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_cxxflags(){
 832     append CXXFLAGS $($cflags_filter "$@")
 833 }
 834
 835 add_asflags(){
 836     append ASFLAGS $($asflags_filter "$@")
 837 }
 838
 839 add_objcflags(){
 840     append OBJCFLAGS $($objcflags_filter "$@")
 841 }
 842
 843 add_ldflags(){
 844     append LDFLAGS $($ldflags_filter "$@")
 845 }
 846
 847 add_ldexeflags(){
 848     append LDEXEFLAGS $($ldflags_filter "$@")
 849 }
 850
 851 add_ldlibflags(){
 852     append LDLIBFLAGS $($ldflags_filter "$@")
 853 }
 854
 855 add_stripflags(){
 856     append ASMSTRIPFLAGS "$@"
 857 }
 858
 859 add_extralibs(){
 860     prepend extralibs $($ldflags_filter "$@")
 861 }
 862
 863 add_host_cppflags(){
 864     append host_cppflags "$@"
 865 }
 866
 867 add_host_cflags(){
 868     append host_cflags $($host_cflags_filter "$@")
 869 }
 870
 871 add_host_ldflags(){
 872     append host_ldflags $($host_ldflags_filter "$@")
 873 }
 874
 875 add_compat(){
 876     append compat_objs $1
 877     shift
 878     map 'add_cppflags -D$v' "$@"
 879 }
 880
 881 check_cmd(){
 882     log "$@"
 883     "$@" >> $logfile 2>&1
 884 }
 885
 886 check_stat(){
 887     log check_stat "$@"
 888     stat "$1" >> $logfile 2>&1
 889 }
 890
 891 cc_o(){
 892     eval printf '%s\\n' $CC_O
 893 }
 894
 895 cc_e(){
 896     eval printf '%s\\n' $CC_E
 897 }
 898
 899 check_cc(){
 900     log check_cc "$@"
 901     cat > $TMPC
 902     log_file $TMPC
 903     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 904 }
 905
 906 check_cxx(){
 907     log check_cxx "$@"
 908     cat > $TMPCPP
 909     log_file $TMPCPP
 910     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 911 }
 912
 913 check_objcc(){
 914     log check_objcc "$@"
 915     cat > $TMPM
 916     log_file $TMPM
 917     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 918 }
 919
 920 check_cpp(){
 921     log check_cpp "$@"
 922     cat > $TMPC
 923     log_file $TMPC
 924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 925 }
 926
 927 as_o(){
 928     eval printf '%s\\n' $AS_O
 929 }
 930
 931 check_as(){
 932     log check_as "$@"
 933     cat > $TMPS
 934     log_file $TMPS
 935     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 936 }
 937
 938 check_inline_asm(){
 939     log check_inline_asm "$@"
 940     name="$1"
 941     code="$2"
 942     shift 2
 943     disable $name
 944     check_cc "$@" <<EOF && enable $name
 945 void foo(void){ __asm__ volatile($code); }
 946 EOF
 947 }
 948
 949 check_inline_asm_flags(){
 950     log check_inline_asm_flags "$@"
 951     name="$1"
 952     code="$2"
 953     flags=''
 954     shift 2
 955     while [ "$1" != "" ]; do
 956       append flags $1
 957       shift
 958     done;
 959     disable $name
 960     cat > $TMPC <<EOF
 961 void foo(void){ __asm__ volatile($code); }
 962 EOF
 963     log_file $TMPC
 964     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 965     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 966 }
 967
 968 check_insn(){
 969     log check_insn "$@"
 970     check_inline_asm ${1}_inline "\"$2\""
 971     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 972 }
 973
 974 check_yasm(){
 975     log check_yasm "$@"
 976     echo "$1" > $TMPS
 977     log_file $TMPS
 978     shift 1
 979     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 980 }
 981
 982 ld_o(){
 983     eval printf '%s\\n' $LD_O
 984 }
 985
 986 check_ld(){
 987     log check_ld "$@"
 988     type=$1
 989     shift 1
 990     flags=$(filter_out '-l*|*.so' $@)
 991     libs=$(filter '-l*|*.so' $@)
 992     check_$type $($cflags_filter $flags) || return
 993     flags=$($ldflags_filter $flags)
 994     libs=$($ldflags_filter $libs)
 995     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 996 }
 997
 998 print_include(){
 999     hdr=$1
1000     test "${hdr%.h}" = "${hdr}" &&
1001         echo "#include $hdr"    ||
1002         echo "#include <$hdr>"
1003 }
1004
1005 check_code(){
1006     log check_code "$@"
1007     check=$1
1008     headers=$2
1009     code=$3
1010     shift 3
1011     {
1012         for hdr in $headers; do
1013             print_include $hdr
1014         done
1015         echo "int main(void) { $code; return 0; }"
1016     } | check_$check "$@"
1017 }
1018
1019 check_cppflags(){
1020     log check_cppflags "$@"
1021     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1022 int x;
1023 EOF
1024 }
1025
1026 test_cflags(){
1027     log test_cflags "$@"
1028     set -- $($cflags_filter "$@")
1029     check_cc "$@" <<EOF
1030 int x;
1031 EOF
1032 }
1033
1034 check_cflags(){
1035     log check_cflags "$@"
1036     test_cflags "$@" && add_cflags "$@"
1037 }
1038
1039 check_cxxflags(){
1040     log check_cxxflags "$@"
1041     set -- $($cflags_filter "$@")
1042     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1043 int x;
1044 EOF
1045 }
1046
1047 test_objcflags(){
1048     log test_objcflags "$@"
1049     set -- $($objcflags_filter "$@")
1050     check_objcc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_objcflags(){
1056     log check_objcflags "$@"
1057     test_objcflags "$@" && add_objcflags "$@"
1058 }
1059
1060 test_ldflags(){
1061     log test_ldflags "$@"
1062     check_ld "cc" "$@" <<EOF
1063 int main(void){ return 0; }
1064 EOF
1065 }
1066
1067 check_ldflags(){
1068     log check_ldflags "$@"
1069     test_ldflags "$@" && add_ldflags "$@"
1070 }
1071
1072 test_stripflags(){
1073     log test_stripflags "$@"
1074     # call check_cc to get a fresh TMPO
1075     check_cc <<EOF
1076 int main(void) { return 0; }
1077 EOF
1078     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1079 }
1080
1081 check_stripflags(){
1082     log check_stripflags "$@"
1083     test_stripflags "$@" && add_stripflags "$@"
1084 }
1085
1086 check_header(){
1087     log check_header "$@"
1088     header=$1
1089     shift
1090     disable_safe $header
1091     check_cpp "$@" <<EOF && enable_safe $header
1092 #include <$header>
1093 int x;
1094 EOF
1095 }
1096
1097 check_header_objcc(){
1098     log check_header_objcc "$@"
1099     rm -f -- "$TMPO"
1100     header=$1
1101     shift
1102     disable_safe $header
1103     {
1104        echo "#include <$header>"
1105        echo "int main(void) { return 0; }"
1106     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1107 }
1108
1109 check_func(){
1110     log check_func "$@"
1111     func=$1
1112     shift
1113     disable $func
1114     check_ld "cc" "$@" <<EOF && enable $func
1115 extern int $func();
1116 int main(void){ $func(); }
1117 EOF
1118 }
1119
1120 check_complexfunc(){
1121     log check_complexfunc "$@"
1122     func=$1
1123     narg=$2
1124     shift 2
1125     test $narg = 2 && args="f, g" || args="f * I"
1126     disable $func
1127     check_ld "cc" "$@" <<EOF && enable $func
1128 #include <complex.h>
1129 #include <math.h>
1130 float foo(complex float f, complex float g) { return $func($args); }
1131 int main(void){ return (int) foo; }
1132 EOF
1133 }
1134
1135 check_mathfunc(){
1136     log check_mathfunc "$@"
1137     func=$1
1138     narg=$2
1139     shift 2
1140     test $narg = 2 && args="f, g" || args="f"
1141     disable $func
1142     check_ld "cc" "$@" <<EOF && enable $func
1143 #include <math.h>
1144 float foo(float f, float g) { return $func($args); }
1145 int main(void){ return (int) foo; }
1146 EOF
1147 }
1148
1149 check_func_headers(){
1150     log check_func_headers "$@"
1151     headers=$1
1152     funcs=$2
1153     shift 2
1154     {
1155         for hdr in $headers; do
1156             print_include $hdr
1157         done
1158         echo "#include <stdint.h>"
1159         for func in $funcs; do
1160             echo "long check_$func(void) { return (long) $func; }"
1161         done
1162         echo "int main(void) { int ret = 0;"
1163         # LTO could optimize out the test functions without this
1164         for func in $funcs; do
1165             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1166         done
1167         echo "return ret; }"
1168     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1169 }
1170
1171 check_class_headers_cpp(){
1172     log check_class_headers_cpp "$@"
1173     headers=$1
1174     classes=$2
1175     shift 2
1176     {
1177         for hdr in $headers; do
1178             echo "#include <$hdr>"
1179         done
1180         echo "int main(void) { "
1181         i=1
1182         for class in $classes; do
1183             echo "$class obj$i;"
1184             i=$(expr $i + 1)
1185         done
1186         echo "return 0; }"
1187     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1188 }
1189
1190 check_cpp_condition(){
1191     log check_cpp_condition "$@"
1192     header=$1
1193     condition=$2
1194     shift 2
1195     check_cpp "$@" <<EOF
1196 #include <$header>
1197 #if !($condition)
1198 #error "unsatisfied condition: $condition"
1199 #endif
1200 EOF
1201 }
1202
1203 test_cflags_cc(){
1204     log test_cflags_cc "$@"
1205     flags=$1
1206     header=$2
1207     condition=$3
1208     shift 3
1209     set -- $($cflags_filter "$flags")
1210     check_cc "$@" <<EOF
1211 #include <$header>
1212 #if !($condition)
1213 #error "unsatisfied condition: $condition"
1214 #endif
1215 EOF
1216 }
1217
1218 check_lib(){
1219     log check_lib "$@"
1220     headers="$1"
1221     funcs="$2"
1222     shift 2
1223     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1224 }
1225
1226 check_lib_cpp(){
1227     log check_lib_cpp "$@"
1228     headers="$1"
1229     classes="$2"
1230     shift 2
1231     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1232 }
1233
1234 check_pkg_config(){
1235     log check_pkg_config "$@"
1236     pkg_version="$1"
1237     pkg="${1%% *}"
1238     headers="$2"
1239     funcs="$3"
1240     shift 3
1241     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1242     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1243     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1244     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1245         set_safe "${pkg}_cflags" $pkg_cflags   &&
1246         set_safe "${pkg}_libs"   $pkg_libs
1247 }
1248
1249 check_exec(){
1250     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1251 }
1252
1253 check_exec_crash(){
1254     log check_exec_crash "$@"
1255     code=$(cat)
1256
1257     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1258     # are safe but may not be available everywhere.  Thus we use
1259     # raise(SIGTERM) instead.  The check is run in a subshell so we
1260     # can redirect the "Terminated" message from the shell.  SIGBUS
1261     # is not defined by standard C so it is used conditionally.
1262
1263     (check_exec "$@") >> $logfile 2>&1 <<EOF
1264 #include <signal.h>
1265 static void sighandler(int sig){
1266     raise(SIGTERM);
1267 }
1268 int foo(void){
1269     $code
1270 }
1271 int (*func_ptr)(void) = foo;
1272 int main(void){
1273     signal(SIGILL, sighandler);
1274     signal(SIGFPE, sighandler);
1275     signal(SIGSEGV, sighandler);
1276 #ifdef SIGBUS
1277     signal(SIGBUS, sighandler);
1278 #endif
1279     return func_ptr();
1280 }
1281 EOF
1282 }
1283
1284 check_type(){
1285     log check_type "$@"
1286     headers=$1
1287     type=$2
1288     shift 2
1289     disable_safe "$type"
1290     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1291 }
1292
1293 check_struct(){
1294     log check_struct "$@"
1295     headers=$1
1296     struct=$2
1297     member=$3
1298     shift 3
1299     disable_safe "${struct}_${member}"
1300     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1301         enable_safe "${struct}_${member}"
1302 }
1303
1304 check_builtin(){
1305     log check_builtin "$@"
1306     name=$1
1307     headers=$2
1308     builtin=$3
1309     shift 3
1310     disable "$name"
1311     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1312 }
1313
1314 check_compile_assert(){
1315     log check_compile_assert "$@"
1316     name=$1
1317     headers=$2
1318     condition=$3
1319     shift 3
1320     disable "$name"
1321     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1322 }
1323
1324 require(){
1325     log require "$@"
1326     name_version="$1"
1327     headers="$2"
1328     func="$3"
1329     shift 3
1330     check_lib "$headers" $func "$@" || die "ERROR: $name_version not found"
1331 }
1332
1333 require_cpp(){
1334     name="$1"
1335     headers="$2"
1336     classes="$3"
1337     shift 3
1338     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1339 }
1340
1341 use_pkg_config(){
1342     log use_pkg_config "$@"
1343     pkg="$1"
1344     check_pkg_config "$@" || return 1
1345     add_cflags    $(get_safe "${pkg}_cflags")
1346     add_extralibs $(get_safe "${pkg}_libs")
1347 }
1348
1349 require_pkg_config(){
1350     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1351 }
1352
1353 require_libfreetype(){
1354     log require_libfreetype "$@"
1355     pkg="freetype2"
1356     check_cmd $pkg_config --exists --print-errors $pkg \
1357       || die "ERROR: $pkg not found"
1358     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1359     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1360     {
1361         echo "#include <ft2build.h>"
1362         echo "#include FT_FREETYPE_H"
1363         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1364         echo "int main(void) { return 0; }"
1365     } | check_ld "cc" $pkg_cflags $pkg_libs \
1366       && set_safe "${pkg}_cflags" $pkg_cflags \
1367       && set_safe "${pkg}_libs"   $pkg_libs \
1368       || die "ERROR: $pkg not found"
1369     add_cflags    $(get_safe "${pkg}_cflags")
1370     add_extralibs $(get_safe "${pkg}_libs")
1371 }
1372
1373 hostcc_e(){
1374     eval printf '%s\\n' $HOSTCC_E
1375 }
1376
1377 hostcc_o(){
1378     eval printf '%s\\n' $HOSTCC_O
1379 }
1380
1381 check_host_cc(){
1382     log check_host_cc "$@"
1383     cat > $TMPC
1384     log_file $TMPC
1385     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1386 }
1387
1388 check_host_cpp(){
1389     log check_host_cpp "$@"
1390     cat > $TMPC
1391     log_file $TMPC
1392     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1393 }
1394
1395 check_host_cppflags(){
1396     log check_host_cppflags "$@"
1397     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1398 int x;
1399 EOF
1400 }
1401
1402 check_host_cflags(){
1403     log check_host_cflags "$@"
1404     set -- $($host_cflags_filter "$@")
1405     check_host_cc "$@" <<EOF && append host_cflags "$@"
1406 int x;
1407 EOF
1408 }
1409
1410 check_host_cpp_condition(){
1411     log check_host_cpp_condition "$@"
1412     header=$1
1413     condition=$2
1414     shift 2
1415     check_host_cpp "$@" <<EOF
1416 #include <$header>
1417 #if !($condition)
1418 #error "unsatisfied condition: $condition"
1419 #endif
1420 EOF
1421 }
1422
1423 cp_if_changed(){
1424     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1425     mkdir -p "$(dirname $2)"
1426     cp -f "$1" "$2"
1427 }
1428
1429 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1430 # system-dependent things.
1431
1432 AVCODEC_COMPONENTS="
1433     bsfs
1434     decoders
1435     encoders
1436     hwaccels
1437     parsers
1438 "
1439
1440 AVDEVICE_COMPONENTS="
1441     indevs
1442     outdevs
1443 "
1444 AVFILTER_COMPONENTS="
1445     filters
1446 "
1447 AVFORMAT_COMPONENTS="
1448     demuxers
1449     muxers
1450     protocols
1451 "
1452
1453 AVRESAMPLE_COMPONENTS=""
1454 AVUTIL_COMPONENTS=""
1455
1456 COMPONENT_LIST="
1457     $AVCODEC_COMPONENTS
1458     $AVDEVICE_COMPONENTS
1459     $AVFILTER_COMPONENTS
1460     $AVFORMAT_COMPONENTS
1461     $AVRESAMPLE_COMPONENTS
1462     $AVUTIL_COMPONENTS
1463 "
1464
1465 EXAMPLE_LIST="
1466     avio_dir_cmd_example
1467     avio_reading_example
1468     decode_audio_example
1469     decode_video_example
1470     demuxing_decoding_example
1471     encode_audio_example
1472     encode_video_example
1473     extract_mvs_example
1474     filter_audio_example
1475     filtering_audio_example
1476     filtering_video_example
1477     http_multiclient_example
1478     metadata_example
1479     muxing_example
1480     qsvdec_example
1481     remuxing_example
1482     resampling_audio_example
1483     scaling_video_example
1484     transcode_aac_example
1485     transcoding_example
1486 "
1487 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1488     bzlib
1489     iconv
1490     libxcb
1491     libxcb_shm
1492     libxcb_shape
1493     libxcb_xfixes
1494     lzma
1495     schannel
1496     sdl
1497     sdl2
1498     securetransport
1499     xlib
1500     zlib
1501 "
1502
1503 EXTERNAL_LIBRARY_GPL_LIST="
1504     avisynth
1505     frei0r
1506     libcdio
1507     librubberband
1508     libvidstab
1509     libx264
1510     libx265
1511     libxavs
1512     libxvid
1513 "
1514
1515 EXTERNAL_LIBRARY_NONFREE_LIST="
1516     libfdk_aac
1517     openssl
1518 "
1519
1520 EXTERNAL_LIBRARY_VERSION3_LIST="
1521     gmp
1522     libopencore_amrnb
1523     libopencore_amrwb
1524     libvo_amrwbenc
1525 "
1526
1527 EXTERNAL_LIBRARY_GPLV3_LIST="
1528     libsmbclient
1529 "
1530
1531 EXTERNAL_LIBRARY_LIST="
1532     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1533     $EXTERNAL_LIBRARY_GPL_LIST
1534     $EXTERNAL_LIBRARY_NONFREE_LIST
1535     $EXTERNAL_LIBRARY_VERSION3_LIST
1536     $EXTERNAL_LIBRARY_GPLV3_LIST
1537     chromaprint
1538     crystalhd
1539     decklink
1540     gcrypt
1541     gnutls
1542     jni
1543     ladspa
1544     libass
1545     libbluray
1546     libbs2b
1547     libcaca
1548     libcelt
1549     libdc1394
1550     libflite
1551     libfontconfig
1552     libfreetype
1553     libfribidi
1554     libgme
1555     libgsm
1556     libiec61883
1557     libilbc
1558     libkvazaar
1559     libmodplug
1560     libmp3lame
1561     libnut
1562     libopencv
1563     libopenh264
1564     libopenjpeg
1565     libopenmpt
1566     libopus
1567     libpulse
1568     librtmp
1569     libschroedinger
1570     libshine
1571     libsmbclient
1572     libsnappy
1573     libsoxr
1574     libspeex
1575     libssh
1576     libtesseract
1577     libtheora
1578     libtwolame
1579     libv4l2
1580     libvorbis
1581     libvpx
1582     libwavpack
1583     libwebp
1584     libzimg
1585     libzmq
1586     libzvbi
1587     mediacodec
1588     netcdf
1589     openal
1590     opencl
1591     opengl
1592     videotoolbox
1593 "
1594 HWACCEL_AUTODETECT_LIBRARY_LIST="
1595     audiotoolbox
1596     cuda
1597     cuvid
1598     d3d11va
1599     dxva2
1600     nvenc
1601     vaapi
1602     vda
1603     vdpau
1604     videotoolbox_hwaccel
1605     xvmc
1606 "
1607
1608 HWACCEL_LIBRARY_NONFREE_LIST="
1609     libnpp
1610 "
1611
1612 HWACCEL_LIBRARY_LIST="
1613     $HWACCEL_AUTODETECT_LIBRARY_LIST
1614     $HWACCEL_LIBRARY_NONFREE_LIST
1615     libmfx
1616     mmal
1617     omx
1618 "
1619
1620 DOCUMENT_LIST="
1621     doc
1622     htmlpages
1623     manpages
1624     podpages
1625     txtpages
1626 "
1627
1628 FEATURE_LIST="
1629     ftrapv
1630     gray
1631     hardcoded_tables
1632     omx_rpi
1633     runtime_cpudetect
1634     safe_bitstream_reader
1635     shared
1636     small
1637     static
1638     swscale_alpha
1639 "
1640
1641 LIBRARY_LIST="
1642     avcodec
1643     avdevice
1644     avfilter
1645     avformat
1646     avresample
1647     avutil
1648     postproc
1649     swresample
1650     swscale
1651 "
1652
1653 LICENSE_LIST="
1654     gpl
1655     nonfree
1656     version3
1657 "
1658
1659 PROGRAM_LIST="
1660     ffplay
1661     ffprobe
1662     ffserver
1663     ffmpeg
1664 "
1665
1666 SUBSYSTEM_LIST="
1667     dct
1668     dwt
1669     error_resilience
1670     faan
1671     fast_unaligned
1672     fft
1673     lsp
1674     lzo
1675     mdct
1676     pixelutils
1677     network
1678     rdft
1679 "
1680
1681 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1682 CONFIG_LIST="
1683     $DOCUMENT_LIST
1684     $EXAMPLE_LIST
1685     $EXTERNAL_LIBRARY_LIST
1686     $HWACCEL_LIBRARY_LIST
1687     $FEATURE_LIST
1688     $LICENSE_LIST
1689     $LIBRARY_LIST
1690     $PROGRAM_LIST
1691     $SUBSYSTEM_LIST
1692     fontconfig
1693     memory_poisoning
1694     neon_clobber_test
1695     pic
1696     raise_major
1697     thumb
1698     valgrind_backtrace
1699     xmm_clobber_test
1700     $COMPONENT_LIST
1701 "
1702
1703 THREADS_LIST="
1704     pthreads
1705     os2threads
1706     w32threads
1707 "
1708
1709 ATOMICS_LIST="
1710     atomics_gcc
1711     atomics_suncc
1712     atomics_win32
1713 "
1714
1715 AUTODETECT_LIBS="
1716     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1717     $HWACCEL_AUTODETECT_LIBRARY_LIST
1718     $THREADS_LIST
1719 "
1720
1721 ARCH_LIST="
1722     aarch64
1723     alpha
1724     arm
1725     avr32
1726     avr32_ap
1727     avr32_uc
1728     bfin
1729     ia64
1730     m68k
1731     mips
1732     mips64
1733     parisc
1734     ppc
1735     ppc64
1736     s390
1737     sh4
1738     sparc
1739     sparc64
1740     tilegx
1741     tilepro
1742     tomi
1743     x86
1744     x86_32
1745     x86_64
1746 "
1747
1748 ARCH_EXT_LIST_ARM="
1749     armv5te
1750     armv6
1751     armv6t2
1752     armv8
1753     neon
1754     vfp
1755     vfpv3
1756     setend
1757 "
1758
1759 ARCH_EXT_LIST_MIPS="
1760     mipsfpu
1761     mips32r2
1762     mips32r5
1763     mips64r2
1764     mips32r6
1765     mips64r6
1766     mipsdsp
1767     mipsdspr2
1768     msa
1769 "
1770
1771 ARCH_EXT_LIST_LOONGSON="
1772     loongson2
1773     loongson3
1774     mmi
1775 "
1776
1777 ARCH_EXT_LIST_X86_SIMD="
1778     aesni
1779     amd3dnow
1780     amd3dnowext
1781     avx
1782     avx2
1783     fma3
1784     fma4
1785     mmx
1786     mmxext
1787     sse
1788     sse2
1789     sse3
1790     sse4
1791     sse42
1792     ssse3
1793     xop
1794 "
1795
1796 ARCH_EXT_LIST_PPC="
1797     altivec
1798     dcbzl
1799     ldbrx
1800     power8
1801     ppc4xx
1802     vsx
1803 "
1804
