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   --disable-jack           disable libjack support [autodetect]
 221   --enable-jni             enable JNI support [no]
 222   --enable-ladspa          enable LADSPA audio filtering [no]
 223   --enable-libass          enable libass subtitles rendering,
 224                            needed for subtitles and ass filter [no]
 225   --enable-libbluray       enable BluRay reading using libbluray [no]
 226   --enable-libbs2b         enable bs2b DSP library [no]
 227   --enable-libcaca         enable textual display using libcaca [no]
 228   --enable-libcelt         enable CELT decoding via libcelt [no]
 229   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 230   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 231                            and libraw1394 [no]
 232   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 233   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 234   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 235   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 236   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 237   --enable-libgme          enable Game Music Emu via libgme [no]
 238   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 239   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 240   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --disable-lzma           disable lzma [autodetect]
 287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 289   --enable-mediacodec      enable Android MediaCodec support [no]
 290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 291   --enable-openal          enable OpenAL 1.1 capture support [no]
 292   --enable-opencl          enable OpenCL code
 293   --enable-opengl          enable OpenGL rendering [no]
 294   --enable-openssl         enable openssl, needed for https support
 295                            if gnutls is not used [no]
 296   --disable-sndio          disable sndio support [autodetect]
 297   --disable-schannel       disable SChannel SSP, needed for TLS support on
 298                            Windows if openssl and gnutls are not used [autodetect]
 299   --disable-sdl2           disable sdl2 [autodetect]
 300   --disable-securetransport disable Secure Transport, needed for TLS support
 301                            on OSX if openssl and gnutls are not used [autodetect]
 302   --disable-xlib           disable xlib [autodetect]
 303   --disable-zlib           disable zlib [autodetect]
 304
 305   The following libraries provide various hardware acceleration features:
 306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 312   --enable-libdrm          enable DRM code (Linux) [no]
 313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 316   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 317   --enable-omx             enable OpenMAX IL code [no]
 318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 319   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 320   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 321   --disable-vda            disable Apple Video Decode Acceleration 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 [$LDEXEFLAGS]
 369   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 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_safe(){
 589     var=$1
 590     shift
 591     eval $(sanitize_var_name "$var")='$*'
 592 }
 593
 594 get_safe(){
 595     eval echo \$$(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_safe(){
 641     for var; do
 642         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 643     done
 644 }
 645
 646 disable_safe(){
 647     for var; do
 648         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 649     done
 650 }
 651
 652 do_enable_deep(){
 653     for var; do
 654         enabled $var && continue
 655         eval sel="\$${var}_select"
 656         eval sgs="\$${var}_suggest"
 657         pushvar var sgs
 658         enable_deep $sel
 659         popvar sgs
 660         enable_deep_weak $sgs
 661         popvar var
 662     done
 663 }
 664
 665 enable_deep(){
 666     do_enable_deep $*
 667     enable $*
 668 }
 669
 670 enable_deep_weak(){
 671     for var; do
 672         disabled $var && continue
 673         pushvar var
 674         do_enable_deep $var
 675         popvar var
 676         enable_weak $var
 677     done
 678 }
 679
 680 requested(){
 681     test "${1#!}" = "$1" && op='=' || op=!=
 682     eval test "x\$${1#!}_requested" $op "xyes"
 683 }
 684
 685 enabled(){
 686     test "${1#!}" = "$1" && op='=' || op=!=
 687     eval test "x\$${1#!}" $op "xyes"
 688 }
 689
 690 disabled(){
 691     test "${1#!}" = "$1" && op='=' || op=!=
 692     eval test "x\$${1#!}" $op "xno"
 693 }
 694
 695 enabled_all(){
 696     for opt; do
 697         enabled $opt || return 1
 698     done
 699 }
 700
 701 disabled_all(){
 702     for opt; do
 703         disabled $opt || return 1
 704     done
 705 }
 706
 707 enabled_any(){
 708     for opt; do
 709         enabled $opt && return 0
 710     done
 711 }
 712
 713 disabled_any(){
 714     for opt; do
 715         disabled $opt && return 0
 716     done
 717     return 1
 718 }
 719
 720 set_default(){
 721     for opt; do
 722         eval : \${$opt:=\$${opt}_default}
 723     done
 724 }
 725
 726 is_in(){
 727     value=$1
 728     shift
 729     for var in $*; do
 730         [ $var = $value ] && return 0
 731     done
 732     return 1
 733 }
 734
 735 check_deps(){
 736     for cfg; do
 737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 738         disabled ${cfg}_checking && continue
 739         enable ${cfg}_checking
 740
 741         eval dep_all="\$${cfg}_deps"
 742         eval dep_any="\$${cfg}_deps_any"
 743         eval dep_con="\$${cfg}_conflict"
 744         eval dep_sel="\$${cfg}_select"
 745         eval dep_sgs="\$${cfg}_suggest"
 746         eval dep_ifa="\$${cfg}_if"
 747         eval dep_ifn="\$${cfg}_if_any"
 748
 749         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 750         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 751         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 752
 753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 757         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 758         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 759
 760         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 761
 762         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 763             # filter out library deps, these do not belong in extralibs
 764             is_in $dep $LIBRARY_LIST && continue
 765             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 766         done
 767
 768         disable ${cfg}_checking
 769     done
 770 }
 771
 772 print_config(){
 773     pfx=$1
 774     files=$2
 775     shift 2
 776     map 'eval echo "$v \${$v:-no}"' "$@" |
 777     awk "BEGIN { split(\"$files\", files) }
 778         {
 779             c = \"$pfx\" toupper(\$1);
 780             v = \$2;
 781             sub(/yes/, 1, v);
 782             sub(/no/,  0, v);
 783             for (f in files) {
 784                 file = files[f];
 785                 if (file ~ /\\.h\$/) {
 786                     printf(\"#define %s %d\\n\", c, v) >>file;
 787                 } else if (file ~ /\\.asm\$/) {
 788                     printf(\"%%define %s %d\\n\", c, v) >>file;
 789                 } else if (file ~ /\\.mak\$/) {
 790                     n = -v ? \"\" : \"!\";
 791                     printf(\"%s%s=yes\\n\", n, c) >>file;
 792                 } else if (file ~ /\\.texi\$/) {
 793                     pre = -v ? \"\" : \"@c \";
 794                     yesno = \$2;
 795                     c2 = tolower(c);
 796                     gsub(/_/, \"-\", c2);
 797                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 798                 }
 799             }
 800         }"
 801 }
 802
 803 print_enabled(){
 804     suf=$1
 805     shift
 806     for v; do
 807         enabled $v && printf "%s\n" ${v%$suf}
 808     done
 809 }
 810
 811 append(){
 812     var=$1
 813     shift
 814     eval "$var=\"\$$var $*\""
 815 }
 816
 817 prepend(){
 818     var=$1
 819     shift
 820     eval "$var=\"$* \$$var\""
 821 }
 822
 823 unique(){
 824     var=$1
 825     uniq_list=""
 826     for tok in $(eval echo \$$var); do
 827         uniq_list="$(filter_out $tok $uniq_list) $tok"
 828     done
 829     eval "$var=\"${uniq_list}\""
 830 }
 831
 832 resolve(){
 833     var=$1
 834     tmpvar=
 835     for entry in $(eval echo \$$var); do
 836         tmpvar="$tmpvar $(eval echo \$${entry})"
 837     done
 838     eval "$var=\"${tmpvar}\""
 839 }
 840
 841 add_cppflags(){
 842     append CPPFLAGS "$@"
 843 }
 844
 845 add_cflags(){
 846     append CFLAGS $($cflags_filter "$@")
 847 }
 848
 849 add_cflags_headers(){
 850     append CFLAGS_HEADERS $($cflags_filter "$@")
 851 }
 852
 853 add_cxxflags(){
 854     append CXXFLAGS $($cflags_filter "$@")
 855 }
 856
 857 add_asflags(){
 858     append ASFLAGS $($asflags_filter "$@")
 859 }
 860
 861 add_objcflags(){
 862     append OBJCFLAGS $($objcflags_filter "$@")
 863 }
 864
 865 add_ldflags(){
 866     append LDFLAGS $($ldflags_filter "$@")
 867 }
 868
 869 add_ldexeflags(){
 870     append LDEXEFLAGS $($ldflags_filter "$@")
 871 }
 872
 873 add_ldlibflags(){
 874     append LDLIBFLAGS $($ldflags_filter "$@")
 875 }
 876
 877 add_stripflags(){
 878     append ASMSTRIPFLAGS "$@"
 879 }
 880
 881 add_extralibs(){
 882     prepend extralibs $($ldflags_filter "$@")
 883 }
 884
 885 add_host_cppflags(){
 886     append host_cppflags "$@"
 887 }
 888
 889 add_host_cflags(){
 890     append host_cflags $($host_cflags_filter "$@")
 891 }
 892
 893 add_host_ldflags(){
 894     append host_ldflags $($host_ldflags_filter "$@")
 895 }
 896
 897 add_compat(){
 898     append compat_objs $1
 899     shift
 900     map 'add_cppflags -D$v' "$@"
 901 }
 902
 903 check_cmd(){
 904     log "$@"
 905     "$@" >> $logfile 2>&1
 906 }
 907
 908 check_stat(){
 909     log check_stat "$@"
 910     stat "$1" >> $logfile 2>&1
 911 }
 912
 913 cc_o(){
 914     eval printf '%s\\n' $CC_O
 915 }
 916
 917 cc_e(){
 918     eval printf '%s\\n' $CC_E
 919 }
 920
 921 check_cc(){
 922     log check_cc "$@"
 923     cat > $TMPC
 924     log_file $TMPC
 925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 926 }
 927
 928 check_cxx(){
 929     log check_cxx "$@"
 930     cat > $TMPCPP
 931     log_file $TMPCPP
 932     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 933 }
 934
 935 check_objcc(){
 936     log check_objcc "$@"
 937     cat > $TMPM
 938     log_file $TMPM
 939     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 940 }
 941
 942 check_cpp(){
 943     log check_cpp "$@"
 944     cat > $TMPC
 945     log_file $TMPC
 946     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 947 }
 948
 949 as_o(){
 950     eval printf '%s\\n' $AS_O
 951 }
 952
 953 check_as(){
 954     log check_as "$@"
 955     cat > $TMPS
 956     log_file $TMPS
 957     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 958 }
 959
 960 check_inline_asm(){
 961     log check_inline_asm "$@"
 962     name="$1"
 963     code="$2"
 964     shift 2
 965     disable $name
 966     check_cc "$@" <<EOF && enable $name
 967 void foo(void){ __asm__ volatile($code); }
 968 EOF
 969 }
 970
 971 check_inline_asm_flags(){
 972     log check_inline_asm_flags "$@"
 973     name="$1"
 974     code="$2"
 975     flags=''
 976     shift 2
 977     while [ "$1" != "" ]; do
 978       append flags $1
 979       shift
 980     done;
 981     disable $name
 982     cat > $TMPC <<EOF
 983 void foo(void){ __asm__ volatile($code); }
 984 EOF
 985     log_file $TMPC
 986     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 987     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 988 }
 989
 990 check_insn(){
 991     log check_insn "$@"
 992     check_inline_asm ${1}_inline "\"$2\""
 993     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 994 }
 995
 996 check_x86asm(){
 997     log check_x86asm "$@"
 998     echo "$1" > $TMPS
 999     log_file $TMPS
1000     shift 1
1001     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 check_ld(){
1009     log check_ld "$@"
1010     type=$1
1011     shift 1
1012     flags=$(filter_out '-l*|*.so' $@)
1013     libs=$(filter '-l*|*.so' $@)
1014     check_$type $($cflags_filter $flags) || return
1015     flags=$($ldflags_filter $flags)
1016     libs=$($ldflags_filter $libs)
1017     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1018 }
1019
1020 print_include(){
1021     hdr=$1
1022     test "${hdr%.h}" = "${hdr}" &&
1023         echo "#include $hdr"    ||
1024         echo "#include <$hdr>"
1025 }
1026
1027 check_code(){
1028     log check_code "$@"
1029     check=$1
1030     headers=$2
1031     code=$3
1032     shift 3
1033     {
1034         for hdr in $headers; do
1035             print_include $hdr
1036         done
1037         echo "int main(void) { $code; return 0; }"
1038     } | check_$check "$@"
1039 }
1040
1041 check_cppflags(){
1042     log check_cppflags "$@"
1043     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1044 #include <stdlib.h>
1045 EOF
1046 }
1047
1048 test_cflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_cflags(){
1057     log check_cflags "$@"
1058     test_cflags "$@" && add_cflags "$@"
1059 }
1060
1061 check_cxxflags(){
1062     log check_cxxflags "$@"
1063     set -- $($cflags_filter "$@")
1064     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1065 int x;
1066 EOF
1067 }
1068
1069 test_objcflags(){
1070     log test_objcflags "$@"
1071     set -- $($objcflags_filter "$@")
1072     check_objcc "$@" <<EOF
1073 int x;
1074 EOF
1075 }
1076
1077 check_objcflags(){
1078     log check_objcflags "$@"
1079     test_objcflags "$@" && add_objcflags "$@"
1080 }
1081
1082 test_ldflags(){
1083     log test_ldflags "$@"
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     header=$1
1111     shift
1112     disable_safe $header
1113     check_cpp "$@" <<EOF && enable_safe $header
1114 #include <$header>
1115 int x;
1116 EOF
1117 }
1118
1119 check_header_objcc(){
1120     log check_header_objcc "$@"
1121     rm -f -- "$TMPO"
1122     header=$1
1123     shift
1124     disable_safe $header
1125     {
1126        echo "#include <$header>"
1127        echo "int main(void) { return 0; }"
1128     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1129 }
1130
1131 check_apple_framework(){
1132     log check_apple_framework "$@"
1133     framework="$1"
1134     name="$(tolower $framework)"
1135     header="${framework}/${framework}.h"
1136     disable $name
1137     check_header_objcc $header &&
1138         enable $name && eval ${name}_extralibs='"-framework $framework"'
1139 }
1140
1141 check_func(){
1142     log check_func "$@"
1143     func=$1
1144     shift
1145     disable $func
1146     check_ld "cc" "$@" <<EOF && enable $func
1147 extern int $func();
1148 int main(void){ $func(); }
1149 EOF
1150 }
1151
1152 check_complexfunc(){
1153     log check_complexfunc "$@"
1154     func=$1
1155     narg=$2
1156     shift 2
1157     test $narg = 2 && args="f, g" || args="f * I"
1158     disable $func
1159     check_ld "cc" "$@" <<EOF && enable $func
1160 #include <complex.h>
1161 #include <math.h>
1162 float foo(complex float f, complex float g) { return $func($args); }
1163 int main(void){ return (int) foo; }
1164 EOF
1165 }
1166
1167 check_mathfunc(){
1168     log check_mathfunc "$@"
1169     func=$1
1170     narg=$2
1171     shift 2
1172     test $narg = 2 && args="f, g" || args="f"
1173     disable $func
1174     check_ld "cc" "$@" <<EOF && enable $func
1175 #include <math.h>
1176 float foo(float f, float g) { return $func($args); }
1177 int main(void){ return (int) foo; }
1178 EOF
1179 }
1180
1181 check_func_headers(){
1182     log check_func_headers "$@"
1183     headers=$1
1184     funcs=$2
1185     shift 2
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "#include <stdint.h>"
1191         for func in $funcs; do
1192             echo "long check_$func(void) { return (long) $func; }"
1193         done
1194         echo "int main(void) { int ret = 0;"
1195         # LTO could optimize out the test functions without this
1196         for func in $funcs; do
1197             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1198         done
1199         echo "return ret; }"
1200     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1201 }
1202
1203 check_class_headers_cpp(){
1204     log check_class_headers_cpp "$@"
1205     headers=$1
1206     classes=$2
1207     shift 2
1208     {
1209         for hdr in $headers; do
1210             echo "#include <$hdr>"
1211         done
1212         echo "int main(void) { "
1213         i=1
1214         for class in $classes; do
1215             echo "$class obj$i;"
1216             i=$(expr $i + 1)
1217         done
1218         echo "return 0; }"
1219     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1220 }
1221
1222 check_cpp_condition(){
1223     log check_cpp_condition "$@"
1224     header=$1
1225     condition=$2
1226     shift 2
1227     check_cpp "$@" <<EOF
1228 #include <$header>
1229 #if !($condition)
1230 #error "unsatisfied condition: $condition"
1231 #endif
1232 EOF
1233 }
1234
1235 test_cflags_cc(){
1236     log test_cflags_cc "$@"
1237     flags=$1
1238     header=$2
1239     condition=$3
1240     shift 3
1241     set -- $($cflags_filter "$flags")
1242     check_cc "$@" <<EOF
1243 #include <$header>
1244 #if !($condition)
1245 #error "unsatisfied condition: $condition"
1246 #endif
1247 EOF
1248 }
1249
1250 check_lib(){
1251     log check_lib "$@"
1252     name="$1"
1253     headers="$2"
1254     funcs="$3"
1255     shift 3
1256     disable $name
1257     check_func_headers "$headers" "$funcs" "$@" &&
1258         enable $name && eval ${name}_extralibs="\$@"
1259 }
1260
1261 check_lib_cpp(){
1262     log check_lib_cpp "$@"
1263     name="$1"
1264     headers="$2"
1265     classes="$3"
1266     shift 3
1267     disable $name
1268     check_class_headers_cpp "$headers" "$classes" "$@" &&
1269         enable $name && eval ${name}_extralibs="\$@"
1270 }
1271
1272 check_pkg_config(){
1273     log check_pkg_config "$@"
1274     name="$1"
1275     pkg_version="$2"
1276     pkg="${2%% *}"
1277     headers="$3"
1278     funcs="$4"
1279     shift 4
1280     disable $name
1281     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1282     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1283     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1284     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1285         enable $name &&
1286         set_safe "${name}_cflags"    $pkg_cflags &&
1287         set_safe "${name}_extralibs" $pkg_libs
1288 }
1289
1290 check_exec(){
1291     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1292 }
1293
1294 check_exec_crash(){
1295     log check_exec_crash "$@"
1296     code=$(cat)
1297
1298     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1299     # are safe but may not be available everywhere.  Thus we use
1300     # raise(SIGTERM) instead.  The check is run in a subshell so we
1301     # can redirect the "Terminated" message from the shell.  SIGBUS
1302     # is not defined by standard C so it is used conditionally.
1303
1304     (check_exec "$@") >> $logfile 2>&1 <<EOF
1305 #include <signal.h>
1306 static void sighandler(int sig){
1307     raise(SIGTERM);
1308 }
1309 int foo(void){
1310     $code
1311 }
1312 int (*func_ptr)(void) = foo;
1313 int main(void){
1314     signal(SIGILL, sighandler);
1315     signal(SIGFPE, sighandler);
1316     signal(SIGSEGV, sighandler);
1317 #ifdef SIGBUS
1318     signal(SIGBUS, sighandler);
1319 #endif
1320     return func_ptr();
1321 }
1322 EOF
1323 }
1324
1325 check_type(){
1326     log check_type "$@"
1327     headers=$1
1328     type=$2
1329     shift 2
1330     disable_safe "$type"
1331     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1332 }
1333
1334 check_struct(){
1335     log check_struct "$@"
1336     headers=$1
1337     struct=$2
1338     member=$3
1339     shift 3
1340     disable_safe "${struct}_${member}"
1341     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1342         enable_safe "${struct}_${member}"
1343 }
1344
1345 check_builtin(){
1346     log check_builtin "$@"
1347     name=$1
1348     headers=$2
1349     builtin=$3
1350     shift 3
1351     disable "$name"
1352     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1353 }
1354
1355 check_compile_assert(){
1356     log check_compile_assert "$@"
1357     name=$1
1358     headers=$2
1359     condition=$3
1360     shift 3
1361     disable "$name"
1362     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1363 }
1364
1365 require(){
1366     log require "$@"
1367     name_version="$1"
1368     name="${1%% *}"
1369     headers="$2"
1370     func="$3"
1371     shift 3
1372     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1373 }
1374
1375 require_cpp(){
1376     name="$1"
1377     headers="$2"
1378     classes="$3"
1379     shift 3
1380     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1381 }
1382
1383 require_header(){
1384     log require "$@"
1385     header="$1"
1386     shift
1387     check_header "$header" "$@" || die "ERROR: $header header not found"
1388 }
1389
1390 require_cpp_condition(){
1391     log require "$@"
1392     header="$1"
1393     condition="$2"
1394     shift 2
1395     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1396 }
1397
1398 use_pkg_config(){
1399     log use_pkg_config "$@"
1400     name="$1"
1401     check_pkg_config "$@" || return 1
1402     add_cflags    $(get_safe "${name}_cflags")
1403 }
1404
1405 require_pkg_config(){
1406     log require_pkg_config "$@"
1407     pkg_version="$2"
1408     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1409 }
1410
1411 hostcc_e(){
1412     eval printf '%s\\n' $HOSTCC_E
1413 }
1414
1415 hostcc_o(){
1416     eval printf '%s\\n' $HOSTCC_O
1417 }
1418
1419 check_host_cc(){
1420     log check_host_cc "$@"
1421     cat > $TMPC
1422     log_file $TMPC
1423     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1424 }
1425
1426 check_host_cpp(){
1427     log check_host_cpp "$@"
1428     cat > $TMPC
1429     log_file $TMPC
1430     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1431 }
1432
1433 check_host_cppflags(){
1434     log check_host_cppflags "$@"
1435     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1436 #include <stdlib.h>
1437 EOF
1438 }
1439
1440 check_host_cflags(){
1441     log check_host_cflags "$@"
1442     set -- $($host_cflags_filter "$@")
1443     check_host_cc "$@" <<EOF && append host_cflags "$@"
1444 int x;
1445 EOF
1446 }
1447
1448 check_host_cpp_condition(){
1449     log check_host_cpp_condition "$@"
1450     header=$1
1451     condition=$2
1452     shift 2
1453     check_host_cpp "$@" <<EOF
1454 #include <$header>
1455 #if !($condition)
1456 #error "unsatisfied condition: $condition"
1457 #endif
1458 EOF
1459 }
1460
1461 cp_if_changed(){
1462     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1463     mkdir -p "$(dirname $2)"
1464     cp -f "$1" "$2"
1465 }
1466
1467 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1468 # system-dependent things.
