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