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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --disable-jack           disable libjack support [autodetect]
 221   --enable-jni             enable JNI support [no]
 222   --enable-ladspa          enable LADSPA audio filtering [no]
 223   --enable-libass          enable libass subtitles rendering,
 224                            needed for subtitles and ass filter [no]
 225   --enable-libbluray       enable BluRay reading using libbluray [no]
 226   --enable-libbs2b         enable bs2b DSP library [no]
 227   --enable-libcaca         enable textual display using libcaca [no]
 228   --enable-libcelt         enable CELT decoding via libcelt [no]
 229   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 230   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 231                            and libraw1394 [no]
 232   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 233   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 234   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 235   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 236   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 237   --enable-libgme          enable Game Music Emu via libgme [no]
 238   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 239   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 240   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --disable-lzma           disable lzma [autodetect]
 287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 289   --enable-mediacodec      enable Android MediaCodec support [no]
 290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 291   --enable-openal          enable OpenAL 1.1 capture support [no]
 292   --enable-opencl          enable OpenCL code
 293   --enable-opengl          enable OpenGL rendering [no]
 294   --enable-openssl         enable openssl, needed for https support
 295                            if gnutls is not used [no]
 296   --disable-sndio          disable sndio support [autodetect]
 297   --disable-schannel       disable SChannel SSP, needed for TLS support on
 298                            Windows if openssl and gnutls are not used [autodetect]
 299   --disable-sdl2           disable sdl2 [autodetect]
 300   --disable-securetransport disable Secure Transport, needed for TLS support
 301                            on OSX if openssl and gnutls are not used [autodetect]
 302   --disable-xlib           disable xlib [autodetect]
 303   --disable-zlib           disable zlib [autodetect]
 304
 305   The following libraries provide various hardware acceleration features:
 306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 312   --enable-libdrm          enable DRM code (Linux) [no]
 313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 316   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 317   --enable-omx             enable OpenMAX IL code [no]
 318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 319   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 320   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 321   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 324
 325 Toolchain options:
 326   --arch=ARCH              select architecture [$arch]
 327   --cpu=CPU                select the minimum required CPU (affects
 328                            instruction selection, may crash on older CPUs)
 329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 330   --progs-suffix=SUFFIX    program name suffix []
 331   --enable-cross-compile   assume a cross-compiler is used
 332   --sysroot=PATH           root of cross-build tree
 333   --sysinclude=PATH        location of cross-build system headers
 334   --target-os=OS           compiler targets OS [$target_os]
 335   --target-exec=CMD        command to run executables on target
 336   --target-path=DIR        path to view of build directory on target
 337   --target-samples=DIR     path to samples directory on target
 338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 339   --toolchain=NAME         set tool defaults according to NAME
 340   --nm=NM                  use nm tool NM [$nm_default]
 341   --ar=AR                  use archive tool AR [$ar_default]
 342   --as=AS                  use assembler AS [$as_default]
 343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 344   --strip=STRIP            use strip tool STRIP [$strip_default]
 345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 347   --cc=CC                  use C compiler CC [$cc_default]
 348   --cxx=CXX                use C compiler CXX [$cxx_default]
 349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 352   --ld=LD                  use linker LD [$ld_default]
 353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 357   --host-cc=HOSTCC         use host C compiler HOSTCC
 358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 360   --host-ld=HOSTLD         use host linker HOSTLD
 361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 362   --host-libs=HLIBS        use libs HLIBS when linking for host
 363   --host-os=OS             compiler host OS [$target_os]
 364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 369   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 371   --extra-version=STRING   version string suffix []
 372   --optflags=OPTFLAGS      override optimization-related compiler flags
 373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 374   --build-suffix=SUFFIX    library name suffix []
 375   --enable-pic             build position-independent code
 376   --enable-thumb           compile for Thumb instruction set
 377   --enable-lto             use link-time optimization
 378   --env="ENV=override"     override the environment variables
 379
 380 Advanced options (experts only):
 381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 382   --custom-allocator=NAME  use a supported custom allocator
 383   --disable-symver         disable symbol versioning
 384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 385   --disable-safe-bitstream-reader
 386                            disable buffer boundary checking in bitreaders
 387                            (faster, but may crash)
 388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 389
 390 Optimization options (experts only):
 391   --disable-asm            disable all assembly optimizations
 392   --disable-altivec        disable AltiVec optimizations
 393   --disable-vsx            disable VSX optimizations
 394   --disable-power8         disable POWER8 optimizations
 395   --disable-amd3dnow       disable 3DNow! optimizations
 396   --disable-amd3dnowext    disable 3DNow! extended optimizations
 397   --disable-mmx            disable MMX optimizations
 398   --disable-mmxext         disable MMXEXT optimizations
 399   --disable-sse            disable SSE optimizations
 400   --disable-sse2           disable SSE2 optimizations
 401   --disable-sse3           disable SSE3 optimizations
 402   --disable-ssse3          disable SSSE3 optimizations
 403   --disable-sse4           disable SSE4 optimizations
 404   --disable-sse42          disable SSE4.2 optimizations
 405   --disable-avx            disable AVX optimizations
 406   --disable-xop            disable XOP optimizations
 407   --disable-fma3           disable FMA3 optimizations
 408   --disable-fma4           disable FMA4 optimizations
 409   --disable-avx2           disable AVX2 optimizations
 410   --disable-aesni          disable AESNI optimizations
 411   --disable-armv5te        disable armv5te optimizations
 412   --disable-armv6          disable armv6 optimizations
 413   --disable-armv6t2        disable armv6t2 optimizations
 414   --disable-vfp            disable VFP optimizations
 415   --disable-neon           disable NEON optimizations
 416   --disable-inline-asm     disable use of inline assembly
 417   --disable-x86asm         disable use of standalone x86 assembly
 418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 420   --disable-msa            disable MSA optimizations
 421   --disable-mipsfpu        disable floating point MIPS optimizations
 422   --disable-mmi            disable Loongson SIMD optimizations
 423   --disable-fast-unaligned consider unaligned accesses slow
 424
 425 Developer options (useful when working on FFmpeg itself):
 426   --disable-debug          disable debugging symbols
 427   --enable-debug=LEVEL     set the debug level [$debuglevel]
 428   --disable-optimizations  disable compiler optimizations
 429   --enable-extra-warnings  enable more compiler warnings
 430   --disable-stripping      disable stripping of executables and shared libraries
 431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 432                            2 causes a slowdown at runtime.
 433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 435                            leaks and errors, using the specified valgrind binary.
 436                            Cannot be combined with --target-exec
 437   --enable-ftrapv          Trap arithmetic overflows
 438   --samples=PATH           location of test samples for FATE, if not set use
 439                            \$FATE_SAMPLES at make invocation time.
 440   --enable-neon-clobber-test check NEON registers for clobbering (should be
 441                            used only for debugging purposes)
 442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 443                            should be used only for debugging purposes)
 444   --enable-random          randomly enable/disable components
 445   --disable-random
 446   --enable-random=LIST     randomly enable/disable specific components or
 447   --disable-random=LIST    component groups. LIST is a comma-separated list
 448                            of NAME[:PROB] entries where NAME is a component
 449                            (group) and PROB the probability associated with
 450                            NAME (default 0.5).
 451   --random-seed=VALUE      seed value for --enable/disable-random
 452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 453                            (only applies to --disable-optimizations builds)
 454   --enable-osfuzz          Enable building fuzzer tool
 455   --libfuzzer=PATH         path to libfuzzer
 456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 457                            in the name) of tests whose result is ignored
 458   --enable-linux-perf      enable Linux Performance Monitor API
 459
 460 NOTE: Object files are built at the place where configure is launched.
 461 EOF
 462   exit 0
 463 }
 464
 465 quotes='""'
 466 if test -t 1 && which tput >/dev/null 2>&1; then
 467     ncolors=$(tput colors)
 468     if test -n "$ncolors" && test $ncolors -ge 8; then
 469         bold_color=$(tput bold)
 470         warn_color=$(tput setaf 3)
 471         error_color=$(tput setaf 1)
 472         reset_color=$(tput sgr0)
 473     fi
 474     # 72 used instead of 80 since that's the default of pr
 475     ncols=$(tput cols)
 476 fi
 477 : ${ncols:=72}
 478
 479 log(){
 480     echo "$@" >> $logfile
 481 }
 482
 483 log_file(){
 484     log BEGIN $1
 485     pr -n -t $1 >> $logfile
 486     log END $1
 487 }
 488
 489 warn(){
 490     log "WARNING: $*"
 491     WARNINGS="${WARNINGS}WARNING: $*\n"
 492 }
 493
 494 die(){
 495     log "$@"
 496     echo "$error_color$bold_color$@$reset_color"
 497     cat <<EOF
 498
 499 If you think configure made a mistake, make sure you are using the latest
 500 version from Git.  If the latest version fails, report the problem to the
 501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 502 EOF
 503     if disabled logging; then
 504         cat <<EOF
 505 Rerun configure with logging enabled (do not use --disable-logging), and
 506 include the log this produces with your report.
 507 EOF
 508     else
 509         cat <<EOF
 510 Include the log file "$logfile" produced by configure as this will help
 511 solve the problem.
 512 EOF
 513     fi
 514     exit 1
 515 }
 516
 517 # Avoid locale weirdness, besides we really just want to translate ASCII.
 518 toupper(){
 519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 520 }
 521
 522 tolower(){
 523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 524 }
 525
 526 c_escape(){
 527     echo "$*" | sed 's/["\\]/\\\0/g'
 528 }
 529
 530 sh_quote(){
 531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 533     echo "$v"
 534 }
 535
 536 cleanws(){
 537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 538 }
 539
 540 filter(){
 541     pat=$1
 542     shift
 543     for v; do
 544         eval "case $v in $pat) printf '%s ' $v ;; esac"
 545     done
 546 }
 547
 548 filter_out(){
 549     pat=$1
 550     shift
 551     for v; do
 552         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 553     done
 554 }
 555
 556 map(){
 557     m=$1
 558     shift
 559     for v; do eval $m; done
 560 }
 561
 562 add_suffix(){
 563     suffix=$1
 564     shift
 565     for v; do echo ${v}${suffix}; done
 566 }
 567
 568 set_all(){
 569     value=$1
 570     shift
 571     for var in $*; do
 572         eval $var=$value
 573     done
 574 }
 575
 576 set_weak(){
 577     value=$1
 578     shift
 579     for var; do
 580         eval : \${$var:=$value}
 581     done
 582 }
 583
 584 sanitize_var_name(){
 585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 586 }
 587
 588 set_safe(){
 589     var=$1
 590     shift
 591     eval $(sanitize_var_name "$var")='$*'
 592 }
 593
 594 get_safe(){
 595     eval echo \$$(sanitize_var_name "$1")
 596 }
 597
 598 pushvar(){
 599     for pvar in $*; do
 600         eval level=\${${pvar}_level:=0}
 601         eval ${pvar}_${level}="\$$pvar"
 602         eval ${pvar}_level=$(($level+1))
 603     done
 604 }
 605
 606 popvar(){
 607     for pvar in $*; do
 608         eval level=\${${pvar}_level:-0}
 609         test $level = 0 && continue
 610         eval level=$(($level-1))
 611         eval $pvar="\${${pvar}_${level}}"
 612         eval ${pvar}_level=$level
 613         eval unset ${pvar}_${level}
 614     done
 615 }
 616
 617 request(){
 618     for var in $*; do
 619         eval ${var}_requested=yes
 620         eval $var=
 621     done
 622 }
 623
 624 enable(){
 625     set_all yes $*
 626 }
 627
 628 disable(){
 629     set_all no $*
 630 }
 631
 632 enable_weak(){
 633     set_weak yes $*
 634 }
 635
 636 disable_weak(){
 637     set_weak no $*
 638 }
 639
 640 enable_safe(){
 641     for var; do
 642         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 643     done
 644 }
 645
 646 disable_safe(){
 647     for var; do
 648         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 649     done
 650 }
 651
 652 do_enable_deep(){
 653     for var; do
 654         enabled $var && continue
 655         eval sel="\$${var}_select"
 656         eval sgs="\$${var}_suggest"
 657         pushvar var sgs
 658         enable_deep $sel
 659         popvar sgs
 660         enable_deep_weak $sgs
 661         popvar var
 662     done
 663 }
 664
 665 enable_deep(){
 666     do_enable_deep $*
 667     enable $*
 668 }
 669
 670 enable_deep_weak(){
 671     for var; do
 672         disabled $var && continue
 673         pushvar var
 674         do_enable_deep $var
 675         popvar var
 676         enable_weak $var
 677     done
 678 }
 679
 680 requested(){
 681     test "${1#!}" = "$1" && op='=' || op=!=
 682     eval test "x\$${1#!}_requested" $op "xyes"
 683 }
 684
 685 enabled(){
 686     test "${1#!}" = "$1" && op='=' || op=!=
 687     eval test "x\$${1#!}" $op "xyes"
 688 }
 689
 690 disabled(){
 691     test "${1#!}" = "$1" && op='=' || op=!=
 692     eval test "x\$${1#!}" $op "xno"
 693 }
 694
 695 enabled_all(){
 696     for opt; do
 697         enabled $opt || return 1
 698     done
 699 }
 700
 701 disabled_all(){
 702     for opt; do
 703         disabled $opt || return 1
 704     done
 705 }
 706
 707 enabled_any(){
 708     for opt; do
 709         enabled $opt && return 0
 710     done
 711 }
 712
 713 disabled_any(){
 714     for opt; do
 715         disabled $opt && return 0
 716     done
 717     return 1
 718 }
 719
 720 set_default(){
 721     for opt; do
 722         eval : \${$opt:=\$${opt}_default}
 723     done
 724 }
 725
 726 is_in(){
 727     value=$1
 728     shift
 729     for var in $*; do
 730         [ $var = $value ] && return 0
 731     done
 732     return 1
 733 }
 734
 735 do_check_deps(){
 736     for cfg; do
 737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 738         disabled ${cfg}_checking && continue
 739         enable ${cfg}_checking
 740         append allopts $cfg
 741
 742         eval dep_all="\$${cfg}_deps"
 743         eval dep_any="\$${cfg}_deps_any"
 744         eval dep_con="\$${cfg}_conflict"
 745         eval dep_sel="\$${cfg}_select"
 746         eval dep_sgs="\$${cfg}_suggest"
 747         eval dep_ifa="\$${cfg}_if"
 748         eval dep_ifn="\$${cfg}_if_any"
 749
 750         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 751         do_check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 752         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 753
 754         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 755         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 756         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 757         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 758         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 759         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 760
 761         if enabled $cfg; then
 762             enable_deep $dep_sel
 763             enable_deep_weak $dep_sgs
 764         fi
 765
 766         disable ${cfg}_checking
 767     done
 768 }
 769
 770 check_deps(){
 771     unset allopts
 772
 773     do_check_deps "$@"
 774
 775     for cfg in $allopts; do
 776         enabled $cfg || continue
 777         eval dep_extralibs="\$${cfg}_extralibs"
 778         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 779     done
 780 }
 781
 782 print_config(){
 783     pfx=$1
 784     files=$2
 785     shift 2
 786     map 'eval echo "$v \${$v:-no}"' "$@" |
 787     awk "BEGIN { split(\"$files\", files) }
 788         {
 789             c = \"$pfx\" toupper(\$1);
 790             v = \$2;
 791             sub(/yes/, 1, v);
 792             sub(/no/,  0, v);
 793             for (f in files) {
 794                 file = files[f];
 795                 if (file ~ /\\.h\$/) {
 796                     printf(\"#define %s %d\\n\", c, v) >>file;
 797                 } else if (file ~ /\\.asm\$/) {
 798                     printf(\"%%define %s %d\\n\", c, v) >>file;
 799                 } else if (file ~ /\\.mak\$/) {
 800                     n = -v ? \"\" : \"!\";
 801                     printf(\"%s%s=yes\\n\", n, c) >>file;
 802                 } else if (file ~ /\\.texi\$/) {
 803                     pre = -v ? \"\" : \"@c \";
 804                     yesno = \$2;
 805                     c2 = tolower(c);
 806                     gsub(/_/, \"-\", c2);
 807                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 808                 }
 809             }
 810         }"
 811 }
 812
 813 print_enabled(){
 814     suf=$1
 815     shift
 816     for v; do
 817         enabled $v && printf "%s\n" ${v%$suf}
 818     done
 819 }
 820
 821 append(){
 822     var=$1
 823     shift
 824     eval "$var=\"\$$var $*\""
 825 }
 826
 827 prepend(){
 828     var=$1
 829     shift
 830     eval "$var=\"$* \$$var\""
 831 }
 832
 833 unique(){
 834     var=$1
 835     uniq_list=""
 836     for tok in $(eval echo \$$var); do
 837         uniq_list="$(filter_out $tok $uniq_list) $tok"
 838     done
 839     eval "$var=\"${uniq_list}\""
 840 }
 841
 842 add_cppflags(){
 843     append CPPFLAGS "$@"
 844 }
 845
 846 add_cflags(){
 847     append CFLAGS $($cflags_filter "$@")
 848 }
 849
 850 add_cflags_headers(){
 851     append CFLAGS_HEADERS $($cflags_filter "$@")
 852 }
 853
 854 add_cxxflags(){
 855     append CXXFLAGS $($cflags_filter "$@")
 856 }
 857
 858 add_asflags(){
 859     append ASFLAGS $($asflags_filter "$@")
 860 }
 861
 862 add_objcflags(){
 863     append OBJCFLAGS $($objcflags_filter "$@")
 864 }
 865
 866 add_ldflags(){
 867     append LDFLAGS $($ldflags_filter "$@")
 868 }
 869
 870 add_ldexeflags(){
 871     append LDEXEFLAGS $($ldflags_filter "$@")
 872 }
 873
 874 add_ldlibflags(){
 875     append LDLIBFLAGS $($ldflags_filter "$@")
 876 }
 877
 878 add_stripflags(){
 879     append ASMSTRIPFLAGS "$@"
 880 }
 881
 882 add_extralibs(){
 883     prepend extralibs $($ldflags_filter "$@")
 884 }
 885
 886 add_host_cppflags(){
 887     append host_cppflags "$@"
 888 }
 889
 890 add_host_cflags(){
 891     append host_cflags $($host_cflags_filter "$@")
 892 }
 893
 894 add_host_ldflags(){
 895     append host_ldflags $($host_ldflags_filter "$@")
 896 }
 897
 898 add_compat(){
 899     append compat_objs $1
 900     shift
 901     map 'add_cppflags -D$v' "$@"
 902 }
 903
 904 check_cmd(){
 905     log "$@"
 906     "$@" >> $logfile 2>&1
 907 }
 908
 909 check_stat(){
 910     log check_stat "$@"
 911     stat "$1" >> $logfile 2>&1
 912 }
 913
 914 cc_o(){
 915     eval printf '%s\\n' $CC_O
 916 }
 917
 918 cc_e(){
 919     eval printf '%s\\n' $CC_E
 920 }
 921
 922 check_cc(){
 923     log check_cc "$@"
 924     cat > $TMPC
 925     log_file $TMPC
 926     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 927 }
 928
 929 check_cxx(){
 930     log check_cxx "$@"
 931     cat > $TMPCPP
 932     log_file $TMPCPP
 933     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 934 }
 935
 936 check_objcc(){
 937     log check_objcc "$@"
 938     cat > $TMPM
 939     log_file $TMPM
 940     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 941 }
 942
 943 check_cpp(){
 944     log check_cpp "$@"
 945     cat > $TMPC
 946     log_file $TMPC
 947     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 948 }
 949
 950 as_o(){
 951     eval printf '%s\\n' $AS_O
 952 }
 953
 954 check_as(){
 955     log check_as "$@"
 956     cat > $TMPS
 957     log_file $TMPS
 958     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 959 }
 960
 961 check_inline_asm(){
 962     log check_inline_asm "$@"
 963     name="$1"
 964     code="$2"
 965     shift 2
 966     disable $name
 967     check_cc "$@" <<EOF && enable $name
 968 void foo(void){ __asm__ volatile($code); }
 969 EOF
 970 }
 971
 972 check_inline_asm_flags(){
 973     log check_inline_asm_flags "$@"
 974     name="$1"
 975     code="$2"
 976     flags=''
 977     shift 2
 978     while [ "$1" != "" ]; do
 979       append flags $1
 980       shift
 981     done;
 982     disable $name
 983     cat > $TMPC <<EOF
 984 void foo(void){ __asm__ volatile($code); }
 985 EOF
 986     log_file $TMPC
 987     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 988     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 989 }
 990
 991 check_insn(){
 992     log check_insn "$@"
 993     check_inline_asm ${1}_inline "\"$2\""
 994     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 995 }
 996
 997 check_x86asm(){
 998     log check_x86asm "$@"
 999     echo "$1" > $TMPS
1000     log_file $TMPS
1001     shift 1
1002     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1003 }
1004
1005 ld_o(){
1006     eval printf '%s\\n' $LD_O
1007 }
1008
1009 check_ld(){
1010     log check_ld "$@"
1011     type=$1
1012     shift 1
1013     flags=$(filter_out '-l*|*.so' $@)
1014     libs=$(filter '-l*|*.so' $@)
1015     check_$type $($cflags_filter $flags) || return
1016     flags=$($ldflags_filter $flags)
1017     libs=$($ldflags_filter $libs)
1018     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1019 }
1020
1021 print_include(){
1022     hdr=$1
1023     test "${hdr%.h}" = "${hdr}" &&
1024         echo "#include $hdr"    ||
1025         echo "#include <$hdr>"
1026 }
1027
1028 check_code(){
1029     log check_code "$@"
1030     check=$1
1031     headers=$2
1032     code=$3
1033     shift 3
1034     {
1035         for hdr in $headers; do
1036             print_include $hdr
1037         done
1038         echo "int main(void) { $code; return 0; }"
1039     } | check_$check "$@"
1040 }
1041
1042 check_cppflags(){
1043     log check_cppflags "$@"
1044     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1045 #include <stdlib.h>
1046 EOF
1047 }
1048
1049 test_cflags(){
1050     log test_cflags "$@"
1051     set -- $($cflags_filter "$@")
1052     check_cc "$@" <<EOF
1053 int x;
1054 EOF
1055 }
1056
1057 check_cflags(){
1058     log check_cflags "$@"
1059     test_cflags "$@" && add_cflags "$@"
1060 }
1061
1062 check_cxxflags(){
1063     log check_cxxflags "$@"
1064     set -- $($cflags_filter "$@")
1065     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1066 int x;
1067 EOF
1068 }
1069
1070 test_objcflags(){
1071     log test_objcflags "$@"
1072     set -- $($objcflags_filter "$@")
1073     check_objcc "$@" <<EOF
1074 int x;
1075 EOF
1076 }
1077
1078 check_objcflags(){
1079     log check_objcflags "$@"
1080     test_objcflags "$@" && add_objcflags "$@"
1081 }
1082
1083 test_ldflags(){
1084     log test_ldflags "$@"
1085     check_ld "cc" "$@" <<EOF
1086 int main(void){ return 0; }
1087 EOF
1088 }
1089
1090 check_ldflags(){
1091     log check_ldflags "$@"
1092     test_ldflags "$@" && add_ldflags "$@"
1093 }
1094
1095 test_stripflags(){
1096     log test_stripflags "$@"
1097     # call check_cc to get a fresh TMPO
1098     check_cc <<EOF
1099 int main(void) { return 0; }
1100 EOF
1101     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1102 }
1103
1104 check_stripflags(){
1105     log check_stripflags "$@"
1106     test_stripflags "$@" && add_stripflags "$@"
1107 }
1108
1109 check_header(){
1110     log check_header "$@"
1111     header=$1
1112     shift
1113     disable_safe $header
1114     check_cpp "$@" <<EOF && enable_safe $header
1115 #include <$header>
1116 int x;
1117 EOF
1118 }
1119
1120 check_header_objcc(){
1121     log check_header_objcc "$@"
1122     rm -f -- "$TMPO"
1123     header=$1
1124     shift
1125     disable_safe $header
1126     {
1127        echo "#include <$header>"
1128        echo "int main(void) { return 0; }"
1129     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1130 }
1131
1132 check_apple_framework(){
1133     log check_apple_framework "$@"
1134     framework="$1"
1135     name="$(tolower $framework)"
1136     header="${framework}/${framework}.h"
1137     disable $name
1138     check_header_objcc $header && enable $name && add_extralibs "-framework $framework"
1139 }
1140
1141 check_func(){
1142     log check_func "$@"
1143     func=$1
1144     shift
1145     disable $func
1146     check_ld "cc" "$@" <<EOF && enable $func
1147 extern int $func();
1148 int main(void){ $func(); }
1149 EOF
1150 }
1151
1152 check_complexfunc(){
1153     log check_complexfunc "$@"
1154     func=$1
1155     narg=$2
1156     shift 2
1157     test $narg = 2 && args="f, g" || args="f * I"
1158     disable $func
1159     check_ld "cc" "$@" <<EOF && enable $func
1160 #include <complex.h>
1161 #include <math.h>
1162 float foo(complex float f, complex float g) { return $func($args); }
1163 int main(void){ return (int) foo; }
1164 EOF
1165 }
1166
1167 check_mathfunc(){
1168     log check_mathfunc "$@"
1169     func=$1
1170     narg=$2
1171     shift 2
1172     test $narg = 2 && args="f, g" || args="f"
1173     disable $func
1174     check_ld "cc" "$@" <<EOF && enable $func
1175 #include <math.h>
1176 float foo(float f, float g) { return $func($args); }
1177 int main(void){ return (int) foo; }
1178 EOF
1179 }
1180
1181 check_func_headers(){
1182     log check_func_headers "$@"
1183     headers=$1
1184     funcs=$2
1185     shift 2
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "#include <stdint.h>"
1191         for func in $funcs; do
1192             echo "long check_$func(void) { return (long) $func; }"
1193         done
1194         echo "int main(void) { int ret = 0;"
1195         # LTO could optimize out the test functions without this
1196         for func in $funcs; do
1197             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1198         done
1199         echo "return ret; }"
1200     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1201 }
1202
1203 check_class_headers_cpp(){
1204     log check_class_headers_cpp "$@"
1205     headers=$1
1206     classes=$2
1207     shift 2
1208     {
1209         for hdr in $headers; do
1210             echo "#include <$hdr>"
1211         done
1212         echo "int main(void) { "
1213         i=1
1214         for class in $classes; do
1215             echo "$class obj$i;"
1216             i=$(expr $i + 1)
1217         done
1218         echo "return 0; }"
1219     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1220 }
1221
1222 check_cpp_condition(){
1223     log check_cpp_condition "$@"
1224     header=$1
1225     condition=$2
1226     shift 2
1227     check_cpp "$@" <<EOF
1228 #include <$header>
1229 #if !($condition)
1230 #error "unsatisfied condition: $condition"
1231 #endif
1232 EOF
1233 }
1234
1235 test_cflags_cc(){
1236     log test_cflags_cc "$@"
1237     flags=$1
1238     header=$2
1239     condition=$3
1240     shift 3
1241     set -- $($cflags_filter "$flags")
1242     check_cc "$@" <<EOF
1243 #include <$header>
1244 #if !($condition)
1245 #error "unsatisfied condition: $condition"
1246 #endif
1247 EOF
1248 }
1249
1250 check_lib(){
1251     log check_lib "$@"
1252     name="$1"
1253     headers="$2"
1254     funcs="$3"
1255     shift 3
1256     disable $name
1257     check_func_headers "$headers" "$funcs" "$@" &&
1258         enable $name && add_extralibs "$@"
1259 }
1260
1261 check_lib_cpp(){
1262     log check_lib_cpp "$@"
1263     headers="$1"
1264     classes="$2"
1265     shift 2
1266     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1267 }
1268
1269 check_pkg_config(){
1270     log check_pkg_config "$@"
1271     name="$1"
1272     pkg_version="$2"
1273     pkg="${2%% *}"
1274     headers="$3"
1275     funcs="$4"
1276     shift 4
1277     disable $name
1278     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1279     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1280     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1281     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1282         enable $name &&
1283         set_safe "${pkg}_cflags"    $pkg_cflags &&
1284         set_safe "${pkg}_extralibs" $pkg_libs
1285 }
1286
1287 check_exec(){
1288     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1289 }
1290
1291 check_exec_crash(){
1292     log check_exec_crash "$@"
1293     code=$(cat)
1294
1295     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1296     # are safe but may not be available everywhere.  Thus we use
1297     # raise(SIGTERM) instead.  The check is run in a subshell so we
1298     # can redirect the "Terminated" message from the shell.  SIGBUS
1299     # is not defined by standard C so it is used conditionally.
