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 $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 643     done
 644 }
 645
 646 disable_sanitized(){
 647     for var; do
 648         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 649     done
 650 }
 651
 652 do_enable_deep(){
 653     for var; do
 654         enabled $var && continue
 655         eval sel="\$${var}_select"
 656         eval sgs="\$${var}_suggest"
 657         pushvar var sgs
 658         enable_deep $sel
 659         popvar sgs
 660         enable_deep_weak $sgs
 661         popvar var
 662     done
 663 }
 664
 665 enable_deep(){
 666     do_enable_deep $*
 667     enable $*
 668 }
 669
 670 enable_deep_weak(){
 671     for var; do
 672         disabled $var && continue
 673         pushvar var
 674         do_enable_deep $var
 675         popvar var
 676         enable_weak $var
 677     done
 678 }
 679
 680 requested(){
 681     test "${1#!}" = "$1" && op='=' || op=!=
 682     eval test "x\$${1#!}_requested" $op "xyes"
 683 }
 684
 685 enabled(){
 686     test "${1#!}" = "$1" && op='=' || op=!=
 687     eval test "x\$${1#!}" $op "xyes"
 688 }
 689
 690 disabled(){
 691     test "${1#!}" = "$1" && op='=' || op=!=
 692     eval test "x\$${1#!}" $op "xno"
 693 }
 694
 695 enabled_all(){
 696     for opt; do
 697         enabled $opt || return 1
 698     done
 699 }
 700
 701 disabled_all(){
 702     for opt; do
 703         disabled $opt || return 1
 704     done
 705 }
 706
 707 enabled_any(){
 708     for opt; do
 709         enabled $opt && return 0
 710     done
 711 }
 712
 713 disabled_any(){
 714     for opt; do
 715         disabled $opt && return 0
 716     done
 717     return 1
 718 }
 719
 720 set_default(){
 721     for opt; do
 722         eval : \${$opt:=\$${opt}_default}
 723     done
 724 }
 725
 726 is_in(){
 727     value=$1
 728     shift
 729     for var in $*; do
 730         [ $var = $value ] && return 0
 731     done
 732     return 1
 733 }
 734
 735 check_deps(){
 736     for cfg; do
 737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 738         disabled ${cfg}_checking && continue
 739         enable ${cfg}_checking
 740
 741         eval dep_all="\$${cfg}_deps"
 742         eval dep_any="\$${cfg}_deps_any"
 743         eval dep_con="\$${cfg}_conflict"
 744         eval dep_sel="\$${cfg}_select"
 745         eval dep_sgs="\$${cfg}_suggest"
 746         eval dep_ifa="\$${cfg}_if"
 747         eval dep_ifn="\$${cfg}_if_any"
 748
 749         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 750         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 751         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 752
 753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 757         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
 758         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 759
 760         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 761
 762         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 763             # filter out library deps, these do not belong in extralibs
 764             is_in $dep $LIBRARY_LIST && continue
 765             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 766         done
 767
 768         disable ${cfg}_checking
 769     done
 770 }
 771
 772 print_config(){
 773     pfx=$1
 774     files=$2
 775     shift 2
 776     map 'eval echo "$v \${$v:-no}"' "$@" |
 777     awk "BEGIN { split(\"$files\", files) }
 778         {
 779             c = \"$pfx\" toupper(\$1);
 780             v = \$2;
 781             sub(/yes/, 1, v);
 782             sub(/no/,  0, v);
 783             for (f in files) {
 784                 file = files[f];
 785                 if (file ~ /\\.h\$/) {
 786                     printf(\"#define %s %d\\n\", c, v) >>file;
 787                 } else if (file ~ /\\.asm\$/) {
 788                     printf(\"%%define %s %d\\n\", c, v) >>file;
 789                 } else if (file ~ /\\.mak\$/) {
 790                     n = -v ? \"\" : \"!\";
 791                     printf(\"%s%s=yes\\n\", n, c) >>file;
 792                 } else if (file ~ /\\.texi\$/) {
 793                     pre = -v ? \"\" : \"@c \";
 794                     yesno = \$2;
 795                     c2 = tolower(c);
 796                     gsub(/_/, \"-\", c2);
 797                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 798                 }
 799             }
 800         }"
 801 }
 802
 803 print_enabled(){
 804     suf=$1
 805     shift
 806     for v; do
 807         enabled $v && printf "%s\n" ${v%$suf}
 808     done
 809 }
 810
 811 append(){
 812     var=$1
 813     shift
 814     eval "$var=\"\$$var $*\""
 815 }
 816
 817 prepend(){
 818     var=$1
 819     shift
 820     eval "$var=\"$* \$$var\""
 821 }
 822
 823 unique(){
 824     var=$1
 825     uniq_list=""
 826     for tok in $(eval echo \$$var); do
 827         uniq_list="$(filter_out $tok $uniq_list) $tok"
 828     done
 829     eval "$var=\"${uniq_list}\""
 830 }
 831
 832 resolve(){
 833     var=$1
 834     tmpvar=
 835     for entry in $(eval echo \$$var); do
 836         tmpvar="$tmpvar $(eval echo \$${entry})"
 837     done
 838     eval "$var=\"${tmpvar}\""
 839 }
 840
 841 add_cppflags(){
 842     append CPPFLAGS "$@"
 843 }
 844
 845 add_cflags(){
 846     append CFLAGS $($cflags_filter "$@")
 847 }
 848
 849 add_cflags_headers(){
 850     append CFLAGS_HEADERS $($cflags_filter "$@")
 851 }
 852
 853 add_cxxflags(){
 854     append CXXFLAGS $($cflags_filter "$@")
 855 }
 856
 857 add_asflags(){
 858     append ASFLAGS $($asflags_filter "$@")
 859 }
 860
 861 add_objcflags(){
 862     append OBJCFLAGS $($objcflags_filter "$@")
 863 }
 864
 865 add_ldflags(){
 866     append LDFLAGS $($ldflags_filter "$@")
 867 }
 868
 869 add_ldexeflags(){
 870     append LDEXEFLAGS $($ldflags_filter "$@")
 871 }
 872
 873 add_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     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     header=$1
1111     shift
1112     disable_sanitized $header
1113     check_cpp "$@" <<EOF && enable_sanitized $header
1114 #include <$header>
1115 int x;
1116 EOF
1117 }
1118
1119 check_header_objcc(){
1120     log check_header_objcc "$@"
1121     rm -f -- "$TMPO"
1122     header=$1
1123     shift
1124     disable_sanitized $header
1125     {
1126        echo "#include <$header>"
1127        echo "int main(void) { return 0; }"
1128     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1129 }
1130
1131 check_apple_framework(){
1132     log check_apple_framework "$@"
1133     framework="$1"
1134     name="$(tolower $framework)"
1135     header="${framework}/${framework}.h"
1136     disable $name
1137     check_header_objcc $header &&
1138         enable $name && eval ${name}_extralibs='"-framework $framework"'
1139 }
1140
1141 check_func(){
1142     log check_func "$@"
1143     func=$1
1144     shift
1145     disable $func
1146     check_ld "cc" "$@" <<EOF && enable $func
1147 extern int $func();
1148 int main(void){ $func(); }
1149 EOF
1150 }
1151
1152 check_complexfunc(){
1153     log check_complexfunc "$@"
1154     func=$1
1155     narg=$2
1156     shift 2
1157     test $narg = 2 && args="f, g" || args="f * I"
1158     disable $func
1159     check_ld "cc" "$@" <<EOF && enable $func
1160 #include <complex.h>
1161 #include <math.h>
1162 float foo(complex float f, complex float g) { return $func($args); }
1163 int main(void){ return (int) foo; }
1164 EOF
1165 }
1166
1167 check_mathfunc(){
1168     log check_mathfunc "$@"
1169     func=$1
1170     narg=$2
1171     shift 2
1172     test $narg = 2 && args="f, g" || args="f"
1173     disable $func
1174     check_ld "cc" "$@" <<EOF && enable $func
1175 #include <math.h>
1176 float foo(float f, float g) { return $func($args); }
1177 int main(void){ return (int) foo; }
1178 EOF
1179 }
1180
1181 check_func_headers(){
1182     log check_func_headers "$@"
1183     headers=$1
1184     funcs=$2
1185     shift 2
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "#include <stdint.h>"
1191         for func in $funcs; do
1192             echo "long check_$func(void) { return (long) $func; }"
1193         done
1194         echo "int main(void) { int ret = 0;"
1195         # LTO could optimize out the test functions without this
1196         for func in $funcs; do
1197             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1198         done
1199         echo "return ret; }"
1200     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1201 }
1202
1203 check_class_headers_cpp(){
1204     log check_class_headers_cpp "$@"
1205     headers=$1
1206     classes=$2
1207     shift 2
1208     {
1209         for hdr in $headers; do
1210             echo "#include <$hdr>"
1211         done
1212         echo "int main(void) { "
1213         i=1
1214         for class in $classes; do
1215             echo "$class obj$i;"
1216             i=$(expr $i + 1)
1217         done
1218         echo "return 0; }"
1219     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1220 }
1221
1222 check_cpp_condition(){
1223     log check_cpp_condition "$@"
1224     header=$1
1225     condition=$2
1226     shift 2
1227     check_cpp "$@" <<EOF
1228 #include <$header>
1229 #if !($condition)
1230 #error "unsatisfied condition: $condition"
1231 #endif
1232 EOF
1233 }
1234
1235 test_cflags_cc(){
1236     log test_cflags_cc "$@"
1237     flags=$1
1238     header=$2
1239     condition=$3
1240     shift 3
1241     set -- $($cflags_filter "$flags")
1242     check_cc "$@" <<EOF
1243 #include <$header>
1244 #if !($condition)
1245 #error "unsatisfied condition: $condition"
1246 #endif
1247 EOF
1248 }
1249
1250 check_lib(){
1251     log check_lib "$@"
1252     name="$1"
1253     headers="$2"
1254     funcs="$3"
1255     shift 3
1256     disable $name
1257     check_func_headers "$headers" "$funcs" "$@" &&
1258         enable $name && eval ${name}_extralibs="\$@"
1259 }
1260
1261 check_lib_cpp(){
1262     log check_lib_cpp "$@"
1263     name="$1"
1264     headers="$2"
1265     classes="$3"
1266     shift 3
1267     disable $name
1268     check_class_headers_cpp "$headers" "$classes" "$@" &&
1269         enable $name && eval ${name}_extralibs="\$@"
1270 }
1271
1272 check_pkg_config(){
1273     log check_pkg_config "$@"
1274     name="$1"
1275     pkg_version="$2"
1276     pkg="${2%% *}"
1277     headers="$3"
1278     funcs="$4"
1279     shift 4
1280     disable $name
1281     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1282     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1283     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1284     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1285         enable $name &&
1286         set_sanitized "${name}_cflags"    $pkg_cflags &&
1287         set_sanitized "${name}_extralibs" $pkg_libs
1288 }
1289
1290 check_exec(){
1291     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1292 }
1293
1294 check_exec_crash(){
1295     log check_exec_crash "$@"
1296     code=$(cat)
1297
1298     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1299     # are safe but may not be available everywhere.  Thus we use
1300     # raise(SIGTERM) instead.  The check is run in a subshell so we
1301     # can redirect the "Terminated" message from the shell.  SIGBUS
1302     # is not defined by standard C so it is used conditionally.
1303
1304     (check_exec "$@") >> $logfile 2>&1 <<EOF
1305 #include <signal.h>
1306 static void sighandler(int sig){
1307     raise(SIGTERM);
1308 }
1309 int foo(void){
1310     $code
1311 }
1312 int (*func_ptr)(void) = foo;
1313 int main(void){
1314     signal(SIGILL, sighandler);
1315     signal(SIGFPE, sighandler);
1316     signal(SIGSEGV, sighandler);
1317 #ifdef SIGBUS
1318     signal(SIGBUS, sighandler);
1319 #endif
1320     return func_ptr();
1321 }
1322 EOF
1323 }
1324
1325 check_type(){
1326     log check_type "$@"
1327     headers=$1
1328     type=$2
1329     shift 2
1330     disable_sanitized "$type"
1331     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1332 }
1333
1334 check_struct(){
1335     log check_struct "$@"
1336     headers=$1
1337     struct=$2
1338     member=$3
1339     shift 3
1340     disable_sanitized "${struct}_${member}"
1341     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1342         enable_sanitized "${struct}_${member}"
1343 }
1344
1345 check_builtin(){
1346     log check_builtin "$@"
1347     name=$1
1348     headers=$2
1349     builtin=$3
1350     shift 3
1351     disable "$name"
1352     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1353 }
1354
1355 check_compile_assert(){
1356     log check_compile_assert "$@"
1357     name=$1
1358     headers=$2
1359     condition=$3
1360     shift 3
1361     disable "$name"
1362     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1363 }
1364
1365 require(){
1366     log require "$@"
1367     name_version="$1"
1368     name="${1%% *}"
1369     headers="$2"
1370     func="$3"
1371     shift 3
1372     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1373 }
1374
1375 require_cpp(){
1376     name="$1"
1377     headers="$2"
1378     classes="$3"
1379     shift 3
1380     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1381 }
1382
1383 require_header(){
1384     log require "$@"
1385     header="$1"
1386     shift
1387     check_header "$header" "$@" || die "ERROR: $header header not found"
1388 }
1389
1390 require_cpp_condition(){
1391     log require "$@"
1392     header="$1"
1393     condition="$2"
1394     shift 2
1395     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1396 }
1397
1398 use_pkg_config(){
1399     log use_pkg_config "$@"
1400     name="$1"
1401     check_pkg_config "$@" || return 1
1402     add_cflags    $(get_sanitized "${name}_cflags")
1403 }
1404
1405 require_pkg_config(){
1406     log require_pkg_config "$@"
1407     pkg_version="$2"
1408     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1409 }
1410
1411 hostcc_e(){
1412     eval printf '%s\\n' $HOSTCC_E
1413 }
1414
1415 hostcc_o(){
1416     eval printf '%s\\n' $HOSTCC_O
1417 }
1418
1419 check_host_cc(){
1420     log check_host_cc "$@"
1421     cat > $TMPC
1422     log_file $TMPC
1423     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1424 }
1425
1426 check_host_cpp(){
1427     log check_host_cpp "$@"
1428     cat > $TMPC
1429     log_file $TMPC
1430     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1431 }
1432
1433 check_host_cppflags(){
1434     log check_host_cppflags "$@"
1435     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1436 #include <stdlib.h>
1437 EOF
1438 }
1439
1440 check_host_cflags(){
1441     log check_host_cflags "$@"
1442     set -- $($host_cflags_filter "$@")
1443     check_host_cc "$@" <<EOF && append host_cflags "$@"
1444 int x;
1445 EOF
1446 }
1447
1448 check_host_cpp_condition(){
1449     log check_host_cpp_condition "$@"
1450     header=$1
1451     condition=$2
1452     shift 2
1453     check_host_cpp "$@" <<EOF
1454 #include <$header>
1455 #if !($condition)
1456 #error "unsatisfied condition: $condition"
1457 #endif
1458 EOF
1459 }
1460
1461 cp_if_changed(){
1462     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1463     mkdir -p "$(dirname $2)"
1464     cp -f "$1" "$2"
1465 }
1466
1467 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1468 # system-dependent things.
1469
1470 AVCODEC_COMPONENTS="
1471     bsfs
1472     decoders
1473     encoders
1474     hwaccels
1475     parsers
1476 "
1477
1478 AVDEVICE_COMPONENTS="
1479     indevs
1480     outdevs
1481 "
1482
1483 AVFILTER_COMPONENTS="
1484     filters
1485 "
1486
1487 AVFORMAT_COMPONENTS="
1488     demuxers
1489     muxers
1490     protocols
1491 "
1492
1493 AVRESAMPLE_COMPONENTS=""
1494
1495 AVUTIL_COMPONENTS=""
1496
1497 COMPONENT_LIST="
1498     $AVCODEC_COMPONENTS
1499     $AVDEVICE_COMPONENTS
1500     $AVFILTER_COMPONENTS
1501     $AVFORMAT_COMPONENTS
1502     $AVRESAMPLE_COMPONENTS
1503     $AVUTIL_COMPONENTS
1504 "
1505
1506 EXAMPLE_LIST="
1507     avio_dir_cmd_example
1508     avio_reading_example
1509     decode_audio_example
1510     decode_video_example
1511     demuxing_decoding_example
1512     encode_audio_example
1513     encode_video_example
1514     extract_mvs_example
1515     filter_audio_example
1516     filtering_audio_example
1517     filtering_video_example
1518     http_multiclient_example
1519     hw_decode_example
1520     metadata_example
1521     muxing_example
1522     qsvdec_example
1523     remuxing_example
1524     resampling_audio_example
1525     scaling_video_example
1526     transcode_aac_example
1527     transcoding_example
1528 "
1529
1530 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1531     alsa
1532     appkit
1533     avfoundation
1534     bzlib
1535     coreimage
1536     iconv
1537     libxcb
1538     libxcb_shm
1539     libxcb_shape
1540     libxcb_xfixes
1541     lzma
1542     schannel
1543     sdl2
1544     securetransport
1545     sndio
1546     xlib
1547     zlib
1548 "
1549
1550 EXTERNAL_LIBRARY_GPL_LIST="
1551     avisynth
1552     frei0r
1553     libcdio
1554     librubberband
1555     libvidstab
1556     libx264
1557     libx265
1558     libxavs
1559     libxvid
1560 "
1561
1562 EXTERNAL_LIBRARY_NONFREE_LIST="
1563     decklink
1564     libndi_newtek
1565     libfdk_aac
1566     openssl
1567 "
1568
1569 EXTERNAL_LIBRARY_VERSION3_LIST="
1570     gmp
1571     libopencore_amrnb
1572     libopencore_amrwb
1573     libvmaf
1574     libvo_amrwbenc
1575     rkmpp
1576 "
1577
1578 EXTERNAL_LIBRARY_GPLV3_LIST="
1579     libsmbclient
1580 "
1581
1582 EXTERNAL_LIBRARY_LIST="
1583     $EXTERNAL_LIBRARY_GPL_LIST
1584     $EXTERNAL_LIBRARY_NONFREE_LIST
1585     $EXTERNAL_LIBRARY_VERSION3_LIST
1586     $EXTERNAL_LIBRARY_GPLV3_LIST
1587     chromaprint
1588     gcrypt
1589     gnutls
1590     jni
1591     ladspa
1592     libass
1593     libbluray
1594     libbs2b
1595     libcaca
1596     libcelt
1597     libdc1394
1598     libdrm
1599     libflite
1600     libfontconfig
1601     libfreetype
1602     libfribidi
1603     libgme
1604     libgsm
1605     libiec61883
1606     libilbc
1607     libjack
1608     libkvazaar
1609     libmodplug
1610     libmp3lame
1611     libmysofa
1612     libopencv
1613     libopenh264
1614     libopenjpeg
1615     libopenmpt
1616     libopus
1617     libpulse
1618     librsvg
1619     librtmp
1620     libshine
1621     libsmbclient
1622     libsnappy
1623     libsoxr
1624     libspeex
1625     libssh
1626     libtesseract
1627     libtheora
1628     libtwolame
1629     libv4l2
1630     libvorbis
1631     libvpx
1632     libwavpack
1633     libwebp
1634     libxml2
1635     libzimg
1636     libzmq
1637     libzvbi
1638     mediacodec
1639     openal
1640     opencl
1641     opengl
1642 "
1643
1644 HWACCEL_AUTODETECT_LIBRARY_LIST="
1645     audiotoolbox
1646     crystalhd
1647     cuda
1648     cuvid
1649     d3d11va
1650     dxva2
1651     nvdec
1652     nvenc
1653     vaapi
1654     vdpau
1655     videotoolbox
1656     v4l2_m2m
1657     xvmc
1658 "
1659
1660 # catchall list of things that require external libs to link
1661 EXTRALIBS_LIST="
1662     cpu_init
1663     cws2fws
1664 "
1665
1666 HWACCEL_LIBRARY_NONFREE_LIST="
1667     cuda_sdk
1668     libnpp
1669 "
1670
1671 HWACCEL_LIBRARY_LIST="
1672     $HWACCEL_LIBRARY_NONFREE_LIST
1673     libmfx
1674     mmal
1675     omx
1676 "
1677
1678 DOCUMENT_LIST="
1679     doc
1680     htmlpages
1681     manpages
1682     podpages
1683     txtpages
1684 "
1685
1686 FEATURE_LIST="
1687     ftrapv
1688     gray
1689     hardcoded_tables
1690     omx_rpi
1691     runtime_cpudetect
1692     safe_bitstream_reader
1693     shared
1694     small
1695     static
1696     swscale_alpha
1697 "
1698
1699 LIBRARY_LIST="
1700     avcodec
1701     avdevice
1702     avfilter
1703     avformat
1704     avresample
1705     avutil
1706     postproc
1707     swresample
1708     swscale
1709 "
1710
1711 LICENSE_LIST="
1712     gpl
1713     nonfree
1714     version3
1715 "
1716
1717 PROGRAM_LIST="
1718     ffplay
1719     ffprobe
1720     ffserver
1721     ffmpeg
1722 "
1723
1724 SUBSYSTEM_LIST="
1725     dct
1726     dwt
1727     error_resilience
1728     faan
1729     fast_unaligned
1730     fft
1731     lsp
1732     lzo
1733     mdct
1734     pixelutils
1735     network
1736     rdft
1737 "
1738
1739 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1740 CONFIG_LIST="
1741     $DOCUMENT_LIST
1742     $EXAMPLE_LIST
1743     $EXTERNAL_LIBRARY_LIST
1744     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1745     $HWACCEL_LIBRARY_LIST
1746     $HWACCEL_AUTODETECT_LIBRARY_LIST
1747     $FEATURE_LIST
1748     $LICENSE_LIST
1749     $LIBRARY_LIST
1750     $PROGRAM_LIST
1751     $SUBSYSTEM_LIST
1752     autodetect
1753     fontconfig
1754     linux_perf
1755     memory_poisoning
1756     neon_clobber_test
1757     ossfuzz
1758     pic
1759     thumb
1760     valgrind_backtrace
1761     xmm_clobber_test
1762     $COMPONENT_LIST
1763 "
1764
1765 THREADS_LIST="
1766     pthreads
1767     os2threads
1768     w32threads
1769 "
1770
1771 ATOMICS_LIST="
1772     atomics_gcc
1773     atomics_suncc
1774     atomics_win32
1775 "
1776
1777 AUTODETECT_LIBS="
1778     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1779     $HWACCEL_AUTODETECT_LIBRARY_LIST
1780     $THREADS_LIST
1781 "
1782
1783 ARCH_LIST="
1784     aarch64
1785     alpha
1786     arm
1787     avr32
1788     avr32_ap
1789     avr32_uc
1790     bfin
1791     ia64
1792     m68k
1793     mips
1794     mips64
1795     parisc
1796     ppc
1797     ppc64
1798     s390
1799     sh4
1800     sparc
1801     sparc64
1802     tilegx
1803     tilepro
1804     tomi
1805     x86
1806     x86_32
1807     x86_64
1808 "
1809
1810 ARCH_EXT_LIST_ARM="
1811     armv5te
1812     armv6
1813     armv6t2
1814     armv8
1815     neon
1816     vfp
1817     vfpv3
1818     setend
1819 "
1820
1821 ARCH_EXT_LIST_MIPS="
1822     mipsfpu
1823     mips32r2
1824     mips32r5
1825     mips64r2
1826     mips32r6
1827     mips64r6
1828     mipsdsp
1829     mipsdspr2
1830     msa
1831 "
1832
1833 ARCH_EXT_LIST_LOONGSON="
1834     loongson2
1835     loongson3
1836     mmi
1837 "
1838
1839 ARCH_EXT_LIST_X86_SIMD="
1840     aesni
1841     amd3dnow
1842     amd3dnowext
1843     avx
1844     avx2
1845     fma3
1846     fma4
1847     mmx
1848     mmxext
1849     sse
1850     sse2
1851     sse3
1852     sse4
1853     sse42
1854     ssse3
1855     xop
1856 "
1857
1858 ARCH_EXT_LIST_PPC="
1859     altivec
1860     dcbzl
1861     ldbrx
1862     power8
1863     ppc4xx
1864     vsx
1865 "
1866
1867 ARCH_EXT_LIST_X86="
1868     $ARCH_EXT_LIST_X86_SIMD
1869     cpunop
1870     i686
1871 "
1872
1873 ARCH_EXT_LIST="
1874     $ARCH_EXT_LIST_ARM
1875     $ARCH_EXT_LIST_PPC
1876     $ARCH_EXT_LIST_X86
1877     $ARCH_EXT_LIST_MIPS
1878     $ARCH_EXT_LIST_LOONGSON
1879 "
1880
1881 ARCH_FEATURES="
1882     aligned_stack
1883     fast_64bit
1884     fast_clz
1885     fast_cmov
1886     local_aligned
1887     simd_align_16
1888     simd_align_32
