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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --enable-jni             enable JNI support [no]
 221   --enable-ladspa          enable LADSPA audio filtering [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --disable-lzma           disable lzma [autodetect]
 287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 289   --enable-mediacodec      enable Android MediaCodec support [no]
 290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 291   --enable-openal          enable OpenAL 1.1 capture support [no]
 292   --enable-opencl          enable OpenCL code
 293   --enable-opengl          enable OpenGL rendering [no]
 294   --enable-openssl         enable openssl, needed for https support
 295                            if gnutls is not used [no]
 296   --disable-sndio          disable sndio support [autodetect]
 297   --disable-schannel       disable SChannel SSP, needed for TLS support on
 298                            Windows if openssl and gnutls are not used [autodetect]
 299   --disable-sdl2           disable sdl2 [autodetect]
 300   --disable-securetransport disable Secure Transport, needed for TLS support
 301                            on OSX if openssl and gnutls are not used [autodetect]
 302   --disable-xlib           disable xlib [autodetect]
 303   --disable-zlib           disable zlib [autodetect]
 304
 305   The following libraries provide various hardware acceleration features:
 306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 312   --enable-libdrm          enable DRM code (Linux) [no]
 313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 316   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 317   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 318   --enable-omx             enable OpenMAX IL code [no]
 319   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 320   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 321   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 324
 325 Toolchain options:
 326   --arch=ARCH              select architecture [$arch]
 327   --cpu=CPU                select the minimum required CPU (affects
 328                            instruction selection, may crash on older CPUs)
 329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 330   --progs-suffix=SUFFIX    program name suffix []
 331   --enable-cross-compile   assume a cross-compiler is used
 332   --sysroot=PATH           root of cross-build tree
 333   --sysinclude=PATH        location of cross-build system headers
 334   --target-os=OS           compiler targets OS [$target_os]
 335   --target-exec=CMD        command to run executables on target
 336   --target-path=DIR        path to view of build directory on target
 337   --target-samples=DIR     path to samples directory on target
 338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 339   --toolchain=NAME         set tool defaults according to NAME
 340   --nm=NM                  use nm tool NM [$nm_default]
 341   --ar=AR                  use archive tool AR [$ar_default]
 342   --as=AS                  use assembler AS [$as_default]
 343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 344   --strip=STRIP            use strip tool STRIP [$strip_default]
 345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 347   --cc=CC                  use C compiler CC [$cc_default]
 348   --cxx=CXX                use C compiler CXX [$cxx_default]
 349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 352   --ld=LD                  use linker LD [$ld_default]
 353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 357   --host-cc=HOSTCC         use host C compiler HOSTCC
 358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 360   --host-ld=HOSTLD         use host linker HOSTLD
 361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 362   --host-libs=HLIBS        use libs HLIBS when linking for host
 363   --host-os=OS             compiler host OS [$target_os]
 364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 369   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 371   --extra-version=STRING   version string suffix []
 372   --optflags=OPTFLAGS      override optimization-related compiler flags
 373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 374   --build-suffix=SUFFIX    library name suffix []
 375   --enable-pic             build position-independent code
 376   --enable-thumb           compile for Thumb instruction set
 377   --enable-lto             use link-time optimization
 378   --env="ENV=override"     override the environment variables
 379
 380 Advanced options (experts only):
 381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 382   --custom-allocator=NAME  use a supported custom allocator
 383   --disable-symver         disable symbol versioning
 384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 385   --disable-safe-bitstream-reader
 386                            disable buffer boundary checking in bitreaders
 387                            (faster, but may crash)
 388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 389
 390 Optimization options (experts only):
 391   --disable-asm            disable all assembly optimizations
 392   --disable-altivec        disable AltiVec optimizations
 393   --disable-vsx            disable VSX optimizations
 394   --disable-power8         disable POWER8 optimizations
 395   --disable-amd3dnow       disable 3DNow! optimizations
 396   --disable-amd3dnowext    disable 3DNow! extended optimizations
 397   --disable-mmx            disable MMX optimizations
 398   --disable-mmxext         disable MMXEXT optimizations
 399   --disable-sse            disable SSE optimizations
 400   --disable-sse2           disable SSE2 optimizations
 401   --disable-sse3           disable SSE3 optimizations
 402   --disable-ssse3          disable SSSE3 optimizations
 403   --disable-sse4           disable SSE4 optimizations
 404   --disable-sse42          disable SSE4.2 optimizations
 405   --disable-avx            disable AVX optimizations
 406   --disable-xop            disable XOP optimizations
 407   --disable-fma3           disable FMA3 optimizations
 408   --disable-fma4           disable FMA4 optimizations
 409   --disable-avx2           disable AVX2 optimizations
 410   --disable-aesni          disable AESNI optimizations
 411   --disable-armv5te        disable armv5te optimizations
 412   --disable-armv6          disable armv6 optimizations
 413   --disable-armv6t2        disable armv6t2 optimizations
 414   --disable-vfp            disable VFP optimizations
 415   --disable-neon           disable NEON optimizations
 416   --disable-inline-asm     disable use of inline assembly
 417   --disable-x86asm         disable use of standalone x86 assembly
 418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 420   --disable-msa            disable MSA optimizations
 421   --disable-mipsfpu        disable floating point MIPS optimizations
 422   --disable-mmi            disable Loongson SIMD optimizations
 423   --disable-fast-unaligned consider unaligned accesses slow
 424
 425 Developer options (useful when working on FFmpeg itself):
 426   --disable-debug          disable debugging symbols
 427   --enable-debug=LEVEL     set the debug level [$debuglevel]
 428   --disable-optimizations  disable compiler optimizations
 429   --enable-extra-warnings  enable more compiler warnings
 430   --disable-stripping      disable stripping of executables and shared libraries
 431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 432                            2 causes a slowdown at runtime.
 433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 435                            leaks and errors, using the specified valgrind binary.
 436                            Cannot be combined with --target-exec
 437   --enable-ftrapv          Trap arithmetic overflows
 438   --samples=PATH           location of test samples for FATE, if not set use
 439                            \$FATE_SAMPLES at make invocation time.
 440   --enable-neon-clobber-test check NEON registers for clobbering (should be
 441                            used only for debugging purposes)
 442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 443                            should be used only for debugging purposes)
 444   --enable-random          randomly enable/disable components
 445   --disable-random
 446   --enable-random=LIST     randomly enable/disable specific components or
 447   --disable-random=LIST    component groups. LIST is a comma-separated list
 448                            of NAME[:PROB] entries where NAME is a component
 449                            (group) and PROB the probability associated with
 450                            NAME (default 0.5).
 451   --random-seed=VALUE      seed value for --enable/disable-random
 452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 453                            (only applies to --disable-optimizations builds)
 454   --enable-osfuzz          Enable building fuzzer tool
 455   --libfuzzer=PATH         path to libfuzzer
 456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 457                            in the name) of tests whose result is ignored
 458   --enable-linux-perf      enable Linux Performance Monitor API
 459
 460 NOTE: Object files are built at the place where configure is launched.
 461 EOF
 462   exit 0
 463 }
 464
 465 if test -t 1 && which tput >/dev/null 2>&1; then
 466     ncolors=$(tput colors)
 467     if test -n "$ncolors" && test $ncolors -ge 8; then
 468         bold_color=$(tput bold)
 469         warn_color=$(tput setaf 3)
 470         error_color=$(tput setaf 1)
 471         reset_color=$(tput sgr0)
 472     fi
 473     # 72 used instead of 80 since that's the default of pr
 474     ncols=$(tput cols)
 475 fi
 476 : ${ncols:=72}
 477
 478 log(){
 479     echo "$@" >> $logfile
 480 }
 481
 482 log_file(){
 483     log BEGIN $1
 484     pr -n -t $1 >> $logfile
 485     log END $1
 486 }
 487
 488 warn(){
 489     log "WARNING: $*"
 490     WARNINGS="${WARNINGS}WARNING: $*\n"
 491 }
 492
 493 die(){
 494     log "$@"
 495     echo "$error_color$bold_color$@$reset_color"
 496     cat <<EOF
 497
 498 If you think configure made a mistake, make sure you are using the latest
 499 version from Git.  If the latest version fails, report the problem to the
 500 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 501 EOF
 502     if disabled logging; then
 503         cat <<EOF
 504 Rerun configure with logging enabled (do not use --disable-logging), and
 505 include the log this produces with your report.
 506 EOF
 507     else
 508         cat <<EOF
 509 Include the log file "$logfile" produced by configure as this will help
 510 solve the problem.
 511 EOF
 512     fi
 513     exit 1
 514 }
 515
 516 # Avoid locale weirdness, besides we really just want to translate ASCII.
 517 toupper(){
 518     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 519 }
 520
 521 tolower(){
 522     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 523 }
 524
 525 c_escape(){
 526     echo "$*" | sed 's/["\\]/\\\0/g'
 527 }
 528
 529 sh_quote(){
 530     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 531     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 532     echo "$v"
 533 }
 534
 535 cleanws(){
 536     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 537 }
 538
 539 filter(){
 540     pat=$1
 541     shift
 542     for v; do
 543         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 544     done
 545 }
 546
 547 filter_out(){
 548     pat=$1
 549     shift
 550     for v; do
 551         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 552     done
 553 }
 554
 555 map(){
 556     m=$1
 557     shift
 558     for v; do eval $m; done
 559 }
 560
 561 add_suffix(){
 562     suffix=$1
 563     shift
 564     for v; do echo ${v}${suffix}; done
 565 }
 566
 567 set_all(){
 568     value=$1
 569     shift
 570     for var in $*; do
 571         eval $var=$value
 572     done
 573 }
 574
 575 set_weak(){
 576     value=$1
 577     shift
 578     for var; do
 579         eval : \${$var:=$value}
 580     done
 581 }
 582
 583 sanitize_var_name(){
 584     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 585 }
 586
 587 set_sanitized(){
 588     var=$1
 589     shift
 590     eval $(sanitize_var_name "$var")='$*'
 591 }
 592
 593 get_sanitized(){
 594     eval echo \$$(sanitize_var_name "$1")
 595 }
 596
 597 pushvar(){
 598     for pvar in $*; do
 599         eval level=\${${pvar}_level:=0}
 600         eval ${pvar}_${level}="\$$pvar"
 601         eval ${pvar}_level=$(($level+1))
 602     done
 603 }
 604
 605 popvar(){
 606     for pvar in $*; do
 607         eval level=\${${pvar}_level:-0}
 608         test $level = 0 && continue
 609         eval level=$(($level-1))
 610         eval $pvar="\${${pvar}_${level}}"
 611         eval ${pvar}_level=$level
 612         eval unset ${pvar}_${level}
 613     done
 614 }
 615
 616 request(){
 617     for var in $*; do
 618         eval ${var}_requested=yes
 619         eval $var=
 620     done
 621 }
 622
 623 enable(){
 624     set_all yes $*
 625 }
 626
 627 disable(){
 628     set_all no $*
 629 }
 630
 631 enable_weak(){
 632     set_weak yes $*
 633 }
 634
 635 disable_weak(){
 636     set_weak no $*
 637 }
 638
 639 enable_sanitized(){
 640     for var; do
 641         enable $(sanitize_var_name $var)
 642     done
 643 }
 644
 645 disable_sanitized(){
 646     for var; do
 647         disable $(sanitize_var_name $var)
 648     done
 649 }
 650
 651 do_enable_deep(){
 652     for var; do
 653         enabled $var && continue
 654         eval sel="\$${var}_select"
 655         eval sgs="\$${var}_suggest"
 656         pushvar var sgs
 657         enable_deep $sel
 658         popvar sgs
 659         enable_deep_weak $sgs
 660         popvar var
 661     done
 662 }
 663
 664 enable_deep(){
 665     do_enable_deep $*
 666     enable $*
 667 }
 668
 669 enable_deep_weak(){
 670     for var; do
 671         disabled $var && continue
 672         pushvar var
 673         do_enable_deep $var
 674         popvar var
 675         enable_weak $var
 676     done
 677 }
 678
 679 requested(){
 680     test "${1#!}" = "$1" && op="=" || op="!="
 681     eval test "x\$${1#!}_requested" $op "xyes"
 682 }
 683
 684 enabled(){
 685     test "${1#!}" = "$1" && op="=" || op="!="
 686     eval test "x\$${1#!}" $op "xyes"
 687 }
 688
 689 disabled(){
 690     test "${1#!}" = "$1" && op="=" || op="!="
 691     eval test "x\$${1#!}" $op "xno"
 692 }
 693
 694 enabled_all(){
 695     for opt; do
 696         enabled $opt || return 1
 697     done
 698 }
 699
 700 disabled_all(){
 701     for opt; do
 702         disabled $opt || return 1
 703     done
 704 }
 705
 706 enabled_any(){
 707     for opt; do
 708         enabled $opt && return 0
 709     done
 710 }
 711
 712 disabled_any(){
 713     for opt; do
 714         disabled $opt && return 0
 715     done
 716     return 1
 717 }
 718
 719 set_default(){
 720     for opt; do
 721         eval : \${$opt:=\$${opt}_default}
 722     done
 723 }
 724
 725 is_in(){
 726     value=$1
 727     shift
 728     for var in $*; do
 729         [ $var = $value ] && return 0
 730     done
 731     return 1
 732 }
 733
 734 check_deps(){
 735     for cfg; do
 736         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 737         disabled ${cfg}_checking && continue
 738         enable ${cfg}_checking
 739
 740         eval dep_all="\$${cfg}_deps"
 741         eval dep_any="\$${cfg}_deps_any"
 742         eval dep_con="\$${cfg}_conflict"
 743         eval dep_sel="\$${cfg}_select"
 744         eval dep_sgs="\$${cfg}_suggest"
 745         eval dep_ifa="\$${cfg}_if"
 746         eval dep_ifn="\$${cfg}_if_any"
 747
 748         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 749         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 750         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 751
 752         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 753         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 754         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 755         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 756         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 757         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 758
 759         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 760
 761         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 762             # filter out library deps, these do not belong in extralibs
 763             is_in $dep $LIBRARY_LIST && continue
 764             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 765         done
 766
 767         disable ${cfg}_checking
 768     done
 769 }
 770
 771 print_config(){
 772     pfx=$1
 773     files=$2
 774     shift 2
 775     map 'eval echo "$v \${$v:-no}"' "$@" |
 776     awk "BEGIN { split(\"$files\", files) }
 777         {
 778             c = \"$pfx\" toupper(\$1);
 779             v = \$2;
 780             sub(/yes/, 1, v);
 781             sub(/no/,  0, v);
 782             for (f in files) {
 783                 file = files[f];
 784                 if (file ~ /\\.h\$/) {
 785                     printf(\"#define %s %d\\n\", c, v) >>file;
 786                 } else if (file ~ /\\.asm\$/) {
 787                     printf(\"%%define %s %d\\n\", c, v) >>file;
 788                 } else if (file ~ /\\.mak\$/) {
 789                     n = -v ? \"\" : \"!\";
 790                     printf(\"%s%s=yes\\n\", n, c) >>file;
 791                 } else if (file ~ /\\.texi\$/) {
 792                     pre = -v ? \"\" : \"@c \";
 793                     yesno = \$2;
 794                     c2 = tolower(c);
 795                     gsub(/_/, \"-\", c2);
 796                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 797                 }
 798             }
 799         }"
 800 }
 801
 802 print_enabled(){
 803     suf=$1
 804     shift
 805     for v; do
 806         enabled $v && printf "%s\n" ${v%$suf}
 807     done
 808 }
 809
 810 append(){
 811     var=$1
 812     shift
 813     eval "$var=\"\$$var $*\""
 814 }
 815
 816 prepend(){
 817     var=$1
 818     shift
 819     eval "$var=\"$* \$$var\""
 820 }
 821
 822 unique(){
 823     var=$1
 824     uniq_list=""
 825     for tok in $(eval echo \$$var); do
 826         uniq_list="$(filter_out $tok $uniq_list) $tok"
 827     done
 828     eval "$var=\"${uniq_list}\""
 829 }
 830
 831 resolve(){
 832     var=$1
 833     tmpvar=
 834     for entry in $(eval echo \$$var); do
 835         tmpvar="$tmpvar $(eval echo \$${entry})"
 836     done
 837     eval "$var=\"${tmpvar}\""
 838 }
 839
 840 add_cppflags(){
 841     append CPPFLAGS "$@"
 842 }
 843
 844 add_cflags(){
 845     append CFLAGS $($cflags_filter "$@")
 846 }
 847
 848 add_cflags_headers(){
 849     append CFLAGS_HEADERS $($cflags_filter "$@")
 850 }
 851
 852 add_cxxflags(){
 853     append CXXFLAGS $($cflags_filter "$@")
 854 }
 855
 856 add_asflags(){
 857     append ASFLAGS $($asflags_filter "$@")
 858 }
 859
 860 add_objcflags(){
 861     append OBJCFLAGS $($objcflags_filter "$@")
 862 }
 863
 864 add_ldflags(){
 865     append LDFLAGS $($ldflags_filter "$@")
 866 }
 867
 868 add_ldexeflags(){
 869     append LDEXEFLAGS $($ldflags_filter "$@")
 870 }
 871
 872 add_ldsoflags(){
 873     append LDSOFLAGS $($ldflags_filter "$@")
 874 }
 875
 876 add_stripflags(){
 877     append ASMSTRIPFLAGS "$@"
 878 }
 879
 880 add_extralibs(){
 881     prepend extralibs $($ldflags_filter "$@")
 882 }
 883
 884 add_host_cppflags(){
 885     append host_cppflags "$@"
 886 }
 887
 888 add_host_cflags(){
 889     append host_cflags $($host_cflags_filter "$@")
 890 }
 891
 892 add_host_ldflags(){
 893     append host_ldflags $($host_ldflags_filter "$@")
 894 }
 895
 896 add_compat(){
 897     append compat_objs $1
 898     shift
 899     map 'add_cppflags -D$v' "$@"
 900 }
 901
 902 check_cmd(){
 903     log "$@"
 904     "$@" >> $logfile 2>&1
 905 }
 906
 907 check_stat(){
 908     log check_stat "$@"
 909     stat "$1" >> $logfile 2>&1
 910 }
 911
 912 cc_o(){
 913     eval printf '%s\\n' $CC_O
 914 }
 915
 916 cc_e(){
 917     eval printf '%s\\n' $CC_E
 918 }
 919
 920 check_cc(){
 921     log check_cc "$@"
 922     cat > $TMPC
 923     log_file $TMPC
 924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 925 }
 926
 927 check_cxx(){
 928     log check_cxx "$@"
 929     cat > $TMPCPP
 930     log_file $TMPCPP
 931     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 932 }
 933
 934 check_objcc(){
 935     log check_objcc "$@"
 936     cat > $TMPM
 937     log_file $TMPM
 938     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 939 }
 940
 941 check_cpp(){
 942     log check_cpp "$@"
 943     cat > $TMPC
 944     log_file $TMPC
 945     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 946 }
 947
 948 as_o(){
 949     eval printf '%s\\n' $AS_O
 950 }
 951
 952 check_as(){
 953     log check_as "$@"
 954     cat > $TMPS
 955     log_file $TMPS
 956     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 957 }
 958
 959 check_inline_asm(){
 960     log check_inline_asm "$@"
 961     name="$1"
 962     code="$2"
 963     shift 2
 964     disable $name
 965     check_cc "$@" <<EOF && enable $name
 966 void foo(void){ __asm__ volatile($code); }
 967 EOF
 968 }
 969
 970 check_inline_asm_flags(){
 971     log check_inline_asm_flags "$@"
 972     name="$1"
 973     code="$2"
 974     flags=''
 975     shift 2
 976     while [ "$1" != "" ]; do
 977       append flags $1
 978       shift
 979     done;
 980     disable $name
 981     cat > $TMPC <<EOF
 982 void foo(void){ __asm__ volatile($code); }
 983 EOF
 984     log_file $TMPC
 985     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 986     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 987 }
 988
 989 check_insn(){
 990     log check_insn "$@"
 991     check_inline_asm ${1}_inline "\"$2\""
 992     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 993 }
 994
 995 check_x86asm(){
 996     log check_x86asm "$@"
 997     echo "$1" > $TMPS
 998     log_file $TMPS
 999     shift 1
1000     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 check_ld(){
1008     log check_ld "$@"
1009     type=$1
1010     shift 1
1011     flags=$(filter_out '-l*|*.so' $@)
1012     libs=$(filter '-l*|*.so' $@)
1013     check_$type $($cflags_filter $flags) || return
1014     flags=$($ldflags_filter $flags)
1015     libs=$($ldflags_filter $libs)
1016     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1017 }
1018
1019 print_include(){
1020     hdr=$1
1021     test "${hdr%.h}" = "${hdr}" &&
1022         echo "#include $hdr"    ||
1023         echo "#include <$hdr>"
1024 }
1025
1026 check_code(){
1027     log check_code "$@"
1028     check=$1
1029     headers=$2
1030     code=$3
1031     shift 3
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         echo "int main(void) { $code; return 0; }"
1037     } | check_$check "$@"
1038 }
1039
1040 check_cppflags(){
1041     log check_cppflags "$@"
1042     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1043 #include <stdlib.h>
1044 EOF
1045 }
1046
1047 test_cflags(){
1048     log test_cflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_cflags(){
1056     log check_cflags "$@"
1057     test_cflags "$@" && add_cflags "$@"
1058 }
1059
1060 check_cxxflags(){
1061     log check_cxxflags "$@"
1062     set -- $($cflags_filter "$@")
1063     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1064 int x;
1065 EOF
1066 }
1067
1068 test_objcflags(){
1069     log test_objcflags "$@"
1070     set -- $($objcflags_filter "$@")
1071     check_objcc "$@" <<EOF
1072 int x;
1073 EOF
1074 }
1075
1076 check_objcflags(){
1077     log check_objcflags "$@"
1078     test_objcflags "$@" && add_objcflags "$@"
1079 }
1080
1081 test_ldflags(){
1082     log test_ldflags "$@"
1083     set -- $($ldflags_filter "$@")
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     headers=$1
1111     shift
1112     disable_sanitized $headers
1113     {
1114         for hdr in $headers; do
1115             print_include $hdr
1116         done
1117         echo "int x;"
1118     } | check_cpp "$@" && enable_sanitized $headers
1119 }
1120
1121 check_header_objcc(){
1122     log check_header_objcc "$@"
1123     rm -f -- "$TMPO"
1124     header=$1
1125     shift
1126     disable_sanitized $header
1127     {
1128        echo "#include <$header>"
1129        echo "int main(void) { return 0; }"
1130     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1131 }
1132
1133 check_apple_framework(){
1134     log check_apple_framework "$@"
1135     framework="$1"
1136     name="$(tolower $framework)"
1137     header="${framework}/${framework}.h"
1138     disable $name
1139     check_header_objcc $header &&
1140         enable $name && eval ${name}_extralibs='"-framework $framework"'
1141 }
1142
1143 check_func(){
1144     log check_func "$@"
1145     func=$1
1146     shift
1147     disable $func
1148     check_ld "cc" "$@" <<EOF && enable $func
1149 extern int $func();
1150 int main(void){ $func(); }
1151 EOF
1152 }
1153
1154 check_complexfunc(){
1155     log check_complexfunc "$@"
1156     func=$1
1157     narg=$2
1158     shift 2
1159     test $narg = 2 && args="f, g" || args="f * I"
1160     disable $func
1161     check_ld "cc" "$@" <<EOF && enable $func
1162 #include <complex.h>
1163 #include <math.h>
1164 float foo(complex float f, complex float g) { return $func($args); }
1165 int main(void){ return (int) foo; }
1166 EOF
1167 }
1168
1169 check_mathfunc(){
1170     log check_mathfunc "$@"
1171     func=$1
1172     narg=$2
1173     shift 2
1174     test $narg = 2 && args="f, g" || args="f"
1175     disable $func
1176     check_ld "cc" "$@" <<EOF && enable $func
1177 #include <math.h>
1178 float foo(float f, float g) { return $func($args); }
1179 int main(void){ return (int) foo; }
1180 EOF
1181 }
1182
1183 check_func_headers(){
1184     log check_func_headers "$@"
1185     headers=$1
1186     funcs=$2
1187     shift 2
1188     {
1189         for hdr in $headers; do
1190             print_include $hdr
1191         done
1192         echo "#include <stdint.h>"
1193         for func in $funcs; do
1194             echo "long check_$func(void) { return (long) $func; }"
1195         done
1196         echo "int main(void) { int ret = 0;"
1197         # LTO could optimize out the test functions without this
1198         for func in $funcs; do
1199             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1200         done
1201         echo "return ret; }"
1202     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1203 }
1204
1205 check_class_headers_cpp(){
1206     log check_class_headers_cpp "$@"
1207     headers=$1
1208     classes=$2
1209     shift 2
1210     {
1211         for hdr in $headers; do
1212             echo "#include <$hdr>"
1213         done
1214         echo "int main(void) { "
1215         i=1
1216         for class in $classes; do
1217             echo "$class obj$i;"
1218             i=$(expr $i + 1)
1219         done
1220         echo "return 0; }"
1221     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1222 }
1223
1224 check_cpp_condition(){
1225     log check_cpp_condition "$@"
1226     header=$1
1227     condition=$2
1228     shift 2
1229     check_cpp "$@" <<EOF
1230 #include <$header>
1231 #if !($condition)
1232 #error "unsatisfied condition: $condition"
1233 #endif
1234 EOF
1235 }
1236
1237 test_cflags_cc(){
1238     log test_cflags_cc "$@"
1239     flags=$1
1240     header=$2
1241     condition=$3
1242     shift 3
1243     set -- $($cflags_filter "$flags")
1244     check_cc "$@" <<EOF
1245 #include <$header>
1246 #if !($condition)
1247 #error "unsatisfied condition: $condition"
1248 #endif
1249 EOF
1250 }
1251
1252 check_lib(){
1253     log check_lib "$@"
1254     name="$1"
1255     headers="$2"
1256     funcs="$3"
1257     shift 3
1258     disable $name
1259     check_func_headers "$headers" "$funcs" "$@" &&
1260         enable $name && eval ${name}_extralibs="\$@"
1261 }
1262
1263 check_lib_cpp(){
1264     log check_lib_cpp "$@"
1265     name="$1"
1266     headers="$2"
1267     classes="$3"
1268     shift 3
1269     disable $name
1270     check_class_headers_cpp "$headers" "$classes" "$@" &&
1271         enable $name && eval ${name}_extralibs="\$@"
1272 }
1273
1274 test_pkg_config(){
1275     log test_pkg_config "$@"
1276     name="$1"
1277     pkg_version="$2"
1278     pkg="${2%% *}"
1279     headers="$3"
1280     funcs="$4"
1281     shift 4
1282     disable $name
1283     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1284     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1285     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1286     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1287         enable $name &&
1288         set_sanitized "${name}_cflags"    $pkg_cflags &&
1289         set_sanitized "${name}_extralibs" $pkg_libs
1290 }
1291
1292 check_pkg_config(){
1293     log check_pkg_config "$@"
1294     name="$1"
1295     test_pkg_config "$@" &&
1296         eval add_cflags \$${name}_cflags
1297 }
1298
1299 check_exec(){
1300     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1301 }
1302
1303 check_exec_crash(){
1304     log check_exec_crash "$@"
1305     code=$(cat)
1306
1307     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1308     # are safe but may not be available everywhere.  Thus we use
1309     # raise(SIGTERM) instead.  The check is run in a subshell so we
1310     # can redirect the "Terminated" message from the shell.  SIGBUS
1311     # is not defined by standard C so it is used conditionally.
