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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --enable-jni             enable JNI support [no]
 221   --enable-ladspa          enable LADSPA audio filtering [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --disable-lzma           disable lzma [autodetect]
 287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 289   --enable-mediacodec      enable Android MediaCodec support [no]
 290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 291   --enable-openal          enable OpenAL 1.1 capture support [no]
 292   --enable-opencl          enable OpenCL code
 293   --enable-opengl          enable OpenGL rendering [no]
 294   --enable-openssl         enable openssl, needed for https support
 295                            if gnutls is not used [no]
 296   --disable-sndio          disable sndio support [autodetect]
 297   --disable-schannel       disable SChannel SSP, needed for TLS support on
 298                            Windows if openssl and gnutls are not used [autodetect]
 299   --disable-sdl2           disable sdl2 [autodetect]
 300   --disable-securetransport disable Secure Transport, needed for TLS support
 301                            on OSX if openssl and gnutls are not used [autodetect]
 302   --disable-xlib           disable xlib [autodetect]
 303   --disable-zlib           disable zlib [autodetect]
 304
 305   The following libraries provide various hardware acceleration features:
 306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 312   --enable-libdrm          enable DRM code (Linux) [no]
 313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 316   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 317   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 318   --enable-omx             enable OpenMAX IL code [no]
 319   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 320   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 321   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 324
 325 Toolchain options:
 326   --arch=ARCH              select architecture [$arch]
 327   --cpu=CPU                select the minimum required CPU (affects
 328                            instruction selection, may crash on older CPUs)
 329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 330   --progs-suffix=SUFFIX    program name suffix []
 331   --enable-cross-compile   assume a cross-compiler is used
 332   --sysroot=PATH           root of cross-build tree
 333   --sysinclude=PATH        location of cross-build system headers
 334   --target-os=OS           compiler targets OS [$target_os]
 335   --target-exec=CMD        command to run executables on target
 336   --target-path=DIR        path to view of build directory on target
 337   --target-samples=DIR     path to samples directory on target
 338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 339   --toolchain=NAME         set tool defaults according to NAME
 340   --nm=NM                  use nm tool NM [$nm_default]
 341   --ar=AR                  use archive tool AR [$ar_default]
 342   --as=AS                  use assembler AS [$as_default]
 343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 344   --strip=STRIP            use strip tool STRIP [$strip_default]
 345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 347   --cc=CC                  use C compiler CC [$cc_default]
 348   --cxx=CXX                use C compiler CXX [$cxx_default]
 349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 352   --ld=LD                  use linker LD [$ld_default]
 353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 357   --host-cc=HOSTCC         use host C compiler HOSTCC
 358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 360   --host-ld=HOSTLD         use host linker HOSTLD
 361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 362   --host-libs=HLIBS        use libs HLIBS when linking for host
 363   --host-os=OS             compiler host OS [$target_os]
 364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 369   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 371   --extra-version=STRING   version string suffix []
 372   --optflags=OPTFLAGS      override optimization-related compiler flags
 373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 374   --build-suffix=SUFFIX    library name suffix []
 375   --enable-pic             build position-independent code
 376   --enable-thumb           compile for Thumb instruction set
 377   --enable-lto             use link-time optimization
 378   --env="ENV=override"     override the environment variables
 379
 380 Advanced options (experts only):
 381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 382   --custom-allocator=NAME  use a supported custom allocator
 383   --disable-symver         disable symbol versioning
 384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 385   --disable-safe-bitstream-reader
 386                            disable buffer boundary checking in bitreaders
 387                            (faster, but may crash)
 388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 389
 390 Optimization options (experts only):
 391   --disable-asm            disable all assembly optimizations
 392   --disable-altivec        disable AltiVec optimizations
 393   --disable-vsx            disable VSX optimizations
 394   --disable-power8         disable POWER8 optimizations
 395   --disable-amd3dnow       disable 3DNow! optimizations
 396   --disable-amd3dnowext    disable 3DNow! extended optimizations
 397   --disable-mmx            disable MMX optimizations
 398   --disable-mmxext         disable MMXEXT optimizations
 399   --disable-sse            disable SSE optimizations
 400   --disable-sse2           disable SSE2 optimizations
 401   --disable-sse3           disable SSE3 optimizations
 402   --disable-ssse3          disable SSSE3 optimizations
 403   --disable-sse4           disable SSE4 optimizations
 404   --disable-sse42          disable SSE4.2 optimizations
 405   --disable-avx            disable AVX optimizations
 406   --disable-xop            disable XOP optimizations
 407   --disable-fma3           disable FMA3 optimizations
 408   --disable-fma4           disable FMA4 optimizations
 409   --disable-avx2           disable AVX2 optimizations
 410   --disable-aesni          disable AESNI optimizations
 411   --disable-armv5te        disable armv5te optimizations
 412   --disable-armv6          disable armv6 optimizations
 413   --disable-armv6t2        disable armv6t2 optimizations
 414   --disable-vfp            disable VFP optimizations
 415   --disable-neon           disable NEON optimizations
 416   --disable-inline-asm     disable use of inline assembly
 417   --disable-x86asm         disable use of standalone x86 assembly
 418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 420   --disable-msa            disable MSA optimizations
 421   --disable-mipsfpu        disable floating point MIPS optimizations
 422   --disable-mmi            disable Loongson SIMD optimizations
 423   --disable-fast-unaligned consider unaligned accesses slow
 424
 425 Developer options (useful when working on FFmpeg itself):
 426   --disable-debug          disable debugging symbols
 427   --enable-debug=LEVEL     set the debug level [$debuglevel]
 428   --disable-optimizations  disable compiler optimizations
 429   --enable-extra-warnings  enable more compiler warnings
 430   --disable-stripping      disable stripping of executables and shared libraries
 431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 432                            2 causes a slowdown at runtime.
 433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 435                            leaks and errors, using the specified valgrind binary.
 436                            Cannot be combined with --target-exec
 437   --enable-ftrapv          Trap arithmetic overflows
 438   --samples=PATH           location of test samples for FATE, if not set use
 439                            \$FATE_SAMPLES at make invocation time.
 440   --enable-neon-clobber-test check NEON registers for clobbering (should be
 441                            used only for debugging purposes)
 442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 443                            should be used only for debugging purposes)
 444   --enable-random          randomly enable/disable components
 445   --disable-random
 446   --enable-random=LIST     randomly enable/disable specific components or
 447   --disable-random=LIST    component groups. LIST is a comma-separated list
 448                            of NAME[:PROB] entries where NAME is a component
 449                            (group) and PROB the probability associated with
 450                            NAME (default 0.5).
 451   --random-seed=VALUE      seed value for --enable/disable-random
 452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 453                            (only applies to --disable-optimizations builds)
 454   --enable-osfuzz          Enable building fuzzer tool
 455   --libfuzzer=PATH         path to libfuzzer
 456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 457                            in the name) of tests whose result is ignored
 458   --enable-linux-perf      enable Linux Performance Monitor API
 459
 460 NOTE: Object files are built at the place where configure is launched.
 461 EOF
 462   exit 0
 463 }
 464
 465 quotes='""'
 466 if test -t 1 && which tput >/dev/null 2>&1; then
 467     ncolors=$(tput colors)
 468     if test -n "$ncolors" && test $ncolors -ge 8; then
 469         bold_color=$(tput bold)
 470         warn_color=$(tput setaf 3)
 471         error_color=$(tput setaf 1)
 472         reset_color=$(tput sgr0)
 473     fi
 474     # 72 used instead of 80 since that's the default of pr
 475     ncols=$(tput cols)
 476 fi
 477 : ${ncols:=72}
 478
 479 log(){
 480     echo "$@" >> $logfile
 481 }
 482
 483 log_file(){
 484     log BEGIN $1
 485     pr -n -t $1 >> $logfile
 486     log END $1
 487 }
 488
 489 warn(){
 490     log "WARNING: $*"
 491     WARNINGS="${WARNINGS}WARNING: $*\n"
 492 }
 493
 494 die(){
 495     log "$@"
 496     echo "$error_color$bold_color$@$reset_color"
 497     cat <<EOF
 498
 499 If you think configure made a mistake, make sure you are using the latest
 500 version from Git.  If the latest version fails, report the problem to the
 501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 502 EOF
 503     if disabled logging; then
 504         cat <<EOF
 505 Rerun configure with logging enabled (do not use --disable-logging), and
 506 include the log this produces with your report.
 507 EOF
 508     else
 509         cat <<EOF
 510 Include the log file "$logfile" produced by configure as this will help
 511 solve the problem.
 512 EOF
 513     fi
 514     exit 1
 515 }
 516
 517 # Avoid locale weirdness, besides we really just want to translate ASCII.
 518 toupper(){
 519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 520 }
 521
 522 tolower(){
 523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 524 }
 525
 526 c_escape(){
 527     echo "$*" | sed 's/["\\]/\\\0/g'
 528 }
 529
 530 sh_quote(){
 531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 533     echo "$v"
 534 }
 535
 536 cleanws(){
 537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 538 }
 539
 540 filter(){
 541     pat=$1
 542     shift
 543     for v; do
 544         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 545     done
 546 }
 547
 548 filter_out(){
 549     pat=$1
 550     shift
 551     for v; do
 552         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 553     done
 554 }
 555
 556 map(){
 557     m=$1
 558     shift
 559     for v; do eval $m; done
 560 }
 561
 562 add_suffix(){
 563     suffix=$1
 564     shift
 565     for v; do echo ${v}${suffix}; done
 566 }
 567
 568 set_all(){
 569     value=$1
 570     shift
 571     for var in $*; do
 572         eval $var=$value
 573     done
 574 }
 575
 576 set_weak(){
 577     value=$1
 578     shift
 579     for var; do
 580         eval : \${$var:=$value}
 581     done
 582 }
 583
 584 sanitize_var_name(){
 585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 586 }
 587
 588 set_sanitized(){
 589     var=$1
 590     shift
 591     eval $(sanitize_var_name "$var")='$*'
 592 }
 593
 594 get_sanitized(){
 595     eval echo \$$(sanitize_var_name "$1")
 596 }
 597
 598 pushvar(){
 599     for pvar in $*; do
 600         eval level=\${${pvar}_level:=0}
 601         eval ${pvar}_${level}="\$$pvar"
 602         eval ${pvar}_level=$(($level+1))
 603     done
 604 }
 605
 606 popvar(){
 607     for pvar in $*; do
 608         eval level=\${${pvar}_level:-0}
 609         test $level = 0 && continue
 610         eval level=$(($level-1))
 611         eval $pvar="\${${pvar}_${level}}"
 612         eval ${pvar}_level=$level
 613         eval unset ${pvar}_${level}
 614     done
 615 }
 616
 617 request(){
 618     for var in $*; do
 619         eval ${var}_requested=yes
 620         eval $var=
 621     done
 622 }
 623
 624 enable(){
 625     set_all yes $*
 626 }
 627
 628 disable(){
 629     set_all no $*
 630 }
 631
 632 enable_weak(){
 633     set_weak yes $*
 634 }
 635
 636 disable_weak(){
 637     set_weak no $*
 638 }
 639
 640 enable_sanitized(){
 641     for var; do
 642         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 643     done
 644 }
 645
 646 disable_sanitized(){
 647     for var; do
 648         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 649     done
 650 }
 651
 652 do_enable_deep(){
 653     for var; do
 654         enabled $var && continue
 655         eval sel="\$${var}_select"
 656         eval sgs="\$${var}_suggest"
 657         pushvar var sgs
 658         enable_deep $sel
 659         popvar sgs
 660         enable_deep_weak $sgs
 661         popvar var
 662     done
 663 }
 664
 665 enable_deep(){
 666     do_enable_deep $*
 667     enable $*
 668 }
 669
 670 enable_deep_weak(){
 671     for var; do
 672         disabled $var && continue
 673         pushvar var
 674         do_enable_deep $var
 675         popvar var
 676         enable_weak $var
 677     done
 678 }
 679
 680 requested(){
 681     test "${1#!}" = "$1" && op='=' || op=!=
 682     eval test "x\$${1#!}_requested" $op "xyes"
 683 }
 684
 685 enabled(){
 686     test "${1#!}" = "$1" && op='=' || op=!=
 687     eval test "x\$${1#!}" $op "xyes"
 688 }
 689
 690 disabled(){
 691     test "${1#!}" = "$1" && op='=' || op=!=
 692     eval test "x\$${1#!}" $op "xno"
 693 }
 694
 695 enabled_all(){
 696     for opt; do
 697         enabled $opt || return 1
 698     done
 699 }
 700
 701 disabled_all(){
 702     for opt; do
 703         disabled $opt || return 1
 704     done
 705 }
 706
 707 enabled_any(){
 708     for opt; do
 709         enabled $opt && return 0
 710     done
 711 }
 712
 713 disabled_any(){
 714     for opt; do
 715         disabled $opt && return 0
 716     done
 717     return 1
 718 }
 719
 720 set_default(){
 721     for opt; do
 722         eval : \${$opt:=\$${opt}_default}
 723     done
 724 }
 725
 726 is_in(){
 727     value=$1
 728     shift
 729     for var in $*; do
 730         [ $var = $value ] && return 0
 731     done
 732     return 1
 733 }
 734
 735 check_deps(){
 736     for cfg; do
 737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 738         disabled ${cfg}_checking && continue
 739         enable ${cfg}_checking
 740
 741         eval dep_all="\$${cfg}_deps"
 742         eval dep_any="\$${cfg}_deps_any"
 743         eval dep_con="\$${cfg}_conflict"
 744         eval dep_sel="\$${cfg}_select"
 745         eval dep_sgs="\$${cfg}_suggest"
 746         eval dep_ifa="\$${cfg}_if"
 747         eval dep_ifn="\$${cfg}_if_any"
 748
 749         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 750         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 751         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 752
 753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 757         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 758         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 759
 760         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 761
 762         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 763             # filter out library deps, these do not belong in extralibs
 764             is_in $dep $LIBRARY_LIST && continue
 765             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 766         done
 767
 768         disable ${cfg}_checking
 769     done
 770 }
 771
 772 print_config(){
 773     pfx=$1
 774     files=$2
 775     shift 2
 776     map 'eval echo "$v \${$v:-no}"' "$@" |
 777     awk "BEGIN { split(\"$files\", files) }
 778         {
 779             c = \"$pfx\" toupper(\$1);
 780             v = \$2;
 781             sub(/yes/, 1, v);
 782             sub(/no/,  0, v);
 783             for (f in files) {
 784                 file = files[f];
 785                 if (file ~ /\\.h\$/) {
 786                     printf(\"#define %s %d\\n\", c, v) >>file;
 787                 } else if (file ~ /\\.asm\$/) {
 788                     printf(\"%%define %s %d\\n\", c, v) >>file;
 789                 } else if (file ~ /\\.mak\$/) {
 790                     n = -v ? \"\" : \"!\";
 791                     printf(\"%s%s=yes\\n\", n, c) >>file;
 792                 } else if (file ~ /\\.texi\$/) {
 793                     pre = -v ? \"\" : \"@c \";
 794                     yesno = \$2;
 795                     c2 = tolower(c);
 796                     gsub(/_/, \"-\", c2);
 797                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 798                 }
 799             }
 800         }"
 801 }
 802
 803 print_enabled(){
 804     suf=$1
 805     shift
 806     for v; do
 807         enabled $v && printf "%s\n" ${v%$suf}
 808     done
 809 }
 810
 811 append(){
 812     var=$1
 813     shift
 814     eval "$var=\"\$$var $*\""
 815 }
 816
 817 prepend(){
 818     var=$1
 819     shift
 820     eval "$var=\"$* \$$var\""
 821 }
 822
 823 unique(){
 824     var=$1
 825     uniq_list=""
 826     for tok in $(eval echo \$$var); do
 827         uniq_list="$(filter_out $tok $uniq_list) $tok"
 828     done
 829     eval "$var=\"${uniq_list}\""
 830 }
 831
 832 resolve(){
 833     var=$1
 834     tmpvar=
 835     for entry in $(eval echo \$$var); do
 836         tmpvar="$tmpvar $(eval echo \$${entry})"
 837     done
 838     eval "$var=\"${tmpvar}\""
 839 }
 840
 841 add_cppflags(){
 842     append CPPFLAGS "$@"
 843 }
 844
 845 add_cflags(){
 846     append CFLAGS $($cflags_filter "$@")
 847 }
 848
 849 add_cflags_headers(){
 850     append CFLAGS_HEADERS $($cflags_filter "$@")
 851 }
 852
 853 add_cxxflags(){
 854     append CXXFLAGS $($cflags_filter "$@")
 855 }
 856
 857 add_asflags(){
 858     append ASFLAGS $($asflags_filter "$@")
 859 }
 860
 861 add_objcflags(){
 862     append OBJCFLAGS $($objcflags_filter "$@")
 863 }
 864
 865 add_ldflags(){
 866     append LDFLAGS $($ldflags_filter "$@")
 867 }
 868
 869 add_ldexeflags(){
 870     append LDEXEFLAGS $($ldflags_filter "$@")
 871 }
 872
 873 add_ldsoflags(){
 874     append LDSOFLAGS $($ldflags_filter "$@")
 875 }
 876
 877 add_stripflags(){
 878     append ASMSTRIPFLAGS "$@"
 879 }
 880
 881 add_extralibs(){
 882     prepend extralibs $($ldflags_filter "$@")
 883 }
 884
 885 add_host_cppflags(){
 886     append host_cppflags "$@"
 887 }
 888
 889 add_host_cflags(){
 890     append host_cflags $($host_cflags_filter "$@")
 891 }
 892
 893 add_host_ldflags(){
 894     append host_ldflags $($host_ldflags_filter "$@")
 895 }
 896
 897 add_compat(){
 898     append compat_objs $1
 899     shift
 900     map 'add_cppflags -D$v' "$@"
 901 }
 902
 903 check_cmd(){
 904     log "$@"
 905     "$@" >> $logfile 2>&1
 906 }
 907
 908 check_stat(){
 909     log check_stat "$@"
 910     stat "$1" >> $logfile 2>&1
 911 }
 912
 913 cc_o(){
 914     eval printf '%s\\n' $CC_O
 915 }
 916
 917 cc_e(){
 918     eval printf '%s\\n' $CC_E
 919 }
 920
 921 check_cc(){
 922     log check_cc "$@"
 923     cat > $TMPC
 924     log_file $TMPC
 925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 926 }
 927
 928 check_cxx(){
 929     log check_cxx "$@"
 930     cat > $TMPCPP
 931     log_file $TMPCPP
 932     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 933 }
 934
 935 check_objcc(){
 936     log check_objcc "$@"
 937     cat > $TMPM
 938     log_file $TMPM
 939     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 940 }
 941
 942 check_cpp(){
 943     log check_cpp "$@"
 944     cat > $TMPC
 945     log_file $TMPC
 946     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 947 }
 948
 949 as_o(){
 950     eval printf '%s\\n' $AS_O
 951 }
 952
 953 check_as(){
 954     log check_as "$@"
 955     cat > $TMPS
 956     log_file $TMPS
 957     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 958 }
 959
 960 check_inline_asm(){
 961     log check_inline_asm "$@"
 962     name="$1"
 963     code="$2"
 964     shift 2
 965     disable $name
 966     check_cc "$@" <<EOF && enable $name
 967 void foo(void){ __asm__ volatile($code); }
 968 EOF
 969 }
 970
 971 check_inline_asm_flags(){
 972     log check_inline_asm_flags "$@"
 973     name="$1"
 974     code="$2"
 975     flags=''
 976     shift 2
 977     while [ "$1" != "" ]; do
 978       append flags $1
 979       shift
 980     done;
 981     disable $name
 982     cat > $TMPC <<EOF
 983 void foo(void){ __asm__ volatile($code); }
 984 EOF
 985     log_file $TMPC
 986     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 987     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 988 }
 989
 990 check_insn(){
 991     log check_insn "$@"
 992     check_inline_asm ${1}_inline "\"$2\""
 993     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 994 }
 995
 996 check_x86asm(){
 997     log check_x86asm "$@"
 998     echo "$1" > $TMPS
 999     log_file $TMPS
1000     shift 1
1001     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 check_ld(){
1009     log check_ld "$@"
1010     type=$1
1011     shift 1
1012     flags=$(filter_out '-l*|*.so' $@)
1013     libs=$(filter '-l*|*.so' $@)
1014     check_$type $($cflags_filter $flags) || return
1015     flags=$($ldflags_filter $flags)
1016     libs=$($ldflags_filter $libs)
1017     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1018 }
1019
1020 print_include(){
1021     hdr=$1
1022     test "${hdr%.h}" = "${hdr}" &&
1023         echo "#include $hdr"    ||
1024         echo "#include <$hdr>"
1025 }
1026
1027 check_code(){
1028     log check_code "$@"
1029     check=$1
1030     headers=$2
1031     code=$3
1032     shift 3
1033     {
1034         for hdr in $headers; do
1035             print_include $hdr
1036         done
1037         echo "int main(void) { $code; return 0; }"
1038     } | check_$check "$@"
1039 }
1040
1041 check_cppflags(){
1042     log check_cppflags "$@"
1043     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1044 #include <stdlib.h>
1045 EOF
1046 }
1047
1048 test_cflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_cflags(){
1057     log check_cflags "$@"
1058     test_cflags "$@" && add_cflags "$@"
1059 }
1060
1061 check_cxxflags(){
1062     log check_cxxflags "$@"
1063     set -- $($cflags_filter "$@")
1064     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1065 int x;
1066 EOF
1067 }
1068
1069 test_objcflags(){
1070     log test_objcflags "$@"
1071     set -- $($objcflags_filter "$@")
1072     check_objcc "$@" <<EOF
1073 int x;
1074 EOF
1075 }
1076
1077 check_objcflags(){
1078     log check_objcflags "$@"
1079     test_objcflags "$@" && add_objcflags "$@"
1080 }
1081
1082 test_ldflags(){
1083     log test_ldflags "$@"
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     headers=$1
1111     shift
1112     disable_sanitized $headers
1113     {
1114         for hdr in $headers; do
1115             print_include $hdr
1116         done
1117         echo "int x;"
1118     } | check_cpp "$@" && enable_sanitized $headers
1119 }
1120
1121 check_header_objcc(){
1122     log check_header_objcc "$@"
1123     rm -f -- "$TMPO"
1124     header=$1
1125     shift
1126     disable_sanitized $header
1127     {
1128        echo "#include <$header>"
1129        echo "int main(void) { return 0; }"
1130     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1131 }
1132
1133 check_apple_framework(){
1134     log check_apple_framework "$@"
1135     framework="$1"
1136     name="$(tolower $framework)"
1137     header="${framework}/${framework}.h"
1138     disable $name
1139     check_header_objcc $header &&
1140         enable $name && eval ${name}_extralibs='"-framework $framework"'
1141 }
1142
1143 check_func(){
1144     log check_func "$@"
1145     func=$1
1146     shift
1147     disable $func
1148     check_ld "cc" "$@" <<EOF && enable $func
1149 extern int $func();
1150 int main(void){ $func(); }
1151 EOF
1152 }
1153
1154 check_complexfunc(){
1155     log check_complexfunc "$@"
1156     func=$1
1157     narg=$2
1158     shift 2
1159     test $narg = 2 && args="f, g" || args="f * I"
1160     disable $func
1161     check_ld "cc" "$@" <<EOF && enable $func
1162 #include <complex.h>
1163 #include <math.h>
1164 float foo(complex float f, complex float g) { return $func($args); }
1165 int main(void){ return (int) foo; }
1166 EOF
1167 }
1168
1169 check_mathfunc(){
1170     log check_mathfunc "$@"
1171     func=$1
1172     narg=$2
1173     shift 2
1174     test $narg = 2 && args="f, g" || args="f"
1175     disable $func
1176     check_ld "cc" "$@" <<EOF && enable $func
1177 #include <math.h>
1178 float foo(float f, float g) { return $func($args); }
1179 int main(void){ return (int) foo; }
1180 EOF
1181 }
1182
1183 check_func_headers(){
1184     log check_func_headers "$@"
1185     headers=$1
1186     funcs=$2
1187     shift 2
1188     {
1189         for hdr in $headers; do
1190             print_include $hdr
1191         done
1192         echo "#include <stdint.h>"
1193         for func in $funcs; do
1194             echo "long check_$func(void) { return (long) $func; }"
1195         done
1196         echo "int main(void) { int ret = 0;"
1197         # LTO could optimize out the test functions without this
1198         for func in $funcs; do
1199             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1200         done
1201         echo "return ret; }"
1202     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1203 }
1204
1205 check_class_headers_cpp(){
1206     log check_class_headers_cpp "$@"
1207     headers=$1
1208     classes=$2
1209     shift 2
1210     {
1211         for hdr in $headers; do
1212             echo "#include <$hdr>"
1213         done
1214         echo "int main(void) { "
1215         i=1
1216         for class in $classes; do
1217             echo "$class obj$i;"
1218             i=$(expr $i + 1)
1219         done
1220         echo "return 0; }"
1221     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1222 }
1223
1224 check_cpp_condition(){
1225     log check_cpp_condition "$@"
1226     header=$1
1227     condition=$2
1228     shift 2
1229     check_cpp "$@" <<EOF
1230 #include <$header>
1231 #if !($condition)
1232 #error "unsatisfied condition: $condition"
1233 #endif
1234 EOF
1235 }
1236
1237 test_cflags_cc(){
1238     log test_cflags_cc "$@"
1239     flags=$1
1240     header=$2
1241     condition=$3
1242     shift 3
1243     set -- $($cflags_filter "$flags")
1244     check_cc "$@" <<EOF
1245 #include <$header>
1246 #if !($condition)
1247 #error "unsatisfied condition: $condition"
1248 #endif
1249 EOF
1250 }
1251
1252 check_lib(){
1253     log check_lib "$@"
1254     name="$1"
1255     headers="$2"
1256     funcs="$3"
1257     shift 3
1258     disable $name
1259     check_func_headers "$headers" "$funcs" "$@" &&
1260         enable $name && eval ${name}_extralibs="\$@"
1261 }
1262
1263 check_lib_cpp(){
1264     log check_lib_cpp "$@"
1265     name="$1"
1266     headers="$2"
1267     classes="$3"
1268     shift 3
1269     disable $name
1270     check_class_headers_cpp "$headers" "$classes" "$@" &&
1271         enable $name && eval ${name}_extralibs="\$@"
1272 }
1273
1274 test_pkg_config(){
1275     log test_pkg_config "$@"
1276     name="$1"
1277     pkg_version="$2"
1278     pkg="${2%% *}"
1279     headers="$3"
1280     funcs="$4"
1281     shift 4
1282     disable $name
1283     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1284     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1285     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1286     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1287         enable $name &&
1288         set_sanitized "${name}_cflags"    $pkg_cflags &&
1289         set_sanitized "${name}_extralibs" $pkg_libs
1290 }
1291
1292 check_pkg_config(){
1293     log check_pkg_config "$@"
1294     name="$1"
1295     test_pkg_config "$@" &&
1296         eval add_cflags \$${name}_cflags
1297 }
1298
1299 check_exec(){
1300     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1301 }
1302
1303 check_exec_crash(){
1304     log check_exec_crash "$@"
1305     code=$(cat)
1306
1307     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1308     # are safe but may not be available everywhere.  Thus we use
1309     # raise(SIGTERM) instead.  The check is run in a subshell so we
1310     # can redirect the "Terminated" message from the shell.  SIGBUS
1311     # is not defined by standard C so it is used conditionally.