1300
1301     (check_exec "$@") >> $logfile 2>&1 <<EOF
1302 #include <signal.h>
1303 static void sighandler(int sig){
1304     raise(SIGTERM);
1305 }
1306 int foo(void){
1307     $code
1308 }
1309 int (*func_ptr)(void) = foo;
1310 int main(void){
1311     signal(SIGILL, sighandler);
1312     signal(SIGFPE, sighandler);
1313     signal(SIGSEGV, sighandler);
1314 #ifdef SIGBUS
1315     signal(SIGBUS, sighandler);
1316 #endif
1317     return func_ptr();
1318 }
1319 EOF
1320 }
1321
1322 check_type(){
1323     log check_type "$@"
1324     headers=$1
1325     type=$2
1326     shift 2
1327     disable_safe "$type"
1328     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1329 }
1330
1331 check_struct(){
1332     log check_struct "$@"
1333     headers=$1
1334     struct=$2
1335     member=$3
1336     shift 3
1337     disable_safe "${struct}_${member}"
1338     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1339         enable_safe "${struct}_${member}"
1340 }
1341
1342 check_builtin(){
1343     log check_builtin "$@"
1344     name=$1
1345     headers=$2
1346     builtin=$3
1347     shift 3
1348     disable "$name"
1349     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1350 }
1351
1352 check_compile_assert(){
1353     log check_compile_assert "$@"
1354     name=$1
1355     headers=$2
1356     condition=$3
1357     shift 3
1358     disable "$name"
1359     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1360 }
1361
1362 require(){
1363     log require "$@"
1364     name_version="$1"
1365     name="${1%% *}"
1366     headers="$2"
1367     func="$3"
1368     shift 3
1369     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1370 }
1371
1372 require_cpp(){
1373     name="$1"
1374     headers="$2"
1375     classes="$3"
1376     shift 3
1377     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1378 }
1379
1380 require_header(){
1381     log require "$@"
1382     header="$1"
1383     shift
1384     check_header "$header" "$@" || die "ERROR: $header header not found"
1385 }
1386
1387 require_cpp_condition(){
1388     log require "$@"
1389     header="$1"
1390     condition="$2"
1391     shift 2
1392     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1393 }
1394
1395 use_pkg_config(){
1396     log use_pkg_config "$@"
1397     pkg="${2%% *}"
1398     check_pkg_config "$@" || return 1
1399     add_cflags    $(get_safe "${pkg}_cflags")
1400     add_extralibs $(get_safe "${pkg}_extralibs")
1401 }
1402
1403 require_pkg_config(){
1404     log require_pkg_config "$@"
1405     pkg_version="$2"
1406     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1407 }
1408
1409 hostcc_e(){
1410     eval printf '%s\\n' $HOSTCC_E
1411 }
1412
1413 hostcc_o(){
1414     eval printf '%s\\n' $HOSTCC_O
1415 }
1416
1417 check_host_cc(){
1418     log check_host_cc "$@"
1419     cat > $TMPC
1420     log_file $TMPC
1421     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1422 }
1423
1424 check_host_cpp(){
1425     log check_host_cpp "$@"
1426     cat > $TMPC
1427     log_file $TMPC
1428     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1429 }
1430
1431 check_host_cppflags(){
1432     log check_host_cppflags "$@"
1433     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1434 #include <stdlib.h>
1435 EOF
1436 }
1437
1438 check_host_cflags(){
1439     log check_host_cflags "$@"
1440     set -- $($host_cflags_filter "$@")
1441     check_host_cc "$@" <<EOF && append host_cflags "$@"
1442 int x;
1443 EOF
1444 }
1445
1446 check_host_cpp_condition(){
1447     log check_host_cpp_condition "$@"
1448     header=$1
1449     condition=$2
1450     shift 2
1451     check_host_cpp "$@" <<EOF
1452 #include <$header>
1453 #if !($condition)
1454 #error "unsatisfied condition: $condition"
1455 #endif
1456 EOF
1457 }
1458
1459 cp_if_changed(){
1460     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1461     mkdir -p "$(dirname $2)"
1462     cp -f "$1" "$2"
1463 }
1464
1465 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1466 # system-dependent things.
1467
1468 AVCODEC_COMPONENTS="
1469     bsfs
1470     decoders
1471     encoders
1472     hwaccels
1473     parsers
1474 "
1475
1476 AVDEVICE_COMPONENTS="
1477     indevs
1478     outdevs
1479 "
1480
1481 AVFILTER_COMPONENTS="
1482     filters
1483 "
1484
1485 AVFORMAT_COMPONENTS="
1486     demuxers
1487     muxers
1488     protocols
1489 "
1490
1491 AVRESAMPLE_COMPONENTS=""
1492
1493 AVUTIL_COMPONENTS=""
1494
1495 COMPONENT_LIST="
1496     $AVCODEC_COMPONENTS
1497     $AVDEVICE_COMPONENTS
1498     $AVFILTER_COMPONENTS
1499     $AVFORMAT_COMPONENTS
1500     $AVRESAMPLE_COMPONENTS
1501     $AVUTIL_COMPONENTS
1502 "
1503
1504 EXAMPLE_LIST="
1505     avio_dir_cmd_example
1506     avio_reading_example
1507     decode_audio_example
1508     decode_video_example
1509     demuxing_decoding_example
1510     encode_audio_example
1511     encode_video_example
1512     extract_mvs_example
1513     filter_audio_example
1514     filtering_audio_example
1515     filtering_video_example
1516     http_multiclient_example
1517     hw_decode_example
1518     metadata_example
1519     muxing_example
1520     qsvdec_example
1521     remuxing_example
1522     resampling_audio_example
1523     scaling_video_example
1524     transcode_aac_example
1525     transcoding_example
1526 "
1527
1528 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1529     alsa
1530     appkit
1531     avfoundation
1532     bzlib
1533     coreimage
1534     iconv
1535     jack
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     libvo_amrwbenc
1573     rkmpp
1574 "
1575
1576 EXTERNAL_LIBRARY_GPLV3_LIST="
1577     libsmbclient
1578 "
1579
1580 EXTERNAL_LIBRARY_LIST="
1581     $EXTERNAL_AUTODETECT_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     libkvazaar
1607     libmodplug
1608     libmp3lame
1609     libmysofa
1610     libopencv
1611     libopenh264
1612     libopenjpeg
1613     libopenmpt
1614     libopus
1615     libpulse
1616     librsvg
1617     librtmp
1618     libshine
1619     libsmbclient
1620     libsnappy
1621     libsoxr
1622     libspeex
1623     libssh
1624     libtesseract
1625     libtheora
1626     libtwolame
1627     libv4l2
1628     libvmaf
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     vda
1653     vdpau
1654     videotoolbox
1655     v4l2_m2m
1656     xvmc
1657 "
1658
1659 HWACCEL_LIBRARY_NONFREE_LIST="
1660     cuda_sdk
1661     libnpp
1662 "
1663
1664 HWACCEL_LIBRARY_LIST="
1665     $HWACCEL_AUTODETECT_LIBRARY_LIST
1666     $HWACCEL_LIBRARY_NONFREE_LIST
1667     libmfx
1668     mmal
1669     omx
1670 "
1671
1672 DOCUMENT_LIST="
1673     doc
1674     htmlpages
1675     manpages
1676     podpages
1677     txtpages
1678 "
1679
1680 FEATURE_LIST="
1681     ftrapv
1682     gray
1683     hardcoded_tables
1684     omx_rpi
1685     runtime_cpudetect
1686     safe_bitstream_reader
1687     shared
1688     small
1689     static
1690     swscale_alpha
1691 "
1692
1693 LIBRARY_LIST="
1694     avcodec
1695     avdevice
1696     avfilter
1697     avformat
1698     avresample
1699     avutil
1700     postproc
1701     swresample
1702     swscale
1703 "
1704
1705 LICENSE_LIST="
1706     gpl
1707     nonfree
1708     version3
1709 "
1710
1711 PROGRAM_LIST="
1712     ffplay
1713     ffprobe
1714     ffserver
1715     ffmpeg
1716 "
1717
1718 SUBSYSTEM_LIST="
1719     dct
1720     dwt
1721     error_resilience
1722     faan
1723     fast_unaligned
1724     fft
1725     lsp
1726     lzo
1727     mdct
1728     pixelutils
1729     network
1730     rdft
1731 "
1732
1733 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1734 CONFIG_LIST="
1735     $DOCUMENT_LIST
1736     $EXAMPLE_LIST
1737     $EXTERNAL_LIBRARY_LIST
1738     $HWACCEL_LIBRARY_LIST
1739     $FEATURE_LIST
1740     $LICENSE_LIST
1741     $LIBRARY_LIST
1742     $PROGRAM_LIST
1743     $SUBSYSTEM_LIST
1744     autodetect
1745     fontconfig
1746     linux_perf
1747     memory_poisoning
1748     neon_clobber_test
1749     ossfuzz
1750     pic
1751     thumb
1752     valgrind_backtrace
1753     xmm_clobber_test
1754     $COMPONENT_LIST
1755 "
1756
1757 THREADS_LIST="
1758     pthreads
1759     os2threads
1760     w32threads
1761 "
1762
1763 ATOMICS_LIST="
1764     atomics_gcc
1765     atomics_suncc
1766     atomics_win32
1767 "
1768
1769 AUTODETECT_LIBS="
1770     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1771     $HWACCEL_AUTODETECT_LIBRARY_LIST
1772     $THREADS_LIST
1773 "
1774
1775 ARCH_LIST="
1776     aarch64
1777     alpha
1778     arm
1779     avr32
1780     avr32_ap
1781     avr32_uc
1782     bfin
1783     ia64
1784     m68k
1785     mips
1786     mips64
1787     parisc
1788     ppc
1789     ppc64
1790     s390
1791     sh4
1792     sparc
1793     sparc64
1794     tilegx
1795     tilepro
1796     tomi
1797     x86
1798     x86_32
1799     x86_64
1800 "
1801
1802 ARCH_EXT_LIST_ARM="
1803     armv5te
1804     armv6
1805     armv6t2
1806     armv8
1807     neon
1808     vfp
1809     vfpv3
1810     setend
1811 "
1812
1813 ARCH_EXT_LIST_MIPS="
1814     mipsfpu
1815     mips32r2
1816     mips32r5
1817     mips64r2
1818     mips32r6
1819     mips64r6
1820     mipsdsp
1821     mipsdspr2
1822     msa
1823 "
1824
1825 ARCH_EXT_LIST_LOONGSON="
1826     loongson2
1827     loongson3
1828     mmi
1829 "
1830
1831 ARCH_EXT_LIST_X86_SIMD="
1832     aesni
1833     amd3dnow
1834     amd3dnowext
1835     avx
1836     avx2
1837     fma3
1838     fma4
1839     mmx
1840     mmxext
1841     sse
1842     sse2
1843     sse3
1844     sse4
1845     sse42
1846     ssse3
1847     xop
1848 "
1849
1850 ARCH_EXT_LIST_PPC="
1851     altivec
1852     dcbzl
1853     ldbrx
1854     power8
1855     ppc4xx
1856     vsx
1857 "
1858
1859 ARCH_EXT_LIST_X86="
1860     $ARCH_EXT_LIST_X86_SIMD
1861     cpunop
1862     i686
1863 "
1864
1865 ARCH_EXT_LIST="
1866     $ARCH_EXT_LIST_ARM
1867     $ARCH_EXT_LIST_PPC
1868     $ARCH_EXT_LIST_X86
1869     $ARCH_EXT_LIST_MIPS
1870     $ARCH_EXT_LIST_LOONGSON
1871 "
1872
1873 ARCH_FEATURES="
1874     aligned_stack
1875     fast_64bit
1876     fast_clz
1877     fast_cmov
1878     local_aligned_8
1879     local_aligned_16
1880     local_aligned_32
1881     simd_align_16
1882     simd_align_32
1883 "
1884
1885 BUILTIN_LIST="
1886     atomic_cas_ptr
1887     machine_rw_barrier
1888     MemoryBarrier
1889     mm_empty
1890     rdtsc
1891     sarestart
1892     sem_timedwait
1893     sync_val_compare_and_swap
1894 "
1895 HAVE_LIST_CMDLINE="
1896     inline_asm
1897     symver
1898     x86asm
1899 "
1900
1901 HAVE_LIST_PUB="
1902     bigendian
1903     fast_unaligned
1904 "
1905
1906 HEADERS_LIST="
1907     altivec_h
1908     arpa_inet_h
1909     asm_types_h
1910     cdio_paranoia_h
1911     cdio_paranoia_paranoia_h
1912     cuda_h
1913     d3d11_h
1914     dispatch_dispatch_h
1915     dev_bktr_ioctl_bt848_h
1916     dev_bktr_ioctl_meteor_h
1917     dev_ic_bt8xx_h
1918     dev_video_bktr_ioctl_bt848_h
1919     dev_video_meteor_ioctl_meteor_h
1920     direct_h
1921     dirent_h
1922     dlfcn_h
1923     dxgidebug_h
1924     dxva_h
1925     ES2_gl_h
1926     gsm_h
1927     io_h
1928     mach_mach_time_h
1929     machine_ioctl_bt848_h
1930     machine_ioctl_meteor_h
1931     malloc_h
1932     opencv2_core_core_c_h
1933     openjpeg_2_3_openjpeg_h
1934     openjpeg_2_2_openjpeg_h
1935     openjpeg_2_1_openjpeg_h
1936     openjpeg_2_0_openjpeg_h
1937     openjpeg_1_5_openjpeg_h
1938     OpenGL_gl3_h
1939     poll_h
1940     soundcard_h
1941     stdatomic_h
1942     sys_mman_h
1943     sys_param_h
1944     sys_resource_h
1945     sys_select_h
1946     sys_soundcard_h
1947     sys_time_h
1948     sys_un_h
1949     sys_videoio_h
1950     termios_h
1951     udplite_h
1952     unistd_h
1953     valgrind_valgrind_h
1954     windows_h
1955     winsock2_h
1956 "
1957
1958 INTRINSICS_LIST="
1959     intrinsics_neon
1960 "
1961
1962 COMPLEX_FUNCS="
1963     cabs
1964     cexp
1965 "
1966
1967 MATH_FUNCS="
1968     atanf
1969     atan2f
1970     cbrt
1971     cbrtf
1972     copysign
1973     cosf
1974     erf
1975     exp2
1976     exp2f
1977     expf
1978     hypot
1979     isfinite
1980     isinf
1981     isnan
1982     ldexpf
1983     llrint
1984     llrintf
1985     log2
1986     log2f
1987     log10f
1988     lrint
1989     lrintf
1990     powf
1991     rint
1992     round
1993     roundf
1994     sinf
1995     trunc
1996     truncf
1997 "
1998
1999 SYSTEM_FUNCS="
2000     access
2001     aligned_malloc
2002     arc4random
2003     clock_gettime
2004     closesocket
2005     CommandLineToArgvW
2006     CoTaskMemFree
2007     CryptGenRandom
2008     fcntl
2009     flt_lim
2010     fork
2011     getaddrinfo
2012     gethrtime
2013     getopt
2014     GetProcessAffinityMask
2015     GetProcessMemoryInfo
2016     GetProcessTimes
2017     getrusage
2018     GetSystemTimeAsFileTime
2019     gettimeofday
2020     glob
2021     glXGetProcAddress
2022     gmtime_r
2023     inet_aton
2024     isatty
2025     jack_port_get_latency_range
2026     kbhit
2027     LoadLibrary
2028     localtime_r
2029     lstat
2030     lzo1x_999_compress
2031     mach_absolute_time
2032     MapViewOfFile
2033     memalign
2034     mkstemp
2035     mmap
2036     mprotect
2037     nanosleep
2038     PeekNamedPipe
2039     posix_memalign
2040     pthread_cancel
2041     sched_getaffinity
2042     SetConsoleTextAttribute
2043     SetConsoleCtrlHandler
2044     setmode
2045     setrlimit
2046     Sleep
2047     strerror_r
2048     sysconf
2049     sysctl
2050     usleep
2051     UTGetOSTypeFromString
2052     VirtualAlloc
2053     wglGetProcAddress
2054 "
2055
2056 TOOLCHAIN_FEATURES="
2057     as_dn_directive
2058     as_fpu_directive
2059     as_func
2060     as_object_arch
2061     asm_mod_q
2062     attribute_may_alias
2063     attribute_packed
2064     blocks_extension
2065     ebp_available
2066     ebx_available
2067     gnu_as
2068     gnu_windres
2069     ibm_asm
2070     inline_asm_direct_symbol_refs
2071     inline_asm_labels
2072     inline_asm_nonlocal_labels
2073     pragma_deprecated
2074     rsync_contimeout
2075     symver_asm_label
2076     symver_gnu_asm
2077     vfp_args
2078     xform_asm
2079     xmm_clobbers
2080 "
2081
2082 TYPES_LIST="
2083     CONDITION_VARIABLE_Ptr
2084     kCMVideoCodecType_HEVC
2085     socklen_t
2086     struct_addrinfo
2087     struct_group_source_req
2088     struct_ip_mreq_source
2089     struct_ipv6_mreq
2090     struct_msghdr_msg_flags
2091     struct_pollfd
2092     struct_rusage_ru_maxrss
2093     struct_sctp_event_subscribe
2094     struct_sockaddr_in6
2095     struct_sockaddr_sa_len
2096     struct_sockaddr_storage
2097     struct_stat_st_mtim_tv_nsec
2098     struct_v4l2_frmivalenum_discrete
2099 "
2100
2101 HAVE_LIST="
2102     $ARCH_EXT_LIST
2103     $(add_suffix _external $ARCH_EXT_LIST)
2104     $(add_suffix _inline   $ARCH_EXT_LIST)
2105     $ARCH_FEATURES
2106     $ATOMICS_LIST
2107     $BUILTIN_LIST
2108     $COMPLEX_FUNCS
2109     $HAVE_LIST_CMDLINE
2110     $HAVE_LIST_PUB
2111     $HEADERS_LIST
2112     $INTRINSICS_LIST
2113     $MATH_FUNCS
2114     $SYSTEM_FUNCS
2115     $THREADS_LIST
2116     $TOOLCHAIN_FEATURES
2117     $TYPES_LIST
2118     atomics_native
2119     dos_paths
2120     libc_msvcrt
2121     makeinfo
2122     makeinfo_html
2123     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2124     perl
2125     pod2man
2126     section_data_rel_ro
2127     texi2html
2128     threads
2129     uwp
2130     vaapi_drm
2131     vaapi_x11
2132     vdpau_x11
2133     winrt
2134 "
2135
2136 # options emitted with CONFIG_ prefix but not available on the command line
2137 CONFIG_EXTRA="
2138     aandcttables
2139     ac3dsp
2140     audio_frame_queue
2141     audiodsp
2142     blockdsp
2143     bswapdsp
2144     cabac
2145     dirac_parse
2146     dvprofile
2147     exif
2148     faandct
2149     faanidct
2150     fdctdsp
2151     flacdsp
2152     fmtconvert
2153     frame_thread_encoder
2154     g722dsp
2155     golomb
2156     gplv3
2157     h263dsp
2158     h264chroma
2159     h264dsp
2160     h264parse
2161     h264pred
2162     h264qpel
2163     hevcparse
2164     hpeldsp
2165     huffman
2166     huffyuvdsp
2167     huffyuvencdsp
2168     idctdsp
2169     iirfilter
2170     mdct15
2171     intrax8
2172     iso_media
2173     ividsp
2174     jpegtables
2175     lgplv3
2176     libx262
2177     llauddsp
2178     llviddsp
2179     llvidencdsp
2180     lpc
2181     lzf
2182     me_cmp
2183     mpeg_er
2184     mpegaudio
2185     mpegaudiodsp
2186     mpegaudioheader
2187     mpegvideo
2188     mpegvideoenc
2189     mss34dsp
2190     pixblockdsp
2191     qpeldsp
2192     qsv
2193     qsvdec
2194     qsvenc
2195     rangecoder
2196     riffdec
2197     riffenc
2198     rtpdec
2199     rtpenc_chain
2200     rv34dsp
2201     sinewin
2202     snappy
2203     srtp
2204     startcode
2205     texturedsp
2206     texturedspenc
2207     tpeldsp
2208     vaapi_1
2209     vaapi_encode
2210     vc1dsp
2211     videodsp
2212     vp3dsp
2213     vp56dsp
2214     vp8dsp
2215     wma_freqs
2216     wmv2dsp
2217 "
2218
2219 CMDLINE_SELECT="
2220     $ARCH_EXT_LIST
2221     $CONFIG_LIST
2222     $HAVE_LIST_CMDLINE
2223     $THREADS_LIST
2224     asm
2225     cross_compile
2226     debug
2227     extra_warnings
2228     logging
2229     lto
2230     optimizations
2231     rpath
2232     stripping
2233 "
2234
2235 PATHS_LIST="
2236     bindir
2237     datadir
2238     docdir
2239     incdir
2240     libdir
2241     mandir
2242     pkgconfigdir
2243     prefix
2244     shlibdir
2245     install_name_dir
2246 "
2247
2248 CMDLINE_SET="
2249     $PATHS_LIST
2250     ar
2251     arch
2252     as
2253     assert_level
2254     build_suffix
2255     cc
2256     objcc
2257     cpu
2258     cross_prefix
2259     custom_allocator
2260     cxx
2261     dep_cc
2262     doxygen
2263     env
2264     extra_version
2265     gas
2266     host_cc
2267     host_cflags
2268     host_extralibs
2269     host_ld
2270     host_ldflags
2271     host_os
2272     ignore_tests
2273     install
2274     ld
2275     ln_s
2276     logfile
2277     malloc_prefix
2278     nm
2279     optflags
2280     nvccflags
2281     pkg_config
2282     pkg_config_flags
2283     progs_suffix
2284     random_seed
2285     ranlib
2286     samples
2287     strip
2288     sws_max_filter_size
2289     sysinclude
2290     sysroot
2291     target_exec
2292     target_os
2293     target_path
2294     target_samples
2295     tempprefix
2296     toolchain
2297     valgrind
2298     x86asmexe
2299 "
2300
2301 CMDLINE_APPEND="
2302     extra_cflags
2303     extra_cxxflags
2304     extra_objcflags
2305     host_cppflags
2306 "
2307
2308 # code dependency declarations
2309
2310 # architecture extensions
2311
2312 armv5te_deps="arm"
2313 armv6_deps="arm"
2314 armv6t2_deps="arm"
2315 armv8_deps="aarch64"
2316 neon_deps_any="aarch64 arm"
2317 intrinsics_neon_deps="neon"
2318 vfp_deps_any="aarch64 arm"
2319 vfpv3_deps="vfp"
2320 setend_deps="arm"
2321
2322 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2323
2324 loongson2_deps="mips"
2325 loongson3_deps="mips"
2326 mipsfpu_deps="mips"
2327 mipsdsp_deps="mips"
2328 mipsdspr2_deps="mips"
2329 mips32r2_deps="mips"
2330 mips32r5_deps="mips"
2331 mips32r6_deps="mips"
2332 mips64r2_deps="mips"
2333 mips64r6_deps="mips"
2334 msa_deps="mipsfpu"
2335 mmi_deps="mips"
2336
2337 altivec_deps="ppc"
2338 dcbzl_deps="ppc"
2339 ldbrx_deps="ppc"
2340 ppc4xx_deps="ppc"
2341 vsx_deps="altivec"
2342 power8_deps="vsx"
2343
2344 cpunop_deps="i686"
2345 x86_64_select="i686"
2346 x86_64_suggest="fast_cmov"
2347
2348 amd3dnow_deps="mmx"
2349 amd3dnowext_deps="amd3dnow"
2350 i686_deps="x86"
2351 mmx_deps="x86"
2352 mmxext_deps="mmx"
2353 sse_deps="mmxext"
2354 sse2_deps="sse"
2355 sse3_deps="sse2"
2356 ssse3_deps="sse3"
2357 sse4_deps="ssse3"
2358 sse42_deps="sse4"
2359 aesni_deps="sse42"
2360 avx_deps="sse42"
2361 xop_deps="avx"
2362 fma3_deps="avx"
2363 fma4_deps="avx"
2364 avx2_deps="avx"
2365
2366 mmx_external_deps="x86asm"
2367 mmx_inline_deps="inline_asm"
2368 mmx_suggest="mmx_external mmx_inline"
2369
2370 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2371     eval dep=\$${ext}_deps
2372     eval ${ext}_external_deps='"${dep}_external"'
2373     eval ${ext}_inline_deps='"${dep}_inline"'
2374     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2375 done
2376
2377 aligned_stack_if_any="aarch64 ppc x86"
2378 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2379 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2380 fast_unaligned_if_any="aarch64 ppc x86"
2381 simd_align_16_if_any="altivec neon sse"
2382 simd_align_32_if_any="avx"
2383
2384 # system capabilities
2385 symver_if_any="symver_asm_label symver_gnu_asm"
2386 valgrind_backtrace_conflict="optimizations"
2387 valgrind_backtrace_deps="valgrind_valgrind_h"
2388
2389 # threading support
2390 atomics_gcc_if="sync_val_compare_and_swap"
2391 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2392 atomics_win32_if="MemoryBarrier"
2393 atomics_native_if_any="$ATOMICS_LIST"
2394 w32threads_deps="atomics_native"
2395 threads_if_any="$THREADS_LIST"
2396
2397 # subsystems
2398 dct_select="rdft"
2399 dirac_parse_select="golomb"
2400 error_resilience_select="me_cmp"
2401 faandct_deps="faan fdctdsp"
2402 faanidct_deps="faan idctdsp"
2403 h264dsp_select="startcode"
2404 hevcparse_select="golomb"
2405 frame_thread_encoder_deps="encoders threads"
2406 intrax8_select="blockdsp idctdsp"
2407 mdct_select="fft"
2408 mdct15_select="fft"
2409 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2410 mpeg_er_select="error_resilience"
2411 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2412 mpegaudiodsp_select="dct"
2413 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2414 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2415 vc1dsp_select="h264chroma qpeldsp startcode"
2416 rdft_select="fft"
2417
2418 # decoders / encoders
2419 aac_decoder_select="mdct15 mdct sinewin"
2420 aac_fixed_decoder_select="mdct sinewin"
2421 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2422 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2423 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2424 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2425 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2426 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2427 adpcm_g722_decoder_select="g722dsp"
2428 adpcm_g722_encoder_select="g722dsp"
2429 aic_decoder_select="golomb idctdsp"
2430 alac_encoder_select="lpc"
2431 als_decoder_select="bswapdsp"
2432 amrnb_decoder_select="lsp"
2433 amrwb_decoder_select="lsp"
2434 amv_decoder_select="sp5x_decoder exif"
2435 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2436 ape_decoder_select="bswapdsp llauddsp"
2437 apng_decoder_select="zlib"
2438 apng_encoder_select="llvidencdsp zlib"
2439 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2440 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2441 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2442 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2443 atrac1_decoder_select="mdct sinewin"
2444 atrac3_decoder_select="mdct"
2445 atrac3p_decoder_select="mdct sinewin"
2446 avrn_decoder_select="exif jpegtables"
2447 bink_decoder_select="blockdsp hpeldsp"
