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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --enable-rpath           use rpath to allow installing libraries in paths
  91                            not part of the dynamic linker search path
  92
  93 Licensing options:
  94   --enable-gpl             allow use of GPL code, the resulting libs
  95                            and binaries will be under GPL [no]
  96   --enable-version3        upgrade (L)GPL to version 3 [no]
  97   --enable-nonfree         allow use of nonfree code, the resulting libs
  98                            and binaries will be unredistributable [no]
  99
 100 Configuration options:
 101   --disable-static         do not build static libraries [no]
 102   --enable-shared          build shared libraries [no]
 103   --enable-small           optimize for size instead of speed
 104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 105   --enable-gray            enable full grayscale support (slower color)
 106   --disable-swscale-alpha  disable alpha channel support in swscale
 107   --disable-all            disable building components, libraries and programs
 108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 109   --enable-raise-major     increase major version numbers in sonames [no]
 110
 111 Program options:
 112   --disable-programs       do not build command line programs
 113   --disable-ffmpeg         disable ffmpeg build
 114   --disable-ffplay         disable ffplay build
 115   --disable-ffprobe        disable ffprobe build
 116   --disable-ffserver       disable ffserver build
 117
 118 Documentation options:
 119   --disable-doc            do not build documentation
 120   --disable-htmlpages      do not build HTML documentation pages
 121   --disable-manpages       do not build man documentation pages
 122   --disable-podpages       do not build POD documentation pages
 123   --disable-txtpages       do not build text documentation pages
 124
 125 Component options:
 126   --disable-avdevice       disable libavdevice build
 127   --disable-avcodec        disable libavcodec build
 128   --disable-avformat       disable libavformat build
 129   --disable-avutil         disable libavutil build
 130   --disable-swresample     disable libswresample build
 131   --disable-swscale        disable libswscale build
 132   --disable-postproc       disable libpostproc build
 133   --disable-avfilter       disable libavfilter build
 134   --enable-avresample      enable libavresample build [no]
 135   --disable-pthreads       disable pthreads [auto]
 136   --disable-w32threads     disable Win32 threads [auto]
 137   --disable-os2threads     disable OS/2 threads [auto]
 138   --disable-network        disable network support [no]
 139   --disable-dct            disable DCT code
 140   --disable-dwt            disable DWT code
 141   --disable-error-resilience disable error resilience code
 142   --disable-lsp            disable LSP code
 143   --disable-lzo            disable LZO decoder code
 144   --disable-mdct           disable MDCT code
 145   --disable-rdft           disable RDFT code
 146   --disable-fft            disable FFT code
 147
 148 Hardware accelerators:
 149   --disable-dxva2          disable DXVA2 code [autodetect]
 150   --disable-vaapi          disable VAAPI code [autodetect]
 151   --disable-vda            disable VDA code [autodetect]
 152   --disable-vdpau          disable VDPAU code [autodetect]
 153
 154 Individual component options:
 155   --disable-everything     disable all components listed below
 156   --disable-encoder=NAME   disable encoder NAME
 157   --enable-encoder=NAME    enable encoder NAME
 158   --disable-encoders       disable all encoders
 159   --disable-decoder=NAME   disable decoder NAME
 160   --enable-decoder=NAME    enable decoder NAME
 161   --disable-decoders       disable all decoders
 162   --disable-hwaccel=NAME   disable hwaccel NAME
 163   --enable-hwaccel=NAME    enable hwaccel NAME
 164   --disable-hwaccels       disable all hwaccels
 165   --disable-muxer=NAME     disable muxer NAME
 166   --enable-muxer=NAME      enable muxer NAME
 167   --disable-muxers         disable all muxers
 168   --disable-demuxer=NAME   disable demuxer NAME
 169   --enable-demuxer=NAME    enable demuxer NAME
 170   --disable-demuxers       disable all demuxers
 171   --enable-parser=NAME     enable parser NAME
 172   --disable-parser=NAME    disable parser NAME
 173   --disable-parsers        disable all parsers
 174   --enable-bsf=NAME        enable bitstream filter NAME
 175   --disable-bsf=NAME       disable bitstream filter NAME
 176   --disable-bsfs           disable all bitstream filters
 177   --enable-protocol=NAME   enable protocol NAME
 178   --disable-protocol=NAME  disable protocol NAME
 179   --disable-protocols      disable all protocols
 180   --enable-indev=NAME      enable input device NAME
 181   --disable-indev=NAME     disable input device NAME
 182   --disable-indevs         disable input devices
 183   --enable-outdev=NAME     enable output device NAME
 184   --disable-outdev=NAME    disable output device NAME
 185   --disable-outdevs        disable output devices
 186   --disable-devices        disable all devices
 187   --enable-filter=NAME     enable filter NAME