1312
1313     (check_exec "$@") >> $logfile 2>&1 <<EOF
1314 #include <signal.h>
1315 static void sighandler(int sig){
1316     raise(SIGTERM);
1317 }
1318 int foo(void){
1319     $code
1320 }
1321 int (*func_ptr)(void) = foo;
1322 int main(void){
1323     signal(SIGILL, sighandler);
1324     signal(SIGFPE, sighandler);
1325     signal(SIGSEGV, sighandler);
1326 #ifdef SIGBUS
1327     signal(SIGBUS, sighandler);
1328 #endif
1329     return func_ptr();
1330 }
1331 EOF
1332 }
1333
1334 check_type(){
1335     log check_type "$@"
1336     headers=$1
1337     type=$2
1338     shift 2
1339     disable_sanitized "$type"
1340     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1341 }
1342
1343 check_struct(){
1344     log check_struct "$@"
1345     headers=$1
1346     struct=$2
1347     member=$3
1348     shift 3
1349     disable_sanitized "${struct}_${member}"
1350     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1351         enable_sanitized "${struct}_${member}"
1352 }
1353
1354 check_builtin(){
1355     log check_builtin "$@"
1356     name=$1
1357     headers=$2
1358     builtin=$3
1359     shift 3
1360     disable "$name"
1361     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1362 }
1363
1364 check_compile_assert(){
1365     log check_compile_assert "$@"
1366     name=$1
1367     headers=$2
1368     condition=$3
1369     shift 3
1370     disable "$name"
1371     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1372 }
1373
1374 require(){
1375     log require "$@"
1376     name_version="$1"
1377     name="${1%% *}"
1378     headers="$2"
1379     func="$3"
1380     shift 3
1381     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1382 }
1383
1384 require_cpp(){
1385     name="$1"
1386     headers="$2"
1387     classes="$3"
1388     shift 3
1389     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1390 }
1391
1392 require_header(){
1393     log require "$@"
1394     headers="$1"
1395     shift
1396     check_header "$headers" "$@" || die "ERROR: $headers not found"
1397 }
1398
1399 require_cpp_condition(){
1400     log require "$@"
1401     header="$1"
1402     condition="$2"
1403     shift 2
1404     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1405 }
1406
1407 require_pkg_config(){
1408     log require_pkg_config "$@"
1409     pkg_version="$2"
1410     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1411 }
1412
1413 hostcc_e(){
1414     eval printf '%s\\n' $HOSTCC_E
1415 }
1416
1417 hostcc_o(){
1418     eval printf '%s\\n' $HOSTCC_O
1419 }
1420
1421 check_host_cc(){
1422     log check_host_cc "$@"
1423     cat > $TMPC
1424     log_file $TMPC
1425     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1426 }
1427
1428 check_host_cpp(){
1429     log check_host_cpp "$@"
1430     cat > $TMPC
1431     log_file $TMPC
1432     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1433 }
1434
1435 check_host_cppflags(){
1436     log check_host_cppflags "$@"
1437     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1438 #include <stdlib.h>
1439 EOF
1440 }
1441
1442 check_host_cflags(){
1443     log check_host_cflags "$@"
1444     set -- $($host_cflags_filter "$@")
1445     check_host_cc "$@" <<EOF && append host_cflags "$@"
1446 int x;
1447 EOF
1448 }
1449
1450 check_host_cpp_condition(){
1451     log check_host_cpp_condition "$@"
1452     header=$1
1453     condition=$2
1454     shift 2
1455     check_host_cpp "$@" <<EOF
1456 #include <$header>
1457 #if !($condition)
1458 #error "unsatisfied condition: $condition"
1459 #endif
1460 EOF
1461 }
1462
1463 cp_if_changed(){
1464     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1465     mkdir -p "$(dirname $2)"
1466     cp -f "$1" "$2"
1467 }
1468
1469 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1470 # system-dependent things.
1471
1472 AVCODEC_COMPONENTS="
1473     bsfs
1474     decoders
1475     encoders
1476     hwaccels
1477     parsers
1478 "
1479
1480 AVDEVICE_COMPONENTS="
1481     indevs
1482     outdevs
1483 "
1484
1485 AVFILTER_COMPONENTS="
1486     filters
1487 "
1488
1489 AVFORMAT_COMPONENTS="
1490     demuxers
1491     muxers
1492     protocols
1493 "
1494
1495 COMPONENT_LIST="
1496     $AVCODEC_COMPONENTS
1497     $AVDEVICE_COMPONENTS
1498     $AVFILTER_COMPONENTS
1499     $AVFORMAT_COMPONENTS
1500 "
1501
1502 EXAMPLE_LIST="
1503     avio_dir_cmd_example
1504     avio_reading_example
1505     decode_audio_example
1506     decode_video_example
1507     demuxing_decoding_example
1508     encode_audio_example
1509     encode_video_example
1510     extract_mvs_example
1511     filter_audio_example
1512     filtering_audio_example
1513     filtering_video_example
1514     http_multiclient_example
1515     hw_decode_example
1516     metadata_example
1517     muxing_example
1518     qsvdec_example
1519     remuxing_example
1520     resampling_audio_example
1521     scaling_video_example
1522     transcode_aac_example
1523     transcoding_example
1524 "
1525
1526 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1527     alsa
1528     appkit
1529     avfoundation
1530     bzlib
1531     coreimage
1532     iconv
1533     libxcb
1534     libxcb_shm
1535     libxcb_shape
1536     libxcb_xfixes
1537     lzma
1538     schannel
1539     sdl2
1540     securetransport
1541     sndio
1542     xlib
1543     zlib
1544 "
1545
1546 EXTERNAL_LIBRARY_GPL_LIST="
1547     avisynth
1548     frei0r
1549     libcdio
1550     librubberband
1551     libvidstab
1552     libx264
1553     libx265
1554     libxavs
1555     libxvid
1556 "
1557
1558 EXTERNAL_LIBRARY_NONFREE_LIST="
1559     decklink
1560     libndi_newtek
1561     libfdk_aac
1562     openssl
1563 "
1564
1565 EXTERNAL_LIBRARY_VERSION3_LIST="
1566     gmp
1567     libopencore_amrnb
1568     libopencore_amrwb
1569     libvmaf
1570     libvo_amrwbenc
1571     rkmpp
1572 "
1573
1574 EXTERNAL_LIBRARY_GPLV3_LIST="
1575     libsmbclient
1576 "
1577
1578 EXTERNAL_LIBRARY_LIST="
1579     $EXTERNAL_LIBRARY_GPL_LIST
1580     $EXTERNAL_LIBRARY_NONFREE_LIST
1581     $EXTERNAL_LIBRARY_VERSION3_LIST
1582     $EXTERNAL_LIBRARY_GPLV3_LIST
1583     chromaprint
1584     gcrypt
1585     gnutls
1586     jni
1587     ladspa
1588     libass
1589     libbluray
1590     libbs2b
1591     libcaca
1592     libcelt
1593     libdc1394
1594     libdrm
1595     libflite
1596     libfontconfig
1597     libfreetype
1598     libfribidi
1599     libgme
1600     libgsm
1601     libiec61883
1602     libilbc
1603     libjack
1604     libkvazaar
1605     libmodplug
1606     libmp3lame
1607     libmysofa
1608     libopencv
1609     libopenh264
1610     libopenjpeg
1611     libopenmpt
1612     libopus
1613     libpulse
1614     librsvg
1615     librtmp
1616     libshine
1617     libsmbclient
1618     libsnappy
1619     libsoxr
1620     libspeex
1621     libssh
1622     libtesseract
1623     libtheora
1624     libtwolame
1625     libv4l2
1626     libvorbis
1627     libvpx
1628     libwavpack
1629     libwebp
1630     libxml2
1631     libzimg
1632     libzmq
1633     libzvbi
1634     mediacodec
1635     openal
1636     opencl
1637     opengl
1638 "
1639
1640 HWACCEL_AUTODETECT_LIBRARY_LIST="
1641     audiotoolbox
1642     crystalhd
1643     cuda
1644     cuvid
1645     d3d11va
1646     dxva2
1647     nvdec
1648     nvenc
1649     vaapi
1650     vdpau
1651     videotoolbox
1652     v4l2_m2m
1653     xvmc
1654 "
1655
1656 # catchall list of things that require external libs to link
1657 EXTRALIBS_LIST="
1658     cpu_init
1659     cws2fws
1660 "
1661
1662 HWACCEL_LIBRARY_NONFREE_LIST="
1663     cuda_sdk
1664     libnpp
1665 "
1666
1667 HWACCEL_LIBRARY_LIST="
1668     $HWACCEL_LIBRARY_NONFREE_LIST
1669     libmfx
1670     mmal
1671     omx
1672 "
1673
1674 DOCUMENT_LIST="
1675     doc
1676     htmlpages
1677     manpages
1678     podpages
1679     txtpages
1680 "
1681
1682 FEATURE_LIST="
1683     ftrapv
1684     gray
1685     hardcoded_tables
1686     omx_rpi
1687     runtime_cpudetect
1688     safe_bitstream_reader
1689     shared
1690     small
1691     static
1692     swscale_alpha
1693 "
1694
1695 LIBRARY_LIST="
1696     avcodec
1697     avdevice
1698     avfilter
1699     avformat
1700     avresample
1701     avutil
1702     postproc
1703     swresample
1704     swscale
1705 "
1706
1707 LICENSE_LIST="
1708     gpl
1709     nonfree
1710     version3
1711 "
1712
1713 PROGRAM_LIST="
1714     ffplay
1715     ffprobe
1716     ffserver
1717     ffmpeg
1718 "
1719
1720 SUBSYSTEM_LIST="
1721     dct
1722     dwt
1723     error_resilience
1724     faan
1725     fast_unaligned
1726     fft
1727     lsp
1728     lzo
1729     mdct
1730     pixelutils
1731     network
1732     rdft
1733 "
1734
1735 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1736 CONFIG_LIST="
1737     $DOCUMENT_LIST
1738     $EXAMPLE_LIST
1739     $EXTERNAL_LIBRARY_LIST
1740     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1741     $HWACCEL_LIBRARY_LIST
1742     $HWACCEL_AUTODETECT_LIBRARY_LIST
1743     $FEATURE_LIST
1744     $LICENSE_LIST
1745     $LIBRARY_LIST
1746     $PROGRAM_LIST
1747     $SUBSYSTEM_LIST
1748     autodetect
1749     fontconfig
1750     linux_perf
1751     memory_poisoning
1752     neon_clobber_test
1753     ossfuzz
1754     pic
1755     thumb
1756     valgrind_backtrace
1757     xmm_clobber_test
1758     $COMPONENT_LIST
1759 "
1760
1761 THREADS_LIST="
1762     pthreads
1763     os2threads
1764     w32threads
1765 "
1766
1767 ATOMICS_LIST="
1768     atomics_gcc
1769     atomics_suncc
1770     atomics_win32
1771 "
1772
1773 AUTODETECT_LIBS="
1774     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1775     $HWACCEL_AUTODETECT_LIBRARY_LIST
1776     $THREADS_LIST
1777 "
1778
1779 ARCH_LIST="
1780     aarch64
1781     alpha
1782     arm
1783     avr32
1784     avr32_ap
1785     avr32_uc
1786     bfin
1787     ia64
1788     m68k
1789     mips
1790     mips64
1791     parisc
1792     ppc
1793     ppc64
1794     s390
1795     sh4
1796     sparc
1797     sparc64
1798     tilegx
1799     tilepro
1800     tomi
1801     x86
1802     x86_32
1803     x86_64
1804 "
1805
1806 ARCH_EXT_LIST_ARM="
1807     armv5te
1808     armv6
1809     armv6t2
1810     armv8
1811     neon
1812     vfp
1813     vfpv3
1814     setend
1815 "
1816
1817 ARCH_EXT_LIST_MIPS="
1818     mipsfpu
1819     mips32r2
1820     mips32r5
1821     mips64r2
1822     mips32r6
1823     mips64r6
1824     mipsdsp
1825     mipsdspr2
1826     msa
1827 "
1828
1829 ARCH_EXT_LIST_LOONGSON="
1830     loongson2
1831     loongson3
1832     mmi
1833 "
1834
1835 ARCH_EXT_LIST_X86_SIMD="
1836     aesni
1837     amd3dnow
1838     amd3dnowext
1839     avx
1840     avx2
1841     fma3
1842     fma4
1843     mmx
1844     mmxext
1845     sse
1846     sse2
1847     sse3
1848     sse4
1849     sse42
1850     ssse3
1851     xop
1852 "
1853
1854 ARCH_EXT_LIST_PPC="
1855     altivec
1856     dcbzl
1857     ldbrx
1858     power8
1859     ppc4xx
1860     vsx
1861 "
1862
1863 ARCH_EXT_LIST_X86="
1864     $ARCH_EXT_LIST_X86_SIMD
1865     cpunop
1866     i686
1867 "
1868
1869 ARCH_EXT_LIST="
1870     $ARCH_EXT_LIST_ARM
1871     $ARCH_EXT_LIST_PPC
1872     $ARCH_EXT_LIST_X86
1873     $ARCH_EXT_LIST_MIPS
1874     $ARCH_EXT_LIST_LOONGSON
1875 "
1876
1877 ARCH_FEATURES="
1878     aligned_stack
1879     fast_64bit
1880     fast_clz
1881     fast_cmov
1882     local_aligned
1883     simd_align_16
1884     simd_align_32
1885 "
1886
1887 BUILTIN_LIST="
1888     atomic_cas_ptr
1889     machine_rw_barrier
1890     MemoryBarrier
1891     mm_empty
1892     rdtsc
1893     sarestart
1894     sem_timedwait
1895     sync_val_compare_and_swap
1896 "
1897 HAVE_LIST_CMDLINE="
1898     inline_asm
1899     symver
1900     x86asm
1901 "
1902
1903 HAVE_LIST_PUB="
1904     bigendian
1905     fast_unaligned
1906 "
1907
1908 HEADERS_LIST="
1909     arpa_inet_h
1910     asm_types_h
1911     cdio_paranoia_h
1912     cdio_paranoia_paranoia_h
1913     cuda_h
1914     dispatch_dispatch_h
1915     dev_bktr_ioctl_bt848_h
1916     dev_bktr_ioctl_meteor_h
1917     dev_ic_bt8xx_h
1918     dev_video_bktr_ioctl_bt848_h
1919     dev_video_meteor_ioctl_meteor_h
1920     direct_h
1921     dirent_h
1922     dxgidebug_h
1923     dxva_h
1924     ES2_gl_h
1925     gsm_h
1926     io_h
1927     machine_ioctl_bt848_h
1928     machine_ioctl_meteor_h
1929     malloc_h
1930     opencv2_core_core_c_h
1931     OpenGL_gl3_h
1932     poll_h
1933     sys_param_h
1934     sys_resource_h
1935     sys_select_h
1936     sys_soundcard_h
1937     sys_time_h
1938     sys_un_h
1939     sys_videoio_h
1940     termios_h
1941     udplite_h
1942     unistd_h
1943     valgrind_valgrind_h
1944     windows_h
1945     winsock2_h
1946 "
1947
1948 INTRINSICS_LIST="
1949     intrinsics_neon
1950 "
1951
1952 COMPLEX_FUNCS="
1953     cabs
1954     cexp
1955 "
1956
1957 MATH_FUNCS="
1958     atanf
1959     atan2f
1960     cbrt
1961     cbrtf
1962     copysign
1963     cosf
1964     erf
1965     exp2
1966     exp2f
1967     expf
1968     hypot
1969     isfinite
1970     isinf
1971     isnan
1972     ldexpf
1973     llrint
1974     llrintf
1975     log2
1976     log2f
1977     log10f
1978     lrint
1979     lrintf
1980     powf
1981     rint
1982     round
1983     roundf
1984     sinf
1985     trunc
1986     truncf
1987 "
1988
1989 SYSTEM_FEATURES="
1990     atomics_native
1991     dos_paths
1992     libc_msvcrt
1993     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1994     section_data_rel_ro
1995     threads
1996     uwp
1997     winrt
1998 "
1999
2000 SYSTEM_FUNCS="
2001     access
2002     aligned_malloc
2003     arc4random
2004     clock_gettime
2005     closesocket
2006     CommandLineToArgvW
2007     fcntl
2008     getaddrinfo
2009     gethrtime
2010     getopt
2011     GetProcessAffinityMask
2012     GetProcessMemoryInfo
2013     GetProcessTimes
2014     getrusage
2015     GetSystemTimeAsFileTime
2016     gettimeofday
2017     glob
2018     glXGetProcAddress
2019     gmtime_r
2020     inet_aton
2021     isatty
2022     kbhit
2023     localtime_r
2024     lstat
2025     lzo1x_999_compress
2026     mach_absolute_time
2027     MapViewOfFile
2028     memalign
2029     mkstemp
2030     mmap
2031     mprotect
2032     nanosleep
2033     PeekNamedPipe
2034     posix_memalign
2035     pthread_cancel
2036     sched_getaffinity
2037     SetConsoleTextAttribute
2038     SetConsoleCtrlHandler
2039     setmode
2040     setrlimit
2041     Sleep
2042     strerror_r
2043     sysconf
2044     sysctl
2045     usleep
2046     UTGetOSTypeFromString
2047     VirtualAlloc
2048     wglGetProcAddress
2049 "
2050
2051 SYSTEM_LIBRARIES="
2052     vaapi_drm
2053     vaapi_x11
2054     vdpau_x11
2055     wincrypt
2056 "
2057
2058 TOOLCHAIN_FEATURES="
2059     as_arch_directive
2060     as_fpu_directive
2061     as_func
2062     as_object_arch
2063     asm_mod_q
2064     blocks_extension
2065     ebp_available
2066     ebx_available
2067     gnu_as
2068     gnu_windres
2069     ibm_asm
2070     inline_asm_direct_symbol_refs
2071     inline_asm_labels
2072     inline_asm_nonlocal_labels
2073     pragma_deprecated
2074     rsync_contimeout
2075     symver_asm_label
2076     symver_gnu_asm
2077     vfp_args
2078     xform_asm
2079     xmm_clobbers
2080 "
2081
2082 TYPES_LIST="
2083     CONDITION_VARIABLE_Ptr
2084     kCMVideoCodecType_HEVC
2085     socklen_t
2086     struct_addrinfo
2087     struct_group_source_req
2088     struct_ip_mreq_source
2089     struct_ipv6_mreq
2090     struct_msghdr_msg_flags
2091     struct_pollfd
2092     struct_rusage_ru_maxrss
2093     struct_sctp_event_subscribe
2094     struct_sockaddr_in6
2095     struct_sockaddr_sa_len
2096     struct_sockaddr_storage
2097     struct_stat_st_mtim_tv_nsec
2098     struct_v4l2_frmivalenum_discrete
2099 "
2100
2101 HAVE_LIST="
2102     $ARCH_EXT_LIST
2103     $(add_suffix _external $ARCH_EXT_LIST)
2104     $(add_suffix _inline   $ARCH_EXT_LIST)
2105     $ARCH_FEATURES
2106     $ATOMICS_LIST
2107     $BUILTIN_LIST
2108     $COMPLEX_FUNCS
2109     $HAVE_LIST_CMDLINE
2110     $HAVE_LIST_PUB
2111     $HEADERS_LIST
2112     $INTRINSICS_LIST
2113     $MATH_FUNCS
2114     $SYSTEM_FEATURES
2115     $SYSTEM_FUNCS
2116     $SYSTEM_LIBRARIES
2117     $THREADS_LIST
2118     $TOOLCHAIN_FEATURES
2119     $TYPES_LIST
2120     makeinfo
2121     makeinfo_html
2122     perl
2123     pod2man
2124     texi2html
2125 "
2126
2127 # options emitted with CONFIG_ prefix but not available on the command line
2128 CONFIG_EXTRA="
2129     aandcttables
2130     ac3dsp
2131     adts_header
2132     audio_frame_queue
2133     audiodsp
2134     blockdsp
2135     bswapdsp
2136     cabac
2137     cbs
2138     cbs_h264
2139     cbs_h265
2140     cbs_mpeg2
2141     dirac_parse
2142     dvprofile
2143     exif
2144     faandct
2145     faanidct
2146     fdctdsp
2147     flacdsp
2148     fmtconvert
2149     frame_thread_encoder
2150     g722dsp
2151     golomb
2152     gplv3
2153     h263dsp
2154     h264chroma
2155     h264dsp
2156     h264parse
2157     h264pred
2158     h264qpel
2159     hevcparse
2160     hpeldsp
2161     huffman
2162     huffyuvdsp
2163     huffyuvencdsp
2164     idctdsp
2165     iirfilter
2166     mdct15
2167     intrax8
2168     iso_media
2169     ividsp
2170     jpegtables
2171     lgplv3
2172     libx262
2173     llauddsp
2174     llviddsp
2175     llvidencdsp
2176     lpc
2177     lzf
2178     me_cmp
2179     mpeg_er
2180     mpegaudio
2181     mpegaudiodsp
2182     mpegaudioheader
2183     mpegvideo
2184     mpegvideoenc
2185     mss34dsp
2186     pixblockdsp
2187     qpeldsp
2188     qsv
2189     qsvdec
2190     qsvenc
2191     qsvvpp
2192     rangecoder
2193     riffdec
2194     riffenc
2195     rtpdec
2196     rtpenc_chain
2197     rv34dsp
2198     sinewin
2199     snappy
2200     srtp
2201     startcode
2202     texturedsp
2203     texturedspenc
2204     tpeldsp
2205     vaapi_1
2206     vaapi_encode
2207     vc1dsp
2208     videodsp
2209     vp3dsp
2210     vp56dsp
2211     vp8dsp
2212     wma_freqs
2213     wmv2dsp
2214 "
2215
2216 CMDLINE_SELECT="
2217     $ARCH_EXT_LIST
2218     $CONFIG_LIST
2219     $HAVE_LIST_CMDLINE
2220     $THREADS_LIST
2221     asm
2222     cross_compile
2223     debug
2224     extra_warnings
2225     logging
2226     lto
2227     optimizations
2228     rpath
2229     stripping
2230 "
2231
2232 PATHS_LIST="
2233     bindir
2234     datadir
2235     docdir
2236     incdir
2237     libdir
2238     mandir
2239     pkgconfigdir
2240     prefix
2241     shlibdir
2242     install_name_dir
2243 "
2244
2245 CMDLINE_SET="
2246     $PATHS_LIST
2247     ar
2248     arch
2249     as
2250     assert_level
2251     build_suffix
2252     cc
2253     objcc
2254     cpu
2255     cross_prefix
2256     custom_allocator
2257     cxx
2258     dep_cc
2259     doxygen
2260     env
2261     extra_version
2262     gas
2263     host_cc
2264     host_cflags
2265     host_extralibs
2266     host_ld
2267     host_ldflags
2268     host_os
2269     ignore_tests
2270     install
2271     ld
2272     ln_s
2273     logfile
2274     malloc_prefix
2275     nm
2276     optflags
2277     nvccflags
2278     pkg_config
2279     pkg_config_flags
2280     progs_suffix
2281     random_seed
2282     ranlib
2283     samples
2284     strip
2285     sws_max_filter_size
2286     sysinclude
2287     sysroot
2288     target_exec
2289     target_os
2290     target_path
2291     target_samples
2292     tempprefix
2293     toolchain
2294     valgrind
2295     x86asmexe
2296 "
2297
2298 CMDLINE_APPEND="
2299     extra_cflags
2300     extra_cxxflags
2301     extra_objcflags
2302     host_cppflags
2303 "
2304
2305 # code dependency declarations
2306
2307 # architecture extensions
2308
2309 armv5te_deps="arm"
2310 armv6_deps="arm"
2311 armv6t2_deps="arm"
2312 armv8_deps="aarch64"
2313 neon_deps_any="aarch64 arm"
2314 intrinsics_neon_deps="neon"
2315 vfp_deps_any="aarch64 arm"
2316 vfpv3_deps="vfp"
2317 setend_deps="arm"
2318
2319 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2320
2321 altivec_deps="ppc"
2322 dcbzl_deps="ppc"
2323 ldbrx_deps="ppc"
2324 ppc4xx_deps="ppc"
2325 vsx_deps="altivec"
2326 power8_deps="vsx"
2327
2328 loongson2_deps="mips"
2329 loongson3_deps="mips"
2330 mips32r2_deps="mips"
2331 mips32r5_deps="mips"
2332 mips32r6_deps="mips"
2333 mips64r2_deps="mips"
2334 mips64r6_deps="mips"
2335 mipsfpu_deps="mips"
2336 mipsdsp_deps="mips"
2337 mipsdspr2_deps="mips"
2338 mmi_deps="mips"
2339 msa_deps="mipsfpu"
2340
2341 cpunop_deps="i686"
2342 x86_64_select="i686"
2343 x86_64_suggest="fast_cmov"
2344
2345 amd3dnow_deps="mmx"
2346 amd3dnowext_deps="amd3dnow"
2347 i686_deps="x86"
2348 mmx_deps="x86"
2349 mmxext_deps="mmx"
2350 sse_deps="mmxext"
2351 sse2_deps="sse"
2352 sse3_deps="sse2"
2353 ssse3_deps="sse3"
2354 sse4_deps="ssse3"
2355 sse42_deps="sse4"
2356 aesni_deps="sse42"
2357 avx_deps="sse42"
2358 xop_deps="avx"
2359 fma3_deps="avx"
2360 fma4_deps="avx"
2361 avx2_deps="avx"
2362
2363 mmx_external_deps="x86asm"
2364 mmx_inline_deps="inline_asm x86"
2365 mmx_suggest="mmx_external mmx_inline"
2366
2367 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2368     eval dep=\$${ext}_deps
2369     eval ${ext}_external_deps='"${dep}_external"'
2370     eval ${ext}_inline_deps='"${dep}_inline"'
2371     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2372 done
2373
2374 aligned_stack_if_any="aarch64 ppc x86"
2375 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2376 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2377 fast_unaligned_if_any="aarch64 ppc x86"
2378 simd_align_16_if_any="altivec neon sse"
2379 simd_align_32_if_any="avx"
2380
2381 # system capabilities
2382 symver_if_any="symver_asm_label symver_gnu_asm"
2383 valgrind_backtrace_conflict="optimizations"
2384 valgrind_backtrace_deps="valgrind_valgrind_h"
2385
2386 # threading support
2387 atomics_gcc_if="sync_val_compare_and_swap"
2388 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2389 atomics_win32_if="MemoryBarrier"
2390 atomics_native_if_any="$ATOMICS_LIST"
2391 w32threads_deps="atomics_native"
2392 threads_if_any="$THREADS_LIST"
2393
2394 # subsystems
2395 cbs_h264_select="cbs golomb"
2396 cbs_h265_select="cbs golomb"
2397 cbs_mpeg2_select="cbs"
2398 dct_select="rdft"
2399 dirac_parse_select="golomb"
2400 error_resilience_select="me_cmp"
2401 faandct_deps="faan"
2402 faandct_select="fdctdsp"
2403 faanidct_deps="faan"
2404 faanidct_select="idctdsp"
2405 h264dsp_select="startcode"
2406 hevcparse_select="golomb"
2407 frame_thread_encoder_deps="encoders threads"
2408 intrax8_select="blockdsp idctdsp"
2409 mdct_select="fft"
2410 mdct15_select="fft"
2411 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2412 mpeg_er_select="error_resilience"
2413 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2414 mpegaudiodsp_select="dct"
2415 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2416 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2417 vc1dsp_select="h264chroma qpeldsp startcode"
