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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --enable-jni             enable JNI support [no]
 221   --enable-ladspa          enable LADSPA audio filtering [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --disable-lzma           disable lzma [autodetect]
 287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 289   --enable-mediacodec      enable Android MediaCodec support [no]
 290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 291   --enable-openal          enable OpenAL 1.1 capture support [no]
 292   --enable-opencl          enable OpenCL code
 293   --enable-opengl          enable OpenGL rendering [no]
 294   --enable-openssl         enable openssl, needed for https support
 295                            if gnutls is not used [no]
 296   --disable-sndio          disable sndio support [autodetect]
 297   --disable-schannel       disable SChannel SSP, needed for TLS support on
 298                            Windows if openssl and gnutls are not used [autodetect]
 299   --disable-sdl2           disable sdl2 [autodetect]
 300   --disable-securetransport disable Secure Transport, needed for TLS support
 301                            on OSX if openssl and gnutls are not used [autodetect]
 302   --disable-xlib           disable xlib [autodetect]
 303   --disable-zlib           disable zlib [autodetect]
 304
 305   The following libraries provide various hardware acceleration features:
 306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 312   --enable-libdrm          enable DRM code (Linux) [no]
 313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 316   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
 317   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 318   --enable-omx             enable OpenMAX IL code [no]
 319   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 320   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 321   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 324
 325 Toolchain options:
 326   --arch=ARCH              select architecture [$arch]
 327   --cpu=CPU                select the minimum required CPU (affects
 328                            instruction selection, may crash on older CPUs)
 329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 330   --progs-suffix=SUFFIX    program name suffix []
 331   --enable-cross-compile   assume a cross-compiler is used
 332   --sysroot=PATH           root of cross-build tree
 333   --sysinclude=PATH        location of cross-build system headers
 334   --target-os=OS           compiler targets OS [$target_os]
 335   --target-exec=CMD        command to run executables on target
 336   --target-path=DIR        path to view of build directory on target
 337   --target-samples=DIR     path to samples directory on target
 338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 339   --toolchain=NAME         set tool defaults according to NAME
 340   --nm=NM                  use nm tool NM [$nm_default]
 341   --ar=AR                  use archive tool AR [$ar_default]
 342   --as=AS                  use assembler AS [$as_default]
 343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 344   --strip=STRIP            use strip tool STRIP [$strip_default]
 345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 347   --cc=CC                  use C compiler CC [$cc_default]
 348   --cxx=CXX                use C compiler CXX [$cxx_default]
 349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 352   --ld=LD                  use linker LD [$ld_default]
 353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 357   --host-cc=HOSTCC         use host C compiler HOSTCC
 358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 360   --host-ld=HOSTLD         use host linker HOSTLD
 361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 362   --host-libs=HLIBS        use libs HLIBS when linking for host
 363   --host-os=OS             compiler host OS [$target_os]
 364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 369   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 371   --extra-version=STRING   version string suffix []
 372   --optflags=OPTFLAGS      override optimization-related compiler flags
 373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 374   --build-suffix=SUFFIX    library name suffix []
 375   --enable-pic             build position-independent code
 376   --enable-thumb           compile for Thumb instruction set
 377   --enable-lto             use link-time optimization
 378   --env="ENV=override"     override the environment variables
 379
 380 Advanced options (experts only):
 381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 382   --custom-allocator=NAME  use a supported custom allocator
 383   --disable-symver         disable symbol versioning
 384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 385   --disable-safe-bitstream-reader
 386                            disable buffer boundary checking in bitreaders
 387                            (faster, but may crash)
 388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 389
 390 Optimization options (experts only):
 391   --disable-asm            disable all assembly optimizations
 392   --disable-altivec        disable AltiVec optimizations
 393   --disable-vsx            disable VSX optimizations
 394   --disable-power8         disable POWER8 optimizations
 395   --disable-amd3dnow       disable 3DNow! optimizations
 396   --disable-amd3dnowext    disable 3DNow! extended optimizations
 397   --disable-mmx            disable MMX optimizations
 398   --disable-mmxext         disable MMXEXT optimizations
 399   --disable-sse            disable SSE optimizations
 400   --disable-sse2           disable SSE2 optimizations
 401   --disable-sse3           disable SSE3 optimizations
 402   --disable-ssse3          disable SSSE3 optimizations
 403   --disable-sse4           disable SSE4 optimizations
 404   --disable-sse42          disable SSE4.2 optimizations
 405   --disable-avx            disable AVX optimizations
 406   --disable-xop            disable XOP optimizations
 407   --disable-fma3           disable FMA3 optimizations
 408   --disable-fma4           disable FMA4 optimizations
 409   --disable-avx2           disable AVX2 optimizations
 410   --disable-aesni          disable AESNI optimizations
 411   --disable-armv5te        disable armv5te optimizations
 412   --disable-armv6          disable armv6 optimizations
 413   --disable-armv6t2        disable armv6t2 optimizations
 414   --disable-vfp            disable VFP optimizations
 415   --disable-neon           disable NEON optimizations
 416   --disable-inline-asm     disable use of inline assembly
 417   --disable-x86asm         disable use of standalone x86 assembly
 418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 420   --disable-msa            disable MSA optimizations
 421   --disable-mipsfpu        disable floating point MIPS optimizations
 422   --disable-mmi            disable Loongson SIMD optimizations
 423   --disable-fast-unaligned consider unaligned accesses slow
 424
 425 Developer options (useful when working on FFmpeg itself):
 426   --disable-debug          disable debugging symbols
 427   --enable-debug=LEVEL     set the debug level [$debuglevel]
 428   --disable-optimizations  disable compiler optimizations
 429   --enable-extra-warnings  enable more compiler warnings
 430   --disable-stripping      disable stripping of executables and shared libraries
 431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 432                            2 causes a slowdown at runtime.
 433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 435                            leaks and errors, using the specified valgrind binary.
 436                            Cannot be combined with --target-exec
 437   --enable-ftrapv          Trap arithmetic overflows
 438   --samples=PATH           location of test samples for FATE, if not set use
 439                            \$FATE_SAMPLES at make invocation time.
 440   --enable-neon-clobber-test check NEON registers for clobbering (should be
 441                            used only for debugging purposes)
 442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 443                            should be used only for debugging purposes)
 444   --enable-random          randomly enable/disable components
 445   --disable-random
 446   --enable-random=LIST     randomly enable/disable specific components or
 447   --disable-random=LIST    component groups. LIST is a comma-separated list
 448                            of NAME[:PROB] entries where NAME is a component
 449                            (group) and PROB the probability associated with
 450                            NAME (default 0.5).
 451   --random-seed=VALUE      seed value for --enable/disable-random
 452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 453                            (only applies to --disable-optimizations builds)
 454   --enable-osfuzz          Enable building fuzzer tool
 455   --libfuzzer=PATH         path to libfuzzer
 456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 457                            in the name) of tests whose result is ignored
 458   --enable-linux-perf      enable Linux Performance Monitor API
 459
 460 NOTE: Object files are built at the place where configure is launched.
 461 EOF
 462   exit 0
 463 }
 464
 465 quotes='""'
 466 if test -t 1 && which tput >/dev/null 2>&1; then
 467     ncolors=$(tput colors)
 468     if test -n "$ncolors" && test $ncolors -ge 8; then
 469         bold_color=$(tput bold)
 470         warn_color=$(tput setaf 3)
 471         error_color=$(tput setaf 1)
 472         reset_color=$(tput sgr0)
 473     fi
 474     # 72 used instead of 80 since that's the default of pr
 475     ncols=$(tput cols)
 476 fi
 477 : ${ncols:=72}
 478
 479 log(){
 480     echo "$@" >> $logfile
 481 }
 482
 483 log_file(){
 484     log BEGIN $1
 485     pr -n -t $1 >> $logfile
 486     log END $1
 487 }
 488
 489 warn(){
 490     log "WARNING: $*"
 491     WARNINGS="${WARNINGS}WARNING: $*\n"
 492 }
 493
 494 die(){
 495     log "$@"
 496     echo "$error_color$bold_color$@$reset_color"
 497     cat <<EOF
 498
 499 If you think configure made a mistake, make sure you are using the latest
 500 version from Git.  If the latest version fails, report the problem to the
 501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 502 EOF
 503     if disabled logging; then
 504         cat <<EOF
 505 Rerun configure with logging enabled (do not use --disable-logging), and
 506 include the log this produces with your report.
 507 EOF
 508     else
 509         cat <<EOF
 510 Include the log file "$logfile" produced by configure as this will help
 511 solve the problem.
 512 EOF
 513     fi
 514     exit 1
 515 }
 516
 517 # Avoid locale weirdness, besides we really just want to translate ASCII.
 518 toupper(){
 519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 520 }
 521
 522 tolower(){
 523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 524 }
 525
 526 c_escape(){
 527     echo "$*" | sed 's/["\\]/\\\0/g'
 528 }
 529
 530 sh_quote(){
 531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 533     echo "$v"
 534 }
 535
 536 cleanws(){
 537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 538 }
 539
 540 filter(){
 541     pat=$1
 542     shift
 543     for v; do
 544         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 545     done
 546 }
 547
 548 filter_out(){
 549     pat=$1
 550     shift
 551     for v; do
 552         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 553     done
 554 }
 555
 556 map(){
 557     m=$1
 558     shift
 559     for v; do eval $m; done
 560 }
 561
 562 add_suffix(){
 563     suffix=$1
 564     shift
 565     for v; do echo ${v}${suffix}; done
 566 }
 567
 568 set_all(){
 569     value=$1
 570     shift
 571     for var in $*; do
 572         eval $var=$value
 573     done
 574 }
 575
 576 set_weak(){
 577     value=$1
 578     shift
 579     for var; do
 580         eval : \${$var:=$value}
 581     done
 582 }
 583
 584 sanitize_var_name(){
 585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 586 }
 587
 588 set_sanitized(){
 589     var=$1
 590     shift
 591     eval $(sanitize_var_name "$var")='$*'
 592 }
 593
 594 get_sanitized(){
 595     eval echo \$$(sanitize_var_name "$1")
 596 }
 597
 598 pushvar(){
 599     for pvar in $*; do
 600         eval level=\${${pvar}_level:=0}
 601         eval ${pvar}_${level}="\$$pvar"
 602         eval ${pvar}_level=$(($level+1))
 603     done
 604 }
 605
 606 popvar(){
 607     for pvar in $*; do
 608         eval level=\${${pvar}_level:-0}
 609         test $level = 0 && continue
 610         eval level=$(($level-1))
 611         eval $pvar="\${${pvar}_${level}}"
 612         eval ${pvar}_level=$level
 613         eval unset ${pvar}_${level}
 614     done
 615 }
 616
 617 request(){
 618     for var in $*; do
 619         eval ${var}_requested=yes
 620         eval $var=
 621     done
 622 }
 623
 624 enable(){
 625     set_all yes $*
 626 }
 627
 628 disable(){
 629     set_all no $*
 630 }
 631
 632 enable_weak(){
 633     set_weak yes $*
 634 }
 635
 636 disable_weak(){
 637     set_weak no $*
 638 }
 639
 640 enable_sanitized(){
 641     for var; do
 642         enable $(sanitize_var_name $var)
 643     done
 644 }
 645
 646 disable_sanitized(){
 647     for var; do
 648         disable $(sanitize_var_name $var)
 649     done
 650 }
 651
 652 do_enable_deep(){
 653     for var; do
 654         enabled $var && continue
 655         eval sel="\$${var}_select"
 656         eval sgs="\$${var}_suggest"
 657         pushvar var sgs
 658         enable_deep $sel
 659         popvar sgs
 660         enable_deep_weak $sgs
 661         popvar var
 662     done
 663 }
 664
 665 enable_deep(){
 666     do_enable_deep $*
 667     enable $*
 668 }
 669
 670 enable_deep_weak(){
 671     for var; do
 672         disabled $var && continue
 673         pushvar var
 674         do_enable_deep $var
 675         popvar var
 676         enable_weak $var
 677     done
 678 }
 679
 680 requested(){
 681     test "${1#!}" = "$1" && op="=" || op="!="
 682     eval test "x\$${1#!}_requested" $op "xyes"
 683 }
 684
 685 enabled(){
 686     test "${1#!}" = "$1" && op="=" || op="!="
 687     eval test "x\$${1#!}" $op "xyes"
 688 }
 689
 690 disabled(){
 691     test "${1#!}" = "$1" && op="=" || op="!="
 692     eval test "x\$${1#!}" $op "xno"
 693 }
 694
 695 enabled_all(){
 696     for opt; do
 697         enabled $opt || return 1
 698     done
 699 }
 700
 701 disabled_all(){
 702     for opt; do
 703         disabled $opt || return 1
 704     done
 705 }
 706
 707 enabled_any(){
 708     for opt; do
 709         enabled $opt && return 0
 710     done
 711 }
 712
 713 disabled_any(){
 714     for opt; do
 715         disabled $opt && return 0
 716     done
 717     return 1
 718 }
 719
 720 set_default(){
 721     for opt; do
 722         eval : \${$opt:=\$${opt}_default}
 723     done
 724 }
 725
 726 is_in(){
 727     value=$1
 728     shift
 729     for var in $*; do
 730         [ $var = $value ] && return 0
 731     done
 732     return 1
 733 }
 734
 735 check_deps(){
 736     for cfg; do
 737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 738         disabled ${cfg}_checking && continue
 739         enable ${cfg}_checking
 740
 741         eval dep_all="\$${cfg}_deps"
 742         eval dep_any="\$${cfg}_deps_any"
 743         eval dep_con="\$${cfg}_conflict"
 744         eval dep_sel="\$${cfg}_select"
 745         eval dep_sgs="\$${cfg}_suggest"
 746         eval dep_ifa="\$${cfg}_if"
 747         eval dep_ifn="\$${cfg}_if_any"
 748
 749         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 750         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 751         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 752
 753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 757         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 758         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 759
 760         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 761
 762         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 763             # filter out library deps, these do not belong in extralibs
 764             is_in $dep $LIBRARY_LIST && continue
 765             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 766         done
 767
 768         disable ${cfg}_checking
 769     done
 770 }
 771
 772 print_config(){
 773     pfx=$1
 774     files=$2
 775     shift 2
 776     map 'eval echo "$v \${$v:-no}"' "$@" |
 777     awk "BEGIN { split(\"$files\", files) }
 778         {
 779             c = \"$pfx\" toupper(\$1);
 780             v = \$2;
 781             sub(/yes/, 1, v);
 782             sub(/no/,  0, v);
 783             for (f in files) {
 784                 file = files[f];
 785                 if (file ~ /\\.h\$/) {
 786                     printf(\"#define %s %d\\n\", c, v) >>file;
 787                 } else if (file ~ /\\.asm\$/) {
 788                     printf(\"%%define %s %d\\n\", c, v) >>file;
 789                 } else if (file ~ /\\.mak\$/) {
 790                     n = -v ? \"\" : \"!\";
 791                     printf(\"%s%s=yes\\n\", n, c) >>file;
 792                 } else if (file ~ /\\.texi\$/) {
 793                     pre = -v ? \"\" : \"@c \";
 794                     yesno = \$2;
 795                     c2 = tolower(c);
 796                     gsub(/_/, \"-\", c2);
 797                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 798                 }
 799             }
 800         }"
 801 }
 802
 803 print_enabled(){
 804     suf=$1
 805     shift
 806     for v; do
 807         enabled $v && printf "%s\n" ${v%$suf}
 808     done
 809 }
 810
 811 append(){
 812     var=$1
 813     shift
 814     eval "$var=\"\$$var $*\""
 815 }
 816
 817 prepend(){
 818     var=$1
 819     shift
 820     eval "$var=\"$* \$$var\""
 821 }
 822
 823 unique(){
 824     var=$1
 825     uniq_list=""
 826     for tok in $(eval echo \$$var); do
 827         uniq_list="$(filter_out $tok $uniq_list) $tok"
 828     done
 829     eval "$var=\"${uniq_list}\""
 830 }
 831
 832 resolve(){
 833     var=$1
 834     tmpvar=
 835     for entry in $(eval echo \$$var); do
 836         tmpvar="$tmpvar $(eval echo \$${entry})"
 837     done
 838     eval "$var=\"${tmpvar}\""
 839 }
 840
 841 add_cppflags(){
 842     append CPPFLAGS "$@"
 843 }
 844
 845 add_cflags(){
 846     append CFLAGS $($cflags_filter "$@")
 847 }
 848
 849 add_cflags_headers(){
 850     append CFLAGS_HEADERS $($cflags_filter "$@")
 851 }
 852
 853 add_cxxflags(){
 854     append CXXFLAGS $($cflags_filter "$@")
 855 }
 856
 857 add_asflags(){
 858     append ASFLAGS $($asflags_filter "$@")
 859 }
 860
 861 add_objcflags(){
 862     append OBJCFLAGS $($objcflags_filter "$@")
 863 }
 864
 865 add_ldflags(){
 866     append LDFLAGS $($ldflags_filter "$@")
 867 }
 868
 869 add_ldexeflags(){
 870     append LDEXEFLAGS $($ldflags_filter "$@")
 871 }
 872
 873 add_ldsoflags(){
 874     append LDSOFLAGS $($ldflags_filter "$@")
 875 }
 876
 877 add_stripflags(){
 878     append ASMSTRIPFLAGS "$@"
 879 }
 880
 881 add_extralibs(){
 882     prepend extralibs $($ldflags_filter "$@")
 883 }
 884
 885 add_host_cppflags(){
 886     append host_cppflags "$@"
 887 }
 888
 889 add_host_cflags(){
 890     append host_cflags $($host_cflags_filter "$@")
 891 }
 892
 893 add_host_ldflags(){
 894     append host_ldflags $($host_ldflags_filter "$@")
 895 }
 896
 897 add_compat(){
 898     append compat_objs $1
 899     shift
 900     map 'add_cppflags -D$v' "$@"
 901 }
 902
 903 check_cmd(){
 904     log "$@"
 905     "$@" >> $logfile 2>&1
 906 }
 907
 908 check_stat(){
 909     log check_stat "$@"
 910     stat "$1" >> $logfile 2>&1
 911 }
 912
 913 cc_o(){
 914     eval printf '%s\\n' $CC_O
 915 }
 916
 917 cc_e(){
 918     eval printf '%s\\n' $CC_E
 919 }
 920
 921 check_cc(){
 922     log check_cc "$@"
 923     cat > $TMPC
 924     log_file $TMPC
 925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 926 }
 927
 928 check_cxx(){
 929     log check_cxx "$@"
 930     cat > $TMPCPP
 931     log_file $TMPCPP
 932     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 933 }
 934
 935 check_objcc(){
 936     log check_objcc "$@"
 937     cat > $TMPM
 938     log_file $TMPM
 939     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 940 }
 941
 942 check_cpp(){
 943     log check_cpp "$@"
 944     cat > $TMPC
 945     log_file $TMPC
 946     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 947 }
 948
 949 as_o(){
 950     eval printf '%s\\n' $AS_O
 951 }
 952
 953 check_as(){
 954     log check_as "$@"
 955     cat > $TMPS
 956     log_file $TMPS
 957     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 958 }
 959
 960 check_inline_asm(){
 961     log check_inline_asm "$@"
 962     name="$1"
 963     code="$2"
 964     shift 2
 965     disable $name
 966     check_cc "$@" <<EOF && enable $name
 967 void foo(void){ __asm__ volatile($code); }
 968 EOF
 969 }
 970
 971 check_inline_asm_flags(){
 972     log check_inline_asm_flags "$@"
 973     name="$1"
 974     code="$2"
 975     flags=''
 976     shift 2
 977     while [ "$1" != "" ]; do
 978       append flags $1
 979       shift
 980     done;
 981     disable $name
 982     cat > $TMPC <<EOF
 983 void foo(void){ __asm__ volatile($code); }
 984 EOF
 985     log_file $TMPC
 986     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 987     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 988 }
 989
 990 check_insn(){
 991     log check_insn "$@"
 992     check_inline_asm ${1}_inline "\"$2\""
 993     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 994 }
 995
 996 check_x86asm(){
 997     log check_x86asm "$@"
 998     echo "$1" > $TMPS
 999     log_file $TMPS
1000     shift 1
1001     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 check_ld(){
1009     log check_ld "$@"
1010     type=$1
1011     shift 1
1012     flags=$(filter_out '-l*|*.so' $@)
1013     libs=$(filter '-l*|*.so' $@)
1014     check_$type $($cflags_filter $flags) || return
1015     flags=$($ldflags_filter $flags)
1016     libs=$($ldflags_filter $libs)
1017     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1018 }
1019
1020 print_include(){
1021     hdr=$1
1022     test "${hdr%.h}" = "${hdr}" &&
1023         echo "#include $hdr"    ||
1024         echo "#include <$hdr>"
1025 }
1026
1027 check_code(){
1028     log check_code "$@"
1029     check=$1
1030     headers=$2
1031     code=$3
1032     shift 3
1033     {
1034         for hdr in $headers; do
1035             print_include $hdr
1036         done
1037         echo "int main(void) { $code; return 0; }"
1038     } | check_$check "$@"
1039 }
1040
1041 check_cppflags(){
1042     log check_cppflags "$@"
1043     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1044 #include <stdlib.h>
1045 EOF
1046 }
1047
1048 test_cflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_cflags(){
1057     log check_cflags "$@"
1058     test_cflags "$@" && add_cflags "$@"
1059 }
1060
1061 check_cxxflags(){
1062     log check_cxxflags "$@"
1063     set -- $($cflags_filter "$@")
1064     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1065 int x;
1066 EOF
1067 }
1068
1069 test_objcflags(){
1070     log test_objcflags "$@"
1071     set -- $($objcflags_filter "$@")
1072     check_objcc "$@" <<EOF
1073 int x;
1074 EOF
1075 }
1076
1077 check_objcflags(){
1078     log check_objcflags "$@"
1079     test_objcflags "$@" && add_objcflags "$@"
1080 }
1081
1082 test_ldflags(){
1083     log test_ldflags "$@"
1084     set -- $($ldflags_filter "$@")
1085     check_ld "cc" "$@" <<EOF
1086 int main(void){ return 0; }
1087 EOF
1088 }
1089
1090 check_ldflags(){
1091     log check_ldflags "$@"
1092     test_ldflags "$@" && add_ldflags "$@"
1093 }
1094
1095 test_stripflags(){
1096     log test_stripflags "$@"
1097     # call check_cc to get a fresh TMPO
1098     check_cc <<EOF
1099 int main(void) { return 0; }
1100 EOF
1101     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1102 }
1103
1104 check_stripflags(){
1105     log check_stripflags "$@"
1106     test_stripflags "$@" && add_stripflags "$@"
1107 }
1108
1109 check_header(){
1110     log check_header "$@"
1111     headers=$1
1112     shift
1113     disable_sanitized $headers
1114     {
1115         for hdr in $headers; do
1116             print_include $hdr
1117         done
1118         echo "int x;"
1119     } | check_cpp "$@" && enable_sanitized $headers
1120 }
1121
1122 check_header_objcc(){
1123     log check_header_objcc "$@"
1124     rm -f -- "$TMPO"
1125     header=$1
1126     shift
1127     disable_sanitized $header
1128     {
1129        echo "#include <$header>"
1130        echo "int main(void) { return 0; }"
1131     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1132 }
1133
1134 check_apple_framework(){
1135     log check_apple_framework "$@"
1136     framework="$1"
1137     name="$(tolower $framework)"
1138     header="${framework}/${framework}.h"
1139     disable $name
1140     check_header_objcc $header &&
1141         enable $name && eval ${name}_extralibs='"-framework $framework"'
1142 }
1143
1144 check_func(){
1145     log check_func "$@"
1146     func=$1
1147     shift
1148     disable $func
1149     check_ld "cc" "$@" <<EOF && enable $func
1150 extern int $func();
1151 int main(void){ $func(); }
1152 EOF
1153 }
1154
1155 check_complexfunc(){
1156     log check_complexfunc "$@"
1157     func=$1
1158     narg=$2
1159     shift 2
1160     test $narg = 2 && args="f, g" || args="f * I"
1161     disable $func
1162     check_ld "cc" "$@" <<EOF && enable $func
1163 #include <complex.h>
1164 #include <math.h>
1165 float foo(complex float f, complex float g) { return $func($args); }
1166 int main(void){ return (int) foo; }
1167 EOF
1168 }
1169
1170 check_mathfunc(){
1171     log check_mathfunc "$@"
1172     func=$1
1173     narg=$2
1174     shift 2
1175     test $narg = 2 && args="f, g" || args="f"
1176     disable $func
1177     check_ld "cc" "$@" <<EOF && enable $func
1178 #include <math.h>
1179 float foo(float f, float g) { return $func($args); }
1180 int main(void){ return (int) foo; }
1181 EOF
1182 }
1183
1184 check_func_headers(){
1185     log check_func_headers "$@"
1186     headers=$1
1187     funcs=$2
1188     shift 2
1189     {
1190         for hdr in $headers; do
1191             print_include $hdr
1192         done
1193         echo "#include <stdint.h>"
1194         for func in $funcs; do
1195             echo "long check_$func(void) { return (long) $func; }"
1196         done
1197         echo "int main(void) { int ret = 0;"
1198         # LTO could optimize out the test functions without this
1199         for func in $funcs; do
1200             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1201         done
1202         echo "return ret; }"
1203     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1204 }
1205
1206 check_class_headers_cpp(){
1207     log check_class_headers_cpp "$@"
1208     headers=$1
1209     classes=$2
1210     shift 2
1211     {
1212         for hdr in $headers; do
1213             echo "#include <$hdr>"
1214         done
1215         echo "int main(void) { "
1216         i=1
1217         for class in $classes; do
1218             echo "$class obj$i;"
1219             i=$(expr $i + 1)
1220         done
1221         echo "return 0; }"
1222     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1223 }
1224
1225 check_cpp_condition(){
1226     log check_cpp_condition "$@"
1227     header=$1
1228     condition=$2
1229     shift 2
1230     check_cpp "$@" <<EOF
1231 #include <$header>
1232 #if !($condition)
1233 #error "unsatisfied condition: $condition"
1234 #endif
1235 EOF
1236 }
1237
1238 test_cflags_cc(){
1239     log test_cflags_cc "$@"
1240     flags=$1
1241     header=$2
1242     condition=$3
1243     shift 3
1244     set -- $($cflags_filter "$flags")
1245     check_cc "$@" <<EOF
1246 #include <$header>
1247 #if !($condition)
1248 #error "unsatisfied condition: $condition"
1249 #endif
1250 EOF
1251 }
1252
1253 check_lib(){
1254     log check_lib "$@"
1255     name="$1"
1256     headers="$2"
1257     funcs="$3"
1258     shift 3
1259     disable $name
1260     check_func_headers "$headers" "$funcs" "$@" &&
1261         enable $name && eval ${name}_extralibs="\$@"
1262 }
1263
1264 check_lib_cpp(){
1265     log check_lib_cpp "$@"
1266     name="$1"
1267     headers="$2"
1268     classes="$3"
1269     shift 3
1270     disable $name
1271     check_class_headers_cpp "$headers" "$classes" "$@" &&
1272         enable $name && eval ${name}_extralibs="\$@"
1273 }
1274
1275 test_pkg_config(){
1276     log test_pkg_config "$@"
1277     name="$1"
1278     pkg_version="$2"
1279     pkg="${2%% *}"
1280     headers="$3"
1281     funcs="$4"
1282     shift 4
1283     disable $name
1284     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1285     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1286     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1287     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1288         enable $name &&
1289         set_sanitized "${name}_cflags"    $pkg_cflags &&
1290         set_sanitized "${name}_extralibs" $pkg_libs
1291 }
1292
1293 check_pkg_config(){
1294     log check_pkg_config "$@"
1295     name="$1"
1296     test_pkg_config "$@" &&
1297         eval add_cflags \$${name}_cflags
1298 }
1299
1300 check_exec(){
1301     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1302 }
1303
1304 check_exec_crash(){
1305     log check_exec_crash "$@"
1306     code=$(cat)
1307
1308     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1309     # are safe but may not be available everywhere.  Thus we use
1310     # raise(SIGTERM) instead.  The check is run in a subshell so we
1311     # can redirect the "Terminated" message from the shell.  SIGBUS
1312     # is not defined by standard C so it is used conditionally.