2448 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2449 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2450 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2451 clearvideo_decoder_select="idctdsp"
2452 cllc_decoder_select="bswapdsp"
2453 comfortnoise_encoder_select="lpc"
2454 cook_decoder_select="audiodsp mdct sinewin"
2455 cscd_decoder_select="lzo"
2456 cscd_decoder_suggest="zlib"
2457 dca_decoder_select="mdct"
2458 dds_decoder_select="texturedsp"
2459 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2460 dnxhd_decoder_select="blockdsp idctdsp"
2461 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2462 dolby_e_decoder_select="mdct"
2463 dvvideo_decoder_select="dvprofile idctdsp"
2464 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2465 dxa_decoder_select="zlib"
2466 dxv_decoder_select="lzf texturedsp"
2467 eac3_decoder_select="ac3_decoder"
2468 eac3_encoder_select="ac3_encoder"
2469 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2470 eatgq_decoder_select="aandcttables"
2471 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2472 exr_decoder_select="zlib"
2473 ffv1_decoder_select="rangecoder"
2474 ffv1_encoder_select="rangecoder"
2475 ffvhuff_decoder_select="huffyuv_decoder"
2476 ffvhuff_encoder_select="huffyuv_encoder"
2477 fic_decoder_select="golomb"
2478 flac_decoder_select="flacdsp"
2479 flac_encoder_select="bswapdsp flacdsp lpc"
2480 flashsv2_decoder_select="zlib"
2481 flashsv2_encoder_select="zlib"
2482 flashsv_decoder_select="zlib"
2483 flashsv_encoder_select="zlib"
2484 flv_decoder_select="h263_decoder"
2485 flv_encoder_select="h263_encoder"
2486 fourxm_decoder_select="blockdsp bswapdsp"
2487 fraps_decoder_select="bswapdsp huffman"
2488 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2489 g729_decoder_select="audiodsp"
2490 h261_decoder_select="mpegvideo"
2491 h261_encoder_select="aandcttables mpegvideoenc"
2492 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2493 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2494 h263i_decoder_select="h263_decoder"
2495 h263p_decoder_select="h263_decoder"
2496 h263p_encoder_select="h263_encoder"
2497 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2498 h264_decoder_suggest="error_resilience"
2499 hap_decoder_select="snappy texturedsp"
2500 hap_encoder_deps="libsnappy"
2501 hap_encoder_select="texturedspenc"
2502 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2503 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2504 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2505 iac_decoder_select="imc_decoder"
2506 imc_decoder_select="bswapdsp fft mdct sinewin"
2507 indeo3_decoder_select="hpeldsp"
2508 indeo4_decoder_select="ividsp"
2509 indeo5_decoder_select="ividsp"
2510 interplay_video_decoder_select="hpeldsp"
2511 jpegls_decoder_select="mjpeg_decoder"
2512 jv_decoder_select="blockdsp"
2513 lagarith_decoder_select="llviddsp"
2514 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2515 magicyuv_decoder_select="llviddsp"
2516 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2517 metasound_decoder_select="lsp mdct sinewin"
2518 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2519 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2520 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2521 mjpegb_decoder_select="mjpeg_decoder"
2522 mlp_decoder_select="mlp_parser"
2523 mlp_encoder_select="lpc"
2524 motionpixels_decoder_select="bswapdsp"
2525 mp1_decoder_select="mpegaudio"
2526 mp1float_decoder_select="mpegaudio"
2527 mp2_decoder_select="mpegaudio"
2528 mp2float_decoder_select="mpegaudio"
2529 mp3_decoder_select="mpegaudio"
2530 mp3adu_decoder_select="mpegaudio"
2531 mp3adufloat_decoder_select="mpegaudio"
2532 mp3float_decoder_select="mpegaudio"
2533 mp3on4_decoder_select="mpegaudio"
2534 mp3on4float_decoder_select="mpegaudio"
2535 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2536 mpc8_decoder_select="mpegaudiodsp"
2537 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2538 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2539 mpegvideo_decoder_select="mpegvideo"
2540 mpeg1video_decoder_select="mpegvideo"
2541 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2542 mpeg2video_decoder_select="mpegvideo"
2543 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2544 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2545 mpeg4_encoder_select="h263_encoder"
2546 msa1_decoder_select="mss34dsp"
2547 mscc_decoder_select="zlib"
2548 msmpeg4v1_decoder_select="h263_decoder"
2549 msmpeg4v2_decoder_select="h263_decoder"
2550 msmpeg4v2_encoder_select="h263_encoder"
2551 msmpeg4v3_decoder_select="h263_decoder"
2552 msmpeg4v3_encoder_select="h263_encoder"
2553 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2554 mts2_decoder_select="mss34dsp"
2555 mxpeg_decoder_select="mjpeg_decoder"
2556 nellymoser_decoder_select="mdct sinewin"
2557 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2558 nuv_decoder_select="idctdsp lzo"
2559 on2avc_decoder_select="mdct"
2560 opus_decoder_deps="swresample"
2561 opus_decoder_select="mdct15"
2562 opus_encoder_select="audio_frame_queue mdct15"
2563 png_decoder_select="zlib"
2564 png_encoder_select="llvidencdsp zlib"
2565 prores_decoder_select="blockdsp idctdsp"
2566 prores_encoder_select="fdctdsp"
2567 qcelp_decoder_select="lsp"
2568 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2569 ra_144_decoder_select="audiodsp"
2570 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2571 ralf_decoder_select="golomb"
2572 rawvideo_decoder_select="bswapdsp"
2573 rscc_decoder_select="zlib"
2574 rtjpeg_decoder_select="me_cmp"
2575 rv10_decoder_select="h263_decoder"
2576 rv10_encoder_select="h263_encoder"
2577 rv20_decoder_select="h263_decoder"
2578 rv20_encoder_select="h263_encoder"
2579 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2580 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2581 screenpresso_decoder_select="zlib"
2582 shorten_decoder_select="bswapdsp"
2583 sipr_decoder_select="lsp"
2584 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2585 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2586 sonic_decoder_select="golomb rangecoder"
2587 sonic_encoder_select="golomb rangecoder"
2588 sonic_ls_encoder_select="golomb rangecoder"
2589 sp5x_decoder_select="mjpeg_decoder"
2590 srgc_decoder_select="zlib"
2591 svq1_decoder_select="hpeldsp"
2592 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2593 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2594 svq3_decoder_suggest="zlib"
2595 tak_decoder_select="audiodsp"
2596 tdsc_decoder_select="zlib mjpeg_decoder"
2597 theora_decoder_select="vp3_decoder"
2598 thp_decoder_select="mjpeg_decoder"
2599 tiff_decoder_suggest="zlib lzma"
2600 tiff_encoder_suggest="zlib"
2601 truehd_decoder_select="mlp_parser"
2602 truehd_encoder_select="lpc"
2603 truemotion2_decoder_select="bswapdsp"
2604 truespeech_decoder_select="bswapdsp"
2605 tscc_decoder_select="zlib"
2606 twinvq_decoder_select="mdct lsp sinewin"
2607 txd_decoder_select="texturedsp"
2608 utvideo_decoder_select="bswapdsp llviddsp"
2609 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2610 vble_decoder_select="llviddsp"
2611 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2612 vc1_qsv_decoder_deps="libmfx"
2613 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2614 vc1image_decoder_select="vc1_decoder"
2615 vorbis_decoder_select="mdct"
2616 vorbis_encoder_select="mdct"
2617 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2618 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2619 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2620 vp6a_decoder_select="vp6_decoder"
2621 vp6f_decoder_select="vp6_decoder"
2622 vp7_decoder_select="h264pred videodsp vp8dsp"
2623 vp8_decoder_select="h264pred videodsp vp8dsp"
2624 vp9_decoder_select="videodsp vp9_parser"
2625 webp_decoder_select="vp8_decoder exif"
2626 wmalossless_decoder_select="llauddsp"
2627 wmapro_decoder_select="mdct sinewin wma_freqs"
2628 wmav1_decoder_select="mdct sinewin wma_freqs"
2629 wmav1_encoder_select="mdct sinewin wma_freqs"
2630 wmav2_decoder_select="mdct sinewin wma_freqs"
2631 wmav2_encoder_select="mdct sinewin wma_freqs"
2632 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2633 wmv1_decoder_select="h263_decoder"
2634 wmv1_encoder_select="h263_encoder"
2635 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2636 wmv2_encoder_select="h263_encoder wmv2dsp"
2637 wmv3_decoder_select="vc1_decoder"
2638 wmv3image_decoder_select="wmv3_decoder"
2639 xma1_decoder_select="wmapro_decoder"
2640 xma2_decoder_select="wmapro_decoder"
2641 zerocodec_decoder_select="zlib"
2642 zlib_decoder_select="zlib"
2643 zlib_encoder_select="zlib"
2644 zmbv_decoder_select="zlib"
2645 zmbv_encoder_select="zlib"
2646
2647 # hardware accelerators
2648 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2649 cuda_deps_any="libdl LoadLibrary"
2650 cuvid_deps="cuda"
2651 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2652 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2653 dxva2_extralibs="-luser32"
2654 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2655 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2656 vda_deps="vda_framework pthreads"
2657 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2658 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2659 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2660 xvmc_deps="X11_extensions_XvMClib_h"
2661
2662 h263_vaapi_hwaccel_deps="vaapi"
2663 h263_vaapi_hwaccel_select="h263_decoder"
2664 h263_videotoolbox_hwaccel_deps="videotoolbox"
2665 h263_videotoolbox_hwaccel_select="h263_decoder"
2666 h264_cuvid_hwaccel_deps="cuda cuvid"
2667 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2668 h264_d3d11va_hwaccel_deps="d3d11va"
2669 h264_d3d11va_hwaccel_select="h264_decoder"
2670 h264_d3d11va2_hwaccel_deps="d3d11va"
2671 h264_d3d11va2_hwaccel_select="h264_decoder"
2672 h264_dxva2_hwaccel_deps="dxva2"
2673 h264_dxva2_hwaccel_select="h264_decoder"
2674 h264_mediacodec_hwaccel_deps="mediacodec"
2675 h264_mmal_hwaccel_deps="mmal"
2676 h264_qsv_hwaccel_deps="libmfx"
2677 h264_vaapi_hwaccel_deps="vaapi"
2678 h264_vaapi_hwaccel_select="h264_decoder"
2679 h264_vda_hwaccel_deps="vda"
2680 h264_vda_hwaccel_select="h264_decoder"
2681 h264_vda_old_hwaccel_deps="vda"
2682 h264_vda_old_hwaccel_select="h264_decoder"
2683 h264_vdpau_hwaccel_deps="vdpau"
2684 h264_vdpau_hwaccel_select="h264_decoder"
2685 h264_videotoolbox_hwaccel_deps="videotoolbox"
2686 h264_videotoolbox_hwaccel_select="h264_decoder"
2687 hevc_cuvid_hwaccel_deps="cuda cuvid"
2688 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2689 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2690 hevc_d3d11va_hwaccel_select="hevc_decoder"
2691 hevc_mediacodec_hwaccel_deps="mediacodec"
2692 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2693 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2694 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2695 hevc_dxva2_hwaccel_select="hevc_decoder"
2696 hevc_qsv_hwaccel_deps="libmfx"
2697 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2698 hevc_vaapi_hwaccel_select="hevc_decoder"
2699 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2700 hevc_vdpau_hwaccel_select="hevc_decoder"
2701 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2702 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2703 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2704 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2705 mpeg_xvmc_hwaccel_deps="xvmc"
2706 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2707 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2708 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2709 mpeg1_vdpau_hwaccel_deps="vdpau"
2710 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2711 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2712 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2713 mpeg1_xvmc_hwaccel_deps="xvmc"
2714 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2715 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2716 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2717 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2718 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2719 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2720 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2721 mpeg2_dxva2_hwaccel_deps="dxva2"
2722 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2724 mpeg2_mmal_hwaccel_deps="mmal"
2725 mpeg2_qsv_hwaccel_deps="libmfx"
2726 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2727 mpeg2_vaapi_hwaccel_deps="vaapi"
2728 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_vdpau_hwaccel_deps="vdpau"
2730 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2731 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2732 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2733 mpeg2_xvmc_hwaccel_deps="xvmc"
2734 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2735 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2736 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2737 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2738 mpeg4_mmal_hwaccel_deps="mmal"
2739 mpeg4_vaapi_hwaccel_deps="vaapi"
2740 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2741 mpeg4_vdpau_hwaccel_deps="vdpau"
2742 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2743 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2744 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2745 vc1_cuvid_hwaccel_deps="cuda cuvid"
2746 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2747 vc1_d3d11va_hwaccel_deps="d3d11va"
2748 vc1_d3d11va_hwaccel_select="vc1_decoder"
2749 vc1_d3d11va2_hwaccel_deps="d3d11va"
2750 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2751 vc1_dxva2_hwaccel_deps="dxva2"
2752 vc1_dxva2_hwaccel_select="vc1_decoder"
2753 vc1_mmal_hwaccel_deps="mmal"
2754 vc1_qsv_hwaccel_deps="libmfx"
2755 vc1_qsv_hwaccel_select="qsvdec_vc1"
2756 vc1_vaapi_hwaccel_deps="vaapi"
2757 vc1_vaapi_hwaccel_select="vc1_decoder"
2758 vc1_vdpau_hwaccel_deps="vdpau"
2759 vc1_vdpau_hwaccel_select="vc1_decoder"
2760 vp8_cuvid_hwaccel_deps="cuda cuvid"
2761 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2762 vp9_cuvid_hwaccel_deps="cuda cuvid"
2763 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2764 vp8_mediacodec_hwaccel_deps="mediacodec"
2765 vp8_qsv_hwaccel_deps="libmfx"
2766 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2767 vp9_d3d11va_hwaccel_select="vp9_decoder"
2768 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2769 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2770 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2771 vp9_dxva2_hwaccel_select="vp9_decoder"
2772 vp9_mediacodec_hwaccel_deps="mediacodec"
2773 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2774 vp9_vaapi_hwaccel_select="vp9_decoder"
2775 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2776 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2777 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2778 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2779 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2780
2781 # hardware-accelerated codecs
2782 omx_deps="libdl pthreads"
2783 omx_rpi_select="omx"
2784 qsvdec_select="qsv"
2785 qsvenc_select="qsv"
2786 vaapi_encode_deps="vaapi"
2787 v4l2_m2m_deps_any="linux_videodev2_h"
2788
2789 hwupload_cuda_filter_deps="cuda"
2790 scale_npp_filter_deps="cuda libnpp"
2791 scale_cuda_filter_deps="cuda_sdk"
2792 thumbnail_cuda_filter_deps="cuda_sdk"
2793
2794 nvenc_deps="cuda"
2795 nvenc_deps_any="libdl LoadLibrary"
2796 nvenc_encoder_deps="nvenc"
2797
2798 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2799 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2800 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2801 h264_cuvid_decoder_deps="cuda cuvid"
2802 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2803 h264_mediacodec_decoder_deps="mediacodec"
2804 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2805 h264_mmal_decoder_deps="mmal"
2806 h264_nvenc_encoder_deps="nvenc"
2807 h264_omx_encoder_deps="omx"
2808 h264_qsv_decoder_deps="libmfx"
2809 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2810 h264_qsv_encoder_deps="libmfx"
2811 h264_qsv_encoder_select="qsvenc"
2812 h264_rkmpp_decoder_deps="rkmpp"
2813 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2814 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2815 h264_vaapi_encoder_select="vaapi_encode golomb"
2816 h264_vda_decoder_deps="vda"
2817 h264_vda_decoder_select="h264_decoder"
2818 h264_vdpau_decoder_deps="vdpau"
2819 h264_vdpau_decoder_select="h264_decoder"
2820 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2821 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2822 hevc_cuvid_decoder_deps="cuda cuvid"
2823 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2824 hevc_mediacodec_decoder_deps="mediacodec"
2825 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2826 hevc_nvenc_encoder_deps="nvenc"
2827 hevc_qsv_decoder_deps="libmfx"
2828 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2829 hevc_qsv_encoder_deps="libmfx"
2830 hevc_qsv_encoder_select="hevcparse qsvenc"
2831 hevc_rkmpp_decoder_deps="rkmpp"
2832 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2833 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2834 hevc_vaapi_encoder_select="vaapi_encode golomb"
2835 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2836 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2837 mjpeg_cuvid_decoder_deps="cuda cuvid"
2838 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2839 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2840 mpeg1_cuvid_decoder_deps="cuda cuvid"
2841 mpeg1_vdpau_decoder_deps="vdpau"
2842 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2843 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2844 mpeg2_crystalhd_decoder_select="crystalhd"
2845 mpeg2_cuvid_decoder_deps="cuda cuvid"
2846 mpeg2_mmal_decoder_deps="mmal"
2847 mpeg2_mediacodec_decoder_deps="mediacodec"
2848 mpeg2_qsv_decoder_deps="libmfx"
2849 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2850 mpeg2_qsv_encoder_deps="libmfx"
2851 mpeg2_qsv_encoder_select="qsvenc"
2852 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2853 mpeg2_vaapi_encoder_select="vaapi_encode"
2854 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2855 mpeg4_crystalhd_decoder_select="crystalhd"
2856 mpeg4_cuvid_decoder_deps="cuda cuvid"
2857 mpeg4_mediacodec_decoder_deps="mediacodec"
2858 mpeg4_mmal_decoder_deps="mmal"
2859 mpeg4_omx_encoder_deps="omx"
2860 mpeg4_vdpau_decoder_deps="vdpau"
2861 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2862 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2863 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2864 mpeg_vdpau_decoder_deps="vdpau"
2865 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2866 msmpeg4_crystalhd_decoder_select="crystalhd"
2867 nvenc_h264_encoder_select="h264_nvenc_encoder"
2868 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2869 vc1_crystalhd_decoder_select="crystalhd"
2870 vc1_cuvid_decoder_deps="cuda cuvid"
2871 vc1_mmal_decoder_deps="mmal"
2872 vc1_vdpau_decoder_deps="vdpau"
2873 vc1_vdpau_decoder_select="vc1_decoder"
2874 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2875 vp8_cuvid_decoder_deps="cuda cuvid"
2876 vp8_mediacodec_decoder_deps="mediacodec"
2877 vp8_qsv_decoder_deps="libmfx"
2878 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2879 vp8_rkmpp_decoder_deps="rkmpp"
2880 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2881 vp8_vaapi_encoder_select="vaapi_encode"
2882 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2883 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2884 vp9_cuvid_decoder_deps="cuda cuvid"
2885 vp9_mediacodec_decoder_deps="mediacodec"
2886 vp9_rkmpp_decoder_deps="rkmpp"
2887 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2888 vp9_vaapi_encoder_select="vaapi_encode"
2889 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2890 wmv3_crystalhd_decoder_select="crystalhd"
2891 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2892
2893 # parsers
2894 h264_parser_select="golomb h264dsp h264parse"
2895 hevc_parser_select="hevcparse"
2896 mpegaudio_parser_select="mpegaudioheader"
2897 mpegvideo_parser_select="mpegvideo"
2898 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2899 vc1_parser_select="vc1dsp"
2900
2901 # bitstream_filters
2902 mjpeg2jpeg_bsf_select="jpegtables"
2903
2904 # external libraries
2905 aac_at_decoder_deps="audiotoolbox"
2906 ac3_at_decoder_deps="audiotoolbox"
2907 ac3_at_decoder_select="ac3_parser"
2908 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2909 alac_at_decoder_deps="audiotoolbox"
2910 amr_nb_at_decoder_deps="audiotoolbox"
2911 avisynth_deps_any="libdl LoadLibrary"
2912 avisynth_demuxer_deps="avisynth"
2913 avisynth_demuxer_select="riffdec"
2914 eac3_at_decoder_deps="audiotoolbox"
2915 eac3_at_decoder_select="ac3_parser"
2916 gsm_ms_at_decoder_deps="audiotoolbox"
2917 ilbc_at_decoder_deps="audiotoolbox"
2918 mp1_at_decoder_deps="audiotoolbox"
2919 mp2_at_decoder_deps="audiotoolbox"
2920 mp3_at_decoder_deps="audiotoolbox"
2921 mp1_at_decoder_select="mpegaudioheader"
2922 mp2_at_decoder_select="mpegaudioheader"
2923 mp3_at_decoder_select="mpegaudioheader"
2924 pcm_alaw_at_decoder_deps="audiotoolbox"
2925 pcm_mulaw_at_decoder_deps="audiotoolbox"
2926 qdmc_at_decoder_deps="audiotoolbox"
2927 qdm2_at_decoder_deps="audiotoolbox"
2928 aac_at_encoder_deps="audiotoolbox"
2929 aac_at_encoder_select="audio_frame_queue"
2930 alac_at_encoder_deps="audiotoolbox"
2931 alac_at_encoder_select="audio_frame_queue"
2932 ilbc_at_encoder_deps="audiotoolbox"
2933 ilbc_at_encoder_select="audio_frame_queue"
2934 pcm_alaw_at_encoder_deps="audiotoolbox"
2935 pcm_alaw_at_encoder_select="audio_frame_queue"
2936 pcm_mulaw_at_encoder_deps="audiotoolbox"
2937 pcm_mulaw_at_encoder_select="audio_frame_queue"
2938 chromaprint_muxer_deps="chromaprint"
2939 h264_videotoolbox_encoder_deps="pthreads"
2940 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2941 libcelt_decoder_deps="libcelt"
2942 libfdk_aac_decoder_deps="libfdk_aac"
2943 libfdk_aac_encoder_deps="libfdk_aac"
2944 libfdk_aac_encoder_select="audio_frame_queue"
2945 libgme_demuxer_deps="libgme"
2946 libgsm_decoder_deps="libgsm"
2947 libgsm_encoder_deps="libgsm"
2948 libgsm_ms_decoder_deps="libgsm"
2949 libgsm_ms_encoder_deps="libgsm"
2950 libilbc_decoder_deps="libilbc"
2951 libilbc_encoder_deps="libilbc"
2952 libkvazaar_encoder_deps="libkvazaar"
2953 libmodplug_demuxer_deps="libmodplug"
2954 libmp3lame_encoder_deps="libmp3lame"
2955 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2956 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2957 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2958 libopencore_amrnb_encoder_select="audio_frame_queue"
2959 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2960 libopenh264_decoder_deps="libopenh264"
2961 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2962 libopenh264_encoder_deps="libopenh264"
2963 libopenjpeg_decoder_deps="libopenjpeg"
2964 libopenjpeg_encoder_deps="libopenjpeg"
2965 libopenmpt_demuxer_deps="libopenmpt"
2966 libopus_decoder_deps="libopus"
2967 libopus_encoder_deps="libopus"
2968 libopus_encoder_select="audio_frame_queue"
2969 librsvg_decoder_deps="librsvg"