1805 ARCH_EXT_LIST_X86="
1806     $ARCH_EXT_LIST_X86_SIMD
1807     cpunop
1808     i686
1809 "
1810
1811 ARCH_EXT_LIST="
1812     $ARCH_EXT_LIST_ARM
1813     $ARCH_EXT_LIST_PPC
1814     $ARCH_EXT_LIST_X86
1815     $ARCH_EXT_LIST_MIPS
1816     $ARCH_EXT_LIST_LOONGSON
1817 "
1818
1819 ARCH_FEATURES="
1820     aligned_stack
1821     fast_64bit
1822     fast_clz
1823     fast_cmov
1824     local_aligned_8
1825     local_aligned_16
1826     local_aligned_32
1827     simd_align_16
1828     simd_align_32
1829 "
1830
1831 BUILTIN_LIST="
1832     atomic_cas_ptr
1833     machine_rw_barrier
1834     MemoryBarrier
1835     mm_empty
1836     rdtsc
1837     sarestart
1838     sem_timedwait
1839     sync_val_compare_and_swap
1840 "
1841 HAVE_LIST_CMDLINE="
1842     inline_asm
1843     symver
1844     yasm
1845 "
1846
1847 HAVE_LIST_PUB="
1848     bigendian
1849     fast_unaligned
1850 "
1851
1852 HEADERS_LIST="
1853     alsa_asoundlib_h
1854     altivec_h
1855     arpa_inet_h
1856     asm_types_h
1857     cdio_paranoia_h
1858     cdio_paranoia_paranoia_h
1859     cuda_h
1860     dispatch_dispatch_h
1861     dev_bktr_ioctl_bt848_h
1862     dev_bktr_ioctl_meteor_h
1863     dev_ic_bt8xx_h
1864     dev_video_bktr_ioctl_bt848_h
1865     dev_video_meteor_ioctl_meteor_h
1866     direct_h
1867     dirent_h
1868     dlfcn_h
1869     d3d11_h
1870     dxva_h
1871     ES2_gl_h
1872     gsm_h
1873     io_h
1874     mach_mach_time_h
1875     machine_ioctl_bt848_h
1876     machine_ioctl_meteor_h
1877     malloc_h
1878     opencv2_core_core_c_h
1879     openjpeg_2_1_openjpeg_h
1880     openjpeg_2_0_openjpeg_h
1881     openjpeg_1_5_openjpeg_h
1882     OpenGL_gl3_h
1883     poll_h
1884     sndio_h
1885     soundcard_h
1886     stdatomic_h
1887     sys_mman_h
1888     sys_param_h
1889     sys_resource_h
1890     sys_select_h
1891     sys_soundcard_h
1892     sys_time_h
1893     sys_un_h
1894     sys_videoio_h
1895     termios_h
1896     udplite_h
1897     unistd_h
1898     valgrind_valgrind_h
1899     windows_h
1900     winsock2_h
1901 "
1902
1903 INTRINSICS_LIST="
1904     intrinsics_neon
1905 "
1906
1907 COMPLEX_FUNCS="
1908     cabs
1909     cexp
1910 "
1911
1912 MATH_FUNCS="
1913     atanf
1914     atan2f
1915     cbrt
1916     cbrtf
1917     copysign
1918     cosf
1919     erf
1920     exp2
1921     exp2f
1922     expf
1923     hypot
1924     isfinite
1925     isinf
1926     isnan
1927     ldexpf
1928     llrint
1929     llrintf
1930     log2
1931     log2f
1932     log10f
1933     lrint
1934     lrintf
1935     powf
1936     rint
1937     round
1938     roundf
1939     sinf
1940     trunc
1941     truncf
1942 "
1943
1944 SYSTEM_FUNCS="
1945     access
1946     aligned_malloc
1947     arc4random
1948     clock_gettime
1949     closesocket
1950     CommandLineToArgvW
1951     CoTaskMemFree
1952     CryptGenRandom
1953     dlopen
1954     fcntl
1955     flt_lim
1956     fork
1957     getaddrinfo
1958     gethrtime
1959     getopt
1960     GetProcessAffinityMask
1961     GetProcessMemoryInfo
1962     GetProcessTimes
1963     getrusage
1964     GetSystemTimeAsFileTime
1965     gettimeofday
1966     glob
1967     glXGetProcAddress
1968     gmtime_r
1969     inet_aton
1970     isatty
1971     jack_port_get_latency_range
1972     kbhit
1973     LoadLibrary
1974     localtime_r
1975     lstat
1976     lzo1x_999_compress
1977     mach_absolute_time
1978     MapViewOfFile
1979     memalign
1980     mkstemp
1981     mmap
1982     mprotect
1983     nanosleep
1984     PeekNamedPipe
1985     posix_memalign
1986     pthread_cancel
1987     sched_getaffinity
1988     SetConsoleTextAttribute
1989     SetConsoleCtrlHandler
1990     setmode
1991     setrlimit
1992     Sleep
1993     strerror_r
1994     sysconf
1995     sysctl
1996     usleep
1997     UTGetOSTypeFromString
1998     VirtualAlloc
1999     wglGetProcAddress
2000 "
2001
2002 TOOLCHAIN_FEATURES="
2003     as_dn_directive
2004     as_fpu_directive
2005     as_func
2006     as_object_arch
2007     asm_mod_q
2008     attribute_may_alias
2009     attribute_packed
2010     ebp_available
2011     ebx_available
2012     gnu_as
2013     gnu_windres
2014     ibm_asm
2015     inline_asm_direct_symbol_refs
2016     inline_asm_labels
2017     inline_asm_nonlocal_labels
2018     pragma_deprecated
2019     rsync_contimeout
2020     symver_asm_label
2021     symver_gnu_asm
2022     vfp_args
2023     xform_asm
2024     xmm_clobbers
2025 "
2026
2027 TYPES_LIST="
2028     CONDITION_VARIABLE_Ptr
2029     socklen_t
2030     struct_addrinfo
2031     struct_group_source_req
2032     struct_ip_mreq_source
2033     struct_ipv6_mreq
2034     struct_msghdr_msg_flags
2035     struct_pollfd
2036     struct_rusage_ru_maxrss
2037     struct_sctp_event_subscribe
2038     struct_sockaddr_in6
2039     struct_sockaddr_sa_len
2040     struct_sockaddr_storage
2041     struct_stat_st_mtim_tv_nsec
2042     struct_v4l2_frmivalenum_discrete
2043 "
2044
2045 HAVE_LIST="
2046     $ARCH_EXT_LIST
2047     $(add_suffix _external $ARCH_EXT_LIST)
2048     $(add_suffix _inline   $ARCH_EXT_LIST)
2049     $ARCH_FEATURES
2050     $ATOMICS_LIST
2051     $BUILTIN_LIST
2052     $COMPLEX_FUNCS
2053     $HAVE_LIST_CMDLINE
2054     $HAVE_LIST_PUB
2055     $HEADERS_LIST
2056     $INTRINSICS_LIST
2057     $MATH_FUNCS
2058     $SYSTEM_FUNCS
2059     $THREADS_LIST
2060     $TOOLCHAIN_FEATURES
2061     $TYPES_LIST
2062     atomics_native
2063     dos_paths
2064     dxva2_lib
2065     dxva2api_cobj
2066     libc_msvcrt
2067     makeinfo
2068     makeinfo_html
2069     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2070     perl
2071     pod2man
2072     sdl2
2073     section_data_rel_ro
2074     texi2html
2075     threads
2076     vaapi_drm
2077     vaapi_x11
2078     vdpau_x11
2079     winrt
2080 "
2081
2082 # options emitted with CONFIG_ prefix but not available on the command line
2083 CONFIG_EXTRA="
2084     aandcttables
2085     ac3dsp
2086     audio_frame_queue
2087     audiodsp
2088     blockdsp
2089     bswapdsp
2090     cabac
2091     dirac_parse
2092     dvprofile
2093     exif
2094     faandct
2095     faanidct
2096     fdctdsp
2097     flacdsp
2098     fmtconvert
2099     frame_thread_encoder
2100     g722dsp
2101     golomb
2102     gplv3
2103     h263dsp
2104     h264chroma
2105     h264dsp
2106     h264parse
2107     h264pred
2108     h264qpel
2109     hevcparse
2110     hpeldsp
2111     huffman
2112     huffyuvdsp
2113     huffyuvencdsp
2114     idctdsp
2115     iirfilter
2116     mdct15
2117     intrax8
2118     iso_media
2119     ividsp
2120     jpegtables
2121     lgplv3
2122     libx262
2123     llauddsp
2124     llviddsp
2125     llvidencdsp
2126     lpc
2127     lzf
2128     me_cmp
2129     mpeg_er
2130     mpegaudio
2131     mpegaudiodsp
2132     mpegaudioheader
2133     mpegvideo
2134     mpegvideoenc
2135     mss34dsp
2136     pixblockdsp
2137     qpeldsp
2138     qsv
2139     qsvdec
2140     qsvenc
2141     rangecoder
2142     riffdec
2143     riffenc
2144     rtpdec
2145     rtpenc_chain
2146     rv34dsp
2147     sinewin
2148     snappy
2149     srtp
2150     startcode
2151     texturedsp
2152     texturedspenc
2153     tpeldsp
2154     vaapi_encode
2155     vc1dsp
2156     videodsp
2157     vp3dsp
2158     vp56dsp
2159     vp8dsp
2160     vt_bt2020
2161     wma_freqs
2162     wmv2dsp
2163 "
2164
2165 CMDLINE_SELECT="
2166     $ARCH_EXT_LIST
2167     $CONFIG_LIST
2168     $HAVE_LIST_CMDLINE
2169     $THREADS_LIST
2170     asm
2171     cross_compile
2172     debug
2173     extra_warnings
2174     logging
2175     lto
2176     optimizations
2177     rpath
2178     stripping
2179 "
2180
2181 PATHS_LIST="
2182     bindir
2183     datadir
2184     docdir
2185     incdir
2186     libdir
2187     mandir
2188     pkgconfigdir
2189     prefix
2190     shlibdir
2191     install_name_dir
2192 "
2193
2194 CMDLINE_SET="
2195     $PATHS_LIST
2196     ar
2197     arch
2198     as
2199     assert_level
2200     build_suffix
2201     cc
2202     objcc
2203     cpu
2204     cross_prefix
2205     custom_allocator
2206     cxx
2207     dep_cc
2208     doxygen
2209     env
2210     extra_version
2211     gas
2212     host_cc
2213     host_cflags
2214     host_ld
2215     host_ldflags
2216     host_libs
2217     host_os
2218     install
2219     ld
2220     ln_s
2221     logfile
2222     malloc_prefix
2223     nm
2224     optflags
2225     pkg_config
2226     pkg_config_flags
2227     progs_suffix
2228     random_seed
2229     ranlib
2230     samples
2231     strip
2232     sws_max_filter_size
2233     sysinclude
2234     sysroot
2235     target_exec
2236     target_os
2237     target_path
2238     target_samples
2239     tempprefix
2240     toolchain
2241     valgrind
2242     yasmexe
2243 "
2244
2245 CMDLINE_APPEND="
2246     extra_cflags
2247     extra_cxxflags
2248     extra_objcflags
2249     host_cppflags
2250 "
2251
2252 # code dependency declarations
2253
2254 # architecture extensions
2255
2256 armv5te_deps="arm"
2257 armv6_deps="arm"
2258 armv6t2_deps="arm"
2259 armv8_deps="aarch64"
2260 neon_deps_any="aarch64 arm"
2261 intrinsics_neon_deps="neon"
2262 vfp_deps_any="aarch64 arm"
2263 vfpv3_deps="vfp"
2264 setend_deps="arm"
2265
2266 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2267
2268 loongson2_deps="mips"
2269 loongson3_deps="mips"
2270 mipsfpu_deps="mips"
2271 mipsdsp_deps="mips"
2272 mipsdspr2_deps="mips"
2273 mips32r2_deps="mips"
2274 mips32r5_deps="mips"
2275 mips32r6_deps="mips"
2276 mips64r2_deps="mips"
2277 mips64r6_deps="mips"
2278 msa_deps="mipsfpu"
2279 mmi_deps="mips"
2280
2281 altivec_deps="ppc"
2282 dcbzl_deps="ppc"
2283 ldbrx_deps="ppc"
2284 ppc4xx_deps="ppc"
2285 vsx_deps="altivec"
2286 power8_deps="vsx"
2287
2288 cpunop_deps="i686"
2289 x86_64_select="i686"
2290 x86_64_suggest="fast_cmov"
2291
2292 amd3dnow_deps="mmx"
2293 amd3dnowext_deps="amd3dnow"
2294 i686_deps="x86"
2295 mmx_deps="x86"
2296 mmxext_deps="mmx"
2297 sse_deps="mmxext"
2298 sse2_deps="sse"
2299 sse3_deps="sse2"
2300 ssse3_deps="sse3"
2301 sse4_deps="ssse3"
2302 sse42_deps="sse4"
2303 aesni_deps="sse42"
2304 avx_deps="sse42"
2305 xop_deps="avx"
2306 fma3_deps="avx"
2307 fma4_deps="avx"
2308 avx2_deps="avx"
2309
2310 mmx_external_deps="yasm"
2311 mmx_inline_deps="inline_asm"
2312 mmx_suggest="mmx_external mmx_inline"
2313
2314 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2315     eval dep=\$${ext}_deps
2316     eval ${ext}_external_deps='"${dep}_external"'
2317     eval ${ext}_inline_deps='"${dep}_inline"'
2318     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2319 done
2320
2321 aligned_stack_if_any="aarch64 ppc x86"
2322 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2323 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2324 fast_unaligned_if_any="aarch64 ppc x86"
2325 simd_align_16_if_any="altivec neon sse"
2326 simd_align_32_if_any="avx"
2327
2328 # system capabilities
2329 symver_if_any="symver_asm_label symver_gnu_asm"
2330 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2331
2332 # threading support
2333 atomics_gcc_if="sync_val_compare_and_swap"
2334 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2335 atomics_win32_if="MemoryBarrier"
2336 atomics_native_if_any="$ATOMICS_LIST"
2337 w32threads_deps="atomics_native"
2338 threads_if_any="$THREADS_LIST"
2339
2340 # subsystems
2341 dct_select="rdft"
2342 dirac_parse_select="golomb"
2343 error_resilience_select="me_cmp"
2344 faandct_deps="faan fdctdsp"
2345 faanidct_deps="faan idctdsp"
2346 h264dsp_select="startcode"
2347 frame_thread_encoder_deps="encoders threads"
2348 intrax8_select="blockdsp idctdsp"
2349 mdct_select="fft"
2350 mdct15_select="fft"
2351 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2352 mpeg_er_select="error_resilience"
2353 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2354 mpegaudiodsp_select="dct"
2355 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2356 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2357 vc1dsp_select="h264chroma qpeldsp startcode"
2358 rdft_select="fft"
2359
2360 # decoders / encoders
2361 aac_decoder_select="mdct15 mdct sinewin"
2362 aac_fixed_decoder_select="mdct sinewin"
2363 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2364 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2365 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2366 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2367 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2368 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2369 adpcm_g722_decoder_select="g722dsp"
2370 adpcm_g722_encoder_select="g722dsp"
2371 aic_decoder_select="golomb idctdsp"
2372 alac_encoder_select="lpc"
2373 als_decoder_select="bswapdsp"
2374 amrnb_decoder_select="lsp"
2375 amrwb_decoder_select="lsp"
2376 amv_decoder_select="sp5x_decoder exif"
2377 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2378 ape_decoder_select="bswapdsp llauddsp"
2379 apng_decoder_select="zlib"
2380 apng_encoder_select="llvidencdsp zlib"
2381 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2382 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2383 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2384 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2385 atrac1_decoder_select="mdct sinewin"
2386 atrac3_decoder_select="mdct"
2387 atrac3p_decoder_select="mdct sinewin"
2388 avrn_decoder_select="exif jpegtables"
2389 bink_decoder_select="blockdsp hpeldsp"
2390 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2391 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2392 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2393 cllc_decoder_select="bswapdsp"
2394 comfortnoise_encoder_select="lpc"
2395 cook_decoder_select="audiodsp mdct sinewin"
2396 cscd_decoder_select="lzo"
2397 cscd_decoder_suggest="zlib"
2398 dca_decoder_select="mdct"
2399 dds_decoder_select="texturedsp"
2400 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2401 dnxhd_decoder_select="blockdsp idctdsp"
2402 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2403 dvvideo_decoder_select="dvprofile idctdsp"
2404 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2405 dxa_decoder_select="zlib"
2406 dxv_decoder_select="lzf texturedsp"
2407 eac3_decoder_select="ac3_decoder"
2408 eac3_encoder_select="ac3_encoder"
2409 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2410 eatgq_decoder_select="aandcttables"
2411 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2412 exr_decoder_select="zlib"
2413 ffv1_decoder_select="golomb rangecoder"
2414 ffv1_encoder_select="rangecoder"
2415 ffvhuff_decoder_select="huffyuv_decoder"
2416 ffvhuff_encoder_select="huffyuv_encoder"
2417 fic_decoder_select="golomb"
2418 flac_decoder_select="flacdsp golomb"
2419 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2420 flashsv2_decoder_select="zlib"
2421 flashsv2_encoder_select="zlib"
2422 flashsv_decoder_select="zlib"
2423 flashsv_encoder_select="zlib"
2424 flv_decoder_select="h263_decoder"
2425 flv_encoder_select="h263_encoder"
2426 fourxm_decoder_select="blockdsp bswapdsp"
2427 fraps_decoder_select="bswapdsp huffman"
2428 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2429 g729_decoder_select="audiodsp"
2430 h261_decoder_select="mpegvideo"
2431 h261_encoder_select="aandcttables mpegvideoenc"
2432 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2433 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2434 h263i_decoder_select="h263_decoder"
2435 h263p_decoder_select="h263_decoder"
2436 h263p_encoder_select="h263_encoder"
2437 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2438 h264_decoder_suggest="error_resilience"
2439 hap_decoder_select="snappy texturedsp"
2440 hap_encoder_deps="libsnappy"
2441 hap_encoder_select="texturedspenc"
2442 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2443 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2444 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2445 iac_decoder_select="imc_decoder"
2446 imc_decoder_select="bswapdsp fft mdct sinewin"
2447 indeo3_decoder_select="hpeldsp"
2448 indeo4_decoder_select="ividsp"
2449 indeo5_decoder_select="ividsp"
2450 interplay_video_decoder_select="hpeldsp"
2451 jpegls_decoder_select="golomb mjpeg_decoder"
2452 jpegls_encoder_select="golomb"
2453 jv_decoder_select="blockdsp"
2454 lagarith_decoder_select="llviddsp"
2455 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2456 loco_decoder_select="golomb"
2457 magicyuv_decoder_select="llviddsp"
2458 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2459 metasound_decoder_select="lsp mdct sinewin"
2460 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2461 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2462 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2463 mjpegb_decoder_select="mjpeg_decoder"
2464 mlp_decoder_select="mlp_parser"
2465 motionpixels_decoder_select="bswapdsp"
2466 mp1_decoder_select="mpegaudio"
2467 mp1float_decoder_select="mpegaudio"
2468 mp2_decoder_select="mpegaudio"
2469 mp2float_decoder_select="mpegaudio"
2470 mp3_decoder_select="mpegaudio"
2471 mp3adu_decoder_select="mpegaudio"
2472 mp3adufloat_decoder_select="mpegaudio"
2473 mp3float_decoder_select="mpegaudio"
2474 mp3on4_decoder_select="mpegaudio"
2475 mp3on4float_decoder_select="mpegaudio"
2476 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2477 mpc8_decoder_select="mpegaudiodsp"
2478 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2479 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2480 mpegvideo_decoder_select="mpegvideo"
2481 mpeg1video_decoder_select="mpegvideo"
2482 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2483 mpeg2video_decoder_select="mpegvideo"
2484 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2485 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2486 mpeg4_encoder_select="h263_encoder"
2487 msa1_decoder_select="mss34dsp"
2488 msmpeg4v1_decoder_select="h263_decoder"
2489 msmpeg4v2_decoder_select="h263_decoder"
2490 msmpeg4v2_encoder_select="h263_encoder"
2491 msmpeg4v3_decoder_select="h263_decoder"
2492 msmpeg4v3_encoder_select="h263_encoder"
2493 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2494 mts2_decoder_select="mss34dsp"
2495 mxpeg_decoder_select="mjpeg_decoder"
2496 nellymoser_decoder_select="mdct sinewin"
2497 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2498 nuv_decoder_select="idctdsp lzo"
2499 on2avc_decoder_select="mdct"
2500 opus_decoder_deps="swresample"
2501 opus_decoder_select="mdct15"
2502 opus_encoder_select="audio_frame_queue mdct15"
2503 png_decoder_select="zlib"
2504 png_encoder_select="llvidencdsp zlib"
2505 prores_decoder_select="blockdsp idctdsp"
2506 prores_encoder_select="fdctdsp"
2507 qcelp_decoder_select="lsp"
2508 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2509 ra_144_decoder_select="audiodsp"
2510 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2511 ralf_decoder_select="golomb"
2512 rawvideo_decoder_select="bswapdsp"
2513 rscc_decoder_select="zlib"
2514 rtjpeg_decoder_select="me_cmp"
2515 rv10_decoder_select="h263_decoder"
2516 rv10_encoder_select="h263_encoder"
2517 rv20_decoder_select="h263_decoder"
2518 rv20_encoder_select="h263_encoder"
2519 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2520 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2521 screenpresso_decoder_select="zlib"
2522 shorten_decoder_select="golomb bswapdsp"
2523 sipr_decoder_select="lsp"
2524 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2525 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2526 sonic_decoder_select="golomb rangecoder"
2527 sonic_encoder_select="golomb rangecoder"
2528 sonic_ls_encoder_select="golomb rangecoder"
2529 sp5x_decoder_select="mjpeg_decoder"
2530 svq1_decoder_select="hpeldsp"
2531 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2532 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2533 svq3_decoder_suggest="zlib"
2534 tak_decoder_select="audiodsp"
2535 tdsc_decoder_select="zlib mjpeg_decoder"
2536 theora_decoder_select="vp3_decoder"
2537 thp_decoder_select="mjpeg_decoder"
2538 tiff_decoder_suggest="zlib lzma"
2539 tiff_encoder_suggest="zlib"
2540 truehd_decoder_select="mlp_parser"
2541 truemotion2_decoder_select="bswapdsp"
2542 truespeech_decoder_select="bswapdsp"
2543 tscc_decoder_select="zlib"
2544 twinvq_decoder_select="mdct lsp sinewin"
2545 txd_decoder_select="texturedsp"
2546 utvideo_decoder_select="bswapdsp llviddsp"
2547 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2548 vble_decoder_select="llviddsp"
2549 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2550 vc1_qsv_decoder_deps="libmfx"
2551 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2552 vc1image_decoder_select="vc1_decoder"
2553 vorbis_decoder_select="mdct"
2554 vorbis_encoder_select="mdct"
2555 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2556 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2557 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2558 vp6a_decoder_select="vp6_decoder"
2559 vp6f_decoder_select="vp6_decoder"
2560 vp7_decoder_select="h264pred videodsp vp8dsp"
2561 vp8_decoder_select="h264pred videodsp vp8dsp"
2562 vp9_decoder_select="videodsp vp9_parser"
2563 webp_decoder_select="vp8_decoder exif"
2564 wmalossless_decoder_select="llauddsp"
2565 wmapro_decoder_select="mdct sinewin wma_freqs"
2566 wmav1_decoder_select="mdct sinewin wma_freqs"
2567 wmav1_encoder_select="mdct sinewin wma_freqs"
2568 wmav2_decoder_select="mdct sinewin wma_freqs"
2569 wmav2_encoder_select="mdct sinewin wma_freqs"
2570 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2571 wmv1_decoder_select="h263_decoder"
2572 wmv1_encoder_select="h263_encoder"
2573 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2574 wmv2_encoder_select="h263_encoder wmv2dsp"
2575 wmv3_decoder_select="vc1_decoder"
2576 wmv3image_decoder_select="wmv3_decoder"
2577 xma1_decoder_select="wmapro_decoder"
2578 xma2_decoder_select="wmapro_decoder"
2579 zerocodec_decoder_select="zlib"
2580 zlib_decoder_select="zlib"
2581 zlib_encoder_select="zlib"