1469
1470 AVCODEC_COMPONENTS="
1471     bsfs
1472     decoders
1473     encoders
1474     hwaccels
1475     parsers
1476 "
1477
1478 AVDEVICE_COMPONENTS="
1479     indevs
1480     outdevs
1481 "
1482
1483 AVFILTER_COMPONENTS="
1484     filters
1485 "
1486
1487 AVFORMAT_COMPONENTS="
1488     demuxers
1489     muxers
1490     protocols
1491 "
1492
1493 AVRESAMPLE_COMPONENTS=""
1494
1495 AVUTIL_COMPONENTS=""
1496
1497 COMPONENT_LIST="
1498     $AVCODEC_COMPONENTS
1499     $AVDEVICE_COMPONENTS
1500     $AVFILTER_COMPONENTS
1501     $AVFORMAT_COMPONENTS
1502     $AVRESAMPLE_COMPONENTS
1503     $AVUTIL_COMPONENTS
1504 "
1505
1506 EXAMPLE_LIST="
1507     avio_dir_cmd_example
1508     avio_reading_example
1509     decode_audio_example
1510     decode_video_example
1511     demuxing_decoding_example
1512     encode_audio_example
1513     encode_video_example
1514     extract_mvs_example
1515     filter_audio_example
1516     filtering_audio_example
1517     filtering_video_example
1518     http_multiclient_example
1519     hw_decode_example
1520     metadata_example
1521     muxing_example
1522     qsvdec_example
1523     remuxing_example
1524     resampling_audio_example
1525     scaling_video_example
1526     transcode_aac_example
1527     transcoding_example
1528 "
1529
1530 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1531     alsa
1532     appkit
1533     avfoundation
1534     bzlib
1535     coreimage
1536     iconv
1537     jack
1538     libxcb
1539     libxcb_shm
1540     libxcb_shape
1541     libxcb_xfixes
1542     lzma
1543     schannel
1544     sdl2
1545     securetransport
1546     sndio
1547     xlib
1548     zlib
1549 "
1550
1551 EXTERNAL_LIBRARY_GPL_LIST="
1552     avisynth
1553     frei0r
1554     libcdio
1555     librubberband
1556     libvidstab
1557     libx264
1558     libx265
1559     libxavs
1560     libxvid
1561 "
1562
1563 EXTERNAL_LIBRARY_NONFREE_LIST="
1564     decklink
1565     libndi_newtek
1566     libfdk_aac
1567     openssl
1568 "
1569
1570 EXTERNAL_LIBRARY_VERSION3_LIST="
1571     gmp
1572     libopencore_amrnb
1573     libopencore_amrwb
1574     libvo_amrwbenc
1575     rkmpp
1576 "
1577
1578 EXTERNAL_LIBRARY_GPLV3_LIST="
1579     libsmbclient
1580 "
1581
1582 EXTERNAL_LIBRARY_LIST="
1583     $EXTERNAL_LIBRARY_GPL_LIST
1584     $EXTERNAL_LIBRARY_NONFREE_LIST
1585     $EXTERNAL_LIBRARY_VERSION3_LIST
1586     $EXTERNAL_LIBRARY_GPLV3_LIST
1587     chromaprint
1588     gcrypt
1589     gnutls
1590     jni
1591     ladspa
1592     libass
1593     libbluray
1594     libbs2b
1595     libcaca
1596     libcelt
1597     libdc1394
1598     libdrm
1599     libflite
1600     libfontconfig
1601     libfreetype
1602     libfribidi
1603     libgme
1604     libgsm
1605     libiec61883
1606     libilbc
1607     libkvazaar
1608     libmodplug
1609     libmp3lame
1610     libmysofa
1611     libopencv
1612     libopenh264
1613     libopenjpeg
1614     libopenmpt
1615     libopus
1616     libpulse
1617     librsvg
1618     librtmp
1619     libshine
1620     libsmbclient
1621     libsnappy
1622     libsoxr
1623     libspeex
1624     libssh
1625     libtesseract
1626     libtheora
1627     libtwolame
1628     libv4l2
1629     libvmaf
1630     libvorbis
1631     libvpx
1632     libwavpack
1633     libwebp
1634     libxml2
1635     libzimg
1636     libzmq
1637     libzvbi
1638     mediacodec
1639     openal
1640     opencl
1641     opengl
1642 "
1643
1644 HWACCEL_AUTODETECT_LIBRARY_LIST="
1645     audiotoolbox
1646     crystalhd
1647     cuda
1648     cuvid
1649     d3d11va
1650     dxva2
1651     nvenc
1652     vaapi
1653     vda
1654     vdpau
1655     videotoolbox
1656     v4l2_m2m
1657     xvmc
1658 "
1659
1660 # catchall list of things that require external libs to link
1661 EXTRALIBS_LIST="
1662     cpu_init
1663     cws2fws
1664 "
1665
1666 HWACCEL_LIBRARY_NONFREE_LIST="
1667     cuda_sdk
1668     libnpp
1669 "
1670
1671 HWACCEL_LIBRARY_LIST="
1672     $HWACCEL_LIBRARY_NONFREE_LIST
1673     libmfx
1674     mmal
1675     omx
1676 "
1677
1678 DOCUMENT_LIST="
1679     doc
1680     htmlpages
1681     manpages
1682     podpages
1683     txtpages
1684 "
1685
1686 FEATURE_LIST="
1687     ftrapv
1688     gray
1689     hardcoded_tables
1690     omx_rpi
1691     runtime_cpudetect
1692     safe_bitstream_reader
1693     shared
1694     small
1695     static
1696     swscale_alpha
1697 "
1698
1699 LIBRARY_LIST="
1700     avcodec
1701     avdevice
1702     avfilter
1703     avformat
1704     avresample
1705     avutil
1706     postproc
1707     swresample
1708     swscale
1709 "
1710
1711 LICENSE_LIST="
1712     gpl
1713     nonfree
1714     version3
1715 "
1716
1717 PROGRAM_LIST="
1718     ffplay
1719     ffprobe
1720     ffserver
1721     ffmpeg
1722 "
1723
1724 SUBSYSTEM_LIST="
1725     dct
1726     dwt
1727     error_resilience
1728     faan
1729     fast_unaligned
1730     fft
1731     lsp
1732     lzo
1733     mdct
1734     pixelutils
1735     network
1736     rdft
1737 "
1738
1739 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1740 CONFIG_LIST="
1741     $DOCUMENT_LIST
1742     $EXAMPLE_LIST
1743     $EXTERNAL_LIBRARY_LIST
1744     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1745     $HWACCEL_LIBRARY_LIST
1746     $HWACCEL_AUTODETECT_LIBRARY_LIST
1747     $FEATURE_LIST
1748     $LICENSE_LIST
1749     $LIBRARY_LIST
1750     $PROGRAM_LIST
1751     $SUBSYSTEM_LIST
1752     autodetect
1753     fontconfig
1754     linux_perf
1755     memory_poisoning
1756     neon_clobber_test
1757     ossfuzz
1758     pic
1759     thumb
1760     valgrind_backtrace
1761     xmm_clobber_test
1762     $COMPONENT_LIST
1763 "
1764
1765 THREADS_LIST="
1766     pthreads
1767     os2threads
1768     w32threads
1769 "
1770
1771 ATOMICS_LIST="
1772     atomics_gcc
1773     atomics_suncc
1774     atomics_win32
1775 "
1776
1777 AUTODETECT_LIBS="
1778     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1779     $HWACCEL_AUTODETECT_LIBRARY_LIST
1780     $THREADS_LIST
1781 "
1782
1783 ARCH_LIST="
1784     aarch64
1785     alpha
1786     arm
1787     avr32
1788     avr32_ap
1789     avr32_uc
1790     bfin
1791     ia64
1792     m68k
1793     mips
1794     mips64
1795     parisc
1796     ppc
1797     ppc64
1798     s390
1799     sh4
1800     sparc
1801     sparc64
1802     tilegx
1803     tilepro
1804     tomi
1805     x86
1806     x86_32
1807     x86_64
1808 "
1809
1810 ARCH_EXT_LIST_ARM="
1811     armv5te
1812     armv6
1813     armv6t2
1814     armv8
1815     neon
1816     vfp
1817     vfpv3
1818     setend
1819 "
1820
1821 ARCH_EXT_LIST_MIPS="
1822     mipsfpu
1823     mips32r2
1824     mips32r5
1825     mips64r2
1826     mips32r6
1827     mips64r6
1828     mipsdsp
1829     mipsdspr2
1830     msa
1831 "
1832
1833 ARCH_EXT_LIST_LOONGSON="
1834     loongson2
1835     loongson3
1836     mmi
1837 "
1838
1839 ARCH_EXT_LIST_X86_SIMD="
1840     aesni
1841     amd3dnow
1842     amd3dnowext
1843     avx
1844     avx2
1845     fma3
1846     fma4
1847     mmx
1848     mmxext
1849     sse
1850     sse2
1851     sse3
1852     sse4
1853     sse42
1854     ssse3
1855     xop
1856 "
1857
1858 ARCH_EXT_LIST_PPC="
1859     altivec
1860     dcbzl
1861     ldbrx
1862     power8
1863     ppc4xx
1864     vsx
1865 "
1866
1867 ARCH_EXT_LIST_X86="
1868     $ARCH_EXT_LIST_X86_SIMD
1869     cpunop
1870     i686
1871 "
1872
1873 ARCH_EXT_LIST="
1874     $ARCH_EXT_LIST_ARM
1875     $ARCH_EXT_LIST_PPC
1876     $ARCH_EXT_LIST_X86
1877     $ARCH_EXT_LIST_MIPS
1878     $ARCH_EXT_LIST_LOONGSON
1879 "
1880
1881 ARCH_FEATURES="
1882     aligned_stack
1883     fast_64bit
1884     fast_clz
1885     fast_cmov
1886     local_aligned_8
1887     local_aligned_16
1888     local_aligned_32
1889     simd_align_16
1890     simd_align_32
1891 "
1892
1893 BUILTIN_LIST="
1894     atomic_cas_ptr
1895     machine_rw_barrier
1896     MemoryBarrier
1897     mm_empty
1898     rdtsc
1899     sarestart
1900     sem_timedwait
1901     sync_val_compare_and_swap
1902 "
1903 HAVE_LIST_CMDLINE="
1904     inline_asm
1905     symver
1906     x86asm
1907 "
1908
1909 HAVE_LIST_PUB="
1910     bigendian
1911     fast_unaligned
1912 "
1913
1914 HEADERS_LIST="
1915     altivec_h
1916     arpa_inet_h
1917     asm_types_h
1918     cdio_paranoia_h
1919     cdio_paranoia_paranoia_h
1920     cuda_h
1921     d3d11_h
1922     dispatch_dispatch_h
1923     dev_bktr_ioctl_bt848_h
1924     dev_bktr_ioctl_meteor_h
1925     dev_ic_bt8xx_h
1926     dev_video_bktr_ioctl_bt848_h
1927     dev_video_meteor_ioctl_meteor_h
1928     direct_h
1929     dirent_h
1930     dlfcn_h
1931     dxgidebug_h
1932     dxva_h
1933     ES2_gl_h
1934     gsm_h
1935     io_h
1936     mach_mach_time_h
1937     machine_ioctl_bt848_h
1938     machine_ioctl_meteor_h
1939     malloc_h
1940     opencv2_core_core_c_h
1941     openjpeg_2_3_openjpeg_h
1942     openjpeg_2_2_openjpeg_h
1943     openjpeg_2_1_openjpeg_h
1944     openjpeg_2_0_openjpeg_h
1945     openjpeg_1_5_openjpeg_h
1946     OpenGL_gl3_h
1947     poll_h
1948     soundcard_h
1949     stdatomic_h
1950     sys_mman_h
1951     sys_param_h
1952     sys_resource_h
1953     sys_select_h
1954     sys_soundcard_h
1955     sys_time_h
1956     sys_un_h
1957     sys_videoio_h
1958     termios_h
1959     udplite_h
1960     unistd_h
1961     valgrind_valgrind_h
1962     windows_h
1963     winsock2_h
1964 "
1965
1966 INTRINSICS_LIST="
1967     intrinsics_neon
1968 "
1969
1970 COMPLEX_FUNCS="
1971     cabs
1972     cexp
1973 "
1974
1975 MATH_FUNCS="
1976     atanf
1977     atan2f
1978     cbrt
1979     cbrtf
1980     copysign
1981     cosf
1982     erf
1983     exp2
1984     exp2f
1985     expf
1986     hypot
1987     isfinite
1988     isinf
1989     isnan
1990     ldexpf
1991     llrint
1992     llrintf
1993     log2
1994     log2f
1995     log10f
1996     lrint
1997     lrintf
1998     powf
1999     rint
2000     round
2001     roundf
2002     sinf
2003     trunc
2004     truncf
2005 "
2006
2007 SYSTEM_FUNCS="
2008     access
2009     aligned_malloc
2010     arc4random
2011     clock_gettime
2012     closesocket
2013     CommandLineToArgvW
2014     CoTaskMemFree
2015     CryptGenRandom
2016     fcntl
2017     flt_lim
2018     fork
2019     getaddrinfo
2020     gethrtime
2021     getopt
2022     GetProcessAffinityMask
2023     GetProcessMemoryInfo
2024     GetProcessTimes
2025     getrusage
2026     GetSystemTimeAsFileTime
2027     gettimeofday
2028     glob
2029     glXGetProcAddress
2030     gmtime_r
2031     inet_aton
2032     isatty
2033     jack_port_get_latency_range
2034     kbhit
2035     LoadLibrary
2036     localtime_r
2037     lstat
2038     lzo1x_999_compress
2039     mach_absolute_time
2040     MapViewOfFile
2041     memalign
2042     mkstemp
2043     mmap
2044     mprotect
2045     nanosleep
2046     PeekNamedPipe
2047     posix_memalign
2048     pthread_cancel
2049     sched_getaffinity
2050     SetConsoleTextAttribute
2051     SetConsoleCtrlHandler
2052     setmode
2053     setrlimit
2054     Sleep
2055     strerror_r
2056     sysconf
2057     sysctl
2058     usleep
2059     UTGetOSTypeFromString
2060     VirtualAlloc
2061     wglGetProcAddress
2062 "
2063
2064 TOOLCHAIN_FEATURES="
2065     as_dn_directive
2066     as_fpu_directive
2067     as_func
2068     as_object_arch
2069     asm_mod_q
2070     attribute_may_alias
2071     attribute_packed
2072     blocks_extension
2073     ebp_available
2074     ebx_available
2075     gnu_as
2076     gnu_windres
2077     ibm_asm
2078     inline_asm_direct_symbol_refs
2079     inline_asm_labels
2080     inline_asm_nonlocal_labels
2081     pragma_deprecated
2082     rsync_contimeout
2083     symver_asm_label
2084     symver_gnu_asm
2085     vfp_args
2086     xform_asm
2087     xmm_clobbers
2088 "
2089
2090 TYPES_LIST="
2091     CONDITION_VARIABLE_Ptr
2092     kCMVideoCodecType_HEVC
2093     socklen_t
2094     struct_addrinfo
2095     struct_group_source_req
2096     struct_ip_mreq_source
2097     struct_ipv6_mreq
2098     struct_msghdr_msg_flags
2099     struct_pollfd
2100     struct_rusage_ru_maxrss
2101     struct_sctp_event_subscribe
2102     struct_sockaddr_in6
2103     struct_sockaddr_sa_len
2104     struct_sockaddr_storage
2105     struct_stat_st_mtim_tv_nsec
2106     struct_v4l2_frmivalenum_discrete
2107 "
2108
2109 HAVE_LIST="
2110     $ARCH_EXT_LIST
2111     $(add_suffix _external $ARCH_EXT_LIST)
2112     $(add_suffix _inline   $ARCH_EXT_LIST)
2113     $ARCH_FEATURES
2114     $ATOMICS_LIST
2115     $BUILTIN_LIST
2116     $COMPLEX_FUNCS
2117     $HAVE_LIST_CMDLINE
2118     $HAVE_LIST_PUB
2119     $HEADERS_LIST
2120     $INTRINSICS_LIST
2121     $MATH_FUNCS
2122     $SYSTEM_FUNCS
2123     $THREADS_LIST
2124     $TOOLCHAIN_FEATURES
2125     $TYPES_LIST
2126     atomics_native
2127     dos_paths
2128     libc_msvcrt
2129     makeinfo
2130     makeinfo_html
2131     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2132     perl
2133     pod2man
2134     section_data_rel_ro
2135     texi2html
2136     threads
2137     uwp
2138     vaapi_drm
2139     vaapi_x11
2140     vdpau_x11
2141     winrt
2142 "
2143
2144 # options emitted with CONFIG_ prefix but not available on the command line
2145 CONFIG_EXTRA="
2146     aandcttables
2147     ac3dsp
2148     audio_frame_queue
2149     audiodsp
2150     blockdsp
2151     bswapdsp
2152     cabac
2153     dirac_parse
2154     dvprofile
2155     exif
2156     faandct
2157     faanidct
2158     fdctdsp
2159     flacdsp
2160     fmtconvert
2161     frame_thread_encoder
2162     g722dsp
2163     golomb
2164     gplv3
2165     h263dsp
2166     h264chroma
2167     h264dsp
2168     h264parse
2169     h264pred
2170     h264qpel
2171     hevcparse
2172     hpeldsp
2173     huffman
2174     huffyuvdsp
2175     huffyuvencdsp
2176     idctdsp
2177     iirfilter
2178     mdct15
2179     intrax8
2180     iso_media
2181     ividsp
2182     jpegtables
2183     lgplv3
2184     libx262
2185     llauddsp
2186     llviddsp
2187     llvidencdsp
2188     lpc
2189     lzf
2190     me_cmp
2191     mpeg_er
2192     mpegaudio
2193     mpegaudiodsp
2194     mpegaudioheader
2195     mpegvideo
2196     mpegvideoenc
2197     mss34dsp
2198     pixblockdsp
2199     qpeldsp
2200     qsv
2201     qsvdec
2202     qsvenc
2203     rangecoder
2204     riffdec
2205     riffenc
2206     rtpdec
2207     rtpenc_chain
2208     rv34dsp
2209     sinewin
2210     snappy
2211     srtp
2212     startcode
2213     texturedsp
2214     texturedspenc
2215     tpeldsp
2216     vaapi_1
2217     vaapi_encode
2218     vc1dsp
2219     videodsp
2220     vp3dsp
2221     vp56dsp
2222     vp8dsp
2223     wma_freqs
2224     wmv2dsp
2225 "
2226
2227 CMDLINE_SELECT="
2228     $ARCH_EXT_LIST
2229     $CONFIG_LIST
2230     $HAVE_LIST_CMDLINE
2231     $THREADS_LIST
2232     asm
2233     cross_compile
2234     debug
2235     extra_warnings
2236     logging
2237     lto
2238     optimizations
2239     rpath
2240     stripping
2241 "
2242
2243 PATHS_LIST="
2244     bindir
2245     datadir
2246     docdir
2247     incdir
2248     libdir
2249     mandir
2250     pkgconfigdir
2251     prefix
2252     shlibdir
2253     install_name_dir
2254 "
2255
2256 CMDLINE_SET="
2257     $PATHS_LIST
2258     ar
2259     arch
2260     as
2261     assert_level
2262     build_suffix
2263     cc
2264     objcc
2265     cpu
2266     cross_prefix
2267     custom_allocator
2268     cxx
2269     dep_cc
2270     doxygen
2271     env
2272     extra_version
2273     gas
2274     host_cc
2275     host_cflags
2276     host_extralibs
2277     host_ld
2278     host_ldflags
2279     host_os
2280     ignore_tests
2281     install
2282     ld
2283     ln_s
2284     logfile
2285     malloc_prefix
2286     nm
2287     optflags
2288     nvccflags
2289     pkg_config
2290     pkg_config_flags
2291     progs_suffix
2292     random_seed
2293     ranlib
2294     samples
2295     strip
2296     sws_max_filter_size
2297     sysinclude
2298     sysroot
2299     target_exec
2300     target_os
2301     target_path
2302     target_samples
2303     tempprefix
2304     toolchain
2305     valgrind
2306     x86asmexe
2307 "
2308
2309 CMDLINE_APPEND="
2310     extra_cflags
2311     extra_cxxflags
2312     extra_objcflags
2313     host_cppflags
2314 "
2315
2316 # code dependency declarations
2317
2318 # architecture extensions
2319
2320 armv5te_deps="arm"
2321 armv6_deps="arm"
2322 armv6t2_deps="arm"
2323 armv8_deps="aarch64"
2324 neon_deps_any="aarch64 arm"
2325 intrinsics_neon_deps="neon"
2326 vfp_deps_any="aarch64 arm"
2327 vfpv3_deps="vfp"
2328 setend_deps="arm"
2329
2330 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2331
2332 loongson2_deps="mips"
2333 loongson3_deps="mips"
2334 mipsfpu_deps="mips"
2335 mipsdsp_deps="mips"
2336 mipsdspr2_deps="mips"
2337 mips32r2_deps="mips"
2338 mips32r5_deps="mips"
2339 mips32r6_deps="mips"
2340 mips64r2_deps="mips"
2341 mips64r6_deps="mips"
2342 msa_deps="mipsfpu"
2343 mmi_deps="mips"
2344
2345 altivec_deps="ppc"
2346 dcbzl_deps="ppc"
2347 ldbrx_deps="ppc"
2348 ppc4xx_deps="ppc"
2349 vsx_deps="altivec"
2350 power8_deps="vsx"
2351
2352 cpunop_deps="i686"
2353 x86_64_select="i686"
2354 x86_64_suggest="fast_cmov"
2355
2356 amd3dnow_deps="mmx"
2357 amd3dnowext_deps="amd3dnow"
2358 i686_deps="x86"
2359 mmx_deps="x86"
2360 mmxext_deps="mmx"
2361 sse_deps="mmxext"
2362 sse2_deps="sse"
2363 sse3_deps="sse2"
2364 ssse3_deps="sse3"
2365 sse4_deps="ssse3"
2366 sse42_deps="sse4"
2367 aesni_deps="sse42"
2368 avx_deps="sse42"
2369 xop_deps="avx"
2370 fma3_deps="avx"
2371 fma4_deps="avx"
2372 avx2_deps="avx"
2373
2374 mmx_external_deps="x86asm"
2375 mmx_inline_deps="inline_asm"
2376 mmx_suggest="mmx_external mmx_inline"
2377
2378 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2379     eval dep=\$${ext}_deps
2380     eval ${ext}_external_deps='"${dep}_external"'
2381     eval ${ext}_inline_deps='"${dep}_inline"'
2382     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2383 done
2384
2385 aligned_stack_if_any="aarch64 ppc x86"
2386 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2387 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2388 fast_unaligned_if_any="aarch64 ppc x86"
2389 simd_align_16_if_any="altivec neon sse"
2390 simd_align_32_if_any="avx"
2391
2392 # system capabilities
2393 symver_if_any="symver_asm_label symver_gnu_asm"
2394 valgrind_backtrace_conflict="optimizations"
2395 valgrind_backtrace_deps="valgrind_valgrind_h"
2396
2397 # threading support
2398 atomics_gcc_if="sync_val_compare_and_swap"
2399 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2400 atomics_win32_if="MemoryBarrier"
2401 atomics_native_if_any="$ATOMICS_LIST"
2402 w32threads_deps="atomics_native"
2403 threads_if_any="$THREADS_LIST"
2404
2405 # subsystems
2406 dct_select="rdft"
2407 dirac_parse_select="golomb"
2408 error_resilience_select="me_cmp"
2409 faandct_deps="faan fdctdsp"
2410 faanidct_deps="faan idctdsp"
2411 h264dsp_select="startcode"
2412 hevcparse_select="golomb"
2413 frame_thread_encoder_deps="encoders threads"
2414 intrax8_select="blockdsp idctdsp"
2415 mdct_select="fft"
2416 mdct15_select="fft"
2417 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2418 mpeg_er_select="error_resilience"
2419 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2420 mpegaudiodsp_select="dct"
2421 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2422 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2423 vc1dsp_select="h264chroma qpeldsp startcode"
2424 rdft_select="fft"
2425
2426 # decoders / encoders
2427 aac_decoder_select="mdct15 mdct sinewin"
2428 aac_fixed_decoder_select="mdct sinewin"
2429 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2430 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2431 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2432 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2433 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2434 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2435 adpcm_g722_decoder_select="g722dsp"
2436 adpcm_g722_encoder_select="g722dsp"
2437 aic_decoder_select="golomb idctdsp"
2438 alac_encoder_select="lpc"
2439 als_decoder_select="bswapdsp"
2440 amrnb_decoder_select="lsp"
2441 amrwb_decoder_select="lsp"
2442 amv_decoder_select="sp5x_decoder exif"
2443 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2444 ape_decoder_select="bswapdsp llauddsp"
2445 apng_decoder_select="zlib"
2446 apng_encoder_select="llvidencdsp zlib"
2447 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2448 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2449 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2450 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2451 atrac1_decoder_select="mdct sinewin"
2452 atrac3_decoder_select="mdct"
2453 atrac3p_decoder_select="mdct sinewin"
2454 avrn_decoder_select="exif jpegtables"
2455 bink_decoder_select="blockdsp hpeldsp"
2456 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2457 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2458 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2459 clearvideo_decoder_select="idctdsp"
2460 cllc_decoder_select="bswapdsp"
2461 comfortnoise_encoder_select="lpc"
2462 cook_decoder_select="audiodsp mdct sinewin"
2463 cscd_decoder_select="lzo"
2464 cscd_decoder_suggest="zlib"
2465 dca_decoder_select="mdct"
2466 dds_decoder_select="texturedsp"
2467 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2468 dnxhd_decoder_select="blockdsp idctdsp"
2469 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2470 dolby_e_decoder_select="mdct"
2471 dvvideo_decoder_select="dvprofile idctdsp"
2472 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2473 dxa_decoder_select="zlib"
2474 dxv_decoder_select="lzf texturedsp"
2475 eac3_decoder_select="ac3_decoder"
2476 eac3_encoder_select="ac3_encoder"
2477 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2478 eatgq_decoder_select="aandcttables"
2479 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2480 exr_decoder_select="zlib"
2481 ffv1_decoder_select="rangecoder"
2482 ffv1_encoder_select="rangecoder"
2483 ffvhuff_decoder_select="huffyuv_decoder"
2484 ffvhuff_encoder_select="huffyuv_encoder"
2485 fic_decoder_select="golomb"
2486 flac_decoder_select="flacdsp"
2487 flac_encoder_select="bswapdsp flacdsp lpc"
2488 flashsv2_decoder_select="zlib"
2489 flashsv2_encoder_select="zlib"
2490 flashsv_decoder_select="zlib"
2491 flashsv_encoder_select="zlib"
2492 flv_decoder_select="h263_decoder"
2493 flv_encoder_select="h263_encoder"
2494 fourxm_decoder_select="blockdsp bswapdsp"
2495 fraps_decoder_select="bswapdsp huffman"
2496 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2497 g729_decoder_select="audiodsp"
2498 h261_decoder_select="mpegvideo"
2499 h261_encoder_select="aandcttables mpegvideoenc"
2500 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2501 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2502 h263i_decoder_select="h263_decoder"
2503 h263p_decoder_select="h263_decoder"
2504 h263p_encoder_select="h263_encoder"
2505 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2506 h264_decoder_suggest="error_resilience"
2507 hap_decoder_select="snappy texturedsp"
2508 hap_encoder_deps="libsnappy"
2509 hap_encoder_select="texturedspenc"
2510 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2511 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2512 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2513 iac_decoder_select="imc_decoder"
2514 imc_decoder_select="bswapdsp fft mdct sinewin"
2515 indeo3_decoder_select="hpeldsp"
2516 indeo4_decoder_select="ividsp"
2517 indeo5_decoder_select="ividsp"
2518 interplay_video_decoder_select="hpeldsp"
2519 jpegls_decoder_select="mjpeg_decoder"
2520 jv_decoder_select="blockdsp"
2521 lagarith_decoder_select="llviddsp"
2522 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2523 magicyuv_decoder_select="llviddsp"
2524 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2525 metasound_decoder_select="lsp mdct sinewin"
2526 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2527 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2528 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2529 mjpegb_decoder_select="mjpeg_decoder"
2530 mlp_decoder_select="mlp_parser"
