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_dn_directive
2056     as_fpu_directive
2057     as_func
2058     as_object_arch
2059     asm_mod_q
2060     attribute_may_alias
2061     attribute_packed
2062     blocks_extension
2063     ebp_available
2064     ebx_available
2065     gnu_as
2066     gnu_windres
2067     ibm_asm
2068     inline_asm_direct_symbol_refs
2069     inline_asm_labels
2070     inline_asm_nonlocal_labels
2071     pragma_deprecated
2072     rsync_contimeout
2073     symver_asm_label
2074     symver_gnu_asm
2075     vfp_args
2076     xform_asm
2077     xmm_clobbers
2078 "
2079
2080 TYPES_LIST="
2081     CONDITION_VARIABLE_Ptr
2082     kCMVideoCodecType_HEVC
2083     socklen_t
2084     struct_addrinfo
2085     struct_group_source_req
2086     struct_ip_mreq_source
2087     struct_ipv6_mreq
2088     struct_msghdr_msg_flags
2089     struct_pollfd
2090     struct_rusage_ru_maxrss
2091     struct_sctp_event_subscribe
2092     struct_sockaddr_in6
2093     struct_sockaddr_sa_len
2094     struct_sockaddr_storage
2095     struct_stat_st_mtim_tv_nsec
2096     struct_v4l2_frmivalenum_discrete
2097 "
2098
2099 HAVE_LIST="
2100     $ARCH_EXT_LIST
2101     $(add_suffix _external $ARCH_EXT_LIST)
2102     $(add_suffix _inline   $ARCH_EXT_LIST)
2103     $ARCH_FEATURES
2104     $ATOMICS_LIST
2105     $BUILTIN_LIST
2106     $COMPLEX_FUNCS
2107     $HAVE_LIST_CMDLINE
2108     $HAVE_LIST_PUB
2109     $HEADERS_LIST
2110     $INTRINSICS_LIST
2111     $MATH_FUNCS
2112     $SYSTEM_FUNCS
2113     $THREADS_LIST
2114     $TOOLCHAIN_FEATURES
2115     $TYPES_LIST
2116     atomics_native
2117     dos_paths
2118     libc_msvcrt
2119     makeinfo
2120     makeinfo_html
2121     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2122     perl
2123     pod2man
2124     section_data_rel_ro
2125     texi2html
2126     threads
2127     uwp
2128     vaapi_drm
2129     vaapi_x11
2130     vdpau_x11
2131     winrt
2132 "
2133
2134 # options emitted with CONFIG_ prefix but not available on the command line
2135 CONFIG_EXTRA="
2136     aandcttables
2137     ac3dsp
2138     adts_header
2139     audio_frame_queue
2140     audiodsp
2141     blockdsp
2142     bswapdsp
2143     cabac
2144     cbs
2145     cbs_h264
2146     cbs_h265
2147     cbs_mpeg2
2148     dirac_parse
2149     dvprofile
2150     exif
2151     faandct
2152     faanidct
2153     fdctdsp
2154     flacdsp
2155     fmtconvert
2156     frame_thread_encoder
2157     g722dsp
2158     golomb
2159     gplv3
2160     h263dsp
2161     h264chroma
2162     h264dsp
2163     h264parse
2164     h264pred
2165     h264qpel
2166     hevcparse
2167     hpeldsp
2168     huffman
2169     huffyuvdsp
2170     huffyuvencdsp
2171     idctdsp
2172     iirfilter
2173     mdct15
2174     intrax8
2175     iso_media
2176     ividsp
2177     jpegtables
2178     lgplv3
2179     libx262
2180     llauddsp
2181     llviddsp
2182     llvidencdsp
2183     lpc
2184     lzf
2185     me_cmp
2186     mpeg_er
2187     mpegaudio
2188     mpegaudiodsp
2189     mpegaudioheader
2190     mpegvideo
2191     mpegvideoenc
2192     mss34dsp
2193     pixblockdsp
2194     qpeldsp
2195     qsv
2196     qsvdec
2197     qsvenc
2198     rangecoder
2199     riffdec
2200     riffenc
2201     rtpdec
2202     rtpenc_chain
2203     rv34dsp
2204     sinewin
2205     snappy
2206     srtp
2207     startcode
2208     texturedsp
2209     texturedspenc
2210     tpeldsp
2211     vaapi_1
2212     vaapi_encode
2213     vc1dsp
2214     videodsp
2215     vp3dsp
2216     vp56dsp
2217     vp8dsp
2218     wma_freqs
2219     wmv2dsp
2220 "
2221
2222 CMDLINE_SELECT="
2223     $ARCH_EXT_LIST
2224     $CONFIG_LIST
2225     $HAVE_LIST_CMDLINE
2226     $THREADS_LIST
2227     asm
2228     cross_compile
2229     debug
2230     extra_warnings
2231     logging
2232     lto
2233     optimizations
2234     rpath
2235     stripping
2236 "
2237
2238 PATHS_LIST="
2239     bindir
2240     datadir
2241     docdir
2242     incdir
2243     libdir
2244     mandir
2245     pkgconfigdir
2246     prefix
2247     shlibdir
2248     install_name_dir
2249 "
2250
2251 CMDLINE_SET="
2252     $PATHS_LIST
2253     ar
2254     arch
2255     as
2256     assert_level
2257     build_suffix
2258     cc
2259     objcc
2260     cpu
2261     cross_prefix
2262     custom_allocator
2263     cxx
2264     dep_cc
2265     doxygen
2266     env
2267     extra_version
2268     gas
2269     host_cc
2270     host_cflags
2271     host_extralibs
2272     host_ld
2273     host_ldflags
2274     host_os
2275     ignore_tests
2276     install
2277     ld
2278     ln_s
2279     logfile
2280     malloc_prefix
2281     nm
2282     optflags
2283     nvccflags
2284     pkg_config
2285     pkg_config_flags
2286     progs_suffix
2287     random_seed
2288     ranlib
2289     samples
2290     strip
2291     sws_max_filter_size
2292     sysinclude
2293     sysroot
2294     target_exec
2295     target_os
2296     target_path
2297     target_samples
2298     tempprefix
2299     toolchain
2300     valgrind
2301     x86asmexe
2302 "
2303
2304 CMDLINE_APPEND="
2305     extra_cflags
2306     extra_cxxflags
2307     extra_objcflags
2308     host_cppflags
2309 "
2310
2311 # code dependency declarations
2312
2313 # architecture extensions
2314
2315 armv5te_deps="arm"
2316 armv6_deps="arm"
2317 armv6t2_deps="arm"
2318 armv8_deps="aarch64"
2319 neon_deps_any="aarch64 arm"
2320 intrinsics_neon_deps="neon"
2321 vfp_deps_any="aarch64 arm"
2322 vfpv3_deps="vfp"
2323 setend_deps="arm"
2324
2325 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2326
2327 loongson2_deps="mips"
2328 loongson3_deps="mips"
2329 mipsfpu_deps="mips"
2330 mipsdsp_deps="mips"
2331 mipsdspr2_deps="mips"
2332 mips32r2_deps="mips"
2333 mips32r5_deps="mips"
2334 mips32r6_deps="mips"
2335 mips64r2_deps="mips"
2336 mips64r6_deps="mips"
2337 msa_deps="mipsfpu"
2338 mmi_deps="mips"
2339
2340 altivec_deps="ppc"
2341 dcbzl_deps="ppc"
2342 ldbrx_deps="ppc"
2343 ppc4xx_deps="ppc"
2344 vsx_deps="altivec"
2345 power8_deps="vsx"
2346
2347 cpunop_deps="i686"
2348 x86_64_select="i686"
2349 x86_64_suggest="fast_cmov"
2350
2351 amd3dnow_deps="mmx"
2352 amd3dnowext_deps="amd3dnow"
2353 i686_deps="x86"
2354 mmx_deps="x86"
2355 mmxext_deps="mmx"
2356 sse_deps="mmxext"
2357 sse2_deps="sse"
2358 sse3_deps="sse2"
2359 ssse3_deps="sse3"
2360 sse4_deps="ssse3"
2361 sse42_deps="sse4"
2362 aesni_deps="sse42"
2363 avx_deps="sse42"
2364 xop_deps="avx"
2365 fma3_deps="avx"
2366 fma4_deps="avx"
2367 avx2_deps="avx"
2368
2369 mmx_external_deps="x86asm"
2370 mmx_inline_deps="inline_asm"
2371 mmx_suggest="mmx_external mmx_inline"
2372
2373 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2374     eval dep=\$${ext}_deps
2375     eval ${ext}_external_deps='"${dep}_external"'
2376     eval ${ext}_inline_deps='"${dep}_inline"'
2377     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2378 done
2379
2380 aligned_stack_if_any="aarch64 ppc x86"
2381 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2382 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2383 fast_unaligned_if_any="aarch64 ppc x86"
2384 simd_align_16_if_any="altivec neon sse"
2385 simd_align_32_if_any="avx"
2386
2387 # system capabilities
2388 symver_if_any="symver_asm_label symver_gnu_asm"
2389 valgrind_backtrace_conflict="optimizations"
2390 valgrind_backtrace_deps="valgrind_valgrind_h"
2391
2392 # threading support
2393 atomics_gcc_if="sync_val_compare_and_swap"
2394 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2395 atomics_win32_if="MemoryBarrier"
2396 atomics_native_if_any="$ATOMICS_LIST"
2397 w32threads_deps="atomics_native"
2398 threads_if_any="$THREADS_LIST"
2399
2400 # subsystems
2401 cbs_h264_select="cbs golomb"
2402 cbs_h265_select="cbs golomb"
2403 cbs_mpeg2_select="cbs"
2404 dct_select="rdft"
2405 dirac_parse_select="golomb"
2406 error_resilience_select="me_cmp"
2407 faandct_deps="faan fdctdsp"
2408 faanidct_deps="faan idctdsp"
2409 h264dsp_select="startcode"
2410 hevcparse_select="golomb"
2411 frame_thread_encoder_deps="encoders threads"
2412 intrax8_select="blockdsp idctdsp"
2413 mdct_select="fft"
2414 mdct15_select="fft"
2415 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2416 mpeg_er_select="error_resilience"
2417 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2418 mpegaudiodsp_select="dct"
2419 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2420 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2421 vc1dsp_select="h264chroma qpeldsp startcode"
2422 rdft_select="fft"
2423
2424 # decoders / encoders
2425 aac_decoder_select="adts_header mdct15 mdct sinewin"
2426 aac_fixed_decoder_select="mdct sinewin"
2427 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2428 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2429 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2430 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2431 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2432 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2433 adpcm_g722_decoder_select="g722dsp"
2434 adpcm_g722_encoder_select="g722dsp"
2435 aic_decoder_select="golomb idctdsp"
2436 alac_encoder_select="lpc"
2437 als_decoder_select="bswapdsp"
2438 amrnb_decoder_select="lsp"
2439 amrwb_decoder_select="lsp"
2440 amv_decoder_select="sp5x_decoder exif"
2441 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2442 ape_decoder_select="bswapdsp llauddsp"
2443 apng_decoder_select="zlib"
2444 apng_encoder_select="llvidencdsp zlib"
2445 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2446 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2447 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2448 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2449 atrac1_decoder_select="mdct sinewin"
2450 atrac3_decoder_select="mdct"
2451 atrac3p_decoder_select="mdct sinewin"
2452 avrn_decoder_select="exif jpegtables"
2453 bink_decoder_select="blockdsp hpeldsp"
2454 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2455 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2456 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2457 clearvideo_decoder_select="idctdsp"
2458 cllc_decoder_select="bswapdsp"
2459 comfortnoise_encoder_select="lpc"
2460 cook_decoder_select="audiodsp mdct sinewin"
2461 cscd_decoder_select="lzo"
2462 cscd_decoder_suggest="zlib"
2463 dca_decoder_select="mdct"
2464 dds_decoder_select="texturedsp"
2465 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2466 dnxhd_decoder_select="blockdsp idctdsp"
2467 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2468 dolby_e_decoder_select="mdct"
2469 dvvideo_decoder_select="dvprofile idctdsp"
2470 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2471 dxa_decoder_select="zlib"
2472 dxv_decoder_select="lzf texturedsp"
2473 eac3_decoder_select="ac3_decoder"
2474 eac3_encoder_select="ac3_encoder"
2475 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2476 eatgq_decoder_select="aandcttables"
2477 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2478 exr_decoder_select="zlib"
2479 ffv1_decoder_select="rangecoder"
2480 ffv1_encoder_select="rangecoder"
2481 ffvhuff_decoder_select="huffyuv_decoder"
2482 ffvhuff_encoder_select="huffyuv_encoder"
2483 fic_decoder_select="golomb"
2484 flac_decoder_select="flacdsp"
2485 flac_encoder_select="bswapdsp flacdsp lpc"
2486 flashsv2_decoder_select="zlib"
2487 flashsv2_encoder_select="zlib"
2488 flashsv_decoder_select="zlib"
2489 flashsv_encoder_select="zlib"
2490 flv_decoder_select="h263_decoder"
2491 flv_encoder_select="h263_encoder"
2492 fourxm_decoder_select="blockdsp bswapdsp"
2493 fraps_decoder_select="bswapdsp huffman"
2494 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2495 g729_decoder_select="audiodsp"
2496 h261_decoder_select="mpegvideo"
2497 h261_encoder_select="aandcttables mpegvideoenc"
2498 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2499 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2500 h263i_decoder_select="h263_decoder"
2501 h263p_decoder_select="h263_decoder"
2502 h263p_encoder_select="h263_encoder"
2503 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2504 h264_decoder_suggest="error_resilience"
2505 hap_decoder_select="snappy texturedsp"
2506 hap_encoder_deps="libsnappy"
2507 hap_encoder_select="texturedspenc"
2508 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2509 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2510 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2511 iac_decoder_select="imc_decoder"
2512 imc_decoder_select="bswapdsp fft mdct sinewin"
2513 indeo3_decoder_select="hpeldsp"
2514 indeo4_decoder_select="ividsp"
2515 indeo5_decoder_select="ividsp"
2516 interplay_video_decoder_select="hpeldsp"
2517 jpegls_decoder_select="mjpeg_decoder"
2518 jv_decoder_select="blockdsp"
2519 lagarith_decoder_select="llviddsp"
2520 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2521 magicyuv_decoder_select="llviddsp"
2522 magicyuv_encoder_select="llvidencdsp"
2523 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2524 metasound_decoder_select="lsp mdct sinewin"
2525 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2526 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2527 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2528 mjpegb_decoder_select="mjpeg_decoder"
2529 mlp_decoder_select="mlp_parser"
2530 mlp_encoder_select="lpc"
2531 motionpixels_decoder_select="bswapdsp"
2532 mp1_decoder_select="mpegaudio"
2533 mp1float_decoder_select="mpegaudio"
2534 mp2_decoder_select="mpegaudio"
2535 mp2float_decoder_select="mpegaudio"
2536 mp3_decoder_select="mpegaudio"
2537 mp3adu_decoder_select="mpegaudio"
2538 mp3adufloat_decoder_select="mpegaudio"
2539 mp3float_decoder_select="mpegaudio"
2540 mp3on4_decoder_select="mpegaudio"
2541 mp3on4float_decoder_select="mpegaudio"
2542 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2543 mpc8_decoder_select="mpegaudiodsp"
2544 mpegvideo_decoder_select="mpegvideo"
2545 mpeg1video_decoder_select="mpegvideo"
2546 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2547 mpeg2video_decoder_select="mpegvideo"
2548 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2549 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2550 mpeg4_encoder_select="h263_encoder"
2551 msa1_decoder_select="mss34dsp"
2552 mscc_decoder_select="zlib"
2553 msmpeg4v1_decoder_select="h263_decoder"
2554 msmpeg4v2_decoder_select="h263_decoder"
2555 msmpeg4v2_encoder_select="h263_encoder"
2556 msmpeg4v3_decoder_select="h263_decoder"
2557 msmpeg4v3_encoder_select="h263_encoder"
2558 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2559 mts2_decoder_select="mss34dsp"
2560 mxpeg_decoder_select="mjpeg_decoder"
2561 nellymoser_decoder_select="mdct sinewin"
2562 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2563 nuv_decoder_select="idctdsp lzo"
2564 on2avc_decoder_select="mdct"
2565 opus_decoder_deps="swresample"
2566 opus_decoder_select="mdct15"
2567 opus_encoder_select="audio_frame_queue mdct15"
2568 png_decoder_select="zlib"
2569 png_encoder_select="llvidencdsp zlib"
2570 prores_decoder_select="blockdsp idctdsp"
2571 prores_encoder_select="fdctdsp"
2572 qcelp_decoder_select="lsp"
2573 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2574 ra_144_decoder_select="audiodsp"
2575 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2576 ralf_decoder_select="golomb"
2577 rawvideo_decoder_select="bswapdsp"
2578 rscc_decoder_select="zlib"
2579 rtjpeg_decoder_select="me_cmp"
2580 rv10_decoder_select="h263_decoder"
2581 rv10_encoder_select="h263_encoder"
2582 rv20_decoder_select="h263_decoder"
2583 rv20_encoder_select="h263_encoder"
2584 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2585 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2586 screenpresso_decoder_select="zlib"
2587 shorten_decoder_select="bswapdsp"
2588 sipr_decoder_select="lsp"
2589 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2590 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2591 sonic_decoder_select="golomb rangecoder"
2592 sonic_encoder_select="golomb rangecoder"
2593 sonic_ls_encoder_select="golomb rangecoder"
2594 sp5x_decoder_select="mjpeg_decoder"
2595 srgc_decoder_select="zlib"
2596 svq1_decoder_select="hpeldsp"
2597 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2598 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2599 svq3_decoder_suggest="zlib"
2600 tak_decoder_select="audiodsp"
2601 tdsc_decoder_select="zlib mjpeg_decoder"
2602 theora_decoder_select="vp3_decoder"
2603 thp_decoder_select="mjpeg_decoder"
2604 tiff_decoder_suggest="zlib lzma"
2605 tiff_encoder_suggest="zlib"
2606 truehd_decoder_select="mlp_parser"
2607 truehd_encoder_select="lpc"
2608 truemotion2_decoder_select="bswapdsp"
2609 truespeech_decoder_select="bswapdsp"
2610 tscc_decoder_select="zlib"
2611 twinvq_decoder_select="mdct lsp sinewin"
2612 txd_decoder_select="texturedsp"
2613 utvideo_decoder_select="bswapdsp llviddsp"
2614 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2615 vble_decoder_select="llviddsp"
2616 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2617 vc1_qsv_decoder_deps="libmfx"
2618 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2619 vc1image_decoder_select="vc1_decoder"
2620 vorbis_decoder_select="mdct"
2621 vorbis_encoder_select="mdct"
2622 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2623 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2624 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2625 vp6a_decoder_select="vp6_decoder"
2626 vp6f_decoder_select="vp6_decoder"
2627 vp7_decoder_select="h264pred videodsp vp8dsp"
2628 vp8_decoder_select="h264pred videodsp vp8dsp"
2629 vp9_decoder_select="videodsp vp9_parser"
2630 webp_decoder_select="vp8_decoder exif"
2631 wmalossless_decoder_select="llauddsp"
2632 wmapro_decoder_select="mdct sinewin wma_freqs"
2633 wmav1_decoder_select="mdct sinewin wma_freqs"
2634 wmav1_encoder_select="mdct sinewin wma_freqs"
2635 wmav2_decoder_select="mdct sinewin wma_freqs"
2636 wmav2_encoder_select="mdct sinewin wma_freqs"
2637 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2638 wmv1_decoder_select="h263_decoder"
2639 wmv1_encoder_select="h263_encoder"
2640 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2641 wmv2_encoder_select="h263_encoder wmv2dsp"
2642 wmv3_decoder_select="vc1_decoder"
2643 wmv3image_decoder_select="wmv3_decoder"
2644 xma1_decoder_select="wmapro_decoder"
2645 xma2_decoder_select="wmapro_decoder"
2646 zerocodec_decoder_select="zlib"
2647 zlib_decoder_select="zlib"
2648 zlib_encoder_select="zlib"
2649 zmbv_decoder_select="zlib"
2650 zmbv_encoder_select="zlib"
2651
2652 # hardware accelerators
2653 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2654 cuda_deps_any="libdl LoadLibrary"
2655 cuvid_deps="cuda"
2656 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2657 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2658 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2659 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2660 xvmc_deps="X11_extensions_XvMClib_h"
2661
2662 h263_vaapi_hwaccel_deps="vaapi"
2663 h263_vaapi_hwaccel_select="h263_decoder"
2664 h263_videotoolbox_hwaccel_deps="videotoolbox"
2665 h263_videotoolbox_hwaccel_select="h263_decoder"
2666 h264_cuvid_hwaccel_deps="cuda cuvid"
2667 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2668 h264_d3d11va_hwaccel_deps="d3d11va"