1312
1313     (check_exec "$@") >> $logfile 2>&1 <<EOF
1314 #include <signal.h>
1315 static void sighandler(int sig){
1316     raise(SIGTERM);
1317 }
1318 int foo(void){
1319     $code
1320 }
1321 int (*func_ptr)(void) = foo;
1322 int main(void){
1323     signal(SIGILL, sighandler);
1324     signal(SIGFPE, sighandler);
1325     signal(SIGSEGV, sighandler);
1326 #ifdef SIGBUS
1327     signal(SIGBUS, sighandler);
1328 #endif
1329     return func_ptr();
1330 }
1331 EOF
1332 }
1333
1334 check_type(){
1335     log check_type "$@"
1336     headers=$1
1337     type=$2
1338     shift 2
1339     disable_sanitized "$type"
1340     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1341 }
1342
1343 check_struct(){
1344     log check_struct "$@"
1345     headers=$1
1346     struct=$2
1347     member=$3
1348     shift 3
1349     disable_sanitized "${struct}_${member}"
1350     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1351         enable_sanitized "${struct}_${member}"
1352 }
1353
1354 check_builtin(){
1355     log check_builtin "$@"
1356     name=$1
1357     headers=$2
1358     builtin=$3
1359     shift 3
1360     disable "$name"
1361     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1362 }
1363
1364 check_compile_assert(){
1365     log check_compile_assert "$@"
1366     name=$1
1367     headers=$2
1368     condition=$3
1369     shift 3
1370     disable "$name"
1371     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1372 }
1373
1374 require(){
1375     log require "$@"
1376     name_version="$1"
1377     name="${1%% *}"
1378     headers="$2"
1379     func="$3"
1380     shift 3
1381     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1382 }
1383
1384 require_cpp(){
1385     name="$1"
1386     headers="$2"
1387     classes="$3"
1388     shift 3
1389     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1390 }
1391
1392 require_header(){
1393     log require_header "$@"
1394     headers="$1"
1395     shift
1396     check_header "$headers" "$@" || die "ERROR: $headers not found"
1397 }
1398
1399 require_cpp_condition(){
1400     log require_cpp_condition "$@"
1401     header="$1"
1402     condition="$2"
1403     shift 2
1404     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1405 }
1406
1407 require_pkg_config(){
1408     log require_pkg_config "$@"
1409     pkg_version="$2"
1410     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1411 }
1412
1413 hostcc_e(){
1414     eval printf '%s\\n' $HOSTCC_E
1415 }
1416
1417 hostcc_o(){
1418     eval printf '%s\\n' $HOSTCC_O
1419 }
1420
1421 check_host_cc(){
1422     log check_host_cc "$@"
1423     cat > $TMPC
1424     log_file $TMPC
1425     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1426 }
1427
1428 check_host_cpp(){
1429     log check_host_cpp "$@"
1430     cat > $TMPC
1431     log_file $TMPC
1432     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1433 }
1434
1435 check_host_cppflags(){
1436     log check_host_cppflags "$@"
1437     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1438 #include <stdlib.h>
1439 EOF
1440 }
1441
1442 check_host_cflags(){
1443     log check_host_cflags "$@"
1444     set -- $($host_cflags_filter "$@")
1445     check_host_cc "$@" <<EOF && append host_cflags "$@"
1446 int x;
1447 EOF
1448 }
1449
1450 check_host_cpp_condition(){
1451     log check_host_cpp_condition "$@"
1452     header=$1
1453     condition=$2
1454     shift 2
1455     check_host_cpp "$@" <<EOF
1456 #include <$header>
1457 #if !($condition)
1458 #error "unsatisfied condition: $condition"
1459 #endif
1460 EOF
1461 }
1462
1463 cp_if_changed(){
1464     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1465     mkdir -p "$(dirname $2)"
1466     cp -f "$1" "$2"
1467 }
1468
1469 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1470 # system-dependent things.
1471
1472 AVCODEC_COMPONENTS="
1473     bsfs
1474     decoders
1475     encoders
1476     hwaccels
1477     parsers
1478 "
1479
1480 AVDEVICE_COMPONENTS="
1481     indevs
1482     outdevs
1483 "
1484
1485 AVFILTER_COMPONENTS="
1486     filters
1487 "
1488
1489 AVFORMAT_COMPONENTS="
1490     demuxers
1491     muxers
1492     protocols
1493 "
1494
1495 COMPONENT_LIST="
1496     $AVCODEC_COMPONENTS
1497     $AVDEVICE_COMPONENTS
1498     $AVFILTER_COMPONENTS
1499     $AVFORMAT_COMPONENTS
1500 "
1501
1502 EXAMPLE_LIST="
1503     avio_dir_cmd_example
1504     avio_reading_example
1505     decode_audio_example
1506     decode_video_example
1507     demuxing_decoding_example
1508     encode_audio_example
1509     encode_video_example
1510     extract_mvs_example
1511     filter_audio_example
1512     filtering_audio_example
1513     filtering_video_example
1514     http_multiclient_example
1515     hw_decode_example
1516     metadata_example
1517     muxing_example
1518     qsvdec_example
1519     remuxing_example
1520     resampling_audio_example
1521     scaling_video_example
1522     transcode_aac_example
1523     transcoding_example
1524 "
1525
1526 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1527     alsa
1528     appkit
1529     avfoundation
1530     bzlib
1531     coreimage
1532     iconv
1533     libxcb
1534     libxcb_shm
1535     libxcb_shape
1536     libxcb_xfixes
1537     lzma
1538     schannel
1539     sdl2
1540     securetransport
1541     sndio
1542     xlib
1543     zlib
1544 "
1545
1546 EXTERNAL_LIBRARY_GPL_LIST="
1547     avisynth
1548     frei0r
1549     libcdio
1550     librubberband
1551     libvidstab
1552     libx264
1553     libx265
1554     libxavs
1555     libxvid
1556 "
1557
1558 EXTERNAL_LIBRARY_NONFREE_LIST="
1559     decklink
1560     libndi_newtek
1561     libfdk_aac
1562     openssl
1563 "
1564
1565 EXTERNAL_LIBRARY_VERSION3_LIST="
1566     gmp
1567     libopencore_amrnb
1568     libopencore_amrwb
1569     libvmaf
1570     libvo_amrwbenc
1571     rkmpp
1572 "
1573
1574 EXTERNAL_LIBRARY_GPLV3_LIST="
1575     libsmbclient
1576 "
1577
1578 EXTERNAL_LIBRARY_LIST="
1579     $EXTERNAL_LIBRARY_GPL_LIST
1580     $EXTERNAL_LIBRARY_NONFREE_LIST
1581     $EXTERNAL_LIBRARY_VERSION3_LIST
1582     $EXTERNAL_LIBRARY_GPLV3_LIST
1583     chromaprint
1584     gcrypt
1585     gnutls
1586     jni
1587     ladspa
1588     libass
1589     libbluray
1590     libbs2b
1591     libcaca
1592     libcelt
1593     libdc1394
1594     libdrm
1595     libflite
1596     libfontconfig
1597     libfreetype
1598     libfribidi
1599     libgme
1600     libgsm
1601     libiec61883
1602     libilbc
1603     libjack
1604     libkvazaar
1605     libmodplug
1606     libmp3lame
1607     libmysofa
1608     libopencv
1609     libopenh264
1610     libopenjpeg
1611     libopenmpt
1612     libopus
1613     libpulse
1614     librsvg
1615     librtmp
1616     libshine
1617     libsmbclient
1618     libsnappy
1619     libsoxr
1620     libspeex
1621     libssh
1622     libtesseract
1623     libtheora
1624     libtwolame
1625     libv4l2
1626     libvorbis
1627     libvpx
1628     libwavpack
1629     libwebp
1630     libxml2
1631     libzimg
1632     libzmq
1633     libzvbi
1634     mediacodec
1635     openal
1636     opencl
1637     opengl
1638 "
1639
1640 HWACCEL_AUTODETECT_LIBRARY_LIST="
1641     audiotoolbox
1642     crystalhd
1643     cuda
1644     cuvid
1645     d3d11va
1646     dxva2
1647     nvdec
1648     nvenc
1649     vaapi
1650     vdpau
1651     videotoolbox
1652     v4l2_m2m
1653     xvmc
1654 "
1655
1656 # catchall list of things that require external libs to link
1657 EXTRALIBS_LIST="
1658     cpu_init
1659     cws2fws
1660 "
1661
1662 HWACCEL_LIBRARY_NONFREE_LIST="
1663     cuda_sdk
1664     libnpp
1665 "
1666
1667 HWACCEL_LIBRARY_LIST="
1668     $HWACCEL_LIBRARY_NONFREE_LIST
1669     libmfx
1670     mmal
1671     omx
1672 "
1673
1674 DOCUMENT_LIST="
1675     doc
1676     htmlpages
1677     manpages
1678     podpages
1679     txtpages
1680 "
1681
1682 FEATURE_LIST="
1683     ftrapv
1684     gray
1685     hardcoded_tables
1686     omx_rpi
1687     runtime_cpudetect
1688     safe_bitstream_reader
1689     shared
1690     small
1691     static
1692     swscale_alpha
1693 "
1694
1695 LIBRARY_LIST="
1696     avcodec
1697     avdevice
1698     avfilter
1699     avformat
1700     avresample
1701     avutil
1702     postproc
1703     swresample
1704     swscale
1705 "
1706
1707 LICENSE_LIST="
1708     gpl
1709     nonfree
1710     version3
1711 "
1712
1713 PROGRAM_LIST="
1714     ffplay
1715     ffprobe
1716     ffserver
1717     ffmpeg
1718 "
1719
1720 SUBSYSTEM_LIST="
1721     dct
1722     dwt
1723     error_resilience
1724     faan
1725     fast_unaligned
1726     fft
1727     lsp
1728     lzo
1729     mdct
1730     pixelutils
1731     network
1732     rdft
1733 "
1734
1735 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1736 CONFIG_LIST="
1737     $DOCUMENT_LIST
1738     $EXAMPLE_LIST
1739     $EXTERNAL_LIBRARY_LIST
1740     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1741     $HWACCEL_LIBRARY_LIST
1742     $HWACCEL_AUTODETECT_LIBRARY_LIST
1743     $FEATURE_LIST
1744     $LICENSE_LIST
1745     $LIBRARY_LIST
1746     $PROGRAM_LIST
1747     $SUBSYSTEM_LIST
1748     autodetect
1749     fontconfig
1750     linux_perf
1751     memory_poisoning
1752     neon_clobber_test
1753     ossfuzz
1754     pic
1755     thumb
1756     valgrind_backtrace
1757     xmm_clobber_test
1758     $COMPONENT_LIST
1759 "
1760
1761 THREADS_LIST="
1762     pthreads
1763     os2threads
1764     w32threads
1765 "
1766
1767 ATOMICS_LIST="
1768     atomics_gcc
1769     atomics_suncc
1770     atomics_win32
1771 "
1772
1773 AUTODETECT_LIBS="
1774     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1775     $HWACCEL_AUTODETECT_LIBRARY_LIST
1776     $THREADS_LIST
1777 "
1778
1779 ARCH_LIST="
1780     aarch64
1781     alpha
1782     arm
1783     avr32
1784     avr32_ap
1785     avr32_uc
1786     bfin
1787     ia64
1788     m68k
1789     mips
1790     mips64
1791     parisc
1792     ppc
1793     ppc64
1794     s390
1795     sh4
1796     sparc
1797     sparc64
1798     tilegx
1799     tilepro
1800     tomi
1801     x86
1802     x86_32
1803     x86_64
1804 "
1805
1806 ARCH_EXT_LIST_ARM="
1807     armv5te
1808     armv6
1809     armv6t2
1810     armv8
1811     neon
1812     vfp
1813     vfpv3
1814     setend
1815 "
1816
1817 ARCH_EXT_LIST_MIPS="
1818     mipsfpu
1819     mips32r2
1820     mips32r5
1821     mips64r2
1822     mips32r6
1823     mips64r6
1824     mipsdsp
1825     mipsdspr2
1826     msa
1827 "
1828
1829 ARCH_EXT_LIST_LOONGSON="
1830     loongson2
1831     loongson3
1832     mmi
1833 "
1834
1835 ARCH_EXT_LIST_X86_SIMD="
1836     aesni
1837     amd3dnow
1838     amd3dnowext
1839     avx
1840     avx2
1841     fma3
1842     fma4
1843     mmx
1844     mmxext
1845     sse
1846     sse2
1847     sse3
1848     sse4
1849     sse42
1850     ssse3
1851     xop
1852 "
1853
1854 ARCH_EXT_LIST_PPC="
1855     altivec
1856     dcbzl
1857     ldbrx
1858     power8
1859     ppc4xx
1860     vsx
1861 "
1862
1863 ARCH_EXT_LIST_X86="
1864     $ARCH_EXT_LIST_X86_SIMD
1865     cpunop
1866     i686
1867 "
1868
1869 ARCH_EXT_LIST="
1870     $ARCH_EXT_LIST_ARM
1871     $ARCH_EXT_LIST_PPC
1872     $ARCH_EXT_LIST_X86
1873     $ARCH_EXT_LIST_MIPS
1874     $ARCH_EXT_LIST_LOONGSON
1875 "
1876
1877 ARCH_FEATURES="
1878     aligned_stack
1879     fast_64bit
1880     fast_clz
1881     fast_cmov
1882     local_aligned
1883     simd_align_16
1884     simd_align_32
1885 "
1886
1887 BUILTIN_LIST="
1888     atomic_cas_ptr
1889     machine_rw_barrier
1890     MemoryBarrier
1891     mm_empty
1892     rdtsc
1893     sarestart
1894     sem_timedwait
1895     sync_val_compare_and_swap
1896 "
1897 HAVE_LIST_CMDLINE="
1898     inline_asm
1899     symver
1900     x86asm
1901 "
1902
1903 HAVE_LIST_PUB="
1904     bigendian
1905     fast_unaligned
1906 "
1907
1908 HEADERS_LIST="
1909     arpa_inet_h
1910     asm_types_h
1911     cdio_paranoia_h
1912     cdio_paranoia_paranoia_h
1913     cuda_h
1914     dispatch_dispatch_h
1915     dev_bktr_ioctl_bt848_h
1916     dev_bktr_ioctl_meteor_h
1917     dev_ic_bt8xx_h
1918     dev_video_bktr_ioctl_bt848_h
1919     dev_video_meteor_ioctl_meteor_h
1920     direct_h
1921     dirent_h
1922     dxgidebug_h
1923     dxva_h
1924     ES2_gl_h
1925     gsm_h
1926     io_h
1927     machine_ioctl_bt848_h
1928     machine_ioctl_meteor_h
1929     malloc_h
1930     opencv2_core_core_c_h
1931     OpenGL_gl3_h
1932     poll_h
1933     sys_param_h
1934     sys_resource_h
1935     sys_select_h
1936     sys_soundcard_h
1937     sys_time_h
1938     sys_un_h
1939     sys_videoio_h
1940     termios_h
1941     udplite_h
1942     unistd_h
1943     valgrind_valgrind_h
1944     windows_h
1945     winsock2_h
1946 "
1947
1948 INTRINSICS_LIST="
1949     intrinsics_neon
1950 "
1951
1952 COMPLEX_FUNCS="
1953     cabs
1954     cexp
1955 "
1956
1957 MATH_FUNCS="
1958     atanf
1959     atan2f
1960     cbrt
1961     cbrtf
1962     copysign
1963     cosf
1964     erf
1965     exp2
1966     exp2f
1967     expf
1968     hypot
1969     isfinite
1970     isinf
1971     isnan
1972     ldexpf
1973     llrint
1974     llrintf
1975     log2
1976     log2f
1977     log10f
1978     lrint
1979     lrintf
1980     powf
1981     rint
1982     round
1983     roundf
1984     sinf
1985     trunc
1986     truncf
1987 "
1988
1989 SYSTEM_FEATURES="
1990     atomics_native
1991     dos_paths
1992     libc_msvcrt
1993     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1994     section_data_rel_ro
1995     threads
1996     uwp
1997     winrt
1998 "
1999
2000 SYSTEM_FUNCS="
2001     access
2002     aligned_malloc
2003     arc4random
2004     clock_gettime
2005     closesocket
2006     CommandLineToArgvW
2007     fcntl
2008     getaddrinfo
2009     gethrtime
2010     getopt
2011     GetProcessAffinityMask
2012     GetProcessMemoryInfo
2013     GetProcessTimes
2014     getrusage
2015     GetSystemTimeAsFileTime
2016     gettimeofday
2017     glob
2018     glXGetProcAddress
2019     gmtime_r
2020     inet_aton
2021     isatty
2022     kbhit
2023     localtime_r
2024     lstat
2025     lzo1x_999_compress
2026     mach_absolute_time
2027     MapViewOfFile
2028     memalign
2029     mkstemp
2030     mmap
2031     mprotect
2032     nanosleep
2033     PeekNamedPipe
2034     posix_memalign
2035     pthread_cancel
2036     sched_getaffinity
2037     SecItemImport
2038     SetConsoleTextAttribute
2039     SetConsoleCtrlHandler
2040     setmode
2041     setrlimit
2042     Sleep
2043     strerror_r
2044     sysconf
2045     sysctl
2046     usleep
2047     UTGetOSTypeFromString
2048     VirtualAlloc
2049     wglGetProcAddress
2050 "
2051
2052 SYSTEM_LIBRARIES="
2053     vaapi_drm
2054     vaapi_x11
2055     vdpau_x11
2056     wincrypt
2057 "
2058
2059 TOOLCHAIN_FEATURES="
2060     as_arch_directive
2061     as_fpu_directive
2062     as_func
2063     as_object_arch
2064     asm_mod_q
2065     blocks_extension
2066     ebp_available
2067     ebx_available
2068     gnu_as
2069     gnu_windres
2070     ibm_asm
2071     inline_asm_direct_symbol_refs
2072     inline_asm_labels
2073     inline_asm_nonlocal_labels
2074     pragma_deprecated
2075     rsync_contimeout
2076     symver_asm_label
2077     symver_gnu_asm
2078     vfp_args
2079     xform_asm
2080     xmm_clobbers
2081 "
2082
2083 TYPES_LIST="
2084     CONDITION_VARIABLE_Ptr
2085     kCMVideoCodecType_HEVC
2086     socklen_t
2087     struct_addrinfo
2088     struct_group_source_req
2089     struct_ip_mreq_source
2090     struct_ipv6_mreq
2091     struct_msghdr_msg_flags
2092     struct_pollfd
2093     struct_rusage_ru_maxrss
2094     struct_sctp_event_subscribe
2095     struct_sockaddr_in6
2096     struct_sockaddr_sa_len
2097     struct_sockaddr_storage
2098     struct_stat_st_mtim_tv_nsec
2099     struct_v4l2_frmivalenum_discrete
2100 "
2101
2102 HAVE_LIST="
2103     $ARCH_EXT_LIST
2104     $(add_suffix _external $ARCH_EXT_LIST)
2105     $(add_suffix _inline   $ARCH_EXT_LIST)
2106     $ARCH_FEATURES
2107     $ATOMICS_LIST
2108     $BUILTIN_LIST
2109     $COMPLEX_FUNCS
2110     $HAVE_LIST_CMDLINE
2111     $HAVE_LIST_PUB
2112     $HEADERS_LIST
2113     $INTRINSICS_LIST
2114     $MATH_FUNCS
2115     $SYSTEM_FEATURES
2116     $SYSTEM_FUNCS
2117     $SYSTEM_LIBRARIES
2118     $THREADS_LIST
2119     $TOOLCHAIN_FEATURES
2120     $TYPES_LIST
2121     makeinfo
2122     makeinfo_html
2123     perl
2124     pod2man
2125     texi2html
2126 "
2127
2128 # options emitted with CONFIG_ prefix but not available on the command line
2129 CONFIG_EXTRA="
2130     aandcttables
2131     ac3dsp
2132     adts_header
2133     audio_frame_queue
2134     audiodsp
2135     blockdsp
2136     bswapdsp
2137     cabac
2138     cbs
2139     cbs_h264
2140     cbs_h265
2141     cbs_mpeg2
2142     dirac_parse
2143     dvprofile
2144     exif
2145     faandct
2146     faanidct
2147     fdctdsp
2148     flacdsp
2149     fmtconvert
2150     frame_thread_encoder
2151     g722dsp
2152     golomb
2153     gplv3
2154     h263dsp
2155     h264chroma
2156     h264dsp
2157     h264parse
2158     h264pred
2159     h264qpel
2160     hevcparse
2161     hpeldsp
2162     huffman
2163     huffyuvdsp
2164     huffyuvencdsp
2165     idctdsp
2166     iirfilter
2167     mdct15
2168     intrax8
2169     iso_media
2170     ividsp
2171     jpegtables
2172     lgplv3
2173     libx262
2174     llauddsp
2175     llviddsp
2176     llvidencdsp
2177     lpc
2178     lzf
2179     me_cmp
2180     mpeg_er
2181     mpegaudio
2182     mpegaudiodsp
2183     mpegaudioheader
2184     mpegvideo
2185     mpegvideoenc
2186     mss34dsp
2187     pixblockdsp
2188     qpeldsp
2189     qsv
2190     qsvdec
2191     qsvenc
2192     qsvvpp
2193     rangecoder
2194     riffdec
2195     riffenc
2196     rtpdec
2197     rtpenc_chain
2198     rv34dsp
2199     sinewin
2200     snappy
2201     srtp
2202     startcode
2203     texturedsp
2204     texturedspenc
2205     tpeldsp
2206     vaapi_1
2207     vaapi_encode
2208     vc1dsp
2209     videodsp
2210     vp3dsp
2211     vp56dsp
2212     vp8dsp
2213     wma_freqs
2214     wmv2dsp
2215 "
2216
2217 CMDLINE_SELECT="
2218     $ARCH_EXT_LIST
2219     $CONFIG_LIST
2220     $HAVE_LIST_CMDLINE
2221     $THREADS_LIST
2222     asm
2223     cross_compile
2224     debug
2225     extra_warnings
2226     logging
2227     lto
2228     optimizations
2229     rpath
2230     stripping
2231 "
2232
2233 PATHS_LIST="
2234     bindir
2235     datadir
2236     docdir
2237     incdir
2238     libdir
2239     mandir
2240     pkgconfigdir
2241     prefix
2242     shlibdir
2243     install_name_dir
2244 "
2245
2246 CMDLINE_SET="
2247     $PATHS_LIST
2248     ar
2249     arch
2250     as
2251     assert_level
2252     build_suffix
2253     cc
2254     objcc
2255     cpu
2256     cross_prefix
2257     custom_allocator
2258     cxx
2259     dep_cc
2260     doxygen
2261     env
2262     extra_version
2263     gas
2264     host_cc
2265     host_cflags
2266     host_extralibs
2267     host_ld
2268     host_ldflags
2269     host_os
2270     ignore_tests
2271     install
2272     ld
2273     ln_s
2274     logfile
2275     malloc_prefix
2276     nm
2277     optflags
2278     nvccflags
2279     pkg_config
2280     pkg_config_flags
2281     progs_suffix
2282     random_seed
2283     ranlib
2284     samples
2285     strip
2286     sws_max_filter_size
2287     sysinclude
2288     sysroot
2289     target_exec
2290     target_os
2291     target_path
2292     target_samples
2293     tempprefix
2294     toolchain
2295     valgrind
2296     x86asmexe
2297 "
2298
2299 CMDLINE_APPEND="
2300     extra_cflags
2301     extra_cxxflags
2302     extra_objcflags
2303     host_cppflags
2304 "
2305
2306 # code dependency declarations
2307
2308 # architecture extensions
2309
2310 armv5te_deps="arm"
2311 armv6_deps="arm"
2312 armv6t2_deps="arm"
2313 armv8_deps="aarch64"
2314 neon_deps_any="aarch64 arm"
2315 intrinsics_neon_deps="neon"
2316 vfp_deps_any="aarch64 arm"
2317 vfpv3_deps="vfp"
2318 setend_deps="arm"
2319
2320 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2321
2322 altivec_deps="ppc"
2323 dcbzl_deps="ppc"
2324 ldbrx_deps="ppc"
2325 ppc4xx_deps="ppc"
2326 vsx_deps="altivec"
2327 power8_deps="vsx"
2328
2329 loongson2_deps="mips"
2330 loongson3_deps="mips"
2331 mips32r2_deps="mips"
2332 mips32r5_deps="mips"
2333 mips32r6_deps="mips"
2334 mips64r2_deps="mips"
2335 mips64r6_deps="mips"
2336 mipsfpu_deps="mips"
2337 mipsdsp_deps="mips"
2338 mipsdspr2_deps="mips"
2339 mmi_deps="mips"
2340 msa_deps="mipsfpu"
2341
2342 cpunop_deps="i686"
2343 x86_64_select="i686"
2344 x86_64_suggest="fast_cmov"
2345
2346 amd3dnow_deps="mmx"
2347 amd3dnowext_deps="amd3dnow"
2348 i686_deps="x86"
2349 mmx_deps="x86"
2350 mmxext_deps="mmx"
2351 sse_deps="mmxext"
2352 sse2_deps="sse"
2353 sse3_deps="sse2"
2354 ssse3_deps="sse3"
2355 sse4_deps="ssse3"
2356 sse42_deps="sse4"
2357 aesni_deps="sse42"
2358 avx_deps="sse42"
2359 xop_deps="avx"
2360 fma3_deps="avx"
2361 fma4_deps="avx"
2362 avx2_deps="avx"
2363
2364 mmx_external_deps="x86asm"
2365 mmx_inline_deps="inline_asm x86"
2366 mmx_suggest="mmx_external mmx_inline"
2367
2368 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2369     eval dep=\$${ext}_deps
2370     eval ${ext}_external_deps='"${dep}_external"'
2371     eval ${ext}_inline_deps='"${dep}_inline"'
2372     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2373 done
2374
2375 aligned_stack_if_any="aarch64 ppc x86"
2376 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2377 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2378 fast_unaligned_if_any="aarch64 ppc x86"
2379 simd_align_16_if_any="altivec neon sse"
2380 simd_align_32_if_any="avx"
2381
2382 # system capabilities
2383 symver_if_any="symver_asm_label symver_gnu_asm"
2384 valgrind_backtrace_conflict="optimizations"
2385 valgrind_backtrace_deps="valgrind_valgrind_h"
2386
2387 # threading support
2388 atomics_gcc_if="sync_val_compare_and_swap"
2389 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2390 atomics_win32_if="MemoryBarrier"
2391 atomics_native_if_any="$ATOMICS_LIST"
2392 w32threads_deps="atomics_native"
2393 threads_if_any="$THREADS_LIST"
2394
2395 # subsystems
2396 cbs_h264_select="cbs golomb"
2397 cbs_h265_select="cbs golomb"
2398 cbs_mpeg2_select="cbs"