1313
1314     (check_exec "$@") >> $logfile 2>&1 <<EOF
1315 #include <signal.h>
1316 static void sighandler(int sig){
1317     raise(SIGTERM);
1318 }
1319 int foo(void){
1320     $code
1321 }
1322 int (*func_ptr)(void) = foo;
1323 int main(void){
1324     signal(SIGILL, sighandler);
1325     signal(SIGFPE, sighandler);
1326     signal(SIGSEGV, sighandler);
1327 #ifdef SIGBUS
1328     signal(SIGBUS, sighandler);
1329 #endif
1330     return func_ptr();
1331 }
1332 EOF
1333 }
1334
1335 check_type(){
1336     log check_type "$@"
1337     headers=$1
1338     type=$2
1339     shift 2
1340     disable_sanitized "$type"
1341     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1342 }
1343
1344 check_struct(){
1345     log check_struct "$@"
1346     headers=$1
1347     struct=$2
1348     member=$3
1349     shift 3
1350     disable_sanitized "${struct}_${member}"
1351     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1352         enable_sanitized "${struct}_${member}"
1353 }
1354
1355 check_builtin(){
1356     log check_builtin "$@"
1357     name=$1
1358     headers=$2
1359     builtin=$3
1360     shift 3
1361     disable "$name"
1362     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1363 }
1364
1365 check_compile_assert(){
1366     log check_compile_assert "$@"
1367     name=$1
1368     headers=$2
1369     condition=$3
1370     shift 3
1371     disable "$name"
1372     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1373 }
1374
1375 require(){
1376     log require "$@"
1377     name_version="$1"
1378     name="${1%% *}"
1379     headers="$2"
1380     func="$3"
1381     shift 3
1382     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1383 }
1384
1385 require_cpp(){
1386     name="$1"
1387     headers="$2"
1388     classes="$3"
1389     shift 3
1390     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1391 }
1392
1393 require_header(){
1394     log require_header "$@"
1395     headers="$1"
1396     shift
1397     check_header "$headers" "$@" || die "ERROR: $headers not found"
1398 }
1399
1400 require_cpp_condition(){
1401     log require_cpp_condition "$@"
1402     header="$1"
1403     condition="$2"
1404     shift 2
1405     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1406 }
1407
1408 require_pkg_config(){
1409     log require_pkg_config "$@"
1410     pkg_version="$2"
1411     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1412 }
1413
1414 hostcc_e(){
1415     eval printf '%s\\n' $HOSTCC_E
1416 }
1417
1418 hostcc_o(){
1419     eval printf '%s\\n' $HOSTCC_O
1420 }
1421
1422 check_host_cc(){
1423     log check_host_cc "$@"
1424     cat > $TMPC
1425     log_file $TMPC
1426     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1427 }
1428
1429 check_host_cpp(){
1430     log check_host_cpp "$@"
1431     cat > $TMPC
1432     log_file $TMPC
1433     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1434 }
1435
1436 check_host_cppflags(){
1437     log check_host_cppflags "$@"
1438     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1439 #include <stdlib.h>
1440 EOF
1441 }
1442
1443 check_host_cflags(){
1444     log check_host_cflags "$@"
1445     set -- $($host_cflags_filter "$@")
1446     check_host_cc "$@" <<EOF && append host_cflags "$@"
1447 int x;
1448 EOF
1449 }
1450
1451 check_host_cpp_condition(){
1452     log check_host_cpp_condition "$@"
1453     header=$1
1454     condition=$2
1455     shift 2
1456     check_host_cpp "$@" <<EOF
1457 #include <$header>
1458 #if !($condition)
1459 #error "unsatisfied condition: $condition"
1460 #endif
1461 EOF
1462 }
1463
1464 cp_if_changed(){
1465     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1466     mkdir -p "$(dirname $2)"
1467     cp -f "$1" "$2"
1468 }
1469
1470 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1471 # system-dependent things.
1472
1473 AVCODEC_COMPONENTS="
1474     bsfs
1475     decoders
1476     encoders
1477     hwaccels
1478     parsers
1479 "
1480
1481 AVDEVICE_COMPONENTS="
1482     indevs
1483     outdevs
1484 "
1485
1486 AVFILTER_COMPONENTS="
1487     filters
1488 "
1489
1490 AVFORMAT_COMPONENTS="
1491     demuxers
1492     muxers
1493     protocols
1494 "
1495
1496 COMPONENT_LIST="
1497     $AVCODEC_COMPONENTS
1498     $AVDEVICE_COMPONENTS
1499     $AVFILTER_COMPONENTS
1500     $AVFORMAT_COMPONENTS
1501 "
1502
1503 EXAMPLE_LIST="
1504     avio_dir_cmd_example
1505     avio_reading_example
1506     decode_audio_example
1507     decode_video_example
1508     demuxing_decoding_example
1509     encode_audio_example
1510     encode_video_example
1511     extract_mvs_example
1512     filter_audio_example
1513     filtering_audio_example
1514     filtering_video_example
1515     http_multiclient_example
1516     hw_decode_example
1517     metadata_example
1518     muxing_example
1519     qsvdec_example
1520     remuxing_example
1521     resampling_audio_example
1522     scaling_video_example
1523     transcode_aac_example
1524     transcoding_example
1525 "
1526
1527 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1528     alsa
1529     appkit
1530     avfoundation
1531     bzlib
1532     coreimage
1533     iconv
1534     libxcb
1535     libxcb_shm
1536     libxcb_shape
1537     libxcb_xfixes
1538     lzma
1539     schannel
1540     sdl2
1541     securetransport
1542     sndio
1543     xlib
1544     zlib
1545 "
1546
1547 EXTERNAL_LIBRARY_GPL_LIST="
1548     avisynth
1549     frei0r
1550     libcdio
1551     librubberband
1552     libvidstab
1553     libx264
1554     libx265
1555     libxavs
1556     libxvid
1557 "
1558
1559 EXTERNAL_LIBRARY_NONFREE_LIST="
1560     decklink
1561     libndi_newtek
1562     libfdk_aac
1563     openssl
1564 "
1565
1566 EXTERNAL_LIBRARY_VERSION3_LIST="
1567     gmp
1568     libopencore_amrnb
1569     libopencore_amrwb
1570     libvmaf
1571     libvo_amrwbenc
1572     rkmpp
1573 "
1574
1575 EXTERNAL_LIBRARY_GPLV3_LIST="
1576     libsmbclient
1577 "
1578
1579 EXTERNAL_LIBRARY_LIST="
1580     $EXTERNAL_LIBRARY_GPL_LIST
1581     $EXTERNAL_LIBRARY_NONFREE_LIST
1582     $EXTERNAL_LIBRARY_VERSION3_LIST
1583     $EXTERNAL_LIBRARY_GPLV3_LIST
1584     chromaprint
1585     gcrypt
1586     gnutls
1587     jni
1588     ladspa
1589     libass
1590     libbluray
1591     libbs2b
1592     libcaca
1593     libcelt
1594     libdc1394
1595     libdrm
1596     libflite
1597     libfontconfig
1598     libfreetype
1599     libfribidi
1600     libgme
1601     libgsm
1602     libiec61883
1603     libilbc
1604     libjack
1605     libkvazaar
1606     libmodplug
1607     libmp3lame
1608     libmysofa
1609     libopencv
1610     libopenh264
1611     libopenjpeg
1612     libopenmpt
1613     libopus
1614     libpulse
1615     librsvg
1616     librtmp
1617     libshine
1618     libsmbclient
1619     libsnappy
1620     libsoxr
1621     libspeex
1622     libssh
1623     libtesseract
1624     libtheora
1625     libtwolame
1626     libv4l2
1627     libvorbis
1628     libvpx
1629     libwavpack
1630     libwebp
1631     libxml2
1632     libzimg
1633     libzmq
1634     libzvbi
1635     mediacodec
1636     openal
1637     opencl
1638     opengl
1639 "
1640
1641 HWACCEL_AUTODETECT_LIBRARY_LIST="
1642     audiotoolbox
1643     crystalhd
1644     cuda
1645     cuvid
1646     d3d11va
1647     dxva2
1648     nvdec
1649     nvenc
1650     vaapi
1651     vdpau
1652     videotoolbox
1653     v4l2_m2m
1654     xvmc
1655 "
1656
1657 # catchall list of things that require external libs to link
1658 EXTRALIBS_LIST="
1659     cpu_init
1660     cws2fws
1661 "
1662
1663 HWACCEL_LIBRARY_NONFREE_LIST="
1664     cuda_sdk
1665     libnpp
1666 "
1667
1668 HWACCEL_LIBRARY_LIST="
1669     $HWACCEL_LIBRARY_NONFREE_LIST
1670     libmfx
1671     mmal
1672     omx
1673 "
1674
1675 DOCUMENT_LIST="
1676     doc
1677     htmlpages
1678     manpages
1679     podpages
1680     txtpages
1681 "
1682
1683 FEATURE_LIST="
1684     ftrapv
1685     gray
1686     hardcoded_tables
1687     omx_rpi
1688     runtime_cpudetect
1689     safe_bitstream_reader
1690     shared
1691     small
1692     static
1693     swscale_alpha
1694 "
1695
1696 LIBRARY_LIST="
1697     avcodec
1698     avdevice
1699     avfilter
1700     avformat
1701     avresample
1702     avutil
1703     postproc
1704     swresample
1705     swscale
1706 "
1707
1708 LICENSE_LIST="
1709     gpl
1710     nonfree
1711     version3
1712 "
1713
1714 PROGRAM_LIST="
1715     ffplay
1716     ffprobe
1717     ffserver
1718     ffmpeg
1719 "
1720
1721 SUBSYSTEM_LIST="
1722     dct
1723     dwt
1724     error_resilience
1725     faan
1726     fast_unaligned
1727     fft
1728     lsp
1729     lzo
1730     mdct
1731     pixelutils
1732     network
1733     rdft
1734 "
1735
1736 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1737 CONFIG_LIST="
1738     $DOCUMENT_LIST
1739     $EXAMPLE_LIST
1740     $EXTERNAL_LIBRARY_LIST
1741     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1742     $HWACCEL_LIBRARY_LIST
1743     $HWACCEL_AUTODETECT_LIBRARY_LIST
1744     $FEATURE_LIST
1745     $LICENSE_LIST
1746     $LIBRARY_LIST
1747     $PROGRAM_LIST
1748     $SUBSYSTEM_LIST
1749     autodetect
1750     fontconfig
1751     linux_perf
1752     memory_poisoning
1753     neon_clobber_test
1754     ossfuzz
1755     pic
1756     thumb
1757     valgrind_backtrace
1758     xmm_clobber_test
1759     $COMPONENT_LIST
1760 "
1761
1762 THREADS_LIST="
1763     pthreads
1764     os2threads
1765     w32threads
1766 "
1767
1768 ATOMICS_LIST="
1769     atomics_gcc
1770     atomics_suncc
1771     atomics_win32
1772 "
1773
1774 AUTODETECT_LIBS="
1775     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1776     $HWACCEL_AUTODETECT_LIBRARY_LIST
1777     $THREADS_LIST
1778 "
1779
1780 ARCH_LIST="
1781     aarch64
1782     alpha
1783     arm
1784     avr32
1785     avr32_ap
1786     avr32_uc
1787     bfin
1788     ia64
1789     m68k
1790     mips
1791     mips64
1792     parisc
1793     ppc
1794     ppc64
1795     s390
1796     sh4
1797     sparc
1798     sparc64
1799     tilegx
1800     tilepro
1801     tomi
1802     x86
1803     x86_32
1804     x86_64
1805 "
1806
1807 ARCH_EXT_LIST_ARM="
1808     armv5te
1809     armv6
1810     armv6t2
1811     armv8
1812     neon
1813     vfp
1814     vfpv3
1815     setend
1816 "
1817
1818 ARCH_EXT_LIST_MIPS="
1819     mipsfpu
1820     mips32r2
1821     mips32r5
1822     mips64r2
1823     mips32r6
1824     mips64r6
1825     mipsdsp
1826     mipsdspr2
1827     msa
1828 "
1829
1830 ARCH_EXT_LIST_LOONGSON="
1831     loongson2
1832     loongson3
1833     mmi
1834 "
1835
1836 ARCH_EXT_LIST_X86_SIMD="
1837     aesni
1838     amd3dnow
1839     amd3dnowext
1840     avx
1841     avx2
1842     fma3
1843     fma4
1844     mmx
1845     mmxext
1846     sse
1847     sse2
1848     sse3
1849     sse4
1850     sse42
1851     ssse3
1852     xop
1853 "
1854
1855 ARCH_EXT_LIST_PPC="
1856     altivec
1857     dcbzl
1858     ldbrx
1859     power8
1860     ppc4xx
1861     vsx
1862 "
1863
1864 ARCH_EXT_LIST_X86="
1865     $ARCH_EXT_LIST_X86_SIMD
1866     cpunop
1867     i686
1868 "
1869
1870 ARCH_EXT_LIST="
1871     $ARCH_EXT_LIST_ARM
1872     $ARCH_EXT_LIST_PPC
1873     $ARCH_EXT_LIST_X86
1874     $ARCH_EXT_LIST_MIPS
1875     $ARCH_EXT_LIST_LOONGSON
1876 "
1877
1878 ARCH_FEATURES="
1879     aligned_stack
1880     fast_64bit
1881     fast_clz
1882     fast_cmov
1883     local_aligned
1884     simd_align_16
1885     simd_align_32
1886 "
1887
1888 BUILTIN_LIST="
1889     atomic_cas_ptr
1890     machine_rw_barrier
1891     MemoryBarrier
1892     mm_empty
1893     rdtsc
1894     sarestart
1895     sem_timedwait
1896     sync_val_compare_and_swap
1897 "
1898 HAVE_LIST_CMDLINE="
1899     inline_asm
1900     symver
1901     x86asm
1902 "
1903
1904 HAVE_LIST_PUB="
1905     bigendian
1906     fast_unaligned
1907 "
1908
1909 HEADERS_LIST="
1910     arpa_inet_h
1911     asm_types_h
1912     cdio_paranoia_h
1913     cdio_paranoia_paranoia_h
1914     cuda_h
1915     dispatch_dispatch_h
1916     dev_bktr_ioctl_bt848_h
1917     dev_bktr_ioctl_meteor_h
1918     dev_ic_bt8xx_h
1919     dev_video_bktr_ioctl_bt848_h
1920     dev_video_meteor_ioctl_meteor_h
1921     direct_h
1922     dirent_h
1923     dxgidebug_h
1924     dxva_h
1925     ES2_gl_h
1926     gsm_h
1927     io_h
1928     machine_ioctl_bt848_h
1929     machine_ioctl_meteor_h
1930     malloc_h
1931     opencv2_core_core_c_h
1932     OpenGL_gl3_h
1933     poll_h
1934     sys_param_h
1935     sys_resource_h
1936     sys_select_h
1937     sys_soundcard_h
1938     sys_time_h
1939     sys_un_h
1940     sys_videoio_h
1941     termios_h
1942     udplite_h
1943     unistd_h
1944     valgrind_valgrind_h
1945     windows_h
1946     winsock2_h
1947 "
1948
1949 INTRINSICS_LIST="
1950     intrinsics_neon
1951 "
1952
1953 COMPLEX_FUNCS="
1954     cabs
1955     cexp
1956 "
1957
1958 MATH_FUNCS="
1959     atanf
1960     atan2f
1961     cbrt
1962     cbrtf
1963     copysign
1964     cosf
1965     erf
1966     exp2
1967     exp2f
1968     expf
1969     hypot
1970     isfinite
1971     isinf
1972     isnan
1973     ldexpf
1974     llrint
1975     llrintf
1976     log2
1977     log2f
1978     log10f
1979     lrint
1980     lrintf
1981     powf
1982     rint
1983     round
1984     roundf
1985     sinf
1986     trunc
1987     truncf
1988 "
1989
1990 SYSTEM_FEATURES="
1991     atomics_native
1992     dos_paths
1993     libc_msvcrt
1994     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1995     section_data_rel_ro
1996     threads
1997     uwp
1998     winrt
1999 "
2000
2001 SYSTEM_FUNCS="
2002     access
2003     aligned_malloc
2004     arc4random
2005     clock_gettime
2006     closesocket
2007     CommandLineToArgvW
2008     fcntl
2009     getaddrinfo
2010     gethrtime
2011     getopt
2012     GetProcessAffinityMask
2013     GetProcessMemoryInfo
2014     GetProcessTimes
2015     getrusage
2016     GetSystemTimeAsFileTime
2017     gettimeofday
2018     glob
2019     glXGetProcAddress
2020     gmtime_r
2021     inet_aton
2022     isatty
2023     kbhit
2024     localtime_r
2025     lstat
2026     lzo1x_999_compress
2027     mach_absolute_time
2028     MapViewOfFile
2029     memalign
2030     mkstemp
2031     mmap
2032     mprotect
2033     nanosleep
2034     PeekNamedPipe
2035     posix_memalign
2036     pthread_cancel
2037     sched_getaffinity
2038     SecItemImport
2039     SetConsoleTextAttribute
2040     SetConsoleCtrlHandler
2041     setmode
2042     setrlimit
2043     Sleep
2044     strerror_r
2045     sysconf
2046     sysctl
2047     usleep
2048     UTGetOSTypeFromString
2049     VirtualAlloc
2050     wglGetProcAddress
2051 "
2052
2053 SYSTEM_LIBRARIES="
2054     vaapi_drm
2055     vaapi_x11
2056     vdpau_x11
2057     wincrypt
2058 "
2059
2060 TOOLCHAIN_FEATURES="
2061     as_arch_directive
2062     as_fpu_directive
2063     as_func
2064     as_object_arch
2065     asm_mod_q
2066     blocks_extension
2067     ebp_available
2068     ebx_available
2069     gnu_as
2070     gnu_windres
2071     ibm_asm
2072     inline_asm_direct_symbol_refs
2073     inline_asm_labels
2074     inline_asm_nonlocal_labels
2075     pragma_deprecated
2076     rsync_contimeout
2077     symver_asm_label
2078     symver_gnu_asm
2079     vfp_args
2080     xform_asm
2081     xmm_clobbers
2082 "
2083
2084 TYPES_LIST="
2085     CONDITION_VARIABLE_Ptr
2086     kCMVideoCodecType_HEVC
2087     socklen_t
2088     struct_addrinfo
2089     struct_group_source_req
2090     struct_ip_mreq_source
2091     struct_ipv6_mreq
2092     struct_msghdr_msg_flags
2093     struct_pollfd
2094     struct_rusage_ru_maxrss
2095     struct_sctp_event_subscribe
2096     struct_sockaddr_in6
2097     struct_sockaddr_sa_len
2098     struct_sockaddr_storage
2099     struct_stat_st_mtim_tv_nsec
2100     struct_v4l2_frmivalenum_discrete
2101 "
2102
2103 HAVE_LIST="
2104     $ARCH_EXT_LIST
2105     $(add_suffix _external $ARCH_EXT_LIST)
2106     $(add_suffix _inline   $ARCH_EXT_LIST)
2107     $ARCH_FEATURES
2108     $ATOMICS_LIST
2109     $BUILTIN_LIST
2110     $COMPLEX_FUNCS
2111     $HAVE_LIST_CMDLINE
2112     $HAVE_LIST_PUB
2113     $HEADERS_LIST
2114     $INTRINSICS_LIST
2115     $MATH_FUNCS
2116     $SYSTEM_FEATURES
2117     $SYSTEM_FUNCS
2118     $SYSTEM_LIBRARIES
2119     $THREADS_LIST
2120     $TOOLCHAIN_FEATURES
2121     $TYPES_LIST
2122     makeinfo
2123     makeinfo_html
2124     perl
2125     pod2man
2126     texi2html
2127 "
2128
2129 # options emitted with CONFIG_ prefix but not available on the command line
2130 CONFIG_EXTRA="
2131     aandcttables
2132     ac3dsp
2133     adts_header
2134     audio_frame_queue
2135     audiodsp
2136     blockdsp
2137     bswapdsp
2138     cabac
2139     cbs
2140     cbs_h264
2141     cbs_h265
2142     cbs_mpeg2
2143     dirac_parse
2144     dvprofile
2145     exif
2146     faandct
2147     faanidct
2148     fdctdsp
2149     flacdsp
2150     fmtconvert
2151     frame_thread_encoder
2152     g722dsp
2153     golomb
2154     gplv3
2155     h263dsp
2156     h264chroma
2157     h264dsp
2158     h264parse
2159     h264pred
2160     h264qpel
2161     hevcparse
2162     hpeldsp
2163     huffman
2164     huffyuvdsp
2165     huffyuvencdsp
2166     idctdsp
2167     iirfilter
2168     mdct15
2169     intrax8
2170     iso_media
2171     ividsp
2172     jpegtables
2173     lgplv3
2174     libx262
2175     llauddsp
2176     llviddsp
2177     llvidencdsp
2178     lpc
2179     lzf
2180     me_cmp
2181     mpeg_er
2182     mpegaudio
2183     mpegaudiodsp
2184     mpegaudioheader
2185     mpegvideo
2186     mpegvideoenc
2187     mss34dsp
2188     pixblockdsp
2189     qpeldsp
2190     qsv
2191     qsvdec
2192     qsvenc
2193     qsvvpp
2194     rangecoder
2195     riffdec
2196     riffenc
2197     rtpdec
2198     rtpenc_chain
2199     rv34dsp
2200     sinewin
2201     snappy
2202     srtp
2203     startcode
2204     texturedsp
2205     texturedspenc
2206     tpeldsp
2207     vaapi_1
2208     vaapi_encode
2209     vc1dsp
2210     videodsp
2211     vp3dsp
2212     vp56dsp
2213     vp8dsp
2214     wma_freqs
2215     wmv2dsp
2216 "
2217
2218 CMDLINE_SELECT="
2219     $ARCH_EXT_LIST
2220     $CONFIG_LIST
2221     $HAVE_LIST_CMDLINE
2222     $THREADS_LIST
2223     asm
2224     cross_compile
2225     debug
2226     extra_warnings
2227     logging
2228     lto
2229     optimizations
2230     rpath
2231     stripping
2232 "
2233
2234 PATHS_LIST="
2235     bindir
2236     datadir
2237     docdir
2238     incdir
2239     libdir
2240     mandir
2241     pkgconfigdir
2242     prefix
2243     shlibdir
2244     install_name_dir
2245 "
2246
2247 CMDLINE_SET="
2248     $PATHS_LIST
2249     ar
2250     arch
2251     as
2252     assert_level
2253     build_suffix
2254     cc
2255     objcc
2256     cpu
2257     cross_prefix
2258     custom_allocator
2259     cxx
2260     dep_cc
2261     doxygen
2262     env
2263     extra_version
2264     gas
2265     host_cc
2266     host_cflags
2267     host_extralibs
2268     host_ld
2269     host_ldflags
2270     host_os
2271     ignore_tests
2272     install
2273     ld
2274     ln_s
2275     logfile
2276     malloc_prefix
2277     nm
2278     optflags
2279     nvccflags
2280     pkg_config
2281     pkg_config_flags
2282     progs_suffix
2283     random_seed
2284     ranlib
2285     samples
2286     strip
2287     sws_max_filter_size
2288     sysinclude
2289     sysroot
2290     target_exec
2291     target_os
2292     target_path
2293     target_samples
2294     tempprefix
2295     toolchain
2296     valgrind
2297     x86asmexe
2298 "
2299
2300 CMDLINE_APPEND="
2301     extra_cflags
2302     extra_cxxflags
2303     extra_objcflags
2304     host_cppflags
2305 "
2306
2307 # code dependency declarations
2308
2309 # architecture extensions
2310
2311 armv5te_deps="arm"
2312 armv6_deps="arm"
2313 armv6t2_deps="arm"
2314 armv8_deps="aarch64"
2315 neon_deps_any="aarch64 arm"
2316 intrinsics_neon_deps="neon"
2317 vfp_deps_any="aarch64 arm"
2318 vfpv3_deps="vfp"
2319 setend_deps="arm"
2320
2321 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2322
2323 altivec_deps="ppc"
2324 dcbzl_deps="ppc"
2325 ldbrx_deps="ppc"
2326 ppc4xx_deps="ppc"
2327 vsx_deps="altivec"
2328 power8_deps="vsx"
2329
2330 loongson2_deps="mips"
2331 loongson3_deps="mips"
2332 mips32r2_deps="mips"
2333 mips32r5_deps="mips"
2334 mips32r6_deps="mips"
2335 mips64r2_deps="mips"
2336 mips64r6_deps="mips"
2337 mipsfpu_deps="mips"
2338 mipsdsp_deps="mips"
2339 mipsdspr2_deps="mips"
2340 mmi_deps="mips"
2341 msa_deps="mipsfpu"
2342
2343 cpunop_deps="i686"
2344 x86_64_select="i686"
2345 x86_64_suggest="fast_cmov"
2346
2347 amd3dnow_deps="mmx"
2348 amd3dnowext_deps="amd3dnow"
2349 i686_deps="x86"
2350 mmx_deps="x86"
2351 mmxext_deps="mmx"
2352 sse_deps="mmxext"
2353 sse2_deps="sse"
2354 sse3_deps="sse2"
2355 ssse3_deps="sse3"
2356 sse4_deps="ssse3"
2357 sse42_deps="sse4"
2358 aesni_deps="sse42"
2359 avx_deps="sse42"
2360 xop_deps="avx"
2361 fma3_deps="avx"
2362 fma4_deps="avx"
2363 avx2_deps="avx"
2364
2365 mmx_external_deps="x86asm"
2366 mmx_inline_deps="inline_asm x86"
2367 mmx_suggest="mmx_external mmx_inline"
2368
2369 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2370     eval dep=\$${ext}_deps
2371     eval ${ext}_external_deps='"${dep}_external"'
2372     eval ${ext}_inline_deps='"${dep}_inline"'
2373     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2374 done
2375
2376 aligned_stack_if_any="aarch64 ppc x86"
2377 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2378 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2379 fast_unaligned_if_any="aarch64 ppc x86"
2380 simd_align_16_if_any="altivec neon sse"
2381 simd_align_32_if_any="avx"
2382
2383 # system capabilities
2384 symver_if_any="symver_asm_label symver_gnu_asm"
2385 valgrind_backtrace_conflict="optimizations"
2386 valgrind_backtrace_deps="valgrind_valgrind_h"
2387
2388 # threading support
2389 atomics_gcc_if="sync_val_compare_and_swap"
2390 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2391 atomics_win32_if="MemoryBarrier"
2392 atomics_native_if_any="$ATOMICS_LIST"
2393 w32threads_deps="atomics_native"
2394 threads_if_any="$THREADS_LIST"
2395
2396 # subsystems
2397 cbs_h264_select="cbs golomb"
2398 cbs_h265_select="cbs golomb"
2399 cbs_mpeg2_select="cbs"
2400 dct_select="rdft"
2401 dirac_parse_select="golomb"
