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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --enable-raise-major     increase major version numbers in sonames [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188
 189 External library support:
 190
 191   Using any of the following switches will allow FFmpeg to link to the
 192   corresponding external library. All the components depending on that library
 193   will become enabled, if all their other dependencies are met and they are not
 194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 195   libwavpack and allow the libwavpack encoder to be built, unless it is
 196   specifically disabled with --disable-encoder=libwavpack.
 197
 198   Note that only the system libraries are auto-detected. All the other external
 199   libraries must be explicitly enabled.
 200
 201   Also note that the following help text describes the purpose of the libraries
 202   themselves, not all their features will necessarily be usable by FFmpeg.
 203
 204   --enable-avisynth        enable reading of AviSynth script files [no]
 205   --disable-bzlib          disable bzlib [autodetect]
 206   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 207   --enable-frei0r          enable frei0r video filtering [no]
 208   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 209                            if openssl, librtmp or gmp is not used [no]
 210   --enable-gmp             enable gmp, needed for rtmp(t)e support
 211                            if openssl or librtmp is not used [no]
 212   --enable-gnutls          enable gnutls, needed for https support
 213                            if openssl is not used [no]
 214   --disable-iconv          disable iconv [autodetect]
 215   --enable-jni             enable JNI support [no]
 216   --enable-ladspa          enable LADSPA audio filtering [no]
 217   --enable-libass          enable libass subtitles rendering,
 218                            needed for subtitles and ass filter [no]
 219   --enable-libbluray       enable BluRay reading using libbluray [no]
 220   --enable-libbs2b         enable bs2b DSP library [no]
 221   --enable-libcaca         enable textual display using libcaca [no]
 222   --enable-libcelt         enable CELT decoding via libcelt [no]
 223   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 224   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 225                            and libraw1394 [no]
 226   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 227   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 228   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 229   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 230   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 231   --enable-libgme          enable Game Music Emu via libgme [no]
 232   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 233   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 234   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 235   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 236   --enable-libmodplug      enable ModPlug via libmodplug [no]
 237   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 238   --enable-libnut          enable NUT (de)muxing via libnut,
 239                            native (de)muxer exists [no]
 240   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 241   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 242   --enable-libopencv       enable video filtering via libopencv [no]
 243   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 244   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 245   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 246   --enable-libopus         enable Opus de/encoding via libopus [no]
 247   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 248   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 249   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 250   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 251   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 252   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 253   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 254   --enable-libsoxr         enable Include libsoxr resampling [no]
 255   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 256   --enable-libssh          enable SFTP protocol via libssh [no]
 257   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 258   --enable-libtheora       enable Theora encoding via libtheora [no]
 259   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 260   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 261   --enable-libvidstab      enable video stabilization using vid.stab [no]
 262   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 263   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 264                            native implementation exists [no]
 265   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 266   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 267   --enable-libwebp         enable WebP encoding via libwebp [no]
 268   --enable-libx264         enable H.264 encoding via x264 [no]
 269   --enable-libx265         enable HEVC encoding via x265 [no]
 270   --enable-libxavs         enable AVS encoding via xavs [no]
 271   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 272   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 273   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 274   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 275   --enable-libxvid         enable Xvid encoding via xvidcore,
 276                            native MPEG-4/Xvid encoder exists [no]
 277   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 278   --enable-libzmq          enable message passing via libzmq [no]
 279   --enable-libzvbi         enable teletext support via libzvbi [no]
 280   --disable-lzma           disable lzma [autodetect]
 281   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 282   --enable-mediacodec      enable Android MediaCodec support [no]
 283   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 284   --enable-openal          enable OpenAL 1.1 capture support [no]
 285   --enable-opencl          enable OpenCL code
 286   --enable-opengl          enable OpenGL rendering [no]
 287   --enable-openssl         enable openssl, needed for https support
 288                            if gnutls is not used [no]
 289   --disable-schannel       disable SChannel SSP, needed for TLS support on
 290                            Windows if openssl and gnutls are not used [autodetect]
 291   --disable-sdl2           disable sdl2 [autodetect]
 292   --disable-securetransport disable Secure Transport, needed for TLS support
 293                            on OSX if openssl and gnutls are not used [autodetect]
 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   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 376
 377 Optimization options (experts only):
 378   --disable-asm            disable all assembly optimizations
 379   --disable-altivec        disable AltiVec optimizations
 380   --disable-vsx            disable VSX optimizations
 381   --disable-power8         disable POWER8 optimizations
 382   --disable-amd3dnow       disable 3DNow! optimizations
 383   --disable-amd3dnowext    disable 3DNow! extended optimizations
 384   --disable-mmx            disable MMX optimizations
 385   --disable-mmxext         disable MMXEXT optimizations
 386   --disable-sse            disable SSE optimizations
 387   --disable-sse2           disable SSE2 optimizations
 388   --disable-sse3           disable SSE3 optimizations
 389   --disable-ssse3          disable SSSE3 optimizations
 390   --disable-sse4           disable SSE4 optimizations
 391   --disable-sse42          disable SSE4.2 optimizations
 392   --disable-avx            disable AVX optimizations
 393   --disable-xop            disable XOP optimizations
 394   --disable-fma3           disable FMA3 optimizations
 395   --disable-fma4           disable FMA4 optimizations
 396   --disable-avx2           disable AVX2 optimizations
 397   --disable-aesni          disable AESNI optimizations
 398   --disable-armv5te        disable armv5te optimizations
 399   --disable-armv6          disable armv6 optimizations
 400   --disable-armv6t2        disable armv6t2 optimizations
 401   --disable-vfp            disable VFP optimizations
 402   --disable-neon           disable NEON optimizations
 403   --disable-inline-asm     disable use of inline assembly
 404   --disable-yasm           disable use of nasm/yasm assembly
 405   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 406   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 407   --disable-msa            disable MSA optimizations
 408   --disable-mipsfpu        disable floating point MIPS optimizations
 409   --disable-mmi            disable Loongson SIMD optimizations
 410   --disable-fast-unaligned consider unaligned accesses slow
 411
 412 Developer options (useful when working on FFmpeg itself):
 413   --disable-debug          disable debugging symbols
 414   --enable-debug=LEVEL     set the debug level [$debuglevel]
 415   --disable-optimizations  disable compiler optimizations
 416   --enable-extra-warnings  enable more compiler warnings
 417   --disable-stripping      disable stripping of executables and shared libraries
 418   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 419                            2 causes a slowdown at runtime.
 420   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 421   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 422                            leaks and errors, using the specified valgrind binary.
 423                            Cannot be combined with --target-exec
 424   --enable-ftrapv          Trap arithmetic overflows
 425   --samples=PATH           location of test samples for FATE, if not set use
 426                            \$FATE_SAMPLES at make invocation time.
 427   --enable-neon-clobber-test check NEON registers for clobbering (should be
 428                            used only for debugging purposes)
 429   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 430                            should be used only for debugging purposes)
 431   --enable-random          randomly enable/disable components
 432   --disable-random
 433   --enable-random=LIST     randomly enable/disable specific components or
 434   --disable-random=LIST    component groups. LIST is a comma-separated list
 435                            of NAME[:PROB] entries where NAME is a component
 436                            (group) and PROB the probability associated with
 437                            NAME (default 0.5).
 438   --random-seed=VALUE      seed value for --enable/disable-random
 439   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 440                            (only applies to --disable-optimizations builds)
 441
 442 NOTE: Object files are built at the place where configure is launched.
 443 EOF
 444   exit 0
 445 }
 446
 447 quotes='""'
 448 if test -t 1 && which tput >/dev/null 2>&1; then
 449     ncolors=$(tput colors)
 450     if test -n "$ncolors" && test $ncolors -ge 8; then
 451         bold_color=$(tput bold)
 452         warn_color=$(tput setaf 3)
 453         error_color=$(tput setaf 1)
 454         reset_color=$(tput sgr0)
 455     fi
 456     # 72 used instead of 80 since that's the default of pr
 457     ncols=$(tput cols)
 458 fi
 459 : ${ncols:=72}
 460
 461 log(){
 462     echo "$@" >> $logfile
 463 }
 464
 465 log_file(){
 466     log BEGIN $1
 467     pr -n -t $1 >> $logfile
 468     log END $1
 469 }
 470
 471 warn(){
 472     log "WARNING: $*"
 473     WARNINGS="${WARNINGS}WARNING: $*\n"
 474 }
 475
 476 die(){
 477     log "$@"
 478     echo "$error_color$bold_color$@$reset_color"
 479     cat <<EOF
 480
 481 If you think configure made a mistake, make sure you are using the latest
 482 version from Git.  If the latest version fails, report the problem to the
 483 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 484 EOF
 485     if disabled logging; then
 486         cat <<EOF
 487 Rerun configure with logging enabled (do not use --disable-logging), and
 488 include the log this produces with your report.
 489 EOF
 490     else
 491         cat <<EOF
 492 Include the log file "$logfile" produced by configure as this will help
 493 solve the problem.
 494 EOF
 495     fi
 496     exit 1
 497 }
 498
 499 # Avoid locale weirdness, besides we really just want to translate ASCII.
 500 toupper(){
 501     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 502 }
 503
 504 tolower(){
 505     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 506 }
 507
 508 c_escape(){
 509     echo "$*" | sed 's/["\\]/\\\0/g'
 510 }
 511
 512 sh_quote(){
 513     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 514     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 515     echo "$v"
 516 }
 517
 518 cleanws(){
 519     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 520 }
 521
 522 filter(){
 523     pat=$1
 524     shift
 525     for v; do
 526         eval "case $v in $pat) printf '%s ' $v ;; esac"
 527     done
 528 }
 529
 530 filter_out(){
 531     pat=$1
 532     shift
 533     for v; do
 534         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 535     done
 536 }
 537
 538 map(){
 539     m=$1
 540     shift
 541     for v; do eval $m; done
 542 }
 543
 544 add_suffix(){
 545     suffix=$1
 546     shift
 547     for v; do echo ${v}${suffix}; done
 548 }
 549
 550 set_all(){
 551     value=$1
 552     shift
 553     for var in $*; do
 554         eval $var=$value
 555     done
 556 }
 557
 558 set_weak(){
 559     value=$1
 560     shift
 561     for var; do
 562         eval : \${$var:=$value}
 563     done
 564 }
 565
 566 sanitize_var_name(){
 567     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 568 }
 569
 570 set_safe(){
 571     var=$1
 572     shift
 573     eval $(sanitize_var_name "$var")='$*'
 574 }
 575
 576 get_safe(){
 577     eval echo \$$(sanitize_var_name "$1")
 578 }
 579
 580 pushvar(){
 581     for pvar in $*; do
 582         eval level=\${${pvar}_level:=0}
 583         eval ${pvar}_${level}="\$$pvar"
 584         eval ${pvar}_level=$(($level+1))
 585     done
 586 }
 587
 588 popvar(){
 589     for pvar in $*; do
 590         eval level=\${${pvar}_level:-0}
 591         test $level = 0 && continue
 592         eval level=$(($level-1))
 593         eval $pvar="\${${pvar}_${level}}"
 594         eval ${pvar}_level=$level
 595         eval unset ${pvar}_${level}
 596     done
 597 }
 598
 599 request(){
 600     for var in $*; do
 601         eval ${var}_requested=yes
 602         eval $var=
 603     done
 604 }
 605
 606 enable(){
 607     set_all yes $*
 608 }
 609
 610 disable(){
 611     set_all no $*
 612 }
 613
 614 enable_weak(){
 615     set_weak yes $*
 616 }
 617
 618 disable_weak(){
 619     set_weak no $*
 620 }
 621
 622 enable_safe(){
 623     for var; do
 624         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 625     done
 626 }
 627
 628 disable_safe(){
 629     for var; do
 630         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 631     done
 632 }
 633
 634 do_enable_deep(){
 635     for var; do
 636         enabled $var && continue
 637         eval sel="\$${var}_select"
 638         eval sgs="\$${var}_suggest"
 639         pushvar var sgs
 640         enable_deep $sel
 641         popvar sgs
 642         enable_deep_weak $sgs
 643         popvar var
 644     done
 645 }
 646
 647 enable_deep(){
 648     do_enable_deep $*
 649     enable $*
 650 }
 651
 652 enable_deep_weak(){
 653     for var; do
 654         disabled $var && continue
 655         pushvar var
 656         do_enable_deep $var
 657         popvar var
 658         enable_weak $var
 659     done
 660 }
 661
 662 requested(){
 663     test "${1#!}" = "$1" && op='=' || op=!=
 664     eval test "x\$${1#!}_requested" $op "xyes"
 665 }
 666
 667 enabled(){
 668     test "${1#!}" = "$1" && op='=' || op=!=
 669     eval test "x\$${1#!}" $op "xyes"
 670 }
 671
 672 disabled(){
 673     test "${1#!}" = "$1" && op='=' || op=!=
 674     eval test "x\$${1#!}" $op "xno"
 675 }
 676
 677 enabled_all(){
 678     for opt; do
 679         enabled $opt || return 1
 680     done
 681 }
 682
 683 disabled_all(){
 684     for opt; do
 685         disabled $opt || return 1
 686     done
 687 }
 688
 689 enabled_any(){
 690     for opt; do
 691         enabled $opt && return 0
 692     done
 693 }
 694
 695 disabled_any(){
 696     for opt; do
 697         disabled $opt && return 0
 698     done
 699     return 1
 700 }
 701
 702 set_default(){
 703     for opt; do
 704         eval : \${$opt:=\$${opt}_default}
 705     done
 706 }
 707
 708 is_in(){
 709     value=$1
 710     shift
 711     for var in $*; do
 712         [ $var = $value ] && return 0
 713     done
 714     return 1
 715 }
 716
 717 do_check_deps(){
 718     for cfg; do
 719         cfg="${cfg#!}"
 720         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 721         disabled ${cfg}_checking && continue
 722         enable ${cfg}_checking
 723         append allopts $cfg
 724
 725         eval dep_all="\$${cfg}_deps"
 726         eval dep_any="\$${cfg}_deps_any"
 727         eval dep_sel="\$${cfg}_select"
 728         eval dep_sgs="\$${cfg}_suggest"
 729         eval dep_ifa="\$${cfg}_if"
 730         eval dep_ifn="\$${cfg}_if_any"
 731
 732         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 733         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 734         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 735
 736         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 737         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 738         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 739         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 740         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 741
 742         if enabled $cfg; then
 743             enable_deep $dep_sel
 744             enable_deep_weak $dep_sgs
 745         fi
 746
 747         disable ${cfg}_checking
 748     done
 749 }
 750
 751 check_deps(){
 752     unset allopts
 753
 754     do_check_deps "$@"
 755
 756     for cfg in $allopts; do
 757         enabled $cfg || continue
 758         eval dep_extralibs="\$${cfg}_extralibs"
 759         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 760     done
 761 }
 762
 763 print_config(){
 764     pfx=$1
 765     files=$2
 766     shift 2
 767     map 'eval echo "$v \${$v:-no}"' "$@" |
 768     awk "BEGIN { split(\"$files\", files) }
 769         {
 770             c = \"$pfx\" toupper(\$1);
 771             v = \$2;
 772             sub(/yes/, 1, v);
 773             sub(/no/,  0, v);
 774             for (f in files) {
 775                 file = files[f];
 776                 if (file ~ /\\.h\$/) {
 777                     printf(\"#define %s %d\\n\", c, v) >>file;
 778                 } else if (file ~ /\\.asm\$/) {
 779                     printf(\"%%define %s %d\\n\", c, v) >>file;
 780                 } else if (file ~ /\\.mak\$/) {
 781                     n = -v ? \"\" : \"!\";
 782                     printf(\"%s%s=yes\\n\", n, c) >>file;
 783                 } else if (file ~ /\\.texi\$/) {
 784                     pre = -v ? \"\" : \"@c \";
 785                     yesno = \$2;
 786                     c2 = tolower(c);
 787                     gsub(/_/, \"-\", c2);
 788                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 789                 }
 790             }
 791         }"
 792 }
 793
 794 print_enabled(){
 795     suf=$1
 796     shift
 797     for v; do
 798         enabled $v && printf "%s\n" ${v%$suf}
 799     done
 800 }
 801
 802 append(){
 803     var=$1
 804     shift
 805     eval "$var=\"\$$var $*\""
 806 }
 807
 808 prepend(){
 809     var=$1
 810     shift
 811     eval "$var=\"$* \$$var\""
 812 }
 813
 814 unique(){
 815     var=$1
 816     uniq_list=""
 817     for tok in $(eval echo \$$var); do
 818         uniq_list="$(filter_out $tok $uniq_list) $tok"
 819     done
 820     eval "$var=\"${uniq_list}\""
 821 }
 822
 823 add_cppflags(){
 824     append CPPFLAGS "$@"
 825 }
 826
 827 add_cflags(){
 828     append CFLAGS $($cflags_filter "$@")
 829 }
 830
 831 add_cflags_headers(){
 832     append CFLAGS_HEADERS $($cflags_filter "$@")
 833 }
 834
 835 add_cxxflags(){
 836     append CXXFLAGS $($cflags_filter "$@")
 837 }
 838
 839 add_asflags(){
 840     append ASFLAGS $($asflags_filter "$@")
 841 }
 842
 843 add_objcflags(){
 844     append OBJCFLAGS $($objcflags_filter "$@")
 845 }
 846
 847 add_ldflags(){
 848     append LDFLAGS $($ldflags_filter "$@")
 849 }
 850
 851 add_ldexeflags(){
 852     append LDEXEFLAGS $($ldflags_filter "$@")
 853 }
 854
 855 add_ldlibflags(){
 856     append LDLIBFLAGS $($ldflags_filter "$@")
 857 }
 858
 859 add_stripflags(){
 860     append ASMSTRIPFLAGS "$@"
 861 }
 862
 863 add_extralibs(){
 864     prepend extralibs $($ldflags_filter "$@")
 865 }
 866
 867 add_host_cppflags(){
 868     append host_cppflags "$@"
 869 }
 870
 871 add_host_cflags(){
 872     append host_cflags $($host_cflags_filter "$@")
 873 }
 874
 875 add_host_ldflags(){
 876     append host_ldflags $($host_ldflags_filter "$@")
 877 }
 878
 879 add_compat(){
 880     append compat_objs $1
 881     shift
 882     map 'add_cppflags -D$v' "$@"
 883 }
 884
 885 check_cmd(){
 886     log "$@"
 887     "$@" >> $logfile 2>&1
 888 }
 889
 890 check_stat(){
 891     log check_stat "$@"
 892     stat "$1" >> $logfile 2>&1
 893 }
 894
 895 cc_o(){
 896     eval printf '%s\\n' $CC_O
 897 }
 898
 899 cc_e(){
 900     eval printf '%s\\n' $CC_E
 901 }
 902
 903 check_cc(){
 904     log check_cc "$@"
 905     cat > $TMPC
 906     log_file $TMPC
 907     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 908 }
 909
 910 check_cxx(){
 911     log check_cxx "$@"
 912     cat > $TMPCPP
 913     log_file $TMPCPP
 914     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 915 }
 916
 917 check_objcc(){
 918     log check_objcc "$@"
 919     cat > $TMPM
 920     log_file $TMPM
 921     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 922 }
 923
 924 check_cpp(){
 925     log check_cpp "$@"
 926     cat > $TMPC
 927     log_file $TMPC
 928     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 929 }
 930
 931 as_o(){
 932     eval printf '%s\\n' $AS_O
 933 }
 934
 935 check_as(){
 936     log check_as "$@"
 937     cat > $TMPS
 938     log_file $TMPS
 939     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 940 }
 941
 942 check_inline_asm(){
 943     log check_inline_asm "$@"
 944     name="$1"
 945     code="$2"
 946     shift 2
 947     disable $name
 948     check_cc "$@" <<EOF && enable $name
 949 void foo(void){ __asm__ volatile($code); }
 950 EOF
 951 }
 952
 953 check_inline_asm_flags(){
 954     log check_inline_asm_flags "$@"
 955     name="$1"
 956     code="$2"
 957     flags=''
 958     shift 2
 959     while [ "$1" != "" ]; do
 960       append flags $1
 961       shift
 962     done;
 963     disable $name
 964     cat > $TMPC <<EOF
 965 void foo(void){ __asm__ volatile($code); }
 966 EOF
 967     log_file $TMPC
 968     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 969     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 970 }
 971
 972 check_insn(){
 973     log check_insn "$@"
 974     check_inline_asm ${1}_inline "\"$2\""
 975     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 976 }
 977
 978 check_yasm(){
 979     log check_yasm "$@"
 980     echo "$1" > $TMPS
 981     log_file $TMPS
 982     shift 1
 983     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 984 }
 985
 986 ld_o(){
 987     eval printf '%s\\n' $LD_O
 988 }
 989
 990 check_ld(){
 991     log check_ld "$@"
 992     type=$1
 993     shift 1
 994     flags=$(filter_out '-l*|*.so' $@)
 995     libs=$(filter '-l*|*.so' $@)
 996     check_$type $($cflags_filter $flags) || return
 997     flags=$($ldflags_filter $flags)
 998     libs=$($ldflags_filter $libs)
 999     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1000 }
1001
1002 print_include(){
1003     hdr=$1
1004     test "${hdr%.h}" = "${hdr}" &&
1005         echo "#include $hdr"    ||
1006         echo "#include <$hdr>"
1007 }
1008
1009 check_code(){
1010     log check_code "$@"
1011     check=$1
1012     headers=$2
1013     code=$3
1014     shift 3
1015     {
1016         for hdr in $headers; do
1017             print_include $hdr
1018         done
1019         echo "int main(void) { $code; return 0; }"
1020     } | check_$check "$@"
1021 }
1022
1023 check_cppflags(){
1024     log check_cppflags "$@"
1025     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1026 int x;
1027 EOF
1028 }
1029
1030 test_cflags(){
1031     log test_cflags "$@"
1032     set -- $($cflags_filter "$@")
1033     check_cc "$@" <<EOF
1034 int x;
1035 EOF
1036 }
1037
1038 check_cflags(){
1039     log check_cflags "$@"
1040     test_cflags "$@" && add_cflags "$@"
1041 }
1042
1043 check_cxxflags(){
1044     log check_cxxflags "$@"
1045     set -- $($cflags_filter "$@")
1046     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1047 int x;
1048 EOF
1049 }
1050
1051 test_objcflags(){
1052     log test_objcflags "$@"
1053     set -- $($objcflags_filter "$@")
1054     check_objcc "$@" <<EOF
1055 int x;
1056 EOF
1057 }
1058
1059 check_objcflags(){
1060     log check_objcflags "$@"
1061     test_objcflags "$@" && add_objcflags "$@"
1062 }
1063
1064 test_ldflags(){
1065     log test_ldflags "$@"
1066     check_ld "cc" "$@" <<EOF
1067 int main(void){ return 0; }
1068 EOF
1069 }
1070
1071 check_ldflags(){
1072     log check_ldflags "$@"
1073     test_ldflags "$@" && add_ldflags "$@"
1074 }
1075
1076 test_stripflags(){
1077     log test_stripflags "$@"
1078     # call check_cc to get a fresh TMPO
1079     check_cc <<EOF
1080 int main(void) { return 0; }
1081 EOF
1082     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1083 }
1084
1085 check_stripflags(){
1086     log check_stripflags "$@"
1087     test_stripflags "$@" && add_stripflags "$@"
1088 }
1089
1090 check_header(){
1091     log check_header "$@"
1092     header=$1
1093     shift
1094     disable_safe $header
1095     check_cpp "$@" <<EOF && enable_safe $header
1096 #include <$header>
1097 int x;
1098 EOF
1099 }
1100
1101 check_header_objcc(){
1102     log check_header_objcc "$@"
1103     rm -f -- "$TMPO"
1104     header=$1
1105     shift
1106     disable_safe $header
1107     {
1108        echo "#include <$header>"
1109        echo "int main(void) { return 0; }"
1110     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1111 }
1112
1113 check_func(){
1114     log check_func "$@"
1115     func=$1
1116     shift
1117     disable $func
1118     check_ld "cc" "$@" <<EOF && enable $func
1119 extern int $func();
1120 int main(void){ $func(); }
1121 EOF
1122 }
1123
1124 check_complexfunc(){
1125     log check_complexfunc "$@"
1126     func=$1
1127     narg=$2
1128     shift 2
1129     test $narg = 2 && args="f, g" || args="f * I"
1130     disable $func
1131     check_ld "cc" "$@" <<EOF && enable $func
1132 #include <complex.h>
1133 #include <math.h>
1134 float foo(complex float f, complex float g) { return $func($args); }
1135 int main(void){ return (int) foo; }
1136 EOF
1137 }
1138
1139 check_mathfunc(){
1140     log check_mathfunc "$@"
1141     func=$1
1142     narg=$2
1143     shift 2
1144     test $narg = 2 && args="f, g" || args="f"
1145     disable $func
1146     check_ld "cc" "$@" <<EOF && enable $func
1147 #include <math.h>
1148 float foo(float f, float g) { return $func($args); }
1149 int main(void){ return (int) foo; }
1150 EOF
1151 }
1152
1153 check_func_headers(){
1154     log check_func_headers "$@"
1155     headers=$1
1156     funcs=$2
1157     shift 2
1158     {
1159         for hdr in $headers; do
1160             print_include $hdr
1161         done
1162         echo "#include <stdint.h>"
1163         for func in $funcs; do
1164             echo "long check_$func(void) { return (long) $func; }"
1165         done
1166         echo "int main(void) { int ret = 0;"
1167         # LTO could optimize out the test functions without this
1168         for func in $funcs; do
1169             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1170         done
1171         echo "return ret; }"
1172     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1173 }
1174
1175 check_class_headers_cpp(){
1176     log check_class_headers_cpp "$@"
1177     headers=$1
1178     classes=$2
1179     shift 2
1180     {
1181         for hdr in $headers; do
1182             echo "#include <$hdr>"
1183         done
1184         echo "int main(void) { "
1185         i=1
1186         for class in $classes; do
1187             echo "$class obj$i;"
1188             i=$(expr $i + 1)
1189         done
1190         echo "return 0; }"
1191     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1192 }
1193
1194 check_cpp_condition(){
1195     log check_cpp_condition "$@"
1196     header=$1
1197     condition=$2
1198     shift 2
1199     check_cpp "$@" <<EOF
1200 #include <$header>
1201 #if !($condition)
1202 #error "unsatisfied condition: $condition"
1203 #endif
1204 EOF
1205 }
1206
1207 test_cflags_cc(){
1208     log test_cflags_cc "$@"
1209     flags=$1
1210     header=$2
1211     condition=$3
1212     shift 3
1213     set -- $($cflags_filter "$flags")
1214     check_cc "$@" <<EOF
1215 #include <$header>
1216 #if !($condition)
1217 #error "unsatisfied condition: $condition"
1218 #endif
1219 EOF
1220 }
1221
1222 check_lib(){
1223     log check_lib "$@"
1224     headers="$1"
1225     funcs="$2"
1226     shift 2
1227     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1228 }
1229
1230 check_lib_cpp(){
1231     log check_lib_cpp "$@"
1232     headers="$1"
1233     classes="$2"
1234     shift 2
1235     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1236 }
1237
1238 check_pkg_config(){
1239     log check_pkg_config "$@"
1240     pkg_version="$1"
1241     pkg="${1%% *}"
1242     headers="$2"
1243     funcs="$3"
1244     shift 3
1245     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1246     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1247     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1248     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1249         set_safe "${pkg}_cflags"    $pkg_cflags &&
1250         set_safe "${pkg}_extralibs" $pkg_libs
1251 }
1252
1253 check_exec(){
1254     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1255 }
1256
1257 check_exec_crash(){
1258     log check_exec_crash "$@"
1259     code=$(cat)
1260
1261     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1262     # are safe but may not be available everywhere.  Thus we use
1263     # raise(SIGTERM) instead.  The check is run in a subshell so we
1264     # can redirect the "Terminated" message from the shell.  SIGBUS
1265     # is not defined by standard C so it is used conditionally.