2399 dct_select="rdft"
2400 dirac_parse_select="golomb"
2401 error_resilience_select="me_cmp"
2402 faandct_deps="faan"
2403 faandct_select="fdctdsp"
2404 faanidct_deps="faan"
2405 faanidct_select="idctdsp"
2406 h264dsp_select="startcode"
2407 hevcparse_select="golomb"
2408 frame_thread_encoder_deps="encoders threads"
2409 intrax8_select="blockdsp idctdsp"
2410 mdct_select="fft"
2411 mdct15_select="fft"
2412 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2413 mpeg_er_select="error_resilience"
2414 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2415 mpegaudiodsp_select="dct"
2416 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2417 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2418 vc1dsp_select="h264chroma qpeldsp startcode"
2419 rdft_select="fft"
2420
2421 # decoders / encoders
2422 aac_decoder_select="adts_header mdct15 mdct sinewin"
2423 aac_fixed_decoder_select="mdct sinewin"
2424 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2425 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2426 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2427 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2428 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2429 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2430 adpcm_g722_decoder_select="g722dsp"
2431 adpcm_g722_encoder_select="g722dsp"
2432 aic_decoder_select="golomb idctdsp"
2433 alac_encoder_select="lpc"
2434 als_decoder_select="bswapdsp"
2435 amrnb_decoder_select="lsp"
2436 amrwb_decoder_select="lsp"
2437 amv_decoder_select="sp5x_decoder exif"
2438 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2439 ape_decoder_select="bswapdsp llauddsp"
2440 apng_decoder_select="zlib"
2441 apng_encoder_select="llvidencdsp zlib"
2442 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2443 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2444 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2445 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2446 atrac1_decoder_select="mdct sinewin"
2447 atrac3_decoder_select="mdct"
2448 atrac3p_decoder_select="mdct sinewin"
2449 avrn_decoder_select="exif jpegtables"
2450 bink_decoder_select="blockdsp hpeldsp"
2451 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2452 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2453 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2454 clearvideo_decoder_select="idctdsp"
2455 cllc_decoder_select="bswapdsp"
2456 comfortnoise_encoder_select="lpc"
2457 cook_decoder_select="audiodsp mdct sinewin"
2458 cscd_decoder_select="lzo"
2459 cscd_decoder_suggest="zlib"
2460 dca_decoder_select="mdct"
2461 dds_decoder_select="texturedsp"
2462 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2463 dnxhd_decoder_select="blockdsp idctdsp"
2464 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2465 dolby_e_decoder_select="mdct"
2466 dvvideo_decoder_select="dvprofile idctdsp"
2467 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2468 dxa_decoder_select="zlib"
2469 dxv_decoder_select="lzf texturedsp"
2470 eac3_decoder_select="ac3_decoder"
2471 eac3_encoder_select="ac3_encoder"
2472 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2473 eatgq_decoder_select="aandcttables"
2474 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2475 exr_decoder_select="zlib"
2476 ffv1_decoder_select="rangecoder"
2477 ffv1_encoder_select="rangecoder"
2478 ffvhuff_decoder_select="huffyuv_decoder"
2479 ffvhuff_encoder_select="huffyuv_encoder"
2480 fic_decoder_select="golomb"
2481 flac_decoder_select="flacdsp"
2482 flac_encoder_select="bswapdsp flacdsp lpc"
2483 flashsv2_decoder_select="zlib"
2484 flashsv2_encoder_select="zlib"
2485 flashsv_decoder_select="zlib"
2486 flashsv_encoder_select="zlib"
2487 flv_decoder_select="h263_decoder"
2488 flv_encoder_select="h263_encoder"
2489 fourxm_decoder_select="blockdsp bswapdsp"
2490 fraps_decoder_select="bswapdsp huffman"
2491 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2492 g729_decoder_select="audiodsp"
2493 h261_decoder_select="mpegvideo"
2494 h261_encoder_select="aandcttables mpegvideoenc"
2495 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2496 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2497 h263i_decoder_select="h263_decoder"
2498 h263p_decoder_select="h263_decoder"
2499 h263p_encoder_select="h263_encoder"
2500 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2501 h264_decoder_suggest="error_resilience"
2502 hap_decoder_select="snappy texturedsp"
2503 hap_encoder_deps="libsnappy"
2504 hap_encoder_select="texturedspenc"
2505 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2506 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2507 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2508 iac_decoder_select="imc_decoder"
2509 imc_decoder_select="bswapdsp fft mdct sinewin"
2510 indeo3_decoder_select="hpeldsp"
2511 indeo4_decoder_select="ividsp"
2512 indeo5_decoder_select="ividsp"
2513 interplay_video_decoder_select="hpeldsp"
2514 jpegls_decoder_select="mjpeg_decoder"
2515 jv_decoder_select="blockdsp"
2516 lagarith_decoder_select="llviddsp"
2517 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2518 magicyuv_decoder_select="llviddsp"
2519 magicyuv_encoder_select="llvidencdsp"
2520 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2521 metasound_decoder_select="lsp mdct sinewin"
2522 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2523 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2524 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2525 mjpegb_decoder_select="mjpeg_decoder"
2526 mlp_decoder_select="mlp_parser"
2527 mlp_encoder_select="lpc"
2528 motionpixels_decoder_select="bswapdsp"
2529 mp1_decoder_select="mpegaudio"
2530 mp1float_decoder_select="mpegaudio"
2531 mp2_decoder_select="mpegaudio"
2532 mp2float_decoder_select="mpegaudio"
2533 mp3_decoder_select="mpegaudio"
2534 mp3adu_decoder_select="mpegaudio"
2535 mp3adufloat_decoder_select="mpegaudio"
2536 mp3float_decoder_select="mpegaudio"
2537 mp3on4_decoder_select="mpegaudio"
2538 mp3on4float_decoder_select="mpegaudio"
2539 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2540 mpc8_decoder_select="mpegaudiodsp"
2541 mpegvideo_decoder_select="mpegvideo"
2542 mpeg1video_decoder_select="mpegvideo"
2543 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2544 mpeg2video_decoder_select="mpegvideo"
2545 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2546 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2547 mpeg4_encoder_select="h263_encoder"
2548 msa1_decoder_select="mss34dsp"
2549 mscc_decoder_select="zlib"
2550 msmpeg4v1_decoder_select="h263_decoder"
2551 msmpeg4v2_decoder_select="h263_decoder"
2552 msmpeg4v2_encoder_select="h263_encoder"
2553 msmpeg4v3_decoder_select="h263_decoder"
2554 msmpeg4v3_encoder_select="h263_encoder"
2555 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2556 mts2_decoder_select="mss34dsp"
2557 mxpeg_decoder_select="mjpeg_decoder"
2558 nellymoser_decoder_select="mdct sinewin"
2559 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2560 nuv_decoder_select="idctdsp lzo"
2561 on2avc_decoder_select="mdct"
2562 opus_decoder_deps="swresample"
2563 opus_decoder_select="mdct15"
2564 opus_encoder_select="audio_frame_queue mdct15"
2565 png_decoder_select="zlib"
2566 png_encoder_select="llvidencdsp zlib"
2567 prores_decoder_select="blockdsp idctdsp"
2568 prores_encoder_select="fdctdsp"
2569 qcelp_decoder_select="lsp"
2570 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2571 ra_144_decoder_select="audiodsp"
2572 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2573 ralf_decoder_select="golomb"
2574 rawvideo_decoder_select="bswapdsp"
2575 rscc_decoder_select="zlib"
2576 rtjpeg_decoder_select="me_cmp"
2577 rv10_decoder_select="h263_decoder"
2578 rv10_encoder_select="h263_encoder"
2579 rv20_decoder_select="h263_decoder"
2580 rv20_encoder_select="h263_encoder"
2581 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2582 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2583 screenpresso_decoder_select="zlib"
2584 shorten_decoder_select="bswapdsp"
2585 sipr_decoder_select="lsp"
2586 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2587 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2588 sonic_decoder_select="golomb rangecoder"
2589 sonic_encoder_select="golomb rangecoder"
2590 sonic_ls_encoder_select="golomb rangecoder"
2591 sp5x_decoder_select="mjpeg_decoder"
2592 srgc_decoder_select="zlib"
2593 svq1_decoder_select="hpeldsp"
2594 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2595 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2596 svq3_decoder_suggest="zlib"
2597 tak_decoder_select="audiodsp"
2598 tdsc_decoder_select="zlib mjpeg_decoder"
2599 theora_decoder_select="vp3_decoder"
2600 thp_decoder_select="mjpeg_decoder"
2601 tiff_decoder_suggest="zlib lzma"
2602 tiff_encoder_suggest="zlib"
2603 truehd_decoder_select="mlp_parser"
2604 truehd_encoder_select="lpc"
2605 truemotion2_decoder_select="bswapdsp"
2606 truespeech_decoder_select="bswapdsp"
2607 tscc_decoder_select="zlib"
2608 twinvq_decoder_select="mdct lsp sinewin"
2609 txd_decoder_select="texturedsp"
2610 utvideo_decoder_select="bswapdsp llviddsp"
2611 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2612 vble_decoder_select="llviddsp"
2613 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2614 vc1image_decoder_select="vc1_decoder"
2615 vorbis_decoder_select="mdct"
2616 vorbis_encoder_select="mdct"
2617 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2618 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2619 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2620 vp6a_decoder_select="vp6_decoder"
2621 vp6f_decoder_select="vp6_decoder"
2622 vp7_decoder_select="h264pred videodsp vp8dsp"
2623 vp8_decoder_select="h264pred videodsp vp8dsp"
2624 vp9_decoder_select="videodsp vp9_parser"
2625 webp_decoder_select="vp8_decoder exif"
2626 wmalossless_decoder_select="llauddsp"
2627 wmapro_decoder_select="mdct sinewin wma_freqs"
2628 wmav1_decoder_select="mdct sinewin wma_freqs"
2629 wmav1_encoder_select="mdct sinewin wma_freqs"
2630 wmav2_decoder_select="mdct sinewin wma_freqs"
2631 wmav2_encoder_select="mdct sinewin wma_freqs"
2632 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2633 wmv1_decoder_select="h263_decoder"
2634 wmv1_encoder_select="h263_encoder"
2635 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2636 wmv2_encoder_select="h263_encoder wmv2dsp"
2637 wmv3_decoder_select="vc1_decoder"
2638 wmv3image_decoder_select="wmv3_decoder"
2639 xma1_decoder_select="wmapro_decoder"
2640 xma2_decoder_select="wmapro_decoder"
2641 zerocodec_decoder_select="zlib"
2642 zlib_decoder_select="zlib"
2643 zlib_encoder_select="zlib"
2644 zmbv_decoder_select="zlib"
2645 zmbv_encoder_select="zlib"
2646
2647 # hardware accelerators
2648 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2649 cuda_deps_any="libdl LoadLibrary"
2650 cuvid_deps="cuda"
2651 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2652 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2653 nvdec_deps="cuda"
2654 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2655 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2656 xvmc_deps="X11_extensions_XvMClib_h"
2657
2658 h263_vaapi_hwaccel_deps="vaapi"
2659 h263_vaapi_hwaccel_select="h263_decoder"
2660 h263_videotoolbox_hwaccel_deps="videotoolbox"
2661 h263_videotoolbox_hwaccel_select="h263_decoder"
2662 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2663 h264_d3d11va_hwaccel_deps="d3d11va"
2664 h264_d3d11va_hwaccel_select="h264_decoder"
2665 h264_d3d11va2_hwaccel_deps="d3d11va"
2666 h264_d3d11va2_hwaccel_select="h264_decoder"
2667 h264_dxva2_hwaccel_deps="dxva2"
2668 h264_dxva2_hwaccel_select="h264_decoder"
2669 h264_mediacodec_hwaccel_deps="mediacodec"
2670 h264_mmal_hwaccel_deps="mmal"
2671 h264_nvdec_hwaccel_deps="nvdec"
2672 h264_nvdec_hwaccel_select="h264_decoder"
2673 h264_qsv_hwaccel_deps="libmfx"
2674 h264_vaapi_hwaccel_deps="vaapi"
2675 h264_vaapi_hwaccel_select="h264_decoder"
2676 h264_vdpau_hwaccel_deps="vdpau"
2677 h264_vdpau_hwaccel_select="h264_decoder"
2678 h264_videotoolbox_hwaccel_deps="videotoolbox"
2679 h264_videotoolbox_hwaccel_select="h264_decoder"
2680 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2681 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2682 hevc_d3d11va_hwaccel_select="hevc_decoder"
2683 hevc_mediacodec_hwaccel_deps="mediacodec"
2684 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2685 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2686 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2687 hevc_dxva2_hwaccel_select="hevc_decoder"
2688 hevc_nvdec_hwaccel_deps="nvdec"
2689 hevc_nvdec_hwaccel_select="hevc_decoder"
2690 hevc_qsv_hwaccel_deps="libmfx"
2691 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2692 hevc_vaapi_hwaccel_select="hevc_decoder"
2693 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2694 hevc_vdpau_hwaccel_select="hevc_decoder"
2695 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2696 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2697 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2698 mpeg_xvmc_hwaccel_deps="xvmc"
2699 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2700 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2701 mpeg1_vdpau_hwaccel_deps="vdpau"
2702 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2703 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2704 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2705 mpeg1_xvmc_hwaccel_deps="xvmc"
2706 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2707 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2708 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2709 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2710 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2711 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2712 mpeg2_dxva2_hwaccel_deps="dxva2"
2713 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2714 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2715 mpeg2_mmal_hwaccel_deps="mmal"
2716 mpeg2_qsv_hwaccel_deps="libmfx"
2717 mpeg2_vaapi_hwaccel_deps="vaapi"
2718 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2719 mpeg2_vdpau_hwaccel_deps="vdpau"
2720 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2721 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2722 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_xvmc_hwaccel_deps="xvmc"
2724 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2725 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2726 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2727 mpeg4_mmal_hwaccel_deps="mmal"
2728 mpeg4_vaapi_hwaccel_deps="vaapi"
2729 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2730 mpeg4_vdpau_hwaccel_deps="vdpau"
2731 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2732 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2733 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2734 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2735 vc1_d3d11va_hwaccel_deps="d3d11va"
2736 vc1_d3d11va_hwaccel_select="vc1_decoder"
2737 vc1_d3d11va2_hwaccel_deps="d3d11va"
2738 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2739 vc1_dxva2_hwaccel_deps="dxva2"
2740 vc1_dxva2_hwaccel_select="vc1_decoder"
2741 vc1_mmal_hwaccel_deps="mmal"
2742 vc1_nvdec_hwaccel_deps="nvdec"
2743 vc1_nvdec_hwaccel_select="vc1_decoder"
2744 vc1_qsv_hwaccel_deps="libmfx"
2745 vc1_vaapi_hwaccel_deps="vaapi"
2746 vc1_vaapi_hwaccel_select="vc1_decoder"
2747 vc1_vdpau_hwaccel_deps="vdpau"
2748 vc1_vdpau_hwaccel_select="vc1_decoder"
2749 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2750 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2751 vp8_mediacodec_hwaccel_deps="mediacodec"
2752 vp8_qsv_hwaccel_deps="libmfx"
2753 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2754 vp9_d3d11va_hwaccel_select="vp9_decoder"
2755 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2756 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2757 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2758 vp9_dxva2_hwaccel_select="vp9_decoder"
2759 vp9_mediacodec_hwaccel_deps="mediacodec"
2760 vp9_nvdec_hwaccel_deps="nvdec"
2761 vp9_nvdec_hwaccel_select="vp9_decoder"
2762 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2763 vp9_vaapi_hwaccel_select="vp9_decoder"
2764 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2765 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2766 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2767 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2768 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2769 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2770
2771 # hardware-accelerated codecs
2772 omx_deps="libdl pthreads"
2773 omx_rpi_select="omx"
2774 qsv_deps="libmfx"
2775 qsvdec_select="qsv"
2776 qsvenc_select="qsv"
2777 qsvvpp_select="qsv"
2778 vaapi_encode_deps="vaapi"
2779 v4l2_m2m_deps_any="linux_videodev2_h"
2780
2781 hwupload_cuda_filter_deps="cuda"
2782 scale_npp_filter_deps="cuda libnpp"
2783 scale_cuda_filter_deps="cuda_sdk"
2784 thumbnail_cuda_filter_deps="cuda_sdk"
2785
2786 nvenc_deps="cuda"
2787 nvenc_deps_any="libdl LoadLibrary"
2788 nvenc_encoder_deps="nvenc"
2789
2790 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2791 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2792 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2793 h264_cuvid_decoder_deps="cuvid"
2794 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2795 h264_mediacodec_decoder_deps="mediacodec"
2796 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2797 h264_mmal_decoder_deps="mmal"
2798 h264_nvenc_encoder_deps="nvenc"
2799 h264_omx_encoder_deps="omx"
2800 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2801 h264_qsv_encoder_select="qsvenc"
2802 h264_rkmpp_decoder_deps="rkmpp"
2803 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2804 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2805 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2806 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2807 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2808 hevc_cuvid_decoder_deps="cuvid"
2809 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2810 hevc_mediacodec_decoder_deps="mediacodec"
2811 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2812 hevc_nvenc_encoder_deps="nvenc"
2813 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2814 hevc_qsv_encoder_select="hevcparse qsvenc"
2815 hevc_rkmpp_decoder_deps="rkmpp"
2816 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2817 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2818 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2819 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2820 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2821 mjpeg_cuvid_decoder_deps="cuvid"
2822 mjpeg_qsv_encoder_deps="libmfx"
2823 mjpeg_qsv_encoder_select="qsvenc"
2824 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2825 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2826 mpeg1_cuvid_decoder_deps="cuvid"
2827 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2828 mpeg2_crystalhd_decoder_select="crystalhd"
2829 mpeg2_cuvid_decoder_deps="cuvid"
2830 mpeg2_mmal_decoder_deps="mmal"
2831 mpeg2_mediacodec_decoder_deps="mediacodec"
2832 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2833 mpeg2_qsv_encoder_select="qsvenc"
2834 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2835 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2836 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2837 mpeg4_crystalhd_decoder_select="crystalhd"
2838 mpeg4_cuvid_decoder_deps="cuvid"
2839 mpeg4_mediacodec_decoder_deps="mediacodec"
2840 mpeg4_mmal_decoder_deps="mmal"
2841 mpeg4_omx_encoder_deps="omx"
2842 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2843 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2844 msmpeg4_crystalhd_decoder_select="crystalhd"
2845 nvenc_h264_encoder_select="h264_nvenc_encoder"
2846 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2847 vc1_crystalhd_decoder_select="crystalhd"
2848 vc1_cuvid_decoder_deps="cuvid"
2849 vc1_mmal_decoder_deps="mmal"
2850 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2851 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2852 vp8_cuvid_decoder_deps="cuvid"
2853 vp8_mediacodec_decoder_deps="mediacodec"
2854 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2855 vp8_rkmpp_decoder_deps="rkmpp"
2856 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2857 vp8_vaapi_encoder_select="vaapi_encode"
2858 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2859 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2860 vp9_cuvid_decoder_deps="cuvid"
2861 vp9_mediacodec_decoder_deps="mediacodec"
2862 vp9_rkmpp_decoder_deps="rkmpp"
2863 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2864 vp9_vaapi_encoder_select="vaapi_encode"
2865 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2866 wmv3_crystalhd_decoder_select="crystalhd"
2867
2868 # parsers
2869 aac_parser_select="adts_header"
2870 h264_parser_select="golomb h264dsp h264parse"
2871 hevc_parser_select="hevcparse"
2872 mpegaudio_parser_select="mpegaudioheader"
2873 mpegvideo_parser_select="mpegvideo"
2874 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2875 vc1_parser_select="vc1dsp"
2876
2877 # bitstream_filters
2878 aac_adtstoasc_bsf_select="adts_header"
2879 h264_metadata_bsf_select="cbs_h264"
2880 h264_redundant_pps_bsf_select="cbs_h264"
2881 hevc_metadata_bsf_select="cbs_h265"
2882 mjpeg2jpeg_bsf_select="jpegtables"
2883 mpeg2_metadata_bsf_select="cbs_mpeg2"
2884 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2885
2886 # external libraries
2887 aac_at_decoder_deps="audiotoolbox"
2888 ac3_at_decoder_deps="audiotoolbox"
2889 ac3_at_decoder_select="ac3_parser"
2890 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2891 alac_at_decoder_deps="audiotoolbox"
2892 amr_nb_at_decoder_deps="audiotoolbox"
2893 avisynth_deps_any="libdl LoadLibrary"
2894 avisynth_demuxer_deps="avisynth"
2895 avisynth_demuxer_select="riffdec"
2896 eac3_at_decoder_deps="audiotoolbox"
2897 eac3_at_decoder_select="ac3_parser"
2898 gsm_ms_at_decoder_deps="audiotoolbox"