2531 mlp_encoder_select="lpc"
2532 motionpixels_decoder_select="bswapdsp"
2533 mp1_decoder_select="mpegaudio"
2534 mp1float_decoder_select="mpegaudio"
2535 mp2_decoder_select="mpegaudio"
2536 mp2float_decoder_select="mpegaudio"
2537 mp3_decoder_select="mpegaudio"
2538 mp3adu_decoder_select="mpegaudio"
2539 mp3adufloat_decoder_select="mpegaudio"
2540 mp3float_decoder_select="mpegaudio"
2541 mp3on4_decoder_select="mpegaudio"
2542 mp3on4float_decoder_select="mpegaudio"
2543 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2544 mpc8_decoder_select="mpegaudiodsp"
2545 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2546 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2547 mpegvideo_decoder_select="mpegvideo"
2548 mpeg1video_decoder_select="mpegvideo"
2549 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2550 mpeg2video_decoder_select="mpegvideo"
2551 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2552 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2553 mpeg4_encoder_select="h263_encoder"
2554 msa1_decoder_select="mss34dsp"
2555 mscc_decoder_select="zlib"
2556 msmpeg4v1_decoder_select="h263_decoder"
2557 msmpeg4v2_decoder_select="h263_decoder"
2558 msmpeg4v2_encoder_select="h263_encoder"
2559 msmpeg4v3_decoder_select="h263_decoder"
2560 msmpeg4v3_encoder_select="h263_encoder"
2561 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2562 mts2_decoder_select="mss34dsp"
2563 mxpeg_decoder_select="mjpeg_decoder"
2564 nellymoser_decoder_select="mdct sinewin"
2565 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2566 nuv_decoder_select="idctdsp lzo"
2567 on2avc_decoder_select="mdct"
2568 opus_decoder_deps="swresample"
2569 opus_decoder_select="mdct15"
2570 opus_encoder_select="audio_frame_queue mdct15"
2571 png_decoder_select="zlib"
2572 png_encoder_select="llvidencdsp zlib"
2573 prores_decoder_select="blockdsp idctdsp"
2574 prores_encoder_select="fdctdsp"
2575 qcelp_decoder_select="lsp"
2576 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2577 ra_144_decoder_select="audiodsp"
2578 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2579 ralf_decoder_select="golomb"
2580 rawvideo_decoder_select="bswapdsp"
2581 rscc_decoder_select="zlib"
2582 rtjpeg_decoder_select="me_cmp"
2583 rv10_decoder_select="h263_decoder"
2584 rv10_encoder_select="h263_encoder"
2585 rv20_decoder_select="h263_decoder"
2586 rv20_encoder_select="h263_encoder"
2587 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2588 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2589 screenpresso_decoder_select="zlib"
2590 shorten_decoder_select="bswapdsp"
2591 sipr_decoder_select="lsp"
2592 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2593 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2594 sonic_decoder_select="golomb rangecoder"
2595 sonic_encoder_select="golomb rangecoder"
2596 sonic_ls_encoder_select="golomb rangecoder"
2597 sp5x_decoder_select="mjpeg_decoder"
2598 srgc_decoder_select="zlib"
2599 svq1_decoder_select="hpeldsp"
2600 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2601 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2602 svq3_decoder_suggest="zlib"
2603 tak_decoder_select="audiodsp"
2604 tdsc_decoder_select="zlib mjpeg_decoder"
2605 theora_decoder_select="vp3_decoder"
2606 thp_decoder_select="mjpeg_decoder"
2607 tiff_decoder_suggest="zlib lzma"
2608 tiff_encoder_suggest="zlib"
2609 truehd_decoder_select="mlp_parser"
2610 truehd_encoder_select="lpc"
2611 truemotion2_decoder_select="bswapdsp"
2612 truespeech_decoder_select="bswapdsp"
2613 tscc_decoder_select="zlib"
2614 twinvq_decoder_select="mdct lsp sinewin"
2615 txd_decoder_select="texturedsp"
2616 utvideo_decoder_select="bswapdsp llviddsp"
2617 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2618 vble_decoder_select="llviddsp"
2619 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2620 vc1_qsv_decoder_deps="libmfx"
2621 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2622 vc1image_decoder_select="vc1_decoder"
2623 vorbis_decoder_select="mdct"
2624 vorbis_encoder_select="mdct"
2625 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2626 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2627 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2628 vp6a_decoder_select="vp6_decoder"
2629 vp6f_decoder_select="vp6_decoder"
2630 vp7_decoder_select="h264pred videodsp vp8dsp"
2631 vp8_decoder_select="h264pred videodsp vp8dsp"
2632 vp9_decoder_select="videodsp vp9_parser"
2633 webp_decoder_select="vp8_decoder exif"
2634 wmalossless_decoder_select="llauddsp"
2635 wmapro_decoder_select="mdct sinewin wma_freqs"
2636 wmav1_decoder_select="mdct sinewin wma_freqs"
2637 wmav1_encoder_select="mdct sinewin wma_freqs"
2638 wmav2_decoder_select="mdct sinewin wma_freqs"
2639 wmav2_encoder_select="mdct sinewin wma_freqs"
2640 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2641 wmv1_decoder_select="h263_decoder"
2642 wmv1_encoder_select="h263_encoder"
2643 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2644 wmv2_encoder_select="h263_encoder wmv2dsp"
2645 wmv3_decoder_select="vc1_decoder"
2646 wmv3image_decoder_select="wmv3_decoder"
2647 xma1_decoder_select="wmapro_decoder"
2648 xma2_decoder_select="wmapro_decoder"
2649 zerocodec_decoder_select="zlib"
2650 zlib_decoder_select="zlib"
2651 zlib_encoder_select="zlib"
2652 zmbv_decoder_select="zlib"
2653 zmbv_encoder_select="zlib"
2654
2655 # hardware accelerators
2656 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2657 cuda_deps_any="libdl LoadLibrary"
2658 cuvid_deps="cuda"
2659 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2660 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2661 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2662 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2663 vda_deps="vda_framework pthreads corefoundation"
2664 vda_extralibs="-framework QuartzCore"
2665 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2666 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2667 xvmc_deps="X11_extensions_XvMClib_h"
2668
2669 h263_vaapi_hwaccel_deps="vaapi"
2670 h263_vaapi_hwaccel_select="h263_decoder"
2671 h263_videotoolbox_hwaccel_deps="videotoolbox"
2672 h263_videotoolbox_hwaccel_select="h263_decoder"
2673 h264_cuvid_hwaccel_deps="cuda cuvid"
2674 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2675 h264_d3d11va_hwaccel_deps="d3d11va"
2676 h264_d3d11va_hwaccel_select="h264_decoder"
2677 h264_d3d11va2_hwaccel_deps="d3d11va"
2678 h264_d3d11va2_hwaccel_select="h264_decoder"
2679 h264_dxva2_hwaccel_deps="dxva2"
2680 h264_dxva2_hwaccel_select="h264_decoder"
2681 h264_mediacodec_hwaccel_deps="mediacodec"
2682 h264_mmal_hwaccel_deps="mmal"
2683 h264_qsv_hwaccel_deps="libmfx"
2684 h264_vaapi_hwaccel_deps="vaapi"
2685 h264_vaapi_hwaccel_select="h264_decoder"
2686 h264_vda_hwaccel_deps="vda"
2687 h264_vda_hwaccel_select="h264_decoder"
2688 h264_vda_old_hwaccel_deps="vda"
2689 h264_vda_old_hwaccel_select="h264_decoder"
2690 h264_vdpau_hwaccel_deps="vdpau"
2691 h264_vdpau_hwaccel_select="h264_decoder"
2692 h264_videotoolbox_hwaccel_deps="videotoolbox"
2693 h264_videotoolbox_hwaccel_select="h264_decoder"
2694 hevc_cuvid_hwaccel_deps="cuda cuvid"
2695 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2696 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2697 hevc_d3d11va_hwaccel_select="hevc_decoder"
2698 hevc_mediacodec_hwaccel_deps="mediacodec"
2699 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2700 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2701 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2702 hevc_dxva2_hwaccel_select="hevc_decoder"
2703 hevc_qsv_hwaccel_deps="libmfx"
2704 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2705 hevc_vaapi_hwaccel_select="hevc_decoder"
2706 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2707 hevc_vdpau_hwaccel_select="hevc_decoder"
2708 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2709 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2710 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2711 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2712 mpeg_xvmc_hwaccel_deps="xvmc"
2713 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2714 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2715 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2716 mpeg1_vdpau_hwaccel_deps="vdpau"
2717 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2718 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2719 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2720 mpeg1_xvmc_hwaccel_deps="xvmc"
2721 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2722 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2723 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2724 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2725 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2727 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2728 mpeg2_dxva2_hwaccel_deps="dxva2"
2729 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2730 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2731 mpeg2_mmal_hwaccel_deps="mmal"
2732 mpeg2_qsv_hwaccel_deps="libmfx"
2733 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2734 mpeg2_vaapi_hwaccel_deps="vaapi"
2735 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2736 mpeg2_vdpau_hwaccel_deps="vdpau"
2737 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2738 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2739 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2740 mpeg2_xvmc_hwaccel_deps="xvmc"
2741 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2742 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2743 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2744 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2745 mpeg4_mmal_hwaccel_deps="mmal"
2746 mpeg4_vaapi_hwaccel_deps="vaapi"
2747 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2748 mpeg4_vdpau_hwaccel_deps="vdpau"
2749 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2750 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2751 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2752 vc1_cuvid_hwaccel_deps="cuda cuvid"
2753 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2754 vc1_d3d11va_hwaccel_deps="d3d11va"
2755 vc1_d3d11va_hwaccel_select="vc1_decoder"
2756 vc1_d3d11va2_hwaccel_deps="d3d11va"
2757 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2758 vc1_dxva2_hwaccel_deps="dxva2"
2759 vc1_dxva2_hwaccel_select="vc1_decoder"
2760 vc1_mmal_hwaccel_deps="mmal"
2761 vc1_qsv_hwaccel_deps="libmfx"
2762 vc1_qsv_hwaccel_select="qsvdec_vc1"
2763 vc1_vaapi_hwaccel_deps="vaapi"
2764 vc1_vaapi_hwaccel_select="vc1_decoder"
2765 vc1_vdpau_hwaccel_deps="vdpau"
2766 vc1_vdpau_hwaccel_select="vc1_decoder"
2767 vp8_cuvid_hwaccel_deps="cuda cuvid"
2768 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2769 vp9_cuvid_hwaccel_deps="cuda cuvid"
2770 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2771 vp8_mediacodec_hwaccel_deps="mediacodec"
2772 vp8_qsv_hwaccel_deps="libmfx"
2773 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2774 vp9_d3d11va_hwaccel_select="vp9_decoder"
2775 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2776 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2777 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2778 vp9_dxva2_hwaccel_select="vp9_decoder"
2779 vp9_mediacodec_hwaccel_deps="mediacodec"
2780 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2781 vp9_vaapi_hwaccel_select="vp9_decoder"
2782 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2783 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2784 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2785 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2786 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2787
2788 # hardware-accelerated codecs
2789 omx_deps="libdl pthreads"
2790 omx_rpi_select="omx"
2791 qsvdec_select="qsv"
2792 qsvenc_select="qsv"
2793 vaapi_encode_deps="vaapi"
2794 v4l2_m2m_deps_any="linux_videodev2_h"
2795
2796 hwupload_cuda_filter_deps="cuda"
2797 scale_npp_filter_deps="cuda libnpp"
2798 scale_cuda_filter_deps="cuda_sdk"
2799 thumbnail_cuda_filter_deps="cuda_sdk"
2800
2801 nvenc_deps="cuda"
2802 nvenc_deps_any="libdl LoadLibrary"
2803 nvenc_encoder_deps="nvenc"
2804
2805 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2806 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2807 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2808 h264_cuvid_decoder_deps="cuda cuvid"
2809 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2810 h264_mediacodec_decoder_deps="mediacodec"
2811 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2812 h264_mmal_decoder_deps="mmal"
2813 h264_nvenc_encoder_deps="nvenc"
2814 h264_omx_encoder_deps="omx"
2815 h264_qsv_decoder_deps="libmfx"
2816 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2817 h264_qsv_encoder_deps="libmfx"
2818 h264_qsv_encoder_select="qsvenc"
2819 h264_rkmpp_decoder_deps="rkmpp"
2820 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2821 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2822 h264_vaapi_encoder_select="vaapi_encode golomb"
2823 h264_vda_decoder_deps="vda"
2824 h264_vda_decoder_select="h264_decoder"
2825 h264_vdpau_decoder_deps="vdpau"
2826 h264_vdpau_decoder_select="h264_decoder"
2827 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2828 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2829 hevc_cuvid_decoder_deps="cuda cuvid"
2830 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2831 hevc_mediacodec_decoder_deps="mediacodec"
2832 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2833 hevc_nvenc_encoder_deps="nvenc"
2834 hevc_qsv_decoder_deps="libmfx"
2835 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2836 hevc_qsv_encoder_deps="libmfx"
2837 hevc_qsv_encoder_select="hevcparse qsvenc"
2838 hevc_rkmpp_decoder_deps="rkmpp"
2839 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2840 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2841 hevc_vaapi_encoder_select="vaapi_encode golomb"
2842 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2843 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2844 mjpeg_cuvid_decoder_deps="cuda cuvid"
2845 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2846 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2847 mpeg1_cuvid_decoder_deps="cuda cuvid"
2848 mpeg1_vdpau_decoder_deps="vdpau"
2849 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2850 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2851 mpeg2_crystalhd_decoder_select="crystalhd"
2852 mpeg2_cuvid_decoder_deps="cuda cuvid"
2853 mpeg2_mmal_decoder_deps="mmal"
2854 mpeg2_mediacodec_decoder_deps="mediacodec"
2855 mpeg2_qsv_decoder_deps="libmfx"
2856 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2857 mpeg2_qsv_encoder_deps="libmfx"
2858 mpeg2_qsv_encoder_select="qsvenc"
2859 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2860 mpeg2_vaapi_encoder_select="vaapi_encode"
2861 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2862 mpeg4_crystalhd_decoder_select="crystalhd"
2863 mpeg4_cuvid_decoder_deps="cuda cuvid"
2864 mpeg4_mediacodec_decoder_deps="mediacodec"
2865 mpeg4_mmal_decoder_deps="mmal"
2866 mpeg4_omx_encoder_deps="omx"
2867 mpeg4_vdpau_decoder_deps="vdpau"
2868 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2869 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2870 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2871 mpeg_vdpau_decoder_deps="vdpau"
2872 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2873 msmpeg4_crystalhd_decoder_select="crystalhd"
2874 nvenc_h264_encoder_select="h264_nvenc_encoder"
2875 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2876 vc1_crystalhd_decoder_select="crystalhd"
2877 vc1_cuvid_decoder_deps="cuda cuvid"
2878 vc1_mmal_decoder_deps="mmal"
2879 vc1_vdpau_decoder_deps="vdpau"
2880 vc1_vdpau_decoder_select="vc1_decoder"
2881 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2882 vp8_cuvid_decoder_deps="cuda cuvid"
2883 vp8_mediacodec_decoder_deps="mediacodec"
2884 vp8_qsv_decoder_deps="libmfx"
2885 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2886 vp8_rkmpp_decoder_deps="rkmpp"
2887 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2888 vp8_vaapi_encoder_select="vaapi_encode"
2889 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2890 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2891 vp9_cuvid_decoder_deps="cuda cuvid"
2892 vp9_mediacodec_decoder_deps="mediacodec"
2893 vp9_rkmpp_decoder_deps="rkmpp"
2894 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2895 vp9_vaapi_encoder_select="vaapi_encode"
2896 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2897 wmv3_crystalhd_decoder_select="crystalhd"
2898 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2899
2900 # parsers
2901 h264_parser_select="golomb h264dsp h264parse"
2902 hevc_parser_select="hevcparse"
2903 mpegaudio_parser_select="mpegaudioheader"
2904 mpegvideo_parser_select="mpegvideo"
2905 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2906 vc1_parser_select="vc1dsp"
2907
2908 # bitstream_filters
2909 mjpeg2jpeg_bsf_select="jpegtables"
2910
2911 # external libraries
2912 aac_at_decoder_deps="audiotoolbox"
2913 ac3_at_decoder_deps="audiotoolbox"
2914 ac3_at_decoder_select="ac3_parser"
2915 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2916 alac_at_decoder_deps="audiotoolbox"
2917 amr_nb_at_decoder_deps="audiotoolbox"
2918 avisynth_deps_any="libdl LoadLibrary"
2919 avisynth_demuxer_deps="avisynth"
2920 avisynth_demuxer_select="riffdec"
2921 eac3_at_decoder_deps="audiotoolbox"
2922 eac3_at_decoder_select="ac3_parser"
2923 gsm_ms_at_decoder_deps="audiotoolbox"
2924 ilbc_at_decoder_deps="audiotoolbox"
2925 mp1_at_decoder_deps="audiotoolbox"
2926 mp2_at_decoder_deps="audiotoolbox"
2927 mp3_at_decoder_deps="audiotoolbox"
2928 mp1_at_decoder_select="mpegaudioheader"
2929 mp2_at_decoder_select="mpegaudioheader"
2930 mp3_at_decoder_select="mpegaudioheader"
2931 pcm_alaw_at_decoder_deps="audiotoolbox"
2932 pcm_mulaw_at_decoder_deps="audiotoolbox"
2933 qdmc_at_decoder_deps="audiotoolbox"
2934 qdm2_at_decoder_deps="audiotoolbox"
2935 aac_at_encoder_deps="audiotoolbox"
2936 aac_at_encoder_select="audio_frame_queue"
2937 alac_at_encoder_deps="audiotoolbox"
2938 alac_at_encoder_select="audio_frame_queue"
2939 ilbc_at_encoder_deps="audiotoolbox"
2940 ilbc_at_encoder_select="audio_frame_queue"
2941 pcm_alaw_at_encoder_deps="audiotoolbox"
2942 pcm_alaw_at_encoder_select="audio_frame_queue"
2943 pcm_mulaw_at_encoder_deps="audiotoolbox"
2944 pcm_mulaw_at_encoder_select="audio_frame_queue"
2945 chromaprint_muxer_deps="chromaprint"
2946 h264_videotoolbox_encoder_deps="pthreads"
2947 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2948 libcelt_decoder_deps="libcelt"
2949 libfdk_aac_decoder_deps="libfdk_aac"
2950 libfdk_aac_encoder_deps="libfdk_aac"
2951 libfdk_aac_encoder_select="audio_frame_queue"
2952 libgme_demuxer_deps="libgme"
2953 libgsm_decoder_deps="libgsm"
2954 libgsm_encoder_deps="libgsm"
2955 libgsm_ms_decoder_deps="libgsm"
2956 libgsm_ms_encoder_deps="libgsm"
2957 libilbc_decoder_deps="libilbc"
2958 libilbc_encoder_deps="libilbc"
2959 libkvazaar_encoder_deps="libkvazaar"
2960 libmodplug_demuxer_deps="libmodplug"
2961 libmp3lame_encoder_deps="libmp3lame"
2962 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2963 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2964 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2965 libopencore_amrnb_encoder_select="audio_frame_queue"
2966 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2967 libopenh264_decoder_deps="libopenh264"
2968 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2969 libopenh264_encoder_deps="libopenh264"
2970 libopenjpeg_decoder_deps="libopenjpeg"
2971 libopenjpeg_encoder_deps="libopenjpeg"
2972 libopenmpt_demuxer_deps="libopenmpt"
2973 libopus_decoder_deps="libopus"
2974 libopus_encoder_deps="libopus"
2975 libopus_encoder_select="audio_frame_queue"
2976 librsvg_decoder_deps="librsvg"
2977 libshine_encoder_deps="libshine"
2978 libshine_encoder_select="audio_frame_queue"
2979 libspeex_decoder_deps="libspeex"
2980 libspeex_encoder_deps="libspeex"
2981 libspeex_encoder_select="audio_frame_queue"
2982 libtheora_encoder_deps="libtheora"
2983 libtwolame_encoder_deps="libtwolame"
2984 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2985 libvorbis_decoder_deps="libvorbis"
2986 libvorbis_encoder_deps="libvorbis libvorbisenc"
2987 libvorbis_encoder_select="audio_frame_queue"
2988 libvpx_vp8_decoder_deps="libvpx"
2989 libvpx_vp8_encoder_deps="libvpx"
2990 libvpx_vp9_decoder_deps="libvpx"
2991 libvpx_vp9_encoder_deps="libvpx"
2992 libwavpack_encoder_deps="libwavpack"
2993 libwavpack_encoder_select="audio_frame_queue"
2994 libwebp_encoder_deps="libwebp"
2995 libwebp_anim_encoder_deps="libwebp"
2996 libx262_encoder_deps="libx262"
2997 libx264_encoder_deps="libx264"
2998 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2999 libx264rgb_encoder_select="libx264_encoder"
3000 libx265_encoder_deps="libx265"
3001 libxavs_encoder_deps="libxavs"
3002 libxvid_encoder_deps="libxvid"
3003 libzvbi_teletext_decoder_deps="libzvbi"
3004 videotoolbox_suggest="coreservices"
3005 videotoolbox_deps="corefoundation coremedia corevideo"
3006 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3007 videotoolbox_encoder_suggest="vda_framework"
3008
3009 # demuxers / muxers
3010 ac3_demuxer_select="ac3_parser"
3011 aiff_muxer_select="iso_media"
3012 asf_demuxer_select="riffdec"
3013 asf_o_demuxer_select="riffdec"
3014 asf_muxer_select="riffenc"
3015 asf_stream_muxer_select="asf_muxer"
3016 avi_demuxer_select="iso_media riffdec exif"
3017 avi_muxer_select="riffenc"
3018 caf_demuxer_select="iso_media riffdec"
3019 caf_muxer_select="iso_media"
3020 dash_muxer_select="mp4_muxer"
3021 dash_demuxer_deps="libxml2"
3022 dirac_demuxer_select="dirac_parser"
3023 dts_demuxer_select="dca_parser"
3024 dtshd_demuxer_select="dca_parser"
3025 dv_demuxer_select="dvprofile"
3026 dv_muxer_select="dvprofile"
3027 dxa_demuxer_select="riffdec"
3028 eac3_demuxer_select="ac3_parser"
3029 f4v_muxer_select="mov_muxer"
3030 fifo_muxer_deps="threads"
3031 flac_demuxer_select="flac_parser"
3032 hds_muxer_select="flv_muxer"
3033 hls_muxer_select="mpegts_muxer"
3034 hls_muxer_suggest="gcrypt openssl"
3035 image2_alias_pix_demuxer_select="image2_demuxer"
3036 image2_brender_pix_demuxer_select="image2_demuxer"
3037 ipod_muxer_select="mov_muxer"
3038 ismv_muxer_select="mov_muxer"
3039 matroska_audio_muxer_select="matroska_muxer"
3040 matroska_demuxer_select="iso_media riffdec"
3041 matroska_demuxer_suggest="bzlib lzo zlib"
3042 matroska_muxer_select="iso_media riffenc"
3043 mmf_muxer_select="riffenc"
3044 mov_demuxer_select="iso_media riffdec"
3045 mov_demuxer_suggest="zlib"
3046 mov_muxer_select="iso_media riffenc rtpenc_chain"
3047 mp3_demuxer_select="mpegaudio_parser"
3048 mp3_muxer_select="mpegaudioheader"
3049 mp4_muxer_select="mov_muxer"
3050 mpegts_demuxer_select="iso_media"
3051 mpegts_muxer_select="adts_muxer latm_muxer"
3052 mpegtsraw_demuxer_select="mpegts_demuxer"
3053 mxf_d10_muxer_select="mxf_muxer"
3054 mxf_opatom_muxer_select="mxf_muxer"
3055 nut_muxer_select="riffenc"
3056 nuv_demuxer_select="riffdec"
3057 oga_muxer_select="ogg_muxer"
3058 ogg_demuxer_select="dirac_parse"
3059 ogv_muxer_select="ogg_muxer"
3060 opus_muxer_select="ogg_muxer"
3061 psp_muxer_select="mov_muxer"
3062 rtp_demuxer_select="sdp_demuxer"
3063 rtp_muxer_select="golomb"
3064 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3065 rtsp_demuxer_select="http_protocol rtpdec"
3066 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3067 sap_demuxer_select="sdp_demuxer"
3068 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3069 sdp_demuxer_select="rtpdec"
3070 smoothstreaming_muxer_select="ismv_muxer"
3071 spdif_muxer_select="aac_parser"
3072 spx_muxer_select="ogg_muxer"
3073 swf_demuxer_suggest="zlib"
3074 tak_demuxer_select="tak_parser"
3075 tg2_muxer_select="mov_muxer"
3076 tgp_muxer_select="mov_muxer"
3077 vobsub_demuxer_select="mpegps_demuxer"
3078 w64_demuxer_select="wav_demuxer"
3079 w64_muxer_select="wav_muxer"
