags
6469 check_optflags -fno-math-errno
6470 check_optflags -fno-signed-zeros
6471
6472 if enabled lto; then
6473     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6474     check_cflags  -flto
6475     check_ldflags -flto $cpuflags
6476     disable inline_asm_direct_symbol_refs
6477 fi
6478
6479 enabled ftrapv && check_cflags -ftrapv
6480
6481 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6482 int x;
6483 EOF
6484
6485
6486 if enabled icc; then
6487     # Just warnings, no remarks
6488     check_cflags -w1
6489     # -wd: Disable following warnings
6490     # 144, 167, 556: -Wno-pointer-sign
6491     # 188: enumerated type mixed with another type
6492     # 1292: attribute "foo" ignored
6493     # 1419: external declaration in primary source file
6494     # 10006: ignoring unknown option -fno-signed-zeros
6495     # 10148: ignoring unknown option -Wno-parentheses
6496     # 10156: ignoring option '-W'; no argument required
6497     # 13200: No EMMS instruction before call to function
6498     # 13203: No EMMS instruction before return from function
6499     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6500     # 11030: Warning unknown option --as-needed
6501     # 10156: ignoring option '-export'; no argument required
6502     check_ldflags -wd10156,11030
6503     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6504     enable ebp_available
6505     # The test above does not test linking
6506     enabled lto && disable symver_asm_label
6507     if enabled x86_32; then
6508         icc_version=$($cc -dumpversion)
6509         test ${icc_version%%.*} -ge 11 &&
6510             check_cflags -falign-stack=maintain-16-byte ||
6511             disable aligned_stack
6512     fi
6513 elif enabled ccc; then
6514     # disable some annoying warnings
6515     add_cflags -msg_disable bitnotint
6516     add_cflags -msg_disable mixfuncvoid
6517     add_cflags -msg_disable nonstandcast
6518     add_cflags -msg_disable unsupieee
6519 elif enabled gcc; then
6520     check_optflags -fno-tree-vectorize
6521     check_cflags -Werror=format-security
6522     check_cflags -Werror=implicit-function-declaration
6523     check_cflags -Werror=missing-prototypes
6524     check_cflags -Werror=return-type
6525     check_cflags -Werror=vla
6526     check_cflags -Wformat
6527     check_cflags -fdiagnostics-color=auto
6528     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6529 elif enabled llvm_gcc; then
6530     check_cflags -mllvm -stack-alignment=16
6531 elif enabled clang; then
6532     check_cflags -mllvm -stack-alignment=16
6533     check_cflags -mstack-alignment=16
6534     check_cflags -Qunused-arguments
6535     check_cflags -Werror=implicit-function-declaration
6536     check_cflags -Werror=missing-prototypes
6537     check_cflags -Werror=return-type
6538 elif enabled cparser; then
6539     add_cflags -Wno-missing-variable-declarations
6540     add_cflags -Wno-empty-statement
6541 elif enabled armcc; then
6542     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6543     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6544     # 2523: use of inline assembly is deprecated
6545     add_cflags -W${armcc_opt},--diag_suppress=2523
6546     add_cflags -W${armcc_opt},--diag_suppress=1207
6547     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6548     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6549     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6550     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6551 elif enabled tms470; then
6552     add_cflags -pds=824 -pds=837
6553     disable inline_asm
6554 elif enabled pathscale; then
6555     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6556 elif enabled_any msvc icl; then
6557     enabled x86_32 && disable aligned_stack
6558     enabled_all x86_32 debug && add_cflags -Oy-
6559     enabled debug && add_ldflags -debug
6560     enable pragma_deprecated
6561     if enabled icl; then
6562         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6563         # (correctly) on icl 13.x.
6564         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6565             add_cflags -Qansi-alias
6566         # Some inline asm is not compilable in debug
6567         if enabled debug; then
6568             disable ebp_available
6569             disable ebx_available
6570         fi
6571     fi
6572     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6573     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6574     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6575     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6576     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6577     # MSVC 2013 and newer can handle it fine.
