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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --enable-jni             enable JNI support [no]
 221   --enable-ladspa          enable LADSPA audio filtering [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --disable-lzma           disable lzma [autodetect]
 287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 289   --enable-mediacodec      enable Android MediaCodec support [no]
 290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 291   --enable-openal          enable OpenAL 1.1 capture support [no]
 292   --enable-opencl          enable OpenCL code
 293   --enable-opengl          enable OpenGL rendering [no]
 294   --enable-openssl         enable openssl, needed for https support
 295                            if gnutls is not used [no]
 296   --disable-sndio          disable sndio support [autodetect]
 297   --disable-schannel       disable SChannel SSP, needed for TLS support on
 298                            Windows if openssl and gnutls are not used [autodetect]
 299   --disable-sdl2           disable sdl2 [autodetect]
 300   --disable-securetransport disable Secure Transport, needed for TLS support
 301                            on OSX if openssl and gnutls are not used [autodetect]
 302   --disable-xlib           disable xlib [autodetect]
 303   --disable-zlib           disable zlib [autodetect]
 304
 305   The following libraries provide various hardware acceleration features:
 306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 312   --enable-libdrm          enable DRM code (Linux) [no]
 313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 316   --disable-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-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 322   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 323
 324 Toolchain options:
 325   --arch=ARCH              select architecture [$arch]
 326   --cpu=CPU                select the minimum required CPU (affects
 327                            instruction selection, may crash on older CPUs)
 328   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 329   --progs-suffix=SUFFIX    program name suffix []
 330   --enable-cross-compile   assume a cross-compiler is used
 331   --sysroot=PATH           root of cross-build tree
 332   --sysinclude=PATH        location of cross-build system headers
 333   --target-os=OS           compiler targets OS [$target_os]
 334   --target-exec=CMD        command to run executables on target
 335   --target-path=DIR        path to view of build directory on target
 336   --target-samples=DIR     path to samples directory on target
 337   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 338   --toolchain=NAME         set tool defaults according to NAME
 339   --nm=NM                  use nm tool NM [$nm_default]
 340   --ar=AR                  use archive tool AR [$ar_default]
 341   --as=AS                  use assembler AS [$as_default]
 342   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 343   --strip=STRIP            use strip tool STRIP [$strip_default]
 344   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 345   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 346   --cc=CC                  use C compiler CC [$cc_default]
 347   --cxx=CXX                use C compiler CXX [$cxx_default]
 348   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 349   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 350   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 351   --ld=LD                  use linker LD [$ld_default]
 352   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 353   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 354   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 355   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 356   --host-cc=HOSTCC         use host C compiler HOSTCC
 357   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 358   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 359   --host-ld=HOSTLD         use host linker HOSTLD
 360   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 361   --host-libs=HLIBS        use libs HLIBS when linking for host
 362   --host-os=OS             compiler host OS [$target_os]
 363   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 364   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 365   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 366   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 367   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 368   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 369   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 370   --extra-version=STRING   version string suffix []
 371   --optflags=OPTFLAGS      override optimization-related compiler flags
 372   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 373   --build-suffix=SUFFIX    library name suffix []
 374   --enable-pic             build position-independent code
 375   --enable-thumb           compile for Thumb instruction set
 376   --enable-lto             use link-time optimization
 377   --env="ENV=override"     override the environment variables
 378
 379 Advanced options (experts only):
 380   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 381   --custom-allocator=NAME  use a supported custom allocator
 382   --disable-symver         disable symbol versioning
 383   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 384   --disable-safe-bitstream-reader
 385                            disable buffer boundary checking in bitreaders
 386                            (faster, but may crash)
 387   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 388
 389 Optimization options (experts only):
 390   --disable-asm            disable all assembly optimizations
 391   --disable-altivec        disable AltiVec optimizations
 392   --disable-vsx            disable VSX optimizations
 393   --disable-power8         disable POWER8 optimizations
 394   --disable-amd3dnow       disable 3DNow! optimizations
 395   --disable-amd3dnowext    disable 3DNow! extended optimizations
 396   --disable-mmx            disable MMX optimizations
 397   --disable-mmxext         disable MMXEXT optimizations
 398   --disable-sse            disable SSE optimizations
 399   --disable-sse2           disable SSE2 optimizations
 400   --disable-sse3           disable SSE3 optimizations
 401   --disable-ssse3          disable SSSE3 optimizations
 402   --disable-sse4           disable SSE4 optimizations
 403   --disable-sse42          disable SSE4.2 optimizations
 404   --disable-avx            disable AVX optimizations
 405   --disable-xop            disable XOP optimizations
 406   --disable-fma3           disable FMA3 optimizations
 407   --disable-fma4           disable FMA4 optimizations
 408   --disable-avx2           disable AVX2 optimizations
 409   --disable-aesni          disable AESNI optimizations
 410   --disable-armv5te        disable armv5te optimizations
 411   --disable-armv6          disable armv6 optimizations
 412   --disable-armv6t2        disable armv6t2 optimizations
 413   --disable-vfp            disable VFP optimizations
 414   --disable-neon           disable NEON optimizations
 415   --disable-inline-asm     disable use of inline assembly
 416   --disable-x86asm         disable use of standalone x86 assembly
 417   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 418   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 419   --disable-msa            disable MSA optimizations
 420   --disable-mipsfpu        disable floating point MIPS optimizations
 421   --disable-mmi            disable Loongson SIMD optimizations
 422   --disable-fast-unaligned consider unaligned accesses slow
 423
 424 Developer options (useful when working on FFmpeg itself):
 425   --disable-debug          disable debugging symbols
 426   --enable-debug=LEVEL     set the debug level [$debuglevel]
 427   --disable-optimizations  disable compiler optimizations
 428   --enable-extra-warnings  enable more compiler warnings
 429   --disable-stripping      disable stripping of executables and shared libraries
 430   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 431                            2 causes a slowdown at runtime.
 432   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 433   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 434                            leaks and errors, using the specified valgrind binary.
 435                            Cannot be combined with --target-exec
 436   --enable-ftrapv          Trap arithmetic overflows
 437   --samples=PATH           location of test samples for FATE, if not set use
 438                            \$FATE_SAMPLES at make invocation time.
 439   --enable-neon-clobber-test check NEON registers for clobbering (should be
 440                            used only for debugging purposes)
 441   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 442                            should be used only for debugging purposes)
 443   --enable-random          randomly enable/disable components
 444   --disable-random
 445   --enable-random=LIST     randomly enable/disable specific components or
 446   --disable-random=LIST    component groups. LIST is a comma-separated list
 447                            of NAME[:PROB] entries where NAME is a component
 448                            (group) and PROB the probability associated with
 449                            NAME (default 0.5).
 450   --random-seed=VALUE      seed value for --enable/disable-random
 451   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 452                            (only applies to --disable-optimizations builds)
 453   --enable-osfuzz          Enable building fuzzer tool
 454   --libfuzzer=PATH         path to libfuzzer
 455   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 456                            in the name) of tests whose result is ignored
 457   --enable-linux-perf      enable Linux Performance Monitor API
 458
 459 NOTE: Object files are built at the place where configure is launched.
 460 EOF
 461   exit 0
 462 }
 463
 464 quotes='""'
 465 if test -t 1 && which tput >/dev/null 2>&1; then
 466     ncolors=$(tput colors)
 467     if test -n "$ncolors" && test $ncolors -ge 8; then
 468         bold_color=$(tput bold)
 469         warn_color=$(tput setaf 3)
 470         error_color=$(tput setaf 1)
 471         reset_color=$(tput sgr0)
 472     fi
 473     # 72 used instead of 80 since that's the default of pr
 474     ncols=$(tput cols)
 475 fi
 476 : ${ncols:=72}
 477
 478 log(){
 479     echo "$@" >> $logfile
 480 }
 481
 482 log_file(){
 483     log BEGIN $1
 484     pr -n -t $1 >> $logfile
 485     log END $1
 486 }
 487
 488 warn(){
 489     log "WARNING: $*"
 490     WARNINGS="${WARNINGS}WARNING: $*\n"
 491 }
 492
 493 die(){
 494     log "$@"
 495     echo "$error_color$bold_color$@$reset_color"
 496     cat <<EOF
 497
 498 If you think configure made a mistake, make sure you are using the latest
 499 version from Git.  If the latest version fails, report the problem to the
 500 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 501 EOF
 502     if disabled logging; then
 503         cat <<EOF
 504 Rerun configure with logging enabled (do not use --disable-logging), and
 505 include the log this produces with your report.
 506 EOF
 507     else
 508         cat <<EOF
 509 Include the log file "$logfile" produced by configure as this will help
 510 solve the problem.
 511 EOF
 512     fi
 513     exit 1
 514 }
 515
 516 # Avoid locale weirdness, besides we really just want to translate ASCII.
 517 toupper(){
 518     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 519 }
 520
 521 tolower(){
 522     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 523 }
 524
 525 c_escape(){
 526     echo "$*" | sed 's/["\\]/\\\0/g'
 527 }
 528
 529 sh_quote(){
 530     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 531     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 532     echo "$v"
 533 }
 534
 535 cleanws(){
 536     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 537 }
 538
 539 filter(){
 540     pat=$1
 541     shift
 542     for v; do
 543         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 544     done
 545 }
 546
 547 filter_out(){
 548     pat=$1
 549     shift
 550     for v; do
 551         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 552     done
 553 }
 554
 555 map(){
 556     m=$1
 557     shift
 558     for v; do eval $m; done
 559 }
 560
 561 add_suffix(){
 562     suffix=$1
 563     shift
 564     for v; do echo ${v}${suffix}; done
 565 }
 566
 567 set_all(){
 568     value=$1
 569     shift
 570     for var in $*; do
 571         eval $var=$value
 572     done
 573 }
 574
 575 set_weak(){
 576     value=$1
 577     shift
 578     for var; do
 579         eval : \${$var:=$value}
 580     done
 581 }
 582
 583 sanitize_var_name(){
 584     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 585 }
 586
 587 set_sanitized(){
 588     var=$1
 589     shift
 590     eval $(sanitize_var_name "$var")='$*'
 591 }
 592
 593 get_sanitized(){
 594     eval echo \$$(sanitize_var_name "$1")
 595 }
 596
 597 pushvar(){
 598     for pvar in $*; do
 599         eval level=\${${pvar}_level:=0}
 600         eval ${pvar}_${level}="\$$pvar"
 601         eval ${pvar}_level=$(($level+1))
 602     done
 603 }
 604
 605 popvar(){
 606     for pvar in $*; do
 607         eval level=\${${pvar}_level:-0}
 608         test $level = 0 && continue
 609         eval level=$(($level-1))
 610         eval $pvar="\${${pvar}_${level}}"
 611         eval ${pvar}_level=$level
 612         eval unset ${pvar}_${level}
 613     done
 614 }
 615
 616 request(){
 617     for var in $*; do
 618         eval ${var}_requested=yes
 619         eval $var=
 620     done
 621 }
 622
 623 enable(){
 624     set_all yes $*
 625 }
 626
 627 disable(){
 628     set_all no $*
 629 }
 630
 631 enable_weak(){
 632     set_weak yes $*
 633 }
 634
 635 disable_weak(){
 636     set_weak no $*
 637 }
 638
 639 enable_sanitized(){
 640     for var; do
 641         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 642     done
 643 }
 644
 645 disable_sanitized(){
 646     for var; do
 647         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 648     done
 649 }
 650
 651 do_enable_deep(){
 652     for var; do
 653         enabled $var && continue
 654         eval sel="\$${var}_select"
 655         eval sgs="\$${var}_suggest"
 656         pushvar var sgs
 657         enable_deep $sel
 658         popvar sgs
 659         enable_deep_weak $sgs
 660         popvar var
 661     done
 662 }
 663
 664 enable_deep(){
 665     do_enable_deep $*
 666     enable $*
 667 }
 668
 669 enable_deep_weak(){
 670     for var; do
 671         disabled $var && continue
 672         pushvar var
 673         do_enable_deep $var
 674         popvar var
 675         enable_weak $var
 676     done
 677 }
 678
 679 requested(){
 680     test "${1#!}" = "$1" && op='=' || op=!=
 681     eval test "x\$${1#!}_requested" $op "xyes"
 682 }
 683
 684 enabled(){
 685     test "${1#!}" = "$1" && op='=' || op=!=
 686     eval test "x\$${1#!}" $op "xyes"
 687 }
 688
 689 disabled(){
 690     test "${1#!}" = "$1" && op='=' || op=!=
 691     eval test "x\$${1#!}" $op "xno"
 692 }
 693
 694 enabled_all(){
 695     for opt; do
 696         enabled $opt || return 1
 697     done
 698 }
 699
 700 disabled_all(){
 701     for opt; do
 702         disabled $opt || return 1
 703     done
 704 }
 705
 706 enabled_any(){
 707     for opt; do
 708         enabled $opt && return 0
 709     done
 710 }
 711
 712 disabled_any(){
 713     for opt; do
 714         disabled $opt && return 0
 715     done
 716     return 1
 717 }
 718
 719 set_default(){
 720     for opt; do
 721         eval : \${$opt:=\$${opt}_default}
 722     done
 723 }
 724
 725 is_in(){
 726     value=$1
 727     shift
 728     for var in $*; do
 729         [ $var = $value ] && return 0
 730     done
 731     return 1
 732 }
 733
 734 check_deps(){
 735     for cfg; do
 736         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 737         disabled ${cfg}_checking && continue
 738         enable ${cfg}_checking
 739
 740         eval dep_all="\$${cfg}_deps"
 741         eval dep_any="\$${cfg}_deps_any"
 742         eval dep_con="\$${cfg}_conflict"
 743         eval dep_sel="\$${cfg}_select"
 744         eval dep_sgs="\$${cfg}_suggest"
 745         eval dep_ifa="\$${cfg}_if"
 746         eval dep_ifn="\$${cfg}_if_any"
 747
 748         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 749         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 750         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 751
 752         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 753         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 754         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 755         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 756         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 757         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 758
 759         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 760
 761         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 762             # filter out library deps, these do not belong in extralibs
 763             is_in $dep $LIBRARY_LIST && continue
 764             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 765         done
 766
 767         disable ${cfg}_checking
 768     done
 769 }
 770
 771 print_config(){
 772     pfx=$1
 773     files=$2
 774     shift 2
 775     map 'eval echo "$v \${$v:-no}"' "$@" |
 776     awk "BEGIN { split(\"$files\", files) }
 777         {
 778             c = \"$pfx\" toupper(\$1);
 779             v = \$2;
 780             sub(/yes/, 1, v);
 781             sub(/no/,  0, v);
 782             for (f in files) {
 783                 file = files[f];
 784                 if (file ~ /\\.h\$/) {
 785                     printf(\"#define %s %d\\n\", c, v) >>file;
 786                 } else if (file ~ /\\.asm\$/) {
 787                     printf(\"%%define %s %d\\n\", c, v) >>file;
 788                 } else if (file ~ /\\.mak\$/) {
 789                     n = -v ? \"\" : \"!\";
 790                     printf(\"%s%s=yes\\n\", n, c) >>file;
 791                 } else if (file ~ /\\.texi\$/) {
 792                     pre = -v ? \"\" : \"@c \";
 793                     yesno = \$2;
 794                     c2 = tolower(c);
 795                     gsub(/_/, \"-\", c2);
 796                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 797                 }
 798             }
 799         }"
 800 }
 801
 802 print_enabled(){
 803     suf=$1
 804     shift
 805     for v; do
 806         enabled $v && printf "%s\n" ${v%$suf}
 807     done
 808 }
 809
 810 append(){
 811     var=$1
 812     shift
 813     eval "$var=\"\$$var $*\""
 814 }
 815
 816 prepend(){
 817     var=$1
 818     shift
 819     eval "$var=\"$* \$$var\""
 820 }
 821
 822 unique(){
 823     var=$1
 824     uniq_list=""
 825     for tok in $(eval echo \$$var); do
 826         uniq_list="$(filter_out $tok $uniq_list) $tok"
 827     done
 828     eval "$var=\"${uniq_list}\""
 829 }
 830
 831 resolve(){
 832     var=$1
 833     tmpvar=
 834     for entry in $(eval echo \$$var); do
 835         tmpvar="$tmpvar $(eval echo \$${entry})"
 836     done
 837     eval "$var=\"${tmpvar}\""
 838 }
 839
 840 add_cppflags(){
 841     append CPPFLAGS "$@"
 842 }
 843
 844 add_cflags(){
 845     append CFLAGS $($cflags_filter "$@")
 846 }
 847
 848 add_cflags_headers(){
 849     append CFLAGS_HEADERS $($cflags_filter "$@")
 850 }
 851
 852 add_cxxflags(){
 853     append CXXFLAGS $($cflags_filter "$@")
 854 }
 855
 856 add_asflags(){
 857     append ASFLAGS $($asflags_filter "$@")
 858 }
 859
 860 add_objcflags(){
 861     append OBJCFLAGS $($objcflags_filter "$@")
 862 }
 863
 864 add_ldflags(){
 865     append LDFLAGS $($ldflags_filter "$@")
 866 }
 867
 868 add_ldexeflags(){
 869     append LDEXEFLAGS $($ldflags_filter "$@")
 870 }
 871
 872 add_ldsoflags(){
 873     append LDSOFLAGS $($ldflags_filter "$@")
 874 }
 875
 876 add_stripflags(){
 877     append ASMSTRIPFLAGS "$@"
 878 }
 879
 880 add_extralibs(){
 881     prepend extralibs $($ldflags_filter "$@")
 882 }
 883
 884 add_host_cppflags(){
 885     append host_cppflags "$@"
 886 }
 887
 888 add_host_cflags(){
 889     append host_cflags $($host_cflags_filter "$@")
 890 }
 891
 892 add_host_ldflags(){
 893     append host_ldflags $($host_ldflags_filter "$@")
 894 }
 895
 896 add_compat(){
 897     append compat_objs $1
 898     shift
 899     map 'add_cppflags -D$v' "$@"
 900 }
 901
 902 check_cmd(){
 903     log "$@"
 904     "$@" >> $logfile 2>&1
 905 }
 906
 907 check_stat(){
 908     log check_stat "$@"
 909     stat "$1" >> $logfile 2>&1
 910 }
 911
 912 cc_o(){
 913     eval printf '%s\\n' $CC_O
 914 }
 915
 916 cc_e(){
 917     eval printf '%s\\n' $CC_E
 918 }
 919
 920 check_cc(){
 921     log check_cc "$@"
 922     cat > $TMPC
 923     log_file $TMPC
 924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 925 }
 926
 927 check_cxx(){
 928     log check_cxx "$@"
 929     cat > $TMPCPP
 930     log_file $TMPCPP
 931     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 932 }
 933
 934 check_objcc(){
 935     log check_objcc "$@"
 936     cat > $TMPM
 937     log_file $TMPM
 938     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 939 }
 940
 941 check_cpp(){
 942     log check_cpp "$@"
 943     cat > $TMPC
 944     log_file $TMPC
 945     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 946 }
 947
 948 as_o(){
 949     eval printf '%s\\n' $AS_O
 950 }
 951
 952 check_as(){
 953     log check_as "$@"
 954     cat > $TMPS
 955     log_file $TMPS
 956     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 957 }
 958
 959 check_inline_asm(){
 960     log check_inline_asm "$@"
 961     name="$1"
 962     code="$2"
 963     shift 2
 964     disable $name
 965     check_cc "$@" <<EOF && enable $name
 966 void foo(void){ __asm__ volatile($code); }
 967 EOF
 968 }
 969
 970 check_inline_asm_flags(){
 971     log check_inline_asm_flags "$@"
 972     name="$1"
 973     code="$2"
 974     flags=''
 975     shift 2
 976     while [ "$1" != "" ]; do
 977       append flags $1
 978       shift
 979     done;
 980     disable $name
 981     cat > $TMPC <<EOF
 982 void foo(void){ __asm__ volatile($code); }
 983 EOF
 984     log_file $TMPC
 985     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 986     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 987 }
 988
 989 check_insn(){
 990     log check_insn "$@"
 991     check_inline_asm ${1}_inline "\"$2\""
 992     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 993 }
 994
 995 check_x86asm(){
 996     log check_x86asm "$@"
 997     echo "$1" > $TMPS
 998     log_file $TMPS
 999     shift 1
1000     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 check_ld(){
1008     log check_ld "$@"
1009     type=$1
1010     shift 1
1011     flags=$(filter_out '-l*|*.so' $@)
1012     libs=$(filter '-l*|*.so' $@)
1013     check_$type $($cflags_filter $flags) || return
1014     flags=$($ldflags_filter $flags)
1015     libs=$($ldflags_filter $libs)
1016     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1017 }
1018
1019 print_include(){
1020     hdr=$1
1021     test "${hdr%.h}" = "${hdr}" &&
1022         echo "#include $hdr"    ||
1023         echo "#include <$hdr>"
1024 }
1025
1026 check_code(){
1027     log check_code "$@"
1028     check=$1
1029     headers=$2
1030     code=$3
1031     shift 3
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         echo "int main(void) { $code; return 0; }"
1037     } | check_$check "$@"
1038 }
1039
1040 check_cppflags(){
1041     log check_cppflags "$@"
1042     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1043 #include <stdlib.h>
1044 EOF
1045 }
1046
1047 test_cflags(){
1048     log test_cflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_cflags(){
1056     log check_cflags "$@"
1057     test_cflags "$@" && add_cflags "$@"
1058 }
1059
1060 check_cxxflags(){
1061     log check_cxxflags "$@"
1062     set -- $($cflags_filter "$@")
1063     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1064 int x;
1065 EOF
1066 }
1067
1068 test_objcflags(){
1069     log test_objcflags "$@"
1070     set -- $($objcflags_filter "$@")
1071     check_objcc "$@" <<EOF
1072 int x;
1073 EOF
1074 }
1075
1076 check_objcflags(){
1077     log check_objcflags "$@"
1078     test_objcflags "$@" && add_objcflags "$@"
1079 }
1080
1081 test_ldflags(){
1082     log test_ldflags "$@"
1083     check_ld "cc" "$@" <<EOF
1084 int main(void){ return 0; }
1085 EOF
1086 }
1087
1088 check_ldflags(){
1089     log check_ldflags "$@"
1090     test_ldflags "$@" && add_ldflags "$@"
1091 }
1092
1093 test_stripflags(){
1094     log test_stripflags "$@"
1095     # call check_cc to get a fresh TMPO
1096     check_cc <<EOF
1097 int main(void) { return 0; }
1098 EOF
1099     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1100 }
1101
1102 check_stripflags(){
1103     log check_stripflags "$@"
1104     test_stripflags "$@" && add_stripflags "$@"
1105 }
1106
1107 check_header(){
1108     log check_header "$@"
1109     header=$1
1110     shift
1111     disable_sanitized $header
1112     check_cpp "$@" <<EOF && enable_sanitized $header
1113 #include <$header>
1114 int x;
1115 EOF
1116 }
1117
1118 check_header_objcc(){
1119     log check_header_objcc "$@"
1120     rm -f -- "$TMPO"
1121     header=$1
1122     shift
1123     disable_sanitized $header
1124     {
1125        echo "#include <$header>"
1126        echo "int main(void) { return 0; }"
1127     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1128 }
1129
1130 check_apple_framework(){
1131     log check_apple_framework "$@"
1132     framework="$1"
1133     name="$(tolower $framework)"
1134     header="${framework}/${framework}.h"
1135     disable $name
1136     check_header_objcc $header &&
1137         enable $name && eval ${name}_extralibs='"-framework $framework"'
1138 }
1139
1140 check_func(){
1141     log check_func "$@"
1142     func=$1
1143     shift
1144     disable $func
1145     check_ld "cc" "$@" <<EOF && enable $func
1146 extern int $func();
1147 int main(void){ $func(); }
1148 EOF
1149 }
1150
1151 check_complexfunc(){
1152     log check_complexfunc "$@"
1153     func=$1
1154     narg=$2
1155     shift 2
1156     test $narg = 2 && args="f, g" || args="f * I"
1157     disable $func
1158     check_ld "cc" "$@" <<EOF && enable $func
1159 #include <complex.h>
1160 #include <math.h>
1161 float foo(complex float f, complex float g) { return $func($args); }
1162 int main(void){ return (int) foo; }
1163 EOF
1164 }
1165
1166 check_mathfunc(){
1167     log check_mathfunc "$@"
1168     func=$1
1169     narg=$2
1170     shift 2
1171     test $narg = 2 && args="f, g" || args="f"
1172     disable $func
1173     check_ld "cc" "$@" <<EOF && enable $func
1174 #include <math.h>
1175 float foo(float f, float g) { return $func($args); }
1176 int main(void){ return (int) foo; }
1177 EOF
1178 }
1179
1180 check_func_headers(){
1181     log check_func_headers "$@"
1182     headers=$1
1183     funcs=$2
1184     shift 2
1185     {
1186         for hdr in $headers; do
1187             print_include $hdr
1188         done
1189         echo "#include <stdint.h>"
1190         for func in $funcs; do
1191             echo "long check_$func(void) { return (long) $func; }"
1192         done
1193         echo "int main(void) { int ret = 0;"
1194         # LTO could optimize out the test functions without this
1195         for func in $funcs; do
1196             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1197         done
1198         echo "return ret; }"
1199     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1200 }
1201
1202 check_class_headers_cpp(){
1203     log check_class_headers_cpp "$@"
1204     headers=$1
1205     classes=$2
1206     shift 2
1207     {
1208         for hdr in $headers; do
1209             echo "#include <$hdr>"
1210         done
1211         echo "int main(void) { "
1212         i=1
1213         for class in $classes; do
1214             echo "$class obj$i;"
1215             i=$(expr $i + 1)
1216         done
1217         echo "return 0; }"
1218     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1219 }
1220
1221 check_cpp_condition(){
1222     log check_cpp_condition "$@"
1223     header=$1
1224     condition=$2
1225     shift 2
1226     check_cpp "$@" <<EOF
1227 #include <$header>
1228 #if !($condition)
1229 #error "unsatisfied condition: $condition"
1230 #endif
1231 EOF
1232 }
1233
1234 test_cflags_cc(){
1235     log test_cflags_cc "$@"
1236     flags=$1
1237     header=$2
1238     condition=$3
1239     shift 3
1240     set -- $($cflags_filter "$flags")
1241     check_cc "$@" <<EOF
1242 #include <$header>
1243 #if !($condition)
1244 #error "unsatisfied condition: $condition"
1245 #endif
1246 EOF
1247 }
1248
1249 check_lib(){
1250     log check_lib "$@"
1251     name="$1"
1252     headers="$2"
1253     funcs="$3"
1254     shift 3
1255     disable $name
1256     check_func_headers "$headers" "$funcs" "$@" &&
1257         enable $name && eval ${name}_extralibs="\$@"
1258 }
1259
1260 check_lib_cpp(){
1261     log check_lib_cpp "$@"
1262     name="$1"
1263     headers="$2"
1264     classes="$3"
1265     shift 3
1266     disable $name
1267     check_class_headers_cpp "$headers" "$classes" "$@" &&
1268         enable $name && eval ${name}_extralibs="\$@"
1269 }
1270
1271 check_pkg_config(){
1272     log check_pkg_config "$@"
1273     name="$1"
1274     pkg_version="$2"
1275     pkg="${2%% *}"
1276     headers="$3"
1277     funcs="$4"
1278     shift 4
1279     disable $name
1280     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1281     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1282     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1283     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1284         enable $name &&
1285         set_sanitized "${name}_cflags"    $pkg_cflags &&
1286         set_sanitized "${name}_extralibs" $pkg_libs
1287 }
1288
1289 check_exec(){
1290     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1291 }
1292
1293 check_exec_crash(){
1294     log check_exec_crash "$@"
1295     code=$(cat)
1296
1297     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1298     # are safe but may not be available everywhere.  Thus we use
1299     # raise(SIGTERM) instead.  The check is run in a subshell so we
1300     # can redirect the "Terminated" message from the shell.  SIGBUS
1301     # is not defined by standard C so it is used conditionally.
