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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --enable-jni             enable JNI support [no]
 221   --enable-ladspa          enable LADSPA audio filtering [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --disable-lzma           disable lzma [autodetect]
 287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 289   --enable-mediacodec      enable Android MediaCodec support [no]
 290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 291   --enable-openal          enable OpenAL 1.1 capture support [no]
 292   --enable-opencl          enable OpenCL code
 293   --enable-opengl          enable OpenGL rendering [no]
 294   --enable-openssl         enable openssl, needed for https support
 295                            if gnutls is not used [no]
 296   --disable-sndio          disable sndio support [autodetect]
 297   --disable-schannel       disable SChannel SSP, needed for TLS support on
 298                            Windows if openssl and gnutls are not used [autodetect]
 299   --disable-sdl2           disable sdl2 [autodetect]
 300   --disable-securetransport disable Secure Transport, needed for TLS support
 301                            on OSX if openssl and gnutls are not used [autodetect]
 302   --disable-xlib           disable xlib [autodetect]
 303   --disable-zlib           disable zlib [autodetect]
 304
 305   The following libraries provide various hardware acceleration features:
 306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 312   --enable-libdrm          enable DRM code (Linux) [no]
 313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 316   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 317   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 318   --enable-omx             enable OpenMAX IL code [no]
 319   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 320   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 321   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 324
 325 Toolchain options:
 326   --arch=ARCH              select architecture [$arch]
 327   --cpu=CPU                select the minimum required CPU (affects
 328                            instruction selection, may crash on older CPUs)
 329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 330   --progs-suffix=SUFFIX    program name suffix []
 331   --enable-cross-compile   assume a cross-compiler is used
 332   --sysroot=PATH           root of cross-build tree
 333   --sysinclude=PATH        location of cross-build system headers
 334   --target-os=OS           compiler targets OS [$target_os]
 335   --target-exec=CMD        command to run executables on target
 336   --target-path=DIR        path to view of build directory on target
 337   --target-samples=DIR     path to samples directory on target
 338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 339   --toolchain=NAME         set tool defaults according to NAME
 340   --nm=NM                  use nm tool NM [$nm_default]
 341   --ar=AR                  use archive tool AR [$ar_default]
 342   --as=AS                  use assembler AS [$as_default]
 343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 344   --strip=STRIP            use strip tool STRIP [$strip_default]
 345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 347   --cc=CC                  use C compiler CC [$cc_default]
 348   --cxx=CXX                use C compiler CXX [$cxx_default]
 349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 352   --ld=LD                  use linker LD [$ld_default]
 353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 357   --host-cc=HOSTCC         use host C compiler HOSTCC
 358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 360   --host-ld=HOSTLD         use host linker HOSTLD
 361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 362   --host-libs=HLIBS        use libs HLIBS when linking for host
 363   --host-os=OS             compiler host OS [$target_os]
 364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 369   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 371   --extra-version=STRING   version string suffix []
 372   --optflags=OPTFLAGS      override optimization-related compiler flags
 373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 374   --build-suffix=SUFFIX    library name suffix []
 375   --enable-pic             build position-independent code
 376   --enable-thumb           compile for Thumb instruction set
 377   --enable-lto             use link-time optimization
 378   --env="ENV=override"     override the environment variables
 379
 380 Advanced options (experts only):
 381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 382   --custom-allocator=NAME  use a supported custom allocator
 383   --disable-symver         disable symbol versioning
 384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 385   --disable-safe-bitstream-reader
 386                            disable buffer boundary checking in bitreaders
 387                            (faster, but may crash)
 388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 389
 390 Optimization options (experts only):
 391   --disable-asm            disable all assembly optimizations
 392   --disable-altivec        disable AltiVec optimizations
 393   --disable-vsx            disable VSX optimizations
 394   --disable-power8         disable POWER8 optimizations
 395   --disable-amd3dnow       disable 3DNow! optimizations
 396   --disable-amd3dnowext    disable 3DNow! extended optimizations
 397   --disable-mmx            disable MMX optimizations
 398   --disable-mmxext         disable MMXEXT optimizations
 399   --disable-sse            disable SSE optimizations
 400   --disable-sse2           disable SSE2 optimizations
 401   --disable-sse3           disable SSE3 optimizations
 402   --disable-ssse3          disable SSSE3 optimizations
 403   --disable-sse4           disable SSE4 optimizations
 404   --disable-sse42          disable SSE4.2 optimizations
 405   --disable-avx            disable AVX optimizations
 406   --disable-xop            disable XOP optimizations
 407   --disable-fma3           disable FMA3 optimizations
 408   --disable-fma4           disable FMA4 optimizations
 409   --disable-avx2           disable AVX2 optimizations
 410   --disable-aesni          disable AESNI optimizations
 411   --disable-armv5te        disable armv5te optimizations
 412   --disable-armv6          disable armv6 optimizations
 413   --disable-armv6t2        disable armv6t2 optimizations
 414   --disable-vfp            disable VFP optimizations
 415   --disable-neon           disable NEON optimizations
 416   --disable-inline-asm     disable use of inline assembly
 417   --disable-x86asm         disable use of standalone x86 assembly
 418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 420   --disable-msa            disable MSA optimizations
 421   --disable-mipsfpu        disable floating point MIPS optimizations
 422   --disable-mmi            disable Loongson SIMD optimizations
 423   --disable-fast-unaligned consider unaligned accesses slow
 424
 425 Developer options (useful when working on FFmpeg itself):
 426   --disable-debug          disable debugging symbols
 427   --enable-debug=LEVEL     set the debug level [$debuglevel]
 428   --disable-optimizations  disable compiler optimizations
 429   --enable-extra-warnings  enable more compiler warnings
 430   --disable-stripping      disable stripping of executables and shared libraries
 431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 432                            2 causes a slowdown at runtime.
 433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 435                            leaks and errors, using the specified valgrind binary.
 436                            Cannot be combined with --target-exec
 437   --enable-ftrapv          Trap arithmetic overflows
 438   --samples=PATH           location of test samples for FATE, if not set use
 439                            \$FATE_SAMPLES at make invocation time.
 440   --enable-neon-clobber-test check NEON registers for clobbering (should be
 441                            used only for debugging purposes)
 442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 443                            should be used only for debugging purposes)
 444   --enable-random          randomly enable/disable components
 445   --disable-random
 446   --enable-random=LIST     randomly enable/disable specific components or
 447   --disable-random=LIST    component groups. LIST is a comma-separated list
 448                            of NAME[:PROB] entries where NAME is a component
 449                            (group) and PROB the probability associated with
 450                            NAME (default 0.5).
 451   --random-seed=VALUE      seed value for --enable/disable-random
 452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 453                            (only applies to --disable-optimizations builds)
 454   --enable-osfuzz          Enable building fuzzer tool
 455   --libfuzzer=PATH         path to libfuzzer
 456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 457                            in the name) of tests whose result is ignored
 458   --enable-linux-perf      enable Linux Performance Monitor API
 459
 460 NOTE: Object files are built at the place where configure is launched.
 461 EOF
 462   exit 0
 463 }
 464
 465 quotes='""'
 466 if test -t 1 && which tput >/dev/null 2>&1; then
 467     ncolors=$(tput colors)
 468     if test -n "$ncolors" && test $ncolors -ge 8; then
 469         bold_color=$(tput bold)
 470         warn_color=$(tput setaf 3)
 471         error_color=$(tput setaf 1)
 472         reset_color=$(tput sgr0)
 473     fi
 474     # 72 used instead of 80 since that's the default of pr
 475     ncols=$(tput cols)
 476 fi
 477 : ${ncols:=72}
 478
 479 log(){
 480     echo "$@" >> $logfile
 481 }
 482
 483 log_file(){
 484     log BEGIN $1
 485     pr -n -t $1 >> $logfile
 486     log END $1
 487 }
 488
 489 warn(){
 490     log "WARNING: $*"
 491     WARNINGS="${WARNINGS}WARNING: $*\n"
 492 }
 493
 494 die(){
 495     log "$@"
 496     echo "$error_color$bold_color$@$reset_color"
 497     cat <<EOF
 498
 499 If you think configure made a mistake, make sure you are using the latest
 500 version from Git.  If the latest version fails, report the problem to the
 501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 502 EOF
 503     if disabled logging; then
 504         cat <<EOF
 505 Rerun configure with logging enabled (do not use --disable-logging), and
 506 include the log this produces with your report.
 507 EOF
 508     else
 509         cat <<EOF
 510 Include the log file "$logfile" produced by configure as this will help
 511 solve the problem.
 512 EOF
 513     fi
 514     exit 1
 515 }
 516
 517 # Avoid locale weirdness, besides we really just want to translate ASCII.
 518 toupper(){
 519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 520 }
 521
 522 tolower(){
 523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 524 }
 525
 526 c_escape(){
 527     echo "$*" | sed 's/["\\]/\\\0/g'
 528 }
 529
 530 sh_quote(){
 531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 533     echo "$v"
 534 }
 535
 536 cleanws(){
 537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 538 }
 539
 540 filter(){
 541     pat=$1
 542     shift
 543     for v; do
 544         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 545     done
 546 }
 547
 548 filter_out(){
 549     pat=$1
 550     shift
 551     for v; do
 552         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 553     done
 554 }
 555
 556 map(){
 557     m=$1
 558     shift
 559     for v; do eval $m; done
 560 }
 561
 562 add_suffix(){
 563     suffix=$1
 564     shift
 565     for v; do echo ${v}${suffix}; done
 566 }
 567
 568 set_all(){
 569     value=$1
 570     shift
 571     for var in $*; do
 572         eval $var=$value
 573     done
 574 }
 575
 576 set_weak(){
 577     value=$1
 578     shift
 579     for var; do
 580         eval : \${$var:=$value}
 581     done
 582 }
 583
 584 sanitize_var_name(){
 585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 586 }
 587
 588 set_sanitized(){
 589     var=$1
 590     shift
 591     eval $(sanitize_var_name "$var")='$*'
 592 }
 593
 594 get_sanitized(){
 595     eval echo \$$(sanitize_var_name "$1")
 596 }
 597
 598 pushvar(){
 599     for pvar in $*; do
 600         eval level=\${${pvar}_level:=0}
 601         eval ${pvar}_${level}="\$$pvar"
 602         eval ${pvar}_level=$(($level+1))
 603     done
 604 }
 605
 606 popvar(){
 607     for pvar in $*; do
 608         eval level=\${${pvar}_level:-0}
 609         test $level = 0 && continue
 610         eval level=$(($level-1))
 611         eval $pvar="\${${pvar}_${level}}"
 612         eval ${pvar}_level=$level
 613         eval unset ${pvar}_${level}
 614     done
 615 }
 616
 617 request(){
 618     for var in $*; do
 619         eval ${var}_requested=yes
 620         eval $var=
 621     done
 622 }
 623
 624 enable(){
 625     set_all yes $*
 626 }
 627
 628 disable(){
 629     set_all no $*
 630 }
 631
 632 enable_weak(){
 633     set_weak yes $*
 634 }
 635
 636 disable_weak(){
 637     set_weak no $*
 638 }
 639
 640 enable_sanitized(){
 641     for var; do
 642         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 643     done
 644 }
 645
 646 disable_sanitized(){
 647     for var; do
 648         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 649     done
 650 }
 651
 652 do_enable_deep(){
 653     for var; do
 654         enabled $var && continue
 655         eval sel="\$${var}_select"
 656         eval sgs="\$${var}_suggest"
 657         pushvar var sgs
 658         enable_deep $sel
 659         popvar sgs
 660         enable_deep_weak $sgs
 661         popvar var
 662     done
 663 }
 664
 665 enable_deep(){
 666     do_enable_deep $*
 667     enable $*
 668 }
 669
 670 enable_deep_weak(){
 671     for var; do
 672         disabled $var && continue
 673         pushvar var
 674         do_enable_deep $var
 675         popvar var
 676         enable_weak $var
 677     done
 678 }
 679
 680 requested(){
 681     test "${1#!}" = "$1" && op='=' || op=!=
 682     eval test "x\$${1#!}_requested" $op "xyes"
 683 }
 684
 685 enabled(){
 686     test "${1#!}" = "$1" && op='=' || op=!=
 687     eval test "x\$${1#!}" $op "xyes"
 688 }
 689
 690 disabled(){
 691     test "${1#!}" = "$1" && op='=' || op=!=
 692     eval test "x\$${1#!}" $op "xno"
 693 }
 694
 695 enabled_all(){
 696     for opt; do
 697         enabled $opt || return 1
 698     done
 699 }
 700
 701 disabled_all(){
 702     for opt; do
 703         disabled $opt || return 1
 704     done
 705 }
 706
 707 enabled_any(){
 708     for opt; do
 709         enabled $opt && return 0
 710     done
 711 }
 712
 713 disabled_any(){
 714     for opt; do
 715         disabled $opt && return 0
 716     done
 717     return 1
 718 }
 719
 720 set_default(){
 721     for opt; do
 722         eval : \${$opt:=\$${opt}_default}
 723     done
 724 }
 725
 726 is_in(){
 727     value=$1
 728     shift
 729     for var in $*; do
 730         [ $var = $value ] && return 0
 731     done
 732     return 1
 733 }
 734
 735 check_deps(){
 736     for cfg; do
 737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 738         disabled ${cfg}_checking && continue
 739         enable ${cfg}_checking
 740
 741         eval dep_all="\$${cfg}_deps"
 742         eval dep_any="\$${cfg}_deps_any"
 743         eval dep_con="\$${cfg}_conflict"
 744         eval dep_sel="\$${cfg}_select"
 745         eval dep_sgs="\$${cfg}_suggest"
 746         eval dep_ifa="\$${cfg}_if"
 747         eval dep_ifn="\$${cfg}_if_any"
 748
 749         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 750         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 751         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 752
 753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 757         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 758         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 759
 760         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 761
 762         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 763             # filter out library deps, these do not belong in extralibs
 764             is_in $dep $LIBRARY_LIST && continue
 765             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 766         done
 767
 768         disable ${cfg}_checking
 769     done
 770 }
 771
 772 print_config(){
 773     pfx=$1
 774     files=$2
 775     shift 2
 776     map 'eval echo "$v \${$v:-no}"' "$@" |
 777     awk "BEGIN { split(\"$files\", files) }
 778         {
 779             c = \"$pfx\" toupper(\$1);
 780             v = \$2;
 781             sub(/yes/, 1, v);
 782             sub(/no/,  0, v);
 783             for (f in files) {
 784                 file = files[f];
 785                 if (file ~ /\\.h\$/) {
 786                     printf(\"#define %s %d\\n\", c, v) >>file;
 787                 } else if (file ~ /\\.asm\$/) {
 788                     printf(\"%%define %s %d\\n\", c, v) >>file;
 789                 } else if (file ~ /\\.mak\$/) {
 790                     n = -v ? \"\" : \"!\";
 791                     printf(\"%s%s=yes\\n\", n, c) >>file;
 792                 } else if (file ~ /\\.texi\$/) {
 793                     pre = -v ? \"\" : \"@c \";
 794                     yesno = \$2;
 795                     c2 = tolower(c);
 796                     gsub(/_/, \"-\", c2);
 797                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 798                 }
 799             }
 800         }"
 801 }
 802
 803 print_enabled(){
 804     suf=$1
 805     shift
 806     for v; do
 807         enabled $v && printf "%s\n" ${v%$suf}
 808     done
 809 }
 810
 811 append(){
 812     var=$1
 813     shift
 814     eval "$var=\"\$$var $*\""
 815 }
 816
 817 prepend(){
 818     var=$1
 819     shift
 820     eval "$var=\"$* \$$var\""
 821 }
 822
 823 unique(){
 824     var=$1
 825     uniq_list=""
 826     for tok in $(eval echo \$$var); do
 827         uniq_list="$(filter_out $tok $uniq_list) $tok"
 828     done
 829     eval "$var=\"${uniq_list}\""
 830 }
 831
 832 resolve(){
 833     var=$1
 834     tmpvar=
 835     for entry in $(eval echo \$$var); do
 836         tmpvar="$tmpvar $(eval echo \$${entry})"
 837     done
 838     eval "$var=\"${tmpvar}\""
 839 }
 840
 841 add_cppflags(){
 842     append CPPFLAGS "$@"
 843 }
 844
 845 add_cflags(){
 846     append CFLAGS $($cflags_filter "$@")
 847 }
 848
 849 add_cflags_headers(){
 850     append CFLAGS_HEADERS $($cflags_filter "$@")
 851 }
 852
 853 add_cxxflags(){
 854     append CXXFLAGS $($cflags_filter "$@")
 855 }
 856
 857 add_asflags(){
 858     append ASFLAGS $($asflags_filter "$@")
 859 }
 860
 861 add_objcflags(){
 862     append OBJCFLAGS $($objcflags_filter "$@")
 863 }
 864
 865 add_ldflags(){
 866     append LDFLAGS $($ldflags_filter "$@")
 867 }
 868
 869 add_ldexeflags(){
 870     append LDEXEFLAGS $($ldflags_filter "$@")
 871 }
 872
 873 add_ldsoflags(){
 874     append LDSOFLAGS $($ldflags_filter "$@")
 875 }
 876
 877 add_stripflags(){
 878     append ASMSTRIPFLAGS "$@"
 879 }
 880
 881 add_extralibs(){
 882     prepend extralibs $($ldflags_filter "$@")
 883 }
 884
 885 add_host_cppflags(){
 886     append host_cppflags "$@"
 887 }
 888
 889 add_host_cflags(){
 890     append host_cflags $($host_cflags_filter "$@")
 891 }
 892
 893 add_host_ldflags(){
 894     append host_ldflags $($host_ldflags_filter "$@")
 895 }
 896
 897 add_compat(){
 898     append compat_objs $1
 899     shift
 900     map 'add_cppflags -D$v' "$@"
 901 }
 902
 903 check_cmd(){
 904     log "$@"
 905     "$@" >> $logfile 2>&1
 906 }
 907
 908 check_stat(){
 909     log check_stat "$@"
 910     stat "$1" >> $logfile 2>&1
 911 }
 912
 913 cc_o(){
 914     eval printf '%s\\n' $CC_O
 915 }
 916
 917 cc_e(){
 918     eval printf '%s\\n' $CC_E
 919 }
 920
 921 check_cc(){
 922     log check_cc "$@"
 923     cat > $TMPC
 924     log_file $TMPC
 925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 926 }
 927
 928 check_cxx(){
 929     log check_cxx "$@"
 930     cat > $TMPCPP
 931     log_file $TMPCPP
 932     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 933 }
 934
 935 check_objcc(){
 936     log check_objcc "$@"
 937     cat > $TMPM
 938     log_file $TMPM
 939     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 940 }
 941
 942 check_cpp(){
 943     log check_cpp "$@"
 944     cat > $TMPC
 945     log_file $TMPC
 946     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 947 }
 948
 949 as_o(){
 950     eval printf '%s\\n' $AS_O
 951 }
 952
 953 check_as(){
 954     log check_as "$@"
 955     cat > $TMPS
 956     log_file $TMPS
 957     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 958 }
 959
 960 check_inline_asm(){
 961     log check_inline_asm "$@"
 962     name="$1"
 963     code="$2"
 964     shift 2
 965     disable $name
 966     check_cc "$@" <<EOF && enable $name
 967 void foo(void){ __asm__ volatile($code); }
 968 EOF
 969 }
 970
 971 check_inline_asm_flags(){
 972     log check_inline_asm_flags "$@"
 973     name="$1"
 974     code="$2"
 975     flags=''
 976     shift 2
 977     while [ "$1" != "" ]; do
 978       append flags $1
 979       shift
 980     done;
 981     disable $name
 982     cat > $TMPC <<EOF
 983 void foo(void){ __asm__ volatile($code); }
 984 EOF
 985     log_file $TMPC
 986     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 987     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 988 }
 989
 990 check_insn(){
 991     log check_insn "$@"
 992     check_inline_asm ${1}_inline "\"$2\""
 993     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 994 }
 995
 996 check_x86asm(){
 997     log check_x86asm "$@"
 998     echo "$1" > $TMPS
 999     log_file $TMPS
1000     shift 1
1001     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 check_ld(){
1009     log check_ld "$@"
1010     type=$1
1011     shift 1
1012     flags=$(filter_out '-l*|*.so' $@)
1013     libs=$(filter '-l*|*.so' $@)
1014     check_$type $($cflags_filter $flags) || return
1015     flags=$($ldflags_filter $flags)
1016     libs=$($ldflags_filter $libs)
1017     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1018 }
1019
1020 print_include(){
1021     hdr=$1
1022     test "${hdr%.h}" = "${hdr}" &&
1023         echo "#include $hdr"    ||
1024         echo "#include <$hdr>"
1025 }
1026
1027 check_code(){
1028     log check_code "$@"
1029     check=$1
1030     headers=$2
1031     code=$3
1032     shift 3
1033     {
1034         for hdr in $headers; do
1035             print_include $hdr
1036         done
1037         echo "int main(void) { $code; return 0; }"
1038     } | check_$check "$@"
1039 }
1040
1041 check_cppflags(){
1042     log check_cppflags "$@"
1043     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1044 #include <stdlib.h>
1045 EOF
1046 }
1047
1048 test_cflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_cflags(){
1057     log check_cflags "$@"
1058     test_cflags "$@" && add_cflags "$@"
1059 }
1060
1061 check_cxxflags(){
1062     log check_cxxflags "$@"
1063     set -- $($cflags_filter "$@")
1064     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1065 int x;
1066 EOF
1067 }
1068
1069 test_objcflags(){
1070     log test_objcflags "$@"
1071     set -- $($objcflags_filter "$@")
1072     check_objcc "$@" <<EOF
1073 int x;
1074 EOF
1075 }
1076
1077 check_objcflags(){
1078     log check_objcflags "$@"
1079     test_objcflags "$@" && add_objcflags "$@"
1080 }
1081
1082 test_ldflags(){
1083     log test_ldflags "$@"
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     headers=$1
1111     shift
1112     disable_sanitized $headers
1113     {
1114         for hdr in $headers; do
1115             print_include $hdr
1116         done
1117         echo "int x;"
1118     } | check_cpp "$@" && enable_sanitized $headers
1119 }
1120
1121 check_header_objcc(){
1122     log check_header_objcc "$@"
1123     rm -f -- "$TMPO"
1124     header=$1
1125     shift
1126     disable_sanitized $header
1127     {
1128        echo "#include <$header>"
1129        echo "int main(void) { return 0; }"
1130     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1131 }
1132
1133 check_apple_framework(){
1134     log check_apple_framework "$@"
1135     framework="$1"
1136     name="$(tolower $framework)"
1137     header="${framework}/${framework}.h"
1138     disable $name
1139     check_header_objcc $header &&
1140         enable $name && eval ${name}_extralibs='"-framework $framework"'
1141 }
1142
1143 check_func(){
1144     log check_func "$@"
1145     func=$1
1146     shift
1147     disable $func
1148     check_ld "cc" "$@" <<EOF && enable $func
1149 extern int $func();
1150 int main(void){ $func(); }
1151 EOF
1152 }
1153
1154 check_complexfunc(){
1155     log check_complexfunc "$@"
1156     func=$1
1157     narg=$2
1158     shift 2
1159     test $narg = 2 && args="f, g" || args="f * I"
1160     disable $func
1161     check_ld "cc" "$@" <<EOF && enable $func
1162 #include <complex.h>
1163 #include <math.h>
1164 float foo(complex float f, complex float g) { return $func($args); }
1165 int main(void){ return (int) foo; }
1166 EOF
1167 }
1168
1169 check_mathfunc(){
1170     log check_mathfunc "$@"
1171     func=$1
1172     narg=$2
1173     shift 2
1174     test $narg = 2 && args="f, g" || args="f"
1175     disable $func
1176     check_ld "cc" "$@" <<EOF && enable $func
1177 #include <math.h>
1178 float foo(float f, float g) { return $func($args); }
1179 int main(void){ return (int) foo; }
1180 EOF
1181 }
1182
1183 check_func_headers(){
1184     log check_func_headers "$@"
1185     headers=$1
1186     funcs=$2
1187     shift 2
1188     {
1189         for hdr in $headers; do
1190             print_include $hdr
1191         done
1192         echo "#include <stdint.h>"
1193         for func in $funcs; do
1194             echo "long check_$func(void) { return (long) $func; }"
1195         done
1196         echo "int main(void) { int ret = 0;"
1197         # LTO could optimize out the test functions without this
1198         for func in $funcs; do
1199             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1200         done
1201         echo "return ret; }"
1202     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1203 }
1204
1205 check_class_headers_cpp(){
1206     log check_class_headers_cpp "$@"
1207     headers=$1
1208     classes=$2
1209     shift 2
1210     {
1211         for hdr in $headers; do
1212             echo "#include <$hdr>"
1213         done
1214         echo "int main(void) { "
1215         i=1
1216         for class in $classes; do
1217             echo "$class obj$i;"
1218             i=$(expr $i + 1)
1219         done
1220         echo "return 0; }"
1221     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1222 }
1223
1224 check_cpp_condition(){
1225     log check_cpp_condition "$@"
1226     header=$1
1227     condition=$2
1228     shift 2
1229     check_cpp "$@" <<EOF
1230 #include <$header>
1231 #if !($condition)
1232 #error "unsatisfied condition: $condition"
1233 #endif
1234 EOF
1235 }
1236
1237 test_cflags_cc(){
1238     log test_cflags_cc "$@"
1239     flags=$1
1240     header=$2
1241     condition=$3
1242     shift 3
1243     set -- $($cflags_filter "$flags")
1244     check_cc "$@" <<EOF
1245 #include <$header>
1246 #if !($condition)
1247 #error "unsatisfied condition: $condition"
1248 #endif
1249 EOF
1250 }
1251
1252 check_lib(){
1253     log check_lib "$@"
1254     name="$1"
1255     headers="$2"
1256     funcs="$3"
1257     shift 3
1258     disable $name
1259     check_func_headers "$headers" "$funcs" "$@" &&
1260         enable $name && eval ${name}_extralibs="\$@"
1261 }
1262
1263 check_lib_cpp(){
1264     log check_lib_cpp "$@"
1265     name="$1"
1266     headers="$2"
1267     classes="$3"
1268     shift 3
1269     disable $name
1270     check_class_headers_cpp "$headers" "$classes" "$@" &&
1271         enable $name && eval ${name}_extralibs="\$@"
1272 }
1273
1274 test_pkg_config(){
1275     log test_pkg_config "$@"
1276     name="$1"
1277     pkg_version="$2"
1278     pkg="${2%% *}"
1279     headers="$3"
1280     funcs="$4"
1281     shift 4
1282     disable $name
1283     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1284     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1285     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1286     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1287         enable $name &&
1288         set_sanitized "${name}_cflags"    $pkg_cflags &&
1289         set_sanitized "${name}_extralibs" $pkg_libs
1290 }
1291
1292 check_pkg_config(){
1293     log check_pkg_config "$@"
1294     name="$1"
1295     test_pkg_config "$@" &&
1296         eval add_cflags \$${name}_cflags
1297 }
1298
1299 check_exec(){
1300     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1301 }
1302
1303 check_exec_crash(){
1304     log check_exec_crash "$@"
1305     code=$(cat)
1306
1307     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1308     # are safe but may not be available everywhere.  Thus we use
1309     # raise(SIGTERM) instead.  The check is run in a subshell so we
1310     # can redirect the "Terminated" message from the shell.  SIGBUS
1311     # is not defined by standard C so it is used conditionally.
