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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --enable-jni             enable JNI support [no]
 221   --enable-ladspa          enable LADSPA audio filtering [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --disable-lzma           disable lzma [autodetect]
 287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 289   --enable-mediacodec      enable Android MediaCodec support [no]
 290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 291   --enable-openal          enable OpenAL 1.1 capture support [no]
 292   --enable-opencl          enable OpenCL code
 293   --enable-opengl          enable OpenGL rendering [no]
 294   --enable-openssl         enable openssl, needed for https support
 295                            if gnutls is not used [no]
 296   --disable-sndio          disable sndio support [autodetect]
 297   --disable-schannel       disable SChannel SSP, needed for TLS support on
 298                            Windows if openssl and gnutls are not used [autodetect]
 299   --disable-sdl2           disable sdl2 [autodetect]
 300   --disable-securetransport disable Secure Transport, needed for TLS support
 301                            on OSX if openssl and gnutls are not used [autodetect]
 302   --disable-xlib           disable xlib [autodetect]
 303   --disable-zlib           disable zlib [autodetect]
 304
 305   The following libraries provide various hardware acceleration features:
 306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 312   --enable-libdrm          enable DRM code (Linux) [no]
 313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 316   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 317   --enable-omx             enable OpenMAX IL code [no]
 318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 319   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 320   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 321   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 322   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 323
 324 Toolchain options:
 325   --arch=ARCH              select architecture [$arch]
 326   --cpu=CPU                select the minimum required CPU (affects
 327                            instruction selection, may crash on older CPUs)
 328   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 329   --progs-suffix=SUFFIX    program name suffix []
 330   --enable-cross-compile   assume a cross-compiler is used
 331   --sysroot=PATH           root of cross-build tree
 332   --sysinclude=PATH        location of cross-build system headers
 333   --target-os=OS           compiler targets OS [$target_os]
 334   --target-exec=CMD        command to run executables on target
 335   --target-path=DIR        path to view of build directory on target
 336   --target-samples=DIR     path to samples directory on target
 337   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 338   --toolchain=NAME         set tool defaults according to NAME
 339   --nm=NM                  use nm tool NM [$nm_default]
 340   --ar=AR                  use archive tool AR [$ar_default]
 341   --as=AS                  use assembler AS [$as_default]
 342   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 343   --strip=STRIP            use strip tool STRIP [$strip_default]
 344   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 345   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 346   --cc=CC                  use C compiler CC [$cc_default]
 347   --cxx=CXX                use C compiler CXX [$cxx_default]
 348   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 349   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 350   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 351   --ld=LD                  use linker LD [$ld_default]
 352   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 353   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 354   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 355   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 356   --host-cc=HOSTCC         use host C compiler HOSTCC
 357   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 358   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 359   --host-ld=HOSTLD         use host linker HOSTLD
 360   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 361   --host-libs=HLIBS        use libs HLIBS when linking for host
 362   --host-os=OS             compiler host OS [$target_os]
 363   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 364   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 365   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 366   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 367   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 368   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 369   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 370   --extra-version=STRING   version string suffix []
 371   --optflags=OPTFLAGS      override optimization-related compiler flags
 372   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 373   --build-suffix=SUFFIX    library name suffix []
 374   --enable-pic             build position-independent code
 375   --enable-thumb           compile for Thumb instruction set
 376   --enable-lto             use link-time optimization
 377   --env="ENV=override"     override the environment variables
 378
 379 Advanced options (experts only):
 380   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 381   --custom-allocator=NAME  use a supported custom allocator
 382   --disable-symver         disable symbol versioning
 383   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 384   --disable-safe-bitstream-reader
 385                            disable buffer boundary checking in bitreaders
 386                            (faster, but may crash)
 387   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 388
 389 Optimization options (experts only):
 390   --disable-asm            disable all assembly optimizations
 391   --disable-altivec        disable AltiVec optimizations
 392   --disable-vsx            disable VSX optimizations
 393   --disable-power8         disable POWER8 optimizations
 394   --disable-amd3dnow       disable 3DNow! optimizations
 395   --disable-amd3dnowext    disable 3DNow! extended optimizations
 396   --disable-mmx            disable MMX optimizations
 397   --disable-mmxext         disable MMXEXT optimizations
 398   --disable-sse            disable SSE optimizations
 399   --disable-sse2           disable SSE2 optimizations
 400   --disable-sse3           disable SSE3 optimizations
 401   --disable-ssse3          disable SSSE3 optimizations
 402   --disable-sse4           disable SSE4 optimizations
 403   --disable-sse42          disable SSE4.2 optimizations
 404   --disable-avx            disable AVX optimizations
 405   --disable-xop            disable XOP optimizations
 406   --disable-fma3           disable FMA3 optimizations
 407   --disable-fma4           disable FMA4 optimizations
 408   --disable-avx2           disable AVX2 optimizations
 409   --disable-aesni          disable AESNI optimizations
 410   --disable-armv5te        disable armv5te optimizations
 411   --disable-armv6          disable armv6 optimizations
 412   --disable-armv6t2        disable armv6t2 optimizations
 413   --disable-vfp            disable VFP optimizations
 414   --disable-neon           disable NEON optimizations
 415   --disable-inline-asm     disable use of inline assembly
 416   --disable-x86asm         disable use of standalone x86 assembly
 417   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 418   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 419   --disable-msa            disable MSA optimizations
 420   --disable-mipsfpu        disable floating point MIPS optimizations
 421   --disable-mmi            disable Loongson SIMD optimizations
 422   --disable-fast-unaligned consider unaligned accesses slow
 423
 424 Developer options (useful when working on FFmpeg itself):
 425   --disable-debug          disable debugging symbols
 426   --enable-debug=LEVEL     set the debug level [$debuglevel]
 427   --disable-optimizations  disable compiler optimizations
 428   --enable-extra-warnings  enable more compiler warnings
 429   --disable-stripping      disable stripping of executables and shared libraries
 430   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 431                            2 causes a slowdown at runtime.
 432   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 433   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 434                            leaks and errors, using the specified valgrind binary.
 435                            Cannot be combined with --target-exec
 436   --enable-ftrapv          Trap arithmetic overflows
 437   --samples=PATH           location of test samples for FATE, if not set use
 438                            \$FATE_SAMPLES at make invocation time.
 439   --enable-neon-clobber-test check NEON registers for clobbering (should be
 440                            used only for debugging purposes)
 441   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 442                            should be used only for debugging purposes)
 443   --enable-random          randomly enable/disable components
 444   --disable-random
 445   --enable-random=LIST     randomly enable/disable specific components or
 446   --disable-random=LIST    component groups. LIST is a comma-separated list
 447                            of NAME[:PROB] entries where NAME is a component
 448                            (group) and PROB the probability associated with
 449                            NAME (default 0.5).
 450   --random-seed=VALUE      seed value for --enable/disable-random
 451   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 452                            (only applies to --disable-optimizations builds)
 453   --enable-osfuzz          Enable building fuzzer tool
 454   --libfuzzer=PATH         path to libfuzzer
 455   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 456                            in the name) of tests whose result is ignored
 457   --enable-linux-perf      enable Linux Performance Monitor API
 458
 459 NOTE: Object files are built at the place where configure is launched.
 460 EOF
 461   exit 0
 462 }
 463
 464 quotes='""'
 465 if test -t 1 && which tput >/dev/null 2>&1; then
 466     ncolors=$(tput colors)
 467     if test -n "$ncolors" && test $ncolors -ge 8; then
 468         bold_color=$(tput bold)
 469         warn_color=$(tput setaf 3)
 470         error_color=$(tput setaf 1)
 471         reset_color=$(tput sgr0)
 472     fi
 473     # 72 used instead of 80 since that's the default of pr
 474     ncols=$(tput cols)
 475 fi
 476 : ${ncols:=72}
 477
 478 log(){
 479     echo "$@" >> $logfile
 480 }
 481
 482 log_file(){
 483     log BEGIN $1
 484     pr -n -t $1 >> $logfile
 485     log END $1
 486 }
 487
 488 warn(){
 489     log "WARNING: $*"
 490     WARNINGS="${WARNINGS}WARNING: $*\n"
 491 }
 492
 493 die(){
 494     log "$@"
 495     echo "$error_color$bold_color$@$reset_color"
 496     cat <<EOF
 497
 498 If you think configure made a mistake, make sure you are using the latest
 499 version from Git.  If the latest version fails, report the problem to the
 500 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 501 EOF
 502     if disabled logging; then
 503         cat <<EOF
 504 Rerun configure with logging enabled (do not use --disable-logging), and
 505 include the log this produces with your report.
 506 EOF
 507     else
 508         cat <<EOF
 509 Include the log file "$logfile" produced by configure as this will help
 510 solve the problem.
 511 EOF
 512     fi
 513     exit 1
 514 }
 515
 516 # Avoid locale weirdness, besides we really just want to translate ASCII.
 517 toupper(){
 518     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 519 }
 520
 521 tolower(){
 522     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 523 }
 524
 525 c_escape(){
 526     echo "$*" | sed 's/["\\]/\\\0/g'
 527 }
 528
 529 sh_quote(){
 530     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 531     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 532     echo "$v"
 533 }
 534
 535 cleanws(){
 536     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 537 }
 538
 539 filter(){
 540     pat=$1
 541     shift
 542     for v; do
 543         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 544     done
 545 }
 546
 547 filter_out(){
 548     pat=$1
 549     shift
 550     for v; do
 551         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 552     done
 553 }
 554
 555 map(){
 556     m=$1
 557     shift
 558     for v; do eval $m; done
 559 }
 560
 561 add_suffix(){
 562     suffix=$1
 563     shift
 564     for v; do echo ${v}${suffix}; done
 565 }
 566
 567 set_all(){
 568     value=$1
 569     shift
 570     for var in $*; do
 571         eval $var=$value
 572     done
 573 }
 574
 575 set_weak(){
 576     value=$1
 577     shift
 578     for var; do
 579         eval : \${$var:=$value}
 580     done
 581 }
 582
 583 sanitize_var_name(){
 584     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 585 }
 586
 587 set_sanitized(){
 588     var=$1
 589     shift
 590     eval $(sanitize_var_name "$var")='$*'
 591 }
 592
 593 get_sanitized(){
 594     eval echo \$$(sanitize_var_name "$1")
 595 }
 596
 597 pushvar(){
 598     for pvar in $*; do
 599         eval level=\${${pvar}_level:=0}
 600         eval ${pvar}_${level}="\$$pvar"
 601         eval ${pvar}_level=$(($level+1))
 602     done
 603 }
 604
 605 popvar(){
 606     for pvar in $*; do
 607         eval level=\${${pvar}_level:-0}
 608         test $level = 0 && continue
 609         eval level=$(($level-1))
 610         eval $pvar="\${${pvar}_${level}}"
 611         eval ${pvar}_level=$level
 612         eval unset ${pvar}_${level}
 613     done
 614 }
 615
 616 request(){
 617     for var in $*; do
 618         eval ${var}_requested=yes
 619         eval $var=
 620     done
 621 }
 622
 623 enable(){
 624     set_all yes $*
 625 }
 626
 627 disable(){
 628     set_all no $*
 629 }
 630
 631 enable_weak(){
 632     set_weak yes $*
 633 }
 634
 635 disable_weak(){
 636     set_weak no $*
 637 }
 638
 639 enable_sanitized(){
 640     for var; do
 641         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 642     done
 643 }
 644
 645 disable_sanitized(){
 646     for var; do
 647         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 648     done
 649 }
 650
 651 do_enable_deep(){
 652     for var; do
 653         enabled $var && continue
 654         eval sel="\$${var}_select"
 655         eval sgs="\$${var}_suggest"
 656         pushvar var sgs
 657         enable_deep $sel
 658         popvar sgs
 659         enable_deep_weak $sgs
 660         popvar var
 661     done
 662 }
 663
 664 enable_deep(){
 665     do_enable_deep $*
 666     enable $*
 667 }
 668
 669 enable_deep_weak(){
 670     for var; do
 671         disabled $var && continue
 672         pushvar var
 673         do_enable_deep $var
 674         popvar var
 675         enable_weak $var
 676     done
 677 }
 678
 679 requested(){
 680     test "${1#!}" = "$1" && op='=' || op=!=
 681     eval test "x\$${1#!}_requested" $op "xyes"
 682 }
 683
 684 enabled(){
 685     test "${1#!}" = "$1" && op='=' || op=!=
 686     eval test "x\$${1#!}" $op "xyes"
 687 }
 688
 689 disabled(){
 690     test "${1#!}" = "$1" && op='=' || op=!=
 691     eval test "x\$${1#!}" $op "xno"
 692 }
 693
 694 enabled_all(){
 695     for opt; do
 696         enabled $opt || return 1
 697     done
 698 }
 699
 700 disabled_all(){
 701     for opt; do
 702         disabled $opt || return 1
 703     done
 704 }
 705
 706 enabled_any(){
 707     for opt; do
 708         enabled $opt && return 0
 709     done
 710 }
 711
 712 disabled_any(){
 713     for opt; do
 714         disabled $opt && return 0
 715     done
 716     return 1
 717 }
 718
 719 set_default(){
 720     for opt; do
 721         eval : \${$opt:=\$${opt}_default}
 722     done
 723 }
 724
 725 is_in(){
 726     value=$1
 727     shift
 728     for var in $*; do
 729         [ $var = $value ] && return 0
 730     done
 731     return 1
 732 }
 733
 734 check_deps(){
 735     for cfg; do
 736         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 737         disabled ${cfg}_checking && continue
 738         enable ${cfg}_checking
 739
 740         eval dep_all="\$${cfg}_deps"
 741         eval dep_any="\$${cfg}_deps_any"
 742         eval dep_con="\$${cfg}_conflict"
 743         eval dep_sel="\$${cfg}_select"
 744         eval dep_sgs="\$${cfg}_suggest"
 745         eval dep_ifa="\$${cfg}_if"
 746         eval dep_ifn="\$${cfg}_if_any"
 747
 748         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 749         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 750         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 751
 752         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 753         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 754         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 755         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 756         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 757         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 758
 759         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 760
 761         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 762             # filter out library deps, these do not belong in extralibs
 763             is_in $dep $LIBRARY_LIST && continue
 764             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 765         done
 766
 767         disable ${cfg}_checking
 768     done
 769 }
 770
 771 print_config(){
 772     pfx=$1
 773     files=$2
 774     shift 2
 775     map 'eval echo "$v \${$v:-no}"' "$@" |
 776     awk "BEGIN { split(\"$files\", files) }
 777         {
 778             c = \"$pfx\" toupper(\$1);
 779             v = \$2;
 780             sub(/yes/, 1, v);
 781             sub(/no/,  0, v);
 782             for (f in files) {
 783                 file = files[f];
 784                 if (file ~ /\\.h\$/) {
 785                     printf(\"#define %s %d\\n\", c, v) >>file;
 786                 } else if (file ~ /\\.asm\$/) {
 787                     printf(\"%%define %s %d\\n\", c, v) >>file;
 788                 } else if (file ~ /\\.mak\$/) {
 789                     n = -v ? \"\" : \"!\";
 790                     printf(\"%s%s=yes\\n\", n, c) >>file;
 791                 } else if (file ~ /\\.texi\$/) {
 792                     pre = -v ? \"\" : \"@c \";
 793                     yesno = \$2;
 794                     c2 = tolower(c);
 795                     gsub(/_/, \"-\", c2);
 796                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 797                 }
 798             }
 799         }"
 800 }
 801
 802 print_enabled(){
 803     suf=$1
 804     shift
 805     for v; do
 806         enabled $v && printf "%s\n" ${v%$suf}
 807     done
 808 }
 809
 810 append(){
 811     var=$1
 812     shift
 813     eval "$var=\"\$$var $*\""
 814 }
 815
 816 prepend(){
 817     var=$1
 818     shift
 819     eval "$var=\"$* \$$var\""
 820 }
 821
 822 unique(){
 823     var=$1
 824     uniq_list=""
 825     for tok in $(eval echo \$$var); do
 826         uniq_list="$(filter_out $tok $uniq_list) $tok"
 827     done
 828     eval "$var=\"${uniq_list}\""
 829 }
 830
 831 resolve(){
 832     var=$1
 833     tmpvar=
 834     for entry in $(eval echo \$$var); do
 835         tmpvar="$tmpvar $(eval echo \$${entry})"
 836     done
 837     eval "$var=\"${tmpvar}\""
 838 }
 839
 840 add_cppflags(){
 841     append CPPFLAGS "$@"
 842 }
 843
 844 add_cflags(){
 845     append CFLAGS $($cflags_filter "$@")
 846 }
 847
 848 add_cflags_headers(){
 849     append CFLAGS_HEADERS $($cflags_filter "$@")
 850 }
 851
 852 add_cxxflags(){
 853     append CXXFLAGS $($cflags_filter "$@")
 854 }
 855
 856 add_asflags(){
 857     append ASFLAGS $($asflags_filter "$@")
 858 }
 859
 860 add_objcflags(){
 861     append OBJCFLAGS $($objcflags_filter "$@")
 862 }
 863
 864 add_ldflags(){
 865     append LDFLAGS $($ldflags_filter "$@")
 866 }
 867
 868 add_ldexeflags(){
 869     append LDEXEFLAGS $($ldflags_filter "$@")
 870 }
 871
 872 add_ldlibflags(){
 873     append LDLIBFLAGS $($ldflags_filter "$@")
 874 }
 875
 876 add_stripflags(){
 877     append ASMSTRIPFLAGS "$@"
 878 }
 879
 880 add_extralibs(){
 881     prepend extralibs $($ldflags_filter "$@")
 882 }
 883
 884 add_host_cppflags(){
 885     append host_cppflags "$@"
 886 }
 887
 888 add_host_cflags(){
 889     append host_cflags $($host_cflags_filter "$@")
 890 }
 891
 892 add_host_ldflags(){
 893     append host_ldflags $($host_ldflags_filter "$@")
 894 }
 895
 896 add_compat(){
 897     append compat_objs $1
 898     shift
 899     map 'add_cppflags -D$v' "$@"
 900 }
 901
 902 check_cmd(){
 903     log "$@"
 904     "$@" >> $logfile 2>&1
 905 }
 906
 907 check_stat(){
 908     log check_stat "$@"
 909     stat "$1" >> $logfile 2>&1
 910 }
 911
 912 cc_o(){
 913     eval printf '%s\\n' $CC_O
 914 }
 915
 916 cc_e(){
 917     eval printf '%s\\n' $CC_E
 918 }
 919
 920 check_cc(){
 921     log check_cc "$@"
 922     cat > $TMPC
 923     log_file $TMPC
 924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 925 }
 926
 927 check_cxx(){
 928     log check_cxx "$@"
 929     cat > $TMPCPP
 930     log_file $TMPCPP
 931     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 932 }
 933
 934 check_objcc(){
 935     log check_objcc "$@"
 936     cat > $TMPM
 937     log_file $TMPM
 938     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 939 }
 940
 941 check_cpp(){
 942     log check_cpp "$@"
 943     cat > $TMPC
 944     log_file $TMPC
 945     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 946 }
 947
 948 as_o(){
 949     eval printf '%s\\n' $AS_O
 950 }
 951
 952 check_as(){
 953     log check_as "$@"
 954     cat > $TMPS
 955     log_file $TMPS
 956     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 957 }
 958
 959 check_inline_asm(){
 960     log check_inline_asm "$@"
 961     name="$1"
 962     code="$2"
 963     shift 2
 964     disable $name
 965     check_cc "$@" <<EOF && enable $name
 966 void foo(void){ __asm__ volatile($code); }
 967 EOF
 968 }
 969
 970 check_inline_asm_flags(){
 971     log check_inline_asm_flags "$@"
 972     name="$1"
 973     code="$2"
 974     flags=''
 975     shift 2
 976     while [ "$1" != "" ]; do
 977       append flags $1
 978       shift
 979     done;
 980     disable $name
 981     cat > $TMPC <<EOF
 982 void foo(void){ __asm__ volatile($code); }
 983 EOF
 984     log_file $TMPC
 985     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 986     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 987 }
 988
 989 check_insn(){
 990     log check_insn "$@"
 991     check_inline_asm ${1}_inline "\"$2\""
 992     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 993 }
 994
 995 check_x86asm(){
 996     log check_x86asm "$@"
 997     echo "$1" > $TMPS
 998     log_file $TMPS
 999     shift 1
1000     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 check_ld(){
1008     log check_ld "$@"
1009     type=$1
1010     shift 1
1011     flags=$(filter_out '-l*|*.so' $@)
1012     libs=$(filter '-l*|*.so' $@)
1013     check_$type $($cflags_filter $flags) || return
1014     flags=$($ldflags_filter $flags)
1015     libs=$($ldflags_filter $libs)
1016     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1017 }
1018
1019 print_include(){
1020     hdr=$1
1021     test "${hdr%.h}" = "${hdr}" &&
1022         echo "#include $hdr"    ||
1023         echo "#include <$hdr>"
1024 }
1025
1026 check_code(){
1027     log check_code "$@"
1028     check=$1
1029     headers=$2
1030     code=$3
1031     shift 3
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         echo "int main(void) { $code; return 0; }"
1037     } | check_$check "$@"
1038 }
1039
1040 check_cppflags(){
1041     log check_cppflags "$@"
1042     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1043 #include <stdlib.h>
1044 EOF
1045 }
1046
1047 test_cflags(){
1048     log test_cflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_cflags(){
1056     log check_cflags "$@"
1057     test_cflags "$@" && add_cflags "$@"
1058 }
1059
1060 check_cxxflags(){
1061     log check_cxxflags "$@"
1062     set -- $($cflags_filter "$@")
1063     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1064 int x;
1065 EOF
1066 }
1067
1068 test_objcflags(){
1069     log test_objcflags "$@"
1070     set -- $($objcflags_filter "$@")
1071     check_objcc "$@" <<EOF
1072 int x;
1073 EOF
1074 }
1075
1076 check_objcflags(){
1077     log check_objcflags "$@"
1078     test_objcflags "$@" && add_objcflags "$@"
1079 }
1080
1081 test_ldflags(){
1082     log test_ldflags "$@"
1083     check_ld "cc" "$@" <<EOF
1084 int main(void){ return 0; }
1085 EOF
1086 }
1087
1088 check_ldflags(){
1089     log check_ldflags "$@"
1090     test_ldflags "$@" && add_ldflags "$@"
1091 }
1092
1093 test_stripflags(){
1094     log test_stripflags "$@"
1095     # call check_cc to get a fresh TMPO
1096     check_cc <<EOF
1097 int main(void) { return 0; }
1098 EOF
1099     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1100 }
1101
1102 check_stripflags(){
1103     log check_stripflags "$@"
1104     test_stripflags "$@" && add_stripflags "$@"
1105 }
1106
1107 check_header(){
1108     log check_header "$@"
1109     header=$1
1110     shift
1111     disable_sanitized $header
1112     check_cpp "$@" <<EOF && enable_sanitized $header
1113 #include <$header>
1114 int x;
1115 EOF
1116 }
1117
1118 check_header_objcc(){
1119     log check_header_objcc "$@"
1120     rm -f -- "$TMPO"
1121     header=$1
1122     shift
1123     disable_sanitized $header
1124     {
1125        echo "#include <$header>"
1126        echo "int main(void) { return 0; }"
1127     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1128 }
1129
1130 check_apple_framework(){
1131     log check_apple_framework "$@"
1132     framework="$1"
1133     name="$(tolower $framework)"
1134     header="${framework}/${framework}.h"
1135     disable $name
1136     check_header_objcc $header &&
1137         enable $name && eval ${name}_extralibs='"-framework $framework"'
1138 }
1139
1140 check_func(){
1141     log check_func "$@"
1142     func=$1
1143     shift
1144     disable $func
1145     check_ld "cc" "$@" <<EOF && enable $func
1146 extern int $func();
1147 int main(void){ $func(); }
1148 EOF
1149 }
1150
1151 check_complexfunc(){
1152     log check_complexfunc "$@"
1153     func=$1
1154     narg=$2
1155     shift 2
1156     test $narg = 2 && args="f, g" || args="f * I"
1157     disable $func
1158     check_ld "cc" "$@" <<EOF && enable $func
1159 #include <complex.h>
1160 #include <math.h>
1161 float foo(complex float f, complex float g) { return $func($args); }
1162 int main(void){ return (int) foo; }
1163 EOF
1164 }
1165
1166 check_mathfunc(){
1167     log check_mathfunc "$@"
1168     func=$1
1169     narg=$2
1170     shift 2
1171     test $narg = 2 && args="f, g" || args="f"
1172     disable $func
1173     check_ld "cc" "$@" <<EOF && enable $func
1174 #include <math.h>
1175 float foo(float f, float g) { return $func($args); }
1176 int main(void){ return (int) foo; }
1177 EOF
1178 }
1179
1180 check_func_headers(){
1181     log check_func_headers "$@"
1182     headers=$1
1183     funcs=$2
1184     shift 2
1185     {
1186         for hdr in $headers; do
1187             print_include $hdr
1188         done
1189         echo "#include <stdint.h>"
1190         for func in $funcs; do
1191             echo "long check_$func(void) { return (long) $func; }"
1192         done
1193         echo "int main(void) { int ret = 0;"
1194         # LTO could optimize out the test functions without this
1195         for func in $funcs; do
1196             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1197         done
1198         echo "return ret; }"
1199     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1200 }
1201
1202 check_class_headers_cpp(){
1203     log check_class_headers_cpp "$@"
1204     headers=$1
1205     classes=$2
1206     shift 2
1207     {
1208         for hdr in $headers; do
1209             echo "#include <$hdr>"
1210         done
1211         echo "int main(void) { "
1212         i=1
1213         for class in $classes; do
1214             echo "$class obj$i;"
1215             i=$(expr $i + 1)
1216         done
1217         echo "return 0; }"
1218     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1219 }
1220
1221 check_cpp_condition(){
1222     log check_cpp_condition "$@"
1223     header=$1
1224     condition=$2
1225     shift 2
1226     check_cpp "$@" <<EOF
1227 #include <$header>
1228 #if !($condition)
1229 #error "unsatisfied condition: $condition"
1230 #endif
1231 EOF
1232 }
1233
1234 test_cflags_cc(){
1235     log test_cflags_cc "$@"
1236     flags=$1
1237     header=$2
1238     condition=$3
1239     shift 3
1240     set -- $($cflags_filter "$flags")
1241     check_cc "$@" <<EOF
1242 #include <$header>
1243 #if !($condition)
1244 #error "unsatisfied condition: $condition"
1245 #endif
1246 EOF
1247 }
1248
1249 check_lib(){
1250     log check_lib "$@"
1251     name="$1"
1252     headers="$2"
1253     funcs="$3"
1254     shift 3
1255     disable $name
1256     check_func_headers "$headers" "$funcs" "$@" &&
1257         enable $name && eval ${name}_extralibs="\$@"
1258 }
1259
1260 check_lib_cpp(){
1261     log check_lib_cpp "$@"
1262     name="$1"
1263     headers="$2"
1264     classes="$3"
1265     shift 3
1266     disable $name
1267     check_class_headers_cpp "$headers" "$classes" "$@" &&
1268         enable $name && eval ${name}_extralibs="\$@"
1269 }
1270
1271 check_pkg_config(){
1272     log check_pkg_config "$@"
1273     name="$1"
1274     pkg_version="$2"
1275     pkg="${2%% *}"
1276     headers="$3"
1277     funcs="$4"
1278     shift 4
1279     disable $name
1280     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1281     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1282     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1283     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1284         enable $name &&
1285         set_sanitized "${name}_cflags"    $pkg_cflags &&
1286         set_sanitized "${name}_extralibs" $pkg_libs
1287 }
1288
1289 check_exec(){
1290     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1291 }
1292
1293 check_exec_crash(){
1294     log check_exec_crash "$@"
1295     code=$(cat)
1296
1297     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1298     # are safe but may not be available everywhere.  Thus we use
1299     # raise(SIGTERM) instead.  The check is run in a subshell so we
1300     # can redirect the "Terminated" message from the shell.  SIGBUS
1301     # is not defined by standard C so it is used conditionally.
