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     pkgandversion="$1"
1237     pkg="${1%% *}"
1238     headers="$2"
1239     funcs="$3"
1240     shift 3
1241     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1242     pkg_cflags=$($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="$1"
1327     headers="$2"
1328     func="$3"
1329     shift 3
1330     check_lib "$headers" $func "$@" || die "ERROR: $name 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 CONFIG_LIST="
1682     $COMPONENT_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 "
1701
1702 THREADS_LIST="
1703     pthreads
1704     os2threads
1705     w32threads
1706 "
1707
1708 ATOMICS_LIST="
1709     atomics_gcc
1710     atomics_suncc
1711     atomics_win32
1712 "
1713
1714 AUTODETECT_LIBS="
1715     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1716     $HWACCEL_AUTODETECT_LIBRARY_LIST
1717     $THREADS_LIST
1718 "
1719
1720 ARCH_LIST="
1721     aarch64
1722     alpha
1723     arm
1724     avr32
1725     avr32_ap
1726     avr32_uc
1727     bfin
1728     ia64
1729     m68k
1730     mips
1731     mips64
1732     parisc
1733     ppc
1734     ppc64
1735     s390
1736     sh4
1737     sparc
1738     sparc64
1739     tilegx
1740     tilepro
1741     tomi
1742     x86
1743     x86_32
1744     x86_64
1745 "
1746
1747 ARCH_EXT_LIST_ARM="
1748     armv5te
1749     armv6
1750     armv6t2
1751     armv8
1752     neon
1753     vfp
1754     vfpv3
1755     setend
1756 "
1757
1758 ARCH_EXT_LIST_MIPS="
1759     mipsfpu
1760     mips32r2
1761     mips32r5
1762     mips64r2
1763     mips32r6
1764     mips64r6
1765     mipsdsp
1766     mipsdspr2
1767     msa
1768 "
1769
1770 ARCH_EXT_LIST_LOONGSON="
1771     loongson2
1772     loongson3
1773     mmi
1774 "
1775
1776 ARCH_EXT_LIST_X86_SIMD="
1777     aesni
1778     amd3dnow
1779     amd3dnowext
1780     avx
1781     avx2
1782     fma3
1783     fma4
1784     mmx
1785     mmxext
1786     sse
1787     sse2
1788     sse3
1789     sse4
1790     sse42
1791     ssse3
1792     xop
1793 "
1794
1795 ARCH_EXT_LIST_PPC="
1796     altivec
1797     dcbzl
1798     ldbrx
1799     power8
1800     ppc4xx
1801     vsx
1802 "
1803
1804 ARCH_EXT_LIST_X86="
1805     $ARCH_EXT_LIST_X86_SIMD
1806     cpunop
1807     i686
1808 "
1809
1810 ARCH_EXT_LIST="
1811     $ARCH_EXT_LIST_ARM
1812     $ARCH_EXT_LIST_PPC
1813     $ARCH_EXT_LIST_X86
1814     $ARCH_EXT_LIST_MIPS
1815     $ARCH_EXT_LIST_LOONGSON
1816 "
1817
1818 ARCH_FEATURES="
1819     aligned_stack
1820     fast_64bit
1821     fast_clz
1822     fast_cmov
1823     local_aligned_8
1824     local_aligned_16
1825     local_aligned_32
1826     simd_align_16
1827     simd_align_32
1828 "
1829
1830 BUILTIN_LIST="
1831     atomic_cas_ptr
1832     machine_rw_barrier
1833     MemoryBarrier
1834     mm_empty
1835     rdtsc
1836     sarestart
1837     sem_timedwait
1838     sync_val_compare_and_swap
1839 "
1840 HAVE_LIST_CMDLINE="
1841     inline_asm
1842     symver
1843     yasm
1844 "
1845
1846 HAVE_LIST_PUB="
1847     bigendian
1848     fast_unaligned
1849 "
1850
1851 HEADERS_LIST="
1852     alsa_asoundlib_h
1853     altivec_h
1854     arpa_inet_h
1855     asm_types_h
1856     cdio_paranoia_h
1857     cdio_paranoia_paranoia_h
1858     cuda_h
1859     dispatch_dispatch_h
1860     dev_bktr_ioctl_bt848_h
1861     dev_bktr_ioctl_meteor_h
1862     dev_ic_bt8xx_h
1863     dev_video_bktr_ioctl_bt848_h
1864     dev_video_meteor_ioctl_meteor_h
1865     direct_h
1866     dirent_h
1867     dlfcn_h
1868     d3d11_h
1869     dxva_h
1870     ES2_gl_h
1871     gsm_h
1872     io_h
1873     mach_mach_time_h
1874     machine_ioctl_bt848_h
1875     machine_ioctl_meteor_h
1876     malloc_h
1877     opencv2_core_core_c_h
1878     openjpeg_2_1_openjpeg_h
1879     openjpeg_2_0_openjpeg_h
1880     openjpeg_1_5_openjpeg_h
1881     OpenGL_gl3_h
1882     poll_h
1883     sndio_h
1884     soundcard_h
1885     stdatomic_h
1886     sys_mman_h
1887     sys_param_h
1888     sys_resource_h
1889     sys_select_h
1890     sys_soundcard_h
1891     sys_time_h
1892     sys_un_h
1893     sys_videoio_h
1894     termios_h
1895     udplite_h
1896     unistd_h
1897     valgrind_valgrind_h
1898     windows_h
1899     winsock2_h
1900 "
1901
1902 INTRINSICS_LIST="
1903     intrinsics_neon
1904 "
1905
1906 COMPLEX_FUNCS="
1907     cabs
1908     cexp
1909 "
1910
1911 MATH_FUNCS="
1912     atanf
1913     atan2f
1914     cbrt
1915     cbrtf
1916     copysign
1917     cosf
1918     erf
1919     exp2
1920     exp2f
1921     expf
1922     hypot
1923     isfinite
1924     isinf
1925     isnan
1926     ldexpf
1927     llrint
1928     llrintf
1929     log2
1930     log2f
1931     log10f
1932     lrint
1933     lrintf
1934     powf
1935     rint
1936     round
1937     roundf
1938     sinf
1939     trunc
1940     truncf
1941 "
1942
1943 SYSTEM_FUNCS="
1944     access
1945     aligned_malloc
1946     arc4random
1947     clock_gettime
1948     closesocket
1949     CommandLineToArgvW
1950     CoTaskMemFree
1951     CryptGenRandom
1952     dlopen
1953     fcntl
1954     flt_lim
1955     fork
1956     getaddrinfo
1957     gethrtime
1958     getopt
1959     GetProcessAffinityMask
1960     GetProcessMemoryInfo
1961     GetProcessTimes
1962     getrusage
1963     GetSystemTimeAsFileTime
1964     gettimeofday
1965     glob
1966     glXGetProcAddress
1967     gmtime_r
1968     inet_aton
1969     isatty
1970     jack_port_get_latency_range
1971     kbhit
1972     LoadLibrary
1973     localtime_r
1974     lstat
1975     lzo1x_999_compress
1976     mach_absolute_time
1977     MapViewOfFile
1978     memalign
1979     mkstemp
1980     mmap
1981     mprotect
1982     nanosleep
1983     PeekNamedPipe
1984     posix_memalign
1985     pthread_cancel
1986     sched_getaffinity
1987     SetConsoleTextAttribute
1988     SetConsoleCtrlHandler
1989     setmode
1990     setrlimit
1991     Sleep
1992     strerror_r
1993     sysconf
1994     sysctl
1995     usleep
1996     UTGetOSTypeFromString
1997     VirtualAlloc
1998     wglGetProcAddress
1999 "
2000
2001 TOOLCHAIN_FEATURES="
2002     as_dn_directive
2003     as_fpu_directive
2004     as_func
2005     as_object_arch
2006     asm_mod_q
2007     attribute_may_alias
2008     attribute_packed
2009     ebp_available
2010     ebx_available
2011     gnu_as
2012     gnu_windres
2013     ibm_asm
2014     inline_asm_direct_symbol_refs
2015     inline_asm_labels
2016     inline_asm_nonlocal_labels
2017     pragma_deprecated
2018     rsync_contimeout
2019     symver_asm_label
2020     symver_gnu_asm
2021     vfp_args
2022     xform_asm
2023     xmm_clobbers
2024 "
2025
2026 TYPES_LIST="
2027     CONDITION_VARIABLE_Ptr
2028     socklen_t
2029     struct_addrinfo
2030     struct_group_source_req
2031     struct_ip_mreq_source
2032     struct_ipv6_mreq
2033     struct_msghdr_msg_flags
2034     struct_pollfd
2035     struct_rusage_ru_maxrss
2036     struct_sctp_event_subscribe
2037     struct_sockaddr_in6
2038     struct_sockaddr_sa_len
2039     struct_sockaddr_storage
2040     struct_stat_st_mtim_tv_nsec
2041     struct_v4l2_frmivalenum_discrete
2042 "
2043
2044 HAVE_LIST="
2045     $ARCH_EXT_LIST
2046     $(add_suffix _external $ARCH_EXT_LIST)
2047     $(add_suffix _inline   $ARCH_EXT_LIST)
2048     $ARCH_FEATURES
2049     $ATOMICS_LIST
2050     $BUILTIN_LIST
2051     $COMPLEX_FUNCS
2052     $HAVE_LIST_CMDLINE
2053     $HAVE_LIST_PUB
2054     $HEADERS_LIST
2055     $INTRINSICS_LIST
2056     $MATH_FUNCS
2057     $SYSTEM_FUNCS
2058     $THREADS_LIST
2059     $TOOLCHAIN_FEATURES
2060     $TYPES_LIST
2061     atomics_native
2062     dos_paths
2063     dxva2_lib
2064     dxva2api_cobj
2065     libc_msvcrt
2066     libdc1394_1
2067     libdc1394_2
2068     makeinfo
2069     makeinfo_html
2070     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2071     perl
2072     pod2man
2073     sdl2
2074     section_data_rel_ro
2075     texi2html
2076     threads
2077     vaapi_drm
2078     vaapi_x11
2079     vdpau_x11
2080     winrt
2081 "
2082
2083 # options emitted with CONFIG_ prefix but not available on the command line
2084 CONFIG_EXTRA="
2085     aandcttables
2086     ac3dsp
2087     audio_frame_queue
2088     audiodsp
2089     blockdsp
2090     bswapdsp
2091     cabac
2092     dirac_parse
2093     dvprofile
2094     exif
2095     faandct
2096     faanidct
2097     fdctdsp
2098     flacdsp
2099     fmtconvert
2100     frame_thread_encoder
2101     g722dsp
2102     golomb
2103     gplv3
2104     h263dsp
2105     h264chroma
2106     h264dsp
2107     h264parse
2108     h264pred
2109     h264qpel
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     mpegvideo
2133     mpegvideoenc
2134     mss34dsp
2135     pixblockdsp
2136     qpeldsp
2137     qsv
2138     qsvdec
2139     qsvenc
2140     rangecoder
2141     riffdec
2142     riffenc
2143     rtpdec
2144     rtpenc_chain
2145     rv34dsp
2146     sinewin
2147     snappy
2148     srtp
2149     startcode
2150     texturedsp
2151     texturedspenc
2152     tpeldsp
2153     vaapi_encode
2154     vc1dsp
2155     videodsp
2156     vp3dsp
2157     vp56dsp
2158     vp8dsp
2159     vt_bt2020
2160     wma_freqs
2161     wmv2dsp
2162 "
2163
2164 CMDLINE_SELECT="
2165     $ARCH_EXT_LIST
2166     $CONFIG_LIST
2167     $HAVE_LIST_CMDLINE
2168     $THREADS_LIST
2169     asm
2170     cross_compile
2171     debug
2172     extra_warnings
2173     logging
2174     lto
2175     optimizations
2176     rpath
2177     stripping
2178 "
2179
2180 PATHS_LIST="
2181     bindir
2182     datadir
2183     docdir
2184     incdir
2185     libdir
2186     mandir
2187     pkgconfigdir
2188     prefix
2189     shlibdir
2190     install_name_dir
2191 "
2192
2193 CMDLINE_SET="
2194     $PATHS_LIST
2195     ar
2196     arch
2197     as
2198     assert_level
2199     build_suffix
2200     cc
2201     objcc
2202     cpu
2203     cross_prefix
2204     custom_allocator
2205     cxx
2206     dep_cc
2207     doxygen
2208     env
2209     extra_version
2210     gas
2211     host_cc
2212     host_cflags
2213     host_ld
2214     host_ldflags
2215     host_libs
2216     host_os
2217     install
2218     ld
2219     ln_s
2220     logfile
2221     malloc_prefix
2222     nm
2223     optflags
2224     pkg_config
2225     pkg_config_flags
2226     progs_suffix
2227     random_seed
2228     ranlib
2229     samples
2230     strip
2231     sws_max_filter_size
2232     sysinclude
2233     sysroot
2234     target_exec
2235     target_os
2236     target_path
2237     target_samples
2238     tempprefix
2239     toolchain
2240     valgrind
2241     yasmexe
2242 "
2243
2244 CMDLINE_APPEND="
2245     extra_cflags
2246     extra_cxxflags
2247     extra_objcflags
2248     host_cppflags
2249 "
2250
2251 # code dependency declarations
2252
2253 # architecture extensions
2254
2255 armv5te_deps="arm"
2256 armv6_deps="arm"
2257 armv6t2_deps="arm"
2258 armv8_deps="aarch64"
2259 neon_deps_any="aarch64 arm"
2260 intrinsics_neon_deps="neon"
2261 vfp_deps_any="aarch64 arm"
2262 vfpv3_deps="vfp"
2263 setend_deps="arm"
2264
2265 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2266
2267 loongson2_deps="mips"
2268 loongson3_deps="mips"
2269 mipsfpu_deps="mips"
2270 mipsdsp_deps="mips"
2271 mipsdspr2_deps="mips"
2272 mips32r2_deps="mips"
2273 mips32r5_deps="mips"
2274 mips32r6_deps="mips"
2275 mips64r2_deps="mips"
2276 mips64r6_deps="mips"
2277 msa_deps="mipsfpu"
2278 mmi_deps="mips"
2279
2280 altivec_deps="ppc"
2281 dcbzl_deps="ppc"
2282 ldbrx_deps="ppc"
2283 ppc4xx_deps="ppc"
2284 vsx_deps="altivec"
2285 power8_deps="vsx"
2286
2287 cpunop_deps="i686"
2288 x86_64_select="i686"
2289 x86_64_suggest="fast_cmov"
2290
2291 amd3dnow_deps="mmx"
2292 amd3dnowext_deps="amd3dnow"
2293 i686_deps="x86"
2294 mmx_deps="x86"
2295 mmxext_deps="mmx"
2296 sse_deps="mmxext"
2297 sse2_deps="sse"
2298 sse3_deps="sse2"
2299 ssse3_deps="sse3"
2300 sse4_deps="ssse3"
2301 sse42_deps="sse4"
2302 aesni_deps="sse42"
2303 avx_deps="sse42"
2304 xop_deps="avx"
2305 fma3_deps="avx"
2306 fma4_deps="avx"
2307 avx2_deps="avx"
2308
2309 mmx_external_deps="yasm"
2310 mmx_inline_deps="inline_asm"
2311 mmx_suggest="mmx_external mmx_inline"
2312
2313 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2314     eval dep=\$${ext}_deps
2315     eval ${ext}_external_deps='"${dep}_external"'
2316     eval ${ext}_inline_deps='"${dep}_inline"'
2317     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2318 done
2319
2320 aligned_stack_if_any="aarch64 ppc x86"
2321 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2322 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2323 fast_unaligned_if_any="aarch64 ppc x86"
2324 simd_align_16_if_any="altivec neon sse"
2325 simd_align_32_if_any="avx"
2326
2327 # system capabilities
2328 symver_if_any="symver_asm_label symver_gnu_asm"
2329 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2330
2331 # threading support
2332 atomics_gcc_if="sync_val_compare_and_swap"
2333 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2334 atomics_win32_if="MemoryBarrier"
2335 atomics_native_if_any="$ATOMICS_LIST"
2336 w32threads_deps="atomics_native"
2337 threads_if_any="$THREADS_LIST"
2338
2339 # subsystems
2340 dct_select="rdft"
2341 dirac_parse_select="golomb"
2342 error_resilience_select="me_cmp"
2343 faandct_deps="faan fdctdsp"
2344 faanidct_deps="faan idctdsp"
2345 h264dsp_select="startcode"
2346 frame_thread_encoder_deps="encoders threads"
2347 intrax8_select="blockdsp idctdsp"
2348 mdct_select="fft"
2349 mdct15_select="fft"
2350 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2351 mpeg_er_select="error_resilience"
2352 mpegaudio_select="mpegaudiodsp"
2353 mpegaudiodsp_select="dct"
2354 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2355 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2356 vc1dsp_select="h264chroma qpeldsp startcode"
2357 rdft_select="fft"
2358
2359 # decoders / encoders
2360 aac_decoder_select="mdct15 mdct sinewin"
2361 aac_fixed_decoder_select="mdct sinewin"
2362 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2363 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2364 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2365 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2366 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2367 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2368 adpcm_g722_decoder_select="g722dsp"
2369 adpcm_g722_encoder_select="g722dsp"
2370 aic_decoder_select="golomb idctdsp"
2371 alac_encoder_select="lpc"
2372 als_decoder_select="bswapdsp"
2373 amrnb_decoder_select="lsp"
2374 amrwb_decoder_select="lsp"
2375 amv_decoder_select="sp5x_decoder exif"
2376 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2377 ape_decoder_select="bswapdsp llauddsp"
2378 apng_decoder_select="zlib"
2379 apng_encoder_select="llvidencdsp zlib"
2380 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2381 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2382 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2383 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2384 atrac1_decoder_select="mdct sinewin"
2385 atrac3_decoder_select="mdct"
2386 atrac3p_decoder_select="mdct sinewin"
2387 avrn_decoder_select="exif jpegtables"
2388 bink_decoder_select="blockdsp hpeldsp"
2389 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2390 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2391 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2392 cllc_decoder_select="bswapdsp"
2393 comfortnoise_encoder_select="lpc"
2394 cook_decoder_select="audiodsp mdct sinewin"
2395 cscd_decoder_select="lzo"
2396 cscd_decoder_suggest="zlib"
2397 dca_decoder_select="mdct"
2398 dds_decoder_select="texturedsp"
2399 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2400 dnxhd_decoder_select="blockdsp idctdsp"
2401 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2402 dvvideo_decoder_select="dvprofile idctdsp"
2403 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2404 dxa_decoder_select="zlib"
2405 dxv_decoder_select="lzf texturedsp"
2406 eac3_decoder_select="ac3_decoder"
2407 eac3_encoder_select="ac3_encoder"
2408 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2409 eatgq_decoder_select="aandcttables"
2410 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2411 exr_decoder_select="zlib"
2412 ffv1_decoder_select="golomb rangecoder"
2413 ffv1_encoder_select="rangecoder"
2414 ffvhuff_decoder_select="huffyuv_decoder"
2415 ffvhuff_encoder_select="huffyuv_encoder"
2416 fic_decoder_select="golomb"
2417 flac_decoder_select="flacdsp golomb"
2418 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2419 flashsv2_decoder_select="zlib"
2420 flashsv2_encoder_select="zlib"
2421 flashsv_decoder_select="zlib"
2422 flashsv_encoder_select="zlib"
2423 flv_decoder_select="h263_decoder"
2424 flv_encoder_select="h263_encoder"
2425 fourxm_decoder_select="blockdsp bswapdsp"
2426 fraps_decoder_select="bswapdsp huffman"
2427 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2428 g729_decoder_select="audiodsp"
2429 h261_decoder_select="mpegvideo"
2430 h261_encoder_select="aandcttables mpegvideoenc"
2431 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2432 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2433 h263i_decoder_select="h263_decoder"
2434 h263p_decoder_select="h263_decoder"
2435 h263p_encoder_select="h263_encoder"
2436 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2437 h264_decoder_suggest="error_resilience"
2438 hap_decoder_select="snappy texturedsp"
2439 hap_encoder_deps="libsnappy"
2440 hap_encoder_select="texturedspenc"
2441 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2442 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2443 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2444 iac_decoder_select="imc_decoder"
2445 imc_decoder_select="bswapdsp fft mdct sinewin"
2446 indeo3_decoder_select="hpeldsp"
2447 indeo4_decoder_select="ividsp"
2448 indeo5_decoder_select="ividsp"
2449 interplay_video_decoder_select="hpeldsp"
2450 jpegls_decoder_select="golomb mjpeg_decoder"
2451 jpegls_encoder_select="golomb"
2452 jv_decoder_select="blockdsp"
2453 lagarith_decoder_select="llviddsp"
2454 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2455 loco_decoder_select="golomb"
2456 magicyuv_decoder_select="llviddsp"
2457 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2458 metasound_decoder_select="lsp mdct sinewin"
2459 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2460 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2461 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2462 mjpegb_decoder_select="mjpeg_decoder"
2463 mlp_decoder_select="mlp_parser"
2464 motionpixels_decoder_select="bswapdsp"
