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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --enable-jni             enable JNI support [no]
 221   --enable-ladspa          enable LADSPA audio filtering [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --disable-lzma           disable lzma [autodetect]
 287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 289   --enable-mediacodec      enable Android MediaCodec support [no]
 290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 291   --enable-openal          enable OpenAL 1.1 capture support [no]
 292   --enable-opencl          enable OpenCL code
 293   --enable-opengl          enable OpenGL rendering [no]
 294   --enable-openssl         enable openssl, needed for https support
 295                            if gnutls is not used [no]
 296   --disable-sndio          disable sndio support [autodetect]
 297   --disable-schannel       disable SChannel SSP, needed for TLS support on
 298                            Windows if openssl and gnutls are not used [autodetect]
 299   --disable-sdl2           disable sdl2 [autodetect]
 300   --disable-securetransport disable Secure Transport, needed for TLS support
 301                            on OSX if openssl and gnutls are not used [autodetect]
 302   --disable-xlib           disable xlib [autodetect]
 303   --disable-zlib           disable zlib [autodetect]
 304
 305   The following libraries provide various hardware acceleration features:
 306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 312   --enable-libdrm          enable DRM code (Linux) [no]
 313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 316   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 317   --enable-omx             enable OpenMAX IL code [no]
 318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 319   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 320   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 321   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 322   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 323
 324 Toolchain options:
 325   --arch=ARCH              select architecture [$arch]
 326   --cpu=CPU                select the minimum required CPU (affects
 327                            instruction selection, may crash on older CPUs)
 328   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 329   --progs-suffix=SUFFIX    program name suffix []
 330   --enable-cross-compile   assume a cross-compiler is used
 331   --sysroot=PATH           root of cross-build tree
 332   --sysinclude=PATH        location of cross-build system headers
 333   --target-os=OS           compiler targets OS [$target_os]
 334   --target-exec=CMD        command to run executables on target
 335   --target-path=DIR        path to view of build directory on target
 336   --target-samples=DIR     path to samples directory on target
 337   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 338   --toolchain=NAME         set tool defaults according to NAME
 339   --nm=NM                  use nm tool NM [$nm_default]
 340   --ar=AR                  use archive tool AR [$ar_default]
 341   --as=AS                  use assembler AS [$as_default]
 342   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 343   --strip=STRIP            use strip tool STRIP [$strip_default]
 344   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 345   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 346   --cc=CC                  use C compiler CC [$cc_default]
 347   --cxx=CXX                use C compiler CXX [$cxx_default]
 348   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 349   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 350   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 351   --ld=LD                  use linker LD [$ld_default]
 352   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 353   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 354   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 355   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 356   --host-cc=HOSTCC         use host C compiler HOSTCC
 357   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 358   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 359   --host-ld=HOSTLD         use host linker HOSTLD
 360   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 361   --host-libs=HLIBS        use libs HLIBS when linking for host
 362   --host-os=OS             compiler host OS [$target_os]
 363   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 364   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 365   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 366   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 367   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 368   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 369   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 370   --extra-version=STRING   version string suffix []
 371   --optflags=OPTFLAGS      override optimization-related compiler flags
 372   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 373   --build-suffix=SUFFIX    library name suffix []
 374   --enable-pic             build position-independent code
 375   --enable-thumb           compile for Thumb instruction set
 376   --enable-lto             use link-time optimization
 377   --env="ENV=override"     override the environment variables
 378
 379 Advanced options (experts only):
 380   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 381   --custom-allocator=NAME  use a supported custom allocator
 382   --disable-symver         disable symbol versioning
 383   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 384   --disable-safe-bitstream-reader
 385                            disable buffer boundary checking in bitreaders
 386                            (faster, but may crash)
 387   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 388
 389 Optimization options (experts only):
 390   --disable-asm            disable all assembly optimizations
 391   --disable-altivec        disable AltiVec optimizations
 392   --disable-vsx            disable VSX optimizations
 393   --disable-power8         disable POWER8 optimizations
 394   --disable-amd3dnow       disable 3DNow! optimizations
 395   --disable-amd3dnowext    disable 3DNow! extended optimizations
 396   --disable-mmx            disable MMX optimizations
 397   --disable-mmxext         disable MMXEXT optimizations
 398   --disable-sse            disable SSE optimizations
 399   --disable-sse2           disable SSE2 optimizations
 400   --disable-sse3           disable SSE3 optimizations
 401   --disable-ssse3          disable SSSE3 optimizations
 402   --disable-sse4           disable SSE4 optimizations
 403   --disable-sse42          disable SSE4.2 optimizations
 404   --disable-avx            disable AVX optimizations
 405   --disable-xop            disable XOP optimizations
 406   --disable-fma3           disable FMA3 optimizations
 407   --disable-fma4           disable FMA4 optimizations
 408   --disable-avx2           disable AVX2 optimizations
 409   --disable-aesni          disable AESNI optimizations
 410   --disable-armv5te        disable armv5te optimizations
 411   --disable-armv6          disable armv6 optimizations
 412   --disable-armv6t2        disable armv6t2 optimizations
 413   --disable-vfp            disable VFP optimizations
 414   --disable-neon           disable NEON optimizations
 415   --disable-inline-asm     disable use of inline assembly
 416   --disable-x86asm         disable use of standalone x86 assembly
 417   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 418   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 419   --disable-msa            disable MSA optimizations
 420   --disable-mipsfpu        disable floating point MIPS optimizations
 421   --disable-mmi            disable Loongson SIMD optimizations
 422   --disable-fast-unaligned consider unaligned accesses slow
 423
 424 Developer options (useful when working on FFmpeg itself):
 425   --disable-debug          disable debugging symbols
 426   --enable-debug=LEVEL     set the debug level [$debuglevel]
 427   --disable-optimizations  disable compiler optimizations
 428   --enable-extra-warnings  enable more compiler warnings
 429   --disable-stripping      disable stripping of executables and shared libraries
 430   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 431                            2 causes a slowdown at runtime.
 432   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 433   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 434                            leaks and errors, using the specified valgrind binary.
 435                            Cannot be combined with --target-exec
 436   --enable-ftrapv          Trap arithmetic overflows
 437   --samples=PATH           location of test samples for FATE, if not set use
 438                            \$FATE_SAMPLES at make invocation time.
 439   --enable-neon-clobber-test check NEON registers for clobbering (should be
 440                            used only for debugging purposes)
 441   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 442                            should be used only for debugging purposes)
 443   --enable-random          randomly enable/disable components
 444   --disable-random
 445   --enable-random=LIST     randomly enable/disable specific components or
 446   --disable-random=LIST    component groups. LIST is a comma-separated list
 447                            of NAME[:PROB] entries where NAME is a component
 448                            (group) and PROB the probability associated with
 449                            NAME (default 0.5).
 450   --random-seed=VALUE      seed value for --enable/disable-random
 451   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 452                            (only applies to --disable-optimizations builds)
 453   --enable-osfuzz          Enable building fuzzer tool
 454   --libfuzzer=PATH         path to libfuzzer
 455   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 456                            in the name) of tests whose result is ignored
 457   --enable-linux-perf      enable Linux Performance Monitor API
 458
 459 NOTE: Object files are built at the place where configure is launched.
 460 EOF
 461   exit 0
 462 }
 463
 464 quotes='""'
 465 if test -t 1 && which tput >/dev/null 2>&1; then
 466     ncolors=$(tput colors)
 467     if test -n "$ncolors" && test $ncolors -ge 8; then
 468         bold_color=$(tput bold)
 469         warn_color=$(tput setaf 3)
 470         error_color=$(tput setaf 1)
 471         reset_color=$(tput sgr0)
 472     fi
 473     # 72 used instead of 80 since that's the default of pr
 474     ncols=$(tput cols)
 475 fi
 476 : ${ncols:=72}
 477
 478 log(){
 479     echo "$@" >> $logfile
 480 }
 481
 482 log_file(){
 483     log BEGIN $1
 484     pr -n -t $1 >> $logfile
 485     log END $1
 486 }
 487
 488 warn(){
 489     log "WARNING: $*"
 490     WARNINGS="${WARNINGS}WARNING: $*\n"
 491 }
 492
 493 die(){
 494     log "$@"
 495     echo "$error_color$bold_color$@$reset_color"
 496     cat <<EOF
 497
 498 If you think configure made a mistake, make sure you are using the latest
 499 version from Git.  If the latest version fails, report the problem to the
 500 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 501 EOF
 502     if disabled logging; then
 503         cat <<EOF
 504 Rerun configure with logging enabled (do not use --disable-logging), and
 505 include the log this produces with your report.
 506 EOF
 507     else
 508         cat <<EOF
 509 Include the log file "$logfile" produced by configure as this will help
 510 solve the problem.
 511 EOF
 512     fi
 513     exit 1
 514 }
 515
 516 # Avoid locale weirdness, besides we really just want to translate ASCII.
 517 toupper(){
 518     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 519 }
 520
 521 tolower(){
 522     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 523 }
 524
 525 c_escape(){
 526     echo "$*" | sed 's/["\\]/\\\0/g'
 527 }
 528
 529 sh_quote(){
 530     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 531     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 532     echo "$v"
 533 }
 534
 535 cleanws(){
 536     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 537 }
 538
 539 filter(){
 540     pat=$1
 541     shift
 542     for v; do
 543         eval "case $v in $pat) printf '%s ' $v ;; esac"
 544     done
 545 }
 546
 547 filter_out(){
 548     pat=$1
 549     shift
 550     for v; do
 551         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 552     done
 553 }
 554
 555 map(){
 556     m=$1
 557     shift
 558     for v; do eval $m; done
 559 }
 560
 561 add_suffix(){
 562     suffix=$1
 563     shift
 564     for v; do echo ${v}${suffix}; done
 565 }
 566
 567 set_all(){
 568     value=$1
 569     shift
 570     for var in $*; do
 571         eval $var=$value
 572     done
 573 }
 574
 575 set_weak(){
 576     value=$1
 577     shift
 578     for var; do
 579         eval : \${$var:=$value}
 580     done
 581 }
 582
 583 sanitize_var_name(){
 584     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 585 }
 586
 587 set_safe(){
 588     var=$1
 589     shift
 590     eval $(sanitize_var_name "$var")='$*'
 591 }
 592
 593 get_safe(){
 594     eval echo \$$(sanitize_var_name "$1")
 595 }
 596
 597 pushvar(){
 598     for pvar in $*; do
 599         eval level=\${${pvar}_level:=0}
 600         eval ${pvar}_${level}="\$$pvar"
 601         eval ${pvar}_level=$(($level+1))
 602     done
 603 }
 604
 605 popvar(){
 606     for pvar in $*; do
 607         eval level=\${${pvar}_level:-0}
 608         test $level = 0 && continue
 609         eval level=$(($level-1))
 610         eval $pvar="\${${pvar}_${level}}"
 611         eval ${pvar}_level=$level
 612         eval unset ${pvar}_${level}
 613     done
 614 }
 615
 616 request(){
 617     for var in $*; do
 618         eval ${var}_requested=yes
 619         eval $var=
 620     done
 621 }
 622
 623 enable(){
 624     set_all yes $*
 625 }
 626
 627 disable(){
 628     set_all no $*
 629 }
 630
 631 enable_weak(){
 632     set_weak yes $*
 633 }
 634
 635 disable_weak(){
 636     set_weak no $*
 637 }
 638
 639 enable_safe(){
 640     for var; do
 641         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 642     done
 643 }
 644
 645 disable_safe(){
 646     for var; do
 647         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 648     done
 649 }
 650
 651 do_enable_deep(){
 652     for var; do
 653         enabled $var && continue
 654         eval sel="\$${var}_select"
 655         eval sgs="\$${var}_suggest"
 656         pushvar var sgs
 657         enable_deep $sel
 658         popvar sgs
 659         enable_deep_weak $sgs
 660         popvar var
 661     done
 662 }
 663
 664 enable_deep(){
 665     do_enable_deep $*
 666     enable $*
 667 }
 668
 669 enable_deep_weak(){
 670     for var; do
 671         disabled $var && continue
 672         pushvar var
 673         do_enable_deep $var
 674         popvar var
 675         enable_weak $var
 676     done
 677 }
 678
 679 requested(){
 680     test "${1#!}" = "$1" && op='=' || op=!=
 681     eval test "x\$${1#!}_requested" $op "xyes"
 682 }
 683
 684 enabled(){
 685     test "${1#!}" = "$1" && op='=' || op=!=
 686     eval test "x\$${1#!}" $op "xyes"
 687 }
 688
 689 disabled(){
 690     test "${1#!}" = "$1" && op='=' || op=!=
 691     eval test "x\$${1#!}" $op "xno"
 692 }
 693
 694 enabled_all(){
 695     for opt; do
 696         enabled $opt || return 1
 697     done
 698 }
 699
 700 disabled_all(){
 701     for opt; do
 702         disabled $opt || return 1
 703     done
 704 }
 705
 706 enabled_any(){
 707     for opt; do
 708         enabled $opt && return 0
 709     done
 710 }
 711
 712 disabled_any(){
 713     for opt; do
 714         disabled $opt && return 0
 715     done
 716     return 1
 717 }
 718
 719 set_default(){
 720     for opt; do
 721         eval : \${$opt:=\$${opt}_default}
 722     done
 723 }
 724
 725 is_in(){
 726     value=$1
 727     shift
 728     for var in $*; do
 729         [ $var = $value ] && return 0
 730     done
 731     return 1
 732 }
 733
 734 check_deps(){
 735     for cfg; do
 736         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 737         disabled ${cfg}_checking && continue
 738         enable ${cfg}_checking
 739
 740         eval dep_all="\$${cfg}_deps"
 741         eval dep_any="\$${cfg}_deps_any"
 742         eval dep_con="\$${cfg}_conflict"
 743         eval dep_sel="\$${cfg}_select"
 744         eval dep_sgs="\$${cfg}_suggest"
 745         eval dep_ifa="\$${cfg}_if"
 746         eval dep_ifn="\$${cfg}_if_any"
 747
 748         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 749         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 750         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 751
 752         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 753         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 754         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 755         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 756         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 757         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 758
 759         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 760
 761         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 762             # filter out library deps, these do not belong in extralibs
 763             is_in $dep $LIBRARY_LIST && continue
 764             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 765         done
 766
 767         disable ${cfg}_checking
 768     done
 769 }
 770
 771 print_config(){
 772     pfx=$1
 773     files=$2
 774     shift 2
 775     map 'eval echo "$v \${$v:-no}"' "$@" |
 776     awk "BEGIN { split(\"$files\", files) }
 777         {
 778             c = \"$pfx\" toupper(\$1);
 779             v = \$2;
 780             sub(/yes/, 1, v);
 781             sub(/no/,  0, v);
 782             for (f in files) {
 783                 file = files[f];
 784                 if (file ~ /\\.h\$/) {
 785                     printf(\"#define %s %d\\n\", c, v) >>file;
 786                 } else if (file ~ /\\.asm\$/) {
 787                     printf(\"%%define %s %d\\n\", c, v) >>file;
 788                 } else if (file ~ /\\.mak\$/) {
 789                     n = -v ? \"\" : \"!\";
 790                     printf(\"%s%s=yes\\n\", n, c) >>file;
 791                 } else if (file ~ /\\.texi\$/) {
 792                     pre = -v ? \"\" : \"@c \";
 793                     yesno = \$2;
 794                     c2 = tolower(c);
 795                     gsub(/_/, \"-\", c2);
 796                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 797                 }
 798             }
 799         }"
 800 }
 801
 802 print_enabled(){
 803     suf=$1
 804     shift
 805     for v; do
 806         enabled $v && printf "%s\n" ${v%$suf}
 807     done
 808 }
 809
 810 append(){
 811     var=$1
 812     shift
 813     eval "$var=\"\$$var $*\""
 814 }
 815
 816 prepend(){
 817     var=$1
 818     shift
 819     eval "$var=\"$* \$$var\""
 820 }
 821
 822 unique(){
 823     var=$1
 824     uniq_list=""
 825     for tok in $(eval echo \$$var); do
 826         uniq_list="$(filter_out $tok $uniq_list) $tok"
 827     done
 828     eval "$var=\"${uniq_list}\""
 829 }
 830
 831 resolve(){
 832     var=$1
 833     tmpvar=
 834     for entry in $(eval echo \$$var); do
 835         tmpvar="$tmpvar $(eval echo \$${entry})"
 836     done
 837     eval "$var=\"${tmpvar}\""
 838 }
 839
 840 add_cppflags(){
 841     append CPPFLAGS "$@"
 842 }
 843
 844 add_cflags(){
 845     append CFLAGS $($cflags_filter "$@")
 846 }
 847
 848 add_cflags_headers(){
 849     append CFLAGS_HEADERS $($cflags_filter "$@")
 850 }
 851
 852 add_cxxflags(){
 853     append CXXFLAGS $($cflags_filter "$@")
 854 }
 855
 856 add_asflags(){
 857     append ASFLAGS $($asflags_filter "$@")
 858 }
 859
 860 add_objcflags(){
 861     append OBJCFLAGS $($objcflags_filter "$@")
 862 }
 863
 864 add_ldflags(){
 865     append LDFLAGS $($ldflags_filter "$@")
 866 }
 867
 868 add_ldexeflags(){
 869     append LDEXEFLAGS $($ldflags_filter "$@")
 870 }
 871
 872 add_ldlibflags(){
 873     append LDLIBFLAGS $($ldflags_filter "$@")
 874 }
 875
 876 add_stripflags(){
 877     append ASMSTRIPFLAGS "$@"
 878 }
 879
 880 add_extralibs(){
 881     prepend extralibs $($ldflags_filter "$@")
 882 }
 883
 884 add_host_cppflags(){
 885     append host_cppflags "$@"
 886 }
 887
 888 add_host_cflags(){
 889     append host_cflags $($host_cflags_filter "$@")
 890 }
 891
 892 add_host_ldflags(){
 893     append host_ldflags $($host_ldflags_filter "$@")
 894 }
 895
 896 add_compat(){
 897     append compat_objs $1
 898     shift
 899     map 'add_cppflags -D$v' "$@"
 900 }
 901
 902 check_cmd(){
 903     log "$@"
 904     "$@" >> $logfile 2>&1
 905 }
 906
 907 check_stat(){
 908     log check_stat "$@"
 909     stat "$1" >> $logfile 2>&1
 910 }
 911
 912 cc_o(){
 913     eval printf '%s\\n' $CC_O
 914 }
 915
 916 cc_e(){
 917     eval printf '%s\\n' $CC_E
 918 }
 919
 920 check_cc(){
 921     log check_cc "$@"
 922     cat > $TMPC
 923     log_file $TMPC
 924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 925 }
 926
 927 check_cxx(){
 928     log check_cxx "$@"
 929     cat > $TMPCPP
 930     log_file $TMPCPP
 931     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 932 }
 933
 934 check_objcc(){
 935     log check_objcc "$@"
 936     cat > $TMPM
 937     log_file $TMPM
 938     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 939 }
 940
 941 check_cpp(){
 942     log check_cpp "$@"
 943     cat > $TMPC
 944     log_file $TMPC
 945     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 946 }
 947
 948 as_o(){
 949     eval printf '%s\\n' $AS_O
 950 }
 951
 952 check_as(){
 953     log check_as "$@"
 954     cat > $TMPS
 955     log_file $TMPS
 956     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 957 }
 958
 959 check_inline_asm(){
 960     log check_inline_asm "$@"
 961     name="$1"
 962     code="$2"
 963     shift 2
 964     disable $name
 965     check_cc "$@" <<EOF && enable $name
 966 void foo(void){ __asm__ volatile($code); }
 967 EOF
 968 }
 969
 970 check_inline_asm_flags(){
 971     log check_inline_asm_flags "$@"
 972     name="$1"
 973     code="$2"
 974     flags=''
 975     shift 2
 976     while [ "$1" != "" ]; do
 977       append flags $1
 978       shift
 979     done;
 980     disable $name
 981     cat > $TMPC <<EOF
 982 void foo(void){ __asm__ volatile($code); }
 983 EOF
 984     log_file $TMPC
 985     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 986     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 987 }
 988
 989 check_insn(){
 990     log check_insn "$@"
 991     check_inline_asm ${1}_inline "\"$2\""
 992     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 993 }
 994
 995 check_x86asm(){
 996     log check_x86asm "$@"
 997     echo "$1" > $TMPS
 998     log_file $TMPS
 999     shift 1
1000     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 check_ld(){
1008     log check_ld "$@"
1009     type=$1
1010     shift 1
1011     flags=$(filter_out '-l*|*.so' $@)
1012     libs=$(filter '-l*|*.so' $@)
1013     check_$type $($cflags_filter $flags) || return
1014     flags=$($ldflags_filter $flags)
1015     libs=$($ldflags_filter $libs)
1016     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1017 }
1018
1019 print_include(){
1020     hdr=$1
1021     test "${hdr%.h}" = "${hdr}" &&
1022         echo "#include $hdr"    ||
1023         echo "#include <$hdr>"
1024 }
1025
1026 check_code(){
1027     log check_code "$@"
1028     check=$1
1029     headers=$2
1030     code=$3
1031     shift 3
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         echo "int main(void) { $code; return 0; }"
1037     } | check_$check "$@"
1038 }
1039
1040 check_cppflags(){
1041     log check_cppflags "$@"
1042     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1043 #include <stdlib.h>
1044 EOF
1045 }
1046
1047 test_cflags(){
1048     log test_cflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_cflags(){
1056     log check_cflags "$@"
1057     test_cflags "$@" && add_cflags "$@"
1058 }
1059
1060 check_cxxflags(){
1061     log check_cxxflags "$@"
1062     set -- $($cflags_filter "$@")
1063     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1064 int x;
1065 EOF
1066 }
1067
1068 test_objcflags(){
1069     log test_objcflags "$@"
1070     set -- $($objcflags_filter "$@")
1071     check_objcc "$@" <<EOF
1072 int x;
1073 EOF
1074 }
1075
1076 check_objcflags(){
1077     log check_objcflags "$@"
1078     test_objcflags "$@" && add_objcflags "$@"
1079 }
1080
1081 test_ldflags(){
1082     log test_ldflags "$@"
1083     check_ld "cc" "$@" <<EOF
1084 int main(void){ return 0; }
1085 EOF
1086 }
1087
1088 check_ldflags(){
1089     log check_ldflags "$@"
1090     test_ldflags "$@" && add_ldflags "$@"
1091 }
1092
1093 test_stripflags(){
1094     log test_stripflags "$@"
1095     # call check_cc to get a fresh TMPO
1096     check_cc <<EOF
1097 int main(void) { return 0; }
1098 EOF
1099     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1100 }
1101
1102 check_stripflags(){
1103     log check_stripflags "$@"
1104     test_stripflags "$@" && add_stripflags "$@"
1105 }
1106
1107 check_header(){
1108     log check_header "$@"
1109     header=$1
1110     shift
1111     disable_safe $header
1112     check_cpp "$@" <<EOF && enable_safe $header
1113 #include <$header>
1114 int x;
1115 EOF
1116 }
1117
1118 check_header_objcc(){
1119     log check_header_objcc "$@"
1120     rm -f -- "$TMPO"
1121     header=$1
1122     shift
1123     disable_safe $header
1124     {
1125        echo "#include <$header>"
1126        echo "int main(void) { return 0; }"
1127     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1128 }
1129
1130 check_apple_framework(){
1131     log check_apple_framework "$@"
1132     framework="$1"
1133     name="$(tolower $framework)"
1134     header="${framework}/${framework}.h"
1135     disable $name
1136     check_header_objcc $header &&
1137         enable $name && eval ${name}_extralibs='"-framework $framework"'
1138 }
1139
1140 check_func(){
1141     log check_func "$@"
1142     func=$1
1143     shift
1144     disable $func
1145     check_ld "cc" "$@" <<EOF && enable $func
1146 extern int $func();
1147 int main(void){ $func(); }
1148 EOF
1149 }
1150
1151 check_complexfunc(){
1152     log check_complexfunc "$@"
1153     func=$1
1154     narg=$2
1155     shift 2
1156     test $narg = 2 && args="f, g" || args="f * I"
1157     disable $func
1158     check_ld "cc" "$@" <<EOF && enable $func
1159 #include <complex.h>
1160 #include <math.h>
1161 float foo(complex float f, complex float g) { return $func($args); }
1162 int main(void){ return (int) foo; }
1163 EOF
1164 }
1165
1166 check_mathfunc(){
1167     log check_mathfunc "$@"
1168     func=$1
1169     narg=$2
1170     shift 2
1171     test $narg = 2 && args="f, g" || args="f"
1172     disable $func
1173     check_ld "cc" "$@" <<EOF && enable $func
1174 #include <math.h>
1175 float foo(float f, float g) { return $func($args); }
1176 int main(void){ return (int) foo; }
1177 EOF
1178 }
1179
1180 check_func_headers(){
1181     log check_func_headers "$@"
1182     headers=$1
1183     funcs=$2
1184     shift 2
1185     {
1186         for hdr in $headers; do
1187             print_include $hdr
1188         done
1189         echo "#include <stdint.h>"
1190         for func in $funcs; do
1191             echo "long check_$func(void) { return (long) $func; }"
1192         done
1193         echo "int main(void) { int ret = 0;"
1194         # LTO could optimize out the test functions without this
1195         for func in $funcs; do
1196             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1197         done
1198         echo "return ret; }"
1199     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1200 }
1201
1202 check_class_headers_cpp(){
1203     log check_class_headers_cpp "$@"
1204     headers=$1
1205     classes=$2
1206     shift 2
1207     {
1208         for hdr in $headers; do
1209             echo "#include <$hdr>"
1210         done
1211         echo "int main(void) { "
1212         i=1
1213         for class in $classes; do
1214             echo "$class obj$i;"
1215             i=$(expr $i + 1)
1216         done
1217         echo "return 0; }"
1218     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1219 }
1220
1221 check_cpp_condition(){
1222     log check_cpp_condition "$@"
1223     header=$1
1224     condition=$2
1225     shift 2
1226     check_cpp "$@" <<EOF
1227 #include <$header>
1228 #if !($condition)
1229 #error "unsatisfied condition: $condition"
1230 #endif
1231 EOF
1232 }
1233
1234 test_cflags_cc(){
1235     log test_cflags_cc "$@"
1236     flags=$1
1237     header=$2
1238     condition=$3
1239     shift 3
1240     set -- $($cflags_filter "$flags")
1241     check_cc "$@" <<EOF
1242 #include <$header>
1243 #if !($condition)
1244 #error "unsatisfied condition: $condition"
1245 #endif
1246 EOF
1247 }
1248
1249 check_lib(){
1250     log check_lib "$@"
1251     name="$1"
1252     headers="$2"
1253     funcs="$3"
1254     shift 3
1255     disable $name
1256     check_func_headers "$headers" "$funcs" "$@" &&
1257         enable $name && eval ${name}_extralibs="\$@"
1258 }
1259
1260 check_lib_cpp(){
1261     log check_lib_cpp "$@"
1262     name="$1"
1263     headers="$2"
1264     classes="$3"
1265     shift 3
1266     disable $name
1267     check_class_headers_cpp "$headers" "$classes" "$@" &&
1268         enable $name && eval ${name}_extralibs="\$@"
1269 }
1270
1271 check_pkg_config(){
1272     log check_pkg_config "$@"
1273     name="$1"
1274     pkg_version="$2"
1275     pkg="${2%% *}"
1276     headers="$3"
1277     funcs="$4"
1278     shift 4
1279     disable $name
1280     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1281     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1282     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1283     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1284         enable $name &&
1285         set_safe "${name}_cflags"    $pkg_cflags &&
1286         set_safe "${name}_extralibs" $pkg_libs
1287 }
1288
1289 check_exec(){
1290     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1291 }
1292
1293 check_exec_crash(){
1294     log check_exec_crash "$@"
1295     code=$(cat)
1296
1297     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1298     # are safe but may not be available everywhere.  Thus we use
1299     # raise(SIGTERM) instead.  The check is run in a subshell so we
1300     # can redirect the "Terminated" message from the shell.  SIGBUS
1301     # is not defined by standard C so it is used conditionally.