1302
1303     (check_exec "$@") >> $logfile 2>&1 <<EOF
1304 #include <signal.h>
1305 static void sighandler(int sig){
1306     raise(SIGTERM);
1307 }
1308 int foo(void){
1309     $code
1310 }
1311 int (*func_ptr)(void) = foo;
1312 int main(void){
1313     signal(SIGILL, sighandler);
1314     signal(SIGFPE, sighandler);
1315     signal(SIGSEGV, sighandler);
1316 #ifdef SIGBUS
1317     signal(SIGBUS, sighandler);
1318 #endif
1319     return func_ptr();
1320 }
1321 EOF
1322 }
1323
1324 check_type(){
1325     log check_type "$@"
1326     headers=$1
1327     type=$2
1328     shift 2
1329     disable_sanitized "$type"
1330     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1331 }
1332
1333 check_struct(){
1334     log check_struct "$@"
1335     headers=$1
1336     struct=$2
1337     member=$3
1338     shift 3
1339     disable_sanitized "${struct}_${member}"
1340     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1341         enable_sanitized "${struct}_${member}"
1342 }
1343
1344 check_builtin(){
1345     log check_builtin "$@"
1346     name=$1
1347     headers=$2
1348     builtin=$3
1349     shift 3
1350     disable "$name"
1351     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1352 }
1353
1354 check_compile_assert(){
1355     log check_compile_assert "$@"
1356     name=$1
1357     headers=$2
1358     condition=$3
1359     shift 3
1360     disable "$name"
1361     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1362 }
1363
1364 require(){
1365     log require "$@"
1366     name_version="$1"
1367     name="${1%% *}"
1368     headers="$2"
1369     func="$3"
1370     shift 3
1371     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1372 }
1373
1374 require_cpp(){
1375     name="$1"
1376     headers="$2"
1377     classes="$3"
1378     shift 3
1379     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1380 }
1381
1382 require_header(){
1383     log require "$@"
1384     header="$1"
1385     shift
1386     check_header "$header" "$@" || die "ERROR: $header header not found"
1387 }
1388
1389 require_cpp_condition(){
1390     log require "$@"
1391     header="$1"
1392     condition="$2"
1393     shift 2
1394     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1395 }
1396
1397 use_pkg_config(){
1398     log use_pkg_config "$@"
1399     name="$1"
1400     check_pkg_config "$@" || return 1
1401     add_cflags    $(get_sanitized "${name}_cflags")
1402 }
1403
1404 require_pkg_config(){
1405     log require_pkg_config "$@"
1406     pkg_version="$2"
1407     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1408 }
1409
1410 hostcc_e(){
1411     eval printf '%s\\n' $HOSTCC_E
1412 }
1413
1414 hostcc_o(){
1415     eval printf '%s\\n' $HOSTCC_O
1416 }
1417
1418 check_host_cc(){
1419     log check_host_cc "$@"
1420     cat > $TMPC
1421     log_file $TMPC
1422     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1423 }
1424
1425 check_host_cpp(){
1426     log check_host_cpp "$@"
1427     cat > $TMPC
1428     log_file $TMPC
1429     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1430 }
1431
1432 check_host_cppflags(){
1433     log check_host_cppflags "$@"
1434     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1435 #include <stdlib.h>
1436 EOF
1437 }
1438
1439 check_host_cflags(){
1440     log check_host_cflags "$@"
1441     set -- $($host_cflags_filter "$@")
1442     check_host_cc "$@" <<EOF && append host_cflags "$@"
1443 int x;
1444 EOF
1445 }
1446
1447 check_host_cpp_condition(){
1448     log check_host_cpp_condition "$@"
1449     header=$1
1450     condition=$2
1451     shift 2
1452     check_host_cpp "$@" <<EOF
1453 #include <$header>
1454 #if !($condition)
1455 #error "unsatisfied condition: $condition"
1456 #endif
1457 EOF
1458 }
1459
1460 cp_if_changed(){
1461     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1462     mkdir -p "$(dirname $2)"
1463     cp -f "$1" "$2"
1464 }
1465
1466 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1467 # system-dependent things.
1468
1469 AVCODEC_COMPONENTS="
1470     bsfs
1471     decoders
1472     encoders
1473     hwaccels
1474     parsers
1475 "
1476
1477 AVDEVICE_COMPONENTS="
1478     indevs
1479     outdevs
1480 "
1481
1482 AVFILTER_COMPONENTS="
1483     filters
1484 "
1485
1486 AVFORMAT_COMPONENTS="
1487     demuxers
1488     muxers
1489     protocols
1490 "
1491
1492 AVRESAMPLE_COMPONENTS=""
1493
1494 AVUTIL_COMPONENTS=""
1495
1496 COMPONENT_LIST="
1497     $AVCODEC_COMPONENTS
1498     $AVDEVICE_COMPONENTS
1499     $AVFILTER_COMPONENTS
1500     $AVFORMAT_COMPONENTS
1501     $AVRESAMPLE_COMPONENTS
1502     $AVUTIL_COMPONENTS
1503 "
1504
1505 EXAMPLE_LIST="
1506     avio_dir_cmd_example
1507     avio_reading_example
1508     decode_audio_example
1509     decode_video_example
1510     demuxing_decoding_example
1511     encode_audio_example
1512     encode_video_example
1513     extract_mvs_example
1514     filter_audio_example
1515     filtering_audio_example
1516     filtering_video_example
1517     http_multiclient_example
1518     hw_decode_example
1519     metadata_example
1520     muxing_example
1521     qsvdec_example
1522     remuxing_example
1523     resampling_audio_example
1524     scaling_video_example
1525     transcode_aac_example
1526     transcoding_example
1527 "
1528
1529 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1530     alsa
1531     appkit
1532     avfoundation
1533     bzlib
1534     coreimage
1535     iconv
1536     libxcb
1537     libxcb_shm
1538     libxcb_shape
1539     libxcb_xfixes
1540     lzma
1541     schannel
1542     sdl2
1543     securetransport
1544     sndio
1545     xlib
1546     zlib
1547 "
1548
1549 EXTERNAL_LIBRARY_GPL_LIST="
1550     avisynth
1551     frei0r
1552     libcdio
1553     librubberband
1554     libvidstab
1555     libx264
1556     libx265
1557     libxavs
1558     libxvid
1559 "
1560
1561 EXTERNAL_LIBRARY_NONFREE_LIST="
1562     decklink
1563     libndi_newtek
1564     libfdk_aac
1565     openssl
1566 "
1567
1568 EXTERNAL_LIBRARY_VERSION3_LIST="
1569     gmp
1570     libopencore_amrnb
1571     libopencore_amrwb
1572     libvmaf
1573     libvo_amrwbenc
1574     rkmpp
1575 "
1576
1577 EXTERNAL_LIBRARY_GPLV3_LIST="
1578     libsmbclient
1579 "
1580
1581 EXTERNAL_LIBRARY_LIST="
1582     $EXTERNAL_LIBRARY_GPL_LIST
1583     $EXTERNAL_LIBRARY_NONFREE_LIST
1584     $EXTERNAL_LIBRARY_VERSION3_LIST
1585     $EXTERNAL_LIBRARY_GPLV3_LIST
1586     chromaprint
1587     gcrypt
1588     gnutls
1589     jni
1590     ladspa
1591     libass
1592     libbluray
1593     libbs2b
1594     libcaca
1595     libcelt
1596     libdc1394
1597     libdrm
1598     libflite
1599     libfontconfig
1600     libfreetype
1601     libfribidi
1602     libgme
1603     libgsm
1604     libiec61883
1605     libilbc
1606     libjack
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     libvorbis
1630     libvpx
1631     libwavpack
1632     libwebp
1633     libxml2
1634     libzimg
1635     libzmq
1636     libzvbi
1637     mediacodec
1638     openal
1639     opencl
1640     opengl
1641 "
1642
1643 HWACCEL_AUTODETECT_LIBRARY_LIST="
1644     audiotoolbox
1645     crystalhd
1646     cuda
1647     cuvid
1648     d3d11va
1649     dxva2
1650     nvenc
1651     vaapi
1652     vdpau
1653     videotoolbox
1654     v4l2_m2m
1655     xvmc
1656 "
1657
1658 # catchall list of things that require external libs to link
1659 EXTRALIBS_LIST="
1660     cpu_init
1661     cws2fws
1662 "
1663
1664 HWACCEL_LIBRARY_NONFREE_LIST="
1665     cuda_sdk
1666     libnpp
1667 "
1668
1669 HWACCEL_LIBRARY_LIST="
1670     $HWACCEL_LIBRARY_NONFREE_LIST
1671     libmfx
1672     mmal
1673     omx
1674 "
1675
1676 DOCUMENT_LIST="
1677     doc
1678     htmlpages
1679     manpages
1680     podpages
1681     txtpages
1682 "
1683
1684 FEATURE_LIST="
1685     ftrapv
1686     gray
1687     hardcoded_tables
1688     omx_rpi
1689     runtime_cpudetect
1690     safe_bitstream_reader
1691     shared
1692     small
1693     static
1694     swscale_alpha
1695 "
1696
1697 LIBRARY_LIST="
1698     avcodec
1699     avdevice
1700     avfilter
1701     avformat
1702     avresample
1703     avutil
1704     postproc
1705     swresample
1706     swscale
1707 "
1708
1709 LICENSE_LIST="
1710     gpl
1711     nonfree
1712     version3
1713 "
1714
1715 PROGRAM_LIST="
1716     ffplay
1717     ffprobe
1718     ffserver
1719     ffmpeg
1720 "
1721
1722 SUBSYSTEM_LIST="
1723     dct
1724     dwt
1725     error_resilience
1726     faan
1727     fast_unaligned
1728     fft
1729     lsp
1730     lzo
1731     mdct
1732     pixelutils
1733     network
1734     rdft
1735 "
1736
1737 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1738 CONFIG_LIST="
1739     $DOCUMENT_LIST
1740     $EXAMPLE_LIST
1741     $EXTERNAL_LIBRARY_LIST
1742     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1743     $HWACCEL_LIBRARY_LIST
1744     $HWACCEL_AUTODETECT_LIBRARY_LIST
1745     $FEATURE_LIST
1746     $LICENSE_LIST
1747     $LIBRARY_LIST
1748     $PROGRAM_LIST
1749     $SUBSYSTEM_LIST
1750     autodetect
1751     fontconfig
1752     linux_perf
1753     memory_poisoning
1754     neon_clobber_test
1755     ossfuzz
1756     pic
1757     thumb
1758     valgrind_backtrace
1759     xmm_clobber_test
1760     $COMPONENT_LIST
1761 "
1762
1763 THREADS_LIST="
1764     pthreads
1765     os2threads
1766     w32threads
1767 "
1768
1769 ATOMICS_LIST="
1770     atomics_gcc
1771     atomics_suncc
1772     atomics_win32
1773 "
1774
1775 AUTODETECT_LIBS="
1776     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1777     $HWACCEL_AUTODETECT_LIBRARY_LIST
1778     $THREADS_LIST
1779 "
1780
1781 ARCH_LIST="
1782     aarch64
1783     alpha
1784     arm
1785     avr32
1786     avr32_ap
1787     avr32_uc
1788     bfin
1789     ia64
1790     m68k
1791     mips
1792     mips64
1793     parisc
1794     ppc
1795     ppc64
1796     s390
1797     sh4
1798     sparc
1799     sparc64
1800     tilegx
1801     tilepro
1802     tomi
1803     x86
1804     x86_32
1805     x86_64
1806 "
1807
1808 ARCH_EXT_LIST_ARM="
1809     armv5te
1810     armv6
1811     armv6t2
1812     armv8
1813     neon
1814     vfp
1815     vfpv3
1816     setend
1817 "
1818
1819 ARCH_EXT_LIST_MIPS="
1820     mipsfpu
1821     mips32r2
1822     mips32r5
1823     mips64r2
1824     mips32r6
1825     mips64r6
1826     mipsdsp
1827     mipsdspr2
1828     msa
1829 "
1830
1831 ARCH_EXT_LIST_LOONGSON="
1832     loongson2
1833     loongson3
1834     mmi
1835 "
1836
1837 ARCH_EXT_LIST_X86_SIMD="
1838     aesni
1839     amd3dnow
1840     amd3dnowext
1841     avx
1842     avx2
1843     fma3
1844     fma4
1845     mmx
1846     mmxext
1847     sse
1848     sse2
1849     sse3
1850     sse4
1851     sse42
1852     ssse3
1853     xop
1854 "
1855
1856 ARCH_EXT_LIST_PPC="
1857     altivec
1858     dcbzl
1859     ldbrx
1860     power8
1861     ppc4xx
1862     vsx
1863 "
1864
1865 ARCH_EXT_LIST_X86="
1866     $ARCH_EXT_LIST_X86_SIMD
1867     cpunop
1868     i686
1869 "
1870
1871 ARCH_EXT_LIST="
1872     $ARCH_EXT_LIST_ARM
1873     $ARCH_EXT_LIST_PPC
1874     $ARCH_EXT_LIST_X86
1875     $ARCH_EXT_LIST_MIPS
1876     $ARCH_EXT_LIST_LOONGSON
1877 "
1878
1879 ARCH_FEATURES="
1880     aligned_stack
1881     fast_64bit
1882     fast_clz
1883     fast_cmov
1884     local_aligned
1885     simd_align_16
1886     simd_align_32
1887 "
1888
1889 BUILTIN_LIST="
1890     atomic_cas_ptr
1891     machine_rw_barrier
1892     MemoryBarrier
1893     mm_empty
1894     rdtsc
1895     sarestart
1896     sem_timedwait
1897     sync_val_compare_and_swap
1898 "
1899 HAVE_LIST_CMDLINE="
1900     inline_asm
1901     symver
1902     x86asm
1903 "
1904
1905 HAVE_LIST_PUB="
1906     bigendian
1907     fast_unaligned
1908 "
1909
1910 HEADERS_LIST="
1911     arpa_inet_h
1912     asm_types_h
1913     cdio_paranoia_h
1914     cdio_paranoia_paranoia_h
1915     cuda_h
1916     d3d11_h
1917     dispatch_dispatch_h
1918     dev_bktr_ioctl_bt848_h
1919     dev_bktr_ioctl_meteor_h
1920     dev_ic_bt8xx_h
1921     dev_video_bktr_ioctl_bt848_h
1922     dev_video_meteor_ioctl_meteor_h
1923     direct_h
1924     dirent_h
1925     dlfcn_h
1926     dxgidebug_h
1927     dxva_h
1928     ES2_gl_h
1929     gsm_h
1930     io_h
1931     mach_mach_time_h
1932     machine_ioctl_bt848_h
1933     machine_ioctl_meteor_h
1934     malloc_h
1935     opencv2_core_core_c_h
1936     OpenGL_gl3_h
1937     poll_h
1938     soundcard_h
1939     stdatomic_h
1940     sys_mman_h
1941     sys_param_h
1942     sys_resource_h
1943     sys_select_h
1944     sys_soundcard_h
1945     sys_time_h
1946     sys_un_h
1947     sys_videoio_h
1948     termios_h
1949     udplite_h
1950     unistd_h
1951     valgrind_valgrind_h
1952     windows_h
1953     winsock2_h
1954 "
1955
1956 INTRINSICS_LIST="
1957     intrinsics_neon
1958 "
1959
1960 COMPLEX_FUNCS="
1961     cabs
1962     cexp
1963 "
1964
1965 MATH_FUNCS="
1966     atanf
1967     atan2f
1968     cbrt
1969     cbrtf
1970     copysign
1971     cosf
1972     erf
1973     exp2
1974     exp2f
1975     expf
1976     hypot
1977     isfinite
1978     isinf
1979     isnan
1980     ldexpf
1981     llrint
1982     llrintf
1983     log2
1984     log2f
1985     log10f
1986     lrint
1987     lrintf
1988     powf
1989     rint
1990     round
1991     roundf
1992     sinf
1993     trunc
1994     truncf
1995 "
1996
1997 SYSTEM_FUNCS="
1998     access
1999     aligned_malloc
2000     arc4random
2001     clock_gettime
2002     closesocket
2003     CommandLineToArgvW
2004     CoTaskMemFree
2005     CryptGenRandom
2006     fcntl
2007     flt_lim
2008     fork
2009     getaddrinfo
2010     gethrtime
2011     getopt
2012     GetProcessAffinityMask
2013     GetProcessMemoryInfo
2014     GetProcessTimes
2015     getrusage
2016     GetSystemTimeAsFileTime
2017     gettimeofday
2018     glob
2019     glXGetProcAddress
2020     gmtime_r
2021     inet_aton
2022     isatty
2023     kbhit
2024     LoadLibrary
2025     localtime_r
2026     lstat
2027     lzo1x_999_compress
2028     mach_absolute_time
2029     MapViewOfFile
2030     memalign
2031     mkstemp
2032     mmap
2033     mprotect
2034     nanosleep
2035     PeekNamedPipe
2036     posix_memalign
2037     pthread_cancel
2038     sched_getaffinity
2039     SetConsoleTextAttribute
2040     SetConsoleCtrlHandler
2041     setmode
2042     setrlimit
2043     Sleep
2044     strerror_r
2045     sysconf
2046     sysctl
2047     usleep
2048     UTGetOSTypeFromString
2049     VirtualAlloc
2050     wglGetProcAddress
2051 "
2052
2053 TOOLCHAIN_FEATURES="
2054     as_arch_directive
2055     as_fpu_directive
2056     as_func
2057     as_object_arch
2058     asm_mod_q
2059     attribute_may_alias
2060     attribute_packed
2061     blocks_extension
2062     ebp_available
2063     ebx_available
2064     gnu_as
2065     gnu_windres
2066     ibm_asm
2067     inline_asm_direct_symbol_refs
2068     inline_asm_labels
2069     inline_asm_nonlocal_labels
2070     pragma_deprecated
2071     rsync_contimeout
2072     symver_asm_label
2073     symver_gnu_asm
2074     vfp_args
2075     xform_asm
2076     xmm_clobbers
2077 "
2078
2079 TYPES_LIST="
2080     CONDITION_VARIABLE_Ptr
2081     kCMVideoCodecType_HEVC
2082     socklen_t
2083     struct_addrinfo
2084     struct_group_source_req
2085     struct_ip_mreq_source
2086     struct_ipv6_mreq
2087     struct_msghdr_msg_flags
2088     struct_pollfd
2089     struct_rusage_ru_maxrss
2090     struct_sctp_event_subscribe
2091     struct_sockaddr_in6
2092     struct_sockaddr_sa_len
2093     struct_sockaddr_storage
2094     struct_stat_st_mtim_tv_nsec
2095     struct_v4l2_frmivalenum_discrete
2096 "
2097
2098 HAVE_LIST="
2099     $ARCH_EXT_LIST
2100     $(add_suffix _external $ARCH_EXT_LIST)
2101     $(add_suffix _inline   $ARCH_EXT_LIST)
2102     $ARCH_FEATURES
2103     $ATOMICS_LIST
2104     $BUILTIN_LIST
2105     $COMPLEX_FUNCS
2106     $HAVE_LIST_CMDLINE
2107     $HAVE_LIST_PUB
2108     $HEADERS_LIST
2109     $INTRINSICS_LIST
2110     $MATH_FUNCS
2111     $SYSTEM_FUNCS
2112     $THREADS_LIST
2113     $TOOLCHAIN_FEATURES
2114     $TYPES_LIST
2115     atomics_native
2116     dos_paths
2117     libc_msvcrt
2118     makeinfo
2119     makeinfo_html
2120     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2121     perl
2122     pod2man
2123     section_data_rel_ro
2124     texi2html
2125     threads
2126     uwp
2127     vaapi_drm
2128     vaapi_x11
2129     vdpau_x11
2130     winrt
2131 "
2132
2133 # options emitted with CONFIG_ prefix but not available on the command line
2134 CONFIG_EXTRA="
2135     aandcttables
2136     ac3dsp
2137     adts_header
2138     audio_frame_queue
2139     audiodsp
2140     blockdsp
2141     bswapdsp
2142     cabac
2143     cbs
2144     cbs_h264
2145     cbs_h265
2146     cbs_mpeg2
2147     dirac_parse
2148     dvprofile
2149     exif
2150     faandct
2151     faanidct
2152     fdctdsp
2153     flacdsp
2154     fmtconvert
2155     frame_thread_encoder
2156     g722dsp
2157     golomb
2158     gplv3
2159     h263dsp
2160     h264chroma
2161     h264dsp
2162     h264parse
2163     h264pred
2164     h264qpel
2165     hevcparse
2166     hpeldsp
2167     huffman
2168     huffyuvdsp
2169     huffyuvencdsp
2170     idctdsp
2171     iirfilter
2172     mdct15
2173     intrax8
2174     iso_media
2175     ividsp
2176     jpegtables
2177     lgplv3
2178     libx262
2179     llauddsp
2180     llviddsp
2181     llvidencdsp
2182     lpc
2183     lzf
2184     me_cmp
2185     mpeg_er
2186     mpegaudio
2187     mpegaudiodsp
2188     mpegaudioheader
2189     mpegvideo
2190     mpegvideoenc
2191     mss34dsp
2192     pixblockdsp
2193     qpeldsp
2194     qsv
2195     qsvdec
2196     qsvenc
2197     rangecoder
2198     riffdec
2199     riffenc
2200     rtpdec
2201     rtpenc_chain
2202     rv34dsp
2203     sinewin
2204     snappy
2205     srtp
2206     startcode
2207     texturedsp
2208     texturedspenc
2209     tpeldsp
2210     vaapi_1
2211     vaapi_encode
2212     vc1dsp
2213     videodsp
2214     vp3dsp
2215     vp56dsp
2216     vp8dsp
2217     wma_freqs
2218     wmv2dsp
2219 "
2220
2221 CMDLINE_SELECT="
2222     $ARCH_EXT_LIST
2223     $CONFIG_LIST
2224     $HAVE_LIST_CMDLINE
2225     $THREADS_LIST
2226     asm
2227     cross_compile
2228     debug
2229     extra_warnings
2230     logging
2231     lto
2232     optimizations
2233     rpath
2234     stripping
2235 "
2236
2237 PATHS_LIST="
2238     bindir
2239     datadir
2240     docdir
2241     incdir
2242     libdir
2243     mandir
2244     pkgconfigdir
2245     prefix
2246     shlibdir
2247     install_name_dir
2248 "
2249
2250 CMDLINE_SET="
2251     $PATHS_LIST
2252     ar
2253     arch
2254     as
2255     assert_level
2256     build_suffix
2257     cc
2258     objcc
2259     cpu
2260     cross_prefix
2261     custom_allocator
2262     cxx
2263     dep_cc
2264     doxygen
2265     env
2266     extra_version
2267     gas
2268     host_cc
2269     host_cflags
2270     host_extralibs
2271     host_ld
2272     host_ldflags
2273     host_os
2274     ignore_tests
2275     install
2276     ld
2277     ln_s
2278     logfile
2279     malloc_prefix
2280     nm
2281     optflags
2282     nvccflags
2283     pkg_config
2284     pkg_config_flags
2285     progs_suffix
2286     random_seed
2287     ranlib
2288     samples
2289     strip
2290     sws_max_filter_size
2291     sysinclude
2292     sysroot
2293     target_exec
2294     target_os
2295     target_path
2296     target_samples
2297     tempprefix
2298     toolchain
2299     valgrind
2300     x86asmexe
2301 "
2302
2303 CMDLINE_APPEND="
2304     extra_cflags
2305     extra_cxxflags
2306     extra_objcflags
2307     host_cppflags
2308 "
2309
2310 # code dependency declarations
2311
2312 # architecture extensions
2313
2314 armv5te_deps="arm"
2315 armv6_deps="arm"
2316 armv6t2_deps="arm"
2317 armv8_deps="aarch64"
2318 neon_deps_any="aarch64 arm"
2319 intrinsics_neon_deps="neon"
2320 vfp_deps_any="aarch64 arm"
2321 vfpv3_deps="vfp"
2322 setend_deps="arm"
2323
2324 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2325
2326 altivec_deps="ppc"
2327 dcbzl_deps="ppc"
2328 ldbrx_deps="ppc"
2329 ppc4xx_deps="ppc"
2330 vsx_deps="altivec"
2331 power8_deps="vsx"
2332
2333 loongson2_deps="mips"
2334 loongson3_deps="mips"
2335 mips32r2_deps="mips"
2336 mips32r5_deps="mips"
2337 mips32r6_deps="mips"
2338 mips64r2_deps="mips"
2339 mips64r6_deps="mips"
2340 mipsfpu_deps="mips"
2341 mipsdsp_deps="mips"
2342 mipsdspr2_deps="mips"
2343 mmi_deps="mips"
2344 msa_deps="mipsfpu"
2345
2346 cpunop_deps="i686"
2347 x86_64_select="i686"
2348 x86_64_suggest="fast_cmov"
2349
2350 amd3dnow_deps="mmx"
2351 amd3dnowext_deps="amd3dnow"
2352 i686_deps="x86"
2353 mmx_deps="x86"
2354 mmxext_deps="mmx"
2355 sse_deps="mmxext"
2356 sse2_deps="sse"
2357 sse3_deps="sse2"
2358 ssse3_deps="sse3"
2359 sse4_deps="ssse3"
2360 sse42_deps="sse4"
2361 aesni_deps="sse42"
2362 avx_deps="sse42"
2363 xop_deps="avx"
2364 fma3_deps="avx"
2365 fma4_deps="avx"
2366 avx2_deps="avx"
2367
2368 mmx_external_deps="x86asm"
2369 mmx_inline_deps="inline_asm x86"
2370 mmx_suggest="mmx_external mmx_inline"
2371
2372 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2373     eval dep=\$${ext}_deps
2374     eval ${ext}_external_deps='"${dep}_external"'
2375     eval ${ext}_inline_deps='"${dep}_inline"'
2376     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2377 done
2378
2379 aligned_stack_if_any="aarch64 ppc x86"
2380 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2381 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2382 fast_unaligned_if_any="aarch64 ppc x86"
2383 simd_align_16_if_any="altivec neon sse"
2384 simd_align_32_if_any="avx"
2385
2386 # system capabilities
2387 symver_if_any="symver_asm_label symver_gnu_asm"
2388 valgrind_backtrace_conflict="optimizations"
2389 valgrind_backtrace_deps="valgrind_valgrind_h"
2390
2391 # threading support
2392 atomics_gcc_if="sync_val_compare_and_swap"
2393 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2394 atomics_win32_if="MemoryBarrier"
2395 atomics_native_if_any="$ATOMICS_LIST"
2396 w32threads_deps="atomics_native"
2397 threads_if_any="$THREADS_LIST"
2398
2399 # subsystems
2400 cbs_h264_select="cbs golomb"
2401 cbs_h265_select="cbs golomb"
2402 cbs_mpeg2_select="cbs"
2403 dct_select="rdft"
2404 dirac_parse_select="golomb"
2405 error_resilience_select="me_cmp"
2406 faandct_deps="faan"
2407 faandct_select="fdctdsp"
2408 faanidct_deps="faan"
2409 faanidct_select="idctdsp"
2410 h264dsp_select="startcode"
2411 hevcparse_select="golomb"
2412 frame_thread_encoder_deps="encoders threads"
2413 intrax8_select="blockdsp idctdsp"
2414 mdct_select="fft"
2415 mdct15_select="fft"
2416 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2417 mpeg_er_select="error_resilience"
2418 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2419 mpegaudiodsp_select="dct"
2420 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2421 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2422 vc1dsp_select="h264chroma qpeldsp startcode"
2423 rdft_select="fft"
2424
2425 # decoders / encoders
2426 aac_decoder_select="adts_header mdct15 mdct sinewin"
2427 aac_fixed_decoder_select="mdct sinewin"
2428 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2429 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2430 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2431 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2432 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2433 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2434 adpcm_g722_decoder_select="g722dsp"
2435 adpcm_g722_encoder_select="g722dsp"
2436 aic_decoder_select="golomb idctdsp"
2437 alac_encoder_select="lpc"
2438 als_decoder_select="bswapdsp"