1266
1267     (check_exec "$@") >> $logfile 2>&1 <<EOF
1268 #include <signal.h>
1269 static void sighandler(int sig){
1270     raise(SIGTERM);
1271 }
1272 int foo(void){
1273     $code
1274 }
1275 int (*func_ptr)(void) = foo;
1276 int main(void){
1277     signal(SIGILL, sighandler);
1278     signal(SIGFPE, sighandler);
1279     signal(SIGSEGV, sighandler);
1280 #ifdef SIGBUS
1281     signal(SIGBUS, sighandler);
1282 #endif
1283     return func_ptr();
1284 }
1285 EOF
1286 }
1287
1288 check_type(){
1289     log check_type "$@"
1290     headers=$1
1291     type=$2
1292     shift 2
1293     disable_safe "$type"
1294     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1295 }
1296
1297 check_struct(){
1298     log check_struct "$@"
1299     headers=$1
1300     struct=$2
1301     member=$3
1302     shift 3
1303     disable_safe "${struct}_${member}"
1304     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1305         enable_safe "${struct}_${member}"
1306 }
1307
1308 check_builtin(){
1309     log check_builtin "$@"
1310     name=$1
1311     headers=$2
1312     builtin=$3
1313     shift 3
1314     disable "$name"
1315     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1316 }
1317
1318 check_compile_assert(){
1319     log check_compile_assert "$@"
1320     name=$1
1321     headers=$2
1322     condition=$3
1323     shift 3
1324     disable "$name"
1325     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1326 }
1327
1328 require(){
1329     log require "$@"
1330     name_version="$1"
1331     headers="$2"
1332     func="$3"
1333     shift 3
1334     check_lib "$headers" $func "$@" || die "ERROR: $name_version not found"
1335 }
1336
1337 require_cpp(){
1338     name="$1"
1339     headers="$2"
1340     classes="$3"
1341     shift 3
1342     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1343 }
1344
1345 use_pkg_config(){
1346     log use_pkg_config "$@"
1347     pkg="$1"
1348     check_pkg_config "$@" || return 1
1349     add_cflags    $(get_safe "${pkg}_cflags")
1350     add_extralibs $(get_safe "${pkg}_extralibs")
1351 }
1352
1353 require_pkg_config(){
1354     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1355 }
1356
1357 hostcc_e(){
1358     eval printf '%s\\n' $HOSTCC_E
1359 }
1360
1361 hostcc_o(){
1362     eval printf '%s\\n' $HOSTCC_O
1363 }
1364
1365 check_host_cc(){
1366     log check_host_cc "$@"
1367     cat > $TMPC
1368     log_file $TMPC
1369     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1370 }
1371
1372 check_host_cpp(){
1373     log check_host_cpp "$@"
1374     cat > $TMPC
1375     log_file $TMPC
1376     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1377 }
1378
1379 check_host_cppflags(){
1380     log check_host_cppflags "$@"
1381     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1382 int x;
1383 EOF
1384 }
1385
1386 check_host_cflags(){
1387     log check_host_cflags "$@"
1388     set -- $($host_cflags_filter "$@")
1389     check_host_cc "$@" <<EOF && append host_cflags "$@"
1390 int x;
1391 EOF
1392 }
1393
1394 check_host_cpp_condition(){
1395     log check_host_cpp_condition "$@"
1396     header=$1
1397     condition=$2
1398     shift 2
1399     check_host_cpp "$@" <<EOF
1400 #include <$header>
1401 #if !($condition)
1402 #error "unsatisfied condition: $condition"
1403 #endif
1404 EOF
1405 }
1406
1407 cp_if_changed(){
1408     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1409     mkdir -p "$(dirname $2)"
1410     cp -f "$1" "$2"
1411 }
1412
1413 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1414 # system-dependent things.
1415
1416 AVCODEC_COMPONENTS="
1417     bsfs
1418     decoders
1419     encoders
1420     hwaccels
1421     parsers
1422 "
1423
1424 AVDEVICE_COMPONENTS="
1425     indevs
1426     outdevs
1427 "
1428 AVFILTER_COMPONENTS="
1429     filters
1430 "
1431 AVFORMAT_COMPONENTS="
1432     demuxers
1433     muxers
1434     protocols
1435 "
1436
1437 AVRESAMPLE_COMPONENTS=""
1438 AVUTIL_COMPONENTS=""
1439
1440 COMPONENT_LIST="
1441     $AVCODEC_COMPONENTS
1442     $AVDEVICE_COMPONENTS
1443     $AVFILTER_COMPONENTS
1444     $AVFORMAT_COMPONENTS
1445     $AVRESAMPLE_COMPONENTS
1446     $AVUTIL_COMPONENTS
1447 "
1448
1449 EXAMPLE_LIST="
1450     avio_dir_cmd_example
1451     avio_reading_example
1452     decode_audio_example
1453     decode_video_example
1454     demuxing_decoding_example
1455     encode_audio_example
1456     encode_video_example
1457     extract_mvs_example
1458     filter_audio_example
1459     filtering_audio_example
1460     filtering_video_example
1461     http_multiclient_example
1462     metadata_example
1463     muxing_example
1464     qsvdec_example
1465     remuxing_example
1466     resampling_audio_example
1467     scaling_video_example
1468     transcode_aac_example
1469     transcoding_example
1470 "
1471 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1472     bzlib
1473     iconv
1474     libxcb
1475     libxcb_shm
1476     libxcb_shape
1477     libxcb_xfixes
1478     lzma
1479     schannel
1480     sdl
1481     sdl2
1482     securetransport
1483     xlib
1484     zlib
1485 "
1486
1487 EXTERNAL_LIBRARY_GPL_LIST="
1488     avisynth
1489     frei0r
1490     libcdio
1491     librubberband
1492     libvidstab
1493     libx264
1494     libx265
1495     libxavs
1496     libxvid
1497 "
1498
1499 EXTERNAL_LIBRARY_NONFREE_LIST="
1500     decklink
1501     libfdk_aac
1502     openssl
1503 "
1504
1505 EXTERNAL_LIBRARY_VERSION3_LIST="
1506     gmp
1507     libopencore_amrnb
1508     libopencore_amrwb
1509     libvo_amrwbenc
1510 "
1511
1512 EXTERNAL_LIBRARY_GPLV3_LIST="
1513     libsmbclient
1514 "
1515
1516 EXTERNAL_LIBRARY_LIST="
1517     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1518     $EXTERNAL_LIBRARY_GPL_LIST
1519     $EXTERNAL_LIBRARY_NONFREE_LIST
1520     $EXTERNAL_LIBRARY_VERSION3_LIST
1521     $EXTERNAL_LIBRARY_GPLV3_LIST
1522     chromaprint
1523     crystalhd
1524     gcrypt
1525     gnutls
1526     jni
1527     ladspa
1528     libass
1529     libbluray
1530     libbs2b
1531     libcaca
1532     libcelt
1533     libdc1394
1534     libflite
1535     libfontconfig
1536     libfreetype
1537     libfribidi
1538     libgme
1539     libgsm
1540     libiec61883
1541     libilbc
1542     libkvazaar
1543     libmodplug
1544     libmp3lame
1545     libnut
1546     libopencv
1547     libopenh264
1548     libopenjpeg
1549     libopenmpt
1550     libopus
1551     libpulse
1552     librtmp
1553     libschroedinger
1554     libshine
1555     libsmbclient
1556     libsnappy
1557     libsoxr
1558     libspeex
1559     libssh
1560     libtesseract
1561     libtheora
1562     libtwolame
1563     libv4l2
1564     libvorbis
1565     libvpx
1566     libwavpack
1567     libwebp
1568     libzimg
1569     libzmq
1570     libzvbi
1571     mediacodec
1572     netcdf
1573     openal
1574     opencl
1575     opengl
1576     videotoolbox
1577 "
1578 HWACCEL_AUTODETECT_LIBRARY_LIST="
1579     audiotoolbox
1580     cuda
1581     cuvid
1582     d3d11va
1583     dxva2
1584     nvenc
1585     vaapi
1586     vda
1587     vdpau
1588     videotoolbox_hwaccel
1589     xvmc
1590 "
1591
1592 HWACCEL_LIBRARY_NONFREE_LIST="
1593     libnpp
1594 "
1595
1596 HWACCEL_LIBRARY_LIST="
1597     $HWACCEL_AUTODETECT_LIBRARY_LIST
1598     $HWACCEL_LIBRARY_NONFREE_LIST
1599     libmfx
1600     mmal
1601     omx
1602 "
1603
1604 DOCUMENT_LIST="
1605     doc
1606     htmlpages
1607     manpages
1608     podpages
1609     txtpages
1610 "
1611
1612 FEATURE_LIST="
1613     ftrapv
1614     gray
1615     hardcoded_tables
1616     omx_rpi
1617     runtime_cpudetect
1618     safe_bitstream_reader
1619     shared
1620     small
1621     static
1622     swscale_alpha
1623 "
1624
1625 LIBRARY_LIST="
1626     avcodec
1627     avdevice
1628     avfilter
1629     avformat
1630     avresample
1631     avutil
1632     postproc
1633     swresample
1634     swscale
1635 "
1636
1637 LICENSE_LIST="
1638     gpl
1639     nonfree
1640     version3
1641 "
1642
1643 PROGRAM_LIST="
1644     ffplay
1645     ffprobe
1646     ffserver
1647     ffmpeg
1648 "
1649
1650 SUBSYSTEM_LIST="
1651     dct
1652     dwt
1653     error_resilience
1654     faan
1655     fast_unaligned
1656     fft
1657     lsp
1658     lzo
1659     mdct
1660     pixelutils
1661     network
1662     rdft
1663 "
1664
1665 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1666 CONFIG_LIST="
1667     $DOCUMENT_LIST
1668     $EXAMPLE_LIST
1669     $EXTERNAL_LIBRARY_LIST
1670     $HWACCEL_LIBRARY_LIST
1671     $FEATURE_LIST
1672     $LICENSE_LIST
1673     $LIBRARY_LIST
1674     $PROGRAM_LIST
1675     $SUBSYSTEM_LIST
1676     fontconfig
1677     memory_poisoning
1678     neon_clobber_test
1679     pic
1680     raise_major
1681     thumb
1682     valgrind_backtrace
1683     xmm_clobber_test
1684     $COMPONENT_LIST
1685 "
1686
1687 THREADS_LIST="
1688     pthreads
1689     os2threads
1690     w32threads
1691 "
1692
1693 ATOMICS_LIST="
1694     atomics_gcc
1695     atomics_suncc
1696     atomics_win32
1697 "
1698
1699 AUTODETECT_LIBS="
1700     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1701     $HWACCEL_AUTODETECT_LIBRARY_LIST
1702     $THREADS_LIST
1703 "
1704
1705 ARCH_LIST="
1706     aarch64
1707     alpha
1708     arm
1709     avr32
1710     avr32_ap
1711     avr32_uc
1712     bfin
1713     ia64
1714     m68k
1715     mips
1716     mips64
1717     parisc
1718     ppc
1719     ppc64
1720     s390
1721     sh4
1722     sparc
1723     sparc64
1724     tilegx
1725     tilepro
1726     tomi
1727     x86
1728     x86_32
1729     x86_64
1730 "
1731
1732 ARCH_EXT_LIST_ARM="
1733     armv5te
1734     armv6
1735     armv6t2
1736     armv8
1737     neon
1738     vfp
1739     vfpv3
1740     setend
1741 "
1742
1743 ARCH_EXT_LIST_MIPS="
1744     mipsfpu
1745     mips32r2
1746     mips32r5
1747     mips64r2
1748     mips32r6
1749     mips64r6
1750     mipsdsp
1751     mipsdspr2
1752     msa
1753 "
1754
1755 ARCH_EXT_LIST_LOONGSON="
1756     loongson2
1757     loongson3
1758     mmi
1759 "
1760
1761 ARCH_EXT_LIST_X86_SIMD="
1762     aesni
1763     amd3dnow
1764     amd3dnowext
1765     avx
1766     avx2
1767     fma3
1768     fma4
1769     mmx
1770     mmxext
1771     sse
1772     sse2
1773     sse3
1774     sse4
1775     sse42
1776     ssse3
1777     xop
1778 "
1779
1780 ARCH_EXT_LIST_PPC="
1781     altivec
1782     dcbzl
1783     ldbrx
1784     power8
1785     ppc4xx
1786     vsx
1787 "
1788
1789 ARCH_EXT_LIST_X86="
1790     $ARCH_EXT_LIST_X86_SIMD
1791     cpunop
1792     i686
1793 "
1794
1795 ARCH_EXT_LIST="
1796     $ARCH_EXT_LIST_ARM
1797     $ARCH_EXT_LIST_PPC
1798     $ARCH_EXT_LIST_X86
1799     $ARCH_EXT_LIST_MIPS
1800     $ARCH_EXT_LIST_LOONGSON
1801 "
1802
1803 ARCH_FEATURES="
1804     aligned_stack
1805     fast_64bit
1806     fast_clz
1807     fast_cmov
1808     local_aligned_8
1809     local_aligned_16
1810     local_aligned_32
1811     simd_align_16
1812     simd_align_32
1813 "
1814
1815 BUILTIN_LIST="
1816     atomic_cas_ptr
1817     machine_rw_barrier
1818     MemoryBarrier
1819     mm_empty
1820     rdtsc
1821     sarestart
1822     sem_timedwait
1823     sync_val_compare_and_swap
1824 "
1825 HAVE_LIST_CMDLINE="
1826     inline_asm
1827     symver
1828     yasm
1829 "
1830
1831 HAVE_LIST_PUB="
1832     bigendian
1833     fast_unaligned
1834 "
1835
1836 HEADERS_LIST="
1837     alsa_asoundlib_h
1838     altivec_h
1839     arpa_inet_h
1840     asm_types_h
1841     cdio_paranoia_h
1842     cdio_paranoia_paranoia_h
1843     cuda_h
1844     dispatch_dispatch_h
1845     dev_bktr_ioctl_bt848_h
1846     dev_bktr_ioctl_meteor_h
1847     dev_ic_bt8xx_h
1848     dev_video_bktr_ioctl_bt848_h
1849     dev_video_meteor_ioctl_meteor_h
1850     direct_h
1851     dirent_h
1852     dlfcn_h
1853     d3d11_h
1854     dxva_h
1855     ES2_gl_h
1856     gsm_h
1857     io_h
1858     mach_mach_time_h
1859     machine_ioctl_bt848_h
1860     machine_ioctl_meteor_h
1861     malloc_h
1862     opencv2_core_core_c_h
1863     openjpeg_2_1_openjpeg_h
1864     openjpeg_2_0_openjpeg_h
1865     openjpeg_1_5_openjpeg_h
1866     OpenGL_gl3_h
1867     poll_h
1868     sndio_h
1869     soundcard_h
1870     stdatomic_h
1871     sys_mman_h
1872     sys_param_h
1873     sys_resource_h
1874     sys_select_h
1875     sys_soundcard_h
1876     sys_time_h
1877     sys_un_h
1878     sys_videoio_h
1879     termios_h
1880     udplite_h
1881     unistd_h
1882     valgrind_valgrind_h
1883     windows_h
1884     winsock2_h
1885 "
1886
1887 INTRINSICS_LIST="
1888     intrinsics_neon
1889 "
1890
1891 COMPLEX_FUNCS="
1892     cabs
1893     cexp
1894 "
1895
1896 MATH_FUNCS="
1897     atanf
1898     atan2f
1899     cbrt
1900     cbrtf
1901     copysign
1902     cosf
1903     erf
1904     exp2
1905     exp2f
1906     expf
1907     hypot
1908     isfinite
1909     isinf
1910     isnan
1911     ldexpf
1912     llrint
1913     llrintf
1914     log2
1915     log2f
1916     log10f
1917     lrint
1918     lrintf
1919     powf
1920     rint
1921     round
1922     roundf
1923     sinf
1924     trunc
1925     truncf
1926 "
1927
1928 SYSTEM_FUNCS="
1929     access
1930     aligned_malloc
1931     arc4random
1932     clock_gettime
1933     closesocket
1934     CommandLineToArgvW
1935     CoTaskMemFree
1936     CryptGenRandom
1937     dlopen
1938     fcntl
1939     flt_lim
1940     fork
1941     getaddrinfo
1942     gethrtime
1943     getopt
1944     GetProcessAffinityMask
1945     GetProcessMemoryInfo
1946     GetProcessTimes
1947     getrusage
1948     GetSystemTimeAsFileTime
1949     gettimeofday
1950     glob
1951     glXGetProcAddress
1952     gmtime_r
1953     inet_aton
1954     isatty
1955     jack_port_get_latency_range
1956     kbhit
1957     LoadLibrary
1958     localtime_r
1959     lstat
1960     lzo1x_999_compress
1961     mach_absolute_time
1962     MapViewOfFile
1963     memalign
1964     mkstemp
1965     mmap
1966     mprotect
1967     nanosleep
1968     PeekNamedPipe
1969     posix_memalign
1970     pthread_cancel
1971     sched_getaffinity
1972     SetConsoleTextAttribute
1973     SetConsoleCtrlHandler
1974     setmode
1975     setrlimit
1976     Sleep
1977     strerror_r
1978     sysconf
1979     sysctl
1980     usleep
1981     UTGetOSTypeFromString
1982     VirtualAlloc
1983     wglGetProcAddress
1984 "
1985
1986 TOOLCHAIN_FEATURES="
1987     as_dn_directive
1988     as_fpu_directive
1989     as_func
1990     as_object_arch
1991     asm_mod_q
1992     attribute_may_alias
1993     attribute_packed
1994     ebp_available
1995     ebx_available
1996     gnu_as
1997     gnu_windres
1998     ibm_asm
1999     inline_asm_direct_symbol_refs
2000     inline_asm_labels
2001     inline_asm_nonlocal_labels
2002     pragma_deprecated
2003     rsync_contimeout
2004     symver_asm_label
2005     symver_gnu_asm
2006     vfp_args
2007     xform_asm
2008     xmm_clobbers
2009 "
2010
2011 TYPES_LIST="
2012     CONDITION_VARIABLE_Ptr
2013     socklen_t
2014     struct_addrinfo
2015     struct_group_source_req
2016     struct_ip_mreq_source
2017     struct_ipv6_mreq
2018     struct_msghdr_msg_flags
2019     struct_pollfd
2020     struct_rusage_ru_maxrss
2021     struct_sctp_event_subscribe
2022     struct_sockaddr_in6
2023     struct_sockaddr_sa_len
2024     struct_sockaddr_storage
2025     struct_stat_st_mtim_tv_nsec
2026     struct_v4l2_frmivalenum_discrete
2027 "
2028
2029 HAVE_LIST="
2030     $ARCH_EXT_LIST
2031     $(add_suffix _external $ARCH_EXT_LIST)
2032     $(add_suffix _inline   $ARCH_EXT_LIST)
2033     $ARCH_FEATURES
2034     $ATOMICS_LIST
2035     $BUILTIN_LIST
2036     $COMPLEX_FUNCS
2037     $HAVE_LIST_CMDLINE
2038     $HAVE_LIST_PUB
2039     $HEADERS_LIST
2040     $INTRINSICS_LIST
2041     $MATH_FUNCS
2042     $SYSTEM_FUNCS
2043     $THREADS_LIST
2044     $TOOLCHAIN_FEATURES
2045     $TYPES_LIST
2046     alsa
2047     atomics_native
2048     dos_paths
2049     dxva2_lib
2050     dxva2api_cobj
2051     jack
2052     libc_msvcrt
2053     makeinfo
2054     makeinfo_html
2055     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2056     perl
2057     pod2man
2058     sdl2
2059     section_data_rel_ro
2060     sndio
2061     texi2html
2062     threads
2063     vaapi_drm
2064     vaapi_x11
2065     vdpau_x11
2066     winrt
2067 "
2068
2069 # options emitted with CONFIG_ prefix but not available on the command line
2070 CONFIG_EXTRA="
2071     aandcttables
2072     ac3dsp
2073     audio_frame_queue
2074     audiodsp
2075     blockdsp
2076     bswapdsp
2077     cabac
2078     dirac_parse
2079     dvprofile
2080     exif
2081     faandct
2082     faanidct
2083     fdctdsp
2084     flacdsp
2085     fmtconvert
2086     frame_thread_encoder
2087     g722dsp
2088     golomb
2089     gplv3
2090     h263dsp
2091     h264chroma
2092     h264dsp
2093     h264parse
2094     h264pred
2095     h264qpel
2096     hevcparse
2097     hpeldsp
2098     huffman
2099     huffyuvdsp
2100     huffyuvencdsp
2101     idctdsp
2102     iirfilter
2103     mdct15
2104     intrax8
2105     iso_media
2106     ividsp
2107     jpegtables
2108     lgplv3
2109     libx262
2110     llauddsp
2111     llviddsp
2112     llvidencdsp
2113     lpc
2114     lzf
2115     me_cmp
2116     mpeg_er
2117     mpegaudio
2118     mpegaudiodsp
2119     mpegaudioheader
2120     mpegvideo
2121     mpegvideoenc
2122     mss34dsp
2123     pixblockdsp
2124     qpeldsp
2125     qsv
2126     qsvdec
2127     qsvenc
2128     rangecoder
2129     riffdec
2130     riffenc
2131     rtpdec
2132     rtpenc_chain
2133     rv34dsp
2134     sinewin
2135     snappy
2136     srtp
2137     startcode
2138     texturedsp
2139     texturedspenc
2140     tpeldsp
2141     vaapi_encode
2142     vc1dsp
2143     videodsp
2144     vp3dsp
2145     vp56dsp
2146     vp8dsp
2147     vt_bt2020
2148     wma_freqs
2149     wmv2dsp
2150 "
2151
2152 CMDLINE_SELECT="
2153     $ARCH_EXT_LIST
2154     $CONFIG_LIST
2155     $HAVE_LIST_CMDLINE
2156     $THREADS_LIST
2157     asm
2158     cross_compile
2159     debug
2160     extra_warnings
2161     logging
2162     lto
2163     optimizations
2164     rpath
2165     stripping
2166 "
2167
2168 PATHS_LIST="
2169     bindir
2170     datadir
2171     docdir
2172     incdir
2173     libdir
2174     mandir
2175     pkgconfigdir
2176     prefix
2177     shlibdir
2178     install_name_dir
2179 "
2180
2181 CMDLINE_SET="
2182     $PATHS_LIST
2183     ar
2184     arch
2185     as
2186     assert_level
2187     build_suffix
2188     cc
2189     objcc
2190     cpu
2191     cross_prefix
2192     custom_allocator
2193     cxx
2194     dep_cc
2195     doxygen
2196     env
2197     extra_version
2198     gas
2199     host_cc
2200     host_cflags
2201     host_extralibs
2202     host_ld
2203     host_ldflags
2204     host_os
2205     install
2206     ld
2207     ln_s
2208     logfile
2209     malloc_prefix
2210     nm
2211     optflags
2212     pkg_config
2213     pkg_config_flags
2214     progs_suffix
2215     random_seed
2216     ranlib
2217     samples
2218     strip
2219     sws_max_filter_size
2220     sysinclude
2221     sysroot
2222     target_exec
2223     target_os
2224     target_path
2225     target_samples
2226     tempprefix
2227     toolchain
2228     valgrind
2229     yasmexe
2230 "
2231
2232 CMDLINE_APPEND="
2233     extra_cflags
2234     extra_cxxflags
2235     extra_objcflags
2236     host_cppflags
2237 "
2238
2239 # code dependency declarations
2240
2241 # architecture extensions
2242
2243 armv5te_deps="arm"
2244 armv6_deps="arm"
2245 armv6t2_deps="arm"
2246 armv8_deps="aarch64"
2247 neon_deps_any="aarch64 arm"
2248 intrinsics_neon_deps="neon"
2249 vfp_deps_any="aarch64 arm"
2250 vfpv3_deps="vfp"
2251 setend_deps="arm"
2252
2253 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2254
2255 loongson2_deps="mips"
2256 loongson3_deps="mips"
2257 mipsfpu_deps="mips"
2258 mipsdsp_deps="mips"
2259 mipsdspr2_deps="mips"
2260 mips32r2_deps="mips"
2261 mips32r5_deps="mips"
2262 mips32r6_deps="mips"
2263 mips64r2_deps="mips"
2264 mips64r6_deps="mips"
2265 msa_deps="mipsfpu"
2266 mmi_deps="mips"
2267
2268 altivec_deps="ppc"
2269 dcbzl_deps="ppc"
2270 ldbrx_deps="ppc"
2271 ppc4xx_deps="ppc"
2272 vsx_deps="altivec"
2273 power8_deps="vsx"
2274
2275 cpunop_deps="i686"
2276 x86_64_select="i686"
2277 x86_64_suggest="fast_cmov"
2278
2279 amd3dnow_deps="mmx"
2280 amd3dnowext_deps="amd3dnow"
2281 i686_deps="x86"
2282 mmx_deps="x86"
2283 mmxext_deps="mmx"
2284 sse_deps="mmxext"
2285 sse2_deps="sse"
2286 sse3_deps="sse2"
2287 ssse3_deps="sse3"
2288 sse4_deps="ssse3"
2289 sse42_deps="sse4"
2290 aesni_deps="sse42"
2291 avx_deps="sse42"
2292 xop_deps="avx"
2293 fma3_deps="avx"
2294 fma4_deps="avx"
2295 avx2_deps="avx"
2296
2297 mmx_external_deps="yasm"
2298 mmx_inline_deps="inline_asm"
2299 mmx_suggest="mmx_external mmx_inline"
2300
2301 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2302     eval dep=\$${ext}_deps
2303     eval ${ext}_external_deps='"${dep}_external"'
2304     eval ${ext}_inline_deps='"${dep}_inline"'
2305     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2306 done
2307
2308 aligned_stack_if_any="aarch64 ppc x86"
2309 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2310 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2311 fast_unaligned_if_any="aarch64 ppc x86"
2312 simd_align_16_if_any="altivec neon sse"
2313 simd_align_32_if_any="avx"
2314
2315 # system capabilities
2316 symver_if_any="symver_asm_label symver_gnu_asm"
2317 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2318
2319 # threading support
2320 atomics_gcc_if="sync_val_compare_and_swap"