2418 rdft_select="fft"
2419
2420 # decoders / encoders
2421 aac_decoder_select="adts_header mdct15 mdct sinewin"
2422 aac_fixed_decoder_select="mdct sinewin"
2423 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2424 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2425 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2426 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2427 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2428 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2429 adpcm_g722_decoder_select="g722dsp"
2430 adpcm_g722_encoder_select="g722dsp"
2431 aic_decoder_select="golomb idctdsp"
2432 alac_encoder_select="lpc"
2433 als_decoder_select="bswapdsp"
2434 amrnb_decoder_select="lsp"
2435 amrwb_decoder_select="lsp"
2436 amv_decoder_select="sp5x_decoder exif"
2437 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2438 ape_decoder_select="bswapdsp llauddsp"
2439 apng_decoder_select="zlib"
2440 apng_encoder_select="llvidencdsp zlib"
2441 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2442 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2443 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2444 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2445 atrac1_decoder_select="mdct sinewin"
2446 atrac3_decoder_select="mdct"
2447 atrac3p_decoder_select="mdct sinewin"
2448 avrn_decoder_select="exif jpegtables"
2449 bink_decoder_select="blockdsp hpeldsp"
2450 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2451 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2452 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2453 clearvideo_decoder_select="idctdsp"
2454 cllc_decoder_select="bswapdsp"
2455 comfortnoise_encoder_select="lpc"
2456 cook_decoder_select="audiodsp mdct sinewin"
2457 cscd_decoder_select="lzo"
2458 cscd_decoder_suggest="zlib"
2459 dca_decoder_select="mdct"
2460 dds_decoder_select="texturedsp"
2461 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2462 dnxhd_decoder_select="blockdsp idctdsp"
2463 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2464 dolby_e_decoder_select="mdct"
2465 dvvideo_decoder_select="dvprofile idctdsp"
2466 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2467 dxa_decoder_select="zlib"
2468 dxv_decoder_select="lzf texturedsp"
2469 eac3_decoder_select="ac3_decoder"
2470 eac3_encoder_select="ac3_encoder"
2471 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2472 eatgq_decoder_select="aandcttables"
2473 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2474 exr_decoder_select="zlib"
2475 ffv1_decoder_select="rangecoder"
2476 ffv1_encoder_select="rangecoder"
2477 ffvhuff_decoder_select="huffyuv_decoder"
2478 ffvhuff_encoder_select="huffyuv_encoder"
2479 fic_decoder_select="golomb"
2480 flac_decoder_select="flacdsp"
2481 flac_encoder_select="bswapdsp flacdsp lpc"
2482 flashsv2_decoder_select="zlib"
2483 flashsv2_encoder_select="zlib"
2484 flashsv_decoder_select="zlib"
2485 flashsv_encoder_select="zlib"
2486 flv_decoder_select="h263_decoder"
2487 flv_encoder_select="h263_encoder"
2488 fourxm_decoder_select="blockdsp bswapdsp"
2489 fraps_decoder_select="bswapdsp huffman"
2490 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2491 g729_decoder_select="audiodsp"
2492 h261_decoder_select="mpegvideo"
2493 h261_encoder_select="aandcttables mpegvideoenc"
2494 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2495 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2496 h263i_decoder_select="h263_decoder"
2497 h263p_decoder_select="h263_decoder"
2498 h263p_encoder_select="h263_encoder"
2499 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2500 h264_decoder_suggest="error_resilience"
2501 hap_decoder_select="snappy texturedsp"
2502 hap_encoder_deps="libsnappy"
2503 hap_encoder_select="texturedspenc"
2504 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2505 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2506 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2507 iac_decoder_select="imc_decoder"
2508 imc_decoder_select="bswapdsp fft mdct sinewin"
2509 indeo3_decoder_select="hpeldsp"
2510 indeo4_decoder_select="ividsp"
2511 indeo5_decoder_select="ividsp"
2512 interplay_video_decoder_select="hpeldsp"
2513 jpegls_decoder_select="mjpeg_decoder"
2514 jv_decoder_select="blockdsp"
2515 lagarith_decoder_select="llviddsp"
2516 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2517 magicyuv_decoder_select="llviddsp"
2518 magicyuv_encoder_select="llvidencdsp"
2519 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2520 metasound_decoder_select="lsp mdct sinewin"
2521 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2522 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2523 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2524 mjpegb_decoder_select="mjpeg_decoder"
2525 mlp_decoder_select="mlp_parser"
2526 mlp_encoder_select="lpc"
2527 motionpixels_decoder_select="bswapdsp"
2528 mp1_decoder_select="mpegaudio"
2529 mp1float_decoder_select="mpegaudio"
2530 mp2_decoder_select="mpegaudio"
2531 mp2float_decoder_select="mpegaudio"
2532 mp3_decoder_select="mpegaudio"
2533 mp3adu_decoder_select="mpegaudio"
2534 mp3adufloat_decoder_select="mpegaudio"
2535 mp3float_decoder_select="mpegaudio"
2536 mp3on4_decoder_select="mpegaudio"
2537 mp3on4float_decoder_select="mpegaudio"
2538 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2539 mpc8_decoder_select="mpegaudiodsp"
2540 mpegvideo_decoder_select="mpegvideo"
2541 mpeg1video_decoder_select="mpegvideo"
2542 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2543 mpeg2video_decoder_select="mpegvideo"
2544 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2545 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2546 mpeg4_encoder_select="h263_encoder"
2547 msa1_decoder_select="mss34dsp"
2548 mscc_decoder_select="zlib"
2549 msmpeg4v1_decoder_select="h263_decoder"
2550 msmpeg4v2_decoder_select="h263_decoder"
2551 msmpeg4v2_encoder_select="h263_encoder"
2552 msmpeg4v3_decoder_select="h263_decoder"
2553 msmpeg4v3_encoder_select="h263_encoder"
2554 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2555 mts2_decoder_select="mss34dsp"
2556 mxpeg_decoder_select="mjpeg_decoder"
2557 nellymoser_decoder_select="mdct sinewin"
2558 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2559 nuv_decoder_select="idctdsp lzo"
2560 on2avc_decoder_select="mdct"
2561 opus_decoder_deps="swresample"
2562 opus_decoder_select="mdct15"
2563 opus_encoder_select="audio_frame_queue mdct15"
2564 png_decoder_select="zlib"
2565 png_encoder_select="llvidencdsp zlib"
2566 prores_decoder_select="blockdsp idctdsp"
2567 prores_encoder_select="fdctdsp"
2568 qcelp_decoder_select="lsp"
2569 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2570 ra_144_decoder_select="audiodsp"
2571 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2572 ralf_decoder_select="golomb"
2573 rawvideo_decoder_select="bswapdsp"
2574 rscc_decoder_select="zlib"
2575 rtjpeg_decoder_select="me_cmp"
2576 rv10_decoder_select="h263_decoder"
2577 rv10_encoder_select="h263_encoder"
2578 rv20_decoder_select="h263_decoder"
2579 rv20_encoder_select="h263_encoder"
2580 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2581 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2582 screenpresso_decoder_select="zlib"
2583 shorten_decoder_select="bswapdsp"
2584 sipr_decoder_select="lsp"
2585 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2586 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2587 sonic_decoder_select="golomb rangecoder"
2588 sonic_encoder_select="golomb rangecoder"
2589 sonic_ls_encoder_select="golomb rangecoder"
2590 sp5x_decoder_select="mjpeg_decoder"
2591 srgc_decoder_select="zlib"
2592 svq1_decoder_select="hpeldsp"
2593 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2594 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2595 svq3_decoder_suggest="zlib"
2596 tak_decoder_select="audiodsp"
2597 tdsc_decoder_select="zlib mjpeg_decoder"
2598 theora_decoder_select="vp3_decoder"
2599 thp_decoder_select="mjpeg_decoder"
2600 tiff_decoder_suggest="zlib lzma"
2601 tiff_encoder_suggest="zlib"
2602 truehd_decoder_select="mlp_parser"
2603 truehd_encoder_select="lpc"
2604 truemotion2_decoder_select="bswapdsp"
2605 truespeech_decoder_select="bswapdsp"
2606 tscc_decoder_select="zlib"
2607 twinvq_decoder_select="mdct lsp sinewin"
2608 txd_decoder_select="texturedsp"
2609 utvideo_decoder_select="bswapdsp llviddsp"
2610 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2611 vble_decoder_select="llviddsp"
2612 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2613 vc1image_decoder_select="vc1_decoder"
2614 vorbis_decoder_select="mdct"
2615 vorbis_encoder_select="mdct"
2616 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2617 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2618 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2619 vp6a_decoder_select="vp6_decoder"
2620 vp6f_decoder_select="vp6_decoder"
2621 vp7_decoder_select="h264pred videodsp vp8dsp"
2622 vp8_decoder_select="h264pred videodsp vp8dsp"
2623 vp9_decoder_select="videodsp vp9_parser"
2624 webp_decoder_select="vp8_decoder exif"
2625 wmalossless_decoder_select="llauddsp"
2626 wmapro_decoder_select="mdct sinewin wma_freqs"
2627 wmav1_decoder_select="mdct sinewin wma_freqs"
2628 wmav1_encoder_select="mdct sinewin wma_freqs"
2629 wmav2_decoder_select="mdct sinewin wma_freqs"
2630 wmav2_encoder_select="mdct sinewin wma_freqs"
2631 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2632 wmv1_decoder_select="h263_decoder"
2633 wmv1_encoder_select="h263_encoder"
2634 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2635 wmv2_encoder_select="h263_encoder wmv2dsp"
2636 wmv3_decoder_select="vc1_decoder"
2637 wmv3image_decoder_select="wmv3_decoder"
2638 xma1_decoder_select="wmapro_decoder"
2639 xma2_decoder_select="wmapro_decoder"
2640 zerocodec_decoder_select="zlib"
2641 zlib_decoder_select="zlib"
2642 zlib_encoder_select="zlib"
2643 zmbv_decoder_select="zlib"
2644 zmbv_encoder_select="zlib"
2645
2646 # hardware accelerators
2647 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2648 cuda_deps_any="libdl LoadLibrary"
2649 cuvid_deps="cuda"
2650 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2651 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2652 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2653 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2654 xvmc_deps="X11_extensions_XvMClib_h"
2655
2656 h263_vaapi_hwaccel_deps="vaapi"
2657 h263_vaapi_hwaccel_select="h263_decoder"
2658 h263_videotoolbox_hwaccel_deps="videotoolbox"
2659 h263_videotoolbox_hwaccel_select="h263_decoder"
2660 h264_cuvid_hwaccel_deps="cuda cuvid"
2661 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2662 h264_d3d11va_hwaccel_deps="d3d11va"
2663 h264_d3d11va_hwaccel_select="h264_decoder"
2664 h264_d3d11va2_hwaccel_deps="d3d11va"
2665 h264_d3d11va2_hwaccel_select="h264_decoder"
2666 h264_dxva2_hwaccel_deps="dxva2"
2667 h264_dxva2_hwaccel_select="h264_decoder"
2668 h264_mediacodec_hwaccel_deps="mediacodec"
2669 h264_mmal_hwaccel_deps="mmal"
2670 h264_nvdec_hwaccel_deps="cuda nvdec"
2671 h264_nvdec_hwaccel_select="h264_decoder"
2672 h264_qsv_hwaccel_deps="libmfx"
2673 h264_vaapi_hwaccel_deps="vaapi"
2674 h264_vaapi_hwaccel_select="h264_decoder"
2675 h264_vdpau_hwaccel_deps="vdpau"
2676 h264_vdpau_hwaccel_select="h264_decoder"
2677 h264_videotoolbox_hwaccel_deps="videotoolbox"
2678 h264_videotoolbox_hwaccel_select="h264_decoder"
2679 hevc_cuvid_hwaccel_deps="cuda cuvid"
2680 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2681 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2682 hevc_d3d11va_hwaccel_select="hevc_decoder"
2683 hevc_mediacodec_hwaccel_deps="mediacodec"
2684 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2685 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2686 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2687 hevc_dxva2_hwaccel_select="hevc_decoder"
2688 hevc_nvdec_hwaccel_deps="cuda nvdec"
2689 hevc_nvdec_hwaccel_select="hevc_decoder"
2690 hevc_qsv_hwaccel_deps="libmfx"
2691 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2692 hevc_vaapi_hwaccel_select="hevc_decoder"
2693 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2694 hevc_vdpau_hwaccel_select="hevc_decoder"
2695 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2696 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2697 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2698 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2699 mpeg_xvmc_hwaccel_deps="xvmc"
2700 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2701 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2702 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2703 mpeg1_vdpau_hwaccel_deps="vdpau"
2704 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2705 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2706 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2707 mpeg1_xvmc_hwaccel_deps="xvmc"
2708 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2709 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2710 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2711 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2712 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2713 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2714 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2715 mpeg2_dxva2_hwaccel_deps="dxva2"
2716 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2717 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2718 mpeg2_mmal_hwaccel_deps="mmal"
2719 mpeg2_qsv_hwaccel_deps="libmfx"
2720 mpeg2_vaapi_hwaccel_deps="vaapi"
2721 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2722 mpeg2_vdpau_hwaccel_deps="vdpau"
2723 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2724 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2725 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_xvmc_hwaccel_deps="xvmc"
2727 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2728 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2729 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2730 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2731 mpeg4_mmal_hwaccel_deps="mmal"
2732 mpeg4_vaapi_hwaccel_deps="vaapi"
2733 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2734 mpeg4_vdpau_hwaccel_deps="vdpau"
2735 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2736 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2737 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2738 vc1_cuvid_hwaccel_deps="cuda cuvid"
2739 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2740 vc1_d3d11va_hwaccel_deps="d3d11va"
2741 vc1_d3d11va_hwaccel_select="vc1_decoder"
2742 vc1_d3d11va2_hwaccel_deps="d3d11va"
2743 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2744 vc1_dxva2_hwaccel_deps="dxva2"
2745 vc1_dxva2_hwaccel_select="vc1_decoder"
2746 vc1_mmal_hwaccel_deps="mmal"
2747 vc1_qsv_hwaccel_deps="libmfx"
2748 vc1_vaapi_hwaccel_deps="vaapi"
2749 vc1_vaapi_hwaccel_select="vc1_decoder"
2750 vc1_vdpau_hwaccel_deps="vdpau"
2751 vc1_vdpau_hwaccel_select="vc1_decoder"
2752 vp8_cuvid_hwaccel_deps="cuda cuvid"
2753 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2754 vp9_cuvid_hwaccel_deps="cuda cuvid"
2755 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2756 vp8_mediacodec_hwaccel_deps="mediacodec"
2757 vp8_qsv_hwaccel_deps="libmfx"
2758 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2759 vp9_d3d11va_hwaccel_select="vp9_decoder"
2760 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2761 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2762 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2763 vp9_dxva2_hwaccel_select="vp9_decoder"
2764 vp9_mediacodec_hwaccel_deps="mediacodec"
2765 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2766 vp9_vaapi_hwaccel_select="vp9_decoder"
2767 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2768 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2769 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2770 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2771 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2772
2773 # hardware-accelerated codecs
2774 omx_deps="libdl pthreads"
2775 omx_rpi_select="omx"
2776 qsv_deps="libmfx"
2777 qsvdec_select="qsv"
2778 qsvenc_select="qsv"
2779 qsvvpp_select="qsv"
2780 vaapi_encode_deps="vaapi"
2781 v4l2_m2m_deps_any="linux_videodev2_h"
2782
2783 hwupload_cuda_filter_deps="cuda"
2784 scale_npp_filter_deps="cuda libnpp"
2785 scale_cuda_filter_deps="cuda_sdk"
2786 thumbnail_cuda_filter_deps="cuda_sdk"
2787
2788 nvenc_deps="cuda"
2789 nvenc_deps_any="libdl LoadLibrary"
2790 nvenc_encoder_deps="nvenc"
2791
2792 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2793 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2794 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2795 h264_cuvid_decoder_deps="cuda cuvid"
2796 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2797 h264_mediacodec_decoder_deps="mediacodec"
2798 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2799 h264_mmal_decoder_deps="mmal"
2800 h264_nvenc_encoder_deps="nvenc"
2801 h264_omx_encoder_deps="omx"
2802 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2803 h264_qsv_encoder_select="qsvenc"
2804 h264_rkmpp_decoder_deps="rkmpp"
2805 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2806 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2807 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2808 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2809 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2810 hevc_cuvid_decoder_deps="cuda cuvid"
2811 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2812 hevc_mediacodec_decoder_deps="mediacodec"
2813 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2814 hevc_nvenc_encoder_deps="nvenc"
2815 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2816 hevc_qsv_encoder_select="hevcparse qsvenc"
2817 hevc_rkmpp_decoder_deps="rkmpp"
2818 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2819 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2820 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2821 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2822 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2823 mjpeg_cuvid_decoder_deps="cuda cuvid"
2824 mjpeg_qsv_encoder_deps="libmfx"
2825 mjpeg_qsv_encoder_select="qsvenc"
2826 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2827 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2828 mpeg1_cuvid_decoder_deps="cuda cuvid"
2829 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2830 mpeg2_crystalhd_decoder_select="crystalhd"
2831 mpeg2_cuvid_decoder_deps="cuda cuvid"
2832 mpeg2_mmal_decoder_deps="mmal"
2833 mpeg2_mediacodec_decoder_deps="mediacodec"
2834 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2835 mpeg2_qsv_encoder_select="qsvenc"
2836 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2837 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2838 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2839 mpeg4_crystalhd_decoder_select="crystalhd"
2840 mpeg4_cuvid_decoder_deps="cuda cuvid"
2841 mpeg4_mediacodec_decoder_deps="mediacodec"
2842 mpeg4_mmal_decoder_deps="mmal"
2843 mpeg4_omx_encoder_deps="omx"
2844 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2845 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2846 msmpeg4_crystalhd_decoder_select="crystalhd"
2847 nvenc_h264_encoder_select="h264_nvenc_encoder"
2848 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2849 vc1_crystalhd_decoder_select="crystalhd"
2850 vc1_cuvid_decoder_deps="cuda cuvid"
2851 vc1_mmal_decoder_deps="mmal"
2852 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2853 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2854 vp8_cuvid_decoder_deps="cuda cuvid"
2855 vp8_mediacodec_decoder_deps="mediacodec"
2856 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2857 vp8_rkmpp_decoder_deps="rkmpp"
2858 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2859 vp8_vaapi_encoder_select="vaapi_encode"
2860 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2861 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2862 vp9_cuvid_decoder_deps="cuda cuvid"
2863 vp9_mediacodec_decoder_deps="mediacodec"
2864 vp9_rkmpp_decoder_deps="rkmpp"
2865 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2866 vp9_vaapi_encoder_select="vaapi_encode"
2867 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2868 wmv3_crystalhd_decoder_select="crystalhd"
2869
2870 # parsers
2871 aac_parser_select="adts_header"
2872 h264_parser_select="golomb h264dsp h264parse"
2873 hevc_parser_select="hevcparse"
2874 mpegaudio_parser_select="mpegaudioheader"
2875 mpegvideo_parser_select="mpegvideo"
2876 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2877 vc1_parser_select="vc1dsp"
2878
2879 # bitstream_filters
2880 aac_adtstoasc_bsf_select="adts_header"
2881 h264_metadata_bsf_select="cbs_h264"
2882 h264_redundant_pps_bsf_select="cbs_h264"
2883 hevc_metadata_bsf_select="cbs_h265"
2884 mjpeg2jpeg_bsf_select="jpegtables"
2885 mpeg2_metadata_bsf_select="cbs_mpeg2"
2886 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2887
2888 # external libraries
2889 aac_at_decoder_deps="audiotoolbox"
2890 ac3_at_decoder_deps="audiotoolbox"
2891 ac3_at_decoder_select="ac3_parser"
2892 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2893 alac_at_decoder_deps="audiotoolbox"
2894 amr_nb_at_decoder_deps="audiotoolbox"
2895 avisynth_deps_any="libdl LoadLibrary"
2896 avisynth_demuxer_deps="avisynth"
2897 avisynth_demuxer_select="riffdec"
2898 eac3_at_decoder_deps="audiotoolbox"
2899 eac3_at_decoder_select="ac3_parser"
2900 gsm_ms_at_decoder_deps="audiotoolbox"
2901 ilbc_at_decoder_deps="audiotoolbox"
2902 mp1_at_decoder_deps="audiotoolbox"
2903 mp2_at_decoder_deps="audiotoolbox"
2904 mp3_at_decoder_deps="audiotoolbox"
2905 mp1_at_decoder_select="mpegaudioheader"
2906 mp2_at_decoder_select="mpegaudioheader"
2907 mp3_at_decoder_select="mpegaudioheader"
2908 pcm_alaw_at_decoder_deps="audiotoolbox"
2909 pcm_mulaw_at_decoder_deps="audiotoolbox"
2910 qdmc_at_decoder_deps="audiotoolbox"
2911 qdm2_at_decoder_deps="audiotoolbox"
2912 aac_at_encoder_deps="audiotoolbox"
2913 aac_at_encoder_select="audio_frame_queue"
2914 alac_at_encoder_deps="audiotoolbox"
2915 alac_at_encoder_select="audio_frame_queue"
2916 ilbc_at_encoder_deps="audiotoolbox"
2917 ilbc_at_encoder_select="audio_frame_queue"
2918 pcm_alaw_at_encoder_deps="audiotoolbox"
2919 pcm_alaw_at_encoder_select="audio_frame_queue"
2920 pcm_mulaw_at_encoder_deps="audiotoolbox"
2921 pcm_mulaw_at_encoder_select="audio_frame_queue"
2922 chromaprint_muxer_deps="chromaprint"
2923 h264_videotoolbox_encoder_deps="pthreads"
2924 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2925 libcelt_decoder_deps="libcelt"
2926 libfdk_aac_decoder_deps="libfdk_aac"
2927 libfdk_aac_encoder_deps="libfdk_aac"
2928 libfdk_aac_encoder_select="audio_frame_queue"
