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

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