1302
1303     (check_exec "$@") >> $logfile 2>&1 <<EOF
1304 #include <signal.h>
1305 static void sighandler(int sig){
1306     raise(SIGTERM);
1307 }
1308 int foo(void){
1309     $code
1310 }
1311 int (*func_ptr)(void) = foo;
1312 int main(void){
1313     signal(SIGILL, sighandler);
1314     signal(SIGFPE, sighandler);
1315     signal(SIGSEGV, sighandler);
1316 #ifdef SIGBUS
1317     signal(SIGBUS, sighandler);
1318 #endif
1319     return func_ptr();
1320 }
1321 EOF
1322 }
1323
1324 check_type(){
1325     log check_type "$@"
1326     headers=$1
1327     type=$2
1328     shift 2
1329     disable_sanitized "$type"
1330     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1331 }
1332
1333 check_struct(){
1334     log check_struct "$@"
1335     headers=$1
1336     struct=$2
1337     member=$3
1338     shift 3
1339     disable_sanitized "${struct}_${member}"
1340     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1341         enable_sanitized "${struct}_${member}"
1342 }
1343
1344 check_builtin(){
1345     log check_builtin "$@"
1346     name=$1
1347     headers=$2
1348     builtin=$3
1349     shift 3
1350     disable "$name"
1351     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1352 }
1353
1354 check_compile_assert(){
1355     log check_compile_assert "$@"
1356     name=$1
1357     headers=$2
1358     condition=$3
1359     shift 3
1360     disable "$name"
1361     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1362 }
1363
1364 require(){
1365     log require "$@"
1366     name_version="$1"
1367     name="${1%% *}"
1368     headers="$2"
1369     func="$3"
1370     shift 3
1371     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1372 }
1373
1374 require_cpp(){
1375     name="$1"
1376     headers="$2"
1377     classes="$3"
1378     shift 3
1379     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1380 }
1381
1382 require_header(){
1383     log require "$@"
1384     header="$1"
1385     shift
1386     check_header "$header" "$@" || die "ERROR: $header header not found"
1387 }
1388
1389 require_cpp_condition(){
1390     log require "$@"
1391     header="$1"
1392     condition="$2"
1393     shift 2
1394     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1395 }
1396
1397 use_pkg_config(){
1398     log use_pkg_config "$@"
1399     name="$1"
1400     check_pkg_config "$@" || return 1
1401     add_cflags    $(get_sanitized "${name}_cflags")
1402 }
1403
1404 require_pkg_config(){
1405     log require_pkg_config "$@"
1406     pkg_version="$2"
1407     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1408 }
1409
1410 hostcc_e(){
1411     eval printf '%s\\n' $HOSTCC_E
1412 }
1413
1414 hostcc_o(){
1415     eval printf '%s\\n' $HOSTCC_O
1416 }
1417
1418 check_host_cc(){
1419     log check_host_cc "$@"
1420     cat > $TMPC
1421     log_file $TMPC
1422     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1423 }
1424
1425 check_host_cpp(){
1426     log check_host_cpp "$@"
1427     cat > $TMPC
1428     log_file $TMPC
1429     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1430 }
1431
1432 check_host_cppflags(){
1433     log check_host_cppflags "$@"
1434     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1435 #include <stdlib.h>
1436 EOF
1437 }
1438
1439 check_host_cflags(){
1440     log check_host_cflags "$@"
1441     set -- $($host_cflags_filter "$@")
1442     check_host_cc "$@" <<EOF && append host_cflags "$@"
1443 int x;
1444 EOF
1445 }
1446
1447 check_host_cpp_condition(){
1448     log check_host_cpp_condition "$@"
1449     header=$1
1450     condition=$2
1451     shift 2
1452     check_host_cpp "$@" <<EOF
1453 #include <$header>
1454 #if !($condition)
1455 #error "unsatisfied condition: $condition"
1456 #endif
1457 EOF
1458 }
1459
1460 cp_if_changed(){
1461     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1462     mkdir -p "$(dirname $2)"
1463     cp -f "$1" "$2"
1464 }
1465
1466 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1467 # system-dependent things.
1468
1469 AVCODEC_COMPONENTS="
1470     bsfs
1471     decoders
1472     encoders
1473     hwaccels
1474     parsers
1475 "
1476
1477 AVDEVICE_COMPONENTS="
1478     indevs
1479     outdevs
1480 "
1481
1482 AVFILTER_COMPONENTS="
1483     filters
1484 "
1485
1486 AVFORMAT_COMPONENTS="
1487     demuxers
1488     muxers
1489     protocols
1490 "
1491
1492 AVRESAMPLE_COMPONENTS=""
1493
1494 AVUTIL_COMPONENTS=""
1495
1496 COMPONENT_LIST="
1497     $AVCODEC_COMPONENTS
1498     $AVDEVICE_COMPONENTS
1499     $AVFILTER_COMPONENTS
1500     $AVFORMAT_COMPONENTS
1501     $AVRESAMPLE_COMPONENTS
1502     $AVUTIL_COMPONENTS
1503 "
1504
1505 EXAMPLE_LIST="
1506     avio_dir_cmd_example
1507     avio_reading_example
1508     decode_audio_example
1509     decode_video_example
1510     demuxing_decoding_example
1511     encode_audio_example
1512     encode_video_example
1513     extract_mvs_example
1514     filter_audio_example
1515     filtering_audio_example
1516     filtering_video_example
1517     http_multiclient_example
1518     hw_decode_example
1519     metadata_example
1520     muxing_example
1521     qsvdec_example
1522     remuxing_example
1523     resampling_audio_example
1524     scaling_video_example
1525     transcode_aac_example
1526     transcoding_example
1527 "
1528
1529 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1530     alsa
1531     appkit
1532     avfoundation
1533     bzlib
1534     coreimage
1535     iconv
1536     libxcb
1537     libxcb_shm
1538     libxcb_shape
1539     libxcb_xfixes
1540     lzma
1541     schannel
1542     sdl2
1543     securetransport
1544     sndio
1545     xlib
1546     zlib
1547 "
1548
1549 EXTERNAL_LIBRARY_GPL_LIST="
1550     avisynth
1551     frei0r
1552     libcdio
1553     librubberband
1554     libvidstab
1555     libx264
1556     libx265
1557     libxavs
1558     libxvid
1559 "
1560
1561 EXTERNAL_LIBRARY_NONFREE_LIST="
1562     decklink
1563     libndi_newtek
1564     libfdk_aac
1565     openssl
1566 "
1567
1568 EXTERNAL_LIBRARY_VERSION3_LIST="
1569     gmp
1570     libopencore_amrnb
1571     libopencore_amrwb
1572     libvo_amrwbenc
1573     rkmpp
1574 "
1575
1576 EXTERNAL_LIBRARY_GPLV3_LIST="
1577     libsmbclient
1578 "
1579
1580 EXTERNAL_LIBRARY_LIST="
1581     $EXTERNAL_LIBRARY_GPL_LIST
1582     $EXTERNAL_LIBRARY_NONFREE_LIST
1583     $EXTERNAL_LIBRARY_VERSION3_LIST
1584     $EXTERNAL_LIBRARY_GPLV3_LIST
1585     chromaprint
1586     gcrypt
1587     gnutls
1588     jni
1589     ladspa
1590     libass
1591     libbluray
1592     libbs2b
1593     libcaca
1594     libcelt
1595     libdc1394
1596     libdrm
1597     libflite
1598     libfontconfig
1599     libfreetype
1600     libfribidi
1601     libgme
1602     libgsm
1603     libiec61883
1604     libilbc
1605     libjack
1606     libkvazaar
1607     libmodplug
1608     libmp3lame
1609     libmysofa
1610     libopencv
1611     libopenh264
1612     libopenjpeg
1613     libopenmpt
1614     libopus
1615     libpulse
1616     librsvg
1617     librtmp
1618     libshine
1619     libsmbclient
1620     libsnappy
1621     libsoxr
1622     libspeex
1623     libssh
1624     libtesseract
1625     libtheora
1626     libtwolame
1627     libv4l2
1628     libvmaf
1629     libvorbis
1630     libvpx
1631     libwavpack
1632     libwebp
1633     libxml2
1634     libzimg
1635     libzmq
1636     libzvbi
1637     mediacodec
1638     openal
1639     opencl
1640     opengl
1641 "
1642
1643 HWACCEL_AUTODETECT_LIBRARY_LIST="
1644     audiotoolbox
1645     crystalhd
1646     cuda
1647     cuvid
1648     d3d11va
1649     dxva2
1650     nvenc
1651     vaapi
1652     vdpau
1653     videotoolbox
1654     v4l2_m2m
1655     xvmc
1656 "
1657
1658 # catchall list of things that require external libs to link
1659 EXTRALIBS_LIST="
1660     cpu_init
1661     cws2fws
1662 "
1663
1664 HWACCEL_LIBRARY_NONFREE_LIST="
1665     cuda_sdk
1666     libnpp
1667 "
1668
1669 HWACCEL_LIBRARY_LIST="
1670     $HWACCEL_LIBRARY_NONFREE_LIST
1671     libmfx
1672     mmal
1673     omx
1674 "
1675
1676 DOCUMENT_LIST="
1677     doc
1678     htmlpages
1679     manpages
1680     podpages
1681     txtpages
1682 "
1683
1684 FEATURE_LIST="
1685     ftrapv
1686     gray
1687     hardcoded_tables
1688     omx_rpi
1689     runtime_cpudetect
1690     safe_bitstream_reader
1691     shared
1692     small
1693     static
1694     swscale_alpha
1695 "
1696
1697 LIBRARY_LIST="
1698     avcodec
1699     avdevice
1700     avfilter
1701     avformat
1702     avresample
1703     avutil
1704     postproc
1705     swresample
1706     swscale
1707 "
1708
1709 LICENSE_LIST="
1710     gpl
1711     nonfree
1712     version3
1713 "
1714
1715 PROGRAM_LIST="
1716     ffplay
1717     ffprobe
1718     ffserver
1719     ffmpeg
1720 "
1721
1722 SUBSYSTEM_LIST="
1723     dct
1724     dwt
1725     error_resilience
1726     faan
1727     fast_unaligned
1728     fft
1729     lsp
1730     lzo
1731     mdct
1732     pixelutils
1733     network
1734     rdft
1735 "
1736
1737 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1738 CONFIG_LIST="
1739     $DOCUMENT_LIST
1740     $EXAMPLE_LIST
1741     $EXTERNAL_LIBRARY_LIST
1742     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1743     $HWACCEL_LIBRARY_LIST
1744     $HWACCEL_AUTODETECT_LIBRARY_LIST
1745     $FEATURE_LIST
1746     $LICENSE_LIST
1747     $LIBRARY_LIST
1748     $PROGRAM_LIST
1749     $SUBSYSTEM_LIST
1750     autodetect
1751     fontconfig
1752     linux_perf
1753     memory_poisoning
1754     neon_clobber_test
1755     ossfuzz
1756     pic
1757     thumb
1758     valgrind_backtrace
1759     xmm_clobber_test
1760     $COMPONENT_LIST
1761 "
1762
1763 THREADS_LIST="
1764     pthreads
1765     os2threads
1766     w32threads
1767 "
1768
1769 ATOMICS_LIST="
1770     atomics_gcc
1771     atomics_suncc
1772     atomics_win32
1773 "
1774
1775 AUTODETECT_LIBS="
1776     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1777     $HWACCEL_AUTODETECT_LIBRARY_LIST
1778     $THREADS_LIST
1779 "
1780
1781 ARCH_LIST="
1782     aarch64
1783     alpha
1784     arm
1785     avr32
1786     avr32_ap
1787     avr32_uc
1788     bfin
1789     ia64
1790     m68k
1791     mips
1792     mips64
1793     parisc
1794     ppc
1795     ppc64
1796     s390
1797     sh4
1798     sparc
1799     sparc64
1800     tilegx
1801     tilepro
1802     tomi
1803     x86
1804     x86_32
1805     x86_64
1806 "
1807
1808 ARCH_EXT_LIST_ARM="
1809     armv5te
1810     armv6
1811     armv6t2
1812     armv8
1813     neon
1814     vfp
1815     vfpv3
1816     setend
1817 "
1818
1819 ARCH_EXT_LIST_MIPS="
1820     mipsfpu
1821     mips32r2
1822     mips32r5
1823     mips64r2
1824     mips32r6
1825     mips64r6
1826     mipsdsp
1827     mipsdspr2
1828     msa
1829 "
1830
1831 ARCH_EXT_LIST_LOONGSON="
1832     loongson2
1833     loongson3
1834     mmi
1835 "
1836
1837 ARCH_EXT_LIST_X86_SIMD="
1838     aesni
1839     amd3dnow
1840     amd3dnowext
1841     avx
1842     avx2
1843     fma3
1844     fma4
1845     mmx
1846     mmxext
1847     sse
1848     sse2
1849     sse3
1850     sse4
1851     sse42
1852     ssse3
1853     xop
1854 "
1855
1856 ARCH_EXT_LIST_PPC="
1857     altivec
1858     dcbzl
1859     ldbrx
1860     power8
1861     ppc4xx
1862     vsx
1863 "
1864
1865 ARCH_EXT_LIST_X86="
1866     $ARCH_EXT_LIST_X86_SIMD
1867     cpunop
1868     i686
1869 "
1870
1871 ARCH_EXT_LIST="
1872     $ARCH_EXT_LIST_ARM
1873     $ARCH_EXT_LIST_PPC
1874     $ARCH_EXT_LIST_X86
1875     $ARCH_EXT_LIST_MIPS
1876     $ARCH_EXT_LIST_LOONGSON
1877 "
1878
1879 ARCH_FEATURES="
1880     aligned_stack
1881     fast_64bit
1882     fast_clz
1883     fast_cmov
1884     local_aligned
1885     simd_align_16
1886     simd_align_32
1887 "
1888
1889 BUILTIN_LIST="
1890     atomic_cas_ptr
1891     machine_rw_barrier
1892     MemoryBarrier
1893     mm_empty
1894     rdtsc
1895     sarestart
1896     sem_timedwait
1897     sync_val_compare_and_swap
1898 "
1899 HAVE_LIST_CMDLINE="
1900     inline_asm
1901     symver
1902     x86asm
1903 "
1904
1905 HAVE_LIST_PUB="
1906     bigendian
1907     fast_unaligned
1908 "
1909
1910 HEADERS_LIST="
1911     altivec_h
1912     arpa_inet_h
1913     asm_types_h
1914     cdio_paranoia_h
1915     cdio_paranoia_paranoia_h
1916     cuda_h
1917     d3d11_h
1918     dispatch_dispatch_h
1919     dev_bktr_ioctl_bt848_h
1920     dev_bktr_ioctl_meteor_h
1921     dev_ic_bt8xx_h
1922     dev_video_bktr_ioctl_bt848_h
1923     dev_video_meteor_ioctl_meteor_h
1924     direct_h
1925     dirent_h
1926     dlfcn_h
1927     dxgidebug_h
1928     dxva_h
1929     ES2_gl_h
1930     gsm_h
1931     io_h
1932     mach_mach_time_h
1933     machine_ioctl_bt848_h
1934     machine_ioctl_meteor_h
1935     malloc_h
1936     opencv2_core_core_c_h
1937     OpenGL_gl3_h
1938     poll_h
1939     soundcard_h
1940     stdatomic_h
1941     sys_mman_h
1942     sys_param_h
1943     sys_resource_h
1944     sys_select_h
1945     sys_soundcard_h
1946     sys_time_h
1947     sys_un_h
1948     sys_videoio_h
1949     termios_h
1950     udplite_h
1951     unistd_h
1952     valgrind_valgrind_h
1953     windows_h
1954     winsock2_h
1955 "
1956
1957 INTRINSICS_LIST="
1958     intrinsics_neon
1959 "
1960
1961 COMPLEX_FUNCS="
1962     cabs
1963     cexp
1964 "
1965
1966 MATH_FUNCS="
1967     atanf
1968     atan2f
1969     cbrt
1970     cbrtf
1971     copysign
1972     cosf
1973     erf
1974     exp2
1975     exp2f
1976     expf
1977     hypot
1978     isfinite
1979     isinf
1980     isnan
1981     ldexpf
1982     llrint
1983     llrintf
1984     log2
1985     log2f
1986     log10f
1987     lrint
1988     lrintf
1989     powf
1990     rint
1991     round
1992     roundf
1993     sinf
1994     trunc
1995     truncf
1996 "
1997
1998 SYSTEM_FUNCS="
1999     access
2000     aligned_malloc
2001     arc4random
2002     clock_gettime
2003     closesocket
2004     CommandLineToArgvW
2005     CoTaskMemFree
2006     CryptGenRandom
2007     fcntl
2008     flt_lim
2009     fork
2010     getaddrinfo
2011     gethrtime
2012     getopt
2013     GetProcessAffinityMask
2014     GetProcessMemoryInfo
2015     GetProcessTimes
2016     getrusage
2017     GetSystemTimeAsFileTime
2018     gettimeofday
2019     glob
2020     glXGetProcAddress
2021     gmtime_r
2022     inet_aton
2023     isatty
2024     kbhit
2025     LoadLibrary
2026     localtime_r
2027     lstat
2028     lzo1x_999_compress
2029     mach_absolute_time
2030     MapViewOfFile
2031     memalign
2032     mkstemp
2033     mmap
2034     mprotect
2035     nanosleep
2036     PeekNamedPipe
2037     posix_memalign
2038     pthread_cancel
2039     sched_getaffinity
2040     SetConsoleTextAttribute
2041     SetConsoleCtrlHandler
2042     setmode
2043     setrlimit
2044     Sleep
2045     strerror_r
2046     sysconf
2047     sysctl
2048     usleep
2049     UTGetOSTypeFromString
2050     VirtualAlloc
2051     wglGetProcAddress
2052 "
2053
2054 TOOLCHAIN_FEATURES="
2055     as_arch_directive
2056     as_dn_directive
2057     as_fpu_directive
2058     as_func
2059     as_object_arch
2060     asm_mod_q
2061     attribute_may_alias
2062     attribute_packed
2063     blocks_extension
2064     ebp_available
2065     ebx_available
2066     gnu_as
2067     gnu_windres
2068     ibm_asm
2069     inline_asm_direct_symbol_refs
2070     inline_asm_labels
2071     inline_asm_nonlocal_labels
2072     pragma_deprecated
2073     rsync_contimeout
2074     symver_asm_label
2075     symver_gnu_asm
2076     vfp_args
2077     xform_asm
2078     xmm_clobbers
2079 "
2080
2081 TYPES_LIST="
2082     CONDITION_VARIABLE_Ptr
2083     kCMVideoCodecType_HEVC
2084     socklen_t
2085     struct_addrinfo
2086     struct_group_source_req
2087     struct_ip_mreq_source
2088     struct_ipv6_mreq
2089     struct_msghdr_msg_flags
2090     struct_pollfd
2091     struct_rusage_ru_maxrss
2092     struct_sctp_event_subscribe
2093     struct_sockaddr_in6
2094     struct_sockaddr_sa_len
2095     struct_sockaddr_storage
2096     struct_stat_st_mtim_tv_nsec
2097     struct_v4l2_frmivalenum_discrete
2098 "
2099
2100 HAVE_LIST="
2101     $ARCH_EXT_LIST
2102     $(add_suffix _external $ARCH_EXT_LIST)
2103     $(add_suffix _inline   $ARCH_EXT_LIST)
2104     $ARCH_FEATURES
2105     $ATOMICS_LIST
2106     $BUILTIN_LIST
2107     $COMPLEX_FUNCS
2108     $HAVE_LIST_CMDLINE
2109     $HAVE_LIST_PUB
2110     $HEADERS_LIST
2111     $INTRINSICS_LIST
2112     $MATH_FUNCS
2113     $SYSTEM_FUNCS
2114     $THREADS_LIST
2115     $TOOLCHAIN_FEATURES
2116     $TYPES_LIST
2117     atomics_native
2118     dos_paths
2119     libc_msvcrt
2120     makeinfo
2121     makeinfo_html
2122     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2123     perl
2124     pod2man
2125     section_data_rel_ro
2126     texi2html
2127     threads
2128     uwp
2129     vaapi_drm
2130     vaapi_x11
2131     vdpau_x11
2132     winrt
2133 "
2134
2135 # options emitted with CONFIG_ prefix but not available on the command line
2136 CONFIG_EXTRA="
2137     aandcttables
2138     ac3dsp
2139     adts_header
2140     audio_frame_queue
2141     audiodsp
2142     blockdsp
2143     bswapdsp
2144     cabac
2145     cbs
2146     cbs_h264
2147     cbs_h265
2148     cbs_mpeg2
2149     dirac_parse
2150     dvprofile
2151     exif
2152     faandct
2153     faanidct
2154     fdctdsp
2155     flacdsp
2156     fmtconvert
2157     frame_thread_encoder
2158     g722dsp
2159     golomb
2160     gplv3
2161     h263dsp
2162     h264chroma
2163     h264dsp
2164     h264parse
2165     h264pred
2166     h264qpel
2167     hevcparse
2168     hpeldsp
2169     huffman
2170     huffyuvdsp
2171     huffyuvencdsp
2172     idctdsp
2173     iirfilter
2174     mdct15
2175     intrax8
2176     iso_media
2177     ividsp
2178     jpegtables
2179     lgplv3
2180     libx262
2181     llauddsp
2182     llviddsp
2183     llvidencdsp
2184     lpc
2185     lzf
2186     me_cmp
2187     mpeg_er
2188     mpegaudio
2189     mpegaudiodsp
2190     mpegaudioheader
2191     mpegvideo
2192     mpegvideoenc
2193     mss34dsp
2194     pixblockdsp
2195     qpeldsp
2196     qsv
2197     qsvdec
2198     qsvenc
2199     rangecoder
2200     riffdec
2201     riffenc
2202     rtpdec
2203     rtpenc_chain
2204     rv34dsp
2205     sinewin
2206     snappy
2207     srtp
2208     startcode
2209     texturedsp
2210     texturedspenc
2211     tpeldsp
2212     vaapi_1
2213     vaapi_encode
2214     vc1dsp
2215     videodsp
2216     vp3dsp
2217     vp56dsp
2218     vp8dsp
2219     wma_freqs
2220     wmv2dsp
2221 "
2222
2223 CMDLINE_SELECT="
2224     $ARCH_EXT_LIST
2225     $CONFIG_LIST
2226     $HAVE_LIST_CMDLINE
2227     $THREADS_LIST
2228     asm
2229     cross_compile
2230     debug
2231     extra_warnings
2232     logging
2233     lto
2234     optimizations
2235     rpath
2236     stripping
2237 "
2238
2239 PATHS_LIST="
2240     bindir
2241     datadir
2242     docdir
2243     incdir
2244     libdir
2245     mandir
2246     pkgconfigdir
2247     prefix
2248     shlibdir
2249     install_name_dir
2250 "
2251
2252 CMDLINE_SET="
2253     $PATHS_LIST
2254     ar
2255     arch
2256     as
2257     assert_level
2258     build_suffix
2259     cc
2260     objcc
2261     cpu
2262     cross_prefix
2263     custom_allocator
2264     cxx
2265     dep_cc
2266     doxygen
2267     env
2268     extra_version
2269     gas
2270     host_cc
2271     host_cflags
2272     host_extralibs
2273     host_ld
2274     host_ldflags
2275     host_os
2276     ignore_tests
2277     install
2278     ld
2279     ln_s
2280     logfile
2281     malloc_prefix
2282     nm
2283     optflags
2284     nvccflags
2285     pkg_config
2286     pkg_config_flags
2287     progs_suffix
2288     random_seed
2289     ranlib
2290     samples
2291     strip
2292     sws_max_filter_size
2293     sysinclude
2294     sysroot
2295     target_exec
2296     target_os
2297     target_path
2298     target_samples
2299     tempprefix
2300     toolchain
2301     valgrind
2302     x86asmexe
2303 "
2304
2305 CMDLINE_APPEND="
2306     extra_cflags
2307     extra_cxxflags
2308     extra_objcflags
2309     host_cppflags
2310 "
2311
2312 # code dependency declarations
2313
2314 # architecture extensions
2315
2316 armv5te_deps="arm"
2317 armv6_deps="arm"
2318 armv6t2_deps="arm"
2319 armv8_deps="aarch64"
2320 neon_deps_any="aarch64 arm"
2321 intrinsics_neon_deps="neon"
2322 vfp_deps_any="aarch64 arm"
2323 vfpv3_deps="vfp"
2324 setend_deps="arm"
2325
2326 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2327
2328 loongson2_deps="mips"
2329 loongson3_deps="mips"
2330 mipsfpu_deps="mips"
2331 mipsdsp_deps="mips"
2332 mipsdspr2_deps="mips"
2333 mips32r2_deps="mips"
2334 mips32r5_deps="mips"
2335 mips32r6_deps="mips"
2336 mips64r2_deps="mips"
2337 mips64r6_deps="mips"
2338 msa_deps="mipsfpu"
2339 mmi_deps="mips"
2340
2341 altivec_deps="ppc"
2342 dcbzl_deps="ppc"
2343 ldbrx_deps="ppc"
2344 ppc4xx_deps="ppc"
2345 vsx_deps="altivec"
2346 power8_deps="vsx"
2347
2348 cpunop_deps="i686"
2349 x86_64_select="i686"
2350 x86_64_suggest="fast_cmov"
2351
2352 amd3dnow_deps="mmx"
2353 amd3dnowext_deps="amd3dnow"
2354 i686_deps="x86"
2355 mmx_deps="x86"
2356 mmxext_deps="mmx"
2357 sse_deps="mmxext"
2358 sse2_deps="sse"
2359 sse3_deps="sse2"
2360 ssse3_deps="sse3"
2361 sse4_deps="ssse3"
2362 sse42_deps="sse4"
2363 aesni_deps="sse42"
2364 avx_deps="sse42"
2365 xop_deps="avx"
2366 fma3_deps="avx"
2367 fma4_deps="avx"
2368 avx2_deps="avx"
2369
2370 mmx_external_deps="x86asm"
2371 mmx_inline_deps="inline_asm"
2372 mmx_suggest="mmx_external mmx_inline"
2373
2374 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2375     eval dep=\$${ext}_deps
2376     eval ${ext}_external_deps='"${dep}_external"'
2377     eval ${ext}_inline_deps='"${dep}_inline"'
2378     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2379 done
2380
2381 aligned_stack_if_any="aarch64 ppc x86"
2382 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2383 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2384 fast_unaligned_if_any="aarch64 ppc x86"
2385 simd_align_16_if_any="altivec neon sse"
2386 simd_align_32_if_any="avx"
2387
2388 # system capabilities
2389 symver_if_any="symver_asm_label symver_gnu_asm"
2390 valgrind_backtrace_conflict="optimizations"
2391 valgrind_backtrace_deps="valgrind_valgrind_h"
2392
2393 # threading support
2394 atomics_gcc_if="sync_val_compare_and_swap"
2395 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2396 atomics_win32_if="MemoryBarrier"
2397 atomics_native_if_any="$ATOMICS_LIST"
2398 w32threads_deps="atomics_native"
2399 threads_if_any="$THREADS_LIST"
2400
2401 # subsystems
2402 cbs_h264_select="cbs golomb"
2403 cbs_h265_select="cbs golomb"
2404 cbs_mpeg2_select="cbs"
2405 dct_select="rdft"
2406 dirac_parse_select="golomb"
2407 error_resilience_select="me_cmp"
2408 faandct_deps="faan fdctdsp"
2409 faanidct_deps="faan idctdsp"
2410 h264dsp_select="startcode"
2411 hevcparse_select="golomb"
2412 frame_thread_encoder_deps="encoders threads"
2413 intrax8_select="blockdsp idctdsp"
2414 mdct_select="fft"
2415 mdct15_select="fft"
2416 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2417 mpeg_er_select="error_resilience"
2418 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2419 mpegaudiodsp_select="dct"