6578     # If this declspec fails, force including stdlib.h before the restrict redefinition
6579     # happens in config.h.
6580     if [ $_restrict != restrict ]; then
6581         check_cc <<EOF || add_cflags -FIstdlib.h
6582 __declspec($_restrict) void* foo(int);
6583 EOF
6584     fi
6585     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6586     # Issue has been fixed in MSVC v19.00.24218.
6587     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6588         check_cflags -d2SSAOptimizer-
6589     # enable utf-8 source processing on VS2015 U2 and newer
6590     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6591         add_cflags -utf-8
6592 fi
6593
6594 for pfx in "" host_; do
6595     varname=${pfx%_}cc_type
6596     eval "type=\$$varname"
6597     if [ "$type" = "msvc" ]; then
6598         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6599 static inline int foo(int a) { return a; }
6600 EOF
6601     fi
6602 done
6603
6604 case $as_type in
6605     clang)
6606         add_asflags -Qunused-arguments
6607     ;;
6608 esac
6609
6610 case $ld_type in
6611     clang)
6612         check_ldflags -Qunused-arguments
6613     ;;
6614 esac
6615
6616 case $target_os in
6617     osf1)
6618         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6619     ;;
6620 esac
6621
6622 enable frame_thread_encoder
6623
6624 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6625
6626 check_deps $CONFIG_LIST       \
6627            $CONFIG_EXTRA      \
6628            $HAVE_LIST         \
6629            $ALL_COMPONENTS    \
6630
6631 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"
6632
6633
6634 if test $target_os = "haiku"; then
6635     disable memalign
6636     disable posix_memalign
6637 fi
6638
6639 flatten_extralibs(){
6640     unset nested_entries
6641     list_name=$1
6642     eval list=\$${1}
6643     for entry in $list; do
6644         entry_copy=$entry
6645         resolve entry_copy
6646         append nested_entries $(filter '*_extralibs' $entry_copy)
6647         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6648         eval $entry="\$flat_entries"
6649     done
6650     append $list_name "$nested_entries"
6651
6652     resolve nested_entries
6653     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6654         flatten_extralibs $list_name
6655     fi
6656 }
6657
6658 for linkunit in $LIBRARY_LIST; do
6659     unset current_extralibs
6660     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6661     for comp in ${components}; do
6662         enabled $comp || continue
6663         comp_extralibs="${comp}_extralibs"
6664         append current_extralibs $comp_extralibs
6665     done
6666     eval prepend ${linkunit}_extralibs $current_extralibs
6667 done
6668
6669 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6670     flatten_extralibs ${linkunit}_extralibs
6671     unique  ${linkunit}_extralibs
6672     resolve ${linkunit}_extralibs
6673     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
6674 done
6675
6676 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6677
6678 for thread in $THREADS_LIST; do
6679     if enabled $thread; then
6680         test -n "$thread_type" &&
6681             die "ERROR: Only one thread type must be selected." ||
6682             thread_type="$thread"
6683     fi
6684 done
6685
6686 if disabled stdatomic_h; then
6687     if enabled atomics_gcc; then
6688         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6689     elif enabled atomics_win32; then
6690         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6691     elif enabled atomics_suncc; then
6692         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6693     elif enabled pthreads; then
6694         add_compat atomics/pthread/stdatomic.o
6695         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6696     else
6697         enabled threads && die "Threading is enabled, but no atomics are available"
6698         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6699     fi
6700 fi
6701
6702 # Check if requested libraries were found.