2582 zmbv_decoder_select="zlib"
2583 zmbv_encoder_select="zlib"
2584
2585 # platform codecs
2586 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2587 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2588
2589 # hardware accelerators
2590 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2591 cuda_deps_any="dlopen LoadLibrary"
2592 cuvid_deps="cuda"
2593 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2594 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2595 dxva2_extralibs="-luser32"
2596 vaapi_deps="va_va_h"
2597 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2598 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2599 vda_deps="vda_framework pthreads"
2600 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2601 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2602 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2603 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2604 xvmc_deps="X11_extensions_XvMClib_h"
2605
2606 h263_vaapi_hwaccel_deps="vaapi"
2607 h263_vaapi_hwaccel_select="h263_decoder"
2608 h263_videotoolbox_hwaccel_deps="videotoolbox"
2609 h263_videotoolbox_hwaccel_select="h263_decoder"
2610 h264_cuvid_hwaccel_deps="cuda cuvid"
2611 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2612 h264_d3d11va_hwaccel_deps="d3d11va"
2613 h264_d3d11va_hwaccel_select="h264_decoder"
2614 h264_dxva2_hwaccel_deps="dxva2"
2615 h264_dxva2_hwaccel_select="h264_decoder"
2616 h264_mediacodec_hwaccel_deps="mediacodec"
2617 h264_mmal_hwaccel_deps="mmal"
2618 h264_qsv_hwaccel_deps="libmfx"
2619 h264_vaapi_hwaccel_deps="vaapi"
2620 h264_vaapi_hwaccel_select="h264_decoder"
2621 h264_vda_hwaccel_deps="vda"
2622 h264_vda_hwaccel_select="h264_decoder"
2623 h264_vda_old_hwaccel_deps="vda"
2624 h264_vda_old_hwaccel_select="h264_decoder"
2625 h264_vdpau_hwaccel_deps="vdpau"
2626 h264_vdpau_hwaccel_select="h264_decoder"
2627 h264_videotoolbox_hwaccel_deps="videotoolbox"
2628 h264_videotoolbox_hwaccel_select="h264_decoder"
2629 hevc_cuvid_hwaccel_deps="cuda cuvid"
2630 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2631 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2632 hevc_d3d11va_hwaccel_select="hevc_decoder"
2633 hevc_mediacodec_hwaccel_deps="mediacodec"
2634 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2635 hevc_dxva2_hwaccel_select="hevc_decoder"
2636 hevc_qsv_hwaccel_deps="libmfx"
2637 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2638 hevc_vaapi_hwaccel_select="hevc_decoder"
2639 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2640 hevc_vdpau_hwaccel_select="hevc_decoder"
2641 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2642 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2643 mpeg_xvmc_hwaccel_deps="xvmc"
2644 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2645 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2646 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2647 mpeg1_vdpau_hwaccel_deps="vdpau"
2648 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2649 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2650 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2651 mpeg1_xvmc_hwaccel_deps="xvmc"
2652 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2653 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2654 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2655 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2656 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2657 mpeg2_dxva2_hwaccel_deps="dxva2"
2658 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2659 mpeg2_mmal_hwaccel_deps="mmal"
2660 mpeg2_qsv_hwaccel_deps="libmfx"
2661 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2662 mpeg2_vaapi_hwaccel_deps="vaapi"
2663 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2664 mpeg2_vdpau_hwaccel_deps="vdpau"
2665 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2666 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2667 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2668 mpeg2_xvmc_hwaccel_deps="xvmc"
2669 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2670 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2671 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2672 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2673 mpeg4_mmal_hwaccel_deps="mmal"
2674 mpeg4_vaapi_hwaccel_deps="vaapi"
2675 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2676 mpeg4_vdpau_hwaccel_deps="vdpau"
2677 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2678 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2679 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2680 vc1_cuvid_hwaccel_deps="cuda cuvid"
2681 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2682 vc1_d3d11va_hwaccel_deps="d3d11va"
2683 vc1_d3d11va_hwaccel_select="vc1_decoder"
2684 vc1_dxva2_hwaccel_deps="dxva2"
2685 vc1_dxva2_hwaccel_select="vc1_decoder"
2686 vc1_mmal_hwaccel_deps="mmal"
2687 vc1_qsv_hwaccel_deps="libmfx"
2688 vc1_qsv_hwaccel_select="qsvdec_vc1"
2689 vc1_vaapi_hwaccel_deps="vaapi"
2690 vc1_vaapi_hwaccel_select="vc1_decoder"
2691 vc1_vdpau_hwaccel_deps="vdpau"
2692 vc1_vdpau_hwaccel_select="vc1_decoder"
2693 vp8_cuvid_hwaccel_deps="cuda cuvid"
2694 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2695 vp9_cuvid_hwaccel_deps="cuda cuvid"
2696 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2697 vp8_mediacodec_hwaccel_deps="mediacodec"
2698 vp8_qsv_hwaccel_deps="libmfx"
2699 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2700 vp9_d3d11va_hwaccel_select="vp9_decoder"
2701 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2702 vp9_dxva2_hwaccel_select="vp9_decoder"
2703 vp9_mediacodec_hwaccel_deps="mediacodec"
2704 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2705 vp9_vaapi_hwaccel_select="vp9_decoder"
2706 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2707 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2708 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2709 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2710
2711 # hardware-accelerated codecs
2712 omx_deps="dlopen pthreads"
2713 omx_extralibs='$ldl'
2714 omx_rpi_select="omx"
2715 qsvdec_select="qsv"
2716 qsvenc_select="qsv"
2717 vaapi_encode_deps="vaapi"
2718
2719 hwupload_cuda_filter_deps="cuda"
2720 scale_npp_filter_deps="cuda libnpp"
2721
2722 nvenc_deps="cuda"
2723 nvenc_deps_any="dlopen LoadLibrary"
2724 nvenc_encoder_deps="nvenc"
2725
2726 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2727 h264_cuvid_decoder_deps="cuda cuvid"
2728 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2729 h264_mediacodec_decoder_deps="mediacodec"
2730 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2731 h264_mmal_decoder_deps="mmal"
2732 h264_nvenc_encoder_deps="nvenc"
2733 h264_omx_encoder_deps="omx"
2734 h264_qsv_decoder_deps="libmfx"
2735 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2736 h264_qsv_encoder_deps="libmfx"
2737 h264_qsv_encoder_select="qsvenc"
2738 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2739 h264_vaapi_encoder_select="vaapi_encode golomb"
2740 h264_vda_decoder_deps="vda"
2741 h264_vda_decoder_select="h264_decoder"
2742 h264_vdpau_decoder_deps="vdpau"
2743 h264_vdpau_decoder_select="h264_decoder"
2744 hevc_cuvid_decoder_deps="cuda cuvid"
2745 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2746 hevc_mediacodec_decoder_deps="mediacodec"
2747 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2748 hevc_nvenc_encoder_deps="nvenc"
2749 hevc_qsv_decoder_deps="libmfx"
2750 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2751 hevc_qsv_encoder_deps="libmfx"
2752 hevc_qsv_encoder_select="hevcparse qsvenc"
2753 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2754 hevc_vaapi_encoder_select="vaapi_encode golomb"
2755 mjpeg_cuvid_decoder_deps="cuda cuvid"
2756 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2757 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2758 mpeg1_cuvid_decoder_deps="cuda cuvid"
2759 mpeg1_vdpau_decoder_deps="vdpau"
2760 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2761 mpeg2_crystalhd_decoder_select="crystalhd"
2762 mpeg2_cuvid_decoder_deps="cuda cuvid"
2763 mpeg2_mmal_decoder_deps="mmal"
2764 mpeg2_qsv_decoder_deps="libmfx"
2765 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2766 mpeg2_qsv_encoder_deps="libmfx"
2767 mpeg2_qsv_encoder_select="qsvenc"
2768 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2769 mpeg2_vaapi_encoder_select="vaapi_encode"
2770 mpeg4_crystalhd_decoder_select="crystalhd"
2771 mpeg4_cuvid_decoder_deps="cuda cuvid"
2772 mpeg4_mediacodec_decoder_deps="mediacodec"
2773 mpeg4_mmal_decoder_deps="mmal"
2774 mpeg4_omx_encoder_deps="omx"
2775 mpeg4_vdpau_decoder_deps="vdpau"
2776 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2777 mpeg_vdpau_decoder_deps="vdpau"
2778 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2779 msmpeg4_crystalhd_decoder_select="crystalhd"
2780 nvenc_h264_encoder_deps="nvenc"
2781 nvenc_hevc_encoder_deps="nvenc"
2782 vc1_crystalhd_decoder_select="crystalhd"
2783 vc1_cuvid_decoder_deps="cuda cuvid"
2784 vc1_mmal_decoder_deps="mmal"
2785 vc1_vdpau_decoder_deps="vdpau"
2786 vc1_vdpau_decoder_select="vc1_decoder"
2787 vp8_cuvid_decoder_deps="cuda cuvid"
2788 vp8_mediacodec_decoder_deps="mediacodec"
2789 vp8_qsv_decoder_deps="libmfx"
2790 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2791 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2792 vp8_vaapi_encoder_select="vaapi_encode"
2793 vp9_cuvid_decoder_deps="cuda cuvid"
2794 vp9_mediacodec_decoder_deps="mediacodec"
2795 wmv3_crystalhd_decoder_select="crystalhd"
2796 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2797
2798 # parsers
2799 h264_parser_select="golomb h264dsp h264parse"
2800 hevc_parser_select="golomb hevcparse"
2801 mpegaudio_parser_select="mpegaudioheader"
2802 mpegvideo_parser_select="mpegvideo"
2803 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2804 vc1_parser_select="vc1dsp"
2805
2806 # bitstream_filters
2807 mjpeg2jpeg_bsf_select="jpegtables"
2808
2809 # external libraries
2810 aac_at_decoder_deps="audiotoolbox"
2811 ac3_at_decoder_deps="audiotoolbox"
2812 ac3_at_decoder_select="ac3_parser"
2813 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2814 alac_at_decoder_deps="audiotoolbox"
2815 amr_nb_at_decoder_deps="audiotoolbox"
2816 avisynth_deps_any="dlopen LoadLibrary"
2817 avisynth_demuxer_deps="avisynth"
2818 avisynth_demuxer_select="riffdec"
2819 eac3_at_decoder_deps="audiotoolbox"
2820 eac3_at_decoder_select="ac3_parser"
2821 gsm_ms_at_decoder_deps="audiotoolbox"
2822 ilbc_at_decoder_deps="audiotoolbox"
2823 mp1_at_decoder_deps="audiotoolbox"
2824 mp2_at_decoder_deps="audiotoolbox"
2825 mp3_at_decoder_deps="audiotoolbox"
2826 mp1_at_decoder_select="mpegaudioheader"
2827 mp2_at_decoder_select="mpegaudioheader"
2828 mp3_at_decoder_select="mpegaudioheader"
2829 pcm_alaw_at_decoder_deps="audiotoolbox"
2830 pcm_mulaw_at_decoder_deps="audiotoolbox"
2831 qdmc_at_decoder_deps="audiotoolbox"
2832 qdm2_at_decoder_deps="audiotoolbox"
2833 aac_at_encoder_deps="audiotoolbox"
2834 aac_at_encoder_select="audio_frame_queue"
2835 alac_at_encoder_deps="audiotoolbox"
2836 alac_at_encoder_select="audio_frame_queue"
2837 ilbc_at_encoder_deps="audiotoolbox"
2838 ilbc_at_encoder_select="audio_frame_queue"
2839 pcm_alaw_at_encoder_deps="audiotoolbox"
2840 pcm_alaw_at_encoder_select="audio_frame_queue"
2841 pcm_mulaw_at_encoder_deps="audiotoolbox"
2842 pcm_mulaw_at_encoder_select="audio_frame_queue"
2843 chromaprint_muxer_deps="chromaprint"
2844 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2845 libcelt_decoder_deps="libcelt"
2846 libfdk_aac_decoder_deps="libfdk_aac"
2847 libfdk_aac_encoder_deps="libfdk_aac"
2848 libfdk_aac_encoder_select="audio_frame_queue"
2849 libgme_demuxer_deps="libgme"
2850 libgsm_decoder_deps="libgsm"
2851 libgsm_encoder_deps="libgsm"
2852 libgsm_ms_decoder_deps="libgsm"
2853 libgsm_ms_encoder_deps="libgsm"
2854 libilbc_decoder_deps="libilbc"
2855 libilbc_encoder_deps="libilbc"
2856 libkvazaar_encoder_deps="libkvazaar"
2857 libmodplug_demuxer_deps="libmodplug"
2858 libmp3lame_encoder_deps="libmp3lame"
2859 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2860 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2861 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2862 libopencore_amrnb_encoder_select="audio_frame_queue"
2863 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2864 libopenh264_decoder_deps="libopenh264"
2865 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2866 libopenh264_encoder_deps="libopenh264"
2867 libopenjpeg_decoder_deps="libopenjpeg"
2868 libopenjpeg_encoder_deps="libopenjpeg"
2869 libopenmpt_demuxer_deps="libopenmpt"
2870 libopus_decoder_deps="libopus"
2871 libopus_encoder_deps="libopus"
2872 libopus_encoder_select="audio_frame_queue"
2873 libschroedinger_decoder_deps="libschroedinger"
2874 libschroedinger_encoder_deps="libschroedinger"
2875 libshine_encoder_deps="libshine"
2876 libshine_encoder_select="audio_frame_queue"
2877 libspeex_decoder_deps="libspeex"
2878 libspeex_encoder_deps="libspeex"
2879 libspeex_encoder_select="audio_frame_queue"
2880 libtheora_encoder_deps="libtheora"
2881 libtwolame_encoder_deps="libtwolame"
2882 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2883 libvorbis_decoder_deps="libvorbis"
2884 libvorbis_encoder_deps="libvorbis"
2885 libvorbis_encoder_select="audio_frame_queue"
2886 libvpx_vp8_decoder_deps="libvpx"
2887 libvpx_vp8_encoder_deps="libvpx"
2888 libvpx_vp9_decoder_deps="libvpx"
2889 libvpx_vp9_encoder_deps="libvpx"
2890 libwavpack_encoder_deps="libwavpack"
2891 libwavpack_encoder_select="audio_frame_queue"
2892 libwebp_encoder_deps="libwebp"
2893 libwebp_anim_encoder_deps="libwebp"
2894 libx262_encoder_deps="libx262"
2895 libx264_encoder_deps="libx264"
2896 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2897 libx264rgb_encoder_select="libx264_encoder"
2898 libx265_encoder_deps="libx265"
2899 libxavs_encoder_deps="libxavs"
2900 libxvid_encoder_deps="libxvid"
2901 libzvbi_teletext_decoder_deps="libzvbi"
2902 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2903 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2904 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2905 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2906 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2907
2908 # demuxers / muxers
2909 ac3_demuxer_select="ac3_parser"
2910 aiff_muxer_select="iso_media"
2911 asf_demuxer_select="riffdec"
2912 asf_o_demuxer_select="riffdec"
2913 asf_muxer_select="riffenc"
2914 asf_stream_muxer_select="asf_muxer"
2915 avi_demuxer_select="iso_media riffdec exif"
2916 avi_muxer_select="riffenc"
2917 caf_demuxer_select="iso_media riffdec"
2918 caf_muxer_select="iso_media"
2919 dash_muxer_select="mp4_muxer"
2920 dirac_demuxer_select="dirac_parser"
2921 dts_demuxer_select="dca_parser"
2922 dtshd_demuxer_select="dca_parser"
2923 dv_demuxer_select="dvprofile"
2924 dv_muxer_select="dvprofile"
2925 dxa_demuxer_select="riffdec"
2926 eac3_demuxer_select="ac3_parser"
2927 f4v_muxer_select="mov_muxer"
2928 fifo_muxer_deps="threads"
2929 flac_demuxer_select="flac_parser"
2930 hds_muxer_select="flv_muxer"
2931 hls_muxer_select="mpegts_muxer"
2932 image2_alias_pix_demuxer_select="image2_demuxer"
2933 image2_brender_pix_demuxer_select="image2_demuxer"
2934 ipod_muxer_select="mov_muxer"
2935 ismv_muxer_select="mov_muxer"
2936 libnut_demuxer_deps="libnut"
2937 libnut_muxer_deps="libnut"
2938 matroska_audio_muxer_select="matroska_muxer"
2939 matroska_demuxer_select="iso_media riffdec"
2940 matroska_demuxer_suggest="bzlib lzo zlib"
2941 matroska_muxer_select="iso_media riffenc"
2942 mmf_muxer_select="riffenc"
2943 mov_demuxer_select="iso_media riffdec"
2944 mov_demuxer_suggest="zlib"
2945 mov_muxer_select="iso_media riffenc rtpenc_chain"
2946 mp3_demuxer_select="mpegaudio_parser"
2947 mp3_muxer_select="mpegaudioheader"
2948 mp4_muxer_select="mov_muxer"
2949 mpegts_demuxer_select="iso_media"
2950 mpegts_muxer_select="adts_muxer latm_muxer"
2951 mpegtsraw_demuxer_select="mpegts_demuxer"
2952 mxf_d10_muxer_select="mxf_muxer"
2953 mxf_opatom_muxer_select="mxf_muxer"
2954 nut_muxer_select="riffenc"
2955 nuv_demuxer_select="riffdec"
2956 oga_muxer_select="ogg_muxer"
2957 ogg_demuxer_select="dirac_parse"
2958 ogv_muxer_select="ogg_muxer"
2959 opus_muxer_select="ogg_muxer"
2960 psp_muxer_select="mov_muxer"
2961 rtp_demuxer_select="sdp_demuxer"
2962 rtp_muxer_select="golomb"
2963 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2964 rtsp_demuxer_select="http_protocol rtpdec"
2965 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2966 sap_demuxer_select="sdp_demuxer"
2967 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2968 sdp_demuxer_select="rtpdec"
2969 smoothstreaming_muxer_select="ismv_muxer"
2970 spdif_muxer_select="aac_parser"
2971 spx_muxer_select="ogg_muxer"
2972 swf_demuxer_suggest="zlib"
2973 tak_demuxer_select="tak_parser"
2974 tg2_muxer_select="mov_muxer"
2975 tgp_muxer_select="mov_muxer"
2976 vobsub_demuxer_select="mpegps_demuxer"
2977 w64_demuxer_select="wav_demuxer"
2978 w64_muxer_select="wav_muxer"
2979 wav_demuxer_select="riffdec"
2980 wav_muxer_select="riffenc"
2981 webm_muxer_select="iso_media riffenc"
2982 webm_dash_manifest_demuxer_select="matroska_demuxer"
2983 wtv_demuxer_select="mpegts_demuxer riffdec"
2984 wtv_muxer_select="mpegts_muxer riffenc"
2985 xmv_demuxer_select="riffdec"
2986 xwma_demuxer_select="riffdec"
2987
2988 # indevs / outdevs
2989 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2990 alsa_outdev_deps="alsa_asoundlib_h"
2991 avfoundation_indev_deps="pthreads"
2992 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2993 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2994 caca_outdev_deps="libcaca"
2995 decklink_indev_deps="decklink pthreads"
2996 decklink_indev_extralibs="-lstdc++"
2997 decklink_outdev_deps="decklink pthreads"
2998 decklink_outdev_extralibs="-lstdc++"
2999 dshow_indev_deps="IBaseFilter"
3000 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3001 dv1394_indev_deps="dv1394"
3002 dv1394_indev_select="dv_demuxer"
3003 fbdev_indev_deps="linux_fb_h"
3004 fbdev_outdev_deps="linux_fb_h"
3005 gdigrab_indev_deps="CreateDIBSection"
3006 gdigrab_indev_extralibs="-lgdi32"
3007 gdigrab_indev_select="bmp_decoder"
3008 iec61883_indev_deps="libiec61883"
3009 jack_indev_deps="jack_jack_h"
3010 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3011 lavfi_indev_deps="avfilter"
3012 libcdio_indev_deps="libcdio"
3013 libdc1394_indev_deps="libdc1394"
3014 libv4l2_indev_deps="libv4l2"
3015 openal_indev_deps="openal"
3016 opengl_outdev_deps="opengl"
3017 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3018 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3019 pulse_indev_deps="libpulse"
3020 pulse_outdev_deps="libpulse"
3021 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3022 qtkit_indev_select="qtkit"
3023 sdl2_outdev_deps="sdl2"
3024 sndio_indev_deps="sndio_h"
3025 sndio_outdev_deps="sndio_h"
3026 v4l_indev_deps="linux_videodev_h"
3027 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3028 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3029 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3030 vfwcap_indev_extralibs="-lavicap32"
3031 xcbgrab_indev_deps="libxcb"
3032 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3033 xv_outdev_extralibs="-lXv -lX11 -lXext"
3034
3035 # protocols
3036 async_protocol_deps="threads"
3037 bluray_protocol_deps="libbluray"
3038 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3039 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3040 ffrtmpcrypt_protocol_select="tcp_protocol"
3041 ffrtmphttp_protocol_deps="!librtmp_protocol"
3042 ffrtmphttp_protocol_select="http_protocol"
3043 ftp_protocol_select="tcp_protocol"
3044 gopher_protocol_select="network"
3045 http_protocol_select="tcp_protocol"
3046 httpproxy_protocol_select="tcp_protocol"
3047 https_protocol_select="tls_protocol"
3048 icecast_protocol_select="http_protocol"
3049 librtmp_protocol_deps="librtmp"
3050 librtmpe_protocol_deps="librtmp"
3051 librtmps_protocol_deps="librtmp"
3052 librtmpt_protocol_deps="librtmp"
3053 librtmpte_protocol_deps="librtmp"
3054 libsmbclient_protocol_deps="libsmbclient gplv3"
3055 libssh_protocol_deps="libssh"
3056 mmsh_protocol_select="http_protocol"
3057 mmst_protocol_select="network"
3058 rtmp_protocol_deps="!librtmp_protocol"
3059 rtmp_protocol_select="tcp_protocol"
3060 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3061 rtmps_protocol_deps="!librtmp_protocol"
3062 rtmps_protocol_select="tls_protocol"
3063 rtmpt_protocol_select="ffrtmphttp_protocol"
3064 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3065 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3066 rtp_protocol_select="udp_protocol"
3067 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3068 sctp_protocol_select="network"
3069 srtp_protocol_select="rtp_protocol srtp"
3070 tcp_protocol_select="network"
3071 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3072 tls_gnutls_protocol_select="tcp_protocol"
3073 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3074 tls_openssl_protocol_select="tcp_protocol"
3075 tls_schannel_protocol_deps="schannel"
3076 tls_schannel_protocol_select="tcp_protocol"
3077 tls_securetransport_protocol_deps="securetransport"
3078 tls_securetransport_protocol_select="tcp_protocol"
3079 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3080 udp_protocol_select="network"
3081 udplite_protocol_select="network"
3082 unix_protocol_deps="sys_un_h"
3083 unix_protocol_select="network"
3084
3085 # filters
3086 afftfilt_filter_deps="avcodec"
3087 afftfilt_filter_select="fft"
3088 amovie_filter_deps="avcodec avformat"
3089 aresample_filter_deps="swresample"
3090 ass_filter_deps="libass"
3091 atempo_filter_deps="avcodec"
3092 atempo_filter_select="rdft"
3093 azmq_filter_deps="libzmq"
3094 blackframe_filter_deps="gpl"
3095 boxblur_filter_deps="gpl"