2321 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2322 atomics_win32_if="MemoryBarrier"
2323 atomics_native_if_any="$ATOMICS_LIST"
2324 w32threads_deps="atomics_native"
2325 threads_if_any="$THREADS_LIST"
2326
2327 # subsystems
2328 dct_select="rdft"
2329 dirac_parse_select="golomb"
2330 error_resilience_select="me_cmp"
2331 faandct_deps="faan fdctdsp"
2332 faanidct_deps="faan idctdsp"
2333 h264dsp_select="startcode"
2334 hevcparse_select="golomb"
2335 frame_thread_encoder_deps="encoders threads"
2336 intrax8_select="blockdsp idctdsp"
2337 mdct_select="fft"
2338 mdct15_select="fft"
2339 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2340 mpeg_er_select="error_resilience"
2341 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2342 mpegaudiodsp_select="dct"
2343 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2344 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2345 vc1dsp_select="h264chroma qpeldsp startcode"
2346 rdft_select="fft"
2347
2348 # decoders / encoders
2349 aac_decoder_select="mdct15 mdct sinewin"
2350 aac_fixed_decoder_select="mdct sinewin"
2351 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2352 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2353 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2354 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2355 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2356 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2357 adpcm_g722_decoder_select="g722dsp"
2358 adpcm_g722_encoder_select="g722dsp"
2359 aic_decoder_select="golomb idctdsp"
2360 alac_encoder_select="lpc"
2361 als_decoder_select="bswapdsp"
2362 amrnb_decoder_select="lsp"
2363 amrwb_decoder_select="lsp"
2364 amv_decoder_select="sp5x_decoder exif"
2365 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2366 ape_decoder_select="bswapdsp llauddsp"
2367 apng_decoder_select="zlib"
2368 apng_encoder_select="llvidencdsp zlib"
2369 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2370 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2371 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2372 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2373 atrac1_decoder_select="mdct sinewin"
2374 atrac3_decoder_select="mdct"
2375 atrac3p_decoder_select="mdct sinewin"
2376 avrn_decoder_select="exif jpegtables"
2377 bink_decoder_select="blockdsp hpeldsp"
2378 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2379 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2380 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2381 cllc_decoder_select="bswapdsp"
2382 comfortnoise_encoder_select="lpc"
2383 cook_decoder_select="audiodsp mdct sinewin"
2384 cscd_decoder_select="lzo"
2385 cscd_decoder_suggest="zlib"
2386 dca_decoder_select="mdct"
2387 dds_decoder_select="texturedsp"
2388 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2389 dnxhd_decoder_select="blockdsp idctdsp"
2390 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2391 dvvideo_decoder_select="dvprofile idctdsp"
2392 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2393 dxa_decoder_select="zlib"
2394 dxv_decoder_select="lzf texturedsp"
2395 eac3_decoder_select="ac3_decoder"
2396 eac3_encoder_select="ac3_encoder"
2397 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2398 eatgq_decoder_select="aandcttables"
2399 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2400 exr_decoder_select="zlib"
2401 ffv1_decoder_select="rangecoder"
2402 ffv1_encoder_select="rangecoder"
2403 ffvhuff_decoder_select="huffyuv_decoder"
2404 ffvhuff_encoder_select="huffyuv_encoder"
2405 fic_decoder_select="golomb"
2406 flac_decoder_select="flacdsp"
2407 flac_encoder_select="bswapdsp flacdsp lpc"
2408 flashsv2_decoder_select="zlib"
2409 flashsv2_encoder_select="zlib"
2410 flashsv_decoder_select="zlib"
2411 flashsv_encoder_select="zlib"
2412 flv_decoder_select="h263_decoder"
2413 flv_encoder_select="h263_encoder"
2414 fourxm_decoder_select="blockdsp bswapdsp"
2415 fraps_decoder_select="bswapdsp huffman"
2416 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2417 g729_decoder_select="audiodsp"
2418 h261_decoder_select="mpegvideo"
2419 h261_encoder_select="aandcttables mpegvideoenc"
2420 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2421 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2422 h263i_decoder_select="h263_decoder"
2423 h263p_decoder_select="h263_decoder"
2424 h263p_encoder_select="h263_encoder"
2425 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2426 h264_decoder_suggest="error_resilience"
2427 hap_decoder_select="snappy texturedsp"
2428 hap_encoder_deps="libsnappy"
2429 hap_encoder_select="texturedspenc"
2430 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2431 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2432 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2433 iac_decoder_select="imc_decoder"
2434 imc_decoder_select="bswapdsp fft mdct sinewin"
2435 indeo3_decoder_select="hpeldsp"
2436 indeo4_decoder_select="ividsp"
2437 indeo5_decoder_select="ividsp"
2438 interplay_video_decoder_select="hpeldsp"
2439 jpegls_decoder_select="mjpeg_decoder"
2440 jv_decoder_select="blockdsp"
2441 lagarith_decoder_select="llviddsp"
2442 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2443 magicyuv_decoder_select="llviddsp"
2444 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2445 metasound_decoder_select="lsp mdct sinewin"
2446 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2447 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2448 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2449 mjpegb_decoder_select="mjpeg_decoder"
2450 mlp_decoder_select="mlp_parser"
2451 motionpixels_decoder_select="bswapdsp"
2452 mp1_decoder_select="mpegaudio"
2453 mp1float_decoder_select="mpegaudio"
2454 mp2_decoder_select="mpegaudio"
2455 mp2float_decoder_select="mpegaudio"
2456 mp3_decoder_select="mpegaudio"
2457 mp3adu_decoder_select="mpegaudio"
2458 mp3adufloat_decoder_select="mpegaudio"
2459 mp3float_decoder_select="mpegaudio"
2460 mp3on4_decoder_select="mpegaudio"
2461 mp3on4float_decoder_select="mpegaudio"
2462 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2463 mpc8_decoder_select="mpegaudiodsp"
2464 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2465 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2466 mpegvideo_decoder_select="mpegvideo"
2467 mpeg1video_decoder_select="mpegvideo"
2468 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2469 mpeg2video_decoder_select="mpegvideo"
2470 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2471 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2472 mpeg4_encoder_select="h263_encoder"
2473 msa1_decoder_select="mss34dsp"
2474 msmpeg4v1_decoder_select="h263_decoder"
2475 msmpeg4v2_decoder_select="h263_decoder"
2476 msmpeg4v2_encoder_select="h263_encoder"
2477 msmpeg4v3_decoder_select="h263_decoder"
2478 msmpeg4v3_encoder_select="h263_encoder"
2479 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2480 mts2_decoder_select="mss34dsp"
2481 mxpeg_decoder_select="mjpeg_decoder"
2482 nellymoser_decoder_select="mdct sinewin"
2483 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2484 nuv_decoder_select="idctdsp lzo"
2485 on2avc_decoder_select="mdct"
2486 opus_decoder_deps="swresample"
2487 opus_decoder_select="mdct15"
2488 opus_encoder_select="audio_frame_queue mdct15"
2489 png_decoder_select="zlib"
2490 png_encoder_select="llvidencdsp zlib"
2491 prores_decoder_select="blockdsp idctdsp"
2492 prores_encoder_select="fdctdsp"
2493 qcelp_decoder_select="lsp"
2494 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2495 ra_144_decoder_select="audiodsp"
2496 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2497 ralf_decoder_select="golomb"
2498 rawvideo_decoder_select="bswapdsp"
2499 rscc_decoder_select="zlib"
2500 rtjpeg_decoder_select="me_cmp"
2501 rv10_decoder_select="h263_decoder"
2502 rv10_encoder_select="h263_encoder"
2503 rv20_decoder_select="h263_decoder"
2504 rv20_encoder_select="h263_encoder"
2505 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2506 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2507 screenpresso_decoder_select="zlib"
2508 shorten_decoder_select="bswapdsp"
2509 sipr_decoder_select="lsp"
2510 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2511 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2512 sonic_decoder_select="golomb rangecoder"
2513 sonic_encoder_select="golomb rangecoder"
2514 sonic_ls_encoder_select="golomb rangecoder"
2515 sp5x_decoder_select="mjpeg_decoder"
2516 svq1_decoder_select="hpeldsp"
2517 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2518 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2519 svq3_decoder_suggest="zlib"
2520 tak_decoder_select="audiodsp"
2521 tdsc_decoder_select="zlib mjpeg_decoder"
2522 theora_decoder_select="vp3_decoder"
2523 thp_decoder_select="mjpeg_decoder"
2524 tiff_decoder_suggest="zlib lzma"
2525 tiff_encoder_suggest="zlib"
2526 truehd_decoder_select="mlp_parser"
2527 truemotion2_decoder_select="bswapdsp"
2528 truespeech_decoder_select="bswapdsp"
2529 tscc_decoder_select="zlib"
2530 twinvq_decoder_select="mdct lsp sinewin"
2531 txd_decoder_select="texturedsp"
2532 utvideo_decoder_select="bswapdsp llviddsp"
2533 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2534 vble_decoder_select="llviddsp"
2535 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2536 vc1_qsv_decoder_deps="libmfx"
2537 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2538 vc1image_decoder_select="vc1_decoder"
2539 vorbis_decoder_select="mdct"
2540 vorbis_encoder_select="mdct"
2541 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2542 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2543 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2544 vp6a_decoder_select="vp6_decoder"
2545 vp6f_decoder_select="vp6_decoder"
2546 vp7_decoder_select="h264pred videodsp vp8dsp"
2547 vp8_decoder_select="h264pred videodsp vp8dsp"
2548 vp9_decoder_select="videodsp vp9_parser"
2549 webp_decoder_select="vp8_decoder exif"
2550 wmalossless_decoder_select="llauddsp"
2551 wmapro_decoder_select="mdct sinewin wma_freqs"
2552 wmav1_decoder_select="mdct sinewin wma_freqs"
2553 wmav1_encoder_select="mdct sinewin wma_freqs"
2554 wmav2_decoder_select="mdct sinewin wma_freqs"
2555 wmav2_encoder_select="mdct sinewin wma_freqs"
2556 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2557 wmv1_decoder_select="h263_decoder"
2558 wmv1_encoder_select="h263_encoder"
2559 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2560 wmv2_encoder_select="h263_encoder wmv2dsp"
2561 wmv3_decoder_select="vc1_decoder"
2562 wmv3image_decoder_select="wmv3_decoder"
2563 xma1_decoder_select="wmapro_decoder"
2564 xma2_decoder_select="wmapro_decoder"
2565 zerocodec_decoder_select="zlib"
2566 zlib_decoder_select="zlib"
2567 zlib_encoder_select="zlib"
2568 zmbv_decoder_select="zlib"
2569 zmbv_encoder_select="zlib"
2570
2571 # platform codecs
2572 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2573 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2574
2575 # hardware accelerators
2576 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2577 cuda_deps_any="dlopen LoadLibrary"
2578 cuvid_deps="cuda"
2579 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2580 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2581 dxva2_extralibs="-luser32"
2582 dxva2_lib_deps="dxva2"
2583 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2584 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2585 vda_deps="vda_framework pthreads"
2586 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2587 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2588 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2589 xvmc_deps="X11_extensions_XvMClib_h"
2590
2591 h263_vaapi_hwaccel_deps="vaapi"
2592 h263_vaapi_hwaccel_select="h263_decoder"
2593 h263_videotoolbox_hwaccel_deps="videotoolbox"
2594 h263_videotoolbox_hwaccel_select="h263_decoder"
2595 h264_cuvid_hwaccel_deps="cuda cuvid"
2596 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2597 h264_d3d11va_hwaccel_deps="d3d11va"
2598 h264_d3d11va_hwaccel_select="h264_decoder"
2599 h264_dxva2_hwaccel_deps="dxva2"
2600 h264_dxva2_hwaccel_select="h264_decoder"
2601 h264_mediacodec_hwaccel_deps="mediacodec"
2602 h264_mmal_hwaccel_deps="mmal"
2603 h264_qsv_hwaccel_deps="libmfx"
2604 h264_vaapi_hwaccel_deps="vaapi"
2605 h264_vaapi_hwaccel_select="h264_decoder"
2606 h264_vda_hwaccel_deps="vda"
2607 h264_vda_hwaccel_select="h264_decoder"
2608 h264_vda_old_hwaccel_deps="vda"
2609 h264_vda_old_hwaccel_select="h264_decoder"
2610 h264_vdpau_hwaccel_deps="vdpau"
2611 h264_vdpau_hwaccel_select="h264_decoder"
2612 h264_videotoolbox_hwaccel_deps="videotoolbox"
2613 h264_videotoolbox_hwaccel_select="h264_decoder"
2614 hevc_cuvid_hwaccel_deps="cuda cuvid"
2615 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2616 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2617 hevc_d3d11va_hwaccel_select="hevc_decoder"
2618 hevc_mediacodec_hwaccel_deps="mediacodec"
2619 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2620 hevc_dxva2_hwaccel_select="hevc_decoder"
2621 hevc_qsv_hwaccel_deps="libmfx"
2622 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2623 hevc_vaapi_hwaccel_select="hevc_decoder"
2624 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2625 hevc_vdpau_hwaccel_select="hevc_decoder"
2626 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2627 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2628 mpeg_xvmc_hwaccel_deps="xvmc"
2629 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2630 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2631 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2632 mpeg1_vdpau_hwaccel_deps="vdpau"
2633 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2634 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2635 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2636 mpeg1_xvmc_hwaccel_deps="xvmc"
2637 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2638 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2639 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2640 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2641 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2642 mpeg2_dxva2_hwaccel_deps="dxva2"
2643 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2644 mpeg2_mmal_hwaccel_deps="mmal"
2645 mpeg2_qsv_hwaccel_deps="libmfx"
2646 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2647 mpeg2_vaapi_hwaccel_deps="vaapi"
2648 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2649 mpeg2_vdpau_hwaccel_deps="vdpau"
2650 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2651 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2652 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2653 mpeg2_xvmc_hwaccel_deps="xvmc"
2654 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2655 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2656 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2657 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2658 mpeg4_mmal_hwaccel_deps="mmal"
2659 mpeg4_vaapi_hwaccel_deps="vaapi"
2660 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2661 mpeg4_vdpau_hwaccel_deps="vdpau"
2662 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2663 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2664 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2665 vc1_cuvid_hwaccel_deps="cuda cuvid"
2666 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2667 vc1_d3d11va_hwaccel_deps="d3d11va"
2668 vc1_d3d11va_hwaccel_select="vc1_decoder"
2669 vc1_dxva2_hwaccel_deps="dxva2"
2670 vc1_dxva2_hwaccel_select="vc1_decoder"
2671 vc1_mmal_hwaccel_deps="mmal"
2672 vc1_qsv_hwaccel_deps="libmfx"
2673 vc1_qsv_hwaccel_select="qsvdec_vc1"
2674 vc1_vaapi_hwaccel_deps="vaapi"
2675 vc1_vaapi_hwaccel_select="vc1_decoder"
2676 vc1_vdpau_hwaccel_deps="vdpau"
2677 vc1_vdpau_hwaccel_select="vc1_decoder"
2678 vp8_cuvid_hwaccel_deps="cuda cuvid"
2679 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2680 vp9_cuvid_hwaccel_deps="cuda cuvid"
2681 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2682 vp8_mediacodec_hwaccel_deps="mediacodec"
2683 vp8_qsv_hwaccel_deps="libmfx"
2684 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2685 vp9_d3d11va_hwaccel_select="vp9_decoder"
2686 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2687 vp9_dxva2_hwaccel_select="vp9_decoder"
2688 vp9_mediacodec_hwaccel_deps="mediacodec"
2689 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2690 vp9_vaapi_hwaccel_select="vp9_decoder"
2691 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2692 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2693 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2694 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2695
2696 # hardware-accelerated codecs
2697 omx_deps="dlopen pthreads"
2698 omx_extralibs='$ldl'
2699 omx_rpi_select="omx"
2700 qsvdec_select="qsv"
2701 qsvenc_select="qsv"
2702 vaapi_encode_deps="vaapi"
2703
2704 hwupload_cuda_filter_deps="cuda"
2705 scale_npp_filter_deps="cuda libnpp"
2706
2707 nvenc_deps="cuda"
2708 nvenc_deps_any="dlopen LoadLibrary"
2709 nvenc_encoder_deps="nvenc"
2710
2711 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2712 h264_cuvid_decoder_deps="cuda cuvid"
2713 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2714 h264_mediacodec_decoder_deps="mediacodec"
2715 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2716 h264_mmal_decoder_deps="mmal"
2717 h264_nvenc_encoder_deps="nvenc"
2718 h264_omx_encoder_deps="omx"
2719 h264_qsv_decoder_deps="libmfx"
2720 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2721 h264_qsv_encoder_deps="libmfx"
2722 h264_qsv_encoder_select="qsvenc"
2723 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2724 h264_vaapi_encoder_select="vaapi_encode golomb"
2725 h264_vda_decoder_deps="vda"
2726 h264_vda_decoder_select="h264_decoder"
2727 h264_vdpau_decoder_deps="vdpau"
2728 h264_vdpau_decoder_select="h264_decoder"
2729 hevc_cuvid_decoder_deps="cuda cuvid"
2730 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2731 hevc_mediacodec_decoder_deps="mediacodec"
2732 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2733 hevc_nvenc_encoder_deps="nvenc"
2734 hevc_qsv_decoder_deps="libmfx"
2735 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2736 hevc_qsv_encoder_deps="libmfx"
2737 hevc_qsv_encoder_select="hevcparse qsvenc"
2738 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2739 hevc_vaapi_encoder_select="vaapi_encode golomb"
2740 mjpeg_cuvid_decoder_deps="cuda cuvid"
2741 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2742 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2743 mpeg1_cuvid_decoder_deps="cuda cuvid"
2744 mpeg1_vdpau_decoder_deps="vdpau"
2745 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2746 mpeg2_crystalhd_decoder_select="crystalhd"
2747 mpeg2_cuvid_decoder_deps="cuda cuvid"
2748 mpeg2_mmal_decoder_deps="mmal"
2749 mpeg2_qsv_decoder_deps="libmfx"
2750 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2751 mpeg2_qsv_encoder_deps="libmfx"
2752 mpeg2_qsv_encoder_select="qsvenc"
2753 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2754 mpeg2_vaapi_encoder_select="vaapi_encode"
2755 mpeg4_crystalhd_decoder_select="crystalhd"
2756 mpeg4_cuvid_decoder_deps="cuda cuvid"
2757 mpeg4_mediacodec_decoder_deps="mediacodec"
2758 mpeg4_mmal_decoder_deps="mmal"
2759 mpeg4_omx_encoder_deps="omx"
2760 mpeg4_vdpau_decoder_deps="vdpau"
2761 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2762 mpeg_vdpau_decoder_deps="vdpau"
2763 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2764 msmpeg4_crystalhd_decoder_select="crystalhd"
2765 nvenc_h264_encoder_select="h264_nvenc_encoder"
2766 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2767 vc1_crystalhd_decoder_select="crystalhd"
2768 vc1_cuvid_decoder_deps="cuda cuvid"
2769 vc1_mmal_decoder_deps="mmal"
2770 vc1_vdpau_decoder_deps="vdpau"
2771 vc1_vdpau_decoder_select="vc1_decoder"
2772 vp8_cuvid_decoder_deps="cuda cuvid"
2773 vp8_mediacodec_decoder_deps="mediacodec"
2774 vp8_qsv_decoder_deps="libmfx"
2775 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2776 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2777 vp8_vaapi_encoder_select="vaapi_encode"
2778 vp9_cuvid_decoder_deps="cuda cuvid"
2779 vp9_mediacodec_decoder_deps="mediacodec"
2780 wmv3_crystalhd_decoder_select="crystalhd"
2781 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2782
2783 # parsers
2784 h264_parser_select="golomb h264dsp h264parse"
2785 hevc_parser_select="hevcparse"
2786 mpegaudio_parser_select="mpegaudioheader"
2787 mpegvideo_parser_select="mpegvideo"
2788 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2789 vc1_parser_select="vc1dsp"
2790
2791 # bitstream_filters
2792 mjpeg2jpeg_bsf_select="jpegtables"
2793
2794 # external libraries
2795 aac_at_decoder_deps="audiotoolbox"
2796 ac3_at_decoder_deps="audiotoolbox"
2797 ac3_at_decoder_select="ac3_parser"
2798 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2799 alac_at_decoder_deps="audiotoolbox"
2800 amr_nb_at_decoder_deps="audiotoolbox"
2801 avisynth_deps_any="dlopen LoadLibrary"
2802 avisynth_demuxer_deps="avisynth"
2803 avisynth_demuxer_select="riffdec"
2804 eac3_at_decoder_deps="audiotoolbox"
2805 eac3_at_decoder_select="ac3_parser"
2806 gsm_ms_at_decoder_deps="audiotoolbox"
2807 ilbc_at_decoder_deps="audiotoolbox"
2808 mp1_at_decoder_deps="audiotoolbox"
2809 mp2_at_decoder_deps="audiotoolbox"
2810 mp3_at_decoder_deps="audiotoolbox"
2811 mp1_at_decoder_select="mpegaudioheader"
2812 mp2_at_decoder_select="mpegaudioheader"
2813 mp3_at_decoder_select="mpegaudioheader"
