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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --disable-autodetect     disable automatically detected external libraries [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
 189
 190 External library support:
 191
 192   Using any of the following switches will allow FFmpeg to link to the
 193   corresponding external library. All the components depending on that library
 194   will become enabled, if all their other dependencies are met and they are not
 195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 196   libwavpack and allow the libwavpack encoder to be built, unless it is
 197   specifically disabled with --disable-encoder=libwavpack.
 198
 199   Note that only the system libraries are auto-detected. All the other external
 200   libraries must be explicitly enabled.
 201
 202   Also note that the following help text describes the purpose of the libraries
 203   themselves, not all their features will necessarily be usable by FFmpeg.
 204
 205   --disable-alsa           disable ALSA support [autodetect]
 206   --disable-appkit         disable Apple AppKit framework [autodetect]
 207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
 208   --enable-avisynth        enable reading of AviSynth script files [no]
 209   --disable-bzlib          disable bzlib [autodetect]
 210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
 211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 212   --enable-frei0r          enable frei0r video filtering [no]
 213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 214                            if openssl, librtmp or gmp is not used [no]
 215   --enable-gmp             enable gmp, needed for rtmp(t)e support
 216                            if openssl or librtmp is not used [no]
 217   --enable-gnutls          enable gnutls, needed for https support
 218                            if openssl is not used [no]
 219   --disable-iconv          disable iconv [autodetect]
 220   --enable-jni             enable JNI support [no]
 221   --enable-ladspa          enable LADSPA audio filtering [no]
 222   --enable-libass          enable libass subtitles rendering,
 223                            needed for subtitles and ass filter [no]
 224   --enable-libbluray       enable BluRay reading using libbluray [no]
 225   --enable-libbs2b         enable bs2b DSP library [no]
 226   --enable-libcaca         enable textual display using libcaca [no]
 227   --enable-libcelt         enable CELT decoding via libcelt [no]
 228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 230                            and libraw1394 [no]
 231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 236   --enable-libgme          enable Game Music Emu via libgme [no]
 237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 240   --enable-libjack         enable JACK audio sound server [no]
 241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 242   --enable-libmodplug      enable ModPlug via libmodplug [no]
 243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 246   --enable-libopencv       enable video filtering via libopencv [no]
 247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 250   --enable-libopus         enable Opus de/encoding via libopus [no]
 251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 252   --enable-librsvg         enable SVG rasterization via librsvg [no]
 253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 258   --enable-libsoxr         enable Include libsoxr resampling [no]
 259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 260   --enable-libssh          enable SFTP protocol via libssh [no]
 261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 262   --enable-libtheora       enable Theora encoding via libtheora [no]
 263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 265   --enable-libvidstab      enable video stabilization using vid.stab [no]
 266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
 267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 269                            native implementation exists [no]
 270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 272   --enable-libwebp         enable WebP encoding via libwebp [no]
 273   --enable-libx264         enable H.264 encoding via x264 [no]
 274   --enable-libx265         enable HEVC encoding via x265 [no]
 275   --enable-libxavs         enable AVS encoding via xavs [no]
 276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 280   --enable-libxvid         enable Xvid encoding via xvidcore,
 281                            native MPEG-4/Xvid encoder exists [no]
 282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
 283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 284   --enable-libzmq          enable message passing via libzmq [no]
 285   --enable-libzvbi         enable teletext support via libzvbi [no]
 286   --disable-lzma           disable lzma [autodetect]
 287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
 289   --enable-mediacodec      enable Android MediaCodec support [no]
 290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 291   --enable-openal          enable OpenAL 1.1 capture support [no]
 292   --enable-opencl          enable OpenCL code
 293   --enable-opengl          enable OpenGL rendering [no]
 294   --enable-openssl         enable openssl, needed for https support
 295                            if gnutls is not used [no]
 296   --disable-sndio          disable sndio support [autodetect]
 297   --disable-schannel       disable SChannel SSP, needed for TLS support on
 298                            Windows if openssl and gnutls are not used [autodetect]
 299   --disable-sdl2           disable sdl2 [autodetect]
 300   --disable-securetransport disable Secure Transport, needed for TLS support
 301                            on OSX if openssl and gnutls are not used [autodetect]
 302   --disable-xlib           disable xlib [autodetect]
 303   --disable-zlib           disable zlib [autodetect]
 304
 305   The following libraries provide various hardware acceleration features:
 306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 312   --enable-libdrm          enable DRM code (Linux) [no]
 313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 316   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 317   --enable-omx             enable OpenMAX IL code [no]
 318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 319   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
 320   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 321   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 324
 325 Toolchain options:
 326   --arch=ARCH              select architecture [$arch]
 327   --cpu=CPU                select the minimum required CPU (affects
 328                            instruction selection, may crash on older CPUs)
 329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 330   --progs-suffix=SUFFIX    program name suffix []
 331   --enable-cross-compile   assume a cross-compiler is used
 332   --sysroot=PATH           root of cross-build tree
 333   --sysinclude=PATH        location of cross-build system headers
 334   --target-os=OS           compiler targets OS [$target_os]
 335   --target-exec=CMD        command to run executables on target
 336   --target-path=DIR        path to view of build directory on target
 337   --target-samples=DIR     path to samples directory on target
 338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 339   --toolchain=NAME         set tool defaults according to NAME
 340   --nm=NM                  use nm tool NM [$nm_default]
 341   --ar=AR                  use archive tool AR [$ar_default]
 342   --as=AS                  use assembler AS [$as_default]
 343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 344   --strip=STRIP            use strip tool STRIP [$strip_default]
 345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 347   --cc=CC                  use C compiler CC [$cc_default]
 348   --cxx=CXX                use C compiler CXX [$cxx_default]
 349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 352   --ld=LD                  use linker LD [$ld_default]
 353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 357   --host-cc=HOSTCC         use host C compiler HOSTCC
 358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 360   --host-ld=HOSTLD         use host linker HOSTLD
 361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 362   --host-libs=HLIBS        use libs HLIBS when linking for host
 363   --host-os=OS             compiler host OS [$target_os]
 364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 369   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 371   --extra-version=STRING   version string suffix []
 372   --optflags=OPTFLAGS      override optimization-related compiler flags
 373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 374   --build-suffix=SUFFIX    library name suffix []
 375   --enable-pic             build position-independent code
 376   --enable-thumb           compile for Thumb instruction set
 377   --enable-lto             use link-time optimization
 378   --env="ENV=override"     override the environment variables
 379
 380 Advanced options (experts only):
 381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 382   --custom-allocator=NAME  use a supported custom allocator
 383   --disable-symver         disable symbol versioning
 384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 385   --disable-safe-bitstream-reader
 386                            disable buffer boundary checking in bitreaders
 387                            (faster, but may crash)
 388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 389
 390 Optimization options (experts only):
 391   --disable-asm            disable all assembly optimizations
 392   --disable-altivec        disable AltiVec optimizations
 393   --disable-vsx            disable VSX optimizations
 394   --disable-power8         disable POWER8 optimizations
 395   --disable-amd3dnow       disable 3DNow! optimizations
 396   --disable-amd3dnowext    disable 3DNow! extended optimizations
 397   --disable-mmx            disable MMX optimizations
 398   --disable-mmxext         disable MMXEXT optimizations
 399   --disable-sse            disable SSE optimizations
 400   --disable-sse2           disable SSE2 optimizations
 401   --disable-sse3           disable SSE3 optimizations
 402   --disable-ssse3          disable SSSE3 optimizations
 403   --disable-sse4           disable SSE4 optimizations
 404   --disable-sse42          disable SSE4.2 optimizations
 405   --disable-avx            disable AVX optimizations
 406   --disable-xop            disable XOP optimizations
 407   --disable-fma3           disable FMA3 optimizations
 408   --disable-fma4           disable FMA4 optimizations
 409   --disable-avx2           disable AVX2 optimizations
 410   --disable-aesni          disable AESNI optimizations
 411   --disable-armv5te        disable armv5te optimizations
 412   --disable-armv6          disable armv6 optimizations
 413   --disable-armv6t2        disable armv6t2 optimizations
 414   --disable-vfp            disable VFP optimizations
 415   --disable-neon           disable NEON optimizations
 416   --disable-inline-asm     disable use of inline assembly
 417   --disable-x86asm         disable use of standalone x86 assembly
 418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 420   --disable-msa            disable MSA optimizations
 421   --disable-mipsfpu        disable floating point MIPS optimizations
 422   --disable-mmi            disable Loongson SIMD optimizations
 423   --disable-fast-unaligned consider unaligned accesses slow
 424
 425 Developer options (useful when working on FFmpeg itself):
 426   --disable-debug          disable debugging symbols
 427   --enable-debug=LEVEL     set the debug level [$debuglevel]
 428   --disable-optimizations  disable compiler optimizations
 429   --enable-extra-warnings  enable more compiler warnings
 430   --disable-stripping      disable stripping of executables and shared libraries
 431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 432                            2 causes a slowdown at runtime.
 433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 435                            leaks and errors, using the specified valgrind binary.
 436                            Cannot be combined with --target-exec
 437   --enable-ftrapv          Trap arithmetic overflows
 438   --samples=PATH           location of test samples for FATE, if not set use
 439                            \$FATE_SAMPLES at make invocation time.
 440   --enable-neon-clobber-test check NEON registers for clobbering (should be
 441                            used only for debugging purposes)
 442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 443                            should be used only for debugging purposes)
 444   --enable-random          randomly enable/disable components
 445   --disable-random
 446   --enable-random=LIST     randomly enable/disable specific components or
 447   --disable-random=LIST    component groups. LIST is a comma-separated list
 448                            of NAME[:PROB] entries where NAME is a component
 449                            (group) and PROB the probability associated with
 450                            NAME (default 0.5).
 451   --random-seed=VALUE      seed value for --enable/disable-random
 452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 453                            (only applies to --disable-optimizations builds)
 454   --enable-osfuzz          Enable building fuzzer tool
 455   --libfuzzer=PATH         path to libfuzzer
 456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 457                            in the name) of tests whose result is ignored
 458   --enable-linux-perf      enable Linux Performance Monitor API
 459
 460 NOTE: Object files are built at the place where configure is launched.
 461 EOF
 462   exit 0
 463 }
 464
 465 quotes='""'
 466 if test -t 1 && which tput >/dev/null 2>&1; then
 467     ncolors=$(tput colors)
 468     if test -n "$ncolors" && test $ncolors -ge 8; then
 469         bold_color=$(tput bold)
 470         warn_color=$(tput setaf 3)
 471         error_color=$(tput setaf 1)
 472         reset_color=$(tput sgr0)
 473     fi
 474     # 72 used instead of 80 since that's the default of pr
 475     ncols=$(tput cols)
 476 fi
 477 : ${ncols:=72}
 478
 479 log(){
 480     echo "$@" >> $logfile
 481 }
 482
 483 log_file(){
 484     log BEGIN $1
 485     pr -n -t $1 >> $logfile
 486     log END $1
 487 }
 488
 489 warn(){
 490     log "WARNING: $*"
 491     WARNINGS="${WARNINGS}WARNING: $*\n"
 492 }
 493
 494 die(){
 495     log "$@"
 496     echo "$error_color$bold_color$@$reset_color"
 497     cat <<EOF
 498
 499 If you think configure made a mistake, make sure you are using the latest
 500 version from Git.  If the latest version fails, report the problem to the
 501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 502 EOF
 503     if disabled logging; then
 504         cat <<EOF
 505 Rerun configure with logging enabled (do not use --disable-logging), and
 506 include the log this produces with your report.
 507 EOF
 508     else
 509         cat <<EOF
 510 Include the log file "$logfile" produced by configure as this will help
 511 solve the problem.
 512 EOF
 513     fi
 514     exit 1
 515 }
 516
 517 # Avoid locale weirdness, besides we really just want to translate ASCII.
 518 toupper(){
 519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 520 }
 521
 522 tolower(){
 523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 524 }
 525
 526 c_escape(){
 527     echo "$*" | sed 's/["\\]/\\\0/g'
 528 }
 529
 530 sh_quote(){
 531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 533     echo "$v"
 534 }
 535
 536 cleanws(){
 537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 538 }
 539
 540 filter(){
 541     pat=$1
 542     shift
 543     for v; do
 544         eval "case $v in $pat) printf '%s ' $v ;; esac"
 545     done
 546 }
 547
 548 filter_out(){
 549     pat=$1
 550     shift
 551     for v; do
 552         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 553     done
 554 }
 555
 556 map(){
 557     m=$1
 558     shift
 559     for v; do eval $m; done
 560 }
 561
 562 add_suffix(){
 563     suffix=$1
 564     shift
 565     for v; do echo ${v}${suffix}; done
 566 }
 567
 568 set_all(){
 569     value=$1
 570     shift
 571     for var in $*; do
 572         eval $var=$value
 573     done
 574 }
 575
 576 set_weak(){
 577     value=$1
 578     shift
 579     for var; do
 580         eval : \${$var:=$value}
 581     done
 582 }
 583
 584 sanitize_var_name(){
 585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 586 }
 587
 588 set_safe(){
 589     var=$1
 590     shift
 591     eval $(sanitize_var_name "$var")='$*'
 592 }
 593
 594 get_safe(){
 595     eval echo \$$(sanitize_var_name "$1")
 596 }
 597
 598 pushvar(){
 599     for pvar in $*; do
 600         eval level=\${${pvar}_level:=0}
 601         eval ${pvar}_${level}="\$$pvar"
 602         eval ${pvar}_level=$(($level+1))
 603     done
 604 }
 605
 606 popvar(){
 607     for pvar in $*; do
 608         eval level=\${${pvar}_level:-0}
 609         test $level = 0 && continue
 610         eval level=$(($level-1))
 611         eval $pvar="\${${pvar}_${level}}"
 612         eval ${pvar}_level=$level
 613         eval unset ${pvar}_${level}
 614     done
 615 }
 616
 617 request(){
 618     for var in $*; do
 619         eval ${var}_requested=yes
 620         eval $var=
 621     done
 622 }
 623
 624 enable(){
 625     set_all yes $*
 626 }
 627
 628 disable(){
 629     set_all no $*
 630 }
 631
 632 enable_weak(){
 633     set_weak yes $*
 634 }
 635
 636 disable_weak(){
 637     set_weak no $*
 638 }
 639
 640 enable_safe(){
 641     for var; do
 642         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 643     done
 644 }
 645
 646 disable_safe(){
 647     for var; do
 648         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 649     done
 650 }
 651
 652 do_enable_deep(){
 653     for var; do
 654         enabled $var && continue
 655         eval sel="\$${var}_select"
 656         eval sgs="\$${var}_suggest"
 657         pushvar var sgs
 658         enable_deep $sel
 659         popvar sgs
 660         enable_deep_weak $sgs
 661         popvar var
 662     done
 663 }
 664
 665 enable_deep(){
 666     do_enable_deep $*
 667     enable $*
 668 }
 669
 670 enable_deep_weak(){
 671     for var; do
 672         disabled $var && continue
 673         pushvar var
 674         do_enable_deep $var
 675         popvar var
 676         enable_weak $var
 677     done
 678 }
 679
 680 requested(){
 681     test "${1#!}" = "$1" && op='=' || op=!=
 682     eval test "x\$${1#!}_requested" $op "xyes"
 683 }
 684
 685 enabled(){
 686     test "${1#!}" = "$1" && op='=' || op=!=
 687     eval test "x\$${1#!}" $op "xyes"
 688 }
 689
 690 disabled(){
 691     test "${1#!}" = "$1" && op='=' || op=!=
 692     eval test "x\$${1#!}" $op "xno"
 693 }
 694
 695 enabled_all(){
 696     for opt; do
 697         enabled $opt || return 1
 698     done
 699 }
 700
 701 disabled_all(){
 702     for opt; do
 703         disabled $opt || return 1
 704     done
 705 }
 706
 707 enabled_any(){
 708     for opt; do
 709         enabled $opt && return 0
 710     done
 711 }
 712
 713 disabled_any(){
 714     for opt; do
 715         disabled $opt && return 0
 716     done
 717     return 1
 718 }
 719
 720 set_default(){
 721     for opt; do
 722         eval : \${$opt:=\$${opt}_default}
 723     done
 724 }
 725
 726 is_in(){
 727     value=$1
 728     shift
 729     for var in $*; do
 730         [ $var = $value ] && return 0
 731     done
 732     return 1
 733 }
 734
 735 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_ldlibflags(){
 874     append LDLIBFLAGS $($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_safe $header
1113     check_cpp "$@" <<EOF && enable_safe $header
1114 #include <$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_safe $header
1125     {
1126        echo "#include <$header>"
1127        echo "int main(void) { return 0; }"
1128     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1129 }
1130
1131 check_apple_framework(){
1132     log check_apple_framework "$@"
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_safe $headers
1201 }
1202
1203 check_class_headers_cpp(){
1204     log check_class_headers_cpp "$@"
1205     headers=$1
1206     classes=$2
1207     shift 2
1208     {
1209         for hdr in $headers; do
1210             echo "#include <$hdr>"
1211         done
1212         echo "int main(void) { "
1213         i=1
1214         for class in $classes; do
1215             echo "$class obj$i;"
1216             i=$(expr $i + 1)
1217         done
1218         echo "return 0; }"
1219     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1220 }
1221
1222 check_cpp_condition(){
1223     log check_cpp_condition "$@"
1224     header=$1
1225     condition=$2
1226     shift 2
1227     check_cpp "$@" <<EOF
1228 #include <$header>
1229 #if !($condition)
1230 #error "unsatisfied condition: $condition"
1231 #endif
1232 EOF
1233 }
1234
1235 test_cflags_cc(){
1236     log test_cflags_cc "$@"
1237     flags=$1
1238     header=$2
1239     condition=$3
1240     shift 3
1241     set -- $($cflags_filter "$flags")
1242     check_cc "$@" <<EOF
1243 #include <$header>
1244 #if !($condition)
1245 #error "unsatisfied condition: $condition"
1246 #endif
1247 EOF
1248 }
1249
1250 check_lib(){
1251     log check_lib "$@"
1252     name="$1"
1253     headers="$2"
1254     funcs="$3"
1255     shift 3
1256     disable $name
1257     check_func_headers "$headers" "$funcs" "$@" &&
1258         enable $name && 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 $name &&
1286         set_safe "${name}_cflags"    $pkg_cflags &&
1287         set_safe "${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=$2
1329     shift 2
1330     disable_safe "$type"
1331     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1332 }
1333
1334 check_struct(){
1335     log check_struct "$@"
1336     headers=$1
1337     struct=$2
1338     member=$3
1339     shift 3
1340     disable_safe "${struct}_${member}"
1341     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1342         enable_safe "${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    $(get_safe "${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     libvo_amrwbenc
1574     rkmpp
1575 "
1576
1577 EXTERNAL_LIBRARY_GPLV3_LIST="
1578     libsmbclient
1579 "
1580
1581 EXTERNAL_LIBRARY_LIST="
1582     $EXTERNAL_LIBRARY_GPL_LIST
1583     $EXTERNAL_LIBRARY_NONFREE_LIST
1584     $EXTERNAL_LIBRARY_VERSION3_LIST
1585     $EXTERNAL_LIBRARY_GPLV3_LIST
1586     chromaprint
1587     gcrypt
1588     gnutls
1589     jni
1590     ladspa
1591     libass
1592     libbluray
1593     libbs2b
1594     libcaca
1595     libcelt
1596     libdc1394
1597     libdrm
1598     libflite
1599     libfontconfig
1600     libfreetype
1601     libfribidi
1602     libgme
1603     libgsm
1604     libiec61883
1605     libilbc
1606     libjack
1607     libkvazaar
1608     libmodplug
1609     libmp3lame
1610     libmysofa
1611     libopencv
1612     libopenh264
1613     libopenjpeg
1614     libopenmpt
1615     libopus
1616     libpulse
1617     librsvg
1618     librtmp
1619     libshine
1620     libsmbclient
1621     libsnappy
1622     libsoxr
1623     libspeex
1624     libssh
1625     libtesseract
1626     libtheora
1627     libtwolame
1628     libv4l2
1629     libvmaf
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     nvenc
1652     vaapi
1653     vda
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_8
1887     local_aligned_16
1888     local_aligned_32
1889     simd_align_16
1890     simd_align_32
1891 "
1892
1893 BUILTIN_LIST="
1894     atomic_cas_ptr
1895     machine_rw_barrier
1896     MemoryBarrier
1897     mm_empty
1898     rdtsc
1899     sarestart
1900     sem_timedwait
1901     sync_val_compare_and_swap
1902 "
1903 HAVE_LIST_CMDLINE="
1904     inline_asm
1905     symver
1906     x86asm
1907 "
1908
1909 HAVE_LIST_PUB="
1910     bigendian
1911     fast_unaligned
1912 "
1913
1914 HEADERS_LIST="
1915     altivec_h
1916     arpa_inet_h
1917     asm_types_h
1918     cdio_paranoia_h
1919     cdio_paranoia_paranoia_h
1920     cuda_h
1921     d3d11_h
1922     dispatch_dispatch_h
1923     dev_bktr_ioctl_bt848_h
1924     dev_bktr_ioctl_meteor_h
1925     dev_ic_bt8xx_h
1926     dev_video_bktr_ioctl_bt848_h
1927     dev_video_meteor_ioctl_meteor_h
1928     direct_h
1929     dirent_h
1930     dlfcn_h
1931     dxgidebug_h
1932     dxva_h
1933     ES2_gl_h
1934     gsm_h
1935     io_h
1936     mach_mach_time_h
1937     machine_ioctl_bt848_h
1938     machine_ioctl_meteor_h
1939     malloc_h
1940     opencv2_core_core_c_h
1941     OpenGL_gl3_h
1942     poll_h
1943     soundcard_h
1944     stdatomic_h
1945     sys_mman_h
1946     sys_param_h
1947     sys_resource_h