2970 libshine_encoder_deps="libshine"
2971 libshine_encoder_select="audio_frame_queue"
2972 libspeex_decoder_deps="libspeex"
2973 libspeex_encoder_deps="libspeex"
2974 libspeex_encoder_select="audio_frame_queue"
2975 libtheora_encoder_deps="libtheora"
2976 libtwolame_encoder_deps="libtwolame"
2977 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2978 libvorbis_decoder_deps="libvorbis"
2979 libvorbis_encoder_deps="libvorbis"
2980 libvorbis_encoder_select="audio_frame_queue"
2981 libvpx_vp8_decoder_deps="libvpx"
2982 libvpx_vp8_encoder_deps="libvpx"
2983 libvpx_vp9_decoder_deps="libvpx"
2984 libvpx_vp9_encoder_deps="libvpx"
2985 libwavpack_encoder_deps="libwavpack"
2986 libwavpack_encoder_select="audio_frame_queue"
2987 libwebp_encoder_deps="libwebp"
2988 libwebp_anim_encoder_deps="libwebp"
2989 libx262_encoder_deps="libx262"
2990 libx264_encoder_deps="libx264"
2991 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2992 libx264rgb_encoder_select="libx264_encoder"
2993 libx265_encoder_deps="libx265"
2994 libxavs_encoder_deps="libxavs"
2995 libxvid_encoder_deps="libxvid"
2996 libzvbi_teletext_decoder_deps="libzvbi"
2997 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2998 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2999 videotoolbox_encoder_suggest="vda_framework"
3000
3001 # demuxers / muxers
3002 ac3_demuxer_select="ac3_parser"
3003 aiff_muxer_select="iso_media"
3004 asf_demuxer_select="riffdec"
3005 asf_o_demuxer_select="riffdec"
3006 asf_muxer_select="riffenc"
3007 asf_stream_muxer_select="asf_muxer"
3008 avi_demuxer_select="iso_media riffdec exif"
3009 avi_muxer_select="riffenc"
3010 caf_demuxer_select="iso_media riffdec"
3011 caf_muxer_select="iso_media"
3012 dash_muxer_select="mp4_muxer"
3013 dash_demuxer_deps="libxml2"
3014 dirac_demuxer_select="dirac_parser"
3015 dts_demuxer_select="dca_parser"
3016 dtshd_demuxer_select="dca_parser"
3017 dv_demuxer_select="dvprofile"
3018 dv_muxer_select="dvprofile"
3019 dxa_demuxer_select="riffdec"
3020 eac3_demuxer_select="ac3_parser"
3021 f4v_muxer_select="mov_muxer"
3022 fifo_muxer_deps="threads"
3023 flac_demuxer_select="flac_parser"
3024 hds_muxer_select="flv_muxer"
3025 hls_muxer_select="mpegts_muxer"
3026 image2_alias_pix_demuxer_select="image2_demuxer"
3027 image2_brender_pix_demuxer_select="image2_demuxer"
3028 ipod_muxer_select="mov_muxer"
3029 ismv_muxer_select="mov_muxer"
3030 matroska_audio_muxer_select="matroska_muxer"
3031 matroska_demuxer_select="iso_media riffdec"
3032 matroska_demuxer_suggest="bzlib lzo zlib"
3033 matroska_muxer_select="iso_media riffenc"
3034 mmf_muxer_select="riffenc"
3035 mov_demuxer_select="iso_media riffdec"
3036 mov_demuxer_suggest="zlib"
3037 mov_muxer_select="iso_media riffenc rtpenc_chain"
3038 mp3_demuxer_select="mpegaudio_parser"
3039 mp3_muxer_select="mpegaudioheader"
3040 mp4_muxer_select="mov_muxer"
3041 mpegts_demuxer_select="iso_media"
3042 mpegts_muxer_select="adts_muxer latm_muxer"
3043 mpegtsraw_demuxer_select="mpegts_demuxer"
3044 mxf_d10_muxer_select="mxf_muxer"
3045 mxf_opatom_muxer_select="mxf_muxer"
3046 nut_muxer_select="riffenc"
3047 nuv_demuxer_select="riffdec"
3048 oga_muxer_select="ogg_muxer"
3049 ogg_demuxer_select="dirac_parse"
3050 ogv_muxer_select="ogg_muxer"
3051 opus_muxer_select="ogg_muxer"
3052 psp_muxer_select="mov_muxer"
3053 rtp_demuxer_select="sdp_demuxer"
3054 rtp_muxer_select="golomb"
3055 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3056 rtsp_demuxer_select="http_protocol rtpdec"
3057 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3058 sap_demuxer_select="sdp_demuxer"
3059 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3060 sdp_demuxer_select="rtpdec"
3061 smoothstreaming_muxer_select="ismv_muxer"
3062 spdif_muxer_select="aac_parser"
3063 spx_muxer_select="ogg_muxer"
3064 swf_demuxer_suggest="zlib"
3065 tak_demuxer_select="tak_parser"
3066 tg2_muxer_select="mov_muxer"
3067 tgp_muxer_select="mov_muxer"
3068 vobsub_demuxer_select="mpegps_demuxer"
3069 w64_demuxer_select="wav_demuxer"
3070 w64_muxer_select="wav_muxer"
3071 wav_demuxer_select="riffdec"
3072 wav_muxer_select="riffenc"
3073 webm_muxer_select="iso_media riffenc"
3074 webm_dash_manifest_demuxer_select="matroska_demuxer"
3075 wtv_demuxer_select="mpegts_demuxer riffdec"
3076 wtv_muxer_select="mpegts_muxer riffenc"
3077 xmv_demuxer_select="riffdec"
3078 xwma_demuxer_select="riffdec"
3079
3080 # indevs / outdevs
3081 alsa_indev_deps="alsa"
3082 alsa_outdev_deps="alsa"
3083 avfoundation_indev_deps="avfoundation pthreads"
3084 avfoundation_indev_extralibs="-framework Foundation -framework CoreVideo -framework CoreMedia"
3085 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3086 caca_outdev_deps="libcaca"
3087 decklink_indev_deps="decklink threads libdl"
3088 decklink_indev_extralibs="-lstdc++"
3089 decklink_outdev_deps="decklink threads libdl"
3090 decklink_outdev_extralibs="-lstdc++"
3091 libndi_newtek_indev_deps="libndi_newtek libdl"
3092 libndi_newtek_indev_extralibs="-lndi"
3093 libndi_newtek_outdev_deps="libndi_newtek libdl"
3094 libndi_newtek_outdev_extralibs="-lndi"
3095 dshow_indev_deps="IBaseFilter"
3096 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3097 fbdev_indev_deps="linux_fb_h"
3098 fbdev_outdev_deps="linux_fb_h"
3099 gdigrab_indev_deps="CreateDIBSection"
3100 gdigrab_indev_extralibs="-lgdi32"
3101 gdigrab_indev_select="bmp_decoder"
3102 iec61883_indev_deps="libiec61883"
3103 jack_indev_deps="jack"
3104 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3105 kmsgrab_indev_deps="libdrm"
3106 lavfi_indev_deps="avfilter"
3107 libcdio_indev_deps="libcdio"
3108 libdc1394_indev_deps="libdc1394"
3109 libv4l2_indev_deps="libv4l2"
3110 openal_indev_deps="openal"
3111 opengl_outdev_deps="opengl"
3112 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3113 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3114 pulse_indev_deps="libpulse"
3115 pulse_outdev_deps="libpulse"
3116 sdl2_outdev_deps="sdl2"
3117 sndio_indev_deps="sndio"
3118 sndio_outdev_deps="sndio"
3119 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3120 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3121 vfwcap_indev_deps="vfw32 vfwcap_defines"
3122 xcbgrab_indev_deps="libxcb"
3123 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3124 xv_outdev_extralibs="-lXv -lX11 -lXext"
3125
3126 # protocols
3127 async_protocol_deps="threads"
3128 bluray_protocol_deps="libbluray"
3129 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3130 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3131 ffrtmpcrypt_protocol_select="tcp_protocol"
3132 ffrtmphttp_protocol_conflict="librtmp_protocol"
3133 ffrtmphttp_protocol_select="http_protocol"
3134 ftp_protocol_select="tcp_protocol"
3135 gopher_protocol_select="network"
3136 http_protocol_select="tcp_protocol"
3137 httpproxy_protocol_select="tcp_protocol"
3138 https_protocol_select="tls_protocol"
3139 icecast_protocol_select="http_protocol"
3140 librtmp_protocol_deps="librtmp"
3141 librtmpe_protocol_deps="librtmp"
3142 librtmps_protocol_deps="librtmp"
3143 librtmpt_protocol_deps="librtmp"
3144 librtmpte_protocol_deps="librtmp"
3145 libsmbclient_protocol_deps="libsmbclient gplv3"
3146 libssh_protocol_deps="libssh"
3147 mmsh_protocol_select="http_protocol"
3148 mmst_protocol_select="network"
3149 rtmp_protocol_conflict="librtmp_protocol"
3150 rtmp_protocol_select="tcp_protocol"
3151 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3152 rtmps_protocol_conflict="librtmp_protocol"
3153 rtmps_protocol_select="tls_protocol"
3154 rtmpt_protocol_select="ffrtmphttp_protocol"
3155 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3156 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3157 rtp_protocol_select="udp_protocol"
3158 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3159 sctp_protocol_select="network"
3160 srtp_protocol_select="rtp_protocol srtp"
3161 tcp_protocol_select="network"
3162 tls_gnutls_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol"
3163 tls_gnutls_protocol_deps="gnutls"
3164 tls_gnutls_protocol_select="tcp_protocol"
3165 tls_openssl_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol"
3166 tls_openssl_protocol_deps="openssl"
3167 tls_openssl_protocol_select="tcp_protocol"
3168 tls_schannel_protocol_deps="schannel"
3169 tls_schannel_protocol_select="tcp_protocol"
3170 tls_securetransport_protocol_deps="securetransport"
3171 tls_securetransport_protocol_select="tcp_protocol"
3172 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3173 udp_protocol_select="network"
3174 udplite_protocol_select="network"
3175 unix_protocol_deps="sys_un_h"
3176 unix_protocol_select="network"
3177
3178 # filters
3179 afftfilt_filter_deps="avcodec"
3180 afftfilt_filter_select="fft"
3181 afir_filter_deps="avcodec"
3182 afir_filter_select="fft"
3183 amovie_filter_deps="avcodec avformat"
3184 aresample_filter_deps="swresample"
3185 ass_filter_deps="libass"
3186 atempo_filter_deps="avcodec"
3187 atempo_filter_select="rdft"
3188 azmq_filter_deps="libzmq"
3189 blackframe_filter_deps="gpl"
3190 boxblur_filter_deps="gpl"
3191 bs2b_filter_deps="libbs2b"
3192 colormatrix_filter_deps="gpl"
3193 coreimage_filter_deps="coreimage appkit"
3194 coreimage_filter_extralibs="-framework OpenGL"
3195 coreimagesrc_filter_deps="coreimage appkit"
3196 coreimagesrc_filter_extralibs="-framework OpenGL"
3197 cover_rect_filter_deps="avcodec avformat gpl"
3198 cropdetect_filter_deps="gpl"
3199 deinterlace_qsv_filter_deps="libmfx"
3200 deinterlace_vaapi_filter_deps="vaapi"
3201 delogo_filter_deps="gpl"
3202 deshake_filter_select="pixelutils"
3203 drawtext_filter_deps="libfreetype"
3204 elbg_filter_deps="avcodec"
3205 eq_filter_deps="gpl"
3206 fftfilt_filter_deps="avcodec"
3207 fftfilt_filter_select="rdft"
3208 find_rect_filter_deps="avcodec avformat gpl"
3209 firequalizer_filter_deps="avcodec"
3210 firequalizer_filter_select="rdft"
3211 flite_filter_deps="libflite"
3212 framerate_filter_select="pixelutils"
3213 frei0r_filter_deps="frei0r libdl"
3214 frei0r_src_filter_deps="frei0r libdl"
3215 fspp_filter_deps="gpl"
3216 geq_filter_deps="gpl"
3217 histeq_filter_deps="gpl"
3218 hqdn3d_filter_deps="gpl"
3219 interlace_filter_deps="gpl"
3220 kerndeint_filter_deps="gpl"
3221 ladspa_filter_deps="ladspa libdl"
3222 mcdeint_filter_deps="avcodec gpl"
3223 movie_filter_deps="avcodec avformat"
3224 mpdecimate_filter_deps="gpl"
3225 mpdecimate_filter_select="pixelutils"
3226 mptestsrc_filter_deps="gpl"
3227 negate_filter_deps="lut_filter"
3228 nnedi_filter_deps="gpl"
3229 ocr_filter_deps="libtesseract"
3230 ocv_filter_deps="libopencv"
3231 owdenoise_filter_deps="gpl"
3232 pan_filter_deps="swresample"
3233 perspective_filter_deps="gpl"
3234 phase_filter_deps="gpl"
3235 pp7_filter_deps="gpl"
3236 pp_filter_deps="gpl postproc"
3237 pullup_filter_deps="gpl"
3238 removelogo_filter_deps="avcodec avformat swscale"
3239 repeatfields_filter_deps="gpl"
3240 resample_filter_deps="avresample"
3241 rubberband_filter_deps="librubberband"
3242 sab_filter_deps="gpl swscale"
3243 scale2ref_filter_deps="swscale"
3244 scale_filter_deps="swscale"
3245 scale_qsv_filter_deps="libmfx"
3246 select_filter_select="pixelutils"
3247 showcqt_filter_deps="avcodec avformat swscale"
3248 showcqt_filter_select="fft"
3249 showfreqs_filter_deps="avcodec"
3250 showfreqs_filter_select="fft"
3251 showspectrum_filter_deps="avcodec"
3252 showspectrum_filter_select="fft"
3253 showspectrumpic_filter_deps="avcodec"
3254 showspectrumpic_filter_select="fft"
3255 signature_filter_deps="gpl avcodec avformat"
3256 smartblur_filter_deps="gpl swscale"
3257 sofalizer_filter_deps="libmysofa avcodec"
3258 sofalizer_filter_select="fft"
3259 spectrumsynth_filter_deps="avcodec"
3260 spectrumsynth_filter_select="fft"
3261 spp_filter_deps="gpl avcodec"
3262 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3263 stereo3d_filter_deps="gpl"
3264 subtitles_filter_deps="avformat avcodec libass"
3265 super2xsai_filter_deps="gpl"
3266 pixfmts_super2xsai_test_deps="super2xsai_filter"
3267 tinterlace_filter_deps="gpl"
3268 tinterlace_merge_test_deps="tinterlace_filter"
3269 tinterlace_pad_test_deps="tinterlace_filter"
3270 tonemap_filter_deps="const_nan"
3271 uspp_filter_deps="gpl avcodec"
3272 vaguedenoiser_filter_deps="gpl"
3273 vidstabdetect_filter_deps="libvidstab"
3274 vidstabtransform_filter_deps="libvidstab"
3275 libvmaf_filter_deps="libvmaf"
3276 zmq_filter_deps="libzmq"
3277 zoompan_filter_deps="swscale"
3278 zscale_filter_deps="libzimg const_nan"
3279 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3280
3281 # examples
3282 avio_dir_cmd_deps="avformat avutil"
3283 avio_reading_deps="avformat avcodec avutil"
3284 decode_audio_example_deps="avcodec avutil"
3285 decode_video_example_deps="avcodec avutil"
3286 demuxing_decoding_example_deps="avcodec avformat avutil"
3287 encode_audio_example_deps="avcodec avutil"
3288 encode_video_example_deps="avcodec avutil"
3289 extract_mvs_example_deps="avcodec avformat avutil"
3290 filter_audio_example_deps="avfilter avutil"
3291 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3292 filtering_video_example_deps="avfilter avcodec avformat avutil"
3293 http_multiclient_example_deps="avformat avutil fork"
3294 hw_decode_example_deps="avcodec avformat avutil"
3295 metadata_example_deps="avformat avutil"
3296 muxing_example_deps="avcodec avformat avutil swscale"
3297 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3298 remuxing_example_deps="avcodec avformat avutil"
3299 resampling_audio_example_deps="avutil swresample"
3300 scaling_video_example_deps="avutil swscale"
3301 transcode_aac_example_deps="avcodec avformat swresample"
3302 transcoding_example_deps="avfilter avcodec avformat avutil"
3303
3304 # libraries, in linking order
3305 avcodec_deps="avutil"
3306 avcodec_select="null_bsf"
3307 avdevice_deps="avformat avcodec avutil"
3308 avfilter_deps="avutil"
3309 avformat_deps="avcodec avutil"
3310 avformat_suggest="network"
3311 avresample_deps="avutil"
3312 postproc_deps="avutil gpl"
3313 swresample_deps="avutil"
3314 swscale_deps="avutil"
3315
3316 # programs
3317 ffmpeg_deps="avcodec avfilter avformat swresample"
3318 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3319                null_filter
3320                trim_filter"
3321 ffplay_deps="avcodec avformat swscale swresample sdl2"
3322 ffplay_extralibs='$sdl2_extralibs'
3323 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3324 ffprobe_deps="avcodec avformat"
3325 ffserver_deps="avformat fork sarestart"
3326 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3327
3328 # documentation
3329 podpages_deps="perl"
3330 manpages_deps="perl pod2man"
3331 htmlpages_deps="perl"
3332 htmlpages_deps_any="makeinfo_html texi2html"
3333 txtpages_deps="perl makeinfo"
3334 doc_deps_any="manpages htmlpages podpages txtpages"
3335
3336 # default parameters
3337
3338 logfile="ffbuild/config.log"
3339
3340 # installation paths
3341 prefix_default="/usr/local"
3342 bindir_default='${prefix}/bin'
3343 datadir_default='${prefix}/share/ffmpeg'
3344 docdir_default='${prefix}/share/doc/ffmpeg'
3345 incdir_default='${prefix}/include'
3346 libdir_default='${prefix}/lib'
3347 mandir_default='${prefix}/share/man'
3348
3349 # toolchain
3350 ar_default="ar"
3351 cc_default="gcc"
3352 cxx_default="g++"
3353 host_cc_default="gcc"
3354 doxygen_default="doxygen"
3355 install="install"
3356 ln_s_default="ln -s -f"
3357 nm_default="nm -g"
3358 pkg_config_default=pkg-config
3359 ranlib_default="ranlib"
3360 strip_default="strip"
3361 version_script='--version-script'
3362 x86asmexe_default="nasm"
3363 windres_default="windres"
3364 nvcc_default="nvcc"
3365 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3366
3367 # OS
3368 target_os_default=$(tolower $(uname -s))
3369 host_os=$target_os_default
3370
3371 # machine
3372 if test "$target_os_default" = aix; then
3373     arch_default=$(uname -p)
3374     strip_default="strip -X32_64"
3375 else
3376     arch_default=$(uname -m)
3377 fi
3378 cpu="generic"
3379 intrinsics="none"
3380
3381 # configurable options
3382 enable $PROGRAM_LIST
3383 enable $DOCUMENT_LIST
3384 enable $EXAMPLE_LIST
3385 enable $(filter_out avresample $LIBRARY_LIST)
3386 enable stripping
3387
3388 enable asm
3389 enable debug
3390 enable doc
3391 enable faan faandct faanidct
3392 enable optimizations
3393 enable runtime_cpudetect
3394 enable safe_bitstream_reader
3395 enable static
3396 enable swscale_alpha
3397 enable valgrind_backtrace
3398
3399 sws_max_filter_size_default=256
3400 set_default sws_max_filter_size
3401
3402 # build settings
3403 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3404 LIBPREF="lib"
3405 LIBSUF=".a"
3406 FULLNAME='$(NAME)$(BUILDSUF)'
3407 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3408 SLIBPREF="lib"
3409 SLIBSUF=".so"
3410 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3411 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3412 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3413 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3414 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3415 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3416 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3417
3418 asflags_filter=echo
3419 cflags_filter=echo
3420 ldflags_filter=echo
3421
3422 AS_C='-c'
3423 AS_O='-o $@'
3424 CC_C='-c'
3425 CC_E='-E -o $@'
3426 CC_O='-o $@'
3427 CXX_C='-c'
3428 CXX_O='-o $@'
3429 OBJCC_C='-c'
3430 OBJCC_E='-E -o $@'
3431 OBJCC_O='-o $@'
3432 X86ASM_O='-o $@'
3433 LD_O='-o $@'
3434 LD_LIB='-l%'
3435 LD_PATH='-L'
3436 HOSTCC_C='-c'
3437 HOSTCC_E='-E -o $@'
3438 HOSTCC_O='-o $@'
3439 HOSTLD_O='-o $@'
3440 NVCC_C='-c'
3441 NVCC_O='-o $@'
3442
3443 host_extralibs='-lm'
3444 host_cflags_filter=echo
3445 host_ldflags_filter=echo
3446
3447 target_path='$(CURDIR)'
3448
3449 # since the object filename is not given with the -MM flag, the compiler
3450 # is only able to print the basename, and we must add the path ourselves
3451 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3452 DEPFLAGS='-MM'
3453
3454 mkdir -p ffbuild
3455
3456 # find source path
3457 if test -f configure; then
3458     source_path=.
3459 else
3460     source_path=$(cd $(dirname "$0"); pwd)
3461     case "$source_path" in
3462         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3463     esac
3464     test -e "$source_path/config.h" &&
3465         die "Out of tree builds are impossible with config.h in source dir."
3466 fi
3467
3468 for v in "$@"; do
3469     r=${v#*=}
3470     l=${v%"$r"}
3471     r=$(sh_quote "$r")
3472     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3473 done
3474
3475 find_things(){
3476     thing=$1
3477     pattern=$2
3478     file=$source_path/$3
3479     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3480 }
3481
3482 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3483 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3484 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3485 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3486 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3487 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3488 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3489 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3490 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3491
3492 find_things_extern(){
3493     thing=$1
3494     pattern=$2
3495     file=$source_path/$3
3496     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3497 }
3498
3499 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3500 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3501
3502 ALL_COMPONENTS="
3503     $BSF_LIST
3504     $DECODER_LIST
3505     $DEMUXER_LIST
3506     $ENCODER_LIST
3507     $FILTER_LIST
3508     $HWACCEL_LIST
3509     $INDEV_LIST
3510     $MUXER_LIST
3511     $OUTDEV_LIST
3512     $PARSER_LIST
3513     $PROTOCOL_LIST
3514 "
3515
3516 for n in $COMPONENT_LIST; do
3517     v=$(toupper ${n%s})_LIST
3518     eval enable \$$v
3519     eval ${n}_if_any="\$$v"
3520 done
3521
3522 enable $ARCH_EXT_LIST
3523
3524 die_unknown(){
3525     echo "Unknown option \"$1\"."
3526     echo "See $0 --help for available options."
3527     exit 1
3528 }
3529
3530 print_in_columns() {
3531     cols=$(expr $ncols / 24)
3532     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3533 }
3534
3535 show_list() {
3536     suffix=_$1
3537     shift
3538     echo $* | sed s/$suffix//g | print_in_columns
3539     exit 0
3540 }
3541
3542 rand_list(){
3543     IFS=', '
3544     set -- $*
3545     unset IFS
3546     for thing; do
3547         comp=${thing%:*}
3548         prob=${thing#$comp}
3549         prob=${prob#:}
3550         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3551         echo "prob ${prob:-0.5}"
3552         printf '%s\n' $comp
3553     done
3554 }
3555
3556 do_random(){
3557     action=$1
3558     shift
3559     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3560     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3561 }
3562
3563 for opt do
3564     optval="${opt#*=}"
3565     case "$opt" in
3566         --extra-ldflags=*)
3567             add_ldflags $optval
3568         ;;
3569         --extra-ldexeflags=*)
3570             add_ldexeflags $optval
3571         ;;
3572         --extra-ldlibflags=*)
3573             add_ldlibflags $optval
3574         ;;
3575         --extra-libs=*)
3576             add_extralibs $optval
3577         ;;
3578         --disable-devices)
3579             disable $INDEV_LIST $OUTDEV_LIST
3580         ;;
3581         --enable-debug=*)
3582             debuglevel="$optval"
3583         ;;
3584         --disable-programs)
3585             disable $PROGRAM_LIST
3586         ;;
3587         --disable-everything)
3588             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3589         ;;
3590         --disable-all)
3591             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3592             disable $LIBRARY_LIST $PROGRAM_LIST doc
3593             enable avutil
3594         ;;
3595         --enable-random|--disable-random)
3596             action=${opt%%-random}
3597             do_random ${action#--} $COMPONENT_LIST
3598         ;;
3599         --enable-random=*|--disable-random=*)
3600             action=${opt%%-random=*}
3601             do_random ${action#--} $optval
3602         ;;
3603         --enable-sdl)
3604             enable sdl2
3605         ;;
3606         --enable-*=*|--disable-*=*)
3607             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3608             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3609             eval list=\$$(toupper $thing)_LIST
3610             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3611             list=$(filter "$name" $list)
3612             [ "$list" = "" ] && warn "Option $opt did not match anything"
3613             $action $list
3614         ;;
3615         --enable-yasm|--disable-yasm)
3616             warn "The ${opt} option is only provided for compatibility and will be\n"\
3617                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3618             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3619         ;;
3620         --yasmexe=*)
3621             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3622                  "removed in the future. Use --x86asmexe instead."