1889 "
1890
1891 BUILTIN_LIST="
1892     atomic_cas_ptr
1893     machine_rw_barrier
1894     MemoryBarrier
1895     mm_empty
1896     rdtsc
1897     sarestart
1898     sem_timedwait
1899     sync_val_compare_and_swap
1900 "
1901 HAVE_LIST_CMDLINE="
1902     inline_asm
1903     symver
1904     x86asm
1905 "
1906
1907 HAVE_LIST_PUB="
1908     bigendian
1909     fast_unaligned
1910 "
1911
1912 HEADERS_LIST="
1913     arpa_inet_h
1914     asm_types_h
1915     cdio_paranoia_h
1916     cdio_paranoia_paranoia_h
1917     cuda_h
1918     d3d11_h
1919     dispatch_dispatch_h
1920     dev_bktr_ioctl_bt848_h
1921     dev_bktr_ioctl_meteor_h
1922     dev_ic_bt8xx_h
1923     dev_video_bktr_ioctl_bt848_h
1924     dev_video_meteor_ioctl_meteor_h
1925     direct_h
1926     dirent_h
1927     dlfcn_h
1928     dxgidebug_h
1929     dxva_h
1930     ES2_gl_h
1931     gsm_h
1932     io_h
1933     mach_mach_time_h
1934     machine_ioctl_bt848_h
1935     machine_ioctl_meteor_h
1936     malloc_h
1937     opencv2_core_core_c_h
1938     OpenGL_gl3_h
1939     poll_h
1940     soundcard_h
1941     stdatomic_h
1942     sys_mman_h
1943     sys_param_h
1944     sys_resource_h
1945     sys_select_h
1946     sys_soundcard_h
1947     sys_time_h
1948     sys_un_h
1949     sys_videoio_h
1950     termios_h
1951     udplite_h
1952     unistd_h
1953     valgrind_valgrind_h
1954     windows_h
1955     winsock2_h
1956 "
1957
1958 INTRINSICS_LIST="
1959     intrinsics_neon
1960 "
1961
1962 COMPLEX_FUNCS="
1963     cabs
1964     cexp
1965 "
1966
1967 MATH_FUNCS="
1968     atanf
1969     atan2f
1970     cbrt
1971     cbrtf
1972     copysign
1973     cosf
1974     erf
1975     exp2
1976     exp2f
1977     expf
1978     hypot
1979     isfinite
1980     isinf
1981     isnan
1982     ldexpf
1983     llrint
1984     llrintf
1985     log2
1986     log2f
1987     log10f
1988     lrint
1989     lrintf
1990     powf
1991     rint
1992     round
1993     roundf
1994     sinf
1995     trunc
1996     truncf
1997 "
1998
1999 SYSTEM_FUNCS="
2000     access
2001     aligned_malloc
2002     arc4random
2003     clock_gettime
2004     closesocket
2005     CommandLineToArgvW
2006     CoTaskMemFree
2007     CryptGenRandom
2008     fcntl
2009     flt_lim
2010     fork
2011     getaddrinfo
2012     gethrtime
2013     getopt
2014     GetProcessAffinityMask
2015     GetProcessMemoryInfo
2016     GetProcessTimes
2017     getrusage
2018     GetSystemTimeAsFileTime
2019     gettimeofday
2020     glob
2021     glXGetProcAddress
2022     gmtime_r
2023     inet_aton
2024     isatty
2025     kbhit
2026     LoadLibrary
2027     localtime_r
2028     lstat
2029     lzo1x_999_compress
2030     mach_absolute_time
2031     MapViewOfFile
2032     memalign
2033     mkstemp
2034     mmap
2035     mprotect
2036     nanosleep
2037     PeekNamedPipe
2038     posix_memalign
2039     pthread_cancel
2040     sched_getaffinity
2041     SetConsoleTextAttribute
2042     SetConsoleCtrlHandler
2043     setmode
2044     setrlimit
2045     Sleep
2046     strerror_r
2047     sysconf
2048     sysctl
2049     usleep
2050     UTGetOSTypeFromString
2051     VirtualAlloc
2052     wglGetProcAddress
2053 "
2054
2055 TOOLCHAIN_FEATURES="
2056     as_arch_directive
2057     as_fpu_directive
2058     as_func
2059     as_object_arch
2060     asm_mod_q
2061     attribute_may_alias
2062     attribute_packed
2063     blocks_extension
2064     ebp_available
2065     ebx_available
2066     gnu_as
2067     gnu_windres
2068     ibm_asm
2069     inline_asm_direct_symbol_refs
2070     inline_asm_labels
2071     inline_asm_nonlocal_labels
2072     pragma_deprecated
2073     rsync_contimeout
2074     symver_asm_label
2075     symver_gnu_asm
2076     vfp_args
2077     xform_asm
2078     xmm_clobbers
2079 "
2080
2081 TYPES_LIST="
2082     CONDITION_VARIABLE_Ptr
2083     kCMVideoCodecType_HEVC
2084     socklen_t
2085     struct_addrinfo
2086     struct_group_source_req
2087     struct_ip_mreq_source
2088     struct_ipv6_mreq
2089     struct_msghdr_msg_flags
2090     struct_pollfd
2091     struct_rusage_ru_maxrss
2092     struct_sctp_event_subscribe
2093     struct_sockaddr_in6
2094     struct_sockaddr_sa_len
2095     struct_sockaddr_storage
2096     struct_stat_st_mtim_tv_nsec
2097     struct_v4l2_frmivalenum_discrete
2098 "
2099
2100 HAVE_LIST="
2101     $ARCH_EXT_LIST
2102     $(add_suffix _external $ARCH_EXT_LIST)
2103     $(add_suffix _inline   $ARCH_EXT_LIST)
2104     $ARCH_FEATURES
2105     $ATOMICS_LIST
2106     $BUILTIN_LIST
2107     $COMPLEX_FUNCS
2108     $HAVE_LIST_CMDLINE
2109     $HAVE_LIST_PUB
2110     $HEADERS_LIST
2111     $INTRINSICS_LIST
2112     $MATH_FUNCS
2113     $SYSTEM_FUNCS
2114     $THREADS_LIST
2115     $TOOLCHAIN_FEATURES
2116     $TYPES_LIST
2117     atomics_native
2118     dos_paths
2119     libc_msvcrt
2120     makeinfo
2121     makeinfo_html
2122     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2123     perl
2124     pod2man
2125     section_data_rel_ro
2126     texi2html
2127     threads
2128     uwp
2129     vaapi_drm
2130     vaapi_x11
2131     vdpau_x11
2132     winrt
2133 "
2134
2135 # options emitted with CONFIG_ prefix but not available on the command line
2136 CONFIG_EXTRA="
2137     aandcttables
2138     ac3dsp
2139     adts_header
2140     audio_frame_queue
2141     audiodsp
2142     blockdsp
2143     bswapdsp
2144     cabac
2145     cbs
2146     cbs_h264
2147     cbs_h265
2148     cbs_mpeg2
2149     dirac_parse
2150     dvprofile
2151     exif
2152     faandct
2153     faanidct
2154     fdctdsp
2155     flacdsp
2156     fmtconvert
2157     frame_thread_encoder
2158     g722dsp
2159     golomb
2160     gplv3
2161     h263dsp
2162     h264chroma
2163     h264dsp
2164     h264parse
2165     h264pred
2166     h264qpel
2167     hevcparse
2168     hpeldsp
2169     huffman
2170     huffyuvdsp
2171     huffyuvencdsp
2172     idctdsp
2173     iirfilter
2174     mdct15
2175     intrax8
2176     iso_media
2177     ividsp
2178     jpegtables
2179     lgplv3
2180     libx262
2181     llauddsp
2182     llviddsp
2183     llvidencdsp
2184     lpc
2185     lzf
2186     me_cmp
2187     mpeg_er
2188     mpegaudio
2189     mpegaudiodsp
2190     mpegaudioheader
2191     mpegvideo
2192     mpegvideoenc
2193     mss34dsp
2194     pixblockdsp
2195     qpeldsp
2196     qsv
2197     qsvdec
2198     qsvenc
2199     qsvvpp
2200     rangecoder
2201     riffdec
2202     riffenc
2203     rtpdec
2204     rtpenc_chain
2205     rv34dsp
2206     sinewin
2207     snappy
2208     srtp
2209     startcode
2210     texturedsp
2211     texturedspenc
2212     tpeldsp
2213     vaapi_1
2214     vaapi_encode
2215     vc1dsp
2216     videodsp
2217     vp3dsp
2218     vp56dsp
2219     vp8dsp
2220     wma_freqs
2221     wmv2dsp
2222 "
2223
2224 CMDLINE_SELECT="
2225     $ARCH_EXT_LIST
2226     $CONFIG_LIST
2227     $HAVE_LIST_CMDLINE
2228     $THREADS_LIST
2229     asm
2230     cross_compile
2231     debug
2232     extra_warnings
2233     logging
2234     lto
2235     optimizations
2236     rpath
2237     stripping
2238 "
2239
2240 PATHS_LIST="
2241     bindir
2242     datadir
2243     docdir
2244     incdir
2245     libdir
2246     mandir
2247     pkgconfigdir
2248     prefix
2249     shlibdir
2250     install_name_dir
2251 "
2252
2253 CMDLINE_SET="
2254     $PATHS_LIST
2255     ar
2256     arch
2257     as
2258     assert_level
2259     build_suffix
2260     cc
2261     objcc
2262     cpu
2263     cross_prefix
2264     custom_allocator
2265     cxx
2266     dep_cc
2267     doxygen
2268     env
2269     extra_version
2270     gas
2271     host_cc
2272     host_cflags
2273     host_extralibs
2274     host_ld
2275     host_ldflags
2276     host_os
2277     ignore_tests
2278     install
2279     ld
2280     ln_s
2281     logfile
2282     malloc_prefix
2283     nm
2284     optflags
2285     nvccflags
2286     pkg_config
2287     pkg_config_flags
2288     progs_suffix
2289     random_seed
2290     ranlib
2291     samples
2292     strip
2293     sws_max_filter_size
2294     sysinclude
2295     sysroot
2296     target_exec
2297     target_os
2298     target_path
2299     target_samples
2300     tempprefix
2301     toolchain
2302     valgrind
2303     x86asmexe
2304 "
2305
2306 CMDLINE_APPEND="
2307     extra_cflags
2308     extra_cxxflags
2309     extra_objcflags
2310     host_cppflags
2311 "
2312
2313 # code dependency declarations
2314
2315 # architecture extensions
2316
2317 armv5te_deps="arm"
2318 armv6_deps="arm"
2319 armv6t2_deps="arm"
2320 armv8_deps="aarch64"
2321 neon_deps_any="aarch64 arm"
2322 intrinsics_neon_deps="neon"
2323 vfp_deps_any="aarch64 arm"
2324 vfpv3_deps="vfp"
2325 setend_deps="arm"
2326
2327 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2328
2329 altivec_deps="ppc"
2330 dcbzl_deps="ppc"
2331 ldbrx_deps="ppc"
2332 ppc4xx_deps="ppc"
2333 vsx_deps="altivec"
2334 power8_deps="vsx"
2335
2336 loongson2_deps="mips"
2337 loongson3_deps="mips"
2338 mips32r2_deps="mips"
2339 mips32r5_deps="mips"
2340 mips32r6_deps="mips"
2341 mips64r2_deps="mips"
2342 mips64r6_deps="mips"
2343 mipsfpu_deps="mips"
2344 mipsdsp_deps="mips"
2345 mipsdspr2_deps="mips"
2346 mmi_deps="mips"
2347 msa_deps="mipsfpu"
2348
2349 cpunop_deps="i686"
2350 x86_64_select="i686"
2351 x86_64_suggest="fast_cmov"
2352
2353 amd3dnow_deps="mmx"
2354 amd3dnowext_deps="amd3dnow"
2355 i686_deps="x86"
2356 mmx_deps="x86"
2357 mmxext_deps="mmx"
2358 sse_deps="mmxext"
2359 sse2_deps="sse"
2360 sse3_deps="sse2"
2361 ssse3_deps="sse3"
2362 sse4_deps="ssse3"
2363 sse42_deps="sse4"
2364 aesni_deps="sse42"
2365 avx_deps="sse42"
2366 xop_deps="avx"
2367 fma3_deps="avx"
2368 fma4_deps="avx"
2369 avx2_deps="avx"
2370
2371 mmx_external_deps="x86asm"
2372 mmx_inline_deps="inline_asm x86"
2373 mmx_suggest="mmx_external mmx_inline"
2374
2375 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2376     eval dep=\$${ext}_deps
2377     eval ${ext}_external_deps='"${dep}_external"'
2378     eval ${ext}_inline_deps='"${dep}_inline"'
2379     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2380 done
2381
2382 aligned_stack_if_any="aarch64 ppc x86"
2383 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2384 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2385 fast_unaligned_if_any="aarch64 ppc x86"
2386 simd_align_16_if_any="altivec neon sse"
2387 simd_align_32_if_any="avx"
2388
2389 # system capabilities
2390 symver_if_any="symver_asm_label symver_gnu_asm"
2391 valgrind_backtrace_conflict="optimizations"
2392 valgrind_backtrace_deps="valgrind_valgrind_h"
2393
2394 # threading support
2395 atomics_gcc_if="sync_val_compare_and_swap"
2396 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2397 atomics_win32_if="MemoryBarrier"
2398 atomics_native_if_any="$ATOMICS_LIST"
2399 w32threads_deps="atomics_native"
2400 threads_if_any="$THREADS_LIST"
2401
2402 # subsystems
2403 cbs_h264_select="cbs golomb"
2404 cbs_h265_select="cbs golomb"
2405 cbs_mpeg2_select="cbs"
2406 dct_select="rdft"
2407 dirac_parse_select="golomb"
2408 error_resilience_select="me_cmp"
2409 faandct_deps="faan"
2410 faandct_select="fdctdsp"
2411 faanidct_deps="faan"
2412 faanidct_select="idctdsp"
2413 h264dsp_select="startcode"
2414 hevcparse_select="golomb"
2415 frame_thread_encoder_deps="encoders threads"
2416 intrax8_select="blockdsp idctdsp"
2417 mdct_select="fft"
2418 mdct15_select="fft"
2419 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2420 mpeg_er_select="error_resilience"
2421 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2422 mpegaudiodsp_select="dct"
2423 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2424 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2425 vc1dsp_select="h264chroma qpeldsp startcode"
2426 rdft_select="fft"
2427
2428 # decoders / encoders
2429 aac_decoder_select="adts_header mdct15 mdct sinewin"
2430 aac_fixed_decoder_select="mdct sinewin"
2431 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2432 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2433 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2434 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2435 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2436 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2437 adpcm_g722_decoder_select="g722dsp"
2438 adpcm_g722_encoder_select="g722dsp"
2439 aic_decoder_select="golomb idctdsp"
2440 alac_encoder_select="lpc"
2441 als_decoder_select="bswapdsp"
2442 amrnb_decoder_select="lsp"
2443 amrwb_decoder_select="lsp"
2444 amv_decoder_select="sp5x_decoder exif"
2445 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2446 ape_decoder_select="bswapdsp llauddsp"
2447 apng_decoder_select="zlib"
2448 apng_encoder_select="llvidencdsp zlib"
2449 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2450 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2451 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2452 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2453 atrac1_decoder_select="mdct sinewin"
2454 atrac3_decoder_select="mdct"
2455 atrac3p_decoder_select="mdct sinewin"
2456 avrn_decoder_select="exif jpegtables"
2457 bink_decoder_select="blockdsp hpeldsp"
2458 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2459 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2460 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2461 clearvideo_decoder_select="idctdsp"
2462 cllc_decoder_select="bswapdsp"
2463 comfortnoise_encoder_select="lpc"
2464 cook_decoder_select="audiodsp mdct sinewin"
2465 cscd_decoder_select="lzo"
2466 cscd_decoder_suggest="zlib"
2467 dca_decoder_select="mdct"
2468 dds_decoder_select="texturedsp"
2469 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2470 dnxhd_decoder_select="blockdsp idctdsp"
2471 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2472 dolby_e_decoder_select="mdct"
2473 dvvideo_decoder_select="dvprofile idctdsp"
2474 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2475 dxa_decoder_select="zlib"
2476 dxv_decoder_select="lzf texturedsp"
2477 eac3_decoder_select="ac3_decoder"
2478 eac3_encoder_select="ac3_encoder"
2479 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2480 eatgq_decoder_select="aandcttables"
2481 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2482 exr_decoder_select="zlib"
2483 ffv1_decoder_select="rangecoder"
2484 ffv1_encoder_select="rangecoder"
2485 ffvhuff_decoder_select="huffyuv_decoder"
2486 ffvhuff_encoder_select="huffyuv_encoder"
2487 fic_decoder_select="golomb"
2488 flac_decoder_select="flacdsp"
2489 flac_encoder_select="bswapdsp flacdsp lpc"
2490 flashsv2_decoder_select="zlib"
2491 flashsv2_encoder_select="zlib"
2492 flashsv_decoder_select="zlib"
2493 flashsv_encoder_select="zlib"
2494 flv_decoder_select="h263_decoder"
2495 flv_encoder_select="h263_encoder"
2496 fourxm_decoder_select="blockdsp bswapdsp"
2497 fraps_decoder_select="bswapdsp huffman"
2498 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2499 g729_decoder_select="audiodsp"
2500 h261_decoder_select="mpegvideo"
2501 h261_encoder_select="aandcttables mpegvideoenc"
2502 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2503 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2504 h263i_decoder_select="h263_decoder"
2505 h263p_decoder_select="h263_decoder"
2506 h263p_encoder_select="h263_encoder"
2507 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2508 h264_decoder_suggest="error_resilience"
2509 hap_decoder_select="snappy texturedsp"
2510 hap_encoder_deps="libsnappy"
2511 hap_encoder_select="texturedspenc"
2512 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2513 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2514 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2515 iac_decoder_select="imc_decoder"
2516 imc_decoder_select="bswapdsp fft mdct sinewin"
2517 indeo3_decoder_select="hpeldsp"
2518 indeo4_decoder_select="ividsp"
2519 indeo5_decoder_select="ividsp"
2520 interplay_video_decoder_select="hpeldsp"
2521 jpegls_decoder_select="mjpeg_decoder"
2522 jv_decoder_select="blockdsp"
2523 lagarith_decoder_select="llviddsp"
2524 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2525 magicyuv_decoder_select="llviddsp"
2526 magicyuv_encoder_select="llvidencdsp"
2527 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2528 metasound_decoder_select="lsp mdct sinewin"
2529 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2530 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2531 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2532 mjpegb_decoder_select="mjpeg_decoder"
2533 mlp_decoder_select="mlp_parser"
2534 mlp_encoder_select="lpc"
2535 motionpixels_decoder_select="bswapdsp"
2536 mp1_decoder_select="mpegaudio"
2537 mp1float_decoder_select="mpegaudio"
2538 mp2_decoder_select="mpegaudio"
2539 mp2float_decoder_select="mpegaudio"
2540 mp3_decoder_select="mpegaudio"
2541 mp3adu_decoder_select="mpegaudio"
2542 mp3adufloat_decoder_select="mpegaudio"
2543 mp3float_decoder_select="mpegaudio"
2544 mp3on4_decoder_select="mpegaudio"
2545 mp3on4float_decoder_select="mpegaudio"
2546 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2547 mpc8_decoder_select="mpegaudiodsp"
2548 mpegvideo_decoder_select="mpegvideo"
2549 mpeg1video_decoder_select="mpegvideo"
2550 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2551 mpeg2video_decoder_select="mpegvideo"
2552 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2553 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2554 mpeg4_encoder_select="h263_encoder"
2555 msa1_decoder_select="mss34dsp"
2556 mscc_decoder_select="zlib"
2557 msmpeg4v1_decoder_select="h263_decoder"
2558 msmpeg4v2_decoder_select="h263_decoder"
2559 msmpeg4v2_encoder_select="h263_encoder"
2560 msmpeg4v3_decoder_select="h263_decoder"
2561 msmpeg4v3_encoder_select="h263_encoder"
2562 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2563 mts2_decoder_select="mss34dsp"
2564 mxpeg_decoder_select="mjpeg_decoder"
2565 nellymoser_decoder_select="mdct sinewin"
2566 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2567 nuv_decoder_select="idctdsp lzo"
2568 on2avc_decoder_select="mdct"
2569 opus_decoder_deps="swresample"
2570 opus_decoder_select="mdct15"
2571 opus_encoder_select="audio_frame_queue mdct15"
2572 png_decoder_select="zlib"
2573 png_encoder_select="llvidencdsp zlib"
2574 prores_decoder_select="blockdsp idctdsp"
2575 prores_encoder_select="fdctdsp"
2576 qcelp_decoder_select="lsp"
2577 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2578 ra_144_decoder_select="audiodsp"
2579 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2580 ralf_decoder_select="golomb"
2581 rawvideo_decoder_select="bswapdsp"
2582 rscc_decoder_select="zlib"
2583 rtjpeg_decoder_select="me_cmp"
2584 rv10_decoder_select="h263_decoder"
2585 rv10_encoder_select="h263_encoder"
2586 rv20_decoder_select="h263_decoder"
2587 rv20_encoder_select="h263_encoder"
2588 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2589 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2590 screenpresso_decoder_select="zlib"
2591 shorten_decoder_select="bswapdsp"
2592 sipr_decoder_select="lsp"
2593 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2594 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2595 sonic_decoder_select="golomb rangecoder"
2596 sonic_encoder_select="golomb rangecoder"
2597 sonic_ls_encoder_select="golomb rangecoder"
2598 sp5x_decoder_select="mjpeg_decoder"
2599 srgc_decoder_select="zlib"
2600 svq1_decoder_select="hpeldsp"
2601 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2602 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2603 svq3_decoder_suggest="zlib"
2604 tak_decoder_select="audiodsp"
2605 tdsc_decoder_select="zlib mjpeg_decoder"
2606 theora_decoder_select="vp3_decoder"
2607 thp_decoder_select="mjpeg_decoder"
2608 tiff_decoder_suggest="zlib lzma"
2609 tiff_encoder_suggest="zlib"
2610 truehd_decoder_select="mlp_parser"
2611 truehd_encoder_select="lpc"
2612 truemotion2_decoder_select="bswapdsp"
2613 truespeech_decoder_select="bswapdsp"
2614 tscc_decoder_select="zlib"
2615 twinvq_decoder_select="mdct lsp sinewin"
2616 txd_decoder_select="texturedsp"
2617 utvideo_decoder_select="bswapdsp llviddsp"
2618 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2619 vble_decoder_select="llviddsp"
2620 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2621 vc1image_decoder_select="vc1_decoder"
2622 vorbis_decoder_select="mdct"
2623 vorbis_encoder_select="mdct"
2624 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2625 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2626 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2627 vp6a_decoder_select="vp6_decoder"
2628 vp6f_decoder_select="vp6_decoder"
2629 vp7_decoder_select="h264pred videodsp vp8dsp"
2630 vp8_decoder_select="h264pred videodsp vp8dsp"
2631 vp9_decoder_select="videodsp vp9_parser"
2632 webp_decoder_select="vp8_decoder exif"
2633 wmalossless_decoder_select="llauddsp"
2634 wmapro_decoder_select="mdct sinewin wma_freqs"
2635 wmav1_decoder_select="mdct sinewin wma_freqs"
2636 wmav1_encoder_select="mdct sinewin wma_freqs"
2637 wmav2_decoder_select="mdct sinewin wma_freqs"
2638 wmav2_encoder_select="mdct sinewin wma_freqs"
2639 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2640 wmv1_decoder_select="h263_decoder"
2641 wmv1_encoder_select="h263_encoder"
2642 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2643 wmv2_encoder_select="h263_encoder wmv2dsp"
2644 wmv3_decoder_select="vc1_decoder"
2645 wmv3image_decoder_select="wmv3_decoder"
2646 xma1_decoder_select="wmapro_decoder"
2647 xma2_decoder_select="wmapro_decoder"
2648 zerocodec_decoder_select="zlib"
2649 zlib_decoder_select="zlib"
2650 zlib_encoder_select="zlib"
2651 zmbv_decoder_select="zlib"
2652 zmbv_encoder_select="zlib"
2653
2654 # hardware accelerators
2655 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2656 cuda_deps_any="libdl LoadLibrary"
2657 cuvid_deps="cuda"
2658 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2659 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2660 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2661 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2662 xvmc_deps="X11_extensions_XvMClib_h"
2663
2664 h263_vaapi_hwaccel_deps="vaapi"
2665 h263_vaapi_hwaccel_select="h263_decoder"
2666 h263_videotoolbox_hwaccel_deps="videotoolbox"
2667 h263_videotoolbox_hwaccel_select="h263_decoder"
2668 h264_cuvid_hwaccel_deps="cuda cuvid"
2669 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2670 h264_d3d11va_hwaccel_deps="d3d11va"
2671 h264_d3d11va_hwaccel_select="h264_decoder"
2672 h264_d3d11va2_hwaccel_deps="d3d11va"
2673 h264_d3d11va2_hwaccel_select="h264_decoder"
2674 h264_dxva2_hwaccel_deps="dxva2"
2675 h264_dxva2_hwaccel_select="h264_decoder"
2676 h264_mediacodec_hwaccel_deps="mediacodec"
2677 h264_mmal_hwaccel_deps="mmal"
2678 h264_nvdec_hwaccel_deps="cuda nvdec"
2679 h264_nvdec_hwaccel_select="h264_decoder"
2680 h264_qsv_hwaccel_deps="libmfx"
2681 h264_vaapi_hwaccel_deps="vaapi"
2682 h264_vaapi_hwaccel_select="h264_decoder"
2683 h264_vdpau_hwaccel_deps="vdpau"
2684 h264_vdpau_hwaccel_select="h264_decoder"
2685 h264_videotoolbox_hwaccel_deps="videotoolbox"