1302
1303     (check_exec "$@") >> $logfile 2>&1 <<EOF
1304 #include <signal.h>
1305 static void sighandler(int sig){
1306     raise(SIGTERM);
1307 }
1308 int foo(void){
1309     $code
1310 }
1311 int (*func_ptr)(void) = foo;
1312 int main(void){
1313     signal(SIGILL, sighandler);
1314     signal(SIGFPE, sighandler);
1315     signal(SIGSEGV, sighandler);
1316 #ifdef SIGBUS
1317     signal(SIGBUS, sighandler);
1318 #endif
1319     return func_ptr();
1320 }
1321 EOF
1322 }
1323
1324 check_type(){
1325     log check_type "$@"
1326     headers=$1
1327     type=$2
1328     shift 2
1329     disable_safe "$type"
1330     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1331 }
1332
1333 check_struct(){
1334     log check_struct "$@"
1335     headers=$1
1336     struct=$2
1337     member=$3
1338     shift 3
1339     disable_safe "${struct}_${member}"
1340     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1341         enable_safe "${struct}_${member}"
1342 }
1343
1344 check_builtin(){
1345     log check_builtin "$@"
1346     name=$1
1347     headers=$2
1348     builtin=$3
1349     shift 3
1350     disable "$name"
1351     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1352 }
1353
1354 check_compile_assert(){
1355     log check_compile_assert "$@"
1356     name=$1
1357     headers=$2
1358     condition=$3
1359     shift 3
1360     disable "$name"
1361     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1362 }
1363
1364 require(){
1365     log require "$@"
1366     name_version="$1"
1367     name="${1%% *}"
1368     headers="$2"
1369     func="$3"
1370     shift 3
1371     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1372 }
1373
1374 require_cpp(){
1375     name="$1"
1376     headers="$2"
1377     classes="$3"
1378     shift 3
1379     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1380 }
1381
1382 require_header(){
1383     log require "$@"
1384     header="$1"
1385     shift
1386     check_header "$header" "$@" || die "ERROR: $header header not found"
1387 }
1388
1389 require_cpp_condition(){
1390     log require "$@"
1391     header="$1"
1392     condition="$2"
1393     shift 2
1394     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1395 }
1396
1397 use_pkg_config(){
1398     log use_pkg_config "$@"
1399     name="$1"
1400     check_pkg_config "$@" || return 1
1401     add_cflags    $(get_safe "${name}_cflags")
1402 }
1403
1404 require_pkg_config(){
1405     log require_pkg_config "$@"
1406     pkg_version="$2"
1407     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1408 }
1409
1410 hostcc_e(){
1411     eval printf '%s\\n' $HOSTCC_E
1412 }
1413
1414 hostcc_o(){
1415     eval printf '%s\\n' $HOSTCC_O
1416 }
1417
1418 check_host_cc(){
1419     log check_host_cc "$@"
1420     cat > $TMPC
1421     log_file $TMPC
1422     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1423 }
1424
1425 check_host_cpp(){
1426     log check_host_cpp "$@"
1427     cat > $TMPC
1428     log_file $TMPC
1429     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1430 }
1431
1432 check_host_cppflags(){
1433     log check_host_cppflags "$@"
1434     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1435 #include <stdlib.h>
1436 EOF
1437 }
1438
1439 check_host_cflags(){
1440     log check_host_cflags "$@"
1441     set -- $($host_cflags_filter "$@")
1442     check_host_cc "$@" <<EOF && append host_cflags "$@"
1443 int x;
1444 EOF
1445 }
1446
1447 check_host_cpp_condition(){
1448     log check_host_cpp_condition "$@"
1449     header=$1
1450     condition=$2
1451     shift 2
1452     check_host_cpp "$@" <<EOF
1453 #include <$header>
1454 #if !($condition)
1455 #error "unsatisfied condition: $condition"
1456 #endif
1457 EOF
1458 }
1459
1460 cp_if_changed(){
1461     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1462     mkdir -p "$(dirname $2)"
1463     cp -f "$1" "$2"
1464 }
1465
1466 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1467 # system-dependent things.
1468
1469 AVCODEC_COMPONENTS="
1470     bsfs
1471     decoders
1472     encoders
1473     hwaccels
1474     parsers
1475 "
1476
1477 AVDEVICE_COMPONENTS="
1478     indevs
1479     outdevs
1480 "
1481
1482 AVFILTER_COMPONENTS="
1483     filters
1484 "
1485
1486 AVFORMAT_COMPONENTS="
1487     demuxers
1488     muxers
1489     protocols
1490 "
1491
1492 AVRESAMPLE_COMPONENTS=""
1493
1494 AVUTIL_COMPONENTS=""
1495
1496 COMPONENT_LIST="
1497     $AVCODEC_COMPONENTS
1498     $AVDEVICE_COMPONENTS
1499     $AVFILTER_COMPONENTS
1500     $AVFORMAT_COMPONENTS
1501     $AVRESAMPLE_COMPONENTS
1502     $AVUTIL_COMPONENTS
1503 "
1504
1505 EXAMPLE_LIST="
1506     avio_dir_cmd_example
1507     avio_reading_example
1508     decode_audio_example
1509     decode_video_example
1510     demuxing_decoding_example
1511     encode_audio_example
1512     encode_video_example
1513     extract_mvs_example
1514     filter_audio_example
1515     filtering_audio_example
1516     filtering_video_example
1517     http_multiclient_example
1518     hw_decode_example
1519     metadata_example
1520     muxing_example
1521     qsvdec_example
1522     remuxing_example
1523     resampling_audio_example
1524     scaling_video_example
1525     transcode_aac_example
1526     transcoding_example
1527 "
1528
1529 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1530     alsa
1531     appkit
1532     avfoundation
1533     bzlib
1534     coreimage
1535     iconv
1536     libxcb
1537     libxcb_shm
1538     libxcb_shape
1539     libxcb_xfixes
1540     lzma
1541     schannel
1542     sdl2
1543     securetransport
1544     sndio
1545     xlib
1546     zlib
1547 "
1548
1549 EXTERNAL_LIBRARY_GPL_LIST="
1550     avisynth
1551     frei0r
1552     libcdio
1553     librubberband
1554     libvidstab
1555     libx264
1556     libx265
1557     libxavs
1558     libxvid
1559 "
1560
1561 EXTERNAL_LIBRARY_NONFREE_LIST="
1562     decklink
1563     libndi_newtek
1564     libfdk_aac
1565     openssl
1566 "
1567
1568 EXTERNAL_LIBRARY_VERSION3_LIST="
1569     gmp
1570     libopencore_amrnb
1571     libopencore_amrwb
1572     libvo_amrwbenc
1573     rkmpp
1574 "
1575
1576 EXTERNAL_LIBRARY_GPLV3_LIST="
1577     libsmbclient
1578 "
1579
1580 EXTERNAL_LIBRARY_LIST="
1581     $EXTERNAL_LIBRARY_GPL_LIST
1582     $EXTERNAL_LIBRARY_NONFREE_LIST
1583     $EXTERNAL_LIBRARY_VERSION3_LIST
1584     $EXTERNAL_LIBRARY_GPLV3_LIST
1585     chromaprint
1586     gcrypt
1587     gnutls
1588     jni
1589     ladspa
1590     libass
1591     libbluray
1592     libbs2b
1593     libcaca
1594     libcelt
1595     libdc1394
1596     libdrm
1597     libflite
1598     libfontconfig
1599     libfreetype
1600     libfribidi
1601     libgme
1602     libgsm
1603     libiec61883
1604     libilbc
1605     libjack
1606     libkvazaar
1607     libmodplug
1608     libmp3lame
1609     libmysofa
1610     libopencv
1611     libopenh264
1612     libopenjpeg
1613     libopenmpt
1614     libopus
1615     libpulse
1616     librsvg
1617     librtmp
1618     libshine
1619     libsmbclient
1620     libsnappy
1621     libsoxr
1622     libspeex
1623     libssh
1624     libtesseract
1625     libtheora
1626     libtwolame
1627     libv4l2
1628     libvmaf
1629     libvorbis
1630     libvpx
1631     libwavpack
1632     libwebp
1633     libxml2
1634     libzimg
1635     libzmq
1636     libzvbi
1637     mediacodec
1638     openal
1639     opencl
1640     opengl
1641 "
1642
1643 HWACCEL_AUTODETECT_LIBRARY_LIST="
1644     audiotoolbox
1645     crystalhd
1646     cuda
1647     cuvid
1648     d3d11va
1649     dxva2
1650     nvenc
1651     vaapi
1652     vdpau
1653     videotoolbox
1654     v4l2_m2m
1655     xvmc
1656 "
1657
1658 # catchall list of things that require external libs to link
1659 EXTRALIBS_LIST="
1660     cpu_init
1661     cws2fws
1662 "
1663
1664 HWACCEL_LIBRARY_NONFREE_LIST="
1665     cuda_sdk
1666     libnpp
1667 "
1668
1669 HWACCEL_LIBRARY_LIST="
1670     $HWACCEL_LIBRARY_NONFREE_LIST
1671     libmfx
1672     mmal
1673     omx
1674 "
1675
1676 DOCUMENT_LIST="
1677     doc
1678     htmlpages
1679     manpages
1680     podpages
1681     txtpages
1682 "
1683
1684 FEATURE_LIST="
1685     ftrapv
1686     gray
1687     hardcoded_tables
1688     omx_rpi
1689     runtime_cpudetect
1690     safe_bitstream_reader
1691     shared
1692     small
1693     static
1694     swscale_alpha
1695 "
1696
1697 LIBRARY_LIST="
1698     avcodec
1699     avdevice
1700     avfilter
1701     avformat
1702     avresample
1703     avutil
1704     postproc
1705     swresample
1706     swscale
1707 "
1708
1709 LICENSE_LIST="
1710     gpl
1711     nonfree
1712     version3
1713 "
1714
1715 PROGRAM_LIST="
1716     ffplay
1717     ffprobe
1718     ffserver
1719     ffmpeg
1720 "
1721
1722 SUBSYSTEM_LIST="
1723     dct
1724     dwt
1725     error_resilience
1726     faan
1727     fast_unaligned
1728     fft
1729     lsp
1730     lzo
1731     mdct
1732     pixelutils
1733     network
1734     rdft
1735 "
1736
1737 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1738 CONFIG_LIST="
1739     $DOCUMENT_LIST
1740     $EXAMPLE_LIST
1741     $EXTERNAL_LIBRARY_LIST
1742     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1743     $HWACCEL_LIBRARY_LIST
1744     $HWACCEL_AUTODETECT_LIBRARY_LIST
1745     $FEATURE_LIST
1746     $LICENSE_LIST
1747     $LIBRARY_LIST
1748     $PROGRAM_LIST
1749     $SUBSYSTEM_LIST
1750     autodetect
1751     fontconfig
1752     linux_perf
1753     memory_poisoning
1754     neon_clobber_test
1755     ossfuzz
1756     pic
1757     thumb
1758     valgrind_backtrace
1759     xmm_clobber_test
1760     $COMPONENT_LIST
1761 "
1762
1763 THREADS_LIST="
1764     pthreads
1765     os2threads
1766     w32threads
1767 "
1768
1769 ATOMICS_LIST="
1770     atomics_gcc
1771     atomics_suncc
1772     atomics_win32
1773 "
1774
1775 AUTODETECT_LIBS="
1776     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1777     $HWACCEL_AUTODETECT_LIBRARY_LIST
1778     $THREADS_LIST
1779 "
1780
1781 ARCH_LIST="
1782     aarch64
1783     alpha
1784     arm
1785     avr32
1786     avr32_ap
1787     avr32_uc
1788     bfin
1789     ia64
1790     m68k
1791     mips
1792     mips64
1793     parisc
1794     ppc
1795     ppc64
1796     s390
1797     sh4
1798     sparc
1799     sparc64
1800     tilegx
1801     tilepro
1802     tomi
1803     x86
1804     x86_32
1805     x86_64
1806 "
1807
1808 ARCH_EXT_LIST_ARM="
1809     armv5te
1810     armv6
1811     armv6t2
1812     armv8
1813     neon
1814     vfp
1815     vfpv3
1816     setend
1817 "
1818
1819 ARCH_EXT_LIST_MIPS="
1820     mipsfpu
1821     mips32r2
1822     mips32r5
1823     mips64r2
1824     mips32r6
1825     mips64r6
1826     mipsdsp
1827     mipsdspr2
1828     msa
1829 "
1830
1831 ARCH_EXT_LIST_LOONGSON="
1832     loongson2
1833     loongson3
1834     mmi
1835 "
1836
1837 ARCH_EXT_LIST_X86_SIMD="
1838     aesni
1839     amd3dnow
1840     amd3dnowext
1841     avx
1842     avx2
1843     fma3
1844     fma4
1845     mmx
1846     mmxext
1847     sse
1848     sse2
1849     sse3
1850     sse4
1851     sse42
1852     ssse3
1853     xop
1854 "
1855
1856 ARCH_EXT_LIST_PPC="
1857     altivec
1858     dcbzl
1859     ldbrx
1860     power8
1861     ppc4xx
1862     vsx
1863 "
1864
1865 ARCH_EXT_LIST_X86="
1866     $ARCH_EXT_LIST_X86_SIMD
1867     cpunop
1868     i686
1869 "
1870
1871 ARCH_EXT_LIST="
1872     $ARCH_EXT_LIST_ARM
1873     $ARCH_EXT_LIST_PPC
1874     $ARCH_EXT_LIST_X86
1875     $ARCH_EXT_LIST_MIPS
1876     $ARCH_EXT_LIST_LOONGSON
1877 "
1878
1879 ARCH_FEATURES="
1880     aligned_stack
1881     fast_64bit
1882     fast_clz
1883     fast_cmov
1884     local_aligned_8
1885     local_aligned_16
1886     local_aligned_32
1887     simd_align_16
1888     simd_align_32
1889 "
1890
1891 BUILTIN_LIST="
1892     atomic_cas_ptr
1893     machine_rw_barrier
1894     MemoryBarrier
1895     mm_empty
1896     rdtsc
1897     sarestart
1898     sem_timedwait
1899     sync_val_compare_and_swap
1900 "
1901 HAVE_LIST_CMDLINE="
1902     inline_asm
1903     symver
1904     x86asm
1905 "
1906
1907 HAVE_LIST_PUB="
1908     bigendian
1909     fast_unaligned
1910 "
1911
1912 HEADERS_LIST="
1913     altivec_h
1914     arpa_inet_h
1915     asm_types_h
1916     cdio_paranoia_h
1917     cdio_paranoia_paranoia_h
1918     cuda_h
1919     d3d11_h
1920     dispatch_dispatch_h
1921     dev_bktr_ioctl_bt848_h
1922     dev_bktr_ioctl_meteor_h
1923     dev_ic_bt8xx_h
1924     dev_video_bktr_ioctl_bt848_h
1925     dev_video_meteor_ioctl_meteor_h
1926     direct_h
1927     dirent_h
1928     dlfcn_h
1929     dxgidebug_h
1930     dxva_h
1931     ES2_gl_h
1932     gsm_h
1933     io_h
1934     mach_mach_time_h
1935     machine_ioctl_bt848_h
1936     machine_ioctl_meteor_h
1937     malloc_h
1938     opencv2_core_core_c_h
1939     OpenGL_gl3_h
1940     poll_h
1941     soundcard_h
1942     stdatomic_h
1943     sys_mman_h
1944     sys_param_h
1945     sys_resource_h
1946     sys_select_h
1947     sys_soundcard_h
1948     sys_time_h
1949     sys_un_h
1950     sys_videoio_h
1951     termios_h
1952     udplite_h
1953     unistd_h
1954     valgrind_valgrind_h
1955     windows_h
1956     winsock2_h
1957 "
1958
1959 INTRINSICS_LIST="
1960     intrinsics_neon
1961 "
1962
1963 COMPLEX_FUNCS="
1964     cabs
1965     cexp
1966 "
1967
1968 MATH_FUNCS="
1969     atanf
1970     atan2f
1971     cbrt
1972     cbrtf
1973     copysign
1974     cosf
1975     erf
1976     exp2
1977     exp2f
1978     expf
1979     hypot
1980     isfinite
1981     isinf
1982     isnan
1983     ldexpf
1984     llrint
1985     llrintf
1986     log2
1987     log2f
1988     log10f
1989     lrint
1990     lrintf
1991     powf
1992     rint
1993     round
1994     roundf
1995     sinf
1996     trunc
1997     truncf
1998 "
1999
2000 SYSTEM_FUNCS="
2001     access
2002     aligned_malloc
2003     arc4random
2004     clock_gettime
2005     closesocket
2006     CommandLineToArgvW
2007     CoTaskMemFree
2008     CryptGenRandom
2009     fcntl
2010     flt_lim
2011     fork
2012     getaddrinfo
2013     gethrtime
2014     getopt
2015     GetProcessAffinityMask
2016     GetProcessMemoryInfo
2017     GetProcessTimes
2018     getrusage
2019     GetSystemTimeAsFileTime
2020     gettimeofday
2021     glob
2022     glXGetProcAddress
2023     gmtime_r
2024     inet_aton
2025     isatty
2026     jack_port_get_latency_range
2027     kbhit
2028     LoadLibrary
2029     localtime_r
2030     lstat
2031     lzo1x_999_compress
2032     mach_absolute_time
2033     MapViewOfFile
2034     memalign
2035     mkstemp
2036     mmap
2037     mprotect
2038     nanosleep
2039     PeekNamedPipe
2040     posix_memalign
2041     pthread_cancel
2042     sched_getaffinity
2043     SetConsoleTextAttribute
2044     SetConsoleCtrlHandler
2045     setmode
2046     setrlimit
2047     Sleep
2048     strerror_r
2049     sysconf
2050     sysctl
2051     usleep
2052     UTGetOSTypeFromString
2053     VirtualAlloc
2054     wglGetProcAddress
2055 "
2056
2057 TOOLCHAIN_FEATURES="
2058     as_dn_directive
2059     as_fpu_directive
2060     as_func
2061     as_object_arch
2062     asm_mod_q
2063     attribute_may_alias
2064     attribute_packed
2065     blocks_extension
2066     ebp_available
2067     ebx_available
2068     gnu_as
2069     gnu_windres
2070     ibm_asm
2071     inline_asm_direct_symbol_refs
2072     inline_asm_labels
2073     inline_asm_nonlocal_labels
2074     pragma_deprecated
2075     rsync_contimeout
2076     symver_asm_label
2077     symver_gnu_asm
2078     vfp_args
2079     xform_asm
2080     xmm_clobbers
2081 "
2082
2083 TYPES_LIST="
2084     CONDITION_VARIABLE_Ptr
2085     kCMVideoCodecType_HEVC
2086     socklen_t
2087     struct_addrinfo
2088     struct_group_source_req
2089     struct_ip_mreq_source
2090     struct_ipv6_mreq
2091     struct_msghdr_msg_flags
2092     struct_pollfd
2093     struct_rusage_ru_maxrss
2094     struct_sctp_event_subscribe
2095     struct_sockaddr_in6
2096     struct_sockaddr_sa_len
2097     struct_sockaddr_storage
2098     struct_stat_st_mtim_tv_nsec
2099     struct_v4l2_frmivalenum_discrete
2100 "
2101
2102 HAVE_LIST="
2103     $ARCH_EXT_LIST
2104     $(add_suffix _external $ARCH_EXT_LIST)
2105     $(add_suffix _inline   $ARCH_EXT_LIST)
2106     $ARCH_FEATURES
2107     $ATOMICS_LIST
2108     $BUILTIN_LIST
2109     $COMPLEX_FUNCS
2110     $HAVE_LIST_CMDLINE
2111     $HAVE_LIST_PUB
2112     $HEADERS_LIST
2113     $INTRINSICS_LIST
2114     $MATH_FUNCS
2115     $SYSTEM_FUNCS
2116     $THREADS_LIST
2117     $TOOLCHAIN_FEATURES
2118     $TYPES_LIST
2119     atomics_native
2120     dos_paths
2121     libc_msvcrt
2122     makeinfo
2123     makeinfo_html
2124     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2125     perl
2126     pod2man
2127     section_data_rel_ro
2128     texi2html
2129     threads
2130     uwp
2131     vaapi_drm
2132     vaapi_x11
2133     vdpau_x11
2134     winrt
2135 "
2136
2137 # options emitted with CONFIG_ prefix but not available on the command line
2138 CONFIG_EXTRA="
2139     aandcttables
2140     ac3dsp
2141     audio_frame_queue
2142     audiodsp
2143     blockdsp
2144     bswapdsp
2145     cabac
2146     cbs
2147     cbs_h264
2148     cbs_h265
2149     cbs_mpeg2
2150     dirac_parse
2151     dvprofile
2152     exif
2153     faandct
2154     faanidct
2155     fdctdsp
2156     flacdsp
2157     fmtconvert
2158     frame_thread_encoder
2159     g722dsp
2160     golomb
2161     gplv3
2162     h263dsp
2163     h264chroma
2164     h264dsp
2165     h264parse
2166     h264pred
2167     h264qpel
2168     hevcparse
2169     hpeldsp
2170     huffman
2171     huffyuvdsp
2172     huffyuvencdsp
2173     idctdsp
2174     iirfilter
2175     mdct15
2176     intrax8
2177     iso_media
2178     ividsp
2179     jpegtables
2180     lgplv3
2181     libx262
2182     llauddsp
2183     llviddsp
2184     llvidencdsp
2185     lpc
2186     lzf
2187     me_cmp
2188     mpeg_er
2189     mpegaudio
2190     mpegaudiodsp
2191     mpegaudioheader
2192     mpegvideo
2193     mpegvideoenc
2194     mss34dsp
2195     pixblockdsp
2196     qpeldsp
2197     qsv
2198     qsvdec
2199     qsvenc
2200     rangecoder
2201     riffdec
2202     riffenc
2203     rtpdec
2204     rtpenc_chain
2205     rv34dsp
2206     sinewin
2207     snappy
2208     srtp
2209     startcode
2210     texturedsp
2211     texturedspenc
2212     tpeldsp
2213     vaapi_1
2214     vaapi_encode
2215     vc1dsp
2216     videodsp
2217     vp3dsp
2218     vp56dsp
2219     vp8dsp
2220     wma_freqs
2221     wmv2dsp
2222 "
2223
2224 CMDLINE_SELECT="
2225     $ARCH_EXT_LIST
2226     $CONFIG_LIST
2227     $HAVE_LIST_CMDLINE
2228     $THREADS_LIST
2229     asm
2230     cross_compile
2231     debug
2232     extra_warnings
2233     logging
2234     lto
2235     optimizations
2236     rpath
2237     stripping
2238 "
2239
2240 PATHS_LIST="
2241     bindir
2242     datadir
2243     docdir
2244     incdir
2245     libdir
2246     mandir
2247     pkgconfigdir
2248     prefix
2249     shlibdir
2250     install_name_dir
2251 "
2252
2253 CMDLINE_SET="
2254     $PATHS_LIST
2255     ar
2256     arch
2257     as
2258     assert_level
2259     build_suffix
2260     cc
2261     objcc
2262     cpu
2263     cross_prefix
2264     custom_allocator
2265     cxx
2266     dep_cc
2267     doxygen
2268     env
2269     extra_version
2270     gas
2271     host_cc
2272     host_cflags
2273     host_extralibs
2274     host_ld
2275     host_ldflags
2276     host_os
2277     ignore_tests
2278     install
2279     ld
2280     ln_s
2281     logfile
2282     malloc_prefix
2283     nm
2284     optflags
2285     nvccflags
2286     pkg_config
2287     pkg_config_flags
2288     progs_suffix
2289     random_seed
2290     ranlib
2291     samples
2292     strip
2293     sws_max_filter_size
2294     sysinclude
2295     sysroot
2296     target_exec
2297     target_os
2298     target_path
2299     target_samples
2300     tempprefix
2301     toolchain
2302     valgrind
2303     x86asmexe
2304 "
2305
2306 CMDLINE_APPEND="
2307     extra_cflags
2308     extra_cxxflags
2309     extra_objcflags
2310     host_cppflags
2311 "
2312
2313 # code dependency declarations
2314
2315 # architecture extensions
2316
2317 armv5te_deps="arm"
2318 armv6_deps="arm"
2319 armv6t2_deps="arm"
2320 armv8_deps="aarch64"
2321 neon_deps_any="aarch64 arm"
2322 intrinsics_neon_deps="neon"
2323 vfp_deps_any="aarch64 arm"
2324 vfpv3_deps="vfp"
2325 setend_deps="arm"
2326
2327 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2328
2329 loongson2_deps="mips"
2330 loongson3_deps="mips"
2331 mipsfpu_deps="mips"
2332 mipsdsp_deps="mips"
2333 mipsdspr2_deps="mips"
2334 mips32r2_deps="mips"
2335 mips32r5_deps="mips"
2336 mips32r6_deps="mips"
2337 mips64r2_deps="mips"
2338 mips64r6_deps="mips"
2339 msa_deps="mipsfpu"
2340 mmi_deps="mips"
2341
2342 altivec_deps="ppc"
2343 dcbzl_deps="ppc"
2344 ldbrx_deps="ppc"
2345 ppc4xx_deps="ppc"
2346 vsx_deps="altivec"
2347 power8_deps="vsx"
2348
2349 cpunop_deps="i686"
2350 x86_64_select="i686"
2351 x86_64_suggest="fast_cmov"
2352
2353 amd3dnow_deps="mmx"
2354 amd3dnowext_deps="amd3dnow"
2355 i686_deps="x86"
2356 mmx_deps="x86"
2357 mmxext_deps="mmx"
2358 sse_deps="mmxext"
2359 sse2_deps="sse"
2360 sse3_deps="sse2"
2361 ssse3_deps="sse3"
2362 sse4_deps="ssse3"
2363 sse42_deps="sse4"
2364 aesni_deps="sse42"
2365 avx_deps="sse42"
2366 xop_deps="avx"
2367 fma3_deps="avx"
2368 fma4_deps="avx"
2369 avx2_deps="avx"
2370
2371 mmx_external_deps="x86asm"
2372 mmx_inline_deps="inline_asm"
2373 mmx_suggest="mmx_external mmx_inline"
2374
2375 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2376     eval dep=\$${ext}_deps
2377     eval ${ext}_external_deps='"${dep}_external"'
2378     eval ${ext}_inline_deps='"${dep}_inline"'
2379     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2380 done
2381
2382 aligned_stack_if_any="aarch64 ppc x86"
2383 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2384 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2385 fast_unaligned_if_any="aarch64 ppc x86"
2386 simd_align_16_if_any="altivec neon sse"
2387 simd_align_32_if_any="avx"
2388
2389 # system capabilities
2390 symver_if_any="symver_asm_label symver_gnu_asm"
2391 valgrind_backtrace_conflict="optimizations"
2392 valgrind_backtrace_deps="valgrind_valgrind_h"
2393
2394 # threading support
2395 atomics_gcc_if="sync_val_compare_and_swap"
2396 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2397 atomics_win32_if="MemoryBarrier"
2398 atomics_native_if_any="$ATOMICS_LIST"
2399 w32threads_deps="atomics_native"
2400 threads_if_any="$THREADS_LIST"
2401
2402 # subsystems
2403 cbs_h264_select="cbs golomb"
2404 cbs_h265_select="cbs golomb"
2405 cbs_mpeg2_select="cbs"
2406 dct_select="rdft"
2407 dirac_parse_select="golomb"
2408 error_resilience_select="me_cmp"
2409 faandct_deps="faan fdctdsp"
2410 faanidct_deps="faan idctdsp"
2411 h264dsp_select="startcode"
2412 hevcparse_select="golomb"
2413 frame_thread_encoder_deps="encoders threads"
2414 intrax8_select="blockdsp idctdsp"
2415 mdct_select="fft"
2416 mdct15_select="fft"
2417 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2418 mpeg_er_select="error_resilience"
2419 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2420 mpegaudiodsp_select="dct"
2421 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2422 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2423 vc1dsp_select="h264chroma qpeldsp startcode"