2420 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2421 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2422 vc1dsp_select="h264chroma qpeldsp startcode"
2423 rdft_select="fft"
2424
2425 # decoders / encoders
2426 aac_decoder_select="adts_header mdct15 mdct sinewin"
2427 aac_fixed_decoder_select="mdct sinewin"
2428 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2429 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2430 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2431 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2432 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2433 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2434 adpcm_g722_decoder_select="g722dsp"
2435 adpcm_g722_encoder_select="g722dsp"
2436 aic_decoder_select="golomb idctdsp"
2437 alac_encoder_select="lpc"
2438 als_decoder_select="bswapdsp"
2439 amrnb_decoder_select="lsp"
2440 amrwb_decoder_select="lsp"
2441 amv_decoder_select="sp5x_decoder exif"
2442 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2443 ape_decoder_select="bswapdsp llauddsp"
2444 apng_decoder_select="zlib"
2445 apng_encoder_select="llvidencdsp zlib"
2446 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2447 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2448 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2449 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2450 atrac1_decoder_select="mdct sinewin"
2451 atrac3_decoder_select="mdct"
2452 atrac3p_decoder_select="mdct sinewin"
2453 avrn_decoder_select="exif jpegtables"
2454 bink_decoder_select="blockdsp hpeldsp"
2455 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2456 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2457 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2458 clearvideo_decoder_select="idctdsp"
2459 cllc_decoder_select="bswapdsp"
2460 comfortnoise_encoder_select="lpc"
2461 cook_decoder_select="audiodsp mdct sinewin"
2462 cscd_decoder_select="lzo"
2463 cscd_decoder_suggest="zlib"
2464 dca_decoder_select="mdct"
2465 dds_decoder_select="texturedsp"
2466 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2467 dnxhd_decoder_select="blockdsp idctdsp"
2468 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2469 dolby_e_decoder_select="mdct"
2470 dvvideo_decoder_select="dvprofile idctdsp"
2471 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2472 dxa_decoder_select="zlib"
2473 dxv_decoder_select="lzf texturedsp"
2474 eac3_decoder_select="ac3_decoder"
2475 eac3_encoder_select="ac3_encoder"
2476 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2477 eatgq_decoder_select="aandcttables"
2478 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2479 exr_decoder_select="zlib"
2480 ffv1_decoder_select="rangecoder"
2481 ffv1_encoder_select="rangecoder"
2482 ffvhuff_decoder_select="huffyuv_decoder"
2483 ffvhuff_encoder_select="huffyuv_encoder"
2484 fic_decoder_select="golomb"
2485 flac_decoder_select="flacdsp"
2486 flac_encoder_select="bswapdsp flacdsp lpc"
2487 flashsv2_decoder_select="zlib"
2488 flashsv2_encoder_select="zlib"
2489 flashsv_decoder_select="zlib"
2490 flashsv_encoder_select="zlib"
2491 flv_decoder_select="h263_decoder"
2492 flv_encoder_select="h263_encoder"
2493 fourxm_decoder_select="blockdsp bswapdsp"
2494 fraps_decoder_select="bswapdsp huffman"
2495 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2496 g729_decoder_select="audiodsp"
2497 h261_decoder_select="mpegvideo"
2498 h261_encoder_select="aandcttables mpegvideoenc"
2499 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2500 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2501 h263i_decoder_select="h263_decoder"
2502 h263p_decoder_select="h263_decoder"
2503 h263p_encoder_select="h263_encoder"
2504 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2505 h264_decoder_suggest="error_resilience"
2506 hap_decoder_select="snappy texturedsp"
2507 hap_encoder_deps="libsnappy"
2508 hap_encoder_select="texturedspenc"
2509 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2510 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2511 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2512 iac_decoder_select="imc_decoder"
2513 imc_decoder_select="bswapdsp fft mdct sinewin"
2514 indeo3_decoder_select="hpeldsp"
2515 indeo4_decoder_select="ividsp"
2516 indeo5_decoder_select="ividsp"
2517 interplay_video_decoder_select="hpeldsp"
2518 jpegls_decoder_select="mjpeg_decoder"
2519 jv_decoder_select="blockdsp"
2520 lagarith_decoder_select="llviddsp"
2521 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2522 magicyuv_decoder_select="llviddsp"
2523 magicyuv_encoder_select="llvidencdsp"
2524 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2525 metasound_decoder_select="lsp mdct sinewin"
2526 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2527 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2528 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2529 mjpegb_decoder_select="mjpeg_decoder"
2530 mlp_decoder_select="mlp_parser"
2531 mlp_encoder_select="lpc"
2532 motionpixels_decoder_select="bswapdsp"
2533 mp1_decoder_select="mpegaudio"
2534 mp1float_decoder_select="mpegaudio"
2535 mp2_decoder_select="mpegaudio"
2536 mp2float_decoder_select="mpegaudio"
2537 mp3_decoder_select="mpegaudio"
2538 mp3adu_decoder_select="mpegaudio"
2539 mp3adufloat_decoder_select="mpegaudio"
2540 mp3float_decoder_select="mpegaudio"
2541 mp3on4_decoder_select="mpegaudio"
2542 mp3on4float_decoder_select="mpegaudio"
2543 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2544 mpc8_decoder_select="mpegaudiodsp"
2545 mpegvideo_decoder_select="mpegvideo"
2546 mpeg1video_decoder_select="mpegvideo"
2547 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2548 mpeg2video_decoder_select="mpegvideo"
2549 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2550 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2551 mpeg4_encoder_select="h263_encoder"
2552 msa1_decoder_select="mss34dsp"
2553 mscc_decoder_select="zlib"
2554 msmpeg4v1_decoder_select="h263_decoder"
2555 msmpeg4v2_decoder_select="h263_decoder"
2556 msmpeg4v2_encoder_select="h263_encoder"
2557 msmpeg4v3_decoder_select="h263_decoder"
2558 msmpeg4v3_encoder_select="h263_encoder"
2559 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2560 mts2_decoder_select="mss34dsp"
2561 mxpeg_decoder_select="mjpeg_decoder"
2562 nellymoser_decoder_select="mdct sinewin"
2563 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2564 nuv_decoder_select="idctdsp lzo"
2565 on2avc_decoder_select="mdct"
2566 opus_decoder_deps="swresample"
2567 opus_decoder_select="mdct15"
2568 opus_encoder_select="audio_frame_queue mdct15"
2569 png_decoder_select="zlib"
2570 png_encoder_select="llvidencdsp zlib"
2571 prores_decoder_select="blockdsp idctdsp"
2572 prores_encoder_select="fdctdsp"
2573 qcelp_decoder_select="lsp"
2574 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2575 ra_144_decoder_select="audiodsp"
2576 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2577 ralf_decoder_select="golomb"
2578 rawvideo_decoder_select="bswapdsp"
2579 rscc_decoder_select="zlib"
2580 rtjpeg_decoder_select="me_cmp"
2581 rv10_decoder_select="h263_decoder"
2582 rv10_encoder_select="h263_encoder"
2583 rv20_decoder_select="h263_decoder"
2584 rv20_encoder_select="h263_encoder"
2585 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2586 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2587 screenpresso_decoder_select="zlib"
2588 shorten_decoder_select="bswapdsp"
2589 sipr_decoder_select="lsp"
2590 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2591 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2592 sonic_decoder_select="golomb rangecoder"
2593 sonic_encoder_select="golomb rangecoder"
2594 sonic_ls_encoder_select="golomb rangecoder"
2595 sp5x_decoder_select="mjpeg_decoder"
2596 srgc_decoder_select="zlib"
2597 svq1_decoder_select="hpeldsp"
2598 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2599 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2600 svq3_decoder_suggest="zlib"
2601 tak_decoder_select="audiodsp"
2602 tdsc_decoder_select="zlib mjpeg_decoder"
2603 theora_decoder_select="vp3_decoder"
2604 thp_decoder_select="mjpeg_decoder"
2605 tiff_decoder_suggest="zlib lzma"
2606 tiff_encoder_suggest="zlib"
2607 truehd_decoder_select="mlp_parser"
2608 truehd_encoder_select="lpc"
2609 truemotion2_decoder_select="bswapdsp"
2610 truespeech_decoder_select="bswapdsp"
2611 tscc_decoder_select="zlib"
2612 twinvq_decoder_select="mdct lsp sinewin"
2613 txd_decoder_select="texturedsp"
2614 utvideo_decoder_select="bswapdsp llviddsp"
2615 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2616 vble_decoder_select="llviddsp"
2617 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2618 vc1_qsv_decoder_deps="libmfx"
2619 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2620 vc1image_decoder_select="vc1_decoder"
2621 vorbis_decoder_select="mdct"
2622 vorbis_encoder_select="mdct"
2623 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2624 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2625 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2626 vp6a_decoder_select="vp6_decoder"
2627 vp6f_decoder_select="vp6_decoder"
2628 vp7_decoder_select="h264pred videodsp vp8dsp"
2629 vp8_decoder_select="h264pred videodsp vp8dsp"
2630 vp9_decoder_select="videodsp vp9_parser"
2631 webp_decoder_select="vp8_decoder exif"
2632 wmalossless_decoder_select="llauddsp"
2633 wmapro_decoder_select="mdct sinewin wma_freqs"
2634 wmav1_decoder_select="mdct sinewin wma_freqs"
2635 wmav1_encoder_select="mdct sinewin wma_freqs"
2636 wmav2_decoder_select="mdct sinewin wma_freqs"
2637 wmav2_encoder_select="mdct sinewin wma_freqs"
2638 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2639 wmv1_decoder_select="h263_decoder"
2640 wmv1_encoder_select="h263_encoder"
2641 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2642 wmv2_encoder_select="h263_encoder wmv2dsp"
2643 wmv3_decoder_select="vc1_decoder"
2644 wmv3image_decoder_select="wmv3_decoder"
2645 xma1_decoder_select="wmapro_decoder"
2646 xma2_decoder_select="wmapro_decoder"
2647 zerocodec_decoder_select="zlib"
2648 zlib_decoder_select="zlib"
2649 zlib_encoder_select="zlib"
2650 zmbv_decoder_select="zlib"
2651 zmbv_encoder_select="zlib"
2652
2653 # hardware accelerators
2654 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2655 cuda_deps_any="libdl LoadLibrary"
2656 cuvid_deps="cuda"
2657 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2658 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2659 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2660 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2661 xvmc_deps="X11_extensions_XvMClib_h"
2662
2663 h263_vaapi_hwaccel_deps="vaapi"
2664 h263_vaapi_hwaccel_select="h263_decoder"
2665 h263_videotoolbox_hwaccel_deps="videotoolbox"
2666 h263_videotoolbox_hwaccel_select="h263_decoder"
2667 h264_cuvid_hwaccel_deps="cuda cuvid"
2668 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2669 h264_d3d11va_hwaccel_deps="d3d11va"
2670 h264_d3d11va_hwaccel_select="h264_decoder"
2671 h264_d3d11va2_hwaccel_deps="d3d11va"
2672 h264_d3d11va2_hwaccel_select="h264_decoder"
2673 h264_dxva2_hwaccel_deps="dxva2"
2674 h264_dxva2_hwaccel_select="h264_decoder"
2675 h264_mediacodec_hwaccel_deps="mediacodec"
2676 h264_mmal_hwaccel_deps="mmal"
2677 h264_qsv_hwaccel_deps="libmfx"
2678 h264_vaapi_hwaccel_deps="vaapi"
2679 h264_vaapi_hwaccel_select="h264_decoder"
2680 h264_vdpau_hwaccel_deps="vdpau"
2681 h264_vdpau_hwaccel_select="h264_decoder"
2682 h264_videotoolbox_hwaccel_deps="videotoolbox"
2683 h264_videotoolbox_hwaccel_select="h264_decoder"
2684 hevc_cuvid_hwaccel_deps="cuda cuvid"
2685 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2686 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2687 hevc_d3d11va_hwaccel_select="hevc_decoder"
2688 hevc_mediacodec_hwaccel_deps="mediacodec"
2689 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2690 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2691 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2692 hevc_dxva2_hwaccel_select="hevc_decoder"
2693 hevc_qsv_hwaccel_deps="libmfx"
2694 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2695 hevc_vaapi_hwaccel_select="hevc_decoder"
2696 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2697 hevc_vdpau_hwaccel_select="hevc_decoder"
2698 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2699 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2700 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2701 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2702 mpeg_xvmc_hwaccel_deps="xvmc"
2703 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2704 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2705 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2706 mpeg1_vdpau_hwaccel_deps="vdpau"
2707 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2708 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2709 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2710 mpeg1_xvmc_hwaccel_deps="xvmc"
2711 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2712 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2713 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2714 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2715 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2716 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2717 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2718 mpeg2_dxva2_hwaccel_deps="dxva2"
2719 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2720 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2721 mpeg2_mmal_hwaccel_deps="mmal"
2722 mpeg2_qsv_hwaccel_deps="libmfx"
2723 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2724 mpeg2_vaapi_hwaccel_deps="vaapi"
2725 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_vdpau_hwaccel_deps="vdpau"
2727 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2728 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2729 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2730 mpeg2_xvmc_hwaccel_deps="xvmc"
2731 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2732 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2733 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2734 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2735 mpeg4_mmal_hwaccel_deps="mmal"
2736 mpeg4_vaapi_hwaccel_deps="vaapi"
2737 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2738 mpeg4_vdpau_hwaccel_deps="vdpau"
2739 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2740 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2741 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2742 vc1_cuvid_hwaccel_deps="cuda cuvid"
2743 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2744 vc1_d3d11va_hwaccel_deps="d3d11va"
2745 vc1_d3d11va_hwaccel_select="vc1_decoder"
2746 vc1_d3d11va2_hwaccel_deps="d3d11va"
2747 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2748 vc1_dxva2_hwaccel_deps="dxva2"
2749 vc1_dxva2_hwaccel_select="vc1_decoder"
2750 vc1_mmal_hwaccel_deps="mmal"
2751 vc1_qsv_hwaccel_deps="libmfx"
2752 vc1_qsv_hwaccel_select="qsvdec_vc1"
2753 vc1_vaapi_hwaccel_deps="vaapi"
2754 vc1_vaapi_hwaccel_select="vc1_decoder"
2755 vc1_vdpau_hwaccel_deps="vdpau"
2756 vc1_vdpau_hwaccel_select="vc1_decoder"
2757 vp8_cuvid_hwaccel_deps="cuda cuvid"
2758 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2759 vp9_cuvid_hwaccel_deps="cuda cuvid"
2760 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2761 vp8_mediacodec_hwaccel_deps="mediacodec"
2762 vp8_qsv_hwaccel_deps="libmfx"
2763 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2764 vp9_d3d11va_hwaccel_select="vp9_decoder"
2765 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2766 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2767 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2768 vp9_dxva2_hwaccel_select="vp9_decoder"
2769 vp9_mediacodec_hwaccel_deps="mediacodec"
2770 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2771 vp9_vaapi_hwaccel_select="vp9_decoder"
2772 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2773 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2774 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2775 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2776 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2777
2778 # hardware-accelerated codecs
2779 omx_deps="libdl pthreads"
2780 omx_rpi_select="omx"
2781 qsvdec_select="qsv"
2782 qsvenc_select="qsv"
2783 vaapi_encode_deps="vaapi"
2784 v4l2_m2m_deps_any="linux_videodev2_h"
2785
2786 hwupload_cuda_filter_deps="cuda"
2787 scale_npp_filter_deps="cuda libnpp"
2788 scale_cuda_filter_deps="cuda_sdk"
2789 thumbnail_cuda_filter_deps="cuda_sdk"
2790
2791 nvenc_deps="cuda"
2792 nvenc_deps_any="libdl LoadLibrary"
2793 nvenc_encoder_deps="nvenc"
2794
2795 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2796 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2797 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2798 h264_cuvid_decoder_deps="cuda cuvid"
2799 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2800 h264_mediacodec_decoder_deps="mediacodec"
2801 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2802 h264_mmal_decoder_deps="mmal"
2803 h264_nvenc_encoder_deps="nvenc"
2804 h264_omx_encoder_deps="omx"
2805 h264_qsv_decoder_deps="libmfx"
2806 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2807 h264_qsv_encoder_deps="libmfx"
2808 h264_qsv_encoder_select="qsvenc"
2809 h264_rkmpp_decoder_deps="rkmpp"
2810 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2811 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2812 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2813 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2814 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2815 hevc_cuvid_decoder_deps="cuda cuvid"
2816 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2817 hevc_mediacodec_decoder_deps="mediacodec"
2818 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2819 hevc_nvenc_encoder_deps="nvenc"
2820 hevc_qsv_decoder_deps="libmfx"
2821 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2822 hevc_qsv_encoder_deps="libmfx"
2823 hevc_qsv_encoder_select="hevcparse qsvenc"
2824 hevc_rkmpp_decoder_deps="rkmpp"
2825 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2826 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2827 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2828 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2829 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2830 mjpeg_cuvid_decoder_deps="cuda cuvid"
2831 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2832 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2833 mpeg1_cuvid_decoder_deps="cuda cuvid"
2834 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2835 mpeg2_crystalhd_decoder_select="crystalhd"
2836 mpeg2_cuvid_decoder_deps="cuda cuvid"
2837 mpeg2_mmal_decoder_deps="mmal"
2838 mpeg2_mediacodec_decoder_deps="mediacodec"
2839 mpeg2_qsv_decoder_deps="libmfx"
2840 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2841 mpeg2_qsv_encoder_deps="libmfx"
2842 mpeg2_qsv_encoder_select="qsvenc"
2843 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2844 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2845 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2846 mpeg4_crystalhd_decoder_select="crystalhd"
2847 mpeg4_cuvid_decoder_deps="cuda cuvid"
2848 mpeg4_mediacodec_decoder_deps="mediacodec"
2849 mpeg4_mmal_decoder_deps="mmal"
2850 mpeg4_omx_encoder_deps="omx"
2851 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2852 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2853 msmpeg4_crystalhd_decoder_select="crystalhd"
2854 nvenc_h264_encoder_select="h264_nvenc_encoder"
2855 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2856 vc1_crystalhd_decoder_select="crystalhd"
2857 vc1_cuvid_decoder_deps="cuda cuvid"
2858 vc1_mmal_decoder_deps="mmal"
2859 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2860 vp8_cuvid_decoder_deps="cuda cuvid"
2861 vp8_mediacodec_decoder_deps="mediacodec"
2862 vp8_qsv_decoder_deps="libmfx"
2863 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2864 vp8_rkmpp_decoder_deps="rkmpp"
2865 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2866 vp8_vaapi_encoder_select="vaapi_encode"
2867 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2868 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2869 vp9_cuvid_decoder_deps="cuda cuvid"
2870 vp9_mediacodec_decoder_deps="mediacodec"
2871 vp9_rkmpp_decoder_deps="rkmpp"
2872 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2873 vp9_vaapi_encoder_select="vaapi_encode"
2874 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2875 wmv3_crystalhd_decoder_select="crystalhd"
2876
2877 # parsers
2878 aac_parser_select="adts_header"
2879 h264_parser_select="golomb h264dsp h264parse"
2880 hevc_parser_select="hevcparse"
2881 mpegaudio_parser_select="mpegaudioheader"
2882 mpegvideo_parser_select="mpegvideo"
2883 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2884 vc1_parser_select="vc1dsp"
2885
2886 # bitstream_filters
2887 aac_adtstoasc_bsf_select="adts_header"
2888 h264_metadata_bsf_select="cbs_h264"
2889 h264_redundant_pps_bsf_select="cbs_h264"
2890 hevc_metadata_bsf_select="cbs_h265"
2891 mjpeg2jpeg_bsf_select="jpegtables"
2892 mpeg2_metadata_bsf_select="cbs_mpeg2"
2893 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2894
2895 # external libraries
2896 aac_at_decoder_deps="audiotoolbox"
2897 ac3_at_decoder_deps="audiotoolbox"
2898 ac3_at_decoder_select="ac3_parser"
2899 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2900 alac_at_decoder_deps="audiotoolbox"
2901 amr_nb_at_decoder_deps="audiotoolbox"
2902 avisynth_deps_any="libdl LoadLibrary"
2903 avisynth_demuxer_deps="avisynth"
2904 avisynth_demuxer_select="riffdec"
2905 eac3_at_decoder_deps="audiotoolbox"
2906 eac3_at_decoder_select="ac3_parser"
2907 gsm_ms_at_decoder_deps="audiotoolbox"
2908 ilbc_at_decoder_deps="audiotoolbox"
2909 mp1_at_decoder_deps="audiotoolbox"
2910 mp2_at_decoder_deps="audiotoolbox"
2911 mp3_at_decoder_deps="audiotoolbox"
2912 mp1_at_decoder_select="mpegaudioheader"
2913 mp2_at_decoder_select="mpegaudioheader"
2914 mp3_at_decoder_select="mpegaudioheader"
2915 pcm_alaw_at_decoder_deps="audiotoolbox"
2916 pcm_mulaw_at_decoder_deps="audiotoolbox"
2917 qdmc_at_decoder_deps="audiotoolbox"
2918 qdm2_at_decoder_deps="audiotoolbox"
2919 aac_at_encoder_deps="audiotoolbox"
2920 aac_at_encoder_select="audio_frame_queue"
2921 alac_at_encoder_deps="audiotoolbox"
2922 alac_at_encoder_select="audio_frame_queue"
2923 ilbc_at_encoder_deps="audiotoolbox"
2924 ilbc_at_encoder_select="audio_frame_queue"
2925 pcm_alaw_at_encoder_deps="audiotoolbox"
2926 pcm_alaw_at_encoder_select="audio_frame_queue"
2927 pcm_mulaw_at_encoder_deps="audiotoolbox"
2928 pcm_mulaw_at_encoder_select="audio_frame_queue"
2929 chromaprint_muxer_deps="chromaprint"
2930 h264_videotoolbox_encoder_deps="pthreads"
2931 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2932 libcelt_decoder_deps="libcelt"
2933 libfdk_aac_decoder_deps="libfdk_aac"
2934 libfdk_aac_encoder_deps="libfdk_aac"
2935 libfdk_aac_encoder_select="audio_frame_queue"
2936 libgme_demuxer_deps="libgme"