2402 error_resilience_select="me_cmp"
2403 faandct_deps="faan"
2404 faandct_select="fdctdsp"
2405 faanidct_deps="faan"
2406 faanidct_select="idctdsp"
2407 h264dsp_select="startcode"
2408 hevcparse_select="golomb"
2409 frame_thread_encoder_deps="encoders threads"
2410 intrax8_select="blockdsp idctdsp"
2411 mdct_select="fft"
2412 mdct15_select="fft"
2413 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2414 mpeg_er_select="error_resilience"
2415 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2416 mpegaudiodsp_select="dct"
2417 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2418 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2419 vc1dsp_select="h264chroma qpeldsp startcode"
2420 rdft_select="fft"
2421
2422 # decoders / encoders
2423 aac_decoder_select="adts_header mdct15 mdct sinewin"
2424 aac_fixed_decoder_select="mdct sinewin"
2425 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2426 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2427 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2428 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2429 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2430 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2431 adpcm_g722_decoder_select="g722dsp"
2432 adpcm_g722_encoder_select="g722dsp"
2433 aic_decoder_select="golomb idctdsp"
2434 alac_encoder_select="lpc"
2435 als_decoder_select="bswapdsp"
2436 amrnb_decoder_select="lsp"
2437 amrwb_decoder_select="lsp"
2438 amv_decoder_select="sp5x_decoder exif"
2439 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2440 ape_decoder_select="bswapdsp llauddsp"
2441 apng_decoder_select="zlib"
2442 apng_encoder_select="llvidencdsp zlib"
2443 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2444 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2445 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2446 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2447 atrac1_decoder_select="mdct sinewin"
2448 atrac3_decoder_select="mdct"
2449 atrac3p_decoder_select="mdct sinewin"
2450 avrn_decoder_select="exif jpegtables"
2451 bink_decoder_select="blockdsp hpeldsp"
2452 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2453 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2454 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2455 clearvideo_decoder_select="idctdsp"
2456 cllc_decoder_select="bswapdsp"
2457 comfortnoise_encoder_select="lpc"
2458 cook_decoder_select="audiodsp mdct sinewin"
2459 cscd_decoder_select="lzo"
2460 cscd_decoder_suggest="zlib"
2461 dca_decoder_select="mdct"
2462 dds_decoder_select="texturedsp"
2463 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2464 dnxhd_decoder_select="blockdsp idctdsp"
2465 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2466 dolby_e_decoder_select="mdct"
2467 dvvideo_decoder_select="dvprofile idctdsp"
2468 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2469 dxa_decoder_select="zlib"
2470 dxv_decoder_select="lzf texturedsp"
2471 eac3_decoder_select="ac3_decoder"
2472 eac3_encoder_select="ac3_encoder"
2473 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2474 eatgq_decoder_select="aandcttables"
2475 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2476 exr_decoder_select="zlib"
2477 ffv1_decoder_select="rangecoder"
2478 ffv1_encoder_select="rangecoder"
2479 ffvhuff_decoder_select="huffyuv_decoder"
2480 ffvhuff_encoder_select="huffyuv_encoder"
2481 fic_decoder_select="golomb"
2482 flac_decoder_select="flacdsp"
2483 flac_encoder_select="bswapdsp flacdsp lpc"
2484 flashsv2_decoder_select="zlib"
2485 flashsv2_encoder_select="zlib"
2486 flashsv_decoder_select="zlib"
2487 flashsv_encoder_select="zlib"
2488 flv_decoder_select="h263_decoder"
2489 flv_encoder_select="h263_encoder"
2490 fourxm_decoder_select="blockdsp bswapdsp"
2491 fraps_decoder_select="bswapdsp huffman"
2492 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2493 g729_decoder_select="audiodsp"
2494 h261_decoder_select="mpegvideo"
2495 h261_encoder_select="aandcttables mpegvideoenc"
2496 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2497 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2498 h263i_decoder_select="h263_decoder"
2499 h263p_decoder_select="h263_decoder"
2500 h263p_encoder_select="h263_encoder"
2501 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2502 h264_decoder_suggest="error_resilience"
2503 hap_decoder_select="snappy texturedsp"
2504 hap_encoder_deps="libsnappy"
2505 hap_encoder_select="texturedspenc"
2506 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2507 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2508 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2509 iac_decoder_select="imc_decoder"
2510 imc_decoder_select="bswapdsp fft mdct sinewin"
2511 indeo3_decoder_select="hpeldsp"
2512 indeo4_decoder_select="ividsp"
2513 indeo5_decoder_select="ividsp"
2514 interplay_video_decoder_select="hpeldsp"
2515 jpegls_decoder_select="mjpeg_decoder"
2516 jv_decoder_select="blockdsp"
2517 lagarith_decoder_select="llviddsp"
2518 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2519 magicyuv_decoder_select="llviddsp"
2520 magicyuv_encoder_select="llvidencdsp"
2521 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2522 metasound_decoder_select="lsp mdct sinewin"
2523 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2524 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2525 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2526 mjpegb_decoder_select="mjpeg_decoder"
2527 mlp_decoder_select="mlp_parser"
2528 mlp_encoder_select="lpc"
2529 motionpixels_decoder_select="bswapdsp"
2530 mp1_decoder_select="mpegaudio"
2531 mp1float_decoder_select="mpegaudio"
2532 mp2_decoder_select="mpegaudio"
2533 mp2float_decoder_select="mpegaudio"
2534 mp3_decoder_select="mpegaudio"
2535 mp3adu_decoder_select="mpegaudio"
2536 mp3adufloat_decoder_select="mpegaudio"
2537 mp3float_decoder_select="mpegaudio"
2538 mp3on4_decoder_select="mpegaudio"
2539 mp3on4float_decoder_select="mpegaudio"
2540 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2541 mpc8_decoder_select="mpegaudiodsp"
2542 mpegvideo_decoder_select="mpegvideo"
2543 mpeg1video_decoder_select="mpegvideo"
2544 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2545 mpeg2video_decoder_select="mpegvideo"
2546 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2547 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2548 mpeg4_encoder_select="h263_encoder"
2549 msa1_decoder_select="mss34dsp"
2550 mscc_decoder_select="zlib"
2551 msmpeg4v1_decoder_select="h263_decoder"
2552 msmpeg4v2_decoder_select="h263_decoder"
2553 msmpeg4v2_encoder_select="h263_encoder"
2554 msmpeg4v3_decoder_select="h263_decoder"
2555 msmpeg4v3_encoder_select="h263_encoder"
2556 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2557 mts2_decoder_select="mss34dsp"
2558 mxpeg_decoder_select="mjpeg_decoder"
2559 nellymoser_decoder_select="mdct sinewin"
2560 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2561 nuv_decoder_select="idctdsp lzo"
2562 on2avc_decoder_select="mdct"
2563 opus_decoder_deps="swresample"
2564 opus_decoder_select="mdct15"
2565 opus_encoder_select="audio_frame_queue mdct15"
2566 png_decoder_select="zlib"
2567 png_encoder_select="llvidencdsp zlib"
2568 prores_decoder_select="blockdsp idctdsp"
2569 prores_encoder_select="fdctdsp"
2570 qcelp_decoder_select="lsp"
2571 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2572 ra_144_decoder_select="audiodsp"
2573 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2574 ralf_decoder_select="golomb"
2575 rawvideo_decoder_select="bswapdsp"
2576 rscc_decoder_select="zlib"
2577 rtjpeg_decoder_select="me_cmp"
2578 rv10_decoder_select="h263_decoder"
2579 rv10_encoder_select="h263_encoder"
2580 rv20_decoder_select="h263_decoder"
2581 rv20_encoder_select="h263_encoder"
2582 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2583 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2584 screenpresso_decoder_select="zlib"
2585 shorten_decoder_select="bswapdsp"
2586 sipr_decoder_select="lsp"
2587 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2588 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2589 sonic_decoder_select="golomb rangecoder"
2590 sonic_encoder_select="golomb rangecoder"
2591 sonic_ls_encoder_select="golomb rangecoder"
2592 sp5x_decoder_select="mjpeg_decoder"
2593 srgc_decoder_select="zlib"
2594 svq1_decoder_select="hpeldsp"
2595 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2596 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2597 svq3_decoder_suggest="zlib"
2598 tak_decoder_select="audiodsp"
2599 tdsc_decoder_select="zlib mjpeg_decoder"
2600 theora_decoder_select="vp3_decoder"
2601 thp_decoder_select="mjpeg_decoder"
2602 tiff_decoder_suggest="zlib lzma"
2603 tiff_encoder_suggest="zlib"
2604 truehd_decoder_select="mlp_parser"
2605 truehd_encoder_select="lpc"
2606 truemotion2_decoder_select="bswapdsp"
2607 truespeech_decoder_select="bswapdsp"
2608 tscc_decoder_select="zlib"
2609 twinvq_decoder_select="mdct lsp sinewin"
2610 txd_decoder_select="texturedsp"
2611 utvideo_decoder_select="bswapdsp llviddsp"
2612 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2613 vble_decoder_select="llviddsp"
2614 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2615 vc1image_decoder_select="vc1_decoder"
2616 vorbis_decoder_select="mdct"
2617 vorbis_encoder_select="mdct"
2618 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2619 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2620 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2621 vp6a_decoder_select="vp6_decoder"
2622 vp6f_decoder_select="vp6_decoder"
2623 vp7_decoder_select="h264pred videodsp vp8dsp"
2624 vp8_decoder_select="h264pred videodsp vp8dsp"
2625 vp9_decoder_select="videodsp vp9_parser"
2626 webp_decoder_select="vp8_decoder exif"
2627 wmalossless_decoder_select="llauddsp"
2628 wmapro_decoder_select="mdct sinewin wma_freqs"
2629 wmav1_decoder_select="mdct sinewin wma_freqs"
2630 wmav1_encoder_select="mdct sinewin wma_freqs"
2631 wmav2_decoder_select="mdct sinewin wma_freqs"
2632 wmav2_encoder_select="mdct sinewin wma_freqs"
2633 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2634 wmv1_decoder_select="h263_decoder"
2635 wmv1_encoder_select="h263_encoder"
2636 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2637 wmv2_encoder_select="h263_encoder wmv2dsp"
2638 wmv3_decoder_select="vc1_decoder"
2639 wmv3image_decoder_select="wmv3_decoder"
2640 xma1_decoder_select="wmapro_decoder"
2641 xma2_decoder_select="wmapro_decoder"
2642 zerocodec_decoder_select="zlib"
2643 zlib_decoder_select="zlib"
2644 zlib_encoder_select="zlib"
2645 zmbv_decoder_select="zlib"
2646 zmbv_encoder_select="zlib"
2647
2648 # hardware accelerators
2649 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2650 cuda_deps_any="libdl LoadLibrary"
2651 cuvid_deps="cuda"
2652 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2653 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2654 nvdec_deps="cuda"
2655 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2656 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2657 xvmc_deps="X11_extensions_XvMClib_h"
2658
2659 h263_vaapi_hwaccel_deps="vaapi"
2660 h263_vaapi_hwaccel_select="h263_decoder"
2661 h263_videotoolbox_hwaccel_deps="videotoolbox"
2662 h263_videotoolbox_hwaccel_select="h263_decoder"
2663 h264_cuvid_hwaccel_deps="cuda cuvid"
2664 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2665 h264_d3d11va_hwaccel_deps="d3d11va"
2666 h264_d3d11va_hwaccel_select="h264_decoder"
2667 h264_d3d11va2_hwaccel_deps="d3d11va"
2668 h264_d3d11va2_hwaccel_select="h264_decoder"
2669 h264_dxva2_hwaccel_deps="dxva2"
2670 h264_dxva2_hwaccel_select="h264_decoder"
2671 h264_mediacodec_hwaccel_deps="mediacodec"
2672 h264_mmal_hwaccel_deps="mmal"
2673 h264_nvdec_hwaccel_deps="nvdec"
2674 h264_nvdec_hwaccel_select="h264_decoder"
2675 h264_qsv_hwaccel_deps="libmfx"
2676 h264_vaapi_hwaccel_deps="vaapi"
2677 h264_vaapi_hwaccel_select="h264_decoder"
2678 h264_vdpau_hwaccel_deps="vdpau"
2679 h264_vdpau_hwaccel_select="h264_decoder"
2680 h264_videotoolbox_hwaccel_deps="videotoolbox"
2681 h264_videotoolbox_hwaccel_select="h264_decoder"
2682 hevc_cuvid_hwaccel_deps="cuda cuvid"
2683 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2684 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2685 hevc_d3d11va_hwaccel_select="hevc_decoder"
2686 hevc_mediacodec_hwaccel_deps="mediacodec"
2687 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2688 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2689 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2690 hevc_dxva2_hwaccel_select="hevc_decoder"
2691 hevc_nvdec_hwaccel_deps="nvdec"
2692 hevc_nvdec_hwaccel_select="hevc_decoder"
2693 hevc_qsv_hwaccel_deps="libmfx"
2694 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2695 hevc_vaapi_hwaccel_select="hevc_decoder"
2696 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2697 hevc_vdpau_hwaccel_select="hevc_decoder"
2698 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2699 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2700 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2701 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2702 mpeg_xvmc_hwaccel_deps="xvmc"
2703 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2704 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2705 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2706 mpeg1_vdpau_hwaccel_deps="vdpau"
2707 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2708 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2709 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2710 mpeg1_xvmc_hwaccel_deps="xvmc"
2711 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2712 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2713 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2714 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2715 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2716 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2717 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2718 mpeg2_dxva2_hwaccel_deps="dxva2"
2719 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2720 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2721 mpeg2_mmal_hwaccel_deps="mmal"
2722 mpeg2_qsv_hwaccel_deps="libmfx"
2723 mpeg2_vaapi_hwaccel_deps="vaapi"
2724 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_vdpau_hwaccel_deps="vdpau"
2726 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2728 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_xvmc_hwaccel_deps="xvmc"
2730 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2731 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2732 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2733 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2734 mpeg4_mmal_hwaccel_deps="mmal"
2735 mpeg4_vaapi_hwaccel_deps="vaapi"
2736 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2737 mpeg4_vdpau_hwaccel_deps="vdpau"
2738 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2739 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2740 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2741 vc1_cuvid_hwaccel_deps="cuda cuvid"
2742 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2743 vc1_d3d11va_hwaccel_deps="d3d11va"
2744 vc1_d3d11va_hwaccel_select="vc1_decoder"
2745 vc1_d3d11va2_hwaccel_deps="d3d11va"
2746 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2747 vc1_dxva2_hwaccel_deps="dxva2"
2748 vc1_dxva2_hwaccel_select="vc1_decoder"
2749 vc1_mmal_hwaccel_deps="mmal"
2750 vc1_qsv_hwaccel_deps="libmfx"
2751 vc1_vaapi_hwaccel_deps="vaapi"
2752 vc1_vaapi_hwaccel_select="vc1_decoder"
2753 vc1_vdpau_hwaccel_deps="vdpau"
2754 vc1_vdpau_hwaccel_select="vc1_decoder"
2755 vp8_cuvid_hwaccel_deps="cuda cuvid"
2756 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2757 vp9_cuvid_hwaccel_deps="cuda cuvid"
2758 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2759 vp8_mediacodec_hwaccel_deps="mediacodec"
2760 vp8_qsv_hwaccel_deps="libmfx"
2761 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2762 vp9_d3d11va_hwaccel_select="vp9_decoder"
2763 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2764 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2765 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2766 vp9_dxva2_hwaccel_select="vp9_decoder"
2767 vp9_mediacodec_hwaccel_deps="mediacodec"
2768 vp9_nvdec_hwaccel_deps="nvdec"
2769 vp9_nvdec_hwaccel_select="vp9_decoder"
2770 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2771 vp9_vaapi_hwaccel_select="vp9_decoder"
2772 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2773 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2774 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2775 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2776 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2777
2778 # hardware-accelerated codecs
2779 omx_deps="libdl pthreads"
2780 omx_rpi_select="omx"
2781 qsv_deps="libmfx"
2782 qsvdec_select="qsv"
2783 qsvenc_select="qsv"
2784 qsvvpp_select="qsv"
2785 vaapi_encode_deps="vaapi"
2786 v4l2_m2m_deps_any="linux_videodev2_h"
2787
2788 hwupload_cuda_filter_deps="cuda"
2789 scale_npp_filter_deps="cuda libnpp"
2790 scale_cuda_filter_deps="cuda_sdk"
2791 thumbnail_cuda_filter_deps="cuda_sdk"
2792
2793 nvenc_deps="cuda"
2794 nvenc_deps_any="libdl LoadLibrary"
2795 nvenc_encoder_deps="nvenc"
2796
2797 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2798 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2799 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2800 h264_cuvid_decoder_deps="cuda cuvid"
2801 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2802 h264_mediacodec_decoder_deps="mediacodec"
2803 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2804 h264_mmal_decoder_deps="mmal"
2805 h264_nvenc_encoder_deps="nvenc"
2806 h264_omx_encoder_deps="omx"
2807 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2808 h264_qsv_encoder_select="qsvenc"
2809 h264_rkmpp_decoder_deps="rkmpp"
2810 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2811 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2812 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2813 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2814 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2815 hevc_cuvid_decoder_deps="cuda cuvid"
2816 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2817 hevc_mediacodec_decoder_deps="mediacodec"
2818 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2819 hevc_nvenc_encoder_deps="nvenc"
2820 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2821 hevc_qsv_encoder_select="hevcparse qsvenc"
2822 hevc_rkmpp_decoder_deps="rkmpp"
2823 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2824 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2825 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2826 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2827 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2828 mjpeg_cuvid_decoder_deps="cuda cuvid"
2829 mjpeg_qsv_encoder_deps="libmfx"
2830 mjpeg_qsv_encoder_select="qsvenc"
2831 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2832 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2833 mpeg1_cuvid_decoder_deps="cuda cuvid"
2834 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2835 mpeg2_crystalhd_decoder_select="crystalhd"
2836 mpeg2_cuvid_decoder_deps="cuda cuvid"
2837 mpeg2_mmal_decoder_deps="mmal"
2838 mpeg2_mediacodec_decoder_deps="mediacodec"
2839 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2840 mpeg2_qsv_encoder_select="qsvenc"
2841 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2842 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2843 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2844 mpeg4_crystalhd_decoder_select="crystalhd"
2845 mpeg4_cuvid_decoder_deps="cuda cuvid"
2846 mpeg4_mediacodec_decoder_deps="mediacodec"
2847 mpeg4_mmal_decoder_deps="mmal"
2848 mpeg4_omx_encoder_deps="omx"
2849 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2850 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2851 msmpeg4_crystalhd_decoder_select="crystalhd"
2852 nvenc_h264_encoder_select="h264_nvenc_encoder"
2853 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2854 vc1_crystalhd_decoder_select="crystalhd"
2855 vc1_cuvid_decoder_deps="cuda cuvid"
2856 vc1_mmal_decoder_deps="mmal"
2857 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2858 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2859 vp8_cuvid_decoder_deps="cuda cuvid"
2860 vp8_mediacodec_decoder_deps="mediacodec"
2861 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2862 vp8_rkmpp_decoder_deps="rkmpp"
2863 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2864 vp8_vaapi_encoder_select="vaapi_encode"
2865 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2866 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2867 vp9_cuvid_decoder_deps="cuda cuvid"
2868 vp9_mediacodec_decoder_deps="mediacodec"
2869 vp9_rkmpp_decoder_deps="rkmpp"
2870 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2871 vp9_vaapi_encoder_select="vaapi_encode"
2872 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2873 wmv3_crystalhd_decoder_select="crystalhd"
2874
2875 # parsers
2876 aac_parser_select="adts_header"
2877 h264_parser_select="golomb h264dsp h264parse"
2878 hevc_parser_select="hevcparse"
2879 mpegaudio_parser_select="mpegaudioheader"
2880 mpegvideo_parser_select="mpegvideo"
2881 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2882 vc1_parser_select="vc1dsp"
2883
2884 # bitstream_filters
2885 aac_adtstoasc_bsf_select="adts_header"
2886 h264_metadata_bsf_select="cbs_h264"
2887 h264_redundant_pps_bsf_select="cbs_h264"
2888 hevc_metadata_bsf_select="cbs_h265"
2889 mjpeg2jpeg_bsf_select="jpegtables"
2890 mpeg2_metadata_bsf_select="cbs_mpeg2"
2891 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2892
2893 # external libraries
2894 aac_at_decoder_deps="audiotoolbox"
2895 ac3_at_decoder_deps="audiotoolbox"
2896 ac3_at_decoder_select="ac3_parser"
2897 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2898 alac_at_decoder_deps="audiotoolbox"
2899 amr_nb_at_decoder_deps="audiotoolbox"
2900 avisynth_deps_any="libdl LoadLibrary"
2901 avisynth_demuxer_deps="avisynth"