1948     sys_select_h
1949     sys_soundcard_h
1950     sys_time_h
1951     sys_un_h
1952     sys_videoio_h
1953     termios_h
1954     udplite_h
1955     unistd_h
1956     valgrind_valgrind_h
1957     windows_h
1958     winsock2_h
1959 "
1960
1961 INTRINSICS_LIST="
1962     intrinsics_neon
1963 "
1964
1965 COMPLEX_FUNCS="
1966     cabs
1967     cexp
1968 "
1969
1970 MATH_FUNCS="
1971     atanf
1972     atan2f
1973     cbrt
1974     cbrtf
1975     copysign
1976     cosf
1977     erf
1978     exp2
1979     exp2f
1980     expf
1981     hypot
1982     isfinite
1983     isinf
1984     isnan
1985     ldexpf
1986     llrint
1987     llrintf
1988     log2
1989     log2f
1990     log10f
1991     lrint
1992     lrintf
1993     powf
1994     rint
1995     round
1996     roundf
1997     sinf
1998     trunc
1999     truncf
2000 "
2001
2002 SYSTEM_FUNCS="
2003     access
2004     aligned_malloc
2005     arc4random
2006     clock_gettime
2007     closesocket
2008     CommandLineToArgvW
2009     CoTaskMemFree
2010     CryptGenRandom
2011     fcntl
2012     flt_lim
2013     fork
2014     getaddrinfo
2015     gethrtime
2016     getopt
2017     GetProcessAffinityMask
2018     GetProcessMemoryInfo
2019     GetProcessTimes
2020     getrusage
2021     GetSystemTimeAsFileTime
2022     gettimeofday
2023     glob
2024     glXGetProcAddress
2025     gmtime_r
2026     inet_aton
2027     isatty
2028     jack_port_get_latency_range
2029     kbhit
2030     LoadLibrary
2031     localtime_r
2032     lstat
2033     lzo1x_999_compress
2034     mach_absolute_time
2035     MapViewOfFile
2036     memalign
2037     mkstemp
2038     mmap
2039     mprotect
2040     nanosleep
2041     PeekNamedPipe
2042     posix_memalign
2043     pthread_cancel
2044     sched_getaffinity
2045     SetConsoleTextAttribute
2046     SetConsoleCtrlHandler
2047     setmode
2048     setrlimit
2049     Sleep
2050     strerror_r
2051     sysconf
2052     sysctl
2053     usleep
2054     UTGetOSTypeFromString
2055     VirtualAlloc
2056     wglGetProcAddress
2057 "
2058
2059 TOOLCHAIN_FEATURES="
2060     as_dn_directive
2061     as_fpu_directive
2062     as_func
2063     as_object_arch
2064     asm_mod_q
2065     attribute_may_alias
2066     attribute_packed
2067     blocks_extension
2068     ebp_available
2069     ebx_available
2070     gnu_as
2071     gnu_windres
2072     ibm_asm
2073     inline_asm_direct_symbol_refs
2074     inline_asm_labels
2075     inline_asm_nonlocal_labels
2076     pragma_deprecated
2077     rsync_contimeout
2078     symver_asm_label
2079     symver_gnu_asm
2080     vfp_args
2081     xform_asm
2082     xmm_clobbers
2083 "
2084
2085 TYPES_LIST="
2086     CONDITION_VARIABLE_Ptr
2087     kCMVideoCodecType_HEVC
2088     socklen_t
2089     struct_addrinfo
2090     struct_group_source_req
2091     struct_ip_mreq_source
2092     struct_ipv6_mreq
2093     struct_msghdr_msg_flags
2094     struct_pollfd
2095     struct_rusage_ru_maxrss
2096     struct_sctp_event_subscribe
2097     struct_sockaddr_in6
2098     struct_sockaddr_sa_len
2099     struct_sockaddr_storage
2100     struct_stat_st_mtim_tv_nsec
2101     struct_v4l2_frmivalenum_discrete
2102 "
2103
2104 HAVE_LIST="
2105     $ARCH_EXT_LIST
2106     $(add_suffix _external $ARCH_EXT_LIST)
2107     $(add_suffix _inline   $ARCH_EXT_LIST)
2108     $ARCH_FEATURES
2109     $ATOMICS_LIST
2110     $BUILTIN_LIST
2111     $COMPLEX_FUNCS
2112     $HAVE_LIST_CMDLINE
2113     $HAVE_LIST_PUB
2114     $HEADERS_LIST
2115     $INTRINSICS_LIST
2116     $MATH_FUNCS
2117     $SYSTEM_FUNCS
2118     $THREADS_LIST
2119     $TOOLCHAIN_FEATURES
2120     $TYPES_LIST
2121     atomics_native
2122     dos_paths
2123     libc_msvcrt
2124     makeinfo
2125     makeinfo_html
2126     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2127     perl
2128     pod2man
2129     section_data_rel_ro
2130     texi2html
2131     threads
2132     uwp
2133     vaapi_drm
2134     vaapi_x11
2135     vdpau_x11
2136     winrt
2137 "
2138
2139 # options emitted with CONFIG_ prefix but not available on the command line
2140 CONFIG_EXTRA="
2141     aandcttables
2142     ac3dsp
2143     audio_frame_queue
2144     audiodsp
2145     blockdsp
2146     bswapdsp
2147     cabac
2148     cbs
2149     cbs_h264
2150     cbs_h265
2151     cbs_mpeg2
2152     dirac_parse
2153     dvprofile
2154     exif
2155     faandct
2156     faanidct
2157     fdctdsp
2158     flacdsp
2159     fmtconvert
2160     frame_thread_encoder
2161     g722dsp
2162     golomb
2163     gplv3
2164     h263dsp
2165     h264chroma
2166     h264dsp
2167     h264parse
2168     h264pred
2169     h264qpel
2170     hevcparse
2171     hpeldsp
2172     huffman
2173     huffyuvdsp
2174     huffyuvencdsp
2175     idctdsp
2176     iirfilter
2177     mdct15
2178     intrax8
2179     iso_media
2180     ividsp
2181     jpegtables
2182     lgplv3
2183     libx262
2184     llauddsp
2185     llviddsp
2186     llvidencdsp
2187     lpc
2188     lzf
2189     me_cmp
2190     mpeg_er
2191     mpegaudio
2192     mpegaudiodsp
2193     mpegaudioheader
2194     mpegvideo
2195     mpegvideoenc
2196     mss34dsp
2197     pixblockdsp
2198     qpeldsp
2199     qsv
2200     qsvdec
2201     qsvenc
2202     rangecoder
2203     riffdec
2204     riffenc
2205     rtpdec
2206     rtpenc_chain
2207     rv34dsp
2208     sinewin
2209     snappy
2210     srtp
2211     startcode
2212     texturedsp
2213     texturedspenc
2214     tpeldsp
2215     vaapi_1
2216     vaapi_encode
2217     vc1dsp
2218     videodsp
2219     vp3dsp
2220     vp56dsp
2221     vp8dsp
2222     wma_freqs
2223     wmv2dsp
2224 "
2225
2226 CMDLINE_SELECT="
2227     $ARCH_EXT_LIST
2228     $CONFIG_LIST
2229     $HAVE_LIST_CMDLINE
2230     $THREADS_LIST
2231     asm
2232     cross_compile
2233     debug
2234     extra_warnings
2235     logging
2236     lto
2237     optimizations
2238     rpath
2239     stripping
2240 "
2241
2242 PATHS_LIST="
2243     bindir
2244     datadir
2245     docdir
2246     incdir
2247     libdir
2248     mandir
2249     pkgconfigdir
2250     prefix
2251     shlibdir
2252     install_name_dir
2253 "
2254
2255 CMDLINE_SET="
2256     $PATHS_LIST
2257     ar
2258     arch
2259     as
2260     assert_level
2261     build_suffix
2262     cc
2263     objcc
2264     cpu
2265     cross_prefix
2266     custom_allocator
2267     cxx
2268     dep_cc
2269     doxygen
2270     env
2271     extra_version
2272     gas
2273     host_cc
2274     host_cflags
2275     host_extralibs
2276     host_ld
2277     host_ldflags
2278     host_os
2279     ignore_tests
2280     install
2281     ld
2282     ln_s
2283     logfile
2284     malloc_prefix
2285     nm
2286     optflags
2287     nvccflags
2288     pkg_config
2289     pkg_config_flags
2290     progs_suffix
2291     random_seed
2292     ranlib
2293     samples
2294     strip
2295     sws_max_filter_size
2296     sysinclude
2297     sysroot
2298     target_exec
2299     target_os
2300     target_path
2301     target_samples
2302     tempprefix
2303     toolchain
2304     valgrind
2305     x86asmexe
2306 "
2307
2308 CMDLINE_APPEND="
2309     extra_cflags
2310     extra_cxxflags
2311     extra_objcflags
2312     host_cppflags
2313 "
2314
2315 # code dependency declarations
2316
2317 # architecture extensions
2318
2319 armv5te_deps="arm"
2320 armv6_deps="arm"
2321 armv6t2_deps="arm"
2322 armv8_deps="aarch64"
2323 neon_deps_any="aarch64 arm"
2324 intrinsics_neon_deps="neon"
2325 vfp_deps_any="aarch64 arm"
2326 vfpv3_deps="vfp"
2327 setend_deps="arm"
2328
2329 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2330
2331 loongson2_deps="mips"
2332 loongson3_deps="mips"
2333 mipsfpu_deps="mips"
2334 mipsdsp_deps="mips"
2335 mipsdspr2_deps="mips"
2336 mips32r2_deps="mips"
2337 mips32r5_deps="mips"
2338 mips32r6_deps="mips"
2339 mips64r2_deps="mips"
2340 mips64r6_deps="mips"
2341 msa_deps="mipsfpu"
2342 mmi_deps="mips"
2343
2344 altivec_deps="ppc"
2345 dcbzl_deps="ppc"
2346 ldbrx_deps="ppc"
2347 ppc4xx_deps="ppc"
2348 vsx_deps="altivec"
2349 power8_deps="vsx"
2350
2351 cpunop_deps="i686"
2352 x86_64_select="i686"
2353 x86_64_suggest="fast_cmov"
2354
2355 amd3dnow_deps="mmx"
2356 amd3dnowext_deps="amd3dnow"
2357 i686_deps="x86"
2358 mmx_deps="x86"
2359 mmxext_deps="mmx"
2360 sse_deps="mmxext"
2361 sse2_deps="sse"
2362 sse3_deps="sse2"
2363 ssse3_deps="sse3"
2364 sse4_deps="ssse3"
2365 sse42_deps="sse4"
2366 aesni_deps="sse42"
2367 avx_deps="sse42"
2368 xop_deps="avx"
2369 fma3_deps="avx"
2370 fma4_deps="avx"
2371 avx2_deps="avx"
2372
2373 mmx_external_deps="x86asm"
2374 mmx_inline_deps="inline_asm"
2375 mmx_suggest="mmx_external mmx_inline"
2376
2377 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2378     eval dep=\$${ext}_deps
2379     eval ${ext}_external_deps='"${dep}_external"'
2380     eval ${ext}_inline_deps='"${dep}_inline"'
2381     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2382 done
2383
2384 aligned_stack_if_any="aarch64 ppc x86"
2385 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2386 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2387 fast_unaligned_if_any="aarch64 ppc x86"
2388 simd_align_16_if_any="altivec neon sse"
2389 simd_align_32_if_any="avx"
2390
2391 # system capabilities
2392 symver_if_any="symver_asm_label symver_gnu_asm"
2393 valgrind_backtrace_conflict="optimizations"
2394 valgrind_backtrace_deps="valgrind_valgrind_h"
2395
2396 # threading support
2397 atomics_gcc_if="sync_val_compare_and_swap"
2398 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2399 atomics_win32_if="MemoryBarrier"
2400 atomics_native_if_any="$ATOMICS_LIST"
2401 w32threads_deps="atomics_native"
2402 threads_if_any="$THREADS_LIST"
2403
2404 # subsystems
2405 cbs_h264_select="cbs golomb"
2406 cbs_h265_select="cbs golomb"
2407 cbs_mpeg2_select="cbs"
2408 dct_select="rdft"
2409 dirac_parse_select="golomb"
2410 error_resilience_select="me_cmp"
2411 faandct_deps="faan fdctdsp"
2412 faanidct_deps="faan 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="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 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2527 metasound_decoder_select="lsp mdct sinewin"
2528 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2529 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2530 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2531 mjpegb_decoder_select="mjpeg_decoder"
2532 mlp_decoder_select="mlp_parser"
2533 mlp_encoder_select="lpc"
2534 motionpixels_decoder_select="bswapdsp"
2535 mp1_decoder_select="mpegaudio"
2536 mp1float_decoder_select="mpegaudio"
2537 mp2_decoder_select="mpegaudio"
2538 mp2float_decoder_select="mpegaudio"
2539 mp3_decoder_select="mpegaudio"
2540 mp3adu_decoder_select="mpegaudio"
2541 mp3adufloat_decoder_select="mpegaudio"
2542 mp3float_decoder_select="mpegaudio"
2543 mp3on4_decoder_select="mpegaudio"
2544 mp3on4float_decoder_select="mpegaudio"
2545 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2546 mpc8_decoder_select="mpegaudiodsp"
2547 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2548 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2549 mpegvideo_decoder_select="mpegvideo"
2550 mpeg1video_decoder_select="mpegvideo"
2551 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2552 mpeg2video_decoder_select="mpegvideo"
2553 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2554 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2555 mpeg4_encoder_select="h263_encoder"
2556 msa1_decoder_select="mss34dsp"
2557 mscc_decoder_select="zlib"
2558 msmpeg4v1_decoder_select="h263_decoder"
2559 msmpeg4v2_decoder_select="h263_decoder"
2560 msmpeg4v2_encoder_select="h263_encoder"
2561 msmpeg4v3_decoder_select="h263_decoder"
2562 msmpeg4v3_encoder_select="h263_encoder"
2563 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2564 mts2_decoder_select="mss34dsp"
2565 mxpeg_decoder_select="mjpeg_decoder"
2566 nellymoser_decoder_select="mdct sinewin"
2567 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2568 nuv_decoder_select="idctdsp lzo"
2569 on2avc_decoder_select="mdct"
2570 opus_decoder_deps="swresample"
2571 opus_decoder_select="mdct15"
2572 opus_encoder_select="audio_frame_queue mdct15"
2573 png_decoder_select="zlib"
2574 png_encoder_select="llvidencdsp zlib"
2575 prores_decoder_select="blockdsp idctdsp"
2576 prores_encoder_select="fdctdsp"
2577 qcelp_decoder_select="lsp"
2578 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2579 ra_144_decoder_select="audiodsp"
2580 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2581 ralf_decoder_select="golomb"
2582 rawvideo_decoder_select="bswapdsp"
2583 rscc_decoder_select="zlib"
2584 rtjpeg_decoder_select="me_cmp"
2585 rv10_decoder_select="h263_decoder"
2586 rv10_encoder_select="h263_encoder"
2587 rv20_decoder_select="h263_decoder"
2588 rv20_encoder_select="h263_encoder"
2589 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2590 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2591 screenpresso_decoder_select="zlib"
2592 shorten_decoder_select="bswapdsp"
2593 sipr_decoder_select="lsp"
2594 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2595 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2596 sonic_decoder_select="golomb rangecoder"
2597 sonic_encoder_select="golomb rangecoder"
2598 sonic_ls_encoder_select="golomb rangecoder"
2599 sp5x_decoder_select="mjpeg_decoder"
2600 srgc_decoder_select="zlib"
2601 svq1_decoder_select="hpeldsp"
2602 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2603 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2604 svq3_decoder_suggest="zlib"
2605 tak_decoder_select="audiodsp"
2606 tdsc_decoder_select="zlib mjpeg_decoder"
2607 theora_decoder_select="vp3_decoder"
2608 thp_decoder_select="mjpeg_decoder"
2609 tiff_decoder_suggest="zlib lzma"
2610 tiff_encoder_suggest="zlib"
2611 truehd_decoder_select="mlp_parser"
2612 truehd_encoder_select="lpc"
2613 truemotion2_decoder_select="bswapdsp"
2614 truespeech_decoder_select="bswapdsp"
2615 tscc_decoder_select="zlib"
2616 twinvq_decoder_select="mdct lsp sinewin"
2617 txd_decoder_select="texturedsp"
2618 utvideo_decoder_select="bswapdsp llviddsp"
2619 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2620 vble_decoder_select="llviddsp"
2621 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2622 vc1_qsv_decoder_deps="libmfx"
2623 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2624 vc1image_decoder_select="vc1_decoder"
2625 vorbis_decoder_select="mdct"
2626 vorbis_encoder_select="mdct"
2627 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2628 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2629 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2630 vp6a_decoder_select="vp6_decoder"
2631 vp6f_decoder_select="vp6_decoder"
2632 vp7_decoder_select="h264pred videodsp vp8dsp"
2633 vp8_decoder_select="h264pred videodsp vp8dsp"
2634 vp9_decoder_select="videodsp vp9_parser"
2635 webp_decoder_select="vp8_decoder exif"
2636 wmalossless_decoder_select="llauddsp"
2637 wmapro_decoder_select="mdct sinewin wma_freqs"
2638 wmav1_decoder_select="mdct sinewin wma_freqs"
2639 wmav1_encoder_select="mdct sinewin wma_freqs"
2640 wmav2_decoder_select="mdct sinewin wma_freqs"
2641 wmav2_encoder_select="mdct sinewin wma_freqs"
2642 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2643 wmv1_decoder_select="h263_decoder"
2644 wmv1_encoder_select="h263_encoder"
2645 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2646 wmv2_encoder_select="h263_encoder wmv2dsp"
2647 wmv3_decoder_select="vc1_decoder"
2648 wmv3image_decoder_select="wmv3_decoder"
2649 xma1_decoder_select="wmapro_decoder"
2650 xma2_decoder_select="wmapro_decoder"
2651 zerocodec_decoder_select="zlib"
2652 zlib_decoder_select="zlib"
2653 zlib_encoder_select="zlib"
2654 zmbv_decoder_select="zlib"
2655 zmbv_encoder_select="zlib"
2656
2657 # hardware accelerators
2658 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2659 cuda_deps_any="libdl LoadLibrary"
2660 cuvid_deps="cuda"
2661 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2662 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2663 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2664 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2665 vda_deps="vda_framework pthreads corefoundation"
2666 vda_extralibs="-framework QuartzCore"
2667 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2668 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2669 xvmc_deps="X11_extensions_XvMClib_h"
2670
2671 h263_vaapi_hwaccel_deps="vaapi"
2672 h263_vaapi_hwaccel_select="h263_decoder"
2673 h263_videotoolbox_hwaccel_deps="videotoolbox"
2674 h263_videotoolbox_hwaccel_select="h263_decoder"
2675 h264_cuvid_hwaccel_deps="cuda cuvid"
2676 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2677 h264_d3d11va_hwaccel_deps="d3d11va"
2678 h264_d3d11va_hwaccel_select="h264_decoder"
2679 h264_d3d11va2_hwaccel_deps="d3d11va"
2680 h264_d3d11va2_hwaccel_select="h264_decoder"
2681 h264_dxva2_hwaccel_deps="dxva2"
2682 h264_dxva2_hwaccel_select="h264_decoder"
2683 h264_mediacodec_hwaccel_deps="mediacodec"
2684 h264_mmal_hwaccel_deps="mmal"
2685 h264_qsv_hwaccel_deps="libmfx"
2686 h264_vaapi_hwaccel_deps="vaapi"
2687 h264_vaapi_hwaccel_select="h264_decoder"
2688 h264_vda_hwaccel_deps="vda"
2689 h264_vda_hwaccel_select="h264_decoder"
2690 h264_vda_old_hwaccel_deps="vda"
2691 h264_vda_old_hwaccel_select="h264_decoder"
2692 h264_vdpau_hwaccel_deps="vdpau"
2693 h264_vdpau_hwaccel_select="h264_decoder"
2694 h264_videotoolbox_hwaccel_deps="videotoolbox"
2695 h264_videotoolbox_hwaccel_select="h264_decoder"
2696 hevc_cuvid_hwaccel_deps="cuda cuvid"
2697 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2698 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2699 hevc_d3d11va_hwaccel_select="hevc_decoder"
2700 hevc_mediacodec_hwaccel_deps="mediacodec"
2701 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2702 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2703 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2704 hevc_dxva2_hwaccel_select="hevc_decoder"
2705 hevc_qsv_hwaccel_deps="libmfx"
2706 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2707 hevc_vaapi_hwaccel_select="hevc_decoder"
2708 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2709 hevc_vdpau_hwaccel_select="hevc_decoder"
2710 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2711 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2712 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2713 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2714 mpeg_xvmc_hwaccel_deps="xvmc"
2715 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2716 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2717 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2718 mpeg1_vdpau_hwaccel_deps="vdpau"
2719 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2720 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2721 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2722 mpeg1_xvmc_hwaccel_deps="xvmc"
2723 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2724 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2725 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2726 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2727 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2728 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2729 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2730 mpeg2_dxva2_hwaccel_deps="dxva2"
2731 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2732 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2733 mpeg2_mmal_hwaccel_deps="mmal"
2734 mpeg2_qsv_hwaccel_deps="libmfx"
2735 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2736 mpeg2_vaapi_hwaccel_deps="vaapi"
2737 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2738 mpeg2_vdpau_hwaccel_deps="vdpau"
2739 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2740 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2741 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2742 mpeg2_xvmc_hwaccel_deps="xvmc"
2743 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2744 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2745 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2746 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2747 mpeg4_mmal_hwaccel_deps="mmal"
2748 mpeg4_vaapi_hwaccel_deps="vaapi"
2749 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2750 mpeg4_vdpau_hwaccel_deps="vdpau"
2751 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2752 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2753 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2754 vc1_cuvid_hwaccel_deps="cuda cuvid"
2755 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2756 vc1_d3d11va_hwaccel_deps="d3d11va"
2757 vc1_d3d11va_hwaccel_select="vc1_decoder"
2758 vc1_d3d11va2_hwaccel_deps="d3d11va"
2759 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2760 vc1_dxva2_hwaccel_deps="dxva2"
2761 vc1_dxva2_hwaccel_select="vc1_decoder"
2762 vc1_mmal_hwaccel_deps="mmal"
2763 vc1_qsv_hwaccel_deps="libmfx"
2764 vc1_qsv_hwaccel_select="qsvdec_vc1"
2765 vc1_vaapi_hwaccel_deps="vaapi"
2766 vc1_vaapi_hwaccel_select="vc1_decoder"
2767 vc1_vdpau_hwaccel_deps="vdpau"
2768 vc1_vdpau_hwaccel_select="vc1_decoder"
2769 vp8_cuvid_hwaccel_deps="cuda cuvid"
2770 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2771 vp9_cuvid_hwaccel_deps="cuda cuvid"
2772 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2773 vp8_mediacodec_hwaccel_deps="mediacodec"
2774 vp8_qsv_hwaccel_deps="libmfx"
2775 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2776 vp9_d3d11va_hwaccel_select="vp9_decoder"
2777 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2778 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2779 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2780 vp9_dxva2_hwaccel_select="vp9_decoder"
2781 vp9_mediacodec_hwaccel_deps="mediacodec"
2782 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2783 vp9_vaapi_hwaccel_select="vp9_decoder"
2784 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2785 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2786 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2787 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2788 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2789
2790 # hardware-accelerated codecs
2791 omx_deps="libdl pthreads"
2792 omx_rpi_select="omx"
2793 qsvdec_select="qsv"
2794 qsvenc_select="qsv"
2795 vaapi_encode_deps="vaapi"
2796 v4l2_m2m_deps_any="linux_videodev2_h"
2797
2798 hwupload_cuda_filter_deps="cuda"
2799 scale_npp_filter_deps="cuda libnpp"
2800 scale_cuda_filter_deps="cuda_sdk"
2801 thumbnail_cuda_filter_deps="cuda_sdk"
2802
2803 nvenc_deps="cuda"
2804 nvenc_deps_any="libdl LoadLibrary"
2805 nvenc_encoder_deps="nvenc"
2806
2807 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2808 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2809 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2810 h264_cuvid_decoder_deps="cuda cuvid"
2811 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2812 h264_mediacodec_decoder_deps="mediacodec"
2813 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2814 h264_mmal_decoder_deps="mmal"
2815 h264_nvenc_encoder_deps="nvenc"
2816 h264_omx_encoder_deps="omx"
2817 h264_qsv_decoder_deps="libmfx"
2818 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2819 h264_qsv_encoder_deps="libmfx"
2820 h264_qsv_encoder_select="qsvenc"
2821 h264_rkmpp_decoder_deps="rkmpp"
2822 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2823 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2824 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2825 h264_vda_decoder_deps="vda"
2826 h264_vda_decoder_select="h264_decoder"
2827 h264_vdpau_decoder_deps="vdpau"
2828 h264_vdpau_decoder_select="h264_decoder"
2829 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2830 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2831 hevc_cuvid_decoder_deps="cuda cuvid"
2832 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2833 hevc_mediacodec_decoder_deps="mediacodec"
2834 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2835 hevc_nvenc_encoder_deps="nvenc"
2836 hevc_qsv_decoder_deps="libmfx"
2837 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2838 hevc_qsv_encoder_deps="libmfx"
2839 hevc_qsv_encoder_select="hevcparse qsvenc"
2840 hevc_rkmpp_decoder_deps="rkmpp"
2841 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2842 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2843 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2844 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2845 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2846 mjpeg_cuvid_decoder_deps="cuda cuvid"
2847 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2848 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2849 mpeg1_cuvid_decoder_deps="cuda cuvid"
2850 mpeg1_vdpau_decoder_deps="vdpau"
2851 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2852 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2853 mpeg2_crystalhd_decoder_select="crystalhd"
2854 mpeg2_cuvid_decoder_deps="cuda cuvid"
2855 mpeg2_mmal_decoder_deps="mmal"
2856 mpeg2_mediacodec_decoder_deps="mediacodec"
2857 mpeg2_qsv_decoder_deps="libmfx"
2858 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2859 mpeg2_qsv_encoder_deps="libmfx"