2669 h264_d3d11va_hwaccel_select="h264_decoder"
2670 h264_d3d11va2_hwaccel_deps="d3d11va"
2671 h264_d3d11va2_hwaccel_select="h264_decoder"
2672 h264_dxva2_hwaccel_deps="dxva2"
2673 h264_dxva2_hwaccel_select="h264_decoder"
2674 h264_mediacodec_hwaccel_deps="mediacodec"
2675 h264_mmal_hwaccel_deps="mmal"
2676 h264_qsv_hwaccel_deps="libmfx"
2677 h264_vaapi_hwaccel_deps="vaapi"
2678 h264_vaapi_hwaccel_select="h264_decoder"
2679 h264_vdpau_hwaccel_deps="vdpau"
2680 h264_vdpau_hwaccel_select="h264_decoder"
2681 h264_videotoolbox_hwaccel_deps="videotoolbox"
2682 h264_videotoolbox_hwaccel_select="h264_decoder"
2683 hevc_cuvid_hwaccel_deps="cuda cuvid"
2684 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2685 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2686 hevc_d3d11va_hwaccel_select="hevc_decoder"
2687 hevc_mediacodec_hwaccel_deps="mediacodec"
2688 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2689 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2690 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2691 hevc_dxva2_hwaccel_select="hevc_decoder"
2692 hevc_qsv_hwaccel_deps="libmfx"
2693 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2694 hevc_vaapi_hwaccel_select="hevc_decoder"
2695 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2696 hevc_vdpau_hwaccel_select="hevc_decoder"
2697 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2698 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2699 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2700 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2701 mpeg_xvmc_hwaccel_deps="xvmc"
2702 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2703 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2704 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2705 mpeg1_vdpau_hwaccel_deps="vdpau"
2706 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2707 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2708 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2709 mpeg1_xvmc_hwaccel_deps="xvmc"
2710 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2711 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2712 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2713 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2714 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2715 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2716 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2717 mpeg2_dxva2_hwaccel_deps="dxva2"
2718 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2719 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2720 mpeg2_mmal_hwaccel_deps="mmal"
2721 mpeg2_qsv_hwaccel_deps="libmfx"
2722 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2723 mpeg2_vaapi_hwaccel_deps="vaapi"
2724 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_vdpau_hwaccel_deps="vdpau"
2726 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2728 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_xvmc_hwaccel_deps="xvmc"
2730 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2731 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2732 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2733 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2734 mpeg4_mmal_hwaccel_deps="mmal"
2735 mpeg4_vaapi_hwaccel_deps="vaapi"
2736 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2737 mpeg4_vdpau_hwaccel_deps="vdpau"
2738 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2739 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2740 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2741 vc1_cuvid_hwaccel_deps="cuda cuvid"
2742 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2743 vc1_d3d11va_hwaccel_deps="d3d11va"
2744 vc1_d3d11va_hwaccel_select="vc1_decoder"
2745 vc1_d3d11va2_hwaccel_deps="d3d11va"
2746 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2747 vc1_dxva2_hwaccel_deps="dxva2"
2748 vc1_dxva2_hwaccel_select="vc1_decoder"
2749 vc1_mmal_hwaccel_deps="mmal"
2750 vc1_qsv_hwaccel_deps="libmfx"
2751 vc1_qsv_hwaccel_select="qsvdec_vc1"
2752 vc1_vaapi_hwaccel_deps="vaapi"
2753 vc1_vaapi_hwaccel_select="vc1_decoder"
2754 vc1_vdpau_hwaccel_deps="vdpau"
2755 vc1_vdpau_hwaccel_select="vc1_decoder"
2756 vp8_cuvid_hwaccel_deps="cuda cuvid"
2757 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2758 vp9_cuvid_hwaccel_deps="cuda cuvid"
2759 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2760 vp8_mediacodec_hwaccel_deps="mediacodec"
2761 vp8_qsv_hwaccel_deps="libmfx"
2762 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2763 vp9_d3d11va_hwaccel_select="vp9_decoder"
2764 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2765 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2766 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2767 vp9_dxva2_hwaccel_select="vp9_decoder"
2768 vp9_mediacodec_hwaccel_deps="mediacodec"
2769 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2770 vp9_vaapi_hwaccel_select="vp9_decoder"
2771 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2772 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2773 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2774 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2775 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2776
2777 # hardware-accelerated codecs
2778 omx_deps="libdl pthreads"
2779 omx_rpi_select="omx"
2780 qsvdec_select="qsv"
2781 qsvenc_select="qsv"
2782 vaapi_encode_deps="vaapi"
2783 v4l2_m2m_deps_any="linux_videodev2_h"
2784
2785 hwupload_cuda_filter_deps="cuda"
2786 scale_npp_filter_deps="cuda libnpp"
2787 scale_cuda_filter_deps="cuda_sdk"
2788 thumbnail_cuda_filter_deps="cuda_sdk"
2789
2790 nvenc_deps="cuda"
2791 nvenc_deps_any="libdl LoadLibrary"
2792 nvenc_encoder_deps="nvenc"
2793
2794 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2795 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2796 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2797 h264_cuvid_decoder_deps="cuda cuvid"
2798 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2799 h264_mediacodec_decoder_deps="mediacodec"
2800 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2801 h264_mmal_decoder_deps="mmal"
2802 h264_nvenc_encoder_deps="nvenc"
2803 h264_omx_encoder_deps="omx"
2804 h264_qsv_decoder_deps="libmfx"
2805 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2806 h264_qsv_encoder_deps="libmfx"
2807 h264_qsv_encoder_select="qsvenc"
2808 h264_rkmpp_decoder_deps="rkmpp"
2809 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2810 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2811 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2812 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2813 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2814 hevc_cuvid_decoder_deps="cuda cuvid"
2815 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2816 hevc_mediacodec_decoder_deps="mediacodec"
2817 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2818 hevc_nvenc_encoder_deps="nvenc"
2819 hevc_qsv_decoder_deps="libmfx"
2820 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2821 hevc_qsv_encoder_deps="libmfx"
2822 hevc_qsv_encoder_select="hevcparse qsvenc"
2823 hevc_rkmpp_decoder_deps="rkmpp"
2824 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2825 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2826 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2827 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2828 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2829 mjpeg_cuvid_decoder_deps="cuda cuvid"
2830 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2831 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2832 mpeg1_cuvid_decoder_deps="cuda cuvid"
2833 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2834 mpeg2_crystalhd_decoder_select="crystalhd"
2835 mpeg2_cuvid_decoder_deps="cuda cuvid"
2836 mpeg2_mmal_decoder_deps="mmal"
2837 mpeg2_mediacodec_decoder_deps="mediacodec"
2838 mpeg2_qsv_decoder_deps="libmfx"
2839 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2840 mpeg2_qsv_encoder_deps="libmfx"
2841 mpeg2_qsv_encoder_select="qsvenc"
2842 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2843 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2844 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2845 mpeg4_crystalhd_decoder_select="crystalhd"
2846 mpeg4_cuvid_decoder_deps="cuda cuvid"
2847 mpeg4_mediacodec_decoder_deps="mediacodec"
2848 mpeg4_mmal_decoder_deps="mmal"
2849 mpeg4_omx_encoder_deps="omx"
2850 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2851 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2852 msmpeg4_crystalhd_decoder_select="crystalhd"
2853 nvenc_h264_encoder_select="h264_nvenc_encoder"
2854 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2855 vc1_crystalhd_decoder_select="crystalhd"
2856 vc1_cuvid_decoder_deps="cuda cuvid"
2857 vc1_mmal_decoder_deps="mmal"
2858 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2859 vp8_cuvid_decoder_deps="cuda cuvid"
2860 vp8_mediacodec_decoder_deps="mediacodec"
2861 vp8_qsv_decoder_deps="libmfx"
2862 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2863 vp8_rkmpp_decoder_deps="rkmpp"
2864 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2865 vp8_vaapi_encoder_select="vaapi_encode"
2866 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2867 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2868 vp9_cuvid_decoder_deps="cuda cuvid"
2869 vp9_mediacodec_decoder_deps="mediacodec"
2870 vp9_rkmpp_decoder_deps="rkmpp"
2871 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2872 vp9_vaapi_encoder_select="vaapi_encode"
2873 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2874 wmv3_crystalhd_decoder_select="crystalhd"
2875
2876 # parsers
2877 aac_parser_select="adts_header"
2878 h264_parser_select="golomb h264dsp h264parse"
2879 hevc_parser_select="hevcparse"
2880 mpegaudio_parser_select="mpegaudioheader"
2881 mpegvideo_parser_select="mpegvideo"
2882 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2883 vc1_parser_select="vc1dsp"
2884
2885 # bitstream_filters
2886 aac_adtstoasc_bsf_select="adts_header"
2887 h264_metadata_bsf_select="cbs_h264"
2888 h264_redundant_pps_bsf_select="cbs_h264"
2889 hevc_metadata_bsf_select="cbs_h265"
2890 mjpeg2jpeg_bsf_select="jpegtables"
2891 mpeg2_metadata_bsf_select="cbs_mpeg2"
2892 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2893
2894 # external libraries
2895 aac_at_decoder_deps="audiotoolbox"
2896 ac3_at_decoder_deps="audiotoolbox"
2897 ac3_at_decoder_select="ac3_parser"
2898 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2899 alac_at_decoder_deps="audiotoolbox"
2900 amr_nb_at_decoder_deps="audiotoolbox"
2901 avisynth_deps_any="libdl LoadLibrary"
2902 avisynth_demuxer_deps="avisynth"
2903 avisynth_demuxer_select="riffdec"
2904 eac3_at_decoder_deps="audiotoolbox"
2905 eac3_at_decoder_select="ac3_parser"
2906 gsm_ms_at_decoder_deps="audiotoolbox"
2907 ilbc_at_decoder_deps="audiotoolbox"
2908 mp1_at_decoder_deps="audiotoolbox"
2909 mp2_at_decoder_deps="audiotoolbox"
2910 mp3_at_decoder_deps="audiotoolbox"
2911 mp1_at_decoder_select="mpegaudioheader"
2912 mp2_at_decoder_select="mpegaudioheader"
2913 mp3_at_decoder_select="mpegaudioheader"
2914 pcm_alaw_at_decoder_deps="audiotoolbox"
2915 pcm_mulaw_at_decoder_deps="audiotoolbox"
2916 qdmc_at_decoder_deps="audiotoolbox"
2917 qdm2_at_decoder_deps="audiotoolbox"
2918 aac_at_encoder_deps="audiotoolbox"
2919 aac_at_encoder_select="audio_frame_queue"
2920 alac_at_encoder_deps="audiotoolbox"
2921 alac_at_encoder_select="audio_frame_queue"
2922 ilbc_at_encoder_deps="audiotoolbox"
2923 ilbc_at_encoder_select="audio_frame_queue"
2924 pcm_alaw_at_encoder_deps="audiotoolbox"
2925 pcm_alaw_at_encoder_select="audio_frame_queue"
2926 pcm_mulaw_at_encoder_deps="audiotoolbox"
2927 pcm_mulaw_at_encoder_select="audio_frame_queue"
2928 chromaprint_muxer_deps="chromaprint"
2929 h264_videotoolbox_encoder_deps="pthreads"
2930 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2931 libcelt_decoder_deps="libcelt"
2932 libfdk_aac_decoder_deps="libfdk_aac"
2933 libfdk_aac_encoder_deps="libfdk_aac"
2934 libfdk_aac_encoder_select="audio_frame_queue"
2935 libgme_demuxer_deps="libgme"
2936 libgsm_decoder_deps="libgsm"
2937 libgsm_encoder_deps="libgsm"
2938 libgsm_ms_decoder_deps="libgsm"
2939 libgsm_ms_encoder_deps="libgsm"
2940 libilbc_decoder_deps="libilbc"
2941 libilbc_encoder_deps="libilbc"
2942 libkvazaar_encoder_deps="libkvazaar"
2943 libmodplug_demuxer_deps="libmodplug"
2944 libmp3lame_encoder_deps="libmp3lame"
2945 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2946 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2947 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2948 libopencore_amrnb_encoder_select="audio_frame_queue"
2949 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2950 libopenh264_decoder_deps="libopenh264"
2951 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2952 libopenh264_encoder_deps="libopenh264"
2953 libopenjpeg_decoder_deps="libopenjpeg"
2954 libopenjpeg_encoder_deps="libopenjpeg"
2955 libopenmpt_demuxer_deps="libopenmpt"
2956 libopus_decoder_deps="libopus"
2957 libopus_encoder_deps="libopus"
2958 libopus_encoder_select="audio_frame_queue"
2959 librsvg_decoder_deps="librsvg"
2960 libshine_encoder_deps="libshine"
2961 libshine_encoder_select="audio_frame_queue"
2962 libspeex_decoder_deps="libspeex"
2963 libspeex_encoder_deps="libspeex"
2964 libspeex_encoder_select="audio_frame_queue"
2965 libtheora_encoder_deps="libtheora"
2966 libtwolame_encoder_deps="libtwolame"
2967 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2968 libvorbis_decoder_deps="libvorbis"
2969 libvorbis_encoder_deps="libvorbis libvorbisenc"
2970 libvorbis_encoder_select="audio_frame_queue"
2971 libvpx_vp8_decoder_deps="libvpx"
2972 libvpx_vp8_encoder_deps="libvpx"
2973 libvpx_vp9_decoder_deps="libvpx"
2974 libvpx_vp9_encoder_deps="libvpx"
2975 libwavpack_encoder_deps="libwavpack"
2976 libwavpack_encoder_select="audio_frame_queue"
2977 libwebp_encoder_deps="libwebp"
2978 libwebp_anim_encoder_deps="libwebp"
2979 libx262_encoder_deps="libx262"
2980 libx264_encoder_deps="libx264"
2981 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2982 libx264rgb_encoder_select="libx264_encoder"
2983 libx265_encoder_deps="libx265"
2984 libxavs_encoder_deps="libxavs"
2985 libxvid_encoder_deps="libxvid"
2986 libzvbi_teletext_decoder_deps="libzvbi"
2987 videotoolbox_suggest="coreservices"
2988 videotoolbox_deps="corefoundation coremedia corevideo"
2989 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2990
2991 # demuxers / muxers
2992 ac3_demuxer_select="ac3_parser"
2993 aiff_muxer_select="iso_media"
2994 asf_demuxer_select="riffdec"
2995 asf_o_demuxer_select="riffdec"
2996 asf_muxer_select="riffenc"
2997 asf_stream_muxer_select="asf_muxer"
2998 avi_demuxer_select="iso_media riffdec exif"
2999 avi_muxer_select="riffenc"
3000 caf_demuxer_select="iso_media riffdec"
3001 caf_muxer_select="iso_media"
3002 dash_muxer_select="mp4_muxer"
3003 dash_demuxer_deps="libxml2"
3004 dirac_demuxer_select="dirac_parser"
3005 dts_demuxer_select="dca_parser"
3006 dtshd_demuxer_select="dca_parser"
3007 dv_demuxer_select="dvprofile"
3008 dv_muxer_select="dvprofile"
3009 dxa_demuxer_select="riffdec"
3010 eac3_demuxer_select="ac3_parser"
3011 f4v_muxer_select="mov_muxer"
3012 fifo_muxer_deps="threads"
3013 flac_demuxer_select="flac_parser"
3014 hds_muxer_select="flv_muxer"
3015 hls_muxer_select="mpegts_muxer"
3016 hls_muxer_suggest="gcrypt openssl"
3017 image2_alias_pix_demuxer_select="image2_demuxer"
3018 image2_brender_pix_demuxer_select="image2_demuxer"
3019 ipod_muxer_select="mov_muxer"
3020 ismv_muxer_select="mov_muxer"
3021 matroska_audio_muxer_select="matroska_muxer"
3022 matroska_demuxer_select="iso_media riffdec"
3023 matroska_demuxer_suggest="bzlib lzo zlib"
3024 matroska_muxer_select="iso_media riffenc"
3025 mmf_muxer_select="riffenc"
3026 mov_demuxer_select="iso_media riffdec"
3027 mov_demuxer_suggest="zlib"
3028 mov_muxer_select="iso_media riffenc rtpenc_chain"
3029 mp3_demuxer_select="mpegaudio_parser"
3030 mp3_muxer_select="mpegaudioheader"
3031 mp4_muxer_select="mov_muxer"
3032 mpegts_demuxer_select="iso_media"
3033 mpegts_muxer_select="adts_muxer latm_muxer"
3034 mpegtsraw_demuxer_select="mpegts_demuxer"
3035 mxf_d10_muxer_select="mxf_muxer"
3036 mxf_opatom_muxer_select="mxf_muxer"
3037 nut_muxer_select="riffenc"
3038 nuv_demuxer_select="riffdec"
3039 oga_muxer_select="ogg_muxer"
3040 ogg_demuxer_select="dirac_parse"
3041 ogv_muxer_select="ogg_muxer"
3042 opus_muxer_select="ogg_muxer"
3043 psp_muxer_select="mov_muxer"
3044 rtp_demuxer_select="sdp_demuxer"
3045 rtp_muxer_select="golomb"
3046 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3047 rtsp_demuxer_select="http_protocol rtpdec"
3048 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3049 sap_demuxer_select="sdp_demuxer"
3050 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3051 sdp_demuxer_select="rtpdec"
3052 smoothstreaming_muxer_select="ismv_muxer"
3053 spdif_demuxer_select="adts_header"
3054 spdif_muxer_select="adts_header"
3055 spx_muxer_select="ogg_muxer"
3056 swf_demuxer_suggest="zlib"
3057 tak_demuxer_select="tak_parser"
3058 tg2_muxer_select="mov_muxer"
3059 tgp_muxer_select="mov_muxer"
3060 vobsub_demuxer_select="mpegps_demuxer"
3061 w64_demuxer_select="wav_demuxer"
3062 w64_muxer_select="wav_muxer"
3063 wav_demuxer_select="riffdec"
3064 wav_muxer_select="riffenc"
3065 webm_muxer_select="iso_media riffenc"
3066 webm_dash_manifest_demuxer_select="matroska_demuxer"
3067 wtv_demuxer_select="mpegts_demuxer riffdec"
3068 wtv_muxer_select="mpegts_muxer riffenc"
3069 xmv_demuxer_select="riffdec"
3070 xwma_demuxer_select="riffdec"
3071
3072 # indevs / outdevs
3073 alsa_indev_deps="alsa"
3074 alsa_outdev_deps="alsa"
3075 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3076 avfoundation_indev_suggest="coregraphics applicationservices"
3077 avfoundation_indev_extralibs="-framework Foundation"
3078 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3079 caca_outdev_deps="libcaca"
3080 decklink_deps_any="libdl LoadLibrary"
3081 decklink_indev_deps="decklink threads"
3082 decklink_indev_extralibs="-lstdc++"
3083 decklink_outdev_deps="decklink threads"
3084 decklink_outdev_extralibs="-lstdc++"
3085 libndi_newtek_indev_deps="libndi_newtek"
3086 libndi_newtek_indev_extralibs="-lndi"
3087 libndi_newtek_outdev_deps="libndi_newtek"
3088 libndi_newtek_outdev_extralibs="-lndi"
3089 dshow_indev_deps="IBaseFilter"
3090 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3091 fbdev_indev_deps="linux_fb_h"
3092 fbdev_outdev_deps="linux_fb_h"
3093 gdigrab_indev_deps="CreateDIBSection"
3094 gdigrab_indev_extralibs="-lgdi32"
3095 gdigrab_indev_select="bmp_decoder"
3096 iec61883_indev_deps="libiec61883"
3097 jack_indev_deps="libjack"
3098 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3099 kmsgrab_indev_deps="libdrm"
3100 lavfi_indev_deps="avfilter"
3101 libcdio_indev_deps="libcdio"
3102 libdc1394_indev_deps="libdc1394"
3103 openal_indev_deps="openal"
3104 opengl_outdev_deps="opengl"
3105 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3106 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3107 pulse_indev_deps="libpulse"
3108 pulse_outdev_deps="libpulse"