 188   --disable-filter=NAME    disable filter NAME
 189   --disable-filters        disable all filters
 190
 191 External library support:
 192   --enable-avisynth        enable reading of AviSynth script files [no]
 193   --disable-bzlib          disable bzlib [autodetect]
 194   --enable-fontconfig      enable fontconfig
 195   --enable-frei0r          enable frei0r video filtering
 196   --enable-gnutls          enable gnutls [no]
 197   --disable-iconv          disable iconv [autodetect]
 198   --enable-ladspa          enable LADSPA audio filtering
 199   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 200   --enable-libass          enable libass subtitles rendering [no]
 201   --enable-libbluray       enable BluRay reading using libbluray [no]
 202   --enable-libcaca         enable textual display using libcaca
 203   --enable-libcelt         enable CELT decoding via libcelt [no]
 204   --enable-libcdio         enable audio CD grabbing with libcdio
 205   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 206                            and libraw1394 [no]
 207   --enable-libfaac         enable AAC encoding via libfaac [no]
 208   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 209   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 210   --enable-libfreetype     enable libfreetype [no]
 211   --enable-libgme          enable Game Music Emu via libgme [no]
 212   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 213   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 214   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 215   --enable-libmodplug      enable ModPlug via libmodplug [no]
 216   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 217   --enable-libnut          enable NUT (de)muxing via libnut,
 218                            native (de)muxer exists [no]
 219   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 220   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 221   --enable-libopencv       enable video filtering via libopencv [no]
 222   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 223   --enable-libopus         enable Opus decoding via libopus [no]
 224   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 225   --enable-libquvi         enable quvi input via libquvi [no]
 226   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 227   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 228   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 229   --enable-libsoxr         enable Include libsoxr resampling [no]
 230   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 231   --enable-libssh          enable SFTP protocol via libssh [no]
 232   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 233   --enable-libtheora       enable Theora encoding via libtheora [no]
 234   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 235   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 236   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 237   --enable-libvidstab      enable video stabilization using vid.stab [no]
 238   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 239   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 240   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 241                            native implementation exists [no]
 242   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 243   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 244   --enable-libwebp         enable WebP encoding via libwebp [no]
 245   --enable-libx264         enable H.264 encoding via x264 [no]
 246   --enable-libx265         enable HEVC encoding via x265 [no]
 247   --enable-libxavs         enable AVS encoding via xavs [no]
 248   --enable-libxvid         enable Xvid encoding via xvidcore,
 249                            native MPEG-4/Xvid encoder exists [no]
 250   --enable-libzmq          enable message passing via libzmq [no]
 251   --enable-libzvbi         enable teletext support via libzvbi [no]
 252   --enable-decklink        enable Blackmagick DeckLink output [no]
 253   --enable-openal          enable OpenAL 1.1 capture support [no]
 254   --enable-opencl          enable OpenCL code
 255   --enable-opengl          enable OpenGL rendering [no]
 256   --enable-openssl         enable openssl [no]
 257   --enable-x11grab         enable X11 grabbing [no]
 258   --disable-xlib           disable xlib [autodetect]
 259   --disable-zlib           disable zlib [autodetect]
 260
 261 Toolchain options:
 262   --arch=ARCH              select architecture [$arch]
 263   --cpu=CPU                select the minimum required CPU (affects
 264                            instruction selection, may crash on older CPUs)
 265   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 266   --progs-suffix=SUFFIX    program name suffix []
 267   --enable-cross-compile   assume a cross-compiler is used
 268   --sysroot=PATH           root of cross-build tree
 269   --sysinclude=PATH        location of cross-build system headers
 270   --target-os=OS           compiler targets OS [$target_os]
 271   --target-exec=CMD        command to run executables on target
 272   --target-path=DIR        path to view of build directory on target
 273   --target-samples=DIR     path to samples directory on target