1312
1313     (check_exec "$@") >> $logfile 2>&1 <<EOF
1314 #include <signal.h>
1315 static void sighandler(int sig){
1316     raise(SIGTERM);
1317 }
1318 int foo(void){
1319     $code
1320 }
1321 int (*func_ptr)(void) = foo;
1322 int main(void){
1323     signal(SIGILL, sighandler);
1324     signal(SIGFPE, sighandler);
1325     signal(SIGSEGV, sighandler);
1326 #ifdef SIGBUS
1327     signal(SIGBUS, sighandler);
1328 #endif
1329     return func_ptr();
1330 }
1331 EOF
1332 }
1333
1334 check_type(){
1335     log check_type "$@"
1336     headers=$1
1337     type=$2
1338     shift 2
1339     disable_sanitized "$type"
1340     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1341 }
1342
1343 check_struct(){
1344     log check_struct "$@"
1345     headers=$1
1346     struct=$2
1347     member=$3
1348     shift 3
1349     disable_sanitized "${struct}_${member}"
1350     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1351         enable_sanitized "${struct}_${member}"
1352 }
1353
1354 check_builtin(){
1355     log check_builtin "$@"
1356     name=$1
1357     headers=$2
1358     builtin=$3
1359     shift 3
1360     disable "$name"
1361     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1362 }
1363
1364 check_compile_assert(){
1365     log check_compile_assert "$@"
1366     name=$1
1367     headers=$2
1368     condition=$3
1369     shift 3
1370     disable "$name"
1371     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1372 }
1373
1374 require(){
1375     log require "$@"
1376     name_version="$1"
1377     name="${1%% *}"
1378     headers="$2"
1379     func="$3"
1380     shift 3
1381     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1382 }
1383
1384 require_cpp(){
1385     name="$1"
1386     headers="$2"
1387     classes="$3"
1388     shift 3
1389     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1390 }
1391
1392 require_header(){
1393     log require "$@"
1394     headers="$1"
1395     shift
1396     check_header "$headers" "$@" || die "ERROR: $headers not found"
1397 }
1398
1399 require_cpp_condition(){
1400     log require "$@"
1401     header="$1"
1402     condition="$2"
1403     shift 2
1404     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1405 }
1406
1407 require_pkg_config(){
1408     log require_pkg_config "$@"
1409     pkg_version="$2"
1410     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1411 }
1412
1413 hostcc_e(){
1414     eval printf '%s\\n' $HOSTCC_E
1415 }
1416
1417 hostcc_o(){
1418     eval printf '%s\\n' $HOSTCC_O
1419 }
1420
1421 check_host_cc(){
1422     log check_host_cc "$@"
1423     cat > $TMPC
1424     log_file $TMPC
1425     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1426 }
1427
1428 check_host_cpp(){
1429     log check_host_cpp "$@"
1430     cat > $TMPC
1431     log_file $TMPC
1432     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1433 }
1434
1435 check_host_cppflags(){
1436     log check_host_cppflags "$@"
1437     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1438 #include <stdlib.h>
1439 EOF
1440 }
1441
1442 check_host_cflags(){
1443     log check_host_cflags "$@"
1444     set -- $($host_cflags_filter "$@")
1445     check_host_cc "$@" <<EOF && append host_cflags "$@"
1446 int x;
1447 EOF
1448 }
1449
1450 check_host_cpp_condition(){
1451     log check_host_cpp_condition "$@"
1452     header=$1
1453     condition=$2
1454     shift 2
1455     check_host_cpp "$@" <<EOF
1456 #include <$header>
1457 #if !($condition)
1458 #error "unsatisfied condition: $condition"
1459 #endif
1460 EOF
1461 }
1462
1463 cp_if_changed(){
1464     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1465     mkdir -p "$(dirname $2)"
1466     cp -f "$1" "$2"
1467 }
1468
1469 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1470 # system-dependent things.
1471
1472 AVCODEC_COMPONENTS="
1473     bsfs
1474     decoders
1475     encoders
1476     hwaccels
1477     parsers
1478 "
1479
1480 AVDEVICE_COMPONENTS="
1481     indevs
1482     outdevs
1483 "
1484
1485 AVFILTER_COMPONENTS="
1486     filters
1487 "
1488
1489 AVFORMAT_COMPONENTS="
1490     demuxers
1491     muxers
1492     protocols
1493 "
1494
1495 COMPONENT_LIST="
1496     $AVCODEC_COMPONENTS
1497     $AVDEVICE_COMPONENTS
1498     $AVFILTER_COMPONENTS
1499     $AVFORMAT_COMPONENTS
1500 "
1501
1502 EXAMPLE_LIST="
1503     avio_dir_cmd_example
1504     avio_reading_example
1505     decode_audio_example
1506     decode_video_example
1507     demuxing_decoding_example
1508     encode_audio_example
1509     encode_video_example
1510     extract_mvs_example
1511     filter_audio_example
1512     filtering_audio_example
1513     filtering_video_example
1514     http_multiclient_example
1515     hw_decode_example
1516     metadata_example
1517     muxing_example
1518     qsvdec_example
1519     remuxing_example
1520     resampling_audio_example
1521     scaling_video_example
1522     transcode_aac_example
1523     transcoding_example
1524 "
1525
1526 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1527     alsa
1528     appkit
1529     avfoundation
1530     bzlib
1531     coreimage
1532     iconv
1533     libxcb
1534     libxcb_shm
1535     libxcb_shape
1536     libxcb_xfixes
1537     lzma
1538     schannel
1539     sdl2
1540     securetransport
1541     sndio
1542     xlib
1543     zlib
1544 "
1545
1546 EXTERNAL_LIBRARY_GPL_LIST="
1547     avisynth
1548     frei0r
1549     libcdio
1550     librubberband
1551     libvidstab
1552     libx264
1553     libx265
1554     libxavs
1555     libxvid
1556 "
1557
1558 EXTERNAL_LIBRARY_NONFREE_LIST="
1559     decklink
1560     libndi_newtek
1561     libfdk_aac
1562     openssl
1563 "
1564
1565 EXTERNAL_LIBRARY_VERSION3_LIST="
1566     gmp
1567     libopencore_amrnb
1568     libopencore_amrwb
1569     libvmaf
1570     libvo_amrwbenc
1571     rkmpp
1572 "
1573
1574 EXTERNAL_LIBRARY_GPLV3_LIST="
1575     libsmbclient
1576 "
1577
1578 EXTERNAL_LIBRARY_LIST="
1579     $EXTERNAL_LIBRARY_GPL_LIST
1580     $EXTERNAL_LIBRARY_NONFREE_LIST
1581     $EXTERNAL_LIBRARY_VERSION3_LIST
1582     $EXTERNAL_LIBRARY_GPLV3_LIST
1583     chromaprint
1584     gcrypt
1585     gnutls
1586     jni
1587     ladspa
1588     libass
1589     libbluray
1590     libbs2b
1591     libcaca
1592     libcelt
1593     libdc1394
1594     libdrm
1595     libflite
1596     libfontconfig
1597     libfreetype
1598     libfribidi
1599     libgme
1600     libgsm
1601     libiec61883
1602     libilbc
1603     libjack
1604     libkvazaar
1605     libmodplug
1606     libmp3lame
1607     libmysofa
1608     libopencv
1609     libopenh264
1610     libopenjpeg
1611     libopenmpt
1612     libopus
1613     libpulse
1614     librsvg
1615     librtmp
1616     libshine
1617     libsmbclient
1618     libsnappy
1619     libsoxr
1620     libspeex
1621     libssh
1622     libtesseract
1623     libtheora
1624     libtwolame
1625     libv4l2
1626     libvorbis
1627     libvpx
1628     libwavpack
1629     libwebp
1630     libxml2
1631     libzimg
1632     libzmq
1633     libzvbi
1634     mediacodec
1635     openal
1636     opencl
1637     opengl
1638 "
1639
1640 HWACCEL_AUTODETECT_LIBRARY_LIST="
1641     audiotoolbox
1642     crystalhd
1643     cuda
1644     cuvid
1645     d3d11va
1646     dxva2
1647     nvdec
1648     nvenc
1649     vaapi
1650     vdpau
1651     videotoolbox
1652     v4l2_m2m
1653     xvmc
1654 "
1655
1656 # catchall list of things that require external libs to link
1657 EXTRALIBS_LIST="
1658     cpu_init
1659     cws2fws
1660 "
1661
1662 HWACCEL_LIBRARY_NONFREE_LIST="
1663     cuda_sdk
1664     libnpp
1665 "
1666
1667 HWACCEL_LIBRARY_LIST="
1668     $HWACCEL_LIBRARY_NONFREE_LIST
1669     libmfx
1670     mmal
1671     omx
1672 "
1673
1674 DOCUMENT_LIST="
1675     doc
1676     htmlpages
1677     manpages
1678     podpages
1679     txtpages
1680 "
1681
1682 FEATURE_LIST="
1683     ftrapv
1684     gray
1685     hardcoded_tables
1686     omx_rpi
1687     runtime_cpudetect
1688     safe_bitstream_reader
1689     shared
1690     small
1691     static
1692     swscale_alpha
1693 "
1694
1695 LIBRARY_LIST="
1696     avcodec
1697     avdevice
1698     avfilter
1699     avformat
1700     avresample
1701     avutil
1702     postproc
1703     swresample
1704     swscale
1705 "
1706
1707 LICENSE_LIST="
1708     gpl
1709     nonfree
1710     version3
1711 "
1712
1713 PROGRAM_LIST="
1714     ffplay
1715     ffprobe
1716     ffserver
1717     ffmpeg
1718 "
1719
1720 SUBSYSTEM_LIST="
1721     dct
1722     dwt
1723     error_resilience
1724     faan
1725     fast_unaligned
1726     fft
1727     lsp
1728     lzo
1729     mdct
1730     pixelutils
1731     network
1732     rdft
1733 "
1734
1735 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1736 CONFIG_LIST="
1737     $DOCUMENT_LIST
1738     $EXAMPLE_LIST
1739     $EXTERNAL_LIBRARY_LIST
1740     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1741     $HWACCEL_LIBRARY_LIST
1742     $HWACCEL_AUTODETECT_LIBRARY_LIST
1743     $FEATURE_LIST
1744     $LICENSE_LIST
1745     $LIBRARY_LIST
1746     $PROGRAM_LIST
1747     $SUBSYSTEM_LIST
1748     autodetect
1749     fontconfig
1750     linux_perf
1751     memory_poisoning
1752     neon_clobber_test
1753     ossfuzz
1754     pic
1755     thumb
1756     valgrind_backtrace
1757     xmm_clobber_test
1758     $COMPONENT_LIST
1759 "
1760
1761 THREADS_LIST="
1762     pthreads
1763     os2threads
1764     w32threads
1765 "
1766
1767 ATOMICS_LIST="
1768     atomics_gcc
1769     atomics_suncc
1770     atomics_win32
1771 "
1772
1773 AUTODETECT_LIBS="
1774     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1775     $HWACCEL_AUTODETECT_LIBRARY_LIST
1776     $THREADS_LIST
1777 "
1778
1779 ARCH_LIST="
1780     aarch64
1781     alpha
1782     arm
1783     avr32
1784     avr32_ap
1785     avr32_uc
1786     bfin
1787     ia64
1788     m68k
1789     mips
1790     mips64
1791     parisc
1792     ppc
1793     ppc64
1794     s390
1795     sh4
1796     sparc
1797     sparc64
1798     tilegx
1799     tilepro
1800     tomi
1801     x86
1802     x86_32
1803     x86_64
1804 "
1805
1806 ARCH_EXT_LIST_ARM="
1807     armv5te
1808     armv6
1809     armv6t2
1810     armv8
1811     neon
1812     vfp
1813     vfpv3
1814     setend
1815 "
1816
1817 ARCH_EXT_LIST_MIPS="
1818     mipsfpu
1819     mips32r2
1820     mips32r5
1821     mips64r2
1822     mips32r6
1823     mips64r6
1824     mipsdsp
1825     mipsdspr2
1826     msa
1827 "
1828
1829 ARCH_EXT_LIST_LOONGSON="
1830     loongson2
1831     loongson3
1832     mmi
1833 "
1834
1835 ARCH_EXT_LIST_X86_SIMD="
1836     aesni
1837     amd3dnow
1838     amd3dnowext
1839     avx
1840     avx2
1841     fma3
1842     fma4
1843     mmx
1844     mmxext
1845     sse
1846     sse2
1847     sse3
1848     sse4
1849     sse42
1850     ssse3
1851     xop
1852 "
1853
1854 ARCH_EXT_LIST_PPC="
1855     altivec
1856     dcbzl
1857     ldbrx
1858     power8
1859     ppc4xx
1860     vsx
1861 "
1862
1863 ARCH_EXT_LIST_X86="
1864     $ARCH_EXT_LIST_X86_SIMD
1865     cpunop
1866     i686
1867 "
1868
1869 ARCH_EXT_LIST="
1870     $ARCH_EXT_LIST_ARM
1871     $ARCH_EXT_LIST_PPC
1872     $ARCH_EXT_LIST_X86
1873     $ARCH_EXT_LIST_MIPS
1874     $ARCH_EXT_LIST_LOONGSON
1875 "
1876
1877 ARCH_FEATURES="
1878     aligned_stack
1879     fast_64bit
1880     fast_clz
1881     fast_cmov
1882     local_aligned
1883     simd_align_16
1884     simd_align_32
1885 "
1886
1887 BUILTIN_LIST="
1888     atomic_cas_ptr
1889     machine_rw_barrier
1890     MemoryBarrier
1891     mm_empty
1892     rdtsc
1893     sarestart
1894     sem_timedwait
1895     sync_val_compare_and_swap
1896 "
1897 HAVE_LIST_CMDLINE="
1898     inline_asm
1899     symver
1900     x86asm
1901 "
1902
1903 HAVE_LIST_PUB="
1904     bigendian
1905     fast_unaligned
1906 "
1907
1908 HEADERS_LIST="
1909     arpa_inet_h
1910     asm_types_h
1911     cdio_paranoia_h
1912     cdio_paranoia_paranoia_h
1913     cuda_h
1914     dispatch_dispatch_h
1915     dev_bktr_ioctl_bt848_h
1916     dev_bktr_ioctl_meteor_h
1917     dev_ic_bt8xx_h
1918     dev_video_bktr_ioctl_bt848_h
1919     dev_video_meteor_ioctl_meteor_h
1920     direct_h
1921     dirent_h
1922     dxgidebug_h
1923     dxva_h
1924     ES2_gl_h
1925     gsm_h
1926     io_h
1927     machine_ioctl_bt848_h
1928     machine_ioctl_meteor_h
1929     malloc_h
1930     opencv2_core_core_c_h
1931     OpenGL_gl3_h
1932     poll_h
1933     sys_param_h
1934     sys_resource_h
1935     sys_select_h
1936     sys_soundcard_h
1937     sys_time_h
1938     sys_un_h
1939     sys_videoio_h
1940     termios_h
1941     udplite_h
1942     unistd_h
1943     valgrind_valgrind_h
1944     windows_h
1945     winsock2_h
1946 "
1947
1948 INTRINSICS_LIST="
1949     intrinsics_neon
1950 "
1951
1952 COMPLEX_FUNCS="
1953     cabs
1954     cexp
1955 "
1956
1957 MATH_FUNCS="
1958     atanf
1959     atan2f
1960     cbrt
1961     cbrtf
1962     copysign
1963     cosf
1964     erf
1965     exp2
1966     exp2f
1967     expf
1968     hypot
1969     isfinite
1970     isinf
1971     isnan
1972     ldexpf
1973     llrint
1974     llrintf
1975     log2
1976     log2f
1977     log10f
1978     lrint
1979     lrintf
1980     powf
1981     rint
1982     round
1983     roundf
1984     sinf
1985     trunc
1986     truncf
1987 "
1988
1989 SYSTEM_FUNCS="
1990     access
1991     aligned_malloc
1992     arc4random
1993     clock_gettime
1994     closesocket
1995     CommandLineToArgvW
1996     fcntl
1997     getaddrinfo
1998     gethrtime
1999     getopt
2000     GetProcessAffinityMask
2001     GetProcessMemoryInfo
2002     GetProcessTimes
2003     getrusage
2004     GetSystemTimeAsFileTime
2005     gettimeofday
2006     glob
2007     glXGetProcAddress
2008     gmtime_r
2009     inet_aton
2010     isatty
2011     kbhit
2012     localtime_r
2013     lstat
2014     lzo1x_999_compress
2015     mach_absolute_time
2016     MapViewOfFile
2017     memalign
2018     mkstemp
2019     mmap
2020     mprotect
2021     nanosleep
2022     PeekNamedPipe
2023     posix_memalign
2024     pthread_cancel
2025     sched_getaffinity
2026     SetConsoleTextAttribute
2027     SetConsoleCtrlHandler
2028     setmode
2029     setrlimit
2030     Sleep
2031     strerror_r
2032     sysconf
2033     sysctl
2034     usleep
2035     UTGetOSTypeFromString
2036     VirtualAlloc
2037     wglGetProcAddress
2038 "
2039
2040 TOOLCHAIN_FEATURES="
2041     as_arch_directive
2042     as_fpu_directive
2043     as_func
2044     as_object_arch
2045     asm_mod_q
2046     blocks_extension
2047     ebp_available
2048     ebx_available
2049     gnu_as
2050     gnu_windres
2051     ibm_asm
2052     inline_asm_direct_symbol_refs
2053     inline_asm_labels
2054     inline_asm_nonlocal_labels
2055     pragma_deprecated
2056     rsync_contimeout
2057     symver_asm_label
2058     symver_gnu_asm
2059     vfp_args
2060     xform_asm
2061     xmm_clobbers
2062 "
2063
2064 TYPES_LIST="
2065     CONDITION_VARIABLE_Ptr
2066     kCMVideoCodecType_HEVC
2067     socklen_t
2068     struct_addrinfo
2069     struct_group_source_req
2070     struct_ip_mreq_source
2071     struct_ipv6_mreq
2072     struct_msghdr_msg_flags
2073     struct_pollfd
2074     struct_rusage_ru_maxrss
2075     struct_sctp_event_subscribe
2076     struct_sockaddr_in6
2077     struct_sockaddr_sa_len
2078     struct_sockaddr_storage
2079     struct_stat_st_mtim_tv_nsec
2080     struct_v4l2_frmivalenum_discrete
2081 "
2082
2083 HAVE_LIST="
2084     $ARCH_EXT_LIST
2085     $(add_suffix _external $ARCH_EXT_LIST)
2086     $(add_suffix _inline   $ARCH_EXT_LIST)
2087     $ARCH_FEATURES
2088     $ATOMICS_LIST
2089     $BUILTIN_LIST
2090     $COMPLEX_FUNCS
2091     $HAVE_LIST_CMDLINE
2092     $HAVE_LIST_PUB
2093     $HEADERS_LIST
2094     $INTRINSICS_LIST
2095     $MATH_FUNCS
2096     $SYSTEM_FUNCS
2097     $THREADS_LIST
2098     $TOOLCHAIN_FEATURES
2099     $TYPES_LIST
2100     atomics_native
2101     dos_paths
2102     libc_msvcrt
2103     makeinfo
2104     makeinfo_html
2105     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2106     perl
2107     pod2man
2108     section_data_rel_ro
2109     texi2html
2110     threads
2111     uwp
2112     vaapi_drm
2113     vaapi_x11
2114     vdpau_x11
2115     winrt
2116     wincrypt
2117 "
2118
2119 # options emitted with CONFIG_ prefix but not available on the command line
2120 CONFIG_EXTRA="
2121     aandcttables
2122     ac3dsp
2123     adts_header
2124     audio_frame_queue
2125     audiodsp
2126     blockdsp
2127     bswapdsp
2128     cabac
2129     cbs
2130     cbs_h264
2131     cbs_h265
2132     cbs_mpeg2
2133     dirac_parse
2134     dvprofile
2135     exif
2136     faandct
2137     faanidct
2138     fdctdsp
2139     flacdsp
2140     fmtconvert
2141     frame_thread_encoder
2142     g722dsp
2143     golomb
2144     gplv3
2145     h263dsp
2146     h264chroma
2147     h264dsp
2148     h264parse
2149     h264pred
2150     h264qpel
2151     hevcparse
2152     hpeldsp
2153     huffman
2154     huffyuvdsp
2155     huffyuvencdsp
2156     idctdsp
2157     iirfilter
2158     mdct15
2159     intrax8
2160     iso_media
2161     ividsp
2162     jpegtables
2163     lgplv3
2164     libx262
2165     llauddsp
2166     llviddsp
2167     llvidencdsp
2168     lpc
2169     lzf
2170     me_cmp
2171     mpeg_er
2172     mpegaudio
2173     mpegaudiodsp
2174     mpegaudioheader
2175     mpegvideo
2176     mpegvideoenc
2177     mss34dsp
2178     pixblockdsp
2179     qpeldsp
2180     qsv
2181     qsvdec
2182     qsvenc
2183     qsvvpp
2184     rangecoder
2185     riffdec
2186     riffenc
2187     rtpdec
2188     rtpenc_chain
2189     rv34dsp
2190     sinewin
2191     snappy
2192     srtp
2193     startcode
2194     texturedsp
2195     texturedspenc
2196     tpeldsp
2197     vaapi_1
2198     vaapi_encode
2199     vc1dsp
2200     videodsp
2201     vp3dsp
2202     vp56dsp
2203     vp8dsp
2204     wma_freqs
2205     wmv2dsp
2206 "
2207
2208 CMDLINE_SELECT="
2209     $ARCH_EXT_LIST
2210     $CONFIG_LIST
2211     $HAVE_LIST_CMDLINE
2212     $THREADS_LIST
2213     asm
2214     cross_compile
2215     debug
2216     extra_warnings
2217     logging
2218     lto
2219     optimizations
2220     rpath
2221     stripping
2222 "
2223
2224 PATHS_LIST="
2225     bindir
2226     datadir
2227     docdir
2228     incdir
2229     libdir
2230     mandir
2231     pkgconfigdir
2232     prefix
2233     shlibdir
2234     install_name_dir
2235 "
2236
2237 CMDLINE_SET="
2238     $PATHS_LIST
2239     ar
2240     arch
2241     as
2242     assert_level
2243     build_suffix
2244     cc
2245     objcc
2246     cpu
2247     cross_prefix
2248     custom_allocator
2249     cxx
2250     dep_cc
2251     doxygen
2252     env
2253     extra_version
2254     gas
2255     host_cc
2256     host_cflags
2257     host_extralibs
2258     host_ld
2259     host_ldflags
2260     host_os
2261     ignore_tests
2262     install
2263     ld
2264     ln_s
2265     logfile
2266     malloc_prefix
2267     nm
2268     optflags
2269     nvccflags
2270     pkg_config
2271     pkg_config_flags
2272     progs_suffix
2273     random_seed
2274     ranlib
2275     samples
2276     strip
2277     sws_max_filter_size
2278     sysinclude
2279     sysroot
2280     target_exec
2281     target_os
2282     target_path
2283     target_samples
2284     tempprefix
2285     toolchain
2286     valgrind
2287     x86asmexe
2288 "
2289
2290 CMDLINE_APPEND="
2291     extra_cflags
2292     extra_cxxflags
2293     extra_objcflags
2294     host_cppflags
2295 "
2296
2297 # code dependency declarations
2298
2299 # architecture extensions
2300
2301 armv5te_deps="arm"
2302 armv6_deps="arm"
2303 armv6t2_deps="arm"
2304 armv8_deps="aarch64"
2305 neon_deps_any="aarch64 arm"
2306 intrinsics_neon_deps="neon"
2307 vfp_deps_any="aarch64 arm"
2308 vfpv3_deps="vfp"
2309 setend_deps="arm"
2310
2311 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2312
2313 altivec_deps="ppc"
2314 dcbzl_deps="ppc"
2315 ldbrx_deps="ppc"
2316 ppc4xx_deps="ppc"
2317 vsx_deps="altivec"
2318 power8_deps="vsx"
2319
2320 loongson2_deps="mips"
2321 loongson3_deps="mips"
2322 mips32r2_deps="mips"
2323 mips32r5_deps="mips"
2324 mips32r6_deps="mips"
2325 mips64r2_deps="mips"
2326 mips64r6_deps="mips"
2327 mipsfpu_deps="mips"
2328 mipsdsp_deps="mips"
2329 mipsdspr2_deps="mips"
2330 mmi_deps="mips"
2331 msa_deps="mipsfpu"
2332
2333 cpunop_deps="i686"
2334 x86_64_select="i686"
2335 x86_64_suggest="fast_cmov"
2336
2337 amd3dnow_deps="mmx"
2338 amd3dnowext_deps="amd3dnow"
2339 i686_deps="x86"
2340 mmx_deps="x86"
2341 mmxext_deps="mmx"
2342 sse_deps="mmxext"
2343 sse2_deps="sse"
2344 sse3_deps="sse2"
2345 ssse3_deps="sse3"
2346 sse4_deps="ssse3"
2347 sse42_deps="sse4"
2348 aesni_deps="sse42"
2349 avx_deps="sse42"
2350 xop_deps="avx"
2351 fma3_deps="avx"
2352 fma4_deps="avx"
2353 avx2_deps="avx"
2354
2355 mmx_external_deps="x86asm"
2356 mmx_inline_deps="inline_asm x86"
2357 mmx_suggest="mmx_external mmx_inline"
2358
2359 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2360     eval dep=\$${ext}_deps
2361     eval ${ext}_external_deps='"${dep}_external"'
2362     eval ${ext}_inline_deps='"${dep}_inline"'
2363     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2364 done
2365
2366 aligned_stack_if_any="aarch64 ppc x86"
2367 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2368 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2369 fast_unaligned_if_any="aarch64 ppc x86"
2370 simd_align_16_if_any="altivec neon sse"
2371 simd_align_32_if_any="avx"
2372
2373 # system capabilities
2374 symver_if_any="symver_asm_label symver_gnu_asm"
2375 valgrind_backtrace_conflict="optimizations"
2376 valgrind_backtrace_deps="valgrind_valgrind_h"
2377
2378 # threading support
2379 atomics_gcc_if="sync_val_compare_and_swap"
2380 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2381 atomics_win32_if="MemoryBarrier"
2382 atomics_native_if_any="$ATOMICS_LIST"
2383 w32threads_deps="atomics_native"
2384 threads_if_any="$THREADS_LIST"
2385
2386 # subsystems
2387 cbs_h264_select="cbs golomb"
2388 cbs_h265_select="cbs golomb"
2389 cbs_mpeg2_select="cbs"
2390 dct_select="rdft"
2391 dirac_parse_select="golomb"
2392 error_resilience_select="me_cmp"
2393 faandct_deps="faan"
2394 faandct_select="fdctdsp"
2395 faanidct_deps="faan"
2396 faanidct_select="idctdsp"
2397 h264dsp_select="startcode"
2398 hevcparse_select="golomb"
2399 frame_thread_encoder_deps="encoders threads"
2400 intrax8_select="blockdsp idctdsp"
2401 mdct_select="fft"
2402 mdct15_select="fft"
2403 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2404 mpeg_er_select="error_resilience"
2405 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2406 mpegaudiodsp_select="dct"
2407 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2408 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2409 vc1dsp_select="h264chroma qpeldsp startcode"
2410 rdft_select="fft"
2411
2412 # decoders / encoders
2413 aac_decoder_select="adts_header mdct15 mdct sinewin"