2937 libgsm_decoder_deps="libgsm"
2938 libgsm_encoder_deps="libgsm"
2939 libgsm_ms_decoder_deps="libgsm"
2940 libgsm_ms_encoder_deps="libgsm"
2941 libilbc_decoder_deps="libilbc"
2942 libilbc_encoder_deps="libilbc"
2943 libkvazaar_encoder_deps="libkvazaar"
2944 libmodplug_demuxer_deps="libmodplug"
2945 libmp3lame_encoder_deps="libmp3lame"
2946 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2947 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2948 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2949 libopencore_amrnb_encoder_select="audio_frame_queue"
2950 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2951 libopenh264_decoder_deps="libopenh264"
2952 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2953 libopenh264_encoder_deps="libopenh264"
2954 libopenjpeg_decoder_deps="libopenjpeg"
2955 libopenjpeg_encoder_deps="libopenjpeg"
2956 libopenmpt_demuxer_deps="libopenmpt"
2957 libopus_decoder_deps="libopus"
2958 libopus_encoder_deps="libopus"
2959 libopus_encoder_select="audio_frame_queue"
2960 librsvg_decoder_deps="librsvg"
2961 libshine_encoder_deps="libshine"
2962 libshine_encoder_select="audio_frame_queue"
2963 libspeex_decoder_deps="libspeex"
2964 libspeex_encoder_deps="libspeex"
2965 libspeex_encoder_select="audio_frame_queue"
2966 libtheora_encoder_deps="libtheora"
2967 libtwolame_encoder_deps="libtwolame"
2968 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2969 libvorbis_decoder_deps="libvorbis"
2970 libvorbis_encoder_deps="libvorbis libvorbisenc"
2971 libvorbis_encoder_select="audio_frame_queue"
2972 libvpx_vp8_decoder_deps="libvpx"
2973 libvpx_vp8_encoder_deps="libvpx"
2974 libvpx_vp9_decoder_deps="libvpx"
2975 libvpx_vp9_encoder_deps="libvpx"
2976 libwavpack_encoder_deps="libwavpack"
2977 libwavpack_encoder_select="audio_frame_queue"
2978 libwebp_encoder_deps="libwebp"
2979 libwebp_anim_encoder_deps="libwebp"
2980 libx262_encoder_deps="libx262"
2981 libx264_encoder_deps="libx264"
2982 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2983 libx264rgb_encoder_select="libx264_encoder"
2984 libx265_encoder_deps="libx265"
2985 libxavs_encoder_deps="libxavs"
2986 libxvid_encoder_deps="libxvid"
2987 libzvbi_teletext_decoder_deps="libzvbi"
2988 videotoolbox_suggest="coreservices"
2989 videotoolbox_deps="corefoundation coremedia corevideo"
2990 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2991
2992 # demuxers / muxers
2993 ac3_demuxer_select="ac3_parser"
2994 aiff_muxer_select="iso_media"
2995 asf_demuxer_select="riffdec"
2996 asf_o_demuxer_select="riffdec"
2997 asf_muxer_select="riffenc"
2998 asf_stream_muxer_select="asf_muxer"
2999 avi_demuxer_select="iso_media riffdec exif"
3000 avi_muxer_select="riffenc"
3001 caf_demuxer_select="iso_media riffdec"
3002 caf_muxer_select="iso_media"
3003 dash_muxer_select="mp4_muxer"
3004 dash_demuxer_deps="libxml2"
3005 dirac_demuxer_select="dirac_parser"
3006 dts_demuxer_select="dca_parser"
3007 dtshd_demuxer_select="dca_parser"
3008 dv_demuxer_select="dvprofile"
3009 dv_muxer_select="dvprofile"
3010 dxa_demuxer_select="riffdec"
3011 eac3_demuxer_select="ac3_parser"
3012 f4v_muxer_select="mov_muxer"
3013 fifo_muxer_deps="threads"
3014 flac_demuxer_select="flac_parser"
3015 hds_muxer_select="flv_muxer"
3016 hls_muxer_select="mpegts_muxer"
3017 hls_muxer_suggest="gcrypt openssl"
3018 image2_alias_pix_demuxer_select="image2_demuxer"
3019 image2_brender_pix_demuxer_select="image2_demuxer"
3020 ipod_muxer_select="mov_muxer"
3021 ismv_muxer_select="mov_muxer"
3022 matroska_audio_muxer_select="matroska_muxer"
3023 matroska_demuxer_select="iso_media riffdec"
3024 matroska_demuxer_suggest="bzlib lzo zlib"
3025 matroska_muxer_select="iso_media riffenc"
3026 mmf_muxer_select="riffenc"
3027 mov_demuxer_select="iso_media riffdec"
3028 mov_demuxer_suggest="zlib"
3029 mov_muxer_select="iso_media riffenc rtpenc_chain"
3030 mp3_demuxer_select="mpegaudio_parser"
3031 mp3_muxer_select="mpegaudioheader"
3032 mp4_muxer_select="mov_muxer"
3033 mpegts_demuxer_select="iso_media"
3034 mpegts_muxer_select="adts_muxer latm_muxer"
3035 mpegtsraw_demuxer_select="mpegts_demuxer"
3036 mxf_d10_muxer_select="mxf_muxer"
3037 mxf_opatom_muxer_select="mxf_muxer"
3038 nut_muxer_select="riffenc"
3039 nuv_demuxer_select="riffdec"
3040 oga_muxer_select="ogg_muxer"
3041 ogg_demuxer_select="dirac_parse"
3042 ogv_muxer_select="ogg_muxer"
3043 opus_muxer_select="ogg_muxer"
3044 psp_muxer_select="mov_muxer"
3045 rtp_demuxer_select="sdp_demuxer"
3046 rtp_muxer_select="golomb"
3047 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3048 rtsp_demuxer_select="http_protocol rtpdec"
3049 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3050 sap_demuxer_select="sdp_demuxer"
3051 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3052 sdp_demuxer_select="rtpdec"
3053 smoothstreaming_muxer_select="ismv_muxer"
3054 spdif_demuxer_select="adts_header"
3055 spdif_muxer_select="adts_header"
3056 spx_muxer_select="ogg_muxer"
3057 swf_demuxer_suggest="zlib"
3058 tak_demuxer_select="tak_parser"
3059 tg2_muxer_select="mov_muxer"
3060 tgp_muxer_select="mov_muxer"
3061 vobsub_demuxer_select="mpegps_demuxer"
3062 w64_demuxer_select="wav_demuxer"
3063 w64_muxer_select="wav_muxer"
3064 wav_demuxer_select="riffdec"
3065 wav_muxer_select="riffenc"
3066 webm_muxer_select="iso_media riffenc"
3067 webm_dash_manifest_demuxer_select="matroska_demuxer"
3068 wtv_demuxer_select="mpegts_demuxer riffdec"
3069 wtv_muxer_select="mpegts_muxer riffenc"
3070 xmv_demuxer_select="riffdec"
3071 xwma_demuxer_select="riffdec"
3072
3073 # indevs / outdevs
3074 alsa_indev_deps="alsa"
3075 alsa_outdev_deps="alsa"
3076 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3077 avfoundation_indev_suggest="coregraphics applicationservices"
3078 avfoundation_indev_extralibs="-framework Foundation"
3079 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3080 caca_outdev_deps="libcaca"
3081 decklink_deps_any="libdl LoadLibrary"
3082 decklink_indev_deps="decklink threads"
3083 decklink_indev_extralibs="-lstdc++"
3084 decklink_outdev_deps="decklink threads"
3085 decklink_outdev_extralibs="-lstdc++"
3086 libndi_newtek_indev_deps="libndi_newtek"
3087 libndi_newtek_indev_extralibs="-lndi"
3088 libndi_newtek_outdev_deps="libndi_newtek"
3089 libndi_newtek_outdev_extralibs="-lndi"
3090 dshow_indev_deps="IBaseFilter"
3091 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3092 fbdev_indev_deps="linux_fb_h"
3093 fbdev_outdev_deps="linux_fb_h"
3094 gdigrab_indev_deps="CreateDIBSection"
3095 gdigrab_indev_extralibs="-lgdi32"
3096 gdigrab_indev_select="bmp_decoder"
3097 iec61883_indev_deps="libiec61883"
3098 jack_indev_deps="libjack"
3099 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3100 kmsgrab_indev_deps="libdrm"
3101 lavfi_indev_deps="avfilter"
3102 libcdio_indev_deps="libcdio"
3103 libdc1394_indev_deps="libdc1394"
3104 openal_indev_deps="openal"
3105 opengl_outdev_deps="opengl"
3106 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3107 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3108 pulse_indev_deps="libpulse"
3109 pulse_outdev_deps="libpulse"
3110 sdl2_outdev_deps="sdl2"
3111 sndio_indev_deps="sndio"
3112 sndio_outdev_deps="sndio"
3113 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3114 v4l2_indev_suggest="libv4l2"
3115 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3116 v4l2_outdev_suggest="libv4l2"
3117 vfwcap_indev_deps="vfw32 vfwcap_defines"
3118 xcbgrab_indev_deps="libxcb"
3119 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3120 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3121 xv_outdev_extralibs="-lXv -lX11 -lXext"
3122
3123 # protocols
3124 async_protocol_deps="threads"
3125 bluray_protocol_deps="libbluray"
3126 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3127 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3128 ffrtmpcrypt_protocol_select="tcp_protocol"
3129 ffrtmphttp_protocol_conflict="librtmp_protocol"
3130 ffrtmphttp_protocol_select="http_protocol"
3131 ftp_protocol_select="tcp_protocol"
3132 gopher_protocol_select="network"
3133 http_protocol_select="tcp_protocol"
3134 http_protocol_suggest="zlib"
3135 httpproxy_protocol_select="tcp_protocol"
3136 httpproxy_protocol_suggest="zlib"
3137 https_protocol_select="tls_protocol"
3138 https_protocol_suggest="zlib"
3139 icecast_protocol_select="http_protocol"
3140 librtmp_protocol_deps="librtmp"
3141 librtmpe_protocol_deps="librtmp"
3142 librtmps_protocol_deps="librtmp"
3143 librtmpt_protocol_deps="librtmp"
3144 librtmpte_protocol_deps="librtmp"
3145 libsmbclient_protocol_deps="libsmbclient gplv3"
3146 libssh_protocol_deps="libssh"
3147 mmsh_protocol_select="http_protocol"
3148 mmst_protocol_select="network"
3149 rtmp_protocol_conflict="librtmp_protocol"
3150 rtmp_protocol_select="tcp_protocol"
3151 rtmp_protocol_suggest="zlib"
3152 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3153 rtmpe_protocol_suggest="zlib"
3154 rtmps_protocol_conflict="librtmp_protocol"
3155 rtmps_protocol_select="tls_protocol"
3156 rtmps_protocol_suggest="zlib"
3157 rtmpt_protocol_select="ffrtmphttp_protocol"
3158 rtmpt_protocol_suggest="zlib"
3159 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3160 rtmpte_protocol_suggest="zlib"
3161 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3162 rtmpts_protocol_suggest="zlib"
3163 rtp_protocol_select="udp_protocol"
3164 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3165 sctp_protocol_select="network"
3166 srtp_protocol_select="rtp_protocol srtp"
3167 tcp_protocol_select="network"
3168 tls_gnutls_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol"
3169 tls_gnutls_protocol_deps="gnutls"
3170 tls_gnutls_protocol_select="tcp_protocol"
3171 tls_openssl_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol"
3172 tls_openssl_protocol_deps="openssl"
3173 tls_openssl_protocol_select="tcp_protocol"
3174 tls_schannel_protocol_deps="schannel"
3175 tls_schannel_protocol_select="tcp_protocol"
3176 tls_securetransport_protocol_deps="securetransport"
3177 tls_securetransport_protocol_select="tcp_protocol"
3178 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3179 udp_protocol_select="network"
3180 udplite_protocol_select="network"
3181 unix_protocol_deps="sys_un_h"
3182 unix_protocol_select="network"
3183
3184 # filters
3185 afftfilt_filter_deps="avcodec"
3186 afftfilt_filter_select="fft"
3187 afir_filter_deps="avcodec"
3188 afir_filter_select="fft"
3189 amovie_filter_deps="avcodec avformat"
3190 aresample_filter_deps="swresample"
3191 ass_filter_deps="libass"
3192 atempo_filter_deps="avcodec"
3193 atempo_filter_select="rdft"
3194 azmq_filter_deps="libzmq"
3195 blackframe_filter_deps="gpl"
3196 boxblur_filter_deps="gpl"
3197 bs2b_filter_deps="libbs2b"
3198 colormatrix_filter_deps="gpl"
3199 coreimage_filter_deps="coreimage appkit"
3200 coreimage_filter_extralibs="-framework OpenGL"
3201 coreimagesrc_filter_deps="coreimage appkit"
3202 coreimagesrc_filter_extralibs="-framework OpenGL"
3203 cover_rect_filter_deps="avcodec avformat gpl"
3204 cropdetect_filter_deps="gpl"
3205 deinterlace_qsv_filter_deps="libmfx"
3206 deinterlace_vaapi_filter_deps="vaapi"
3207 delogo_filter_deps="gpl"
3208 deshake_filter_select="pixelutils"
3209 deshake_filter_suggest="opencl"
3210 drawtext_filter_deps="libfreetype"
3211 drawtext_filter_suggest="libfontconfig libfribidi"
3212 elbg_filter_deps="avcodec"
3213 eq_filter_deps="gpl"
3214 fftfilt_filter_deps="avcodec"
3215 fftfilt_filter_select="rdft"
3216 find_rect_filter_deps="avcodec avformat gpl"
3217 firequalizer_filter_deps="avcodec"
3218 firequalizer_filter_select="rdft"
3219 flite_filter_deps="libflite"
3220 framerate_filter_select="pixelutils"
3221 frei0r_filter_deps="frei0r libdl"
3222 frei0r_src_filter_deps="frei0r libdl"
3223 fspp_filter_deps="gpl"
3224 geq_filter_deps="gpl"
3225 histeq_filter_deps="gpl"
3226 hqdn3d_filter_deps="gpl"
3227 interlace_filter_deps="gpl"
3228 kerndeint_filter_deps="gpl"
3229 ladspa_filter_deps="ladspa libdl"
3230 mcdeint_filter_deps="avcodec gpl"
3231 movie_filter_deps="avcodec avformat"
3232 mpdecimate_filter_deps="gpl"
3233 mpdecimate_filter_select="pixelutils"
3234 mptestsrc_filter_deps="gpl"
3235 negate_filter_deps="lut_filter"
3236 nnedi_filter_deps="gpl"
3237 ocr_filter_deps="libtesseract"
3238 ocv_filter_deps="libopencv"
3239 owdenoise_filter_deps="gpl"
3240 pan_filter_deps="swresample"
3241 perspective_filter_deps="gpl"
3242 phase_filter_deps="gpl"
3243 pp7_filter_deps="gpl"
3244 pp_filter_deps="gpl postproc"
3245 pullup_filter_deps="gpl"
3246 removelogo_filter_deps="avcodec avformat swscale"
3247 repeatfields_filter_deps="gpl"
3248 resample_filter_deps="avresample"
3249 rubberband_filter_deps="librubberband"
3250 sab_filter_deps="gpl swscale"
3251 scale2ref_filter_deps="swscale"
3252 scale_filter_deps="swscale"
3253 scale_qsv_filter_deps="libmfx"
3254 select_filter_select="pixelutils"
3255 showcqt_filter_deps="avcodec avformat swscale"
3256 showcqt_filter_suggest="libfontconfig libfreetype"
3257 showcqt_filter_select="fft"
3258 showfreqs_filter_deps="avcodec"
3259 showfreqs_filter_select="fft"
3260 showspectrum_filter_deps="avcodec"
3261 showspectrum_filter_select="fft"
3262 showspectrumpic_filter_deps="avcodec"
3263 showspectrumpic_filter_select="fft"
3264 signature_filter_deps="gpl avcodec avformat"
3265 smartblur_filter_deps="gpl swscale"
3266 sofalizer_filter_deps="libmysofa avcodec"
3267 sofalizer_filter_select="fft"
3268 spectrumsynth_filter_deps="avcodec"
3269 spectrumsynth_filter_select="fft"
3270 spp_filter_deps="gpl avcodec"
3271 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3272 stereo3d_filter_deps="gpl"
3273 subtitles_filter_deps="avformat avcodec libass"
3274 super2xsai_filter_deps="gpl"
3275 pixfmts_super2xsai_test_deps="super2xsai_filter"
3276 tinterlace_filter_deps="gpl"
3277 tinterlace_merge_test_deps="tinterlace_filter"
3278 tinterlace_pad_test_deps="tinterlace_filter"
3279 tonemap_filter_deps="const_nan"
3280 uspp_filter_deps="gpl avcodec"
3281 unsharp_filter_suggest="opencl"
3282 vaguedenoiser_filter_deps="gpl"
3283 vidstabdetect_filter_deps="libvidstab"
3284 vidstabtransform_filter_deps="libvidstab"
3285 libvmaf_filter_deps="libvmaf"
3286 zmq_filter_deps="libzmq"
3287 zoompan_filter_deps="swscale"
3288 zscale_filter_deps="libzimg const_nan"
3289 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3290
3291 # examples
3292 avio_dir_cmd_deps="avformat avutil"
3293 avio_reading_deps="avformat avcodec avutil"
3294 decode_audio_example_deps="avcodec avutil"
3295 decode_video_example_deps="avcodec avutil"
3296 demuxing_decoding_example_deps="avcodec avformat avutil"
3297 encode_audio_example_deps="avcodec avutil"
3298 encode_video_example_deps="avcodec avutil"
3299 extract_mvs_example_deps="avcodec avformat avutil"
3300 filter_audio_example_deps="avfilter avutil"
3301 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3302 filtering_video_example_deps="avfilter avcodec avformat avutil"
3303 http_multiclient_example_deps="avformat avutil fork"
3304 hw_decode_example_deps="avcodec avformat avutil"
3305 metadata_example_deps="avformat avutil"
3306 muxing_example_deps="avcodec avformat avutil swscale"
3307 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3308 remuxing_example_deps="avcodec avformat avutil"
3309 resampling_audio_example_deps="avutil swresample"
3310 scaling_video_example_deps="avutil swscale"
3311 transcode_aac_example_deps="avcodec avformat swresample"
3312 transcoding_example_deps="avfilter avcodec avformat avutil"
3313
3314 # EXTRALIBS_LIST
3315 cpu_init_extralibs="pthreads_extralibs"
3316 cws2fws_extralibs="zlib_extralibs"
3317
3318 # libraries, in linking order
3319 avcodec_deps="avutil"
3320 avcodec_suggest="libm"
3321 avcodec_select="null_bsf"
3322 avdevice_deps="avformat avcodec avutil"
3323 avdevice_suggest="libm"
3324 avfilter_deps="avutil"
3325 avfilter_suggest="libm"
3326 avformat_deps="avcodec avutil"
3327 avformat_suggest="libm network zlib"
3328 avresample_deps="avutil"
3329 avresample_suggest="libm"
3330 avutil_suggest="clock_gettime libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3331 postproc_deps="avutil gpl"
3332 postproc_suggest="libm"
3333 swresample_deps="avutil"
3334 swresample_suggest="libm libsoxr"
3335 swscale_deps="avutil"
3336 swscale_suggest="libm"
3337
3338 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3339 avfilter_extralibs="pthreads_extralibs"
3340 avutil_extralibs="nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3341
3342 # programs
3343 ffmpeg_deps="avcodec avfilter avformat swresample"
3344 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3345                null_filter
3346                trim_filter"
3347 ffmpeg_suggest="ole32 psapi shell32"
3348 ffplay_deps="avcodec avformat swscale swresample sdl2"
3349 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3350 ffplay_suggest="shell32"
3351 ffprobe_deps="avcodec avformat"
3352 ffprobe_suggest="shell32"
3353 ffserver_deps="avformat fork sarestart"
3354 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3355
3356 # documentation
3357 podpages_deps="perl"
3358 manpages_deps="perl pod2man"
3359 htmlpages_deps="perl"
3360 htmlpages_deps_any="makeinfo_html texi2html"
3361 txtpages_deps="perl makeinfo"
3362 doc_deps_any="manpages htmlpages podpages txtpages"
3363
3364 # default parameters
3365
3366 logfile="ffbuild/config.log"
3367
3368 # installation paths
3369 prefix_default="/usr/local"
3370 bindir_default='${prefix}/bin'
3371 datadir_default='${prefix}/share/ffmpeg'
3372 docdir_default='${prefix}/share/doc/ffmpeg'
3373 incdir_default='${prefix}/include'
3374 libdir_default='${prefix}/lib'
3375 mandir_default='${prefix}/share/man'
3376
3377 # toolchain
3378 ar_default="ar"
3379 cc_default="gcc"
3380 cxx_default="g++"
3381 host_cc_default="gcc"
3382 doxygen_default="doxygen"
3383 install="install"
3384 ln_s_default="ln -s -f"
3385 nm_default="nm -g"
3386 pkg_config_default=pkg-config
3387 ranlib_default="ranlib"
3388 strip_default="strip"
3389 version_script='--version-script'
3390 x86asmexe_default="nasm"
3391 windres_default="windres"
3392 nvcc_default="nvcc"
3393 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3394 striptype="direct"
3395
3396 # OS
3397 target_os_default=$(tolower $(uname -s))
3398 host_os=$target_os_default
3399
3400 # machine
3401 if test "$target_os_default" = aix; then
3402     arch_default=$(uname -p)
3403     strip_default="strip -X32_64"
3404 else
3405     arch_default=$(uname -m)
3406 fi
3407 cpu="generic"
3408 intrinsics="none"
3409
3410 # configurable options
3411 enable $PROGRAM_LIST
3412 enable $DOCUMENT_LIST
3413 enable $EXAMPLE_LIST
3414 enable $(filter_out avresample $LIBRARY_LIST)
3415 enable stripping
3416
3417 enable asm
3418 enable debug
3419 enable doc
3420 enable faan faandct faanidct
3421 enable optimizations
3422 enable runtime_cpudetect
3423 enable safe_bitstream_reader
3424 enable static
3425 enable swscale_alpha
3426 enable valgrind_backtrace
3427
3428 sws_max_filter_size_default=256
3429 set_default sws_max_filter_size
3430
3431 # internal components are enabled by default
3432 enable $EXTRALIBS_LIST
3433
3434 # Avoid external, non-system, libraries getting enabled by dependency resolution
3435 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3436
3437 # build settings
3438 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3439 LIBPREF="lib"
3440 LIBSUF=".a"
3441 FULLNAME='$(NAME)$(BUILDSUF)'
3442 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3443 SLIBPREF="lib"
3444 SLIBSUF=".so"
3445 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3446 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3447 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3448 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3449 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3450 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3451 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3452
3453 asflags_filter=echo
3454 cflags_filter=echo
3455 ldflags_filter=echo
3456
3457 AS_C='-c'
3458 AS_O='-o $@'
3459 CC_C='-c'
3460 CC_E='-E -o $@'
3461 CC_O='-o $@'
3462 CXX_C='-c'
3463 CXX_O='-o $@'
3464 OBJCC_C='-c'
3465 OBJCC_E='-E -o $@'
3466 OBJCC_O='-o $@'
3467 X86ASM_O='-o $@'
3468 LD_O='-o $@'
3469 LD_LIB='-l%'
3470 LD_PATH='-L'
3471 HOSTCC_C='-c'
3472 HOSTCC_E='-E -o $@'
3473 HOSTCC_O='-o $@'
3474 HOSTLD_O='-o $@'
3475 NVCC_C='-c'
3476 NVCC_O='-o $@'
3477
3478 host_extralibs='-lm'
3479 host_cflags_filter=echo
3480 host_ldflags_filter=echo
3481
3482 target_path='$(CURDIR)'
3483
3484 # since the object filename is not given with the -MM flag, the compiler
3485 # is only able to print the basename, and we must add the path ourselves
3486 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3487 DEPFLAGS='-MM'
3488
3489 mkdir -p ffbuild
3490
3491 # find source path
3492 if test -f configure; then
3493     source_path=.
3494 else
3495     source_path=$(cd $(dirname "$0"); pwd)
3496     case "$source_path" in
3497         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3498     esac
3499     test -e "$source_path/config.h" &&
3500         die "Out of tree builds are impossible with config.h in source dir."
3501 fi
3502
3503 for v in "$@"; do
3504     r=${v#*=}
3505     l=${v%"$r"}
3506     r=$(sh_quote "$r")
3507     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3508 done
3509
3510 find_things(){
3511     thing=$1
3512     pattern=$2
3513     file=$source_path/$3
3514     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3515 }
3516
3517 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3518 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3519 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3520 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3521 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3522 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3523 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3524 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3525 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3526
3527 find_things_extern(){
3528     thing=$1
3529     pattern=$2
3530     file=$source_path/$3
3531     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3532 }
3533
3534 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3535 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3536
3537 AVCODEC_COMPONENTS_LIST="
3538     $BSF_LIST
3539     $DECODER_LIST
3540     $ENCODER_LIST
3541     $HWACCEL_LIST
3542     $PARSER_LIST
3543 "
3544
3545 AVDEVICE_COMPONENTS_LIST="
3546     $INDEV_LIST
3547     $OUTDEV_LIST
3548 "
3549
3550 AVFILTER_COMPONENTS_LIST="
3551     $FILTER_LIST
3552 "
3553
3554 AVFORMAT_COMPONENTS_LIST="
3555     $DEMUXER_LIST
3556     $MUXER_LIST
3557     $PROTOCOL_LIST
3558 "
3559
3560 ALL_COMPONENTS="
3561     $AVCODEC_COMPONENTS_LIST
3562     $AVDEVICE_COMPONENTS_LIST
3563     $AVFILTER_COMPONENTS_LIST
3564     $AVFORMAT_COMPONENTS_LIST
3565 "
3566
3567 for n in $COMPONENT_LIST; do
3568     v=$(toupper ${n%s})_LIST
3569     eval enable \$$v
3570     eval ${n}_if_any="\$$v"
3571 done
3572
3573 enable $ARCH_EXT_LIST
3574
3575 die_unknown(){
3576     echo "Unknown option \"$1\"."
3577     echo "See $0 --help for available options."