2899 ilbc_at_decoder_deps="audiotoolbox"
2900 mp1_at_decoder_deps="audiotoolbox"
2901 mp2_at_decoder_deps="audiotoolbox"
2902 mp3_at_decoder_deps="audiotoolbox"
2903 mp1_at_decoder_select="mpegaudioheader"
2904 mp2_at_decoder_select="mpegaudioheader"
2905 mp3_at_decoder_select="mpegaudioheader"
2906 pcm_alaw_at_decoder_deps="audiotoolbox"
2907 pcm_mulaw_at_decoder_deps="audiotoolbox"
2908 qdmc_at_decoder_deps="audiotoolbox"
2909 qdm2_at_decoder_deps="audiotoolbox"
2910 aac_at_encoder_deps="audiotoolbox"
2911 aac_at_encoder_select="audio_frame_queue"
2912 alac_at_encoder_deps="audiotoolbox"
2913 alac_at_encoder_select="audio_frame_queue"
2914 ilbc_at_encoder_deps="audiotoolbox"
2915 ilbc_at_encoder_select="audio_frame_queue"
2916 pcm_alaw_at_encoder_deps="audiotoolbox"
2917 pcm_alaw_at_encoder_select="audio_frame_queue"
2918 pcm_mulaw_at_encoder_deps="audiotoolbox"
2919 pcm_mulaw_at_encoder_select="audio_frame_queue"
2920 chromaprint_muxer_deps="chromaprint"
2921 h264_videotoolbox_encoder_deps="pthreads"
2922 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2923 hevc_videotoolbox_encoder_deps="pthreads"
2924 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2925 libcelt_decoder_deps="libcelt"
2926 libfdk_aac_decoder_deps="libfdk_aac"
2927 libfdk_aac_encoder_deps="libfdk_aac"
2928 libfdk_aac_encoder_select="audio_frame_queue"
2929 libgme_demuxer_deps="libgme"
2930 libgsm_decoder_deps="libgsm"
2931 libgsm_encoder_deps="libgsm"
2932 libgsm_ms_decoder_deps="libgsm"
2933 libgsm_ms_encoder_deps="libgsm"
2934 libilbc_decoder_deps="libilbc"
2935 libilbc_encoder_deps="libilbc"
2936 libkvazaar_encoder_deps="libkvazaar"
2937 libmodplug_demuxer_deps="libmodplug"
2938 libmp3lame_encoder_deps="libmp3lame"
2939 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2940 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2941 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2942 libopencore_amrnb_encoder_select="audio_frame_queue"
2943 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2944 libopenh264_decoder_deps="libopenh264"
2945 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2946 libopenh264_encoder_deps="libopenh264"
2947 libopenjpeg_decoder_deps="libopenjpeg"
2948 libopenjpeg_encoder_deps="libopenjpeg"
2949 libopenmpt_demuxer_deps="libopenmpt"
2950 libopus_decoder_deps="libopus"
2951 libopus_encoder_deps="libopus"
2952 libopus_encoder_select="audio_frame_queue"
2953 librsvg_decoder_deps="librsvg"
2954 libshine_encoder_deps="libshine"
2955 libshine_encoder_select="audio_frame_queue"
2956 libspeex_decoder_deps="libspeex"
2957 libspeex_encoder_deps="libspeex"
2958 libspeex_encoder_select="audio_frame_queue"
2959 libtheora_encoder_deps="libtheora"
2960 libtwolame_encoder_deps="libtwolame"
2961 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2962 libvorbis_decoder_deps="libvorbis"
2963 libvorbis_encoder_deps="libvorbis libvorbisenc"
2964 libvorbis_encoder_select="audio_frame_queue"
2965 libvpx_vp8_decoder_deps="libvpx"
2966 libvpx_vp8_encoder_deps="libvpx"
2967 libvpx_vp9_decoder_deps="libvpx"
2968 libvpx_vp9_encoder_deps="libvpx"
2969 libwavpack_encoder_deps="libwavpack"
2970 libwavpack_encoder_select="audio_frame_queue"
2971 libwebp_encoder_deps="libwebp"
2972 libwebp_anim_encoder_deps="libwebp"
2973 libx262_encoder_deps="libx262"
2974 libx264_encoder_deps="libx264"
2975 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2976 libx264rgb_encoder_select="libx264_encoder"
2977 libx265_encoder_deps="libx265"
2978 libxavs_encoder_deps="libxavs"
2979 libxvid_encoder_deps="libxvid"
2980 libzvbi_teletext_decoder_deps="libzvbi"
2981 videotoolbox_suggest="coreservices"
2982 videotoolbox_deps="corefoundation coremedia corevideo"
2983 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2984
2985 # demuxers / muxers
2986 ac3_demuxer_select="ac3_parser"
2987 aiff_muxer_select="iso_media"
2988 asf_demuxer_select="riffdec"
2989 asf_o_demuxer_select="riffdec"
2990 asf_muxer_select="riffenc"
2991 asf_stream_muxer_select="asf_muxer"
2992 avi_demuxer_select="iso_media riffdec exif"
2993 avi_muxer_select="riffenc"
2994 caf_demuxer_select="iso_media riffdec"
2995 caf_muxer_select="iso_media"
2996 dash_muxer_select="mp4_muxer"
2997 dash_demuxer_deps="libxml2"
2998 dirac_demuxer_select="dirac_parser"
2999 dts_demuxer_select="dca_parser"
3000 dtshd_demuxer_select="dca_parser"
3001 dv_demuxer_select="dvprofile"
3002 dv_muxer_select="dvprofile"
3003 dxa_demuxer_select="riffdec"
3004 eac3_demuxer_select="ac3_parser"
3005 f4v_muxer_select="mov_muxer"
3006 fifo_muxer_deps="threads"
3007 flac_demuxer_select="flac_parser"
3008 hds_muxer_select="flv_muxer"
3009 hls_muxer_select="mpegts_muxer"
3010 hls_muxer_suggest="gcrypt openssl"
3011 image2_alias_pix_demuxer_select="image2_demuxer"
3012 image2_brender_pix_demuxer_select="image2_demuxer"
3013 ipod_muxer_select="mov_muxer"
3014 ismv_muxer_select="mov_muxer"
3015 matroska_audio_muxer_select="matroska_muxer"
3016 matroska_demuxer_select="iso_media riffdec"
3017 matroska_demuxer_suggest="bzlib lzo zlib"
3018 matroska_muxer_select="iso_media riffenc"
3019 mmf_muxer_select="riffenc"
3020 mov_demuxer_select="iso_media riffdec"
3021 mov_demuxer_suggest="zlib"
3022 mov_muxer_select="iso_media riffenc rtpenc_chain"
3023 mp3_demuxer_select="mpegaudio_parser"
3024 mp3_muxer_select="mpegaudioheader"
3025 mp4_muxer_select="mov_muxer"
3026 mpegts_demuxer_select="iso_media"
3027 mpegts_muxer_select="adts_muxer latm_muxer"
3028 mpegtsraw_demuxer_select="mpegts_demuxer"
3029 mxf_d10_muxer_select="mxf_muxer"
3030 mxf_opatom_muxer_select="mxf_muxer"
3031 nut_muxer_select="riffenc"
3032 nuv_demuxer_select="riffdec"
3033 oga_muxer_select="ogg_muxer"
3034 ogg_demuxer_select="dirac_parse"
3035 ogv_muxer_select="ogg_muxer"
3036 opus_muxer_select="ogg_muxer"
3037 psp_muxer_select="mov_muxer"
3038 rtp_demuxer_select="sdp_demuxer"
3039 rtp_muxer_select="golomb"
3040 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3041 rtsp_demuxer_select="http_protocol rtpdec"
3042 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3043 sap_demuxer_select="sdp_demuxer"
3044 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3045 sdp_demuxer_select="rtpdec"
3046 smoothstreaming_muxer_select="ismv_muxer"
3047 spdif_demuxer_select="adts_header"
3048 spdif_muxer_select="adts_header"
3049 spx_muxer_select="ogg_muxer"
3050 swf_demuxer_suggest="zlib"
3051 tak_demuxer_select="tak_parser"
3052 tg2_muxer_select="mov_muxer"
3053 tgp_muxer_select="mov_muxer"
3054 vobsub_demuxer_select="mpegps_demuxer"
3055 w64_demuxer_select="wav_demuxer"
3056 w64_muxer_select="wav_muxer"
3057 wav_demuxer_select="riffdec"
3058 wav_muxer_select="riffenc"
3059 webm_muxer_select="iso_media riffenc"
3060 webm_dash_manifest_demuxer_select="matroska_demuxer"
3061 wtv_demuxer_select="mpegts_demuxer riffdec"
3062 wtv_muxer_select="mpegts_muxer riffenc"
3063 xmv_demuxer_select="riffdec"
3064 xwma_demuxer_select="riffdec"
3065
3066 # indevs / outdevs
3067 alsa_indev_deps="alsa"
3068 alsa_outdev_deps="alsa"
3069 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3070 avfoundation_indev_suggest="coregraphics applicationservices"
3071 avfoundation_indev_extralibs="-framework Foundation"
3072 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3073 caca_outdev_deps="libcaca"
3074 decklink_deps_any="libdl LoadLibrary"
3075 decklink_indev_deps="decklink threads"
3076 decklink_indev_extralibs="-lstdc++"
3077 decklink_outdev_deps="decklink threads"
3078 decklink_outdev_extralibs="-lstdc++"
3079 libndi_newtek_indev_deps="libndi_newtek"
3080 libndi_newtek_indev_extralibs="-lndi"
3081 libndi_newtek_outdev_deps="libndi_newtek"
3082 libndi_newtek_outdev_extralibs="-lndi"
3083 dshow_indev_deps="IBaseFilter"
3084 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3085 fbdev_indev_deps="linux_fb_h"
3086 fbdev_outdev_deps="linux_fb_h"
3087 gdigrab_indev_deps="CreateDIBSection"
3088 gdigrab_indev_extralibs="-lgdi32"
3089 gdigrab_indev_select="bmp_decoder"
3090 iec61883_indev_deps="libiec61883"
3091 jack_indev_deps="libjack"
3092 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3093 kmsgrab_indev_deps="libdrm"
3094 lavfi_indev_deps="avfilter"
3095 libcdio_indev_deps="libcdio"
3096 libdc1394_indev_deps="libdc1394"
3097 openal_indev_deps="openal"
3098 opengl_outdev_deps="opengl"
3099 oss_indev_deps_any="sys_soundcard_h"
3100 oss_outdev_deps_any="sys_soundcard_h"
3101 pulse_indev_deps="libpulse"
3102 pulse_outdev_deps="libpulse"
3103 sdl2_outdev_deps="sdl2"
3104 sndio_indev_deps="sndio"
3105 sndio_outdev_deps="sndio"
3106 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3107 v4l2_indev_suggest="libv4l2"
3108 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3109 v4l2_outdev_suggest="libv4l2"
3110 vfwcap_indev_deps="vfw32 vfwcap_defines"
3111 xcbgrab_indev_deps="libxcb"
3112 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3113 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3114 xv_outdev_extralibs="-lXv -lX11 -lXext"
3115
3116 # protocols
3117 async_protocol_deps="threads"
3118 bluray_protocol_deps="libbluray"
3119 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3120 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3121 ffrtmpcrypt_protocol_select="tcp_protocol"
3122 ffrtmphttp_protocol_conflict="librtmp_protocol"
3123 ffrtmphttp_protocol_select="http_protocol"
3124 ftp_protocol_select="tcp_protocol"
3125 gopher_protocol_select="network"
3126 http_protocol_select="tcp_protocol"
3127 http_protocol_suggest="zlib"
3128 httpproxy_protocol_select="tcp_protocol"
3129 httpproxy_protocol_suggest="zlib"
3130 https_protocol_select="tls_protocol"
3131 https_protocol_suggest="zlib"
3132 icecast_protocol_select="http_protocol"
3133 librtmp_protocol_deps="librtmp"
3134 librtmpe_protocol_deps="librtmp"
3135 librtmps_protocol_deps="librtmp"
3136 librtmpt_protocol_deps="librtmp"
3137 librtmpte_protocol_deps="librtmp"
3138 libsmbclient_protocol_deps="libsmbclient gplv3"
3139 libssh_protocol_deps="libssh"
3140 mmsh_protocol_select="http_protocol"
3141 mmst_protocol_select="network"
3142 rtmp_protocol_conflict="librtmp_protocol"
3143 rtmp_protocol_select="tcp_protocol"
3144 rtmp_protocol_suggest="zlib"
3145 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3146 rtmpe_protocol_suggest="zlib"
3147 rtmps_protocol_conflict="librtmp_protocol"
3148 rtmps_protocol_select="tls_protocol"
3149 rtmps_protocol_suggest="zlib"
3150 rtmpt_protocol_select="ffrtmphttp_protocol"
3151 rtmpt_protocol_suggest="zlib"
3152 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3153 rtmpte_protocol_suggest="zlib"
3154 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3155 rtmpts_protocol_suggest="zlib"
3156 rtp_protocol_select="udp_protocol"
3157 schannel_conflict="openssl gnutls"
3158 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3159 sctp_protocol_select="network"
3160 securetransport_conflict="openssl gnutls"
3161 srtp_protocol_select="rtp_protocol srtp"
3162 tcp_protocol_select="network"
3163 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3164 tls_protocol_select="tcp_protocol"
3165 udp_protocol_select="network"
3166 udplite_protocol_select="network"
3167 unix_protocol_deps="sys_un_h"
3168 unix_protocol_select="network"
3169
3170 # filters
3171 afftfilt_filter_deps="avcodec"
3172 afftfilt_filter_select="fft"
3173 afir_filter_deps="avcodec"
3174 afir_filter_select="fft"
3175 amovie_filter_deps="avcodec avformat"
3176 aresample_filter_deps="swresample"
3177 ass_filter_deps="libass"
3178 atempo_filter_deps="avcodec"
3179 atempo_filter_select="rdft"
3180 azmq_filter_deps="libzmq"
3181 blackframe_filter_deps="gpl"
3182 boxblur_filter_deps="gpl"
3183 bs2b_filter_deps="libbs2b"
3184 colormatrix_filter_deps="gpl"
3185 coreimage_filter_deps="coreimage appkit"
3186 coreimage_filter_extralibs="-framework OpenGL"
3187 coreimagesrc_filter_deps="coreimage appkit"
3188 coreimagesrc_filter_extralibs="-framework OpenGL"
3189 cover_rect_filter_deps="avcodec avformat gpl"
3190 cropdetect_filter_deps="gpl"
3191 deinterlace_qsv_filter_deps="libmfx"
3192 deinterlace_vaapi_filter_deps="vaapi"
3193 delogo_filter_deps="gpl"
3194 deshake_filter_select="pixelutils"
3195 deshake_filter_suggest="opencl"
3196 drawtext_filter_deps="libfreetype"
3197 drawtext_filter_suggest="libfontconfig libfribidi"
3198 elbg_filter_deps="avcodec"
3199 eq_filter_deps="gpl"
3200 fftfilt_filter_deps="avcodec"
3201 fftfilt_filter_select="rdft"
3202 find_rect_filter_deps="avcodec avformat gpl"
3203 firequalizer_filter_deps="avcodec"
3204 firequalizer_filter_select="rdft"
3205 flite_filter_deps="libflite"
3206 framerate_filter_select="pixelutils"
3207 frei0r_filter_deps="frei0r libdl"
3208 frei0r_src_filter_deps="frei0r libdl"
3209 fspp_filter_deps="gpl"
3210 geq_filter_deps="gpl"
3211 histeq_filter_deps="gpl"
3212 hqdn3d_filter_deps="gpl"
3213 interlace_filter_deps="gpl"
3214 kerndeint_filter_deps="gpl"
3215 ladspa_filter_deps="ladspa libdl"
3216 mcdeint_filter_deps="avcodec gpl"
3217 movie_filter_deps="avcodec avformat"
3218 mpdecimate_filter_deps="gpl"
3219 mpdecimate_filter_select="pixelutils"
3220 mptestsrc_filter_deps="gpl"
3221 negate_filter_deps="lut_filter"
3222 nnedi_filter_deps="gpl"
3223 ocr_filter_deps="libtesseract"
3224 ocv_filter_deps="libopencv"
3225 overlay_qsv_filter_deps="libmfx"
3226 overlay_qsv_filter_select="qsvvpp"
3227 owdenoise_filter_deps="gpl"
3228 pan_filter_deps="swresample"
3229 perspective_filter_deps="gpl"
3230 phase_filter_deps="gpl"
3231 pp7_filter_deps="gpl"
3232 pp_filter_deps="gpl postproc"
3233 pullup_filter_deps="gpl"
3234 removelogo_filter_deps="avcodec avformat swscale"
3235 repeatfields_filter_deps="gpl"
3236 resample_filter_deps="avresample"
3237 rubberband_filter_deps="librubberband"
3238 sab_filter_deps="gpl swscale"
3239 scale2ref_filter_deps="swscale"
3240 scale_filter_deps="swscale"
3241 scale_qsv_filter_deps="libmfx"
3242 select_filter_select="pixelutils"
3243 showcqt_filter_deps="avcodec avformat swscale"
3244 showcqt_filter_suggest="libfontconfig libfreetype"
3245 showcqt_filter_select="fft"
3246 showfreqs_filter_deps="avcodec"
3247 showfreqs_filter_select="fft"
3248 showspectrum_filter_deps="avcodec"
3249 showspectrum_filter_select="fft"
3250 showspectrumpic_filter_deps="avcodec"
3251 showspectrumpic_filter_select="fft"
3252 signature_filter_deps="gpl avcodec avformat"
3253 smartblur_filter_deps="gpl swscale"
3254 sofalizer_filter_deps="libmysofa avcodec"
3255 sofalizer_filter_select="fft"
3256 spectrumsynth_filter_deps="avcodec"
3257 spectrumsynth_filter_select="fft"
3258 spp_filter_deps="gpl avcodec"
3259 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3260 stereo3d_filter_deps="gpl"
3261 subtitles_filter_deps="avformat avcodec libass"
3262 super2xsai_filter_deps="gpl"
3263 pixfmts_super2xsai_test_deps="super2xsai_filter"
3264 tinterlace_filter_deps="gpl"
3265 tinterlace_merge_test_deps="tinterlace_filter"
3266 tinterlace_pad_test_deps="tinterlace_filter"
3267 tonemap_filter_deps="const_nan"
3268 uspp_filter_deps="gpl avcodec"
3269 unsharp_filter_suggest="opencl"
3270 vaguedenoiser_filter_deps="gpl"
3271 vidstabdetect_filter_deps="libvidstab"
3272 vidstabtransform_filter_deps="libvidstab"
3273 libvmaf_filter_deps="libvmaf"
3274 zmq_filter_deps="libzmq"
3275 zoompan_filter_deps="swscale"
3276 zscale_filter_deps="libzimg const_nan"
3277 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3278 vpp_qsv_filter_deps="libmfx"
3279 vpp_qsv_filter_select="qsvvpp"
3280
3281 # examples
3282 avio_dir_cmd_deps="avformat avutil"
3283 avio_reading_deps="avformat avcodec avutil"
3284 decode_audio_example_deps="avcodec avutil"
3285 decode_video_example_deps="avcodec avutil"
3286 demuxing_decoding_example_deps="avcodec avformat avutil"
3287 encode_audio_example_deps="avcodec avutil"
3288 encode_video_example_deps="avcodec avutil"
3289 extract_mvs_example_deps="avcodec avformat avutil"
3290 filter_audio_example_deps="avfilter avutil"
3291 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3292 filtering_video_example_deps="avfilter avcodec avformat avutil"
3293 http_multiclient_example_deps="avformat avutil fork"
3294 hw_decode_example_deps="avcodec avformat avutil"
3295 metadata_example_deps="avformat avutil"
3296 muxing_example_deps="avcodec avformat avutil swscale"
3297 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3298 remuxing_example_deps="avcodec avformat avutil"
3299 resampling_audio_example_deps="avutil swresample"
3300 scaling_video_example_deps="avutil swscale"
3301 transcode_aac_example_deps="avcodec avformat swresample"
3302 transcoding_example_deps="avfilter avcodec avformat avutil"
3303
3304 # EXTRALIBS_LIST
3305 cpu_init_extralibs="pthreads_extralibs"
3306 cws2fws_extralibs="zlib_extralibs"
3307
3308 # libraries, in linking order
3309 avcodec_deps="avutil"
3310 avcodec_suggest="libm"
3311 avcodec_select="null_bsf"
3312 avdevice_deps="avformat avcodec avutil"
3313 avdevice_suggest="libm"
3314 avfilter_deps="avutil"
3315 avfilter_suggest="libm"
3316 avformat_deps="avcodec avutil"
3317 avformat_suggest="libm network zlib"
3318 avresample_deps="avutil"
3319 avresample_suggest="libm"
3320 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3321 postproc_deps="avutil gpl"
3322 postproc_suggest="libm"
3323 swresample_deps="avutil"
3324 swresample_suggest="libm libsoxr"
3325 swscale_deps="avutil"
3326 swscale_suggest="libm"
3327
3328 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3329 avfilter_extralibs="pthreads_extralibs"
3330 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3331
3332 # programs
3333 ffmpeg_deps="avcodec avfilter avformat swresample"
3334 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3335                null_filter
3336                trim_filter"
3337 ffmpeg_suggest="ole32 psapi shell32"
3338 ffplay_deps="avcodec avformat swscale swresample sdl2"
3339 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3340 ffplay_suggest="shell32"
3341 ffprobe_deps="avcodec avformat"
3342 ffprobe_suggest="shell32"
3343 ffserver_deps="avformat fork sarestart"
3344 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3345
3346 # documentation
3347 podpages_deps="perl"
3348 manpages_deps="perl pod2man"
3349 htmlpages_deps="perl"
3350 htmlpages_deps_any="makeinfo_html texi2html"
3351 txtpages_deps="perl makeinfo"
3352 doc_deps_any="manpages htmlpages podpages txtpages"
3353
3354 # default parameters
3355
3356 logfile="ffbuild/config.log"
3357
3358 # installation paths
3359 prefix_default="/usr/local"
3360 bindir_default='${prefix}/bin'
3361 datadir_default='${prefix}/share/ffmpeg'
3362 docdir_default='${prefix}/share/doc/ffmpeg'
3363 incdir_default='${prefix}/include'
3364 libdir_default='${prefix}/lib'
3365 mandir_default='${prefix}/share/man'
3366
3367 # toolchain
3368 ar_default="ar"
3369 cc_default="gcc"
3370 cxx_default="g++"
3371 host_cc_default="gcc"
3372 doxygen_default="doxygen"
3373 install="install"
3374 ln_s_default="ln -s -f"
3375 nm_default="nm -g"
3376 pkg_config_default=pkg-config
3377 ranlib_default="ranlib"
3378 strip_default="strip"
3379 version_script='--version-script'
3380 x86asmexe_default="nasm"
3381 windres_default="windres"
3382 nvcc_default="nvcc"
3383 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3384 striptype="direct"
3385
3386 # OS
3387 target_os_default=$(tolower $(uname -s))
3388 host_os=$target_os_default
3389
3390 # machine
3391 if test "$target_os_default" = aix; then
3392     arch_default=$(uname -p)
3393     strip_default="strip -X32_64"
3394 else
3395     arch_default=$(uname -m)
3396 fi
3397 cpu="generic"
3398 intrinsics="none"
3399
3400 # configurable options
3401 enable $PROGRAM_LIST
3402 enable $DOCUMENT_LIST
3403 enable $EXAMPLE_LIST
3404 enable $(filter_out avresample $LIBRARY_LIST)
3405 enable stripping
3406
3407 enable asm
3408 enable debug
3409 enable doc
3410 enable faan faandct faanidct
3411 enable optimizations
3412 enable runtime_cpudetect
3413 enable safe_bitstream_reader
3414 enable static
3415 enable swscale_alpha
3416 enable valgrind_backtrace
3417
3418 sws_max_filter_size_default=256
3419 set_default sws_max_filter_size
3420
3421 # internal components are enabled by default
3422 enable $EXTRALIBS_LIST
3423
3424 # Avoid external, non-system, libraries getting enabled by dependency resolution
3425 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3426
3427 # build settings
3428 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3429 LIBPREF="lib"
3430 LIBSUF=".a"
3431 FULLNAME='$(NAME)$(BUILDSUF)'
3432 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3433 SLIBPREF="lib"
3434 SLIBSUF=".so"
3435 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3436 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3437 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3438 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3439 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3440 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3441 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3442
3443 asflags_filter=echo
3444 cflags_filter=echo
3445 ldflags_filter=echo
3446
3447 AS_C='-c'
3448 AS_O='-o $@'
3449 CC_C='-c'
3450 CC_E='-E -o $@'
3451 CC_O='-o $@'
3452 CXX_C='-c'
3453 CXX_O='-o $@'
3454 OBJCC_C='-c'
3455 OBJCC_E='-E -o $@'
3456 OBJCC_O='-o $@'
3457 X86ASM_O='-o $@'
3458 LD_O='-o $@'
3459 LD_LIB='-l%'
3460 LD_PATH='-L'
3461 HOSTCC_C='-c'
3462 HOSTCC_E='-E -o $@'
3463 HOSTCC_O='-o $@'
3464 HOSTLD_O='-o $@'
3465 NVCC_C='-c'
3466 NVCC_O='-o $@'
3467
3468 host_extralibs='-lm'
3469 host_cflags_filter=echo
3470 host_ldflags_filter=echo
3471
3472 target_path='$(CURDIR)'
3473
3474 # since the object filename is not given with the -MM flag, the compiler
3475 # is only able to print the basename, and we must add the path ourselves
3476 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3477 DEPFLAGS='-MM'
3478
3479 mkdir -p ffbuild
3480
3481 # find source path
3482 if test -f configure; then
3483     source_path=.
3484 else
3485     source_path=$(cd $(dirname "$0"); pwd)
3486     case "$source_path" in
3487         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3488     esac
3489     test -e "$source_path/config.h" &&
3490         die "Out of tree builds are impossible with config.h in source dir."