2686 h264_videotoolbox_hwaccel_select="h264_decoder"
2687 hevc_cuvid_hwaccel_deps="cuda cuvid"
2688 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2689 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2690 hevc_d3d11va_hwaccel_select="hevc_decoder"
2691 hevc_mediacodec_hwaccel_deps="mediacodec"
2692 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2693 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2694 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2695 hevc_dxva2_hwaccel_select="hevc_decoder"
2696 hevc_nvdec_hwaccel_deps="cuda nvdec"
2697 hevc_nvdec_hwaccel_select="hevc_decoder"
2698 hevc_qsv_hwaccel_deps="libmfx"
2699 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2700 hevc_vaapi_hwaccel_select="hevc_decoder"
2701 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2702 hevc_vdpau_hwaccel_select="hevc_decoder"
2703 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2704 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2705 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2706 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2707 mpeg_xvmc_hwaccel_deps="xvmc"
2708 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2709 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2710 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2711 mpeg1_vdpau_hwaccel_deps="vdpau"
2712 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2713 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2714 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2715 mpeg1_xvmc_hwaccel_deps="xvmc"
2716 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2717 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2718 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2719 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2720 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2721 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2722 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_dxva2_hwaccel_deps="dxva2"
2724 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2726 mpeg2_mmal_hwaccel_deps="mmal"
2727 mpeg2_qsv_hwaccel_deps="libmfx"
2728 mpeg2_vaapi_hwaccel_deps="vaapi"
2729 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2730 mpeg2_vdpau_hwaccel_deps="vdpau"
2731 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2732 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2733 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2734 mpeg2_xvmc_hwaccel_deps="xvmc"
2735 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2736 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2737 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2738 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2739 mpeg4_mmal_hwaccel_deps="mmal"
2740 mpeg4_vaapi_hwaccel_deps="vaapi"
2741 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2742 mpeg4_vdpau_hwaccel_deps="vdpau"
2743 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2744 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2745 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2746 vc1_cuvid_hwaccel_deps="cuda cuvid"
2747 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2748 vc1_d3d11va_hwaccel_deps="d3d11va"
2749 vc1_d3d11va_hwaccel_select="vc1_decoder"
2750 vc1_d3d11va2_hwaccel_deps="d3d11va"
2751 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2752 vc1_dxva2_hwaccel_deps="dxva2"
2753 vc1_dxva2_hwaccel_select="vc1_decoder"
2754 vc1_mmal_hwaccel_deps="mmal"
2755 vc1_qsv_hwaccel_deps="libmfx"
2756 vc1_vaapi_hwaccel_deps="vaapi"
2757 vc1_vaapi_hwaccel_select="vc1_decoder"
2758 vc1_vdpau_hwaccel_deps="vdpau"
2759 vc1_vdpau_hwaccel_select="vc1_decoder"
2760 vp8_cuvid_hwaccel_deps="cuda cuvid"
2761 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2762 vp9_cuvid_hwaccel_deps="cuda cuvid"
2763 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2764 vp8_mediacodec_hwaccel_deps="mediacodec"
2765 vp8_qsv_hwaccel_deps="libmfx"
2766 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2767 vp9_d3d11va_hwaccel_select="vp9_decoder"
2768 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2769 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2770 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2771 vp9_dxva2_hwaccel_select="vp9_decoder"
2772 vp9_mediacodec_hwaccel_deps="mediacodec"
2773 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2774 vp9_vaapi_hwaccel_select="vp9_decoder"
2775 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2776 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2777 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2778 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2779 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2780
2781 # hardware-accelerated codecs
2782 omx_deps="libdl pthreads"
2783 omx_rpi_select="omx"
2784 qsv_deps="libmfx"
2785 qsvdec_select="qsv"
2786 qsvenc_select="qsv"
2787 qsvvpp_select="qsv"
2788 vaapi_encode_deps="vaapi"
2789 v4l2_m2m_deps_any="linux_videodev2_h"
2790
2791 hwupload_cuda_filter_deps="cuda"
2792 scale_npp_filter_deps="cuda libnpp"
2793 scale_cuda_filter_deps="cuda_sdk"
2794 thumbnail_cuda_filter_deps="cuda_sdk"
2795
2796 nvenc_deps="cuda"
2797 nvenc_deps_any="libdl LoadLibrary"
2798 nvenc_encoder_deps="nvenc"
2799
2800 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2801 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2802 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2803 h264_cuvid_decoder_deps="cuda cuvid"
2804 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2805 h264_mediacodec_decoder_deps="mediacodec"
2806 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2807 h264_mmal_decoder_deps="mmal"
2808 h264_nvenc_encoder_deps="nvenc"
2809 h264_omx_encoder_deps="omx"
2810 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2811 h264_qsv_encoder_select="qsvenc"
2812 h264_rkmpp_decoder_deps="rkmpp"
2813 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2814 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2815 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2816 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2817 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2818 hevc_cuvid_decoder_deps="cuda cuvid"
2819 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2820 hevc_mediacodec_decoder_deps="mediacodec"
2821 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2822 hevc_nvenc_encoder_deps="nvenc"
2823 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2824 hevc_qsv_encoder_select="hevcparse qsvenc"
2825 hevc_rkmpp_decoder_deps="rkmpp"
2826 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2827 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2828 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2829 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2830 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2831 mjpeg_cuvid_decoder_deps="cuda cuvid"
2832 mjpeg_qsv_encoder_deps="libmfx"
2833 mjpeg_qsv_encoder_select="qsvenc"
2834 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2835 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2836 mpeg1_cuvid_decoder_deps="cuda cuvid"
2837 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2838 mpeg2_crystalhd_decoder_select="crystalhd"
2839 mpeg2_cuvid_decoder_deps="cuda cuvid"
2840 mpeg2_mmal_decoder_deps="mmal"
2841 mpeg2_mediacodec_decoder_deps="mediacodec"
2842 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2843 mpeg2_qsv_encoder_select="qsvenc"
2844 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2845 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2846 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2847 mpeg4_crystalhd_decoder_select="crystalhd"
2848 mpeg4_cuvid_decoder_deps="cuda cuvid"
2849 mpeg4_mediacodec_decoder_deps="mediacodec"
2850 mpeg4_mmal_decoder_deps="mmal"
2851 mpeg4_omx_encoder_deps="omx"
2852 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2853 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2854 msmpeg4_crystalhd_decoder_select="crystalhd"
2855 nvenc_h264_encoder_select="h264_nvenc_encoder"
2856 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2857 vc1_crystalhd_decoder_select="crystalhd"
2858 vc1_cuvid_decoder_deps="cuda cuvid"
2859 vc1_mmal_decoder_deps="mmal"
2860 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2861 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2862 vp8_cuvid_decoder_deps="cuda cuvid"
2863 vp8_mediacodec_decoder_deps="mediacodec"
2864 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2865 vp8_rkmpp_decoder_deps="rkmpp"
2866 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2867 vp8_vaapi_encoder_select="vaapi_encode"
2868 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2869 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2870 vp9_cuvid_decoder_deps="cuda cuvid"
2871 vp9_mediacodec_decoder_deps="mediacodec"
2872 vp9_rkmpp_decoder_deps="rkmpp"
2873 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2874 vp9_vaapi_encoder_select="vaapi_encode"
2875 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2876 wmv3_crystalhd_decoder_select="crystalhd"
2877
2878 # parsers
2879 aac_parser_select="adts_header"
2880 h264_parser_select="golomb h264dsp h264parse"
2881 hevc_parser_select="hevcparse"
2882 mpegaudio_parser_select="mpegaudioheader"
2883 mpegvideo_parser_select="mpegvideo"
2884 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2885 vc1_parser_select="vc1dsp"
2886
2887 # bitstream_filters
2888 aac_adtstoasc_bsf_select="adts_header"
2889 h264_metadata_bsf_select="cbs_h264"
2890 h264_redundant_pps_bsf_select="cbs_h264"
2891 hevc_metadata_bsf_select="cbs_h265"
2892 mjpeg2jpeg_bsf_select="jpegtables"
2893 mpeg2_metadata_bsf_select="cbs_mpeg2"
2894 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2895
2896 # external libraries
2897 aac_at_decoder_deps="audiotoolbox"
2898 ac3_at_decoder_deps="audiotoolbox"
2899 ac3_at_decoder_select="ac3_parser"
2900 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2901 alac_at_decoder_deps="audiotoolbox"
2902 amr_nb_at_decoder_deps="audiotoolbox"
2903 avisynth_deps_any="libdl LoadLibrary"
2904 avisynth_demuxer_deps="avisynth"
2905 avisynth_demuxer_select="riffdec"
2906 eac3_at_decoder_deps="audiotoolbox"
2907 eac3_at_decoder_select="ac3_parser"
2908 gsm_ms_at_decoder_deps="audiotoolbox"
2909 ilbc_at_decoder_deps="audiotoolbox"
2910 mp1_at_decoder_deps="audiotoolbox"
2911 mp2_at_decoder_deps="audiotoolbox"
2912 mp3_at_decoder_deps="audiotoolbox"
2913 mp1_at_decoder_select="mpegaudioheader"
2914 mp2_at_decoder_select="mpegaudioheader"
2915 mp3_at_decoder_select="mpegaudioheader"
2916 pcm_alaw_at_decoder_deps="audiotoolbox"
2917 pcm_mulaw_at_decoder_deps="audiotoolbox"
2918 qdmc_at_decoder_deps="audiotoolbox"
2919 qdm2_at_decoder_deps="audiotoolbox"
2920 aac_at_encoder_deps="audiotoolbox"
2921 aac_at_encoder_select="audio_frame_queue"
2922 alac_at_encoder_deps="audiotoolbox"
2923 alac_at_encoder_select="audio_frame_queue"
2924 ilbc_at_encoder_deps="audiotoolbox"
2925 ilbc_at_encoder_select="audio_frame_queue"
2926 pcm_alaw_at_encoder_deps="audiotoolbox"
2927 pcm_alaw_at_encoder_select="audio_frame_queue"
2928 pcm_mulaw_at_encoder_deps="audiotoolbox"
2929 pcm_mulaw_at_encoder_select="audio_frame_queue"
2930 chromaprint_muxer_deps="chromaprint"
2931 h264_videotoolbox_encoder_deps="pthreads"
2932 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2933 libcelt_decoder_deps="libcelt"
2934 libfdk_aac_decoder_deps="libfdk_aac"
2935 libfdk_aac_encoder_deps="libfdk_aac"
2936 libfdk_aac_encoder_select="audio_frame_queue"
2937 libgme_demuxer_deps="libgme"
2938 libgsm_decoder_deps="libgsm"
2939 libgsm_encoder_deps="libgsm"
2940 libgsm_ms_decoder_deps="libgsm"
2941 libgsm_ms_encoder_deps="libgsm"
2942 libilbc_decoder_deps="libilbc"
2943 libilbc_encoder_deps="libilbc"
2944 libkvazaar_encoder_deps="libkvazaar"
2945 libmodplug_demuxer_deps="libmodplug"
2946 libmp3lame_encoder_deps="libmp3lame"
2947 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2948 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2949 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2950 libopencore_amrnb_encoder_select="audio_frame_queue"
2951 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2952 libopenh264_decoder_deps="libopenh264"
2953 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2954 libopenh264_encoder_deps="libopenh264"
2955 libopenjpeg_decoder_deps="libopenjpeg"
2956 libopenjpeg_encoder_deps="libopenjpeg"
2957 libopenmpt_demuxer_deps="libopenmpt"
2958 libopus_decoder_deps="libopus"
2959 libopus_encoder_deps="libopus"
2960 libopus_encoder_select="audio_frame_queue"
2961 librsvg_decoder_deps="librsvg"
2962 libshine_encoder_deps="libshine"
2963 libshine_encoder_select="audio_frame_queue"
2964 libspeex_decoder_deps="libspeex"
2965 libspeex_encoder_deps="libspeex"
2966 libspeex_encoder_select="audio_frame_queue"
2967 libtheora_encoder_deps="libtheora"
2968 libtwolame_encoder_deps="libtwolame"
2969 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2970 libvorbis_decoder_deps="libvorbis"
2971 libvorbis_encoder_deps="libvorbis libvorbisenc"
2972 libvorbis_encoder_select="audio_frame_queue"
2973 libvpx_vp8_decoder_deps="libvpx"
2974 libvpx_vp8_encoder_deps="libvpx"
2975 libvpx_vp9_decoder_deps="libvpx"
2976 libvpx_vp9_encoder_deps="libvpx"
2977 libwavpack_encoder_deps="libwavpack"
2978 libwavpack_encoder_select="audio_frame_queue"
2979 libwebp_encoder_deps="libwebp"
2980 libwebp_anim_encoder_deps="libwebp"
2981 libx262_encoder_deps="libx262"
2982 libx264_encoder_deps="libx264"
2983 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2984 libx264rgb_encoder_select="libx264_encoder"
2985 libx265_encoder_deps="libx265"
2986 libxavs_encoder_deps="libxavs"
2987 libxvid_encoder_deps="libxvid"
2988 libzvbi_teletext_decoder_deps="libzvbi"
2989 videotoolbox_suggest="coreservices"
2990 videotoolbox_deps="corefoundation coremedia corevideo"
2991 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2992
2993 # demuxers / muxers
2994 ac3_demuxer_select="ac3_parser"
2995 aiff_muxer_select="iso_media"
2996 asf_demuxer_select="riffdec"
2997 asf_o_demuxer_select="riffdec"
2998 asf_muxer_select="riffenc"
2999 asf_stream_muxer_select="asf_muxer"
3000 avi_demuxer_select="iso_media riffdec exif"
3001 avi_muxer_select="riffenc"
3002 caf_demuxer_select="iso_media riffdec"
3003 caf_muxer_select="iso_media"
3004 dash_muxer_select="mp4_muxer"
3005 dash_demuxer_deps="libxml2"
3006 dirac_demuxer_select="dirac_parser"
3007 dts_demuxer_select="dca_parser"
3008 dtshd_demuxer_select="dca_parser"
3009 dv_demuxer_select="dvprofile"
3010 dv_muxer_select="dvprofile"
3011 dxa_demuxer_select="riffdec"
3012 eac3_demuxer_select="ac3_parser"
3013 f4v_muxer_select="mov_muxer"
3014 fifo_muxer_deps="threads"
3015 flac_demuxer_select="flac_parser"
3016 hds_muxer_select="flv_muxer"
3017 hls_muxer_select="mpegts_muxer"
3018 hls_muxer_suggest="gcrypt openssl"
3019 image2_alias_pix_demuxer_select="image2_demuxer"
3020 image2_brender_pix_demuxer_select="image2_demuxer"
3021 ipod_muxer_select="mov_muxer"
3022 ismv_muxer_select="mov_muxer"
3023 matroska_audio_muxer_select="matroska_muxer"
3024 matroska_demuxer_select="iso_media riffdec"
3025 matroska_demuxer_suggest="bzlib lzo zlib"
3026 matroska_muxer_select="iso_media riffenc"
3027 mmf_muxer_select="riffenc"
3028 mov_demuxer_select="iso_media riffdec"
3029 mov_demuxer_suggest="zlib"
3030 mov_muxer_select="iso_media riffenc rtpenc_chain"
3031 mp3_demuxer_select="mpegaudio_parser"
3032 mp3_muxer_select="mpegaudioheader"
3033 mp4_muxer_select="mov_muxer"
3034 mpegts_demuxer_select="iso_media"
3035 mpegts_muxer_select="adts_muxer latm_muxer"
3036 mpegtsraw_demuxer_select="mpegts_demuxer"
3037 mxf_d10_muxer_select="mxf_muxer"
3038 mxf_opatom_muxer_select="mxf_muxer"
3039 nut_muxer_select="riffenc"
3040 nuv_demuxer_select="riffdec"
3041 oga_muxer_select="ogg_muxer"
3042 ogg_demuxer_select="dirac_parse"
3043 ogv_muxer_select="ogg_muxer"
3044 opus_muxer_select="ogg_muxer"
3045 psp_muxer_select="mov_muxer"
3046 rtp_demuxer_select="sdp_demuxer"
3047 rtp_muxer_select="golomb"
3048 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3049 rtsp_demuxer_select="http_protocol rtpdec"
3050 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3051 sap_demuxer_select="sdp_demuxer"
3052 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3053 sdp_demuxer_select="rtpdec"
3054 smoothstreaming_muxer_select="ismv_muxer"
3055 spdif_demuxer_select="adts_header"
3056 spdif_muxer_select="adts_header"
3057 spx_muxer_select="ogg_muxer"
3058 swf_demuxer_suggest="zlib"
3059 tak_demuxer_select="tak_parser"
3060 tg2_muxer_select="mov_muxer"
3061 tgp_muxer_select="mov_muxer"
3062 vobsub_demuxer_select="mpegps_demuxer"
3063 w64_demuxer_select="wav_demuxer"
3064 w64_muxer_select="wav_muxer"
3065 wav_demuxer_select="riffdec"
3066 wav_muxer_select="riffenc"
3067 webm_muxer_select="iso_media riffenc"
3068 webm_dash_manifest_demuxer_select="matroska_demuxer"
3069 wtv_demuxer_select="mpegts_demuxer riffdec"
3070 wtv_muxer_select="mpegts_muxer riffenc"
3071 xmv_demuxer_select="riffdec"
3072 xwma_demuxer_select="riffdec"
3073
3074 # indevs / outdevs
3075 alsa_indev_deps="alsa"
3076 alsa_outdev_deps="alsa"
3077 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3078 avfoundation_indev_suggest="coregraphics applicationservices"
3079 avfoundation_indev_extralibs="-framework Foundation"
3080 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3081 caca_outdev_deps="libcaca"
3082 decklink_deps_any="libdl LoadLibrary"
3083 decklink_indev_deps="decklink threads"
3084 decklink_indev_extralibs="-lstdc++"
3085 decklink_outdev_deps="decklink threads"
3086 decklink_outdev_extralibs="-lstdc++"
3087 libndi_newtek_indev_deps="libndi_newtek"
3088 libndi_newtek_indev_extralibs="-lndi"
3089 libndi_newtek_outdev_deps="libndi_newtek"
3090 libndi_newtek_outdev_extralibs="-lndi"
3091 dshow_indev_deps="IBaseFilter"
3092 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3093 fbdev_indev_deps="linux_fb_h"
3094 fbdev_outdev_deps="linux_fb_h"
3095 gdigrab_indev_deps="CreateDIBSection"
3096 gdigrab_indev_extralibs="-lgdi32"
3097 gdigrab_indev_select="bmp_decoder"
3098 iec61883_indev_deps="libiec61883"
3099 jack_indev_deps="libjack"
3100 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3101 kmsgrab_indev_deps="libdrm"
3102 lavfi_indev_deps="avfilter"
3103 libcdio_indev_deps="libcdio"
3104 libdc1394_indev_deps="libdc1394"
3105 openal_indev_deps="openal"
3106 opengl_outdev_deps="opengl"
3107 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3108 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3109 pulse_indev_deps="libpulse"
3110 pulse_outdev_deps="libpulse"
3111 sdl2_outdev_deps="sdl2"
3112 sndio_indev_deps="sndio"
3113 sndio_outdev_deps="sndio"
3114 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3115 v4l2_indev_suggest="libv4l2"
3116 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3117 v4l2_outdev_suggest="libv4l2"
3118 vfwcap_indev_deps="vfw32 vfwcap_defines"
3119 xcbgrab_indev_deps="libxcb"
3120 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3121 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3122 xv_outdev_extralibs="-lXv -lX11 -lXext"
3123
3124 # protocols
3125 async_protocol_deps="threads"
3126 bluray_protocol_deps="libbluray"
3127 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3128 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3129 ffrtmpcrypt_protocol_select="tcp_protocol"
3130 ffrtmphttp_protocol_conflict="librtmp_protocol"
3131 ffrtmphttp_protocol_select="http_protocol"
3132 ftp_protocol_select="tcp_protocol"
3133 gopher_protocol_select="network"
3134 http_protocol_select="tcp_protocol"
3135 http_protocol_suggest="zlib"
3136 httpproxy_protocol_select="tcp_protocol"
3137 httpproxy_protocol_suggest="zlib"
3138 https_protocol_select="tls_protocol"
3139 https_protocol_suggest="zlib"
3140 icecast_protocol_select="http_protocol"
3141 librtmp_protocol_deps="librtmp"
3142 librtmpe_protocol_deps="librtmp"
3143 librtmps_protocol_deps="librtmp"
3144 librtmpt_protocol_deps="librtmp"
3145 librtmpte_protocol_deps="librtmp"
3146 libsmbclient_protocol_deps="libsmbclient gplv3"
3147 libssh_protocol_deps="libssh"
3148 mmsh_protocol_select="http_protocol"
3149 mmst_protocol_select="network"
3150 rtmp_protocol_conflict="librtmp_protocol"
3151 rtmp_protocol_select="tcp_protocol"
3152 rtmp_protocol_suggest="zlib"
3153 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3154 rtmpe_protocol_suggest="zlib"
3155 rtmps_protocol_conflict="librtmp_protocol"
3156 rtmps_protocol_select="tls_protocol"
3157 rtmps_protocol_suggest="zlib"
3158 rtmpt_protocol_select="ffrtmphttp_protocol"
3159 rtmpt_protocol_suggest="zlib"
3160 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3161 rtmpte_protocol_suggest="zlib"
3162 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3163 rtmpts_protocol_suggest="zlib"
3164 rtp_protocol_select="udp_protocol"
3165 schannel_conflict="openssl gnutls"
3166 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3167 sctp_protocol_select="network"
3168 securetransport_conflict="openssl gnutls"
3169 srtp_protocol_select="rtp_protocol srtp"
3170 tcp_protocol_select="network"
3171 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3172 tls_protocol_select="tcp_protocol"
3173 udp_protocol_select="network"
3174 udplite_protocol_select="network"
3175 unix_protocol_deps="sys_un_h"
3176 unix_protocol_select="network"
3177
3178 # filters
3179 afftfilt_filter_deps="avcodec"
3180 afftfilt_filter_select="fft"
3181 afir_filter_deps="avcodec"
3182 afir_filter_select="fft"
3183 amovie_filter_deps="avcodec avformat"
3184 aresample_filter_deps="swresample"
3185 ass_filter_deps="libass"
3186 atempo_filter_deps="avcodec"
3187 atempo_filter_select="rdft"
3188 azmq_filter_deps="libzmq"
3189 blackframe_filter_deps="gpl"
3190 boxblur_filter_deps="gpl"
3191 bs2b_filter_deps="libbs2b"
3192 colormatrix_filter_deps="gpl"
3193 coreimage_filter_deps="coreimage appkit"
3194 coreimage_filter_extralibs="-framework OpenGL"
3195 coreimagesrc_filter_deps="coreimage appkit"
3196 coreimagesrc_filter_extralibs="-framework OpenGL"
3197 cover_rect_filter_deps="avcodec avformat gpl"
3198 cropdetect_filter_deps="gpl"
3199 deinterlace_qsv_filter_deps="libmfx"
3200 deinterlace_vaapi_filter_deps="vaapi"
3201 delogo_filter_deps="gpl"
3202 deshake_filter_select="pixelutils"
3203 deshake_filter_suggest="opencl"
3204 drawtext_filter_deps="libfreetype"
3205 drawtext_filter_suggest="libfontconfig libfribidi"
3206 elbg_filter_deps="avcodec"
3207 eq_filter_deps="gpl"
3208 fftfilt_filter_deps="avcodec"
3209 fftfilt_filter_select="rdft"
3210 find_rect_filter_deps="avcodec avformat gpl"
3211 firequalizer_filter_deps="avcodec"
3212 firequalizer_filter_select="rdft"
3213 flite_filter_deps="libflite"
3214 framerate_filter_select="pixelutils"
3215 frei0r_filter_deps="frei0r libdl"
3216 frei0r_src_filter_deps="frei0r libdl"
3217 fspp_filter_deps="gpl"
3218 geq_filter_deps="gpl"
3219 histeq_filter_deps="gpl"
3220 hqdn3d_filter_deps="gpl"
3221 interlace_filter_deps="gpl"
3222 kerndeint_filter_deps="gpl"
3223 ladspa_filter_deps="ladspa libdl"
3224 mcdeint_filter_deps="avcodec gpl"