2814 pcm_alaw_at_decoder_deps="audiotoolbox"
2815 pcm_mulaw_at_decoder_deps="audiotoolbox"
2816 qdmc_at_decoder_deps="audiotoolbox"
2817 qdm2_at_decoder_deps="audiotoolbox"
2818 aac_at_encoder_deps="audiotoolbox"
2819 aac_at_encoder_select="audio_frame_queue"
2820 alac_at_encoder_deps="audiotoolbox"
2821 alac_at_encoder_select="audio_frame_queue"
2822 ilbc_at_encoder_deps="audiotoolbox"
2823 ilbc_at_encoder_select="audio_frame_queue"
2824 pcm_alaw_at_encoder_deps="audiotoolbox"
2825 pcm_alaw_at_encoder_select="audio_frame_queue"
2826 pcm_mulaw_at_encoder_deps="audiotoolbox"
2827 pcm_mulaw_at_encoder_select="audio_frame_queue"
2828 chromaprint_muxer_deps="chromaprint"
2829 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2830 libcelt_decoder_deps="libcelt"
2831 libfdk_aac_decoder_deps="libfdk_aac"
2832 libfdk_aac_encoder_deps="libfdk_aac"
2833 libfdk_aac_encoder_select="audio_frame_queue"
2834 libgme_demuxer_deps="libgme"
2835 libgsm_decoder_deps="libgsm"
2836 libgsm_encoder_deps="libgsm"
2837 libgsm_ms_decoder_deps="libgsm"
2838 libgsm_ms_encoder_deps="libgsm"
2839 libilbc_decoder_deps="libilbc"
2840 libilbc_encoder_deps="libilbc"
2841 libkvazaar_encoder_deps="libkvazaar"
2842 libmodplug_demuxer_deps="libmodplug"
2843 libmp3lame_encoder_deps="libmp3lame"
2844 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2845 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2846 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2847 libopencore_amrnb_encoder_select="audio_frame_queue"
2848 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2849 libopenh264_decoder_deps="libopenh264"
2850 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2851 libopenh264_encoder_deps="libopenh264"
2852 libopenjpeg_decoder_deps="libopenjpeg"
2853 libopenjpeg_encoder_deps="libopenjpeg"
2854 libopenmpt_demuxer_deps="libopenmpt"
2855 libopus_decoder_deps="libopus"
2856 libopus_encoder_deps="libopus"
2857 libopus_encoder_select="audio_frame_queue"
2858 libschroedinger_decoder_deps="libschroedinger"
2859 libschroedinger_encoder_deps="libschroedinger"
2860 libshine_encoder_deps="libshine"
2861 libshine_encoder_select="audio_frame_queue"
2862 libspeex_decoder_deps="libspeex"
2863 libspeex_encoder_deps="libspeex"
2864 libspeex_encoder_select="audio_frame_queue"
2865 libtheora_encoder_deps="libtheora"
2866 libtwolame_encoder_deps="libtwolame"
2867 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2868 libvorbis_decoder_deps="libvorbis"
2869 libvorbis_encoder_deps="libvorbis"
2870 libvorbis_encoder_select="audio_frame_queue"
2871 libvpx_vp8_decoder_deps="libvpx"
2872 libvpx_vp8_encoder_deps="libvpx"
2873 libvpx_vp9_decoder_deps="libvpx"
2874 libvpx_vp9_encoder_deps="libvpx"
2875 libwavpack_encoder_deps="libwavpack"
2876 libwavpack_encoder_select="audio_frame_queue"
2877 libwebp_encoder_deps="libwebp"
2878 libwebp_anim_encoder_deps="libwebp"
2879 libx262_encoder_deps="libx262"
2880 libx264_encoder_deps="libx264"
2881 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2882 libx264rgb_encoder_select="libx264_encoder"
2883 libx265_encoder_deps="libx265"
2884 libxavs_encoder_deps="libxavs"
2885 libxvid_encoder_deps="libxvid"
2886 libzvbi_teletext_decoder_deps="libzvbi"
2887 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2888 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2889 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2890 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2891 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2892
2893 # demuxers / muxers
2894 ac3_demuxer_select="ac3_parser"
2895 aiff_muxer_select="iso_media"
2896 asf_demuxer_select="riffdec"
2897 asf_o_demuxer_select="riffdec"
2898 asf_muxer_select="riffenc"
2899 asf_stream_muxer_select="asf_muxer"
2900 avi_demuxer_select="iso_media riffdec exif"
2901 avi_muxer_select="riffenc"
2902 caf_demuxer_select="iso_media riffdec"
2903 caf_muxer_select="iso_media"
2904 dash_muxer_select="mp4_muxer"
2905 dirac_demuxer_select="dirac_parser"
2906 dts_demuxer_select="dca_parser"
2907 dtshd_demuxer_select="dca_parser"
2908 dv_demuxer_select="dvprofile"
2909 dv_muxer_select="dvprofile"
2910 dxa_demuxer_select="riffdec"
2911 eac3_demuxer_select="ac3_parser"
2912 f4v_muxer_select="mov_muxer"
2913 fifo_muxer_deps="threads"
2914 flac_demuxer_select="flac_parser"
2915 hds_muxer_select="flv_muxer"
2916 hls_muxer_select="mpegts_muxer"
2917 image2_alias_pix_demuxer_select="image2_demuxer"
2918 image2_brender_pix_demuxer_select="image2_demuxer"
2919 ipod_muxer_select="mov_muxer"
2920 ismv_muxer_select="mov_muxer"
2921 libnut_demuxer_deps="libnut"
2922 libnut_muxer_deps="libnut"
2923 matroska_audio_muxer_select="matroska_muxer"
2924 matroska_demuxer_select="iso_media riffdec"
2925 matroska_demuxer_suggest="bzlib lzo zlib"
2926 matroska_muxer_select="iso_media riffenc"
2927 mmf_muxer_select="riffenc"
2928 mov_demuxer_select="iso_media riffdec"
2929 mov_demuxer_suggest="zlib"
2930 mov_muxer_select="iso_media riffenc rtpenc_chain"
2931 mp3_demuxer_select="mpegaudio_parser"
2932 mp3_muxer_select="mpegaudioheader"
2933 mp4_muxer_select="mov_muxer"
2934 mpegts_demuxer_select="iso_media"
2935 mpegts_muxer_select="adts_muxer latm_muxer"
2936 mpegtsraw_demuxer_select="mpegts_demuxer"
2937 mxf_d10_muxer_select="mxf_muxer"
2938 mxf_opatom_muxer_select="mxf_muxer"
2939 nut_muxer_select="riffenc"
2940 nuv_demuxer_select="riffdec"
2941 oga_muxer_select="ogg_muxer"
2942 ogg_demuxer_select="dirac_parse"
2943 ogv_muxer_select="ogg_muxer"
2944 opus_muxer_select="ogg_muxer"
2945 psp_muxer_select="mov_muxer"
2946 rtp_demuxer_select="sdp_demuxer"
2947 rtp_muxer_select="golomb"
2948 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2949 rtsp_demuxer_select="http_protocol rtpdec"
2950 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2951 sap_demuxer_select="sdp_demuxer"
2952 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2953 sdp_demuxer_select="rtpdec"
2954 smoothstreaming_muxer_select="ismv_muxer"
2955 spdif_muxer_select="aac_parser"
2956 spx_muxer_select="ogg_muxer"
2957 swf_demuxer_suggest="zlib"
2958 tak_demuxer_select="tak_parser"
2959 tg2_muxer_select="mov_muxer"
2960 tgp_muxer_select="mov_muxer"
2961 vobsub_demuxer_select="mpegps_demuxer"
2962 w64_demuxer_select="wav_demuxer"
2963 w64_muxer_select="wav_muxer"
2964 wav_demuxer_select="riffdec"
2965 wav_muxer_select="riffenc"
2966 webm_muxer_select="iso_media riffenc"
2967 webm_dash_manifest_demuxer_select="matroska_demuxer"
2968 wtv_demuxer_select="mpegts_demuxer riffdec"
2969 wtv_muxer_select="mpegts_muxer riffenc"
2970 xmv_demuxer_select="riffdec"
2971 xwma_demuxer_select="riffdec"
2972
2973 # indevs / outdevs
2974 alsa_indev_deps="alsa"
2975 alsa_outdev_deps="alsa"
2976 avfoundation_indev_deps="pthreads"
2977 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2978 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2979 caca_outdev_deps="libcaca"
2980 decklink_indev_deps="decklink threads"
2981 decklink_indev_extralibs="-lstdc++"
2982 decklink_outdev_deps="decklink threads"
2983 decklink_outdev_extralibs="-lstdc++"
2984 dshow_indev_deps="IBaseFilter"
2985 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2986 dv1394_indev_deps="dv1394"
2987 dv1394_indev_select="dv_demuxer"
2988 fbdev_indev_deps="linux_fb_h"
2989 fbdev_outdev_deps="linux_fb_h"
2990 gdigrab_indev_deps="CreateDIBSection"
2991 gdigrab_indev_extralibs="-lgdi32"
2992 gdigrab_indev_select="bmp_decoder"
2993 iec61883_indev_deps="libiec61883"
2994 jack_indev_deps="jack"
2995 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2996 lavfi_indev_deps="avfilter"
2997 libcdio_indev_deps="libcdio"
2998 libdc1394_indev_deps="libdc1394"
2999 libv4l2_indev_deps="libv4l2"
3000 openal_indev_deps="openal"
3001 opengl_outdev_deps="opengl"
3002 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3003 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3004 pulse_indev_deps="libpulse"
3005 pulse_outdev_deps="libpulse"
3006 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3007 qtkit_indev_select="qtkit"
3008 sdl2_outdev_deps="sdl2"
3009 sndio_indev_deps="sndio"
3010 sndio_outdev_deps="sndio"
3011 v4l_indev_deps="linux_videodev_h"
3012 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3013 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3014 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3015 vfwcap_indev_extralibs="-lavicap32"
3016 xcbgrab_indev_deps="libxcb"
3017 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3018 xv_outdev_extralibs="-lXv -lX11 -lXext"
3019
3020 # protocols
3021 async_protocol_deps="threads"
3022 bluray_protocol_deps="libbluray"
3023 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3024 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3025 ffrtmpcrypt_protocol_select="tcp_protocol"
3026 ffrtmphttp_protocol_deps="!librtmp_protocol"
3027 ffrtmphttp_protocol_select="http_protocol"
3028 ftp_protocol_select="tcp_protocol"
3029 gopher_protocol_select="network"
3030 http_protocol_select="tcp_protocol"
3031 httpproxy_protocol_select="tcp_protocol"
3032 https_protocol_select="tls_protocol"
3033 icecast_protocol_select="http_protocol"
3034 librtmp_protocol_deps="librtmp"
3035 librtmpe_protocol_deps="librtmp"
3036 librtmps_protocol_deps="librtmp"
3037 librtmpt_protocol_deps="librtmp"
3038 librtmpte_protocol_deps="librtmp"
3039 libsmbclient_protocol_deps="libsmbclient gplv3"
3040 libssh_protocol_deps="libssh"
3041 mmsh_protocol_select="http_protocol"
3042 mmst_protocol_select="network"
3043 rtmp_protocol_deps="!librtmp_protocol"
3044 rtmp_protocol_select="tcp_protocol"
3045 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3046 rtmps_protocol_deps="!librtmp_protocol"
3047 rtmps_protocol_select="tls_protocol"
3048 rtmpt_protocol_select="ffrtmphttp_protocol"
3049 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3050 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3051 rtp_protocol_select="udp_protocol"
3052 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3053 sctp_protocol_select="network"
3054 srtp_protocol_select="rtp_protocol srtp"
3055 tcp_protocol_select="network"
3056 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3057 tls_gnutls_protocol_select="tcp_protocol"
3058 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3059 tls_openssl_protocol_select="tcp_protocol"
3060 tls_schannel_protocol_deps="schannel"
3061 tls_schannel_protocol_select="tcp_protocol"
3062 tls_securetransport_protocol_deps="securetransport"
3063 tls_securetransport_protocol_select="tcp_protocol"
3064 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3065 udp_protocol_select="network"
3066 udplite_protocol_select="network"
3067 unix_protocol_deps="sys_un_h"
3068 unix_protocol_select="network"
3069
3070 # filters
3071 afftfilt_filter_deps="avcodec"
3072 afftfilt_filter_select="fft"
3073 amovie_filter_deps="avcodec avformat"
3074 aresample_filter_deps="swresample"
3075 ass_filter_deps="libass"
3076 atempo_filter_deps="avcodec"
3077 atempo_filter_select="rdft"
3078 azmq_filter_deps="libzmq"
3079 blackframe_filter_deps="gpl"
3080 boxblur_filter_deps="gpl"
3081 bs2b_filter_deps="libbs2b"
3082 colormatrix_filter_deps="gpl"
3083 cover_rect_filter_deps="avcodec avformat gpl"
3084 cropdetect_filter_deps="gpl"
3085 deinterlace_qsv_filter_deps="libmfx"
3086 deinterlace_vaapi_filter_deps="vaapi"
3087 delogo_filter_deps="gpl"
3088 deshake_filter_select="pixelutils"
3089 drawtext_filter_deps="libfreetype"
3090 eq_filter_deps="gpl"
3091 fftfilt_filter_deps="avcodec"
3092 fftfilt_filter_select="rdft"
3093 find_rect_filter_deps="avcodec avformat gpl"
3094 firequalizer_filter_deps="avcodec"
3095 firequalizer_filter_select="rdft"
3096 flite_filter_deps="libflite"
3097 framerate_filter_select="pixelutils"
3098 frei0r_filter_deps="frei0r dlopen"
3099 frei0r_src_filter_deps="frei0r dlopen"
3100 fspp_filter_deps="gpl"
3101 geq_filter_deps="gpl"
3102 histeq_filter_deps="gpl"
3103 hqdn3d_filter_deps="gpl"
3104 interlace_filter_deps="gpl"
3105 kerndeint_filter_deps="gpl"
3106 ladspa_filter_deps="ladspa dlopen"
3107 mcdeint_filter_deps="avcodec gpl"
3108 movie_filter_deps="avcodec avformat"
3109 mpdecimate_filter_deps="gpl"
3110 mpdecimate_filter_select="pixelutils"
3111 mptestsrc_filter_deps="gpl"
3112 negate_filter_deps="lut_filter"
3113 nnedi_filter_deps="gpl"
3114 ocr_filter_deps="libtesseract"
3115 ocv_filter_deps="libopencv"
3116 owdenoise_filter_deps="gpl"
3117 pan_filter_deps="swresample"
3118 perspective_filter_deps="gpl"
3119 phase_filter_deps="gpl"
3120 pp7_filter_deps="gpl"
3121 pp_filter_deps="gpl postproc"
3122 pullup_filter_deps="gpl"
3123 removelogo_filter_deps="avcodec avformat swscale"
3124 repeatfields_filter_deps="gpl"
3125 resample_filter_deps="avresample"
3126 rubberband_filter_deps="librubberband"
3127 sab_filter_deps="gpl swscale"
3128 scale2ref_filter_deps="swscale"
3129 scale_filter_deps="swscale"
3130 scale_qsv_filter_deps="libmfx"
3131 select_filter_select="pixelutils"
3132 showcqt_filter_deps="avcodec avformat swscale"
3133 showcqt_filter_select="fft"
3134 showfreqs_filter_deps="avcodec"
3135 showfreqs_filter_select="fft"
3136 showspectrum_filter_deps="avcodec"
3137 showspectrum_filter_select="fft"
3138 showspectrumpic_filter_deps="avcodec"
3139 showspectrumpic_filter_select="fft"
3140 signature_filter_deps="gpl avcodec avformat"
3141 smartblur_filter_deps="gpl swscale"
3142 sofalizer_filter_deps="netcdf avcodec"
3143 sofalizer_filter_select="fft"
3144 spectrumsynth_filter_deps="avcodec"
3145 spectrumsynth_filter_select="fft"
3146 spp_filter_deps="gpl avcodec"
3147 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3148 stereo3d_filter_deps="gpl"
3149 subtitles_filter_deps="avformat avcodec libass"
3150 super2xsai_filter_deps="gpl"
3151 pixfmts_super2xsai_test_deps="super2xsai_filter"
3152 tinterlace_filter_deps="gpl"
3153 tinterlace_merge_test_deps="tinterlace_filter"
3154 tinterlace_pad_test_deps="tinterlace_filter"
3155 uspp_filter_deps="gpl avcodec"
3156 vaguedenoiser_filter_deps="gpl"
3157 vidstabdetect_filter_deps="libvidstab"
3158 vidstabtransform_filter_deps="libvidstab"
3159 zmq_filter_deps="libzmq"
3160 zoompan_filter_deps="swscale"
3161 zscale_filter_deps="libzimg"
3162 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3163
3164 # examples
3165 avio_dir_cmd_deps="avformat avutil"
3166 avio_reading_deps="avformat avcodec avutil"
3167 decode_audio_example_deps="avcodec avutil"
3168 decode_video_example_deps="avcodec avutil"
3169 demuxing_decoding_example_deps="avcodec avformat avutil"
3170 encode_audio_example_deps="avcodec avutil"
3171 encode_video_example_deps="avcodec avutil"
3172 extract_mvs_example_deps="avcodec avformat avutil"
3173 filter_audio_example_deps="avfilter avutil"
3174 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3175 filtering_video_example_deps="avfilter avcodec avformat avutil"
3176 http_multiclient_example_deps="avformat avutil fork"
3177 metadata_example_deps="avformat avutil"
3178 muxing_example_deps="avcodec avformat avutil swscale"
3179 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3180 remuxing_example_deps="avcodec avformat avutil"
3181 resampling_audio_example_deps="avutil swresample"
3182 scaling_video_example_deps="avutil swscale"
3183 transcode_aac_example_deps="avcodec avformat swresample"
3184 transcoding_example_deps="avfilter avcodec avformat avutil"
3185
3186 # libraries, in linking order
3187 avcodec_deps="avutil"
3188 avdevice_deps="avformat avcodec avutil"
3189 avfilter_deps="avutil"
3190 avformat_deps="avcodec avutil"
3191 avresample_deps="avutil"
3192 postproc_deps="avutil gpl"
3193 swresample_deps="avutil"
3194 swscale_deps="avutil"
3195
3196 # programs
3197 ffmpeg_deps="avcodec avfilter avformat swresample"
3198 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3199                null_filter
3200                trim_filter"
3201 ffplay_deps="avcodec avformat swscale swresample sdl2"
3202 ffplay_extralibs='$sdl2_extralibs'
3203 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3204 ffprobe_deps="avcodec avformat"
3205 ffserver_deps="avformat fork sarestart"
3206 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3207
3208 # documentation
3209 podpages_deps="perl"
3210 manpages_deps="perl pod2man"
3211 htmlpages_deps="perl"
3212 htmlpages_deps_any="makeinfo_html texi2html"
3213 txtpages_deps="perl makeinfo"
3214 doc_deps_any="manpages htmlpages podpages txtpages"
3215
3216 # default parameters
3217
3218 logfile="config.log"
3219
3220 # installation paths
3221 prefix_default="/usr/local"
3222 bindir_default='${prefix}/bin'
3223 datadir_default='${prefix}/share/ffmpeg'
3224 docdir_default='${prefix}/share/doc/ffmpeg'
3225 incdir_default='${prefix}/include'
3226 libdir_default='${prefix}/lib'
3227 mandir_default='${prefix}/share/man'
3228
3229 # toolchain
3230 ar_default="ar"
3231 cc_default="gcc"
3232 cxx_default="g++"
3233 host_cc_default="gcc"
3234 doxygen_default="doxygen"
3235 install="install"
3236 ln_s_default="ln -s -f"
3237 nm_default="nm -g"
3238 objformat="elf"
3239 pkg_config_default=pkg-config
3240 ranlib_default="ranlib"
3241 strip_default="strip"
3242 version_script='--version-script'
3243 yasmexe_default="yasm"
3244 windres_default="windres"
3245
3246 # OS
3247 target_os_default=$(tolower $(uname -s))
3248 host_os=$target_os_default
3249
3250 # machine
3251 if test "$target_os_default" = aix; then
3252     arch_default=$(uname -p)
3253     strip_default="strip -X32_64"
3254 else
3255     arch_default=$(uname -m)
3256 fi
3257 cpu="generic"
3258 intrinsics="none"
3259
3260 # configurable options
3261 enable $PROGRAM_LIST
3262 enable $DOCUMENT_LIST
3263 enable $EXAMPLE_LIST
3264 enable $(filter_out avresample $LIBRARY_LIST)
3265 enable stripping
3266
3267 enable asm
3268 enable debug
3269 enable doc
3270 enable faan faandct faanidct
3271 enable optimizations
3272 enable runtime_cpudetect
3273 enable safe_bitstream_reader
3274 enable static
3275 enable swscale_alpha
3276 enable valgrind_backtrace
3277
3278 sws_max_filter_size_default=256
3279 set_default sws_max_filter_size
3280
3281 # build settings
3282 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3283 LIBPREF="lib"
3284 LIBSUF=".a"
3285 FULLNAME='$(NAME)$(BUILDSUF)'
3286 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3287 SLIBPREF="lib"
3288 SLIBSUF=".so"
3289 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3290 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3291 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3292 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3293 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3294 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3295 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3296
3297 asflags_filter=echo
3298 cflags_filter=echo
3299 ldflags_filter=echo
3300
3301 AS_C='-c'
3302 AS_O='-o $@'
3303 CC_C='-c'
3304 CC_E='-E -o $@'
3305 CC_O='-o $@'
3306 CXX_C='-c'
3307 CXX_O='-o $@'
3308 OBJCC_C='-c'
3309 OBJCC_E='-E -o $@'
3310 OBJCC_O='-o $@'
3311 LD_O='-o $@'
3312 LD_LIB='-l%'
3313 LD_PATH='-L'
3314 HOSTCC_C='-c'
3315 HOSTCC_E='-E -o $@'
3316 HOSTCC_O='-o $@'
3317 HOSTLD_O='-o $@'
3318
3319 host_extralibs='-lm'
3320 host_cflags_filter=echo
3321 host_ldflags_filter=echo
3322
3323 target_path='$(CURDIR)'
3324
3325 # since the object filename is not given with the -MM flag, the compiler
3326 # is only able to print the basename, and we must add the path ourselves
3327 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3328 DEPFLAGS='-MM'
3329
3330 # find source path
3331 if test -f configure; then
3332     source_path=.
3333 else
3334     source_path=$(cd $(dirname "$0"); pwd)
3335     case "$source_path" in
3336         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3337     esac
3338     test -e "$source_path/config.h" &&
3339         die "Out of tree builds are impossible with config.h in source dir."
3340 fi
3341
3342 for v in "$@"; do
3343     r=${v#*=}
3344     l=${v%"$r"}
3345     r=$(sh_quote "$r")
3346     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3347 done
3348
3349 find_things(){
3350     thing=$1
3351     pattern=$2
3352     file=$source_path/$3
3353     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3354 }
3355
3356 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3357 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3358 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3359 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3360 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3361 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3362 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3363 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3364 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3365
3366 find_things_extern(){
3367     thing=$1
3368     pattern=$2
3369     file=$source_path/$3
3370     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3371 }
3372
3373 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3374 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3375
3376 ALL_COMPONENTS="
3377     $BSF_LIST
3378     $DECODER_LIST
3379     $DEMUXER_LIST
3380     $ENCODER_LIST
3381     $FILTER_LIST
3382     $HWACCEL_LIST
3383     $INDEV_LIST
3384     $MUXER_LIST
3385     $OUTDEV_LIST
3386     $PARSER_LIST
3387     $PROTOCOL_LIST
3388 "
3389
3390 for n in $COMPONENT_LIST; do
3391     v=$(toupper ${n%s})_LIST
3392     eval enable \$$v
3393     eval ${n}_if_any="\$$v"
3394 done
3395
3396 enable $ARCH_EXT_LIST
3397
3398 die_unknown(){
3399     echo "Unknown option \"$1\"."
3400     echo "See $0 --help for available options."