 274   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 275   --toolchain=NAME         set tool defaults according to NAME
 276   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 277   --nm=NM                  use nm tool NM [$nm_default]
 278   --ar=AR                  use archive tool AR [$ar_default]
 279   --as=AS                  use assembler AS [$as_default]
 280   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 281   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 282   --cc=CC                  use C compiler CC [$cc_default]
 283   --cxx=CXX                use C compiler CXX [$cxx_default]
 284   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 285   --ld=LD                  use linker LD [$ld_default]
 286   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
 287   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 288   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 289   --host-cc=HOSTCC         use host C compiler HOSTCC
 290   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 291   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 292   --host-ld=HOSTLD         use host linker HOSTLD
 293   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 294   --host-libs=HLIBS        use libs HLIBS when linking for host
 295   --host-os=OS             compiler host OS [$target_os]
 296   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 297   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 298   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 299   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 300   --extra-version=STRING   version string suffix []
 301   --optflags=OPTFLAGS      override optimization-related compiler flags
 302   --build-suffix=SUFFIX    library name suffix []
 303   --enable-pic             build position-independent code
 304   --enable-thumb           compile for Thumb instruction set
 305   --enable-lto             use link-time optimization
 306
 307 Advanced options (experts only):
 308   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 309   --disable-symver         disable symbol versioning
 310   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 311   --disable-safe-bitstream-reader
 312                            disable buffer boundary checking in bitreaders
 313                            (faster, but may crash)
 314   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 315   --enable-sram            allow use of on-chip SRAM
 316
 317 Optimization options (experts only):
 318   --disable-asm            disable all assembler optimizations
 319   --disable-altivec        disable AltiVec optimizations
 320   --disable-amd3dnow       disable 3DNow! optimizations
 321   --disable-amd3dnowext    disable 3DNow! extended optimizations
 322   --disable-mmx            disable MMX optimizations
 323   --disable-mmxext         disable MMXEXT optimizations
 324   --disable-sse            disable SSE optimizations
 325   --disable-sse2           disable SSE2 optimizations
 326   --disable-sse3           disable SSE3 optimizations
 327   --disable-ssse3          disable SSSE3 optimizations
 328   --disable-sse4           disable SSE4 optimizations
 329   --disable-sse42          disable SSE4.2 optimizations
 330   --disable-avx            disable AVX optimizations
 331   --disable-xop            disable XOP optimizations
 332   --disable-fma3           disable FMA3 optimizations
 333   --disable-fma4           disable FMA4 optimizations
 334   --disable-avx2           disable AVX2 optimizations
 335   --disable-armv5te        disable armv5te optimizations
 336   --disable-armv6          disable armv6 optimizations
 337   --disable-armv6t2        disable armv6t2 optimizations
 338   --disable-vfp            disable VFP optimizations
 339   --disable-neon           disable NEON optimizations
 340   --disable-inline-asm     disable use of inline assembler
 341   --disable-yasm           disable use of yasm assembler
 342   --disable-mips32r2       disable MIPS32R2 optimizations
 343   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 344   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 345   --disable-mipsfpu        disable floating point MIPS optimizations
 346   --disable-fast-unaligned consider unaligned accesses slow
 347
 348 Developer options (useful when working on FFmpeg itself):
 349   --disable-debug          disable debugging symbols
 350   --enable-debug=LEVEL     set the debug level [$debuglevel]
 351   --disable-optimizations  disable compiler optimizations
 352   --enable-extra-warnings  enable more compiler warnings
 353   --disable-stripping      disable stripping of executables and shared libraries
 354   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 355                            2 causes a slowdown at runtime.
 356   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 357   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 358                            leaks and errors, using the specified valgrind binary.
 359                            Cannot be combined with --target-exec
 360   --enable-ftrapv          Trap arithmetic overflows
 361   --samples=PATH           location of test samples for FATE, if not set use
 362                            \$FATE_SAMPLES at make invocation time.