3109 sdl2_outdev_deps="sdl2"
3110 sndio_indev_deps="sndio"
3111 sndio_outdev_deps="sndio"
3112 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3113 v4l2_indev_suggest="libv4l2"
3114 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3115 v4l2_outdev_suggest="libv4l2"
3116 vfwcap_indev_deps="vfw32 vfwcap_defines"
3117 xcbgrab_indev_deps="libxcb"
3118 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3119 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3120 xv_outdev_extralibs="-lXv -lX11 -lXext"
3121
3122 # protocols
3123 async_protocol_deps="threads"
3124 bluray_protocol_deps="libbluray"
3125 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3126 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3127 ffrtmpcrypt_protocol_select="tcp_protocol"
3128 ffrtmphttp_protocol_conflict="librtmp_protocol"
3129 ffrtmphttp_protocol_select="http_protocol"
3130 ftp_protocol_select="tcp_protocol"
3131 gopher_protocol_select="network"
3132 http_protocol_select="tcp_protocol"
3133 http_protocol_suggest="zlib"
3134 httpproxy_protocol_select="tcp_protocol"
3135 httpproxy_protocol_suggest="zlib"
3136 https_protocol_select="tls_protocol"
3137 https_protocol_suggest="zlib"
3138 icecast_protocol_select="http_protocol"
3139 librtmp_protocol_deps="librtmp"
3140 librtmpe_protocol_deps="librtmp"
3141 librtmps_protocol_deps="librtmp"
3142 librtmpt_protocol_deps="librtmp"
3143 librtmpte_protocol_deps="librtmp"
3144 libsmbclient_protocol_deps="libsmbclient gplv3"
3145 libssh_protocol_deps="libssh"
3146 mmsh_protocol_select="http_protocol"
3147 mmst_protocol_select="network"
3148 rtmp_protocol_conflict="librtmp_protocol"
3149 rtmp_protocol_select="tcp_protocol"
3150 rtmp_protocol_suggest="zlib"
3151 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3152 rtmpe_protocol_suggest="zlib"
3153 rtmps_protocol_conflict="librtmp_protocol"
3154 rtmps_protocol_select="tls_protocol"
3155 rtmps_protocol_suggest="zlib"
3156 rtmpt_protocol_select="ffrtmphttp_protocol"
3157 rtmpt_protocol_suggest="zlib"
3158 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3159 rtmpte_protocol_suggest="zlib"
3160 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3161 rtmpts_protocol_suggest="zlib"
3162 rtp_protocol_select="udp_protocol"
3163 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3164 sctp_protocol_select="network"
3165 srtp_protocol_select="rtp_protocol srtp"
3166 tcp_protocol_select="network"
3167 tls_gnutls_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol"
3168 tls_gnutls_protocol_deps="gnutls"
3169 tls_gnutls_protocol_select="tcp_protocol"
3170 tls_openssl_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol"
3171 tls_openssl_protocol_deps="openssl"
3172 tls_openssl_protocol_select="tcp_protocol"
3173 tls_schannel_protocol_deps="schannel"
3174 tls_schannel_protocol_select="tcp_protocol"
3175 tls_securetransport_protocol_deps="securetransport"
3176 tls_securetransport_protocol_select="tcp_protocol"
3177 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3178 udp_protocol_select="network"
3179 udplite_protocol_select="network"
3180 unix_protocol_deps="sys_un_h"
3181 unix_protocol_select="network"
3182
3183 # filters
3184 afftfilt_filter_deps="avcodec"
3185 afftfilt_filter_select="fft"
3186 afir_filter_deps="avcodec"
3187 afir_filter_select="fft"
3188 amovie_filter_deps="avcodec avformat"
3189 aresample_filter_deps="swresample"
3190 ass_filter_deps="libass"
3191 atempo_filter_deps="avcodec"
3192 atempo_filter_select="rdft"
3193 azmq_filter_deps="libzmq"
3194 blackframe_filter_deps="gpl"
3195 boxblur_filter_deps="gpl"
3196 bs2b_filter_deps="libbs2b"
3197 colormatrix_filter_deps="gpl"
3198 coreimage_filter_deps="coreimage appkit"
3199 coreimage_filter_extralibs="-framework OpenGL"
3200 coreimagesrc_filter_deps="coreimage appkit"
3201 coreimagesrc_filter_extralibs="-framework OpenGL"
3202 cover_rect_filter_deps="avcodec avformat gpl"
3203 cropdetect_filter_deps="gpl"
3204 deinterlace_qsv_filter_deps="libmfx"
3205 deinterlace_vaapi_filter_deps="vaapi"
3206 delogo_filter_deps="gpl"
3207 deshake_filter_select="pixelutils"
3208 deshake_filter_suggest="opencl"
3209 drawtext_filter_deps="libfreetype"
3210 drawtext_filter_suggest="libfontconfig libfribidi"
3211 elbg_filter_deps="avcodec"
3212 eq_filter_deps="gpl"
3213 fftfilt_filter_deps="avcodec"
3214 fftfilt_filter_select="rdft"
3215 find_rect_filter_deps="avcodec avformat gpl"
3216 firequalizer_filter_deps="avcodec"
3217 firequalizer_filter_select="rdft"
3218 flite_filter_deps="libflite"
3219 framerate_filter_select="pixelutils"
3220 frei0r_filter_deps="frei0r libdl"
3221 frei0r_src_filter_deps="frei0r libdl"
3222 fspp_filter_deps="gpl"
3223 geq_filter_deps="gpl"
3224 histeq_filter_deps="gpl"
3225 hqdn3d_filter_deps="gpl"
3226 interlace_filter_deps="gpl"
3227 kerndeint_filter_deps="gpl"
3228 ladspa_filter_deps="ladspa libdl"
3229 mcdeint_filter_deps="avcodec gpl"
3230 movie_filter_deps="avcodec avformat"
3231 mpdecimate_filter_deps="gpl"
3232 mpdecimate_filter_select="pixelutils"
3233 mptestsrc_filter_deps="gpl"
3234 negate_filter_deps="lut_filter"
3235 nnedi_filter_deps="gpl"
3236 ocr_filter_deps="libtesseract"
3237 ocv_filter_deps="libopencv"
3238 owdenoise_filter_deps="gpl"
3239 pan_filter_deps="swresample"
3240 perspective_filter_deps="gpl"
3241 phase_filter_deps="gpl"
3242 pp7_filter_deps="gpl"
3243 pp_filter_deps="gpl postproc"
3244 pullup_filter_deps="gpl"
3245 removelogo_filter_deps="avcodec avformat swscale"
3246 repeatfields_filter_deps="gpl"
3247 resample_filter_deps="avresample"
3248 rubberband_filter_deps="librubberband"
3249 sab_filter_deps="gpl swscale"
3250 scale2ref_filter_deps="swscale"
3251 scale_filter_deps="swscale"
3252 scale_qsv_filter_deps="libmfx"
3253 select_filter_select="pixelutils"
3254 showcqt_filter_deps="avcodec avformat swscale"
3255 showcqt_filter_suggest="libfontconfig libfreetype"
3256 showcqt_filter_select="fft"
3257 showfreqs_filter_deps="avcodec"
3258 showfreqs_filter_select="fft"
3259 showspectrum_filter_deps="avcodec"
3260 showspectrum_filter_select="fft"
3261 showspectrumpic_filter_deps="avcodec"
3262 showspectrumpic_filter_select="fft"
3263 signature_filter_deps="gpl avcodec avformat"
3264 smartblur_filter_deps="gpl swscale"
3265 sofalizer_filter_deps="libmysofa avcodec"
3266 sofalizer_filter_select="fft"
3267 spectrumsynth_filter_deps="avcodec"
3268 spectrumsynth_filter_select="fft"
3269 spp_filter_deps="gpl avcodec"
3270 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3271 stereo3d_filter_deps="gpl"
3272 subtitles_filter_deps="avformat avcodec libass"
3273 super2xsai_filter_deps="gpl"
3274 pixfmts_super2xsai_test_deps="super2xsai_filter"
3275 tinterlace_filter_deps="gpl"
3276 tinterlace_merge_test_deps="tinterlace_filter"
3277 tinterlace_pad_test_deps="tinterlace_filter"
3278 tonemap_filter_deps="const_nan"
3279 uspp_filter_deps="gpl avcodec"
3280 unsharp_filter_suggest="opencl"
3281 vaguedenoiser_filter_deps="gpl"
3282 vidstabdetect_filter_deps="libvidstab"
3283 vidstabtransform_filter_deps="libvidstab"
3284 libvmaf_filter_deps="libvmaf"
3285 zmq_filter_deps="libzmq"
3286 zoompan_filter_deps="swscale"
3287 zscale_filter_deps="libzimg const_nan"
3288 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3289
3290 # examples
3291 avio_dir_cmd_deps="avformat avutil"
3292 avio_reading_deps="avformat avcodec avutil"
3293 decode_audio_example_deps="avcodec avutil"
3294 decode_video_example_deps="avcodec avutil"
3295 demuxing_decoding_example_deps="avcodec avformat avutil"
3296 encode_audio_example_deps="avcodec avutil"
3297 encode_video_example_deps="avcodec avutil"
3298 extract_mvs_example_deps="avcodec avformat avutil"
3299 filter_audio_example_deps="avfilter avutil"
3300 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3301 filtering_video_example_deps="avfilter avcodec avformat avutil"
3302 http_multiclient_example_deps="avformat avutil fork"
3303 hw_decode_example_deps="avcodec avformat avutil"
3304 metadata_example_deps="avformat avutil"
3305 muxing_example_deps="avcodec avformat avutil swscale"
3306 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3307 remuxing_example_deps="avcodec avformat avutil"
3308 resampling_audio_example_deps="avutil swresample"
3309 scaling_video_example_deps="avutil swscale"
3310 transcode_aac_example_deps="avcodec avformat swresample"
3311 transcoding_example_deps="avfilter avcodec avformat avutil"
3312
3313 # EXTRALIBS_LIST
3314 cpu_init_extralibs="pthreads_extralibs"
3315 cws2fws_extralibs="zlib_extralibs"
3316
3317 # libraries, in linking order
3318 avcodec_deps="avutil"
3319 avcodec_suggest="libm"
3320 avcodec_select="null_bsf"
3321 avdevice_deps="avformat avcodec avutil"
3322 avdevice_suggest="libm"
3323 avfilter_deps="avutil"
3324 avfilter_suggest="libm"
3325 avformat_deps="avcodec avutil"
3326 avformat_suggest="libm network zlib"
3327 avresample_deps="avutil"
3328 avresample_suggest="libm"
3329 avutil_suggest="clock_gettime libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3330 postproc_deps="avutil gpl"
3331 postproc_suggest="libm"
3332 swresample_deps="avutil"
3333 swresample_suggest="libm libsoxr"
3334 swscale_deps="avutil"
3335 swscale_suggest="libm"
3336
3337 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3338 avfilter_extralibs="pthreads_extralibs"
3339 avutil_extralibs="nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3340
3341 # programs
3342 ffmpeg_deps="avcodec avfilter avformat swresample"
3343 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3344                null_filter
3345                trim_filter"
3346 ffmpeg_suggest="ole32 psapi shell32"
3347 ffplay_deps="avcodec avformat swscale swresample sdl2"
3348 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3349 ffplay_suggest="shell32"
3350 ffprobe_deps="avcodec avformat"
3351 ffprobe_suggest="shell32"
3352 ffserver_deps="avformat fork sarestart"
3353 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3354
3355 # documentation
3356 podpages_deps="perl"
3357 manpages_deps="perl pod2man"
3358 htmlpages_deps="perl"
3359 htmlpages_deps_any="makeinfo_html texi2html"
3360 txtpages_deps="perl makeinfo"
3361 doc_deps_any="manpages htmlpages podpages txtpages"
3362
3363 # default parameters
3364
3365 logfile="ffbuild/config.log"
3366
3367 # installation paths
3368 prefix_default="/usr/local"
3369 bindir_default='${prefix}/bin'
3370 datadir_default='${prefix}/share/ffmpeg'
3371 docdir_default='${prefix}/share/doc/ffmpeg'
3372 incdir_default='${prefix}/include'
3373 libdir_default='${prefix}/lib'
3374 mandir_default='${prefix}/share/man'
3375
3376 # toolchain
3377 ar_default="ar"
3378 cc_default="gcc"
3379 cxx_default="g++"
3380 host_cc_default="gcc"
3381 doxygen_default="doxygen"
3382 install="install"
3383 ln_s_default="ln -s -f"
3384 nm_default="nm -g"
3385 pkg_config_default=pkg-config
3386 ranlib_default="ranlib"
3387 strip_default="strip"
3388 version_script='--version-script'
3389 x86asmexe_default="nasm"
3390 windres_default="windres"
3391 nvcc_default="nvcc"
3392 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3393 striptype="direct"
3394
3395 # OS
3396 target_os_default=$(tolower $(uname -s))
3397 host_os=$target_os_default
3398
3399 # machine
3400 if test "$target_os_default" = aix; then
3401     arch_default=$(uname -p)
3402     strip_default="strip -X32_64"
3403 else
3404     arch_default=$(uname -m)
3405 fi
3406 cpu="generic"
3407 intrinsics="none"
3408
3409 # configurable options
3410 enable $PROGRAM_LIST
3411 enable $DOCUMENT_LIST
3412 enable $EXAMPLE_LIST
3413 enable $(filter_out avresample $LIBRARY_LIST)
3414 enable stripping
3415
3416 enable asm
3417 enable debug
3418 enable doc
3419 enable faan faandct faanidct
3420 enable optimizations
3421 enable runtime_cpudetect
3422 enable safe_bitstream_reader
3423 enable static
3424 enable swscale_alpha
3425 enable valgrind_backtrace
3426
3427 sws_max_filter_size_default=256
3428 set_default sws_max_filter_size
3429
3430 # internal components are enabled by default
3431 enable $EXTRALIBS_LIST
3432
3433 # Avoid external, non-system, libraries getting enabled by dependency resolution
3434 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3435
3436 # build settings
3437 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3438 LIBPREF="lib"
3439 LIBSUF=".a"
3440 FULLNAME='$(NAME)$(BUILDSUF)'
3441 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3442 SLIBPREF="lib"
3443 SLIBSUF=".so"
3444 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3445 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3446 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3447 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3448 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3449 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3450 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3451
3452 asflags_filter=echo
3453 cflags_filter=echo
3454 ldflags_filter=echo
3455
3456 AS_C='-c'
3457 AS_O='-o $@'
3458 CC_C='-c'
3459 CC_E='-E -o $@'
3460 CC_O='-o $@'
3461 CXX_C='-c'
3462 CXX_O='-o $@'
3463 OBJCC_C='-c'
3464 OBJCC_E='-E -o $@'
3465 OBJCC_O='-o $@'
3466 X86ASM_O='-o $@'
3467 LD_O='-o $@'
3468 LD_LIB='-l%'
3469 LD_PATH='-L'
3470 HOSTCC_C='-c'
3471 HOSTCC_E='-E -o $@'
3472 HOSTCC_O='-o $@'
3473 HOSTLD_O='-o $@'
3474 NVCC_C='-c'
3475 NVCC_O='-o $@'
3476
3477 host_extralibs='-lm'
3478 host_cflags_filter=echo
3479 host_ldflags_filter=echo
3480
3481 target_path='$(CURDIR)'
3482
3483 # since the object filename is not given with the -MM flag, the compiler
3484 # is only able to print the basename, and we must add the path ourselves
3485 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3486 DEPFLAGS='-MM'
3487
3488 mkdir -p ffbuild
3489
3490 # find source path
3491 if test -f configure; then
3492     source_path=.
3493 else
3494     source_path=$(cd $(dirname "$0"); pwd)
3495     case "$source_path" in
3496         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3497     esac
3498     test -e "$source_path/config.h" &&
3499         die "Out of tree builds are impossible with config.h in source dir."
3500 fi
3501
3502 for v in "$@"; do
3503     r=${v#*=}
3504     l=${v%"$r"}
3505     r=$(sh_quote "$r")
3506     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3507 done
3508
3509 find_things(){
3510     thing=$1
3511     pattern=$2
3512     file=$source_path/$3
3513     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3514 }
3515
3516 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3517 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3518 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3519 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3520 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3521 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3522 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3523 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3524 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3525
3526 find_things_extern(){
3527     thing=$1
3528     pattern=$2
3529     file=$source_path/$3
3530     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3531 }
3532
3533 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3534 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3535
3536 AVCODEC_COMPONENTS_LIST="
3537     $BSF_LIST
3538     $DECODER_LIST
3539     $ENCODER_LIST
3540     $HWACCEL_LIST
3541     $PARSER_LIST
3542 "
3543
3544 AVDEVICE_COMPONENTS_LIST="
3545     $INDEV_LIST
3546     $OUTDEV_LIST
3547 "
3548
3549 AVFILTER_COMPONENTS_LIST="
3550     $FILTER_LIST
3551 "
3552
3553 AVFORMAT_COMPONENTS_LIST="
3554     $DEMUXER_LIST
3555     $MUXER_LIST
3556     $PROTOCOL_LIST
3557 "
3558
3559 ALL_COMPONENTS="
3560     $AVCODEC_COMPONENTS_LIST
3561     $AVDEVICE_COMPONENTS_LIST
3562     $AVFILTER_COMPONENTS_LIST
3563     $AVFORMAT_COMPONENTS_LIST
3564 "
3565
3566 for n in $COMPONENT_LIST; do
3567     v=$(toupper ${n%s})_LIST
3568     eval enable \$$v
3569     eval ${n}_if_any="\$$v"
3570 done
3571
3572 enable $ARCH_EXT_LIST
3573
3574 die_unknown(){
3575     echo "Unknown option \"$1\"."
3576     echo "See $0 --help for available options."
3577     exit 1
3578 }
3579
3580 print_in_columns() {
3581     cols=$(expr $ncols / 24)
3582     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3583 }
3584
3585 show_list() {
3586     suffix=_$1
3587     shift
3588     echo $* | sed s/$suffix//g | print_in_columns
3589     exit 0
3590 }
3591
3592 rand_list(){
3593     IFS=', '
3594     set -- $*
3595     unset IFS
3596     for thing; do
3597         comp=${thing%:*}
3598         prob=${thing#$comp}
3599         prob=${prob#:}
3600         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3601         echo "prob ${prob:-0.5}"
3602         printf '%s\n' $comp
3603     done
3604 }
3605
3606 do_random(){
3607     action=$1
3608     shift
3609     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3610     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3611 }
3612
3613 for opt do
3614     optval="${opt#*=}"
3615     case "$opt" in
3616         --extra-ldflags=*)
3617             add_ldflags $optval
3618         ;;
3619         --extra-ldexeflags=*)
3620             add_ldexeflags $optval
3621         ;;
3622         --extra-ldlibflags=*)
3623             add_ldlibflags $optval
3624         ;;
3625         --extra-libs=*)
3626             add_extralibs $optval
3627         ;;
3628         --disable-devices)
3629             disable $INDEV_LIST $OUTDEV_LIST
3630         ;;
3631         --enable-debug=*)
3632             debuglevel="$optval"
3633         ;;
3634         --disable-programs)
3635             disable $PROGRAM_LIST
3636         ;;
3637         --disable-everything)
3638             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3639         ;;
3640         --disable-all)
3641             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3642             disable $LIBRARY_LIST $PROGRAM_LIST doc
3643             enable avutil
3644         ;;
3645         --enable-random|--disable-random)
3646             action=${opt%%-random}
3647             do_random ${action#--} $COMPONENT_LIST
3648         ;;
3649         --enable-random=*|--disable-random=*)
3650             action=${opt%%-random=*}
3651             do_random ${action#--} $optval
3652         ;;
3653         --enable-sdl)
3654             enable sdl2
3655         ;;
3656         --enable-*=*|--disable-*=*)
3657             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3658             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3659             eval list=\$$(toupper $thing)_LIST
3660             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3661             list=$(filter "$name" $list)
3662             [ "$list" = "" ] && warn "Option $opt did not match anything"
3663             $action $list
3664         ;;
3665         --enable-yasm|--disable-yasm)
3666             warn "The ${opt} option is only provided for compatibility and will be\n"\
3667                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3668             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3669         ;;
3670         --yasmexe=*)
3671             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3672                  "removed in the future. Use --x86asmexe instead."