2465 mp1_decoder_select="mpegaudio"
2466 mp1float_decoder_select="mpegaudio"
2467 mp2_decoder_select="mpegaudio"
2468 mp2float_decoder_select="mpegaudio"
2469 mp3_decoder_select="mpegaudio"
2470 mp3adu_decoder_select="mpegaudio"
2471 mp3adufloat_decoder_select="mpegaudio"
2472 mp3float_decoder_select="mpegaudio"
2473 mp3on4_decoder_select="mpegaudio"
2474 mp3on4float_decoder_select="mpegaudio"
2475 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2476 mpc8_decoder_select="mpegaudiodsp"
2477 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2478 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2479 mpegvideo_decoder_select="mpegvideo"
2480 mpeg1video_decoder_select="mpegvideo"
2481 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2482 mpeg2video_decoder_select="mpegvideo"
2483 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2484 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2485 mpeg4_encoder_select="h263_encoder"
2486 msa1_decoder_select="mss34dsp"
2487 msmpeg4v1_decoder_select="h263_decoder"
2488 msmpeg4v2_decoder_select="h263_decoder"
2489 msmpeg4v2_encoder_select="h263_encoder"
2490 msmpeg4v3_decoder_select="h263_decoder"
2491 msmpeg4v3_encoder_select="h263_encoder"
2492 mss2_decoder_select="vc1_decoder mpegvideo"
2493 mts2_decoder_select="mss34dsp"
2494 mxpeg_decoder_select="mjpeg_decoder"
2495 nellymoser_decoder_select="mdct sinewin"
2496 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2497 nuv_decoder_select="idctdsp lzo"
2498 on2avc_decoder_select="mdct"
2499 opus_decoder_deps="swresample"
2500 opus_decoder_select="mdct15"
2501 opus_encoder_select="audio_frame_queue mdct15"
2502 png_decoder_select="zlib"
2503 png_encoder_select="llvidencdsp zlib"
2504 prores_decoder_select="blockdsp idctdsp"
2505 prores_encoder_select="fdctdsp"
2506 qcelp_decoder_select="lsp"
2507 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2508 ra_144_decoder_select="audiodsp"
2509 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2510 ralf_decoder_select="golomb"
2511 rawvideo_decoder_select="bswapdsp"
2512 rscc_decoder_select="zlib"
2513 rtjpeg_decoder_select="me_cmp"
2514 rv10_decoder_select="h263_decoder"
2515 rv10_encoder_select="h263_encoder"
2516 rv20_decoder_select="h263_decoder"
2517 rv20_encoder_select="h263_encoder"
2518 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2519 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2520 screenpresso_decoder_select="zlib"
2521 shorten_decoder_select="golomb bswapdsp"
2522 sipr_decoder_select="lsp"
2523 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2524 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2525 sonic_decoder_select="golomb rangecoder"
2526 sonic_encoder_select="golomb rangecoder"
2527 sonic_ls_encoder_select="golomb rangecoder"
2528 sp5x_decoder_select="mjpeg_decoder"
2529 svq1_decoder_select="hpeldsp"
2530 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2531 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2532 svq3_decoder_suggest="zlib"
2533 tak_decoder_select="audiodsp"
2534 tdsc_decoder_select="zlib mjpeg_decoder"
2535 theora_decoder_select="vp3_decoder"
2536 thp_decoder_select="mjpeg_decoder"
2537 tiff_decoder_suggest="zlib lzma"
2538 tiff_encoder_suggest="zlib"
2539 truehd_decoder_select="mlp_parser"
2540 truemotion2_decoder_select="bswapdsp"
2541 truespeech_decoder_select="bswapdsp"
2542 tscc_decoder_select="zlib"
2543 twinvq_decoder_select="mdct lsp sinewin"
2544 txd_decoder_select="texturedsp"
2545 utvideo_decoder_select="bswapdsp llviddsp"
2546 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2547 vble_decoder_select="llviddsp"
2548 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2549 vc1_qsv_decoder_deps="libmfx"
2550 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2551 vc1image_decoder_select="vc1_decoder"
2552 vorbis_decoder_select="mdct"
2553 vorbis_encoder_select="mdct"
2554 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2555 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2556 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2557 vp6a_decoder_select="vp6_decoder"
2558 vp6f_decoder_select="vp6_decoder"
2559 vp7_decoder_select="h264pred videodsp vp8dsp"
2560 vp8_decoder_select="h264pred videodsp vp8dsp"
2561 vp9_decoder_select="videodsp vp9_parser"
2562 webp_decoder_select="vp8_decoder exif"
2563 wmalossless_decoder_select="llauddsp"
2564 wmapro_decoder_select="mdct sinewin wma_freqs"
2565 wmav1_decoder_select="mdct sinewin wma_freqs"
2566 wmav1_encoder_select="mdct sinewin wma_freqs"
2567 wmav2_decoder_select="mdct sinewin wma_freqs"
2568 wmav2_encoder_select="mdct sinewin wma_freqs"
2569 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2570 wmv1_decoder_select="h263_decoder"
2571 wmv1_encoder_select="h263_encoder"
2572 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2573 wmv2_encoder_select="h263_encoder wmv2dsp"
2574 wmv3_decoder_select="vc1_decoder"
2575 wmv3image_decoder_select="wmv3_decoder"
2576 xma1_decoder_select="wmapro_decoder"
2577 xma2_decoder_select="wmapro_decoder"
2578 zerocodec_decoder_select="zlib"
2579 zlib_decoder_select="zlib"
2580 zlib_encoder_select="zlib"
2581 zmbv_decoder_select="zlib"
2582 zmbv_encoder_select="zlib"
2583
2584 # platform codecs
2585 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2586 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2587
2588 # hardware accelerators
2589 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2590 cuda_deps_any="dlopen LoadLibrary"
2591 cuvid_deps="cuda"
2592 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2593 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2594 dxva2_extralibs="-luser32"
2595 vaapi_deps="va_va_h"
2596 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2597 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2598 vda_deps="vda_framework pthreads"
2599 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2600 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2601 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2602 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2603 xvmc_deps="X11_extensions_XvMClib_h"
2604
2605 h263_vaapi_hwaccel_deps="vaapi"
2606 h263_vaapi_hwaccel_select="h263_decoder"
2607 h263_videotoolbox_hwaccel_deps="videotoolbox"
2608 h263_videotoolbox_hwaccel_select="h263_decoder"
2609 h264_cuvid_hwaccel_deps="cuda cuvid"
2610 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2611 h264_d3d11va_hwaccel_deps="d3d11va"
2612 h264_d3d11va_hwaccel_select="h264_decoder"
2613 h264_dxva2_hwaccel_deps="dxva2"
2614 h264_dxva2_hwaccel_select="h264_decoder"
2615 h264_mediacodec_hwaccel_deps="mediacodec"
2616 h264_mmal_hwaccel_deps="mmal"
2617 h264_qsv_hwaccel_deps="libmfx"
2618 h264_vaapi_hwaccel_deps="vaapi"
2619 h264_vaapi_hwaccel_select="h264_decoder"
2620 h264_vda_hwaccel_deps="vda"
2621 h264_vda_hwaccel_select="h264_decoder"
2622 h264_vda_old_hwaccel_deps="vda"
2623 h264_vda_old_hwaccel_select="h264_decoder"
2624 h264_vdpau_hwaccel_deps="vdpau"
2625 h264_vdpau_hwaccel_select="h264_decoder"
2626 h264_videotoolbox_hwaccel_deps="videotoolbox"
2627 h264_videotoolbox_hwaccel_select="h264_decoder"
2628 hevc_cuvid_hwaccel_deps="cuda cuvid"
2629 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2630 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2631 hevc_d3d11va_hwaccel_select="hevc_decoder"
2632 hevc_mediacodec_hwaccel_deps="mediacodec"
2633 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2634 hevc_dxva2_hwaccel_select="hevc_decoder"
2635 hevc_qsv_hwaccel_deps="libmfx"
2636 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2637 hevc_vaapi_hwaccel_select="hevc_decoder"
2638 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2639 hevc_vdpau_hwaccel_select="hevc_decoder"
2640 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2641 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2642 mpeg_xvmc_hwaccel_deps="xvmc"
2643 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2644 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2645 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2646 mpeg1_vdpau_hwaccel_deps="vdpau"
2647 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2648 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2649 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2650 mpeg1_xvmc_hwaccel_deps="xvmc"
2651 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2652 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2653 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2654 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2655 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2656 mpeg2_dxva2_hwaccel_deps="dxva2"
2657 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2658 mpeg2_mmal_hwaccel_deps="mmal"
2659 mpeg2_qsv_hwaccel_deps="libmfx"
2660 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2661 mpeg2_vaapi_hwaccel_deps="vaapi"
2662 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2663 mpeg2_vdpau_hwaccel_deps="vdpau"
2664 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2665 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2666 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2667 mpeg2_xvmc_hwaccel_deps="xvmc"
2668 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2669 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2670 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2671 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2672 mpeg4_mmal_hwaccel_deps="mmal"
2673 mpeg4_vaapi_hwaccel_deps="vaapi"
2674 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2675 mpeg4_vdpau_hwaccel_deps="vdpau"
2676 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2677 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2678 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2679 vc1_cuvid_hwaccel_deps="cuda cuvid"
2680 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2681 vc1_d3d11va_hwaccel_deps="d3d11va"
2682 vc1_d3d11va_hwaccel_select="vc1_decoder"
2683 vc1_dxva2_hwaccel_deps="dxva2"
2684 vc1_dxva2_hwaccel_select="vc1_decoder"
2685 vc1_mmal_hwaccel_deps="mmal"
2686 vc1_qsv_hwaccel_deps="libmfx"
2687 vc1_qsv_hwaccel_select="qsvdec_vc1"
2688 vc1_vaapi_hwaccel_deps="vaapi"
2689 vc1_vaapi_hwaccel_select="vc1_decoder"
2690 vc1_vdpau_hwaccel_deps="vdpau"
2691 vc1_vdpau_hwaccel_select="vc1_decoder"
2692 vp8_cuvid_hwaccel_deps="cuda cuvid"
2693 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2694 vp9_cuvid_hwaccel_deps="cuda cuvid"
2695 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2696 vp8_mediacodec_hwaccel_deps="mediacodec"
2697 vp8_qsv_hwaccel_deps="libmfx"
2698 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2699 vp9_d3d11va_hwaccel_select="vp9_decoder"
2700 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2701 vp9_dxva2_hwaccel_select="vp9_decoder"
2702 vp9_mediacodec_hwaccel_deps="mediacodec"
2703 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2704 vp9_vaapi_hwaccel_select="vp9_decoder"
2705 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2706 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2707 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2708 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2709
2710 # hardware-accelerated codecs
2711 omx_deps="dlopen pthreads"
2712 omx_extralibs='$ldl'
2713 qsvdec_select="qsv"
2714 qsvenc_select="qsv"
2715 vaapi_encode_deps="vaapi"
2716
2717 hwupload_cuda_filter_deps="cuda"
2718 scale_npp_filter_deps="cuda libnpp"
2719
2720 nvenc_deps="cuda"
2721 nvenc_deps_any="dlopen LoadLibrary"
2722 nvenc_encoder_deps="nvenc"
2723
2724 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2725 h264_cuvid_decoder_deps="cuda cuvid"
2726 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2727 h264_mediacodec_decoder_deps="mediacodec"
2728 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2729 h264_mmal_decoder_deps="mmal"
2730 h264_nvenc_encoder_deps="nvenc"
2731 h264_omx_encoder_deps="omx"
2732 h264_qsv_decoder_deps="libmfx"
2733 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2734 h264_qsv_encoder_deps="libmfx"
2735 h264_qsv_encoder_select="qsvenc"
2736 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2737 h264_vaapi_encoder_select="vaapi_encode golomb"
2738 h264_vda_decoder_deps="vda"
2739 h264_vda_decoder_select="h264_decoder"
2740 h264_vdpau_decoder_deps="vdpau"
2741 h264_vdpau_decoder_select="h264_decoder"
2742 hevc_cuvid_decoder_deps="cuda cuvid"
2743 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2744 hevc_mediacodec_decoder_deps="mediacodec"
2745 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2746 hevc_nvenc_encoder_deps="nvenc"
2747 hevc_qsv_decoder_deps="libmfx"
2748 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2749 hevc_qsv_encoder_deps="libmfx"
2750 hevc_qsv_encoder_select="qsvenc"
2751 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2752 hevc_vaapi_encoder_select="vaapi_encode golomb"
2753 mjpeg_cuvid_decoder_deps="cuda cuvid"
2754 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2755 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2756 mpeg1_cuvid_decoder_deps="cuda cuvid"
2757 mpeg1_vdpau_decoder_deps="vdpau"
2758 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2759 mpeg2_crystalhd_decoder_select="crystalhd"
2760 mpeg2_cuvid_decoder_deps="cuda cuvid"
2761 mpeg2_mmal_decoder_deps="mmal"
2762 mpeg2_qsv_decoder_deps="libmfx"
2763 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2764 mpeg2_qsv_encoder_deps="libmfx"
2765 mpeg2_qsv_encoder_select="qsvenc"
2766 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2767 mpeg2_vaapi_encoder_select="vaapi_encode"
2768 mpeg4_crystalhd_decoder_select="crystalhd"
2769 mpeg4_cuvid_decoder_deps="cuda cuvid"
2770 mpeg4_mediacodec_decoder_deps="mediacodec"
2771 mpeg4_mmal_decoder_deps="mmal"
2772 mpeg4_omx_encoder_deps="omx"
2773 mpeg4_vdpau_decoder_deps="vdpau"
2774 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2775 mpeg_vdpau_decoder_deps="vdpau"
2776 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2777 msmpeg4_crystalhd_decoder_select="crystalhd"
2778 nvenc_h264_encoder_deps="nvenc"
2779 nvenc_hevc_encoder_deps="nvenc"
2780 vc1_crystalhd_decoder_select="crystalhd"
2781 vc1_cuvid_decoder_deps="cuda cuvid"
2782 vc1_mmal_decoder_deps="mmal"
2783 vc1_vdpau_decoder_deps="vdpau"
2784 vc1_vdpau_decoder_select="vc1_decoder"
2785 vp8_cuvid_decoder_deps="cuda cuvid"
2786 vp8_mediacodec_decoder_deps="mediacodec"
2787 vp8_qsv_decoder_deps="libmfx"
2788 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2789 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2790 vp8_vaapi_encoder_select="vaapi_encode"
2791 vp9_cuvid_decoder_deps="cuda cuvid"
2792 vp9_mediacodec_decoder_deps="mediacodec"
2793 wmv3_crystalhd_decoder_select="crystalhd"
2794 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2795
2796 # parsers
2797 h264_parser_select="golomb h264dsp h264parse"
2798 hevc_parser_select="golomb"
2799 mpegvideo_parser_select="mpegvideo"
2800 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2801 vc1_parser_select="vc1dsp"
2802
2803 # bitstream_filters
2804 mjpeg2jpeg_bsf_select="jpegtables"
2805
2806 # external libraries
2807 aac_at_decoder_deps="audiotoolbox"
2808 ac3_at_decoder_deps="audiotoolbox"
2809 ac3_at_decoder_select="ac3_parser"
2810 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2811 alac_at_decoder_deps="audiotoolbox"
2812 amr_nb_at_decoder_deps="audiotoolbox"
2813 avisynth_deps_any="dlopen LoadLibrary"
2814 avisynth_demuxer_deps="avisynth"
2815 avisynth_demuxer_select="riffdec"
2816 eac3_at_decoder_deps="audiotoolbox"
2817 eac3_at_decoder_select="ac3_parser"
2818 gsm_ms_at_decoder_deps="audiotoolbox"
2819 ilbc_at_decoder_deps="audiotoolbox"
2820 mp1_at_decoder_deps="audiotoolbox"
2821 mp2_at_decoder_deps="audiotoolbox"
2822 mp3_at_decoder_deps="audiotoolbox"
2823 pcm_alaw_at_decoder_deps="audiotoolbox"
2824 pcm_mulaw_at_decoder_deps="audiotoolbox"
2825 qdmc_at_decoder_deps="audiotoolbox"
2826 qdm2_at_decoder_deps="audiotoolbox"
2827 aac_at_encoder_deps="audiotoolbox"
2828 aac_at_encoder_select="audio_frame_queue"
2829 alac_at_encoder_deps="audiotoolbox"
2830 alac_at_encoder_select="audio_frame_queue"
2831 ilbc_at_encoder_deps="audiotoolbox"
2832 ilbc_at_encoder_select="audio_frame_queue"
2833 pcm_alaw_at_encoder_deps="audiotoolbox"
2834 pcm_alaw_at_encoder_select="audio_frame_queue"
2835 pcm_mulaw_at_encoder_deps="audiotoolbox"
2836 pcm_mulaw_at_encoder_select="audio_frame_queue"
2837 chromaprint_muxer_deps="chromaprint"
2838 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2839 libcelt_decoder_deps="libcelt"
2840 libfdk_aac_decoder_deps="libfdk_aac"
2841 libfdk_aac_encoder_deps="libfdk_aac"
2842 libfdk_aac_encoder_select="audio_frame_queue"
2843 libgme_demuxer_deps="libgme"
2844 libgsm_decoder_deps="libgsm"
2845 libgsm_encoder_deps="libgsm"
2846 libgsm_ms_decoder_deps="libgsm"
2847 libgsm_ms_encoder_deps="libgsm"
2848 libilbc_decoder_deps="libilbc"
2849 libilbc_encoder_deps="libilbc"
2850 libkvazaar_encoder_deps="libkvazaar"
2851 libmodplug_demuxer_deps="libmodplug"
2852 libmp3lame_encoder_deps="libmp3lame"
2853 libmp3lame_encoder_select="audio_frame_queue"
2854 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2855 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2856 libopencore_amrnb_encoder_select="audio_frame_queue"
2857 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2858 libopenh264_decoder_deps="libopenh264"
2859 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2860 libopenh264_encoder_deps="libopenh264"
2861 libopenjpeg_decoder_deps="libopenjpeg"
2862 libopenjpeg_encoder_deps="libopenjpeg"
2863 libopenmpt_demuxer_deps="libopenmpt"
2864 libopus_decoder_deps="libopus"
2865 libopus_encoder_deps="libopus"
2866 libopus_encoder_select="audio_frame_queue"
2867 libschroedinger_decoder_deps="libschroedinger"
2868 libschroedinger_encoder_deps="libschroedinger"
2869 libshine_encoder_deps="libshine"
2870 libshine_encoder_select="audio_frame_queue"
2871 libspeex_decoder_deps="libspeex"
2872 libspeex_encoder_deps="libspeex"
2873 libspeex_encoder_select="audio_frame_queue"
2874 libtheora_encoder_deps="libtheora"
2875 libtwolame_encoder_deps="libtwolame"
2876 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2877 libvorbis_decoder_deps="libvorbis"
2878 libvorbis_encoder_deps="libvorbis"
2879 libvorbis_encoder_select="audio_frame_queue"
2880 libvpx_vp8_decoder_deps="libvpx"
2881 libvpx_vp8_encoder_deps="libvpx"
2882 libvpx_vp9_decoder_deps="libvpx"
2883 libvpx_vp9_encoder_deps="libvpx"
2884 libwavpack_encoder_deps="libwavpack"
2885 libwebp_encoder_deps="libwebp"
2886 libwebp_anim_encoder_deps="libwebp"
2887 libx262_encoder_deps="libx262"
2888 libx264_encoder_deps="libx264"