3225 movie_filter_deps="avcodec avformat"
3226 mpdecimate_filter_deps="gpl"
3227 mpdecimate_filter_select="pixelutils"
3228 mptestsrc_filter_deps="gpl"
3229 negate_filter_deps="lut_filter"
3230 nnedi_filter_deps="gpl"
3231 ocr_filter_deps="libtesseract"
3232 ocv_filter_deps="libopencv"
3233 overlay_qsv_filter_deps="libmfx"
3234 overlay_qsv_filter_select="qsvvpp"
3235 owdenoise_filter_deps="gpl"
3236 pan_filter_deps="swresample"
3237 perspective_filter_deps="gpl"
3238 phase_filter_deps="gpl"
3239 pp7_filter_deps="gpl"
3240 pp_filter_deps="gpl postproc"
3241 pullup_filter_deps="gpl"
3242 removelogo_filter_deps="avcodec avformat swscale"
3243 repeatfields_filter_deps="gpl"
3244 resample_filter_deps="avresample"
3245 rubberband_filter_deps="librubberband"
3246 sab_filter_deps="gpl swscale"
3247 scale2ref_filter_deps="swscale"
3248 scale_filter_deps="swscale"
3249 scale_qsv_filter_deps="libmfx"
3250 select_filter_select="pixelutils"
3251 showcqt_filter_deps="avcodec avformat swscale"
3252 showcqt_filter_suggest="libfontconfig libfreetype"
3253 showcqt_filter_select="fft"
3254 showfreqs_filter_deps="avcodec"
3255 showfreqs_filter_select="fft"
3256 showspectrum_filter_deps="avcodec"
3257 showspectrum_filter_select="fft"
3258 showspectrumpic_filter_deps="avcodec"
3259 showspectrumpic_filter_select="fft"
3260 signature_filter_deps="gpl avcodec avformat"
3261 smartblur_filter_deps="gpl swscale"
3262 sofalizer_filter_deps="libmysofa avcodec"
3263 sofalizer_filter_select="fft"
3264 spectrumsynth_filter_deps="avcodec"
3265 spectrumsynth_filter_select="fft"
3266 spp_filter_deps="gpl avcodec"
3267 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3268 stereo3d_filter_deps="gpl"
3269 subtitles_filter_deps="avformat avcodec libass"
3270 super2xsai_filter_deps="gpl"
3271 pixfmts_super2xsai_test_deps="super2xsai_filter"
3272 tinterlace_filter_deps="gpl"
3273 tinterlace_merge_test_deps="tinterlace_filter"
3274 tinterlace_pad_test_deps="tinterlace_filter"
3275 tonemap_filter_deps="const_nan"
3276 uspp_filter_deps="gpl avcodec"
3277 unsharp_filter_suggest="opencl"
3278 vaguedenoiser_filter_deps="gpl"
3279 vidstabdetect_filter_deps="libvidstab"
3280 vidstabtransform_filter_deps="libvidstab"
3281 libvmaf_filter_deps="libvmaf"
3282 zmq_filter_deps="libzmq"
3283 zoompan_filter_deps="swscale"
3284 zscale_filter_deps="libzimg const_nan"
3285 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3286 vpp_qsv_filter_deps="libmfx"
3287 vpp_qsv_filter_select="qsvvpp"
3288
3289 # examples
3290 avio_dir_cmd_deps="avformat avutil"
3291 avio_reading_deps="avformat avcodec avutil"
3292 decode_audio_example_deps="avcodec avutil"
3293 decode_video_example_deps="avcodec avutil"
3294 demuxing_decoding_example_deps="avcodec avformat avutil"
3295 encode_audio_example_deps="avcodec avutil"
3296 encode_video_example_deps="avcodec avutil"
3297 extract_mvs_example_deps="avcodec avformat avutil"
3298 filter_audio_example_deps="avfilter avutil"
3299 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3300 filtering_video_example_deps="avfilter avcodec avformat avutil"
3301 http_multiclient_example_deps="avformat avutil fork"
3302 hw_decode_example_deps="avcodec avformat avutil"
3303 metadata_example_deps="avformat avutil"
3304 muxing_example_deps="avcodec avformat avutil swscale"
3305 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3306 remuxing_example_deps="avcodec avformat avutil"
3307 resampling_audio_example_deps="avutil swresample"
3308 scaling_video_example_deps="avutil swscale"
3309 transcode_aac_example_deps="avcodec avformat swresample"
3310 transcoding_example_deps="avfilter avcodec avformat avutil"
3311
3312 # EXTRALIBS_LIST
3313 cpu_init_extralibs="pthreads_extralibs"
3314 cws2fws_extralibs="zlib_extralibs"
3315
3316 # libraries, in linking order
3317 avcodec_deps="avutil"
3318 avcodec_suggest="libm"
3319 avcodec_select="null_bsf"
3320 avdevice_deps="avformat avcodec avutil"
3321 avdevice_suggest="libm"
3322 avfilter_deps="avutil"
3323 avfilter_suggest="libm"
3324 avformat_deps="avcodec avutil"
3325 avformat_suggest="libm network zlib"
3326 avresample_deps="avutil"
3327 avresample_suggest="libm"
3328 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3329 postproc_deps="avutil gpl"
3330 postproc_suggest="libm"
3331 swresample_deps="avutil"
3332 swresample_suggest="libm libsoxr"
3333 swscale_deps="avutil"
3334 swscale_suggest="libm"
3335
3336 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3337 avfilter_extralibs="pthreads_extralibs"
3338 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3339
3340 # programs
3341 ffmpeg_deps="avcodec avfilter avformat swresample"
3342 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3343                null_filter
3344                trim_filter"
3345 ffmpeg_suggest="ole32 psapi shell32"
3346 ffplay_deps="avcodec avformat swscale swresample sdl2"
3347 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3348 ffplay_suggest="shell32"
3349 ffprobe_deps="avcodec avformat"
3350 ffprobe_suggest="shell32"
3351 ffserver_deps="avformat fork sarestart"
3352 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3353
3354 # documentation
3355 podpages_deps="perl"
3356 manpages_deps="perl pod2man"
3357 htmlpages_deps="perl"
3358 htmlpages_deps_any="makeinfo_html texi2html"
3359 txtpages_deps="perl makeinfo"
3360 doc_deps_any="manpages htmlpages podpages txtpages"
3361
3362 # default parameters
3363
3364 logfile="ffbuild/config.log"
3365
3366 # installation paths
3367 prefix_default="/usr/local"
3368 bindir_default='${prefix}/bin'
3369 datadir_default='${prefix}/share/ffmpeg'
3370 docdir_default='${prefix}/share/doc/ffmpeg'
3371 incdir_default='${prefix}/include'
3372 libdir_default='${prefix}/lib'
3373 mandir_default='${prefix}/share/man'
3374
3375 # toolchain
3376 ar_default="ar"
3377 cc_default="gcc"
3378 cxx_default="g++"
3379 host_cc_default="gcc"
3380 doxygen_default="doxygen"
3381 install="install"
3382 ln_s_default="ln -s -f"
3383 nm_default="nm -g"
3384 pkg_config_default=pkg-config
3385 ranlib_default="ranlib"
3386 strip_default="strip"
3387 version_script='--version-script'
3388 x86asmexe_default="nasm"
3389 windres_default="windres"
3390 nvcc_default="nvcc"
3391 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3392 striptype="direct"
3393
3394 # OS
3395 target_os_default=$(tolower $(uname -s))
3396 host_os=$target_os_default
3397
3398 # machine
3399 if test "$target_os_default" = aix; then
3400     arch_default=$(uname -p)
3401     strip_default="strip -X32_64"
3402 else
3403     arch_default=$(uname -m)
3404 fi
3405 cpu="generic"
3406 intrinsics="none"
3407
3408 # configurable options
3409 enable $PROGRAM_LIST
3410 enable $DOCUMENT_LIST
3411 enable $EXAMPLE_LIST
3412 enable $(filter_out avresample $LIBRARY_LIST)
3413 enable stripping
3414
3415 enable asm
3416 enable debug
3417 enable doc
3418 enable faan faandct faanidct
3419 enable optimizations
3420 enable runtime_cpudetect
3421 enable safe_bitstream_reader
3422 enable static
3423 enable swscale_alpha
3424 enable valgrind_backtrace
3425
3426 sws_max_filter_size_default=256
3427 set_default sws_max_filter_size
3428
3429 # internal components are enabled by default
3430 enable $EXTRALIBS_LIST
3431
3432 # Avoid external, non-system, libraries getting enabled by dependency resolution
3433 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3434
3435 # build settings
3436 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3437 LIBPREF="lib"
3438 LIBSUF=".a"
3439 FULLNAME='$(NAME)$(BUILDSUF)'
3440 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3441 SLIBPREF="lib"
3442 SLIBSUF=".so"
3443 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3444 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3445 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3446 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3447 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3448 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3449 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3450
3451 asflags_filter=echo
3452 cflags_filter=echo
3453 ldflags_filter=echo
3454
3455 AS_C='-c'
3456 AS_O='-o $@'
3457 CC_C='-c'
3458 CC_E='-E -o $@'
3459 CC_O='-o $@'
3460 CXX_C='-c'
3461 CXX_O='-o $@'
3462 OBJCC_C='-c'
3463 OBJCC_E='-E -o $@'
3464 OBJCC_O='-o $@'
3465 X86ASM_O='-o $@'
3466 LD_O='-o $@'
3467 LD_LIB='-l%'
3468 LD_PATH='-L'
3469 HOSTCC_C='-c'
3470 HOSTCC_E='-E -o $@'
3471 HOSTCC_O='-o $@'
3472 HOSTLD_O='-o $@'
3473 NVCC_C='-c'
3474 NVCC_O='-o $@'
3475
3476 host_extralibs='-lm'
3477 host_cflags_filter=echo
3478 host_ldflags_filter=echo
3479
3480 target_path='$(CURDIR)'
3481
3482 # since the object filename is not given with the -MM flag, the compiler
3483 # is only able to print the basename, and we must add the path ourselves
3484 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3485 DEPFLAGS='-MM'
3486
3487 mkdir -p ffbuild
3488
3489 # find source path
3490 if test -f configure; then
3491     source_path=.
3492 else
3493     source_path=$(cd $(dirname "$0"); pwd)
3494     case "$source_path" in
3495         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3496     esac
3497     test -e "$source_path/config.h" &&
3498         die "Out of tree builds are impossible with config.h in source dir."
3499 fi
3500
3501 for v in "$@"; do
3502     r=${v#*=}
3503     l=${v%"$r"}
3504     r=$(sh_quote "$r")
3505     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3506 done
3507
3508 find_things(){
3509     thing=$1
3510     pattern=$2
3511     file=$source_path/$3
3512     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3513 }
3514
3515 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3516 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3517 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3518 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3519 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3520 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3521 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3522 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3523 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3524
3525 find_things_extern(){
3526     thing=$1
3527     pattern=$2
3528     file=$source_path/$3
3529     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3530 }
3531
3532 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3533 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3534
3535 AVCODEC_COMPONENTS_LIST="
3536     $BSF_LIST
3537     $DECODER_LIST
3538     $ENCODER_LIST
3539     $HWACCEL_LIST
3540     $PARSER_LIST
3541 "
3542
3543 AVDEVICE_COMPONENTS_LIST="
3544     $INDEV_LIST
3545     $OUTDEV_LIST
3546 "
3547
3548 AVFILTER_COMPONENTS_LIST="
3549     $FILTER_LIST
3550 "
3551
3552 AVFORMAT_COMPONENTS_LIST="
3553     $DEMUXER_LIST
3554     $MUXER_LIST
3555     $PROTOCOL_LIST
3556 "
3557
3558 ALL_COMPONENTS="
3559     $AVCODEC_COMPONENTS_LIST
3560     $AVDEVICE_COMPONENTS_LIST
3561     $AVFILTER_COMPONENTS_LIST
3562     $AVFORMAT_COMPONENTS_LIST
3563 "
3564
3565 for n in $COMPONENT_LIST; do
3566     v=$(toupper ${n%s})_LIST
3567     eval enable \$$v
3568     eval ${n}_if_any="\$$v"
3569 done
3570
3571 enable $ARCH_EXT_LIST
3572
3573 die_unknown(){
3574     echo "Unknown option \"$1\"."
3575     echo "See $0 --help for available options."
3576     exit 1
3577 }
3578
3579 print_in_columns() {
3580     cols=$(expr $ncols / 24)
3581     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3582 }
3583
3584 show_list() {
3585     suffix=_$1
3586     shift
3587     echo $* | sed s/$suffix//g | print_in_columns
3588     exit 0
3589 }
3590
3591 rand_list(){
3592     IFS=', '
3593     set -- $*
3594     unset IFS
3595     for thing; do
3596         comp=${thing%:*}
3597         prob=${thing#$comp}
3598         prob=${prob#:}
3599         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3600         echo "prob ${prob:-0.5}"
3601         printf '%s\n' $comp
3602     done
3603 }
3604
3605 do_random(){
3606     action=$1
3607     shift
3608     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3609     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3610 }
3611
3612 for opt do
3613     optval="${opt#*=}"
3614     case "$opt" in
3615         --extra-ldflags=*)
3616             add_ldflags $optval
3617         ;;
3618         --extra-ldexeflags=*)
3619             add_ldexeflags $optval
3620         ;;
3621         --extra-ldsoflags=*)
3622             add_ldsoflags $optval
3623         ;;
3624         --extra-ldlibflags=*)
3625             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3626                  "removed in the future. Use --extra-ldsoflags instead."
3627             add_ldsoflags $optval
3628         ;;
3629         --extra-libs=*)
3630             add_extralibs $optval
3631         ;;
3632         --disable-devices)
3633             disable $INDEV_LIST $OUTDEV_LIST
3634         ;;
3635         --enable-debug=*)
3636             debuglevel="$optval"
3637         ;;
3638         --disable-programs)
3639             disable $PROGRAM_LIST
3640         ;;
3641         --disable-everything)
3642             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3643         ;;
3644         --disable-all)
3645             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3646             disable $LIBRARY_LIST $PROGRAM_LIST doc
3647             enable avutil
3648         ;;
3649         --enable-random|--disable-random)
3650             action=${opt%%-random}
3651             do_random ${action#--} $COMPONENT_LIST
3652         ;;
3653         --enable-random=*|--disable-random=*)
3654             action=${opt%%-random=*}
3655             do_random ${action#--} $optval
3656         ;;
3657         --enable-sdl)
3658             enable sdl2
3659         ;;
3660         --enable-*=*|--disable-*=*)
3661             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3662             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3663             eval list=\$$(toupper $thing)_LIST
3664             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3665             list=$(filter "$name" $list)
3666             [ "$list" = "" ] && warn "Option $opt did not match anything"
3667             $action $list
3668         ;;
3669         --enable-yasm|--disable-yasm)
3670             warn "The ${opt} option is only provided for compatibility and will be\n"\
3671                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3672             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3673         ;;
3674         --yasmexe=*)
3675             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3676                  "removed in the future. Use --x86asmexe instead."
3677             x86asmexe="$optval"
3678         ;;
3679         --enable-?*|--disable-?*)
3680             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3681             if is_in $option $COMPONENT_LIST; then
3682                 test $action = disable && action=unset
3683                 eval $action \$$(toupper ${option%s})_LIST
3684             elif is_in $option $CMDLINE_SELECT; then
3685                 $action $option
3686             else
3687                 die_unknown $opt
3688             fi
3689         ;;
3690         --list-*)
3691             NAME="${opt#--list-}"
3692             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3693             NAME=${NAME%s}
3694             eval show_list $NAME \$$(toupper $NAME)_LIST
3695         ;;
3696         --help|-h) show_help
3697         ;;
3698         --quiet|-q) quiet=yes
3699         ;;
3700         --fatal-warnings) enable fatal_warnings
3701         ;;
3702         --libfuzzer=*)
3703             libfuzzer_path="$optval"
3704         ;;
3705         *)
3706             optname="${opt%%=*}"
3707             optname="${optname#--}"
3708             optname=$(echo "$optname" | sed 's/-/_/g')
3709             if is_in $optname $CMDLINE_SET; then
3710                 eval $optname='$optval'
3711             elif is_in $optname $CMDLINE_APPEND; then
3712                 append $optname "$optval"
3713             else
3714                 die_unknown $opt
3715             fi
3716         ;;
3717     esac
3718 done
3719
3720 for e in $env; do
3721     eval "export $e"
3722 done
3723
3724 if disabled autodetect; then
3725
3726     # Unless iconv is explicitely disabled by the user, we still want to probe
3727     # for the iconv from the libc.
3728     disabled iconv || enable libc_iconv
3729
3730     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3731     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3732 fi
3733 # Mark specifically enabled, but normally autodetected libraries as requested.
3734 for lib in $AUTODETECT_LIBS; do
3735     enabled $lib && request $lib
3736 done
3737 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3738 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3739 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3740
3741 disabled logging && logfile=/dev/null
3742
3743 die_license_disabled() {
3744     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3745 }
3746
3747 die_license_disabled_gpl() {
3748     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3749 }
3750
3751 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3752 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3753
3754 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3755 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3756
3757 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3758
3759 enabled_all gnutls openssl &&
3760     die "GnuTLS and OpenSSL must not be enabled at the same time."
3761
3762 # Disable all the library-specific components if the library itself
3763 # is disabled, see AVCODEC_LIST and following _LIST variables.
3764
3765 disable_components(){
3766     disabled ${1} && disable $(
3767         eval components="\$$(toupper ${1})_COMPONENTS"
3768         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3769     )
3770 }
3771
3772 map 'disable_components $v' $LIBRARY_LIST
3773
3774 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3775 set >> $logfile
3776
3777 test -n "$valgrind" && toolchain="valgrind-memcheck"
3778
3779 enabled ossfuzz && {
3780     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3781     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3782 }
3783
3784 case "$toolchain" in
3785     *-asan)
3786         cc_default="${toolchain%-asan}"
3787         add_cflags  -fsanitize=address
3788         add_ldflags -fsanitize=address
3789     ;;
3790     *-msan)
3791         cc_default="${toolchain%-msan}"
3792         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3793         add_ldflags -fsanitize=memory
3794     ;;
3795     *-tsan)
3796         cc_default="${toolchain%-tsan}"
3797         add_cflags  -fsanitize=thread -fPIE
3798         add_ldflags -fsanitize=thread -pie
3799         case "$toolchain" in
3800             gcc-tsan)
3801                 add_cflags  -fPIC
3802                 add_ldflags -fPIC
3803                 ;;
3804         esac
3805     ;;
3806     *-usan)
3807         cc_default="${toolchain%-usan}"
3808         add_cflags  -fsanitize=undefined
3809         add_ldflags -fsanitize=undefined
3810     ;;
3811     valgrind-*)
3812         target_exec_default="valgrind"
3813         case "$toolchain" in
3814             valgrind-massif)
3815                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3816                 ;;
3817             valgrind-memcheck)
3818                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3819                 ;;
3820         esac
3821     ;;
3822     msvc)
3823         # Check whether the current MSVC version needs the C99 converter.
3824         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3825         # support enough of C99 to build ffmpeg. Default to the new
3826         # behaviour if the regexp was unable to match anything, since this
3827         # successfully parses the version number of existing supported
3828         # versions that require the converter (MSVC 2010 and 2012).
3829         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3830         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3831             cc_default="cl"
3832             cxx_default="cl"
3833         else
3834             cc_default="c99wrap cl"
3835             cxx_default="c99wrap cl"
3836         fi
3837         ld_default="$source_path/compat/windows/mslink"
3838         nm_default="dumpbin -symbols"
3839         ar_default="lib"
3840         case "$arch" in
3841         arm*)
3842             as_default="armasm"
3843             ;;
3844         esac
3845         target_os_default="win32"
3846         # Use a relative path for TMPDIR. This makes sure all the
3847         # ffconf temp files are written with a relative path, avoiding
3848         # issues with msys/win32 path conversion for MSVC parameters
3849         # such as -Fo<file> or -out:<file>.
3850         TMPDIR=.
3851     ;;
3852     icl)
3853         cc_default="icl"
3854         ld_default="xilink"
3855         nm_default="dumpbin -symbols"
3856         ar_default="xilib"
3857         target_os_default="win32"
3858         TMPDIR=.
3859     ;;
3860     gcov)
3861         add_cflags  -fprofile-arcs -ftest-coverage
3862         add_ldflags -fprofile-arcs -ftest-coverage
3863     ;;
3864     llvm-cov)
3865         add_cflags -fprofile-arcs -ftest-coverage
3866         add_ldflags --coverage
3867     ;;
3868     hardened)
3869         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3870         add_cflags   -fno-strict-overflow -fstack-protector-all
3871         add_ldflags  -Wl,-z,relro -Wl,-z,now
3872         add_cflags   -fPIE
3873         add_ldexeflags -fPIE -pie
3874     ;;
3875     ?*)
3876         die "Unknown toolchain $toolchain"
3877     ;;
3878 esac
3879
3880 test -n "$cross_prefix" && enable cross_compile
3881
3882 if enabled cross_compile; then
3883     test -n "$arch" && test -n "$target_os" ||
3884         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3885 fi
3886
3887 ar_default="${cross_prefix}${ar_default}"
3888 cc_default="${cross_prefix}${cc_default}"
3889 cxx_default="${cross_prefix}${cxx_default}"
3890 nm_default="${cross_prefix}${nm_default}"
3891 pkg_config_default="${cross_prefix}${pkg_config_default}"
3892 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3893     ranlib_default="${cross_prefix}${ranlib_default} -D"
3894 else
3895     ranlib_default="${cross_prefix}${ranlib_default}"
3896 fi
3897 strip_default="${cross_prefix}${strip_default}"
3898 windres_default="${cross_prefix}${windres_default}"
3899
3900 sysinclude_default="${sysroot}/usr/include"
3901
3902 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3903     target_exec target_os x86asmexe nvcc
3904 enabled cross_compile || host_cc_default=$cc
3905 set_default host_cc
3906
3907 pkg_config_fail_message=""
3908 if ! $pkg_config --version >/dev/null 2>&1; then
3909     warn "$pkg_config not found, library detection may fail."