3491 fi
3492
3493 for v in "$@"; do
3494     r=${v#*=}
3495     l=${v%"$r"}
3496     r=$(sh_quote "$r")
3497     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3498 done
3499
3500 find_things(){
3501     thing=$1
3502     pattern=$2
3503     file=$source_path/$3
3504     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3505 }
3506
3507 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3508 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3509 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3510 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3511 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3512 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3513 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3514 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3515 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3516
3517 find_things_extern(){
3518     thing=$1
3519     pattern=$2
3520     file=$source_path/$3
3521     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3522 }
3523
3524 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3525 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3526
3527 AVCODEC_COMPONENTS_LIST="
3528     $BSF_LIST
3529     $DECODER_LIST
3530     $ENCODER_LIST
3531     $HWACCEL_LIST
3532     $PARSER_LIST
3533 "
3534
3535 AVDEVICE_COMPONENTS_LIST="
3536     $INDEV_LIST
3537     $OUTDEV_LIST
3538 "
3539
3540 AVFILTER_COMPONENTS_LIST="
3541     $FILTER_LIST
3542 "
3543
3544 AVFORMAT_COMPONENTS_LIST="
3545     $DEMUXER_LIST
3546     $MUXER_LIST
3547     $PROTOCOL_LIST
3548 "
3549
3550 ALL_COMPONENTS="
3551     $AVCODEC_COMPONENTS_LIST
3552     $AVDEVICE_COMPONENTS_LIST
3553     $AVFILTER_COMPONENTS_LIST
3554     $AVFORMAT_COMPONENTS_LIST
3555 "
3556
3557 for n in $COMPONENT_LIST; do
3558     v=$(toupper ${n%s})_LIST
3559     eval enable \$$v
3560     eval ${n}_if_any="\$$v"
3561 done
3562
3563 enable $ARCH_EXT_LIST
3564
3565 die_unknown(){
3566     echo "Unknown option \"$1\"."
3567     echo "See $0 --help for available options."
3568     exit 1
3569 }
3570
3571 print_in_columns() {
3572     cols=$(expr $ncols / 24)
3573     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3574 }
3575
3576 show_list() {
3577     suffix=_$1
3578     shift
3579     echo $* | sed s/$suffix//g | print_in_columns
3580     exit 0
3581 }
3582
3583 rand_list(){
3584     IFS=', '
3585     set -- $*
3586     unset IFS
3587     for thing; do
3588         comp=${thing%:*}
3589         prob=${thing#$comp}
3590         prob=${prob#:}
3591         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3592         echo "prob ${prob:-0.5}"
3593         printf '%s\n' $comp
3594     done
3595 }
3596
3597 do_random(){
3598     action=$1
3599     shift
3600     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3601     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3602 }
3603
3604 for opt do
3605     optval="${opt#*=}"
3606     case "$opt" in
3607         --extra-ldflags=*)
3608             add_ldflags $optval
3609         ;;
3610         --extra-ldexeflags=*)
3611             add_ldexeflags $optval
3612         ;;
3613         --extra-ldsoflags=*)
3614             add_ldsoflags $optval
3615         ;;
3616         --extra-ldlibflags=*)
3617             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3618                  "removed in the future. Use --extra-ldsoflags instead."
3619             add_ldsoflags $optval
3620         ;;
3621         --extra-libs=*)
3622             add_extralibs $optval
3623         ;;
3624         --disable-devices)
3625             disable $INDEV_LIST $OUTDEV_LIST
3626         ;;
3627         --enable-debug=*)
3628             debuglevel="$optval"
3629         ;;
3630         --disable-programs)
3631             disable $PROGRAM_LIST
3632         ;;
3633         --disable-everything)
3634             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3635         ;;
3636         --disable-all)
3637             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3638             disable $LIBRARY_LIST $PROGRAM_LIST doc
3639             enable avutil
3640         ;;
3641         --enable-random|--disable-random)
3642             action=${opt%%-random}
3643             do_random ${action#--} $COMPONENT_LIST
3644         ;;
3645         --enable-random=*|--disable-random=*)
3646             action=${opt%%-random=*}
3647             do_random ${action#--} $optval
3648         ;;
3649         --enable-sdl)
3650             enable sdl2
3651         ;;
3652         --enable-*=*|--disable-*=*)
3653             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3654             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3655             eval list=\$$(toupper $thing)_LIST
3656             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3657             list=$(filter "$name" $list)
3658             [ "$list" = "" ] && warn "Option $opt did not match anything"
3659             $action $list
3660         ;;
3661         --enable-yasm|--disable-yasm)
3662             warn "The ${opt} option is only provided for compatibility and will be\n"\
3663                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3664             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3665         ;;
3666         --yasmexe=*)
3667             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3668                  "removed in the future. Use --x86asmexe instead."
3669             x86asmexe="$optval"
3670         ;;
3671         --enable-?*|--disable-?*)
3672             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3673             if is_in $option $COMPONENT_LIST; then
3674                 test $action = disable && action=unset
3675                 eval $action \$$(toupper ${option%s})_LIST
3676             elif is_in $option $CMDLINE_SELECT; then
3677                 $action $option
3678             else
3679                 die_unknown $opt
3680             fi
3681         ;;
3682         --list-*)
3683             NAME="${opt#--list-}"
3684             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3685             NAME=${NAME%s}
3686             eval show_list $NAME \$$(toupper $NAME)_LIST
3687         ;;
3688         --help|-h) show_help
3689         ;;
3690         --quiet|-q) quiet=yes
3691         ;;
3692         --fatal-warnings) enable fatal_warnings
3693         ;;
3694         --libfuzzer=*)
3695             libfuzzer_path="$optval"
3696         ;;
3697         *)
3698             optname="${opt%%=*}"
3699             optname="${optname#--}"
3700             optname=$(echo "$optname" | sed 's/-/_/g')
3701             if is_in $optname $CMDLINE_SET; then
3702                 eval $optname='$optval'
3703             elif is_in $optname $CMDLINE_APPEND; then
3704                 append $optname "$optval"
3705             else
3706                 die_unknown $opt
3707             fi
3708         ;;
3709     esac
3710 done
3711
3712 for e in $env; do
3713     eval "export $e"
3714 done
3715
3716 if disabled autodetect; then
3717
3718     # Unless iconv is explicitely disabled by the user, we still want to probe
3719     # for the iconv from the libc.
3720     disabled iconv || enable libc_iconv
3721
3722     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3723     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3724 fi
3725 # Mark specifically enabled, but normally autodetected libraries as requested.
3726 for lib in $AUTODETECT_LIBS; do
3727     enabled $lib && request $lib
3728 done
3729 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3730 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3731 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3732
3733 disabled logging && logfile=/dev/null
3734
3735 # command line configuration sanity checks
3736
3737 # we need to build at least one lib type
3738 if ! enabled_any static shared; then
3739     cat <<EOF
3740 At least one library type must be built.
3741 Specify --enable-static to build the static libraries or --enable-shared to
3742 build the shared libraries as well. To only build the shared libraries specify
3743 --disable-static in addition to --enable-shared.
3744 EOF
3745     exit 1
3746 fi
3747
3748 die_license_disabled() {
3749     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3750 }
3751
3752 die_license_disabled_gpl() {
3753     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3754 }
3755
3756 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3757 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3758
3759 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3760 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3761
3762 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3763
3764 enabled_all gnutls openssl &&
3765     die "GnuTLS and OpenSSL must not be enabled at the same time."
3766
3767 # Disable all the library-specific components if the library itself
3768 # is disabled, see AVCODEC_LIST and following _LIST variables.
3769
3770 disable_components(){
3771     disabled ${1} && disable $(
3772         eval components="\$$(toupper ${1})_COMPONENTS"
3773         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3774     )
3775 }
3776
3777 map 'disable_components $v' $LIBRARY_LIST
3778
3779 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3780 set >> $logfile
3781
3782 test -n "$valgrind" && toolchain="valgrind-memcheck"
3783
3784 enabled ossfuzz && {
3785     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3786     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3787 }
3788
3789 case "$toolchain" in
3790     *-asan)
3791         cc_default="${toolchain%-asan}"
3792         add_cflags  -fsanitize=address
3793         add_ldflags -fsanitize=address
3794     ;;
3795     *-msan)
3796         cc_default="${toolchain%-msan}"
3797         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3798         add_ldflags -fsanitize=memory
3799     ;;
3800     *-tsan)
3801         cc_default="${toolchain%-tsan}"
3802         add_cflags  -fsanitize=thread -fPIE
3803         add_ldflags -fsanitize=thread -pie
3804         case "$toolchain" in
3805             gcc-tsan)
3806                 add_cflags  -fPIC
3807                 add_ldflags -fPIC
3808                 ;;
3809         esac
3810     ;;
3811     *-usan)
3812         cc_default="${toolchain%-usan}"
3813         add_cflags  -fsanitize=undefined
3814         add_ldflags -fsanitize=undefined
3815     ;;
3816     valgrind-*)
3817         target_exec_default="valgrind"
3818         case "$toolchain" in
3819             valgrind-massif)
3820                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3821                 ;;
3822             valgrind-memcheck)
3823                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3824                 ;;
3825         esac
3826     ;;
3827     msvc)
3828         # Check whether the current MSVC version needs the C99 converter.
3829         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3830         # support enough of C99 to build ffmpeg. Default to the new
3831         # behaviour if the regexp was unable to match anything, since this
3832         # successfully parses the version number of existing supported
3833         # versions that require the converter (MSVC 2010 and 2012).
3834         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3835         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3836             cc_default="cl"
3837             cxx_default="cl"
3838         else
3839             cc_default="c99wrap cl"
3840             cxx_default="c99wrap cl"
3841         fi
3842         ld_default="$source_path/compat/windows/mslink"
3843         nm_default="dumpbin -symbols"
3844         ar_default="lib"
3845         case "$arch" in
3846         aarch64|arm64)
3847             as_default="armasm64"
3848             ;;
3849         arm*)
3850             as_default="armasm"
3851             ;;
3852         esac
3853         target_os_default="win32"
3854         # Use a relative path for TMPDIR. This makes sure all the
3855         # ffconf temp files are written with a relative path, avoiding
3856         # issues with msys/win32 path conversion for MSVC parameters
3857         # such as -Fo<file> or -out:<file>.
3858         TMPDIR=.
3859     ;;
3860     icl)
3861         cc_default="icl"
3862         ld_default="xilink"
3863         nm_default="dumpbin -symbols"
3864         ar_default="xilib"
3865         target_os_default="win32"
3866         TMPDIR=.
3867     ;;
3868     gcov)
3869         add_cflags  -fprofile-arcs -ftest-coverage
3870         add_ldflags -fprofile-arcs -ftest-coverage
3871     ;;
3872     llvm-cov)
3873         add_cflags -fprofile-arcs -ftest-coverage
3874         add_ldflags --coverage
3875     ;;
3876     hardened)
3877         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3878         add_cflags   -fno-strict-overflow -fstack-protector-all
3879         add_ldflags  -Wl,-z,relro -Wl,-z,now
3880         add_cflags   -fPIE
3881         add_ldexeflags -fPIE -pie
3882     ;;
3883     ?*)
3884         die "Unknown toolchain $toolchain"
3885     ;;
3886 esac
3887
3888 if test -n "$cross_prefix"; then
3889     test -n "$arch" && test -n "$target_os" ||
3890         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3891     enable cross_compile
3892 fi
3893
3894 ar_default="${cross_prefix}${ar_default}"
3895 cc_default="${cross_prefix}${cc_default}"
3896 cxx_default="${cross_prefix}${cxx_default}"
3897 nm_default="${cross_prefix}${nm_default}"
3898 pkg_config_default="${cross_prefix}${pkg_config_default}"
3899 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3900     ranlib_default="${cross_prefix}${ranlib_default} -D"
3901 else
3902     ranlib_default="${cross_prefix}${ranlib_default}"
3903 fi
3904 strip_default="${cross_prefix}${strip_default}"
3905 windres_default="${cross_prefix}${windres_default}"
3906
3907 sysinclude_default="${sysroot}/usr/include"
3908
3909 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3910     target_exec target_os x86asmexe nvcc
3911 enabled cross_compile || host_cc_default=$cc
3912 set_default host_cc
3913
3914 pkg_config_fail_message=""
3915 if ! $pkg_config --version >/dev/null 2>&1; then
3916     warn "$pkg_config not found, library detection may fail."
3917     pkg_config=false
3918 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3919     pkg_config_fail_message="
3920 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3921 fi
3922
3923 if test $doxygen != $doxygen_default && \
3924   ! $doxygen --version >/dev/null 2>&1; then
3925     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3926 fi
3927
3928 exesuf() {
3929     case $1 in
3930         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3931     esac
3932 }
3933
3934 EXESUF=$(exesuf $target_os)
3935 HOSTEXESUF=$(exesuf $host_os)
3936
3937 # set temporary file name
3938 : ${TMPDIR:=$TEMPDIR}
3939 : ${TMPDIR:=$TMP}
3940 : ${TMPDIR:=/tmp}
3941
3942 if [ -n "$tempprefix" ] ; then
3943     mktemp(){
3944         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3945         echo "$tmpname"
3946         mkdir "$tmpname"
3947     }
3948 elif ! check_cmd mktemp -u XXXXXX; then
3949     # simple replacement for missing mktemp
3950     # NOT SAFE FOR GENERAL USE
3951     mktemp(){
3952         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3953         echo "$tmpname"
3954         mkdir "$tmpname"
3955     }
3956 fi
3957
3958 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3959     die "Unable to create temporary directory in $TMPDIR."
3960
3961 tmpfile(){
3962     tmp="${FFTMPDIR}/test"$2
3963     (set -C; exec > $tmp) 2> /dev/null ||
3964         die "Unable to create temporary file in $FFTMPDIR."
3965     eval $1=$tmp
3966 }
3967
3968 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3969 trap 'exit 2' INT
3970
3971 tmpfile TMPASM .asm
3972 tmpfile TMPC   .c
3973 tmpfile TMPCPP .cpp
3974 tmpfile TMPE   $EXESUF
3975 tmpfile TMPH   .h
3976 tmpfile TMPM   .m
3977 tmpfile TMPO   .o
3978 tmpfile TMPS   .S
3979 tmpfile TMPSH  .sh
3980 tmpfile TMPV   .ver
3981
3982 unset -f mktemp
3983
3984 chmod +x $TMPE
3985
3986 # make sure we can execute files in $TMPDIR
3987 cat > $TMPSH 2>> $logfile <<EOF
3988 #! /bin/sh
3989 EOF
3990 chmod +x $TMPSH >> $logfile 2>&1
3991 if ! $TMPSH >> $logfile 2>&1; then
3992     cat <<EOF
3993 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3994 variable to another directory and make sure that it is not mounted noexec.
3995 EOF
3996     die "Sanity test failed."
3997 fi
3998
3999 armasm_flags(){
4000     for flag; do
4001         case $flag in
4002             # Filter out MSVC cl.exe options from cflags that shouldn't
4003             # be passed to gas-preprocessor
4004             -M[TD]*)                                            ;;
4005             *)                  echo $flag                      ;;
4006         esac
4007    done
4008 }
4009
4010 cparser_flags(){
4011     for flag; do
4012         case $flag in
4013             -Wno-switch)             echo -Wno-switch-enum ;;
4014             -Wno-format-zero-length) ;;
4015             -Wdisabled-optimization) ;;
4016             -Wno-pointer-sign)       echo -Wno-other ;;
4017             *)                       echo $flag ;;
4018         esac
4019     done
4020 }
4021
4022 msvc_common_flags(){
4023     for flag; do
4024         case $flag in
4025             # In addition to specifying certain flags under the compiler
4026             # specific filters, they must be specified here as well or else the
4027             # generic catch all at the bottom will print the original flag.
4028             -Wall)                ;;
4029             -Wextra)              ;;
4030             -std=c99)             ;;
4031             # Common flags
4032             -fomit-frame-pointer) ;;
4033             -g)                   echo -Z7 ;;
4034             -fno-math-errno)      ;;
4035             -fno-common)          ;;
4036             -fno-signed-zeros)    ;;
4037             -fPIC)                ;;
4038             -mthumb)              ;;
4039             -march=*)             ;;
4040             -lz)                  echo zlib.lib ;;
4041             -lx264)               echo libx264.lib ;;
4042             -lstdc++)             ;;
4043             -l*)                  echo ${flag#-l}.lib ;;
4044             -LARGEADDRESSAWARE)   echo $flag ;;
4045             -L*)                  echo -libpath:${flag#-L} ;;
4046             *)                    echo $flag ;;
4047         esac
4048     done
4049 }
4050
4051 msvc_flags(){
4052     msvc_common_flags "$@"
4053     for flag; do
4054         case $flag in
4055             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4056                                        -wd4554 ;;
4057             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4058                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4059                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4060                                        -wd4307 \
4061                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4062         esac
4063     done
4064 }
4065
4066 icl_flags(){
4067     msvc_common_flags "$@"
4068     for flag; do
4069         case $flag in
4070             # Despite what Intel's documentation says -Wall, which is supported
4071             # on Windows, does enable remarks so disable them here.
4072             -Wall)                echo $flag -Qdiag-disable:remark ;;
4073             -std=c99)             echo -Qstd=c99 ;;
4074             -flto)                echo -ipo ;;
4075         esac
4076     done
4077 }
4078
4079 icc_flags(){
4080     for flag; do
4081         case $flag in
4082             -flto)                echo -ipo ;;
4083             *)                    echo $flag ;;
4084         esac
4085     done
4086 }
4087
4088 suncc_flags(){
4089     for flag; do
4090         case $flag in
4091             -march=*|-mcpu=*)
4092                 case "${flag#*=}" in
4093                     native)                   echo -xtarget=native       ;;
4094                     v9|niagara)               echo -xarch=sparc          ;;
4095                     ultrasparc)               echo -xarch=sparcvis       ;;
4096                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4097                     i586|pentium)             echo -xchip=pentium        ;;
4098                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4099                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4100                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4101                     pentium4*)          echo -xtarget=pentium4           ;;
4102                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4103                     *-sse3)             echo -xarch=sse3                 ;;
4104                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4105                     bonnell)                   echo -xarch=ssse3         ;;
4106                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4107                     westmere)                  echo -xtarget=westmere    ;;
4108                     silvermont)                echo -xarch=sse4_2        ;;
4109                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4110                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4111                                                echo -xarch=avx           ;;
4112                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4113                     btver1)                    echo -xarch=amdsse4a      ;;
4114                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4115                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4116                     k8|opteron|athlon64|athlon-fx)
4117                                                echo -xarch=sse2a         ;;
4118                     athlon*)                   echo -xarch=pentium_proa  ;;
4119                 esac
4120                 ;;
4121             -std=c99)             echo -xc99              ;;
4122             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4123             -fPIC)                echo -KPIC -xcode=pic32 ;;
4124             -W*,*)                echo $flag              ;;
4125             -f*-*|-W*|-mimpure-text)                      ;;
4126             -shared)              echo -G                 ;;
4127             *)                    echo $flag              ;;
4128         esac
4129     done
4130 }
4131
4132 probe_cc(){
4133     pfx=$1
4134     _cc=$2
4135     first=$3
4136
4137     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4138     unset _ld_o _ldflags _ld_lib _ld_path
4139     unset _depflags _DEPCMD _DEPFLAGS
4140     _flags_filter=echo
4141
4142     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4143         true # no-op to avoid reading stdin in following checks
4144     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4145         _type=llvm_gcc
4146         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4147         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4148         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4149         _cflags_speed='-O3'
4150         _cflags_size='-Os'
4151     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4152         _type=gcc
4153         gcc_version=$($_cc --version | head -n1)
4154         gcc_basever=$($_cc -dumpversion)
4155         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4156         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4157         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4158         case $gcc_basever in
4159             2) ;;
4160             2.*) ;;
4161             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4162         esac
4163         if [ "$first" = true ]; then
4164             case $gcc_basever in
4165                 4.2*)
4166                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4167             esac
4168         fi
4169         _cflags_speed='-O3'
4170         _cflags_size='-Os'
4171     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4172         _type=icc
4173         _ident=$($_cc --version | head -n1)
4174         _depflags='-MMD'
4175         _cflags_speed='-O3'
4176         _cflags_size='-Os'
4177         _cflags_noopt='-O1'
4178         _flags_filter=icc_flags
4179     elif $_cc -v 2>&1 | grep -q xlc; then
4180         _type=xlc
4181         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4182         _cflags_speed='-O5'
4183         _cflags_size='-O5 -qcompact'
4184     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4185         test -d "$sysroot" || die "No valid sysroot specified."
4186         _type=armcc
4187         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4188         armcc_conf="$PWD/armcc.conf"
4189         $_cc --arm_linux_configure                 \
4190              --arm_linux_config_file="$armcc_conf" \
4191              --configure_sysroot="$sysroot"        \
4192              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4193              die "Error creating armcc configuration file."
4194         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4195         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4196         as_default="${cross_prefix}gcc"
4197         _depflags='-MMD'
4198         _cflags_speed='-O3'
4199         _cflags_size='-Os'
4200     elif $_cc -v 2>&1 | grep -q clang; then
4201         _type=clang
4202         _ident=$($_cc --version 2>/dev/null | head -n1)
4203         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4204         _cflags_speed='-O3'
4205         _cflags_size='-Oz'
4206     elif $_cc -V 2>&1 | grep -q Sun; then
4207         _type=suncc
4208         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4209         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4210         _DEPFLAGS='-xM1 -xc99'
4211         _ldflags='-std=c99'
4212         _cflags_speed='-O5'
4213         _cflags_size='-O5 -xspace'
4214         _flags_filter=suncc_flags
4215     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4216         _type=pathscale
4217         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4218         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4219         _cflags_speed='-O2'
4220         _cflags_size='-Os'
4221         _flags_filter='filter_out -Wdisabled-optimization'
4222     elif $_cc -v 2>&1 | grep -q Open64; then
4223         _type=open64
4224         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4225         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4226         _cflags_speed='-O2'
4227         _cflags_size='-Os'
4228         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4229     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4230         _type=armasm
4231         _ident=$($_cc | head -n1)
4232         # 4509: "This form of conditional instruction is deprecated"
4233         _flags="-nologo -ignore 4509"
4234         _flags_filter=armasm_flags
4235     elif $_cc 2>&1 | grep -q Intel; then
4236         _type=icl
4237         _ident=$($_cc 2>&1 | head -n1)
4238         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4239         # Not only is O3 broken on 13.x+ but it is slower on all previous
4240         # versions (tested) as well.
4241         _cflags_speed="-O2"
4242         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4243         if $_cc 2>&1 | grep -q Linker; then
4244             _ld_o='-out:$@'
4245         else
4246             _ld_o='-Fe$@'
4247         fi
4248         _cc_o='-Fo$@'
4249         _cc_e='-P'
4250         _flags_filter=icl_flags
4251         _ld_lib='lib%.a'
4252         _ld_path='-libpath:'
4253         # -Qdiag-error to make icl error when seeing certain unknown arguments
4254         _flags='-nologo -Qdiag-error:4044,10157'
4255         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4256         # with MSVC which enables it by default.
4257         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4258         disable stripping
4259     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4260         # lld can emulate multiple different linkers; in ms link.exe mode,
4261         # the -? parameter gives the help output which contains an identifyable
4262         # string, while it gives an error in other modes.
4263         _type=lld-link
4264         # The link.exe mode doesn't have a switch for getting the version,
4265         # but we can force it back to gnu mode and get the version from there.
4266         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4267         _ld_o='-out:$@'
4268         _flags_filter=msvc_flags
4269         _ld_lib='lib%.a'
4270         _ld_path='-libpath:'
4271     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4272         _type=msvc
4273         _ident=$($_cc 2>&1 | head -n1)
4274         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4275         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4276         _cflags_speed="-O2"
4277         _cflags_size="-O1"
4278         _cflags_noopt="-O1"
4279         if $_cc -nologo- 2>&1 | grep -q Linker; then
4280             _ld_o='-out:$@'
4281         else
4282             _ld_o='-Fe$@'
4283         fi
4284         _cc_o='-Fo$@'
4285         _cc_e='-P -Fi$@'
4286         _flags_filter=msvc_flags
4287         _ld_lib='lib%.a'
4288         _ld_path='-libpath:'
4289         _flags='-nologo'
4290         disable stripping
4291     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4292         _type=cparser
4293         _ident=$($_cc --version | head -n1)
4294         _depflags='-MMD'
4295         _cflags_speed='-O4'
4296         _cflags_size='-O2'
4297         _flags_filter=cparser_flags
4298     fi
4299
4300     eval ${pfx}_type=\$_type
4301     eval ${pfx}_ident=\$_ident
4302 }
4303
4304 set_ccvars(){
4305     eval ${1}_C=\${_cc_c-\${${1}_C}}
4306     eval ${1}_E=\${_cc_e-\${${1}_E}}
4307     eval ${1}_O=\${_cc_o-\${${1}_O}}
4308
4309     if [ -n "$_depflags" ]; then
4310         eval ${1}_DEPFLAGS=\$_depflags
4311     else
4312         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4313         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4314         eval DEP${1}FLAGS=\$_flags
4315     fi
4316 }
4317
4318 probe_cc cc "$cc" "true"
4319 cflags_filter=$_flags_filter
4320 cflags_speed=$_cflags_speed
4321 cflags_size=$_cflags_size
4322 cflags_noopt=$_cflags_noopt
4323 add_cflags $_flags $_cflags
4324 cc_ldflags=$_ldflags
4325 set_ccvars CC
4326 set_ccvars CXX
4327
4328 probe_cc hostcc "$host_cc"
4329 host_cflags_filter=$_flags_filter
4330 host_cflags_speed=$_cflags_speed
4331 add_host_cflags  $_flags $_cflags
4332 set_ccvars HOSTCC
4333
4334 test -n "$cc_type" && enable $cc_type ||
4335     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4336
4337 : ${as_default:=$cc}
4338 : ${objcc_default:=$cc}
4339 : ${dep_cc_default:=$cc}
4340 : ${ld_default:=$cc}
4341 : ${host_ld_default:=$host_cc}
4342 set_default ar as objcc dep_cc ld ln_s host_ld windres
4343
4344 probe_cc as "$as"
4345 asflags_filter=$_flags_filter
4346 add_asflags $_flags $_cflags
4347 set_ccvars AS
4348
4349 probe_cc objcc "$objcc"
4350 objcflags_filter=$_flags_filter
4351 add_objcflags $_flags $_cflags
4352 set_ccvars OBJC
4353
4354 probe_cc ld "$ld"
4355 ldflags_filter=$_flags_filter
4356 add_ldflags $_flags $_ldflags
4357 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4358 LD_O=${_ld_o-$LD_O}
4359 LD_LIB=${_ld_lib-$LD_LIB}
4360 LD_PATH=${_ld_path-$LD_PATH}
4361
4362 probe_cc hostld "$host_ld"
4363 host_ldflags_filter=$_flags_filter
4364 add_host_ldflags $_flags $_ldflags
4365 HOSTLD_O=${_ld_o-$HOSTLD_O}
4366
4367 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4368     probe_cc depcc "$dep_cc"
4369     CCDEP=${_DEPCMD:-$DEPCMD}
4370     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4371     DEPCCFLAGS=$_flags
4372 fi
4373
4374 if $ar 2>&1 | grep -q Microsoft; then
4375     arflags="-nologo"
4376     ar_o='-out:$@'
4377 elif $ar 2>&1 | grep -q "\[D\] "; then
4378     arflags="rcD"
4379     ar_o='$@'
4380 else
4381     arflags="rc"
4382     ar_o='$@'
4383 fi
4384
4385 add_cflags $extra_cflags
4386 add_cxxflags $extra_cxxflags
4387 add_objcflags $extra_objcflags
4388 add_asflags $extra_cflags
4389
4390 if test -n "$sysroot"; then
4391     case "$cc_type" in
4392         gcc|llvm_gcc|clang)
4393             add_cppflags --sysroot="$sysroot"
4394             add_ldflags --sysroot="$sysroot"
4395         ;;
4396     esac
4397 fi
4398
4399 if test "$cpu" = host; then
4400     enabled cross_compile &&
4401         die "--cpu=host makes no sense when cross-compiling."