3401     exit 1
3402 }
3403
3404 print_in_columns() {
3405     cols=$(expr $ncols / 24)
3406     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3407 }
3408
3409 show_list() {
3410     suffix=_$1
3411     shift
3412     echo $* | sed s/$suffix//g | print_in_columns
3413     exit 0
3414 }
3415
3416 rand_list(){
3417     IFS=', '
3418     set -- $*
3419     unset IFS
3420     for thing; do
3421         comp=${thing%:*}
3422         prob=${thing#$comp}
3423         prob=${prob#:}
3424         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3425         echo "prob ${prob:-0.5}"
3426         printf '%s\n' $comp
3427     done
3428 }
3429
3430 do_random(){
3431     action=$1
3432     shift
3433     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3434     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3435 }
3436
3437 for opt do
3438     optval="${opt#*=}"
3439     case "$opt" in
3440         --extra-ldflags=*)
3441             add_ldflags $optval
3442         ;;
3443         --extra-ldexeflags=*)
3444             add_ldexeflags $optval
3445         ;;
3446         --extra-ldlibflags=*)
3447             add_ldlibflags $optval
3448         ;;
3449         --extra-libs=*)
3450             add_extralibs $optval
3451         ;;
3452         --disable-devices)
3453             disable $INDEV_LIST $OUTDEV_LIST
3454         ;;
3455         --enable-debug=*)
3456             debuglevel="$optval"
3457         ;;
3458         --disable-programs)
3459             disable $PROGRAM_LIST
3460         ;;
3461         --disable-everything)
3462             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3463         ;;
3464         --disable-all)
3465             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3466             disable $LIBRARY_LIST $PROGRAM_LIST doc
3467             enable avutil
3468         ;;
3469         --enable-random|--disable-random)
3470             action=${opt%%-random}
3471             do_random ${action#--} $COMPONENT_LIST
3472         ;;
3473         --enable-random=*|--disable-random=*)
3474             action=${opt%%-random=*}
3475             do_random ${action#--} $optval
3476         ;;
3477         --enable-*=*|--disable-*=*)
3478             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3479             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3480             eval list=\$$(toupper $thing)_LIST
3481             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3482             list=$(filter "$name" $list)
3483             [ "$list" = "" ] && warn "Option $opt did not match anything"
3484             $action $list
3485         ;;
3486         --enable-?*|--disable-?*)
3487             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3488             if is_in $option $COMPONENT_LIST; then
3489                 test $action = disable && action=unset
3490                 eval $action \$$(toupper ${option%s})_LIST
3491             elif is_in $option $CMDLINE_SELECT; then
3492                 $action $option
3493             else
3494                 die_unknown $opt
3495             fi
3496         ;;
3497         --list-*)
3498             NAME="${opt#--list-}"
3499             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3500             NAME=${NAME%s}
3501             eval show_list $NAME \$$(toupper $NAME)_LIST
3502         ;;
3503         --help|-h) show_help
3504         ;;
3505         --quiet|-q) quiet=yes
3506         ;;
3507         --fatal-warnings) enable fatal_warnings
3508         ;;
3509         *)
3510             optname="${opt%%=*}"
3511             optname="${optname#--}"
3512             optname=$(echo "$optname" | sed 's/-/_/g')
3513             if is_in $optname $CMDLINE_SET; then
3514                 eval $optname='$optval'
3515             elif is_in $optname $CMDLINE_APPEND; then
3516                 append $optname "$optval"
3517             else
3518                 die_unknown $opt
3519             fi
3520         ;;
3521     esac
3522 done
3523
3524 for e in $env; do
3525     eval "export $e"
3526 done
3527
3528 # Mark specifically enabled, but normally autodetected libraries as requested.
3529 for lib in $AUTODETECT_LIBS; do
3530     enabled $lib && request $lib
3531 done
3532
3533 # Enable platform codecs by default.
3534 enable_weak audiotoolbox
3535
3536 # Enable hwaccels by default.
3537 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3538 enable_weak xlib
3539
3540 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3541
3542 disabled logging && logfile=/dev/null
3543
3544 die_license_disabled() {
3545     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3546 }
3547
3548 die_license_disabled_gpl() {
3549     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3550 }
3551
3552 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3553 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3554
3555 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3556 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3557
3558 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3559
3560 # Disable all the library-specific components if the library itself
3561 # is disabled, see AVCODEC_LIST and following _LIST variables.
3562
3563 disable_components(){
3564     disabled ${1} && disable $(
3565         eval components="\$$(toupper ${1})_COMPONENTS"
3566         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3567     )
3568 }
3569
3570 map 'disable_components $v' $LIBRARY_LIST
3571
3572 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3573 set >> $logfile
3574
3575 test -n "$valgrind" && toolchain="valgrind-memcheck"
3576
3577 case "$toolchain" in
3578     *-asan)
3579         cc_default="${toolchain%-asan}"
3580         add_cflags  -fsanitize=address
3581         add_ldflags -fsanitize=address
3582     ;;
3583     *-msan)
3584         cc_default="${toolchain%-msan}"
3585         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3586         add_ldflags -fsanitize=memory
3587     ;;
3588     *-tsan)
3589         cc_default="${toolchain%-tsan}"
3590         add_cflags  -fsanitize=thread -fPIE
3591         add_ldflags -fsanitize=thread -pie
3592         case "$toolchain" in
3593             gcc-tsan)
3594                 add_cflags  -fPIC
3595                 add_ldflags -fPIC
3596                 ;;
3597         esac
3598     ;;
3599     *-usan)
3600         cc_default="${toolchain%-usan}"
3601         add_cflags  -fsanitize=undefined
3602         add_ldflags -fsanitize=undefined
3603     ;;
3604     valgrind-*)
3605         target_exec_default="valgrind"
3606         case "$toolchain" in
3607             valgrind-massif)
3608                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3609                 ;;
3610             valgrind-memcheck)
3611                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3612                 ;;
3613         esac
3614     ;;
3615     msvc)
3616         # Check whether the current MSVC version needs the C99 converter.
3617         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3618         # support enough of C99 to build ffmpeg. Default to the new
3619         # behaviour if the regexp was unable to match anything, since this
3620         # successfully parses the version number of existing supported
3621         # versions that require the converter (MSVC 2010 and 2012).
3622         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3623         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3624             cc_default="cl"
3625             cxx_default="cl"
3626         else
3627             cc_default="c99wrap cl"
3628             cxx_default="c99wrap cl"
3629         fi
3630         ld_default="$source_path/compat/windows/mslink"
3631         nm_default="dumpbin -symbols"
3632         ar_default="lib"
3633         case "$arch" in
3634         arm*)
3635             as_default="armasm"
3636             ;;
3637         esac
3638         target_os_default="win32"
3639         # Use a relative path for TMPDIR. This makes sure all the
3640         # ffconf temp files are written with a relative path, avoiding
3641         # issues with msys/win32 path conversion for MSVC parameters
3642         # such as -Fo<file> or -out:<file>.
3643         TMPDIR=.
3644     ;;
3645     icl)
3646         cc_default="icl"
3647         ld_default="xilink"
3648         nm_default="dumpbin -symbols"
3649         ar_default="xilib"
3650         target_os_default="win32"
3651         TMPDIR=.
3652     ;;
3653     gcov)
3654         add_cflags  -fprofile-arcs -ftest-coverage
3655         add_ldflags -fprofile-arcs -ftest-coverage
3656     ;;
3657     llvm-cov)
3658         add_cflags -fprofile-arcs -ftest-coverage
3659         add_ldflags --coverage
3660     ;;
3661     hardened)
3662         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3663         add_cflags   -fno-strict-overflow -fstack-protector-all
3664         add_ldflags  -Wl,-z,relro -Wl,-z,now
3665         add_cflags   -fPIE
3666         add_ldexeflags -fPIE -pie
3667     ;;
3668     ?*)
3669         die "Unknown toolchain $toolchain"
3670     ;;
3671 esac
3672
3673 test -n "$cross_prefix" && enable cross_compile
3674
3675 if enabled cross_compile; then
3676     test -n "$arch" && test -n "$target_os" ||
3677         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3678 fi
3679
3680 ar_default="${cross_prefix}${ar_default}"
3681 cc_default="${cross_prefix}${cc_default}"
3682 cxx_default="${cross_prefix}${cxx_default}"
3683 nm_default="${cross_prefix}${nm_default}"
3684 pkg_config_default="${cross_prefix}${pkg_config_default}"
3685 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3686     ranlib_default="${cross_prefix}${ranlib_default} -D"
3687 else
3688     ranlib_default="${cross_prefix}${ranlib_default}"
3689 fi
3690 strip_default="${cross_prefix}${strip_default}"
3691 windres_default="${cross_prefix}${windres_default}"
3692
3693 sysinclude_default="${sysroot}/usr/include"
3694
3695 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3696     target_exec target_os yasmexe
3697 enabled cross_compile || host_cc_default=$cc
3698 set_default host_cc
3699
3700 pkg_config_fail_message=""
3701 if ! $pkg_config --version >/dev/null 2>&1; then
3702     warn "$pkg_config not found, library detection may fail."
3703     pkg_config=false
3704 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3705     pkg_config_fail_message="
3706 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3707 fi
3708
3709 if test $doxygen != $doxygen_default && \
3710   ! $doxygen --version >/dev/null 2>&1; then
3711     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3712 fi
3713
3714 exesuf() {
3715     case $1 in
3716         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3717     esac
3718 }
3719
3720 EXESUF=$(exesuf $target_os)
3721 HOSTEXESUF=$(exesuf $host_os)
3722
3723 # set temporary file name
3724 : ${TMPDIR:=$TEMPDIR}
3725 : ${TMPDIR:=$TMP}
3726 : ${TMPDIR:=/tmp}
3727
3728 if [ -n "$tempprefix" ] ; then
3729     mktemp(){
3730         echo $tempprefix.${HOSTNAME}.${UID}
3731     }
3732 elif ! check_cmd mktemp -u XXXXXX; then
3733     # simple replacement for missing mktemp
3734     # NOT SAFE FOR GENERAL USE
3735     mktemp(){
3736         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3737     }
3738 fi
3739
3740 tmpfile(){
3741     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3742         (set -C; exec > $tmp) 2>/dev/null ||
3743         die "Unable to create temporary file in $TMPDIR."
3744     append TMPFILES $tmp
3745     eval $1=$tmp
3746 }
3747
3748 trap 'rm -f -- $TMPFILES' EXIT
3749
3750 tmpfile TMPASM .asm
3751 tmpfile TMPC   .c
3752 tmpfile TMPCPP .cpp
3753 tmpfile TMPE   $EXESUF
3754 tmpfile TMPH   .h
3755 tmpfile TMPM   .m
3756 tmpfile TMPO   .o
3757 tmpfile TMPS   .S
3758 tmpfile TMPSH  .sh
3759 tmpfile TMPV   .ver
3760
3761 unset -f mktemp
3762
3763 chmod +x $TMPE
3764
3765 # make sure we can execute files in $TMPDIR
3766 cat > $TMPSH 2>> $logfile <<EOF
3767 #! /bin/sh
3768 EOF
3769 chmod +x $TMPSH >> $logfile 2>&1
3770 if ! $TMPSH >> $logfile 2>&1; then
3771     cat <<EOF
3772 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3773 variable to another directory and make sure that it is not mounted noexec.
3774 EOF
3775     die "Sanity test failed."
3776 fi
3777
3778 armasm_flags(){
3779     for flag; do
3780         case $flag in
3781             # Filter out MSVC cl.exe options from cflags that shouldn't
3782             # be passed to gas-preprocessor
3783             -M[TD]*)                                            ;;
3784             *)                  echo $flag                      ;;
3785         esac
3786    done
3787 }
3788
3789 ccc_flags(){
3790     for flag; do
3791         case $flag in
3792             -std=c99)           echo -c99                       ;;
3793             -mcpu=*)            echo -arch ${flag#*=}           ;;
3794             -mieee)             echo -ieee                      ;;
3795             -O*|-fast)          echo $flag                      ;;
3796             -fno-math-errno)    echo -assume nomath_errno       ;;
3797             -g)                 echo -g3                        ;;
3798             -Wall)              echo -msg_enable level2         ;;
3799             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3800             -Wl,*)              echo $flag                      ;;
3801             -f*|-W*)                                            ;;
3802             *)                  echo $flag                      ;;
3803         esac
3804    done
3805 }
3806
3807 cparser_flags(){
3808     for flag; do
3809         case $flag in
3810             -Wno-switch)             echo -Wno-switch-enum ;;
3811             -Wno-format-zero-length) ;;
3812             -Wdisabled-optimization) ;;
3813             -Wno-pointer-sign)       echo -Wno-other ;;
3814             *)                       echo $flag ;;
3815         esac
3816     done
3817 }
3818
3819 msvc_common_flags(){
3820     for flag; do
3821         case $flag in
3822             # In addition to specifying certain flags under the compiler
3823             # specific filters, they must be specified here as well or else the
3824             # generic catch all at the bottom will print the original flag.
3825             -Wall)                ;;
3826             -std=c99)             ;;
3827             # Common flags
3828             -fomit-frame-pointer) ;;
3829             -g)                   echo -Z7 ;;
3830             -fno-math-errno)      ;;
3831             -fno-common)          ;;
3832             -fno-signed-zeros)    ;;
3833             -fPIC)                ;;
3834             -mthumb)              ;;
3835             -march=*)             ;;
3836             -lz)                  echo zlib.lib ;;
3837             -lavicap32)           echo vfw32.lib user32.lib ;;
3838             -lx264)               echo libx264.lib ;;
3839             -lstdc++)             ;;
3840             -l*)                  echo ${flag#-l}.lib ;;
3841             -LARGEADDRESSAWARE)   echo $flag ;;
3842             -L*)                  echo -libpath:${flag#-L} ;;
3843             *)                    echo $flag ;;
3844         esac
3845     done
3846 }
3847
3848 msvc_flags(){
3849     msvc_common_flags "$@"
3850     for flag; do
3851         case $flag in
3852             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3853                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3854                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3855                                        -wd4307 \
3856                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3857         esac
3858     done
3859 }
3860
3861 icl_flags(){
3862     msvc_common_flags "$@"
3863     for flag; do
3864         case $flag in
3865             # Despite what Intel's documentation says -Wall, which is supported
3866             # on Windows, does enable remarks so disable them here.
3867             -Wall)                echo $flag -Qdiag-disable:remark ;;
3868             -std=c99)             echo -Qstd=c99 ;;
3869             -flto)                echo -ipo ;;
3870         esac
3871     done
3872 }
3873
3874 icc_flags(){
3875     for flag; do
3876         case $flag in
3877             -flto)                echo -ipo ;;
3878             *)                    echo $flag ;;
3879         esac
3880     done
3881 }
3882
3883 pgi_flags(){
3884     for flag; do
3885         case $flag in
3886             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3887             -fomit-frame-pointer) echo -Mnoframe ;;
3888             -g)                   echo -gopt ;;
3889             *)                    echo $flag ;;
3890         esac
3891     done
3892 }
3893
3894 suncc_flags(){
3895     for flag; do
3896         case $flag in
3897             -march=*|-mcpu=*)
3898                 case "${flag#*=}" in
3899                     native)                   echo -xtarget=native       ;;
3900                     v9|niagara)               echo -xarch=sparc          ;;
3901                     ultrasparc)               echo -xarch=sparcvis       ;;
3902                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3903                     i586|pentium)             echo -xchip=pentium        ;;
3904                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3905                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3906                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3907                     pentium4*)          echo -xtarget=pentium4           ;;
3908                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3909                     *-sse3)             echo -xarch=sse3                 ;;
3910                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3911                     bonnell)                   echo -xarch=ssse3         ;;
3912                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3913                     westmere)                  echo -xtarget=westmere    ;;
3914                     silvermont)                echo -xarch=sse4_2        ;;
3915                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3916                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3917                                                echo -xarch=avx           ;;
3918                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3919                     btver1)                    echo -xarch=amdsse4a      ;;
3920                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3921                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3922                     k8|opteron|athlon64|athlon-fx)
3923                                                echo -xarch=sse2a         ;;
3924                     athlon*)                   echo -xarch=pentium_proa  ;;
3925                 esac
3926                 ;;
3927             -std=c99)             echo -xc99              ;;
3928             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3929             -fPIC)                echo -KPIC -xcode=pic32 ;;
3930             -W*,*)                echo $flag              ;;
3931             -f*-*|-W*|-mimpure-text)                      ;;
3932             -shared)              echo -G                 ;;
3933             *)                    echo $flag              ;;
3934         esac
3935     done
3936 }
3937
3938 tms470_flags(){
3939     for flag; do
3940         case $flag in
3941             -march=*|-mcpu=*)
3942                 case "${flag#*=}" in
3943                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3944                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3945                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3946                     armv6*|arm11*)          echo -mv=6   ;;
3947                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3948                                             echo -mv=5e  ;;
3949                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3950                 esac
3951                 ;;
3952             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3953             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3954             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3955             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3956             -msoft-float)   echo --float_support=vfplib       ;;
3957             -O[0-3]|-mf=*)  echo $flag                        ;;
3958             -g)             echo -g -mn                       ;;
3959             -pds=*)         echo $flag                        ;;
3960             -D*|-I*)        echo $flag                        ;;
3961             --gcc|--abi=*)  echo $flag                        ;;
3962             -me)            echo $flag                        ;;
3963         esac
3964     done
3965 }
3966
3967 probe_cc(){
3968     pfx=$1
3969     _cc=$2
3970     first=$3
3971
3972     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3973     unset _ld_o _ldflags _ld_lib _ld_path
3974     unset _depflags _DEPCMD _DEPFLAGS
3975     _flags_filter=echo
3976
3977     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3978         true # no-op to avoid reading stdin in following checks
3979     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3980         _type=llvm_gcc
3981         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3982         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3983         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3984         _cflags_speed='-O3'
3985         _cflags_size='-Os'
3986     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3987         _type=gcc
3988         gcc_version=$($_cc --version | head -n1)
3989         gcc_basever=$($_cc -dumpversion)
3990         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3991         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3992         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3993         case $gcc_basever in
3994             2) ;;
3995             2.*) ;;
3996             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3997         esac
3998         if [ "$first" = true ]; then
3999             case $gcc_basever in
4000                 4.2*)
4001                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4002             esac
4003         fi
4004         _cflags_speed='-O3'
4005         _cflags_size='-Os'
4006     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4007         _type=icc
4008         _ident=$($_cc --version | head -n1)
4009         _depflags='-MMD'
4010         _cflags_speed='-O3'
4011         _cflags_size='-Os'
4012         _cflags_noopt='-O1'
4013         _flags_filter=icc_flags
4014     elif $_cc -v 2>&1 | grep -q xlc; then
4015         _type=xlc
4016         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4017         _cflags_speed='-O5'
4018         _cflags_size='-O5 -qcompact'
4019     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4020         _type=ccc
4021         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4022         _DEPFLAGS='-M'
4023         _cflags_speed='-fast'
4024         _cflags_size='-O1'
4025         _flags_filter=ccc_flags
4026     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4027         test -d "$sysroot" || die "No valid sysroot specified."
4028         _type=armcc
4029         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4030         armcc_conf="$PWD/armcc.conf"
4031         $_cc --arm_linux_configure                 \
4032              --arm_linux_config_file="$armcc_conf" \
4033              --configure_sysroot="$sysroot"        \
4034              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4035              die "Error creating armcc configuration file."
4036         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4037         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4038         as_default="${cross_prefix}gcc"
4039         _depflags='-MMD'
4040         _cflags_speed='-O3'
4041         _cflags_size='-Os'
4042     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4043         _type=tms470
4044         _ident=$($_cc -version | head -n1 | tr -s ' ')
4045         _flags='--gcc --abi=eabi -me'
4046         _cc_e='-ppl -fe=$@'
4047         _cc_o='-fe=$@'
4048         _depflags='-ppa -ppd=$(@:.o=.d)'
4049         _cflags_speed='-O3 -mf=5'
4050         _cflags_size='-O3 -mf=2'
4051         _flags_filter=tms470_flags
4052     elif $_cc -v 2>&1 | grep -q clang; then
4053         _type=clang
4054         _ident=$($_cc --version 2>/dev/null | head -n1)
4055         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4056         _cflags_speed='-O3'
4057         _cflags_size='-Oz'
4058     elif $_cc -V 2>&1 | grep -q Sun; then
4059         _type=suncc
4060         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4061         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4062         _DEPFLAGS='-xM1 -xc99'
4063         _ldflags='-std=c99'
4064         _cflags_speed='-O5'
4065         _cflags_size='-O5 -xspace'
4066         _flags_filter=suncc_flags
4067     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4068         _type=pathscale
4069         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4070         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4071         _cflags_speed='-O2'
4072         _cflags_size='-Os'
4073         _flags_filter='filter_out -Wdisabled-optimization'
4074     elif $_cc -v 2>&1 | grep -q Open64; then
4075         _type=open64
4076         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4077         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4078         _cflags_speed='-O2'
4079         _cflags_size='-Os'
4080         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4081     elif $_cc -V 2>&1 | grep -q Portland; then
4082         _type=pgi
4083         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4084         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4085         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4086         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4087         _cflags_noopt="-O"
4088         _flags_filter=pgi_flags
4089     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4090         _type=armasm
4091         _ident=$($_cc | head -n1)
4092         # 4509: "This form of conditional instruction is deprecated"
4093         _flags="-nologo -ignore 4509"
4094         _flags_filter=armasm_flags
4095     elif $_cc 2>&1 | grep -q Intel; then
4096         _type=icl
4097         _ident=$($_cc 2>&1 | head -n1)
4098         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4099         # Not only is O3 broken on 13.x+ but it is slower on all previous
4100         # versions (tested) as well.
4101         _cflags_speed="-O2"
4102         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4103         if $_cc 2>&1 | grep -q Linker; then
4104             _ld_o='-out:$@'
4105         else
4106             _ld_o='-Fe$@'
4107         fi
4108         _cc_o='-Fo$@'
4109         _cc_e='-P'
4110         _flags_filter=icl_flags
4111         _ld_lib='lib%.a'
4112         _ld_path='-libpath:'
4113         # -Qdiag-error to make icl error when seeing certain unknown arguments
4114         _flags='-nologo -Qdiag-error:4044,10157'
4115         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4116         # with MSVC which enables it by default.
4117         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4118         disable stripping
4119     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4120         # lld can emulate multiple different linkers; in ms link.exe mode,
4121         # the -? parameter gives the help output which contains an identifyable
4122         # string, while it gives an error in other modes.
4123         _type=lld-link
4124         # The link.exe mode doesn't have a switch for getting the version,
4125         # but we can force it back to gnu mode and get the version from there.
4126         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4127         _ld_o='-out:$@'
4128         _flags_filter=msvc_flags
4129         _ld_lib='lib%.a'
4130         _ld_path='-libpath:'
4131     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4132         _type=msvc
4133         _ident=$($_cc 2>&1 | head -n1)
4134         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4135         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4136         _cflags_speed="-O2"
4137         _cflags_size="-O1"
4138         if $_cc -nologo- 2>&1 | grep -q Linker; then
4139             _ld_o='-out:$@'
4140         else
4141             _ld_o='-Fe$@'
4142         fi
4143         _cc_o='-Fo$@'
4144         _cc_e='-P -Fi$@'
4145         _flags_filter=msvc_flags
4146         _ld_lib='lib%.a'
4147         _ld_path='-libpath:'
4148         _flags='-nologo'
4149         disable stripping
4150     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4151         _type=cparser
4152         _ident=$($_cc --version | head -n1)
4153         _depflags='-MMD'
4154         _cflags_speed='-O4'
4155         _cflags_size='-O2'
4156         _flags_filter=cparser_flags
4157     fi
4158
4159     eval ${pfx}_type=\$_type
4160     eval ${pfx}_ident=\$_ident
4161 }
4162
4163 set_ccvars(){
4164     eval ${1}_C=\${_cc_c-\${${1}_C}}
4165     eval ${1}_E=\${_cc_e-\${${1}_E}}
4166     eval ${1}_O=\${_cc_o-\${${1}_O}}
4167
4168     if [ -n "$_depflags" ]; then
4169         eval ${1}_DEPFLAGS=\$_depflags
4170     else
4171         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4172         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4173         eval DEP${1}FLAGS=\$_flags
4174     fi
4175 }
4176
4177 probe_cc cc "$cc" "true"
4178 cflags_filter=$_flags_filter
4179 cflags_speed=$_cflags_speed
4180 cflags_size=$_cflags_size
4181 cflags_noopt=$_cflags_noopt
4182 add_cflags $_flags $_cflags
4183 cc_ldflags=$_ldflags
4184 set_ccvars CC
4185 set_ccvars CXX
4186
4187 probe_cc hostcc "$host_cc"
4188 host_cflags_filter=$_flags_filter
4189 add_host_cflags  $_flags $_cflags
4190 set_ccvars HOSTCC
4191
4192 test -n "$cc_type" && enable $cc_type ||
4193     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4194
4195 : ${as_default:=$cc}
4196 : ${objcc_default:=$cc}
4197 : ${dep_cc_default:=$cc}
4198 : ${ld_default:=$cc}
4199 : ${host_ld_default:=$host_cc}
4200 set_default ar as objcc dep_cc ld ln_s host_ld windres
4201
4202 probe_cc as "$as"
4203 asflags_filter=$_flags_filter
4204 add_asflags $_flags $_cflags
4205 set_ccvars AS
4206
4207 probe_cc objcc "$objcc"
4208 objcflags_filter=$_flags_filter
4209 add_objcflags $_flags $_cflags
4210 set_ccvars OBJC
4211
4212 probe_cc ld "$ld"
4213 ldflags_filter=$_flags_filter
4214 add_ldflags $_flags $_ldflags
4215 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4216 LD_O=${_ld_o-$LD_O}
4217 LD_LIB=${_ld_lib-$LD_LIB}
4218 LD_PATH=${_ld_path-$LD_PATH}
4219
4220 probe_cc hostld "$host_ld"
4221 host_ldflags_filter=$_flags_filter
4222 add_host_ldflags $_flags $_ldflags
4223 HOSTLD_O=${_ld_o-$HOSTLD_O}
4224
4225 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4226     probe_cc depcc "$dep_cc"
4227     CCDEP=${_DEPCMD:-$DEPCMD}
4228     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4229     DEPCCFLAGS=$_flags
4230 fi
4231
4232 if $ar 2>&1 | grep -q Microsoft; then
4233     arflags="-nologo"
4234     ar_o='-out:$@'
4235 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4236     arflags="rq"
4237     ar_o='$@'
4238 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4239     arflags='-Xany -r -c'
4240     ar_o='$@'
4241 elif $ar 2>&1 | grep -q "\[D\] "; then
4242     arflags="rcD"
4243     ar_o='$@'
4244 else
4245     arflags="rc"
4246     ar_o='$@'
4247 fi
4248
4249 add_cflags $extra_cflags
4250 add_cxxflags $extra_cxxflags
4251 add_objcflags $extra_objcflags
4252 add_asflags $extra_cflags
4253
4254 if test -n "$sysroot"; then
4255     case "$cc_type" in
4256         gcc|llvm_gcc|clang)
4257             add_cppflags --sysroot="$sysroot"
4258             add_ldflags --sysroot="$sysroot"
4259 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4260             add_cppflags -isysroot "$sysroot"
4261             add_ldflags -isysroot "$sysroot"
4262         ;;
4263         tms470)
4264             add_cppflags -I"$sysinclude"
4265             add_ldflags  --sysroot="$sysroot"
4266         ;;
4267     esac
4268 fi
4269
4270 if test "$cpu" = host; then
4271     enabled cross_compile &&
4272         die "--cpu=host makes no sense when cross-compiling."
