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

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