3578     exit 1
3579 }
3580
3581 print_in_columns() {
3582     cols=$(expr $ncols / 24)
3583     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3584 }
3585
3586 show_list() {
3587     suffix=_$1
3588     shift
3589     echo $* | sed s/$suffix//g | print_in_columns
3590     exit 0
3591 }
3592
3593 rand_list(){
3594     IFS=', '
3595     set -- $*
3596     unset IFS
3597     for thing; do
3598         comp=${thing%:*}
3599         prob=${thing#$comp}
3600         prob=${prob#:}
3601         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3602         echo "prob ${prob:-0.5}"
3603         printf '%s\n' $comp
3604     done
3605 }
3606
3607 do_random(){
3608     action=$1
3609     shift
3610     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3611     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3612 }
3613
3614 for opt do
3615     optval="${opt#*=}"
3616     case "$opt" in
3617         --extra-ldflags=*)
3618             add_ldflags $optval
3619         ;;
3620         --extra-ldexeflags=*)
3621             add_ldexeflags $optval
3622         ;;
3623         --extra-ldlibflags=*)
3624             add_ldlibflags $optval
3625         ;;
3626         --extra-libs=*)
3627             add_extralibs $optval
3628         ;;
3629         --disable-devices)
3630             disable $INDEV_LIST $OUTDEV_LIST
3631         ;;
3632         --enable-debug=*)
3633             debuglevel="$optval"
3634         ;;
3635         --disable-programs)
3636             disable $PROGRAM_LIST
3637         ;;
3638         --disable-everything)
3639             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3640         ;;
3641         --disable-all)
3642             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3643             disable $LIBRARY_LIST $PROGRAM_LIST doc
3644             enable avutil
3645         ;;
3646         --enable-random|--disable-random)
3647             action=${opt%%-random}
3648             do_random ${action#--} $COMPONENT_LIST
3649         ;;
3650         --enable-random=*|--disable-random=*)
3651             action=${opt%%-random=*}
3652             do_random ${action#--} $optval
3653         ;;
3654         --enable-sdl)
3655             enable sdl2
3656         ;;
3657         --enable-*=*|--disable-*=*)
3658             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3659             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3660             eval list=\$$(toupper $thing)_LIST
3661             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3662             list=$(filter "$name" $list)
3663             [ "$list" = "" ] && warn "Option $opt did not match anything"
3664             $action $list
3665         ;;
3666         --enable-yasm|--disable-yasm)
3667             warn "The ${opt} option is only provided for compatibility and will be\n"\
3668                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3669             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3670         ;;
3671         --yasmexe=*)
3672             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3673                  "removed in the future. Use --x86asmexe instead."
3674             x86asmexe="$optval"
3675         ;;
3676         --enable-?*|--disable-?*)
3677             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3678             if is_in $option $COMPONENT_LIST; then
3679                 test $action = disable && action=unset
3680                 eval $action \$$(toupper ${option%s})_LIST
3681             elif is_in $option $CMDLINE_SELECT; then
3682                 $action $option
3683             else
3684                 die_unknown $opt
3685             fi
3686         ;;
3687         --list-*)
3688             NAME="${opt#--list-}"
3689             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3690             NAME=${NAME%s}
3691             eval show_list $NAME \$$(toupper $NAME)_LIST
3692         ;;
3693         --help|-h) show_help
3694         ;;
3695         --quiet|-q) quiet=yes
3696         ;;
3697         --fatal-warnings) enable fatal_warnings
3698         ;;
3699         --libfuzzer=*)
3700             libfuzzer_path="$optval"
3701         ;;
3702         *)
3703             optname="${opt%%=*}"
3704             optname="${optname#--}"
3705             optname=$(echo "$optname" | sed 's/-/_/g')
3706             if is_in $optname $CMDLINE_SET; then
3707                 eval $optname='$optval'
3708             elif is_in $optname $CMDLINE_APPEND; then
3709                 append $optname "$optval"
3710             else
3711                 die_unknown $opt
3712             fi
3713         ;;
3714     esac
3715 done
3716
3717 for e in $env; do
3718     eval "export $e"
3719 done
3720
3721 if disabled autodetect; then
3722
3723     # Unless iconv is explicitely disabled by the user, we still want to probe
3724     # for the iconv from the libc.
3725     disabled iconv || enable libc_iconv
3726
3727     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3728     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3729 fi
3730 # Mark specifically enabled, but normally autodetected libraries as requested.
3731 for lib in $AUTODETECT_LIBS; do
3732     enabled $lib && request $lib
3733 done
3734 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3735 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3736 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3737
3738 disabled logging && logfile=/dev/null
3739
3740 die_license_disabled() {
3741     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3742 }
3743
3744 die_license_disabled_gpl() {
3745     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3746 }
3747
3748 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3749 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3750
3751 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3752 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3753
3754 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3755
3756 # Disable all the library-specific components if the library itself
3757 # is disabled, see AVCODEC_LIST and following _LIST variables.
3758
3759 disable_components(){
3760     disabled ${1} && disable $(
3761         eval components="\$$(toupper ${1})_COMPONENTS"
3762         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3763     )
3764 }
3765
3766 map 'disable_components $v' $LIBRARY_LIST
3767
3768 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3769 set >> $logfile
3770
3771 test -n "$valgrind" && toolchain="valgrind-memcheck"
3772
3773 enabled ossfuzz && {
3774     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3775     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3776 }
3777
3778 case "$toolchain" in
3779     *-asan)
3780         cc_default="${toolchain%-asan}"
3781         add_cflags  -fsanitize=address
3782         add_ldflags -fsanitize=address
3783     ;;
3784     *-msan)
3785         cc_default="${toolchain%-msan}"
3786         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3787         add_ldflags -fsanitize=memory
3788     ;;
3789     *-tsan)
3790         cc_default="${toolchain%-tsan}"
3791         add_cflags  -fsanitize=thread -fPIE
3792         add_ldflags -fsanitize=thread -pie
3793         case "$toolchain" in
3794             gcc-tsan)
3795                 add_cflags  -fPIC
3796                 add_ldflags -fPIC
3797                 ;;
3798         esac
3799     ;;
3800     *-usan)
3801         cc_default="${toolchain%-usan}"
3802         add_cflags  -fsanitize=undefined
3803         add_ldflags -fsanitize=undefined
3804     ;;
3805     valgrind-*)
3806         target_exec_default="valgrind"
3807         case "$toolchain" in
3808             valgrind-massif)
3809                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3810                 ;;
3811             valgrind-memcheck)
3812                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3813                 ;;
3814         esac
3815     ;;
3816     msvc)
3817         # Check whether the current MSVC version needs the C99 converter.
3818         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3819         # support enough of C99 to build ffmpeg. Default to the new
3820         # behaviour if the regexp was unable to match anything, since this
3821         # successfully parses the version number of existing supported
3822         # versions that require the converter (MSVC 2010 and 2012).
3823         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3824         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3825             cc_default="cl"
3826             cxx_default="cl"
3827         else
3828             cc_default="c99wrap cl"
3829             cxx_default="c99wrap cl"
3830         fi
3831         ld_default="$source_path/compat/windows/mslink"
3832         nm_default="dumpbin -symbols"
3833         ar_default="lib"
3834         case "$arch" in
3835         arm*)
3836             as_default="armasm"
3837             ;;
3838         esac
3839         target_os_default="win32"
3840         # Use a relative path for TMPDIR. This makes sure all the
3841         # ffconf temp files are written with a relative path, avoiding
3842         # issues with msys/win32 path conversion for MSVC parameters
3843         # such as -Fo<file> or -out:<file>.
3844         TMPDIR=.
3845     ;;
3846     icl)
3847         cc_default="icl"
3848         ld_default="xilink"
3849         nm_default="dumpbin -symbols"
3850         ar_default="xilib"
3851         target_os_default="win32"
3852         TMPDIR=.
3853     ;;
3854     gcov)
3855         add_cflags  -fprofile-arcs -ftest-coverage
3856         add_ldflags -fprofile-arcs -ftest-coverage
3857     ;;
3858     llvm-cov)
3859         add_cflags -fprofile-arcs -ftest-coverage
3860         add_ldflags --coverage
3861     ;;
3862     hardened)
3863         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3864         add_cflags   -fno-strict-overflow -fstack-protector-all
3865         add_ldflags  -Wl,-z,relro -Wl,-z,now
3866         add_cflags   -fPIE
3867         add_ldexeflags -fPIE -pie
3868     ;;
3869     ?*)
3870         die "Unknown toolchain $toolchain"
3871     ;;
3872 esac
3873
3874 test -n "$cross_prefix" && enable cross_compile
3875
3876 if enabled cross_compile; then
3877     test -n "$arch" && test -n "$target_os" ||
3878         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3879 fi
3880
3881 ar_default="${cross_prefix}${ar_default}"
3882 cc_default="${cross_prefix}${cc_default}"
3883 cxx_default="${cross_prefix}${cxx_default}"
3884 nm_default="${cross_prefix}${nm_default}"
3885 pkg_config_default="${cross_prefix}${pkg_config_default}"
3886 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3887     ranlib_default="${cross_prefix}${ranlib_default} -D"
3888 else
3889     ranlib_default="${cross_prefix}${ranlib_default}"
3890 fi
3891 strip_default="${cross_prefix}${strip_default}"
3892 windres_default="${cross_prefix}${windres_default}"
3893
3894 sysinclude_default="${sysroot}/usr/include"
3895
3896 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3897     target_exec target_os x86asmexe nvcc
3898 enabled cross_compile || host_cc_default=$cc
3899 set_default host_cc
3900
3901 pkg_config_fail_message=""
3902 if ! $pkg_config --version >/dev/null 2>&1; then
3903     warn "$pkg_config not found, library detection may fail."
3904     pkg_config=false
3905 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3906     pkg_config_fail_message="
3907 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3908 fi
3909
3910 if test $doxygen != $doxygen_default && \
3911   ! $doxygen --version >/dev/null 2>&1; then
3912     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3913 fi
3914
3915 exesuf() {
3916     case $1 in
3917         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3918     esac
3919 }
3920
3921 EXESUF=$(exesuf $target_os)
3922 HOSTEXESUF=$(exesuf $host_os)
3923
3924 # set temporary file name
3925 : ${TMPDIR:=$TEMPDIR}
3926 : ${TMPDIR:=$TMP}
3927 : ${TMPDIR:=/tmp}
3928
3929 if [ -n "$tempprefix" ] ; then
3930     mktemp(){
3931         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3932         echo "$tmpname"
3933         mkdir "$tmpname"
3934     }
3935 elif ! check_cmd mktemp -u XXXXXX; then
3936     # simple replacement for missing mktemp
3937     # NOT SAFE FOR GENERAL USE
3938     mktemp(){
3939         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3940         echo "$tmpname"
3941         mkdir "$tmpname"
3942     }
3943 fi
3944
3945 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3946     die "Unable to create temporary directory in $TMPDIR."
3947
3948 tmpfile(){
3949     tmp="${FFTMPDIR}/test"$2
3950     (set -C; exec > $tmp) 2> /dev/null ||
3951         die "Unable to create temporary file in $FFTMPDIR."
3952     eval $1=$tmp
3953 }
3954
3955 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3956 trap 'exit 2' INT
3957
3958 tmpfile TMPASM .asm
3959 tmpfile TMPC   .c
3960 tmpfile TMPCPP .cpp
3961 tmpfile TMPE   $EXESUF
3962 tmpfile TMPH   .h
3963 tmpfile TMPM   .m
3964 tmpfile TMPO   .o
3965 tmpfile TMPS   .S
3966 tmpfile TMPSH  .sh
3967 tmpfile TMPV   .ver
3968
3969 unset -f mktemp
3970
3971 chmod +x $TMPE
3972
3973 # make sure we can execute files in $TMPDIR
3974 cat > $TMPSH 2>> $logfile <<EOF
3975 #! /bin/sh
3976 EOF
3977 chmod +x $TMPSH >> $logfile 2>&1
3978 if ! $TMPSH >> $logfile 2>&1; then
3979     cat <<EOF
3980 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3981 variable to another directory and make sure that it is not mounted noexec.
3982 EOF
3983     die "Sanity test failed."
3984 fi
3985
3986 armasm_flags(){
3987     for flag; do
3988         case $flag in
3989             # Filter out MSVC cl.exe options from cflags that shouldn't
3990             # be passed to gas-preprocessor
3991             -M[TD]*)                                            ;;
3992             *)                  echo $flag                      ;;
3993         esac
3994    done
3995 }
3996
3997 ccc_flags(){
3998     for flag; do
3999         case $flag in
4000             -std=c99)           echo -c99                       ;;
4001             -mcpu=*)            echo -arch ${flag#*=}           ;;
4002             -mieee)             echo -ieee                      ;;
4003             -O*|-fast)          echo $flag                      ;;
4004             -fno-math-errno)    echo -assume nomath_errno       ;;
4005             -g)                 echo -g3                        ;;
4006             -Wall)              echo -msg_enable level2         ;;
4007             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
4008             -Wl,*)              echo $flag                      ;;
4009             -f*|-W*)                                            ;;
4010             *)                  echo $flag                      ;;
4011         esac
4012    done
4013 }
4014
4015 cparser_flags(){
4016     for flag; do
4017         case $flag in
4018             -Wno-switch)             echo -Wno-switch-enum ;;
4019             -Wno-format-zero-length) ;;
4020             -Wdisabled-optimization) ;;
4021             -Wno-pointer-sign)       echo -Wno-other ;;
4022             *)                       echo $flag ;;
4023         esac
4024     done
4025 }
4026
4027 msvc_common_flags(){
4028     for flag; do
4029         case $flag in
4030             # In addition to specifying certain flags under the compiler
4031             # specific filters, they must be specified here as well or else the
4032             # generic catch all at the bottom will print the original flag.
4033             -Wall)                ;;
4034             -Wextra)              ;;
4035             -std=c99)             ;;
4036             # Common flags
4037             -fomit-frame-pointer) ;;
4038             -g)                   echo -Z7 ;;
4039             -fno-math-errno)      ;;
4040             -fno-common)          ;;
4041             -fno-signed-zeros)    ;;
4042             -fPIC)                ;;
4043             -mthumb)              ;;
4044             -march=*)             ;;
4045             -lz)                  echo zlib.lib ;;
4046             -lx264)               echo libx264.lib ;;
4047             -lstdc++)             ;;
4048             -l*)                  echo ${flag#-l}.lib ;;
4049             -LARGEADDRESSAWARE)   echo $flag ;;
4050             -L*)                  echo -libpath:${flag#-L} ;;
4051             *)                    echo $flag ;;
4052         esac
4053     done
4054 }
4055
4056 msvc_flags(){
4057     msvc_common_flags "$@"
4058     for flag; do
4059         case $flag in
4060             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4061                                        -wd4554 ;;
4062             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4063                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4064                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4065                                        -wd4307 \
4066                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4067         esac
4068     done
4069 }
4070
4071 icl_flags(){
4072     msvc_common_flags "$@"
4073     for flag; do
4074         case $flag in
4075             # Despite what Intel's documentation says -Wall, which is supported
4076             # on Windows, does enable remarks so disable them here.
4077             -Wall)                echo $flag -Qdiag-disable:remark ;;
4078             -std=c99)             echo -Qstd=c99 ;;
4079             -flto)                echo -ipo ;;
4080         esac
4081     done
4082 }
4083
4084 icc_flags(){
4085     for flag; do
4086         case $flag in
4087             -flto)                echo -ipo ;;
4088             *)                    echo $flag ;;
4089         esac
4090     done
4091 }
4092
4093 pgi_flags(){
4094     for flag; do
4095         case $flag in
4096             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4097             -fomit-frame-pointer) echo -Mnoframe ;;
4098             -g)                   echo -gopt ;;
4099             *)                    echo $flag ;;
4100         esac
4101     done
4102 }
4103
4104 suncc_flags(){
4105     for flag; do
4106         case $flag in
4107             -march=*|-mcpu=*)
4108                 case "${flag#*=}" in
4109                     native)                   echo -xtarget=native       ;;
4110                     v9|niagara)               echo -xarch=sparc          ;;
4111                     ultrasparc)               echo -xarch=sparcvis       ;;
4112                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4113                     i586|pentium)             echo -xchip=pentium        ;;
4114                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4115                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4116                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4117                     pentium4*)          echo -xtarget=pentium4           ;;
4118                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4119                     *-sse3)             echo -xarch=sse3                 ;;
4120                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4121                     bonnell)                   echo -xarch=ssse3         ;;
4122                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4123                     westmere)                  echo -xtarget=westmere    ;;
4124                     silvermont)                echo -xarch=sse4_2        ;;
4125                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4126                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4127                                                echo -xarch=avx           ;;
4128                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4129                     btver1)                    echo -xarch=amdsse4a      ;;
4130                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4131                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4132                     k8|opteron|athlon64|athlon-fx)
4133                                                echo -xarch=sse2a         ;;
4134                     athlon*)                   echo -xarch=pentium_proa  ;;
4135                 esac
4136                 ;;
4137             -std=c99)             echo -xc99              ;;
4138             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4139             -fPIC)                echo -KPIC -xcode=pic32 ;;
4140             -W*,*)                echo $flag              ;;
4141             -f*-*|-W*|-mimpure-text)                      ;;
4142             -shared)              echo -G                 ;;
4143             *)                    echo $flag              ;;
4144         esac
4145     done
4146 }
4147
4148 tms470_flags(){
4149     for flag; do
4150         case $flag in
4151             -march=*|-mcpu=*)
4152                 case "${flag#*=}" in
4153                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4154                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4155                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4156                     armv6*|arm11*)          echo -mv=6   ;;
4157                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4158                                             echo -mv=5e  ;;
4159                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4160                 esac
4161                 ;;
4162             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4163             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4164             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4165             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4166             -msoft-float)   echo --float_support=vfplib       ;;
4167             -O[0-3]|-mf=*)  echo $flag                        ;;
4168             -g)             echo -g -mn                       ;;
4169             -pds=*)         echo $flag                        ;;
4170             -D*|-I*)        echo $flag                        ;;
4171             --gcc|--abi=*)  echo $flag                        ;;
4172             -me)            echo $flag                        ;;
4173         esac
4174     done
4175 }
4176
4177 probe_cc(){
4178     pfx=$1
4179     _cc=$2
4180     first=$3
4181
4182     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4183     unset _ld_o _ldflags _ld_lib _ld_path
4184     unset _depflags _DEPCMD _DEPFLAGS
4185     _flags_filter=echo
4186
4187     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4188         true # no-op to avoid reading stdin in following checks
4189     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4190         _type=llvm_gcc
4191         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4192         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4193         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4194         _cflags_speed='-O3'
4195         _cflags_size='-Os'
4196     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4197         _type=gcc
4198         gcc_version=$($_cc --version | head -n1)
4199         gcc_basever=$($_cc -dumpversion)
4200         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4201         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4202         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4203         case $gcc_basever in
4204             2) ;;
4205             2.*) ;;
4206             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4207         esac
4208         if [ "$first" = true ]; then
4209             case $gcc_basever in
4210                 4.2*)
4211                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4212             esac
4213         fi
4214         _cflags_speed='-O3'
4215         _cflags_size='-Os'
4216     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4217         _type=icc
4218         _ident=$($_cc --version | head -n1)
4219         _depflags='-MMD'
4220         _cflags_speed='-O3'
4221         _cflags_size='-Os'
4222         _cflags_noopt='-O1'
4223         _flags_filter=icc_flags
4224     elif $_cc -v 2>&1 | grep -q xlc; then
4225         _type=xlc
4226         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4227         _cflags_speed='-O5'
4228         _cflags_size='-O5 -qcompact'
4229     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4230         _type=ccc
4231         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4232         _DEPFLAGS='-M'
4233         _cflags_speed='-fast'
4234         _cflags_size='-O1'
4235         _flags_filter=ccc_flags
4236     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4237         test -d "$sysroot" || die "No valid sysroot specified."
4238         _type=armcc
4239         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4240         armcc_conf="$PWD/armcc.conf"
4241         $_cc --arm_linux_configure                 \
4242              --arm_linux_config_file="$armcc_conf" \
4243              --configure_sysroot="$sysroot"        \
4244              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4245              die "Error creating armcc configuration file."
4246         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4247         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4248         as_default="${cross_prefix}gcc"
4249         _depflags='-MMD'
4250         _cflags_speed='-O3'
4251         _cflags_size='-Os'
4252     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4253         _type=tms470
4254         _ident=$($_cc -version | head -n1 | tr -s ' ')
4255         _flags='--gcc --abi=eabi -me'
4256         _cc_e='-ppl -fe=$@'
4257         _cc_o='-fe=$@'
4258         _depflags='-ppa -ppd=$(@:.o=.d)'
4259         _cflags_speed='-O3 -mf=5'
4260         _cflags_size='-O3 -mf=2'
4261         _flags_filter=tms470_flags
4262     elif $_cc -v 2>&1 | grep -q clang; then
4263         _type=clang
4264         _ident=$($_cc --version 2>/dev/null | head -n1)
4265         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4266         _cflags_speed='-O3'
4267         _cflags_size='-Oz'
4268     elif $_cc -V 2>&1 | grep -q Sun; then
4269         _type=suncc
4270         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4271         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4272         _DEPFLAGS='-xM1 -xc99'
4273         _ldflags='-std=c99'
4274         _cflags_speed='-O5'
4275         _cflags_size='-O5 -xspace'
4276         _flags_filter=suncc_flags
4277     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4278         _type=pathscale
4279         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4280         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4281         _cflags_speed='-O2'
4282         _cflags_size='-Os'
4283         _flags_filter='filter_out -Wdisabled-optimization'
4284     elif $_cc -v 2>&1 | grep -q Open64; then
4285         _type=open64
4286         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4287         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4288         _cflags_speed='-O2'
4289         _cflags_size='-Os'
4290         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4291     elif $_cc -V 2>&1 | grep -q Portland; then
4292         _type=pgi
4293         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4294         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4295         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4296         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4297         _cflags_noopt="-O"
4298         _flags_filter=pgi_flags
4299     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4300         _type=armasm
4301         _ident=$($_cc | head -n1)
4302         # 4509: "This form of conditional instruction is deprecated"
4303         _flags="-nologo -ignore 4509"
4304         _flags_filter=armasm_flags
4305     elif $_cc 2>&1 | grep -q Intel; then
4306         _type=icl
4307         _ident=$($_cc 2>&1 | head -n1)
4308         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4309         # Not only is O3 broken on 13.x+ but it is slower on all previous
4310         # versions (tested) as well.
4311         _cflags_speed="-O2"
4312         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4313         if $_cc 2>&1 | grep -q Linker; then
4314             _ld_o='-out:$@'
4315         else
4316             _ld_o='-Fe$@'
4317         fi
4318         _cc_o='-Fo$@'
4319         _cc_e='-P'
4320         _flags_filter=icl_flags
4321         _ld_lib='lib%.a'
4322         _ld_path='-libpath:'
4323         # -Qdiag-error to make icl error when seeing certain unknown arguments
4324         _flags='-nologo -Qdiag-error:4044,10157'
4325         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4326         # with MSVC which enables it by default.
4327         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4328         disable stripping
4329     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4330         # lld can emulate multiple different linkers; in ms link.exe mode,
4331         # the -? parameter gives the help output which contains an identifyable
4332         # string, while it gives an error in other modes.
4333         _type=lld-link
4334         # The link.exe mode doesn't have a switch for getting the version,
4335         # but we can force it back to gnu mode and get the version from there.
4336         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4337         _ld_o='-out:$@'
4338         _flags_filter=msvc_flags
4339         _ld_lib='lib%.a'
4340         _ld_path='-libpath:'
4341     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4342         _type=msvc
4343         _ident=$($_cc 2>&1 | head -n1)
4344         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4345         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4346         _cflags_speed="-O2"
4347         _cflags_size="-O1"
4348         _cflags_noopt="-O1"
4349         if $_cc -nologo- 2>&1 | grep -q Linker; then
4350             _ld_o='-out:$@'
4351         else
4352             _ld_o='-Fe$@'
4353         fi
4354         _cc_o='-Fo$@'
4355         _cc_e='-P -Fi$@'
4356         _flags_filter=msvc_flags
4357         _ld_lib='lib%.a'
4358         _ld_path='-libpath:'
4359         _flags='-nologo'
4360         disable stripping
4361     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4362         _type=cparser
4363         _ident=$($_cc --version | head -n1)
4364         _depflags='-MMD'
4365         _cflags_speed='-O4'
4366         _cflags_size='-O2'
4367         _flags_filter=cparser_flags
4368     fi
4369
4370     eval ${pfx}_type=\$_type
4371     eval ${pfx}_ident=\$_ident
4372 }
4373
4374 set_ccvars(){
4375     eval ${1}_C=\${_cc_c-\${${1}_C}}
4376     eval ${1}_E=\${_cc_e-\${${1}_E}}
4377     eval ${1}_O=\${_cc_o-\${${1}_O}}
4378
4379     if [ -n "$_depflags" ]; then
4380         eval ${1}_DEPFLAGS=\$_depflags
4381     else
4382         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4383         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4384         eval DEP${1}FLAGS=\$_flags
4385     fi
4386 }
4387
4388 probe_cc cc "$cc" "true"
4389 cflags_filter=$_flags_filter
4390 cflags_speed=$_cflags_speed
4391 cflags_size=$_cflags_size
4392 cflags_noopt=$_cflags_noopt
4393 add_cflags $_flags $_cflags
4394 cc_ldflags=$_ldflags
4395 set_ccvars CC
4396 set_ccvars CXX
4397
4398 probe_cc hostcc "$host_cc"
4399 host_cflags_filter=$_flags_filter
4400 host_cflags_speed=$_cflags_speed
4401 add_host_cflags  $_flags $_cflags
4402 set_ccvars HOSTCC
4403
4404 test -n "$cc_type" && enable $cc_type ||
4405     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4406
4407 : ${as_default:=$cc}
4408 : ${objcc_default:=$cc}
4409 : ${dep_cc_default:=$cc}
4410 : ${ld_default:=$cc}
4411 : ${host_ld_default:=$host_cc}
4412 set_default ar as objcc dep_cc ld ln_s host_ld windres
4413
4414 probe_cc as "$as"
4415 asflags_filter=$_flags_filter
4416 add_asflags $_flags $_cflags
4417 set_ccvars AS
4418
4419 probe_cc objcc "$objcc"
4420 objcflags_filter=$_flags_filter
4421 add_objcflags $_flags $_cflags
4422 set_ccvars OBJC
4423
4424 probe_cc ld "$ld"
4425 ldflags_filter=$_flags_filter
4426 add_ldflags $_flags $_ldflags
4427 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4428 LD_O=${_ld_o-$LD_O}
4429 LD_LIB=${_ld_lib-$LD_LIB}
4430 LD_PATH=${_ld_path-$LD_PATH}
4431
4432 probe_cc hostld "$host_ld"
4433 host_ldflags_filter=$_flags_filter
4434 add_host_ldflags $_flags $_ldflags
4435 HOSTLD_O=${_ld_o-$HOSTLD_O}
4436
4437 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4438     probe_cc depcc "$dep_cc"
4439     CCDEP=${_DEPCMD:-$DEPCMD}
4440     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4441     DEPCCFLAGS=$_flags
4442 fi
4443
4444 if $ar 2>&1 | grep -q Microsoft; then
4445     arflags="-nologo"
4446     ar_o='-out:$@'
4447 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4448     arflags="rq"
4449     ar_o='$@'
4450 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4451     arflags='-Xany -r -c'
4452     ar_o='$@'
4453 elif $ar 2>&1 | grep -q "\[D\] "; then
4454     arflags="rcD"
4455     ar_o='$@'
4456 else
4457     arflags="rc"
4458     ar_o='$@'
4459 fi
4460
4461 add_cflags $extra_cflags
4462 add_cxxflags $extra_cxxflags
4463 add_objcflags $extra_objcflags
4464 add_asflags $extra_cflags
4465
4466 if test -n "$sysroot"; then
4467     case "$cc_type" in
4468         gcc|llvm_gcc|clang)
4469             add_cppflags --sysroot="$sysroot"
4470             add_ldflags --sysroot="$sysroot"
4471 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4472             add_cppflags -isysroot "$sysroot"
4473             add_ldflags -isysroot "$sysroot"
4474         ;;
4475         tms470)
4476             add_cppflags -I"$sysinclude"
4477             add_ldflags  --sysroot="$sysroot"
4478         ;;
4479     esac
4480 fi
4481
4482 if test "$cpu" = host; then
4483     enabled cross_compile &&
4484         die "--cpu=host makes no sense when cross-compiling."