2439 amrnb_decoder_select="lsp"
2440 amrwb_decoder_select="lsp"
2441 amv_decoder_select="sp5x_decoder exif"
2442 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2443 ape_decoder_select="bswapdsp llauddsp"
2444 apng_decoder_select="zlib"
2445 apng_encoder_select="llvidencdsp zlib"
2446 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2447 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2448 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2449 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2450 atrac1_decoder_select="mdct sinewin"
2451 atrac3_decoder_select="mdct"
2452 atrac3p_decoder_select="mdct sinewin"
2453 avrn_decoder_select="exif jpegtables"
2454 bink_decoder_select="blockdsp hpeldsp"
2455 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2456 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2457 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2458 clearvideo_decoder_select="idctdsp"
2459 cllc_decoder_select="bswapdsp"
2460 comfortnoise_encoder_select="lpc"
2461 cook_decoder_select="audiodsp mdct sinewin"
2462 cscd_decoder_select="lzo"
2463 cscd_decoder_suggest="zlib"
2464 dca_decoder_select="mdct"
2465 dds_decoder_select="texturedsp"
2466 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2467 dnxhd_decoder_select="blockdsp idctdsp"
2468 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2469 dolby_e_decoder_select="mdct"
2470 dvvideo_decoder_select="dvprofile idctdsp"
2471 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2472 dxa_decoder_select="zlib"
2473 dxv_decoder_select="lzf texturedsp"
2474 eac3_decoder_select="ac3_decoder"
2475 eac3_encoder_select="ac3_encoder"
2476 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2477 eatgq_decoder_select="aandcttables"
2478 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2479 exr_decoder_select="zlib"
2480 ffv1_decoder_select="rangecoder"
2481 ffv1_encoder_select="rangecoder"
2482 ffvhuff_decoder_select="huffyuv_decoder"
2483 ffvhuff_encoder_select="huffyuv_encoder"
2484 fic_decoder_select="golomb"
2485 flac_decoder_select="flacdsp"
2486 flac_encoder_select="bswapdsp flacdsp lpc"
2487 flashsv2_decoder_select="zlib"
2488 flashsv2_encoder_select="zlib"
2489 flashsv_decoder_select="zlib"
2490 flashsv_encoder_select="zlib"
2491 flv_decoder_select="h263_decoder"
2492 flv_encoder_select="h263_encoder"
2493 fourxm_decoder_select="blockdsp bswapdsp"
2494 fraps_decoder_select="bswapdsp huffman"
2495 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2496 g729_decoder_select="audiodsp"
2497 h261_decoder_select="mpegvideo"
2498 h261_encoder_select="aandcttables mpegvideoenc"
2499 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2500 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2501 h263i_decoder_select="h263_decoder"
2502 h263p_decoder_select="h263_decoder"
2503 h263p_encoder_select="h263_encoder"
2504 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2505 h264_decoder_suggest="error_resilience"
2506 hap_decoder_select="snappy texturedsp"
2507 hap_encoder_deps="libsnappy"
2508 hap_encoder_select="texturedspenc"
2509 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2510 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2511 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2512 iac_decoder_select="imc_decoder"
2513 imc_decoder_select="bswapdsp fft mdct sinewin"
2514 indeo3_decoder_select="hpeldsp"
2515 indeo4_decoder_select="ividsp"
2516 indeo5_decoder_select="ividsp"
2517 interplay_video_decoder_select="hpeldsp"
2518 jpegls_decoder_select="mjpeg_decoder"
2519 jv_decoder_select="blockdsp"
2520 lagarith_decoder_select="llviddsp"
2521 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2522 magicyuv_decoder_select="llviddsp"
2523 magicyuv_encoder_select="llvidencdsp"
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 mpegvideo_decoder_select="mpegvideo"
2546 mpeg1video_decoder_select="mpegvideo"
2547 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2548 mpeg2video_decoder_select="mpegvideo"
2549 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2550 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2551 mpeg4_encoder_select="h263_encoder"
2552 msa1_decoder_select="mss34dsp"
2553 mscc_decoder_select="zlib"
2554 msmpeg4v1_decoder_select="h263_decoder"
2555 msmpeg4v2_decoder_select="h263_decoder"
2556 msmpeg4v2_encoder_select="h263_encoder"
2557 msmpeg4v3_decoder_select="h263_decoder"
2558 msmpeg4v3_encoder_select="h263_encoder"
2559 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2560 mts2_decoder_select="mss34dsp"
2561 mxpeg_decoder_select="mjpeg_decoder"
2562 nellymoser_decoder_select="mdct sinewin"
2563 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2564 nuv_decoder_select="idctdsp lzo"
2565 on2avc_decoder_select="mdct"
2566 opus_decoder_deps="swresample"
2567 opus_decoder_select="mdct15"
2568 opus_encoder_select="audio_frame_queue mdct15"
2569 png_decoder_select="zlib"
2570 png_encoder_select="llvidencdsp zlib"
2571 prores_decoder_select="blockdsp idctdsp"
2572 prores_encoder_select="fdctdsp"
2573 qcelp_decoder_select="lsp"
2574 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2575 ra_144_decoder_select="audiodsp"
2576 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2577 ralf_decoder_select="golomb"
2578 rawvideo_decoder_select="bswapdsp"
2579 rscc_decoder_select="zlib"
2580 rtjpeg_decoder_select="me_cmp"
2581 rv10_decoder_select="h263_decoder"
2582 rv10_encoder_select="h263_encoder"
2583 rv20_decoder_select="h263_decoder"
2584 rv20_encoder_select="h263_encoder"
2585 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2586 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2587 screenpresso_decoder_select="zlib"
2588 shorten_decoder_select="bswapdsp"
2589 sipr_decoder_select="lsp"
2590 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2591 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2592 sonic_decoder_select="golomb rangecoder"
2593 sonic_encoder_select="golomb rangecoder"
2594 sonic_ls_encoder_select="golomb rangecoder"
2595 sp5x_decoder_select="mjpeg_decoder"
2596 srgc_decoder_select="zlib"
2597 svq1_decoder_select="hpeldsp"
2598 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2599 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2600 svq3_decoder_suggest="zlib"
2601 tak_decoder_select="audiodsp"
2602 tdsc_decoder_select="zlib mjpeg_decoder"
2603 theora_decoder_select="vp3_decoder"
2604 thp_decoder_select="mjpeg_decoder"
2605 tiff_decoder_suggest="zlib lzma"
2606 tiff_encoder_suggest="zlib"
2607 truehd_decoder_select="mlp_parser"
2608 truehd_encoder_select="lpc"
2609 truemotion2_decoder_select="bswapdsp"
2610 truespeech_decoder_select="bswapdsp"
2611 tscc_decoder_select="zlib"
2612 twinvq_decoder_select="mdct lsp sinewin"
2613 txd_decoder_select="texturedsp"
2614 utvideo_decoder_select="bswapdsp llviddsp"
2615 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2616 vble_decoder_select="llviddsp"
2617 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2618 vc1image_decoder_select="vc1_decoder"
2619 vorbis_decoder_select="mdct"
2620 vorbis_encoder_select="mdct"
2621 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2622 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2623 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2624 vp6a_decoder_select="vp6_decoder"
2625 vp6f_decoder_select="vp6_decoder"
2626 vp7_decoder_select="h264pred videodsp vp8dsp"
2627 vp8_decoder_select="h264pred videodsp vp8dsp"
2628 vp9_decoder_select="videodsp vp9_parser"
2629 webp_decoder_select="vp8_decoder exif"
2630 wmalossless_decoder_select="llauddsp"
2631 wmapro_decoder_select="mdct sinewin wma_freqs"
2632 wmav1_decoder_select="mdct sinewin wma_freqs"
2633 wmav1_encoder_select="mdct sinewin wma_freqs"
2634 wmav2_decoder_select="mdct sinewin wma_freqs"
2635 wmav2_encoder_select="mdct sinewin wma_freqs"
2636 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2637 wmv1_decoder_select="h263_decoder"
2638 wmv1_encoder_select="h263_encoder"
2639 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2640 wmv2_encoder_select="h263_encoder wmv2dsp"
2641 wmv3_decoder_select="vc1_decoder"
2642 wmv3image_decoder_select="wmv3_decoder"
2643 xma1_decoder_select="wmapro_decoder"
2644 xma2_decoder_select="wmapro_decoder"
2645 zerocodec_decoder_select="zlib"
2646 zlib_decoder_select="zlib"
2647 zlib_encoder_select="zlib"
2648 zmbv_decoder_select="zlib"
2649 zmbv_encoder_select="zlib"
2650
2651 # hardware accelerators
2652 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2653 cuda_deps_any="libdl LoadLibrary"
2654 cuvid_deps="cuda"
2655 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2656 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2657 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2658 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2659 xvmc_deps="X11_extensions_XvMClib_h"
2660
2661 h263_vaapi_hwaccel_deps="vaapi"
2662 h263_vaapi_hwaccel_select="h263_decoder"
2663 h263_videotoolbox_hwaccel_deps="videotoolbox"
2664 h263_videotoolbox_hwaccel_select="h263_decoder"
2665 h264_cuvid_hwaccel_deps="cuda cuvid"
2666 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2667 h264_d3d11va_hwaccel_deps="d3d11va"
2668 h264_d3d11va_hwaccel_select="h264_decoder"
2669 h264_d3d11va2_hwaccel_deps="d3d11va"
2670 h264_d3d11va2_hwaccel_select="h264_decoder"
2671 h264_dxva2_hwaccel_deps="dxva2"
2672 h264_dxva2_hwaccel_select="h264_decoder"
2673 h264_mediacodec_hwaccel_deps="mediacodec"
2674 h264_mmal_hwaccel_deps="mmal"
2675 h264_qsv_hwaccel_deps="libmfx"
2676 h264_vaapi_hwaccel_deps="vaapi"
2677 h264_vaapi_hwaccel_select="h264_decoder"
2678 h264_vdpau_hwaccel_deps="vdpau"
2679 h264_vdpau_hwaccel_select="h264_decoder"
2680 h264_videotoolbox_hwaccel_deps="videotoolbox"
2681 h264_videotoolbox_hwaccel_select="h264_decoder"
2682 hevc_cuvid_hwaccel_deps="cuda cuvid"
2683 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2684 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2685 hevc_d3d11va_hwaccel_select="hevc_decoder"
2686 hevc_mediacodec_hwaccel_deps="mediacodec"
2687 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2688 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2689 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2690 hevc_dxva2_hwaccel_select="hevc_decoder"
2691 hevc_qsv_hwaccel_deps="libmfx"
2692 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2693 hevc_vaapi_hwaccel_select="hevc_decoder"
2694 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2695 hevc_vdpau_hwaccel_select="hevc_decoder"
2696 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2697 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2698 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2699 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2700 mpeg_xvmc_hwaccel_deps="xvmc"
2701 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2702 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2703 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2704 mpeg1_vdpau_hwaccel_deps="vdpau"
2705 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2706 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2707 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2708 mpeg1_xvmc_hwaccel_deps="xvmc"
2709 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2710 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2711 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2712 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2713 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2714 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2715 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2716 mpeg2_dxva2_hwaccel_deps="dxva2"
2717 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2718 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2719 mpeg2_mmal_hwaccel_deps="mmal"
2720 mpeg2_qsv_hwaccel_deps="libmfx"
2721 mpeg2_vaapi_hwaccel_deps="vaapi"
2722 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_vdpau_hwaccel_deps="vdpau"
2724 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2726 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_xvmc_hwaccel_deps="xvmc"
2728 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2729 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2730 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2731 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2732 mpeg4_mmal_hwaccel_deps="mmal"
2733 mpeg4_vaapi_hwaccel_deps="vaapi"
2734 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2735 mpeg4_vdpau_hwaccel_deps="vdpau"
2736 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2737 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2738 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2739 vc1_cuvid_hwaccel_deps="cuda cuvid"
2740 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2741 vc1_d3d11va_hwaccel_deps="d3d11va"
2742 vc1_d3d11va_hwaccel_select="vc1_decoder"
2743 vc1_d3d11va2_hwaccel_deps="d3d11va"
2744 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2745 vc1_dxva2_hwaccel_deps="dxva2"
2746 vc1_dxva2_hwaccel_select="vc1_decoder"
2747 vc1_mmal_hwaccel_deps="mmal"
2748 vc1_qsv_hwaccel_deps="libmfx"
2749 vc1_vaapi_hwaccel_deps="vaapi"
2750 vc1_vaapi_hwaccel_select="vc1_decoder"
2751 vc1_vdpau_hwaccel_deps="vdpau"
2752 vc1_vdpau_hwaccel_select="vc1_decoder"
2753 vp8_cuvid_hwaccel_deps="cuda cuvid"
2754 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2755 vp9_cuvid_hwaccel_deps="cuda cuvid"
2756 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2757 vp8_mediacodec_hwaccel_deps="mediacodec"
2758 vp8_qsv_hwaccel_deps="libmfx"
2759 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2760 vp9_d3d11va_hwaccel_select="vp9_decoder"
2761 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2762 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2763 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2764 vp9_dxva2_hwaccel_select="vp9_decoder"
2765 vp9_mediacodec_hwaccel_deps="mediacodec"
2766 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2767 vp9_vaapi_hwaccel_select="vp9_decoder"
2768 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2769 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2770 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2771 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2772 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2773
2774 # hardware-accelerated codecs
2775 omx_deps="libdl pthreads"
2776 omx_rpi_select="omx"
2777 qsv_deps="libmfx"
2778 qsvdec_select="qsv"
2779 qsvenc_select="qsv"
2780 vaapi_encode_deps="vaapi"
2781 v4l2_m2m_deps_any="linux_videodev2_h"
2782
2783 hwupload_cuda_filter_deps="cuda"
2784 scale_npp_filter_deps="cuda libnpp"
2785 scale_cuda_filter_deps="cuda_sdk"
2786 thumbnail_cuda_filter_deps="cuda_sdk"
2787
2788 nvenc_deps="cuda"
2789 nvenc_deps_any="libdl LoadLibrary"
2790 nvenc_encoder_deps="nvenc"
2791
2792 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2793 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2794 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2795 h264_cuvid_decoder_deps="cuda cuvid"
2796 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2797 h264_mediacodec_decoder_deps="mediacodec"
2798 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2799 h264_mmal_decoder_deps="mmal"
2800 h264_nvenc_encoder_deps="nvenc"
2801 h264_omx_encoder_deps="omx"
2802 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2803 h264_qsv_encoder_select="qsvenc"
2804 h264_rkmpp_decoder_deps="rkmpp"
2805 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2806 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2807 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2808 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2809 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2810 hevc_cuvid_decoder_deps="cuda cuvid"
2811 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2812 hevc_mediacodec_decoder_deps="mediacodec"
2813 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2814 hevc_nvenc_encoder_deps="nvenc"
2815 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2816 hevc_qsv_encoder_select="hevcparse qsvenc"
2817 hevc_rkmpp_decoder_deps="rkmpp"
2818 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2819 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2820 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2821 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2822 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2823 mjpeg_cuvid_decoder_deps="cuda cuvid"
2824 mjpeg_qsv_encoder_deps="libmfx"
2825 mjpeg_qsv_encoder_select="qsvenc"
2826 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2827 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2828 mpeg1_cuvid_decoder_deps="cuda cuvid"
2829 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2830 mpeg2_crystalhd_decoder_select="crystalhd"
2831 mpeg2_cuvid_decoder_deps="cuda cuvid"
2832 mpeg2_mmal_decoder_deps="mmal"
2833 mpeg2_mediacodec_decoder_deps="mediacodec"
2834 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2835 mpeg2_qsv_encoder_select="qsvenc"
2836 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2837 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2838 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2839 mpeg4_crystalhd_decoder_select="crystalhd"
2840 mpeg4_cuvid_decoder_deps="cuda cuvid"
2841 mpeg4_mediacodec_decoder_deps="mediacodec"
2842 mpeg4_mmal_decoder_deps="mmal"
2843 mpeg4_omx_encoder_deps="omx"
2844 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2845 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2846 msmpeg4_crystalhd_decoder_select="crystalhd"
2847 nvenc_h264_encoder_select="h264_nvenc_encoder"
2848 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2849 vc1_crystalhd_decoder_select="crystalhd"
2850 vc1_cuvid_decoder_deps="cuda cuvid"
2851 vc1_mmal_decoder_deps="mmal"
2852 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2853 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2854 vp8_cuvid_decoder_deps="cuda cuvid"
2855 vp8_mediacodec_decoder_deps="mediacodec"
2856 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2857 vp8_rkmpp_decoder_deps="rkmpp"
2858 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2859 vp8_vaapi_encoder_select="vaapi_encode"
2860 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2861 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2862 vp9_cuvid_decoder_deps="cuda cuvid"
2863 vp9_mediacodec_decoder_deps="mediacodec"
2864 vp9_rkmpp_decoder_deps="rkmpp"
2865 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2866 vp9_vaapi_encoder_select="vaapi_encode"
2867 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2868 wmv3_crystalhd_decoder_select="crystalhd"
2869
2870 # parsers
2871 aac_parser_select="adts_header"
2872 h264_parser_select="golomb h264dsp h264parse"
2873 hevc_parser_select="hevcparse"
2874 mpegaudio_parser_select="mpegaudioheader"
2875 mpegvideo_parser_select="mpegvideo"
2876 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2877 vc1_parser_select="vc1dsp"
2878
2879 # bitstream_filters
2880 aac_adtstoasc_bsf_select="adts_header"
2881 h264_metadata_bsf_select="cbs_h264"
2882 h264_redundant_pps_bsf_select="cbs_h264"
2883 hevc_metadata_bsf_select="cbs_h265"
2884 mjpeg2jpeg_bsf_select="jpegtables"
2885 mpeg2_metadata_bsf_select="cbs_mpeg2"
2886 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2887
2888 # external libraries
2889 aac_at_decoder_deps="audiotoolbox"
2890 ac3_at_decoder_deps="audiotoolbox"
2891 ac3_at_decoder_select="ac3_parser"
2892 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2893 alac_at_decoder_deps="audiotoolbox"
2894 amr_nb_at_decoder_deps="audiotoolbox"
2895 avisynth_deps_any="libdl LoadLibrary"
2896 avisynth_demuxer_deps="avisynth"
2897 avisynth_demuxer_select="riffdec"
2898 eac3_at_decoder_deps="audiotoolbox"
2899 eac3_at_decoder_select="ac3_parser"
2900 gsm_ms_at_decoder_deps="audiotoolbox"
2901 ilbc_at_decoder_deps="audiotoolbox"
2902 mp1_at_decoder_deps="audiotoolbox"
2903 mp2_at_decoder_deps="audiotoolbox"
2904 mp3_at_decoder_deps="audiotoolbox"
2905 mp1_at_decoder_select="mpegaudioheader"
2906 mp2_at_decoder_select="mpegaudioheader"
2907 mp3_at_decoder_select="mpegaudioheader"
2908 pcm_alaw_at_decoder_deps="audiotoolbox"
2909 pcm_mulaw_at_decoder_deps="audiotoolbox"
2910 qdmc_at_decoder_deps="audiotoolbox"
2911 qdm2_at_decoder_deps="audiotoolbox"
2912 aac_at_encoder_deps="audiotoolbox"
2913 aac_at_encoder_select="audio_frame_queue"
2914 alac_at_encoder_deps="audiotoolbox"
2915 alac_at_encoder_select="audio_frame_queue"
2916 ilbc_at_encoder_deps="audiotoolbox"
2917 ilbc_at_encoder_select="audio_frame_queue"
2918 pcm_alaw_at_encoder_deps="audiotoolbox"
2919 pcm_alaw_at_encoder_select="audio_frame_queue"
2920 pcm_mulaw_at_encoder_deps="audiotoolbox"
2921 pcm_mulaw_at_encoder_select="audio_frame_queue"
2922 chromaprint_muxer_deps="chromaprint"
2923 h264_videotoolbox_encoder_deps="pthreads"
2924 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2925 libcelt_decoder_deps="libcelt"
2926 libfdk_aac_decoder_deps="libfdk_aac"
2927 libfdk_aac_encoder_deps="libfdk_aac"
2928 libfdk_aac_encoder_select="audio_frame_queue"
2929 libgme_demuxer_deps="libgme"
2930 libgsm_decoder_deps="libgsm"
2931 libgsm_encoder_deps="libgsm"
2932 libgsm_ms_decoder_deps="libgsm"
2933 libgsm_ms_encoder_deps="libgsm"
2934 libilbc_decoder_deps="libilbc"
2935 libilbc_encoder_deps="libilbc"
2936 libkvazaar_encoder_deps="libkvazaar"
2937 libmodplug_demuxer_deps="libmodplug"
2938 libmp3lame_encoder_deps="libmp3lame"
2939 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2940 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2941 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2942 libopencore_amrnb_encoder_select="audio_frame_queue"
2943 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2944 libopenh264_decoder_deps="libopenh264"
2945 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2946 libopenh264_encoder_deps="libopenh264"
2947 libopenjpeg_decoder_deps="libopenjpeg"
2948 libopenjpeg_encoder_deps="libopenjpeg"
2949 libopenmpt_demuxer_deps="libopenmpt"
2950 libopus_decoder_deps="libopus"
2951 libopus_encoder_deps="libopus"
2952 libopus_encoder_select="audio_frame_queue"
2953 librsvg_decoder_deps="librsvg"
2954 libshine_encoder_deps="libshine"
2955 libshine_encoder_select="audio_frame_queue"
2956 libspeex_decoder_deps="libspeex"
2957 libspeex_encoder_deps="libspeex"
2958 libspeex_encoder_select="audio_frame_queue"
2959 libtheora_encoder_deps="libtheora"
2960 libtwolame_encoder_deps="libtwolame"
2961 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2962 libvorbis_decoder_deps="libvorbis"
2963 libvorbis_encoder_deps="libvorbis libvorbisenc"
2964 libvorbis_encoder_select="audio_frame_queue"
2965 libvpx_vp8_decoder_deps="libvpx"
2966 libvpx_vp8_encoder_deps="libvpx"
2967 libvpx_vp9_decoder_deps="libvpx"
2968 libvpx_vp9_encoder_deps="libvpx"
2969 libwavpack_encoder_deps="libwavpack"
2970 libwavpack_encoder_select="audio_frame_queue"
2971 libwebp_encoder_deps="libwebp"
2972 libwebp_anim_encoder_deps="libwebp"
2973 libx262_encoder_deps="libx262"
2974 libx264_encoder_deps="libx264"
2975 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2976 libx264rgb_encoder_select="libx264_encoder"
2977 libx265_encoder_deps="libx265"
2978 libxavs_encoder_deps="libxavs"
2979 libxvid_encoder_deps="libxvid"
2980 libzvbi_teletext_decoder_deps="libzvbi"
2981 videotoolbox_suggest="coreservices"
2982 videotoolbox_deps="corefoundation coremedia corevideo"
2983 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2984
2985 # demuxers / muxers
2986 ac3_demuxer_select="ac3_parser"
2987 aiff_muxer_select="iso_media"
2988 asf_demuxer_select="riffdec"