2889 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2890 libx264rgb_encoder_select="libx264_encoder"
2891 libx265_encoder_deps="libx265"
2892 libxavs_encoder_deps="libxavs"
2893 libxvid_encoder_deps="libxvid"
2894 libzvbi_teletext_decoder_deps="libzvbi"
2895 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2896 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2897 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2898 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2899 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2900
2901 # demuxers / muxers
2902 ac3_demuxer_select="ac3_parser"
2903 aiff_muxer_select="iso_media"
2904 asf_demuxer_select="riffdec"
2905 asf_o_demuxer_select="riffdec"
2906 asf_muxer_select="riffenc"
2907 asf_stream_muxer_select="asf_muxer"
2908 avi_demuxer_select="iso_media riffdec exif"
2909 avi_muxer_select="riffenc"
2910 caf_demuxer_select="iso_media riffdec"
2911 caf_muxer_select="iso_media"
2912 dash_muxer_select="mp4_muxer"
2913 dirac_demuxer_select="dirac_parser"
2914 dts_demuxer_select="dca_parser"
2915 dtshd_demuxer_select="dca_parser"
2916 dv_demuxer_select="dvprofile"
2917 dv_muxer_select="dvprofile"
2918 dxa_demuxer_select="riffdec"
2919 eac3_demuxer_select="ac3_parser"
2920 f4v_muxer_select="mov_muxer"
2921 fifo_muxer_deps="threads"
2922 flac_demuxer_select="flac_parser"
2923 hds_muxer_select="flv_muxer"
2924 hls_muxer_select="mpegts_muxer"
2925 image2_alias_pix_demuxer_select="image2_demuxer"
2926 image2_brender_pix_demuxer_select="image2_demuxer"
2927 ipod_muxer_select="mov_muxer"
2928 ismv_muxer_select="mov_muxer"
2929 libnut_demuxer_deps="libnut"
2930 libnut_muxer_deps="libnut"
2931 matroska_audio_muxer_select="matroska_muxer"
2932 matroska_demuxer_select="iso_media riffdec"
2933 matroska_demuxer_suggest="bzlib lzo zlib"
2934 matroska_muxer_select="iso_media riffenc"
2935 mmf_muxer_select="riffenc"
2936 mov_demuxer_select="iso_media riffdec"
2937 mov_demuxer_suggest="zlib"
2938 mov_muxer_select="iso_media riffenc rtpenc_chain"
2939 mp3_demuxer_select="mpegaudio_parser"
2940 mp4_muxer_select="mov_muxer"
2941 mpegts_demuxer_select="iso_media"
2942 mpegts_muxer_select="adts_muxer latm_muxer"
2943 mpegtsraw_demuxer_select="mpegts_demuxer"
2944 mxf_d10_muxer_select="mxf_muxer"
2945 mxf_opatom_muxer_select="mxf_muxer"
2946 nut_muxer_select="riffenc"
2947 nuv_demuxer_select="riffdec"
2948 oga_muxer_select="ogg_muxer"
2949 ogg_demuxer_select="dirac_parse"
2950 ogv_muxer_select="ogg_muxer"
2951 opus_muxer_select="ogg_muxer"
2952 psp_muxer_select="mov_muxer"
2953 rtp_demuxer_select="sdp_demuxer"
2954 rtp_muxer_select="golomb"
2955 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2956 rtsp_demuxer_select="http_protocol rtpdec"
2957 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2958 sap_demuxer_select="sdp_demuxer"
2959 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2960 sdp_demuxer_select="rtpdec"
2961 smoothstreaming_muxer_select="ismv_muxer"
2962 spdif_muxer_select="aac_parser"
2963 spx_muxer_select="ogg_muxer"
2964 swf_demuxer_suggest="zlib"
2965 tak_demuxer_select="tak_parser"
2966 tg2_muxer_select="mov_muxer"
2967 tgp_muxer_select="mov_muxer"
2968 vobsub_demuxer_select="mpegps_demuxer"
2969 w64_demuxer_select="wav_demuxer"
2970 w64_muxer_select="wav_muxer"
2971 wav_demuxer_select="riffdec"
2972 wav_muxer_select="riffenc"
2973 webm_muxer_select="iso_media riffenc"
2974 webm_dash_manifest_demuxer_select="matroska_demuxer"
2975 wtv_demuxer_select="mpegts_demuxer riffdec"
2976 wtv_muxer_select="mpegts_muxer riffenc"
2977 xmv_demuxer_select="riffdec"
2978 xwma_demuxer_select="riffdec"
2979
2980 # indevs / outdevs
2981 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2982 alsa_outdev_deps="alsa_asoundlib_h"
2983 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2984 avfoundation_indev_select="avfoundation"
2985 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2986 caca_outdev_deps="libcaca"
2987 decklink_indev_deps="decklink pthreads"
2988 decklink_indev_extralibs="-lstdc++"
2989 decklink_outdev_deps="decklink pthreads"
2990 decklink_outdev_extralibs="-lstdc++"
2991 dshow_indev_deps="IBaseFilter"
2992 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2993 dv1394_indev_deps="dv1394"
2994 dv1394_indev_select="dv_demuxer"
2995 fbdev_indev_deps="linux_fb_h"
2996 fbdev_outdev_deps="linux_fb_h"
2997 gdigrab_indev_deps="CreateDIBSection"
2998 gdigrab_indev_extralibs="-lgdi32"
2999 gdigrab_indev_select="bmp_decoder"
3000 iec61883_indev_deps="libiec61883"
3001 jack_indev_deps="jack_jack_h"
3002 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3003 lavfi_indev_deps="avfilter"
3004 libcdio_indev_deps="libcdio"
3005 libdc1394_indev_deps="libdc1394"
3006 libv4l2_indev_deps="libv4l2"
3007 openal_indev_deps="openal"
3008 opengl_outdev_deps="opengl"
3009 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3010 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3011 pulse_indev_deps="libpulse"
3012 pulse_outdev_deps="libpulse"
3013 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3014 qtkit_indev_select="qtkit"
3015 sdl2_outdev_deps="sdl2"
3016 sndio_indev_deps="sndio_h"
3017 sndio_outdev_deps="sndio_h"
3018 v4l_indev_deps="linux_videodev_h"
3019 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3020 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3021 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3022 vfwcap_indev_extralibs="-lavicap32"
3023 xcbgrab_indev_deps="libxcb"
3024 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3025 xv_outdev_extralibs="-lXv -lX11 -lXext"
3026
3027 # protocols
3028 async_protocol_deps="threads"
3029 bluray_protocol_deps="libbluray"
3030 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3031 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3032 ffrtmpcrypt_protocol_select="tcp_protocol"
3033 ffrtmphttp_protocol_deps="!librtmp_protocol"
3034 ffrtmphttp_protocol_select="http_protocol"
3035 ftp_protocol_select="tcp_protocol"
3036 gopher_protocol_select="network"
3037 http_protocol_select="tcp_protocol"
3038 httpproxy_protocol_select="tcp_protocol"
3039 https_protocol_select="tls_protocol"
3040 icecast_protocol_select="http_protocol"
3041 librtmp_protocol_deps="librtmp"
3042 librtmpe_protocol_deps="librtmp"
3043 librtmps_protocol_deps="librtmp"
3044 librtmpt_protocol_deps="librtmp"
3045 librtmpte_protocol_deps="librtmp"
3046 libsmbclient_protocol_deps="libsmbclient gplv3"
3047 libssh_protocol_deps="libssh"
3048 mmsh_protocol_select="http_protocol"
3049 mmst_protocol_select="network"
3050 rtmp_protocol_deps="!librtmp_protocol"
3051 rtmp_protocol_select="tcp_protocol"
3052 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3053 rtmps_protocol_deps="!librtmp_protocol"
3054 rtmps_protocol_select="tls_protocol"
3055 rtmpt_protocol_select="ffrtmphttp_protocol"
3056 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3057 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3058 rtp_protocol_select="udp_protocol"
3059 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3060 sctp_protocol_select="network"
3061 srtp_protocol_select="rtp_protocol srtp"
3062 tcp_protocol_select="network"
3063 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3064 tls_gnutls_protocol_select="tcp_protocol"
3065 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3066 tls_openssl_protocol_select="tcp_protocol"
3067 tls_schannel_protocol_deps="schannel"
3068 tls_schannel_protocol_select="tcp_protocol"
3069 tls_securetransport_protocol_deps="securetransport"
3070 tls_securetransport_protocol_select="tcp_protocol"
3071 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3072 udp_protocol_select="network"
3073 udplite_protocol_select="network"
3074 unix_protocol_deps="sys_un_h"
3075 unix_protocol_select="network"
3076
3077 # filters
3078 afftfilt_filter_deps="avcodec"
3079 afftfilt_filter_select="fft"
3080 amovie_filter_deps="avcodec avformat"
3081 aresample_filter_deps="swresample"
3082 ass_filter_deps="libass"
3083 atempo_filter_deps="avcodec"
3084 atempo_filter_select="rdft"
3085 azmq_filter_deps="libzmq"
3086 blackframe_filter_deps="gpl"
3087 boxblur_filter_deps="gpl"
3088 bs2b_filter_deps="libbs2b"
3089 colormatrix_filter_deps="gpl"
3090 cover_rect_filter_deps="avcodec avformat gpl"
3091 cropdetect_filter_deps="gpl"
3092 deinterlace_qsv_filter_deps="libmfx"
3093 deinterlace_vaapi_filter_deps="vaapi"
3094 delogo_filter_deps="gpl"
3095 deshake_filter_select="pixelutils"
3096 drawtext_filter_deps="libfreetype"
3097 eq_filter_deps="gpl"
3098 fftfilt_filter_deps="avcodec"
3099 fftfilt_filter_select="rdft"
3100 find_rect_filter_deps="avcodec avformat gpl"
3101 firequalizer_filter_deps="avcodec"
3102 firequalizer_filter_select="rdft"
3103 flite_filter_deps="libflite"
3104 framerate_filter_select="pixelutils"
3105 frei0r_filter_deps="frei0r dlopen"
3106 frei0r_src_filter_deps="frei0r dlopen"
3107 fspp_filter_deps="gpl"
3108 geq_filter_deps="gpl"
3109 histeq_filter_deps="gpl"
3110 hqdn3d_filter_deps="gpl"
3111 interlace_filter_deps="gpl"
3112 kerndeint_filter_deps="gpl"
3113 ladspa_filter_deps="ladspa dlopen"
3114 mcdeint_filter_deps="avcodec gpl"
3115 movie_filter_deps="avcodec avformat"
3116 mpdecimate_filter_deps="gpl"
3117 mpdecimate_filter_select="pixelutils"
3118 mptestsrc_filter_deps="gpl"
3119 negate_filter_deps="lut_filter"
3120 nnedi_filter_deps="gpl"
3121 ocr_filter_deps="libtesseract"
3122 ocv_filter_deps="libopencv"
3123 owdenoise_filter_deps="gpl"
3124 pan_filter_deps="swresample"
3125 perspective_filter_deps="gpl"
3126 phase_filter_deps="gpl"
3127 pp7_filter_deps="gpl"
3128 pp_filter_deps="gpl postproc"
3129 pullup_filter_deps="gpl"
3130 removelogo_filter_deps="avcodec avformat swscale"
3131 repeatfields_filter_deps="gpl"
3132 resample_filter_deps="avresample"
3133 rubberband_filter_deps="librubberband"
3134 sab_filter_deps="gpl swscale"
3135 scale2ref_filter_deps="swscale"
3136 scale_filter_deps="swscale"
3137 scale_qsv_filter_deps="libmfx"
3138 select_filter_select="pixelutils"
3139 showcqt_filter_deps="avcodec avformat swscale"
3140 showcqt_filter_select="fft"
3141 showfreqs_filter_deps="avcodec"
3142 showfreqs_filter_select="fft"
3143 showspectrum_filter_deps="avcodec"
3144 showspectrum_filter_select="fft"
3145 showspectrumpic_filter_deps="avcodec"
3146 showspectrumpic_filter_select="fft"
3147 signature_filter_deps="gpl avcodec avformat"
3148 smartblur_filter_deps="gpl swscale"
3149 sofalizer_filter_deps="netcdf avcodec"
3150 sofalizer_filter_select="fft"
3151 spectrumsynth_filter_deps="avcodec"
3152 spectrumsynth_filter_select="fft"
3153 spp_filter_deps="gpl avcodec"
3154 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3155 stereo3d_filter_deps="gpl"
3156 subtitles_filter_deps="avformat avcodec libass"
3157 super2xsai_filter_deps="gpl"
3158 pixfmts_super2xsai_test_deps="super2xsai_filter"
3159 tinterlace_filter_deps="gpl"
3160 tinterlace_merge_test_deps="tinterlace_filter"
3161 tinterlace_pad_test_deps="tinterlace_filter"
3162 uspp_filter_deps="gpl avcodec"
3163 vaguedenoiser_filter_deps="gpl"
3164 vidstabdetect_filter_deps="libvidstab"
3165 vidstabtransform_filter_deps="libvidstab"
3166 zmq_filter_deps="libzmq"
3167 zoompan_filter_deps="swscale"
3168 zscale_filter_deps="libzimg"
3169 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3170
3171 # examples
3172 avio_dir_cmd_deps="avformat avutil"
3173 avio_reading_deps="avformat avcodec avutil"
3174 decode_audio_example_deps="avcodec avutil"
3175 decode_video_example_deps="avcodec avutil"
3176 demuxing_decoding_example_deps="avcodec avformat avutil"
3177 encode_audio_example_deps="avcodec avutil"
3178 encode_video_example_deps="avcodec avutil"
3179 extract_mvs_example_deps="avcodec avformat avutil"
3180 filter_audio_example_deps="avfilter avutil"
3181 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3182 filtering_video_example_deps="avfilter avcodec avformat avutil"
3183 http_multiclient_example_deps="avformat avutil fork"
3184 metadata_example_deps="avformat avutil"
3185 muxing_example_deps="avcodec avformat avutil swscale"
3186 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3187 remuxing_example_deps="avcodec avformat avutil"
3188 resampling_audio_example_deps="avutil swresample"
3189 scaling_video_example_deps="avutil swscale"
3190 transcode_aac_example_deps="avcodec avformat swresample"
3191 transcoding_example_deps="avfilter avcodec avformat avutil"
3192
3193 # libraries, in linking order
3194 avcodec_deps="avutil"
3195 avdevice_deps="avformat avcodec avutil"
3196 avfilter_deps="avutil"
3197 avformat_deps="avcodec avutil"
3198 avresample_deps="avutil"
3199 postproc_deps="avutil gpl"
3200 swresample_deps="avutil"
3201 swscale_deps="avutil"
3202
3203 # programs
3204 ffmpeg_deps="avcodec avfilter avformat swresample"
3205 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3206                null_filter
3207                trim_filter"
3208 ffplay_deps="avcodec avformat swscale swresample sdl2"
3209 ffplay_libs='$sdl2_libs'
3210 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3211 ffprobe_deps="avcodec avformat"
3212 ffserver_deps="avformat fork sarestart"
3213 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3214
3215 # documentation
3216 podpages_deps="perl"
3217 manpages_deps="perl pod2man"
3218 htmlpages_deps="perl"
3219 htmlpages_deps_any="makeinfo_html texi2html"
3220 txtpages_deps="perl makeinfo"
3221 doc_deps_any="manpages htmlpages podpages txtpages"
3222
3223 # default parameters
3224
3225 logfile="config.log"
3226
3227 # installation paths
3228 prefix_default="/usr/local"
3229 bindir_default='${prefix}/bin'
3230 datadir_default='${prefix}/share/ffmpeg'
3231 docdir_default='${prefix}/share/doc/ffmpeg'
3232 incdir_default='${prefix}/include'
3233 libdir_default='${prefix}/lib'
3234 mandir_default='${prefix}/share/man'
3235
3236 # toolchain
3237 ar_default="ar"
3238 cc_default="gcc"
3239 cxx_default="g++"
3240 host_cc_default="gcc"
3241 cp_f="cp -f"
3242 doxygen_default="doxygen"
3243 install="install"
3244 ln_s_default="ln -s -f"
3245 nm_default="nm -g"
3246 objformat="elf"
3247 pkg_config_default=pkg-config
3248 ranlib_default="ranlib"
3249 strip_default="strip"
3250 version_script='--version-script'
3251 yasmexe_default="yasm"
3252 windres_default="windres"
3253
3254 # OS
3255 target_os_default=$(tolower $(uname -s))
3256 host_os=$target_os_default
3257
3258 # machine
3259 if test "$target_os_default" = aix; then
3260     arch_default=$(uname -p)
3261     strip_default="strip -X32_64"
3262 else
3263     arch_default=$(uname -m)
3264 fi
3265 cpu="generic"
3266 intrinsics="none"
3267
3268 # configurable options
3269 enable $PROGRAM_LIST
3270 enable $DOCUMENT_LIST
3271 enable $EXAMPLE_LIST
3272 enable $(filter_out avresample $LIBRARY_LIST)
3273 enable stripping
3274
3275 enable asm
3276 enable debug
3277 enable doc
3278 enable faan faandct faanidct
3279 enable optimizations
3280 enable runtime_cpudetect
3281 enable safe_bitstream_reader
3282 enable static
3283 enable swscale_alpha
3284 enable valgrind_backtrace
3285
3286 sws_max_filter_size_default=256
3287 set_default sws_max_filter_size
3288
3289 # build settings
3290 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3291 LIBPREF="lib"
3292 LIBSUF=".a"
3293 FULLNAME='$(NAME)$(BUILDSUF)'
3294 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3295 SLIBPREF="lib"
3296 SLIBSUF=".so"
3297 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3298 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3299 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3300 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3301 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3302 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3303 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3304
3305 asflags_filter=echo
3306 cflags_filter=echo
3307 ldflags_filter=echo
3308
3309 AS_C='-c'
3310 AS_O='-o $@'
3311 CC_C='-c'
3312 CC_E='-E -o $@'
3313 CC_O='-o $@'
3314 CXX_C='-c'
3315 CXX_O='-o $@'
3316 OBJCC_C='-c'
3317 OBJCC_E='-E -o $@'
3318 OBJCC_O='-o $@'
3319 LD_O='-o $@'
3320 LD_LIB='-l%'
3321 LD_PATH='-L'
3322 HOSTCC_C='-c'
3323 HOSTCC_E='-E -o $@'
3324 HOSTCC_O='-o $@'
3325 HOSTLD_O='-o $@'
3326
3327 host_libs='-lm'
3328 host_cflags_filter=echo
3329 host_ldflags_filter=echo
3330
3331 target_path='$(CURDIR)'
3332
3333 # since the object filename is not given with the -MM flag, the compiler
3334 # is only able to print the basename, and we must add the path ourselves
3335 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3336 DEPFLAGS='-MM'
3337
3338 # find source path
3339 if test -f configure; then
3340     source_path=.
3341 else
3342     source_path=$(cd $(dirname "$0"); pwd)
3343     case "$source_path" in
3344         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3345     esac
3346     test -e "$source_path/config.h" &&
3347         die "Out of tree builds are impossible with config.h in source dir."
3348 fi
3349
3350 for v in "$@"; do
3351     r=${v#*=}
3352     l=${v%"$r"}
3353     r=$(sh_quote "$r")
3354     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3355 done
3356
3357 find_things(){
3358     thing=$1
3359     pattern=$2
3360     file=$source_path/$3
3361     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3362 }
3363
3364 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3365 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3366 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3367 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3368 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3369 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3370 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3371 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3372 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3373
3374 find_things_extern(){
3375     thing=$1
3376     pattern=$2
3377     file=$source_path/$3
3378     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3379 }
3380
3381 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3382 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3383
3384 ALL_COMPONENTS="
3385     $BSF_LIST
3386     $DECODER_LIST
3387     $DEMUXER_LIST
3388     $ENCODER_LIST
3389     $FILTER_LIST
3390     $HWACCEL_LIST
3391     $INDEV_LIST
3392     $MUXER_LIST
3393     $OUTDEV_LIST
3394     $PARSER_LIST
3395     $PROTOCOL_LIST
3396 "
3397
3398 for n in $COMPONENT_LIST; do
3399     v=$(toupper ${n%s})_LIST
3400     eval enable \$$v
3401     eval ${n}_if_any="\$$v"
3402 done
3403
3404 enable $ARCH_EXT_LIST
3405
3406 die_unknown(){
3407     echo "Unknown option \"$1\"."
3408     echo "See $0 --help for available options."
