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:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94   --install-name-dir=DIR   Darwin directory name for installed targets
  95
  96 Licensing options:
  97   --enable-gpl             allow use of GPL code, the resulting libs
  98                            and binaries will be under GPL [no]
  99   --enable-version3        upgrade (L)GPL to version 3 [no]
 100   --enable-nonfree         allow use of nonfree code, the resulting libs
 101                            and binaries will be unredistributable [no]
 102
 103 Configuration options:
 104   --disable-static         do not build static libraries [no]
 105   --enable-shared          build shared libraries [no]
 106   --enable-small           optimize for size instead of speed
 107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 108   --enable-gray            enable full grayscale support (slower color)
 109   --disable-swscale-alpha  disable alpha channel support in swscale
 110   --disable-all            disable building components, libraries and programs
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --enable-avisynth        enable reading of AviSynth script files [no]
 204   --disable-bzlib          disable bzlib [autodetect]
 205   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 206   --enable-frei0r          enable frei0r video filtering [no]
 207   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 208                            if openssl, librtmp or gmp is not used [no]
 209   --enable-gmp             enable gmp, needed for rtmp(t)e support
 210                            if openssl or librtmp is not used [no]
 211   --enable-gnutls          enable gnutls, needed for https support
 212                            if openssl is not used [no]
 213   --disable-iconv          disable iconv [autodetect]
 214   --enable-jni             enable JNI support [no]
 215   --enable-ladspa          enable LADSPA audio filtering [no]
 216   --enable-libass          enable libass subtitles rendering,
 217                            needed for subtitles and ass filter [no]
 218   --enable-libbluray       enable BluRay reading using libbluray [no]
 219   --enable-libbs2b         enable bs2b DSP library [no]
 220   --enable-libcaca         enable textual display using libcaca [no]
 221   --enable-libcelt         enable CELT decoding via libcelt [no]
 222   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 223   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 224                            and libraw1394 [no]
 225   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 226   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 227   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 228   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 229   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 230   --enable-libgme          enable Game Music Emu via libgme [no]
 231   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 232   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 233   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 234   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 235   --enable-libmodplug      enable ModPlug via libmodplug [no]
 236   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 237   --enable-libnut          enable NUT (de)muxing via libnut,
 238                            native (de)muxer exists [no]
 239   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 240   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 241   --enable-libopencv       enable video filtering via libopencv [no]
 242   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 243   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 244   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 245   --enable-libopus         enable Opus de/encoding via libopus [no]
 246   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 247   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 248   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 249   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 250   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 251   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 252   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 253   --enable-libsoxr         enable Include libsoxr resampling [no]
 254   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 255   --enable-libssh          enable SFTP protocol via libssh [no]
 256   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 257   --enable-libtheora       enable Theora encoding via libtheora [no]
 258   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 259   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 260   --enable-libvidstab      enable video stabilization using vid.stab [no]
 261   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 262   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 263                            native implementation exists [no]
 264   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 265   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 266   --enable-libwebp         enable WebP encoding via libwebp [no]
 267   --enable-libx264         enable H.264 encoding via x264 [no]
 268   --enable-libx265         enable HEVC encoding via x265 [no]
 269   --enable-libxavs         enable AVS encoding via xavs [no]
 270   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 271   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 272   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 273   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 274   --enable-libxvid         enable Xvid encoding via xvidcore,
 275                            native MPEG-4/Xvid encoder exists [no]
 276   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 277   --enable-libzmq          enable message passing via libzmq [no]
 278   --enable-libzvbi         enable teletext support via libzvbi [no]
 279   --disable-lzma           disable lzma [autodetect]
 280   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 281   --enable-mediacodec      enable Android MediaCodec support [no]
 282   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 283   --enable-openal          enable OpenAL 1.1 capture support [no]
 284   --enable-opencl          enable OpenCL code
 285   --enable-opengl          enable OpenGL rendering [no]
 286   --enable-openssl         enable openssl, needed for https support
 287                            if gnutls is not used [no]
 288   --disable-schannel       disable SChannel SSP, needed for TLS support on
 289                            Windows if openssl and gnutls are not used [autodetect]
 290   --disable-sdl2           disable sdl2 [autodetect]
 291   --disable-securetransport disable Secure Transport, needed for TLS support
 292                            on OSX if openssl and gnutls are not used [autodetect]
 293   --enable-x11grab         enable X11 grabbing (legacy) [no]
 294   --disable-xlib           disable xlib [autodetect]
 295   --disable-zlib           disable zlib [autodetect]
 296
 297   The following libraries provide various hardware acceleration features:
 298   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 299   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 300   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 301   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 302   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 303   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 304   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 305   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 306   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 307   --enable-omx             enable OpenMAX IL code [no]
 308   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 309   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 310   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 311   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 312   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 313
 314 Toolchain options:
 315   --arch=ARCH              select architecture [$arch]
 316   --cpu=CPU                select the minimum required CPU (affects
 317                            instruction selection, may crash on older CPUs)
 318   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 319   --progs-suffix=SUFFIX    program name suffix []
 320   --enable-cross-compile   assume a cross-compiler is used
 321   --sysroot=PATH           root of cross-build tree
 322   --sysinclude=PATH        location of cross-build system headers
 323   --target-os=OS           compiler targets OS [$target_os]
 324   --target-exec=CMD        command to run executables on target
 325   --target-path=DIR        path to view of build directory on target
 326   --target-samples=DIR     path to samples directory on target
 327   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 328   --toolchain=NAME         set tool defaults according to NAME
 329   --nm=NM                  use nm tool NM [$nm_default]
 330   --ar=AR                  use archive tool AR [$ar_default]
 331   --as=AS                  use assembler AS [$as_default]
 332   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 333   --strip=STRIP            use strip tool STRIP [$strip_default]
 334   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 335   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 336   --cc=CC                  use C compiler CC [$cc_default]
 337   --cxx=CXX                use C compiler CXX [$cxx_default]
 338   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 339   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 340   --ld=LD                  use linker LD [$ld_default]
 341   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 342   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 343   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 344   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 345   --host-cc=HOSTCC         use host C compiler HOSTCC
 346   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 347   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 348   --host-ld=HOSTLD         use host linker HOSTLD
 349   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 350   --host-libs=HLIBS        use libs HLIBS when linking for host
 351   --host-os=OS             compiler host OS [$target_os]
 352   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 353   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 354   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 355   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 356   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 357   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 358   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 359   --extra-version=STRING   version string suffix []
 360   --optflags=OPTFLAGS      override optimization-related compiler flags
 361   --build-suffix=SUFFIX    library name suffix []
 362   --enable-pic             build position-independent code
 363   --enable-thumb           compile for Thumb instruction set
 364   --enable-lto             use link-time optimization
 365   --env="ENV=override"     override the environment variables
 366
 367 Advanced options (experts only):
 368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 369   --custom-allocator=NAME  use a supported custom allocator
 370   --disable-symver         disable symbol versioning
 371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 372   --disable-safe-bitstream-reader
 373                            disable buffer boundary checking in bitreaders
 374                            (faster, but may crash)
 375   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 376   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 377
 378 Optimization options (experts only):
 379   --disable-asm            disable all assembly optimizations
 380   --disable-altivec        disable AltiVec optimizations
 381   --disable-vsx            disable VSX optimizations
 382   --disable-power8         disable POWER8 optimizations
 383   --disable-amd3dnow       disable 3DNow! optimizations
 384   --disable-amd3dnowext    disable 3DNow! extended optimizations
 385   --disable-mmx            disable MMX optimizations
 386   --disable-mmxext         disable MMXEXT optimizations
 387   --disable-sse            disable SSE optimizations
 388   --disable-sse2           disable SSE2 optimizations
 389   --disable-sse3           disable SSE3 optimizations
 390   --disable-ssse3          disable SSSE3 optimizations
 391   --disable-sse4           disable SSE4 optimizations
 392   --disable-sse42          disable SSE4.2 optimizations
 393   --disable-avx            disable AVX optimizations
 394   --disable-xop            disable XOP optimizations
 395   --disable-fma3           disable FMA3 optimizations
 396   --disable-fma4           disable FMA4 optimizations
 397   --disable-avx2           disable AVX2 optimizations
 398   --disable-aesni          disable AESNI optimizations
 399   --disable-armv5te        disable armv5te optimizations
 400   --disable-armv6          disable armv6 optimizations
 401   --disable-armv6t2        disable armv6t2 optimizations
 402   --disable-vfp            disable VFP optimizations
 403   --disable-neon           disable NEON optimizations
 404   --disable-inline-asm     disable use of inline assembly
 405   --disable-yasm           disable use of nasm/yasm assembly
 406   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 407   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 408   --disable-msa            disable MSA optimizations
 409   --disable-mipsfpu        disable floating point MIPS optimizations
 410   --disable-mmi            disable Loongson SIMD optimizations
 411   --disable-fast-unaligned consider unaligned accesses slow
 412
 413 Developer options (useful when working on FFmpeg itself):
 414   --disable-debug          disable debugging symbols
 415   --enable-debug=LEVEL     set the debug level [$debuglevel]
 416   --disable-optimizations  disable compiler optimizations
 417   --enable-extra-warnings  enable more compiler warnings
 418   --disable-stripping      disable stripping of executables and shared libraries
 419   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 420                            2 causes a slowdown at runtime.
 421   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 422   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 423                            leaks and errors, using the specified valgrind binary.
 424                            Cannot be combined with --target-exec
 425   --enable-ftrapv          Trap arithmetic overflows
 426   --samples=PATH           location of test samples for FATE, if not set use
 427                            \$FATE_SAMPLES at make invocation time.
 428   --enable-neon-clobber-test check NEON registers for clobbering (should be
 429                            used only for debugging purposes)
 430   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 431                            should be used only for debugging purposes)
 432   --enable-random          randomly enable/disable components
 433   --disable-random
 434   --enable-random=LIST     randomly enable/disable specific components or
 435   --disable-random=LIST    component groups. LIST is a comma-separated list
 436                            of NAME[:PROB] entries where NAME is a component
 437                            (group) and PROB the probability associated with
 438                            NAME (default 0.5).
 439   --random-seed=VALUE      seed value for --enable/disable-random
 440   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 441                            (only applies to --disable-optimizations builds)
 442
 443 NOTE: Object files are built at the place where configure is launched.
 444 EOF
 445   exit 0
 446 }
 447
 448 quotes='""'
 449 if test -t 1 && which tput >/dev/null 2>&1; then
 450     ncolors=$(tput colors)
 451     if test -n "$ncolors" && test $ncolors -ge 8; then
 452         bold_color=$(tput bold)
 453         warn_color=$(tput setaf 3)
 454         error_color=$(tput setaf 1)
 455         reset_color=$(tput sgr0)
 456     fi
 457     # 72 used instead of 80 since that's the default of pr
 458     ncols=$(tput cols)
 459 fi
 460 : ${ncols:=72}
 461
 462 log(){
 463     echo "$@" >> $logfile
 464 }
 465
 466 log_file(){
 467     log BEGIN $1
 468     pr -n -t $1 >> $logfile
 469     log END $1
 470 }
 471
 472 warn(){
 473     log "WARNING: $*"
 474     WARNINGS="${WARNINGS}WARNING: $*\n"
 475 }
 476
 477 die(){
 478     log "$@"
 479     echo "$error_color$bold_color$@$reset_color"
 480     cat <<EOF
 481
 482 If you think configure made a mistake, make sure you are using the latest
 483 version from Git.  If the latest version fails, report the problem to the
 484 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 485 EOF
 486     if disabled logging; then
 487         cat <<EOF
 488 Rerun configure with logging enabled (do not use --disable-logging), and
 489 include the log this produces with your report.
 490 EOF
 491     else
 492         cat <<EOF
 493 Include the log file "$logfile" produced by configure as this will help
 494 solve the problem.
 495 EOF
 496     fi
 497     exit 1
 498 }
 499
 500 # Avoid locale weirdness, besides we really just want to translate ASCII.
 501 toupper(){
 502     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 503 }
 504
 505 tolower(){
 506     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 507 }
 508
 509 c_escape(){
 510     echo "$*" | sed 's/["\\]/\\\0/g'
 511 }
 512
 513 sh_quote(){
 514     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 515     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 516     echo "$v"
 517 }
 518
 519 cleanws(){
 520     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 521 }
 522
 523 filter(){
 524     pat=$1
 525     shift
 526     for v; do
 527         eval "case $v in $pat) echo $v ;; esac"
 528     done
 529 }
 530
 531 filter_out(){
 532     pat=$1
 533     shift
 534     for v; do
 535         eval "case $v in $pat) ;; *) echo $v ;; esac"
 536     done
 537 }
 538
 539 map(){
 540     m=$1
 541     shift
 542     for v; do eval $m; done
 543 }
 544
 545 add_suffix(){
 546     suffix=$1
 547     shift
 548     for v; do echo ${v}${suffix}; done
 549 }
 550
 551 set_all(){
 552     value=$1
 553     shift
 554     for var in $*; do
 555         eval $var=$value
 556     done
 557 }
 558
 559 set_weak(){
 560     value=$1
 561     shift
 562     for var; do
 563         eval : \${$var:=$value}
 564     done
 565 }
 566
 567 sanitize_var_name(){
 568     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 569 }
 570
 571 set_safe(){
 572     var=$1
 573     shift
 574     eval $(sanitize_var_name "$var")='$*'
 575 }
 576
 577 get_safe(){
 578     eval echo \$$(sanitize_var_name "$1")
 579 }
 580
 581 pushvar(){
 582     for pvar in $*; do
 583         eval level=\${${pvar}_level:=0}
 584         eval ${pvar}_${level}="\$$pvar"
 585         eval ${pvar}_level=$(($level+1))
 586     done
 587 }
 588
 589 popvar(){
 590     for pvar in $*; do
 591         eval level=\${${pvar}_level:-0}
 592         test $level = 0 && continue
 593         eval level=$(($level-1))
 594         eval $pvar="\${${pvar}_${level}}"
 595         eval ${pvar}_level=$level
 596         eval unset ${pvar}_${level}
 597     done
 598 }
 599
 600 request(){
 601     for var in $*; do
 602         eval ${var}_requested=yes
 603         eval $var=
 604     done
 605 }
 606
 607 enable(){
 608     set_all yes $*
 609 }
 610
 611 disable(){
 612     set_all no $*
 613 }
 614
 615 enable_weak(){
 616     set_weak yes $*
 617 }
 618
 619 disable_weak(){
 620     set_weak no $*
 621 }
 622
 623 enable_safe(){
 624     for var; do
 625         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 626     done
 627 }
 628
 629 disable_safe(){
 630     for var; do
 631         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 632     done
 633 }
 634
 635 do_enable_deep(){
 636     for var; do
 637         enabled $var && continue
 638         eval sel="\$${var}_select"
 639         eval sgs="\$${var}_suggest"
 640         pushvar var sgs
 641         enable_deep $sel
 642         popvar sgs
 643         enable_deep_weak $sgs
 644         popvar var
 645     done
 646 }
 647
 648 enable_deep(){
 649     do_enable_deep $*
 650     enable $*
 651 }
 652
 653 enable_deep_weak(){
 654     for var; do
 655         disabled $var && continue
 656         pushvar var
 657         do_enable_deep $var
 658         popvar var
 659         enable_weak $var
 660     done
 661 }
 662
 663 requested(){
 664     test "${1#!}" = "$1" && op='=' || op=!=
 665     eval test "x\$${1#!}_requested" $op "xyes"
 666 }
 667
 668 enabled(){
 669     test "${1#!}" = "$1" && op='=' || op=!=
 670     eval test "x\$${1#!}" $op "xyes"
 671 }
 672
 673 disabled(){
 674     test "${1#!}" = "$1" && op='=' || op=!=
 675     eval test "x\$${1#!}" $op "xno"
 676 }
 677
 678 enabled_all(){
 679     for opt; do
 680         enabled $opt || return 1
 681     done
 682 }
 683
 684 disabled_all(){
 685     for opt; do
 686         disabled $opt || return 1
 687     done
 688 }
 689
 690 enabled_any(){
 691     for opt; do
 692         enabled $opt && return 0
 693     done
 694 }
 695
 696 disabled_any(){
 697     for opt; do
 698         disabled $opt && return 0
 699     done
 700     return 1
 701 }
 702
 703 set_default(){
 704     for opt; do
 705         eval : \${$opt:=\$${opt}_default}
 706     done
 707 }
 708
 709 is_in(){
 710     value=$1
 711     shift
 712     for var in $*; do
 713         [ $var = $value ] && return 0
 714     done
 715     return 1
 716 }
 717
 718 do_check_deps(){
 719     for cfg; do
 720         cfg="${cfg#!}"
 721         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 722         disabled ${cfg}_checking && continue
 723         enable ${cfg}_checking
 724         append allopts $cfg
 725
 726         eval dep_all="\$${cfg}_deps"
 727         eval dep_any="\$${cfg}_deps_any"
 728         eval dep_sel="\$${cfg}_select"
 729         eval dep_sgs="\$${cfg}_suggest"
 730         eval dep_ifa="\$${cfg}_if"
 731         eval dep_ifn="\$${cfg}_if_any"
 732
 733         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 734         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 735         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 736
 737         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 738         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 739         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 740         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 741         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 742
 743         if enabled $cfg; then
 744             enable_deep $dep_sel
 745             enable_deep_weak $dep_sgs
 746         fi
 747
 748         disable ${cfg}_checking
 749     done
 750 }
 751
 752 check_deps(){
 753     unset allopts
 754
 755     do_check_deps "$@"
 756
 757     for cfg in $allopts; do
 758         enabled $cfg || continue
 759         eval dep_extralibs="\$${cfg}_extralibs"
 760         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 761     done
 762 }
 763
 764 print_config(){
 765     pfx=$1
 766     files=$2
 767     shift 2
 768     map 'eval echo "$v \${$v:-no}"' "$@" |
 769     awk "BEGIN { split(\"$files\", files) }
 770         {
 771             c = \"$pfx\" toupper(\$1);
 772             v = \$2;
 773             sub(/yes/, 1, v);
 774             sub(/no/,  0, v);
 775             for (f in files) {
 776                 file = files[f];
 777                 if (file ~ /\\.h\$/) {
 778                     printf(\"#define %s %d\\n\", c, v) >>file;
 779                 } else if (file ~ /\\.asm\$/) {
 780                     printf(\"%%define %s %d\\n\", c, v) >>file;
 781                 } else if (file ~ /\\.mak\$/) {
 782                     n = -v ? \"\" : \"!\";
 783                     printf(\"%s%s=yes\\n\", n, c) >>file;
 784                 } else if (file ~ /\\.texi\$/) {
 785                     pre = -v ? \"\" : \"@c \";
 786                     yesno = \$2;
 787                     c2 = tolower(c);
 788                     gsub(/_/, \"-\", c2);
 789                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 790                 }
 791             }
 792         }"
 793 }
 794
 795 print_enabled(){
 796     suf=$1
 797     shift
 798     for v; do
 799         enabled $v && printf "%s\n" ${v%$suf}
 800     done
 801 }
 802
 803 append(){
 804     var=$1
 805     shift
 806     eval "$var=\"\$$var $*\""
 807 }
 808
 809 prepend(){
 810     var=$1
 811     shift
 812     eval "$var=\"$* \$$var\""
 813 }
 814
 815 unique(){
 816     var=$1
 817     uniq_list=""
 818     for tok in $(eval echo \$$var); do
 819         uniq_list="$(filter_out $tok $uniq_list) $tok"
 820     done
 821     eval "$var=\"${uniq_list}\""
 822 }
 823
 824 add_cppflags(){
 825     append CPPFLAGS "$@"
 826 }
 827
 828 add_cflags(){
 829     append CFLAGS $($cflags_filter "$@")
 830 }
 831
 832 add_cxxflags(){
 833     append CXXFLAGS $($cflags_filter "$@")
 834 }
 835
 836 add_asflags(){
 837     append ASFLAGS $($asflags_filter "$@")
 838 }
 839
 840 add_objcflags(){
 841     append OBJCFLAGS $($objcflags_filter "$@")
 842 }
 843
 844 add_ldflags(){
 845     append LDFLAGS $($ldflags_filter "$@")
 846 }
 847
 848 add_ldexeflags(){
 849     append LDEXEFLAGS $($ldflags_filter "$@")
 850 }
 851
 852 add_ldlibflags(){
 853     append LDLIBFLAGS $($ldflags_filter "$@")
 854 }
 855
 856 add_stripflags(){
 857     append ASMSTRIPFLAGS "$@"
 858 }
 859
 860 add_extralibs(){
 861     prepend extralibs $($ldflags_filter "$@")
 862 }
 863
 864 add_host_cppflags(){
 865     append host_cppflags "$@"
 866 }
 867
 868 add_host_cflags(){
 869     append host_cflags $($host_cflags_filter "$@")
 870 }
 871
 872 add_host_ldflags(){
 873     append host_ldflags $($host_ldflags_filter "$@")
 874 }
 875
 876 add_compat(){
 877     append compat_objs $1
 878     shift
 879     map 'add_cppflags -D$v' "$@"
 880 }
 881
 882 check_cmd(){
 883     log "$@"
 884     "$@" >> $logfile 2>&1
 885 }
 886
 887 check_stat(){
 888     log check_stat "$@"
 889     stat "$1" >> $logfile 2>&1
 890 }
 891
 892 cc_o(){
 893     eval printf '%s\\n' $CC_O
 894 }
 895
 896 cc_e(){
 897     eval printf '%s\\n' $CC_E
 898 }
 899
 900 check_cc(){
 901     log check_cc "$@"
 902     cat > $TMPC
 903     log_file $TMPC
 904     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 905 }
 906
 907 check_cxx(){
 908     log check_cxx "$@"
 909     cat > $TMPCPP
 910     log_file $TMPCPP
 911     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 912 }
 913
 914 check_objcc(){
 915     log check_objcc "$@"
 916     cat > $TMPM
 917     log_file $TMPM
 918     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 919 }
 920
 921 check_cpp(){
 922     log check_cpp "$@"
 923     cat > $TMPC
 924     log_file $TMPC
 925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 926 }
 927
 928 as_o(){
 929     eval printf '%s\\n' $AS_O
 930 }
 931
 932 check_as(){
 933     log check_as "$@"
 934     cat > $TMPS
 935     log_file $TMPS
 936     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 937 }
 938
 939 check_inline_asm(){
 940     log check_inline_asm "$@"
 941     name="$1"
 942     code="$2"
 943     shift 2
 944     disable $name
 945     check_cc "$@" <<EOF && enable $name
 946 void foo(void){ __asm__ volatile($code); }
 947 EOF
 948 }
 949
 950 check_inline_asm_flags(){
 951     log check_inline_asm_flags "$@"
 952     name="$1"
 953     code="$2"
 954     flags=''
 955     shift 2
 956     while [ "$1" != "" ]; do
 957       append flags $1
 958       shift
 959     done;
 960     disable $name
 961     cat > $TMPC <<EOF
 962 void foo(void){ __asm__ volatile($code); }
 963 EOF
 964     log_file $TMPC
 965     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 966     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 967 }
 968
 969 check_insn(){
 970     log check_insn "$@"
 971     check_inline_asm ${1}_inline "\"$2\""
 972     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 973 }
 974
 975 check_yasm(){
 976     log check_yasm "$@"
 977     echo "$1" > $TMPS
 978     log_file $TMPS
 979     shift 1
 980     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 981 }
 982
 983 ld_o(){
 984     eval printf '%s\\n' $LD_O
 985 }
 986
 987 check_ld(){
 988     log check_ld "$@"
 989     type=$1
 990     shift 1
 991     flags=$(filter_out '-l*|*.so' $@)
 992     libs=$(filter '-l*|*.so' $@)
 993     check_$type $($cflags_filter $flags) || return
 994     flags=$($ldflags_filter $flags)
 995     libs=$($ldflags_filter $libs)
 996     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 997 }
 998
 999 print_include(){
1000     hdr=$1
1001     test "${hdr%.h}" = "${hdr}" &&
1002         echo "#include $hdr"    ||
1003         echo "#include <$hdr>"
1004 }
1005
1006 check_code(){
1007     log check_code "$@"
1008     check=$1
1009     headers=$2
1010     code=$3
1011     shift 3
1012     {
1013         for hdr in $headers; do
1014             print_include $hdr
1015         done
1016         echo "int main(void) { $code; return 0; }"
1017     } | check_$check "$@"
1018 }
1019
1020 check_cppflags(){
1021     log check_cppflags "$@"
1022     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1023 int x;
1024 EOF
1025 }
1026
1027 test_cflags(){
1028     log test_cflags "$@"
1029     set -- $($cflags_filter "$@")
1030     check_cc "$@" <<EOF
1031 int x;
1032 EOF
1033 }
1034
1035 check_cflags(){
1036     log check_cflags "$@"
1037     test_cflags "$@" && add_cflags "$@"
1038 }
1039
1040 check_cxxflags(){
1041     log check_cxxflags "$@"
1042     set -- $($cflags_filter "$@")
1043     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1044 int x;
1045 EOF
1046 }
1047
1048 test_objcflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_objcc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_objcflags(){
1057     log check_cflags "$@"
1058     test_objcflags "$@" && add_objcflags "$@"
1059 }
1060
1061 test_ldflags(){
1062     log test_ldflags "$@"
1063     check_ld "cc" "$@" <<EOF
1064 int main(void){ return 0; }
1065 EOF
1066 }
1067
1068 check_ldflags(){
1069     log check_ldflags "$@"
1070     test_ldflags "$@" && add_ldflags "$@"
1071 }
1072
1073 test_stripflags(){
1074     log test_stripflags "$@"
1075     # call check_cc to get a fresh TMPO
1076     check_cc <<EOF
1077 int main(void) { return 0; }
1078 EOF
1079     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1080 }
1081
1082 check_stripflags(){
1083     log check_stripflags "$@"
1084     test_stripflags "$@" && add_stripflags "$@"
1085 }
1086
1087 check_header(){
1088     log check_header "$@"
1089     header=$1
1090     shift
1091     disable_safe $header
1092     check_cpp "$@" <<EOF && enable_safe $header
1093 #include <$header>
1094 int x;
1095 EOF
1096 }
1097
1098 check_header_objcc(){
1099     log check_header_objcc "$@"
1100     rm -f -- "$TMPO"
1101     header=$1
1102     shift
1103     disable_safe $header
1104     {
1105        echo "#include <$header>"
1106        echo "int main(void) { return 0; }"
1107     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1108 }
1109
1110 check_func(){
1111     log check_func "$@"
1112     func=$1
1113     shift
1114     disable $func
1115     check_ld "cc" "$@" <<EOF && enable $func
1116 extern int $func();
1117 int main(void){ $func(); }
1118 EOF
1119 }
1120
1121 check_complexfunc(){
1122     log check_complexfunc "$@"
1123     func=$1
1124     narg=$2
1125     shift 2
1126     test $narg = 2 && args="f, g" || args="f * I"
1127     disable $func
1128     check_ld "cc" "$@" <<EOF && enable $func
1129 #include <complex.h>
1130 #include <math.h>
1131 float foo(complex float f, complex float g) { return $func($args); }
1132 int main(void){ return (int) foo; }
1133 EOF
1134 }
1135
1136 check_mathfunc(){
1137     log check_mathfunc "$@"
1138     func=$1
1139     narg=$2
1140     shift 2
1141     test $narg = 2 && args="f, g" || args="f"
1142     disable $func
1143     check_ld "cc" "$@" <<EOF && enable $func
1144 #include <math.h>
1145 float foo(float f, float g) { return $func($args); }
1146 int main(void){ return (int) foo; }
1147 EOF
1148 }
1149
1150 check_func_headers(){
1151     log check_func_headers "$@"
1152     headers=$1
1153     funcs=$2
1154     shift 2
1155     {
1156         for hdr in $headers; do
1157             print_include $hdr
1158         done
1159         echo "#include <stdint.h>"
1160         for func in $funcs; do
1161             echo "long check_$func(void) { return (long) $func; }"
1162         done
1163         echo "int main(void) { int ret = 0;"
1164         # LTO could optimize out the test functions without this
1165         for func in $funcs; do
1166             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1167         done
1168         echo "return ret; }"
1169     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1170 }
1171
1172 check_class_headers_cpp(){
1173     log check_class_headers_cpp "$@"
1174     headers=$1
1175     classes=$2
1176     shift 2
1177     {
1178         for hdr in $headers; do
1179             echo "#include <$hdr>"
1180         done
1181         echo "int main(void) { "
1182         i=1
1183         for class in $classes; do
1184             echo "$class obj$i;"
1185             i=$(expr $i + 1)
1186         done
1187         echo "return 0; }"
1188     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1189 }
1190
1191 check_cpp_condition(){
1192     log check_cpp_condition "$@"
1193     header=$1
1194     condition=$2
1195     shift 2
1196     check_cpp "$@" <<EOF
1197 #include <$header>
1198 #if !($condition)
1199 #error "unsatisfied condition: $condition"
1200 #endif
1201 EOF
1202 }
1203
1204 test_cflags_cpp(){
1205     log test_cflags_cpp "$@"
1206     flags=$1
1207     condition=$2
1208     shift 2
1209     set -- $($cflags_filter "$flags")
1210     check_cpp "$@" <<EOF
1211 #if !($condition)
1212 #error "unsatisfied condition: $condition"
1213 #endif
1214 EOF
1215 }
1216
1217 check_lib(){
1218     log check_lib "$@"
1219     header="$1"
1220     func="$2"
1221     shift 2
1222     check_header $header && check_func $func "$@" && add_extralibs "$@"
1223 }
1224
1225 check_lib2(){
1226     log check_lib2 "$@"
1227     headers="$1"
1228     funcs="$2"
1229     shift 2
1230     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1231 }
1232
1233 check_lib_cpp(){
1234     log check_lib_cpp "$@"
1235     headers="$1"
1236     classes="$2"
1237     shift 2
1238     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1239 }
1240
1241 check_pkg_config(){
1242     log check_pkg_config "$@"
1243     pkgandversion="$1"
1244     pkg="${1%% *}"
1245     headers="$2"
1246     funcs="$3"
1247     shift 3
1248     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1249     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1250     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1251     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1252         set_safe "${pkg}_cflags" $pkg_cflags   &&
1253         set_safe "${pkg}_libs"   $pkg_libs
1254 }
1255
1256 check_exec(){
1257     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1258 }
1259
1260 check_exec_crash(){
1261     code=$(cat)
1262
1263     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1264     # are safe but may not be available everywhere.  Thus we use
1265     # raise(SIGTERM) instead.  The check is run in a subshell so we
1266     # can redirect the "Terminated" message from the shell.  SIGBUS
1267     # is not defined by standard C so it is used conditionally.