 363   --enable-neon-clobber-test check NEON registers for clobbering (should be
 364                            used only for debugging purposes)
 365   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 366                            should be used only for debugging purposes)
 367   --enable-random          randomly enable/disable components
 368   --disable-random
 369   --enable-random=LIST     randomly enable/disable specific components or
 370   --disable-random=LIST    component groups. LIST is a comma-separated list
 371                            of NAME[:PROB] entries where NAME is a component
 372                            (group) and PROB the probability associated with
 373                            NAME (default 0.5).
 374   --random-seed=VALUE      seed value for --enable/disable-random
 375
 376 NOTE: Object files are built at the place where configure is launched.
 377 EOF
 378   exit 0
 379 }
 380
 381 quotes='""'
 382
 383 log(){
 384     echo "$@" >> $logfile
 385 }
 386
 387 log_file(){
 388     log BEGIN $1
 389     pr -n -t $1 >> $logfile
 390     log END $1
 391 }
 392
 393 echolog(){
 394     log "$@"
 395     echo "$@"
 396 }
 397
 398 warn(){
 399     log "WARNING: $*"
 400     WARNINGS="${WARNINGS}WARNING: $*\n"
 401 }
 402
 403 die(){
 404     echolog "$@"
 405     cat <<EOF
 406
 407 If you think configure made a mistake, make sure you are using the latest
 408 version from Git.  If the latest version fails, report the problem to the
 409 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 410 EOF
 411     if disabled logging; then
 412         cat <<EOF
 413 Rerun configure with logging enabled (do not use --disable-logging), and
 414 include the log this produces with your report.
 415 EOF
 416     else
 417         cat <<EOF
 418 Include the log file "$logfile" produced by configure as this will help
 419 solving the problem.
 420 EOF
 421     fi
 422     exit 1
 423 }
 424
 425 # Avoid locale weirdness, besides we really just want to translate ASCII.
 426 toupper(){
 427     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 428 }
 429
 430 tolower(){
 431     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 432 }
 433
 434 c_escape(){
 435     echo "$*" | sed 's/["\\]/\\\0/g'
 436 }
 437
 438 sh_quote(){
 439     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 440     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 441     echo "$v"
 442 }
 443
 444 cleanws(){
 445     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
 446 }
 447
 448 filter(){
 449     pat=$1
 450     shift
 451     for v; do
 452         eval "case $v in $pat) echo $v ;; esac"
 453     done
 454 }
 455
 456 filter_out(){
 457     pat=$1
 458     shift
 459     for v; do
 460         eval "case $v in $pat) ;; *) echo $v ;; esac"
 461     done
 462 }
 463
 464 map(){
 465     m=$1
 466     shift
 467     for v; do eval $m; done
 468 }
 469
 470 add_suffix(){
 471     suffix=$1
 472     shift
 473     for v; do echo ${v}${suffix}; done
 474 }
 475
 476 set_all(){
 477     value=$1
 478     shift
 479     for var in $*; do
 480         eval $var=$value
 481     done
 482 }
 483
 484 set_weak(){
 485     value=$1
 486     shift
 487     for var; do
 488         eval : \${$var:=$value}
 489     done
 490 }
 491
 492 sanitize_var_name(){
 493     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 494 }
 495
 496 set_safe(){
 497     var=$1
 498     shift
 499     eval $(sanitize_var_name "$var")='$*'
 500 }
 501
 502 get_safe(){
 503     eval echo \$$(sanitize_var_name "$1")
 504 }
 505
 506 pushvar(){
 507     for pvar in $*; do
 508         eval level=\${${pvar}_level:=0}
 509         eval ${pvar}_${level}="\$$pvar"
 510         eval ${pvar}_level=$(($level+1))
 511     done
 512 }
 513
 514 popvar(){
 515     for pvar in $*; do
 516         eval level=\${${pvar}_level:-0}
 517         test $level = 0 && continue
 518         eval level=$(($level-1))
 519         eval $pvar="\${${pvar}_${level}}"
 520         eval ${pvar}_level=$level
 521         eval unset ${pvar}_${level}
 522     done
 523 }
 524
 525 enable(){
 526     set_all yes $*
 527 }
 528
 529 disable(){
 530     set_all no $*
 531 }
 532
 533 enable_weak(){
 534     set_weak yes $*
 535 }
 536
 537 disable_weak(){
 538     set_weak no $*
 539 }
 540
 541 enable_safe(){
 542     for var; do
 543         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 544     done
 545 }
 546
 547 disable_safe(){
 548     for var; do
 549         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 550     done