3080 wav_demuxer_select="riffdec"
3081 wav_muxer_select="riffenc"
3082 webm_muxer_select="iso_media riffenc"
3083 webm_dash_manifest_demuxer_select="matroska_demuxer"
3084 wtv_demuxer_select="mpegts_demuxer riffdec"
3085 wtv_muxer_select="mpegts_muxer riffenc"
3086 xmv_demuxer_select="riffdec"
3087 xwma_demuxer_select="riffdec"
3088
3089 # indevs / outdevs
3090 alsa_indev_deps="alsa"
3091 alsa_outdev_deps="alsa"
3092 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3093 avfoundation_indev_suggest="coregraphics applicationservices"
3094 avfoundation_indev_extralibs="-framework Foundation"
3095 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3096 caca_outdev_deps="libcaca"
3097 decklink_deps_any="libdl LoadLibrary"
3098 decklink_indev_deps="decklink threads"
3099 decklink_indev_extralibs="-lstdc++"
3100 decklink_outdev_deps="decklink threads"
3101 decklink_outdev_extralibs="-lstdc++"
3102 libndi_newtek_indev_deps="libndi_newtek"
3103 libndi_newtek_indev_extralibs="-lndi"
3104 libndi_newtek_outdev_deps="libndi_newtek"
3105 libndi_newtek_outdev_extralibs="-lndi"
3106 dshow_indev_deps="IBaseFilter"
3107 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3108 fbdev_indev_deps="linux_fb_h"
3109 fbdev_outdev_deps="linux_fb_h"
3110 gdigrab_indev_deps="CreateDIBSection"
3111 gdigrab_indev_extralibs="-lgdi32"
3112 gdigrab_indev_select="bmp_decoder"
3113 iec61883_indev_deps="libiec61883"
3114 jack_indev_deps="jack"
3115 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3116 kmsgrab_indev_deps="libdrm"
3117 lavfi_indev_deps="avfilter"
3118 libcdio_indev_deps="libcdio"
3119 libdc1394_indev_deps="libdc1394"
3120 openal_indev_deps="openal"
3121 opengl_outdev_deps="opengl"
3122 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3123 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3124 pulse_indev_deps="libpulse"
3125 pulse_outdev_deps="libpulse"
3126 sdl2_outdev_deps="sdl2"
3127 sndio_indev_deps="sndio"
3128 sndio_outdev_deps="sndio"
3129 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3130 v4l2_indev_suggest="libv4l2"
3131 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3132 v4l2_outdev_suggest="libv4l2"
3133 vfwcap_indev_deps="vfw32 vfwcap_defines"
3134 xcbgrab_indev_deps="libxcb"
3135 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3136 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3137 xv_outdev_extralibs="-lXv -lX11 -lXext"
3138
3139 # protocols
3140 async_protocol_deps="threads"
3141 bluray_protocol_deps="libbluray"
3142 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3143 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3144 ffrtmpcrypt_protocol_select="tcp_protocol"
3145 ffrtmphttp_protocol_conflict="librtmp_protocol"
3146 ffrtmphttp_protocol_select="http_protocol"
3147 ftp_protocol_select="tcp_protocol"
3148 gopher_protocol_select="network"
3149 http_protocol_select="tcp_protocol"
3150 http_protocol_suggest="zlib"
3151 httpproxy_protocol_select="tcp_protocol"
3152 httpproxy_protocol_suggest="zlib"
3153 https_protocol_select="tls_protocol"
3154 https_protocol_suggest="zlib"
3155 icecast_protocol_select="http_protocol"
3156 librtmp_protocol_deps="librtmp"
3157 librtmpe_protocol_deps="librtmp"
3158 librtmps_protocol_deps="librtmp"
3159 librtmpt_protocol_deps="librtmp"
3160 librtmpte_protocol_deps="librtmp"
3161 libsmbclient_protocol_deps="libsmbclient gplv3"
3162 libssh_protocol_deps="libssh"
3163 mmsh_protocol_select="http_protocol"
3164 mmst_protocol_select="network"
3165 rtmp_protocol_conflict="librtmp_protocol"
3166 rtmp_protocol_select="tcp_protocol"
3167 rtmp_protocol_suggest="zlib"
3168 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3169 rtmpe_protocol_suggest="zlib"
3170 rtmps_protocol_conflict="librtmp_protocol"
3171 rtmps_protocol_select="tls_protocol"
3172 rtmps_protocol_suggest="zlib"
3173 rtmpt_protocol_select="ffrtmphttp_protocol"
3174 rtmpt_protocol_suggest="zlib"
3175 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3176 rtmpte_protocol_suggest="zlib"
3177 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3178 rtmpts_protocol_suggest="zlib"
3179 rtp_protocol_select="udp_protocol"
3180 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3181 sctp_protocol_select="network"
3182 srtp_protocol_select="rtp_protocol srtp"
3183 tcp_protocol_select="network"
3184 tls_gnutls_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol"
3185 tls_gnutls_protocol_deps="gnutls"
3186 tls_gnutls_protocol_select="tcp_protocol"
3187 tls_openssl_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol"
3188 tls_openssl_protocol_deps="openssl"
3189 tls_openssl_protocol_select="tcp_protocol"
3190 tls_schannel_protocol_deps="schannel"
3191 tls_schannel_protocol_select="tcp_protocol"
3192 tls_securetransport_protocol_deps="securetransport"
3193 tls_securetransport_protocol_select="tcp_protocol"
3194 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3195 udp_protocol_select="network"
3196 udplite_protocol_select="network"
3197 unix_protocol_deps="sys_un_h"
3198 unix_protocol_select="network"
3199
3200 # filters
3201 afftfilt_filter_deps="avcodec"
3202 afftfilt_filter_select="fft"
3203 afir_filter_deps="avcodec"
3204 afir_filter_select="fft"
3205 amovie_filter_deps="avcodec avformat"
3206 aresample_filter_deps="swresample"
3207 ass_filter_deps="libass"
3208 atempo_filter_deps="avcodec"
3209 atempo_filter_select="rdft"
3210 azmq_filter_deps="libzmq"
3211 blackframe_filter_deps="gpl"
3212 boxblur_filter_deps="gpl"
3213 bs2b_filter_deps="libbs2b"
3214 colormatrix_filter_deps="gpl"
3215 coreimage_filter_deps="coreimage appkit"
3216 coreimage_filter_extralibs="-framework OpenGL"
3217 coreimagesrc_filter_deps="coreimage appkit"
3218 coreimagesrc_filter_extralibs="-framework OpenGL"
3219 cover_rect_filter_deps="avcodec avformat gpl"
3220 cropdetect_filter_deps="gpl"
3221 deinterlace_qsv_filter_deps="libmfx"
3222 deinterlace_vaapi_filter_deps="vaapi"
3223 delogo_filter_deps="gpl"
3224 deshake_filter_select="pixelutils"
3225 deshake_filter_suggest="opencl"
3226 drawtext_filter_deps="libfreetype"
3227 drawtext_filter_suggest="libfontconfig libfribidi"
3228 elbg_filter_deps="avcodec"
3229 eq_filter_deps="gpl"
3230 fftfilt_filter_deps="avcodec"
3231 fftfilt_filter_select="rdft"
3232 find_rect_filter_deps="avcodec avformat gpl"
3233 firequalizer_filter_deps="avcodec"
3234 firequalizer_filter_select="rdft"
3235 flite_filter_deps="libflite"
3236 framerate_filter_select="pixelutils"
3237 frei0r_filter_deps="frei0r libdl"
3238 frei0r_src_filter_deps="frei0r libdl"
3239 fspp_filter_deps="gpl"
3240 geq_filter_deps="gpl"
3241 histeq_filter_deps="gpl"
3242 hqdn3d_filter_deps="gpl"
3243 interlace_filter_deps="gpl"
3244 kerndeint_filter_deps="gpl"
3245 ladspa_filter_deps="ladspa libdl"
3246 mcdeint_filter_deps="avcodec gpl"
3247 movie_filter_deps="avcodec avformat"
3248 mpdecimate_filter_deps="gpl"
3249 mpdecimate_filter_select="pixelutils"
3250 mptestsrc_filter_deps="gpl"
3251 negate_filter_deps="lut_filter"
3252 nnedi_filter_deps="gpl"
3253 ocr_filter_deps="libtesseract"
3254 ocv_filter_deps="libopencv"
3255 owdenoise_filter_deps="gpl"
3256 pan_filter_deps="swresample"
3257 perspective_filter_deps="gpl"
3258 phase_filter_deps="gpl"
3259 pp7_filter_deps="gpl"
3260 pp_filter_deps="gpl postproc"
3261 pullup_filter_deps="gpl"
3262 removelogo_filter_deps="avcodec avformat swscale"
3263 repeatfields_filter_deps="gpl"
3264 resample_filter_deps="avresample"
3265 rubberband_filter_deps="librubberband"
3266 sab_filter_deps="gpl swscale"
3267 scale2ref_filter_deps="swscale"
3268 scale_filter_deps="swscale"
3269 scale_qsv_filter_deps="libmfx"
3270 select_filter_select="pixelutils"
3271 showcqt_filter_deps="avcodec avformat swscale"
3272 showcqt_filter_suggest="libfontconfig libfreetype"
3273 showcqt_filter_select="fft"
3274 showfreqs_filter_deps="avcodec"
3275 showfreqs_filter_select="fft"
3276 showspectrum_filter_deps="avcodec"
3277 showspectrum_filter_select="fft"
3278 showspectrumpic_filter_deps="avcodec"
3279 showspectrumpic_filter_select="fft"
3280 signature_filter_deps="gpl avcodec avformat"
3281 smartblur_filter_deps="gpl swscale"
3282 sofalizer_filter_deps="libmysofa avcodec"
3283 sofalizer_filter_select="fft"
3284 spectrumsynth_filter_deps="avcodec"
3285 spectrumsynth_filter_select="fft"
3286 spp_filter_deps="gpl avcodec"
3287 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3288 stereo3d_filter_deps="gpl"
3289 subtitles_filter_deps="avformat avcodec libass"
3290 super2xsai_filter_deps="gpl"
3291 pixfmts_super2xsai_test_deps="super2xsai_filter"
3292 tinterlace_filter_deps="gpl"
3293 tinterlace_merge_test_deps="tinterlace_filter"
3294 tinterlace_pad_test_deps="tinterlace_filter"
3295 tonemap_filter_deps="const_nan"
3296 uspp_filter_deps="gpl avcodec"
3297 unsharp_filter_suggest="opencl"
3298 vaguedenoiser_filter_deps="gpl"
3299 vidstabdetect_filter_deps="libvidstab"
3300 vidstabtransform_filter_deps="libvidstab"
3301 libvmaf_filter_deps="libvmaf"
3302 zmq_filter_deps="libzmq"
3303 zoompan_filter_deps="swscale"
3304 zscale_filter_deps="libzimg const_nan"
3305 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3306
3307 # examples
3308 avio_dir_cmd_deps="avformat avutil"
3309 avio_reading_deps="avformat avcodec avutil"
3310 decode_audio_example_deps="avcodec avutil"
3311 decode_video_example_deps="avcodec avutil"
3312 demuxing_decoding_example_deps="avcodec avformat avutil"
3313 encode_audio_example_deps="avcodec avutil"
3314 encode_video_example_deps="avcodec avutil"
3315 extract_mvs_example_deps="avcodec avformat avutil"
3316 filter_audio_example_deps="avfilter avutil"
3317 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3318 filtering_video_example_deps="avfilter avcodec avformat avutil"
3319 http_multiclient_example_deps="avformat avutil fork"
3320 hw_decode_example_deps="avcodec avformat avutil"
3321 metadata_example_deps="avformat avutil"
3322 muxing_example_deps="avcodec avformat avutil swscale"
3323 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3324 remuxing_example_deps="avcodec avformat avutil"
3325 resampling_audio_example_deps="avutil swresample"
3326 scaling_video_example_deps="avutil swscale"
3327 transcode_aac_example_deps="avcodec avformat swresample"
3328 transcoding_example_deps="avfilter avcodec avformat avutil"
3329
3330 # EXTRALIBS_LIST
3331 cpu_init_extralibs="pthreads_extralibs"
3332 cws2fws_extralibs="zlib_extralibs"
3333
3334 # libraries, in linking order
3335 avcodec_deps="avutil"
3336 avcodec_suggest="libm"
3337 avcodec_select="null_bsf"
3338 avdevice_deps="avformat avcodec avutil"
3339 avdevice_suggest="libm"
3340 avfilter_deps="avutil"
3341 avfilter_suggest="libm"
3342 avformat_deps="avcodec avutil"
3343 avformat_suggest="libm network"
3344 avresample_deps="avutil"
3345 avresample_suggest="libm"
3346 avutil_suggest="clock_gettime libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3347 postproc_deps="avutil gpl"
3348 postproc_suggest="libm"
3349 swresample_deps="avutil"
3350 swresample_suggest="libm libsoxr"
3351 swscale_deps="avutil"
3352 swscale_suggest="libm"
3353
3354 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3355 avfilter_extralibs="pthreads_extralibs"
3356 avutil_extralibs="nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3357
3358 # programs
3359 ffmpeg_deps="avcodec avfilter avformat swresample"
3360 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3361                null_filter
3362                trim_filter"
3363 ffmpeg_suggest="ole32 psapi shell32"
3364 ffplay_deps="avcodec avformat swscale swresample sdl2"
3365 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3366 ffplay_suggest="shell32"
3367 ffprobe_deps="avcodec avformat"
3368 ffprobe_suggest="shell32"
3369 ffserver_deps="avformat fork sarestart"
3370 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3371
3372 # documentation
3373 podpages_deps="perl"
3374 manpages_deps="perl pod2man"
3375 htmlpages_deps="perl"
3376 htmlpages_deps_any="makeinfo_html texi2html"
3377 txtpages_deps="perl makeinfo"
3378 doc_deps_any="manpages htmlpages podpages txtpages"
3379
3380 # default parameters
3381
3382 logfile="ffbuild/config.log"
3383
3384 # installation paths
3385 prefix_default="/usr/local"
3386 bindir_default='${prefix}/bin'
3387 datadir_default='${prefix}/share/ffmpeg'
3388 docdir_default='${prefix}/share/doc/ffmpeg'
3389 incdir_default='${prefix}/include'
3390 libdir_default='${prefix}/lib'
3391 mandir_default='${prefix}/share/man'
3392
3393 # toolchain
3394 ar_default="ar"
3395 cc_default="gcc"
3396 cxx_default="g++"
3397 host_cc_default="gcc"
3398 doxygen_default="doxygen"
3399 install="install"
3400 ln_s_default="ln -s -f"
3401 nm_default="nm -g"
3402 pkg_config_default=pkg-config
3403 ranlib_default="ranlib"
3404 strip_default="strip"
3405 version_script='--version-script'
3406 x86asmexe_default="nasm"
3407 windres_default="windres"
3408 nvcc_default="nvcc"
3409 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3410 striptype="direct"
3411
3412 # OS
3413 target_os_default=$(tolower $(uname -s))
3414 host_os=$target_os_default
3415
3416 # machine
3417 if test "$target_os_default" = aix; then
3418     arch_default=$(uname -p)
3419     strip_default="strip -X32_64"
3420 else
3421     arch_default=$(uname -m)
3422 fi
3423 cpu="generic"
3424 intrinsics="none"
3425
3426 # configurable options
3427 enable $PROGRAM_LIST
3428 enable $DOCUMENT_LIST
3429 enable $EXAMPLE_LIST
3430 enable $(filter_out avresample $LIBRARY_LIST)
3431 enable stripping
3432
3433 enable asm
3434 enable debug
3435 enable doc
3436 enable faan faandct faanidct
3437 enable optimizations
3438 enable runtime_cpudetect
3439 enable safe_bitstream_reader
3440 enable static
3441 enable swscale_alpha
3442 enable valgrind_backtrace
3443
3444 sws_max_filter_size_default=256
3445 set_default sws_max_filter_size
3446
3447 # internal components are enabled by default
3448 enable $EXTRALIBS_LIST
3449
3450 # Avoid external, non-system, libraries getting enabled by dependency resolution
3451 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3452
3453 # build settings
3454 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3455 LIBPREF="lib"
3456 LIBSUF=".a"
3457 FULLNAME='$(NAME)$(BUILDSUF)'
3458 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3459 SLIBPREF="lib"
3460 SLIBSUF=".so"
3461 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3462 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3463 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3464 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3465 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3466 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3467 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3468
3469 asflags_filter=echo
3470 cflags_filter=echo
3471 ldflags_filter=echo
3472
3473 AS_C='-c'
3474 AS_O='-o $@'
3475 CC_C='-c'
3476 CC_E='-E -o $@'
3477 CC_O='-o $@'
3478 CXX_C='-c'
3479 CXX_O='-o $@'
3480 OBJCC_C='-c'
3481 OBJCC_E='-E -o $@'
3482 OBJCC_O='-o $@'
3483 X86ASM_O='-o $@'
3484 LD_O='-o $@'
3485 LD_LIB='-l%'
3486 LD_PATH='-L'
3487 HOSTCC_C='-c'
3488 HOSTCC_E='-E -o $@'
3489 HOSTCC_O='-o $@'
3490 HOSTLD_O='-o $@'
3491 NVCC_C='-c'
3492 NVCC_O='-o $@'
3493
3494 host_extralibs='-lm'
3495 host_cflags_filter=echo
3496 host_ldflags_filter=echo
3497
3498 target_path='$(CURDIR)'
3499
3500 # since the object filename is not given with the -MM flag, the compiler
3501 # is only able to print the basename, and we must add the path ourselves
3502 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3503 DEPFLAGS='-MM'
3504
3505 mkdir -p ffbuild
3506
3507 # find source path
3508 if test -f configure; then
3509     source_path=.
3510 else
3511     source_path=$(cd $(dirname "$0"); pwd)
3512     case "$source_path" in
3513         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3514     esac
3515     test -e "$source_path/config.h" &&
3516         die "Out of tree builds are impossible with config.h in source dir."
3517 fi
3518
3519 for v in "$@"; do
3520     r=${v#*=}
3521     l=${v%"$r"}
3522     r=$(sh_quote "$r")
3523     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3524 done
3525
3526 find_things(){
3527     thing=$1
3528     pattern=$2
3529     file=$source_path/$3
3530     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3531 }
3532
3533 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3534 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3535 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3536 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3537 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3538 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3539 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3540 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3541 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3542
3543 find_things_extern(){
3544     thing=$1
3545     pattern=$2
3546     file=$source_path/$3
3547     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3548 }
3549
3550 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3551 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3552
3553 AVCODEC_COMPONENTS_LIST="
3554     $BSF_LIST
3555     $DECODER_LIST
3556     $ENCODER_LIST
3557     $HWACCEL_LIST
3558     $PARSER_LIST
3559 "
3560
3561 AVDEVICE_COMPONENTS_LIST="
3562     $INDEV_LIST
3563     $OUTDEV_LIST
3564 "
3565
3566 AVFILTER_COMPONENTS_LIST="
3567     $FILTER_LIST
3568 "
3569
3570 AVFORMAT_COMPONENTS_LIST="
3571     $DEMUXER_LIST
3572     $MUXER_LIST
3573     $PROTOCOL_LIST
3574 "
3575
3576 ALL_COMPONENTS="
3577     $AVCODEC_COMPONENTS_LIST
3578     $AVDEVICE_COMPONENTS_LIST
3579     $AVFILTER_COMPONENTS_LIST
3580     $AVFORMAT_COMPONENTS_LIST
3581 "
3582
3583 for n in $COMPONENT_LIST; do
3584     v=$(toupper ${n%s})_LIST
3585     eval enable \$$v
3586     eval ${n}_if_any="\$$v"
3587 done
3588
3589 enable $ARCH_EXT_LIST
3590
3591 die_unknown(){
3592     echo "Unknown option \"$1\"."
3593     echo "See $0 --help for available options."
3594     exit 1
3595 }
3596
3597 print_in_columns() {
3598     cols=$(expr $ncols / 24)
3599     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3600 }
3601
3602 show_list() {
3603     suffix=_$1
3604     shift
3605     echo $* | sed s/$suffix//g | print_in_columns
3606     exit 0
3607 }
3608
3609 rand_list(){
3610     IFS=', '
3611     set -- $*
3612     unset IFS
3613     for thing; do
3614         comp=${thing%:*}
3615         prob=${thing#$comp}
3616         prob=${prob#:}
3617         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3618         echo "prob ${prob:-0.5}"
3619         printf '%s\n' $comp
3620     done
3621 }
3622
3623 do_random(){
3624     action=$1
3625     shift
3626     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3627     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3628 }
3629
3630 for opt do
3631     optval="${opt#*=}"
3632     case "$opt" in
3633         --extra-ldflags=*)
3634             add_ldflags $optval
3635         ;;
3636         --extra-ldexeflags=*)
3637             add_ldexeflags $optval
3638         ;;
3639         --extra-ldlibflags=*)
3640             add_ldlibflags $optval
3641         ;;
3642         --extra-libs=*)
3643             add_extralibs $optval
3644         ;;
3645         --disable-devices)
3646             disable $INDEV_LIST $OUTDEV_LIST
3647         ;;
3648         --enable-debug=*)
3649             debuglevel="$optval"
3650         ;;
3651         --disable-programs)
3652             disable $PROGRAM_LIST
3653         ;;
3654         --disable-everything)
3655             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3656         ;;
3657         --disable-all)
3658             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3659             disable $LIBRARY_LIST $PROGRAM_LIST doc
3660             enable avutil
3661         ;;
3662         --enable-random|--disable-random)
3663             action=${opt%%-random}
3664             do_random ${action#--} $COMPONENT_LIST
3665         ;;
3666         --enable-random=*|--disable-random=*)
3667             action=${opt%%-random=*}
3668             do_random ${action#--} $optval
3669         ;;
3670         --enable-sdl)
3671             enable sdl2
3672         ;;
3673         --enable-*=*|--disable-*=*)
3674             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3675             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3676             eval list=\$$(toupper $thing)_LIST
3677             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3678             list=$(filter "$name" $list)
3679             [ "$list" = "" ] && warn "Option $opt did not match anything"
3680             $action $list
3681         ;;
3682         --enable-yasm|--disable-yasm)
3683             warn "The ${opt} option is only provided for compatibility and will be\n"\
3684                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3685             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3686         ;;
3687         --yasmexe=*)
3688             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3689                  "removed in the future. Use --x86asmexe instead."
3690             x86asmexe="$optval"
3691         ;;
3692         --enable-?*|--disable-?*)
3693             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3694             if is_in $option $COMPONENT_LIST; then
3695                 test $action = disable && action=unset
3696                 eval $action \$$(toupper ${option%s})_LIST
3697             elif is_in $option $CMDLINE_SELECT; then
3698                 $action $option
3699             else
3700                 die_unknown $opt
3701             fi
3702         ;;
3703         --list-*)
3704             NAME="${opt#--list-}"
3705             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3706             NAME=${NAME%s}
3707             eval show_list $NAME \$$(toupper $NAME)_LIST
3708         ;;
3709         --help|-h) show_help
3710         ;;
3711         --quiet|-q) quiet=yes
3712         ;;
3713         --fatal-warnings) enable fatal_warnings
3714         ;;
3715         --libfuzzer=*)
3716             libfuzzer_path="$optval"
3717         ;;
3718         *)
3719             optname="${opt%%=*}"
3720             optname="${optname#--}"
3721             optname=$(echo "$optname" | sed 's/-/_/g')
3722             if is_in $optname $CMDLINE_SET; then
3723                 eval $optname='$optval'
3724             elif is_in $optname $CMDLINE_APPEND; then
3725                 append $optname "$optval"
3726             else
3727                 die_unknown $opt
3728             fi
3729         ;;
3730     esac
3731 done
3732
3733 for e in $env; do
3734     eval "export $e"
3735 done
3736
3737 if disabled autodetect; then
3738
3739     # Unless iconv is explicitely disabled by the user, we still want to probe
3740     # for the iconv from the libc.
3741     disabled iconv || enable libc_iconv
3742
3743     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3744     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3745 fi
3746 # Mark specifically enabled, but normally autodetected libraries as requested.
3747 for lib in $AUTODETECT_LIBS; do
3748     enabled $lib && request $lib
3749 done
3750 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3751 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3752 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3753
3754 disabled logging && logfile=/dev/null
3755
3756 die_license_disabled() {
3757     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3758 }
3759
3760 die_license_disabled_gpl() {
3761     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3762 }
3763
3764 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3765 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3766
3767 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3768 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3769
3770 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3771
3772 # Disable all the library-specific components if the library itself
3773 # is disabled, see AVCODEC_LIST and following _LIST variables.