3673             x86asmexe="$optval"
3674         ;;
3675         --enable-?*|--disable-?*)
3676             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3677             if is_in $option $COMPONENT_LIST; then
3678                 test $action = disable && action=unset
3679                 eval $action \$$(toupper ${option%s})_LIST
3680             elif is_in $option $CMDLINE_SELECT; then
3681                 $action $option
3682             else
3683                 die_unknown $opt
3684             fi
3685         ;;
3686         --list-*)
3687             NAME="${opt#--list-}"
3688             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3689             NAME=${NAME%s}
3690             eval show_list $NAME \$$(toupper $NAME)_LIST
3691         ;;
3692         --help|-h) show_help
3693         ;;
3694         --quiet|-q) quiet=yes
3695         ;;
3696         --fatal-warnings) enable fatal_warnings
3697         ;;
3698         --libfuzzer=*)
3699             libfuzzer_path="$optval"
3700         ;;
3701         *)
3702             optname="${opt%%=*}"
3703             optname="${optname#--}"
3704             optname=$(echo "$optname" | sed 's/-/_/g')
3705             if is_in $optname $CMDLINE_SET; then
3706                 eval $optname='$optval'
3707             elif is_in $optname $CMDLINE_APPEND; then
3708                 append $optname "$optval"
3709             else
3710                 die_unknown $opt
3711             fi
3712         ;;
3713     esac
3714 done
3715
3716 for e in $env; do
3717     eval "export $e"
3718 done
3719
3720 if disabled autodetect; then
3721
3722     # Unless iconv is explicitely disabled by the user, we still want to probe
3723     # for the iconv from the libc.
3724     disabled iconv || enable libc_iconv
3725
3726     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3727     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3728 fi
3729 # Mark specifically enabled, but normally autodetected libraries as requested.
3730 for lib in $AUTODETECT_LIBS; do
3731     enabled $lib && request $lib
3732 done
3733 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3734 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3735 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3736
3737 disabled logging && logfile=/dev/null
3738
3739 die_license_disabled() {
3740     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3741 }
3742
3743 die_license_disabled_gpl() {
3744     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3745 }
3746
3747 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3748 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3749
3750 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3751 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3752
3753 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3754
3755 # Disable all the library-specific components if the library itself
3756 # is disabled, see AVCODEC_LIST and following _LIST variables.
3757
3758 disable_components(){
3759     disabled ${1} && disable $(
3760         eval components="\$$(toupper ${1})_COMPONENTS"
3761         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3762     )
3763 }
3764
3765 map 'disable_components $v' $LIBRARY_LIST
3766
3767 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3768 set >> $logfile
3769
3770 test -n "$valgrind" && toolchain="valgrind-memcheck"
3771
3772 enabled ossfuzz && {
3773     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3774     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3775 }
3776
3777 case "$toolchain" in
3778     *-asan)
3779         cc_default="${toolchain%-asan}"
3780         add_cflags  -fsanitize=address
3781         add_ldflags -fsanitize=address
3782     ;;
3783     *-msan)
3784         cc_default="${toolchain%-msan}"
3785         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3786         add_ldflags -fsanitize=memory
3787     ;;
3788     *-tsan)
3789         cc_default="${toolchain%-tsan}"
3790         add_cflags  -fsanitize=thread -fPIE
3791         add_ldflags -fsanitize=thread -pie
3792         case "$toolchain" in
3793             gcc-tsan)
3794                 add_cflags  -fPIC
3795                 add_ldflags -fPIC
3796                 ;;
3797         esac
3798     ;;
3799     *-usan)
3800         cc_default="${toolchain%-usan}"
3801         add_cflags  -fsanitize=undefined
3802         add_ldflags -fsanitize=undefined
3803     ;;
3804     valgrind-*)
3805         target_exec_default="valgrind"
3806         case "$toolchain" in
3807             valgrind-massif)
3808                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3809                 ;;
3810             valgrind-memcheck)
3811                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3812                 ;;
3813         esac
3814     ;;
3815     msvc)
3816         # Check whether the current MSVC version needs the C99 converter.
3817         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3818         # support enough of C99 to build ffmpeg. Default to the new
3819         # behaviour if the regexp was unable to match anything, since this
3820         # successfully parses the version number of existing supported
3821         # versions that require the converter (MSVC 2010 and 2012).
3822         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3823         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3824             cc_default="cl"
3825             cxx_default="cl"
3826         else
3827             cc_default="c99wrap cl"
3828             cxx_default="c99wrap cl"
3829         fi
3830         ld_default="$source_path/compat/windows/mslink"
3831         nm_default="dumpbin -symbols"
3832         ar_default="lib"
3833         case "$arch" in
3834         arm*)
3835             as_default="armasm"
3836             ;;
3837         esac
3838         target_os_default="win32"
3839         # Use a relative path for TMPDIR. This makes sure all the
3840         # ffconf temp files are written with a relative path, avoiding
3841         # issues with msys/win32 path conversion for MSVC parameters
3842         # such as -Fo<file> or -out:<file>.
3843         TMPDIR=.
3844     ;;
3845     icl)
3846         cc_default="icl"
3847         ld_default="xilink"
3848         nm_default="dumpbin -symbols"
3849         ar_default="xilib"
3850         target_os_default="win32"
3851         TMPDIR=.
3852     ;;
3853     gcov)
3854         add_cflags  -fprofile-arcs -ftest-coverage
3855         add_ldflags -fprofile-arcs -ftest-coverage
3856     ;;
3857     llvm-cov)
3858         add_cflags -fprofile-arcs -ftest-coverage
3859         add_ldflags --coverage
3860     ;;
3861     hardened)
3862         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3863         add_cflags   -fno-strict-overflow -fstack-protector-all
3864         add_ldflags  -Wl,-z,relro -Wl,-z,now
3865         add_cflags   -fPIE
3866         add_ldexeflags -fPIE -pie
3867     ;;
3868     ?*)
3869         die "Unknown toolchain $toolchain"
3870     ;;
3871 esac
3872
3873 test -n "$cross_prefix" && enable cross_compile
3874
3875 if enabled cross_compile; then
3876     test -n "$arch" && test -n "$target_os" ||
3877         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3878 fi
3879
3880 ar_default="${cross_prefix}${ar_default}"
3881 cc_default="${cross_prefix}${cc_default}"
3882 cxx_default="${cross_prefix}${cxx_default}"
3883 nm_default="${cross_prefix}${nm_default}"
3884 pkg_config_default="${cross_prefix}${pkg_config_default}"
3885 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3886     ranlib_default="${cross_prefix}${ranlib_default} -D"
3887 else
3888     ranlib_default="${cross_prefix}${ranlib_default}"
3889 fi
3890 strip_default="${cross_prefix}${strip_default}"
3891 windres_default="${cross_prefix}${windres_default}"
3892
3893 sysinclude_default="${sysroot}/usr/include"
3894
3895 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3896     target_exec target_os x86asmexe nvcc
3897 enabled cross_compile || host_cc_default=$cc
3898 set_default host_cc
3899
3900 pkg_config_fail_message=""
3901 if ! $pkg_config --version >/dev/null 2>&1; then
3902     warn "$pkg_config not found, library detection may fail."
3903     pkg_config=false
3904 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3905     pkg_config_fail_message="
3906 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3907 fi
3908
3909 if test $doxygen != $doxygen_default && \
3910   ! $doxygen --version >/dev/null 2>&1; then
3911     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3912 fi
3913
3914 exesuf() {
3915     case $1 in
3916         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3917     esac
3918 }
3919
3920 EXESUF=$(exesuf $target_os)
3921 HOSTEXESUF=$(exesuf $host_os)
3922
3923 # set temporary file name
3924 : ${TMPDIR:=$TEMPDIR}
3925 : ${TMPDIR:=$TMP}
3926 : ${TMPDIR:=/tmp}
3927
3928 if [ -n "$tempprefix" ] ; then
3929     mktemp(){
3930         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3931         echo "$tmpname"
3932         mkdir "$tmpname"
3933     }
3934 elif ! check_cmd mktemp -u XXXXXX; then
3935     # simple replacement for missing mktemp
3936     # NOT SAFE FOR GENERAL USE
3937     mktemp(){
3938         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3939         echo "$tmpname"
3940         mkdir "$tmpname"
3941     }
3942 fi
3943
3944 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3945     die "Unable to create temporary directory in $TMPDIR."
3946
3947 tmpfile(){
3948     tmp="${FFTMPDIR}/test"$2
3949     (set -C; exec > $tmp) 2> /dev/null ||
3950         die "Unable to create temporary file in $FFTMPDIR."
3951     eval $1=$tmp
3952 }
3953
3954 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3955 trap 'exit 2' INT
3956
3957 tmpfile TMPASM .asm
3958 tmpfile TMPC   .c
3959 tmpfile TMPCPP .cpp
3960 tmpfile TMPE   $EXESUF
3961 tmpfile TMPH   .h
3962 tmpfile TMPM   .m
3963 tmpfile TMPO   .o
3964 tmpfile TMPS   .S
3965 tmpfile TMPSH  .sh
3966 tmpfile TMPV   .ver
3967
3968 unset -f mktemp
3969
3970 chmod +x $TMPE
3971
3972 # make sure we can execute files in $TMPDIR
3973 cat > $TMPSH 2>> $logfile <<EOF
3974 #! /bin/sh
3975 EOF
3976 chmod +x $TMPSH >> $logfile 2>&1
3977 if ! $TMPSH >> $logfile 2>&1; then
3978     cat <<EOF
3979 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3980 variable to another directory and make sure that it is not mounted noexec.
3981 EOF
3982     die "Sanity test failed."
3983 fi
3984
3985 armasm_flags(){
3986     for flag; do
3987         case $flag in
3988             # Filter out MSVC cl.exe options from cflags that shouldn't
3989             # be passed to gas-preprocessor
3990             -M[TD]*)                                            ;;
3991             *)                  echo $flag                      ;;
3992         esac
3993    done
3994 }
3995
3996 ccc_flags(){
3997     for flag; do
3998         case $flag in
3999             -std=c99)           echo -c99                       ;;
4000             -mcpu=*)            echo -arch ${flag#*=}           ;;
4001             -mieee)             echo -ieee                      ;;
4002             -O*|-fast)          echo $flag                      ;;
4003             -fno-math-errno)    echo -assume nomath_errno       ;;
4004             -g)                 echo -g3                        ;;
4005             -Wall)              echo -msg_enable level2         ;;
4006             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
4007             -Wl,*)              echo $flag                      ;;
4008             -f*|-W*)                                            ;;
4009             *)                  echo $flag                      ;;
4010         esac
4011    done
4012 }
4013
4014 cparser_flags(){
4015     for flag; do
4016         case $flag in
4017             -Wno-switch)             echo -Wno-switch-enum ;;
4018             -Wno-format-zero-length) ;;
4019             -Wdisabled-optimization) ;;
4020             -Wno-pointer-sign)       echo -Wno-other ;;
4021             *)                       echo $flag ;;
4022         esac
4023     done
4024 }
4025
4026 msvc_common_flags(){
4027     for flag; do
4028         case $flag in
4029             # In addition to specifying certain flags under the compiler
4030             # specific filters, they must be specified here as well or else the
4031             # generic catch all at the bottom will print the original flag.
4032             -Wall)                ;;
4033             -Wextra)              ;;
4034             -std=c99)             ;;
4035             # Common flags
4036             -fomit-frame-pointer) ;;
4037             -g)                   echo -Z7 ;;
4038             -fno-math-errno)      ;;
4039             -fno-common)          ;;
4040             -fno-signed-zeros)    ;;
4041             -fPIC)                ;;
4042             -mthumb)              ;;
4043             -march=*)             ;;
4044             -lz)                  echo zlib.lib ;;
4045             -lx264)               echo libx264.lib ;;
4046             -lstdc++)             ;;
4047             -l*)                  echo ${flag#-l}.lib ;;
4048             -LARGEADDRESSAWARE)   echo $flag ;;
4049             -L*)                  echo -libpath:${flag#-L} ;;
4050             *)                    echo $flag ;;
4051         esac
4052     done
4053 }
4054
4055 msvc_flags(){
4056     msvc_common_flags "$@"
4057     for flag; do
4058         case $flag in
4059             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4060                                        -wd4554 ;;
4061             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4062                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4063                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4064                                        -wd4307 \
4065                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4066         esac
4067     done
4068 }
4069
4070 icl_flags(){
4071     msvc_common_flags "$@"
4072     for flag; do
4073         case $flag in
4074             # Despite what Intel's documentation says -Wall, which is supported
4075             # on Windows, does enable remarks so disable them here.
4076             -Wall)                echo $flag -Qdiag-disable:remark ;;
4077             -std=c99)             echo -Qstd=c99 ;;
4078             -flto)                echo -ipo ;;
4079         esac
4080     done
4081 }
4082
4083 icc_flags(){
4084     for flag; do
4085         case $flag in
4086             -flto)                echo -ipo ;;
4087             *)                    echo $flag ;;
4088         esac
4089     done
4090 }
4091
4092 pgi_flags(){
4093     for flag; do
4094         case $flag in
4095             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4096             -fomit-frame-pointer) echo -Mnoframe ;;
4097             -g)                   echo -gopt ;;
4098             *)                    echo $flag ;;
4099         esac
4100     done
4101 }
4102
4103 suncc_flags(){
4104     for flag; do
4105         case $flag in
4106             -march=*|-mcpu=*)
4107                 case "${flag#*=}" in
4108                     native)                   echo -xtarget=native       ;;
4109                     v9|niagara)               echo -xarch=sparc          ;;
4110                     ultrasparc)               echo -xarch=sparcvis       ;;
4111                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4112                     i586|pentium)             echo -xchip=pentium        ;;
4113                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4114                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4115                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4116                     pentium4*)          echo -xtarget=pentium4           ;;
4117                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4118                     *-sse3)             echo -xarch=sse3                 ;;
4119                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4120                     bonnell)                   echo -xarch=ssse3         ;;
4121                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4122                     westmere)                  echo -xtarget=westmere    ;;
4123                     silvermont)                echo -xarch=sse4_2        ;;
4124                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4125                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4126                                                echo -xarch=avx           ;;
4127                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4128                     btver1)                    echo -xarch=amdsse4a      ;;
4129                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4130                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4131                     k8|opteron|athlon64|athlon-fx)
4132                                                echo -xarch=sse2a         ;;
4133                     athlon*)                   echo -xarch=pentium_proa  ;;
4134                 esac
4135                 ;;
4136             -std=c99)             echo -xc99              ;;
4137             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4138             -fPIC)                echo -KPIC -xcode=pic32 ;;
4139             -W*,*)                echo $flag              ;;
4140             -f*-*|-W*|-mimpure-text)                      ;;
4141             -shared)              echo -G                 ;;
4142             *)                    echo $flag              ;;
4143         esac
4144     done
4145 }
4146
4147 tms470_flags(){
4148     for flag; do
4149         case $flag in
4150             -march=*|-mcpu=*)
4151                 case "${flag#*=}" in
4152                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4153                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4154                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4155                     armv6*|arm11*)          echo -mv=6   ;;
4156                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4157                                             echo -mv=5e  ;;
4158                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4159                 esac
4160                 ;;
4161             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4162             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4163             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4164             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4165             -msoft-float)   echo --float_support=vfplib       ;;
4166             -O[0-3]|-mf=*)  echo $flag                        ;;
4167             -g)             echo -g -mn                       ;;
4168             -pds=*)         echo $flag                        ;;
4169             -D*|-I*)        echo $flag                        ;;
4170             --gcc|--abi=*)  echo $flag                        ;;
4171             -me)            echo $flag                        ;;
4172         esac
4173     done
4174 }
4175
4176 probe_cc(){
4177     pfx=$1
4178     _cc=$2
4179     first=$3
4180
4181     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4182     unset _ld_o _ldflags _ld_lib _ld_path
4183     unset _depflags _DEPCMD _DEPFLAGS
4184     _flags_filter=echo
4185
4186     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4187         true # no-op to avoid reading stdin in following checks
4188     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4189         _type=llvm_gcc
4190         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4191         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4192         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4193         _cflags_speed='-O3'
4194         _cflags_size='-Os'
4195     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4196         _type=gcc
4197         gcc_version=$($_cc --version | head -n1)
4198         gcc_basever=$($_cc -dumpversion)
4199         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4200         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4201         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4202         case $gcc_basever in
4203             2) ;;
4204             2.*) ;;
4205             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4206         esac
4207         if [ "$first" = true ]; then
4208             case $gcc_basever in
4209                 4.2*)
4210                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4211             esac
4212         fi
4213         _cflags_speed='-O3'
4214         _cflags_size='-Os'
4215     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4216         _type=icc
4217         _ident=$($_cc --version | head -n1)
4218         _depflags='-MMD'
4219         _cflags_speed='-O3'
4220         _cflags_size='-Os'
4221         _cflags_noopt='-O1'
4222         _flags_filter=icc_flags
4223     elif $_cc -v 2>&1 | grep -q xlc; then
4224         _type=xlc
4225         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4226         _cflags_speed='-O5'
4227         _cflags_size='-O5 -qcompact'
4228     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4229         _type=ccc
4230         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4231         _DEPFLAGS='-M'
4232         _cflags_speed='-fast'
4233         _cflags_size='-O1'
4234         _flags_filter=ccc_flags
4235     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4236         test -d "$sysroot" || die "No valid sysroot specified."
4237         _type=armcc
4238         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4239         armcc_conf="$PWD/armcc.conf"
4240         $_cc --arm_linux_configure                 \
4241              --arm_linux_config_file="$armcc_conf" \
4242              --configure_sysroot="$sysroot"        \
4243              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4244              die "Error creating armcc configuration file."
4245         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4246         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4247         as_default="${cross_prefix}gcc"
4248         _depflags='-MMD'
4249         _cflags_speed='-O3'
4250         _cflags_size='-Os'
4251     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4252         _type=tms470
4253         _ident=$($_cc -version | head -n1 | tr -s ' ')
4254         _flags='--gcc --abi=eabi -me'
4255         _cc_e='-ppl -fe=$@'
4256         _cc_o='-fe=$@'
4257         _depflags='-ppa -ppd=$(@:.o=.d)'
4258         _cflags_speed='-O3 -mf=5'
4259         _cflags_size='-O3 -mf=2'
4260         _flags_filter=tms470_flags
4261     elif $_cc -v 2>&1 | grep -q clang; then
4262         _type=clang
4263         _ident=$($_cc --version 2>/dev/null | head -n1)
4264         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4265         _cflags_speed='-O3'
4266         _cflags_size='-Oz'
4267     elif $_cc -V 2>&1 | grep -q Sun; then
4268         _type=suncc
4269         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4270         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4271         _DEPFLAGS='-xM1 -xc99'
4272         _ldflags='-std=c99'
4273         _cflags_speed='-O5'
4274         _cflags_size='-O5 -xspace'
4275         _flags_filter=suncc_flags
4276     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4277         _type=pathscale
4278         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4279         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4280         _cflags_speed='-O2'
4281         _cflags_size='-Os'
4282         _flags_filter='filter_out -Wdisabled-optimization'
4283     elif $_cc -v 2>&1 | grep -q Open64; then
4284         _type=open64
4285         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4286         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4287         _cflags_speed='-O2'
4288         _cflags_size='-Os'
4289         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4290     elif $_cc -V 2>&1 | grep -q Portland; then
4291         _type=pgi
4292         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4293         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4294         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4295         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4296         _cflags_noopt="-O"
4297         _flags_filter=pgi_flags
4298     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4299         _type=armasm
4300         _ident=$($_cc | head -n1)
4301         # 4509: "This form of conditional instruction is deprecated"
4302         _flags="-nologo -ignore 4509"
4303         _flags_filter=armasm_flags
4304     elif $_cc 2>&1 | grep -q Intel; then
4305         _type=icl
4306         _ident=$($_cc 2>&1 | head -n1)
4307         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4308         # Not only is O3 broken on 13.x+ but it is slower on all previous
4309         # versions (tested) as well.
4310         _cflags_speed="-O2"
4311         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4312         if $_cc 2>&1 | grep -q Linker; then
4313             _ld_o='-out:$@'
4314         else
4315             _ld_o='-Fe$@'
4316         fi
4317         _cc_o='-Fo$@'
4318         _cc_e='-P'
4319         _flags_filter=icl_flags
4320         _ld_lib='lib%.a'
4321         _ld_path='-libpath:'
4322         # -Qdiag-error to make icl error when seeing certain unknown arguments
4323         _flags='-nologo -Qdiag-error:4044,10157'
4324         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4325         # with MSVC which enables it by default.
4326         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4327         disable stripping
4328     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4329         # lld can emulate multiple different linkers; in ms link.exe mode,
4330         # the -? parameter gives the help output which contains an identifyable
4331         # string, while it gives an error in other modes.
4332         _type=lld-link
4333         # The link.exe mode doesn't have a switch for getting the version,
4334         # but we can force it back to gnu mode and get the version from there.