2424 rdft_select="fft"
2425
2426 # decoders / encoders
2427 aac_decoder_select="mdct15 mdct sinewin"
2428 aac_fixed_decoder_select="mdct sinewin"
2429 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2430 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2431 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2432 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2433 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2434 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2435 adpcm_g722_decoder_select="g722dsp"
2436 adpcm_g722_encoder_select="g722dsp"
2437 aic_decoder_select="golomb idctdsp"
2438 alac_encoder_select="lpc"
2439 als_decoder_select="bswapdsp"
2440 amrnb_decoder_select="lsp"
2441 amrwb_decoder_select="lsp"
2442 amv_decoder_select="sp5x_decoder exif"
2443 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2444 ape_decoder_select="bswapdsp llauddsp"
2445 apng_decoder_select="zlib"
2446 apng_encoder_select="llvidencdsp zlib"
2447 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2448 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2449 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2450 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2451 atrac1_decoder_select="mdct sinewin"
2452 atrac3_decoder_select="mdct"
2453 atrac3p_decoder_select="mdct sinewin"
2454 avrn_decoder_select="exif jpegtables"
2455 bink_decoder_select="blockdsp hpeldsp"
2456 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2457 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2458 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2459 clearvideo_decoder_select="idctdsp"
2460 cllc_decoder_select="bswapdsp"
2461 comfortnoise_encoder_select="lpc"
2462 cook_decoder_select="audiodsp mdct sinewin"
2463 cscd_decoder_select="lzo"
2464 cscd_decoder_suggest="zlib"
2465 dca_decoder_select="mdct"
2466 dds_decoder_select="texturedsp"
2467 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2468 dnxhd_decoder_select="blockdsp idctdsp"
2469 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2470 dolby_e_decoder_select="mdct"
2471 dvvideo_decoder_select="dvprofile idctdsp"
2472 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2473 dxa_decoder_select="zlib"
2474 dxv_decoder_select="lzf texturedsp"
2475 eac3_decoder_select="ac3_decoder"
2476 eac3_encoder_select="ac3_encoder"
2477 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2478 eatgq_decoder_select="aandcttables"
2479 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2480 exr_decoder_select="zlib"
2481 ffv1_decoder_select="rangecoder"
2482 ffv1_encoder_select="rangecoder"
2483 ffvhuff_decoder_select="huffyuv_decoder"
2484 ffvhuff_encoder_select="huffyuv_encoder"
2485 fic_decoder_select="golomb"
2486 flac_decoder_select="flacdsp"
2487 flac_encoder_select="bswapdsp flacdsp lpc"
2488 flashsv2_decoder_select="zlib"
2489 flashsv2_encoder_select="zlib"
2490 flashsv_decoder_select="zlib"
2491 flashsv_encoder_select="zlib"
2492 flv_decoder_select="h263_decoder"
2493 flv_encoder_select="h263_encoder"
2494 fourxm_decoder_select="blockdsp bswapdsp"
2495 fraps_decoder_select="bswapdsp huffman"
2496 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2497 g729_decoder_select="audiodsp"
2498 h261_decoder_select="mpegvideo"
2499 h261_encoder_select="aandcttables mpegvideoenc"
2500 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2501 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2502 h263i_decoder_select="h263_decoder"
2503 h263p_decoder_select="h263_decoder"
2504 h263p_encoder_select="h263_encoder"
2505 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2506 h264_decoder_suggest="error_resilience"
2507 hap_decoder_select="snappy texturedsp"
2508 hap_encoder_deps="libsnappy"
2509 hap_encoder_select="texturedspenc"
2510 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2511 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2512 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2513 iac_decoder_select="imc_decoder"
2514 imc_decoder_select="bswapdsp fft mdct sinewin"
2515 indeo3_decoder_select="hpeldsp"
2516 indeo4_decoder_select="ividsp"
2517 indeo5_decoder_select="ividsp"
2518 interplay_video_decoder_select="hpeldsp"
2519 jpegls_decoder_select="mjpeg_decoder"
2520 jv_decoder_select="blockdsp"
2521 lagarith_decoder_select="llviddsp"
2522 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2523 magicyuv_decoder_select="llviddsp"
2524 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2525 metasound_decoder_select="lsp mdct sinewin"
2526 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2527 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2528 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2529 mjpegb_decoder_select="mjpeg_decoder"
2530 mlp_decoder_select="mlp_parser"
2531 mlp_encoder_select="lpc"
2532 motionpixels_decoder_select="bswapdsp"
2533 mp1_decoder_select="mpegaudio"
2534 mp1float_decoder_select="mpegaudio"
2535 mp2_decoder_select="mpegaudio"
2536 mp2float_decoder_select="mpegaudio"
2537 mp3_decoder_select="mpegaudio"
2538 mp3adu_decoder_select="mpegaudio"
2539 mp3adufloat_decoder_select="mpegaudio"
2540 mp3float_decoder_select="mpegaudio"
2541 mp3on4_decoder_select="mpegaudio"
2542 mp3on4float_decoder_select="mpegaudio"
2543 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2544 mpc8_decoder_select="mpegaudiodsp"
2545 mpegvideo_decoder_select="mpegvideo"
2546 mpeg1video_decoder_select="mpegvideo"
2547 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2548 mpeg2video_decoder_select="mpegvideo"
2549 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2550 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2551 mpeg4_encoder_select="h263_encoder"
2552 msa1_decoder_select="mss34dsp"
2553 mscc_decoder_select="zlib"
2554 msmpeg4v1_decoder_select="h263_decoder"
2555 msmpeg4v2_decoder_select="h263_decoder"
2556 msmpeg4v2_encoder_select="h263_encoder"
2557 msmpeg4v3_decoder_select="h263_decoder"
2558 msmpeg4v3_encoder_select="h263_encoder"
2559 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2560 mts2_decoder_select="mss34dsp"
2561 mxpeg_decoder_select="mjpeg_decoder"
2562 nellymoser_decoder_select="mdct sinewin"
2563 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2564 nuv_decoder_select="idctdsp lzo"
2565 on2avc_decoder_select="mdct"
2566 opus_decoder_deps="swresample"
2567 opus_decoder_select="mdct15"
2568 opus_encoder_select="audio_frame_queue mdct15"
2569 png_decoder_select="zlib"
2570 png_encoder_select="llvidencdsp zlib"
2571 prores_decoder_select="blockdsp idctdsp"
2572 prores_encoder_select="fdctdsp"
2573 qcelp_decoder_select="lsp"
2574 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2575 ra_144_decoder_select="audiodsp"
2576 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2577 ralf_decoder_select="golomb"
2578 rawvideo_decoder_select="bswapdsp"
2579 rscc_decoder_select="zlib"
2580 rtjpeg_decoder_select="me_cmp"
2581 rv10_decoder_select="h263_decoder"
2582 rv10_encoder_select="h263_encoder"
2583 rv20_decoder_select="h263_decoder"
2584 rv20_encoder_select="h263_encoder"
2585 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2586 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2587 screenpresso_decoder_select="zlib"
2588 shorten_decoder_select="bswapdsp"
2589 sipr_decoder_select="lsp"
2590 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2591 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2592 sonic_decoder_select="golomb rangecoder"
2593 sonic_encoder_select="golomb rangecoder"
2594 sonic_ls_encoder_select="golomb rangecoder"
2595 sp5x_decoder_select="mjpeg_decoder"
2596 srgc_decoder_select="zlib"
2597 svq1_decoder_select="hpeldsp"
2598 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2599 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2600 svq3_decoder_suggest="zlib"
2601 tak_decoder_select="audiodsp"
2602 tdsc_decoder_select="zlib mjpeg_decoder"
2603 theora_decoder_select="vp3_decoder"
2604 thp_decoder_select="mjpeg_decoder"
2605 tiff_decoder_suggest="zlib lzma"
2606 tiff_encoder_suggest="zlib"
2607 truehd_decoder_select="mlp_parser"
2608 truehd_encoder_select="lpc"
2609 truemotion2_decoder_select="bswapdsp"
2610 truespeech_decoder_select="bswapdsp"
2611 tscc_decoder_select="zlib"
2612 twinvq_decoder_select="mdct lsp sinewin"
2613 txd_decoder_select="texturedsp"
2614 utvideo_decoder_select="bswapdsp llviddsp"
2615 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2616 vble_decoder_select="llviddsp"
2617 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2618 vc1_qsv_decoder_deps="libmfx"
2619 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2620 vc1image_decoder_select="vc1_decoder"
2621 vorbis_decoder_select="mdct"
2622 vorbis_encoder_select="mdct"
2623 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2624 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2625 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2626 vp6a_decoder_select="vp6_decoder"
2627 vp6f_decoder_select="vp6_decoder"
2628 vp7_decoder_select="h264pred videodsp vp8dsp"
2629 vp8_decoder_select="h264pred videodsp vp8dsp"
2630 vp9_decoder_select="videodsp vp9_parser"
2631 webp_decoder_select="vp8_decoder exif"
2632 wmalossless_decoder_select="llauddsp"
2633 wmapro_decoder_select="mdct sinewin wma_freqs"
2634 wmav1_decoder_select="mdct sinewin wma_freqs"
2635 wmav1_encoder_select="mdct sinewin wma_freqs"
2636 wmav2_decoder_select="mdct sinewin wma_freqs"
2637 wmav2_encoder_select="mdct sinewin wma_freqs"
2638 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2639 wmv1_decoder_select="h263_decoder"
2640 wmv1_encoder_select="h263_encoder"
2641 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2642 wmv2_encoder_select="h263_encoder wmv2dsp"
2643 wmv3_decoder_select="vc1_decoder"
2644 wmv3image_decoder_select="wmv3_decoder"
2645 xma1_decoder_select="wmapro_decoder"
2646 xma2_decoder_select="wmapro_decoder"
2647 zerocodec_decoder_select="zlib"
2648 zlib_decoder_select="zlib"
2649 zlib_encoder_select="zlib"
2650 zmbv_decoder_select="zlib"
2651 zmbv_encoder_select="zlib"
2652
2653 # hardware accelerators
2654 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2655 cuda_deps_any="libdl LoadLibrary"
2656 cuvid_deps="cuda"
2657 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2658 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2659 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2660 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2661 xvmc_deps="X11_extensions_XvMClib_h"
2662
2663 h263_vaapi_hwaccel_deps="vaapi"
2664 h263_vaapi_hwaccel_select="h263_decoder"
2665 h263_videotoolbox_hwaccel_deps="videotoolbox"
2666 h263_videotoolbox_hwaccel_select="h263_decoder"
2667 h264_cuvid_hwaccel_deps="cuda cuvid"
2668 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2669 h264_d3d11va_hwaccel_deps="d3d11va"
2670 h264_d3d11va_hwaccel_select="h264_decoder"
2671 h264_d3d11va2_hwaccel_deps="d3d11va"
2672 h264_d3d11va2_hwaccel_select="h264_decoder"
2673 h264_dxva2_hwaccel_deps="dxva2"
2674 h264_dxva2_hwaccel_select="h264_decoder"
2675 h264_mediacodec_hwaccel_deps="mediacodec"
2676 h264_mmal_hwaccel_deps="mmal"
2677 h264_qsv_hwaccel_deps="libmfx"
2678 h264_vaapi_hwaccel_deps="vaapi"
2679 h264_vaapi_hwaccel_select="h264_decoder"
2680 h264_vdpau_hwaccel_deps="vdpau"
2681 h264_vdpau_hwaccel_select="h264_decoder"
2682 h264_videotoolbox_hwaccel_deps="videotoolbox"
2683 h264_videotoolbox_hwaccel_select="h264_decoder"
2684 hevc_cuvid_hwaccel_deps="cuda cuvid"
2685 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2686 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2687 hevc_d3d11va_hwaccel_select="hevc_decoder"
2688 hevc_mediacodec_hwaccel_deps="mediacodec"
2689 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2690 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2691 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2692 hevc_dxva2_hwaccel_select="hevc_decoder"
2693 hevc_qsv_hwaccel_deps="libmfx"
2694 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2695 hevc_vaapi_hwaccel_select="hevc_decoder"
2696 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2697 hevc_vdpau_hwaccel_select="hevc_decoder"
2698 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2699 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2700 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2701 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2702 mpeg_xvmc_hwaccel_deps="xvmc"
2703 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2704 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2705 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2706 mpeg1_vdpau_hwaccel_deps="vdpau"
2707 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2708 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2709 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2710 mpeg1_xvmc_hwaccel_deps="xvmc"
2711 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2712 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2713 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2714 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2715 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2716 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2717 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2718 mpeg2_dxva2_hwaccel_deps="dxva2"
2719 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2720 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2721 mpeg2_mmal_hwaccel_deps="mmal"
2722 mpeg2_qsv_hwaccel_deps="libmfx"
2723 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2724 mpeg2_vaapi_hwaccel_deps="vaapi"
2725 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_vdpau_hwaccel_deps="vdpau"
2727 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2728 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2729 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2730 mpeg2_xvmc_hwaccel_deps="xvmc"
2731 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2732 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2733 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2734 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2735 mpeg4_mmal_hwaccel_deps="mmal"
2736 mpeg4_vaapi_hwaccel_deps="vaapi"
2737 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2738 mpeg4_vdpau_hwaccel_deps="vdpau"
2739 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2740 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2741 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2742 vc1_cuvid_hwaccel_deps="cuda cuvid"
2743 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2744 vc1_d3d11va_hwaccel_deps="d3d11va"
2745 vc1_d3d11va_hwaccel_select="vc1_decoder"
2746 vc1_d3d11va2_hwaccel_deps="d3d11va"
2747 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2748 vc1_dxva2_hwaccel_deps="dxva2"
2749 vc1_dxva2_hwaccel_select="vc1_decoder"
2750 vc1_mmal_hwaccel_deps="mmal"
2751 vc1_qsv_hwaccel_deps="libmfx"
2752 vc1_qsv_hwaccel_select="qsvdec_vc1"
2753 vc1_vaapi_hwaccel_deps="vaapi"
2754 vc1_vaapi_hwaccel_select="vc1_decoder"
2755 vc1_vdpau_hwaccel_deps="vdpau"
2756 vc1_vdpau_hwaccel_select="vc1_decoder"
2757 vp8_cuvid_hwaccel_deps="cuda cuvid"
2758 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2759 vp9_cuvid_hwaccel_deps="cuda cuvid"
2760 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2761 vp8_mediacodec_hwaccel_deps="mediacodec"
2762 vp8_qsv_hwaccel_deps="libmfx"
2763 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2764 vp9_d3d11va_hwaccel_select="vp9_decoder"
2765 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2766 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2767 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2768 vp9_dxva2_hwaccel_select="vp9_decoder"
2769 vp9_mediacodec_hwaccel_deps="mediacodec"
2770 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2771 vp9_vaapi_hwaccel_select="vp9_decoder"
2772 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2773 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2774 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2775 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2776 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2777
2778 # hardware-accelerated codecs
2779 omx_deps="libdl pthreads"
2780 omx_rpi_select="omx"
2781 qsvdec_select="qsv"
2782 qsvenc_select="qsv"
2783 vaapi_encode_deps="vaapi"
2784 v4l2_m2m_deps_any="linux_videodev2_h"
2785
2786 hwupload_cuda_filter_deps="cuda"
2787 scale_npp_filter_deps="cuda libnpp"
2788 scale_cuda_filter_deps="cuda_sdk"
2789 thumbnail_cuda_filter_deps="cuda_sdk"
2790
2791 nvenc_deps="cuda"
2792 nvenc_deps_any="libdl LoadLibrary"
2793 nvenc_encoder_deps="nvenc"
2794
2795 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2796 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2797 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2798 h264_cuvid_decoder_deps="cuda cuvid"
2799 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2800 h264_mediacodec_decoder_deps="mediacodec"
2801 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2802 h264_mmal_decoder_deps="mmal"
2803 h264_nvenc_encoder_deps="nvenc"
2804 h264_omx_encoder_deps="omx"
2805 h264_qsv_decoder_deps="libmfx"
2806 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2807 h264_qsv_encoder_deps="libmfx"
2808 h264_qsv_encoder_select="qsvenc"
2809 h264_rkmpp_decoder_deps="rkmpp"
2810 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2811 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2812 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2813 h264_vdpau_decoder_deps="vdpau"
2814 h264_vdpau_decoder_select="h264_decoder"
2815 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2816 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2817 hevc_cuvid_decoder_deps="cuda cuvid"
2818 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2819 hevc_mediacodec_decoder_deps="mediacodec"
2820 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2821 hevc_nvenc_encoder_deps="nvenc"
2822 hevc_qsv_decoder_deps="libmfx"
2823 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2824 hevc_qsv_encoder_deps="libmfx"
2825 hevc_qsv_encoder_select="hevcparse qsvenc"
2826 hevc_rkmpp_decoder_deps="rkmpp"
2827 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2828 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2829 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2830 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2831 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2832 mjpeg_cuvid_decoder_deps="cuda cuvid"
2833 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2834 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2835 mpeg1_cuvid_decoder_deps="cuda cuvid"
2836 mpeg1_vdpau_decoder_deps="vdpau"
2837 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2838 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2839 mpeg2_crystalhd_decoder_select="crystalhd"
2840 mpeg2_cuvid_decoder_deps="cuda cuvid"
2841 mpeg2_mmal_decoder_deps="mmal"
2842 mpeg2_mediacodec_decoder_deps="mediacodec"
2843 mpeg2_qsv_decoder_deps="libmfx"
2844 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2845 mpeg2_qsv_encoder_deps="libmfx"
2846 mpeg2_qsv_encoder_select="qsvenc"
2847 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2848 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2849 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2850 mpeg4_crystalhd_decoder_select="crystalhd"
2851 mpeg4_cuvid_decoder_deps="cuda cuvid"
2852 mpeg4_mediacodec_decoder_deps="mediacodec"
2853 mpeg4_mmal_decoder_deps="mmal"
2854 mpeg4_omx_encoder_deps="omx"
2855 mpeg4_vdpau_decoder_deps="vdpau"
2856 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2857 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2858 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2859 mpeg_vdpau_decoder_deps="vdpau"
2860 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2861 msmpeg4_crystalhd_decoder_select="crystalhd"
2862 nvenc_h264_encoder_select="h264_nvenc_encoder"
2863 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2864 vc1_crystalhd_decoder_select="crystalhd"
2865 vc1_cuvid_decoder_deps="cuda cuvid"
2866 vc1_mmal_decoder_deps="mmal"
2867 vc1_vdpau_decoder_deps="vdpau"
2868 vc1_vdpau_decoder_select="vc1_decoder"
2869 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2870 vp8_cuvid_decoder_deps="cuda cuvid"
2871 vp8_mediacodec_decoder_deps="mediacodec"
2872 vp8_qsv_decoder_deps="libmfx"
2873 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2874 vp8_rkmpp_decoder_deps="rkmpp"
2875 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2876 vp8_vaapi_encoder_select="vaapi_encode"
2877 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2878 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2879 vp9_cuvid_decoder_deps="cuda cuvid"
2880 vp9_mediacodec_decoder_deps="mediacodec"
2881 vp9_rkmpp_decoder_deps="rkmpp"
2882 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2883 vp9_vaapi_encoder_select="vaapi_encode"
2884 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2885 wmv3_crystalhd_decoder_select="crystalhd"
2886 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2887
2888 # parsers
2889 h264_parser_select="golomb h264dsp h264parse"
2890 hevc_parser_select="hevcparse"
2891 mpegaudio_parser_select="mpegaudioheader"
2892 mpegvideo_parser_select="mpegvideo"
2893 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2894 vc1_parser_select="vc1dsp"
2895
2896 # bitstream_filters
2897 h264_metadata_bsf_select="cbs_h264"
2898 h264_redundant_pps_bsf_select="cbs_h264"
2899 hevc_metadata_bsf_select="cbs_h265"
2900 mjpeg2jpeg_bsf_select="jpegtables"
2901 mpeg2_metadata_bsf_select="cbs_mpeg2"
2902 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2903
2904 # external libraries
2905 aac_at_decoder_deps="audiotoolbox"
2906 ac3_at_decoder_deps="audiotoolbox"
2907 ac3_at_decoder_select="ac3_parser"
2908 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2909 alac_at_decoder_deps="audiotoolbox"
2910 amr_nb_at_decoder_deps="audiotoolbox"
2911 avisynth_deps_any="libdl LoadLibrary"
2912 avisynth_demuxer_deps="avisynth"
2913 avisynth_demuxer_select="riffdec"
2914 eac3_at_decoder_deps="audiotoolbox"
2915 eac3_at_decoder_select="ac3_parser"
2916 gsm_ms_at_decoder_deps="audiotoolbox"
2917 ilbc_at_decoder_deps="audiotoolbox"
2918 mp1_at_decoder_deps="audiotoolbox"
2919 mp2_at_decoder_deps="audiotoolbox"
2920 mp3_at_decoder_deps="audiotoolbox"
2921 mp1_at_decoder_select="mpegaudioheader"
2922 mp2_at_decoder_select="mpegaudioheader"
2923 mp3_at_decoder_select="mpegaudioheader"
2924 pcm_alaw_at_decoder_deps="audiotoolbox"
2925 pcm_mulaw_at_decoder_deps="audiotoolbox"
2926 qdmc_at_decoder_deps="audiotoolbox"
2927 qdm2_at_decoder_deps="audiotoolbox"
2928 aac_at_encoder_deps="audiotoolbox"
2929 aac_at_encoder_select="audio_frame_queue"
2930 alac_at_encoder_deps="audiotoolbox"
2931 alac_at_encoder_select="audio_frame_queue"
2932 ilbc_at_encoder_deps="audiotoolbox"
2933 ilbc_at_encoder_select="audio_frame_queue"
2934 pcm_alaw_at_encoder_deps="audiotoolbox"
2935 pcm_alaw_at_encoder_select="audio_frame_queue"
2936 pcm_mulaw_at_encoder_deps="audiotoolbox"
2937 pcm_mulaw_at_encoder_select="audio_frame_queue"
2938 chromaprint_muxer_deps="chromaprint"
2939 h264_videotoolbox_encoder_deps="pthreads"
2940 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2941 libcelt_decoder_deps="libcelt"