2989 asf_o_demuxer_select="riffdec"
2990 asf_muxer_select="riffenc"
2991 asf_stream_muxer_select="asf_muxer"
2992 avi_demuxer_select="iso_media riffdec exif"
2993 avi_muxer_select="riffenc"
2994 caf_demuxer_select="iso_media riffdec"
2995 caf_muxer_select="iso_media"
2996 dash_muxer_select="mp4_muxer"
2997 dash_demuxer_deps="libxml2"
2998 dirac_demuxer_select="dirac_parser"
2999 dts_demuxer_select="dca_parser"
3000 dtshd_demuxer_select="dca_parser"
3001 dv_demuxer_select="dvprofile"
3002 dv_muxer_select="dvprofile"
3003 dxa_demuxer_select="riffdec"
3004 eac3_demuxer_select="ac3_parser"
3005 f4v_muxer_select="mov_muxer"
3006 fifo_muxer_deps="threads"
3007 flac_demuxer_select="flac_parser"
3008 hds_muxer_select="flv_muxer"
3009 hls_muxer_select="mpegts_muxer"
3010 hls_muxer_suggest="gcrypt openssl"
3011 image2_alias_pix_demuxer_select="image2_demuxer"
3012 image2_brender_pix_demuxer_select="image2_demuxer"
3013 ipod_muxer_select="mov_muxer"
3014 ismv_muxer_select="mov_muxer"
3015 matroska_audio_muxer_select="matroska_muxer"
3016 matroska_demuxer_select="iso_media riffdec"
3017 matroska_demuxer_suggest="bzlib lzo zlib"
3018 matroska_muxer_select="iso_media riffenc"
3019 mmf_muxer_select="riffenc"
3020 mov_demuxer_select="iso_media riffdec"
3021 mov_demuxer_suggest="zlib"
3022 mov_muxer_select="iso_media riffenc rtpenc_chain"
3023 mp3_demuxer_select="mpegaudio_parser"
3024 mp3_muxer_select="mpegaudioheader"
3025 mp4_muxer_select="mov_muxer"
3026 mpegts_demuxer_select="iso_media"
3027 mpegts_muxer_select="adts_muxer latm_muxer"
3028 mpegtsraw_demuxer_select="mpegts_demuxer"
3029 mxf_d10_muxer_select="mxf_muxer"
3030 mxf_opatom_muxer_select="mxf_muxer"
3031 nut_muxer_select="riffenc"
3032 nuv_demuxer_select="riffdec"
3033 oga_muxer_select="ogg_muxer"
3034 ogg_demuxer_select="dirac_parse"
3035 ogv_muxer_select="ogg_muxer"
3036 opus_muxer_select="ogg_muxer"
3037 psp_muxer_select="mov_muxer"
3038 rtp_demuxer_select="sdp_demuxer"
3039 rtp_muxer_select="golomb"
3040 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3041 rtsp_demuxer_select="http_protocol rtpdec"
3042 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3043 sap_demuxer_select="sdp_demuxer"
3044 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3045 sdp_demuxer_select="rtpdec"
3046 smoothstreaming_muxer_select="ismv_muxer"
3047 spdif_demuxer_select="adts_header"
3048 spdif_muxer_select="adts_header"
3049 spx_muxer_select="ogg_muxer"
3050 swf_demuxer_suggest="zlib"
3051 tak_demuxer_select="tak_parser"
3052 tg2_muxer_select="mov_muxer"
3053 tgp_muxer_select="mov_muxer"
3054 vobsub_demuxer_select="mpegps_demuxer"
3055 w64_demuxer_select="wav_demuxer"
3056 w64_muxer_select="wav_muxer"
3057 wav_demuxer_select="riffdec"
3058 wav_muxer_select="riffenc"
3059 webm_muxer_select="iso_media riffenc"
3060 webm_dash_manifest_demuxer_select="matroska_demuxer"
3061 wtv_demuxer_select="mpegts_demuxer riffdec"
3062 wtv_muxer_select="mpegts_muxer riffenc"
3063 xmv_demuxer_select="riffdec"
3064 xwma_demuxer_select="riffdec"
3065
3066 # indevs / outdevs
3067 alsa_indev_deps="alsa"
3068 alsa_outdev_deps="alsa"
3069 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3070 avfoundation_indev_suggest="coregraphics applicationservices"
3071 avfoundation_indev_extralibs="-framework Foundation"
3072 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3073 caca_outdev_deps="libcaca"
3074 decklink_deps_any="libdl LoadLibrary"
3075 decklink_indev_deps="decklink threads"
3076 decklink_indev_extralibs="-lstdc++"
3077 decklink_outdev_deps="decklink threads"
3078 decklink_outdev_extralibs="-lstdc++"
3079 libndi_newtek_indev_deps="libndi_newtek"
3080 libndi_newtek_indev_extralibs="-lndi"
3081 libndi_newtek_outdev_deps="libndi_newtek"
3082 libndi_newtek_outdev_extralibs="-lndi"
3083 dshow_indev_deps="IBaseFilter"
3084 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3085 fbdev_indev_deps="linux_fb_h"
3086 fbdev_outdev_deps="linux_fb_h"
3087 gdigrab_indev_deps="CreateDIBSection"
3088 gdigrab_indev_extralibs="-lgdi32"
3089 gdigrab_indev_select="bmp_decoder"
3090 iec61883_indev_deps="libiec61883"
3091 jack_indev_deps="libjack"
3092 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3093 kmsgrab_indev_deps="libdrm"
3094 lavfi_indev_deps="avfilter"
3095 libcdio_indev_deps="libcdio"
3096 libdc1394_indev_deps="libdc1394"
3097 openal_indev_deps="openal"
3098 opengl_outdev_deps="opengl"
3099 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3100 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3101 pulse_indev_deps="libpulse"
3102 pulse_outdev_deps="libpulse"
3103 sdl2_outdev_deps="sdl2"
3104 sndio_indev_deps="sndio"
3105 sndio_outdev_deps="sndio"
3106 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3107 v4l2_indev_suggest="libv4l2"
3108 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3109 v4l2_outdev_suggest="libv4l2"
3110 vfwcap_indev_deps="vfw32 vfwcap_defines"
3111 xcbgrab_indev_deps="libxcb"
3112 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3113 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3114 xv_outdev_extralibs="-lXv -lX11 -lXext"
3115
3116 # protocols
3117 async_protocol_deps="threads"
3118 bluray_protocol_deps="libbluray"
3119 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3120 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3121 ffrtmpcrypt_protocol_select="tcp_protocol"
3122 ffrtmphttp_protocol_conflict="librtmp_protocol"
3123 ffrtmphttp_protocol_select="http_protocol"
3124 ftp_protocol_select="tcp_protocol"
3125 gopher_protocol_select="network"
3126 http_protocol_select="tcp_protocol"
3127 http_protocol_suggest="zlib"
3128 httpproxy_protocol_select="tcp_protocol"
3129 httpproxy_protocol_suggest="zlib"
3130 https_protocol_select="tls_protocol"
3131 https_protocol_suggest="zlib"
3132 icecast_protocol_select="http_protocol"
3133 librtmp_protocol_deps="librtmp"
3134 librtmpe_protocol_deps="librtmp"
3135 librtmps_protocol_deps="librtmp"
3136 librtmpt_protocol_deps="librtmp"
3137 librtmpte_protocol_deps="librtmp"
3138 libsmbclient_protocol_deps="libsmbclient gplv3"
3139 libssh_protocol_deps="libssh"
3140 mmsh_protocol_select="http_protocol"
3141 mmst_protocol_select="network"
3142 rtmp_protocol_conflict="librtmp_protocol"
3143 rtmp_protocol_select="tcp_protocol"
3144 rtmp_protocol_suggest="zlib"
3145 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3146 rtmpe_protocol_suggest="zlib"
3147 rtmps_protocol_conflict="librtmp_protocol"
3148 rtmps_protocol_select="tls_protocol"
3149 rtmps_protocol_suggest="zlib"
3150 rtmpt_protocol_select="ffrtmphttp_protocol"
3151 rtmpt_protocol_suggest="zlib"
3152 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3153 rtmpte_protocol_suggest="zlib"
3154 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3155 rtmpts_protocol_suggest="zlib"
3156 rtp_protocol_select="udp_protocol"
3157 schannel_conflict="openssl gnutls"
3158 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3159 sctp_protocol_select="network"
3160 securetransport_conflict="openssl gnutls"
3161 srtp_protocol_select="rtp_protocol srtp"
3162 tcp_protocol_select="network"
3163 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3164 tls_protocol_select="tcp_protocol"
3165 udp_protocol_select="network"
3166 udplite_protocol_select="network"
3167 unix_protocol_deps="sys_un_h"
3168 unix_protocol_select="network"
3169
3170 # filters
3171 afftfilt_filter_deps="avcodec"
3172 afftfilt_filter_select="fft"
3173 afir_filter_deps="avcodec"
3174 afir_filter_select="fft"
3175 amovie_filter_deps="avcodec avformat"
3176 aresample_filter_deps="swresample"
3177 ass_filter_deps="libass"
3178 atempo_filter_deps="avcodec"
3179 atempo_filter_select="rdft"
3180 azmq_filter_deps="libzmq"
3181 blackframe_filter_deps="gpl"
3182 boxblur_filter_deps="gpl"
3183 bs2b_filter_deps="libbs2b"
3184 colormatrix_filter_deps="gpl"
3185 coreimage_filter_deps="coreimage appkit"
3186 coreimage_filter_extralibs="-framework OpenGL"
3187 coreimagesrc_filter_deps="coreimage appkit"
3188 coreimagesrc_filter_extralibs="-framework OpenGL"
3189 cover_rect_filter_deps="avcodec avformat gpl"
3190 cropdetect_filter_deps="gpl"
3191 deinterlace_qsv_filter_deps="libmfx"
3192 deinterlace_vaapi_filter_deps="vaapi"
3193 delogo_filter_deps="gpl"
3194 deshake_filter_select="pixelutils"
3195 deshake_filter_suggest="opencl"
3196 drawtext_filter_deps="libfreetype"
3197 drawtext_filter_suggest="libfontconfig libfribidi"
3198 elbg_filter_deps="avcodec"
3199 eq_filter_deps="gpl"
3200 fftfilt_filter_deps="avcodec"
3201 fftfilt_filter_select="rdft"
3202 find_rect_filter_deps="avcodec avformat gpl"
3203 firequalizer_filter_deps="avcodec"
3204 firequalizer_filter_select="rdft"
3205 flite_filter_deps="libflite"
3206 framerate_filter_select="pixelutils"
3207 frei0r_filter_deps="frei0r libdl"
3208 frei0r_src_filter_deps="frei0r libdl"
3209 fspp_filter_deps="gpl"
3210 geq_filter_deps="gpl"
3211 histeq_filter_deps="gpl"
3212 hqdn3d_filter_deps="gpl"
3213 interlace_filter_deps="gpl"
3214 kerndeint_filter_deps="gpl"
3215 ladspa_filter_deps="ladspa libdl"
3216 mcdeint_filter_deps="avcodec gpl"
3217 movie_filter_deps="avcodec avformat"
3218 mpdecimate_filter_deps="gpl"
3219 mpdecimate_filter_select="pixelutils"
3220 mptestsrc_filter_deps="gpl"
3221 negate_filter_deps="lut_filter"
3222 nnedi_filter_deps="gpl"
3223 ocr_filter_deps="libtesseract"
3224 ocv_filter_deps="libopencv"
3225 owdenoise_filter_deps="gpl"
3226 pan_filter_deps="swresample"
3227 perspective_filter_deps="gpl"
3228 phase_filter_deps="gpl"
3229 pp7_filter_deps="gpl"
3230 pp_filter_deps="gpl postproc"
3231 pullup_filter_deps="gpl"
3232 removelogo_filter_deps="avcodec avformat swscale"
3233 repeatfields_filter_deps="gpl"
3234 resample_filter_deps="avresample"
3235 rubberband_filter_deps="librubberband"
3236 sab_filter_deps="gpl swscale"
3237 scale2ref_filter_deps="swscale"
3238 scale_filter_deps="swscale"
3239 scale_qsv_filter_deps="libmfx"
3240 select_filter_select="pixelutils"
3241 showcqt_filter_deps="avcodec avformat swscale"
3242 showcqt_filter_suggest="libfontconfig libfreetype"
3243 showcqt_filter_select="fft"
3244 showfreqs_filter_deps="avcodec"
3245 showfreqs_filter_select="fft"
3246 showspectrum_filter_deps="avcodec"
3247 showspectrum_filter_select="fft"
3248 showspectrumpic_filter_deps="avcodec"
3249 showspectrumpic_filter_select="fft"
3250 signature_filter_deps="gpl avcodec avformat"
3251 smartblur_filter_deps="gpl swscale"
3252 sofalizer_filter_deps="libmysofa avcodec"
3253 sofalizer_filter_select="fft"
3254 spectrumsynth_filter_deps="avcodec"
3255 spectrumsynth_filter_select="fft"
3256 spp_filter_deps="gpl avcodec"
3257 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3258 stereo3d_filter_deps="gpl"
3259 subtitles_filter_deps="avformat avcodec libass"
3260 super2xsai_filter_deps="gpl"
3261 pixfmts_super2xsai_test_deps="super2xsai_filter"
3262 tinterlace_filter_deps="gpl"
3263 tinterlace_merge_test_deps="tinterlace_filter"
3264 tinterlace_pad_test_deps="tinterlace_filter"
3265 tonemap_filter_deps="const_nan"
3266 uspp_filter_deps="gpl avcodec"
3267 unsharp_filter_suggest="opencl"
3268 vaguedenoiser_filter_deps="gpl"
3269 vidstabdetect_filter_deps="libvidstab"
3270 vidstabtransform_filter_deps="libvidstab"
3271 libvmaf_filter_deps="libvmaf"
3272 zmq_filter_deps="libzmq"
3273 zoompan_filter_deps="swscale"
3274 zscale_filter_deps="libzimg const_nan"
3275 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3276
3277 # examples
3278 avio_dir_cmd_deps="avformat avutil"
3279 avio_reading_deps="avformat avcodec avutil"
3280 decode_audio_example_deps="avcodec avutil"
3281 decode_video_example_deps="avcodec avutil"
3282 demuxing_decoding_example_deps="avcodec avformat avutil"
3283 encode_audio_example_deps="avcodec avutil"
3284 encode_video_example_deps="avcodec avutil"
3285 extract_mvs_example_deps="avcodec avformat avutil"
3286 filter_audio_example_deps="avfilter avutil"
3287 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3288 filtering_video_example_deps="avfilter avcodec avformat avutil"
3289 http_multiclient_example_deps="avformat avutil fork"
3290 hw_decode_example_deps="avcodec avformat avutil"
3291 metadata_example_deps="avformat avutil"
3292 muxing_example_deps="avcodec avformat avutil swscale"
3293 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3294 remuxing_example_deps="avcodec avformat avutil"
3295 resampling_audio_example_deps="avutil swresample"
3296 scaling_video_example_deps="avutil swscale"
3297 transcode_aac_example_deps="avcodec avformat swresample"
3298 transcoding_example_deps="avfilter avcodec avformat avutil"
3299
3300 # EXTRALIBS_LIST
3301 cpu_init_extralibs="pthreads_extralibs"
3302 cws2fws_extralibs="zlib_extralibs"
3303
3304 # libraries, in linking order
3305 avcodec_deps="avutil"
3306 avcodec_suggest="libm"
3307 avcodec_select="null_bsf"
3308 avdevice_deps="avformat avcodec avutil"
3309 avdevice_suggest="libm"
3310 avfilter_deps="avutil"
3311 avfilter_suggest="libm"
3312 avformat_deps="avcodec avutil"
3313 avformat_suggest="libm network zlib"
3314 avresample_deps="avutil"
3315 avresample_suggest="libm"
3316 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3317 postproc_deps="avutil gpl"
3318 postproc_suggest="libm"
3319 swresample_deps="avutil"
3320 swresample_suggest="libm libsoxr"
3321 swscale_deps="avutil"
3322 swscale_suggest="libm"
3323
3324 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3325 avfilter_extralibs="pthreads_extralibs"
3326 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3327
3328 # programs
3329 ffmpeg_deps="avcodec avfilter avformat swresample"
3330 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3331                null_filter
3332                trim_filter"
3333 ffmpeg_suggest="ole32 psapi shell32"
3334 ffplay_deps="avcodec avformat swscale swresample sdl2"
3335 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3336 ffplay_suggest="shell32"
3337 ffprobe_deps="avcodec avformat"
3338 ffprobe_suggest="shell32"
3339 ffserver_deps="avformat fork sarestart"
3340 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3341
3342 # documentation
3343 podpages_deps="perl"
3344 manpages_deps="perl pod2man"
3345 htmlpages_deps="perl"
3346 htmlpages_deps_any="makeinfo_html texi2html"
3347 txtpages_deps="perl makeinfo"
3348 doc_deps_any="manpages htmlpages podpages txtpages"
3349
3350 # default parameters
3351
3352 logfile="ffbuild/config.log"
3353
3354 # installation paths
3355 prefix_default="/usr/local"
3356 bindir_default='${prefix}/bin'
3357 datadir_default='${prefix}/share/ffmpeg'
3358 docdir_default='${prefix}/share/doc/ffmpeg'
3359 incdir_default='${prefix}/include'
3360 libdir_default='${prefix}/lib'
3361 mandir_default='${prefix}/share/man'
3362
3363 # toolchain
3364 ar_default="ar"
3365 cc_default="gcc"
3366 cxx_default="g++"
3367 host_cc_default="gcc"
3368 doxygen_default="doxygen"
3369 install="install"
3370 ln_s_default="ln -s -f"
3371 nm_default="nm -g"
3372 pkg_config_default=pkg-config
3373 ranlib_default="ranlib"
3374 strip_default="strip"
3375 version_script='--version-script'
3376 x86asmexe_default="nasm"
3377 windres_default="windres"
3378 nvcc_default="nvcc"
3379 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3380 striptype="direct"
3381
3382 # OS
3383 target_os_default=$(tolower $(uname -s))
3384 host_os=$target_os_default
3385
3386 # machine
3387 if test "$target_os_default" = aix; then
3388     arch_default=$(uname -p)
3389     strip_default="strip -X32_64"
3390 else
3391     arch_default=$(uname -m)
3392 fi
3393 cpu="generic"
3394 intrinsics="none"
3395
3396 # configurable options
3397 enable $PROGRAM_LIST
3398 enable $DOCUMENT_LIST
3399 enable $EXAMPLE_LIST
3400 enable $(filter_out avresample $LIBRARY_LIST)
3401 enable stripping
3402
3403 enable asm
3404 enable debug
3405 enable doc
3406 enable faan faandct faanidct
3407 enable optimizations
3408 enable runtime_cpudetect
3409 enable safe_bitstream_reader
3410 enable static
3411 enable swscale_alpha
3412 enable valgrind_backtrace
3413
3414 sws_max_filter_size_default=256
3415 set_default sws_max_filter_size
3416
3417 # internal components are enabled by default
3418 enable $EXTRALIBS_LIST
3419
3420 # Avoid external, non-system, libraries getting enabled by dependency resolution
3421 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3422
3423 # build settings
3424 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3425 LIBPREF="lib"
3426 LIBSUF=".a"
3427 FULLNAME='$(NAME)$(BUILDSUF)'
3428 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3429 SLIBPREF="lib"
3430 SLIBSUF=".so"
3431 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3432 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3433 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3434 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3435 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3436 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3437 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3438
3439 asflags_filter=echo
3440 cflags_filter=echo
3441 ldflags_filter=echo
3442
3443 AS_C='-c'
3444 AS_O='-o $@'
3445 CC_C='-c'
3446 CC_E='-E -o $@'
3447 CC_O='-o $@'
3448 CXX_C='-c'
3449 CXX_O='-o $@'
3450 OBJCC_C='-c'
3451 OBJCC_E='-E -o $@'
3452 OBJCC_O='-o $@'
3453 X86ASM_O='-o $@'
3454 LD_O='-o $@'
3455 LD_LIB='-l%'
3456 LD_PATH='-L'
3457 HOSTCC_C='-c'
3458 HOSTCC_E='-E -o $@'
3459 HOSTCC_O='-o $@'
3460 HOSTLD_O='-o $@'
3461 NVCC_C='-c'
3462 NVCC_O='-o $@'
3463
3464 host_extralibs='-lm'
3465 host_cflags_filter=echo
3466 host_ldflags_filter=echo
3467
3468 target_path='$(CURDIR)'
3469
3470 # since the object filename is not given with the -MM flag, the compiler
3471 # is only able to print the basename, and we must add the path ourselves
3472 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3473 DEPFLAGS='-MM'
3474
3475 mkdir -p ffbuild
3476
3477 # find source path
3478 if test -f configure; then
3479     source_path=.
3480 else
3481     source_path=$(cd $(dirname "$0"); pwd)
3482     case "$source_path" in
3483         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3484     esac
3485     test -e "$source_path/config.h" &&
3486         die "Out of tree builds are impossible with config.h in source dir."
3487 fi
3488
3489 for v in "$@"; do
3490     r=${v#*=}
3491     l=${v%"$r"}
3492     r=$(sh_quote "$r")
3493     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3494 done
3495
3496 find_things(){
3497     thing=$1
3498     pattern=$2
3499     file=$source_path/$3
3500     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3501 }
3502
3503 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3504 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3505 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3506 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3507 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3508 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3509 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3510 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3511 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3512
3513 find_things_extern(){
3514     thing=$1
3515     pattern=$2
3516     file=$source_path/$3
3517     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3518 }
3519
3520 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3521 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3522
3523 AVCODEC_COMPONENTS_LIST="
3524     $BSF_LIST
3525     $DECODER_LIST
3526     $ENCODER_LIST
3527     $HWACCEL_LIST
3528     $PARSER_LIST
3529 "
3530
3531 AVDEVICE_COMPONENTS_LIST="
3532     $INDEV_LIST
3533     $OUTDEV_LIST
3534 "
3535
3536 AVFILTER_COMPONENTS_LIST="
3537     $FILTER_LIST
3538 "
3539
3540 AVFORMAT_COMPONENTS_LIST="
3541     $DEMUXER_LIST
3542     $MUXER_LIST
3543     $PROTOCOL_LIST
3544 "
3545
3546 ALL_COMPONENTS="
3547     $AVCODEC_COMPONENTS_LIST
3548     $AVDEVICE_COMPONENTS_LIST
3549     $AVFILTER_COMPONENTS_LIST
3550     $AVFORMAT_COMPONENTS_LIST
3551 "
3552
3553 for n in $COMPONENT_LIST; do
3554     v=$(toupper ${n%s})_LIST
3555     eval enable \$$v
3556     eval ${n}_if_any="\$$v"
3557 done
3558
3559 enable $ARCH_EXT_LIST
3560
3561 die_unknown(){
3562     echo "Unknown option \"$1\"."
3563     echo "See $0 --help for available options."
3564     exit 1
3565 }
3566
3567 print_in_columns() {
3568     cols=$(expr $ncols / 24)
3569     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3570 }
3571
3572 show_list() {
3573     suffix=_$1
3574     shift
3575     echo $* | sed s/$suffix//g | print_in_columns
3576     exit 0
3577 }
3578
3579 rand_list(){
3580     IFS=', '
3581     set -- $*
3582     unset IFS
3583     for thing; do
3584         comp=${thing%:*}
3585         prob=${thing#$comp}
3586         prob=${prob#:}
3587         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3588         echo "prob ${prob:-0.5}"
3589         printf '%s\n' $comp
3590     done
3591 }
3592
3593 do_random(){
3594     action=$1
3595     shift
3596     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3597     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3598 }
3599
3600 for opt do
3601     optval="${opt#*=}"
3602     case "$opt" in
3603         --extra-ldflags=*)
3604             add_ldflags $optval
3605         ;;
3606         --extra-ldexeflags=*)
3607             add_ldexeflags $optval
3608         ;;
3609         --extra-ldsoflags=*)
3610             add_ldsoflags $optval
3611         ;;
3612         --extra-ldlibflags=*)
3613             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3614                  "removed in the future. Use --extra-ldsoflags instead."
3615             add_ldsoflags $optval
3616         ;;
3617         --extra-libs=*)
3618             add_extralibs $optval
3619         ;;
3620         --disable-devices)
3621             disable $INDEV_LIST $OUTDEV_LIST
3622         ;;
3623         --enable-debug=*)
3624             debuglevel="$optval"
3625         ;;
3626         --disable-programs)
3627             disable $PROGRAM_LIST
3628         ;;
3629         --disable-everything)
3630             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3631         ;;
3632         --disable-all)
3633             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3634             disable $LIBRARY_LIST $PROGRAM_LIST doc
3635             enable avutil
3636         ;;
3637         --enable-random|--disable-random)
3638             action=${opt%%-random}
3639             do_random ${action#--} $COMPONENT_LIST
3640         ;;
3641         --enable-random=*|--disable-random=*)
3642             action=${opt%%-random=*}
3643             do_random ${action#--} $optval
3644         ;;
3645         --enable-sdl)
3646             enable sdl2
3647         ;;
3648         --enable-*=*|--disable-*=*)
3649             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3650             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3651             eval list=\$$(toupper $thing)_LIST
3652             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3653             list=$(filter "$name" $list)
3654             [ "$list" = "" ] && warn "Option $opt did not match anything"
3655             $action $list
3656         ;;
3657         --enable-yasm|--disable-yasm)
3658             warn "The ${opt} option is only provided for compatibility and will be\n"\
3659                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3660             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3661         ;;
3662         --yasmexe=*)
3663             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3664                  "removed in the future. Use --x86asmexe instead."