2414 aac_fixed_decoder_select="mdct sinewin"
2415 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2416 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2417 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2418 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2419 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2420 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2421 adpcm_g722_decoder_select="g722dsp"
2422 adpcm_g722_encoder_select="g722dsp"
2423 aic_decoder_select="golomb idctdsp"
2424 alac_encoder_select="lpc"
2425 als_decoder_select="bswapdsp"
2426 amrnb_decoder_select="lsp"
2427 amrwb_decoder_select="lsp"
2428 amv_decoder_select="sp5x_decoder exif"
2429 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2430 ape_decoder_select="bswapdsp llauddsp"
2431 apng_decoder_select="zlib"
2432 apng_encoder_select="llvidencdsp zlib"
2433 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2434 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2435 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2436 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2437 atrac1_decoder_select="mdct sinewin"
2438 atrac3_decoder_select="mdct"
2439 atrac3p_decoder_select="mdct sinewin"
2440 avrn_decoder_select="exif jpegtables"
2441 bink_decoder_select="blockdsp hpeldsp"
2442 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2443 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2444 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2445 clearvideo_decoder_select="idctdsp"
2446 cllc_decoder_select="bswapdsp"
2447 comfortnoise_encoder_select="lpc"
2448 cook_decoder_select="audiodsp mdct sinewin"
2449 cscd_decoder_select="lzo"
2450 cscd_decoder_suggest="zlib"
2451 dca_decoder_select="mdct"
2452 dds_decoder_select="texturedsp"
2453 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2454 dnxhd_decoder_select="blockdsp idctdsp"
2455 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2456 dolby_e_decoder_select="mdct"
2457 dvvideo_decoder_select="dvprofile idctdsp"
2458 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2459 dxa_decoder_select="zlib"
2460 dxv_decoder_select="lzf texturedsp"
2461 eac3_decoder_select="ac3_decoder"
2462 eac3_encoder_select="ac3_encoder"
2463 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2464 eatgq_decoder_select="aandcttables"
2465 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2466 exr_decoder_select="zlib"
2467 ffv1_decoder_select="rangecoder"
2468 ffv1_encoder_select="rangecoder"
2469 ffvhuff_decoder_select="huffyuv_decoder"
2470 ffvhuff_encoder_select="huffyuv_encoder"
2471 fic_decoder_select="golomb"
2472 flac_decoder_select="flacdsp"
2473 flac_encoder_select="bswapdsp flacdsp lpc"
2474 flashsv2_decoder_select="zlib"
2475 flashsv2_encoder_select="zlib"
2476 flashsv_decoder_select="zlib"
2477 flashsv_encoder_select="zlib"
2478 flv_decoder_select="h263_decoder"
2479 flv_encoder_select="h263_encoder"
2480 fourxm_decoder_select="blockdsp bswapdsp"
2481 fraps_decoder_select="bswapdsp huffman"
2482 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2483 g729_decoder_select="audiodsp"
2484 h261_decoder_select="mpegvideo"
2485 h261_encoder_select="aandcttables mpegvideoenc"
2486 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2487 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2488 h263i_decoder_select="h263_decoder"
2489 h263p_decoder_select="h263_decoder"
2490 h263p_encoder_select="h263_encoder"
2491 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2492 h264_decoder_suggest="error_resilience"
2493 hap_decoder_select="snappy texturedsp"
2494 hap_encoder_deps="libsnappy"
2495 hap_encoder_select="texturedspenc"
2496 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2497 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2498 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2499 iac_decoder_select="imc_decoder"
2500 imc_decoder_select="bswapdsp fft mdct sinewin"
2501 indeo3_decoder_select="hpeldsp"
2502 indeo4_decoder_select="ividsp"
2503 indeo5_decoder_select="ividsp"
2504 interplay_video_decoder_select="hpeldsp"
2505 jpegls_decoder_select="mjpeg_decoder"
2506 jv_decoder_select="blockdsp"
2507 lagarith_decoder_select="llviddsp"
2508 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2509 magicyuv_decoder_select="llviddsp"
2510 magicyuv_encoder_select="llvidencdsp"
2511 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2512 metasound_decoder_select="lsp mdct sinewin"
2513 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2514 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2515 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2516 mjpegb_decoder_select="mjpeg_decoder"
2517 mlp_decoder_select="mlp_parser"
2518 mlp_encoder_select="lpc"
2519 motionpixels_decoder_select="bswapdsp"
2520 mp1_decoder_select="mpegaudio"
2521 mp1float_decoder_select="mpegaudio"
2522 mp2_decoder_select="mpegaudio"
2523 mp2float_decoder_select="mpegaudio"
2524 mp3_decoder_select="mpegaudio"
2525 mp3adu_decoder_select="mpegaudio"
2526 mp3adufloat_decoder_select="mpegaudio"
2527 mp3float_decoder_select="mpegaudio"
2528 mp3on4_decoder_select="mpegaudio"
2529 mp3on4float_decoder_select="mpegaudio"
2530 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2531 mpc8_decoder_select="mpegaudiodsp"
2532 mpegvideo_decoder_select="mpegvideo"
2533 mpeg1video_decoder_select="mpegvideo"
2534 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2535 mpeg2video_decoder_select="mpegvideo"
2536 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2537 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2538 mpeg4_encoder_select="h263_encoder"
2539 msa1_decoder_select="mss34dsp"
2540 mscc_decoder_select="zlib"
2541 msmpeg4v1_decoder_select="h263_decoder"
2542 msmpeg4v2_decoder_select="h263_decoder"
2543 msmpeg4v2_encoder_select="h263_encoder"
2544 msmpeg4v3_decoder_select="h263_decoder"
2545 msmpeg4v3_encoder_select="h263_encoder"
2546 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2547 mts2_decoder_select="mss34dsp"
2548 mxpeg_decoder_select="mjpeg_decoder"
2549 nellymoser_decoder_select="mdct sinewin"
2550 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2551 nuv_decoder_select="idctdsp lzo"
2552 on2avc_decoder_select="mdct"
2553 opus_decoder_deps="swresample"
2554 opus_decoder_select="mdct15"
2555 opus_encoder_select="audio_frame_queue mdct15"
2556 png_decoder_select="zlib"
2557 png_encoder_select="llvidencdsp zlib"
2558 prores_decoder_select="blockdsp idctdsp"
2559 prores_encoder_select="fdctdsp"
2560 qcelp_decoder_select="lsp"
2561 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2562 ra_144_decoder_select="audiodsp"
2563 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2564 ralf_decoder_select="golomb"
2565 rawvideo_decoder_select="bswapdsp"
2566 rscc_decoder_select="zlib"
2567 rtjpeg_decoder_select="me_cmp"
2568 rv10_decoder_select="h263_decoder"
2569 rv10_encoder_select="h263_encoder"
2570 rv20_decoder_select="h263_decoder"
2571 rv20_encoder_select="h263_encoder"
2572 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2573 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2574 screenpresso_decoder_select="zlib"
2575 shorten_decoder_select="bswapdsp"
2576 sipr_decoder_select="lsp"
2577 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2578 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2579 sonic_decoder_select="golomb rangecoder"
2580 sonic_encoder_select="golomb rangecoder"
2581 sonic_ls_encoder_select="golomb rangecoder"
2582 sp5x_decoder_select="mjpeg_decoder"
2583 srgc_decoder_select="zlib"
2584 svq1_decoder_select="hpeldsp"
2585 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2586 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2587 svq3_decoder_suggest="zlib"
2588 tak_decoder_select="audiodsp"
2589 tdsc_decoder_select="zlib mjpeg_decoder"
2590 theora_decoder_select="vp3_decoder"
2591 thp_decoder_select="mjpeg_decoder"
2592 tiff_decoder_suggest="zlib lzma"
2593 tiff_encoder_suggest="zlib"
2594 truehd_decoder_select="mlp_parser"
2595 truehd_encoder_select="lpc"
2596 truemotion2_decoder_select="bswapdsp"
2597 truespeech_decoder_select="bswapdsp"
2598 tscc_decoder_select="zlib"
2599 twinvq_decoder_select="mdct lsp sinewin"
2600 txd_decoder_select="texturedsp"
2601 utvideo_decoder_select="bswapdsp llviddsp"
2602 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2603 vble_decoder_select="llviddsp"
2604 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2605 vc1image_decoder_select="vc1_decoder"
2606 vorbis_decoder_select="mdct"
2607 vorbis_encoder_select="mdct"
2608 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2609 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2610 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2611 vp6a_decoder_select="vp6_decoder"
2612 vp6f_decoder_select="vp6_decoder"
2613 vp7_decoder_select="h264pred videodsp vp8dsp"
2614 vp8_decoder_select="h264pred videodsp vp8dsp"
2615 vp9_decoder_select="videodsp vp9_parser"
2616 webp_decoder_select="vp8_decoder exif"
2617 wmalossless_decoder_select="llauddsp"
2618 wmapro_decoder_select="mdct sinewin wma_freqs"
2619 wmav1_decoder_select="mdct sinewin wma_freqs"
2620 wmav1_encoder_select="mdct sinewin wma_freqs"
2621 wmav2_decoder_select="mdct sinewin wma_freqs"
2622 wmav2_encoder_select="mdct sinewin wma_freqs"
2623 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2624 wmv1_decoder_select="h263_decoder"
2625 wmv1_encoder_select="h263_encoder"
2626 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2627 wmv2_encoder_select="h263_encoder wmv2dsp"
2628 wmv3_decoder_select="vc1_decoder"
2629 wmv3image_decoder_select="wmv3_decoder"
2630 xma1_decoder_select="wmapro_decoder"
2631 xma2_decoder_select="wmapro_decoder"
2632 zerocodec_decoder_select="zlib"
2633 zlib_decoder_select="zlib"
2634 zlib_encoder_select="zlib"
2635 zmbv_decoder_select="zlib"
2636 zmbv_encoder_select="zlib"
2637
2638 # hardware accelerators
2639 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2640 cuda_deps_any="libdl LoadLibrary"
2641 cuvid_deps="cuda"
2642 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2643 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2644 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2645 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2646 xvmc_deps="X11_extensions_XvMClib_h"
2647
2648 h263_vaapi_hwaccel_deps="vaapi"
2649 h263_vaapi_hwaccel_select="h263_decoder"
2650 h263_videotoolbox_hwaccel_deps="videotoolbox"
2651 h263_videotoolbox_hwaccel_select="h263_decoder"
2652 h264_cuvid_hwaccel_deps="cuda cuvid"
2653 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2654 h264_d3d11va_hwaccel_deps="d3d11va"
2655 h264_d3d11va_hwaccel_select="h264_decoder"
2656 h264_d3d11va2_hwaccel_deps="d3d11va"
2657 h264_d3d11va2_hwaccel_select="h264_decoder"
2658 h264_dxva2_hwaccel_deps="dxva2"
2659 h264_dxva2_hwaccel_select="h264_decoder"
2660 h264_mediacodec_hwaccel_deps="mediacodec"
2661 h264_mmal_hwaccel_deps="mmal"
2662 h264_nvdec_hwaccel_deps="cuda nvdec"
2663 h264_nvdec_hwaccel_select="h264_decoder"
2664 h264_qsv_hwaccel_deps="libmfx"
2665 h264_vaapi_hwaccel_deps="vaapi"
2666 h264_vaapi_hwaccel_select="h264_decoder"
2667 h264_vdpau_hwaccel_deps="vdpau"
2668 h264_vdpau_hwaccel_select="h264_decoder"
2669 h264_videotoolbox_hwaccel_deps="videotoolbox"
2670 h264_videotoolbox_hwaccel_select="h264_decoder"
2671 hevc_cuvid_hwaccel_deps="cuda cuvid"
2672 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2673 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2674 hevc_d3d11va_hwaccel_select="hevc_decoder"
2675 hevc_mediacodec_hwaccel_deps="mediacodec"
2676 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2677 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2678 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2679 hevc_dxva2_hwaccel_select="hevc_decoder"
2680 hevc_nvdec_hwaccel_deps="cuda nvdec"
2681 hevc_nvdec_hwaccel_select="hevc_decoder"
2682 hevc_qsv_hwaccel_deps="libmfx"
2683 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2684 hevc_vaapi_hwaccel_select="hevc_decoder"
2685 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2686 hevc_vdpau_hwaccel_select="hevc_decoder"
2687 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2688 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2689 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2690 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2691 mpeg_xvmc_hwaccel_deps="xvmc"
2692 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2693 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2694 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2695 mpeg1_vdpau_hwaccel_deps="vdpau"
2696 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2697 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2698 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2699 mpeg1_xvmc_hwaccel_deps="xvmc"
2700 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2701 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2702 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2703 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2704 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2705 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2706 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2707 mpeg2_dxva2_hwaccel_deps="dxva2"
2708 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2709 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2710 mpeg2_mmal_hwaccel_deps="mmal"
2711 mpeg2_qsv_hwaccel_deps="libmfx"
2712 mpeg2_vaapi_hwaccel_deps="vaapi"
2713 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2714 mpeg2_vdpau_hwaccel_deps="vdpau"
2715 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2716 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2717 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2718 mpeg2_xvmc_hwaccel_deps="xvmc"
2719 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2720 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2721 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2722 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2723 mpeg4_mmal_hwaccel_deps="mmal"
2724 mpeg4_vaapi_hwaccel_deps="vaapi"
2725 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2726 mpeg4_vdpau_hwaccel_deps="vdpau"
2727 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2728 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2729 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2730 vc1_cuvid_hwaccel_deps="cuda cuvid"
2731 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2732 vc1_d3d11va_hwaccel_deps="d3d11va"
2733 vc1_d3d11va_hwaccel_select="vc1_decoder"
2734 vc1_d3d11va2_hwaccel_deps="d3d11va"
2735 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2736 vc1_dxva2_hwaccel_deps="dxva2"
2737 vc1_dxva2_hwaccel_select="vc1_decoder"
2738 vc1_mmal_hwaccel_deps="mmal"
2739 vc1_qsv_hwaccel_deps="libmfx"
2740 vc1_vaapi_hwaccel_deps="vaapi"
2741 vc1_vaapi_hwaccel_select="vc1_decoder"
2742 vc1_vdpau_hwaccel_deps="vdpau"
2743 vc1_vdpau_hwaccel_select="vc1_decoder"
2744 vp8_cuvid_hwaccel_deps="cuda cuvid"
2745 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2746 vp9_cuvid_hwaccel_deps="cuda cuvid"
2747 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2748 vp8_mediacodec_hwaccel_deps="mediacodec"
2749 vp8_qsv_hwaccel_deps="libmfx"
2750 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2751 vp9_d3d11va_hwaccel_select="vp9_decoder"
2752 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2753 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2754 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2755 vp9_dxva2_hwaccel_select="vp9_decoder"
2756 vp9_mediacodec_hwaccel_deps="mediacodec"
2757 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2758 vp9_vaapi_hwaccel_select="vp9_decoder"
2759 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2760 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2761 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2762 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2763 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2764
2765 # hardware-accelerated codecs
2766 omx_deps="libdl pthreads"
2767 omx_rpi_select="omx"
2768 qsv_deps="libmfx"
2769 qsvdec_select="qsv"
2770 qsvenc_select="qsv"
2771 qsvvpp_select="qsv"
2772 vaapi_encode_deps="vaapi"
2773 v4l2_m2m_deps_any="linux_videodev2_h"
2774
2775 hwupload_cuda_filter_deps="cuda"
2776 scale_npp_filter_deps="cuda libnpp"
2777 scale_cuda_filter_deps="cuda_sdk"
2778 thumbnail_cuda_filter_deps="cuda_sdk"
2779
2780 nvenc_deps="cuda"
2781 nvenc_deps_any="libdl LoadLibrary"
2782 nvenc_encoder_deps="nvenc"
2783
2784 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2785 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2786 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2787 h264_cuvid_decoder_deps="cuda cuvid"
2788 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2789 h264_mediacodec_decoder_deps="mediacodec"
2790 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2791 h264_mmal_decoder_deps="mmal"
2792 h264_nvenc_encoder_deps="nvenc"
2793 h264_omx_encoder_deps="omx"
2794 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2795 h264_qsv_encoder_select="qsvenc"
2796 h264_rkmpp_decoder_deps="rkmpp"
2797 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2798 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2799 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2800 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2801 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2802 hevc_cuvid_decoder_deps="cuda cuvid"
2803 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2804 hevc_mediacodec_decoder_deps="mediacodec"
2805 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2806 hevc_nvenc_encoder_deps="nvenc"
2807 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2808 hevc_qsv_encoder_select="hevcparse qsvenc"
2809 hevc_rkmpp_decoder_deps="rkmpp"
2810 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2811 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2812 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2813 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2814 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2815 mjpeg_cuvid_decoder_deps="cuda cuvid"
2816 mjpeg_qsv_encoder_deps="libmfx"
2817 mjpeg_qsv_encoder_select="qsvenc"
2818 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2819 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2820 mpeg1_cuvid_decoder_deps="cuda cuvid"
2821 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2822 mpeg2_crystalhd_decoder_select="crystalhd"
2823 mpeg2_cuvid_decoder_deps="cuda cuvid"
2824 mpeg2_mmal_decoder_deps="mmal"
2825 mpeg2_mediacodec_decoder_deps="mediacodec"
2826 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2827 mpeg2_qsv_encoder_select="qsvenc"
2828 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2829 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2830 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2831 mpeg4_crystalhd_decoder_select="crystalhd"
2832 mpeg4_cuvid_decoder_deps="cuda cuvid"
2833 mpeg4_mediacodec_decoder_deps="mediacodec"
2834 mpeg4_mmal_decoder_deps="mmal"
2835 mpeg4_omx_encoder_deps="omx"
2836 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2837 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2838 msmpeg4_crystalhd_decoder_select="crystalhd"
2839 nvenc_h264_encoder_select="h264_nvenc_encoder"
2840 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2841 vc1_crystalhd_decoder_select="crystalhd"
2842 vc1_cuvid_decoder_deps="cuda cuvid"
2843 vc1_mmal_decoder_deps="mmal"
2844 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2845 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2846 vp8_cuvid_decoder_deps="cuda cuvid"
2847 vp8_mediacodec_decoder_deps="mediacodec"
2848 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2849 vp8_rkmpp_decoder_deps="rkmpp"
2850 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2851 vp8_vaapi_encoder_select="vaapi_encode"
2852 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2853 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2854 vp9_cuvid_decoder_deps="cuda cuvid"
2855 vp9_mediacodec_decoder_deps="mediacodec"
2856 vp9_rkmpp_decoder_deps="rkmpp"
2857 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2858 vp9_vaapi_encoder_select="vaapi_encode"
2859 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2860 wmv3_crystalhd_decoder_select="crystalhd"
2861
2862 # parsers
2863 aac_parser_select="adts_header"
2864 h264_parser_select="golomb h264dsp h264parse"
2865 hevc_parser_select="hevcparse"
2866 mpegaudio_parser_select="mpegaudioheader"
2867 mpegvideo_parser_select="mpegvideo"
2868 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2869 vc1_parser_select="vc1dsp"
2870
2871 # bitstream_filters
2872 aac_adtstoasc_bsf_select="adts_header"
2873 h264_metadata_bsf_select="cbs_h264"
2874 h264_redundant_pps_bsf_select="cbs_h264"
2875 hevc_metadata_bsf_select="cbs_h265"
2876 mjpeg2jpeg_bsf_select="jpegtables"
2877 mpeg2_metadata_bsf_select="cbs_mpeg2"
2878 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2879
2880 # external libraries
2881 aac_at_decoder_deps="audiotoolbox"
2882 ac3_at_decoder_deps="audiotoolbox"
2883 ac3_at_decoder_select="ac3_parser"
2884 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2885 alac_at_decoder_deps="audiotoolbox"
2886 amr_nb_at_decoder_deps="audiotoolbox"
2887 avisynth_deps_any="libdl LoadLibrary"
2888 avisynth_demuxer_deps="avisynth"
2889 avisynth_demuxer_select="riffdec"
2890 eac3_at_decoder_deps="audiotoolbox"
2891 eac3_at_decoder_select="ac3_parser"
2892 gsm_ms_at_decoder_deps="audiotoolbox"
2893 ilbc_at_decoder_deps="audiotoolbox"
2894 mp1_at_decoder_deps="audiotoolbox"
2895 mp2_at_decoder_deps="audiotoolbox"
2896 mp3_at_decoder_deps="audiotoolbox"
2897 mp1_at_decoder_select="mpegaudioheader"
2898 mp2_at_decoder_select="mpegaudioheader"
2899 mp3_at_decoder_select="mpegaudioheader"
2900 pcm_alaw_at_decoder_deps="audiotoolbox"
2901 pcm_mulaw_at_decoder_deps="audiotoolbox"
2902 qdmc_at_decoder_deps="audiotoolbox"
2903 qdm2_at_decoder_deps="audiotoolbox"
2904 aac_at_encoder_deps="audiotoolbox"
2905 aac_at_encoder_select="audio_frame_queue"
2906 alac_at_encoder_deps="audiotoolbox"
2907 alac_at_encoder_select="audio_frame_queue"
2908 ilbc_at_encoder_deps="audiotoolbox"
2909 ilbc_at_encoder_select="audio_frame_queue"
2910 pcm_alaw_at_encoder_deps="audiotoolbox"
2911 pcm_alaw_at_encoder_select="audio_frame_queue"
2912 pcm_mulaw_at_encoder_deps="audiotoolbox"
2913 pcm_mulaw_at_encoder_select="audio_frame_queue"
2914 chromaprint_muxer_deps="chromaprint"
2915 h264_videotoolbox_encoder_deps="pthreads"
2916 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2917 libcelt_decoder_deps="libcelt"
2918 libfdk_aac_decoder_deps="libfdk_aac"
2919 libfdk_aac_encoder_deps="libfdk_aac"
2920 libfdk_aac_encoder_select="audio_frame_queue"