6703 for lib in $AUTODETECT_LIBS; do
6704     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6705 done
6706
6707 enabled zlib && add_cppflags -DZLIB_CONST
6708
6709 # conditional library dependencies, in linking order
6710 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6711 enabled afir_filter         && prepend avfilter_deps "avcodec"
6712 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6713 enabled aresample_filter    && prepend avfilter_deps "swresample"
6714 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6715 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6716 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6717 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6718 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6719 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6720 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6721 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6722 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6723 enabled pan_filter          && prepend avfilter_deps "swresample"
6724 enabled pp_filter           && prepend avfilter_deps "postproc"
6725 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6726 enabled resample_filter && prepend avfilter_deps "avresample"
6727 enabled sab_filter          && prepend avfilter_deps "swscale"
6728 enabled scale_filter    && prepend avfilter_deps "swscale"
6729 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6730 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6731 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6732 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6733 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6734 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6735 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6736 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6737 enabled spp_filter          && prepend avfilter_deps "avcodec"
6738 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6739 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6740 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6741
6742 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6743
6744 #FIXME
6745 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6746
6747 enabled opus_decoder    && prepend avcodec_deps "swresample"
6748
6749 expand_deps(){
6750     lib_deps=${1}_deps
6751     eval "deps=\$$lib_deps"
6752     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6753     unique $lib_deps
6754 }
6755
6756 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6757 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6758
6759 map 'expand_deps $v' $LIBRARY_LIST
6760
6761 license="LGPL version 2.1 or later"
6762 if enabled nonfree; then
6763     license="nonfree and unredistributable"
6764 elif enabled gplv3; then
6765     license="GPL version 3 or later"
6766 elif enabled lgplv3; then
6767     license="LGPL version 3 or later"
6768 elif enabled gpl; then
6769     license="GPL version 2 or later"
6770 fi
6771
6772 if test "$quiet" != "yes"; then
6773
6774 echo "install prefix            $prefix"
6775 echo "source path               $source_path"
6776 echo "C compiler                $cc"
6777 echo "C library                 $libc_type"
6778 if test "$host_cc" != "$cc"; then
6779     echo "host C compiler           $host_cc"
6780     echo "host C library            $host_libc_type"
6781 fi
6782 echo "ARCH                      $arch ($cpu)"
6783 if test "$build_suffix" != ""; then
6784     echo "build suffix              $build_suffix"
6785 fi
6786 if test "$progs_suffix" != ""; then
6787     echo "progs suffix              $progs_suffix"
6788 fi
6789 if test "$extra_version" != ""; then
6790     echo "version string suffix     $extra_version"
6791 fi
6792 echo "big-endian                ${bigendian-no}"
6793 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6794 if enabled x86; then
6795     echo "standalone assembly       ${x86asm-no}"
6796     echo "x86 assembler             ${x86asmexe}"
6797     echo "MMX enabled               ${mmx-no}"