3409     exit 1
3410 }
3411
3412 print_in_columns() {
3413     cols=$(expr $ncols / 24)
3414     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3415 }
3416
3417 show_list() {
3418     suffix=_$1
3419     shift
3420     echo $* | sed s/$suffix//g | print_in_columns
3421     exit 0
3422 }
3423
3424 rand_list(){
3425     IFS=', '
3426     set -- $*
3427     unset IFS
3428     for thing; do
3429         comp=${thing%:*}
3430         prob=${thing#$comp}
3431         prob=${prob#:}
3432         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3433         echo "prob ${prob:-0.5}"
3434         printf '%s\n' $comp
3435     done
3436 }
3437
3438 do_random(){
3439     action=$1
3440     shift
3441     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3442     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3443 }
3444
3445 for opt do
3446     optval="${opt#*=}"
3447     case "$opt" in
3448         --extra-ldflags=*)
3449             add_ldflags $optval
3450         ;;
3451         --extra-ldexeflags=*)
3452             add_ldexeflags $optval
3453         ;;
3454         --extra-ldlibflags=*)
3455             add_ldlibflags $optval
3456         ;;
3457         --extra-libs=*)
3458             add_extralibs $optval
3459         ;;
3460         --disable-devices)
3461             disable $INDEV_LIST $OUTDEV_LIST
3462         ;;
3463         --enable-debug=*)
3464             debuglevel="$optval"
3465         ;;
3466         --disable-programs)
3467             disable $PROGRAM_LIST
3468         ;;
3469         --disable-everything)
3470             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3471         ;;
3472         --disable-all)
3473             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3474             disable $LIBRARY_LIST $PROGRAM_LIST doc
3475             enable avutil
3476         ;;
3477         --enable-random|--disable-random)
3478             action=${opt%%-random}
3479             do_random ${action#--} $COMPONENT_LIST
3480         ;;
3481         --enable-random=*|--disable-random=*)
3482             action=${opt%%-random=*}
3483             do_random ${action#--} $optval
3484         ;;
3485         --enable-*=*|--disable-*=*)
3486             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3487             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3488             eval list=\$$(toupper $thing)_LIST
3489             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3490             list=$(filter "$name" $list)
3491             [ "$list" = "" ] && warn "Option $opt did not match anything"
3492             $action $list
3493         ;;
3494         --enable-?*|--disable-?*)
3495             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3496             if is_in $option $COMPONENT_LIST; then
3497                 test $action = disable && action=unset
3498                 eval $action \$$(toupper ${option%s})_LIST
3499             elif is_in $option $CMDLINE_SELECT; then
3500                 $action $option
3501             else
3502                 die_unknown $opt
3503             fi
3504         ;;
3505         --list-*)
3506             NAME="${opt#--list-}"
3507             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3508             NAME=${NAME%s}
3509             eval show_list $NAME \$$(toupper $NAME)_LIST
3510         ;;
3511         --help|-h) show_help
3512         ;;
3513         --quiet|-q) quiet=yes
3514         ;;
3515         --fatal-warnings) enable fatal_warnings
3516         ;;
3517         *)
3518             optname="${opt%%=*}"
3519             optname="${optname#--}"
3520             optname=$(echo "$optname" | sed 's/-/_/g')
3521             if is_in $optname $CMDLINE_SET; then
3522                 eval $optname='$optval'
3523             elif is_in $optname $CMDLINE_APPEND; then
3524                 append $optname "$optval"
3525             else
3526                 die_unknown $opt
3527             fi
3528         ;;
3529     esac
3530 done
3531
3532 for e in $env; do
3533     eval "export $e"
3534 done
3535
3536 # Mark specifically enabled, but normally autodetected libraries as requested.
3537 for lib in $AUTODETECT_LIBS; do
3538     enabled $lib && request $lib
3539 done
3540
3541 # Enable platform codecs by default.
3542 enable_weak audiotoolbox
3543
3544 # Enable hwaccels by default.
3545 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3546 enable_weak xlib
3547
3548 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3549
3550 disabled logging && logfile=/dev/null
3551
3552 die_license_disabled() {
3553     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3554 }
3555
3556 die_license_disabled_gpl() {
3557     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3558 }
3559
3560 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3561 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3562
3563 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3564 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3565
3566 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3567
3568 # Disable all the library-specific components if the library itself
3569 # is disabled, see AVCODEC_LIST and following _LIST variables.
3570
3571 disable_components(){
3572     disabled ${1} && disable $(
3573         eval components="\$$(toupper ${1})_COMPONENTS"
3574         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3575     )
3576 }
3577
3578 map 'disable_components $v' $LIBRARY_LIST
3579
3580 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3581 set >> $logfile
3582
3583 test -n "$valgrind" && toolchain="valgrind-memcheck"
3584
3585 case "$toolchain" in
3586     *-asan)
3587         cc_default="${toolchain%-asan}"
3588         add_cflags  -fsanitize=address
3589         add_ldflags -fsanitize=address
3590     ;;
3591     *-msan)
3592         cc_default="${toolchain%-msan}"
3593         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3594         add_ldflags -fsanitize=memory
3595     ;;
3596     *-tsan)
3597         cc_default="${toolchain%-tsan}"
3598         add_cflags  -fsanitize=thread -fPIE
3599         add_ldflags -fsanitize=thread -pie
3600         case "$toolchain" in
3601             gcc-tsan)
3602                 add_cflags  -fPIC
3603                 add_ldflags -fPIC
3604                 ;;
3605         esac
3606     ;;
3607     *-usan)
3608         cc_default="${toolchain%-usan}"
3609         add_cflags  -fsanitize=undefined
3610         add_ldflags -fsanitize=undefined
3611     ;;
3612     valgrind-*)
3613         target_exec_default="valgrind"
3614         case "$toolchain" in
3615             valgrind-massif)
3616                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3617                 ;;
3618             valgrind-memcheck)
3619                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3620                 ;;
3621         esac
3622     ;;
3623     msvc)
3624         # Check whether the current MSVC version needs the C99 converter.
3625         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3626         # support enough of C99 to build ffmpeg. Default to the new
3627         # behaviour if the regexp was unable to match anything, since this
3628         # successfully parses the version number of existing supported
3629         # versions that require the converter (MSVC 2010 and 2012).
3630         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3631         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3632             cc_default="cl"
3633         else
3634             cc_default="c99wrap cl"
3635         fi
3636         ld_default="$source_path/compat/windows/mslink"
3637         nm_default="dumpbin -symbols"
3638         ar_default="lib"
3639         case "$arch" in
3640         arm*)
3641             as_default="armasm"
3642             ;;
3643         esac
3644         target_os_default="win32"
3645         # Use a relative path for TMPDIR. This makes sure all the
3646         # ffconf temp files are written with a relative path, avoiding
3647         # issues with msys/win32 path conversion for MSVC parameters
3648         # such as -Fo<file> or -out:<file>.
3649         TMPDIR=.
3650     ;;
3651     icl)
3652         cc_default="icl"
3653         ld_default="xilink"
3654         nm_default="dumpbin -symbols"
3655         ar_default="xilib"
3656         target_os_default="win32"
3657         TMPDIR=.
3658     ;;
3659     gcov)
3660         add_cflags  -fprofile-arcs -ftest-coverage
3661         add_ldflags -fprofile-arcs -ftest-coverage
3662     ;;
3663     llvm-cov)
3664         add_cflags -fprofile-arcs -ftest-coverage
3665         add_ldflags --coverage
3666     ;;
3667     hardened)
3668         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3669         add_cflags   -fno-strict-overflow -fstack-protector-all
3670         add_ldflags  -Wl,-z,relro -Wl,-z,now
3671         add_cflags   -fPIE
3672         add_ldexeflags -fPIE -pie
3673     ;;
3674     ?*)
3675         die "Unknown toolchain $toolchain"
3676     ;;
3677 esac
3678
3679 test -n "$cross_prefix" && enable cross_compile
3680
3681 if enabled cross_compile; then
3682     test -n "$arch" && test -n "$target_os" ||
3683         die "Must specify target arch and OS when cross-compiling"
3684 fi
3685
3686 ar_default="${cross_prefix}${ar_default}"
3687 cc_default="${cross_prefix}${cc_default}"
3688 cxx_default="${cross_prefix}${cxx_default}"
3689 nm_default="${cross_prefix}${nm_default}"
3690 pkg_config_default="${cross_prefix}${pkg_config_default}"
3691 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3692     ranlib_default="${cross_prefix}${ranlib_default} -D"
3693 else
3694     ranlib_default="${cross_prefix}${ranlib_default}"
3695 fi
3696 strip_default="${cross_prefix}${strip_default}"
3697 windres_default="${cross_prefix}${windres_default}"
3698
3699 sysinclude_default="${sysroot}/usr/include"
3700
3701 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3702     target_exec target_os yasmexe
3703 enabled cross_compile || host_cc_default=$cc
3704 set_default host_cc
3705
3706 pkg_config_fail_message=""
3707 if ! $pkg_config --version >/dev/null 2>&1; then
3708     warn "$pkg_config not found, library detection may fail."
3709     pkg_config=false
3710 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3711     pkg_config_fail_message="
3712 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3713 fi
3714
3715 if test $doxygen != $doxygen_default && \
3716   ! $doxygen --version >/dev/null 2>&1; then
3717     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3718 fi
3719
3720 exesuf() {
3721     case $1 in
3722         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3723     esac
3724 }
3725
3726 EXESUF=$(exesuf $target_os)
3727 HOSTEXESUF=$(exesuf $host_os)
3728
3729 # set temporary file name
3730 : ${TMPDIR:=$TEMPDIR}
3731 : ${TMPDIR:=$TMP}
3732 : ${TMPDIR:=/tmp}
3733
3734 if [ -n "$tempprefix" ] ; then
3735     mktemp(){
3736         echo $tempprefix.${HOSTNAME}.${UID}
3737     }
3738 elif ! check_cmd mktemp -u XXXXXX; then
3739     # simple replacement for missing mktemp
3740     # NOT SAFE FOR GENERAL USE
3741     mktemp(){
3742         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3743     }
3744 fi
3745
3746 tmpfile(){
3747     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3748         (set -C; exec > $tmp) 2>/dev/null ||
3749         die "Unable to create temporary file in $TMPDIR."
3750     append TMPFILES $tmp
3751     eval $1=$tmp
3752 }
3753
3754 trap 'rm -f -- $TMPFILES' EXIT
3755
3756 tmpfile TMPASM .asm
3757 tmpfile TMPC   .c
3758 tmpfile TMPCPP .cpp
3759 tmpfile TMPE   $EXESUF
3760 tmpfile TMPH   .h
3761 tmpfile TMPM   .m
3762 tmpfile TMPO   .o
3763 tmpfile TMPS   .S
3764 tmpfile TMPSH  .sh
3765 tmpfile TMPV   .ver
3766
3767 unset -f mktemp
3768
3769 chmod +x $TMPE
3770
3771 # make sure we can execute files in $TMPDIR
3772 cat > $TMPSH 2>> $logfile <<EOF
3773 #! /bin/sh
3774 EOF
3775 chmod +x $TMPSH >> $logfile 2>&1
3776 if ! $TMPSH >> $logfile 2>&1; then
3777     cat <<EOF
3778 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3779 variable to another directory and make sure that it is not mounted noexec.
3780 EOF
3781     die "Sanity test failed."
3782 fi
3783
3784 armasm_flags(){
3785     for flag; do
3786         case $flag in
3787             # Filter out MSVC cl.exe options from cflags that shouldn't
3788             # be passed to gas-preprocessor
3789             -M[TD]*)                                            ;;
3790             *)                  echo $flag                      ;;
3791         esac
3792    done
3793 }
3794
3795 ccc_flags(){
3796     for flag; do
3797         case $flag in
3798             -std=c99)           echo -c99                       ;;
3799             -mcpu=*)            echo -arch ${flag#*=}           ;;
3800             -mieee)             echo -ieee                      ;;
3801             -O*|-fast)          echo $flag                      ;;
3802             -fno-math-errno)    echo -assume nomath_errno       ;;
3803             -g)                 echo -g3                        ;;
3804             -Wall)              echo -msg_enable level2         ;;
3805             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3806             -Wl,*)              echo $flag                      ;;
3807             -f*|-W*)                                            ;;
3808             *)                  echo $flag                      ;;
3809         esac
3810    done
3811 }
3812
3813 cparser_flags(){
3814     for flag; do
3815         case $flag in
3816             -Wno-switch)             echo -Wno-switch-enum ;;
3817             -Wno-format-zero-length) ;;
3818             -Wdisabled-optimization) ;;
3819             -Wno-pointer-sign)       echo -Wno-other ;;
3820             *)                       echo $flag ;;
3821         esac
3822     done
3823 }
3824
3825 msvc_common_flags(){
3826     for flag; do
3827         case $flag in
3828             # In addition to specifying certain flags under the compiler
3829             # specific filters, they must be specified here as well or else the
3830             # generic catch all at the bottom will print the original flag.
3831             -Wall)                ;;
3832             -std=c99)             ;;
3833             # Common flags
3834             -fomit-frame-pointer) ;;
3835             -g)                   echo -Z7 ;;
3836             -fno-math-errno)      ;;
3837             -fno-common)          ;;
3838             -fno-signed-zeros)    ;;
3839             -fPIC)                ;;
3840             -mthumb)              ;;
3841             -march=*)             ;;
3842             -lz)                  echo zlib.lib ;;
3843             -lavicap32)           echo vfw32.lib user32.lib ;;
3844             -lx264)               echo libx264.lib ;;
3845             -l*)                  echo ${flag#-l}.lib ;;
3846             -LARGEADDRESSAWARE)   echo $flag ;;
3847             -L*)                  echo -libpath:${flag#-L} ;;
3848             *)                    echo $flag ;;
3849         esac
3850     done
3851 }
3852
3853 msvc_flags(){
3854     msvc_common_flags "$@"
3855     for flag; do
3856         case $flag in
3857             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3858                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3859                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3860                                        -wd4307 \
3861                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3862         esac
3863     done
3864 }
3865
3866 icl_flags(){
3867     msvc_common_flags "$@"
3868     for flag; do
3869         case $flag in
3870             # Despite what Intel's documentation says -Wall, which is supported
3871             # on Windows, does enable remarks so disable them here.
3872             -Wall)                echo $flag -Qdiag-disable:remark ;;
3873             -std=c99)             echo -Qstd=c99 ;;
3874             -flto)                echo -ipo ;;
3875         esac
3876     done
3877 }
3878
3879 icc_flags(){
3880     for flag; do
3881         case $flag in
3882             -flto)                echo -ipo ;;
3883             *)                    echo $flag ;;
3884         esac
3885     done
3886 }
3887
3888 pgi_flags(){
3889     for flag; do
3890         case $flag in
3891             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3892             -fomit-frame-pointer) echo -Mnoframe ;;
3893             -g)                   echo -gopt ;;
3894             *)                    echo $flag ;;
3895         esac
3896     done
3897 }
3898
3899 suncc_flags(){
3900     for flag; do
3901         case $flag in
3902             -march=*|-mcpu=*)
3903                 case "${flag#*=}" in
3904                     native)                   echo -xtarget=native       ;;
3905                     v9|niagara)               echo -xarch=sparc          ;;
3906                     ultrasparc)               echo -xarch=sparcvis       ;;
3907                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3908                     i586|pentium)             echo -xchip=pentium        ;;
3909                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3910                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3911                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3912                     pentium4*)          echo -xtarget=pentium4           ;;
3913                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3914                     *-sse3)             echo -xarch=sse3                 ;;
3915                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3916                     bonnell)                   echo -xarch=ssse3         ;;
3917                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3918                     westmere)                  echo -xtarget=westmere    ;;
3919                     silvermont)                echo -xarch=sse4_2        ;;
3920                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3921                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3922                                                echo -xarch=avx           ;;
3923                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3924                     btver1)                    echo -xarch=amdsse4a      ;;
3925                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3926                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3927                     k8|opteron|athlon64|athlon-fx)
3928                                                echo -xarch=sse2a         ;;
3929                     athlon*)                   echo -xarch=pentium_proa  ;;
3930                 esac
3931                 ;;
3932             -std=c99)             echo -xc99              ;;
3933             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3934             -fPIC)                echo -KPIC -xcode=pic32 ;;
3935             -W*,*)                echo $flag              ;;
3936             -f*-*|-W*|-mimpure-text)                      ;;
3937             -shared)              echo -G                 ;;
3938             *)                    echo $flag              ;;
3939         esac
3940     done
3941 }
3942
3943 tms470_flags(){
3944     for flag; do
3945         case $flag in
3946             -march=*|-mcpu=*)
3947                 case "${flag#*=}" in
3948                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3949                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3950                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3951                     armv6*|arm11*)          echo -mv=6   ;;
3952                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3953                                             echo -mv=5e  ;;
3954                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3955                 esac
3956                 ;;
3957             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3958             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3959             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3960             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3961             -msoft-float)   echo --float_support=vfplib       ;;
3962             -O[0-3]|-mf=*)  echo $flag                        ;;
3963             -g)             echo -g -mn                       ;;
3964             -pds=*)         echo $flag                        ;;
3965             -D*|-I*)        echo $flag                        ;;
3966             --gcc|--abi=*)  echo $flag                        ;;
3967             -me)            echo $flag                        ;;
3968         esac
3969     done
3970 }
3971
3972 probe_cc(){
3973     pfx=$1
3974     _cc=$2
3975     first=$3
3976
3977     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3978     unset _ld_o _ldflags _ld_lib _ld_path
3979     unset _depflags _DEPCMD _DEPFLAGS
3980     _flags_filter=echo
3981
3982     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3983         true # no-op to avoid reading stdin in following checks
3984     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3985         _type=llvm_gcc
3986         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3987         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3988         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3989         _cflags_speed='-O3'
3990         _cflags_size='-Os'
3991     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3992         _type=gcc
3993         gcc_version=$($_cc --version | head -n1)
3994         gcc_basever=$($_cc -dumpversion)
3995         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3996         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3997         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3998         case $gcc_basever in
3999             2) ;;
4000             2.*) ;;
4001             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4002         esac
4003         if [ "$first" = true ]; then
4004             case $gcc_basever in
4005                 4.2*)
4006                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4007             esac
4008         fi
4009         _cflags_speed='-O3'
4010         _cflags_size='-Os'
4011     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4012         _type=icc
4013         _ident=$($_cc --version | head -n1)
4014         _depflags='-MMD'
4015         _cflags_speed='-O3'
4016         _cflags_size='-Os'
4017         _cflags_noopt='-O1'
4018         _flags_filter=icc_flags
4019     elif $_cc -v 2>&1 | grep -q xlc; then
4020         _type=xlc
4021         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4022         _cflags_speed='-O5'
4023         _cflags_size='-O5 -qcompact'
4024     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4025         _type=ccc
4026         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4027         _DEPFLAGS='-M'
4028         _cflags_speed='-fast'
4029         _cflags_size='-O1'
4030         _flags_filter=ccc_flags
4031     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4032         test -d "$sysroot" || die "No valid sysroot specified."
4033         _type=armcc
4034         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4035         armcc_conf="$PWD/armcc.conf"
4036         $_cc --arm_linux_configure                 \
4037              --arm_linux_config_file="$armcc_conf" \
4038              --configure_sysroot="$sysroot"        \
4039              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4040              die "Error creating armcc configuration file."
4041         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4042         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4043         as_default="${cross_prefix}gcc"
4044         _depflags='-MMD'
4045         _cflags_speed='-O3'
4046         _cflags_size='-Os'
4047     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4048         _type=tms470
4049         _ident=$($_cc -version | head -n1 | tr -s ' ')
4050         _flags='--gcc --abi=eabi -me'
4051         _cc_e='-ppl -fe=$@'
4052         _cc_o='-fe=$@'
4053         _depflags='-ppa -ppd=$(@:.o=.d)'
4054         _cflags_speed='-O3 -mf=5'
4055         _cflags_size='-O3 -mf=2'
4056         _flags_filter=tms470_flags
4057     elif $_cc -v 2>&1 | grep -q clang; then
4058         _type=clang
4059         _ident=$($_cc --version 2>/dev/null | head -n1)
4060         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4061         _cflags_speed='-O3'
4062         _cflags_size='-Oz'
4063     elif $_cc -V 2>&1 | grep -q Sun; then
4064         _type=suncc
4065         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4066         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4067         _DEPFLAGS='-xM1 -xc99'
4068         _ldflags='-std=c99'
4069         _cflags_speed='-O5'
4070         _cflags_size='-O5 -xspace'
4071         _flags_filter=suncc_flags
4072     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4073         _type=pathscale
4074         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4075         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4076         _cflags_speed='-O2'
4077         _cflags_size='-Os'
4078         _flags_filter='filter_out -Wdisabled-optimization'
4079     elif $_cc -v 2>&1 | grep -q Open64; then
4080         _type=open64
4081         _ident=$($_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|-Wtype-limits|-fno-signed-zeros'
4086     elif $_cc -V 2>&1 | grep -q Portland; then
4087         _type=pgi
4088         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4089         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4090         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4091         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4092         _cflags_noopt="-O"
4093         _flags_filter=pgi_flags
4094     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4095         _type=armasm
4096         _ident=$($_cc | head -n1)
4097         # 4509: "This form of conditional instruction is deprecated"
4098         _flags="-nologo -ignore 4509"
4099         _flags_filter=armasm_flags
4100     elif $_cc 2>&1 | grep -q Intel; then
4101         _type=icl
4102         _ident=$($_cc 2>&1 | head -n1)
4103         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4104         # Not only is O3 broken on 13.x+ but it is slower on all previous
4105         # versions (tested) as well.