3774
3775 disable_components(){
3776     disabled ${1} && disable $(
3777         eval components="\$$(toupper ${1})_COMPONENTS"
3778         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3779     )
3780 }
3781
3782 map 'disable_components $v' $LIBRARY_LIST
3783
3784 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3785 set >> $logfile
3786
3787 test -n "$valgrind" && toolchain="valgrind-memcheck"
3788
3789 enabled ossfuzz && {
3790     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3791     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3792 }
3793
3794 case "$toolchain" in
3795     *-asan)
3796         cc_default="${toolchain%-asan}"
3797         add_cflags  -fsanitize=address
3798         add_ldflags -fsanitize=address
3799     ;;
3800     *-msan)
3801         cc_default="${toolchain%-msan}"
3802         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3803         add_ldflags -fsanitize=memory
3804     ;;
3805     *-tsan)
3806         cc_default="${toolchain%-tsan}"
3807         add_cflags  -fsanitize=thread -fPIE
3808         add_ldflags -fsanitize=thread -pie
3809         case "$toolchain" in
3810             gcc-tsan)
3811                 add_cflags  -fPIC
3812                 add_ldflags -fPIC
3813                 ;;
3814         esac
3815     ;;
3816     *-usan)
3817         cc_default="${toolchain%-usan}"
3818         add_cflags  -fsanitize=undefined
3819         add_ldflags -fsanitize=undefined
3820     ;;
3821     valgrind-*)
3822         target_exec_default="valgrind"
3823         case "$toolchain" in
3824             valgrind-massif)
3825                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3826                 ;;
3827             valgrind-memcheck)
3828                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3829                 ;;
3830         esac
3831     ;;
3832     msvc)
3833         # Check whether the current MSVC version needs the C99 converter.
3834         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3835         # support enough of C99 to build ffmpeg. Default to the new
3836         # behaviour if the regexp was unable to match anything, since this
3837         # successfully parses the version number of existing supported
3838         # versions that require the converter (MSVC 2010 and 2012).
3839         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3840         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3841             cc_default="cl"
3842             cxx_default="cl"
3843         else
3844             cc_default="c99wrap cl"
3845             cxx_default="c99wrap cl"
3846         fi
3847         ld_default="$source_path/compat/windows/mslink"
3848         nm_default="dumpbin -symbols"
3849         ar_default="lib"
3850         case "$arch" in
3851         arm*)
3852             as_default="armasm"
3853             ;;
3854         esac
3855         target_os_default="win32"
3856         # Use a relative path for TMPDIR. This makes sure all the
3857         # ffconf temp files are written with a relative path, avoiding
3858         # issues with msys/win32 path conversion for MSVC parameters
3859         # such as -Fo<file> or -out:<file>.
3860         TMPDIR=.
3861     ;;
3862     icl)
3863         cc_default="icl"
3864         ld_default="xilink"
3865         nm_default="dumpbin -symbols"
3866         ar_default="xilib"
3867         target_os_default="win32"
3868         TMPDIR=.
3869     ;;
3870     gcov)
3871         add_cflags  -fprofile-arcs -ftest-coverage
3872         add_ldflags -fprofile-arcs -ftest-coverage
3873     ;;
3874     llvm-cov)
3875         add_cflags -fprofile-arcs -ftest-coverage
3876         add_ldflags --coverage
3877     ;;
3878     hardened)
3879         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3880         add_cflags   -fno-strict-overflow -fstack-protector-all
3881         add_ldflags  -Wl,-z,relro -Wl,-z,now
3882         add_cflags   -fPIE
3883         add_ldexeflags -fPIE -pie
3884     ;;
3885     ?*)
3886         die "Unknown toolchain $toolchain"
3887     ;;
3888 esac
3889
3890 test -n "$cross_prefix" && enable cross_compile
3891
3892 if enabled cross_compile; then
3893     test -n "$arch" && test -n "$target_os" ||
3894         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3895 fi
3896
3897 ar_default="${cross_prefix}${ar_default}"
3898 cc_default="${cross_prefix}${cc_default}"
3899 cxx_default="${cross_prefix}${cxx_default}"
3900 nm_default="${cross_prefix}${nm_default}"
3901 pkg_config_default="${cross_prefix}${pkg_config_default}"
3902 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3903     ranlib_default="${cross_prefix}${ranlib_default} -D"
3904 else
3905     ranlib_default="${cross_prefix}${ranlib_default}"
3906 fi
3907 strip_default="${cross_prefix}${strip_default}"
3908 windres_default="${cross_prefix}${windres_default}"
3909
3910 sysinclude_default="${sysroot}/usr/include"
3911
3912 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3913     target_exec target_os x86asmexe nvcc
3914 enabled cross_compile || host_cc_default=$cc
3915 set_default host_cc
3916
3917 pkg_config_fail_message=""
3918 if ! $pkg_config --version >/dev/null 2>&1; then
3919     warn "$pkg_config not found, library detection may fail."
3920     pkg_config=false
3921 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3922     pkg_config_fail_message="
3923 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3924 fi
3925
3926 if test $doxygen != $doxygen_default && \
3927   ! $doxygen --version >/dev/null 2>&1; then
3928     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3929 fi
3930
3931 exesuf() {
3932     case $1 in
3933         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3934     esac
3935 }
3936
3937 EXESUF=$(exesuf $target_os)
3938 HOSTEXESUF=$(exesuf $host_os)
3939
3940 # set temporary file name
3941 : ${TMPDIR:=$TEMPDIR}
3942 : ${TMPDIR:=$TMP}
3943 : ${TMPDIR:=/tmp}
3944
3945 if [ -n "$tempprefix" ] ; then
3946     mktemp(){
3947         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3948         echo "$tmpname"
3949         mkdir "$tmpname"
3950     }
3951 elif ! check_cmd mktemp -u XXXXXX; then
3952     # simple replacement for missing mktemp
3953     # NOT SAFE FOR GENERAL USE
3954     mktemp(){
3955         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3956         echo "$tmpname"
3957         mkdir "$tmpname"
3958     }
3959 fi
3960
3961 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3962     die "Unable to create temporary directory in $TMPDIR."
3963
3964 tmpfile(){
3965     tmp="${FFTMPDIR}/test"$2
3966     (set -C; exec > $tmp) 2> /dev/null ||
3967         die "Unable to create temporary file in $FFTMPDIR."
3968     eval $1=$tmp
3969 }
3970
3971 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3972 trap 'exit 2' INT
3973
3974 tmpfile TMPASM .asm
3975 tmpfile TMPC   .c
3976 tmpfile TMPCPP .cpp
3977 tmpfile TMPE   $EXESUF
3978 tmpfile TMPH   .h
3979 tmpfile TMPM   .m
3980 tmpfile TMPO   .o
3981 tmpfile TMPS   .S
3982 tmpfile TMPSH  .sh
3983 tmpfile TMPV   .ver
3984
3985 unset -f mktemp
3986
3987 chmod +x $TMPE
3988
3989 # make sure we can execute files in $TMPDIR
3990 cat > $TMPSH 2>> $logfile <<EOF
3991 #! /bin/sh
3992 EOF
3993 chmod +x $TMPSH >> $logfile 2>&1
3994 if ! $TMPSH >> $logfile 2>&1; then
3995     cat <<EOF
3996 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3997 variable to another directory and make sure that it is not mounted noexec.
3998 EOF
3999     die "Sanity test failed."
4000 fi
4001
4002 armasm_flags(){
4003     for flag; do
4004         case $flag in
4005             # Filter out MSVC cl.exe options from cflags that shouldn't
4006             # be passed to gas-preprocessor
4007             -M[TD]*)                                            ;;
4008             *)                  echo $flag                      ;;
4009         esac
4010    done
4011 }
4012
4013 ccc_flags(){
4014     for flag; do
4015         case $flag in
4016             -std=c99)           echo -c99                       ;;
4017             -mcpu=*)            echo -arch ${flag#*=}           ;;
4018             -mieee)             echo -ieee                      ;;
4019             -O*|-fast)          echo $flag                      ;;
4020             -fno-math-errno)    echo -assume nomath_errno       ;;
4021             -g)                 echo -g3                        ;;
4022             -Wall)              echo -msg_enable level2         ;;
4023             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
4024             -Wl,*)              echo $flag                      ;;
4025             -f*|-W*)                                            ;;
4026             *)                  echo $flag                      ;;
4027         esac
4028    done
4029 }
4030
4031 cparser_flags(){
4032     for flag; do
4033         case $flag in
4034             -Wno-switch)             echo -Wno-switch-enum ;;
4035             -Wno-format-zero-length) ;;
4036             -Wdisabled-optimization) ;;
4037             -Wno-pointer-sign)       echo -Wno-other ;;
4038             *)                       echo $flag ;;
4039         esac
4040     done
4041 }
4042
4043 msvc_common_flags(){
4044     for flag; do
4045         case $flag in
4046             # In addition to specifying certain flags under the compiler
4047             # specific filters, they must be specified here as well or else the
4048             # generic catch all at the bottom will print the original flag.
4049             -Wall)                ;;
4050             -Wextra)              ;;
4051             -std=c99)             ;;
4052             # Common flags
4053             -fomit-frame-pointer) ;;
4054             -g)                   echo -Z7 ;;
4055             -fno-math-errno)      ;;
4056             -fno-common)          ;;
4057             -fno-signed-zeros)    ;;
4058             -fPIC)                ;;
4059             -mthumb)              ;;
4060             -march=*)             ;;
4061             -lz)                  echo zlib.lib ;;
4062             -lx264)               echo libx264.lib ;;
4063             -lstdc++)             ;;
4064             -l*)                  echo ${flag#-l}.lib ;;
4065             -LARGEADDRESSAWARE)   echo $flag ;;
4066             -L*)                  echo -libpath:${flag#-L} ;;
4067             *)                    echo $flag ;;
4068         esac
4069     done
4070 }
4071
4072 msvc_flags(){
4073     msvc_common_flags "$@"
4074     for flag; do
4075         case $flag in
4076             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4077                                        -wd4554 ;;
4078             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4079                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4080                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4081                                        -wd4307 \
4082                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4083         esac
4084     done
4085 }
4086
4087 icl_flags(){
4088     msvc_common_flags "$@"
4089     for flag; do
4090         case $flag in
4091             # Despite what Intel's documentation says -Wall, which is supported
4092             # on Windows, does enable remarks so disable them here.
4093             -Wall)                echo $flag -Qdiag-disable:remark ;;
4094             -std=c99)             echo -Qstd=c99 ;;
4095             -flto)                echo -ipo ;;
4096         esac
4097     done
4098 }
4099
4100 icc_flags(){
4101     for flag; do
4102         case $flag in
4103             -flto)                echo -ipo ;;
4104             *)                    echo $flag ;;
4105         esac
4106     done
4107 }
4108
4109 pgi_flags(){
4110     for flag; do
4111         case $flag in
4112             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4113             -fomit-frame-pointer) echo -Mnoframe ;;
4114             -g)                   echo -gopt ;;
4115             *)                    echo $flag ;;
4116         esac
4117     done
4118 }
4119
4120 suncc_flags(){
4121     for flag; do
4122         case $flag in
4123             -march=*|-mcpu=*)
4124                 case "${flag#*=}" in
4125                     native)                   echo -xtarget=native       ;;
4126                     v9|niagara)               echo -xarch=sparc          ;;
4127                     ultrasparc)               echo -xarch=sparcvis       ;;
4128                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4129                     i586|pentium)             echo -xchip=pentium        ;;
4130                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4131                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4132                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4133                     pentium4*)          echo -xtarget=pentium4           ;;
4134                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4135                     *-sse3)             echo -xarch=sse3                 ;;
4136                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4137                     bonnell)                   echo -xarch=ssse3         ;;
4138                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4139                     westmere)                  echo -xtarget=westmere    ;;
4140                     silvermont)                echo -xarch=sse4_2        ;;
4141                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4142                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4143                                                echo -xarch=avx           ;;
4144                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4145                     btver1)                    echo -xarch=amdsse4a      ;;
4146                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4147                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4148                     k8|opteron|athlon64|athlon-fx)
4149                                                echo -xarch=sse2a         ;;
4150                     athlon*)                   echo -xarch=pentium_proa  ;;
4151                 esac
4152                 ;;
4153             -std=c99)             echo -xc99              ;;
4154             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4155             -fPIC)                echo -KPIC -xcode=pic32 ;;
4156             -W*,*)                echo $flag              ;;
4157             -f*-*|-W*|-mimpure-text)                      ;;
4158             -shared)              echo -G                 ;;
4159             *)                    echo $flag              ;;
4160         esac
4161     done
4162 }
4163
4164 tms470_flags(){
4165     for flag; do
4166         case $flag in
4167             -march=*|-mcpu=*)
4168                 case "${flag#*=}" in
4169                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4170                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4171                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4172                     armv6*|arm11*)          echo -mv=6   ;;
4173                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4174                                             echo -mv=5e  ;;
4175                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4176                 esac
4177                 ;;
4178             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4179             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4180             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4181             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4182             -msoft-float)   echo --float_support=vfplib       ;;
4183             -O[0-3]|-mf=*)  echo $flag                        ;;
4184             -g)             echo -g -mn                       ;;
4185             -pds=*)         echo $flag                        ;;
4186             -D*|-I*)        echo $flag                        ;;
4187             --gcc|--abi=*)  echo $flag                        ;;
4188             -me)            echo $flag                        ;;
4189         esac
4190     done
4191 }
4192
4193 probe_cc(){
4194     pfx=$1
4195     _cc=$2
4196     first=$3
4197
4198     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4199     unset _ld_o _ldflags _ld_lib _ld_path
4200     unset _depflags _DEPCMD _DEPFLAGS
4201     _flags_filter=echo
4202
4203     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4204         true # no-op to avoid reading stdin in following checks
4205     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4206         _type=llvm_gcc
4207         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4208         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4209         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4210         _cflags_speed='-O3'
4211         _cflags_size='-Os'
4212     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4213         _type=gcc
4214         gcc_version=$($_cc --version | head -n1)
4215         gcc_basever=$($_cc -dumpversion)
4216         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4217         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4218         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4219         case $gcc_basever in
4220             2) ;;
4221             2.*) ;;
4222             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4223         esac
4224         if [ "$first" = true ]; then
4225             case $gcc_basever in
4226                 4.2*)
4227                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4228             esac
4229         fi
4230         _cflags_speed='-O3'
4231         _cflags_size='-Os'
4232     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4233         _type=icc
4234         _ident=$($_cc --version | head -n1)
4235         _depflags='-MMD'
4236         _cflags_speed='-O3'
4237         _cflags_size='-Os'
4238         _cflags_noopt='-O1'
4239         _flags_filter=icc_flags
4240     elif $_cc -v 2>&1 | grep -q xlc; then
4241         _type=xlc
4242         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4243         _cflags_speed='-O5'
4244         _cflags_size='-O5 -qcompact'
4245     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4246         _type=ccc
4247         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4248         _DEPFLAGS='-M'
4249         _cflags_speed='-fast'
4250         _cflags_size='-O1'
4251         _flags_filter=ccc_flags
4252     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4253         test -d "$sysroot" || die "No valid sysroot specified."
4254         _type=armcc
4255         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4256         armcc_conf="$PWD/armcc.conf"
4257         $_cc --arm_linux_configure                 \
4258              --arm_linux_config_file="$armcc_conf" \
4259              --configure_sysroot="$sysroot"        \
4260              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4261              die "Error creating armcc configuration file."
4262         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4263         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4264         as_default="${cross_prefix}gcc"
4265         _depflags='-MMD'
4266         _cflags_speed='-O3'
4267         _cflags_size='-Os'
4268     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4269         _type=tms470
4270         _ident=$($_cc -version | head -n1 | tr -s ' ')
4271         _flags='--gcc --abi=eabi -me'
4272         _cc_e='-ppl -fe=$@'
4273         _cc_o='-fe=$@'
4274         _depflags='-ppa -ppd=$(@:.o=.d)'
4275         _cflags_speed='-O3 -mf=5'
4276         _cflags_size='-O3 -mf=2'
4277         _flags_filter=tms470_flags
4278     elif $_cc -v 2>&1 | grep -q clang; then
4279         _type=clang
4280         _ident=$($_cc --version 2>/dev/null | head -n1)
4281         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4282         _cflags_speed='-O3'
4283         _cflags_size='-Oz'
4284     elif $_cc -V 2>&1 | grep -q Sun; then
4285         _type=suncc
4286         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4287         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4288         _DEPFLAGS='-xM1 -xc99'
4289         _ldflags='-std=c99'
4290         _cflags_speed='-O5'
4291         _cflags_size='-O5 -xspace'
4292         _flags_filter=suncc_flags
4293     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4294         _type=pathscale
4295         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4296         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4297         _cflags_speed='-O2'
4298         _cflags_size='-Os'
4299         _flags_filter='filter_out -Wdisabled-optimization'
4300     elif $_cc -v 2>&1 | grep -q Open64; then
4301         _type=open64
4302         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4303         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4304         _cflags_speed='-O2'
4305         _cflags_size='-Os'
4306         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4307     elif $_cc -V 2>&1 | grep -q Portland; then
4308         _type=pgi
4309         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4310         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4311         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4312         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4313         _cflags_noopt="-O"
4314         _flags_filter=pgi_flags
4315     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4316         _type=armasm
4317         _ident=$($_cc | head -n1)
4318         # 4509: "This form of conditional instruction is deprecated"
4319         _flags="-nologo -ignore 4509"
4320         _flags_filter=armasm_flags
4321     elif $_cc 2>&1 | grep -q Intel; then
4322         _type=icl
4323         _ident=$($_cc 2>&1 | head -n1)
4324         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4325         # Not only is O3 broken on 13.x+ but it is slower on all previous
4326         # versions (tested) as well.
4327         _cflags_speed="-O2"
4328         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4329         if $_cc 2>&1 | grep -q Linker; then
4330             _ld_o='-out:$@'
4331         else
4332             _ld_o='-Fe$@'
4333         fi
4334         _cc_o='-Fo$@'
4335         _cc_e='-P'
4336         _flags_filter=icl_flags
4337         _ld_lib='lib%.a'
4338         _ld_path='-libpath:'
4339         # -Qdiag-error to make icl error when seeing certain unknown arguments
4340         _flags='-nologo -Qdiag-error:4044,10157'
4341         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4342         # with MSVC which enables it by default.
4343         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4344         disable stripping
4345     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4346         # lld can emulate multiple different linkers; in ms link.exe mode,
4347         # the -? parameter gives the help output which contains an identifyable
4348         # string, while it gives an error in other modes.
4349         _type=lld-link
4350         # The link.exe mode doesn't have a switch for getting the version,
4351         # but we can force it back to gnu mode and get the version from there.
4352         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4353         _ld_o='-out:$@'
4354         _flags_filter=msvc_flags
4355         _ld_lib='lib%.a'
4356         _ld_path='-libpath:'
4357     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4358         _type=msvc
4359         _ident=$($_cc 2>&1 | head -n1)
4360         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4361         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4362         _cflags_speed="-O2"
4363         _cflags_size="-O1"
4364         _cflags_noopt="-O1"
4365         if $_cc -nologo- 2>&1 | grep -q Linker; then
4366             _ld_o='-out:$@'
4367         else
4368             _ld_o='-Fe$@'
4369         fi
4370         _cc_o='-Fo$@'
4371         _cc_e='-P -Fi$@'
4372         _flags_filter=msvc_flags
4373         _ld_lib='lib%.a'
4374         _ld_path='-libpath:'
4375         _flags='-nologo'
4376         disable stripping
4377     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4378         _type=cparser
4379         _ident=$($_cc --version | head -n1)
4380         _depflags='-MMD'
4381         _cflags_speed='-O4'
4382         _cflags_size='-O2'
4383         _flags_filter=cparser_flags
4384     fi
4385
4386     eval ${pfx}_type=\$_type
4387     eval ${pfx}_ident=\$_ident
4388 }
4389
4390 set_ccvars(){
4391     eval ${1}_C=\${_cc_c-\${${1}_C}}
4392     eval ${1}_E=\${_cc_e-\${${1}_E}}
4393     eval ${1}_O=\${_cc_o-\${${1}_O}}
4394
4395     if [ -n "$_depflags" ]; then
4396         eval ${1}_DEPFLAGS=\$_depflags
4397     else
4398         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4399         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4400         eval DEP${1}FLAGS=\$_flags
4401     fi
4402 }
4403
4404 probe_cc cc "$cc" "true"
4405 cflags_filter=$_flags_filter
4406 cflags_speed=$_cflags_speed
4407 cflags_size=$_cflags_size
4408 cflags_noopt=$_cflags_noopt
4409 add_cflags $_flags $_cflags
4410 cc_ldflags=$_ldflags
4411 set_ccvars CC
4412 set_ccvars CXX
4413
4414 probe_cc hostcc "$host_cc"
4415 host_cflags_filter=$_flags_filter
4416 host_cflags_speed=$_cflags_speed
4417 add_host_cflags  $_flags $_cflags
4418 set_ccvars HOSTCC
4419
4420 test -n "$cc_type" && enable $cc_type ||
4421     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4422
4423 : ${as_default:=$cc}
4424 : ${objcc_default:=$cc}
4425 : ${dep_cc_default:=$cc}
4426 : ${ld_default:=$cc}
4427 : ${host_ld_default:=$host_cc}
4428 set_default ar as objcc dep_cc ld ln_s host_ld windres
4429
4430 probe_cc as "$as"
4431 asflags_filter=$_flags_filter
4432 add_asflags $_flags $_cflags
4433 set_ccvars AS
4434
4435 probe_cc objcc "$objcc"
4436 objcflags_filter=$_flags_filter
4437 add_objcflags $_flags $_cflags
4438 set_ccvars OBJC
4439
4440 probe_cc ld "$ld"
4441 ldflags_filter=$_flags_filter
4442 add_ldflags $_flags $_ldflags
4443 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4444 LD_O=${_ld_o-$LD_O}
4445 LD_LIB=${_ld_lib-$LD_LIB}
4446 LD_PATH=${_ld_path-$LD_PATH}
4447
4448 probe_cc hostld "$host_ld"
4449 host_ldflags_filter=$_flags_filter
4450 add_host_ldflags $_flags $_ldflags
4451 HOSTLD_O=${_ld_o-$HOSTLD_O}
4452
4453 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4454     probe_cc depcc "$dep_cc"
4455     CCDEP=${_DEPCMD:-$DEPCMD}
4456     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4457     DEPCCFLAGS=$_flags
4458 fi
4459
4460 if $ar 2>&1 | grep -q Microsoft; then
4461     arflags="-nologo"
4462     ar_o='-out:$@'
4463 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4464     arflags="rq"
4465     ar_o='$@'
4466 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4467     arflags='-Xany -r -c'
4468     ar_o='$@'
4469 elif $ar 2>&1 | grep -q "\[D\] "; then
4470     arflags="rcD"
4471     ar_o='$@'
4472 else
4473     arflags="rc"
4474     ar_o='$@'
4475 fi
4476
4477 add_cflags $extra_cflags
4478 add_cxxflags $extra_cxxflags
4479 add_objcflags $extra_objcflags
4480 add_asflags $extra_cflags
4481
4482 if test -n "$sysroot"; then
4483     case "$cc_type" in
4484         gcc|llvm_gcc|clang)
4485             add_cppflags --sysroot="$sysroot"
4486             add_ldflags --sysroot="$sysroot"
4487 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4488             add_cppflags -isysroot "$sysroot"
4489             add_ldflags -isysroot "$sysroot"
4490         ;;
4491         tms470)
4492             add_cppflags -I"$sysinclude"
4493             add_ldflags  --sysroot="$sysroot"
4494         ;;
4495     esac
4496 fi
4497
4498 if test "$cpu" = host; then
4499     enabled cross_compile &&
4500         die "--cpu=host makes no sense when cross-compiling."