3623             x86asmexe="$optval"
3624         ;;
3625         --enable-?*|--disable-?*)
3626             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3627             if is_in $option $COMPONENT_LIST; then
3628                 test $action = disable && action=unset
3629                 eval $action \$$(toupper ${option%s})_LIST
3630             elif is_in $option $CMDLINE_SELECT; then
3631                 $action $option
3632             else
3633                 die_unknown $opt
3634             fi
3635         ;;
3636         --list-*)
3637             NAME="${opt#--list-}"
3638             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3639             NAME=${NAME%s}
3640             eval show_list $NAME \$$(toupper $NAME)_LIST
3641         ;;
3642         --help|-h) show_help
3643         ;;
3644         --quiet|-q) quiet=yes
3645         ;;
3646         --fatal-warnings) enable fatal_warnings
3647         ;;
3648         --libfuzzer=*)
3649             libfuzzer_path="$optval"
3650         ;;
3651         *)
3652             optname="${opt%%=*}"
3653             optname="${optname#--}"
3654             optname=$(echo "$optname" | sed 's/-/_/g')
3655             if is_in $optname $CMDLINE_SET; then
3656                 eval $optname='$optval'
3657             elif is_in $optname $CMDLINE_APPEND; then
3658                 append $optname "$optval"
3659             else
3660                 die_unknown $opt
3661             fi
3662         ;;
3663     esac
3664 done
3665
3666 for e in $env; do
3667     eval "export $e"
3668 done
3669
3670 if disabled autodetect; then
3671
3672     # Unless iconv is explicitely disabled by the user, we still want to probe
3673     # for the iconv from the libc.
3674     disabled iconv || enable libc_iconv
3675
3676     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3677     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3678 fi
3679 # Mark specifically enabled, but normally autodetected libraries as requested.
3680 for lib in $AUTODETECT_LIBS; do
3681     enabled $lib && request $lib
3682 done
3683 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3684 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3685 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3686
3687 disabled logging && logfile=/dev/null
3688
3689 die_license_disabled() {
3690     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3691 }
3692
3693 die_license_disabled_gpl() {
3694     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3695 }
3696
3697 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3698 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3699
3700 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3701 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3702
3703 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3704
3705 # Disable all the library-specific components if the library itself
3706 # is disabled, see AVCODEC_LIST and following _LIST variables.
3707
3708 disable_components(){
3709     disabled ${1} && disable $(
3710         eval components="\$$(toupper ${1})_COMPONENTS"
3711         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3712     )
3713 }
3714
3715 map 'disable_components $v' $LIBRARY_LIST
3716
3717 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3718 set >> $logfile
3719
3720 test -n "$valgrind" && toolchain="valgrind-memcheck"
3721
3722 enabled ossfuzz && {
3723     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3724     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3725 }
3726
3727 case "$toolchain" in
3728     *-asan)
3729         cc_default="${toolchain%-asan}"
3730         add_cflags  -fsanitize=address
3731         add_ldflags -fsanitize=address
3732     ;;
3733     *-msan)
3734         cc_default="${toolchain%-msan}"
3735         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3736         add_ldflags -fsanitize=memory
3737     ;;
3738     *-tsan)
3739         cc_default="${toolchain%-tsan}"
3740         add_cflags  -fsanitize=thread -fPIE
3741         add_ldflags -fsanitize=thread -pie
3742         case "$toolchain" in
3743             gcc-tsan)
3744                 add_cflags  -fPIC
3745                 add_ldflags -fPIC
3746                 ;;
3747         esac
3748     ;;
3749     *-usan)
3750         cc_default="${toolchain%-usan}"
3751         add_cflags  -fsanitize=undefined
3752         add_ldflags -fsanitize=undefined
3753     ;;
3754     valgrind-*)
3755         target_exec_default="valgrind"
3756         case "$toolchain" in
3757             valgrind-massif)
3758                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3759                 ;;
3760             valgrind-memcheck)
3761                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3762                 ;;
3763         esac
3764     ;;
3765     msvc)
3766         # Check whether the current MSVC version needs the C99 converter.
3767         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3768         # support enough of C99 to build ffmpeg. Default to the new
3769         # behaviour if the regexp was unable to match anything, since this
3770         # successfully parses the version number of existing supported
3771         # versions that require the converter (MSVC 2010 and 2012).
3772         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3773         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3774             cc_default="cl"
3775             cxx_default="cl"
3776         else
3777             cc_default="c99wrap cl"
3778             cxx_default="c99wrap cl"
3779         fi
3780         ld_default="$source_path/compat/windows/mslink"
3781         nm_default="dumpbin -symbols"
3782         ar_default="lib"
3783         case "$arch" in
3784         arm*)
3785             as_default="armasm"
3786             ;;
3787         esac
3788         target_os_default="win32"
3789         # Use a relative path for TMPDIR. This makes sure all the
3790         # ffconf temp files are written with a relative path, avoiding
3791         # issues with msys/win32 path conversion for MSVC parameters
3792         # such as -Fo<file> or -out:<file>.
3793         TMPDIR=.
3794     ;;
3795     icl)
3796         cc_default="icl"
3797         ld_default="xilink"
3798         nm_default="dumpbin -symbols"
3799         ar_default="xilib"
3800         target_os_default="win32"
3801         TMPDIR=.
3802     ;;
3803     gcov)
3804         add_cflags  -fprofile-arcs -ftest-coverage
3805         add_ldflags -fprofile-arcs -ftest-coverage
3806     ;;
3807     llvm-cov)
3808         add_cflags -fprofile-arcs -ftest-coverage
3809         add_ldflags --coverage
3810     ;;
3811     hardened)
3812         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3813         add_cflags   -fno-strict-overflow -fstack-protector-all
3814         add_ldflags  -Wl,-z,relro -Wl,-z,now
3815         add_cflags   -fPIE
3816         add_ldexeflags -fPIE -pie
3817     ;;
3818     ?*)
3819         die "Unknown toolchain $toolchain"
3820     ;;
3821 esac
3822
3823 test -n "$cross_prefix" && enable cross_compile
3824
3825 if enabled cross_compile; then
3826     test -n "$arch" && test -n "$target_os" ||
3827         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3828 fi
3829
3830 ar_default="${cross_prefix}${ar_default}"
3831 cc_default="${cross_prefix}${cc_default}"
3832 cxx_default="${cross_prefix}${cxx_default}"
3833 nm_default="${cross_prefix}${nm_default}"
3834 pkg_config_default="${cross_prefix}${pkg_config_default}"
3835 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3836     ranlib_default="${cross_prefix}${ranlib_default} -D"
3837 else
3838     ranlib_default="${cross_prefix}${ranlib_default}"
3839 fi
3840 strip_default="${cross_prefix}${strip_default}"
3841 windres_default="${cross_prefix}${windres_default}"
3842
3843 sysinclude_default="${sysroot}/usr/include"
3844
3845 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3846     target_exec target_os x86asmexe nvcc
3847 enabled cross_compile || host_cc_default=$cc
3848 set_default host_cc
3849
3850 pkg_config_fail_message=""
3851 if ! $pkg_config --version >/dev/null 2>&1; then
3852     warn "$pkg_config not found, library detection may fail."
3853     pkg_config=false
3854 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3855     pkg_config_fail_message="
3856 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3857 fi
3858
3859 if test $doxygen != $doxygen_default && \
3860   ! $doxygen --version >/dev/null 2>&1; then
3861     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3862 fi
3863
3864 exesuf() {
3865     case $1 in
3866         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3867     esac
3868 }
3869
3870 EXESUF=$(exesuf $target_os)
3871 HOSTEXESUF=$(exesuf $host_os)
3872
3873 # set temporary file name
3874 : ${TMPDIR:=$TEMPDIR}
3875 : ${TMPDIR:=$TMP}
3876 : ${TMPDIR:=/tmp}
3877
3878 if [ -n "$tempprefix" ] ; then
3879     mktemp(){
3880         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3881         echo "$tmpname"
3882         mkdir "$tmpname"
3883     }
3884 elif ! check_cmd mktemp -u XXXXXX; then
3885     # simple replacement for missing mktemp
3886     # NOT SAFE FOR GENERAL USE
3887     mktemp(){
3888         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3889         echo "$tmpname"
3890         mkdir "$tmpname"
3891     }
3892 fi
3893
3894 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3895     die "Unable to create temporary directory in $TMPDIR."
3896
3897 tmpfile(){
3898     tmp="${FFTMPDIR}/test"$2
3899     (set -C; exec > $tmp) 2> /dev/null ||
3900         die "Unable to create temporary file in $FFTMPDIR."
3901     eval $1=$tmp
3902 }
3903
3904 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3905 trap 'exit 2' INT
3906
3907 tmpfile TMPASM .asm
3908 tmpfile TMPC   .c
3909 tmpfile TMPCPP .cpp
3910 tmpfile TMPE   $EXESUF
3911 tmpfile TMPH   .h
3912 tmpfile TMPM   .m
3913 tmpfile TMPO   .o
3914 tmpfile TMPS   .S
3915 tmpfile TMPSH  .sh
3916 tmpfile TMPV   .ver
3917
3918 unset -f mktemp
3919
3920 chmod +x $TMPE
3921
3922 # make sure we can execute files in $TMPDIR
3923 cat > $TMPSH 2>> $logfile <<EOF
3924 #! /bin/sh
3925 EOF
3926 chmod +x $TMPSH >> $logfile 2>&1
3927 if ! $TMPSH >> $logfile 2>&1; then
3928     cat <<EOF
3929 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3930 variable to another directory and make sure that it is not mounted noexec.
3931 EOF
3932     die "Sanity test failed."
3933 fi
3934
3935 armasm_flags(){
3936     for flag; do
3937         case $flag in
3938             # Filter out MSVC cl.exe options from cflags that shouldn't
3939             # be passed to gas-preprocessor
3940             -M[TD]*)                                            ;;
3941             *)                  echo $flag                      ;;
3942         esac
3943    done
3944 }
3945
3946 ccc_flags(){
3947     for flag; do
3948         case $flag in
3949             -std=c99)           echo -c99                       ;;
3950             -mcpu=*)            echo -arch ${flag#*=}           ;;
3951             -mieee)             echo -ieee                      ;;
3952             -O*|-fast)          echo $flag                      ;;
3953             -fno-math-errno)    echo -assume nomath_errno       ;;
3954             -g)                 echo -g3                        ;;
3955             -Wall)              echo -msg_enable level2         ;;
3956             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3957             -Wl,*)              echo $flag                      ;;
3958             -f*|-W*)                                            ;;
3959             *)                  echo $flag                      ;;
3960         esac
3961    done
3962 }
3963
3964 cparser_flags(){
3965     for flag; do
3966         case $flag in
3967             -Wno-switch)             echo -Wno-switch-enum ;;
3968             -Wno-format-zero-length) ;;
3969             -Wdisabled-optimization) ;;
3970             -Wno-pointer-sign)       echo -Wno-other ;;
3971             *)                       echo $flag ;;
3972         esac
3973     done
3974 }
3975
3976 msvc_common_flags(){
3977     for flag; do
3978         case $flag in
3979             # In addition to specifying certain flags under the compiler
3980             # specific filters, they must be specified here as well or else the
3981             # generic catch all at the bottom will print the original flag.
3982             -Wall)                ;;
3983             -Wextra)              ;;
3984             -std=c99)             ;;
3985             # Common flags
3986             -fomit-frame-pointer) ;;
3987             -g)                   echo -Z7 ;;
3988             -fno-math-errno)      ;;
3989             -fno-common)          ;;
3990             -fno-signed-zeros)    ;;
3991             -fPIC)                ;;
3992             -mthumb)              ;;
3993             -march=*)             ;;
3994             -lz)                  echo zlib.lib ;;
3995             -lx264)               echo libx264.lib ;;
3996             -lstdc++)             ;;
3997             -l*)                  echo ${flag#-l}.lib ;;
3998             -LARGEADDRESSAWARE)   echo $flag ;;
3999             -L*)                  echo -libpath:${flag#-L} ;;
4000             *)                    echo $flag ;;
4001         esac
4002     done
4003 }
4004
4005 msvc_flags(){
4006     msvc_common_flags "$@"
4007     for flag; do
4008         case $flag in
4009             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4010                                        -wd4554 ;;
4011             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4012                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4013                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4014                                        -wd4307 \
4015                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4016         esac
4017     done
4018 }
4019
4020 icl_flags(){
4021     msvc_common_flags "$@"
4022     for flag; do
4023         case $flag in
4024             # Despite what Intel's documentation says -Wall, which is supported
4025             # on Windows, does enable remarks so disable them here.
4026             -Wall)                echo $flag -Qdiag-disable:remark ;;
4027             -std=c99)             echo -Qstd=c99 ;;
4028             -flto)                echo -ipo ;;
4029         esac
4030     done
4031 }
4032
4033 icc_flags(){
4034     for flag; do
4035         case $flag in
4036             -flto)                echo -ipo ;;
4037             *)                    echo $flag ;;
4038         esac
4039     done
4040 }
4041
4042 pgi_flags(){
4043     for flag; do
4044         case $flag in
4045             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4046             -fomit-frame-pointer) echo -Mnoframe ;;
4047             -g)                   echo -gopt ;;
4048             *)                    echo $flag ;;
4049         esac
4050     done
4051 }
4052
4053 suncc_flags(){
4054     for flag; do
4055         case $flag in
4056             -march=*|-mcpu=*)
4057                 case "${flag#*=}" in
4058                     native)                   echo -xtarget=native       ;;
4059                     v9|niagara)               echo -xarch=sparc          ;;
4060                     ultrasparc)               echo -xarch=sparcvis       ;;
4061                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4062                     i586|pentium)             echo -xchip=pentium        ;;
4063                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4064                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4065                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4066                     pentium4*)          echo -xtarget=pentium4           ;;
4067                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4068                     *-sse3)             echo -xarch=sse3                 ;;
4069                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4070                     bonnell)                   echo -xarch=ssse3         ;;
4071                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4072                     westmere)                  echo -xtarget=westmere    ;;
4073                     silvermont)                echo -xarch=sse4_2        ;;
4074                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4075                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4076                                                echo -xarch=avx           ;;
4077                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4078                     btver1)                    echo -xarch=amdsse4a      ;;
4079                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4080                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4081                     k8|opteron|athlon64|athlon-fx)
4082                                                echo -xarch=sse2a         ;;
4083                     athlon*)                   echo -xarch=pentium_proa  ;;
4084                 esac
4085                 ;;
4086             -std=c99)             echo -xc99              ;;
4087             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4088             -fPIC)                echo -KPIC -xcode=pic32 ;;
4089             -W*,*)                echo $flag              ;;
4090             -f*-*|-W*|-mimpure-text)                      ;;
4091             -shared)              echo -G                 ;;
4092             *)                    echo $flag              ;;
4093         esac
4094     done
4095 }
4096
4097 tms470_flags(){
4098     for flag; do
4099         case $flag in
4100             -march=*|-mcpu=*)
4101                 case "${flag#*=}" in
4102                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4103                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4104                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4105                     armv6*|arm11*)          echo -mv=6   ;;
4106                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4107                                             echo -mv=5e  ;;
4108                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4109                 esac
4110                 ;;
4111             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4112             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4113             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4114             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4115             -msoft-float)   echo --float_support=vfplib       ;;
4116             -O[0-3]|-mf=*)  echo $flag                        ;;
4117             -g)             echo -g -mn                       ;;
4118             -pds=*)         echo $flag                        ;;
4119             -D*|-I*)        echo $flag                        ;;
4120             --gcc|--abi=*)  echo $flag                        ;;
4121             -me)            echo $flag                        ;;
4122         esac
4123     done
4124 }
4125
4126 probe_cc(){
4127     pfx=$1
4128     _cc=$2
4129     first=$3
4130
4131     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4132     unset _ld_o _ldflags _ld_lib _ld_path
4133     unset _depflags _DEPCMD _DEPFLAGS
4134     _flags_filter=echo
4135
4136     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4137         true # no-op to avoid reading stdin in following checks
4138     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4139         _type=llvm_gcc
4140         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4141         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4142         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4143         _cflags_speed='-O3'
4144         _cflags_size='-Os'
4145     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4146         _type=gcc
4147         gcc_version=$($_cc --version | head -n1)
4148         gcc_basever=$($_cc -dumpversion)
4149         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4150         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4151         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4152         case $gcc_basever in
4153             2) ;;
4154             2.*) ;;
4155             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4156         esac
4157         if [ "$first" = true ]; then
4158             case $gcc_basever in
4159                 4.2*)
4160                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4161             esac
4162         fi
4163         _cflags_speed='-O3'
4164         _cflags_size='-Os'
4165     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4166         _type=icc
4167         _ident=$($_cc --version | head -n1)
4168         _depflags='-MMD'
4169         _cflags_speed='-O3'
4170         _cflags_size='-Os'
4171         _cflags_noopt='-O1'
4172         _flags_filter=icc_flags
4173     elif $_cc -v 2>&1 | grep -q xlc; then
4174         _type=xlc
4175         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4176         _cflags_speed='-O5'
4177         _cflags_size='-O5 -qcompact'
4178     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4179         _type=ccc
4180         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4181         _DEPFLAGS='-M'
4182         _cflags_speed='-fast'
4183         _cflags_size='-O1'
4184         _flags_filter=ccc_flags
4185     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4186         test -d "$sysroot" || die "No valid sysroot specified."
4187         _type=armcc
4188         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4189         armcc_conf="$PWD/armcc.conf"
4190         $_cc --arm_linux_configure                 \
4191              --arm_linux_config_file="$armcc_conf" \
4192              --configure_sysroot="$sysroot"        \
4193              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4194              die "Error creating armcc configuration file."
4195         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4196         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4197         as_default="${cross_prefix}gcc"
4198         _depflags='-MMD'
4199         _cflags_speed='-O3'
4200         _cflags_size='-Os'
4201     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4202         _type=tms470
4203         _ident=$($_cc -version | head -n1 | tr -s ' ')
4204         _flags='--gcc --abi=eabi -me'
4205         _cc_e='-ppl -fe=$@'
4206         _cc_o='-fe=$@'
4207         _depflags='-ppa -ppd=$(@:.o=.d)'
4208         _cflags_speed='-O3 -mf=5'
4209         _cflags_size='-O3 -mf=2'
4210         _flags_filter=tms470_flags
4211     elif $_cc -v 2>&1 | grep -q clang; then
4212         _type=clang
4213         _ident=$($_cc --version 2>/dev/null | head -n1)
4214         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4215         _cflags_speed='-O3'
4216         _cflags_size='-Oz'
4217     elif $_cc -V 2>&1 | grep -q Sun; then
4218         _type=suncc
4219         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4220         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4221         _DEPFLAGS='-xM1 -xc99'
4222         _ldflags='-std=c99'
4223         _cflags_speed='-O5'
4224         _cflags_size='-O5 -xspace'
4225         _flags_filter=suncc_flags
4226     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4227         _type=pathscale
4228         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4229         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4230         _cflags_speed='-O2'
4231         _cflags_size='-Os'
4232         _flags_filter='filter_out -Wdisabled-optimization'
4233     elif $_cc -v 2>&1 | grep -q Open64; then
4234         _type=open64
4235         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4236         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4237         _cflags_speed='-O2'
4238         _cflags_size='-Os'
4239         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4240     elif $_cc -V 2>&1 | grep -q Portland; then
4241         _type=pgi
4242         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4243         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4244         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4245         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4246         _cflags_noopt="-O"
4247         _flags_filter=pgi_flags
4248     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4249         _type=armasm
4250         _ident=$($_cc | head -n1)
4251         # 4509: "This form of conditional instruction is deprecated"
4252         _flags="-nologo -ignore 4509"
4253         _flags_filter=armasm_flags
4254     elif $_cc 2>&1 | grep -q Intel; then
4255         _type=icl
4256         _ident=$($_cc 2>&1 | head -n1)
4257         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4258         # Not only is O3 broken on 13.x+ but it is slower on all previous
4259         # versions (tested) as well.
4260         _cflags_speed="-O2"
4261         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4262         if $_cc 2>&1 | grep -q Linker; then
4263             _ld_o='-out:$@'
4264         else
4265             _ld_o='-Fe$@'
4266         fi
4267         _cc_o='-Fo$@'
4268         _cc_e='-P'
4269         _flags_filter=icl_flags
4270         _ld_lib='lib%.a'
4271         _ld_path='-libpath:'
4272         # -Qdiag-error to make icl error when seeing certain unknown arguments
4273         _flags='-nologo -Qdiag-error:4044,10157'
4274         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4275         # with MSVC which enables it by default.
4276         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4277         disable stripping
4278     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4279         # lld can emulate multiple different linkers; in ms link.exe mode,
4280         # the -? parameter gives the help output which contains an identifyable
4281         # string, while it gives an error in other modes.
4282         _type=lld-link
4283         # The link.exe mode doesn't have a switch for getting the version,
4284         # but we can force it back to gnu mode and get the version from there.
4285         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4286         _ld_o='-out:$@'
4287         _flags_filter=msvc_flags
4288         _ld_lib='lib%.a'
4289         _ld_path='-libpath:'
4290     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4291         _type=msvc
4292         _ident=$($_cc 2>&1 | head -n1)
4293         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4294         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4295         _cflags_speed="-O2"
4296         _cflags_size="-O1"
4297         _cflags_noopt="-O1"
4298         if $_cc -nologo- 2>&1 | grep -q Linker; then
4299             _ld_o='-out:$@'
4300         else
4301             _ld_o='-Fe$@'
4302         fi
4303         _cc_o='-Fo$@'
4304         _cc_e='-P -Fi$@'
4305         _flags_filter=msvc_flags
4306         _ld_lib='lib%.a'
4307         _ld_path='-libpath:'
4308         _flags='-nologo'
4309         disable stripping
4310     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4311         _type=cparser
4312         _ident=$($_cc --version | head -n1)
4313         _depflags='-MMD'
4314         _cflags_speed='-O4'
4315         _cflags_size='-O2'
4316         _flags_filter=cparser_flags
4317     fi
4318
4319     eval ${pfx}_type=\$_type
4320     eval ${pfx}_ident=\$_ident
4321 }
4322
4323 set_ccvars(){
4324     eval ${1}_C=\${_cc_c-\${${1}_C}}
4325     eval ${1}_E=\${_cc_e-\${${1}_E}}
4326     eval ${1}_O=\${_cc_o-\${${1}_O}}
4327
4328     if [ -n "$_depflags" ]; then
4329         eval ${1}_DEPFLAGS=\$_depflags
4330     else
4331         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4332         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4333         eval DEP${1}FLAGS=\$_flags
4334     fi
4335 }
4336
4337 probe_cc cc "$cc" "true"
4338 cflags_filter=$_flags_filter
4339 cflags_speed=$_cflags_speed
4340 cflags_size=$_cflags_size
4341 cflags_noopt=$_cflags_noopt
4342 add_cflags $_flags $_cflags
4343 cc_ldflags=$_ldflags
4344 set_ccvars CC
4345 set_ccvars CXX
4346
4347 probe_cc hostcc "$host_cc"
4348 host_cflags_filter=$_flags_filter
4349 host_cflags_speed=$_cflags_speed
4350 add_host_cflags  $_flags $_cflags
4351 set_ccvars HOSTCC
4352
4353 test -n "$cc_type" && enable $cc_type ||
4354     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4355
4356 : ${as_default:=$cc}
4357 : ${objcc_default:=$cc}
4358 : ${dep_cc_default:=$cc}
4359 : ${ld_default:=$cc}
4360 : ${host_ld_default:=$host_cc}
4361 set_default ar as objcc dep_cc ld ln_s host_ld windres
4362
4363 probe_cc as "$as"
4364 asflags_filter=$_flags_filter
4365 add_asflags $_flags $_cflags
4366 set_ccvars AS
4367
4368 probe_cc objcc "$objcc"
4369 objcflags_filter=$_flags_filter
4370 add_objcflags $_flags $_cflags
4371 set_ccvars OBJC
4372
4373 probe_cc ld "$ld"
4374 ldflags_filter=$_flags_filter
4375 add_ldflags $_flags $_ldflags
4376 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4377 LD_O=${_ld_o-$LD_O}
4378 LD_LIB=${_ld_lib-$LD_LIB}
4379 LD_PATH=${_ld_path-$LD_PATH}
4380
4381 probe_cc hostld "$host_ld"
4382 host_ldflags_filter=$_flags_filter
4383 add_host_ldflags $_flags $_ldflags
4384 HOSTLD_O=${_ld_o-$HOSTLD_O}
4385
4386 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4387     probe_cc depcc "$dep_cc"
4388     CCDEP=${_DEPCMD:-$DEPCMD}
4389     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4390     DEPCCFLAGS=$_flags
4391 fi
4392
4393 if $ar 2>&1 | grep -q Microsoft; then
4394     arflags="-nologo"
4395     ar_o='-out:$@'
4396 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4397     arflags="rq"
4398     ar_o='$@'
4399 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4400     arflags='-Xany -r -c'
4401     ar_o='$@'
4402 elif $ar 2>&1 | grep -q "\[D\] "; then
4403     arflags="rcD"
4404     ar_o='$@'
4405 else
4406     arflags="rc"
4407     ar_o='$@'
4408 fi
4409
4410 add_cflags $extra_cflags
4411 add_cxxflags $extra_cxxflags
4412 add_objcflags $extra_objcflags
4413 add_asflags $extra_cflags
4414
4415 if test -n "$sysroot"; then
4416     case "$cc_type" in
4417         gcc|llvm_gcc|clang)
4418             add_cppflags --sysroot="$sysroot"
4419             add_ldflags --sysroot="$sysroot"
4420 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4421             add_cppflags -isysroot "$sysroot"
4422             add_ldflags -isysroot "$sysroot"
4423         ;;
4424         tms470)
4425             add_cppflags -I"$sysinclude"
4426             add_ldflags  --sysroot="$sysroot"
4427         ;;
4428     esac
4429 fi
4430
4431 if test "$cpu" = host; then
4432     enabled cross_compile &&
4433         die "--cpu=host makes no sense when cross-compiling."