2860 mpeg2_qsv_encoder_select="qsvenc"
2861 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2862 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2863 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2864 mpeg4_crystalhd_decoder_select="crystalhd"
2865 mpeg4_cuvid_decoder_deps="cuda cuvid"
2866 mpeg4_mediacodec_decoder_deps="mediacodec"
2867 mpeg4_mmal_decoder_deps="mmal"
2868 mpeg4_omx_encoder_deps="omx"
2869 mpeg4_vdpau_decoder_deps="vdpau"
2870 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2871 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2872 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2873 mpeg_vdpau_decoder_deps="vdpau"
2874 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2875 msmpeg4_crystalhd_decoder_select="crystalhd"
2876 nvenc_h264_encoder_select="h264_nvenc_encoder"
2877 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2878 vc1_crystalhd_decoder_select="crystalhd"
2879 vc1_cuvid_decoder_deps="cuda cuvid"
2880 vc1_mmal_decoder_deps="mmal"
2881 vc1_vdpau_decoder_deps="vdpau"
2882 vc1_vdpau_decoder_select="vc1_decoder"
2883 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2884 vp8_cuvid_decoder_deps="cuda cuvid"
2885 vp8_mediacodec_decoder_deps="mediacodec"
2886 vp8_qsv_decoder_deps="libmfx"
2887 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2888 vp8_rkmpp_decoder_deps="rkmpp"
2889 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2890 vp8_vaapi_encoder_select="vaapi_encode"
2891 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2892 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2893 vp9_cuvid_decoder_deps="cuda cuvid"
2894 vp9_mediacodec_decoder_deps="mediacodec"
2895 vp9_rkmpp_decoder_deps="rkmpp"
2896 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2897 vp9_vaapi_encoder_select="vaapi_encode"
2898 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2899 wmv3_crystalhd_decoder_select="crystalhd"
2900 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2901
2902 # parsers
2903 h264_parser_select="golomb h264dsp h264parse"
2904 hevc_parser_select="hevcparse"
2905 mpegaudio_parser_select="mpegaudioheader"
2906 mpegvideo_parser_select="mpegvideo"
2907 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2908 vc1_parser_select="vc1dsp"
2909
2910 # bitstream_filters
2911 h264_metadata_bsf_select="cbs_h264"
2912 h264_redundant_pps_bsf_select="cbs_h264"
2913 hevc_metadata_bsf_select="cbs_h265"
2914 mjpeg2jpeg_bsf_select="jpegtables"
2915 mpeg2_metadata_bsf_select="cbs_mpeg2"
2916 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2917
2918 # external libraries
2919 aac_at_decoder_deps="audiotoolbox"
2920 ac3_at_decoder_deps="audiotoolbox"
2921 ac3_at_decoder_select="ac3_parser"
2922 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2923 alac_at_decoder_deps="audiotoolbox"
2924 amr_nb_at_decoder_deps="audiotoolbox"
2925 avisynth_deps_any="libdl LoadLibrary"
2926 avisynth_demuxer_deps="avisynth"
2927 avisynth_demuxer_select="riffdec"
2928 eac3_at_decoder_deps="audiotoolbox"
2929 eac3_at_decoder_select="ac3_parser"
2930 gsm_ms_at_decoder_deps="audiotoolbox"
2931 ilbc_at_decoder_deps="audiotoolbox"
2932 mp1_at_decoder_deps="audiotoolbox"
2933 mp2_at_decoder_deps="audiotoolbox"
2934 mp3_at_decoder_deps="audiotoolbox"
2935 mp1_at_decoder_select="mpegaudioheader"
2936 mp2_at_decoder_select="mpegaudioheader"
2937 mp3_at_decoder_select="mpegaudioheader"
2938 pcm_alaw_at_decoder_deps="audiotoolbox"
2939 pcm_mulaw_at_decoder_deps="audiotoolbox"
2940 qdmc_at_decoder_deps="audiotoolbox"
2941 qdm2_at_decoder_deps="audiotoolbox"
2942 aac_at_encoder_deps="audiotoolbox"
2943 aac_at_encoder_select="audio_frame_queue"
2944 alac_at_encoder_deps="audiotoolbox"
2945 alac_at_encoder_select="audio_frame_queue"
2946 ilbc_at_encoder_deps="audiotoolbox"
2947 ilbc_at_encoder_select="audio_frame_queue"
2948 pcm_alaw_at_encoder_deps="audiotoolbox"
2949 pcm_alaw_at_encoder_select="audio_frame_queue"
2950 pcm_mulaw_at_encoder_deps="audiotoolbox"
2951 pcm_mulaw_at_encoder_select="audio_frame_queue"
2952 chromaprint_muxer_deps="chromaprint"
2953 h264_videotoolbox_encoder_deps="pthreads"
2954 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2955 libcelt_decoder_deps="libcelt"
2956 libfdk_aac_decoder_deps="libfdk_aac"
2957 libfdk_aac_encoder_deps="libfdk_aac"
2958 libfdk_aac_encoder_select="audio_frame_queue"
2959 libgme_demuxer_deps="libgme"
2960 libgsm_decoder_deps="libgsm"
2961 libgsm_encoder_deps="libgsm"
2962 libgsm_ms_decoder_deps="libgsm"
2963 libgsm_ms_encoder_deps="libgsm"
2964 libilbc_decoder_deps="libilbc"
2965 libilbc_encoder_deps="libilbc"
2966 libkvazaar_encoder_deps="libkvazaar"
2967 libmodplug_demuxer_deps="libmodplug"
2968 libmp3lame_encoder_deps="libmp3lame"
2969 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2970 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2971 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2972 libopencore_amrnb_encoder_select="audio_frame_queue"
2973 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2974 libopenh264_decoder_deps="libopenh264"
2975 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2976 libopenh264_encoder_deps="libopenh264"
2977 libopenjpeg_decoder_deps="libopenjpeg"
2978 libopenjpeg_encoder_deps="libopenjpeg"
2979 libopenmpt_demuxer_deps="libopenmpt"
2980 libopus_decoder_deps="libopus"
2981 libopus_encoder_deps="libopus"
2982 libopus_encoder_select="audio_frame_queue"
2983 librsvg_decoder_deps="librsvg"
2984 libshine_encoder_deps="libshine"
2985 libshine_encoder_select="audio_frame_queue"
2986 libspeex_decoder_deps="libspeex"
2987 libspeex_encoder_deps="libspeex"
2988 libspeex_encoder_select="audio_frame_queue"
2989 libtheora_encoder_deps="libtheora"
2990 libtwolame_encoder_deps="libtwolame"
2991 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2992 libvorbis_decoder_deps="libvorbis"
2993 libvorbis_encoder_deps="libvorbis libvorbisenc"
2994 libvorbis_encoder_select="audio_frame_queue"
2995 libvpx_vp8_decoder_deps="libvpx"
2996 libvpx_vp8_encoder_deps="libvpx"
2997 libvpx_vp9_decoder_deps="libvpx"
2998 libvpx_vp9_encoder_deps="libvpx"
2999 libwavpack_encoder_deps="libwavpack"
3000 libwavpack_encoder_select="audio_frame_queue"
3001 libwebp_encoder_deps="libwebp"
3002 libwebp_anim_encoder_deps="libwebp"
3003 libx262_encoder_deps="libx262"
3004 libx264_encoder_deps="libx264"
3005 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3006 libx264rgb_encoder_select="libx264_encoder"
3007 libx265_encoder_deps="libx265"
3008 libxavs_encoder_deps="libxavs"
3009 libxvid_encoder_deps="libxvid"
3010 libzvbi_teletext_decoder_deps="libzvbi"
3011 videotoolbox_suggest="coreservices"
3012 videotoolbox_deps="corefoundation coremedia corevideo"
3013 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3014 videotoolbox_encoder_suggest="vda_framework"
3015
3016 # demuxers / muxers
3017 ac3_demuxer_select="ac3_parser"
3018 aiff_muxer_select="iso_media"
3019 asf_demuxer_select="riffdec"
3020 asf_o_demuxer_select="riffdec"
3021 asf_muxer_select="riffenc"
3022 asf_stream_muxer_select="asf_muxer"
3023 avi_demuxer_select="iso_media riffdec exif"
3024 avi_muxer_select="riffenc"
3025 caf_demuxer_select="iso_media riffdec"
3026 caf_muxer_select="iso_media"
3027 dash_muxer_select="mp4_muxer"
3028 dash_demuxer_deps="libxml2"
3029 dirac_demuxer_select="dirac_parser"
3030 dts_demuxer_select="dca_parser"
3031 dtshd_demuxer_select="dca_parser"
3032 dv_demuxer_select="dvprofile"
3033 dv_muxer_select="dvprofile"
3034 dxa_demuxer_select="riffdec"
3035 eac3_demuxer_select="ac3_parser"
3036 f4v_muxer_select="mov_muxer"
3037 fifo_muxer_deps="threads"
3038 flac_demuxer_select="flac_parser"
3039 hds_muxer_select="flv_muxer"
3040 hls_muxer_select="mpegts_muxer"
3041 hls_muxer_suggest="gcrypt openssl"
3042 image2_alias_pix_demuxer_select="image2_demuxer"
3043 image2_brender_pix_demuxer_select="image2_demuxer"
3044 ipod_muxer_select="mov_muxer"
3045 ismv_muxer_select="mov_muxer"
3046 matroska_audio_muxer_select="matroska_muxer"
3047 matroska_demuxer_select="iso_media riffdec"
3048 matroska_demuxer_suggest="bzlib lzo zlib"
3049 matroska_muxer_select="iso_media riffenc"
3050 mmf_muxer_select="riffenc"
3051 mov_demuxer_select="iso_media riffdec"
3052 mov_demuxer_suggest="zlib"
3053 mov_muxer_select="iso_media riffenc rtpenc_chain"
3054 mp3_demuxer_select="mpegaudio_parser"
3055 mp3_muxer_select="mpegaudioheader"
3056 mp4_muxer_select="mov_muxer"
3057 mpegts_demuxer_select="iso_media"
3058 mpegts_muxer_select="adts_muxer latm_muxer"
3059 mpegtsraw_demuxer_select="mpegts_demuxer"
3060 mxf_d10_muxer_select="mxf_muxer"
3061 mxf_opatom_muxer_select="mxf_muxer"
3062 nut_muxer_select="riffenc"
3063 nuv_demuxer_select="riffdec"
3064 oga_muxer_select="ogg_muxer"
3065 ogg_demuxer_select="dirac_parse"
3066 ogv_muxer_select="ogg_muxer"
3067 opus_muxer_select="ogg_muxer"
3068 psp_muxer_select="mov_muxer"
3069 rtp_demuxer_select="sdp_demuxer"
3070 rtp_muxer_select="golomb"
3071 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3072 rtsp_demuxer_select="http_protocol rtpdec"
3073 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3074 sap_demuxer_select="sdp_demuxer"
3075 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3076 sdp_demuxer_select="rtpdec"
3077 smoothstreaming_muxer_select="ismv_muxer"
3078 spdif_muxer_select="aac_parser"
3079 spx_muxer_select="ogg_muxer"
3080 swf_demuxer_suggest="zlib"
3081 tak_demuxer_select="tak_parser"
3082 tg2_muxer_select="mov_muxer"
3083 tgp_muxer_select="mov_muxer"
3084 vobsub_demuxer_select="mpegps_demuxer"
3085 w64_demuxer_select="wav_demuxer"
3086 w64_muxer_select="wav_muxer"
3087 wav_demuxer_select="riffdec"
3088 wav_muxer_select="riffenc"
3089 webm_muxer_select="iso_media riffenc"
3090 webm_dash_manifest_demuxer_select="matroska_demuxer"
3091 wtv_demuxer_select="mpegts_demuxer riffdec"
3092 wtv_muxer_select="mpegts_muxer riffenc"
3093 xmv_demuxer_select="riffdec"
3094 xwma_demuxer_select="riffdec"
3095
3096 # indevs / outdevs
3097 alsa_indev_deps="alsa"
3098 alsa_outdev_deps="alsa"
3099 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3100 avfoundation_indev_suggest="coregraphics applicationservices"
3101 avfoundation_indev_extralibs="-framework Foundation"
3102 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3103 caca_outdev_deps="libcaca"
3104 decklink_deps_any="libdl LoadLibrary"
3105 decklink_indev_deps="decklink threads"
3106 decklink_indev_extralibs="-lstdc++"
3107 decklink_outdev_deps="decklink threads"
3108 decklink_outdev_extralibs="-lstdc++"
3109 libndi_newtek_indev_deps="libndi_newtek"
3110 libndi_newtek_indev_extralibs="-lndi"
3111 libndi_newtek_outdev_deps="libndi_newtek"
3112 libndi_newtek_outdev_extralibs="-lndi"
3113 dshow_indev_deps="IBaseFilter"
3114 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3115 fbdev_indev_deps="linux_fb_h"
3116 fbdev_outdev_deps="linux_fb_h"
3117 gdigrab_indev_deps="CreateDIBSection"
3118 gdigrab_indev_extralibs="-lgdi32"
3119 gdigrab_indev_select="bmp_decoder"
3120 iec61883_indev_deps="libiec61883"
3121 jack_indev_deps="libjack"
3122 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3123 kmsgrab_indev_deps="libdrm"
3124 lavfi_indev_deps="avfilter"
3125 libcdio_indev_deps="libcdio"
3126 libdc1394_indev_deps="libdc1394"
3127 openal_indev_deps="openal"
3128 opengl_outdev_deps="opengl"
3129 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3130 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3131 pulse_indev_deps="libpulse"
3132 pulse_outdev_deps="libpulse"
3133 sdl2_outdev_deps="sdl2"
3134 sndio_indev_deps="sndio"
3135 sndio_outdev_deps="sndio"
3136 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3137 v4l2_indev_suggest="libv4l2"
3138 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3139 v4l2_outdev_suggest="libv4l2"
3140 vfwcap_indev_deps="vfw32 vfwcap_defines"
3141 xcbgrab_indev_deps="libxcb"
3142 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3143 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3144 xv_outdev_extralibs="-lXv -lX11 -lXext"
3145
3146 # protocols
3147 async_protocol_deps="threads"
3148 bluray_protocol_deps="libbluray"
3149 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3150 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3151 ffrtmpcrypt_protocol_select="tcp_protocol"
3152 ffrtmphttp_protocol_conflict="librtmp_protocol"
3153 ffrtmphttp_protocol_select="http_protocol"
3154 ftp_protocol_select="tcp_protocol"
3155 gopher_protocol_select="network"
3156 http_protocol_select="tcp_protocol"
3157 http_protocol_suggest="zlib"
3158 httpproxy_protocol_select="tcp_protocol"
3159 httpproxy_protocol_suggest="zlib"
3160 https_protocol_select="tls_protocol"
3161 https_protocol_suggest="zlib"
3162 icecast_protocol_select="http_protocol"
3163 librtmp_protocol_deps="librtmp"
3164 librtmpe_protocol_deps="librtmp"
3165 librtmps_protocol_deps="librtmp"
3166 librtmpt_protocol_deps="librtmp"
3167 librtmpte_protocol_deps="librtmp"
3168 libsmbclient_protocol_deps="libsmbclient gplv3"
3169 libssh_protocol_deps="libssh"
3170 mmsh_protocol_select="http_protocol"
3171 mmst_protocol_select="network"
3172 rtmp_protocol_conflict="librtmp_protocol"
3173 rtmp_protocol_select="tcp_protocol"
3174 rtmp_protocol_suggest="zlib"
3175 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3176 rtmpe_protocol_suggest="zlib"
3177 rtmps_protocol_conflict="librtmp_protocol"
3178 rtmps_protocol_select="tls_protocol"
3179 rtmps_protocol_suggest="zlib"
3180 rtmpt_protocol_select="ffrtmphttp_protocol"
3181 rtmpt_protocol_suggest="zlib"
3182 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3183 rtmpte_protocol_suggest="zlib"
3184 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3185 rtmpts_protocol_suggest="zlib"
3186 rtp_protocol_select="udp_protocol"
3187 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3188 sctp_protocol_select="network"
3189 srtp_protocol_select="rtp_protocol srtp"
3190 tcp_protocol_select="network"
3191 tls_gnutls_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol"
3192 tls_gnutls_protocol_deps="gnutls"
3193 tls_gnutls_protocol_select="tcp_protocol"
3194 tls_openssl_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol"
3195 tls_openssl_protocol_deps="openssl"
3196 tls_openssl_protocol_select="tcp_protocol"
3197 tls_schannel_protocol_deps="schannel"
3198 tls_schannel_protocol_select="tcp_protocol"
3199 tls_securetransport_protocol_deps="securetransport"
3200 tls_securetransport_protocol_select="tcp_protocol"
3201 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3202 udp_protocol_select="network"
3203 udplite_protocol_select="network"
3204 unix_protocol_deps="sys_un_h"
3205 unix_protocol_select="network"
3206
3207 # filters
3208 afftfilt_filter_deps="avcodec"
3209 afftfilt_filter_select="fft"
3210 afir_filter_deps="avcodec"
3211 afir_filter_select="fft"
3212 amovie_filter_deps="avcodec avformat"
3213 aresample_filter_deps="swresample"
3214 ass_filter_deps="libass"
3215 atempo_filter_deps="avcodec"
3216 atempo_filter_select="rdft"
3217 azmq_filter_deps="libzmq"
3218 blackframe_filter_deps="gpl"
3219 boxblur_filter_deps="gpl"
3220 bs2b_filter_deps="libbs2b"
3221 colormatrix_filter_deps="gpl"
3222 coreimage_filter_deps="coreimage appkit"
3223 coreimage_filter_extralibs="-framework OpenGL"
3224 coreimagesrc_filter_deps="coreimage appkit"
3225 coreimagesrc_filter_extralibs="-framework OpenGL"
3226 cover_rect_filter_deps="avcodec avformat gpl"
3227 cropdetect_filter_deps="gpl"
3228 deinterlace_qsv_filter_deps="libmfx"
3229 deinterlace_vaapi_filter_deps="vaapi"
3230 delogo_filter_deps="gpl"
3231 deshake_filter_select="pixelutils"
3232 deshake_filter_suggest="opencl"
3233 drawtext_filter_deps="libfreetype"
3234 drawtext_filter_suggest="libfontconfig libfribidi"
3235 elbg_filter_deps="avcodec"
3236 eq_filter_deps="gpl"
3237 fftfilt_filter_deps="avcodec"
3238 fftfilt_filter_select="rdft"
3239 find_rect_filter_deps="avcodec avformat gpl"
3240 firequalizer_filter_deps="avcodec"
3241 firequalizer_filter_select="rdft"
3242 flite_filter_deps="libflite"
3243 framerate_filter_select="pixelutils"
3244 frei0r_filter_deps="frei0r libdl"
3245 frei0r_src_filter_deps="frei0r libdl"
3246 fspp_filter_deps="gpl"
3247 geq_filter_deps="gpl"
3248 histeq_filter_deps="gpl"
3249 hqdn3d_filter_deps="gpl"
3250 interlace_filter_deps="gpl"
3251 kerndeint_filter_deps="gpl"
3252 ladspa_filter_deps="ladspa libdl"
3253 mcdeint_filter_deps="avcodec gpl"
3254 movie_filter_deps="avcodec avformat"
3255 mpdecimate_filter_deps="gpl"
3256 mpdecimate_filter_select="pixelutils"
3257 mptestsrc_filter_deps="gpl"
3258 negate_filter_deps="lut_filter"
3259 nnedi_filter_deps="gpl"
3260 ocr_filter_deps="libtesseract"
3261 ocv_filter_deps="libopencv"
3262 owdenoise_filter_deps="gpl"
3263 pan_filter_deps="swresample"
3264 perspective_filter_deps="gpl"
3265 phase_filter_deps="gpl"
3266 pp7_filter_deps="gpl"
3267 pp_filter_deps="gpl postproc"
3268 pullup_filter_deps="gpl"
3269 removelogo_filter_deps="avcodec avformat swscale"
3270 repeatfields_filter_deps="gpl"
3271 resample_filter_deps="avresample"
3272 rubberband_filter_deps="librubberband"
3273 sab_filter_deps="gpl swscale"
3274 scale2ref_filter_deps="swscale"
3275 scale_filter_deps="swscale"
3276 scale_qsv_filter_deps="libmfx"
3277 select_filter_select="pixelutils"
3278 showcqt_filter_deps="avcodec avformat swscale"
3279 showcqt_filter_suggest="libfontconfig libfreetype"
3280 showcqt_filter_select="fft"
3281 showfreqs_filter_deps="avcodec"
3282 showfreqs_filter_select="fft"
3283 showspectrum_filter_deps="avcodec"
3284 showspectrum_filter_select="fft"
3285 showspectrumpic_filter_deps="avcodec"
3286 showspectrumpic_filter_select="fft"
3287 signature_filter_deps="gpl avcodec avformat"
3288 smartblur_filter_deps="gpl swscale"
3289 sofalizer_filter_deps="libmysofa avcodec"
3290 sofalizer_filter_select="fft"
3291 spectrumsynth_filter_deps="avcodec"
3292 spectrumsynth_filter_select="fft"
3293 spp_filter_deps="gpl avcodec"
3294 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3295 stereo3d_filter_deps="gpl"
3296 subtitles_filter_deps="avformat avcodec libass"
3297 super2xsai_filter_deps="gpl"
3298 pixfmts_super2xsai_test_deps="super2xsai_filter"
3299 tinterlace_filter_deps="gpl"
3300 tinterlace_merge_test_deps="tinterlace_filter"
3301 tinterlace_pad_test_deps="tinterlace_filter"
3302 tonemap_filter_deps="const_nan"
3303 uspp_filter_deps="gpl avcodec"
3304 unsharp_filter_suggest="opencl"
3305 vaguedenoiser_filter_deps="gpl"
3306 vidstabdetect_filter_deps="libvidstab"
3307 vidstabtransform_filter_deps="libvidstab"
3308 libvmaf_filter_deps="libvmaf"
3309 zmq_filter_deps="libzmq"
3310 zoompan_filter_deps="swscale"
3311 zscale_filter_deps="libzimg const_nan"
3312 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3313
3314 # examples
3315 avio_dir_cmd_deps="avformat avutil"
3316 avio_reading_deps="avformat avcodec avutil"
3317 decode_audio_example_deps="avcodec avutil"
3318 decode_video_example_deps="avcodec avutil"
3319 demuxing_decoding_example_deps="avcodec avformat avutil"
3320 encode_audio_example_deps="avcodec avutil"
3321 encode_video_example_deps="avcodec avutil"
3322 extract_mvs_example_deps="avcodec avformat avutil"
3323 filter_audio_example_deps="avfilter avutil"
3324 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3325 filtering_video_example_deps="avfilter avcodec avformat avutil"
3326 http_multiclient_example_deps="avformat avutil fork"
3327 hw_decode_example_deps="avcodec avformat avutil"
3328 metadata_example_deps="avformat avutil"
3329 muxing_example_deps="avcodec avformat avutil swscale"
3330 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3331 remuxing_example_deps="avcodec avformat avutil"
3332 resampling_audio_example_deps="avutil swresample"
3333 scaling_video_example_deps="avutil swscale"
3334 transcode_aac_example_deps="avcodec avformat swresample"
3335 transcoding_example_deps="avfilter avcodec avformat avutil"
3336
3337 # EXTRALIBS_LIST
3338 cpu_init_extralibs="pthreads_extralibs"
3339 cws2fws_extralibs="zlib_extralibs"
3340
3341 # libraries, in linking order
3342 avcodec_deps="avutil"
3343 avcodec_suggest="libm"
3344 avcodec_select="null_bsf"
3345 avdevice_deps="avformat avcodec avutil"
3346 avdevice_suggest="libm"
3347 avfilter_deps="avutil"
3348 avfilter_suggest="libm"
3349 avformat_deps="avcodec avutil"
3350 avformat_suggest="libm network"
3351 avresample_deps="avutil"
3352 avresample_suggest="libm"
3353 avutil_suggest="clock_gettime libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3354 postproc_deps="avutil gpl"
3355 postproc_suggest="libm"
3356 swresample_deps="avutil"
3357 swresample_suggest="libm libsoxr"
3358 swscale_deps="avutil"
3359 swscale_suggest="libm"
3360
3361 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3362 avfilter_extralibs="pthreads_extralibs"
3363 avutil_extralibs="nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3364
3365 # programs
3366 ffmpeg_deps="avcodec avfilter avformat swresample"
3367 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3368                null_filter
3369                trim_filter"
3370 ffmpeg_suggest="ole32 psapi shell32"
3371 ffplay_deps="avcodec avformat swscale swresample sdl2"
3372 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3373 ffplay_suggest="shell32"
3374 ffprobe_deps="avcodec avformat"
3375 ffprobe_suggest="shell32"
3376 ffserver_deps="avformat fork sarestart"
3377 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3378
3379 # documentation
3380 podpages_deps="perl"
3381 manpages_deps="perl pod2man"
3382 htmlpages_deps="perl"
3383 htmlpages_deps_any="makeinfo_html texi2html"
3384 txtpages_deps="perl makeinfo"
3385 doc_deps_any="manpages htmlpages podpages txtpages"
3386
3387 # default parameters
3388
3389 logfile="ffbuild/config.log"
3390
3391 # installation paths
3392 prefix_default="/usr/local"
3393 bindir_default='${prefix}/bin'
3394 datadir_default='${prefix}/share/ffmpeg'
3395 docdir_default='${prefix}/share/doc/ffmpeg'
3396 incdir_default='${prefix}/include'
3397 libdir_default='${prefix}/lib'
3398 mandir_default='${prefix}/share/man'
3399
3400 # toolchain
3401 ar_default="ar"
3402 cc_default="gcc"
3403 cxx_default="g++"
3404 host_cc_default="gcc"
3405 doxygen_default="doxygen"
3406 install="install"
3407 ln_s_default="ln -s -f"
3408 nm_default="nm -g"
3409 pkg_config_default=pkg-config
3410 ranlib_default="ranlib"
3411 strip_default="strip"
3412 version_script='--version-script'
3413 x86asmexe_default="nasm"
3414 windres_default="windres"
3415 nvcc_default="nvcc"
3416 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3417 striptype="direct"
3418
3419 # OS
3420 target_os_default=$(tolower $(uname -s))
3421 host_os=$target_os_default
3422
3423 # machine
3424 if test "$target_os_default" = aix; then
3425     arch_default=$(uname -p)
3426     strip_default="strip -X32_64"
3427 else
3428     arch_default=$(uname -m)
3429 fi
3430 cpu="generic"
3431 intrinsics="none"
3432
3433 # configurable options
3434 enable $PROGRAM_LIST
3435 enable $DOCUMENT_LIST
3436 enable $EXAMPLE_LIST
3437 enable $(filter_out avresample $LIBRARY_LIST)
3438 enable stripping
3439
3440 enable asm
3441 enable debug
3442 enable doc
3443 enable faan faandct faanidct
3444 enable optimizations
3445 enable runtime_cpudetect
3446 enable safe_bitstream_reader
3447 enable static
3448 enable swscale_alpha
3449 enable valgrind_backtrace
3450
3451 sws_max_filter_size_default=256
3452 set_default sws_max_filter_size
3453
3454 # internal components are enabled by default
3455 enable $EXTRALIBS_LIST
3456
3457 # Avoid external, non-system, libraries getting enabled by dependency resolution
3458 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3459
3460 # build settings
3461 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3462 LIBPREF="lib"
3463 LIBSUF=".a"
3464 FULLNAME='$(NAME)$(BUILDSUF)'
3465 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3466 SLIBPREF="lib"
3467 SLIBSUF=".so"
3468 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3469 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3470 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3471 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3472 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3473 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3474 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3475
3476 asflags_filter=echo
3477 cflags_filter=echo
3478 ldflags_filter=echo
3479
3480 AS_C='-c'
3481 AS_O='-o $@'
3482 CC_C='-c'
3483 CC_E='-E -o $@'
3484 CC_O='-o $@'
3485 CXX_C='-c'
3486 CXX_O='-o $@'
3487 OBJCC_C='-c'
3488 OBJCC_E='-E -o $@'
3489 OBJCC_O='-o $@'
3490 X86ASM_O='-o $@'
3491 LD_O='-o $@'
3492 LD_LIB='-l%'
3493 LD_PATH='-L'
3494 HOSTCC_C='-c'
3495 HOSTCC_E='-E -o $@'
3496 HOSTCC_O='-o $@'
3497 HOSTLD_O='-o $@'
3498 NVCC_C='-c'
3499 NVCC_O='-o $@'
3500
3501 host_extralibs='-lm'
3502 host_cflags_filter=echo
3503 host_ldflags_filter=echo
3504
3505 target_path='$(CURDIR)'
3506
3507 # since the object filename is not given with the -MM flag, the compiler
3508 # is only able to print the basename, and we must add the path ourselves
3509 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3510 DEPFLAGS='-MM'
3511
3512 mkdir -p ffbuild
3513
3514 # find source path
3515 if test -f configure; then
3516     source_path=.