2921 libgme_demuxer_deps="libgme"
2922 libgsm_decoder_deps="libgsm"
2923 libgsm_encoder_deps="libgsm"
2924 libgsm_ms_decoder_deps="libgsm"
2925 libgsm_ms_encoder_deps="libgsm"
2926 libilbc_decoder_deps="libilbc"
2927 libilbc_encoder_deps="libilbc"
2928 libkvazaar_encoder_deps="libkvazaar"
2929 libmodplug_demuxer_deps="libmodplug"
2930 libmp3lame_encoder_deps="libmp3lame"
2931 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2932 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2933 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2934 libopencore_amrnb_encoder_select="audio_frame_queue"
2935 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2936 libopenh264_decoder_deps="libopenh264"
2937 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2938 libopenh264_encoder_deps="libopenh264"
2939 libopenjpeg_decoder_deps="libopenjpeg"
2940 libopenjpeg_encoder_deps="libopenjpeg"
2941 libopenmpt_demuxer_deps="libopenmpt"
2942 libopus_decoder_deps="libopus"
2943 libopus_encoder_deps="libopus"
2944 libopus_encoder_select="audio_frame_queue"
2945 librsvg_decoder_deps="librsvg"
2946 libshine_encoder_deps="libshine"
2947 libshine_encoder_select="audio_frame_queue"
2948 libspeex_decoder_deps="libspeex"
2949 libspeex_encoder_deps="libspeex"
2950 libspeex_encoder_select="audio_frame_queue"
2951 libtheora_encoder_deps="libtheora"
2952 libtwolame_encoder_deps="libtwolame"
2953 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2954 libvorbis_decoder_deps="libvorbis"
2955 libvorbis_encoder_deps="libvorbis libvorbisenc"
2956 libvorbis_encoder_select="audio_frame_queue"
2957 libvpx_vp8_decoder_deps="libvpx"
2958 libvpx_vp8_encoder_deps="libvpx"
2959 libvpx_vp9_decoder_deps="libvpx"
2960 libvpx_vp9_encoder_deps="libvpx"
2961 libwavpack_encoder_deps="libwavpack"
2962 libwavpack_encoder_select="audio_frame_queue"
2963 libwebp_encoder_deps="libwebp"
2964 libwebp_anim_encoder_deps="libwebp"
2965 libx262_encoder_deps="libx262"
2966 libx264_encoder_deps="libx264"
2967 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2968 libx264rgb_encoder_select="libx264_encoder"
2969 libx265_encoder_deps="libx265"
2970 libxavs_encoder_deps="libxavs"
2971 libxvid_encoder_deps="libxvid"
2972 libzvbi_teletext_decoder_deps="libzvbi"
2973 videotoolbox_suggest="coreservices"
2974 videotoolbox_deps="corefoundation coremedia corevideo"
2975 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2976
2977 # demuxers / muxers
2978 ac3_demuxer_select="ac3_parser"
2979 aiff_muxer_select="iso_media"
2980 asf_demuxer_select="riffdec"
2981 asf_o_demuxer_select="riffdec"
2982 asf_muxer_select="riffenc"
2983 asf_stream_muxer_select="asf_muxer"
2984 avi_demuxer_select="iso_media riffdec exif"
2985 avi_muxer_select="riffenc"
2986 caf_demuxer_select="iso_media riffdec"
2987 caf_muxer_select="iso_media"
2988 dash_muxer_select="mp4_muxer"
2989 dash_demuxer_deps="libxml2"
2990 dirac_demuxer_select="dirac_parser"
2991 dts_demuxer_select="dca_parser"
2992 dtshd_demuxer_select="dca_parser"
2993 dv_demuxer_select="dvprofile"
2994 dv_muxer_select="dvprofile"
2995 dxa_demuxer_select="riffdec"
2996 eac3_demuxer_select="ac3_parser"
2997 f4v_muxer_select="mov_muxer"
2998 fifo_muxer_deps="threads"
2999 flac_demuxer_select="flac_parser"
3000 hds_muxer_select="flv_muxer"
3001 hls_muxer_select="mpegts_muxer"
3002 hls_muxer_suggest="gcrypt openssl"
3003 image2_alias_pix_demuxer_select="image2_demuxer"
3004 image2_brender_pix_demuxer_select="image2_demuxer"
3005 ipod_muxer_select="mov_muxer"
3006 ismv_muxer_select="mov_muxer"
3007 matroska_audio_muxer_select="matroska_muxer"
3008 matroska_demuxer_select="iso_media riffdec"
3009 matroska_demuxer_suggest="bzlib lzo zlib"
3010 matroska_muxer_select="iso_media riffenc"
3011 mmf_muxer_select="riffenc"
3012 mov_demuxer_select="iso_media riffdec"
3013 mov_demuxer_suggest="zlib"
3014 mov_muxer_select="iso_media riffenc rtpenc_chain"
3015 mp3_demuxer_select="mpegaudio_parser"
3016 mp3_muxer_select="mpegaudioheader"
3017 mp4_muxer_select="mov_muxer"
3018 mpegts_demuxer_select="iso_media"
3019 mpegts_muxer_select="adts_muxer latm_muxer"
3020 mpegtsraw_demuxer_select="mpegts_demuxer"
3021 mxf_d10_muxer_select="mxf_muxer"
3022 mxf_opatom_muxer_select="mxf_muxer"
3023 nut_muxer_select="riffenc"
3024 nuv_demuxer_select="riffdec"
3025 oga_muxer_select="ogg_muxer"
3026 ogg_demuxer_select="dirac_parse"
3027 ogv_muxer_select="ogg_muxer"
3028 opus_muxer_select="ogg_muxer"
3029 psp_muxer_select="mov_muxer"
3030 rtp_demuxer_select="sdp_demuxer"
3031 rtp_muxer_select="golomb"
3032 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3033 rtsp_demuxer_select="http_protocol rtpdec"
3034 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3035 sap_demuxer_select="sdp_demuxer"
3036 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3037 sdp_demuxer_select="rtpdec"
3038 smoothstreaming_muxer_select="ismv_muxer"
3039 spdif_demuxer_select="adts_header"
3040 spdif_muxer_select="adts_header"
3041 spx_muxer_select="ogg_muxer"
3042 swf_demuxer_suggest="zlib"
3043 tak_demuxer_select="tak_parser"
3044 tg2_muxer_select="mov_muxer"
3045 tgp_muxer_select="mov_muxer"
3046 vobsub_demuxer_select="mpegps_demuxer"
3047 w64_demuxer_select="wav_demuxer"
3048 w64_muxer_select="wav_muxer"
3049 wav_demuxer_select="riffdec"
3050 wav_muxer_select="riffenc"
3051 webm_muxer_select="iso_media riffenc"
3052 webm_dash_manifest_demuxer_select="matroska_demuxer"
3053 wtv_demuxer_select="mpegts_demuxer riffdec"
3054 wtv_muxer_select="mpegts_muxer riffenc"
3055 xmv_demuxer_select="riffdec"
3056 xwma_demuxer_select="riffdec"
3057
3058 # indevs / outdevs
3059 alsa_indev_deps="alsa"
3060 alsa_outdev_deps="alsa"
3061 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3062 avfoundation_indev_suggest="coregraphics applicationservices"
3063 avfoundation_indev_extralibs="-framework Foundation"
3064 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3065 caca_outdev_deps="libcaca"
3066 decklink_deps_any="libdl LoadLibrary"
3067 decklink_indev_deps="decklink threads"
3068 decklink_indev_extralibs="-lstdc++"
3069 decklink_outdev_deps="decklink threads"
3070 decklink_outdev_extralibs="-lstdc++"
3071 libndi_newtek_indev_deps="libndi_newtek"
3072 libndi_newtek_indev_extralibs="-lndi"
3073 libndi_newtek_outdev_deps="libndi_newtek"
3074 libndi_newtek_outdev_extralibs="-lndi"
3075 dshow_indev_deps="IBaseFilter"
3076 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3077 fbdev_indev_deps="linux_fb_h"
3078 fbdev_outdev_deps="linux_fb_h"
3079 gdigrab_indev_deps="CreateDIBSection"
3080 gdigrab_indev_extralibs="-lgdi32"
3081 gdigrab_indev_select="bmp_decoder"
3082 iec61883_indev_deps="libiec61883"
3083 jack_indev_deps="libjack"
3084 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3085 kmsgrab_indev_deps="libdrm"
3086 lavfi_indev_deps="avfilter"
3087 libcdio_indev_deps="libcdio"
3088 libdc1394_indev_deps="libdc1394"
3089 openal_indev_deps="openal"
3090 opengl_outdev_deps="opengl"
3091 oss_indev_deps_any="sys_soundcard_h"
3092 oss_outdev_deps_any="sys_soundcard_h"
3093 pulse_indev_deps="libpulse"
3094 pulse_outdev_deps="libpulse"
3095 sdl2_outdev_deps="sdl2"
3096 sndio_indev_deps="sndio"
3097 sndio_outdev_deps="sndio"
3098 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3099 v4l2_indev_suggest="libv4l2"
3100 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3101 v4l2_outdev_suggest="libv4l2"
3102 vfwcap_indev_deps="vfw32 vfwcap_defines"
3103 xcbgrab_indev_deps="libxcb"
3104 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3105 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3106 xv_outdev_extralibs="-lXv -lX11 -lXext"
3107
3108 # protocols
3109 async_protocol_deps="threads"
3110 bluray_protocol_deps="libbluray"
3111 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3112 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3113 ffrtmpcrypt_protocol_select="tcp_protocol"
3114 ffrtmphttp_protocol_conflict="librtmp_protocol"
3115 ffrtmphttp_protocol_select="http_protocol"
3116 ftp_protocol_select="tcp_protocol"
3117 gopher_protocol_select="network"
3118 http_protocol_select="tcp_protocol"
3119 http_protocol_suggest="zlib"
3120 httpproxy_protocol_select="tcp_protocol"
3121 httpproxy_protocol_suggest="zlib"
3122 https_protocol_select="tls_protocol"
3123 https_protocol_suggest="zlib"
3124 icecast_protocol_select="http_protocol"
3125 librtmp_protocol_deps="librtmp"
3126 librtmpe_protocol_deps="librtmp"
3127 librtmps_protocol_deps="librtmp"
3128 librtmpt_protocol_deps="librtmp"
3129 librtmpte_protocol_deps="librtmp"
3130 libsmbclient_protocol_deps="libsmbclient gplv3"
3131 libssh_protocol_deps="libssh"
3132 mmsh_protocol_select="http_protocol"
3133 mmst_protocol_select="network"
3134 rtmp_protocol_conflict="librtmp_protocol"
3135 rtmp_protocol_select="tcp_protocol"
3136 rtmp_protocol_suggest="zlib"
3137 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3138 rtmpe_protocol_suggest="zlib"
3139 rtmps_protocol_conflict="librtmp_protocol"
3140 rtmps_protocol_select="tls_protocol"
3141 rtmps_protocol_suggest="zlib"
3142 rtmpt_protocol_select="ffrtmphttp_protocol"
3143 rtmpt_protocol_suggest="zlib"
3144 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3145 rtmpte_protocol_suggest="zlib"
3146 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3147 rtmpts_protocol_suggest="zlib"
3148 rtp_protocol_select="udp_protocol"
3149 schannel_conflict="openssl gnutls"
3150 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3151 sctp_protocol_select="network"
3152 securetransport_conflict="openssl gnutls"
3153 srtp_protocol_select="rtp_protocol srtp"
3154 tcp_protocol_select="network"
3155 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3156 tls_protocol_select="tcp_protocol"
3157 udp_protocol_select="network"
3158 udplite_protocol_select="network"
3159 unix_protocol_deps="sys_un_h"
3160 unix_protocol_select="network"
3161
3162 # filters
3163 afftfilt_filter_deps="avcodec"
3164 afftfilt_filter_select="fft"
3165 afir_filter_deps="avcodec"
3166 afir_filter_select="fft"
3167 amovie_filter_deps="avcodec avformat"
3168 aresample_filter_deps="swresample"
3169 ass_filter_deps="libass"
3170 atempo_filter_deps="avcodec"
3171 atempo_filter_select="rdft"
3172 azmq_filter_deps="libzmq"
3173 blackframe_filter_deps="gpl"
3174 boxblur_filter_deps="gpl"
3175 bs2b_filter_deps="libbs2b"
3176 colormatrix_filter_deps="gpl"
3177 coreimage_filter_deps="coreimage appkit"
3178 coreimage_filter_extralibs="-framework OpenGL"
3179 coreimagesrc_filter_deps="coreimage appkit"
3180 coreimagesrc_filter_extralibs="-framework OpenGL"
3181 cover_rect_filter_deps="avcodec avformat gpl"
3182 cropdetect_filter_deps="gpl"
3183 deinterlace_qsv_filter_deps="libmfx"
3184 deinterlace_vaapi_filter_deps="vaapi"
3185 delogo_filter_deps="gpl"
3186 deshake_filter_select="pixelutils"
3187 deshake_filter_suggest="opencl"
3188 drawtext_filter_deps="libfreetype"
3189 drawtext_filter_suggest="libfontconfig libfribidi"
3190 elbg_filter_deps="avcodec"
3191 eq_filter_deps="gpl"
3192 fftfilt_filter_deps="avcodec"
3193 fftfilt_filter_select="rdft"
3194 find_rect_filter_deps="avcodec avformat gpl"
3195 firequalizer_filter_deps="avcodec"
3196 firequalizer_filter_select="rdft"
3197 flite_filter_deps="libflite"
3198 framerate_filter_select="pixelutils"
3199 frei0r_filter_deps="frei0r libdl"
3200 frei0r_src_filter_deps="frei0r libdl"
3201 fspp_filter_deps="gpl"
3202 geq_filter_deps="gpl"
3203 histeq_filter_deps="gpl"
3204 hqdn3d_filter_deps="gpl"
3205 interlace_filter_deps="gpl"
3206 kerndeint_filter_deps="gpl"
3207 ladspa_filter_deps="ladspa libdl"
3208 mcdeint_filter_deps="avcodec gpl"
3209 movie_filter_deps="avcodec avformat"
3210 mpdecimate_filter_deps="gpl"
3211 mpdecimate_filter_select="pixelutils"
3212 mptestsrc_filter_deps="gpl"
3213 negate_filter_deps="lut_filter"
3214 nnedi_filter_deps="gpl"
3215 ocr_filter_deps="libtesseract"
3216 ocv_filter_deps="libopencv"
3217 overlay_qsv_filter_deps="libmfx"
3218 overlay_qsv_filter_select="qsvvpp"
3219 owdenoise_filter_deps="gpl"
3220 pan_filter_deps="swresample"
3221 perspective_filter_deps="gpl"
3222 phase_filter_deps="gpl"
3223 pp7_filter_deps="gpl"
3224 pp_filter_deps="gpl postproc"
3225 pullup_filter_deps="gpl"
3226 removelogo_filter_deps="avcodec avformat swscale"
3227 repeatfields_filter_deps="gpl"
3228 resample_filter_deps="avresample"
3229 rubberband_filter_deps="librubberband"
3230 sab_filter_deps="gpl swscale"
3231 scale2ref_filter_deps="swscale"
3232 scale_filter_deps="swscale"
3233 scale_qsv_filter_deps="libmfx"
3234 select_filter_select="pixelutils"
3235 showcqt_filter_deps="avcodec avformat swscale"
3236 showcqt_filter_suggest="libfontconfig libfreetype"
3237 showcqt_filter_select="fft"
3238 showfreqs_filter_deps="avcodec"
3239 showfreqs_filter_select="fft"
3240 showspectrum_filter_deps="avcodec"
3241 showspectrum_filter_select="fft"
3242 showspectrumpic_filter_deps="avcodec"
3243 showspectrumpic_filter_select="fft"
3244 signature_filter_deps="gpl avcodec avformat"
3245 smartblur_filter_deps="gpl swscale"
3246 sofalizer_filter_deps="libmysofa avcodec"
3247 sofalizer_filter_select="fft"
3248 spectrumsynth_filter_deps="avcodec"
3249 spectrumsynth_filter_select="fft"
3250 spp_filter_deps="gpl avcodec"
3251 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3252 stereo3d_filter_deps="gpl"
3253 subtitles_filter_deps="avformat avcodec libass"
3254 super2xsai_filter_deps="gpl"
3255 pixfmts_super2xsai_test_deps="super2xsai_filter"
3256 tinterlace_filter_deps="gpl"
3257 tinterlace_merge_test_deps="tinterlace_filter"
3258 tinterlace_pad_test_deps="tinterlace_filter"
3259 tonemap_filter_deps="const_nan"
3260 uspp_filter_deps="gpl avcodec"
3261 unsharp_filter_suggest="opencl"
3262 vaguedenoiser_filter_deps="gpl"
3263 vidstabdetect_filter_deps="libvidstab"
3264 vidstabtransform_filter_deps="libvidstab"
3265 libvmaf_filter_deps="libvmaf"
3266 zmq_filter_deps="libzmq"
3267 zoompan_filter_deps="swscale"
3268 zscale_filter_deps="libzimg const_nan"
3269 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3270 vpp_qsv_filter_deps="libmfx"
3271 vpp_qsv_filter_select="qsvvpp"
3272
3273 # examples
3274 avio_dir_cmd_deps="avformat avutil"
3275 avio_reading_deps="avformat avcodec avutil"
3276 decode_audio_example_deps="avcodec avutil"
3277 decode_video_example_deps="avcodec avutil"
3278 demuxing_decoding_example_deps="avcodec avformat avutil"
3279 encode_audio_example_deps="avcodec avutil"
3280 encode_video_example_deps="avcodec avutil"
3281 extract_mvs_example_deps="avcodec avformat avutil"
3282 filter_audio_example_deps="avfilter avutil"
3283 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3284 filtering_video_example_deps="avfilter avcodec avformat avutil"
3285 http_multiclient_example_deps="avformat avutil fork"
3286 hw_decode_example_deps="avcodec avformat avutil"
3287 metadata_example_deps="avformat avutil"
3288 muxing_example_deps="avcodec avformat avutil swscale"
3289 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3290 remuxing_example_deps="avcodec avformat avutil"
3291 resampling_audio_example_deps="avutil swresample"
3292 scaling_video_example_deps="avutil swscale"
3293 transcode_aac_example_deps="avcodec avformat swresample"
3294 transcoding_example_deps="avfilter avcodec avformat avutil"
3295
3296 # EXTRALIBS_LIST
3297 cpu_init_extralibs="pthreads_extralibs"
3298 cws2fws_extralibs="zlib_extralibs"
3299
3300 # libraries, in linking order
3301 avcodec_deps="avutil"
3302 avcodec_suggest="libm"
3303 avcodec_select="null_bsf"
3304 avdevice_deps="avformat avcodec avutil"
3305 avdevice_suggest="libm"
3306 avfilter_deps="avutil"
3307 avfilter_suggest="libm"
3308 avformat_deps="avcodec avutil"
3309 avformat_suggest="libm network zlib"
3310 avresample_deps="avutil"
3311 avresample_suggest="libm"
3312 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3313 postproc_deps="avutil gpl"
3314 postproc_suggest="libm"
3315 swresample_deps="avutil"
3316 swresample_suggest="libm libsoxr"
3317 swscale_deps="avutil"
3318 swscale_suggest="libm"
3319
3320 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3321 avfilter_extralibs="pthreads_extralibs"
3322 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3323
3324 # programs
3325 ffmpeg_deps="avcodec avfilter avformat swresample"
3326 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3327                null_filter
3328                trim_filter"
3329 ffmpeg_suggest="ole32 psapi shell32"
3330 ffplay_deps="avcodec avformat swscale swresample sdl2"
3331 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3332 ffplay_suggest="shell32"
3333 ffprobe_deps="avcodec avformat"
3334 ffprobe_suggest="shell32"
3335 ffserver_deps="avformat fork sarestart"
3336 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3337
3338 # documentation
3339 podpages_deps="perl"
3340 manpages_deps="perl pod2man"
3341 htmlpages_deps="perl"
3342 htmlpages_deps_any="makeinfo_html texi2html"
3343 txtpages_deps="perl makeinfo"
3344 doc_deps_any="manpages htmlpages podpages txtpages"
3345
3346 # default parameters
3347
3348 logfile="ffbuild/config.log"
3349
3350 # installation paths
3351 prefix_default="/usr/local"
3352 bindir_default='${prefix}/bin'
3353 datadir_default='${prefix}/share/ffmpeg'
3354 docdir_default='${prefix}/share/doc/ffmpeg'
3355 incdir_default='${prefix}/include'
3356 libdir_default='${prefix}/lib'
3357 mandir_default='${prefix}/share/man'
3358
3359 # toolchain
3360 ar_default="ar"
3361 cc_default="gcc"
3362 cxx_default="g++"
3363 host_cc_default="gcc"
3364 doxygen_default="doxygen"
3365 install="install"
3366 ln_s_default="ln -s -f"
3367 nm_default="nm -g"
3368 pkg_config_default=pkg-config
3369 ranlib_default="ranlib"
3370 strip_default="strip"
3371 version_script='--version-script'
3372 x86asmexe_default="nasm"
3373 windres_default="windres"
3374 nvcc_default="nvcc"
3375 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3376 striptype="direct"
3377
3378 # OS
3379 target_os_default=$(tolower $(uname -s))
3380 host_os=$target_os_default
3381
3382 # machine
3383 if test "$target_os_default" = aix; then
3384     arch_default=$(uname -p)
3385     strip_default="strip -X32_64"
3386 else
3387     arch_default=$(uname -m)
3388 fi
3389 cpu="generic"
3390 intrinsics="none"
3391
3392 # configurable options
3393 enable $PROGRAM_LIST
3394 enable $DOCUMENT_LIST
3395 enable $EXAMPLE_LIST
3396 enable $(filter_out avresample $LIBRARY_LIST)
3397 enable stripping
3398
3399 enable asm
3400 enable debug
3401 enable doc
3402 enable faan faandct faanidct
3403 enable optimizations
3404 enable runtime_cpudetect
3405 enable safe_bitstream_reader
3406 enable static
3407 enable swscale_alpha
3408 enable valgrind_backtrace
3409
3410 sws_max_filter_size_default=256
3411 set_default sws_max_filter_size
3412
3413 # internal components are enabled by default
3414 enable $EXTRALIBS_LIST
3415
3416 # Avoid external, non-system, libraries getting enabled by dependency resolution
3417 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3418
3419 # build settings
3420 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3421 LIBPREF="lib"
3422 LIBSUF=".a"
3423 FULLNAME='$(NAME)$(BUILDSUF)'
3424 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3425 SLIBPREF="lib"
3426 SLIBSUF=".so"
3427 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3428 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3429 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3430 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3431 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3432 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3433 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3434
3435 asflags_filter=echo
3436 cflags_filter=echo
3437 ldflags_filter=echo
3438
3439 AS_C='-c'
3440 AS_O='-o $@'
3441 CC_C='-c'
3442 CC_E='-E -o $@'
3443 CC_O='-o $@'
3444 CXX_C='-c'
3445 CXX_O='-o $@'
3446 OBJCC_C='-c'
3447 OBJCC_E='-E -o $@'
3448 OBJCC_O='-o $@'
3449 X86ASM_O='-o $@'
3450 LD_O='-o $@'
3451 LD_LIB='-l%'
3452 LD_PATH='-L'
3453 HOSTCC_C='-c'
3454 HOSTCC_E='-E -o $@'
3455 HOSTCC_O='-o $@'
3456 HOSTLD_O='-o $@'
3457 NVCC_C='-c'
3458 NVCC_O='-o $@'
3459
3460 host_extralibs='-lm'
3461 host_cflags_filter=echo
3462 host_ldflags_filter=echo
3463
3464 target_path='$(CURDIR)'
3465
3466 # since the object filename is not given with the -MM flag, the compiler
3467 # is only able to print the basename, and we must add the path ourselves
3468 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3469 DEPFLAGS='-MM'
3470
3471 mkdir -p ffbuild
3472
3473 # find source path
3474 if test -f configure; then
3475     source_path=.
3476 else
3477     source_path=$(cd $(dirname "$0"); pwd)
3478     case "$source_path" in
3479         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3480     esac
3481     test -e "$source_path/config.h" &&
3482         die "Out of tree builds are impossible with config.h in source dir."
3483 fi
3484
3485 for v in "$@"; do
3486     r=${v#*=}
3487     l=${v%"$r"}
3488     r=$(sh_quote "$r")
3489     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3490 done
3491
3492 find_things(){
3493     thing=$1
3494     pattern=$2
3495     file=$source_path/$3
3496     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3497 }
3498
3499 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3500 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3501 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3502 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3503 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3504 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3505 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3506 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3507 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3508
3509 find_things_extern(){
3510     thing=$1
3511     pattern=$2
3512     file=$source_path/$3
3513     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3514 }
3515
3516 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3517 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3518
3519 AVCODEC_COMPONENTS_LIST="
3520     $BSF_LIST
3521     $DECODER_LIST
3522     $ENCODER_LIST
3523     $HWACCEL_LIST
3524     $PARSER_LIST
3525 "
3526
3527 AVDEVICE_COMPONENTS_LIST="
3528     $INDEV_LIST
3529     $OUTDEV_LIST
3530 "
3531
3532 AVFILTER_COMPONENTS_LIST="
3533     $FILTER_LIST
3534 "
3535
3536 AVFORMAT_COMPONENTS_LIST="
3537     $DEMUXER_LIST
3538     $MUXER_LIST
3539     $PROTOCOL_LIST
3540 "
3541
3542 ALL_COMPONENTS="
3543     $AVCODEC_COMPONENTS_LIST
3544     $AVDEVICE_COMPONENTS_LIST
3545     $AVFILTER_COMPONENTS_LIST
3546     $AVFORMAT_COMPONENTS_LIST
3547 "
3548
3549 for n in $COMPONENT_LIST; do
3550     v=$(toupper ${n%s})_LIST
3551     eval enable \$$v
3552     eval ${n}_if_any="\$$v"
3553 done
3554
3555 enable $ARCH_EXT_LIST
3556
3557 die_unknown(){
3558     echo "Unknown option \"$1\"."
3559     echo "See $0 --help for available options."