2942 libfdk_aac_decoder_deps="libfdk_aac"
2943 libfdk_aac_encoder_deps="libfdk_aac"
2944 libfdk_aac_encoder_select="audio_frame_queue"
2945 libgme_demuxer_deps="libgme"
2946 libgsm_decoder_deps="libgsm"
2947 libgsm_encoder_deps="libgsm"
2948 libgsm_ms_decoder_deps="libgsm"
2949 libgsm_ms_encoder_deps="libgsm"
2950 libilbc_decoder_deps="libilbc"
2951 libilbc_encoder_deps="libilbc"
2952 libkvazaar_encoder_deps="libkvazaar"
2953 libmodplug_demuxer_deps="libmodplug"
2954 libmp3lame_encoder_deps="libmp3lame"
2955 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2956 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2957 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2958 libopencore_amrnb_encoder_select="audio_frame_queue"
2959 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2960 libopenh264_decoder_deps="libopenh264"
2961 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2962 libopenh264_encoder_deps="libopenh264"
2963 libopenjpeg_decoder_deps="libopenjpeg"
2964 libopenjpeg_encoder_deps="libopenjpeg"
2965 libopenmpt_demuxer_deps="libopenmpt"
2966 libopus_decoder_deps="libopus"
2967 libopus_encoder_deps="libopus"
2968 libopus_encoder_select="audio_frame_queue"
2969 librsvg_decoder_deps="librsvg"
2970 libshine_encoder_deps="libshine"
2971 libshine_encoder_select="audio_frame_queue"
2972 libspeex_decoder_deps="libspeex"
2973 libspeex_encoder_deps="libspeex"
2974 libspeex_encoder_select="audio_frame_queue"
2975 libtheora_encoder_deps="libtheora"
2976 libtwolame_encoder_deps="libtwolame"
2977 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2978 libvorbis_decoder_deps="libvorbis"
2979 libvorbis_encoder_deps="libvorbis libvorbisenc"
2980 libvorbis_encoder_select="audio_frame_queue"
2981 libvpx_vp8_decoder_deps="libvpx"
2982 libvpx_vp8_encoder_deps="libvpx"
2983 libvpx_vp9_decoder_deps="libvpx"
2984 libvpx_vp9_encoder_deps="libvpx"
2985 libwavpack_encoder_deps="libwavpack"
2986 libwavpack_encoder_select="audio_frame_queue"
2987 libwebp_encoder_deps="libwebp"
2988 libwebp_anim_encoder_deps="libwebp"
2989 libx262_encoder_deps="libx262"
2990 libx264_encoder_deps="libx264"
2991 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2992 libx264rgb_encoder_select="libx264_encoder"
2993 libx265_encoder_deps="libx265"
2994 libxavs_encoder_deps="libxavs"
2995 libxvid_encoder_deps="libxvid"
2996 libzvbi_teletext_decoder_deps="libzvbi"
2997 videotoolbox_suggest="coreservices"
2998 videotoolbox_deps="corefoundation coremedia corevideo"
2999 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3000
3001 # demuxers / muxers
3002 ac3_demuxer_select="ac3_parser"
3003 aiff_muxer_select="iso_media"
3004 asf_demuxer_select="riffdec"
3005 asf_o_demuxer_select="riffdec"
3006 asf_muxer_select="riffenc"
3007 asf_stream_muxer_select="asf_muxer"
3008 avi_demuxer_select="iso_media riffdec exif"
3009 avi_muxer_select="riffenc"
3010 caf_demuxer_select="iso_media riffdec"
3011 caf_muxer_select="iso_media"
3012 dash_muxer_select="mp4_muxer"
3013 dash_demuxer_deps="libxml2"
3014 dirac_demuxer_select="dirac_parser"
3015 dts_demuxer_select="dca_parser"
3016 dtshd_demuxer_select="dca_parser"
3017 dv_demuxer_select="dvprofile"
3018 dv_muxer_select="dvprofile"
3019 dxa_demuxer_select="riffdec"
3020 eac3_demuxer_select="ac3_parser"
3021 f4v_muxer_select="mov_muxer"
3022 fifo_muxer_deps="threads"
3023 flac_demuxer_select="flac_parser"
3024 hds_muxer_select="flv_muxer"
3025 hls_muxer_select="mpegts_muxer"
3026 hls_muxer_suggest="gcrypt openssl"
3027 image2_alias_pix_demuxer_select="image2_demuxer"
3028 image2_brender_pix_demuxer_select="image2_demuxer"
3029 ipod_muxer_select="mov_muxer"
3030 ismv_muxer_select="mov_muxer"
3031 matroska_audio_muxer_select="matroska_muxer"
3032 matroska_demuxer_select="iso_media riffdec"
3033 matroska_demuxer_suggest="bzlib lzo zlib"
3034 matroska_muxer_select="iso_media riffenc"
3035 mmf_muxer_select="riffenc"
3036 mov_demuxer_select="iso_media riffdec"
3037 mov_demuxer_suggest="zlib"
3038 mov_muxer_select="iso_media riffenc rtpenc_chain"
3039 mp3_demuxer_select="mpegaudio_parser"
3040 mp3_muxer_select="mpegaudioheader"
3041 mp4_muxer_select="mov_muxer"
3042 mpegts_demuxer_select="iso_media"
3043 mpegts_muxer_select="adts_muxer latm_muxer"
3044 mpegtsraw_demuxer_select="mpegts_demuxer"
3045 mxf_d10_muxer_select="mxf_muxer"
3046 mxf_opatom_muxer_select="mxf_muxer"
3047 nut_muxer_select="riffenc"
3048 nuv_demuxer_select="riffdec"
3049 oga_muxer_select="ogg_muxer"
3050 ogg_demuxer_select="dirac_parse"
3051 ogv_muxer_select="ogg_muxer"
3052 opus_muxer_select="ogg_muxer"
3053 psp_muxer_select="mov_muxer"
3054 rtp_demuxer_select="sdp_demuxer"
3055 rtp_muxer_select="golomb"
3056 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3057 rtsp_demuxer_select="http_protocol rtpdec"
3058 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3059 sap_demuxer_select="sdp_demuxer"
3060 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3061 sdp_demuxer_select="rtpdec"
3062 smoothstreaming_muxer_select="ismv_muxer"
3063 spdif_muxer_select="aac_parser"
3064 spx_muxer_select="ogg_muxer"
3065 swf_demuxer_suggest="zlib"
3066 tak_demuxer_select="tak_parser"
3067 tg2_muxer_select="mov_muxer"
3068 tgp_muxer_select="mov_muxer"
3069 vobsub_demuxer_select="mpegps_demuxer"
3070 w64_demuxer_select="wav_demuxer"
3071 w64_muxer_select="wav_muxer"
3072 wav_demuxer_select="riffdec"
3073 wav_muxer_select="riffenc"
3074 webm_muxer_select="iso_media riffenc"
3075 webm_dash_manifest_demuxer_select="matroska_demuxer"
3076 wtv_demuxer_select="mpegts_demuxer riffdec"
3077 wtv_muxer_select="mpegts_muxer riffenc"
3078 xmv_demuxer_select="riffdec"
3079 xwma_demuxer_select="riffdec"
3080
3081 # indevs / outdevs
3082 alsa_indev_deps="alsa"
3083 alsa_outdev_deps="alsa"
3084 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3085 avfoundation_indev_suggest="coregraphics applicationservices"
3086 avfoundation_indev_extralibs="-framework Foundation"
3087 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3088 caca_outdev_deps="libcaca"
3089 decklink_deps_any="libdl LoadLibrary"
3090 decklink_indev_deps="decklink threads"
3091 decklink_indev_extralibs="-lstdc++"
3092 decklink_outdev_deps="decklink threads"
3093 decklink_outdev_extralibs="-lstdc++"
3094 libndi_newtek_indev_deps="libndi_newtek"
3095 libndi_newtek_indev_extralibs="-lndi"
3096 libndi_newtek_outdev_deps="libndi_newtek"
3097 libndi_newtek_outdev_extralibs="-lndi"
3098 dshow_indev_deps="IBaseFilter"
3099 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3100 fbdev_indev_deps="linux_fb_h"
3101 fbdev_outdev_deps="linux_fb_h"
3102 gdigrab_indev_deps="CreateDIBSection"
3103 gdigrab_indev_extralibs="-lgdi32"
3104 gdigrab_indev_select="bmp_decoder"
3105 iec61883_indev_deps="libiec61883"
3106 jack_indev_deps="libjack"
3107 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3108 kmsgrab_indev_deps="libdrm"
3109 lavfi_indev_deps="avfilter"
3110 libcdio_indev_deps="libcdio"
3111 libdc1394_indev_deps="libdc1394"
3112 openal_indev_deps="openal"
3113 opengl_outdev_deps="opengl"
3114 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3115 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3116 pulse_indev_deps="libpulse"
3117 pulse_outdev_deps="libpulse"
3118 sdl2_outdev_deps="sdl2"
3119 sndio_indev_deps="sndio"
3120 sndio_outdev_deps="sndio"
3121 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3122 v4l2_indev_suggest="libv4l2"
3123 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3124 v4l2_outdev_suggest="libv4l2"
3125 vfwcap_indev_deps="vfw32 vfwcap_defines"
3126 xcbgrab_indev_deps="libxcb"
3127 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3128 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3129 xv_outdev_extralibs="-lXv -lX11 -lXext"
3130
3131 # protocols
3132 async_protocol_deps="threads"
3133 bluray_protocol_deps="libbluray"
3134 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3135 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3136 ffrtmpcrypt_protocol_select="tcp_protocol"
3137 ffrtmphttp_protocol_conflict="librtmp_protocol"
3138 ffrtmphttp_protocol_select="http_protocol"
3139 ftp_protocol_select="tcp_protocol"
3140 gopher_protocol_select="network"
3141 http_protocol_select="tcp_protocol"
3142 http_protocol_suggest="zlib"
3143 httpproxy_protocol_select="tcp_protocol"
3144 httpproxy_protocol_suggest="zlib"
3145 https_protocol_select="tls_protocol"
3146 https_protocol_suggest="zlib"
3147 icecast_protocol_select="http_protocol"
3148 librtmp_protocol_deps="librtmp"
3149 librtmpe_protocol_deps="librtmp"
3150 librtmps_protocol_deps="librtmp"
3151 librtmpt_protocol_deps="librtmp"
3152 librtmpte_protocol_deps="librtmp"
3153 libsmbclient_protocol_deps="libsmbclient gplv3"
3154 libssh_protocol_deps="libssh"
3155 mmsh_protocol_select="http_protocol"
3156 mmst_protocol_select="network"
3157 rtmp_protocol_conflict="librtmp_protocol"
3158 rtmp_protocol_select="tcp_protocol"
3159 rtmp_protocol_suggest="zlib"
3160 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3161 rtmpe_protocol_suggest="zlib"
3162 rtmps_protocol_conflict="librtmp_protocol"
3163 rtmps_protocol_select="tls_protocol"
3164 rtmps_protocol_suggest="zlib"
3165 rtmpt_protocol_select="ffrtmphttp_protocol"
3166 rtmpt_protocol_suggest="zlib"
3167 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3168 rtmpte_protocol_suggest="zlib"
3169 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3170 rtmpts_protocol_suggest="zlib"
3171 rtp_protocol_select="udp_protocol"
3172 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3173 sctp_protocol_select="network"
3174 srtp_protocol_select="rtp_protocol srtp"
3175 tcp_protocol_select="network"
3176 tls_gnutls_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol"
3177 tls_gnutls_protocol_deps="gnutls"
3178 tls_gnutls_protocol_select="tcp_protocol"
3179 tls_openssl_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol"
3180 tls_openssl_protocol_deps="openssl"
3181 tls_openssl_protocol_select="tcp_protocol"
3182 tls_schannel_protocol_deps="schannel"
3183 tls_schannel_protocol_select="tcp_protocol"
3184 tls_securetransport_protocol_deps="securetransport"
3185 tls_securetransport_protocol_select="tcp_protocol"
3186 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3187 udp_protocol_select="network"
3188 udplite_protocol_select="network"
3189 unix_protocol_deps="sys_un_h"
3190 unix_protocol_select="network"
3191
3192 # filters
3193 afftfilt_filter_deps="avcodec"
3194 afftfilt_filter_select="fft"
3195 afir_filter_deps="avcodec"
3196 afir_filter_select="fft"
3197 amovie_filter_deps="avcodec avformat"
3198 aresample_filter_deps="swresample"
3199 ass_filter_deps="libass"
3200 atempo_filter_deps="avcodec"
3201 atempo_filter_select="rdft"
3202 azmq_filter_deps="libzmq"
3203 blackframe_filter_deps="gpl"
3204 boxblur_filter_deps="gpl"
3205 bs2b_filter_deps="libbs2b"
3206 colormatrix_filter_deps="gpl"
3207 coreimage_filter_deps="coreimage appkit"
3208 coreimage_filter_extralibs="-framework OpenGL"
3209 coreimagesrc_filter_deps="coreimage appkit"
3210 coreimagesrc_filter_extralibs="-framework OpenGL"
3211 cover_rect_filter_deps="avcodec avformat gpl"
3212 cropdetect_filter_deps="gpl"
3213 deinterlace_qsv_filter_deps="libmfx"
3214 deinterlace_vaapi_filter_deps="vaapi"
3215 delogo_filter_deps="gpl"
3216 deshake_filter_select="pixelutils"
3217 deshake_filter_suggest="opencl"
3218 drawtext_filter_deps="libfreetype"
3219 drawtext_filter_suggest="libfontconfig libfribidi"
3220 elbg_filter_deps="avcodec"
3221 eq_filter_deps="gpl"
3222 fftfilt_filter_deps="avcodec"
3223 fftfilt_filter_select="rdft"
3224 find_rect_filter_deps="avcodec avformat gpl"
3225 firequalizer_filter_deps="avcodec"
3226 firequalizer_filter_select="rdft"
3227 flite_filter_deps="libflite"
3228 framerate_filter_select="pixelutils"
3229 frei0r_filter_deps="frei0r libdl"
3230 frei0r_src_filter_deps="frei0r libdl"
3231 fspp_filter_deps="gpl"
3232 geq_filter_deps="gpl"
3233 histeq_filter_deps="gpl"
3234 hqdn3d_filter_deps="gpl"
3235 interlace_filter_deps="gpl"
3236 kerndeint_filter_deps="gpl"
3237 ladspa_filter_deps="ladspa libdl"
3238 mcdeint_filter_deps="avcodec gpl"
3239 movie_filter_deps="avcodec avformat"
3240 mpdecimate_filter_deps="gpl"
3241 mpdecimate_filter_select="pixelutils"
3242 mptestsrc_filter_deps="gpl"
3243 negate_filter_deps="lut_filter"
3244 nnedi_filter_deps="gpl"
3245 ocr_filter_deps="libtesseract"
3246 ocv_filter_deps="libopencv"
3247 owdenoise_filter_deps="gpl"
3248 pan_filter_deps="swresample"
3249 perspective_filter_deps="gpl"
3250 phase_filter_deps="gpl"
3251 pp7_filter_deps="gpl"
3252 pp_filter_deps="gpl postproc"
3253 pullup_filter_deps="gpl"
3254 removelogo_filter_deps="avcodec avformat swscale"
3255 repeatfields_filter_deps="gpl"
3256 resample_filter_deps="avresample"
3257 rubberband_filter_deps="librubberband"
3258 sab_filter_deps="gpl swscale"
3259 scale2ref_filter_deps="swscale"
3260 scale_filter_deps="swscale"
3261 scale_qsv_filter_deps="libmfx"
3262 select_filter_select="pixelutils"
3263 showcqt_filter_deps="avcodec avformat swscale"
3264 showcqt_filter_suggest="libfontconfig libfreetype"
3265 showcqt_filter_select="fft"
3266 showfreqs_filter_deps="avcodec"
3267 showfreqs_filter_select="fft"
3268 showspectrum_filter_deps="avcodec"
3269 showspectrum_filter_select="fft"
3270 showspectrumpic_filter_deps="avcodec"
3271 showspectrumpic_filter_select="fft"
3272 signature_filter_deps="gpl avcodec avformat"
3273 smartblur_filter_deps="gpl swscale"
3274 sofalizer_filter_deps="libmysofa avcodec"
3275 sofalizer_filter_select="fft"
3276 spectrumsynth_filter_deps="avcodec"
3277 spectrumsynth_filter_select="fft"
3278 spp_filter_deps="gpl avcodec"
3279 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3280 stereo3d_filter_deps="gpl"
3281 subtitles_filter_deps="avformat avcodec libass"
3282 super2xsai_filter_deps="gpl"
3283 pixfmts_super2xsai_test_deps="super2xsai_filter"
3284 tinterlace_filter_deps="gpl"
3285 tinterlace_merge_test_deps="tinterlace_filter"
3286 tinterlace_pad_test_deps="tinterlace_filter"
3287 tonemap_filter_deps="const_nan"
3288 uspp_filter_deps="gpl avcodec"
3289 unsharp_filter_suggest="opencl"
3290 vaguedenoiser_filter_deps="gpl"
3291 vidstabdetect_filter_deps="libvidstab"
3292 vidstabtransform_filter_deps="libvidstab"
3293 libvmaf_filter_deps="libvmaf"
3294 zmq_filter_deps="libzmq"
3295 zoompan_filter_deps="swscale"
3296 zscale_filter_deps="libzimg const_nan"
3297 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3298
3299 # examples
3300 avio_dir_cmd_deps="avformat avutil"
3301 avio_reading_deps="avformat avcodec avutil"
3302 decode_audio_example_deps="avcodec avutil"
3303 decode_video_example_deps="avcodec avutil"
3304 demuxing_decoding_example_deps="avcodec avformat avutil"
3305 encode_audio_example_deps="avcodec avutil"
3306 encode_video_example_deps="avcodec avutil"
3307 extract_mvs_example_deps="avcodec avformat avutil"
3308 filter_audio_example_deps="avfilter avutil"
3309 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3310 filtering_video_example_deps="avfilter avcodec avformat avutil"
3311 http_multiclient_example_deps="avformat avutil fork"
3312 hw_decode_example_deps="avcodec avformat avutil"
3313 metadata_example_deps="avformat avutil"
3314 muxing_example_deps="avcodec avformat avutil swscale"
3315 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3316 remuxing_example_deps="avcodec avformat avutil"
3317 resampling_audio_example_deps="avutil swresample"
3318 scaling_video_example_deps="avutil swscale"
3319 transcode_aac_example_deps="avcodec avformat swresample"
3320 transcoding_example_deps="avfilter avcodec avformat avutil"
3321
3322 # EXTRALIBS_LIST
3323 cpu_init_extralibs="pthreads_extralibs"
3324 cws2fws_extralibs="zlib_extralibs"
3325
3326 # libraries, in linking order
3327 avcodec_deps="avutil"
3328 avcodec_suggest="libm"
3329 avcodec_select="null_bsf"
3330 avdevice_deps="avformat avcodec avutil"
3331 avdevice_suggest="libm"
3332 avfilter_deps="avutil"
3333 avfilter_suggest="libm"
3334 avformat_deps="avcodec avutil"
3335 avformat_suggest="libm network"
3336 avresample_deps="avutil"
3337 avresample_suggest="libm"
3338 avutil_suggest="clock_gettime libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3339 postproc_deps="avutil gpl"
3340 postproc_suggest="libm"
3341 swresample_deps="avutil"
3342 swresample_suggest="libm libsoxr"
3343 swscale_deps="avutil"
3344 swscale_suggest="libm"
3345
3346 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3347 avfilter_extralibs="pthreads_extralibs"
3348 avutil_extralibs="nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3349
3350 # programs
3351 ffmpeg_deps="avcodec avfilter avformat swresample"
3352 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3353                null_filter
3354                trim_filter"
3355 ffmpeg_suggest="ole32 psapi shell32"
3356 ffplay_deps="avcodec avformat swscale swresample sdl2"
3357 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3358 ffplay_suggest="shell32"
3359 ffprobe_deps="avcodec avformat"
3360 ffprobe_suggest="shell32"
3361 ffserver_deps="avformat fork sarestart"
3362 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3363
3364 # documentation
3365 podpages_deps="perl"
3366 manpages_deps="perl pod2man"
3367 htmlpages_deps="perl"
3368 htmlpages_deps_any="makeinfo_html texi2html"
3369 txtpages_deps="perl makeinfo"
3370 doc_deps_any="manpages htmlpages podpages txtpages"
3371
3372 # default parameters
3373
3374 logfile="ffbuild/config.log"
3375
3376 # installation paths
3377 prefix_default="/usr/local"
3378 bindir_default='${prefix}/bin'
3379 datadir_default='${prefix}/share/ffmpeg'
3380 docdir_default='${prefix}/share/doc/ffmpeg'
3381 incdir_default='${prefix}/include'
3382 libdir_default='${prefix}/lib'
3383 mandir_default='${prefix}/share/man'
3384
3385 # toolchain
3386 ar_default="ar"
3387 cc_default="gcc"
3388 cxx_default="g++"
3389 host_cc_default="gcc"
3390 doxygen_default="doxygen"
3391 install="install"
3392 ln_s_default="ln -s -f"
3393 nm_default="nm -g"
3394 pkg_config_default=pkg-config
3395 ranlib_default="ranlib"
3396 strip_default="strip"
3397 version_script='--version-script'
3398 x86asmexe_default="nasm"
3399 windres_default="windres"
3400 nvcc_default="nvcc"
3401 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3402 striptype="direct"
3403
3404 # OS
3405 target_os_default=$(tolower $(uname -s))
3406 host_os=$target_os_default
3407
3408 # machine
3409 if test "$target_os_default" = aix; then
3410     arch_default=$(uname -p)
3411     strip_default="strip -X32_64"
3412 else
3413     arch_default=$(uname -m)
3414 fi
3415 cpu="generic"
3416 intrinsics="none"
3417
3418 # configurable options
3419 enable $PROGRAM_LIST
3420 enable $DOCUMENT_LIST
3421 enable $EXAMPLE_LIST
3422 enable $(filter_out avresample $LIBRARY_LIST)
3423 enable stripping
3424
3425 enable asm
3426 enable debug
3427 enable doc
3428 enable faan faandct faanidct
3429 enable optimizations
3430 enable runtime_cpudetect
3431 enable safe_bitstream_reader
3432 enable static
3433 enable swscale_alpha
3434 enable valgrind_backtrace
3435
3436 sws_max_filter_size_default=256
3437 set_default sws_max_filter_size
3438
3439 # internal components are enabled by default
3440 enable $EXTRALIBS_LIST
3441
3442 # Avoid external, non-system, libraries getting enabled by dependency resolution
3443 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3444
3445 # build settings
3446 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3447 LIBPREF="lib"
3448 LIBSUF=".a"
3449 FULLNAME='$(NAME)$(BUILDSUF)'
3450 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3451 SLIBPREF="lib"
3452 SLIBSUF=".so"
3453 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3454 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3455 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3456 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3457 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3458 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3459 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3460
3461 asflags_filter=echo
3462 cflags_filter=echo
3463 ldflags_filter=echo
3464
3465 AS_C='-c'
3466 AS_O='-o $@'
3467 CC_C='-c'
3468 CC_E='-E -o $@'
3469 CC_O='-o $@'
3470 CXX_C='-c'
3471 CXX_O='-o $@'
3472 OBJCC_C='-c'
3473 OBJCC_E='-E -o $@'
3474 OBJCC_O='-o $@'
3475 X86ASM_O='-o $@'
3476 LD_O='-o $@'
3477 LD_LIB='-l%'
3478 LD_PATH='-L'
3479 HOSTCC_C='-c'
3480 HOSTCC_E='-E -o $@'
3481 HOSTCC_O='-o $@'
3482 HOSTLD_O='-o $@'
3483 NVCC_C='-c'
3484 NVCC_O='-o $@'
3485
3486 host_extralibs='-lm'
3487 host_cflags_filter=echo
3488 host_ldflags_filter=echo
3489
3490 target_path='$(CURDIR)'
3491
3492 # since the object filename is not given with the -MM flag, the compiler
3493 # is only able to print the basename, and we must add the path ourselves
3494 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3495 DEPFLAGS='-MM'
3496
3497 mkdir -p ffbuild
3498
3499 # find source path
3500 if test -f configure; then
3501     source_path=.
3502 else
3503     source_path=$(cd $(dirname "$0"); pwd)
3504     case "$source_path" in
3505         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3506     esac
3507     test -e "$source_path/config.h" &&
3508         die "Out of tree builds are impossible with config.h in source dir."
3509 fi
3510
3511 for v in "$@"; do
3512     r=${v#*=}
3513     l=${v%"$r"}
3514     r=$(sh_quote "$r")
3515     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3516 done
3517
3518 find_things(){
3519     thing=$1
3520     pattern=$2
3521     file=$source_path/$3
3522     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3523 }
3524
3525 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3526 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3527 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3528 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3529 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3530 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3531 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3532 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3533 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3534
3535 find_things_extern(){
3536     thing=$1
3537     pattern=$2
3538     file=$source_path/$3
3539     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3540 }
3541
3542 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3543 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3544
3545 AVCODEC_COMPONENTS_LIST="
3546     $BSF_LIST
3547     $DECODER_LIST
3548     $ENCODER_LIST
3549     $HWACCEL_LIST
3550     $PARSER_LIST
3551 "
3552
3553 AVDEVICE_COMPONENTS_LIST="
3554     $INDEV_LIST
3555     $OUTDEV_LIST
3556 "
3557
3558 AVFILTER_COMPONENTS_LIST="
3559     $FILTER_LIST
3560 "
3561
3562 AVFORMAT_COMPONENTS_LIST="
3563     $DEMUXER_LIST
3564     $MUXER_LIST
3565     $PROTOCOL_LIST
3566 "
3567
3568 ALL_COMPONENTS="
3569     $AVCODEC_COMPONENTS_LIST
3570     $AVDEVICE_COMPONENTS_LIST
3571     $AVFILTER_COMPONENTS_LIST
3572     $AVFORMAT_COMPONENTS_LIST
3573 "
3574
3575 for n in $COMPONENT_LIST; do
3576     v=$(toupper ${n%s})_LIST
3577     eval enable \$$v
3578     eval ${n}_if_any="\$$v"
3579 done
3580
3581 enable $ARCH_EXT_LIST
3582
3583 die_unknown(){
3584     echo "Unknown option \"$1\"."
3585     echo "See $0 --help for available options."