4434
4435     case "$cc_type" in
4436         gcc|llvm_gcc)
4437             check_native(){
4438                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4439                 sed -n "/cc1.*$1=/{
4440                             s/.*$1=\\([^ ]*\\).*/\\1/
4441                             p
4442                             q
4443                         }" $TMPE
4444             }
4445             cpu=$(check_native -march || check_native -mcpu)
4446         ;;
4447         clang)
4448             check_native(){
4449                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4450                 sed -n "/cc1.*-target-cpu /{
4451                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4452                             p
4453                             q
4454                         }" $TMPE
4455             }
4456             cpu=$(check_native -march)
4457         ;;
4458     esac
4459
4460     test "${cpu:-host}" = host &&
4461         die "--cpu=host not supported with compiler $cc"
4462 fi
4463
4464 # Deal with common $arch aliases
4465 case "$arch" in
4466     aarch64|arm64)
4467         arch="aarch64"
4468     ;;
4469     arm*|iPad*|iPhone*)
4470         arch="arm"
4471     ;;
4472     mips*|IP*)
4473         case "$arch" in
4474         *el)
4475             add_cppflags -EL
4476             add_ldflags -EL
4477         ;;
4478         *eb)
4479             add_cppflags -EB
4480             add_ldflags -EB
4481         ;;
4482         esac
4483         arch="mips"
4484     ;;
4485     parisc*|hppa*)
4486         arch="parisc"
4487     ;;
4488     "Power Macintosh"|ppc*|powerpc*)
4489         arch="ppc"
4490     ;;
4491     s390|s390x)
4492         arch="s390"
4493     ;;
4494     sh4|sh)
4495         arch="sh4"
4496     ;;
4497     sun4*|sparc*)
4498         arch="sparc"
4499     ;;
4500     tilegx|tile-gx)
4501         arch="tilegx"
4502     ;;
4503     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4504         arch="x86"
4505     ;;
4506 esac
4507
4508 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4509 enable $arch
4510
4511 # Add processor-specific flags
4512 if enabled aarch64; then
4513
4514     case $cpu in
4515         armv*)
4516             cpuflags="-march=$cpu"
4517         ;;
4518         *)
4519             cpuflags="-mcpu=$cpu"
4520         ;;
4521     esac
4522
4523 elif enabled alpha; then
4524
4525     cpuflags="-mcpu=$cpu"
4526
4527 elif enabled arm; then
4528
4529     check_arm_arch() {
4530         check_cpp_condition stddef.h \
4531             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4532             $cpuflags
4533     }
4534
4535     probe_arm_arch() {
4536         if   check_arm_arch 4;        then echo armv4
4537         elif check_arm_arch 4T;       then echo armv4t
4538         elif check_arm_arch 5;        then echo armv5
4539         elif check_arm_arch 5E;       then echo armv5e
4540         elif check_arm_arch 5T;       then echo armv5t
4541         elif check_arm_arch 5TE;      then echo armv5te
4542         elif check_arm_arch 5TEJ;     then echo armv5te
4543         elif check_arm_arch 6;        then echo armv6
4544         elif check_arm_arch 6J;       then echo armv6j
4545         elif check_arm_arch 6K;       then echo armv6k
4546         elif check_arm_arch 6Z;       then echo armv6z
4547         elif check_arm_arch 6ZK;      then echo armv6zk
4548         elif check_arm_arch 6T2;      then echo armv6t2
4549         elif check_arm_arch 7;        then echo armv7
4550         elif check_arm_arch 7A  7_A;  then echo armv7-a
4551         elif check_arm_arch 7S;       then echo armv7-a
4552         elif check_arm_arch 7R  7_R;  then echo armv7-r
4553         elif check_arm_arch 7M  7_M;  then echo armv7-m
4554         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4555         elif check_arm_arch 8A  8_A;  then echo armv8-a
4556         fi
4557     }
4558
4559     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4560
4561     case $cpu in
4562         armv*)
4563             cpuflags="-march=$cpu"
4564             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4565         ;;
4566         *)
4567             cpuflags="-mcpu=$cpu"
4568             case $cpu in
4569                 cortex-a*)                               subarch=armv7a  ;;
4570                 cortex-r*)                               subarch=armv7r  ;;
4571                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4572                 arm11*)                                  subarch=armv6   ;;
4573                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4574                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4575                 *)                             subarch=$(probe_arm_arch) ;;
4576             esac
4577         ;;
4578     esac
4579
4580     case "$subarch" in
4581         armv5t*)    enable fast_clz                ;;
4582         armv[6-8]*)
4583             enable fast_clz
4584             disabled fast_unaligned || enable fast_unaligned
4585             ;;
4586     esac
4587
4588 elif enabled avr32; then
4589
4590     case $cpu in
4591         ap7[02]0[0-2])
4592             subarch="avr32_ap"
4593             cpuflags="-mpart=$cpu"
4594         ;;
4595         ap)
4596             subarch="avr32_ap"
4597             cpuflags="-march=$cpu"
4598         ;;
4599         uc3[ab]*)
4600             subarch="avr32_uc"
4601             cpuflags="-mcpu=$cpu"
4602         ;;
4603         uc)
4604             subarch="avr32_uc"
4605             cpuflags="-march=$cpu"
4606         ;;
4607     esac
4608
4609 elif enabled bfin; then
4610
4611     cpuflags="-mcpu=$cpu"
4612
4613 elif enabled mips; then
4614
4615     cpuflags="-march=$cpu"
4616
4617     if [ "$cpu" != "generic" ]; then
4618         disable mips32r2
4619         disable mips32r5
4620         disable mips64r2
4621         disable mips32r6
4622         disable mips64r6
4623         disable loongson2
4624         disable loongson3
4625
4626         case $cpu in
4627             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4628                 enable mips32r2
4629                 disable msa
4630             ;;
4631             p5600|i6400|p6600)
4632                 disable mipsdsp
4633                 disable mipsdspr2
4634             ;;
4635             loongson*)
4636                 enable loongson2
4637                 enable loongson3
4638                 enable local_aligned_8 local_aligned_16 local_aligned_32
4639                 enable simd_align_16
4640                 enable fast_64bit
4641                 enable fast_clz
4642                 enable fast_cmov
4643                 enable fast_unaligned
4644                 disable aligned_stack
4645                 disable mipsfpu
4646                 disable mipsdsp
4647                 disable mipsdspr2
4648                 case $cpu in
4649                     loongson3*)
4650                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4651                     ;;
4652                     loongson2e)
4653                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4654                     ;;
4655                     loongson2f)
4656                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4657                     ;;
4658                 esac
4659             ;;
4660             *)
4661                 # Unknown CPU. Disable everything.
4662                 warn "unknown CPU. Disabling all MIPS optimizations."
4663                 disable mipsfpu
4664                 disable mipsdsp
4665                 disable mipsdspr2
4666                 disable msa
4667                 disable mmi
4668             ;;
4669         esac
4670
4671         case $cpu in
4672             24kc)
4673                 disable mipsfpu
4674                 disable mipsdsp
4675                 disable mipsdspr2
4676             ;;
4677             24kf*)
4678                 disable mipsdsp
4679                 disable mipsdspr2
4680             ;;
4681             24kec|34kc|1004kc)
4682                 disable mipsfpu
4683                 disable mipsdspr2
4684             ;;
4685             24kef*|34kf*|1004kf*)
4686                 disable mipsdspr2
4687             ;;
4688             74kc)
4689                 disable mipsfpu
4690             ;;
4691             p5600)
4692                 enable mips32r5
4693                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4694             ;;
4695             i6400)
4696                 enable mips64r6
4697                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4698             ;;
4699             p6600)
4700                 enable mips64r6
4701                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4702             ;;
4703         esac
4704     else
4705         # We do not disable anything. Is up to the user to disable the unwanted features.
4706         warn 'generic cpu selected'
4707     fi
4708
4709 elif enabled ppc; then
4710
4711     disable ldbrx
4712
4713     case $(tolower $cpu) in
4714         601|ppc601|powerpc601)
4715             cpuflags="-mcpu=601"
4716             disable altivec
4717         ;;
4718         603*|ppc603*|powerpc603*)
4719             cpuflags="-mcpu=603"
4720             disable altivec
4721         ;;
4722         604*|ppc604*|powerpc604*)
4723             cpuflags="-mcpu=604"
4724             disable altivec
4725         ;;
4726         g3|75*|ppc75*|powerpc75*)
4727             cpuflags="-mcpu=750"
4728             disable altivec
4729         ;;
4730         g4|745*|ppc745*|powerpc745*)
4731             cpuflags="-mcpu=7450"
4732             disable vsx
4733         ;;
4734         74*|ppc74*|powerpc74*)
4735             cpuflags="-mcpu=7400"
4736             disable vsx
4737         ;;
4738         g5|970|ppc970|powerpc970)
4739             cpuflags="-mcpu=970"
4740             disable vsx
4741         ;;
4742         power[3-6]*)
4743             cpuflags="-mcpu=$cpu"
4744             disable vsx
4745         ;;
4746         power[7-8]*)
4747             cpuflags="-mcpu=$cpu"
4748         ;;
4749         cell)
4750             cpuflags="-mcpu=cell"
4751             enable ldbrx
4752             disable vsx
4753         ;;
4754         e500mc)
4755             cpuflags="-mcpu=e500mc"
4756             disable altivec
4757         ;;
4758         e500v2)
4759             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4760             disable altivec
4761             disable dcbzl
4762         ;;
4763         e500)
4764             cpuflags="-mcpu=8540 -mhard-float"
4765             disable altivec
4766             disable dcbzl
4767         ;;
4768     esac
4769
4770 elif enabled sparc; then
4771
4772     case $cpu in
4773         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4774             cpuflags="-mcpu=$cpu"
4775         ;;
4776         ultrasparc*|niagara[234])
4777             cpuflags="-mcpu=$cpu"
4778         ;;
4779     esac
4780
4781 elif enabled x86; then
4782
4783     case $cpu in
4784         i[345]86|pentium)
4785             cpuflags="-march=$cpu"
4786             disable i686
4787             disable mmx
4788         ;;
4789         # targets that do NOT support nopl and conditional mov (cmov)
4790         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4791             cpuflags="-march=$cpu"
4792             disable i686
4793         ;;
4794         # targets that do support nopl and conditional mov (cmov)
4795         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4796         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4797         |amdfam10|barcelona|b[dt]ver*|znver*)
4798             cpuflags="-march=$cpu"
4799             enable i686
4800             enable fast_cmov
4801         ;;
4802         # targets that do support conditional mov but on which it's slow
4803         pentium4|pentium4m|prescott|nocona)
4804             cpuflags="-march=$cpu"
4805             enable i686
4806             disable fast_cmov
4807         ;;
4808     esac
4809
4810 fi
4811
4812 if [ "$cpu" != generic ]; then
4813     add_cflags  $cpuflags
4814     add_asflags $cpuflags
4815     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4816 fi
4817
4818 # compiler sanity check
4819 check_exec <<EOF
4820 int main(void){ return 0; }
4821 EOF
4822 if test "$?" != 0; then
4823     echo "$cc is unable to create an executable file."
4824     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4825         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4826         echo "Only do this if you know what cross compiling means."
4827     fi
4828     die "C compiler test failed."
4829 fi
4830
4831 add_cppflags -D_ISOC99_SOURCE
4832 add_cxxflags -D__STDC_CONSTANT_MACROS
4833 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4834
4835 # some compilers silently accept -std=c11, so we also need to check that the
4836 # version macro is defined properly
4837 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4838     add_cflags -std=c11 ||
4839     check_cflags -std=c99
4840
4841 check_cppflags -D_FILE_OFFSET_BITS=64
4842 check_cppflags -D_LARGEFILE_SOURCE
4843
4844 add_host_cppflags -D_ISOC99_SOURCE
4845 check_host_cflags -std=c99
4846 check_host_cflags -Wall
4847 check_host_cflags $host_cflags_speed
4848
4849 check_64bit(){
4850     arch32=$1
4851     arch64=$2
4852     expr=$3
4853     check_code cc "" "int test[2*($expr) - 1]" &&
4854         subarch=$arch64 || subarch=$arch32
4855 }
4856
4857 case "$arch" in
4858     aarch64|alpha|ia64)
4859         spic=$shared
4860     ;;
4861     mips)
4862         check_64bit mips mips64 '_MIPS_SIM > 1'
4863         spic=$shared
4864     ;;
4865     parisc)
4866         check_64bit parisc parisc64 'sizeof(void *) > 4'
4867         spic=$shared
4868     ;;
4869     ppc)
4870         check_64bit ppc ppc64 'sizeof(void *) > 4'
4871         spic=$shared
4872     ;;
4873     s390)
4874         check_64bit s390 s390x 'sizeof(void *) > 4'
4875         spic=$shared
4876     ;;
4877     sparc)
4878         check_64bit sparc sparc64 'sizeof(void *) > 4'
4879         spic=$shared
4880     ;;
4881     x86)
4882         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4883         # Treat x32 as x64 for now. Note it also needs spic=$shared
4884         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4885             subarch=x86_64
4886         if test "$subarch" = "x86_64"; then
4887             spic=$shared
4888         fi
4889     ;;
4890     ppc)
4891         check_cc <<EOF && subarch="ppc64"
4892         int test[(int)sizeof(char*) - 7];
4893 EOF
4894     ;;
4895 esac
4896
4897 enable $subarch
4898 enabled spic && enable_weak pic
4899
4900 enabled x86_64 && objformat=elf64 || objformat="elf32"
4901
4902 # OS specific
4903 case $target_os in
4904     aix)
4905         SHFLAGS=-shared
4906         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4907         enabled shared && add_ldflags -Wl,-brtl
4908         ;;
4909     android)
4910         disable symver
4911         enable section_data_rel_ro
4912         SLIB_INSTALL_NAME='$(SLIBNAME)'
4913         SLIB_INSTALL_LINKS=
4914         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4915         ;;
4916     haiku)
4917         prefix_default="/boot/common"
4918         network_extralibs="-lnetwork"
4919         host_extralibs=
4920         ;;
4921     sunos)
4922         SHFLAGS='-shared -Wl,-h,$$(@F)'
4923         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4924         network_extralibs="-lsocket -lnsl"
4925         add_cppflags -D__EXTENSIONS__
4926         # When using suncc to build, the Solaris linker will mark
4927         # an executable with each instruction set encountered by
4928         # the Solaris assembler.  As our libraries contain their own
4929         # guards for processor-specific code, instead suppress
4930         # generation of the HWCAPS ELF section on Solaris x86 only.
4931         enabled_all suncc x86 &&
4932             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4933             add_ldflags -Wl,-M,mapfile
4934         nm_default='nm -P -g'
4935         version_script='-M'
4936         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4937         ;;
4938     netbsd)
4939         disable symver
4940         oss_indev_extralibs="-lossaudio"
4941         oss_outdev_extralibs="-lossaudio"
4942         enabled gcc || check_ldflags -Wl,-zmuldefs
4943         ;;
4944     openbsd|bitrig)
4945         disable symver
4946         SHFLAGS='-shared'
4947         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4948         SLIB_INSTALL_LINKS=
4949         oss_indev_extralibs="-lossaudio"
4950         oss_outdev_extralibs="-lossaudio"
4951         ;;
4952     dragonfly)
4953         disable symver
4954         ;;
4955     freebsd)
4956         ;;
4957     bsd/os)
4958         add_extralibs -lpoll -lgnugetopt
4959         strip="strip -d"
4960         ;;
4961     darwin)
4962         enabled ppc && add_asflags -force_cpusubtype_ALL
4963         install_name_dir_default='$(SHLIBDIR)'
4964         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4965         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4966         strip="${strip} -x"
4967         add_ldflags -Wl,-dynamic,-search_paths_first
4968         SLIBSUF=".dylib"
4969         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4970         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4971         objformat="macho"
4972         enabled x86_64 && objformat="macho64" || objformat="macho32"
4973         enabled_any pic shared x86_64 ||
4974             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4975         check_header dispatch/dispatch.h &&
4976             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4977         version_script='-exported_symbols_list'
4978         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4979         ;;
4980     msys*)
4981         die "Native MSYS builds are discouraged, please use the MINGW environment."
4982         ;;
4983     mingw32*|mingw64*)
4984         if test $target_os = "mingw32ce"; then
4985             disable network
4986         else
4987             target_os=mingw32
4988         fi
4989         LIBTARGET=i386
4990         if enabled x86_64; then
4991             LIBTARGET="i386:x86-64"
4992         elif enabled arm; then
4993             LIBTARGET=arm-wince
4994         fi
4995         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4996         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4997         shlibdir_default="$bindir_default"
4998         SLIBPREF=""
4999         SLIBSUF=".dll"
5000         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5001         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5002         dlltool="${cross_prefix}dlltool"
5003         if check_cmd lib.exe -list; then
5004             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5005             if enabled x86_64; then
5006                 LIBTARGET=x64
5007             fi
5008         elif check_cmd $dlltool --version; then
5009             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5010         fi
5011         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5012         SLIB_INSTALL_LINKS=
5013         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5014         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5015         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
5016         enabled x86_64 && objformat="win64" || objformat="win32"
5017         ranlib=:
5018         enable dos_paths
5019         check_ldflags -Wl,--nxcompat,--dynamicbase
5020         # Lets work around some stupidity in binutils.
5021         # ld will strip relocations from executables even though we need them
5022         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5023         # however ld then forgets what the entry point should be (oops) so we
5024         # have to manually (re)set it.
5025         if enabled x86_32; then
5026             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5027         elif enabled x86_64; then
5028             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5029             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5030             # Set image base >4GB for extra entropy with HEASLR
5031             add_ldexeflags -Wl,--image-base,0x140000000
5032             append SHFLAGS -Wl,--image-base,0x180000000
5033         fi
5034         ;;
5035     win32|win64)
5036         disable symver
5037         if enabled shared; then
5038             # Link to the import library instead of the normal static library
5039             # for shared libs.
5040             LD_LIB='%.lib'
5041             # Cannot build both shared and static libs with MSVC or icl.
5042             disable static
5043         fi
5044         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5045         shlibdir_default="$bindir_default"
5046         SLIBPREF=""
5047         SLIBSUF=".dll"
5048         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5049         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5050         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5051         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5052         SLIB_INSTALL_LINKS=
5053         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5054         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5055         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5056         enabled x86_64 && objformat="win64" || objformat="win32"
5057         ranlib=:
5058         enable dos_paths
5059         ;;
5060     cygwin*)
5061         target_os=cygwin
5062         shlibdir_default="$bindir_default"
5063         SLIBPREF="cyg"
5064         SLIBSUF=".dll"
5065         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5066         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5067         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5068         SLIB_INSTALL_LINKS=
5069         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5070         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5071         enabled x86_64 && objformat="win64" || objformat="win32"
5072         enable dos_paths
5073         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5074         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5075         ;;
5076     *-dos|freedos|opendos)
5077         network_extralibs="-lsocket"
5078         objformat="coff"
5079         enable dos_paths
5080         add_cppflags -U__STRICT_ANSI__
5081         ;;
5082     linux)
5083         enable section_data_rel_ro
5084         enabled_any arm aarch64 && enable_weak linux_perf
5085         ;;
5086     irix*)
5087         target_os=irix
5088         ranlib="echo ignoring ranlib"
5089         ;;
5090     os/2*)
5091         strip="lxlite -CS"
5092         objformat="aout"
5093         add_cppflags -D_GNU_SOURCE
5094         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5095         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5096         LIBSUF="_s.a"
5097         SLIBPREF=""
5098         SLIBSUF=".dll"
5099         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5100         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5101         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5102             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5103             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5104             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5105             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5106         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5107             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5108         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5109         SLIB_INSTALL_LINKS=
5110         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5111         enable dos_paths
5112         enable_weak os2threads
5113         ;;
5114     gnu/kfreebsd)
5115         add_cppflags -D_BSD_SOURCE
5116         ;;
5117     gnu)
5118         ;;
5119     qnx)
5120         add_cppflags -D_QNX_SOURCE
5121         network_extralibs="-lsocket"
5122         ;;
5123     symbian)
5124         SLIBSUF=".dll"
5125         enable dos_paths
5126         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5127         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5128         add_ldflags -Wl,--target1-abs,--no-undefined \
5129                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5130                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5131         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5132                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5133                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5134         ;;
5135     osf1)
5136         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5137         ;;
5138     minix)
5139         ;;
5140     none)
5141         ;;
5142     *)
5143         die "Unknown OS '$target_os'."
5144         ;;
5145 esac
5146
5147 # test if creating links works
5148 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5149 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5150 mkdir "$link_dest"
5151 $ln_s "$link_dest" "$link_name"
5152 touch "$link_dest/test_file"
5153 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5154     # create link to source path
5155     [ -e src ] && rm src
5156     $ln_s "$source_path" src
5157     source_link=src
5158 else
5159     # creating directory links doesn't work
5160     # fall back to using the full source path
5161     source_link="$source_path"
5162 fi
5163 # cleanup
5164 rm -r "$link_dest"
5165 rm -r "$link_name"
5166
5167 # determine libc flavour
5168
5169 probe_libc(){
5170     pfx=$1
5171     pfx_no_=${pfx%_}
5172     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5173     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5174         eval ${pfx}libc_type=uclibc
5175         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5176     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5177         eval ${pfx}libc_type=glibc
5178         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5179     # MinGW headers can be installed on Cygwin, so check for newlib first.
5180     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5181         eval ${pfx}libc_type=newlib
5182         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5183     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5184     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5185         eval ${pfx}libc_type=mingw64
5186         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5187             add_compat msvcrt/snprintf.o
5188             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5189         fi
5190         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5191         eval test \$${pfx_no_}cc_type = "gcc" &&
5192             add_${pfx}cppflags -D__printf__=__gnu_printf__
5193     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5194          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5195         eval ${pfx}libc_type=mingw32
5196         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5197             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5198             die "ERROR: MinGW32 runtime version must be >= 3.15."
5199         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5200         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5201             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5202         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5203             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5204         eval test \$${pfx_no_}cc_type = "gcc" &&
5205             add_${pfx}cppflags -D__printf__=__gnu_printf__
5206     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5207         eval ${pfx}libc_type=msvcrt
5208         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5209             if [ "$pfx" = host_ ]; then
5210                 add_host_cppflags -Dsnprintf=_snprintf
5211             else
5212                 add_compat strtod.o strtod=avpriv_strtod
5213                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5214                                              _snprintf=avpriv_snprintf  \
5215                                              vsnprintf=avpriv_vsnprintf
5216             fi
5217         fi
5218         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5219         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5220         # 0x601 by default unless something else is set by the user.
5221         # This can easily lead to us detecting functions only present
5222         # in such new versions and producing binaries requiring windows 7.0.
5223         # Therefore explicitly set the default to XP unless the user has
5224         # set something else on the command line.
5225         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5226         # family. For these cases, configure is free to use any functions
5227         # found in the SDK headers by default. (Alternatively, we could force
5228         # _WIN32_WINNT to 0x0602 in that case.)
5229         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5230             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5231 #ifdef WINAPI_FAMILY
5232 #include <winapifamily.h>
5233 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5234 #error not desktop
5235 #endif
5236 #endif
5237 EOF
5238         if [ "$pfx" = "" ]; then
5239             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5240             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5241         fi
5242     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5243         eval ${pfx}libc_type=klibc
5244     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5245         eval ${pfx}libc_type=bionic
5246     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5247         eval ${pfx}libc_type=solaris
5248         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5249     fi
5250     check_${pfx}cc <<EOF
5251 #include <time.h>
5252 void *v = localtime_r;
5253 EOF
5254 test "$?" != 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
5255 #include <time.h>
5256 void *v = localtime_r;
5257 EOF
5258
5259 }
5260
5261 probe_libc
5262 test -n "$libc_type" && enable libc_$libc_type
5263 probe_libc host_
5264 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5265
5266 # hacks for compiler/libc/os combinations
5267
5268 case $libc_type in
5269     bionic)
5270         add_compat strtod.o strtod=avpriv_strtod
5271         ;;
5272     glibc)
5273         if enabled tms470; then
5274             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5275             add_cppflags -D__USER_LABEL_PREFIX__=
5276             add_cppflags -D__builtin_memset=memset
5277             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5278             add_cflags   -pds=48    # incompatible redefinition of macro
5279         elif enabled ccc; then
5280             add_ldflags -Wl,-z,now  # calls to libots crash without this
5281         fi
5282         ;;
5283 esac
5284
5285 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5286     add_cppflags '-I\$(SRC_PATH)/compat/float'
5287
5288 esc(){
5289     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5290 }
5291
5292 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5293
5294 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5295
5296 set_default libdir
5297 : ${shlibdir_default:="$libdir"}
5298 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5299
5300 set_default $PATHS_LIST
5301 set_default nm
5302
5303 # we need to build at least one lib type
5304 if ! enabled_any static shared; then
5305     cat <<EOF
5306 At least one library type must be built.
5307 Specify --enable-static to build the static libraries or --enable-shared to
5308 build the shared libraries as well. To only build the shared libraries specify
5309 --disable-static in addition to --enable-shared.
5310 EOF
5311     exit 1
5312 fi
5313
5314 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5315
5316 enable_weak_pic() {
5317     disabled pic && return
5318     enable pic
5319     add_cppflags -DPIC
5320     case "$target_os" in
5321     mingw*|cygwin*)
5322         ;;
5323     *)
5324         add_cflags -fPIC
5325         ;;
5326     esac
5327     add_asflags  -fPIC
5328 }
5329
5330 enabled pic && enable_weak_pic
5331
5332 check_cc <<EOF || die "Symbol mangling check failed."