3665             x86asmexe="$optval"
3666         ;;
3667         --enable-?*|--disable-?*)
3668             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3669             if is_in $option $COMPONENT_LIST; then
3670                 test $action = disable && action=unset
3671                 eval $action \$$(toupper ${option%s})_LIST
3672             elif is_in $option $CMDLINE_SELECT; then
3673                 $action $option
3674             else
3675                 die_unknown $opt
3676             fi
3677         ;;
3678         --list-*)
3679             NAME="${opt#--list-}"
3680             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3681             NAME=${NAME%s}
3682             eval show_list $NAME \$$(toupper $NAME)_LIST
3683         ;;
3684         --help|-h) show_help
3685         ;;
3686         --quiet|-q) quiet=yes
3687         ;;
3688         --fatal-warnings) enable fatal_warnings
3689         ;;
3690         --libfuzzer=*)
3691             libfuzzer_path="$optval"
3692         ;;
3693         *)
3694             optname="${opt%%=*}"
3695             optname="${optname#--}"
3696             optname=$(echo "$optname" | sed 's/-/_/g')
3697             if is_in $optname $CMDLINE_SET; then
3698                 eval $optname='$optval'
3699             elif is_in $optname $CMDLINE_APPEND; then
3700                 append $optname "$optval"
3701             else
3702                 die_unknown $opt
3703             fi
3704         ;;
3705     esac
3706 done
3707
3708 for e in $env; do
3709     eval "export $e"
3710 done
3711
3712 if disabled autodetect; then
3713
3714     # Unless iconv is explicitely disabled by the user, we still want to probe
3715     # for the iconv from the libc.
3716     disabled iconv || enable libc_iconv
3717
3718     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3719     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3720 fi
3721 # Mark specifically enabled, but normally autodetected libraries as requested.
3722 for lib in $AUTODETECT_LIBS; do
3723     enabled $lib && request $lib
3724 done
3725 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3726 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3727 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3728
3729 disabled logging && logfile=/dev/null
3730
3731 die_license_disabled() {
3732     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3733 }
3734
3735 die_license_disabled_gpl() {
3736     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3737 }
3738
3739 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3740 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3741
3742 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3743 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3744
3745 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3746
3747 enabled_all gnutls openssl &&
3748     die "GnuTLS and OpenSSL must not be enabled at the same time."
3749
3750 # Disable all the library-specific components if the library itself
3751 # is disabled, see AVCODEC_LIST and following _LIST variables.
3752
3753 disable_components(){
3754     disabled ${1} && disable $(
3755         eval components="\$$(toupper ${1})_COMPONENTS"
3756         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3757     )
3758 }
3759
3760 map 'disable_components $v' $LIBRARY_LIST
3761
3762 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3763 set >> $logfile
3764
3765 test -n "$valgrind" && toolchain="valgrind-memcheck"
3766
3767 enabled ossfuzz && {
3768     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3769     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3770 }
3771
3772 case "$toolchain" in
3773     *-asan)
3774         cc_default="${toolchain%-asan}"
3775         add_cflags  -fsanitize=address
3776         add_ldflags -fsanitize=address
3777     ;;
3778     *-msan)
3779         cc_default="${toolchain%-msan}"
3780         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3781         add_ldflags -fsanitize=memory
3782     ;;
3783     *-tsan)
3784         cc_default="${toolchain%-tsan}"
3785         add_cflags  -fsanitize=thread -fPIE
3786         add_ldflags -fsanitize=thread -pie
3787         case "$toolchain" in
3788             gcc-tsan)
3789                 add_cflags  -fPIC
3790                 add_ldflags -fPIC
3791                 ;;
3792         esac
3793     ;;
3794     *-usan)
3795         cc_default="${toolchain%-usan}"
3796         add_cflags  -fsanitize=undefined
3797         add_ldflags -fsanitize=undefined
3798     ;;
3799     valgrind-*)
3800         target_exec_default="valgrind"
3801         case "$toolchain" in
3802             valgrind-massif)
3803                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3804                 ;;
3805             valgrind-memcheck)
3806                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3807                 ;;
3808         esac
3809     ;;
3810     msvc)
3811         # Check whether the current MSVC version needs the C99 converter.
3812         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3813         # support enough of C99 to build ffmpeg. Default to the new
3814         # behaviour if the regexp was unable to match anything, since this
3815         # successfully parses the version number of existing supported
3816         # versions that require the converter (MSVC 2010 and 2012).
3817         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3818         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3819             cc_default="cl"
3820             cxx_default="cl"
3821         else
3822             cc_default="c99wrap cl"
3823             cxx_default="c99wrap cl"
3824         fi
3825         ld_default="$source_path/compat/windows/mslink"
3826         nm_default="dumpbin -symbols"
3827         ar_default="lib"
3828         case "$arch" in
3829         arm*)
3830             as_default="armasm"
3831             ;;
3832         esac
3833         target_os_default="win32"
3834         # Use a relative path for TMPDIR. This makes sure all the
3835         # ffconf temp files are written with a relative path, avoiding
3836         # issues with msys/win32 path conversion for MSVC parameters
3837         # such as -Fo<file> or -out:<file>.
3838         TMPDIR=.
3839     ;;
3840     icl)
3841         cc_default="icl"
3842         ld_default="xilink"
3843         nm_default="dumpbin -symbols"
3844         ar_default="xilib"
3845         target_os_default="win32"
3846         TMPDIR=.
3847     ;;
3848     gcov)
3849         add_cflags  -fprofile-arcs -ftest-coverage
3850         add_ldflags -fprofile-arcs -ftest-coverage
3851     ;;
3852     llvm-cov)
3853         add_cflags -fprofile-arcs -ftest-coverage
3854         add_ldflags --coverage
3855     ;;
3856     hardened)
3857         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3858         add_cflags   -fno-strict-overflow -fstack-protector-all
3859         add_ldflags  -Wl,-z,relro -Wl,-z,now
3860         add_cflags   -fPIE
3861         add_ldexeflags -fPIE -pie
3862     ;;
3863     ?*)
3864         die "Unknown toolchain $toolchain"
3865     ;;
3866 esac
3867
3868 test -n "$cross_prefix" && enable cross_compile
3869
3870 if enabled cross_compile; then
3871     test -n "$arch" && test -n "$target_os" ||
3872         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3873 fi
3874
3875 ar_default="${cross_prefix}${ar_default}"
3876 cc_default="${cross_prefix}${cc_default}"
3877 cxx_default="${cross_prefix}${cxx_default}"
3878 nm_default="${cross_prefix}${nm_default}"
3879 pkg_config_default="${cross_prefix}${pkg_config_default}"
3880 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3881     ranlib_default="${cross_prefix}${ranlib_default} -D"
3882 else
3883     ranlib_default="${cross_prefix}${ranlib_default}"
3884 fi
3885 strip_default="${cross_prefix}${strip_default}"
3886 windres_default="${cross_prefix}${windres_default}"
3887
3888 sysinclude_default="${sysroot}/usr/include"
3889
3890 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3891     target_exec target_os x86asmexe nvcc
3892 enabled cross_compile || host_cc_default=$cc
3893 set_default host_cc
3894
3895 pkg_config_fail_message=""
3896 if ! $pkg_config --version >/dev/null 2>&1; then
3897     warn "$pkg_config not found, library detection may fail."
3898     pkg_config=false
3899 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3900     pkg_config_fail_message="
3901 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3902 fi
3903
3904 if test $doxygen != $doxygen_default && \
3905   ! $doxygen --version >/dev/null 2>&1; then
3906     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3907 fi
3908
3909 exesuf() {
3910     case $1 in
3911         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3912     esac
3913 }
3914
3915 EXESUF=$(exesuf $target_os)
3916 HOSTEXESUF=$(exesuf $host_os)
3917
3918 # set temporary file name
3919 : ${TMPDIR:=$TEMPDIR}
3920 : ${TMPDIR:=$TMP}
3921 : ${TMPDIR:=/tmp}
3922
3923 if [ -n "$tempprefix" ] ; then
3924     mktemp(){
3925         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3926         echo "$tmpname"
3927         mkdir "$tmpname"
3928     }
3929 elif ! check_cmd mktemp -u XXXXXX; then
3930     # simple replacement for missing mktemp
3931     # NOT SAFE FOR GENERAL USE
3932     mktemp(){
3933         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3934         echo "$tmpname"
3935         mkdir "$tmpname"
3936     }
3937 fi
3938
3939 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3940     die "Unable to create temporary directory in $TMPDIR."
3941
3942 tmpfile(){
3943     tmp="${FFTMPDIR}/test"$2
3944     (set -C; exec > $tmp) 2> /dev/null ||
3945         die "Unable to create temporary file in $FFTMPDIR."
3946     eval $1=$tmp
3947 }
3948
3949 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3950 trap 'exit 2' INT
3951
3952 tmpfile TMPASM .asm
3953 tmpfile TMPC   .c
3954 tmpfile TMPCPP .cpp
3955 tmpfile TMPE   $EXESUF
3956 tmpfile TMPH   .h
3957 tmpfile TMPM   .m
3958 tmpfile TMPO   .o
3959 tmpfile TMPS   .S
3960 tmpfile TMPSH  .sh
3961 tmpfile TMPV   .ver
3962
3963 unset -f mktemp
3964
3965 chmod +x $TMPE
3966
3967 # make sure we can execute files in $TMPDIR
3968 cat > $TMPSH 2>> $logfile <<EOF
3969 #! /bin/sh
3970 EOF
3971 chmod +x $TMPSH >> $logfile 2>&1
3972 if ! $TMPSH >> $logfile 2>&1; then
3973     cat <<EOF
3974 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3975 variable to another directory and make sure that it is not mounted noexec.
3976 EOF
3977     die "Sanity test failed."
3978 fi
3979
3980 armasm_flags(){
3981     for flag; do
3982         case $flag in
3983             # Filter out MSVC cl.exe options from cflags that shouldn't
3984             # be passed to gas-preprocessor
3985             -M[TD]*)                                            ;;
3986             *)                  echo $flag                      ;;
3987         esac
3988    done
3989 }
3990
3991 ccc_flags(){
3992     for flag; do
3993         case $flag in
3994             -std=c99)           echo -c99                       ;;
3995             -mcpu=*)            echo -arch ${flag#*=}           ;;
3996             -mieee)             echo -ieee                      ;;
3997             -O*|-fast)          echo $flag                      ;;
3998             -fno-math-errno)    echo -assume nomath_errno       ;;
3999             -g)                 echo -g3                        ;;
4000             -Wall)              echo -msg_enable level2         ;;
4001             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
4002             -Wl,*)              echo $flag                      ;;
4003             -f*|-W*)                                            ;;
4004             *)                  echo $flag                      ;;
4005         esac
4006    done
4007 }
4008
4009 cparser_flags(){
4010     for flag; do
4011         case $flag in
4012             -Wno-switch)             echo -Wno-switch-enum ;;
4013             -Wno-format-zero-length) ;;
4014             -Wdisabled-optimization) ;;
4015             -Wno-pointer-sign)       echo -Wno-other ;;
4016             *)                       echo $flag ;;
4017         esac
4018     done
4019 }
4020
4021 msvc_common_flags(){
4022     for flag; do
4023         case $flag in
4024             # In addition to specifying certain flags under the compiler
4025             # specific filters, they must be specified here as well or else the
4026             # generic catch all at the bottom will print the original flag.
4027             -Wall)                ;;
4028             -Wextra)              ;;
4029             -std=c99)             ;;
4030             # Common flags
4031             -fomit-frame-pointer) ;;
4032             -g)                   echo -Z7 ;;
4033             -fno-math-errno)      ;;
4034             -fno-common)          ;;
4035             -fno-signed-zeros)    ;;
4036             -fPIC)                ;;
4037             -mthumb)              ;;
4038             -march=*)             ;;
4039             -lz)                  echo zlib.lib ;;
4040             -lx264)               echo libx264.lib ;;
4041             -lstdc++)             ;;
4042             -l*)                  echo ${flag#-l}.lib ;;
4043             -LARGEADDRESSAWARE)   echo $flag ;;
4044             -L*)                  echo -libpath:${flag#-L} ;;
4045             *)                    echo $flag ;;
4046         esac
4047     done
4048 }
4049
4050 msvc_flags(){
4051     msvc_common_flags "$@"
4052     for flag; do
4053         case $flag in
4054             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4055                                        -wd4554 ;;
4056             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4057                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4058                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4059                                        -wd4307 \
4060                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4061         esac
4062     done
4063 }
4064
4065 icl_flags(){
4066     msvc_common_flags "$@"
4067     for flag; do
4068         case $flag in
4069             # Despite what Intel's documentation says -Wall, which is supported
4070             # on Windows, does enable remarks so disable them here.
4071             -Wall)                echo $flag -Qdiag-disable:remark ;;
4072             -std=c99)             echo -Qstd=c99 ;;
4073             -flto)                echo -ipo ;;
4074         esac
4075     done
4076 }
4077
4078 icc_flags(){
4079     for flag; do
4080         case $flag in
4081             -flto)                echo -ipo ;;
4082             *)                    echo $flag ;;
4083         esac
4084     done
4085 }
4086
4087 pgi_flags(){
4088     for flag; do
4089         case $flag in
4090             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4091             -fomit-frame-pointer) echo -Mnoframe ;;
4092             -g)                   echo -gopt ;;
4093             *)                    echo $flag ;;
4094         esac
4095     done
4096 }
4097
4098 suncc_flags(){
4099     for flag; do
4100         case $flag in
4101             -march=*|-mcpu=*)
4102                 case "${flag#*=}" in
4103                     native)                   echo -xtarget=native       ;;
4104                     v9|niagara)               echo -xarch=sparc          ;;
4105                     ultrasparc)               echo -xarch=sparcvis       ;;
4106                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4107                     i586|pentium)             echo -xchip=pentium        ;;
4108                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4109                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4110                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4111                     pentium4*)          echo -xtarget=pentium4           ;;
4112                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4113                     *-sse3)             echo -xarch=sse3                 ;;
4114                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4115                     bonnell)                   echo -xarch=ssse3         ;;
4116                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4117                     westmere)                  echo -xtarget=westmere    ;;
4118                     silvermont)                echo -xarch=sse4_2        ;;
4119                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4120                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4121                                                echo -xarch=avx           ;;
4122                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4123                     btver1)                    echo -xarch=amdsse4a      ;;
4124                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4125                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4126                     k8|opteron|athlon64|athlon-fx)
4127                                                echo -xarch=sse2a         ;;
4128                     athlon*)                   echo -xarch=pentium_proa  ;;
4129                 esac
4130                 ;;
4131             -std=c99)             echo -xc99              ;;
4132             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4133             -fPIC)                echo -KPIC -xcode=pic32 ;;
4134             -W*,*)                echo $flag              ;;
4135             -f*-*|-W*|-mimpure-text)                      ;;
4136             -shared)              echo -G                 ;;
4137             *)                    echo $flag              ;;
4138         esac
4139     done
4140 }
4141
4142 tms470_flags(){
4143     for flag; do
4144         case $flag in
4145             -march=*|-mcpu=*)
4146                 case "${flag#*=}" in
4147                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4148                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4149                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4150                     armv6*|arm11*)          echo -mv=6   ;;
4151                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4152                                             echo -mv=5e  ;;
4153                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4154                 esac
4155                 ;;
4156             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4157             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4158             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4159             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4160             -msoft-float)   echo --float_support=vfplib       ;;
4161             -O[0-3]|-mf=*)  echo $flag                        ;;
4162             -g)             echo -g -mn                       ;;
4163             -pds=*)         echo $flag                        ;;
4164             -D*|-I*)        echo $flag                        ;;
4165             --gcc|--abi=*)  echo $flag                        ;;
4166             -me)            echo $flag                        ;;
4167         esac
4168     done
4169 }
4170
4171 probe_cc(){
4172     pfx=$1
4173     _cc=$2
4174     first=$3
4175
4176     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4177     unset _ld_o _ldflags _ld_lib _ld_path
4178     unset _depflags _DEPCMD _DEPFLAGS
4179     _flags_filter=echo
4180
4181     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4182         true # no-op to avoid reading stdin in following checks
4183     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4184         _type=llvm_gcc
4185         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4186         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4187         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4188         _cflags_speed='-O3'
4189         _cflags_size='-Os'
4190     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4191         _type=gcc
4192         gcc_version=$($_cc --version | head -n1)
4193         gcc_basever=$($_cc -dumpversion)
4194         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4195         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4196         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4197         case $gcc_basever in
4198             2) ;;
4199             2.*) ;;
4200             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4201         esac
4202         if [ "$first" = true ]; then
4203             case $gcc_basever in
4204                 4.2*)
4205                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4206             esac
4207         fi
4208         _cflags_speed='-O3'
4209         _cflags_size='-Os'
4210     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4211         _type=icc
4212         _ident=$($_cc --version | head -n1)
4213         _depflags='-MMD'
4214         _cflags_speed='-O3'
4215         _cflags_size='-Os'
4216         _cflags_noopt='-O1'
4217         _flags_filter=icc_flags
4218     elif $_cc -v 2>&1 | grep -q xlc; then
4219         _type=xlc
4220         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4221         _cflags_speed='-O5'
4222         _cflags_size='-O5 -qcompact'
4223     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4224         _type=ccc
4225         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4226         _DEPFLAGS='-M'
4227         _cflags_speed='-fast'
4228         _cflags_size='-O1'
4229         _flags_filter=ccc_flags
4230     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4231         test -d "$sysroot" || die "No valid sysroot specified."
4232         _type=armcc
4233         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4234         armcc_conf="$PWD/armcc.conf"
4235         $_cc --arm_linux_configure                 \
4236              --arm_linux_config_file="$armcc_conf" \
4237              --configure_sysroot="$sysroot"        \
4238              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4239              die "Error creating armcc configuration file."
4240         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4241         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4242         as_default="${cross_prefix}gcc"
4243         _depflags='-MMD'
4244         _cflags_speed='-O3'
4245         _cflags_size='-Os'
4246     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4247         _type=tms470
4248         _ident=$($_cc -version | head -n1 | tr -s ' ')
4249         _flags='--gcc --abi=eabi -me'
4250         _cc_e='-ppl -fe=$@'
4251         _cc_o='-fe=$@'
4252         _depflags='-ppa -ppd=$(@:.o=.d)'
4253         _cflags_speed='-O3 -mf=5'
4254         _cflags_size='-O3 -mf=2'
4255         _flags_filter=tms470_flags
4256     elif $_cc -v 2>&1 | grep -q clang; then
4257         _type=clang
4258         _ident=$($_cc --version 2>/dev/null | head -n1)
4259         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4260         _cflags_speed='-O3'
4261         _cflags_size='-Oz'
4262     elif $_cc -V 2>&1 | grep -q Sun; then
4263         _type=suncc
4264         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4265         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4266         _DEPFLAGS='-xM1 -xc99'
4267         _ldflags='-std=c99'
4268         _cflags_speed='-O5'
4269         _cflags_size='-O5 -xspace'
4270         _flags_filter=suncc_flags
4271     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4272         _type=pathscale
4273         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4274         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4275         _cflags_speed='-O2'
4276         _cflags_size='-Os'
4277         _flags_filter='filter_out -Wdisabled-optimization'
4278     elif $_cc -v 2>&1 | grep -q Open64; then
4279         _type=open64
4280         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4281         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4282         _cflags_speed='-O2'
4283         _cflags_size='-Os'
4284         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4285     elif $_cc -V 2>&1 | grep -q Portland; then
4286         _type=pgi
4287         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4288         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4289         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4290         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4291         _cflags_noopt="-O"
4292         _flags_filter=pgi_flags
4293     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4294         _type=armasm
4295         _ident=$($_cc | head -n1)
4296         # 4509: "This form of conditional instruction is deprecated"
4297         _flags="-nologo -ignore 4509"
4298         _flags_filter=armasm_flags
4299     elif $_cc 2>&1 | grep -q Intel; then
4300         _type=icl
4301         _ident=$($_cc 2>&1 | head -n1)
4302         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4303         # Not only is O3 broken on 13.x+ but it is slower on all previous
4304         # versions (tested) as well.
4305         _cflags_speed="-O2"
4306         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4307         if $_cc 2>&1 | grep -q Linker; then
4308             _ld_o='-out:$@'
4309         else
4310             _ld_o='-Fe$@'
4311         fi
4312         _cc_o='-Fo$@'
4313         _cc_e='-P'
4314         _flags_filter=icl_flags
4315         _ld_lib='lib%.a'
4316         _ld_path='-libpath:'
4317         # -Qdiag-error to make icl error when seeing certain unknown arguments
4318         _flags='-nologo -Qdiag-error:4044,10157'
4319         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4320         # with MSVC which enables it by default.
4321         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4322         disable stripping
4323     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4324         # lld can emulate multiple different linkers; in ms link.exe mode,
4325         # the -? parameter gives the help output which contains an identifyable
4326         # string, while it gives an error in other modes.
4327         _type=lld-link
4328         # The link.exe mode doesn't have a switch for getting the version,
4329         # but we can force it back to gnu mode and get the version from there.
4330         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4331         _ld_o='-out:$@'
4332         _flags_filter=msvc_flags
4333         _ld_lib='lib%.a'
4334         _ld_path='-libpath:'
4335     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4336         _type=msvc
4337         _ident=$($_cc 2>&1 | head -n1)
4338         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4339         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4340         _cflags_speed="-O2"
4341         _cflags_size="-O1"
4342         _cflags_noopt="-O1"
4343         if $_cc -nologo- 2>&1 | grep -q Linker; then
4344             _ld_o='-out:$@'
4345         else
4346             _ld_o='-Fe$@'
4347         fi
4348         _cc_o='-Fo$@'
4349         _cc_e='-P -Fi$@'
4350         _flags_filter=msvc_flags
4351         _ld_lib='lib%.a'
4352         _ld_path='-libpath:'
4353         _flags='-nologo'
4354         disable stripping
4355     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4356         _type=cparser
4357         _ident=$($_cc --version | head -n1)
4358         _depflags='-MMD'
4359         _cflags_speed='-O4'
4360         _cflags_size='-O2'
4361         _flags_filter=cparser_flags
4362     fi
4363
4364     eval ${pfx}_type=\$_type
4365     eval ${pfx}_ident=\$_ident
4366 }
4367
4368 set_ccvars(){
4369     eval ${1}_C=\${_cc_c-\${${1}_C}}
4370     eval ${1}_E=\${_cc_e-\${${1}_E}}
4371     eval ${1}_O=\${_cc_o-\${${1}_O}}
4372
4373     if [ -n "$_depflags" ]; then
4374         eval ${1}_DEPFLAGS=\$_depflags
4375     else
4376         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4377         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4378         eval DEP${1}FLAGS=\$_flags
4379     fi
4380 }
4381
4382 probe_cc cc "$cc" "true"
4383 cflags_filter=$_flags_filter
4384 cflags_speed=$_cflags_speed
4385 cflags_size=$_cflags_size
4386 cflags_noopt=$_cflags_noopt
4387 add_cflags $_flags $_cflags
4388 cc_ldflags=$_ldflags
4389 set_ccvars CC
4390 set_ccvars CXX
4391
4392 probe_cc hostcc "$host_cc"
4393 host_cflags_filter=$_flags_filter
4394 host_cflags_speed=$_cflags_speed
4395 add_host_cflags  $_flags $_cflags
4396 set_ccvars HOSTCC
4397
4398 test -n "$cc_type" && enable $cc_type ||
4399     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4400
4401 : ${as_default:=$cc}
4402 : ${objcc_default:=$cc}
4403 : ${dep_cc_default:=$cc}
4404 : ${ld_default:=$cc}
4405 : ${host_ld_default:=$host_cc}
4406 set_default ar as objcc dep_cc ld ln_s host_ld windres
4407
4408 probe_cc as "$as"
4409 asflags_filter=$_flags_filter
4410 add_asflags $_flags $_cflags
4411 set_ccvars AS
4412
4413 probe_cc objcc "$objcc"
4414 objcflags_filter=$_flags_filter
4415 add_objcflags $_flags $_cflags
4416 set_ccvars OBJC
4417
4418 probe_cc ld "$ld"
4419 ldflags_filter=$_flags_filter
4420 add_ldflags $_flags $_ldflags
4421 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4422 LD_O=${_ld_o-$LD_O}
4423 LD_LIB=${_ld_lib-$LD_LIB}
4424 LD_PATH=${_ld_path-$LD_PATH}
4425
4426 probe_cc hostld "$host_ld"
4427 host_ldflags_filter=$_flags_filter
4428 add_host_ldflags $_flags $_ldflags
4429 HOSTLD_O=${_ld_o-$HOSTLD_O}
4430
4431 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4432     probe_cc depcc "$dep_cc"
4433     CCDEP=${_DEPCMD:-$DEPCMD}
4434     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4435     DEPCCFLAGS=$_flags
4436 fi
4437
4438 if $ar 2>&1 | grep -q Microsoft; then
4439     arflags="-nologo"
4440     ar_o='-out:$@'
4441 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4442     arflags="rq"
4443     ar_o='$@'
4444 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4445     arflags='-Xany -r -c'
4446     ar_o='$@'
4447 elif $ar 2>&1 | grep -q "\[D\] "; then
4448     arflags="rcD"
4449     ar_o='$@'
4450 else
4451     arflags="rc"
4452     ar_o='$@'
4453 fi
4454
4455 add_cflags $extra_cflags
4456 add_cxxflags $extra_cxxflags
4457 add_objcflags $extra_objcflags
4458 add_asflags $extra_cflags
4459
4460 if test -n "$sysroot"; then
4461     case "$cc_type" in
4462         gcc|llvm_gcc|clang)
4463             add_cppflags --sysroot="$sysroot"
4464             add_ldflags --sysroot="$sysroot"
4465         ;;
4466         tms470)
4467             add_cppflags -I"$sysinclude"
4468             add_ldflags  --sysroot="$sysroot"
4469         ;;
4470     esac
4471 fi
4472
4473 if test "$cpu" = host; then
4474     enabled cross_compile &&
4475         die "--cpu=host makes no sense when cross-compiling."