3586     exit 1
3587 }
3588
3589 print_in_columns() {
3590     cols=$(expr $ncols / 24)
3591     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3592 }
3593
3594 show_list() {
3595     suffix=_$1
3596     shift
3597     echo $* | sed s/$suffix//g | print_in_columns
3598     exit 0
3599 }
3600
3601 rand_list(){
3602     IFS=', '
3603     set -- $*
3604     unset IFS
3605     for thing; do
3606         comp=${thing%:*}
3607         prob=${thing#$comp}
3608         prob=${prob#:}
3609         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3610         echo "prob ${prob:-0.5}"
3611         printf '%s\n' $comp
3612     done
3613 }
3614
3615 do_random(){
3616     action=$1
3617     shift
3618     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3619     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3620 }
3621
3622 for opt do
3623     optval="${opt#*=}"
3624     case "$opt" in
3625         --extra-ldflags=*)
3626             add_ldflags $optval
3627         ;;
3628         --extra-ldexeflags=*)
3629             add_ldexeflags $optval
3630         ;;
3631         --extra-ldlibflags=*)
3632             add_ldlibflags $optval
3633         ;;
3634         --extra-libs=*)
3635             add_extralibs $optval
3636         ;;
3637         --disable-devices)
3638             disable $INDEV_LIST $OUTDEV_LIST
3639         ;;
3640         --enable-debug=*)
3641             debuglevel="$optval"
3642         ;;
3643         --disable-programs)
3644             disable $PROGRAM_LIST
3645         ;;
3646         --disable-everything)
3647             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3648         ;;
3649         --disable-all)
3650             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3651             disable $LIBRARY_LIST $PROGRAM_LIST doc
3652             enable avutil
3653         ;;
3654         --enable-random|--disable-random)
3655             action=${opt%%-random}
3656             do_random ${action#--} $COMPONENT_LIST
3657         ;;
3658         --enable-random=*|--disable-random=*)
3659             action=${opt%%-random=*}
3660             do_random ${action#--} $optval
3661         ;;
3662         --enable-sdl)
3663             enable sdl2
3664         ;;
3665         --enable-*=*|--disable-*=*)
3666             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3667             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3668             eval list=\$$(toupper $thing)_LIST
3669             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3670             list=$(filter "$name" $list)
3671             [ "$list" = "" ] && warn "Option $opt did not match anything"
3672             $action $list
3673         ;;
3674         --enable-yasm|--disable-yasm)
3675             warn "The ${opt} option is only provided for compatibility and will be\n"\
3676                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3677             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3678         ;;
3679         --yasmexe=*)
3680             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3681                  "removed in the future. Use --x86asmexe instead."
3682             x86asmexe="$optval"
3683         ;;
3684         --enable-?*|--disable-?*)
3685             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3686             if is_in $option $COMPONENT_LIST; then
3687                 test $action = disable && action=unset
3688                 eval $action \$$(toupper ${option%s})_LIST
3689             elif is_in $option $CMDLINE_SELECT; then
3690                 $action $option
3691             else
3692                 die_unknown $opt
3693             fi
3694         ;;
3695         --list-*)
3696             NAME="${opt#--list-}"
3697             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3698             NAME=${NAME%s}
3699             eval show_list $NAME \$$(toupper $NAME)_LIST
3700         ;;
3701         --help|-h) show_help
3702         ;;
3703         --quiet|-q) quiet=yes
3704         ;;
3705         --fatal-warnings) enable fatal_warnings
3706         ;;
3707         --libfuzzer=*)
3708             libfuzzer_path="$optval"
3709         ;;
3710         *)
3711             optname="${opt%%=*}"
3712             optname="${optname#--}"
3713             optname=$(echo "$optname" | sed 's/-/_/g')
3714             if is_in $optname $CMDLINE_SET; then
3715                 eval $optname='$optval'
3716             elif is_in $optname $CMDLINE_APPEND; then
3717                 append $optname "$optval"
3718             else
3719                 die_unknown $opt
3720             fi
3721         ;;
3722     esac
3723 done
3724
3725 for e in $env; do
3726     eval "export $e"
3727 done
3728
3729 if disabled autodetect; then
3730
3731     # Unless iconv is explicitely disabled by the user, we still want to probe
3732     # for the iconv from the libc.
3733     disabled iconv || enable libc_iconv
3734
3735     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3736     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3737 fi
3738 # Mark specifically enabled, but normally autodetected libraries as requested.
3739 for lib in $AUTODETECT_LIBS; do
3740     enabled $lib && request $lib
3741 done
3742 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3743 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3744 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3745
3746 disabled logging && logfile=/dev/null
3747
3748 die_license_disabled() {
3749     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3750 }
3751
3752 die_license_disabled_gpl() {
3753     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3754 }
3755
3756 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3757 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3758
3759 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3760 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3761
3762 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3763
3764 # Disable all the library-specific components if the library itself
3765 # is disabled, see AVCODEC_LIST and following _LIST variables.
3766
3767 disable_components(){
3768     disabled ${1} && disable $(
3769         eval components="\$$(toupper ${1})_COMPONENTS"
3770         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3771     )
3772 }
3773
3774 map 'disable_components $v' $LIBRARY_LIST
3775
3776 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3777 set >> $logfile
3778
3779 test -n "$valgrind" && toolchain="valgrind-memcheck"
3780
3781 enabled ossfuzz && {
3782     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3783     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3784 }
3785
3786 case "$toolchain" in
3787     *-asan)
3788         cc_default="${toolchain%-asan}"
3789         add_cflags  -fsanitize=address
3790         add_ldflags -fsanitize=address
3791     ;;
3792     *-msan)
3793         cc_default="${toolchain%-msan}"
3794         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3795         add_ldflags -fsanitize=memory
3796     ;;
3797     *-tsan)
3798         cc_default="${toolchain%-tsan}"
3799         add_cflags  -fsanitize=thread -fPIE
3800         add_ldflags -fsanitize=thread -pie
3801         case "$toolchain" in
3802             gcc-tsan)
3803                 add_cflags  -fPIC
3804                 add_ldflags -fPIC
3805                 ;;
3806         esac
3807     ;;
3808     *-usan)
3809         cc_default="${toolchain%-usan}"
3810         add_cflags  -fsanitize=undefined
3811         add_ldflags -fsanitize=undefined
3812     ;;
3813     valgrind-*)
3814         target_exec_default="valgrind"
3815         case "$toolchain" in
3816             valgrind-massif)
3817                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3818                 ;;
3819             valgrind-memcheck)
3820                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3821                 ;;
3822         esac
3823     ;;
3824     msvc)
3825         # Check whether the current MSVC version needs the C99 converter.
3826         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3827         # support enough of C99 to build ffmpeg. Default to the new
3828         # behaviour if the regexp was unable to match anything, since this
3829         # successfully parses the version number of existing supported
3830         # versions that require the converter (MSVC 2010 and 2012).
3831         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3832         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3833             cc_default="cl"
3834             cxx_default="cl"
3835         else
3836             cc_default="c99wrap cl"
3837             cxx_default="c99wrap cl"
3838         fi
3839         ld_default="$source_path/compat/windows/mslink"
3840         nm_default="dumpbin -symbols"
3841         ar_default="lib"
3842         case "$arch" in
3843         arm*)
3844             as_default="armasm"
3845             ;;
3846         esac
3847         target_os_default="win32"
3848         # Use a relative path for TMPDIR. This makes sure all the
3849         # ffconf temp files are written with a relative path, avoiding
3850         # issues with msys/win32 path conversion for MSVC parameters
3851         # such as -Fo<file> or -out:<file>.
3852         TMPDIR=.
3853     ;;
3854     icl)
3855         cc_default="icl"
3856         ld_default="xilink"
3857         nm_default="dumpbin -symbols"
3858         ar_default="xilib"
3859         target_os_default="win32"
3860         TMPDIR=.
3861     ;;
3862     gcov)
3863         add_cflags  -fprofile-arcs -ftest-coverage
3864         add_ldflags -fprofile-arcs -ftest-coverage
3865     ;;
3866     llvm-cov)
3867         add_cflags -fprofile-arcs -ftest-coverage
3868         add_ldflags --coverage
3869     ;;
3870     hardened)
3871         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3872         add_cflags   -fno-strict-overflow -fstack-protector-all
3873         add_ldflags  -Wl,-z,relro -Wl,-z,now
3874         add_cflags   -fPIE
3875         add_ldexeflags -fPIE -pie
3876     ;;
3877     ?*)
3878         die "Unknown toolchain $toolchain"
3879     ;;
3880 esac
3881
3882 test -n "$cross_prefix" && enable cross_compile
3883
3884 if enabled cross_compile; then
3885     test -n "$arch" && test -n "$target_os" ||
3886         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3887 fi
3888
3889 ar_default="${cross_prefix}${ar_default}"
3890 cc_default="${cross_prefix}${cc_default}"
3891 cxx_default="${cross_prefix}${cxx_default}"
3892 nm_default="${cross_prefix}${nm_default}"
3893 pkg_config_default="${cross_prefix}${pkg_config_default}"
3894 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3895     ranlib_default="${cross_prefix}${ranlib_default} -D"
3896 else
3897     ranlib_default="${cross_prefix}${ranlib_default}"
3898 fi
3899 strip_default="${cross_prefix}${strip_default}"
3900 windres_default="${cross_prefix}${windres_default}"
3901
3902 sysinclude_default="${sysroot}/usr/include"
3903
3904 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3905     target_exec target_os x86asmexe nvcc
3906 enabled cross_compile || host_cc_default=$cc
3907 set_default host_cc
3908
3909 pkg_config_fail_message=""
3910 if ! $pkg_config --version >/dev/null 2>&1; then
3911     warn "$pkg_config not found, library detection may fail."
3912     pkg_config=false
3913 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3914     pkg_config_fail_message="
3915 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3916 fi
3917
3918 if test $doxygen != $doxygen_default && \
3919   ! $doxygen --version >/dev/null 2>&1; then
3920     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3921 fi
3922
3923 exesuf() {
3924     case $1 in
3925         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3926     esac
3927 }
3928
3929 EXESUF=$(exesuf $target_os)
3930 HOSTEXESUF=$(exesuf $host_os)
3931
3932 # set temporary file name
3933 : ${TMPDIR:=$TEMPDIR}
3934 : ${TMPDIR:=$TMP}
3935 : ${TMPDIR:=/tmp}
3936
3937 if [ -n "$tempprefix" ] ; then
3938     mktemp(){
3939         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3940         echo "$tmpname"
3941         mkdir "$tmpname"
3942     }
3943 elif ! check_cmd mktemp -u XXXXXX; then
3944     # simple replacement for missing mktemp
3945     # NOT SAFE FOR GENERAL USE
3946     mktemp(){
3947         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3948         echo "$tmpname"
3949         mkdir "$tmpname"
3950     }
3951 fi
3952
3953 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3954     die "Unable to create temporary directory in $TMPDIR."
3955
3956 tmpfile(){
3957     tmp="${FFTMPDIR}/test"$2
3958     (set -C; exec > $tmp) 2> /dev/null ||
3959         die "Unable to create temporary file in $FFTMPDIR."
3960     eval $1=$tmp
3961 }
3962
3963 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3964 trap 'exit 2' INT
3965
3966 tmpfile TMPASM .asm
3967 tmpfile TMPC   .c
3968 tmpfile TMPCPP .cpp
3969 tmpfile TMPE   $EXESUF
3970 tmpfile TMPH   .h
3971 tmpfile TMPM   .m
3972 tmpfile TMPO   .o
3973 tmpfile TMPS   .S
3974 tmpfile TMPSH  .sh
3975 tmpfile TMPV   .ver
3976
3977 unset -f mktemp
3978
3979 chmod +x $TMPE
3980
3981 # make sure we can execute files in $TMPDIR
3982 cat > $TMPSH 2>> $logfile <<EOF
3983 #! /bin/sh
3984 EOF
3985 chmod +x $TMPSH >> $logfile 2>&1
3986 if ! $TMPSH >> $logfile 2>&1; then
3987     cat <<EOF
3988 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3989 variable to another directory and make sure that it is not mounted noexec.
3990 EOF
3991     die "Sanity test failed."
3992 fi
3993
3994 armasm_flags(){
3995     for flag; do
3996         case $flag in
3997             # Filter out MSVC cl.exe options from cflags that shouldn't
3998             # be passed to gas-preprocessor
3999             -M[TD]*)                                            ;;
4000             *)                  echo $flag                      ;;
4001         esac
4002    done
4003 }
4004
4005 ccc_flags(){
4006     for flag; do
4007         case $flag in
4008             -std=c99)           echo -c99                       ;;
4009             -mcpu=*)            echo -arch ${flag#*=}           ;;
4010             -mieee)             echo -ieee                      ;;
4011             -O*|-fast)          echo $flag                      ;;
4012             -fno-math-errno)    echo -assume nomath_errno       ;;
4013             -g)                 echo -g3                        ;;
4014             -Wall)              echo -msg_enable level2         ;;
4015             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
4016             -Wl,*)              echo $flag                      ;;
4017             -f*|-W*)                                            ;;
4018             *)                  echo $flag                      ;;
4019         esac
4020    done
4021 }
4022
4023 cparser_flags(){
4024     for flag; do
4025         case $flag in
4026             -Wno-switch)             echo -Wno-switch-enum ;;
4027             -Wno-format-zero-length) ;;
4028             -Wdisabled-optimization) ;;
4029             -Wno-pointer-sign)       echo -Wno-other ;;
4030             *)                       echo $flag ;;
4031         esac
4032     done
4033 }
4034
4035 msvc_common_flags(){
4036     for flag; do
4037         case $flag in
4038             # In addition to specifying certain flags under the compiler
4039             # specific filters, they must be specified here as well or else the
4040             # generic catch all at the bottom will print the original flag.
4041             -Wall)                ;;
4042             -Wextra)              ;;
4043             -std=c99)             ;;
4044             # Common flags
4045             -fomit-frame-pointer) ;;
4046             -g)                   echo -Z7 ;;
4047             -fno-math-errno)      ;;
4048             -fno-common)          ;;
4049             -fno-signed-zeros)    ;;
4050             -fPIC)                ;;
4051             -mthumb)              ;;
4052             -march=*)             ;;
4053             -lz)                  echo zlib.lib ;;
4054             -lx264)               echo libx264.lib ;;
4055             -lstdc++)             ;;
4056             -l*)                  echo ${flag#-l}.lib ;;
4057             -LARGEADDRESSAWARE)   echo $flag ;;
4058             -L*)                  echo -libpath:${flag#-L} ;;
4059             *)                    echo $flag ;;
4060         esac
4061     done
4062 }
4063
4064 msvc_flags(){
4065     msvc_common_flags "$@"
4066     for flag; do
4067         case $flag in
4068             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4069                                        -wd4554 ;;
4070             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4071                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4072                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4073                                        -wd4307 \
4074                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4075         esac
4076     done
4077 }
4078
4079 icl_flags(){
4080     msvc_common_flags "$@"
4081     for flag; do
4082         case $flag in
4083             # Despite what Intel's documentation says -Wall, which is supported
4084             # on Windows, does enable remarks so disable them here.
4085             -Wall)                echo $flag -Qdiag-disable:remark ;;
4086             -std=c99)             echo -Qstd=c99 ;;
4087             -flto)                echo -ipo ;;
4088         esac
4089     done
4090 }
4091
4092 icc_flags(){
4093     for flag; do
4094         case $flag in
4095             -flto)                echo -ipo ;;
4096             *)                    echo $flag ;;
4097         esac
4098     done
4099 }
4100
4101 pgi_flags(){
4102     for flag; do
4103         case $flag in
4104             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4105             -fomit-frame-pointer) echo -Mnoframe ;;
4106             -g)                   echo -gopt ;;
4107             *)                    echo $flag ;;
4108         esac
4109     done
4110 }
4111
4112 suncc_flags(){
4113     for flag; do
4114         case $flag in
4115             -march=*|-mcpu=*)
4116                 case "${flag#*=}" in
4117                     native)                   echo -xtarget=native       ;;
4118                     v9|niagara)               echo -xarch=sparc          ;;
4119                     ultrasparc)               echo -xarch=sparcvis       ;;
4120                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4121                     i586|pentium)             echo -xchip=pentium        ;;
4122                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4123                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4124                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4125                     pentium4*)          echo -xtarget=pentium4           ;;
4126                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4127                     *-sse3)             echo -xarch=sse3                 ;;
4128                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4129                     bonnell)                   echo -xarch=ssse3         ;;
4130                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4131                     westmere)                  echo -xtarget=westmere    ;;
4132                     silvermont)                echo -xarch=sse4_2        ;;
4133                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4134                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4135                                                echo -xarch=avx           ;;
4136                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4137                     btver1)                    echo -xarch=amdsse4a      ;;
4138                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4139                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4140                     k8|opteron|athlon64|athlon-fx)
4141                                                echo -xarch=sse2a         ;;
4142                     athlon*)                   echo -xarch=pentium_proa  ;;
4143                 esac
4144                 ;;
4145             -std=c99)             echo -xc99              ;;
4146             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4147             -fPIC)                echo -KPIC -xcode=pic32 ;;
4148             -W*,*)                echo $flag              ;;
4149             -f*-*|-W*|-mimpure-text)                      ;;
4150             -shared)              echo -G                 ;;
4151             *)                    echo $flag              ;;
4152         esac
4153     done
4154 }
4155
4156 tms470_flags(){
4157     for flag; do
4158         case $flag in
4159             -march=*|-mcpu=*)
4160                 case "${flag#*=}" in
4161                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4162                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4163                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4164                     armv6*|arm11*)          echo -mv=6   ;;
4165                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4166                                             echo -mv=5e  ;;
4167                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4168                 esac
4169                 ;;
4170             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4171             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4172             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4173             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4174             -msoft-float)   echo --float_support=vfplib       ;;
4175             -O[0-3]|-mf=*)  echo $flag                        ;;
4176             -g)             echo -g -mn                       ;;
4177             -pds=*)         echo $flag                        ;;
4178             -D*|-I*)        echo $flag                        ;;
4179             --gcc|--abi=*)  echo $flag                        ;;
4180             -me)            echo $flag                        ;;
4181         esac
4182     done
4183 }
4184
4185 probe_cc(){
4186     pfx=$1
4187     _cc=$2
4188     first=$3
4189
4190     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4191     unset _ld_o _ldflags _ld_lib _ld_path
4192     unset _depflags _DEPCMD _DEPFLAGS
4193     _flags_filter=echo
4194
4195     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4196         true # no-op to avoid reading stdin in following checks
4197     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4198         _type=llvm_gcc
4199         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4200         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4201         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4202         _cflags_speed='-O3'
4203         _cflags_size='-Os'
4204     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4205         _type=gcc
4206         gcc_version=$($_cc --version | head -n1)
4207         gcc_basever=$($_cc -dumpversion)
4208         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4209         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4210         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4211         case $gcc_basever in
4212             2) ;;
4213             2.*) ;;
4214             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4215         esac
4216         if [ "$first" = true ]; then
4217             case $gcc_basever in
4218                 4.2*)
4219                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4220             esac
4221         fi
4222         _cflags_speed='-O3'
4223         _cflags_size='-Os'
4224     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4225         _type=icc
4226         _ident=$($_cc --version | head -n1)
4227         _depflags='-MMD'
4228         _cflags_speed='-O3'
4229         _cflags_size='-Os'
4230         _cflags_noopt='-O1'
4231         _flags_filter=icc_flags
4232     elif $_cc -v 2>&1 | grep -q xlc; then
4233         _type=xlc
4234         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4235         _cflags_speed='-O5'
4236         _cflags_size='-O5 -qcompact'
4237     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4238         _type=ccc
4239         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4240         _DEPFLAGS='-M'
4241         _cflags_speed='-fast'
4242         _cflags_size='-O1'
4243         _flags_filter=ccc_flags
4244     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4245         test -d "$sysroot" || die "No valid sysroot specified."
4246         _type=armcc
4247         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4248         armcc_conf="$PWD/armcc.conf"
4249         $_cc --arm_linux_configure                 \
4250              --arm_linux_config_file="$armcc_conf" \
4251              --configure_sysroot="$sysroot"        \
4252              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4253              die "Error creating armcc configuration file."
4254         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4255         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4256         as_default="${cross_prefix}gcc"
4257         _depflags='-MMD'
4258         _cflags_speed='-O3'
4259         _cflags_size='-Os'
4260     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4261         _type=tms470
4262         _ident=$($_cc -version | head -n1 | tr -s ' ')
4263         _flags='--gcc --abi=eabi -me'
4264         _cc_e='-ppl -fe=$@'
4265         _cc_o='-fe=$@'
4266         _depflags='-ppa -ppd=$(@:.o=.d)'
4267         _cflags_speed='-O3 -mf=5'
4268         _cflags_size='-O3 -mf=2'
4269         _flags_filter=tms470_flags
4270     elif $_cc -v 2>&1 | grep -q clang; then
4271         _type=clang
4272         _ident=$($_cc --version 2>/dev/null | head -n1)
4273         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4274         _cflags_speed='-O3'
4275         _cflags_size='-Oz'
4276     elif $_cc -V 2>&1 | grep -q Sun; then
4277         _type=suncc
4278         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4279         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4280         _DEPFLAGS='-xM1 -xc99'
4281         _ldflags='-std=c99'
4282         _cflags_speed='-O5'
4283         _cflags_size='-O5 -xspace'
4284         _flags_filter=suncc_flags
4285     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4286         _type=pathscale
4287         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4288         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4289         _cflags_speed='-O2'
4290         _cflags_size='-Os'
4291         _flags_filter='filter_out -Wdisabled-optimization'
4292     elif $_cc -v 2>&1 | grep -q Open64; then
4293         _type=open64
4294         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4295         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4296         _cflags_speed='-O2'
4297         _cflags_size='-Os'
4298         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4299     elif $_cc -V 2>&1 | grep -q Portland; then
4300         _type=pgi
4301         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4302         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4303         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4304         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4305         _cflags_noopt="-O"
4306         _flags_filter=pgi_flags
4307     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4308         _type=armasm
4309         _ident=$($_cc | head -n1)
4310         # 4509: "This form of conditional instruction is deprecated"
4311         _flags="-nologo -ignore 4509"
4312         _flags_filter=armasm_flags
4313     elif $_cc 2>&1 | grep -q Intel; then
4314         _type=icl
4315         _ident=$($_cc 2>&1 | head -n1)
4316         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4317         # Not only is O3 broken on 13.x+ but it is slower on all previous
4318         # versions (tested) as well.
4319         _cflags_speed="-O2"
4320         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4321         if $_cc 2>&1 | grep -q Linker; then
4322             _ld_o='-out:$@'
4323         else
4324             _ld_o='-Fe$@'
4325         fi
4326         _cc_o='-Fo$@'
4327         _cc_e='-P'
4328         _flags_filter=icl_flags
4329         _ld_lib='lib%.a'
4330         _ld_path='-libpath:'
4331         # -Qdiag-error to make icl error when seeing certain unknown arguments
4332         _flags='-nologo -Qdiag-error:4044,10157'
4333         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4334         # with MSVC which enables it by default.
4335         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4336         disable stripping
4337     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4338         # lld can emulate multiple different linkers; in ms link.exe mode,
4339         # the -? parameter gives the help output which contains an identifyable
4340         # string, while it gives an error in other modes.
4341         _type=lld-link
4342         # The link.exe mode doesn't have a switch for getting the version,
4343         # but we can force it back to gnu mode and get the version from there.
4344         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4345         _ld_o='-out:$@'
4346         _flags_filter=msvc_flags
4347         _ld_lib='lib%.a'
4348         _ld_path='-libpath:'
4349     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4350         _type=msvc
4351         _ident=$($_cc 2>&1 | head -n1)
4352         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4353         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4354         _cflags_speed="-O2"
4355         _cflags_size="-O1"
4356         _cflags_noopt="-O1"
4357         if $_cc -nologo- 2>&1 | grep -q Linker; then
4358             _ld_o='-out:$@'
4359         else
4360             _ld_o='-Fe$@'
4361         fi
4362         _cc_o='-Fo$@'
4363         _cc_e='-P -Fi$@'
4364         _flags_filter=msvc_flags
4365         _ld_lib='lib%.a'
4366         _ld_path='-libpath:'
4367         _flags='-nologo'
4368         disable stripping
4369     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4370         _type=cparser
4371         _ident=$($_cc --version | head -n1)
4372         _depflags='-MMD'
4373         _cflags_speed='-O4'
4374         _cflags_size='-O2'
4375         _flags_filter=cparser_flags
4376     fi
4377
4378     eval ${pfx}_type=\$_type
4379     eval ${pfx}_ident=\$_ident
4380 }
4381
4382 set_ccvars(){
4383     eval ${1}_C=\${_cc_c-\${${1}_C}}
4384     eval ${1}_E=\${_cc_e-\${${1}_E}}
4385     eval ${1}_O=\${_cc_o-\${${1}_O}}
4386
4387     if [ -n "$_depflags" ]; then
4388         eval ${1}_DEPFLAGS=\$_depflags
4389     else
4390         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4391         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4392         eval DEP${1}FLAGS=\$_flags
4393     fi
4394 }
4395
4396 probe_cc cc "$cc" "true"
4397 cflags_filter=$_flags_filter
4398 cflags_speed=$_cflags_speed
4399 cflags_size=$_cflags_size
4400 cflags_noopt=$_cflags_noopt
4401 add_cflags $_flags $_cflags
4402 cc_ldflags=$_ldflags
4403 set_ccvars CC
4404 set_ccvars CXX
4405
4406 probe_cc hostcc "$host_cc"
4407 host_cflags_filter=$_flags_filter
4408 host_cflags_speed=$_cflags_speed
4409 add_host_cflags  $_flags $_cflags
4410 set_ccvars HOSTCC
4411
4412 test -n "$cc_type" && enable $cc_type ||
4413     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4414
4415 : ${as_default:=$cc}
4416 : ${objcc_default:=$cc}
4417 : ${dep_cc_default:=$cc}
4418 : ${ld_default:=$cc}
4419 : ${host_ld_default:=$host_cc}
4420 set_default ar as objcc dep_cc ld ln_s host_ld windres
4421
4422 probe_cc as "$as"
4423 asflags_filter=$_flags_filter
4424 add_asflags $_flags $_cflags
4425 set_ccvars AS
4426
4427 probe_cc objcc "$objcc"
4428 objcflags_filter=$_flags_filter
4429 add_objcflags $_flags $_cflags
4430 set_ccvars OBJC
4431
4432 probe_cc ld "$ld"
4433 ldflags_filter=$_flags_filter
4434 add_ldflags $_flags $_ldflags
4435 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4436 LD_O=${_ld_o-$LD_O}
4437 LD_LIB=${_ld_lib-$LD_LIB}
4438 LD_PATH=${_ld_path-$LD_PATH}
4439
4440 probe_cc hostld "$host_ld"
4441 host_ldflags_filter=$_flags_filter
4442 add_host_ldflags $_flags $_ldflags
4443 HOSTLD_O=${_ld_o-$HOSTLD_O}
4444
4445 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4446     probe_cc depcc "$dep_cc"
4447     CCDEP=${_DEPCMD:-$DEPCMD}
4448     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4449     DEPCCFLAGS=$_flags
4450 fi
4451
4452 if $ar 2>&1 | grep -q Microsoft; then
4453     arflags="-nologo"
4454     ar_o='-out:$@'
4455 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4456     arflags="rq"
4457     ar_o='$@'
4458 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4459     arflags='-Xany -r -c'
4460     ar_o='$@'
4461 elif $ar 2>&1 | grep -q "\[D\] "; then
4462     arflags="rcD"
4463     ar_o='$@'
4464 else
4465     arflags="rc"
4466     ar_o='$@'
4467 fi
4468
4469 add_cflags $extra_cflags
4470 add_cxxflags $extra_cxxflags
4471 add_objcflags $extra_objcflags
4472 add_asflags $extra_cflags
4473
4474 if test -n "$sysroot"; then
4475     case "$cc_type" in
4476         gcc|llvm_gcc|clang)
4477             add_cppflags --sysroot="$sysroot"
4478             add_ldflags --sysroot="$sysroot"
4479 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4480             add_cppflags -isysroot "$sysroot"
4481             add_ldflags -isysroot "$sysroot"
4482         ;;
4483         tms470)
4484             add_cppflags -I"$sysinclude"
4485             add_ldflags  --sysroot="$sysroot"
4486         ;;
4487     esac
4488 fi
4489
4490 if test "$cpu" = host; then
4491     enabled cross_compile &&
4492         die "--cpu=host makes no sense when cross-compiling."