5333 int ff_extern;
5334 EOF
5335 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5336 extern_prefix=${sym%%ff_extern*}
5337
5338 check_inline_asm inline_asm '"" ::'
5339
5340 _restrict=
5341 for restrict_keyword in restrict __restrict__ __restrict; do
5342     check_cc <<EOF && _restrict=$restrict_keyword && break
5343 void foo(char * $restrict_keyword p);
5344 EOF
5345 done
5346
5347 check_cc <<EOF && enable pragma_deprecated
5348 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5349 EOF
5350
5351 check_cc <<EOF && enable attribute_packed
5352 struct { int x; } __attribute__((packed)) x;
5353 EOF
5354
5355 check_cc <<EOF && enable attribute_may_alias
5356 union { int x; } __attribute__((may_alias)) x;
5357 EOF
5358
5359 check_cc <<EOF || die "endian test failed"
5360 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5361 EOF
5362 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5363
5364 check_cc <<EOF && enable const_nan
5365 #include <math.h>
5366 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5367 EOF
5368
5369 if ! enabled ppc64 || enabled bigendian; then
5370     disable vsx
5371 fi
5372
5373 check_gas() {
5374     log "check_gas using '$as' as AS"
5375     # :vararg is used on aarch64, arm and ppc altivec
5376     check_as <<EOF || return 1
5377 .macro m n, y:vararg=0
5378 \n: .int \y
5379 .endm
5380 m x
5381 EOF
5382     # .altmacro is only used in arm asm
5383     ! enabled arm || check_as <<EOF || return 1
5384 .altmacro
5385 EOF
5386     enable gnu_as
5387     return 0
5388 }
5389
5390 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5391     nogas=:
5392     enabled_any arm aarch64 && nogas=die
5393     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5394     as_noop=-v
5395
5396     case $as_type in
5397         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5398         gcc)  gaspp_as_type=gas ;;
5399         *)    gaspp_as_type=$as_type ;;
5400     esac
5401
5402     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5403
5404     test "${as#*gas-preprocessor.pl}" != "$as" ||
5405     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5406         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5407
5408     if ! check_gas ; then
5409         as=${gas:=$as}
5410         check_gas || \
5411             $nogas "GNU assembler not found, install/update gas-preprocessor"
5412     fi
5413
5414     check_as <<EOF && enable as_func
5415 .func test
5416 .endfunc
5417 EOF
5418 fi
5419
5420 check_inline_asm inline_asm_labels '"1:\n"'
5421
5422 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5423
5424 if enabled aarch64; then
5425     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5426     # internal assembler in clang 3.3 does not support this instruction
5427     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5428     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5429
5430     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5431
5432 elif enabled alpha; then
5433
5434     check_cflags -mieee
5435
5436 elif enabled arm; then
5437
5438     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5439
5440     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5441 float func(float a, float b){ return a+b; }
5442 EOF
5443
5444     enabled thumb && check_cflags -mthumb || check_cflags -marm
5445
5446     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5447         enable vfp_args
5448     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5449         enable vfp_args
5450     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5451         case "${cross_prefix:-$cc}" in
5452             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5453             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5454 __asm__ (".eabi_attribute 28, 1");
5455 int main(void) { return 0; }
5456 EOF
5457         esac
5458         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5459     fi
5460
5461     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5462     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5463     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5464     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5465     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5466     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5467     enabled setend  && check_insn setend  'setend be'
5468
5469     [ $target_os = linux ] || [ $target_os = android ] ||
5470         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5471             $ARCH_EXT_LIST_ARM
5472
5473     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5474
5475     check_as <<EOF && enable as_dn_directive
5476 ra .dn d0.i16
5477 .unreq ra
5478 EOF
5479     check_as <<EOF && enable as_fpu_directive
5480 .fpu neon
5481 EOF
5482
5483     # llvm's integrated assembler supports .object_arch from llvm 3.5
5484     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5485         check_as <<EOF && enable as_object_arch
5486 .object_arch armv4
5487 EOF
5488
5489     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5490
5491 elif enabled mips; then
5492
5493     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5494     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5495     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5496
5497     # Enable minimum ISA based on selected options
5498     if enabled mips64; then
5499         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5500         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5501         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5502     else
5503         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5504         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5505         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5506         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5507     fi
5508
5509     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5510     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5511     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5512     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5513     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5514
5515     if enabled bigendian && enabled msa; then
5516         disable msa
5517     fi
5518
5519 elif enabled parisc; then
5520
5521     if enabled gcc; then
5522         case $($cc -dumpversion) in
5523             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5524         esac
5525     fi
5526
5527 elif enabled ppc; then
5528
5529     enable local_aligned_8 local_aligned_16 local_aligned_32
5530
5531     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5532     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5533     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5534     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5535
5536     # AltiVec flags: The FSF version of GCC differs from the Apple version
5537     if enabled altivec; then
5538         check_cflags -maltivec -mabi=altivec &&
5539         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5540         check_cflags -faltivec
5541
5542         # check if our compiler supports Motorola AltiVec C API
5543         check_cc <<EOF || disable altivec
5544 $inc_altivec_h
5545 int main(void) {
5546     vector signed int v1 = (vector signed int) { 0 };
5547     vector signed int v2 = (vector signed int) { 1 };
5548     v1 = vec_add(v1, v2);
5549     return 0;
5550 }
5551 EOF
5552
5553         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5554     fi
5555
5556     if enabled vsx; then
5557         check_cflags -mvsx &&
5558         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5559     fi
5560
5561     if enabled power8; then
5562         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5563     fi
5564
5565 elif enabled x86; then
5566
5567     check_builtin rdtsc    intrin.h   "__rdtsc()"
5568     check_builtin mm_empty mmintrin.h "_mm_empty()"
5569
5570     enable local_aligned_8 local_aligned_16 local_aligned_32
5571
5572     # check whether EBP is available on x86
5573     # As 'i' is stored on the stack, this program will crash
5574     # if the base pointer is used to access it because the
5575     # base pointer is cleared in the inline assembly code.
5576     check_exec_crash <<EOF && enable ebp_available
5577 volatile int i=0;
5578 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5579 return i;
5580 EOF
5581
5582     # check whether EBX is available on x86
5583     check_inline_asm ebx_available '""::"b"(0)' &&
5584         check_inline_asm ebx_available '"":::"%ebx"'
5585
5586     # check whether xmm clobbers are supported
5587     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5588
5589     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5590         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5591
5592     # check whether binutils is new enough to compile SSSE3/MMXEXT
5593     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5594     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5595
5596     probe_x86asm(){
5597         x86asmexe_probe=$1
5598         if check_cmd $x86asmexe_probe -v; then
5599             x86asmexe=$x86asmexe_probe
5600             x86asm_type=nasm
5601             x86asm_debug="-g -F dwarf"
5602         elif check_cmd $x86asmexe_probe --version; then
5603             x86asmexe=$x86asmexe_probe
5604             x86asm_type=yasm
5605             x86asm_debug="-g dwarf2"
5606         fi
5607         check_x86asm "movbe ecx, [5]" && enable x86asm
5608     }
5609
5610     if ! disabled_any asm mmx x86asm; then
5611         disable x86asm
5612         for program in $x86asmexe nasm yasm; do
5613             probe_x86asm $program && break
5614         done
5615         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5616         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5617         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5618         X86ASMFLAGS="-f $objformat"
5619         enabled pic               && append X86ASMFLAGS "-DPIC"
5620         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5621         case "$objformat" in
5622             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5623         esac
5624
5625         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5626         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5627         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5628         check_x86asm "CPU amdnop" || disable cpunop
5629     fi
5630
5631     case "$cpu" in
5632         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5633             disable fast_clz
5634         ;;
5635     esac
5636
5637 fi
5638
5639 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5640
5641 check_ldflags -Wl,--as-needed
5642 check_ldflags -Wl,-z,noexecstack
5643
5644 if ! disabled network; then
5645     check_func getaddrinfo $network_extralibs
5646     check_func inet_aton $network_extralibs
5647
5648     check_type netdb.h "struct addrinfo"
5649     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5650     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5651     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5652     check_type poll.h "struct pollfd"
5653     check_type netinet/sctp.h "struct sctp_event_subscribe"
5654     check_struct "sys/socket.h" "struct msghdr" msg_flags
5655     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5656     check_type netinet/in.h "struct sockaddr_in6"
5657     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5658     check_type "sys/types.h sys/socket.h" socklen_t
5659
5660     # Prefer arpa/inet.h over winsock2
5661     if check_header arpa/inet.h ; then
5662         check_func closesocket
5663     elif check_header winsock2.h ; then
5664         check_func_headers winsock2.h closesocket -lws2 &&
5665             network_extralibs="-lws2" ||
5666         { check_func_headers winsock2.h closesocket -lws2_32 &&
5667             network_extralibs="-lws2_32"; } || disable winsock2_h network
5668         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5669
5670         check_type ws2tcpip.h socklen_t
5671         check_type ws2tcpip.h "struct addrinfo"
5672         check_type ws2tcpip.h "struct group_source_req"
5673         check_type ws2tcpip.h "struct ip_mreq_source"
5674         check_type ws2tcpip.h "struct ipv6_mreq"
5675         check_type winsock2.h "struct pollfd"
5676         check_struct winsock2.h "struct sockaddr" sa_len
5677         check_type ws2tcpip.h "struct sockaddr_in6"
5678         check_type ws2tcpip.h "struct sockaddr_storage"
5679     else
5680         disable network
5681     fi
5682 fi
5683
5684 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5685 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5686 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5687 check_builtin sarestart signal.h "SA_RESTART"
5688 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5689 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5690 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5691 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5692 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5693
5694 case "$custom_allocator" in
5695     jemalloc)
5696         # jemalloc by default does not use a prefix
5697         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5698     ;;
5699     tcmalloc)
5700         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5701         malloc_prefix=tc_
5702     ;;
5703 esac
5704
5705 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5706 check_func  ${malloc_prefix}memalign            && enable memalign
5707 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5708
5709 check_func  access
5710 check_func_headers stdlib.h arc4random
5711 check_func_headers time.h clock_gettime ||
5712     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5713 check_func  fcntl
5714 check_func  fork
5715 check_func  gethrtime
5716 check_func  getopt
5717 check_func  getrusage
5718 check_func  gettimeofday
5719 check_func  isatty
5720 check_func  mach_absolute_time
5721 check_func  mkstemp
5722 check_func  mmap
5723 check_func  mprotect
5724 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5725 check_func_headers time.h nanosleep ||
5726     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5727 check_func  sched_getaffinity
5728 check_func  setrlimit
5729 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5730 check_func  strerror_r
5731 check_func  sysconf
5732 check_func  sysctl
5733 check_func  usleep
5734
5735 check_func_headers conio.h kbhit
5736 check_func_headers io.h setmode
5737 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5738 check_func_headers stdlib.h getenv
5739 check_func_headers sys/stat.h lstat
5740
5741 check_func_headers windows.h GetProcessAffinityMask
5742 check_func_headers windows.h GetProcessTimes
5743 check_func_headers windows.h GetSystemTimeAsFileTime
5744 check_func_headers windows.h LoadLibrary
5745 check_func_headers windows.h MapViewOfFile
5746 check_func_headers windows.h PeekNamedPipe
5747 check_func_headers windows.h SetConsoleTextAttribute
5748 check_func_headers windows.h SetConsoleCtrlHandler
5749 check_func_headers windows.h Sleep
5750 check_func_headers windows.h VirtualAlloc
5751 check_struct windows.h "CONDITION_VARIABLE" Ptr
5752 check_func_headers glob.h glob
5753 enabled xlib &&
5754     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5755
5756 check_header d3d11.h
5757 check_header direct.h
5758 check_header dirent.h
5759 check_header dlfcn.h
5760 check_header dxgidebug.h
5761 check_header dxva.h
5762 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5763 check_header io.h
5764 check_header libcrystalhd/libcrystalhd_if.h
5765 check_header mach/mach_time.h
5766 check_header malloc.h
5767 check_header net/udplite.h
5768 check_header poll.h
5769 check_header sys/mman.h
5770 check_header sys/param.h
5771 check_header sys/resource.h
5772 check_header sys/select.h
5773 check_header sys/time.h
5774 check_header sys/un.h
5775 check_header termios.h
5776 check_header unistd.h
5777 check_header valgrind/valgrind.h
5778 check_header VideoDecodeAcceleration/VDADecoder.h
5779 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5780 check_header windows.h
5781 check_header X11/extensions/XvMClib.h
5782 check_header asm/types.h
5783
5784 # it seems there are versions of clang in some distros that try to use the
5785 # gcc headers, which explodes for stdatomic
5786 # so we also check that atomics actually work here
5787 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5788
5789 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5790 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5791 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5792 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5793
5794 enabled appkit       && check_apple_framework AppKit
5795 enabled audiotoolbox && check_apple_framework AudioToolbox
5796 enabled avfoundation && check_apple_framework AVFoundation
5797 enabled coreimage    && check_apple_framework CoreImage
5798 enabled videotoolbox && check_apple_framework VideoToolbox
5799
5800 enabled avfoundation && {
5801     check_lib avfoundation CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5802     check_lib avfoundation ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5803
5804 enabled videotoolbox && {
5805     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5806     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5807 }
5808
5809 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5810
5811 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5812 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5813 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5814 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5815 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5816
5817 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5818 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5819 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5820 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5821 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5822 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5823 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5824 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5825 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5826
5827 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5828
5829 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5830
5831 if ! disabled w32threads && ! enabled pthreads; then
5832     check_func_headers "windows.h process.h" _beginthreadex &&
5833         enable w32threads || disable w32threads
5834     if ! enabled w32threads && enabled winrt; then
5835         check_func_headers "windows.h" CreateThread &&
5836             enable w32threads || disable w32threads
5837     fi
5838 fi
5839
5840 # check for some common methods of building with pthread support
5841 # do this before the optional library checks as some of them require pthreads
5842 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5843     if check_lib pthreads pthread.h pthread_join   -pthread &&
5844        check_lib pthreads pthread.h pthread_create -pthread; then
5845         add_cflags -pthread
5846     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5847          check_lib pthreads pthread.h pthread_create -pthreads; then
5848         add_cflags -pthreads
5849     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5850          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5851         add_cflags -ldl -pthread
5852     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5853          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5854         :
5855     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5856          check_lib pthreads pthread.h pthread_create -lpthread; then
5857         :
5858     elif check_func pthread_join && check_func pthread_create; then
5859         enable pthreads
5860     fi
5861     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5862 fi
5863
5864
5865 if enabled pthreads; then
5866   check_func pthread_cancel
5867 fi
5868
5869 enabled pthreads &&
5870     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5871
5872 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5873 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5874 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5875
5876 # On some systems dynamic loading requires no extra linker flags
5877 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5878
5879 check_lib libm math.h sin -lm && LIBM="-lm"
5880
5881 atan2f_args=2
5882 copysign_args=2
5883 hypot_args=2
5884 ldexpf_args=2
5885 powf_args=2
5886
5887 for func in $MATH_FUNCS; do
5888     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5889 done
5890
5891 for func in $COMPLEX_FUNCS; do
5892     eval check_complexfunc $func \${${func}_args:-1}
5893 done
5894
5895 # these are off by default, so fail if requested and not available
5896 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5897 enabled cuvid             && { enabled cuda ||
5898                                die "ERROR: CUVID requires CUDA"; }
5899 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5900 enabled decklink          && { require_header DeckLinkAPI.h &&
5901                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5902 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5903 enabled frei0r            && require_header frei0r.h
5904 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5905 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5906 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5907 enabled ladspa            && require_header ladspa.h
5908 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5909 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5910 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5911 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5912 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5913                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5914                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5915 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5916 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5917 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5918 enabled libfdk_aac        && { use_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5919                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5920                                  warn "using libfdk without pkg-config"; } }
5921 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"
5922 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5923 enabled fontconfig        && enable libfontconfig
5924 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5925 enabled libfreetype       && require_pkg_config libfreetype2 freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5926 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5927 enabled libgme            && { use_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5928                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5929 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5930                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5931                                done || die "ERROR: libgsm not found"; }
5932 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5933 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5934 # While it may appear that require is being used as a pkg-config
5935 # fallback for libmfx, it is actually being used to detect a different
5936 # installation route altogether.  If libmfx is installed via the Intel
5937 # Media SDK or Intel Media Server Studio, these don't come with
5938 # pkg-config support.  Instead, users should make sure that the build
5939 # can find the libraries and headers through other means.
5940 enabled libmfx            && { use_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5941                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5942 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5943 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5944 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa
5945 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5946                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5947                                die "ERROR: libnpp not found"; }
5948 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5949 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5950 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5951                                { use_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5952                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5953                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5954 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5955 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.3/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5956                                check_lib libopenjpeg openjpeg-2.3/openjpeg.h opj_version -lopenjp2 ||
5957                                { check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5958                                check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 ||
5959                                { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5960                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5961                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5962                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5963                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5964                                die "ERROR: libopenjpeg not found"; }
5965 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5966 enabled libopus           && {
5967     enabled libopus_decoder && {
5968         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5969     }
5970     enabled libopus_encoder && {
5971         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5972     }
5973 }
5974 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5975 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5976 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5977 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5978 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5979 enabled libsmbclient      && { use_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5980                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5981 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5982 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5983 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5984 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
5985 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5986 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5987 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5988                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5989                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5990 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5991 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5992 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5993 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5994 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5995                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5996
5997 enabled libvpx            && {
5998     enabled libvpx_vp8_decoder && {
5999         use_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6000             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
6001                 die "ERROR: libvpx decoder version must be >=0.9.1";
6002     }
6003     enabled libvpx_vp8_encoder && {
6004         use_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6005             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
6006                 die "ERROR: libvpx encoder version must be >=0.9.7";
6007     }
6008     enabled libvpx_vp9_decoder && {
6009         use_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6010             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
6011     }
6012     enabled libvpx_vp9_encoder && {
6013         use_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6014             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6015     }
6016     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6017         die "libvpx enabled but no supported decoders found"
6018     fi
6019 }
6020
6021 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6022 enabled libwebp           && {
6023     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6024     enabled libwebp_anim_encoder && use_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6025 enabled libx264           && { use_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6026                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6027                                  warn "using libx264 without pkg-config"; } } &&
6028                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6029                              { check_cpp_condition x264.h "X264_MPEG2" &&
6030                                enable libx262; }
6031 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6032                              require_cpp_condition x265.h "X265_BUILD >= 68"
6033 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
6034 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6035 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
6036 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6037 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
6038                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6039                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6040 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6041 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6042 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6043                                { ! enabled cross_compile &&
6044                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6045                                  add_ldflags -L/opt/vc/lib/ &&
6046                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6047                                die "ERROR: mmal not found" &&
6048                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6049 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6050                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6051                                die "ERROR: openal not found"; } &&
6052                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6053                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6054 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6055                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6056                                die "ERROR: opencl not found"; } &&
6057                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6058                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6059                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6060 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6061                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6062                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6063                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6064                                die "ERROR: opengl not found."
6065                              }
6066 enabled omx_rpi           && { check_header OMX_Core.h ||
6067                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6068                                die "ERROR: OpenMAX IL headers not found"; }
6069 enabled omx               && require_header OMX_Core.h
6070 enabled openssl           && { use_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6071                                use_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6072                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6073                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6074                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6075                                die "ERROR: openssl not found"; }
6076 enabled rkmpp             && { { require_pkg_config rockchip_mpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
6077                                  die "ERROR : Rockchip MPP was not found."; } &&
6078                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
6079                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
6080                                { enabled libdrm ||
6081                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6082                              }
6083
6084 if enabled gcrypt; then
6085     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6086     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6087         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6088         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6089         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6090             die "ERROR: gcrypt not found"
6091         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
6092     else
6093         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6094     fi
6095 fi
6096
6097 if enabled sdl2; then
6098     SDL2_CONFIG="${cross_prefix}sdl2-config"
6099     if check_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6100         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6101             disable sdl2
6102     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6103         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6104         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6105         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6106         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6107         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6108             enable sdl2
6109     fi
6110     if test $target_os = "mingw32"; then
6111         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6112     fi
6113 fi
6114 enabled sdl2 && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags) && add_extralibs $sdl2_extralibs
6115
6116 if enabled decklink; then
6117     case $target_os in
6118         mingw32*|mingw64*|win32|win64)
6119             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6120             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6121             ;;
6122     esac
6123 fi
6124
6125 enabled securetransport &&
6126     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6127     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6128         disable securetransport
6129
6130 enabled schannel &&
6131     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6132     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6133     add_extralibs -lsecur32 ||
6134         disable schannel
6135
6136 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6137 enabled makeinfo \
6138     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6139     && enable makeinfo_html || disable makeinfo_html
6140 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6141 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6142 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6143 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6144
6145 # check V4L2 codecs available in the API
6146 check_header linux/fb.h
6147 check_header linux/videodev2.h
6148 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6149 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6150 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6151 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6152 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6153 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6154 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6155 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6156 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6157 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6158 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6159
6160 check_header sys/videoio.h
6161 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6162
6163 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6164 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6165 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6166 # w32api 3.12 had it defined wrong
6167 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6168
6169 check_type "dshow.h" IBaseFilter
6170
6171 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6172 { check_header dev/bktr/ioctl_meteor.h &&
6173   check_header dev/bktr/ioctl_bt848.h; } ||
6174 { check_header machine/ioctl_meteor.h &&
6175   check_header machine/ioctl_bt848.h; } ||
6176 { check_header dev/video/meteor/ioctl_meteor.h &&
6177   check_header dev/video/bktr/ioctl_bt848.h; } ||
6178 check_header dev/ic/bt8xx.h
6179
6180 if check_struct sys/soundcard.h audio_buf_info bytes; then
6181     enable_safe sys/soundcard.h
6182 else
6183     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6184     #include <sys/soundcard.h>
6185     audio_buf_info abc;
6186 EOF
6187 fi
6188 check_header soundcard.h
6189
6190 enabled alsa && check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6191
6192 enabled jack && check_lib jack jack/jack.h jack_client_open -ljack &&
6193     check_func jack_port_get_latency_range -ljack
6194
6195 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6196
6197 if enabled libcdio; then
6198     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6199     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6200     die "ERROR: No usable libcdio/cdparanoia found"
6201 fi
6202
6203 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6204     disable libxcb_shm libxcb_shape libxcb_xfixes
6205
6206 if enabled libxcb; then
6207     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6208     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6209     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6210
6211     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6212     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6213 fi
6214
6215 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6216
6217 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6218 # the desktop api partition
6219 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6220 #ifdef WINAPI_FAMILY
6221 #include <winapifamily.h>
6222 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6223 #error desktop, not uwp
6224 #else
6225 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6226 #endif
6227 #else
6228 #error no family set
6229 #endif
6230 EOF
6231
6232 enabled vaapi &&
6233     check_lib vaapi va/va.h vaInitialize -lva
6234
6235 enabled vaapi &&
6236     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6237     disable vaapi
6238
6239 enabled vaapi &&
6240     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6241
6242 enabled vaapi &&
6243     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6244
6245 enabled vaapi &&
6246     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6247     enable vaapi_1
6248
6249 enabled vdpau &&
6250     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6251     disable vdpau
6252
6253 enabled vdpau &&
6254     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6255
6256 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6257
6258 if enabled x86; then
6259     case $target_os in
6260         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6261             ;;
6262         *)
6263             disable cuda cuvid nvenc
6264             ;;
6265     esac
6266 else
6267     disable cuda cuvid nvenc
6268 fi
6269
6270 enabled nvenc &&
6271     check_cc -I$source_path <<EOF || disable nvenc
6272 #include "compat/nvenc/nvEncodeAPI.h"
6273 NV_ENCODE_API_FUNCTION_LIST flist;
6274 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6275 int main(void) { return 0; }
6276 EOF
6277
6278 # Funny iconv installations are not unusual, so check it after all flags have been set
6279 if enabled libc_iconv; then
6280     check_func_headers iconv.h iconv
6281 elif enabled iconv; then
6282     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6283 fi
6284
6285 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6286
6287 # add some useful compiler flags if supported
6288 check_cflags -Wdeclaration-after-statement
6289 check_cflags -Wall
6290 check_cflags -Wdisabled-optimization
6291 check_cflags -Wpointer-arith
6292 check_cflags -Wredundant-decls
6293 check_cflags -Wwrite-strings
6294 check_cflags -Wtype-limits
6295 check_cflags -Wundef
6296 check_cflags -Wmissing-prototypes
6297 check_cflags -Wno-pointer-to-int-cast
6298 check_cflags -Wstrict-prototypes
6299 check_cflags -Wempty-body
6300
6301 if enabled extra_warnings; then
6302     check_cflags -Wcast-qual
6303     check_cflags -Wextra
6304     check_cflags -Wpedantic
6305 fi
6306
6307 check_disable_warning(){
6308     warning_flag=-W${1#-Wno-}
6309     test_cflags $warning_flag && add_cflags $1
6310 }
6311
6312 check_disable_warning -Wno-parentheses
6313 check_disable_warning -Wno-switch
6314 check_disable_warning -Wno-format-zero-length
6315 check_disable_warning -Wno-pointer-sign
6316 check_disable_warning -Wno-unused-const-variable
6317 check_disable_warning -Wno-bool-operation
6318
6319 check_disable_warning_headers(){
6320     warning_flag=-W${1#-Wno-}
6321     test_cflags $warning_flag && add_cflags_headers $1
6322 }
6323
6324 check_disable_warning_headers -Wno-deprecated-declarations
6325 check_disable_warning_headers -Wno-unused-variable
6326
6327 check_cc <<EOF && enable blocks_extension
6328 void (^block)(void);
6329 EOF
6330
6331 # add some linker flags
6332 check_ldflags -Wl,--warn-common
6333 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6334 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6335 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6336 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6337
6338 # add some strip flags
6339 check_stripflags -x
6340
6341 enabled neon_clobber_test &&
6342     check_ldflags -Wl,--wrap,avcodec_open2              \
6343                   -Wl,--wrap,avcodec_decode_audio4      \
6344                   -Wl,--wrap,avcodec_decode_video2      \
6345                   -Wl,--wrap,avcodec_decode_subtitle2   \
6346                   -Wl,--wrap,avcodec_encode_audio2      \
6347                   -Wl,--wrap,avcodec_encode_video2      \
6348                   -Wl,--wrap,avcodec_encode_subtitle    \
6349                   -Wl,--wrap,avcodec_send_packet        \
6350                   -Wl,--wrap,avcodec_receive_packet     \
6351                   -Wl,--wrap,avcodec_send_frame         \
6352                   -Wl,--wrap,avcodec_receive_frame      \
6353                   -Wl,--wrap,swr_convert                \
6354                   -Wl,--wrap,avresample_convert ||
6355     disable neon_clobber_test
6356
6357 enabled xmm_clobber_test &&
6358     check_ldflags -Wl,--wrap,avcodec_open2              \
6359                   -Wl,--wrap,avcodec_decode_audio4      \
6360                   -Wl,--wrap,avcodec_decode_video2      \
6361                   -Wl,--wrap,avcodec_decode_subtitle2   \
6362                   -Wl,--wrap,avcodec_encode_audio2      \
6363                   -Wl,--wrap,avcodec_encode_video2      \
6364                   -Wl,--wrap,avcodec_encode_subtitle    \
6365                   -Wl,--wrap,avcodec_send_packet        \
6366                   -Wl,--wrap,avcodec_receive_packet     \
6367                   -Wl,--wrap,avcodec_send_frame         \
6368                   -Wl,--wrap,avcodec_receive_frame      \
6369                   -Wl,--wrap,swr_convert                \
6370                   -Wl,--wrap,avresample_convert         \
6371                   -Wl,--wrap,sws_scale ||
6372     disable xmm_clobber_test
6373
6374 check_ld "cc" <<EOF && enable proper_dce
6375 extern const int array[512];
6376 static inline int func(void) { return array[0]; }
6377 int main(void) { return 0; }
6378 EOF
6379
6380 if enabled proper_dce; then
6381     echo "X { local: *; };" > $TMPV
6382     if test_ldflags -Wl,${version_script},$TMPV; then
6383         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6384         check_cc <<EOF && enable symver_asm_label
6385 void ff_foo(void) __asm__ ("av_foo@VERSION");
6386 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6387 EOF
6388         check_cc <<EOF && enable symver_gnu_asm
6389 __asm__(".symver ff_foo,av_foo@VERSION");
6390 void ff_foo(void) {}
6391 EOF
6392     fi
6393 fi
6394
6395 if [ -z "$optflags" ]; then
6396     if enabled small; then
6397         optflags=$cflags_size
6398     elif enabled optimizations; then
6399         optflags=$cflags_speed
6400     else
6401         optflags=$cflags_noopt
6402     fi
6403 fi
6404
6405 if [ -z "$nvccflags" ]; then
6406     nvccflags=$nvccflags_default
6407 fi
6408
6409 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6410     nvccflags="$nvccflags -m64"
6411 else
6412     nvccflags="$nvccflags -m32"
6413 fi
6414
6415 check_optflags(){
6416     check_cflags "$@"
6417     enabled lto && check_ldflags "$@"
6418 }
6419
6420 check_optflags $optflags
6421 check_optflags -fno-math-errno
6422 check_optflags -fno-signed-zeros
6423
6424 if enabled lto; then
6425     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6426     check_cflags  -flto
6427     check_ldflags -flto $cpuflags
6428     disable inline_asm_direct_symbol_refs
6429 fi
6430
6431 enabled ftrapv && check_cflags -ftrapv
6432
6433 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6434 int x;
6435 EOF
6436
6437
6438 if enabled icc; then
6439     # Just warnings, no remarks
6440     check_cflags -w1
6441     # -wd: Disable following warnings
6442     # 144, 167, 556: -Wno-pointer-sign
6443     # 188: enumerated type mixed with another type
6444     # 1292: attribute "foo" ignored
6445     # 1419: external declaration in primary source file
6446     # 10006: ignoring unknown option -fno-signed-zeros
6447     # 10148: ignoring unknown option -Wno-parentheses
6448     # 10156: ignoring option '-W'; no argument required
6449     # 13200: No EMMS instruction before call to function
6450     # 13203: No EMMS instruction before return from function
6451     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6452     # 11030: Warning unknown option --as-needed
6453     # 10156: ignoring option '-export'; no argument required
6454     check_ldflags -wd10156,11030
6455     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6456     enable ebp_available
6457     # The test above does not test linking
6458     enabled lto && disable symver_asm_label
6459     if enabled x86_32; then
6460         icc_version=$($cc -dumpversion)
6461         test ${icc_version%%.*} -ge 11 &&
6462             check_cflags -falign-stack=maintain-16-byte ||
6463             disable aligned_stack
6464     fi
6465 elif enabled ccc; then
6466     # disable some annoying warnings
6467     add_cflags -msg_disable bitnotint
6468     add_cflags -msg_disable mixfuncvoid
6469     add_cflags -msg_disable nonstandcast
6470     add_cflags -msg_disable unsupieee
6471 elif enabled gcc; then
6472     check_optflags -fno-tree-vectorize
6473     check_cflags -Werror=format-security
6474     check_cflags -Werror=implicit-function-declaration
6475     check_cflags -Werror=missing-prototypes
6476     check_cflags -Werror=return-type
6477     check_cflags -Werror=vla
6478     check_cflags -Wformat
6479     check_cflags -fdiagnostics-color=auto
6480     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6481 elif enabled llvm_gcc; then
6482     check_cflags -mllvm -stack-alignment=16
6483 elif enabled clang; then
6484     check_cflags -mllvm -stack-alignment=16
6485     check_cflags -mstack-alignment=16
6486     check_cflags -Qunused-arguments
6487     check_cflags -Werror=implicit-function-declaration
6488     check_cflags -Werror=missing-prototypes
6489     check_cflags -Werror=return-type
6490 elif enabled cparser; then
6491     add_cflags -Wno-missing-variable-declarations
6492     add_cflags -Wno-empty-statement
6493 elif enabled armcc; then
6494     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6495     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6496     # 2523: use of inline assembly is deprecated
6497     add_cflags -W${armcc_opt},--diag_suppress=2523
6498     add_cflags -W${armcc_opt},--diag_suppress=1207
6499     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6500     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6501     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6502     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6503 elif enabled tms470; then
6504     add_cflags -pds=824 -pds=837
6505     disable inline_asm
6506 elif enabled pathscale; then
6507     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6508 elif enabled_any msvc icl; then
6509     enabled x86_32 && disable aligned_stack
6510     enabled_all x86_32 debug && add_cflags -Oy-
6511     enabled debug && add_ldflags -debug
6512     enable pragma_deprecated
6513     if enabled icl; then
6514         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6515         # (correctly) on icl 13.x.