6798     echo "MMXEXT enabled            ${mmxext-no}"
6799     echo "3DNow! enabled            ${amd3dnow-no}"
6800     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6801     echo "SSE enabled               ${sse-no}"
6802     echo "SSSE3 enabled             ${ssse3-no}"
6803     echo "AESNI enabled             ${aesni-no}"
6804     echo "AVX enabled               ${avx-no}"
6805     echo "AVX2 enabled              ${avx2-no}"
6806     echo "XOP enabled               ${xop-no}"
6807     echo "FMA3 enabled              ${fma3-no}"
6808     echo "FMA4 enabled              ${fma4-no}"
6809     echo "i686 features enabled     ${i686-no}"
6810     echo "CMOV is fast              ${fast_cmov-no}"
6811     echo "EBX available             ${ebx_available-no}"
6812     echo "EBP available             ${ebp_available-no}"
6813 fi
6814 if enabled aarch64; then
6815     echo "NEON enabled              ${neon-no}"
6816     echo "VFP enabled               ${vfp-no}"
6817 fi
6818 if enabled arm; then
6819     echo "ARMv5TE enabled           ${armv5te-no}"
6820     echo "ARMv6 enabled             ${armv6-no}"
6821     echo "ARMv6T2 enabled           ${armv6t2-no}"
6822     echo "VFP enabled               ${vfp-no}"
6823     echo "NEON enabled              ${neon-no}"
6824     echo "THUMB enabled             ${thumb-no}"
6825 fi
6826 if enabled mips; then
6827     echo "MIPS FPU enabled          ${mipsfpu-no}"
6828     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6829     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6830     echo "MIPS MSA enabled          ${msa-no}"
6831     echo "LOONGSON MMI enabled      ${mmi-no}"
6832 fi
6833 if enabled ppc; then
6834     echo "AltiVec enabled           ${altivec-no}"
6835     echo "VSX enabled               ${vsx-no}"
6836     echo "POWER8 enabled            ${power8-no}"
6837     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6838     echo "dcbzl available           ${dcbzl-no}"
6839 fi
6840 echo "debug symbols             ${debug-no}"
6841 echo "strip symbols             ${stripping-no}"
6842 echo "optimize for size         ${small-no}"
6843 echo "optimizations             ${optimizations-no}"
6844 echo "static                    ${static-no}"
6845 echo "shared                    ${shared-no}"
6846 echo "postprocessing support    ${postproc-no}"
6847 echo "network support           ${network-no}"
6848 echo "threading support         ${thread_type-no}"
6849 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6850 echo "texi2html enabled         ${texi2html-no}"
6851 echo "perl enabled              ${perl-no}"
6852 echo "pod2man enabled           ${pod2man-no}"
6853 echo "makeinfo enabled          ${makeinfo-no}"
6854 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6855 test -n "$random_seed" &&
6856     echo "random seed               ${random_seed}"
6857 echo
6858
6859 echo "External libraries:"
6860 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6861 echo
6862
6863 echo "External libraries providing hardware acceleration:"
6864 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6865 echo
6866
6867 echo "Libraries:"
6868 print_enabled '' $LIBRARY_LIST | print_in_columns
6869 echo
6870
6871 echo "Programs:"
6872 print_enabled '' $PROGRAM_LIST | print_in_columns
6873 echo
6874
6875 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6876     echo "Enabled ${type}s:"
6877     eval list=\$$(toupper $type)_LIST
6878     print_enabled '_*' $list | print_in_columns
6879     echo
6880 done
6881
6882 if test -n "$ignore_tests"; then
6883     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6884     echo "Ignored FATE tests:"
6885     echo $ignore_tests | print_in_columns
6886     echo
6887 fi
6888
6889 echo "License: $license"
6890
6891 echo "Creating configuration files ..."
6892
6893 fi # test "$quiet" != "yes"
6894
6895 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6896
6897 enabled stripping || strip="echo skipping strip"
6898 enabled stripping || striptype=""
6899
6900 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6901