1268
1269     (check_exec "$@") >> $logfile 2>&1 <<EOF
1270 #include <signal.h>
1271 static void sighandler(int sig){
1272     raise(SIGTERM);
1273 }
1274 int foo(void){
1275     $code
1276 }
1277 int (*func_ptr)(void) = foo;
1278 int main(void){
1279     signal(SIGILL, sighandler);
1280     signal(SIGFPE, sighandler);
1281     signal(SIGSEGV, sighandler);
1282 #ifdef SIGBUS
1283     signal(SIGBUS, sighandler);
1284 #endif
1285     return func_ptr();
1286 }
1287 EOF
1288 }
1289
1290 check_type(){
1291     log check_type "$@"
1292     headers=$1
1293     type=$2
1294     shift 2
1295     disable_safe "$type"
1296     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1297 }
1298
1299 check_struct(){
1300     log check_struct "$@"
1301     headers=$1
1302     struct=$2
1303     member=$3
1304     shift 3
1305     disable_safe "${struct}_${member}"
1306     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1307         enable_safe "${struct}_${member}"
1308 }
1309
1310 check_builtin(){
1311     log check_builtin "$@"
1312     name=$1
1313     headers=$2
1314     builtin=$3
1315     shift 3
1316     disable "$name"
1317     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1318 }
1319
1320 check_compile_assert(){
1321     log check_compile_assert "$@"
1322     name=$1
1323     headers=$2
1324     condition=$3
1325     shift 3
1326     disable "$name"
1327     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1328 }
1329
1330 require(){
1331     name="$1"
1332     header="$2"
1333     func="$3"
1334     shift 3
1335     check_lib $header $func "$@" || die "ERROR: $name not found"
1336 }
1337
1338 require2(){
1339     name="$1"
1340     headers="$2"
1341     func="$3"
1342     shift 3
1343     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1344 }
1345
1346 require_cpp(){
1347     name="$1"
1348     headers="$2"
1349     classes="$3"
1350     shift 3
1351     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1352 }
1353
1354 use_pkg_config(){
1355     pkg="$1"
1356     check_pkg_config "$@" || return 1
1357     add_cflags    $(get_safe "${pkg}_cflags")
1358     add_extralibs $(get_safe "${pkg}_libs")
1359 }
1360
1361 require_pkg_config(){
1362     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1363 }
1364
1365 require_libfreetype(){
1366     log require_libfreetype "$@"
1367     pkg="freetype2"
1368     check_cmd $pkg_config --exists --print-errors $pkg \
1369       || die "ERROR: $pkg not found"
1370     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1371     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1372     {
1373         echo "#include <ft2build.h>"
1374         echo "#include FT_FREETYPE_H"
1375         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1376         echo "int main(void) { return 0; }"
1377     } | check_ld "cc" $pkg_cflags $pkg_libs \
1378       && set_safe "${pkg}_cflags" $pkg_cflags \
1379       && set_safe "${pkg}_libs"   $pkg_libs \
1380       || die "ERROR: $pkg not found"
1381     add_cflags    $(get_safe "${pkg}_cflags")
1382     add_extralibs $(get_safe "${pkg}_libs")
1383 }
1384
1385 hostcc_e(){
1386     eval printf '%s\\n' $HOSTCC_E
1387 }
1388
1389 hostcc_o(){
1390     eval printf '%s\\n' $HOSTCC_O
1391 }
1392
1393 check_host_cc(){
1394     log check_host_cc "$@"
1395     cat > $TMPC
1396     log_file $TMPC
1397     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1398 }
1399
1400 check_host_cpp(){
1401     log check_host_cpp "$@"
1402     cat > $TMPC
1403     log_file $TMPC
1404     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1405 }
1406
1407 check_host_cppflags(){
1408     log check_host_cppflags "$@"
1409     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1410 int x;
1411 EOF
1412 }
1413
1414 check_host_cflags(){
1415     log check_host_cflags "$@"
1416     set -- $($host_cflags_filter "$@")
1417     check_host_cc "$@" <<EOF && append host_cflags "$@"
1418 int x;
1419 EOF
1420 }
1421
1422 check_host_cpp_condition(){
1423     log check_host_cpp_condition "$@"
1424     header=$1
1425     condition=$2
1426     shift 2
1427     check_host_cpp "$@" <<EOF
1428 #include <$header>
1429 #if !($condition)
1430 #error "unsatisfied condition: $condition"
1431 #endif
1432 EOF
1433 }
1434
1435 cp_if_changed(){
1436     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1437     mkdir -p "$(dirname $2)"
1438     $cp_f "$1" "$2"
1439 }
1440
1441 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1442 # system-dependent things.
1443
1444 AVCODEC_COMPONENTS="
1445     bsfs
1446     decoders
1447     encoders
1448     hwaccels
1449     parsers
1450 "
1451
1452 AVDEVICE_COMPONENTS="
1453     indevs
1454     outdevs
1455 "
1456 AVFILTER_COMPONENTS="
1457     filters
1458 "
1459 AVFORMAT_COMPONENTS="
1460     demuxers
1461     muxers
1462     protocols
1463 "
1464
1465 AVRESAMPLE_COMPONENTS=""
1466 AVUTIL_COMPONENTS=""
1467
1468 COMPONENT_LIST="
1469     $AVCODEC_COMPONENTS
1470     $AVDEVICE_COMPONENTS
1471     $AVFILTER_COMPONENTS
1472     $AVFORMAT_COMPONENTS
1473     $AVRESAMPLE_COMPONENTS
1474     $AVUTIL_COMPONENTS
1475 "
1476
1477 EXAMPLE_LIST="
1478     avio_dir_cmd_example
1479     avio_reading_example
1480     decoding_encoding_example
1481     demuxing_decoding_example
1482     extract_mvs_example
1483     filter_audio_example
1484     filtering_audio_example
1485     filtering_video_example
1486     http_multiclient_example
1487     metadata_example
1488     muxing_example
1489     qsvdec_example
1490     remuxing_example
1491     resampling_audio_example
1492     scaling_video_example
1493     transcode_aac_example
1494     transcoding_example
1495 "
1496 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1497     bzlib
1498     iconv
1499     libxcb
1500     libxcb_shm
1501     libxcb_shape
1502     libxcb_xfixes
1503     lzma
1504     schannel
1505     sdl
1506     sdl2
1507     securetransport
1508     xlib
1509     zlib
1510 "
1511
1512 EXTERNAL_LIBRARY_LIST="
1513     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1514     avisynth
1515     chromaprint
1516     crystalhd
1517     decklink
1518     frei0r
1519     gcrypt
1520     gmp
1521     gnutls
1522     jni
1523     ladspa
1524     libass
1525     libbluray
1526     libbs2b
1527     libcaca
1528     libcdio
1529     libcelt
1530     libdc1394
1531     libfdk_aac
1532     libflite
1533     libfontconfig
1534     libfreetype
1535     libfribidi
1536     libgme
1537     libgsm
1538     libiec61883
1539     libilbc
1540     libkvazaar
1541     libmodplug
1542     libmp3lame
1543     libnut
1544     libopencore_amrnb
1545     libopencore_amrwb
1546     libopencv
1547     libopenh264
1548     libopenjpeg
1549     libopenmpt
1550     libopus
1551     libpulse
1552     librtmp
1553     librubberband
1554     libschroedinger
1555     libshine
1556     libsmbclient
1557     libsnappy
1558     libsoxr
1559     libspeex
1560     libssh
1561     libtesseract
1562     libtheora
1563     libtwolame
1564     libv4l2
1565     libvidstab
1566     libvo_amrwbenc
1567     libvorbis
1568     libvpx
1569     libwavpack
1570     libwebp
1571     libx264
1572     libx265
1573     libxavs
1574     libxvid
1575     libzimg
1576     libzmq
1577     libzvbi
1578     mediacodec
1579     netcdf
1580     openal
1581     opencl
1582     opengl
1583     openssl
1584     videotoolbox
1585     x11grab
1586 "
1587 HWACCEL_AUTODETECT_LIBRARY_LIST="
1588     audiotoolbox
1589     cuda
1590     cuvid
1591     d3d11va
1592     dxva2
1593     nvenc
1594     vaapi
1595     vda
1596     vdpau
1597     videotoolbox_hwaccel
1598     xvmc
1599 "
1600
1601 HWACCEL_LIBRARY_LIST="
1602     $HWACCEL_AUTODETECT_LIBRARY_LIST
1603     libmfx
1604     libnpp
1605     mmal
1606     omx
1607 "
1608
1609 DOCUMENT_LIST="
1610     doc
1611     htmlpages
1612     manpages
1613     podpages
1614     txtpages
1615 "
1616
1617 FEATURE_LIST="
1618     ftrapv
1619     gray
1620     hardcoded_tables
1621     omx_rpi
1622     runtime_cpudetect
1623     safe_bitstream_reader
1624     shared
1625     small
1626     static
1627     swscale_alpha
1628 "
1629
1630 LIBRARY_LIST="
1631     avcodec
1632     avdevice
1633     avfilter
1634     avformat
1635     avresample
1636     avutil
1637     postproc
1638     swresample
1639     swscale
1640 "
1641
1642 LICENSE_LIST="
1643     gpl
1644     nonfree
1645     version3
1646 "
1647
1648 PROGRAM_LIST="
1649     ffplay
1650     ffprobe
1651     ffserver
1652     ffmpeg
1653 "
1654
1655 SUBSYSTEM_LIST="
1656     dct
1657     dwt
1658     error_resilience
1659     faan
1660     fast_unaligned
1661     fft
1662     lsp
1663     lzo
1664     mdct
1665     pixelutils
1666     network
1667     rdft
1668 "
1669
1670 CONFIG_LIST="
1671     $COMPONENT_LIST
1672     $DOCUMENT_LIST
1673     $EXAMPLE_LIST
1674     $EXTERNAL_LIBRARY_LIST
1675     $HWACCEL_LIBRARY_LIST
1676     $FEATURE_LIST
1677     $LICENSE_LIST
1678     $LIBRARY_LIST
1679     $PROGRAM_LIST
1680     $SUBSYSTEM_LIST
1681     fontconfig
1682     memalign_hack
1683     memory_poisoning
1684     neon_clobber_test
1685     pic
1686     pod2man
1687     raise_major
1688     thumb
1689     valgrind_backtrace
1690     xmm_clobber_test
1691 "
1692
1693 THREADS_LIST="
1694     pthreads
1695     os2threads
1696     w32threads
1697 "
1698
1699 ATOMICS_LIST="
1700     atomics_gcc
1701     atomics_suncc
1702     atomics_win32
1703 "
1704
1705 AUTODETECT_LIBS="
1706     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1707     $HWACCEL_AUTODETECT_LIBRARY_LIST
1708     $THREADS_LIST
1709 "
1710
1711 ARCH_LIST="
1712     aarch64
1713     alpha
1714     arm
1715     avr32
1716     avr32_ap
1717     avr32_uc
1718     bfin
1719     ia64
1720     m68k
1721     mips
1722     mips64
1723     parisc
1724     ppc
1725     ppc64
1726     s390
1727     sh4
1728     sparc
1729     sparc64
1730     tilegx
1731     tilepro
1732     tomi
1733     x86
1734     x86_32
1735     x86_64
1736 "
1737
1738 ARCH_EXT_LIST_ARM="
1739     armv5te
1740     armv6
1741     armv6t2
1742     armv8
1743     neon
1744     vfp
1745     vfpv3
1746     setend
1747 "
1748
1749 ARCH_EXT_LIST_MIPS="
1750     mipsfpu
1751     mips32r2
1752     mips32r5
1753     mips64r2
1754     mips32r6
1755     mips64r6
1756     mipsdsp
1757     mipsdspr2
1758     msa
1759 "
1760
1761 ARCH_EXT_LIST_LOONGSON="
1762     loongson2
1763     loongson3
1764     mmi
1765 "
1766
1767 ARCH_EXT_LIST_X86_SIMD="
1768     aesni
1769     amd3dnow
1770     amd3dnowext
1771     avx
1772     avx2
1773     fma3
1774     fma4
1775     mmx
1776     mmxext
1777     sse
1778     sse2
1779     sse3
1780     sse4
1781     sse42
1782     ssse3
1783     xop
1784 "
1785
1786 ARCH_EXT_LIST_PPC="
1787     altivec
1788     dcbzl
1789     ldbrx
1790     power8
1791     ppc4xx
1792     vsx
1793 "
1794
1795 ARCH_EXT_LIST_X86="
1796     $ARCH_EXT_LIST_X86_SIMD
1797     cpunop
1798     i686
1799 "
1800
1801 ARCH_EXT_LIST="
1802     $ARCH_EXT_LIST_ARM
1803     $ARCH_EXT_LIST_PPC
1804     $ARCH_EXT_LIST_X86
1805     $ARCH_EXT_LIST_MIPS
1806     $ARCH_EXT_LIST_LOONGSON
1807 "
1808
1809 ARCH_FEATURES="
1810     aligned_stack
1811     fast_64bit
1812     fast_clz
1813     fast_cmov
1814     local_aligned_8
1815     local_aligned_16
1816     local_aligned_32
1817     simd_align_16
1818 "
1819
1820 BUILTIN_LIST="
1821     atomic_cas_ptr
1822     atomic_compare_exchange
1823     machine_rw_barrier
1824     MemoryBarrier
1825     mm_empty
1826     rdtsc
1827     sarestart
1828     sem_timedwait
1829     sync_val_compare_and_swap
1830 "
1831 HAVE_LIST_CMDLINE="
1832     inline_asm
1833     symver
1834     yasm
1835 "
1836
1837 HAVE_LIST_PUB="
1838     bigendian
1839     fast_unaligned
1840 "
1841
1842 HEADERS_LIST="
1843     alsa_asoundlib_h
1844     altivec_h
1845     arpa_inet_h
1846     asm_types_h
1847     cdio_paranoia_h
1848     cdio_paranoia_paranoia_h
1849     cuda_h
1850     dispatch_dispatch_h
1851     dev_bktr_ioctl_bt848_h
1852     dev_bktr_ioctl_meteor_h
1853     dev_ic_bt8xx_h
1854     dev_video_bktr_ioctl_bt848_h
1855     dev_video_meteor_ioctl_meteor_h
1856     direct_h
1857     dirent_h
1858     dlfcn_h
1859     d3d11_h
1860     dxva_h
1861     ES2_gl_h
1862     gsm_h
1863     io_h
1864     mach_mach_time_h
1865     machine_ioctl_bt848_h
1866     machine_ioctl_meteor_h
1867     malloc_h
1868     opencv2_core_core_c_h
1869     openjpeg_2_1_openjpeg_h
1870     openjpeg_2_0_openjpeg_h
1871     openjpeg_1_5_openjpeg_h
1872     OpenGL_gl3_h
1873     poll_h
1874     sndio_h
1875     soundcard_h
1876     stdatomic_h
1877     sys_mman_h
1878     sys_param_h
1879     sys_resource_h
1880     sys_select_h
1881     sys_soundcard_h
1882     sys_time_h
1883     sys_un_h
1884     sys_videoio_h
1885     termios_h
1886     udplite_h
1887     unistd_h
1888     valgrind_valgrind_h
1889     windows_h
1890     winsock2_h
1891 "
1892
1893 INTRINSICS_LIST="
1894     intrinsics_neon
1895 "
1896
1897 COMPLEX_FUNCS="
1898     cabs
1899     cexp
1900 "
1901
1902 MATH_FUNCS="
1903     atanf
1904     atan2f
1905     cbrt
1906     cbrtf
1907     copysign
1908     cosf
1909     erf
1910     exp2
1911     exp2f
1912     expf
1913     hypot
1914     isfinite
1915     isinf
1916     isnan
1917     ldexpf
1918     llrint
1919     llrintf
1920     log2
1921     log2f
1922     log10f
1923     lrint
1924     lrintf
1925     powf
1926     rint
1927     round
1928     roundf
1929     sinf
1930     trunc
1931     truncf
1932 "
1933
1934 SYSTEM_FUNCS="
1935     access
1936     aligned_malloc
1937     arc4random
1938     clock_gettime
1939     closesocket
1940     CommandLineToArgvW
1941     CoTaskMemFree
1942     CryptGenRandom
1943     dlopen
1944     fcntl
1945     flt_lim
1946     fork
1947     getaddrinfo
1948     gethrtime
1949     getopt
1950     GetProcessAffinityMask
1951     GetProcessMemoryInfo
1952     GetProcessTimes
1953     getrusage
1954     GetSystemTimeAsFileTime
1955     gettimeofday
1956     glob
1957     glXGetProcAddress
1958     gmtime_r
1959     inet_aton
1960     isatty
1961     jack_port_get_latency_range
1962     kbhit
1963     LoadLibrary
1964     localtime_r
1965     lstat
1966     lzo1x_999_compress
1967     mach_absolute_time
1968     MapViewOfFile
1969     memalign
1970     mkstemp
1971     mmap
1972     mprotect
1973     nanosleep
1974     PeekNamedPipe
1975     posix_memalign
1976     pthread_cancel
1977     sched_getaffinity
1978     SetConsoleTextAttribute
1979     SetConsoleCtrlHandler
1980     setmode
1981     setrlimit
1982     Sleep
1983     strerror_r
1984     sysconf
1985     sysctl
1986     usleep
1987     UTGetOSTypeFromString
1988     VirtualAlloc
1989     wglGetProcAddress
1990 "
1991
1992 TOOLCHAIN_FEATURES="
1993     as_dn_directive
1994     as_func
1995     as_object_arch
1996     asm_mod_q
1997     attribute_may_alias
1998     attribute_packed
1999     ebp_available
2000     ebx_available
2001     gnu_as
2002     gnu_windres
2003     ibm_asm
2004     inline_asm_direct_symbol_refs
2005     inline_asm_labels
2006     inline_asm_nonlocal_labels
2007     pragma_deprecated
2008     rsync_contimeout
2009     symver_asm_label
2010     symver_gnu_asm
2011     vfp_args
2012     xform_asm
2013     xmm_clobbers
2014 "
2015
2016 TYPES_LIST="
2017     CONDITION_VARIABLE_Ptr
2018     socklen_t
2019     struct_addrinfo
2020     struct_group_source_req
2021     struct_ip_mreq_source
2022     struct_ipv6_mreq
2023     struct_msghdr_msg_flags
2024     struct_pollfd
2025     struct_rusage_ru_maxrss
2026     struct_sctp_event_subscribe
2027     struct_sockaddr_in6
2028     struct_sockaddr_sa_len
2029     struct_sockaddr_storage
2030     struct_stat_st_mtim_tv_nsec
2031     struct_v4l2_frmivalenum_discrete
2032 "
2033
2034 HAVE_LIST="
2035     $ARCH_EXT_LIST
2036     $(add_suffix _external $ARCH_EXT_LIST)
2037     $(add_suffix _inline   $ARCH_EXT_LIST)
2038     $ARCH_FEATURES
2039     $ATOMICS_LIST
2040     $BUILTIN_LIST
2041     $COMPLEX_FUNCS
2042     $HAVE_LIST_CMDLINE
2043     $HAVE_LIST_PUB
2044     $HEADERS_LIST
2045     $INTRINSICS_LIST
2046     $MATH_FUNCS
2047     $SYSTEM_FUNCS
2048     $THREADS_LIST
2049     $TOOLCHAIN_FEATURES
2050     $TYPES_LIST
2051     atomics_native
2052     dos_paths
2053     dxva2_lib
2054     dxva2api_cobj
2055     libc_msvcrt
2056     libdc1394_1
2057     libdc1394_2
2058     makeinfo
2059     makeinfo_html
2060     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2061     perl
2062     pod2man
2063     sdl2
2064     section_data_rel_ro
2065     texi2html
2066     threads
2067     vaapi_drm
2068     vaapi_x11
2069     vdpau_x11
2070     winrt
2071     xlib
2072 "
2073
2074 # options emitted with CONFIG_ prefix but not available on the command line
2075 CONFIG_EXTRA="
2076     aandcttables
2077     ac3dsp
2078     audio_frame_queue
2079     audiodsp
2080     blockdsp
2081     bswapdsp
2082     cabac
2083     dirac_parse
2084     dvprofile
2085     exif
2086     faandct
2087     faanidct
2088     fdctdsp
2089     flacdsp
2090     fmtconvert
2091     frame_thread_encoder
2092     g722dsp
2093     golomb
2094     gplv3
2095     h263dsp
2096     h264chroma
2097     h264dsp
2098     h264parse
2099     h264pred
2100     h264qpel
2101     hpeldsp
2102     huffman
2103     huffyuvdsp
2104     huffyuvencdsp
2105     idctdsp
2106     iirfilter
2107     imdct15
2108     intrax8
2109     iso_media
2110     ividsp
2111     jpegtables
2112     lgplv3
2113     libx262
2114     llauddsp
2115     llviddsp
2116     lpc
2117     lzf
2118     me_cmp
2119     mpeg_er
2120     mpegaudio
2121     mpegaudiodsp
2122     mpegvideo
2123     mpegvideoenc
2124     mss34dsp
2125     pixblockdsp
2126     qpeldsp
2127     qsv
2128     qsvdec
2129     qsvenc
2130     rangecoder
2131     riffdec
2132     riffenc
2133     rtpdec
2134     rtpenc_chain
2135     rv34dsp
2136     sinewin
2137     snappy
2138     srtp
2139     startcode
2140     texturedsp
2141     texturedspenc
2142     tpeldsp
2143     vaapi_encode
2144     vc1dsp
2145     videodsp
2146     vp3dsp
2147     vp56dsp
2148     vp8dsp
2149     vt_bt2020
2150     wma_freqs
2151     wmv2dsp
2152 "
2153
2154 CMDLINE_SELECT="
2155     $ARCH_EXT_LIST
2156     $CONFIG_LIST
2157     $HAVE_LIST_CMDLINE
2158     $THREADS_LIST
2159     asm
2160     cross_compile
2161     debug
2162     extra_warnings
2163     logging
2164     lto
2165     optimizations
2166     rpath
2167     stripping
2168 "
2169
2170 PATHS_LIST="
2171     bindir
2172     datadir
2173     docdir
2174     incdir
2175     libdir
2176     mandir
2177     pkgconfigdir
2178     prefix
2179     shlibdir
2180     install_name_dir
2181 "
2182
2183 CMDLINE_SET="
2184     $PATHS_LIST
2185     ar
2186     arch
2187     as
2188     assert_level
2189     build_suffix
2190     cc
2191     objcc
2192     cpu
2193     cross_prefix
2194     custom_allocator
2195     cxx
2196     dep_cc
2197     doxygen
2198     env
2199     extra_version
2200     gas
2201     host_cc
2202     host_cflags
2203     host_ld
2204     host_ldflags
2205     host_libs
2206     host_os
2207     install
2208     ld
2209     ln_s
2210     logfile
2211     malloc_prefix
2212     nm
2213     optflags
2214     pkg_config
2215     pkg_config_flags
2216     progs_suffix
2217     random_seed
2218     ranlib
2219     samples
2220     strip
2221     sws_max_filter_size
2222     sysinclude
2223     sysroot
2224     target_exec
2225     target_os
2226     target_path
2227     target_samples
2228     tempprefix
2229     toolchain
2230     valgrind
2231     yasmexe
2232 "
2233
2234 CMDLINE_APPEND="
2235     extra_cflags
2236     extra_cxxflags
2237     extra_objcflags
2238     host_cppflags
2239 "
2240
2241 # code dependency declarations
2242
2243 # architecture extensions
2244
2245 armv5te_deps="arm"
2246 armv6_deps="arm"
2247 armv6t2_deps="arm"
2248 armv8_deps="aarch64"
2249 neon_deps_any="aarch64 arm"
2250 intrinsics_neon_deps="neon"
2251 vfp_deps_any="aarch64 arm"
2252 vfpv3_deps="vfp"
2253 setend_deps="arm"
2254
2255 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2256
2257 loongson2_deps="mips"
2258 loongson3_deps="mips"
2259 mipsfpu_deps="mips"
2260 mipsdsp_deps="mips"
2261 mipsdspr2_deps="mips"
2262 mips32r2_deps="mips"
2263 mips32r5_deps="mips"
2264 mips32r6_deps="mips"
2265 mips64r2_deps="mips"
2266 mips64r6_deps="mips"
2267 msa_deps="mipsfpu"
2268 mmi_deps="mips"
2269
2270 altivec_deps="ppc"
2271 dcbzl_deps="ppc"
2272 ldbrx_deps="ppc"
2273 ppc4xx_deps="ppc"
2274 vsx_deps="altivec"
2275 power8_deps="vsx"
2276
2277 cpunop_deps="i686"
2278 x86_64_select="i686"
2279 x86_64_suggest="fast_cmov"
2280
2281 amd3dnow_deps="mmx"
2282 amd3dnowext_deps="amd3dnow"
2283 i686_deps="x86"
2284 mmx_deps="x86"
2285 mmxext_deps="mmx"
2286 sse_deps="mmxext"
2287 sse2_deps="sse"
2288 sse3_deps="sse2"
2289 ssse3_deps="sse3"
2290 sse4_deps="ssse3"
2291 sse42_deps="sse4"
2292 aesni_deps="sse42"
2293 avx_deps="sse42"
2294 xop_deps="avx"
2295 fma3_deps="avx"
2296 fma4_deps="avx"
2297 avx2_deps="avx"
2298
2299 mmx_external_deps="yasm"
2300 mmx_inline_deps="inline_asm"
2301 mmx_suggest="mmx_external mmx_inline"
2302
2303 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2304     eval dep=\$${ext}_deps
2305     eval ${ext}_external_deps='"${dep}_external"'
2306     eval ${ext}_inline_deps='"${dep}_inline"'
2307     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2308 done
2309
2310 aligned_stack_if_any="aarch64 ppc x86"