4501
4502     case "$cc_type" in
4503         gcc|llvm_gcc)
4504             check_native(){
4505                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4506                 sed -n "/cc1.*$1=/{
4507                             s/.*$1=\\([^ ]*\\).*/\\1/
4508                             p
4509                             q
4510                         }" $TMPE
4511             }
4512             cpu=$(check_native -march || check_native -mcpu)
4513         ;;
4514         clang)
4515             check_native(){
4516                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4517                 sed -n "/cc1.*-target-cpu /{
4518                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4519                             p
4520                             q
4521                         }" $TMPE
4522             }
4523             cpu=$(check_native -march)
4524         ;;
4525     esac
4526
4527     test "${cpu:-host}" = host &&
4528         die "--cpu=host not supported with compiler $cc"
4529 fi
4530
4531 # Deal with common $arch aliases
4532 case "$arch" in
4533     aarch64|arm64)
4534         arch="aarch64"
4535     ;;
4536     arm*|iPad*|iPhone*)
4537         arch="arm"
4538     ;;
4539     mips*|IP*)
4540         case "$arch" in
4541         *el)
4542             add_cppflags -EL
4543             add_ldflags -EL
4544         ;;
4545         *eb)
4546             add_cppflags -EB
4547             add_ldflags -EB
4548         ;;
4549         esac
4550         arch="mips"
4551     ;;
4552     parisc*|hppa*)
4553         arch="parisc"
4554     ;;
4555     "Power Macintosh"|ppc*|powerpc*)
4556         arch="ppc"
4557     ;;
4558     s390|s390x)
4559         arch="s390"
4560     ;;
4561     sh4|sh)
4562         arch="sh4"
4563     ;;
4564     sun4*|sparc*)
4565         arch="sparc"
4566     ;;
4567     tilegx|tile-gx)
4568         arch="tilegx"
4569     ;;
4570     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4571         arch="x86"
4572     ;;
4573 esac
4574
4575 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4576 enable $arch
4577
4578 # Add processor-specific flags
4579 if enabled aarch64; then
4580
4581     case $cpu in
4582         armv*)
4583             cpuflags="-march=$cpu"
4584         ;;
4585         *)
4586             cpuflags="-mcpu=$cpu"
4587         ;;
4588     esac
4589
4590 elif enabled alpha; then
4591
4592     cpuflags="-mcpu=$cpu"
4593
4594 elif enabled arm; then
4595
4596     check_arm_arch() {
4597         check_cpp_condition stddef.h \
4598             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4599             $cpuflags
4600     }
4601
4602     probe_arm_arch() {
4603         if   check_arm_arch 4;        then echo armv4
4604         elif check_arm_arch 4T;       then echo armv4t
4605         elif check_arm_arch 5;        then echo armv5
4606         elif check_arm_arch 5E;       then echo armv5e
4607         elif check_arm_arch 5T;       then echo armv5t
4608         elif check_arm_arch 5TE;      then echo armv5te
4609         elif check_arm_arch 5TEJ;     then echo armv5te
4610         elif check_arm_arch 6;        then echo armv6
4611         elif check_arm_arch 6J;       then echo armv6j
4612         elif check_arm_arch 6K;       then echo armv6k
4613         elif check_arm_arch 6Z;       then echo armv6z
4614         elif check_arm_arch 6ZK;      then echo armv6zk
4615         elif check_arm_arch 6T2;      then echo armv6t2
4616         elif check_arm_arch 7;        then echo armv7
4617         elif check_arm_arch 7A  7_A;  then echo armv7-a
4618         elif check_arm_arch 7S;       then echo armv7-a
4619         elif check_arm_arch 7R  7_R;  then echo armv7-r
4620         elif check_arm_arch 7M  7_M;  then echo armv7-m
4621         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4622         elif check_arm_arch 8A  8_A;  then echo armv8-a
4623         fi
4624     }
4625
4626     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4627
4628     case $cpu in
4629         armv*)
4630             cpuflags="-march=$cpu"
4631             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4632         ;;
4633         *)
4634             cpuflags="-mcpu=$cpu"
4635             case $cpu in
4636                 cortex-a*)                               subarch=armv7a  ;;
4637                 cortex-r*)                               subarch=armv7r  ;;
4638                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4639                 arm11*)                                  subarch=armv6   ;;
4640                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4641                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4642                 *)                             subarch=$(probe_arm_arch) ;;
4643             esac
4644         ;;
4645     esac
4646
4647     case "$subarch" in
4648         armv5t*)    enable fast_clz                ;;
4649         armv[6-8]*)
4650             enable fast_clz
4651             disabled fast_unaligned || enable fast_unaligned
4652             ;;
4653     esac
4654
4655 elif enabled avr32; then
4656
4657     case $cpu in
4658         ap7[02]0[0-2])
4659             subarch="avr32_ap"
4660             cpuflags="-mpart=$cpu"
4661         ;;
4662         ap)
4663             subarch="avr32_ap"
4664             cpuflags="-march=$cpu"
4665         ;;
4666         uc3[ab]*)
4667             subarch="avr32_uc"
4668             cpuflags="-mcpu=$cpu"
4669         ;;
4670         uc)
4671             subarch="avr32_uc"
4672             cpuflags="-march=$cpu"
4673         ;;
4674     esac
4675
4676 elif enabled bfin; then
4677
4678     cpuflags="-mcpu=$cpu"
4679
4680 elif enabled mips; then
4681
4682     cpuflags="-march=$cpu"
4683
4684     if [ "$cpu" != "generic" ]; then
4685         disable mips32r2
4686         disable mips32r5
4687         disable mips64r2
4688         disable mips32r6
4689         disable mips64r6
4690         disable loongson2
4691         disable loongson3
4692
4693         case $cpu in
4694             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4695                 enable mips32r2
4696                 disable msa
4697             ;;
4698             p5600|i6400|p6600)
4699                 disable mipsdsp
4700                 disable mipsdspr2
4701             ;;
4702             loongson*)
4703                 enable loongson2
4704                 enable loongson3
4705                 enable local_aligned_8 local_aligned_16 local_aligned_32
4706                 enable simd_align_16
4707                 enable fast_64bit
4708                 enable fast_clz
4709                 enable fast_cmov
4710                 enable fast_unaligned
4711                 disable aligned_stack
4712                 disable mipsfpu
4713                 disable mipsdsp
4714                 disable mipsdspr2
4715                 case $cpu in
4716                     loongson3*)
4717                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4718                     ;;
4719                     loongson2e)
4720                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4721                     ;;
4722                     loongson2f)
4723                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4724                     ;;
4725                 esac
4726             ;;
4727             *)
4728                 # Unknown CPU. Disable everything.
4729                 warn "unknown CPU. Disabling all MIPS optimizations."
4730                 disable mipsfpu
4731                 disable mipsdsp
4732                 disable mipsdspr2
4733                 disable msa
4734                 disable mmi
4735             ;;
4736         esac
4737
4738         case $cpu in
4739             24kc)
4740                 disable mipsfpu
4741                 disable mipsdsp
4742                 disable mipsdspr2
4743             ;;
4744             24kf*)
4745                 disable mipsdsp
4746                 disable mipsdspr2
4747             ;;
4748             24kec|34kc|1004kc)
4749                 disable mipsfpu
4750                 disable mipsdspr2
4751             ;;
4752             24kef*|34kf*|1004kf*)
4753                 disable mipsdspr2
4754             ;;
4755             74kc)
4756                 disable mipsfpu
4757             ;;
4758             p5600)
4759                 enable mips32r5
4760                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4761             ;;
4762             i6400)
4763                 enable mips64r6
4764                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4765             ;;
4766             p6600)
4767                 enable mips64r6
4768                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4769             ;;
4770         esac
4771     else
4772         # We do not disable anything. Is up to the user to disable the unwanted features.
4773         warn 'generic cpu selected'
4774     fi
4775
4776 elif enabled ppc; then
4777
4778     disable ldbrx
4779
4780     case $(tolower $cpu) in
4781         601|ppc601|powerpc601)
4782             cpuflags="-mcpu=601"
4783             disable altivec
4784         ;;
4785         603*|ppc603*|powerpc603*)
4786             cpuflags="-mcpu=603"
4787             disable altivec
4788         ;;
4789         604*|ppc604*|powerpc604*)
4790             cpuflags="-mcpu=604"
4791             disable altivec
4792         ;;
4793         g3|75*|ppc75*|powerpc75*)
4794             cpuflags="-mcpu=750"
4795             disable altivec
4796         ;;
4797         g4|745*|ppc745*|powerpc745*)
4798             cpuflags="-mcpu=7450"
4799             disable vsx
4800         ;;
4801         74*|ppc74*|powerpc74*)
4802             cpuflags="-mcpu=7400"
4803             disable vsx
4804         ;;
4805         g5|970|ppc970|powerpc970)
4806             cpuflags="-mcpu=970"
4807             disable vsx
4808         ;;
4809         power[3-6]*)
4810             cpuflags="-mcpu=$cpu"
4811             disable vsx
4812         ;;
4813         power[7-8]*)
4814             cpuflags="-mcpu=$cpu"
4815         ;;
4816         cell)
4817             cpuflags="-mcpu=cell"
4818             enable ldbrx
4819             disable vsx
4820         ;;
4821         e500mc)
4822             cpuflags="-mcpu=e500mc"
4823             disable altivec
4824         ;;
4825         e500v2)
4826             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4827             disable altivec
4828             disable dcbzl
4829         ;;
4830         e500)
4831             cpuflags="-mcpu=8540 -mhard-float"
4832             disable altivec
4833             disable dcbzl
4834         ;;
4835     esac
4836
4837 elif enabled sparc; then
4838
4839     case $cpu in
4840         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4841             cpuflags="-mcpu=$cpu"
4842         ;;
4843         ultrasparc*|niagara[234])
4844             cpuflags="-mcpu=$cpu"
4845         ;;
4846     esac
4847
4848 elif enabled x86; then
4849
4850     case $cpu in
4851         i[345]86|pentium)
4852             cpuflags="-march=$cpu"
4853             disable i686
4854             disable mmx
4855         ;;
4856         # targets that do NOT support nopl and conditional mov (cmov)
4857         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4858             cpuflags="-march=$cpu"
4859             disable i686
4860         ;;
4861         # targets that do support nopl and conditional mov (cmov)
4862         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4863         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4864         |amdfam10|barcelona|b[dt]ver*|znver*)
4865             cpuflags="-march=$cpu"
4866             enable i686
4867             enable fast_cmov
4868         ;;
4869         # targets that do support conditional mov but on which it's slow
4870         pentium4|pentium4m|prescott|nocona)
4871             cpuflags="-march=$cpu"
4872             enable i686
4873             disable fast_cmov
4874         ;;
4875     esac
4876
4877 fi
4878
4879 if [ "$cpu" != generic ]; then
4880     add_cflags  $cpuflags
4881     add_asflags $cpuflags
4882     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4883 fi
4884
4885 # compiler sanity check
4886 check_exec <<EOF
4887 int main(void){ return 0; }
4888 EOF
4889 if test "$?" != 0; then
4890     echo "$cc is unable to create an executable file."
4891     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4892         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4893         echo "Only do this if you know what cross compiling means."
4894     fi
4895     die "C compiler test failed."
4896 fi
4897
4898 add_cppflags -D_ISOC99_SOURCE
4899 add_cxxflags -D__STDC_CONSTANT_MACROS
4900 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4901
4902 # some compilers silently accept -std=c11, so we also need to check that the
4903 # version macro is defined properly
4904 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4905     add_cflags -std=c11 ||
4906     check_cflags -std=c99
4907
4908 check_cppflags -D_FILE_OFFSET_BITS=64
4909 check_cppflags -D_LARGEFILE_SOURCE
4910
4911 add_host_cppflags -D_ISOC99_SOURCE
4912 check_host_cflags -std=c99
4913 check_host_cflags -Wall
4914 check_host_cflags $host_cflags_speed
4915
4916 check_64bit(){
4917     arch32=$1
4918     arch64=$2
4919     expr=$3
4920     check_code cc "" "int test[2*($expr) - 1]" &&
4921         subarch=$arch64 || subarch=$arch32
4922 }
4923
4924 case "$arch" in
4925     aarch64|alpha|ia64)
4926         spic=$shared
4927     ;;
4928     mips)
4929         check_64bit mips mips64 '_MIPS_SIM > 1'
4930         spic=$shared
4931     ;;
4932     parisc)
4933         check_64bit parisc parisc64 'sizeof(void *) > 4'
4934         spic=$shared
4935     ;;
4936     ppc)
4937         check_64bit ppc ppc64 'sizeof(void *) > 4'
4938         spic=$shared
4939     ;;
4940     s390)
4941         check_64bit s390 s390x 'sizeof(void *) > 4'
4942         spic=$shared
4943     ;;
4944     sparc)
4945         check_64bit sparc sparc64 'sizeof(void *) > 4'
4946         spic=$shared
4947     ;;
4948     x86)
4949         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4950         # Treat x32 as x64 for now. Note it also needs spic=$shared
4951         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4952             subarch=x86_64
4953         if test "$subarch" = "x86_64"; then
4954             spic=$shared
4955         fi
4956     ;;
4957     ppc)
4958         check_cc <<EOF && subarch="ppc64"
4959         int test[(int)sizeof(char*) - 7];
4960 EOF
4961     ;;
4962 esac
4963
4964 enable $subarch
4965 enabled spic && enable_weak pic
4966
4967 enabled x86_64 && objformat=elf64 || objformat="elf32"
4968
4969 # OS specific
4970 case $target_os in
4971     aix)
4972         SHFLAGS=-shared
4973         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4974         enabled shared && add_ldflags -Wl,-brtl
4975         ;;
4976     android)
4977         disable symver
4978         enable section_data_rel_ro
4979         SLIB_INSTALL_NAME='$(SLIBNAME)'
4980         SLIB_INSTALL_LINKS=
4981         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4982         ;;
4983     haiku)
4984         prefix_default="/boot/common"
4985         network_extralibs="-lnetwork"
4986         host_extralibs=
4987         ;;
4988     sunos)
4989         SHFLAGS='-shared -Wl,-h,$$(@F)'
4990         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4991         network_extralibs="-lsocket -lnsl"
4992         add_cppflags -D__EXTENSIONS__
4993         # When using suncc to build, the Solaris linker will mark
4994         # an executable with each instruction set encountered by
4995         # the Solaris assembler.  As our libraries contain their own
4996         # guards for processor-specific code, instead suppress
4997         # generation of the HWCAPS ELF section on Solaris x86 only.
4998         enabled_all suncc x86 &&
4999             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5000             add_ldflags -Wl,-M,mapfile
5001         nm_default='nm -P -g'
5002         version_script='-M'
5003         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5004         ;;
5005     netbsd)
5006         disable symver
5007         oss_indev_extralibs="-lossaudio"
5008         oss_outdev_extralibs="-lossaudio"
5009         enabled gcc || check_ldflags -Wl,-zmuldefs
5010         ;;
5011     openbsd|bitrig)
5012         disable symver
5013         SHFLAGS='-shared'
5014         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5015         SLIB_INSTALL_LINKS=
5016         oss_indev_extralibs="-lossaudio"
5017         oss_outdev_extralibs="-lossaudio"
5018         ;;
5019     dragonfly)
5020         disable symver
5021         ;;
5022     freebsd)
5023         ;;
5024     bsd/os)
5025         add_extralibs -lpoll -lgnugetopt
5026         strip="strip -d"
5027         ;;
5028     darwin)
5029         enabled ppc && add_asflags -force_cpusubtype_ALL
5030         install_name_dir_default='$(SHLIBDIR)'
5031         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5032         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5033         strip="${strip} -x"
5034         add_ldflags -Wl,-dynamic,-search_paths_first
5035         check_ldflags -Wl,-no_weak_imports
5036         SLIBSUF=".dylib"
5037         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5038         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5039         enabled x86_64 && objformat="macho64" || objformat="macho32"
5040         enabled_any pic shared x86_64 ||
5041             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5042         check_header dispatch/dispatch.h &&
5043             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5044         version_script='-exported_symbols_list'
5045         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5046         ;;
5047     msys*)
5048         die "Native MSYS builds are discouraged, please use the MINGW environment."
5049         ;;
5050     mingw32*|mingw64*)
5051         if test $target_os = "mingw32ce"; then
5052             disable network
5053         else
5054             target_os=mingw32
5055         fi
5056         LIBTARGET=i386
5057         if enabled x86_64; then
5058             LIBTARGET="i386:x86-64"
5059         elif enabled arm; then
5060             LIBTARGET=arm-wince
5061         fi
5062         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5063         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5064         shlibdir_default="$bindir_default"
5065         SLIBPREF=""
5066         SLIBSUF=".dll"
5067         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5068         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5069         dlltool="${cross_prefix}dlltool"
5070         if check_cmd lib.exe -list; then
5071             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5072             if enabled x86_64; then
5073                 LIBTARGET=x64
5074             fi
5075         elif check_cmd $dlltool --version; then
5076             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5077         fi
5078         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5079         SLIB_INSTALL_LINKS=
5080         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5081         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5082         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
5083         enabled x86_64 && objformat="win64" || objformat="win32"
5084         ranlib=:
5085         enable dos_paths
5086         check_ldflags -Wl,--nxcompat,--dynamicbase
5087         # Lets work around some stupidity in binutils.
5088         # ld will strip relocations from executables even though we need them
5089         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5090         # however ld then forgets what the entry point should be (oops) so we
5091         # have to manually (re)set it.
5092         if enabled x86_32; then
5093             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5094         elif enabled x86_64; then
5095             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5096             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5097             # Set image base >4GB for extra entropy with HEASLR
5098             add_ldexeflags -Wl,--image-base,0x140000000
5099             append SHFLAGS -Wl,--image-base,0x180000000
5100         fi
5101         ;;
5102     win32|win64)
5103         disable symver
5104         if enabled shared; then
5105             # Link to the import library instead of the normal static library
5106             # for shared libs.
5107             LD_LIB='%.lib'
5108             # Cannot build both shared and static libs with MSVC or icl.
5109             disable static
5110         fi
5111         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5112         shlibdir_default="$bindir_default"
5113         SLIBPREF=""
5114         SLIBSUF=".dll"
5115         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5116         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5117         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5118         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5119         SLIB_INSTALL_LINKS=
5120         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5121         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5122         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5123         enabled x86_64 && objformat="win64" || objformat="win32"
5124         ranlib=:
5125         enable dos_paths
5126         ;;
5127     cygwin*)
5128         target_os=cygwin
5129         shlibdir_default="$bindir_default"
5130         SLIBPREF="cyg"
5131         SLIBSUF=".dll"
5132         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5133         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5134         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5135         SLIB_INSTALL_LINKS=
5136         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5137         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5138         enabled x86_64 && objformat="win64" || objformat="win32"
5139         enable dos_paths
5140         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5141         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5142         ;;
5143     *-dos|freedos|opendos)
5144         network_extralibs="-lsocket"
5145         objformat="coff"
5146         enable dos_paths
5147         add_cppflags -U__STRICT_ANSI__
5148         ;;
5149     linux)
5150         enable section_data_rel_ro
5151         enabled_any arm aarch64 && enable_weak linux_perf
5152         ;;
5153     irix*)
5154         target_os=irix
5155         ranlib="echo ignoring ranlib"
5156         ;;
5157     os/2*)
5158         strip="lxlite -CS"
5159         striptype=""
5160         objformat="aout"
5161         add_cppflags -D_GNU_SOURCE
5162         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5163         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5164         LIBSUF="_s.a"
5165         SLIBPREF=""
5166         SLIBSUF=".dll"
5167         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5168         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5169         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5170             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5171             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5172             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5173             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5174         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5175             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5176         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5177         SLIB_INSTALL_LINKS=
5178         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5179         enable dos_paths
5180         enable_weak os2threads
5181         ;;
5182     gnu/kfreebsd)
5183         add_cppflags -D_BSD_SOURCE
5184         ;;
5185     gnu)
5186         ;;
5187     qnx)
5188         add_cppflags -D_QNX_SOURCE
5189         network_extralibs="-lsocket"
5190         ;;
5191     symbian)
5192         SLIBSUF=".dll"
5193         enable dos_paths
5194         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5195         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5196         add_ldflags -Wl,--target1-abs,--no-undefined \
5197                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5198                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5199         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5200                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5201                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5202         ;;
5203     osf1)
5204         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5205         ;;
5206     minix)
5207         ;;
5208     none)
5209         ;;
5210     *)
5211         die "Unknown OS '$target_os'."
5212         ;;
5213 esac
5214
5215 # test if creating links works
5216 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5217 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5218 mkdir "$link_dest"
5219 $ln_s "$link_dest" "$link_name"
5220 touch "$link_dest/test_file"
5221 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5222     # create link to source path
5223     [ -e src ] && rm src
5224     $ln_s "$source_path" src
5225     source_link=src
5226 else
5227     # creating directory links doesn't work
5228     # fall back to using the full source path
5229     source_link="$source_path"
5230 fi
5231 # cleanup
5232 rm -r "$link_dest"
5233 rm -r "$link_name"
5234
5235 # determine libc flavour
5236
5237 probe_libc(){
5238     pfx=$1
5239     pfx_no_=${pfx%_}
5240     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5241     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5242         eval ${pfx}libc_type=uclibc
5243         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5244     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5245         eval ${pfx}libc_type=glibc
5246         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5247     # MinGW headers can be installed on Cygwin, so check for newlib first.
5248     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5249         eval ${pfx}libc_type=newlib
5250         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5251     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5252     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5253         eval ${pfx}libc_type=mingw64
5254         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5255             add_compat msvcrt/snprintf.o
5256             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5257         fi
5258         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5259         eval test \$${pfx_no_}cc_type = "gcc" &&
5260             add_${pfx}cppflags -D__printf__=__gnu_printf__
5261     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5262          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5263         eval ${pfx}libc_type=mingw32
5264         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5265             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5266             die "ERROR: MinGW32 runtime version must be >= 3.15."
5267         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5268         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5269             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5270         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5271             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5272         eval test \$${pfx_no_}cc_type = "gcc" &&
5273             add_${pfx}cppflags -D__printf__=__gnu_printf__
5274     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5275         eval ${pfx}libc_type=msvcrt
5276         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5277             if [ "$pfx" = host_ ]; then
5278                 add_host_cppflags -Dsnprintf=_snprintf
5279             else
5280                 add_compat strtod.o strtod=avpriv_strtod
5281                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5282                                              _snprintf=avpriv_snprintf  \
5283                                              vsnprintf=avpriv_vsnprintf
5284             fi
5285         fi
5286         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5287         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5288         # 0x601 by default unless something else is set by the user.
5289         # This can easily lead to us detecting functions only present
5290         # in such new versions and producing binaries requiring windows 7.0.
5291         # Therefore explicitly set the default to XP unless the user has
5292         # set something else on the command line.
5293         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5294         # family. For these cases, configure is free to use any functions
5295         # found in the SDK headers by default. (Alternatively, we could force
5296         # _WIN32_WINNT to 0x0602 in that case.)
5297         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5298             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5299 #ifdef WINAPI_FAMILY
5300 #include <winapifamily.h>
5301 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5302 #error not desktop
5303 #endif
5304 #endif
5305 EOF
5306         if [ "$pfx" = "" ]; then
5307             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5308             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5309         fi
5310     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5311         eval ${pfx}libc_type=klibc
5312     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5313         eval ${pfx}libc_type=bionic
5314     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5315         eval ${pfx}libc_type=solaris
5316         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5317     fi
5318     check_${pfx}cc <<EOF
5319 #include <time.h>
5320 void *v = localtime_r;
5321 EOF
5322 test "$?" != 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
5323 #include <time.h>
5324 void *v = localtime_r;
5325 EOF
5326
5327 }
5328
5329 probe_libc
5330 test -n "$libc_type" && enable libc_$libc_type
5331 probe_libc host_
5332 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5333
5334 # hacks for compiler/libc/os combinations
5335
5336 case $libc_type in
5337     bionic)
5338         add_compat strtod.o strtod=avpriv_strtod
5339         ;;
5340     glibc)
5341         if enabled tms470; then
5342             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5343             add_cppflags -D__USER_LABEL_PREFIX__=
5344             add_cppflags -D__builtin_memset=memset
5345             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5346             add_cflags   -pds=48    # incompatible redefinition of macro
5347         elif enabled ccc; then
5348             add_ldflags -Wl,-z,now  # calls to libots crash without this
5349         fi
5350         ;;
5351 esac
5352
5353 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5354     add_cppflags '-I\$(SRC_PATH)/compat/float'
5355
5356 esc(){
5357     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5358 }
5359
5360 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5361
5362 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5363
5364 set_default libdir
5365 : ${shlibdir_default:="$libdir"}
5366 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5367
5368 set_default $PATHS_LIST
5369 set_default nm
5370
5371 # we need to build at least one lib type
5372 if ! enabled_any static shared; then
5373     cat <<EOF
5374 At least one library type must be built.
5375 Specify --enable-static to build the static libraries or --enable-shared to
5376 build the shared libraries as well. To only build the shared libraries specify
5377 --disable-static in addition to --enable-shared.
5378 EOF
5379     exit 1
5380 fi
5381
5382 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5383
5384 enable_weak_pic() {
5385     disabled pic && return
5386     enable pic
5387     add_cppflags -DPIC
5388     case "$target_os" in
5389     mingw*|cygwin*)
5390         ;;
5391     *)
5392         add_cflags -fPIC
5393         ;;
5394     esac
5395     add_asflags  -fPIC
5396 }
5397
5398 enabled pic && enable_weak_pic
5399
5400 check_cc <<EOF || die "Symbol mangling check failed."