3517 else
3518     source_path=$(cd $(dirname "$0"); pwd)
3519     case "$source_path" in
3520         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3521     esac
3522     test -e "$source_path/config.h" &&
3523         die "Out of tree builds are impossible with config.h in source dir."
3524 fi
3525
3526 for v in "$@"; do
3527     r=${v#*=}
3528     l=${v%"$r"}
3529     r=$(sh_quote "$r")
3530     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3531 done
3532
3533 find_things(){
3534     thing=$1
3535     pattern=$2
3536     file=$source_path/$3
3537     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3538 }
3539
3540 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3541 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3542 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3543 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3544 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3545 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3546 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3547 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3548 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3549
3550 find_things_extern(){
3551     thing=$1
3552     pattern=$2
3553     file=$source_path/$3
3554     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3555 }
3556
3557 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3558 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3559
3560 AVCODEC_COMPONENTS_LIST="
3561     $BSF_LIST
3562     $DECODER_LIST
3563     $ENCODER_LIST
3564     $HWACCEL_LIST
3565     $PARSER_LIST
3566 "
3567
3568 AVDEVICE_COMPONENTS_LIST="
3569     $INDEV_LIST
3570     $OUTDEV_LIST
3571 "
3572
3573 AVFILTER_COMPONENTS_LIST="
3574     $FILTER_LIST
3575 "
3576
3577 AVFORMAT_COMPONENTS_LIST="
3578     $DEMUXER_LIST
3579     $MUXER_LIST
3580     $PROTOCOL_LIST
3581 "
3582
3583 ALL_COMPONENTS="
3584     $AVCODEC_COMPONENTS_LIST
3585     $AVDEVICE_COMPONENTS_LIST
3586     $AVFILTER_COMPONENTS_LIST
3587     $AVFORMAT_COMPONENTS_LIST
3588 "
3589
3590 for n in $COMPONENT_LIST; do
3591     v=$(toupper ${n%s})_LIST
3592     eval enable \$$v
3593     eval ${n}_if_any="\$$v"
3594 done
3595
3596 enable $ARCH_EXT_LIST
3597
3598 die_unknown(){
3599     echo "Unknown option \"$1\"."
3600     echo "See $0 --help for available options."
3601     exit 1
3602 }
3603
3604 print_in_columns() {
3605     cols=$(expr $ncols / 24)
3606     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3607 }
3608
3609 show_list() {
3610     suffix=_$1
3611     shift
3612     echo $* | sed s/$suffix//g | print_in_columns
3613     exit 0
3614 }
3615
3616 rand_list(){
3617     IFS=', '
3618     set -- $*
3619     unset IFS
3620     for thing; do
3621         comp=${thing%:*}
3622         prob=${thing#$comp}
3623         prob=${prob#:}
3624         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3625         echo "prob ${prob:-0.5}"
3626         printf '%s\n' $comp
3627     done
3628 }
3629
3630 do_random(){
3631     action=$1
3632     shift
3633     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3634     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3635 }
3636
3637 for opt do
3638     optval="${opt#*=}"
3639     case "$opt" in
3640         --extra-ldflags=*)
3641             add_ldflags $optval
3642         ;;
3643         --extra-ldexeflags=*)
3644             add_ldexeflags $optval
3645         ;;
3646         --extra-ldlibflags=*)
3647             add_ldlibflags $optval
3648         ;;
3649         --extra-libs=*)
3650             add_extralibs $optval
3651         ;;
3652         --disable-devices)
3653             disable $INDEV_LIST $OUTDEV_LIST
3654         ;;
3655         --enable-debug=*)
3656             debuglevel="$optval"
3657         ;;
3658         --disable-programs)
3659             disable $PROGRAM_LIST
3660         ;;
3661         --disable-everything)
3662             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3663         ;;
3664         --disable-all)
3665             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3666             disable $LIBRARY_LIST $PROGRAM_LIST doc
3667             enable avutil
3668         ;;
3669         --enable-random|--disable-random)
3670             action=${opt%%-random}
3671             do_random ${action#--} $COMPONENT_LIST
3672         ;;
3673         --enable-random=*|--disable-random=*)
3674             action=${opt%%-random=*}
3675             do_random ${action#--} $optval
3676         ;;
3677         --enable-sdl)
3678             enable sdl2
3679         ;;
3680         --enable-*=*|--disable-*=*)
3681             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3682             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3683             eval list=\$$(toupper $thing)_LIST
3684             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3685             list=$(filter "$name" $list)
3686             [ "$list" = "" ] && warn "Option $opt did not match anything"
3687             $action $list
3688         ;;
3689         --enable-yasm|--disable-yasm)
3690             warn "The ${opt} option is only provided for compatibility and will be\n"\
3691                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3692             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3693         ;;
3694         --yasmexe=*)
3695             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3696                  "removed in the future. Use --x86asmexe instead."
3697             x86asmexe="$optval"
3698         ;;
3699         --enable-?*|--disable-?*)
3700             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3701             if is_in $option $COMPONENT_LIST; then
3702                 test $action = disable && action=unset
3703                 eval $action \$$(toupper ${option%s})_LIST
3704             elif is_in $option $CMDLINE_SELECT; then
3705                 $action $option
3706             else
3707                 die_unknown $opt
3708             fi
3709         ;;
3710         --list-*)
3711             NAME="${opt#--list-}"
3712             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3713             NAME=${NAME%s}
3714             eval show_list $NAME \$$(toupper $NAME)_LIST
3715         ;;
3716         --help|-h) show_help
3717         ;;
3718         --quiet|-q) quiet=yes
3719         ;;
3720         --fatal-warnings) enable fatal_warnings
3721         ;;
3722         --libfuzzer=*)
3723             libfuzzer_path="$optval"
3724         ;;
3725         *)
3726             optname="${opt%%=*}"
3727             optname="${optname#--}"
3728             optname=$(echo "$optname" | sed 's/-/_/g')
3729             if is_in $optname $CMDLINE_SET; then
3730                 eval $optname='$optval'
3731             elif is_in $optname $CMDLINE_APPEND; then
3732                 append $optname "$optval"
3733             else
3734                 die_unknown $opt
3735             fi
3736         ;;
3737     esac
3738 done
3739
3740 for e in $env; do
3741     eval "export $e"
3742 done
3743
3744 if disabled autodetect; then
3745
3746     # Unless iconv is explicitely disabled by the user, we still want to probe
3747     # for the iconv from the libc.
3748     disabled iconv || enable libc_iconv
3749
3750     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3751     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3752 fi
3753 # Mark specifically enabled, but normally autodetected libraries as requested.
3754 for lib in $AUTODETECT_LIBS; do
3755     enabled $lib && request $lib
3756 done
3757 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3758 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3759 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3760
3761 disabled logging && logfile=/dev/null
3762
3763 die_license_disabled() {
3764     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3765 }
3766
3767 die_license_disabled_gpl() {
3768     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3769 }
3770
3771 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3772 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3773
3774 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3775 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3776
3777 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3778
3779 # Disable all the library-specific components if the library itself
3780 # is disabled, see AVCODEC_LIST and following _LIST variables.
3781
3782 disable_components(){
3783     disabled ${1} && disable $(
3784         eval components="\$$(toupper ${1})_COMPONENTS"
3785         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3786     )
3787 }
3788
3789 map 'disable_components $v' $LIBRARY_LIST
3790
3791 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3792 set >> $logfile
3793
3794 test -n "$valgrind" && toolchain="valgrind-memcheck"
3795
3796 enabled ossfuzz && {
3797     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3798     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3799 }
3800
3801 case "$toolchain" in
3802     *-asan)
3803         cc_default="${toolchain%-asan}"
3804         add_cflags  -fsanitize=address
3805         add_ldflags -fsanitize=address
3806     ;;
3807     *-msan)
3808         cc_default="${toolchain%-msan}"
3809         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3810         add_ldflags -fsanitize=memory
3811     ;;
3812     *-tsan)
3813         cc_default="${toolchain%-tsan}"
3814         add_cflags  -fsanitize=thread -fPIE
3815         add_ldflags -fsanitize=thread -pie
3816         case "$toolchain" in
3817             gcc-tsan)
3818                 add_cflags  -fPIC
3819                 add_ldflags -fPIC
3820                 ;;
3821         esac
3822     ;;
3823     *-usan)
3824         cc_default="${toolchain%-usan}"
3825         add_cflags  -fsanitize=undefined
3826         add_ldflags -fsanitize=undefined
3827     ;;
3828     valgrind-*)
3829         target_exec_default="valgrind"
3830         case "$toolchain" in
3831             valgrind-massif)
3832                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3833                 ;;
3834             valgrind-memcheck)
3835                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3836                 ;;
3837         esac
3838     ;;
3839     msvc)
3840         # Check whether the current MSVC version needs the C99 converter.
3841         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3842         # support enough of C99 to build ffmpeg. Default to the new
3843         # behaviour if the regexp was unable to match anything, since this
3844         # successfully parses the version number of existing supported
3845         # versions that require the converter (MSVC 2010 and 2012).
3846         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3847         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3848             cc_default="cl"
3849             cxx_default="cl"
3850         else
3851             cc_default="c99wrap cl"
3852             cxx_default="c99wrap cl"
3853         fi
3854         ld_default="$source_path/compat/windows/mslink"
3855         nm_default="dumpbin -symbols"
3856         ar_default="lib"
3857         case "$arch" in
3858         arm*)
3859             as_default="armasm"
3860             ;;
3861         esac
3862         target_os_default="win32"
3863         # Use a relative path for TMPDIR. This makes sure all the
3864         # ffconf temp files are written with a relative path, avoiding
3865         # issues with msys/win32 path conversion for MSVC parameters
3866         # such as -Fo<file> or -out:<file>.
3867         TMPDIR=.
3868     ;;
3869     icl)
3870         cc_default="icl"
3871         ld_default="xilink"
3872         nm_default="dumpbin -symbols"
3873         ar_default="xilib"
3874         target_os_default="win32"
3875         TMPDIR=.
3876     ;;
3877     gcov)
3878         add_cflags  -fprofile-arcs -ftest-coverage
3879         add_ldflags -fprofile-arcs -ftest-coverage
3880     ;;
3881     llvm-cov)
3882         add_cflags -fprofile-arcs -ftest-coverage
3883         add_ldflags --coverage
3884     ;;
3885     hardened)
3886         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3887         add_cflags   -fno-strict-overflow -fstack-protector-all
3888         add_ldflags  -Wl,-z,relro -Wl,-z,now
3889         add_cflags   -fPIE
3890         add_ldexeflags -fPIE -pie
3891     ;;
3892     ?*)
3893         die "Unknown toolchain $toolchain"
3894     ;;
3895 esac
3896
3897 test -n "$cross_prefix" && enable cross_compile
3898
3899 if enabled cross_compile; then
3900     test -n "$arch" && test -n "$target_os" ||
3901         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3902 fi
3903
3904 ar_default="${cross_prefix}${ar_default}"
3905 cc_default="${cross_prefix}${cc_default}"
3906 cxx_default="${cross_prefix}${cxx_default}"
3907 nm_default="${cross_prefix}${nm_default}"
3908 pkg_config_default="${cross_prefix}${pkg_config_default}"
3909 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3910     ranlib_default="${cross_prefix}${ranlib_default} -D"
3911 else
3912     ranlib_default="${cross_prefix}${ranlib_default}"
3913 fi
3914 strip_default="${cross_prefix}${strip_default}"
3915 windres_default="${cross_prefix}${windres_default}"
3916
3917 sysinclude_default="${sysroot}/usr/include"
3918
3919 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3920     target_exec target_os x86asmexe nvcc
3921 enabled cross_compile || host_cc_default=$cc
3922 set_default host_cc
3923
3924 pkg_config_fail_message=""
3925 if ! $pkg_config --version >/dev/null 2>&1; then
3926     warn "$pkg_config not found, library detection may fail."
3927     pkg_config=false
3928 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3929     pkg_config_fail_message="
3930 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3931 fi
3932
3933 if test $doxygen != $doxygen_default && \
3934   ! $doxygen --version >/dev/null 2>&1; then
3935     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3936 fi
3937
3938 exesuf() {
3939     case $1 in
3940         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3941     esac
3942 }
3943
3944 EXESUF=$(exesuf $target_os)
3945 HOSTEXESUF=$(exesuf $host_os)
3946
3947 # set temporary file name
3948 : ${TMPDIR:=$TEMPDIR}
3949 : ${TMPDIR:=$TMP}
3950 : ${TMPDIR:=/tmp}
3951
3952 if [ -n "$tempprefix" ] ; then
3953     mktemp(){
3954         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3955         echo "$tmpname"
3956         mkdir "$tmpname"
3957     }
3958 elif ! check_cmd mktemp -u XXXXXX; then
3959     # simple replacement for missing mktemp
3960     # NOT SAFE FOR GENERAL USE
3961     mktemp(){
3962         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3963         echo "$tmpname"
3964         mkdir "$tmpname"
3965     }
3966 fi
3967
3968 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3969     die "Unable to create temporary directory in $TMPDIR."
3970
3971 tmpfile(){
3972     tmp="${FFTMPDIR}/test"$2
3973     (set -C; exec > $tmp) 2> /dev/null ||
3974         die "Unable to create temporary file in $FFTMPDIR."
3975     eval $1=$tmp
3976 }
3977
3978 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3979 trap 'exit 2' INT
3980
3981 tmpfile TMPASM .asm
3982 tmpfile TMPC   .c
3983 tmpfile TMPCPP .cpp
3984 tmpfile TMPE   $EXESUF
3985 tmpfile TMPH   .h
3986 tmpfile TMPM   .m
3987 tmpfile TMPO   .o
3988 tmpfile TMPS   .S
3989 tmpfile TMPSH  .sh
3990 tmpfile TMPV   .ver
3991
3992 unset -f mktemp
3993
3994 chmod +x $TMPE
3995
3996 # make sure we can execute files in $TMPDIR
3997 cat > $TMPSH 2>> $logfile <<EOF
3998 #! /bin/sh
3999 EOF
4000 chmod +x $TMPSH >> $logfile 2>&1
4001 if ! $TMPSH >> $logfile 2>&1; then
4002     cat <<EOF
4003 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4004 variable to another directory and make sure that it is not mounted noexec.
4005 EOF
4006     die "Sanity test failed."
4007 fi
4008
4009 armasm_flags(){
4010     for flag; do
4011         case $flag in
4012             # Filter out MSVC cl.exe options from cflags that shouldn't
4013             # be passed to gas-preprocessor
4014             -M[TD]*)                                            ;;
4015             *)                  echo $flag                      ;;
4016         esac
4017    done
4018 }
4019
4020 ccc_flags(){
4021     for flag; do
4022         case $flag in
4023             -std=c99)           echo -c99                       ;;
4024             -mcpu=*)            echo -arch ${flag#*=}           ;;
4025             -mieee)             echo -ieee                      ;;
4026             -O*|-fast)          echo $flag                      ;;
4027             -fno-math-errno)    echo -assume nomath_errno       ;;
4028             -g)                 echo -g3                        ;;
4029             -Wall)              echo -msg_enable level2         ;;
4030             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
4031             -Wl,*)              echo $flag                      ;;
4032             -f*|-W*)                                            ;;
4033             *)                  echo $flag                      ;;
4034         esac
4035    done
4036 }
4037
4038 cparser_flags(){
4039     for flag; do
4040         case $flag in
4041             -Wno-switch)             echo -Wno-switch-enum ;;
4042             -Wno-format-zero-length) ;;
4043             -Wdisabled-optimization) ;;
4044             -Wno-pointer-sign)       echo -Wno-other ;;
4045             *)                       echo $flag ;;
4046         esac
4047     done
4048 }
4049
4050 msvc_common_flags(){
4051     for flag; do
4052         case $flag in
4053             # In addition to specifying certain flags under the compiler
4054             # specific filters, they must be specified here as well or else the
4055             # generic catch all at the bottom will print the original flag.
4056             -Wall)                ;;
4057             -Wextra)              ;;
4058             -std=c99)             ;;
4059             # Common flags
4060             -fomit-frame-pointer) ;;
4061             -g)                   echo -Z7 ;;
4062             -fno-math-errno)      ;;
4063             -fno-common)          ;;
4064             -fno-signed-zeros)    ;;
4065             -fPIC)                ;;
4066             -mthumb)              ;;
4067             -march=*)             ;;
4068             -lz)                  echo zlib.lib ;;
4069             -lx264)               echo libx264.lib ;;
4070             -lstdc++)             ;;
4071             -l*)                  echo ${flag#-l}.lib ;;
4072             -LARGEADDRESSAWARE)   echo $flag ;;
4073             -L*)                  echo -libpath:${flag#-L} ;;
4074             *)                    echo $flag ;;
4075         esac
4076     done
4077 }
4078
4079 msvc_flags(){
4080     msvc_common_flags "$@"
4081     for flag; do
4082         case $flag in
4083             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4084                                        -wd4554 ;;
4085             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4086                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4087                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4088                                        -wd4307 \
4089                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4090         esac
4091     done
4092 }
4093
4094 icl_flags(){
4095     msvc_common_flags "$@"
4096     for flag; do
4097         case $flag in
4098             # Despite what Intel's documentation says -Wall, which is supported
4099             # on Windows, does enable remarks so disable them here.