2929 libgme_demuxer_deps="libgme"
2930 libgsm_decoder_deps="libgsm"
2931 libgsm_encoder_deps="libgsm"
2932 libgsm_ms_decoder_deps="libgsm"
2933 libgsm_ms_encoder_deps="libgsm"
2934 libilbc_decoder_deps="libilbc"
2935 libilbc_encoder_deps="libilbc"
2936 libkvazaar_encoder_deps="libkvazaar"
2937 libmodplug_demuxer_deps="libmodplug"
2938 libmp3lame_encoder_deps="libmp3lame"
2939 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2940 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2941 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2942 libopencore_amrnb_encoder_select="audio_frame_queue"
2943 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2944 libopenh264_decoder_deps="libopenh264"
2945 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2946 libopenh264_encoder_deps="libopenh264"
2947 libopenjpeg_decoder_deps="libopenjpeg"
2948 libopenjpeg_encoder_deps="libopenjpeg"
2949 libopenmpt_demuxer_deps="libopenmpt"
2950 libopus_decoder_deps="libopus"
2951 libopus_encoder_deps="libopus"
2952 libopus_encoder_select="audio_frame_queue"
2953 librsvg_decoder_deps="librsvg"
2954 libshine_encoder_deps="libshine"
2955 libshine_encoder_select="audio_frame_queue"
2956 libspeex_decoder_deps="libspeex"
2957 libspeex_encoder_deps="libspeex"
2958 libspeex_encoder_select="audio_frame_queue"
2959 libtheora_encoder_deps="libtheora"
2960 libtwolame_encoder_deps="libtwolame"
2961 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2962 libvorbis_decoder_deps="libvorbis"
2963 libvorbis_encoder_deps="libvorbis libvorbisenc"
2964 libvorbis_encoder_select="audio_frame_queue"
2965 libvpx_vp8_decoder_deps="libvpx"
2966 libvpx_vp8_encoder_deps="libvpx"
2967 libvpx_vp9_decoder_deps="libvpx"
2968 libvpx_vp9_encoder_deps="libvpx"
2969 libwavpack_encoder_deps="libwavpack"
2970 libwavpack_encoder_select="audio_frame_queue"
2971 libwebp_encoder_deps="libwebp"
2972 libwebp_anim_encoder_deps="libwebp"
2973 libx262_encoder_deps="libx262"
2974 libx264_encoder_deps="libx264"
2975 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2976 libx264rgb_encoder_select="libx264_encoder"
2977 libx265_encoder_deps="libx265"
2978 libxavs_encoder_deps="libxavs"
2979 libxvid_encoder_deps="libxvid"
2980 libzvbi_teletext_decoder_deps="libzvbi"
2981 videotoolbox_suggest="coreservices"
2982 videotoolbox_deps="corefoundation coremedia corevideo"
2983 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2984
2985 # demuxers / muxers
2986 ac3_demuxer_select="ac3_parser"
2987 aiff_muxer_select="iso_media"
2988 asf_demuxer_select="riffdec"
2989 asf_o_demuxer_select="riffdec"
2990 asf_muxer_select="riffenc"
2991 asf_stream_muxer_select="asf_muxer"
2992 avi_demuxer_select="iso_media riffdec exif"
2993 avi_muxer_select="riffenc"
2994 caf_demuxer_select="iso_media riffdec"
2995 caf_muxer_select="iso_media"
2996 dash_muxer_select="mp4_muxer"
2997 dash_demuxer_deps="libxml2"
2998 dirac_demuxer_select="dirac_parser"
2999 dts_demuxer_select="dca_parser"
3000 dtshd_demuxer_select="dca_parser"
3001 dv_demuxer_select="dvprofile"
3002 dv_muxer_select="dvprofile"
3003 dxa_demuxer_select="riffdec"
3004 eac3_demuxer_select="ac3_parser"
3005 f4v_muxer_select="mov_muxer"
3006 fifo_muxer_deps="threads"
3007 flac_demuxer_select="flac_parser"
3008 hds_muxer_select="flv_muxer"
3009 hls_muxer_select="mpegts_muxer"
3010 hls_muxer_suggest="gcrypt openssl"
3011 image2_alias_pix_demuxer_select="image2_demuxer"
3012 image2_brender_pix_demuxer_select="image2_demuxer"
3013 ipod_muxer_select="mov_muxer"
3014 ismv_muxer_select="mov_muxer"
3015 matroska_audio_muxer_select="matroska_muxer"
3016 matroska_demuxer_select="iso_media riffdec"
3017 matroska_demuxer_suggest="bzlib lzo zlib"
3018 matroska_muxer_select="iso_media riffenc"
3019 mmf_muxer_select="riffenc"
3020 mov_demuxer_select="iso_media riffdec"
3021 mov_demuxer_suggest="zlib"
3022 mov_muxer_select="iso_media riffenc rtpenc_chain"
3023 mp3_demuxer_select="mpegaudio_parser"
3024 mp3_muxer_select="mpegaudioheader"
3025 mp4_muxer_select="mov_muxer"
3026 mpegts_demuxer_select="iso_media"
3027 mpegts_muxer_select="adts_muxer latm_muxer"
3028 mpegtsraw_demuxer_select="mpegts_demuxer"
3029 mxf_d10_muxer_select="mxf_muxer"
3030 mxf_opatom_muxer_select="mxf_muxer"
3031 nut_muxer_select="riffenc"
3032 nuv_demuxer_select="riffdec"
3033 oga_muxer_select="ogg_muxer"
3034 ogg_demuxer_select="dirac_parse"
3035 ogv_muxer_select="ogg_muxer"
3036 opus_muxer_select="ogg_muxer"
3037 psp_muxer_select="mov_muxer"
3038 rtp_demuxer_select="sdp_demuxer"
3039 rtp_muxer_select="golomb"
3040 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3041 rtsp_demuxer_select="http_protocol rtpdec"
3042 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3043 sap_demuxer_select="sdp_demuxer"
3044 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3045 sdp_demuxer_select="rtpdec"
3046 smoothstreaming_muxer_select="ismv_muxer"
3047 spdif_demuxer_select="adts_header"
3048 spdif_muxer_select="adts_header"
3049 spx_muxer_select="ogg_muxer"
3050 swf_demuxer_suggest="zlib"
3051 tak_demuxer_select="tak_parser"
3052 tg2_muxer_select="mov_muxer"
3053 tgp_muxer_select="mov_muxer"
3054 vobsub_demuxer_select="mpegps_demuxer"
3055 w64_demuxer_select="wav_demuxer"
3056 w64_muxer_select="wav_muxer"
3057 wav_demuxer_select="riffdec"
3058 wav_muxer_select="riffenc"
3059 webm_muxer_select="iso_media riffenc"
3060 webm_dash_manifest_demuxer_select="matroska_demuxer"
3061 wtv_demuxer_select="mpegts_demuxer riffdec"
3062 wtv_muxer_select="mpegts_muxer riffenc"
3063 xmv_demuxer_select="riffdec"
3064 xwma_demuxer_select="riffdec"
3065
3066 # indevs / outdevs
3067 alsa_indev_deps="alsa"
3068 alsa_outdev_deps="alsa"
3069 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3070 avfoundation_indev_suggest="coregraphics applicationservices"
3071 avfoundation_indev_extralibs="-framework Foundation"
3072 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3073 caca_outdev_deps="libcaca"
3074 decklink_deps_any="libdl LoadLibrary"
3075 decklink_indev_deps="decklink threads"
3076 decklink_indev_extralibs="-lstdc++"
3077 decklink_outdev_deps="decklink threads"
3078 decklink_outdev_extralibs="-lstdc++"
3079 libndi_newtek_indev_deps="libndi_newtek"
3080 libndi_newtek_indev_extralibs="-lndi"
3081 libndi_newtek_outdev_deps="libndi_newtek"
3082 libndi_newtek_outdev_extralibs="-lndi"
3083 dshow_indev_deps="IBaseFilter"
3084 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3085 fbdev_indev_deps="linux_fb_h"
3086 fbdev_outdev_deps="linux_fb_h"
3087 gdigrab_indev_deps="CreateDIBSection"
3088 gdigrab_indev_extralibs="-lgdi32"
3089 gdigrab_indev_select="bmp_decoder"
3090 iec61883_indev_deps="libiec61883"
3091 jack_indev_deps="libjack"
3092 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3093 kmsgrab_indev_deps="libdrm"
3094 lavfi_indev_deps="avfilter"
3095 libcdio_indev_deps="libcdio"
3096 libdc1394_indev_deps="libdc1394"
3097 openal_indev_deps="openal"
3098 opengl_outdev_deps="opengl"
3099 oss_indev_deps_any="sys_soundcard_h"
3100 oss_outdev_deps_any="sys_soundcard_h"
3101 pulse_indev_deps="libpulse"
3102 pulse_outdev_deps="libpulse"
3103 sdl2_outdev_deps="sdl2"
3104 sndio_indev_deps="sndio"
3105 sndio_outdev_deps="sndio"
3106 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3107 v4l2_indev_suggest="libv4l2"
3108 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3109 v4l2_outdev_suggest="libv4l2"
3110 vfwcap_indev_deps="vfw32 vfwcap_defines"
3111 xcbgrab_indev_deps="libxcb"
3112 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3113 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3114 xv_outdev_extralibs="-lXv -lX11 -lXext"
3115
3116 # protocols
3117 async_protocol_deps="threads"
3118 bluray_protocol_deps="libbluray"
3119 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3120 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3121 ffrtmpcrypt_protocol_select="tcp_protocol"
3122 ffrtmphttp_protocol_conflict="librtmp_protocol"
3123 ffrtmphttp_protocol_select="http_protocol"
3124 ftp_protocol_select="tcp_protocol"
3125 gopher_protocol_select="network"
3126 http_protocol_select="tcp_protocol"
3127 http_protocol_suggest="zlib"
3128 httpproxy_protocol_select="tcp_protocol"
3129 httpproxy_protocol_suggest="zlib"
3130 https_protocol_select="tls_protocol"
3131 https_protocol_suggest="zlib"
3132 icecast_protocol_select="http_protocol"
3133 librtmp_protocol_deps="librtmp"
3134 librtmpe_protocol_deps="librtmp"
3135 librtmps_protocol_deps="librtmp"
3136 librtmpt_protocol_deps="librtmp"
3137 librtmpte_protocol_deps="librtmp"
3138 libsmbclient_protocol_deps="libsmbclient gplv3"
3139 libssh_protocol_deps="libssh"
3140 mmsh_protocol_select="http_protocol"
3141 mmst_protocol_select="network"
3142 rtmp_protocol_conflict="librtmp_protocol"
3143 rtmp_protocol_select="tcp_protocol"
3144 rtmp_protocol_suggest="zlib"
3145 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3146 rtmpe_protocol_suggest="zlib"
3147 rtmps_protocol_conflict="librtmp_protocol"
3148 rtmps_protocol_select="tls_protocol"
3149 rtmps_protocol_suggest="zlib"
3150 rtmpt_protocol_select="ffrtmphttp_protocol"
3151 rtmpt_protocol_suggest="zlib"
3152 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3153 rtmpte_protocol_suggest="zlib"
3154 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3155 rtmpts_protocol_suggest="zlib"
3156 rtp_protocol_select="udp_protocol"
3157 schannel_conflict="openssl gnutls"
3158 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3159 sctp_protocol_select="network"
3160 securetransport_conflict="openssl gnutls"
3161 srtp_protocol_select="rtp_protocol srtp"
3162 tcp_protocol_select="network"
3163 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3164 tls_protocol_select="tcp_protocol"
3165 udp_protocol_select="network"
3166 udplite_protocol_select="network"
3167 unix_protocol_deps="sys_un_h"
3168 unix_protocol_select="network"
3169
3170 # filters
3171 afftfilt_filter_deps="avcodec"
3172 afftfilt_filter_select="fft"
3173 afir_filter_deps="avcodec"
3174 afir_filter_select="fft"
3175 amovie_filter_deps="avcodec avformat"
3176 aresample_filter_deps="swresample"
3177 ass_filter_deps="libass"
3178 atempo_filter_deps="avcodec"
3179 atempo_filter_select="rdft"
3180 azmq_filter_deps="libzmq"
3181 blackframe_filter_deps="gpl"
3182 boxblur_filter_deps="gpl"
3183 bs2b_filter_deps="libbs2b"
3184 colormatrix_filter_deps="gpl"
3185 coreimage_filter_deps="coreimage appkit"
3186 coreimage_filter_extralibs="-framework OpenGL"
3187 coreimagesrc_filter_deps="coreimage appkit"
3188 coreimagesrc_filter_extralibs="-framework OpenGL"
3189 cover_rect_filter_deps="avcodec avformat gpl"
3190 cropdetect_filter_deps="gpl"
3191 deinterlace_qsv_filter_deps="libmfx"
3192 deinterlace_vaapi_filter_deps="vaapi"
3193 delogo_filter_deps="gpl"
3194 deshake_filter_select="pixelutils"
3195 deshake_filter_suggest="opencl"
3196 drawtext_filter_deps="libfreetype"
3197 drawtext_filter_suggest="libfontconfig libfribidi"
3198 elbg_filter_deps="avcodec"
3199 eq_filter_deps="gpl"
3200 fftfilt_filter_deps="avcodec"
3201 fftfilt_filter_select="rdft"
3202 find_rect_filter_deps="avcodec avformat gpl"
3203 firequalizer_filter_deps="avcodec"
3204 firequalizer_filter_select="rdft"
3205 flite_filter_deps="libflite"
3206 framerate_filter_select="pixelutils"
3207 frei0r_filter_deps="frei0r libdl"
3208 frei0r_src_filter_deps="frei0r libdl"
3209 fspp_filter_deps="gpl"
3210 geq_filter_deps="gpl"
3211 histeq_filter_deps="gpl"
3212 hqdn3d_filter_deps="gpl"
3213 interlace_filter_deps="gpl"
3214 kerndeint_filter_deps="gpl"
3215 ladspa_filter_deps="ladspa libdl"
3216 mcdeint_filter_deps="avcodec gpl"
3217 movie_filter_deps="avcodec avformat"
3218 mpdecimate_filter_deps="gpl"
3219 mpdecimate_filter_select="pixelutils"
3220 mptestsrc_filter_deps="gpl"
3221 negate_filter_deps="lut_filter"
3222 nnedi_filter_deps="gpl"
3223 ocr_filter_deps="libtesseract"
3224 ocv_filter_deps="libopencv"
3225 overlay_qsv_filter_deps="libmfx"
3226 overlay_qsv_filter_select="qsvvpp"
3227 owdenoise_filter_deps="gpl"
3228 pan_filter_deps="swresample"
3229 perspective_filter_deps="gpl"
3230 phase_filter_deps="gpl"
3231 pp7_filter_deps="gpl"
3232 pp_filter_deps="gpl postproc"
3233 pullup_filter_deps="gpl"
3234 removelogo_filter_deps="avcodec avformat swscale"
3235 repeatfields_filter_deps="gpl"
3236 resample_filter_deps="avresample"
3237 rubberband_filter_deps="librubberband"
3238 sab_filter_deps="gpl swscale"
3239 scale2ref_filter_deps="swscale"
3240 scale_filter_deps="swscale"
3241 scale_qsv_filter_deps="libmfx"
3242 select_filter_select="pixelutils"
3243 showcqt_filter_deps="avcodec avformat swscale"
3244 showcqt_filter_suggest="libfontconfig libfreetype"
3245 showcqt_filter_select="fft"
3246 showfreqs_filter_deps="avcodec"
3247 showfreqs_filter_select="fft"
3248 showspectrum_filter_deps="avcodec"
3249 showspectrum_filter_select="fft"
3250 showspectrumpic_filter_deps="avcodec"
3251 showspectrumpic_filter_select="fft"
3252 signature_filter_deps="gpl avcodec avformat"
3253 smartblur_filter_deps="gpl swscale"
3254 sofalizer_filter_deps="libmysofa avcodec"
3255 sofalizer_filter_select="fft"
3256 spectrumsynth_filter_deps="avcodec"
3257 spectrumsynth_filter_select="fft"
3258 spp_filter_deps="gpl avcodec"
3259 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3260 stereo3d_filter_deps="gpl"
3261 subtitles_filter_deps="avformat avcodec libass"
3262 super2xsai_filter_deps="gpl"
3263 pixfmts_super2xsai_test_deps="super2xsai_filter"
3264 tinterlace_filter_deps="gpl"
3265 tinterlace_merge_test_deps="tinterlace_filter"
3266 tinterlace_pad_test_deps="tinterlace_filter"
3267 tonemap_filter_deps="const_nan"
3268 uspp_filter_deps="gpl avcodec"
3269 unsharp_filter_suggest="opencl"
3270 vaguedenoiser_filter_deps="gpl"
3271 vidstabdetect_filter_deps="libvidstab"
3272 vidstabtransform_filter_deps="libvidstab"
3273 libvmaf_filter_deps="libvmaf"
3274 zmq_filter_deps="libzmq"
3275 zoompan_filter_deps="swscale"
3276 zscale_filter_deps="libzimg const_nan"
3277 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3278 vpp_qsv_filter_deps="libmfx"
3279 vpp_qsv_filter_select="qsvvpp"
3280
3281 # examples
3282 avio_dir_cmd_deps="avformat avutil"
3283 avio_reading_deps="avformat avcodec avutil"
3284 decode_audio_example_deps="avcodec avutil"
3285 decode_video_example_deps="avcodec avutil"
3286 demuxing_decoding_example_deps="avcodec avformat avutil"
3287 encode_audio_example_deps="avcodec avutil"
3288 encode_video_example_deps="avcodec avutil"
3289 extract_mvs_example_deps="avcodec avformat avutil"
3290 filter_audio_example_deps="avfilter avutil"
3291 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3292 filtering_video_example_deps="avfilter avcodec avformat avutil"
3293 http_multiclient_example_deps="avformat avutil fork"
3294 hw_decode_example_deps="avcodec avformat avutil"
3295 metadata_example_deps="avformat avutil"
3296 muxing_example_deps="avcodec avformat avutil swscale"
3297 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3298 remuxing_example_deps="avcodec avformat avutil"
3299 resampling_audio_example_deps="avutil swresample"
3300 scaling_video_example_deps="avutil swscale"
3301 transcode_aac_example_deps="avcodec avformat swresample"
3302 transcoding_example_deps="avfilter avcodec avformat avutil"
3303
3304 # EXTRALIBS_LIST
3305 cpu_init_extralibs="pthreads_extralibs"
3306 cws2fws_extralibs="zlib_extralibs"
3307
3308 # libraries, in linking order
3309 avcodec_deps="avutil"
3310 avcodec_suggest="libm"
3311 avcodec_select="null_bsf"
3312 avdevice_deps="avformat avcodec avutil"
3313 avdevice_suggest="libm"
3314 avfilter_deps="avutil"
3315 avfilter_suggest="libm"
3316 avformat_deps="avcodec avutil"
3317 avformat_suggest="libm network zlib"
3318 avresample_deps="avutil"
3319 avresample_suggest="libm"
3320 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3321 postproc_deps="avutil gpl"
3322 postproc_suggest="libm"
3323 swresample_deps="avutil"
3324 swresample_suggest="libm libsoxr"
3325 swscale_deps="avutil"
3326 swscale_suggest="libm"
3327
3328 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3329 avfilter_extralibs="pthreads_extralibs"
3330 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3331
3332 # programs
3333 ffmpeg_deps="avcodec avfilter avformat swresample"
3334 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3335                null_filter
3336                trim_filter"
3337 ffmpeg_suggest="ole32 psapi shell32"
3338 ffplay_deps="avcodec avformat swscale swresample sdl2"
3339 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3340 ffplay_suggest="shell32"
3341 ffprobe_deps="avcodec avformat"
3342 ffprobe_suggest="shell32"
3343 ffserver_deps="avformat fork sarestart"
3344 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3345
3346 # documentation
3347 podpages_deps="perl"
3348 manpages_deps="perl pod2man"
3349 htmlpages_deps="perl"
3350 htmlpages_deps_any="makeinfo_html texi2html"
3351 txtpages_deps="perl makeinfo"
3352 doc_deps_any="manpages htmlpages podpages txtpages"
3353
3354 # default parameters
3355
3356 logfile="ffbuild/config.log"
3357
3358 # installation paths
3359 prefix_default="/usr/local"
3360 bindir_default='${prefix}/bin'
3361 datadir_default='${prefix}/share/ffmpeg'
3362 docdir_default='${prefix}/share/doc/ffmpeg'
3363 incdir_default='${prefix}/include'
3364 libdir_default='${prefix}/lib'
3365 mandir_default='${prefix}/share/man'
3366
3367 # toolchain
3368 ar_default="ar"
3369 cc_default="gcc"
3370 cxx_default="g++"
3371 host_cc_default="gcc"
3372 doxygen_default="doxygen"
3373 install="install"
3374 ln_s_default="ln -s -f"
3375 nm_default="nm -g"
3376 pkg_config_default=pkg-config
3377 ranlib_default="ranlib"
3378 strip_default="strip"
3379 version_script='--version-script'
3380 x86asmexe_default="nasm"
3381 windres_default="windres"
3382 nvcc_default="nvcc"
3383 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3384 striptype="direct"
3385
3386 # OS
3387 target_os_default=$(tolower $(uname -s))
3388 host_os=$target_os_default
3389
3390 # machine
3391 if test "$target_os_default" = aix; then
3392     arch_default=$(uname -p)
3393     strip_default="strip -X32_64"
3394 else
3395     arch_default=$(uname -m)
3396 fi
3397 cpu="generic"
3398 intrinsics="none"
3399
3400 # configurable options
3401 enable $PROGRAM_LIST
3402 enable $DOCUMENT_LIST
3403 enable $EXAMPLE_LIST
3404 enable $(filter_out avresample $LIBRARY_LIST)
3405 enable stripping
3406
3407 enable asm
3408 enable debug
3409 enable doc
3410 enable faan faandct faanidct
3411 enable optimizations
3412 enable runtime_cpudetect
3413 enable safe_bitstream_reader
3414 enable static
3415 enable swscale_alpha
3416 enable valgrind_backtrace
3417
3418 sws_max_filter_size_default=256
3419 set_default sws_max_filter_size
3420
3421 # internal components are enabled by default
3422 enable $EXTRALIBS_LIST
3423
3424 # Avoid external, non-system, libraries getting enabled by dependency resolution
3425 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3426
3427 # build settings
3428 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3429 LIBPREF="lib"
3430 LIBSUF=".a"
3431 FULLNAME='$(NAME)$(BUILDSUF)'
3432 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3433 SLIBPREF="lib"
3434 SLIBSUF=".so"
3435 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3436 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3437 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3438 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3439 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3440 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3441 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3442
3443 asflags_filter=echo
3444 cflags_filter=echo
3445 ldflags_filter=echo
3446
3447 AS_C='-c'
3448 AS_O='-o $@'
3449 CC_C='-c'
3450 CC_E='-E -o $@'
3451 CC_O='-o $@'
3452 CXX_C='-c'
3453 CXX_O='-o $@'
3454 OBJCC_C='-c'
3455 OBJCC_E='-E -o $@'
3456 OBJCC_O='-o $@'
3457 X86ASM_O='-o $@'
3458 LD_O='-o $@'
3459 LD_LIB='-l%'
3460 LD_PATH='-L'
3461 HOSTCC_C='-c'
3462 HOSTCC_E='-E -o $@'
3463 HOSTCC_O='-o $@'
3464 HOSTLD_O='-o $@'
3465 NVCC_C='-c'
3466 NVCC_O='-o $@'
3467
3468 host_extralibs='-lm'
3469 host_cflags_filter=echo
3470 host_ldflags_filter=echo
3471
3472 target_path='$(CURDIR)'
3473
3474 # since the object filename is not given with the -MM flag, the compiler
3475 # is only able to print the basename, and we must add the path ourselves
3476 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3477 DEPFLAGS='-MM'
3478
3479 mkdir -p ffbuild
3480
3481 # find source path
3482 if test -f configure; then
3483     source_path=.
3484 else
3485     source_path=$(cd $(dirname "$0"); pwd)
3486     case "$source_path" in
3487         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3488     esac
3489     test -e "$source_path/config.h" &&
3490         die "Out of tree builds are impossible with config.h in source dir."
3491 fi
3492
3493 for v in "$@"; do
3494     r=${v#*=}
3495     l=${v%"$r"}
3496     r=$(sh_quote "$r")
3497     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3498 done
3499
3500 find_things(){
3501     thing=$1
3502     pattern=$2
3503     file=$source_path/$3
3504     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3505 }
3506
3507 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3508 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3509 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3510 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3511 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3512 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3513 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3514 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3515 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3516
3517 find_things_extern(){
3518     thing=$1
3519     pattern=$2
3520     file=$source_path/$3
3521     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3522 }
3523
3524 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3525 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3526
3527 AVCODEC_COMPONENTS_LIST="
3528     $BSF_LIST
3529     $DECODER_LIST
3530     $ENCODER_LIST
3531     $HWACCEL_LIST
3532     $PARSER_LIST
3533 "
3534
3535 AVDEVICE_COMPONENTS_LIST="
3536     $INDEV_LIST
3537     $OUTDEV_LIST
3538 "
3539
3540 AVFILTER_COMPONENTS_LIST="
3541     $FILTER_LIST
3542 "
3543
3544 AVFORMAT_COMPONENTS_LIST="
3545     $DEMUXER_LIST
3546     $MUXER_LIST
3547     $PROTOCOL_LIST
3548 "
3549
3550 ALL_COMPONENTS="
3551     $AVCODEC_COMPONENTS_LIST
3552     $AVDEVICE_COMPONENTS_LIST
3553     $AVFILTER_COMPONENTS_LIST
3554     $AVFORMAT_COMPONENTS_LIST
3555 "
3556
3557 for n in $COMPONENT_LIST; do
3558     v=$(toupper ${n%s})_LIST
3559     eval enable \$$v
3560     eval ${n}_if_any="\$$v"
3561 done
3562
3563 enable $ARCH_EXT_LIST
3564
3565 die_unknown(){
3566     echo "Unknown option \"$1\"."
3567     echo "See $0 --help for available options."