4106         _cflags_speed="-O2"
4107         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4108         if $_cc 2>&1 | grep -q Linker; then
4109             _ld_o='-out:$@'
4110         else
4111             _ld_o='-Fe$@'
4112         fi
4113         _cc_o='-Fo$@'
4114         _cc_e='-P'
4115         _flags_filter=icl_flags
4116         _ld_lib='lib%.a'
4117         _ld_path='-libpath:'
4118         # -Qdiag-error to make icl error when seeing certain unknown arguments
4119         _flags='-nologo -Qdiag-error:4044,10157'
4120         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4121         # with MSVC which enables it by default.
4122         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4123         disable stripping
4124     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4125         # lld can emulate multiple different linkers; in ms link.exe mode,
4126         # the -? parameter gives the help output which contains an identifyable
4127         # string, while it gives an error in other modes.
4128         _type=lld-link
4129         # The link.exe mode doesn't have a switch for getting the version,
4130         # but we can force it back to gnu mode and get the version from there.
4131         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4132         _ld_o='-out:$@'
4133         _flags_filter=msvc_flags
4134         _ld_lib='lib%.a'
4135         _ld_path='-libpath:'
4136     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4137         _type=msvc
4138         _ident=$($_cc 2>&1 | head -n1)
4139         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4140         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4141         _cflags_speed="-O2"
4142         _cflags_size="-O1"
4143         if $_cc -nologo- 2>&1 | grep -q Linker; then
4144             _ld_o='-out:$@'
4145         else
4146             _ld_o='-Fe$@'
4147         fi
4148         _cc_o='-Fo$@'
4149         _cc_e='-P -Fi$@'
4150         _flags_filter=msvc_flags
4151         _ld_lib='lib%.a'
4152         _ld_path='-libpath:'
4153         _flags='-nologo'
4154         disable stripping
4155     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4156         _type=cparser
4157         _ident=$($_cc --version | head -n1)
4158         _depflags='-MMD'
4159         _cflags_speed='-O4'
4160         _cflags_size='-O2'
4161         _flags_filter=cparser_flags
4162     fi
4163
4164     eval ${pfx}_type=\$_type
4165     eval ${pfx}_ident=\$_ident
4166 }
4167
4168 set_ccvars(){
4169     eval ${1}_C=\${_cc_c-\${${1}_C}}
4170     eval ${1}_E=\${_cc_e-\${${1}_E}}
4171     eval ${1}_O=\${_cc_o-\${${1}_O}}
4172
4173     if [ -n "$_depflags" ]; then
4174         eval ${1}_DEPFLAGS=\$_depflags
4175     else
4176         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4177         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4178         eval DEP${1}FLAGS=\$_flags
4179     fi
4180 }
4181
4182 probe_cc cc "$cc" "true"
4183 cflags_filter=$_flags_filter
4184 cflags_speed=$_cflags_speed
4185 cflags_size=$_cflags_size
4186 cflags_noopt=$_cflags_noopt
4187 add_cflags $_flags $_cflags
4188 cc_ldflags=$_ldflags
4189 set_ccvars CC
4190
4191 probe_cc hostcc "$host_cc"
4192 host_cflags_filter=$_flags_filter
4193 add_host_cflags  $_flags $_cflags
4194 set_ccvars HOSTCC
4195
4196 test -n "$cc_type" && enable $cc_type ||
4197     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4198
4199 : ${as_default:=$cc}
4200 : ${objcc_default:=$cc}
4201 : ${dep_cc_default:=$cc}
4202 : ${ld_default:=$cc}
4203 : ${host_ld_default:=$host_cc}
4204 set_default ar as objcc dep_cc ld ln_s host_ld windres
4205
4206 probe_cc as "$as"
4207 asflags_filter=$_flags_filter
4208 add_asflags $_flags $_cflags
4209 set_ccvars AS
4210
4211 probe_cc objcc "$objcc"
4212 objcflags_filter=$_flags_filter
4213 add_objcflags $_flags $_cflags
4214 set_ccvars OBJC
4215
4216 probe_cc ld "$ld"
4217 ldflags_filter=$_flags_filter
4218 add_ldflags $_flags $_ldflags
4219 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4220 LD_O=${_ld_o-$LD_O}
4221 LD_LIB=${_ld_lib-$LD_LIB}
4222 LD_PATH=${_ld_path-$LD_PATH}
4223
4224 probe_cc hostld "$host_ld"
4225 host_ldflags_filter=$_flags_filter
4226 add_host_ldflags $_flags $_ldflags
4227 HOSTLD_O=${_ld_o-$HOSTLD_O}
4228
4229 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4230     probe_cc depcc "$dep_cc"
4231     CCDEP=${_DEPCMD:-$DEPCMD}
4232     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4233     DEPCCFLAGS=$_flags
4234 fi
4235
4236 if $ar 2>&1 | grep -q Microsoft; then
4237     arflags="-nologo"
4238     ar_o='-out:$@'
4239 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4240     arflags="rq"
4241     ar_o='$@'
4242 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4243     arflags='-Xany -r -c'
4244     ar_o='$@'
4245 elif $ar 2>&1 | grep -q "\[D\] "; then
4246     arflags="rcD"
4247     ar_o='$@'
4248 else
4249     arflags="rc"
4250     ar_o='$@'
4251 fi
4252
4253 add_cflags $extra_cflags
4254 add_cxxflags $extra_cxxflags
4255 add_objcflags $extra_objcflags
4256 add_asflags $extra_cflags
4257
4258 if test -n "$sysroot"; then
4259     case "$cc_type" in
4260         gcc|llvm_gcc|clang)
4261             add_cppflags --sysroot="$sysroot"
4262             add_ldflags --sysroot="$sysroot"
4263 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4264             add_cppflags -isysroot "$sysroot"
4265             add_ldflags -isysroot "$sysroot"
4266         ;;
4267         tms470)
4268             add_cppflags -I"$sysinclude"
4269             add_ldflags  --sysroot="$sysroot"
4270         ;;
4271     esac
4272 fi
4273
4274 if test "$cpu" = host; then
4275     enabled cross_compile &&
4276         die "--cpu=host makes no sense when cross-compiling."
4277
4278     case "$cc_type" in
4279         gcc|llvm_gcc)
4280             check_native(){
4281                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4282                 sed -n "/cc1.*$1=/{
4283                             s/.*$1=\\([^ ]*\\).*/\\1/
4284                             p
4285                             q
4286                         }" $TMPE
4287             }
4288             cpu=$(check_native -march || check_native -mcpu)
4289         ;;
4290         clang)
4291             check_native(){
4292                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4293                 sed -n "/cc1.*-target-cpu /{
4294                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4295                             p
4296                             q
4297                         }" $TMPE
4298             }
4299             cpu=$(check_native -march)
4300         ;;
4301     esac
4302
4303     test "${cpu:-host}" = host &&
4304         die "--cpu=host not supported with compiler $cc"
4305 fi
4306
4307 # Deal with common $arch aliases
4308 case "$arch" in
4309     aarch64|arm64)
4310         arch="aarch64"
4311     ;;
4312     arm*|iPad*|iPhone*)
4313         arch="arm"
4314     ;;
4315     mips*|IP*)
4316         case "$arch" in
4317         *el)
4318             add_cppflags -EL
4319             add_ldflags -EL
4320         ;;
4321         *eb)
4322             add_cppflags -EB
4323             add_ldflags -EB
4324         ;;
4325         esac
4326         arch="mips"
4327     ;;
4328     parisc*|hppa*)
4329         arch="parisc"
4330     ;;
4331     "Power Macintosh"|ppc*|powerpc*)
4332         arch="ppc"
4333     ;;
4334     s390|s390x)
4335         arch="s390"
4336     ;;
4337     sh4|sh)
4338         arch="sh4"
4339     ;;
4340     sun4*|sparc*)
4341         arch="sparc"
4342     ;;
4343     tilegx|tile-gx)
4344         arch="tilegx"
4345     ;;
4346     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4347         arch="x86"
4348     ;;
4349 esac
4350
4351 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4352 enable $arch
4353
4354 # Add processor-specific flags
4355 if enabled aarch64; then
4356
4357     case $cpu in
4358         armv*)
4359             cpuflags="-march=$cpu"
4360         ;;
4361         *)
4362             cpuflags="-mcpu=$cpu"
4363         ;;
4364     esac
4365
4366 elif enabled alpha; then
4367
4368     cpuflags="-mcpu=$cpu"
4369
4370 elif enabled arm; then
4371
4372     check_arm_arch() {
4373         check_cpp_condition stddef.h \
4374             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4375             $cpuflags
4376     }
4377
4378     probe_arm_arch() {
4379         if   check_arm_arch 4;        then echo armv4
4380         elif check_arm_arch 4T;       then echo armv4t
4381         elif check_arm_arch 5;        then echo armv5
4382         elif check_arm_arch 5E;       then echo armv5e
4383         elif check_arm_arch 5T;       then echo armv5t
4384         elif check_arm_arch 5TE;      then echo armv5te
4385         elif check_arm_arch 5TEJ;     then echo armv5te
4386         elif check_arm_arch 6;        then echo armv6
4387         elif check_arm_arch 6J;       then echo armv6j
4388         elif check_arm_arch 6K;       then echo armv6k
4389         elif check_arm_arch 6Z;       then echo armv6z
4390         elif check_arm_arch 6ZK;      then echo armv6zk
4391         elif check_arm_arch 6T2;      then echo armv6t2
4392         elif check_arm_arch 7;        then echo armv7
4393         elif check_arm_arch 7A  7_A;  then echo armv7-a
4394         elif check_arm_arch 7S;       then echo armv7-a
4395         elif check_arm_arch 7R  7_R;  then echo armv7-r
4396         elif check_arm_arch 7M  7_M;  then echo armv7-m
4397         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4398         elif check_arm_arch 8A  8_A;  then echo armv8-a
4399         fi
4400     }
4401
4402     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4403
4404     case $cpu in
4405         armv*)
4406             cpuflags="-march=$cpu"
4407             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4408         ;;
4409         *)
4410             cpuflags="-mcpu=$cpu"
4411             case $cpu in
4412                 cortex-a*)                               subarch=armv7a  ;;
4413                 cortex-r*)                               subarch=armv7r  ;;
4414                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4415                 arm11*)                                  subarch=armv6   ;;
4416                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4417                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4418                 *)                             subarch=$(probe_arm_arch) ;;
4419             esac
4420         ;;
4421     esac
4422
4423     case "$subarch" in
4424         armv5t*)    enable fast_clz                ;;
4425         armv[6-8]*)
4426             enable fast_clz
4427             disabled fast_unaligned || enable fast_unaligned
4428             ;;
4429     esac
4430
4431 elif enabled avr32; then
4432
4433     case $cpu in
4434         ap7[02]0[0-2])
4435             subarch="avr32_ap"
4436             cpuflags="-mpart=$cpu"
4437         ;;
4438         ap)
4439             subarch="avr32_ap"
4440             cpuflags="-march=$cpu"
4441         ;;
4442         uc3[ab]*)
4443             subarch="avr32_uc"
4444             cpuflags="-mcpu=$cpu"
4445         ;;
4446         uc)
4447             subarch="avr32_uc"
4448             cpuflags="-march=$cpu"
4449         ;;
4450     esac
4451
4452 elif enabled bfin; then
4453
4454     cpuflags="-mcpu=$cpu"
4455
4456 elif enabled mips; then
4457
4458     cpuflags="-march=$cpu"
4459
4460     if [ "$cpu" != "generic" ]; then
4461         disable mips32r2
4462         disable mips32r5
4463         disable mips64r2
4464         disable mips32r6
4465         disable mips64r6
4466         disable loongson2
4467         disable loongson3
4468
4469         case $cpu in
4470             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4471                 enable mips32r2
4472                 disable msa
4473             ;;
4474             p5600|i6400|p6600)
4475                 disable mipsdsp
4476                 disable mipsdspr2
4477             ;;
4478             loongson*)
4479                 enable loongson2
4480                 enable loongson3
4481                 enable local_aligned_8 local_aligned_16 local_aligned_32
4482                 enable simd_align_16
4483                 enable fast_64bit
4484                 enable fast_clz
4485                 enable fast_cmov
4486                 enable fast_unaligned
4487                 disable aligned_stack
4488                 disable mipsfpu
4489                 disable mipsdsp
4490                 disable mipsdspr2
4491                 case $cpu in
4492                     loongson3*)
4493                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4494                     ;;
4495                     loongson2e)
4496                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4497                     ;;
4498                     loongson2f)
4499                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4500                     ;;
4501                 esac
4502             ;;
4503             *)
4504                 # Unknown CPU. Disable everything.
4505                 warn "unknown CPU. Disabling all MIPS optimizations."
4506                 disable mipsfpu
4507                 disable mipsdsp
4508                 disable mipsdspr2
4509                 disable msa
4510                 disable mmi
4511             ;;
4512         esac
4513
4514         case $cpu in
4515             24kc)
4516                 disable mipsfpu
4517                 disable mipsdsp
4518                 disable mipsdspr2
4519             ;;
4520             24kf*)
4521                 disable mipsdsp
4522                 disable mipsdspr2
4523             ;;
4524             24kec|34kc|1004kc)
4525                 disable mipsfpu
4526                 disable mipsdspr2
4527             ;;
4528             24kef*|34kf*|1004kf*)
4529                 disable mipsdspr2
4530             ;;
4531             74kc)
4532                 disable mipsfpu
4533             ;;
4534             p5600)
4535                 enable mips32r5
4536                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4537             ;;
4538             i6400)
4539                 enable mips64r6
4540                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4541             ;;
4542             p6600)
4543                 enable mips64r6
4544                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4545             ;;
4546         esac
4547     else
4548         # We do not disable anything. Is up to the user to disable the unwanted features.
4549         warn 'generic cpu selected'
4550     fi
4551
4552 elif enabled ppc; then
4553
4554     disable ldbrx
4555
4556     case $(tolower $cpu) in
4557         601|ppc601|powerpc601)
4558             cpuflags="-mcpu=601"
4559             disable altivec
4560         ;;
4561         603*|ppc603*|powerpc603*)
4562             cpuflags="-mcpu=603"
4563             disable altivec
4564         ;;
4565         604*|ppc604*|powerpc604*)
4566             cpuflags="-mcpu=604"
4567             disable altivec
4568         ;;
4569         g3|75*|ppc75*|powerpc75*)
4570             cpuflags="-mcpu=750"
4571             disable altivec
4572         ;;
4573         g4|745*|ppc745*|powerpc745*)
4574             cpuflags="-mcpu=7450"
4575             disable vsx
4576         ;;
4577         74*|ppc74*|powerpc74*)
4578             cpuflags="-mcpu=7400"
4579             disable vsx
4580         ;;
4581         g5|970|ppc970|powerpc970)
4582             cpuflags="-mcpu=970"
4583             disable vsx
4584         ;;
4585         power[3-6]*)
4586             cpuflags="-mcpu=$cpu"
4587             disable vsx
4588         ;;
4589         power[7-8]*)
4590             cpuflags="-mcpu=$cpu"
4591         ;;
4592         cell)
4593             cpuflags="-mcpu=cell"
4594             enable ldbrx
4595             disable vsx
4596         ;;
4597         e500mc)
4598             cpuflags="-mcpu=e500mc"
4599             disable altivec
4600         ;;
4601         e500v2)
4602             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4603             disable altivec
4604             disable dcbzl
4605         ;;
4606         e500)
4607             cpuflags="-mcpu=8540 -mhard-float"
4608             disable altivec
4609             disable dcbzl
4610         ;;
4611     esac
4612
4613 elif enabled sparc; then
4614
4615     case $cpu in
4616         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4617             cpuflags="-mcpu=$cpu"
4618         ;;
4619         ultrasparc*|niagara[234])
4620             cpuflags="-mcpu=$cpu"
4621         ;;
4622     esac
4623
4624 elif enabled x86; then
4625
4626     case $cpu in
4627         i[345]86|pentium)
4628             cpuflags="-march=$cpu"
4629             disable i686
4630             disable mmx
4631         ;;
4632         # targets that do NOT support nopl and conditional mov (cmov)
4633         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4634             cpuflags="-march=$cpu"
4635             disable i686
4636         ;;
4637         # targets that do support nopl and conditional mov (cmov)
4638         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4639         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4640         |amdfam10|barcelona|b[dt]ver*|znver*)
4641             cpuflags="-march=$cpu"
4642             enable i686
4643             enable fast_cmov
4644         ;;
4645         # targets that do support conditional mov but on which it's slow
4646         pentium4|pentium4m|prescott|nocona)
4647             cpuflags="-march=$cpu"
4648             enable i686
4649             disable fast_cmov
4650         ;;
4651     esac
4652
4653 fi
4654
4655 if [ "$cpu" != generic ]; then
4656     add_cflags  $cpuflags
4657     add_asflags $cpuflags
4658     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4659 fi
4660
4661 # compiler sanity check
4662 check_exec <<EOF
4663 int main(void){ return 0; }
4664 EOF
4665 if test "$?" != 0; then
4666     echo "$cc is unable to create an executable file."
4667     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4668         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4669         echo "Only do this if you know what cross compiling means."
4670     fi
4671     die "C compiler test failed."
4672 fi
4673
4674 add_cppflags -D_ISOC99_SOURCE
4675 add_cxxflags -D__STDC_CONSTANT_MACROS
4676 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4677
4678 # some compilers silently accept -std=c11, so we also need to check that the
4679 # version macro is defined properly
4680 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4681     add_cflags -std=c11
4682 else
4683     check_cflags -std=c99
4684 fi
4685
4686 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4687 #include <stdlib.h>
4688 EOF
4689 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4690 #include <stdlib.h>
4691 EOF
4692
4693 add_host_cppflags -D_ISOC99_SOURCE
4694 check_host_cflags -std=c99
4695 check_host_cflags -Wall
4696 check_host_cflags -O3
4697
4698 check_64bit(){
4699     arch32=$1
4700     arch64=$2
4701     expr=$3
4702     check_code cc "" "int test[2*($expr) - 1]" &&
4703         subarch=$arch64 || subarch=$arch32
4704 }
4705
4706 case "$arch" in
4707     aarch64|alpha|ia64)
4708         spic=$shared
4709     ;;
4710     mips)
4711         check_64bit mips mips64 '_MIPS_SIM > 1'
4712         spic=$shared
4713     ;;
4714     parisc)
4715         check_64bit parisc parisc64 'sizeof(void *) > 4'
4716         spic=$shared
4717     ;;
4718     ppc)
4719         check_64bit ppc ppc64 'sizeof(void *) > 4'
4720         spic=$shared
4721     ;;
4722     s390)
4723         check_64bit s390 s390x 'sizeof(void *) > 4'
4724         spic=$shared
4725     ;;
4726     sparc)
4727         check_64bit sparc sparc64 'sizeof(void *) > 4'
4728         spic=$shared
4729     ;;
4730     x86)
4731         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4732         # Treat x32 as x64 for now. Note it also needs spic=$shared
4733         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4734             subarch=x86_64
4735         if test "$subarch" = "x86_64"; then
4736             spic=$shared
4737         fi
4738     ;;
4739     ppc)
4740         check_cc <<EOF && subarch="ppc64"
4741         int test[(int)sizeof(char*) - 7];
4742 EOF
4743     ;;
4744 esac
4745
4746 enable $subarch
4747 enabled spic && enable_weak pic
4748
4749 # OS specific
4750 case $target_os in
4751     aix)
4752         SHFLAGS=-shared
4753         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4754         enabled shared && add_ldflags -Wl,-brtl
4755         ;;
4756     android)
4757         disable symver
4758         enable section_data_rel_ro
4759         SLIB_INSTALL_NAME='$(SLIBNAME)'
4760         SLIB_INSTALL_LINKS=
4761         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4762         ;;
4763     haiku)
4764         prefix_default="/boot/common"
4765         network_extralibs="-lnetwork"
4766         host_libs=
4767         ;;
4768     sunos)
4769         SHFLAGS='-shared -Wl,-h,$$(@F)'
4770         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4771         network_extralibs="-lsocket -lnsl"
4772         add_cppflags -D__EXTENSIONS__
4773         # When using suncc to build, the Solaris linker will mark
4774         # an executable with each instruction set encountered by
4775         # the Solaris assembler.  As our libraries contain their own
4776         # guards for processor-specific code, instead suppress
4777         # generation of the HWCAPS ELF section on Solaris x86 only.