3096 bs2b_filter_deps="libbs2b"
3097 colormatrix_filter_deps="gpl"
3098 cover_rect_filter_deps="avcodec avformat gpl"
3099 cropdetect_filter_deps="gpl"
3100 deinterlace_qsv_filter_deps="libmfx"
3101 deinterlace_vaapi_filter_deps="vaapi"
3102 delogo_filter_deps="gpl"
3103 deshake_filter_select="pixelutils"
3104 drawtext_filter_deps="libfreetype"
3105 eq_filter_deps="gpl"
3106 fftfilt_filter_deps="avcodec"
3107 fftfilt_filter_select="rdft"
3108 find_rect_filter_deps="avcodec avformat gpl"
3109 firequalizer_filter_deps="avcodec"
3110 firequalizer_filter_select="rdft"
3111 flite_filter_deps="libflite"
3112 framerate_filter_select="pixelutils"
3113 frei0r_filter_deps="frei0r dlopen"
3114 frei0r_src_filter_deps="frei0r dlopen"
3115 fspp_filter_deps="gpl"
3116 geq_filter_deps="gpl"
3117 histeq_filter_deps="gpl"
3118 hqdn3d_filter_deps="gpl"
3119 interlace_filter_deps="gpl"
3120 kerndeint_filter_deps="gpl"
3121 ladspa_filter_deps="ladspa dlopen"
3122 mcdeint_filter_deps="avcodec gpl"
3123 movie_filter_deps="avcodec avformat"
3124 mpdecimate_filter_deps="gpl"
3125 mpdecimate_filter_select="pixelutils"
3126 mptestsrc_filter_deps="gpl"
3127 negate_filter_deps="lut_filter"
3128 nnedi_filter_deps="gpl"
3129 ocr_filter_deps="libtesseract"
3130 ocv_filter_deps="libopencv"
3131 owdenoise_filter_deps="gpl"
3132 pan_filter_deps="swresample"
3133 perspective_filter_deps="gpl"
3134 phase_filter_deps="gpl"
3135 pp7_filter_deps="gpl"
3136 pp_filter_deps="gpl postproc"
3137 pullup_filter_deps="gpl"
3138 removelogo_filter_deps="avcodec avformat swscale"
3139 repeatfields_filter_deps="gpl"
3140 resample_filter_deps="avresample"
3141 rubberband_filter_deps="librubberband"
3142 sab_filter_deps="gpl swscale"
3143 scale2ref_filter_deps="swscale"
3144 scale_filter_deps="swscale"
3145 scale_qsv_filter_deps="libmfx"
3146 select_filter_select="pixelutils"
3147 showcqt_filter_deps="avcodec avformat swscale"
3148 showcqt_filter_select="fft"
3149 showfreqs_filter_deps="avcodec"
3150 showfreqs_filter_select="fft"
3151 showspectrum_filter_deps="avcodec"
3152 showspectrum_filter_select="fft"
3153 showspectrumpic_filter_deps="avcodec"
3154 showspectrumpic_filter_select="fft"
3155 signature_filter_deps="gpl avcodec avformat"
3156 smartblur_filter_deps="gpl swscale"
3157 sofalizer_filter_deps="netcdf avcodec"
3158 sofalizer_filter_select="fft"
3159 spectrumsynth_filter_deps="avcodec"
3160 spectrumsynth_filter_select="fft"
3161 spp_filter_deps="gpl avcodec"
3162 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3163 stereo3d_filter_deps="gpl"
3164 subtitles_filter_deps="avformat avcodec libass"
3165 super2xsai_filter_deps="gpl"
3166 pixfmts_super2xsai_test_deps="super2xsai_filter"
3167 tinterlace_filter_deps="gpl"
3168 tinterlace_merge_test_deps="tinterlace_filter"
3169 tinterlace_pad_test_deps="tinterlace_filter"
3170 uspp_filter_deps="gpl avcodec"
3171 vaguedenoiser_filter_deps="gpl"
3172 vidstabdetect_filter_deps="libvidstab"
3173 vidstabtransform_filter_deps="libvidstab"
3174 zmq_filter_deps="libzmq"
3175 zoompan_filter_deps="swscale"
3176 zscale_filter_deps="libzimg"
3177 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3178
3179 # examples
3180 avio_dir_cmd_deps="avformat avutil"
3181 avio_reading_deps="avformat avcodec avutil"
3182 decode_audio_example_deps="avcodec avutil"
3183 decode_video_example_deps="avcodec avutil"
3184 demuxing_decoding_example_deps="avcodec avformat avutil"
3185 encode_audio_example_deps="avcodec avutil"
3186 encode_video_example_deps="avcodec avutil"
3187 extract_mvs_example_deps="avcodec avformat avutil"
3188 filter_audio_example_deps="avfilter avutil"
3189 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3190 filtering_video_example_deps="avfilter avcodec avformat avutil"
3191 http_multiclient_example_deps="avformat avutil fork"
3192 metadata_example_deps="avformat avutil"
3193 muxing_example_deps="avcodec avformat avutil swscale"
3194 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3195 remuxing_example_deps="avcodec avformat avutil"
3196 resampling_audio_example_deps="avutil swresample"
3197 scaling_video_example_deps="avutil swscale"
3198 transcode_aac_example_deps="avcodec avformat swresample"
3199 transcoding_example_deps="avfilter avcodec avformat avutil"
3200
3201 # libraries, in linking order
3202 avcodec_deps="avutil"
3203 avdevice_deps="avformat avcodec avutil"
3204 avfilter_deps="avutil"
3205 avformat_deps="avcodec avutil"
3206 avresample_deps="avutil"
3207 postproc_deps="avutil gpl"
3208 swresample_deps="avutil"
3209 swscale_deps="avutil"
3210
3211 # programs
3212 ffmpeg_deps="avcodec avfilter avformat swresample"
3213 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3214                null_filter
3215                trim_filter"
3216 ffplay_deps="avcodec avformat swscale swresample sdl2"
3217 ffplay_libs='$sdl2_libs'
3218 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3219 ffprobe_deps="avcodec avformat"
3220 ffserver_deps="avformat fork sarestart"
3221 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3222
3223 # documentation
3224 podpages_deps="perl"
3225 manpages_deps="perl pod2man"
3226 htmlpages_deps="perl"
3227 htmlpages_deps_any="makeinfo_html texi2html"
3228 txtpages_deps="perl makeinfo"
3229 doc_deps_any="manpages htmlpages podpages txtpages"
3230
3231 # default parameters
3232
3233 logfile="config.log"
3234
3235 # installation paths
3236 prefix_default="/usr/local"
3237 bindir_default='${prefix}/bin'
3238 datadir_default='${prefix}/share/ffmpeg'
3239 docdir_default='${prefix}/share/doc/ffmpeg'
3240 incdir_default='${prefix}/include'
3241 libdir_default='${prefix}/lib'
3242 mandir_default='${prefix}/share/man'
3243
3244 # toolchain
3245 ar_default="ar"
3246 cc_default="gcc"
3247 cxx_default="g++"
3248 host_cc_default="gcc"
3249 doxygen_default="doxygen"
3250 install="install"
3251 ln_s_default="ln -s -f"
3252 nm_default="nm -g"
3253 objformat="elf"
3254 pkg_config_default=pkg-config
3255 ranlib_default="ranlib"
3256 strip_default="strip"
3257 version_script='--version-script'
3258 yasmexe_default="yasm"
3259 windres_default="windres"
3260
3261 # OS
3262 target_os_default=$(tolower $(uname -s))
3263 host_os=$target_os_default
3264
3265 # machine
3266 if test "$target_os_default" = aix; then
3267     arch_default=$(uname -p)
3268     strip_default="strip -X32_64"
3269 else
3270     arch_default=$(uname -m)
3271 fi
3272 cpu="generic"
3273 intrinsics="none"
3274
3275 # configurable options
3276 enable $PROGRAM_LIST
3277 enable $DOCUMENT_LIST
3278 enable $EXAMPLE_LIST
3279 enable $(filter_out avresample $LIBRARY_LIST)
3280 enable stripping
3281
3282 enable asm
3283 enable debug
3284 enable doc
3285 enable faan faandct faanidct
3286 enable optimizations
3287 enable runtime_cpudetect
3288 enable safe_bitstream_reader
3289 enable static
3290 enable swscale_alpha
3291 enable valgrind_backtrace
3292
3293 sws_max_filter_size_default=256
3294 set_default sws_max_filter_size
3295
3296 # build settings
3297 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3298 LIBPREF="lib"
3299 LIBSUF=".a"
3300 FULLNAME='$(NAME)$(BUILDSUF)'
3301 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3302 SLIBPREF="lib"
3303 SLIBSUF=".so"
3304 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3305 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3306 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3307 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3308 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3309 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3310 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3311
3312 asflags_filter=echo
3313 cflags_filter=echo
3314 ldflags_filter=echo
3315
3316 AS_C='-c'
3317 AS_O='-o $@'
3318 CC_C='-c'
3319 CC_E='-E -o $@'
3320 CC_O='-o $@'
3321 CXX_C='-c'
3322 CXX_O='-o $@'
3323 OBJCC_C='-c'
3324 OBJCC_E='-E -o $@'
3325 OBJCC_O='-o $@'
3326 LD_O='-o $@'
3327 LD_LIB='-l%'
3328 LD_PATH='-L'
3329 HOSTCC_C='-c'
3330 HOSTCC_E='-E -o $@'
3331 HOSTCC_O='-o $@'
3332 HOSTLD_O='-o $@'
3333
3334 host_libs='-lm'
3335 host_cflags_filter=echo
3336 host_ldflags_filter=echo
3337
3338 target_path='$(CURDIR)'
3339
3340 # since the object filename is not given with the -MM flag, the compiler
3341 # is only able to print the basename, and we must add the path ourselves
3342 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3343 DEPFLAGS='-MM'
3344
3345 # find source path
3346 if test -f configure; then
3347     source_path=.
3348 else
3349     source_path=$(cd $(dirname "$0"); pwd)
3350     case "$source_path" in
3351         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3352     esac
3353     test -e "$source_path/config.h" &&
3354         die "Out of tree builds are impossible with config.h in source dir."
3355 fi
3356
3357 for v in "$@"; do
3358     r=${v#*=}
3359     l=${v%"$r"}
3360     r=$(sh_quote "$r")
3361     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3362 done
3363
3364 find_things(){
3365     thing=$1
3366     pattern=$2
3367     file=$source_path/$3
3368     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3369 }
3370
3371 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3372 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3373 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3374 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3375 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3376 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3377 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3378 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3379 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3380
3381 find_things_extern(){
3382     thing=$1
3383     pattern=$2
3384     file=$source_path/$3
3385     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3386 }
3387
3388 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3389 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3390
3391 ALL_COMPONENTS="
3392     $BSF_LIST
3393     $DECODER_LIST
3394     $DEMUXER_LIST
3395     $ENCODER_LIST
3396     $FILTER_LIST
3397     $HWACCEL_LIST
3398     $INDEV_LIST
3399     $MUXER_LIST
3400     $OUTDEV_LIST
3401     $PARSER_LIST
3402     $PROTOCOL_LIST
3403 "
3404
3405 for n in $COMPONENT_LIST; do
3406     v=$(toupper ${n%s})_LIST
3407     eval enable \$$v
3408     eval ${n}_if_any="\$$v"
3409 done
3410
3411 enable $ARCH_EXT_LIST
3412
3413 die_unknown(){
3414     echo "Unknown option \"$1\"."
3415     echo "See $0 --help for available options."
3416     exit 1
3417 }
3418
3419 print_in_columns() {
3420     cols=$(expr $ncols / 24)
3421     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3422 }
3423
3424 show_list() {
3425     suffix=_$1
3426     shift
3427     echo $* | sed s/$suffix//g | print_in_columns
3428     exit 0
3429 }
3430
3431 rand_list(){
3432     IFS=', '
3433     set -- $*
3434     unset IFS
3435     for thing; do
3436         comp=${thing%:*}
3437         prob=${thing#$comp}
3438         prob=${prob#:}
3439         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3440         echo "prob ${prob:-0.5}"
3441         printf '%s\n' $comp
3442     done
3443 }
3444
3445 do_random(){
3446     action=$1
3447     shift
3448     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3449     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3450 }
3451
3452 for opt do
3453     optval="${opt#*=}"
3454     case "$opt" in
3455         --extra-ldflags=*)
3456             add_ldflags $optval
3457         ;;
3458         --extra-ldexeflags=*)
3459             add_ldexeflags $optval
3460         ;;
3461         --extra-ldlibflags=*)
3462             add_ldlibflags $optval
3463         ;;
3464         --extra-libs=*)
3465             add_extralibs $optval
3466         ;;
3467         --disable-devices)
3468             disable $INDEV_LIST $OUTDEV_LIST
3469         ;;
3470         --enable-debug=*)
3471             debuglevel="$optval"
3472         ;;
3473         --disable-programs)
3474             disable $PROGRAM_LIST
3475         ;;
3476         --disable-everything)
3477             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3478         ;;
3479         --disable-all)
3480             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3481             disable $LIBRARY_LIST $PROGRAM_LIST doc
3482             enable avutil
3483         ;;
3484         --enable-random|--disable-random)
3485             action=${opt%%-random}
3486             do_random ${action#--} $COMPONENT_LIST
3487         ;;
3488         --enable-random=*|--disable-random=*)
3489             action=${opt%%-random=*}
3490             do_random ${action#--} $optval
3491         ;;
3492         --enable-*=*|--disable-*=*)
3493             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3494             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3495             eval list=\$$(toupper $thing)_LIST
3496             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3497             list=$(filter "$name" $list)
3498             [ "$list" = "" ] && warn "Option $opt did not match anything"
3499             $action $list
3500         ;;
3501         --enable-?*|--disable-?*)
3502             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3503             if is_in $option $COMPONENT_LIST; then
3504                 test $action = disable && action=unset
3505                 eval $action \$$(toupper ${option%s})_LIST
3506             elif is_in $option $CMDLINE_SELECT; then
3507                 $action $option
3508             else
3509                 die_unknown $opt
3510             fi
3511         ;;
3512         --list-*)
3513             NAME="${opt#--list-}"
3514             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3515             NAME=${NAME%s}
3516             eval show_list $NAME \$$(toupper $NAME)_LIST
3517         ;;
3518         --help|-h) show_help
3519         ;;
3520         --quiet|-q) quiet=yes
3521         ;;
3522         --fatal-warnings) enable fatal_warnings
3523         ;;
3524         *)
3525             optname="${opt%%=*}"
3526             optname="${optname#--}"
3527             optname=$(echo "$optname" | sed 's/-/_/g')
3528             if is_in $optname $CMDLINE_SET; then
3529                 eval $optname='$optval'
3530             elif is_in $optname $CMDLINE_APPEND; then
3531                 append $optname "$optval"
3532             else
3533                 die_unknown $opt
3534             fi
3535         ;;
3536     esac
3537 done
3538
3539 for e in $env; do
3540     eval "export $e"
3541 done
3542
3543 # Mark specifically enabled, but normally autodetected libraries as requested.
3544 for lib in $AUTODETECT_LIBS; do
3545     enabled $lib && request $lib
3546 done
3547
3548 # Enable platform codecs by default.
3549 enable_weak audiotoolbox
3550
3551 # Enable hwaccels by default.
3552 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3553 enable_weak xlib
3554
3555 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3556
3557 disabled logging && logfile=/dev/null
3558
3559 die_license_disabled() {
3560     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3561 }
3562
3563 die_license_disabled_gpl() {
3564     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3565 }
3566
3567 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3568 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3569
3570 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3571 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3572
3573 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3574
3575 # Disable all the library-specific components if the library itself
3576 # is disabled, see AVCODEC_LIST and following _LIST variables.
3577
3578 disable_components(){
3579     disabled ${1} && disable $(
3580         eval components="\$$(toupper ${1})_COMPONENTS"
3581         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3582     )
3583 }
3584
3585 map 'disable_components $v' $LIBRARY_LIST
3586
3587 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3588 set >> $logfile
3589
3590 test -n "$valgrind" && toolchain="valgrind-memcheck"
3591
3592 case "$toolchain" in
3593     *-asan)
3594         cc_default="${toolchain%-asan}"
3595         add_cflags  -fsanitize=address
3596         add_ldflags -fsanitize=address
3597     ;;
3598     *-msan)
3599         cc_default="${toolchain%-msan}"
3600         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3601         add_ldflags -fsanitize=memory
3602     ;;
3603     *-tsan)
3604         cc_default="${toolchain%-tsan}"
3605         add_cflags  -fsanitize=thread -fPIE
3606         add_ldflags -fsanitize=thread -pie
3607         case "$toolchain" in
3608             gcc-tsan)
3609                 add_cflags  -fPIC
3610                 add_ldflags -fPIC
3611                 ;;
3612         esac
3613     ;;
3614     *-usan)
3615         cc_default="${toolchain%-usan}"
3616         add_cflags  -fsanitize=undefined
3617         add_ldflags -fsanitize=undefined
3618     ;;
3619     valgrind-*)
3620         target_exec_default="valgrind"
3621         case "$toolchain" in
3622             valgrind-massif)
3623                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3624                 ;;
3625             valgrind-memcheck)
3626                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3627                 ;;
3628         esac
3629     ;;
3630     msvc)
3631         # Check whether the current MSVC version needs the C99 converter.
3632         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3633         # support enough of C99 to build ffmpeg. Default to the new
3634         # behaviour if the regexp was unable to match anything, since this
3635         # successfully parses the version number of existing supported
3636         # versions that require the converter (MSVC 2010 and 2012).
3637         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3638         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3639             cc_default="cl"
3640         else
3641             cc_default="c99wrap cl"
3642         fi
3643         ld_default="$source_path/compat/windows/mslink"
3644         nm_default="dumpbin -symbols"
3645         ar_default="lib"
3646         case "$arch" in
3647         arm*)
3648             as_default="armasm"
3649             ;;
3650         esac
3651         target_os_default="win32"
3652         # Use a relative path for TMPDIR. This makes sure all the
3653         # ffconf temp files are written with a relative path, avoiding
3654         # issues with msys/win32 path conversion for MSVC parameters
3655         # such as -Fo<file> or -out:<file>.
3656         TMPDIR=.
3657     ;;
3658     icl)
3659         cc_default="icl"
3660         ld_default="xilink"
3661         nm_default="dumpbin -symbols"
3662         ar_default="xilib"
3663         target_os_default="win32"
3664         TMPDIR=.
3665     ;;
3666     gcov)
3667         add_cflags  -fprofile-arcs -ftest-coverage
3668         add_ldflags -fprofile-arcs -ftest-coverage
3669     ;;
3670     llvm-cov)
3671         add_cflags -fprofile-arcs -ftest-coverage
3672         add_ldflags --coverage
3673     ;;
3674     hardened)
3675         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3676         add_cflags   -fno-strict-overflow -fstack-protector-all
3677         add_ldflags  -Wl,-z,relro -Wl,-z,now
3678         add_cflags   -fPIE
3679         add_ldexeflags -fPIE -pie
3680     ;;
3681     ?*)
3682         die "Unknown toolchain $toolchain"
3683     ;;
3684 esac
3685
3686 test -n "$cross_prefix" && enable cross_compile
3687
3688 if enabled cross_compile; then
3689     test -n "$arch" && test -n "$target_os" ||
3690         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3691 fi
3692
3693 ar_default="${cross_prefix}${ar_default}"
3694 cc_default="${cross_prefix}${cc_default}"
3695 cxx_default="${cross_prefix}${cxx_default}"
3696 nm_default="${cross_prefix}${nm_default}"
3697 pkg_config_default="${cross_prefix}${pkg_config_default}"
3698 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3699     ranlib_default="${cross_prefix}${ranlib_default} -D"
3700 else
3701     ranlib_default="${cross_prefix}${ranlib_default}"
3702 fi
3703 strip_default="${cross_prefix}${strip_default}"
3704 windres_default="${cross_prefix}${windres_default}"
3705
3706 sysinclude_default="${sysroot}/usr/include"
3707
3708 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3709     target_exec target_os yasmexe
3710 enabled cross_compile || host_cc_default=$cc
3711 set_default host_cc
3712
3713 pkg_config_fail_message=""
3714 if ! $pkg_config --version >/dev/null 2>&1; then
3715     warn "$pkg_config not found, library detection may fail."
3716     pkg_config=false
3717 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3718     pkg_config_fail_message="
3719 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3720 fi
3721
3722 if test $doxygen != $doxygen_default && \
3723   ! $doxygen --version >/dev/null 2>&1; then
3724     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3725 fi
3726
3727 exesuf() {
3728     case $1 in
3729         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3730     esac
3731 }
3732
3733 EXESUF=$(exesuf $target_os)
3734 HOSTEXESUF=$(exesuf $host_os)
3735
3736 # set temporary file name
3737 : ${TMPDIR:=$TEMPDIR}
3738 : ${TMPDIR:=$TMP}
3739 : ${TMPDIR:=/tmp}
3740
3741 if [ -n "$tempprefix" ] ; then
3742     mktemp(){
3743         echo $tempprefix.${HOSTNAME}.${UID}
3744     }
3745 elif ! check_cmd mktemp -u XXXXXX; then
3746     # simple replacement for missing mktemp
3747     # NOT SAFE FOR GENERAL USE
3748     mktemp(){
3749         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3750     }
3751 fi
3752
3753 tmpfile(){
3754     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3755         (set -C; exec > $tmp) 2>/dev/null ||
3756         die "Unable to create temporary file in $TMPDIR."