5401 int ff_extern;
5402 EOF
5403 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5404 extern_prefix=${sym%%ff_extern*}
5405
5406 check_inline_asm inline_asm '"" ::'
5407
5408 _restrict=
5409 for restrict_keyword in restrict __restrict__ __restrict; do
5410     check_cc <<EOF && _restrict=$restrict_keyword && break
5411 void foo(char * $restrict_keyword p);
5412 EOF
5413 done
5414
5415 check_cc <<EOF && enable pragma_deprecated
5416 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5417 EOF
5418
5419 check_cc <<EOF && enable attribute_packed
5420 struct { int x; } __attribute__((packed)) x;
5421 EOF
5422
5423 check_cc <<EOF && enable attribute_may_alias
5424 union { int x; } __attribute__((may_alias)) x;
5425 EOF
5426
5427 check_cc <<EOF || die "endian test failed"
5428 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5429 EOF
5430 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5431
5432 check_cc <<EOF && enable const_nan
5433 #include <math.h>
5434 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5435 EOF
5436
5437 if ! enabled ppc64 || enabled bigendian; then
5438     disable vsx
5439 fi
5440
5441 check_gas() {
5442     log "check_gas using '$as' as AS"
5443     # :vararg is used on aarch64, arm and ppc altivec
5444     check_as <<EOF || return 1
5445 .macro m n, y:vararg=0
5446 \n: .int \y
5447 .endm
5448 m x
5449 EOF
5450     # .altmacro is only used in arm asm
5451     ! enabled arm || check_as <<EOF || return 1
5452 .altmacro
5453 EOF
5454     enable gnu_as
5455     return 0
5456 }
5457
5458 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5459     nogas=:
5460     enabled_any arm aarch64 && nogas=die
5461     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5462     as_noop=-v
5463
5464     case $as_type in
5465         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5466         gcc)  gaspp_as_type=gas ;;
5467         *)    gaspp_as_type=$as_type ;;
5468     esac
5469
5470     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5471
5472     test "${as#*gas-preprocessor.pl}" != "$as" ||
5473     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5474         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5475
5476     if ! check_gas ; then
5477         as=${gas:=$as}
5478         check_gas || \
5479             $nogas "GNU assembler not found, install/update gas-preprocessor"
5480     fi
5481
5482     check_as <<EOF && enable as_func
5483 .func test
5484 .endfunc
5485 EOF
5486 fi
5487
5488 check_inline_asm inline_asm_labels '"1:\n"'
5489
5490 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5491
5492 if enabled aarch64; then
5493     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5494     # internal assembler in clang 3.3 does not support this instruction
5495     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5496     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5497
5498     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5499
5500 elif enabled alpha; then
5501
5502     check_cflags -mieee
5503
5504 elif enabled arm; then
5505
5506     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5507
5508     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5509 float func(float a, float b){ return a+b; }
5510 EOF
5511
5512     enabled thumb && check_cflags -mthumb || check_cflags -marm
5513
5514     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5515         enable vfp_args
5516     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5517         enable vfp_args
5518     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5519         case "${cross_prefix:-$cc}" in
5520             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5521             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5522 __asm__ (".eabi_attribute 28, 1");
5523 int main(void) { return 0; }
5524 EOF
5525         esac
5526         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5527     fi
5528
5529     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5530     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5531     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5532     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5533     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5534     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5535     enabled setend  && check_insn setend  'setend be'
5536
5537     [ $target_os = linux ] || [ $target_os = android ] ||
5538         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5539             $ARCH_EXT_LIST_ARM
5540
5541     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5542
5543     check_as <<EOF && enable as_dn_directive
5544 ra .dn d0.i16
5545 .unreq ra
5546 EOF
5547     check_as <<EOF && enable as_fpu_directive
5548 .fpu neon
5549 EOF
5550
5551     # llvm's integrated assembler supports .object_arch from llvm 3.5
5552     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5553         check_as <<EOF && enable as_object_arch
5554 .object_arch armv4
5555 EOF
5556
5557     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5558
5559 elif enabled mips; then
5560
5561     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5562     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5563     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5564
5565     # Enable minimum ISA based on selected options
5566     if enabled mips64; then
5567         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5568         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5569         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5570     else
5571         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5572         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5573         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5574         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5575     fi
5576
5577     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5578     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5579     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5580     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5581     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5582
5583     if enabled bigendian && enabled msa; then
5584         disable msa
5585     fi
5586
5587 elif enabled parisc; then
5588
5589     if enabled gcc; then
5590         case $($cc -dumpversion) in
5591             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5592         esac
5593     fi
5594
5595 elif enabled ppc; then
5596
5597     enable local_aligned_8 local_aligned_16 local_aligned_32
5598
5599     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5600     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5601     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5602     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5603
5604     # AltiVec flags: The FSF version of GCC differs from the Apple version
5605     if enabled altivec; then
5606         check_cflags -maltivec -mabi=altivec &&
5607         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5608         check_cflags -faltivec
5609
5610         # check if our compiler supports Motorola AltiVec C API
5611         check_cc <<EOF || disable altivec
5612 $inc_altivec_h
5613 int main(void) {
5614     vector signed int v1 = (vector signed int) { 0 };
5615     vector signed int v2 = (vector signed int) { 1 };
5616     v1 = vec_add(v1, v2);
5617     return 0;
5618 }
5619 EOF
5620
5621         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5622     fi
5623
5624     if enabled vsx; then
5625         check_cflags -mvsx &&
5626         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5627     fi
5628
5629     if enabled power8; then
5630         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5631     fi
5632
5633 elif enabled x86; then
5634
5635     check_builtin rdtsc    intrin.h   "__rdtsc()"
5636     check_builtin mm_empty mmintrin.h "_mm_empty()"
5637
5638     enable local_aligned_8 local_aligned_16 local_aligned_32
5639
5640     # check whether EBP is available on x86
5641     # As 'i' is stored on the stack, this program will crash
5642     # if the base pointer is used to access it because the
5643     # base pointer is cleared in the inline assembly code.
5644     check_exec_crash <<EOF && enable ebp_available
5645 volatile int i=0;
5646 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5647 return i;
5648 EOF
5649
5650     # check whether EBX is available on x86
5651     check_inline_asm ebx_available '""::"b"(0)' &&
5652         check_inline_asm ebx_available '"":::"%ebx"'
5653
5654     # check whether xmm clobbers are supported
5655     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5656
5657     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5658         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5659
5660     # check whether binutils is new enough to compile SSSE3/MMXEXT
5661     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5662     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5663
5664     probe_x86asm(){
5665         x86asmexe_probe=$1
5666         if check_cmd $x86asmexe_probe -v; then
5667             x86asmexe=$x86asmexe_probe
5668             x86asm_type=nasm
5669             x86asm_debug="-g -F dwarf"
5670         elif check_cmd $x86asmexe_probe --version; then
5671             x86asmexe=$x86asmexe_probe
5672             x86asm_type=yasm
5673             x86asm_debug="-g dwarf2"
5674         fi
5675         check_x86asm "movbe ecx, [5]" && enable x86asm
5676     }
5677
5678     if ! disabled_any asm mmx x86asm; then
5679         disable x86asm
5680         for program in $x86asmexe nasm yasm; do
5681             probe_x86asm $program && break
5682         done
5683         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5684         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5685         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5686         X86ASMFLAGS="-f $objformat"
5687         enabled pic               && append X86ASMFLAGS "-DPIC"
5688         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5689         case "$objformat" in
5690             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5691         esac
5692
5693         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5694         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5695         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5696         check_x86asm "CPU amdnop" || disable cpunop
5697     fi
5698
5699     case "$cpu" in
5700         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5701             disable fast_clz
5702         ;;
5703     esac
5704
5705 fi
5706
5707 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5708
5709 check_ldflags -Wl,--as-needed
5710 check_ldflags -Wl,-z,noexecstack
5711
5712 if ! disabled network; then
5713     check_func getaddrinfo $network_extralibs
5714     check_func inet_aton $network_extralibs
5715
5716     check_type netdb.h "struct addrinfo"
5717     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5718     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5719     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5720     check_type poll.h "struct pollfd"
5721     check_type netinet/sctp.h "struct sctp_event_subscribe"
5722     check_struct "sys/socket.h" "struct msghdr" msg_flags
5723     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5724     check_type netinet/in.h "struct sockaddr_in6"
5725     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5726     check_type "sys/types.h sys/socket.h" socklen_t
5727
5728     # Prefer arpa/inet.h over winsock2
5729     if check_header arpa/inet.h ; then
5730         check_func closesocket
5731     elif check_header winsock2.h ; then
5732         check_func_headers winsock2.h closesocket -lws2 &&
5733             network_extralibs="-lws2" ||
5734         { check_func_headers winsock2.h closesocket -lws2_32 &&
5735             network_extralibs="-lws2_32"; } || disable winsock2_h network
5736         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5737
5738         check_type ws2tcpip.h socklen_t
5739         check_type ws2tcpip.h "struct addrinfo"
5740         check_type ws2tcpip.h "struct group_source_req"
5741         check_type ws2tcpip.h "struct ip_mreq_source"
5742         check_type ws2tcpip.h "struct ipv6_mreq"
5743         check_type winsock2.h "struct pollfd"
5744         check_struct winsock2.h "struct sockaddr" sa_len
5745         check_type ws2tcpip.h "struct sockaddr_in6"
5746         check_type ws2tcpip.h "struct sockaddr_storage"
5747     else
5748         disable network
5749     fi
5750 fi
5751
5752 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5753 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5754 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5755 check_builtin sarestart signal.h "SA_RESTART"
5756 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5757 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5758 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5759 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5760
5761 case "$custom_allocator" in
5762     jemalloc)
5763         # jemalloc by default does not use a prefix
5764         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5765     ;;
5766     tcmalloc)
5767         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5768         malloc_prefix=tc_
5769     ;;
5770 esac
5771
5772 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5773 check_func  ${malloc_prefix}memalign            && enable memalign
5774 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5775
5776 check_func  access
5777 check_func_headers stdlib.h arc4random
5778 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5779 check_func  fcntl
5780 check_func  fork
5781 check_func  gethrtime
5782 check_func  getopt
5783 check_func  getrusage
5784 check_func  gettimeofday
5785 check_func  isatty
5786 check_func  mach_absolute_time
5787 check_func  mkstemp
5788 check_func  mmap
5789 check_func  mprotect
5790 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5791 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5792 check_func  sched_getaffinity
5793 check_func  setrlimit
5794 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5795 check_func  strerror_r
5796 check_func  sysconf
5797 check_func  sysctl
5798 check_func  usleep
5799
5800 check_func_headers conio.h kbhit
5801 check_func_headers io.h setmode
5802 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5803 check_func_headers stdlib.h getenv
5804 check_func_headers sys/stat.h lstat
5805
5806 check_func_headers windows.h GetProcessAffinityMask
5807 check_func_headers windows.h GetProcessTimes
5808 check_func_headers windows.h GetSystemTimeAsFileTime
5809 check_func_headers windows.h LoadLibrary
5810 check_func_headers windows.h MapViewOfFile
5811 check_func_headers windows.h PeekNamedPipe
5812 check_func_headers windows.h SetConsoleTextAttribute
5813 check_func_headers windows.h SetConsoleCtrlHandler
5814 check_func_headers windows.h Sleep
5815 check_func_headers windows.h VirtualAlloc
5816 check_struct windows.h "CONDITION_VARIABLE" Ptr
5817 check_func_headers glob.h glob
5818 enabled xlib &&
5819     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5820
5821 check_header d3d11.h
5822 check_header direct.h
5823 check_header dirent.h
5824 check_header dlfcn.h
5825 check_header dxgidebug.h
5826 check_header dxva.h
5827 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5828 check_header io.h
5829 check_header libcrystalhd/libcrystalhd_if.h
5830 check_header mach/mach_time.h
5831 check_header malloc.h
5832 check_header net/udplite.h
5833 check_header poll.h
5834 check_header sys/mman.h
5835 check_header sys/param.h
5836 check_header sys/resource.h
5837 check_header sys/select.h
5838 check_header sys/time.h
5839 check_header sys/un.h
5840 check_header termios.h
5841 check_header unistd.h
5842 check_header valgrind/valgrind.h
5843 check_header VideoDecodeAcceleration/VDADecoder.h
5844 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5845 check_header windows.h
5846 check_header X11/extensions/XvMClib.h
5847 check_header asm/types.h
5848
5849 # it seems there are versions of clang in some distros that try to use the
5850 # gcc headers, which explodes for stdatomic
5851 # so we also check that atomics actually work here
5852 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5853
5854 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5855 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5856 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5857 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5858
5859 enabled appkit       && check_apple_framework AppKit
5860 enabled audiotoolbox && check_apple_framework AudioToolbox
5861 enabled avfoundation && check_apple_framework AVFoundation
5862 enabled coreimage    && check_apple_framework CoreImage
5863 enabled videotoolbox && check_apple_framework VideoToolbox
5864
5865 check_apple_framework CoreFoundation
5866 check_apple_framework CoreMedia
5867 check_apple_framework CoreVideo
5868
5869 enabled avfoundation && {
5870     disable coregraphics applicationservices
5871     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5872     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5873
5874 enabled videotoolbox && {
5875     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5876     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5877 }
5878
5879 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5880
5881 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5882 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5883 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5884 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5885 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5886
5887 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5888 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5889 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5890 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5891 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5892 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5893 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5894 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5895 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5896
5897 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5898
5899 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5900
5901 if ! disabled w32threads && ! enabled pthreads; then
5902     check_func_headers "windows.h process.h" _beginthreadex &&
5903         enable w32threads || disable w32threads
5904     if ! enabled w32threads && enabled winrt; then
5905         check_func_headers "windows.h" CreateThread &&
5906             enable w32threads || disable w32threads
5907     fi
5908 fi
5909
5910 # check for some common methods of building with pthread support
5911 # do this before the optional library checks as some of them require pthreads
5912 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5913     if check_lib pthreads pthread.h pthread_join   -pthread &&
5914        check_lib pthreads pthread.h pthread_create -pthread; then
5915         add_cflags -pthread
5916     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5917          check_lib pthreads pthread.h pthread_create -pthreads; then
5918         add_cflags -pthreads
5919     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5920          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5921         add_cflags -ldl -pthread
5922     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5923          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5924         :
5925     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5926          check_lib pthreads pthread.h pthread_create -lpthread; then
5927         :
5928     elif check_func pthread_join && check_func pthread_create; then
5929         enable pthreads
5930     fi
5931     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5932 fi
5933
5934
5935 if enabled pthreads; then
5936   check_func pthread_cancel $pthreads_extralibs
5937 fi
5938
5939 enabled pthreads &&
5940     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5941
5942 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5943 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5944 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5945
5946 # On some systems dynamic loading requires no extra linker flags
5947 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5948
5949 check_lib libm math.h sin -lm
5950
5951 atan2f_args=2
5952 copysign_args=2
5953 hypot_args=2
5954 ldexpf_args=2
5955 powf_args=2
5956
5957 for func in $MATH_FUNCS; do
5958     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5959 done
5960
5961 for func in $COMPLEX_FUNCS; do
5962     eval check_complexfunc $func \${${func}_args:-1}
5963 done
5964
5965 # these are off by default, so fail if requested and not available
5966 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5967 enabled cuvid             && { enabled cuda ||
5968                                die "ERROR: CUVID requires CUDA"; }
5969 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5970 enabled decklink          && { require_header DeckLinkAPI.h &&
5971                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5972 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5973 enabled frei0r            && require_header frei0r.h
5974 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5975 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5976 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5977 enabled ladspa            && require_header ladspa.h
5978 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5979 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5980 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5981 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5982 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5983                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5984                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5985 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5986 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5987 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5988 enabled libfdk_aac        && { use_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5989                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5990                                  warn "using libfdk without pkg-config"; } }
5991 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"
5992 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5993 enabled fontconfig        && enable libfontconfig
5994 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5995 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5996 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5997 enabled libgme            && { use_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5998                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5999 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6000                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6001                                done || die "ERROR: libgsm not found"; }
6002 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6003 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6004 # While it may appear that require is being used as a pkg-config
6005 # fallback for libmfx, it is actually being used to detect a different
6006 # installation route altogether.  If libmfx is installed via the Intel
6007 # Media SDK or Intel Media Server Studio, these don't come with
6008 # pkg-config support.  Instead, users should make sure that the build
6009 # can find the libraries and headers through other means.
6010 enabled libmfx            && { use_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6011                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
6012 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6013 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
6014 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
6015 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
6016                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
6017                                die "ERROR: libnpp not found"; }
6018 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6019 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6020 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6021                                { use_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6022                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6023                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6024 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6025 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.3/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
6026                                check_lib libopenjpeg openjpeg-2.3/openjpeg.h opj_version -lopenjp2 ||
6027                                { check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
6028                                check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 ||
6029                                { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
6030                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
6031                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
6032                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
6033                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
6034                                die "ERROR: libopenjpeg not found"; }
6035 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6036 enabled libopus           && {
6037     enabled libopus_decoder && {
6038         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6039     }
6040     enabled libopus_encoder && {
6041         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6042     }
6043 }
6044 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6045 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6046 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6047 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6048 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6049 enabled libsmbclient      && { use_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6050                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6051 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6052 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6053 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6054 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
6055 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6056 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6057 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6058                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6059                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6060 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6061 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6062 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
6063 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6064 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6065                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6066
6067 enabled libvpx            && {
6068     enabled libvpx_vp8_decoder && {
6069         use_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6070             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
6071                 die "ERROR: libvpx decoder version must be >=0.9.1";
6072     }
6073     enabled libvpx_vp8_encoder && {
6074         use_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6075             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
6076                 die "ERROR: libvpx encoder version must be >=0.9.7";
6077     }
6078     enabled libvpx_vp9_decoder && {
6079         use_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6080             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
6081     }
6082     enabled libvpx_vp9_encoder && {
6083         use_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6084             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6085     }
6086     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6087         die "libvpx enabled but no supported decoders found"
6088     fi
6089 }
6090
6091 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6092 enabled libwebp           && {
6093     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6094     enabled libwebp_anim_encoder && use_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6095 enabled libx264           && { use_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6096                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6097                                  warn "using libx264 without pkg-config"; } } &&
6098                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6099                              { check_cpp_condition x264.h "X264_MPEG2" &&
6100                                enable libx262; }
6101 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6102                              require_cpp_condition x265.h "X265_BUILD >= 68"
6103 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6104 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6105 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
6106 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6107 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6108                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6109                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6110 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6111 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6112 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6113                                { ! enabled cross_compile &&
6114                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6115                                  add_ldflags -L/opt/vc/lib/ &&
6116                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6117                                die "ERROR: mmal not found" &&
6118                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6119 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6120                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6121                                die "ERROR: openal not found"; } &&
6122                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6123                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6124 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6125                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6126                                die "ERROR: opencl not found"; } &&
6127                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6128                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6129                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6130 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6131                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6132                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6133                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6134                                die "ERROR: opengl not found."
6135                              }
6136 enabled omx               && require_header OMX_Core.h
6137 enabled omx_rpi           && { check_header OMX_Core.h ||
6138                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6139                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6140 enabled openssl           && { use_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6141                                use_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6142                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6143                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6144                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6145                                die "ERROR: openssl not found"; }
6146 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
6147                                  die "ERROR : Rockchip MPP was not found."; } &&
6148                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
6149                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
6150                                { enabled libdrm ||
6151                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6152                              }
6153
6154 if enabled gcrypt; then
6155     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6156     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6157         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6158         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6159         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6160             die "ERROR: gcrypt not found"
6161         add_cflags $gcrypt_cflags
6162     else
6163         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6164     fi
6165 fi
6166
6167 if enabled sdl2; then
6168     SDL2_CONFIG="${cross_prefix}sdl2-config"
6169     if check_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6170         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6171             disable sdl2
6172     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6173         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6174         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6175         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6176         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6177         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6178             enable sdl2
6179     fi
6180     if test $target_os = "mingw32"; then
6181         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6182     fi
6183 fi
6184
6185 if enabled decklink; then
6186     case $target_os in
6187         mingw32*|mingw64*|win32|win64)
6188             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6189             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6190             ;;
6191     esac
6192 fi
6193
6194 enabled securetransport &&
6195     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6196     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6197         disable securetransport
6198
6199 enabled schannel &&
6200     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6201     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6202     schannel_extralibs="-lsecur32" ||
6203         disable schannel
6204
6205 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6206 enabled makeinfo \
6207     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6208     && enable makeinfo_html || disable makeinfo_html
6209 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6210 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6211 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6212 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6213
6214 # check V4L2 codecs available in the API
6215 check_header linux/fb.h
6216 check_header linux/videodev2.h
6217 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6218 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6219 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6220 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6221 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6222 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6223 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6224 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6225 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6226 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6227 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6228
6229 check_header sys/videoio.h
6230 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6231
6232 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6233 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6234 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6235 # w32api 3.12 had it defined wrong
6236 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6237
6238 check_type "dshow.h" IBaseFilter
6239
6240 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6241 { check_header dev/bktr/ioctl_meteor.h &&
6242   check_header dev/bktr/ioctl_bt848.h; } ||
6243 { check_header machine/ioctl_meteor.h &&
6244   check_header machine/ioctl_bt848.h; } ||
6245 { check_header dev/video/meteor/ioctl_meteor.h &&
6246   check_header dev/video/bktr/ioctl_bt848.h; } ||
6247 check_header dev/ic/bt8xx.h
6248
6249 if check_struct sys/soundcard.h audio_buf_info bytes; then
6250     enable_safe sys/soundcard.h
6251 else
6252     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6253     #include <sys/soundcard.h>
6254     audio_buf_info abc;
6255 EOF
6256 fi
6257 check_header soundcard.h
6258
6259 enabled alsa && check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6260
6261 enabled jack && check_lib jack jack/jack.h jack_client_open -ljack &&
6262     check_func jack_port_get_latency_range -ljack
6263
6264 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6265
6266 if enabled libcdio; then
6267     use_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6268     use_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6269     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6270     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6271     die "ERROR: No usable libcdio/cdparanoia found"
6272 fi
6273
6274 enabled libxcb && use_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6275     disable libxcb_shm libxcb_shape libxcb_xfixes
6276
6277 if enabled libxcb; then
6278     enabled libxcb_shm    && use_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6279     enabled libxcb_shape  && use_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6280     enabled libxcb_xfixes && use_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6281 fi
6282
6283 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6284
6285 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6286 # the desktop api partition
6287 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6288 #ifdef WINAPI_FAMILY
6289 #include <winapifamily.h>
6290 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6291 #error desktop, not uwp
6292 #else
6293 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6294 #endif
6295 #else
6296 #error no family set
6297 #endif
6298 EOF
6299
6300 enabled vaapi &&
6301     check_lib vaapi va/va.h vaInitialize -lva
6302
6303 enabled vaapi &&
6304     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6305     disable vaapi
6306
6307 enabled vaapi &&
6308     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6309
6310 enabled vaapi &&
6311     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6312
6313 enabled vaapi &&
6314     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6315     enable vaapi_1
6316
6317 enabled vdpau &&
6318     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6319     disable vdpau
6320
6321 enabled vdpau &&
6322     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6323
6324 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6325
6326 if enabled x86; then
6327     case $target_os in
6328         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6329             ;;
6330         *)
6331             disable cuda cuvid nvenc
6332             ;;
6333     esac
6334 else
6335     disable cuda cuvid nvenc
6336 fi
6337
6338 enabled nvenc &&
6339     check_cc -I$source_path <<EOF || disable nvenc
6340 #include "compat/nvenc/nvEncodeAPI.h"
6341 NV_ENCODE_API_FUNCTION_LIST flist;
6342 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6343 int main(void) { return 0; }
6344 EOF
6345
6346 # Funny iconv installations are not unusual, so check it after all flags have been set
6347 if enabled libc_iconv; then
6348     check_func_headers iconv.h iconv
6349 elif enabled iconv; then
6350     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6351 fi
6352
6353 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6354
6355 # add some useful compiler flags if supported
6356 check_cflags -Wdeclaration-after-statement
6357 check_cflags -Wall
6358 check_cflags -Wdisabled-optimization
6359 check_cflags -Wpointer-arith
6360 check_cflags -Wredundant-decls
6361 check_cflags -Wwrite-strings
6362 check_cflags -Wtype-limits
6363 check_cflags -Wundef
6364 check_cflags -Wmissing-prototypes
6365 check_cflags -Wno-pointer-to-int-cast
6366 check_cflags -Wstrict-prototypes
6367 check_cflags -Wempty-body
6368
6369 if enabled extra_warnings; then
6370     check_cflags -Wcast-qual
6371     check_cflags -Wextra
6372     check_cflags -Wpedantic
6373 fi
6374
6375 check_disable_warning(){
6376     warning_flag=-W${1#-Wno-}
6377     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6378 }
6379
6380 test_cflags -Werror=unused-command-line-argument &&
6381     append unknown_warning_flags "-Werror=unused-command-line-argument"
6382 test_cflags -Werror=unknown-warning-option &&
6383     append unknown_warning_flags "-Werror=unknown-warning-option"
6384
6385 check_disable_warning -Wno-parentheses
6386 check_disable_warning -Wno-switch
6387 check_disable_warning -Wno-format-zero-length
6388 check_disable_warning -Wno-pointer-sign
6389 check_disable_warning -Wno-unused-const-variable
6390 check_disable_warning -Wno-bool-operation
6391
6392 check_disable_warning_headers(){
6393     warning_flag=-W${1#-Wno-}
6394     test_cflags $warning_flag && add_cflags_headers $1
6395 }
6396
6397 check_disable_warning_headers -Wno-deprecated-declarations
6398 check_disable_warning_headers -Wno-unused-variable
6399
6400 check_cc <<EOF && enable blocks_extension
6401 void (^block)(void);
6402 EOF
6403
6404 # add some linker flags
6405 check_ldflags -Wl,--warn-common
6406 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6407 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6408 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6409 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6410
6411 # add some strip flags
6412 check_stripflags -x
6413
6414 enabled neon_clobber_test &&
6415     check_ldflags -Wl,--wrap,avcodec_open2              \
6416                   -Wl,--wrap,avcodec_decode_audio4      \
6417                   -Wl,--wrap,avcodec_decode_video2      \
6418                   -Wl,--wrap,avcodec_decode_subtitle2   \
6419                   -Wl,--wrap,avcodec_encode_audio2      \
6420                   -Wl,--wrap,avcodec_encode_video2      \
6421                   -Wl,--wrap,avcodec_encode_subtitle    \
6422                   -Wl,--wrap,avcodec_send_packet        \
6423                   -Wl,--wrap,avcodec_receive_packet     \
6424                   -Wl,--wrap,avcodec_send_frame         \
6425                   -Wl,--wrap,avcodec_receive_frame      \
6426                   -Wl,--wrap,swr_convert                \
6427                   -Wl,--wrap,avresample_convert ||
6428     disable neon_clobber_test
6429
6430 enabled xmm_clobber_test &&
6431     check_ldflags -Wl,--wrap,avcodec_open2              \
6432                   -Wl,--wrap,avcodec_decode_audio4      \
6433                   -Wl,--wrap,avcodec_decode_video2      \
6434                   -Wl,--wrap,avcodec_decode_subtitle2   \
6435                   -Wl,--wrap,avcodec_encode_audio2      \
6436                   -Wl,--wrap,avcodec_encode_video2      \
6437                   -Wl,--wrap,avcodec_encode_subtitle    \
6438                   -Wl,--wrap,avcodec_send_packet        \
6439                   -Wl,--wrap,avcodec_receive_packet     \
6440                   -Wl,--wrap,avcodec_send_frame         \
6441                   -Wl,--wrap,avcodec_receive_frame      \
6442                   -Wl,--wrap,swr_convert                \
6443                   -Wl,--wrap,avresample_convert         \
6444                   -Wl,--wrap,sws_scale ||
6445     disable xmm_clobber_test
6446
6447 check_ld "cc" <<EOF && enable proper_dce
6448 extern const int array[512];
6449 static inline int func(void) { return array[0]; }
6450 int main(void) { return 0; }
6451 EOF
6452
6453 if enabled proper_dce; then
6454     echo "X { local: *; };" > $TMPV
6455     if test_ldflags -Wl,${version_script},$TMPV; then
6456         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6457         check_cc <<EOF && enable symver_asm_label
6458 void ff_foo(void) __asm__ ("av_foo@VERSION");
6459 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6460 EOF
6461         check_cc <<EOF && enable symver_gnu_asm
6462 __asm__(".symver ff_foo,av_foo@VERSION");
6463 void ff_foo(void) {}
6464 EOF
6465     fi
6466 fi
6467
6468 if [ -z "$optflags" ]; then
6469     if enabled small; then
6470         optflags=$cflags_size
6471     elif enabled optimizations; then
6472         optflags=$cflags_speed
6473     else
6474         optflags=$cflags_noopt
6475     fi
6476 fi
6477
6478 if [ -z "$nvccflags" ]; then
6479     nvccflags=$nvccflags_default
6480 fi
6481
6482 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6483     nvccflags="$nvccflags -m64"
6484 else
6485     nvccflags="$nvccflags -m32"
6486 fi
6487
6488 check_optflags(){
6489     check_cflags "$@"
6490     enabled lto && check_ldflags "$@"
6491 }
6492
6493 check_optflags $optflags
6494 check_optflags -fno-math-errno
6495 check_optflags -fno-signed-zeros
6496
6497 if enabled lto; then
6498     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6499     check_cflags  -flto
6500     check_ldflags -flto $cpuflags
6501     disable inline_asm_direct_symbol_refs
6502 fi
6503
6504 enabled ftrapv && check_cflags -ftrapv
6505
6506 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6507 int x;
6508 EOF
6509
6510
6511 if enabled icc; then
6512     # Just warnings, no remarks
6513     check_cflags -w1
6514     # -wd: Disable following warnings
6515     # 144, 167, 556: -Wno-pointer-sign
6516     # 188: enumerated type mixed with another type
6517     # 1292: attribute "foo" ignored
6518     # 1419: external declaration in primary source file
6519     # 10006: ignoring unknown option -fno-signed-zeros
6520     # 10148: ignoring unknown option -Wno-parentheses
6521     # 10156: ignoring option '-W'; no argument required
6522     # 13200: No EMMS instruction before call to function
6523     # 13203: No EMMS instruction before return from function
6524     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6525     # 11030: Warning unknown option --as-needed
6526     # 10156: ignoring option '-export'; no argument required
6527     check_ldflags -wd10156,11030
6528     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6529     enable ebp_available
6530     # The test above does not test linking
6531     enabled lto && disable symver_asm_label
6532     if enabled x86_32; then
6533         icc_version=$($cc -dumpversion)
6534         test ${icc_version%%.*} -ge 11 &&
6535             check_cflags -falign-stack=maintain-16-byte ||
6536             disable aligned_stack
6537     fi
6538 elif enabled ccc; then
6539     # disable some annoying warnings
6540     add_cflags -msg_disable bitnotint
6541     add_cflags -msg_disable mixfuncvoid
6542     add_cflags -msg_disable nonstandcast
6543     add_cflags -msg_disable unsupieee
6544 elif enabled gcc; then
6545     check_optflags -fno-tree-vectorize
6546     check_cflags -Werror=format-security
6547     check_cflags -Werror=implicit-function-declaration
6548     check_cflags -Werror=missing-prototypes
6549     check_cflags -Werror=return-type
6550     check_cflags -Werror=vla
6551     check_cflags -Wformat
6552     check_cflags -fdiagnostics-color=auto
6553     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6554 elif enabled llvm_gcc; then
6555     check_cflags -mllvm -stack-alignment=16
6556 elif enabled clang; then
6557     check_cflags -mllvm -stack-alignment=16
6558     check_cflags -mstack-alignment=16
6559     check_cflags -Qunused-arguments
6560     check_cflags -Werror=implicit-function-declaration
6561     check_cflags -Werror=missing-prototypes
6562     check_cflags -Werror=return-type
6563 elif enabled cparser; then
6564     add_cflags -Wno-missing-variable-declarations
6565     add_cflags -Wno-empty-statement
6566 elif enabled armcc; then
6567     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6568     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6569     # 2523: use of inline assembly is deprecated
6570     add_cflags -W${armcc_opt},--diag_suppress=2523
6571     add_cflags -W${armcc_opt},--diag_suppress=1207
6572     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6573     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6574     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6575     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6576 elif enabled tms470; then
6577     add_cflags -pds=824 -pds=837
6578     disable inline_asm
6579 elif enabled pathscale; then
6580     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6581 elif enabled_any msvc icl; then
6582     enabled x86_32 && disable aligned_stack
6583     enabled_all x86_32 debug && add_cflags -Oy-
6584     enabled debug && add_ldflags -debug
6585     enable pragma_deprecated
6586     if enabled icl; then
6587         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6588         # (correctly) on icl 13.x.