2311 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2312 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2313 fast_unaligned_if_any="aarch64 ppc x86"
2314 simd_align_16_if_any="altivec neon sse"
2315
2316 # system capabilities
2317 symver_if_any="symver_asm_label symver_gnu_asm"
2318 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2319
2320 # threading support
2321 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2322 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2323 atomics_win32_if="MemoryBarrier"
2324 atomics_native_if_any="$ATOMICS_LIST"
2325 w32threads_deps="atomics_native"
2326 threads_if_any="$THREADS_LIST"
2327
2328 # subsystems
2329 dct_select="rdft"
2330 dirac_parse_select="golomb"
2331 error_resilience_select="me_cmp"
2332 faandct_deps="faan fdctdsp"
2333 faanidct_deps="faan idctdsp"
2334 h264dsp_select="startcode"
2335 frame_thread_encoder_deps="encoders threads"
2336 intrax8_select="blockdsp idctdsp"
2337 mdct_select="fft"
2338 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2339 mpeg_er_select="error_resilience"
2340 mpegaudio_select="mpegaudiodsp"
2341 mpegaudiodsp_select="dct"
2342 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2343 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2344 vc1dsp_select="h264chroma qpeldsp startcode"
2345 rdft_select="fft"
2346
2347 # decoders / encoders
2348 aac_decoder_select="imdct15 mdct sinewin"
2349 aac_fixed_decoder_select="mdct sinewin"
2350 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2351 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2352 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2353 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2354 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2355 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2356 adpcm_g722_decoder_select="g722dsp"
2357 adpcm_g722_encoder_select="g722dsp"
2358 aic_decoder_select="golomb idctdsp"
2359 alac_encoder_select="lpc"
2360 als_decoder_select="bswapdsp"
2361 amrnb_decoder_select="lsp"
2362 amrwb_decoder_select="lsp"
2363 amv_decoder_select="sp5x_decoder exif"
2364 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2365 ape_decoder_select="bswapdsp llauddsp"
2366 apng_decoder_select="zlib"
2367 apng_encoder_select="huffyuvencdsp zlib"
2368 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2369 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2370 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2371 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2372 atrac1_decoder_select="mdct sinewin"
2373 atrac3_decoder_select="mdct"
2374 atrac3p_decoder_select="mdct sinewin"
2375 avrn_decoder_select="exif jpegtables"
2376 bink_decoder_select="blockdsp hpeldsp"
2377 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2378 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2379 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2380 cllc_decoder_select="bswapdsp"
2381 comfortnoise_encoder_select="lpc"
2382 cook_decoder_select="audiodsp mdct sinewin"
2383 cscd_decoder_select="lzo"
2384 cscd_decoder_suggest="zlib"
2385 dca_decoder_select="mdct"
2386 dds_decoder_select="texturedsp"
2387 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2388 dnxhd_decoder_select="blockdsp idctdsp"
2389 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2390 dvvideo_decoder_select="dvprofile idctdsp"
2391 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2392 dxa_decoder_select="zlib"
2393 dxv_decoder_select="lzf texturedsp"
2394 eac3_decoder_select="ac3_decoder"
2395 eac3_encoder_select="ac3_encoder"
2396 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2397 eatgq_decoder_select="aandcttables"
2398 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2399 exr_decoder_select="zlib"
2400 ffv1_decoder_select="golomb rangecoder"
2401 ffv1_encoder_select="rangecoder"
2402 ffvhuff_decoder_select="huffyuv_decoder"
2403 ffvhuff_encoder_select="huffyuv_encoder"
2404 fic_decoder_select="golomb"
2405 flac_decoder_select="flacdsp golomb"
2406 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2407 flashsv2_decoder_select="zlib"
2408 flashsv2_encoder_select="zlib"
2409 flashsv_decoder_select="zlib"
2410 flashsv_encoder_select="zlib"
2411 flv_decoder_select="h263_decoder"
2412 flv_encoder_select="h263_encoder"
2413 fourxm_decoder_select="blockdsp bswapdsp"
2414 fraps_decoder_select="bswapdsp huffman"
2415 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2416 g729_decoder_select="audiodsp"
2417 h261_decoder_select="mpegvideo"
2418 h261_encoder_select="aandcttables mpegvideoenc"
2419 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2420 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2421 h263i_decoder_select="h263_decoder"
2422 h263p_decoder_select="h263_decoder"
2423 h263p_encoder_select="h263_encoder"
2424 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2425 h264_decoder_suggest="error_resilience"
2426 hap_decoder_select="snappy texturedsp"
2427 hap_encoder_deps="libsnappy"
2428 hap_encoder_select="texturedspenc"
2429 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2430 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2431 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2432 iac_decoder_select="imc_decoder"
2433 imc_decoder_select="bswapdsp fft mdct sinewin"
2434 indeo3_decoder_select="hpeldsp"
2435 indeo4_decoder_select="ividsp"
2436 indeo5_decoder_select="ividsp"
2437 interplay_video_decoder_select="hpeldsp"
2438 jpegls_decoder_select="golomb mjpeg_decoder"
2439 jpegls_encoder_select="golomb"
2440 jv_decoder_select="blockdsp"
2441 lagarith_decoder_select="huffyuvdsp"
2442 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2443 loco_decoder_select="golomb"
2444 magicyuv_decoder_select="huffyuvdsp llviddsp"
2445 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2446 metasound_decoder_select="lsp mdct sinewin"
2447 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2448 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2449 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2450 mjpegb_decoder_select="mjpeg_decoder"
2451 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2452 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2453 mlp_decoder_select="mlp_parser"
2454 motionpixels_decoder_select="bswapdsp"
2455 mp1_decoder_select="mpegaudio"
2456 mp1float_decoder_select="mpegaudio"
2457 mp2_decoder_select="mpegaudio"
2458 mp2float_decoder_select="mpegaudio"
2459 mp3_decoder_select="mpegaudio"
2460 mp3adu_decoder_select="mpegaudio"
2461 mp3adufloat_decoder_select="mpegaudio"
2462 mp3float_decoder_select="mpegaudio"
2463 mp3on4_decoder_select="mpegaudio"
2464 mp3on4float_decoder_select="mpegaudio"
2465 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2466 mpc8_decoder_select="mpegaudiodsp"
2467 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2468 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2469 mpegvideo_decoder_select="mpegvideo"
2470 mpeg1video_decoder_select="mpegvideo"
2471 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2472 mpeg2video_decoder_select="mpegvideo"
2473 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2474 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2475 mpeg4_encoder_select="h263_encoder"
2476 msa1_decoder_select="mss34dsp"
2477 msmpeg4v1_decoder_select="h263_decoder"
2478 msmpeg4v2_decoder_select="h263_decoder"
2479 msmpeg4v2_encoder_select="h263_encoder"
2480 msmpeg4v3_decoder_select="h263_decoder"
2481 msmpeg4v3_encoder_select="h263_encoder"
2482 mss2_decoder_select="vc1_decoder mpegvideo"
2483 mts2_decoder_select="mss34dsp"
2484 mxpeg_decoder_select="mjpeg_decoder"
2485 nellymoser_decoder_select="mdct sinewin"
2486 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2487 nuv_decoder_select="idctdsp lzo"
2488 on2avc_decoder_select="mdct"
2489 opus_decoder_deps="swresample"
2490 opus_decoder_select="imdct15"
2491 png_decoder_select="zlib"
2492 png_encoder_select="huffyuvencdsp zlib"
2493 prores_decoder_select="blockdsp idctdsp"
2494 prores_encoder_select="fdctdsp"
2495 qcelp_decoder_select="lsp"
2496 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2497 ra_144_decoder_select="audiodsp"
2498 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2499 ralf_decoder_select="golomb"
2500 rawvideo_decoder_select="bswapdsp"
2501 rscc_decoder_select="zlib"
2502 rtjpeg_decoder_select="me_cmp"
2503 rv10_decoder_select="h263_decoder"
2504 rv10_encoder_select="h263_encoder"
2505 rv20_decoder_select="h263_decoder"
2506 rv20_encoder_select="h263_encoder"
2507 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2508 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2509 screenpresso_decoder_select="zlib"
2510 shorten_decoder_select="golomb"
2511 sipr_decoder_select="lsp"
2512 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2513 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2514 sonic_decoder_select="golomb rangecoder"
2515 sonic_encoder_select="golomb rangecoder"
2516 sonic_ls_encoder_select="golomb rangecoder"
2517 sp5x_decoder_select="mjpeg_decoder"
2518 svq1_decoder_select="hpeldsp"
2519 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2520 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2521 svq3_decoder_suggest="zlib"
2522 tak_decoder_select="audiodsp"
2523 tdsc_decoder_select="zlib mjpeg_decoder"
2524 theora_decoder_select="vp3_decoder"
2525 thp_decoder_select="mjpeg_decoder"
2526 tiff_decoder_suggest="zlib lzma"
2527 tiff_encoder_suggest="zlib"
2528 truehd_decoder_select="mlp_parser"
2529 truemotion2_decoder_select="bswapdsp"
2530 truespeech_decoder_select="bswapdsp"
2531 tscc_decoder_select="zlib"
2532 twinvq_decoder_select="mdct lsp sinewin"
2533 txd_decoder_select="texturedsp"
2534 utvideo_decoder_select="bswapdsp huffyuvdsp"
2535 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2536 vble_decoder_select="huffyuvdsp"
2537 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2538 vc1_qsv_decoder_deps="libmfx"
2539 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2540 vc1image_decoder_select="vc1_decoder"
2541 vorbis_decoder_select="mdct"
2542 vorbis_encoder_select="mdct"
2543 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2544 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2545 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2546 vp6a_decoder_select="vp6_decoder"
2547 vp6f_decoder_select="vp6_decoder"
2548 vp7_decoder_select="h264pred videodsp vp8dsp"
2549 vp8_decoder_select="h264pred videodsp vp8dsp"
2550 vp9_decoder_select="videodsp vp9_parser"
2551 webp_decoder_select="vp8_decoder exif"
2552 wmalossless_decoder_select="llauddsp"
2553 wmapro_decoder_select="mdct sinewin wma_freqs"
2554 wmav1_decoder_select="mdct sinewin wma_freqs"
2555 wmav1_encoder_select="mdct sinewin wma_freqs"
2556 wmav2_decoder_select="mdct sinewin wma_freqs"
2557 wmav2_encoder_select="mdct sinewin wma_freqs"
2558 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2559 wmv1_decoder_select="h263_decoder"
2560 wmv1_encoder_select="h263_encoder"
2561 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2562 wmv2_encoder_select="h263_encoder wmv2dsp"
2563 wmv3_decoder_select="vc1_decoder"
2564 wmv3image_decoder_select="wmv3_decoder"
2565 xma1_decoder_select="wmapro_decoder"
2566 xma2_decoder_select="wmapro_decoder"
2567 zerocodec_decoder_select="zlib"
2568 zlib_decoder_select="zlib"
2569 zlib_encoder_select="zlib"
2570 zmbv_decoder_select="zlib"
2571 zmbv_encoder_select="zlib"
2572
2573 # platform codecs
2574 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2575 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2576
2577 # hardware accelerators
2578 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2579 cuda_deps_any="dlopen LoadLibrary"
2580 cuvid_deps="cuda"
2581 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2582 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2583 dxva2_extralibs="-luser32"
2584 vaapi_deps="va_va_h"
2585 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2586 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2587 vda_deps="vda_framework pthreads"
2588 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2589 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2590 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2591 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2592 xvmc_deps="X11_extensions_XvMClib_h"
2593
2594 h263_vaapi_hwaccel_deps="vaapi"
2595 h263_vaapi_hwaccel_select="h263_decoder"
2596 h263_videotoolbox_hwaccel_deps="videotoolbox"
2597 h263_videotoolbox_hwaccel_select="h263_decoder"
2598 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2599 h264_cuvid_hwaccel_deps="cuda cuvid"
2600 h264_d3d11va_hwaccel_deps="d3d11va"
2601 h264_d3d11va_hwaccel_select="h264_decoder"
2602 h264_dxva2_hwaccel_deps="dxva2"
2603 h264_dxva2_hwaccel_select="h264_decoder"
2604 h264_mediacodec_decoder_deps="mediacodec"
2605 h264_mediacodec_hwaccel_deps="mediacodec"
2606 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2607 h264_mmal_decoder_deps="mmal"
2608 h264_mmal_decoder_select="mmal"
2609 h264_mmal_hwaccel_deps="mmal"
2610 h264_omx_encoder_deps="omx"
2611 h264_qsv_hwaccel_deps="libmfx"
2612 h264_vaapi_hwaccel_deps="vaapi"
2613 h264_vaapi_hwaccel_select="h264_decoder"
2614 h264_vda_decoder_deps="vda"
2615 h264_vda_decoder_select="h264_decoder"
2616 h264_vda_hwaccel_deps="vda"
2617 h264_vda_hwaccel_select="h264_decoder"
2618 h264_vda_old_hwaccel_deps="vda"
2619 h264_vda_old_hwaccel_select="h264_decoder"
2620 h264_vdpau_decoder_deps="vdpau"
2621 h264_vdpau_decoder_select="h264_decoder"
2622 h264_vdpau_hwaccel_deps="vdpau"
2623 h264_vdpau_hwaccel_select="h264_decoder"
2624 h264_videotoolbox_hwaccel_deps="videotoolbox"
2625 h264_videotoolbox_hwaccel_select="h264_decoder"
2626 hevc_cuvid_hwaccel_deps="cuda cuvid"
2627 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2628 hevc_d3d11va_hwaccel_select="hevc_decoder"
2629 hevc_mediacodec_decoder_deps="mediacodec"
2630 hevc_mediacodec_hwaccel_deps="mediacodec"
2631 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2632 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2633 hevc_dxva2_hwaccel_select="hevc_decoder"
2634 hevc_qsv_hwaccel_deps="libmfx"
2635 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2636 hevc_vaapi_hwaccel_select="hevc_decoder"
2637 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2638 hevc_vdpau_hwaccel_select="hevc_decoder"
2639 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2640 mpeg_vdpau_decoder_deps="vdpau"
2641 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2642 mpeg_xvmc_hwaccel_deps="xvmc"
2643 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2644 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2645 mpeg1_vdpau_decoder_deps="vdpau"
2646 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2647 mpeg1_vdpau_hwaccel_deps="vdpau"
2648 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2649 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2650 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2651 mpeg1_xvmc_hwaccel_deps="xvmc"
2652 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2653 mpeg2_crystalhd_decoder_select="crystalhd"
2654 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2655 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2656 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2657 mpeg2_dxva2_hwaccel_deps="dxva2"
2658 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2659 mpeg2_mmal_decoder_deps="mmal"
2660 mpeg2_mmal_decoder_select="mmal"
2661 mpeg2_mmal_hwaccel_deps="mmal"
2662 mpeg2_qsv_hwaccel_deps="libmfx"
2663 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2664 mpeg2_vaapi_hwaccel_deps="vaapi"
2665 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2666 mpeg2_vdpau_hwaccel_deps="vdpau"
2667 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2668 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2669 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2670 mpeg2_xvmc_hwaccel_deps="xvmc"
2671 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2672 mpeg4_crystalhd_decoder_select="crystalhd"
2673 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2674 mpeg4_mediacodec_decoder_deps="mediacodec"
2675 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2676 mpeg4_mmal_decoder_deps="mmal"
2677 mpeg4_mmal_decoder_select="mmal"
2678 mpeg4_mmal_hwaccel_deps="mmal"
2679 mpeg4_omx_encoder_deps="omx"
2680 mpeg4_vaapi_hwaccel_deps="vaapi"
2681 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2682 mpeg4_vdpau_decoder_deps="vdpau"
2683 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2684 mpeg4_vdpau_hwaccel_deps="vdpau"
2685 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2686 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2687 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2688 msmpeg4_crystalhd_decoder_select="crystalhd"
2689 vc1_crystalhd_decoder_select="crystalhd"
2690 vc1_cuvid_hwaccel_deps="cuda cuvid"
2691 vc1_d3d11va_hwaccel_deps="d3d11va"
2692 vc1_d3d11va_hwaccel_select="vc1_decoder"
2693 vc1_dxva2_hwaccel_deps="dxva2"
2694 vc1_dxva2_hwaccel_select="vc1_decoder"
2695 vc1_mmal_decoder_deps="mmal"
2696 vc1_mmal_decoder_select="mmal"
2697 vc1_mmal_hwaccel_deps="mmal"
2698 vc1_qsv_hwaccel_deps="libmfx"
2699 vc1_qsv_hwaccel_select="qsvdec_vc1"
2700 vc1_vaapi_hwaccel_deps="vaapi"
2701 vc1_vaapi_hwaccel_select="vc1_decoder"
2702 vc1_vdpau_decoder_deps="vdpau"
2703 vc1_vdpau_decoder_select="vc1_decoder"
2704 vc1_vdpau_hwaccel_deps="vdpau"
2705 vc1_vdpau_hwaccel_select="vc1_decoder"
2706 vp8_cuvid_hwaccel_deps="cuda cuvid"
2707 vp9_cuvid_hwaccel_deps="cuda cuvid"
2708 vp8_mediacodec_decoder_deps="mediacodec"
2709 vp8_mediacodec_hwaccel_deps="mediacodec"
2710 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2711 vp9_d3d11va_hwaccel_select="vp9_decoder"
2712 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2713 vp9_dxva2_hwaccel_select="vp9_decoder"
2714 vp9_mediacodec_decoder_deps="mediacodec"
2715 vp9_mediacodec_hwaccel_deps="mediacodec"
2716 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2717 vp9_vaapi_hwaccel_select="vp9_decoder"
2718 wmv3_crystalhd_decoder_select="crystalhd"
2719 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2720 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2721 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2722 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2723 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2724
2725 # hardware-accelerated codecs
2726 omx_deps="dlopen pthreads"
2727 omx_extralibs='$ldl'
2728 qsvdec_select="qsv"
2729 qsvenc_select="qsv"
2730 vaapi_encode_deps="vaapi"
2731
2732 hwupload_cuda_filter_deps="cuda"
2733 scale_npp_filter_deps="cuda libnpp"
2734
2735 nvenc_deps="cuda"
2736 nvenc_deps_any="dlopen LoadLibrary"
2737 nvenc_encoder_deps="nvenc"
2738 h264_cuvid_decoder_deps="cuda cuvid"
2739 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2740 h264_nvenc_encoder_deps="nvenc"
2741 h264_qsv_decoder_deps="libmfx"
2742 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2743 h264_qsv_encoder_deps="libmfx"
2744 h264_qsv_encoder_select="qsvenc"
2745 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2746 h264_vaapi_encoder_select="vaapi_encode golomb"
2747
2748 hevc_cuvid_decoder_deps="cuda cuvid"
2749 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2750 hevc_nvenc_encoder_deps="nvenc"
2751 hevc_qsv_decoder_deps="libmfx"
2752 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2753 hevc_qsv_encoder_deps="libmfx"
2754 hevc_qsv_encoder_select="qsvenc"
2755 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2756 hevc_vaapi_encoder_select="vaapi_encode golomb"
2757 mjpeg_cuvid_decoder_deps="cuda cuvid"
2758 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2759 mpeg1_cuvid_decoder_deps="cuda cuvid"
2760 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2761 mpeg2_cuvid_decoder_deps="cuda cuvid"
2762 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2763 mpeg2_qsv_decoder_deps="libmfx"
2764 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2765 mpeg2_qsv_encoder_deps="libmfx"
2766 mpeg2_qsv_encoder_select="qsvenc"
2767 mpeg4_cuvid_decoder_deps="cuda cuvid"
2768 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2769 nvenc_h264_encoder_deps="nvenc"
2770 nvenc_hevc_encoder_deps="nvenc"
2771
2772 vc1_cuvid_decoder_deps="cuda cuvid"
2773 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2774 vp8_cuvid_decoder_deps="cuda cuvid"
2775 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2776 vp9_cuvid_decoder_deps="cuda cuvid"
2777 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2778
2779 # parsers
2780 h264_parser_select="golomb h264dsp h264parse"
2781 hevc_parser_select="golomb"
2782 mpegvideo_parser_select="mpegvideo"
2783 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2784 vc1_parser_select="vc1dsp"
2785
2786 # bitstream_filters
2787 mjpeg2jpeg_bsf_select="jpegtables"
2788
2789 # external libraries
2790 aac_at_decoder_deps="audiotoolbox"
2791 ac3_at_decoder_deps="audiotoolbox"
2792 ac3_at_decoder_select="ac3_parser"
2793 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2794 alac_at_decoder_deps="audiotoolbox"
2795 amr_nb_at_decoder_deps="audiotoolbox"
2796 avisynth_deps_any="dlopen LoadLibrary"
2797 avisynth_demuxer_deps="avisynth"
2798 avisynth_demuxer_select="riffdec"
2799 eac3_at_decoder_deps="audiotoolbox"
2800 eac3_at_decoder_select="ac3_parser"
2801 gsm_ms_at_decoder_deps="audiotoolbox"