4485
4486     case "$cc_type" in
4487         gcc|llvm_gcc)
4488             check_native(){
4489                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4490                 sed -n "/cc1.*$1=/{
4491                             s/.*$1=\\([^ ]*\\).*/\\1/
4492                             p
4493                             q
4494                         }" $TMPE
4495             }
4496             cpu=$(check_native -march || check_native -mcpu)
4497         ;;
4498         clang)
4499             check_native(){
4500                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4501                 sed -n "/cc1.*-target-cpu /{
4502                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4503                             p
4504                             q
4505                         }" $TMPE
4506             }
4507             cpu=$(check_native -march)
4508         ;;
4509     esac
4510
4511     test "${cpu:-host}" = host &&
4512         die "--cpu=host not supported with compiler $cc"
4513 fi
4514
4515 # Deal with common $arch aliases
4516 case "$arch" in
4517     aarch64|arm64)
4518         arch="aarch64"
4519     ;;
4520     arm*|iPad*|iPhone*)
4521         arch="arm"
4522     ;;
4523     mips*|IP*)
4524         case "$arch" in
4525         *el)
4526             add_cppflags -EL
4527             add_ldflags -EL
4528         ;;
4529         *eb)
4530             add_cppflags -EB
4531             add_ldflags -EB
4532         ;;
4533         esac
4534         arch="mips"
4535     ;;
4536     parisc*|hppa*)
4537         arch="parisc"
4538     ;;
4539     "Power Macintosh"|ppc*|powerpc*)
4540         arch="ppc"
4541     ;;
4542     s390|s390x)
4543         arch="s390"
4544     ;;
4545     sh4|sh)
4546         arch="sh4"
4547     ;;
4548     sun4*|sparc*)
4549         arch="sparc"
4550     ;;
4551     tilegx|tile-gx)
4552         arch="tilegx"
4553     ;;
4554     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4555         arch="x86"
4556     ;;
4557 esac
4558
4559 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4560 enable $arch
4561
4562 # Add processor-specific flags
4563 if enabled aarch64; then
4564
4565     case $cpu in
4566         armv*)
4567             cpuflags="-march=$cpu"
4568         ;;
4569         *)
4570             cpuflags="-mcpu=$cpu"
4571         ;;
4572     esac
4573
4574 elif enabled alpha; then
4575
4576     cpuflags="-mcpu=$cpu"
4577
4578 elif enabled arm; then
4579
4580     check_arm_arch() {
4581         check_cpp_condition stddef.h \
4582             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4583             $cpuflags
4584     }
4585
4586     probe_arm_arch() {
4587         if   check_arm_arch 4;        then echo armv4
4588         elif check_arm_arch 4T;       then echo armv4t
4589         elif check_arm_arch 5;        then echo armv5
4590         elif check_arm_arch 5E;       then echo armv5e
4591         elif check_arm_arch 5T;       then echo armv5t
4592         elif check_arm_arch 5TE;      then echo armv5te
4593         elif check_arm_arch 5TEJ;     then echo armv5te
4594         elif check_arm_arch 6;        then echo armv6
4595         elif check_arm_arch 6J;       then echo armv6j
4596         elif check_arm_arch 6K;       then echo armv6k
4597         elif check_arm_arch 6Z;       then echo armv6z
4598         elif check_arm_arch 6ZK;      then echo armv6zk
4599         elif check_arm_arch 6T2;      then echo armv6t2
4600         elif check_arm_arch 7;        then echo armv7
4601         elif check_arm_arch 7A  7_A;  then echo armv7-a
4602         elif check_arm_arch 7S;       then echo armv7-a
4603         elif check_arm_arch 7R  7_R;  then echo armv7-r
4604         elif check_arm_arch 7M  7_M;  then echo armv7-m
4605         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4606         elif check_arm_arch 8A  8_A;  then echo armv8-a
4607         fi
4608     }
4609
4610     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4611
4612     case $cpu in
4613         armv*)
4614             cpuflags="-march=$cpu"
4615             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4616         ;;
4617         *)
4618             cpuflags="-mcpu=$cpu"
4619             case $cpu in
4620                 cortex-a*)                               subarch=armv7a  ;;
4621                 cortex-r*)                               subarch=armv7r  ;;
4622                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4623                 arm11*)                                  subarch=armv6   ;;
4624                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4625                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4626                 *)                             subarch=$(probe_arm_arch) ;;
4627             esac
4628         ;;
4629     esac
4630
4631     case "$subarch" in
4632         armv5t*)    enable fast_clz                ;;
4633         armv[6-8]*)
4634             enable fast_clz
4635             disabled fast_unaligned || enable fast_unaligned
4636             ;;
4637     esac
4638
4639 elif enabled avr32; then
4640
4641     case $cpu in
4642         ap7[02]0[0-2])
4643             subarch="avr32_ap"
4644             cpuflags="-mpart=$cpu"
4645         ;;
4646         ap)
4647             subarch="avr32_ap"
4648             cpuflags="-march=$cpu"
4649         ;;
4650         uc3[ab]*)
4651             subarch="avr32_uc"
4652             cpuflags="-mcpu=$cpu"
4653         ;;
4654         uc)
4655             subarch="avr32_uc"
4656             cpuflags="-march=$cpu"
4657         ;;
4658     esac
4659
4660 elif enabled bfin; then
4661
4662     cpuflags="-mcpu=$cpu"
4663
4664 elif enabled mips; then
4665
4666     cpuflags="-march=$cpu"
4667
4668     if [ "$cpu" != "generic" ]; then
4669         disable mips32r2
4670         disable mips32r5
4671         disable mips64r2
4672         disable mips32r6
4673         disable mips64r6
4674         disable loongson2
4675         disable loongson3
4676
4677         case $cpu in
4678             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4679                 enable mips32r2
4680                 disable msa
4681             ;;
4682             p5600|i6400|p6600)
4683                 disable mipsdsp
4684                 disable mipsdspr2
4685             ;;
4686             loongson*)
4687                 enable loongson2
4688                 enable loongson3
4689                 enable local_aligned
4690                 enable simd_align_16
4691                 enable fast_64bit
4692                 enable fast_clz
4693                 enable fast_cmov
4694                 enable fast_unaligned
4695                 disable aligned_stack
4696                 disable mipsfpu
4697                 disable mipsdsp
4698                 disable mipsdspr2
4699                 case $cpu in
4700                     loongson3*)
4701                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4702                     ;;
4703                     loongson2e)
4704                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4705                     ;;
4706                     loongson2f)
4707                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4708                     ;;
4709                 esac
4710             ;;
4711             *)
4712                 # Unknown CPU. Disable everything.
4713                 warn "unknown CPU. Disabling all MIPS optimizations."
4714                 disable mipsfpu
4715                 disable mipsdsp
4716                 disable mipsdspr2
4717                 disable msa
4718                 disable mmi
4719             ;;
4720         esac
4721
4722         case $cpu in
4723             24kc)
4724                 disable mipsfpu
4725                 disable mipsdsp
4726                 disable mipsdspr2
4727             ;;
4728             24kf*)
4729                 disable mipsdsp
4730                 disable mipsdspr2
4731             ;;
4732             24kec|34kc|1004kc)
4733                 disable mipsfpu
4734                 disable mipsdspr2
4735             ;;
4736             24kef*|34kf*|1004kf*)
4737                 disable mipsdspr2
4738             ;;
4739             74kc)
4740                 disable mipsfpu
4741             ;;
4742             p5600)
4743                 enable mips32r5
4744                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4745             ;;
4746             i6400)
4747                 enable mips64r6
4748                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4749             ;;
4750             p6600)
4751                 enable mips64r6
4752                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4753             ;;
4754         esac
4755     else
4756         # We do not disable anything. Is up to the user to disable the unwanted features.
4757         warn 'generic cpu selected'
4758     fi
4759
4760 elif enabled ppc; then
4761
4762     disable ldbrx
4763
4764     case $(tolower $cpu) in
4765         601|ppc601|powerpc601)
4766             cpuflags="-mcpu=601"
4767             disable altivec
4768         ;;
4769         603*|ppc603*|powerpc603*)
4770             cpuflags="-mcpu=603"
4771             disable altivec
4772         ;;
4773         604*|ppc604*|powerpc604*)
4774             cpuflags="-mcpu=604"
4775             disable altivec
4776         ;;
4777         g3|75*|ppc75*|powerpc75*)
4778             cpuflags="-mcpu=750"
4779             disable altivec
4780         ;;
4781         g4|745*|ppc745*|powerpc745*)
4782             cpuflags="-mcpu=7450"
4783             disable vsx
4784         ;;
4785         74*|ppc74*|powerpc74*)
4786             cpuflags="-mcpu=7400"
4787             disable vsx
4788         ;;
4789         g5|970|ppc970|powerpc970)
4790             cpuflags="-mcpu=970"
4791             disable vsx
4792         ;;
4793         power[3-6]*)
4794             cpuflags="-mcpu=$cpu"
4795             disable vsx
4796         ;;
4797         power[7-8]*)
4798             cpuflags="-mcpu=$cpu"
4799         ;;
4800         cell)
4801             cpuflags="-mcpu=cell"
4802             enable ldbrx
4803             disable vsx
4804         ;;
4805         e500mc)
4806             cpuflags="-mcpu=e500mc"
4807             disable altivec
4808         ;;
4809         e500v2)
4810             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4811             disable altivec
4812             disable dcbzl
4813         ;;
4814         e500)
4815             cpuflags="-mcpu=8540 -mhard-float"
4816             disable altivec
4817             disable dcbzl
4818         ;;
4819     esac
4820
4821 elif enabled sparc; then
4822
4823     case $cpu in
4824         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4825             cpuflags="-mcpu=$cpu"
4826         ;;
4827         ultrasparc*|niagara[234])
4828             cpuflags="-mcpu=$cpu"
4829         ;;
4830     esac
4831
4832 elif enabled x86; then
4833
4834     case $cpu in
4835         i[345]86|pentium)
4836             cpuflags="-march=$cpu"
4837             disable i686
4838             disable mmx
4839         ;;
4840         # targets that do NOT support nopl and conditional mov (cmov)
4841         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4842             cpuflags="-march=$cpu"
4843             disable i686
4844         ;;
4845         # targets that do support nopl and conditional mov (cmov)
4846         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4847         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4848         |amdfam10|barcelona|b[dt]ver*|znver*)
4849             cpuflags="-march=$cpu"
4850             enable i686
4851             enable fast_cmov
4852         ;;
4853         # targets that do support conditional mov but on which it's slow
4854         pentium4|pentium4m|prescott|nocona)
4855             cpuflags="-march=$cpu"
4856             enable i686
4857             disable fast_cmov
4858         ;;
4859     esac
4860
4861 fi
4862
4863 if [ "$cpu" != generic ]; then
4864     add_cflags  $cpuflags
4865     add_asflags $cpuflags
4866     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4867 fi
4868
4869 # compiler sanity check
4870 check_exec <<EOF
4871 int main(void){ return 0; }
4872 EOF
4873 if test "$?" != 0; then
4874     echo "$cc is unable to create an executable file."
4875     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4876         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4877         echo "Only do this if you know what cross compiling means."
4878     fi
4879     die "C compiler test failed."
4880 fi
4881
4882 add_cppflags -D_ISOC99_SOURCE
4883 add_cxxflags -D__STDC_CONSTANT_MACROS
4884 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4885
4886 # some compilers silently accept -std=c11, so we also need to check that the
4887 # version macro is defined properly
4888 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4889     add_cflags -std=c11 ||
4890     check_cflags -std=c99
4891
4892 check_cppflags -D_FILE_OFFSET_BITS=64
4893 check_cppflags -D_LARGEFILE_SOURCE
4894
4895 add_host_cppflags -D_ISOC99_SOURCE
4896 check_host_cflags -std=c99
4897 check_host_cflags -Wall
4898 check_host_cflags $host_cflags_speed
4899
4900 check_64bit(){
4901     arch32=$1
4902     arch64=$2
4903     expr=$3
4904     check_code cc "" "int test[2*($expr) - 1]" &&
4905         subarch=$arch64 || subarch=$arch32
4906 }
4907
4908 case "$arch" in
4909     aarch64|alpha|ia64)
4910         spic=$shared
4911     ;;
4912     mips)
4913         check_64bit mips mips64 '_MIPS_SIM > 1'
4914         spic=$shared
4915     ;;
4916     parisc)
4917         check_64bit parisc parisc64 'sizeof(void *) > 4'
4918         spic=$shared
4919     ;;
4920     ppc)
4921         check_64bit ppc ppc64 'sizeof(void *) > 4'
4922         spic=$shared
4923     ;;
4924     s390)
4925         check_64bit s390 s390x 'sizeof(void *) > 4'
4926         spic=$shared
4927     ;;
4928     sparc)
4929         check_64bit sparc sparc64 'sizeof(void *) > 4'
4930         spic=$shared
4931     ;;
4932     x86)
4933         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4934         # Treat x32 as x64 for now. Note it also needs spic=$shared
4935         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4936             subarch=x86_64
4937         if test "$subarch" = "x86_64"; then
4938             spic=$shared
4939         fi
4940     ;;
4941     ppc)
4942         check_cc <<EOF && subarch="ppc64"
4943         int test[(int)sizeof(char*) - 7];
4944 EOF
4945     ;;
4946 esac
4947
4948 enable $subarch
4949 enabled spic && enable_weak pic
4950
4951 enabled x86_64 && objformat=elf64 || objformat="elf32"
4952
4953 # OS specific
4954 case $target_os in
4955     aix)
4956         SHFLAGS=-shared
4957         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4958         enabled shared && add_ldflags -Wl,-brtl
4959         ;;
4960     android)
4961         disable symver
4962         enable section_data_rel_ro
4963         SLIB_INSTALL_NAME='$(SLIBNAME)'
4964         SLIB_INSTALL_LINKS=
4965         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4966         ;;
4967     haiku)
4968         prefix_default="/boot/common"
4969         network_extralibs="-lnetwork"
4970         host_extralibs=
4971         ;;
4972     sunos)
4973         SHFLAGS='-shared -Wl,-h,$$(@F)'
4974         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4975         network_extralibs="-lsocket -lnsl"
4976         add_cppflags -D__EXTENSIONS__
4977         # When using suncc to build, the Solaris linker will mark
4978         # an executable with each instruction set encountered by
4979         # the Solaris assembler.  As our libraries contain their own
4980         # guards for processor-specific code, instead suppress
4981         # generation of the HWCAPS ELF section on Solaris x86 only.
4982         enabled_all suncc x86 &&
4983             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4984             add_ldflags -Wl,-M,mapfile
4985         nm_default='nm -P -g'
4986         version_script='-M'
4987         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4988         ;;
4989     netbsd)
4990         disable symver
4991         oss_indev_extralibs="-lossaudio"
4992         oss_outdev_extralibs="-lossaudio"
4993         enabled gcc || check_ldflags -Wl,-zmuldefs
4994         ;;
4995     openbsd|bitrig)
4996         disable symver
4997         SHFLAGS='-shared'
4998         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4999         SLIB_INSTALL_LINKS=
5000         oss_indev_extralibs="-lossaudio"
5001         oss_outdev_extralibs="-lossaudio"
5002         ;;
5003     dragonfly)
5004         disable symver
5005         ;;
5006     freebsd)
5007         ;;
5008     bsd/os)
5009         add_extralibs -lpoll -lgnugetopt
5010         strip="strip -d"
5011         ;;
5012     darwin)
5013         enabled ppc && add_asflags -force_cpusubtype_ALL
5014         install_name_dir_default='$(SHLIBDIR)'
5015         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5016         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5017         strip="${strip} -x"
5018         add_ldflags -Wl,-dynamic,-search_paths_first
5019         check_cflags -Werror=partial-availability
5020         SLIBSUF=".dylib"
5021         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5022         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5023         enabled x86_64 && objformat="macho64" || objformat="macho32"
5024         enabled_any pic shared x86_64 ||
5025             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5026         check_header dispatch/dispatch.h &&
5027             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5028         version_script='-exported_symbols_list'
5029         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5030         ;;
5031     msys*)
5032         die "Native MSYS builds are discouraged, please use the MINGW environment."
5033         ;;
5034     mingw32*|mingw64*)
5035         if test $target_os = "mingw32ce"; then
5036             disable network
5037         else
5038             target_os=mingw32
5039         fi
5040         LIBTARGET=i386
5041         if enabled x86_64; then
5042             LIBTARGET="i386:x86-64"
5043         elif enabled arm; then
5044             LIBTARGET=arm-wince
5045         fi
5046         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5047         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5048         shlibdir_default="$bindir_default"
5049         SLIBPREF=""
5050         SLIBSUF=".dll"
5051         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5052         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5053         dlltool="${cross_prefix}dlltool"
5054         if check_cmd lib.exe -list; then
5055             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5056             if enabled x86_64; then
5057                 LIBTARGET=x64
5058             fi
5059         elif check_cmd $dlltool --version; then
5060             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5061         fi
5062         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5063         SLIB_INSTALL_LINKS=
5064         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5065         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5066         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
5067         enabled x86_64 && objformat="win64" || objformat="win32"
5068         ranlib=:
5069         enable dos_paths
5070         check_ldflags -Wl,--nxcompat,--dynamicbase
5071         # Lets work around some stupidity in binutils.
5072         # ld will strip relocations from executables even though we need them
5073         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5074         # however ld then forgets what the entry point should be (oops) so we
5075         # have to manually (re)set it.
5076         if enabled x86_32; then
5077             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5078         elif enabled x86_64; then
5079             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5080             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5081             # Set image base >4GB for extra entropy with HEASLR
5082             add_ldexeflags -Wl,--image-base,0x140000000
5083             append SHFLAGS -Wl,--image-base,0x180000000
5084         fi
5085         ;;
5086     win32|win64)
5087         disable symver
5088         if enabled shared; then
5089             # Link to the import library instead of the normal static library
5090             # for shared libs.
5091             LD_LIB='%.lib'
5092             # Cannot build both shared and static libs with MSVC or icl.
5093             disable static
5094         fi
5095         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5096         shlibdir_default="$bindir_default"
5097         SLIBPREF=""
5098         SLIBSUF=".dll"
5099         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5100         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5101         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5102         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5103         SLIB_INSTALL_LINKS=
5104         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5105         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5106         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5107         enabled x86_64 && objformat="win64" || objformat="win32"
5108         ranlib=:
5109         enable dos_paths
5110         ;;
5111     cygwin*)
5112         target_os=cygwin
5113         shlibdir_default="$bindir_default"
5114         SLIBPREF="cyg"
5115         SLIBSUF=".dll"
5116         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5117         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5118         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5119         SLIB_INSTALL_LINKS=
5120         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5121         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5122         enabled x86_64 && objformat="win64" || objformat="win32"
5123         enable dos_paths
5124         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5125         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5126         ;;
5127     *-dos|freedos|opendos)
5128         network_extralibs="-lsocket"
5129         objformat="coff"
5130         enable dos_paths
5131         add_cppflags -U__STRICT_ANSI__
5132         ;;
5133     linux)
5134         enable section_data_rel_ro
5135         enabled_any arm aarch64 && enable_weak linux_perf
5136         ;;
5137     irix*)
5138         target_os=irix
5139         ranlib="echo ignoring ranlib"
5140         ;;
5141     os/2*)
5142         strip="lxlite -CS"
5143         striptype=""
5144         objformat="aout"
5145         add_cppflags -D_GNU_SOURCE
5146         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5147         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5148         LIBSUF="_s.a"
5149         SLIBPREF=""
5150         SLIBSUF=".dll"
5151         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5152         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5153         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5154             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5155             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5156             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5157             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5158         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5159             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5160         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5161         SLIB_INSTALL_LINKS=
5162         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5163         enable dos_paths
5164         enable_weak os2threads
5165         ;;
5166     gnu/kfreebsd)
5167         add_cppflags -D_BSD_SOURCE
5168         ;;
5169     gnu)
5170         ;;
5171     qnx)
5172         add_cppflags -D_QNX_SOURCE
5173         network_extralibs="-lsocket"
5174         ;;
5175     symbian)
5176         SLIBSUF=".dll"
5177         enable dos_paths
5178         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5179         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5180         add_ldflags -Wl,--target1-abs,--no-undefined \
5181                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5182                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5183         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5184                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5185                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5186         ;;
5187     osf1)
5188         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5189         ;;
5190     minix)
5191         ;;
5192     none)
5193         ;;
5194     *)
5195         die "Unknown OS '$target_os'."
5196         ;;
5197 esac
5198
5199 # test if creating links works
5200 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5201 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5202 mkdir "$link_dest"
5203 $ln_s "$link_dest" "$link_name"
5204 touch "$link_dest/test_file"
5205 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5206     # create link to source path
5207     [ -e src ] && rm src
5208     $ln_s "$source_path" src
5209     source_link=src
5210 else
5211     # creating directory links doesn't work
5212     # fall back to using the full source path
5213     source_link="$source_path"
5214 fi
5215 # cleanup
5216 rm -r "$link_dest"
5217 rm -r "$link_name"
5218
5219 # determine libc flavour
5220
5221 probe_libc(){
5222     pfx=$1
5223     pfx_no_=${pfx%_}
5224     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5225     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5226         eval ${pfx}libc_type=uclibc
5227         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5228     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5229         eval ${pfx}libc_type=glibc
5230         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5231     # MinGW headers can be installed on Cygwin, so check for newlib first.
5232     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5233         eval ${pfx}libc_type=newlib
5234         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5235     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5236     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5237         eval ${pfx}libc_type=mingw64
5238         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5239             add_compat msvcrt/snprintf.o
5240             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5241         fi
5242         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5243         eval test \$${pfx_no_}cc_type = "gcc" &&
5244             add_${pfx}cppflags -D__printf__=__gnu_printf__
5245     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5246          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5247         eval ${pfx}libc_type=mingw32
5248         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5249             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5250             die "ERROR: MinGW32 runtime version must be >= 3.15."
5251         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5252         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5253             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5254         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5255             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5256         eval test \$${pfx_no_}cc_type = "gcc" &&
5257             add_${pfx}cppflags -D__printf__=__gnu_printf__
5258     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5259         eval ${pfx}libc_type=msvcrt
5260         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5261             if [ "$pfx" = host_ ]; then
5262                 add_host_cppflags -Dsnprintf=_snprintf
5263             else
5264                 add_compat strtod.o strtod=avpriv_strtod
5265                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5266                                              _snprintf=avpriv_snprintf  \
5267                                              vsnprintf=avpriv_vsnprintf
5268             fi
5269         fi
5270         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5271         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5272         # 0x601 by default unless something else is set by the user.
5273         # This can easily lead to us detecting functions only present
5274         # in such new versions and producing binaries requiring windows 7.0.
5275         # Therefore explicitly set the default to XP unless the user has
5276         # set something else on the command line.
5277         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5278         # family. For these cases, configure is free to use any functions
5279         # found in the SDK headers by default. (Alternatively, we could force
5280         # _WIN32_WINNT to 0x0602 in that case.)
5281         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5282             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5283 #ifdef WINAPI_FAMILY
5284 #include <winapifamily.h>
5285 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5286 #error not desktop
5287 #endif
5288 #endif
5289 EOF
5290         if [ "$pfx" = "" ]; then
5291             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5292             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5293         fi
5294     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5295         eval ${pfx}libc_type=klibc
5296     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5297         eval ${pfx}libc_type=bionic
5298     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5299         eval ${pfx}libc_type=solaris
5300         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5301     fi
5302     check_${pfx}cc <<EOF
5303 #include <time.h>
5304 void *v = localtime_r;
5305 EOF
5306 test "$?" != 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
5307 #include <time.h>
5308 void *v = localtime_r;
5309 EOF
5310
5311 }
5312
5313 probe_libc
5314 test -n "$libc_type" && enable libc_$libc_type
5315 probe_libc host_
5316 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5317
5318 # hacks for compiler/libc/os combinations
5319
5320 case $libc_type in
5321     bionic)
5322         add_compat strtod.o strtod=avpriv_strtod
5323         ;;
5324     glibc)
5325         if enabled tms470; then
5326             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5327             add_cppflags -D__USER_LABEL_PREFIX__=
5328             add_cppflags -D__builtin_memset=memset
5329             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5330             add_cflags   -pds=48    # incompatible redefinition of macro
5331         elif enabled ccc; then
5332             add_ldflags -Wl,-z,now  # calls to libots crash without this
5333         fi
5334         ;;
5335 esac
5336
5337 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5338     add_cppflags '-I\$(SRC_PATH)/compat/float'
5339
5340 esc(){
5341     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5342 }
5343
5344 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5345
5346 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5347
5348 set_default libdir
5349 : ${shlibdir_default:="$libdir"}
5350 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5351
5352 set_default $PATHS_LIST
5353 set_default nm
5354
5355 # we need to build at least one lib type
5356 if ! enabled_any static shared; then
5357     cat <<EOF
5358 At least one library type must be built.
5359 Specify --enable-static to build the static libraries or --enable-shared to
5360 build the shared libraries as well. To only build the shared libraries specify
5361 --disable-static in addition to --enable-shared.