4476
4477     case "$cc_type" in
4478         gcc|llvm_gcc)
4479             check_native(){
4480                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4481                 sed -n "/cc1.*$1=/{
4482                             s/.*$1=\\([^ ]*\\).*/\\1/
4483                             p
4484                             q
4485                         }" $TMPE
4486             }
4487             cpu=$(check_native -march || check_native -mcpu)
4488         ;;
4489         clang)
4490             check_native(){
4491                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4492                 sed -n "/cc1.*-target-cpu /{
4493                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4494                             p
4495                             q
4496                         }" $TMPE
4497             }
4498             cpu=$(check_native -march)
4499         ;;
4500     esac
4501
4502     test "${cpu:-host}" = host &&
4503         die "--cpu=host not supported with compiler $cc"
4504 fi
4505
4506 # Deal with common $arch aliases
4507 case "$arch" in
4508     aarch64|arm64)
4509         arch="aarch64"
4510     ;;
4511     arm*|iPad*|iPhone*)
4512         arch="arm"
4513     ;;
4514     mips*|IP*)
4515         case "$arch" in
4516         *el)
4517             add_cppflags -EL
4518             add_ldflags -EL
4519         ;;
4520         *eb)
4521             add_cppflags -EB
4522             add_ldflags -EB
4523         ;;
4524         esac
4525         arch="mips"
4526     ;;
4527     parisc*|hppa*)
4528         arch="parisc"
4529     ;;
4530     "Power Macintosh"|ppc*|powerpc*)
4531         arch="ppc"
4532     ;;
4533     s390|s390x)
4534         arch="s390"
4535     ;;
4536     sh4|sh)
4537         arch="sh4"
4538     ;;
4539     sun4*|sparc*)
4540         arch="sparc"
4541     ;;
4542     tilegx|tile-gx)
4543         arch="tilegx"
4544     ;;
4545     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4546         arch="x86"
4547     ;;
4548 esac
4549
4550 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4551 enable $arch
4552
4553 # Add processor-specific flags
4554 if enabled aarch64; then
4555
4556     case $cpu in
4557         armv*)
4558             cpuflags="-march=$cpu"
4559         ;;
4560         *)
4561             cpuflags="-mcpu=$cpu"
4562         ;;
4563     esac
4564
4565 elif enabled alpha; then
4566
4567     cpuflags="-mcpu=$cpu"
4568
4569 elif enabled arm; then
4570
4571     check_arm_arch() {
4572         check_cpp_condition stddef.h \
4573             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4574             $cpuflags
4575     }
4576
4577     probe_arm_arch() {
4578         if   check_arm_arch 4;        then echo armv4
4579         elif check_arm_arch 4T;       then echo armv4t
4580         elif check_arm_arch 5;        then echo armv5
4581         elif check_arm_arch 5E;       then echo armv5e
4582         elif check_arm_arch 5T;       then echo armv5t
4583         elif check_arm_arch 5TE;      then echo armv5te
4584         elif check_arm_arch 5TEJ;     then echo armv5te
4585         elif check_arm_arch 6;        then echo armv6
4586         elif check_arm_arch 6J;       then echo armv6j
4587         elif check_arm_arch 6K;       then echo armv6k
4588         elif check_arm_arch 6Z;       then echo armv6z
4589         elif check_arm_arch 6ZK;      then echo armv6zk
4590         elif check_arm_arch 6T2;      then echo armv6t2
4591         elif check_arm_arch 7;        then echo armv7
4592         elif check_arm_arch 7A  7_A;  then echo armv7-a
4593         elif check_arm_arch 7S;       then echo armv7-a
4594         elif check_arm_arch 7R  7_R;  then echo armv7-r
4595         elif check_arm_arch 7M  7_M;  then echo armv7-m
4596         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4597         elif check_arm_arch 8A  8_A;  then echo armv8-a
4598         fi
4599     }
4600
4601     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4602
4603     case $cpu in
4604         armv*)
4605             cpuflags="-march=$cpu"
4606             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4607         ;;
4608         *)
4609             cpuflags="-mcpu=$cpu"
4610             case $cpu in
4611                 cortex-a*)                               subarch=armv7a  ;;
4612                 cortex-r*)                               subarch=armv7r  ;;
4613                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4614                 arm11*)                                  subarch=armv6   ;;
4615                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4616                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4617                 *)                             subarch=$(probe_arm_arch) ;;
4618             esac
4619         ;;
4620     esac
4621
4622     case "$subarch" in
4623         armv5t*)    enable fast_clz                ;;
4624         armv[6-8]*)
4625             enable fast_clz
4626             disabled fast_unaligned || enable fast_unaligned
4627             ;;
4628     esac
4629
4630 elif enabled avr32; then
4631
4632     case $cpu in
4633         ap7[02]0[0-2])
4634             subarch="avr32_ap"
4635             cpuflags="-mpart=$cpu"
4636         ;;
4637         ap)
4638             subarch="avr32_ap"
4639             cpuflags="-march=$cpu"
4640         ;;
4641         uc3[ab]*)
4642             subarch="avr32_uc"
4643             cpuflags="-mcpu=$cpu"
4644         ;;
4645         uc)
4646             subarch="avr32_uc"
4647             cpuflags="-march=$cpu"
4648         ;;
4649     esac
4650
4651 elif enabled bfin; then
4652
4653     cpuflags="-mcpu=$cpu"
4654
4655 elif enabled mips; then
4656
4657     cpuflags="-march=$cpu"
4658
4659     if [ "$cpu" != "generic" ]; then
4660         disable mips32r2
4661         disable mips32r5
4662         disable mips64r2
4663         disable mips32r6
4664         disable mips64r6
4665         disable loongson2
4666         disable loongson3
4667
4668         case $cpu in
4669             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4670                 enable mips32r2
4671                 disable msa
4672             ;;
4673             p5600|i6400|p6600)
4674                 disable mipsdsp
4675                 disable mipsdspr2
4676             ;;
4677             loongson*)
4678                 enable loongson2
4679                 enable loongson3
4680                 enable local_aligned
4681                 enable simd_align_16
4682                 enable fast_64bit
4683                 enable fast_clz
4684                 enable fast_cmov
4685                 enable fast_unaligned
4686                 disable aligned_stack
4687                 disable mipsfpu
4688                 disable mipsdsp
4689                 disable mipsdspr2
4690                 case $cpu in
4691                     loongson3*)
4692                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4693                     ;;
4694                     loongson2e)
4695                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4696                     ;;
4697                     loongson2f)
4698                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4699                     ;;
4700                 esac
4701             ;;
4702             *)
4703                 # Unknown CPU. Disable everything.
4704                 warn "unknown CPU. Disabling all MIPS optimizations."
4705                 disable mipsfpu
4706                 disable mipsdsp
4707                 disable mipsdspr2
4708                 disable msa
4709                 disable mmi
4710             ;;
4711         esac
4712
4713         case $cpu in
4714             24kc)
4715                 disable mipsfpu
4716                 disable mipsdsp
4717                 disable mipsdspr2
4718             ;;
4719             24kf*)
4720                 disable mipsdsp
4721                 disable mipsdspr2
4722             ;;
4723             24kec|34kc|1004kc)
4724                 disable mipsfpu
4725                 disable mipsdspr2
4726             ;;
4727             24kef*|34kf*|1004kf*)
4728                 disable mipsdspr2
4729             ;;
4730             74kc)
4731                 disable mipsfpu
4732             ;;
4733             p5600)
4734                 enable mips32r5
4735                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4736             ;;
4737             i6400)
4738                 enable mips64r6
4739                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4740             ;;
4741             p6600)
4742                 enable mips64r6
4743                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4744             ;;
4745         esac
4746     else
4747         # We do not disable anything. Is up to the user to disable the unwanted features.
4748         warn 'generic cpu selected'
4749     fi
4750
4751 elif enabled ppc; then
4752
4753     disable ldbrx
4754
4755     case $(tolower $cpu) in
4756         601|ppc601|powerpc601)
4757             cpuflags="-mcpu=601"
4758             disable altivec
4759         ;;
4760         603*|ppc603*|powerpc603*)
4761             cpuflags="-mcpu=603"
4762             disable altivec
4763         ;;
4764         604*|ppc604*|powerpc604*)
4765             cpuflags="-mcpu=604"
4766             disable altivec
4767         ;;
4768         g3|75*|ppc75*|powerpc75*)
4769             cpuflags="-mcpu=750"
4770             disable altivec
4771         ;;
4772         g4|745*|ppc745*|powerpc745*)
4773             cpuflags="-mcpu=7450"
4774             disable vsx
4775         ;;
4776         74*|ppc74*|powerpc74*)
4777             cpuflags="-mcpu=7400"
4778             disable vsx
4779         ;;
4780         g5|970|ppc970|powerpc970)
4781             cpuflags="-mcpu=970"
4782             disable vsx
4783         ;;
4784         power[3-6]*)
4785             cpuflags="-mcpu=$cpu"
4786             disable vsx
4787         ;;
4788         power[7-8]*)
4789             cpuflags="-mcpu=$cpu"
4790         ;;
4791         cell)
4792             cpuflags="-mcpu=cell"
4793             enable ldbrx
4794             disable vsx
4795         ;;
4796         e500mc)
4797             cpuflags="-mcpu=e500mc"
4798             disable altivec
4799         ;;
4800         e500v2)
4801             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4802             disable altivec
4803             disable dcbzl
4804         ;;
4805         e500)
4806             cpuflags="-mcpu=8540 -mhard-float"
4807             disable altivec
4808             disable dcbzl
4809         ;;
4810     esac
4811
4812 elif enabled sparc; then
4813
4814     case $cpu in
4815         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4816             cpuflags="-mcpu=$cpu"
4817         ;;
4818         ultrasparc*|niagara[234])
4819             cpuflags="-mcpu=$cpu"
4820         ;;
4821     esac
4822
4823 elif enabled x86; then
4824
4825     case $cpu in
4826         i[345]86|pentium)
4827             cpuflags="-march=$cpu"
4828             disable i686
4829             disable mmx
4830         ;;
4831         # targets that do NOT support nopl and conditional mov (cmov)
4832         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4833             cpuflags="-march=$cpu"
4834             disable i686
4835         ;;
4836         # targets that do support nopl and conditional mov (cmov)
4837         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4838         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4839         |amdfam10|barcelona|b[dt]ver*|znver*)
4840             cpuflags="-march=$cpu"
4841             enable i686
4842             enable fast_cmov
4843         ;;
4844         # targets that do support conditional mov but on which it's slow
4845         pentium4|pentium4m|prescott|nocona)
4846             cpuflags="-march=$cpu"
4847             enable i686
4848             disable fast_cmov
4849         ;;
4850     esac
4851
4852 fi
4853
4854 if [ "$cpu" != generic ]; then
4855     add_cflags  $cpuflags
4856     add_asflags $cpuflags
4857     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4858 fi
4859
4860 # compiler sanity check
4861 check_exec <<EOF
4862 int main(void){ return 0; }
4863 EOF
4864 if test "$?" != 0; then
4865     echo "$cc is unable to create an executable file."
4866     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4867         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4868         echo "Only do this if you know what cross compiling means."
4869     fi
4870     die "C compiler test failed."
4871 fi
4872
4873 add_cppflags -D_ISOC99_SOURCE
4874 add_cxxflags -D__STDC_CONSTANT_MACROS
4875 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4876
4877 # some compilers silently accept -std=c11, so we also need to check that the
4878 # version macro is defined properly
4879 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4880     add_cflags -std=c11 ||
4881     check_cflags -std=c99
4882
4883 check_cppflags -D_FILE_OFFSET_BITS=64
4884 check_cppflags -D_LARGEFILE_SOURCE
4885
4886 add_host_cppflags -D_ISOC99_SOURCE
4887 check_host_cflags -std=c99
4888 check_host_cflags -Wall
4889 check_host_cflags $host_cflags_speed
4890
4891 check_64bit(){
4892     arch32=$1
4893     arch64=$2
4894     expr=$3
4895     check_code cc "" "int test[2*($expr) - 1]" &&
4896         subarch=$arch64 || subarch=$arch32
4897 }
4898
4899 case "$arch" in
4900     aarch64|alpha|ia64)
4901         spic=$shared
4902     ;;
4903     mips)
4904         check_64bit mips mips64 '_MIPS_SIM > 1'
4905         spic=$shared
4906     ;;
4907     parisc)
4908         check_64bit parisc parisc64 'sizeof(void *) > 4'
4909         spic=$shared
4910     ;;
4911     ppc)
4912         check_64bit ppc ppc64 'sizeof(void *) > 4'
4913         spic=$shared
4914     ;;
4915     s390)
4916         check_64bit s390 s390x 'sizeof(void *) > 4'
4917         spic=$shared
4918     ;;
4919     sparc)
4920         check_64bit sparc sparc64 'sizeof(void *) > 4'
4921         spic=$shared
4922     ;;
4923     x86)
4924         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4925         # Treat x32 as x64 for now. Note it also needs spic=$shared
4926         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4927             subarch=x86_64
4928         if test "$subarch" = "x86_64"; then
4929             spic=$shared
4930         fi
4931     ;;
4932     ppc)
4933         check_cc <<EOF && subarch="ppc64"
4934         int test[(int)sizeof(char*) - 7];
4935 EOF
4936     ;;
4937 esac
4938
4939 enable $subarch
4940 enabled spic && enable_weak pic
4941
4942 enabled x86_64 && objformat=elf64 || objformat="elf32"
4943
4944 # OS specific
4945 case $target_os in
4946     aix)
4947         SHFLAGS=-shared
4948         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4949         enabled shared && add_ldflags -Wl,-brtl
4950         ;;
4951     android)
4952         disable symver
4953         enable section_data_rel_ro
4954         SLIB_INSTALL_NAME='$(SLIBNAME)'
4955         SLIB_INSTALL_LINKS=
4956         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4957         ;;
4958     haiku)
4959         prefix_default="/boot/common"
4960         network_extralibs="-lnetwork"
4961         host_extralibs=
4962         ;;
4963     sunos)
4964         SHFLAGS='-shared -Wl,-h,$$(@F)'
4965         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4966         network_extralibs="-lsocket -lnsl"
4967         add_cppflags -D__EXTENSIONS__
4968         # When using suncc to build, the Solaris linker will mark
4969         # an executable with each instruction set encountered by
4970         # the Solaris assembler.  As our libraries contain their own
4971         # guards for processor-specific code, instead suppress
4972         # generation of the HWCAPS ELF section on Solaris x86 only.
4973         enabled_all suncc x86 &&
4974             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4975             add_ldflags -Wl,-M,mapfile
4976         nm_default='nm -P -g'
4977         version_script='-M'
4978         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4979         ;;
4980     netbsd)
4981         disable symver
4982         oss_indev_extralibs="-lossaudio"
4983         oss_outdev_extralibs="-lossaudio"
4984         enabled gcc || check_ldflags -Wl,-zmuldefs
4985         ;;
4986     openbsd|bitrig)
4987         disable symver
4988         SHFLAGS='-shared'
4989         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4990         SLIB_INSTALL_LINKS=
4991         oss_indev_extralibs="-lossaudio"
4992         oss_outdev_extralibs="-lossaudio"
4993         ;;
4994     dragonfly)
4995         disable symver
4996         ;;
4997     freebsd)
4998         ;;
4999     bsd/os)
5000         add_extralibs -lpoll -lgnugetopt
5001         strip="strip -d"
5002         ;;
5003     darwin)
5004         enabled ppc && add_asflags -force_cpusubtype_ALL
5005         install_name_dir_default='$(SHLIBDIR)'
5006         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5007         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5008         strip="${strip} -x"
5009         add_ldflags -Wl,-dynamic,-search_paths_first
5010         check_cflags -Werror=partial-availability
5011         SLIBSUF=".dylib"
5012         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5013         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5014         enabled x86_64 && objformat="macho64" || objformat="macho32"
5015         enabled_any pic shared x86_64 ||
5016             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5017         check_header dispatch/dispatch.h &&
5018             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5019         if test -n "$sysroot"; then
5020             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5021             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5022         fi
5023         version_script='-exported_symbols_list'
5024         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5025         ;;
5026     msys*)
5027         die "Native MSYS builds are discouraged, please use the MINGW environment."
5028         ;;
5029     mingw32*|mingw64*)
5030         if test $target_os = "mingw32ce"; then
5031             disable network
5032         else
5033             target_os=mingw32
5034         fi
5035         LIBTARGET=i386
5036         if enabled x86_64; then
5037             LIBTARGET="i386:x86-64"
5038         elif enabled arm; then
5039             LIBTARGET=arm-wince
5040         fi
5041         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5042         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5043         shlibdir_default="$bindir_default"
5044         SLIBPREF=""
5045         SLIBSUF=".dll"
5046         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5047         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5048         dlltool="${cross_prefix}dlltool"
5049         if check_cmd lib.exe -list; then
5050             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5051             if enabled x86_64; then
5052                 LIBTARGET=x64
5053             fi
5054         elif check_cmd $dlltool --version; then
5055             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5056         fi
5057         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5058         SLIB_INSTALL_LINKS=
5059         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5060         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5061         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
5062         enabled x86_64 && objformat="win64" || objformat="win32"
5063         ranlib=:
5064         enable dos_paths
5065         check_ldflags -Wl,--nxcompat,--dynamicbase
5066         # Lets work around some stupidity in binutils.
5067         # ld will strip relocations from executables even though we need them
5068         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5069         # however ld then forgets what the entry point should be (oops) so we
5070         # have to manually (re)set it.
5071         if enabled x86_32; then
5072             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5073         elif enabled x86_64; then
5074             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5075             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5076             # Set image base >4GB for extra entropy with HEASLR
5077             add_ldexeflags -Wl,--image-base,0x140000000
5078             append SHFLAGS -Wl,--image-base,0x180000000
5079         fi
5080         ;;
5081     win32|win64)
5082         disable symver
5083         if enabled shared; then
5084             # Link to the import library instead of the normal static library
5085             # for shared libs.
5086             LD_LIB='%.lib'
5087             # Cannot build both shared and static libs with MSVC or icl.
5088             disable static
5089         fi
5090         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5091         shlibdir_default="$bindir_default"
5092         SLIBPREF=""
5093         SLIBSUF=".dll"
5094         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5095         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5096         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5097         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5098         SLIB_INSTALL_LINKS=
5099         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5100         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5101         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5102         enabled x86_64 && objformat="win64" || objformat="win32"
5103         ranlib=:
5104         enable dos_paths
5105         ;;
5106     cygwin*)
5107         target_os=cygwin
5108         shlibdir_default="$bindir_default"
5109         SLIBPREF="cyg"
5110         SLIBSUF=".dll"
5111         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5112         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5113         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5114         SLIB_INSTALL_LINKS=
5115         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5116         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5117         enabled x86_64 && objformat="win64" || objformat="win32"
5118         enable dos_paths
5119         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5120         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5121         ;;
5122     *-dos|freedos|opendos)
5123         network_extralibs="-lsocket"
5124         objformat="coff"
5125         enable dos_paths
5126         add_cppflags -U__STRICT_ANSI__
5127         ;;
5128     linux)
5129         enable section_data_rel_ro
5130         enabled_any arm aarch64 && enable_weak linux_perf
5131         ;;
5132     irix*)
5133         target_os=irix
5134         ranlib="echo ignoring ranlib"
5135         ;;
5136     os/2*)
5137         strip="lxlite -CS"
5138         striptype=""
5139         objformat="aout"
5140         add_cppflags -D_GNU_SOURCE
5141         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5142         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5143         LIBSUF="_s.a"
5144         SLIBPREF=""
5145         SLIBSUF=".dll"
5146         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5147         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5148         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5149             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5150             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5151             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5152             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5153         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5154             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5155         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5156         SLIB_INSTALL_LINKS=
5157         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5158         enable dos_paths
5159         enable_weak os2threads
5160         ;;
5161     gnu/kfreebsd)
5162         add_cppflags -D_BSD_SOURCE
5163         ;;
5164     gnu)
5165         ;;
5166     qnx)
5167         add_cppflags -D_QNX_SOURCE
5168         network_extralibs="-lsocket"
5169         ;;
5170     symbian)
5171         SLIBSUF=".dll"
5172         enable dos_paths
5173         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5174         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5175         add_ldflags -Wl,--target1-abs,--no-undefined \
5176                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5177                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5178         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5179                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5180                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5181         ;;
5182     osf1)
5183         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5184         ;;
5185     minix)
5186         ;;
5187     none)
5188         ;;
5189     *)
5190         die "Unknown OS '$target_os'."
5191         ;;
5192 esac
5193
5194 # test if creating links works
5195 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5196 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5197 mkdir "$link_dest"
5198 $ln_s "$link_dest" "$link_name"
5199 touch "$link_dest/test_file"
5200 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5201     # create link to source path
5202     [ -e src ] && rm src
5203     $ln_s "$source_path" src
5204     source_link=src
5205 else
5206     # creating directory links doesn't work
5207     # fall back to using the full source path
5208     source_link="$source_path"
5209 fi
5210 # cleanup
5211 rm -r "$link_dest"
5212 rm -r "$link_name"
5213
5214 # determine libc flavour
5215
5216 probe_libc(){
5217     pfx=$1
5218     pfx_no_=${pfx%_}
5219     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5220     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5221         eval ${pfx}libc_type=uclibc
5222         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5223     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5224         eval ${pfx}libc_type=glibc
5225         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5226     # MinGW headers can be installed on Cygwin, so check for newlib first.
5227     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5228         eval ${pfx}libc_type=newlib
5229         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5230     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5231     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5232         eval ${pfx}libc_type=mingw64
5233         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5234             add_compat msvcrt/snprintf.o
5235             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5236         fi
5237         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5238         eval test \$${pfx_no_}cc_type = "gcc" &&
5239             add_${pfx}cppflags -D__printf__=__gnu_printf__
5240     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5241          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5242         eval ${pfx}libc_type=mingw32
5243         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5244             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5245             die "ERROR: MinGW32 runtime version must be >= 3.15."
5246         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5247         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5248             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5249         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5250             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5251         eval test \$${pfx_no_}cc_type = "gcc" &&
5252             add_${pfx}cppflags -D__printf__=__gnu_printf__
5253     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5254         eval ${pfx}libc_type=msvcrt
5255         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5256             if [ "$pfx" = host_ ]; then
5257                 add_host_cppflags -Dsnprintf=_snprintf
5258             else
5259                 add_compat strtod.o strtod=avpriv_strtod
5260                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5261                                              _snprintf=avpriv_snprintf  \
5262                                              vsnprintf=avpriv_vsnprintf
5263             fi
5264         fi
5265         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5266         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5267         # 0x601 by default unless something else is set by the user.
5268         # This can easily lead to us detecting functions only present
5269         # in such new versions and producing binaries requiring windows 7.0.
5270         # Therefore explicitly set the default to XP unless the user has
5271         # set something else on the command line.
5272         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5273         # family. For these cases, configure is free to use any functions
5274         # found in the SDK headers by default. (Alternatively, we could force
5275         # _WIN32_WINNT to 0x0602 in that case.)
5276         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5277             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5278 #ifdef WINAPI_FAMILY
5279 #include <winapifamily.h>
5280 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5281 #error not desktop
5282 #endif
5283 #endif
5284 EOF
5285         if [ "$pfx" = "" ]; then
5286             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5287             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5288         fi
5289     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5290         eval ${pfx}libc_type=klibc
5291     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5292         eval ${pfx}libc_type=bionic
5293     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5294         eval ${pfx}libc_type=solaris
5295         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5296     fi
5297     check_${pfx}cc <<EOF
5298 #include <time.h>
5299 void *v = localtime_r;
5300 EOF
5301 test "$?" != 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
5302 #include <time.h>
5303 void *v = localtime_r;
5304 EOF
5305
5306 }
5307
5308 probe_libc
5309 test -n "$libc_type" && enable libc_$libc_type
5310 probe_libc host_
5311 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5312
5313 # hacks for compiler/libc/os combinations
5314
5315 case $libc_type in
5316     bionic)
5317         add_compat strtod.o strtod=avpriv_strtod
5318         ;;
5319     glibc)
5320         if enabled tms470; then
5321             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5322             add_cppflags -D__USER_LABEL_PREFIX__=
5323             add_cppflags -D__builtin_memset=memset
5324             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5325             add_cflags   -pds=48    # incompatible redefinition of macro
5326         elif enabled ccc; then
5327             add_ldflags -Wl,-z,now  # calls to libots crash without this
5328         fi
5329         ;;
5330 esac
5331
5332 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5333     add_cppflags '-I\$(SRC_PATH)/compat/float'
5334
5335 esc(){
5336     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5337 }
5338
5339 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5340
5341 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5342
5343 set_default libdir
5344 : ${shlibdir_default:="$libdir"}
5345 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5346
5347 set_default $PATHS_LIST
5348 set_default nm
5349
5350 # we need to build at least one lib type
5351 if ! enabled_any static shared; then
5352     cat <<EOF
5353 At least one library type must be built.
5354 Specify --enable-static to build the static libraries or --enable-shared to
5355 build the shared libraries as well. To only build the shared libraries specify
5356 --disable-static in addition to --enable-shared.