4778         enabled_all suncc x86 &&
4779             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4780             add_ldflags -Wl,-M,mapfile
4781         nm_default='nm -P -g'
4782         version_script='-M'
4783         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4784         ;;
4785     netbsd)
4786         disable symver
4787         oss_indev_extralibs="-lossaudio"
4788         oss_outdev_extralibs="-lossaudio"
4789         enabled gcc || check_ldflags -Wl,-zmuldefs
4790         ;;
4791     openbsd|bitrig)
4792         disable symver
4793         SHFLAGS='-shared'
4794         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4795         SLIB_INSTALL_LINKS=
4796         oss_indev_extralibs="-lossaudio"
4797         oss_outdev_extralibs="-lossaudio"
4798         ;;
4799     dragonfly)
4800         disable symver
4801         ;;
4802     freebsd)
4803         ;;
4804     bsd/os)
4805         add_extralibs -lpoll -lgnugetopt
4806         strip="strip -d"
4807         ;;
4808     darwin)
4809         enabled ppc && add_asflags -force_cpusubtype_ALL
4810         install_name_dir_default='$(SHLIBDIR)'
4811         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4812         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4813         strip="${strip} -x"
4814         add_ldflags -Wl,-dynamic,-search_paths_first
4815         SLIBSUF=".dylib"
4816         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4817         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4818         objformat="macho"
4819         enabled x86_64 && objformat="macho64"
4820         enabled_any pic shared x86_64 ||
4821             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4822         check_header dispatch/dispatch.h &&
4823             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4824         version_script='-exported_symbols_list'
4825         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4826         ;;
4827     msys*)
4828         die "Native MSYS builds are discouraged, please use the MINGW environment."
4829         ;;
4830     mingw32*|mingw64*)
4831         if test $target_os = "mingw32ce"; then
4832             disable network
4833         else
4834             target_os=mingw32
4835         fi
4836         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4837         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4838         LIBTARGET=i386
4839         if enabled x86_64; then
4840             LIBTARGET="i386:x86-64"
4841         elif enabled arm; then
4842             LIBTARGET=arm-wince
4843         fi
4844         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4845         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4846         shlibdir_default="$bindir_default"
4847         SLIBPREF=""
4848         SLIBSUF=".dll"
4849         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4850         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4851         dlltool="${cross_prefix}dlltool"
4852         if check_cmd lib.exe -list; then
4853             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4854             if enabled x86_64; then
4855                 LIBTARGET=x64
4856             fi
4857         elif check_cmd $dlltool --version; then
4858             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4859         fi
4860         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4861         SLIB_INSTALL_LINKS=
4862         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4863         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4864         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4865         objformat="win32"
4866         ranlib=:
4867         enable dos_paths
4868         check_ldflags -Wl,--nxcompat,--dynamicbase
4869         # Lets work around some stupidity in binutils.
4870         # ld will strip relocations from executables even though we need them
4871         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4872         # however ld then forgets what the entry point should be (oops) so we
4873         # have to manually (re)set it.
4874         if enabled x86_32; then
4875             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4876         elif enabled x86_64; then
4877             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4878             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4879             # Set image base >4GB for extra entropy with HEASLR
4880             add_ldexeflags -Wl,--image-base,0x140000000
4881             append SHFLAGS -Wl,--image-base,0x180000000
4882         fi
4883         ;;
4884     win32|win64)
4885         disable symver
4886         if enabled shared; then
4887             # Link to the import library instead of the normal static library
4888             # for shared libs.
4889             LD_LIB='%.lib'
4890             # Cannot build both shared and static libs with MSVC or icl.
4891             disable static
4892         fi
4893         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4894         shlibdir_default="$bindir_default"
4895         SLIBPREF=""
4896         SLIBSUF=".dll"
4897         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4898         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4899         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4900         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4901         SLIB_INSTALL_LINKS=
4902         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4903         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4904         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4905         objformat="win32"
4906         ranlib=:
4907         enable dos_paths
4908         ;;
4909     cygwin*)
4910         target_os=cygwin
4911         shlibdir_default="$bindir_default"
4912         SLIBPREF="cyg"
4913         SLIBSUF=".dll"
4914         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4915         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4916         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4917         SLIB_INSTALL_LINKS=
4918         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4919         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4920         objformat="win32"
4921         enable dos_paths
4922         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4923         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4924         ;;
4925     *-dos|freedos|opendos)
4926         network_extralibs="-lsocket"
4927         objformat="coff"
4928         enable dos_paths
4929         add_cppflags -U__STRICT_ANSI__
4930         ;;
4931     linux)
4932         enable dv1394
4933         enable section_data_rel_ro
4934         ;;
4935     irix*)
4936         target_os=irix
4937         ranlib="echo ignoring ranlib"
4938         ;;
4939     os/2*)
4940         strip="lxlite -CS"
4941         objformat="aout"
4942         add_cppflags -D_GNU_SOURCE
4943         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4944         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4945         LIBSUF="_s.a"
4946         SLIBPREF=""
4947         SLIBSUF=".dll"
4948         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4949         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4950         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4951             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4952             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4953             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4954             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4955         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4956             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4957         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4958         SLIB_INSTALL_LINKS=
4959         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4960         enable dos_paths
4961         enable_weak os2threads
4962         ;;
4963     gnu/kfreebsd)
4964         add_cppflags -D_BSD_SOURCE
4965         ;;
4966     gnu)
4967         ;;
4968     qnx)
4969         add_cppflags -D_QNX_SOURCE
4970         network_extralibs="-lsocket"
4971         ;;
4972     symbian)
4973         SLIBSUF=".dll"
4974         enable dos_paths
4975         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4976         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4977         add_ldflags -Wl,--target1-abs,--no-undefined \
4978                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4979                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4980         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4981                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4982                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4983         ;;
4984     osf1)
4985         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4986         ;;
4987     minix)
4988         ;;
4989     plan9)
4990         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4991                      -D_REENTRANT_SOURCE        \
4992                      -D_RESEARCH_SOURCE         \
4993                      -DFD_SETSIZE=96            \
4994                      -DHAVE_SOCK_OPTS
4995         add_compat strtod.o strtod=avpriv_strtod
4996         network_extralibs='-lbsd'
4997         exeobjs=compat/plan9/main.o
4998         disable ffserver
4999         cp_f='cp'
5000         ;;
5001     none)
5002         ;;
5003     *)
5004         die "Unknown OS '$target_os'."
5005         ;;
5006 esac
5007
5008 # test if creating links works
5009 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5010 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5011 mkdir "$link_dest"
5012 $ln_s "$link_dest" "$link_name"
5013 touch "$link_dest/test_file"
5014 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5015     # create link to source path
5016     [ -e src ] && rm src
5017     $ln_s "$source_path" src
5018     source_link=src
5019 else
5020     # creating directory links doesn't work
5021     # fall back to using the full source path
5022     source_link="$source_path"
5023 fi
5024 # cleanup
5025 rm -r "$link_dest"
5026 rm -r "$link_name"
5027
5028 # determine libc flavour
5029
5030 probe_libc(){
5031     pfx=$1
5032     pfx_no_=${pfx%_}
5033     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5034     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5035         eval ${pfx}libc_type=uclibc
5036         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5037     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5038         eval ${pfx}libc_type=glibc
5039         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5040     # MinGW headers can be installed on Cygwin, so check for newlib first.
5041     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5042         eval ${pfx}libc_type=newlib
5043         add_${pfx}cppflags -U__STRICT_ANSI__
5044     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5045     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5046         eval ${pfx}libc_type=mingw64
5047         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5048             add_compat msvcrt/snprintf.o
5049             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5050         fi
5051         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5052         eval test \$${pfx_no_}cc_type = "gcc" &&
5053             add_${pfx}cppflags -D__printf__=__gnu_printf__
5054     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5055          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5056         eval ${pfx}libc_type=mingw32
5057         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5058             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5059             die "ERROR: MinGW32 runtime version must be >= 3.15."
5060         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5061         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5062             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5063         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5064             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5065         eval test \$${pfx_no_}cc_type = "gcc" &&
5066             add_${pfx}cppflags -D__printf__=__gnu_printf__
5067     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5068         eval ${pfx}libc_type=msvcrt
5069         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5070             if [ "$pfx" = host_ ]; then
5071                 add_host_cppflags -Dsnprintf=_snprintf
5072             else
5073                 add_compat strtod.o strtod=avpriv_strtod
5074                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5075                                              _snprintf=avpriv_snprintf  \
5076                                              vsnprintf=avpriv_vsnprintf
5077             fi
5078         fi
5079         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5080         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5081         # 0x601 by default unless something else is set by the user.
5082         # This can easily lead to us detecting functions only present
5083         # in such new versions and producing binaries requiring windows 7.0.
5084         # Therefore explicitly set the default to XP unless the user has
5085         # set something else on the command line.
5086         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5087         # family. For these cases, configure is free to use any functions
5088         # found in the SDK headers by default. (Alternatively, we could force
5089         # _WIN32_WINNT to 0x0602 in that case.)
5090         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5091             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5092 #ifdef WINAPI_FAMILY
5093 #include <winapifamily.h>
5094 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5095 #error not desktop
5096 #endif
5097 #endif
5098 EOF
5099         if [ "$pfx" = "" ]; then
5100             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5101             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5102         fi
5103     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5104         eval ${pfx}libc_type=klibc
5105     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5106         eval ${pfx}libc_type=bionic
5107     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5108         eval ${pfx}libc_type=solaris
5109         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5110     fi
5111     check_${pfx}cc <<EOF
5112 #include <time.h>
5113 void *v = localtime_r;
5114 EOF
5115 test "$?" != 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
5116 #include <time.h>
5117 void *v = localtime_r;
5118 EOF
5119
5120 }
5121
5122 probe_libc
5123 test -n "$libc_type" && enable libc_$libc_type
5124 probe_libc host_
5125 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5126
5127 case $libc_type in
5128     bionic)
5129         add_compat strtod.o strtod=avpriv_strtod
5130         ;;
5131 esac
5132
5133 # hacks for compiler/libc/os combinations
5134
5135 if enabled_all tms470 libc_glibc; then
5136     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5137     add_cppflags -D__USER_LABEL_PREFIX__=
5138     add_cppflags -D__builtin_memset=memset
5139     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5140     add_cflags   -pds=48    # incompatible redefinition of macro
5141 fi
5142
5143 if enabled_all ccc libc_glibc; then
5144     add_ldflags -Wl,-z,now  # calls to libots crash without this
5145 fi
5146
5147 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5148     add_cppflags '-I\$(SRC_PATH)/compat/float'
5149
5150 esc(){
5151     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5152 }
5153
5154 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5155
5156 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5157
5158 set_default libdir
5159 : ${shlibdir_default:="$libdir"}
5160 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5161
5162 set_default $PATHS_LIST
5163 set_default nm
5164
5165 # we need to build at least one lib type
5166 if ! enabled_any static shared; then
5167     cat <<EOF
5168 At least one library type must be built.
5169 Specify --enable-static to build the static libraries or --enable-shared to
5170 build the shared libraries as well. To only build the shared libraries specify
5171 --disable-static in addition to --enable-shared.
5172 EOF
5173     exit 1
5174 fi
5175
5176 disabled optimizations || check_cflags -fomit-frame-pointer
5177
5178 enable_weak_pic() {
5179     disabled pic && return
5180     enable pic
5181     add_cppflags -DPIC
5182     case "$target_os" in
5183     mingw*|cygwin*)
5184         ;;
5185     *)
5186         add_cflags -fPIC
5187         ;;
5188     esac
5189     add_asflags  -fPIC
5190 }
5191
5192 enabled pic && enable_weak_pic
5193
5194 check_cc <<EOF || die "Symbol mangling check failed."
5195 int ff_extern;
5196 EOF
5197 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5198 extern_prefix=${sym%%ff_extern*}
5199
5200 check_cc <<EOF && enable_weak inline_asm
5201 void foo(void) { __asm__ volatile ("" ::); }
5202 EOF
5203
5204 _restrict=
5205 for restrict_keyword in restrict __restrict__ __restrict; do
5206     check_cc <<EOF && _restrict=$restrict_keyword && break
5207 void foo(char * $restrict_keyword p);
5208 EOF
5209 done
5210
5211 check_cc <<EOF && enable pragma_deprecated
5212 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5213 EOF
5214
5215 check_cc <<EOF && enable attribute_packed
5216 struct { int x; } __attribute__((packed)) x;
5217 EOF
5218
5219 check_cc <<EOF && enable attribute_may_alias
5220 union { int x; } __attribute__((may_alias)) x;
5221 EOF
5222
5223 check_cc <<EOF || die "endian test failed"
5224 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5225 EOF
5226 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5227
5228 if ! enabled ppc64 || enabled bigendian; then
5229     disable vsx
5230 fi
5231
5232 check_gas() {
5233     log "check_gas using '$as' as AS"
5234     # :vararg is used on aarch64, arm and ppc altivec
5235     check_as <<EOF || return 1
5236 .macro m n, y:vararg=0
5237 \n: .int \y
5238 .endm
5239 m x
5240 EOF
5241     # .altmacro is only used in arm asm
5242     ! enabled arm || check_as <<EOF || return 1
5243 .altmacro
5244 EOF
5245     enable gnu_as
5246     return 0
5247 }
5248
5249 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5250     nogas=:
5251     enabled_any arm aarch64 && nogas=die
5252     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5253     as_noop=-v
5254
5255     case $as_type in
5256         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5257         gcc)  gaspp_as_type=gas ;;
5258         *)    gaspp_as_type=$as_type ;;
5259     esac
5260
5261     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5262
5263     test "${as#*gas-preprocessor.pl}" != "$as" ||
5264     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5265         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5266
5267     if ! check_gas ; then
5268         as=${gas:=$as}
5269         check_gas || \
5270             $nogas "GNU assembler not found, install/update gas-preprocessor"
5271     fi
5272
5273     check_as <<EOF && enable as_func
5274 .func test
5275 .endfunc
5276 EOF
5277 fi
5278
5279 check_inline_asm inline_asm_labels '"1:\n"'
5280
5281 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5282
5283 if enabled aarch64; then
5284     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5285     # internal assembler in clang 3.3 does not support this instruction
5286     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5287     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5288
5289     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5290
5291 elif enabled alpha; then
5292
5293     check_cflags -mieee
5294
5295 elif enabled arm; then
5296
5297     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5298
5299     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5300 float func(float a, float b){ return a+b; }
5301 EOF
5302
5303     enabled thumb && check_cflags -mthumb || check_cflags -marm
5304
5305     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5306         enable vfp_args
5307     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5308         enable vfp_args
5309     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5310         case "${cross_prefix:-$cc}" in
5311             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5312             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5313 __asm__ (".eabi_attribute 28, 1");
5314 int main(void) { return 0; }
5315 EOF
5316         esac
5317         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5318     fi
5319
5320     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5321     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5322     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5323     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5324     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5325     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5326     enabled setend  && check_insn setend  'setend be'
5327
5328     [ $target_os = linux ] || [ $target_os = android ] ||
5329         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5330             $ARCH_EXT_LIST_ARM
5331
5332     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5333
5334     check_as <<EOF && enable as_dn_directive
5335 ra .dn d0.i16
5336 .unreq ra
5337 EOF
5338     check_as <<EOF && enable as_fpu_directive
5339 .fpu neon
5340 EOF
5341
5342     # llvm's integrated assembler supports .object_arch from llvm 3.5
5343     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5344 .object_arch armv4
5345 EOF
5346
5347     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5348
5349 elif enabled mips; then
5350
5351     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5352     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5353     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5354
5355     # Enable minimum ISA based on selected options
5356     if enabled mips64; then
5357         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5358         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5359         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5360     else
5361         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5362         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5363         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5364         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5365     fi
5366
5367     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5368     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5369     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5370     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5371     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5372
5373 elif enabled parisc; then
5374
5375     if enabled gcc; then
5376         case $($cc -dumpversion) in
5377             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5378         esac
5379     fi
5380
5381 elif enabled ppc; then
5382
5383     enable local_aligned_8 local_aligned_16 local_aligned_32
5384
5385     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5386     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5387     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5388     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5389
5390     # AltiVec flags: The FSF version of GCC differs from the Apple version
5391     if enabled altivec; then
5392         check_cflags -maltivec -mabi=altivec &&
5393         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5394         check_cflags -faltivec
5395
5396         # check if our compiler supports Motorola AltiVec C API
5397         check_cc <<EOF || disable altivec
5398 $inc_altivec_h
5399 int main(void) {
5400     vector signed int v1 = (vector signed int) { 0 };
5401     vector signed int v2 = (vector signed int) { 1 };
5402     v1 = vec_add(v1, v2);
5403     return 0;
5404 }
5405 EOF
5406
5407         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5408     fi
5409
5410     if enabled vsx; then
5411         check_cflags -mvsx &&
5412         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5413     fi
5414
5415     if enabled power8; then
5416         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5417     fi
5418
5419 elif enabled x86; then
5420
5421     check_builtin rdtsc    intrin.h   "__rdtsc()"
5422     check_builtin mm_empty mmintrin.h "_mm_empty()"
5423
5424     enable local_aligned_8 local_aligned_16 local_aligned_32
5425
5426     # check whether EBP is available on x86
5427     # As 'i' is stored on the stack, this program will crash
5428     # if the base pointer is used to access it because the
5429     # base pointer is cleared in the inline assembly code.