2902 avisynth_demuxer_select="riffdec"
2903 eac3_at_decoder_deps="audiotoolbox"
2904 eac3_at_decoder_select="ac3_parser"
2905 gsm_ms_at_decoder_deps="audiotoolbox"
2906 ilbc_at_decoder_deps="audiotoolbox"
2907 mp1_at_decoder_deps="audiotoolbox"
2908 mp2_at_decoder_deps="audiotoolbox"
2909 mp3_at_decoder_deps="audiotoolbox"
2910 mp1_at_decoder_select="mpegaudioheader"
2911 mp2_at_decoder_select="mpegaudioheader"
2912 mp3_at_decoder_select="mpegaudioheader"
2913 pcm_alaw_at_decoder_deps="audiotoolbox"
2914 pcm_mulaw_at_decoder_deps="audiotoolbox"
2915 qdmc_at_decoder_deps="audiotoolbox"
2916 qdm2_at_decoder_deps="audiotoolbox"
2917 aac_at_encoder_deps="audiotoolbox"
2918 aac_at_encoder_select="audio_frame_queue"
2919 alac_at_encoder_deps="audiotoolbox"
2920 alac_at_encoder_select="audio_frame_queue"
2921 ilbc_at_encoder_deps="audiotoolbox"
2922 ilbc_at_encoder_select="audio_frame_queue"
2923 pcm_alaw_at_encoder_deps="audiotoolbox"
2924 pcm_alaw_at_encoder_select="audio_frame_queue"
2925 pcm_mulaw_at_encoder_deps="audiotoolbox"
2926 pcm_mulaw_at_encoder_select="audio_frame_queue"
2927 chromaprint_muxer_deps="chromaprint"
2928 h264_videotoolbox_encoder_deps="pthreads"
2929 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2930 libcelt_decoder_deps="libcelt"
2931 libfdk_aac_decoder_deps="libfdk_aac"
2932 libfdk_aac_encoder_deps="libfdk_aac"
2933 libfdk_aac_encoder_select="audio_frame_queue"
2934 libgme_demuxer_deps="libgme"
2935 libgsm_decoder_deps="libgsm"
2936 libgsm_encoder_deps="libgsm"
2937 libgsm_ms_decoder_deps="libgsm"
2938 libgsm_ms_encoder_deps="libgsm"
2939 libilbc_decoder_deps="libilbc"
2940 libilbc_encoder_deps="libilbc"
2941 libkvazaar_encoder_deps="libkvazaar"
2942 libmodplug_demuxer_deps="libmodplug"
2943 libmp3lame_encoder_deps="libmp3lame"
2944 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2945 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2946 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2947 libopencore_amrnb_encoder_select="audio_frame_queue"
2948 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2949 libopenh264_decoder_deps="libopenh264"
2950 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2951 libopenh264_encoder_deps="libopenh264"
2952 libopenjpeg_decoder_deps="libopenjpeg"
2953 libopenjpeg_encoder_deps="libopenjpeg"
2954 libopenmpt_demuxer_deps="libopenmpt"
2955 libopus_decoder_deps="libopus"
2956 libopus_encoder_deps="libopus"
2957 libopus_encoder_select="audio_frame_queue"
2958 librsvg_decoder_deps="librsvg"
2959 libshine_encoder_deps="libshine"
2960 libshine_encoder_select="audio_frame_queue"
2961 libspeex_decoder_deps="libspeex"
2962 libspeex_encoder_deps="libspeex"
2963 libspeex_encoder_select="audio_frame_queue"
2964 libtheora_encoder_deps="libtheora"
2965 libtwolame_encoder_deps="libtwolame"
2966 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2967 libvorbis_decoder_deps="libvorbis"
2968 libvorbis_encoder_deps="libvorbis libvorbisenc"
2969 libvorbis_encoder_select="audio_frame_queue"
2970 libvpx_vp8_decoder_deps="libvpx"
2971 libvpx_vp8_encoder_deps="libvpx"
2972 libvpx_vp9_decoder_deps="libvpx"
2973 libvpx_vp9_encoder_deps="libvpx"
2974 libwavpack_encoder_deps="libwavpack"
2975 libwavpack_encoder_select="audio_frame_queue"
2976 libwebp_encoder_deps="libwebp"
2977 libwebp_anim_encoder_deps="libwebp"
2978 libx262_encoder_deps="libx262"
2979 libx264_encoder_deps="libx264"
2980 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2981 libx264rgb_encoder_select="libx264_encoder"
2982 libx265_encoder_deps="libx265"
2983 libxavs_encoder_deps="libxavs"
2984 libxvid_encoder_deps="libxvid"
2985 libzvbi_teletext_decoder_deps="libzvbi"
2986 videotoolbox_suggest="coreservices"
2987 videotoolbox_deps="corefoundation coremedia corevideo"
2988 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2989
2990 # demuxers / muxers
2991 ac3_demuxer_select="ac3_parser"
2992 aiff_muxer_select="iso_media"
2993 asf_demuxer_select="riffdec"
2994 asf_o_demuxer_select="riffdec"
2995 asf_muxer_select="riffenc"
2996 asf_stream_muxer_select="asf_muxer"
2997 avi_demuxer_select="iso_media riffdec exif"
2998 avi_muxer_select="riffenc"
2999 caf_demuxer_select="iso_media riffdec"
3000 caf_muxer_select="iso_media"
3001 dash_muxer_select="mp4_muxer"
3002 dash_demuxer_deps="libxml2"
3003 dirac_demuxer_select="dirac_parser"
3004 dts_demuxer_select="dca_parser"
3005 dtshd_demuxer_select="dca_parser"
3006 dv_demuxer_select="dvprofile"
3007 dv_muxer_select="dvprofile"
3008 dxa_demuxer_select="riffdec"
3009 eac3_demuxer_select="ac3_parser"
3010 f4v_muxer_select="mov_muxer"
3011 fifo_muxer_deps="threads"
3012 flac_demuxer_select="flac_parser"
3013 hds_muxer_select="flv_muxer"
3014 hls_muxer_select="mpegts_muxer"
3015 hls_muxer_suggest="gcrypt openssl"
3016 image2_alias_pix_demuxer_select="image2_demuxer"
3017 image2_brender_pix_demuxer_select="image2_demuxer"
3018 ipod_muxer_select="mov_muxer"
3019 ismv_muxer_select="mov_muxer"
3020 matroska_audio_muxer_select="matroska_muxer"
3021 matroska_demuxer_select="iso_media riffdec"
3022 matroska_demuxer_suggest="bzlib lzo zlib"
3023 matroska_muxer_select="iso_media riffenc"
3024 mmf_muxer_select="riffenc"
3025 mov_demuxer_select="iso_media riffdec"
3026 mov_demuxer_suggest="zlib"
3027 mov_muxer_select="iso_media riffenc rtpenc_chain"
3028 mp3_demuxer_select="mpegaudio_parser"
3029 mp3_muxer_select="mpegaudioheader"
3030 mp4_muxer_select="mov_muxer"
3031 mpegts_demuxer_select="iso_media"
3032 mpegts_muxer_select="adts_muxer latm_muxer"
3033 mpegtsraw_demuxer_select="mpegts_demuxer"
3034 mxf_d10_muxer_select="mxf_muxer"
3035 mxf_opatom_muxer_select="mxf_muxer"
3036 nut_muxer_select="riffenc"
3037 nuv_demuxer_select="riffdec"
3038 oga_muxer_select="ogg_muxer"
3039 ogg_demuxer_select="dirac_parse"
3040 ogv_muxer_select="ogg_muxer"
3041 opus_muxer_select="ogg_muxer"
3042 psp_muxer_select="mov_muxer"
3043 rtp_demuxer_select="sdp_demuxer"
3044 rtp_muxer_select="golomb"
3045 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3046 rtsp_demuxer_select="http_protocol rtpdec"
3047 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3048 sap_demuxer_select="sdp_demuxer"
3049 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3050 sdp_demuxer_select="rtpdec"
3051 smoothstreaming_muxer_select="ismv_muxer"
3052 spdif_demuxer_select="adts_header"
3053 spdif_muxer_select="adts_header"
3054 spx_muxer_select="ogg_muxer"
3055 swf_demuxer_suggest="zlib"
3056 tak_demuxer_select="tak_parser"
3057 tg2_muxer_select="mov_muxer"
3058 tgp_muxer_select="mov_muxer"
3059 vobsub_demuxer_select="mpegps_demuxer"
3060 w64_demuxer_select="wav_demuxer"
3061 w64_muxer_select="wav_muxer"
3062 wav_demuxer_select="riffdec"
3063 wav_muxer_select="riffenc"
3064 webm_muxer_select="iso_media riffenc"
3065 webm_dash_manifest_demuxer_select="matroska_demuxer"
3066 wtv_demuxer_select="mpegts_demuxer riffdec"
3067 wtv_muxer_select="mpegts_muxer riffenc"
3068 xmv_demuxer_select="riffdec"
3069 xwma_demuxer_select="riffdec"
3070
3071 # indevs / outdevs
3072 alsa_indev_deps="alsa"
3073 alsa_outdev_deps="alsa"
3074 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3075 avfoundation_indev_suggest="coregraphics applicationservices"
3076 avfoundation_indev_extralibs="-framework Foundation"
3077 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3078 caca_outdev_deps="libcaca"
3079 decklink_deps_any="libdl LoadLibrary"
3080 decklink_indev_deps="decklink threads"
3081 decklink_indev_extralibs="-lstdc++"
3082 decklink_outdev_deps="decklink threads"
3083 decklink_outdev_extralibs="-lstdc++"
3084 libndi_newtek_indev_deps="libndi_newtek"
3085 libndi_newtek_indev_extralibs="-lndi"
3086 libndi_newtek_outdev_deps="libndi_newtek"
3087 libndi_newtek_outdev_extralibs="-lndi"
3088 dshow_indev_deps="IBaseFilter"
3089 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3090 fbdev_indev_deps="linux_fb_h"
3091 fbdev_outdev_deps="linux_fb_h"
3092 gdigrab_indev_deps="CreateDIBSection"
3093 gdigrab_indev_extralibs="-lgdi32"
3094 gdigrab_indev_select="bmp_decoder"
3095 iec61883_indev_deps="libiec61883"
3096 jack_indev_deps="libjack"
3097 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3098 kmsgrab_indev_deps="libdrm"
3099 lavfi_indev_deps="avfilter"
3100 libcdio_indev_deps="libcdio"
3101 libdc1394_indev_deps="libdc1394"
3102 openal_indev_deps="openal"
3103 opengl_outdev_deps="opengl"
3104 oss_indev_deps_any="sys_soundcard_h"
3105 oss_outdev_deps_any="sys_soundcard_h"
3106 pulse_indev_deps="libpulse"
3107 pulse_outdev_deps="libpulse"
3108 sdl2_outdev_deps="sdl2"
3109 sndio_indev_deps="sndio"
3110 sndio_outdev_deps="sndio"
3111 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3112 v4l2_indev_suggest="libv4l2"
3113 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3114 v4l2_outdev_suggest="libv4l2"
3115 vfwcap_indev_deps="vfw32 vfwcap_defines"
3116 xcbgrab_indev_deps="libxcb"
3117 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3118 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3119 xv_outdev_extralibs="-lXv -lX11 -lXext"
3120
3121 # protocols
3122 async_protocol_deps="threads"
3123 bluray_protocol_deps="libbluray"
3124 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3125 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3126 ffrtmpcrypt_protocol_select="tcp_protocol"
3127 ffrtmphttp_protocol_conflict="librtmp_protocol"
3128 ffrtmphttp_protocol_select="http_protocol"
3129 ftp_protocol_select="tcp_protocol"
3130 gopher_protocol_select="network"
3131 http_protocol_select="tcp_protocol"
3132 http_protocol_suggest="zlib"
3133 httpproxy_protocol_select="tcp_protocol"
3134 httpproxy_protocol_suggest="zlib"
3135 https_protocol_select="tls_protocol"
3136 https_protocol_suggest="zlib"
3137 icecast_protocol_select="http_protocol"
3138 librtmp_protocol_deps="librtmp"
3139 librtmpe_protocol_deps="librtmp"
3140 librtmps_protocol_deps="librtmp"
3141 librtmpt_protocol_deps="librtmp"
3142 librtmpte_protocol_deps="librtmp"
3143 libsmbclient_protocol_deps="libsmbclient gplv3"
3144 libssh_protocol_deps="libssh"
3145 mmsh_protocol_select="http_protocol"
3146 mmst_protocol_select="network"
3147 rtmp_protocol_conflict="librtmp_protocol"
3148 rtmp_protocol_select="tcp_protocol"
3149 rtmp_protocol_suggest="zlib"
3150 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3151 rtmpe_protocol_suggest="zlib"
3152 rtmps_protocol_conflict="librtmp_protocol"
3153 rtmps_protocol_select="tls_protocol"
3154 rtmps_protocol_suggest="zlib"
3155 rtmpt_protocol_select="ffrtmphttp_protocol"
3156 rtmpt_protocol_suggest="zlib"
3157 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3158 rtmpte_protocol_suggest="zlib"
3159 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3160 rtmpts_protocol_suggest="zlib"
3161 rtp_protocol_select="udp_protocol"
3162 schannel_conflict="openssl gnutls"
3163 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3164 sctp_protocol_select="network"
3165 securetransport_conflict="openssl gnutls"
3166 srtp_protocol_select="rtp_protocol srtp"
3167 tcp_protocol_select="network"
3168 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3169 tls_protocol_select="tcp_protocol"
3170 udp_protocol_select="network"
3171 udplite_protocol_select="network"
3172 unix_protocol_deps="sys_un_h"
3173 unix_protocol_select="network"
3174
3175 # filters
3176 afftfilt_filter_deps="avcodec"
3177 afftfilt_filter_select="fft"
3178 afir_filter_deps="avcodec"
3179 afir_filter_select="fft"
3180 amovie_filter_deps="avcodec avformat"
3181 aresample_filter_deps="swresample"
3182 ass_filter_deps="libass"
3183 atempo_filter_deps="avcodec"
3184 atempo_filter_select="rdft"
3185 azmq_filter_deps="libzmq"
3186 blackframe_filter_deps="gpl"
3187 boxblur_filter_deps="gpl"
3188 bs2b_filter_deps="libbs2b"
3189 colormatrix_filter_deps="gpl"
3190 coreimage_filter_deps="coreimage appkit"
3191 coreimage_filter_extralibs="-framework OpenGL"
3192 coreimagesrc_filter_deps="coreimage appkit"
3193 coreimagesrc_filter_extralibs="-framework OpenGL"
3194 cover_rect_filter_deps="avcodec avformat gpl"
3195 cropdetect_filter_deps="gpl"
3196 deinterlace_qsv_filter_deps="libmfx"
3197 deinterlace_vaapi_filter_deps="vaapi"
3198 delogo_filter_deps="gpl"
3199 deshake_filter_select="pixelutils"
3200 deshake_filter_suggest="opencl"
3201 drawtext_filter_deps="libfreetype"
3202 drawtext_filter_suggest="libfontconfig libfribidi"
3203 elbg_filter_deps="avcodec"
3204 eq_filter_deps="gpl"
3205 fftfilt_filter_deps="avcodec"
3206 fftfilt_filter_select="rdft"
3207 find_rect_filter_deps="avcodec avformat gpl"
3208 firequalizer_filter_deps="avcodec"
3209 firequalizer_filter_select="rdft"
3210 flite_filter_deps="libflite"
3211 framerate_filter_select="pixelutils"
3212 frei0r_filter_deps="frei0r libdl"
3213 frei0r_src_filter_deps="frei0r libdl"
3214 fspp_filter_deps="gpl"
3215 geq_filter_deps="gpl"
3216 histeq_filter_deps="gpl"
3217 hqdn3d_filter_deps="gpl"
3218 interlace_filter_deps="gpl"
3219 kerndeint_filter_deps="gpl"
3220 ladspa_filter_deps="ladspa libdl"
3221 mcdeint_filter_deps="avcodec gpl"
3222 movie_filter_deps="avcodec avformat"
3223 mpdecimate_filter_deps="gpl"
3224 mpdecimate_filter_select="pixelutils"
3225 mptestsrc_filter_deps="gpl"
3226 negate_filter_deps="lut_filter"
3227 nnedi_filter_deps="gpl"
3228 ocr_filter_deps="libtesseract"
3229 ocv_filter_deps="libopencv"
3230 overlay_qsv_filter_deps="libmfx"
3231 overlay_qsv_filter_select="qsvvpp"
3232 owdenoise_filter_deps="gpl"
3233 pan_filter_deps="swresample"
3234 perspective_filter_deps="gpl"
3235 phase_filter_deps="gpl"
3236 pp7_filter_deps="gpl"
3237 pp_filter_deps="gpl postproc"
3238 pullup_filter_deps="gpl"
3239 removelogo_filter_deps="avcodec avformat swscale"
3240 repeatfields_filter_deps="gpl"
3241 resample_filter_deps="avresample"
3242 rubberband_filter_deps="librubberband"
3243 sab_filter_deps="gpl swscale"
3244 scale2ref_filter_deps="swscale"
3245 scale_filter_deps="swscale"
3246 scale_qsv_filter_deps="libmfx"
3247 select_filter_select="pixelutils"
3248 showcqt_filter_deps="avcodec avformat swscale"
3249 showcqt_filter_suggest="libfontconfig libfreetype"
3250 showcqt_filter_select="fft"
3251 showfreqs_filter_deps="avcodec"
3252 showfreqs_filter_select="fft"
3253 showspectrum_filter_deps="avcodec"
3254 showspectrum_filter_select="fft"
3255 showspectrumpic_filter_deps="avcodec"
3256 showspectrumpic_filter_select="fft"
3257 signature_filter_deps="gpl avcodec avformat"
3258 smartblur_filter_deps="gpl swscale"
3259 sofalizer_filter_deps="libmysofa avcodec"
3260 sofalizer_filter_select="fft"
3261 spectrumsynth_filter_deps="avcodec"
3262 spectrumsynth_filter_select="fft"
3263 spp_filter_deps="gpl avcodec"
3264 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3265 stereo3d_filter_deps="gpl"
3266 subtitles_filter_deps="avformat avcodec libass"
3267 super2xsai_filter_deps="gpl"
3268 pixfmts_super2xsai_test_deps="super2xsai_filter"
3269 tinterlace_filter_deps="gpl"
3270 tinterlace_merge_test_deps="tinterlace_filter"
3271 tinterlace_pad_test_deps="tinterlace_filter"
3272 tonemap_filter_deps="const_nan"
3273 uspp_filter_deps="gpl avcodec"
3274 unsharp_filter_suggest="opencl"
3275 vaguedenoiser_filter_deps="gpl"
3276 vidstabdetect_filter_deps="libvidstab"
3277 vidstabtransform_filter_deps="libvidstab"
3278 libvmaf_filter_deps="libvmaf"
3279 zmq_filter_deps="libzmq"
3280 zoompan_filter_deps="swscale"
3281 zscale_filter_deps="libzimg const_nan"
3282 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3283 vpp_qsv_filter_deps="libmfx"
3284 vpp_qsv_filter_select="qsvvpp"
3285
3286 # examples
3287 avio_dir_cmd_deps="avformat avutil"
3288 avio_reading_deps="avformat avcodec avutil"
3289 decode_audio_example_deps="avcodec avutil"
3290 decode_video_example_deps="avcodec avutil"
3291 demuxing_decoding_example_deps="avcodec avformat avutil"
3292 encode_audio_example_deps="avcodec avutil"
3293 encode_video_example_deps="avcodec avutil"
3294 extract_mvs_example_deps="avcodec avformat avutil"
3295 filter_audio_example_deps="avfilter avutil"
3296 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3297 filtering_video_example_deps="avfilter avcodec avformat avutil"
3298 http_multiclient_example_deps="avformat avutil fork"
3299 hw_decode_example_deps="avcodec avformat avutil"
3300 metadata_example_deps="avformat avutil"
3301 muxing_example_deps="avcodec avformat avutil swscale"
3302 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3303 remuxing_example_deps="avcodec avformat avutil"
3304 resampling_audio_example_deps="avutil swresample"
3305 scaling_video_example_deps="avutil swscale"
3306 transcode_aac_example_deps="avcodec avformat swresample"
3307 transcoding_example_deps="avfilter avcodec avformat avutil"
3308
3309 # EXTRALIBS_LIST
3310 cpu_init_extralibs="pthreads_extralibs"
3311 cws2fws_extralibs="zlib_extralibs"
3312
3313 # libraries, in linking order
3314 avcodec_deps="avutil"
3315 avcodec_suggest="libm"
3316 avcodec_select="null_bsf"
3317 avdevice_deps="avformat avcodec avutil"
3318 avdevice_suggest="libm"
3319 avfilter_deps="avutil"
3320 avfilter_suggest="libm"
3321 avformat_deps="avcodec avutil"
3322 avformat_suggest="libm network zlib"
3323 avresample_deps="avutil"
3324 avresample_suggest="libm"
3325 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3326 postproc_deps="avutil gpl"
3327 postproc_suggest="libm"
3328 swresample_deps="avutil"
3329 swresample_suggest="libm libsoxr"
3330 swscale_deps="avutil"
3331 swscale_suggest="libm"
3332
3333 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3334 avfilter_extralibs="pthreads_extralibs"
3335 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3336
3337 # programs
3338 ffmpeg_deps="avcodec avfilter avformat swresample"
3339 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3340                null_filter
3341                trim_filter"
3342 ffmpeg_suggest="ole32 psapi shell32"
3343 ffplay_deps="avcodec avformat swscale swresample sdl2"
3344 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3345 ffplay_suggest="shell32"
3346 ffprobe_deps="avcodec avformat"
3347 ffprobe_suggest="shell32"
3348 ffserver_deps="avformat fork sarestart"
3349 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3350
3351 # documentation
3352 podpages_deps="perl"
3353 manpages_deps="perl pod2man"
3354 htmlpages_deps="perl"
3355 htmlpages_deps_any="makeinfo_html texi2html"
3356 txtpages_deps="perl makeinfo"
3357 doc_deps_any="manpages htmlpages podpages txtpages"
3358
3359 # default parameters
3360
3361 logfile="ffbuild/config.log"
3362
3363 # installation paths
3364 prefix_default="/usr/local"
3365 bindir_default='${prefix}/bin'
3366 datadir_default='${prefix}/share/ffmpeg'
3367 docdir_default='${prefix}/share/doc/ffmpeg'
3368 incdir_default='${prefix}/include'
3369 libdir_default='${prefix}/lib'
3370 mandir_default='${prefix}/share/man'
3371
3372 # toolchain
3373 ar_default="ar"
3374 cc_default="gcc"
3375 cxx_default="g++"
3376 host_cc_default="gcc"
3377 doxygen_default="doxygen"
3378 install="install"
3379 ln_s_default="ln -s -f"
3380 nm_default="nm -g"
3381 pkg_config_default=pkg-config
3382 ranlib_default="ranlib"
3383 strip_default="strip"
3384 version_script='--version-script'
3385 x86asmexe_default="nasm"
3386 windres_default="windres"
3387 nvcc_default="nvcc"
3388 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3389 striptype="direct"
3390
3391 # OS
3392 target_os_default=$(tolower $(uname -s))
3393 host_os=$target_os_default
3394
3395 # machine
3396 if test "$target_os_default" = aix; then
3397     arch_default=$(uname -p)
3398     strip_default="strip -X32_64"
3399 else
3400     arch_default=$(uname -m)
3401 fi
3402 cpu="generic"
3403 intrinsics="none"
3404
3405 # configurable options
3406 enable $PROGRAM_LIST
3407 enable $DOCUMENT_LIST
3408 enable $EXAMPLE_LIST
3409 enable $(filter_out avresample $LIBRARY_LIST)
3410 enable stripping
3411
3412 enable asm
3413 enable debug
3414 enable doc
3415 enable faan faandct faanidct
3416 enable optimizations
3417 enable runtime_cpudetect
3418 enable safe_bitstream_reader
3419 enable static
3420 enable swscale_alpha
3421 enable valgrind_backtrace
3422
3423 sws_max_filter_size_default=256
3424 set_default sws_max_filter_size
3425
3426 # internal components are enabled by default
3427 enable $EXTRALIBS_LIST
3428
3429 # Avoid external, non-system, libraries getting enabled by dependency resolution
3430 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3431
3432 # build settings
3433 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3434 LIBPREF="lib"
3435 LIBSUF=".a"
3436 FULLNAME='$(NAME)$(BUILDSUF)'
3437 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3438 SLIBPREF="lib"
3439 SLIBSUF=".so"
3440 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3441 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3442 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3443 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3444 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3445 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3446 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3447
3448 asflags_filter=echo
3449 cflags_filter=echo
3450 ldflags_filter=echo
3451
3452 AS_C='-c'
3453 AS_O='-o $@'
3454 CC_C='-c'
3455 CC_E='-E -o $@'
3456 CC_O='-o $@'
3457 CXX_C='-c'
3458 CXX_O='-o $@'
3459 OBJCC_C='-c'
3460 OBJCC_E='-E -o $@'
3461 OBJCC_O='-o $@'
3462 X86ASM_O='-o $@'
3463 LD_O='-o $@'
3464 LD_LIB='-l%'
3465 LD_PATH='-L'
3466 HOSTCC_C='-c'
3467 HOSTCC_E='-E -o $@'
3468 HOSTCC_O='-o $@'
3469 HOSTLD_O='-o $@'
3470 NVCC_C='-c'
3471 NVCC_O='-o $@'
3472
3473 host_extralibs='-lm'
3474 host_cflags_filter=echo
3475 host_ldflags_filter=echo
3476
3477 target_path='$(CURDIR)'
3478
3479 # since the object filename is not given with the -MM flag, the compiler
3480 # is only able to print the basename, and we must add the path ourselves
3481 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3482 DEPFLAGS='-MM'
3483
3484 mkdir -p ffbuild
3485
3486 # find source path
3487 if test -f configure; then
3488     source_path=.
3489 else
3490     source_path=$(cd $(dirname "$0"); pwd)
3491     case "$source_path" in
3492         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3493     esac
3494     test -e "$source_path/config.h" &&
3495         die "Out of tree builds are impossible with config.h in source dir."