4100             -Wall)                echo $flag -Qdiag-disable:remark ;;
4101             -std=c99)             echo -Qstd=c99 ;;
4102             -flto)                echo -ipo ;;
4103         esac
4104     done
4105 }
4106
4107 icc_flags(){
4108     for flag; do
4109         case $flag in
4110             -flto)                echo -ipo ;;
4111             *)                    echo $flag ;;
4112         esac
4113     done
4114 }
4115
4116 pgi_flags(){
4117     for flag; do
4118         case $flag in
4119             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4120             -fomit-frame-pointer) echo -Mnoframe ;;
4121             -g)                   echo -gopt ;;
4122             *)                    echo $flag ;;
4123         esac
4124     done
4125 }
4126
4127 suncc_flags(){
4128     for flag; do
4129         case $flag in
4130             -march=*|-mcpu=*)
4131                 case "${flag#*=}" in
4132                     native)                   echo -xtarget=native       ;;
4133                     v9|niagara)               echo -xarch=sparc          ;;
4134                     ultrasparc)               echo -xarch=sparcvis       ;;
4135                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4136                     i586|pentium)             echo -xchip=pentium        ;;
4137                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4138                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4139                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4140                     pentium4*)          echo -xtarget=pentium4           ;;
4141                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4142                     *-sse3)             echo -xarch=sse3                 ;;
4143                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4144                     bonnell)                   echo -xarch=ssse3         ;;
4145                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4146                     westmere)                  echo -xtarget=westmere    ;;
4147                     silvermont)                echo -xarch=sse4_2        ;;
4148                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4149                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4150                                                echo -xarch=avx           ;;
4151                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4152                     btver1)                    echo -xarch=amdsse4a      ;;
4153                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4154                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4155                     k8|opteron|athlon64|athlon-fx)
4156                                                echo -xarch=sse2a         ;;
4157                     athlon*)                   echo -xarch=pentium_proa  ;;
4158                 esac
4159                 ;;
4160             -std=c99)             echo -xc99              ;;
4161             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4162             -fPIC)                echo -KPIC -xcode=pic32 ;;
4163             -W*,*)                echo $flag              ;;
4164             -f*-*|-W*|-mimpure-text)                      ;;
4165             -shared)              echo -G                 ;;
4166             *)                    echo $flag              ;;
4167         esac
4168     done
4169 }
4170
4171 tms470_flags(){
4172     for flag; do
4173         case $flag in
4174             -march=*|-mcpu=*)
4175                 case "${flag#*=}" in
4176                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4177                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4178                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4179                     armv6*|arm11*)          echo -mv=6   ;;
4180                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4181                                             echo -mv=5e  ;;
4182                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4183                 esac
4184                 ;;
4185             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4186             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4187             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4188             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4189             -msoft-float)   echo --float_support=vfplib       ;;
4190             -O[0-3]|-mf=*)  echo $flag                        ;;
4191             -g)             echo -g -mn                       ;;
4192             -pds=*)         echo $flag                        ;;
4193             -D*|-I*)        echo $flag                        ;;
4194             --gcc|--abi=*)  echo $flag                        ;;
4195             -me)            echo $flag                        ;;
4196         esac
4197     done
4198 }
4199
4200 probe_cc(){
4201     pfx=$1
4202     _cc=$2
4203     first=$3
4204
4205     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4206     unset _ld_o _ldflags _ld_lib _ld_path
4207     unset _depflags _DEPCMD _DEPFLAGS
4208     _flags_filter=echo
4209
4210     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4211         true # no-op to avoid reading stdin in following checks
4212     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4213         _type=llvm_gcc
4214         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4215         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4216         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4217         _cflags_speed='-O3'
4218         _cflags_size='-Os'
4219     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4220         _type=gcc
4221         gcc_version=$($_cc --version | head -n1)
4222         gcc_basever=$($_cc -dumpversion)
4223         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4224         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4225         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4226         case $gcc_basever in
4227             2) ;;
4228             2.*) ;;
4229             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4230         esac
4231         if [ "$first" = true ]; then
4232             case $gcc_basever in
4233                 4.2*)
4234                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4235             esac
4236         fi
4237         _cflags_speed='-O3'
4238         _cflags_size='-Os'
4239     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4240         _type=icc
4241         _ident=$($_cc --version | head -n1)
4242         _depflags='-MMD'
4243         _cflags_speed='-O3'
4244         _cflags_size='-Os'
4245         _cflags_noopt='-O1'
4246         _flags_filter=icc_flags
4247     elif $_cc -v 2>&1 | grep -q xlc; then
4248         _type=xlc
4249         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4250         _cflags_speed='-O5'
4251         _cflags_size='-O5 -qcompact'
4252     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4253         _type=ccc
4254         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4255         _DEPFLAGS='-M'
4256         _cflags_speed='-fast'
4257         _cflags_size='-O1'
4258         _flags_filter=ccc_flags
4259     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4260         test -d "$sysroot" || die "No valid sysroot specified."
4261         _type=armcc
4262         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4263         armcc_conf="$PWD/armcc.conf"
4264         $_cc --arm_linux_configure                 \
4265              --arm_linux_config_file="$armcc_conf" \
4266              --configure_sysroot="$sysroot"        \
4267              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4268              die "Error creating armcc configuration file."
4269         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4270         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4271         as_default="${cross_prefix}gcc"
4272         _depflags='-MMD'
4273         _cflags_speed='-O3'
4274         _cflags_size='-Os'
4275     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4276         _type=tms470
4277         _ident=$($_cc -version | head -n1 | tr -s ' ')
4278         _flags='--gcc --abi=eabi -me'
4279         _cc_e='-ppl -fe=$@'
4280         _cc_o='-fe=$@'
4281         _depflags='-ppa -ppd=$(@:.o=.d)'
4282         _cflags_speed='-O3 -mf=5'
4283         _cflags_size='-O3 -mf=2'
4284         _flags_filter=tms470_flags
4285     elif $_cc -v 2>&1 | grep -q clang; then
4286         _type=clang
4287         _ident=$($_cc --version 2>/dev/null | head -n1)
4288         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4289         _cflags_speed='-O3'
4290         _cflags_size='-Oz'
4291     elif $_cc -V 2>&1 | grep -q Sun; then
4292         _type=suncc
4293         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4294         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4295         _DEPFLAGS='-xM1 -xc99'
4296         _ldflags='-std=c99'
4297         _cflags_speed='-O5'
4298         _cflags_size='-O5 -xspace'
4299         _flags_filter=suncc_flags
4300     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4301         _type=pathscale
4302         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4303         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4304         _cflags_speed='-O2'
4305         _cflags_size='-Os'
4306         _flags_filter='filter_out -Wdisabled-optimization'
4307     elif $_cc -v 2>&1 | grep -q Open64; then
4308         _type=open64
4309         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4310         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4311         _cflags_speed='-O2'
4312         _cflags_size='-Os'
4313         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4314     elif $_cc -V 2>&1 | grep -q Portland; then
4315         _type=pgi
4316         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4317         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4318         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4319         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4320         _cflags_noopt="-O"
4321         _flags_filter=pgi_flags
4322     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4323         _type=armasm
4324         _ident=$($_cc | head -n1)
4325         # 4509: "This form of conditional instruction is deprecated"
4326         _flags="-nologo -ignore 4509"
4327         _flags_filter=armasm_flags
4328     elif $_cc 2>&1 | grep -q Intel; then
4329         _type=icl
4330         _ident=$($_cc 2>&1 | head -n1)
4331         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4332         # Not only is O3 broken on 13.x+ but it is slower on all previous
4333         # versions (tested) as well.
4334         _cflags_speed="-O2"
4335         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4336         if $_cc 2>&1 | grep -q Linker; then
4337             _ld_o='-out:$@'
4338         else
4339             _ld_o='-Fe$@'
4340         fi
4341         _cc_o='-Fo$@'
4342         _cc_e='-P'
4343         _flags_filter=icl_flags
4344         _ld_lib='lib%.a'
4345         _ld_path='-libpath:'
4346         # -Qdiag-error to make icl error when seeing certain unknown arguments
4347         _flags='-nologo -Qdiag-error:4044,10157'
4348         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4349         # with MSVC which enables it by default.
4350         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4351         disable stripping
4352     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4353         # lld can emulate multiple different linkers; in ms link.exe mode,
4354         # the -? parameter gives the help output which contains an identifyable
4355         # string, while it gives an error in other modes.
4356         _type=lld-link
4357         # The link.exe mode doesn't have a switch for getting the version,
4358         # but we can force it back to gnu mode and get the version from there.
4359         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4360         _ld_o='-out:$@'
4361         _flags_filter=msvc_flags
4362         _ld_lib='lib%.a'
4363         _ld_path='-libpath:'
4364     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4365         _type=msvc
4366         _ident=$($_cc 2>&1 | head -n1)
4367         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4368         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4369         _cflags_speed="-O2"
4370         _cflags_size="-O1"
4371         _cflags_noopt="-O1"
4372         if $_cc -nologo- 2>&1 | grep -q Linker; then
4373             _ld_o='-out:$@'
4374         else
4375             _ld_o='-Fe$@'
4376         fi
4377         _cc_o='-Fo$@'
4378         _cc_e='-P -Fi$@'
4379         _flags_filter=msvc_flags
4380         _ld_lib='lib%.a'
4381         _ld_path='-libpath:'
4382         _flags='-nologo'
4383         disable stripping
4384     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4385         _type=cparser
4386         _ident=$($_cc --version | head -n1)
4387         _depflags='-MMD'
4388         _cflags_speed='-O4'
4389         _cflags_size='-O2'
4390         _flags_filter=cparser_flags
4391     fi
4392
4393     eval ${pfx}_type=\$_type
4394     eval ${pfx}_ident=\$_ident
4395 }
4396
4397 set_ccvars(){
4398     eval ${1}_C=\${_cc_c-\${${1}_C}}
4399     eval ${1}_E=\${_cc_e-\${${1}_E}}
4400     eval ${1}_O=\${_cc_o-\${${1}_O}}
4401
4402     if [ -n "$_depflags" ]; then
4403         eval ${1}_DEPFLAGS=\$_depflags
4404     else
4405         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4406         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4407         eval DEP${1}FLAGS=\$_flags
4408     fi
4409 }
4410
4411 probe_cc cc "$cc" "true"
4412 cflags_filter=$_flags_filter
4413 cflags_speed=$_cflags_speed
4414 cflags_size=$_cflags_size
4415 cflags_noopt=$_cflags_noopt
4416 add_cflags $_flags $_cflags
4417 cc_ldflags=$_ldflags
4418 set_ccvars CC
4419 set_ccvars CXX
4420
4421 probe_cc hostcc "$host_cc"
4422 host_cflags_filter=$_flags_filter
4423 host_cflags_speed=$_cflags_speed
4424 add_host_cflags  $_flags $_cflags
4425 set_ccvars HOSTCC
4426
4427 test -n "$cc_type" && enable $cc_type ||
4428     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4429
4430 : ${as_default:=$cc}
4431 : ${objcc_default:=$cc}
4432 : ${dep_cc_default:=$cc}
4433 : ${ld_default:=$cc}
4434 : ${host_ld_default:=$host_cc}
4435 set_default ar as objcc dep_cc ld ln_s host_ld windres
4436
4437 probe_cc as "$as"
4438 asflags_filter=$_flags_filter
4439 add_asflags $_flags $_cflags
4440 set_ccvars AS
4441
4442 probe_cc objcc "$objcc"
4443 objcflags_filter=$_flags_filter
4444 add_objcflags $_flags $_cflags
4445 set_ccvars OBJC
4446
4447 probe_cc ld "$ld"
4448 ldflags_filter=$_flags_filter
4449 add_ldflags $_flags $_ldflags
4450 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4451 LD_O=${_ld_o-$LD_O}
4452 LD_LIB=${_ld_lib-$LD_LIB}
4453 LD_PATH=${_ld_path-$LD_PATH}
4454
4455 probe_cc hostld "$host_ld"
4456 host_ldflags_filter=$_flags_filter
4457 add_host_ldflags $_flags $_ldflags
4458 HOSTLD_O=${_ld_o-$HOSTLD_O}
4459
4460 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4461     probe_cc depcc "$dep_cc"
4462     CCDEP=${_DEPCMD:-$DEPCMD}
4463     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4464     DEPCCFLAGS=$_flags
4465 fi
4466
4467 if $ar 2>&1 | grep -q Microsoft; then
4468     arflags="-nologo"
4469     ar_o='-out:$@'
4470 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4471     arflags="rq"
4472     ar_o='$@'
4473 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4474     arflags='-Xany -r -c'
4475     ar_o='$@'
4476 elif $ar 2>&1 | grep -q "\[D\] "; then
4477     arflags="rcD"
4478     ar_o='$@'
4479 else
4480     arflags="rc"
4481     ar_o='$@'
4482 fi
4483
4484 add_cflags $extra_cflags
4485 add_cxxflags $extra_cxxflags
4486 add_objcflags $extra_objcflags
4487 add_asflags $extra_cflags
4488
4489 if test -n "$sysroot"; then
4490     case "$cc_type" in
4491         gcc|llvm_gcc|clang)
4492             add_cppflags --sysroot="$sysroot"
4493             add_ldflags --sysroot="$sysroot"
4494 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4495             add_cppflags -isysroot "$sysroot"
4496             add_ldflags -isysroot "$sysroot"
4497         ;;
4498         tms470)
4499             add_cppflags -I"$sysinclude"
4500             add_ldflags  --sysroot="$sysroot"
4501         ;;
4502     esac
4503 fi
4504
4505 if test "$cpu" = host; then
4506     enabled cross_compile &&
4507         die "--cpu=host makes no sense when cross-compiling."
4508
4509     case "$cc_type" in
4510         gcc|llvm_gcc)
4511             check_native(){
4512                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4513                 sed -n "/cc1.*$1=/{
4514                             s/.*$1=\\([^ ]*\\).*/\\1/
4515                             p
4516                             q
4517                         }" $TMPE
4518             }
4519             cpu=$(check_native -march || check_native -mcpu)
4520         ;;
4521         clang)
4522             check_native(){
4523                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4524                 sed -n "/cc1.*-target-cpu /{
4525                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4526                             p
4527                             q
4528                         }" $TMPE
4529             }
4530             cpu=$(check_native -march)
4531         ;;
4532     esac
4533
4534     test "${cpu:-host}" = host &&
4535         die "--cpu=host not supported with compiler $cc"
4536 fi
4537
4538 # Deal with common $arch aliases
4539 case "$arch" in
4540     aarch64|arm64)
4541         arch="aarch64"
4542     ;;
4543     arm*|iPad*|iPhone*)
4544         arch="arm"
4545     ;;
4546     mips*|IP*)
4547         case "$arch" in
4548         *el)
4549             add_cppflags -EL
4550             add_ldflags -EL
4551         ;;
4552         *eb)
4553             add_cppflags -EB
4554             add_ldflags -EB
4555         ;;
4556         esac
4557         arch="mips"
4558     ;;
4559     parisc*|hppa*)
4560         arch="parisc"
4561     ;;
4562     "Power Macintosh"|ppc*|powerpc*)
4563         arch="ppc"
4564     ;;
4565     s390|s390x)
4566         arch="s390"
4567     ;;
4568     sh4|sh)
4569         arch="sh4"
4570     ;;
4571     sun4*|sparc*)
4572         arch="sparc"
4573     ;;
4574     tilegx|tile-gx)
4575         arch="tilegx"
4576     ;;
4577     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4578         arch="x86"
4579     ;;
4580 esac
4581
4582 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4583 enable $arch
4584
4585 # Add processor-specific flags
4586 if enabled aarch64; then
4587
4588     case $cpu in
4589         armv*)
4590             cpuflags="-march=$cpu"
4591         ;;
4592         *)
4593             cpuflags="-mcpu=$cpu"
4594         ;;
4595     esac
4596
4597 elif enabled alpha; then
4598
4599     cpuflags="-mcpu=$cpu"
4600
4601 elif enabled arm; then
4602
4603     check_arm_arch() {
4604         check_cpp_condition stddef.h \
4605             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4606             $cpuflags
4607     }
4608
4609     probe_arm_arch() {
4610         if   check_arm_arch 4;        then echo armv4
4611         elif check_arm_arch 4T;       then echo armv4t
4612         elif check_arm_arch 5;        then echo armv5
4613         elif check_arm_arch 5E;       then echo armv5e
4614         elif check_arm_arch 5T;       then echo armv5t
4615         elif check_arm_arch 5TE;      then echo armv5te
4616         elif check_arm_arch 5TEJ;     then echo armv5te
4617         elif check_arm_arch 6;        then echo armv6
4618         elif check_arm_arch 6J;       then echo armv6j
4619         elif check_arm_arch 6K;       then echo armv6k
4620         elif check_arm_arch 6Z;       then echo armv6z
4621         elif check_arm_arch 6ZK;      then echo armv6zk
4622         elif check_arm_arch 6T2;      then echo armv6t2
4623         elif check_arm_arch 7;        then echo armv7
4624         elif check_arm_arch 7A  7_A;  then echo armv7-a
4625         elif check_arm_arch 7S;       then echo armv7-a
4626         elif check_arm_arch 7R  7_R;  then echo armv7-r
4627         elif check_arm_arch 7M  7_M;  then echo armv7-m
4628         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4629         elif check_arm_arch 8A  8_A;  then echo armv8-a
4630         fi
4631     }
4632
4633     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4634
4635     case $cpu in
4636         armv*)
4637             cpuflags="-march=$cpu"
4638             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4639         ;;
4640         *)
4641             cpuflags="-mcpu=$cpu"
4642             case $cpu in
4643                 cortex-a*)                               subarch=armv7a  ;;
4644                 cortex-r*)                               subarch=armv7r  ;;
4645                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4646                 arm11*)                                  subarch=armv6   ;;
4647                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4648                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4649                 *)                             subarch=$(probe_arm_arch) ;;
4650             esac
4651         ;;
4652     esac
4653
4654     case "$subarch" in
4655         armv5t*)    enable fast_clz                ;;
4656         armv[6-8]*)
4657             enable fast_clz
4658             disabled fast_unaligned || enable fast_unaligned
4659             ;;
4660     esac
4661
4662 elif enabled avr32; then
4663
4664     case $cpu in
4665         ap7[02]0[0-2])
4666             subarch="avr32_ap"
4667             cpuflags="-mpart=$cpu"
4668         ;;
4669         ap)
4670             subarch="avr32_ap"
4671             cpuflags="-march=$cpu"
4672         ;;
4673         uc3[ab]*)
4674             subarch="avr32_uc"
4675             cpuflags="-mcpu=$cpu"
4676         ;;
4677         uc)
4678             subarch="avr32_uc"
4679             cpuflags="-march=$cpu"
4680         ;;
4681     esac
4682
4683 elif enabled bfin; then
4684
4685     cpuflags="-mcpu=$cpu"
4686
4687 elif enabled mips; then
4688
4689     cpuflags="-march=$cpu"
4690
4691     if [ "$cpu" != "generic" ]; then
4692         disable mips32r2
4693         disable mips32r5
4694         disable mips64r2
4695         disable mips32r6
4696         disable mips64r6
4697         disable loongson2
4698         disable loongson3
4699
4700         case $cpu in
4701             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4702                 enable mips32r2
4703                 disable msa
4704             ;;
4705             p5600|i6400|p6600)
4706                 disable mipsdsp
4707                 disable mipsdspr2
4708             ;;
4709             loongson*)
4710                 enable loongson2
4711                 enable loongson3
4712                 enable local_aligned_8 local_aligned_16 local_aligned_32
4713                 enable simd_align_16
4714                 enable fast_64bit
4715                 enable fast_clz
4716                 enable fast_cmov
4717                 enable fast_unaligned
4718                 disable aligned_stack
4719                 disable mipsfpu
4720                 disable mipsdsp
4721                 disable mipsdspr2
4722                 case $cpu in
4723                     loongson3*)
4724                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4725                     ;;
4726                     loongson2e)
4727                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4728                     ;;
4729                     loongson2f)
4730                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4731                     ;;
4732                 esac
4733             ;;
4734             *)
4735                 # Unknown CPU. Disable everything.
4736                 warn "unknown CPU. Disabling all MIPS optimizations."
4737                 disable mipsfpu
4738                 disable mipsdsp
4739                 disable mipsdspr2
4740                 disable msa
4741                 disable mmi
4742             ;;
4743         esac
4744
4745         case $cpu in
4746             24kc)
4747                 disable mipsfpu
4748                 disable mipsdsp
4749                 disable mipsdspr2
4750             ;;
4751             24kf*)
4752                 disable mipsdsp
4753                 disable mipsdspr2
4754             ;;
4755             24kec|34kc|1004kc)
4756                 disable mipsfpu
4757                 disable mipsdspr2
4758             ;;
4759             24kef*|34kf*|1004kf*)
4760                 disable mipsdspr2
4761             ;;
4762             74kc)
4763                 disable mipsfpu
4764             ;;
4765             p5600)
4766                 enable mips32r5
4767                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4768             ;;
4769             i6400)
4770                 enable mips64r6
4771                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4772             ;;
4773             p6600)
4774                 enable mips64r6
4775                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4776             ;;
4777         esac
4778     else
4779         # We do not disable anything. Is up to the user to disable the unwanted features.
4780         warn 'generic cpu selected'
4781     fi
4782
4783 elif enabled ppc; then
4784
4785     disable ldbrx
4786
4787     case $(tolower $cpu) in
4788         601|ppc601|powerpc601)
4789             cpuflags="-mcpu=601"
4790             disable altivec
4791         ;;
4792         603*|ppc603*|powerpc603*)
4793             cpuflags="-mcpu=603"
4794             disable altivec
4795         ;;
4796         604*|ppc604*|powerpc604*)
4797             cpuflags="-mcpu=604"
4798             disable altivec
4799         ;;
4800         g3|75*|ppc75*|powerpc75*)
4801             cpuflags="-mcpu=750"
4802             disable altivec
4803         ;;
4804         g4|745*|ppc745*|powerpc745*)
4805             cpuflags="-mcpu=7450"
4806             disable vsx
4807         ;;
4808         74*|ppc74*|powerpc74*)
4809             cpuflags="-mcpu=7400"
4810             disable vsx
4811         ;;
4812         g5|970|ppc970|powerpc970)
4813             cpuflags="-mcpu=970"
4814             disable vsx
4815         ;;
4816         power[3-6]*)
4817             cpuflags="-mcpu=$cpu"
4818             disable vsx
4819         ;;
4820         power[7-8]*)
4821             cpuflags="-mcpu=$cpu"
4822         ;;
4823         cell)
4824             cpuflags="-mcpu=cell"
4825             enable ldbrx
4826             disable vsx
4827         ;;
4828         e500mc)
4829             cpuflags="-mcpu=e500mc"
4830             disable altivec
4831         ;;
4832         e500v2)
4833             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4834             disable altivec
4835             disable dcbzl
4836         ;;
4837         e500)
4838             cpuflags="-mcpu=8540 -mhard-float"
4839             disable altivec
4840             disable dcbzl
4841         ;;
4842     esac
4843
4844 elif enabled sparc; then
4845
4846     case $cpu in
4847         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4848             cpuflags="-mcpu=$cpu"
4849         ;;
4850         ultrasparc*|niagara[234])
4851             cpuflags="-mcpu=$cpu"
4852         ;;
4853     esac
4854
4855 elif enabled x86; then
4856
4857     case $cpu in
4858         i[345]86|pentium)
4859             cpuflags="-march=$cpu"
4860             disable i686
4861             disable mmx
4862         ;;
4863         # targets that do NOT support nopl and conditional mov (cmov)
4864         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4865             cpuflags="-march=$cpu"
4866             disable i686
4867         ;;
4868         # targets that do support nopl and conditional mov (cmov)
4869         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4870         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4871         |amdfam10|barcelona|b[dt]ver*|znver*)
4872             cpuflags="-march=$cpu"
4873             enable i686
4874             enable fast_cmov
4875         ;;
4876         # targets that do support conditional mov but on which it's slow
4877         pentium4|pentium4m|prescott|nocona)
4878             cpuflags="-march=$cpu"
4879             enable i686
4880             disable fast_cmov
4881         ;;
4882     esac
4883
4884 fi
4885
4886 if [ "$cpu" != generic ]; then
4887     add_cflags  $cpuflags
4888     add_asflags $cpuflags
4889     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4890 fi
4891
4892 # compiler sanity check
4893 check_exec <<EOF
4894 int main(void){ return 0; }
4895 EOF
4896 if test "$?" != 0; then
4897     echo "$cc is unable to create an executable file."
4898     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4899         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4900         echo "Only do this if you know what cross compiling means."
4901     fi
4902     die "C compiler test failed."