5430     check_exec_crash <<EOF && enable ebp_available
5431 volatile int i=0;
5432 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5433 return i;
5434 EOF
5435
5436     # check whether EBX is available on x86
5437     check_inline_asm ebx_available '""::"b"(0)' &&
5438         check_inline_asm ebx_available '"":::"%ebx"'
5439
5440     # check whether xmm clobbers are supported
5441     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5442
5443     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5444         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5445
5446     # check whether binutils is new enough to compile SSSE3/MMXEXT
5447     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5448     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5449
5450     if ! disabled_any asm mmx yasm; then
5451         if check_cmd $yasmexe --version; then
5452             enabled x86_64 && yasm_extra="-m amd64"
5453             yasm_debug="-g dwarf2"
5454         elif check_cmd nasm -v; then
5455             yasmexe=nasm
5456             yasm_debug="-g -F dwarf"
5457             if enabled x86_64; then
5458                 case "$objformat" in
5459                     elf)   objformat=elf64 ;;
5460                     win32) objformat=win64 ;;
5461                 esac
5462             fi
5463         fi
5464
5465         YASMFLAGS="-f $objformat $yasm_extra"
5466         enabled pic               && append YASMFLAGS "-DPIC"
5467         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5468         case "$objformat" in
5469             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5470         esac
5471
5472         check_yasm "movbe ecx, [5]" && enable yasm ||
5473             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5474         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5475         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5476         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5477         check_yasm "CPU amdnop" || disable cpunop
5478     fi
5479
5480     case "$cpu" in
5481         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5482             disable fast_clz
5483         ;;
5484     esac
5485
5486 fi
5487
5488 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5489
5490 check_ldflags -Wl,--as-needed
5491 check_ldflags -Wl,-z,noexecstack
5492
5493 if check_func dlopen && check_func dlsym; then
5494     ldl=
5495 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5496     ldl=-ldl
5497 fi
5498
5499 avisynth_demuxer_extralibs='$ldl'
5500 cuda_extralibs='$ldl'
5501 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5502 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5503 frei0r_filter_extralibs='$ldl'
5504 frei0r_src_filter_extralibs='$ldl'
5505 ladspa_filter_extralibs='$ldl'
5506 nvenc_extralibs='$ldl'
5507 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5508 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5509
5510 if ! disabled network; then
5511     check_func getaddrinfo $network_extralibs
5512     check_func inet_aton $network_extralibs
5513
5514     check_type netdb.h "struct addrinfo"
5515     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5516     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5517     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5518     check_type poll.h "struct pollfd"
5519     check_type netinet/sctp.h "struct sctp_event_subscribe"
5520     check_struct "sys/socket.h" "struct msghdr" msg_flags
5521     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5522     check_type netinet/in.h "struct sockaddr_in6"
5523     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5524     check_type "sys/types.h sys/socket.h" socklen_t
5525
5526     # Prefer arpa/inet.h over winsock2
5527     if check_header arpa/inet.h ; then
5528         check_func closesocket
5529     elif check_header winsock2.h ; then
5530         check_func_headers winsock2.h closesocket -lws2 &&
5531             network_extralibs="-lws2" ||
5532         { check_func_headers winsock2.h closesocket -lws2_32 &&
5533             network_extralibs="-lws2_32"; } || disable winsock2_h network
5534         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5535
5536         check_type ws2tcpip.h socklen_t
5537         check_type ws2tcpip.h "struct addrinfo"
5538         check_type ws2tcpip.h "struct group_source_req"
5539         check_type ws2tcpip.h "struct ip_mreq_source"
5540         check_type ws2tcpip.h "struct ipv6_mreq"
5541         check_type winsock2.h "struct pollfd"
5542         check_struct winsock2.h "struct sockaddr" sa_len
5543         check_type ws2tcpip.h "struct sockaddr_in6"
5544         check_type ws2tcpip.h "struct sockaddr_storage"
5545     else
5546         disable network
5547     fi
5548 fi
5549
5550 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5551 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5552 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5553 check_builtin sarestart signal.h "SA_RESTART"
5554 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5555 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5556 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5557 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5558 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5559
5560 case "$custom_allocator" in
5561     jemalloc)
5562         # jemalloc by default does not use a prefix
5563         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5564     ;;
5565     tcmalloc)
5566         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5567         malloc_prefix=tc_
5568     ;;
5569 esac
5570
5571 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5572 check_func  ${malloc_prefix}memalign            && enable memalign
5573 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5574
5575 check_func  access
5576 check_func_headers stdlib.h arc4random
5577 check_func_headers time.h clock_gettime ||
5578     { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
5579 check_func  fcntl
5580 check_func  fork
5581 check_func  gethrtime
5582 check_func  getopt
5583 check_func  getrusage
5584 check_func  gettimeofday
5585 check_func  isatty
5586 check_func  mach_absolute_time
5587 check_func  mkstemp
5588 check_func  mmap
5589 check_func  mprotect
5590 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5591 check_func_headers time.h nanosleep ||
5592     { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
5593 check_func  sched_getaffinity
5594 check_func  setrlimit
5595 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5596 check_func  strerror_r
5597 check_func  sysconf
5598 check_func  sysctl
5599 check_func  usleep
5600
5601 check_func_headers conio.h kbhit
5602 check_func_headers io.h setmode
5603 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5604 check_func_headers stdlib.h getenv
5605 check_func_headers sys/stat.h lstat
5606
5607 check_func_headers windows.h CoTaskMemFree -lole32
5608 check_func_headers windows.h GetProcessAffinityMask
5609 check_func_headers windows.h GetProcessTimes
5610 check_func_headers windows.h GetSystemTimeAsFileTime
5611 check_func_headers windows.h LoadLibrary
5612 check_func_headers windows.h MapViewOfFile
5613 check_func_headers windows.h PeekNamedPipe
5614 check_func_headers windows.h SetConsoleTextAttribute
5615 check_func_headers windows.h SetConsoleCtrlHandler
5616 check_func_headers windows.h Sleep
5617 check_func_headers windows.h VirtualAlloc
5618 check_struct windows.h "CONDITION_VARIABLE" Ptr
5619 check_func_headers glob.h glob
5620 enabled xlib &&
5621     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5622
5623 check_header AudioToolbox/AudioToolbox.h
5624 check_header direct.h
5625 check_header dirent.h
5626 check_header dlfcn.h
5627 check_header d3d11.h
5628 check_header dxva.h
5629 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5630 check_header io.h
5631 check_header libcrystalhd/libcrystalhd_if.h
5632 check_header mach/mach_time.h
5633 check_header malloc.h
5634 check_header net/udplite.h
5635 check_header poll.h
5636 check_header sys/mman.h
5637 check_header sys/param.h
5638 check_header sys/resource.h
5639 check_header sys/select.h
5640 check_header sys/time.h
5641 check_header sys/un.h
5642 check_header termios.h
5643 check_header unistd.h
5644 check_header valgrind/valgrind.h
5645 check_header vdpau/vdpau.h
5646 check_header vdpau/vdpau_x11.h
5647 check_header VideoDecodeAcceleration/VDADecoder.h
5648 check_header VideoToolbox/VideoToolbox.h
5649 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5650 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5651 check_header windows.h
5652 check_header X11/extensions/XvMClib.h
5653 check_header asm/types.h
5654
5655 # it seems there are versions of clang in some distros that try to use the
5656 # gcc headers, which explodes for stdatomic
5657 # so we also check that atomics actually work here
5658 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5659
5660 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5661 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5662 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5663
5664 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5665
5666 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5667
5668 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5669 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5670 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5671 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5672 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5673
5674 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5675 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5676 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5677 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5678 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5679 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5680 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5681 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5682
5683 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5684
5685 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5686
5687 if ! disabled w32threads && ! enabled pthreads; then
5688     check_func_headers "windows.h process.h" _beginthreadex &&
5689         enable w32threads || disable w32threads
5690     if ! enabled w32threads && enabled winrt; then
5691         check_func_headers "windows.h" CreateThread &&
5692             enable w32threads || disable w32threads
5693     fi
5694 fi
5695
5696 # check for some common methods of building with pthread support
5697 # do this before the optional library checks as some of them require pthreads
5698 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5699     enable pthreads
5700     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5701         add_cflags -pthread
5702         add_extralibs -pthread
5703     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5704         add_cflags -pthreads
5705         add_extralibs -pthreads
5706     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5707         add_cflags -ldl -pthread
5708         add_extralibs -ldl -pthread
5709     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5710         add_extralibs -lpthreadGC2
5711     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5712         :
5713     elif ! check_func pthread_join && ! check_func pthread_create; then
5714         disable pthreads
5715     fi
5716     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5717 fi
5718
5719
5720 if enabled pthreads; then
5721   check_func pthread_cancel
5722 fi
5723
5724 enabled pthreads &&
5725     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5726
5727 disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
5728 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
5729 disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
5730
5731 check_lib math.h sin -lm && LIBM="-lm"
5732 disabled crystalhd || check_lib "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5733
5734 atan2f_args=2
5735 copysign_args=2
5736 hypot_args=2
5737 ldexpf_args=2
5738 powf_args=2
5739
5740 for func in $MATH_FUNCS; do
5741     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5742 done
5743
5744 for func in $COMPLEX_FUNCS; do
5745     eval check_complexfunc $func \${${func}_args:-1}
5746 done
5747
5748 # these are off by default, so fail if requested and not available
5749 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5750 enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5751                                 check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5752 enabled cuda              && check_header cuda.h # this is not a dependency
5753 enabled cuvid             && { enabled cuda ||
5754                                die "ERROR: CUVID requires CUDA"; }
5755 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5756 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5757 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5758 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5759                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5760 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5761 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5762 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5763 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5764                                check_lib "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5765 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5766 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5767 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5768 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5769 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5770 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5771                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5772                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5773 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5774 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5775                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5776                                  warn "using libfdk without pkg-config"; } }
5777 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"
5778 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_libs
5779 enabled fontconfig        && enable libfontconfig
5780 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5781 enabled libfreetype       && require_libfreetype
5782 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5783 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5784 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5785                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5786                                done || die "ERROR: libgsm not found"; }
5787 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5788 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5789 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5790 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5791 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5792 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5793 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5794 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5795 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5796 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5797                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5798                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5799                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5800 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5801 enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5802                                check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5803                                { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5804                                { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5805                                { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5806                                die "ERROR: libopenjpeg not found"; }
5807 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5808 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5809 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5810 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5811 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5812 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5813 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5814 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5815                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5816 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5817 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5818 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5819 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5820 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5821 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5822 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5823                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5824                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5825 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5826 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5827 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5828 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5829
5830 enabled libvpx            && {
5831     enabled libvpx_vp8_decoder && {
5832         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5833             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5834                 die "ERROR: libvpx decoder version must be >=0.9.1";
5835     }
5836     enabled libvpx_vp8_encoder && {
5837         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5838             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5839                 die "ERROR: libvpx encoder version must be >=0.9.7";
5840     }
5841     enabled libvpx_vp9_decoder && {
5842         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5843             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5844                 disable libvpx_vp9_decoder;
5845     }
5846     enabled libvpx_vp9_encoder && {
5847         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5848             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5849                 disable libvpx_vp9_encoder;
5850     }
5851     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5852         die "libvpx enabled but no supported decoders found"
5853     fi
5854 }
5855
5856 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5857 enabled libwebp           && {
5858     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5859     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5860 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5861                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5862                                  warn "using libx264 without pkg-config"; } } &&
5863                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5864                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5865                              { check_cpp_condition x264.h "X264_MPEG2" &&
5866                                enable libx262; }
5867 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5868                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5869                                die "ERROR: libx265 version must be >= 68."; }
5870 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5871 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5872 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5873 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5874 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5875                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5876                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5877 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5878 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5879                                 { ! enabled cross_compile && {
5880                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5881                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5882                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5883                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5884                                die "ERROR: mmal not found"; }
5885 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5886
5887 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5888 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5889                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5890                                die "ERROR: openal not found"; } &&
5891                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5892                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5893 enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5894                                check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5895                                die "ERROR: opencl not found"; } &&
5896                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5897                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5898                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5899 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5900                                check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5901                                check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5902                                check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5903                                die "ERROR: opengl not found."
5904                              }
5905 enabled omx_rpi && enable omx
5906 enabled omx               && { check_header OMX_Core.h ||
5907                                 { ! enabled cross_compile && enabled omx_rpi && {
5908                                     add_cflags -isystem/opt/vc/include/IL ; }
5909                                 check_header OMX_Core.h ; } ||
5910                                die "ERROR: OpenMAX IL headers not found"; }
5911 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5912                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5913                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5914                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5915                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5916                                die "ERROR: openssl not found"; }
5917 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5918
5919 # libdc1394 check
5920 if enabled libdc1394; then
5921     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5922         enable libdc1394_2; } ||
5923     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5924         enable libdc1394_1; } ||
5925     die "ERROR: No version of libdc1394 found "
5926 fi
5927
5928 if enabled gcrypt; then
5929     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5930     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5931         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5932         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5933         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5934             die "ERROR: gcrypt not found"
5935         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5936     else
5937         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5938     fi
5939 fi
5940
5941 disabled sdl && disable sdl2
5942 if ! disabled sdl2; then
5943     SDL2_CONFIG="${cross_prefix}sdl2-config"
5944     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5945         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5946         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5947         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5948     else
5949       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5950         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5951         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5952         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5953         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5954         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5955       fi
5956     fi
5957     if test $target_os = "mingw32"; then
5958         sdl2_libs="$sdl2_libs -mconsole"
5959     fi
5960 fi
5961 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5962
5963 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5964     check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5965     enable securetransport; }
5966
5967 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5968                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5969
5970 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5971 enabled makeinfo \
5972     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5973     && enable makeinfo_html || disable makeinfo_html
5974 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5975 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5976 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5977 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5978
5979 check_header linux/fb.h
5980 check_header linux/videodev.h
5981 check_header linux/videodev2.h
5982 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5983
5984 check_header sys/videoio.h
5985 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5986
5987 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5988 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5989 # w32api 3.12 had it defined wrong
5990 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5991
5992 check_type "dshow.h" IBaseFilter
5993
5994 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5995 { check_header dev/bktr/ioctl_meteor.h &&
5996   check_header dev/bktr/ioctl_bt848.h; } ||
5997 { check_header machine/ioctl_meteor.h &&
5998   check_header machine/ioctl_bt848.h; } ||
5999 { check_header dev/video/meteor/ioctl_meteor.h &&
6000   check_header dev/video/bktr/ioctl_bt848.h; } ||
6001 check_header dev/ic/bt8xx.h
6002
6003 check_header sndio.h
6004 if check_struct sys/soundcard.h audio_buf_info bytes; then
6005     enable_safe sys/soundcard.h
6006 else
6007     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6008     #include <sys/soundcard.h>
6009     audio_buf_info abc;
6010 EOF
6011 fi
6012 check_header soundcard.h
6013
6014 enabled_any alsa_indev alsa_outdev &&
6015     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
6016
6017 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
6018     check_func jack_port_get_latency_range -ljack
6019
6020 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
6021
6022 if enabled libcdio; then
6023     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6024     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6025     die "ERROR: No usable libcdio/cdparanoia found"
6026 fi
6027
6028 if ! disabled libxcb; then
6029     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6030         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6031     } && enable libxcb
6032
6033 if enabled libxcb; then
6034     disabled libxcb_shm || {
6035         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6036             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6037         } && check_header sys/shm.h && enable libxcb_shm; }
6038
6039     disabled libxcb_xfixes || {
6040         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6041             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6042         } && enable libxcb_xfixes; }
6043
6044     disabled libxcb_shape || {
6045         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6046             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6047         } && enable libxcb_shape; }
6048
6049     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6050     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6051 fi
6052 fi
6053
6054 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6055
6056 enabled dxva2api_h &&
6057     check_cc <<EOF && enable dxva2api_cobj
6058 #define _WIN32_WINNT 0x0600
6059 #define COBJMACROS
6060 #include <windows.h>
6061 #include <d3d9.h>
6062 #include <dxva2api.h>
6063 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6064 EOF
6065
6066 enabled vaapi &&
6067     check_lib va/va.h vaInitialize -lva ||
6068     disable vaapi
6069
6070 enabled vaapi &&
6071     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6072     disable vaapi
6073
6074 enabled vaapi &&
6075     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6076     enable vaapi_drm
6077
6078 enabled vaapi &&
6079     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11 &&
6080     enable vaapi_x11
6081
6082 enabled vdpau &&
6083     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6084     disable vdpau
6085
6086 enabled vdpau &&
6087     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11 &&
6088     enable vdpau_x11
6089
6090 if enabled x86; then
6091     case $target_os in
6092         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6093             ;;
6094         *)
6095             disable cuda cuvid nvenc
6096             ;;
6097     esac
6098 else
6099     disable cuda cuvid nvenc
6100 fi
6101
6102 enabled nvenc &&
6103     check_cc -I$source_path <<EOF || disable nvenc
6104 #include "compat/nvenc/nvEncodeAPI.h"
6105 NV_ENCODE_API_FUNCTION_LIST flist;
6106 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6107 int main(void) { return 0; }
6108 EOF
6109
6110 # Funny iconv installations are not unusual, so check it after all flags have been set
6111 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
6112
6113 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6114
6115 # add some useful compiler flags if supported
6116 check_cflags -Wdeclaration-after-statement
6117 check_cflags -Wall
6118 check_cflags -Wdisabled-optimization
6119 check_cflags -Wpointer-arith
6120 check_cflags -Wredundant-decls
6121 check_cflags -Wwrite-strings
6122 check_cflags -Wtype-limits
6123 check_cflags -Wundef
6124 check_cflags -Wmissing-prototypes
6125 check_cflags -Wno-pointer-to-int-cast
6126 check_cflags -Wstrict-prototypes
6127 check_cflags -Wempty-body
6128 enabled extra_warnings && check_cflags -Winline
6129 enabled extra_warnings && check_cflags -Wcast-qual
6130
6131 check_disable_warning(){
6132     warning_flag=-W${1#-Wno-}
6133     test_cflags $warning_flag && add_cflags $1
6134 }
6135
6136 check_disable_warning -Wno-parentheses
6137 check_disable_warning -Wno-switch
6138 check_disable_warning -Wno-format-zero-length
6139 check_disable_warning -Wno-pointer-sign
6140 check_disable_warning -Wno-unused-const-variable
6141
6142 # add some linker flags
6143 check_ldflags -Wl,--warn-common
6144 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6145 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6146 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6147 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6148
6149 # add some strip flags
6150 # -wN '..@*' is more selective than -x, but not available everywhere.
6151 check_stripflags -wN \'..@*\' || check_stripflags -x
6152
6153 enabled neon_clobber_test &&
6154     check_ldflags -Wl,--wrap,avcodec_open2              \
6155                   -Wl,--wrap,avcodec_decode_audio4      \
6156                   -Wl,--wrap,avcodec_decode_video2      \
6157                   -Wl,--wrap,avcodec_decode_subtitle2   \
6158                   -Wl,--wrap,avcodec_encode_audio2      \
6159                   -Wl,--wrap,avcodec_encode_video2      \
6160                   -Wl,--wrap,avcodec_encode_subtitle    \
6161                   -Wl,--wrap,avcodec_send_packet        \
6162                   -Wl,--wrap,avcodec_receive_packet     \
6163                   -Wl,--wrap,avcodec_send_frame         \
6164                   -Wl,--wrap,avcodec_receive_frame      \
6165                   -Wl,--wrap,swr_convert                \
6166                   -Wl,--wrap,avresample_convert ||
6167     disable neon_clobber_test
6168
6169 enabled xmm_clobber_test &&
6170     check_ldflags -Wl,--wrap,avcodec_open2              \
6171                   -Wl,--wrap,avcodec_decode_audio4      \
6172                   -Wl,--wrap,avcodec_decode_video2      \
6173                   -Wl,--wrap,avcodec_decode_subtitle2   \
6174                   -Wl,--wrap,avcodec_encode_audio2      \
6175                   -Wl,--wrap,avcodec_encode_video2      \
6176                   -Wl,--wrap,avcodec_encode_subtitle    \
6177                   -Wl,--wrap,avcodec_send_packet        \
6178                   -Wl,--wrap,avcodec_receive_packet     \
6179                   -Wl,--wrap,avcodec_send_frame         \
6180                   -Wl,--wrap,avcodec_receive_frame      \
6181                   -Wl,--wrap,swr_convert                \
6182                   -Wl,--wrap,avresample_convert         \
6183                   -Wl,--wrap,sws_scale ||
6184     disable xmm_clobber_test
6185
6186 check_ld "cc" <<EOF && enable proper_dce
6187 extern const int array[512];
6188 static inline int func(void) { return array[0]; }
6189 int main(void) { return 0; }
6190 EOF
6191
6192 if enabled proper_dce; then
6193     echo "X { local: *; };" > $TMPV
6194     if test_ldflags -Wl,${version_script},$TMPV; then
6195         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6196         check_cc <<EOF && enable symver_asm_label
6197 void ff_foo(void) __asm__ ("av_foo@VERSION");
6198 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6199 EOF
6200         check_cc <<EOF && enable symver_gnu_asm
6201 __asm__(".symver ff_foo,av_foo@VERSION");
6202 void ff_foo(void) {}
6203 EOF
6204     fi
6205 fi
6206
6207 if [ -z "$optflags" ]; then
6208     if enabled small; then
6209         optflags=$cflags_size
6210     elif enabled optimizations; then
6211         optflags=$cflags_speed
6212     else
6213         optflags=$cflags_noopt
6214     fi
6215 fi
6216
6217 check_optflags(){
6218     check_cflags "$@"
6219     enabled lto && check_ldflags "$@"
6220 }
6221
6222
6223 if enabled lto; then
6224     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6225     check_cflags  -flto
6226     check_ldflags -flto $cpuflags
6227     disable inline_asm_direct_symbol_refs
6228 fi
6229
6230 check_optflags $optflags
6231 check_optflags -fno-math-errno
6232 check_optflags -fno-signed-zeros
6233
6234 enabled ftrapv && check_cflags -ftrapv
6235
6236 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6237 int x;
6238 EOF
6239
6240
6241 if enabled icc; then
6242     # Just warnings, no remarks
6243     check_cflags -w1
6244     # -wd: Disable following warnings
6245     # 144, 167, 556: -Wno-pointer-sign
6246     # 188: enumerated type mixed with another type
6247     # 1292: attribute "foo" ignored
6248     # 1419: external declaration in primary source file
6249     # 10006: ignoring unknown option -fno-signed-zeros
6250     # 10148: ignoring unknown option -Wno-parentheses
6251     # 10156: ignoring option '-W'; no argument required
6252     # 13200: No EMMS instruction before call to function
6253     # 13203: No EMMS instruction before return from function
6254     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6255     # 11030: Warning unknown option --as-needed
6256     # 10156: ignoring option '-export'; no argument required
6257     check_ldflags -wd10156,11030
6258     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6259     enable ebp_available
6260     # The test above does not test linking
6261     enabled lto && disable symver_asm_label
6262     if enabled x86_32; then
6263         icc_version=$($cc -dumpversion)
6264         test ${icc_version%%.*} -ge 11 &&
6265             check_cflags -falign-stack=maintain-16-byte ||
6266             disable aligned_stack
6267     fi
6268 elif enabled ccc; then
6269     # disable some annoying warnings
6270     add_cflags -msg_disable bitnotint
6271     add_cflags -msg_disable mixfuncvoid
6272     add_cflags -msg_disable nonstandcast
6273     add_cflags -msg_disable unsupieee
6274 elif enabled gcc; then
6275     check_optflags -fno-tree-vectorize
6276     check_cflags -Werror=format-security
6277     check_cflags -Werror=implicit-function-declaration
6278     check_cflags -Werror=missing-prototypes
6279     check_cflags -Werror=return-type
6280     check_cflags -Werror=vla
6281     check_cflags -Wformat
6282     check_cflags -fdiagnostics-color=auto
6283     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6284 elif enabled llvm_gcc; then
6285     check_cflags -mllvm -stack-alignment=16
6286 elif enabled clang; then
6287     check_cflags -mllvm -stack-alignment=16
6288     check_cflags -mstack-alignment=16
6289     check_cflags -Qunused-arguments
6290     check_cflags -Werror=implicit-function-declaration
6291     check_cflags -Werror=missing-prototypes
6292     check_cflags -Werror=return-type
6293 elif enabled cparser; then
6294     add_cflags -Wno-missing-variable-declarations
6295     add_cflags -Wno-empty-statement
6296 elif enabled armcc; then
6297     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6298     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6299     # 2523: use of inline assembly is deprecated
6300     add_cflags -W${armcc_opt},--diag_suppress=2523
6301     add_cflags -W${armcc_opt},--diag_suppress=1207
6302     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6303     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6304     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6305     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6306 elif enabled tms470; then
6307     add_cflags -pds=824 -pds=837
6308     disable inline_asm
6309 elif enabled pathscale; then
6310     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6311 elif enabled_any msvc icl; then
6312     enabled x86_32 && disable aligned_stack
6313     enabled_all x86_32 debug && add_cflags -Oy-
6314     enabled debug && add_ldflags -debug
6315     enable pragma_deprecated
6316     if enabled icl; then
6317         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6318         # (correctly) on icl 13.x.