5357 EOF
5358     exit 1
5359 fi
5360
5361 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5362
5363 enable_weak_pic() {
5364     disabled pic && return
5365     enable pic
5366     add_cppflags -DPIC
5367     case "$target_os" in
5368     mingw*|cygwin*)
5369         ;;
5370     *)
5371         add_cflags -fPIC
5372         ;;
5373     esac
5374     add_asflags  -fPIC
5375 }
5376
5377 enabled pic && enable_weak_pic
5378
5379 check_cc <<EOF || die "Symbol mangling check failed."
5380 int ff_extern;
5381 EOF
5382 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5383 extern_prefix=${sym%%ff_extern*}
5384
5385 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5386
5387 _restrict=
5388 for restrict_keyword in restrict __restrict__ __restrict; do
5389     check_cc <<EOF && _restrict=$restrict_keyword && break
5390 void foo(char * $restrict_keyword p);
5391 EOF
5392 done
5393
5394 check_cc <<EOF && enable pragma_deprecated
5395 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5396 EOF
5397
5398 check_cc <<EOF && enable attribute_packed
5399 struct { int x; } __attribute__((packed)) x;
5400 EOF
5401
5402 check_cc <<EOF && enable attribute_may_alias
5403 union { int x; } __attribute__((may_alias)) x;
5404 EOF
5405
5406 check_cc <<EOF || die "endian test failed"
5407 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5408 EOF
5409 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5410
5411 check_cc <<EOF && enable const_nan
5412 #include <math.h>
5413 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5414 EOF
5415
5416 if ! enabled ppc64 || enabled bigendian; then
5417     disable vsx
5418 fi
5419
5420 check_gas() {
5421     log "check_gas using '$as' as AS"
5422     # :vararg is used on aarch64, arm and ppc altivec
5423     check_as <<EOF || return 1
5424 .macro m n, y:vararg=0
5425 \n: .int \y
5426 .endm
5427 m x
5428 EOF
5429     # .altmacro is only used in arm asm
5430     ! enabled arm || check_as <<EOF || return 1
5431 .altmacro
5432 EOF
5433     enable gnu_as
5434     return 0
5435 }
5436
5437 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5438     nogas=:
5439     enabled_any arm aarch64 && nogas=die
5440     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5441     as_noop=-v
5442
5443     case $as_type in
5444         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5445         gcc)  gaspp_as_type=gas ;;
5446         *)    gaspp_as_type=$as_type ;;
5447     esac
5448
5449     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5450
5451     test "${as#*gas-preprocessor.pl}" != "$as" ||
5452     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5453         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5454
5455     if ! check_gas ; then
5456         as=${gas:=$as}
5457         check_gas || \
5458             $nogas "GNU assembler not found, install/update gas-preprocessor"
5459     fi
5460
5461     check_as <<EOF && enable as_func
5462 .func test
5463 .endfunc
5464 EOF
5465 fi
5466
5467 check_inline_asm inline_asm_labels '"1:\n"'
5468
5469 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5470
5471 if enabled aarch64; then
5472     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5473     # internal assembler in clang 3.3 does not support this instruction
5474     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5475     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5476
5477     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5478
5479 elif enabled alpha; then
5480
5481     check_cflags -mieee
5482
5483 elif enabled arm; then
5484
5485     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5486
5487     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5488 float func(float a, float b){ return a+b; }
5489 EOF
5490
5491     enabled thumb && check_cflags -mthumb || check_cflags -marm
5492
5493     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5494         enable vfp_args
5495     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5496         enable vfp_args
5497     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5498         case "${cross_prefix:-$cc}" in
5499             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5500             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5501 __asm__ (".eabi_attribute 28, 1");
5502 int main(void) { return 0; }
5503 EOF
5504         esac
5505         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5506     fi
5507
5508     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5509     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5510     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5511     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5512     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5513     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5514     enabled setend  && check_insn setend  'setend be'
5515
5516     [ $target_os = linux ] || [ $target_os = android ] ||
5517         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5518             $ARCH_EXT_LIST_ARM
5519
5520     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5521
5522     check_as <<EOF && enable as_arch_directive
5523 .arch armv7-a
5524 EOF
5525     check_as <<EOF && enable as_fpu_directive
5526 .fpu neon
5527 EOF
5528
5529     # llvm's integrated assembler supports .object_arch from llvm 3.5
5530     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5531         check_as <<EOF && enable as_object_arch
5532 .object_arch armv4
5533 EOF
5534
5535     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5536
5537 elif enabled mips; then
5538
5539     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5540     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5541     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5542
5543     # Enable minimum ISA based on selected options
5544     if enabled mips64; then
5545         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5546         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5547         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5548     else
5549         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5550         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5551         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5552         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5553     fi
5554
5555     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5556     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5557     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5558     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5559     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5560
5561     if enabled bigendian && enabled msa; then
5562         disable msa
5563     fi
5564
5565 elif enabled parisc; then
5566
5567     if enabled gcc; then
5568         case $($cc -dumpversion) in
5569             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5570         esac
5571     fi
5572
5573 elif enabled ppc; then
5574
5575     enable local_aligned
5576
5577     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5578     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5579     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5580     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5581
5582     if enabled altivec; then
5583         check_cflags -maltivec -mabi=altivec
5584
5585         # check if our compiler supports Motorola AltiVec C API
5586         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5587                                  vector signed int v2 = (vector signed int) { 1 };
5588                                  v1 = vec_add(v1, v2);" ||
5589             disable altivec
5590
5591         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5592     fi
5593
5594     if enabled vsx; then
5595         check_cflags -mvsx &&
5596         check_code cc altivec.h "int v[4] = { 0 };
5597                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5598             disable vsx
5599     fi
5600
5601     if enabled power8; then
5602         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5603     fi
5604
5605 elif enabled x86; then
5606
5607     check_builtin rdtsc    intrin.h   "__rdtsc()"
5608     check_builtin mm_empty mmintrin.h "_mm_empty()"
5609
5610     enable local_aligned
5611
5612     # check whether EBP is available on x86
5613     # As 'i' is stored on the stack, this program will crash
5614     # if the base pointer is used to access it because the
5615     # base pointer is cleared in the inline assembly code.
5616     check_exec_crash <<EOF && enable ebp_available
5617 volatile int i=0;
5618 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5619 return i;
5620 EOF
5621
5622     # check whether EBX is available on x86
5623     check_inline_asm ebx_available '""::"b"(0)' &&
5624         check_inline_asm ebx_available '"":::"%ebx"'
5625
5626     # check whether xmm clobbers are supported
5627     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5628
5629     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5630         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5631
5632     # check whether binutils is new enough to compile SSSE3/MMXEXT
5633     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5634     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5635
5636     probe_x86asm(){
5637         x86asmexe_probe=$1
5638         if check_cmd $x86asmexe_probe -v; then
5639             x86asmexe=$x86asmexe_probe
5640             x86asm_type=nasm
5641             x86asm_debug="-g -F dwarf"
5642             X86ASMDEP=
5643             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5644         elif check_cmd $x86asmexe_probe --version; then
5645             x86asmexe=$x86asmexe_probe
5646             x86asm_type=yasm
5647             x86asm_debug="-g dwarf2"
5648             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5649             X86ASM_DEPFLAGS=
5650         fi
5651         check_x86asm "movbe ecx, [5]" && enable x86asm
5652     }
5653
5654     if ! disabled_any asm mmx x86asm; then
5655         disable x86asm
5656         for program in $x86asmexe nasm yasm; do
5657             probe_x86asm $program && break
5658         done
5659         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5660         X86ASMFLAGS="-f $objformat"
5661         enabled pic               && append X86ASMFLAGS "-DPIC"
5662         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5663         case "$objformat" in
5664             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5665         esac
5666
5667         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5668         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5669         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5670         check_x86asm "CPU amdnop" || disable cpunop
5671     fi
5672
5673     case "$cpu" in
5674         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5675             disable fast_clz
5676         ;;
5677     esac
5678
5679 fi
5680
5681 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5682
5683 check_ldflags -Wl,--as-needed
5684 check_ldflags -Wl,-z,noexecstack
5685
5686 if ! disabled network; then
5687     check_func getaddrinfo $network_extralibs
5688     check_func inet_aton $network_extralibs
5689
5690     check_type netdb.h "struct addrinfo"
5691     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5692     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5693     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5694     check_type poll.h "struct pollfd"
5695     check_type netinet/sctp.h "struct sctp_event_subscribe"
5696     check_struct "sys/socket.h" "struct msghdr" msg_flags
5697     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5698     check_type netinet/in.h "struct sockaddr_in6"
5699     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5700     check_type "sys/types.h sys/socket.h" socklen_t
5701
5702     # Prefer arpa/inet.h over winsock2
5703     if check_header arpa/inet.h ; then
5704         check_func closesocket
5705     elif check_header winsock2.h ; then
5706         check_func_headers winsock2.h closesocket -lws2 &&
5707             network_extralibs="-lws2" ||
5708         { check_func_headers winsock2.h closesocket -lws2_32 &&
5709             network_extralibs="-lws2_32"; } || disable winsock2_h network
5710         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5711
5712         check_type ws2tcpip.h socklen_t
5713         check_type ws2tcpip.h "struct addrinfo"
5714         check_type ws2tcpip.h "struct group_source_req"
5715         check_type ws2tcpip.h "struct ip_mreq_source"
5716         check_type ws2tcpip.h "struct ipv6_mreq"
5717         check_type winsock2.h "struct pollfd"
5718         check_struct winsock2.h "struct sockaddr" sa_len
5719         check_type ws2tcpip.h "struct sockaddr_in6"
5720         check_type ws2tcpip.h "struct sockaddr_storage"
5721     else
5722         disable network
5723     fi
5724 fi
5725
5726 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5727 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5728 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5729 check_builtin sarestart signal.h "SA_RESTART"
5730 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5731 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5732 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5733 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5734
5735 case "$custom_allocator" in
5736     jemalloc)
5737         # jemalloc by default does not use a prefix
5738         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5739     ;;
5740     tcmalloc)
5741         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5742         malloc_prefix=tc_
5743     ;;
5744 esac
5745
5746 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5747 check_func  ${malloc_prefix}memalign            && enable memalign
5748 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5749
5750 check_func  access
5751 check_func_headers stdlib.h arc4random
5752 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5753 check_func  fcntl
5754 check_func  fork
5755 check_func  gethrtime
5756 check_func  getopt
5757 check_func  getrusage
5758 check_func  gettimeofday
5759 check_func  isatty
5760 check_func  mach_absolute_time
5761 check_func  mkstemp
5762 check_func  mmap
5763 check_func  mprotect
5764 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5765 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5766 check_func  sched_getaffinity
5767 check_func  setrlimit
5768 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5769 check_func  strerror_r
5770 check_func  sysconf
5771 check_func  sysctl
5772 check_func  usleep
5773
5774 check_func_headers conio.h kbhit
5775 check_func_headers io.h setmode
5776 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5777 check_func_headers stdlib.h getenv
5778 check_func_headers sys/stat.h lstat
5779
5780 check_func_headers windows.h GetProcessAffinityMask
5781 check_func_headers windows.h GetProcessTimes
5782 check_func_headers windows.h GetSystemTimeAsFileTime
5783 check_func_headers windows.h LoadLibrary
5784 check_func_headers windows.h MapViewOfFile
5785 check_func_headers windows.h PeekNamedPipe
5786 check_func_headers windows.h SetConsoleTextAttribute
5787 check_func_headers windows.h SetConsoleCtrlHandler
5788 check_func_headers windows.h Sleep
5789 check_func_headers windows.h VirtualAlloc
5790 check_struct windows.h "CONDITION_VARIABLE" Ptr
5791 check_func_headers glob.h glob
5792 enabled xlib &&
5793     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5794
5795 check_header d3d11.h
5796 check_header direct.h
5797 check_header dirent.h
5798 check_header dlfcn.h
5799 check_header dxgidebug.h
5800 check_header dxva.h
5801 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5802 check_header io.h
5803 check_header libcrystalhd/libcrystalhd_if.h
5804 check_header mach/mach_time.h
5805 check_header malloc.h
5806 check_header net/udplite.h
5807 check_header poll.h
5808 check_header sys/mman.h
5809 check_header sys/param.h
5810 check_header sys/resource.h
5811 check_header sys/select.h
5812 check_header sys/time.h
5813 check_header sys/un.h
5814 check_header termios.h
5815 check_header unistd.h
5816 check_header valgrind/valgrind.h
5817 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5818 check_header windows.h
5819 check_header X11/extensions/XvMClib.h
5820 check_header asm/types.h
5821
5822 # it seems there are versions of clang in some distros that try to use the
5823 # gcc headers, which explodes for stdatomic
5824 # so we also check that atomics actually work here
5825 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5826
5827 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5828 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5829 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5830 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5831
5832 enabled appkit       && check_apple_framework AppKit
5833 enabled audiotoolbox && check_apple_framework AudioToolbox
5834 enabled avfoundation && check_apple_framework AVFoundation
5835 enabled coreimage    && check_apple_framework CoreImage
5836 enabled videotoolbox && check_apple_framework VideoToolbox
5837
5838 check_apple_framework CoreFoundation
5839 check_apple_framework CoreMedia
5840 check_apple_framework CoreVideo
5841
5842 enabled avfoundation && {
5843     disable coregraphics applicationservices
5844     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5845     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5846
5847 enabled videotoolbox && {
5848     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5849     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5850 }
5851
5852 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5853
5854 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5855 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5856 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5857 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5858 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5859
5860 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5861 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5862 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5863 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5864 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5865 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5866 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5867 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5868 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5869
5870 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5871
5872 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5873
5874 if ! disabled w32threads && ! enabled pthreads; then
5875     check_func_headers "windows.h process.h" _beginthreadex &&
5876         enable w32threads || disable w32threads
5877     if ! enabled w32threads && enabled winrt; then
5878         check_func_headers "windows.h" CreateThread &&
5879             enable w32threads || disable w32threads
5880     fi
5881 fi
5882
5883 # check for some common methods of building with pthread support
5884 # do this before the optional library checks as some of them require pthreads
5885 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5886     if check_lib pthreads pthread.h pthread_join   -pthread &&
5887        check_lib pthreads pthread.h pthread_create -pthread; then
5888         add_cflags -pthread
5889     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5890          check_lib pthreads pthread.h pthread_create -pthreads; then
5891         add_cflags -pthreads
5892     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5893          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5894         add_cflags -ldl -pthread
5895     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5896          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5897         :
5898     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5899          check_lib pthreads pthread.h pthread_create -lpthread; then
5900         :
5901     elif check_func pthread_join && check_func pthread_create; then
5902         enable pthreads
5903     fi
5904     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5905 fi
5906
5907
5908 if enabled pthreads; then
5909   check_func pthread_cancel $pthreads_extralibs
5910 fi
5911
5912 enabled pthreads &&
5913     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5914
5915 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5916 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5917 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5918
5919 # On some systems dynamic loading requires no extra linker flags
5920 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5921
5922 check_lib libm math.h sin -lm
5923
5924 atan2f_args=2
5925 copysign_args=2
5926 hypot_args=2
5927 ldexpf_args=2
5928 powf_args=2
5929
5930 for func in $MATH_FUNCS; do
5931     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5932 done
5933
5934 for func in $COMPLEX_FUNCS; do
5935     eval check_complexfunc $func \${${func}_args:-1}
5936 done
5937
5938 # these are off by default, so fail if requested and not available
5939 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5940 enabled cuvid             && { enabled cuda ||
5941                                die "ERROR: CUVID requires CUDA"; }
5942 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5943 enabled decklink          && { require_header DeckLinkAPI.h &&
5944                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5945 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5946 enabled frei0r            && require_header frei0r.h
5947 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5948 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5949 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5950 enabled ladspa            && require_header ladspa.h
5951 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5952 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5953 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5954 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5955 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5956                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5957                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5958 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5959 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5960 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5961 enabled libfdk_aac        && { use_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5962                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5963                                  warn "using libfdk without pkg-config"; } }
5964 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"
5965 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5966 enabled fontconfig        && enable libfontconfig
5967 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5968 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5969 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5970 enabled libgme            && { use_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5971                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5972 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5973                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5974                                done || die "ERROR: libgsm not found"; }
5975 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5976 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5977 # While it may appear that require is being used as a pkg-config
5978 # fallback for libmfx, it is actually being used to detect a different
5979 # installation route altogether.  If libmfx is installed via the Intel
5980 # Media SDK or Intel Media Server Studio, these don't come with
5981 # pkg-config support.  Instead, users should make sure that the build
5982 # can find the libraries and headers through other means.
5983 enabled libmfx            && { use_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5984                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5985 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5986 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5987 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5988 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5989                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5990                                die "ERROR: libnpp not found"; }
5991 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5992 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5993 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5994                                { use_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5995                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5996                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5997 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5998 enabled libopenjpeg       && { use_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5999                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6000 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6001 enabled libopus           && {
6002     enabled libopus_decoder && {
6003         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6004     }
6005     enabled libopus_encoder && {
6006         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6007     }
6008 }
6009 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6010 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6011 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6012 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6013 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6014 enabled libsmbclient      && { use_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6015                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6016 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6017 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6018 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6019 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
6020 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6021 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6022 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6023                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6024                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6025 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6026 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6027 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
6028 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6029 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6030                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6031
6032 enabled libvpx            && {
6033     enabled libvpx_vp8_decoder && {
6034         use_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6035             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
6036                 die "ERROR: libvpx decoder version must be >=0.9.1";
6037     }
6038     enabled libvpx_vp8_encoder && {
6039         use_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6040             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
6041                 die "ERROR: libvpx encoder version must be >=0.9.7";
6042     }
6043     enabled libvpx_vp9_decoder && {
6044         use_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6045             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
6046     }
6047     enabled libvpx_vp9_encoder && {
6048         use_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6049             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6050     }
6051     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6052         die "libvpx enabled but no supported decoders found"
6053     fi
6054 }
6055
6056 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6057 enabled libwebp           && {
6058     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6059     enabled libwebp_anim_encoder && use_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6060 enabled libx264           && { use_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6061                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6062                                  warn "using libx264 without pkg-config"; } } &&
6063                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6064                              { check_cpp_condition x264.h "X264_MPEG2" &&
6065                                enable libx262; }
6066 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6067                              require_cpp_condition x265.h "X265_BUILD >= 68"
6068 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6069 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6070 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
6071 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6072 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6073                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6074                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6075 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6076 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6077 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6078                                { ! enabled cross_compile &&
6079                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6080                                  add_ldflags -L/opt/vc/lib/ &&
6081                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6082                                die "ERROR: mmal not found" &&
6083                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6084 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6085                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6086                                die "ERROR: openal not found"; } &&
6087                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6088                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6089 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6090                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6091                                die "ERROR: opencl not found"; } &&
6092                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6093                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6094                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6095 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6096                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6097                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6098                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6099                                die "ERROR: opengl not found."
6100                              }
6101 enabled omx               && require_header OMX_Core.h
6102 enabled omx_rpi           && { check_header OMX_Core.h ||
6103                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6104                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6105 enabled openssl           && { use_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6106                                use_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6107                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6108                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6109                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6110                                die "ERROR: openssl not found"; }
6111 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
6112                                  die "ERROR : Rockchip MPP was not found."; } &&
6113                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
6114                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
6115                                { enabled libdrm ||
6116                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6117                              }
6118
6119 if enabled gcrypt; then
6120     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6121     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6122         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6123         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6124         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6125             die "ERROR: gcrypt not found"
6126         add_cflags $gcrypt_cflags
6127     else
6128         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6129     fi
6130 fi
6131
6132 if enabled sdl2; then
6133     SDL2_CONFIG="${cross_prefix}sdl2-config"
6134     if check_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6135         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6136             disable sdl2
6137     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6138         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6139         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6140         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6141         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6142         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6143             enable sdl2
6144     fi
6145     if test $target_os = "mingw32"; then
6146         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6147     fi
6148 fi
6149
6150 if enabled decklink; then
6151     case $target_os in
6152         mingw32*|mingw64*|win32|win64)
6153             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6154             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6155             ;;
6156     esac
6157 fi
6158
6159 enabled securetransport &&
6160     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6161     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6162         disable securetransport
6163
6164 enabled schannel &&
6165     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6166     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6167     schannel_extralibs="-lsecur32" ||
6168         disable schannel
6169
6170 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6171 enabled makeinfo \
6172     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6173     && enable makeinfo_html || disable makeinfo_html
6174 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6175 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6176 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6177 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6178
6179 # check V4L2 codecs available in the API
6180 check_header linux/fb.h
6181 check_header linux/videodev2.h
6182 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6183 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6184 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6185 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6186 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6187 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6188 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6189 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6190 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6191 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6192 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6193
6194 check_header sys/videoio.h
6195 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6196
6197 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6198 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6199 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6200 # w32api 3.12 had it defined wrong
6201 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6202
6203 check_type "dshow.h" IBaseFilter
6204
6205 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6206 { check_header dev/bktr/ioctl_meteor.h &&
6207   check_header dev/bktr/ioctl_bt848.h; } ||
6208 { check_header machine/ioctl_meteor.h &&
6209   check_header machine/ioctl_bt848.h; } ||
6210 { check_header dev/video/meteor/ioctl_meteor.h &&
6211   check_header dev/video/bktr/ioctl_bt848.h; } ||
6212 check_header dev/ic/bt8xx.h
6213
6214 if check_struct sys/soundcard.h audio_buf_info bytes; then
6215     enable_sanitized sys/soundcard.h
6216 else
6217     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6218     #include <sys/soundcard.h>
6219     audio_buf_info abc;
6220 EOF
6221 fi
6222 check_header soundcard.h
6223
6224 enabled alsa && use_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6225     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6226
6227 enabled libjack &&
6228     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6229
6230 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6231
6232 if enabled libcdio; then
6233     use_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6234     use_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6235     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6236     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6237     die "ERROR: No usable libcdio/cdparanoia found"
6238 fi
6239
6240 enabled libxcb && use_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6241     disable libxcb_shm libxcb_shape libxcb_xfixes
6242
6243 if enabled libxcb; then
6244     enabled libxcb_shm    && use_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6245     enabled libxcb_shape  && use_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6246     enabled libxcb_xfixes && use_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6247 fi
6248
6249 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6250
6251 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6252 # the desktop api partition
6253 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6254 #ifdef WINAPI_FAMILY
6255 #include <winapifamily.h>
6256 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6257 #error desktop, not uwp
6258 #else
6259 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6260 #endif
6261 #else
6262 #error no family set
6263 #endif
6264 EOF
6265
6266 enabled vaapi &&
6267     check_lib vaapi va/va.h vaInitialize -lva
6268
6269 enabled vaapi &&
6270     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6271     disable vaapi
6272
6273 enabled vaapi &&
6274     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6275
6276 enabled vaapi &&
6277     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6278
6279 enabled vaapi &&
6280     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6281     enable vaapi_1
6282
6283 enabled vdpau &&
6284     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6285     disable vdpau
6286
6287 enabled vdpau &&
6288     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6289
6290 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6291
6292 if enabled x86; then
6293     case $target_os in
6294         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6295             ;;
6296         *)
6297             disable cuda cuvid nvenc
6298             ;;
6299     esac
6300 else
6301     disable cuda cuvid nvenc
6302 fi
6303
6304 enabled nvenc &&
6305     check_cc -I$source_path <<EOF || disable nvenc
6306 #include "compat/nvenc/nvEncodeAPI.h"
6307 NV_ENCODE_API_FUNCTION_LIST flist;
6308 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6309 int main(void) { return 0; }
6310 EOF
6311
6312 # Funny iconv installations are not unusual, so check it after all flags have been set
6313 if enabled libc_iconv; then
6314     check_func_headers iconv.h iconv
6315 elif enabled iconv; then
6316     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6317 fi
6318
6319 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6320
6321 # add some useful compiler flags if supported
6322 check_cflags -Wdeclaration-after-statement
6323 check_cflags -Wall
6324 check_cflags -Wdisabled-optimization
6325 check_cflags -Wpointer-arith
6326 check_cflags -Wredundant-decls
6327 check_cflags -Wwrite-strings
6328 check_cflags -Wtype-limits
6329 check_cflags -Wundef
6330 check_cflags -Wmissing-prototypes
6331 check_cflags -Wno-pointer-to-int-cast
6332 check_cflags -Wstrict-prototypes
6333 check_cflags -Wempty-body
6334
6335 if enabled extra_warnings; then
6336     check_cflags -Wcast-qual
6337     check_cflags -Wextra
6338     check_cflags -Wpedantic
6339 fi
6340
6341 check_disable_warning(){
6342     warning_flag=-W${1#-Wno-}
6343     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6344 }
6345
6346 test_cflags -Werror=unused-command-line-argument &&
6347     append unknown_warning_flags "-Werror=unused-command-line-argument"
6348 test_cflags -Werror=unknown-warning-option &&
6349     append unknown_warning_flags "-Werror=unknown-warning-option"
6350
6351 check_disable_warning -Wno-parentheses
6352 check_disable_warning -Wno-switch
6353 check_disable_warning -Wno-format-zero-length
6354 check_disable_warning -Wno-pointer-sign
6355 check_disable_warning -Wno-unused-const-variable
6356 check_disable_warning -Wno-bool-operation
6357
6358 check_disable_warning_headers(){
6359     warning_flag=-W${1#-Wno-}
6360     test_cflags $warning_flag && add_cflags_headers $1
6361 }
6362
6363 check_disable_warning_headers -Wno-deprecated-declarations
6364 check_disable_warning_headers -Wno-unused-variable
6365
6366 check_cc <<EOF && enable blocks_extension
6367 void (^block)(void);
6368 EOF
6369
6370 # add some linker flags
6371 check_ldflags -Wl,--warn-common
6372 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6373 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6374 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6375
6376 # add some strip flags
6377 check_stripflags -x
6378
6379 enabled neon_clobber_test &&
6380     check_ldflags -Wl,--wrap,avcodec_open2              \
6381                   -Wl,--wrap,avcodec_decode_audio4      \
6382                   -Wl,--wrap,avcodec_decode_video2      \
6383                   -Wl,--wrap,avcodec_decode_subtitle2   \
6384                   -Wl,--wrap,avcodec_encode_audio2      \
6385                   -Wl,--wrap,avcodec_encode_video2      \
6386                   -Wl,--wrap,avcodec_encode_subtitle    \
6387                   -Wl,--wrap,avcodec_send_packet        \
6388                   -Wl,--wrap,avcodec_receive_packet     \
6389                   -Wl,--wrap,avcodec_send_frame         \
6390                   -Wl,--wrap,avcodec_receive_frame      \
6391                   -Wl,--wrap,swr_convert                \
6392                   -Wl,--wrap,avresample_convert ||
6393     disable neon_clobber_test
6394
6395 enabled xmm_clobber_test &&
6396     check_ldflags -Wl,--wrap,avcodec_open2              \
6397                   -Wl,--wrap,avcodec_decode_audio4      \
6398                   -Wl,--wrap,avcodec_decode_video2      \
6399                   -Wl,--wrap,avcodec_decode_subtitle2   \
6400                   -Wl,--wrap,avcodec_encode_audio2      \
6401                   -Wl,--wrap,avcodec_encode_video2      \
6402                   -Wl,--wrap,avcodec_encode_subtitle    \
6403                   -Wl,--wrap,avcodec_send_packet        \
6404                   -Wl,--wrap,avcodec_receive_packet     \
6405                   -Wl,--wrap,avcodec_send_frame         \
6406                   -Wl,--wrap,avcodec_receive_frame      \
6407                   -Wl,--wrap,swr_convert                \
6408                   -Wl,--wrap,avresample_convert         \
6409                   -Wl,--wrap,sws_scale ||
6410     disable xmm_clobber_test
6411
6412 check_ld "cc" <<EOF && enable proper_dce
6413 extern const int array[512];
6414 static inline int func(void) { return array[0]; }
6415 int main(void) { return 0; }
6416 EOF
6417
6418 if enabled proper_dce; then
6419     echo "X { local: *; };" > $TMPV
6420     if test_ldflags -Wl,${version_script},$TMPV; then
6421         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6422         check_cc <<EOF && enable symver_asm_label
6423 void ff_foo(void) __asm__ ("av_foo@VERSION");
6424 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6425 EOF
6426         check_cc <<EOF && enable symver_gnu_asm
6427 __asm__(".symver ff_foo,av_foo@VERSION");
6428 void ff_foo(void) {}
6429 EOF
6430     fi
6431 fi
6432
6433 if [ -z "$optflags" ]; then
6434     if enabled small; then
6435         optflags=$cflags_size
6436     elif enabled optimizations; then
6437         optflags=$cflags_speed
6438     else
6439         optflags=$cflags_noopt
6440     fi
6441 fi
6442
6443 if [ -z "$nvccflags" ]; then
6444     nvccflags=$nvccflags_default
6445 fi
6446
6447 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6448     nvccflags="$nvccflags -m64"
6449 else
6450     nvccflags="$nvccflags -m32"
6451 fi
6452
6453 check_optflags(){
6454     check_cflags "$@"
6455     enabled lto && check_ldflags "$@"
6456 }
6457
6458 check_optflags $optflags
6459 check_optflags -fno-math-errno
6460 check_optflags -fno-signed-zeros
6461
6462 if enabled lto; then
6463     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6464     check_cflags  -flto
6465     check_ldflags -flto $cpuflags
6466     disable inline_asm_direct_symbol_refs
6467 fi
6468
6469 enabled ftrapv && check_cflags -ftrapv
6470
6471 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6472 int x;
6473 EOF
6474
6475
6476 if enabled icc; then
6477     # Just warnings, no remarks
6478     check_cflags -w1
6479     # -wd: Disable following warnings
6480     # 144, 167, 556: -Wno-pointer-sign
6481     # 188: enumerated type mixed with another type
6482     # 1292: attribute "foo" ignored
6483     # 1419: external declaration in primary source file
6484     # 10006: ignoring unknown option -fno-signed-zeros
6485     # 10148: ignoring unknown option -Wno-parentheses
6486     # 10156: ignoring option '-W'; no argument required
6487     # 13200: No EMMS instruction before call to function
6488     # 13203: No EMMS instruction before return from function
6489     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6490     # 11030: Warning unknown option --as-needed
6491     # 10156: ignoring option '-export'; no argument required
6492     check_ldflags -wd10156,11030
6493     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6494     enable ebp_available
6495     # The test above does not test linking
6496     enabled lto && disable symver_asm_label
6497     if enabled x86_32; then
6498         icc_version=$($cc -dumpversion)
6499         test ${icc_version%%.*} -ge 11 &&
6500             check_cflags -falign-stack=maintain-16-byte ||
6501             disable aligned_stack
6502     fi
6503 elif enabled ccc; then
6504     # disable some annoying warnings
6505     add_cflags -msg_disable bitnotint
6506     add_cflags -msg_disable mixfuncvoid
6507     add_cflags -msg_disable nonstandcast
6508     add_cflags -msg_disable unsupieee
6509 elif enabled gcc; then
6510     check_optflags -fno-tree-vectorize
6511     check_cflags -Werror=format-security
6512     check_cflags -Werror=implicit-function-declaration
6513     check_cflags -Werror=missing-prototypes
6514     check_cflags -Werror=return-type
6515     check_cflags -Werror=vla
6516     check_cflags -Wformat
6517     check_cflags -fdiagnostics-color=auto
6518     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6519 elif enabled llvm_gcc; then
6520     check_cflags -mllvm -stack-alignment=16
6521 elif enabled clang; then
6522     check_cflags -mllvm -stack-alignment=16
6523     check_cflags -mstack-alignment=16
6524     check_cflags -Qunused-arguments
6525     check_cflags -Werror=implicit-function-declaration
6526     check_cflags -Werror=missing-prototypes
6527     check_cflags -Werror=return-type
6528 elif enabled cparser; then
6529     add_cflags -Wno-missing-variable-declarations
6530     add_cflags -Wno-empty-statement
6531 elif enabled armcc; then
6532     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6533     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6534     # 2523: use of inline assembly is deprecated
6535     add_cflags -W${armcc_opt},--diag_suppress=2523
6536     add_cflags -W${armcc_opt},--diag_suppress=1207
6537     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6538     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6539     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6540     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6541 elif enabled tms470; then
6542     add_cflags -pds=824 -pds=837
6543     disable inline_asm
6544 elif enabled pathscale; then
6545     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6546     disable inline_asm
6547 elif enabled_any msvc icl; then
6548     enabled x86_32 && disable aligned_stack
6549     enabled_all x86_32 debug && add_cflags -Oy-
6550     enabled debug && add_ldflags -debug
6551     enable pragma_deprecated
6552     if enabled icl; then
6553         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6554         # (correctly) on icl 13.x.