3757     append TMPFILES $tmp
3758     eval $1=$tmp
3759 }
3760
3761 trap 'rm -f -- $TMPFILES' EXIT
3762
3763 tmpfile TMPASM .asm
3764 tmpfile TMPC   .c
3765 tmpfile TMPCPP .cpp
3766 tmpfile TMPE   $EXESUF
3767 tmpfile TMPH   .h
3768 tmpfile TMPM   .m
3769 tmpfile TMPO   .o
3770 tmpfile TMPS   .S
3771 tmpfile TMPSH  .sh
3772 tmpfile TMPV   .ver
3773
3774 unset -f mktemp
3775
3776 chmod +x $TMPE
3777
3778 # make sure we can execute files in $TMPDIR
3779 cat > $TMPSH 2>> $logfile <<EOF
3780 #! /bin/sh
3781 EOF
3782 chmod +x $TMPSH >> $logfile 2>&1
3783 if ! $TMPSH >> $logfile 2>&1; then
3784     cat <<EOF
3785 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3786 variable to another directory and make sure that it is not mounted noexec.
3787 EOF
3788     die "Sanity test failed."
3789 fi
3790
3791 armasm_flags(){
3792     for flag; do
3793         case $flag in
3794             # Filter out MSVC cl.exe options from cflags that shouldn't
3795             # be passed to gas-preprocessor
3796             -M[TD]*)                                            ;;
3797             *)                  echo $flag                      ;;
3798         esac
3799    done
3800 }
3801
3802 ccc_flags(){
3803     for flag; do
3804         case $flag in
3805             -std=c99)           echo -c99                       ;;
3806             -mcpu=*)            echo -arch ${flag#*=}           ;;
3807             -mieee)             echo -ieee                      ;;
3808             -O*|-fast)          echo $flag                      ;;
3809             -fno-math-errno)    echo -assume nomath_errno       ;;
3810             -g)                 echo -g3                        ;;
3811             -Wall)              echo -msg_enable level2         ;;
3812             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3813             -Wl,*)              echo $flag                      ;;
3814             -f*|-W*)                                            ;;
3815             *)                  echo $flag                      ;;
3816         esac
3817    done
3818 }
3819
3820 cparser_flags(){
3821     for flag; do
3822         case $flag in
3823             -Wno-switch)             echo -Wno-switch-enum ;;
3824             -Wno-format-zero-length) ;;
3825             -Wdisabled-optimization) ;;
3826             -Wno-pointer-sign)       echo -Wno-other ;;
3827             *)                       echo $flag ;;
3828         esac
3829     done
3830 }
3831
3832 msvc_common_flags(){
3833     for flag; do
3834         case $flag in
3835             # In addition to specifying certain flags under the compiler
3836             # specific filters, they must be specified here as well or else the
3837             # generic catch all at the bottom will print the original flag.
3838             -Wall)                ;;
3839             -std=c99)             ;;
3840             # Common flags
3841             -fomit-frame-pointer) ;;
3842             -g)                   echo -Z7 ;;
3843             -fno-math-errno)      ;;
3844             -fno-common)          ;;
3845             -fno-signed-zeros)    ;;
3846             -fPIC)                ;;
3847             -mthumb)              ;;
3848             -march=*)             ;;
3849             -lz)                  echo zlib.lib ;;
3850             -lavicap32)           echo vfw32.lib user32.lib ;;
3851             -lx264)               echo libx264.lib ;;
3852             -l*)                  echo ${flag#-l}.lib ;;
3853             -LARGEADDRESSAWARE)   echo $flag ;;
3854             -L*)                  echo -libpath:${flag#-L} ;;
3855             *)                    echo $flag ;;
3856         esac
3857     done
3858 }
3859
3860 msvc_flags(){
3861     msvc_common_flags "$@"
3862     for flag; do
3863         case $flag in
3864             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3865                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3866                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3867                                        -wd4307 \
3868                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3869         esac
3870     done
3871 }
3872
3873 icl_flags(){
3874     msvc_common_flags "$@"
3875     for flag; do
3876         case $flag in
3877             # Despite what Intel's documentation says -Wall, which is supported
3878             # on Windows, does enable remarks so disable them here.
3879             -Wall)                echo $flag -Qdiag-disable:remark ;;
3880             -std=c99)             echo -Qstd=c99 ;;
3881             -flto)                echo -ipo ;;
3882         esac
3883     done
3884 }
3885
3886 icc_flags(){
3887     for flag; do
3888         case $flag in
3889             -flto)                echo -ipo ;;
3890             *)                    echo $flag ;;
3891         esac
3892     done
3893 }
3894
3895 pgi_flags(){
3896     for flag; do
3897         case $flag in
3898             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3899             -fomit-frame-pointer) echo -Mnoframe ;;
3900             -g)                   echo -gopt ;;
3901             *)                    echo $flag ;;
3902         esac
3903     done
3904 }
3905
3906 suncc_flags(){
3907     for flag; do
3908         case $flag in
3909             -march=*|-mcpu=*)
3910                 case "${flag#*=}" in
3911                     native)                   echo -xtarget=native       ;;
3912                     v9|niagara)               echo -xarch=sparc          ;;
3913                     ultrasparc)               echo -xarch=sparcvis       ;;
3914                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3915                     i586|pentium)             echo -xchip=pentium        ;;
3916                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3917                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3918                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3919                     pentium4*)          echo -xtarget=pentium4           ;;
3920                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3921                     *-sse3)             echo -xarch=sse3                 ;;
3922                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3923                     bonnell)                   echo -xarch=ssse3         ;;
3924                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3925                     westmere)                  echo -xtarget=westmere    ;;
3926                     silvermont)                echo -xarch=sse4_2        ;;
3927                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3928                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3929                                                echo -xarch=avx           ;;
3930                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3931                     btver1)                    echo -xarch=amdsse4a      ;;
3932                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3933                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3934                     k8|opteron|athlon64|athlon-fx)
3935                                                echo -xarch=sse2a         ;;
3936                     athlon*)                   echo -xarch=pentium_proa  ;;
3937                 esac
3938                 ;;
3939             -std=c99)             echo -xc99              ;;
3940             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3941             -fPIC)                echo -KPIC -xcode=pic32 ;;
3942             -W*,*)                echo $flag              ;;
3943             -f*-*|-W*|-mimpure-text)                      ;;
3944             -shared)              echo -G                 ;;
3945             *)                    echo $flag              ;;
3946         esac
3947     done
3948 }
3949
3950 tms470_flags(){
3951     for flag; do
3952         case $flag in
3953             -march=*|-mcpu=*)
3954                 case "${flag#*=}" in
3955                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3956                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3957                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3958                     armv6*|arm11*)          echo -mv=6   ;;
3959                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3960                                             echo -mv=5e  ;;
3961                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3962                 esac
3963                 ;;
3964             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3965             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3966             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3967             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3968             -msoft-float)   echo --float_support=vfplib       ;;
3969             -O[0-3]|-mf=*)  echo $flag                        ;;
3970             -g)             echo -g -mn                       ;;
3971             -pds=*)         echo $flag                        ;;
3972             -D*|-I*)        echo $flag                        ;;
3973             --gcc|--abi=*)  echo $flag                        ;;
3974             -me)            echo $flag                        ;;
3975         esac
3976     done
3977 }
3978
3979 probe_cc(){
3980     pfx=$1
3981     _cc=$2
3982     first=$3
3983
3984     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3985     unset _ld_o _ldflags _ld_lib _ld_path
3986     unset _depflags _DEPCMD _DEPFLAGS
3987     _flags_filter=echo
3988
3989     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3990         true # no-op to avoid reading stdin in following checks
3991     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3992         _type=llvm_gcc
3993         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3994         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3995         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3996         _cflags_speed='-O3'
3997         _cflags_size='-Os'
3998     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3999         _type=gcc
4000         gcc_version=$($_cc --version | head -n1)
4001         gcc_basever=$($_cc -dumpversion)
4002         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4003         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4004         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4005         case $gcc_basever in
4006             2) ;;
4007             2.*) ;;
4008             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4009         esac
4010         if [ "$first" = true ]; then
4011             case $gcc_basever in
4012                 4.2*)
4013                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4014             esac
4015         fi
4016         _cflags_speed='-O3'
4017         _cflags_size='-Os'
4018     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4019         _type=icc
4020         _ident=$($_cc --version | head -n1)
4021         _depflags='-MMD'
4022         _cflags_speed='-O3'
4023         _cflags_size='-Os'
4024         _cflags_noopt='-O1'
4025         _flags_filter=icc_flags
4026     elif $_cc -v 2>&1 | grep -q xlc; then
4027         _type=xlc
4028         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4029         _cflags_speed='-O5'
4030         _cflags_size='-O5 -qcompact'
4031     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4032         _type=ccc
4033         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4034         _DEPFLAGS='-M'
4035         _cflags_speed='-fast'
4036         _cflags_size='-O1'
4037         _flags_filter=ccc_flags
4038     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4039         test -d "$sysroot" || die "No valid sysroot specified."
4040         _type=armcc
4041         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4042         armcc_conf="$PWD/armcc.conf"
4043         $_cc --arm_linux_configure                 \
4044              --arm_linux_config_file="$armcc_conf" \
4045              --configure_sysroot="$sysroot"        \
4046              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4047              die "Error creating armcc configuration file."
4048         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4049         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4050         as_default="${cross_prefix}gcc"
4051         _depflags='-MMD'
4052         _cflags_speed='-O3'
4053         _cflags_size='-Os'
4054     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4055         _type=tms470
4056         _ident=$($_cc -version | head -n1 | tr -s ' ')
4057         _flags='--gcc --abi=eabi -me'
4058         _cc_e='-ppl -fe=$@'
4059         _cc_o='-fe=$@'
4060         _depflags='-ppa -ppd=$(@:.o=.d)'
4061         _cflags_speed='-O3 -mf=5'
4062         _cflags_size='-O3 -mf=2'
4063         _flags_filter=tms470_flags
4064     elif $_cc -v 2>&1 | grep -q clang; then
4065         _type=clang
4066         _ident=$($_cc --version 2>/dev/null | head -n1)
4067         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4068         _cflags_speed='-O3'
4069         _cflags_size='-Oz'
4070     elif $_cc -V 2>&1 | grep -q Sun; then
4071         _type=suncc
4072         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4073         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4074         _DEPFLAGS='-xM1 -xc99'
4075         _ldflags='-std=c99'
4076         _cflags_speed='-O5'
4077         _cflags_size='-O5 -xspace'
4078         _flags_filter=suncc_flags
4079     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4080         _type=pathscale
4081         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4082         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4083         _cflags_speed='-O2'
4084         _cflags_size='-Os'
4085         _flags_filter='filter_out -Wdisabled-optimization'
4086     elif $_cc -v 2>&1 | grep -q Open64; then
4087         _type=open64
4088         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4089         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4090         _cflags_speed='-O2'
4091         _cflags_size='-Os'
4092         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4093     elif $_cc -V 2>&1 | grep -q Portland; then
4094         _type=pgi
4095         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4096         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4097         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4098         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4099         _cflags_noopt="-O"
4100         _flags_filter=pgi_flags
4101     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4102         _type=armasm
4103         _ident=$($_cc | head -n1)
4104         # 4509: "This form of conditional instruction is deprecated"
4105         _flags="-nologo -ignore 4509"
4106         _flags_filter=armasm_flags
4107     elif $_cc 2>&1 | grep -q Intel; then
4108         _type=icl
4109         _ident=$($_cc 2>&1 | head -n1)
4110         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4111         # Not only is O3 broken on 13.x+ but it is slower on all previous
4112         # versions (tested) as well.
4113         _cflags_speed="-O2"
4114         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4115         if $_cc 2>&1 | grep -q Linker; then
4116             _ld_o='-out:$@'
4117         else
4118             _ld_o='-Fe$@'
4119         fi
4120         _cc_o='-Fo$@'
4121         _cc_e='-P'
4122         _flags_filter=icl_flags
4123         _ld_lib='lib%.a'
4124         _ld_path='-libpath:'
4125         # -Qdiag-error to make icl error when seeing certain unknown arguments
4126         _flags='-nologo -Qdiag-error:4044,10157'
4127         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4128         # with MSVC which enables it by default.
4129         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4130         disable stripping
4131     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4132         # lld can emulate multiple different linkers; in ms link.exe mode,
4133         # the -? parameter gives the help output which contains an identifyable
4134         # string, while it gives an error in other modes.
4135         _type=lld-link
4136         # The link.exe mode doesn't have a switch for getting the version,
4137         # but we can force it back to gnu mode and get the version from there.
4138         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4139         _ld_o='-out:$@'
4140         _flags_filter=msvc_flags
4141         _ld_lib='lib%.a'
4142         _ld_path='-libpath:'
4143     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4144         _type=msvc
4145         _ident=$($_cc 2>&1 | head -n1)
4146         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4147         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4148         _cflags_speed="-O2"
4149         _cflags_size="-O1"
4150         if $_cc -nologo- 2>&1 | grep -q Linker; then
4151             _ld_o='-out:$@'
4152         else
4153             _ld_o='-Fe$@'
4154         fi
4155         _cc_o='-Fo$@'
4156         _cc_e='-P -Fi$@'
4157         _flags_filter=msvc_flags
4158         _ld_lib='lib%.a'
4159         _ld_path='-libpath:'
4160         _flags='-nologo'
4161         disable stripping
4162     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4163         _type=cparser
4164         _ident=$($_cc --version | head -n1)
4165         _depflags='-MMD'
4166         _cflags_speed='-O4'
4167         _cflags_size='-O2'
4168         _flags_filter=cparser_flags
4169     fi
4170
4171     eval ${pfx}_type=\$_type
4172     eval ${pfx}_ident=\$_ident
4173 }
4174
4175 set_ccvars(){
4176     eval ${1}_C=\${_cc_c-\${${1}_C}}
4177     eval ${1}_E=\${_cc_e-\${${1}_E}}
4178     eval ${1}_O=\${_cc_o-\${${1}_O}}
4179
4180     if [ -n "$_depflags" ]; then
4181         eval ${1}_DEPFLAGS=\$_depflags
4182     else
4183         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4184         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4185         eval DEP${1}FLAGS=\$_flags
4186     fi
4187 }
4188
4189 probe_cc cc "$cc" "true"
4190 cflags_filter=$_flags_filter
4191 cflags_speed=$_cflags_speed
4192 cflags_size=$_cflags_size
4193 cflags_noopt=$_cflags_noopt
4194 add_cflags $_flags $_cflags
4195 cc_ldflags=$_ldflags
4196 set_ccvars CC
4197
4198 probe_cc hostcc "$host_cc"
4199 host_cflags_filter=$_flags_filter
4200 add_host_cflags  $_flags $_cflags
4201 set_ccvars HOSTCC
4202
4203 test -n "$cc_type" && enable $cc_type ||
4204     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4205
4206 : ${as_default:=$cc}
4207 : ${objcc_default:=$cc}
4208 : ${dep_cc_default:=$cc}
4209 : ${ld_default:=$cc}
4210 : ${host_ld_default:=$host_cc}
4211 set_default ar as objcc dep_cc ld ln_s host_ld windres
4212
4213 probe_cc as "$as"
4214 asflags_filter=$_flags_filter
4215 add_asflags $_flags $_cflags
4216 set_ccvars AS
4217
4218 probe_cc objcc "$objcc"
4219 objcflags_filter=$_flags_filter
4220 add_objcflags $_flags $_cflags
4221 set_ccvars OBJC
4222
4223 probe_cc ld "$ld"
4224 ldflags_filter=$_flags_filter
4225 add_ldflags $_flags $_ldflags
4226 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4227 LD_O=${_ld_o-$LD_O}
4228 LD_LIB=${_ld_lib-$LD_LIB}
4229 LD_PATH=${_ld_path-$LD_PATH}
4230
4231 probe_cc hostld "$host_ld"
4232 host_ldflags_filter=$_flags_filter
4233 add_host_ldflags $_flags $_ldflags
4234 HOSTLD_O=${_ld_o-$HOSTLD_O}
4235
4236 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4237     probe_cc depcc "$dep_cc"
4238     CCDEP=${_DEPCMD:-$DEPCMD}
4239     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4240     DEPCCFLAGS=$_flags
4241 fi
4242
4243 if $ar 2>&1 | grep -q Microsoft; then
4244     arflags="-nologo"
4245     ar_o='-out:$@'
4246 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4247     arflags="rq"
4248     ar_o='$@'
4249 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4250     arflags='-Xany -r -c'
4251     ar_o='$@'
4252 elif $ar 2>&1 | grep -q "\[D\] "; then
4253     arflags="rcD"
4254     ar_o='$@'
4255 else
4256     arflags="rc"
4257     ar_o='$@'
4258 fi
4259
4260 add_cflags $extra_cflags
4261 add_cxxflags $extra_cxxflags
4262 add_objcflags $extra_objcflags
4263 add_asflags $extra_cflags
4264
4265 if test -n "$sysroot"; then
4266     case "$cc_type" in
4267         gcc|llvm_gcc|clang)
4268             add_cppflags --sysroot="$sysroot"
4269             add_ldflags --sysroot="$sysroot"
4270 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4271             add_cppflags -isysroot "$sysroot"
4272             add_ldflags -isysroot "$sysroot"
4273         ;;
4274         tms470)
4275             add_cppflags -I"$sysinclude"
4276             add_ldflags  --sysroot="$sysroot"
4277         ;;
4278     esac
4279 fi
4280
4281 if test "$cpu" = host; then
4282     enabled cross_compile &&
4283         die "--cpu=host makes no sense when cross-compiling."
4284
4285     case "$cc_type" in
4286         gcc|llvm_gcc)
4287             check_native(){
4288                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4289                 sed -n "/cc1.*$1=/{
4290                             s/.*$1=\\([^ ]*\\).*/\\1/
4291                             p
4292                             q
4293                         }" $TMPE
4294             }
4295             cpu=$(check_native -march || check_native -mcpu)
4296         ;;
4297         clang)
4298             check_native(){
4299                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4300                 sed -n "/cc1.*-target-cpu /{
4301                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4302                             p
4303                             q
4304                         }" $TMPE
4305             }
4306             cpu=$(check_native -march)
4307         ;;
4308     esac
4309
4310     test "${cpu:-host}" = host &&
4311         die "--cpu=host not supported with compiler $cc"
4312 fi
4313
4314 # Deal with common $arch aliases
4315 case "$arch" in
4316     aarch64|arm64)
4317         arch="aarch64"
4318     ;;
4319     arm*|iPad*|iPhone*)
4320         arch="arm"
4321     ;;
4322     mips*|IP*)
4323         case "$arch" in
4324         *el)
4325             add_cppflags -EL
4326             add_ldflags -EL
4327         ;;
4328         *eb)
4329             add_cppflags -EB
4330             add_ldflags -EB
4331         ;;
4332         esac
4333         arch="mips"
4334     ;;
4335     parisc*|hppa*)
4336         arch="parisc"
4337     ;;
4338     "Power Macintosh"|ppc*|powerpc*)
4339         arch="ppc"
4340     ;;
4341     s390|s390x)
4342         arch="s390"
4343     ;;
4344     sh4|sh)
4345         arch="sh4"
4346     ;;
4347     sun4*|sparc*)
4348         arch="sparc"
4349     ;;
4350     tilegx|tile-gx)
4351         arch="tilegx"
4352     ;;
4353     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4354         arch="x86"
4355     ;;
4356 esac
4357
4358 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4359 enable $arch
4360
4361 # Add processor-specific flags
4362 if enabled aarch64; then
4363
4364     case $cpu in
4365         armv*)
4366             cpuflags="-march=$cpu"
4367         ;;
4368         *)
4369             cpuflags="-mcpu=$cpu"
4370         ;;
4371     esac
4372
4373 elif enabled alpha; then
4374
4375     cpuflags="-mcpu=$cpu"
4376
4377 elif enabled arm; then
4378
4379     check_arm_arch() {
4380         check_cpp_condition stddef.h \
4381             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4382             $cpuflags
4383     }
4384
4385     probe_arm_arch() {
4386         if   check_arm_arch 4;        then echo armv4
4387         elif check_arm_arch 4T;       then echo armv4t
4388         elif check_arm_arch 5;        then echo armv5
4389         elif check_arm_arch 5E;       then echo armv5e
4390         elif check_arm_arch 5T;       then echo armv5t
4391         elif check_arm_arch 5TE;      then echo armv5te
4392         elif check_arm_arch 5TEJ;     then echo armv5te
4393         elif check_arm_arch 6;        then echo armv6
4394         elif check_arm_arch 6J;       then echo armv6j
4395         elif check_arm_arch 6K;       then echo armv6k
4396         elif check_arm_arch 6Z;       then echo armv6z
4397         elif check_arm_arch 6ZK;      then echo armv6zk
4398         elif check_arm_arch 6T2;      then echo armv6t2
4399         elif check_arm_arch 7;        then echo armv7
4400         elif check_arm_arch 7A  7_A;  then echo armv7-a
4401         elif check_arm_arch 7S;       then echo armv7-a
4402         elif check_arm_arch 7R  7_R;  then echo armv7-r
4403         elif check_arm_arch 7M  7_M;  then echo armv7-m
4404         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4405         elif check_arm_arch 8A  8_A;  then echo armv8-a
4406         fi
4407     }
4408
4409     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4410
4411     case $cpu in
4412         armv*)
4413             cpuflags="-march=$cpu"
4414             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4415         ;;
4416         *)
4417             cpuflags="-mcpu=$cpu"
4418             case $cpu in
4419                 cortex-a*)                               subarch=armv7a  ;;
4420                 cortex-r*)                               subarch=armv7r  ;;
4421                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4422                 arm11*)                                  subarch=armv6   ;;
4423                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4424                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4425                 *)                             subarch=$(probe_arm_arch) ;;
4426             esac
4427         ;;
4428     esac
4429
4430     case "$subarch" in
4431         armv5t*)    enable fast_clz                ;;
4432         armv[6-8]*)
4433             enable fast_clz
4434             disabled fast_unaligned || enable fast_unaligned
4435             ;;
4436     esac
4437
4438 elif enabled avr32; then
4439
4440     case $cpu in
4441         ap7[02]0[0-2])
4442             subarch="avr32_ap"
4443             cpuflags="-mpart=$cpu"
4444         ;;
4445         ap)
4446             subarch="avr32_ap"
4447             cpuflags="-march=$cpu"
4448         ;;
4449         uc3[ab]*)
4450             subarch="avr32_uc"
4451             cpuflags="-mcpu=$cpu"
4452         ;;
4453         uc)
4454             subarch="avr32_uc"
4455             cpuflags="-march=$cpu"
4456         ;;
4457     esac
4458
4459 elif enabled bfin; then
4460
4461     cpuflags="-mcpu=$cpu"
4462
4463 elif enabled mips; then
4464
4465     cpuflags="-march=$cpu"
4466
4467     if [ "$cpu" != "generic" ]; then
4468         disable mips32r2
4469         disable mips32r5
4470         disable mips64r2
4471         disable mips32r6
4472         disable mips64r6
4473         disable loongson2
4474         disable loongson3
4475
4476         case $cpu in
4477             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4478                 enable mips32r2
4479                 disable msa
4480             ;;
4481             p5600|i6400|p6600)
4482                 disable mipsdsp
4483                 disable mipsdspr2
4484             ;;
4485             loongson*)
4486                 enable loongson2
4487                 enable loongson3
4488                 enable local_aligned_8 local_aligned_16 local_aligned_32
4489                 enable simd_align_16
4490                 enable fast_64bit
4491                 enable fast_clz
4492                 enable fast_cmov
4493                 enable fast_unaligned
4494                 disable aligned_stack
4495                 disable mipsfpu
4496                 disable mipsdsp
4497                 disable mipsdspr2
4498                 case $cpu in
4499                     loongson3*)
4500                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4501                     ;;
4502                     loongson2e)
4503                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4504                     ;;
4505                     loongson2f)
4506                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4507                     ;;
4508                 esac
4509             ;;
4510             *)
4511                 # Unknown CPU. Disable everything.