2802 ilbc_at_decoder_deps="audiotoolbox"
2803 mp1_at_decoder_deps="audiotoolbox"
2804 mp2_at_decoder_deps="audiotoolbox"
2805 mp3_at_decoder_deps="audiotoolbox"
2806 pcm_alaw_at_decoder_deps="audiotoolbox"
2807 pcm_mulaw_at_decoder_deps="audiotoolbox"
2808 qdmc_at_decoder_deps="audiotoolbox"
2809 qdm2_at_decoder_deps="audiotoolbox"
2810 aac_at_encoder_deps="audiotoolbox"
2811 aac_at_encoder_select="audio_frame_queue"
2812 alac_at_encoder_deps="audiotoolbox"
2813 alac_at_encoder_select="audio_frame_queue"
2814 ilbc_at_encoder_deps="audiotoolbox"
2815 ilbc_at_encoder_select="audio_frame_queue"
2816 pcm_alaw_at_encoder_deps="audiotoolbox"
2817 pcm_alaw_at_encoder_select="audio_frame_queue"
2818 pcm_mulaw_at_encoder_deps="audiotoolbox"
2819 pcm_mulaw_at_encoder_select="audio_frame_queue"
2820 chromaprint_muxer_deps="chromaprint"
2821 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2822 libcelt_decoder_deps="libcelt"
2823 libfdk_aac_decoder_deps="libfdk_aac"
2824 libfdk_aac_encoder_deps="libfdk_aac"
2825 libfdk_aac_encoder_select="audio_frame_queue"
2826 libgme_demuxer_deps="libgme"
2827 libgsm_decoder_deps="libgsm"
2828 libgsm_encoder_deps="libgsm"
2829 libgsm_ms_decoder_deps="libgsm"
2830 libgsm_ms_encoder_deps="libgsm"
2831 libilbc_decoder_deps="libilbc"
2832 libilbc_encoder_deps="libilbc"
2833 libkvazaar_encoder_deps="libkvazaar"
2834 libmodplug_demuxer_deps="libmodplug"
2835 libmp3lame_encoder_deps="libmp3lame"
2836 libmp3lame_encoder_select="audio_frame_queue"
2837 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2838 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2839 libopencore_amrnb_encoder_select="audio_frame_queue"
2840 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2841 libopenh264_decoder_deps="libopenh264"
2842 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2843 libopenh264_encoder_deps="libopenh264"
2844 libopenjpeg_decoder_deps="libopenjpeg"
2845 libopenjpeg_encoder_deps="libopenjpeg"
2846 libopenmpt_demuxer_deps="libopenmpt"
2847 libopus_decoder_deps="libopus"
2848 libopus_encoder_deps="libopus"
2849 libopus_encoder_select="audio_frame_queue"
2850 libschroedinger_decoder_deps="libschroedinger"
2851 libschroedinger_encoder_deps="libschroedinger"
2852 libshine_encoder_deps="libshine"
2853 libshine_encoder_select="audio_frame_queue"
2854 libspeex_decoder_deps="libspeex"
2855 libspeex_encoder_deps="libspeex"
2856 libspeex_encoder_select="audio_frame_queue"
2857 libtheora_encoder_deps="libtheora"
2858 libtwolame_encoder_deps="libtwolame"
2859 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2860 libvorbis_decoder_deps="libvorbis"
2861 libvorbis_encoder_deps="libvorbis"
2862 libvorbis_encoder_select="audio_frame_queue"
2863 libvpx_vp8_decoder_deps="libvpx"
2864 libvpx_vp8_encoder_deps="libvpx"
2865 libvpx_vp9_decoder_deps="libvpx"
2866 libvpx_vp9_encoder_deps="libvpx"
2867 libwavpack_encoder_deps="libwavpack"
2868 libwebp_encoder_deps="libwebp"
2869 libwebp_anim_encoder_deps="libwebp"
2870 libx262_encoder_deps="libx262"
2871 libx264_encoder_deps="libx264"
2872 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2873 libx264rgb_encoder_select="libx264_encoder"
2874 libx265_encoder_deps="libx265"
2875 libxavs_encoder_deps="libxavs"
2876 libxvid_encoder_deps="libxvid"
2877 libzvbi_teletext_decoder_deps="libzvbi"
2878 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2879 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2880 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2881 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2882 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2883
2884 # demuxers / muxers
2885 ac3_demuxer_select="ac3_parser"
2886 asf_demuxer_select="riffdec"
2887 asf_o_demuxer_select="riffdec"
2888 asf_muxer_select="riffenc"
2889 asf_stream_muxer_select="asf_muxer"
2890 avi_demuxer_select="iso_media riffdec exif"
2891 avi_muxer_select="riffenc"
2892 caf_demuxer_select="iso_media riffdec"
2893 dash_muxer_select="mp4_muxer"
2894 dirac_demuxer_select="dirac_parser"
2895 dts_demuxer_select="dca_parser"
2896 dtshd_demuxer_select="dca_parser"
2897 dv_demuxer_select="dvprofile"
2898 dv_muxer_select="dvprofile"
2899 dxa_demuxer_select="riffdec"
2900 eac3_demuxer_select="ac3_parser"
2901 f4v_muxer_select="mov_muxer"
2902 fifo_muxer_deps="threads"
2903 flac_demuxer_select="flac_parser"
2904 hds_muxer_select="flv_muxer"
2905 hls_muxer_select="mpegts_muxer"
2906 image2_alias_pix_demuxer_select="image2_demuxer"
2907 image2_brender_pix_demuxer_select="image2_demuxer"
2908 ipod_muxer_select="mov_muxer"
2909 ismv_muxer_select="mov_muxer"
2910 libnut_demuxer_deps="libnut"
2911 libnut_muxer_deps="libnut"
2912 matroska_audio_muxer_select="matroska_muxer"
2913 matroska_demuxer_select="iso_media riffdec"
2914 matroska_demuxer_suggest="bzlib lzo zlib"
2915 matroska_muxer_select="iso_media riffenc"
2916 mmf_muxer_select="riffenc"
2917 mov_demuxer_select="iso_media riffdec"
2918 mov_demuxer_suggest="zlib"
2919 mov_muxer_select="iso_media riffenc rtpenc_chain"
2920 mp3_demuxer_select="mpegaudio_parser"
2921 mp4_muxer_select="mov_muxer"
2922 mpegts_demuxer_select="iso_media"
2923 mpegts_muxer_select="adts_muxer latm_muxer"
2924 mpegtsraw_demuxer_select="mpegts_demuxer"
2925 mxf_d10_muxer_select="mxf_muxer"
2926 mxf_opatom_muxer_select="mxf_muxer"
2927 nut_muxer_select="riffenc"
2928 nuv_demuxer_select="riffdec"
2929 oga_muxer_select="ogg_muxer"
2930 ogg_demuxer_select="dirac_parse"
2931 ogv_muxer_select="ogg_muxer"
2932 opus_muxer_select="ogg_muxer"
2933 psp_muxer_select="mov_muxer"
2934 rtp_demuxer_select="sdp_demuxer"
2935 rtp_muxer_select="golomb"
2936 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2937 rtsp_demuxer_select="http_protocol rtpdec"
2938 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2939 sap_demuxer_select="sdp_demuxer"
2940 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2941 sdp_demuxer_select="rtpdec"
2942 smoothstreaming_muxer_select="ismv_muxer"
2943 spdif_muxer_select="aac_parser"
2944 spx_muxer_select="ogg_muxer"
2945 swf_demuxer_suggest="zlib"
2946 tak_demuxer_select="tak_parser"
2947 tg2_muxer_select="mov_muxer"
2948 tgp_muxer_select="mov_muxer"
2949 vobsub_demuxer_select="mpegps_demuxer"
2950 w64_demuxer_select="wav_demuxer"
2951 w64_muxer_select="wav_muxer"
2952 wav_demuxer_select="riffdec"
2953 wav_muxer_select="riffenc"
2954 webm_muxer_select="iso_media riffenc"
2955 webm_dash_manifest_demuxer_select="matroska_demuxer"
2956 wtv_demuxer_select="mpegts_demuxer riffdec"
2957 wtv_muxer_select="mpegts_muxer riffenc"
2958 xmv_demuxer_select="riffdec"
2959 xwma_demuxer_select="riffdec"
2960
2961 # indevs / outdevs
2962 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2963 alsa_outdev_deps="alsa_asoundlib_h"
2964 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2965 avfoundation_indev_select="avfoundation"
2966 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2967 caca_outdev_deps="libcaca"
2968 decklink_indev_deps="decklink pthreads"
2969 decklink_indev_extralibs="-lstdc++"
2970 decklink_outdev_deps="decklink pthreads"
2971 decklink_outdev_extralibs="-lstdc++"
2972 dshow_indev_deps="IBaseFilter"
2973 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2974 dv1394_indev_deps="dv1394"
2975 dv1394_indev_select="dv_demuxer"
2976 fbdev_indev_deps="linux_fb_h"
2977 fbdev_outdev_deps="linux_fb_h"
2978 gdigrab_indev_deps="CreateDIBSection"
2979 gdigrab_indev_extralibs="-lgdi32"
2980 gdigrab_indev_select="bmp_decoder"
2981 iec61883_indev_deps="libiec61883"
2982 jack_indev_deps="jack_jack_h"
2983 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2984 lavfi_indev_deps="avfilter"
2985 libcdio_indev_deps="libcdio"
2986 libdc1394_indev_deps="libdc1394"
2987 libv4l2_indev_deps="libv4l2"
2988 openal_indev_deps="openal"
2989 opengl_outdev_deps="opengl"
2990 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2991 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2992 pulse_indev_deps="libpulse"
2993 pulse_outdev_deps="libpulse"
2994 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2995 qtkit_indev_select="qtkit"
2996 sdl2_outdev_deps="sdl2"
2997 sndio_indev_deps="sndio_h"
2998 sndio_outdev_deps="sndio_h"
2999 v4l_indev_deps="linux_videodev_h"
3000 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3001 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3002 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3003 vfwcap_indev_extralibs="-lavicap32"
3004 x11grab_indev_deps="x11grab"
3005 x11grab_xcb_indev_deps="libxcb"
3006 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3007 xv_outdev_extralibs="-lXv -lX11 -lXext"
3008
3009 # protocols
3010 async_protocol_deps="threads"
3011 bluray_protocol_deps="libbluray"
3012 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3013 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3014 ffrtmpcrypt_protocol_select="tcp_protocol"
3015 ffrtmphttp_protocol_deps="!librtmp_protocol"
3016 ffrtmphttp_protocol_select="http_protocol"
3017 ftp_protocol_select="tcp_protocol"
3018 gopher_protocol_select="network"
3019 http_protocol_select="tcp_protocol"
3020 httpproxy_protocol_select="tcp_protocol"
3021 https_protocol_select="tls_protocol"
3022 icecast_protocol_select="http_protocol"
3023 librtmp_protocol_deps="librtmp"
3024 librtmpe_protocol_deps="librtmp"
3025 librtmps_protocol_deps="librtmp"
3026 librtmpt_protocol_deps="librtmp"
3027 librtmpte_protocol_deps="librtmp"
3028 libsmbclient_protocol_deps="libsmbclient gplv3"
3029 libssh_protocol_deps="libssh"
3030 mmsh_protocol_select="http_protocol"
3031 mmst_protocol_select="network"
3032 rtmp_protocol_deps="!librtmp_protocol"
3033 rtmp_protocol_select="tcp_protocol"
3034 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3035 rtmps_protocol_deps="!librtmp_protocol"
3036 rtmps_protocol_select="tls_protocol"
3037 rtmpt_protocol_select="ffrtmphttp_protocol"
3038 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3039 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3040 rtp_protocol_select="udp_protocol"
3041 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3042 sctp_protocol_select="network"
3043 srtp_protocol_select="rtp_protocol srtp"
3044 tcp_protocol_select="network"
3045 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3046 tls_gnutls_protocol_select="tcp_protocol"
3047 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3048 tls_openssl_protocol_select="tcp_protocol"
3049 tls_schannel_protocol_deps="schannel"
3050 tls_schannel_protocol_select="tcp_protocol"
3051 tls_securetransport_protocol_deps="securetransport"
3052 tls_securetransport_protocol_select="tcp_protocol"
3053 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3054 udp_protocol_select="network"
3055 udplite_protocol_select="network"
3056 unix_protocol_deps="sys_un_h"
3057 unix_protocol_select="network"
3058
3059 # filters
3060 afftfilt_filter_deps="avcodec"
3061 afftfilt_filter_select="fft"
3062 amovie_filter_deps="avcodec avformat"
3063 aresample_filter_deps="swresample"
3064 ass_filter_deps="libass"
3065 asyncts_filter_deps="avresample"
3066 atempo_filter_deps="avcodec"
3067 atempo_filter_select="rdft"
3068 azmq_filter_deps="libzmq"
3069 blackframe_filter_deps="gpl"
3070 boxblur_filter_deps="gpl"
3071 bs2b_filter_deps="libbs2b"
3072 colormatrix_filter_deps="gpl"
3073 cover_rect_filter_deps="avcodec avformat gpl"
3074 cropdetect_filter_deps="gpl"
3075 delogo_filter_deps="gpl"
3076 deshake_filter_select="pixelutils"
3077 drawtext_filter_deps="libfreetype"
3078 eq_filter_deps="gpl"
3079 fftfilt_filter_deps="avcodec"
3080 fftfilt_filter_select="rdft"
3081 find_rect_filter_deps="avcodec avformat gpl"
3082 firequalizer_filter_deps="avcodec"
3083 firequalizer_filter_select="rdft"
3084 flite_filter_deps="libflite"
3085 framerate_filter_select="pixelutils"
3086 frei0r_filter_deps="frei0r dlopen"
3087 frei0r_src_filter_deps="frei0r dlopen"
3088 fspp_filter_deps="gpl"
3089 geq_filter_deps="gpl"
3090 histeq_filter_deps="gpl"
3091 hqdn3d_filter_deps="gpl"
3092 interlace_filter_deps="gpl"
3093 kerndeint_filter_deps="gpl"
3094 ladspa_filter_deps="ladspa dlopen"
3095 mcdeint_filter_deps="avcodec gpl"
3096 movie_filter_deps="avcodec avformat"
3097 mpdecimate_filter_deps="gpl"
3098 mpdecimate_filter_select="pixelutils"
3099 mptestsrc_filter_deps="gpl"
3100 negate_filter_deps="lut_filter"
3101 nnedi_filter_deps="gpl"
3102 ocr_filter_deps="libtesseract"
3103 ocv_filter_deps="libopencv"
3104 owdenoise_filter_deps="gpl"
3105 pan_filter_deps="swresample"
3106 perspective_filter_deps="gpl"
3107 phase_filter_deps="gpl"
3108 pp7_filter_deps="gpl"
3109 pp_filter_deps="gpl postproc"
3110 pullup_filter_deps="gpl"
3111 removelogo_filter_deps="avcodec avformat swscale"
3112 repeatfields_filter_deps="gpl"
3113 resample_filter_deps="avresample"
3114 rubberband_filter_deps="librubberband"
3115 sab_filter_deps="gpl swscale"
3116 scale2ref_filter_deps="swscale"
3117 scale_filter_deps="swscale"
3118 select_filter_select="pixelutils"
3119 showcqt_filter_deps="avcodec avformat swscale"
3120 showcqt_filter_select="fft"
3121 showfreqs_filter_deps="avcodec"
3122 showfreqs_filter_select="fft"
3123 showspectrum_filter_deps="avcodec"
3124 showspectrum_filter_select="fft"
3125 showspectrumpic_filter_deps="avcodec"
3126 showspectrumpic_filter_select="fft"
3127 smartblur_filter_deps="gpl swscale"
3128 sofalizer_filter_deps="netcdf avcodec"
3129 sofalizer_filter_select="fft"
3130 spectrumsynth_filter_deps="avcodec"
3131 spectrumsynth_filter_select="fft"
3132 spp_filter_deps="gpl avcodec"
3133 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3134 stereo3d_filter_deps="gpl"
3135 subtitles_filter_deps="avformat avcodec libass"
3136 super2xsai_filter_deps="gpl"
3137 pixfmts_super2xsai_test_deps="super2xsai_filter"
3138 tinterlace_filter_deps="gpl"
3139 tinterlace_merge_test_deps="tinterlace_filter"
3140 tinterlace_pad_test_deps="tinterlace_filter"
3141 uspp_filter_deps="gpl avcodec"
3142 vaguedenoiser_filter_deps="gpl"
3143 vidstabdetect_filter_deps="libvidstab"
3144 vidstabtransform_filter_deps="libvidstab"
3145 zmq_filter_deps="libzmq"
3146 zoompan_filter_deps="swscale"
3147 zscale_filter_deps="libzimg"
3148 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3149
3150 # examples
3151 avio_dir_cmd_deps="avformat avutil"
3152 avio_reading_deps="avformat avcodec avutil"
3153 decoding_encoding_example_deps="avcodec avformat avutil"
3154 demuxing_decoding_example_deps="avcodec avformat avutil"
3155 extract_mvs_example_deps="avcodec avformat avutil"
3156 filter_audio_example_deps="avfilter avutil"
3157 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3158 filtering_video_example_deps="avfilter avcodec avformat avutil"
3159 http_multiclient_example_deps="avformat avutil fork"
3160 metadata_example_deps="avformat avutil"
3161 muxing_example_deps="avcodec avformat avutil swscale"
3162 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3163 remuxing_example_deps="avcodec avformat avutil"
3164 resampling_audio_example_deps="avutil swresample"
3165 scaling_video_example_deps="avutil swscale"
3166 transcode_aac_example_deps="avcodec avformat swresample"
3167 transcoding_example_deps="avfilter avcodec avformat avutil"
3168
3169 # libraries, in linking order
3170 avcodec_deps="avutil"
3171 avdevice_deps="avformat avcodec avutil"
3172 avfilter_deps="avutil"
3173 avformat_deps="avcodec avutil"
3174 avresample_deps="avutil"
3175 postproc_deps="avutil gpl"
3176 swresample_deps="avutil"
3177 swscale_deps="avutil"
3178
3179 # programs
3180 ffmpeg_deps="avcodec avfilter avformat swresample"
3181 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3182                null_filter
3183                setpts_filter trim_filter"
3184 ffplay_deps="avcodec avformat swscale swresample sdl2"
3185 ffplay_libs='$sdl2_libs'
3186 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3187 ffprobe_deps="avcodec avformat"
3188 ffserver_deps="avformat fork sarestart"
3189 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3190
3191 # documentation
3192 podpages_deps="perl"
3193 manpages_deps="perl pod2man"
3194 htmlpages_deps="perl"
3195 htmlpages_deps_any="makeinfo_html texi2html"
3196 txtpages_deps="perl makeinfo"
3197 doc_deps_any="manpages htmlpages podpages txtpages"
3198
3199 # default parameters
3200
3201 logfile="config.log"
3202
3203 # installation paths
3204 prefix_default="/usr/local"
3205 bindir_default='${prefix}/bin'
3206 datadir_default='${prefix}/share/ffmpeg'
3207 docdir_default='${prefix}/share/doc/ffmpeg'
3208 incdir_default='${prefix}/include'
3209 libdir_default='${prefix}/lib'
3210 mandir_default='${prefix}/share/man'
3211
3212 # toolchain
3213 ar_default="ar"
3214 cc_default="gcc"
3215 cxx_default="g++"
3216 host_cc_default="gcc"
3217 cp_f="cp -f"
3218 doxygen_default="doxygen"
3219 install="install"
3220 ln_s_default="ln -s -f"
3221 nm_default="nm -g"
3222 objformat="elf"
3223 pkg_config_default=pkg-config
3224 ranlib_default="ranlib"
3225 strip_default="strip"
3226 version_script='--version-script'
3227 yasmexe_default="yasm"
3228 windres_default="windres"
3229
3230 # OS
3231 target_os_default=$(tolower $(uname -s))
3232 host_os=$target_os_default
3233
3234 # machine
3235 if test "$target_os_default" = aix; then
3236     arch_default=$(uname -p)
3237     strip_default="strip -X32_64"
3238 else
3239     arch_default=$(uname -m)
3240 fi
3241 cpu="generic"
3242 intrinsics="none"
3243
3244 # configurable options
3245 enable $PROGRAM_LIST
3246 enable $DOCUMENT_LIST
3247 enable $EXAMPLE_LIST
3248 enable $(filter_out avresample $LIBRARY_LIST)
3249 enable stripping
3250
3251 enable asm
3252 enable debug
3253 enable doc
3254 enable faan faandct faanidct
3255 enable optimizations
3256 enable runtime_cpudetect
3257 enable safe_bitstream_reader
3258 enable static
3259 enable swscale_alpha
3260 enable valgrind_backtrace
3261
3262 sws_max_filter_size_default=256
3263 set_default sws_max_filter_size
3264
3265 # build settings
3266 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3267 LIBPREF="lib"
3268 LIBSUF=".a"
3269 FULLNAME='$(NAME)$(BUILDSUF)'
3270 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3271 SLIBPREF="lib"
3272 SLIBSUF=".so"
3273 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3274 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3275 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3276 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3277 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3278 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3279 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3280
3281 asflags_filter=echo
3282 cflags_filter=echo
3283 ldflags_filter=echo
3284
3285 AS_C='-c'
3286 AS_O='-o $@'
3287 CC_C='-c'
3288 CC_E='-E -o $@'
3289 CC_O='-o $@'
3290 CXX_C='-c'
3291 CXX_O='-o $@'
3292 OBJCC_C='-c'
3293 OBJCC_E='-E -o $@'
3294 OBJCC_O='-o $@'
3295 LD_O='-o $@'
3296 LD_LIB='-l%'
3297 LD_PATH='-L'
3298 HOSTCC_C='-c'
3299 HOSTCC_E='-E -o $@'
3300 HOSTCC_O='-o $@'
3301 HOSTLD_O='-o $@'
3302
3303 host_libs='-lm'
3304 host_cflags_filter=echo
3305 host_ldflags_filter=echo
3306
3307 target_path='$(CURDIR)'
3308
3309 # since the object filename is not given with the -MM flag, the compiler
3310 # is only able to print the basename, and we must add the path ourselves
3311 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3312 DEPFLAGS='-MM'
3313
3314 # find source path
3315 if test -f configure; then
3316     source_path=.
3317 else
3318     source_path=$(cd $(dirname "$0"); pwd)
3319     case "$source_path" in
3320         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3321     esac
3322     test -e "$source_path/config.h" &&
3323         die "Out of tree builds are impossible with config.h in source dir."
3324 fi
3325
3326 for v in "$@"; do
3327     r=${v#*=}
3328     l=${v%"$r"}
3329     r=$(sh_quote "$r")
3330     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3331 done
3332
3333 find_things(){
3334     thing=$1
3335     pattern=$2
3336     file=$source_path/$3
3337     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3338 }
3339
3340 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3341 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3342 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3343 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3344 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3345 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3346 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3347 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3348 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3349
3350 find_things_extern(){
3351     thing=$1
3352     pattern=$2
3353     file=$source_path/$3
3354     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3355 }
3356
3357 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3358 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3359
3360 ALL_COMPONENTS="
3361     $BSF_LIST
3362     $DECODER_LIST
3363     $DEMUXER_LIST
3364     $ENCODER_LIST
3365     $FILTER_LIST
3366     $HWACCEL_LIST
3367     $INDEV_LIST
3368     $MUXER_LIST
3369     $OUTDEV_LIST
3370     $PARSER_LIST
3371     $PROTOCOL_LIST
3372 "
3373
3374 for n in $COMPONENT_LIST; do
3375     v=$(toupper ${n%s})_LIST
3376     eval enable \$$v
3377     eval ${n}_if_any="\$$v"
3378 done
3379
3380 enable $ARCH_EXT_LIST
3381
3382 die_unknown(){
3383     echo "Unknown option \"$1\"."
3384     echo "See $0 --help for available options."