4335         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4336         _ld_o='-out:$@'
4337         _flags_filter=msvc_flags
4338         _ld_lib='lib%.a'
4339         _ld_path='-libpath:'
4340     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4341         _type=msvc
4342         _ident=$($_cc 2>&1 | head -n1)
4343         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4344         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4345         _cflags_speed="-O2"
4346         _cflags_size="-O1"
4347         _cflags_noopt="-O1"
4348         if $_cc -nologo- 2>&1 | grep -q Linker; then
4349             _ld_o='-out:$@'
4350         else
4351             _ld_o='-Fe$@'
4352         fi
4353         _cc_o='-Fo$@'
4354         _cc_e='-P -Fi$@'
4355         _flags_filter=msvc_flags
4356         _ld_lib='lib%.a'
4357         _ld_path='-libpath:'
4358         _flags='-nologo'
4359         disable stripping
4360     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4361         _type=cparser
4362         _ident=$($_cc --version | head -n1)
4363         _depflags='-MMD'
4364         _cflags_speed='-O4'
4365         _cflags_size='-O2'
4366         _flags_filter=cparser_flags
4367     fi
4368
4369     eval ${pfx}_type=\$_type
4370     eval ${pfx}_ident=\$_ident
4371 }
4372
4373 set_ccvars(){
4374     eval ${1}_C=\${_cc_c-\${${1}_C}}
4375     eval ${1}_E=\${_cc_e-\${${1}_E}}
4376     eval ${1}_O=\${_cc_o-\${${1}_O}}
4377
4378     if [ -n "$_depflags" ]; then
4379         eval ${1}_DEPFLAGS=\$_depflags
4380     else
4381         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4382         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4383         eval DEP${1}FLAGS=\$_flags
4384     fi
4385 }
4386
4387 probe_cc cc "$cc" "true"
4388 cflags_filter=$_flags_filter
4389 cflags_speed=$_cflags_speed
4390 cflags_size=$_cflags_size
4391 cflags_noopt=$_cflags_noopt
4392 add_cflags $_flags $_cflags
4393 cc_ldflags=$_ldflags
4394 set_ccvars CC
4395 set_ccvars CXX
4396
4397 probe_cc hostcc "$host_cc"
4398 host_cflags_filter=$_flags_filter
4399 host_cflags_speed=$_cflags_speed
4400 add_host_cflags  $_flags $_cflags
4401 set_ccvars HOSTCC
4402
4403 test -n "$cc_type" && enable $cc_type ||
4404     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4405
4406 : ${as_default:=$cc}
4407 : ${objcc_default:=$cc}
4408 : ${dep_cc_default:=$cc}
4409 : ${ld_default:=$cc}
4410 : ${host_ld_default:=$host_cc}
4411 set_default ar as objcc dep_cc ld ln_s host_ld windres
4412
4413 probe_cc as "$as"
4414 asflags_filter=$_flags_filter
4415 add_asflags $_flags $_cflags
4416 set_ccvars AS
4417
4418 probe_cc objcc "$objcc"
4419 objcflags_filter=$_flags_filter
4420 add_objcflags $_flags $_cflags
4421 set_ccvars OBJC
4422
4423 probe_cc ld "$ld"
4424 ldflags_filter=$_flags_filter
4425 add_ldflags $_flags $_ldflags
4426 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4427 LD_O=${_ld_o-$LD_O}
4428 LD_LIB=${_ld_lib-$LD_LIB}
4429 LD_PATH=${_ld_path-$LD_PATH}
4430
4431 probe_cc hostld "$host_ld"
4432 host_ldflags_filter=$_flags_filter
4433 add_host_ldflags $_flags $_ldflags
4434 HOSTLD_O=${_ld_o-$HOSTLD_O}
4435
4436 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4437     probe_cc depcc "$dep_cc"
4438     CCDEP=${_DEPCMD:-$DEPCMD}
4439     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4440     DEPCCFLAGS=$_flags
4441 fi
4442
4443 if $ar 2>&1 | grep -q Microsoft; then
4444     arflags="-nologo"
4445     ar_o='-out:$@'
4446 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4447     arflags="rq"
4448     ar_o='$@'
4449 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4450     arflags='-Xany -r -c'
4451     ar_o='$@'
4452 elif $ar 2>&1 | grep -q "\[D\] "; then
4453     arflags="rcD"
4454     ar_o='$@'
4455 else
4456     arflags="rc"
4457     ar_o='$@'
4458 fi
4459
4460 add_cflags $extra_cflags
4461 add_cxxflags $extra_cxxflags
4462 add_objcflags $extra_objcflags
4463 add_asflags $extra_cflags
4464
4465 if test -n "$sysroot"; then
4466     case "$cc_type" in
4467         gcc|llvm_gcc|clang)
4468             add_cppflags --sysroot="$sysroot"
4469             add_ldflags --sysroot="$sysroot"
4470 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4471             add_cppflags -isysroot "$sysroot"
4472             add_ldflags -isysroot "$sysroot"
4473         ;;
4474         tms470)
4475             add_cppflags -I"$sysinclude"
4476             add_ldflags  --sysroot="$sysroot"
4477         ;;
4478     esac
4479 fi
4480
4481 if test "$cpu" = host; then
4482     enabled cross_compile &&
4483         die "--cpu=host makes no sense when cross-compiling."
4484
4485     case "$cc_type" in
4486         gcc|llvm_gcc)
4487             check_native(){
4488                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4489                 sed -n "/cc1.*$1=/{
4490                             s/.*$1=\\([^ ]*\\).*/\\1/
4491                             p
4492                             q
4493                         }" $TMPE
4494             }
4495             cpu=$(check_native -march || check_native -mcpu)
4496         ;;
4497         clang)
4498             check_native(){
4499                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4500                 sed -n "/cc1.*-target-cpu /{
4501                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4502                             p
4503                             q
4504                         }" $TMPE
4505             }
4506             cpu=$(check_native -march)
4507         ;;
4508     esac
4509
4510     test "${cpu:-host}" = host &&
4511         die "--cpu=host not supported with compiler $cc"
4512 fi
4513
4514 # Deal with common $arch aliases
4515 case "$arch" in
4516     aarch64|arm64)
4517         arch="aarch64"
4518     ;;
4519     arm*|iPad*|iPhone*)
4520         arch="arm"
4521     ;;
4522     mips*|IP*)
4523         case "$arch" in
4524         *el)
4525             add_cppflags -EL
4526             add_ldflags -EL
4527         ;;
4528         *eb)
4529             add_cppflags -EB
4530             add_ldflags -EB
4531         ;;
4532         esac
4533         arch="mips"
4534     ;;
4535     parisc*|hppa*)
4536         arch="parisc"
4537     ;;
4538     "Power Macintosh"|ppc*|powerpc*)
4539         arch="ppc"
4540     ;;
4541     s390|s390x)
4542         arch="s390"
4543     ;;
4544     sh4|sh)
4545         arch="sh4"
4546     ;;
4547     sun4*|sparc*)
4548         arch="sparc"
4549     ;;
4550     tilegx|tile-gx)
4551         arch="tilegx"
4552     ;;
4553     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4554         arch="x86"
4555     ;;
4556 esac
4557
4558 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4559 enable $arch
4560
4561 # Add processor-specific flags
4562 if enabled aarch64; then
4563
4564     case $cpu in
4565         armv*)
4566             cpuflags="-march=$cpu"
4567         ;;
4568         *)
4569             cpuflags="-mcpu=$cpu"
4570         ;;
4571     esac
4572
4573 elif enabled alpha; then
4574
4575     cpuflags="-mcpu=$cpu"
4576
4577 elif enabled arm; then
4578
4579     check_arm_arch() {
4580         check_cpp_condition stddef.h \
4581             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4582             $cpuflags
4583     }
4584
4585     probe_arm_arch() {
4586         if   check_arm_arch 4;        then echo armv4
4587         elif check_arm_arch 4T;       then echo armv4t
4588         elif check_arm_arch 5;        then echo armv5
4589         elif check_arm_arch 5E;       then echo armv5e
4590         elif check_arm_arch 5T;       then echo armv5t
4591         elif check_arm_arch 5TE;      then echo armv5te
4592         elif check_arm_arch 5TEJ;     then echo armv5te
4593         elif check_arm_arch 6;        then echo armv6
4594         elif check_arm_arch 6J;       then echo armv6j
4595         elif check_arm_arch 6K;       then echo armv6k
4596         elif check_arm_arch 6Z;       then echo armv6z
4597         elif check_arm_arch 6ZK;      then echo armv6zk
4598         elif check_arm_arch 6T2;      then echo armv6t2
4599         elif check_arm_arch 7;        then echo armv7
4600         elif check_arm_arch 7A  7_A;  then echo armv7-a
4601         elif check_arm_arch 7S;       then echo armv7-a
4602         elif check_arm_arch 7R  7_R;  then echo armv7-r
4603         elif check_arm_arch 7M  7_M;  then echo armv7-m
4604         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4605         elif check_arm_arch 8A  8_A;  then echo armv8-a
4606         fi
4607     }
4608
4609     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4610
4611     case $cpu in
4612         armv*)
4613             cpuflags="-march=$cpu"
4614             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4615         ;;
4616         *)
4617             cpuflags="-mcpu=$cpu"
4618             case $cpu in
4619                 cortex-a*)                               subarch=armv7a  ;;
4620                 cortex-r*)                               subarch=armv7r  ;;
4621                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4622                 arm11*)                                  subarch=armv6   ;;
4623                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4624                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4625                 *)                             subarch=$(probe_arm_arch) ;;
4626             esac
4627         ;;
4628     esac
4629
4630     case "$subarch" in
4631         armv5t*)    enable fast_clz                ;;
4632         armv[6-8]*)
4633             enable fast_clz
4634             disabled fast_unaligned || enable fast_unaligned
4635             ;;
4636     esac
4637
4638 elif enabled avr32; then
4639
4640     case $cpu in
4641         ap7[02]0[0-2])
4642             subarch="avr32_ap"
4643             cpuflags="-mpart=$cpu"
4644         ;;
4645         ap)
4646             subarch="avr32_ap"
4647             cpuflags="-march=$cpu"
4648         ;;
4649         uc3[ab]*)
4650             subarch="avr32_uc"
4651             cpuflags="-mcpu=$cpu"
4652         ;;
4653         uc)
4654             subarch="avr32_uc"
4655             cpuflags="-march=$cpu"
4656         ;;
4657     esac
4658
4659 elif enabled bfin; then
4660
4661     cpuflags="-mcpu=$cpu"
4662
4663 elif enabled mips; then
4664
4665     cpuflags="-march=$cpu"
4666
4667     if [ "$cpu" != "generic" ]; then
4668         disable mips32r2
4669         disable mips32r5
4670         disable mips64r2
4671         disable mips32r6
4672         disable mips64r6
4673         disable loongson2
4674         disable loongson3
4675
4676         case $cpu in
4677             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4678                 enable mips32r2
4679                 disable msa
4680             ;;
4681             p5600|i6400|p6600)
4682                 disable mipsdsp
4683                 disable mipsdspr2
4684             ;;
4685             loongson*)
4686                 enable loongson2
4687                 enable loongson3
4688                 enable local_aligned
4689                 enable simd_align_16
4690                 enable fast_64bit
4691                 enable fast_clz
4692                 enable fast_cmov
4693                 enable fast_unaligned
4694                 disable aligned_stack
4695                 disable mipsfpu
4696                 disable mipsdsp
4697                 disable mipsdspr2
4698                 case $cpu in
4699                     loongson3*)
4700                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4701                     ;;
4702                     loongson2e)
4703                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4704                     ;;
4705                     loongson2f)
4706                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4707                     ;;
4708                 esac
4709             ;;
4710             *)
4711                 # Unknown CPU. Disable everything.
4712                 warn "unknown CPU. Disabling all MIPS optimizations."
4713                 disable mipsfpu
4714                 disable mipsdsp
4715                 disable mipsdspr2
4716                 disable msa
4717                 disable mmi
4718             ;;
4719         esac
4720
4721         case $cpu in
4722             24kc)
4723                 disable mipsfpu
4724                 disable mipsdsp
4725                 disable mipsdspr2
4726             ;;
4727             24kf*)
4728                 disable mipsdsp
4729                 disable mipsdspr2
4730             ;;
4731             24kec|34kc|1004kc)
4732                 disable mipsfpu
4733                 disable mipsdspr2
4734             ;;
4735             24kef*|34kf*|1004kf*)
4736                 disable mipsdspr2
4737             ;;
4738             74kc)
4739                 disable mipsfpu
4740             ;;
4741             p5600)
4742                 enable mips32r5
4743                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4744             ;;
4745             i6400)
4746                 enable mips64r6
4747                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4748             ;;
4749             p6600)
4750                 enable mips64r6
4751                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4752             ;;
4753         esac
4754     else
4755         # We do not disable anything. Is up to the user to disable the unwanted features.
4756         warn 'generic cpu selected'
4757     fi
4758
4759 elif enabled ppc; then
4760
4761     disable ldbrx
4762
4763     case $(tolower $cpu) in
4764         601|ppc601|powerpc601)
4765             cpuflags="-mcpu=601"
4766             disable altivec
4767         ;;
4768         603*|ppc603*|powerpc603*)
4769             cpuflags="-mcpu=603"
4770             disable altivec
4771         ;;
4772         604*|ppc604*|powerpc604*)
4773             cpuflags="-mcpu=604"
4774             disable altivec
4775         ;;
4776         g3|75*|ppc75*|powerpc75*)
4777             cpuflags="-mcpu=750"
4778             disable altivec
4779         ;;
4780         g4|745*|ppc745*|powerpc745*)
4781             cpuflags="-mcpu=7450"
4782             disable vsx
4783         ;;
4784         74*|ppc74*|powerpc74*)
4785             cpuflags="-mcpu=7400"
4786             disable vsx
4787         ;;
4788         g5|970|ppc970|powerpc970)
4789             cpuflags="-mcpu=970"
4790             disable vsx
4791         ;;
4792         power[3-6]*)
4793             cpuflags="-mcpu=$cpu"
4794             disable vsx
4795         ;;
4796         power[7-8]*)
4797             cpuflags="-mcpu=$cpu"
4798         ;;
4799         cell)
4800             cpuflags="-mcpu=cell"
4801             enable ldbrx
4802             disable vsx
4803         ;;
4804         e500mc)
4805             cpuflags="-mcpu=e500mc"
4806             disable altivec
4807         ;;
4808         e500v2)
4809             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4810             disable altivec
4811             disable dcbzl
4812         ;;
4813         e500)
4814             cpuflags="-mcpu=8540 -mhard-float"
4815             disable altivec
4816             disable dcbzl
4817         ;;
4818     esac
4819
4820 elif enabled sparc; then
4821
4822     case $cpu in
4823         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4824             cpuflags="-mcpu=$cpu"
4825         ;;
4826         ultrasparc*|niagara[234])
4827             cpuflags="-mcpu=$cpu"
4828         ;;
4829     esac
4830
4831 elif enabled x86; then
4832
4833     case $cpu in
4834         i[345]86|pentium)
4835             cpuflags="-march=$cpu"
4836             disable i686
4837             disable mmx
4838         ;;
4839         # targets that do NOT support nopl and conditional mov (cmov)
4840         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4841             cpuflags="-march=$cpu"
4842             disable i686
4843         ;;
4844         # targets that do support nopl and conditional mov (cmov)
4845         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4846         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4847         |amdfam10|barcelona|b[dt]ver*|znver*)
4848             cpuflags="-march=$cpu"
4849             enable i686
4850             enable fast_cmov
4851         ;;
4852         # targets that do support conditional mov but on which it's slow
4853         pentium4|pentium4m|prescott|nocona)
4854             cpuflags="-march=$cpu"
4855             enable i686
4856             disable fast_cmov
4857         ;;
4858     esac
4859
4860 fi
4861
4862 if [ "$cpu" != generic ]; then
4863     add_cflags  $cpuflags
4864     add_asflags $cpuflags
4865     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4866 fi
4867
4868 # compiler sanity check
4869 check_exec <<EOF
4870 int main(void){ return 0; }
4871 EOF
4872 if test "$?" != 0; then
4873     echo "$cc is unable to create an executable file."
4874     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4875         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4876         echo "Only do this if you know what cross compiling means."
4877     fi
4878     die "C compiler test failed."
4879 fi
4880
4881 add_cppflags -D_ISOC99_SOURCE
4882 add_cxxflags -D__STDC_CONSTANT_MACROS
4883 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4884
4885 # some compilers silently accept -std=c11, so we also need to check that the
4886 # version macro is defined properly
4887 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4888     add_cflags -std=c11 ||
4889     check_cflags -std=c99
4890
4891 check_cppflags -D_FILE_OFFSET_BITS=64
4892 check_cppflags -D_LARGEFILE_SOURCE
4893
4894 add_host_cppflags -D_ISOC99_SOURCE
4895 check_host_cflags -std=c99
4896 check_host_cflags -Wall
4897 check_host_cflags $host_cflags_speed
4898
4899 check_64bit(){
4900     arch32=$1
4901     arch64=$2
4902     expr=$3
4903     check_code cc "" "int test[2*($expr) - 1]" &&
4904         subarch=$arch64 || subarch=$arch32
4905 }
4906
4907 case "$arch" in
4908     aarch64|alpha|ia64)
4909         spic=$shared
4910     ;;
4911     mips)
4912         check_64bit mips mips64 '_MIPS_SIM > 1'
4913         spic=$shared
4914     ;;
4915     parisc)
4916         check_64bit parisc parisc64 'sizeof(void *) > 4'
4917         spic=$shared
4918     ;;
4919     ppc)
4920         check_64bit ppc ppc64 'sizeof(void *) > 4'
4921         spic=$shared
4922     ;;
4923     s390)
4924         check_64bit s390 s390x 'sizeof(void *) > 4'
4925         spic=$shared
4926     ;;
4927     sparc)
4928         check_64bit sparc sparc64 'sizeof(void *) > 4'
4929         spic=$shared
4930     ;;
4931     x86)
4932         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4933         # Treat x32 as x64 for now. Note it also needs spic=$shared
4934         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4935             subarch=x86_64
4936         if test "$subarch" = "x86_64"; then
4937             spic=$shared
4938         fi
4939     ;;
4940     ppc)
4941         check_cc <<EOF && subarch="ppc64"
4942         int test[(int)sizeof(char*) - 7];
4943 EOF
4944     ;;
4945 esac
4946
4947 enable $subarch
4948 enabled spic && enable_weak pic
4949
4950 enabled x86_64 && objformat=elf64 || objformat="elf32"
4951
4952 # OS specific
4953 case $target_os in
4954     aix)
4955         SHFLAGS=-shared
4956         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4957         enabled shared && add_ldflags -Wl,-brtl
4958         ;;
4959     android)
4960         disable symver
4961         enable section_data_rel_ro
4962         SLIB_INSTALL_NAME='$(SLIBNAME)'
4963         SLIB_INSTALL_LINKS=
4964         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4965         ;;
4966     haiku)
4967         prefix_default="/boot/common"
4968         network_extralibs="-lnetwork"
4969         host_extralibs=
4970         ;;
4971     sunos)
4972         SHFLAGS='-shared -Wl,-h,$$(@F)'
4973         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4974         network_extralibs="-lsocket -lnsl"
4975         add_cppflags -D__EXTENSIONS__
4976         # When using suncc to build, the Solaris linker will mark
4977         # an executable with each instruction set encountered by
4978         # the Solaris assembler.  As our libraries contain their own
4979         # guards for processor-specific code, instead suppress
4980         # generation of the HWCAPS ELF section on Solaris x86 only.
4981         enabled_all suncc x86 &&
4982             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4983             add_ldflags -Wl,-M,mapfile
4984         nm_default='nm -P -g'
4985         version_script='-M'
4986         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4987         ;;
4988     netbsd)
4989         disable symver
4990         oss_indev_extralibs="-lossaudio"
4991         oss_outdev_extralibs="-lossaudio"
4992         enabled gcc || check_ldflags -Wl,-zmuldefs
4993         ;;
4994     openbsd|bitrig)
4995         disable symver
4996         SHFLAGS='-shared'
4997         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4998         SLIB_INSTALL_LINKS=
4999         oss_indev_extralibs="-lossaudio"
5000         oss_outdev_extralibs="-lossaudio"
5001         ;;
5002     dragonfly)
5003         disable symver
5004         ;;
5005     freebsd)
5006         ;;
5007     bsd/os)
5008         add_extralibs -lpoll -lgnugetopt
5009         strip="strip -d"
5010         ;;
5011     darwin)
5012         enabled ppc && add_asflags -force_cpusubtype_ALL
5013         install_name_dir_default='$(SHLIBDIR)'
5014         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5015         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5016         strip="${strip} -x"
5017         add_ldflags -Wl,-dynamic,-search_paths_first
5018         check_cflags -Werror=partial-availability
5019         SLIBSUF=".dylib"
5020         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5021         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5022         enabled x86_64 && objformat="macho64" || objformat="macho32"
5023         enabled_any pic shared x86_64 ||
5024             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5025         check_header dispatch/dispatch.h &&
5026             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5027         version_script='-exported_symbols_list'
5028         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5029         ;;
5030     msys*)
5031         die "Native MSYS builds are discouraged, please use the MINGW environment."