4493
4494     case "$cc_type" in
4495         gcc|llvm_gcc)
4496             check_native(){
4497                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4498                 sed -n "/cc1.*$1=/{
4499                             s/.*$1=\\([^ ]*\\).*/\\1/
4500                             p
4501                             q
4502                         }" $TMPE
4503             }
4504             cpu=$(check_native -march || check_native -mcpu)
4505         ;;
4506         clang)
4507             check_native(){
4508                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4509                 sed -n "/cc1.*-target-cpu /{
4510                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4511                             p
4512                             q
4513                         }" $TMPE
4514             }
4515             cpu=$(check_native -march)
4516         ;;
4517     esac
4518
4519     test "${cpu:-host}" = host &&
4520         die "--cpu=host not supported with compiler $cc"
4521 fi
4522
4523 # Deal with common $arch aliases
4524 case "$arch" in
4525     aarch64|arm64)
4526         arch="aarch64"
4527     ;;
4528     arm*|iPad*|iPhone*)
4529         arch="arm"
4530     ;;
4531     mips*|IP*)
4532         case "$arch" in
4533         *el)
4534             add_cppflags -EL
4535             add_ldflags -EL
4536         ;;
4537         *eb)
4538             add_cppflags -EB
4539             add_ldflags -EB
4540         ;;
4541         esac
4542         arch="mips"
4543     ;;
4544     parisc*|hppa*)
4545         arch="parisc"
4546     ;;
4547     "Power Macintosh"|ppc*|powerpc*)
4548         arch="ppc"
4549     ;;
4550     s390|s390x)
4551         arch="s390"
4552     ;;
4553     sh4|sh)
4554         arch="sh4"
4555     ;;
4556     sun4*|sparc*)
4557         arch="sparc"
4558     ;;
4559     tilegx|tile-gx)
4560         arch="tilegx"
4561     ;;
4562     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4563         arch="x86"
4564     ;;
4565 esac
4566
4567 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4568 enable $arch
4569
4570 # Add processor-specific flags
4571 if enabled aarch64; then
4572
4573     case $cpu in
4574         armv*)
4575             cpuflags="-march=$cpu"
4576         ;;
4577         *)
4578             cpuflags="-mcpu=$cpu"
4579         ;;
4580     esac
4581
4582 elif enabled alpha; then
4583
4584     cpuflags="-mcpu=$cpu"
4585
4586 elif enabled arm; then
4587
4588     check_arm_arch() {
4589         check_cpp_condition stddef.h \
4590             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4591             $cpuflags
4592     }
4593
4594     probe_arm_arch() {
4595         if   check_arm_arch 4;        then echo armv4
4596         elif check_arm_arch 4T;       then echo armv4t
4597         elif check_arm_arch 5;        then echo armv5
4598         elif check_arm_arch 5E;       then echo armv5e
4599         elif check_arm_arch 5T;       then echo armv5t
4600         elif check_arm_arch 5TE;      then echo armv5te
4601         elif check_arm_arch 5TEJ;     then echo armv5te
4602         elif check_arm_arch 6;        then echo armv6
4603         elif check_arm_arch 6J;       then echo armv6j
4604         elif check_arm_arch 6K;       then echo armv6k
4605         elif check_arm_arch 6Z;       then echo armv6z
4606         elif check_arm_arch 6ZK;      then echo armv6zk
4607         elif check_arm_arch 6T2;      then echo armv6t2
4608         elif check_arm_arch 7;        then echo armv7
4609         elif check_arm_arch 7A  7_A;  then echo armv7-a
4610         elif check_arm_arch 7S;       then echo armv7-a
4611         elif check_arm_arch 7R  7_R;  then echo armv7-r
4612         elif check_arm_arch 7M  7_M;  then echo armv7-m
4613         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4614         elif check_arm_arch 8A  8_A;  then echo armv8-a
4615         fi
4616     }
4617
4618     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4619
4620     case $cpu in
4621         armv*)
4622             cpuflags="-march=$cpu"
4623             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4624         ;;
4625         *)
4626             cpuflags="-mcpu=$cpu"
4627             case $cpu in
4628                 cortex-a*)                               subarch=armv7a  ;;
4629                 cortex-r*)                               subarch=armv7r  ;;
4630                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4631                 arm11*)                                  subarch=armv6   ;;
4632                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4633                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4634                 *)                             subarch=$(probe_arm_arch) ;;
4635             esac
4636         ;;
4637     esac
4638
4639     case "$subarch" in
4640         armv5t*)    enable fast_clz                ;;
4641         armv[6-8]*)
4642             enable fast_clz
4643             disabled fast_unaligned || enable fast_unaligned
4644             ;;
4645     esac
4646
4647 elif enabled avr32; then
4648
4649     case $cpu in
4650         ap7[02]0[0-2])
4651             subarch="avr32_ap"
4652             cpuflags="-mpart=$cpu"
4653         ;;
4654         ap)
4655             subarch="avr32_ap"
4656             cpuflags="-march=$cpu"
4657         ;;
4658         uc3[ab]*)
4659             subarch="avr32_uc"
4660             cpuflags="-mcpu=$cpu"
4661         ;;
4662         uc)
4663             subarch="avr32_uc"
4664             cpuflags="-march=$cpu"
4665         ;;
4666     esac
4667
4668 elif enabled bfin; then
4669
4670     cpuflags="-mcpu=$cpu"
4671
4672 elif enabled mips; then
4673
4674     cpuflags="-march=$cpu"
4675
4676     if [ "$cpu" != "generic" ]; then
4677         disable mips32r2
4678         disable mips32r5
4679         disable mips64r2
4680         disable mips32r6
4681         disable mips64r6
4682         disable loongson2
4683         disable loongson3
4684
4685         case $cpu in
4686             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4687                 enable mips32r2
4688                 disable msa
4689             ;;
4690             p5600|i6400|p6600)
4691                 disable mipsdsp
4692                 disable mipsdspr2
4693             ;;
4694             loongson*)
4695                 enable loongson2
4696                 enable loongson3
4697                 enable local_aligned_8 local_aligned_16 local_aligned_32
4698                 enable simd_align_16
4699                 enable fast_64bit
4700                 enable fast_clz
4701                 enable fast_cmov
4702                 enable fast_unaligned
4703                 disable aligned_stack
4704                 disable mipsfpu
4705                 disable mipsdsp
4706                 disable mipsdspr2
4707                 case $cpu in
4708                     loongson3*)
4709                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4710                     ;;
4711                     loongson2e)
4712                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4713                     ;;
4714                     loongson2f)
4715                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4716                     ;;
4717                 esac
4718             ;;
4719             *)
4720                 # Unknown CPU. Disable everything.
4721                 warn "unknown CPU. Disabling all MIPS optimizations."
4722                 disable mipsfpu
4723                 disable mipsdsp
4724                 disable mipsdspr2
4725                 disable msa
4726                 disable mmi
4727             ;;
4728         esac
4729
4730         case $cpu in
4731             24kc)
4732                 disable mipsfpu
4733                 disable mipsdsp
4734                 disable mipsdspr2
4735             ;;
4736             24kf*)
4737                 disable mipsdsp
4738                 disable mipsdspr2
4739             ;;
4740             24kec|34kc|1004kc)
4741                 disable mipsfpu
4742                 disable mipsdspr2
4743             ;;
4744             24kef*|34kf*|1004kf*)
4745                 disable mipsdspr2
4746             ;;
4747             74kc)
4748                 disable mipsfpu
4749             ;;
4750             p5600)
4751                 enable mips32r5
4752                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4753             ;;
4754             i6400)
4755                 enable mips64r6
4756                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4757             ;;
4758             p6600)
4759                 enable mips64r6
4760                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4761             ;;
4762         esac
4763     else
4764         # We do not disable anything. Is up to the user to disable the unwanted features.
4765         warn 'generic cpu selected'
4766     fi
4767
4768 elif enabled ppc; then
4769
4770     disable ldbrx
4771
4772     case $(tolower $cpu) in
4773         601|ppc601|powerpc601)
4774             cpuflags="-mcpu=601"
4775             disable altivec
4776         ;;
4777         603*|ppc603*|powerpc603*)
4778             cpuflags="-mcpu=603"
4779             disable altivec
4780         ;;
4781         604*|ppc604*|powerpc604*)
4782             cpuflags="-mcpu=604"
4783             disable altivec
4784         ;;
4785         g3|75*|ppc75*|powerpc75*)
4786             cpuflags="-mcpu=750"
4787             disable altivec
4788         ;;
4789         g4|745*|ppc745*|powerpc745*)
4790             cpuflags="-mcpu=7450"
4791             disable vsx
4792         ;;
4793         74*|ppc74*|powerpc74*)
4794             cpuflags="-mcpu=7400"
4795             disable vsx
4796         ;;
4797         g5|970|ppc970|powerpc970)
4798             cpuflags="-mcpu=970"
4799             disable vsx
4800         ;;
4801         power[3-6]*)
4802             cpuflags="-mcpu=$cpu"
4803             disable vsx
4804         ;;
4805         power[7-8]*)
4806             cpuflags="-mcpu=$cpu"
4807         ;;
4808         cell)
4809             cpuflags="-mcpu=cell"
4810             enable ldbrx
4811             disable vsx
4812         ;;
4813         e500mc)
4814             cpuflags="-mcpu=e500mc"
4815             disable altivec
4816         ;;
4817         e500v2)
4818             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4819             disable altivec
4820             disable dcbzl
4821         ;;
4822         e500)
4823             cpuflags="-mcpu=8540 -mhard-float"
4824             disable altivec
4825             disable dcbzl
4826         ;;
4827     esac
4828
4829 elif enabled sparc; then
4830
4831     case $cpu in
4832         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4833             cpuflags="-mcpu=$cpu"
4834         ;;
4835         ultrasparc*|niagara[234])
4836             cpuflags="-mcpu=$cpu"
4837         ;;
4838     esac
4839
4840 elif enabled x86; then
4841
4842     case $cpu in
4843         i[345]86|pentium)
4844             cpuflags="-march=$cpu"
4845             disable i686
4846             disable mmx
4847         ;;
4848         # targets that do NOT support nopl and conditional mov (cmov)
4849         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4850             cpuflags="-march=$cpu"
4851             disable i686
4852         ;;
4853         # targets that do support nopl and conditional mov (cmov)
4854         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4855         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4856         |amdfam10|barcelona|b[dt]ver*|znver*)
4857             cpuflags="-march=$cpu"
4858             enable i686
4859             enable fast_cmov
4860         ;;
4861         # targets that do support conditional mov but on which it's slow
4862         pentium4|pentium4m|prescott|nocona)
4863             cpuflags="-march=$cpu"
4864             enable i686
4865             disable fast_cmov
4866         ;;
4867     esac
4868
4869 fi
4870
4871 if [ "$cpu" != generic ]; then
4872     add_cflags  $cpuflags
4873     add_asflags $cpuflags
4874     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4875 fi
4876
4877 # compiler sanity check
4878 check_exec <<EOF
4879 int main(void){ return 0; }
4880 EOF
4881 if test "$?" != 0; then
4882     echo "$cc is unable to create an executable file."
4883     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4884         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4885         echo "Only do this if you know what cross compiling means."
4886     fi
4887     die "C compiler test failed."
4888 fi
4889
4890 add_cppflags -D_ISOC99_SOURCE
4891 add_cxxflags -D__STDC_CONSTANT_MACROS
4892 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4893
4894 # some compilers silently accept -std=c11, so we also need to check that the
4895 # version macro is defined properly
4896 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4897     add_cflags -std=c11 ||
4898     check_cflags -std=c99
4899
4900 check_cppflags -D_FILE_OFFSET_BITS=64
4901 check_cppflags -D_LARGEFILE_SOURCE
4902
4903 add_host_cppflags -D_ISOC99_SOURCE
4904 check_host_cflags -std=c99
4905 check_host_cflags -Wall
4906 check_host_cflags $host_cflags_speed
4907
4908 check_64bit(){
4909     arch32=$1
4910     arch64=$2
4911     expr=$3
4912     check_code cc "" "int test[2*($expr) - 1]" &&
4913         subarch=$arch64 || subarch=$arch32
4914 }
4915
4916 case "$arch" in
4917     aarch64|alpha|ia64)
4918         spic=$shared
4919     ;;
4920     mips)
4921         check_64bit mips mips64 '_MIPS_SIM > 1'
4922         spic=$shared
4923     ;;
4924     parisc)
4925         check_64bit parisc parisc64 'sizeof(void *) > 4'
4926         spic=$shared
4927     ;;
4928     ppc)
4929         check_64bit ppc ppc64 'sizeof(void *) > 4'
4930         spic=$shared
4931     ;;
4932     s390)
4933         check_64bit s390 s390x 'sizeof(void *) > 4'
4934         spic=$shared
4935     ;;
4936     sparc)
4937         check_64bit sparc sparc64 'sizeof(void *) > 4'
4938         spic=$shared
4939     ;;
4940     x86)
4941         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4942         # Treat x32 as x64 for now. Note it also needs spic=$shared
4943         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4944             subarch=x86_64
4945         if test "$subarch" = "x86_64"; then
4946             spic=$shared
4947         fi
4948     ;;
4949     ppc)
4950         check_cc <<EOF && subarch="ppc64"
4951         int test[(int)sizeof(char*) - 7];
4952 EOF
4953     ;;
4954 esac
4955
4956 enable $subarch
4957 enabled spic && enable_weak pic
4958
4959 enabled x86_64 && objformat=elf64 || objformat="elf32"
4960
4961 # OS specific
4962 case $target_os in
4963     aix)
4964         SHFLAGS=-shared
4965         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4966         enabled shared && add_ldflags -Wl,-brtl
4967         ;;
4968     android)
4969         disable symver
4970         enable section_data_rel_ro
4971         SLIB_INSTALL_NAME='$(SLIBNAME)'
4972         SLIB_INSTALL_LINKS=
4973         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4974         ;;
4975     haiku)
4976         prefix_default="/boot/common"
4977         network_extralibs="-lnetwork"
4978         host_extralibs=
4979         ;;
4980     sunos)
4981         SHFLAGS='-shared -Wl,-h,$$(@F)'
4982         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4983         network_extralibs="-lsocket -lnsl"
4984         add_cppflags -D__EXTENSIONS__
4985         # When using suncc to build, the Solaris linker will mark
4986         # an executable with each instruction set encountered by
4987         # the Solaris assembler.  As our libraries contain their own
4988         # guards for processor-specific code, instead suppress
4989         # generation of the HWCAPS ELF section on Solaris x86 only.
4990         enabled_all suncc x86 &&
4991             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4992             add_ldflags -Wl,-M,mapfile
4993         nm_default='nm -P -g'
4994         version_script='-M'
4995         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4996         ;;
4997     netbsd)
4998         disable symver
4999         oss_indev_extralibs="-lossaudio"
5000         oss_outdev_extralibs="-lossaudio"
5001         enabled gcc || check_ldflags -Wl,-zmuldefs
5002         ;;
5003     openbsd|bitrig)
5004         disable symver
5005         SHFLAGS='-shared'
5006         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5007         SLIB_INSTALL_LINKS=
5008         oss_indev_extralibs="-lossaudio"
5009         oss_outdev_extralibs="-lossaudio"
5010         ;;
5011     dragonfly)
5012         disable symver
5013         ;;
5014     freebsd)
5015         ;;
5016     bsd/os)
5017         add_extralibs -lpoll -lgnugetopt
5018         strip="strip -d"
5019         ;;
5020     darwin)
5021         enabled ppc && add_asflags -force_cpusubtype_ALL
5022         install_name_dir_default='$(SHLIBDIR)'
5023         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5024         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5025         strip="${strip} -x"
5026         add_ldflags -Wl,-dynamic,-search_paths_first
5027         check_cflags -Werror=partial-availability
5028         SLIBSUF=".dylib"
5029         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5030         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5031         enabled x86_64 && objformat="macho64" || objformat="macho32"
5032         enabled_any pic shared x86_64 ||
5033             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5034         check_header dispatch/dispatch.h &&
5035             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5036         version_script='-exported_symbols_list'
5037         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5038         ;;
5039     msys*)
5040         die "Native MSYS builds are discouraged, please use the MINGW environment."
5041         ;;
5042     mingw32*|mingw64*)
5043         if test $target_os = "mingw32ce"; then
5044             disable network
5045         else
5046             target_os=mingw32
5047         fi
5048         LIBTARGET=i386
5049         if enabled x86_64; then
5050             LIBTARGET="i386:x86-64"
5051         elif enabled arm; then
5052             LIBTARGET=arm-wince
5053         fi
5054         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5055         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5056         shlibdir_default="$bindir_default"
5057         SLIBPREF=""
5058         SLIBSUF=".dll"
5059         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5060         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5061         dlltool="${cross_prefix}dlltool"
5062         if check_cmd lib.exe -list; then
5063             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5064             if enabled x86_64; then
5065                 LIBTARGET=x64
5066             fi
5067         elif check_cmd $dlltool --version; then
5068             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5069         fi
5070         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5071         SLIB_INSTALL_LINKS=
5072         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5073         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5074         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
5075         enabled x86_64 && objformat="win64" || objformat="win32"
5076         ranlib=:
5077         enable dos_paths
5078         check_ldflags -Wl,--nxcompat,--dynamicbase
5079         # Lets work around some stupidity in binutils.
5080         # ld will strip relocations from executables even though we need them
5081         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5082         # however ld then forgets what the entry point should be (oops) so we
5083         # have to manually (re)set it.
5084         if enabled x86_32; then
5085             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5086         elif enabled x86_64; then
5087             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5088             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5089             # Set image base >4GB for extra entropy with HEASLR
5090             add_ldexeflags -Wl,--image-base,0x140000000
5091             append SHFLAGS -Wl,--image-base,0x180000000
5092         fi
5093         ;;
5094     win32|win64)
5095         disable symver
5096         if enabled shared; then
5097             # Link to the import library instead of the normal static library
5098             # for shared libs.
5099             LD_LIB='%.lib'
5100             # Cannot build both shared and static libs with MSVC or icl.
5101             disable static
5102         fi
5103         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5104         shlibdir_default="$bindir_default"
5105         SLIBPREF=""
5106         SLIBSUF=".dll"
5107         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5108         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5109         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5110         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5111         SLIB_INSTALL_LINKS=
5112         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5113         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5114         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5115         enabled x86_64 && objformat="win64" || objformat="win32"
5116         ranlib=:
5117         enable dos_paths
5118         ;;
5119     cygwin*)
5120         target_os=cygwin
5121         shlibdir_default="$bindir_default"
5122         SLIBPREF="cyg"
5123         SLIBSUF=".dll"
5124         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5125         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5126         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5127         SLIB_INSTALL_LINKS=
5128         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5129         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5130         enabled x86_64 && objformat="win64" || objformat="win32"
5131         enable dos_paths
5132         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5133         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5134         ;;
5135     *-dos|freedos|opendos)
5136         network_extralibs="-lsocket"
5137         objformat="coff"
5138         enable dos_paths
5139         add_cppflags -U__STRICT_ANSI__
5140         ;;
5141     linux)
5142         enable section_data_rel_ro
5143         enabled_any arm aarch64 && enable_weak linux_perf
5144         ;;
5145     irix*)
5146         target_os=irix
5147         ranlib="echo ignoring ranlib"
5148         ;;
5149     os/2*)
5150         strip="lxlite -CS"
5151         striptype=""
5152         objformat="aout"
5153         add_cppflags -D_GNU_SOURCE
5154         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5155         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5156         LIBSUF="_s.a"
5157         SLIBPREF=""
5158         SLIBSUF=".dll"
5159         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5160         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5161         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5162             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5163             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5164             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5165             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5166         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5167             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5168         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5169         SLIB_INSTALL_LINKS=
5170         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5171         enable dos_paths
5172         enable_weak os2threads
5173         ;;
5174     gnu/kfreebsd)
5175         add_cppflags -D_BSD_SOURCE
5176         ;;
5177     gnu)
5178         ;;
5179     qnx)
5180         add_cppflags -D_QNX_SOURCE
5181         network_extralibs="-lsocket"
5182         ;;
5183     symbian)
5184         SLIBSUF=".dll"
5185         enable dos_paths
5186         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5187         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5188         add_ldflags -Wl,--target1-abs,--no-undefined \
5189                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5190                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5191         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5192                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5193                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5194         ;;
5195     osf1)
5196         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5197         ;;
5198     minix)
5199         ;;
5200     none)
5201         ;;
5202     *)
5203         die "Unknown OS '$target_os'."
5204         ;;
5205 esac
5206
5207 # test if creating links works
5208 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5209 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5210 mkdir "$link_dest"
5211 $ln_s "$link_dest" "$link_name"
5212 touch "$link_dest/test_file"
5213 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5214     # create link to source path
5215     [ -e src ] && rm src
5216     $ln_s "$source_path" src
5217     source_link=src
5218 else
5219     # creating directory links doesn't work
5220     # fall back to using the full source path
5221     source_link="$source_path"
5222 fi
5223 # cleanup
5224 rm -r "$link_dest"
5225 rm -r "$link_name"
5226
5227 # determine libc flavour
5228
5229 probe_libc(){
5230     pfx=$1
5231     pfx_no_=${pfx%_}
5232     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5233     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5234         eval ${pfx}libc_type=uclibc
5235         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5236     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5237         eval ${pfx}libc_type=glibc
5238         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5239     # MinGW headers can be installed on Cygwin, so check for newlib first.
5240     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5241         eval ${pfx}libc_type=newlib
5242         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5243     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5244     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5245         eval ${pfx}libc_type=mingw64
5246         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5247             add_compat msvcrt/snprintf.o
5248             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5249         fi
5250         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5251         eval test \$${pfx_no_}cc_type = "gcc" &&
5252             add_${pfx}cppflags -D__printf__=__gnu_printf__
5253     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5254          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5255         eval ${pfx}libc_type=mingw32
5256         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5257             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5258             die "ERROR: MinGW32 runtime version must be >= 3.15."
5259         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5260         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5261             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5262         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5263             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5264         eval test \$${pfx_no_}cc_type = "gcc" &&
5265             add_${pfx}cppflags -D__printf__=__gnu_printf__
5266     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5267         eval ${pfx}libc_type=msvcrt
5268         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5269             if [ "$pfx" = host_ ]; then
5270                 add_host_cppflags -Dsnprintf=_snprintf
5271             else
5272                 add_compat strtod.o strtod=avpriv_strtod
5273                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5274                                              _snprintf=avpriv_snprintf  \
5275                                              vsnprintf=avpriv_vsnprintf
5276             fi
5277         fi
5278         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5279         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5280         # 0x601 by default unless something else is set by the user.
5281         # This can easily lead to us detecting functions only present
5282         # in such new versions and producing binaries requiring windows 7.0.
5283         # Therefore explicitly set the default to XP unless the user has
5284         # set something else on the command line.
5285         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5286         # family. For these cases, configure is free to use any functions
5287         # found in the SDK headers by default. (Alternatively, we could force
5288         # _WIN32_WINNT to 0x0602 in that case.)
5289         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5290             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5291 #ifdef WINAPI_FAMILY
5292 #include <winapifamily.h>
5293 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5294 #error not desktop
5295 #endif
5296 #endif
5297 EOF
5298         if [ "$pfx" = "" ]; then
5299             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5300             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5301         fi
5302     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5303         eval ${pfx}libc_type=klibc
5304     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5305         eval ${pfx}libc_type=bionic
5306     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5307         eval ${pfx}libc_type=solaris
5308         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5309     fi
5310     check_${pfx}cc <<EOF
5311 #include <time.h>
5312 void *v = localtime_r;
5313 EOF
5314 test "$?" != 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
5315 #include <time.h>
5316 void *v = localtime_r;
5317 EOF
5318
5319 }
5320
5321 probe_libc
5322 test -n "$libc_type" && enable libc_$libc_type
5323 probe_libc host_
5324 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5325
5326 # hacks for compiler/libc/os combinations
5327
5328 case $libc_type in
5329     bionic)
5330         add_compat strtod.o strtod=avpriv_strtod
5331         ;;
5332     glibc)
5333         if enabled tms470; then
5334             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5335             add_cppflags -D__USER_LABEL_PREFIX__=
5336             add_cppflags -D__builtin_memset=memset
5337             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5338             add_cflags   -pds=48    # incompatible redefinition of macro
5339         elif enabled ccc; then
5340             add_ldflags -Wl,-z,now  # calls to libots crash without this
5341         fi
5342         ;;
5343 esac
5344
5345 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5346     add_cppflags '-I\$(SRC_PATH)/compat/float'
5347
5348 esc(){
5349     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5350 }
5351
5352 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5353
5354 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5355
5356 set_default libdir
5357 : ${shlibdir_default:="$libdir"}
5358 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5359
5360 set_default $PATHS_LIST
5361 set_default nm
5362
5363 # we need to build at least one lib type
5364 if ! enabled_any static shared; then
5365     cat <<EOF
5366 At least one library type must be built.
5367 Specify --enable-static to build the static libraries or --enable-shared to
5368 build the shared libraries as well. To only build the shared libraries specify
5369 --disable-static in addition to --enable-shared.