3568     exit 1
3569 }
3570
3571 print_in_columns() {
3572     cols=$(expr $ncols / 24)
3573     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3574 }
3575
3576 show_list() {
3577     suffix=_$1
3578     shift
3579     echo $* | sed s/$suffix//g | print_in_columns
3580     exit 0
3581 }
3582
3583 rand_list(){
3584     IFS=', '
3585     set -- $*
3586     unset IFS
3587     for thing; do
3588         comp=${thing%:*}
3589         prob=${thing#$comp}
3590         prob=${prob#:}
3591         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3592         echo "prob ${prob:-0.5}"
3593         printf '%s\n' $comp
3594     done
3595 }
3596
3597 do_random(){
3598     action=$1
3599     shift
3600     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3601     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3602 }
3603
3604 for opt do
3605     optval="${opt#*=}"
3606     case "$opt" in
3607         --extra-ldflags=*)
3608             add_ldflags $optval
3609         ;;
3610         --extra-ldexeflags=*)
3611             add_ldexeflags $optval
3612         ;;
3613         --extra-ldsoflags=*)
3614             add_ldsoflags $optval
3615         ;;
3616         --extra-ldlibflags=*)
3617             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3618                  "removed in the future. Use --extra-ldsoflags instead."
3619             add_ldsoflags $optval
3620         ;;
3621         --extra-libs=*)
3622             add_extralibs $optval
3623         ;;
3624         --disable-devices)
3625             disable $INDEV_LIST $OUTDEV_LIST
3626         ;;
3627         --enable-debug=*)
3628             debuglevel="$optval"
3629         ;;
3630         --disable-programs)
3631             disable $PROGRAM_LIST
3632         ;;
3633         --disable-everything)
3634             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3635         ;;
3636         --disable-all)
3637             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3638             disable $LIBRARY_LIST $PROGRAM_LIST doc
3639             enable avutil
3640         ;;
3641         --enable-random|--disable-random)
3642             action=${opt%%-random}
3643             do_random ${action#--} $COMPONENT_LIST
3644         ;;
3645         --enable-random=*|--disable-random=*)
3646             action=${opt%%-random=*}
3647             do_random ${action#--} $optval
3648         ;;
3649         --enable-sdl)
3650             enable sdl2
3651         ;;
3652         --enable-*=*|--disable-*=*)
3653             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3654             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3655             eval list=\$$(toupper $thing)_LIST
3656             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3657             list=$(filter "$name" $list)
3658             [ "$list" = "" ] && warn "Option $opt did not match anything"
3659             $action $list
3660         ;;
3661         --enable-yasm|--disable-yasm)
3662             warn "The ${opt} option is only provided for compatibility and will be\n"\
3663                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3664             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3665         ;;
3666         --yasmexe=*)
3667             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3668                  "removed in the future. Use --x86asmexe instead."
3669             x86asmexe="$optval"
3670         ;;
3671         --enable-?*|--disable-?*)
3672             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3673             if is_in $option $COMPONENT_LIST; then
3674                 test $action = disable && action=unset
3675                 eval $action \$$(toupper ${option%s})_LIST
3676             elif is_in $option $CMDLINE_SELECT; then
3677                 $action $option
3678             else
3679                 die_unknown $opt
3680             fi
3681         ;;
3682         --list-*)
3683             NAME="${opt#--list-}"
3684             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3685             NAME=${NAME%s}
3686             eval show_list $NAME \$$(toupper $NAME)_LIST
3687         ;;
3688         --help|-h) show_help
3689         ;;
3690         --quiet|-q) quiet=yes
3691         ;;
3692         --fatal-warnings) enable fatal_warnings
3693         ;;
3694         --libfuzzer=*)
3695             libfuzzer_path="$optval"
3696         ;;
3697         *)
3698             optname="${opt%%=*}"
3699             optname="${optname#--}"
3700             optname=$(echo "$optname" | sed 's/-/_/g')
3701             if is_in $optname $CMDLINE_SET; then
3702                 eval $optname='$optval'
3703             elif is_in $optname $CMDLINE_APPEND; then
3704                 append $optname "$optval"
3705             else
3706                 die_unknown $opt
3707             fi
3708         ;;
3709     esac
3710 done
3711
3712 for e in $env; do
3713     eval "export $e"
3714 done
3715
3716 if disabled autodetect; then
3717
3718     # Unless iconv is explicitely disabled by the user, we still want to probe
3719     # for the iconv from the libc.
3720     disabled iconv || enable libc_iconv
3721
3722     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3723     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3724 fi
3725 # Mark specifically enabled, but normally autodetected libraries as requested.
3726 for lib in $AUTODETECT_LIBS; do
3727     enabled $lib && request $lib
3728 done
3729 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3730 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3731 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3732
3733 disabled logging && logfile=/dev/null
3734
3735 # we need to build at least one lib type
3736 if ! enabled_any static shared; then
3737     cat <<EOF
3738 At least one library type must be built.
3739 Specify --enable-static to build the static libraries or --enable-shared to
3740 build the shared libraries as well. To only build the shared libraries specify
3741 --disable-static in addition to --enable-shared.
3742 EOF
3743     exit 1
3744 fi
3745
3746 die_license_disabled() {
3747     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3748 }
3749
3750 die_license_disabled_gpl() {
3751     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3752 }
3753
3754 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3755 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3756
3757 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3758 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3759
3760 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3761
3762 enabled_all gnutls openssl &&
3763     die "GnuTLS and OpenSSL must not be enabled at the same time."
3764
3765 # Disable all the library-specific components if the library itself
3766 # is disabled, see AVCODEC_LIST and following _LIST variables.
3767
3768 disable_components(){
3769     disabled ${1} && disable $(
3770         eval components="\$$(toupper ${1})_COMPONENTS"
3771         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3772     )
3773 }
3774
3775 map 'disable_components $v' $LIBRARY_LIST
3776
3777 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3778 set >> $logfile
3779
3780 test -n "$valgrind" && toolchain="valgrind-memcheck"
3781
3782 enabled ossfuzz && {
3783     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3784     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3785 }
3786
3787 case "$toolchain" in
3788     *-asan)
3789         cc_default="${toolchain%-asan}"
3790         add_cflags  -fsanitize=address
3791         add_ldflags -fsanitize=address
3792     ;;
3793     *-msan)
3794         cc_default="${toolchain%-msan}"
3795         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3796         add_ldflags -fsanitize=memory
3797     ;;
3798     *-tsan)
3799         cc_default="${toolchain%-tsan}"
3800         add_cflags  -fsanitize=thread -fPIE
3801         add_ldflags -fsanitize=thread -pie
3802         case "$toolchain" in
3803             gcc-tsan)
3804                 add_cflags  -fPIC
3805                 add_ldflags -fPIC
3806                 ;;
3807         esac
3808     ;;
3809     *-usan)
3810         cc_default="${toolchain%-usan}"
3811         add_cflags  -fsanitize=undefined
3812         add_ldflags -fsanitize=undefined
3813     ;;
3814     valgrind-*)
3815         target_exec_default="valgrind"
3816         case "$toolchain" in
3817             valgrind-massif)
3818                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3819                 ;;
3820             valgrind-memcheck)
3821                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3822                 ;;
3823         esac
3824     ;;
3825     msvc)
3826         # Check whether the current MSVC version needs the C99 converter.
3827         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3828         # support enough of C99 to build ffmpeg. Default to the new
3829         # behaviour if the regexp was unable to match anything, since this
3830         # successfully parses the version number of existing supported
3831         # versions that require the converter (MSVC 2010 and 2012).
3832         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3833         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3834             cc_default="cl"
3835             cxx_default="cl"
3836         else
3837             cc_default="c99wrap cl"
3838             cxx_default="c99wrap cl"
3839         fi
3840         ld_default="$source_path/compat/windows/mslink"
3841         nm_default="dumpbin -symbols"
3842         ar_default="lib"
3843         case "$arch" in
3844         aarch64|arm64)
3845             as_default="armasm64"
3846             ;;
3847         arm*)
3848             as_default="armasm"
3849             ;;
3850         esac
3851         target_os_default="win32"
3852         # Use a relative path for TMPDIR. This makes sure all the
3853         # ffconf temp files are written with a relative path, avoiding
3854         # issues with msys/win32 path conversion for MSVC parameters
3855         # such as -Fo<file> or -out:<file>.
3856         TMPDIR=.
3857     ;;
3858     icl)
3859         cc_default="icl"
3860         ld_default="xilink"
3861         nm_default="dumpbin -symbols"
3862         ar_default="xilib"
3863         target_os_default="win32"
3864         TMPDIR=.
3865     ;;
3866     gcov)
3867         add_cflags  -fprofile-arcs -ftest-coverage
3868         add_ldflags -fprofile-arcs -ftest-coverage
3869     ;;
3870     llvm-cov)
3871         add_cflags -fprofile-arcs -ftest-coverage
3872         add_ldflags --coverage
3873     ;;
3874     hardened)
3875         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3876         add_cflags   -fno-strict-overflow -fstack-protector-all
3877         add_ldflags  -Wl,-z,relro -Wl,-z,now
3878         add_cflags   -fPIE
3879         add_ldexeflags -fPIE -pie
3880     ;;
3881     ?*)
3882         die "Unknown toolchain $toolchain"
3883     ;;
3884 esac
3885
3886 test -n "$cross_prefix" && enable cross_compile
3887
3888 if enabled cross_compile; then
3889     test -n "$arch" && test -n "$target_os" ||
3890         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3891 fi
3892
3893 ar_default="${cross_prefix}${ar_default}"
3894 cc_default="${cross_prefix}${cc_default}"
3895 cxx_default="${cross_prefix}${cxx_default}"
3896 nm_default="${cross_prefix}${nm_default}"
3897 pkg_config_default="${cross_prefix}${pkg_config_default}"
3898 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3899     ranlib_default="${cross_prefix}${ranlib_default} -D"
3900 else
3901     ranlib_default="${cross_prefix}${ranlib_default}"
3902 fi
3903 strip_default="${cross_prefix}${strip_default}"
3904 windres_default="${cross_prefix}${windres_default}"
3905
3906 sysinclude_default="${sysroot}/usr/include"
3907
3908 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3909     target_exec target_os x86asmexe nvcc
3910 enabled cross_compile || host_cc_default=$cc
3911 set_default host_cc
3912
3913 pkg_config_fail_message=""
3914 if ! $pkg_config --version >/dev/null 2>&1; then
3915     warn "$pkg_config not found, library detection may fail."
3916     pkg_config=false
3917 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3918     pkg_config_fail_message="
3919 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3920 fi
3921
3922 if test $doxygen != $doxygen_default && \
3923   ! $doxygen --version >/dev/null 2>&1; then
3924     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3925 fi
3926
3927 exesuf() {
3928     case $1 in
3929         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3930     esac
3931 }
3932
3933 EXESUF=$(exesuf $target_os)
3934 HOSTEXESUF=$(exesuf $host_os)
3935
3936 # set temporary file name
3937 : ${TMPDIR:=$TEMPDIR}
3938 : ${TMPDIR:=$TMP}
3939 : ${TMPDIR:=/tmp}
3940
3941 if [ -n "$tempprefix" ] ; then
3942     mktemp(){
3943         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3944         echo "$tmpname"
3945         mkdir "$tmpname"
3946     }
3947 elif ! check_cmd mktemp -u XXXXXX; then
3948     # simple replacement for missing mktemp
3949     # NOT SAFE FOR GENERAL USE
3950     mktemp(){
3951         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3952         echo "$tmpname"
3953         mkdir "$tmpname"
3954     }
3955 fi
3956
3957 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3958     die "Unable to create temporary directory in $TMPDIR."
3959
3960 tmpfile(){
3961     tmp="${FFTMPDIR}/test"$2
3962     (set -C; exec > $tmp) 2> /dev/null ||
3963         die "Unable to create temporary file in $FFTMPDIR."
3964     eval $1=$tmp
3965 }
3966
3967 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3968 trap 'exit 2' INT
3969
3970 tmpfile TMPASM .asm
3971 tmpfile TMPC   .c
3972 tmpfile TMPCPP .cpp
3973 tmpfile TMPE   $EXESUF
3974 tmpfile TMPH   .h
3975 tmpfile TMPM   .m
3976 tmpfile TMPO   .o
3977 tmpfile TMPS   .S
3978 tmpfile TMPSH  .sh
3979 tmpfile TMPV   .ver
3980
3981 unset -f mktemp
3982
3983 chmod +x $TMPE
3984
3985 # make sure we can execute files in $TMPDIR
3986 cat > $TMPSH 2>> $logfile <<EOF
3987 #! /bin/sh
3988 EOF
3989 chmod +x $TMPSH >> $logfile 2>&1
3990 if ! $TMPSH >> $logfile 2>&1; then
3991     cat <<EOF
3992 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3993 variable to another directory and make sure that it is not mounted noexec.
3994 EOF
3995     die "Sanity test failed."
3996 fi
3997
3998 armasm_flags(){
3999     for flag; do
4000         case $flag in
4001             # Filter out MSVC cl.exe options from cflags that shouldn't
4002             # be passed to gas-preprocessor
4003             -M[TD]*)                                            ;;
4004             *)                  echo $flag                      ;;
4005         esac
4006    done
4007 }
4008
4009 cparser_flags(){
4010     for flag; do
4011         case $flag in
4012             -Wno-switch)             echo -Wno-switch-enum ;;
4013             -Wno-format-zero-length) ;;
4014             -Wdisabled-optimization) ;;
4015             -Wno-pointer-sign)       echo -Wno-other ;;
4016             *)                       echo $flag ;;
4017         esac
4018     done
4019 }
4020
4021 msvc_common_flags(){
4022     for flag; do
4023         case $flag in
4024             # In addition to specifying certain flags under the compiler
4025             # specific filters, they must be specified here as well or else the
4026             # generic catch all at the bottom will print the original flag.
4027             -Wall)                ;;
4028             -Wextra)              ;;
4029             -std=c99)             ;;
4030             # Common flags
4031             -fomit-frame-pointer) ;;
4032             -g)                   echo -Z7 ;;
4033             -fno-math-errno)      ;;
4034             -fno-common)          ;;
4035             -fno-signed-zeros)    ;;
4036             -fPIC)                ;;
4037             -mthumb)              ;;
4038             -march=*)             ;;
4039             -lz)                  echo zlib.lib ;;
4040             -lx264)               echo libx264.lib ;;
4041             -lstdc++)             ;;
4042             -l*)                  echo ${flag#-l}.lib ;;
4043             -LARGEADDRESSAWARE)   echo $flag ;;
4044             -L*)                  echo -libpath:${flag#-L} ;;
4045             *)                    echo $flag ;;
4046         esac
4047     done
4048 }
4049
4050 msvc_flags(){
4051     msvc_common_flags "$@"
4052     for flag; do
4053         case $flag in
4054             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4055                                        -wd4554 ;;
4056             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4057                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4058                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4059                                        -wd4307 \
4060                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4061         esac
4062     done
4063 }
4064
4065 icl_flags(){
4066     msvc_common_flags "$@"
4067     for flag; do
4068         case $flag in
4069             # Despite what Intel's documentation says -Wall, which is supported
4070             # on Windows, does enable remarks so disable them here.
4071             -Wall)                echo $flag -Qdiag-disable:remark ;;
4072             -std=c99)             echo -Qstd=c99 ;;
4073             -flto)                echo -ipo ;;
4074         esac
4075     done
4076 }
4077
4078 icc_flags(){
4079     for flag; do
4080         case $flag in
4081             -flto)                echo -ipo ;;
4082             *)                    echo $flag ;;
4083         esac
4084     done
4085 }
4086
4087 pgi_flags(){
4088     for flag; do
4089         case $flag in
4090             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4091             -fomit-frame-pointer) echo -Mnoframe ;;
4092             -g)                   echo -gopt ;;
4093             *)                    echo $flag ;;
4094         esac
4095     done
4096 }
4097
4098 suncc_flags(){
4099     for flag; do
4100         case $flag in
4101             -march=*|-mcpu=*)
4102                 case "${flag#*=}" in
4103                     native)                   echo -xtarget=native       ;;
4104                     v9|niagara)               echo -xarch=sparc          ;;
4105                     ultrasparc)               echo -xarch=sparcvis       ;;
4106                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4107                     i586|pentium)             echo -xchip=pentium        ;;
4108                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4109                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4110                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4111                     pentium4*)          echo -xtarget=pentium4           ;;
4112                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4113                     *-sse3)             echo -xarch=sse3                 ;;
4114                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4115                     bonnell)                   echo -xarch=ssse3         ;;
4116                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4117                     westmere)                  echo -xtarget=westmere    ;;
4118                     silvermont)                echo -xarch=sse4_2        ;;
4119                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4120                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4121                                                echo -xarch=avx           ;;
4122                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4123                     btver1)                    echo -xarch=amdsse4a      ;;
4124                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4125                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4126                     k8|opteron|athlon64|athlon-fx)
4127                                                echo -xarch=sse2a         ;;
4128                     athlon*)                   echo -xarch=pentium_proa  ;;
4129                 esac
4130                 ;;
4131             -std=c99)             echo -xc99              ;;
4132             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4133             -fPIC)                echo -KPIC -xcode=pic32 ;;
4134             -W*,*)                echo $flag              ;;
4135             -f*-*|-W*|-mimpure-text)                      ;;
4136             -shared)              echo -G                 ;;
4137             *)                    echo $flag              ;;
4138         esac
4139     done
4140 }
4141
4142 tms470_flags(){
4143     for flag; do
4144         case $flag in
4145             -march=*|-mcpu=*)
4146                 case "${flag#*=}" in
4147                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4148                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4149                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4150                     armv6*|arm11*)          echo -mv=6   ;;
4151                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4152                                             echo -mv=5e  ;;
4153                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4154                 esac
4155                 ;;
4156             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4157             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4158             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4159             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4160             -msoft-float)   echo --float_support=vfplib       ;;
4161             -O[0-3]|-mf=*)  echo $flag                        ;;
4162             -g)             echo -g -mn                       ;;
4163             -pds=*)         echo $flag                        ;;
4164             -D*|-I*)        echo $flag                        ;;
4165             --gcc|--abi=*)  echo $flag                        ;;
4166             -me)            echo $flag                        ;;
4167         esac
4168     done
4169 }
4170
4171 probe_cc(){
4172     pfx=$1
4173     _cc=$2
4174     first=$3
4175
4176     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4177     unset _ld_o _ldflags _ld_lib _ld_path
4178     unset _depflags _DEPCMD _DEPFLAGS
4179     _flags_filter=echo
4180
4181     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4182         true # no-op to avoid reading stdin in following checks
4183     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4184         _type=llvm_gcc
4185         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4186         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4187         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4188         _cflags_speed='-O3'
4189         _cflags_size='-Os'
4190     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4191         _type=gcc
4192         gcc_version=$($_cc --version | head -n1)
4193         gcc_basever=$($_cc -dumpversion)
4194         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4195         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4196         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4197         case $gcc_basever in
4198             2) ;;
4199             2.*) ;;
4200             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4201         esac
4202         if [ "$first" = true ]; then
4203             case $gcc_basever in
4204                 4.2*)
4205                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4206             esac
4207         fi
4208         _cflags_speed='-O3'
4209         _cflags_size='-Os'
4210     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4211         _type=icc
4212         _ident=$($_cc --version | head -n1)
4213         _depflags='-MMD'
4214         _cflags_speed='-O3'
4215         _cflags_size='-Os'
4216         _cflags_noopt='-O1'
4217         _flags_filter=icc_flags
4218     elif $_cc -v 2>&1 | grep -q xlc; then
4219         _type=xlc
4220         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4221         _cflags_speed='-O5'
4222         _cflags_size='-O5 -qcompact'
4223     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4224         test -d "$sysroot" || die "No valid sysroot specified."
4225         _type=armcc
4226         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4227         armcc_conf="$PWD/armcc.conf"
4228         $_cc --arm_linux_configure                 \
4229              --arm_linux_config_file="$armcc_conf" \
4230              --configure_sysroot="$sysroot"        \
4231              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4232              die "Error creating armcc configuration file."
4233         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4234         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4235         as_default="${cross_prefix}gcc"
4236         _depflags='-MMD'
4237         _cflags_speed='-O3'
4238         _cflags_size='-Os'
4239     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4240         _type=tms470
4241         _ident=$($_cc -version | head -n1 | tr -s ' ')
4242         _flags='--gcc --abi=eabi -me'
4243         _cc_e='-ppl -fe=$@'
4244         _cc_o='-fe=$@'
4245         _depflags='-ppa -ppd=$(@:.o=.d)'
4246         _cflags_speed='-O3 -mf=5'
4247         _cflags_size='-O3 -mf=2'
4248         _flags_filter=tms470_flags
4249     elif $_cc -v 2>&1 | grep -q clang; then
4250         _type=clang
4251         _ident=$($_cc --version 2>/dev/null | head -n1)
4252         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4253         _cflags_speed='-O3'
4254         _cflags_size='-Oz'
4255     elif $_cc -V 2>&1 | grep -q Sun; then
4256         _type=suncc
4257         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4258         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4259         _DEPFLAGS='-xM1 -xc99'
4260         _ldflags='-std=c99'
4261         _cflags_speed='-O5'
4262         _cflags_size='-O5 -xspace'
4263         _flags_filter=suncc_flags
4264     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4265         _type=pathscale
4266         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4267         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4268         _cflags_speed='-O2'
4269         _cflags_size='-Os'
4270         _flags_filter='filter_out -Wdisabled-optimization'
4271     elif $_cc -v 2>&1 | grep -q Open64; then
4272         _type=open64
4273         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4274         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4275         _cflags_speed='-O2'
4276         _cflags_size='-Os'
4277         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4278     elif $_cc -V 2>&1 | grep -q Portland; then
4279         _type=pgi
4280         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4281         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4282         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4283         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4284         _cflags_noopt="-O"
4285         _flags_filter=pgi_flags
4286     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4287         _type=armasm
4288         _ident=$($_cc | head -n1)
4289         # 4509: "This form of conditional instruction is deprecated"
4290         _flags="-nologo -ignore 4509"
4291         _flags_filter=armasm_flags
4292     elif $_cc 2>&1 | grep -q Intel; then
4293         _type=icl
4294         _ident=$($_cc 2>&1 | head -n1)
4295         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4296         # Not only is O3 broken on 13.x+ but it is slower on all previous
4297         # versions (tested) as well.
4298         _cflags_speed="-O2"
4299         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4300         if $_cc 2>&1 | grep -q Linker; then
4301             _ld_o='-out:$@'
4302         else
4303             _ld_o='-Fe$@'
4304         fi
4305         _cc_o='-Fo$@'
4306         _cc_e='-P'
4307         _flags_filter=icl_flags
4308         _ld_lib='lib%.a'
4309         _ld_path='-libpath:'
4310         # -Qdiag-error to make icl error when seeing certain unknown arguments
4311         _flags='-nologo -Qdiag-error:4044,10157'
4312         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4313         # with MSVC which enables it by default.
4314         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4315         disable stripping
4316     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4317         # lld can emulate multiple different linkers; in ms link.exe mode,
4318         # the -? parameter gives the help output which contains an identifyable
4319         # string, while it gives an error in other modes.
4320         _type=lld-link
4321         # The link.exe mode doesn't have a switch for getting the version,
4322         # but we can force it back to gnu mode and get the version from there.
4323         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4324         _ld_o='-out:$@'
4325         _flags_filter=msvc_flags
4326         _ld_lib='lib%.a'
4327         _ld_path='-libpath:'
4328     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4329         _type=msvc
4330         _ident=$($_cc 2>&1 | head -n1)
4331         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4332         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4333         _cflags_speed="-O2"
4334         _cflags_size="-O1"
4335         _cflags_noopt="-O1"
4336         if $_cc -nologo- 2>&1 | grep -q Linker; then
4337             _ld_o='-out:$@'
4338         else
4339             _ld_o='-Fe$@'
4340         fi
4341         _cc_o='-Fo$@'
4342         _cc_e='-P -Fi$@'
4343         _flags_filter=msvc_flags
4344         _ld_lib='lib%.a'
4345         _ld_path='-libpath:'
4346         _flags='-nologo'
4347         disable stripping
4348     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4349         _type=cparser
4350         _ident=$($_cc --version | head -n1)
4351         _depflags='-MMD'
4352         _cflags_speed='-O4'
4353         _cflags_size='-O2'
4354         _flags_filter=cparser_flags
4355     fi
4356
4357     eval ${pfx}_type=\$_type
4358     eval ${pfx}_ident=\$_ident
4359 }
4360
4361 set_ccvars(){
4362     eval ${1}_C=\${_cc_c-\${${1}_C}}
4363     eval ${1}_E=\${_cc_e-\${${1}_E}}
4364     eval ${1}_O=\${_cc_o-\${${1}_O}}
4365
4366     if [ -n "$_depflags" ]; then
4367         eval ${1}_DEPFLAGS=\$_depflags
4368     else
4369         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4370         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4371         eval DEP${1}FLAGS=\$_flags
4372     fi
4373 }
4374
4375 probe_cc cc "$cc" "true"
4376 cflags_filter=$_flags_filter
4377 cflags_speed=$_cflags_speed
4378 cflags_size=$_cflags_size
4379 cflags_noopt=$_cflags_noopt
4380 add_cflags $_flags $_cflags
4381 cc_ldflags=$_ldflags
4382 set_ccvars CC
4383 set_ccvars CXX
4384
4385 probe_cc hostcc "$host_cc"
4386 host_cflags_filter=$_flags_filter
4387 host_cflags_speed=$_cflags_speed
4388 add_host_cflags  $_flags $_cflags
4389 set_ccvars HOSTCC
4390
4391 test -n "$cc_type" && enable $cc_type ||
4392     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4393
4394 : ${as_default:=$cc}
4395 : ${objcc_default:=$cc}
4396 : ${dep_cc_default:=$cc}
4397 : ${ld_default:=$cc}
4398 : ${host_ld_default:=$host_cc}
4399 set_default ar as objcc dep_cc ld ln_s host_ld windres
4400
4401 probe_cc as "$as"
4402 asflags_filter=$_flags_filter
4403 add_asflags $_flags $_cflags
4404 set_ccvars AS
4405
4406 probe_cc objcc "$objcc"
4407 objcflags_filter=$_flags_filter
4408 add_objcflags $_flags $_cflags
4409 set_ccvars OBJC
4410
4411 probe_cc ld "$ld"
4412 ldflags_filter=$_flags_filter
4413 add_ldflags $_flags $_ldflags
4414 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4415 LD_O=${_ld_o-$LD_O}
4416 LD_LIB=${_ld_lib-$LD_LIB}
4417 LD_PATH=${_ld_path-$LD_PATH}
4418
4419 probe_cc hostld "$host_ld"
4420 host_ldflags_filter=$_flags_filter
4421 add_host_ldflags $_flags $_ldflags
4422 HOSTLD_O=${_ld_o-$HOSTLD_O}
4423
4424 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4425     probe_cc depcc "$dep_cc"
4426     CCDEP=${_DEPCMD:-$DEPCMD}
4427     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4428     DEPCCFLAGS=$_flags
4429 fi
4430
4431 if $ar 2>&1 | grep -q Microsoft; then
4432     arflags="-nologo"
4433     ar_o='-out:$@'
4434 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4435     arflags="rq"
4436     ar_o='$@'
4437 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4438     arflags='-Xany -r -c'
4439     ar_o='$@'
4440 elif $ar 2>&1 | grep -q "\[D\] "; then
4441     arflags="rcD"
4442     ar_o='$@'
4443 else
4444     arflags="rc"
4445     ar_o='$@'
4446 fi
4447
4448 add_cflags $extra_cflags
4449 add_cxxflags $extra_cxxflags
4450 add_objcflags $extra_objcflags
4451 add_asflags $extra_cflags
4452
4453 if test -n "$sysroot"; then
4454     case "$cc_type" in
4455         gcc|llvm_gcc|clang)
4456             add_cppflags --sysroot="$sysroot"
4457             add_ldflags --sysroot="$sysroot"
4458         ;;
4459         tms470)
4460             add_cppflags -I"$sysinclude"
4461             add_ldflags  --sysroot="$sysroot"
4462         ;;
4463     esac
4464 fi
4465
4466 if test "$cpu" = host; then
4467     enabled cross_compile &&
4468         die "--cpu=host makes no sense when cross-compiling."