5032         ;;
5033     mingw32*|mingw64*)
5034         if test $target_os = "mingw32ce"; then
5035             disable network
5036         else
5037             target_os=mingw32
5038         fi
5039         LIBTARGET=i386
5040         if enabled x86_64; then
5041             LIBTARGET="i386:x86-64"
5042         elif enabled arm; then
5043             LIBTARGET=arm-wince
5044         fi
5045         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5046         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5047         shlibdir_default="$bindir_default"
5048         SLIBPREF=""
5049         SLIBSUF=".dll"
5050         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5051         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5052         dlltool="${cross_prefix}dlltool"
5053         if check_cmd lib.exe -list; then
5054             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5055             if enabled x86_64; then
5056                 LIBTARGET=x64
5057             fi
5058         elif check_cmd $dlltool --version; then
5059             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5060         fi
5061         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5062         SLIB_INSTALL_LINKS=
5063         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5064         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5065         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
5066         enabled x86_64 && objformat="win64" || objformat="win32"
5067         ranlib=:
5068         enable dos_paths
5069         check_ldflags -Wl,--nxcompat,--dynamicbase
5070         # Lets work around some stupidity in binutils.
5071         # ld will strip relocations from executables even though we need them
5072         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5073         # however ld then forgets what the entry point should be (oops) so we
5074         # have to manually (re)set it.
5075         if enabled x86_32; then
5076             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5077         elif enabled x86_64; then
5078             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5079             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5080             # Set image base >4GB for extra entropy with HEASLR
5081             add_ldexeflags -Wl,--image-base,0x140000000
5082             append SHFLAGS -Wl,--image-base,0x180000000
5083         fi
5084         ;;
5085     win32|win64)
5086         disable symver
5087         if enabled shared; then
5088             # Link to the import library instead of the normal static library
5089             # for shared libs.
5090             LD_LIB='%.lib'
5091             # Cannot build both shared and static libs with MSVC or icl.
5092             disable static
5093         fi
5094         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5095         shlibdir_default="$bindir_default"
5096         SLIBPREF=""
5097         SLIBSUF=".dll"
5098         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5099         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5100         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5101         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5102         SLIB_INSTALL_LINKS=
5103         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5104         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5105         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5106         enabled x86_64 && objformat="win64" || objformat="win32"
5107         ranlib=:
5108         enable dos_paths
5109         ;;
5110     cygwin*)
5111         target_os=cygwin
5112         shlibdir_default="$bindir_default"
5113         SLIBPREF="cyg"
5114         SLIBSUF=".dll"
5115         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5116         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5117         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5118         SLIB_INSTALL_LINKS=
5119         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5120         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5121         enabled x86_64 && objformat="win64" || objformat="win32"
5122         enable dos_paths
5123         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5124         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5125         ;;
5126     *-dos|freedos|opendos)
5127         network_extralibs="-lsocket"
5128         objformat="coff"
5129         enable dos_paths
5130         add_cppflags -U__STRICT_ANSI__
5131         ;;
5132     linux)
5133         enable section_data_rel_ro
5134         enabled_any arm aarch64 && enable_weak linux_perf
5135         ;;
5136     irix*)
5137         target_os=irix
5138         ranlib="echo ignoring ranlib"
5139         ;;
5140     os/2*)
5141         strip="lxlite -CS"
5142         striptype=""
5143         objformat="aout"
5144         add_cppflags -D_GNU_SOURCE
5145         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5146         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5147         LIBSUF="_s.a"
5148         SLIBPREF=""
5149         SLIBSUF=".dll"
5150         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5151         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5152         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5153             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5154             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5155             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5156             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5157         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5158             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5159         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5160         SLIB_INSTALL_LINKS=
5161         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5162         enable dos_paths
5163         enable_weak os2threads
5164         ;;
5165     gnu/kfreebsd)
5166         add_cppflags -D_BSD_SOURCE
5167         ;;
5168     gnu)
5169         ;;
5170     qnx)
5171         add_cppflags -D_QNX_SOURCE
5172         network_extralibs="-lsocket"
5173         ;;
5174     symbian)
5175         SLIBSUF=".dll"
5176         enable dos_paths
5177         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5178         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5179         add_ldflags -Wl,--target1-abs,--no-undefined \
5180                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5181                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5182         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5183                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5184                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5185         ;;
5186     osf1)
5187         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5188         ;;
5189     minix)
5190         ;;
5191     none)
5192         ;;
5193     *)
5194         die "Unknown OS '$target_os'."
5195         ;;
5196 esac
5197
5198 # test if creating links works
5199 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5200 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5201 mkdir "$link_dest"
5202 $ln_s "$link_dest" "$link_name"
5203 touch "$link_dest/test_file"
5204 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5205     # create link to source path
5206     [ -e src ] && rm src
5207     $ln_s "$source_path" src
5208     source_link=src
5209 else
5210     # creating directory links doesn't work
5211     # fall back to using the full source path
5212     source_link="$source_path"
5213 fi
5214 # cleanup
5215 rm -r "$link_dest"
5216 rm -r "$link_name"
5217
5218 # determine libc flavour
5219
5220 probe_libc(){
5221     pfx=$1
5222     pfx_no_=${pfx%_}
5223     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5224     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5225         eval ${pfx}libc_type=uclibc
5226         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5227     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5228         eval ${pfx}libc_type=glibc
5229         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5230     # MinGW headers can be installed on Cygwin, so check for newlib first.
5231     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5232         eval ${pfx}libc_type=newlib
5233         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5234     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5235     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5236         eval ${pfx}libc_type=mingw64
5237         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5238             add_compat msvcrt/snprintf.o
5239             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5240         fi
5241         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5242         eval test \$${pfx_no_}cc_type = "gcc" &&
5243             add_${pfx}cppflags -D__printf__=__gnu_printf__
5244     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5245          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5246         eval ${pfx}libc_type=mingw32
5247         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5248             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5249             die "ERROR: MinGW32 runtime version must be >= 3.15."
5250         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5251         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5252             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5253         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5254             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5255         eval test \$${pfx_no_}cc_type = "gcc" &&
5256             add_${pfx}cppflags -D__printf__=__gnu_printf__
5257     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5258         eval ${pfx}libc_type=msvcrt
5259         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5260             if [ "$pfx" = host_ ]; then
5261                 add_host_cppflags -Dsnprintf=_snprintf
5262             else
5263                 add_compat strtod.o strtod=avpriv_strtod
5264                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5265                                              _snprintf=avpriv_snprintf  \
5266                                              vsnprintf=avpriv_vsnprintf
5267             fi
5268         fi
5269         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5270         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5271         # 0x601 by default unless something else is set by the user.
5272         # This can easily lead to us detecting functions only present
5273         # in such new versions and producing binaries requiring windows 7.0.
5274         # Therefore explicitly set the default to XP unless the user has
5275         # set something else on the command line.
5276         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5277         # family. For these cases, configure is free to use any functions
5278         # found in the SDK headers by default. (Alternatively, we could force
5279         # _WIN32_WINNT to 0x0602 in that case.)
5280         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5281             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5282 #ifdef WINAPI_FAMILY
5283 #include <winapifamily.h>
5284 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5285 #error not desktop
5286 #endif
5287 #endif
5288 EOF
5289         if [ "$pfx" = "" ]; then
5290             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5291             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5292         fi
5293     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5294         eval ${pfx}libc_type=klibc
5295     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5296         eval ${pfx}libc_type=bionic
5297     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5298         eval ${pfx}libc_type=solaris
5299         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5300     fi
5301     check_${pfx}cc <<EOF
5302 #include <time.h>
5303 void *v = localtime_r;
5304 EOF
5305 test "$?" != 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
5306 #include <time.h>
5307 void *v = localtime_r;
5308 EOF
5309
5310 }
5311
5312 probe_libc
5313 test -n "$libc_type" && enable libc_$libc_type
5314 probe_libc host_
5315 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5316
5317 # hacks for compiler/libc/os combinations
5318
5319 case $libc_type in
5320     bionic)
5321         add_compat strtod.o strtod=avpriv_strtod
5322         ;;
5323     glibc)
5324         if enabled tms470; then
5325             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5326             add_cppflags -D__USER_LABEL_PREFIX__=
5327             add_cppflags -D__builtin_memset=memset
5328             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5329             add_cflags   -pds=48    # incompatible redefinition of macro
5330         elif enabled ccc; then
5331             add_ldflags -Wl,-z,now  # calls to libots crash without this
5332         fi
5333         ;;
5334 esac
5335
5336 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5337     add_cppflags '-I\$(SRC_PATH)/compat/float'
5338
5339 esc(){
5340     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5341 }
5342
5343 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5344
5345 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5346
5347 set_default libdir
5348 : ${shlibdir_default:="$libdir"}
5349 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5350
5351 set_default $PATHS_LIST
5352 set_default nm
5353
5354 # we need to build at least one lib type
5355 if ! enabled_any static shared; then
5356     cat <<EOF
5357 At least one library type must be built.
5358 Specify --enable-static to build the static libraries or --enable-shared to
5359 build the shared libraries as well. To only build the shared libraries specify
5360 --disable-static in addition to --enable-shared.
5361 EOF
5362     exit 1
5363 fi
5364
5365 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5366
5367 enable_weak_pic() {
5368     disabled pic && return
5369     enable pic
5370     add_cppflags -DPIC
5371     case "$target_os" in
5372     mingw*|cygwin*)
5373         ;;
5374     *)
5375         add_cflags -fPIC
5376         ;;
5377     esac
5378     add_asflags  -fPIC
5379 }
5380
5381 enabled pic && enable_weak_pic
5382
5383 check_cc <<EOF || die "Symbol mangling check failed."
5384 int ff_extern;
5385 EOF
5386 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5387 extern_prefix=${sym%%ff_extern*}
5388
5389 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5390
5391 _restrict=
5392 for restrict_keyword in restrict __restrict__ __restrict; do
5393     check_cc <<EOF && _restrict=$restrict_keyword && break
5394 void foo(char * $restrict_keyword p);
5395 EOF
5396 done
5397
5398 check_cc <<EOF && enable pragma_deprecated
5399 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5400 EOF
5401
5402 check_cc <<EOF && enable attribute_packed
5403 struct { int x; } __attribute__((packed)) x;
5404 EOF
5405
5406 check_cc <<EOF && enable attribute_may_alias
5407 union { int x; } __attribute__((may_alias)) x;
5408 EOF
5409
5410 check_cc <<EOF || die "endian test failed"
5411 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5412 EOF
5413 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5414
5415 check_cc <<EOF && enable const_nan
5416 #include <math.h>
5417 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5418 EOF
5419
5420 if ! enabled ppc64 || enabled bigendian; then
5421     disable vsx
5422 fi
5423
5424 check_gas() {
5425     log "check_gas using '$as' as AS"
5426     # :vararg is used on aarch64, arm and ppc altivec
5427     check_as <<EOF || return 1
5428 .macro m n, y:vararg=0
5429 \n: .int \y
5430 .endm
5431 m x
5432 EOF
5433     # .altmacro is only used in arm asm
5434     ! enabled arm || check_as <<EOF || return 1
5435 .altmacro
5436 EOF
5437     enable gnu_as
5438     return 0
5439 }
5440
5441 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5442     nogas=:
5443     enabled_any arm aarch64 && nogas=die
5444     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5445     as_noop=-v
5446
5447     case $as_type in
5448         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5449         gcc)  gaspp_as_type=gas ;;
5450         *)    gaspp_as_type=$as_type ;;
5451     esac
5452
5453     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5454
5455     test "${as#*gas-preprocessor.pl}" != "$as" ||
5456     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5457         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5458
5459     if ! check_gas ; then
5460         as=${gas:=$as}
5461         check_gas || \
5462             $nogas "GNU assembler not found, install/update gas-preprocessor"
5463     fi
5464
5465     check_as <<EOF && enable as_func
5466 .func test
5467 .endfunc
5468 EOF
5469 fi
5470
5471 check_inline_asm inline_asm_labels '"1:\n"'
5472
5473 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5474
5475 if enabled aarch64; then
5476     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5477     # internal assembler in clang 3.3 does not support this instruction
5478     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5479     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5480
5481     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5482
5483 elif enabled alpha; then
5484
5485     check_cflags -mieee
5486
5487 elif enabled arm; then
5488
5489     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5490
5491     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5492 float func(float a, float b){ return a+b; }
5493 EOF
5494
5495     enabled thumb && check_cflags -mthumb || check_cflags -marm
5496
5497     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5498         enable vfp_args
5499     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5500         enable vfp_args
5501     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5502         case "${cross_prefix:-$cc}" in
5503             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5504             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5505 __asm__ (".eabi_attribute 28, 1");
5506 int main(void) { return 0; }
5507 EOF
5508         esac
5509         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5510     fi
5511
5512     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5513     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5514     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5515     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5516     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5517     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5518     enabled setend  && check_insn setend  'setend be'
5519
5520     [ $target_os = linux ] || [ $target_os = android ] ||
5521         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5522             $ARCH_EXT_LIST_ARM
5523
5524     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5525
5526     check_as <<EOF && enable as_dn_directive
5527 ra .dn d0.i16
5528 .unreq ra
5529 EOF
5530     check_as <<EOF && enable as_fpu_directive
5531 .fpu neon
5532 EOF
5533
5534     # llvm's integrated assembler supports .object_arch from llvm 3.5
5535     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5536         check_as <<EOF && enable as_object_arch
5537 .object_arch armv4
5538 EOF
5539
5540     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5541
5542 elif enabled mips; then
5543
5544     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5545     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5546     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5547
5548     # Enable minimum ISA based on selected options
5549     if enabled mips64; then
5550         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5551         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5552         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5553     else
5554         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5555         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5556         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5557         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5558     fi
5559
5560     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5561     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5562     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5563     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5564     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5565
5566     if enabled bigendian && enabled msa; then
5567         disable msa
5568     fi
5569
5570 elif enabled parisc; then
5571
5572     if enabled gcc; then
5573         case $($cc -dumpversion) in
5574             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5575         esac
5576     fi
5577
5578 elif enabled ppc; then
5579
5580     enable local_aligned
5581
5582     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5583     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5584     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5585     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5586
5587     # AltiVec flags: The FSF version of GCC differs from the Apple version
5588     if enabled altivec; then
5589         check_cflags -maltivec -mabi=altivec &&
5590         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5591         check_cflags -faltivec
5592
5593         # check if our compiler supports Motorola AltiVec C API
5594         check_cc <<EOF || disable altivec
5595 $inc_altivec_h
5596 int main(void) {
5597     vector signed int v1 = (vector signed int) { 0 };
5598     vector signed int v2 = (vector signed int) { 1 };
5599     v1 = vec_add(v1, v2);
5600     return 0;
5601 }
5602 EOF
5603
5604         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5605     fi
5606
5607     if enabled vsx; then
5608         check_cflags -mvsx &&
5609         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5610     fi
5611
5612     if enabled power8; then
5613         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5614     fi
5615
5616 elif enabled x86; then
5617
5618     check_builtin rdtsc    intrin.h   "__rdtsc()"
5619     check_builtin mm_empty mmintrin.h "_mm_empty()"
5620
5621     enable local_aligned
5622
5623     # check whether EBP is available on x86
5624     # As 'i' is stored on the stack, this program will crash
5625     # if the base pointer is used to access it because the
5626     # base pointer is cleared in the inline assembly code.