3496 fi
3497
3498 for v in "$@"; do
3499     r=${v#*=}
3500     l=${v%"$r"}
3501     r=$(sh_quote "$r")
3502     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3503 done
3504
3505 find_things(){
3506     thing=$1
3507     pattern=$2
3508     file=$source_path/$3
3509     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3510 }
3511
3512 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3513 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3514 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3515 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3516 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3517 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3518 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3519 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3520 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3521
3522 find_things_extern(){
3523     thing=$1
3524     pattern=$2
3525     file=$source_path/$3
3526     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3527 }
3528
3529 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3530 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3531
3532 AVCODEC_COMPONENTS_LIST="
3533     $BSF_LIST
3534     $DECODER_LIST
3535     $ENCODER_LIST
3536     $HWACCEL_LIST
3537     $PARSER_LIST
3538 "
3539
3540 AVDEVICE_COMPONENTS_LIST="
3541     $INDEV_LIST
3542     $OUTDEV_LIST
3543 "
3544
3545 AVFILTER_COMPONENTS_LIST="
3546     $FILTER_LIST
3547 "
3548
3549 AVFORMAT_COMPONENTS_LIST="
3550     $DEMUXER_LIST
3551     $MUXER_LIST
3552     $PROTOCOL_LIST
3553 "
3554
3555 ALL_COMPONENTS="
3556     $AVCODEC_COMPONENTS_LIST
3557     $AVDEVICE_COMPONENTS_LIST
3558     $AVFILTER_COMPONENTS_LIST
3559     $AVFORMAT_COMPONENTS_LIST
3560 "
3561
3562 for n in $COMPONENT_LIST; do
3563     v=$(toupper ${n%s})_LIST
3564     eval enable \$$v
3565     eval ${n}_if_any="\$$v"
3566 done
3567
3568 enable $ARCH_EXT_LIST
3569
3570 die_unknown(){
3571     echo "Unknown option \"$1\"."
3572     echo "See $0 --help for available options."
3573     exit 1
3574 }
3575
3576 print_in_columns() {
3577     cols=$(expr $ncols / 24)
3578     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3579 }
3580
3581 show_list() {
3582     suffix=_$1
3583     shift
3584     echo $* | sed s/$suffix//g | print_in_columns
3585     exit 0
3586 }
3587
3588 rand_list(){
3589     IFS=', '
3590     set -- $*
3591     unset IFS
3592     for thing; do
3593         comp=${thing%:*}
3594         prob=${thing#$comp}
3595         prob=${prob#:}
3596         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3597         echo "prob ${prob:-0.5}"
3598         printf '%s\n' $comp
3599     done
3600 }
3601
3602 do_random(){
3603     action=$1
3604     shift
3605     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3606     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3607 }
3608
3609 for opt do
3610     optval="${opt#*=}"
3611     case "$opt" in
3612         --extra-ldflags=*)
3613             add_ldflags $optval
3614         ;;
3615         --extra-ldexeflags=*)
3616             add_ldexeflags $optval
3617         ;;
3618         --extra-ldsoflags=*)
3619             add_ldsoflags $optval
3620         ;;
3621         --extra-ldlibflags=*)
3622             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3623                  "removed in the future. Use --extra-ldsoflags instead."
3624             add_ldsoflags $optval
3625         ;;
3626         --extra-libs=*)
3627             add_extralibs $optval
3628         ;;
3629         --disable-devices)
3630             disable $INDEV_LIST $OUTDEV_LIST
3631         ;;
3632         --enable-debug=*)
3633             debuglevel="$optval"
3634         ;;
3635         --disable-programs)
3636             disable $PROGRAM_LIST
3637         ;;
3638         --disable-everything)
3639             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3640         ;;
3641         --disable-all)
3642             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3643             disable $LIBRARY_LIST $PROGRAM_LIST doc
3644             enable avutil
3645         ;;
3646         --enable-random|--disable-random)
3647             action=${opt%%-random}
3648             do_random ${action#--} $COMPONENT_LIST
3649         ;;
3650         --enable-random=*|--disable-random=*)
3651             action=${opt%%-random=*}
3652             do_random ${action#--} $optval
3653         ;;
3654         --enable-sdl)
3655             enable sdl2
3656         ;;
3657         --enable-*=*|--disable-*=*)
3658             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3659             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3660             eval list=\$$(toupper $thing)_LIST
3661             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3662             list=$(filter "$name" $list)
3663             [ "$list" = "" ] && warn "Option $opt did not match anything"
3664             $action $list
3665         ;;
3666         --enable-yasm|--disable-yasm)
3667             warn "The ${opt} option is only provided for compatibility and will be\n"\
3668                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3669             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3670         ;;
3671         --yasmexe=*)
3672             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3673                  "removed in the future. Use --x86asmexe instead."
3674             x86asmexe="$optval"
3675         ;;
3676         --enable-?*|--disable-?*)
3677             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3678             if is_in $option $COMPONENT_LIST; then
3679                 test $action = disable && action=unset
3680                 eval $action \$$(toupper ${option%s})_LIST
3681             elif is_in $option $CMDLINE_SELECT; then
3682                 $action $option
3683             else
3684                 die_unknown $opt
3685             fi
3686         ;;
3687         --list-*)
3688             NAME="${opt#--list-}"
3689             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3690             NAME=${NAME%s}
3691             eval show_list $NAME \$$(toupper $NAME)_LIST
3692         ;;
3693         --help|-h) show_help
3694         ;;
3695         --quiet|-q) quiet=yes
3696         ;;
3697         --fatal-warnings) enable fatal_warnings
3698         ;;
3699         --libfuzzer=*)
3700             libfuzzer_path="$optval"
3701         ;;
3702         *)
3703             optname="${opt%%=*}"
3704             optname="${optname#--}"
3705             optname=$(echo "$optname" | sed 's/-/_/g')
3706             if is_in $optname $CMDLINE_SET; then
3707                 eval $optname='$optval'
3708             elif is_in $optname $CMDLINE_APPEND; then
3709                 append $optname "$optval"
3710             else
3711                 die_unknown $opt
3712             fi
3713         ;;
3714     esac
3715 done
3716
3717 for e in $env; do
3718     eval "export $e"
3719 done
3720
3721 if disabled autodetect; then
3722
3723     # Unless iconv is explicitely disabled by the user, we still want to probe
3724     # for the iconv from the libc.
3725     disabled iconv || enable libc_iconv
3726
3727     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3728     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3729 fi
3730 # Mark specifically enabled, but normally autodetected libraries as requested.
3731 for lib in $AUTODETECT_LIBS; do
3732     enabled $lib && request $lib
3733 done
3734 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3735 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3736 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3737
3738 disabled logging && logfile=/dev/null
3739
3740 # we need to build at least one lib type
3741 if ! enabled_any static shared; then
3742     cat <<EOF
3743 At least one library type must be built.
3744 Specify --enable-static to build the static libraries or --enable-shared to
3745 build the shared libraries as well. To only build the shared libraries specify
3746 --disable-static in addition to --enable-shared.
3747 EOF
3748     exit 1
3749 fi
3750
3751 die_license_disabled() {
3752     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3753 }
3754
3755 die_license_disabled_gpl() {
3756     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3757 }
3758
3759 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3760 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3761
3762 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3763 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3764
3765 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3766
3767 enabled_all gnutls openssl &&
3768     die "GnuTLS and OpenSSL must not be enabled at the same time."
3769
3770 # Disable all the library-specific components if the library itself
3771 # is disabled, see AVCODEC_LIST and following _LIST variables.
3772
3773 disable_components(){
3774     disabled ${1} && disable $(
3775         eval components="\$$(toupper ${1})_COMPONENTS"
3776         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3777     )
3778 }
3779
3780 map 'disable_components $v' $LIBRARY_LIST
3781
3782 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3783 set >> $logfile
3784
3785 test -n "$valgrind" && toolchain="valgrind-memcheck"
3786
3787 enabled ossfuzz && {
3788     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3789     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3790 }
3791
3792 case "$toolchain" in
3793     *-asan)
3794         cc_default="${toolchain%-asan}"
3795         add_cflags  -fsanitize=address
3796         add_ldflags -fsanitize=address
3797     ;;
3798     *-msan)
3799         cc_default="${toolchain%-msan}"
3800         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3801         add_ldflags -fsanitize=memory
3802     ;;
3803     *-tsan)
3804         cc_default="${toolchain%-tsan}"
3805         add_cflags  -fsanitize=thread -fPIE
3806         add_ldflags -fsanitize=thread -pie
3807         case "$toolchain" in
3808             gcc-tsan)
3809                 add_cflags  -fPIC
3810                 add_ldflags -fPIC
3811                 ;;
3812         esac
3813     ;;
3814     *-usan)
3815         cc_default="${toolchain%-usan}"
3816         add_cflags  -fsanitize=undefined
3817         add_ldflags -fsanitize=undefined
3818     ;;
3819     valgrind-*)
3820         target_exec_default="valgrind"
3821         case "$toolchain" in
3822             valgrind-massif)
3823                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3824                 ;;
3825             valgrind-memcheck)
3826                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3827                 ;;
3828         esac
3829     ;;
3830     msvc)
3831         # Check whether the current MSVC version needs the C99 converter.
3832         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3833         # support enough of C99 to build ffmpeg. Default to the new
3834         # behaviour if the regexp was unable to match anything, since this
3835         # successfully parses the version number of existing supported
3836         # versions that require the converter (MSVC 2010 and 2012).
3837         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3838         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3839             cc_default="cl"
3840             cxx_default="cl"
3841         else
3842             cc_default="c99wrap cl"
3843             cxx_default="c99wrap cl"
3844         fi
3845         ld_default="$source_path/compat/windows/mslink"
3846         nm_default="dumpbin -symbols"
3847         ar_default="lib"
3848         case "$arch" in
3849         aarch64|arm64)
3850             as_default="armasm64"
3851             ;;
3852         arm*)
3853             as_default="armasm"
3854             ;;
3855         esac
3856         target_os_default="win32"
3857         # Use a relative path for TMPDIR. This makes sure all the
3858         # ffconf temp files are written with a relative path, avoiding
3859         # issues with msys/win32 path conversion for MSVC parameters
3860         # such as -Fo<file> or -out:<file>.
3861         TMPDIR=.
3862     ;;
3863     icl)
3864         cc_default="icl"
3865         ld_default="xilink"
3866         nm_default="dumpbin -symbols"
3867         ar_default="xilib"
3868         target_os_default="win32"
3869         TMPDIR=.
3870     ;;
3871     gcov)
3872         add_cflags  -fprofile-arcs -ftest-coverage
3873         add_ldflags -fprofile-arcs -ftest-coverage
3874     ;;
3875     llvm-cov)
3876         add_cflags -fprofile-arcs -ftest-coverage
3877         add_ldflags --coverage
3878     ;;
3879     hardened)
3880         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3881         add_cflags   -fno-strict-overflow -fstack-protector-all
3882         add_ldflags  -Wl,-z,relro -Wl,-z,now
3883         add_cflags   -fPIE
3884         add_ldexeflags -fPIE -pie
3885     ;;
3886     ?*)
3887         die "Unknown toolchain $toolchain"
3888     ;;
3889 esac
3890
3891 test -n "$cross_prefix" && enable cross_compile
3892
3893 if enabled cross_compile; then
3894     test -n "$arch" && test -n "$target_os" ||
3895         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3896 fi
3897
3898 ar_default="${cross_prefix}${ar_default}"
3899 cc_default="${cross_prefix}${cc_default}"
3900 cxx_default="${cross_prefix}${cxx_default}"
3901 nm_default="${cross_prefix}${nm_default}"
3902 pkg_config_default="${cross_prefix}${pkg_config_default}"
3903 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3904     ranlib_default="${cross_prefix}${ranlib_default} -D"
3905 else
3906     ranlib_default="${cross_prefix}${ranlib_default}"
3907 fi
3908 strip_default="${cross_prefix}${strip_default}"
3909 windres_default="${cross_prefix}${windres_default}"
3910
3911 sysinclude_default="${sysroot}/usr/include"
3912
3913 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3914     target_exec target_os x86asmexe nvcc
3915 enabled cross_compile || host_cc_default=$cc
3916 set_default host_cc
3917
3918 pkg_config_fail_message=""
3919 if ! $pkg_config --version >/dev/null 2>&1; then
3920     warn "$pkg_config not found, library detection may fail."
3921     pkg_config=false
3922 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3923     pkg_config_fail_message="
3924 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3925 fi
3926
3927 if test $doxygen != $doxygen_default && \
3928   ! $doxygen --version >/dev/null 2>&1; then
3929     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3930 fi
3931
3932 exesuf() {
3933     case $1 in
3934         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3935     esac
3936 }
3937
3938 EXESUF=$(exesuf $target_os)
3939 HOSTEXESUF=$(exesuf $host_os)
3940
3941 # set temporary file name
3942 : ${TMPDIR:=$TEMPDIR}
3943 : ${TMPDIR:=$TMP}
3944 : ${TMPDIR:=/tmp}
3945
3946 if [ -n "$tempprefix" ] ; then
3947     mktemp(){
3948         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3949         echo "$tmpname"
3950         mkdir "$tmpname"
3951     }
3952 elif ! check_cmd mktemp -u XXXXXX; then
3953     # simple replacement for missing mktemp
3954     # NOT SAFE FOR GENERAL USE
3955     mktemp(){
3956         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3957         echo "$tmpname"
3958         mkdir "$tmpname"
3959     }
3960 fi
3961
3962 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3963     die "Unable to create temporary directory in $TMPDIR."
3964
3965 tmpfile(){
3966     tmp="${FFTMPDIR}/test"$2
3967     (set -C; exec > $tmp) 2> /dev/null ||
3968         die "Unable to create temporary file in $FFTMPDIR."
3969     eval $1=$tmp
3970 }
3971
3972 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3973 trap 'exit 2' INT
3974
3975 tmpfile TMPASM .asm
3976 tmpfile TMPC   .c
3977 tmpfile TMPCPP .cpp
3978 tmpfile TMPE   $EXESUF
3979 tmpfile TMPH   .h
3980 tmpfile TMPM   .m
3981 tmpfile TMPO   .o
3982 tmpfile TMPS   .S
3983 tmpfile TMPSH  .sh
3984 tmpfile TMPV   .ver
3985
3986 unset -f mktemp
3987
3988 chmod +x $TMPE
3989
3990 # make sure we can execute files in $TMPDIR
3991 cat > $TMPSH 2>> $logfile <<EOF
3992 #! /bin/sh
3993 EOF
3994 chmod +x $TMPSH >> $logfile 2>&1
3995 if ! $TMPSH >> $logfile 2>&1; then
3996     cat <<EOF
3997 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3998 variable to another directory and make sure that it is not mounted noexec.
3999 EOF
4000     die "Sanity test failed."
4001 fi
4002
4003 armasm_flags(){
4004     for flag; do
4005         case $flag in
4006             # Filter out MSVC cl.exe options from cflags that shouldn't
4007             # be passed to gas-preprocessor
4008             -M[TD]*)                                            ;;
4009             *)                  echo $flag                      ;;
4010         esac
4011    done
4012 }
4013
4014 cparser_flags(){
4015     for flag; do
4016         case $flag in
4017             -Wno-switch)             echo -Wno-switch-enum ;;
4018             -Wno-format-zero-length) ;;
4019             -Wdisabled-optimization) ;;
4020             -Wno-pointer-sign)       echo -Wno-other ;;
4021             *)                       echo $flag ;;
4022         esac
4023     done
4024 }
4025
4026 msvc_common_flags(){
4027     for flag; do
4028         case $flag in
4029             # In addition to specifying certain flags under the compiler
4030             # specific filters, they must be specified here as well or else the
4031             # generic catch all at the bottom will print the original flag.
4032             -Wall)                ;;
4033             -Wextra)              ;;
4034             -std=c99)             ;;
4035             # Common flags
4036             -fomit-frame-pointer) ;;
4037             -g)                   echo -Z7 ;;
4038             -fno-math-errno)      ;;
4039             -fno-common)          ;;
4040             -fno-signed-zeros)    ;;
4041             -fPIC)                ;;
4042             -mthumb)              ;;
4043             -march=*)             ;;
4044             -lz)                  echo zlib.lib ;;
4045             -lx264)               echo libx264.lib ;;
4046             -lstdc++)             ;;
4047             -l*)                  echo ${flag#-l}.lib ;;
4048             -LARGEADDRESSAWARE)   echo $flag ;;
4049             -L*)                  echo -libpath:${flag#-L} ;;
4050             *)                    echo $flag ;;
4051         esac
4052     done
4053 }
4054
4055 msvc_flags(){
4056     msvc_common_flags "$@"
4057     for flag; do
4058         case $flag in
4059             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4060                                        -wd4554 ;;
4061             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4062                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4063                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4064                                        -wd4307 \
4065                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4066         esac
4067     done
4068 }
4069
4070 icl_flags(){
4071     msvc_common_flags "$@"
4072     for flag; do
4073         case $flag in
4074             # Despite what Intel's documentation says -Wall, which is supported
4075             # on Windows, does enable remarks so disable them here.
4076             -Wall)                echo $flag -Qdiag-disable:remark ;;
4077             -std=c99)             echo -Qstd=c99 ;;
4078             -flto)                echo -ipo ;;
4079         esac
4080     done
4081 }
4082
4083 icc_flags(){
4084     for flag; do
4085         case $flag in
4086             -flto)                echo -ipo ;;
4087             *)                    echo $flag ;;
4088         esac
4089     done
4090 }
4091
4092 suncc_flags(){
4093     for flag; do
4094         case $flag in
4095             -march=*|-mcpu=*)
4096                 case "${flag#*=}" in
4097                     native)                   echo -xtarget=native       ;;
4098                     v9|niagara)               echo -xarch=sparc          ;;
4099                     ultrasparc)               echo -xarch=sparcvis       ;;
4100                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4101                     i586|pentium)             echo -xchip=pentium        ;;
4102                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4103                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4104                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4105                     pentium4*)          echo -xtarget=pentium4           ;;
4106                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4107                     *-sse3)             echo -xarch=sse3                 ;;
4108                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4109                     bonnell)                   echo -xarch=ssse3         ;;
4110                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4111                     westmere)                  echo -xtarget=westmere    ;;
4112                     silvermont)                echo -xarch=sse4_2        ;;
4113                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4114                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4115                                                echo -xarch=avx           ;;
4116                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4117                     btver1)                    echo -xarch=amdsse4a      ;;
4118                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4119                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4120                     k8|opteron|athlon64|athlon-fx)
4121                                                echo -xarch=sse2a         ;;
4122                     athlon*)                   echo -xarch=pentium_proa  ;;
4123                 esac
4124                 ;;
4125             -std=c99)             echo -xc99              ;;
4126             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4127             -fPIC)                echo -KPIC -xcode=pic32 ;;
4128             -W*,*)                echo $flag              ;;
4129             -f*-*|-W*|-mimpure-text)                      ;;
4130             -shared)              echo -G                 ;;
4131             *)                    echo $flag              ;;
4132         esac
4133     done
4134 }
4135
4136 probe_cc(){
4137     pfx=$1
4138     _cc=$2
4139     first=$3
4140
4141     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4142     unset _ld_o _ldflags _ld_lib _ld_path
4143     unset _depflags _DEPCMD _DEPFLAGS
4144     _flags_filter=echo
4145
4146     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4147         true # no-op to avoid reading stdin in following checks
4148     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4149         _type=llvm_gcc
4150         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4151         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4152         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4153         _cflags_speed='-O3'
4154         _cflags_size='-Os'
4155     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4156         _type=gcc
4157         gcc_version=$($_cc --version | head -n1)
4158         gcc_basever=$($_cc -dumpversion)
4159         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4160         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4161         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4162         case $gcc_basever in
4163             2) ;;
4164             2.*) ;;
4165             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4166         esac
4167         if [ "$first" = true ]; then
4168             case $gcc_basever in
4169                 4.2*)
4170                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4171             esac
4172         fi
4173         _cflags_speed='-O3'
4174         _cflags_size='-Os'
4175     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4176         _type=icc
4177         _ident=$($_cc --version | head -n1)
4178         _depflags='-MMD'
4179         _cflags_speed='-O3'
4180         _cflags_size='-Os'
4181         _cflags_noopt='-O1'
4182         _flags_filter=icc_flags
4183     elif $_cc -v 2>&1 | grep -q xlc; then
4184         _type=xlc
4185         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4186         _cflags_speed='-O5'
4187         _cflags_size='-O5 -qcompact'
4188     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4189         test -d "$sysroot" || die "No valid sysroot specified."
4190         _type=armcc
4191         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4192         armcc_conf="$PWD/armcc.conf"
4193         $_cc --arm_linux_configure                 \
4194              --arm_linux_config_file="$armcc_conf" \
4195              --configure_sysroot="$sysroot"        \
4196              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4197              die "Error creating armcc configuration file."
4198         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4199         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4200         as_default="${cross_prefix}gcc"
4201         _depflags='-MMD'
4202         _cflags_speed='-O3'
4203         _cflags_size='-Os'
4204     elif $_cc -v 2>&1 | grep -q clang; then
4205         _type=clang
4206         _ident=$($_cc --version 2>/dev/null | head -n1)
4207         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4208         _cflags_speed='-O3'
4209         _cflags_size='-Oz'
4210     elif $_cc -V 2>&1 | grep -q Sun; then
4211         _type=suncc
4212         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4213         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4214         _DEPFLAGS='-xM1 -xc99'
4215         _ldflags='-std=c99'
4216         _cflags_speed='-O5'
4217         _cflags_size='-O5 -xspace'
4218         _flags_filter=suncc_flags
4219     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4220         _type=pathscale
4221         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4222         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4223         _cflags_speed='-O2'
4224         _cflags_size='-Os'
4225         _flags_filter='filter_out -Wdisabled-optimization'
4226     elif $_cc -v 2>&1 | grep -q Open64; then
4227         _type=open64
4228         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4229         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4230         _cflags_speed='-O2'
4231         _cflags_size='-Os'
4232         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4233     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4234         _type=armasm
4235         _ident=$($_cc | head -n1)
4236         # 4509: "This form of conditional instruction is deprecated"
4237         _flags="-nologo -ignore 4509"
4238         _flags_filter=armasm_flags
4239     elif $_cc 2>&1 | grep -q Intel; then
4240         _type=icl
4241         _ident=$($_cc 2>&1 | head -n1)
4242         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4243         # Not only is O3 broken on 13.x+ but it is slower on all previous
4244         # versions (tested) as well.
4245         _cflags_speed="-O2"
4246         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4247         if $_cc 2>&1 | grep -q Linker; then
4248             _ld_o='-out:$@'
4249         else
4250             _ld_o='-Fe$@'
4251         fi
4252         _cc_o='-Fo$@'
4253         _cc_e='-P'
4254         _flags_filter=icl_flags
4255         _ld_lib='lib%.a'
4256         _ld_path='-libpath:'
4257         # -Qdiag-error to make icl error when seeing certain unknown arguments
4258         _flags='-nologo -Qdiag-error:4044,10157'
4259         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4260         # with MSVC which enables it by default.
4261         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4262         disable stripping
4263     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4264         # lld can emulate multiple different linkers; in ms link.exe mode,
4265         # the -? parameter gives the help output which contains an identifyable
4266         # string, while it gives an error in other modes.
4267         _type=lld-link
4268         # The link.exe mode doesn't have a switch for getting the version,
4269         # but we can force it back to gnu mode and get the version from there.
4270         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4271         _ld_o='-out:$@'
4272         _flags_filter=msvc_flags
4273         _ld_lib='lib%.a'
4274         _ld_path='-libpath:'
4275     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4276         _type=msvc
4277         _ident=$($_cc 2>&1 | head -n1)
4278         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4279         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4280         _cflags_speed="-O2"
4281         _cflags_size="-O1"
4282         _cflags_noopt="-O1"
4283         if $_cc -nologo- 2>&1 | grep -q Linker; then
4284             _ld_o='-out:$@'
4285         else
4286             _ld_o='-Fe$@'
4287         fi
4288         _cc_o='-Fo$@'
4289         _cc_e='-P -Fi$@'
4290         _flags_filter=msvc_flags
4291         _ld_lib='lib%.a'
4292         _ld_path='-libpath:'
4293         _flags='-nologo'
4294         disable stripping
4295     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4296         _type=cparser
4297         _ident=$($_cc --version | head -n1)
4298         _depflags='-MMD'
4299         _cflags_speed='-O4'
4300         _cflags_size='-O2'
4301         _flags_filter=cparser_flags
4302     fi
4303
4304     eval ${pfx}_type=\$_type
4305     eval ${pfx}_ident=\$_ident
4306 }
4307
4308 set_ccvars(){
4309     eval ${1}_C=\${_cc_c-\${${1}_C}}
4310     eval ${1}_E=\${_cc_e-\${${1}_E}}
4311     eval ${1}_O=\${_cc_o-\${${1}_O}}
4312
4313     if [ -n "$_depflags" ]; then
4314         eval ${1}_DEPFLAGS=\$_depflags
4315     else
4316         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4317         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4318         eval DEP${1}FLAGS=\$_flags
4319     fi
4320 }
4321
4322 probe_cc cc "$cc" "true"
4323 cflags_filter=$_flags_filter
4324 cflags_speed=$_cflags_speed
4325 cflags_size=$_cflags_size
4326 cflags_noopt=$_cflags_noopt
4327 add_cflags $_flags $_cflags
4328 cc_ldflags=$_ldflags
4329 set_ccvars CC
4330 set_ccvars CXX
4331
4332 probe_cc hostcc "$host_cc"
4333 host_cflags_filter=$_flags_filter
4334 host_cflags_speed=$_cflags_speed
4335 add_host_cflags  $_flags $_cflags
4336 set_ccvars HOSTCC
4337
4338 test -n "$cc_type" && enable $cc_type ||
4339     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4340
4341 : ${as_default:=$cc}
4342 : ${objcc_default:=$cc}
4343 : ${dep_cc_default:=$cc}
4344 : ${ld_default:=$cc}
4345 : ${host_ld_default:=$host_cc}
4346 set_default ar as objcc dep_cc ld ln_s host_ld windres
4347
4348 probe_cc as "$as"
4349 asflags_filter=$_flags_filter
4350 add_asflags $_flags $_cflags
4351 set_ccvars AS
4352
4353 probe_cc objcc "$objcc"
4354 objcflags_filter=$_flags_filter
4355 add_objcflags $_flags $_cflags
4356 set_ccvars OBJC
4357
4358 probe_cc ld "$ld"
4359 ldflags_filter=$_flags_filter
4360 add_ldflags $_flags $_ldflags
4361 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4362 LD_O=${_ld_o-$LD_O}
4363 LD_LIB=${_ld_lib-$LD_LIB}
4364 LD_PATH=${_ld_path-$LD_PATH}
4365
4366 probe_cc hostld "$host_ld"
4367 host_ldflags_filter=$_flags_filter
4368 add_host_ldflags $_flags $_ldflags
4369 HOSTLD_O=${_ld_o-$HOSTLD_O}
4370
4371 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4372     probe_cc depcc "$dep_cc"
4373     CCDEP=${_DEPCMD:-$DEPCMD}
4374     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4375     DEPCCFLAGS=$_flags
4376 fi
4377
4378 if $ar 2>&1 | grep -q Microsoft; then
4379     arflags="-nologo"
4380     ar_o='-out:$@'
4381 elif $ar 2>&1 | grep -q "\[D\] "; then
4382     arflags="rcD"
4383     ar_o='$@'
4384 else
4385     arflags="rc"
4386     ar_o='$@'
4387 fi
4388
4389 add_cflags $extra_cflags
4390 add_cxxflags $extra_cxxflags
4391 add_objcflags $extra_objcflags
4392 add_asflags $extra_cflags
4393
4394 if test -n "$sysroot"; then
4395     case "$cc_type" in
4396         gcc|llvm_gcc|clang)
4397             add_cppflags --sysroot="$sysroot"
4398             add_ldflags --sysroot="$sysroot"
4399         ;;
4400     esac
4401 fi
4402
4403 if test "$cpu" = host; then
4404     enabled cross_compile &&
4405         die "--cpu=host makes no sense when cross-compiling."