4402
4403     case "$cc_type" in
4404         gcc|llvm_gcc)
4405             check_native(){
4406                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4407                 sed -n "/cc1.*$1=/{
4408                             s/.*$1=\\([^ ]*\\).*/\\1/
4409                             p
4410                             q
4411                         }" $TMPE
4412             }
4413             cpu=$(check_native -march || check_native -mcpu)
4414         ;;
4415         clang)
4416             check_native(){
4417                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4418                 sed -n "/cc1.*-target-cpu /{
4419                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4420                             p
4421                             q
4422                         }" $TMPE
4423             }
4424             cpu=$(check_native -march)
4425         ;;
4426     esac
4427
4428     test "${cpu:-host}" = host &&
4429         die "--cpu=host not supported with compiler $cc"
4430 fi
4431
4432 # Deal with common $arch aliases
4433 case "$arch" in
4434     aarch64|arm64)
4435         arch="aarch64"
4436     ;;
4437     arm*|iPad*|iPhone*)
4438         arch="arm"
4439     ;;
4440     mips*|IP*)
4441         case "$arch" in
4442         *el)
4443             add_cppflags -EL
4444             add_ldflags -EL
4445         ;;
4446         *eb)
4447             add_cppflags -EB
4448             add_ldflags -EB
4449         ;;
4450         esac
4451         arch="mips"
4452     ;;
4453     parisc*|hppa*)
4454         arch="parisc"
4455     ;;
4456     "Power Macintosh"|ppc*|powerpc*)
4457         arch="ppc"
4458     ;;
4459     s390|s390x)
4460         arch="s390"
4461     ;;
4462     sh4|sh)
4463         arch="sh4"
4464     ;;
4465     sun4*|sparc*)
4466         arch="sparc"
4467     ;;
4468     tilegx|tile-gx)
4469         arch="tilegx"
4470     ;;
4471     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4472         arch="x86"
4473     ;;
4474 esac
4475
4476 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4477 enable $arch
4478
4479 # Add processor-specific flags
4480 if enabled aarch64; then
4481
4482     case $cpu in
4483         armv*)
4484             cpuflags="-march=$cpu"
4485         ;;
4486         *)
4487             cpuflags="-mcpu=$cpu"
4488         ;;
4489     esac
4490
4491 elif enabled alpha; then
4492
4493     cpuflags="-mcpu=$cpu"
4494
4495 elif enabled arm; then
4496
4497     check_arm_arch() {
4498         check_cpp_condition stddef.h \
4499             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4500             $cpuflags
4501     }
4502
4503     probe_arm_arch() {
4504         if   check_arm_arch 4;        then echo armv4
4505         elif check_arm_arch 4T;       then echo armv4t
4506         elif check_arm_arch 5;        then echo armv5
4507         elif check_arm_arch 5E;       then echo armv5e
4508         elif check_arm_arch 5T;       then echo armv5t
4509         elif check_arm_arch 5TE;      then echo armv5te
4510         elif check_arm_arch 5TEJ;     then echo armv5te
4511         elif check_arm_arch 6;        then echo armv6
4512         elif check_arm_arch 6J;       then echo armv6j
4513         elif check_arm_arch 6K;       then echo armv6k
4514         elif check_arm_arch 6Z;       then echo armv6z
4515         elif check_arm_arch 6ZK;      then echo armv6zk
4516         elif check_arm_arch 6T2;      then echo armv6t2
4517         elif check_arm_arch 7;        then echo armv7
4518         elif check_arm_arch 7A  7_A;  then echo armv7-a
4519         elif check_arm_arch 7S;       then echo armv7-a
4520         elif check_arm_arch 7R  7_R;  then echo armv7-r
4521         elif check_arm_arch 7M  7_M;  then echo armv7-m
4522         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4523         elif check_arm_arch 8A  8_A;  then echo armv8-a
4524         fi
4525     }
4526
4527     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4528
4529     case $cpu in
4530         armv*)
4531             cpuflags="-march=$cpu"
4532             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4533         ;;
4534         *)
4535             cpuflags="-mcpu=$cpu"
4536             case $cpu in
4537                 cortex-a*)                               subarch=armv7a  ;;
4538                 cortex-r*)                               subarch=armv7r  ;;
4539                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4540                 arm11*)                                  subarch=armv6   ;;
4541                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4542                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4543                 *)                             subarch=$(probe_arm_arch) ;;
4544             esac
4545         ;;
4546     esac
4547
4548     case "$subarch" in
4549         armv5t*)    enable fast_clz                ;;
4550         armv[6-8]*)
4551             enable fast_clz
4552             disabled fast_unaligned || enable fast_unaligned
4553             ;;
4554     esac
4555
4556 elif enabled avr32; then
4557
4558     case $cpu in
4559         ap7[02]0[0-2])
4560             subarch="avr32_ap"
4561             cpuflags="-mpart=$cpu"
4562         ;;
4563         ap)
4564             subarch="avr32_ap"
4565             cpuflags="-march=$cpu"
4566         ;;
4567         uc3[ab]*)
4568             subarch="avr32_uc"
4569             cpuflags="-mcpu=$cpu"
4570         ;;
4571         uc)
4572             subarch="avr32_uc"
4573             cpuflags="-march=$cpu"
4574         ;;
4575     esac
4576
4577 elif enabled bfin; then
4578
4579     cpuflags="-mcpu=$cpu"
4580
4581 elif enabled mips; then
4582
4583     cpuflags="-march=$cpu"
4584
4585     if [ "$cpu" != "generic" ]; then
4586         disable mips32r2
4587         disable mips32r5
4588         disable mips64r2
4589         disable mips32r6
4590         disable mips64r6
4591         disable loongson2
4592         disable loongson3
4593
4594         case $cpu in
4595             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4596                 enable mips32r2
4597                 disable msa
4598             ;;
4599             p5600|i6400|p6600)
4600                 disable mipsdsp
4601                 disable mipsdspr2
4602             ;;
4603             loongson*)
4604                 enable loongson2
4605                 enable loongson3
4606                 enable local_aligned
4607                 enable simd_align_16
4608                 enable fast_64bit
4609                 enable fast_clz
4610                 enable fast_cmov
4611                 enable fast_unaligned
4612                 disable aligned_stack
4613                 disable mipsfpu
4614                 disable mipsdsp
4615                 disable mipsdspr2
4616                 case $cpu in
4617                     loongson3*)
4618                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4619                     ;;
4620                     loongson2e)
4621                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4622                     ;;
4623                     loongson2f)
4624                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4625                     ;;
4626                 esac
4627             ;;
4628             *)
4629                 # Unknown CPU. Disable everything.
4630                 warn "unknown CPU. Disabling all MIPS optimizations."
4631                 disable mipsfpu
4632                 disable mipsdsp
4633                 disable mipsdspr2
4634                 disable msa
4635                 disable mmi
4636             ;;
4637         esac
4638
4639         case $cpu in
4640             24kc)
4641                 disable mipsfpu
4642                 disable mipsdsp
4643                 disable mipsdspr2
4644             ;;
4645             24kf*)
4646                 disable mipsdsp
4647                 disable mipsdspr2
4648             ;;
4649             24kec|34kc|1004kc)
4650                 disable mipsfpu
4651                 disable mipsdspr2
4652             ;;
4653             24kef*|34kf*|1004kf*)
4654                 disable mipsdspr2
4655             ;;
4656             74kc)
4657                 disable mipsfpu
4658             ;;
4659             p5600)
4660                 enable mips32r5
4661                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4662             ;;
4663             i6400)
4664                 enable mips64r6
4665                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4666             ;;
4667             p6600)
4668                 enable mips64r6
4669                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4670             ;;
4671         esac
4672     else
4673         # We do not disable anything. Is up to the user to disable the unwanted features.
4674         warn 'generic cpu selected'
4675     fi
4676
4677 elif enabled ppc; then
4678
4679     disable ldbrx
4680
4681     case $(tolower $cpu) in
4682         601|ppc601|powerpc601)
4683             cpuflags="-mcpu=601"
4684             disable altivec
4685         ;;
4686         603*|ppc603*|powerpc603*)
4687             cpuflags="-mcpu=603"
4688             disable altivec
4689         ;;
4690         604*|ppc604*|powerpc604*)
4691             cpuflags="-mcpu=604"
4692             disable altivec
4693         ;;
4694         g3|75*|ppc75*|powerpc75*)
4695             cpuflags="-mcpu=750"
4696             disable altivec
4697         ;;
4698         g4|745*|ppc745*|powerpc745*)
4699             cpuflags="-mcpu=7450"
4700             disable vsx
4701         ;;
4702         74*|ppc74*|powerpc74*)
4703             cpuflags="-mcpu=7400"
4704             disable vsx
4705         ;;
4706         g5|970|ppc970|powerpc970)
4707             cpuflags="-mcpu=970"
4708             disable vsx
4709         ;;
4710         power[3-6]*)
4711             cpuflags="-mcpu=$cpu"
4712             disable vsx
4713         ;;
4714         power[7-8]*)
4715             cpuflags="-mcpu=$cpu"
4716         ;;
4717         cell)
4718             cpuflags="-mcpu=cell"
4719             enable ldbrx
4720             disable vsx
4721         ;;
4722         e500mc)
4723             cpuflags="-mcpu=e500mc"
4724             disable altivec
4725         ;;
4726         e500v2)
4727             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4728             disable altivec
4729             disable dcbzl
4730         ;;
4731         e500)
4732             cpuflags="-mcpu=8540 -mhard-float"
4733             disable altivec
4734             disable dcbzl
4735         ;;
4736     esac
4737
4738 elif enabled sparc; then
4739
4740     case $cpu in
4741         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4742             cpuflags="-mcpu=$cpu"
4743         ;;
4744         ultrasparc*|niagara[234])
4745             cpuflags="-mcpu=$cpu"
4746         ;;
4747     esac
4748
4749 elif enabled x86; then
4750
4751     case $cpu in
4752         i[345]86|pentium)
4753             cpuflags="-march=$cpu"
4754             disable i686
4755             disable mmx
4756         ;;
4757         # targets that do NOT support nopl and conditional mov (cmov)
4758         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4759             cpuflags="-march=$cpu"
4760             disable i686
4761         ;;
4762         # targets that do support nopl and conditional mov (cmov)
4763         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4764         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4765         |amdfam10|barcelona|b[dt]ver*|znver*)
4766             cpuflags="-march=$cpu"
4767             enable i686
4768             enable fast_cmov
4769         ;;
4770         # targets that do support conditional mov but on which it's slow
4771         pentium4|pentium4m|prescott|nocona)
4772             cpuflags="-march=$cpu"
4773             enable i686
4774             disable fast_cmov
4775         ;;
4776     esac
4777
4778 fi
4779
4780 if [ "$cpu" != generic ]; then
4781     add_cflags  $cpuflags
4782     add_asflags $cpuflags
4783     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4784 fi
4785
4786 # compiler sanity check
4787 check_exec <<EOF
4788 int main(void){ return 0; }
4789 EOF
4790 if test "$?" != 0; then
4791     echo "$cc is unable to create an executable file."
4792     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4793         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4794         echo "Only do this if you know what cross compiling means."
4795     fi
4796     die "C compiler test failed."
4797 fi
4798
4799 add_cppflags -D_ISOC99_SOURCE
4800 add_cxxflags -D__STDC_CONSTANT_MACROS
4801 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4802
4803 # some compilers silently accept -std=c11, so we also need to check that the
4804 # version macro is defined properly
4805 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4806     add_cflags -std=c11 ||
4807     check_cflags -std=c99
4808
4809 check_cppflags -D_FILE_OFFSET_BITS=64
4810 check_cppflags -D_LARGEFILE_SOURCE
4811
4812 add_host_cppflags -D_ISOC99_SOURCE
4813 check_host_cflags -std=c99
4814 check_host_cflags -Wall
4815 check_host_cflags $host_cflags_speed
4816
4817 check_64bit(){
4818     arch32=$1
4819     arch64=$2
4820     expr=$3
4821     check_code cc "" "int test[2*($expr) - 1]" &&
4822         subarch=$arch64 || subarch=$arch32
4823 }
4824
4825 case "$arch" in
4826     aarch64|alpha|ia64)
4827         spic=$shared
4828     ;;
4829     mips)
4830         check_64bit mips mips64 '_MIPS_SIM > 1'
4831         spic=$shared
4832     ;;
4833     parisc)
4834         check_64bit parisc parisc64 'sizeof(void *) > 4'
4835         spic=$shared
4836     ;;
4837     ppc)
4838         check_64bit ppc ppc64 'sizeof(void *) > 4'
4839         spic=$shared
4840     ;;
4841     s390)
4842         check_64bit s390 s390x 'sizeof(void *) > 4'
4843         spic=$shared
4844     ;;
4845     sparc)
4846         check_64bit sparc sparc64 'sizeof(void *) > 4'
4847         spic=$shared
4848     ;;
4849     x86)
4850         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4851         # Treat x32 as x64 for now. Note it also needs spic=$shared
4852         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4853             subarch=x86_64
4854         if test "$subarch" = "x86_64"; then
4855             spic=$shared
4856         fi
4857     ;;
4858     ppc)
4859         check_cc <<EOF && subarch="ppc64"
4860         int test[(int)sizeof(char*) - 7];
4861 EOF
4862     ;;
4863 esac
4864
4865 enable $subarch
4866 enabled spic && enable_weak pic
4867
4868 enabled x86_64 && objformat=elf64 || objformat="elf32"
4869
4870 # OS specific
4871 case $target_os in
4872     aix)
4873         SHFLAGS=-shared
4874         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4875         enabled shared && add_ldflags -Wl,-brtl
4876         arflags='-Xany -r -c'
4877         ;;
4878     android)
4879         disable symver
4880         enable section_data_rel_ro
4881         SLIB_INSTALL_NAME='$(SLIBNAME)'
4882         SLIB_INSTALL_LINKS=
4883         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4884         ;;
4885     haiku)
4886         prefix_default="/boot/common"
4887         network_extralibs="-lnetwork"
4888         host_extralibs=
4889         ;;
4890     sunos)
4891         SHFLAGS='-shared -Wl,-h,$$(@F)'
4892         enabled x86 && append SHFLAGS -mimpure-text
4893         network_extralibs="-lsocket -lnsl"
4894         add_cppflags -D__EXTENSIONS__
4895         # When using suncc to build, the Solaris linker will mark
4896         # an executable with each instruction set encountered by
4897         # the Solaris assembler.  As our libraries contain their own
4898         # guards for processor-specific code, instead suppress
4899         # generation of the HWCAPS ELF section on Solaris x86 only.
4900         enabled_all suncc x86 &&
4901             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4902             add_ldflags -Wl,-M,mapfile
4903         nm_default='nm -P -g'
4904         version_script='-M'
4905         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4906         ;;
4907     netbsd)
4908         disable symver
4909         oss_indev_extralibs="-lossaudio"
4910         oss_outdev_extralibs="-lossaudio"
4911         enabled gcc || check_ldflags -Wl,-zmuldefs
4912         ;;
4913     openbsd|bitrig)
4914         disable symver
4915         SHFLAGS='-shared'
4916         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4917         SLIB_INSTALL_LINKS=
4918         oss_indev_extralibs="-lossaudio"
4919         oss_outdev_extralibs="-lossaudio"
4920         ;;
4921     dragonfly)
4922         disable symver
4923         ;;
4924     freebsd)
4925         ;;
4926     bsd/os)
4927         add_extralibs -lpoll -lgnugetopt
4928         strip="strip -d"
4929         ;;
4930     darwin)
4931         enabled ppc && add_asflags -force_cpusubtype_ALL
4932         install_name_dir_default='$(SHLIBDIR)'
4933         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4934         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4935         strip="${strip} -x"
4936         add_ldflags -Wl,-dynamic,-search_paths_first
4937         check_cflags -Werror=partial-availability
4938         SLIBSUF=".dylib"
4939         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4940         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4941         enabled x86_64 && objformat="macho64" || objformat="macho32"
4942         enabled_any pic shared x86_64 ||
4943             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4944         check_header dispatch/dispatch.h &&
4945             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4946         if test -n "$sysroot"; then
4947             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4948             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4949         fi
4950         version_script='-exported_symbols_list'
4951         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4952         ;;
4953     msys*)
4954         die "Native MSYS builds are discouraged, please use the MINGW environment."
4955         ;;
4956     mingw32*|mingw64*)
4957         target_os=mingw32
4958         if enabled shared; then
4959             # Cannot build both shared and static libs when using dllexport.
4960             disable static
4961         fi
4962         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4963         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4964         shlibdir_default="$bindir_default"
4965         SLIBPREF=""
4966         SLIBSUF=".dll"
4967         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4968         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4969         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4970         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4971         SLIB_INSTALL_LINKS=
4972         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4973         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4974         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4975         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4976         enabled x86_64 && objformat="win64" || objformat="win32"
4977         ranlib=:
4978         enable dos_paths
4979         check_ldflags -Wl,--nxcompat,--dynamicbase
4980         # Lets work around some stupidity in binutils.
4981         # ld will strip relocations from executables even though we need them
4982         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4983         # however ld then forgets what the entry point should be (oops) so we
4984         # have to manually (re)set it.
4985         if enabled x86_32; then
4986             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4987         elif enabled x86_64; then
4988             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4989             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4990             # Set image base >4GB for extra entropy with HEASLR
4991             add_ldexeflags -Wl,--image-base,0x140000000
4992             append SHFLAGS -Wl,--image-base,0x180000000
4993         fi
4994         ;;
4995     win32|win64)
4996         disable symver
4997         if enabled shared; then
4998             # Link to the import library instead of the normal static library
4999             # for shared libs.
5000             LD_LIB='%.lib'
5001             # Cannot build both shared and static libs with MSVC or icl.
5002             disable static
5003         fi
5004         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5005         shlibdir_default="$bindir_default"
5006         SLIBPREF=""
5007         SLIBSUF=".dll"
5008         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5009         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5010         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5011         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5012         SLIB_INSTALL_LINKS=
5013         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5014         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5015         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5016         enabled x86_64 && objformat="win64" || objformat="win32"
5017         ranlib=:
5018         enable dos_paths
5019         ;;
5020     cygwin*)
5021         target_os=cygwin
5022         shlibdir_default="$bindir_default"
5023         SLIBPREF="cyg"
5024         SLIBSUF=".dll"
5025         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5026         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5027         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5028         SLIB_INSTALL_LINKS=
5029         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5030         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5031         enabled x86_64 && objformat="win64" || objformat="win32"
5032         enable dos_paths
5033         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5034         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5035         ;;
5036     *-dos|freedos|opendos)
5037         network_extralibs="-lsocket"
5038         objformat="coff"
5039         enable dos_paths
5040         add_cppflags -U__STRICT_ANSI__
5041         ;;
5042     linux)
5043         enable section_data_rel_ro
5044         enabled_any arm aarch64 && enable_weak linux_perf
5045         ;;
5046     irix*)
5047         target_os=irix
5048         ranlib="echo ignoring ranlib"
5049         ;;
5050     os/2*)
5051         strip="lxlite -CS"
5052         striptype=""
5053         objformat="aout"
5054         add_cppflags -D_GNU_SOURCE
5055         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5056         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5057         LIBSUF="_s.a"
5058         SLIBPREF=""
5059         SLIBSUF=".dll"
5060         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5061         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5062         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5063             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5064             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5065             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5066             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5067         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5068             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5069         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5070         SLIB_INSTALL_LINKS=
5071         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5072         enable dos_paths
5073         enable_weak os2threads
5074         ;;
5075     gnu/kfreebsd)
5076         add_cppflags -D_BSD_SOURCE
5077         ;;
5078     gnu)
5079         ;;
5080     qnx)
5081         add_cppflags -D_QNX_SOURCE
5082         network_extralibs="-lsocket"
5083         ;;
5084     symbian)
5085         SLIBSUF=".dll"
5086         enable dos_paths
5087         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5088         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5089         add_ldflags -Wl,--target1-abs,--no-undefined \
5090                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5091                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5092         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5093                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5094                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5095         ;;
5096     minix)
5097         ;;
5098     none)
5099         ;;
5100     *)
5101         die "Unknown OS '$target_os'."
5102         ;;
5103 esac
5104
5105 # test if creating links works
5106 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5107 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5108 mkdir "$link_dest"
5109 $ln_s "$link_dest" "$link_name"
5110 touch "$link_dest/test_file"
5111 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5112     # create link to source path
5113     [ -e src ] && rm src
5114     $ln_s "$source_path" src
5115     source_link=src
5116 else
5117     # creating directory links doesn't work
5118     # fall back to using the full source path
5119     source_link="$source_path"
5120 fi
5121 # cleanup
5122 rm -r "$link_dest"
5123 rm -r "$link_name"
5124
5125 # determine libc flavour
5126
5127 probe_libc(){
5128     pfx=$1
5129     pfx_no_=${pfx%_}
5130     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5131     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5132         eval ${pfx}libc_type=uclibc
5133         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5134     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5135         eval ${pfx}libc_type=glibc
5136         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5137     # MinGW headers can be installed on Cygwin, so check for newlib first.
5138     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5139         eval ${pfx}libc_type=newlib
5140         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5141     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5142     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5143         eval ${pfx}libc_type=mingw64
5144         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5145             add_compat msvcrt/snprintf.o
5146             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5147         fi
5148         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5149         eval test \$${pfx_no_}cc_type = "gcc" &&
5150             add_${pfx}cppflags -D__printf__=__gnu_printf__
5151     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5152          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5153         eval ${pfx}libc_type=mingw32
5154         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5155             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5156             die "ERROR: MinGW32 runtime version must be >= 3.15."
5157         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5158         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5159             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5160         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5161             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5162         eval test \$${pfx_no_}cc_type = "gcc" &&
5163             add_${pfx}cppflags -D__printf__=__gnu_printf__
5164     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5165         eval ${pfx}libc_type=msvcrt
5166         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5167             if [ "$pfx" = host_ ]; then
5168                 add_host_cppflags -Dsnprintf=_snprintf
5169             else
5170                 add_compat strtod.o strtod=avpriv_strtod
5171                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5172                                              _snprintf=avpriv_snprintf  \
5173                                              vsnprintf=avpriv_vsnprintf
5174             fi
5175         fi
5176         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5177         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5178         # 0x601 by default unless something else is set by the user.
5179         # This can easily lead to us detecting functions only present
5180         # in such new versions and producing binaries requiring windows 7.0.
5181         # Therefore explicitly set the default to XP unless the user has
5182         # set something else on the command line.
5183         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5184         # family. For these cases, configure is free to use any functions
5185         # found in the SDK headers by default. (Alternatively, we could force
5186         # _WIN32_WINNT to 0x0602 in that case.)
5187         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5188             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5189 #ifdef WINAPI_FAMILY
5190 #include <winapifamily.h>
5191 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5192 #error not desktop
5193 #endif
5194 #endif
5195 EOF
5196         if [ "$pfx" = "" ]; then
5197             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5198             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5199         fi
5200     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5201         eval ${pfx}libc_type=klibc
5202     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5203         eval ${pfx}libc_type=bionic
5204     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5205         eval ${pfx}libc_type=solaris
5206         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5207     fi
5208     check_${pfx}cc <<EOF
5209 #include <time.h>
5210 void *v = localtime_r;
5211 EOF
5212 test "$?" != 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
5213 #include <time.h>
5214 void *v = localtime_r;
5215 EOF
5216
5217     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5218 }
5219
5220 probe_libc
5221 probe_libc host_
5222
5223 # hacks for compiler/libc/os combinations
5224
5225 case $libc_type in
5226     bionic)
5227         add_compat strtod.o strtod=avpriv_strtod
5228         ;;
5229 esac
5230
5231 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5232     add_cppflags '-I\$(SRC_PATH)/compat/float'
5233
5234 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5235
5236 set_default libdir
5237 : ${shlibdir_default:="$libdir"}
5238 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5239
5240 set_default $PATHS_LIST
5241 set_default nm
5242
5243 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5244
5245 enable_weak_pic() {
5246     disabled pic && return
5247     enable pic
5248     add_cppflags -DPIC
5249     case "$target_os" in
5250     mingw*|cygwin*|win*)
5251         ;;
5252     *)
5253         add_cflags -fPIC
5254         add_asflags -fPIC
5255         ;;
5256     esac
5257 }
5258
5259 enabled pic && enable_weak_pic
5260
5261 check_cc <<EOF || die "Symbol mangling check failed."