3385     exit 1
3386 }
3387
3388 print_in_columns() {
3389     cols=$(expr $ncols / 24)
3390     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3391 }
3392
3393 show_list() {
3394     suffix=_$1
3395     shift
3396     echo $* | sed s/$suffix//g | print_in_columns
3397     exit 0
3398 }
3399
3400 rand_list(){
3401     IFS=', '
3402     set -- $*
3403     unset IFS
3404     for thing; do
3405         comp=${thing%:*}
3406         prob=${thing#$comp}
3407         prob=${prob#:}
3408         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3409         echo "prob ${prob:-0.5}"
3410         printf '%s\n' $comp
3411     done
3412 }
3413
3414 do_random(){
3415     action=$1
3416     shift
3417     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3418     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3419 }
3420
3421 for opt do
3422     optval="${opt#*=}"
3423     case "$opt" in
3424         --extra-ldflags=*)
3425             add_ldflags $optval
3426         ;;
3427         --extra-ldexeflags=*)
3428             add_ldexeflags $optval
3429         ;;
3430         --extra-ldlibflags=*)
3431             add_ldlibflags $optval
3432         ;;
3433         --extra-libs=*)
3434             add_extralibs $optval
3435         ;;
3436         --disable-devices)
3437             disable $INDEV_LIST $OUTDEV_LIST
3438         ;;
3439         --enable-debug=*)
3440             debuglevel="$optval"
3441         ;;
3442         --disable-programs)
3443             disable $PROGRAM_LIST
3444         ;;
3445         --disable-everything)
3446             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3447         ;;
3448         --disable-all)
3449             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3450             disable $LIBRARY_LIST $PROGRAM_LIST doc
3451             enable avutil
3452         ;;
3453         --enable-random|--disable-random)
3454             action=${opt%%-random}
3455             do_random ${action#--} $COMPONENT_LIST
3456         ;;
3457         --enable-random=*|--disable-random=*)
3458             action=${opt%%-random=*}
3459             do_random ${action#--} $optval
3460         ;;
3461         --enable-*=*|--disable-*=*)
3462             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3463             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3464             eval list=\$$(toupper $thing)_LIST
3465             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3466             list=$(filter "$name" $list)
3467             [ "$list" = "" ] && warn "Option $opt did not match anything"
3468             $action $list
3469         ;;
3470         --enable-?*|--disable-?*)
3471             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3472             if is_in $option $COMPONENT_LIST; then
3473                 test $action = disable && action=unset
3474                 eval $action \$$(toupper ${option%s})_LIST
3475             elif is_in $option $CMDLINE_SELECT; then
3476                 $action $option
3477             else
3478                 die_unknown $opt
3479             fi
3480         ;;
3481         --list-*)
3482             NAME="${opt#--list-}"
3483             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3484             NAME=${NAME%s}
3485             eval show_list $NAME \$$(toupper $NAME)_LIST
3486         ;;
3487         --help|-h) show_help
3488         ;;
3489         --fatal-warnings) enable fatal_warnings
3490         ;;
3491         *)
3492             optname="${opt%%=*}"
3493             optname="${optname#--}"
3494             optname=$(echo "$optname" | sed 's/-/_/g')
3495             if is_in $optname $CMDLINE_SET; then
3496                 eval $optname='$optval'
3497             elif is_in $optname $CMDLINE_APPEND; then
3498                 append $optname "$optval"
3499             else
3500                 die_unknown $opt
3501             fi
3502         ;;
3503     esac
3504 done
3505
3506 for e in $env; do
3507     eval "export $e"
3508 done
3509
3510 # Mark specifically enabled, but normally autodetected libraries as requested.
3511 for lib in $AUTODETECT_LIBS; do
3512     enabled $lib && request $lib
3513 done
3514
3515 # Enable platform codecs by default.
3516 enable_weak audiotoolbox
3517
3518 # Enable hwaccels by default.
3519 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3520 enable_weak xlib
3521
3522 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3523
3524 disabled logging && logfile=/dev/null
3525
3526 # Disable all the library-specific components if the library itself
3527 # is disabled, see AVCODEC_LIST and following _LIST variables.
3528
3529 disable_components(){
3530     disabled ${1} && disable $(
3531         eval components="\$$(toupper ${1})_COMPONENTS"
3532         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3533     )
3534 }
3535
3536 map 'disable_components $v' $LIBRARY_LIST
3537
3538 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3539 set >> $logfile
3540
3541 test -n "$valgrind" && toolchain="valgrind-memcheck"
3542
3543 case "$toolchain" in
3544     *-asan)
3545         cc_default="${toolchain%-asan}"
3546         add_cflags  -fsanitize=address
3547         add_ldflags -fsanitize=address
3548     ;;
3549     *-msan)
3550         cc_default="${toolchain%-msan}"
3551         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3552         add_ldflags -fsanitize=memory
3553     ;;
3554     *-tsan)
3555         cc_default="${toolchain%-tsan}"
3556         add_cflags  -fsanitize=thread -fPIE
3557         add_ldflags -fsanitize=thread -pie
3558         case "$toolchain" in
3559             gcc-tsan)
3560                 add_cflags  -fPIC
3561                 add_ldflags -fPIC
3562                 ;;
3563         esac
3564     ;;
3565     *-usan)
3566         cc_default="${toolchain%-usan}"
3567         add_cflags  -fsanitize=undefined
3568         add_ldflags -fsanitize=undefined
3569     ;;
3570     valgrind-*)
3571         target_exec_default="valgrind"
3572         case "$toolchain" in
3573             valgrind-massif)
3574                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3575                 ;;
3576             valgrind-memcheck)
3577                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3578                 ;;
3579         esac
3580     ;;
3581     msvc)
3582         # Check whether the current MSVC version needs the C99 converter.
3583         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3584         # support enough of C99 to build ffmpeg. Default to the new
3585         # behaviour if the regexp was unable to match anything, since this
3586         # successfully parses the version number of existing supported
3587         # versions that require the converter (MSVC 2010 and 2012).
3588         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3589         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3590             cc_default="cl"
3591         else
3592             cc_default="c99wrap cl"
3593         fi
3594         ld_default="$source_path/compat/windows/mslink"
3595         nm_default="dumpbin -symbols"
3596         ar_default="lib"
3597         case "$arch" in
3598         arm*)
3599             as_default="armasm"
3600             ;;
3601         esac
3602         target_os_default="win32"
3603         # Use a relative path for TMPDIR. This makes sure all the
3604         # ffconf temp files are written with a relative path, avoiding
3605         # issues with msys/win32 path conversion for MSVC parameters
3606         # such as -Fo<file> or -out:<file>.
3607         TMPDIR=.
3608     ;;
3609     icl)
3610         cc_default="icl"
3611         ld_default="xilink"
3612         nm_default="dumpbin -symbols"
3613         ar_default="xilib"
3614         target_os_default="win32"
3615         TMPDIR=.
3616     ;;
3617     gcov)
3618         add_cflags  -fprofile-arcs -ftest-coverage
3619         add_ldflags -fprofile-arcs -ftest-coverage
3620     ;;
3621     llvm-cov)
3622         add_cflags -fprofile-arcs -ftest-coverage
3623         add_ldflags --coverage
3624     ;;
3625     hardened)
3626         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3627         add_cflags   -fno-strict-overflow -fstack-protector-all
3628         add_ldflags  -Wl,-z,relro -Wl,-z,now
3629         add_cflags   -fPIE
3630         add_ldexeflags -fPIE -pie
3631     ;;
3632     ?*)
3633         die "Unknown toolchain $toolchain"
3634     ;;
3635 esac
3636
3637 test -n "$cross_prefix" && enable cross_compile
3638
3639 if enabled cross_compile; then
3640     test -n "$arch" && test -n "$target_os" ||
3641         die "Must specify target arch and OS when cross-compiling"
3642 fi
3643
3644 ar_default="${cross_prefix}${ar_default}"
3645 cc_default="${cross_prefix}${cc_default}"
3646 cxx_default="${cross_prefix}${cxx_default}"
3647 nm_default="${cross_prefix}${nm_default}"
3648 pkg_config_default="${cross_prefix}${pkg_config_default}"
3649 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3650     ranlib_default="${cross_prefix}${ranlib_default} -D"
3651 else
3652     ranlib_default="${cross_prefix}${ranlib_default}"
3653 fi
3654 strip_default="${cross_prefix}${strip_default}"
3655 windres_default="${cross_prefix}${windres_default}"
3656
3657 sysinclude_default="${sysroot}/usr/include"
3658
3659 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3660     target_exec target_os yasmexe
3661 enabled cross_compile || host_cc_default=$cc
3662 set_default host_cc
3663
3664 pkg_config_fail_message=""
3665 if ! $pkg_config --version >/dev/null 2>&1; then
3666     warn "$pkg_config not found, library detection may fail."
3667     pkg_config=false
3668 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3669     pkg_config_fail_message="
3670 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3671 fi
3672
3673 if test $doxygen != $doxygen_default && \
3674   ! $doxygen --version >/dev/null 2>&1; then
3675     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3676 fi
3677
3678 exesuf() {
3679     case $1 in
3680         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3681     esac
3682 }
3683
3684 EXESUF=$(exesuf $target_os)
3685 HOSTEXESUF=$(exesuf $host_os)
3686
3687 # set temporary file name
3688 : ${TMPDIR:=$TEMPDIR}
3689 : ${TMPDIR:=$TMP}
3690 : ${TMPDIR:=/tmp}
3691
3692 if [ -n "$tempprefix" ] ; then
3693     mktemp(){
3694         echo $tempprefix.${HOSTNAME}.${UID}
3695     }
3696 elif ! check_cmd mktemp -u XXXXXX; then
3697     # simple replacement for missing mktemp
3698     # NOT SAFE FOR GENERAL USE
3699     mktemp(){
3700         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3701     }
3702 fi
3703
3704 tmpfile(){
3705     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3706         (set -C; exec > $tmp) 2>/dev/null ||
3707         die "Unable to create temporary file in $TMPDIR."
3708     append TMPFILES $tmp
3709     eval $1=$tmp
3710 }
3711
3712 trap 'rm -f -- $TMPFILES' EXIT
3713
3714 tmpfile TMPASM .asm
3715 tmpfile TMPC   .c
3716 tmpfile TMPCPP .cpp
3717 tmpfile TMPE   $EXESUF
3718 tmpfile TMPH   .h
3719 tmpfile TMPM   .m
3720 tmpfile TMPO   .o
3721 tmpfile TMPS   .S
3722 tmpfile TMPSH  .sh
3723 tmpfile TMPV   .ver
3724
3725 unset -f mktemp
3726
3727 chmod +x $TMPE
3728
3729 # make sure we can execute files in $TMPDIR
3730 cat > $TMPSH 2>> $logfile <<EOF
3731 #! /bin/sh
3732 EOF
3733 chmod +x $TMPSH >> $logfile 2>&1
3734 if ! $TMPSH >> $logfile 2>&1; then
3735     cat <<EOF
3736 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3737 variable to another directory and make sure that it is not mounted noexec.
3738 EOF
3739     die "Sanity test failed."
3740 fi
3741
3742 armasm_flags(){
3743     for flag; do
3744         case $flag in
3745             # Filter out MSVC cl.exe options from cflags that shouldn't
3746             # be passed to gas-preprocessor
3747             -M[TD]*)                                            ;;
3748             *)                  echo $flag                      ;;
3749         esac
3750    done
3751 }
3752
3753 ccc_flags(){
3754     for flag; do
3755         case $flag in
3756             -std=c99)           echo -c99                       ;;
3757             -mcpu=*)            echo -arch ${flag#*=}           ;;
3758             -mieee)             echo -ieee                      ;;
3759             -O*|-fast)          echo $flag                      ;;
3760             -fno-math-errno)    echo -assume nomath_errno       ;;
3761             -g)                 echo -g3                        ;;
3762             -Wall)              echo -msg_enable level2         ;;
3763             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3764             -Wl,*)              echo $flag                      ;;
3765             -f*|-W*)                                            ;;
3766             *)                  echo $flag                      ;;
3767         esac
3768    done
3769 }
3770
3771 cparser_flags(){
3772     for flag; do
3773         case $flag in
3774             -Wno-switch)             echo -Wno-switch-enum ;;
3775             -Wno-format-zero-length) ;;
3776             -Wdisabled-optimization) ;;
3777             -Wno-pointer-sign)       echo -Wno-other ;;
3778             *)                       echo $flag ;;
3779         esac
3780     done
3781 }
3782
3783 msvc_common_flags(){
3784     for flag; do
3785         case $flag in
3786             # In addition to specifying certain flags under the compiler
3787             # specific filters, they must be specified here as well or else the
3788             # generic catch all at the bottom will print the original flag.
3789             -Wall)                ;;
3790             -std=c99)             ;;
3791             # Common flags
3792             -fomit-frame-pointer) ;;
3793             -g)                   echo -Z7 ;;
3794             -fno-math-errno)      ;;
3795             -fno-common)          ;;
3796             -fno-signed-zeros)    ;;
3797             -fPIC)                ;;
3798             -mthumb)              ;;
3799             -march=*)             ;;
3800             -lz)                  echo zlib.lib ;;
3801             -lavifil32)           echo vfw32.lib ;;
3802             -lavicap32)           echo vfw32.lib user32.lib ;;
3803             -lx264)               echo libx264.lib ;;
3804             -l*)                  echo ${flag#-l}.lib ;;
3805             -LARGEADDRESSAWARE)   echo $flag ;;
3806             -L*)                  echo -libpath:${flag#-L} ;;
3807             *)                    echo $flag ;;
3808         esac
3809     done
3810 }
3811
3812 msvc_flags(){
3813     msvc_common_flags "$@"
3814     for flag; do
3815         case $flag in
3816             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3817                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3818                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3819                                        -wd4307 \
3820                                        -wd4273 -wd4554 -wd4701 ;;
3821         esac
3822     done
3823 }
3824
3825 icl_flags(){
3826     msvc_common_flags "$@"
3827     for flag; do
3828         case $flag in
3829             # Despite what Intel's documentation says -Wall, which is supported
3830             # on Windows, does enable remarks so disable them here.
3831             -Wall)                echo $flag -Qdiag-disable:remark ;;
3832             -std=c99)             echo -Qstd=c99 ;;
3833             -flto)                echo -ipo ;;
3834         esac
3835     done
3836 }
3837
3838 icc_flags(){
3839     for flag; do
3840         case $flag in
3841             -flto)                echo -ipo ;;
3842             *)                    echo $flag ;;
3843         esac
3844     done
3845 }
3846
3847 pgi_flags(){
3848     for flag; do
3849         case $flag in
3850             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3851             -fomit-frame-pointer) echo -Mnoframe ;;
3852             -g)                   echo -gopt ;;
3853             *)                    echo $flag ;;
3854         esac
3855     done
3856 }
3857
3858 suncc_flags(){
3859     for flag; do
3860         case $flag in
3861             -march=*|-mcpu=*)
3862                 case "${flag#*=}" in
3863                     native)                   echo -xtarget=native       ;;
3864                     v9|niagara)               echo -xarch=sparc          ;;
3865                     ultrasparc)               echo -xarch=sparcvis       ;;
3866                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3867                     i586|pentium)             echo -xchip=pentium        ;;
3868                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3869                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3870                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3871                     pentium4*)          echo -xtarget=pentium4           ;;
3872                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3873                     *-sse3)             echo -xarch=sse3                 ;;
3874                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3875                     bonnell)                   echo -xarch=ssse3         ;;
3876                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3877                     westmere)                  echo -xtarget=westmere    ;;
3878                     silvermont)                echo -xarch=sse4_2        ;;
3879                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3880                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3881                                                echo -xarch=avx           ;;
3882                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3883                     btver1)                    echo -xarch=amdsse4a      ;;
3884                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3885                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3886                     k8|opteron|athlon64|athlon-fx)
3887                                                echo -xarch=sse2a         ;;
3888                     athlon*)                   echo -xarch=pentium_proa  ;;
3889                 esac
3890                 ;;
3891             -std=c99)             echo -xc99              ;;
3892             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3893             -fPIC)                echo -KPIC -xcode=pic32 ;;
3894             -W*,*)                echo $flag              ;;
3895             -f*-*|-W*|-mimpure-text)                      ;;
3896             -shared)              echo -G                 ;;
3897             *)                    echo $flag              ;;
3898         esac
3899     done
3900 }
3901
3902 tms470_flags(){
3903     for flag; do
3904         case $flag in
3905             -march=*|-mcpu=*)
3906                 case "${flag#*=}" in
3907                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3908                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3909                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3910                     armv6*|arm11*)          echo -mv=6   ;;
3911                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3912                                             echo -mv=5e  ;;
3913                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3914                 esac
3915                 ;;
3916             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3917             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3918             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3919             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3920             -msoft-float)   echo --float_support=vfplib       ;;
3921             -O[0-3]|-mf=*)  echo $flag                        ;;
3922             -g)             echo -g -mn                       ;;
3923             -pds=*)         echo $flag                        ;;
3924             -D*|-I*)        echo $flag                        ;;
3925             --gcc|--abi=*)  echo $flag                        ;;
3926             -me)            echo $flag                        ;;
3927         esac
3928     done
3929 }
3930
3931 probe_cc(){
3932     pfx=$1
3933     _cc=$2
3934     first=$3
3935
3936     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3937     unset _ld_o _ldflags _ld_lib _ld_path
3938     unset _depflags _DEPCMD _DEPFLAGS
3939     _flags_filter=echo
3940
3941     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3942         true # no-op to avoid reading stdin in following checks
3943     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3944         _type=llvm_gcc
3945         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3946         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3947         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3948         _cflags_speed='-O3'
3949         _cflags_size='-Os'
3950     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3951         _type=gcc
3952         gcc_version=$($_cc --version | head -n1)
3953         gcc_basever=$($_cc -dumpversion)
3954         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3955         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3956         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3957         case $gcc_basever in
3958             2) ;;
3959             2.*) ;;
3960             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3961         esac
3962         if [ "$first" = true ]; then
3963             case $gcc_basever in
3964                 4.2*)
3965                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3966             esac
3967         fi
3968         _cflags_speed='-O3'
3969         _cflags_size='-Os'
3970     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3971         _type=icc
3972         _ident=$($_cc --version | head -n1)
3973         _depflags='-MMD'
3974         _cflags_speed='-O3'
3975         _cflags_size='-Os'
3976         _cflags_noopt='-O1'
3977         _flags_filter=icc_flags
3978     elif $_cc -v 2>&1 | grep -q xlc; then
3979         _type=xlc
3980         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3981         _cflags_speed='-O5'
3982         _cflags_size='-O5 -qcompact'
3983     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3984         _type=ccc
3985         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3986         _DEPFLAGS='-M'
3987         _cflags_speed='-fast'
3988         _cflags_size='-O1'
3989         _flags_filter=ccc_flags
3990     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3991         test -d "$sysroot" || die "No valid sysroot specified."
3992         _type=armcc
3993         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3994         armcc_conf="$PWD/armcc.conf"
3995         $_cc --arm_linux_configure                 \
3996              --arm_linux_config_file="$armcc_conf" \
3997              --configure_sysroot="$sysroot"        \
3998              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3999              die "Error creating armcc configuration file."
4000         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4001         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4002         as_default="${cross_prefix}gcc"
4003         _depflags='-MMD'
4004         _cflags_speed='-O3'
4005         _cflags_size='-Os'
4006     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4007         _type=tms470
4008         _ident=$($_cc -version | head -n1 | tr -s ' ')
4009         _flags='--gcc --abi=eabi -me'
4010         _cc_e='-ppl -fe=$@'
4011         _cc_o='-fe=$@'
4012         _depflags='-ppa -ppd=$(@:.o=.d)'
4013         _cflags_speed='-O3 -mf=5'
4014         _cflags_size='-O3 -mf=2'
4015         _flags_filter=tms470_flags
4016     elif $_cc -v 2>&1 | grep -q clang; then
4017         _type=clang
4018         _ident=$($_cc --version 2>/dev/null | head -n1)
4019         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4020         _cflags_speed='-O3'
4021         _cflags_size='-Os'
4022     elif $_cc -V 2>&1 | grep -q Sun; then
4023         _type=suncc
4024         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4025         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4026         _DEPFLAGS='-xM1 -xc99'
4027         _ldflags='-std=c99'
4028         _cflags_speed='-O5'
4029         _cflags_size='-O5 -xspace'
4030         _flags_filter=suncc_flags
4031     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4032         _type=pathscale
4033         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4034         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4035         _cflags_speed='-O2'
4036         _cflags_size='-Os'
4037         _flags_filter='filter_out -Wdisabled-optimization'
4038     elif $_cc -v 2>&1 | grep -q Open64; then
4039         _type=open64
4040         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4041         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4042         _cflags_speed='-O2'
4043         _cflags_size='-Os'
4044         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4045     elif $_cc -V 2>&1 | grep -q Portland; then
4046         _type=pgi
4047         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4048         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4049         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4050         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4051         _cflags_noopt="-O"
4052         _flags_filter=pgi_flags
4053     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4054         _type=armasm
4055         _ident=$($_cc | head -n1)
4056         # 4509: "This form of conditional instruction is deprecated"
4057         _flags="-nologo -ignore 4509"
4058         _flags_filter=armasm_flags
4059     elif $_cc 2>&1 | grep -q Intel; then
4060         _type=icl
4061         _ident=$($_cc 2>&1 | head -n1)
4062         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4063         # Not only is O3 broken on 13.x+ but it is slower on all previous
4064         # versions (tested) as well.
4065         _cflags_speed="-O2"
4066         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4067         if $_cc 2>&1 | grep -q Linker; then
4068             _ld_o='-out:$@'
4069         else
4070             _ld_o='-Fe$@'
4071         fi
4072         _cc_o='-Fo$@'
4073         _cc_e='-P'
4074         _flags_filter=icl_flags
4075         _ld_lib='lib%.a'
4076         _ld_path='-libpath:'
4077         # -Qdiag-error to make icl error when seeing certain unknown arguments
4078         _flags='-nologo -Qdiag-error:4044,10157'
4079         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4080         # with MSVC which enables it by default.
4081         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4082         disable stripping
4083     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4084         _type=msvc
4085         _ident=$($_cc 2>&1 | head -n1)
4086         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4087         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4088         _cflags_speed="-O2"
4089         _cflags_size="-O1"
4090         if $_cc -nologo- 2>&1 | grep -q Linker; then
4091             _ld_o='-out:$@'
4092         else
4093             _ld_o='-Fe$@'
4094         fi
4095         _cc_o='-Fo$@'
4096         _cc_e='-P -Fi$@'
4097         _flags_filter=msvc_flags
4098         _ld_lib='lib%.a'
4099         _ld_path='-libpath:'
4100         _flags='-nologo'
4101         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4102         disable stripping
4103     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4104         _type=cparser
4105         _ident=$($_cc --version | head -n1)
4106         _depflags='-MMD'
4107         _cflags_speed='-O4'
4108         _cflags_size='-O2'
4109         _flags_filter=cparser_flags
4110     fi
4111
4112     eval ${pfx}_type=\$_type
4113     eval ${pfx}_ident=\$_ident
4114 }
4115
4116 set_ccvars(){
4117     eval ${1}_C=\${_cc_c-\${${1}_C}}
4118     eval ${1}_E=\${_cc_e-\${${1}_E}}
4119     eval ${1}_O=\${_cc_o-\${${1}_O}}
4120
4121     if [ -n "$_depflags" ]; then
4122         eval ${1}_DEPFLAGS=\$_depflags
4123     else
4124         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4125         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4126         eval DEP${1}FLAGS=\$_flags
4127     fi
4128 }
4129
4130 probe_cc cc "$cc" "true"
4131 cflags_filter=$_flags_filter
4132 cflags_speed=$_cflags_speed
4133 cflags_size=$_cflags_size
4134 cflags_noopt=$_cflags_noopt
4135 add_cflags $_flags $_cflags
4136 cc_ldflags=$_ldflags
4137 set_ccvars CC
4138
4139 probe_cc hostcc "$host_cc"
4140 host_cflags_filter=$_flags_filter
4141 add_host_cflags  $_flags $_cflags
4142 set_ccvars HOSTCC
4143
4144 test -n "$cc_type" && enable $cc_type ||
4145     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4146
4147 : ${as_default:=$cc}
4148 : ${objcc_default:=$cc}
4149 : ${dep_cc_default:=$cc}
4150 : ${ld_default:=$cc}
4151 : ${host_ld_default:=$host_cc}
4152 set_default ar as objcc dep_cc ld ln_s host_ld windres
4153
4154 probe_cc as "$as"
4155 asflags_filter=$_flags_filter
4156 add_asflags $_flags $_cflags
4157 set_ccvars AS
4158
4159 probe_cc objcc "$objcc"
4160 objcflags_filter=$_flags_filter
4161 add_objcflags $_flags $_cflags
4162 set_ccvars OBJC
4163
4164 probe_cc ld "$ld"
4165 ldflags_filter=$_flags_filter
4166 add_ldflags $_flags $_ldflags
4167 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4168 LD_O=${_ld_o-$LD_O}
4169 LD_LIB=${_ld_lib-$LD_LIB}
4170 LD_PATH=${_ld_path-$LD_PATH}
4171
4172 probe_cc hostld "$host_ld"
4173 host_ldflags_filter=$_flags_filter
4174 add_host_ldflags $_flags $_ldflags
4175 HOSTLD_O=${_ld_o-$HOSTLD_O}
4176
4177 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4178     probe_cc depcc "$dep_cc"
4179     CCDEP=${_DEPCMD:-$DEPCMD}
4180     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4181     DEPCCFLAGS=$_flags
4182 fi
4183
4184 if $ar 2>&1 | grep -q Microsoft; then
4185     arflags="-nologo"
4186     ar_o='-out:$@'
4187 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4188     arflags="rq"
4189     ar_o='$@'
4190 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4191     arflags='-Xany -r -c'
4192     ar_o='$@'
4193 elif $ar 2>&1 | grep -q "\[D\] "; then
4194     arflags="rcD"
4195     ar_o='$@'
4196 else
4197     arflags="rc"
4198     ar_o='$@'
4199 fi
4200
4201 add_cflags $extra_cflags
4202 add_cxxflags $extra_cxxflags
4203 add_objcflags $extra_objcflags
4204 add_asflags $extra_cflags
4205
4206 if test -n "$sysroot"; then
4207     case "$cc_type" in
4208         gcc|llvm_gcc|clang)
4209             add_cppflags --sysroot="$sysroot"
4210             add_ldflags --sysroot="$sysroot"
4211 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4212             add_cppflags -isysroot "$sysroot"
4213             add_ldflags -isysroot "$sysroot"
4214         ;;
4215         tms470)
4216             add_cppflags -I"$sysinclude"
4217             add_ldflags  --sysroot="$sysroot"
4218         ;;
4219     esac
4220 fi
4221
4222 if test "$cpu" = host; then
4223     enabled cross_compile &&
4224         die "--cpu=host makes no sense when cross-compiling."