5362 EOF
5363     exit 1
5364 fi
5365
5366 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5367
5368 enable_weak_pic() {
5369     disabled pic && return
5370     enable pic
5371     add_cppflags -DPIC
5372     case "$target_os" in
5373     mingw*|cygwin*)
5374         ;;
5375     *)
5376         add_cflags -fPIC
5377         ;;
5378     esac
5379     add_asflags  -fPIC
5380 }
5381
5382 enabled pic && enable_weak_pic
5383
5384 check_cc <<EOF || die "Symbol mangling check failed."
5385 int ff_extern;
5386 EOF
5387 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5388 extern_prefix=${sym%%ff_extern*}
5389
5390 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5391
5392 _restrict=
5393 for restrict_keyword in restrict __restrict__ __restrict; do
5394     check_cc <<EOF && _restrict=$restrict_keyword && break
5395 void foo(char * $restrict_keyword p);
5396 EOF
5397 done
5398
5399 check_cc <<EOF && enable pragma_deprecated
5400 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5401 EOF
5402
5403 check_cc <<EOF && enable attribute_packed
5404 struct { int x; } __attribute__((packed)) x;
5405 EOF
5406
5407 check_cc <<EOF && enable attribute_may_alias
5408 union { int x; } __attribute__((may_alias)) x;
5409 EOF
5410
5411 check_cc <<EOF || die "endian test failed"
5412 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5413 EOF
5414 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5415
5416 check_cc <<EOF && enable const_nan
5417 #include <math.h>
5418 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5419 EOF
5420
5421 if ! enabled ppc64 || enabled bigendian; then
5422     disable vsx
5423 fi
5424
5425 check_gas() {
5426     log "check_gas using '$as' as AS"
5427     # :vararg is used on aarch64, arm and ppc altivec
5428     check_as <<EOF || return 1
5429 .macro m n, y:vararg=0
5430 \n: .int \y
5431 .endm
5432 m x
5433 EOF
5434     # .altmacro is only used in arm asm
5435     ! enabled arm || check_as <<EOF || return 1
5436 .altmacro
5437 EOF
5438     enable gnu_as
5439     return 0
5440 }
5441
5442 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5443     nogas=:
5444     enabled_any arm aarch64 && nogas=die
5445     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5446     as_noop=-v
5447
5448     case $as_type in
5449         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5450         gcc)  gaspp_as_type=gas ;;
5451         *)    gaspp_as_type=$as_type ;;
5452     esac
5453
5454     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5455
5456     test "${as#*gas-preprocessor.pl}" != "$as" ||
5457     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5458         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5459
5460     if ! check_gas ; then
5461         as=${gas:=$as}
5462         check_gas || \
5463             $nogas "GNU assembler not found, install/update gas-preprocessor"
5464     fi
5465
5466     check_as <<EOF && enable as_func
5467 .func test
5468 .endfunc
5469 EOF
5470 fi
5471
5472 check_inline_asm inline_asm_labels '"1:\n"'
5473
5474 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5475
5476 if enabled aarch64; then
5477     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5478     # internal assembler in clang 3.3 does not support this instruction
5479     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5480     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5481
5482     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5483
5484 elif enabled alpha; then
5485
5486     check_cflags -mieee
5487
5488 elif enabled arm; then
5489
5490     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5491
5492     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5493 float func(float a, float b){ return a+b; }
5494 EOF
5495
5496     enabled thumb && check_cflags -mthumb || check_cflags -marm
5497
5498     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5499         enable vfp_args
5500     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5501         enable vfp_args
5502     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5503         case "${cross_prefix:-$cc}" in
5504             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5505             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5506 __asm__ (".eabi_attribute 28, 1");
5507 int main(void) { return 0; }
5508 EOF
5509         esac
5510         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5511     fi
5512
5513     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5514     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5515     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5516     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5517     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5518     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5519     enabled setend  && check_insn setend  'setend be'
5520
5521     [ $target_os = linux ] || [ $target_os = android ] ||
5522         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5523             $ARCH_EXT_LIST_ARM
5524
5525     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5526
5527     check_as <<EOF && enable as_arch_directive
5528 .arch armv7-a
5529 EOF
5530     check_as <<EOF && enable as_dn_directive
5531 ra .dn d0.i16
5532 .unreq ra
5533 EOF
5534     check_as <<EOF && enable as_fpu_directive
5535 .fpu neon
5536 EOF
5537
5538     # llvm's integrated assembler supports .object_arch from llvm 3.5
5539     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5540         check_as <<EOF && enable as_object_arch
5541 .object_arch armv4
5542 EOF
5543
5544     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5545
5546 elif enabled mips; then
5547
5548     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5549     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5550     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5551
5552     # Enable minimum ISA based on selected options
5553     if enabled mips64; then
5554         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5555         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5556         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5557     else
5558         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5559         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5560         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5561         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5562     fi
5563
5564     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5565     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5566     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5567     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5568     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5569
5570     if enabled bigendian && enabled msa; then
5571         disable msa
5572     fi
5573
5574 elif enabled parisc; then
5575
5576     if enabled gcc; then
5577         case $($cc -dumpversion) in
5578             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5579         esac
5580     fi
5581
5582 elif enabled ppc; then
5583
5584     enable local_aligned
5585
5586     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5587     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5588     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5589     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5590
5591     # AltiVec flags: The FSF version of GCC differs from the Apple version
5592     if enabled altivec; then
5593         check_cflags -maltivec -mabi=altivec &&
5594         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5595         check_cflags -faltivec
5596
5597         # check if our compiler supports Motorola AltiVec C API
5598         check_cc <<EOF || disable altivec
5599 $inc_altivec_h
5600 int main(void) {
5601     vector signed int v1 = (vector signed int) { 0 };
5602     vector signed int v2 = (vector signed int) { 1 };
5603     v1 = vec_add(v1, v2);
5604     return 0;
5605 }
5606 EOF
5607
5608         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5609     fi
5610
5611     if enabled vsx; then
5612         check_cflags -mvsx &&
5613         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5614     fi
5615
5616     if enabled power8; then
5617         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5618     fi
5619
5620 elif enabled x86; then
5621
5622     check_builtin rdtsc    intrin.h   "__rdtsc()"
5623     check_builtin mm_empty mmintrin.h "_mm_empty()"
5624
5625     enable local_aligned
5626
5627     # check whether EBP is available on x86
5628     # As 'i' is stored on the stack, this program will crash
5629     # if the base pointer is used to access it because the
5630     # base pointer is cleared in the inline assembly code.
5631     check_exec_crash <<EOF && enable ebp_available
5632 volatile int i=0;
5633 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5634 return i;
5635 EOF
5636
5637     # check whether EBX is available on x86
5638     check_inline_asm ebx_available '""::"b"(0)' &&
5639         check_inline_asm ebx_available '"":::"%ebx"'
5640
5641     # check whether xmm clobbers are supported
5642     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5643
5644     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5645         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5646
5647     # check whether binutils is new enough to compile SSSE3/MMXEXT
5648     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5649     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5650
5651     probe_x86asm(){
5652         x86asmexe_probe=$1
5653         if check_cmd $x86asmexe_probe -v; then
5654             x86asmexe=$x86asmexe_probe
5655             x86asm_type=nasm
5656             x86asm_debug="-g -F dwarf"
5657         elif check_cmd $x86asmexe_probe --version; then
5658             x86asmexe=$x86asmexe_probe
5659             x86asm_type=yasm
5660             x86asm_debug="-g dwarf2"
5661         fi
5662         check_x86asm "movbe ecx, [5]" && enable x86asm
5663     }
5664
5665     if ! disabled_any asm mmx x86asm; then
5666         disable x86asm
5667         for program in $x86asmexe nasm yasm; do
5668             probe_x86asm $program && break
5669         done
5670         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5671         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5672         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5673         X86ASMFLAGS="-f $objformat"
5674         enabled pic               && append X86ASMFLAGS "-DPIC"
5675         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5676         case "$objformat" in
5677             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5678         esac
5679
5680         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5681         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5682         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5683         check_x86asm "CPU amdnop" || disable cpunop
5684     fi
5685
5686     case "$cpu" in
5687         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5688             disable fast_clz
5689         ;;
5690     esac
5691
5692 fi
5693
5694 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5695
5696 check_ldflags -Wl,--as-needed
5697 check_ldflags -Wl,-z,noexecstack
5698
5699 if ! disabled network; then
5700     check_func getaddrinfo $network_extralibs
5701     check_func inet_aton $network_extralibs
5702
5703     check_type netdb.h "struct addrinfo"
5704     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5705     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5706     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5707     check_type poll.h "struct pollfd"
5708     check_type netinet/sctp.h "struct sctp_event_subscribe"
5709     check_struct "sys/socket.h" "struct msghdr" msg_flags
5710     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5711     check_type netinet/in.h "struct sockaddr_in6"
5712     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5713     check_type "sys/types.h sys/socket.h" socklen_t
5714
5715     # Prefer arpa/inet.h over winsock2
5716     if check_header arpa/inet.h ; then
5717         check_func closesocket
5718     elif check_header winsock2.h ; then
5719         check_func_headers winsock2.h closesocket -lws2 &&
5720             network_extralibs="-lws2" ||
5721         { check_func_headers winsock2.h closesocket -lws2_32 &&
5722             network_extralibs="-lws2_32"; } || disable winsock2_h network
5723         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5724
5725         check_type ws2tcpip.h socklen_t
5726         check_type ws2tcpip.h "struct addrinfo"
5727         check_type ws2tcpip.h "struct group_source_req"
5728         check_type ws2tcpip.h "struct ip_mreq_source"
5729         check_type ws2tcpip.h "struct ipv6_mreq"
5730         check_type winsock2.h "struct pollfd"
5731         check_struct winsock2.h "struct sockaddr" sa_len
5732         check_type ws2tcpip.h "struct sockaddr_in6"
5733         check_type ws2tcpip.h "struct sockaddr_storage"
5734     else
5735         disable network
5736     fi
5737 fi
5738
5739 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5740 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5741 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5742 check_builtin sarestart signal.h "SA_RESTART"
5743 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5744 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5745 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5746 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5747
5748 case "$custom_allocator" in
5749     jemalloc)
5750         # jemalloc by default does not use a prefix
5751         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5752     ;;
5753     tcmalloc)
5754         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5755         malloc_prefix=tc_
5756     ;;
5757 esac
5758
5759 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5760 check_func  ${malloc_prefix}memalign            && enable memalign
5761 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5762
5763 check_func  access
5764 check_func_headers stdlib.h arc4random
5765 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5766 check_func  fcntl
5767 check_func  fork
5768 check_func  gethrtime
5769 check_func  getopt
5770 check_func  getrusage
5771 check_func  gettimeofday
5772 check_func  isatty
5773 check_func  mach_absolute_time
5774 check_func  mkstemp
5775 check_func  mmap
5776 check_func  mprotect
5777 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5778 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5779 check_func  sched_getaffinity
5780 check_func  setrlimit
5781 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5782 check_func  strerror_r
5783 check_func  sysconf
5784 check_func  sysctl
5785 check_func  usleep
5786
5787 check_func_headers conio.h kbhit
5788 check_func_headers io.h setmode
5789 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5790 check_func_headers stdlib.h getenv
5791 check_func_headers sys/stat.h lstat
5792
5793 check_func_headers windows.h GetProcessAffinityMask
5794 check_func_headers windows.h GetProcessTimes
5795 check_func_headers windows.h GetSystemTimeAsFileTime
5796 check_func_headers windows.h LoadLibrary
5797 check_func_headers windows.h MapViewOfFile
5798 check_func_headers windows.h PeekNamedPipe
5799 check_func_headers windows.h SetConsoleTextAttribute
5800 check_func_headers windows.h SetConsoleCtrlHandler
5801 check_func_headers windows.h Sleep
5802 check_func_headers windows.h VirtualAlloc
5803 check_struct windows.h "CONDITION_VARIABLE" Ptr
5804 check_func_headers glob.h glob
5805 enabled xlib &&
5806     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5807
5808 check_header d3d11.h
5809 check_header direct.h
5810 check_header dirent.h
5811 check_header dlfcn.h
5812 check_header dxgidebug.h
5813 check_header dxva.h
5814 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5815 check_header io.h
5816 check_header libcrystalhd/libcrystalhd_if.h
5817 check_header mach/mach_time.h
5818 check_header malloc.h
5819 check_header net/udplite.h
5820 check_header poll.h
5821 check_header sys/mman.h
5822 check_header sys/param.h
5823 check_header sys/resource.h
5824 check_header sys/select.h
5825 check_header sys/time.h
5826 check_header sys/un.h
5827 check_header termios.h
5828 check_header unistd.h
5829 check_header valgrind/valgrind.h
5830 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5831 check_header windows.h
5832 check_header X11/extensions/XvMClib.h
5833 check_header asm/types.h
5834
5835 # it seems there are versions of clang in some distros that try to use the
5836 # gcc headers, which explodes for stdatomic
5837 # so we also check that atomics actually work here
5838 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5839
5840 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5841 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5842 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5843 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5844
5845 enabled appkit       && check_apple_framework AppKit
5846 enabled audiotoolbox && check_apple_framework AudioToolbox
5847 enabled avfoundation && check_apple_framework AVFoundation
5848 enabled coreimage    && check_apple_framework CoreImage
5849 enabled videotoolbox && check_apple_framework VideoToolbox
5850
5851 check_apple_framework CoreFoundation
5852 check_apple_framework CoreMedia
5853 check_apple_framework CoreVideo
5854
5855 enabled avfoundation && {
5856     disable coregraphics applicationservices
5857     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5858     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5859
5860 enabled videotoolbox && {
5861     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5862     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5863 }
5864
5865 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5866
5867 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5868 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5869 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5870 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5871 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5872
5873 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5874 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5875 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5876 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5877 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5878 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5879 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5880 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5881 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5882
5883 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5884
5885 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5886
5887 if ! disabled w32threads && ! enabled pthreads; then
5888     check_func_headers "windows.h process.h" _beginthreadex &&
5889         enable w32threads || disable w32threads
5890     if ! enabled w32threads && enabled winrt; then
5891         check_func_headers "windows.h" CreateThread &&
5892             enable w32threads || disable w32threads
5893     fi
5894 fi
5895
5896 # check for some common methods of building with pthread support
5897 # do this before the optional library checks as some of them require pthreads
5898 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5899     if check_lib pthreads pthread.h pthread_join   -pthread &&
5900        check_lib pthreads pthread.h pthread_create -pthread; then
5901         add_cflags -pthread
5902     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5903          check_lib pthreads pthread.h pthread_create -pthreads; then
5904         add_cflags -pthreads
5905     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5906          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5907         add_cflags -ldl -pthread
5908     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5909          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5910         :
5911     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5912          check_lib pthreads pthread.h pthread_create -lpthread; then
5913         :
5914     elif check_func pthread_join && check_func pthread_create; then
5915         enable pthreads
5916     fi
5917     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5918 fi
5919
5920
5921 if enabled pthreads; then
5922   check_func pthread_cancel $pthreads_extralibs
5923 fi
5924
5925 enabled pthreads &&
5926     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5927
5928 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5929 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5930 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5931
5932 # On some systems dynamic loading requires no extra linker flags
5933 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5934
5935 check_lib libm math.h sin -lm
5936
5937 atan2f_args=2
5938 copysign_args=2
5939 hypot_args=2
5940 ldexpf_args=2
5941 powf_args=2
5942
5943 for func in $MATH_FUNCS; do
5944     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5945 done
5946
5947 for func in $COMPLEX_FUNCS; do
5948     eval check_complexfunc $func \${${func}_args:-1}
5949 done
5950
5951 # these are off by default, so fail if requested and not available
5952 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5953 enabled cuvid             && { enabled cuda ||
5954                                die "ERROR: CUVID requires CUDA"; }
5955 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5956 enabled decklink          && { require_header DeckLinkAPI.h &&
5957                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5958 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5959 enabled frei0r            && require_header frei0r.h
5960 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5961 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5962 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5963 enabled ladspa            && require_header ladspa.h
5964 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5965 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5966 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5967 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5968 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5969                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5970                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5971 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5972 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5973 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5974 enabled libfdk_aac        && { use_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5975                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5976                                  warn "using libfdk without pkg-config"; } }
5977 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"
5978 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5979 enabled fontconfig        && enable libfontconfig
5980 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5981 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5982 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5983 enabled libgme            && { use_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5984                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5985 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5986                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5987                                done || die "ERROR: libgsm not found"; }
5988 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5989 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5990 # While it may appear that require is being used as a pkg-config
5991 # fallback for libmfx, it is actually being used to detect a different
5992 # installation route altogether.  If libmfx is installed via the Intel
5993 # Media SDK or Intel Media Server Studio, these don't come with
5994 # pkg-config support.  Instead, users should make sure that the build
5995 # can find the libraries and headers through other means.
5996 enabled libmfx            && { use_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5997                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5998 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5999 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
6000 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
6001 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
6002                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
6003                                die "ERROR: libnpp not found"; }
6004 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6005 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6006 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6007                                { use_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6008                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6009                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6010 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6011 enabled libopenjpeg       && { use_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6012                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6013 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6014 enabled libopus           && {
6015     enabled libopus_decoder && {
6016         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6017     }
6018     enabled libopus_encoder && {
6019         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6020     }
6021 }
6022 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6023 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6024 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6025 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6026 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6027 enabled libsmbclient      && { use_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6028                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6029 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6030 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6031 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6032 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
6033 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6034 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6035 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6036                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6037                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6038 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6039 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6040 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
6041 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6042 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6043                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6044
6045 enabled libvpx            && {
6046     enabled libvpx_vp8_decoder && {
6047         use_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6048             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
6049                 die "ERROR: libvpx decoder version must be >=0.9.1";
6050     }
6051     enabled libvpx_vp8_encoder && {
6052         use_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6053             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
6054                 die "ERROR: libvpx encoder version must be >=0.9.7";
6055     }
6056     enabled libvpx_vp9_decoder && {
6057         use_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6058             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
6059     }
6060     enabled libvpx_vp9_encoder && {
6061         use_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6062             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6063     }
6064     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6065         die "libvpx enabled but no supported decoders found"
6066     fi
6067 }
6068
6069 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6070 enabled libwebp           && {
6071     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6072     enabled libwebp_anim_encoder && use_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6073 enabled libx264           && { use_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6074                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6075                                  warn "using libx264 without pkg-config"; } } &&
6076                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6077                              { check_cpp_condition x264.h "X264_MPEG2" &&
6078                                enable libx262; }
6079 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6080                              require_cpp_condition x265.h "X265_BUILD >= 68"
6081 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6082 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6083 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
6084 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6085 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6086                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6087                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6088 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6089 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6090 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6091                                { ! enabled cross_compile &&
6092                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6093                                  add_ldflags -L/opt/vc/lib/ &&
6094                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6095                                die "ERROR: mmal not found" &&
6096                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6097 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6098                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6099                                die "ERROR: openal not found"; } &&
6100                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6101                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6102 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6103                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6104                                die "ERROR: opencl not found"; } &&
6105                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6106                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6107                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6108 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6109                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6110                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6111                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6112                                die "ERROR: opengl not found."
6113                              }
6114 enabled omx               && require_header OMX_Core.h
6115 enabled omx_rpi           && { check_header OMX_Core.h ||
6116                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6117                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6118 enabled openssl           && { use_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6119                                use_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6120                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6121                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6122                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6123                                die "ERROR: openssl not found"; }
6124 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
6125                                  die "ERROR : Rockchip MPP was not found."; } &&
6126                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
6127                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
6128                                { enabled libdrm ||
6129                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6130                              }
6131
6132 if enabled gcrypt; then
6133     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6134     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6135         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6136         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6137         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6138             die "ERROR: gcrypt not found"
6139         add_cflags $gcrypt_cflags
6140     else
6141         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6142     fi
6143 fi
6144
6145 if enabled sdl2; then
6146     SDL2_CONFIG="${cross_prefix}sdl2-config"
6147     if check_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6148         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6149             disable sdl2
6150     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6151         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6152         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6153         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6154         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6155         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6156             enable sdl2
6157     fi
6158     if test $target_os = "mingw32"; then
6159         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6160     fi
6161 fi
6162
6163 if enabled decklink; then
6164     case $target_os in
6165         mingw32*|mingw64*|win32|win64)
6166             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6167             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6168             ;;
6169     esac
6170 fi
6171
6172 enabled securetransport &&
6173     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6174     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6175         disable securetransport
6176
6177 enabled schannel &&
6178     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6179     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6180     schannel_extralibs="-lsecur32" ||
6181         disable schannel
6182
6183 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6184 enabled makeinfo \
6185     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6186     && enable makeinfo_html || disable makeinfo_html
6187 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6188 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6189 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6190 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6191
6192 # check V4L2 codecs available in the API
6193 check_header linux/fb.h
6194 check_header linux/videodev2.h
6195 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6196 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6197 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6198 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6199 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6200 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6201 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6202 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6203 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6204 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6205 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6206
6207 check_header sys/videoio.h
6208 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6209
6210 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6211 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6212 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6213 # w32api 3.12 had it defined wrong
6214 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6215
6216 check_type "dshow.h" IBaseFilter
6217
6218 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6219 { check_header dev/bktr/ioctl_meteor.h &&
6220   check_header dev/bktr/ioctl_bt848.h; } ||
6221 { check_header machine/ioctl_meteor.h &&
6222   check_header machine/ioctl_bt848.h; } ||
6223 { check_header dev/video/meteor/ioctl_meteor.h &&
6224   check_header dev/video/bktr/ioctl_bt848.h; } ||
6225 check_header dev/ic/bt8xx.h
6226
6227 if check_struct sys/soundcard.h audio_buf_info bytes; then
6228     enable_sanitized sys/soundcard.h
6229 else
6230     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6231     #include <sys/soundcard.h>
6232     audio_buf_info abc;
6233 EOF
6234 fi
6235 check_header soundcard.h
6236
6237 enabled alsa && use_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6238     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6239
6240 enabled libjack &&
6241     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6242
6243 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6244
6245 if enabled libcdio; then
6246     use_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6247     use_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6248     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6249     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6250     die "ERROR: No usable libcdio/cdparanoia found"
6251 fi
6252
6253 enabled libxcb && use_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6254     disable libxcb_shm libxcb_shape libxcb_xfixes
6255
6256 if enabled libxcb; then
6257     enabled libxcb_shm    && use_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6258     enabled libxcb_shape  && use_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6259     enabled libxcb_xfixes && use_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6260 fi
6261
6262 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6263
6264 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6265 # the desktop api partition
6266 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6267 #ifdef WINAPI_FAMILY
6268 #include <winapifamily.h>
6269 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6270 #error desktop, not uwp
6271 #else
6272 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6273 #endif
6274 #else
6275 #error no family set
6276 #endif
6277 EOF
6278
6279 enabled vaapi &&
6280     check_lib vaapi va/va.h vaInitialize -lva
6281
6282 enabled vaapi &&
6283     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6284     disable vaapi
6285
6286 enabled vaapi &&
6287     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6288
6289 enabled vaapi &&
6290     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6291
6292 enabled vaapi &&
6293     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6294     enable vaapi_1
6295
6296 enabled vdpau &&
6297     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6298     disable vdpau
6299
6300 enabled vdpau &&
6301     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6302
6303 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6304
6305 if enabled x86; then
6306     case $target_os in
6307         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6308             ;;
6309         *)
6310             disable cuda cuvid nvenc
6311             ;;
6312     esac
6313 else
6314     disable cuda cuvid nvenc
6315 fi
6316
6317 enabled nvenc &&
6318     check_cc -I$source_path <<EOF || disable nvenc
6319 #include "compat/nvenc/nvEncodeAPI.h"
6320 NV_ENCODE_API_FUNCTION_LIST flist;
6321 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6322 int main(void) { return 0; }
6323 EOF
6324
6325 # Funny iconv installations are not unusual, so check it after all flags have been set
6326 if enabled libc_iconv; then
6327     check_func_headers iconv.h iconv
6328 elif enabled iconv; then
6329     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6330 fi
6331
6332 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6333
6334 # add some useful compiler flags if supported
6335 check_cflags -Wdeclaration-after-statement
6336 check_cflags -Wall
6337 check_cflags -Wdisabled-optimization
6338 check_cflags -Wpointer-arith
6339 check_cflags -Wredundant-decls
6340 check_cflags -Wwrite-strings
6341 check_cflags -Wtype-limits
6342 check_cflags -Wundef
6343 check_cflags -Wmissing-prototypes
6344 check_cflags -Wno-pointer-to-int-cast
6345 check_cflags -Wstrict-prototypes
6346 check_cflags -Wempty-body
6347
6348 if enabled extra_warnings; then
6349     check_cflags -Wcast-qual
6350     check_cflags -Wextra
6351     check_cflags -Wpedantic
6352 fi
6353
6354 check_disable_warning(){
6355     warning_flag=-W${1#-Wno-}
6356     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6357 }
6358
6359 test_cflags -Werror=unused-command-line-argument &&
6360     append unknown_warning_flags "-Werror=unused-command-line-argument"
6361 test_cflags -Werror=unknown-warning-option &&
6362     append unknown_warning_flags "-Werror=unknown-warning-option"
6363
6364 check_disable_warning -Wno-parentheses
6365 check_disable_warning -Wno-switch
6366 check_disable_warning -Wno-format-zero-length
6367 check_disable_warning -Wno-pointer-sign
6368 check_disable_warning -Wno-unused-const-variable
6369 check_disable_warning -Wno-bool-operation
6370
6371 check_disable_warning_headers(){
6372     warning_flag=-W${1#-Wno-}
6373     test_cflags $warning_flag && add_cflags_headers $1
6374 }
6375
6376 check_disable_warning_headers -Wno-deprecated-declarations
6377 check_disable_warning_headers -Wno-unused-variable
6378
6379 check_cc <<EOF && enable blocks_extension
6380 void (^block)(void);
6381 EOF
6382
6383 # add some linker flags
6384 check_ldflags -Wl,--warn-common
6385 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6386 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6387 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6388 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6389
6390 # add some strip flags
6391 check_stripflags -x
6392
6393 enabled neon_clobber_test &&
6394     check_ldflags -Wl,--wrap,avcodec_open2              \
6395                   -Wl,--wrap,avcodec_decode_audio4      \
6396                   -Wl,--wrap,avcodec_decode_video2      \
6397                   -Wl,--wrap,avcodec_decode_subtitle2   \
6398                   -Wl,--wrap,avcodec_encode_audio2      \
6399                   -Wl,--wrap,avcodec_encode_video2      \
6400                   -Wl,--wrap,avcodec_encode_subtitle    \
6401                   -Wl,--wrap,avcodec_send_packet        \
6402                   -Wl,--wrap,avcodec_receive_packet     \
6403                   -Wl,--wrap,avcodec_send_frame         \
6404                   -Wl,--wrap,avcodec_receive_frame      \
6405                   -Wl,--wrap,swr_convert                \
6406                   -Wl,--wrap,avresample_convert ||
6407     disable neon_clobber_test
6408
6409 enabled xmm_clobber_test &&
6410     check_ldflags -Wl,--wrap,avcodec_open2              \
6411                   -Wl,--wrap,avcodec_decode_audio4      \
6412                   -Wl,--wrap,avcodec_decode_video2      \
6413                   -Wl,--wrap,avcodec_decode_subtitle2   \
6414                   -Wl,--wrap,avcodec_encode_audio2      \
6415                   -Wl,--wrap,avcodec_encode_video2      \
6416                   -Wl,--wrap,avcodec_encode_subtitle    \
6417                   -Wl,--wrap,avcodec_send_packet        \
6418                   -Wl,--wrap,avcodec_receive_packet     \
6419                   -Wl,--wrap,avcodec_send_frame         \
6420                   -Wl,--wrap,avcodec_receive_frame      \
6421                   -Wl,--wrap,swr_convert                \
6422                   -Wl,--wrap,avresample_convert         \
6423                   -Wl,--wrap,sws_scale ||
6424     disable xmm_clobber_test
6425
6426 check_ld "cc" <<EOF && enable proper_dce
6427 extern const int array[512];
6428 static inline int func(void) { return array[0]; }
6429 int main(void) { return 0; }
6430 EOF
6431
6432 if enabled proper_dce; then
6433     echo "X { local: *; };" > $TMPV
6434     if test_ldflags -Wl,${version_script},$TMPV; then
6435         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6436         check_cc <<EOF && enable symver_asm_label
6437 void ff_foo(void) __asm__ ("av_foo@VERSION");
6438 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6439 EOF
6440         check_cc <<EOF && enable symver_gnu_asm
6441 __asm__(".symver ff_foo,av_foo@VERSION");
6442 void ff_foo(void) {}
6443 EOF
6444     fi
6445 fi
6446
6447 if [ -z "$optflags" ]; then
6448     if enabled small; then
6449         optflags=$cflags_size
6450     elif enabled optimizations; then
6451         optflags=$cflags_speed
6452     else
6453         optflags=$cflags_noopt
6454     fi
6455 fi
6456
6457 if [ -z "$nvccflags" ]; then
6458     nvccflags=$nvccflags_default
6459 fi
6460
6461 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6462     nvccflags="$nvccflags -m64"
6463 else
6464     nvccflags="$nvccflags -m32"
6465 fi
6466
6467 check_optflags(){
6468     check_cflags "$@"
6469     enabled lto && check_ldflags "$@"
6470 }
6471
6472 check_optflags $optflags
6473 check_optflags -fno-math-errno
6474 check_optflags -fno-signed-zeros
6475
6476 if enabled lto; then
6477     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6478     check_cflags  -flto
6479     check_ldflags -flto $cpuflags
6480     disable inline_asm_direct_symbol_refs
6481 fi
6482
6483 enabled ftrapv && check_cflags -ftrapv
6484
6485 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6486 int x;
6487 EOF
6488
6489
6490 if enabled icc; then
6491     # Just warnings, no remarks
6492     check_cflags -w1
6493     # -wd: Disable following warnings
6494     # 144, 167, 556: -Wno-pointer-sign
6495     # 188: enumerated type mixed with another type
6496     # 1292: attribute "foo" ignored
6497     # 1419: external declaration in primary source file
6498     # 10006: ignoring unknown option -fno-signed-zeros
6499     # 10148: ignoring unknown option -Wno-parentheses
6500     # 10156: ignoring option '-W'; no argument required
6501     # 13200: No EMMS instruction before call to function
6502     # 13203: No EMMS instruction before return from function
6503     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6504     # 11030: Warning unknown option --as-needed
6505     # 10156: ignoring option '-export'; no argument required
6506     check_ldflags -wd10156,11030
6507     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6508     enable ebp_available
6509     # The test above does not test linking
6510     enabled lto && disable symver_asm_label
6511     if enabled x86_32; then
6512         icc_version=$($cc -dumpversion)
6513         test ${icc_version%%.*} -ge 11 &&
6514             check_cflags -falign-stack=maintain-16-byte ||
6515             disable aligned_stack
6516     fi
6517 elif enabled ccc; then
6518     # disable some annoying warnings
6519     add_cflags -msg_disable bitnotint
6520     add_cflags -msg_disable mixfuncvoid
6521     add_cflags -msg_disable nonstandcast
6522     add_cflags -msg_disable unsupieee
6523 elif enabled gcc; then
6524     check_optflags -fno-tree-vectorize
6525     check_cflags -Werror=format-security
6526     check_cflags -Werror=implicit-function-declaration
6527     check_cflags -Werror=missing-prototypes
6528     check_cflags -Werror=return-type
6529     check_cflags -Werror=vla
6530     check_cflags -Wformat
6531     check_cflags -fdiagnostics-color=auto
6532     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6533 elif enabled llvm_gcc; then
6534     check_cflags -mllvm -stack-alignment=16
6535 elif enabled clang; then
6536     check_cflags -mllvm -stack-alignment=16
6537     check_cflags -mstack-alignment=16
6538     check_cflags -Qunused-arguments
6539     check_cflags -Werror=implicit-function-declaration
6540     check_cflags -Werror=missing-prototypes
6541     check_cflags -Werror=return-type
6542 elif enabled cparser; then
6543     add_cflags -Wno-missing-variable-declarations
6544     add_cflags -Wno-empty-statement
6545 elif enabled armcc; then
6546     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6547     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6548     # 2523: use of inline assembly is deprecated
6549     add_cflags -W${armcc_opt},--diag_suppress=2523
6550     add_cflags -W${armcc_opt},--diag_suppress=1207
6551     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6552     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6553     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6554     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6555 elif enabled tms470; then
6556     add_cflags -pds=824 -pds=837
6557     disable inline_asm
6558 elif enabled pathscale; then
6559     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6560     disable inline_asm
6561 elif enabled_any msvc icl; then
6562     enabled x86_32 && disable aligned_stack
6563     enabled_all x86_32 debug && add_cflags -Oy-
6564     enabled debug && add_ldflags -debug
6565     enable pragma_deprecated
6566     if enabled icl; then
6567         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6568         # (correctly) on icl 13.x.