5262 int ff_extern;
5263 EOF
5264 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5265 extern_prefix=${sym%%ff_extern*}
5266
5267 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5268
5269 _restrict=
5270 for restrict_keyword in restrict __restrict__ __restrict; do
5271     check_cc <<EOF && _restrict=$restrict_keyword && break
5272 void foo(char * $restrict_keyword p);
5273 EOF
5274 done
5275
5276 check_cc <<EOF && enable pragma_deprecated
5277 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5278 EOF
5279
5280 check_cc <<EOF || die "endian test failed"
5281 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5282 EOF
5283 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5284
5285 check_cc <<EOF && enable const_nan
5286 #include <math.h>
5287 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5288 EOF
5289
5290 if ! enabled ppc64 || enabled bigendian; then
5291     disable vsx
5292 fi
5293
5294 check_gas() {
5295     log "check_gas using '$as' as AS"
5296     # :vararg is used on aarch64, arm and ppc altivec
5297     check_as <<EOF || return 1
5298 .macro m n, y:vararg=0
5299 \n: .int \y
5300 .endm
5301 m x
5302 EOF
5303     # .altmacro is only used in arm asm
5304     ! enabled arm || check_as <<EOF || return 1
5305 .altmacro
5306 EOF
5307     enable gnu_as
5308     return 0
5309 }
5310
5311 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5312     nogas=:
5313     enabled_any arm aarch64 && nogas=die
5314     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5315     as_noop=-v
5316
5317     case $as_type in
5318         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5319         gcc)  gaspp_as_type=gas ;;
5320         *)    gaspp_as_type=$as_type ;;
5321     esac
5322
5323     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5324
5325     test "${as#*gas-preprocessor.pl}" != "$as" ||
5326     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5327         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5328
5329     if ! check_gas ; then
5330         as=${gas:=$as}
5331         check_gas || \
5332             $nogas "GNU assembler not found, install/update gas-preprocessor"
5333     fi
5334
5335     check_as <<EOF && enable as_func
5336 .func test
5337 .endfunc
5338 EOF
5339 fi
5340
5341 check_inline_asm inline_asm_labels '"1:\n"'
5342
5343 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5344
5345 if enabled aarch64; then
5346     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5347     # internal assembler in clang 3.3 does not support this instruction
5348     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5349     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5350
5351     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5352
5353 elif enabled alpha; then
5354
5355     check_cflags -mieee
5356
5357 elif enabled arm; then
5358
5359     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5360
5361     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5362 float func(float a, float b){ return a+b; }
5363 EOF
5364
5365     enabled thumb && check_cflags -mthumb || check_cflags -marm
5366
5367     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5368         enable vfp_args
5369     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5370         enable vfp_args
5371     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5372         case "${cross_prefix:-$cc}" in
5373             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5374             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5375 __asm__ (".eabi_attribute 28, 1");
5376 int main(void) { return 0; }
5377 EOF
5378         esac
5379         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5380     fi
5381
5382     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5383     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5384     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5385     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5386     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5387     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5388     enabled setend  && check_insn setend  'setend be'
5389
5390     [ $target_os = linux ] || [ $target_os = android ] ||
5391         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5392             $ARCH_EXT_LIST_ARM
5393
5394     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5395
5396     check_as <<EOF && enable as_arch_directive
5397 .arch armv7-a
5398 EOF
5399     check_as <<EOF && enable as_fpu_directive
5400 .fpu neon
5401 EOF
5402
5403     # llvm's integrated assembler supports .object_arch from llvm 3.5
5404     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5405         check_as <<EOF && enable as_object_arch
5406 .object_arch armv4
5407 EOF
5408
5409     # MS armasm fails to assemble our PIC constructs
5410     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5411
5412 elif enabled mips; then
5413
5414     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5415     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5416     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5417
5418     # Enable minimum ISA based on selected options
5419     if enabled mips64; then
5420         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5421         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5422         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5423     else
5424         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5425         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5426         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5427         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5428     fi
5429
5430     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5431     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5432     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5433     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5434     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5435
5436     if enabled bigendian && enabled msa; then
5437         disable msa
5438     fi
5439
5440 elif enabled parisc; then
5441
5442     if enabled gcc; then
5443         case $($cc -dumpversion) in
5444             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5445         esac
5446     fi
5447
5448 elif enabled ppc; then
5449
5450     enable local_aligned
5451
5452     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5453     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5454     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5455     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5456
5457     if enabled altivec; then
5458         check_cflags -maltivec -mabi=altivec
5459
5460         # check if our compiler supports Motorola AltiVec C API
5461         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5462                                  vector signed int v2 = (vector signed int) { 1 };
5463                                  v1 = vec_add(v1, v2);" ||
5464             disable altivec
5465
5466         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5467     fi
5468
5469     if enabled vsx; then
5470         check_cflags -mvsx &&
5471         check_code cc altivec.h "int v[4] = { 0 };
5472                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5473             disable vsx
5474     fi
5475
5476     if enabled power8; then
5477         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5478     fi
5479
5480 elif enabled x86; then
5481
5482     check_builtin rdtsc    intrin.h   "__rdtsc()"
5483     check_builtin mm_empty mmintrin.h "_mm_empty()"
5484
5485     enable local_aligned
5486
5487     # check whether EBP is available on x86
5488     # As 'i' is stored on the stack, this program will crash
5489     # if the base pointer is used to access it because the
5490     # base pointer is cleared in the inline assembly code.
5491     check_exec_crash <<EOF && enable ebp_available
5492 volatile int i=0;
5493 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5494 return i;
5495 EOF
5496
5497     # check whether EBX is available on x86
5498     check_inline_asm ebx_available '""::"b"(0)' &&
5499         check_inline_asm ebx_available '"":::"%ebx"'
5500
5501     # check whether xmm clobbers are supported
5502     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5503
5504     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5505         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5506
5507     # check whether binutils is new enough to compile SSSE3/MMXEXT
5508     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5509     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5510
5511     probe_x86asm(){
5512         x86asmexe_probe=$1
5513         if check_cmd $x86asmexe_probe -v; then
5514             x86asmexe=$x86asmexe_probe
5515             x86asm_type=nasm
5516             x86asm_debug="-g -F dwarf"
5517             X86ASMDEP=
5518             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5519         elif check_cmd $x86asmexe_probe --version; then
5520             x86asmexe=$x86asmexe_probe
5521             x86asm_type=yasm
5522             x86asm_debug="-g dwarf2"
5523             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5524             X86ASM_DEPFLAGS=
5525         fi
5526         check_x86asm "movbe ecx, [5]" && enable x86asm
5527     }
5528
5529     if ! disabled_any asm mmx x86asm; then
5530         disable x86asm
5531         for program in $x86asmexe nasm yasm; do
5532             probe_x86asm $program && break
5533         done
5534         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5535         X86ASMFLAGS="-f $objformat"
5536         enabled pic               && append X86ASMFLAGS "-DPIC"
5537         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5538         case "$objformat" in
5539             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5540         esac
5541
5542         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5543         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5544         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5545         check_x86asm "CPU amdnop" || disable cpunop
5546     fi
5547
5548     case "$cpu" in
5549         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5550             disable fast_clz
5551         ;;
5552     esac
5553
5554 fi
5555
5556 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5557
5558 check_ldflags -Wl,--as-needed
5559 check_ldflags -Wl,-z,noexecstack
5560
5561 if ! disabled network; then
5562     check_func getaddrinfo $network_extralibs
5563     check_func inet_aton $network_extralibs
5564
5565     check_type netdb.h "struct addrinfo"
5566     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5567     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5568     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5569     check_type poll.h "struct pollfd"
5570     check_type netinet/sctp.h "struct sctp_event_subscribe"
5571     check_struct "sys/socket.h" "struct msghdr" msg_flags
5572     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5573     check_type netinet/in.h "struct sockaddr_in6"
5574     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5575     check_type "sys/types.h sys/socket.h" socklen_t
5576
5577     # Prefer arpa/inet.h over winsock2
5578     if check_header arpa/inet.h ; then
5579         check_func closesocket
5580     elif check_header winsock2.h ; then
5581         check_func_headers winsock2.h closesocket -lws2 &&
5582             network_extralibs="-lws2" ||
5583         { check_func_headers winsock2.h closesocket -lws2_32 &&
5584             network_extralibs="-lws2_32"; } || disable winsock2_h network
5585         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5586
5587         check_type ws2tcpip.h socklen_t
5588         check_type ws2tcpip.h "struct addrinfo"
5589         check_type ws2tcpip.h "struct group_source_req"
5590         check_type ws2tcpip.h "struct ip_mreq_source"
5591         check_type ws2tcpip.h "struct ipv6_mreq"
5592         check_type winsock2.h "struct pollfd"
5593         check_struct winsock2.h "struct sockaddr" sa_len
5594         check_type ws2tcpip.h "struct sockaddr_in6"
5595         check_type ws2tcpip.h "struct sockaddr_storage"
5596     else
5597         disable network
5598     fi
5599 fi
5600
5601 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5602 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5603 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5604 check_builtin sarestart signal.h "SA_RESTART"
5605 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5606 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5607 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5608 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5609
5610 case "$custom_allocator" in
5611     jemalloc)
5612         # jemalloc by default does not use a prefix
5613         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5614     ;;
5615     tcmalloc)
5616         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5617         malloc_prefix=tc_
5618     ;;
5619 esac
5620
5621 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5622 check_func  ${malloc_prefix}memalign            && enable memalign
5623 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5624
5625 check_func  access
5626 check_func_headers stdlib.h arc4random
5627 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5628 check_func  fcntl
5629 check_func  fork
5630 check_func  gethrtime
5631 check_func  getopt
5632 check_func  getrusage
5633 check_func  gettimeofday
5634 check_func  isatty
5635 check_func  mkstemp
5636 check_func  mmap
5637 check_func  mprotect
5638 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5639 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5640 check_func  sched_getaffinity
5641 check_func  setrlimit
5642 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5643 check_func  strerror_r
5644 check_func  sysconf
5645 check_func  sysctl
5646 check_func  usleep
5647
5648 check_func_headers conio.h kbhit
5649 check_func_headers io.h setmode
5650 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5651 check_func_headers mach/mach_time.h mach_absolute_time
5652 check_func_headers stdlib.h getenv
5653 check_func_headers sys/stat.h lstat
5654
5655 check_func_headers windows.h GetProcessAffinityMask
5656 check_func_headers windows.h GetProcessTimes
5657 check_func_headers windows.h GetSystemTimeAsFileTime
5658 check_func_headers windows.h LoadLibrary
5659 check_func_headers windows.h MapViewOfFile
5660 check_func_headers windows.h PeekNamedPipe
5661 check_func_headers windows.h SetConsoleTextAttribute
5662 check_func_headers windows.h SetConsoleCtrlHandler
5663 check_func_headers windows.h Sleep
5664 check_func_headers windows.h VirtualAlloc
5665 check_struct windows.h "CONDITION_VARIABLE" Ptr
5666 check_func_headers glob.h glob
5667 enabled xlib &&
5668     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5669
5670 check_header direct.h
5671 check_header dirent.h
5672 check_header dxgidebug.h
5673 check_header dxva.h
5674 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5675 check_header io.h
5676 check_header libcrystalhd/libcrystalhd_if.h
5677 check_header malloc.h
5678 check_header net/udplite.h
5679 check_header poll.h
5680 check_header sys/param.h
5681 check_header sys/resource.h
5682 check_header sys/select.h
5683 check_header sys/time.h
5684 check_header sys/un.h
5685 check_header termios.h
5686 check_header unistd.h
5687 check_header valgrind/valgrind.h
5688 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5689 check_header windows.h
5690 check_header X11/extensions/XvMClib.h
5691 check_header asm/types.h
5692
5693 # it seems there are versions of clang in some distros that try to use the
5694 # gcc headers, which explodes for stdatomic
5695 # so we also check that atomics actually work here
5696 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5697
5698 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5699 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5700 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5701 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5702 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5703
5704 enabled appkit       && check_apple_framework AppKit
5705 enabled audiotoolbox && check_apple_framework AudioToolbox
5706 enabled avfoundation && check_apple_framework AVFoundation
5707 enabled coreimage    && check_apple_framework CoreImage
5708 enabled videotoolbox && check_apple_framework VideoToolbox
5709
5710 check_apple_framework CoreFoundation
5711 check_apple_framework CoreMedia
5712 check_apple_framework CoreVideo
5713
5714 enabled avfoundation && {
5715     disable coregraphics applicationservices
5716     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5717     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5718
5719 enabled videotoolbox && {
5720     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5721     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5722 }
5723
5724 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5725
5726 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5727 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5728 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5729 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5730 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5731
5732 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5733 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5734 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5735 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5736 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5737 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5738 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5739 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5740 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5741
5742 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5743
5744 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5745
5746 if ! disabled w32threads && ! enabled pthreads; then
5747     check_func_headers "windows.h process.h" _beginthreadex &&
5748         enable w32threads || disable w32threads
5749     if ! enabled w32threads && enabled winrt; then
5750         check_func_headers "windows.h" CreateThread &&
5751             enable w32threads || disable w32threads
5752     fi
5753 fi
5754
5755 # check for some common methods of building with pthread support
5756 # do this before the optional library checks as some of them require pthreads
5757 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5758     if check_lib pthreads pthread.h pthread_join   -pthread &&
5759        check_lib pthreads pthread.h pthread_create -pthread; then
5760         add_cflags -pthread
5761     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5762          check_lib pthreads pthread.h pthread_create -pthreads; then
5763         add_cflags -pthreads
5764     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5765          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5766         add_cflags -ldl -pthread
5767     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5768          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5769         :
5770     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5771          check_lib pthreads pthread.h pthread_create -lpthread; then
5772         :
5773     elif check_func pthread_join && check_func pthread_create; then
5774         enable pthreads
5775     fi
5776     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5777
5778     if enabled pthreads; then
5779         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5780         check_func pthread_cancel $pthreads_extralibs
5781     fi
5782 fi
5783
5784 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5785 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5786 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5787
5788 # On some systems dynamic loading requires no extra linker flags
5789 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5790
5791 check_lib libm math.h sin -lm
5792
5793 atan2f_args=2
5794 copysign_args=2
5795 hypot_args=2
5796 ldexpf_args=2
5797 powf_args=2
5798
5799 for func in $MATH_FUNCS; do
5800     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5801 done
5802
5803 for func in $COMPLEX_FUNCS; do
5804     eval check_complexfunc $func \${${func}_args:-1}
5805 done
5806
5807 # these are off by default, so fail if requested and not available
5808 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5809 enabled cuvid             && { enabled cuda ||
5810                                die "ERROR: CUVID requires CUDA"; }
5811 enabled nvdec             && { enabled cuda ||
5812                                die "ERROR: NVDEC hwaccel requires CUDA"; }
5813 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5814 enabled decklink          && { require_header DeckLinkAPI.h &&
5815                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5816 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5817 enabled frei0r            && require_header frei0r.h
5818 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5819 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5820 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5821 enabled ladspa            && require_header ladspa.h
5822 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5823 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5824 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5825 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5826 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5827                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5828                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5829 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5830 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5831 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5832 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5833                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5834                                  warn "using libfdk without pkg-config"; } }
5835 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"
5836 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5837 enabled fontconfig        && enable libfontconfig
5838 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5839 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5840 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5841 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5842                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5843 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5844                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5845                                done || die "ERROR: libgsm not found"; }
5846 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5847 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5848 # While it may appear that require is being used as a pkg-config
5849 # fallback for libmfx, it is actually being used to detect a different
5850 # installation route altogether.  If libmfx is installed via the Intel
5851 # Media SDK or Intel Media Server Studio, these don't come with
5852 # pkg-config support.  Instead, users should make sure that the build
5853 # can find the libraries and headers through other means.
5854 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5855                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5856 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5857 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5858 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5859 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5860                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5861                                die "ERROR: libnpp not found"; }
5862 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5863 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5864 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5865                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5866                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5867                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5868 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5869 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5870                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5871 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5872 enabled libopus           && {
5873     enabled libopus_decoder && {
5874         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5875     }
5876     enabled libopus_encoder && {
5877         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5878     }
5879 }
5880 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5881 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5882 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5883 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5884 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5885 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5886                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5887 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5888 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5889 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5890 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5891 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5892 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5893 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5894                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5895                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5896 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5897 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5898 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5899 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5900 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5901                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5902
5903 enabled libvpx            && {
5904     enabled libvpx_vp8_decoder && {
5905         check_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5906             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5907                 die "ERROR: libvpx decoder version must be >=0.9.1";
5908     }
5909     enabled libvpx_vp8_encoder && {
5910         check_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5911             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5912                 die "ERROR: libvpx encoder version must be >=0.9.7";
5913     }
5914     enabled libvpx_vp9_decoder && {
5915         check_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5916             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5917     }
5918     enabled libvpx_vp9_encoder && {
5919         check_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5920             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5921     }
5922     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5923         die "libvpx enabled but no supported decoders found"
5924     fi
5925 }
5926
5927 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5928 enabled libwebp           && {
5929     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5930     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5931 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5932                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5933                                  warn "using libx264 without pkg-config"; } } &&
5934                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5935                              { check_cpp_condition x264.h "X264_MPEG2" &&
5936                                enable libx262; }
5937 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5938                              require_cpp_condition x265.h "X265_BUILD >= 68"
5939 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5940 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5941 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
5942 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5943 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5944                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5945                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5946 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5947 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5948 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5949                                { ! enabled cross_compile &&
5950                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5951                                  add_ldflags -L/opt/vc/lib/ &&
5952                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5953                                die "ERROR: mmal not found" &&
5954                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5955 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5956                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5957                                die "ERROR: openal not found"; } &&
5958                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5959                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5960 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5961                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5962                                die "ERROR: opencl not found"; } &&
5963                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5964                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5965                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5966 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5967                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5968                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5969                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5970                                die "ERROR: opengl not found."
5971                              }
5972 enabled omx               && require_header OMX_Core.h
5973 enabled omx_rpi           && { check_header OMX_Core.h ||
5974                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5975                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5976 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5977                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5978                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5979                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5980                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5981                                die "ERROR: openssl not found"; }
5982 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
5983                                  die "ERROR : Rockchip MPP was not found."; } &&
5984                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
5985                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
5986                                { enabled libdrm ||
5987                                  die "ERROR: rkmpp requires --enable-libdrm"; }
5988                              }
5989
5990 if enabled gcrypt; then
5991     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5992     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5993         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5994         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5995         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5996             die "ERROR: gcrypt not found"
5997         add_cflags $gcrypt_cflags
5998     else
5999         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6000     fi
6001 fi
6002
6003 if enabled sdl2; then
6004     SDL2_CONFIG="${cross_prefix}sdl2-config"
6005     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6006         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6007             disable sdl2
6008     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6009         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6010         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6011         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6012         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6013         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6014             enable sdl2
6015     fi
6016     if test $target_os = "mingw32"; then
6017         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6018     fi
6019 fi
6020
6021 if enabled decklink; then
6022     case $target_os in
6023         mingw32*|mingw64*|win32|win64)
6024             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6025             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6026             ;;
6027     esac
6028 fi
6029
6030 enabled securetransport &&
6031     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6032     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6033         disable securetransport
6034
6035 enabled securetransport &&
6036     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6037
6038 enabled schannel &&
6039     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6040     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6041     schannel_extralibs="-lsecur32" ||
6042         disable schannel
6043
6044 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6045 enabled makeinfo \
6046     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6047     && enable makeinfo_html || disable makeinfo_html
6048 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6049 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6050 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6051 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6052
6053 # check V4L2 codecs available in the API
6054 check_header linux/fb.h
6055 check_header linux/videodev2.h
6056 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6057 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6058 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6059 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6060 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6061 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6062 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6063 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6064 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6065 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6066 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6067
6068 check_header sys/videoio.h
6069 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6070
6071 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6072 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6073 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6074 # w32api 3.12 had it defined wrong
6075 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6076
6077 check_type "dshow.h" IBaseFilter
6078
6079 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6080 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6081     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6082     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6083     check_header "dev/ic/bt8xx.h"
6084
6085 if check_struct sys/soundcard.h audio_buf_info bytes; then
6086     enable_sanitized sys/soundcard.h
6087 else
6088     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6089     #include <sys/soundcard.h>
6090     audio_buf_info abc;
6091 EOF
6092 fi
6093
6094 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6095     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6096
6097 enabled libjack &&
6098     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6099
6100 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6101
6102 if enabled libcdio; then
6103     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6104     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6105     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6106     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6107     die "ERROR: No usable libcdio/cdparanoia found"
6108 fi
6109
6110 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6111     disable libxcb_shm libxcb_shape libxcb_xfixes
6112
6113 if enabled libxcb; then
6114     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6115     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6116     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6117 fi
6118
6119 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6120
6121 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6122 # the desktop api partition
6123 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6124 #ifdef WINAPI_FAMILY
6125 #include <winapifamily.h>
6126 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6127 #error desktop, not uwp
6128 #else
6129 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6130 #endif
6131 #else
6132 #error no family set
6133 #endif
6134 EOF
6135
6136 enabled vaapi &&
6137     check_lib vaapi va/va.h vaInitialize -lva
6138
6139 enabled vaapi &&
6140     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6141     disable vaapi
6142
6143 enabled vaapi &&
6144     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6145
6146 enabled vaapi &&
6147     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6148
6149 enabled vaapi &&
6150     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6151     enable vaapi_1
6152
6153 enabled vdpau &&
6154     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6155     disable vdpau
6156
6157 enabled vdpau &&
6158     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6159
6160 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6161
6162 if enabled x86; then
6163     case $target_os in
6164         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6165             ;;
6166         *)
6167             disable cuda cuvid nvdec nvenc
6168             ;;
6169     esac
6170 else
6171     disable cuda cuvid nvdec nvenc
6172 fi
6173
6174 enabled nvenc &&
6175     check_cc -I$source_path <<EOF || disable nvenc
6176 #include "compat/nvenc/nvEncodeAPI.h"
6177 NV_ENCODE_API_FUNCTION_LIST flist;
6178 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6179 int main(void) { return 0; }
6180 EOF
6181
6182 # Funny iconv installations are not unusual, so check it after all flags have been set
6183 if enabled libc_iconv; then
6184     check_func_headers iconv.h iconv
6185 elif enabled iconv; then
6186     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6187 fi
6188
6189 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6190
6191 # add some useful compiler flags if supported
6192 check_cflags -Wdeclaration-after-statement
6193 check_cflags -Wall
6194 check_cflags -Wdisabled-optimization
6195 check_cflags -Wpointer-arith
6196 check_cflags -Wredundant-decls
6197 check_cflags -Wwrite-strings
6198 check_cflags -Wtype-limits
6199 check_cflags -Wundef
6200 check_cflags -Wmissing-prototypes
6201 check_cflags -Wno-pointer-to-int-cast
6202 check_cflags -Wstrict-prototypes
6203 check_cflags -Wempty-body
6204
6205 if enabled extra_warnings; then
6206     check_cflags -Wcast-qual
6207     check_cflags -Wextra
6208     check_cflags -Wpedantic
6209 fi
6210
6211 check_disable_warning(){
6212     warning_flag=-W${1#-Wno-}
6213     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6214 }
6215
6216 test_cflags -Werror=unused-command-line-argument &&
6217     append unknown_warning_flags "-Werror=unused-command-line-argument"
6218 test_cflags -Werror=unknown-warning-option &&
6219     append unknown_warning_flags "-Werror=unknown-warning-option"
6220
6221 check_disable_warning -Wno-parentheses
6222 check_disable_warning -Wno-switch
6223 check_disable_warning -Wno-format-zero-length
6224 check_disable_warning -Wno-pointer-sign
6225 check_disable_warning -Wno-unused-const-variable
6226 check_disable_warning -Wno-bool-operation
6227
6228 check_disable_warning_headers(){
6229     warning_flag=-W${1#-Wno-}
6230     test_cflags $warning_flag && add_cflags_headers $1
6231 }
6232
6233 check_disable_warning_headers -Wno-deprecated-declarations
6234 check_disable_warning_headers -Wno-unused-variable
6235
6236 check_cc <<EOF && enable blocks_extension
6237 void (^block)(void);
6238 EOF
6239
6240 # add some linker flags
6241 check_ldflags -Wl,--warn-common
6242 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6243 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6244 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6245
6246 # add some strip flags
6247 check_stripflags -x
6248
6249 enabled neon_clobber_test &&
6250     check_ldflags -Wl,--wrap,avcodec_open2              \
6251                   -Wl,--wrap,avcodec_decode_audio4      \
6252                   -Wl,--wrap,avcodec_decode_video2      \
6253                   -Wl,--wrap,avcodec_decode_subtitle2   \
6254                   -Wl,--wrap,avcodec_encode_audio2      \
6255                   -Wl,--wrap,avcodec_encode_video2      \
6256                   -Wl,--wrap,avcodec_encode_subtitle    \
6257                   -Wl,--wrap,avcodec_send_packet        \
6258                   -Wl,--wrap,avcodec_receive_packet     \
6259                   -Wl,--wrap,avcodec_send_frame         \
6260                   -Wl,--wrap,avcodec_receive_frame      \
6261                   -Wl,--wrap,swr_convert                \
6262                   -Wl,--wrap,avresample_convert ||
6263     disable neon_clobber_test
6264
6265 enabled xmm_clobber_test &&
6266     check_ldflags -Wl,--wrap,avcodec_open2              \
6267                   -Wl,--wrap,avcodec_decode_audio4      \
6268                   -Wl,--wrap,avcodec_decode_video2      \
6269                   -Wl,--wrap,avcodec_decode_subtitle2   \
6270                   -Wl,--wrap,avcodec_encode_audio2      \
6271                   -Wl,--wrap,avcodec_encode_video2      \
6272                   -Wl,--wrap,avcodec_encode_subtitle    \
6273                   -Wl,--wrap,avcodec_send_packet        \
6274                   -Wl,--wrap,avcodec_receive_packet     \
6275                   -Wl,--wrap,avcodec_send_frame         \
6276                   -Wl,--wrap,avcodec_receive_frame      \
6277                   -Wl,--wrap,swr_convert                \
6278                   -Wl,--wrap,avresample_convert         \
6279                   -Wl,--wrap,sws_scale ||
6280     disable xmm_clobber_test
6281
6282 check_ld "cc" <<EOF && enable proper_dce
6283 extern const int array[512];
6284 static inline int func(void) { return array[0]; }
6285 int main(void) { return 0; }
6286 EOF
6287
6288 if enabled proper_dce; then
6289     echo "X { local: *; };" > $TMPV
6290     if test_ldflags -Wl,${version_script},$TMPV; then
6291         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6292         quotes='""'
6293         check_cc <<EOF && enable symver_asm_label
6294 void ff_foo(void) __asm__ ("av_foo@VERSION");
6295 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6296 EOF
6297         check_cc <<EOF && enable symver_gnu_asm
6298 __asm__(".symver ff_foo,av_foo@VERSION");
6299 void ff_foo(void) {}
6300 EOF
6301     fi
6302 fi
6303
6304 if [ -z "$optflags" ]; then
6305     if enabled small; then
6306         optflags=$cflags_size
6307     elif enabled optimizations; then
6308         optflags=$cflags_speed
6309     else
6310         optflags=$cflags_noopt
6311     fi
6312 fi
6313
6314 if [ -z "$nvccflags" ]; then
6315     nvccflags=$nvccflags_default
6316 fi
6317
6318 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6319     nvccflags="$nvccflags -m64"
6320 else
6321     nvccflags="$nvccflags -m32"
6322 fi
6323
6324 check_optflags(){
6325     check_cflags "$@"
6326     enabled lto && check_ldflags "$@"
6327 }
6328
6329 check_optflags $optflags
6330 check_optflags -fno-math-errno
6331 check_optflags -fno-signed-zeros
6332
6333 if enabled lto; then
6334     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6335     check_cflags  -flto
6336     check_ldflags -flto $cpuflags
6337     disable inline_asm_direct_symbol_refs
6338 fi
6339
6340 enabled ftrapv && check_cflags -ftrapv
6341
6342 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6343 int x;
6344 EOF
6345
6346
6347 if enabled icc; then
6348     # Just warnings, no remarks
6349     check_cflags -w1
6350     # -wd: Disable following warnings
6351     # 144, 167, 556: -Wno-pointer-sign
6352     # 188: enumerated type mixed with another type
6353     # 1292: attribute "foo" ignored
6354     # 1419: external declaration in primary source file
6355     # 10006: ignoring unknown option -fno-signed-zeros
6356     # 10148: ignoring unknown option -Wno-parentheses
6357     # 10156: ignoring option '-W'; no argument required
6358     # 13200: No EMMS instruction before call to function
6359     # 13203: No EMMS instruction before return from function
6360     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6361     # 11030: Warning unknown option --as-needed
6362     # 10156: ignoring option '-export'; no argument required
6363     check_ldflags -wd10156,11030
6364     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6365     enable ebp_available
6366     # The test above does not test linking
6367     enabled lto && disable symver_asm_label
6368     if enabled x86_32; then
6369         icc_version=$($cc -dumpversion)
6370         test ${icc_version%%.*} -ge 11 &&
6371             check_cflags -falign-stack=maintain-16-byte ||
6372             disable aligned_stack
6373     fi
6374 elif enabled gcc; then
6375     check_optflags -fno-tree-vectorize
6376     check_cflags -Werror=format-security
6377     check_cflags -Werror=implicit-function-declaration
6378     check_cflags -Werror=missing-prototypes
6379     check_cflags -Werror=return-type
6380     check_cflags -Werror=vla
6381     check_cflags -Wformat
6382     check_cflags -fdiagnostics-color=auto
6383     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6384 elif enabled llvm_gcc; then
6385     check_cflags -mllvm -stack-alignment=16
6386 elif enabled clang; then
6387     check_cflags -mllvm -stack-alignment=16
6388     check_cflags -mstack-alignment=16
6389     check_cflags -Qunused-arguments
6390     check_cflags -Werror=implicit-function-declaration
6391     check_cflags -Werror=missing-prototypes
6392     check_cflags -Werror=return-type
6393 elif enabled cparser; then
6394     add_cflags -Wno-missing-variable-declarations
6395     add_cflags -Wno-empty-statement
6396 elif enabled armcc; then
6397     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6398     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6399     # 2523: use of inline assembly is deprecated
6400     add_cflags -W${armcc_opt},--diag_suppress=2523
6401     add_cflags -W${armcc_opt},--diag_suppress=1207
6402     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6403     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6404     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6405     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6406 elif enabled pathscale; then
6407     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6408     disable inline_asm
6409 elif enabled_any msvc icl; then
6410     enabled x86_32 && disable aligned_stack
6411     enabled_all x86_32 debug && add_cflags -Oy-
6412     enabled debug && add_ldflags -debug
6413     enable pragma_deprecated
6414     if enabled icl; then
6415         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6416         # (correctly) on icl 13.x.