3560     exit 1
3561 }
3562
3563 print_in_columns() {
3564     cols=$(expr $ncols / 24)
3565     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3566 }
3567
3568 show_list() {
3569     suffix=_$1
3570     shift
3571     echo $* | sed s/$suffix//g | print_in_columns
3572     exit 0
3573 }
3574
3575 rand_list(){
3576     IFS=', '
3577     set -- $*
3578     unset IFS
3579     for thing; do
3580         comp=${thing%:*}
3581         prob=${thing#$comp}
3582         prob=${prob#:}
3583         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3584         echo "prob ${prob:-0.5}"
3585         printf '%s\n' $comp
3586     done
3587 }
3588
3589 do_random(){
3590     action=$1
3591     shift
3592     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3593     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3594 }
3595
3596 for opt do
3597     optval="${opt#*=}"
3598     case "$opt" in
3599         --extra-ldflags=*)
3600             add_ldflags $optval
3601         ;;
3602         --extra-ldexeflags=*)
3603             add_ldexeflags $optval
3604         ;;
3605         --extra-ldsoflags=*)
3606             add_ldsoflags $optval
3607         ;;
3608         --extra-ldlibflags=*)
3609             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3610                  "removed in the future. Use --extra-ldsoflags instead."
3611             add_ldsoflags $optval
3612         ;;
3613         --extra-libs=*)
3614             add_extralibs $optval
3615         ;;
3616         --disable-devices)
3617             disable $INDEV_LIST $OUTDEV_LIST
3618         ;;
3619         --enable-debug=*)
3620             debuglevel="$optval"
3621         ;;
3622         --disable-programs)
3623             disable $PROGRAM_LIST
3624         ;;
3625         --disable-everything)
3626             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3627         ;;
3628         --disable-all)
3629             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3630             disable $LIBRARY_LIST $PROGRAM_LIST doc
3631             enable avutil
3632         ;;
3633         --enable-random|--disable-random)
3634             action=${opt%%-random}
3635             do_random ${action#--} $COMPONENT_LIST
3636         ;;
3637         --enable-random=*|--disable-random=*)
3638             action=${opt%%-random=*}
3639             do_random ${action#--} $optval
3640         ;;
3641         --enable-sdl)
3642             enable sdl2
3643         ;;
3644         --enable-*=*|--disable-*=*)
3645             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3646             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3647             eval list=\$$(toupper $thing)_LIST
3648             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3649             list=$(filter "$name" $list)
3650             [ "$list" = "" ] && warn "Option $opt did not match anything"
3651             $action $list
3652         ;;
3653         --enable-yasm|--disable-yasm)
3654             warn "The ${opt} option is only provided for compatibility and will be\n"\
3655                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3656             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3657         ;;
3658         --yasmexe=*)
3659             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3660                  "removed in the future. Use --x86asmexe instead."
3661             x86asmexe="$optval"
3662         ;;
3663         --enable-?*|--disable-?*)
3664             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3665             if is_in $option $COMPONENT_LIST; then
3666                 test $action = disable && action=unset
3667                 eval $action \$$(toupper ${option%s})_LIST
3668             elif is_in $option $CMDLINE_SELECT; then
3669                 $action $option
3670             else
3671                 die_unknown $opt
3672             fi
3673         ;;
3674         --list-*)
3675             NAME="${opt#--list-}"
3676             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3677             NAME=${NAME%s}
3678             eval show_list $NAME \$$(toupper $NAME)_LIST
3679         ;;
3680         --help|-h) show_help
3681         ;;
3682         --quiet|-q) quiet=yes
3683         ;;
3684         --fatal-warnings) enable fatal_warnings
3685         ;;
3686         --libfuzzer=*)
3687             libfuzzer_path="$optval"
3688         ;;
3689         *)
3690             optname="${opt%%=*}"
3691             optname="${optname#--}"
3692             optname=$(echo "$optname" | sed 's/-/_/g')
3693             if is_in $optname $CMDLINE_SET; then
3694                 eval $optname='$optval'
3695             elif is_in $optname $CMDLINE_APPEND; then
3696                 append $optname "$optval"
3697             else
3698                 die_unknown $opt
3699             fi
3700         ;;
3701     esac
3702 done
3703
3704 for e in $env; do
3705     eval "export $e"
3706 done
3707
3708 if disabled autodetect; then
3709
3710     # Unless iconv is explicitely disabled by the user, we still want to probe
3711     # for the iconv from the libc.
3712     disabled iconv || enable libc_iconv
3713
3714     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3715     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3716 fi
3717 # Mark specifically enabled, but normally autodetected libraries as requested.
3718 for lib in $AUTODETECT_LIBS; do
3719     enabled $lib && request $lib
3720 done
3721 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3722 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3723 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3724
3725 disabled logging && logfile=/dev/null
3726
3727 # we need to build at least one lib type
3728 if ! enabled_any static shared; then
3729     cat <<EOF
3730 At least one library type must be built.
3731 Specify --enable-static to build the static libraries or --enable-shared to
3732 build the shared libraries as well. To only build the shared libraries specify
3733 --disable-static in addition to --enable-shared.
3734 EOF
3735     exit 1
3736 fi
3737
3738 die_license_disabled() {
3739     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3740 }
3741
3742 die_license_disabled_gpl() {
3743     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3744 }
3745
3746 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3747 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3748
3749 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3750 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3751
3752 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3753
3754 enabled_all gnutls openssl &&
3755     die "GnuTLS and OpenSSL must not be enabled at the same time."
3756
3757 # Disable all the library-specific components if the library itself
3758 # is disabled, see AVCODEC_LIST and following _LIST variables.
3759
3760 disable_components(){
3761     disabled ${1} && disable $(
3762         eval components="\$$(toupper ${1})_COMPONENTS"
3763         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3764     )
3765 }
3766
3767 map 'disable_components $v' $LIBRARY_LIST
3768
3769 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3770 set >> $logfile
3771
3772 test -n "$valgrind" && toolchain="valgrind-memcheck"
3773
3774 enabled ossfuzz && {
3775     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3776     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3777 }
3778
3779 case "$toolchain" in
3780     *-asan)
3781         cc_default="${toolchain%-asan}"
3782         add_cflags  -fsanitize=address
3783         add_ldflags -fsanitize=address
3784     ;;
3785     *-msan)
3786         cc_default="${toolchain%-msan}"
3787         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3788         add_ldflags -fsanitize=memory
3789     ;;
3790     *-tsan)
3791         cc_default="${toolchain%-tsan}"
3792         add_cflags  -fsanitize=thread -fPIE
3793         add_ldflags -fsanitize=thread -pie
3794         case "$toolchain" in
3795             gcc-tsan)
3796                 add_cflags  -fPIC
3797                 add_ldflags -fPIC
3798                 ;;
3799         esac
3800     ;;
3801     *-usan)
3802         cc_default="${toolchain%-usan}"
3803         add_cflags  -fsanitize=undefined
3804         add_ldflags -fsanitize=undefined
3805     ;;
3806     valgrind-*)
3807         target_exec_default="valgrind"
3808         case "$toolchain" in
3809             valgrind-massif)
3810                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3811                 ;;
3812             valgrind-memcheck)
3813                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3814                 ;;
3815         esac
3816     ;;
3817     msvc)
3818         # Check whether the current MSVC version needs the C99 converter.
3819         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3820         # support enough of C99 to build ffmpeg. Default to the new
3821         # behaviour if the regexp was unable to match anything, since this
3822         # successfully parses the version number of existing supported
3823         # versions that require the converter (MSVC 2010 and 2012).
3824         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3825         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3826             cc_default="cl"
3827             cxx_default="cl"
3828         else
3829             cc_default="c99wrap cl"
3830             cxx_default="c99wrap cl"
3831         fi
3832         ld_default="$source_path/compat/windows/mslink"
3833         nm_default="dumpbin -symbols"
3834         ar_default="lib"
3835         case "$arch" in
3836         aarch64|arm64)
3837             as_default="armasm64"
3838             ;;
3839         arm*)
3840             as_default="armasm"
3841             ;;
3842         esac
3843         target_os_default="win32"
3844         # Use a relative path for TMPDIR. This makes sure all the
3845         # ffconf temp files are written with a relative path, avoiding
3846         # issues with msys/win32 path conversion for MSVC parameters
3847         # such as -Fo<file> or -out:<file>.
3848         TMPDIR=.
3849     ;;
3850     icl)
3851         cc_default="icl"
3852         ld_default="xilink"
3853         nm_default="dumpbin -symbols"
3854         ar_default="xilib"
3855         target_os_default="win32"
3856         TMPDIR=.
3857     ;;
3858     gcov)
3859         add_cflags  -fprofile-arcs -ftest-coverage
3860         add_ldflags -fprofile-arcs -ftest-coverage
3861     ;;
3862     llvm-cov)
3863         add_cflags -fprofile-arcs -ftest-coverage
3864         add_ldflags --coverage
3865     ;;
3866     hardened)
3867         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3868         add_cflags   -fno-strict-overflow -fstack-protector-all
3869         add_ldflags  -Wl,-z,relro -Wl,-z,now
3870         add_cflags   -fPIE
3871         add_ldexeflags -fPIE -pie
3872     ;;
3873     ?*)
3874         die "Unknown toolchain $toolchain"
3875     ;;
3876 esac
3877
3878 test -n "$cross_prefix" && enable cross_compile
3879
3880 if enabled cross_compile; then
3881     test -n "$arch" && test -n "$target_os" ||
3882         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3883 fi
3884
3885 ar_default="${cross_prefix}${ar_default}"
3886 cc_default="${cross_prefix}${cc_default}"
3887 cxx_default="${cross_prefix}${cxx_default}"
3888 nm_default="${cross_prefix}${nm_default}"
3889 pkg_config_default="${cross_prefix}${pkg_config_default}"
3890 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3891     ranlib_default="${cross_prefix}${ranlib_default} -D"
3892 else
3893     ranlib_default="${cross_prefix}${ranlib_default}"
3894 fi
3895 strip_default="${cross_prefix}${strip_default}"
3896 windres_default="${cross_prefix}${windres_default}"
3897
3898 sysinclude_default="${sysroot}/usr/include"
3899
3900 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3901     target_exec target_os x86asmexe nvcc
3902 enabled cross_compile || host_cc_default=$cc
3903 set_default host_cc
3904
3905 pkg_config_fail_message=""
3906 if ! $pkg_config --version >/dev/null 2>&1; then
3907     warn "$pkg_config not found, library detection may fail."
3908     pkg_config=false
3909 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3910     pkg_config_fail_message="
3911 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3912 fi
3913
3914 if test $doxygen != $doxygen_default && \
3915   ! $doxygen --version >/dev/null 2>&1; then
3916     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3917 fi
3918
3919 exesuf() {
3920     case $1 in
3921         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3922     esac
3923 }
3924
3925 EXESUF=$(exesuf $target_os)
3926 HOSTEXESUF=$(exesuf $host_os)
3927
3928 # set temporary file name
3929 : ${TMPDIR:=$TEMPDIR}
3930 : ${TMPDIR:=$TMP}
3931 : ${TMPDIR:=/tmp}
3932
3933 if [ -n "$tempprefix" ] ; then
3934     mktemp(){
3935         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3936         echo "$tmpname"
3937         mkdir "$tmpname"
3938     }
3939 elif ! check_cmd mktemp -u XXXXXX; then
3940     # simple replacement for missing mktemp
3941     # NOT SAFE FOR GENERAL USE
3942     mktemp(){
3943         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3944         echo "$tmpname"
3945         mkdir "$tmpname"
3946     }
3947 fi
3948
3949 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3950     die "Unable to create temporary directory in $TMPDIR."
3951
3952 tmpfile(){
3953     tmp="${FFTMPDIR}/test"$2
3954     (set -C; exec > $tmp) 2> /dev/null ||
3955         die "Unable to create temporary file in $FFTMPDIR."
3956     eval $1=$tmp
3957 }
3958
3959 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3960 trap 'exit 2' INT
3961
3962 tmpfile TMPASM .asm
3963 tmpfile TMPC   .c
3964 tmpfile TMPCPP .cpp
3965 tmpfile TMPE   $EXESUF
3966 tmpfile TMPH   .h
3967 tmpfile TMPM   .m
3968 tmpfile TMPO   .o
3969 tmpfile TMPS   .S
3970 tmpfile TMPSH  .sh
3971 tmpfile TMPV   .ver
3972
3973 unset -f mktemp
3974
3975 chmod +x $TMPE
3976
3977 # make sure we can execute files in $TMPDIR
3978 cat > $TMPSH 2>> $logfile <<EOF
3979 #! /bin/sh
3980 EOF
3981 chmod +x $TMPSH >> $logfile 2>&1
3982 if ! $TMPSH >> $logfile 2>&1; then
3983     cat <<EOF
3984 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3985 variable to another directory and make sure that it is not mounted noexec.
3986 EOF
3987     die "Sanity test failed."
3988 fi
3989
3990 armasm_flags(){
3991     for flag; do
3992         case $flag in
3993             # Filter out MSVC cl.exe options from cflags that shouldn't
3994             # be passed to gas-preprocessor
3995             -M[TD]*)                                            ;;
3996             *)                  echo $flag                      ;;
3997         esac
3998    done
3999 }
4000
4001 cparser_flags(){
4002     for flag; do
4003         case $flag in
4004             -Wno-switch)             echo -Wno-switch-enum ;;
4005             -Wno-format-zero-length) ;;
4006             -Wdisabled-optimization) ;;
4007             -Wno-pointer-sign)       echo -Wno-other ;;
4008             *)                       echo $flag ;;
4009         esac
4010     done
4011 }
4012
4013 msvc_common_flags(){
4014     for flag; do
4015         case $flag in
4016             # In addition to specifying certain flags under the compiler
4017             # specific filters, they must be specified here as well or else the
4018             # generic catch all at the bottom will print the original flag.
4019             -Wall)                ;;
4020             -Wextra)              ;;
4021             -std=c99)             ;;
4022             # Common flags
4023             -fomit-frame-pointer) ;;
4024             -g)                   echo -Z7 ;;
4025             -fno-math-errno)      ;;
4026             -fno-common)          ;;
4027             -fno-signed-zeros)    ;;
4028             -fPIC)                ;;
4029             -mthumb)              ;;
4030             -march=*)             ;;
4031             -lz)                  echo zlib.lib ;;
4032             -lx264)               echo libx264.lib ;;
4033             -lstdc++)             ;;
4034             -l*)                  echo ${flag#-l}.lib ;;
4035             -LARGEADDRESSAWARE)   echo $flag ;;
4036             -L*)                  echo -libpath:${flag#-L} ;;
4037             *)                    echo $flag ;;
4038         esac
4039     done
4040 }
4041
4042 msvc_flags(){
4043     msvc_common_flags "$@"
4044     for flag; do
4045         case $flag in
4046             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4047                                        -wd4554 ;;
4048             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4049                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4050                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4051                                        -wd4307 \
4052                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4053         esac
4054     done
4055 }
4056
4057 icl_flags(){
4058     msvc_common_flags "$@"
4059     for flag; do
4060         case $flag in
4061             # Despite what Intel's documentation says -Wall, which is supported
4062             # on Windows, does enable remarks so disable them here.
4063             -Wall)                echo $flag -Qdiag-disable:remark ;;
4064             -std=c99)             echo -Qstd=c99 ;;
4065             -flto)                echo -ipo ;;
4066         esac
4067     done
4068 }
4069
4070 icc_flags(){
4071     for flag; do
4072         case $flag in
4073             -flto)                echo -ipo ;;
4074             *)                    echo $flag ;;
4075         esac
4076     done
4077 }
4078
4079 pgi_flags(){
4080     for flag; do
4081         case $flag in
4082             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4083             -fomit-frame-pointer) echo -Mnoframe ;;
4084             -g)                   echo -gopt ;;
4085             *)                    echo $flag ;;
4086         esac
4087     done
4088 }
4089
4090 suncc_flags(){
4091     for flag; do
4092         case $flag in
4093             -march=*|-mcpu=*)
4094                 case "${flag#*=}" in
4095                     native)                   echo -xtarget=native       ;;
4096                     v9|niagara)               echo -xarch=sparc          ;;
4097                     ultrasparc)               echo -xarch=sparcvis       ;;
4098                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4099                     i586|pentium)             echo -xchip=pentium        ;;
4100                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4101                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4102                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4103                     pentium4*)          echo -xtarget=pentium4           ;;
4104                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4105                     *-sse3)             echo -xarch=sse3                 ;;
4106                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4107                     bonnell)                   echo -xarch=ssse3         ;;
4108                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4109                     westmere)                  echo -xtarget=westmere    ;;
4110                     silvermont)                echo -xarch=sse4_2        ;;
4111                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4112                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4113                                                echo -xarch=avx           ;;
4114                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4115                     btver1)                    echo -xarch=amdsse4a      ;;
4116                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4117                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4118                     k8|opteron|athlon64|athlon-fx)
4119                                                echo -xarch=sse2a         ;;
4120                     athlon*)                   echo -xarch=pentium_proa  ;;
4121                 esac
4122                 ;;
4123             -std=c99)             echo -xc99              ;;
4124             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4125             -fPIC)                echo -KPIC -xcode=pic32 ;;
4126             -W*,*)                echo $flag              ;;
4127             -f*-*|-W*|-mimpure-text)                      ;;
4128             -shared)              echo -G                 ;;
4129             *)                    echo $flag              ;;
4130         esac
4131     done
4132 }
4133
4134 tms470_flags(){
4135     for flag; do
4136         case $flag in
4137             -march=*|-mcpu=*)
4138                 case "${flag#*=}" in
4139                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4140                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4141                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4142                     armv6*|arm11*)          echo -mv=6   ;;
4143                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4144                                             echo -mv=5e  ;;
4145                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4146                 esac
4147                 ;;
4148             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4149             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4150             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4151             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4152             -msoft-float)   echo --float_support=vfplib       ;;
4153             -O[0-3]|-mf=*)  echo $flag                        ;;
4154             -g)             echo -g -mn                       ;;
4155             -pds=*)         echo $flag                        ;;
4156             -D*|-I*)        echo $flag                        ;;
4157             --gcc|--abi=*)  echo $flag                        ;;
4158             -me)            echo $flag                        ;;
4159         esac
4160     done
4161 }
4162
4163 probe_cc(){
4164     pfx=$1
4165     _cc=$2
4166     first=$3
4167
4168     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4169     unset _ld_o _ldflags _ld_lib _ld_path
4170     unset _depflags _DEPCMD _DEPFLAGS
4171     _flags_filter=echo
4172
4173     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4174         true # no-op to avoid reading stdin in following checks
4175     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4176         _type=llvm_gcc
4177         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4178         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4179         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4180         _cflags_speed='-O3'
4181         _cflags_size='-Os'
4182     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4183         _type=gcc
4184         gcc_version=$($_cc --version | head -n1)
4185         gcc_basever=$($_cc -dumpversion)
4186         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4187         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4188         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4189         case $gcc_basever in
4190             2) ;;
4191             2.*) ;;
4192             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4193         esac
4194         if [ "$first" = true ]; then
4195             case $gcc_basever in
4196                 4.2*)
4197                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4198             esac
4199         fi
4200         _cflags_speed='-O3'
4201         _cflags_size='-Os'
4202     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4203         _type=icc
4204         _ident=$($_cc --version | head -n1)
4205         _depflags='-MMD'
4206         _cflags_speed='-O3'
4207         _cflags_size='-Os'
4208         _cflags_noopt='-O1'
4209         _flags_filter=icc_flags
4210     elif $_cc -v 2>&1 | grep -q xlc; then
4211         _type=xlc
4212         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4213         _cflags_speed='-O5'
4214         _cflags_size='-O5 -qcompact'
4215     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4216         test -d "$sysroot" || die "No valid sysroot specified."
4217         _type=armcc
4218         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4219         armcc_conf="$PWD/armcc.conf"
4220         $_cc --arm_linux_configure                 \
4221              --arm_linux_config_file="$armcc_conf" \
4222              --configure_sysroot="$sysroot"        \
4223              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4224              die "Error creating armcc configuration file."
4225         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4226         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4227         as_default="${cross_prefix}gcc"
4228         _depflags='-MMD'
4229         _cflags_speed='-O3'
4230         _cflags_size='-Os'
4231     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4232         _type=tms470
4233         _ident=$($_cc -version | head -n1 | tr -s ' ')
4234         _flags='--gcc --abi=eabi -me'
4235         _cc_e='-ppl -fe=$@'
4236         _cc_o='-fe=$@'
4237         _depflags='-ppa -ppd=$(@:.o=.d)'
4238         _cflags_speed='-O3 -mf=5'
4239         _cflags_size='-O3 -mf=2'
4240         _flags_filter=tms470_flags
4241     elif $_cc -v 2>&1 | grep -q clang; then
4242         _type=clang
4243         _ident=$($_cc --version 2>/dev/null | head -n1)
4244         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4245         _cflags_speed='-O3'
4246         _cflags_size='-Oz'
4247     elif $_cc -V 2>&1 | grep -q Sun; then
4248         _type=suncc
4249         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4250         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4251         _DEPFLAGS='-xM1 -xc99'
4252         _ldflags='-std=c99'
4253         _cflags_speed='-O5'
4254         _cflags_size='-O5 -xspace'
4255         _flags_filter=suncc_flags
4256     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4257         _type=pathscale
4258         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4259         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4260         _cflags_speed='-O2'
4261         _cflags_size='-Os'
4262         _flags_filter='filter_out -Wdisabled-optimization'
4263     elif $_cc -v 2>&1 | grep -q Open64; then
4264         _type=open64
4265         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4266         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4267         _cflags_speed='-O2'
4268         _cflags_size='-Os'
4269         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4270     elif $_cc -V 2>&1 | grep -q Portland; then
4271         _type=pgi
4272         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4273         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4274         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4275         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4276         _cflags_noopt="-O"
4277         _flags_filter=pgi_flags
4278     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4279         _type=armasm
4280         _ident=$($_cc | head -n1)
4281         # 4509: "This form of conditional instruction is deprecated"
4282         _flags="-nologo -ignore 4509"
4283         _flags_filter=armasm_flags
4284     elif $_cc 2>&1 | grep -q Intel; then
4285         _type=icl
4286         _ident=$($_cc 2>&1 | head -n1)
4287         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4288         # Not only is O3 broken on 13.x+ but it is slower on all previous
4289         # versions (tested) as well.
4290         _cflags_speed="-O2"
4291         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4292         if $_cc 2>&1 | grep -q Linker; then
4293             _ld_o='-out:$@'
4294         else
4295             _ld_o='-Fe$@'
4296         fi
4297         _cc_o='-Fo$@'
4298         _cc_e='-P'
4299         _flags_filter=icl_flags
4300         _ld_lib='lib%.a'
4301         _ld_path='-libpath:'
4302         # -Qdiag-error to make icl error when seeing certain unknown arguments
4303         _flags='-nologo -Qdiag-error:4044,10157'
4304         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4305         # with MSVC which enables it by default.
4306         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4307         disable stripping
4308     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4309         # lld can emulate multiple different linkers; in ms link.exe mode,
4310         # the -? parameter gives the help output which contains an identifyable
4311         # string, while it gives an error in other modes.
4312         _type=lld-link
4313         # The link.exe mode doesn't have a switch for getting the version,
4314         # but we can force it back to gnu mode and get the version from there.
4315         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4316         _ld_o='-out:$@'
4317         _flags_filter=msvc_flags
4318         _ld_lib='lib%.a'
4319         _ld_path='-libpath:'
4320     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4321         _type=msvc
4322         _ident=$($_cc 2>&1 | head -n1)
4323         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4324         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4325         _cflags_speed="-O2"
4326         _cflags_size="-O1"
4327         _cflags_noopt="-O1"
4328         if $_cc -nologo- 2>&1 | grep -q Linker; then
4329             _ld_o='-out:$@'
4330         else
4331             _ld_o='-Fe$@'
4332         fi
4333         _cc_o='-Fo$@'
4334         _cc_e='-P -Fi$@'
4335         _flags_filter=msvc_flags
4336         _ld_lib='lib%.a'
4337         _ld_path='-libpath:'
4338         _flags='-nologo'
4339         disable stripping
4340     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4341         _type=cparser
4342         _ident=$($_cc --version | head -n1)
4343         _depflags='-MMD'
4344         _cflags_speed='-O4'
4345         _cflags_size='-O2'
4346         _flags_filter=cparser_flags
4347     fi
4348
4349     eval ${pfx}_type=\$_type
4350     eval ${pfx}_ident=\$_ident
4351 }
4352
4353 set_ccvars(){
4354     eval ${1}_C=\${_cc_c-\${${1}_C}}
4355     eval ${1}_E=\${_cc_e-\${${1}_E}}
4356     eval ${1}_O=\${_cc_o-\${${1}_O}}
4357
4358     if [ -n "$_depflags" ]; then
4359         eval ${1}_DEPFLAGS=\$_depflags
4360     else
4361         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4362         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4363         eval DEP${1}FLAGS=\$_flags
4364     fi
4365 }
4366
4367 probe_cc cc "$cc" "true"
4368 cflags_filter=$_flags_filter
4369 cflags_speed=$_cflags_speed
4370 cflags_size=$_cflags_size
4371 cflags_noopt=$_cflags_noopt
4372 add_cflags $_flags $_cflags
4373 cc_ldflags=$_ldflags
4374 set_ccvars CC
4375 set_ccvars CXX
4376
4377 probe_cc hostcc "$host_cc"
4378 host_cflags_filter=$_flags_filter
4379 host_cflags_speed=$_cflags_speed
4380 add_host_cflags  $_flags $_cflags
4381 set_ccvars HOSTCC
4382
4383 test -n "$cc_type" && enable $cc_type ||
4384     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4385
4386 : ${as_default:=$cc}
4387 : ${objcc_default:=$cc}
4388 : ${dep_cc_default:=$cc}
4389 : ${ld_default:=$cc}
4390 : ${host_ld_default:=$host_cc}
4391 set_default ar as objcc dep_cc ld ln_s host_ld windres
4392
4393 probe_cc as "$as"
4394 asflags_filter=$_flags_filter
4395 add_asflags $_flags $_cflags
4396 set_ccvars AS
4397
4398 probe_cc objcc "$objcc"
4399 objcflags_filter=$_flags_filter
4400 add_objcflags $_flags $_cflags
4401 set_ccvars OBJC
4402
4403 probe_cc ld "$ld"
4404 ldflags_filter=$_flags_filter
4405 add_ldflags $_flags $_ldflags
4406 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4407 LD_O=${_ld_o-$LD_O}
4408 LD_LIB=${_ld_lib-$LD_LIB}
4409 LD_PATH=${_ld_path-$LD_PATH}
4410
4411 probe_cc hostld "$host_ld"
4412 host_ldflags_filter=$_flags_filter
4413 add_host_ldflags $_flags $_ldflags
4414 HOSTLD_O=${_ld_o-$HOSTLD_O}
4415
4416 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4417     probe_cc depcc "$dep_cc"
4418     CCDEP=${_DEPCMD:-$DEPCMD}
4419     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4420     DEPCCFLAGS=$_flags
4421 fi
4422
4423 if $ar 2>&1 | grep -q Microsoft; then
4424     arflags="-nologo"
4425     ar_o='-out:$@'
4426 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4427     arflags="rq"
4428     ar_o='$@'
4429 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4430     arflags='-Xany -r -c'
4431     ar_o='$@'
4432 elif $ar 2>&1 | grep -q "\[D\] "; then
4433     arflags="rcD"
4434     ar_o='$@'
4435 else
4436     arflags="rc"
4437     ar_o='$@'
4438 fi
4439
4440 add_cflags $extra_cflags
4441 add_cxxflags $extra_cxxflags
4442 add_objcflags $extra_objcflags
4443 add_asflags $extra_cflags
4444
4445 if test -n "$sysroot"; then
4446     case "$cc_type" in
4447         gcc|llvm_gcc|clang)
4448             add_cppflags --sysroot="$sysroot"
4449             add_ldflags --sysroot="$sysroot"
4450         ;;
4451         tms470)
4452             add_cppflags -I"$sysinclude"
4453             add_ldflags  --sysroot="$sysroot"
4454         ;;
4455     esac
4456 fi
4457
4458 if test "$cpu" = host; then
4459     enabled cross_compile &&
4460         die "--cpu=host makes no sense when cross-compiling."