4469
4470     case "$cc_type" in
4471         gcc|llvm_gcc)
4472             check_native(){
4473                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4474                 sed -n "/cc1.*$1=/{
4475                             s/.*$1=\\([^ ]*\\).*/\\1/
4476                             p
4477                             q
4478                         }" $TMPE
4479             }
4480             cpu=$(check_native -march || check_native -mcpu)
4481         ;;
4482         clang)
4483             check_native(){
4484                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4485                 sed -n "/cc1.*-target-cpu /{
4486                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4487                             p
4488                             q
4489                         }" $TMPE
4490             }
4491             cpu=$(check_native -march)
4492         ;;
4493     esac
4494
4495     test "${cpu:-host}" = host &&
4496         die "--cpu=host not supported with compiler $cc"
4497 fi
4498
4499 # Deal with common $arch aliases
4500 case "$arch" in
4501     aarch64|arm64)
4502         arch="aarch64"
4503     ;;
4504     arm*|iPad*|iPhone*)
4505         arch="arm"
4506     ;;
4507     mips*|IP*)
4508         case "$arch" in
4509         *el)
4510             add_cppflags -EL
4511             add_ldflags -EL
4512         ;;
4513         *eb)
4514             add_cppflags -EB
4515             add_ldflags -EB
4516         ;;
4517         esac
4518         arch="mips"
4519     ;;
4520     parisc*|hppa*)
4521         arch="parisc"
4522     ;;
4523     "Power Macintosh"|ppc*|powerpc*)
4524         arch="ppc"
4525     ;;
4526     s390|s390x)
4527         arch="s390"
4528     ;;
4529     sh4|sh)
4530         arch="sh4"
4531     ;;
4532     sun4*|sparc*)
4533         arch="sparc"
4534     ;;
4535     tilegx|tile-gx)
4536         arch="tilegx"
4537     ;;
4538     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4539         arch="x86"
4540     ;;
4541 esac
4542
4543 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4544 enable $arch
4545
4546 # Add processor-specific flags
4547 if enabled aarch64; then
4548
4549     case $cpu in
4550         armv*)
4551             cpuflags="-march=$cpu"
4552         ;;
4553         *)
4554             cpuflags="-mcpu=$cpu"
4555         ;;
4556     esac
4557
4558 elif enabled alpha; then
4559
4560     cpuflags="-mcpu=$cpu"
4561
4562 elif enabled arm; then
4563
4564     check_arm_arch() {
4565         check_cpp_condition stddef.h \
4566             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4567             $cpuflags
4568     }
4569
4570     probe_arm_arch() {
4571         if   check_arm_arch 4;        then echo armv4
4572         elif check_arm_arch 4T;       then echo armv4t
4573         elif check_arm_arch 5;        then echo armv5
4574         elif check_arm_arch 5E;       then echo armv5e
4575         elif check_arm_arch 5T;       then echo armv5t
4576         elif check_arm_arch 5TE;      then echo armv5te
4577         elif check_arm_arch 5TEJ;     then echo armv5te
4578         elif check_arm_arch 6;        then echo armv6
4579         elif check_arm_arch 6J;       then echo armv6j
4580         elif check_arm_arch 6K;       then echo armv6k
4581         elif check_arm_arch 6Z;       then echo armv6z
4582         elif check_arm_arch 6ZK;      then echo armv6zk
4583         elif check_arm_arch 6T2;      then echo armv6t2
4584         elif check_arm_arch 7;        then echo armv7
4585         elif check_arm_arch 7A  7_A;  then echo armv7-a
4586         elif check_arm_arch 7S;       then echo armv7-a
4587         elif check_arm_arch 7R  7_R;  then echo armv7-r
4588         elif check_arm_arch 7M  7_M;  then echo armv7-m
4589         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4590         elif check_arm_arch 8A  8_A;  then echo armv8-a
4591         fi
4592     }
4593
4594     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4595
4596     case $cpu in
4597         armv*)
4598             cpuflags="-march=$cpu"
4599             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4600         ;;
4601         *)
4602             cpuflags="-mcpu=$cpu"
4603             case $cpu in
4604                 cortex-a*)                               subarch=armv7a  ;;
4605                 cortex-r*)                               subarch=armv7r  ;;
4606                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4607                 arm11*)                                  subarch=armv6   ;;
4608                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4609                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4610                 *)                             subarch=$(probe_arm_arch) ;;
4611             esac
4612         ;;
4613     esac
4614
4615     case "$subarch" in
4616         armv5t*)    enable fast_clz                ;;
4617         armv[6-8]*)
4618             enable fast_clz
4619             disabled fast_unaligned || enable fast_unaligned
4620             ;;
4621     esac
4622
4623 elif enabled avr32; then
4624
4625     case $cpu in
4626         ap7[02]0[0-2])
4627             subarch="avr32_ap"
4628             cpuflags="-mpart=$cpu"
4629         ;;
4630         ap)
4631             subarch="avr32_ap"
4632             cpuflags="-march=$cpu"
4633         ;;
4634         uc3[ab]*)
4635             subarch="avr32_uc"
4636             cpuflags="-mcpu=$cpu"
4637         ;;
4638         uc)
4639             subarch="avr32_uc"
4640             cpuflags="-march=$cpu"
4641         ;;
4642     esac
4643
4644 elif enabled bfin; then
4645
4646     cpuflags="-mcpu=$cpu"
4647
4648 elif enabled mips; then
4649
4650     cpuflags="-march=$cpu"
4651
4652     if [ "$cpu" != "generic" ]; then
4653         disable mips32r2
4654         disable mips32r5
4655         disable mips64r2
4656         disable mips32r6
4657         disable mips64r6
4658         disable loongson2
4659         disable loongson3
4660
4661         case $cpu in
4662             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4663                 enable mips32r2
4664                 disable msa
4665             ;;
4666             p5600|i6400|p6600)
4667                 disable mipsdsp
4668                 disable mipsdspr2
4669             ;;
4670             loongson*)
4671                 enable loongson2
4672                 enable loongson3
4673                 enable local_aligned
4674                 enable simd_align_16
4675                 enable fast_64bit
4676                 enable fast_clz
4677                 enable fast_cmov
4678                 enable fast_unaligned
4679                 disable aligned_stack
4680                 disable mipsfpu
4681                 disable mipsdsp
4682                 disable mipsdspr2
4683                 case $cpu in
4684                     loongson3*)
4685                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4686                     ;;
4687                     loongson2e)
4688                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4689                     ;;
4690                     loongson2f)
4691                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4692                     ;;
4693                 esac
4694             ;;
4695             *)
4696                 # Unknown CPU. Disable everything.
4697                 warn "unknown CPU. Disabling all MIPS optimizations."
4698                 disable mipsfpu
4699                 disable mipsdsp
4700                 disable mipsdspr2
4701                 disable msa
4702                 disable mmi
4703             ;;
4704         esac
4705
4706         case $cpu in
4707             24kc)
4708                 disable mipsfpu
4709                 disable mipsdsp
4710                 disable mipsdspr2
4711             ;;
4712             24kf*)
4713                 disable mipsdsp
4714                 disable mipsdspr2
4715             ;;
4716             24kec|34kc|1004kc)
4717                 disable mipsfpu
4718                 disable mipsdspr2
4719             ;;
4720             24kef*|34kf*|1004kf*)
4721                 disable mipsdspr2
4722             ;;
4723             74kc)
4724                 disable mipsfpu
4725             ;;
4726             p5600)
4727                 enable mips32r5
4728                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4729             ;;
4730             i6400)
4731                 enable mips64r6
4732                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4733             ;;
4734             p6600)
4735                 enable mips64r6
4736                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4737             ;;
4738         esac
4739     else
4740         # We do not disable anything. Is up to the user to disable the unwanted features.
4741         warn 'generic cpu selected'
4742     fi
4743
4744 elif enabled ppc; then
4745
4746     disable ldbrx
4747
4748     case $(tolower $cpu) in
4749         601|ppc601|powerpc601)
4750             cpuflags="-mcpu=601"
4751             disable altivec
4752         ;;
4753         603*|ppc603*|powerpc603*)
4754             cpuflags="-mcpu=603"
4755             disable altivec
4756         ;;
4757         604*|ppc604*|powerpc604*)
4758             cpuflags="-mcpu=604"
4759             disable altivec
4760         ;;
4761         g3|75*|ppc75*|powerpc75*)
4762             cpuflags="-mcpu=750"
4763             disable altivec
4764         ;;
4765         g4|745*|ppc745*|powerpc745*)
4766             cpuflags="-mcpu=7450"
4767             disable vsx
4768         ;;
4769         74*|ppc74*|powerpc74*)
4770             cpuflags="-mcpu=7400"
4771             disable vsx
4772         ;;
4773         g5|970|ppc970|powerpc970)
4774             cpuflags="-mcpu=970"
4775             disable vsx
4776         ;;
4777         power[3-6]*)
4778             cpuflags="-mcpu=$cpu"
4779             disable vsx
4780         ;;
4781         power[7-8]*)
4782             cpuflags="-mcpu=$cpu"
4783         ;;
4784         cell)
4785             cpuflags="-mcpu=cell"
4786             enable ldbrx
4787             disable vsx
4788         ;;
4789         e500mc)
4790             cpuflags="-mcpu=e500mc"
4791             disable altivec
4792         ;;
4793         e500v2)
4794             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4795             disable altivec
4796             disable dcbzl
4797         ;;
4798         e500)
4799             cpuflags="-mcpu=8540 -mhard-float"
4800             disable altivec
4801             disable dcbzl
4802         ;;
4803     esac
4804
4805 elif enabled sparc; then
4806
4807     case $cpu in
4808         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4809             cpuflags="-mcpu=$cpu"
4810         ;;
4811         ultrasparc*|niagara[234])
4812             cpuflags="-mcpu=$cpu"
4813         ;;
4814     esac
4815
4816 elif enabled x86; then
4817
4818     case $cpu in
4819         i[345]86|pentium)
4820             cpuflags="-march=$cpu"
4821             disable i686
4822             disable mmx
4823         ;;
4824         # targets that do NOT support nopl and conditional mov (cmov)
4825         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4826             cpuflags="-march=$cpu"
4827             disable i686
4828         ;;
4829         # targets that do support nopl and conditional mov (cmov)
4830         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4831         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4832         |amdfam10|barcelona|b[dt]ver*|znver*)
4833             cpuflags="-march=$cpu"
4834             enable i686
4835             enable fast_cmov
4836         ;;
4837         # targets that do support conditional mov but on which it's slow
4838         pentium4|pentium4m|prescott|nocona)
4839             cpuflags="-march=$cpu"
4840             enable i686
4841             disable fast_cmov
4842         ;;
4843     esac
4844
4845 fi
4846
4847 if [ "$cpu" != generic ]; then
4848     add_cflags  $cpuflags
4849     add_asflags $cpuflags
4850     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4851 fi
4852
4853 # compiler sanity check
4854 check_exec <<EOF
4855 int main(void){ return 0; }
4856 EOF
4857 if test "$?" != 0; then
4858     echo "$cc is unable to create an executable file."
4859     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4860         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4861         echo "Only do this if you know what cross compiling means."
4862     fi
4863     die "C compiler test failed."
4864 fi
4865
4866 add_cppflags -D_ISOC99_SOURCE
4867 add_cxxflags -D__STDC_CONSTANT_MACROS
4868 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4869
4870 # some compilers silently accept -std=c11, so we also need to check that the
4871 # version macro is defined properly
4872 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4873     add_cflags -std=c11 ||
4874     check_cflags -std=c99
4875
4876 check_cppflags -D_FILE_OFFSET_BITS=64
4877 check_cppflags -D_LARGEFILE_SOURCE
4878
4879 add_host_cppflags -D_ISOC99_SOURCE
4880 check_host_cflags -std=c99
4881 check_host_cflags -Wall
4882 check_host_cflags $host_cflags_speed
4883
4884 check_64bit(){
4885     arch32=$1
4886     arch64=$2
4887     expr=$3
4888     check_code cc "" "int test[2*($expr) - 1]" &&
4889         subarch=$arch64 || subarch=$arch32
4890 }
4891
4892 case "$arch" in
4893     aarch64|alpha|ia64)
4894         spic=$shared
4895     ;;
4896     mips)
4897         check_64bit mips mips64 '_MIPS_SIM > 1'
4898         spic=$shared
4899     ;;
4900     parisc)
4901         check_64bit parisc parisc64 'sizeof(void *) > 4'
4902         spic=$shared
4903     ;;
4904     ppc)
4905         check_64bit ppc ppc64 'sizeof(void *) > 4'
4906         spic=$shared
4907     ;;
4908     s390)
4909         check_64bit s390 s390x 'sizeof(void *) > 4'
4910         spic=$shared
4911     ;;
4912     sparc)
4913         check_64bit sparc sparc64 'sizeof(void *) > 4'
4914         spic=$shared
4915     ;;
4916     x86)
4917         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4918         # Treat x32 as x64 for now. Note it also needs spic=$shared
4919         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4920             subarch=x86_64
4921         if test "$subarch" = "x86_64"; then
4922             spic=$shared
4923         fi
4924     ;;
4925     ppc)
4926         check_cc <<EOF && subarch="ppc64"
4927         int test[(int)sizeof(char*) - 7];
4928 EOF
4929     ;;
4930 esac
4931
4932 enable $subarch
4933 enabled spic && enable_weak pic
4934
4935 enabled x86_64 && objformat=elf64 || objformat="elf32"
4936
4937 # OS specific
4938 case $target_os in
4939     aix)
4940         SHFLAGS=-shared
4941         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4942         enabled shared && add_ldflags -Wl,-brtl
4943         ;;
4944     android)
4945         disable symver
4946         enable section_data_rel_ro
4947         SLIB_INSTALL_NAME='$(SLIBNAME)'
4948         SLIB_INSTALL_LINKS=
4949         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4950         ;;
4951     haiku)
4952         prefix_default="/boot/common"
4953         network_extralibs="-lnetwork"
4954         host_extralibs=
4955         ;;
4956     sunos)
4957         SHFLAGS='-shared -Wl,-h,$$(@F)'
4958         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4959         network_extralibs="-lsocket -lnsl"
4960         add_cppflags -D__EXTENSIONS__
4961         # When using suncc to build, the Solaris linker will mark
4962         # an executable with each instruction set encountered by
4963         # the Solaris assembler.  As our libraries contain their own
4964         # guards for processor-specific code, instead suppress
4965         # generation of the HWCAPS ELF section on Solaris x86 only.
4966         enabled_all suncc x86 &&
4967             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4968             add_ldflags -Wl,-M,mapfile
4969         nm_default='nm -P -g'
4970         version_script='-M'
4971         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4972         ;;
4973     netbsd)
4974         disable symver
4975         oss_indev_extralibs="-lossaudio"
4976         oss_outdev_extralibs="-lossaudio"
4977         enabled gcc || check_ldflags -Wl,-zmuldefs
4978         ;;
4979     openbsd|bitrig)
4980         disable symver
4981         SHFLAGS='-shared'
4982         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4983         SLIB_INSTALL_LINKS=
4984         oss_indev_extralibs="-lossaudio"
4985         oss_outdev_extralibs="-lossaudio"
4986         ;;
4987     dragonfly)
4988         disable symver
4989         ;;
4990     freebsd)
4991         ;;
4992     bsd/os)
4993         add_extralibs -lpoll -lgnugetopt
4994         strip="strip -d"
4995         ;;
4996     darwin)
4997         enabled ppc && add_asflags -force_cpusubtype_ALL
4998         install_name_dir_default='$(SHLIBDIR)'
4999         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5000         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5001         strip="${strip} -x"
5002         add_ldflags -Wl,-dynamic,-search_paths_first
5003         check_cflags -Werror=partial-availability
5004         SLIBSUF=".dylib"
5005         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5006         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5007         enabled x86_64 && objformat="macho64" || objformat="macho32"
5008         enabled_any pic shared x86_64 ||
5009             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5010         check_header dispatch/dispatch.h &&
5011             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5012         if test -n "$sysroot"; then
5013             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5014             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5015         fi
5016         version_script='-exported_symbols_list'
5017         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5018         ;;
5019     msys*)
5020         die "Native MSYS builds are discouraged, please use the MINGW environment."
5021         ;;
5022     mingw32*|mingw64*)
5023         target_os=mingw32
5024         LIBTARGET=i386
5025         if enabled x86_64; then
5026             LIBTARGET="i386:x86-64"
5027         fi
5028         if enabled shared; then
5029             # Cannot build both shared and static libs when using dllexport.
5030             disable static
5031         fi
5032         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5033         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5034         shlibdir_default="$bindir_default"
5035         SLIBPREF=""
5036         SLIBSUF=".dll"
5037         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5038         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5039         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5040         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5041         SLIB_INSTALL_LINKS=
5042         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5043         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5044         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5045         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5046         enabled x86_64 && objformat="win64" || objformat="win32"
5047         dlltool="${cross_prefix}dlltool"
5048         ranlib=:
5049         enable dos_paths
5050         check_ldflags -Wl,--nxcompat,--dynamicbase
5051         # Lets work around some stupidity in binutils.
5052         # ld will strip relocations from executables even though we need them
5053         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5054         # however ld then forgets what the entry point should be (oops) so we
5055         # have to manually (re)set it.
5056         if enabled x86_32; then
5057             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5058         elif enabled x86_64; then
5059             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5060             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5061             # Set image base >4GB for extra entropy with HEASLR
5062             add_ldexeflags -Wl,--image-base,0x140000000
5063             append SHFLAGS -Wl,--image-base,0x180000000
5064         fi
5065         ;;
5066     win32|win64)
5067         disable symver
5068         if enabled shared; then
5069             # Link to the import library instead of the normal static library
5070             # for shared libs.
5071             LD_LIB='%.lib'
5072             # Cannot build both shared and static libs with MSVC or icl.
5073             disable static
5074         fi
5075         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5076         shlibdir_default="$bindir_default"
5077         SLIBPREF=""
5078         SLIBSUF=".dll"
5079         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5080         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5081         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5082         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5083         SLIB_INSTALL_LINKS=
5084         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5085         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5086         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5087         enabled x86_64 && objformat="win64" || objformat="win32"
5088         ranlib=:
5089         enable dos_paths
5090         ;;
5091     cygwin*)
5092         target_os=cygwin
5093         shlibdir_default="$bindir_default"
5094         SLIBPREF="cyg"
5095         SLIBSUF=".dll"
5096         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5097         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5098         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5099         SLIB_INSTALL_LINKS=
5100         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5101         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5102         enabled x86_64 && objformat="win64" || objformat="win32"
5103         enable dos_paths
5104         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5105         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5106         ;;
5107     *-dos|freedos|opendos)
5108         network_extralibs="-lsocket"
5109         objformat="coff"
5110         enable dos_paths
5111         add_cppflags -U__STRICT_ANSI__
5112         ;;
5113     linux)
5114         enable section_data_rel_ro
5115         enabled_any arm aarch64 && enable_weak linux_perf
5116         ;;
5117     irix*)
5118         target_os=irix
5119         ranlib="echo ignoring ranlib"
5120         ;;
5121     os/2*)
5122         strip="lxlite -CS"
5123         striptype=""
5124         objformat="aout"
5125         add_cppflags -D_GNU_SOURCE
5126         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5127         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5128         LIBSUF="_s.a"
5129         SLIBPREF=""
5130         SLIBSUF=".dll"
5131         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5132         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5133         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5134             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5135             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5136             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5137             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5138         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5139             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5140         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5141         SLIB_INSTALL_LINKS=
5142         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5143         enable dos_paths
5144         enable_weak os2threads
5145         ;;
5146     gnu/kfreebsd)
5147         add_cppflags -D_BSD_SOURCE
5148         ;;
5149     gnu)
5150         ;;
5151     qnx)
5152         add_cppflags -D_QNX_SOURCE
5153         network_extralibs="-lsocket"
5154         ;;
5155     symbian)
5156         SLIBSUF=".dll"
5157         enable dos_paths
5158         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5159         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5160         add_ldflags -Wl,--target1-abs,--no-undefined \
5161                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5162                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5163         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5164                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5165                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5166         ;;
5167     minix)
5168         ;;
5169     none)
5170         ;;
5171     *)
5172         die "Unknown OS '$target_os'."
5173         ;;
5174 esac
5175
5176 # test if creating links works
5177 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5178 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5179 mkdir "$link_dest"
5180 $ln_s "$link_dest" "$link_name"
5181 touch "$link_dest/test_file"
5182 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5183     # create link to source path
5184     [ -e src ] && rm src
5185     $ln_s "$source_path" src
5186     source_link=src
5187 else
5188     # creating directory links doesn't work
5189     # fall back to using the full source path
5190     source_link="$source_path"
5191 fi
5192 # cleanup
5193 rm -r "$link_dest"
5194 rm -r "$link_name"
5195
5196 # determine libc flavour
5197
5198 probe_libc(){
5199     pfx=$1
5200     pfx_no_=${pfx%_}
5201     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5202     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5203         eval ${pfx}libc_type=uclibc
5204         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5205     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5206         eval ${pfx}libc_type=glibc
5207         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5208     # MinGW headers can be installed on Cygwin, so check for newlib first.
5209     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5210         eval ${pfx}libc_type=newlib
5211         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5212     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5213     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5214         eval ${pfx}libc_type=mingw64
5215         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5216             add_compat msvcrt/snprintf.o
5217             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5218         fi
5219         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5220         eval test \$${pfx_no_}cc_type = "gcc" &&
5221             add_${pfx}cppflags -D__printf__=__gnu_printf__
5222     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5223          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5224         eval ${pfx}libc_type=mingw32
5225         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5226             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5227             die "ERROR: MinGW32 runtime version must be >= 3.15."
5228         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5229         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5230             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5231         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5232             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5233         eval test \$${pfx_no_}cc_type = "gcc" &&
5234             add_${pfx}cppflags -D__printf__=__gnu_printf__
5235     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5236         eval ${pfx}libc_type=msvcrt
5237         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5238             if [ "$pfx" = host_ ]; then
5239                 add_host_cppflags -Dsnprintf=_snprintf
5240             else
5241                 add_compat strtod.o strtod=avpriv_strtod
5242                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5243                                              _snprintf=avpriv_snprintf  \
5244                                              vsnprintf=avpriv_vsnprintf
5245             fi
5246         fi
5247         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5248         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5249         # 0x601 by default unless something else is set by the user.
5250         # This can easily lead to us detecting functions only present
5251         # in such new versions and producing binaries requiring windows 7.0.
5252         # Therefore explicitly set the default to XP unless the user has
5253         # set something else on the command line.
5254         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5255         # family. For these cases, configure is free to use any functions
5256         # found in the SDK headers by default. (Alternatively, we could force
5257         # _WIN32_WINNT to 0x0602 in that case.)