6589         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6590             add_cflags -Qansi-alias
6591         # Some inline asm is not compilable in debug
6592         if enabled debug; then
6593             disable ebp_available
6594             disable ebx_available
6595         fi
6596     fi
6597     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6598     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6599     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6600     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6601     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6602     # MSVC 2013 and newer can handle it fine.
6603     # If this declspec fails, force including stdlib.h before the restrict redefinition
6604     # happens in config.h.
6605     if [ $_restrict != restrict ]; then
6606         check_cc <<EOF || add_cflags -FIstdlib.h
6607 __declspec($_restrict) void* foo(int);
6608 EOF
6609     fi
6610     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6611     # Issue has been fixed in MSVC v19.00.24218.
6612     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6613         check_cflags -d2SSAOptimizer-
6614     # enable utf-8 source processing on VS2015 U2 and newer
6615     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6616         add_cflags -utf-8
6617 fi
6618
6619 for pfx in "" host_; do
6620     varname=${pfx%_}cc_type
6621     eval "type=\$$varname"
6622     if [ "$type" = "msvc" ]; then
6623         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6624 static inline int foo(int a) { return a; }
6625 EOF
6626     fi
6627 done
6628
6629 case $as_type in
6630     clang)
6631         add_asflags -Qunused-arguments
6632     ;;
6633 esac
6634
6635 case $ld_type in
6636     clang)
6637         check_ldflags -Qunused-arguments
6638     ;;
6639 esac
6640
6641 case $target_os in
6642     osf1)
6643         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6644     ;;
6645 esac
6646
6647 enable frame_thread_encoder
6648
6649 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6650
6651 check_deps $CONFIG_LIST       \
6652            $CONFIG_EXTRA      \
6653            $HAVE_LIST         \
6654            $ALL_COMPONENTS    \
6655
6656 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"
6657
6658
6659 if test $target_os = "haiku"; then
6660     disable memalign
6661     disable posix_memalign
6662 fi
6663
6664 flatten_extralibs(){
6665     unset nested_entries
6666     list_name=$1
6667     eval list=\$${1}
6668     for entry in $list; do
6669         entry_copy=$entry
6670         resolve entry_copy
6671         append nested_entries $(filter '*_extralibs' $entry_copy)
6672         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6673         eval $entry="\$flat_entries"
6674     done
6675     append $list_name "$nested_entries"
6676
6677     resolve nested_entries
6678     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6679         flatten_extralibs $list_name
6680     fi
6681 }
6682
6683 for linkunit in $LIBRARY_LIST; do
6684     unset current_extralibs
6685     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6686     for comp in ${components}; do
6687         enabled $comp || continue
6688         comp_extralibs="${comp}_extralibs"
6689         append current_extralibs $comp_extralibs
6690     done
6691     eval prepend ${linkunit}_extralibs $current_extralibs
6692 done
6693
6694 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6695     flatten_extralibs ${linkunit}_extralibs
6696     unique  ${linkunit}_extralibs
6697     resolve ${linkunit}_extralibs
6698     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
6699 done
6700
6701 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6702
6703 for thread in $THREADS_LIST; do
6704     if enabled $thread; then
6705         test -n "$thread_type" &&
6706             die "ERROR: Only one thread type must be selected." ||
6707             thread_type="$thread"
6708     fi
6709 done
6710
6711 if disabled stdatomic_h; then
6712     if enabled atomics_gcc; then
6713         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6714     elif enabled atomics_win32; then
6715         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6716     elif enabled atomics_suncc; then
6717         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6718     elif enabled pthreads; then
6719         add_compat atomics/pthread/stdatomic.o
6720         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6721     else
6722         enabled threads && die "Threading is enabled, but no atomics are available"
6723         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6724     fi
6725 fi
6726
6727 # Check if requested libraries were found.
6728 for lib in $AUTODETECT_LIBS; do
6729     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6730 done
6731
6732 enabled zlib && add_cppflags -DZLIB_CONST
6733
6734 # conditional library dependencies, in linking order
6735 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6736 enabled afir_filter         && prepend avfilter_deps "avcodec"
6737 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6738 enabled aresample_filter    && prepend avfilter_deps "swresample"
6739 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6740 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6741 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6742 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6743 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6744 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6745 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6746 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6747 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6748 enabled pan_filter          && prepend avfilter_deps "swresample"
6749 enabled pp_filter           && prepend avfilter_deps "postproc"
6750 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6751 enabled resample_filter && prepend avfilter_deps "avresample"
6752 enabled sab_filter          && prepend avfilter_deps "swscale"
6753 enabled scale_filter    && prepend avfilter_deps "swscale"
6754 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6755 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6756 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6757 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6758 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6759 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6760 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6761 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6762 enabled spp_filter          && prepend avfilter_deps "avcodec"
6763 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6764 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6765 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6766
6767 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6768
6769 #FIXME
6770 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6771
6772 enabled opus_decoder    && prepend avcodec_deps "swresample"
6773
6774 expand_deps(){
6775     lib_deps=${1}_deps
6776     eval "deps=\$$lib_deps"
6777     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6778     unique $lib_deps
6779 }
6780
6781 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6782 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6783
6784 map 'expand_deps $v' $LIBRARY_LIST
6785
6786 license="LGPL version 2.1 or later"
6787 if enabled nonfree; then
6788     license="nonfree and unredistributable"
6789 elif enabled gplv3; then
6790     license="GPL version 3 or later"
6791 elif enabled lgplv3; then
6792     license="LGPL version 3 or later"
6793 elif enabled gpl; then
6794     license="GPL version 2 or later"
6795 fi
6796
6797 if test "$quiet" != "yes"; then
6798
6799 echo "install prefix            $prefix"
6800 echo "source path               $source_path"
6801 echo "C compiler                $cc"
6802 echo "C library                 $libc_type"
6803 if test "$host_cc" != "$cc"; then
6804     echo "host C compiler           $host_cc"
6805     echo "host C library            $host_libc_type"
6806 fi
6807 echo "ARCH                      $arch ($cpu)"
6808 if test "$build_suffix" != ""; then
6809     echo "build suffix              $build_suffix"
6810 fi
6811 if test "$progs_suffix" != ""; then
6812     echo "progs suffix              $progs_suffix"
6813 fi
6814 if test "$extra_version" != ""; then
6815     echo "version string suffix     $extra_version"
6816 fi
6817 echo "big-endian                ${bigendian-no}"
6818 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6819 if enabled x86; then
6820     echo "standalone assembly       ${x86asm-no}"
6821     echo "x86 assembler             ${x86asmexe}"
6822     echo "MMX enabled               ${mmx-no}"
6823     echo "MMXEXT enabled            ${mmxext-no}"
6824     echo "3DNow! enabled            ${amd3dnow-no}"
6825     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6826     echo "SSE enabled               ${sse-no}"
6827     echo "SSSE3 enabled             ${ssse3-no}"
6828     echo "AESNI enabled             ${aesni-no}"
6829     echo "AVX enabled               ${avx-no}"
6830     echo "AVX2 enabled              ${avx2-no}"
6831     echo "XOP enabled               ${xop-no}"
6832     echo "FMA3 enabled              ${fma3-no}"
6833     echo "FMA4 enabled              ${fma4-no}"
6834     echo "i686 features enabled     ${i686-no}"
6835     echo "CMOV is fast              ${fast_cmov-no}"
6836     echo "EBX available             ${ebx_available-no}"
6837     echo "EBP available             ${ebp_available-no}"
6838 fi
6839 if enabled aarch64; then
6840     echo "NEON enabled              ${neon-no}"
6841     echo "VFP enabled               ${vfp-no}"
6842 fi
6843 if enabled arm; then
6844     echo "ARMv5TE enabled           ${armv5te-no}"
6845     echo "ARMv6 enabled             ${armv6-no}"
6846     echo "ARMv6T2 enabled           ${armv6t2-no}"
6847     echo "VFP enabled               ${vfp-no}"
6848     echo "NEON enabled              ${neon-no}"
6849     echo "THUMB enabled             ${thumb-no}"
6850 fi
6851 if enabled mips; then
6852     echo "MIPS FPU enabled          ${mipsfpu-no}"
6853     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6854     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6855     echo "MIPS MSA enabled          ${msa-no}"
6856     echo "LOONGSON MMI enabled      ${mmi-no}"
6857 fi
6858 if enabled ppc; then
6859     echo "AltiVec enabled           ${altivec-no}"
6860     echo "VSX enabled               ${vsx-no}"
6861     echo "POWER8 enabled            ${power8-no}"
6862     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6863     echo "dcbzl available           ${dcbzl-no}"
6864 fi
6865 echo "debug symbols             ${debug-no}"
6866 echo "strip symbols             ${stripping-no}"
6867 echo "optimize for size         ${small-no}"
6868 echo "optimizations             ${optimizations-no}"
6869 echo "static                    ${static-no}"
6870 echo "shared                    ${shared-no}"
6871 echo "postprocessing support    ${postproc-no}"
6872 echo "network support           ${network-no}"
6873 echo "threading support         ${thread_type-no}"
6874 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6875 echo "texi2html enabled         ${texi2html-no}"
6876 echo "perl enabled              ${perl-no}"
6877 echo "pod2man enabled           ${pod2man-no}"
6878 echo "makeinfo enabled          ${makeinfo-no}"
6879 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6880 test -n "$random_seed" &&
6881     echo "random seed               ${random_seed}"
6882 echo
6883
6884 echo "External libraries:"
6885 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6886 echo
6887
6888 echo "External libraries providing hardware acceleration:"
6889 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6890 echo
6891
6892 echo "Libraries:"
6893 print_enabled '' $LIBRARY_LIST | print_in_columns
6894 echo
6895
6896 echo "Programs:"
6897 print_enabled '' $PROGRAM_LIST | print_in_columns
6898 echo
6899
6900 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6901     echo "Enabled ${type}s:"
6902     eval list=\$$(toupper $type)_LIST
6903     print_enabled '_*' $list | print_in_columns
6904     echo
6905 done
6906
6907 if test -n "$ignore_tests"; then
6908     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6909     echo "Ignored FATE tests:"
6910     echo $ignore_tests | print_in_columns
6911     echo
6912 fi
6913
6914 echo "License: $license"
6915
6916 echo "Creating configuration files ..."
6917
6918 fi # test "$quiet" != "yes"
6919
6920 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6921
6922 enabled stripping || strip="echo skipping strip"
6923 enabled stripping || striptype=""
6924
6925 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6926
6927 cat > ffbuild/config.mak <<EOF
6928 # Automatically generated by configure - do not modify!
6929 ifndef FFMPEG_CONFIG_MAK
6930 FFMPEG_CONFIG_MAK=1
6931 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6932 prefix=$prefix
6933 LIBDIR=\$(DESTDIR)$libdir
6934 SHLIBDIR=\$(DESTDIR)$shlibdir
6935 INCDIR=\$(DESTDIR)$incdir
6936 BINDIR=\$(DESTDIR)$bindir
6937 DATADIR=\$(DESTDIR)$datadir
6938 DOCDIR=\$(DESTDIR)$docdir
6939 MANDIR=\$(DESTDIR)$mandir
6940 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6941 INSTALL_NAME_DIR=$install_name_dir
6942 SRC_PATH=$source_path
6943 SRC_LINK=$source_link
6944 ifndef MAIN_MAKEFILE
6945 SRC_PATH:=\$(SRC_PATH:.%=..%)
6946 endif
6947 CC_IDENT=$cc_ident
6948 ARCH=$arch
6949 INTRINSICS=$intrinsics
6950 CC=$cc
6951 CXX=$cxx
6952 AS=$as
6953 OBJCC=$objcc
6954 LD=$ld
6955 DEPCC=$dep_cc
6956 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6957 DEPAS=$as
6958 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6959 X86ASM=$x86asmexe
6960 DEPX86ASM=$x86asmexe
6961 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6962 AR=$ar
6963 ARFLAGS=$arflags
6964 AR_O=$ar_o
6965 RANLIB=$ranlib
6966 STRIP=$strip
6967 STRIPTYPE=$striptype
6968 NVCC=$nvcc
6969 CP=cp -p
6970 LN_S=$ln_s
6971 CPPFLAGS=$CPPFLAGS
6972 CFLAGS=$CFLAGS
6973 CXXFLAGS=$CXXFLAGS
6974 OBJCFLAGS=$OBJCFLAGS
6975 ASFLAGS=$ASFLAGS
6976 NVCCFLAGS=$nvccflags
6977 AS_C=$AS_C
6978 AS_O=$AS_O
6979 OBJCC_C=$OBJCC_C
6980 OBJCC_E=$OBJCC_E
6981 OBJCC_O=$OBJCC_O
6982 CC_C=$CC_C
6983 CC_E=$CC_E
6984 CC_O=$CC_O
6985 CXX_C=$CXX_C
6986 CXX_O=$CXX_O
6987 NVCC_C=$NVCC_C
6988 NVCC_O=$NVCC_O
6989 LD_O=$LD_O
6990 X86ASM_O=$X86ASM_O
6991 LD_LIB=$LD_LIB
6992 LD_PATH=$LD_PATH
6993 DLLTOOL=$dlltool
6994 WINDRES=$windres
6995 DEPWINDRES=$dep_cc
6996 DOXYGEN=$doxygen
6997 LDFLAGS=$LDFLAGS
6998 LDEXEFLAGS=$LDEXEFLAGS
6999 LDLIBFLAGS=$LDLIBFLAGS
7000 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7001 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7002 X86ASMFLAGS=$X86ASMFLAGS
7003 BUILDSUF=$build_suffix
7004 PROGSSUF=$progs_suffix
7005 FULLNAME=$FULLNAME
7006 LIBPREF=$LIBPREF
7007 LIBSUF=$LIBSUF
7008 LIBNAME=$LIBNAME
7009 SLIBPREF=$SLIBPREF
7010 SLIBSUF=$SLIBSUF
7011 EXESUF=$EXESUF
7012 EXTRA_VERSION=$extra_version
7013 CCDEP=$CCDEP
7014 CXXDEP=$CXXDEP
7015 CCDEP_FLAGS=$CCDEP_FLAGS
7016 ASDEP=$ASDEP
7017 ASDEP_FLAGS=$ASDEP_FLAGS
7018 X86ASMDEP=$X86ASMDEP
7019 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7020 CC_DEPFLAGS=$CC_DEPFLAGS
7021 AS_DEPFLAGS=$AS_DEPFLAGS
7022 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7023 HOSTCC=$host_cc
7024 HOSTLD=$host_ld
7025 HOSTCFLAGS=$host_cflags
7026 HOSTCPPFLAGS=$host_cppflags
7027 HOSTEXESUF=$HOSTEXESUF
7028 HOSTLDFLAGS=$host_ldflags
7029 HOSTEXTRALIBS=$host_extralibs
7030 DEPHOSTCC=$host_cc
7031 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7032 HOSTCCDEP=$HOSTCCDEP
7033 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7034 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7035 HOSTCC_C=$HOSTCC_C
7036 HOSTCC_O=$HOSTCC_O
7037 HOSTLD_O=$HOSTLD_O
7038 TARGET_EXEC=$target_exec $target_exec_args
7039 TARGET_PATH=$target_path
7040 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7041 CFLAGS-ffplay=${sdl2_cflags}
7042 CFLAGS_HEADERS=$CFLAGS_HEADERS
7043 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7044 EXTRALIBS=$extralibs
7045 COMPAT_OBJS=$compat_objs
7046 INSTALL=$install
7047 LIBTARGET=${LIBTARGET}
7048 SLIBNAME=${SLIBNAME}
7049 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7050 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7051 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7052 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7053 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7054 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7055 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7056 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7057 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7058 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7059 NOREDZONE_FLAGS=$noredzone_flags
7060 LIBFUZZER_PATH=$libfuzzer_path
7061 IGNORE_TESTS=$ignore_tests
7062 EOF
7063
7064 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7065
7066 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7067     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7068 done
7069
7070 cat > $TMPH <<EOF
7071 /* Automatically generated by configure - do not modify! */
7072 #ifndef FFMPEG_CONFIG_H
7073 #define FFMPEG_CONFIG_H
7074 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7075 #define FFMPEG_LICENSE "$(c_escape $license)"
7076 #define CONFIG_THIS_YEAR 2017
7077 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7078 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7079 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7080 #define av_restrict $_restrict
7081 #define EXTERN_PREFIX "${extern_prefix}"
7082 #define EXTERN_ASM ${extern_prefix}
7083 #define BUILDSUF "$build_suffix"
7084 #define SLIBSUF "$SLIBSUF"
7085 #define HAVE_MMX2 HAVE_MMXEXT
7086 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7087 EOF
7088
7089 test -n "$assert_level" &&
7090     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7091
7092 test -n "$malloc_prefix" &&
7093     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7094
7095 if enabled x86asm; then
7096     append config_files $TMPASM
7097     printf '' >$TMPASM
7098 fi
7099
7100 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7101
7102
7103 mkdir -p doc
7104 mkdir -p tests
7105 mkdir -p tests/api
7106 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7107
7108 print_config ARCH_   "$config_files" $ARCH_LIST
7109 print_config HAVE_   "$config_files" $HAVE_LIST
7110 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7111                                      $CONFIG_EXTRA      \
7112                                      $ALL_COMPONENTS    \
7113
7114 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7115 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7116
7117 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7118 cp_if_changed $TMPH config.h
7119 touch ffbuild/.config
7120
7121 enabled x86asm && cp_if_changed $TMPASM config.asm
7122
7123 cat > $TMPH <<EOF
7124 /* Generated by ffconf */
7125 #ifndef AVUTIL_AVCONFIG_H
7126 #define AVUTIL_AVCONFIG_H
7127 EOF
7128
7129 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7130
7131 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7132
7133 cp_if_changed $TMPH libavutil/avconfig.h
7134
7135 # generate the lists of enabled components
7136 print_enabled_components(){
7137     file=$1
7138     struct_name=$2
7139     name=$3
7140     shift 3
7141     echo "static const $struct_name * const $name[] = {" > $TMPH
7142     for c in $*; do
7143         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7144     done
7145     echo "    NULL };" >> $TMPH
7146     cp_if_changed $TMPH $file
7147 }
7148
7149 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7150 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7151
7152 if test -n "$WARNINGS"; then
7153     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7154     enabled fatal_warnings && exit 1
7155 fi
7156
7157 # Settings for pkg-config files
7158
7159 cat > ffbuild/config.sh <<EOF
7160 # Automatically generated by configure - do not modify!
7161 shared=$shared
7162 build_suffix=$build_suffix
7163 prefix=$prefix
7164 libdir=$libdir
7165 incdir=$incdir
7166 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7167 source_path=${source_path}
7168 LIBPREF=${LIBPREF}
7169 LIBSUF=${LIBSUF}
7170 extralibs_avutil="$avutil_extralibs"
7171 extralibs_avcodec="$avcodec_extralibs"
7172 extralibs_avformat="$avformat_extralibs"
7173 extralibs_avdevice="$avdevice_extralibs"
7174 extralibs_avfilter="$avfilter_extralibs"
7175 extralibs_avresample="$avresample_extralibs"
7176 extralibs_postproc="$postproc_extralibs"
7177 extralibs_swscale="$swscale_extralibs"
7178 extralibs_swresample="$swresample_extralibs"
7179 EOF
7180
7181 for lib in $LIBRARY_LIST; do
7182     lib_deps="$(eval echo \$${lib}_deps)"
7183     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7184 done