4461
4462     case "$cc_type" in
4463         gcc|llvm_gcc)
4464             check_native(){
4465                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4466                 sed -n "/cc1.*$1=/{
4467                             s/.*$1=\\([^ ]*\\).*/\\1/
4468                             p
4469                             q
4470                         }" $TMPE
4471             }
4472             cpu=$(check_native -march || check_native -mcpu)
4473         ;;
4474         clang)
4475             check_native(){
4476                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4477                 sed -n "/cc1.*-target-cpu /{
4478                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4479                             p
4480                             q
4481                         }" $TMPE
4482             }
4483             cpu=$(check_native -march)
4484         ;;
4485     esac
4486
4487     test "${cpu:-host}" = host &&
4488         die "--cpu=host not supported with compiler $cc"
4489 fi
4490
4491 # Deal with common $arch aliases
4492 case "$arch" in
4493     aarch64|arm64)
4494         arch="aarch64"
4495     ;;
4496     arm*|iPad*|iPhone*)
4497         arch="arm"
4498     ;;
4499     mips*|IP*)
4500         case "$arch" in
4501         *el)
4502             add_cppflags -EL
4503             add_ldflags -EL
4504         ;;
4505         *eb)
4506             add_cppflags -EB
4507             add_ldflags -EB
4508         ;;
4509         esac
4510         arch="mips"
4511     ;;
4512     parisc*|hppa*)
4513         arch="parisc"
4514     ;;
4515     "Power Macintosh"|ppc*|powerpc*)
4516         arch="ppc"
4517     ;;
4518     s390|s390x)
4519         arch="s390"
4520     ;;
4521     sh4|sh)
4522         arch="sh4"
4523     ;;
4524     sun4*|sparc*)
4525         arch="sparc"
4526     ;;
4527     tilegx|tile-gx)
4528         arch="tilegx"
4529     ;;
4530     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4531         arch="x86"
4532     ;;
4533 esac
4534
4535 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4536 enable $arch
4537
4538 # Add processor-specific flags
4539 if enabled aarch64; then
4540
4541     case $cpu in
4542         armv*)
4543             cpuflags="-march=$cpu"
4544         ;;
4545         *)
4546             cpuflags="-mcpu=$cpu"
4547         ;;
4548     esac
4549
4550 elif enabled alpha; then
4551
4552     cpuflags="-mcpu=$cpu"
4553
4554 elif enabled arm; then
4555
4556     check_arm_arch() {
4557         check_cpp_condition stddef.h \
4558             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4559             $cpuflags
4560     }
4561
4562     probe_arm_arch() {
4563         if   check_arm_arch 4;        then echo armv4
4564         elif check_arm_arch 4T;       then echo armv4t
4565         elif check_arm_arch 5;        then echo armv5
4566         elif check_arm_arch 5E;       then echo armv5e
4567         elif check_arm_arch 5T;       then echo armv5t
4568         elif check_arm_arch 5TE;      then echo armv5te
4569         elif check_arm_arch 5TEJ;     then echo armv5te
4570         elif check_arm_arch 6;        then echo armv6
4571         elif check_arm_arch 6J;       then echo armv6j
4572         elif check_arm_arch 6K;       then echo armv6k
4573         elif check_arm_arch 6Z;       then echo armv6z
4574         elif check_arm_arch 6ZK;      then echo armv6zk
4575         elif check_arm_arch 6T2;      then echo armv6t2
4576         elif check_arm_arch 7;        then echo armv7
4577         elif check_arm_arch 7A  7_A;  then echo armv7-a
4578         elif check_arm_arch 7S;       then echo armv7-a
4579         elif check_arm_arch 7R  7_R;  then echo armv7-r
4580         elif check_arm_arch 7M  7_M;  then echo armv7-m
4581         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4582         elif check_arm_arch 8A  8_A;  then echo armv8-a
4583         fi
4584     }
4585
4586     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4587
4588     case $cpu in
4589         armv*)
4590             cpuflags="-march=$cpu"
4591             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4592         ;;
4593         *)
4594             cpuflags="-mcpu=$cpu"
4595             case $cpu in
4596                 cortex-a*)                               subarch=armv7a  ;;
4597                 cortex-r*)                               subarch=armv7r  ;;
4598                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4599                 arm11*)                                  subarch=armv6   ;;
4600                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4601                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4602                 *)                             subarch=$(probe_arm_arch) ;;
4603             esac
4604         ;;
4605     esac
4606
4607     case "$subarch" in
4608         armv5t*)    enable fast_clz                ;;
4609         armv[6-8]*)
4610             enable fast_clz
4611             disabled fast_unaligned || enable fast_unaligned
4612             ;;
4613     esac
4614
4615 elif enabled avr32; then
4616
4617     case $cpu in
4618         ap7[02]0[0-2])
4619             subarch="avr32_ap"
4620             cpuflags="-mpart=$cpu"
4621         ;;
4622         ap)
4623             subarch="avr32_ap"
4624             cpuflags="-march=$cpu"
4625         ;;
4626         uc3[ab]*)
4627             subarch="avr32_uc"
4628             cpuflags="-mcpu=$cpu"
4629         ;;
4630         uc)
4631             subarch="avr32_uc"
4632             cpuflags="-march=$cpu"
4633         ;;
4634     esac
4635
4636 elif enabled bfin; then
4637
4638     cpuflags="-mcpu=$cpu"
4639
4640 elif enabled mips; then
4641
4642     cpuflags="-march=$cpu"
4643
4644     if [ "$cpu" != "generic" ]; then
4645         disable mips32r2
4646         disable mips32r5
4647         disable mips64r2
4648         disable mips32r6
4649         disable mips64r6
4650         disable loongson2
4651         disable loongson3
4652
4653         case $cpu in
4654             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4655                 enable mips32r2
4656                 disable msa
4657             ;;
4658             p5600|i6400|p6600)
4659                 disable mipsdsp
4660                 disable mipsdspr2
4661             ;;
4662             loongson*)
4663                 enable loongson2
4664                 enable loongson3
4665                 enable local_aligned
4666                 enable simd_align_16
4667                 enable fast_64bit
4668                 enable fast_clz
4669                 enable fast_cmov
4670                 enable fast_unaligned
4671                 disable aligned_stack
4672                 disable mipsfpu
4673                 disable mipsdsp
4674                 disable mipsdspr2
4675                 case $cpu in
4676                     loongson3*)
4677                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4678                     ;;
4679                     loongson2e)
4680                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4681                     ;;
4682                     loongson2f)
4683                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4684                     ;;
4685                 esac
4686             ;;
4687             *)
4688                 # Unknown CPU. Disable everything.
4689                 warn "unknown CPU. Disabling all MIPS optimizations."
4690                 disable mipsfpu
4691                 disable mipsdsp
4692                 disable mipsdspr2
4693                 disable msa
4694                 disable mmi
4695             ;;
4696         esac
4697
4698         case $cpu in
4699             24kc)
4700                 disable mipsfpu
4701                 disable mipsdsp
4702                 disable mipsdspr2
4703             ;;
4704             24kf*)
4705                 disable mipsdsp
4706                 disable mipsdspr2
4707             ;;
4708             24kec|34kc|1004kc)
4709                 disable mipsfpu
4710                 disable mipsdspr2
4711             ;;
4712             24kef*|34kf*|1004kf*)
4713                 disable mipsdspr2
4714             ;;
4715             74kc)
4716                 disable mipsfpu
4717             ;;
4718             p5600)
4719                 enable mips32r5
4720                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4721             ;;
4722             i6400)
4723                 enable mips64r6
4724                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4725             ;;
4726             p6600)
4727                 enable mips64r6
4728                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4729             ;;
4730         esac
4731     else
4732         # We do not disable anything. Is up to the user to disable the unwanted features.
4733         warn 'generic cpu selected'
4734     fi
4735
4736 elif enabled ppc; then
4737
4738     disable ldbrx
4739
4740     case $(tolower $cpu) in
4741         601|ppc601|powerpc601)
4742             cpuflags="-mcpu=601"
4743             disable altivec
4744         ;;
4745         603*|ppc603*|powerpc603*)
4746             cpuflags="-mcpu=603"
4747             disable altivec
4748         ;;
4749         604*|ppc604*|powerpc604*)
4750             cpuflags="-mcpu=604"
4751             disable altivec
4752         ;;
4753         g3|75*|ppc75*|powerpc75*)
4754             cpuflags="-mcpu=750"
4755             disable altivec
4756         ;;
4757         g4|745*|ppc745*|powerpc745*)
4758             cpuflags="-mcpu=7450"
4759             disable vsx
4760         ;;
4761         74*|ppc74*|powerpc74*)
4762             cpuflags="-mcpu=7400"
4763             disable vsx
4764         ;;
4765         g5|970|ppc970|powerpc970)
4766             cpuflags="-mcpu=970"
4767             disable vsx
4768         ;;
4769         power[3-6]*)
4770             cpuflags="-mcpu=$cpu"
4771             disable vsx
4772         ;;
4773         power[7-8]*)
4774             cpuflags="-mcpu=$cpu"
4775         ;;
4776         cell)
4777             cpuflags="-mcpu=cell"
4778             enable ldbrx
4779             disable vsx
4780         ;;
4781         e500mc)
4782             cpuflags="-mcpu=e500mc"
4783             disable altivec
4784         ;;
4785         e500v2)
4786             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4787             disable altivec
4788             disable dcbzl
4789         ;;
4790         e500)
4791             cpuflags="-mcpu=8540 -mhard-float"
4792             disable altivec
4793             disable dcbzl
4794         ;;
4795     esac
4796
4797 elif enabled sparc; then
4798
4799     case $cpu in
4800         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4801             cpuflags="-mcpu=$cpu"
4802         ;;
4803         ultrasparc*|niagara[234])
4804             cpuflags="-mcpu=$cpu"
4805         ;;
4806     esac
4807
4808 elif enabled x86; then
4809
4810     case $cpu in
4811         i[345]86|pentium)
4812             cpuflags="-march=$cpu"
4813             disable i686
4814             disable mmx
4815         ;;
4816         # targets that do NOT support nopl and conditional mov (cmov)
4817         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4818             cpuflags="-march=$cpu"
4819             disable i686
4820         ;;
4821         # targets that do support nopl and conditional mov (cmov)
4822         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4823         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4824         |amdfam10|barcelona|b[dt]ver*|znver*)
4825             cpuflags="-march=$cpu"
4826             enable i686
4827             enable fast_cmov
4828         ;;
4829         # targets that do support conditional mov but on which it's slow
4830         pentium4|pentium4m|prescott|nocona)
4831             cpuflags="-march=$cpu"
4832             enable i686
4833             disable fast_cmov
4834         ;;
4835     esac
4836
4837 fi
4838
4839 if [ "$cpu" != generic ]; then
4840     add_cflags  $cpuflags
4841     add_asflags $cpuflags
4842     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4843 fi
4844
4845 # compiler sanity check
4846 check_exec <<EOF
4847 int main(void){ return 0; }
4848 EOF
4849 if test "$?" != 0; then
4850     echo "$cc is unable to create an executable file."
4851     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4852         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4853         echo "Only do this if you know what cross compiling means."
4854     fi
4855     die "C compiler test failed."
4856 fi
4857
4858 add_cppflags -D_ISOC99_SOURCE
4859 add_cxxflags -D__STDC_CONSTANT_MACROS
4860 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4861
4862 # some compilers silently accept -std=c11, so we also need to check that the
4863 # version macro is defined properly
4864 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4865     add_cflags -std=c11 ||
4866     check_cflags -std=c99
4867
4868 check_cppflags -D_FILE_OFFSET_BITS=64
4869 check_cppflags -D_LARGEFILE_SOURCE
4870
4871 add_host_cppflags -D_ISOC99_SOURCE
4872 check_host_cflags -std=c99
4873 check_host_cflags -Wall
4874 check_host_cflags $host_cflags_speed
4875
4876 check_64bit(){
4877     arch32=$1
4878     arch64=$2
4879     expr=$3
4880     check_code cc "" "int test[2*($expr) - 1]" &&
4881         subarch=$arch64 || subarch=$arch32
4882 }
4883
4884 case "$arch" in
4885     aarch64|alpha|ia64)
4886         spic=$shared
4887     ;;
4888     mips)
4889         check_64bit mips mips64 '_MIPS_SIM > 1'
4890         spic=$shared
4891     ;;
4892     parisc)
4893         check_64bit parisc parisc64 'sizeof(void *) > 4'
4894         spic=$shared
4895     ;;
4896     ppc)
4897         check_64bit ppc ppc64 'sizeof(void *) > 4'
4898         spic=$shared
4899     ;;
4900     s390)
4901         check_64bit s390 s390x 'sizeof(void *) > 4'
4902         spic=$shared
4903     ;;
4904     sparc)
4905         check_64bit sparc sparc64 'sizeof(void *) > 4'
4906         spic=$shared
4907     ;;
4908     x86)
4909         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4910         # Treat x32 as x64 for now. Note it also needs spic=$shared
4911         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4912             subarch=x86_64
4913         if test "$subarch" = "x86_64"; then
4914             spic=$shared
4915         fi
4916     ;;
4917     ppc)
4918         check_cc <<EOF && subarch="ppc64"
4919         int test[(int)sizeof(char*) - 7];
4920 EOF
4921     ;;
4922 esac
4923
4924 enable $subarch
4925 enabled spic && enable_weak pic
4926
4927 enabled x86_64 && objformat=elf64 || objformat="elf32"
4928
4929 # OS specific
4930 case $target_os in
4931     aix)
4932         SHFLAGS=-shared
4933         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4934         enabled shared && add_ldflags -Wl,-brtl
4935         ;;
4936     android)
4937         disable symver
4938         enable section_data_rel_ro
4939         SLIB_INSTALL_NAME='$(SLIBNAME)'
4940         SLIB_INSTALL_LINKS=
4941         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4942         ;;
4943     haiku)
4944         prefix_default="/boot/common"
4945         network_extralibs="-lnetwork"
4946         host_extralibs=
4947         ;;
4948     sunos)
4949         SHFLAGS='-shared -Wl,-h,$$(@F)'
4950         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4951         network_extralibs="-lsocket -lnsl"
4952         add_cppflags -D__EXTENSIONS__
4953         # When using suncc to build, the Solaris linker will mark
4954         # an executable with each instruction set encountered by
4955         # the Solaris assembler.  As our libraries contain their own
4956         # guards for processor-specific code, instead suppress
4957         # generation of the HWCAPS ELF section on Solaris x86 only.
4958         enabled_all suncc x86 &&
4959             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4960             add_ldflags -Wl,-M,mapfile
4961         nm_default='nm -P -g'
4962         version_script='-M'
4963         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4964         ;;
4965     netbsd)
4966         disable symver
4967         oss_indev_extralibs="-lossaudio"
4968         oss_outdev_extralibs="-lossaudio"
4969         enabled gcc || check_ldflags -Wl,-zmuldefs
4970         ;;
4971     openbsd|bitrig)
4972         disable symver
4973         SHFLAGS='-shared'
4974         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4975         SLIB_INSTALL_LINKS=
4976         oss_indev_extralibs="-lossaudio"
4977         oss_outdev_extralibs="-lossaudio"
4978         ;;
4979     dragonfly)
4980         disable symver
4981         ;;
4982     freebsd)
4983         ;;
4984     bsd/os)
4985         add_extralibs -lpoll -lgnugetopt
4986         strip="strip -d"
4987         ;;
4988     darwin)
4989         enabled ppc && add_asflags -force_cpusubtype_ALL
4990         install_name_dir_default='$(SHLIBDIR)'
4991         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4992         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4993         strip="${strip} -x"
4994         add_ldflags -Wl,-dynamic,-search_paths_first
4995         check_cflags -Werror=partial-availability
4996         SLIBSUF=".dylib"
4997         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4998         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4999         enabled x86_64 && objformat="macho64" || objformat="macho32"
5000         enabled_any pic shared x86_64 ||
5001             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5002         check_header dispatch/dispatch.h &&
5003             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5004         if test -n "$sysroot"; then
5005             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5006             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5007         fi
5008         version_script='-exported_symbols_list'
5009         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5010         ;;
5011     msys*)
5012         die "Native MSYS builds are discouraged, please use the MINGW environment."
5013         ;;
5014     mingw32*|mingw64*)
5015         target_os=mingw32
5016         LIBTARGET=i386
5017         if enabled x86_64; then
5018             LIBTARGET="i386:x86-64"
5019         fi
5020         if enabled shared; then
5021             # Cannot build both shared and static libs when using dllexport.
5022             disable static
5023         fi
5024         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5025         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5026         shlibdir_default="$bindir_default"
5027         SLIBPREF=""
5028         SLIBSUF=".dll"
5029         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5030         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5031         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5032         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5033         SLIB_INSTALL_LINKS=
5034         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5035         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5036         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5037         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5038         enabled x86_64 && objformat="win64" || objformat="win32"
5039         dlltool="${cross_prefix}dlltool"
5040         ranlib=:
5041         enable dos_paths
5042         check_ldflags -Wl,--nxcompat,--dynamicbase
5043         # Lets work around some stupidity in binutils.
5044         # ld will strip relocations from executables even though we need them
5045         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5046         # however ld then forgets what the entry point should be (oops) so we
5047         # have to manually (re)set it.
5048         if enabled x86_32; then
5049             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5050         elif enabled x86_64; then
5051             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5052             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5053             # Set image base >4GB for extra entropy with HEASLR
5054             add_ldexeflags -Wl,--image-base,0x140000000
5055             append SHFLAGS -Wl,--image-base,0x180000000
5056         fi
5057         ;;
5058     win32|win64)
5059         disable symver
5060         if enabled shared; then
5061             # Link to the import library instead of the normal static library
5062             # for shared libs.
5063             LD_LIB='%.lib'
5064             # Cannot build both shared and static libs with MSVC or icl.
5065             disable static
5066         fi
5067         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5068         shlibdir_default="$bindir_default"
5069         SLIBPREF=""
5070         SLIBSUF=".dll"
5071         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5072         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5073         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5074         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5075         SLIB_INSTALL_LINKS=
5076         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5077         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5078         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5079         enabled x86_64 && objformat="win64" || objformat="win32"
5080         ranlib=:
5081         enable dos_paths
5082         ;;
5083     cygwin*)
5084         target_os=cygwin
5085         shlibdir_default="$bindir_default"
5086         SLIBPREF="cyg"
5087         SLIBSUF=".dll"
5088         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5089         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5090         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5091         SLIB_INSTALL_LINKS=
5092         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5093         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5094         enabled x86_64 && objformat="win64" || objformat="win32"
5095         enable dos_paths
5096         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5097         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5098         ;;
5099     *-dos|freedos|opendos)
5100         network_extralibs="-lsocket"
5101         objformat="coff"
5102         enable dos_paths
5103         add_cppflags -U__STRICT_ANSI__
5104         ;;
5105     linux)
5106         enable section_data_rel_ro
5107         enabled_any arm aarch64 && enable_weak linux_perf
5108         ;;
5109     irix*)
5110         target_os=irix
5111         ranlib="echo ignoring ranlib"
5112         ;;
5113     os/2*)
5114         strip="lxlite -CS"
5115         striptype=""
5116         objformat="aout"
5117         add_cppflags -D_GNU_SOURCE
5118         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5119         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5120         LIBSUF="_s.a"
5121         SLIBPREF=""
5122         SLIBSUF=".dll"
5123         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5124         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5125         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5126             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5127             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5128             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5129             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5130         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5131             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5132         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5133         SLIB_INSTALL_LINKS=
5134         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5135         enable dos_paths
5136         enable_weak os2threads
5137         ;;
5138     gnu/kfreebsd)
5139         add_cppflags -D_BSD_SOURCE
5140         ;;
5141     gnu)
5142         ;;
5143     qnx)
5144         add_cppflags -D_QNX_SOURCE
5145         network_extralibs="-lsocket"
5146         ;;
5147     symbian)
5148         SLIBSUF=".dll"
5149         enable dos_paths
5150         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5151         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5152         add_ldflags -Wl,--target1-abs,--no-undefined \
5153                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5154                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5155         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5156                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5157                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5158         ;;
5159     minix)
5160         ;;
5161     none)
5162         ;;
5163     *)
5164         die "Unknown OS '$target_os'."
5165         ;;
5166 esac
5167
5168 # test if creating links works
5169 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5170 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5171 mkdir "$link_dest"
5172 $ln_s "$link_dest" "$link_name"
5173 touch "$link_dest/test_file"
5174 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5175     # create link to source path
5176     [ -e src ] && rm src
5177     $ln_s "$source_path" src
5178     source_link=src
5179 else
5180     # creating directory links doesn't work
5181     # fall back to using the full source path
5182     source_link="$source_path"
5183 fi
5184 # cleanup
5185 rm -r "$link_dest"
5186 rm -r "$link_name"
5187
5188 # determine libc flavour
5189
5190 probe_libc(){
5191     pfx=$1
5192     pfx_no_=${pfx%_}
5193     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5194     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5195         eval ${pfx}libc_type=uclibc
5196         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5197     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5198         eval ${pfx}libc_type=glibc
5199         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5200     # MinGW headers can be installed on Cygwin, so check for newlib first.
5201     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5202         eval ${pfx}libc_type=newlib
5203         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5204     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5205     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5206         eval ${pfx}libc_type=mingw64
5207         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5208             add_compat msvcrt/snprintf.o
5209             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5210         fi
5211         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5212         eval test \$${pfx_no_}cc_type = "gcc" &&
5213             add_${pfx}cppflags -D__printf__=__gnu_printf__
5214     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5215          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5216         eval ${pfx}libc_type=mingw32
5217         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5218             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5219             die "ERROR: MinGW32 runtime version must be >= 3.15."
5220         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5221         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5222             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5223         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5224             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5225         eval test \$${pfx_no_}cc_type = "gcc" &&
5226             add_${pfx}cppflags -D__printf__=__gnu_printf__
5227     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5228         eval ${pfx}libc_type=msvcrt
5229         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5230             if [ "$pfx" = host_ ]; then
5231                 add_host_cppflags -Dsnprintf=_snprintf
5232             else
5233                 add_compat strtod.o strtod=avpriv_strtod
5234                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5235                                              _snprintf=avpriv_snprintf  \
5236                                              vsnprintf=avpriv_vsnprintf
5237             fi
5238         fi
5239         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5240         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5241         # 0x601 by default unless something else is set by the user.
5242         # This can easily lead to us detecting functions only present
5243         # in such new versions and producing binaries requiring windows 7.0.
5244         # Therefore explicitly set the default to XP unless the user has
5245         # set something else on the command line.
5246         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5247         # family. For these cases, configure is free to use any functions
5248         # found in the SDK headers by default. (Alternatively, we could force
5249         # _WIN32_WINNT to 0x0602 in that case.)