6516         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6517             add_cflags -Qansi-alias
6518         # Some inline asm is not compilable in debug
6519         if enabled debug; then
6520             disable ebp_available
6521             disable ebx_available
6522         fi
6523     fi
6524     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6525     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6526     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6527     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6528     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6529     # MSVC 2013 and newer can handle it fine.
6530     # If this declspec fails, force including stdlib.h before the restrict redefinition
6531     # happens in config.h.
6532     if [ $_restrict != restrict ]; then
6533         check_cc <<EOF || add_cflags -FIstdlib.h
6534 __declspec($_restrict) void* foo(int);
6535 EOF
6536     fi
6537     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6538     # Issue has been fixed in MSVC v19.00.24218.
6539     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6540         check_cflags -d2SSAOptimizer-
6541     # enable utf-8 source processing on VS2015 U2 and newer
6542     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6543         add_cflags -utf-8
6544 fi
6545
6546 for pfx in "" host_; do
6547     varname=${pfx%_}cc_type
6548     eval "type=\$$varname"
6549     if [ "$type" = "msvc" ]; then
6550         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6551 static inline int foo(int a) { return a; }
6552 EOF
6553     fi
6554 done
6555
6556 case $as_type in
6557     clang)
6558         add_asflags -Qunused-arguments
6559     ;;
6560 esac
6561
6562 case $ld_type in
6563     clang)
6564         check_ldflags -Qunused-arguments
6565     ;;
6566 esac
6567
6568 case $target_os in
6569     osf1)
6570         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6571     ;;
6572 esac
6573
6574 enable frame_thread_encoder
6575
6576 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6577
6578 check_deps $CONFIG_LIST       \
6579            $CONFIG_EXTRA      \
6580            $HAVE_LIST         \
6581            $ALL_COMPONENTS    \
6582
6583 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"
6584
6585
6586 if test $target_os = "haiku"; then
6587     disable memalign
6588     disable posix_memalign
6589 fi
6590
6591 # add_dep lib dep
6592 # -> enable ${lib}_deps_${dep}
6593 # -> add $dep to ${lib}_deps only once
6594 add_dep() {
6595     lib=$1
6596     dep=$2
6597     enabled "${lib}_deps_${dep}" && return 0
6598     enable  "${lib}_deps_${dep}"
6599     prepend "${lib}_deps" $dep
6600 }
6601
6602 # merge deps lib components
6603 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6604 merge_deps() {
6605     lib=$1
6606     shift
6607     for comp in $*; do
6608         enabled $comp || continue
6609         eval "dep=\"\$${comp}_deps\""
6610         for d in $dep; do
6611             add_dep $lib $d
6612         done
6613     done
6614 }
6615
6616 merge_deps libavfilter $FILTER_LIST
6617
6618 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6619
6620 for thread in $THREADS_LIST; do
6621     if enabled $thread; then
6622         test -n "$thread_type" &&
6623             die "ERROR: Only one thread type must be selected." ||
6624             thread_type="$thread"
6625     fi
6626 done
6627
6628 if disabled stdatomic_h; then
6629     if enabled atomics_gcc; then
6630         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6631     elif enabled atomics_win32; then
6632         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6633     elif enabled atomics_suncc; then
6634         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6635     elif enabled pthreads; then
6636         add_compat atomics/pthread/stdatomic.o
6637         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6638     else
6639         enabled threads && die "Threading is enabled, but no atomics are available"
6640         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6641     fi
6642 fi
6643
6644 # Check if requested libraries were found.
6645 for lib in $AUTODETECT_LIBS; do
6646     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6647 done
6648
6649 enabled zlib && add_cppflags -DZLIB_CONST
6650
6651 # conditional library dependencies, in linking order
6652 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6653 enabled afir_filter         && prepend avfilter_deps "avcodec"
6654 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6655 enabled aresample_filter    && prepend avfilter_deps "swresample"
6656 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6657 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6658 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6659 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6660 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6661 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6662 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6663 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6664 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6665 enabled pan_filter          && prepend avfilter_deps "swresample"
6666 enabled pp_filter           && prepend avfilter_deps "postproc"
6667 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6668 enabled resample_filter && prepend avfilter_deps "avresample"
6669 enabled sab_filter          && prepend avfilter_deps "swscale"
6670 enabled scale_filter    && prepend avfilter_deps "swscale"
6671 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6672 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6673 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6674 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6675 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6676 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6677 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6678 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6679 enabled spp_filter          && prepend avfilter_deps "avcodec"
6680 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6681 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6682 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6683
6684 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6685
6686 enabled opus_decoder    && prepend avcodec_deps "swresample"
6687
6688 expand_deps(){
6689     lib_deps=${1}_deps
6690     eval "deps=\$$lib_deps"
6691     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6692     unique $lib_deps
6693 }
6694
6695 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6696 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6697
6698 map 'expand_deps $v' $LIBRARY_LIST
6699
6700 license="LGPL version 2.1 or later"
6701 if enabled nonfree; then
6702     license="nonfree and unredistributable"
6703 elif enabled gplv3; then
6704     license="GPL version 3 or later"
6705 elif enabled lgplv3; then
6706     license="LGPL version 3 or later"
6707 elif enabled gpl; then
6708     license="GPL version 2 or later"
6709 fi
6710
6711 if test "$quiet" != "yes"; then
6712
6713 echo "install prefix            $prefix"
6714 echo "source path               $source_path"
6715 echo "C compiler                $cc"
6716 echo "C library                 $libc_type"
6717 if test "$host_cc" != "$cc"; then
6718     echo "host C compiler           $host_cc"
6719     echo "host C library            $host_libc_type"
6720 fi
6721 echo "ARCH                      $arch ($cpu)"
6722 if test "$build_suffix" != ""; then
6723     echo "build suffix              $build_suffix"
6724 fi
6725 if test "$progs_suffix" != ""; then
6726     echo "progs suffix              $progs_suffix"
6727 fi
6728 if test "$extra_version" != ""; then
6729     echo "version string suffix     $extra_version"
6730 fi
6731 echo "big-endian                ${bigendian-no}"
6732 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6733 if enabled x86; then
6734     echo "standalone assembly       ${x86asm-no}"
6735     echo "x86 assembler             ${x86asmexe}"
6736     echo "MMX enabled               ${mmx-no}"
6737     echo "MMXEXT enabled            ${mmxext-no}"
6738     echo "3DNow! enabled            ${amd3dnow-no}"
6739     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6740     echo "SSE enabled               ${sse-no}"
6741     echo "SSSE3 enabled             ${ssse3-no}"
6742     echo "AESNI enabled             ${aesni-no}"
6743     echo "AVX enabled               ${avx-no}"
6744     echo "AVX2 enabled              ${avx2-no}"
6745     echo "XOP enabled               ${xop-no}"
6746     echo "FMA3 enabled              ${fma3-no}"
6747     echo "FMA4 enabled              ${fma4-no}"
6748     echo "i686 features enabled     ${i686-no}"
6749     echo "CMOV is fast              ${fast_cmov-no}"
6750     echo "EBX available             ${ebx_available-no}"
6751     echo "EBP available             ${ebp_available-no}"
6752 fi
6753 if enabled aarch64; then
6754     echo "NEON enabled              ${neon-no}"
6755     echo "VFP enabled               ${vfp-no}"
6756 fi
6757 if enabled arm; then
6758     echo "ARMv5TE enabled           ${armv5te-no}"
6759     echo "ARMv6 enabled             ${armv6-no}"
6760     echo "ARMv6T2 enabled           ${armv6t2-no}"
6761     echo "VFP enabled               ${vfp-no}"
6762     echo "NEON enabled              ${neon-no}"
6763     echo "THUMB enabled             ${thumb-no}"
6764 fi
6765 if enabled mips; then
6766     echo "MIPS FPU enabled          ${mipsfpu-no}"
6767     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6768     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6769     echo "MIPS MSA enabled          ${msa-no}"
6770     echo "LOONGSON MMI enabled      ${mmi-no}"
6771 fi
6772 if enabled ppc; then
6773     echo "AltiVec enabled           ${altivec-no}"
6774     echo "VSX enabled               ${vsx-no}"
6775     echo "POWER8 enabled            ${power8-no}"
6776     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6777     echo "dcbzl available           ${dcbzl-no}"
6778 fi
6779 echo "debug symbols             ${debug-no}"
6780 echo "strip symbols             ${stripping-no}"
6781 echo "optimize for size         ${small-no}"
6782 echo "optimizations             ${optimizations-no}"
6783 echo "static                    ${static-no}"
6784 echo "shared                    ${shared-no}"
6785 echo "postprocessing support    ${postproc-no}"
6786 echo "network support           ${network-no}"
6787 echo "threading support         ${thread_type-no}"
6788 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6789 echo "texi2html enabled         ${texi2html-no}"
6790 echo "perl enabled              ${perl-no}"
6791 echo "pod2man enabled           ${pod2man-no}"
6792 echo "makeinfo enabled          ${makeinfo-no}"
6793 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6794 test -n "$random_seed" &&
6795     echo "random seed               ${random_seed}"
6796 echo
6797
6798 echo "External libraries:"
6799 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6800 echo
6801
6802 echo "External libraries providing hardware acceleration:"
6803 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6804 echo
6805
6806 echo "Libraries:"
6807 print_enabled '' $LIBRARY_LIST | print_in_columns
6808 echo
6809
6810 echo "Programs:"
6811 print_enabled '' $PROGRAM_LIST | print_in_columns
6812 echo
6813
6814 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6815     echo "Enabled ${type}s:"
6816     eval list=\$$(toupper $type)_LIST
6817     print_enabled '_*' $list | print_in_columns
6818     echo
6819 done
6820
6821 if test -n "$ignore_tests"; then
6822     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6823     echo "Ignored FATE tests:"
6824     echo $ignore_tests | print_in_columns
6825     echo
6826 fi
6827
6828 echo "License: $license"
6829
6830 echo "Creating configuration files ..."
6831
6832 fi # test "$quiet" != "yes"
6833
6834 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6835
6836 enabled stripping || strip="echo skipping strip"
6837
6838 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6839
6840 cat > ffbuild/config.mak <<EOF
6841 # Automatically generated by configure - do not modify!
6842 ifndef FFMPEG_CONFIG_MAK
6843 FFMPEG_CONFIG_MAK=1
6844 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6845 prefix=$prefix
6846 LIBDIR=\$(DESTDIR)$libdir
6847 SHLIBDIR=\$(DESTDIR)$shlibdir
6848 INCDIR=\$(DESTDIR)$incdir
6849 BINDIR=\$(DESTDIR)$bindir
6850 DATADIR=\$(DESTDIR)$datadir
6851 DOCDIR=\$(DESTDIR)$docdir
6852 MANDIR=\$(DESTDIR)$mandir
6853 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6854 INSTALL_NAME_DIR=$install_name_dir
6855 SRC_PATH=$source_path
6856 SRC_LINK=$source_link
6857 ifndef MAIN_MAKEFILE
6858 SRC_PATH:=\$(SRC_PATH:.%=..%)
6859 endif
6860 CC_IDENT=$cc_ident
6861 ARCH=$arch
6862 INTRINSICS=$intrinsics
6863 CC=$cc
6864 CXX=$cxx
6865 AS=$as
6866 OBJCC=$objcc
6867 LD=$ld
6868 DEPCC=$dep_cc
6869 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6870 DEPAS=$as
6871 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6872 X86ASM=$x86asmexe
6873 DEPX86ASM=$x86asmexe
6874 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6875 AR=$ar
6876 ARFLAGS=$arflags
6877 AR_O=$ar_o
6878 RANLIB=$ranlib
6879 STRIP=$strip
6880 NVCC=$nvcc
6881 CP=cp -p
6882 LN_S=$ln_s
6883 CPPFLAGS=$CPPFLAGS
6884 CFLAGS=$CFLAGS
6885 CXXFLAGS=$CXXFLAGS
6886 OBJCFLAGS=$OBJCFLAGS
6887 ASFLAGS=$ASFLAGS
6888 NVCCFLAGS=$nvccflags
6889 AS_C=$AS_C
6890 AS_O=$AS_O
6891 OBJCC_C=$OBJCC_C
6892 OBJCC_E=$OBJCC_E
6893 OBJCC_O=$OBJCC_O
6894 CC_C=$CC_C
6895 CC_E=$CC_E
6896 CC_O=$CC_O
6897 CXX_C=$CXX_C
6898 CXX_O=$CXX_O
6899 NVCC_C=$NVCC_C
6900 NVCC_O=$NVCC_O
6901 LD_O=$LD_O
6902 X86ASM_O=$X86ASM_O
6903 LD_LIB=$LD_LIB
6904 LD_PATH=$LD_PATH
6905 DLLTOOL=$dlltool
6906 WINDRES=$windres
6907 DEPWINDRES=$dep_cc
6908 DOXYGEN=$doxygen
6909 LDFLAGS=$LDFLAGS
6910 LDEXEFLAGS=$LDEXEFLAGS
6911 LDLIBFLAGS=$LDLIBFLAGS
6912 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6913 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6914 X86ASMFLAGS=$X86ASMFLAGS
6915 BUILDSUF=$build_suffix
6916 PROGSSUF=$progs_suffix
6917 FULLNAME=$FULLNAME
6918 LIBPREF=$LIBPREF
6919 LIBSUF=$LIBSUF
6920 LIBNAME=$LIBNAME
6921 SLIBPREF=$SLIBPREF
6922 SLIBSUF=$SLIBSUF
6923 EXESUF=$EXESUF
6924 EXTRA_VERSION=$extra_version
6925 CCDEP=$CCDEP
6926 CXXDEP=$CXXDEP
6927 CCDEP_FLAGS=$CCDEP_FLAGS
6928 ASDEP=$ASDEP
6929 ASDEP_FLAGS=$ASDEP_FLAGS
6930 X86ASMDEP=$X86ASMDEP
6931 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6932 CC_DEPFLAGS=$CC_DEPFLAGS
6933 AS_DEPFLAGS=$AS_DEPFLAGS
6934 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6935 HOSTCC=$host_cc
6936 HOSTLD=$host_ld
6937 HOSTCFLAGS=$host_cflags
6938 HOSTCPPFLAGS=$host_cppflags
6939 HOSTEXESUF=$HOSTEXESUF
6940 HOSTLDFLAGS=$host_ldflags
6941 HOSTEXTRALIBS=$host_extralibs
6942 DEPHOSTCC=$host_cc
6943 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6944 HOSTCCDEP=$HOSTCCDEP
6945 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6946 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6947 HOSTCC_C=$HOSTCC_C
6948 HOSTCC_O=$HOSTCC_O
6949 HOSTLD_O=$HOSTLD_O
6950 TARGET_EXEC=$target_exec $target_exec_args
6951 TARGET_PATH=$target_path
6952 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6953 CFLAGS-ffplay=${sdl2_cflags}
6954 CFLAGS_HEADERS=$CFLAGS_HEADERS
6955 ZLIB=$($ldflags_filter -lz)
6956 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6957 EXTRALIBS=$extralibs
6958 COMPAT_OBJS=$compat_objs
6959 INSTALL=$install
6960 LIBTARGET=${LIBTARGET}
6961 SLIBNAME=${SLIBNAME}
6962 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6963 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6964 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6965 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6966 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6967 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6968 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6969 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6970 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6971 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6972 NOREDZONE_FLAGS=$noredzone_flags
6973 LIBFUZZER_PATH=$libfuzzer_path
6974 IGNORE_TESTS=$ignore_tests
6975 EOF
6976
6977 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6978
6979 print_program_extralibs(){
6980     eval "program_extralibs=\$${1}_extralibs"
6981     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6982 }
6983
6984 map 'print_program_extralibs $v' $PROGRAM_LIST
6985
6986 cat > $TMPH <<EOF
6987 /* Automatically generated by configure - do not modify! */
6988 #ifndef FFMPEG_CONFIG_H
6989 #define FFMPEG_CONFIG_H
6990 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6991 #define FFMPEG_LICENSE "$(c_escape $license)"
6992 #define CONFIG_THIS_YEAR 2017
6993 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6994 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6995 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6996 #define av_restrict $_restrict
6997 #define EXTERN_PREFIX "${extern_prefix}"
6998 #define EXTERN_ASM ${extern_prefix}
6999 #define BUILDSUF "$build_suffix"
7000 #define SLIBSUF "$SLIBSUF"
7001 #define HAVE_MMX2 HAVE_MMXEXT
7002 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7003 EOF
7004
7005 test -n "$assert_level" &&
7006     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7007
7008 test -n "$malloc_prefix" &&
7009     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7010
7011 if enabled x86asm; then
7012     append config_files $TMPASM
7013     printf '' >$TMPASM
7014 fi
7015
7016 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7017
7018
7019 mkdir -p doc
7020 mkdir -p tests
7021 mkdir -p tests/api
7022 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7023
7024 print_config ARCH_   "$config_files" $ARCH_LIST
7025 print_config HAVE_   "$config_files" $HAVE_LIST
7026 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7027                                      $CONFIG_EXTRA      \
7028                                      $ALL_COMPONENTS    \
7029
7030 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7031 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7032
7033 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7034 cp_if_changed $TMPH config.h
7035 touch ffbuild/.config
7036
7037 enabled x86asm && cp_if_changed $TMPASM config.asm
7038
7039 cat > $TMPH <<EOF
7040 /* Generated by ffconf */
7041 #ifndef AVUTIL_AVCONFIG_H
7042 #define AVUTIL_AVCONFIG_H
7043 EOF
7044
7045 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7046
7047 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7048
7049 cp_if_changed $TMPH libavutil/avconfig.h
7050
7051 # generate the lists of enabled components
7052 print_enabled_components(){
7053     file=$1
7054     struct_name=$2
7055     name=$3
7056     shift 3
7057     echo "static const $struct_name * const $name[] = {" > $TMPH
7058     for c in $*; do
7059         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7060     done
7061     echo "    NULL };" >> $TMPH
7062     cp_if_changed $TMPH $file
7063 }
7064
7065 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7066 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7067
7068 if test -n "$WARNINGS"; then
7069     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7070     enabled fatal_warnings && exit 1
7071 fi
7072
7073 # Settings for pkg-config files
7074
7075 cat > ffbuild/config.sh <<EOF
7076 # Automatically generated by configure - do not modify!
7077 shared=$shared
7078 build_suffix=$build_suffix
7079 prefix=$prefix
7080 libdir=$libdir
7081 incdir=$incdir
7082 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7083 source_path=${source_path}
7084 LIBPREF=${LIBPREF}
7085 LIBSUF=${LIBSUF}
7086
7087 extralibs_avutil="$LIBRT $LIBM"
7088 extralibs_avcodec="$extralibs"
7089 extralibs_avformat="$extralibs"
7090 extralibs_avdevice="$extralibs"
7091 extralibs_avfilter="$extralibs"
7092 extralibs_avresample="$LIBM"
7093 extralibs_postproc=""
7094 extralibs_swscale="$LIBM"
7095 extralibs_swresample="$LIBM $LIBSOXR"
7096 EOF
7097
7098 for lib in $LIBRARY_LIST; do
7099     lib_deps="$(eval echo \$${lib}_deps)"
7100     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7101 done