4512                 warn "unknown CPU. Disabling all MIPS optimizations."
4513                 disable mipsfpu
4514                 disable mipsdsp
4515                 disable mipsdspr2
4516                 disable msa
4517                 disable mmi
4518             ;;
4519         esac
4520
4521         case $cpu in
4522             24kc)
4523                 disable mipsfpu
4524                 disable mipsdsp
4525                 disable mipsdspr2
4526             ;;
4527             24kf*)
4528                 disable mipsdsp
4529                 disable mipsdspr2
4530             ;;
4531             24kec|34kc|1004kc)
4532                 disable mipsfpu
4533                 disable mipsdspr2
4534             ;;
4535             24kef*|34kf*|1004kf*)
4536                 disable mipsdspr2
4537             ;;
4538             74kc)
4539                 disable mipsfpu
4540             ;;
4541             p5600)
4542                 enable mips32r5
4543                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4544             ;;
4545             i6400)
4546                 enable mips64r6
4547                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4548             ;;
4549             p6600)
4550                 enable mips64r6
4551                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4552             ;;
4553         esac
4554     else
4555         # We do not disable anything. Is up to the user to disable the unwanted features.
4556         warn 'generic cpu selected'
4557     fi
4558
4559 elif enabled ppc; then
4560
4561     disable ldbrx
4562
4563     case $(tolower $cpu) in
4564         601|ppc601|powerpc601)
4565             cpuflags="-mcpu=601"
4566             disable altivec
4567         ;;
4568         603*|ppc603*|powerpc603*)
4569             cpuflags="-mcpu=603"
4570             disable altivec
4571         ;;
4572         604*|ppc604*|powerpc604*)
4573             cpuflags="-mcpu=604"
4574             disable altivec
4575         ;;
4576         g3|75*|ppc75*|powerpc75*)
4577             cpuflags="-mcpu=750"
4578             disable altivec
4579         ;;
4580         g4|745*|ppc745*|powerpc745*)
4581             cpuflags="-mcpu=7450"
4582             disable vsx
4583         ;;
4584         74*|ppc74*|powerpc74*)
4585             cpuflags="-mcpu=7400"
4586             disable vsx
4587         ;;
4588         g5|970|ppc970|powerpc970)
4589             cpuflags="-mcpu=970"
4590             disable vsx
4591         ;;
4592         power[3-6]*)
4593             cpuflags="-mcpu=$cpu"
4594             disable vsx
4595         ;;
4596         power[7-8]*)
4597             cpuflags="-mcpu=$cpu"
4598         ;;
4599         cell)
4600             cpuflags="-mcpu=cell"
4601             enable ldbrx
4602             disable vsx
4603         ;;
4604         e500mc)
4605             cpuflags="-mcpu=e500mc"
4606             disable altivec
4607         ;;
4608         e500v2)
4609             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4610             disable altivec
4611             disable dcbzl
4612         ;;
4613         e500)
4614             cpuflags="-mcpu=8540 -mhard-float"
4615             disable altivec
4616             disable dcbzl
4617         ;;
4618     esac
4619
4620 elif enabled sparc; then
4621
4622     case $cpu in
4623         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4624             cpuflags="-mcpu=$cpu"
4625         ;;
4626         ultrasparc*|niagara[234])
4627             cpuflags="-mcpu=$cpu"
4628         ;;
4629     esac
4630
4631 elif enabled x86; then
4632
4633     case $cpu in
4634         i[345]86|pentium)
4635             cpuflags="-march=$cpu"
4636             disable i686
4637             disable mmx
4638         ;;
4639         # targets that do NOT support nopl and conditional mov (cmov)
4640         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4641             cpuflags="-march=$cpu"
4642             disable i686
4643         ;;
4644         # targets that do support nopl and conditional mov (cmov)
4645         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4646         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4647         |amdfam10|barcelona|b[dt]ver*|znver*)
4648             cpuflags="-march=$cpu"
4649             enable i686
4650             enable fast_cmov
4651         ;;
4652         # targets that do support conditional mov but on which it's slow
4653         pentium4|pentium4m|prescott|nocona)
4654             cpuflags="-march=$cpu"
4655             enable i686
4656             disable fast_cmov
4657         ;;
4658     esac
4659
4660 fi
4661
4662 if [ "$cpu" != generic ]; then
4663     add_cflags  $cpuflags
4664     add_asflags $cpuflags
4665     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4666 fi
4667
4668 # compiler sanity check
4669 check_exec <<EOF
4670 int main(void){ return 0; }
4671 EOF
4672 if test "$?" != 0; then
4673     echo "$cc is unable to create an executable file."
4674     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4675         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4676         echo "Only do this if you know what cross compiling means."
4677     fi
4678     die "C compiler test failed."
4679 fi
4680
4681 add_cppflags -D_ISOC99_SOURCE
4682 add_cxxflags -D__STDC_CONSTANT_MACROS
4683 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4684
4685 # some compilers silently accept -std=c11, so we also need to check that the
4686 # version macro is defined properly
4687 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4688     add_cflags -std=c11
4689 else
4690     check_cflags -std=c99
4691 fi
4692
4693 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4694 #include <stdlib.h>
4695 EOF
4696 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4697 #include <stdlib.h>
4698 EOF
4699
4700 add_host_cppflags -D_ISOC99_SOURCE
4701 check_host_cflags -std=c99
4702 check_host_cflags -Wall
4703 check_host_cflags -O3
4704
4705 check_64bit(){
4706     arch32=$1
4707     arch64=$2
4708     expr=$3
4709     check_code cc "" "int test[2*($expr) - 1]" &&
4710         subarch=$arch64 || subarch=$arch32
4711 }
4712
4713 case "$arch" in
4714     aarch64|alpha|ia64)
4715         spic=$shared
4716     ;;
4717     mips)
4718         check_64bit mips mips64 '_MIPS_SIM > 1'
4719         spic=$shared
4720     ;;
4721     parisc)
4722         check_64bit parisc parisc64 'sizeof(void *) > 4'
4723         spic=$shared
4724     ;;
4725     ppc)
4726         check_64bit ppc ppc64 'sizeof(void *) > 4'
4727         spic=$shared
4728     ;;
4729     s390)
4730         check_64bit s390 s390x 'sizeof(void *) > 4'
4731         spic=$shared
4732     ;;
4733     sparc)
4734         check_64bit sparc sparc64 'sizeof(void *) > 4'
4735         spic=$shared
4736     ;;
4737     x86)
4738         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4739         # Treat x32 as x64 for now. Note it also needs spic=$shared
4740         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4741             subarch=x86_64
4742         if test "$subarch" = "x86_64"; then
4743             spic=$shared
4744         fi
4745     ;;
4746     ppc)
4747         check_cc <<EOF && subarch="ppc64"
4748         int test[(int)sizeof(char*) - 7];
4749 EOF
4750     ;;
4751 esac
4752
4753 enable $subarch
4754 enabled spic && enable_weak pic
4755
4756 # OS specific
4757 case $target_os in
4758     aix)
4759         SHFLAGS=-shared
4760         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4761         enabled shared && add_ldflags -Wl,-brtl
4762         ;;
4763     android)
4764         disable symver
4765         enable section_data_rel_ro
4766         SLIB_INSTALL_NAME='$(SLIBNAME)'
4767         SLIB_INSTALL_LINKS=
4768         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4769         ;;
4770     haiku)
4771         prefix_default="/boot/common"
4772         network_extralibs="-lnetwork"
4773         host_libs=
4774         ;;
4775     sunos)
4776         SHFLAGS='-shared -Wl,-h,$$(@F)'
4777         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4778         network_extralibs="-lsocket -lnsl"
4779         add_cppflags -D__EXTENSIONS__
4780         # When using suncc to build, the Solaris linker will mark
4781         # an executable with each instruction set encountered by
4782         # the Solaris assembler.  As our libraries contain their own
4783         # guards for processor-specific code, instead suppress
4784         # generation of the HWCAPS ELF section on Solaris x86 only.
4785         enabled_all suncc x86 &&
4786             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4787             add_ldflags -Wl,-M,mapfile
4788         nm_default='nm -P -g'
4789         version_script='-M'
4790         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4791         ;;
4792     netbsd)
4793         disable symver
4794         oss_indev_extralibs="-lossaudio"
4795         oss_outdev_extralibs="-lossaudio"
4796         enabled gcc || check_ldflags -Wl,-zmuldefs
4797         ;;
4798     openbsd|bitrig)
4799         disable symver
4800         SHFLAGS='-shared'
4801         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4802         SLIB_INSTALL_LINKS=
4803         oss_indev_extralibs="-lossaudio"
4804         oss_outdev_extralibs="-lossaudio"
4805         ;;
4806     dragonfly)
4807         disable symver
4808         ;;
4809     freebsd)
4810         ;;
4811     bsd/os)
4812         add_extralibs -lpoll -lgnugetopt
4813         strip="strip -d"
4814         ;;
4815     darwin)
4816         enabled ppc && add_asflags -force_cpusubtype_ALL
4817         install_name_dir_default='$(SHLIBDIR)'
4818         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4819         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4820         strip="${strip} -x"
4821         add_ldflags -Wl,-dynamic,-search_paths_first
4822         SLIBSUF=".dylib"
4823         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4824         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4825         objformat="macho"
4826         enabled x86_64 && objformat="macho64"
4827         enabled_any pic shared x86_64 ||
4828             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4829         check_header dispatch/dispatch.h &&
4830             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4831         version_script='-exported_symbols_list'
4832         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4833         ;;
4834     msys*)
4835         die "Native MSYS builds are discouraged, please use the MINGW environment."
4836         ;;
4837     mingw32*|mingw64*)
4838         if test $target_os = "mingw32ce"; then
4839             disable network
4840         else
4841             target_os=mingw32
4842         fi
4843         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4844         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4845         LIBTARGET=i386
4846         if enabled x86_64; then
4847             LIBTARGET="i386:x86-64"
4848         elif enabled arm; then
4849             LIBTARGET=arm-wince
4850         fi
4851         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4852         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4853         shlibdir_default="$bindir_default"
4854         SLIBPREF=""
4855         SLIBSUF=".dll"
4856         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4857         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4858         dlltool="${cross_prefix}dlltool"
4859         if check_cmd lib.exe -list; then
4860             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4861             if enabled x86_64; then
4862                 LIBTARGET=x64
4863             fi
4864         elif check_cmd $dlltool --version; then
4865             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4866         fi
4867         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4868         SLIB_INSTALL_LINKS=
4869         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4870         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4871         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4872         objformat="win32"
4873         ranlib=:
4874         enable dos_paths
4875         check_ldflags -Wl,--nxcompat,--dynamicbase
4876         # Lets work around some stupidity in binutils.
4877         # ld will strip relocations from executables even though we need them
4878         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4879         # however ld then forgets what the entry point should be (oops) so we
4880         # have to manually (re)set it.
4881         if enabled x86_32; then
4882             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4883         elif enabled x86_64; then
4884             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4885             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4886             # Set image base >4GB for extra entropy with HEASLR
4887             add_ldexeflags -Wl,--image-base,0x140000000
4888             append SHFLAGS -Wl,--image-base,0x180000000
4889         fi
4890         ;;
4891     win32|win64)
4892         disable symver
4893         if enabled shared; then
4894             # Link to the import library instead of the normal static library
4895             # for shared libs.
4896             LD_LIB='%.lib'
4897             # Cannot build both shared and static libs with MSVC or icl.
4898             disable static
4899         fi
4900         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4901         shlibdir_default="$bindir_default"
4902         SLIBPREF=""
4903         SLIBSUF=".dll"
4904         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4905         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4906         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4907         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4908         SLIB_INSTALL_LINKS=
4909         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4910         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4911         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4912         objformat="win32"
4913         ranlib=:
4914         enable dos_paths
4915         ;;
4916     cygwin*)
4917         target_os=cygwin
4918         shlibdir_default="$bindir_default"
4919         SLIBPREF="cyg"
4920         SLIBSUF=".dll"
4921         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4922         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4923         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4924         SLIB_INSTALL_LINKS=
4925         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4926         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4927         objformat="win32"
4928         enable dos_paths
4929         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4930         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4931         ;;
4932     *-dos|freedos|opendos)
4933         network_extralibs="-lsocket"
4934         objformat="coff"
4935         enable dos_paths
4936         add_cppflags -U__STRICT_ANSI__
4937         ;;
4938     linux)
4939         enable dv1394
4940         enable section_data_rel_ro
4941         ;;
4942     irix*)
4943         target_os=irix
4944         ranlib="echo ignoring ranlib"
4945         ;;
4946     os/2*)
4947         strip="lxlite -CS"
4948         objformat="aout"
4949         add_cppflags -D_GNU_SOURCE
4950         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4951         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4952         LIBSUF="_s.a"
4953         SLIBPREF=""
4954         SLIBSUF=".dll"
4955         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4956         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4957         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4958             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4959             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4960             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4961             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4962         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4963             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4964         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4965         SLIB_INSTALL_LINKS=
4966         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4967         enable dos_paths
4968         enable_weak os2threads
4969         ;;
4970     gnu/kfreebsd)
4971         add_cppflags -D_BSD_SOURCE
4972         ;;
4973     gnu)
4974         ;;
4975     qnx)
4976         add_cppflags -D_QNX_SOURCE
4977         network_extralibs="-lsocket"
4978         ;;
4979     symbian)
4980         SLIBSUF=".dll"
4981         enable dos_paths
4982         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4983         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4984         add_ldflags -Wl,--target1-abs,--no-undefined \
4985                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4986                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4987         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4988                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4989                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4990         ;;
4991     osf1)
4992         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4993         ;;
4994     minix)
4995         ;;
4996     none)
4997         ;;
4998     *)
4999         die "Unknown OS '$target_os'."
5000         ;;
5001 esac
5002
5003 # test if creating links works
5004 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5005 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5006 mkdir "$link_dest"
5007 $ln_s "$link_dest" "$link_name"
5008 touch "$link_dest/test_file"
5009 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5010     # create link to source path
5011     [ -e src ] && rm src
5012     $ln_s "$source_path" src
5013     source_link=src
5014 else
5015     # creating directory links doesn't work
5016     # fall back to using the full source path
5017     source_link="$source_path"
5018 fi
5019 # cleanup
5020 rm -r "$link_dest"
5021 rm -r "$link_name"
5022
5023 # determine libc flavour
5024
5025 probe_libc(){
5026     pfx=$1
5027     pfx_no_=${pfx%_}
5028     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5029     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5030         eval ${pfx}libc_type=uclibc
5031         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5032     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5033         eval ${pfx}libc_type=glibc
5034         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5035     # MinGW headers can be installed on Cygwin, so check for newlib first.
5036     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5037         eval ${pfx}libc_type=newlib
5038         add_${pfx}cppflags -U__STRICT_ANSI__
5039     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5040     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5041         eval ${pfx}libc_type=mingw64
5042         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5043             add_compat msvcrt/snprintf.o
5044             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5045         fi
5046         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5047         eval test \$${pfx_no_}cc_type = "gcc" &&
5048             add_${pfx}cppflags -D__printf__=__gnu_printf__
5049     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5050          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5051         eval ${pfx}libc_type=mingw32
5052         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5053             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5054             die "ERROR: MinGW32 runtime version must be >= 3.15."
5055         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5056         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5057             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5058         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5059             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5060         eval test \$${pfx_no_}cc_type = "gcc" &&
5061             add_${pfx}cppflags -D__printf__=__gnu_printf__
5062     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5063         eval ${pfx}libc_type=msvcrt
5064         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5065             if [ "$pfx" = host_ ]; then
5066                 add_host_cppflags -Dsnprintf=_snprintf
5067             else
5068                 add_compat strtod.o strtod=avpriv_strtod
5069                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5070                                              _snprintf=avpriv_snprintf  \
5071                                              vsnprintf=avpriv_vsnprintf
5072             fi
5073         fi
5074         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5075         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5076         # 0x601 by default unless something else is set by the user.
5077         # This can easily lead to us detecting functions only present
5078         # in such new versions and producing binaries requiring windows 7.0.
5079         # Therefore explicitly set the default to XP unless the user has
5080         # set something else on the command line.
5081         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5082         # family. For these cases, configure is free to use any functions
5083         # found in the SDK headers by default. (Alternatively, we could force
5084         # _WIN32_WINNT to 0x0602 in that case.)
5085         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5086             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5087 #ifdef WINAPI_FAMILY
5088 #include <winapifamily.h>
5089 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5090 #error not desktop
5091 #endif
5092 #endif
5093 EOF
5094         if [ "$pfx" = "" ]; then
5095             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5096             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5097         fi
5098     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5099         eval ${pfx}libc_type=klibc
5100     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5101         eval ${pfx}libc_type=bionic
5102     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5103         eval ${pfx}libc_type=solaris
5104         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5105     fi
5106     check_${pfx}cc <<EOF
5107 #include <time.h>
5108 void *v = localtime_r;
5109 EOF
5110 test "$?" != 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
5111 #include <time.h>
5112 void *v = localtime_r;
5113 EOF
5114
5115 }
5116
5117 probe_libc
5118 test -n "$libc_type" && enable libc_$libc_type
5119 probe_libc host_
5120 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5121
5122 case $libc_type in
5123     bionic)
5124         add_compat strtod.o strtod=avpriv_strtod
5125         ;;
5126 esac
5127
5128 # hacks for compiler/libc/os combinations
5129
5130 if enabled_all tms470 libc_glibc; then
5131     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5132     add_cppflags -D__USER_LABEL_PREFIX__=
5133     add_cppflags -D__builtin_memset=memset
5134     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5135     add_cflags   -pds=48    # incompatible redefinition of macro
5136 fi
5137
5138 if enabled_all ccc libc_glibc; then
5139     add_ldflags -Wl,-z,now  # calls to libots crash without this
5140 fi
5141
5142 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5143     add_cppflags '-I\$(SRC_PATH)/compat/float'
5144
5145 esc(){
5146     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5147 }
5148
5149 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5150
5151 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5152
5153 set_default libdir
5154 : ${shlibdir_default:="$libdir"}
5155 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5156
5157 set_default $PATHS_LIST
5158 set_default nm
5159
5160 # we need to build at least one lib type
5161 if ! enabled_any static shared; then
5162     cat <<EOF
5163 At least one library type must be built.
5164 Specify --enable-static to build the static libraries or --enable-shared to
5165 build the shared libraries as well. To only build the shared libraries specify
5166 --disable-static in addition to --enable-shared.
5167 EOF
5168     exit 1
5169 fi
5170
5171 disabled optimizations || check_cflags -fomit-frame-pointer
5172
5173 enable_weak_pic() {
5174     disabled pic && return
5175     enable pic
5176     add_cppflags -DPIC
5177     case "$target_os" in
5178     mingw*|cygwin*)
5179         ;;
5180     *)
5181         add_cflags -fPIC
5182         ;;
5183     esac
5184     add_asflags  -fPIC
5185 }
5186
5187 enabled pic && enable_weak_pic
5188
5189 check_cc <<EOF || die "Symbol mangling check failed."
5190 int ff_extern;
5191 EOF
5192 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5193 extern_prefix=${sym%%ff_extern*}
5194
5195 check_cc <<EOF && enable_weak inline_asm
5196 void foo(void) { __asm__ volatile ("" ::); }
5197 EOF
5198
5199 _restrict=
5200 for restrict_keyword in restrict __restrict__ __restrict; do
5201     check_cc <<EOF && _restrict=$restrict_keyword && break
5202 void foo(char * $restrict_keyword p);
5203 EOF
5204 done
5205
5206 check_cc <<EOF && enable pragma_deprecated
5207 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5208 EOF
5209
5210 check_cc <<EOF && enable attribute_packed
5211 struct { int x; } __attribute__((packed)) x;
5212 EOF
5213
5214 check_cc <<EOF && enable attribute_may_alias
5215 union { int x; } __attribute__((may_alias)) x;
5216 EOF
5217
5218 check_cc <<EOF || die "endian test failed"
5219 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5220 EOF
5221 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5222
5223 if ! enabled ppc64 || enabled bigendian; then
5224     disable vsx
5225 fi
5226
5227 check_gas() {
5228     log "check_gas using '$as' as AS"
5229     # :vararg is used on aarch64, arm and ppc altivec
5230     check_as <<EOF || return 1
5231 .macro m n, y:vararg=0
5232 \n: .int \y
5233 .endm
5234 m x
5235 EOF
5236     # .altmacro is only used in arm asm
5237     ! enabled arm || check_as <<EOF || return 1
5238 .altmacro
5239 EOF
5240     enable gnu_as
5241     return 0
5242 }
5243
5244 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5245     nogas=:
5246     enabled_any arm aarch64 && nogas=die
5247     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5248     as_noop=-v
5249
5250     case $as_type in
5251         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5252         gcc)  gaspp_as_type=gas ;;
5253         *)    gaspp_as_type=$as_type ;;
5254     esac
5255
5256     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5257
5258     test "${as#*gas-preprocessor.pl}" != "$as" ||
5259     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5260         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5261
5262     if ! check_gas ; then
5263         as=${gas:=$as}
5264         check_gas || \
5265             $nogas "GNU assembler not found, install/update gas-preprocessor"
5266     fi
5267
5268     check_as <<EOF && enable as_func
5269 .func test
5270 .endfunc
5271 EOF
5272 fi
5273
5274 check_inline_asm inline_asm_labels '"1:\n"'
5275
5276 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5277
5278 if enabled aarch64; then
5279     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5280     # internal assembler in clang 3.3 does not support this instruction
5281     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5282     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5283
5284     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5285
5286 elif enabled alpha; then
5287
5288     check_cflags -mieee
5289
5290 elif enabled arm; then
5291
5292     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5293
5294     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5295 float func(float a, float b){ return a+b; }
5296 EOF
5297
5298     enabled thumb && check_cflags -mthumb || check_cflags -marm
5299
5300     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5301         enable vfp_args
5302     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5303         enable vfp_args
5304     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5305         case "${cross_prefix:-$cc}" in
5306             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5307             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5308 __asm__ (".eabi_attribute 28, 1");
5309 int main(void) { return 0; }
5310 EOF
5311         esac
5312         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5313     fi
5314
5315     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5316     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5317     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5318     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5319     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5320     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5321     enabled setend  && check_insn setend  'setend be'
5322
5323     [ $target_os = linux ] || [ $target_os = android ] ||
5324         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5325             $ARCH_EXT_LIST_ARM
5326
5327     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5328
5329     check_as <<EOF && enable as_dn_directive
5330 ra .dn d0.i16
5331 .unreq ra
5332 EOF
5333     check_as <<EOF && enable as_fpu_directive
5334 .fpu neon
5335 EOF
5336
5337     # llvm's integrated assembler supports .object_arch from llvm 3.5
5338     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5339 .object_arch armv4
5340 EOF
5341
5342     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5343
5344 elif enabled mips; then
5345
5346     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5347     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5348     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5349
5350     # Enable minimum ISA based on selected options
5351     if enabled mips64; then
5352         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5353         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5354         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5355     else
5356         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5357         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5358         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5359         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5360     fi
5361
5362     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5363     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5364     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5365     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5366     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5367
5368 elif enabled parisc; then
5369
5370     if enabled gcc; then
5371         case $($cc -dumpversion) in
5372             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5373         esac
5374     fi
5375
5376 elif enabled ppc; then
5377
5378     enable local_aligned_8 local_aligned_16 local_aligned_32
5379
5380     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5381     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5382     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5383     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5384
5385     # AltiVec flags: The FSF version of GCC differs from the Apple version
5386     if enabled altivec; then
5387         check_cflags -maltivec -mabi=altivec &&
5388         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5389         check_cflags -faltivec
5390
5391         # check if our compiler supports Motorola AltiVec C API
5392         check_cc <<EOF || disable altivec
5393 $inc_altivec_h
5394 int main(void) {
5395     vector signed int v1 = (vector signed int) { 0 };
5396     vector signed int v2 = (vector signed int) { 1 };
5397     v1 = vec_add(v1, v2);
5398     return 0;
5399 }
5400 EOF
5401
5402         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5403     fi
5404
5405     if enabled vsx; then
5406         check_cflags -mvsx &&
5407         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5408     fi
5409
5410     if enabled power8; then
5411         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5412     fi
5413
5414 elif enabled x86; then
5415
5416     check_builtin rdtsc    intrin.h   "__rdtsc()"
5417     check_builtin mm_empty mmintrin.h "_mm_empty()"
5418
5419     enable local_aligned_8 local_aligned_16 local_aligned_32
5420
5421     # check whether EBP is available on x86
5422     # As 'i' is stored on the stack, this program will crash
5423     # if the base pointer is used to access it because the
5424     # base pointer is cleared in the inline assembly code.