4903 fi
4904
4905 add_cppflags -D_ISOC99_SOURCE
4906 add_cxxflags -D__STDC_CONSTANT_MACROS
4907 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4908
4909 # some compilers silently accept -std=c11, so we also need to check that the
4910 # version macro is defined properly
4911 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4912     add_cflags -std=c11 ||
4913     check_cflags -std=c99
4914
4915 check_cppflags -D_FILE_OFFSET_BITS=64
4916 check_cppflags -D_LARGEFILE_SOURCE
4917
4918 add_host_cppflags -D_ISOC99_SOURCE
4919 check_host_cflags -std=c99
4920 check_host_cflags -Wall
4921 check_host_cflags $host_cflags_speed
4922
4923 check_64bit(){
4924     arch32=$1
4925     arch64=$2
4926     expr=$3
4927     check_code cc "" "int test[2*($expr) - 1]" &&
4928         subarch=$arch64 || subarch=$arch32
4929 }
4930
4931 case "$arch" in
4932     aarch64|alpha|ia64)
4933         spic=$shared
4934     ;;
4935     mips)
4936         check_64bit mips mips64 '_MIPS_SIM > 1'
4937         spic=$shared
4938     ;;
4939     parisc)
4940         check_64bit parisc parisc64 'sizeof(void *) > 4'
4941         spic=$shared
4942     ;;
4943     ppc)
4944         check_64bit ppc ppc64 'sizeof(void *) > 4'
4945         spic=$shared
4946     ;;
4947     s390)
4948         check_64bit s390 s390x 'sizeof(void *) > 4'
4949         spic=$shared
4950     ;;
4951     sparc)
4952         check_64bit sparc sparc64 'sizeof(void *) > 4'
4953         spic=$shared
4954     ;;
4955     x86)
4956         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4957         # Treat x32 as x64 for now. Note it also needs spic=$shared
4958         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4959             subarch=x86_64
4960         if test "$subarch" = "x86_64"; then
4961             spic=$shared
4962         fi
4963     ;;
4964     ppc)
4965         check_cc <<EOF && subarch="ppc64"
4966         int test[(int)sizeof(char*) - 7];
4967 EOF
4968     ;;
4969 esac
4970
4971 enable $subarch
4972 enabled spic && enable_weak pic
4973
4974 enabled x86_64 && objformat=elf64 || objformat="elf32"
4975
4976 # OS specific
4977 case $target_os in
4978     aix)
4979         SHFLAGS=-shared
4980         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4981         enabled shared && add_ldflags -Wl,-brtl
4982         ;;
4983     android)
4984         disable symver
4985         enable section_data_rel_ro
4986         SLIB_INSTALL_NAME='$(SLIBNAME)'
4987         SLIB_INSTALL_LINKS=
4988         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4989         ;;
4990     haiku)
4991         prefix_default="/boot/common"
4992         network_extralibs="-lnetwork"
4993         host_extralibs=
4994         ;;
4995     sunos)
4996         SHFLAGS='-shared -Wl,-h,$$(@F)'
4997         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4998         network_extralibs="-lsocket -lnsl"
4999         add_cppflags -D__EXTENSIONS__
5000         # When using suncc to build, the Solaris linker will mark
5001         # an executable with each instruction set encountered by
5002         # the Solaris assembler.  As our libraries contain their own
5003         # guards for processor-specific code, instead suppress
5004         # generation of the HWCAPS ELF section on Solaris x86 only.
5005         enabled_all suncc x86 &&
5006             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5007             add_ldflags -Wl,-M,mapfile
5008         nm_default='nm -P -g'
5009         version_script='-M'
5010         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5011         ;;
5012     netbsd)
5013         disable symver
5014         oss_indev_extralibs="-lossaudio"
5015         oss_outdev_extralibs="-lossaudio"
5016         enabled gcc || check_ldflags -Wl,-zmuldefs
5017         ;;
5018     openbsd|bitrig)
5019         disable symver
5020         SHFLAGS='-shared'
5021         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5022         SLIB_INSTALL_LINKS=
5023         oss_indev_extralibs="-lossaudio"
5024         oss_outdev_extralibs="-lossaudio"
5025         ;;
5026     dragonfly)
5027         disable symver
5028         ;;
5029     freebsd)
5030         ;;
5031     bsd/os)
5032         add_extralibs -lpoll -lgnugetopt
5033         strip="strip -d"
5034         ;;
5035     darwin)
5036         enabled ppc && add_asflags -force_cpusubtype_ALL
5037         install_name_dir_default='$(SHLIBDIR)'
5038         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5039         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5040         strip="${strip} -x"
5041         add_ldflags -Wl,-dynamic,-search_paths_first
5042         check_cflags -Werror=partial-availability
5043         SLIBSUF=".dylib"
5044         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5045         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5046         enabled x86_64 && objformat="macho64" || objformat="macho32"
5047         enabled_any pic shared x86_64 ||
5048             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5049         check_header dispatch/dispatch.h &&
5050             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5051         version_script='-exported_symbols_list'
5052         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5053         ;;
5054     msys*)
5055         die "Native MSYS builds are discouraged, please use the MINGW environment."
5056         ;;
5057     mingw32*|mingw64*)
5058         if test $target_os = "mingw32ce"; then
5059             disable network
5060         else
5061             target_os=mingw32
5062         fi
5063         LIBTARGET=i386
5064         if enabled x86_64; then
5065             LIBTARGET="i386:x86-64"
5066         elif enabled arm; then
5067             LIBTARGET=arm-wince
5068         fi
5069         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5070         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5071         shlibdir_default="$bindir_default"
5072         SLIBPREF=""
5073         SLIBSUF=".dll"
5074         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5075         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5076         dlltool="${cross_prefix}dlltool"
5077         if check_cmd lib.exe -list; then
5078             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5079             if enabled x86_64; then
5080                 LIBTARGET=x64
5081             fi
5082         elif check_cmd $dlltool --version; then
5083             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5084         fi
5085         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5086         SLIB_INSTALL_LINKS=
5087         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5088         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5089         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
5090         enabled x86_64 && objformat="win64" || objformat="win32"
5091         ranlib=:
5092         enable dos_paths
5093         check_ldflags -Wl,--nxcompat,--dynamicbase
5094         # Lets work around some stupidity in binutils.
5095         # ld will strip relocations from executables even though we need them
5096         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5097         # however ld then forgets what the entry point should be (oops) so we
5098         # have to manually (re)set it.
5099         if enabled x86_32; then
5100             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5101         elif enabled x86_64; then
5102             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5103             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5104             # Set image base >4GB for extra entropy with HEASLR
5105             add_ldexeflags -Wl,--image-base,0x140000000
5106             append SHFLAGS -Wl,--image-base,0x180000000
5107         fi
5108         ;;
5109     win32|win64)
5110         disable symver
5111         if enabled shared; then
5112             # Link to the import library instead of the normal static library
5113             # for shared libs.
5114             LD_LIB='%.lib'
5115             # Cannot build both shared and static libs with MSVC or icl.
5116             disable static
5117         fi
5118         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5119         shlibdir_default="$bindir_default"
5120         SLIBPREF=""
5121         SLIBSUF=".dll"
5122         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5123         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5124         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5125         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5126         SLIB_INSTALL_LINKS=
5127         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5128         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5129         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5130         enabled x86_64 && objformat="win64" || objformat="win32"
5131         ranlib=:
5132         enable dos_paths
5133         ;;
5134     cygwin*)
5135         target_os=cygwin
5136         shlibdir_default="$bindir_default"
5137         SLIBPREF="cyg"
5138         SLIBSUF=".dll"
5139         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5140         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5141         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5142         SLIB_INSTALL_LINKS=
5143         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5144         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5145         enabled x86_64 && objformat="win64" || objformat="win32"
5146         enable dos_paths
5147         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5148         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5149         ;;
5150     *-dos|freedos|opendos)
5151         network_extralibs="-lsocket"
5152         objformat="coff"
5153         enable dos_paths
5154         add_cppflags -U__STRICT_ANSI__
5155         ;;
5156     linux)
5157         enable section_data_rel_ro
5158         enabled_any arm aarch64 && enable_weak linux_perf
5159         ;;
5160     irix*)
5161         target_os=irix
5162         ranlib="echo ignoring ranlib"
5163         ;;
5164     os/2*)
5165         strip="lxlite -CS"
5166         striptype=""
5167         objformat="aout"
5168         add_cppflags -D_GNU_SOURCE
5169         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5170         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5171         LIBSUF="_s.a"
5172         SLIBPREF=""
5173         SLIBSUF=".dll"
5174         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5175         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5176         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5177             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5178             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5179             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5180             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5181         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5182             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5183         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5184         SLIB_INSTALL_LINKS=
5185         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5186         enable dos_paths
5187         enable_weak os2threads
5188         ;;
5189     gnu/kfreebsd)
5190         add_cppflags -D_BSD_SOURCE
5191         ;;
5192     gnu)
5193         ;;
5194     qnx)
5195         add_cppflags -D_QNX_SOURCE
5196         network_extralibs="-lsocket"
5197         ;;
5198     symbian)
5199         SLIBSUF=".dll"
5200         enable dos_paths
5201         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5202         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5203         add_ldflags -Wl,--target1-abs,--no-undefined \
5204                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5205                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5206         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5207                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5208                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5209         ;;
5210     osf1)
5211         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5212         ;;
5213     minix)
5214         ;;
5215     none)
5216         ;;
5217     *)
5218         die "Unknown OS '$target_os'."
5219         ;;
5220 esac
5221
5222 # test if creating links works
5223 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5224 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5225 mkdir "$link_dest"
5226 $ln_s "$link_dest" "$link_name"
5227 touch "$link_dest/test_file"
5228 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5229     # create link to source path
5230     [ -e src ] && rm src
5231     $ln_s "$source_path" src
5232     source_link=src
5233 else
5234     # creating directory links doesn't work
5235     # fall back to using the full source path
5236     source_link="$source_path"
5237 fi
5238 # cleanup
5239 rm -r "$link_dest"
5240 rm -r "$link_name"
5241
5242 # determine libc flavour
5243
5244 probe_libc(){
5245     pfx=$1
5246     pfx_no_=${pfx%_}
5247     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5248     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5249         eval ${pfx}libc_type=uclibc
5250         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5251     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5252         eval ${pfx}libc_type=glibc
5253         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5254     # MinGW headers can be installed on Cygwin, so check for newlib first.
5255     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5256         eval ${pfx}libc_type=newlib
5257         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5258     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5259     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5260         eval ${pfx}libc_type=mingw64
5261         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5262             add_compat msvcrt/snprintf.o
5263             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5264         fi
5265         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5266         eval test \$${pfx_no_}cc_type = "gcc" &&
5267             add_${pfx}cppflags -D__printf__=__gnu_printf__
5268     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5269          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5270         eval ${pfx}libc_type=mingw32
5271         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5272             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5273             die "ERROR: MinGW32 runtime version must be >= 3.15."
5274         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5275         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5276             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5277         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5278             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5279         eval test \$${pfx_no_}cc_type = "gcc" &&
5280             add_${pfx}cppflags -D__printf__=__gnu_printf__
5281     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5282         eval ${pfx}libc_type=msvcrt
5283         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5284             if [ "$pfx" = host_ ]; then
5285                 add_host_cppflags -Dsnprintf=_snprintf
5286             else
5287                 add_compat strtod.o strtod=avpriv_strtod
5288                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5289                                              _snprintf=avpriv_snprintf  \
5290                                              vsnprintf=avpriv_vsnprintf
5291             fi
5292         fi
5293         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5294         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5295         # 0x601 by default unless something else is set by the user.
5296         # This can easily lead to us detecting functions only present
5297         # in such new versions and producing binaries requiring windows 7.0.
5298         # Therefore explicitly set the default to XP unless the user has
5299         # set something else on the command line.
5300         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5301         # family. For these cases, configure is free to use any functions
5302         # found in the SDK headers by default. (Alternatively, we could force
5303         # _WIN32_WINNT to 0x0602 in that case.)
5304         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5305             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5306 #ifdef WINAPI_FAMILY
5307 #include <winapifamily.h>
5308 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5309 #error not desktop
5310 #endif
5311 #endif
5312 EOF
5313         if [ "$pfx" = "" ]; then
5314             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5315             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5316         fi
5317     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5318         eval ${pfx}libc_type=klibc
5319     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5320         eval ${pfx}libc_type=bionic
5321     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5322         eval ${pfx}libc_type=solaris
5323         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5324     fi
5325     check_${pfx}cc <<EOF
5326 #include <time.h>
5327 void *v = localtime_r;
5328 EOF
5329 test "$?" != 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
5330 #include <time.h>
5331 void *v = localtime_r;
5332 EOF
5333
5334 }
5335
5336 probe_libc
5337 test -n "$libc_type" && enable libc_$libc_type
5338 probe_libc host_
5339 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5340
5341 # hacks for compiler/libc/os combinations
5342
5343 case $libc_type in
5344     bionic)
5345         add_compat strtod.o strtod=avpriv_strtod
5346         ;;
5347     glibc)
5348         if enabled tms470; then
5349             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5350             add_cppflags -D__USER_LABEL_PREFIX__=
5351             add_cppflags -D__builtin_memset=memset
5352             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5353             add_cflags   -pds=48    # incompatible redefinition of macro
5354         elif enabled ccc; then
5355             add_ldflags -Wl,-z,now  # calls to libots crash without this
5356         fi
5357         ;;
5358 esac
5359
5360 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5361     add_cppflags '-I\$(SRC_PATH)/compat/float'
5362
5363 esc(){
5364     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5365 }
5366
5367 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5368
5369 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5370
5371 set_default libdir
5372 : ${shlibdir_default:="$libdir"}
5373 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5374
5375 set_default $PATHS_LIST
5376 set_default nm
5377
5378 # we need to build at least one lib type
5379 if ! enabled_any static shared; then
5380     cat <<EOF
5381 At least one library type must be built.
5382 Specify --enable-static to build the static libraries or --enable-shared to
5383 build the shared libraries as well. To only build the shared libraries specify
5384 --disable-static in addition to --enable-shared.
5385 EOF
5386     exit 1
5387 fi
5388
5389 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5390
5391 enable_weak_pic() {
5392     disabled pic && return
5393     enable pic
5394     add_cppflags -DPIC
5395     case "$target_os" in
5396     mingw*|cygwin*)
5397         ;;
5398     *)
5399         add_cflags -fPIC
5400         ;;
5401     esac
5402     add_asflags  -fPIC
5403 }
5404
5405 enabled pic && enable_weak_pic
5406
5407 check_cc <<EOF || die "Symbol mangling check failed."
5408 int ff_extern;
5409 EOF
5410 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5411 extern_prefix=${sym%%ff_extern*}
5412
5413 check_inline_asm inline_asm '"" ::'
5414
5415 _restrict=
5416 for restrict_keyword in restrict __restrict__ __restrict; do
5417     check_cc <<EOF && _restrict=$restrict_keyword && break
5418 void foo(char * $restrict_keyword p);
5419 EOF
5420 done
5421
5422 check_cc <<EOF && enable pragma_deprecated
5423 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5424 EOF
5425
5426 check_cc <<EOF && enable attribute_packed
5427 struct { int x; } __attribute__((packed)) x;
5428 EOF
5429
5430 check_cc <<EOF && enable attribute_may_alias
5431 union { int x; } __attribute__((may_alias)) x;
5432 EOF
5433
5434 check_cc <<EOF || die "endian test failed"
5435 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5436 EOF
5437 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5438
5439 check_cc <<EOF && enable const_nan
5440 #include <math.h>
5441 void foo(void) { struct { double d; } static const bar[] = { { NAN } }; }
5442 EOF
5443
5444 if ! enabled ppc64 || enabled bigendian; then
5445     disable vsx
5446 fi
5447
5448 check_gas() {
5449     log "check_gas using '$as' as AS"
5450     # :vararg is used on aarch64, arm and ppc altivec
5451     check_as <<EOF || return 1
5452 .macro m n, y:vararg=0
5453 \n: .int \y
5454 .endm
5455 m x
5456 EOF
5457     # .altmacro is only used in arm asm
5458     ! enabled arm || check_as <<EOF || return 1
5459 .altmacro
5460 EOF
5461     enable gnu_as
5462     return 0
5463 }
5464
5465 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5466     nogas=:
5467     enabled_any arm aarch64 && nogas=die
5468     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5469     as_noop=-v
5470
5471     case $as_type in
5472         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5473         gcc)  gaspp_as_type=gas ;;
5474         *)    gaspp_as_type=$as_type ;;
5475     esac
5476
5477     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5478
5479     test "${as#*gas-preprocessor.pl}" != "$as" ||
5480     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5481         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5482
5483     if ! check_gas ; then
5484         as=${gas:=$as}
5485         check_gas || \
5486             $nogas "GNU assembler not found, install/update gas-preprocessor"
5487     fi
5488
5489     check_as <<EOF && enable as_func
5490 .func test
5491 .endfunc
5492 EOF
5493 fi
5494
5495 check_inline_asm inline_asm_labels '"1:\n"'
5496
5497 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5498
5499 if enabled aarch64; then
5500     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5501     # internal assembler in clang 3.3 does not support this instruction
5502     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5503     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5504
5505     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5506
5507 elif enabled alpha; then
5508
5509     check_cflags -mieee
5510
5511 elif enabled arm; then
5512
5513     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5514
5515     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5516 float func(float a, float b){ return a+b; }
5517 EOF
5518
5519     enabled thumb && check_cflags -mthumb || check_cflags -marm
5520
5521     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5522         enable vfp_args
5523     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5524         enable vfp_args
5525     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5526         case "${cross_prefix:-$cc}" in
5527             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5528             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5529 __asm__ (".eabi_attribute 28, 1");
5530 int main(void) { return 0; }
5531 EOF
5532         esac
5533         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5534     fi
5535
5536     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5537     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5538     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5539     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5540     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5541     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5542     enabled setend  && check_insn setend  'setend be'
5543
5544     [ $target_os = linux ] || [ $target_os = android ] ||
5545         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5546             $ARCH_EXT_LIST_ARM
5547
5548     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5549
5550     check_as <<EOF && enable as_dn_directive
5551 ra .dn d0.i16
5552 .unreq ra
5553 EOF
5554     check_as <<EOF && enable as_fpu_directive
5555 .fpu neon
5556 EOF
5557
5558     # llvm's integrated assembler supports .object_arch from llvm 3.5
5559     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5560         check_as <<EOF && enable as_object_arch
5561 .object_arch armv4
5562 EOF
5563
5564     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5565
5566 elif enabled mips; then
5567
5568     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5569     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5570     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5571
5572     # Enable minimum ISA based on selected options
5573     if enabled mips64; then
5574         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5575         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5576         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5577     else
5578         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5579         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5580         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5581         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5582     fi
5583
5584     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5585     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5586     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5587     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5588     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5589
5590     if enabled bigendian && enabled msa; then
5591         disable msa
5592     fi
5593
5594 elif enabled parisc; then
5595
5596     if enabled gcc; then
5597         case $($cc -dumpversion) in
5598             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5599         esac
5600     fi
5601
5602 elif enabled ppc; then
5603
5604     enable local_aligned_8 local_aligned_16 local_aligned_32
5605
5606     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5607     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5608     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5609     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5610
5611     # AltiVec flags: The FSF version of GCC differs from the Apple version
5612     if enabled altivec; then
5613         check_cflags -maltivec -mabi=altivec &&
5614         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5615         check_cflags -faltivec
5616
5617         # check if our compiler supports Motorola AltiVec C API
5618         check_cc <<EOF || disable altivec
5619 $inc_altivec_h
5620 int main(void) {
5621     vector signed int v1 = (vector signed int) { 0 };
5622     vector signed int v2 = (vector signed int) { 1 };
5623     v1 = vec_add(v1, v2);
5624     return 0;
5625 }
5626 EOF
5627
5628         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5629     fi
5630
5631     if enabled vsx; then
5632         check_cflags -mvsx &&
5633         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5634     fi
5635
5636     if enabled power8; then
5637         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5638     fi
5639
5640 elif enabled x86; then
5641
5642     check_builtin rdtsc    intrin.h   "__rdtsc()"
5643     check_builtin mm_empty mmintrin.h "_mm_empty()"
5644
5645     enable local_aligned_8 local_aligned_16 local_aligned_32
5646
5647     # check whether EBP is available on x86
5648     # As 'i' is stored on the stack, this program will crash
5649     # if the base pointer is used to access it because the
5650     # base pointer is cleared in the inline assembly code.