4406
4407     case "$cc_type" in
4408         gcc|llvm_gcc)
4409             check_native(){
4410                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4411                 sed -n "/cc1.*$1=/{
4412                             s/.*$1=\\([^ ]*\\).*/\\1/
4413                             p
4414                             q
4415                         }" $TMPE
4416             }
4417             cpu=$(check_native -march || check_native -mcpu)
4418         ;;
4419         clang)
4420             check_native(){
4421                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4422                 sed -n "/cc1.*-target-cpu /{
4423                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4424                             p
4425                             q
4426                         }" $TMPE
4427             }
4428             cpu=$(check_native -march)
4429         ;;
4430     esac
4431
4432     test "${cpu:-host}" = host &&
4433         die "--cpu=host not supported with compiler $cc"
4434 fi
4435
4436 # Deal with common $arch aliases
4437 case "$arch" in
4438     aarch64|arm64)
4439         arch="aarch64"
4440     ;;
4441     arm*|iPad*|iPhone*)
4442         arch="arm"
4443     ;;
4444     mips*|IP*)
4445         case "$arch" in
4446         *el)
4447             add_cppflags -EL
4448             add_ldflags -EL
4449         ;;
4450         *eb)
4451             add_cppflags -EB
4452             add_ldflags -EB
4453         ;;
4454         esac
4455         arch="mips"
4456     ;;
4457     parisc*|hppa*)
4458         arch="parisc"
4459     ;;
4460     "Power Macintosh"|ppc*|powerpc*)
4461         arch="ppc"
4462     ;;
4463     s390|s390x)
4464         arch="s390"
4465     ;;
4466     sh4|sh)
4467         arch="sh4"
4468     ;;
4469     sun4*|sparc*)
4470         arch="sparc"
4471     ;;
4472     tilegx|tile-gx)
4473         arch="tilegx"
4474     ;;
4475     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4476         arch="x86"
4477     ;;
4478 esac
4479
4480 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4481 enable $arch
4482
4483 # Add processor-specific flags
4484 if enabled aarch64; then
4485
4486     case $cpu in
4487         armv*)
4488             cpuflags="-march=$cpu"
4489         ;;
4490         *)
4491             cpuflags="-mcpu=$cpu"
4492         ;;
4493     esac
4494
4495 elif enabled alpha; then
4496
4497     cpuflags="-mcpu=$cpu"
4498
4499 elif enabled arm; then
4500
4501     check_arm_arch() {
4502         check_cpp_condition stddef.h \
4503             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4504             $cpuflags
4505     }
4506
4507     probe_arm_arch() {
4508         if   check_arm_arch 4;        then echo armv4
4509         elif check_arm_arch 4T;       then echo armv4t
4510         elif check_arm_arch 5;        then echo armv5
4511         elif check_arm_arch 5E;       then echo armv5e
4512         elif check_arm_arch 5T;       then echo armv5t
4513         elif check_arm_arch 5TE;      then echo armv5te
4514         elif check_arm_arch 5TEJ;     then echo armv5te
4515         elif check_arm_arch 6;        then echo armv6
4516         elif check_arm_arch 6J;       then echo armv6j
4517         elif check_arm_arch 6K;       then echo armv6k
4518         elif check_arm_arch 6Z;       then echo armv6z
4519         elif check_arm_arch 6ZK;      then echo armv6zk
4520         elif check_arm_arch 6T2;      then echo armv6t2
4521         elif check_arm_arch 7;        then echo armv7
4522         elif check_arm_arch 7A  7_A;  then echo armv7-a
4523         elif check_arm_arch 7S;       then echo armv7-a
4524         elif check_arm_arch 7R  7_R;  then echo armv7-r
4525         elif check_arm_arch 7M  7_M;  then echo armv7-m
4526         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4527         elif check_arm_arch 8A  8_A;  then echo armv8-a
4528         fi
4529     }
4530
4531     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4532
4533     case $cpu in
4534         armv*)
4535             cpuflags="-march=$cpu"
4536             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4537         ;;
4538         *)
4539             cpuflags="-mcpu=$cpu"
4540             case $cpu in
4541                 cortex-a*)                               subarch=armv7a  ;;
4542                 cortex-r*)                               subarch=armv7r  ;;
4543                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4544                 arm11*)                                  subarch=armv6   ;;
4545                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4546                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4547                 *)                             subarch=$(probe_arm_arch) ;;
4548             esac
4549         ;;
4550     esac
4551
4552     case "$subarch" in
4553         armv5t*)    enable fast_clz                ;;
4554         armv[6-8]*)
4555             enable fast_clz
4556             disabled fast_unaligned || enable fast_unaligned
4557             ;;
4558     esac
4559
4560 elif enabled avr32; then
4561
4562     case $cpu in
4563         ap7[02]0[0-2])
4564             subarch="avr32_ap"
4565             cpuflags="-mpart=$cpu"
4566         ;;
4567         ap)
4568             subarch="avr32_ap"
4569             cpuflags="-march=$cpu"
4570         ;;
4571         uc3[ab]*)
4572             subarch="avr32_uc"
4573             cpuflags="-mcpu=$cpu"
4574         ;;
4575         uc)
4576             subarch="avr32_uc"
4577             cpuflags="-march=$cpu"
4578         ;;
4579     esac
4580
4581 elif enabled bfin; then
4582
4583     cpuflags="-mcpu=$cpu"
4584
4585 elif enabled mips; then
4586
4587     cpuflags="-march=$cpu"
4588
4589     if [ "$cpu" != "generic" ]; then
4590         disable mips32r2
4591         disable mips32r5
4592         disable mips64r2
4593         disable mips32r6
4594         disable mips64r6
4595         disable loongson2
4596         disable loongson3
4597
4598         case $cpu in
4599             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4600                 enable mips32r2
4601                 disable msa
4602             ;;
4603             p5600|i6400|p6600)
4604                 disable mipsdsp
4605                 disable mipsdspr2
4606             ;;
4607             loongson*)
4608                 enable loongson2
4609                 enable loongson3
4610                 enable local_aligned
4611                 enable simd_align_16
4612                 enable fast_64bit
4613                 enable fast_clz
4614                 enable fast_cmov
4615                 enable fast_unaligned
4616                 disable aligned_stack
4617                 disable mipsfpu
4618                 disable mipsdsp
4619                 disable mipsdspr2
4620                 case $cpu in
4621                     loongson3*)
4622                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4623                     ;;
4624                     loongson2e)
4625                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4626                     ;;
4627                     loongson2f)
4628                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4629                     ;;
4630                 esac
4631             ;;
4632             *)
4633                 # Unknown CPU. Disable everything.
4634                 warn "unknown CPU. Disabling all MIPS optimizations."
4635                 disable mipsfpu
4636                 disable mipsdsp
4637                 disable mipsdspr2
4638                 disable msa
4639                 disable mmi
4640             ;;
4641         esac
4642
4643         case $cpu in
4644             24kc)
4645                 disable mipsfpu
4646                 disable mipsdsp
4647                 disable mipsdspr2
4648             ;;
4649             24kf*)
4650                 disable mipsdsp
4651                 disable mipsdspr2
4652             ;;
4653             24kec|34kc|1004kc)
4654                 disable mipsfpu
4655                 disable mipsdspr2
4656             ;;
4657             24kef*|34kf*|1004kf*)
4658                 disable mipsdspr2
4659             ;;
4660             74kc)
4661                 disable mipsfpu
4662             ;;
4663             p5600)
4664                 enable mips32r5
4665                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4666             ;;
4667             i6400)
4668                 enable mips64r6
4669                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4670             ;;
4671             p6600)
4672                 enable mips64r6
4673                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4674             ;;
4675         esac
4676     else
4677         # We do not disable anything. Is up to the user to disable the unwanted features.
4678         warn 'generic cpu selected'
4679     fi
4680
4681 elif enabled ppc; then
4682
4683     disable ldbrx
4684
4685     case $(tolower $cpu) in
4686         601|ppc601|powerpc601)
4687             cpuflags="-mcpu=601"
4688             disable altivec
4689         ;;
4690         603*|ppc603*|powerpc603*)
4691             cpuflags="-mcpu=603"
4692             disable altivec
4693         ;;
4694         604*|ppc604*|powerpc604*)
4695             cpuflags="-mcpu=604"
4696             disable altivec
4697         ;;
4698         g3|75*|ppc75*|powerpc75*)
4699             cpuflags="-mcpu=750"
4700             disable altivec
4701         ;;
4702         g4|745*|ppc745*|powerpc745*)
4703             cpuflags="-mcpu=7450"
4704             disable vsx
4705         ;;
4706         74*|ppc74*|powerpc74*)
4707             cpuflags="-mcpu=7400"
4708             disable vsx
4709         ;;
4710         g5|970|ppc970|powerpc970)
4711             cpuflags="-mcpu=970"
4712             disable vsx
4713         ;;
4714         power[3-6]*)
4715             cpuflags="-mcpu=$cpu"
4716             disable vsx
4717         ;;
4718         power[7-8]*)
4719             cpuflags="-mcpu=$cpu"
4720         ;;
4721         cell)
4722             cpuflags="-mcpu=cell"
4723             enable ldbrx
4724             disable vsx
4725         ;;
4726         e500mc)
4727             cpuflags="-mcpu=e500mc"
4728             disable altivec
4729         ;;
4730         e500v2)
4731             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4732             disable altivec
4733             disable dcbzl
4734         ;;
4735         e500)
4736             cpuflags="-mcpu=8540 -mhard-float"
4737             disable altivec
4738             disable dcbzl
4739         ;;
4740     esac
4741
4742 elif enabled sparc; then
4743
4744     case $cpu in
4745         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4746             cpuflags="-mcpu=$cpu"
4747         ;;
4748         ultrasparc*|niagara[234])
4749             cpuflags="-mcpu=$cpu"
4750         ;;
4751     esac
4752
4753 elif enabled x86; then
4754
4755     case $cpu in
4756         i[345]86|pentium)
4757             cpuflags="-march=$cpu"
4758             disable i686
4759             disable mmx
4760         ;;
4761         # targets that do NOT support nopl and conditional mov (cmov)
4762         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4763             cpuflags="-march=$cpu"
4764             disable i686
4765         ;;
4766         # targets that do support nopl and conditional mov (cmov)
4767         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4768         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4769         |amdfam10|barcelona|b[dt]ver*|znver*)
4770             cpuflags="-march=$cpu"
4771             enable i686
4772             enable fast_cmov
4773         ;;
4774         # targets that do support conditional mov but on which it's slow
4775         pentium4|pentium4m|prescott|nocona)
4776             cpuflags="-march=$cpu"
4777             enable i686
4778             disable fast_cmov
4779         ;;
4780     esac
4781
4782 fi
4783
4784 if [ "$cpu" != generic ]; then
4785     add_cflags  $cpuflags
4786     add_asflags $cpuflags
4787     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4788 fi
4789
4790 # compiler sanity check
4791 check_exec <<EOF
4792 int main(void){ return 0; }
4793 EOF
4794 if test "$?" != 0; then
4795     echo "$cc is unable to create an executable file."
4796     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4797         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4798         echo "Only do this if you know what cross compiling means."
4799     fi
4800     die "C compiler test failed."
4801 fi
4802
4803 add_cppflags -D_ISOC99_SOURCE
4804 add_cxxflags -D__STDC_CONSTANT_MACROS
4805 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4806
4807 # some compilers silently accept -std=c11, so we also need to check that the
4808 # version macro is defined properly
4809 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4810     add_cflags -std=c11 ||
4811     check_cflags -std=c99
4812
4813 check_cppflags -D_FILE_OFFSET_BITS=64
4814 check_cppflags -D_LARGEFILE_SOURCE
4815
4816 add_host_cppflags -D_ISOC99_SOURCE
4817 check_host_cflags -std=c99
4818 check_host_cflags -Wall
4819 check_host_cflags $host_cflags_speed
4820
4821 check_64bit(){
4822     arch32=$1
4823     arch64=$2
4824     expr=$3
4825     check_code cc "" "int test[2*($expr) - 1]" &&
4826         subarch=$arch64 || subarch=$arch32
4827 }
4828
4829 case "$arch" in
4830     aarch64|alpha|ia64)
4831         spic=$shared
4832     ;;
4833     mips)
4834         check_64bit mips mips64 '_MIPS_SIM > 1'
4835         spic=$shared
4836     ;;
4837     parisc)
4838         check_64bit parisc parisc64 'sizeof(void *) > 4'
4839         spic=$shared
4840     ;;
4841     ppc)
4842         check_64bit ppc ppc64 'sizeof(void *) > 4'
4843         spic=$shared
4844     ;;
4845     s390)
4846         check_64bit s390 s390x 'sizeof(void *) > 4'
4847         spic=$shared
4848     ;;
4849     sparc)
4850         check_64bit sparc sparc64 'sizeof(void *) > 4'
4851         spic=$shared
4852     ;;
4853     x86)
4854         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4855         # Treat x32 as x64 for now. Note it also needs spic=$shared
4856         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4857             subarch=x86_64
4858         if test "$subarch" = "x86_64"; then
4859             spic=$shared
4860         fi
4861     ;;
4862     ppc)
4863         check_cc <<EOF && subarch="ppc64"
4864         int test[(int)sizeof(char*) - 7];
4865 EOF
4866     ;;
4867 esac
4868
4869 enable $subarch
4870 enabled spic && enable_weak pic
4871
4872 enabled x86_64 && objformat=elf64 || objformat="elf32"
4873
4874 # OS specific
4875 case $target_os in
4876     aix)
4877         SHFLAGS=-shared
4878         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4879         enabled shared && add_ldflags -Wl,-brtl
4880         arflags='-Xany -r -c'
4881         ;;
4882     android)
4883         disable symver
4884         enable section_data_rel_ro
4885         SLIB_INSTALL_NAME='$(SLIBNAME)'
4886         SLIB_INSTALL_LINKS=
4887         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4888         ;;
4889     haiku)
4890         prefix_default="/boot/common"
4891         network_extralibs="-lnetwork"
4892         host_extralibs=
4893         ;;
4894     sunos)
4895         SHFLAGS='-shared -Wl,-h,$$(@F)'
4896         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4897         network_extralibs="-lsocket -lnsl"
4898         add_cppflags -D__EXTENSIONS__
4899         # When using suncc to build, the Solaris linker will mark
4900         # an executable with each instruction set encountered by
4901         # the Solaris assembler.  As our libraries contain their own
4902         # guards for processor-specific code, instead suppress
4903         # generation of the HWCAPS ELF section on Solaris x86 only.
4904         enabled_all suncc x86 &&
4905             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4906             add_ldflags -Wl,-M,mapfile
4907         nm_default='nm -P -g'
4908         version_script='-M'
4909         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4910         ;;
4911     netbsd)
4912         disable symver
4913         oss_indev_extralibs="-lossaudio"
4914         oss_outdev_extralibs="-lossaudio"
4915         enabled gcc || check_ldflags -Wl,-zmuldefs
4916         ;;
4917     openbsd|bitrig)
4918         disable symver
4919         SHFLAGS='-shared'
4920         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4921         SLIB_INSTALL_LINKS=
4922         oss_indev_extralibs="-lossaudio"
4923         oss_outdev_extralibs="-lossaudio"
4924         ;;
4925     dragonfly)
4926         disable symver
4927         ;;
4928     freebsd)
4929         ;;
4930     bsd/os)
4931         add_extralibs -lpoll -lgnugetopt
4932         strip="strip -d"
4933         ;;
4934     darwin)
4935         enabled ppc && add_asflags -force_cpusubtype_ALL
4936         install_name_dir_default='$(SHLIBDIR)'
4937         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4938         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4939         strip="${strip} -x"
4940         add_ldflags -Wl,-dynamic,-search_paths_first
4941         check_cflags -Werror=partial-availability
4942         SLIBSUF=".dylib"
4943         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4944         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4945         enabled x86_64 && objformat="macho64" || objformat="macho32"
4946         enabled_any pic shared x86_64 ||
4947             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4948         check_header dispatch/dispatch.h &&
4949             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4950         if test -n "$sysroot"; then
4951             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4952             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4953         fi
4954         version_script='-exported_symbols_list'
4955         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4956         ;;
4957     msys*)
4958         die "Native MSYS builds are discouraged, please use the MINGW environment."
4959         ;;
4960     mingw32*|mingw64*)
4961         target_os=mingw32
4962         if enabled shared; then
4963             # Cannot build both shared and static libs when using dllexport.
4964             disable static
4965         fi
4966         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4967         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4968         shlibdir_default="$bindir_default"
4969         SLIBPREF=""
4970         SLIBSUF=".dll"
4971         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4972         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4973         SLIB_EXTRA_CMD='cp $(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4974         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4975         SLIB_INSTALL_LINKS=
4976         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4977         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4978         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4979         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4980         enabled x86_64 && objformat="win64" || objformat="win32"
4981         ranlib=:
4982         enable dos_paths
4983         check_ldflags -Wl,--nxcompat,--dynamicbase
4984         # Lets work around some stupidity in binutils.
4985         # ld will strip relocations from executables even though we need them
4986         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4987         # however ld then forgets what the entry point should be (oops) so we
4988         # have to manually (re)set it.
4989         if enabled x86_32; then
4990             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4991         elif enabled x86_64; then
4992             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4993             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4994             # Set image base >4GB for extra entropy with HEASLR
4995             add_ldexeflags -Wl,--image-base,0x140000000
4996             append SHFLAGS -Wl,--image-base,0x180000000
4997         fi
4998         ;;
4999     win32|win64)
5000         disable symver
5001         if enabled shared; then
5002             # Link to the import library instead of the normal static library
5003             # for shared libs.
5004             LD_LIB='%.lib'
5005             # Cannot build both shared and static libs with MSVC or icl.
5006             disable static
5007         fi
5008         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5009         shlibdir_default="$bindir_default"
5010         SLIBPREF=""
5011         SLIBSUF=".dll"
5012         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5013         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5014         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5015         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5016         SLIB_INSTALL_LINKS=
5017         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5018         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5019         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5020         enabled x86_64 && objformat="win64" || objformat="win32"
5021         ranlib=:
5022         enable dos_paths
5023         ;;
5024     cygwin*)
5025         target_os=cygwin
5026         shlibdir_default="$bindir_default"
5027         SLIBPREF="cyg"
5028         SLIBSUF=".dll"
5029         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5030         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5031         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5032         SLIB_INSTALL_LINKS=
5033         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5034         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5035         enabled x86_64 && objformat="win64" || objformat="win32"
5036         enable dos_paths
5037         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5038         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5039         ;;
5040     *-dos|freedos|opendos)
5041         network_extralibs="-lsocket"
5042         objformat="coff"
5043         enable dos_paths
5044         add_cppflags -U__STRICT_ANSI__
5045         ;;
5046     linux)
5047         enable section_data_rel_ro
5048         enabled_any arm aarch64 && enable_weak linux_perf
5049         ;;
5050     irix*)
5051         target_os=irix
5052         ranlib="echo ignoring ranlib"
5053         ;;
5054     os/2*)
5055         strip="lxlite -CS"
5056         striptype=""
5057         objformat="aout"
5058         add_cppflags -D_GNU_SOURCE
5059         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5060         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5061         LIBSUF="_s.a"
5062         SLIBPREF=""
5063         SLIBSUF=".dll"
5064         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5065         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5066         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5067             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5068             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5069             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5070             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5071         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5072             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5073         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5074         SLIB_INSTALL_LINKS=
5075         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5076         enable dos_paths
5077         enable_weak os2threads
5078         ;;
5079     gnu/kfreebsd)
5080         add_cppflags -D_BSD_SOURCE
5081         ;;
5082     gnu)
5083         ;;
5084     qnx)
5085         add_cppflags -D_QNX_SOURCE
5086         network_extralibs="-lsocket"
5087         ;;
5088     symbian)
5089         SLIBSUF=".dll"
5090         enable dos_paths
5091         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5092         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5093         add_ldflags -Wl,--target1-abs,--no-undefined \
5094                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5095                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5096         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5097                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5098                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5099         ;;
5100     minix)
5101         ;;
5102     none)
5103         ;;
5104     *)
5105         die "Unknown OS '$target_os'."
5106         ;;
5107 esac
5108
5109 # test if creating links works
5110 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5111 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5112 mkdir "$link_dest"
5113 $ln_s "$link_dest" "$link_name"
5114 touch "$link_dest/test_file"
5115 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5116     # create link to source path
5117     [ -e src ] && rm src
5118     $ln_s "$source_path" src
5119     source_link=src
5120 else
5121     # creating directory links doesn't work
5122     # fall back to using the full source path
5123     source_link="$source_path"
5124 fi
5125 # cleanup
5126 rm -r "$link_dest"
5127 rm -r "$link_name"
5128
5129 # determine libc flavour
5130
5131 probe_libc(){
5132     pfx=$1
5133     pfx_no_=${pfx%_}
5134     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5135     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5136         eval ${pfx}libc_type=uclibc
5137         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5138     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5139         eval ${pfx}libc_type=glibc
5140         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5141     # MinGW headers can be installed on Cygwin, so check for newlib first.
5142     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5143         eval ${pfx}libc_type=newlib
5144         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5145     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5146     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5147         eval ${pfx}libc_type=mingw64
5148         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5149             add_compat msvcrt/snprintf.o
5150             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5151         fi
5152         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5153         eval test \$${pfx_no_}cc_type = "gcc" &&
5154             add_${pfx}cppflags -D__printf__=__gnu_printf__
5155     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5156          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5157         eval ${pfx}libc_type=mingw32
5158         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5159             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5160             die "ERROR: MinGW32 runtime version must be >= 3.15."
5161         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5162         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5163             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5164         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5165             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5166         eval test \$${pfx_no_}cc_type = "gcc" &&
5167             add_${pfx}cppflags -D__printf__=__gnu_printf__
5168     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5169         eval ${pfx}libc_type=msvcrt
5170         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5171             if [ "$pfx" = host_ ]; then
5172                 add_host_cppflags -Dsnprintf=_snprintf
5173             else
5174                 add_compat strtod.o strtod=avpriv_strtod
5175                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5176                                              _snprintf=avpriv_snprintf  \
5177                                              vsnprintf=avpriv_vsnprintf
5178             fi
5179         fi
5180         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5181         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5182         # 0x601 by default unless something else is set by the user.
5183         # This can easily lead to us detecting functions only present
5184         # in such new versions and producing binaries requiring windows 7.0.
5185         # Therefore explicitly set the default to XP unless the user has
5186         # set something else on the command line.
5187         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5188         # family. For these cases, configure is free to use any functions
5189         # found in the SDK headers by default. (Alternatively, we could force
5190         # _WIN32_WINNT to 0x0602 in that case.)
5191         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5192             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5193 #ifdef WINAPI_FAMILY
5194 #include <winapifamily.h>
5195 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5196 #error not desktop
5197 #endif
5198 #endif
5199 EOF
5200         if [ "$pfx" = "" ]; then
5201             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5202             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5203         fi
5204     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5205         eval ${pfx}libc_type=klibc
5206     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5207         eval ${pfx}libc_type=bionic
5208     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5209         eval ${pfx}libc_type=solaris
5210         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5211     fi
5212     check_${pfx}cc <<EOF
5213 #include <time.h>
5214 void *v = localtime_r;
5215 EOF
5216 test "$?" != 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
5217 #include <time.h>
5218 void *v = localtime_r;
5219 EOF
5220
5221     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5222 }
5223
5224 probe_libc
5225 probe_libc host_
5226
5227 # hacks for compiler/libc/os combinations
5228
5229 case $libc_type in
5230     bionic)
5231         add_compat strtod.o strtod=avpriv_strtod
5232         ;;
5233 esac
5234
5235 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5236     add_cppflags '-I\$(SRC_PATH)/compat/float'
5237
5238 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5239
5240 set_default libdir
5241 : ${shlibdir_default:="$libdir"}
5242 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5243
5244 set_default $PATHS_LIST
5245 set_default nm
5246
5247 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5248
5249 enable_weak_pic() {
5250     disabled pic && return
5251     enable pic
5252     add_cppflags -DPIC
5253     case "$target_os" in
5254     mingw*|cygwin*|win*)
5255         ;;
5256     *)
5257         add_cflags -fPIC
5258         add_asflags -fPIC
5259         ;;
5260     esac
5261 }
5262
5263 enabled pic && enable_weak_pic
5264
5265 check_cc <<EOF || die "Symbol mangling check failed."