6555         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6556             add_cflags -Qansi-alias
6557         # Some inline asm is not compilable in debug
6558         if enabled debug; then
6559             disable ebp_available
6560             disable ebx_available
6561         fi
6562     fi
6563     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6564     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6565     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6566     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6567     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6568     # MSVC 2013 and newer can handle it fine.
6569     # If this declspec fails, force including stdlib.h before the restrict redefinition
6570     # happens in config.h.
6571     if [ $_restrict != restrict ]; then
6572         check_cc <<EOF || add_cflags -FIstdlib.h
6573 __declspec($_restrict) void* foo(int);
6574 EOF
6575     fi
6576     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6577     # Issue has been fixed in MSVC v19.00.24218.
6578     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6579         check_cflags -d2SSAOptimizer-
6580     # enable utf-8 source processing on VS2015 U2 and newer
6581     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6582         add_cflags -utf-8
6583 fi
6584
6585 for pfx in "" host_; do
6586     varname=${pfx%_}cc_type
6587     eval "type=\$$varname"
6588     if [ "$type" = "msvc" ]; then
6589         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6590 static inline int foo(int a) { return a; }
6591 EOF
6592     fi
6593 done
6594
6595 case $as_type in
6596     clang)
6597         add_asflags -Qunused-arguments
6598     ;;
6599 esac
6600
6601 case $ld_type in
6602     clang)
6603         check_ldflags -Qunused-arguments
6604     ;;
6605 esac
6606
6607 case $target_os in
6608     osf1)
6609         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6610     ;;
6611 esac
6612
6613 enable frame_thread_encoder
6614
6615 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6616
6617 check_deps $CONFIG_LIST       \
6618            $CONFIG_EXTRA      \
6619            $HAVE_LIST         \
6620            $ALL_COMPONENTS    \
6621
6622 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"
6623
6624
6625 if test $target_os = "haiku"; then
6626     disable memalign
6627     disable posix_memalign
6628 fi
6629
6630 flatten_extralibs(){
6631     unset nested_entries
6632     list_name=$1
6633     eval list=\$${1}
6634     for entry in $list; do
6635         entry_copy=$entry
6636         resolve entry_copy
6637         append nested_entries $(filter '*_extralibs' $entry_copy)
6638         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6639         eval $entry="\$flat_entries"
6640     done
6641     append $list_name "$nested_entries"
6642
6643     resolve nested_entries
6644     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6645         flatten_extralibs $list_name
6646     fi
6647 }
6648
6649 for linkunit in $LIBRARY_LIST; do
6650     unset current_extralibs
6651     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6652     for comp in ${components}; do
6653         enabled $comp || continue
6654         comp_extralibs="${comp}_extralibs"
6655         append current_extralibs $comp_extralibs
6656     done
6657     eval prepend ${linkunit}_extralibs $current_extralibs
6658 done
6659
6660 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6661     flatten_extralibs ${linkunit}_extralibs
6662     unique  ${linkunit}_extralibs
6663     resolve ${linkunit}_extralibs
6664     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
6665 done
6666
6667 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6668
6669 for thread in $THREADS_LIST; do
6670     if enabled $thread; then
6671         test -n "$thread_type" &&
6672             die "ERROR: Only one thread type must be selected." ||
6673             thread_type="$thread"
6674     fi
6675 done
6676
6677 if disabled stdatomic_h; then
6678     if enabled atomics_gcc; then
6679         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6680     elif enabled atomics_win32; then
6681         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6682     elif enabled atomics_suncc; then
6683         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6684     elif enabled pthreads; then
6685         add_compat atomics/pthread/stdatomic.o
6686         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6687     else
6688         enabled threads && die "Threading is enabled, but no atomics are available"
6689         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6690     fi
6691 fi
6692
6693 # Check if requested libraries were found.
6694 for lib in $AUTODETECT_LIBS; do
6695     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6696 done
6697
6698 enabled zlib && add_cppflags -DZLIB_CONST
6699
6700 # conditional library dependencies, in linking order
6701 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6702 enabled afir_filter         && prepend avfilter_deps "avcodec"
6703 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6704 enabled aresample_filter    && prepend avfilter_deps "swresample"
6705 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6706 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6707 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6708 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6709 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6710 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6711 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6712 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6713 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6714 enabled pan_filter          && prepend avfilter_deps "swresample"
6715 enabled pp_filter           && prepend avfilter_deps "postproc"
6716 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6717 enabled resample_filter && prepend avfilter_deps "avresample"
6718 enabled sab_filter          && prepend avfilter_deps "swscale"
6719 enabled scale_filter    && prepend avfilter_deps "swscale"
6720 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6721 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6722 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6723 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6724 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6725 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6726 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6727 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6728 enabled spp_filter          && prepend avfilter_deps "avcodec"
6729 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6730 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6731 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6732
6733 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6734
6735 #FIXME
6736 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6737
6738 enabled opus_decoder    && prepend avcodec_deps "swresample"
6739
6740 expand_deps(){
6741     lib_deps=${1}_deps
6742     eval "deps=\$$lib_deps"
6743     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6744     unique $lib_deps
6745 }
6746
6747 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6748 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6749
6750 map 'expand_deps $v' $LIBRARY_LIST
6751
6752 license="LGPL version 2.1 or later"
6753 if enabled nonfree; then
6754     license="nonfree and unredistributable"
6755 elif enabled gplv3; then
6756     license="GPL version 3 or later"
6757 elif enabled lgplv3; then
6758     license="LGPL version 3 or later"
6759 elif enabled gpl; then
6760     license="GPL version 2 or later"
6761 fi
6762
6763 if test "$quiet" != "yes"; then
6764
6765 echo "install prefix            $prefix"
6766 echo "source path               $source_path"
6767 echo "C compiler                $cc"
6768 echo "C library                 $libc_type"
6769 if test "$host_cc" != "$cc"; then
6770     echo "host C compiler           $host_cc"
6771     echo "host C library            $host_libc_type"
6772 fi
6773 echo "ARCH                      $arch ($cpu)"
6774 if test "$build_suffix" != ""; then
6775     echo "build suffix              $build_suffix"
6776 fi
6777 if test "$progs_suffix" != ""; then
6778     echo "progs suffix              $progs_suffix"
6779 fi
6780 if test "$extra_version" != ""; then
6781     echo "version string suffix     $extra_version"
6782 fi
6783 echo "big-endian                ${bigendian-no}"
6784 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6785 if enabled x86; then
6786     echo "standalone assembly       ${x86asm-no}"
6787     echo "x86 assembler             ${x86asmexe}"
6788     echo "MMX enabled               ${mmx-no}"
6789     echo "MMXEXT enabled            ${mmxext-no}"
6790     echo "3DNow! enabled            ${amd3dnow-no}"
6791     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6792     echo "SSE enabled               ${sse-no}"
6793     echo "SSSE3 enabled             ${ssse3-no}"
6794     echo "AESNI enabled             ${aesni-no}"
6795     echo "AVX enabled               ${avx-no}"
6796     echo "AVX2 enabled              ${avx2-no}"
6797     echo "XOP enabled               ${xop-no}"
6798     echo "FMA3 enabled              ${fma3-no}"
6799     echo "FMA4 enabled              ${fma4-no}"
6800     echo "i686 features enabled     ${i686-no}"
6801     echo "CMOV is fast              ${fast_cmov-no}"
6802     echo "EBX available             ${ebx_available-no}"
6803     echo "EBP available             ${ebp_available-no}"
6804 fi
6805 if enabled aarch64; then
6806     echo "NEON enabled              ${neon-no}"
6807     echo "VFP enabled               ${vfp-no}"
6808 fi
6809 if enabled arm; then
6810     echo "ARMv5TE enabled           ${armv5te-no}"
6811     echo "ARMv6 enabled             ${armv6-no}"
6812     echo "ARMv6T2 enabled           ${armv6t2-no}"
6813     echo "VFP enabled               ${vfp-no}"
6814     echo "NEON enabled              ${neon-no}"
6815     echo "THUMB enabled             ${thumb-no}"
6816 fi
6817 if enabled mips; then
6818     echo "MIPS FPU enabled          ${mipsfpu-no}"
6819     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6820     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6821     echo "MIPS MSA enabled          ${msa-no}"
6822     echo "LOONGSON MMI enabled      ${mmi-no}"
6823 fi
6824 if enabled ppc; then
6825     echo "AltiVec enabled           ${altivec-no}"
6826     echo "VSX enabled               ${vsx-no}"
6827     echo "POWER8 enabled            ${power8-no}"
6828     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6829     echo "dcbzl available           ${dcbzl-no}"
6830 fi
6831 echo "debug symbols             ${debug-no}"
6832 echo "strip symbols             ${stripping-no}"
6833 echo "optimize for size         ${small-no}"
6834 echo "optimizations             ${optimizations-no}"
6835 echo "static                    ${static-no}"
6836 echo "shared                    ${shared-no}"
6837 echo "postprocessing support    ${postproc-no}"
6838 echo "network support           ${network-no}"
6839 echo "threading support         ${thread_type-no}"
6840 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6841 echo "texi2html enabled         ${texi2html-no}"
6842 echo "perl enabled              ${perl-no}"
6843 echo "pod2man enabled           ${pod2man-no}"
6844 echo "makeinfo enabled          ${makeinfo-no}"
6845 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6846 test -n "$random_seed" &&
6847     echo "random seed               ${random_seed}"
6848 echo
6849
6850 echo "External libraries:"
6851 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6852 echo
6853
6854 echo "External libraries providing hardware acceleration:"
6855 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6856 echo
6857
6858 echo "Libraries:"
6859 print_enabled '' $LIBRARY_LIST | print_in_columns
6860 echo
6861
6862 echo "Programs:"
6863 print_enabled '' $PROGRAM_LIST | print_in_columns
6864 echo
6865
6866 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6867     echo "Enabled ${type}s:"
6868     eval list=\$$(toupper $type)_LIST
6869     print_enabled '_*' $list | print_in_columns
6870     echo
6871 done
6872
6873 if test -n "$ignore_tests"; then
6874     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6875     echo "Ignored FATE tests:"
6876     echo $ignore_tests | print_in_columns
6877     echo
6878 fi
6879
6880 echo "License: $license"
6881
6882 echo "Creating configuration files ..."
6883
6884 fi # test "$quiet" != "yes"
6885
6886 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6887
6888 enabled stripping || strip="echo skipping strip"
6889 enabled stripping || striptype=""
6890
6891 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6892
6893 cat > ffbuild/config.mak <<EOF
6894 # Automatically generated by configure - do not modify!
6895 ifndef FFMPEG_CONFIG_MAK
6896 FFMPEG_CONFIG_MAK=1
6897 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6898 prefix=$prefix
6899 LIBDIR=\$(DESTDIR)$libdir
6900 SHLIBDIR=\$(DESTDIR)$shlibdir
6901 INCDIR=\$(DESTDIR)$incdir
6902 BINDIR=\$(DESTDIR)$bindir
6903 DATADIR=\$(DESTDIR)$datadir
6904 DOCDIR=\$(DESTDIR)$docdir
6905 MANDIR=\$(DESTDIR)$mandir
6906 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6907 INSTALL_NAME_DIR=$install_name_dir
6908 SRC_PATH=$source_path
6909 SRC_LINK=$source_link
6910 ifndef MAIN_MAKEFILE
6911 SRC_PATH:=\$(SRC_PATH:.%=..%)
6912 endif
6913 CC_IDENT=$cc_ident
6914 ARCH=$arch
6915 INTRINSICS=$intrinsics
6916 CC=$cc
6917 CXX=$cxx
6918 AS=$as
6919 OBJCC=$objcc
6920 LD=$ld
6921 DEPCC=$dep_cc
6922 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6923 DEPAS=$as
6924 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6925 X86ASM=$x86asmexe
6926 DEPX86ASM=$x86asmexe
6927 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6928 AR=$ar
6929 ARFLAGS=$arflags
6930 AR_O=$ar_o
6931 RANLIB=$ranlib
6932 STRIP=$strip
6933 STRIPTYPE=$striptype
6934 NVCC=$nvcc
6935 CP=cp -p
6936 LN_S=$ln_s
6937 CPPFLAGS=$CPPFLAGS
6938 CFLAGS=$CFLAGS
6939 CXXFLAGS=$CXXFLAGS
6940 OBJCFLAGS=$OBJCFLAGS
6941 ASFLAGS=$ASFLAGS
6942 NVCCFLAGS=$nvccflags
6943 AS_C=$AS_C
6944 AS_O=$AS_O
6945 OBJCC_C=$OBJCC_C
6946 OBJCC_E=$OBJCC_E
6947 OBJCC_O=$OBJCC_O
6948 CC_C=$CC_C
6949 CC_E=$CC_E
6950 CC_O=$CC_O
6951 CXX_C=$CXX_C
6952 CXX_O=$CXX_O
6953 NVCC_C=$NVCC_C
6954 NVCC_O=$NVCC_O
6955 LD_O=$LD_O
6956 X86ASM_O=$X86ASM_O
6957 LD_LIB=$LD_LIB
6958 LD_PATH=$LD_PATH
6959 DLLTOOL=$dlltool
6960 WINDRES=$windres
6961 DEPWINDRES=$dep_cc
6962 DOXYGEN=$doxygen
6963 LDFLAGS=$LDFLAGS
6964 LDEXEFLAGS=$LDEXEFLAGS
6965 LDSOFLAGS=$LDSOFLAGS
6966 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6967 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6968 X86ASMFLAGS=$X86ASMFLAGS
6969 BUILDSUF=$build_suffix
6970 PROGSSUF=$progs_suffix
6971 FULLNAME=$FULLNAME
6972 LIBPREF=$LIBPREF
6973 LIBSUF=$LIBSUF
6974 LIBNAME=$LIBNAME
6975 SLIBPREF=$SLIBPREF
6976 SLIBSUF=$SLIBSUF
6977 EXESUF=$EXESUF
6978 EXTRA_VERSION=$extra_version
6979 CCDEP=$CCDEP
6980 CXXDEP=$CXXDEP
6981 CCDEP_FLAGS=$CCDEP_FLAGS
6982 ASDEP=$ASDEP
6983 ASDEP_FLAGS=$ASDEP_FLAGS
6984 X86ASMDEP=$X86ASMDEP
6985 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6986 CC_DEPFLAGS=$CC_DEPFLAGS
6987 AS_DEPFLAGS=$AS_DEPFLAGS
6988 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6989 HOSTCC=$host_cc
6990 HOSTLD=$host_ld
6991 HOSTCFLAGS=$host_cflags
6992 HOSTCPPFLAGS=$host_cppflags
6993 HOSTEXESUF=$HOSTEXESUF
6994 HOSTLDFLAGS=$host_ldflags
6995 HOSTEXTRALIBS=$host_extralibs
6996 DEPHOSTCC=$host_cc
6997 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6998 HOSTCCDEP=$HOSTCCDEP
6999 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7000 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7001 HOSTCC_C=$HOSTCC_C
7002 HOSTCC_O=$HOSTCC_O
7003 HOSTLD_O=$HOSTLD_O
7004 TARGET_EXEC=$target_exec $target_exec_args
7005 TARGET_PATH=$target_path
7006 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7007 CFLAGS-ffplay=${sdl2_cflags}
7008 CFLAGS_HEADERS=$CFLAGS_HEADERS
7009 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7010 EXTRALIBS=$extralibs
7011 COMPAT_OBJS=$compat_objs
7012 INSTALL=$install
7013 LIBTARGET=${LIBTARGET}
7014 SLIBNAME=${SLIBNAME}
7015 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7016 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7017 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7018 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7019 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7020 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7021 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7022 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7023 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7024 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7025 NOREDZONE_FLAGS=$noredzone_flags
7026 LIBFUZZER_PATH=$libfuzzer_path
7027 IGNORE_TESTS=$ignore_tests
7028 EOF
7029
7030 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7031
7032 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7033     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7034 done
7035
7036 cat > $TMPH <<EOF
7037 /* Automatically generated by configure - do not modify! */
7038 #ifndef FFMPEG_CONFIG_H
7039 #define FFMPEG_CONFIG_H
7040 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7041 #define FFMPEG_LICENSE "$(c_escape $license)"
7042 #define CONFIG_THIS_YEAR 2017
7043 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7044 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7045 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7046 #define av_restrict $_restrict
7047 #define EXTERN_PREFIX "${extern_prefix}"
7048 #define EXTERN_ASM ${extern_prefix}
7049 #define BUILDSUF "$build_suffix"
7050 #define SLIBSUF "$SLIBSUF"
7051 #define HAVE_MMX2 HAVE_MMXEXT
7052 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7053 EOF
7054
7055 test -n "$assert_level" &&
7056     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7057
7058 test -n "$malloc_prefix" &&
7059     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7060
7061 if enabled x86asm; then
7062     append config_files $TMPASM
7063     printf '' >$TMPASM
7064 fi
7065
7066 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7067
7068
7069 mkdir -p doc
7070 mkdir -p tests
7071 mkdir -p tests/api
7072 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7073
7074 print_config ARCH_   "$config_files" $ARCH_LIST
7075 print_config HAVE_   "$config_files" $HAVE_LIST
7076 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7077                                      $CONFIG_EXTRA      \
7078                                      $ALL_COMPONENTS    \
7079
7080 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7081 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7082
7083 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7084 cp_if_changed $TMPH config.h
7085 touch ffbuild/.config
7086
7087 enabled x86asm && cp_if_changed $TMPASM config.asm
7088
7089 cat > $TMPH <<EOF
7090 /* Generated by ffconf */
7091 #ifndef AVUTIL_AVCONFIG_H
7092 #define AVUTIL_AVCONFIG_H
7093 EOF
7094
7095 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7096
7097 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7098
7099 cp_if_changed $TMPH libavutil/avconfig.h
7100
7101 # generate the lists of enabled components
7102 print_enabled_components(){
7103     file=$1
7104     struct_name=$2
7105     name=$3
7106     shift 3
7107     echo "static const $struct_name * const $name[] = {" > $TMPH
7108     for c in $*; do
7109         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7110     done
7111     echo "    NULL };" >> $TMPH
7112     cp_if_changed $TMPH $file
7113 }
7114
7115 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7116 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7117
7118 if test -n "$WARNINGS"; then
7119     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7120     enabled fatal_warnings && exit 1
7121 fi
7122
7123 # Settings for pkg-config files
7124
7125 cat > ffbuild/config.sh <<EOF
7126 # Automatically generated by configure - do not modify!
7127 shared=$shared
7128 build_suffix=$build_suffix
7129 prefix=$prefix
7130 libdir=$libdir
7131 incdir=$incdir
7132 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7133 source_path=${source_path}
7134 LIBPREF=${LIBPREF}
7135 LIBSUF=${LIBSUF}
7136 extralibs_avutil="$avutil_extralibs"
7137 extralibs_avcodec="$avcodec_extralibs"
7138 extralibs_avformat="$avformat_extralibs"
7139 extralibs_avdevice="$avdevice_extralibs"
7140 extralibs_avfilter="$avfilter_extralibs"
7141 extralibs_avresample="$avresample_extralibs"
7142 extralibs_postproc="$postproc_extralibs"
7143 extralibs_swscale="$swscale_extralibs"
7144 extralibs_swresample="$swresample_extralibs"
7145 EOF
7146
7147 for lib in $LIBRARY_LIST; do
7148     lib_deps="$(eval echo \$${lib}_deps)"
7149     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7150 done