5651     check_exec_crash <<EOF && enable ebp_available
5652 volatile int i=0;
5653 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5654 return i;
5655 EOF
5656
5657     # check whether EBX is available on x86
5658     check_inline_asm ebx_available '""::"b"(0)' &&
5659         check_inline_asm ebx_available '"":::"%ebx"'
5660
5661     # check whether xmm clobbers are supported
5662     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5663
5664     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5665         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5666
5667     # check whether binutils is new enough to compile SSSE3/MMXEXT
5668     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5669     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5670
5671     probe_x86asm(){
5672         x86asmexe_probe=$1
5673         if check_cmd $x86asmexe_probe -v; then
5674             x86asmexe=$x86asmexe_probe
5675             x86asm_type=nasm
5676             x86asm_debug="-g -F dwarf"
5677         elif check_cmd $x86asmexe_probe --version; then
5678             x86asmexe=$x86asmexe_probe
5679             x86asm_type=yasm
5680             x86asm_debug="-g dwarf2"
5681         fi
5682         check_x86asm "movbe ecx, [5]" && enable x86asm
5683     }
5684
5685     if ! disabled_any asm mmx x86asm; then
5686         disable x86asm
5687         for program in $x86asmexe nasm yasm; do
5688             probe_x86asm $program && break
5689         done
5690         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5691         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5692         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5693         X86ASMFLAGS="-f $objformat"
5694         enabled pic               && append X86ASMFLAGS "-DPIC"
5695         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5696         case "$objformat" in
5697             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5698         esac
5699
5700         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5701         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5702         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5703         check_x86asm "CPU amdnop" || disable cpunop
5704     fi
5705
5706     case "$cpu" in
5707         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5708             disable fast_clz
5709         ;;
5710     esac
5711
5712 fi
5713
5714 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5715
5716 check_ldflags -Wl,--as-needed
5717 check_ldflags -Wl,-z,noexecstack
5718
5719 if ! disabled network; then
5720     check_func getaddrinfo $network_extralibs
5721     check_func inet_aton $network_extralibs
5722
5723     check_type netdb.h "struct addrinfo"
5724     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5725     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5726     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5727     check_type poll.h "struct pollfd"
5728     check_type netinet/sctp.h "struct sctp_event_subscribe"
5729     check_struct "sys/socket.h" "struct msghdr" msg_flags
5730     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5731     check_type netinet/in.h "struct sockaddr_in6"
5732     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5733     check_type "sys/types.h sys/socket.h" socklen_t
5734
5735     # Prefer arpa/inet.h over winsock2
5736     if check_header arpa/inet.h ; then
5737         check_func closesocket
5738     elif check_header winsock2.h ; then
5739         check_func_headers winsock2.h closesocket -lws2 &&
5740             network_extralibs="-lws2" ||
5741         { check_func_headers winsock2.h closesocket -lws2_32 &&
5742             network_extralibs="-lws2_32"; } || disable winsock2_h network
5743         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5744
5745         check_type ws2tcpip.h socklen_t
5746         check_type ws2tcpip.h "struct addrinfo"
5747         check_type ws2tcpip.h "struct group_source_req"
5748         check_type ws2tcpip.h "struct ip_mreq_source"
5749         check_type ws2tcpip.h "struct ipv6_mreq"
5750         check_type winsock2.h "struct pollfd"
5751         check_struct winsock2.h "struct sockaddr" sa_len
5752         check_type ws2tcpip.h "struct sockaddr_in6"
5753         check_type ws2tcpip.h "struct sockaddr_storage"
5754     else
5755         disable network
5756     fi
5757 fi
5758
5759 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5760 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5761 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5762 check_builtin sarestart signal.h "SA_RESTART"
5763 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5764 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5765 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5766 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5767
5768 case "$custom_allocator" in
5769     jemalloc)
5770         # jemalloc by default does not use a prefix
5771         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5772     ;;
5773     tcmalloc)
5774         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
5775         malloc_prefix=tc_
5776     ;;
5777 esac
5778
5779 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5780 check_func  ${malloc_prefix}memalign            && enable memalign
5781 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5782
5783 check_func  access
5784 check_func_headers stdlib.h arc4random
5785 check_lib   clock_gettime time.h clock_gettime || check_lib clock_gettime time.h clock_gettime -lrt
5786 check_func  fcntl
5787 check_func  fork
5788 check_func  gethrtime
5789 check_func  getopt
5790 check_func  getrusage
5791 check_func  gettimeofday
5792 check_func  isatty
5793 check_func  mach_absolute_time
5794 check_func  mkstemp
5795 check_func  mmap
5796 check_func  mprotect
5797 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5798 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
5799 check_func  sched_getaffinity
5800 check_func  setrlimit
5801 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5802 check_func  strerror_r
5803 check_func  sysconf
5804 check_func  sysctl
5805 check_func  usleep
5806
5807 check_func_headers conio.h kbhit
5808 check_func_headers io.h setmode
5809 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5810 check_func_headers stdlib.h getenv
5811 check_func_headers sys/stat.h lstat
5812
5813 check_func_headers windows.h GetProcessAffinityMask
5814 check_func_headers windows.h GetProcessTimes
5815 check_func_headers windows.h GetSystemTimeAsFileTime
5816 check_func_headers windows.h LoadLibrary
5817 check_func_headers windows.h MapViewOfFile
5818 check_func_headers windows.h PeekNamedPipe
5819 check_func_headers windows.h SetConsoleTextAttribute
5820 check_func_headers windows.h SetConsoleCtrlHandler
5821 check_func_headers windows.h Sleep
5822 check_func_headers windows.h VirtualAlloc
5823 check_struct windows.h "CONDITION_VARIABLE" Ptr
5824 check_func_headers glob.h glob
5825 enabled xlib &&
5826     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5827
5828 check_header d3d11.h
5829 check_header direct.h
5830 check_header dirent.h
5831 check_header dlfcn.h
5832 check_header dxgidebug.h
5833 check_header dxva.h
5834 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5835 check_header io.h
5836 check_header libcrystalhd/libcrystalhd_if.h
5837 check_header mach/mach_time.h
5838 check_header malloc.h
5839 check_header net/udplite.h
5840 check_header poll.h
5841 check_header sys/mman.h
5842 check_header sys/param.h
5843 check_header sys/resource.h
5844 check_header sys/select.h
5845 check_header sys/time.h
5846 check_header sys/un.h
5847 check_header termios.h
5848 check_header unistd.h
5849 check_header valgrind/valgrind.h
5850 check_header VideoDecodeAcceleration/VDADecoder.h
5851 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5852 check_header windows.h
5853 check_header X11/extensions/XvMClib.h
5854 check_header asm/types.h
5855
5856 # it seems there are versions of clang in some distros that try to use the
5857 # gcc headers, which explodes for stdatomic
5858 # so we also check that atomics actually work here
5859 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5860
5861 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5862 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5863 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5864 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5865
5866 enabled appkit       && check_apple_framework AppKit
5867 enabled audiotoolbox && check_apple_framework AudioToolbox
5868 enabled avfoundation && check_apple_framework AVFoundation
5869 enabled coreimage    && check_apple_framework CoreImage
5870 enabled videotoolbox && check_apple_framework VideoToolbox
5871
5872 check_apple_framework CoreFoundation
5873 check_apple_framework CoreMedia
5874 check_apple_framework CoreVideo
5875
5876 enabled avfoundation && {
5877     disable coregraphics applicationservices
5878     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||
5879     check_lib applicationservices ApplicationServices/ApplicationServices.h CGGetActiveDisplayList "-framework ApplicationServices"; }
5880
5881 enabled videotoolbox && {
5882     check_lib coreservices CoreServices/CoreServices.h UTGetOSTypeFromString "-framework CoreServices"
5883     check_func_headers CoreMedia/CMFormatDescription.h kCMVideoCodecType_HEVC "-framework CoreMedia"
5884 }
5885
5886 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5887
5888 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5889 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5890 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5891 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5892 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5893
5894 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5895 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5896 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5897 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5898 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5899 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5900 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5901 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5902 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5903
5904 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5905
5906 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5907
5908 if ! disabled w32threads && ! enabled pthreads; then
5909     check_func_headers "windows.h process.h" _beginthreadex &&
5910         enable w32threads || disable w32threads
5911     if ! enabled w32threads && enabled winrt; then
5912         check_func_headers "windows.h" CreateThread &&
5913             enable w32threads || disable w32threads
5914     fi
5915 fi
5916
5917 # check for some common methods of building with pthread support
5918 # do this before the optional library checks as some of them require pthreads
5919 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5920     if check_lib pthreads pthread.h pthread_join   -pthread &&
5921        check_lib pthreads pthread.h pthread_create -pthread; then
5922         add_cflags -pthread
5923     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5924          check_lib pthreads pthread.h pthread_create -pthreads; then
5925         add_cflags -pthreads
5926     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5927          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5928         add_cflags -ldl -pthread
5929     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5930          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5931         :
5932     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5933          check_lib pthreads pthread.h pthread_create -lpthread; then
5934         :
5935     elif check_func pthread_join && check_func pthread_create; then
5936         enable pthreads
5937     fi
5938     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5939 fi
5940
5941
5942 if enabled pthreads; then
5943   check_func pthread_cancel $pthreads_extralibs
5944 fi
5945
5946 enabled pthreads &&
5947     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
5948
5949 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5950 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5951 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5952
5953 # On some systems dynamic loading requires no extra linker flags
5954 check_lib libdl dlfcn.h "dlopen dlsym" || check_lib libdl dlfcn.h "dlopen dlsym" -ldl
5955
5956 check_lib libm math.h sin -lm
5957
5958 atan2f_args=2
5959 copysign_args=2
5960 hypot_args=2
5961 ldexpf_args=2
5962 powf_args=2
5963
5964 for func in $MATH_FUNCS; do
5965     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
5966 done
5967
5968 for func in $COMPLEX_FUNCS; do
5969     eval check_complexfunc $func \${${func}_args:-1}
5970 done
5971
5972 # these are off by default, so fail if requested and not available
5973 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5974 enabled cuvid             && { enabled cuda ||
5975                                die "ERROR: CUVID requires CUDA"; }
5976 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5977 enabled decklink          && { require_header DeckLinkAPI.h &&
5978                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5979 enabled libndi_newtek     && require_header Processing.NDI.Lib.h
5980 enabled frei0r            && require_header frei0r.h
5981 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5982 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
5983 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5984 enabled ladspa            && require_header ladspa.h
5985 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5986 enabled libass            && require_pkg_config libass libass ass/ass.h ass_library_init
5987 enabled libbluray         && require_pkg_config libbluray libbluray libbluray/bluray.h bd_open
5988 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
5989 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5990                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5991                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5992 enabled libcaca           && require_pkg_config libcaca caca caca.h caca_create_canvas
5993 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
5994 enabled libdrm            && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
5995 enabled libfdk_aac        && { use_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5996                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5997                                  warn "using libfdk without pkg-config"; } }
5998 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"
5999 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
6000 enabled fontconfig        && enable libfontconfig
6001 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
6002 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
6003 enabled libfribidi        && require_pkg_config libfribidi fribidi fribidi.h fribidi_version_info
6004 enabled libgme            && { use_pkg_config libgme libgme gme/gme.h gme_new_emu ||
6005                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
6006 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
6007                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
6008                                done || die "ERROR: libgsm not found"; }
6009 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc $pthreads_extralibs
6010 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
6011 # While it may appear that require is being used as a pkg-config
6012 # fallback for libmfx, it is actually being used to detect a different
6013 # installation route altogether.  If libmfx is installed via the Intel
6014 # Media SDK or Intel Media Server Studio, these don't come with
6015 # pkg-config support.  Instead, users should make sure that the build
6016 # can find the libraries and headers through other means.
6017 enabled libmfx            && { use_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit ||
6018                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
6019 enabled libmodplug        && require_pkg_config libmodplug libmodplug libmodplug/modplug.h ModPlug_Load
6020 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
6021 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa $zlib_extralibs
6022 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
6023                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
6024                                die "ERROR: libnpp not found"; }
6025 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
6026 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
6027 enabled libopencv         && { check_header opencv2/core/core_c.h &&
6028                                { use_pkg_config libopencv opencv opencv2/core/core_c.h cvCreateImageHeader ||
6029                                  require libopencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
6030                                require_pkg_config libopencv opencv opencv/cxcore.h cvCreateImageHeader; }
6031 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
6032 enabled libopenjpeg       && { use_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version ||
6033                                { require_pkg_config libopenjpeg "libopenjp2 >= 2.1.0" openjpeg.h opj_version -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } }
6034 enabled libopenmpt        && require_pkg_config libopenmpt "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create -lstdc++ && append libopenmpt_extralibs "-lstdc++"
6035 enabled libopus           && {
6036     enabled libopus_decoder && {
6037         require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
6038     }
6039     enabled libopus_encoder && {
6040         require_pkg_config libopus opus opus_multistream.h opus_multistream_surround_encoder_create
6041     }
6042 }
6043 enabled libpulse          && require_pkg_config libpulse libpulse pulse/pulseaudio.h pa_context_new
6044 enabled librsvg           && require_pkg_config librsvg librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
6045 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
6046 enabled librubberband     && require_pkg_config librubberband "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new -lstdc++ && append librubberband_extralibs "-lstdc++"
6047 enabled libshine          && require_pkg_config libshine shine shine/layer3.h shine_encode_buffer
6048 enabled libsmbclient      && { use_pkg_config libsmbclient smbclient libsmbclient.h smbc_init ||
6049                                require libsmbclient libsmbclient.h smbc_init -lsmbclient; }
6050 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy -lstdc++
6051 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
6052 enabled libssh            && require_pkg_config libssh libssh libssh/sftp.h sftp_init
6053 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
6054 enabled libtesseract      && require_pkg_config libtesseract tesseract tesseract/capi.h TessBaseAPICreate
6055 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
6056 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
6057                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
6058                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
6059 enabled libv4l2           && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
6060 enabled libvidstab        && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
6061 enabled libvmaf           && require_pkg_config libvmaf libvmaf libvmaf.h compute_vmaf
6062 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
6063 enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h vorbis_info_init &&
6064                              require_pkg_config libvorbisenc vorbisenc vorbis/vorbisenc.h vorbis_encode_init
6065
6066 enabled libvpx            && {
6067     enabled libvpx_vp8_decoder && {
6068         use_pkg_config libvpx_vp8_decoder "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
6069             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
6070                 die "ERROR: libvpx decoder version must be >=0.9.1";
6071     }
6072     enabled libvpx_vp8_encoder && {
6073         use_pkg_config libvpx_vp8_encoder "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
6074             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
6075                 die "ERROR: libvpx encoder version must be >=0.9.7";
6076     }
6077     enabled libvpx_vp9_decoder && {
6078         use_pkg_config libvpx_vp9_decoder "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
6079             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
6080     }
6081     enabled libvpx_vp9_encoder && {
6082         use_pkg_config libvpx_vp9_encoder "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
6083             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
6084     }
6085     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
6086         die "libvpx enabled but no supported decoders found"
6087     fi
6088 }
6089
6090 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
6091 enabled libwebp           && {
6092     enabled libwebp_encoder      && require_pkg_config libwebp "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
6093     enabled libwebp_anim_encoder && use_pkg_config libwebp_anim_encoder "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit; }
6094 enabled libx264           && { use_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode ||
6095                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
6096                                  warn "using libx264 without pkg-config"; } } &&
6097                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
6098                              { check_cpp_condition x264.h "X264_MPEG2" &&
6099                                enable libx262; }
6100 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
6101                              require_cpp_condition x265.h "X265_BUILD >= 68"
6102 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode "-lxavs $pthreads_extralibs $libm_extralibs"
6103 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
6104 enabled libzimg           && require_pkg_config libzimg "zimg >= 2.3.0" zimg.h zimg_get_api_version
6105 enabled libzmq            && require_pkg_config libzmq libzmq zmq.h zmq_ctx_new
6106 enabled libzvbi           && require_pkg_config libzvbi zvbi-0.2 libzvbi.h vbi_decoder_new &&
6107                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
6108                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
6109 enabled libxml2           && require_pkg_config libxml2 libxml-2.0 libxml2/libxml/xmlversion.h xmlCheckVersion
6110 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
6111 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
6112                                { ! enabled cross_compile &&
6113                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
6114                                  add_ldflags -L/opt/vc/lib/ &&
6115                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
6116                                die "ERROR: mmal not found" &&
6117                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
6118 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
6119                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
6120                                die "ERROR: openal not found"; } &&
6121                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
6122                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
6123 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
6124                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
6125                                die "ERROR: opencl not found"; } &&
6126                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
6127                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
6128                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
6129 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
6130                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6131                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6132                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6133                                die "ERROR: opengl not found."
6134                              }
6135 enabled omx               && require_header OMX_Core.h
6136 enabled omx_rpi           && { check_header OMX_Core.h ||
6137                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6138                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
6139 enabled openssl           && { use_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
6140                                use_pkg_config openssl openssl openssl/ssl.h SSL_library_init ||
6141                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6142                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6143                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6144                                die "ERROR: openssl not found"; }
6145 enabled rkmpp             && { { require_pkg_config rkmpp rockchip_mpp rockchip/rk_mpi.h mpp_create ||
6146                                  die "ERROR : Rockchip MPP was not found."; } &&
6147                                { check_func_headers rockchip/rk_mpi_cmd.h "MPP_DEC_GET_FREE_PACKET_SLOT_COUNT" ||
6148                                  die "ERROR: Rockchip MPP is outdated, please get a more recent one."; } &&
6149                                { enabled libdrm ||
6150                                  die "ERROR: rkmpp requires --enable-libdrm"; }
6151                              }
6152
6153 if enabled gcrypt; then
6154     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6155     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6156         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6157         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6158         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6159             die "ERROR: gcrypt not found"
6160         add_cflags $gcrypt_cflags
6161     else
6162         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6163     fi
6164 fi
6165
6166 if enabled sdl2; then
6167     SDL2_CONFIG="${cross_prefix}sdl2-config"
6168     if check_pkg_config sdl2 "sdl2 >= 2.0.1 sdl2 < 2.1.0" SDL_events.h SDL_PollEvent; then
6169         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6170             disable sdl2
6171     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6172         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6173         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6174         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6175         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6176         check_func SDL_Init $sdl2_extralibs $sdl2_cflags &&
6177             enable sdl2
6178     fi
6179     if test $target_os = "mingw32"; then
6180         sdl2_extralibs=$(filter_out '-mwindows' $sdl2_extralibs)
6181     fi
6182 fi
6183
6184 if enabled decklink; then
6185     case $target_os in
6186         mingw32*|mingw64*|win32|win64)
6187             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6188             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6189             ;;
6190     esac
6191 fi
6192
6193 enabled securetransport &&
6194     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6195     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6196         disable securetransport
6197
6198 enabled schannel &&
6199     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6200     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6201     schannel_extralibs="-lsecur32" ||
6202         disable schannel
6203
6204 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6205 enabled makeinfo \
6206     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6207     && enable makeinfo_html || disable makeinfo_html
6208 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6209 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6210 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6211 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6212
6213 # check V4L2 codecs available in the API
6214 check_header linux/fb.h
6215 check_header linux/videodev2.h
6216 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6217 check_code cc linux/videodev2.h "int i = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_VIDEO_M2M | V4L2_BUF_FLAG_LAST;" || disable v4l2_m2m
6218 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VC1_ANNEX_G;" && enable vc1_v4l2_m2m
6219 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG1;" && enable mpeg1_v4l2_m2m
6220 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG2;" && enable mpeg2_v4l2_m2m
6221 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_MPEG4;" && enable mpeg4_v4l2_m2m
6222 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_HEVC;" && enable hevc_v4l2_m2m
6223 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H263;" && enable h263_v4l2_m2m
6224 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_H264;" && enable h264_v4l2_m2m
6225 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP8;" && enable vp8_v4l2_m2m
6226 check_code cc linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;" && enable vp9_v4l2_m2m
6227
6228 check_header sys/videoio.h
6229 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6230
6231 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6232 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6233 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6234 # w32api 3.12 had it defined wrong
6235 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6236
6237 check_type "dshow.h" IBaseFilter
6238
6239 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6240 { check_header dev/bktr/ioctl_meteor.h &&
6241   check_header dev/bktr/ioctl_bt848.h; } ||
6242 { check_header machine/ioctl_meteor.h &&
6243   check_header machine/ioctl_bt848.h; } ||
6244 { check_header dev/video/meteor/ioctl_meteor.h &&
6245   check_header dev/video/bktr/ioctl_bt848.h; } ||
6246 check_header dev/ic/bt8xx.h
6247
6248 if check_struct sys/soundcard.h audio_buf_info bytes; then
6249     enable_safe sys/soundcard.h
6250 else
6251     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6252     #include <sys/soundcard.h>
6253     audio_buf_info abc;
6254 EOF
6255 fi
6256 check_header soundcard.h
6257
6258 enabled alsa && use_pkg_config alsa alsa "alsa/asoundlib.h" snd_pcm_htimestamp ||
6259     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6260
6261 if enabled libjack; then
6262     check_pkg_config libjack jack jack/jack.h jack_port_get_latency_range ||
6263     require_pkg_config libjack jack jack/jack.h jack_client_open
6264 fi
6265
6266 enabled sndio && check_lib sndio sndio.h sio_open -lsndio
6267
6268 if enabled libcdio; then
6269     use_pkg_config libcdio libcdio_paranoia "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open ||
6270     use_pkg_config libcdio libcdio_paranoia "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open ||
6271     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6272     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6273     die "ERROR: No usable libcdio/cdparanoia found"
6274 fi
6275
6276 enabled libxcb && use_pkg_config libxcb "xcb >= 1.4" xcb/xcb.h xcb_connect ||
6277     disable libxcb_shm libxcb_shape libxcb_xfixes
6278
6279 if enabled libxcb; then
6280     enabled libxcb_shm    && use_pkg_config libxcb_shm    xcb-shm    xcb/shm.h    xcb_shm_attach
6281     enabled libxcb_shape  && use_pkg_config libxcb_shape  xcb-shape  xcb/shape.h  xcb_shape_get_rectangles
6282     enabled libxcb_xfixes && use_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
6283 fi
6284
6285 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6286
6287 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6288 # the desktop api partition
6289 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6290 #ifdef WINAPI_FAMILY
6291 #include <winapifamily.h>
6292 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6293 #error desktop, not uwp
6294 #else
6295 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6296 #endif
6297 #else
6298 #error no family set
6299 #endif
6300 EOF
6301
6302 enabled vaapi &&
6303     check_lib vaapi va/va.h vaInitialize -lva
6304
6305 enabled vaapi &&
6306     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6307     disable vaapi
6308
6309 enabled vaapi &&
6310     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6311
6312 enabled vaapi &&
6313     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6314
6315 enabled vaapi &&
6316     check_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
6317     enable vaapi_1
6318
6319 enabled vdpau &&
6320     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6321     disable vdpau
6322
6323 enabled vdpau &&
6324     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6325
6326 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6327
6328 if enabled x86; then
6329     case $target_os in
6330         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6331             ;;
6332         *)
6333             disable cuda cuvid nvenc
6334             ;;
6335     esac
6336 else
6337     disable cuda cuvid nvenc
6338 fi
6339
6340 enabled nvenc &&
6341     check_cc -I$source_path <<EOF || disable nvenc
6342 #include "compat/nvenc/nvEncodeAPI.h"
6343 NV_ENCODE_API_FUNCTION_LIST flist;
6344 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6345 int main(void) { return 0; }
6346 EOF
6347
6348 # Funny iconv installations are not unusual, so check it after all flags have been set
6349 if enabled libc_iconv; then
6350     check_func_headers iconv.h iconv
6351 elif enabled iconv; then
6352     check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6353 fi
6354
6355 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6356
6357 # add some useful compiler flags if supported
6358 check_cflags -Wdeclaration-after-statement
6359 check_cflags -Wall
6360 check_cflags -Wdisabled-optimization
6361 check_cflags -Wpointer-arith
6362 check_cflags -Wredundant-decls
6363 check_cflags -Wwrite-strings
6364 check_cflags -Wtype-limits
6365 check_cflags -Wundef
6366 check_cflags -Wmissing-prototypes
6367 check_cflags -Wno-pointer-to-int-cast
6368 check_cflags -Wstrict-prototypes
6369 check_cflags -Wempty-body
6370
6371 if enabled extra_warnings; then
6372     check_cflags -Wcast-qual
6373     check_cflags -Wextra
6374     check_cflags -Wpedantic
6375 fi
6376
6377 check_disable_warning(){
6378     warning_flag=-W${1#-Wno-}
6379     test_cflags $unknown_warning_flags $warning_flag && add_cflags $1
6380 }
6381
6382 test_cflags -Werror=unused-command-line-argument &&
6383     append unknown_warning_flags "-Werror=unused-command-line-argument"
6384 test_cflags -Werror=unknown-warning-option &&
6385     append unknown_warning_flags "-Werror=unknown-warning-option"
6386
6387 check_disable_warning -Wno-parentheses
6388 check_disable_warning -Wno-switch
6389 check_disable_warning -Wno-format-zero-length
6390 check_disable_warning -Wno-pointer-sign
6391 check_disable_warning -Wno-unused-const-variable
6392 check_disable_warning -Wno-bool-operation
6393
6394 check_disable_warning_headers(){
6395     warning_flag=-W${1#-Wno-}
6396     test_cflags $warning_flag && add_cflags_headers $1
6397 }
6398
6399 check_disable_warning_headers -Wno-deprecated-declarations
6400 check_disable_warning_headers -Wno-unused-variable
6401
6402 check_cc <<EOF && enable blocks_extension
6403 void (^block)(void);
6404 EOF
6405
6406 # add some linker flags
6407 check_ldflags -Wl,--warn-common
6408 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6409 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6410 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6411 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6412
6413 # add some strip flags
6414 check_stripflags -x
6415
6416 enabled neon_clobber_test &&
6417     check_ldflags -Wl,--wrap,avcodec_open2              \
6418                   -Wl,--wrap,avcodec_decode_audio4      \
6419                   -Wl,--wrap,avcodec_decode_video2      \
6420                   -Wl,--wrap,avcodec_decode_subtitle2   \
6421                   -Wl,--wrap,avcodec_encode_audio2      \
6422                   -Wl,--wrap,avcodec_encode_video2      \
6423                   -Wl,--wrap,avcodec_encode_subtitle    \
6424                   -Wl,--wrap,avcodec_send_packet        \
6425                   -Wl,--wrap,avcodec_receive_packet     \
6426                   -Wl,--wrap,avcodec_send_frame         \
6427                   -Wl,--wrap,avcodec_receive_frame      \
6428                   -Wl,--wrap,swr_convert                \
6429                   -Wl,--wrap,avresample_convert ||
6430     disable neon_clobber_test
6431
6432 enabled xmm_clobber_test &&
6433     check_ldflags -Wl,--wrap,avcodec_open2              \
6434                   -Wl,--wrap,avcodec_decode_audio4      \
6435                   -Wl,--wrap,avcodec_decode_video2      \
6436                   -Wl,--wrap,avcodec_decode_subtitle2   \
6437                   -Wl,--wrap,avcodec_encode_audio2      \
6438                   -Wl,--wrap,avcodec_encode_video2      \
6439                   -Wl,--wrap,avcodec_encode_subtitle    \
6440                   -Wl,--wrap,avcodec_send_packet        \
6441                   -Wl,--wrap,avcodec_receive_packet     \
6442                   -Wl,--wrap,avcodec_send_frame         \
6443                   -Wl,--wrap,avcodec_receive_frame      \
6444                   -Wl,--wrap,swr_convert                \
6445                   -Wl,--wrap,avresample_convert         \
6446                   -Wl,--wrap,sws_scale ||
6447     disable xmm_clobber_test
6448
6449 check_ld "cc" <<EOF && enable proper_dce
6450 extern const int array[512];
6451 static inline int func(void) { return array[0]; }
6452 int main(void) { return 0; }
6453 EOF
6454
6455 if enabled proper_dce; then
6456     echo "X { local: *; };" > $TMPV
6457     if test_ldflags -Wl,${version_script},$TMPV; then
6458         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6459         check_cc <<EOF && enable symver_asm_label
6460 void ff_foo(void) __asm__ ("av_foo@VERSION");
6461 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6462 EOF
6463         check_cc <<EOF && enable symver_gnu_asm
6464 __asm__(".symver ff_foo,av_foo@VERSION");
6465 void ff_foo(void) {}
6466 EOF
6467     fi
6468 fi
6469
6470 if [ -z "$optflags" ]; then
6471     if enabled small; then
6472         optflags=$cflags_size
6473     elif enabled optimizations; then
6474         optflags=$cflags_speed
6475     else
6476         optflags=$cflags_noopt
6477     fi
6478 fi
6479
6480 if [ -z "$nvccflags" ]; then
6481     nvccflags=$nvccflags_default
6482 fi
6483
6484 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6485     nvccflags="$nvccflags -m64"
6486 else
6487     nvccflags="$nvccflags -m32"
6488 fi
6489
6490 check_optflags(){
6491     check_cflags "$@"
6492     enabled lto && check_ldflags "$@"
6493 }
6494
6495 check_optflags $optflags
6496 check_optflags -fno-math-errno
6497 check_optflags -fno-signed-zeros
6498
6499 if enabled lto; then
6500     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6501     check_cflags  -flto
6502     check_ldflags -flto $cpuflags
6503     disable inline_asm_direct_symbol_refs
6504 fi
6505
6506 enabled ftrapv && check_cflags -ftrapv
6507
6508 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6509 int x;
6510 EOF
6511
6512
6513 if enabled icc; then
6514     # Just warnings, no remarks
6515     check_cflags -w1
6516     # -wd: Disable following warnings
6517     # 144, 167, 556: -Wno-pointer-sign
6518     # 188: enumerated type mixed with another type
6519     # 1292: attribute "foo" ignored
6520     # 1419: external declaration in primary source file
6521     # 10006: ignoring unknown option -fno-signed-zeros
6522     # 10148: ignoring unknown option -Wno-parentheses
6523     # 10156: ignoring option '-W'; no argument required
6524     # 13200: No EMMS instruction before call to function
6525     # 13203: No EMMS instruction before return from function
6526     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6527     # 11030: Warning unknown option --as-needed
6528     # 10156: ignoring option '-export'; no argument required
6529     check_ldflags -wd10156,11030
6530     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6531     enable ebp_available
6532     # The test above does not test linking
6533     enabled lto && disable symver_asm_label
6534     if enabled x86_32; then
6535         icc_version=$($cc -dumpversion)
6536         test ${icc_version%%.*} -ge 11 &&
6537             check_cflags -falign-stack=maintain-16-byte ||
6538             disable aligned_stack
6539     fi
6540 elif enabled ccc; then
6541     # disable some annoying warnings
6542     add_cflags -msg_disable bitnotint
6543     add_cflags -msg_disable mixfuncvoid
6544     add_cflags -msg_disable nonstandcast
6545     add_cflags -msg_disable unsupieee
6546 elif enabled gcc; then
6547     check_optflags -fno-tree-vectorize
6548     check_cflags -Werror=format-security
6549     check_cflags -Werror=implicit-function-declaration
6550     check_cflags -Werror=missing-prototypes
6551     check_cflags -Werror=return-type
6552     check_cflags -Werror=vla
6553     check_cflags -Wformat
6554     check_cflags -fdiagnostics-color=auto
6555     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6556 elif enabled llvm_gcc; then
6557     check_cflags -mllvm -stack-alignment=16
6558 elif enabled clang; then
6559     check_cflags -mllvm -stack-alignment=16
6560     check_cflags -mstack-alignment=16
6561     check_cflags -Qunused-arguments
6562     check_cflags -Werror=implicit-function-declaration
6563     check_cflags -Werror=missing-prototypes
6564     check_cflags -Werror=return-type
6565 elif enabled cparser; then
6566     add_cflags -Wno-missing-variable-declarations
6567     add_cflags -Wno-empty-statement
6568 elif enabled armcc; then
6569     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6570     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6571     # 2523: use of inline assembly is deprecated
6572     add_cflags -W${armcc_opt},--diag_suppress=2523
6573     add_cflags -W${armcc_opt},--diag_suppress=1207
6574     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6575     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6576     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6577     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6578 elif enabled tms470; then
6579     add_cflags -pds=824 -pds=837
6580     disable inline_asm
6581 elif enabled pathscale; then
6582     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6583 elif enabled_any msvc icl; then
6584     enabled x86_32 && disable aligned_stack
6585     enabled_all x86_32 debug && add_cflags -Oy-
6586     enabled debug && add_ldflags -debug
6587     enable pragma_deprecated
6588     if enabled icl; then
6589         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6590         # (correctly) on icl 13.x.