5250         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5251             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5252 #ifdef WINAPI_FAMILY
5253 #include <winapifamily.h>
5254 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5255 #error not desktop
5256 #endif
5257 #endif
5258 EOF
5259         if [ "$pfx" = "" ]; then
5260             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5261             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5262         fi
5263     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5264         eval ${pfx}libc_type=klibc
5265     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5266         eval ${pfx}libc_type=bionic
5267     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5268         eval ${pfx}libc_type=solaris
5269         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5270     fi
5271     check_${pfx}cc <<EOF
5272 #include <time.h>
5273 void *v = localtime_r;
5274 EOF
5275 test "$?" != 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
5276 #include <time.h>
5277 void *v = localtime_r;
5278 EOF
5279
5280     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5281 }
5282
5283 probe_libc
5284 probe_libc host_
5285
5286 # hacks for compiler/libc/os combinations
5287
5288 case $libc_type in
5289     bionic)
5290         add_compat strtod.o strtod=avpriv_strtod
5291         ;;
5292     glibc)
5293         if enabled tms470; then
5294             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5295             add_cppflags -D__USER_LABEL_PREFIX__=
5296             add_cppflags -D__builtin_memset=memset
5297             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5298             add_cflags   -pds=48    # incompatible redefinition of macro
5299         fi
5300         ;;
5301 esac
5302
5303 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5304     add_cppflags '-I\$(SRC_PATH)/compat/float'
5305
5306 esc(){
5307     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5308 }
5309
5310 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5311
5312 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5313
5314 set_default libdir
5315 : ${shlibdir_default:="$libdir"}
5316 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5317
5318 set_default $PATHS_LIST
5319 set_default nm
5320
5321 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5322
5323 enable_weak_pic() {
5324     disabled pic && return
5325     enable pic
5326     add_cppflags -DPIC
5327     case "$target_os" in
5328     mingw*|cygwin*|win*)
5329         ;;
5330     *)
5331         add_cflags -fPIC
5332         add_asflags -fPIC
5333         ;;
5334     esac
5335 }
5336
5337 enabled pic && enable_weak_pic
5338
5339 check_cc <<EOF || die "Symbol mangling check failed."
5340 int ff_extern;
5341 EOF
5342 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5343 extern_prefix=${sym%%ff_extern*}
5344
5345 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5346
5347 _restrict=
5348 for restrict_keyword in restrict __restrict__ __restrict; do
5349     check_cc <<EOF && _restrict=$restrict_keyword && break
5350 void foo(char * $restrict_keyword p);
5351 EOF
5352 done
5353
5354 check_cc <<EOF && enable pragma_deprecated
5355 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5356 EOF
5357
5358 check_cc <<EOF || die "endian test failed"
5359 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5360 EOF
5361 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5362
5363 check_cc <<EOF && enable const_nan
5364 #include <math.h>
5365 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5366 EOF
5367
5368 if ! enabled ppc64 || enabled bigendian; then
5369     disable vsx
5370 fi
5371
5372 check_gas() {
5373     log "check_gas using '$as' as AS"
5374     # :vararg is used on aarch64, arm and ppc altivec
5375     check_as <<EOF || return 1
5376 .macro m n, y:vararg=0
5377 \n: .int \y
5378 .endm
5379 m x
5380 EOF
5381     # .altmacro is only used in arm asm
5382     ! enabled arm || check_as <<EOF || return 1
5383 .altmacro
5384 EOF
5385     enable gnu_as
5386     return 0
5387 }
5388
5389 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5390     nogas=:
5391     enabled_any arm aarch64 && nogas=die
5392     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5393     as_noop=-v
5394
5395     case $as_type in
5396         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5397         gcc)  gaspp_as_type=gas ;;
5398         *)    gaspp_as_type=$as_type ;;
5399     esac
5400
5401     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5402
5403     test "${as#*gas-preprocessor.pl}" != "$as" ||
5404     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5405         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5406
5407     if ! check_gas ; then
5408         as=${gas:=$as}
5409         check_gas || \
5410             $nogas "GNU assembler not found, install/update gas-preprocessor"
5411     fi
5412
5413     check_as <<EOF && enable as_func
5414 .func test
5415 .endfunc
5416 EOF
5417 fi
5418
5419 check_inline_asm inline_asm_labels '"1:\n"'
5420
5421 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5422
5423 if enabled aarch64; then
5424     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5425     # internal assembler in clang 3.3 does not support this instruction
5426     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5427     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5428
5429     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5430
5431 elif enabled alpha; then
5432
5433     check_cflags -mieee
5434
5435 elif enabled arm; then
5436
5437     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5438
5439     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5440 float func(float a, float b){ return a+b; }
5441 EOF
5442
5443     enabled thumb && check_cflags -mthumb || check_cflags -marm
5444
5445     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5446         enable vfp_args
5447     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5448         enable vfp_args
5449     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5450         case "${cross_prefix:-$cc}" in
5451             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5452             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5453 __asm__ (".eabi_attribute 28, 1");
5454 int main(void) { return 0; }
5455 EOF
5456         esac
5457         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5458     fi
5459
5460     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5461     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5462     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5463     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5464     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5465     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5466     enabled setend  && check_insn setend  'setend be'
5467
5468     [ $target_os = linux ] || [ $target_os = android ] ||
5469         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5470             $ARCH_EXT_LIST_ARM
5471
5472     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5473
5474     check_as <<EOF && enable as_arch_directive
5475 .arch armv7-a
5476 EOF
5477     check_as <<EOF && enable as_fpu_directive
5478 .fpu neon
5479 EOF
5480
5481     # llvm's integrated assembler supports .object_arch from llvm 3.5
5482     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5483         check_as <<EOF && enable as_object_arch
5484 .object_arch armv4
5485 EOF
5486
5487     # MS armasm fails to assemble our PIC constructs
5488     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5489
5490 elif enabled mips; then
5491
5492     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5493     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5494     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5495
5496     # Enable minimum ISA based on selected options
5497     if enabled mips64; then
5498         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5499         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5500         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5501     else
5502         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5503         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5504         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5505         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5506     fi
5507
5508     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5509     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5510     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5511     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5512     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5513
5514     if enabled bigendian && enabled msa; then
5515         disable msa
5516     fi
5517
5518 elif enabled parisc; then
5519
5520     if enabled gcc; then
5521         case $($cc -dumpversion) in
5522             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5523         esac
5524     fi
5525
5526 elif enabled ppc; then
5527
5528     enable local_aligned
5529
5530     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5531     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5532     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5533     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5534
5535     if enabled altivec; then
5536         check_cflags -maltivec -mabi=altivec
5537
5538         # check if our compiler supports Motorola AltiVec C API
5539         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5540                                  vector signed int v2 = (vector signed int) { 1 };
5541                                  v1 = vec_add(v1, v2);" ||
5542             disable altivec
5543
5544         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5545     fi
5546
5547     if enabled vsx; then
5548         check_cflags -mvsx &&
5549         check_code cc altivec.h "int v[4] = { 0 };
5550                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5551             disable vsx
5552     fi
5553
5554     if enabled power8; then
5555         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5556     fi
5557
5558 elif enabled x86; then
5559
5560     check_builtin rdtsc    intrin.h   "__rdtsc()"
5561     check_builtin mm_empty mmintrin.h "_mm_empty()"
5562
5563     enable local_aligned
5564
5565     # check whether EBP is available on x86
5566     # As 'i' is stored on the stack, this program will crash
5567     # if the base pointer is used to access it because the
5568     # base pointer is cleared in the inline assembly code.
5569     check_exec_crash <<EOF && enable ebp_available
5570 volatile int i=0;
5571 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5572 return i;
5573 EOF
5574
5575     # check whether EBX is available on x86
5576     check_inline_asm ebx_available '""::"b"(0)' &&
5577         check_inline_asm ebx_available '"":::"%ebx"'
5578
5579     # check whether xmm clobbers are supported
5580     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5581
5582     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5583         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5584
5585     # check whether binutils is new enough to compile SSSE3/MMXEXT
5586     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5587     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5588
5589     probe_x86asm(){
5590         x86asmexe_probe=$1
5591         if check_cmd $x86asmexe_probe -v; then
5592             x86asmexe=$x86asmexe_probe
5593             x86asm_type=nasm
5594             x86asm_debug="-g -F dwarf"
5595             X86ASMDEP=
5596             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5597         elif check_cmd $x86asmexe_probe --version; then
5598             x86asmexe=$x86asmexe_probe
5599             x86asm_type=yasm
5600             x86asm_debug="-g dwarf2"
5601             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5602             X86ASM_DEPFLAGS=
5603         fi
5604         check_x86asm "movbe ecx, [5]" && enable x86asm
5605     }
5606
5607     if ! disabled_any asm mmx x86asm; then
5608         disable x86asm
5609         for program in $x86asmexe nasm yasm; do
5610             probe_x86asm $program && break
5611         done
5612         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5613         X86ASMFLAGS="-f $objformat"
5614         enabled pic               && append X86ASMFLAGS "-DPIC"
5615         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5616         case "$objformat" in
5617             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5618         esac
5619
5620         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5621         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5622         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5623         check_x86asm "CPU amdnop" || disable cpunop
5624     fi
5625
5626     case "$cpu" in
5627         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5628             disable fast_clz
5629         ;;
5630     esac
5631
5632 fi
5633
5634 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5635
5636 check_ldflags -Wl,--as-needed
5637 check_ldflags -Wl,-z,noexecstack
5638
5639 if ! disabled network; then
5640     check_func getaddrinfo $network_extralibs
5641     check_func inet_aton $network_extralibs
5642
5643     check_type netdb.h "struct addrinfo"
5644     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5645     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5646     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5647     check_type poll.h "struct pollfd"
5648     check_type netinet/sctp.h "struct sctp_event_subscribe"
5649     check_struct "sys/socket.h" "struct msghdr" msg_flags
5650     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5651     check_type netinet/in.h "struct sockaddr_in6"
5652     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5653     check_type "sys/types.h sys/socket.h" socklen_t
5654
5655     # Prefer arpa/inet.h over winsock2
5656     if check_header arpa/inet.h ; then
5657         check_func closesocket
5658     elif check_header winsock2.h ; then
5659         check_func_headers winsock2.h closesocket -lws2 &&
5660             network_extralibs="-lws2" ||
5661         { check_func_headers winsock2.h closesocket -lws2_32 &&
5662             network_extralibs="-lws2_32"; } || disable winsock2_h network
5663         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5664
5665         check_type ws2tcpip.h socklen_t
5666         check_type ws2tcpip.h "struct addrinfo"
5667         check_type ws2tcpip.h "struct group_source_req"
5668         check_type ws2tcpip.h "struct ip_mreq_source"
5669         check_type ws2tcpip.h "struct ipv6_mreq"
5670         check_type winsock2.h "struct pollfd"
5671         check_struct winsock2.h "struct sockaddr" sa_len
5672         check_type ws2tcpip.h "struct sockaddr_in6"
5673         check_type ws2tcpip.h "struct sockaddr_storage"
5674     else
5675         disable network
5676     fi
5677 fi
5678
5679 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5680 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5681 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5682 check_builtin sarestart signal.h "SA_RESTART"
5683 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5684 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5685 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5686 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5687
5688 case "$custom_allocator" in
5689     jemalloc)
5690         # jemalloc by default does not use a prefix
5691         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5692     ;;
5693     tcmalloc)
5694         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5695         malloc_prefix=tc_
5696     ;;
5697 esac
5698
5699 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5700 check_func  ${malloc_prefix}memalign            && enable memalign
5701 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5702
5703 check_func  access
5704 check_func_headers stdlib.h arc4random
5705 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5706 check_func  fcntl
5707 check_func  fork
5708 check_func  gethrtime
5709 check_func  getopt
5710 check_func  getrusage
5711 check_func  gettimeofday
5712 check_func  isatty
5713 check_func  mkstemp
5714 check_func  mmap
5715 check_func  mprotect
5716 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5717 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5718 check_func  sched_getaffinity
5719 check_func  setrlimit
5720 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5721 check_func  strerror_r
5722 check_func  sysconf
5723 check_func  sysctl
5724 check_func  usleep
5725
5726 check_func_headers conio.h kbhit
5727 check_func_headers io.h setmode
5728 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5729 check_func_headers mach/mach_time.h mach_absolute_time
5730 check_func_headers stdlib.h getenv
5731 check_func_headers sys/stat.h lstat
5732
5733 check_func_headers windows.h GetProcessAffinityMask
5734 check_func_headers windows.h GetProcessTimes
5735 check_func_headers windows.h GetSystemTimeAsFileTime
5736 check_func_headers windows.h LoadLibrary
5737 check_func_headers windows.h MapViewOfFile
5738 check_func_headers windows.h PeekNamedPipe
5739 check_func_headers windows.h SetConsoleTextAttribute
5740 check_func_headers windows.h SetConsoleCtrlHandler
5741 check_func_headers windows.h Sleep
5742 check_func_headers windows.h VirtualAlloc
5743 check_struct windows.h "CONDITION_VARIABLE" Ptr
5744 check_func_headers glob.h glob
5745 enabled xlib &&
5746     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5747
5748 check_header direct.h
5749 check_header dirent.h
5750 check_header dxgidebug.h
5751 check_header dxva.h
5752 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5753 check_header io.h
5754 check_header libcrystalhd/libcrystalhd_if.h
5755 check_header malloc.h
5756 check_header net/udplite.h
5757 check_header poll.h
5758 check_header sys/param.h
5759 check_header sys/resource.h
5760 check_header sys/select.h
5761 check_header sys/time.h
5762 check_header sys/un.h
5763 check_header termios.h
5764 check_header unistd.h
5765 check_header valgrind/valgrind.h
5766 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5767 check_header windows.h
5768 check_header X11/extensions/XvMClib.h
5769 check_header asm/types.h
5770
5771 # it seems there are versions of clang in some distros that try to use the
5772 # gcc headers, which explodes for stdatomic
5773 # so we also check that atomics actually work here
5774 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5775
5776 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5777 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5778 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5779 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5780 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5781
5782 enabled appkit       && check_apple_framework AppKit
5783 enabled audiotoolbox && check_apple_framework AudioToolbox
5784 enabled avfoundation && check_apple_framework AVFoundation
5785 enabled coreimage    && check_apple_framework CoreImage
5786 enabled videotoolbox && check_apple_framework VideoToolbox
5787
5788 check_apple_framework CoreFoundation
5789 check_apple_framework CoreMedia
5790 check_apple_framework CoreVideo
5791
5792 enabled avfoundation && {
5793     disable coregraphics applicationservices
5794     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5795     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5796
5797 enabled videotoolbox && {
5798     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5799     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5800 }
5801
5802 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5803
5804 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5805 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5806 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5807 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5808 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5809
5810 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5811 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5812 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5813 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5814 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5815 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5816 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5817 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5818 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5819
5820 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5821
5822 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5823
5824 if ! disabled w32threads && ! enabled pthreads; then
5825     check_func_headers "windows.h process.h" _beginthreadex &&
5826         enable w32threads || disable w32threads
5827     if ! enabled w32threads && enabled winrt; then
5828         check_func_headers "windows.h" CreateThread &&
5829             enable w32threads || disable w32threads
5830     fi
5831 fi
5832
5833 # check for some common methods of building with pthread support
5834 # do this before the optional library checks as some of them require pthreads
5835 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5836     if check_lib pthreads pthread.h pthread_join   -pthread &&
5837        check_lib pthreads pthread.h pthread_create -pthread; then
5838         add_cflags -pthread
5839     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5840          check_lib pthreads pthread.h pthread_create -pthreads; then
5841         add_cflags -pthreads
5842     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5843          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5844         add_cflags -ldl -pthread
5845     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5846          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5847         :
5848     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5849          check_lib pthreads pthread.h pthread_create -lpthread; then
5850         :
5851     elif check_func pthread_join && check_func pthread_create; then
5852         enable pthreads
5853     fi
5854     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5855 fi
5856
5857
5858 if enabled pthreads; then
5859   check_func pthread_cancel $pthreads_extralibs
5860 fi
5861
5862 enabled pthreads &&
5863     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5864
5865 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5866 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5867 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5868
5869 # On some systems dynamic loading requires no extra linker flags
5870 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5871
5872 check_lib libm math.h sin -lm
5873
5874 atan2f_args=2
5875 copysign_args=2
5876 hypot_args=2
5877 ldexpf_args=2
5878 powf_args=2
5879
5880 for func in $MATH_FUNCS; do
5881     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5882 done
5883
5884 for func in $COMPLEX_FUNCS; do
5885     eval check_complexfunc $func \${${func}_args:-1}
5886 done
5887
5888 # these are off by default, so fail if requested and not available
5889 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5890 enabled cuvid             && { enabled cuda ||
5891                                die "ERROR: CUVID requires CUDA"; }
5892 enabled nvdec             && { enabled cuda ||
5893                                die "ERROR: NVDEC hwaccel requires CUDA"; }
5894 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5895 enabled decklink          && { require_header DeckLinkAPI.h &&
5896                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5897 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5898 enabled frei0r            && require_header frei0r.h
5899 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5900 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5901 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5902 enabled ladspa            && require_header ladspa.h
5903 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5904 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5905 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5906 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5907 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5908                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5909                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5910 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5911 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5912 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5913 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5914                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5915                                  warn "using libfdk without pkg-config"; } }
5916 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"
5917 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5918 enabled fontconfig        && enable libfontconfig
5919 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5920 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5921 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5922 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5923                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5924 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5925                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5926                                done || die "ERROR: libgsm not found"; }
5927 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5928 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5929 # While it may appear that require is being used as a pkg-config
5930 # fallback for libmfx, it is actually being used to detect a different
5931 # installation route altogether.  If libmfx is installed via the Intel
5932 # Media SDK or Intel Media Server Studio, these don't come with
5933 # pkg-config support.  Instead, users should make sure that the build
5934 # can find the libraries and headers through other means.
5935 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5936                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5937 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5938 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5939 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5940 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5941                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5942                                die "ERROR: libnpp not found"; }
5943 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5944 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5945 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5946                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5947                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5948                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5949 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5950 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5951                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5952 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5953 enabled libopus           && {
5954     enabled libopus_decoder && {
5955         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5956     }
5957     enabled libopus_encoder && {
5958         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5959     }
5960 }
5961 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5962 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5963 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5964 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5965 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5966 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5967                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5968 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5969 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5970 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5971 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5972 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5973 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5974 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5975                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5976                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5977 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5978 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5979 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5980 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5981 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5982                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5983
5984 enabled libvpx            && {
5985     enabled libvpx_vp8_decoder && {
5986         check_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5987             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5988                 die "ERROR: libvpx decoder version must be >=0.9.1";
5989     }
5990     enabled libvpx_vp8_encoder && {
5991         check_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5992             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5993                 die "ERROR: libvpx encoder version must be >=0.9.7";
5994     }
5995     enabled libvpx_vp9_decoder && {
5996         check_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5997             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5998     }
5999     enabled libvpx_vp9_encoder && {
6000         check_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6001             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6002     }
6003     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6004         die "libvpx enabled but no supported decoders found"
6005     fi
6006 }
6007
6008 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6009 enabled libwebp           && {
6010     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6011     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6012 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6013                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6014                                  warn "using libx264 without pkg-config"; } } &&
6015                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6016                              { check_cpp_condition x264.h "X264_MPEG2" &&
6017                                enable libx262; }
6018 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6019                              require_cpp_condition x265.h "X265_BUILD >= 68"
6020 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6021 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6022 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
6023 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6024 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6025                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6026                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6027 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6028 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6029 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6030                                { ! enabled cross_compile &&
6031                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6032                                  add_ldflags -L/opt/vc/lib/ &&
6033                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6034                                die "ERROR: mmal not found" &&
6035                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6036 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6037                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6038                                die "ERROR: openal not found"; } &&
6039                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6040                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6041 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6042                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6043                                die "ERROR: opencl not found"; } &&
6044                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6045                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6046                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6047 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6048                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6049                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6050                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6051                                die "ERROR: opengl not found."
6052                              }
6053 enabled omx               && require_header OMX_Core.h
6054 enabled omx_rpi           && { check_header OMX_Core.h ||
6055                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6056                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6057 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6058                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6059                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6060                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6061                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6062                                die "ERROR: openssl not found"; }
6063 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
6064                                  die "ERROR : Rockchip MPP was not found."; } &&
6065                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
6066                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
6067                                { enabled libdrm ||
6068                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6069                              }
6070
6071 if enabled gcrypt; then
6072     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6073     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6074         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6075         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6076         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6077             die "ERROR: gcrypt not found"
6078         add_cflags $gcrypt_cflags
6079     else
6080         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6081     fi
6082 fi
6083
6084 if enabled sdl2; then
6085     SDL2_CONFIG="${cross_prefix}sdl2-config"
6086     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6087         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6088             disable sdl2
6089     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6090         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6091         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6092         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6093         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6094         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6095             enable sdl2
6096     fi
6097     if test $target_os = "mingw32"; then
6098         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6099     fi
6100 fi
6101
6102 if enabled decklink; then
6103     case $target_os in
6104         mingw32*|mingw64*|win32|win64)
6105             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6106             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6107             ;;
6108     esac
6109 fi
6110
6111 enabled securetransport &&
6112     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6113     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6114         disable securetransport
6115
6116 enabled schannel &&
6117     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6118     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6119     schannel_extralibs="-lsecur32" ||
6120         disable schannel
6121
6122 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6123 enabled makeinfo \
6124     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6125     && enable makeinfo_html || disable makeinfo_html
6126 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6127 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6128 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6129 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6130
6131 # check V4L2 codecs available in the API
6132 check_header linux/fb.h
6133 check_header linux/videodev2.h
6134 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6135 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6136 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6137 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6138 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6139 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6140 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6141 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6142 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6143 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6144 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6145
6146 check_header sys/videoio.h
6147 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6148
6149 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6150 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6151 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6152 # w32api 3.12 had it defined wrong
6153 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6154
6155 check_type "dshow.h" IBaseFilter
6156
6157 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6158 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6159     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6160     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6161     check_header "dev/ic/bt8xx.h"
6162
6163 if check_struct sys/soundcard.h audio_buf_info bytes; then
6164     enable_sanitized sys/soundcard.h
6165 else
6166     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6167     #include <sys/soundcard.h>
6168     audio_buf_info abc;
6169 EOF
6170 fi
6171
6172 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6173     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6174
6175 enabled libjack &&
6176     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6177
6178 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6179
6180 if enabled libcdio; then
6181     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6182     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6183     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6184     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6185     die "ERROR: No usable libcdio/cdparanoia found"
6186 fi
6187
6188 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6189     disable libxcb_shm libxcb_shape libxcb_xfixes
6190
6191 if enabled libxcb; then
6192     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6193     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6194     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6195 fi
6196
6197 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6198
6199 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6200 # the desktop api partition
6201 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6202 #ifdef WINAPI_FAMILY
6203 #include <winapifamily.h>
6204 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6205 #error desktop, not uwp
6206 #else
6207 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6208 #endif
6209 #else
6210 #error no family set
6211 #endif
6212 EOF
6213
6214 enabled vaapi &&
6215     check_lib vaapi va/va.h vaInitialize -lva
6216
6217 enabled vaapi &&
6218     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6219     disable vaapi
6220
6221 enabled vaapi &&
6222     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6223
6224 enabled vaapi &&
6225     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6226
6227 enabled vaapi &&
6228     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6229     enable vaapi_1
6230
6231 enabled vdpau &&
6232     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6233     disable vdpau
6234
6235 enabled vdpau &&
6236     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6237
6238 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6239
6240 if enabled x86; then
6241     case $target_os in
6242         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6243             ;;
6244         *)
6245             disable cuda cuvid nvdec nvenc
6246             ;;
6247     esac
6248 else
6249     disable cuda cuvid nvdec nvenc
6250 fi
6251
6252 enabled nvenc &&
6253     check_cc -I$source_path <<EOF || disable nvenc
6254 #include "compat/nvenc/nvEncodeAPI.h"
6255 NV_ENCODE_API_FUNCTION_LIST flist;
6256 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6257 int main(void) { return 0; }
6258 EOF
6259
6260 # Funny iconv installations are not unusual, so check it after all flags have been set
6261 if enabled libc_iconv; then
6262     check_func_headers iconv.h iconv
6263 elif enabled iconv; then
6264     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6265 fi
6266
6267 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6268
6269 # add some useful compiler flags if supported
6270 check_cflags -Wdeclaration-after-statement
6271 check_cflags -Wall
6272 check_cflags -Wdisabled-optimization
6273 check_cflags -Wpointer-arith
6274 check_cflags -Wredundant-decls
6275 check_cflags -Wwrite-strings
6276 check_cflags -Wtype-limits
6277 check_cflags -Wundef
6278 check_cflags -Wmissing-prototypes
6279 check_cflags -Wno-pointer-to-int-cast
6280 check_cflags -Wstrict-prototypes
6281 check_cflags -Wempty-body
6282
6283 if enabled extra_warnings; then
6284     check_cflags -Wcast-qual
6285     check_cflags -Wextra
6286     check_cflags -Wpedantic
6287 fi
6288
6289 check_disable_warning(){
6290     warning_flag=-W${1#-Wno-}
6291     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6292 }
6293
6294 test_cflags -Werror=unused-command-line-argument &&
6295     append unknown_warning_flags "-Werror=unused-command-line-argument"
6296 test_cflags -Werror=unknown-warning-option &&
6297     append unknown_warning_flags "-Werror=unknown-warning-option"
6298
6299 check_disable_warning -Wno-parentheses
6300 check_disable_warning -Wno-switch
6301 check_disable_warning -Wno-format-zero-length
6302 check_disable_warning -Wno-pointer-sign
6303 check_disable_warning -Wno-unused-const-variable
6304 check_disable_warning -Wno-bool-operation
6305
6306 check_disable_warning_headers(){
6307     warning_flag=-W${1#-Wno-}
6308     test_cflags $warning_flag && add_cflags_headers $1
6309 }
6310
6311 check_disable_warning_headers -Wno-deprecated-declarations
6312 check_disable_warning_headers -Wno-unused-variable
6313
6314 check_cc <<EOF && enable blocks_extension
6315 void (^block)(void);
6316 EOF
6317
6318 # add some linker flags
6319 check_ldflags -Wl,--warn-common
6320 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6321 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6322 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6323
6324 # add some strip flags
6325 check_stripflags -x
6326
6327 enabled neon_clobber_test &&
6328     check_ldflags -Wl,--wrap,avcodec_open2              \
6329                   -Wl,--wrap,avcodec_decode_audio4      \
6330                   -Wl,--wrap,avcodec_decode_video2      \
6331                   -Wl,--wrap,avcodec_decode_subtitle2   \
6332                   -Wl,--wrap,avcodec_encode_audio2      \
6333                   -Wl,--wrap,avcodec_encode_video2      \
6334                   -Wl,--wrap,avcodec_encode_subtitle    \
6335                   -Wl,--wrap,avcodec_send_packet        \
6336                   -Wl,--wrap,avcodec_receive_packet     \
6337                   -Wl,--wrap,avcodec_send_frame         \
6338                   -Wl,--wrap,avcodec_receive_frame      \
6339                   -Wl,--wrap,swr_convert                \
6340                   -Wl,--wrap,avresample_convert ||
6341     disable neon_clobber_test
6342
6343 enabled xmm_clobber_test &&
6344     check_ldflags -Wl,--wrap,avcodec_open2              \
6345                   -Wl,--wrap,avcodec_decode_audio4      \
6346                   -Wl,--wrap,avcodec_decode_video2      \
6347                   -Wl,--wrap,avcodec_decode_subtitle2   \
6348                   -Wl,--wrap,avcodec_encode_audio2      \
6349                   -Wl,--wrap,avcodec_encode_video2      \
6350                   -Wl,--wrap,avcodec_encode_subtitle    \
6351                   -Wl,--wrap,avcodec_send_packet        \
6352                   -Wl,--wrap,avcodec_receive_packet     \
6353                   -Wl,--wrap,avcodec_send_frame         \
6354                   -Wl,--wrap,avcodec_receive_frame      \
6355                   -Wl,--wrap,swr_convert                \
6356                   -Wl,--wrap,avresample_convert         \
6357                   -Wl,--wrap,sws_scale ||
6358     disable xmm_clobber_test
6359
6360 check_ld "cc" <<EOF && enable proper_dce
6361 extern const int array[512];
6362 static inline int func(void) { return array[0]; }
6363 int main(void) { return 0; }
6364 EOF
6365
6366 if enabled proper_dce; then
6367     echo "X { local: *; };" > $TMPV
6368     if test_ldflags -Wl,${version_script},$TMPV; then
6369         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6370         check_cc <<EOF && enable symver_asm_label
6371 void ff_foo(void) __asm__ ("av_foo@VERSION");
6372 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6373 EOF
6374         check_cc <<EOF && enable symver_gnu_asm
6375 __asm__(".symver ff_foo,av_foo@VERSION");
6376 void ff_foo(void) {}
6377 EOF
6378     fi
6379 fi
6380
6381 if [ -z "$optflags" ]; then
6382     if enabled small; then
6383         optflags=$cflags_size
6384     elif enabled optimizations; then
6385         optflags=$cflags_speed
6386     else
6387         optflags=$cflags_noopt
6388     fi
6389 fi
6390
6391 if [ -z "$nvccflags" ]; then
6392     nvccflags=$nvccflags_default
6393 fi
6394
6395 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6396     nvccflags="$nvccflags -m64"
6397 else
6398     nvccflags="$nvccflags -m32"
6399 fi
6400
6401 check_optflags(){
6402     check_cflags "$@"
6403     enabled lto && check_ldflags "$@"
6404 }
6405
6406 check_optflags $optflags
6407 check_optflags -fno-math-errno
6408 check_optflags -fno-signed-zeros
6409
6410 if enabled lto; then
6411     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6412     check_cflags  -flto
6413     check_ldflags -flto $cpuflags
6414     disable inline_asm_direct_symbol_refs
6415 fi
6416
6417 enabled ftrapv && check_cflags -ftrapv
6418
6419 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6420 int x;
6421 EOF
6422
6423
6424 if enabled icc; then
6425     # Just warnings, no remarks
6426     check_cflags -w1
6427     # -wd: Disable following warnings
6428     # 144, 167, 556: -Wno-pointer-sign
6429     # 188: enumerated type mixed with another type
6430     # 1292: attribute "foo" ignored
6431     # 1419: external declaration in primary source file
6432     # 10006: ignoring unknown option -fno-signed-zeros
6433     # 10148: ignoring unknown option -Wno-parentheses
6434     # 10156: ignoring option '-W'; no argument required
6435     # 13200: No EMMS instruction before call to function
6436     # 13203: No EMMS instruction before return from function
6437     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6438     # 11030: Warning unknown option --as-needed
6439     # 10156: ignoring option '-export'; no argument required
6440     check_ldflags -wd10156,11030
6441     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6442     enable ebp_available
6443     # The test above does not test linking
6444     enabled lto && disable symver_asm_label
6445     if enabled x86_32; then
6446         icc_version=$($cc -dumpversion)
6447         test ${icc_version%%.*} -ge 11 &&
6448             check_cflags -falign-stack=maintain-16-byte ||
6449             disable aligned_stack
6450     fi
6451 elif enabled gcc; then
6452     check_optflags -fno-tree-vectorize
6453     check_cflags -Werror=format-security
6454     check_cflags -Werror=implicit-function-declaration
6455     check_cflags -Werror=missing-prototypes
6456     check_cflags -Werror=return-type
6457     check_cflags -Werror=vla
6458     check_cflags -Wformat
6459     check_cflags -fdiagnostics-color=auto
6460     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6461 elif enabled llvm_gcc; then
6462     check_cflags -mllvm -stack-alignment=16
6463 elif enabled clang; then
6464     check_cflags -mllvm -stack-alignment=16
6465     check_cflags -mstack-alignment=16
6466     check_cflags -Qunused-arguments
6467     check_cflags -Werror=implicit-function-declaration
6468     check_cflags -Werror=missing-prototypes
6469     check_cflags -Werror=return-type
6470 elif enabled cparser; then
6471     add_cflags -Wno-missing-variable-declarations
6472     add_cflags -Wno-empty-statement
6473 elif enabled armcc; then
6474     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6475     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6476     # 2523: use of inline assembly is deprecated
6477     add_cflags -W${armcc_opt},--diag_suppress=2523
6478     add_cflags -W${armcc_opt},--diag_suppress=1207
6479     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6480     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6481     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6482     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6483 elif enabled tms470; then
6484     add_cflags -pds=824 -pds=837
6485     disable inline_asm
6486 elif enabled pathscale; then
6487     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6488     disable inline_asm
6489 elif enabled_any msvc icl; then
6490     enabled x86_32 && disable aligned_stack
6491     enabled_all x86_32 debug && add_cflags -Oy-
6492     enabled debug && add_ldflags -debug
6493     enable pragma_deprecated
6494     if enabled icl; then
6495         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6496         # (correctly) on icl 13.x.