6569         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6570             add_cflags -Qansi-alias
6571         # Some inline asm is not compilable in debug
6572         if enabled debug; then
6573             disable ebp_available
6574             disable ebx_available
6575         fi
6576     fi
6577     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6578     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6579     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6580     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6581     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6582     # MSVC 2013 and newer can handle it fine.
6583     # If this declspec fails, force including stdlib.h before the restrict redefinition
6584     # happens in config.h.
6585     if [ $_restrict != restrict ]; then
6586         check_cc <<EOF || add_cflags -FIstdlib.h
6587 __declspec($_restrict) void* foo(int);
6588 EOF
6589     fi
6590     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6591     # Issue has been fixed in MSVC v19.00.24218.
6592     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6593         check_cflags -d2SSAOptimizer-
6594     # enable utf-8 source processing on VS2015 U2 and newer
6595     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6596         add_cflags -utf-8
6597 fi
6598
6599 for pfx in "" host_; do
6600     varname=${pfx%_}cc_type
6601     eval "type=\$$varname"
6602     if [ "$type" = "msvc" ]; then
6603         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6604 static inline int foo(int a) { return a; }
6605 EOF
6606     fi
6607 done
6608
6609 case $as_type in
6610     clang)
6611         add_asflags -Qunused-arguments
6612     ;;
6613 esac
6614
6615 case $ld_type in
6616     clang)
6617         check_ldflags -Qunused-arguments
6618     ;;
6619 esac
6620
6621 case $target_os in
6622     osf1)
6623         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6624     ;;
6625 esac
6626
6627 enable frame_thread_encoder
6628
6629 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6630
6631 check_deps $CONFIG_LIST       \
6632            $CONFIG_EXTRA      \
6633            $HAVE_LIST         \
6634            $ALL_COMPONENTS    \
6635
6636 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"
6637
6638
6639 if test $target_os = "haiku"; then
6640     disable memalign
6641     disable posix_memalign
6642 fi
6643
6644 flatten_extralibs(){
6645     unset nested_entries
6646     list_name=$1
6647     eval list=\$${1}
6648     for entry in $list; do
6649         entry_copy=$entry
6650         resolve entry_copy
6651         append nested_entries $(filter '*_extralibs' $entry_copy)
6652         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6653         eval $entry="\$flat_entries"
6654     done
6655     append $list_name "$nested_entries"
6656
6657     resolve nested_entries
6658     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6659         flatten_extralibs $list_name
6660     fi
6661 }
6662
6663 for linkunit in $LIBRARY_LIST; do
6664     unset current_extralibs
6665     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6666     for comp in ${components}; do
6667         enabled $comp || continue
6668         comp_extralibs="${comp}_extralibs"
6669         append current_extralibs $comp_extralibs
6670     done
6671     eval prepend ${linkunit}_extralibs $current_extralibs
6672 done
6673
6674 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6675     flatten_extralibs ${linkunit}_extralibs
6676     unique  ${linkunit}_extralibs
6677     resolve ${linkunit}_extralibs
6678     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
6679 done
6680
6681 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6682
6683 for thread in $THREADS_LIST; do
6684     if enabled $thread; then
6685         test -n "$thread_type" &&
6686             die "ERROR: Only one thread type must be selected." ||
6687             thread_type="$thread"
6688     fi
6689 done
6690
6691 if disabled stdatomic_h; then
6692     if enabled atomics_gcc; then
6693         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6694     elif enabled atomics_win32; then
6695         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6696     elif enabled atomics_suncc; then
6697         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6698     elif enabled pthreads; then
6699         add_compat atomics/pthread/stdatomic.o
6700         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6701     else
6702         enabled threads && die "Threading is enabled, but no atomics are available"
6703         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6704     fi
6705 fi
6706
6707 # Check if requested libraries were found.
6708 for lib in $AUTODETECT_LIBS; do
6709     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6710 done
6711
6712 enabled zlib && add_cppflags -DZLIB_CONST
6713
6714 # conditional library dependencies, in linking order
6715 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6716 enabled afir_filter         && prepend avfilter_deps "avcodec"
6717 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6718 enabled aresample_filter    && prepend avfilter_deps "swresample"
6719 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6720 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6721 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6722 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6723 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6724 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6725 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6726 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6727 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6728 enabled pan_filter          && prepend avfilter_deps "swresample"
6729 enabled pp_filter           && prepend avfilter_deps "postproc"
6730 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6731 enabled resample_filter && prepend avfilter_deps "avresample"
6732 enabled sab_filter          && prepend avfilter_deps "swscale"
6733 enabled scale_filter    && prepend avfilter_deps "swscale"
6734 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6735 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6736 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6737 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6738 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6739 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6740 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6741 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6742 enabled spp_filter          && prepend avfilter_deps "avcodec"
6743 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6744 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6745 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6746
6747 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6748
6749 #FIXME
6750 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6751
6752 enabled opus_decoder    && prepend avcodec_deps "swresample"
6753
6754 expand_deps(){
6755     lib_deps=${1}_deps
6756     eval "deps=\$$lib_deps"
6757     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6758     unique $lib_deps
6759 }
6760
6761 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6762 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6763
6764 map 'expand_deps $v' $LIBRARY_LIST
6765
6766 license="LGPL version 2.1 or later"
6767 if enabled nonfree; then
6768     license="nonfree and unredistributable"
6769 elif enabled gplv3; then
6770     license="GPL version 3 or later"
6771 elif enabled lgplv3; then
6772     license="LGPL version 3 or later"
6773 elif enabled gpl; then
6774     license="GPL version 2 or later"
6775 fi
6776
6777 if test "$quiet" != "yes"; then
6778
6779 echo "install prefix            $prefix"
6780 echo "source path               $source_path"
6781 echo "C compiler                $cc"
6782 echo "C library                 $libc_type"
6783 if test "$host_cc" != "$cc"; then
6784     echo "host C compiler           $host_cc"
6785     echo "host C library            $host_libc_type"
6786 fi
6787 echo "ARCH                      $arch ($cpu)"
6788 if test "$build_suffix" != ""; then
6789     echo "build suffix              $build_suffix"
6790 fi
6791 if test "$progs_suffix" != ""; then
6792     echo "progs suffix              $progs_suffix"
6793 fi
6794 if test "$extra_version" != ""; then
6795     echo "version string suffix     $extra_version"
6796 fi
6797 echo "big-endian                ${bigendian-no}"
6798 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6799 if enabled x86; then
6800     echo "standalone assembly       ${x86asm-no}"
6801     echo "x86 assembler             ${x86asmexe}"
6802     echo "MMX enabled               ${mmx-no}"
6803     echo "MMXEXT enabled            ${mmxext-no}"
6804     echo "3DNow! enabled            ${amd3dnow-no}"
6805     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6806     echo "SSE enabled               ${sse-no}"
6807     echo "SSSE3 enabled             ${ssse3-no}"
6808     echo "AESNI enabled             ${aesni-no}"
6809     echo "AVX enabled               ${avx-no}"
6810     echo "AVX2 enabled              ${avx2-no}"
6811     echo "XOP enabled               ${xop-no}"
6812     echo "FMA3 enabled              ${fma3-no}"
6813     echo "FMA4 enabled              ${fma4-no}"
6814     echo "i686 features enabled     ${i686-no}"
6815     echo "CMOV is fast              ${fast_cmov-no}"
6816     echo "EBX available             ${ebx_available-no}"
6817     echo "EBP available             ${ebp_available-no}"
6818 fi
6819 if enabled aarch64; then
6820     echo "NEON enabled              ${neon-no}"
6821     echo "VFP enabled               ${vfp-no}"
6822 fi
6823 if enabled arm; then
6824     echo "ARMv5TE enabled           ${armv5te-no}"
6825     echo "ARMv6 enabled             ${armv6-no}"
6826     echo "ARMv6T2 enabled           ${armv6t2-no}"
6827     echo "VFP enabled               ${vfp-no}"
6828     echo "NEON enabled              ${neon-no}"
6829     echo "THUMB enabled             ${thumb-no}"
6830 fi
6831 if enabled mips; then
6832     echo "MIPS FPU enabled          ${mipsfpu-no}"
6833     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6834     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6835     echo "MIPS MSA enabled          ${msa-no}"
6836     echo "LOONGSON MMI enabled      ${mmi-no}"
6837 fi
6838 if enabled ppc; then
6839     echo "AltiVec enabled           ${altivec-no}"
6840     echo "VSX enabled               ${vsx-no}"
6841     echo "POWER8 enabled            ${power8-no}"
6842     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6843     echo "dcbzl available           ${dcbzl-no}"
6844 fi
6845 echo "debug symbols             ${debug-no}"
6846 echo "strip symbols             ${stripping-no}"
6847 echo "optimize for size         ${small-no}"
6848 echo "optimizations             ${optimizations-no}"
6849 echo "static                    ${static-no}"
6850 echo "shared                    ${shared-no}"
6851 echo "postprocessing support    ${postproc-no}"
6852 echo "network support           ${network-no}"
6853 echo "threading support         ${thread_type-no}"
6854 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6855 echo "texi2html enabled         ${texi2html-no}"
6856 echo "perl enabled              ${perl-no}"
6857 echo "pod2man enabled           ${pod2man-no}"
6858 echo "makeinfo enabled          ${makeinfo-no}"
6859 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6860 test -n "$random_seed" &&
6861     echo "random seed               ${random_seed}"
6862 echo
6863
6864 echo "External libraries:"
6865 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6866 echo
6867
6868 echo "External libraries providing hardware acceleration:"
6869 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6870 echo
6871
6872 echo "Libraries:"
6873 print_enabled '' $LIBRARY_LIST | print_in_columns
6874 echo
6875
6876 echo "Programs:"
6877 print_enabled '' $PROGRAM_LIST | print_in_columns
6878 echo
6879
6880 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6881     echo "Enabled ${type}s:"
6882     eval list=\$$(toupper $type)_LIST
6883     print_enabled '_*' $list | print_in_columns
6884     echo
6885 done
6886
6887 if test -n "$ignore_tests"; then
6888     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6889     echo "Ignored FATE tests:"
6890     echo $ignore_tests | print_in_columns
6891     echo
6892 fi
6893
6894 echo "License: $license"
6895
6896 echo "Creating configuration files ..."
6897
6898 fi # test "$quiet" != "yes"
6899
6900 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6901
6902 enabled stripping || strip="echo skipping strip"
6903 enabled stripping || striptype=""
6904
6905 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6906
6907 cat > ffbuild/config.mak <<EOF
6908 # Automatically generated by configure - do not modify!
6909 ifndef FFMPEG_CONFIG_MAK
6910 FFMPEG_CONFIG_MAK=1
6911 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6912 prefix=$prefix
6913 LIBDIR=\$(DESTDIR)$libdir
6914 SHLIBDIR=\$(DESTDIR)$shlibdir
6915 INCDIR=\$(DESTDIR)$incdir
6916 BINDIR=\$(DESTDIR)$bindir
6917 DATADIR=\$(DESTDIR)$datadir
6918 DOCDIR=\$(DESTDIR)$docdir
6919 MANDIR=\$(DESTDIR)$mandir
6920 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6921 INSTALL_NAME_DIR=$install_name_dir
6922 SRC_PATH=$source_path
6923 SRC_LINK=$source_link
6924 ifndef MAIN_MAKEFILE
6925 SRC_PATH:=\$(SRC_PATH:.%=..%)
6926 endif
6927 CC_IDENT=$cc_ident
6928 ARCH=$arch
6929 INTRINSICS=$intrinsics
6930 CC=$cc
6931 CXX=$cxx
6932 AS=$as
6933 OBJCC=$objcc
6934 LD=$ld
6935 DEPCC=$dep_cc
6936 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6937 DEPAS=$as
6938 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6939 X86ASM=$x86asmexe
6940 DEPX86ASM=$x86asmexe
6941 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6942 AR=$ar
6943 ARFLAGS=$arflags
6944 AR_O=$ar_o
6945 RANLIB=$ranlib
6946 STRIP=$strip
6947 STRIPTYPE=$striptype
6948 NVCC=$nvcc
6949 CP=cp -p
6950 LN_S=$ln_s
6951 CPPFLAGS=$CPPFLAGS
6952 CFLAGS=$CFLAGS
6953 CXXFLAGS=$CXXFLAGS
6954 OBJCFLAGS=$OBJCFLAGS
6955 ASFLAGS=$ASFLAGS
6956 NVCCFLAGS=$nvccflags
6957 AS_C=$AS_C
6958 AS_O=$AS_O
6959 OBJCC_C=$OBJCC_C
6960 OBJCC_E=$OBJCC_E
6961 OBJCC_O=$OBJCC_O
6962 CC_C=$CC_C
6963 CC_E=$CC_E
6964 CC_O=$CC_O
6965 CXX_C=$CXX_C
6966 CXX_O=$CXX_O
6967 NVCC_C=$NVCC_C
6968 NVCC_O=$NVCC_O
6969 LD_O=$LD_O
6970 X86ASM_O=$X86ASM_O
6971 LD_LIB=$LD_LIB
6972 LD_PATH=$LD_PATH
6973 DLLTOOL=$dlltool
6974 WINDRES=$windres
6975 DEPWINDRES=$dep_cc
6976 DOXYGEN=$doxygen
6977 LDFLAGS=$LDFLAGS
6978 LDEXEFLAGS=$LDEXEFLAGS
6979 LDLIBFLAGS=$LDLIBFLAGS
6980 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6981 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6982 X86ASMFLAGS=$X86ASMFLAGS
6983 BUILDSUF=$build_suffix
6984 PROGSSUF=$progs_suffix
6985 FULLNAME=$FULLNAME
6986 LIBPREF=$LIBPREF
6987 LIBSUF=$LIBSUF
6988 LIBNAME=$LIBNAME
6989 SLIBPREF=$SLIBPREF
6990 SLIBSUF=$SLIBSUF
6991 EXESUF=$EXESUF
6992 EXTRA_VERSION=$extra_version
6993 CCDEP=$CCDEP
6994 CXXDEP=$CXXDEP
6995 CCDEP_FLAGS=$CCDEP_FLAGS
6996 ASDEP=$ASDEP
6997 ASDEP_FLAGS=$ASDEP_FLAGS
6998 X86ASMDEP=$X86ASMDEP
6999 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7000 CC_DEPFLAGS=$CC_DEPFLAGS
7001 AS_DEPFLAGS=$AS_DEPFLAGS
7002 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7003 HOSTCC=$host_cc
7004 HOSTLD=$host_ld
7005 HOSTCFLAGS=$host_cflags
7006 HOSTCPPFLAGS=$host_cppflags
7007 HOSTEXESUF=$HOSTEXESUF
7008 HOSTLDFLAGS=$host_ldflags
7009 HOSTEXTRALIBS=$host_extralibs
7010 DEPHOSTCC=$host_cc
7011 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7012 HOSTCCDEP=$HOSTCCDEP
7013 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7014 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7015 HOSTCC_C=$HOSTCC_C
7016 HOSTCC_O=$HOSTCC_O
7017 HOSTLD_O=$HOSTLD_O
7018 TARGET_EXEC=$target_exec $target_exec_args
7019 TARGET_PATH=$target_path
7020 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7021 CFLAGS-ffplay=${sdl2_cflags}
7022 CFLAGS_HEADERS=$CFLAGS_HEADERS
7023 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7024 EXTRALIBS=$extralibs
7025 COMPAT_OBJS=$compat_objs
7026 INSTALL=$install
7027 LIBTARGET=${LIBTARGET}
7028 SLIBNAME=${SLIBNAME}
7029 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7030 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7031 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7032 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7033 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7034 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7035 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7036 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7037 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7038 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7039 NOREDZONE_FLAGS=$noredzone_flags
7040 LIBFUZZER_PATH=$libfuzzer_path
7041 IGNORE_TESTS=$ignore_tests
7042 EOF
7043
7044 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7045
7046 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7047     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7048 done
7049
7050 cat > $TMPH <<EOF
7051 /* Automatically generated by configure - do not modify! */
7052 #ifndef FFMPEG_CONFIG_H
7053 #define FFMPEG_CONFIG_H
7054 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7055 #define FFMPEG_LICENSE "$(c_escape $license)"
7056 #define CONFIG_THIS_YEAR 2017
7057 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7058 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7059 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7060 #define av_restrict $_restrict
7061 #define EXTERN_PREFIX "${extern_prefix}"
7062 #define EXTERN_ASM ${extern_prefix}
7063 #define BUILDSUF "$build_suffix"
7064 #define SLIBSUF "$SLIBSUF"
7065 #define HAVE_MMX2 HAVE_MMXEXT
7066 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7067 EOF
7068
7069 test -n "$assert_level" &&
7070     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7071
7072 test -n "$malloc_prefix" &&
7073     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7074
7075 if enabled x86asm; then
7076     append config_files $TMPASM
7077     printf '' >$TMPASM
7078 fi
7079
7080 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7081
7082
7083 mkdir -p doc
7084 mkdir -p tests
7085 mkdir -p tests/api
7086 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7087
7088 print_config ARCH_   "$config_files" $ARCH_LIST
7089 print_config HAVE_   "$config_files" $HAVE_LIST
7090 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7091                                      $CONFIG_EXTRA      \
7092                                      $ALL_COMPONENTS    \
7093
7094 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7095 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7096
7097 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7098 cp_if_changed $TMPH config.h
7099 touch ffbuild/.config
7100
7101 enabled x86asm && cp_if_changed $TMPASM config.asm
7102
7103 cat > $TMPH <<EOF
7104 /* Generated by ffconf */
7105 #ifndef AVUTIL_AVCONFIG_H
7106 #define AVUTIL_AVCONFIG_H
7107 EOF
7108
7109 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7110
7111 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7112
7113 cp_if_changed $TMPH libavutil/avconfig.h
7114
7115 # generate the lists of enabled components
7116 print_enabled_components(){
7117     file=$1
7118     struct_name=$2
7119     name=$3
7120     shift 3
7121     echo "static const $struct_name * const $name[] = {" > $TMPH
7122     for c in $*; do
7123         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7124     done
7125     echo "    NULL };" >> $TMPH
7126     cp_if_changed $TMPH $file
7127 }
7128
7129 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7130 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7131
7132 if test -n "$WARNINGS"; then
7133     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7134     enabled fatal_warnings && exit 1
7135 fi
7136
7137 # Settings for pkg-config files
7138
7139 cat > ffbuild/config.sh <<EOF
7140 # Automatically generated by configure - do not modify!
7141 shared=$shared
7142 build_suffix=$build_suffix
7143 prefix=$prefix
7144 libdir=$libdir
7145 incdir=$incdir
7146 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7147 source_path=${source_path}
7148 LIBPREF=${LIBPREF}
7149 LIBSUF=${LIBSUF}
7150 extralibs_avutil="$avutil_extralibs"
7151 extralibs_avcodec="$avcodec_extralibs"
7152 extralibs_avformat="$avformat_extralibs"
7153 extralibs_avdevice="$avdevice_extralibs"
7154 extralibs_avfilter="$avfilter_extralibs"
7155 extralibs_avresample="$avresample_extralibs"
7156 extralibs_postproc="$postproc_extralibs"
7157 extralibs_swscale="$swscale_extralibs"
7158 extralibs_swresample="$swresample_extralibs"
7159 EOF
7160
7161 for lib in $LIBRARY_LIST; do
7162     lib_deps="$(eval echo \$${lib}_deps)"
7163     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7164 done