3910     pkg_config=false
3911 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3912     pkg_config_fail_message="
3913 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3914 fi
3915
3916 if test $doxygen != $doxygen_default && \
3917   ! $doxygen --version >/dev/null 2>&1; then
3918     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3919 fi
3920
3921 exesuf() {
3922     case $1 in
3923         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3924     esac
3925 }
3926
3927 EXESUF=$(exesuf $target_os)
3928 HOSTEXESUF=$(exesuf $host_os)
3929
3930 # set temporary file name
3931 : ${TMPDIR:=$TEMPDIR}
3932 : ${TMPDIR:=$TMP}
3933 : ${TMPDIR:=/tmp}
3934
3935 if [ -n "$tempprefix" ] ; then
3936     mktemp(){
3937         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3938         echo "$tmpname"
3939         mkdir "$tmpname"
3940     }
3941 elif ! check_cmd mktemp -u XXXXXX; then
3942     # simple replacement for missing mktemp
3943     # NOT SAFE FOR GENERAL USE
3944     mktemp(){
3945         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3946         echo "$tmpname"
3947         mkdir "$tmpname"
3948     }
3949 fi
3950
3951 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3952     die "Unable to create temporary directory in $TMPDIR."
3953
3954 tmpfile(){
3955     tmp="${FFTMPDIR}/test"$2
3956     (set -C; exec > $tmp) 2> /dev/null ||
3957         die "Unable to create temporary file in $FFTMPDIR."
3958     eval $1=$tmp
3959 }
3960
3961 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3962 trap 'exit 2' INT
3963
3964 tmpfile TMPASM .asm
3965 tmpfile TMPC   .c
3966 tmpfile TMPCPP .cpp
3967 tmpfile TMPE   $EXESUF
3968 tmpfile TMPH   .h
3969 tmpfile TMPM   .m
3970 tmpfile TMPO   .o
3971 tmpfile TMPS   .S
3972 tmpfile TMPSH  .sh
3973 tmpfile TMPV   .ver
3974
3975 unset -f mktemp
3976
3977 chmod +x $TMPE
3978
3979 # make sure we can execute files in $TMPDIR
3980 cat > $TMPSH 2>> $logfile <<EOF
3981 #! /bin/sh
3982 EOF
3983 chmod +x $TMPSH >> $logfile 2>&1
3984 if ! $TMPSH >> $logfile 2>&1; then
3985     cat <<EOF
3986 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3987 variable to another directory and make sure that it is not mounted noexec.
3988 EOF
3989     die "Sanity test failed."
3990 fi
3991
3992 armasm_flags(){
3993     for flag; do
3994         case $flag in
3995             # Filter out MSVC cl.exe options from cflags that shouldn't
3996             # be passed to gas-preprocessor
3997             -M[TD]*)                                            ;;
3998             *)                  echo $flag                      ;;
3999         esac
4000    done
4001 }
4002
4003 ccc_flags(){
4004     for flag; do
4005         case $flag in
4006             -std=c99)           echo -c99                       ;;
4007             -mcpu=*)            echo -arch ${flag#*=}           ;;
4008             -mieee)             echo -ieee                      ;;
4009             -O*|-fast)          echo $flag                      ;;
4010             -fno-math-errno)    echo -assume nomath_errno       ;;
4011             -g)                 echo -g3                        ;;
4012             -Wall)              echo -msg_enable level2         ;;
4013             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
4014             -Wl,*)              echo $flag                      ;;
4015             -f*|-W*)                                            ;;
4016             *)                  echo $flag                      ;;
4017         esac
4018    done
4019 }
4020
4021 cparser_flags(){
4022     for flag; do
4023         case $flag in
4024             -Wno-switch)             echo -Wno-switch-enum ;;
4025             -Wno-format-zero-length) ;;
4026             -Wdisabled-optimization) ;;
4027             -Wno-pointer-sign)       echo -Wno-other ;;
4028             *)                       echo $flag ;;
4029         esac
4030     done
4031 }
4032
4033 msvc_common_flags(){
4034     for flag; do
4035         case $flag in
4036             # In addition to specifying certain flags under the compiler
4037             # specific filters, they must be specified here as well or else the
4038             # generic catch all at the bottom will print the original flag.
4039             -Wall)                ;;
4040             -Wextra)              ;;
4041             -std=c99)             ;;
4042             # Common flags
4043             -fomit-frame-pointer) ;;
4044             -g)                   echo -Z7 ;;
4045             -fno-math-errno)      ;;
4046             -fno-common)          ;;
4047             -fno-signed-zeros)    ;;
4048             -fPIC)                ;;
4049             -mthumb)              ;;
4050             -march=*)             ;;
4051             -lz)                  echo zlib.lib ;;
4052             -lx264)               echo libx264.lib ;;
4053             -lstdc++)             ;;
4054             -l*)                  echo ${flag#-l}.lib ;;
4055             -LARGEADDRESSAWARE)   echo $flag ;;
4056             -L*)                  echo -libpath:${flag#-L} ;;
4057             *)                    echo $flag ;;
4058         esac
4059     done
4060 }
4061
4062 msvc_flags(){
4063     msvc_common_flags "$@"
4064     for flag; do
4065         case $flag in
4066             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4067                                        -wd4554 ;;
4068             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4069                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4070                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4071                                        -wd4307 \
4072                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4073         esac
4074     done
4075 }
4076
4077 icl_flags(){
4078     msvc_common_flags "$@"
4079     for flag; do
4080         case $flag in
4081             # Despite what Intel's documentation says -Wall, which is supported
4082             # on Windows, does enable remarks so disable them here.
4083             -Wall)                echo $flag -Qdiag-disable:remark ;;
4084             -std=c99)             echo -Qstd=c99 ;;
4085             -flto)                echo -ipo ;;
4086         esac
4087     done
4088 }
4089
4090 icc_flags(){
4091     for flag; do
4092         case $flag in
4093             -flto)                echo -ipo ;;
4094             *)                    echo $flag ;;
4095         esac
4096     done
4097 }
4098
4099 pgi_flags(){
4100     for flag; do
4101         case $flag in
4102             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4103             -fomit-frame-pointer) echo -Mnoframe ;;
4104             -g)                   echo -gopt ;;
4105             *)                    echo $flag ;;
4106         esac
4107     done
4108 }
4109
4110 suncc_flags(){
4111     for flag; do
4112         case $flag in
4113             -march=*|-mcpu=*)
4114                 case "${flag#*=}" in
4115                     native)                   echo -xtarget=native       ;;
4116                     v9|niagara)               echo -xarch=sparc          ;;
4117                     ultrasparc)               echo -xarch=sparcvis       ;;
4118                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4119                     i586|pentium)             echo -xchip=pentium        ;;
4120                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4121                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4122                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4123                     pentium4*)          echo -xtarget=pentium4           ;;
4124                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4125                     *-sse3)             echo -xarch=sse3                 ;;
4126                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4127                     bonnell)                   echo -xarch=ssse3         ;;
4128                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4129                     westmere)                  echo -xtarget=westmere    ;;
4130                     silvermont)                echo -xarch=sse4_2        ;;
4131                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4132                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4133                                                echo -xarch=avx           ;;
4134                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4135                     btver1)                    echo -xarch=amdsse4a      ;;
4136                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4137                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4138                     k8|opteron|athlon64|athlon-fx)
4139                                                echo -xarch=sse2a         ;;
4140                     athlon*)                   echo -xarch=pentium_proa  ;;
4141                 esac
4142                 ;;
4143             -std=c99)             echo -xc99              ;;
4144             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4145             -fPIC)                echo -KPIC -xcode=pic32 ;;
4146             -W*,*)                echo $flag              ;;
4147             -f*-*|-W*|-mimpure-text)                      ;;
4148             -shared)              echo -G                 ;;
4149             *)                    echo $flag              ;;
4150         esac
4151     done
4152 }
4153
4154 tms470_flags(){
4155     for flag; do
4156         case $flag in
4157             -march=*|-mcpu=*)
4158                 case "${flag#*=}" in
4159                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4160                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4161                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4162                     armv6*|arm11*)          echo -mv=6   ;;
4163                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4164                                             echo -mv=5e  ;;
4165                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4166                 esac
4167                 ;;
4168             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4169             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4170             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4171             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4172             -msoft-float)   echo --float_support=vfplib       ;;
4173             -O[0-3]|-mf=*)  echo $flag                        ;;
4174             -g)             echo -g -mn                       ;;
4175             -pds=*)         echo $flag                        ;;
4176             -D*|-I*)        echo $flag                        ;;
4177             --gcc|--abi=*)  echo $flag                        ;;
4178             -me)            echo $flag                        ;;
4179         esac
4180     done
4181 }
4182
4183 probe_cc(){
4184     pfx=$1
4185     _cc=$2
4186     first=$3
4187
4188     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4189     unset _ld_o _ldflags _ld_lib _ld_path
4190     unset _depflags _DEPCMD _DEPFLAGS
4191     _flags_filter=echo
4192
4193     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4194         true # no-op to avoid reading stdin in following checks
4195     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4196         _type=llvm_gcc
4197         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4198         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4199         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4200         _cflags_speed='-O3'
4201         _cflags_size='-Os'
4202     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4203         _type=gcc
4204         gcc_version=$($_cc --version | head -n1)
4205         gcc_basever=$($_cc -dumpversion)
4206         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4207         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4208         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4209         case $gcc_basever in
4210             2) ;;
4211             2.*) ;;
4212             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4213         esac
4214         if [ "$first" = true ]; then
4215             case $gcc_basever in
4216                 4.2*)
4217                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4218             esac
4219         fi
4220         _cflags_speed='-O3'
4221         _cflags_size='-Os'
4222     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4223         _type=icc
4224         _ident=$($_cc --version | head -n1)
4225         _depflags='-MMD'
4226         _cflags_speed='-O3'
4227         _cflags_size='-Os'
4228         _cflags_noopt='-O1'
4229         _flags_filter=icc_flags
4230     elif $_cc -v 2>&1 | grep -q xlc; then
4231         _type=xlc
4232         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4233         _cflags_speed='-O5'
4234         _cflags_size='-O5 -qcompact'
4235     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4236         _type=ccc
4237         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4238         _DEPFLAGS='-M'
4239         _cflags_speed='-fast'
4240         _cflags_size='-O1'
4241         _flags_filter=ccc_flags
4242     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4243         test -d "$sysroot" || die "No valid sysroot specified."
4244         _type=armcc
4245         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4246         armcc_conf="$PWD/armcc.conf"
4247         $_cc --arm_linux_configure                 \
4248              --arm_linux_config_file="$armcc_conf" \
4249              --configure_sysroot="$sysroot"        \
4250              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4251              die "Error creating armcc configuration file."
4252         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4253         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4254         as_default="${cross_prefix}gcc"
4255         _depflags='-MMD'
4256         _cflags_speed='-O3'
4257         _cflags_size='-Os'
4258     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4259         _type=tms470
4260         _ident=$($_cc -version | head -n1 | tr -s ' ')
4261         _flags='--gcc --abi=eabi -me'
4262         _cc_e='-ppl -fe=$@'
4263         _cc_o='-fe=$@'
4264         _depflags='-ppa -ppd=$(@:.o=.d)'
4265         _cflags_speed='-O3 -mf=5'
4266         _cflags_size='-O3 -mf=2'
4267         _flags_filter=tms470_flags
4268     elif $_cc -v 2>&1 | grep -q clang; then
4269         _type=clang
4270         _ident=$($_cc --version 2>/dev/null | head -n1)
4271         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4272         _cflags_speed='-O3'
4273         _cflags_size='-Oz'
4274     elif $_cc -V 2>&1 | grep -q Sun; then
4275         _type=suncc
4276         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4277         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4278         _DEPFLAGS='-xM1 -xc99'
4279         _ldflags='-std=c99'
4280         _cflags_speed='-O5'
4281         _cflags_size='-O5 -xspace'
4282         _flags_filter=suncc_flags
4283     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4284         _type=pathscale
4285         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4286         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4287         _cflags_speed='-O2'
4288         _cflags_size='-Os'
4289         _flags_filter='filter_out -Wdisabled-optimization'
4290     elif $_cc -v 2>&1 | grep -q Open64; then
4291         _type=open64
4292         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4293         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4294         _cflags_speed='-O2'
4295         _cflags_size='-Os'
4296         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4297     elif $_cc -V 2>&1 | grep -q Portland; then
4298         _type=pgi
4299         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4300         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4301         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4302         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4303         _cflags_noopt="-O"
4304         _flags_filter=pgi_flags
4305     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4306         _type=armasm
4307         _ident=$($_cc | head -n1)
4308         # 4509: "This form of conditional instruction is deprecated"
4309         _flags="-nologo -ignore 4509"
4310         _flags_filter=armasm_flags
4311     elif $_cc 2>&1 | grep -q Intel; then
4312         _type=icl
4313         _ident=$($_cc 2>&1 | head -n1)
4314         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4315         # Not only is O3 broken on 13.x+ but it is slower on all previous
4316         # versions (tested) as well.
4317         _cflags_speed="-O2"
4318         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4319         if $_cc 2>&1 | grep -q Linker; then
4320             _ld_o='-out:$@'
4321         else
4322             _ld_o='-Fe$@'
4323         fi
4324         _cc_o='-Fo$@'
4325         _cc_e='-P'
4326         _flags_filter=icl_flags
4327         _ld_lib='lib%.a'
4328         _ld_path='-libpath:'
4329         # -Qdiag-error to make icl error when seeing certain unknown arguments
4330         _flags='-nologo -Qdiag-error:4044,10157'
4331         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4332         # with MSVC which enables it by default.
4333         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4334         disable stripping
4335     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4336         # lld can emulate multiple different linkers; in ms link.exe mode,
4337         # the -? parameter gives the help output which contains an identifyable
4338         # string, while it gives an error in other modes.
4339         _type=lld-link
4340         # The link.exe mode doesn't have a switch for getting the version,
4341         # but we can force it back to gnu mode and get the version from there.
4342         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4343         _ld_o='-out:$@'
4344         _flags_filter=msvc_flags
4345         _ld_lib='lib%.a'
4346         _ld_path='-libpath:'
4347     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4348         _type=msvc
4349         _ident=$($_cc 2>&1 | head -n1)
4350         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4351         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4352         _cflags_speed="-O2"
4353         _cflags_size="-O1"
4354         _cflags_noopt="-O1"
4355         if $_cc -nologo- 2>&1 | grep -q Linker; then
4356             _ld_o='-out:$@'
4357         else
4358             _ld_o='-Fe$@'
4359         fi
4360         _cc_o='-Fo$@'
4361         _cc_e='-P -Fi$@'
4362         _flags_filter=msvc_flags
4363         _ld_lib='lib%.a'
4364         _ld_path='-libpath:'
4365         _flags='-nologo'
4366         disable stripping
4367     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4368         _type=cparser
4369         _ident=$($_cc --version | head -n1)
4370         _depflags='-MMD'
4371         _cflags_speed='-O4'
4372         _cflags_size='-O2'
4373         _flags_filter=cparser_flags
4374     fi
4375
4376     eval ${pfx}_type=\$_type
4377     eval ${pfx}_ident=\$_ident
4378 }
4379
4380 set_ccvars(){
4381     eval ${1}_C=\${_cc_c-\${${1}_C}}
4382     eval ${1}_E=\${_cc_e-\${${1}_E}}
4383     eval ${1}_O=\${_cc_o-\${${1}_O}}
4384
4385     if [ -n "$_depflags" ]; then
4386         eval ${1}_DEPFLAGS=\$_depflags
4387     else
4388         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4389         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4390         eval DEP${1}FLAGS=\$_flags
4391     fi
4392 }
4393
4394 probe_cc cc "$cc" "true"
4395 cflags_filter=$_flags_filter
4396 cflags_speed=$_cflags_speed
4397 cflags_size=$_cflags_size
4398 cflags_noopt=$_cflags_noopt
4399 add_cflags $_flags $_cflags
4400 cc_ldflags=$_ldflags
4401 set_ccvars CC
4402 set_ccvars CXX
4403
4404 probe_cc hostcc "$host_cc"
4405 host_cflags_filter=$_flags_filter
4406 host_cflags_speed=$_cflags_speed
4407 add_host_cflags  $_flags $_cflags
4408 set_ccvars HOSTCC
4409
4410 test -n "$cc_type" && enable $cc_type ||
4411     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4412
4413 : ${as_default:=$cc}
4414 : ${objcc_default:=$cc}
4415 : ${dep_cc_default:=$cc}
4416 : ${ld_default:=$cc}
4417 : ${host_ld_default:=$host_cc}
4418 set_default ar as objcc dep_cc ld ln_s host_ld windres
4419
4420 probe_cc as "$as"
4421 asflags_filter=$_flags_filter
4422 add_asflags $_flags $_cflags
4423 set_ccvars AS
4424
4425 probe_cc objcc "$objcc"
4426 objcflags_filter=$_flags_filter
4427 add_objcflags $_flags $_cflags
4428 set_ccvars OBJC
4429
4430 probe_cc ld "$ld"
4431 ldflags_filter=$_flags_filter
4432 add_ldflags $_flags $_ldflags
4433 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4434 LD_O=${_ld_o-$LD_O}
4435 LD_LIB=${_ld_lib-$LD_LIB}
4436 LD_PATH=${_ld_path-$LD_PATH}
4437
4438 probe_cc hostld "$host_ld"
4439 host_ldflags_filter=$_flags_filter
4440 add_host_ldflags $_flags $_ldflags
4441 HOSTLD_O=${_ld_o-$HOSTLD_O}
4442
4443 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4444     probe_cc depcc "$dep_cc"
4445     CCDEP=${_DEPCMD:-$DEPCMD}
4446     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4447     DEPCCFLAGS=$_flags
4448 fi
4449
4450 if $ar 2>&1 | grep -q Microsoft; then
4451     arflags="-nologo"
4452     ar_o='-out:$@'
4453 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4454     arflags="rq"
4455     ar_o='$@'
4456 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4457     arflags='-Xany -r -c'
4458     ar_o='$@'
4459 elif $ar 2>&1 | grep -q "\[D\] "; then
4460     arflags="rcD"
4461     ar_o='$@'
4462 else
4463     arflags="rc"
4464     ar_o='$@'
4465 fi
4466
4467 add_cflags $extra_cflags
4468 add_cxxflags $extra_cxxflags
4469 add_objcflags $extra_objcflags
4470 add_asflags $extra_cflags
4471
4472 if test -n "$sysroot"; then
4473     case "$cc_type" in
4474         gcc|llvm_gcc|clang)
4475             add_cppflags --sysroot="$sysroot"
4476             add_ldflags --sysroot="$sysroot"
4477         ;;
4478         tms470)
4479             add_cppflags -I"$sysinclude"
4480             add_ldflags  --sysroot="$sysroot"
4481         ;;
4482     esac
4483 fi
4484
4485 if test "$cpu" = host; then
4486     enabled cross_compile &&
4487         die "--cpu=host makes no sense when cross-compiling."
4488
4489     case "$cc_type" in
4490         gcc|llvm_gcc)
4491             check_native(){
4492                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4493                 sed -n "/cc1.*$1=/{
4494                             s/.*$1=\\([^ ]*\\).*/\\1/
4495                             p
4496                             q
4497                         }" $TMPE
4498             }
4499             cpu=$(check_native -march || check_native -mcpu)
4500         ;;
4501         clang)
4502             check_native(){
4503                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4504                 sed -n "/cc1.*-target-cpu /{
4505                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4506                             p
4507                             q
4508                         }" $TMPE
4509             }
4510             cpu=$(check_native -march)
4511         ;;
4512     esac
4513
4514     test "${cpu:-host}" = host &&
4515         die "--cpu=host not supported with compiler $cc"
4516 fi
4517
4518 # Deal with common $arch aliases
4519 case "$arch" in
4520     aarch64|arm64)
4521         arch="aarch64"
4522     ;;
4523     arm*|iPad*|iPhone*)
4524         arch="arm"
4525     ;;
4526     mips*|IP*)
4527         case "$arch" in
4528         *el)
4529             add_cppflags -EL
4530             add_ldflags -EL
4531         ;;
4532         *eb)
4533             add_cppflags -EB
4534             add_ldflags -EB
4535         ;;
4536         esac
4537         arch="mips"
4538     ;;
4539     parisc*|hppa*)
4540         arch="parisc"
4541     ;;
4542     "Power Macintosh"|ppc*|powerpc*)
4543         arch="ppc"
4544     ;;
4545     s390|s390x)
4546         arch="s390"
4547     ;;
4548     sh4|sh)
4549         arch="sh4"
4550     ;;
4551     sun4*|sparc*)
4552         arch="sparc"
4553     ;;
4554     tilegx|tile-gx)
4555         arch="tilegx"
4556     ;;
4557     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4558         arch="x86"
4559     ;;
4560 esac
4561
4562 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4563 enable $arch
4564
4565 # Add processor-specific flags
4566 if enabled aarch64; then
4567
4568     case $cpu in
4569         armv*)
4570             cpuflags="-march=$cpu"
4571         ;;
4572         *)
4573             cpuflags="-mcpu=$cpu"
4574         ;;
4575     esac
4576
4577 elif enabled alpha; then
4578
4579     cpuflags="-mcpu=$cpu"
4580
4581 elif enabled arm; then
4582
4583     check_arm_arch() {
4584         check_cpp_condition stddef.h \
4585             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4586             $cpuflags
4587     }
4588
4589     probe_arm_arch() {
4590         if   check_arm_arch 4;        then echo armv4
4591         elif check_arm_arch 4T;       then echo armv4t
4592         elif check_arm_arch 5;        then echo armv5
4593         elif check_arm_arch 5E;       then echo armv5e
4594         elif check_arm_arch 5T;       then echo armv5t
4595         elif check_arm_arch 5TE;      then echo armv5te
4596         elif check_arm_arch 5TEJ;     then echo armv5te
4597         elif check_arm_arch 6;        then echo armv6
4598         elif check_arm_arch 6J;       then echo armv6j
4599         elif check_arm_arch 6K;       then echo armv6k
4600         elif check_arm_arch 6Z;       then echo armv6z
4601         elif check_arm_arch 6ZK;      then echo armv6zk
4602         elif check_arm_arch 6T2;      then echo armv6t2
4603         elif check_arm_arch 7;        then echo armv7
4604         elif check_arm_arch 7A  7_A;  then echo armv7-a
4605         elif check_arm_arch 7S;       then echo armv7-a
4606         elif check_arm_arch 7R  7_R;  then echo armv7-r
4607         elif check_arm_arch 7M  7_M;  then echo armv7-m
4608         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4609         elif check_arm_arch 8A  8_A;  then echo armv8-a
4610         fi
4611     }
4612
4613     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4614
4615     case $cpu in
4616         armv*)
4617             cpuflags="-march=$cpu"
4618             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4619         ;;
4620         *)
4621             cpuflags="-mcpu=$cpu"
4622             case $cpu in
4623                 cortex-a*)                               subarch=armv7a  ;;
4624                 cortex-r*)                               subarch=armv7r  ;;
4625                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4626                 arm11*)                                  subarch=armv6   ;;
4627                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4628                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4629                 *)                             subarch=$(probe_arm_arch) ;;
4630             esac
4631         ;;
4632     esac
4633
4634     case "$subarch" in
4635         armv5t*)    enable fast_clz                ;;
4636         armv[6-8]*)
4637             enable fast_clz
4638             disabled fast_unaligned || enable fast_unaligned
4639             ;;
4640     esac
4641
4642 elif enabled avr32; then
4643
4644     case $cpu in
4645         ap7[02]0[0-2])
4646             subarch="avr32_ap"
4647             cpuflags="-mpart=$cpu"
4648         ;;
4649         ap)
4650             subarch="avr32_ap"
4651             cpuflags="-march=$cpu"
4652         ;;
4653         uc3[ab]*)
4654             subarch="avr32_uc"
4655             cpuflags="-mcpu=$cpu"
4656         ;;
4657         uc)
4658             subarch="avr32_uc"
4659             cpuflags="-march=$cpu"
4660         ;;
4661     esac
4662
4663 elif enabled bfin; then
4664
4665     cpuflags="-mcpu=$cpu"
4666
4667 elif enabled mips; then
4668
4669     cpuflags="-march=$cpu"
4670
4671     if [ "$cpu" != "generic" ]; then
4672         disable mips32r2
4673         disable mips32r5
4674         disable mips64r2
4675         disable mips32r6
4676         disable mips64r6
4677         disable loongson2
4678         disable loongson3
4679
4680         case $cpu in
4681             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4682                 enable mips32r2
4683                 disable msa
4684             ;;
4685             p5600|i6400|p6600)
4686                 disable mipsdsp
4687                 disable mipsdspr2
4688             ;;
4689             loongson*)
4690                 enable loongson2
4691                 enable loongson3
4692                 enable local_aligned
4693                 enable simd_align_16
4694                 enable fast_64bit
4695                 enable fast_clz
4696                 enable fast_cmov
4697                 enable fast_unaligned
4698                 disable aligned_stack
4699                 disable mipsfpu
4700                 disable mipsdsp
4701                 disable mipsdspr2
4702                 case $cpu in
4703                     loongson3*)
4704                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4705                     ;;
4706                     loongson2e)
4707                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4708                     ;;
4709                     loongson2f)
4710                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4711                     ;;
4712                 esac
4713             ;;
4714             *)
4715                 # Unknown CPU. Disable everything.