4225
4226     case "$cc_type" in
4227         gcc|llvm_gcc)
4228             check_native(){
4229                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4230                 sed -n "/cc1.*$1=/{
4231                             s/.*$1=\\([^ ]*\\).*/\\1/
4232                             p
4233                             q
4234                         }" $TMPE
4235             }
4236             cpu=$(check_native -march || check_native -mcpu)
4237         ;;
4238         clang)
4239             check_native(){
4240                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4241                 sed -n "/cc1.*-target-cpu /{
4242                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4243                             p
4244                             q
4245                         }" $TMPE
4246             }
4247             cpu=$(check_native -march)
4248         ;;
4249     esac
4250
4251     test "${cpu:-host}" = host &&
4252         die "--cpu=host not supported with compiler $cc"
4253 fi
4254
4255 # Deal with common $arch aliases
4256 case "$arch" in
4257     aarch64|arm64)
4258         arch="aarch64"
4259     ;;
4260     arm*|iPad*|iPhone*)
4261         arch="arm"
4262     ;;
4263     mips*|IP*)
4264         case "$arch" in
4265         *el)
4266             add_cppflags -EL
4267             add_ldflags -EL
4268         ;;
4269         *eb)
4270             add_cppflags -EB
4271             add_ldflags -EB
4272         ;;
4273         esac
4274         arch="mips"
4275     ;;
4276     parisc*|hppa*)
4277         arch="parisc"
4278     ;;
4279     "Power Macintosh"|ppc*|powerpc*)
4280         arch="ppc"
4281     ;;
4282     s390|s390x)
4283         arch="s390"
4284     ;;
4285     sh4|sh)
4286         arch="sh4"
4287     ;;
4288     sun4*|sparc*)
4289         arch="sparc"
4290     ;;
4291     tilegx|tile-gx)
4292         arch="tilegx"
4293     ;;
4294     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4295         arch="x86"
4296     ;;
4297 esac
4298
4299 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4300 enable $arch
4301
4302 # Add processor-specific flags
4303 if enabled aarch64; then
4304
4305     case $cpu in
4306         armv*)
4307             cpuflags="-march=$cpu"
4308         ;;
4309         *)
4310             cpuflags="-mcpu=$cpu"
4311         ;;
4312     esac
4313
4314 elif enabled alpha; then
4315
4316     cpuflags="-mcpu=$cpu"
4317
4318 elif enabled arm; then
4319
4320     check_arm_arch() {
4321         check_cpp_condition stddef.h \
4322             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4323             $cpuflags
4324     }
4325
4326     probe_arm_arch() {
4327         if   check_arm_arch 4;        then echo armv4
4328         elif check_arm_arch 4T;       then echo armv4t
4329         elif check_arm_arch 5;        then echo armv5
4330         elif check_arm_arch 5E;       then echo armv5e
4331         elif check_arm_arch 5T;       then echo armv5t
4332         elif check_arm_arch 5TE;      then echo armv5te
4333         elif check_arm_arch 5TEJ;     then echo armv5te
4334         elif check_arm_arch 6;        then echo armv6
4335         elif check_arm_arch 6J;       then echo armv6j
4336         elif check_arm_arch 6K;       then echo armv6k
4337         elif check_arm_arch 6Z;       then echo armv6z
4338         elif check_arm_arch 6ZK;      then echo armv6zk
4339         elif check_arm_arch 6T2;      then echo armv6t2
4340         elif check_arm_arch 7;        then echo armv7
4341         elif check_arm_arch 7A  7_A;  then echo armv7-a
4342         elif check_arm_arch 7S;       then echo armv7-a
4343         elif check_arm_arch 7R  7_R;  then echo armv7-r
4344         elif check_arm_arch 7M  7_M;  then echo armv7-m
4345         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4346         elif check_arm_arch 8A  8_A;  then echo armv8-a
4347         fi
4348     }
4349
4350     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4351
4352     case $cpu in
4353         armv*)
4354             cpuflags="-march=$cpu"
4355             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4356         ;;
4357         *)
4358             cpuflags="-mcpu=$cpu"
4359             case $cpu in
4360                 cortex-a*)                               subarch=armv7a  ;;
4361                 cortex-r*)                               subarch=armv7r  ;;
4362                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4363                 arm11*)                                  subarch=armv6   ;;
4364                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4365                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4366                 *)                             subarch=$(probe_arm_arch) ;;
4367             esac
4368         ;;
4369     esac
4370
4371     case "$subarch" in
4372         armv5t*)    enable fast_clz                ;;
4373         armv[6-8]*)
4374             enable fast_clz
4375             disabled fast_unaligned || enable fast_unaligned
4376             ;;
4377     esac
4378
4379 elif enabled avr32; then
4380
4381     case $cpu in
4382         ap7[02]0[0-2])
4383             subarch="avr32_ap"
4384             cpuflags="-mpart=$cpu"
4385         ;;
4386         ap)
4387             subarch="avr32_ap"
4388             cpuflags="-march=$cpu"
4389         ;;
4390         uc3[ab]*)
4391             subarch="avr32_uc"
4392             cpuflags="-mcpu=$cpu"
4393         ;;
4394         uc)
4395             subarch="avr32_uc"
4396             cpuflags="-march=$cpu"
4397         ;;
4398     esac
4399
4400 elif enabled bfin; then
4401
4402     cpuflags="-mcpu=$cpu"
4403
4404 elif enabled mips; then
4405
4406     cpuflags="-march=$cpu"
4407
4408     if [ "$cpu" != "generic" ]; then
4409         disable mips32r2
4410         disable mips32r5
4411         disable mips64r2
4412         disable mips32r6
4413         disable mips64r6
4414         disable loongson2
4415         disable loongson3
4416
4417         case $cpu in
4418             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4419                 enable mips32r2
4420                 disable msa
4421             ;;
4422             p5600|i6400|p6600)
4423                 disable mipsdsp
4424                 disable mipsdspr2
4425             ;;
4426             loongson*)
4427                 enable loongson2
4428                 enable loongson3
4429                 enable local_aligned_8 local_aligned_16 local_aligned_32
4430                 enable simd_align_16
4431                 enable fast_64bit
4432                 enable fast_clz
4433                 enable fast_cmov
4434                 enable fast_unaligned
4435                 disable aligned_stack
4436                 disable mipsfpu
4437                 disable mipsdsp
4438                 disable mipsdspr2
4439                 case $cpu in
4440                     loongson3*)
4441                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4442                     ;;
4443                     loongson2e)
4444                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4445                     ;;
4446                     loongson2f)
4447                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4448                     ;;
4449                 esac
4450             ;;
4451             *)
4452                 # Unknown CPU. Disable everything.
4453                 warn "unknown CPU. Disabling all MIPS optimizations."
4454                 disable mipsfpu
4455                 disable mipsdsp
4456                 disable mipsdspr2
4457                 disable msa
4458                 disable mmi
4459             ;;
4460         esac
4461
4462         case $cpu in
4463             24kc)
4464                 disable mipsfpu
4465                 disable mipsdsp
4466                 disable mipsdspr2
4467             ;;
4468             24kf*)
4469                 disable mipsdsp
4470                 disable mipsdspr2
4471             ;;
4472             24kec|34kc|1004kc)
4473                 disable mipsfpu
4474                 disable mipsdspr2
4475             ;;
4476             24kef*|34kf*|1004kf*)
4477                 disable mipsdspr2
4478             ;;
4479             74kc)
4480                 disable mipsfpu
4481             ;;
4482             p5600)
4483                 enable mips32r5
4484                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4485             ;;
4486             i6400)
4487                 enable mips64r6
4488                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4489             ;;
4490             p6600)
4491                 enable mips64r6
4492                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4493             ;;
4494         esac
4495     else
4496         # We do not disable anything. Is up to the user to disable the unwanted features.
4497         warn 'generic cpu selected'
4498     fi
4499
4500 elif enabled ppc; then
4501
4502     disable ldbrx
4503
4504     case $(tolower $cpu) in
4505         601|ppc601|powerpc601)
4506             cpuflags="-mcpu=601"
4507             disable altivec
4508         ;;
4509         603*|ppc603*|powerpc603*)
4510             cpuflags="-mcpu=603"
4511             disable altivec
4512         ;;
4513         604*|ppc604*|powerpc604*)
4514             cpuflags="-mcpu=604"
4515             disable altivec
4516         ;;
4517         g3|75*|ppc75*|powerpc75*)
4518             cpuflags="-mcpu=750"
4519             disable altivec
4520         ;;
4521         g4|745*|ppc745*|powerpc745*)
4522             cpuflags="-mcpu=7450"
4523             disable vsx
4524         ;;
4525         74*|ppc74*|powerpc74*)
4526             cpuflags="-mcpu=7400"
4527             disable vsx
4528         ;;
4529         g5|970|ppc970|powerpc970)
4530             cpuflags="-mcpu=970"
4531             disable vsx
4532         ;;
4533         power[3-6]*)
4534             cpuflags="-mcpu=$cpu"
4535             disable vsx
4536         ;;
4537         power[7-8]*)
4538             cpuflags="-mcpu=$cpu"
4539         ;;
4540         cell)
4541             cpuflags="-mcpu=cell"
4542             enable ldbrx
4543             disable vsx
4544         ;;
4545         e500mc)
4546             cpuflags="-mcpu=e500mc"
4547             disable altivec
4548         ;;
4549         e500v2)
4550             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4551             disable altivec
4552             disable dcbzl
4553         ;;
4554         e500)
4555             cpuflags="-mcpu=8540 -mhard-float"
4556             disable altivec
4557             disable dcbzl
4558         ;;
4559     esac
4560
4561 elif enabled sparc; then
4562
4563     case $cpu in
4564         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4565             cpuflags="-mcpu=$cpu"
4566         ;;
4567         ultrasparc*|niagara[234])
4568             cpuflags="-mcpu=$cpu"
4569         ;;
4570     esac
4571
4572 elif enabled x86; then
4573
4574     case $cpu in
4575         i[345]86|pentium)
4576             cpuflags="-march=$cpu"
4577             disable i686
4578             disable mmx
4579         ;;
4580         # targets that do NOT support nopl and conditional mov (cmov)
4581         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4582             cpuflags="-march=$cpu"
4583             disable i686
4584         ;;
4585         # targets that do support nopl and conditional mov (cmov)
4586         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4587         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4588         |amdfam10|barcelona|b[dt]ver*|znver*)
4589             cpuflags="-march=$cpu"
4590             enable i686
4591             enable fast_cmov
4592         ;;
4593         # targets that do support conditional mov but on which it's slow
4594         pentium4|pentium4m|prescott|nocona)
4595             cpuflags="-march=$cpu"
4596             enable i686
4597             disable fast_cmov
4598         ;;
4599     esac
4600
4601 fi
4602
4603 if [ "$cpu" != generic ]; then
4604     add_cflags  $cpuflags
4605     add_asflags $cpuflags
4606     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4607 fi
4608
4609 # compiler sanity check
4610 check_exec <<EOF
4611 int main(void){ return 0; }
4612 EOF
4613 if test "$?" != 0; then
4614     echo "$cc is unable to create an executable file."
4615     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4616         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4617         echo "Only do this if you know what cross compiling means."
4618     fi
4619     die "C compiler test failed."
4620 fi
4621
4622 add_cppflags -D_ISOC99_SOURCE
4623 add_cxxflags -D__STDC_CONSTANT_MACROS
4624 add_cxxflags -std=c++98
4625
4626 # some compilers silently accept -std=c11, so we also need to check that the
4627 # version macro is defined properly
4628 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
4629     add_cflags -std=c11
4630 else
4631     check_cflags -std=c99
4632 fi
4633
4634 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4635 #include <stdlib.h>
4636 EOF
4637 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4638 #include <stdlib.h>
4639 EOF
4640
4641 add_host_cppflags -D_ISOC99_SOURCE
4642 check_host_cflags -std=c99
4643 check_host_cflags -Wall
4644 check_host_cflags -O3
4645
4646 check_64bit(){
4647     arch32=$1
4648     arch64=$2
4649     expr=$3
4650     check_code cc "" "int test[2*($expr) - 1]" &&
4651         subarch=$arch64 || subarch=$arch32
4652 }
4653
4654 case "$arch" in
4655     aarch64|alpha|ia64)
4656         spic=$shared
4657     ;;
4658     mips)
4659         check_64bit mips mips64 '_MIPS_SIM > 1'
4660         spic=$shared
4661     ;;
4662     parisc)
4663         check_64bit parisc parisc64 'sizeof(void *) > 4'
4664         spic=$shared
4665     ;;
4666     ppc)
4667         check_64bit ppc ppc64 'sizeof(void *) > 4'
4668         spic=$shared
4669     ;;
4670     s390)
4671         check_64bit s390 s390x 'sizeof(void *) > 4'
4672         spic=$shared
4673     ;;
4674     sparc)
4675         check_64bit sparc sparc64 'sizeof(void *) > 4'
4676         spic=$shared
4677     ;;
4678     x86)
4679         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4680         # Treat x32 as x64 for now. Note it also needs spic=$shared
4681         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4682             subarch=x86_64
4683         if test "$subarch" = "x86_64"; then
4684             spic=$shared
4685         fi
4686     ;;
4687     ppc)
4688         check_cc <<EOF && subarch="ppc64"
4689         int test[(int)sizeof(char*) - 7];
4690 EOF
4691     ;;
4692 esac
4693
4694 enable $subarch
4695 enabled spic && enable_weak pic
4696
4697 # OS specific
4698 case $target_os in
4699     aix)
4700         SHFLAGS=-shared
4701         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4702         enabled shared && add_ldflags -Wl,-brtl
4703         ;;
4704     android)
4705         disable symver
4706         enable section_data_rel_ro
4707         SLIB_INSTALL_NAME='$(SLIBNAME)'
4708         SLIB_INSTALL_LINKS=
4709         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4710         ;;
4711     haiku)
4712         prefix_default="/boot/common"
4713         network_extralibs="-lnetwork"
4714         host_libs=
4715         ;;
4716     sunos)
4717         SHFLAGS='-shared -Wl,-h,$$(@F)'
4718         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4719         network_extralibs="-lsocket -lnsl"
4720         add_cppflags -D__EXTENSIONS__
4721         # When using suncc to build, the Solaris linker will mark
4722         # an executable with each instruction set encountered by
4723         # the Solaris assembler.  As our libraries contain their own
4724         # guards for processor-specific code, instead suppress
4725         # generation of the HWCAPS ELF section on Solaris x86 only.
4726         enabled_all suncc x86 &&
4727             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4728             add_ldflags -Wl,-M,mapfile
4729         nm_default='nm -P -g'
4730         version_script='-M'
4731         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4732         ;;
4733     netbsd)
4734         disable symver
4735         oss_indev_extralibs="-lossaudio"
4736         oss_outdev_extralibs="-lossaudio"
4737         enabled gcc || check_ldflags -Wl,-zmuldefs
4738         ;;
4739     openbsd|bitrig)
4740         disable symver
4741         SHFLAGS='-shared'
4742         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4743         SLIB_INSTALL_LINKS=
4744         oss_indev_extralibs="-lossaudio"
4745         oss_outdev_extralibs="-lossaudio"
4746         ;;
4747     dragonfly)
4748         disable symver
4749         ;;
4750     freebsd)
4751         ;;
4752     bsd/os)
4753         add_extralibs -lpoll -lgnugetopt
4754         strip="strip -d"
4755         ;;
4756     darwin)
4757         enabled ppc && add_asflags -force_cpusubtype_ALL
4758         install_name_dir_default='$(SHLIBDIR)'
4759         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4760         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4761         strip="${strip} -x"
4762         add_ldflags -Wl,-dynamic,-search_paths_first
4763         SLIBSUF=".dylib"
4764         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4765         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4766         objformat="macho"
4767         enabled x86_64 && objformat="macho64"
4768         enabled_any pic shared x86_64 ||
4769             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4770         check_header dispatch/dispatch.h &&
4771             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4772         version_script='-exported_symbols_list'
4773         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4774         ;;
4775     msys*)
4776         die "Native MSYS builds are discouraged, please use the MINGW environment."
4777         ;;
4778     mingw32*|mingw64*)
4779         if test $target_os = "mingw32ce"; then
4780             disable network
4781         else
4782             target_os=mingw32
4783         fi
4784         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4785         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4786         LIBTARGET=i386
4787         if enabled x86_64; then
4788             LIBTARGET="i386:x86-64"
4789         elif enabled arm; then
4790             LIBTARGET=arm-wince
4791         fi
4792         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4793         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4794         shlibdir_default="$bindir_default"
4795         SLIBPREF=""
4796         SLIBSUF=".dll"
4797         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4798         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4799         dlltool="${cross_prefix}dlltool"
4800         if check_cmd lib.exe -list; then
4801             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4802             if enabled x86_64; then
4803                 LIBTARGET=x64
4804             fi
4805         elif check_cmd $dlltool --version; then
4806             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4807         fi
4808         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4809         SLIB_INSTALL_LINKS=
4810         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4811         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4812         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4813         objformat="win32"
4814         ranlib=:
4815         enable dos_paths
4816         check_ldflags -Wl,--nxcompat,--dynamicbase
4817         # Lets work around some stupidity in binutils.
4818         # ld will strip relocations from executables even though we need them
4819         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4820         # however ld then forgets what the entry point should be (oops) so we
4821         # have to manually (re)set it.
4822         if enabled x86_32; then
4823             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4824         elif enabled x86_64; then
4825             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4826             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4827             # Set image base >4GB for extra entropy with HEASLR
4828             add_ldexeflags -Wl,--image-base,0x140000000
4829             append SHFLAGS -Wl,--image-base,0x180000000
4830         fi
4831         ;;
4832     win32|win64)
4833         disable symver
4834         if enabled shared; then
4835             # Link to the import library instead of the normal static library
4836             # for shared libs.
4837             LD_LIB='%.lib'
4838             # Cannot build both shared and static libs with MSVC or icl.
4839             disable static
4840         fi
4841         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4842         shlibdir_default="$bindir_default"
4843         SLIBPREF=""
4844         SLIBSUF=".dll"
4845         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4846         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4847         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4848         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4849         SLIB_INSTALL_LINKS=
4850         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4851         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4852         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4853         objformat="win32"
4854         ranlib=:
4855         enable dos_paths
4856         ;;
4857     cygwin*)
4858         target_os=cygwin
4859         shlibdir_default="$bindir_default"
4860         SLIBPREF="cyg"
4861         SLIBSUF=".dll"
4862         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4863         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4864         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4865         SLIB_INSTALL_LINKS=
4866         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4867         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4868         objformat="win32"
4869         enable dos_paths
4870         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4871         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4872         ;;
4873     *-dos|freedos|opendos)
4874         network_extralibs="-lsocket"
4875         objformat="coff"
4876         enable dos_paths
4877         add_cppflags -U__STRICT_ANSI__
4878         ;;
4879     linux)
4880         enable dv1394
4881         enable section_data_rel_ro
4882         ;;
4883     irix*)
4884         target_os=irix
4885         ranlib="echo ignoring ranlib"
4886         ;;
4887     os/2*)
4888         strip="lxlite -CS"
4889         objformat="aout"
4890         add_cppflags -D_GNU_SOURCE
4891         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4892         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4893         LIBSUF="_s.a"
4894         SLIBPREF=""
4895         SLIBSUF=".dll"
4896         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4897         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4898         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4899             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4900             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4901             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4902             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4903         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4904             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4905         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4906         SLIB_INSTALL_LINKS=
4907         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4908         enable dos_paths
4909         enable_weak os2threads
4910         ;;
4911     gnu/kfreebsd)
4912         add_cppflags -D_BSD_SOURCE
4913         ;;
4914     gnu)
4915         ;;
4916     qnx)
4917         add_cppflags -D_QNX_SOURCE
4918         network_extralibs="-lsocket"
4919         ;;
4920     symbian)
4921         SLIBSUF=".dll"
4922         enable dos_paths
4923         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4924         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4925         add_ldflags -Wl,--target1-abs,--no-undefined \
4926                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4927                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4928         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4929                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4930                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4931         ;;
4932     osf1)
4933         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4934         ;;
4935     minix)
4936         ;;
4937     plan9)
4938         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4939                      -D_REENTRANT_SOURCE        \
4940                      -D_RESEARCH_SOURCE         \
4941                      -DFD_SETSIZE=96            \
4942                      -DHAVE_SOCK_OPTS
4943         add_compat strtod.o strtod=avpriv_strtod
4944         network_extralibs='-lbsd'
4945         exeobjs=compat/plan9/main.o
4946         disable ffserver
4947         cp_f='cp'
4948         ;;
4949     none)
4950         ;;
4951     *)
4952         die "Unknown OS '$target_os'."
4953         ;;
4954 esac
4955
4956 # test if creating links works
4957 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4958 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4959 mkdir "$link_dest"
4960 $ln_s "$link_dest" "$link_name"
4961 touch "$link_dest/test_file"
4962 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4963     # create link to source path
4964     [ -e src ] && rm src
4965     $ln_s "$source_path" src
4966     source_link=src
4967 else
4968     # creating directory links doesn't work
4969     # fall back to using the full source path
4970     source_link="$source_path"
4971 fi
4972 # cleanup
4973 rm -r "$link_dest"
4974 rm -r "$link_name"
4975
4976 # determine libc flavour
4977
4978 probe_libc(){
4979     pfx=$1
4980     pfx_no_=${pfx%_}
4981     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4982     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4983         eval ${pfx}libc_type=uclibc
4984         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4985     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4986         eval ${pfx}libc_type=glibc
4987         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4988     # MinGW headers can be installed on Cygwin, so check for newlib first.
4989     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4990         eval ${pfx}libc_type=newlib
4991         add_${pfx}cppflags -U__STRICT_ANSI__
4992     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4993     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4994         eval ${pfx}libc_type=mingw64
4995         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4996             add_compat msvcrt/snprintf.o
4997             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4998         fi
4999         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5000         eval test \$${pfx_no_}cc_type = "gcc" &&
5001             add_${pfx}cppflags -D__printf__=__gnu_printf__
5002     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5003          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5004         eval ${pfx}libc_type=mingw32
5005         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5006             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5007             die "ERROR: MinGW32 runtime version must be >= 3.15."
5008         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5009         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5010             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5011         eval test \$${pfx_no_}cc_type = "gcc" &&
5012             add_${pfx}cppflags -D__printf__=__gnu_printf__
5013     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5014         eval ${pfx}libc_type=msvcrt
5015         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5016             if [ "$pfx" = host_ ]; then
5017                 add_host_cppflags -Dsnprintf=_snprintf
5018             else
5019                 add_compat strtod.o strtod=avpriv_strtod
5020                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5021                                              _snprintf=avpriv_snprintf  \
5022                                              vsnprintf=avpriv_vsnprintf
5023             fi
5024         fi
5025         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5026         # 0x601 by default unless something else is set by the user.
5027         # This can easily lead to us detecting functions only present
5028         # in such new versions and producing binaries requiring windows 7.0.
5029         # Therefore explicitly set the default to XP unless the user has
5030         # set something else on the command line.
5031         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5032         # family. For these cases, configure is free to use any functions
5033         # found in the SDK headers by default. (Alternatively, we could force
5034         # _WIN32_WINNT to 0x0602 in that case.)
5035         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5036             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5037 #ifdef WINAPI_FAMILY
5038 #include <winapifamily.h>
5039 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5040 #error not desktop
5041 #endif
5042 #endif
5043 EOF
5044     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5045         eval ${pfx}libc_type=klibc
5046     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5047         eval ${pfx}libc_type=bionic
5048     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5049         eval ${pfx}libc_type=solaris
5050         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5051     fi
5052     check_${pfx}cc <<EOF
5053 #include <time.h>
5054 void *v = localtime_r;
5055 EOF
5056 test "$?" != 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
5057 #include <time.h>
5058 void *v = localtime_r;
5059 EOF
5060
5061 }
5062
5063 probe_libc
5064 test -n "$libc_type" && enable libc_$libc_type
5065 probe_libc host_
5066 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5067
5068 case $libc_type in
5069     bionic)
5070         add_compat strtod.o strtod=avpriv_strtod
5071         ;;
5072 esac
5073
5074 # hacks for compiler/libc/os combinations
5075
5076 if enabled_all tms470 libc_glibc; then
5077     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5078     add_cppflags -D__USER_LABEL_PREFIX__=
5079     add_cppflags -D__builtin_memset=memset
5080     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5081     add_cflags   -pds=48    # incompatible redefinition of macro
5082 fi
5083
5084 if enabled_all ccc libc_glibc; then
5085     add_ldflags -Wl,-z,now  # calls to libots crash without this
5086 fi
5087
5088 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5089     add_cppflags '-I\$(SRC_PATH)/compat/float'
5090
5091 esc(){
5092     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5093 }
5094
5095 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5096
5097 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5098
5099 set_default libdir
5100 : ${shlibdir_default:="$libdir"}
5101 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5102
5103 set_default $PATHS_LIST
5104 set_default nm
5105
5106 # we need to build at least one lib type
5107 if ! enabled_any static shared; then
5108     cat <<EOF
5109 At least one library type must be built.
5110 Specify --enable-static to build the static libraries or --enable-shared to
5111 build the shared libraries as well. To only build the shared libraries specify
5112 --disable-static in addition to --enable-shared.