5370 EOF
5371     exit 1
5372 fi
5373
5374 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5375
5376 enable_weak_pic() {
5377     disabled pic && return
5378     enable pic
5379     add_cppflags -DPIC
5380     case "$target_os" in
5381     mingw*|cygwin*)
5382         ;;
5383     *)
5384         add_cflags -fPIC
5385         ;;
5386     esac
5387     add_asflags  -fPIC
5388 }
5389
5390 enabled pic && enable_weak_pic
5391
5392 check_cc <<EOF || die "Symbol mangling check failed."
5393 int ff_extern;
5394 EOF
5395 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5396 extern_prefix=${sym%%ff_extern*}
5397
5398 check_inline_asm inline_asm '"" ::'
5399
5400 _restrict=
5401 for restrict_keyword in restrict __restrict__ __restrict; do
5402     check_cc <<EOF && _restrict=$restrict_keyword && break
5403 void foo(char * $restrict_keyword p);
5404 EOF
5405 done
5406
5407 check_cc <<EOF && enable pragma_deprecated
5408 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5409 EOF
5410
5411 check_cc <<EOF && enable attribute_packed
5412 struct { int x; } __attribute__((packed)) x;
5413 EOF
5414
5415 check_cc <<EOF && enable attribute_may_alias
5416 union { int x; } __attribute__((may_alias)) x;
5417 EOF
5418
5419 check_cc <<EOF || die "endian test failed"
5420 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5421 EOF
5422 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5423
5424 check_cc <<EOF && enable const_nan
5425 #include <math.h>
5426 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5427 EOF
5428
5429 if ! enabled ppc64 || enabled bigendian; then
5430     disable vsx
5431 fi
5432
5433 check_gas() {
5434     log "check_gas using '$as' as AS"
5435     # :vararg is used on aarch64, arm and ppc altivec
5436     check_as <<EOF || return 1
5437 .macro m n, y:vararg=0
5438 \n: .int \y
5439 .endm
5440 m x
5441 EOF
5442     # .altmacro is only used in arm asm
5443     ! enabled arm || check_as <<EOF || return 1
5444 .altmacro
5445 EOF
5446     enable gnu_as
5447     return 0
5448 }
5449
5450 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5451     nogas=:
5452     enabled_any arm aarch64 && nogas=die
5453     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5454     as_noop=-v
5455
5456     case $as_type in
5457         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5458         gcc)  gaspp_as_type=gas ;;
5459         *)    gaspp_as_type=$as_type ;;
5460     esac
5461
5462     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5463
5464     test "${as#*gas-preprocessor.pl}" != "$as" ||
5465     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5466         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5467
5468     if ! check_gas ; then
5469         as=${gas:=$as}
5470         check_gas || \
5471             $nogas "GNU assembler not found, install/update gas-preprocessor"
5472     fi
5473
5474     check_as <<EOF && enable as_func
5475 .func test
5476 .endfunc
5477 EOF
5478 fi
5479
5480 check_inline_asm inline_asm_labels '"1:\n"'
5481
5482 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5483
5484 if enabled aarch64; then
5485     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5486     # internal assembler in clang 3.3 does not support this instruction
5487     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5488     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5489
5490     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5491
5492 elif enabled alpha; then
5493
5494     check_cflags -mieee
5495
5496 elif enabled arm; then
5497
5498     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5499
5500     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5501 float func(float a, float b){ return a+b; }
5502 EOF
5503
5504     enabled thumb && check_cflags -mthumb || check_cflags -marm
5505
5506     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5507         enable vfp_args
5508     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5509         enable vfp_args
5510     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5511         case "${cross_prefix:-$cc}" in
5512             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5513             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5514 __asm__ (".eabi_attribute 28, 1");
5515 int main(void) { return 0; }
5516 EOF
5517         esac
5518         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5519     fi
5520
5521     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5522     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5523     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5524     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5525     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5526     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5527     enabled setend  && check_insn setend  'setend be'
5528
5529     [ $target_os = linux ] || [ $target_os = android ] ||
5530         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5531             $ARCH_EXT_LIST_ARM
5532
5533     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5534
5535     check_as <<EOF && enable as_dn_directive
5536 ra .dn d0.i16
5537 .unreq ra
5538 EOF
5539     check_as <<EOF && enable as_fpu_directive
5540 .fpu neon
5541 EOF
5542
5543     # llvm's integrated assembler supports .object_arch from llvm 3.5
5544     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5545         check_as <<EOF && enable as_object_arch
5546 .object_arch armv4
5547 EOF
5548
5549     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5550
5551 elif enabled mips; then
5552
5553     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5554     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5555     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5556
5557     # Enable minimum ISA based on selected options
5558     if enabled mips64; then
5559         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5560         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5561         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5562     else
5563         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5564         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5565         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5566         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5567     fi
5568
5569     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5570     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5571     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5572     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5573     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5574
5575     if enabled bigendian && enabled msa; then
5576         disable msa
5577     fi
5578
5579 elif enabled parisc; then
5580
5581     if enabled gcc; then
5582         case $($cc -dumpversion) in
5583             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5584         esac
5585     fi
5586
5587 elif enabled ppc; then
5588
5589     enable local_aligned_8 local_aligned_16 local_aligned_32
5590
5591     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5592     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5593     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5594     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5595
5596     # AltiVec flags: The FSF version of GCC differs from the Apple version
5597     if enabled altivec; then
5598         check_cflags -maltivec -mabi=altivec &&
5599         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5600         check_cflags -faltivec
5601
5602         # check if our compiler supports Motorola AltiVec C API
5603         check_cc <<EOF || disable altivec
5604 $inc_altivec_h
5605 int main(void) {
5606     vector signed int v1 = (vector signed int) { 0 };
5607     vector signed int v2 = (vector signed int) { 1 };
5608     v1 = vec_add(v1, v2);
5609     return 0;
5610 }
5611 EOF
5612
5613         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5614     fi
5615
5616     if enabled vsx; then
5617         check_cflags -mvsx &&
5618         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5619     fi
5620
5621     if enabled power8; then
5622         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5623     fi
5624
5625 elif enabled x86; then
5626
5627     check_builtin rdtsc    intrin.h   "__rdtsc()"
5628     check_builtin mm_empty mmintrin.h "_mm_empty()"
5629
5630     enable local_aligned_8 local_aligned_16 local_aligned_32
5631
5632     # check whether EBP is available on x86
5633     # As 'i' is stored on the stack, this program will crash
5634     # if the base pointer is used to access it because the
5635     # base pointer is cleared in the inline assembly code.
5636     check_exec_crash <<EOF && enable ebp_available
5637 volatile int i=0;
5638 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5639 return i;
5640 EOF
5641
5642     # check whether EBX is available on x86
5643     check_inline_asm ebx_available '""::"b"(0)' &&
5644         check_inline_asm ebx_available '"":::"%ebx"'
5645
5646     # check whether xmm clobbers are supported
5647     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5648
5649     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5650         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5651
5652     # check whether binutils is new enough to compile SSSE3/MMXEXT
5653     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5654     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5655
5656     probe_x86asm(){
5657         x86asmexe_probe=$1
5658         if check_cmd $x86asmexe_probe -v; then
5659             x86asmexe=$x86asmexe_probe
5660             x86asm_type=nasm
5661             x86asm_debug="-g -F dwarf"
5662         elif check_cmd $x86asmexe_probe --version; then
5663             x86asmexe=$x86asmexe_probe
5664             x86asm_type=yasm
5665             x86asm_debug="-g dwarf2"
5666         fi
5667         check_x86asm "movbe ecx, [5]" && enable x86asm
5668     }
5669
5670     if ! disabled_any asm mmx x86asm; then
5671         disable x86asm
5672         for program in $x86asmexe nasm yasm; do
5673             probe_x86asm $program && break
5674         done
5675         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5676         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5677         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5678         X86ASMFLAGS="-f $objformat"
5679         enabled pic               && append X86ASMFLAGS "-DPIC"
5680         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5681         case "$objformat" in
5682             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5683         esac
5684
5685         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5686         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5687         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5688         check_x86asm "CPU amdnop" || disable cpunop
5689     fi
5690
5691     case "$cpu" in
5692         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5693             disable fast_clz
5694         ;;
5695     esac
5696
5697 fi
5698
5699 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5700
5701 check_ldflags -Wl,--as-needed
5702 check_ldflags -Wl,-z,noexecstack
5703
5704 if ! disabled network; then
5705     check_func getaddrinfo $network_extralibs
5706     check_func inet_aton $network_extralibs
5707
5708     check_type netdb.h "struct addrinfo"
5709     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5710     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5711     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5712     check_type poll.h "struct pollfd"
5713     check_type netinet/sctp.h "struct sctp_event_subscribe"
5714     check_struct "sys/socket.h" "struct msghdr" msg_flags
5715     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5716     check_type netinet/in.h "struct sockaddr_in6"
5717     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5718     check_type "sys/types.h sys/socket.h" socklen_t
5719
5720     # Prefer arpa/inet.h over winsock2
5721     if check_header arpa/inet.h ; then
5722         check_func closesocket
5723     elif check_header winsock2.h ; then
5724         check_func_headers winsock2.h closesocket -lws2 &&
5725             network_extralibs="-lws2" ||
5726         { check_func_headers winsock2.h closesocket -lws2_32 &&
5727             network_extralibs="-lws2_32"; } || disable winsock2_h network
5728         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5729
5730         check_type ws2tcpip.h socklen_t
5731         check_type ws2tcpip.h "struct addrinfo"
5732         check_type ws2tcpip.h "struct group_source_req"
5733         check_type ws2tcpip.h "struct ip_mreq_source"
5734         check_type ws2tcpip.h "struct ipv6_mreq"
5735         check_type winsock2.h "struct pollfd"
5736         check_struct winsock2.h "struct sockaddr" sa_len
5737         check_type ws2tcpip.h "struct sockaddr_in6"
5738         check_type ws2tcpip.h "struct sockaddr_storage"
5739     else
5740         disable network
5741     fi
5742 fi
5743
5744 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5745 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5746 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5747 check_builtin sarestart signal.h "SA_RESTART"
5748 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5749 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5750 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5751 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5752
5753 case "$custom_allocator" in
5754     jemalloc)
5755         # jemalloc by default does not use a prefix
5756         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5757     ;;
5758     tcmalloc)
5759         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5760         malloc_prefix=tc_
5761     ;;
5762 esac
5763
5764 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5765 check_func  ${malloc_prefix}memalign            && enable memalign
5766 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5767
5768 check_func  access
5769 check_func_headers stdlib.h arc4random
5770 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5771 check_func  fcntl
5772 check_func  fork
5773 check_func  gethrtime
5774 check_func  getopt
5775 check_func  getrusage
5776 check_func  gettimeofday
5777 check_func  isatty
5778 check_func  mach_absolute_time
5779 check_func  mkstemp
5780 check_func  mmap
5781 check_func  mprotect
5782 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5783 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5784 check_func  sched_getaffinity
5785 check_func  setrlimit
5786 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5787 check_func  strerror_r
5788 check_func  sysconf
5789 check_func  sysctl
5790 check_func  usleep
5791
5792 check_func_headers conio.h kbhit
5793 check_func_headers io.h setmode
5794 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5795 check_func_headers stdlib.h getenv
5796 check_func_headers sys/stat.h lstat
5797
5798 check_func_headers windows.h GetProcessAffinityMask
5799 check_func_headers windows.h GetProcessTimes
5800 check_func_headers windows.h GetSystemTimeAsFileTime
5801 check_func_headers windows.h LoadLibrary
5802 check_func_headers windows.h MapViewOfFile
5803 check_func_headers windows.h PeekNamedPipe
5804 check_func_headers windows.h SetConsoleTextAttribute
5805 check_func_headers windows.h SetConsoleCtrlHandler
5806 check_func_headers windows.h Sleep
5807 check_func_headers windows.h VirtualAlloc
5808 check_struct windows.h "CONDITION_VARIABLE" Ptr
5809 check_func_headers glob.h glob
5810 enabled xlib &&
5811     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5812
5813 check_header d3d11.h
5814 check_header direct.h
5815 check_header dirent.h
5816 check_header dlfcn.h
5817 check_header dxgidebug.h
5818 check_header dxva.h
5819 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5820 check_header io.h
5821 check_header libcrystalhd/libcrystalhd_if.h
5822 check_header mach/mach_time.h
5823 check_header malloc.h
5824 check_header net/udplite.h
5825 check_header poll.h
5826 check_header sys/mman.h
5827 check_header sys/param.h
5828 check_header sys/resource.h
5829 check_header sys/select.h
5830 check_header sys/time.h
5831 check_header sys/un.h
5832 check_header termios.h
5833 check_header unistd.h
5834 check_header valgrind/valgrind.h
5835 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5836 check_header windows.h
5837 check_header X11/extensions/XvMClib.h
5838 check_header asm/types.h
5839
5840 # it seems there are versions of clang in some distros that try to use the
5841 # gcc headers, which explodes for stdatomic
5842 # so we also check that atomics actually work here
5843 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5844
5845 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5846 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5847 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5848 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5849
5850 enabled appkit       && check_apple_framework AppKit
5851 enabled audiotoolbox && check_apple_framework AudioToolbox
5852 enabled avfoundation && check_apple_framework AVFoundation
5853 enabled coreimage    && check_apple_framework CoreImage
5854 enabled videotoolbox && check_apple_framework VideoToolbox
5855
5856 check_apple_framework CoreFoundation
5857 check_apple_framework CoreMedia
5858 check_apple_framework CoreVideo
5859
5860 enabled avfoundation && {
5861     disable coregraphics applicationservices
5862     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5863     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5864
5865 enabled videotoolbox && {
5866     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5867     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5868 }
5869
5870 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5871
5872 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5873 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5874 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5875 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5876 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5877
5878 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5879 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5880 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5881 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5882 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5883 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5884 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5885 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5886 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5887
5888 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5889
5890 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5891
5892 if ! disabled w32threads && ! enabled pthreads; then
5893     check_func_headers "windows.h process.h" _beginthreadex &&
5894         enable w32threads || disable w32threads
5895     if ! enabled w32threads && enabled winrt; then
5896         check_func_headers "windows.h" CreateThread &&
5897             enable w32threads || disable w32threads
5898     fi
5899 fi
5900
5901 # check for some common methods of building with pthread support
5902 # do this before the optional library checks as some of them require pthreads
5903 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5904     if check_lib pthreads pthread.h pthread_join   -pthread &&
5905        check_lib pthreads pthread.h pthread_create -pthread; then
5906         add_cflags -pthread
5907     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5908          check_lib pthreads pthread.h pthread_create -pthreads; then
5909         add_cflags -pthreads
5910     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5911          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5912         add_cflags -ldl -pthread
5913     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5914          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5915         :
5916     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5917          check_lib pthreads pthread.h pthread_create -lpthread; then
5918         :
5919     elif check_func pthread_join && check_func pthread_create; then
5920         enable pthreads
5921     fi
5922     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5923 fi
5924
5925
5926 if enabled pthreads; then
5927   check_func pthread_cancel $pthreads_extralibs
5928 fi
5929
5930 enabled pthreads &&
5931     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5932
5933 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5934 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5935 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5936
5937 # On some systems dynamic loading requires no extra linker flags
5938 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5939
5940 check_lib libm math.h sin -lm
5941
5942 atan2f_args=2
5943 copysign_args=2
5944 hypot_args=2
5945 ldexpf_args=2
5946 powf_args=2
5947
5948 for func in $MATH_FUNCS; do
5949     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5950 done
5951
5952 for func in $COMPLEX_FUNCS; do
5953     eval check_complexfunc $func \${${func}_args:-1}
5954 done
5955
5956 # these are off by default, so fail if requested and not available
5957 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5958 enabled cuvid             && { enabled cuda ||
5959                                die "ERROR: CUVID requires CUDA"; }
5960 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5961 enabled decklink          && { require_header DeckLinkAPI.h &&
5962                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5963 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5964 enabled frei0r            && require_header frei0r.h
5965 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5966 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5967 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5968 enabled ladspa            && require_header ladspa.h
5969 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5970 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5971 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5972 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5973 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5974                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5975                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5976 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5977 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5978 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5979 enabled libfdk_aac        && { use_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5980                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5981                                  warn "using libfdk without pkg-config"; } }
5982 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"
5983 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5984 enabled fontconfig        && enable libfontconfig
5985 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5986 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5987 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5988 enabled libgme            && { use_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5989                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5990 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5991                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5992                                done || die "ERROR: libgsm not found"; }
5993 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5994 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5995 # While it may appear that require is being used as a pkg-config
5996 # fallback for libmfx, it is actually being used to detect a different
5997 # installation route altogether.  If libmfx is installed via the Intel
5998 # Media SDK or Intel Media Server Studio, these don't come with
5999 # pkg-config support.  Instead, users should make sure that the build
6000 # can find the libraries and headers through other means.
6001 enabled libmfx            && { use_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6002                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
6003 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6004 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
6005 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
6006 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
6007                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
6008                                die "ERROR: libnpp not found"; }
6009 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6010 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6011 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6012                                { use_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6013                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6014                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6015 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6016 enabled libopenjpeg       && { use_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6017                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6018 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6019 enabled libopus           && {
6020     enabled libopus_decoder && {
6021         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6022     }
6023     enabled libopus_encoder && {
6024         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6025     }
6026 }
6027 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6028 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6029 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6030 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6031 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6032 enabled libsmbclient      && { use_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6033                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6034 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6035 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6036 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6037 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
6038 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6039 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6040 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6041                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6042                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6043 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6044 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6045 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
6046 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6047 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6048                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6049
6050 enabled libvpx            && {
6051     enabled libvpx_vp8_decoder && {
6052         use_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6053             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
6054                 die "ERROR: libvpx decoder version must be >=0.9.1";
6055     }
6056     enabled libvpx_vp8_encoder && {
6057         use_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6058             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
6059                 die "ERROR: libvpx encoder version must be >=0.9.7";
6060     }
6061     enabled libvpx_vp9_decoder && {
6062         use_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6063             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
6064     }
6065     enabled libvpx_vp9_encoder && {
6066         use_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6067             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6068     }
6069     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6070         die "libvpx enabled but no supported decoders found"
6071     fi
6072 }
6073
6074 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6075 enabled libwebp           && {
6076     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6077     enabled libwebp_anim_encoder && use_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6078 enabled libx264           && { use_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6079                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6080                                  warn "using libx264 without pkg-config"; } } &&
6081                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6082                              { check_cpp_condition x264.h "X264_MPEG2" &&
6083                                enable libx262; }
6084 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6085                              require_cpp_condition x265.h "X265_BUILD >= 68"
6086 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6087 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6088 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
6089 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6090 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6091                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6092                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6093 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6094 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6095 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6096                                { ! enabled cross_compile &&
6097                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6098                                  add_ldflags -L/opt/vc/lib/ &&
6099                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6100                                die "ERROR: mmal not found" &&
6101                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6102 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6103                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6104                                die "ERROR: openal not found"; } &&
6105                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6106                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6107 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6108                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6109                                die "ERROR: opencl not found"; } &&
6110                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6111                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6112                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6113 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6114                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6115                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6116                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6117                                die "ERROR: opengl not found."
6118                              }
6119 enabled omx               && require_header OMX_Core.h
6120 enabled omx_rpi           && { check_header OMX_Core.h ||
6121                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6122                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6123 enabled openssl           && { use_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6124                                use_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6125                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6126                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6127                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6128                                die "ERROR: openssl not found"; }
6129 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
6130                                  die "ERROR : Rockchip MPP was not found."; } &&
6131                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
6132                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
6133                                { enabled libdrm ||
6134                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6135                              }
6136
6137 if enabled gcrypt; then
6138     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6139     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6140         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6141         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6142         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6143             die "ERROR: gcrypt not found"
6144         add_cflags $gcrypt_cflags
6145     else
6146         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6147     fi
6148 fi
6149
6150 if enabled sdl2; then
6151     SDL2_CONFIG="${cross_prefix}sdl2-config"
6152     if check_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6153         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6154             disable sdl2
6155     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6156         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6157         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6158         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6159         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6160         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6161             enable sdl2
6162     fi
6163     if test $target_os = "mingw32"; then
6164         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6165     fi
6166 fi
6167
6168 if enabled decklink; then
6169     case $target_os in
6170         mingw32*|mingw64*|win32|win64)
6171             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6172             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6173             ;;
6174     esac
6175 fi
6176
6177 enabled securetransport &&
6178     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6179     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6180         disable securetransport
6181
6182 enabled schannel &&
6183     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6184     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6185     schannel_extralibs="-lsecur32" ||
6186         disable schannel
6187
6188 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6189 enabled makeinfo \
6190     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6191     && enable makeinfo_html || disable makeinfo_html
6192 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6193 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6194 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6195 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6196
6197 # check V4L2 codecs available in the API
6198 check_header linux/fb.h
6199 check_header linux/videodev2.h
6200 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6201 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6202 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6203 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6204 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6205 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6206 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6207 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6208 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6209 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6210 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6211
6212 check_header sys/videoio.h
6213 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6214
6215 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6216 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6217 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6218 # w32api 3.12 had it defined wrong
6219 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6220
6221 check_type "dshow.h" IBaseFilter
6222
6223 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6224 { check_header dev/bktr/ioctl_meteor.h &&
6225   check_header dev/bktr/ioctl_bt848.h; } ||
6226 { check_header machine/ioctl_meteor.h &&
6227   check_header machine/ioctl_bt848.h; } ||
6228 { check_header dev/video/meteor/ioctl_meteor.h &&
6229   check_header dev/video/bktr/ioctl_bt848.h; } ||
6230 check_header dev/ic/bt8xx.h
6231
6232 if check_struct sys/soundcard.h audio_buf_info bytes; then
6233     enable_safe sys/soundcard.h
6234 else
6235     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6236     #include <sys/soundcard.h>
6237     audio_buf_info abc;
6238 EOF
6239 fi
6240 check_header soundcard.h
6241
6242 enabled alsa && use_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6243     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6244
6245 if enabled libjack; then
6246     check_pkg_config libjack jack jack/jack.h jack_port_get_latency_range ||
6247     require_pkg_config libjack jack jack/jack.h jack_client_open
6248 fi
6249
6250 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6251
6252 if enabled libcdio; then
6253     use_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6254     use_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6255     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6256     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6257     die "ERROR: No usable libcdio/cdparanoia found"
6258 fi
6259
6260 enabled libxcb && use_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6261     disable libxcb_shm libxcb_shape libxcb_xfixes
6262
6263 if enabled libxcb; then
6264     enabled libxcb_shm    && use_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6265     enabled libxcb_shape  && use_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6266     enabled libxcb_xfixes && use_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6267 fi
6268
6269 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6270
6271 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6272 # the desktop api partition
6273 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6274 #ifdef WINAPI_FAMILY
6275 #include <winapifamily.h>
6276 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6277 #error desktop, not uwp
6278 #else
6279 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6280 #endif
6281 #else
6282 #error no family set
6283 #endif
6284 EOF
6285
6286 enabled vaapi &&
6287     check_lib vaapi va/va.h vaInitialize -lva
6288
6289 enabled vaapi &&
6290     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6291     disable vaapi
6292
6293 enabled vaapi &&
6294     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6295
6296 enabled vaapi &&
6297     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6298
6299 enabled vaapi &&
6300     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6301     enable vaapi_1
6302
6303 enabled vdpau &&
6304     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6305     disable vdpau
6306
6307 enabled vdpau &&
6308     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6309
6310 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6311
6312 if enabled x86; then
6313     case $target_os in
6314         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6315             ;;
6316         *)
6317             disable cuda cuvid nvenc
6318             ;;
6319     esac
6320 else
6321     disable cuda cuvid nvenc
6322 fi
6323
6324 enabled nvenc &&
6325     check_cc -I$source_path <<EOF || disable nvenc
6326 #include "compat/nvenc/nvEncodeAPI.h"
6327 NV_ENCODE_API_FUNCTION_LIST flist;
6328 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6329 int main(void) { return 0; }
6330 EOF
6331
6332 # Funny iconv installations are not unusual, so check it after all flags have been set
6333 if enabled libc_iconv; then
6334     check_func_headers iconv.h iconv
6335 elif enabled iconv; then
6336     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6337 fi
6338
6339 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6340
6341 # add some useful compiler flags if supported
6342 check_cflags -Wdeclaration-after-statement
6343 check_cflags -Wall
6344 check_cflags -Wdisabled-optimization
6345 check_cflags -Wpointer-arith
6346 check_cflags -Wredundant-decls
6347 check_cflags -Wwrite-strings
6348 check_cflags -Wtype-limits
6349 check_cflags -Wundef
6350 check_cflags -Wmissing-prototypes
6351 check_cflags -Wno-pointer-to-int-cast
6352 check_cflags -Wstrict-prototypes
6353 check_cflags -Wempty-body
6354
6355 if enabled extra_warnings; then
6356     check_cflags -Wcast-qual
6357     check_cflags -Wextra
6358     check_cflags -Wpedantic
6359 fi
6360
6361 check_disable_warning(){
6362     warning_flag=-W${1#-Wno-}
6363     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6364 }
6365
6366 test_cflags -Werror=unused-command-line-argument &&
6367     append unknown_warning_flags "-Werror=unused-command-line-argument"
6368 test_cflags -Werror=unknown-warning-option &&
6369     append unknown_warning_flags "-Werror=unknown-warning-option"
6370
6371 check_disable_warning -Wno-parentheses
6372 check_disable_warning -Wno-switch
6373 check_disable_warning -Wno-format-zero-length
6374 check_disable_warning -Wno-pointer-sign
6375 check_disable_warning -Wno-unused-const-variable
6376 check_disable_warning -Wno-bool-operation
6377
6378 check_disable_warning_headers(){
6379     warning_flag=-W${1#-Wno-}
6380     test_cflags $warning_flag && add_cflags_headers $1
6381 }
6382
6383 check_disable_warning_headers -Wno-deprecated-declarations
6384 check_disable_warning_headers -Wno-unused-variable
6385
6386 check_cc <<EOF && enable blocks_extension
6387 void (^block)(void);
6388 EOF
6389
6390 # add some linker flags
6391 check_ldflags -Wl,--warn-common
6392 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6393 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6394 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6395 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6396
6397 # add some strip flags
6398 check_stripflags -x
6399
6400 enabled neon_clobber_test &&
6401     check_ldflags -Wl,--wrap,avcodec_open2              \
6402                   -Wl,--wrap,avcodec_decode_audio4      \
6403                   -Wl,--wrap,avcodec_decode_video2      \
6404                   -Wl,--wrap,avcodec_decode_subtitle2   \
6405                   -Wl,--wrap,avcodec_encode_audio2      \
6406                   -Wl,--wrap,avcodec_encode_video2      \
6407                   -Wl,--wrap,avcodec_encode_subtitle    \
6408                   -Wl,--wrap,avcodec_send_packet        \
6409                   -Wl,--wrap,avcodec_receive_packet     \
6410                   -Wl,--wrap,avcodec_send_frame         \
6411                   -Wl,--wrap,avcodec_receive_frame      \
6412                   -Wl,--wrap,swr_convert                \
6413                   -Wl,--wrap,avresample_convert ||
6414     disable neon_clobber_test
6415
6416 enabled xmm_clobber_test &&
6417     check_ldflags -Wl,--wrap,avcodec_open2              \
6418                   -Wl,--wrap,avcodec_decode_audio4      \
6419                   -Wl,--wrap,avcodec_decode_video2      \
6420                   -Wl,--wrap,avcodec_decode_subtitle2   \
6421                   -Wl,--wrap,avcodec_encode_audio2      \
6422                   -Wl,--wrap,avcodec_encode_video2      \
6423                   -Wl,--wrap,avcodec_encode_subtitle    \
6424                   -Wl,--wrap,avcodec_send_packet        \
6425                   -Wl,--wrap,avcodec_receive_packet     \
6426                   -Wl,--wrap,avcodec_send_frame         \
6427                   -Wl,--wrap,avcodec_receive_frame      \
6428                   -Wl,--wrap,swr_convert                \
6429                   -Wl,--wrap,avresample_convert         \
6430                   -Wl,--wrap,sws_scale ||
6431     disable xmm_clobber_test
6432
6433 check_ld "cc" <<EOF && enable proper_dce
6434 extern const int array[512];
6435 static inline int func(void) { return array[0]; }
6436 int main(void) { return 0; }
6437 EOF
6438
6439 if enabled proper_dce; then
6440     echo "X { local: *; };" > $TMPV
6441     if test_ldflags -Wl,${version_script},$TMPV; then
6442         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6443         check_cc <<EOF && enable symver_asm_label
6444 void ff_foo(void) __asm__ ("av_foo@VERSION");
6445 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6446 EOF
6447         check_cc <<EOF && enable symver_gnu_asm
6448 __asm__(".symver ff_foo,av_foo@VERSION");
6449 void ff_foo(void) {}
6450 EOF
6451     fi
6452 fi
6453
6454 if [ -z "$optflags" ]; then
6455     if enabled small; then
6456         optflags=$cflags_size
6457     elif enabled optimizations; then
6458         optflags=$cflags_speed
6459     else
6460         optflags=$cflags_noopt
6461     fi
6462 fi
6463
6464 if [ -z "$nvccflags" ]; then
6465     nvccflags=$nvccflags_default
6466 fi
6467
6468 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6469     nvccflags="$nvccflags -m64"
6470 else
6471     nvccflags="$nvccflags -m32"
6472 fi
6473
6474 check_optflags(){
6475     check_cflags "$@"
6476     enabled lto && check_ldflags "$@"
6477 }
6478
6479 check_optflags $optflags
6480 check_optflags -fno-math-errno
6481 check_optflags -fno-signed-zeros
6482
6483 if enabled lto; then
6484     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6485     check_cflags  -flto
6486     check_ldflags -flto $cpuflags
6487     disable inline_asm_direct_symbol_refs
6488 fi
6489
6490 enabled ftrapv && check_cflags -ftrapv
6491
6492 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6493 int x;
6494 EOF
6495
6496
6497 if enabled icc; then
6498     # Just warnings, no remarks
6499     check_cflags -w1
6500     # -wd: Disable following warnings
6501     # 144, 167, 556: -Wno-pointer-sign
6502     # 188: enumerated type mixed with another type
6503     # 1292: attribute "foo" ignored
6504     # 1419: external declaration in primary source file
6505     # 10006: ignoring unknown option -fno-signed-zeros
6506     # 10148: ignoring unknown option -Wno-parentheses
6507     # 10156: ignoring option '-W'; no argument required
6508     # 13200: No EMMS instruction before call to function
6509     # 13203: No EMMS instruction before return from function
6510     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6511     # 11030: Warning unknown option --as-needed
6512     # 10156: ignoring option '-export'; no argument required
6513     check_ldflags -wd10156,11030
6514     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6515     enable ebp_available
6516     # The test above does not test linking
6517     enabled lto && disable symver_asm_label
6518     if enabled x86_32; then
6519         icc_version=$($cc -dumpversion)
6520         test ${icc_version%%.*} -ge 11 &&
6521             check_cflags -falign-stack=maintain-16-byte ||
6522             disable aligned_stack
6523     fi
6524 elif enabled ccc; then
6525     # disable some annoying warnings
6526     add_cflags -msg_disable bitnotint
6527     add_cflags -msg_disable mixfuncvoid
6528     add_cflags -msg_disable nonstandcast
6529     add_cflags -msg_disable unsupieee
6530 elif enabled gcc; then
6531     check_optflags -fno-tree-vectorize
6532     check_cflags -Werror=format-security
6533     check_cflags -Werror=implicit-function-declaration
6534     check_cflags -Werror=missing-prototypes
6535     check_cflags -Werror=return-type
6536     check_cflags -Werror=vla
6537     check_cflags -Wformat
6538     check_cflags -fdiagnostics-color=auto
6539     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6540 elif enabled llvm_gcc; then
6541     check_cflags -mllvm -stack-alignment=16
6542 elif enabled clang; then
6543     check_cflags -mllvm -stack-alignment=16
6544     check_cflags -mstack-alignment=16
6545     check_cflags -Qunused-arguments
6546     check_cflags -Werror=implicit-function-declaration
6547     check_cflags -Werror=missing-prototypes
6548     check_cflags -Werror=return-type
6549 elif enabled cparser; then
6550     add_cflags -Wno-missing-variable-declarations
6551     add_cflags -Wno-empty-statement
6552 elif enabled armcc; then
6553     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6554     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6555     # 2523: use of inline assembly is deprecated
6556     add_cflags -W${armcc_opt},--diag_suppress=2523
6557     add_cflags -W${armcc_opt},--diag_suppress=1207
6558     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6559     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6560     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6561     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6562 elif enabled tms470; then
6563     add_cflags -pds=824 -pds=837
6564     disable inline_asm
6565 elif enabled pathscale; then
6566     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6567 elif enabled_any msvc icl; then
6568     enabled x86_32 && disable aligned_stack
6569     enabled_all x86_32 debug && add_cflags -Oy-
6570     enabled debug && add_ldflags -debug
6571     enable pragma_deprecated
6572     if enabled icl; then
6573         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6574         # (correctly) on icl 13.x.