4716                 warn "unknown CPU. Disabling all MIPS optimizations."
4717                 disable mipsfpu
4718                 disable mipsdsp
4719                 disable mipsdspr2
4720                 disable msa
4721                 disable mmi
4722             ;;
4723         esac
4724
4725         case $cpu in
4726             24kc)
4727                 disable mipsfpu
4728                 disable mipsdsp
4729                 disable mipsdspr2
4730             ;;
4731             24kf*)
4732                 disable mipsdsp
4733                 disable mipsdspr2
4734             ;;
4735             24kec|34kc|1004kc)
4736                 disable mipsfpu
4737                 disable mipsdspr2
4738             ;;
4739             24kef*|34kf*|1004kf*)
4740                 disable mipsdspr2
4741             ;;
4742             74kc)
4743                 disable mipsfpu
4744             ;;
4745             p5600)
4746                 enable mips32r5
4747                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4748             ;;
4749             i6400)
4750                 enable mips64r6
4751                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4752             ;;
4753             p6600)
4754                 enable mips64r6
4755                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4756             ;;
4757         esac
4758     else
4759         # We do not disable anything. Is up to the user to disable the unwanted features.
4760         warn 'generic cpu selected'
4761     fi
4762
4763 elif enabled ppc; then
4764
4765     disable ldbrx
4766
4767     case $(tolower $cpu) in
4768         601|ppc601|powerpc601)
4769             cpuflags="-mcpu=601"
4770             disable altivec
4771         ;;
4772         603*|ppc603*|powerpc603*)
4773             cpuflags="-mcpu=603"
4774             disable altivec
4775         ;;
4776         604*|ppc604*|powerpc604*)
4777             cpuflags="-mcpu=604"
4778             disable altivec
4779         ;;
4780         g3|75*|ppc75*|powerpc75*)
4781             cpuflags="-mcpu=750"
4782             disable altivec
4783         ;;
4784         g4|745*|ppc745*|powerpc745*)
4785             cpuflags="-mcpu=7450"
4786             disable vsx
4787         ;;
4788         74*|ppc74*|powerpc74*)
4789             cpuflags="-mcpu=7400"
4790             disable vsx
4791         ;;
4792         g5|970|ppc970|powerpc970)
4793             cpuflags="-mcpu=970"
4794             disable vsx
4795         ;;
4796         power[3-6]*)
4797             cpuflags="-mcpu=$cpu"
4798             disable vsx
4799         ;;
4800         power[7-8]*)
4801             cpuflags="-mcpu=$cpu"
4802         ;;
4803         cell)
4804             cpuflags="-mcpu=cell"
4805             enable ldbrx
4806             disable vsx
4807         ;;
4808         e500mc)
4809             cpuflags="-mcpu=e500mc"
4810             disable altivec
4811         ;;
4812         e500v2)
4813             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4814             disable altivec
4815             disable dcbzl
4816         ;;
4817         e500)
4818             cpuflags="-mcpu=8540 -mhard-float"
4819             disable altivec
4820             disable dcbzl
4821         ;;
4822     esac
4823
4824 elif enabled sparc; then
4825
4826     case $cpu in
4827         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4828             cpuflags="-mcpu=$cpu"
4829         ;;
4830         ultrasparc*|niagara[234])
4831             cpuflags="-mcpu=$cpu"
4832         ;;
4833     esac
4834
4835 elif enabled x86; then
4836
4837     case $cpu in
4838         i[345]86|pentium)
4839             cpuflags="-march=$cpu"
4840             disable i686
4841             disable mmx
4842         ;;
4843         # targets that do NOT support nopl and conditional mov (cmov)
4844         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4845             cpuflags="-march=$cpu"
4846             disable i686
4847         ;;
4848         # targets that do support nopl and conditional mov (cmov)
4849         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4850         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4851         |amdfam10|barcelona|b[dt]ver*|znver*)
4852             cpuflags="-march=$cpu"
4853             enable i686
4854             enable fast_cmov
4855         ;;
4856         # targets that do support conditional mov but on which it's slow
4857         pentium4|pentium4m|prescott|nocona)
4858             cpuflags="-march=$cpu"
4859             enable i686
4860             disable fast_cmov
4861         ;;
4862     esac
4863
4864 fi
4865
4866 if [ "$cpu" != generic ]; then
4867     add_cflags  $cpuflags
4868     add_asflags $cpuflags
4869     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4870 fi
4871
4872 # compiler sanity check
4873 check_exec <<EOF
4874 int main(void){ return 0; }
4875 EOF
4876 if test "$?" != 0; then
4877     echo "$cc is unable to create an executable file."
4878     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4879         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4880         echo "Only do this if you know what cross compiling means."
4881     fi
4882     die "C compiler test failed."
4883 fi
4884
4885 add_cppflags -D_ISOC99_SOURCE
4886 add_cxxflags -D__STDC_CONSTANT_MACROS
4887 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4888
4889 # some compilers silently accept -std=c11, so we also need to check that the
4890 # version macro is defined properly
4891 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4892     add_cflags -std=c11 ||
4893     check_cflags -std=c99
4894
4895 check_cppflags -D_FILE_OFFSET_BITS=64
4896 check_cppflags -D_LARGEFILE_SOURCE
4897
4898 add_host_cppflags -D_ISOC99_SOURCE
4899 check_host_cflags -std=c99
4900 check_host_cflags -Wall
4901 check_host_cflags $host_cflags_speed
4902
4903 check_64bit(){
4904     arch32=$1
4905     arch64=$2
4906     expr=$3
4907     check_code cc "" "int test[2*($expr) - 1]" &&
4908         subarch=$arch64 || subarch=$arch32
4909 }
4910
4911 case "$arch" in
4912     aarch64|alpha|ia64)
4913         spic=$shared
4914     ;;
4915     mips)
4916         check_64bit mips mips64 '_MIPS_SIM > 1'
4917         spic=$shared
4918     ;;
4919     parisc)
4920         check_64bit parisc parisc64 'sizeof(void *) > 4'
4921         spic=$shared
4922     ;;
4923     ppc)
4924         check_64bit ppc ppc64 'sizeof(void *) > 4'
4925         spic=$shared
4926     ;;
4927     s390)
4928         check_64bit s390 s390x 'sizeof(void *) > 4'
4929         spic=$shared
4930     ;;
4931     sparc)
4932         check_64bit sparc sparc64 'sizeof(void *) > 4'
4933         spic=$shared
4934     ;;
4935     x86)
4936         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4937         # Treat x32 as x64 for now. Note it also needs spic=$shared
4938         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4939             subarch=x86_64
4940         if test "$subarch" = "x86_64"; then
4941             spic=$shared
4942         fi
4943     ;;
4944     ppc)
4945         check_cc <<EOF && subarch="ppc64"
4946         int test[(int)sizeof(char*) - 7];
4947 EOF
4948     ;;
4949 esac
4950
4951 enable $subarch
4952 enabled spic && enable_weak pic
4953
4954 enabled x86_64 && objformat=elf64 || objformat="elf32"
4955
4956 # OS specific
4957 case $target_os in
4958     aix)
4959         SHFLAGS=-shared
4960         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4961         enabled shared && add_ldflags -Wl,-brtl
4962         ;;
4963     android)
4964         disable symver
4965         enable section_data_rel_ro
4966         SLIB_INSTALL_NAME='$(SLIBNAME)'
4967         SLIB_INSTALL_LINKS=
4968         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4969         ;;
4970     haiku)
4971         prefix_default="/boot/common"
4972         network_extralibs="-lnetwork"
4973         host_extralibs=
4974         ;;
4975     sunos)
4976         SHFLAGS='-shared -Wl,-h,$$(@F)'
4977         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4978         network_extralibs="-lsocket -lnsl"
4979         add_cppflags -D__EXTENSIONS__
4980         # When using suncc to build, the Solaris linker will mark
4981         # an executable with each instruction set encountered by
4982         # the Solaris assembler.  As our libraries contain their own
4983         # guards for processor-specific code, instead suppress
4984         # generation of the HWCAPS ELF section on Solaris x86 only.
4985         enabled_all suncc x86 &&
4986             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4987             add_ldflags -Wl,-M,mapfile
4988         nm_default='nm -P -g'
4989         version_script='-M'
4990         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4991         ;;
4992     netbsd)
4993         disable symver
4994         oss_indev_extralibs="-lossaudio"
4995         oss_outdev_extralibs="-lossaudio"
4996         enabled gcc || check_ldflags -Wl,-zmuldefs
4997         ;;
4998     openbsd|bitrig)
4999         disable symver
5000         SHFLAGS='-shared'
5001         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5002         SLIB_INSTALL_LINKS=
5003         oss_indev_extralibs="-lossaudio"
5004         oss_outdev_extralibs="-lossaudio"
5005         ;;
5006     dragonfly)
5007         disable symver
5008         ;;
5009     freebsd)
5010         ;;
5011     bsd/os)
5012         add_extralibs -lpoll -lgnugetopt
5013         strip="strip -d"
5014         ;;
5015     darwin)
5016         enabled ppc && add_asflags -force_cpusubtype_ALL
5017         install_name_dir_default='$(SHLIBDIR)'
5018         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5019         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5020         strip="${strip} -x"
5021         add_ldflags -Wl,-dynamic,-search_paths_first
5022         check_cflags -Werror=partial-availability
5023         SLIBSUF=".dylib"
5024         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5025         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5026         enabled x86_64 && objformat="macho64" || objformat="macho32"
5027         enabled_any pic shared x86_64 ||
5028             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5029         check_header dispatch/dispatch.h &&
5030             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5031         if test -n "$sysroot"; then
5032             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5033             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5034         fi
5035         version_script='-exported_symbols_list'
5036         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5037         ;;
5038     msys*)
5039         die "Native MSYS builds are discouraged, please use the MINGW environment."
5040         ;;
5041     mingw32*|mingw64*)
5042         target_os=mingw32
5043         LIBTARGET=i386
5044         if enabled x86_64; then
5045             LIBTARGET="i386:x86-64"
5046         fi
5047         if enabled shared; then
5048             # Cannot build both shared and static libs when using dllexport.
5049             disable static
5050         fi
5051         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5052         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5053         shlibdir_default="$bindir_default"
5054         SLIBPREF=""
5055         SLIBSUF=".dll"
5056         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5057         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5058         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5059         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5060         SLIB_INSTALL_LINKS=
5061         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5062         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5063         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5064         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5065         enabled x86_64 && objformat="win64" || objformat="win32"
5066         dlltool="${cross_prefix}dlltool"
5067         ranlib=:
5068         enable dos_paths
5069         check_ldflags -Wl,--nxcompat,--dynamicbase
5070         # Lets work around some stupidity in binutils.
5071         # ld will strip relocations from executables even though we need them
5072         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5073         # however ld then forgets what the entry point should be (oops) so we
5074         # have to manually (re)set it.
5075         if enabled x86_32; then
5076             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5077         elif enabled x86_64; then
5078             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5079             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5080             # Set image base >4GB for extra entropy with HEASLR
5081             add_ldexeflags -Wl,--image-base,0x140000000
5082             append SHFLAGS -Wl,--image-base,0x180000000
5083         fi
5084         ;;
5085     win32|win64)
5086         disable symver
5087         if enabled shared; then
5088             # Link to the import library instead of the normal static library
5089             # for shared libs.
5090             LD_LIB='%.lib'
5091             # Cannot build both shared and static libs with MSVC or icl.
5092             disable static
5093         fi
5094         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5095         shlibdir_default="$bindir_default"
5096         SLIBPREF=""
5097         SLIBSUF=".dll"
5098         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5099         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5100         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5101         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5102         SLIB_INSTALL_LINKS=
5103         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5104         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5105         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5106         enabled x86_64 && objformat="win64" || objformat="win32"
5107         ranlib=:
5108         enable dos_paths
5109         ;;
5110     cygwin*)
5111         target_os=cygwin
5112         shlibdir_default="$bindir_default"
5113         SLIBPREF="cyg"
5114         SLIBSUF=".dll"
5115         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5116         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5117         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5118         SLIB_INSTALL_LINKS=
5119         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5120         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5121         enabled x86_64 && objformat="win64" || objformat="win32"
5122         enable dos_paths
5123         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5124         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5125         ;;
5126     *-dos|freedos|opendos)
5127         network_extralibs="-lsocket"
5128         objformat="coff"
5129         enable dos_paths
5130         add_cppflags -U__STRICT_ANSI__
5131         ;;
5132     linux)
5133         enable section_data_rel_ro
5134         enabled_any arm aarch64 && enable_weak linux_perf
5135         ;;
5136     irix*)
5137         target_os=irix
5138         ranlib="echo ignoring ranlib"
5139         ;;
5140     os/2*)
5141         strip="lxlite -CS"
5142         striptype=""
5143         objformat="aout"
5144         add_cppflags -D_GNU_SOURCE
5145         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5146         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5147         LIBSUF="_s.a"
5148         SLIBPREF=""
5149         SLIBSUF=".dll"
5150         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5151         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5152         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5153             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5154             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5155             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5156             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5157         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5158             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5159         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5160         SLIB_INSTALL_LINKS=
5161         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5162         enable dos_paths
5163         enable_weak os2threads
5164         ;;
5165     gnu/kfreebsd)
5166         add_cppflags -D_BSD_SOURCE
5167         ;;
5168     gnu)
5169         ;;
5170     qnx)
5171         add_cppflags -D_QNX_SOURCE
5172         network_extralibs="-lsocket"
5173         ;;
5174     symbian)
5175         SLIBSUF=".dll"
5176         enable dos_paths
5177         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5178         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5179         add_ldflags -Wl,--target1-abs,--no-undefined \
5180                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5181                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5182         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5183                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5184                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5185         ;;
5186     osf1)
5187         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5188         ;;
5189     minix)
5190         ;;
5191     none)
5192         ;;
5193     *)
5194         die "Unknown OS '$target_os'."
5195         ;;
5196 esac
5197
5198 # test if creating links works
5199 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5200 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5201 mkdir "$link_dest"
5202 $ln_s "$link_dest" "$link_name"
5203 touch "$link_dest/test_file"
5204 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5205     # create link to source path
5206     [ -e src ] && rm src
5207     $ln_s "$source_path" src
5208     source_link=src
5209 else
5210     # creating directory links doesn't work
5211     # fall back to using the full source path
5212     source_link="$source_path"
5213 fi
5214 # cleanup
5215 rm -r "$link_dest"
5216 rm -r "$link_name"
5217
5218 # determine libc flavour
5219
5220 probe_libc(){
5221     pfx=$1
5222     pfx_no_=${pfx%_}
5223     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5224     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5225         eval ${pfx}libc_type=uclibc
5226         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5227     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5228         eval ${pfx}libc_type=glibc
5229         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5230     # MinGW headers can be installed on Cygwin, so check for newlib first.
5231     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5232         eval ${pfx}libc_type=newlib
5233         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5234     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5235     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5236         eval ${pfx}libc_type=mingw64
5237         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5238             add_compat msvcrt/snprintf.o
5239             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5240         fi
5241         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5242         eval test \$${pfx_no_}cc_type = "gcc" &&
5243             add_${pfx}cppflags -D__printf__=__gnu_printf__
5244     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5245          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5246         eval ${pfx}libc_type=mingw32
5247         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5248             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5249             die "ERROR: MinGW32 runtime version must be >= 3.15."
5250         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5251         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5252             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5253         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
5254             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5255         eval test \$${pfx_no_}cc_type = "gcc" &&
5256             add_${pfx}cppflags -D__printf__=__gnu_printf__
5257     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5258         eval ${pfx}libc_type=msvcrt
5259         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5260             if [ "$pfx" = host_ ]; then
5261                 add_host_cppflags -Dsnprintf=_snprintf
5262             else
5263                 add_compat strtod.o strtod=avpriv_strtod
5264                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5265                                              _snprintf=avpriv_snprintf  \
5266                                              vsnprintf=avpriv_vsnprintf
5267             fi
5268         fi
5269         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5270         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5271         # 0x601 by default unless something else is set by the user.
5272         # This can easily lead to us detecting functions only present
5273         # in such new versions and producing binaries requiring windows 7.0.
5274         # Therefore explicitly set the default to XP unless the user has
5275         # set something else on the command line.
5276         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5277         # family. For these cases, configure is free to use any functions
5278         # found in the SDK headers by default. (Alternatively, we could force
5279         # _WIN32_WINNT to 0x0602 in that case.)
5280         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5281             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5282 #ifdef WINAPI_FAMILY
5283 #include <winapifamily.h>
5284 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5285 #error not desktop
5286 #endif
5287 #endif
5288 EOF
5289         if [ "$pfx" = "" ]; then
5290             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5291             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5292         fi
5293     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5294         eval ${pfx}libc_type=klibc
5295     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5296         eval ${pfx}libc_type=bionic
5297     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5298         eval ${pfx}libc_type=solaris
5299         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5300     fi
5301     check_${pfx}cc <<EOF
5302 #include <time.h>
5303 void *v = localtime_r;
5304 EOF
5305 test "$?" != 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
5306 #include <time.h>
5307 void *v = localtime_r;
5308 EOF
5309
5310 }
5311
5312 probe_libc
5313 test -n "$libc_type" && enable libc_$libc_type
5314 probe_libc host_
5315 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5316
5317 # hacks for compiler/libc/os combinations
5318
5319 case $libc_type in
5320     bionic)
5321         add_compat strtod.o strtod=avpriv_strtod
5322         ;;
5323     glibc)
5324         if enabled tms470; then
5325             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5326             add_cppflags -D__USER_LABEL_PREFIX__=
5327             add_cppflags -D__builtin_memset=memset
5328             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5329             add_cflags   -pds=48    # incompatible redefinition of macro
5330         elif enabled ccc; then
5331             add_ldflags -Wl,-z,now  # calls to libots crash without this
5332         fi
5333         ;;
5334 esac
5335
5336 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5337     add_cppflags '-I\$(SRC_PATH)/compat/float'
5338
5339 esc(){
5340     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5341 }
5342
5343 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5344
5345 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5346
5347 set_default libdir
5348 : ${shlibdir_default:="$libdir"}
5349 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5350
5351 set_default $PATHS_LIST
5352 set_default nm
5353
5354 # we need to build at least one lib type
5355 if ! enabled_any static shared; then
5356     cat <<EOF
5357 At least one library type must be built.
5358 Specify --enable-static to build the static libraries or --enable-shared to
5359 build the shared libraries as well. To only build the shared libraries specify
5360 --disable-static in addition to --enable-shared.
5361 EOF
5362     exit 1
5363 fi
5364
5365 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5366
5367 enable_weak_pic() {
5368     disabled pic && return
5369     enable pic
5370     add_cppflags -DPIC
5371     case "$target_os" in
5372     mingw*|cygwin*)
5373         ;;
5374     *)
5375         add_cflags -fPIC
5376         ;;
5377     esac
5378     add_asflags  -fPIC
5379 }
5380
5381 enabled pic && enable_weak_pic
5382
5383 check_cc <<EOF || die "Symbol mangling check failed."
5384 int ff_extern;
5385 EOF
5386 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5387 extern_prefix=${sym%%ff_extern*}
5388
5389 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5390
5391 _restrict=
5392 for restrict_keyword in restrict __restrict__ __restrict; do
5393     check_cc <<EOF && _restrict=$restrict_keyword && break
5394 void foo(char * $restrict_keyword p);
5395 EOF
5396 done
5397
5398 check_cc <<EOF && enable pragma_deprecated
5399 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5400 EOF
5401
5402 check_cc <<EOF && enable attribute_packed
5403 struct { int x; } __attribute__((packed)) x;
5404 EOF
5405
5406 check_cc <<EOF && enable attribute_may_alias
5407 union { int x; } __attribute__((may_alias)) x;
5408 EOF
5409
5410 check_cc <<EOF || die "endian test failed"
5411 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5412 EOF
5413 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5414
5415 check_cc <<EOF && enable const_nan
5416 #include <math.h>
5417 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5418 EOF
5419
5420 if ! enabled ppc64 || enabled bigendian; then
5421     disable vsx
5422 fi
5423
5424 check_gas() {
5425     log "check_gas using '$as' as AS"
5426     # :vararg is used on aarch64, arm and ppc altivec
5427     check_as <<EOF || return 1
5428 .macro m n, y:vararg=0
5429 \n: .int \y
5430 .endm
5431 m x
5432 EOF
5433     # .altmacro is only used in arm asm
5434     ! enabled arm || check_as <<EOF || return 1
5435 .altmacro
5436 EOF
5437     enable gnu_as
5438     return 0
5439 }
5440
5441 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5442     nogas=:
5443     enabled_any arm aarch64 && nogas=die
5444     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5445     as_noop=-v
5446
5447     case $as_type in
5448         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5449         gcc)  gaspp_as_type=gas ;;
5450         *)    gaspp_as_type=$as_type ;;
5451     esac
5452
5453     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5454
5455     test "${as#*gas-preprocessor.pl}" != "$as" ||
5456     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5457         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5458
5459     if ! check_gas ; then
5460         as=${gas:=$as}
5461         check_gas || \
5462             $nogas "GNU assembler not found, install/update gas-preprocessor"
5463     fi
5464
5465     check_as <<EOF && enable as_func
5466 .func test
5467 .endfunc
5468 EOF
5469 fi
5470
5471 check_inline_asm inline_asm_labels '"1:\n"'
5472
5473 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5474
5475 if enabled aarch64; then
5476     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5477     # internal assembler in clang 3.3 does not support this instruction
5478     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5479     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5480
5481     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5482
5483 elif enabled alpha; then
5484
5485     check_cflags -mieee
5486
5487 elif enabled arm; then
5488
5489     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5490
5491     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5492 float func(float a, float b){ return a+b; }
5493 EOF
5494
5495     enabled thumb && check_cflags -mthumb || check_cflags -marm
5496
5497     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5498         enable vfp_args
5499     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5500         enable vfp_args
5501     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5502         case "${cross_prefix:-$cc}" in
5503             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5504             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5505 __asm__ (".eabi_attribute 28, 1");
5506 int main(void) { return 0; }
5507 EOF
5508         esac
5509         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5510     fi
5511
5512     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5513     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5514     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5515     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5516     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5517     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5518     enabled setend  && check_insn setend  'setend be'
5519
5520     [ $target_os = linux ] || [ $target_os = android ] ||
5521         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5522             $ARCH_EXT_LIST_ARM
5523
5524     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5525
5526     check_as <<EOF && enable as_arch_directive
5527 .arch armv7-a
5528 EOF
5529     check_as <<EOF && enable as_fpu_directive
5530 .fpu neon
5531 EOF
5532
5533     # llvm's integrated assembler supports .object_arch from llvm 3.5
5534     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5535         check_as <<EOF && enable as_object_arch
5536 .object_arch armv4
5537 EOF
5538
5539     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5540
5541 elif enabled mips; then
5542
5543     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5544     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5545     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5546
5547     # Enable minimum ISA based on selected options
5548     if enabled mips64; then
5549         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5550         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5551         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5552     else
5553         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5554         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5555         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5556         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5557     fi
5558
5559     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5560     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5561     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5562     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5563     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5564
5565     if enabled bigendian && enabled msa; then
5566         disable msa
5567     fi
5568
5569 elif enabled parisc; then
5570
5571     if enabled gcc; then
5572         case $($cc -dumpversion) in
5573             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5574         esac
5575     fi
5576
5577 elif enabled ppc; then
5578
5579     enable local_aligned
5580
5581     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5582     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5583     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5584     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5585
5586     if enabled altivec; then
5587         check_cflags -maltivec -mabi=altivec
5588
5589         # check if our compiler supports Motorola AltiVec C API
5590         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
5591                                  vector signed int v2 = (vector signed int) { 1 };
5592                                  v1 = vec_add(v1, v2);" ||
5593             disable altivec
5594
5595         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5596     fi
5597
5598     if enabled vsx; then
5599         check_cflags -mvsx &&
5600         check_code cc altivec.h "int v[4] = { 0 };
5601                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
5602             disable vsx
5603     fi
5604
5605     if enabled power8; then
5606         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5607     fi
5608
5609 elif enabled x86; then
5610
5611     check_builtin rdtsc    intrin.h   "__rdtsc()"
5612     check_builtin mm_empty mmintrin.h "_mm_empty()"
5613
5614     enable local_aligned
5615
5616     # check whether EBP is available on x86
5617     # As 'i' is stored on the stack, this program will crash
5618     # if the base pointer is used to access it because the
5619     # base pointer is cleared in the inline assembly code.