6497         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6498             add_cflags -Qansi-alias
6499         # Some inline asm is not compilable in debug
6500         if enabled debug; then
6501             disable ebp_available
6502             disable ebx_available
6503         fi
6504     fi
6505     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6506     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6507     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6508     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6509     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6510     # MSVC 2013 and newer can handle it fine.
6511     # If this declspec fails, force including stdlib.h before the restrict redefinition
6512     # happens in config.h.
6513     if [ $_restrict != restrict ]; then
6514         check_cc <<EOF || add_cflags -FIstdlib.h
6515 __declspec($_restrict) void* foo(int);
6516 EOF
6517     fi
6518     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6519     # Issue has been fixed in MSVC v19.00.24218.
6520     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6521         check_cflags -d2SSAOptimizer-
6522     # enable utf-8 source processing on VS2015 U2 and newer
6523     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6524         add_cflags -utf-8
6525 fi
6526
6527 for pfx in "" host_; do
6528     varname=${pfx%_}cc_type
6529     eval "type=\$$varname"
6530     if [ "$type" = "msvc" ]; then
6531         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6532 static inline int foo(int a) { return a; }
6533 EOF
6534     fi
6535 done
6536
6537 case $as_type in
6538     clang)
6539         add_asflags -Qunused-arguments
6540     ;;
6541 esac
6542
6543 case $ld_type in
6544     clang)
6545         check_ldflags -Qunused-arguments
6546     ;;
6547 esac
6548
6549 enable frame_thread_encoder
6550
6551 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6552
6553 check_deps $CONFIG_LIST       \
6554            $CONFIG_EXTRA      \
6555            $HAVE_LIST         \
6556            $ALL_COMPONENTS    \
6557
6558 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"
6559
6560
6561 if test $target_os = "haiku"; then
6562     disable memalign
6563     disable posix_memalign
6564 fi
6565
6566 flatten_extralibs(){
6567     unset nested_entries
6568     list_name=$1
6569     eval list=\$${1}
6570     for entry in $list; do
6571         entry_copy=$entry
6572         resolve entry_copy
6573         append nested_entries $(filter '*_extralibs' $entry_copy)
6574         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6575         eval $entry="\$flat_entries"
6576     done
6577     append $list_name "$nested_entries"
6578
6579     resolve nested_entries
6580     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6581         flatten_extralibs $list_name
6582     fi
6583 }
6584
6585 for linkunit in $LIBRARY_LIST; do
6586     unset current_extralibs
6587     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6588     for comp in ${components}; do
6589         enabled $comp || continue
6590         comp_extralibs="${comp}_extralibs"
6591         append current_extralibs $comp_extralibs
6592     done
6593     eval prepend ${linkunit}_extralibs $current_extralibs
6594 done
6595
6596 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6597     flatten_extralibs ${linkunit}_extralibs
6598     unique  ${linkunit}_extralibs
6599     resolve ${linkunit}_extralibs
6600     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
6601 done
6602
6603 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6604
6605 for thread in $THREADS_LIST; do
6606     if enabled $thread; then
6607         test -n "$thread_type" &&
6608             die "ERROR: Only one thread type must be selected." ||
6609             thread_type="$thread"
6610     fi
6611 done
6612
6613 if disabled stdatomic; then
6614     if enabled atomics_gcc; then
6615         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6616     elif enabled atomics_win32; then
6617         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6618     elif enabled atomics_suncc; then
6619         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6620     elif enabled pthreads; then
6621         add_compat atomics/pthread/stdatomic.o
6622         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6623     else
6624         enabled threads && die "Threading is enabled, but no atomics are available"
6625         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6626     fi
6627 fi
6628
6629 # Check if requested libraries were found.
6630 for lib in $AUTODETECT_LIBS; do
6631     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6632 done
6633
6634 enabled zlib && add_cppflags -DZLIB_CONST
6635
6636 # conditional library dependencies, in linking order
6637 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6638 enabled afir_filter         && prepend avfilter_deps "avcodec"
6639 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6640 enabled aresample_filter    && prepend avfilter_deps "swresample"
6641 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6642 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6643 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6644 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6645 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6646 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6647 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6648 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6649 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6650 enabled pan_filter          && prepend avfilter_deps "swresample"
6651 enabled pp_filter           && prepend avfilter_deps "postproc"
6652 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6653 enabled resample_filter && prepend avfilter_deps "avresample"
6654 enabled sab_filter          && prepend avfilter_deps "swscale"
6655 enabled scale_filter    && prepend avfilter_deps "swscale"
6656 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6657 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6658 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6659 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6660 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6661 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6662 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6663 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6664 enabled spp_filter          && prepend avfilter_deps "avcodec"
6665 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6666 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6667 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6668
6669 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6670
6671 #FIXME
6672 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6673
6674 enabled opus_decoder    && prepend avcodec_deps "swresample"
6675
6676 expand_deps(){
6677     lib_deps=${1}_deps
6678     eval "deps=\$$lib_deps"
6679     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6680     unique $lib_deps
6681 }
6682
6683 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6684 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6685
6686 map 'expand_deps $v' $LIBRARY_LIST
6687
6688 license="LGPL version 2.1 or later"
6689 if enabled nonfree; then
6690     license="nonfree and unredistributable"
6691 elif enabled gplv3; then
6692     license="GPL version 3 or later"
6693 elif enabled lgplv3; then
6694     license="LGPL version 3 or later"
6695 elif enabled gpl; then
6696     license="GPL version 2 or later"
6697 fi
6698
6699 if test "$quiet" != "yes"; then
6700
6701 echo "install prefix            $prefix"
6702 echo "source path               $source_path"
6703 echo "C compiler                $cc"
6704 echo "C library                 $libc_type"
6705 if test "$host_cc" != "$cc"; then
6706     echo "host C compiler           $host_cc"
6707     echo "host C library            $host_libc_type"
6708 fi
6709 echo "ARCH                      $arch ($cpu)"
6710 if test "$build_suffix" != ""; then
6711     echo "build suffix              $build_suffix"
6712 fi
6713 if test "$progs_suffix" != ""; then
6714     echo "progs suffix              $progs_suffix"
6715 fi
6716 if test "$extra_version" != ""; then
6717     echo "version string suffix     $extra_version"
6718 fi
6719 echo "big-endian                ${bigendian-no}"
6720 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6721 if enabled x86; then
6722     echo "standalone assembly       ${x86asm-no}"
6723     echo "x86 assembler             ${x86asmexe}"
6724     echo "MMX enabled               ${mmx-no}"
6725     echo "MMXEXT enabled            ${mmxext-no}"
6726     echo "3DNow! enabled            ${amd3dnow-no}"
6727     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6728     echo "SSE enabled               ${sse-no}"
6729     echo "SSSE3 enabled             ${ssse3-no}"
6730     echo "AESNI enabled             ${aesni-no}"
6731     echo "AVX enabled               ${avx-no}"
6732     echo "AVX2 enabled              ${avx2-no}"
6733     echo "XOP enabled               ${xop-no}"
6734     echo "FMA3 enabled              ${fma3-no}"
6735     echo "FMA4 enabled              ${fma4-no}"
6736     echo "i686 features enabled     ${i686-no}"
6737     echo "CMOV is fast              ${fast_cmov-no}"
6738     echo "EBX available             ${ebx_available-no}"
6739     echo "EBP available             ${ebp_available-no}"
6740 fi
6741 if enabled aarch64; then
6742     echo "NEON enabled              ${neon-no}"
6743     echo "VFP enabled               ${vfp-no}"
6744 fi
6745 if enabled arm; then
6746     echo "ARMv5TE enabled           ${armv5te-no}"
6747     echo "ARMv6 enabled             ${armv6-no}"
6748     echo "ARMv6T2 enabled           ${armv6t2-no}"
6749     echo "VFP enabled               ${vfp-no}"
6750     echo "NEON enabled              ${neon-no}"
6751     echo "THUMB enabled             ${thumb-no}"
6752 fi
6753 if enabled mips; then
6754     echo "MIPS FPU enabled          ${mipsfpu-no}"
6755     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6756     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6757     echo "MIPS MSA enabled          ${msa-no}"
6758     echo "LOONGSON MMI enabled      ${mmi-no}"
6759 fi
6760 if enabled ppc; then
6761     echo "AltiVec enabled           ${altivec-no}"
6762     echo "VSX enabled               ${vsx-no}"
6763     echo "POWER8 enabled            ${power8-no}"
6764     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6765     echo "dcbzl available           ${dcbzl-no}"
6766 fi
6767 echo "debug symbols             ${debug-no}"
6768 echo "strip symbols             ${stripping-no}"
6769 echo "optimize for size         ${small-no}"
6770 echo "optimizations             ${optimizations-no}"
6771 echo "static                    ${static-no}"
6772 echo "shared                    ${shared-no}"
6773 echo "postprocessing support    ${postproc-no}"
6774 echo "network support           ${network-no}"
6775 echo "threading support         ${thread_type-no}"
6776 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6777 echo "texi2html enabled         ${texi2html-no}"
6778 echo "perl enabled              ${perl-no}"
6779 echo "pod2man enabled           ${pod2man-no}"
6780 echo "makeinfo enabled          ${makeinfo-no}"
6781 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6782 test -n "$random_seed" &&
6783     echo "random seed               ${random_seed}"
6784 echo
6785
6786 echo "External libraries:"
6787 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6788 echo
6789
6790 echo "External libraries providing hardware acceleration:"
6791 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6792 echo
6793
6794 echo "Libraries:"
6795 print_enabled '' $LIBRARY_LIST | print_in_columns
6796 echo
6797
6798 echo "Programs:"
6799 print_enabled '' $PROGRAM_LIST | print_in_columns
6800 echo
6801
6802 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6803     echo "Enabled ${type}s:"
6804     eval list=\$$(toupper $type)_LIST
6805     print_enabled '_*' $list | print_in_columns
6806     echo
6807 done
6808
6809 if test -n "$ignore_tests"; then
6810     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6811     echo "Ignored FATE tests:"
6812     echo $ignore_tests | print_in_columns
6813     echo
6814 fi
6815
6816 echo "License: $license"
6817
6818 echo "Creating configuration files ..."
6819
6820 fi # test "$quiet" != "yes"
6821
6822 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6823
6824 enabled stripping || strip="echo skipping strip"
6825 enabled stripping || striptype=""
6826
6827 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6828
6829 cat > ffbuild/config.mak <<EOF
6830 # Automatically generated by configure - do not modify!
6831 ifndef FFMPEG_CONFIG_MAK
6832 FFMPEG_CONFIG_MAK=1
6833 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6834 prefix=$prefix
6835 LIBDIR=\$(DESTDIR)$libdir
6836 SHLIBDIR=\$(DESTDIR)$shlibdir
6837 INCDIR=\$(DESTDIR)$incdir
6838 BINDIR=\$(DESTDIR)$bindir
6839 DATADIR=\$(DESTDIR)$datadir
6840 DOCDIR=\$(DESTDIR)$docdir
6841 MANDIR=\$(DESTDIR)$mandir
6842 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6843 INSTALL_NAME_DIR=$install_name_dir
6844 SRC_PATH=$source_path
6845 SRC_LINK=$source_link
6846 ifndef MAIN_MAKEFILE
6847 SRC_PATH:=\$(SRC_PATH:.%=..%)
6848 endif
6849 CC_IDENT=$cc_ident
6850 ARCH=$arch
6851 INTRINSICS=$intrinsics
6852 CC=$cc
6853 CXX=$cxx
6854 AS=$as
6855 OBJCC=$objcc
6856 LD=$ld
6857 DEPCC=$dep_cc
6858 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6859 DEPAS=$as
6860 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6861 X86ASM=$x86asmexe
6862 DEPX86ASM=$x86asmexe
6863 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6864 AR=$ar
6865 ARFLAGS=$arflags
6866 AR_O=$ar_o
6867 AR_CMD=$ar
6868 NM_CMD=$nm
6869 RANLIB=$ranlib
6870 STRIP=$strip
6871 STRIPTYPE=$striptype
6872 NVCC=$nvcc
6873 CP=cp -p
6874 LN_S=$ln_s
6875 CPPFLAGS=$CPPFLAGS
6876 CFLAGS=$CFLAGS
6877 CXXFLAGS=$CXXFLAGS
6878 OBJCFLAGS=$OBJCFLAGS
6879 ASFLAGS=$ASFLAGS
6880 NVCCFLAGS=$nvccflags
6881 AS_C=$AS_C
6882 AS_O=$AS_O
6883 OBJCC_C=$OBJCC_C
6884 OBJCC_E=$OBJCC_E
6885 OBJCC_O=$OBJCC_O
6886 CC_C=$CC_C
6887 CC_E=$CC_E
6888 CC_O=$CC_O
6889 CXX_C=$CXX_C
6890 CXX_O=$CXX_O
6891 NVCC_C=$NVCC_C
6892 NVCC_O=$NVCC_O
6893 LD_O=$LD_O
6894 X86ASM_O=$X86ASM_O
6895 LD_LIB=$LD_LIB
6896 LD_PATH=$LD_PATH
6897 DLLTOOL=$dlltool
6898 WINDRES=$windres
6899 DEPWINDRES=$dep_cc
6900 DOXYGEN=$doxygen
6901 LDFLAGS=$LDFLAGS
6902 LDEXEFLAGS=$LDEXEFLAGS
6903 LDSOFLAGS=$LDSOFLAGS
6904 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6905 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6906 X86ASMFLAGS=$X86ASMFLAGS
6907 BUILDSUF=$build_suffix
6908 PROGSSUF=$progs_suffix
6909 FULLNAME=$FULLNAME
6910 LIBPREF=$LIBPREF
6911 LIBSUF=$LIBSUF
6912 LIBNAME=$LIBNAME
6913 SLIBPREF=$SLIBPREF
6914 SLIBSUF=$SLIBSUF
6915 EXESUF=$EXESUF
6916 EXTRA_VERSION=$extra_version
6917 CCDEP=$CCDEP
6918 CXXDEP=$CXXDEP
6919 CCDEP_FLAGS=$CCDEP_FLAGS
6920 ASDEP=$ASDEP
6921 ASDEP_FLAGS=$ASDEP_FLAGS
6922 X86ASMDEP=$X86ASMDEP
6923 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6924 CC_DEPFLAGS=$CC_DEPFLAGS
6925 AS_DEPFLAGS=$AS_DEPFLAGS
6926 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6927 HOSTCC=$host_cc
6928 HOSTLD=$host_ld
6929 HOSTCFLAGS=$host_cflags
6930 HOSTCPPFLAGS=$host_cppflags
6931 HOSTEXESUF=$HOSTEXESUF
6932 HOSTLDFLAGS=$host_ldflags
6933 HOSTEXTRALIBS=$host_extralibs
6934 DEPHOSTCC=$host_cc
6935 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6936 HOSTCCDEP=$HOSTCCDEP
6937 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6938 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6939 HOSTCC_C=$HOSTCC_C
6940 HOSTCC_O=$HOSTCC_O
6941 HOSTLD_O=$HOSTLD_O
6942 TARGET_EXEC=$target_exec $target_exec_args
6943 TARGET_PATH=$target_path
6944 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6945 CFLAGS-ffplay=${sdl2_cflags}
6946 CFLAGS_HEADERS=$CFLAGS_HEADERS
6947 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6948 EXTRALIBS=$extralibs
6949 COMPAT_OBJS=$compat_objs
6950 INSTALL=$install
6951 LIBTARGET=${LIBTARGET}
6952 SLIBNAME=${SLIBNAME}
6953 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6954 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6955 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6956 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6957 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6958 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6959 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6960 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6961 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6962 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6963 NOREDZONE_FLAGS=$noredzone_flags
6964 LIBFUZZER_PATH=$libfuzzer_path
6965 IGNORE_TESTS=$ignore_tests
6966 EOF
6967
6968 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6969
6970 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6971     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6972 done
6973
6974 cat > $TMPH <<EOF
6975 /* Automatically generated by configure - do not modify! */
6976 #ifndef FFMPEG_CONFIG_H
6977 #define FFMPEG_CONFIG_H
6978 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6979 #define FFMPEG_LICENSE "$(c_escape $license)"
6980 #define CONFIG_THIS_YEAR 2017
6981 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6982 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6983 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6984 #define av_restrict $_restrict
6985 #define EXTERN_PREFIX "${extern_prefix}"
6986 #define EXTERN_ASM ${extern_prefix}
6987 #define BUILDSUF "$build_suffix"
6988 #define SLIBSUF "$SLIBSUF"
6989 #define HAVE_MMX2 HAVE_MMXEXT
6990 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6991 EOF
6992
6993 test -n "$assert_level" &&
6994     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6995
6996 test -n "$malloc_prefix" &&
6997     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6998
6999 if enabled x86asm; then
7000     append config_files $TMPASM
7001     printf '' >$TMPASM
7002 fi
7003
7004 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7005
7006
7007 mkdir -p doc
7008 mkdir -p tests
7009 mkdir -p tests/api
7010 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7011
7012 print_config ARCH_   "$config_files" $ARCH_LIST
7013 print_config HAVE_   "$config_files" $HAVE_LIST
7014 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7015                                      $CONFIG_EXTRA      \
7016                                      $ALL_COMPONENTS    \
7017
7018 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7019 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7020
7021 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7022 cp_if_changed $TMPH config.h
7023 touch ffbuild/.config
7024
7025 enabled x86asm && cp_if_changed $TMPASM config.asm
7026
7027 cat > $TMPH <<EOF
7028 /* Generated by ffconf */
7029 #ifndef AVUTIL_AVCONFIG_H
7030 #define AVUTIL_AVCONFIG_H
7031 EOF
7032
7033 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7034
7035 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7036
7037 cp_if_changed $TMPH libavutil/avconfig.h
7038
7039 # generate the lists of enabled components
7040 print_enabled_components(){
7041     file=$1
7042     struct_name=$2
7043     name=$3
7044     shift 3
7045     echo "static const $struct_name * const $name[] = {" > $TMPH
7046     for c in $*; do
7047         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7048     done
7049     echo "    NULL };" >> $TMPH
7050     cp_if_changed $TMPH $file
7051 }
7052
7053 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7054 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7055
7056 if test -n "$WARNINGS"; then
7057     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7058     enabled fatal_warnings && exit 1
7059 fi
7060
7061 # Settings for pkg-config files
7062
7063 cat > ffbuild/config.sh <<EOF
7064 # Automatically generated by configure - do not modify!
7065 shared=$shared
7066 build_suffix=$build_suffix
7067 prefix=$prefix
7068 libdir=$libdir
7069 incdir=$incdir
7070 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7071 source_path=${source_path}
7072 LIBPREF=${LIBPREF}
7073 LIBSUF=${LIBSUF}
7074 extralibs_avutil="$avutil_extralibs"
7075 extralibs_avcodec="$avcodec_extralibs"
7076 extralibs_avformat="$avformat_extralibs"
7077 extralibs_avdevice="$avdevice_extralibs"
7078 extralibs_avfilter="$avfilter_extralibs"
7079 extralibs_avresample="$avresample_extralibs"
7080 extralibs_postproc="$postproc_extralibs"
7081 extralibs_swscale="$swscale_extralibs"
7082 extralibs_swresample="$swresample_extralibs"
7083 EOF
7084
7085 for lib in $LIBRARY_LIST; do
7086     lib_deps="$(eval echo \$${lib}_deps)"
7087     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7088 done