5258         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5259             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5260 #ifdef WINAPI_FAMILY
5261 #include <winapifamily.h>
5262 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5263 #error not desktop
5264 #endif
5265 #endif
5266 EOF
5267         if [ "$pfx" = "" ]; then
5268             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5269             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5270         fi
5271     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5272         eval ${pfx}libc_type=klibc
5273     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5274         eval ${pfx}libc_type=bionic
5275     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5276         eval ${pfx}libc_type=solaris
5277         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5278     fi
5279     check_${pfx}cc <<EOF
5280 #include <time.h>
5281 void *v = localtime_r;
5282 EOF
5283 test "$?" != 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
5284 #include <time.h>
5285 void *v = localtime_r;
5286 EOF
5287
5288     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5289 }
5290
5291 probe_libc
5292 probe_libc host_
5293
5294 # hacks for compiler/libc/os combinations
5295
5296 case $libc_type in
5297     bionic)
5298         add_compat strtod.o strtod=avpriv_strtod
5299         ;;
5300     glibc)
5301         if enabled tms470; then
5302             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5303             add_cppflags -D__USER_LABEL_PREFIX__=
5304             add_cppflags -D__builtin_memset=memset
5305             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5306             add_cflags   -pds=48    # incompatible redefinition of macro
5307         fi
5308         ;;
5309 esac
5310
5311 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5312     add_cppflags '-I\$(SRC_PATH)/compat/float'
5313
5314 esc(){
5315     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5316 }
5317
5318 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5319
5320 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5321
5322 set_default libdir
5323 : ${shlibdir_default:="$libdir"}
5324 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5325
5326 set_default $PATHS_LIST
5327 set_default nm
5328
5329 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5330
5331 enable_weak_pic() {
5332     disabled pic && return
5333     enable pic
5334     add_cppflags -DPIC
5335     case "$target_os" in
5336     mingw*|cygwin*|win*)
5337         ;;
5338     *)
5339         add_cflags -fPIC
5340         add_asflags -fPIC
5341         ;;
5342     esac
5343 }
5344
5345 enabled pic && enable_weak_pic
5346
5347 check_cc <<EOF || die "Symbol mangling check failed."
5348 int ff_extern;
5349 EOF
5350 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5351 extern_prefix=${sym%%ff_extern*}
5352
5353 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5354
5355 _restrict=
5356 for restrict_keyword in restrict __restrict__ __restrict; do
5357     check_cc <<EOF && _restrict=$restrict_keyword && break
5358 void foo(char * $restrict_keyword p);
5359 EOF
5360 done
5361
5362 check_cc <<EOF && enable pragma_deprecated
5363 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5364 EOF
5365
5366 check_cc <<EOF || die "endian test failed"
5367 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5368 EOF
5369 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5370
5371 check_cc <<EOF && enable const_nan
5372 #include <math.h>
5373 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5374 EOF
5375
5376 if ! enabled ppc64 || enabled bigendian; then
5377     disable vsx
5378 fi
5379
5380 check_gas() {
5381     log "check_gas using '$as' as AS"
5382     # :vararg is used on aarch64, arm and ppc altivec
5383     check_as <<EOF || return 1
5384 .macro m n, y:vararg=0
5385 \n: .int \y
5386 .endm
5387 m x
5388 EOF
5389     # .altmacro is only used in arm asm
5390     ! enabled arm || check_as <<EOF || return 1
5391 .altmacro
5392 EOF
5393     enable gnu_as
5394     return 0
5395 }
5396
5397 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5398     nogas=:
5399     enabled_any arm aarch64 && nogas=die
5400     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5401     as_noop=-v
5402
5403     case $as_type in
5404         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5405         gcc)  gaspp_as_type=gas ;;
5406         *)    gaspp_as_type=$as_type ;;
5407     esac
5408
5409     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5410
5411     test "${as#*gas-preprocessor.pl}" != "$as" ||
5412     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5413         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5414
5415     if ! check_gas ; then
5416         as=${gas:=$as}
5417         check_gas || \
5418             $nogas "GNU assembler not found, install/update gas-preprocessor"
5419     fi
5420
5421     check_as <<EOF && enable as_func
5422 .func test
5423 .endfunc
5424 EOF
5425 fi
5426
5427 check_inline_asm inline_asm_labels '"1:\n"'
5428
5429 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5430
5431 if enabled aarch64; then
5432     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5433     # internal assembler in clang 3.3 does not support this instruction
5434     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5435     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5436
5437     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5438
5439 elif enabled alpha; then
5440
5441     check_cflags -mieee
5442
5443 elif enabled arm; then
5444
5445     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5446
5447     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5448 float func(float a, float b){ return a+b; }
5449 EOF
5450
5451     enabled thumb && check_cflags -mthumb || check_cflags -marm
5452
5453     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5454         enable vfp_args
5455     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5456         enable vfp_args
5457     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5458         case "${cross_prefix:-$cc}" in
5459             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5460             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5461 __asm__ (".eabi_attribute 28, 1");
5462 int main(void) { return 0; }
5463 EOF
5464         esac
5465         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5466     fi
5467
5468     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5469     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5470     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5471     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5472     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5473     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5474     enabled setend  && check_insn setend  'setend be'
5475
5476     [ $target_os = linux ] || [ $target_os = android ] ||
5477         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5478             $ARCH_EXT_LIST_ARM
5479
5480     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5481
5482     check_as <<EOF && enable as_arch_directive
5483 .arch armv7-a
5484 EOF
5485     check_as <<EOF && enable as_fpu_directive
5486 .fpu neon
5487 EOF
5488
5489     # llvm's integrated assembler supports .object_arch from llvm 3.5
5490     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5491         check_as <<EOF && enable as_object_arch
5492 .object_arch armv4
5493 EOF
5494
5495     # MS armasm fails to assemble our PIC constructs
5496     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5497
5498 elif enabled mips; then
5499
5500     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5501     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5502     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5503
5504     # Enable minimum ISA based on selected options
5505     if enabled mips64; then
5506         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5507         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5508         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5509     else
5510         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5511         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5512         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5513         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5514     fi
5515
5516     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5517     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5518     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5519     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5520     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5521
5522     if enabled bigendian && enabled msa; then
5523         disable msa
5524     fi
5525
5526 elif enabled parisc; then
5527
5528     if enabled gcc; then
5529         case $($cc -dumpversion) in
5530             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5531         esac
5532     fi
5533
5534 elif enabled ppc; then
5535
5536     enable local_aligned
5537
5538     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5539     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5540     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5541     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5542
5543     if enabled altivec; then
5544         check_cflags -maltivec -mabi=altivec
5545
5546         # check if our compiler supports Motorola AltiVec C API
5547         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5548                                  vector signed int v2 = (vector signed int) { 1 };
5549                                  v1 = vec_add(v1, v2);" ||
5550             disable altivec
5551
5552         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5553     fi
5554
5555     if enabled vsx; then
5556         check_cflags -mvsx &&
5557         check_code cc altivec.h "int v[4] = { 0 };
5558                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5559             disable vsx
5560     fi
5561
5562     if enabled power8; then
5563         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5564     fi
5565
5566 elif enabled x86; then
5567
5568     check_builtin rdtsc    intrin.h   "__rdtsc()"
5569     check_builtin mm_empty mmintrin.h "_mm_empty()"
5570
5571     enable local_aligned
5572
5573     # check whether EBP is available on x86
5574     # As 'i' is stored on the stack, this program will crash
5575     # if the base pointer is used to access it because the
5576     # base pointer is cleared in the inline assembly code.
5577     check_exec_crash <<EOF && enable ebp_available
5578 volatile int i=0;
5579 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5580 return i;
5581 EOF
5582
5583     # check whether EBX is available on x86
5584     check_inline_asm ebx_available '""::"b"(0)' &&
5585         check_inline_asm ebx_available '"":::"%ebx"'
5586
5587     # check whether xmm clobbers are supported
5588     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5589
5590     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5591         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5592
5593     # check whether binutils is new enough to compile SSSE3/MMXEXT
5594     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5595     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5596
5597     probe_x86asm(){
5598         x86asmexe_probe=$1
5599         if check_cmd $x86asmexe_probe -v; then
5600             x86asmexe=$x86asmexe_probe
5601             x86asm_type=nasm
5602             x86asm_debug="-g -F dwarf"
5603             X86ASMDEP=
5604             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5605         elif check_cmd $x86asmexe_probe --version; then
5606             x86asmexe=$x86asmexe_probe
5607             x86asm_type=yasm
5608             x86asm_debug="-g dwarf2"
5609             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5610             X86ASM_DEPFLAGS=
5611         fi
5612         check_x86asm "movbe ecx, [5]" && enable x86asm
5613     }
5614
5615     if ! disabled_any asm mmx x86asm; then
5616         disable x86asm
5617         for program in $x86asmexe nasm yasm; do
5618             probe_x86asm $program && break
5619         done
5620         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5621         X86ASMFLAGS="-f $objformat"
5622         enabled pic               && append X86ASMFLAGS "-DPIC"
5623         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5624         case "$objformat" in
5625             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5626         esac
5627
5628         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5629         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5630         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5631         check_x86asm "CPU amdnop" || disable cpunop
5632     fi
5633
5634     case "$cpu" in
5635         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5636             disable fast_clz
5637         ;;
5638     esac
5639
5640 fi
5641
5642 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5643
5644 check_ldflags -Wl,--as-needed
5645 check_ldflags -Wl,-z,noexecstack
5646
5647 if ! disabled network; then
5648     check_func getaddrinfo $network_extralibs
5649     check_func inet_aton $network_extralibs
5650
5651     check_type netdb.h "struct addrinfo"
5652     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5653     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5654     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5655     check_type poll.h "struct pollfd"
5656     check_type netinet/sctp.h "struct sctp_event_subscribe"
5657     check_struct "sys/socket.h" "struct msghdr" msg_flags
5658     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5659     check_type netinet/in.h "struct sockaddr_in6"
5660     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5661     check_type "sys/types.h sys/socket.h" socklen_t
5662
5663     # Prefer arpa/inet.h over winsock2
5664     if check_header arpa/inet.h ; then
5665         check_func closesocket
5666     elif check_header winsock2.h ; then
5667         check_func_headers winsock2.h closesocket -lws2 &&
5668             network_extralibs="-lws2" ||
5669         { check_func_headers winsock2.h closesocket -lws2_32 &&
5670             network_extralibs="-lws2_32"; } || disable winsock2_h network
5671         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5672
5673         check_type ws2tcpip.h socklen_t
5674         check_type ws2tcpip.h "struct addrinfo"
5675         check_type ws2tcpip.h "struct group_source_req"
5676         check_type ws2tcpip.h "struct ip_mreq_source"
5677         check_type ws2tcpip.h "struct ipv6_mreq"
5678         check_type winsock2.h "struct pollfd"
5679         check_struct winsock2.h "struct sockaddr" sa_len
5680         check_type ws2tcpip.h "struct sockaddr_in6"
5681         check_type ws2tcpip.h "struct sockaddr_storage"
5682     else
5683         disable network
5684     fi
5685 fi
5686
5687 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5688 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5689 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5690 check_builtin sarestart signal.h "SA_RESTART"
5691 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5692 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5693 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5694 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5695
5696 case "$custom_allocator" in
5697     jemalloc)
5698         # jemalloc by default does not use a prefix
5699         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5700     ;;
5701     tcmalloc)
5702         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5703         malloc_prefix=tc_
5704     ;;
5705 esac
5706
5707 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5708 check_func  ${malloc_prefix}memalign            && enable memalign
5709 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5710
5711 check_func  access
5712 check_func_headers stdlib.h arc4random
5713 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5714 check_func  fcntl
5715 check_func  fork
5716 check_func  gethrtime
5717 check_func  getopt
5718 check_func  getrusage
5719 check_func  gettimeofday
5720 check_func  isatty
5721 check_func  mkstemp
5722 check_func  mmap
5723 check_func  mprotect
5724 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5725 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5726 check_func  sched_getaffinity
5727 check_func  setrlimit
5728 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5729 check_func  strerror_r
5730 check_func  sysconf
5731 check_func  sysctl
5732 check_func  usleep
5733
5734 check_func_headers conio.h kbhit
5735 check_func_headers io.h setmode
5736 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5737 check_func_headers mach/mach_time.h mach_absolute_time
5738 check_func_headers stdlib.h getenv
5739 check_func_headers sys/stat.h lstat
5740
5741 check_func_headers windows.h GetProcessAffinityMask
5742 check_func_headers windows.h GetProcessTimes
5743 check_func_headers windows.h GetSystemTimeAsFileTime
5744 check_func_headers windows.h LoadLibrary
5745 check_func_headers windows.h MapViewOfFile
5746 check_func_headers windows.h PeekNamedPipe
5747 check_func_headers windows.h SetConsoleTextAttribute
5748 check_func_headers windows.h SetConsoleCtrlHandler
5749 check_func_headers windows.h Sleep
5750 check_func_headers windows.h VirtualAlloc
5751 check_struct windows.h "CONDITION_VARIABLE" Ptr
5752 check_func_headers glob.h glob
5753 enabled xlib &&
5754     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5755
5756 check_header direct.h
5757 check_header dirent.h
5758 check_header dxgidebug.h
5759 check_header dxva.h
5760 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5761 check_header io.h
5762 check_header libcrystalhd/libcrystalhd_if.h
5763 check_header malloc.h
5764 check_header net/udplite.h
5765 check_header poll.h
5766 check_header sys/param.h
5767 check_header sys/resource.h
5768 check_header sys/select.h
5769 check_header sys/time.h
5770 check_header sys/un.h
5771 check_header termios.h
5772 check_header unistd.h
5773 check_header valgrind/valgrind.h
5774 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5775 check_header windows.h
5776 check_header X11/extensions/XvMClib.h
5777 check_header asm/types.h
5778
5779 # it seems there are versions of clang in some distros that try to use the
5780 # gcc headers, which explodes for stdatomic
5781 # so we also check that atomics actually work here
5782 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5783
5784 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5785 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5786 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5787 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5788 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5789
5790 enabled appkit       && check_apple_framework AppKit
5791 enabled audiotoolbox && check_apple_framework AudioToolbox
5792 enabled avfoundation && check_apple_framework AVFoundation
5793 enabled coreimage    && check_apple_framework CoreImage
5794 enabled videotoolbox && check_apple_framework VideoToolbox
5795
5796 check_apple_framework CoreFoundation
5797 check_apple_framework CoreMedia
5798 check_apple_framework CoreVideo
5799
5800 enabled avfoundation && {
5801     disable coregraphics applicationservices
5802     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5803     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5804
5805 enabled videotoolbox && {
5806     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5807     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5808 }
5809
5810 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5811
5812 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5813 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5814 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5815 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5816 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5817
5818 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5819 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5820 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5821 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5822 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5823 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5824 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5825 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5826 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5827
5828 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5829
5830 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5831
5832 if ! disabled w32threads && ! enabled pthreads; then
5833     check_func_headers "windows.h process.h" _beginthreadex &&
5834         enable w32threads || disable w32threads
5835     if ! enabled w32threads && enabled winrt; then
5836         check_func_headers "windows.h" CreateThread &&
5837             enable w32threads || disable w32threads
5838     fi
5839 fi
5840
5841 # check for some common methods of building with pthread support
5842 # do this before the optional library checks as some of them require pthreads
5843 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5844     if check_lib pthreads pthread.h pthread_join   -pthread &&
5845        check_lib pthreads pthread.h pthread_create -pthread; then
5846         add_cflags -pthread
5847     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5848          check_lib pthreads pthread.h pthread_create -pthreads; then
5849         add_cflags -pthreads
5850     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5851          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5852         add_cflags -ldl -pthread
5853     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5854          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5855         :
5856     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5857          check_lib pthreads pthread.h pthread_create -lpthread; then
5858         :
5859     elif check_func pthread_join && check_func pthread_create; then
5860         enable pthreads
5861     fi
5862     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5863 fi
5864
5865
5866 if enabled pthreads; then
5867   check_func pthread_cancel $pthreads_extralibs
5868 fi
5869
5870 enabled pthreads &&
5871     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5872
5873 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5874 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5875 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5876
5877 # On some systems dynamic loading requires no extra linker flags
5878 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5879
5880 check_lib libm math.h sin -lm
5881
5882 atan2f_args=2
5883 copysign_args=2
5884 hypot_args=2
5885 ldexpf_args=2
5886 powf_args=2
5887
5888 for func in $MATH_FUNCS; do
5889     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5890 done
5891
5892 for func in $COMPLEX_FUNCS; do
5893     eval check_complexfunc $func \${${func}_args:-1}
5894 done
5895
5896 # these are off by default, so fail if requested and not available
5897 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5898 enabled cuvid             && { enabled cuda ||
5899                                die "ERROR: CUVID requires CUDA"; }
5900 enabled nvdec             && { enabled cuda ||
5901                                die "ERROR: NVDEC hwaccel requires CUDA"; }
5902 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5903 enabled decklink          && { require_header DeckLinkAPI.h &&
5904                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5905 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5906 enabled frei0r            && require_header frei0r.h
5907 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5908 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5909 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5910 enabled ladspa            && require_header ladspa.h
5911 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5912 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5913 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5914 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5915 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5916                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5917                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5918 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5919 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5920 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5921 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5922                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5923                                  warn "using libfdk without pkg-config"; } }
5924 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"
5925 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5926 enabled fontconfig        && enable libfontconfig
5927 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5928 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5929 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5930 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5931                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5932 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5933                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5934                                done || die "ERROR: libgsm not found"; }
5935 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5936 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5937 # While it may appear that require is being used as a pkg-config
5938 # fallback for libmfx, it is actually being used to detect a different
5939 # installation route altogether.  If libmfx is installed via the Intel
5940 # Media SDK or Intel Media Server Studio, these don't come with
5941 # pkg-config support.  Instead, users should make sure that the build
5942 # can find the libraries and headers through other means.
5943 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5944                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5945 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5946 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5947 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5948 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5949                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5950                                die "ERROR: libnpp not found"; }
5951 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5952 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5953 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5954                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5955                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5956                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5957 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5958 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5959                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5960 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5961 enabled libopus           && {
5962     enabled libopus_decoder && {
5963         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5964     }
5965     enabled libopus_encoder && {
5966         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5967     }
5968 }
5969 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5970 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5971 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5972 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5973 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5974 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5975                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5976 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5977 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5978 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5979 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5980 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5981 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5982 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5983                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5984                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5985 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5986 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5987 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5988 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5989 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5990                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5991
5992 enabled libvpx            && {
5993     enabled libvpx_vp8_decoder && {
5994         check_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5995             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5996                 die "ERROR: libvpx decoder version must be >=0.9.1";
5997     }
5998     enabled libvpx_vp8_encoder && {
5999         check_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6000             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
6001                 die "ERROR: libvpx encoder version must be >=0.9.7";
6002     }
6003     enabled libvpx_vp9_decoder && {
6004         check_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6005             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
6006     }
6007     enabled libvpx_vp9_encoder && {
6008         check_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6009             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6010     }
6011     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6012         die "libvpx enabled but no supported decoders found"
6013     fi
6014 }
6015
6016 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6017 enabled libwebp           && {
6018     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6019     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6020 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6021                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6022                                  warn "using libx264 without pkg-config"; } } &&
6023                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6024                              { check_cpp_condition x264.h "X264_MPEG2" &&
6025                                enable libx262; }
6026 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6027                              require_cpp_condition x265.h "X265_BUILD >= 68"
6028 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6029 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6030 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
6031 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6032 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6033                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6034                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6035 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6036 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6037 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6038                                { ! enabled cross_compile &&
6039                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6040                                  add_ldflags -L/opt/vc/lib/ &&
6041                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6042                                die "ERROR: mmal not found" &&
6043                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6044 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6045                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6046                                die "ERROR: openal not found"; } &&
6047                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6048                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6049 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6050                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6051                                die "ERROR: opencl not found"; } &&
6052                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6053                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6054                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6055 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6056                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6057                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6058                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6059                                die "ERROR: opengl not found."
6060                              }
6061 enabled omx               && require_header OMX_Core.h
6062 enabled omx_rpi           && { check_header OMX_Core.h ||
6063                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6064                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6065 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6066                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6067                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6068                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6069                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6070                                die "ERROR: openssl not found"; }
6071 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
6072                                  die "ERROR : Rockchip MPP was not found."; } &&
6073                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
6074                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
6075                                { enabled libdrm ||
6076                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6077                              }
6078
6079 if enabled gcrypt; then
6080     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6081     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6082         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6083         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6084         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6085             die "ERROR: gcrypt not found"
6086         add_cflags $gcrypt_cflags
6087     else
6088         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6089     fi
6090 fi
6091
6092 if enabled sdl2; then
6093     SDL2_CONFIG="${cross_prefix}sdl2-config"
6094     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6095         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6096             disable sdl2
6097     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6098         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6099         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6100         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6101         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6102         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6103             enable sdl2
6104     fi
6105     if test $target_os = "mingw32"; then
6106         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6107     fi
6108 fi
6109
6110 if enabled decklink; then
6111     case $target_os in
6112         mingw32*|mingw64*|win32|win64)
6113             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6114             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6115             ;;
6116     esac
6117 fi
6118
6119 enabled securetransport &&
6120     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6121     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6122         disable securetransport
6123
6124 enabled schannel &&
6125     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6126     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6127     schannel_extralibs="-lsecur32" ||
6128         disable schannel
6129
6130 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6131 enabled makeinfo \
6132     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6133     && enable makeinfo_html || disable makeinfo_html
6134 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6135 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6136 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6137 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6138
6139 # check V4L2 codecs available in the API
6140 check_header linux/fb.h
6141 check_header linux/videodev2.h
6142 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6143 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6144 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6145 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6146 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6147 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6148 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6149 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6150 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6151 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6152 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6153
6154 check_header sys/videoio.h
6155 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6156
6157 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6158 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6159 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6160 # w32api 3.12 had it defined wrong
6161 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6162
6163 check_type "dshow.h" IBaseFilter
6164
6165 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6166 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6167     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6168     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6169     check_header "dev/ic/bt8xx.h"
6170
6171 if check_struct sys/soundcard.h audio_buf_info bytes; then
6172     enable_sanitized sys/soundcard.h
6173 else
6174     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6175     #include <sys/soundcard.h>
6176     audio_buf_info abc;
6177 EOF
6178 fi
6179
6180 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6181     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6182
6183 enabled libjack &&
6184     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6185
6186 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6187
6188 if enabled libcdio; then
6189     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6190     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6191     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6192     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6193     die "ERROR: No usable libcdio/cdparanoia found"
6194 fi
6195
6196 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6197     disable libxcb_shm libxcb_shape libxcb_xfixes
6198
6199 if enabled libxcb; then
6200     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6201     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6202     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6203 fi
6204
6205 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6206
6207 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6208 # the desktop api partition
6209 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6210 #ifdef WINAPI_FAMILY
6211 #include <winapifamily.h>
6212 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6213 #error desktop, not uwp
6214 #else
6215 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6216 #endif
6217 #else
6218 #error no family set
6219 #endif
6220 EOF
6221
6222 enabled vaapi &&
6223     check_lib vaapi va/va.h vaInitialize -lva
6224
6225 enabled vaapi &&
6226     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6227     disable vaapi
6228
6229 enabled vaapi &&
6230     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6231
6232 enabled vaapi &&
6233     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6234
6235 enabled vaapi &&
6236     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6237     enable vaapi_1
6238
6239 enabled vdpau &&
6240     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6241     disable vdpau
6242
6243 enabled vdpau &&
6244     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6245
6246 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6247
6248 if enabled x86; then
6249     case $target_os in
6250         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6251             ;;
6252         *)
6253             disable cuda cuvid nvdec nvenc
6254             ;;
6255     esac
6256 else
6257     disable cuda cuvid nvdec nvenc
6258 fi
6259
6260 enabled nvenc &&
6261     check_cc -I$source_path <<EOF || disable nvenc
6262 #include "compat/nvenc/nvEncodeAPI.h"
6263 NV_ENCODE_API_FUNCTION_LIST flist;
6264 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6265 int main(void) { return 0; }
6266 EOF
6267
6268 # Funny iconv installations are not unusual, so check it after all flags have been set
6269 if enabled libc_iconv; then
6270     check_func_headers iconv.h iconv
6271 elif enabled iconv; then
6272     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6273 fi
6274
6275 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6276
6277 # add some useful compiler flags if supported
6278 check_cflags -Wdeclaration-after-statement
6279 check_cflags -Wall
6280 check_cflags -Wdisabled-optimization
6281 check_cflags -Wpointer-arith
6282 check_cflags -Wredundant-decls
6283 check_cflags -Wwrite-strings
6284 check_cflags -Wtype-limits
6285 check_cflags -Wundef
6286 check_cflags -Wmissing-prototypes
6287 check_cflags -Wno-pointer-to-int-cast
6288 check_cflags -Wstrict-prototypes
6289 check_cflags -Wempty-body
6290
6291 if enabled extra_warnings; then
6292     check_cflags -Wcast-qual
6293     check_cflags -Wextra
6294     check_cflags -Wpedantic
6295 fi
6296
6297 check_disable_warning(){
6298     warning_flag=-W${1#-Wno-}
6299     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6300 }
6301
6302 test_cflags -Werror=unused-command-line-argument &&
6303     append unknown_warning_flags "-Werror=unused-command-line-argument"
6304 test_cflags -Werror=unknown-warning-option &&
6305     append unknown_warning_flags "-Werror=unknown-warning-option"
6306
6307 check_disable_warning -Wno-parentheses
6308 check_disable_warning -Wno-switch
6309 check_disable_warning -Wno-format-zero-length
6310 check_disable_warning -Wno-pointer-sign
6311 check_disable_warning -Wno-unused-const-variable
6312 check_disable_warning -Wno-bool-operation
6313
6314 check_disable_warning_headers(){
6315     warning_flag=-W${1#-Wno-}
6316     test_cflags $warning_flag && add_cflags_headers $1
6317 }
6318
6319 check_disable_warning_headers -Wno-deprecated-declarations
6320 check_disable_warning_headers -Wno-unused-variable
6321
6322 check_cc <<EOF && enable blocks_extension
6323 void (^block)(void);
6324 EOF
6325
6326 # add some linker flags
6327 check_ldflags -Wl,--warn-common
6328 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6329 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6330 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6331
6332 # add some strip flags
6333 check_stripflags -x
6334
6335 enabled neon_clobber_test &&
6336     check_ldflags -Wl,--wrap,avcodec_open2              \
6337                   -Wl,--wrap,avcodec_decode_audio4      \
6338                   -Wl,--wrap,avcodec_decode_video2      \
6339                   -Wl,--wrap,avcodec_decode_subtitle2   \
6340                   -Wl,--wrap,avcodec_encode_audio2      \
6341                   -Wl,--wrap,avcodec_encode_video2      \
6342                   -Wl,--wrap,avcodec_encode_subtitle    \
6343                   -Wl,--wrap,avcodec_send_packet        \
6344                   -Wl,--wrap,avcodec_receive_packet     \
6345                   -Wl,--wrap,avcodec_send_frame         \
6346                   -Wl,--wrap,avcodec_receive_frame      \
6347                   -Wl,--wrap,swr_convert                \
6348                   -Wl,--wrap,avresample_convert ||
6349     disable neon_clobber_test
6350
6351 enabled xmm_clobber_test &&
6352     check_ldflags -Wl,--wrap,avcodec_open2              \
6353                   -Wl,--wrap,avcodec_decode_audio4      \
6354                   -Wl,--wrap,avcodec_decode_video2      \
6355                   -Wl,--wrap,avcodec_decode_subtitle2   \
6356                   -Wl,--wrap,avcodec_encode_audio2      \
6357                   -Wl,--wrap,avcodec_encode_video2      \
6358                   -Wl,--wrap,avcodec_encode_subtitle    \
6359                   -Wl,--wrap,avcodec_send_packet        \
6360                   -Wl,--wrap,avcodec_receive_packet     \
6361                   -Wl,--wrap,avcodec_send_frame         \
6362                   -Wl,--wrap,avcodec_receive_frame      \
6363                   -Wl,--wrap,swr_convert                \
6364                   -Wl,--wrap,avresample_convert         \
6365                   -Wl,--wrap,sws_scale ||
6366     disable xmm_clobber_test
6367
6368 check_ld "cc" <<EOF && enable proper_dce
6369 extern const int array[512];
6370 static inline int func(void) { return array[0]; }
6371 int main(void) { return 0; }
6372 EOF
6373
6374 if enabled proper_dce; then
6375     echo "X { local: *; };" > $TMPV
6376     if test_ldflags -Wl,${version_script},$TMPV; then
6377         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6378         check_cc <<EOF && enable symver_asm_label
6379 void ff_foo(void) __asm__ ("av_foo@VERSION");
6380 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6381 EOF
6382         check_cc <<EOF && enable symver_gnu_asm
6383 __asm__(".symver ff_foo,av_foo@VERSION");
6384 void ff_foo(void) {}
6385 EOF
6386     fi
6387 fi
6388
6389 if [ -z "$optflags" ]; then
6390     if enabled small; then
6391         optflags=$cflags_size
6392     elif enabled optimizations; then
6393         optflags=$cflags_speed
6394     else
6395         optflags=$cflags_noopt
6396     fi
6397 fi
6398
6399 if [ -z "$nvccflags" ]; then
6400     nvccflags=$nvccflags_default
6401 fi
6402
6403 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6404     nvccflags="$nvccflags -m64"
6405 else
6406     nvccflags="$nvccflags -m32"
6407 fi
6408
6409 check_optflags(){
6410     check_cflags "$@"
6411     enabled lto && check_ldflags "$@"
6412 }
6413
6414 check_optflags $optflags
6415 check_optflags -fno-math-errno
6416 check_optflags -fno-signed-zeros
6417
6418 if enabled lto; then
6419     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6420     check_cflags  -flto
6421     check_ldflags -flto $cpuflags
6422     disable inline_asm_direct_symbol_refs
6423 fi
6424
6425 enabled ftrapv && check_cflags -ftrapv
6426
6427 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6428 int x;
6429 EOF
6430
6431
6432 if enabled icc; then
6433     # Just warnings, no remarks
6434     check_cflags -w1
6435     # -wd: Disable following warnings
6436     # 144, 167, 556: -Wno-pointer-sign
6437     # 188: enumerated type mixed with another type
6438     # 1292: attribute "foo" ignored
6439     # 1419: external declaration in primary source file
6440     # 10006: ignoring unknown option -fno-signed-zeros
6441     # 10148: ignoring unknown option -Wno-parentheses
6442     # 10156: ignoring option '-W'; no argument required
6443     # 13200: No EMMS instruction before call to function
6444     # 13203: No EMMS instruction before return from function
6445     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6446     # 11030: Warning unknown option --as-needed
6447     # 10156: ignoring option '-export'; no argument required
6448     check_ldflags -wd10156,11030
6449     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6450     enable ebp_available
6451     # The test above does not test linking
6452     enabled lto && disable symver_asm_label
6453     if enabled x86_32; then
6454         icc_version=$($cc -dumpversion)
6455         test ${icc_version%%.*} -ge 11 &&
6456             check_cflags -falign-stack=maintain-16-byte ||
6457             disable aligned_stack
6458     fi
6459 elif enabled gcc; then
6460     check_optflags -fno-tree-vectorize
6461     check_cflags -Werror=format-security
6462     check_cflags -Werror=implicit-function-declaration
6463     check_cflags -Werror=missing-prototypes
6464     check_cflags -Werror=return-type
6465     check_cflags -Werror=vla
6466     check_cflags -Wformat
6467     check_cflags -fdiagnostics-color=auto
6468     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6469 elif enabled llvm_gcc; then
6470     check_cflags -mllvm -stack-alignment=16
6471 elif enabled clang; then
6472     check_cflags -mllvm -stack-alignment=16
6473     check_cflags -mstack-alignment=16
6474     check_cflags -Qunused-arguments
6475     check_cflags -Werror=implicit-function-declaration
6476     check_cflags -Werror=missing-prototypes
6477     check_cflags -Werror=return-type
6478 elif enabled cparser; then
6479     add_cflags -Wno-missing-variable-declarations
6480     add_cflags -Wno-empty-statement
6481 elif enabled armcc; then
6482     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6483     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6484     # 2523: use of inline assembly is deprecated
6485     add_cflags -W${armcc_opt},--diag_suppress=2523
6486     add_cflags -W${armcc_opt},--diag_suppress=1207
6487     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6488     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6489     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6490     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6491 elif enabled tms470; then
6492     add_cflags -pds=824 -pds=837
6493     disable inline_asm
6494 elif enabled pathscale; then
6495     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6496     disable inline_asm
6497 elif enabled_any msvc icl; then
6498     enabled x86_32 && disable aligned_stack
6499     enabled_all x86_32 debug && add_cflags -Oy-
6500     enabled debug && add_ldflags -debug
6501     enable pragma_deprecated
6502     if enabled icl; then
6503         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6504         # (correctly) on icl 13.x.