6575         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6576             add_cflags -Qansi-alias
6577         # Some inline asm is not compilable in debug
6578         if enabled debug; then
6579             disable ebp_available
6580             disable ebx_available
6581         fi
6582     fi
6583     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6584     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6585     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6586     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6587     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6588     # MSVC 2013 and newer can handle it fine.
6589     # If this declspec fails, force including stdlib.h before the restrict redefinition
6590     # happens in config.h.
6591     if [ $_restrict != restrict ]; then
6592         check_cc <<EOF || add_cflags -FIstdlib.h
6593 __declspec($_restrict) void* foo(int);
6594 EOF
6595     fi
6596     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6597     # Issue has been fixed in MSVC v19.00.24218.
6598     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6599         check_cflags -d2SSAOptimizer-
6600     # enable utf-8 source processing on VS2015 U2 and newer
6601     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6602         add_cflags -utf-8
6603 fi
6604
6605 for pfx in "" host_; do
6606     varname=${pfx%_}cc_type
6607     eval "type=\$$varname"
6608     if [ "$type" = "msvc" ]; then
6609         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6610 static inline int foo(int a) { return a; }
6611 EOF
6612     fi
6613 done
6614
6615 case $as_type in
6616     clang)
6617         add_asflags -Qunused-arguments
6618     ;;
6619 esac
6620
6621 case $ld_type in
6622     clang)
6623         check_ldflags -Qunused-arguments
6624     ;;
6625 esac
6626
6627 case $target_os in
6628     osf1)
6629         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6630     ;;
6631 esac
6632
6633 enable frame_thread_encoder
6634
6635 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6636
6637 check_deps $CONFIG_LIST       \
6638            $CONFIG_EXTRA      \
6639            $HAVE_LIST         \
6640            $ALL_COMPONENTS    \
6641
6642 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"
6643
6644
6645 if test $target_os = "haiku"; then
6646     disable memalign
6647     disable posix_memalign
6648 fi
6649
6650 flatten_extralibs(){
6651     unset nested_entries
6652     list_name=$1
6653     eval list=\$${1}
6654     for entry in $list; do
6655         entry_copy=$entry
6656         resolve entry_copy
6657         append nested_entries $(filter '*_extralibs' $entry_copy)
6658         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6659         eval $entry="\$flat_entries"
6660     done
6661     append $list_name "$nested_entries"
6662
6663     resolve nested_entries
6664     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6665         flatten_extralibs $list_name
6666     fi
6667 }
6668
6669 for linkunit in $LIBRARY_LIST; do
6670     unset current_extralibs
6671     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6672     for comp in ${components}; do
6673         enabled $comp || continue
6674         comp_extralibs="${comp}_extralibs"
6675         append current_extralibs $comp_extralibs
6676     done
6677     eval prepend ${linkunit}_extralibs $current_extralibs
6678 done
6679
6680 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6681     flatten_extralibs ${linkunit}_extralibs
6682     unique  ${linkunit}_extralibs
6683     resolve ${linkunit}_extralibs
6684     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
6685 done
6686
6687 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6688
6689 for thread in $THREADS_LIST; do
6690     if enabled $thread; then
6691         test -n "$thread_type" &&
6692             die "ERROR: Only one thread type must be selected." ||
6693             thread_type="$thread"
6694     fi
6695 done
6696
6697 if disabled stdatomic_h; then
6698     if enabled atomics_gcc; then
6699         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6700     elif enabled atomics_win32; then
6701         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6702     elif enabled atomics_suncc; then
6703         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6704     elif enabled pthreads; then
6705         add_compat atomics/pthread/stdatomic.o
6706         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6707     else
6708         enabled threads && die "Threading is enabled, but no atomics are available"
6709         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6710     fi
6711 fi
6712
6713 # Check if requested libraries were found.
6714 for lib in $AUTODETECT_LIBS; do
6715     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6716 done
6717
6718 enabled zlib && add_cppflags -DZLIB_CONST
6719
6720 # conditional library dependencies, in linking order
6721 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6722 enabled afir_filter         && prepend avfilter_deps "avcodec"
6723 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6724 enabled aresample_filter    && prepend avfilter_deps "swresample"
6725 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6726 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6727 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6728 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6729 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6730 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6731 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6732 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6733 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6734 enabled pan_filter          && prepend avfilter_deps "swresample"
6735 enabled pp_filter           && prepend avfilter_deps "postproc"
6736 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6737 enabled resample_filter && prepend avfilter_deps "avresample"
6738 enabled sab_filter          && prepend avfilter_deps "swscale"
6739 enabled scale_filter    && prepend avfilter_deps "swscale"
6740 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6741 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6742 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6743 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6744 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6745 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6746 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6747 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6748 enabled spp_filter          && prepend avfilter_deps "avcodec"
6749 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6750 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6751 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6752
6753 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6754
6755 #FIXME
6756 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6757
6758 enabled opus_decoder    && prepend avcodec_deps "swresample"
6759
6760 expand_deps(){
6761     lib_deps=${1}_deps
6762     eval "deps=\$$lib_deps"
6763     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6764     unique $lib_deps
6765 }
6766
6767 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6768 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6769
6770 map 'expand_deps $v' $LIBRARY_LIST
6771
6772 license="LGPL version 2.1 or later"
6773 if enabled nonfree; then
6774     license="nonfree and unredistributable"
6775 elif enabled gplv3; then
6776     license="GPL version 3 or later"
6777 elif enabled lgplv3; then
6778     license="LGPL version 3 or later"
6779 elif enabled gpl; then
6780     license="GPL version 2 or later"
6781 fi
6782
6783 if test "$quiet" != "yes"; then
6784
6785 echo "install prefix            $prefix"
6786 echo "source path               $source_path"
6787 echo "C compiler                $cc"
6788 echo "C library                 $libc_type"
6789 if test "$host_cc" != "$cc"; then
6790     echo "host C compiler           $host_cc"
6791     echo "host C library            $host_libc_type"
6792 fi
6793 echo "ARCH                      $arch ($cpu)"
6794 if test "$build_suffix" != ""; then
6795     echo "build suffix              $build_suffix"
6796 fi
6797 if test "$progs_suffix" != ""; then
6798     echo "progs suffix              $progs_suffix"
6799 fi
6800 if test "$extra_version" != ""; then
6801     echo "version string suffix     $extra_version"
6802 fi
6803 echo "big-endian                ${bigendian-no}"
6804 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6805 if enabled x86; then
6806     echo "standalone assembly       ${x86asm-no}"
6807     echo "x86 assembler             ${x86asmexe}"
6808     echo "MMX enabled               ${mmx-no}"
6809     echo "MMXEXT enabled            ${mmxext-no}"
6810     echo "3DNow! enabled            ${amd3dnow-no}"
6811     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6812     echo "SSE enabled               ${sse-no}"
6813     echo "SSSE3 enabled             ${ssse3-no}"
6814     echo "AESNI enabled             ${aesni-no}"
6815     echo "AVX enabled               ${avx-no}"
6816     echo "AVX2 enabled              ${avx2-no}"
6817     echo "XOP enabled               ${xop-no}"
6818     echo "FMA3 enabled              ${fma3-no}"
6819     echo "FMA4 enabled              ${fma4-no}"
6820     echo "i686 features enabled     ${i686-no}"
6821     echo "CMOV is fast              ${fast_cmov-no}"
6822     echo "EBX available             ${ebx_available-no}"
6823     echo "EBP available             ${ebp_available-no}"
6824 fi
6825 if enabled aarch64; then
6826     echo "NEON enabled              ${neon-no}"
6827     echo "VFP enabled               ${vfp-no}"
6828 fi
6829 if enabled arm; then
6830     echo "ARMv5TE enabled           ${armv5te-no}"
6831     echo "ARMv6 enabled             ${armv6-no}"
6832     echo "ARMv6T2 enabled           ${armv6t2-no}"
6833     echo "VFP enabled               ${vfp-no}"
6834     echo "NEON enabled              ${neon-no}"
6835     echo "THUMB enabled             ${thumb-no}"
6836 fi
6837 if enabled mips; then
6838     echo "MIPS FPU enabled          ${mipsfpu-no}"
6839     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6840     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6841     echo "MIPS MSA enabled          ${msa-no}"
6842     echo "LOONGSON MMI enabled      ${mmi-no}"
6843 fi
6844 if enabled ppc; then
6845     echo "AltiVec enabled           ${altivec-no}"
6846     echo "VSX enabled               ${vsx-no}"
6847     echo "POWER8 enabled            ${power8-no}"
6848     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6849     echo "dcbzl available           ${dcbzl-no}"
6850 fi
6851 echo "debug symbols             ${debug-no}"
6852 echo "strip symbols             ${stripping-no}"
6853 echo "optimize for size         ${small-no}"
6854 echo "optimizations             ${optimizations-no}"
6855 echo "static                    ${static-no}"
6856 echo "shared                    ${shared-no}"
6857 echo "postprocessing support    ${postproc-no}"
6858 echo "network support           ${network-no}"
6859 echo "threading support         ${thread_type-no}"
6860 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6861 echo "texi2html enabled         ${texi2html-no}"
6862 echo "perl enabled              ${perl-no}"
6863 echo "pod2man enabled           ${pod2man-no}"
6864 echo "makeinfo enabled          ${makeinfo-no}"
6865 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6866 test -n "$random_seed" &&
6867     echo "random seed               ${random_seed}"
6868 echo
6869
6870 echo "External libraries:"
6871 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6872 echo
6873
6874 echo "External libraries providing hardware acceleration:"
6875 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6876 echo
6877
6878 echo "Libraries:"
6879 print_enabled '' $LIBRARY_LIST | print_in_columns
6880 echo
6881
6882 echo "Programs:"
6883 print_enabled '' $PROGRAM_LIST | print_in_columns
6884 echo
6885
6886 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6887     echo "Enabled ${type}s:"
6888     eval list=\$$(toupper $type)_LIST
6889     print_enabled '_*' $list | print_in_columns
6890     echo
6891 done
6892
6893 if test -n "$ignore_tests"; then
6894     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6895     echo "Ignored FATE tests:"
6896     echo $ignore_tests | print_in_columns
6897     echo
6898 fi
6899
6900 echo "License: $license"
6901
6902 echo "Creating configuration files ..."
6903
6904 fi # test "$quiet" != "yes"
6905
6906 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6907
6908 enabled stripping || strip="echo skipping strip"
6909 enabled stripping || striptype=""
6910
6911 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6912
6913 cat > ffbuild/config.mak <<EOF
6914 # Automatically generated by configure - do not modify!
6915 ifndef FFMPEG_CONFIG_MAK
6916 FFMPEG_CONFIG_MAK=1
6917 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6918 prefix=$prefix
6919 LIBDIR=\$(DESTDIR)$libdir
6920 SHLIBDIR=\$(DESTDIR)$shlibdir
6921 INCDIR=\$(DESTDIR)$incdir
6922 BINDIR=\$(DESTDIR)$bindir
6923 DATADIR=\$(DESTDIR)$datadir
6924 DOCDIR=\$(DESTDIR)$docdir
6925 MANDIR=\$(DESTDIR)$mandir
6926 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6927 INSTALL_NAME_DIR=$install_name_dir
6928 SRC_PATH=$source_path
6929 SRC_LINK=$source_link
6930 ifndef MAIN_MAKEFILE
6931 SRC_PATH:=\$(SRC_PATH:.%=..%)
6932 endif
6933 CC_IDENT=$cc_ident
6934 ARCH=$arch
6935 INTRINSICS=$intrinsics
6936 CC=$cc
6937 CXX=$cxx
6938 AS=$as
6939 OBJCC=$objcc
6940 LD=$ld
6941 DEPCC=$dep_cc
6942 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6943 DEPAS=$as
6944 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6945 X86ASM=$x86asmexe
6946 DEPX86ASM=$x86asmexe
6947 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6948 AR=$ar
6949 ARFLAGS=$arflags
6950 AR_O=$ar_o
6951 RANLIB=$ranlib
6952 STRIP=$strip
6953 STRIPTYPE=$striptype
6954 NVCC=$nvcc
6955 CP=cp -p
6956 LN_S=$ln_s
6957 CPPFLAGS=$CPPFLAGS
6958 CFLAGS=$CFLAGS
6959 CXXFLAGS=$CXXFLAGS
6960 OBJCFLAGS=$OBJCFLAGS
6961 ASFLAGS=$ASFLAGS
6962 NVCCFLAGS=$nvccflags
6963 AS_C=$AS_C
6964 AS_O=$AS_O
6965 OBJCC_C=$OBJCC_C
6966 OBJCC_E=$OBJCC_E
6967 OBJCC_O=$OBJCC_O
6968 CC_C=$CC_C
6969 CC_E=$CC_E
6970 CC_O=$CC_O
6971 CXX_C=$CXX_C
6972 CXX_O=$CXX_O
6973 NVCC_C=$NVCC_C
6974 NVCC_O=$NVCC_O
6975 LD_O=$LD_O
6976 X86ASM_O=$X86ASM_O
6977 LD_LIB=$LD_LIB
6978 LD_PATH=$LD_PATH
6979 DLLTOOL=$dlltool
6980 WINDRES=$windres
6981 DEPWINDRES=$dep_cc
6982 DOXYGEN=$doxygen
6983 LDFLAGS=$LDFLAGS
6984 LDEXEFLAGS=$LDEXEFLAGS
6985 LDLIBFLAGS=$LDLIBFLAGS
6986 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6987 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6988 X86ASMFLAGS=$X86ASMFLAGS
6989 BUILDSUF=$build_suffix
6990 PROGSSUF=$progs_suffix
6991 FULLNAME=$FULLNAME
6992 LIBPREF=$LIBPREF
6993 LIBSUF=$LIBSUF
6994 LIBNAME=$LIBNAME
6995 SLIBPREF=$SLIBPREF
6996 SLIBSUF=$SLIBSUF
6997 EXESUF=$EXESUF
6998 EXTRA_VERSION=$extra_version
6999 CCDEP=$CCDEP
7000 CXXDEP=$CXXDEP
7001 CCDEP_FLAGS=$CCDEP_FLAGS
7002 ASDEP=$ASDEP
7003 ASDEP_FLAGS=$ASDEP_FLAGS
7004 X86ASMDEP=$X86ASMDEP
7005 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7006 CC_DEPFLAGS=$CC_DEPFLAGS
7007 AS_DEPFLAGS=$AS_DEPFLAGS
7008 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7009 HOSTCC=$host_cc
7010 HOSTLD=$host_ld
7011 HOSTCFLAGS=$host_cflags
7012 HOSTCPPFLAGS=$host_cppflags
7013 HOSTEXESUF=$HOSTEXESUF
7014 HOSTLDFLAGS=$host_ldflags
7015 HOSTEXTRALIBS=$host_extralibs
7016 DEPHOSTCC=$host_cc
7017 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7018 HOSTCCDEP=$HOSTCCDEP
7019 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7020 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7021 HOSTCC_C=$HOSTCC_C
7022 HOSTCC_O=$HOSTCC_O
7023 HOSTLD_O=$HOSTLD_O
7024 TARGET_EXEC=$target_exec $target_exec_args
7025 TARGET_PATH=$target_path
7026 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7027 CFLAGS-ffplay=${sdl2_cflags}
7028 CFLAGS_HEADERS=$CFLAGS_HEADERS
7029 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7030 EXTRALIBS=$extralibs
7031 COMPAT_OBJS=$compat_objs
7032 INSTALL=$install
7033 LIBTARGET=${LIBTARGET}
7034 SLIBNAME=${SLIBNAME}
7035 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7036 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7037 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7038 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7039 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7040 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7041 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7042 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7043 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7044 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7045 NOREDZONE_FLAGS=$noredzone_flags
7046 LIBFUZZER_PATH=$libfuzzer_path
7047 IGNORE_TESTS=$ignore_tests
7048 EOF
7049
7050 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7051
7052 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7053     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7054 done
7055
7056 cat > $TMPH <<EOF
7057 /* Automatically generated by configure - do not modify! */
7058 #ifndef FFMPEG_CONFIG_H
7059 #define FFMPEG_CONFIG_H
7060 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7061 #define FFMPEG_LICENSE "$(c_escape $license)"
7062 #define CONFIG_THIS_YEAR 2017
7063 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7064 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7065 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7066 #define av_restrict $_restrict
7067 #define EXTERN_PREFIX "${extern_prefix}"
7068 #define EXTERN_ASM ${extern_prefix}
7069 #define BUILDSUF "$build_suffix"
7070 #define SLIBSUF "$SLIBSUF"
7071 #define HAVE_MMX2 HAVE_MMXEXT
7072 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7073 EOF
7074
7075 test -n "$assert_level" &&
7076     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7077
7078 test -n "$malloc_prefix" &&
7079     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7080
7081 if enabled x86asm; then
7082     append config_files $TMPASM
7083     printf '' >$TMPASM
7084 fi
7085
7086 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7087
7088
7089 mkdir -p doc
7090 mkdir -p tests
7091 mkdir -p tests/api
7092 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7093
7094 print_config ARCH_   "$config_files" $ARCH_LIST
7095 print_config HAVE_   "$config_files" $HAVE_LIST
7096 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7097                                      $CONFIG_EXTRA      \
7098                                      $ALL_COMPONENTS    \
7099
7100 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7101 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7102
7103 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7104 cp_if_changed $TMPH config.h
7105 touch ffbuild/.config
7106
7107 enabled x86asm && cp_if_changed $TMPASM config.asm
7108
7109 cat > $TMPH <<EOF
7110 /* Generated by ffconf */
7111 #ifndef AVUTIL_AVCONFIG_H
7112 #define AVUTIL_AVCONFIG_H
7113 EOF
7114
7115 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7116
7117 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7118
7119 cp_if_changed $TMPH libavutil/avconfig.h
7120
7121 # generate the lists of enabled components
7122 print_enabled_components(){
7123     file=$1
7124     struct_name=$2
7125     name=$3
7126     shift 3
7127     echo "static const $struct_name * const $name[] = {" > $TMPH
7128     for c in $*; do
7129         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7130     done
7131     echo "    NULL };" >> $TMPH
7132     cp_if_changed $TMPH $file
7133 }
7134
7135 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7136 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7137
7138 if test -n "$WARNINGS"; then
7139     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7140     enabled fatal_warnings && exit 1
7141 fi
7142
7143 # Settings for pkg-config files
7144
7145 cat > ffbuild/config.sh <<EOF
7146 # Automatically generated by configure - do not modify!
7147 shared=$shared
7148 build_suffix=$build_suffix
7149 prefix=$prefix
7150 libdir=$libdir
7151 incdir=$incdir
7152 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7153 source_path=${source_path}
7154 LIBPREF=${LIBPREF}
7155 LIBSUF=${LIBSUF}
7156 extralibs_avutil="$avutil_extralibs"
7157 extralibs_avcodec="$avcodec_extralibs"
7158 extralibs_avformat="$avformat_extralibs"
7159 extralibs_avdevice="$avdevice_extralibs"
7160 extralibs_avfilter="$avfilter_extralibs"
7161 extralibs_avresample="$avresample_extralibs"
7162 extralibs_postproc="$postproc_extralibs"
7163 extralibs_swscale="$swscale_extralibs"
7164 extralibs_swresample="$swresample_extralibs"
7165 EOF
7166
7167 for lib in $LIBRARY_LIST; do
7168     lib_deps="$(eval echo \$${lib}_deps)"
7169     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7170 done