4273
4274     case "$cc_type" in
4275         gcc|llvm_gcc)
4276             check_native(){
4277                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4278                 sed -n "/cc1.*$1=/{
4279                             s/.*$1=\\([^ ]*\\).*/\\1/
4280                             p
4281                             q
4282                         }" $TMPE
4283             }
4284             cpu=$(check_native -march || check_native -mcpu)
4285         ;;
4286         clang)
4287             check_native(){
4288                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4289                 sed -n "/cc1.*-target-cpu /{
4290                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4291                             p
4292                             q
4293                         }" $TMPE
4294             }
4295             cpu=$(check_native -march)
4296         ;;
4297     esac
4298
4299     test "${cpu:-host}" = host &&
4300         die "--cpu=host not supported with compiler $cc"
4301 fi
4302
4303 # Deal with common $arch aliases
4304 case "$arch" in
4305     aarch64|arm64)
4306         arch="aarch64"
4307     ;;
4308     arm*|iPad*|iPhone*)
4309         arch="arm"
4310     ;;
4311     mips*|IP*)
4312         case "$arch" in
4313         *el)
4314             add_cppflags -EL
4315             add_ldflags -EL
4316         ;;
4317         *eb)
4318             add_cppflags -EB
4319             add_ldflags -EB
4320         ;;
4321         esac
4322         arch="mips"
4323     ;;
4324     parisc*|hppa*)
4325         arch="parisc"
4326     ;;
4327     "Power Macintosh"|ppc*|powerpc*)
4328         arch="ppc"
4329     ;;
4330     s390|s390x)
4331         arch="s390"
4332     ;;
4333     sh4|sh)
4334         arch="sh4"
4335     ;;
4336     sun4*|sparc*)
4337         arch="sparc"
4338     ;;
4339     tilegx|tile-gx)
4340         arch="tilegx"
4341     ;;
4342     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4343         arch="x86"
4344     ;;
4345 esac
4346
4347 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4348 enable $arch
4349
4350 # Add processor-specific flags
4351 if enabled aarch64; then
4352
4353     case $cpu in
4354         armv*)
4355             cpuflags="-march=$cpu"
4356         ;;
4357         *)
4358             cpuflags="-mcpu=$cpu"
4359         ;;
4360     esac
4361
4362 elif enabled alpha; then
4363
4364     cpuflags="-mcpu=$cpu"
4365
4366 elif enabled arm; then
4367
4368     check_arm_arch() {
4369         check_cpp_condition stddef.h \
4370             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4371             $cpuflags
4372     }
4373
4374     probe_arm_arch() {
4375         if   check_arm_arch 4;        then echo armv4
4376         elif check_arm_arch 4T;       then echo armv4t
4377         elif check_arm_arch 5;        then echo armv5
4378         elif check_arm_arch 5E;       then echo armv5e
4379         elif check_arm_arch 5T;       then echo armv5t
4380         elif check_arm_arch 5TE;      then echo armv5te
4381         elif check_arm_arch 5TEJ;     then echo armv5te
4382         elif check_arm_arch 6;        then echo armv6
4383         elif check_arm_arch 6J;       then echo armv6j
4384         elif check_arm_arch 6K;       then echo armv6k
4385         elif check_arm_arch 6Z;       then echo armv6z
4386         elif check_arm_arch 6ZK;      then echo armv6zk
4387         elif check_arm_arch 6T2;      then echo armv6t2
4388         elif check_arm_arch 7;        then echo armv7
4389         elif check_arm_arch 7A  7_A;  then echo armv7-a
4390         elif check_arm_arch 7S;       then echo armv7-a
4391         elif check_arm_arch 7R  7_R;  then echo armv7-r
4392         elif check_arm_arch 7M  7_M;  then echo armv7-m
4393         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4394         elif check_arm_arch 8A  8_A;  then echo armv8-a
4395         fi
4396     }
4397
4398     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4399
4400     case $cpu in
4401         armv*)
4402             cpuflags="-march=$cpu"
4403             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4404         ;;
4405         *)
4406             cpuflags="-mcpu=$cpu"
4407             case $cpu in
4408                 cortex-a*)                               subarch=armv7a  ;;
4409                 cortex-r*)                               subarch=armv7r  ;;
4410                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4411                 arm11*)                                  subarch=armv6   ;;
4412                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4413                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4414                 *)                             subarch=$(probe_arm_arch) ;;
4415             esac
4416         ;;
4417     esac
4418
4419     case "$subarch" in
4420         armv5t*)    enable fast_clz                ;;
4421         armv[6-8]*)
4422             enable fast_clz
4423             disabled fast_unaligned || enable fast_unaligned
4424             ;;
4425     esac
4426
4427 elif enabled avr32; then
4428
4429     case $cpu in
4430         ap7[02]0[0-2])
4431             subarch="avr32_ap"
4432             cpuflags="-mpart=$cpu"
4433         ;;
4434         ap)
4435             subarch="avr32_ap"
4436             cpuflags="-march=$cpu"
4437         ;;
4438         uc3[ab]*)
4439             subarch="avr32_uc"
4440             cpuflags="-mcpu=$cpu"
4441         ;;
4442         uc)
4443             subarch="avr32_uc"
4444             cpuflags="-march=$cpu"
4445         ;;
4446     esac
4447
4448 elif enabled bfin; then
4449
4450     cpuflags="-mcpu=$cpu"
4451
4452 elif enabled mips; then
4453
4454     cpuflags="-march=$cpu"
4455
4456     if [ "$cpu" != "generic" ]; then
4457         disable mips32r2
4458         disable mips32r5
4459         disable mips64r2
4460         disable mips32r6
4461         disable mips64r6
4462         disable loongson2
4463         disable loongson3
4464
4465         case $cpu in
4466             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4467                 enable mips32r2
4468                 disable msa
4469             ;;
4470             p5600|i6400|p6600)
4471                 disable mipsdsp
4472                 disable mipsdspr2
4473             ;;
4474             loongson*)
4475                 enable loongson2
4476                 enable loongson3
4477                 enable local_aligned_8 local_aligned_16 local_aligned_32
4478                 enable simd_align_16
4479                 enable fast_64bit
4480                 enable fast_clz
4481                 enable fast_cmov
4482                 enable fast_unaligned
4483                 disable aligned_stack
4484                 disable mipsfpu
4485                 disable mipsdsp
4486                 disable mipsdspr2
4487                 case $cpu in
4488                     loongson3*)
4489                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4490                     ;;
4491                     loongson2e)
4492                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4493                     ;;
4494                     loongson2f)
4495                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4496                     ;;
4497                 esac
4498             ;;
4499             *)
4500                 # Unknown CPU. Disable everything.
4501                 warn "unknown CPU. Disabling all MIPS optimizations."
4502                 disable mipsfpu
4503                 disable mipsdsp
4504                 disable mipsdspr2
4505                 disable msa
4506                 disable mmi
4507             ;;
4508         esac
4509
4510         case $cpu in
4511             24kc)
4512                 disable mipsfpu
4513                 disable mipsdsp
4514                 disable mipsdspr2
4515             ;;
4516             24kf*)
4517                 disable mipsdsp
4518                 disable mipsdspr2
4519             ;;
4520             24kec|34kc|1004kc)
4521                 disable mipsfpu
4522                 disable mipsdspr2
4523             ;;
4524             24kef*|34kf*|1004kf*)
4525                 disable mipsdspr2
4526             ;;
4527             74kc)
4528                 disable mipsfpu
4529             ;;
4530             p5600)
4531                 enable mips32r5
4532                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4533             ;;
4534             i6400)
4535                 enable mips64r6
4536                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4537             ;;
4538             p6600)
4539                 enable mips64r6
4540                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4541             ;;
4542         esac
4543     else
4544         # We do not disable anything. Is up to the user to disable the unwanted features.
4545         warn 'generic cpu selected'
4546     fi
4547
4548 elif enabled ppc; then
4549
4550     disable ldbrx
4551
4552     case $(tolower $cpu) in
4553         601|ppc601|powerpc601)
4554             cpuflags="-mcpu=601"
4555             disable altivec
4556         ;;
4557         603*|ppc603*|powerpc603*)
4558             cpuflags="-mcpu=603"
4559             disable altivec
4560         ;;
4561         604*|ppc604*|powerpc604*)
4562             cpuflags="-mcpu=604"
4563             disable altivec
4564         ;;
4565         g3|75*|ppc75*|powerpc75*)
4566             cpuflags="-mcpu=750"
4567             disable altivec
4568         ;;
4569         g4|745*|ppc745*|powerpc745*)
4570             cpuflags="-mcpu=7450"
4571             disable vsx
4572         ;;
4573         74*|ppc74*|powerpc74*)
4574             cpuflags="-mcpu=7400"
4575             disable vsx
4576         ;;
4577         g5|970|ppc970|powerpc970)
4578             cpuflags="-mcpu=970"
4579             disable vsx
4580         ;;
4581         power[3-6]*)
4582             cpuflags="-mcpu=$cpu"
4583             disable vsx
4584         ;;
4585         power[7-8]*)
4586             cpuflags="-mcpu=$cpu"
4587         ;;
4588         cell)
4589             cpuflags="-mcpu=cell"
4590             enable ldbrx
4591             disable vsx
4592         ;;
4593         e500mc)
4594             cpuflags="-mcpu=e500mc"
4595             disable altivec
4596         ;;
4597         e500v2)
4598             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4599             disable altivec
4600             disable dcbzl
4601         ;;
4602         e500)
4603             cpuflags="-mcpu=8540 -mhard-float"
4604             disable altivec
4605             disable dcbzl
4606         ;;
4607     esac
4608
4609 elif enabled sparc; then
4610
4611     case $cpu in
4612         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4613             cpuflags="-mcpu=$cpu"
4614         ;;
4615         ultrasparc*|niagara[234])
4616             cpuflags="-mcpu=$cpu"
4617         ;;
4618     esac
4619
4620 elif enabled x86; then
4621
4622     case $cpu in
4623         i[345]86|pentium)
4624             cpuflags="-march=$cpu"
4625             disable i686
4626             disable mmx
4627         ;;
4628         # targets that do NOT support nopl and conditional mov (cmov)
4629         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4630             cpuflags="-march=$cpu"
4631             disable i686
4632         ;;
4633         # targets that do support nopl and conditional mov (cmov)
4634         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4635         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4636         |amdfam10|barcelona|b[dt]ver*|znver*)
4637             cpuflags="-march=$cpu"
4638             enable i686
4639             enable fast_cmov
4640         ;;
4641         # targets that do support conditional mov but on which it's slow
4642         pentium4|pentium4m|prescott|nocona)
4643             cpuflags="-march=$cpu"
4644             enable i686
4645             disable fast_cmov
4646         ;;
4647     esac
4648
4649 fi
4650
4651 if [ "$cpu" != generic ]; then
4652     add_cflags  $cpuflags
4653     add_asflags $cpuflags
4654     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4655 fi
4656
4657 # compiler sanity check
4658 check_exec <<EOF
4659 int main(void){ return 0; }
4660 EOF
4661 if test "$?" != 0; then
4662     echo "$cc is unable to create an executable file."
4663     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4664         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4665         echo "Only do this if you know what cross compiling means."
4666     fi
4667     die "C compiler test failed."
4668 fi
4669
4670 add_cppflags -D_ISOC99_SOURCE
4671 add_cxxflags -D__STDC_CONSTANT_MACROS
4672 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4673
4674 # some compilers silently accept -std=c11, so we also need to check that the
4675 # version macro is defined properly
4676 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4677     add_cflags -std=c11
4678 else
4679     check_cflags -std=c99
4680 fi
4681
4682 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4683 #include <stdlib.h>
4684 EOF
4685 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4686 #include <stdlib.h>
4687 EOF
4688
4689 add_host_cppflags -D_ISOC99_SOURCE
4690 check_host_cflags -std=c99
4691 check_host_cflags -Wall
4692 check_host_cflags -O3
4693
4694 check_64bit(){
4695     arch32=$1
4696     arch64=$2
4697     expr=$3
4698     check_code cc "" "int test[2*($expr) - 1]" &&
4699         subarch=$arch64 || subarch=$arch32
4700 }
4701
4702 case "$arch" in
4703     aarch64|alpha|ia64)
4704         spic=$shared
4705     ;;
4706     mips)
4707         check_64bit mips mips64 '_MIPS_SIM > 1'
4708         spic=$shared
4709     ;;
4710     parisc)
4711         check_64bit parisc parisc64 'sizeof(void *) > 4'
4712         spic=$shared
4713     ;;
4714     ppc)
4715         check_64bit ppc ppc64 'sizeof(void *) > 4'
4716         spic=$shared
4717     ;;
4718     s390)
4719         check_64bit s390 s390x 'sizeof(void *) > 4'
4720         spic=$shared
4721     ;;
4722     sparc)
4723         check_64bit sparc sparc64 'sizeof(void *) > 4'
4724         spic=$shared
4725     ;;
4726     x86)
4727         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4728         # Treat x32 as x64 for now. Note it also needs spic=$shared
4729         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4730             subarch=x86_64
4731         if test "$subarch" = "x86_64"; then
4732             spic=$shared
4733         fi
4734     ;;
4735     ppc)
4736         check_cc <<EOF && subarch="ppc64"
4737         int test[(int)sizeof(char*) - 7];
4738 EOF
4739     ;;
4740 esac
4741
4742 enable $subarch
4743 enabled spic && enable_weak pic
4744
4745 # OS specific
4746 case $target_os in
4747     aix)
4748         SHFLAGS=-shared
4749         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4750         enabled shared && add_ldflags -Wl,-brtl
4751         ;;
4752     android)
4753         disable symver
4754         enable section_data_rel_ro
4755         SLIB_INSTALL_NAME='$(SLIBNAME)'
4756         SLIB_INSTALL_LINKS=
4757         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4758         ;;
4759     haiku)
4760         prefix_default="/boot/common"
4761         network_extralibs="-lnetwork"
4762         host_extralibs=
4763         ;;
4764     sunos)
4765         SHFLAGS='-shared -Wl,-h,$$(@F)'
4766         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4767         network_extralibs="-lsocket -lnsl"
4768         add_cppflags -D__EXTENSIONS__
4769         # When using suncc to build, the Solaris linker will mark
4770         # an executable with each instruction set encountered by
4771         # the Solaris assembler.  As our libraries contain their own
4772         # guards for processor-specific code, instead suppress
4773         # generation of the HWCAPS ELF section on Solaris x86 only.
4774         enabled_all suncc x86 &&
4775             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4776             add_ldflags -Wl,-M,mapfile
4777         nm_default='nm -P -g'
4778         version_script='-M'
4779         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4780         ;;
4781     netbsd)
4782         disable symver
4783         oss_indev_extralibs="-lossaudio"
4784         oss_outdev_extralibs="-lossaudio"
4785         enabled gcc || check_ldflags -Wl,-zmuldefs
4786         ;;
4787     openbsd|bitrig)
4788         disable symver
4789         SHFLAGS='-shared'
4790         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4791         SLIB_INSTALL_LINKS=
4792         oss_indev_extralibs="-lossaudio"
4793         oss_outdev_extralibs="-lossaudio"
4794         ;;
4795     dragonfly)
4796         disable symver
4797         ;;
4798     freebsd)
4799         ;;
4800     bsd/os)
4801         add_extralibs -lpoll -lgnugetopt
4802         strip="strip -d"
4803         ;;
4804     darwin)
4805         enabled ppc && add_asflags -force_cpusubtype_ALL
4806         install_name_dir_default='$(SHLIBDIR)'
4807         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4808         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4809         strip="${strip} -x"
4810         add_ldflags -Wl,-dynamic,-search_paths_first
4811         SLIBSUF=".dylib"
4812         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4813         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4814         objformat="macho"
4815         enabled x86_64 && objformat="macho64"
4816         enabled_any pic shared x86_64 ||
4817             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4818         check_header dispatch/dispatch.h &&
4819             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4820         version_script='-exported_symbols_list'
4821         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4822         ;;
4823     msys*)
4824         die "Native MSYS builds are discouraged, please use the MINGW environment."
4825         ;;
4826     mingw32*|mingw64*)
4827         if test $target_os = "mingw32ce"; then
4828             disable network
4829         else
4830             target_os=mingw32
4831         fi
4832         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4833         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4834         LIBTARGET=i386
4835         if enabled x86_64; then
4836             LIBTARGET="i386:x86-64"
4837         elif enabled arm; then
4838             LIBTARGET=arm-wince
4839         fi
4840         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4841         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4842         shlibdir_default="$bindir_default"
4843         SLIBPREF=""
4844         SLIBSUF=".dll"
4845         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4846         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4847         dlltool="${cross_prefix}dlltool"
4848         if check_cmd lib.exe -list; then
4849             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4850             if enabled x86_64; then
4851                 LIBTARGET=x64
4852             fi
4853         elif check_cmd $dlltool --version; then
4854             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4855         fi
4856         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4857         SLIB_INSTALL_LINKS=
4858         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4859         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4860         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4861         objformat="win32"
4862         ranlib=:
4863         enable dos_paths
4864         check_ldflags -Wl,--nxcompat,--dynamicbase
4865         # Lets work around some stupidity in binutils.
4866         # ld will strip relocations from executables even though we need them
4867         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4868         # however ld then forgets what the entry point should be (oops) so we
4869         # have to manually (re)set it.
4870         if enabled x86_32; then
4871             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4872         elif enabled x86_64; then
4873             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4874             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4875             # Set image base >4GB for extra entropy with HEASLR
4876             add_ldexeflags -Wl,--image-base,0x140000000
4877             append SHFLAGS -Wl,--image-base,0x180000000
4878         fi
4879         ;;
4880     win32|win64)
4881         disable symver
4882         if enabled shared; then
4883             # Link to the import library instead of the normal static library
4884             # for shared libs.
4885             LD_LIB='%.lib'
4886             # Cannot build both shared and static libs with MSVC or icl.
4887             disable static
4888         fi
4889         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4890         shlibdir_default="$bindir_default"
4891         SLIBPREF=""
4892         SLIBSUF=".dll"
4893         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4894         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4895         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4896         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4897         SLIB_INSTALL_LINKS=
4898         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4899         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4900         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4901         objformat="win32"
4902         ranlib=:
4903         enable dos_paths
4904         ;;
4905     cygwin*)
4906         target_os=cygwin
4907         shlibdir_default="$bindir_default"
4908         SLIBPREF="cyg"
4909         SLIBSUF=".dll"
4910         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4911         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4912         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4913         SLIB_INSTALL_LINKS=
4914         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4915         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4916         objformat="win32"
4917         enable dos_paths
4918         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4919         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4920         ;;
4921     *-dos|freedos|opendos)
4922         network_extralibs="-lsocket"
4923         objformat="coff"
4924         enable dos_paths
4925         add_cppflags -U__STRICT_ANSI__
4926         ;;
4927     linux)
4928         enable dv1394
4929         enable section_data_rel_ro
4930         ;;
4931     irix*)
4932         target_os=irix
4933         ranlib="echo ignoring ranlib"
4934         ;;
4935     os/2*)
4936         strip="lxlite -CS"
4937         objformat="aout"
4938         add_cppflags -D_GNU_SOURCE
4939         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4940         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4941         LIBSUF="_s.a"
4942         SLIBPREF=""
4943         SLIBSUF=".dll"
4944         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4945         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4946         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4947             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4948             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4949             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4950             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4951         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4952             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4953         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4954         SLIB_INSTALL_LINKS=
4955         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4956         enable dos_paths
4957         enable_weak os2threads
4958         ;;
4959     gnu/kfreebsd)
4960         add_cppflags -D_BSD_SOURCE
4961         ;;
4962     gnu)
4963         ;;
4964     qnx)
4965         add_cppflags -D_QNX_SOURCE
4966         network_extralibs="-lsocket"
4967         ;;
4968     symbian)
4969         SLIBSUF=".dll"
4970         enable dos_paths
4971         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4972         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4973         add_ldflags -Wl,--target1-abs,--no-undefined \
4974                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4975                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4976         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4977                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4978                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4979         ;;
4980     osf1)
4981         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4982         ;;
4983     minix)
4984         ;;
4985     none)
4986         ;;
4987     *)
4988         die "Unknown OS '$target_os'."
4989         ;;
4990 esac
4991
4992 # test if creating links works
4993 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4994 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4995 mkdir "$link_dest"
4996 $ln_s "$link_dest" "$link_name"
4997 touch "$link_dest/test_file"
4998 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4999     # create link to source path
5000     [ -e src ] && rm src
5001     $ln_s "$source_path" src
5002     source_link=src
5003 else
5004     # creating directory links doesn't work
5005     # fall back to using the full source path
5006     source_link="$source_path"
5007 fi
5008 # cleanup
5009 rm -r "$link_dest"
5010 rm -r "$link_name"
5011
5012 # determine libc flavour
5013
5014 probe_libc(){
5015     pfx=$1
5016     pfx_no_=${pfx%_}
5017     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5018     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5019         eval ${pfx}libc_type=uclibc
5020         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5021     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5022         eval ${pfx}libc_type=glibc
5023         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5024     # MinGW headers can be installed on Cygwin, so check for newlib first.
5025     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5026         eval ${pfx}libc_type=newlib
5027         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5028     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5029     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5030         eval ${pfx}libc_type=mingw64
5031         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5032             add_compat msvcrt/snprintf.o
5033             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5034         fi
5035         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5036         eval test \$${pfx_no_}cc_type = "gcc" &&
5037             add_${pfx}cppflags -D__printf__=__gnu_printf__
5038     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5039          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5040         eval ${pfx}libc_type=mingw32
5041         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5042             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5043             die "ERROR: MinGW32 runtime version must be >= 3.15."
5044         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5045         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5046             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5047         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5048             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5049         eval test \$${pfx_no_}cc_type = "gcc" &&
5050             add_${pfx}cppflags -D__printf__=__gnu_printf__
5051     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5052         eval ${pfx}libc_type=msvcrt
5053         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5054             if [ "$pfx" = host_ ]; then
5055                 add_host_cppflags -Dsnprintf=_snprintf
5056             else
5057                 add_compat strtod.o strtod=avpriv_strtod
5058                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5059                                              _snprintf=avpriv_snprintf  \
5060                                              vsnprintf=avpriv_vsnprintf
5061             fi
5062         fi
5063         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5064         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5065         # 0x601 by default unless something else is set by the user.
5066         # This can easily lead to us detecting functions only present
5067         # in such new versions and producing binaries requiring windows 7.0.
5068         # Therefore explicitly set the default to XP unless the user has
5069         # set something else on the command line.
5070         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5071         # family. For these cases, configure is free to use any functions
5072         # found in the SDK headers by default. (Alternatively, we could force
5073         # _WIN32_WINNT to 0x0602 in that case.)