5425     check_exec_crash <<EOF && enable ebp_available
5426 volatile int i=0;
5427 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5428 return i;
5429 EOF
5430
5431     # check whether EBX is available on x86
5432     check_inline_asm ebx_available '""::"b"(0)' &&
5433         check_inline_asm ebx_available '"":::"%ebx"'
5434
5435     # check whether xmm clobbers are supported
5436     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5437
5438     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5439         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5440
5441     # check whether binutils is new enough to compile SSSE3/MMXEXT
5442     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5443     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5444
5445     if ! disabled_any asm mmx yasm; then
5446         if check_cmd $yasmexe --version; then
5447             enabled x86_64 && yasm_extra="-m amd64"
5448             yasm_debug="-g dwarf2"
5449         elif check_cmd nasm -v; then
5450             yasmexe=nasm
5451             yasm_debug="-g -F dwarf"
5452             if enabled x86_64; then
5453                 case "$objformat" in
5454                     elf)   objformat=elf64 ;;
5455                     win32) objformat=win64 ;;
5456                 esac
5457             fi
5458         fi
5459
5460         YASMFLAGS="-f $objformat $yasm_extra"
5461         enabled pic               && append YASMFLAGS "-DPIC"
5462         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5463         case "$objformat" in
5464             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5465         esac
5466
5467         check_yasm "movbe ecx, [5]" && enable yasm ||
5468             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5469         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5470         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5471         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5472         check_yasm "CPU amdnop" || disable cpunop
5473     fi
5474
5475     case "$cpu" in
5476         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5477             disable fast_clz
5478         ;;
5479     esac
5480
5481 fi
5482
5483 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5484
5485 check_ldflags -Wl,--as-needed
5486 check_ldflags -Wl,-z,noexecstack
5487
5488 if check_func dlopen && check_func dlsym; then
5489     ldl=
5490 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5491     ldl=-ldl
5492 fi
5493
5494 avisynth_demuxer_extralibs='$ldl'
5495 cuda_extralibs='$ldl'
5496 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5497 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5498 frei0r_filter_extralibs='$ldl'
5499 frei0r_src_filter_extralibs='$ldl'
5500 ladspa_filter_extralibs='$ldl'
5501 nvenc_extralibs='$ldl'
5502 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5503 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5504
5505 if ! disabled network; then
5506     check_func getaddrinfo $network_extralibs
5507     check_func inet_aton $network_extralibs
5508
5509     check_type netdb.h "struct addrinfo"
5510     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5511     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5512     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5513     check_type poll.h "struct pollfd"
5514     check_type netinet/sctp.h "struct sctp_event_subscribe"
5515     check_struct "sys/socket.h" "struct msghdr" msg_flags
5516     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5517     check_type netinet/in.h "struct sockaddr_in6"
5518     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5519     check_type "sys/types.h sys/socket.h" socklen_t
5520
5521     # Prefer arpa/inet.h over winsock2
5522     if check_header arpa/inet.h ; then
5523         check_func closesocket
5524     elif check_header winsock2.h ; then
5525         check_func_headers winsock2.h closesocket -lws2 &&
5526             network_extralibs="-lws2" ||
5527         { check_func_headers winsock2.h closesocket -lws2_32 &&
5528             network_extralibs="-lws2_32"; } || disable winsock2_h network
5529         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5530
5531         check_type ws2tcpip.h socklen_t
5532         check_type ws2tcpip.h "struct addrinfo"
5533         check_type ws2tcpip.h "struct group_source_req"
5534         check_type ws2tcpip.h "struct ip_mreq_source"
5535         check_type ws2tcpip.h "struct ipv6_mreq"
5536         check_type winsock2.h "struct pollfd"
5537         check_struct winsock2.h "struct sockaddr" sa_len
5538         check_type ws2tcpip.h "struct sockaddr_in6"
5539         check_type ws2tcpip.h "struct sockaddr_storage"
5540     else
5541         disable network
5542     fi
5543 fi
5544
5545 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5546 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5547 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5548 check_builtin sarestart signal.h "SA_RESTART"
5549 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5550 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5551 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5552 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5553 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5554
5555 case "$custom_allocator" in
5556     jemalloc)
5557         # jemalloc by default does not use a prefix
5558         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5559     ;;
5560     tcmalloc)
5561         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5562         malloc_prefix=tc_
5563     ;;
5564 esac
5565
5566 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5567 check_func  ${malloc_prefix}memalign            && enable memalign
5568 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5569
5570 check_func  access
5571 check_func_headers stdlib.h arc4random
5572 check_func_headers time.h clock_gettime ||
5573     { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
5574 check_func  fcntl
5575 check_func  fork
5576 check_func  gethrtime
5577 check_func  getopt
5578 check_func  getrusage
5579 check_func  gettimeofday
5580 check_func  isatty
5581 check_func  mach_absolute_time
5582 check_func  mkstemp
5583 check_func  mmap
5584 check_func  mprotect
5585 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5586 check_func_headers time.h nanosleep ||
5587     { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
5588 check_func  sched_getaffinity
5589 check_func  setrlimit
5590 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5591 check_func  strerror_r
5592 check_func  sysconf
5593 check_func  sysctl
5594 check_func  usleep
5595
5596 check_func_headers conio.h kbhit
5597 check_func_headers io.h setmode
5598 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5599 check_func_headers stdlib.h getenv
5600 check_func_headers sys/stat.h lstat
5601
5602 check_func_headers windows.h CoTaskMemFree -lole32
5603 check_func_headers windows.h GetProcessAffinityMask
5604 check_func_headers windows.h GetProcessTimes
5605 check_func_headers windows.h GetSystemTimeAsFileTime
5606 check_func_headers windows.h LoadLibrary
5607 check_func_headers windows.h MapViewOfFile
5608 check_func_headers windows.h PeekNamedPipe
5609 check_func_headers windows.h SetConsoleTextAttribute
5610 check_func_headers windows.h SetConsoleCtrlHandler
5611 check_func_headers windows.h Sleep
5612 check_func_headers windows.h VirtualAlloc
5613 check_struct windows.h "CONDITION_VARIABLE" Ptr
5614 check_func_headers glob.h glob
5615 enabled xlib &&
5616     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5617
5618 check_header AudioToolbox/AudioToolbox.h
5619 check_header direct.h
5620 check_header dirent.h
5621 check_header dlfcn.h
5622 check_header d3d11.h
5623 check_header dxva.h
5624 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5625 check_header io.h
5626 check_header libcrystalhd/libcrystalhd_if.h
5627 check_header mach/mach_time.h
5628 check_header malloc.h
5629 check_header net/udplite.h
5630 check_header poll.h
5631 check_header sys/mman.h
5632 check_header sys/param.h
5633 check_header sys/resource.h
5634 check_header sys/select.h
5635 check_header sys/time.h
5636 check_header sys/un.h
5637 check_header termios.h
5638 check_header unistd.h
5639 check_header valgrind/valgrind.h
5640 check_header vdpau/vdpau.h
5641 check_header vdpau/vdpau_x11.h
5642 check_header VideoDecodeAcceleration/VDADecoder.h
5643 check_header VideoToolbox/VideoToolbox.h
5644 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5645 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5646 check_header windows.h
5647 check_header X11/extensions/XvMClib.h
5648 check_header asm/types.h
5649
5650 # it seems there are versions of clang in some distros that try to use the
5651 # gcc headers, which explodes for stdatomic
5652 # so we also check that atomics actually work here
5653 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5654
5655 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5656 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5657 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5658
5659 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5660
5661 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5662
5663 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5664 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5665 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5666 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5667 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5668
5669 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5670 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5671 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5672 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5673 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5674 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5675 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5676 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5677
5678 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5679
5680 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5681
5682 if ! disabled w32threads && ! enabled pthreads; then
5683     check_func_headers "windows.h process.h" _beginthreadex &&
5684         enable w32threads || disable w32threads
5685     if ! enabled w32threads && enabled winrt; then
5686         check_func_headers "windows.h" CreateThread &&
5687             enable w32threads || disable w32threads
5688     fi
5689 fi
5690
5691 # check for some common methods of building with pthread support
5692 # do this before the optional library checks as some of them require pthreads
5693 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5694     enable pthreads
5695     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5696         add_cflags -pthread
5697         add_extralibs -pthread
5698     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5699         add_cflags -pthreads
5700         add_extralibs -pthreads
5701     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5702         add_cflags -ldl -pthread
5703         add_extralibs -ldl -pthread
5704     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5705         add_extralibs -lpthreadGC2
5706     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5707         :
5708     elif ! check_func pthread_join && ! check_func pthread_create; then
5709         disable pthreads
5710     fi
5711     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5712 fi
5713
5714
5715 if enabled pthreads; then
5716   check_func pthread_cancel
5717 fi
5718
5719 enabled pthreads &&
5720     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5721
5722 disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
5723 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
5724 disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
5725
5726 check_lib math.h sin -lm && LIBM="-lm"
5727 disabled crystalhd || check_lib "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5728
5729 atan2f_args=2
5730 copysign_args=2
5731 hypot_args=2
5732 ldexpf_args=2
5733 powf_args=2
5734
5735 for func in $MATH_FUNCS; do
5736     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5737 done
5738
5739 for func in $COMPLEX_FUNCS; do
5740     eval check_complexfunc $func \${${func}_args:-1}
5741 done
5742
5743 # these are off by default, so fail if requested and not available
5744 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5745 enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5746                                 check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5747 enabled cuda              && check_header cuda.h # this is not a dependency
5748 enabled cuvid             && { enabled cuda ||
5749                                die "ERROR: CUVID requires CUDA"; }
5750 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5751 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5752 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5753 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5754                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5755 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5756 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5757 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5758 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5759                                check_lib "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5760 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5761 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5762 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5763 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5764 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5765 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5766                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5767                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5768 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5769 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5770 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5771                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5772                                  warn "using libfdk without pkg-config"; } }
5773 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
5774 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_libs
5775 enabled fontconfig        && enable libfontconfig
5776 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5777 enabled libfreetype       && require_libfreetype
5778 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5779 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5780 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5781                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5782                                done || die "ERROR: libgsm not found"; }
5783 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5784 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5785 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5786 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5787 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5788 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5789 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5790 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5791 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5792 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5793                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5794                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5795                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5796 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5797 enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5798                                check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5799                                { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5800                                { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5801                                { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5802                                die "ERROR: libopenjpeg not found"; }
5803 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5804 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5805 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5806 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5807 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5808 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5809 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5810 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5811                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5812 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5813 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5814 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5815 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5816 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5817 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5818 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5819                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5820                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5821 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5822 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5823 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5824 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5825
5826 enabled libvpx            && {
5827     enabled libvpx_vp8_decoder && {
5828         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5829             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5830                 die "ERROR: libvpx decoder version must be >=0.9.1";
5831     }
5832     enabled libvpx_vp8_encoder && {
5833         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5834             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5835                 die "ERROR: libvpx encoder version must be >=0.9.7";
5836     }
5837     enabled libvpx_vp9_decoder && {
5838         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5839             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5840                 disable libvpx_vp9_decoder;
5841     }
5842     enabled libvpx_vp9_encoder && {
5843         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5844             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5845                 disable libvpx_vp9_encoder;
5846     }
5847     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5848         die "libvpx enabled but no supported decoders found"
5849     fi
5850 }
5851
5852 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5853 enabled libwebp           && {
5854     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5855     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5856 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5857                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5858                                  warn "using libx264 without pkg-config"; } } &&
5859                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5860                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5861                              { check_cpp_condition x264.h "X264_MPEG2" &&
5862                                enable libx262; }
5863 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5864                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5865                                die "ERROR: libx265 version must be >= 68."; }
5866 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5867 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5868 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5869 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5870 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5871                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5872                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5873 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5874 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5875                                { ! enabled cross_compile &&
5876                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5877                                  add_ldflags -L/opt/vc/lib/ &&
5878                                  check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5879                                die "ERROR: mmal not found" &&
5880                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5881 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5882 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5883                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5884                                die "ERROR: openal not found"; } &&
5885                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5886                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5887 enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5888                                check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5889                                die "ERROR: opencl not found"; } &&
5890                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5891                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5892                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5893 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5894                                check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5895                                check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5896                                check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5897                                die "ERROR: opengl not found."
5898                              }
5899 enabled omx_rpi           && { check_header OMX_Core.h ||
5900                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5901                                die "ERROR: OpenMAX IL headers not found"; }
5902 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5903 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5904                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5905                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5906                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5907                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5908                                die "ERROR: openssl not found"; }
5909 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5910
5911 if enabled gcrypt; then
5912     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5913     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5914         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5915         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5916         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5917             die "ERROR: gcrypt not found"
5918         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5919     else
5920         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5921     fi
5922 fi
5923
5924 disabled sdl && disable sdl2
5925 if ! disabled sdl2; then
5926     SDL2_CONFIG="${cross_prefix}sdl2-config"
5927     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5928         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5929         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5930         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5931     else
5932       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5933         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5934         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5935         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5936         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5937         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5938       fi
5939     fi
5940     if test $target_os = "mingw32"; then
5941         sdl2_libs="$sdl2_libs -mconsole"
5942     fi
5943 fi
5944 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5945
5946 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5947     check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5948     enable securetransport; }
5949
5950 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5951                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5952
5953 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5954 enabled makeinfo \
5955     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5956     && enable makeinfo_html || disable makeinfo_html
5957 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5958 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5959 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5960 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5961
5962 check_header linux/fb.h
5963 check_header linux/videodev.h
5964 check_header linux/videodev2.h
5965 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5966
5967 check_header sys/videoio.h
5968 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5969
5970 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5971 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5972 # w32api 3.12 had it defined wrong
5973 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5974
5975 check_type "dshow.h" IBaseFilter
5976
5977 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5978 { check_header dev/bktr/ioctl_meteor.h &&
5979   check_header dev/bktr/ioctl_bt848.h; } ||
5980 { check_header machine/ioctl_meteor.h &&
5981   check_header machine/ioctl_bt848.h; } ||
5982 { check_header dev/video/meteor/ioctl_meteor.h &&
5983   check_header dev/video/bktr/ioctl_bt848.h; } ||
5984 check_header dev/ic/bt8xx.h
5985
5986 check_header sndio.h
5987 if check_struct sys/soundcard.h audio_buf_info bytes; then
5988     enable_safe sys/soundcard.h
5989 else
5990     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5991     #include <sys/soundcard.h>
5992     audio_buf_info abc;
5993 EOF
5994 fi
5995 check_header soundcard.h
5996
5997 enabled_any alsa_indev alsa_outdev &&
5998     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
5999
6000 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
6001     check_func jack_port_get_latency_range -ljack
6002
6003 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
6004
6005 if enabled libcdio; then
6006     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6007     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6008     die "ERROR: No usable libcdio/cdparanoia found"
6009 fi
6010
6011 if ! disabled libxcb; then
6012     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6013         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6014     } && enable libxcb
6015
6016 if enabled libxcb; then
6017     disabled libxcb_shm || {
6018         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6019             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6020         } && check_header sys/shm.h && enable libxcb_shm; }
6021
6022     disabled libxcb_xfixes || {
6023         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6024             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6025         } && enable libxcb_xfixes; }
6026
6027     disabled libxcb_shape || {
6028         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6029             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6030         } && enable libxcb_shape; }
6031
6032     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6033     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6034 fi
6035 fi
6036
6037 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6038
6039 enabled dxva2api_h &&
6040     check_cc <<EOF && enable dxva2api_cobj
6041 #define _WIN32_WINNT 0x0600
6042 #define COBJMACROS
6043 #include <windows.h>
6044 #include <d3d9.h>
6045 #include <dxva2api.h>
6046 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6047 EOF
6048
6049 enabled vaapi &&
6050     check_lib va/va.h vaInitialize -lva ||
6051     disable vaapi
6052
6053 enabled vaapi &&
6054     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6055     disable vaapi
6056
6057 enabled vaapi &&
6058     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6059     enable vaapi_drm
6060
6061 enabled vaapi &&
6062     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11 &&
6063     enable vaapi_x11
6064
6065 enabled vdpau &&
6066     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6067     disable vdpau
6068
6069 enabled vdpau &&
6070     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11 &&
6071     enable vdpau_x11
6072
6073 if enabled x86; then
6074     case $target_os in
6075         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6076             ;;
6077         *)
6078             disable cuda cuvid nvenc
6079             ;;
6080     esac
6081 else
6082     disable cuda cuvid nvenc
6083 fi
6084
6085 enabled nvenc &&
6086     check_cc -I$source_path <<EOF || disable nvenc
6087 #include "compat/nvenc/nvEncodeAPI.h"
6088 NV_ENCODE_API_FUNCTION_LIST flist;
6089 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6090 int main(void) { return 0; }
6091 EOF
6092
6093 # Funny iconv installations are not unusual, so check it after all flags have been set
6094 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
6095
6096 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6097
6098 # add some useful compiler flags if supported
6099 check_cflags -Wdeclaration-after-statement
6100 check_cflags -Wall
6101 check_cflags -Wdisabled-optimization
6102 check_cflags -Wpointer-arith
6103 check_cflags -Wredundant-decls
6104 check_cflags -Wwrite-strings
6105 check_cflags -Wtype-limits
6106 check_cflags -Wundef
6107 check_cflags -Wmissing-prototypes
6108 check_cflags -Wno-pointer-to-int-cast
6109 check_cflags -Wstrict-prototypes
6110 check_cflags -Wempty-body
6111
6112 if enabled extra_warnings; then
6113     check_cflags -Wcast-qual
6114     check_cflags -Wextra
6115     check_cflags -Wpedantic
6116 fi
6117
6118 check_disable_warning(){
6119     warning_flag=-W${1#-Wno-}
6120     test_cflags $warning_flag && add_cflags $1
6121 }
6122
6123 check_disable_warning -Wno-parentheses
6124 check_disable_warning -Wno-switch
6125 check_disable_warning -Wno-format-zero-length
6126 check_disable_warning -Wno-pointer-sign
6127 check_disable_warning -Wno-unused-const-variable
6128
6129 check_disable_warning_headers(){
6130     warning_flag=-W${1#-Wno-}
6131     test_cflags $warning_flag && append cflags_headers $1
6132 }
6133
6134 check_disable_warning_headers -Wno-deprecated-declarations
6135 check_disable_warning_headers -Wno-unused-variable
6136
6137 # add some linker flags
6138 check_ldflags -Wl,--warn-common
6139 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6140 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6141 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6142 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6143
6144 # add some strip flags
6145 # -wN '..@*' is more selective than -x, but not available everywhere.