5627     check_exec_crash <<EOF && enable ebp_available
5628 volatile int i=0;
5629 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5630 return i;
5631 EOF
5632
5633     # check whether EBX is available on x86
5634     check_inline_asm ebx_available '""::"b"(0)' &&
5635         check_inline_asm ebx_available '"":::"%ebx"'
5636
5637     # check whether xmm clobbers are supported
5638     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5639
5640     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5641         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5642
5643     # check whether binutils is new enough to compile SSSE3/MMXEXT
5644     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5645     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5646
5647     probe_x86asm(){
5648         x86asmexe_probe=$1
5649         if check_cmd $x86asmexe_probe -v; then
5650             x86asmexe=$x86asmexe_probe
5651             x86asm_type=nasm
5652             x86asm_debug="-g -F dwarf"
5653         elif check_cmd $x86asmexe_probe --version; then
5654             x86asmexe=$x86asmexe_probe
5655             x86asm_type=yasm
5656             x86asm_debug="-g dwarf2"
5657         fi
5658         check_x86asm "movbe ecx, [5]" && enable x86asm
5659     }
5660
5661     if ! disabled_any asm mmx x86asm; then
5662         disable x86asm
5663         for program in $x86asmexe nasm yasm; do
5664             probe_x86asm $program && break
5665         done
5666         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5667         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5668         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5669         X86ASMFLAGS="-f $objformat"
5670         enabled pic               && append X86ASMFLAGS "-DPIC"
5671         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5672         case "$objformat" in
5673             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5674         esac
5675
5676         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5677         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5678         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5679         check_x86asm "CPU amdnop" || disable cpunop
5680     fi
5681
5682     case "$cpu" in
5683         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5684             disable fast_clz
5685         ;;
5686     esac
5687
5688 fi
5689
5690 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5691
5692 check_ldflags -Wl,--as-needed
5693 check_ldflags -Wl,-z,noexecstack
5694
5695 if ! disabled network; then
5696     check_func getaddrinfo $network_extralibs
5697     check_func inet_aton $network_extralibs
5698
5699     check_type netdb.h "struct addrinfo"
5700     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5701     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5702     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5703     check_type poll.h "struct pollfd"
5704     check_type netinet/sctp.h "struct sctp_event_subscribe"
5705     check_struct "sys/socket.h" "struct msghdr" msg_flags
5706     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5707     check_type netinet/in.h "struct sockaddr_in6"
5708     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5709     check_type "sys/types.h sys/socket.h" socklen_t
5710
5711     # Prefer arpa/inet.h over winsock2
5712     if check_header arpa/inet.h ; then
5713         check_func closesocket
5714     elif check_header winsock2.h ; then
5715         check_func_headers winsock2.h closesocket -lws2 &&
5716             network_extralibs="-lws2" ||
5717         { check_func_headers winsock2.h closesocket -lws2_32 &&
5718             network_extralibs="-lws2_32"; } || disable winsock2_h network
5719         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5720
5721         check_type ws2tcpip.h socklen_t
5722         check_type ws2tcpip.h "struct addrinfo"
5723         check_type ws2tcpip.h "struct group_source_req"
5724         check_type ws2tcpip.h "struct ip_mreq_source"
5725         check_type ws2tcpip.h "struct ipv6_mreq"
5726         check_type winsock2.h "struct pollfd"
5727         check_struct winsock2.h "struct sockaddr" sa_len
5728         check_type ws2tcpip.h "struct sockaddr_in6"
5729         check_type ws2tcpip.h "struct sockaddr_storage"
5730     else
5731         disable network
5732     fi
5733 fi
5734
5735 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5736 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5737 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5738 check_builtin sarestart signal.h "SA_RESTART"
5739 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5740 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5741 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5742 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5743
5744 case "$custom_allocator" in
5745     jemalloc)
5746         # jemalloc by default does not use a prefix
5747         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5748     ;;
5749     tcmalloc)
5750         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5751         malloc_prefix=tc_
5752     ;;
5753 esac
5754
5755 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5756 check_func  ${malloc_prefix}memalign            && enable memalign
5757 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5758
5759 check_func  access
5760 check_func_headers stdlib.h arc4random
5761 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5762 check_func  fcntl
5763 check_func  fork
5764 check_func  gethrtime
5765 check_func  getopt
5766 check_func  getrusage
5767 check_func  gettimeofday
5768 check_func  isatty
5769 check_func  mach_absolute_time
5770 check_func  mkstemp
5771 check_func  mmap
5772 check_func  mprotect
5773 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5774 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5775 check_func  sched_getaffinity
5776 check_func  setrlimit
5777 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5778 check_func  strerror_r
5779 check_func  sysconf
5780 check_func  sysctl
5781 check_func  usleep
5782
5783 check_func_headers conio.h kbhit
5784 check_func_headers io.h setmode
5785 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5786 check_func_headers stdlib.h getenv
5787 check_func_headers sys/stat.h lstat
5788
5789 check_func_headers windows.h GetProcessAffinityMask
5790 check_func_headers windows.h GetProcessTimes
5791 check_func_headers windows.h GetSystemTimeAsFileTime
5792 check_func_headers windows.h LoadLibrary
5793 check_func_headers windows.h MapViewOfFile
5794 check_func_headers windows.h PeekNamedPipe
5795 check_func_headers windows.h SetConsoleTextAttribute
5796 check_func_headers windows.h SetConsoleCtrlHandler
5797 check_func_headers windows.h Sleep
5798 check_func_headers windows.h VirtualAlloc
5799 check_struct windows.h "CONDITION_VARIABLE" Ptr
5800 check_func_headers glob.h glob
5801 enabled xlib &&
5802     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5803
5804 check_header d3d11.h
5805 check_header direct.h
5806 check_header dirent.h
5807 check_header dlfcn.h
5808 check_header dxgidebug.h
5809 check_header dxva.h
5810 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5811 check_header io.h
5812 check_header libcrystalhd/libcrystalhd_if.h
5813 check_header mach/mach_time.h
5814 check_header malloc.h
5815 check_header net/udplite.h
5816 check_header poll.h
5817 check_header sys/mman.h
5818 check_header sys/param.h
5819 check_header sys/resource.h
5820 check_header sys/select.h
5821 check_header sys/time.h
5822 check_header sys/un.h
5823 check_header termios.h
5824 check_header unistd.h
5825 check_header valgrind/valgrind.h
5826 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5827 check_header windows.h
5828 check_header X11/extensions/XvMClib.h
5829 check_header asm/types.h
5830
5831 # it seems there are versions of clang in some distros that try to use the
5832 # gcc headers, which explodes for stdatomic
5833 # so we also check that atomics actually work here
5834 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5835
5836 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5837 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5838 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5839 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5840
5841 enabled appkit       && check_apple_framework AppKit
5842 enabled audiotoolbox && check_apple_framework AudioToolbox
5843 enabled avfoundation && check_apple_framework AVFoundation
5844 enabled coreimage    && check_apple_framework CoreImage
5845 enabled videotoolbox && check_apple_framework VideoToolbox
5846
5847 check_apple_framework CoreFoundation
5848 check_apple_framework CoreMedia
5849 check_apple_framework CoreVideo
5850
5851 enabled avfoundation && {
5852     disable coregraphics applicationservices
5853     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5854     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5855
5856 enabled videotoolbox && {
5857     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5858     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5859 }
5860
5861 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5862
5863 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5864 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5865 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5866 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5867 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5868
5869 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5870 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5871 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5872 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5873 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5874 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5875 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5876 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5877 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5878
5879 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5880
5881 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5882
5883 if ! disabled w32threads && ! enabled pthreads; then
5884     check_func_headers "windows.h process.h" _beginthreadex &&
5885         enable w32threads || disable w32threads
5886     if ! enabled w32threads && enabled winrt; then
5887         check_func_headers "windows.h" CreateThread &&
5888             enable w32threads || disable w32threads
5889     fi
5890 fi
5891
5892 # check for some common methods of building with pthread support
5893 # do this before the optional library checks as some of them require pthreads
5894 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5895     if check_lib pthreads pthread.h pthread_join   -pthread &&
5896        check_lib pthreads pthread.h pthread_create -pthread; then
5897         add_cflags -pthread
5898     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5899          check_lib pthreads pthread.h pthread_create -pthreads; then
5900         add_cflags -pthreads
5901     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5902          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5903         add_cflags -ldl -pthread
5904     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5905          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5906         :
5907     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5908          check_lib pthreads pthread.h pthread_create -lpthread; then
5909         :
5910     elif check_func pthread_join && check_func pthread_create; then
5911         enable pthreads
5912     fi
5913     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5914 fi
5915
5916
5917 if enabled pthreads; then
5918   check_func pthread_cancel $pthreads_extralibs
5919 fi
5920
5921 enabled pthreads &&
5922     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5923
5924 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5925 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5926 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5927
5928 # On some systems dynamic loading requires no extra linker flags
5929 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5930
5931 check_lib libm math.h sin -lm
5932
5933 atan2f_args=2
5934 copysign_args=2
5935 hypot_args=2
5936 ldexpf_args=2
5937 powf_args=2
5938
5939 for func in $MATH_FUNCS; do
5940     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5941 done
5942
5943 for func in $COMPLEX_FUNCS; do
5944     eval check_complexfunc $func \${${func}_args:-1}
5945 done
5946
5947 # these are off by default, so fail if requested and not available
5948 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5949 enabled cuvid             && { enabled cuda ||
5950                                die "ERROR: CUVID requires CUDA"; }
5951 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5952 enabled decklink          && { require_header DeckLinkAPI.h &&
5953                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5954 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5955 enabled frei0r            && require_header frei0r.h
5956 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5957 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5958 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5959 enabled ladspa            && require_header ladspa.h
5960 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5961 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5962 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5963 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5964 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5965                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5966                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5967 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5968 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5969 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5970 enabled libfdk_aac        && { use_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5971                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5972                                  warn "using libfdk without pkg-config"; } }
5973 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"
5974 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5975 enabled fontconfig        && enable libfontconfig
5976 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5977 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5978 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5979 enabled libgme            && { use_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5980                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5981 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5982                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5983                                done || die "ERROR: libgsm not found"; }
5984 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5985 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5986 # While it may appear that require is being used as a pkg-config
5987 # fallback for libmfx, it is actually being used to detect a different
5988 # installation route altogether.  If libmfx is installed via the Intel
5989 # Media SDK or Intel Media Server Studio, these don't come with
5990 # pkg-config support.  Instead, users should make sure that the build
5991 # can find the libraries and headers through other means.
5992 enabled libmfx            && { use_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5993                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5994 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5995 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5996 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5997 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5998                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5999                                die "ERROR: libnpp not found"; }
6000 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6001 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6002 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6003                                { use_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6004                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6005                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6006 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6007 enabled libopenjpeg       && { use_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6008                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6009 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6010 enabled libopus           && {
6011     enabled libopus_decoder && {
6012         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6013     }
6014     enabled libopus_encoder && {
6015         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6016     }
6017 }
6018 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6019 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6020 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6021 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6022 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6023 enabled libsmbclient      && { use_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6024                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6025 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6026 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6027 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6028 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
6029 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6030 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6031 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6032                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6033                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6034 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6035 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6036 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
6037 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6038 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6039                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6040
6041 enabled libvpx            && {
6042     enabled libvpx_vp8_decoder && {
6043         use_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6044             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
6045                 die "ERROR: libvpx decoder version must be >=0.9.1";
6046     }
6047     enabled libvpx_vp8_encoder && {
6048         use_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6049             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
6050                 die "ERROR: libvpx encoder version must be >=0.9.7";
6051     }
6052     enabled libvpx_vp9_decoder && {
6053         use_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6054             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
6055     }
6056     enabled libvpx_vp9_encoder && {
6057         use_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6058             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6059     }
6060     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6061         die "libvpx enabled but no supported decoders found"
6062     fi
6063 }
6064
6065 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6066 enabled libwebp           && {
6067     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6068     enabled libwebp_anim_encoder && use_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6069 enabled libx264           && { use_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6070                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6071                                  warn "using libx264 without pkg-config"; } } &&
6072                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6073                              { check_cpp_condition x264.h "X264_MPEG2" &&
6074                                enable libx262; }
6075 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6076                              require_cpp_condition x265.h "X265_BUILD >= 68"
6077 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6078 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6079 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
6080 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6081 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6082                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6083                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6084 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6085 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6086 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6087                                { ! enabled cross_compile &&
6088                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6089                                  add_ldflags -L/opt/vc/lib/ &&
6090                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6091                                die "ERROR: mmal not found" &&
6092                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6093 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6094                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6095                                die "ERROR: openal not found"; } &&
6096                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6097                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6098 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6099                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6100                                die "ERROR: opencl not found"; } &&
6101                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6102                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6103                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6104 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6105                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6106                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6107                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6108                                die "ERROR: opengl not found."
6109                              }
6110 enabled omx               && require_header OMX_Core.h
6111 enabled omx_rpi           && { check_header OMX_Core.h ||
6112                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6113                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6114 enabled openssl           && { use_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6115                                use_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6116                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6117                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6118                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6119                                die "ERROR: openssl not found"; }
6120 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
6121                                  die "ERROR : Rockchip MPP was not found."; } &&
6122                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
6123                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
6124                                { enabled libdrm ||
6125                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6126                              }
6127
6128 if enabled gcrypt; then
6129     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6130     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6131         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6132         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6133         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6134             die "ERROR: gcrypt not found"
6135         add_cflags $gcrypt_cflags
6136     else
6137         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6138     fi
6139 fi
6140
6141 if enabled sdl2; then
6142     SDL2_CONFIG="${cross_prefix}sdl2-config"
6143     if check_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6144         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6145             disable sdl2
6146     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6147         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6148         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6149         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6150         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6151         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6152             enable sdl2
6153     fi
6154     if test $target_os = "mingw32"; then
6155         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6156     fi
6157 fi
6158
6159 if enabled decklink; then
6160     case $target_os in
6161         mingw32*|mingw64*|win32|win64)
6162             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6163             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6164             ;;
6165     esac
6166 fi
6167
6168 enabled securetransport &&
6169     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6170     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6171         disable securetransport
6172
6173 enabled schannel &&
6174     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6175     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6176     schannel_extralibs="-lsecur32" ||
6177         disable schannel
6178
6179 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6180 enabled makeinfo \
6181     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6182     && enable makeinfo_html || disable makeinfo_html
6183 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6184 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6185 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6186 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6187
6188 # check V4L2 codecs available in the API
6189 check_header linux/fb.h
6190 check_header linux/videodev2.h
6191 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6192 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6193 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6194 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6195 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6196 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6197 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6198 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6199 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6200 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6201 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6202
6203 check_header sys/videoio.h
6204 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6205
6206 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6207 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6208 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6209 # w32api 3.12 had it defined wrong
6210 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6211
6212 check_type "dshow.h" IBaseFilter
6213
6214 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6215 { check_header dev/bktr/ioctl_meteor.h &&
6216   check_header dev/bktr/ioctl_bt848.h; } ||
6217 { check_header machine/ioctl_meteor.h &&
6218   check_header machine/ioctl_bt848.h; } ||
6219 { check_header dev/video/meteor/ioctl_meteor.h &&
6220   check_header dev/video/bktr/ioctl_bt848.h; } ||
6221 check_header dev/ic/bt8xx.h
6222
6223 if check_struct sys/soundcard.h audio_buf_info bytes; then
6224     enable_sanitized sys/soundcard.h
6225 else
6226     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6227     #include <sys/soundcard.h>
6228     audio_buf_info abc;
6229 EOF
6230 fi
6231 check_header soundcard.h
6232
6233 enabled alsa && use_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6234     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6235
6236 enabled libjack &&
6237     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6238
6239 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6240
6241 if enabled libcdio; then
6242     use_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6243     use_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6244     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6245     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6246     die "ERROR: No usable libcdio/cdparanoia found"
6247 fi
6248
6249 enabled libxcb && use_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6250     disable libxcb_shm libxcb_shape libxcb_xfixes
6251
6252 if enabled libxcb; then
6253     enabled libxcb_shm    && use_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6254     enabled libxcb_shape  && use_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6255     enabled libxcb_xfixes && use_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6256 fi
6257
6258 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6259
6260 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6261 # the desktop api partition
6262 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6263 #ifdef WINAPI_FAMILY
6264 #include <winapifamily.h>
6265 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6266 #error desktop, not uwp
6267 #else
6268 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6269 #endif
6270 #else
6271 #error no family set
6272 #endif
6273 EOF
6274
6275 enabled vaapi &&
6276     check_lib vaapi va/va.h vaInitialize -lva
6277
6278 enabled vaapi &&
6279     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6280     disable vaapi
6281
6282 enabled vaapi &&
6283     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6284
6285 enabled vaapi &&
6286     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6287
6288 enabled vaapi &&
6289     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6290     enable vaapi_1
6291
6292 enabled vdpau &&
6293     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6294     disable vdpau
6295
6296 enabled vdpau &&
6297     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6298
6299 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6300
6301 if enabled x86; then
6302     case $target_os in
6303         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6304             ;;
6305         *)
6306             disable cuda cuvid nvenc
6307             ;;
6308     esac
6309 else
6310     disable cuda cuvid nvenc
6311 fi
6312
6313 enabled nvenc &&
6314     check_cc -I$source_path <<EOF || disable nvenc
6315 #include "compat/nvenc/nvEncodeAPI.h"
6316 NV_ENCODE_API_FUNCTION_LIST flist;
6317 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6318 int main(void) { return 0; }
6319 EOF
6320
6321 # Funny iconv installations are not unusual, so check it after all flags have been set
6322 if enabled libc_iconv; then
6323     check_func_headers iconv.h iconv
6324 elif enabled iconv; then
6325     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6326 fi
6327
6328 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6329
6330 # add some useful compiler flags if supported
6331 check_cflags -Wdeclaration-after-statement
6332 check_cflags -Wall
6333 check_cflags -Wdisabled-optimization
6334 check_cflags -Wpointer-arith
6335 check_cflags -Wredundant-decls
6336 check_cflags -Wwrite-strings
6337 check_cflags -Wtype-limits
6338 check_cflags -Wundef
6339 check_cflags -Wmissing-prototypes
6340 check_cflags -Wno-pointer-to-int-cast
6341 check_cflags -Wstrict-prototypes
6342 check_cflags -Wempty-body
6343
6344 if enabled extra_warnings; then
6345     check_cflags -Wcast-qual
6346     check_cflags -Wextra
6347     check_cflags -Wpedantic
6348 fi
6349
6350 check_disable_warning(){
6351     warning_flag=-W${1#-Wno-}
6352     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6353 }
6354
6355 test_cflags -Werror=unused-command-line-argument &&
6356     append unknown_warning_flags "-Werror=unused-command-line-argument"
6357 test_cflags -Werror=unknown-warning-option &&
6358     append unknown_warning_flags "-Werror=unknown-warning-option"
6359
6360 check_disable_warning -Wno-parentheses
6361 check_disable_warning -Wno-switch
6362 check_disable_warning -Wno-format-zero-length
6363 check_disable_warning -Wno-pointer-sign
6364 check_disable_warning -Wno-unused-const-variable
6365 check_disable_warning -Wno-bool-operation
6366
6367 check_disable_warning_headers(){
6368     warning_flag=-W${1#-Wno-}
6369     test_cflags $warning_flag && add_cflags_headers $1
6370 }
6371
6372 check_disable_warning_headers -Wno-deprecated-declarations
6373 check_disable_warning_headers -Wno-unused-variable
6374
6375 check_cc <<EOF && enable blocks_extension
6376 void (^block)(void);
6377 EOF
6378
6379 # add some linker flags
6380 check_ldflags -Wl,--warn-common
6381 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6382 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6383 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6384 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6385
6386 # add some strip flags
6387 check_stripflags -x
6388
6389 enabled neon_clobber_test &&
6390     check_ldflags -Wl,--wrap,avcodec_open2              \
6391                   -Wl,--wrap,avcodec_decode_audio4      \
6392                   -Wl,--wrap,avcodec_decode_video2      \
6393                   -Wl,--wrap,avcodec_decode_subtitle2   \
6394                   -Wl,--wrap,avcodec_encode_audio2      \
6395                   -Wl,--wrap,avcodec_encode_video2      \
6396                   -Wl,--wrap,avcodec_encode_subtitle    \
6397                   -Wl,--wrap,avcodec_send_packet        \
6398                   -Wl,--wrap,avcodec_receive_packet     \
6399                   -Wl,--wrap,avcodec_send_frame         \
6400                   -Wl,--wrap,avcodec_receive_frame      \
6401                   -Wl,--wrap,swr_convert                \
6402                   -Wl,--wrap,avresample_convert ||
6403     disable neon_clobber_test
6404
6405 enabled xmm_clobber_test &&
6406     check_ldflags -Wl,--wrap,avcodec_open2              \
6407                   -Wl,--wrap,avcodec_decode_audio4      \
6408                   -Wl,--wrap,avcodec_decode_video2      \
6409                   -Wl,--wrap,avcodec_decode_subtitle2   \
6410                   -Wl,--wrap,avcodec_encode_audio2      \
6411                   -Wl,--wrap,avcodec_encode_video2      \
6412                   -Wl,--wrap,avcodec_encode_subtitle    \
6413                   -Wl,--wrap,avcodec_send_packet        \
6414                   -Wl,--wrap,avcodec_receive_packet     \
6415                   -Wl,--wrap,avcodec_send_frame         \
6416                   -Wl,--wrap,avcodec_receive_frame      \
6417                   -Wl,--wrap,swr_convert                \
6418                   -Wl,--wrap,avresample_convert         \
6419                   -Wl,--wrap,sws_scale ||
6420     disable xmm_clobber_test
6421
6422 check_ld "cc" <<EOF && enable proper_dce
6423 extern const int array[512];
6424 static inline int func(void) { return array[0]; }
6425 int main(void) { return 0; }
6426 EOF
6427
6428 if enabled proper_dce; then
6429     echo "X { local: *; };" > $TMPV
6430     if test_ldflags -Wl,${version_script},$TMPV; then
6431         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6432         check_cc <<EOF && enable symver_asm_label
6433 void ff_foo(void) __asm__ ("av_foo@VERSION");
6434 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6435 EOF
6436         check_cc <<EOF && enable symver_gnu_asm
6437 __asm__(".symver ff_foo,av_foo@VERSION");
6438 void ff_foo(void) {}
6439 EOF
6440     fi
6441 fi
6442
6443 if [ -z "$optflags" ]; then
6444     if enabled small; then
6445         optflags=$cflags_size
6446     elif enabled optimizations; then
6447         optflags=$cflags_speed
6448     else
6449         optflags=$cflags_noopt
6450     fi
6451 fi
6452
6453 if [ -z "$nvccflags" ]; then
6454     nvccflags=$nvccflags_default
6455 fi
6456
6457 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6458     nvccflags="$nvccflags -m64"
6459 else
6460     nvccflags="$nvccflags -m32"
6461 fi
6462
6463 check_optflags(){
6464     check_cflags "$@"
6465     enabled lto && check_ldflags "$@"
6466 }
6467
6468 check_optflags $optflags
6469 check_optflags -fno-math-errno
6470 check_optflags -fno-signed-zeros
6471
6472 if enabled lto; then
6473     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6474     check_cflags  -flto
6475     check_ldflags -flto $cpuflags
6476     disable inline_asm_direct_symbol_refs
6477 fi
6478
6479 enabled ftrapv && check_cflags -ftrapv
6480
6481 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6482 int x;
6483 EOF
6484
6485
6486 if enabled icc; then
6487     # Just warnings, no remarks
6488     check_cflags -w1
6489     # -wd: Disable following warnings
6490     # 144, 167, 556: -Wno-pointer-sign
6491     # 188: enumerated type mixed with another type
6492     # 1292: attribute "foo" ignored
6493     # 1419: external declaration in primary source file
6494     # 10006: ignoring unknown option -fno-signed-zeros
6495     # 10148: ignoring unknown option -Wno-parentheses
6496     # 10156: ignoring option '-W'; no argument required
6497     # 13200: No EMMS instruction before call to function
6498     # 13203: No EMMS instruction before return from function
6499     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6500     # 11030: Warning unknown option --as-needed
6501     # 10156: ignoring option '-export'; no argument required
6502     check_ldflags -wd10156,11030
6503     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6504     enable ebp_available
6505     # The test above does not test linking
6506     enabled lto && disable symver_asm_label
6507     if enabled x86_32; then
6508         icc_version=$($cc -dumpversion)
6509         test ${icc_version%%.*} -ge 11 &&
6510             check_cflags -falign-stack=maintain-16-byte ||
6511             disable aligned_stack
6512     fi
6513 elif enabled ccc; then
6514     # disable some annoying warnings
6515     add_cflags -msg_disable bitnotint
6516     add_cflags -msg_disable mixfuncvoid
6517     add_cflags -msg_disable nonstandcast
6518     add_cflags -msg_disable unsupieee
6519 elif enabled gcc; then
6520     check_optflags -fno-tree-vectorize
6521     check_cflags -Werror=format-security
6522     check_cflags -Werror=implicit-function-declaration
6523     check_cflags -Werror=missing-prototypes
6524     check_cflags -Werror=return-type
6525     check_cflags -Werror=vla
6526     check_cflags -Wformat
6527     check_cflags -fdiagnostics-color=auto
6528     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6529 elif enabled llvm_gcc; then
6530     check_cflags -mllvm -stack-alignment=16
6531 elif enabled clang; then
6532     check_cflags -mllvm -stack-alignment=16
6533     check_cflags -mstack-alignment=16
6534     check_cflags -Qunused-arguments
6535     check_cflags -Werror=implicit-function-declaration
6536     check_cflags -Werror=missing-prototypes
6537     check_cflags -Werror=return-type
6538 elif enabled cparser; then
6539     add_cflags -Wno-missing-variable-declarations
6540     add_cflags -Wno-empty-statement
6541 elif enabled armcc; then
6542     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6543     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6544     # 2523: use of inline assembly is deprecated
6545     add_cflags -W${armcc_opt},--diag_suppress=2523
6546     add_cflags -W${armcc_opt},--diag_suppress=1207
6547     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6548     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6549     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6550     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6551 elif enabled tms470; then
6552     add_cflags -pds=824 -pds=837
6553     disable inline_asm
6554 elif enabled pathscale; then
6555     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6556     disable inline_asm
6557 elif enabled_any msvc icl; then
6558     enabled x86_32 && disable aligned_stack
6559     enabled_all x86_32 debug && add_cflags -Oy-
6560     enabled debug && add_ldflags -debug
6561     enable pragma_deprecated
6562     if enabled icl; then
6563         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6564         # (correctly) on icl 13.x.