5074         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5075             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5076 #ifdef WINAPI_FAMILY
5077 #include <winapifamily.h>
5078 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5079 #error not desktop
5080 #endif
5081 #endif
5082 EOF
5083         if [ "$pfx" = "" ]; then
5084             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5085             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5086         fi
5087     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5088         eval ${pfx}libc_type=klibc
5089     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5090         eval ${pfx}libc_type=bionic
5091     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5092         eval ${pfx}libc_type=solaris
5093         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5094     fi
5095     check_${pfx}cc <<EOF
5096 #include <time.h>
5097 void *v = localtime_r;
5098 EOF
5099 test "$?" != 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
5100 #include <time.h>
5101 void *v = localtime_r;
5102 EOF
5103
5104 }
5105
5106 probe_libc
5107 test -n "$libc_type" && enable libc_$libc_type
5108 probe_libc host_
5109 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5110
5111 case $libc_type in
5112     bionic)
5113         add_compat strtod.o strtod=avpriv_strtod
5114         ;;
5115 esac
5116
5117 # hacks for compiler/libc/os combinations
5118
5119 if enabled_all tms470 libc_glibc; then
5120     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5121     add_cppflags -D__USER_LABEL_PREFIX__=
5122     add_cppflags -D__builtin_memset=memset
5123     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5124     add_cflags   -pds=48    # incompatible redefinition of macro
5125 fi
5126
5127 if enabled_all ccc libc_glibc; then
5128     add_ldflags -Wl,-z,now  # calls to libots crash without this
5129 fi
5130
5131 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5132     add_cppflags '-I\$(SRC_PATH)/compat/float'
5133
5134 esc(){
5135     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5136 }
5137
5138 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5139
5140 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5141
5142 set_default libdir
5143 : ${shlibdir_default:="$libdir"}
5144 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5145
5146 set_default $PATHS_LIST
5147 set_default nm
5148
5149 # we need to build at least one lib type
5150 if ! enabled_any static shared; then
5151     cat <<EOF
5152 At least one library type must be built.
5153 Specify --enable-static to build the static libraries or --enable-shared to
5154 build the shared libraries as well. To only build the shared libraries specify
5155 --disable-static in addition to --enable-shared.
5156 EOF
5157     exit 1
5158 fi
5159
5160 disabled optimizations || check_cflags -fomit-frame-pointer
5161
5162 enable_weak_pic() {
5163     disabled pic && return
5164     enable pic
5165     add_cppflags -DPIC
5166     case "$target_os" in
5167     mingw*|cygwin*)
5168         ;;
5169     *)
5170         add_cflags -fPIC
5171         ;;
5172     esac
5173     add_asflags  -fPIC
5174 }
5175
5176 enabled pic && enable_weak_pic
5177
5178 check_cc <<EOF || die "Symbol mangling check failed."
5179 int ff_extern;
5180 EOF
5181 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5182 extern_prefix=${sym%%ff_extern*}
5183
5184 check_cc <<EOF && enable_weak inline_asm
5185 void foo(void) { __asm__ volatile ("" ::); }
5186 EOF
5187
5188 _restrict=
5189 for restrict_keyword in restrict __restrict__ __restrict; do
5190     check_cc <<EOF && _restrict=$restrict_keyword && break
5191 void foo(char * $restrict_keyword p);
5192 EOF
5193 done
5194
5195 check_cc <<EOF && enable pragma_deprecated
5196 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5197 EOF
5198
5199 check_cc <<EOF && enable attribute_packed
5200 struct { int x; } __attribute__((packed)) x;
5201 EOF
5202
5203 check_cc <<EOF && enable attribute_may_alias
5204 union { int x; } __attribute__((may_alias)) x;
5205 EOF
5206
5207 check_cc <<EOF || die "endian test failed"
5208 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5209 EOF
5210 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5211
5212 if ! enabled ppc64 || enabled bigendian; then
5213     disable vsx
5214 fi
5215
5216 check_gas() {
5217     log "check_gas using '$as' as AS"
5218     # :vararg is used on aarch64, arm and ppc altivec
5219     check_as <<EOF || return 1
5220 .macro m n, y:vararg=0
5221 \n: .int \y
5222 .endm
5223 m x
5224 EOF
5225     # .altmacro is only used in arm asm
5226     ! enabled arm || check_as <<EOF || return 1
5227 .altmacro
5228 EOF
5229     enable gnu_as
5230     return 0
5231 }
5232
5233 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5234     nogas=:
5235     enabled_any arm aarch64 && nogas=die
5236     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5237     as_noop=-v
5238
5239     case $as_type in
5240         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5241         gcc)  gaspp_as_type=gas ;;
5242         *)    gaspp_as_type=$as_type ;;
5243     esac
5244
5245     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5246
5247     test "${as#*gas-preprocessor.pl}" != "$as" ||
5248     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5249         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5250
5251     if ! check_gas ; then
5252         as=${gas:=$as}
5253         check_gas || \
5254             $nogas "GNU assembler not found, install/update gas-preprocessor"
5255     fi
5256
5257     check_as <<EOF && enable as_func
5258 .func test
5259 .endfunc
5260 EOF
5261 fi
5262
5263 check_inline_asm inline_asm_labels '"1:\n"'
5264
5265 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5266
5267 if enabled aarch64; then
5268     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5269     # internal assembler in clang 3.3 does not support this instruction
5270     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5271     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5272
5273     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5274
5275 elif enabled alpha; then
5276
5277     check_cflags -mieee
5278
5279 elif enabled arm; then
5280
5281     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5282
5283     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5284 float func(float a, float b){ return a+b; }
5285 EOF
5286
5287     enabled thumb && check_cflags -mthumb || check_cflags -marm
5288
5289     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5290         enable vfp_args
5291     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5292         enable vfp_args
5293     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5294         case "${cross_prefix:-$cc}" in
5295             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5296             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5297 __asm__ (".eabi_attribute 28, 1");
5298 int main(void) { return 0; }
5299 EOF
5300         esac
5301         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5302     fi
5303
5304     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5305     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5306     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5307     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5308     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5309     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5310     enabled setend  && check_insn setend  'setend be'
5311
5312     [ $target_os = linux ] || [ $target_os = android ] ||
5313         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5314             $ARCH_EXT_LIST_ARM
5315
5316     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5317
5318     check_as <<EOF && enable as_dn_directive
5319 ra .dn d0.i16
5320 .unreq ra
5321 EOF
5322     check_as <<EOF && enable as_fpu_directive
5323 .fpu neon
5324 EOF
5325
5326     # llvm's integrated assembler supports .object_arch from llvm 3.5
5327     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5328 .object_arch armv4
5329 EOF
5330
5331     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5332
5333 elif enabled mips; then
5334
5335     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5336     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5337     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5338
5339     # Enable minimum ISA based on selected options
5340     if enabled mips64; then
5341         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5342         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5343         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5344     else
5345         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5346         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5347         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5348         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5349     fi
5350
5351     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5352     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5353     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5354     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5355     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5356
5357 elif enabled parisc; then
5358
5359     if enabled gcc; then
5360         case $($cc -dumpversion) in
5361             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5362         esac
5363     fi
5364
5365 elif enabled ppc; then
5366
5367     enable local_aligned_8 local_aligned_16 local_aligned_32
5368
5369     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5370     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5371     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5372     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5373
5374     # AltiVec flags: The FSF version of GCC differs from the Apple version
5375     if enabled altivec; then
5376         check_cflags -maltivec -mabi=altivec &&
5377         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5378         check_cflags -faltivec
5379
5380         # check if our compiler supports Motorola AltiVec C API
5381         check_cc <<EOF || disable altivec
5382 $inc_altivec_h
5383 int main(void) {
5384     vector signed int v1 = (vector signed int) { 0 };
5385     vector signed int v2 = (vector signed int) { 1 };
5386     v1 = vec_add(v1, v2);
5387     return 0;
5388 }
5389 EOF
5390
5391         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5392     fi
5393
5394     if enabled vsx; then
5395         check_cflags -mvsx &&
5396         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5397     fi
5398
5399     if enabled power8; then
5400         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5401     fi
5402
5403 elif enabled x86; then
5404
5405     check_builtin rdtsc    intrin.h   "__rdtsc()"
5406     check_builtin mm_empty mmintrin.h "_mm_empty()"
5407
5408     enable local_aligned_8 local_aligned_16 local_aligned_32
5409
5410     # check whether EBP is available on x86
5411     # As 'i' is stored on the stack, this program will crash
5412     # if the base pointer is used to access it because the
5413     # base pointer is cleared in the inline assembly code.
5414     check_exec_crash <<EOF && enable ebp_available
5415 volatile int i=0;
5416 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5417 return i;
5418 EOF
5419
5420     # check whether EBX is available on x86
5421     check_inline_asm ebx_available '""::"b"(0)' &&
5422         check_inline_asm ebx_available '"":::"%ebx"'
5423
5424     # check whether xmm clobbers are supported
5425     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5426
5427     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5428         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5429
5430     # check whether binutils is new enough to compile SSSE3/MMXEXT
5431     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5432     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5433
5434     if ! disabled_any asm mmx yasm; then
5435         if check_cmd $yasmexe --version; then
5436             enabled x86_64 && yasm_extra="-m amd64"
5437             yasm_debug="-g dwarf2"
5438         elif check_cmd nasm -v; then
5439             yasmexe=nasm
5440             yasm_debug="-g -F dwarf"
5441             if enabled x86_64; then
5442                 case "$objformat" in
5443                     elf)   objformat=elf64 ;;
5444                     win32) objformat=win64 ;;
5445                 esac
5446             fi
5447         fi
5448
5449         YASMFLAGS="-f $objformat $yasm_extra"
5450         enabled pic               && append YASMFLAGS "-DPIC"
5451         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5452         case "$objformat" in
5453             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5454         esac
5455
5456         check_yasm "movbe ecx, [5]" && enable yasm ||
5457             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5458         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5459         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5460         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5461         check_yasm "CPU amdnop" || disable cpunop
5462     fi
5463
5464     case "$cpu" in
5465         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5466             disable fast_clz
5467         ;;
5468     esac
5469
5470 fi
5471
5472 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5473
5474 check_ldflags -Wl,--as-needed
5475 check_ldflags -Wl,-z,noexecstack
5476
5477 if check_func dlopen && check_func dlsym; then
5478     ldl=
5479 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5480     ldl=-ldl
5481 fi
5482
5483 avisynth_demuxer_extralibs='$ldl'
5484 cuda_extralibs='$ldl'
5485 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5486 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5487 frei0r_filter_extralibs='$ldl'
5488 frei0r_src_filter_extralibs='$ldl'
5489 ladspa_filter_extralibs='$ldl'
5490 nvenc_extralibs='$ldl'
5491 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5492 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5493
5494 if ! disabled network; then
5495     check_func getaddrinfo $network_extralibs
5496     check_func inet_aton $network_extralibs
5497
5498     check_type netdb.h "struct addrinfo"
5499     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5500     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5501     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5502     check_type poll.h "struct pollfd"
5503     check_type netinet/sctp.h "struct sctp_event_subscribe"
5504     check_struct "sys/socket.h" "struct msghdr" msg_flags
5505     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5506     check_type netinet/in.h "struct sockaddr_in6"
5507     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5508     check_type "sys/types.h sys/socket.h" socklen_t
5509
5510     # Prefer arpa/inet.h over winsock2
5511     if check_header arpa/inet.h ; then
5512         check_func closesocket
5513     elif check_header winsock2.h ; then
5514         check_func_headers winsock2.h closesocket -lws2 &&
5515             network_extralibs="-lws2" ||
5516         { check_func_headers winsock2.h closesocket -lws2_32 &&
5517             network_extralibs="-lws2_32"; } || disable winsock2_h network
5518         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5519
5520         check_type ws2tcpip.h socklen_t
5521         check_type ws2tcpip.h "struct addrinfo"
5522         check_type ws2tcpip.h "struct group_source_req"
5523         check_type ws2tcpip.h "struct ip_mreq_source"
5524         check_type ws2tcpip.h "struct ipv6_mreq"
5525         check_type winsock2.h "struct pollfd"
5526         check_struct winsock2.h "struct sockaddr" sa_len
5527         check_type ws2tcpip.h "struct sockaddr_in6"
5528         check_type ws2tcpip.h "struct sockaddr_storage"
5529     else
5530         disable network
5531     fi
5532 fi
5533
5534 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5535 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5536 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5537 check_builtin sarestart signal.h "SA_RESTART"
5538 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5539 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5540 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5541 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5542 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5543
5544 case "$custom_allocator" in
5545     jemalloc)
5546         # jemalloc by default does not use a prefix
5547         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5548     ;;
5549     tcmalloc)
5550         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5551         malloc_prefix=tc_
5552     ;;
5553 esac
5554
5555 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5556 check_func  ${malloc_prefix}memalign            && enable memalign
5557 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5558
5559 check_func  access
5560 check_func_headers stdlib.h arc4random
5561 check_func_headers time.h clock_gettime ||
5562     { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
5563 check_func  fcntl
5564 check_func  fork
5565 check_func  gethrtime
5566 check_func  getopt
5567 check_func  getrusage
5568 check_func  gettimeofday
5569 check_func  isatty
5570 check_func  mach_absolute_time
5571 check_func  mkstemp
5572 check_func  mmap
5573 check_func  mprotect
5574 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5575 check_func_headers time.h nanosleep ||
5576     { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
5577 check_func  sched_getaffinity
5578 check_func  setrlimit
5579 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5580 check_func  strerror_r
5581 check_func  sysconf
5582 check_func  sysctl
5583 check_func  usleep
5584
5585 check_func_headers conio.h kbhit
5586 check_func_headers io.h setmode
5587 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5588 check_func_headers stdlib.h getenv
5589 check_func_headers sys/stat.h lstat
5590
5591 check_func_headers windows.h GetProcessAffinityMask
5592 check_func_headers windows.h GetProcessTimes
5593 check_func_headers windows.h GetSystemTimeAsFileTime
5594 check_func_headers windows.h LoadLibrary
5595 check_func_headers windows.h MapViewOfFile
5596 check_func_headers windows.h PeekNamedPipe
5597 check_func_headers windows.h SetConsoleTextAttribute
5598 check_func_headers windows.h SetConsoleCtrlHandler
5599 check_func_headers windows.h Sleep
5600 check_func_headers windows.h VirtualAlloc
5601 check_struct windows.h "CONDITION_VARIABLE" Ptr
5602 check_func_headers glob.h glob
5603 enabled xlib &&
5604     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5605
5606 check_header AudioToolbox/AudioToolbox.h
5607 check_header direct.h
5608 check_header dirent.h
5609 check_header dlfcn.h
5610 check_header d3d11.h
5611 check_header dxva.h
5612 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5613 check_header io.h
5614 check_header libcrystalhd/libcrystalhd_if.h
5615 check_header mach/mach_time.h
5616 check_header malloc.h
5617 check_header net/udplite.h
5618 check_header poll.h
5619 check_header sys/mman.h
5620 check_header sys/param.h
5621 check_header sys/resource.h
5622 check_header sys/select.h
5623 check_header sys/time.h
5624 check_header sys/un.h
5625 check_header termios.h
5626 check_header unistd.h
5627 check_header valgrind/valgrind.h
5628 check_header VideoDecodeAcceleration/VDADecoder.h
5629 check_header VideoToolbox/VideoToolbox.h
5630 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5631 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5632 check_header windows.h
5633 check_header X11/extensions/XvMClib.h
5634 check_header asm/types.h
5635
5636 # it seems there are versions of clang in some distros that try to use the
5637 # gcc headers, which explodes for stdatomic
5638 # so we also check that atomics actually work here
5639 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5640
5641 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5642 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5643 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5644
5645 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5646
5647 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5648
5649 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5650 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5651 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5652 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5653 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5654
5655 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5656 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5657 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5658 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5659 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5660 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5661 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5662 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5663
5664 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5665
5666 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5667
5668 if ! disabled w32threads && ! enabled pthreads; then
5669     check_func_headers "windows.h process.h" _beginthreadex &&
5670         enable w32threads || disable w32threads
5671     if ! enabled w32threads && enabled winrt; then
5672         check_func_headers "windows.h" CreateThread &&
5673             enable w32threads || disable w32threads
5674     fi
5675 fi
5676
5677 # check for some common methods of building with pthread support
5678 # do this before the optional library checks as some of them require pthreads
5679 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5680     enable pthreads
5681     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5682         add_cflags -pthread
5683         add_extralibs -pthread
5684     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5685         add_cflags -pthreads
5686         add_extralibs -pthreads
5687     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5688         add_cflags -ldl -pthread
5689         add_extralibs -ldl -pthread
5690     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5691         add_extralibs -lpthreadGC2
5692     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5693         :
5694     elif ! check_func pthread_join && ! check_func pthread_create; then
5695         disable pthreads
5696     fi
5697     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5698 fi
5699
5700
5701 if enabled pthreads; then
5702   check_func pthread_cancel
5703 fi
5704
5705 enabled pthreads &&
5706     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5707
5708 disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
5709 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
5710 disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
5711
5712 check_lib math.h sin -lm && LIBM="-lm"
5713 disabled crystalhd || check_lib "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5714
5715 atan2f_args=2
5716 copysign_args=2
5717 hypot_args=2
5718 ldexpf_args=2
5719 powf_args=2
5720
5721 for func in $MATH_FUNCS; do
5722     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5723 done
5724
5725 for func in $COMPLEX_FUNCS; do
5726     eval check_complexfunc $func \${${func}_args:-1}
5727 done
5728
5729 # these are off by default, so fail if requested and not available
5730 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5731 enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5732                                 check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5733 enabled cuda              && check_header cuda.h # this is not a dependency
5734 enabled cuvid             && { enabled cuda ||
5735                                die "ERROR: CUVID requires CUDA"; }
5736 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5737 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5738 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5739 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5740                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5741 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5742 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5743 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5744 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5745                                check_lib "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5746 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5747 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5748 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5749 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5750 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5751 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5752                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5753                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5754 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5755 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5756 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5757                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5758                                  warn "using libfdk without pkg-config"; } }
5759 flite_extralibs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
5760 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5761 enabled fontconfig        && enable libfontconfig
5762 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5763 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5764 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5765 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5766 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5767                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5768                                done || die "ERROR: libgsm not found"; }
5769 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5770 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5771 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5772 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5773 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5774 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5775 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5776 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5777 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5778 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5779                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5780                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5781                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5782 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5783 enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5784                                check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5785                                { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5786                                { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5787                                { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5788                                die "ERROR: libopenjpeg not found"; }
5789 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5790 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5791 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5792 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5793 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5794 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5795 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5796 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5797                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5798 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5799 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5800 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5801 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5802 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5803 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5804 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5805                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5806                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5807 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5808 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5809 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5810 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5811
5812 enabled libvpx            && {
5813     enabled libvpx_vp8_decoder && {
5814         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5815             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5816                 die "ERROR: libvpx decoder version must be >=0.9.1";
5817     }
5818     enabled libvpx_vp8_encoder && {
5819         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5820             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5821                 die "ERROR: libvpx encoder version must be >=0.9.7";
5822     }
5823     enabled libvpx_vp9_decoder && {
5824         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5825             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5826                 disable libvpx_vp9_decoder;
5827     }
5828     enabled libvpx_vp9_encoder && {
5829         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5830             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5831                 disable libvpx_vp9_encoder;
5832     }
5833     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5834         die "libvpx enabled but no supported decoders found"
5835     fi
5836 }
5837
5838 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5839 enabled libwebp           && {
5840     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5841     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5842 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5843                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5844                                  warn "using libx264 without pkg-config"; } } &&
5845                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5846                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5847                              { check_cpp_condition x264.h "X264_MPEG2" &&
5848                                enable libx262; }
5849 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5850                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5851                                die "ERROR: libx265 version must be >= 68."; }
5852 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5853 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5854 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5855 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5856 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5857                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5858                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5859 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5860 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5861                                { ! enabled cross_compile &&
5862                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5863                                  add_ldflags -L/opt/vc/lib/ &&
5864                                  check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5865                                die "ERROR: mmal not found" &&
5866                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5867 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5868 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5869                                check_lib 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5870                                die "ERROR: openal not found"; } &&
5871                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5872                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5873 enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5874                                check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5875                                die "ERROR: opencl not found"; } &&
5876                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5877                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5878                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5879 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5880                                check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5881                                check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5882                                check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5883                                die "ERROR: opengl not found."
5884                              }
5885 enabled omx_rpi           && { check_header OMX_Core.h ||
5886                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5887                                die "ERROR: OpenMAX IL headers not found"; }
5888 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5889 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5890                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5891                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5892                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5893                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5894                                die "ERROR: openssl not found"; }
5895 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5896
5897 if enabled gcrypt; then
5898     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5899     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5900         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5901         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5902         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5903             die "ERROR: gcrypt not found"
5904         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
5905     else
5906         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5907     fi
5908 fi
5909
5910 disabled sdl && disable sdl2
5911 if ! disabled sdl2; then
5912     SDL2_CONFIG="${cross_prefix}sdl2-config"
5913     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5914         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5915         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5916         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5917     else
5918       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5919         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5920         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
5921         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5922         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5923         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5924       fi
5925     fi
5926     if test $target_os = "mingw32"; then
5927         sdl2_extralibs="$sdl2_extralibs -mconsole"
5928     fi
5929 fi
5930 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
5931
5932 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5933     check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5934     enable securetransport; }
5935
5936 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5937                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5938
5939 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5940 enabled makeinfo \
5941     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5942     && enable makeinfo_html || disable makeinfo_html
5943 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5944 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5945 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5946 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5947
5948 check_header linux/fb.h
5949 check_header linux/videodev.h
5950 check_header linux/videodev2.h
5951 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5952
5953 check_header sys/videoio.h
5954 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5955
5956 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5957 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5958 # w32api 3.12 had it defined wrong
5959 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5960
5961 check_type "dshow.h" IBaseFilter
5962
5963 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5964 { check_header dev/bktr/ioctl_meteor.h &&
5965   check_header dev/bktr/ioctl_bt848.h; } ||
5966 { check_header machine/ioctl_meteor.h &&
5967   check_header machine/ioctl_bt848.h; } ||
5968 { check_header dev/video/meteor/ioctl_meteor.h &&
5969   check_header dev/video/bktr/ioctl_bt848.h; } ||
5970 check_header dev/ic/bt8xx.h
5971
5972 if check_struct sys/soundcard.h audio_buf_info bytes; then
5973     enable_safe sys/soundcard.h
5974 else
5975     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5976     #include <sys/soundcard.h>
5977     audio_buf_info abc;
5978 EOF
5979 fi
5980 check_header soundcard.h
5981
5982 enabled_any alsa_indev alsa_outdev &&
5983     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound && enable alsa
5984
5985 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack && enable jack &&
5986     check_func jack_port_get_latency_range -ljack
5987
5988 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio && enable sndio
5989
5990 if enabled libcdio; then
5991     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5992     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5993     die "ERROR: No usable libcdio/cdparanoia found"
5994 fi
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     } && 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_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6019 fi
6020 fi
6021
6022 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6023
6024 enabled dxva2api_h &&
6025     check_cc <<EOF && enable dxva2api_cobj
6026 #define _WIN32_WINNT 0x0600
6027 #define COBJMACROS
6028 #include <windows.h>
6029 #include <d3d9.h>
6030 #include <dxva2api.h>
6031 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6032 EOF
6033
6034 enabled dxva2 &&
6035     check_lib windows.h CoTaskMemFree -lole32 &&
6036     enable dxva2_lib
6037
6038 enabled vaapi &&
6039     check_lib va/va.h vaInitialize -lva ||
6040     disable vaapi
6041
6042 enabled vaapi &&
6043     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6044     disable vaapi
6045
6046 enabled vaapi &&
6047     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6048     enable vaapi_drm
6049
6050 enabled vaapi &&
6051     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11 &&
6052     enable vaapi_x11
6053
6054 enabled vdpau &&
6055     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6056     disable vdpau
6057
6058 enabled vdpau &&
6059     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11 &&
6060     enable vdpau_x11
6061
6062 if enabled x86; then
6063     case $target_os in
6064         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6065             ;;
6066         *)
6067             disable cuda cuvid nvenc
6068             ;;
6069     esac
6070 else
6071     disable cuda cuvid nvenc
6072 fi
6073
6074 enabled nvenc &&
6075     check_cc -I$source_path <<EOF || disable nvenc
6076 #include "compat/nvenc/nvEncodeAPI.h"
6077 NV_ENCODE_API_FUNCTION_LIST flist;
6078 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6079 int main(void) { return 0; }
6080 EOF
6081
6082 # Funny iconv installations are not unusual, so check it after all flags have been set
6083 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
6084
6085 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6086
6087 # add some useful compiler flags if supported
6088 check_cflags -Wdeclaration-after-statement
6089 check_cflags -Wall
6090 check_cflags -Wdisabled-optimization
6091 check_cflags -Wpointer-arith
6092 check_cflags -Wredundant-decls
6093 check_cflags -Wwrite-strings
6094 check_cflags -Wtype-limits
6095 check_cflags -Wundef
6096 check_cflags -Wmissing-prototypes
6097 check_cflags -Wno-pointer-to-int-cast
6098 check_cflags -Wstrict-prototypes
6099 check_cflags -Wempty-body
6100
6101 if enabled extra_warnings; then
6102     check_cflags -Wcast-qual
6103     check_cflags -Wextra
6104     check_cflags -Wpedantic
6105 fi
6106
6107 check_disable_warning(){
6108     warning_flag=-W${1#-Wno-}
6109     test_cflags $warning_flag && add_cflags $1
6110 }
6111
6112 check_disable_warning -Wno-parentheses
6113 check_disable_warning -Wno-switch
6114 check_disable_warning -Wno-format-zero-length
6115 check_disable_warning -Wno-pointer-sign
6116 check_disable_warning -Wno-unused-const-variable
6117
6118 check_disable_warning_headers(){
6119     warning_flag=-W${1#-Wno-}
6120     test_cflags $warning_flag && add_cflags_headers $1
6121 }
6122
6123 check_disable_warning_headers -Wno-deprecated-declarations
6124 check_disable_warning_headers -Wno-unused-variable
6125
6126 # add some linker flags
6127 check_ldflags -Wl,--warn-common
6128 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6129 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6130 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6131 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6132
6133 # add some strip flags
6134 # -wN '..@*' is more selective than -x, but not available everywhere.