5113 EOF
5114     exit 1
5115 fi
5116
5117 die_license_disabled() {
5118     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
5119 }
5120
5121 die_license_disabled_gpl() {
5122     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
5123 }
5124
5125 die_license_disabled gpl frei0r
5126 die_license_disabled gpl libcdio
5127 die_license_disabled gpl librubberband
5128 die_license_disabled gpl libsmbclient
5129 die_license_disabled gpl libvidstab
5130 die_license_disabled gpl libx264
5131 die_license_disabled gpl libx265
5132 die_license_disabled gpl libxavs
5133 die_license_disabled gpl libxvid
5134 die_license_disabled gpl x11grab
5135
5136 die_license_disabled nonfree libnpp
5137 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
5138 enabled gpl && die_license_disabled_gpl nonfree openssl
5139
5140 die_license_disabled version3 gmp
5141 die_license_disabled version3 libopencore_amrnb
5142 die_license_disabled version3 libopencore_amrwb
5143 die_license_disabled version3 libsmbclient
5144 die_license_disabled version3 libvo_amrwbenc
5145
5146 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5147
5148 disabled optimizations || check_cflags -fomit-frame-pointer
5149
5150 enable_weak_pic() {
5151     disabled pic && return
5152     enable pic
5153     add_cppflags -DPIC
5154     case "$target_os" in
5155     mingw*|cygwin*)
5156         ;;
5157     *)
5158         add_cflags -fPIC
5159         ;;
5160     esac
5161     add_asflags  -fPIC
5162 }
5163
5164 enabled pic && enable_weak_pic
5165
5166 check_cc <<EOF || die "Symbol mangling check failed."
5167 int ff_extern;
5168 EOF
5169 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5170 extern_prefix=${sym%%ff_extern*}
5171
5172 check_cc <<EOF && enable_weak inline_asm
5173 void foo(void) { __asm__ volatile ("" ::); }
5174 EOF
5175
5176 _restrict=
5177 for restrict_keyword in restrict __restrict__ __restrict; do
5178     check_cc <<EOF && _restrict=$restrict_keyword && break
5179 void foo(char * $restrict_keyword p);
5180 EOF
5181 done
5182
5183 check_cc <<EOF && enable pragma_deprecated
5184 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5185 EOF
5186
5187 check_cc <<EOF && enable attribute_packed
5188 struct { int x; } __attribute__((packed)) x;
5189 EOF
5190
5191 check_cc <<EOF && enable attribute_may_alias
5192 union { int x; } __attribute__((may_alias)) x;
5193 EOF
5194
5195 check_cc <<EOF || die "endian test failed"
5196 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5197 EOF
5198 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5199
5200 if ! enabled ppc64 || enabled bigendian; then
5201     disable vsx
5202 fi
5203
5204 check_gas() {
5205     log "check_gas using '$as' as AS"
5206     # :vararg is used on aarch64, arm and ppc altivec
5207     check_as <<EOF || return 1
5208 .macro m n, y:vararg=0
5209 \n: .int \y
5210 .endm
5211 m x
5212 EOF
5213     # .altmacro is only used in arm asm
5214     ! enabled arm || check_as <<EOF || return 1
5215 .altmacro
5216 EOF
5217     enable gnu_as
5218     return 0
5219 }
5220
5221 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5222     nogas=:
5223     enabled_any arm aarch64 && nogas=die
5224     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5225     as_noop=-v
5226
5227     case $as_type in
5228         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5229         gcc)  gaspp_as_type=gas ;;
5230         *)    gaspp_as_type=$as_type ;;
5231     esac
5232
5233     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5234
5235     test "${as#*gas-preprocessor.pl}" != "$as" ||
5236     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5237         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5238
5239     if ! check_gas ; then
5240         as=${gas:=$as}
5241         check_gas || \
5242             $nogas "GNU assembler not found, install/update gas-preprocessor"
5243     fi
5244
5245     check_as <<EOF && enable as_func
5246 .func test
5247 .endfunc
5248 EOF
5249 fi
5250
5251 check_inline_asm inline_asm_labels '"1:\n"'
5252
5253 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5254
5255 if enabled aarch64; then
5256     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5257     # internal assembler in clang 3.3 does not support this instruction
5258     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5259     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5260
5261     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5262
5263 elif enabled alpha; then
5264
5265     check_cflags -mieee
5266
5267 elif enabled arm; then
5268
5269     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5270
5271     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5272 float func(float a, float b){ return a+b; }
5273 EOF
5274
5275     enabled thumb && check_cflags -mthumb || check_cflags -marm
5276
5277     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5278         enable vfp_args
5279     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5280         enable vfp_args
5281     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5282         case "${cross_prefix:-$cc}" in
5283             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5284             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5285 __asm__ (".eabi_attribute 28, 1");
5286 int main(void) { return 0; }
5287 EOF
5288         esac
5289         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5290     fi
5291
5292     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5293     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5294     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5295     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5296     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5297     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5298     enabled setend  && check_insn setend  'setend be'
5299
5300     [ $target_os = linux ] || [ $target_os = android ] ||
5301         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5302             $ARCH_EXT_LIST_ARM
5303
5304     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5305
5306     check_as <<EOF && enable as_dn_directive
5307 ra .dn d0.i16
5308 .unreq ra
5309 EOF
5310
5311     # llvm's integrated assembler supports .object_arch from llvm 3.5
5312     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5313 .object_arch armv4
5314 EOF
5315
5316     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5317
5318 elif enabled mips; then
5319
5320     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5321     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5322     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5323
5324     # Enable minimum ISA based on selected options
5325     if enabled mips64; then
5326         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5327         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5328         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5329     else
5330         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5331         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5332         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5333         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5334     fi
5335
5336     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5337     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5338     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5339     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5340     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5341
5342 elif enabled parisc; then
5343
5344     if enabled gcc; then
5345         case $($cc -dumpversion) in
5346             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5347         esac
5348     fi
5349
5350 elif enabled ppc; then
5351
5352     enable local_aligned_8 local_aligned_16 local_aligned_32
5353
5354     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5355     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5356     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5357     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5358
5359     # AltiVec flags: The FSF version of GCC differs from the Apple version
5360     if enabled altivec; then
5361         check_cflags -maltivec -mabi=altivec &&
5362         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5363         check_cflags -faltivec
5364
5365         # check if our compiler supports Motorola AltiVec C API
5366         check_cc <<EOF || disable altivec
5367 $inc_altivec_h
5368 int main(void) {
5369     vector signed int v1 = (vector signed int) { 0 };
5370     vector signed int v2 = (vector signed int) { 1 };
5371     v1 = vec_add(v1, v2);
5372     return 0;
5373 }
5374 EOF
5375
5376         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5377     fi
5378
5379     if enabled vsx; then
5380         check_cflags -mvsx &&
5381         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5382     fi
5383
5384     if enabled power8; then
5385         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5386     fi
5387
5388 elif enabled x86; then
5389
5390     check_builtin rdtsc    intrin.h   "__rdtsc()"
5391     check_builtin mm_empty mmintrin.h "_mm_empty()"
5392
5393     enable local_aligned_8 local_aligned_16 local_aligned_32
5394
5395     # check whether EBP is available on x86
5396     # As 'i' is stored on the stack, this program will crash
5397     # if the base pointer is used to access it because the
5398     # base pointer is cleared in the inline assembly code.
5399     check_exec_crash <<EOF && enable ebp_available
5400 volatile int i=0;
5401 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5402 return i;
5403 EOF
5404
5405     # check whether EBX is available on x86
5406     check_inline_asm ebx_available '""::"b"(0)' &&
5407         check_inline_asm ebx_available '"":::"%ebx"'
5408
5409     # check whether xmm clobbers are supported
5410     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5411
5412     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5413         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5414
5415     # check whether binutils is new enough to compile SSSE3/MMXEXT
5416     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5417     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5418
5419     if ! disabled_any asm mmx yasm; then
5420         if check_cmd $yasmexe --version; then
5421             enabled x86_64 && yasm_extra="-m amd64"
5422             yasm_debug="-g dwarf2"
5423         elif check_cmd nasm -v; then
5424             yasmexe=nasm
5425             yasm_debug="-g -F dwarf"
5426             if enabled x86_64; then
5427                 case "$objformat" in
5428                     elf)   objformat=elf64 ;;
5429                     win32) objformat=win64 ;;
5430                 esac
5431             fi
5432         fi
5433
5434         YASMFLAGS="-f $objformat $yasm_extra"
5435         enabled pic               && append YASMFLAGS "-DPIC"
5436         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5437         case "$objformat" in
5438             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5439         esac
5440
5441         check_yasm "movbe ecx, [5]" && enable yasm ||
5442             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5443         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5444         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5445         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5446         check_yasm "CPU amdnop" || disable cpunop
5447     fi
5448
5449     case "$cpu" in
5450         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5451             disable fast_clz
5452         ;;
5453     esac
5454
5455 fi
5456
5457 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5458
5459 check_ldflags -Wl,--as-needed
5460 check_ldflags -Wl,-z,noexecstack
5461
5462 if check_func dlopen && check_func dlsym; then
5463     ldl=
5464 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5465     ldl=-ldl
5466 fi
5467
5468 avisynth_demuxer_extralibs='$ldl'
5469 cuda_extralibs='$ldl'
5470 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5471 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5472 frei0r_filter_extralibs='$ldl'
5473 frei0r_src_filter_extralibs='$ldl'
5474 ladspa_filter_extralibs='$ldl'
5475 nvenc_extralibs='$ldl'
5476 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5477 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5478
5479 if ! disabled network; then
5480     check_func getaddrinfo $network_extralibs
5481     check_func inet_aton $network_extralibs
5482
5483     check_type netdb.h "struct addrinfo"
5484     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5485     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5486     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5487     check_type poll.h "struct pollfd"
5488     check_type netinet/sctp.h "struct sctp_event_subscribe"
5489     check_struct "sys/socket.h" "struct msghdr" msg_flags
5490     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5491     check_type netinet/in.h "struct sockaddr_in6"
5492     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5493     check_type "sys/types.h sys/socket.h" socklen_t
5494
5495     # Prefer arpa/inet.h over winsock2
5496     if check_header arpa/inet.h ; then
5497         check_func closesocket
5498     elif check_header winsock2.h ; then
5499         check_func_headers winsock2.h closesocket -lws2 &&
5500             network_extralibs="-lws2" ||
5501         { check_func_headers winsock2.h closesocket -lws2_32 &&
5502             network_extralibs="-lws2_32"; } || disable winsock2_h network
5503         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5504
5505         check_type ws2tcpip.h socklen_t
5506         check_type ws2tcpip.h "struct addrinfo"
5507         check_type ws2tcpip.h "struct group_source_req"
5508         check_type ws2tcpip.h "struct ip_mreq_source"
5509         check_type ws2tcpip.h "struct ipv6_mreq"
5510         check_type winsock2.h "struct pollfd"
5511         check_struct winsock2.h "struct sockaddr" sa_len
5512         check_type ws2tcpip.h "struct sockaddr_in6"
5513         check_type ws2tcpip.h "struct sockaddr_storage"
5514     else
5515         disable network
5516     fi
5517 fi
5518
5519 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5520 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5521 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5522 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5523 check_builtin sarestart signal.h "SA_RESTART"
5524 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5525 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5526 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5527 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5528 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5529
5530 case "$custom_allocator" in
5531     jemalloc)
5532         # jemalloc by default does not use a prefix
5533         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5534     ;;
5535     tcmalloc)
5536         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5537         malloc_prefix=tc_
5538     ;;
5539 esac
5540
5541 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5542 check_func  ${malloc_prefix}memalign            && enable memalign
5543 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5544
5545 check_func  access
5546 check_func_headers stdlib.h arc4random
5547 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5548 check_func  fcntl
5549 check_func  fork
5550 check_func  gethrtime
5551 check_func  getopt
5552 check_func  getrusage
5553 check_func  gettimeofday
5554 check_func  isatty
5555 check_func  mach_absolute_time
5556 check_func  mkstemp
5557 check_func  mmap
5558 check_func  mprotect
5559 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5560 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5561 check_func  sched_getaffinity
5562 check_func  setrlimit
5563 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5564 check_func  strerror_r
5565 check_func  sysconf
5566 check_func  sysctl
5567 check_func  usleep
5568
5569 check_func_headers conio.h kbhit
5570 check_func_headers io.h setmode
5571 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5572 check_func_headers stdlib.h getenv
5573 check_func_headers sys/stat.h lstat
5574
5575 check_func_headers windows.h CoTaskMemFree -lole32
5576 check_func_headers windows.h GetProcessAffinityMask
5577 check_func_headers windows.h GetProcessTimes
5578 check_func_headers windows.h GetSystemTimeAsFileTime
5579 check_func_headers windows.h LoadLibrary
5580 check_func_headers windows.h MapViewOfFile
5581 check_func_headers windows.h PeekNamedPipe
5582 check_func_headers windows.h SetConsoleTextAttribute
5583 check_func_headers windows.h SetConsoleCtrlHandler
5584 check_func_headers windows.h Sleep
5585 check_func_headers windows.h VirtualAlloc
5586 check_struct windows.h "CONDITION_VARIABLE" Ptr
5587 check_func_headers glob.h glob
5588 enabled xlib &&
5589     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5590
5591 check_header AudioToolbox/AudioToolbox.h
5592 check_header direct.h
5593 check_header dirent.h
5594 check_header dlfcn.h
5595 check_header d3d11.h
5596 check_header dxva.h
5597 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5598 check_header io.h
5599 check_header libcrystalhd/libcrystalhd_if.h
5600 check_header mach/mach_time.h
5601 check_header malloc.h
5602 check_header net/udplite.h
5603 check_header poll.h
5604 check_header sys/mman.h
5605 check_header sys/param.h
5606 check_header sys/resource.h
5607 check_header sys/select.h
5608 check_header sys/time.h
5609 check_header sys/un.h
5610 check_header termios.h
5611 check_header unistd.h
5612 check_header valgrind/valgrind.h
5613 check_header vdpau/vdpau.h
5614 check_header vdpau/vdpau_x11.h
5615 check_header VideoDecodeAcceleration/VDADecoder.h
5616 check_header VideoToolbox/VideoToolbox.h
5617 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5618 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5619 check_header windows.h
5620 check_header X11/extensions/XvMClib.h
5621 check_header asm/types.h
5622
5623 # it seems there are versions of clang in some distros that try to use the
5624 # gcc headers, which explodes for stdatomic
5625 # so we also check that atomics actually work here
5626 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
5627
5628 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5629 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5630 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5631 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5632
5633 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5634
5635 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5636 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5637 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5638 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5639 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5640
5641 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5642 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5643 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5644 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5645 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5646 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5647
5648 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5649
5650 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5651
5652 if ! disabled w32threads && ! enabled pthreads; then
5653     check_func_headers "windows.h process.h" _beginthreadex &&
5654         enable w32threads || disable w32threads
5655     if ! enabled w32threads && enabled winrt; then
5656         check_func_headers "windows.h" CreateThread &&
5657             enable w32threads || disable w32threads
5658     fi
5659 fi
5660
5661 # check for some common methods of building with pthread support
5662 # do this before the optional library checks as some of them require pthreads
5663 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5664     enable pthreads
5665     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5666         add_cflags -pthread
5667         add_extralibs -pthread
5668     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5669         add_cflags -pthreads
5670         add_extralibs -pthreads
5671     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5672         add_cflags -ldl -pthread
5673         add_extralibs -ldl -pthread
5674     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5675         add_extralibs -lpthreadGC2
5676     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5677         :
5678     elif ! check_func pthread_join && ! check_func pthread_create; then
5679         disable pthreads
5680     fi
5681     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5682 fi
5683
5684
5685 if enabled pthreads; then
5686   check_func pthread_cancel
5687 fi
5688
5689 enabled pthreads &&
5690     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5691
5692 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5693 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5694 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5695
5696 check_lib math.h sin -lm && LIBM="-lm"
5697 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5698
5699 atan2f_args=2
5700 copysign_args=2
5701 hypot_args=2
5702 ldexpf_args=2
5703 powf_args=2
5704
5705 for func in $MATH_FUNCS; do
5706     eval check_mathfunc $func \${${func}_args:-1}
5707 done
5708
5709 for func in $COMPLEX_FUNCS; do
5710     eval check_complexfunc $func \${${func}_args:-1}
5711 done
5712
5713 # these are off by default, so fail if requested and not available
5714 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5715 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5716                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5717 enabled cuda              && check_header cuda.h # this is not a dependency
5718 enabled cuvid             && { enabled cuda ||
5719                                die "ERROR: CUVID requires CUDA"; }
5720 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5721 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5722 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5723 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5724                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5725 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5726 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5727 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5728 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5729                                check_lib2 "dlfcn.h" dlopen -ldl; }
5730 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5731 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5732 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5733 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5734 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5735 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5736                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5737                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5738 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5739 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5740                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5741                                  warn "using libfdk without pkg-config"; } }
5742 flite_libs="-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"
5743 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5744 enabled fontconfig        && enable libfontconfig
5745 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5746 enabled libfreetype       && require_libfreetype
5747 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5748 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5749 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5750                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5751                                done || die "ERROR: libgsm not found"; }
5752 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5753 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5754 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5755 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5756 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5757 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5758 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5759 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5760 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5761 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5762                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5763                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5764                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5765 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5766 enabled libopenjpeg       && { { check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5767                                check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5768                                { check_lib2 openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5769                                { check_lib2 openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5770                                { check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5771                                die "ERROR: libopenjpeg not found"; }
5772 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5773 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5774 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5775 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5776 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5777 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5778 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5779 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5780                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5781 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5782 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5783 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5784 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5785 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5786 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5787 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5788                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5789                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5790 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5791 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5792 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5793 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5794
5795 enabled libvpx            && {
5796     enabled libvpx_vp8_decoder && {
5797         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5798             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5799                 die "ERROR: libvpx decoder version must be >=0.9.1";
5800     }
5801     enabled libvpx_vp8_encoder && {
5802         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5803             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5804                 die "ERROR: libvpx encoder version must be >=0.9.7";
5805     }
5806     enabled libvpx_vp9_decoder && {
5807         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5808             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5809                 disable libvpx_vp9_decoder;
5810     }
5811     enabled libvpx_vp9_encoder && {
5812         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5813             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5814                 disable libvpx_vp9_encoder;
5815     }
5816     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5817         die "libvpx enabled but no supported decoders found"
5818     fi
5819 }
5820
5821 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5822 enabled libwebp           && {
5823     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5824     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5825 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5826                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5827                                  warn "using libx264 without pkg-config"; } } &&
5828                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5829                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5830                              { check_cpp_condition x264.h "X264_MPEG2" &&
5831                                enable libx262; }
5832 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5833                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5834                                die "ERROR: libx265 version must be >= 68."; }
5835 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5836 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5837 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5838 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5839 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5840                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5841                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5842 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5843 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5844                                 { ! enabled cross_compile && {
5845                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5846                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5847                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5848                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5849                                die "ERROR: mmal not found"; }
5850 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5851
5852 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5853 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5854                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5855                                die "ERROR: openal not found"; } &&
5856                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5857                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5858 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5859                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5860                                die "ERROR: opencl not found"; } &&
5861                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5862                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5863                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5864 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5865                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5866                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5867                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5868                                die "ERROR: opengl not found."
5869                              }
5870 enabled omx_rpi && enable omx
5871 enabled omx               && { check_header OMX_Core.h ||
5872                                 { ! enabled cross_compile && enabled omx_rpi && {
5873                                     add_cflags -isystem/opt/vc/include/IL ; }
5874                                 check_header OMX_Core.h ; } ||
5875                                die "ERROR: OpenMAX IL headers not found"; }
5876 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5877                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5878                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5879                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5880                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5881                                die "ERROR: openssl not found"; }
5882 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5883
5884 # libdc1394 check
5885 if enabled libdc1394; then
5886     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5887         enable libdc1394_2; } ||
5888     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5889         enable libdc1394_1; } ||
5890     die "ERROR: No version of libdc1394 found "
5891 fi
5892
5893 if enabled gcrypt; then
5894     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5895     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5896         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5897         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5898         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5899             die "ERROR: gcrypt not found"
5900         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5901     else
5902         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5903     fi
5904 fi
5905
5906 disabled sdl && disable sdl2
5907 if ! disabled sdl2; then
5908     SDL2_CONFIG="${cross_prefix}sdl2-config"
5909     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5910         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5911         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5912         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5913     else
5914       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5915         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5916         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5917         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5918         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5919         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5920       fi
5921     fi
5922     if test $target_os = "mingw32"; then
5923         sdl2_libs="$sdl2_libs -mconsole"
5924     fi
5925 fi
5926 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5927
5928 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5929     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5930     enable securetransport; }
5931
5932 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5933                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5934
5935 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5936 enabled makeinfo \
5937     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5938     && enable makeinfo_html || disable makeinfo_html
5939 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5940 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5941 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5942 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5943
5944 check_header linux/fb.h
5945 check_header linux/videodev.h
5946 check_header linux/videodev2.h
5947 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5948
5949 check_header sys/videoio.h
5950 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5951
5952 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5953 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5954 # w32api 3.12 had it defined wrong
5955 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5956
5957 check_type "dshow.h" IBaseFilter
5958
5959 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5960 { check_header dev/bktr/ioctl_meteor.h &&
5961   check_header dev/bktr/ioctl_bt848.h; } ||
5962 { check_header machine/ioctl_meteor.h &&
5963   check_header machine/ioctl_bt848.h; } ||
5964 { check_header dev/video/meteor/ioctl_meteor.h &&
5965   check_header dev/video/bktr/ioctl_bt848.h; } ||
5966 check_header dev/ic/bt8xx.h
5967
5968 check_header sndio.h
5969 if check_struct sys/soundcard.h audio_buf_info bytes; then
5970     enable_safe sys/soundcard.h
5971 else
5972     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5973     #include <sys/soundcard.h>
5974     audio_buf_info abc;
5975 EOF
5976 fi
5977 check_header soundcard.h
5978
5979 enabled_any alsa_indev alsa_outdev &&
5980     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5981
5982 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5983     check_func jack_port_get_latency_range -ljack
5984
5985 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5986
5987 if enabled libcdio; then
5988     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5989     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5990     die "ERROR: No usable libcdio/cdparanoia found"
5991 fi
5992
5993 enabled xlib &&
5994     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5995
5996 if ! disabled libxcb; then
5997     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5998         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5999     } && disable x11grab && enable libxcb
6000
6001 if enabled libxcb; then
6002     disabled libxcb_shm || {
6003         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6004             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6005         } && check_header sys/shm.h && enable libxcb_shm; }
6006
6007     disabled libxcb_xfixes || {
6008         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6009             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6010         } && enable libxcb_xfixes; }
6011
6012     disabled libxcb_shape || {
6013         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6014             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6015         } && enable libxcb_shape; }
6016
6017     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6018     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6019 fi
6020 fi
6021
6022 if enabled x11grab; then
6023     enabled xlib || die "ERROR: Xlib not found"
6024     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
6025     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
6026 fi
6027
6028 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6029
6030 enabled dxva2api_h &&
6031     check_cc <<EOF && enable dxva2api_cobj
6032 #define _WIN32_WINNT 0x0600
6033 #define COBJMACROS
6034 #include <windows.h>
6035 #include <d3d9.h>
6036 #include <dxva2api.h>
6037 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6038 EOF
6039
6040 enabled vaapi &&
6041     check_lib va/va.h vaInitialize -lva ||
6042     disable vaapi
6043
6044 enabled vaapi &&
6045     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6046     disable vaapi
6047
6048 if enabled vaapi ; then
6049     enabled xlib &&
6050     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6051     enable vaapi_x11
6052
6053     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6054     enable vaapi_drm
6055 fi
6056
6057 enabled vdpau &&
6058     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6059     disable vdpau
6060
6061 enabled vdpau && enabled xlib &&
6062     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6063     enable vdpau_x11
6064
6065 if enabled x86; then
6066     case $target_os in
6067         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6068             ;;
6069         *)
6070             disable cuda cuvid nvenc
6071             ;;
6072     esac
6073 else
6074     disable cuda cuvid nvenc
6075 fi
6076
6077 enabled nvenc &&
6078     check_cc -I$source_path <<EOF || disable nvenc
6079 #include "compat/nvenc/nvEncodeAPI.h"
6080 NV_ENCODE_API_FUNCTION_LIST flist;
6081 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6082 int main(void) { return 0; }
6083 EOF
6084
6085 # Funny iconv installations are not unusual, so check it after all flags have been set
6086 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
6087
6088 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6089
6090 # add some useful compiler flags if supported
6091 check_cflags -Wdeclaration-after-statement
6092 check_cflags -Wall
6093 check_cflags -Wdisabled-optimization
6094 check_cflags -Wpointer-arith
6095 check_cflags -Wredundant-decls
6096 check_cflags -Wwrite-strings
6097 check_cflags -Wtype-limits
6098 check_cflags -Wundef
6099 check_cflags -Wmissing-prototypes
6100 check_cflags -Wno-pointer-to-int-cast
6101 check_cflags -Wstrict-prototypes
6102 check_cflags -Wempty-body
6103 enabled extra_warnings && check_cflags -Winline
6104 enabled extra_warnings && check_cflags -Wcast-qual
6105
6106 check_disable_warning(){
6107     warning_flag=-W${1#-Wno-}
6108     test_cflags $warning_flag && add_cflags $1
6109 }
6110
6111 check_disable_warning -Wno-parentheses
6112 check_disable_warning -Wno-switch
6113 check_disable_warning -Wno-format-zero-length
6114 check_disable_warning -Wno-pointer-sign
6115 check_disable_warning -Wno-unused-const-variable
6116
6117 # add some linker flags
6118 check_ldflags -Wl,--warn-common
6119 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6120 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6121 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6122 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6123
6124 # add some strip flags
6125 # -wN '..@*' is more selective than -x, but not available everywhere.