6319         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6320             add_cflags -Qansi-alias
6321         # Some inline asm is not compilable in debug
6322         if enabled debug; then
6323             disable ebp_available
6324             disable ebx_available
6325         fi
6326     fi
6327     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6328     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6329     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6330     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6331     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6332     # MSVC 2013 and newer can handle it fine.
6333     # If this declspec fails, force including stdlib.h before the restrict redefinition
6334     # happens in config.h.
6335     if [ $_restrict != restrict ]; then
6336         check_cc <<EOF || add_cflags -FIstdlib.h
6337 __declspec($_restrict) void* foo(int);
6338 EOF
6339     fi
6340     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6341     # Issue has been fixed in MSVC v19.00.24218.
6342     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6343         check_cflags -d2SSAOptimizer-
6344     # enable utf-8 source processing on VS2015 U2 and newer
6345     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6346         add_cflags -utf-8
6347 fi
6348
6349 for pfx in "" host_; do
6350     varname=${pfx%_}cc_type
6351     eval "type=\$$varname"
6352     if [ $type = "msvc" ]; then
6353         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6354 static inline int foo(int a) { return a; }
6355 EOF
6356     fi
6357 done
6358
6359 case $as_type in
6360     clang)
6361         add_asflags -Qunused-arguments
6362     ;;
6363 esac
6364
6365 case $ld_type in
6366     clang)
6367         check_ldflags -Qunused-arguments
6368     ;;
6369 esac
6370
6371 case $target_os in
6372     osf1)
6373         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6374     ;;
6375     plan9)
6376         add_cppflags -Dmain=plan9_main
6377     ;;
6378 esac
6379
6380 enable frame_thread_encoder
6381
6382 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6383
6384 check_deps $CONFIG_LIST       \
6385            $CONFIG_EXTRA      \
6386            $HAVE_LIST         \
6387            $ALL_COMPONENTS    \
6388
6389 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"
6390
6391
6392 if test $target_os = "haiku"; then
6393     disable memalign
6394     disable posix_memalign
6395 fi
6396
6397 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6398     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6399     enable dxva2_lib
6400
6401 # add_dep lib dep
6402 # -> enable ${lib}_deps_${dep}
6403 # -> add $dep to ${lib}_deps only once
6404 add_dep() {
6405     lib=$1
6406     dep=$2
6407     enabled "${lib}_deps_${dep}" && return 0
6408     enable  "${lib}_deps_${dep}"
6409     prepend "${lib}_deps" $dep
6410 }
6411
6412 # merge deps lib components
6413 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6414 merge_deps() {
6415     lib=$1
6416     shift
6417     for comp in $*; do
6418         enabled $comp || continue
6419         eval "dep=\"\$${comp}_deps\""
6420         for d in $dep; do
6421             add_dep $lib $d
6422         done
6423     done
6424 }
6425
6426 merge_deps libavfilter $FILTER_LIST
6427
6428 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6429
6430 for thread in $THREADS_LIST; do
6431     if enabled $thread; then
6432         test -n "$thread_type" &&
6433             die "ERROR: Only one thread type must be selected." ||
6434             thread_type="$thread"
6435     fi
6436 done
6437
6438 if disabled stdatomic_h; then
6439     if enabled atomics_gcc; then
6440         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6441     elif enabled atomics_win32; then
6442         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6443     elif enabled atomics_suncc; then
6444         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6445     elif enabled pthreads; then
6446         add_compat atomics/pthread/stdatomic.o
6447         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6448     else
6449         enabled threads && die "Threading is enabled, but no atomics are available"
6450         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6451     fi
6452 fi
6453
6454 # Check if requested libraries were found.
6455 for lib in $AUTODETECT_LIBS; do
6456     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6457 done
6458
6459 enabled zlib && add_cppflags -DZLIB_CONST
6460
6461 # conditional library dependencies, in linking order
6462 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6463 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6464 enabled aresample_filter    && prepend avfilter_deps "swresample"
6465 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6466 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6467 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6468 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6469 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6470 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6471 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6472 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6473 enabled pan_filter          && prepend avfilter_deps "swresample"
6474 enabled pp_filter           && prepend avfilter_deps "postproc"
6475 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6476 enabled resample_filter && prepend avfilter_deps "avresample"
6477 enabled sab_filter          && prepend avfilter_deps "swscale"
6478 enabled scale_filter    && prepend avfilter_deps "swscale"
6479 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6480 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6481 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6482 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6483 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6484 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6485 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6486 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6487 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6488
6489 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6490
6491 enabled opus_decoder    && prepend avcodec_deps "swresample"
6492
6493 expand_deps(){
6494     lib_deps=${1}_deps
6495     eval "deps=\$$lib_deps"
6496     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6497     unique $lib_deps
6498 }
6499
6500 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6501 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6502
6503 map 'expand_deps $v' $LIBRARY_LIST
6504
6505 license="LGPL version 2.1 or later"
6506 if enabled nonfree; then
6507     license="nonfree and unredistributable"
6508 elif enabled gplv3; then
6509     license="GPL version 3 or later"
6510 elif enabled lgplv3; then
6511     license="LGPL version 3 or later"
6512 elif enabled gpl; then
6513     license="GPL version 2 or later"
6514 fi
6515
6516 if test "$quiet" != "yes"; then
6517
6518 echo "install prefix            $prefix"
6519 echo "source path               $source_path"
6520 echo "C compiler                $cc"
6521 echo "C library                 $libc_type"
6522 if test "$host_cc" != "$cc"; then
6523     echo "host C compiler           $host_cc"
6524     echo "host C library            $host_libc_type"
6525 fi
6526 echo "ARCH                      $arch ($cpu)"
6527 if test "$build_suffix" != ""; then
6528     echo "build suffix              $build_suffix"
6529 fi
6530 if test "$progs_suffix" != ""; then
6531     echo "progs suffix              $progs_suffix"
6532 fi
6533 if test "$extra_version" != ""; then
6534     echo "version string suffix     $extra_version"
6535 fi
6536 echo "big-endian                ${bigendian-no}"
6537 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6538 if enabled x86; then
6539     echo "${yasmexe}                      ${yasm-no}"
6540     echo "MMX enabled               ${mmx-no}"
6541     echo "MMXEXT enabled            ${mmxext-no}"
6542     echo "3DNow! enabled            ${amd3dnow-no}"
6543     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6544     echo "SSE enabled               ${sse-no}"
6545     echo "SSSE3 enabled             ${ssse3-no}"
6546     echo "AESNI enabled             ${aesni-no}"
6547     echo "AVX enabled               ${avx-no}"
6548     echo "XOP enabled               ${xop-no}"
6549     echo "FMA3 enabled              ${fma3-no}"
6550     echo "FMA4 enabled              ${fma4-no}"
6551     echo "i686 features enabled     ${i686-no}"
6552     echo "CMOV is fast              ${fast_cmov-no}"
6553     echo "EBX available             ${ebx_available-no}"
6554     echo "EBP available             ${ebp_available-no}"
6555 fi
6556 if enabled aarch64; then
6557     echo "NEON enabled              ${neon-no}"
6558     echo "VFP enabled               ${vfp-no}"
6559 fi
6560 if enabled arm; then
6561     echo "ARMv5TE enabled           ${armv5te-no}"
6562     echo "ARMv6 enabled             ${armv6-no}"
6563     echo "ARMv6T2 enabled           ${armv6t2-no}"
6564     echo "VFP enabled               ${vfp-no}"
6565     echo "NEON enabled              ${neon-no}"
6566     echo "THUMB enabled             ${thumb-no}"
6567 fi
6568 if enabled mips; then
6569     echo "MIPS FPU enabled          ${mipsfpu-no}"
6570     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6571     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6572     echo "MIPS MSA enabled          ${msa-no}"
6573     echo "LOONGSON MMI enabled      ${mmi-no}"
6574 fi
6575 if enabled ppc; then
6576     echo "AltiVec enabled           ${altivec-no}"
6577     echo "VSX enabled               ${vsx-no}"
6578     echo "POWER8 enabled            ${power8-no}"
6579     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6580     echo "dcbzl available           ${dcbzl-no}"
6581 fi
6582 echo "debug symbols             ${debug-no}"
6583 echo "strip symbols             ${stripping-no}"
6584 echo "optimize for size         ${small-no}"
6585 echo "optimizations             ${optimizations-no}"
6586 echo "static                    ${static-no}"
6587 echo "shared                    ${shared-no}"
6588 echo "postprocessing support    ${postproc-no}"
6589 echo "network support           ${network-no}"
6590 echo "threading support         ${thread_type-no}"
6591 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6592 echo "texi2html enabled         ${texi2html-no}"
6593 echo "perl enabled              ${perl-no}"
6594 echo "pod2man enabled           ${pod2man-no}"
6595 echo "makeinfo enabled          ${makeinfo-no}"
6596 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6597 test -n "$random_seed" &&
6598     echo "random seed               ${random_seed}"
6599 echo
6600
6601 echo "External libraries:"
6602 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6603 echo
6604
6605 echo "External libraries providing hardware acceleration:"
6606 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6607 echo
6608
6609 echo "Libraries:"
6610 print_enabled '' $LIBRARY_LIST | print_in_columns
6611 echo
6612
6613 echo "Programs:"
6614 print_enabled '' $PROGRAM_LIST | print_in_columns
6615 echo
6616
6617 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6618     echo "Enabled ${type}s:"
6619     eval list=\$$(toupper $type)_LIST
6620     print_enabled '_*' $list | print_in_columns
6621     echo
6622 done
6623
6624 echo "License: $license"
6625
6626 echo "Creating configuration files ..."
6627
6628 fi # test "$quiet" != "yes"
6629
6630 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6631
6632 enabled stripping || strip="echo skipping strip"
6633
6634 config_files="$TMPH config.mak doc/config.texi"
6635
6636 cat > config.mak <<EOF
6637 # Automatically generated by configure - do not modify!
6638 ifndef FFMPEG_CONFIG_MAK
6639 FFMPEG_CONFIG_MAK=1
6640 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6641 prefix=$prefix
6642 LIBDIR=\$(DESTDIR)$libdir
6643 SHLIBDIR=\$(DESTDIR)$shlibdir
6644 INCDIR=\$(DESTDIR)$incdir
6645 BINDIR=\$(DESTDIR)$bindir
6646 DATADIR=\$(DESTDIR)$datadir
6647 DOCDIR=\$(DESTDIR)$docdir
6648 MANDIR=\$(DESTDIR)$mandir
6649 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6650 INSTALL_NAME_DIR=$install_name_dir
6651 SRC_PATH=$source_path
6652 SRC_LINK=$source_link
6653 ifndef MAIN_MAKEFILE
6654 SRC_PATH:=\$(SRC_PATH:.%=..%)
6655 endif
6656 CC_IDENT=$cc_ident
6657 ARCH=$arch
6658 INTRINSICS=$intrinsics
6659 CC=$cc
6660 CXX=$cxx
6661 AS=$as
6662 OBJCC=$objcc
6663 LD=$ld
6664 DEPCC=$dep_cc
6665 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6666 DEPAS=$as
6667 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6668 YASM=$yasmexe
6669 DEPYASM=$yasmexe
6670 AR=$ar
6671 ARFLAGS=$arflags
6672 AR_O=$ar_o
6673 RANLIB=$ranlib
6674 STRIP=$strip
6675 CP=cp -p
6676 LN_S=$ln_s
6677 CPPFLAGS=$CPPFLAGS
6678 CFLAGS=$CFLAGS
6679 CXXFLAGS=$CXXFLAGS
6680 OBJCFLAGS=$OBJCFLAGS
6681 ASFLAGS=$ASFLAGS
6682 AS_C=$AS_C
6683 AS_O=$AS_O
6684 OBJCC_C=$OBJCC_C
6685 OBJCC_E=$OBJCC_E
6686 OBJCC_O=$OBJCC_O
6687 CC_C=$CC_C
6688 CC_E=$CC_E
6689 CC_O=$CC_O
6690 CXX_C=$CXX_C
6691 CXX_O=$CXX_O
6692 LD_O=$LD_O
6693 LD_LIB=$LD_LIB
6694 LD_PATH=$LD_PATH
6695 DLLTOOL=$dlltool
6696 WINDRES=$windres
6697 DEPWINDRES=$dep_cc
6698 DOXYGEN=$doxygen
6699 LDFLAGS=$LDFLAGS
6700 LDEXEFLAGS=$LDEXEFLAGS
6701 LDLIBFLAGS=$LDLIBFLAGS
6702 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6703 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6704 YASMFLAGS=$YASMFLAGS
6705 BUILDSUF=$build_suffix
6706 PROGSSUF=$progs_suffix
6707 FULLNAME=$FULLNAME
6708 LIBPREF=$LIBPREF
6709 LIBSUF=$LIBSUF
6710 LIBNAME=$LIBNAME
6711 SLIBPREF=$SLIBPREF
6712 SLIBSUF=$SLIBSUF
6713 EXESUF=$EXESUF
6714 EXTRA_VERSION=$extra_version
6715 CCDEP=$CCDEP
6716 CXXDEP=$CXXDEP
6717 CCDEP_FLAGS=$CCDEP_FLAGS
6718 ASDEP=$ASDEP
6719 ASDEP_FLAGS=$ASDEP_FLAGS
6720 CC_DEPFLAGS=$CC_DEPFLAGS
6721 AS_DEPFLAGS=$AS_DEPFLAGS
6722 HOSTCC=$host_cc
6723 HOSTLD=$host_ld
6724 HOSTCFLAGS=$host_cflags
6725 HOSTCPPFLAGS=$host_cppflags
6726 HOSTEXESUF=$HOSTEXESUF
6727 HOSTLDFLAGS=$host_ldflags
6728 HOSTLIBS=$host_libs
6729 DEPHOSTCC=$host_cc
6730 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6731 HOSTCCDEP=$HOSTCCDEP
6732 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6733 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6734 HOSTCC_C=$HOSTCC_C
6735 HOSTCC_O=$HOSTCC_O
6736 HOSTLD_O=$HOSTLD_O
6737 TARGET_EXEC=$target_exec $target_exec_args
6738 TARGET_PATH=$target_path
6739 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6740 CFLAGS-ffplay=${sdl2_cflags}
6741 ZLIB=$($ldflags_filter -lz)
6742 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6743 EXTRALIBS=$extralibs
6744 COMPAT_OBJS=$compat_objs
6745 EXEOBJS=$exeobjs
6746 INSTALL=$install
6747 LIBTARGET=${LIBTARGET}
6748 SLIBNAME=${SLIBNAME}
6749 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6750 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6751 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6752 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6753 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6754 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6755 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6756 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6757 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6758 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6759 NOREDZONE_FLAGS=$noredzone_flags
6760 EOF
6761
6762 get_version(){
6763     lcname=lib${1}
6764     name=$(toupper $lcname)
6765     file=$source_path/$lcname/version.h
6766     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6767     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6768     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6769     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6770     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6771     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6772 }
6773
6774 map 'get_version $v' $LIBRARY_LIST
6775
6776 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6777
6778 print_program_libs(){
6779     eval "program_libs=\$${1}_libs"
6780     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6781 }
6782
6783 map 'print_program_libs $v' $PROGRAM_LIST
6784
6785 cat > $TMPH <<EOF
6786 /* Automatically generated by configure - do not modify! */
6787 #ifndef FFMPEG_CONFIG_H
6788 #define FFMPEG_CONFIG_H
6789 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6790 #define FFMPEG_LICENSE "$(c_escape $license)"
6791 #define CONFIG_THIS_YEAR 2017
6792 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6793 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6794 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6795 #define av_restrict $_restrict
6796 #define EXTERN_PREFIX "${extern_prefix}"
6797 #define EXTERN_ASM ${extern_prefix}
6798 #define BUILDSUF "$build_suffix"
6799 #define SLIBSUF "$SLIBSUF"
6800 #define HAVE_MMX2 HAVE_MMXEXT
6801 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6802 EOF
6803
6804 test -n "$assert_level" &&
6805     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6806
6807 test -n "$malloc_prefix" &&
6808     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6809
6810 if enabled yasm; then
6811     append config_files $TMPASM
6812     printf '' >$TMPASM
6813 fi
6814
6815 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6816
6817
6818 mkdir -p doc
6819 mkdir -p tests
6820 mkdir -p tests/api
6821 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6822
6823 print_config ARCH_   "$config_files" $ARCH_LIST
6824 print_config HAVE_   "$config_files" $HAVE_LIST
6825 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6826                                      $CONFIG_EXTRA      \
6827                                      $ALL_COMPONENTS    \
6828
6829 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6830 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6831
6832 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6833 cp_if_changed $TMPH config.h
6834 touch .config
6835
6836 enabled yasm && cp_if_changed $TMPASM config.asm
6837
6838 cat > $TMPH <<EOF
6839 /* Generated by ffconf */
6840 #ifndef AVUTIL_AVCONFIG_H
6841 #define AVUTIL_AVCONFIG_H
6842 EOF
6843
6844 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6845
6846 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6847
6848 cp_if_changed $TMPH libavutil/avconfig.h
6849
6850 # generate the lists of enabled components
6851 print_enabled_components(){
6852     file=$1
6853     struct_name=$2
6854     name=$3
6855     shift 3
6856     echo "static const $struct_name *$name[] = {" > $TMPH
6857     for c in $*; do
6858         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6859     done
6860     echo "    NULL };" >> $TMPH
6861     cp_if_changed $TMPH $file
6862 }
6863
6864 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6865 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6866
6867 if test -n "$WARNINGS"; then
6868     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6869     enabled fatal_warnings && exit 1
6870 fi
6871
6872 # build pkg-config files
6873
6874 lib_version(){
6875     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6876 }
6877
6878 pkgconfig_generate(){
6879     name=$1
6880     shortname=${name#lib}${build_suffix}
6881     comment=$2
6882     version=$3
6883     libs=$4
6884     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6885     requires=${requires%, }
6886     enabled ${name#lib} || return 0
6887     mkdir -p $name
6888     cat <<EOF > $name/$name${build_suffix}.pc
6889 prefix=$prefix
6890 exec_prefix=\${prefix}
6891 libdir=$libdir
6892 includedir=$incdir
6893
6894 Name: $name
6895 Description: $comment
6896 Version: $version
6897 Requires: $(enabled shared || echo $requires)
6898 Requires.private: $(enabled shared && echo $requires)
6899 Conflicts:
6900 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6901 Libs.private: $(enabled shared && echo $libs)
6902 Cflags: -I\${includedir}
6903 EOF
6904
6905 mkdir -p doc/examples/pc-uninstalled
6906 includedir=${source_path}
6907 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6908     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6909 prefix=
6910 exec_prefix=
6911 libdir=\${pcfiledir}/../../../$name
6912 includedir=${includedir}
6913
6914 Name: $name
6915 Description: $comment
6916 Version: $version
6917 Requires: $requires
6918 Conflicts:
6919 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6920 Cflags: -I\${includedir}
6921 EOF
6922 }
6923
6924 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6925 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6926 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6927 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6928 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6929 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6930 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6931 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6932 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"