5620     check_exec_crash <<EOF && enable ebp_available
5621 volatile int i=0;
5622 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5623 return i;
5624 EOF
5625
5626     # check whether EBX is available on x86
5627     check_inline_asm ebx_available '""::"b"(0)' &&
5628         check_inline_asm ebx_available '"":::"%ebx"'
5629
5630     # check whether xmm clobbers are supported
5631     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5632
5633     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5634         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5635
5636     # check whether binutils is new enough to compile SSSE3/MMXEXT
5637     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5638     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5639
5640     probe_x86asm(){
5641         x86asmexe_probe=$1
5642         if check_cmd $x86asmexe_probe -v; then
5643             x86asmexe=$x86asmexe_probe
5644             x86asm_type=nasm
5645             x86asm_debug="-g -F dwarf"
5646             X86ASMDEP=
5647             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5648         elif check_cmd $x86asmexe_probe --version; then
5649             x86asmexe=$x86asmexe_probe
5650             x86asm_type=yasm
5651             x86asm_debug="-g dwarf2"
5652             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5653             X86ASM_DEPFLAGS=
5654         fi
5655         check_x86asm "movbe ecx, [5]" && enable x86asm
5656     }
5657
5658     if ! disabled_any asm mmx x86asm; then
5659         disable x86asm
5660         for program in $x86asmexe nasm yasm; do
5661             probe_x86asm $program && break
5662         done
5663         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5664         X86ASMFLAGS="-f $objformat"
5665         enabled pic               && append X86ASMFLAGS "-DPIC"
5666         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5667         case "$objformat" in
5668             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5669         esac
5670
5671         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5672         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5673         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5674         check_x86asm "CPU amdnop" || disable cpunop
5675     fi
5676
5677     case "$cpu" in
5678         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5679             disable fast_clz
5680         ;;
5681     esac
5682
5683 fi
5684
5685 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5686
5687 check_ldflags -Wl,--as-needed
5688 check_ldflags -Wl,-z,noexecstack
5689
5690 if ! disabled network; then
5691     check_func getaddrinfo $network_extralibs
5692     check_func inet_aton $network_extralibs
5693
5694     check_type netdb.h "struct addrinfo"
5695     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5696     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5697     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5698     check_type poll.h "struct pollfd"
5699     check_type netinet/sctp.h "struct sctp_event_subscribe"
5700     check_struct "sys/socket.h" "struct msghdr" msg_flags
5701     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5702     check_type netinet/in.h "struct sockaddr_in6"
5703     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5704     check_type "sys/types.h sys/socket.h" socklen_t
5705
5706     # Prefer arpa/inet.h over winsock2
5707     if check_header arpa/inet.h ; then
5708         check_func closesocket
5709     elif check_header winsock2.h ; then
5710         check_func_headers winsock2.h closesocket -lws2 &&
5711             network_extralibs="-lws2" ||
5712         { check_func_headers winsock2.h closesocket -lws2_32 &&
5713             network_extralibs="-lws2_32"; } || disable winsock2_h network
5714         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5715
5716         check_type ws2tcpip.h socklen_t
5717         check_type ws2tcpip.h "struct addrinfo"
5718         check_type ws2tcpip.h "struct group_source_req"
5719         check_type ws2tcpip.h "struct ip_mreq_source"
5720         check_type ws2tcpip.h "struct ipv6_mreq"
5721         check_type winsock2.h "struct pollfd"
5722         check_struct winsock2.h "struct sockaddr" sa_len
5723         check_type ws2tcpip.h "struct sockaddr_in6"
5724         check_type ws2tcpip.h "struct sockaddr_storage"
5725     else
5726         disable network
5727     fi
5728 fi
5729
5730 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5731 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5732 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5733 check_builtin sarestart signal.h "SA_RESTART"
5734 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5735 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5736 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5737 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5738
5739 case "$custom_allocator" in
5740     jemalloc)
5741         # jemalloc by default does not use a prefix
5742         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5743     ;;
5744     tcmalloc)
5745         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5746         malloc_prefix=tc_
5747     ;;
5748 esac
5749
5750 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5751 check_func  ${malloc_prefix}memalign            && enable memalign
5752 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5753
5754 check_func  access
5755 check_func_headers stdlib.h arc4random
5756 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5757 check_func  fcntl
5758 check_func  fork
5759 check_func  gethrtime
5760 check_func  getopt
5761 check_func  getrusage
5762 check_func  gettimeofday
5763 check_func  isatty
5764 check_func  mach_absolute_time
5765 check_func  mkstemp
5766 check_func  mmap
5767 check_func  mprotect
5768 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5769 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5770 check_func  sched_getaffinity
5771 check_func  setrlimit
5772 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5773 check_func  strerror_r
5774 check_func  sysconf
5775 check_func  sysctl
5776 check_func  usleep
5777
5778 check_func_headers conio.h kbhit
5779 check_func_headers io.h setmode
5780 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5781 check_func_headers stdlib.h getenv
5782 check_func_headers sys/stat.h lstat
5783
5784 check_func_headers windows.h GetProcessAffinityMask
5785 check_func_headers windows.h GetProcessTimes
5786 check_func_headers windows.h GetSystemTimeAsFileTime
5787 check_func_headers windows.h LoadLibrary
5788 check_func_headers windows.h MapViewOfFile
5789 check_func_headers windows.h PeekNamedPipe
5790 check_func_headers windows.h SetConsoleTextAttribute
5791 check_func_headers windows.h SetConsoleCtrlHandler
5792 check_func_headers windows.h Sleep
5793 check_func_headers windows.h VirtualAlloc
5794 check_struct windows.h "CONDITION_VARIABLE" Ptr
5795 check_func_headers glob.h glob
5796 enabled xlib &&
5797     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5798
5799 check_header d3d11.h
5800 check_header direct.h
5801 check_header dirent.h
5802 check_header dlfcn.h
5803 check_header dxgidebug.h
5804 check_header dxva.h
5805 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5806 check_header io.h
5807 check_header libcrystalhd/libcrystalhd_if.h
5808 check_header mach/mach_time.h
5809 check_header malloc.h
5810 check_header net/udplite.h
5811 check_header poll.h
5812 check_header sys/mman.h
5813 check_header sys/param.h
5814 check_header sys/resource.h
5815 check_header sys/select.h
5816 check_header sys/time.h
5817 check_header sys/un.h
5818 check_header termios.h
5819 check_header unistd.h
5820 check_header valgrind/valgrind.h
5821 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5822 check_header windows.h
5823 check_header X11/extensions/XvMClib.h
5824 check_header asm/types.h
5825
5826 # it seems there are versions of clang in some distros that try to use the
5827 # gcc headers, which explodes for stdatomic
5828 # so we also check that atomics actually work here
5829 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5830
5831 check_lib advapi32 "windows.h"            RegCloseKey          -ladvapi32
5832 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5833 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5834 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5835 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5836
5837 enabled appkit       && check_apple_framework AppKit
5838 enabled audiotoolbox && check_apple_framework AudioToolbox
5839 enabled avfoundation && check_apple_framework AVFoundation
5840 enabled coreimage    && check_apple_framework CoreImage
5841 enabled videotoolbox && check_apple_framework VideoToolbox
5842
5843 check_apple_framework CoreFoundation
5844 check_apple_framework CoreMedia
5845 check_apple_framework CoreVideo
5846
5847 enabled avfoundation && {
5848     disable coregraphics applicationservices
5849     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5850     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5851
5852 enabled videotoolbox && {
5853     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5854     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5855 }
5856
5857 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5858
5859 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5860 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5861 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5862 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5863 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5864
5865 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5866 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5867 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5868 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5869 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5870 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5871 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5872 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5873 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5874
5875 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5876
5877 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5878
5879 if ! disabled w32threads && ! enabled pthreads; then
5880     check_func_headers "windows.h process.h" _beginthreadex &&
5881         enable w32threads || disable w32threads
5882     if ! enabled w32threads && enabled winrt; then
5883         check_func_headers "windows.h" CreateThread &&
5884             enable w32threads || disable w32threads
5885     fi
5886 fi
5887
5888 # check for some common methods of building with pthread support
5889 # do this before the optional library checks as some of them require pthreads
5890 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5891     if check_lib pthreads pthread.h pthread_join   -pthread &&
5892        check_lib pthreads pthread.h pthread_create -pthread; then
5893         add_cflags -pthread
5894     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5895          check_lib pthreads pthread.h pthread_create -pthreads; then
5896         add_cflags -pthreads
5897     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5898          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5899         add_cflags -ldl -pthread
5900     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5901          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5902         :
5903     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5904          check_lib pthreads pthread.h pthread_create -lpthread; then
5905         :
5906     elif check_func pthread_join && check_func pthread_create; then
5907         enable pthreads
5908     fi
5909     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5910 fi
5911
5912
5913 if enabled pthreads; then
5914   check_func pthread_cancel $pthreads_extralibs
5915 fi
5916
5917 enabled pthreads &&
5918     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5919
5920 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5921 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5922 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5923
5924 # On some systems dynamic loading requires no extra linker flags
5925 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5926
5927 check_lib libm math.h sin -lm
5928
5929 atan2f_args=2
5930 copysign_args=2
5931 hypot_args=2
5932 ldexpf_args=2
5933 powf_args=2
5934
5935 for func in $MATH_FUNCS; do
5936     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5937 done
5938
5939 for func in $COMPLEX_FUNCS; do
5940     eval check_complexfunc $func \${${func}_args:-1}
5941 done
5942
5943 # these are off by default, so fail if requested and not available
5944 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5945 enabled cuvid             && { enabled cuda ||
5946                                die "ERROR: CUVID requires CUDA"; }
5947 enabled nvdec             && { enabled cuda ||
5948                                die "ERROR: NVDEC hwaccel requires CUDA"; }
5949 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5950 enabled decklink          && { require_header DeckLinkAPI.h &&
5951                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5952 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5953 enabled frei0r            && require_header frei0r.h
5954 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5955 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5956 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5957 enabled ladspa            && require_header ladspa.h
5958 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5959 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5960 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5961 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5962 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5963                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5964                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5965 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5966 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5967 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5968 enabled libfdk_aac        && { use_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5969                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5970                                  warn "using libfdk without pkg-config"; } }
5971 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"
5972 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5973 enabled fontconfig        && enable libfontconfig
5974 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
5975 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5976 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
5977 enabled libgme            && { use_pkg_config libgme libgme gme/gme.h gme_new_emu ||
5978                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5979 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5980                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5981                                done || die "ERROR: libgsm not found"; }
5982 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
5983 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5984 # While it may appear that require is being used as a pkg-config
5985 # fallback for libmfx, it is actually being used to detect a different
5986 # installation route altogether.  If libmfx is installed via the Intel
5987 # Media SDK or Intel Media Server Studio, these don't come with
5988 # pkg-config support.  Instead, users should make sure that the build
5989 # can find the libraries and headers through other means.
5990 enabled libmfx            && { use_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
5991                                { require libmfx "mfx/mfxvideo.h" MFXInit "-llibmfx $advapi32_extralibs" && warn "using libmfx without pkg-config"; } }
5992 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
5993 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5994 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
5995 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5996                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5997                                die "ERROR: libnpp not found"; }
5998 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5999 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6000 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6001                                { use_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6002                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6003                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6004 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6005 enabled libopenjpeg       && { use_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6006                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6007 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6008 enabled libopus           && {
6009     enabled libopus_decoder && {
6010         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6011     }
6012     enabled libopus_encoder && {
6013         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6014     }
6015 }
6016 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6017 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6018 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6019 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6020 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6021 enabled libsmbclient      && { use_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6022                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6023 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6024 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6025 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6026 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
6027 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6028 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6029 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6030                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6031                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6032 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6033 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6034 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
6035 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6036 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6037                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6038
6039 enabled libvpx            && {
6040     enabled libvpx_vp8_decoder && {
6041         use_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6042             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
6043                 die "ERROR: libvpx decoder version must be >=0.9.1";
6044     }
6045     enabled libvpx_vp8_encoder && {
6046         use_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6047             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
6048                 die "ERROR: libvpx encoder version must be >=0.9.7";
6049     }
6050     enabled libvpx_vp9_decoder && {
6051         use_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6052             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
6053     }
6054     enabled libvpx_vp9_encoder && {
6055         use_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6056             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6057     }
6058     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6059         die "libvpx enabled but no supported decoders found"
6060     fi
6061 }
6062
6063 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6064 enabled libwebp           && {
6065     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6066     enabled libwebp_anim_encoder && use_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6067 enabled libx264           && { use_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6068                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6069                                  warn "using libx264 without pkg-config"; } } &&
6070                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6071                              { check_cpp_condition x264.h "X264_MPEG2" &&
6072                                enable libx262; }
6073 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6074                              require_cpp_condition x265.h "X265_BUILD >= 68"
6075 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6076 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6077 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
6078 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6079 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6080                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6081                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6082 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6083 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6084 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6085                                { ! enabled cross_compile &&
6086                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6087                                  add_ldflags -L/opt/vc/lib/ &&
6088                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6089                                die "ERROR: mmal not found" &&
6090                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6091 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6092                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6093                                die "ERROR: openal not found"; } &&
6094                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6095                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6096 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6097                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6098                                die "ERROR: opencl not found"; } &&
6099                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6100                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6101                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6102 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6103                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6104                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6105                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6106                                die "ERROR: opengl not found."
6107                              }
6108 enabled omx               && require_header OMX_Core.h
6109 enabled omx_rpi           && { check_header OMX_Core.h ||
6110                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6111                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6112 enabled openssl           && { use_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6113                                use_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6114                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6115                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6116                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6117                                die "ERROR: openssl not found"; }
6118 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
6119                                  die "ERROR : Rockchip MPP was not found."; } &&
6120                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
6121                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
6122                                { enabled libdrm ||
6123                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6124                              }
6125
6126 if enabled gcrypt; then
6127     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6128     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6129         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6130         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6131         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6132             die "ERROR: gcrypt not found"
6133         add_cflags $gcrypt_cflags
6134     else
6135         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6136     fi
6137 fi
6138
6139 if enabled sdl2; then
6140     SDL2_CONFIG="${cross_prefix}sdl2-config"
6141     if check_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6142         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6143             disable sdl2
6144     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6145         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6146         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6147         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6148         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6149         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6150             enable sdl2
6151     fi
6152     if test $target_os = "mingw32"; then
6153         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6154     fi
6155 fi
6156
6157 if enabled decklink; then
6158     case $target_os in
6159         mingw32*|mingw64*|win32|win64)
6160             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6161             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6162             ;;
6163     esac
6164 fi
6165
6166 enabled securetransport &&
6167     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6168     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6169         disable securetransport
6170
6171 enabled schannel &&
6172     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6173     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6174     schannel_extralibs="-lsecur32" ||
6175         disable schannel
6176
6177 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6178 enabled makeinfo \
6179     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6180     && enable makeinfo_html || disable makeinfo_html
6181 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6182 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6183 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6184 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6185
6186 # check V4L2 codecs available in the API
6187 check_header linux/fb.h
6188 check_header linux/videodev2.h
6189 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6190 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6191 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6192 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6193 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6194 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6195 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6196 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6197 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6198 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6199 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6200
6201 check_header sys/videoio.h
6202 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
6203
6204 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6205 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6206 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6207 # w32api 3.12 had it defined wrong
6208 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6209
6210 check_type "dshow.h" IBaseFilter
6211
6212 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6213 { check_header dev/bktr/ioctl_meteor.h &&
6214   check_header dev/bktr/ioctl_bt848.h; } ||
6215 { check_header machine/ioctl_meteor.h &&
6216   check_header machine/ioctl_bt848.h; } ||
6217 { check_header dev/video/meteor/ioctl_meteor.h &&
6218   check_header dev/video/bktr/ioctl_bt848.h; } ||
6219 check_header dev/ic/bt8xx.h
6220
6221 if check_struct sys/soundcard.h audio_buf_info bytes; then
6222     enable_sanitized sys/soundcard.h
6223 else
6224     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_sanitized sys/soundcard.h
6225     #include <sys/soundcard.h>
6226     audio_buf_info abc;
6227 EOF
6228 fi
6229 check_header soundcard.h
6230
6231 enabled alsa && use_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6232     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6233
6234 enabled libjack &&
6235     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
6236
6237 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6238
6239 if enabled libcdio; then
6240     use_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6241     use_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6242     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6243     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6244     die "ERROR: No usable libcdio/cdparanoia found"
6245 fi
6246
6247 enabled libxcb && use_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6248     disable libxcb_shm libxcb_shape libxcb_xfixes
6249
6250 if enabled libxcb; then
6251     enabled libxcb_shm    && use_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6252     enabled libxcb_shape  && use_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6253     enabled libxcb_xfixes && use_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6254 fi
6255
6256 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6257
6258 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6259 # the desktop api partition
6260 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6261 #ifdef WINAPI_FAMILY
6262 #include <winapifamily.h>
6263 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6264 #error desktop, not uwp
6265 #else
6266 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6267 #endif
6268 #else
6269 #error no family set
6270 #endif
6271 EOF
6272
6273 enabled vaapi &&
6274     check_lib vaapi va/va.h vaInitialize -lva
6275
6276 enabled vaapi &&
6277     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6278     disable vaapi
6279
6280 enabled vaapi &&
6281     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6282
6283 enabled vaapi &&
6284     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6285
6286 enabled vaapi &&
6287     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6288     enable vaapi_1
6289
6290 enabled vdpau &&
6291     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6292     disable vdpau
6293
6294 enabled vdpau &&
6295     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6296
6297 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6298
6299 if enabled x86; then
6300     case $target_os in
6301         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6302             ;;
6303         *)
6304             disable cuda cuvid nvdec nvenc
6305             ;;
6306     esac
6307 else
6308     disable cuda cuvid nvdec nvenc
6309 fi
6310
6311 enabled nvenc &&
6312     check_cc -I$source_path <<EOF || disable nvenc
6313 #include "compat/nvenc/nvEncodeAPI.h"
6314 NV_ENCODE_API_FUNCTION_LIST flist;
6315 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6316 int main(void) { return 0; }
6317 EOF
6318
6319 # Funny iconv installations are not unusual, so check it after all flags have been set
6320 if enabled libc_iconv; then
6321     check_func_headers iconv.h iconv
6322 elif enabled iconv; then
6323     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6324 fi
6325
6326 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6327
6328 # add some useful compiler flags if supported
6329 check_cflags -Wdeclaration-after-statement
6330 check_cflags -Wall
6331 check_cflags -Wdisabled-optimization
6332 check_cflags -Wpointer-arith
6333 check_cflags -Wredundant-decls
6334 check_cflags -Wwrite-strings
6335 check_cflags -Wtype-limits
6336 check_cflags -Wundef
6337 check_cflags -Wmissing-prototypes
6338 check_cflags -Wno-pointer-to-int-cast
6339 check_cflags -Wstrict-prototypes
6340 check_cflags -Wempty-body
6341
6342 if enabled extra_warnings; then
6343     check_cflags -Wcast-qual
6344     check_cflags -Wextra
6345     check_cflags -Wpedantic
6346 fi
6347
6348 check_disable_warning(){
6349     warning_flag=-W${1#-Wno-}
6350     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6351 }
6352
6353 test_cflags -Werror=unused-command-line-argument &&
6354     append unknown_warning_flags "-Werror=unused-command-line-argument"
6355 test_cflags -Werror=unknown-warning-option &&
6356     append unknown_warning_flags "-Werror=unknown-warning-option"
6357
6358 check_disable_warning -Wno-parentheses
6359 check_disable_warning -Wno-switch
6360 check_disable_warning -Wno-format-zero-length
6361 check_disable_warning -Wno-pointer-sign
6362 check_disable_warning -Wno-unused-const-variable
6363 check_disable_warning -Wno-bool-operation
6364
6365 check_disable_warning_headers(){
6366     warning_flag=-W${1#-Wno-}
6367     test_cflags $warning_flag && add_cflags_headers $1
6368 }
6369
6370 check_disable_warning_headers -Wno-deprecated-declarations
6371 check_disable_warning_headers -Wno-unused-variable
6372
6373 check_cc <<EOF && enable blocks_extension
6374 void (^block)(void);
6375 EOF
6376
6377 # add some linker flags
6378 check_ldflags -Wl,--warn-common
6379 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6380 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
6381 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6382
6383 # add some strip flags
6384 check_stripflags -x
6385
6386 enabled neon_clobber_test &&
6387     check_ldflags -Wl,--wrap,avcodec_open2              \
6388                   -Wl,--wrap,avcodec_decode_audio4      \
6389                   -Wl,--wrap,avcodec_decode_video2      \
6390                   -Wl,--wrap,avcodec_decode_subtitle2   \
6391                   -Wl,--wrap,avcodec_encode_audio2      \
6392                   -Wl,--wrap,avcodec_encode_video2      \
6393                   -Wl,--wrap,avcodec_encode_subtitle    \
6394                   -Wl,--wrap,avcodec_send_packet        \
6395                   -Wl,--wrap,avcodec_receive_packet     \
6396                   -Wl,--wrap,avcodec_send_frame         \
6397                   -Wl,--wrap,avcodec_receive_frame      \
6398                   -Wl,--wrap,swr_convert                \
6399                   -Wl,--wrap,avresample_convert ||
6400     disable neon_clobber_test
6401
6402 enabled xmm_clobber_test &&
6403     check_ldflags -Wl,--wrap,avcodec_open2              \
6404                   -Wl,--wrap,avcodec_decode_audio4      \
6405                   -Wl,--wrap,avcodec_decode_video2      \
6406                   -Wl,--wrap,avcodec_decode_subtitle2   \
6407                   -Wl,--wrap,avcodec_encode_audio2      \
6408                   -Wl,--wrap,avcodec_encode_video2      \
6409                   -Wl,--wrap,avcodec_encode_subtitle    \
6410                   -Wl,--wrap,avcodec_send_packet        \
6411                   -Wl,--wrap,avcodec_receive_packet     \
6412                   -Wl,--wrap,avcodec_send_frame         \
6413                   -Wl,--wrap,avcodec_receive_frame      \
6414                   -Wl,--wrap,swr_convert                \
6415                   -Wl,--wrap,avresample_convert         \
6416                   -Wl,--wrap,sws_scale ||
6417     disable xmm_clobber_test
6418
6419 check_ld "cc" <<EOF && enable proper_dce
6420 extern const int array[512];
6421 static inline int func(void) { return array[0]; }
6422 int main(void) { return 0; }
6423 EOF
6424
6425 if enabled proper_dce; then
6426     echo "X { local: *; };" > $TMPV
6427     if test_ldflags -Wl,${version_script},$TMPV; then
6428         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6429         check_cc <<EOF && enable symver_asm_label
6430 void ff_foo(void) __asm__ ("av_foo@VERSION");
6431 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6432 EOF
6433         check_cc <<EOF && enable symver_gnu_asm
6434 __asm__(".symver ff_foo,av_foo@VERSION");
6435 void ff_foo(void) {}
6436 EOF
6437     fi
6438 fi
6439
6440 if [ -z "$optflags" ]; then
6441     if enabled small; then
6442         optflags=$cflags_size
6443     elif enabled optimizations; then
6444         optflags=$cflags_speed
6445     else
6446         optflags=$cflags_noopt
6447     fi
6448 fi
6449
6450 if [ -z "$nvccflags" ]; then
6451     nvccflags=$nvccflags_default
6452 fi
6453
6454 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6455     nvccflags="$nvccflags -m64"
6456 else
6457     nvccflags="$nvccflags -m32"
6458 fi
6459
6460 check_optflags(){
6461     check_cflags "$@"
6462     enabled lto && check_ldflags "$@"
6463 }
6464
6465 check_optflags $optflags
6466 check_optflags -fno-math-errno
6467 check_optflags -fno-signed-zeros
6468
6469 if enabled lto; then
6470     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6471     check_cflags  -flto
6472     check_ldflags -flto $cpuflags
6473     disable inline_asm_direct_symbol_refs
6474 fi
6475
6476 enabled ftrapv && check_cflags -ftrapv
6477
6478 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6479 int x;
6480 EOF
6481
6482
6483 if enabled icc; then
6484     # Just warnings, no remarks
6485     check_cflags -w1
6486     # -wd: Disable following warnings
6487     # 144, 167, 556: -Wno-pointer-sign
6488     # 188: enumerated type mixed with another type
6489     # 1292: attribute "foo" ignored
6490     # 1419: external declaration in primary source file
6491     # 10006: ignoring unknown option -fno-signed-zeros
6492     # 10148: ignoring unknown option -Wno-parentheses
6493     # 10156: ignoring option '-W'; no argument required
6494     # 13200: No EMMS instruction before call to function
6495     # 13203: No EMMS instruction before return from function
6496     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6497     # 11030: Warning unknown option --as-needed
6498     # 10156: ignoring option '-export'; no argument required
6499     check_ldflags -wd10156,11030
6500     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6501     enable ebp_available
6502     # The test above does not test linking
6503     enabled lto && disable symver_asm_label
6504     if enabled x86_32; then
6505         icc_version=$($cc -dumpversion)
6506         test ${icc_version%%.*} -ge 11 &&
6507             check_cflags -falign-stack=maintain-16-byte ||
6508             disable aligned_stack
6509     fi
6510 elif enabled ccc; then
6511     # disable some annoying warnings
6512     add_cflags -msg_disable bitnotint
6513     add_cflags -msg_disable mixfuncvoid
6514     add_cflags -msg_disable nonstandcast
6515     add_cflags -msg_disable unsupieee
6516 elif enabled gcc; then
6517     check_optflags -fno-tree-vectorize
6518     check_cflags -Werror=format-security
6519     check_cflags -Werror=implicit-function-declaration
6520     check_cflags -Werror=missing-prototypes
6521     check_cflags -Werror=return-type
6522     check_cflags -Werror=vla
6523     check_cflags -Wformat
6524     check_cflags -fdiagnostics-color=auto
6525     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6526 elif enabled llvm_gcc; then
6527     check_cflags -mllvm -stack-alignment=16
6528 elif enabled clang; then
6529     check_cflags -mllvm -stack-alignment=16
6530     check_cflags -mstack-alignment=16
6531     check_cflags -Qunused-arguments
6532     check_cflags -Werror=implicit-function-declaration
6533     check_cflags -Werror=missing-prototypes
6534     check_cflags -Werror=return-type
6535 elif enabled cparser; then
6536     add_cflags -Wno-missing-variable-declarations
6537     add_cflags -Wno-empty-statement
6538 elif enabled armcc; then
6539     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6540     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6541     # 2523: use of inline assembly is deprecated
6542     add_cflags -W${armcc_opt},--diag_suppress=2523
6543     add_cflags -W${armcc_opt},--diag_suppress=1207
6544     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6545     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6546     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6547     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6548 elif enabled tms470; then
6549     add_cflags -pds=824 -pds=837
6550     disable inline_asm
6551 elif enabled pathscale; then
6552     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6553     disable inline_asm
6554 elif enabled_any msvc icl; then
6555     enabled x86_32 && disable aligned_stack
6556     enabled_all x86_32 debug && add_cflags -Oy-
6557     enabled debug && add_ldflags -debug
6558     enable pragma_deprecated
6559     if enabled icl; then
6560         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6561         # (correctly) on icl 13.x.