6146 check_stripflags -wN \'..@*\' || check_stripflags -x
6147
6148 enabled neon_clobber_test &&
6149     check_ldflags -Wl,--wrap,avcodec_open2              \
6150                   -Wl,--wrap,avcodec_decode_audio4      \
6151                   -Wl,--wrap,avcodec_decode_video2      \
6152                   -Wl,--wrap,avcodec_decode_subtitle2   \
6153                   -Wl,--wrap,avcodec_encode_audio2      \
6154                   -Wl,--wrap,avcodec_encode_video2      \
6155                   -Wl,--wrap,avcodec_encode_subtitle    \
6156                   -Wl,--wrap,avcodec_send_packet        \
6157                   -Wl,--wrap,avcodec_receive_packet     \
6158                   -Wl,--wrap,avcodec_send_frame         \
6159                   -Wl,--wrap,avcodec_receive_frame      \
6160                   -Wl,--wrap,swr_convert                \
6161                   -Wl,--wrap,avresample_convert ||
6162     disable neon_clobber_test
6163
6164 enabled xmm_clobber_test &&
6165     check_ldflags -Wl,--wrap,avcodec_open2              \
6166                   -Wl,--wrap,avcodec_decode_audio4      \
6167                   -Wl,--wrap,avcodec_decode_video2      \
6168                   -Wl,--wrap,avcodec_decode_subtitle2   \
6169                   -Wl,--wrap,avcodec_encode_audio2      \
6170                   -Wl,--wrap,avcodec_encode_video2      \
6171                   -Wl,--wrap,avcodec_encode_subtitle    \
6172                   -Wl,--wrap,avcodec_send_packet        \
6173                   -Wl,--wrap,avcodec_receive_packet     \
6174                   -Wl,--wrap,avcodec_send_frame         \
6175                   -Wl,--wrap,avcodec_receive_frame      \
6176                   -Wl,--wrap,swr_convert                \
6177                   -Wl,--wrap,avresample_convert         \
6178                   -Wl,--wrap,sws_scale ||
6179     disable xmm_clobber_test
6180
6181 check_ld "cc" <<EOF && enable proper_dce
6182 extern const int array[512];
6183 static inline int func(void) { return array[0]; }
6184 int main(void) { return 0; }
6185 EOF
6186
6187 if enabled proper_dce; then
6188     echo "X { local: *; };" > $TMPV
6189     if test_ldflags -Wl,${version_script},$TMPV; then
6190         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6191         check_cc <<EOF && enable symver_asm_label
6192 void ff_foo(void) __asm__ ("av_foo@VERSION");
6193 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6194 EOF
6195         check_cc <<EOF && enable symver_gnu_asm
6196 __asm__(".symver ff_foo,av_foo@VERSION");
6197 void ff_foo(void) {}
6198 EOF
6199     fi
6200 fi
6201
6202 if [ -z "$optflags" ]; then
6203     if enabled small; then
6204         optflags=$cflags_size
6205     elif enabled optimizations; then
6206         optflags=$cflags_speed
6207     else
6208         optflags=$cflags_noopt
6209     fi
6210 fi
6211
6212 check_optflags(){
6213     check_cflags "$@"
6214     enabled lto && check_ldflags "$@"
6215 }
6216
6217
6218 if enabled lto; then
6219     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6220     check_cflags  -flto
6221     check_ldflags -flto $cpuflags
6222     disable inline_asm_direct_symbol_refs
6223 fi
6224
6225 check_optflags $optflags
6226 check_optflags -fno-math-errno
6227 check_optflags -fno-signed-zeros
6228
6229 enabled ftrapv && check_cflags -ftrapv
6230
6231 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6232 int x;
6233 EOF
6234
6235
6236 if enabled icc; then
6237     # Just warnings, no remarks
6238     check_cflags -w1
6239     # -wd: Disable following warnings
6240     # 144, 167, 556: -Wno-pointer-sign
6241     # 188: enumerated type mixed with another type
6242     # 1292: attribute "foo" ignored
6243     # 1419: external declaration in primary source file
6244     # 10006: ignoring unknown option -fno-signed-zeros
6245     # 10148: ignoring unknown option -Wno-parentheses
6246     # 10156: ignoring option '-W'; no argument required
6247     # 13200: No EMMS instruction before call to function
6248     # 13203: No EMMS instruction before return from function
6249     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6250     # 11030: Warning unknown option --as-needed
6251     # 10156: ignoring option '-export'; no argument required
6252     check_ldflags -wd10156,11030
6253     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6254     enable ebp_available
6255     # The test above does not test linking
6256     enabled lto && disable symver_asm_label
6257     if enabled x86_32; then
6258         icc_version=$($cc -dumpversion)
6259         test ${icc_version%%.*} -ge 11 &&
6260             check_cflags -falign-stack=maintain-16-byte ||
6261             disable aligned_stack
6262     fi
6263 elif enabled ccc; then
6264     # disable some annoying warnings
6265     add_cflags -msg_disable bitnotint
6266     add_cflags -msg_disable mixfuncvoid
6267     add_cflags -msg_disable nonstandcast
6268     add_cflags -msg_disable unsupieee
6269 elif enabled gcc; then
6270     check_optflags -fno-tree-vectorize
6271     check_cflags -Werror=format-security
6272     check_cflags -Werror=implicit-function-declaration
6273     check_cflags -Werror=missing-prototypes
6274     check_cflags -Werror=return-type
6275     check_cflags -Werror=vla
6276     check_cflags -Wformat
6277     check_cflags -fdiagnostics-color=auto
6278     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6279 elif enabled llvm_gcc; then
6280     check_cflags -mllvm -stack-alignment=16
6281 elif enabled clang; then
6282     check_cflags -mllvm -stack-alignment=16
6283     check_cflags -mstack-alignment=16
6284     check_cflags -Qunused-arguments
6285     check_cflags -Werror=implicit-function-declaration
6286     check_cflags -Werror=missing-prototypes
6287     check_cflags -Werror=return-type
6288 elif enabled cparser; then
6289     add_cflags -Wno-missing-variable-declarations
6290     add_cflags -Wno-empty-statement
6291 elif enabled armcc; then
6292     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6293     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6294     # 2523: use of inline assembly is deprecated
6295     add_cflags -W${armcc_opt},--diag_suppress=2523
6296     add_cflags -W${armcc_opt},--diag_suppress=1207
6297     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6298     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6299     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6300     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6301 elif enabled tms470; then
6302     add_cflags -pds=824 -pds=837
6303     disable inline_asm
6304 elif enabled pathscale; then
6305     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6306 elif enabled_any msvc icl; then
6307     enabled x86_32 && disable aligned_stack
6308     enabled_all x86_32 debug && add_cflags -Oy-
6309     enabled debug && add_ldflags -debug
6310     enable pragma_deprecated
6311     if enabled icl; then
6312         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6313         # (correctly) on icl 13.x.
6314         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6315             add_cflags -Qansi-alias
6316         # Some inline asm is not compilable in debug
6317         if enabled debug; then
6318             disable ebp_available
6319             disable ebx_available
6320         fi
6321     fi
6322     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6323     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6324     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6325     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6326     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6327     # MSVC 2013 and newer can handle it fine.
6328     # If this declspec fails, force including stdlib.h before the restrict redefinition
6329     # happens in config.h.
6330     if [ $_restrict != restrict ]; then
6331         check_cc <<EOF || add_cflags -FIstdlib.h
6332 __declspec($_restrict) void* foo(int);
6333 EOF
6334     fi
6335     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6336     # Issue has been fixed in MSVC v19.00.24218.
6337     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6338         check_cflags -d2SSAOptimizer-
6339     # enable utf-8 source processing on VS2015 U2 and newer
6340     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6341         add_cflags -utf-8
6342 fi
6343
6344 for pfx in "" host_; do
6345     varname=${pfx%_}cc_type
6346     eval "type=\$$varname"
6347     if [ $type = "msvc" ]; then
6348         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6349 static inline int foo(int a) { return a; }
6350 EOF
6351     fi
6352 done
6353
6354 case $as_type in
6355     clang)
6356         add_asflags -Qunused-arguments
6357     ;;
6358 esac
6359
6360 case $ld_type in
6361     clang)
6362         check_ldflags -Qunused-arguments
6363     ;;
6364 esac
6365
6366 case $target_os in
6367     osf1)
6368         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6369     ;;
6370 esac
6371
6372 enable frame_thread_encoder
6373
6374 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6375
6376 check_deps $CONFIG_LIST       \
6377            $CONFIG_EXTRA      \
6378            $HAVE_LIST         \
6379            $ALL_COMPONENTS    \
6380
6381 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"
6382
6383
6384 if test $target_os = "haiku"; then
6385     disable memalign
6386     disable posix_memalign
6387 fi
6388
6389 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6390     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6391     enable dxva2_lib
6392
6393 # add_dep lib dep
6394 # -> enable ${lib}_deps_${dep}
6395 # -> add $dep to ${lib}_deps only once
6396 add_dep() {
6397     lib=$1
6398     dep=$2
6399     enabled "${lib}_deps_${dep}" && return 0
6400     enable  "${lib}_deps_${dep}"
6401     prepend "${lib}_deps" $dep
6402 }
6403
6404 # merge deps lib components
6405 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6406 merge_deps() {
6407     lib=$1
6408     shift
6409     for comp in $*; do
6410         enabled $comp || continue
6411         eval "dep=\"\$${comp}_deps\""
6412         for d in $dep; do
6413             add_dep $lib $d
6414         done
6415     done
6416 }
6417
6418 merge_deps libavfilter $FILTER_LIST
6419
6420 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6421
6422 for thread in $THREADS_LIST; do
6423     if enabled $thread; then
6424         test -n "$thread_type" &&
6425             die "ERROR: Only one thread type must be selected." ||
6426             thread_type="$thread"
6427     fi
6428 done
6429
6430 if disabled stdatomic_h; then
6431     if enabled atomics_gcc; then
6432         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6433     elif enabled atomics_win32; then
6434         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6435     elif enabled atomics_suncc; then
6436         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6437     elif enabled pthreads; then
6438         add_compat atomics/pthread/stdatomic.o
6439         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6440     else
6441         enabled threads && die "Threading is enabled, but no atomics are available"
6442         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6443     fi
6444 fi
6445
6446 # Check if requested libraries were found.
6447 for lib in $AUTODETECT_LIBS; do
6448     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6449 done
6450
6451 enabled zlib && add_cppflags -DZLIB_CONST
6452
6453 # conditional library dependencies, in linking order
6454 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6455 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6456 enabled aresample_filter    && prepend avfilter_deps "swresample"
6457 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6458 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6459 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6460 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6461 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6462 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6463 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6464 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6465 enabled pan_filter          && prepend avfilter_deps "swresample"
6466 enabled pp_filter           && prepend avfilter_deps "postproc"
6467 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6468 enabled resample_filter && prepend avfilter_deps "avresample"
6469 enabled sab_filter          && prepend avfilter_deps "swscale"
6470 enabled scale_filter    && prepend avfilter_deps "swscale"
6471 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6472 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6473 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6474 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6475 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6476 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6477 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6478 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6479 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6480
6481 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6482
6483 enabled opus_decoder    && prepend avcodec_deps "swresample"
6484
6485 expand_deps(){
6486     lib_deps=${1}_deps
6487     eval "deps=\$$lib_deps"
6488     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6489     unique $lib_deps
6490 }
6491
6492 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6493 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6494
6495 map 'expand_deps $v' $LIBRARY_LIST
6496
6497 license="LGPL version 2.1 or later"
6498 if enabled nonfree; then
6499     license="nonfree and unredistributable"
6500 elif enabled gplv3; then
6501     license="GPL version 3 or later"
6502 elif enabled lgplv3; then
6503     license="LGPL version 3 or later"
6504 elif enabled gpl; then
6505     license="GPL version 2 or later"
6506 fi
6507
6508 if test "$quiet" != "yes"; then
6509
6510 echo "install prefix            $prefix"
6511 echo "source path               $source_path"
6512 echo "C compiler                $cc"
6513 echo "C library                 $libc_type"
6514 if test "$host_cc" != "$cc"; then
6515     echo "host C compiler           $host_cc"
6516     echo "host C library            $host_libc_type"
6517 fi
6518 echo "ARCH                      $arch ($cpu)"
6519 if test "$build_suffix" != ""; then
6520     echo "build suffix              $build_suffix"
6521 fi
6522 if test "$progs_suffix" != ""; then
6523     echo "progs suffix              $progs_suffix"
6524 fi
6525 if test "$extra_version" != ""; then
6526     echo "version string suffix     $extra_version"
6527 fi
6528 echo "big-endian                ${bigendian-no}"
6529 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6530 if enabled x86; then
6531     echo "${yasmexe}                      ${yasm-no}"
6532     echo "MMX enabled               ${mmx-no}"
6533     echo "MMXEXT enabled            ${mmxext-no}"
6534     echo "3DNow! enabled            ${amd3dnow-no}"
6535     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6536     echo "SSE enabled               ${sse-no}"
6537     echo "SSSE3 enabled             ${ssse3-no}"
6538     echo "AESNI enabled             ${aesni-no}"
6539     echo "AVX enabled               ${avx-no}"
6540     echo "XOP enabled               ${xop-no}"
6541     echo "FMA3 enabled              ${fma3-no}"
6542     echo "FMA4 enabled              ${fma4-no}"
6543     echo "i686 features enabled     ${i686-no}"
6544     echo "CMOV is fast              ${fast_cmov-no}"
6545     echo "EBX available             ${ebx_available-no}"
6546     echo "EBP available             ${ebp_available-no}"
6547 fi
6548 if enabled aarch64; then
6549     echo "NEON enabled              ${neon-no}"
6550     echo "VFP enabled               ${vfp-no}"
6551 fi
6552 if enabled arm; then
6553     echo "ARMv5TE enabled           ${armv5te-no}"
6554     echo "ARMv6 enabled             ${armv6-no}"
6555     echo "ARMv6T2 enabled           ${armv6t2-no}"
6556     echo "VFP enabled               ${vfp-no}"
6557     echo "NEON enabled              ${neon-no}"
6558     echo "THUMB enabled             ${thumb-no}"
6559 fi
6560 if enabled mips; then
6561     echo "MIPS FPU enabled          ${mipsfpu-no}"
6562     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6563     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6564     echo "MIPS MSA enabled          ${msa-no}"
6565     echo "LOONGSON MMI enabled      ${mmi-no}"
6566 fi
6567 if enabled ppc; then
6568     echo "AltiVec enabled           ${altivec-no}"
6569     echo "VSX enabled               ${vsx-no}"
6570     echo "POWER8 enabled            ${power8-no}"
6571     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6572     echo "dcbzl available           ${dcbzl-no}"
6573 fi
6574 echo "debug symbols             ${debug-no}"
6575 echo "strip symbols             ${stripping-no}"
6576 echo "optimize for size         ${small-no}"
6577 echo "optimizations             ${optimizations-no}"
6578 echo "static                    ${static-no}"
6579 echo "shared                    ${shared-no}"
6580 echo "postprocessing support    ${postproc-no}"
6581 echo "network support           ${network-no}"
6582 echo "threading support         ${thread_type-no}"
6583 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6584 echo "texi2html enabled         ${texi2html-no}"
6585 echo "perl enabled              ${perl-no}"
6586 echo "pod2man enabled           ${pod2man-no}"
6587 echo "makeinfo enabled          ${makeinfo-no}"
6588 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6589 test -n "$random_seed" &&
6590     echo "random seed               ${random_seed}"
6591 echo
6592
6593 echo "External libraries:"
6594 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6595 echo
6596
6597 echo "External libraries providing hardware acceleration:"
6598 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6599 echo
6600
6601 echo "Libraries:"
6602 print_enabled '' $LIBRARY_LIST | print_in_columns
6603 echo
6604
6605 echo "Programs:"
6606 print_enabled '' $PROGRAM_LIST | print_in_columns
6607 echo
6608
6609 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6610     echo "Enabled ${type}s:"
6611     eval list=\$$(toupper $type)_LIST
6612     print_enabled '_*' $list | print_in_columns
6613     echo
6614 done
6615
6616 echo "License: $license"
6617
6618 echo "Creating configuration files ..."
6619
6620 fi # test "$quiet" != "yes"
6621
6622 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6623
6624 enabled stripping || strip="echo skipping strip"
6625
6626 config_files="$TMPH config.mak doc/config.texi"
6627
6628 cat > config.mak <<EOF
6629 # Automatically generated by configure - do not modify!
6630 ifndef FFMPEG_CONFIG_MAK
6631 FFMPEG_CONFIG_MAK=1
6632 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6633 prefix=$prefix
6634 LIBDIR=\$(DESTDIR)$libdir
6635 SHLIBDIR=\$(DESTDIR)$shlibdir
6636 INCDIR=\$(DESTDIR)$incdir
6637 BINDIR=\$(DESTDIR)$bindir
6638 DATADIR=\$(DESTDIR)$datadir
6639 DOCDIR=\$(DESTDIR)$docdir
6640 MANDIR=\$(DESTDIR)$mandir
6641 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6642 INSTALL_NAME_DIR=$install_name_dir
6643 SRC_PATH=$source_path
6644 SRC_LINK=$source_link
6645 ifndef MAIN_MAKEFILE
6646 SRC_PATH:=\$(SRC_PATH:.%=..%)
6647 endif
6648 CC_IDENT=$cc_ident
6649 ARCH=$arch
6650 INTRINSICS=$intrinsics
6651 CC=$cc
6652 CXX=$cxx
6653 AS=$as
6654 OBJCC=$objcc
6655 LD=$ld
6656 DEPCC=$dep_cc
6657 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6658 DEPAS=$as
6659 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6660 YASM=$yasmexe
6661 DEPYASM=$yasmexe
6662 AR=$ar
6663 ARFLAGS=$arflags
6664 AR_O=$ar_o
6665 RANLIB=$ranlib
6666 STRIP=$strip
6667 CP=cp -p
6668 LN_S=$ln_s
6669 CPPFLAGS=$CPPFLAGS
6670 CFLAGS=$CFLAGS
6671 CXXFLAGS=$CXXFLAGS
6672 OBJCFLAGS=$OBJCFLAGS
6673 ASFLAGS=$ASFLAGS
6674 AS_C=$AS_C
6675 AS_O=$AS_O
6676 OBJCC_C=$OBJCC_C
6677 OBJCC_E=$OBJCC_E
6678 OBJCC_O=$OBJCC_O
6679 CC_C=$CC_C
6680 CC_E=$CC_E
6681 CC_O=$CC_O
6682 CXX_C=$CXX_C
6683 CXX_O=$CXX_O
6684 LD_O=$LD_O
6685 LD_LIB=$LD_LIB
6686 LD_PATH=$LD_PATH
6687 DLLTOOL=$dlltool
6688 WINDRES=$windres
6689 DEPWINDRES=$dep_cc
6690 DOXYGEN=$doxygen
6691 LDFLAGS=$LDFLAGS
6692 LDEXEFLAGS=$LDEXEFLAGS
6693 LDLIBFLAGS=$LDLIBFLAGS
6694 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6695 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6696 YASMFLAGS=$YASMFLAGS
6697 BUILDSUF=$build_suffix
6698 PROGSSUF=$progs_suffix
6699 FULLNAME=$FULLNAME
6700 LIBPREF=$LIBPREF
6701 LIBSUF=$LIBSUF
6702 LIBNAME=$LIBNAME
6703 SLIBPREF=$SLIBPREF
6704 SLIBSUF=$SLIBSUF
6705 EXESUF=$EXESUF
6706 EXTRA_VERSION=$extra_version
6707 CCDEP=$CCDEP
6708 CXXDEP=$CXXDEP
6709 CCDEP_FLAGS=$CCDEP_FLAGS
6710 ASDEP=$ASDEP
6711 ASDEP_FLAGS=$ASDEP_FLAGS
6712 CC_DEPFLAGS=$CC_DEPFLAGS
6713 AS_DEPFLAGS=$AS_DEPFLAGS
6714 HOSTCC=$host_cc
6715 HOSTLD=$host_ld
6716 HOSTCFLAGS=$host_cflags
6717 HOSTCPPFLAGS=$host_cppflags
6718 HOSTEXESUF=$HOSTEXESUF
6719 HOSTLDFLAGS=$host_ldflags
6720 HOSTLIBS=$host_libs
6721 DEPHOSTCC=$host_cc
6722 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6723 HOSTCCDEP=$HOSTCCDEP
6724 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6725 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6726 HOSTCC_C=$HOSTCC_C
6727 HOSTCC_O=$HOSTCC_O
6728 HOSTLD_O=$HOSTLD_O
6729 TARGET_EXEC=$target_exec $target_exec_args
6730 TARGET_PATH=$target_path
6731 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6732 CFLAGS-ffplay=${sdl2_cflags}
6733 CFLAGS_HEADERS=$cflags_headers
6734 ZLIB=$($ldflags_filter -lz)
6735 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6736 EXTRALIBS=$extralibs
6737 COMPAT_OBJS=$compat_objs
6738 INSTALL=$install
6739 LIBTARGET=${LIBTARGET}
6740 SLIBNAME=${SLIBNAME}
6741 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6742 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6743 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6744 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6745 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6746 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6747 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6748 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6749 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6750 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6751 NOREDZONE_FLAGS=$noredzone_flags
6752 EOF
6753
6754 get_version(){
6755     lcname=lib${1}
6756     name=$(toupper $lcname)
6757     file=$source_path/$lcname/version.h
6758     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6759     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6760     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6761     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6762     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6763     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6764 }
6765
6766 map 'get_version $v' $LIBRARY_LIST
6767
6768 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6769
6770 print_program_libs(){
6771     eval "program_libs=\$${1}_libs"
6772     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6773 }
6774
6775 map 'print_program_libs $v' $PROGRAM_LIST
6776
6777 cat > $TMPH <<EOF
6778 /* Automatically generated by configure - do not modify! */
6779 #ifndef FFMPEG_CONFIG_H
6780 #define FFMPEG_CONFIG_H
6781 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6782 #define FFMPEG_LICENSE "$(c_escape $license)"
6783 #define CONFIG_THIS_YEAR 2017
6784 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6785 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6786 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6787 #define av_restrict $_restrict
6788 #define EXTERN_PREFIX "${extern_prefix}"
6789 #define EXTERN_ASM ${extern_prefix}
6790 #define BUILDSUF "$build_suffix"
6791 #define SLIBSUF "$SLIBSUF"
6792 #define HAVE_MMX2 HAVE_MMXEXT
6793 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6794 EOF
6795
6796 test -n "$assert_level" &&
6797     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6798
6799 test -n "$malloc_prefix" &&
6800     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6801
6802 if enabled yasm; then
6803     append config_files $TMPASM
6804     printf '' >$TMPASM
6805 fi
6806
6807 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6808
6809
6810 mkdir -p doc
6811 mkdir -p tests
6812 mkdir -p tests/api
6813 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6814
6815 print_config ARCH_   "$config_files" $ARCH_LIST
6816 print_config HAVE_   "$config_files" $HAVE_LIST
6817 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6818                                      $CONFIG_EXTRA      \
6819                                      $ALL_COMPONENTS    \
6820
6821 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6822 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6823
6824 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6825 cp_if_changed $TMPH config.h
6826 touch .config
6827
6828 enabled yasm && cp_if_changed $TMPASM config.asm
6829
6830 cat > $TMPH <<EOF
6831 /* Generated by ffconf */
6832 #ifndef AVUTIL_AVCONFIG_H
6833 #define AVUTIL_AVCONFIG_H
6834 EOF
6835
6836 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6837
6838 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6839
6840 cp_if_changed $TMPH libavutil/avconfig.h
6841
6842 # generate the lists of enabled components
6843 print_enabled_components(){
6844     file=$1
6845     struct_name=$2
6846     name=$3
6847     shift 3
6848     echo "static const $struct_name *$name[] = {" > $TMPH
6849     for c in $*; do
6850         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6851     done
6852     echo "    NULL };" >> $TMPH
6853     cp_if_changed $TMPH $file
6854 }
6855
6856 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6857 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6858
6859 if test -n "$WARNINGS"; then
6860     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6861     enabled fatal_warnings && exit 1
6862 fi
6863
6864 # build pkg-config files
6865
6866 lib_version(){
6867     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6868 }
6869
6870 pkgconfig_generate(){
6871     name=$1
6872     shortname=${name#lib}${build_suffix}
6873     comment=$2
6874     version=$3
6875     libs=$4
6876     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6877     requires=${requires%, }
6878     enabled ${name#lib} || return 0
6879     mkdir -p $name
6880     cat <<EOF > $name/$name${build_suffix}.pc
6881 prefix=$prefix
6882 exec_prefix=\${prefix}
6883 libdir=$libdir
6884 includedir=$incdir
6885
6886 Name: $name
6887 Description: $comment
6888 Version: $version
6889 Requires: $(enabled shared || echo $requires)
6890 Requires.private: $(enabled shared && echo $requires)
6891 Conflicts:
6892 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6893 Libs.private: $(enabled shared && echo $libs)
6894 Cflags: -I\${includedir}
6895 EOF
6896
6897 mkdir -p doc/examples/pc-uninstalled
6898 includedir=${source_path}
6899 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6900     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6901 prefix=
6902 exec_prefix=
6903 libdir=\${pcfiledir}/../../../$name
6904 includedir=${includedir}
6905
6906 Name: $name
6907 Description: $comment
6908 Version: $version
6909 Requires: $requires
6910 Conflicts:
6911 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6912 Cflags: -I\${includedir}
6913 EOF
6914 }
6915
6916 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6917 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6918 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6919 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6920 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6921 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6922 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6923 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6924 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"