5266 int ff_extern;
5267 EOF
5268 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5269 extern_prefix=${sym%%ff_extern*}
5270
5271 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5272
5273 _restrict=
5274 for restrict_keyword in restrict __restrict__ __restrict; do
5275     check_cc <<EOF && _restrict=$restrict_keyword && break
5276 void foo(char * $restrict_keyword p);
5277 EOF
5278 done
5279
5280 check_cc <<EOF && enable pragma_deprecated
5281 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5282 EOF
5283
5284 check_cc <<EOF || die "endian test failed"
5285 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5286 EOF
5287 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5288
5289 check_cc <<EOF && enable const_nan
5290 #include <math.h>
5291 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5292 EOF
5293
5294 if ! enabled ppc64 || enabled bigendian; then
5295     disable vsx
5296 fi
5297
5298 check_gas() {
5299     log "check_gas using '$as' as AS"
5300     # :vararg is used on aarch64, arm and ppc altivec
5301     check_as <<EOF || return 1
5302 .macro m n, y:vararg=0
5303 \n: .int \y
5304 .endm
5305 m x
5306 EOF
5307     # .altmacro is only used in arm asm
5308     ! enabled arm || check_as <<EOF || return 1
5309 .altmacro
5310 EOF
5311     enable gnu_as
5312     return 0
5313 }
5314
5315 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5316     nogas=:
5317     enabled_any arm aarch64 && nogas=die
5318     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5319     as_noop=-v
5320
5321     case $as_type in
5322         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5323         gcc)  gaspp_as_type=gas ;;
5324         *)    gaspp_as_type=$as_type ;;
5325     esac
5326
5327     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5328
5329     test "${as#*gas-preprocessor.pl}" != "$as" ||
5330     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5331         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5332
5333     if ! check_gas ; then
5334         as=${gas:=$as}
5335         check_gas || \
5336             $nogas "GNU assembler not found, install/update gas-preprocessor"
5337     fi
5338
5339     check_as <<EOF && enable as_func
5340 .func test
5341 .endfunc
5342 EOF
5343 fi
5344
5345 check_inline_asm inline_asm_labels '"1:\n"'
5346
5347 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5348
5349 if enabled aarch64; then
5350     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5351     # internal assembler in clang 3.3 does not support this instruction
5352     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5353     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5354
5355     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5356
5357 elif enabled alpha; then
5358
5359     check_cflags -mieee
5360
5361 elif enabled arm; then
5362
5363     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5364
5365     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5366 float func(float a, float b){ return a+b; }
5367 EOF
5368
5369     enabled thumb && check_cflags -mthumb || check_cflags -marm
5370
5371     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5372         enable vfp_args
5373     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5374         enable vfp_args
5375     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5376         case "${cross_prefix:-$cc}" in
5377             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5378             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5379 __asm__ (".eabi_attribute 28, 1");
5380 int main(void) { return 0; }
5381 EOF
5382         esac
5383         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5384     fi
5385
5386     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5387     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5388     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5389     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5390     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5391     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5392     enabled setend  && check_insn setend  'setend be'
5393
5394     [ $target_os = linux ] || [ $target_os = android ] ||
5395         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5396             $ARCH_EXT_LIST_ARM
5397
5398     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5399
5400     check_as <<EOF && enable as_arch_directive
5401 .arch armv7-a
5402 EOF
5403     check_as <<EOF && enable as_fpu_directive
5404 .fpu neon
5405 EOF
5406
5407     # llvm's integrated assembler supports .object_arch from llvm 3.5
5408     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5409         check_as <<EOF && enable as_object_arch
5410 .object_arch armv4
5411 EOF
5412
5413     # MS armasm fails to assemble our PIC constructs
5414     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5415
5416 elif enabled mips; then
5417
5418     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5419     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5420     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5421
5422     # Enable minimum ISA based on selected options
5423     if enabled mips64; then
5424         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5425         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5426         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5427     else
5428         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5429         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5430         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5431         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5432     fi
5433
5434     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5435     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5436     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5437     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5438     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5439
5440     if enabled bigendian && enabled msa; then
5441         disable msa
5442     fi
5443
5444 elif enabled parisc; then
5445
5446     if enabled gcc; then
5447         case $($cc -dumpversion) in
5448             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5449         esac
5450     fi
5451
5452 elif enabled ppc; then
5453
5454     enable local_aligned
5455
5456     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5457     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5458     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5459     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5460
5461     if enabled altivec; then
5462         check_cflags -maltivec -mabi=altivec
5463
5464         # check if our compiler supports Motorola AltiVec C API
5465         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5466                                  vector signed int v2 = (vector signed int) { 1 };
5467                                  v1 = vec_add(v1, v2);" ||
5468             disable altivec
5469
5470         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5471     fi
5472
5473     if enabled vsx; then
5474         check_cflags -mvsx &&
5475         check_code cc altivec.h "int v[4] = { 0 };
5476                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5477             disable vsx
5478     fi
5479
5480     if enabled power8; then
5481         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5482     fi
5483
5484 elif enabled x86; then
5485
5486     check_builtin rdtsc    intrin.h   "__rdtsc()"
5487     check_builtin mm_empty mmintrin.h "_mm_empty()"
5488
5489     enable local_aligned
5490
5491     # check whether EBP is available on x86
5492     # As 'i' is stored on the stack, this program will crash
5493     # if the base pointer is used to access it because the
5494     # base pointer is cleared in the inline assembly code.
5495     check_exec_crash <<EOF && enable ebp_available
5496 volatile int i=0;
5497 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5498 return i;
5499 EOF
5500
5501     # check whether EBX is available on x86
5502     check_inline_asm ebx_available '""::"b"(0)' &&
5503         check_inline_asm ebx_available '"":::"%ebx"'
5504
5505     # check whether xmm clobbers are supported
5506     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5507
5508     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5509         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5510
5511     # check whether binutils is new enough to compile SSSE3/MMXEXT
5512     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5513     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5514
5515     probe_x86asm(){
5516         x86asmexe_probe=$1
5517         if check_cmd $x86asmexe_probe -v; then
5518             x86asmexe=$x86asmexe_probe
5519             x86asm_type=nasm
5520             x86asm_debug="-g -F dwarf"
5521             X86ASMDEP=
5522             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5523         elif check_cmd $x86asmexe_probe --version; then
5524             x86asmexe=$x86asmexe_probe
5525             x86asm_type=yasm
5526             x86asm_debug="-g dwarf2"
5527             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5528             X86ASM_DEPFLAGS=
5529         fi
5530         check_x86asm "movbe ecx, [5]" && enable x86asm
5531     }
5532
5533     if ! disabled_any asm mmx x86asm; then
5534         disable x86asm
5535         for program in $x86asmexe nasm yasm; do
5536             probe_x86asm $program && break
5537         done
5538         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5539         X86ASMFLAGS="-f $objformat"
5540         enabled pic               && append X86ASMFLAGS "-DPIC"
5541         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5542         case "$objformat" in
5543             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5544         esac
5545
5546         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5547         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5548         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5549         check_x86asm "CPU amdnop" || disable cpunop
5550     fi
5551
5552     case "$cpu" in
5553         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5554             disable fast_clz
5555         ;;
5556     esac
5557
5558 fi
5559
5560 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5561
5562 check_ldflags -Wl,--as-needed
5563 check_ldflags -Wl,-z,noexecstack
5564
5565 if ! disabled network; then
5566     check_func getaddrinfo $network_extralibs
5567     check_func inet_aton $network_extralibs
5568
5569     check_type netdb.h "struct addrinfo"
5570     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5571     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5572     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5573     check_type poll.h "struct pollfd"
5574     check_type netinet/sctp.h "struct sctp_event_subscribe"
5575     check_struct "sys/socket.h" "struct msghdr" msg_flags
5576     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5577     check_type netinet/in.h "struct sockaddr_in6"
5578     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5579     check_type "sys/types.h sys/socket.h" socklen_t
5580
5581     # Prefer arpa/inet.h over winsock2
5582     if check_header arpa/inet.h ; then
5583         check_func closesocket
5584     elif check_header winsock2.h ; then
5585         check_func_headers winsock2.h closesocket -lws2 &&
5586             network_extralibs="-lws2" ||
5587         { check_func_headers winsock2.h closesocket -lws2_32 &&
5588             network_extralibs="-lws2_32"; } || disable winsock2_h network
5589         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5590
5591         check_type ws2tcpip.h socklen_t
5592         check_type ws2tcpip.h "struct addrinfo"
5593         check_type ws2tcpip.h "struct group_source_req"
5594         check_type ws2tcpip.h "struct ip_mreq_source"
5595         check_type ws2tcpip.h "struct ipv6_mreq"
5596         check_type winsock2.h "struct pollfd"
5597         check_struct winsock2.h "struct sockaddr" sa_len
5598         check_type ws2tcpip.h "struct sockaddr_in6"
5599         check_type ws2tcpip.h "struct sockaddr_storage"
5600     else
5601         disable network
5602     fi
5603 fi
5604
5605 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5606 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5607 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5608 check_builtin sarestart signal.h "SA_RESTART"
5609 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5610 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5611 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5612 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5613
5614 case "$custom_allocator" in
5615     jemalloc)
5616         # jemalloc by default does not use a prefix
5617         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5618     ;;
5619     tcmalloc)
5620         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5621         malloc_prefix=tc_
5622     ;;
5623 esac
5624
5625 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5626 check_func  ${malloc_prefix}memalign            && enable memalign
5627 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5628
5629 check_func  access
5630 check_func_headers stdlib.h arc4random
5631 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5632 check_func  fcntl
5633 check_func  fork
5634 check_func  gethrtime
5635 check_func  getopt
5636 check_func  getrusage
5637 check_func  gettimeofday
5638 check_func  isatty
5639 check_func  mkstemp
5640 check_func  mmap
5641 check_func  mprotect
5642 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5643 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5644 check_func  sched_getaffinity
5645 check_func  setrlimit
5646 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5647 check_func  strerror_r
5648 check_func  sysconf
5649 check_func  sysctl
5650 check_func  usleep
5651
5652 check_func_headers conio.h kbhit
5653 check_func_headers io.h setmode
5654 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5655 check_func_headers mach/mach_time.h mach_absolute_time
5656 check_func_headers stdlib.h getenv
5657 check_func_headers sys/stat.h lstat
5658
5659 check_func_headers windows.h GetProcessAffinityMask
5660 check_func_headers windows.h GetProcessTimes
5661 check_func_headers windows.h GetSystemTimeAsFileTime
5662 check_func_headers windows.h LoadLibrary
5663 check_func_headers windows.h MapViewOfFile
5664 check_func_headers windows.h PeekNamedPipe
5665 check_func_headers windows.h SetConsoleTextAttribute
5666 check_func_headers windows.h SetConsoleCtrlHandler
5667 check_func_headers windows.h Sleep
5668 check_func_headers windows.h VirtualAlloc
5669 check_struct windows.h "CONDITION_VARIABLE" Ptr
5670 check_func_headers glob.h glob
5671 enabled xlib &&
5672     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5673
5674 check_header direct.h
5675 check_header dirent.h
5676 check_header dxgidebug.h
5677 check_header dxva.h
5678 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5679 check_header io.h
5680 check_header libcrystalhd/libcrystalhd_if.h
5681 check_header malloc.h
5682 check_header net/udplite.h
5683 check_header poll.h
5684 check_header sys/param.h
5685 check_header sys/resource.h
5686 check_header sys/select.h
5687 check_header sys/time.h
5688 check_header sys/un.h
5689 check_header termios.h
5690 check_header unistd.h
5691 check_header valgrind/valgrind.h
5692 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5693 check_header windows.h
5694 check_header X11/extensions/XvMClib.h
5695 check_header asm/types.h
5696
5697 # it seems there are versions of clang in some distros that try to use the
5698 # gcc headers, which explodes for stdatomic
5699 # so we also check that atomics actually work here
5700 check_builtin stdatomic stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5701
5702 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5703 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5704 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5705 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5706 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5707
5708 enabled appkit       && check_apple_framework AppKit
5709 enabled audiotoolbox && check_apple_framework AudioToolbox
5710 enabled avfoundation && check_apple_framework AVFoundation
5711 enabled coreimage    && check_apple_framework CoreImage
5712 enabled videotoolbox && check_apple_framework VideoToolbox
5713
5714 check_apple_framework CoreFoundation
5715 check_apple_framework CoreMedia
5716 check_apple_framework CoreVideo
5717
5718 enabled avfoundation && {
5719     disable coregraphics applicationservices
5720     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5721     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5722
5723 enabled videotoolbox && {
5724     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5725     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5726 }
5727
5728 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5729
5730 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5731 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5732 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5733 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5734 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5735
5736 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5737 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5738 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5739 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5740 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5741 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5742 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5743 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5744 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5745
5746 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5747
5748 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5749
5750 if ! disabled w32threads && ! enabled pthreads; then
5751     check_func_headers "windows.h process.h" _beginthreadex &&
5752         enable w32threads || disable w32threads
5753     if ! enabled w32threads && enabled winrt; then
5754         check_func_headers "windows.h" CreateThread &&
5755             enable w32threads || disable w32threads
5756     fi
5757 fi
5758
5759 # check for some common methods of building with pthread support
5760 # do this before the optional library checks as some of them require pthreads
5761 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5762     if check_lib pthreads pthread.h pthread_join   -pthread &&
5763        check_lib pthreads pthread.h pthread_create -pthread; then
5764         add_cflags -pthread
5765     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5766          check_lib pthreads pthread.h pthread_create -pthreads; then
5767         add_cflags -pthreads
5768     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5769          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5770         add_cflags -ldl -pthread
5771     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5772          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5773         :
5774     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5775          check_lib pthreads pthread.h pthread_create -lpthread; then
5776         :
5777     elif check_func pthread_join && check_func pthread_create; then
5778         enable pthreads
5779     fi
5780     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5781 fi
5782
5783
5784 if enabled pthreads; then
5785   check_func pthread_cancel $pthreads_extralibs
5786 fi
5787
5788 enabled pthreads &&
5789     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5790
5791 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5792 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5793 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5794
5795 # On some systems dynamic loading requires no extra linker flags
5796 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5797
5798 check_lib libm math.h sin -lm
5799
5800 atan2f_args=2
5801 copysign_args=2
5802 hypot_args=2
5803 ldexpf_args=2
5804 powf_args=2
5805
5806 for func in $MATH_FUNCS; do
5807     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5808 done
5809
5810 for func in $COMPLEX_FUNCS; do
5811     eval check_complexfunc $func \${${func}_args:-1}
5812 done
5813
5814 # these are off by default, so fail if requested and not available
5815 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5816 enabled cuvid             && { enabled cuda ||
5817                                die "ERROR: CUVID requires CUDA"; }
5818 enabled nvdec             && { enabled cuda ||
5819                                die "ERROR: NVDEC hwaccel requires CUDA"; }
5820 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5821 enabled decklink          && { require_header DeckLinkAPI.h &&
5822                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5823 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5824 enabled frei0r            && require_header frei0r.h
5825 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5826 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5827 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5828 enabled ladspa            && require_header ladspa.h
5829 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5830 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5831 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5832 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5833 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5834                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5835                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5836 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5837 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5838 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5839 enabled libfdk_aac        && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5840                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5841                                  warn "using libfdk without pkg-config"; } }
5842 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"
5843 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5844 enabled fontconfig        && enable libfontconfig
5845 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5846 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5847 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5848 enabled libgme            && { check_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5849                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5850 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5851                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5852                                done || die "ERROR: libgsm not found"; }
5853 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5854 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5855 # While it may appear that require is being used as a pkg-config
5856 # fallback for libmfx, it is actually being used to detect a different
5857 # installation route altogether.  If libmfx is installed via the Intel
5858 # Media SDK or Intel Media Server Studio, these don't come with
5859 # pkg-config support.  Instead, users should make sure that the build
5860 # can find the libraries and headers through other means.
5861 enabled libmfx            && { check_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5862                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5863 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5864 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5865 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5866 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5867                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5868                                die "ERROR: libnpp not found"; }
5869 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5870 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5871 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5872                                { check_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
5873                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5874                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
5875 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
5876 enabled libopenjpeg       && { check_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
5877                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
5878 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
5879 enabled libopus           && {
5880     enabled libopus_decoder && {
5881         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
5882     }
5883     enabled libopus_encoder && {
5884         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
5885     }
5886 }
5887 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
5888 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5889 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
5890 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
5891 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
5892 enabled libsmbclient      && { check_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
5893                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
5894 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
5895 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
5896 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
5897 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
5898 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
5899 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5900 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5901                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5902                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5903 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
5904 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5905 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
5906 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5907 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
5908                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5909
5910 enabled libvpx            && {
5911     enabled libvpx_vp8_decoder && {
5912         check_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5913             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5914                 die "ERROR: libvpx decoder version must be >=0.9.1";
5915     }
5916     enabled libvpx_vp8_encoder && {
5917         check_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5918             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5919                 die "ERROR: libvpx encoder version must be >=0.9.7";
5920     }
5921     enabled libvpx_vp9_decoder && {
5922         check_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5923             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5924     }
5925     enabled libvpx_vp9_encoder && {
5926         check_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5927             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5928     }
5929     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5930         die "libvpx enabled but no supported decoders found"
5931     fi
5932 }
5933
5934 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5935 enabled libwebp           && {
5936     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5937     enabled libwebp_anim_encoder && check_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
5938 enabled libx264           && { check_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
5939                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5940                                  warn "using libx264 without pkg-config"; } } &&
5941                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
5942                              { check_cpp_condition x264.h "X264_MPEG2" &&
5943                                enable libx262; }
5944 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
5945                              require_cpp_condition x265.h "X265_BUILD >= 68"
5946 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
5947 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5948 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
5949 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
5950 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
5951                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5952                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5953 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
5954 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5955 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5956                                { ! enabled cross_compile &&
5957                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5958                                  add_ldflags -L/opt/vc/lib/ &&
5959                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5960                                die "ERROR: mmal not found" &&
5961                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5962 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5963                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5964                                die "ERROR: openal not found"; } &&
5965                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5966                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5967 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5968                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5969                                die "ERROR: opencl not found"; } &&
5970                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5971                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5972                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5973 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5974                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5975                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5976                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5977                                die "ERROR: opengl not found."
5978                              }
5979 enabled omx               && require_header OMX_Core.h
5980 enabled omx_rpi           && { check_header OMX_Core.h ||
5981                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5982                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
5983 enabled openssl           && { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
5984                                check_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
5985                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5986                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5987                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5988                                die "ERROR: openssl not found"; }
5989 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
5990                                  die "ERROR : Rockchip MPP was not found."; } &&
5991                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
5992                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
5993                                { enabled libdrm ||
5994                                  die "ERROR: rkmpp requires --enable-libdrm"; }
5995                              }
5996
5997 if enabled gcrypt; then
5998     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5999     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6000         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6001         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6002         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6003             die "ERROR: gcrypt not found"
6004         add_cflags $gcrypt_cflags
6005     else
6006         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6007     fi
6008 fi
6009
6010 if enabled sdl2; then
6011     SDL2_CONFIG="${cross_prefix}sdl2-config"
6012     if test_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6013         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6014             disable sdl2
6015     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6016         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6017         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6018         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6019         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6020         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6021             enable sdl2
6022     fi
6023     if test $target_os = "mingw32"; then
6024         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6025     fi
6026 fi
6027
6028 if enabled decklink; then
6029     case $target_os in
6030         mingw32*|mingw64*|win32|win64)
6031             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6032             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6033             ;;
6034     esac
6035 fi
6036
6037 enabled securetransport &&
6038     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6039     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6040         disable securetransport
6041
6042 enabled securetransport &&
6043     check_func SecItemImport "-Wl,-framework,CoreFoundation -Wl,-framework,Security"
6044
6045 enabled schannel &&
6046     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6047     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6048     schannel_extralibs="-lsecur32" ||
6049         disable schannel
6050
6051 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6052 enabled makeinfo \
6053     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6054     && enable makeinfo_html || disable makeinfo_html
6055 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6056 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6057 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6058 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6059
6060 # check V4L2 codecs available in the API
6061 check_header linux/fb.h
6062 check_header linux/videodev2.h
6063 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6064 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6065 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6066 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6067 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6068 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6069 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6070 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6071 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6072 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6073 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6074
6075 check_header sys/videoio.h
6076 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6077
6078 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6079 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6080 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6081 # w32api 3.12 had it defined wrong
6082 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6083
6084 check_type "dshow.h" IBaseFilter
6085
6086 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6087 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
6088     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
6089     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
6090     check_header "dev/ic/bt8xx.h"
6091
6092 if check_struct sys/soundcard.h audio_buf_info bytes; then
6093     enable_sanitized sys/soundcard.h
6094 else
6095     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6096     #include <sys/soundcard.h>
6097     audio_buf_info abc;
6098 EOF
6099 fi
6100
6101 enabled alsa && check_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6102     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6103
6104 enabled libjack &&
6105     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6106
6107 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6108
6109 if enabled libcdio; then
6110     check_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6111     check_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6112     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6113     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6114     die "ERROR: No usable libcdio/cdparanoia found"
6115 fi
6116
6117 enabled libxcb && check_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6118     disable libxcb_shm libxcb_shape libxcb_xfixes
6119
6120 if enabled libxcb; then
6121     enabled libxcb_shm    && check_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6122     enabled libxcb_shape  && check_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6123     enabled libxcb_xfixes && check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6124 fi
6125
6126 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6127
6128 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6129 # the desktop api partition
6130 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6131 #ifdef WINAPI_FAMILY
6132 #include <winapifamily.h>
6133 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6134 #error desktop, not uwp
6135 #else
6136 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6137 #endif
6138 #else
6139 #error no family set
6140 #endif
6141 EOF
6142
6143 enabled vaapi &&
6144     check_lib vaapi va/va.h vaInitialize -lva
6145
6146 enabled vaapi &&
6147     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6148     disable vaapi
6149
6150 enabled vaapi &&
6151     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6152
6153 enabled vaapi &&
6154     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6155
6156 enabled vaapi &&
6157     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6158     enable vaapi_1
6159
6160 enabled vdpau &&
6161     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6162     disable vdpau
6163
6164 enabled vdpau &&
6165     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6166
6167 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6168
6169 if enabled x86; then
6170     case $target_os in
6171         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6172             ;;
6173         *)
6174             disable cuda cuvid nvdec nvenc
6175             ;;
6176     esac
6177 else
6178     disable cuda cuvid nvdec nvenc
6179 fi
6180
6181 enabled nvenc &&
6182     check_cc -I$source_path <<EOF || disable nvenc
6183 #include "compat/nvenc/nvEncodeAPI.h"
6184 NV_ENCODE_API_FUNCTION_LIST flist;
6185 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6186 int main(void) { return 0; }
6187 EOF
6188
6189 # Funny iconv installations are not unusual, so check it after all flags have been set
6190 if enabled libc_iconv; then
6191     check_func_headers iconv.h iconv
6192 elif enabled iconv; then
6193     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6194 fi
6195
6196 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6197
6198 # add some useful compiler flags if supported
6199 check_cflags -Wdeclaration-after-statement
6200 check_cflags -Wall
6201 check_cflags -Wdisabled-optimization
6202 check_cflags -Wpointer-arith
6203 check_cflags -Wredundant-decls
6204 check_cflags -Wwrite-strings
6205 check_cflags -Wtype-limits
6206 check_cflags -Wundef
6207 check_cflags -Wmissing-prototypes
6208 check_cflags -Wno-pointer-to-int-cast
6209 check_cflags -Wstrict-prototypes
6210 check_cflags -Wempty-body
6211
6212 if enabled extra_warnings; then
6213     check_cflags -Wcast-qual
6214     check_cflags -Wextra
6215     check_cflags -Wpedantic
6216 fi
6217
6218 check_disable_warning(){
6219     warning_flag=-W${1#-Wno-}
6220     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6221 }
6222
6223 test_cflags -Werror=unused-command-line-argument &&
6224     append unknown_warning_flags "-Werror=unused-command-line-argument"
6225 test_cflags -Werror=unknown-warning-option &&
6226     append unknown_warning_flags "-Werror=unknown-warning-option"
6227
6228 check_disable_warning -Wno-parentheses
6229 check_disable_warning -Wno-switch
6230 check_disable_warning -Wno-format-zero-length
6231 check_disable_warning -Wno-pointer-sign
6232 check_disable_warning -Wno-unused-const-variable
6233 check_disable_warning -Wno-bool-operation
6234
6235 check_disable_warning_headers(){
6236     warning_flag=-W${1#-Wno-}
6237     test_cflags $warning_flag && add_cflags_headers $1
6238 }
6239
6240 check_disable_warning_headers -Wno-deprecated-declarations
6241 check_disable_warning_headers -Wno-unused-variable
6242
6243 check_cc <<EOF && enable blocks_extension
6244 void (^block)(void);
6245 EOF
6246
6247 # add some linker flags
6248 check_ldflags -Wl,--warn-common
6249 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6250 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6251 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6252
6253 # add some strip flags
6254 check_stripflags -x
6255
6256 enabled neon_clobber_test &&
6257     check_ldflags -Wl,--wrap,avcodec_open2              \
6258                   -Wl,--wrap,avcodec_decode_audio4      \
6259                   -Wl,--wrap,avcodec_decode_video2      \
6260                   -Wl,--wrap,avcodec_decode_subtitle2   \
6261                   -Wl,--wrap,avcodec_encode_audio2      \
6262                   -Wl,--wrap,avcodec_encode_video2      \
6263                   -Wl,--wrap,avcodec_encode_subtitle    \
6264                   -Wl,--wrap,avcodec_send_packet        \
6265                   -Wl,--wrap,avcodec_receive_packet     \
6266                   -Wl,--wrap,avcodec_send_frame         \
6267                   -Wl,--wrap,avcodec_receive_frame      \
6268                   -Wl,--wrap,swr_convert                \
6269                   -Wl,--wrap,avresample_convert ||
6270     disable neon_clobber_test
6271
6272 enabled xmm_clobber_test &&
6273     check_ldflags -Wl,--wrap,avcodec_open2              \
6274                   -Wl,--wrap,avcodec_decode_audio4      \
6275                   -Wl,--wrap,avcodec_decode_video2      \
6276                   -Wl,--wrap,avcodec_decode_subtitle2   \
6277                   -Wl,--wrap,avcodec_encode_audio2      \
6278                   -Wl,--wrap,avcodec_encode_video2      \
6279                   -Wl,--wrap,avcodec_encode_subtitle    \
6280                   -Wl,--wrap,avcodec_send_packet        \
6281                   -Wl,--wrap,avcodec_receive_packet     \
6282                   -Wl,--wrap,avcodec_send_frame         \
6283                   -Wl,--wrap,avcodec_receive_frame      \
6284                   -Wl,--wrap,swr_convert                \
6285                   -Wl,--wrap,avresample_convert         \
6286                   -Wl,--wrap,sws_scale ||
6287     disable xmm_clobber_test
6288
6289 check_ld "cc" <<EOF && enable proper_dce
6290 extern const int array[512];
6291 static inline int func(void) { return array[0]; }
6292 int main(void) { return 0; }
6293 EOF
6294
6295 if enabled proper_dce; then
6296     echo "X { local: *; };" > $TMPV
6297     if test_ldflags -Wl,${version_script},$TMPV; then
6298         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6299         check_cc <<EOF && enable symver_asm_label
6300 void ff_foo(void) __asm__ ("av_foo@VERSION");
6301 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6302 EOF
6303         check_cc <<EOF && enable symver_gnu_asm
6304 __asm__(".symver ff_foo,av_foo@VERSION");
6305 void ff_foo(void) {}
6306 EOF
6307     fi
6308 fi
6309
6310 if [ -z "$optflags" ]; then
6311     if enabled small; then
6312         optflags=$cflags_size
6313     elif enabled optimizations; then
6314         optflags=$cflags_speed
6315     else
6316         optflags=$cflags_noopt
6317     fi
6318 fi
6319
6320 if [ -z "$nvccflags" ]; then
6321     nvccflags=$nvccflags_default
6322 fi
6323
6324 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6325     nvccflags="$nvccflags -m64"
6326 else
6327     nvccflags="$nvccflags -m32"
6328 fi
6329
6330 check_optflags(){
6331     check_cflags "$@"
6332     enabled lto && check_ldflags "$@"
6333 }
6334
6335 check_optflags $optflags
6336 check_optflags -fno-math-errno
6337 check_optflags -fno-signed-zeros
6338
6339 if enabled lto; then
6340     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6341     check_cflags  -flto
6342     check_ldflags -flto $cpuflags
6343     disable inline_asm_direct_symbol_refs
6344 fi
6345
6346 enabled ftrapv && check_cflags -ftrapv
6347
6348 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6349 int x;
6350 EOF
6351
6352
6353 if enabled icc; then
6354     # Just warnings, no remarks
6355     check_cflags -w1
6356     # -wd: Disable following warnings
6357     # 144, 167, 556: -Wno-pointer-sign
6358     # 188: enumerated type mixed with another type
6359     # 1292: attribute "foo" ignored
6360     # 1419: external declaration in primary source file
6361     # 10006: ignoring unknown option -fno-signed-zeros
6362     # 10148: ignoring unknown option -Wno-parentheses
6363     # 10156: ignoring option '-W'; no argument required
6364     # 13200: No EMMS instruction before call to function
6365     # 13203: No EMMS instruction before return from function
6366     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6367     # 11030: Warning unknown option --as-needed
6368     # 10156: ignoring option '-export'; no argument required
6369     check_ldflags -wd10156,11030
6370     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6371     enable ebp_available
6372     # The test above does not test linking
6373     enabled lto && disable symver_asm_label
6374     if enabled x86_32; then
6375         icc_version=$($cc -dumpversion)
6376         test ${icc_version%%.*} -ge 11 &&
6377             check_cflags -falign-stack=maintain-16-byte ||
6378             disable aligned_stack
6379     fi
6380 elif enabled gcc; then
6381     check_optflags -fno-tree-vectorize
6382     check_cflags -Werror=format-security
6383     check_cflags -Werror=implicit-function-declaration
6384     check_cflags -Werror=missing-prototypes
6385     check_cflags -Werror=return-type
6386     check_cflags -Werror=vla
6387     check_cflags -Wformat
6388     check_cflags -fdiagnostics-color=auto
6389     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6390 elif enabled llvm_gcc; then
6391     check_cflags -mllvm -stack-alignment=16
6392 elif enabled clang; then
6393     check_cflags -mllvm -stack-alignment=16
6394     check_cflags -mstack-alignment=16
6395     check_cflags -Qunused-arguments
6396     check_cflags -Werror=implicit-function-declaration
6397     check_cflags -Werror=missing-prototypes
6398     check_cflags -Werror=return-type
6399 elif enabled cparser; then
6400     add_cflags -Wno-missing-variable-declarations
6401     add_cflags -Wno-empty-statement
6402 elif enabled armcc; then
6403     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6404     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6405     # 2523: use of inline assembly is deprecated
6406     add_cflags -W${armcc_opt},--diag_suppress=2523
6407     add_cflags -W${armcc_opt},--diag_suppress=1207
6408     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6409     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6410     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6411     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6412 elif enabled pathscale; then
6413     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6414     disable inline_asm
6415 elif enabled_any msvc icl; then
6416     enabled x86_32 && disable aligned_stack
6417     enabled_all x86_32 debug && add_cflags -Oy-
6418     enabled debug && add_ldflags -debug
6419     enable pragma_deprecated
6420     if enabled icl; then
6421         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6422         # (correctly) on icl 13.x.