6505         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6506             add_cflags -Qansi-alias
6507         # Some inline asm is not compilable in debug
6508         if enabled debug; then
6509             disable ebp_available
6510             disable ebx_available
6511         fi
6512     fi
6513     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6514     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6515     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6516     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6517     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6518     # MSVC 2013 and newer can handle it fine.
6519     # If this declspec fails, force including stdlib.h before the restrict redefinition
6520     # happens in config.h.
6521     if [ $_restrict != restrict ]; then
6522         check_cc <<EOF || add_cflags -FIstdlib.h
6523 __declspec($_restrict) void* foo(int);
6524 EOF
6525     fi
6526     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6527     # Issue has been fixed in MSVC v19.00.24218.
6528     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6529         check_cflags -d2SSAOptimizer-
6530     # enable utf-8 source processing on VS2015 U2 and newer
6531     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6532         add_cflags -utf-8
6533 fi
6534
6535 for pfx in "" host_; do
6536     varname=${pfx%_}cc_type
6537     eval "type=\$$varname"
6538     if [ "$type" = "msvc" ]; then
6539         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6540 static inline int foo(int a) { return a; }
6541 EOF
6542     fi
6543 done
6544
6545 case $as_type in
6546     clang)
6547         add_asflags -Qunused-arguments
6548     ;;
6549 esac
6550
6551 case $ld_type in
6552     clang)
6553         check_ldflags -Qunused-arguments
6554     ;;
6555 esac
6556
6557 enable frame_thread_encoder
6558
6559 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6560
6561 check_deps $CONFIG_LIST       \
6562            $CONFIG_EXTRA      \
6563            $HAVE_LIST         \
6564            $ALL_COMPONENTS    \
6565
6566 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"
6567
6568
6569 if test $target_os = "haiku"; then
6570     disable memalign
6571     disable posix_memalign
6572 fi
6573
6574 flatten_extralibs(){
6575     unset nested_entries
6576     list_name=$1
6577     eval list=\$${1}
6578     for entry in $list; do
6579         entry_copy=$entry
6580         resolve entry_copy
6581         append nested_entries $(filter '*_extralibs' $entry_copy)
6582         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6583         eval $entry="\$flat_entries"
6584     done
6585     append $list_name "$nested_entries"
6586
6587     resolve nested_entries
6588     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6589         flatten_extralibs $list_name
6590     fi
6591 }
6592
6593 for linkunit in $LIBRARY_LIST; do
6594     unset current_extralibs
6595     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6596     for comp in ${components}; do
6597         enabled $comp || continue
6598         comp_extralibs="${comp}_extralibs"
6599         append current_extralibs $comp_extralibs
6600     done
6601     eval prepend ${linkunit}_extralibs $current_extralibs
6602 done
6603
6604 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6605     flatten_extralibs ${linkunit}_extralibs
6606     unique  ${linkunit}_extralibs
6607     resolve ${linkunit}_extralibs
6608     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
6609 done
6610
6611 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6612
6613 for thread in $THREADS_LIST; do
6614     if enabled $thread; then
6615         test -n "$thread_type" &&
6616             die "ERROR: Only one thread type must be selected." ||
6617             thread_type="$thread"
6618     fi
6619 done
6620
6621 if disabled stdatomic; then
6622     if enabled atomics_gcc; then
6623         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6624     elif enabled atomics_win32; then
6625         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6626     elif enabled atomics_suncc; then
6627         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6628     elif enabled pthreads; then
6629         add_compat atomics/pthread/stdatomic.o
6630         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6631     else
6632         enabled threads && die "Threading is enabled, but no atomics are available"
6633         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6634     fi
6635 fi
6636
6637 # Check if requested libraries were found.
6638 for lib in $AUTODETECT_LIBS; do
6639     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6640 done
6641
6642 enabled zlib && add_cppflags -DZLIB_CONST
6643
6644 # conditional library dependencies, in linking order
6645 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6646 enabled afir_filter         && prepend avfilter_deps "avcodec"
6647 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6648 enabled aresample_filter    && prepend avfilter_deps "swresample"
6649 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6650 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6651 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6652 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6653 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6654 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6655 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6656 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6657 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6658 enabled pan_filter          && prepend avfilter_deps "swresample"
6659 enabled pp_filter           && prepend avfilter_deps "postproc"
6660 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6661 enabled resample_filter && prepend avfilter_deps "avresample"
6662 enabled sab_filter          && prepend avfilter_deps "swscale"
6663 enabled scale_filter    && prepend avfilter_deps "swscale"
6664 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6665 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6666 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6667 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6668 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6669 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6670 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6671 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6672 enabled spp_filter          && prepend avfilter_deps "avcodec"
6673 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6674 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6675 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6676
6677 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6678
6679 #FIXME
6680 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6681
6682 enabled opus_decoder    && prepend avcodec_deps "swresample"
6683
6684 expand_deps(){
6685     lib_deps=${1}_deps
6686     eval "deps=\$$lib_deps"
6687     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6688     unique $lib_deps
6689 }
6690
6691 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6692 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6693
6694 map 'expand_deps $v' $LIBRARY_LIST
6695
6696 license="LGPL version 2.1 or later"
6697 if enabled nonfree; then
6698     license="nonfree and unredistributable"
6699 elif enabled gplv3; then
6700     license="GPL version 3 or later"
6701 elif enabled lgplv3; then
6702     license="LGPL version 3 or later"
6703 elif enabled gpl; then
6704     license="GPL version 2 or later"
6705 fi
6706
6707 if test "$quiet" != "yes"; then
6708
6709 echo "install prefix            $prefix"
6710 echo "source path               $source_path"
6711 echo "C compiler                $cc"
6712 echo "C library                 $libc_type"
6713 if test "$host_cc" != "$cc"; then
6714     echo "host C compiler           $host_cc"
6715     echo "host C library            $host_libc_type"
6716 fi
6717 echo "ARCH                      $arch ($cpu)"
6718 if test "$build_suffix" != ""; then
6719     echo "build suffix              $build_suffix"
6720 fi
6721 if test "$progs_suffix" != ""; then
6722     echo "progs suffix              $progs_suffix"
6723 fi
6724 if test "$extra_version" != ""; then
6725     echo "version string suffix     $extra_version"
6726 fi
6727 echo "big-endian                ${bigendian-no}"
6728 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6729 if enabled x86; then
6730     echo "standalone assembly       ${x86asm-no}"
6731     echo "x86 assembler             ${x86asmexe}"
6732     echo "MMX enabled               ${mmx-no}"
6733     echo "MMXEXT enabled            ${mmxext-no}"
6734     echo "3DNow! enabled            ${amd3dnow-no}"
6735     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6736     echo "SSE enabled               ${sse-no}"
6737     echo "SSSE3 enabled             ${ssse3-no}"
6738     echo "AESNI enabled             ${aesni-no}"
6739     echo "AVX enabled               ${avx-no}"
6740     echo "AVX2 enabled              ${avx2-no}"
6741     echo "XOP enabled               ${xop-no}"
6742     echo "FMA3 enabled              ${fma3-no}"
6743     echo "FMA4 enabled              ${fma4-no}"
6744     echo "i686 features enabled     ${i686-no}"
6745     echo "CMOV is fast              ${fast_cmov-no}"
6746     echo "EBX available             ${ebx_available-no}"
6747     echo "EBP available             ${ebp_available-no}"
6748 fi
6749 if enabled aarch64; then
6750     echo "NEON enabled              ${neon-no}"
6751     echo "VFP enabled               ${vfp-no}"
6752 fi
6753 if enabled arm; then
6754     echo "ARMv5TE enabled           ${armv5te-no}"
6755     echo "ARMv6 enabled             ${armv6-no}"
6756     echo "ARMv6T2 enabled           ${armv6t2-no}"
6757     echo "VFP enabled               ${vfp-no}"
6758     echo "NEON enabled              ${neon-no}"
6759     echo "THUMB enabled             ${thumb-no}"
6760 fi
6761 if enabled mips; then
6762     echo "MIPS FPU enabled          ${mipsfpu-no}"
6763     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6764     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6765     echo "MIPS MSA enabled          ${msa-no}"
6766     echo "LOONGSON MMI enabled      ${mmi-no}"
6767 fi
6768 if enabled ppc; then
6769     echo "AltiVec enabled           ${altivec-no}"
6770     echo "VSX enabled               ${vsx-no}"
6771     echo "POWER8 enabled            ${power8-no}"
6772     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6773     echo "dcbzl available           ${dcbzl-no}"
6774 fi
6775 echo "debug symbols             ${debug-no}"
6776 echo "strip symbols             ${stripping-no}"
6777 echo "optimize for size         ${small-no}"
6778 echo "optimizations             ${optimizations-no}"
6779 echo "static                    ${static-no}"
6780 echo "shared                    ${shared-no}"
6781 echo "postprocessing support    ${postproc-no}"
6782 echo "network support           ${network-no}"
6783 echo "threading support         ${thread_type-no}"
6784 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6785 echo "texi2html enabled         ${texi2html-no}"
6786 echo "perl enabled              ${perl-no}"
6787 echo "pod2man enabled           ${pod2man-no}"
6788 echo "makeinfo enabled          ${makeinfo-no}"
6789 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6790 test -n "$random_seed" &&
6791     echo "random seed               ${random_seed}"
6792 echo
6793
6794 echo "External libraries:"
6795 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6796 echo
6797
6798 echo "External libraries providing hardware acceleration:"
6799 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6800 echo
6801
6802 echo "Libraries:"
6803 print_enabled '' $LIBRARY_LIST | print_in_columns
6804 echo
6805
6806 echo "Programs:"
6807 print_enabled '' $PROGRAM_LIST | print_in_columns
6808 echo
6809
6810 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6811     echo "Enabled ${type}s:"
6812     eval list=\$$(toupper $type)_LIST
6813     print_enabled '_*' $list | print_in_columns
6814     echo
6815 done
6816
6817 if test -n "$ignore_tests"; then
6818     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6819     echo "Ignored FATE tests:"
6820     echo $ignore_tests | print_in_columns
6821     echo
6822 fi
6823
6824 echo "License: $license"
6825
6826 echo "Creating configuration files ..."
6827
6828 fi # test "$quiet" != "yes"
6829
6830 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6831
6832 enabled stripping || strip="echo skipping strip"
6833 enabled stripping || striptype=""
6834
6835 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6836
6837 cat > ffbuild/config.mak <<EOF
6838 # Automatically generated by configure - do not modify!
6839 ifndef FFMPEG_CONFIG_MAK
6840 FFMPEG_CONFIG_MAK=1
6841 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6842 prefix=$prefix
6843 LIBDIR=\$(DESTDIR)$libdir
6844 SHLIBDIR=\$(DESTDIR)$shlibdir
6845 INCDIR=\$(DESTDIR)$incdir
6846 BINDIR=\$(DESTDIR)$bindir
6847 DATADIR=\$(DESTDIR)$datadir
6848 DOCDIR=\$(DESTDIR)$docdir
6849 MANDIR=\$(DESTDIR)$mandir
6850 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6851 INSTALL_NAME_DIR=$install_name_dir
6852 SRC_PATH=$source_path
6853 SRC_LINK=$source_link
6854 ifndef MAIN_MAKEFILE
6855 SRC_PATH:=\$(SRC_PATH:.%=..%)
6856 endif
6857 CC_IDENT=$cc_ident
6858 ARCH=$arch
6859 INTRINSICS=$intrinsics
6860 CC=$cc
6861 CXX=$cxx
6862 AS=$as
6863 OBJCC=$objcc
6864 LD=$ld
6865 DEPCC=$dep_cc
6866 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6867 DEPAS=$as
6868 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6869 X86ASM=$x86asmexe
6870 DEPX86ASM=$x86asmexe
6871 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6872 AR=$ar
6873 ARFLAGS=$arflags
6874 AR_O=$ar_o
6875 AR_CMD=$ar
6876 NM_CMD=$nm
6877 RANLIB=$ranlib
6878 STRIP=$strip
6879 STRIPTYPE=$striptype
6880 NVCC=$nvcc
6881 CP=cp -p
6882 LN_S=$ln_s
6883 CPPFLAGS=$CPPFLAGS
6884 CFLAGS=$CFLAGS
6885 CXXFLAGS=$CXXFLAGS
6886 OBJCFLAGS=$OBJCFLAGS
6887 ASFLAGS=$ASFLAGS
6888 NVCCFLAGS=$nvccflags
6889 AS_C=$AS_C
6890 AS_O=$AS_O
6891 OBJCC_C=$OBJCC_C
6892 OBJCC_E=$OBJCC_E
6893 OBJCC_O=$OBJCC_O
6894 CC_C=$CC_C
6895 CC_E=$CC_E
6896 CC_O=$CC_O
6897 CXX_C=$CXX_C
6898 CXX_O=$CXX_O
6899 NVCC_C=$NVCC_C
6900 NVCC_O=$NVCC_O
6901 LD_O=$LD_O
6902 X86ASM_O=$X86ASM_O
6903 LD_LIB=$LD_LIB
6904 LD_PATH=$LD_PATH
6905 DLLTOOL=$dlltool
6906 WINDRES=$windres
6907 DEPWINDRES=$dep_cc
6908 DOXYGEN=$doxygen
6909 LDFLAGS=$LDFLAGS
6910 LDEXEFLAGS=$LDEXEFLAGS
6911 LDSOFLAGS=$LDSOFLAGS
6912 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6913 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6914 X86ASMFLAGS=$X86ASMFLAGS
6915 BUILDSUF=$build_suffix
6916 PROGSSUF=$progs_suffix
6917 FULLNAME=$FULLNAME
6918 LIBPREF=$LIBPREF
6919 LIBSUF=$LIBSUF
6920 LIBNAME=$LIBNAME
6921 SLIBPREF=$SLIBPREF
6922 SLIBSUF=$SLIBSUF
6923 EXESUF=$EXESUF
6924 EXTRA_VERSION=$extra_version
6925 CCDEP=$CCDEP
6926 CXXDEP=$CXXDEP
6927 CCDEP_FLAGS=$CCDEP_FLAGS
6928 ASDEP=$ASDEP
6929 ASDEP_FLAGS=$ASDEP_FLAGS
6930 X86ASMDEP=$X86ASMDEP
6931 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6932 CC_DEPFLAGS=$CC_DEPFLAGS
6933 AS_DEPFLAGS=$AS_DEPFLAGS
6934 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6935 HOSTCC=$host_cc
6936 HOSTLD=$host_ld
6937 HOSTCFLAGS=$host_cflags
6938 HOSTCPPFLAGS=$host_cppflags
6939 HOSTEXESUF=$HOSTEXESUF
6940 HOSTLDFLAGS=$host_ldflags
6941 HOSTEXTRALIBS=$host_extralibs
6942 DEPHOSTCC=$host_cc
6943 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6944 HOSTCCDEP=$HOSTCCDEP
6945 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6946 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6947 HOSTCC_C=$HOSTCC_C
6948 HOSTCC_O=$HOSTCC_O
6949 HOSTLD_O=$HOSTLD_O
6950 TARGET_EXEC=$target_exec $target_exec_args
6951 TARGET_PATH=$target_path
6952 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6953 CFLAGS-ffplay=${sdl2_cflags}
6954 CFLAGS_HEADERS=$CFLAGS_HEADERS
6955 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6956 EXTRALIBS=$extralibs
6957 COMPAT_OBJS=$compat_objs
6958 INSTALL=$install
6959 LIBTARGET=${LIBTARGET}
6960 SLIBNAME=${SLIBNAME}
6961 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6962 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6963 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6964 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6965 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6966 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6967 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6968 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6969 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6970 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6971 NOREDZONE_FLAGS=$noredzone_flags
6972 LIBFUZZER_PATH=$libfuzzer_path
6973 IGNORE_TESTS=$ignore_tests
6974 EOF
6975
6976 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6977
6978 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6979     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6980 done
6981
6982 cat > $TMPH <<EOF
6983 /* Automatically generated by configure - do not modify! */
6984 #ifndef FFMPEG_CONFIG_H
6985 #define FFMPEG_CONFIG_H
6986 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6987 #define FFMPEG_LICENSE "$(c_escape $license)"
6988 #define CONFIG_THIS_YEAR 2017
6989 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6990 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6991 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6992 #define av_restrict $_restrict
6993 #define EXTERN_PREFIX "${extern_prefix}"
6994 #define EXTERN_ASM ${extern_prefix}
6995 #define BUILDSUF "$build_suffix"
6996 #define SLIBSUF "$SLIBSUF"
6997 #define HAVE_MMX2 HAVE_MMXEXT
6998 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6999 EOF
7000
7001 test -n "$assert_level" &&
7002     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7003
7004 test -n "$malloc_prefix" &&
7005     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7006
7007 if enabled x86asm; then
7008     append config_files $TMPASM
7009     printf '' >$TMPASM
7010 fi
7011
7012 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7013
7014
7015 mkdir -p doc
7016 mkdir -p tests
7017 mkdir -p tests/api
7018 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7019
7020 print_config ARCH_   "$config_files" $ARCH_LIST
7021 print_config HAVE_   "$config_files" $HAVE_LIST
7022 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7023                                      $CONFIG_EXTRA      \
7024                                      $ALL_COMPONENTS    \
7025
7026 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7027 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7028
7029 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7030 cp_if_changed $TMPH config.h
7031 touch ffbuild/.config
7032
7033 enabled x86asm && cp_if_changed $TMPASM config.asm
7034
7035 cat > $TMPH <<EOF
7036 /* Generated by ffconf */
7037 #ifndef AVUTIL_AVCONFIG_H
7038 #define AVUTIL_AVCONFIG_H
7039 EOF
7040
7041 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7042
7043 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7044
7045 cp_if_changed $TMPH libavutil/avconfig.h
7046
7047 # generate the lists of enabled components
7048 print_enabled_components(){
7049     file=$1
7050     struct_name=$2
7051     name=$3
7052     shift 3
7053     echo "static const $struct_name * const $name[] = {" > $TMPH
7054     for c in $*; do
7055         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7056     done
7057     echo "    NULL };" >> $TMPH
7058     cp_if_changed $TMPH $file
7059 }
7060
7061 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7062 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7063
7064 if test -n "$WARNINGS"; then
7065     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7066     enabled fatal_warnings && exit 1
7067 fi
7068
7069 # Settings for pkg-config files
7070
7071 cat > ffbuild/config.sh <<EOF
7072 # Automatically generated by configure - do not modify!
7073 shared=$shared
7074 build_suffix=$build_suffix
7075 prefix=$prefix
7076 libdir=$libdir
7077 incdir=$incdir
7078 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7079 source_path=${source_path}
7080 LIBPREF=${LIBPREF}
7081 LIBSUF=${LIBSUF}
7082 extralibs_avutil="$avutil_extralibs"
7083 extralibs_avcodec="$avcodec_extralibs"
7084 extralibs_avformat="$avformat_extralibs"
7085 extralibs_avdevice="$avdevice_extralibs"
7086 extralibs_avfilter="$avfilter_extralibs"
7087 extralibs_avresample="$avresample_extralibs"
7088 extralibs_postproc="$postproc_extralibs"
7089 extralibs_swscale="$swscale_extralibs"
7090 extralibs_swresample="$swresample_extralibs"
7091 EOF
7092
7093 for lib in $LIBRARY_LIST; do
7094     lib_deps="$(eval echo \$${lib}_deps)"
7095     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7096 done