6135 check_stripflags -wN \'..@*\' || check_stripflags -x
6136
6137 enabled neon_clobber_test &&
6138     check_ldflags -Wl,--wrap,avcodec_open2              \
6139                   -Wl,--wrap,avcodec_decode_audio4      \
6140                   -Wl,--wrap,avcodec_decode_video2      \
6141                   -Wl,--wrap,avcodec_decode_subtitle2   \
6142                   -Wl,--wrap,avcodec_encode_audio2      \
6143                   -Wl,--wrap,avcodec_encode_video2      \
6144                   -Wl,--wrap,avcodec_encode_subtitle    \
6145                   -Wl,--wrap,avcodec_send_packet        \
6146                   -Wl,--wrap,avcodec_receive_packet     \
6147                   -Wl,--wrap,avcodec_send_frame         \
6148                   -Wl,--wrap,avcodec_receive_frame      \
6149                   -Wl,--wrap,swr_convert                \
6150                   -Wl,--wrap,avresample_convert ||
6151     disable neon_clobber_test
6152
6153 enabled xmm_clobber_test &&
6154     check_ldflags -Wl,--wrap,avcodec_open2              \
6155                   -Wl,--wrap,avcodec_decode_audio4      \
6156                   -Wl,--wrap,avcodec_decode_video2      \
6157                   -Wl,--wrap,avcodec_decode_subtitle2   \
6158                   -Wl,--wrap,avcodec_encode_audio2      \
6159                   -Wl,--wrap,avcodec_encode_video2      \
6160                   -Wl,--wrap,avcodec_encode_subtitle    \
6161                   -Wl,--wrap,avcodec_send_packet        \
6162                   -Wl,--wrap,avcodec_receive_packet     \
6163                   -Wl,--wrap,avcodec_send_frame         \
6164                   -Wl,--wrap,avcodec_receive_frame      \
6165                   -Wl,--wrap,swr_convert                \
6166                   -Wl,--wrap,avresample_convert         \
6167                   -Wl,--wrap,sws_scale ||
6168     disable xmm_clobber_test
6169
6170 check_ld "cc" <<EOF && enable proper_dce
6171 extern const int array[512];
6172 static inline int func(void) { return array[0]; }
6173 int main(void) { return 0; }
6174 EOF
6175
6176 if enabled proper_dce; then
6177     echo "X { local: *; };" > $TMPV
6178     if test_ldflags -Wl,${version_script},$TMPV; then
6179         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6180         check_cc <<EOF && enable symver_asm_label
6181 void ff_foo(void) __asm__ ("av_foo@VERSION");
6182 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6183 EOF
6184         check_cc <<EOF && enable symver_gnu_asm
6185 __asm__(".symver ff_foo,av_foo@VERSION");
6186 void ff_foo(void) {}
6187 EOF
6188     fi
6189 fi
6190
6191 if [ -z "$optflags" ]; then
6192     if enabled small; then
6193         optflags=$cflags_size
6194     elif enabled optimizations; then
6195         optflags=$cflags_speed
6196     else
6197         optflags=$cflags_noopt
6198     fi
6199 fi
6200
6201 check_optflags(){
6202     check_cflags "$@"
6203     enabled lto && check_ldflags "$@"
6204 }
6205
6206
6207 if enabled lto; then
6208     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6209     check_cflags  -flto
6210     check_ldflags -flto $cpuflags
6211     disable inline_asm_direct_symbol_refs
6212 fi
6213
6214 check_optflags $optflags
6215 check_optflags -fno-math-errno
6216 check_optflags -fno-signed-zeros
6217
6218 enabled ftrapv && check_cflags -ftrapv
6219
6220 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6221 int x;
6222 EOF
6223
6224
6225 if enabled icc; then
6226     # Just warnings, no remarks
6227     check_cflags -w1
6228     # -wd: Disable following warnings
6229     # 144, 167, 556: -Wno-pointer-sign
6230     # 188: enumerated type mixed with another type
6231     # 1292: attribute "foo" ignored
6232     # 1419: external declaration in primary source file
6233     # 10006: ignoring unknown option -fno-signed-zeros
6234     # 10148: ignoring unknown option -Wno-parentheses
6235     # 10156: ignoring option '-W'; no argument required
6236     # 13200: No EMMS instruction before call to function
6237     # 13203: No EMMS instruction before return from function
6238     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6239     # 11030: Warning unknown option --as-needed
6240     # 10156: ignoring option '-export'; no argument required
6241     check_ldflags -wd10156,11030
6242     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6243     enable ebp_available
6244     # The test above does not test linking
6245     enabled lto && disable symver_asm_label
6246     if enabled x86_32; then
6247         icc_version=$($cc -dumpversion)
6248         test ${icc_version%%.*} -ge 11 &&
6249             check_cflags -falign-stack=maintain-16-byte ||
6250             disable aligned_stack
6251     fi
6252 elif enabled ccc; then
6253     # disable some annoying warnings
6254     add_cflags -msg_disable bitnotint
6255     add_cflags -msg_disable mixfuncvoid
6256     add_cflags -msg_disable nonstandcast
6257     add_cflags -msg_disable unsupieee
6258 elif enabled gcc; then
6259     check_optflags -fno-tree-vectorize
6260     check_cflags -Werror=format-security
6261     check_cflags -Werror=implicit-function-declaration
6262     check_cflags -Werror=missing-prototypes
6263     check_cflags -Werror=return-type
6264     check_cflags -Werror=vla
6265     check_cflags -Wformat
6266     check_cflags -fdiagnostics-color=auto
6267     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6268 elif enabled llvm_gcc; then
6269     check_cflags -mllvm -stack-alignment=16
6270 elif enabled clang; then
6271     check_cflags -mllvm -stack-alignment=16
6272     check_cflags -mstack-alignment=16
6273     check_cflags -Qunused-arguments
6274     check_cflags -Werror=implicit-function-declaration
6275     check_cflags -Werror=missing-prototypes
6276     check_cflags -Werror=return-type
6277 elif enabled cparser; then
6278     add_cflags -Wno-missing-variable-declarations
6279     add_cflags -Wno-empty-statement
6280 elif enabled armcc; then
6281     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6282     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6283     # 2523: use of inline assembly is deprecated
6284     add_cflags -W${armcc_opt},--diag_suppress=2523
6285     add_cflags -W${armcc_opt},--diag_suppress=1207
6286     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6287     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6288     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6289     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6290 elif enabled tms470; then
6291     add_cflags -pds=824 -pds=837
6292     disable inline_asm
6293 elif enabled pathscale; then
6294     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6295 elif enabled_any msvc icl; then
6296     enabled x86_32 && disable aligned_stack
6297     enabled_all x86_32 debug && add_cflags -Oy-
6298     enabled debug && add_ldflags -debug
6299     enable pragma_deprecated
6300     if enabled icl; then
6301         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6302         # (correctly) on icl 13.x.
6303         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6304             add_cflags -Qansi-alias
6305         # Some inline asm is not compilable in debug
6306         if enabled debug; then
6307             disable ebp_available
6308             disable ebx_available
6309         fi
6310     fi
6311     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6312     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6313     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6314     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6315     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6316     # MSVC 2013 and newer can handle it fine.
6317     # If this declspec fails, force including stdlib.h before the restrict redefinition
6318     # happens in config.h.
6319     if [ $_restrict != restrict ]; then
6320         check_cc <<EOF || add_cflags -FIstdlib.h
6321 __declspec($_restrict) void* foo(int);
6322 EOF
6323     fi
6324     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6325     # Issue has been fixed in MSVC v19.00.24218.
6326     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6327         check_cflags -d2SSAOptimizer-
6328     # enable utf-8 source processing on VS2015 U2 and newer
6329     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6330         add_cflags -utf-8
6331 fi
6332
6333 for pfx in "" host_; do
6334     varname=${pfx%_}cc_type
6335     eval "type=\$$varname"
6336     if [ $type = "msvc" ]; then
6337         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6338 static inline int foo(int a) { return a; }
6339 EOF
6340     fi
6341 done
6342
6343 case $as_type in
6344     clang)
6345         add_asflags -Qunused-arguments
6346     ;;
6347 esac
6348
6349 case $ld_type in
6350     clang)
6351         check_ldflags -Qunused-arguments
6352     ;;
6353 esac
6354
6355 case $target_os in
6356     osf1)
6357         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6358     ;;
6359 esac
6360
6361 enable frame_thread_encoder
6362
6363 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6364
6365 check_deps $CONFIG_LIST       \
6366            $CONFIG_EXTRA      \
6367            $HAVE_LIST         \
6368            $ALL_COMPONENTS    \
6369
6370 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"
6371
6372
6373 if test $target_os = "haiku"; then
6374     disable memalign
6375     disable posix_memalign
6376 fi
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 atempo_filter       && prepend avfilter_deps "avcodec"
6443 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6444 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6445 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6446 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6447 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6448 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6449 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6450 enabled pan_filter          && prepend avfilter_deps "swresample"
6451 enabled pp_filter           && prepend avfilter_deps "postproc"
6452 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6453 enabled resample_filter && prepend avfilter_deps "avresample"
6454 enabled sab_filter          && prepend avfilter_deps "swscale"
6455 enabled scale_filter    && prepend avfilter_deps "swscale"
6456 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6457 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6458 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6459 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6460 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6461 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6462 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6463 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6464 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6465
6466 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6467
6468 enabled opus_decoder    && prepend avcodec_deps "swresample"
6469
6470 expand_deps(){
6471     lib_deps=${1}_deps
6472     eval "deps=\$$lib_deps"
6473     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6474     unique $lib_deps
6475 }
6476
6477 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6478 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6479
6480 map 'expand_deps $v' $LIBRARY_LIST
6481
6482 license="LGPL version 2.1 or later"
6483 if enabled nonfree; then
6484     license="nonfree and unredistributable"
6485 elif enabled gplv3; then
6486     license="GPL version 3 or later"
6487 elif enabled lgplv3; then
6488     license="LGPL version 3 or later"
6489 elif enabled gpl; then
6490     license="GPL version 2 or later"
6491 fi
6492
6493 if test "$quiet" != "yes"; then
6494
6495 echo "install prefix            $prefix"
6496 echo "source path               $source_path"
6497 echo "C compiler                $cc"
6498 echo "C library                 $libc_type"
6499 if test "$host_cc" != "$cc"; then
6500     echo "host C compiler           $host_cc"
6501     echo "host C library            $host_libc_type"
6502 fi
6503 echo "ARCH                      $arch ($cpu)"
6504 if test "$build_suffix" != ""; then
6505     echo "build suffix              $build_suffix"
6506 fi
6507 if test "$progs_suffix" != ""; then
6508     echo "progs suffix              $progs_suffix"
6509 fi
6510 if test "$extra_version" != ""; then
6511     echo "version string suffix     $extra_version"
6512 fi
6513 echo "big-endian                ${bigendian-no}"
6514 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6515 if enabled x86; then
6516     echo "${yasmexe}                      ${yasm-no}"
6517     echo "MMX enabled               ${mmx-no}"
6518     echo "MMXEXT enabled            ${mmxext-no}"
6519     echo "3DNow! enabled            ${amd3dnow-no}"
6520     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6521     echo "SSE enabled               ${sse-no}"
6522     echo "SSSE3 enabled             ${ssse3-no}"
6523     echo "AESNI enabled             ${aesni-no}"
6524     echo "AVX enabled               ${avx-no}"
6525     echo "XOP enabled               ${xop-no}"
6526     echo "FMA3 enabled              ${fma3-no}"
6527     echo "FMA4 enabled              ${fma4-no}"
6528     echo "i686 features enabled     ${i686-no}"
6529     echo "CMOV is fast              ${fast_cmov-no}"
6530     echo "EBX available             ${ebx_available-no}"
6531     echo "EBP available             ${ebp_available-no}"
6532 fi
6533 if enabled aarch64; then
6534     echo "NEON enabled              ${neon-no}"
6535     echo "VFP enabled               ${vfp-no}"
6536 fi
6537 if enabled arm; then
6538     echo "ARMv5TE enabled           ${armv5te-no}"
6539     echo "ARMv6 enabled             ${armv6-no}"
6540     echo "ARMv6T2 enabled           ${armv6t2-no}"
6541     echo "VFP enabled               ${vfp-no}"
6542     echo "NEON enabled              ${neon-no}"
6543     echo "THUMB enabled             ${thumb-no}"
6544 fi
6545 if enabled mips; then
6546     echo "MIPS FPU enabled          ${mipsfpu-no}"
6547     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6548     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6549     echo "MIPS MSA enabled          ${msa-no}"
6550     echo "LOONGSON MMI enabled      ${mmi-no}"
6551 fi
6552 if enabled ppc; then
6553     echo "AltiVec enabled           ${altivec-no}"
6554     echo "VSX enabled               ${vsx-no}"
6555     echo "POWER8 enabled            ${power8-no}"
6556     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6557     echo "dcbzl available           ${dcbzl-no}"
6558 fi
6559 echo "debug symbols             ${debug-no}"
6560 echo "strip symbols             ${stripping-no}"
6561 echo "optimize for size         ${small-no}"
6562 echo "optimizations             ${optimizations-no}"
6563 echo "static                    ${static-no}"
6564 echo "shared                    ${shared-no}"
6565 echo "postprocessing support    ${postproc-no}"
6566 echo "network support           ${network-no}"
6567 echo "threading support         ${thread_type-no}"
6568 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6569 echo "texi2html enabled         ${texi2html-no}"
6570 echo "perl enabled              ${perl-no}"
6571 echo "pod2man enabled           ${pod2man-no}"
6572 echo "makeinfo enabled          ${makeinfo-no}"
6573 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6574 test -n "$random_seed" &&
6575     echo "random seed               ${random_seed}"
6576 echo
6577
6578 echo "External libraries:"
6579 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6580 echo
6581
6582 echo "External libraries providing hardware acceleration:"
6583 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6584 echo
6585
6586 echo "Libraries:"
6587 print_enabled '' $LIBRARY_LIST | print_in_columns
6588 echo
6589
6590 echo "Programs:"
6591 print_enabled '' $PROGRAM_LIST | print_in_columns
6592 echo
6593
6594 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6595     echo "Enabled ${type}s:"
6596     eval list=\$$(toupper $type)_LIST
6597     print_enabled '_*' $list | print_in_columns
6598     echo
6599 done
6600
6601 echo "License: $license"
6602
6603 echo "Creating configuration files ..."
6604
6605 fi # test "$quiet" != "yes"
6606
6607 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6608
6609 enabled stripping || strip="echo skipping strip"
6610
6611 config_files="$TMPH config.mak doc/config.texi"
6612
6613 cat > config.mak <<EOF
6614 # Automatically generated by configure - do not modify!
6615 ifndef FFMPEG_CONFIG_MAK
6616 FFMPEG_CONFIG_MAK=1
6617 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6618 prefix=$prefix
6619 LIBDIR=\$(DESTDIR)$libdir
6620 SHLIBDIR=\$(DESTDIR)$shlibdir
6621 INCDIR=\$(DESTDIR)$incdir
6622 BINDIR=\$(DESTDIR)$bindir
6623 DATADIR=\$(DESTDIR)$datadir
6624 DOCDIR=\$(DESTDIR)$docdir
6625 MANDIR=\$(DESTDIR)$mandir
6626 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6627 INSTALL_NAME_DIR=$install_name_dir
6628 SRC_PATH=$source_path
6629 SRC_LINK=$source_link
6630 ifndef MAIN_MAKEFILE
6631 SRC_PATH:=\$(SRC_PATH:.%=..%)
6632 endif
6633 CC_IDENT=$cc_ident
6634 ARCH=$arch
6635 INTRINSICS=$intrinsics
6636 CC=$cc
6637 CXX=$cxx
6638 AS=$as
6639 OBJCC=$objcc
6640 LD=$ld
6641 DEPCC=$dep_cc
6642 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6643 DEPAS=$as
6644 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6645 YASM=$yasmexe
6646 DEPYASM=$yasmexe
6647 AR=$ar
6648 ARFLAGS=$arflags
6649 AR_O=$ar_o
6650 RANLIB=$ranlib
6651 STRIP=$strip
6652 CP=cp -p
6653 LN_S=$ln_s
6654 CPPFLAGS=$CPPFLAGS
6655 CFLAGS=$CFLAGS
6656 CXXFLAGS=$CXXFLAGS
6657 OBJCFLAGS=$OBJCFLAGS
6658 ASFLAGS=$ASFLAGS
6659 AS_C=$AS_C
6660 AS_O=$AS_O
6661 OBJCC_C=$OBJCC_C
6662 OBJCC_E=$OBJCC_E
6663 OBJCC_O=$OBJCC_O
6664 CC_C=$CC_C
6665 CC_E=$CC_E
6666 CC_O=$CC_O
6667 CXX_C=$CXX_C
6668 CXX_O=$CXX_O
6669 LD_O=$LD_O
6670 LD_LIB=$LD_LIB
6671 LD_PATH=$LD_PATH
6672 DLLTOOL=$dlltool
6673 WINDRES=$windres
6674 DEPWINDRES=$dep_cc
6675 DOXYGEN=$doxygen
6676 LDFLAGS=$LDFLAGS
6677 LDEXEFLAGS=$LDEXEFLAGS
6678 LDLIBFLAGS=$LDLIBFLAGS
6679 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6680 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6681 YASMFLAGS=$YASMFLAGS
6682 BUILDSUF=$build_suffix
6683 PROGSSUF=$progs_suffix
6684 FULLNAME=$FULLNAME
6685 LIBPREF=$LIBPREF
6686 LIBSUF=$LIBSUF
6687 LIBNAME=$LIBNAME
6688 SLIBPREF=$SLIBPREF
6689 SLIBSUF=$SLIBSUF
6690 EXESUF=$EXESUF
6691 EXTRA_VERSION=$extra_version
6692 CCDEP=$CCDEP
6693 CXXDEP=$CXXDEP
6694 CCDEP_FLAGS=$CCDEP_FLAGS
6695 ASDEP=$ASDEP
6696 ASDEP_FLAGS=$ASDEP_FLAGS
6697 CC_DEPFLAGS=$CC_DEPFLAGS
6698 AS_DEPFLAGS=$AS_DEPFLAGS
6699 HOSTCC=$host_cc
6700 HOSTLD=$host_ld
6701 HOSTCFLAGS=$host_cflags
6702 HOSTCPPFLAGS=$host_cppflags
6703 HOSTEXESUF=$HOSTEXESUF
6704 HOSTLDFLAGS=$host_ldflags
6705 HOSTEXTRALIBS=$host_extralibs
6706 DEPHOSTCC=$host_cc
6707 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6708 HOSTCCDEP=$HOSTCCDEP
6709 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6710 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6711 HOSTCC_C=$HOSTCC_C
6712 HOSTCC_O=$HOSTCC_O
6713 HOSTLD_O=$HOSTLD_O
6714 TARGET_EXEC=$target_exec $target_exec_args
6715 TARGET_PATH=$target_path
6716 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6717 CFLAGS-ffplay=${sdl2_cflags}
6718 CFLAGS_HEADERS=$CFLAGS_HEADERS
6719 ZLIB=$($ldflags_filter -lz)
6720 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6721 EXTRALIBS=$extralibs
6722 COMPAT_OBJS=$compat_objs
6723 INSTALL=$install
6724 LIBTARGET=${LIBTARGET}
6725 SLIBNAME=${SLIBNAME}
6726 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6727 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6728 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6729 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6730 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6731 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6732 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6733 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6734 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6735 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6736 NOREDZONE_FLAGS=$noredzone_flags
6737 EOF
6738
6739 get_version(){
6740     lcname=lib${1}
6741     name=$(toupper $lcname)
6742     file=$source_path/$lcname/version.h
6743     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6744     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6745     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6746     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6747     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6748     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6749 }
6750
6751 map 'get_version $v' $LIBRARY_LIST
6752
6753 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6754
6755 print_program_extralibs(){
6756     eval "program_extralibs=\$${1}_extralibs"
6757     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> config.mak
6758 }
6759
6760 map 'print_program_extralibs $v' $PROGRAM_LIST
6761
6762 cat > $TMPH <<EOF
6763 /* Automatically generated by configure - do not modify! */
6764 #ifndef FFMPEG_CONFIG_H
6765 #define FFMPEG_CONFIG_H
6766 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6767 #define FFMPEG_LICENSE "$(c_escape $license)"
6768 #define CONFIG_THIS_YEAR 2017
6769 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6770 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6771 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6772 #define av_restrict $_restrict
6773 #define EXTERN_PREFIX "${extern_prefix}"
6774 #define EXTERN_ASM ${extern_prefix}
6775 #define BUILDSUF "$build_suffix"
6776 #define SLIBSUF "$SLIBSUF"
6777 #define HAVE_MMX2 HAVE_MMXEXT
6778 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6779 EOF
6780
6781 test -n "$assert_level" &&
6782     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6783
6784 test -n "$malloc_prefix" &&
6785     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6786
6787 if enabled yasm; then
6788     append config_files $TMPASM
6789     printf '' >$TMPASM
6790 fi
6791
6792 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6793
6794
6795 mkdir -p doc
6796 mkdir -p tests
6797 mkdir -p tests/api
6798 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6799
6800 print_config ARCH_   "$config_files" $ARCH_LIST
6801 print_config HAVE_   "$config_files" $HAVE_LIST
6802 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6803                                      $CONFIG_EXTRA      \
6804                                      $ALL_COMPONENTS    \
6805
6806 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6807 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6808
6809 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6810 cp_if_changed $TMPH config.h
6811 touch .config
6812
6813 enabled yasm && cp_if_changed $TMPASM config.asm
6814
6815 cat > $TMPH <<EOF
6816 /* Generated by ffconf */
6817 #ifndef AVUTIL_AVCONFIG_H
6818 #define AVUTIL_AVCONFIG_H
6819 EOF
6820
6821 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6822
6823 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6824
6825 cp_if_changed $TMPH libavutil/avconfig.h
6826
6827 # generate the lists of enabled components
6828 print_enabled_components(){
6829     file=$1
6830     struct_name=$2
6831     name=$3
6832     shift 3
6833     echo "static const $struct_name *$name[] = {" > $TMPH
6834     for c in $*; do
6835         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6836     done
6837     echo "    NULL };" >> $TMPH
6838     cp_if_changed $TMPH $file
6839 }
6840
6841 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6842 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6843
6844 if test -n "$WARNINGS"; then
6845     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6846     enabled fatal_warnings && exit 1
6847 fi
6848
6849 # build pkg-config files
6850
6851 lib_version(){
6852     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6853 }
6854
6855 pkgconfig_generate(){
6856     name=$1
6857     shortname=${name#lib}${build_suffix}
6858     comment=$2
6859     version=$3
6860     libs=$4
6861     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6862     requires=${requires%, }
6863     enabled ${name#lib} || return 0
6864     mkdir -p $name
6865     cat <<EOF > $name/$name${build_suffix}.pc
6866 prefix=$prefix
6867 exec_prefix=\${prefix}
6868 libdir=$libdir
6869 includedir=$incdir
6870
6871 Name: $name
6872 Description: $comment
6873 Version: $version
6874 Requires: $(enabled shared || echo $requires)
6875 Requires.private: $(enabled shared && echo $requires)
6876 Conflicts:
6877 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6878 Libs.private: $(enabled shared && echo $libs)
6879 Cflags: -I\${includedir}
6880 EOF
6881
6882 mkdir -p doc/examples/pc-uninstalled
6883 includedir=${source_path}
6884 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6885     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6886 prefix=
6887 exec_prefix=
6888 libdir=\${pcfiledir}/../../../$name
6889 includedir=${includedir}
6890
6891 Name: $name
6892 Description: $comment
6893 Version: $version
6894 Requires: $requires
6895 Conflicts:
6896 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6897 Cflags: -I\${includedir}
6898 EOF
6899 }
6900
6901 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6902 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6903 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6904 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6905 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6906 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6907 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6908 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6909 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"