6902 cat > ffbuild/config.mak <<EOF
6903 # Automatically generated by configure - do not modify!
6904 ifndef FFMPEG_CONFIG_MAK
6905 FFMPEG_CONFIG_MAK=1
6906 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6907 prefix=$prefix
6908 LIBDIR=\$(DESTDIR)$libdir
6909 SHLIBDIR=\$(DESTDIR)$shlibdir
6910 INCDIR=\$(DESTDIR)$incdir
6911 BINDIR=\$(DESTDIR)$bindir
6912 DATADIR=\$(DESTDIR)$datadir
6913 DOCDIR=\$(DESTDIR)$docdir
6914 MANDIR=\$(DESTDIR)$mandir
6915 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6916 INSTALL_NAME_DIR=$install_name_dir
6917 SRC_PATH=$source_path
6918 SRC_LINK=$source_link
6919 ifndef MAIN_MAKEFILE
6920 SRC_PATH:=\$(SRC_PATH:.%=..%)
6921 endif
6922 CC_IDENT=$cc_ident
6923 ARCH=$arch
6924 INTRINSICS=$intrinsics
6925 CC=$cc
6926 CXX=$cxx
6927 AS=$as
6928 OBJCC=$objcc
6929 LD=$ld
6930 DEPCC=$dep_cc
6931 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6932 DEPAS=$as
6933 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6934 X86ASM=$x86asmexe
6935 DEPX86ASM=$x86asmexe
6936 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6937 AR=$ar
6938 ARFLAGS=$arflags
6939 AR_O=$ar_o
6940 RANLIB=$ranlib
6941 STRIP=$strip
6942 STRIPTYPE=$striptype
6943 NVCC=$nvcc
6944 CP=cp -p
6945 LN_S=$ln_s
6946 CPPFLAGS=$CPPFLAGS
6947 CFLAGS=$CFLAGS
6948 CXXFLAGS=$CXXFLAGS
6949 OBJCFLAGS=$OBJCFLAGS
6950 ASFLAGS=$ASFLAGS
6951 NVCCFLAGS=$nvccflags
6952 AS_C=$AS_C
6953 AS_O=$AS_O
6954 OBJCC_C=$OBJCC_C
6955 OBJCC_E=$OBJCC_E
6956 OBJCC_O=$OBJCC_O
6957 CC_C=$CC_C
6958 CC_E=$CC_E
6959 CC_O=$CC_O
6960 CXX_C=$CXX_C
6961 CXX_O=$CXX_O
6962 NVCC_C=$NVCC_C
6963 NVCC_O=$NVCC_O
6964 LD_O=$LD_O
6965 X86ASM_O=$X86ASM_O
6966 LD_LIB=$LD_LIB
6967 LD_PATH=$LD_PATH
6968 DLLTOOL=$dlltool
6969 WINDRES=$windres
6970 DEPWINDRES=$dep_cc
6971 DOXYGEN=$doxygen
6972 LDFLAGS=$LDFLAGS
6973 LDEXEFLAGS=$LDEXEFLAGS
6974 LDLIBFLAGS=$LDLIBFLAGS
6975 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6976 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6977 X86ASMFLAGS=$X86ASMFLAGS
6978 BUILDSUF=$build_suffix
6979 PROGSSUF=$progs_suffix
6980 FULLNAME=$FULLNAME
6981 LIBPREF=$LIBPREF
6982 LIBSUF=$LIBSUF
6983 LIBNAME=$LIBNAME
6984 SLIBPREF=$SLIBPREF
6985 SLIBSUF=$SLIBSUF
6986 EXESUF=$EXESUF
6987 EXTRA_VERSION=$extra_version
6988 CCDEP=$CCDEP
6989 CXXDEP=$CXXDEP
6990 CCDEP_FLAGS=$CCDEP_FLAGS
6991 ASDEP=$ASDEP
6992 ASDEP_FLAGS=$ASDEP_FLAGS
6993 X86ASMDEP=$X86ASMDEP
6994 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6995 CC_DEPFLAGS=$CC_DEPFLAGS
6996 AS_DEPFLAGS=$AS_DEPFLAGS
6997 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6998 HOSTCC=$host_cc
6999 HOSTLD=$host_ld
7000 HOSTCFLAGS=$host_cflags
7001 HOSTCPPFLAGS=$host_cppflags
7002 HOSTEXESUF=$HOSTEXESUF
7003 HOSTLDFLAGS=$host_ldflags
7004 HOSTEXTRALIBS=$host_extralibs
7005 DEPHOSTCC=$host_cc
7006 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7007 HOSTCCDEP=$HOSTCCDEP
7008 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7009 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7010 HOSTCC_C=$HOSTCC_C
7011 HOSTCC_O=$HOSTCC_O
7012 HOSTLD_O=$HOSTLD_O
7013 TARGET_EXEC=$target_exec $target_exec_args
7014 TARGET_PATH=$target_path
7015 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7016 CFLAGS-ffplay=${sdl2_cflags}
7017 CFLAGS_HEADERS=$CFLAGS_HEADERS
7018 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7019 EXTRALIBS=$extralibs
7020 COMPAT_OBJS=$compat_objs
7021 INSTALL=$install
7022 LIBTARGET=${LIBTARGET}
7023 SLIBNAME=${SLIBNAME}
7024 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7025 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7026 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7027 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7028 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7029 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7030 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7031 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7032 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7033 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7034 NOREDZONE_FLAGS=$noredzone_flags
7035 LIBFUZZER_PATH=$libfuzzer_path