6423         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6424             add_cflags -Qansi-alias
6425         # Some inline asm is not compilable in debug
6426         if enabled debug; then
6427             disable ebp_available
6428             disable ebx_available
6429         fi
6430     fi
6431     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6432     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6433     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6434     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6435     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6436     # MSVC 2013 and newer can handle it fine.
6437     # If this declspec fails, force including stdlib.h before the restrict redefinition
6438     # happens in config.h.
6439     if [ $_restrict != restrict ]; then
6440         check_cc <<EOF || add_cflags -FIstdlib.h
6441 __declspec($_restrict) void* foo(int);
6442 EOF
6443     fi
6444     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6445     # Issue has been fixed in MSVC v19.00.24218.
6446     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6447         check_cflags -d2SSAOptimizer-
6448     # enable utf-8 source processing on VS2015 U2 and newer
6449     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6450         add_cflags -utf-8
6451 fi
6452
6453 for pfx in "" host_; do
6454     varname=${pfx%_}cc_type
6455     eval "type=\$$varname"
6456     if [ "$type" = "msvc" ]; then
6457         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6458 static inline int foo(int a) { return a; }
6459 EOF
6460     fi
6461 done
6462
6463 case $as_type in
6464     clang)
6465         add_asflags -Qunused-arguments
6466     ;;
6467 esac
6468
6469 case $ld_type in
6470     clang)
6471         check_ldflags -Qunused-arguments
6472     ;;
6473 esac
6474
6475 enable frame_thread_encoder
6476
6477 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6478
6479 check_deps $CONFIG_LIST       \
6480            $CONFIG_EXTRA      \
6481            $HAVE_LIST         \
6482            $ALL_COMPONENTS    \
6483
6484 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"
6485
6486
6487 if test $target_os = "haiku"; then
6488     disable memalign
6489     disable posix_memalign
6490 fi
6491
6492 flatten_extralibs(){
6493     unset nested_entries
6494     list_name=$1
6495     eval list=\$${1}
6496     for entry in $list; do
6497         entry_copy=$entry
6498         resolve entry_copy
6499         append nested_entries $(filter '*_extralibs' $entry_copy)
6500         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6501         eval $entry="\$flat_entries"
6502     done
6503     append $list_name "$nested_entries"
6504
6505     resolve nested_entries
6506     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6507         flatten_extralibs $list_name
6508     fi
6509 }
6510
6511 for linkunit in $LIBRARY_LIST; do
6512     unset current_extralibs
6513     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6514     for comp in ${components}; do
6515         enabled $comp || continue
6516         comp_extralibs="${comp}_extralibs"
6517         append current_extralibs $comp_extralibs
6518     done
6519     eval prepend ${linkunit}_extralibs $current_extralibs
6520 done
6521
6522 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6523     flatten_extralibs ${linkunit}_extralibs
6524     unique  ${linkunit}_extralibs
6525     resolve ${linkunit}_extralibs
6526     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
6527 done
6528
6529 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6530
6531 for thread in $THREADS_LIST; do
6532     if enabled $thread; then
6533         test -n "$thread_type" &&
6534             die "ERROR: Only one thread type must be selected." ||
6535             thread_type="$thread"
6536     fi
6537 done
6538
6539 if disabled stdatomic; then
6540     if enabled atomics_gcc; then
6541         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6542     elif enabled atomics_win32; then
6543         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6544     elif enabled atomics_suncc; then
6545         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6546     elif enabled pthreads; then
6547         add_compat atomics/pthread/stdatomic.o
6548         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6549     else
6550         enabled threads && die "Threading is enabled, but no atomics are available"
6551         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6552     fi
6553 fi
6554
6555 # Check if requested libraries were found.
6556 for lib in $AUTODETECT_LIBS; do
6557     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6558 done
6559
6560 enabled zlib && add_cppflags -DZLIB_CONST
6561
6562 # conditional library dependencies, in linking order
6563 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6564 enabled afir_filter         && prepend avfilter_deps "avcodec"
6565 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6566 enabled aresample_filter    && prepend avfilter_deps "swresample"
6567 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6568 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6569 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6570 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6571 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6572 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6573 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6574 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6575 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6576 enabled pan_filter          && prepend avfilter_deps "swresample"
6577 enabled pp_filter           && prepend avfilter_deps "postproc"
6578 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6579 enabled resample_filter && prepend avfilter_deps "avresample"
6580 enabled sab_filter          && prepend avfilter_deps "swscale"
6581 enabled scale_filter    && prepend avfilter_deps "swscale"
6582 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6583 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6584 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6585 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6586 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6587 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6588 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6589 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6590 enabled spp_filter          && prepend avfilter_deps "avcodec"
6591 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6592 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6593 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6594
6595 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6596
6597 #FIXME
6598 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6599
6600 enabled opus_decoder    && prepend avcodec_deps "swresample"
6601
6602 expand_deps(){
6603     lib_deps=${1}_deps
6604     eval "deps=\$$lib_deps"
6605     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6606     unique $lib_deps
6607 }
6608
6609 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6610 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6611
6612 map 'expand_deps $v' $LIBRARY_LIST
6613
6614 license="LGPL version 2.1 or later"
6615 if enabled nonfree; then
6616     license="nonfree and unredistributable"
6617 elif enabled gplv3; then
6618     license="GPL version 3 or later"
6619 elif enabled lgplv3; then
6620     license="LGPL version 3 or later"
6621 elif enabled gpl; then
6622     license="GPL version 2 or later"
6623 fi
6624
6625 if test "$quiet" != "yes"; then
6626
6627 echo "install prefix            $prefix"
6628 echo "source path               $source_path"
6629 echo "C compiler                $cc"
6630 echo "C library                 $libc_type"
6631 if test "$host_cc" != "$cc"; then
6632     echo "host C compiler           $host_cc"
6633     echo "host C library            $host_libc_type"
6634 fi
6635 echo "ARCH                      $arch ($cpu)"
6636 if test "$build_suffix" != ""; then
6637     echo "build suffix              $build_suffix"
6638 fi
6639 if test "$progs_suffix" != ""; then
6640     echo "progs suffix              $progs_suffix"
6641 fi
6642 if test "$extra_version" != ""; then
6643     echo "version string suffix     $extra_version"
6644 fi
6645 echo "big-endian                ${bigendian-no}"
6646 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6647 if enabled x86; then
6648     echo "standalone assembly       ${x86asm-no}"
6649     echo "x86 assembler             ${x86asmexe}"
6650     echo "MMX enabled               ${mmx-no}"
6651     echo "MMXEXT enabled            ${mmxext-no}"
6652     echo "3DNow! enabled            ${amd3dnow-no}"
6653     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6654     echo "SSE enabled               ${sse-no}"
6655     echo "SSSE3 enabled             ${ssse3-no}"
6656     echo "AESNI enabled             ${aesni-no}"
6657     echo "AVX enabled               ${avx-no}"
6658     echo "AVX2 enabled              ${avx2-no}"
6659     echo "XOP enabled               ${xop-no}"
6660     echo "FMA3 enabled              ${fma3-no}"
6661     echo "FMA4 enabled              ${fma4-no}"
6662     echo "i686 features enabled     ${i686-no}"
6663     echo "CMOV is fast              ${fast_cmov-no}"
6664     echo "EBX available             ${ebx_available-no}"
6665     echo "EBP available             ${ebp_available-no}"
6666 fi
6667 if enabled aarch64; then
6668     echo "NEON enabled              ${neon-no}"
6669     echo "VFP enabled               ${vfp-no}"
6670 fi
6671 if enabled arm; then
6672     echo "ARMv5TE enabled           ${armv5te-no}"
6673     echo "ARMv6 enabled             ${armv6-no}"
6674     echo "ARMv6T2 enabled           ${armv6t2-no}"
6675     echo "VFP enabled               ${vfp-no}"
6676     echo "NEON enabled              ${neon-no}"
6677     echo "THUMB enabled             ${thumb-no}"
6678 fi
6679 if enabled mips; then
6680     echo "MIPS FPU enabled          ${mipsfpu-no}"
6681     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6682     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6683     echo "MIPS MSA enabled          ${msa-no}"
6684     echo "LOONGSON MMI enabled      ${mmi-no}"
6685 fi
6686 if enabled ppc; then
6687     echo "AltiVec enabled           ${altivec-no}"
6688     echo "VSX enabled               ${vsx-no}"
6689     echo "POWER8 enabled            ${power8-no}"
6690     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6691     echo "dcbzl available           ${dcbzl-no}"
6692 fi
6693 echo "debug symbols             ${debug-no}"
6694 echo "strip symbols             ${stripping-no}"
6695 echo "optimize for size         ${small-no}"
6696 echo "optimizations             ${optimizations-no}"
6697 echo "static                    ${static-no}"
6698 echo "shared                    ${shared-no}"
6699 echo "postprocessing support    ${postproc-no}"
6700 echo "network support           ${network-no}"
6701 echo "threading support         ${thread_type-no}"
6702 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6703 echo "texi2html enabled         ${texi2html-no}"
6704 echo "perl enabled              ${perl-no}"
6705 echo "pod2man enabled           ${pod2man-no}"
6706 echo "makeinfo enabled          ${makeinfo-no}"
6707 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6708 test -n "$random_seed" &&
6709     echo "random seed               ${random_seed}"
6710 echo
6711
6712 echo "External libraries:"
6713 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6714 echo
6715
6716 echo "External libraries providing hardware acceleration:"
6717 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6718 echo
6719
6720 echo "Libraries:"
6721 print_enabled '' $LIBRARY_LIST | print_in_columns
6722 echo
6723
6724 echo "Programs:"
6725 print_enabled '' $PROGRAM_LIST | print_in_columns
6726 echo
6727
6728 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6729     echo "Enabled ${type}s:"
6730     eval list=\$$(toupper $type)_LIST
6731     print_enabled '_*' $list | print_in_columns
6732     echo
6733 done
6734
6735 if test -n "$ignore_tests"; then
6736     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6737     echo "Ignored FATE tests:"
6738     echo $ignore_tests | print_in_columns
6739     echo
6740 fi
6741
6742 echo "License: $license"
6743
6744 fi # test "$quiet" != "yes"
6745
6746 if test -n "$WARNINGS"; then
6747     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6748     enabled fatal_warnings && exit 1
6749 fi
6750
6751 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6752
6753 esc(){
6754     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
6755 }
6756
6757 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
6758
6759 enabled stripping || strip="echo skipping strip"
6760 enabled stripping || striptype=""
6761
6762 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6763
6764 cat > ffbuild/config.mak <<EOF
6765 # Automatically generated by configure - do not modify!
6766 ifndef FFMPEG_CONFIG_MAK
6767 FFMPEG_CONFIG_MAK=1
6768 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6769 prefix=$prefix
6770 LIBDIR=\$(DESTDIR)$libdir
6771 SHLIBDIR=\$(DESTDIR)$shlibdir
6772 INCDIR=\$(DESTDIR)$incdir
6773 BINDIR=\$(DESTDIR)$bindir
6774 DATADIR=\$(DESTDIR)$datadir
6775 DOCDIR=\$(DESTDIR)$docdir
6776 MANDIR=\$(DESTDIR)$mandir
6777 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6778 INSTALL_NAME_DIR=$install_name_dir
6779 SRC_PATH=$source_path
6780 SRC_LINK=$source_link
6781 ifndef MAIN_MAKEFILE
6782 SRC_PATH:=\$(SRC_PATH:.%=..%)
6783 endif
6784 CC_IDENT=$cc_ident
6785 ARCH=$arch
6786 INTRINSICS=$intrinsics
6787 CC=$cc
6788 CXX=$cxx
6789 AS=$as
6790 OBJCC=$objcc
6791 LD=$ld
6792 DEPCC=$dep_cc
6793 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6794 DEPAS=$as
6795 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6796 X86ASM=$x86asmexe
6797 DEPX86ASM=$x86asmexe
6798 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6799 AR=$ar
6800 ARFLAGS=$arflags
6801 AR_O=$ar_o
6802 AR_CMD=$ar
6803 NM_CMD=$nm
6804 RANLIB=$ranlib
6805 STRIP=$strip
6806 STRIPTYPE=$striptype
6807 NVCC=$nvcc
6808 CP=cp -p
6809 LN_S=$ln_s
6810 CPPFLAGS=$CPPFLAGS
6811 CFLAGS=$CFLAGS
6812 CXXFLAGS=$CXXFLAGS
6813 OBJCFLAGS=$OBJCFLAGS
6814 ASFLAGS=$ASFLAGS
6815 NVCCFLAGS=$nvccflags
6816 AS_C=$AS_C
6817 AS_O=$AS_O
6818 OBJCC_C=$OBJCC_C
6819 OBJCC_E=$OBJCC_E
6820 OBJCC_O=$OBJCC_O
6821 CC_C=$CC_C
6822 CC_E=$CC_E
6823 CC_O=$CC_O
6824 CXX_C=$CXX_C
6825 CXX_O=$CXX_O
6826 NVCC_C=$NVCC_C
6827 NVCC_O=$NVCC_O
6828 LD_O=$LD_O
6829 X86ASM_O=$X86ASM_O
6830 LD_LIB=$LD_LIB
6831 LD_PATH=$LD_PATH
6832 WINDRES=$windres
6833 DEPWINDRES=$dep_cc
6834 DOXYGEN=$doxygen
6835 LDFLAGS=$LDFLAGS
6836 LDEXEFLAGS=$LDEXEFLAGS
6837 LDSOFLAGS=$LDSOFLAGS
6838 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6839 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6840 X86ASMFLAGS=$X86ASMFLAGS
6841 BUILDSUF=$build_suffix
6842 PROGSSUF=$progs_suffix
6843 FULLNAME=$FULLNAME
6844 LIBPREF=$LIBPREF
6845 LIBSUF=$LIBSUF
6846 LIBNAME=$LIBNAME
6847 SLIBPREF=$SLIBPREF
6848 SLIBSUF=$SLIBSUF
6849 EXESUF=$EXESUF
6850 EXTRA_VERSION=$extra_version
6851 CCDEP=$CCDEP
6852 CXXDEP=$CXXDEP
6853 CCDEP_FLAGS=$CCDEP_FLAGS
6854 ASDEP=$ASDEP
6855 ASDEP_FLAGS=$ASDEP_FLAGS
6856 X86ASMDEP=$X86ASMDEP
6857 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6858 CC_DEPFLAGS=$CC_DEPFLAGS
6859 AS_DEPFLAGS=$AS_DEPFLAGS
6860 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6861 HOSTCC=$host_cc
6862 HOSTLD=$host_ld
6863 HOSTCFLAGS=$host_cflags
6864 HOSTCPPFLAGS=$host_cppflags
6865 HOSTEXESUF=$HOSTEXESUF
6866 HOSTLDFLAGS=$host_ldflags
6867 HOSTEXTRALIBS=$host_extralibs
6868 DEPHOSTCC=$host_cc
6869 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6870 HOSTCCDEP=$HOSTCCDEP
6871 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6872 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6873 HOSTCC_C=$HOSTCC_C
6874 HOSTCC_O=$HOSTCC_O
6875 HOSTLD_O=$HOSTLD_O
6876 TARGET_EXEC=$target_exec $target_exec_args
6877 TARGET_PATH=$target_path
6878 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6879 CFLAGS-ffplay=${sdl2_cflags}
6880 CFLAGS_HEADERS=$CFLAGS_HEADERS
6881 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6882 EXTRALIBS=$extralibs
6883 COMPAT_OBJS=$compat_objs
6884 INSTALL=$install
6885 SLIBNAME=${SLIBNAME}
6886 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6887 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6888 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6889 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6890 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6891 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6892 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6893 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6894 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6895 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6896 NOREDZONE_FLAGS=$noredzone_flags
6897 LIBFUZZER_PATH=$libfuzzer_path
6898 IGNORE_TESTS=$ignore_tests
6899 EOF
6900
6901 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6902
6903 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6904     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
6905 done
6906
6907 cat > $TMPH <<EOF
6908 /* Automatically generated by configure - do not modify! */
6909 #ifndef FFMPEG_CONFIG_H
6910 #define FFMPEG_CONFIG_H
6911 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6912 #define FFMPEG_LICENSE "$(c_escape $license)"
6913 #define CONFIG_THIS_YEAR 2017
6914 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6915 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6916 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6917 #define av_restrict $_restrict
6918 #define EXTERN_PREFIX "${extern_prefix}"
6919 #define EXTERN_ASM ${extern_prefix}
6920 #define BUILDSUF "$build_suffix"
6921 #define SLIBSUF "$SLIBSUF"
6922 #define HAVE_MMX2 HAVE_MMXEXT
6923 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6924 EOF
6925
6926 test -n "$assert_level" &&
6927     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6928
6929 test -n "$malloc_prefix" &&
6930     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6931
6932 if enabled x86asm; then
6933     append config_files $TMPASM
6934     cat > $TMPASM <<EOF
6935 ; Automatically generated by configure - do not modify!
6936 EOF
6937 fi
6938
6939 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6940
6941
6942 mkdir -p doc
6943 mkdir -p tests
6944 mkdir -p tests/api
6945 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6946
6947 print_config ARCH_   "$config_files" $ARCH_LIST
6948 print_config HAVE_   "$config_files" $HAVE_LIST
6949 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6950                                      $CONFIG_EXTRA      \
6951                                      $ALL_COMPONENTS    \
6952
6953 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6954 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6955
6956 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6957 cp_if_changed $TMPH config.h
6958 touch ffbuild/.config
6959
6960 enabled x86asm && cp_if_changed $TMPASM config.asm
6961
6962 cat > $TMPH <<EOF
6963 /* Generated by ffmpeg configure */
6964 #ifndef AVUTIL_AVCONFIG_H
6965 #define AVUTIL_AVCONFIG_H
6966 EOF
6967
6968 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6969
6970 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6971
6972 cp_if_changed $TMPH libavutil/avconfig.h
6973
6974 # generate the lists of enabled components
6975 print_enabled_components(){
6976     file=$1
6977     struct_name=$2
6978     name=$3
6979     shift 3
6980     echo "static const $struct_name * const $name[] = {" > $TMPH
6981     for c in $*; do
6982         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6983     done
6984     echo "    NULL };" >> $TMPH
6985     cp_if_changed $TMPH $file
6986 }
6987
6988 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6989 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6990
6991 # Settings for pkg-config files
6992
6993 cat > $TMPH <<EOF
6994 # Automatically generated by configure - do not modify!
6995 shared=$shared
6996 build_suffix=$build_suffix
6997 prefix=$prefix
6998 libdir=$libdir
6999 incdir=$incdir
7000 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7001 source_path=${source_path}
7002 LIBPREF=${LIBPREF}
7003 LIBSUF=${LIBSUF}
7004 extralibs_avutil="$avutil_extralibs"
7005 extralibs_avcodec="$avcodec_extralibs"
7006 extralibs_avformat="$avformat_extralibs"
7007 extralibs_avdevice="$avdevice_extralibs"
7008 extralibs_avfilter="$avfilter_extralibs"
7009 extralibs_avresample="$avresample_extralibs"
7010 extralibs_postproc="$postproc_extralibs"
7011 extralibs_swscale="$swscale_extralibs"
7012 extralibs_swresample="$swresample_extralibs"
7013 EOF
7014
7015 for lib in $LIBRARY_LIST; do
7016     lib_deps="$(eval echo \$${lib}_deps)"
7017     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
7018 done
7019
7020 cp_if_changed $TMPH ffbuild/config.sh