6417         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6418             add_cflags -Qansi-alias
6419         # Some inline asm is not compilable in debug
6420         if enabled debug; then
6421             disable ebp_available
6422             disable ebx_available
6423         fi
6424     fi
6425     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6426     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6427     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6428     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6429     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6430     # MSVC 2013 and newer can handle it fine.
6431     # If this declspec fails, force including stdlib.h before the restrict redefinition
6432     # happens in config.h.
6433     if [ $_restrict != restrict ]; then
6434         check_cc <<EOF || add_cflags -FIstdlib.h
6435 __declspec($_restrict) void* foo(int);
6436 EOF
6437     fi
6438     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6439     # Issue has been fixed in MSVC v19.00.24218.
6440     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6441         check_cflags -d2SSAOptimizer-
6442     # enable utf-8 source processing on VS2015 U2 and newer
6443     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6444         add_cflags -utf-8
6445 fi
6446
6447 for pfx in "" host_; do
6448     varname=${pfx%_}cc_type
6449     eval "type=\$$varname"
6450     if [ "$type" = "msvc" ]; then
6451         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6452 static inline int foo(int a) { return a; }
6453 EOF
6454     fi
6455 done
6456
6457 case $as_type in
6458     clang)
6459         add_asflags -Qunused-arguments
6460     ;;
6461 esac
6462
6463 case $ld_type in
6464     clang)
6465         check_ldflags -Qunused-arguments
6466     ;;
6467 esac
6468
6469 enable frame_thread_encoder
6470
6471 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6472
6473 check_deps $CONFIG_LIST       \
6474            $CONFIG_EXTRA      \
6475            $HAVE_LIST         \
6476            $ALL_COMPONENTS    \
6477
6478 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"
6479
6480
6481 if test $target_os = "haiku"; then
6482     disable memalign
6483     disable posix_memalign
6484 fi
6485
6486 flatten_extralibs(){
6487     unset nested_entries
6488     list_name=$1
6489     eval list=\$${1}
6490     for entry in $list; do
6491         entry_copy=$entry
6492         resolve entry_copy
6493         append nested_entries $(filter '*_extralibs' $entry_copy)
6494         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6495         eval $entry="\$flat_entries"
6496     done
6497     append $list_name "$nested_entries"
6498
6499     resolve nested_entries
6500     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6501         flatten_extralibs $list_name
6502     fi
6503 }
6504
6505 for linkunit in $LIBRARY_LIST; do
6506     unset current_extralibs
6507     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6508     for comp in ${components}; do
6509         enabled $comp || continue
6510         comp_extralibs="${comp}_extralibs"
6511         append current_extralibs $comp_extralibs
6512     done
6513     eval prepend ${linkunit}_extralibs $current_extralibs
6514 done
6515
6516 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6517     flatten_extralibs ${linkunit}_extralibs
6518     unique  ${linkunit}_extralibs
6519     resolve ${linkunit}_extralibs
6520     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
6521 done
6522
6523 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6524
6525 for thread in $THREADS_LIST; do
6526     if enabled $thread; then
6527         test -n "$thread_type" &&
6528             die "ERROR: Only one thread type must be selected." ||
6529             thread_type="$thread"
6530     fi
6531 done
6532
6533 if disabled stdatomic; then
6534     if enabled atomics_gcc; then
6535         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6536     elif enabled atomics_win32; then
6537         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6538     elif enabled atomics_suncc; then
6539         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6540     elif enabled pthreads; then
6541         add_compat atomics/pthread/stdatomic.o
6542         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6543     else
6544         enabled threads && die "Threading is enabled, but no atomics are available"
6545         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6546     fi
6547 fi
6548
6549 # Check if requested libraries were found.
6550 for lib in $AUTODETECT_LIBS; do
6551     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6552 done
6553
6554 enabled zlib && add_cppflags -DZLIB_CONST
6555
6556 # conditional library dependencies, in linking order
6557 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6558 enabled afir_filter         && prepend avfilter_deps "avcodec"
6559 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6560 enabled aresample_filter    && prepend avfilter_deps "swresample"
6561 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6562 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6563 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6564 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6565 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6566 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6567 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6568 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6569 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6570 enabled pan_filter          && prepend avfilter_deps "swresample"
6571 enabled pp_filter           && prepend avfilter_deps "postproc"
6572 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6573 enabled resample_filter && prepend avfilter_deps "avresample"
6574 enabled sab_filter          && prepend avfilter_deps "swscale"
6575 enabled scale_filter    && prepend avfilter_deps "swscale"
6576 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6577 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6578 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6579 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6580 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6581 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6582 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6583 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6584 enabled spp_filter          && prepend avfilter_deps "avcodec"
6585 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6586 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6587 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6588
6589 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6590
6591 #FIXME
6592 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6593
6594 enabled opus_decoder    && prepend avcodec_deps "swresample"
6595
6596 expand_deps(){
6597     lib_deps=${1}_deps
6598     eval "deps=\$$lib_deps"
6599     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6600     unique $lib_deps
6601 }
6602
6603 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6604 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6605
6606 map 'expand_deps $v' $LIBRARY_LIST
6607
6608 license="LGPL version 2.1 or later"
6609 if enabled nonfree; then
6610     license="nonfree and unredistributable"
6611 elif enabled gplv3; then
6612     license="GPL version 3 or later"
6613 elif enabled lgplv3; then
6614     license="LGPL version 3 or later"
6615 elif enabled gpl; then
6616     license="GPL version 2 or later"
6617 fi
6618
6619 if test "$quiet" != "yes"; then
6620
6621 echo "install prefix            $prefix"
6622 echo "source path               $source_path"
6623 echo "C compiler                $cc"
6624 echo "C library                 $libc_type"
6625 if test "$host_cc" != "$cc"; then
6626     echo "host C compiler           $host_cc"
6627     echo "host C library            $host_libc_type"
6628 fi
6629 echo "ARCH                      $arch ($cpu)"
6630 if test "$build_suffix" != ""; then
6631     echo "build suffix              $build_suffix"
6632 fi
6633 if test "$progs_suffix" != ""; then
6634     echo "progs suffix              $progs_suffix"
6635 fi
6636 if test "$extra_version" != ""; then
6637     echo "version string suffix     $extra_version"
6638 fi
6639 echo "big-endian                ${bigendian-no}"
6640 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6641 if enabled x86; then
6642     echo "standalone assembly       ${x86asm-no}"
6643     echo "x86 assembler             ${x86asmexe}"
6644     echo "MMX enabled               ${mmx-no}"
6645     echo "MMXEXT enabled            ${mmxext-no}"
6646     echo "3DNow! enabled            ${amd3dnow-no}"
6647     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6648     echo "SSE enabled               ${sse-no}"
6649     echo "SSSE3 enabled             ${ssse3-no}"
6650     echo "AESNI enabled             ${aesni-no}"
6651     echo "AVX enabled               ${avx-no}"
6652     echo "AVX2 enabled              ${avx2-no}"
6653     echo "XOP enabled               ${xop-no}"
6654     echo "FMA3 enabled              ${fma3-no}"
6655     echo "FMA4 enabled              ${fma4-no}"
6656     echo "i686 features enabled     ${i686-no}"
6657     echo "CMOV is fast              ${fast_cmov-no}"
6658     echo "EBX available             ${ebx_available-no}"
6659     echo "EBP available             ${ebp_available-no}"
6660 fi
6661 if enabled aarch64; then
6662     echo "NEON enabled              ${neon-no}"
6663     echo "VFP enabled               ${vfp-no}"
6664 fi
6665 if enabled arm; then
6666     echo "ARMv5TE enabled           ${armv5te-no}"
6667     echo "ARMv6 enabled             ${armv6-no}"
6668     echo "ARMv6T2 enabled           ${armv6t2-no}"
6669     echo "VFP enabled               ${vfp-no}"
6670     echo "NEON enabled              ${neon-no}"
6671     echo "THUMB enabled             ${thumb-no}"
6672 fi
6673 if enabled mips; then
6674     echo "MIPS FPU enabled          ${mipsfpu-no}"
6675     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6676     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6677     echo "MIPS MSA enabled          ${msa-no}"
6678     echo "LOONGSON MMI enabled      ${mmi-no}"
6679 fi
6680 if enabled ppc; then
6681     echo "AltiVec enabled           ${altivec-no}"
6682     echo "VSX enabled               ${vsx-no}"
6683     echo "POWER8 enabled            ${power8-no}"
6684     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6685     echo "dcbzl available           ${dcbzl-no}"
6686 fi
6687 echo "debug symbols             ${debug-no}"
6688 echo "strip symbols             ${stripping-no}"
6689 echo "optimize for size         ${small-no}"
6690 echo "optimizations             ${optimizations-no}"
6691 echo "static                    ${static-no}"
6692 echo "shared                    ${shared-no}"
6693 echo "postprocessing support    ${postproc-no}"
6694 echo "network support           ${network-no}"
6695 echo "threading support         ${thread_type-no}"
6696 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6697 echo "texi2html enabled         ${texi2html-no}"
6698 echo "perl enabled              ${perl-no}"
6699 echo "pod2man enabled           ${pod2man-no}"
6700 echo "makeinfo enabled          ${makeinfo-no}"
6701 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6702 test -n "$random_seed" &&
6703     echo "random seed               ${random_seed}"
6704 echo
6705
6706 echo "External libraries:"
6707 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6708 echo
6709
6710 echo "External libraries providing hardware acceleration:"
6711 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6712 echo
6713
6714 echo "Libraries:"
6715 print_enabled '' $LIBRARY_LIST | print_in_columns
6716 echo
6717
6718 echo "Programs:"
6719 print_enabled '' $PROGRAM_LIST | print_in_columns
6720 echo
6721
6722 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6723     echo "Enabled ${type}s:"
6724     eval list=\$$(toupper $type)_LIST
6725     print_enabled '_*' $list | print_in_columns
6726     echo
6727 done
6728
6729 if test -n "$ignore_tests"; then
6730     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6731     echo "Ignored FATE tests:"
6732     echo $ignore_tests | print_in_columns
6733     echo
6734 fi
6735
6736 echo "License: $license"
6737
6738 fi # test "$quiet" != "yes"
6739
6740 if test -n "$WARNINGS"; then
6741     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6742     enabled fatal_warnings && exit 1
6743 fi
6744
6745 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6746
6747 esc(){
6748     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6749 }
6750
6751 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6752
6753 enabled stripping || strip="echo skipping strip"
6754 enabled stripping || striptype=""
6755
6756 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6757
6758 cat > ffbuild/config.mak <<EOF
6759 # Automatically generated by configure - do not modify!
6760 ifndef FFMPEG_CONFIG_MAK
6761 FFMPEG_CONFIG_MAK=1
6762 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6763 prefix=$prefix
6764 LIBDIR=\$(DESTDIR)$libdir
6765 SHLIBDIR=\$(DESTDIR)$shlibdir
6766 INCDIR=\$(DESTDIR)$incdir
6767 BINDIR=\$(DESTDIR)$bindir
6768 DATADIR=\$(DESTDIR)$datadir
6769 DOCDIR=\$(DESTDIR)$docdir
6770 MANDIR=\$(DESTDIR)$mandir
6771 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6772 INSTALL_NAME_DIR=$install_name_dir
6773 SRC_PATH=$source_path
6774 SRC_LINK=$source_link
6775 ifndef MAIN_MAKEFILE
6776 SRC_PATH:=\$(SRC_PATH:.%=..%)
6777 endif
6778 CC_IDENT=$cc_ident
6779 ARCH=$arch
6780 INTRINSICS=$intrinsics
6781 CC=$cc
6782 CXX=$cxx
6783 AS=$as
6784 OBJCC=$objcc
6785 LD=$ld
6786 DEPCC=$dep_cc
6787 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6788 DEPAS=$as
6789 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6790 X86ASM=$x86asmexe
6791 DEPX86ASM=$x86asmexe
6792 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6793 AR=$ar
6794 ARFLAGS=$arflags
6795 AR_O=$ar_o
6796 AR_CMD=$ar
6797 NM_CMD=$nm
6798 RANLIB=$ranlib
6799 STRIP=$strip
6800 STRIPTYPE=$striptype
6801 NVCC=$nvcc
6802 CP=cp -p
6803 LN_S=$ln_s
6804 CPPFLAGS=$CPPFLAGS
6805 CFLAGS=$CFLAGS
6806 CXXFLAGS=$CXXFLAGS
6807 OBJCFLAGS=$OBJCFLAGS
6808 ASFLAGS=$ASFLAGS
6809 NVCCFLAGS=$nvccflags
6810 AS_C=$AS_C
6811 AS_O=$AS_O
6812 OBJCC_C=$OBJCC_C
6813 OBJCC_E=$OBJCC_E
6814 OBJCC_O=$OBJCC_O
6815 CC_C=$CC_C
6816 CC_E=$CC_E
6817 CC_O=$CC_O
6818 CXX_C=$CXX_C
6819 CXX_O=$CXX_O
6820 NVCC_C=$NVCC_C
6821 NVCC_O=$NVCC_O
6822 LD_O=$LD_O
6823 X86ASM_O=$X86ASM_O
6824 LD_LIB=$LD_LIB
6825 LD_PATH=$LD_PATH
6826 WINDRES=$windres
6827 DEPWINDRES=$dep_cc
6828 DOXYGEN=$doxygen
6829 LDFLAGS=$LDFLAGS
6830 LDEXEFLAGS=$LDEXEFLAGS
6831 LDSOFLAGS=$LDSOFLAGS
6832 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6833 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6834 X86ASMFLAGS=$X86ASMFLAGS
6835 BUILDSUF=$build_suffix
6836 PROGSSUF=$progs_suffix
6837 FULLNAME=$FULLNAME
6838 LIBPREF=$LIBPREF
6839 LIBSUF=$LIBSUF
6840 LIBNAME=$LIBNAME
6841 SLIBPREF=$SLIBPREF
6842 SLIBSUF=$SLIBSUF
6843 EXESUF=$EXESUF
6844 EXTRA_VERSION=$extra_version
6845 CCDEP=$CCDEP
6846 CXXDEP=$CXXDEP
6847 CCDEP_FLAGS=$CCDEP_FLAGS
6848 ASDEP=$ASDEP
6849 ASDEP_FLAGS=$ASDEP_FLAGS
6850 X86ASMDEP=$X86ASMDEP
6851 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6852 CC_DEPFLAGS=$CC_DEPFLAGS
6853 AS_DEPFLAGS=$AS_DEPFLAGS
6854 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6855 HOSTCC=$host_cc
6856 HOSTLD=$host_ld
6857 HOSTCFLAGS=$host_cflags
6858 HOSTCPPFLAGS=$host_cppflags
6859 HOSTEXESUF=$HOSTEXESUF
6860 HOSTLDFLAGS=$host_ldflags
6861 HOSTEXTRALIBS=$host_extralibs
6862 DEPHOSTCC=$host_cc
6863 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6864 HOSTCCDEP=$HOSTCCDEP
6865 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6866 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6867 HOSTCC_C=$HOSTCC_C
6868 HOSTCC_O=$HOSTCC_O
6869 HOSTLD_O=$HOSTLD_O
6870 TARGET_EXEC=$target_exec $target_exec_args
6871 TARGET_PATH=$target_path
6872 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6873 CFLAGS-ffplay=${sdl2_cflags}
6874 CFLAGS_HEADERS=$CFLAGS_HEADERS
6875 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6876 EXTRALIBS=$extralibs
6877 COMPAT_OBJS=$compat_objs
6878 INSTALL=$install
6879 SLIBNAME=${SLIBNAME}
6880 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6881 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6882 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6883 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6884 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6885 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6886 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6887 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6888 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6889 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6890 NOREDZONE_FLAGS=$noredzone_flags
6891 LIBFUZZER_PATH=$libfuzzer_path
6892 IGNORE_TESTS=$ignore_tests
6893 EOF
6894
6895 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6896
6897 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6898     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6899 done
6900
6901 cat > $TMPH <<EOF
6902 /* Automatically generated by configure - do not modify! */
6903 #ifndef FFMPEG_CONFIG_H
6904 #define FFMPEG_CONFIG_H
6905 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6906 #define FFMPEG_LICENSE "$(c_escape $license)"
6907 #define CONFIG_THIS_YEAR 2017
6908 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6909 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6910 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6911 #define av_restrict $_restrict
6912 #define EXTERN_PREFIX "${extern_prefix}"
6913 #define EXTERN_ASM ${extern_prefix}
6914 #define BUILDSUF "$build_suffix"
6915 #define SLIBSUF "$SLIBSUF"
6916 #define HAVE_MMX2 HAVE_MMXEXT
6917 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6918 EOF
6919
6920 test -n "$assert_level" &&
6921     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6922
6923 test -n "$malloc_prefix" &&
6924     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6925
6926 if enabled x86asm; then
6927     append config_files $TMPASM
6928     cat > $TMPASM <<EOF
6929 ; Automatically generated by configure - do not modify!
6930 EOF
6931 fi
6932
6933 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6934
6935
6936 mkdir -p doc
6937 mkdir -p tests
6938 mkdir -p tests/api
6939 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6940
6941 print_config ARCH_   "$config_files" $ARCH_LIST
6942 print_config HAVE_   "$config_files" $HAVE_LIST
6943 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6944                                      $CONFIG_EXTRA      \
6945                                      $ALL_COMPONENTS    \
6946
6947 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6948 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6949
6950 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6951 cp_if_changed $TMPH config.h
6952 touch ffbuild/.config
6953
6954 enabled x86asm && cp_if_changed $TMPASM config.asm
6955
6956 cat > $TMPH <<EOF
6957 /* Generated by ffmpeg configure */
6958 #ifndef AVUTIL_AVCONFIG_H
6959 #define AVUTIL_AVCONFIG_H
6960 EOF
6961
6962 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6963
6964 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6965
6966 cp_if_changed $TMPH libavutil/avconfig.h
6967
6968 # generate the lists of enabled components
6969 print_enabled_components(){
6970     file=$1
6971     struct_name=$2
6972     name=$3
6973     shift 3
6974     echo "static const $struct_name * const $name[] = {" > $TMPH
6975     for c in $*; do
6976         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6977     done
6978     echo "    NULL };" >> $TMPH
6979     cp_if_changed $TMPH $file
6980 }
6981
6982 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6983 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6984
6985 # Settings for pkg-config files
6986
6987 cat > $TMPH <<EOF
6988 # Automatically generated by configure - do not modify!
6989 shared=$shared
6990 build_suffix=$build_suffix
6991 prefix=$prefix
6992 libdir=$libdir
6993 incdir=$incdir
6994 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6995 source_path=${source_path}
6996 LIBPREF=${LIBPREF}
6997 LIBSUF=${LIBSUF}
6998 extralibs_avutil="$avutil_extralibs"
6999 extralibs_avcodec="$avcodec_extralibs"
7000 extralibs_avformat="$avformat_extralibs"
7001 extralibs_avdevice="$avdevice_extralibs"
7002 extralibs_avfilter="$avfilter_extralibs"
7003 extralibs_avresample="$avresample_extralibs"
7004 extralibs_postproc="$postproc_extralibs"
7005 extralibs_swscale="$swscale_extralibs"
7006 extralibs_swresample="$swresample_extralibs"
7007 EOF
7008
7009 for lib in $LIBRARY_LIST; do
7010     lib_deps="$(eval echo \$${lib}_deps)"
7011     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7012 done
7013
7014 cp_if_changed $TMPH ffbuild/config.sh