6562         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6563             add_cflags -Qansi-alias
6564         # Some inline asm is not compilable in debug
6565         if enabled debug; then
6566             disable ebp_available
6567             disable ebx_available
6568         fi
6569     fi
6570     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6571     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6572     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6573     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6574     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6575     # MSVC 2013 and newer can handle it fine.
6576     # If this declspec fails, force including stdlib.h before the restrict redefinition
6577     # happens in config.h.
6578     if [ $_restrict != restrict ]; then
6579         check_cc <<EOF || add_cflags -FIstdlib.h
6580 __declspec($_restrict) void* foo(int);
6581 EOF
6582     fi
6583     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6584     # Issue has been fixed in MSVC v19.00.24218.
6585     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6586         check_cflags -d2SSAOptimizer-
6587     # enable utf-8 source processing on VS2015 U2 and newer
6588     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6589         add_cflags -utf-8
6590 fi
6591
6592 for pfx in "" host_; do
6593     varname=${pfx%_}cc_type
6594     eval "type=\$$varname"
6595     if [ "$type" = "msvc" ]; then
6596         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6597 static inline int foo(int a) { return a; }
6598 EOF
6599     fi
6600 done
6601
6602 case $as_type in
6603     clang)
6604         add_asflags -Qunused-arguments
6605     ;;
6606 esac
6607
6608 case $ld_type in
6609     clang)
6610         check_ldflags -Qunused-arguments
6611     ;;
6612 esac
6613
6614 case $target_os in
6615     osf1)
6616         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6617     ;;
6618 esac
6619
6620 enable frame_thread_encoder
6621
6622 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6623
6624 check_deps $CONFIG_LIST       \
6625            $CONFIG_EXTRA      \
6626            $HAVE_LIST         \
6627            $ALL_COMPONENTS    \
6628
6629 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"
6630
6631
6632 if test $target_os = "haiku"; then
6633     disable memalign
6634     disable posix_memalign
6635 fi
6636
6637 flatten_extralibs(){
6638     unset nested_entries
6639     list_name=$1
6640     eval list=\$${1}
6641     for entry in $list; do
6642         entry_copy=$entry
6643         resolve entry_copy
6644         append nested_entries $(filter '*_extralibs' $entry_copy)
6645         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6646         eval $entry="\$flat_entries"
6647     done
6648     append $list_name "$nested_entries"
6649
6650     resolve nested_entries
6651     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6652         flatten_extralibs $list_name
6653     fi
6654 }
6655
6656 for linkunit in $LIBRARY_LIST; do
6657     unset current_extralibs
6658     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6659     for comp in ${components}; do
6660         enabled $comp || continue
6661         comp_extralibs="${comp}_extralibs"
6662         append current_extralibs $comp_extralibs
6663     done
6664     eval prepend ${linkunit}_extralibs $current_extralibs
6665 done
6666
6667 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6668     flatten_extralibs ${linkunit}_extralibs
6669     unique  ${linkunit}_extralibs
6670     resolve ${linkunit}_extralibs
6671     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
6672 done
6673
6674 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6675
6676 for thread in $THREADS_LIST; do
6677     if enabled $thread; then
6678         test -n "$thread_type" &&
6679             die "ERROR: Only one thread type must be selected." ||
6680             thread_type="$thread"
6681     fi
6682 done
6683
6684 if disabled stdatomic_h; then
6685     if enabled atomics_gcc; then
6686         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6687     elif enabled atomics_win32; then
6688         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6689     elif enabled atomics_suncc; then
6690         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6691     elif enabled pthreads; then
6692         add_compat atomics/pthread/stdatomic.o
6693         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6694     else
6695         enabled threads && die "Threading is enabled, but no atomics are available"
6696         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6697     fi
6698 fi
6699
6700 # Check if requested libraries were found.
6701 for lib in $AUTODETECT_LIBS; do
6702     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6703 done
6704
6705 enabled zlib && add_cppflags -DZLIB_CONST
6706
6707 # conditional library dependencies, in linking order
6708 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6709 enabled afir_filter         && prepend avfilter_deps "avcodec"
6710 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6711 enabled aresample_filter    && prepend avfilter_deps "swresample"
6712 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6713 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6714 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6715 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6716 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6717 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6718 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6719 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6720 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6721 enabled pan_filter          && prepend avfilter_deps "swresample"
6722 enabled pp_filter           && prepend avfilter_deps "postproc"
6723 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6724 enabled resample_filter && prepend avfilter_deps "avresample"
6725 enabled sab_filter          && prepend avfilter_deps "swscale"
6726 enabled scale_filter    && prepend avfilter_deps "swscale"
6727 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6728 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6729 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6730 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6731 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6732 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6733 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6734 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6735 enabled spp_filter          && prepend avfilter_deps "avcodec"
6736 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6737 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6738 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6739
6740 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6741
6742 #FIXME
6743 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6744
6745 enabled opus_decoder    && prepend avcodec_deps "swresample"
6746
6747 expand_deps(){
6748     lib_deps=${1}_deps
6749     eval "deps=\$$lib_deps"
6750     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6751     unique $lib_deps
6752 }
6753
6754 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6755 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6756
6757 map 'expand_deps $v' $LIBRARY_LIST
6758
6759 license="LGPL version 2.1 or later"
6760 if enabled nonfree; then
6761     license="nonfree and unredistributable"
6762 elif enabled gplv3; then
6763     license="GPL version 3 or later"
6764 elif enabled lgplv3; then
6765     license="LGPL version 3 or later"
6766 elif enabled gpl; then
6767     license="GPL version 2 or later"
6768 fi
6769
6770 if test "$quiet" != "yes"; then
6771
6772 echo "install prefix            $prefix"
6773 echo "source path               $source_path"
6774 echo "C compiler                $cc"
6775 echo "C library                 $libc_type"
6776 if test "$host_cc" != "$cc"; then
6777     echo "host C compiler           $host_cc"
6778     echo "host C library            $host_libc_type"
6779 fi
6780 echo "ARCH                      $arch ($cpu)"
6781 if test "$build_suffix" != ""; then
6782     echo "build suffix              $build_suffix"
6783 fi
6784 if test "$progs_suffix" != ""; then
6785     echo "progs suffix              $progs_suffix"
6786 fi
6787 if test "$extra_version" != ""; then
6788     echo "version string suffix     $extra_version"
6789 fi
6790 echo "big-endian                ${bigendian-no}"
6791 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6792 if enabled x86; then
6793     echo "standalone assembly       ${x86asm-no}"
6794     echo "x86 assembler             ${x86asmexe}"
6795     echo "MMX enabled               ${mmx-no}"
6796     echo "MMXEXT enabled            ${mmxext-no}"
6797     echo "3DNow! enabled            ${amd3dnow-no}"
6798     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6799     echo "SSE enabled               ${sse-no}"
6800     echo "SSSE3 enabled             ${ssse3-no}"
6801     echo "AESNI enabled             ${aesni-no}"
6802     echo "AVX enabled               ${avx-no}"
6803     echo "AVX2 enabled              ${avx2-no}"
6804     echo "XOP enabled               ${xop-no}"
6805     echo "FMA3 enabled              ${fma3-no}"
6806     echo "FMA4 enabled              ${fma4-no}"
6807     echo "i686 features enabled     ${i686-no}"
6808     echo "CMOV is fast              ${fast_cmov-no}"
6809     echo "EBX available             ${ebx_available-no}"
6810     echo "EBP available             ${ebp_available-no}"
6811 fi
6812 if enabled aarch64; then
6813     echo "NEON enabled              ${neon-no}"
6814     echo "VFP enabled               ${vfp-no}"
6815 fi
6816 if enabled arm; then
6817     echo "ARMv5TE enabled           ${armv5te-no}"
6818     echo "ARMv6 enabled             ${armv6-no}"
6819     echo "ARMv6T2 enabled           ${armv6t2-no}"
6820     echo "VFP enabled               ${vfp-no}"
6821     echo "NEON enabled              ${neon-no}"
6822     echo "THUMB enabled             ${thumb-no}"
6823 fi
6824 if enabled mips; then
6825     echo "MIPS FPU enabled          ${mipsfpu-no}"
6826     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6827     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6828     echo "MIPS MSA enabled          ${msa-no}"
6829     echo "LOONGSON MMI enabled      ${mmi-no}"
6830 fi
6831 if enabled ppc; then
6832     echo "AltiVec enabled           ${altivec-no}"
6833     echo "VSX enabled               ${vsx-no}"
6834     echo "POWER8 enabled            ${power8-no}"
6835     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6836     echo "dcbzl available           ${dcbzl-no}"
6837 fi
6838 echo "debug symbols             ${debug-no}"
6839 echo "strip symbols             ${stripping-no}"
6840 echo "optimize for size         ${small-no}"
6841 echo "optimizations             ${optimizations-no}"
6842 echo "static                    ${static-no}"
6843 echo "shared                    ${shared-no}"
6844 echo "postprocessing support    ${postproc-no}"
6845 echo "network support           ${network-no}"
6846 echo "threading support         ${thread_type-no}"
6847 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6848 echo "texi2html enabled         ${texi2html-no}"
6849 echo "perl enabled              ${perl-no}"
6850 echo "pod2man enabled           ${pod2man-no}"
6851 echo "makeinfo enabled          ${makeinfo-no}"
6852 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6853 test -n "$random_seed" &&
6854     echo "random seed               ${random_seed}"
6855 echo
6856
6857 echo "External libraries:"
6858 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6859 echo
6860
6861 echo "External libraries providing hardware acceleration:"
6862 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6863 echo
6864
6865 echo "Libraries:"
6866 print_enabled '' $LIBRARY_LIST | print_in_columns
6867 echo
6868
6869 echo "Programs:"
6870 print_enabled '' $PROGRAM_LIST | print_in_columns
6871 echo
6872
6873 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6874     echo "Enabled ${type}s:"
6875     eval list=\$$(toupper $type)_LIST
6876     print_enabled '_*' $list | print_in_columns
6877     echo
6878 done
6879
6880 if test -n "$ignore_tests"; then
6881     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6882     echo "Ignored FATE tests:"
6883     echo $ignore_tests | print_in_columns
6884     echo
6885 fi
6886
6887 echo "License: $license"
6888
6889 echo "Creating configuration files ..."
6890
6891 fi # test "$quiet" != "yes"
6892
6893 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6894
6895 enabled stripping || strip="echo skipping strip"
6896 enabled stripping || striptype=""
6897
6898 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6899
6900 cat > ffbuild/config.mak <<EOF
6901 # Automatically generated by configure - do not modify!
6902 ifndef FFMPEG_CONFIG_MAK
6903 FFMPEG_CONFIG_MAK=1
6904 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6905 prefix=$prefix
6906 LIBDIR=\$(DESTDIR)$libdir
6907 SHLIBDIR=\$(DESTDIR)$shlibdir
6908 INCDIR=\$(DESTDIR)$incdir
6909 BINDIR=\$(DESTDIR)$bindir
6910 DATADIR=\$(DESTDIR)$datadir
6911 DOCDIR=\$(DESTDIR)$docdir
6912 MANDIR=\$(DESTDIR)$mandir
6913 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6914 INSTALL_NAME_DIR=$install_name_dir
6915 SRC_PATH=$source_path
6916 SRC_LINK=$source_link
6917 ifndef MAIN_MAKEFILE
6918 SRC_PATH:=\$(SRC_PATH:.%=..%)
6919 endif
6920 CC_IDENT=$cc_ident
6921 ARCH=$arch
6922 INTRINSICS=$intrinsics
6923 CC=$cc
6924 CXX=$cxx
6925 AS=$as
6926 OBJCC=$objcc
6927 LD=$ld
6928 DEPCC=$dep_cc
6929 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6930 DEPAS=$as
6931 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6932 X86ASM=$x86asmexe
6933 DEPX86ASM=$x86asmexe
6934 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6935 AR=$ar
6936 ARFLAGS=$arflags
6937 AR_O=$ar_o
6938 AR_CMD=$ar
6939 NM_CMD=$nm
6940 RANLIB=$ranlib
6941 STRIP=$strip
6942 STRIPTYPE=$striptype
6943 NVCC=$nvcc
6944 CP=cp -p
6945 LN_S=$ln_s
6946 CPPFLAGS=$CPPFLAGS
6947 CFLAGS=$CFLAGS
6948 CXXFLAGS=$CXXFLAGS
6949 OBJCFLAGS=$OBJCFLAGS
6950 ASFLAGS=$ASFLAGS
6951 NVCCFLAGS=$nvccflags
6952 AS_C=$AS_C
6953 AS_O=$AS_O
6954 OBJCC_C=$OBJCC_C
6955 OBJCC_E=$OBJCC_E
6956 OBJCC_O=$OBJCC_O
6957 CC_C=$CC_C
6958 CC_E=$CC_E
6959 CC_O=$CC_O
6960 CXX_C=$CXX_C
6961 CXX_O=$CXX_O
6962 NVCC_C=$NVCC_C
6963 NVCC_O=$NVCC_O
6964 LD_O=$LD_O
6965 X86ASM_O=$X86ASM_O
6966 LD_LIB=$LD_LIB
6967 LD_PATH=$LD_PATH
6968 DLLTOOL=$dlltool
6969 WINDRES=$windres
6970 DEPWINDRES=$dep_cc
6971 DOXYGEN=$doxygen
6972 LDFLAGS=$LDFLAGS
6973 LDEXEFLAGS=$LDEXEFLAGS
6974 LDSOFLAGS=$LDSOFLAGS
6975 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6976 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6977 X86ASMFLAGS=$X86ASMFLAGS
6978 BUILDSUF=$build_suffix
6979 PROGSSUF=$progs_suffix
6980 FULLNAME=$FULLNAME
6981 LIBPREF=$LIBPREF
6982 LIBSUF=$LIBSUF
6983 LIBNAME=$LIBNAME
6984 SLIBPREF=$SLIBPREF
6985 SLIBSUF=$SLIBSUF
6986 EXESUF=$EXESUF
6987 EXTRA_VERSION=$extra_version
6988 CCDEP=$CCDEP
6989 CXXDEP=$CXXDEP
6990 CCDEP_FLAGS=$CCDEP_FLAGS
6991 ASDEP=$ASDEP
6992 ASDEP_FLAGS=$ASDEP_FLAGS
6993 X86ASMDEP=$X86ASMDEP
6994 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6995 CC_DEPFLAGS=$CC_DEPFLAGS
6996 AS_DEPFLAGS=$AS_DEPFLAGS
6997 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6998 HOSTCC=$host_cc
6999 HOSTLD=$host_ld
7000 HOSTCFLAGS=$host_cflags
7001 HOSTCPPFLAGS=$host_cppflags
7002 HOSTEXESUF=$HOSTEXESUF
7003 HOSTLDFLAGS=$host_ldflags
7004 HOSTEXTRALIBS=$host_extralibs
7005 DEPHOSTCC=$host_cc
7006 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7007 HOSTCCDEP=$HOSTCCDEP
7008 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7009 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7010 HOSTCC_C=$HOSTCC_C
7011 HOSTCC_O=$HOSTCC_O
7012 HOSTLD_O=$HOSTLD_O
7013 TARGET_EXEC=$target_exec $target_exec_args
7014 TARGET_PATH=$target_path
7015 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7016 CFLAGS-ffplay=${sdl2_cflags}
7017 CFLAGS_HEADERS=$CFLAGS_HEADERS
7018 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7019 EXTRALIBS=$extralibs
7020 COMPAT_OBJS=$compat_objs
7021 INSTALL=$install
7022 LIBTARGET=${LIBTARGET}
7023 SLIBNAME=${SLIBNAME}
7024 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7025 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7026 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7027 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7028 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7029 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7030 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7031 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7032 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7033 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7034 NOREDZONE_FLAGS=$noredzone_flags
7035 LIBFUZZER_PATH=$libfuzzer_path
7036 IGNORE_TESTS=$ignore_tests
7037 EOF
7038
7039 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7040
7041 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7042     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7043 done
7044
7045 cat > $TMPH <<EOF
7046 /* Automatically generated by configure - do not modify! */
7047 #ifndef FFMPEG_CONFIG_H
7048 #define FFMPEG_CONFIG_H
7049 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7050 #define FFMPEG_LICENSE "$(c_escape $license)"
7051 #define CONFIG_THIS_YEAR 2017
7052 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7053 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7054 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7055 #define av_restrict $_restrict
7056 #define EXTERN_PREFIX "${extern_prefix}"
7057 #define EXTERN_ASM ${extern_prefix}
7058 #define BUILDSUF "$build_suffix"
7059 #define SLIBSUF "$SLIBSUF"
7060 #define HAVE_MMX2 HAVE_MMXEXT
7061 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7062 EOF
7063
7064 test -n "$assert_level" &&
7065     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7066
7067 test -n "$malloc_prefix" &&
7068     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7069
7070 if enabled x86asm; then
7071     append config_files $TMPASM
7072     printf '' >$TMPASM
7073 fi
7074
7075 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7076
7077
7078 mkdir -p doc
7079 mkdir -p tests
7080 mkdir -p tests/api
7081 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7082
7083 print_config ARCH_   "$config_files" $ARCH_LIST
7084 print_config HAVE_   "$config_files" $HAVE_LIST
7085 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7086                                      $CONFIG_EXTRA      \
7087                                      $ALL_COMPONENTS    \
7088
7089 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7090 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7091
7092 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7093 cp_if_changed $TMPH config.h
7094 touch ffbuild/.config
7095
7096 enabled x86asm && cp_if_changed $TMPASM config.asm
7097
7098 cat > $TMPH <<EOF
7099 /* Generated by ffconf */
7100 #ifndef AVUTIL_AVCONFIG_H
7101 #define AVUTIL_AVCONFIG_H
7102 EOF
7103
7104 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7105
7106 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7107
7108 cp_if_changed $TMPH libavutil/avconfig.h
7109
7110 # generate the lists of enabled components
7111 print_enabled_components(){
7112     file=$1
7113     struct_name=$2
7114     name=$3
7115     shift 3
7116     echo "static const $struct_name * const $name[] = {" > $TMPH
7117     for c in $*; do
7118         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7119     done
7120     echo "    NULL };" >> $TMPH
7121     cp_if_changed $TMPH $file
7122 }
7123
7124 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7125 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7126
7127 if test -n "$WARNINGS"; then
7128     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7129     enabled fatal_warnings && exit 1
7130 fi
7131
7132 # Settings for pkg-config files
7133
7134 cat > ffbuild/config.sh <<EOF
7135 # Automatically generated by configure - do not modify!
7136 shared=$shared
7137 build_suffix=$build_suffix
7138 prefix=$prefix
7139 libdir=$libdir
7140 incdir=$incdir
7141 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7142 source_path=${source_path}
7143 LIBPREF=${LIBPREF}
7144 LIBSUF=${LIBSUF}
7145 extralibs_avutil="$avutil_extralibs"
7146 extralibs_avcodec="$avcodec_extralibs"
7147 extralibs_avformat="$avformat_extralibs"
7148 extralibs_avdevice="$avdevice_extralibs"
7149 extralibs_avfilter="$avfilter_extralibs"
7150 extralibs_avresample="$avresample_extralibs"
7151 extralibs_postproc="$postproc_extralibs"
7152 extralibs_swscale="$swscale_extralibs"
7153 extralibs_swresample="$swresample_extralibs"
7154 EOF
7155
7156 for lib in $LIBRARY_LIST; do
7157     lib_deps="$(eval echo \$${lib}_deps)"
7158     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7159 done