6565         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6566             add_cflags -Qansi-alias
6567         # Some inline asm is not compilable in debug
6568         if enabled debug; then
6569             disable ebp_available
6570             disable ebx_available
6571         fi
6572     fi
6573     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6574     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6575     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6576     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6577     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6578     # MSVC 2013 and newer can handle it fine.
6579     # If this declspec fails, force including stdlib.h before the restrict redefinition
6580     # happens in config.h.
6581     if [ $_restrict != restrict ]; then
6582         check_cc <<EOF || add_cflags -FIstdlib.h
6583 __declspec($_restrict) void* foo(int);
6584 EOF
6585     fi
6586     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6587     # Issue has been fixed in MSVC v19.00.24218.
6588     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6589         check_cflags -d2SSAOptimizer-
6590     # enable utf-8 source processing on VS2015 U2 and newer
6591     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6592         add_cflags -utf-8
6593 fi
6594
6595 for pfx in "" host_; do
6596     varname=${pfx%_}cc_type
6597     eval "type=\$$varname"
6598     if [ "$type" = "msvc" ]; then
6599         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6600 static inline int foo(int a) { return a; }
6601 EOF
6602     fi
6603 done
6604
6605 case $as_type in
6606     clang)
6607         add_asflags -Qunused-arguments
6608     ;;
6609 esac
6610
6611 case $ld_type in
6612     clang)
6613         check_ldflags -Qunused-arguments
6614     ;;
6615 esac
6616
6617 case $target_os in
6618     osf1)
6619         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6620     ;;
6621 esac
6622
6623 enable frame_thread_encoder
6624
6625 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6626
6627 check_deps $CONFIG_LIST       \
6628            $CONFIG_EXTRA      \
6629            $HAVE_LIST         \
6630            $ALL_COMPONENTS    \
6631
6632 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"
6633
6634
6635 if test $target_os = "haiku"; then
6636     disable memalign
6637     disable posix_memalign
6638 fi
6639
6640 flatten_extralibs(){
6641     unset nested_entries
6642     list_name=$1
6643     eval list=\$${1}
6644     for entry in $list; do
6645         entry_copy=$entry
6646         resolve entry_copy
6647         append nested_entries $(filter '*_extralibs' $entry_copy)
6648         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6649         eval $entry="\$flat_entries"
6650     done
6651     append $list_name "$nested_entries"
6652
6653     resolve nested_entries
6654     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6655         flatten_extralibs $list_name
6656     fi
6657 }
6658
6659 for linkunit in $LIBRARY_LIST; do
6660     unset current_extralibs
6661     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6662     for comp in ${components}; do
6663         enabled $comp || continue
6664         comp_extralibs="${comp}_extralibs"
6665         append current_extralibs $comp_extralibs
6666     done
6667     eval prepend ${linkunit}_extralibs $current_extralibs
6668 done
6669
6670 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6671     flatten_extralibs ${linkunit}_extralibs
6672     unique  ${linkunit}_extralibs
6673     resolve ${linkunit}_extralibs
6674     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
6675 done
6676
6677 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6678
6679 for thread in $THREADS_LIST; do
6680     if enabled $thread; then
6681         test -n "$thread_type" &&
6682             die "ERROR: Only one thread type must be selected." ||
6683             thread_type="$thread"
6684     fi
6685 done
6686
6687 if disabled stdatomic_h; then
6688     if enabled atomics_gcc; then
6689         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6690     elif enabled atomics_win32; then
6691         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6692     elif enabled atomics_suncc; then
6693         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6694     elif enabled pthreads; then
6695         add_compat atomics/pthread/stdatomic.o
6696         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6697     else
6698         enabled threads && die "Threading is enabled, but no atomics are available"
6699         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6700     fi
6701 fi
6702
6703 # Check if requested libraries were found.
6704 for lib in $AUTODETECT_LIBS; do
6705     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6706 done
6707
6708 enabled zlib && add_cppflags -DZLIB_CONST
6709
6710 # conditional library dependencies, in linking order
6711 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6712 enabled afir_filter         && prepend avfilter_deps "avcodec"
6713 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6714 enabled aresample_filter    && prepend avfilter_deps "swresample"
6715 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6716 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6717 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6718 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6719 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6720 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6721 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6722 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6723 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6724 enabled pan_filter          && prepend avfilter_deps "swresample"
6725 enabled pp_filter           && prepend avfilter_deps "postproc"
6726 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6727 enabled resample_filter && prepend avfilter_deps "avresample"
6728 enabled sab_filter          && prepend avfilter_deps "swscale"
6729 enabled scale_filter    && prepend avfilter_deps "swscale"
6730 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6731 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6732 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6733 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6734 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6735 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6736 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6737 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6738 enabled spp_filter          && prepend avfilter_deps "avcodec"
6739 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6740 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6741 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6742
6743 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6744
6745 #FIXME
6746 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6747
6748 enabled opus_decoder    && prepend avcodec_deps "swresample"
6749
6750 expand_deps(){
6751     lib_deps=${1}_deps
6752     eval "deps=\$$lib_deps"
6753     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6754     unique $lib_deps
6755 }
6756
6757 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6758 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6759
6760 map 'expand_deps $v' $LIBRARY_LIST
6761
6762 license="LGPL version 2.1 or later"
6763 if enabled nonfree; then
6764     license="nonfree and unredistributable"
6765 elif enabled gplv3; then
6766     license="GPL version 3 or later"
6767 elif enabled lgplv3; then
6768     license="LGPL version 3 or later"
6769 elif enabled gpl; then
6770     license="GPL version 2 or later"
6771 fi
6772
6773 if test "$quiet" != "yes"; then
6774
6775 echo "install prefix            $prefix"
6776 echo "source path               $source_path"
6777 echo "C compiler                $cc"
6778 echo "C library                 $libc_type"
6779 if test "$host_cc" != "$cc"; then
6780     echo "host C compiler           $host_cc"
6781     echo "host C library            $host_libc_type"
6782 fi
6783 echo "ARCH                      $arch ($cpu)"
6784 if test "$build_suffix" != ""; then
6785     echo "build suffix              $build_suffix"
6786 fi
6787 if test "$progs_suffix" != ""; then
6788     echo "progs suffix              $progs_suffix"
6789 fi
6790 if test "$extra_version" != ""; then
6791     echo "version string suffix     $extra_version"
6792 fi
6793 echo "big-endian                ${bigendian-no}"
6794 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6795 if enabled x86; then
6796     echo "standalone assembly       ${x86asm-no}"
6797     echo "x86 assembler             ${x86asmexe}"
6798     echo "MMX enabled               ${mmx-no}"
6799     echo "MMXEXT enabled            ${mmxext-no}"
6800     echo "3DNow! enabled            ${amd3dnow-no}"
6801     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6802     echo "SSE enabled               ${sse-no}"
6803     echo "SSSE3 enabled             ${ssse3-no}"
6804     echo "AESNI enabled             ${aesni-no}"
6805     echo "AVX enabled               ${avx-no}"
6806     echo "AVX2 enabled              ${avx2-no}"
6807     echo "XOP enabled               ${xop-no}"
6808     echo "FMA3 enabled              ${fma3-no}"
6809     echo "FMA4 enabled              ${fma4-no}"
6810     echo "i686 features enabled     ${i686-no}"
6811     echo "CMOV is fast              ${fast_cmov-no}"
6812     echo "EBX available             ${ebx_available-no}"
6813     echo "EBP available             ${ebp_available-no}"
6814 fi
6815 if enabled aarch64; then
6816     echo "NEON enabled              ${neon-no}"
6817     echo "VFP enabled               ${vfp-no}"
6818 fi
6819 if enabled arm; then
6820     echo "ARMv5TE enabled           ${armv5te-no}"
6821     echo "ARMv6 enabled             ${armv6-no}"
6822     echo "ARMv6T2 enabled           ${armv6t2-no}"
6823     echo "VFP enabled               ${vfp-no}"
6824     echo "NEON enabled              ${neon-no}"
6825     echo "THUMB enabled             ${thumb-no}"
6826 fi
6827 if enabled mips; then
6828     echo "MIPS FPU enabled          ${mipsfpu-no}"
6829     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6830     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6831     echo "MIPS MSA enabled          ${msa-no}"
6832     echo "LOONGSON MMI enabled      ${mmi-no}"
6833 fi
6834 if enabled ppc; then
6835     echo "AltiVec enabled           ${altivec-no}"
6836     echo "VSX enabled               ${vsx-no}"
6837     echo "POWER8 enabled            ${power8-no}"
6838     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6839     echo "dcbzl available           ${dcbzl-no}"
6840 fi
6841 echo "debug symbols             ${debug-no}"
6842 echo "strip symbols             ${stripping-no}"
6843 echo "optimize for size         ${small-no}"
6844 echo "optimizations             ${optimizations-no}"
6845 echo "static                    ${static-no}"
6846 echo "shared                    ${shared-no}"
6847 echo "postprocessing support    ${postproc-no}"
6848 echo "network support           ${network-no}"
6849 echo "threading support         ${thread_type-no}"
6850 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6851 echo "texi2html enabled         ${texi2html-no}"
6852 echo "perl enabled              ${perl-no}"
6853 echo "pod2man enabled           ${pod2man-no}"
6854 echo "makeinfo enabled          ${makeinfo-no}"
6855 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6856 test -n "$random_seed" &&
6857     echo "random seed               ${random_seed}"
6858 echo
6859
6860 echo "External libraries:"
6861 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6862 echo
6863
6864 echo "External libraries providing hardware acceleration:"
6865 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6866 echo
6867
6868 echo "Libraries:"
6869 print_enabled '' $LIBRARY_LIST | print_in_columns
6870 echo
6871
6872 echo "Programs:"
6873 print_enabled '' $PROGRAM_LIST | print_in_columns
6874 echo
6875
6876 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6877     echo "Enabled ${type}s:"
6878     eval list=\$$(toupper $type)_LIST
6879     print_enabled '_*' $list | print_in_columns
6880     echo
6881 done
6882
6883 if test -n "$ignore_tests"; then
6884     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6885     echo "Ignored FATE tests:"
6886     echo $ignore_tests | print_in_columns
6887     echo
6888 fi
6889
6890 echo "License: $license"
6891
6892 echo "Creating configuration files ..."
6893
6894 fi # test "$quiet" != "yes"
6895
6896 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6897
6898 enabled stripping || strip="echo skipping strip"
6899 enabled stripping || striptype=""
6900
6901 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6902
6903 cat > ffbuild/config.mak <<EOF
6904 # Automatically generated by configure - do not modify!
6905 ifndef FFMPEG_CONFIG_MAK
6906 FFMPEG_CONFIG_MAK=1
6907 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6908 prefix=$prefix
6909 LIBDIR=\$(DESTDIR)$libdir
6910 SHLIBDIR=\$(DESTDIR)$shlibdir
6911 INCDIR=\$(DESTDIR)$incdir
6912 BINDIR=\$(DESTDIR)$bindir
6913 DATADIR=\$(DESTDIR)$datadir
6914 DOCDIR=\$(DESTDIR)$docdir
6915 MANDIR=\$(DESTDIR)$mandir
6916 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6917 INSTALL_NAME_DIR=$install_name_dir
6918 SRC_PATH=$source_path
6919 SRC_LINK=$source_link
6920 ifndef MAIN_MAKEFILE
6921 SRC_PATH:=\$(SRC_PATH:.%=..%)
6922 endif
6923 CC_IDENT=$cc_ident
6924 ARCH=$arch
6925 INTRINSICS=$intrinsics
6926 CC=$cc
6927 CXX=$cxx
6928 AS=$as
6929 OBJCC=$objcc
6930 LD=$ld
6931 DEPCC=$dep_cc
6932 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6933 DEPAS=$as
6934 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6935 X86ASM=$x86asmexe
6936 DEPX86ASM=$x86asmexe
6937 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6938 AR=$ar
6939 ARFLAGS=$arflags
6940 AR_O=$ar_o
6941 RANLIB=$ranlib
6942 STRIP=$strip
6943 STRIPTYPE=$striptype
6944 NVCC=$nvcc
6945 CP=cp -p
6946 LN_S=$ln_s
6947 CPPFLAGS=$CPPFLAGS
6948 CFLAGS=$CFLAGS
6949 CXXFLAGS=$CXXFLAGS
6950 OBJCFLAGS=$OBJCFLAGS
6951 ASFLAGS=$ASFLAGS
6952 NVCCFLAGS=$nvccflags
6953 AS_C=$AS_C
6954 AS_O=$AS_O
6955 OBJCC_C=$OBJCC_C
6956 OBJCC_E=$OBJCC_E
6957 OBJCC_O=$OBJCC_O
6958 CC_C=$CC_C
6959 CC_E=$CC_E
6960 CC_O=$CC_O
6961 CXX_C=$CXX_C
6962 CXX_O=$CXX_O
6963 NVCC_C=$NVCC_C
6964 NVCC_O=$NVCC_O
6965 LD_O=$LD_O
6966 X86ASM_O=$X86ASM_O
6967 LD_LIB=$LD_LIB
6968 LD_PATH=$LD_PATH
6969 DLLTOOL=$dlltool
6970 WINDRES=$windres
6971 DEPWINDRES=$dep_cc
6972 DOXYGEN=$doxygen
6973 LDFLAGS=$LDFLAGS
6974 LDEXEFLAGS=$LDEXEFLAGS
6975 LDLIBFLAGS=$LDLIBFLAGS
6976 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6977 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6978 X86ASMFLAGS=$X86ASMFLAGS
6979 BUILDSUF=$build_suffix
6980 PROGSSUF=$progs_suffix
6981 FULLNAME=$FULLNAME
6982 LIBPREF=$LIBPREF
6983 LIBSUF=$LIBSUF
6984 LIBNAME=$LIBNAME
6985 SLIBPREF=$SLIBPREF
6986 SLIBSUF=$SLIBSUF
6987 EXESUF=$EXESUF
6988 EXTRA_VERSION=$extra_version
6989 CCDEP=$CCDEP
6990 CXXDEP=$CXXDEP
6991 CCDEP_FLAGS=$CCDEP_FLAGS
6992 ASDEP=$ASDEP
6993 ASDEP_FLAGS=$ASDEP_FLAGS
6994 X86ASMDEP=$X86ASMDEP
6995 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6996 CC_DEPFLAGS=$CC_DEPFLAGS
6997 AS_DEPFLAGS=$AS_DEPFLAGS
6998 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6999 HOSTCC=$host_cc
7000 HOSTLD=$host_ld
7001 HOSTCFLAGS=$host_cflags
7002 HOSTCPPFLAGS=$host_cppflags
7003 HOSTEXESUF=$HOSTEXESUF
7004 HOSTLDFLAGS=$host_ldflags
7005 HOSTEXTRALIBS=$host_extralibs
7006 DEPHOSTCC=$host_cc
7007 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7008 HOSTCCDEP=$HOSTCCDEP
7009 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7010 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7011 HOSTCC_C=$HOSTCC_C
7012 HOSTCC_O=$HOSTCC_O
7013 HOSTLD_O=$HOSTLD_O
7014 TARGET_EXEC=$target_exec $target_exec_args
7015 TARGET_PATH=$target_path
7016 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7017 CFLAGS-ffplay=${sdl2_cflags}
7018 CFLAGS_HEADERS=$CFLAGS_HEADERS
7019 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7020 EXTRALIBS=$extralibs
7021 COMPAT_OBJS=$compat_objs
7022 INSTALL=$install
7023 LIBTARGET=${LIBTARGET}
7024 SLIBNAME=${SLIBNAME}
7025 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7026 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7027 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7028 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7029 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7030 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7031 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7032 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7033 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7034 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7035 NOREDZONE_FLAGS=$noredzone_flags
7036 LIBFUZZER_PATH=$libfuzzer_path
7037 IGNORE_TESTS=$ignore_tests
7038 EOF
7039
7040 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7041
7042 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7043     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7044 done
7045
7046 cat > $TMPH <<EOF
7047 /* Automatically generated by configure - do not modify! */
7048 #ifndef FFMPEG_CONFIG_H
7049 #define FFMPEG_CONFIG_H
7050 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7051 #define FFMPEG_LICENSE "$(c_escape $license)"
7052 #define CONFIG_THIS_YEAR 2017
7053 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7054 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7055 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7056 #define av_restrict $_restrict
7057 #define EXTERN_PREFIX "${extern_prefix}"
7058 #define EXTERN_ASM ${extern_prefix}
7059 #define BUILDSUF "$build_suffix"
7060 #define SLIBSUF "$SLIBSUF"
7061 #define HAVE_MMX2 HAVE_MMXEXT
7062 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7063 EOF
7064
7065 test -n "$assert_level" &&
7066     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7067
7068 test -n "$malloc_prefix" &&
7069     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7070
7071 if enabled x86asm; then
7072     append config_files $TMPASM
7073     printf '' >$TMPASM
7074 fi
7075
7076 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7077
7078
7079 mkdir -p doc
7080 mkdir -p tests
7081 mkdir -p tests/api
7082 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7083
7084 print_config ARCH_   "$config_files" $ARCH_LIST
7085 print_config HAVE_   "$config_files" $HAVE_LIST
7086 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7087                                      $CONFIG_EXTRA      \
7088                                      $ALL_COMPONENTS    \
7089
7090 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7091 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7092
7093 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7094 cp_if_changed $TMPH config.h
7095 touch ffbuild/.config
7096
7097 enabled x86asm && cp_if_changed $TMPASM config.asm
7098
7099 cat > $TMPH <<EOF
7100 /* Generated by ffconf */
7101 #ifndef AVUTIL_AVCONFIG_H
7102 #define AVUTIL_AVCONFIG_H
7103 EOF
7104
7105 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7106
7107 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7108
7109 cp_if_changed $TMPH libavutil/avconfig.h
7110
7111 # generate the lists of enabled components
7112 print_enabled_components(){
7113     file=$1
7114     struct_name=$2
7115     name=$3
7116     shift 3
7117     echo "static const $struct_name * const $name[] = {" > $TMPH
7118     for c in $*; do
7119         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7120     done
7121     echo "    NULL };" >> $TMPH
7122     cp_if_changed $TMPH $file
7123 }
7124
7125 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7126 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7127
7128 if test -n "$WARNINGS"; then
7129     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7130     enabled fatal_warnings && exit 1
7131 fi
7132
7133 # Settings for pkg-config files
7134
7135 cat > ffbuild/config.sh <<EOF
7136 # Automatically generated by configure - do not modify!
7137 shared=$shared
7138 build_suffix=$build_suffix
7139 prefix=$prefix
7140 libdir=$libdir
7141 incdir=$incdir
7142 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7143 source_path=${source_path}
7144 LIBPREF=${LIBPREF}
7145 LIBSUF=${LIBSUF}
7146 extralibs_avutil="$avutil_extralibs"
7147 extralibs_avcodec="$avcodec_extralibs"
7148 extralibs_avformat="$avformat_extralibs"
7149 extralibs_avdevice="$avdevice_extralibs"
7150 extralibs_avfilter="$avfilter_extralibs"
7151 extralibs_avresample="$avresample_extralibs"
7152 extralibs_postproc="$postproc_extralibs"
7153 extralibs_swscale="$swscale_extralibs"
7154 extralibs_swresample="$swresample_extralibs"
7155 EOF
7156
7157 for lib in $LIBRARY_LIST; do
7158     lib_deps="$(eval echo \$${lib}_deps)"
7159     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7160 done