6591         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6592             add_cflags -Qansi-alias
6593         # Some inline asm is not compilable in debug
6594         if enabled debug; then
6595             disable ebp_available
6596             disable ebx_available
6597         fi
6598     fi
6599     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6600     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6601     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6602     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6603     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6604     # MSVC 2013 and newer can handle it fine.
6605     # If this declspec fails, force including stdlib.h before the restrict redefinition
6606     # happens in config.h.
6607     if [ $_restrict != restrict ]; then
6608         check_cc <<EOF || add_cflags -FIstdlib.h
6609 __declspec($_restrict) void* foo(int);
6610 EOF
6611     fi
6612     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6613     # Issue has been fixed in MSVC v19.00.24218.
6614     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6615         check_cflags -d2SSAOptimizer-
6616     # enable utf-8 source processing on VS2015 U2 and newer
6617     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6618         add_cflags -utf-8
6619 fi
6620
6621 for pfx in "" host_; do
6622     varname=${pfx%_}cc_type
6623     eval "type=\$$varname"
6624     if [ "$type" = "msvc" ]; then
6625         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6626 static inline int foo(int a) { return a; }
6627 EOF
6628     fi
6629 done
6630
6631 case $as_type in
6632     clang)
6633         add_asflags -Qunused-arguments
6634     ;;
6635 esac
6636
6637 case $ld_type in
6638     clang)
6639         check_ldflags -Qunused-arguments
6640     ;;
6641 esac
6642
6643 case $target_os in
6644     osf1)
6645         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6646     ;;
6647 esac
6648
6649 enable frame_thread_encoder
6650
6651 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6652
6653 check_deps $CONFIG_LIST       \
6654            $CONFIG_EXTRA      \
6655            $HAVE_LIST         \
6656            $ALL_COMPONENTS    \
6657
6658 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"
6659
6660
6661 if test $target_os = "haiku"; then
6662     disable memalign
6663     disable posix_memalign
6664 fi
6665
6666 flatten_extralibs(){
6667     unset nested_entries
6668     list_name=$1
6669     eval list=\$${1}
6670     for entry in $list; do
6671         entry_copy=$entry
6672         resolve entry_copy
6673         append nested_entries $(filter '*_extralibs' $entry_copy)
6674         flat_entries=$(filter_out '*_extralibs' $entry_copy)
6675         eval $entry="\$flat_entries"
6676     done
6677     append $list_name "$nested_entries"
6678
6679     resolve nested_entries
6680     if test -n "$(filter '*_extralibs' $nested_entries)"; then
6681         flatten_extralibs $list_name
6682     fi
6683 }
6684
6685 for linkunit in $LIBRARY_LIST; do
6686     unset current_extralibs
6687     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
6688     for comp in ${components}; do
6689         enabled $comp || continue
6690         comp_extralibs="${comp}_extralibs"
6691         append current_extralibs $comp_extralibs
6692     done
6693     eval prepend ${linkunit}_extralibs $current_extralibs
6694 done
6695
6696 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
6697     flatten_extralibs ${linkunit}_extralibs
6698     unique  ${linkunit}_extralibs
6699     resolve ${linkunit}_extralibs
6700     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
6701 done
6702
6703 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6704
6705 for thread in $THREADS_LIST; do
6706     if enabled $thread; then
6707         test -n "$thread_type" &&
6708             die "ERROR: Only one thread type must be selected." ||
6709             thread_type="$thread"
6710     fi
6711 done
6712
6713 if disabled stdatomic_h; then
6714     if enabled atomics_gcc; then
6715         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6716     elif enabled atomics_win32; then
6717         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6718     elif enabled atomics_suncc; then
6719         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6720     elif enabled pthreads; then
6721         add_compat atomics/pthread/stdatomic.o
6722         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6723     else
6724         enabled threads && die "Threading is enabled, but no atomics are available"
6725         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6726     fi
6727 fi
6728
6729 # Check if requested libraries were found.
6730 for lib in $AUTODETECT_LIBS; do
6731     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6732 done
6733
6734 enabled zlib && add_cppflags -DZLIB_CONST
6735
6736 # conditional library dependencies, in linking order
6737 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6738 enabled afir_filter         && prepend avfilter_deps "avcodec"
6739 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6740 enabled aresample_filter    && prepend avfilter_deps "swresample"
6741 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6742 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6743 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6744 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6745 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6746 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6747 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6748 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6749 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6750 enabled pan_filter          && prepend avfilter_deps "swresample"
6751 enabled pp_filter           && prepend avfilter_deps "postproc"
6752 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6753 enabled resample_filter && prepend avfilter_deps "avresample"
6754 enabled sab_filter          && prepend avfilter_deps "swscale"
6755 enabled scale_filter    && prepend avfilter_deps "swscale"
6756 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6757 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6758 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6759 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6760 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6761 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6762 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6763 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6764 enabled spp_filter          && prepend avfilter_deps "avcodec"
6765 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6766 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6767 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6768
6769 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6770
6771 #FIXME
6772 enabled sdl2_outdev     && add_cflags $(filter_out '-Dmain=SDL_main' $sdl2_cflags)
6773
6774 enabled opus_decoder    && prepend avcodec_deps "swresample"
6775
6776 expand_deps(){
6777     lib_deps=${1}_deps
6778     eval "deps=\$$lib_deps"
6779     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6780     unique $lib_deps
6781 }
6782
6783 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6784 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6785
6786 map 'expand_deps $v' $LIBRARY_LIST
6787
6788 license="LGPL version 2.1 or later"
6789 if enabled nonfree; then
6790     license="nonfree and unredistributable"
6791 elif enabled gplv3; then
6792     license="GPL version 3 or later"
6793 elif enabled lgplv3; then
6794     license="LGPL version 3 or later"
6795 elif enabled gpl; then
6796     license="GPL version 2 or later"
6797 fi
6798
6799 if test "$quiet" != "yes"; then
6800
6801 echo "install prefix            $prefix"
6802 echo "source path               $source_path"
6803 echo "C compiler                $cc"
6804 echo "C library                 $libc_type"
6805 if test "$host_cc" != "$cc"; then
6806     echo "host C compiler           $host_cc"
6807     echo "host C library            $host_libc_type"
6808 fi
6809 echo "ARCH                      $arch ($cpu)"
6810 if test "$build_suffix" != ""; then
6811     echo "build suffix              $build_suffix"
6812 fi
6813 if test "$progs_suffix" != ""; then
6814     echo "progs suffix              $progs_suffix"
6815 fi
6816 if test "$extra_version" != ""; then
6817     echo "version string suffix     $extra_version"
6818 fi
6819 echo "big-endian                ${bigendian-no}"
6820 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6821 if enabled x86; then
6822     echo "standalone assembly       ${x86asm-no}"
6823     echo "x86 assembler             ${x86asmexe}"
6824     echo "MMX enabled               ${mmx-no}"
6825     echo "MMXEXT enabled            ${mmxext-no}"
6826     echo "3DNow! enabled            ${amd3dnow-no}"
6827     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6828     echo "SSE enabled               ${sse-no}"
6829     echo "SSSE3 enabled             ${ssse3-no}"
6830     echo "AESNI enabled             ${aesni-no}"
6831     echo "AVX enabled               ${avx-no}"
6832     echo "AVX2 enabled              ${avx2-no}"
6833     echo "XOP enabled               ${xop-no}"
6834     echo "FMA3 enabled              ${fma3-no}"
6835     echo "FMA4 enabled              ${fma4-no}"
6836     echo "i686 features enabled     ${i686-no}"
6837     echo "CMOV is fast              ${fast_cmov-no}"
6838     echo "EBX available             ${ebx_available-no}"
6839     echo "EBP available             ${ebp_available-no}"
6840 fi
6841 if enabled aarch64; then
6842     echo "NEON enabled              ${neon-no}"
6843     echo "VFP enabled               ${vfp-no}"
6844 fi
6845 if enabled arm; then
6846     echo "ARMv5TE enabled           ${armv5te-no}"
6847     echo "ARMv6 enabled             ${armv6-no}"
6848     echo "ARMv6T2 enabled           ${armv6t2-no}"
6849     echo "VFP enabled               ${vfp-no}"
6850     echo "NEON enabled              ${neon-no}"
6851     echo "THUMB enabled             ${thumb-no}"
6852 fi
6853 if enabled mips; then
6854     echo "MIPS FPU enabled          ${mipsfpu-no}"
6855     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6856     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6857     echo "MIPS MSA enabled          ${msa-no}"
6858     echo "LOONGSON MMI enabled      ${mmi-no}"
6859 fi
6860 if enabled ppc; then
6861     echo "AltiVec enabled           ${altivec-no}"
6862     echo "VSX enabled               ${vsx-no}"
6863     echo "POWER8 enabled            ${power8-no}"
6864     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6865     echo "dcbzl available           ${dcbzl-no}"
6866 fi
6867 echo "debug symbols             ${debug-no}"
6868 echo "strip symbols             ${stripping-no}"
6869 echo "optimize for size         ${small-no}"
6870 echo "optimizations             ${optimizations-no}"
6871 echo "static                    ${static-no}"
6872 echo "shared                    ${shared-no}"
6873 echo "postprocessing support    ${postproc-no}"
6874 echo "network support           ${network-no}"
6875 echo "threading support         ${thread_type-no}"
6876 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6877 echo "texi2html enabled         ${texi2html-no}"
6878 echo "perl enabled              ${perl-no}"
6879 echo "pod2man enabled           ${pod2man-no}"
6880 echo "makeinfo enabled          ${makeinfo-no}"
6881 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6882 test -n "$random_seed" &&
6883     echo "random seed               ${random_seed}"
6884 echo
6885
6886 echo "External libraries:"
6887 print_enabled '' $EXTERNAL_LIBRARY_LIST $EXTERNAL_AUTODETECT_LIBRARY_LIST | print_in_columns
6888 echo
6889
6890 echo "External libraries providing hardware acceleration:"
6891 print_enabled '' $HWACCEL_LIBRARY_LIST $HWACCEL_AUTODETECT_LIBRARY_LIST | print_in_columns
6892 echo
6893
6894 echo "Libraries:"
6895 print_enabled '' $LIBRARY_LIST | print_in_columns
6896 echo
6897
6898 echo "Programs:"
6899 print_enabled '' $PROGRAM_LIST | print_in_columns
6900 echo
6901
6902 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6903     echo "Enabled ${type}s:"
6904     eval list=\$$(toupper $type)_LIST
6905     print_enabled '_*' $list | print_in_columns
6906     echo
6907 done
6908
6909 if test -n "$ignore_tests"; then
6910     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6911     echo "Ignored FATE tests:"
6912     echo $ignore_tests | print_in_columns
6913     echo
6914 fi
6915
6916 echo "License: $license"
6917
6918 echo "Creating configuration files ..."
6919
6920 fi # test "$quiet" != "yes"
6921
6922 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6923
6924 enabled stripping || strip="echo skipping strip"
6925 enabled stripping || striptype=""
6926
6927 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6928
6929 cat > ffbuild/config.mak <<EOF
6930 # Automatically generated by configure - do not modify!
6931 ifndef FFMPEG_CONFIG_MAK
6932 FFMPEG_CONFIG_MAK=1
6933 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6934 prefix=$prefix
6935 LIBDIR=\$(DESTDIR)$libdir
6936 SHLIBDIR=\$(DESTDIR)$shlibdir
6937 INCDIR=\$(DESTDIR)$incdir
6938 BINDIR=\$(DESTDIR)$bindir
6939 DATADIR=\$(DESTDIR)$datadir
6940 DOCDIR=\$(DESTDIR)$docdir
6941 MANDIR=\$(DESTDIR)$mandir
6942 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6943 INSTALL_NAME_DIR=$install_name_dir
6944 SRC_PATH=$source_path
6945 SRC_LINK=$source_link
6946 ifndef MAIN_MAKEFILE
6947 SRC_PATH:=\$(SRC_PATH:.%=..%)
6948 endif
6949 CC_IDENT=$cc_ident
6950 ARCH=$arch
6951 INTRINSICS=$intrinsics
6952 CC=$cc
6953 CXX=$cxx
6954 AS=$as
6955 OBJCC=$objcc
6956 LD=$ld
6957 DEPCC=$dep_cc
6958 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6959 DEPAS=$as
6960 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6961 X86ASM=$x86asmexe
6962 DEPX86ASM=$x86asmexe
6963 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6964 AR=$ar
6965 ARFLAGS=$arflags
6966 AR_O=$ar_o
6967 RANLIB=$ranlib
6968 STRIP=$strip
6969 STRIPTYPE=$striptype
6970 NVCC=$nvcc
6971 CP=cp -p
6972 LN_S=$ln_s
6973 CPPFLAGS=$CPPFLAGS
6974 CFLAGS=$CFLAGS
6975 CXXFLAGS=$CXXFLAGS
6976 OBJCFLAGS=$OBJCFLAGS
6977 ASFLAGS=$ASFLAGS
6978 NVCCFLAGS=$nvccflags
6979 AS_C=$AS_C
6980 AS_O=$AS_O
6981 OBJCC_C=$OBJCC_C
6982 OBJCC_E=$OBJCC_E
6983 OBJCC_O=$OBJCC_O
6984 CC_C=$CC_C
6985 CC_E=$CC_E
6986 CC_O=$CC_O
6987 CXX_C=$CXX_C
6988 CXX_O=$CXX_O
6989 NVCC_C=$NVCC_C
6990 NVCC_O=$NVCC_O
6991 LD_O=$LD_O
6992 X86ASM_O=$X86ASM_O
6993 LD_LIB=$LD_LIB
6994 LD_PATH=$LD_PATH
6995 DLLTOOL=$dlltool
6996 WINDRES=$windres
6997 DEPWINDRES=$dep_cc
6998 DOXYGEN=$doxygen
6999 LDFLAGS=$LDFLAGS
7000 LDEXEFLAGS=$LDEXEFLAGS
7001 LDLIBFLAGS=$LDLIBFLAGS
7002 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
7003 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
7004 X86ASMFLAGS=$X86ASMFLAGS
7005 BUILDSUF=$build_suffix
7006 PROGSSUF=$progs_suffix
7007 FULLNAME=$FULLNAME
7008 LIBPREF=$LIBPREF
7009 LIBSUF=$LIBSUF
7010 LIBNAME=$LIBNAME
7011 SLIBPREF=$SLIBPREF
7012 SLIBSUF=$SLIBSUF
7013 EXESUF=$EXESUF
7014 EXTRA_VERSION=$extra_version
7015 CCDEP=$CCDEP
7016 CXXDEP=$CXXDEP
7017 CCDEP_FLAGS=$CCDEP_FLAGS
7018 ASDEP=$ASDEP
7019 ASDEP_FLAGS=$ASDEP_FLAGS
7020 X86ASMDEP=$X86ASMDEP
7021 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
7022 CC_DEPFLAGS=$CC_DEPFLAGS
7023 AS_DEPFLAGS=$AS_DEPFLAGS
7024 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
7025 HOSTCC=$host_cc
7026 HOSTLD=$host_ld
7027 HOSTCFLAGS=$host_cflags
7028 HOSTCPPFLAGS=$host_cppflags
7029 HOSTEXESUF=$HOSTEXESUF
7030 HOSTLDFLAGS=$host_ldflags
7031 HOSTEXTRALIBS=$host_extralibs
7032 DEPHOSTCC=$host_cc
7033 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
7034 HOSTCCDEP=$HOSTCCDEP
7035 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
7036 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
7037 HOSTCC_C=$HOSTCC_C
7038 HOSTCC_O=$HOSTCC_O
7039 HOSTLD_O=$HOSTLD_O
7040 TARGET_EXEC=$target_exec $target_exec_args
7041 TARGET_PATH=$target_path
7042 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
7043 CFLAGS-ffplay=${sdl2_cflags}
7044 CFLAGS_HEADERS=$CFLAGS_HEADERS
7045 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
7046 EXTRALIBS=$extralibs
7047 COMPAT_OBJS=$compat_objs
7048 INSTALL=$install
7049 LIBTARGET=${LIBTARGET}
7050 SLIBNAME=${SLIBNAME}
7051 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
7052 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
7053 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
7054 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
7055 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
7056 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
7057 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
7058 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
7059 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
7060 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
7061 NOREDZONE_FLAGS=$noredzone_flags
7062 LIBFUZZER_PATH=$libfuzzer_path
7063 IGNORE_TESTS=$ignore_tests
7064 EOF
7065
7066 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
7067
7068 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
7069     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> ffbuild/config.mak
7070 done
7071
7072 cat > $TMPH <<EOF
7073 /* Automatically generated by configure - do not modify! */
7074 #ifndef FFMPEG_CONFIG_H
7075 #define FFMPEG_CONFIG_H
7076 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
7077 #define FFMPEG_LICENSE "$(c_escape $license)"
7078 #define CONFIG_THIS_YEAR 2017
7079 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
7080 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
7081 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
7082 #define av_restrict $_restrict
7083 #define EXTERN_PREFIX "${extern_prefix}"
7084 #define EXTERN_ASM ${extern_prefix}
7085 #define BUILDSUF "$build_suffix"
7086 #define SLIBSUF "$SLIBSUF"
7087 #define HAVE_MMX2 HAVE_MMXEXT
7088 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
7089 EOF
7090
7091 test -n "$assert_level" &&
7092     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
7093
7094 test -n "$malloc_prefix" &&
7095     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
7096
7097 if enabled x86asm; then
7098     append config_files $TMPASM
7099     printf '' >$TMPASM
7100 fi
7101
7102 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
7103
7104
7105 mkdir -p doc
7106 mkdir -p tests
7107 mkdir -p tests/api
7108 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
7109
7110 print_config ARCH_   "$config_files" $ARCH_LIST
7111 print_config HAVE_   "$config_files" $HAVE_LIST
7112 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
7113                                      $CONFIG_EXTRA      \
7114                                      $ALL_COMPONENTS    \
7115
7116 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
7117 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
7118
7119 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
7120 cp_if_changed $TMPH config.h
7121 touch ffbuild/.config
7122
7123 enabled x86asm && cp_if_changed $TMPASM config.asm
7124
7125 cat > $TMPH <<EOF
7126 /* Generated by ffconf */
7127 #ifndef AVUTIL_AVCONFIG_H
7128 #define AVUTIL_AVCONFIG_H
7129 EOF
7130
7131 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
7132
7133 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
7134
7135 cp_if_changed $TMPH libavutil/avconfig.h
7136
7137 # generate the lists of enabled components
7138 print_enabled_components(){
7139     file=$1
7140     struct_name=$2
7141     name=$3
7142     shift 3
7143     echo "static const $struct_name * const $name[] = {" > $TMPH
7144     for c in $*; do
7145         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
7146     done
7147     echo "    NULL };" >> $TMPH
7148     cp_if_changed $TMPH $file
7149 }
7150
7151 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
7152 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
7153
7154 if test -n "$WARNINGS"; then
7155     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
7156     enabled fatal_warnings && exit 1
7157 fi
7158
7159 # Settings for pkg-config files
7160
7161 cat > ffbuild/config.sh <<EOF
7162 # Automatically generated by configure - do not modify!
7163 shared=$shared
7164 build_suffix=$build_suffix
7165 prefix=$prefix
7166 libdir=$libdir
7167 incdir=$incdir
7168 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7169 source_path=${source_path}
7170 LIBPREF=${LIBPREF}
7171 LIBSUF=${LIBSUF}
7172 extralibs_avutil="$avutil_extralibs"
7173 extralibs_avcodec="$avcodec_extralibs"
7174 extralibs_avformat="$avformat_extralibs"
7175 extralibs_avdevice="$avdevice_extralibs"
7176 extralibs_avfilter="$avfilter_extralibs"
7177 extralibs_avresample="$avresample_extralibs"
7178 extralibs_postproc="$postproc_extralibs"
7179 extralibs_swscale="$swscale_extralibs"
7180 extralibs_swresample="$swresample_extralibs"
7181 EOF
7182
7183 for lib in $LIBRARY_LIST; do
7184     lib_deps="$(eval echo \$${lib}_deps)"
7185     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7186 done