7036 IGNORE_TESTS=$ignore_tests
7037 EOF
7038
7039 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7040
7041 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7042     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7043 done
7044
7045 cat > $TMPH <<EOF
7046 /* Automatically generated by configure - do not modify! */
7047 #ifndef FFMPEG_CONFIG_H
7048 #define FFMPEG_CONFIG_H
7049 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7050 #define FFMPEG_LICENSE "$(c_escape $license)"
7051 #define CONFIG_THIS_YEAR 2017
7052 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7053 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7054 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7055 #define av_restrict $_restrict
7056 #define EXTERN_PREFIX "${extern_prefix}"
7057 #define EXTERN_ASM ${extern_prefix}
7058 #define BUILDSUF "$build_suffix"
7059 #define SLIBSUF "$SLIBSUF"
7060 #define HAVE_MMX2 HAVE_MMXEXT
7061 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7062 EOF
7063
7064 test -n "$assert_level" &&
7065     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7066
7067 test -n "$malloc_prefix" &&
7068     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7069
7070 if enabled x86asm; then
7071     append config_files $TMPASM
7072     printf '' >$TMPASM
7073 fi
7074
7075 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7076
7077
7078 mkdir -p doc
7079 mkdir -p tests
7080 mkdir -p tests/api
7081 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7082
7083 print_config ARCH_   "$config_files" $ARCH_LIST
7084 print_config HAVE_   "$config_files" $HAVE_LIST
7085 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7086                                      $CONFIG_EXTRA      \
7087                                      $ALL_COMPONENTS    \
7088
7089 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7090 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7091
7092 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7093 cp_if_changed $TMPH config.h
7094 touch ffbuild/.config
7095
7096 enabled x86asm && cp_if_changed $TMPASM config.asm
7097
7098 cat > $TMPH <<EOF
7099 /* Generated by ffconf */
7100 #ifndef AVUTIL_AVCONFIG_H
7101 #define AVUTIL_AVCONFIG_H
7102 EOF
7103
7104 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7105
7106 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7107
7108 cp_if_changed $TMPH libavutil/avconfig.h
7109
7110 # generate the lists of enabled components
7111 print_enabled_components(){
7112     file=$1
7113     struct_name=$2
7114     name=$3
7115     shift 3
7116     echo "static const $struct_name * const $name[] = {" > $TMPH
7117     for c in $*; do
7118         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7119     done
7120     echo "    NULL };" >> $TMPH
7121     cp_if_changed $TMPH $file
7122 }
7123
7124 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7125 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7126
7127 if test -n "$WARNINGS"; then
7128     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7129     enabled fatal_warnings && exit 1
7130 fi
7131
7132 # Settings for pkg-config files
7133
7134 cat > ffbuild/config.sh <<EOF
7135 # Automatically generated by configure - do not modify!
7136 shared=$shared
7137 build_suffix=$build_suffix
7138 prefix=$prefix
7139 libdir=$libdir
7140 incdir=$incdir
7141 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7142 source_path=${source_path}
7143 LIBPREF=${LIBPREF}
7144 LIBSUF=${LIBSUF}
7145 extralibs_avutil="$avutil_extralibs"
7146 extralibs_avcodec="$avcodec_extralibs"
7147 extralibs_avformat="$avformat_extralibs"
7148 extralibs_avdevice="$avdevice_extralibs"
7149 extralibs_avfilter="$avfilter_extralibs"
7150 extralibs_avresample="$avresample_extralibs"
7151 extralibs_postproc="$postproc_extralibs"
7152 extralibs_swscale="$swscale_extralibs"
7153 extralibs_swresample="$swresample_extralibs"
7154 EOF
7155
7156 for lib in $LIBRARY_LIST; do
7157     lib_deps="$(eval echo \$${lib}_deps)"
7158     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7159 done