6126 check_stripflags -wN \'..@*\' || check_stripflags -x
6127
6128 enabled neon_clobber_test &&
6129     check_ldflags -Wl,--wrap,avcodec_open2              \
6130                   -Wl,--wrap,avcodec_decode_audio4      \
6131                   -Wl,--wrap,avcodec_decode_video2      \
6132                   -Wl,--wrap,avcodec_decode_subtitle2   \
6133                   -Wl,--wrap,avcodec_encode_audio2      \
6134                   -Wl,--wrap,avcodec_encode_video2      \
6135                   -Wl,--wrap,avcodec_send_packet        \
6136                   -Wl,--wrap,avcodec_receive_frame      \
6137                   -Wl,--wrap,avcodec_send_frame         \
6138                   -Wl,--wrap,avcodec_receive_packet     \
6139                   -Wl,--wrap,avcodec_encode_subtitle    \
6140                   -Wl,--wrap,swr_convert                \
6141                   -Wl,--wrap,avresample_convert ||
6142     disable neon_clobber_test
6143
6144 enabled xmm_clobber_test &&
6145     check_ldflags -Wl,--wrap,avcodec_open2              \
6146                   -Wl,--wrap,avcodec_decode_audio4      \
6147                   -Wl,--wrap,avcodec_decode_video2      \
6148                   -Wl,--wrap,avcodec_decode_subtitle2   \
6149                   -Wl,--wrap,avcodec_encode_audio2      \
6150                   -Wl,--wrap,avcodec_encode_video2      \
6151                   -Wl,--wrap,avcodec_encode_subtitle    \
6152                   -Wl,--wrap,avcodec_send_packet        \
6153                   -Wl,--wrap,avcodec_receive_frame      \
6154                   -Wl,--wrap,avcodec_send_frame         \
6155                   -Wl,--wrap,avcodec_receive_packet     \
6156                   -Wl,--wrap,swr_convert                \
6157                   -Wl,--wrap,avresample_convert         \
6158                   -Wl,--wrap,sws_scale ||
6159     disable xmm_clobber_test
6160
6161 check_ld "cc" <<EOF && enable proper_dce
6162 extern const int array[512];
6163 static inline int func(void) { return array[0]; }
6164 int main(void) { return 0; }
6165 EOF
6166
6167 if enabled proper_dce; then
6168     echo "X { local: *; };" > $TMPV
6169     if test_ldflags -Wl,${version_script},$TMPV; then
6170         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6171         check_cc <<EOF && enable symver_asm_label
6172 void ff_foo(void) __asm__ ("av_foo@VERSION");
6173 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6174 EOF
6175         check_cc <<EOF && enable symver_gnu_asm
6176 __asm__(".symver ff_foo,av_foo@VERSION");
6177 void ff_foo(void) {}
6178 EOF
6179     fi
6180 fi
6181
6182 if [ -z "$optflags" ]; then
6183     if enabled small; then
6184         optflags=$cflags_size
6185     elif enabled optimizations; then
6186         optflags=$cflags_speed
6187     else
6188         optflags=$cflags_noopt
6189     fi
6190 fi
6191
6192 check_optflags(){
6193     check_cflags "$@"
6194     enabled lto && check_ldflags "$@"
6195 }
6196
6197
6198 if enabled lto; then
6199     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6200     check_cflags  -flto
6201     check_ldflags -flto $cpuflags
6202     disable inline_asm_direct_symbol_refs
6203 fi
6204
6205 check_optflags $optflags
6206 check_optflags -fno-math-errno
6207 check_optflags -fno-signed-zeros
6208
6209 enabled ftrapv && check_cflags -ftrapv
6210
6211 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6212 int x;
6213 EOF
6214
6215
6216 if enabled icc; then
6217     # Just warnings, no remarks
6218     check_cflags -w1
6219     # -wd: Disable following warnings
6220     # 144, 167, 556: -Wno-pointer-sign
6221     # 188: enumerated type mixed with another type
6222     # 1292: attribute "foo" ignored
6223     # 1419: external declaration in primary source file
6224     # 10006: ignoring unknown option -fno-signed-zeros
6225     # 10148: ignoring unknown option -Wno-parentheses
6226     # 10156: ignoring option '-W'; no argument required
6227     # 13200: No EMMS instruction before call to function
6228     # 13203: No EMMS instruction before return from function
6229     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6230     # 11030: Warning unknown option --as-needed
6231     # 10156: ignoring option '-export'; no argument required
6232     check_ldflags -wd10156,11030
6233     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6234     enable ebp_available
6235     # The test above does not test linking
6236     enabled lto && disable symver_asm_label
6237     if enabled x86_32; then
6238         icc_version=$($cc -dumpversion)
6239         test ${icc_version%%.*} -ge 11 &&
6240             check_cflags -falign-stack=maintain-16-byte ||
6241             disable aligned_stack
6242     fi
6243 elif enabled ccc; then
6244     # disable some annoying warnings
6245     add_cflags -msg_disable bitnotint
6246     add_cflags -msg_disable mixfuncvoid
6247     add_cflags -msg_disable nonstandcast
6248     add_cflags -msg_disable unsupieee
6249 elif enabled gcc; then
6250     check_optflags -fno-tree-vectorize
6251     check_cflags -Werror=format-security
6252     check_cflags -Werror=implicit-function-declaration
6253     check_cflags -Werror=missing-prototypes
6254     check_cflags -Werror=return-type
6255     check_cflags -Werror=vla
6256     check_cflags -Wformat
6257     check_cflags -fdiagnostics-color=auto
6258     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6259 elif enabled llvm_gcc; then
6260     check_cflags -mllvm -stack-alignment=16
6261 elif enabled clang; then
6262     check_cflags -mllvm -stack-alignment=16
6263     check_cflags -mstack-alignment=16
6264     check_cflags -Qunused-arguments
6265     check_cflags -Werror=implicit-function-declaration
6266     check_cflags -Werror=missing-prototypes
6267     check_cflags -Werror=return-type
6268 elif enabled cparser; then
6269     add_cflags -Wno-missing-variable-declarations
6270     add_cflags -Wno-empty-statement
6271 elif enabled armcc; then
6272     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6273     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6274     # 2523: use of inline assembly is deprecated
6275     add_cflags -W${armcc_opt},--diag_suppress=2523
6276     add_cflags -W${armcc_opt},--diag_suppress=1207
6277     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6278     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6279     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6280     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6281 elif enabled tms470; then
6282     add_cflags -pds=824 -pds=837
6283     disable inline_asm
6284 elif enabled pathscale; then
6285     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6286 elif enabled_any msvc icl; then
6287     enabled x86_32 && disable aligned_stack
6288     enabled_all x86_32 debug && add_cflags -Oy-
6289     enabled debug && add_ldflags -debug
6290     enable pragma_deprecated
6291     if enabled icl; then
6292         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6293         # (correctly) on icl 13.x.
6294         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6295             add_cflags -Qansi-alias
6296         # Some inline asm is not compilable in debug
6297         if enabled debug; then
6298             disable ebp_available
6299             disable ebx_available
6300         fi
6301     fi
6302     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6303     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6304     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6305     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6306     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6307     # MSVC 2013 and newer can handle it fine.
6308     # If this declspec fails, force including stdlib.h before the restrict redefinition
6309     # happens in config.h.
6310     if [ $_restrict != restrict ]; then
6311         check_cc <<EOF || add_cflags -FIstdlib.h
6312 __declspec($_restrict) void* foo(int);
6313 EOF
6314     fi
6315     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6316     check_func strtoull || add_cflags -Dstrtoull=_strtoui64
6317     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6318     # this flag should be re-checked on newer compiler releases and put under a
6319     # version check once its fixed
6320     check_cflags -d2SSAOptimizer-
6321 fi
6322
6323 for pfx in "" host_; do
6324     varname=${pfx%_}cc_type
6325     eval "type=\$$varname"
6326     if [ $type = "msvc" ]; then
6327         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6328 static inline int foo(int a) { return a; }
6329 EOF
6330     fi
6331 done
6332
6333 case $as_type in
6334     clang)
6335         add_asflags -Qunused-arguments
6336     ;;
6337 esac
6338
6339 case $ld_type in
6340     clang)
6341         check_ldflags -Qunused-arguments
6342     ;;
6343 esac
6344
6345 case $target_os in
6346     osf1)
6347         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6348     ;;
6349     plan9)
6350         add_cppflags -Dmain=plan9_main
6351     ;;
6352 esac
6353
6354 enable frame_thread_encoder
6355
6356 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6357
6358 check_deps $CONFIG_LIST       \
6359            $CONFIG_EXTRA      \
6360            $HAVE_LIST         \
6361            $ALL_COMPONENTS    \
6362
6363 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"
6364
6365
6366 if test $target_os = "haiku"; then
6367     disable memalign
6368     disable posix_memalign
6369 fi
6370
6371 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6372     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6373     enable dxva2_lib
6374
6375 ! enabled_any memalign posix_memalign aligned_malloc &&
6376     enabled simd_align_16 && enable memalign_hack
6377
6378 # add_dep lib dep
6379 # -> enable ${lib}_deps_${dep}
6380 # -> add $dep to ${lib}_deps only once
6381 add_dep() {
6382     lib=$1
6383     dep=$2
6384     enabled "${lib}_deps_${dep}" && return 0
6385     enable  "${lib}_deps_${dep}"
6386     prepend "${lib}_deps" $dep
6387 }
6388
6389 # merge deps lib components
6390 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6391 merge_deps() {
6392     lib=$1
6393     shift
6394     for comp in $*; do
6395         enabled $comp || continue
6396         eval "dep=\"\$${comp}_deps\""
6397         for d in $dep; do
6398             add_dep $lib $d
6399         done
6400     done
6401 }
6402
6403 merge_deps libavfilter $FILTER_LIST
6404
6405 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6406
6407 for thread in $THREADS_LIST; do
6408     if enabled $thread; then
6409         test -n "$thread_type" &&
6410             die "ERROR: Only one thread type must be selected." ||
6411             thread_type="$thread"
6412     fi
6413 done
6414
6415 if disabled stdatomic_h; then
6416     if enabled atomics_gcc; then
6417         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6418     elif enabled atomics_win32; then
6419         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6420     elif enabled atomics_suncc; then
6421         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6422     elif enabled pthreads; then
6423         add_compat atomics/pthread/stdatomic.o
6424         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6425     else
6426         enabled threads && die "Threading is enabled, but no atomics are available"
6427         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6428     fi
6429 fi
6430
6431 # Check if requested libraries were found.
6432 for lib in $AUTODETECT_LIBS; do
6433     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6434 done
6435
6436 enabled zlib && add_cppflags -DZLIB_CONST
6437
6438 # conditional library dependencies, in linking order
6439 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6440 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6441 enabled aresample_filter    && prepend avfilter_deps "swresample"
6442 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6443 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6444 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6445 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6446 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6447 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6448 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6449 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6450 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6451 enabled pan_filter          && prepend avfilter_deps "swresample"
6452 enabled pp_filter           && prepend avfilter_deps "postproc"
6453 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6454 enabled resample_filter && prepend avfilter_deps "avresample"
6455 enabled sab_filter          && prepend avfilter_deps "swscale"
6456 enabled scale_filter    && prepend avfilter_deps "swscale"
6457 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6458 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6459 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6460 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6461 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6462 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6463 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6464 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6465 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6466
6467 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6468
6469 enabled opus_decoder    && prepend avcodec_deps "swresample"
6470
6471 expand_deps(){
6472     lib_deps=${1}_deps
6473     eval "deps=\$$lib_deps"
6474     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6475     unique $lib_deps
6476 }
6477
6478 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6479 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6480
6481 map 'expand_deps $v' $LIBRARY_LIST
6482
6483 echo "install prefix            $prefix"
6484 echo "source path               $source_path"
6485 echo "C compiler                $cc"
6486 echo "C library                 $libc_type"
6487 if test "$host_cc" != "$cc"; then
6488     echo "host C compiler           $host_cc"
6489     echo "host C library            $host_libc_type"
6490 fi
6491 echo "ARCH                      $arch ($cpu)"
6492 if test "$build_suffix" != ""; then
6493     echo "build suffix              $build_suffix"
6494 fi
6495 if test "$progs_suffix" != ""; then
6496     echo "progs suffix              $progs_suffix"
6497 fi
6498 if test "$extra_version" != ""; then
6499     echo "version string suffix     $extra_version"
6500 fi
6501 echo "big-endian                ${bigendian-no}"
6502 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6503 if enabled x86; then
6504     echo "${yasmexe}                      ${yasm-no}"
6505     echo "MMX enabled               ${mmx-no}"
6506     echo "MMXEXT enabled            ${mmxext-no}"
6507     echo "3DNow! enabled            ${amd3dnow-no}"
6508     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6509     echo "SSE enabled               ${sse-no}"
6510     echo "SSSE3 enabled             ${ssse3-no}"
6511     echo "AESNI enabled             ${aesni-no}"
6512     echo "AVX enabled               ${avx-no}"
6513     echo "XOP enabled               ${xop-no}"
6514     echo "FMA3 enabled              ${fma3-no}"
6515     echo "FMA4 enabled              ${fma4-no}"
6516     echo "i686 features enabled     ${i686-no}"
6517     echo "CMOV is fast              ${fast_cmov-no}"
6518     echo "EBX available             ${ebx_available-no}"
6519     echo "EBP available             ${ebp_available-no}"
6520 fi
6521 if enabled aarch64; then
6522     echo "NEON enabled              ${neon-no}"
6523     echo "VFP enabled               ${vfp-no}"
6524 fi
6525 if enabled arm; then
6526     echo "ARMv5TE enabled           ${armv5te-no}"
6527     echo "ARMv6 enabled             ${armv6-no}"
6528     echo "ARMv6T2 enabled           ${armv6t2-no}"
6529     echo "VFP enabled               ${vfp-no}"
6530     echo "NEON enabled              ${neon-no}"
6531     echo "THUMB enabled             ${thumb-no}"
6532 fi
6533 if enabled mips; then
6534     echo "MIPS FPU enabled          ${mipsfpu-no}"
6535     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6536     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6537     echo "MIPS MSA enabled          ${msa-no}"
6538     echo "LOONGSON MMI enabled      ${mmi-no}"
6539 fi
6540 if enabled ppc; then
6541     echo "AltiVec enabled           ${altivec-no}"
6542     echo "VSX enabled               ${vsx-no}"
6543     echo "POWER8 enabled            ${power8-no}"
6544     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6545     echo "dcbzl available           ${dcbzl-no}"
6546 fi
6547 echo "debug symbols             ${debug-no}"
6548 echo "strip symbols             ${stripping-no}"
6549 echo "optimize for size         ${small-no}"
6550 echo "optimizations             ${optimizations-no}"
6551 echo "static                    ${static-no}"
6552 echo "shared                    ${shared-no}"
6553 echo "postprocessing support    ${postproc-no}"
6554 echo "new filter support        ${avfilter-no}"
6555 echo "network support           ${network-no}"
6556 echo "threading support         ${thread_type-no}"
6557 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6558 echo "SDL2 support              ${sdl2-no}"
6559 echo "opencl enabled            ${opencl-no}"
6560 echo "JNI support               ${jni-no}"
6561 echo "texi2html enabled         ${texi2html-no}"
6562 echo "perl enabled              ${perl-no}"
6563 echo "pod2man enabled           ${pod2man-no}"
6564 echo "makeinfo enabled          ${makeinfo-no}"
6565 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6566 test -n "$random_seed" &&
6567     echo "random seed               ${random_seed}"
6568 echo
6569
6570 echo "Enabled programs:"
6571 print_enabled '' $PROGRAM_LIST | print_in_columns
6572 echo
6573
6574 echo "External libraries:"
6575 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6576 echo
6577
6578 echo "External libraries providing hardware acceleration:"
6579 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6580 echo
6581
6582 echo "Libraries:"
6583 print_enabled '' $LIBRARY_LIST | print_in_columns
6584 echo
6585
6586 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6587     echo "Enabled ${type}s:"
6588     eval list=\$$(toupper $type)_LIST
6589     print_enabled '_*' $list | print_in_columns
6590     echo
6591 done
6592
6593 license="LGPL version 2.1 or later"
6594 if enabled nonfree; then
6595     license="nonfree and unredistributable"
6596 elif enabled gplv3; then
6597     license="GPL version 3 or later"
6598 elif enabled lgplv3; then
6599     license="LGPL version 3 or later"
6600 elif enabled gpl; then
6601     license="GPL version 2 or later"
6602 fi
6603
6604 echo "License: $license"
6605
6606 echo "Creating config.mak, config.h, and doc/config.texi..."
6607
6608 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6609
6610 enabled stripping || strip="echo skipping strip"
6611
6612 config_files="$TMPH config.mak doc/config.texi"
6613
6614 cat > config.mak <<EOF
6615 # Automatically generated by configure - do not modify!
6616 ifndef FFMPEG_CONFIG_MAK
6617 FFMPEG_CONFIG_MAK=1
6618 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6619 prefix=$prefix
6620 LIBDIR=\$(DESTDIR)$libdir
6621 SHLIBDIR=\$(DESTDIR)$shlibdir
6622 INCDIR=\$(DESTDIR)$incdir
6623 BINDIR=\$(DESTDIR)$bindir
6624 DATADIR=\$(DESTDIR)$datadir
6625 DOCDIR=\$(DESTDIR)$docdir
6626 MANDIR=\$(DESTDIR)$mandir
6627 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6628 INSTALL_NAME_DIR=$install_name_dir
6629 SRC_PATH=$source_path
6630 SRC_LINK=$source_link
6631 ifndef MAIN_MAKEFILE
6632 SRC_PATH:=\$(SRC_PATH:.%=..%)
6633 endif
6634 CC_IDENT=$cc_ident
6635 ARCH=$arch
6636 INTRINSICS=$intrinsics
6637 CC=$cc
6638 CXX=$cxx
6639 AS=$as
6640 OBJCC=$objcc
6641 LD=$ld
6642 DEPCC=$dep_cc
6643 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6644 DEPAS=$as
6645 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6646 YASM=$yasmexe
6647 DEPYASM=$yasmexe
6648 AR=$ar
6649 ARFLAGS=$arflags
6650 AR_O=$ar_o
6651 RANLIB=$ranlib
6652 STRIP=$strip
6653 CP=cp -p
6654 LN_S=$ln_s
6655 CPPFLAGS=$CPPFLAGS
6656 CFLAGS=$CFLAGS
6657 CXXFLAGS=$CXXFLAGS
6658 OBJCFLAGS=$OBJCFLAGS
6659 ASFLAGS=$ASFLAGS
6660 AS_C=$AS_C
6661 AS_O=$AS_O
6662 OBJCC_C=$OBJCC_C
6663 OBJCC_E=$OBJCC_E
6664 OBJCC_O=$OBJCC_O
6665 CC_C=$CC_C
6666 CC_E=$CC_E
6667 CC_O=$CC_O
6668 CXX_C=$CXX_C
6669 CXX_O=$CXX_O
6670 LD_O=$LD_O
6671 LD_LIB=$LD_LIB
6672 LD_PATH=$LD_PATH
6673 DLLTOOL=$dlltool
6674 WINDRES=$windres
6675 DEPWINDRES=$dep_cc
6676 DOXYGEN=$doxygen
6677 LDFLAGS=$LDFLAGS
6678 LDEXEFLAGS=$LDEXEFLAGS
6679 LDLIBFLAGS=$LDLIBFLAGS
6680 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6681 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6682 YASMFLAGS=$YASMFLAGS
6683 BUILDSUF=$build_suffix
6684 PROGSSUF=$progs_suffix
6685 FULLNAME=$FULLNAME
6686 LIBPREF=$LIBPREF
6687 LIBSUF=$LIBSUF
6688 LIBNAME=$LIBNAME
6689 SLIBPREF=$SLIBPREF
6690 SLIBSUF=$SLIBSUF
6691 EXESUF=$EXESUF
6692 EXTRA_VERSION=$extra_version
6693 CCDEP=$CCDEP
6694 CXXDEP=$CXXDEP
6695 CCDEP_FLAGS=$CCDEP_FLAGS
6696 ASDEP=$ASDEP
6697 ASDEP_FLAGS=$ASDEP_FLAGS
6698 CC_DEPFLAGS=$CC_DEPFLAGS
6699 AS_DEPFLAGS=$AS_DEPFLAGS
6700 HOSTCC=$host_cc
6701 HOSTLD=$host_ld
6702 HOSTCFLAGS=$host_cflags
6703 HOSTCPPFLAGS=$host_cppflags
6704 HOSTEXESUF=$HOSTEXESUF
6705 HOSTLDFLAGS=$host_ldflags
6706 HOSTLIBS=$host_libs
6707 DEPHOSTCC=$host_cc
6708 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6709 HOSTCCDEP=$HOSTCCDEP
6710 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6711 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6712 HOSTCC_C=$HOSTCC_C
6713 HOSTCC_O=$HOSTCC_O
6714 HOSTLD_O=$HOSTLD_O
6715 TARGET_EXEC=$target_exec $target_exec_args
6716 TARGET_PATH=$target_path
6717 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6718 CFLAGS-ffplay=${sdl2_cflags}
6719 ZLIB=$($ldflags_filter -lz)
6720 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6721 EXTRALIBS=$extralibs
6722 COMPAT_OBJS=$compat_objs
6723 EXEOBJS=$exeobjs
6724 INSTALL=$install
6725 LIBTARGET=${LIBTARGET}
6726 SLIBNAME=${SLIBNAME}
6727 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6728 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6729 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6730 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6731 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6732 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6733 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6734 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6735 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6736 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6737 NOREDZONE_FLAGS=$noredzone_flags
6738 EOF
6739
6740 get_version(){
6741     lcname=lib${1}
6742     name=$(toupper $lcname)
6743     file=$source_path/$lcname/version.h
6744     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6745     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6746     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6747     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6748     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6749     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6750 }
6751
6752 map 'get_version $v' $LIBRARY_LIST
6753
6754 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6755
6756 print_program_libs(){
6757     eval "program_libs=\$${1}_libs"
6758     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6759 }
6760
6761 map 'print_program_libs $v' $PROGRAM_LIST
6762
6763 cat > $TMPH <<EOF
6764 /* Automatically generated by configure - do not modify! */
6765 #ifndef FFMPEG_CONFIG_H
6766 #define FFMPEG_CONFIG_H
6767 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6768 #define FFMPEG_LICENSE "$(c_escape $license)"
6769 #define CONFIG_THIS_YEAR 2016
6770 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6771 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6772 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6773 #define av_restrict $_restrict
6774 #define EXTERN_PREFIX "${extern_prefix}"
6775 #define EXTERN_ASM ${extern_prefix}
6776 #define BUILDSUF "$build_suffix"
6777 #define SLIBSUF "$SLIBSUF"
6778 #define HAVE_MMX2 HAVE_MMXEXT
6779 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6780 EOF
6781
6782 test -n "$assert_level" &&
6783     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6784
6785 test -n "$malloc_prefix" &&
6786     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6787
6788 if enabled yasm; then
6789     append config_files $TMPASM
6790     printf '' >$TMPASM
6791 fi
6792
6793 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6794
6795
6796 mkdir -p doc
6797 mkdir -p tests
6798 mkdir -p tests/api
6799 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6800
6801 print_config ARCH_   "$config_files" $ARCH_LIST
6802 print_config HAVE_   "$config_files" $HAVE_LIST
6803 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6804                                      $CONFIG_EXTRA      \
6805                                      $ALL_COMPONENTS    \
6806
6807 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6808 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6809
6810 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6811 cp_if_changed $TMPH config.h
6812 touch .config
6813
6814 enabled yasm && cp_if_changed $TMPASM config.asm
6815
6816 cat > $TMPH <<EOF
6817 /* Generated by ffconf */
6818 #ifndef AVUTIL_AVCONFIG_H
6819 #define AVUTIL_AVCONFIG_H
6820 EOF
6821
6822 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6823
6824 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6825
6826 cp_if_changed $TMPH libavutil/avconfig.h
6827
6828 if test -n "$WARNINGS"; then
6829     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6830     enabled fatal_warnings && exit 1
6831 fi
6832
6833 # generate the lists of enabled components
6834 print_enabled_components(){
6835     file=$1
6836     struct_name=$2
6837     name=$3
6838     shift 3
6839     echo "static const $struct_name *$name[] = {" > $TMPH
6840     for c in $*; do
6841         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6842     done
6843     echo "    NULL };" >> $TMPH
6844     cp_if_changed $TMPH $file
6845 }
6846
6847 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6848 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6849
6850 # build pkg-config files
6851
6852 lib_version(){
6853     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6854 }
6855
6856 pkgconfig_generate(){
6857     name=$1
6858     shortname=${name#lib}${build_suffix}
6859     comment=$2
6860     version=$3
6861     libs=$4
6862     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6863     requires=${requires%, }
6864     enabled ${name#lib} || return 0
6865     mkdir -p $name
6866     cat <<EOF > $name/$name${build_suffix}.pc
6867 prefix=$prefix
6868 exec_prefix=\${prefix}
6869 libdir=$libdir
6870 includedir=$incdir
6871
6872 Name: $name
6873 Description: $comment
6874 Version: $version
6875 Requires: $(enabled shared || echo $requires)
6876 Requires.private: $(enabled shared && echo $requires)
6877 Conflicts:
6878 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6879 Libs.private: $(enabled shared && echo $libs)
6880 Cflags: -I\${includedir}
6881 EOF
6882
6883 mkdir -p doc/examples/pc-uninstalled
6884 includedir=${source_path}
6885 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6886     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6887 prefix=
6888 exec_prefix=
6889 libdir=\${pcfiledir}/../../../$name
6890 includedir=${includedir}
6891
6892 Name: $name
6893 Description: $comment
6894 Version: $version
6895 Requires: $requires
6896 Conflicts:
6897 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6898 Cflags: -I\${includedir}
6899 EOF
6900 }
6901
6902 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6903 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6904 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6905 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6906 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6907 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6908 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6909 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6910 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"