 551 }
 552
 553 do_enable_deep(){
 554     for var; do
 555         enabled $var && continue
 556         eval sel="\$${var}_select"
 557         eval sgs="\$${var}_suggest"
 558         pushvar var sgs
 559         enable_deep $sel
 560         popvar sgs
 561         enable_deep_weak $sgs
 562         popvar var
 563     done
 564 }
 565
 566 enable_deep(){
 567     do_enable_deep $*
 568     enable $*
 569 }
 570
 571 enable_deep_weak(){
 572     for var; do
 573         disabled $var && continue
 574         pushvar var
 575         do_enable_deep $var
 576         popvar var
 577         enable_weak $var
 578     done
 579 }
 580
 581 enabled(){
 582     test "${1#!}" = "$1" && op== || op=!=
 583     eval test "x\$${1#!}" $op "xyes"
 584 }
 585
 586 disabled(){
 587     test "${1#!}" = "$1" && op== || op=!=
 588     eval test "x\$${1#!}" $op "xno"
 589 }
 590
 591 enabled_all(){
 592     for opt; do
 593         enabled $opt || return 1
 594     done
 595 }
 596
 597 disabled_all(){
 598     for opt; do
 599         disabled $opt || return 1
 600     done
 601 }
 602
 603 enabled_any(){
 604     for opt; do
 605         enabled $opt && return 0
 606     done
 607 }
 608
 609 disabled_any(){
 610     for opt; do
 611         disabled $opt && return 0
 612     done
 613     return 1
 614 }
 615
 616 set_default(){
 617     for opt; do
 618         eval : \${$opt:=\$${opt}_default}
 619     done
 620 }
 621
 622 is_in(){
 623     value=$1
 624     shift
 625     for var in $*; do
 626         [ $var = $value ] && return 0
 627     done
 628     return 1
 629 }
 630
 631 do_check_deps(){
 632     for cfg; do
 633         cfg="${cfg#!}"
 634         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 635         disabled ${cfg}_checking && continue
 636         enable ${cfg}_checking
 637         append allopts $cfg
 638
 639         eval dep_all="\$${cfg}_deps"
 640         eval dep_any="\$${cfg}_deps_any"
 641         eval dep_sel="\$${cfg}_select"
 642         eval dep_sgs="\$${cfg}_suggest"
 643         eval dep_ifa="\$${cfg}_if"
 644         eval dep_ifn="\$${cfg}_if_any"
 645
 646         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 647         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 648         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 649
 650         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 651         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 652         enabled_all  $dep_all || disable $cfg
 653         enabled_any  $dep_any || disable $cfg
 654         disabled_any $dep_sel && disable $cfg
 655
 656         if enabled $cfg; then
 657             enable_deep $dep_sel
 658             enable_deep_weak $dep_sgs
 659         fi
 660
 661         disable ${cfg}_checking
 662     done
 663 }
 664
 665 check_deps(){
 666     unset allopts
 667
 668     do_check_deps "$@"
 669
 670     for cfg in $allopts; do
 671         enabled $cfg || continue
 672         eval dep_extralibs="\$${cfg}_extralibs"
 673         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 674     done
 675 }
 676
 677 print_config(){
 678     pfx=$1
 679     files=$2
 680     shift 2
 681     map 'eval echo "$v \${$v:-no}"' "$@" |
 682     awk "BEGIN { split(\"$files\", files) }
 683         {
 684             c = \"$pfx\" toupper(\$1);
 685             v = \$2;
 686             sub(/yes/, 1, v);
 687             sub(/no/,  0, v);
 688             for (f in files) {
 689                 file = files[f];
 690                 if (file ~ /\\.h\$/) {
 691                     printf(\"#define %s %d\\n\", c, v) >>file;
 692                 } else if (file ~ /\\.asm\$/) {
 693                     printf(\"%%define %s %d\\n\", c, v) >>file;
 694                 } else if (file ~ /\\.mak\$/) {
 695                     n = -v ? \"\" : \"!\";
 696                     printf(\"%s%s=yes\\n\", n, c) >>file;
 697                 } else if (file ~ /\\.texi\$/) {
 698                     pre = -v ? \"\" : \"@c \";
 699                     yesno = \$2;
 700                     c2 = tolower(c);
 701                     gsub(/_/, \"-\", c2);
 702                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 703                 }
 704             }
 705         }"
 706 }
 707
 708 print_enabled(){
 709     suf=$1
 710     shift
 711     for v; do
 712         enabled $v && printf "%s\n" ${v%$suf};
 713     done
 714 }
 715
 716 append(){
 717     var=$1
 718     shift
 719     eval "$var=\"\$$var $*\""
 720 }
 721
 722 prepend(){
 723     var=$1
 724     shift
 725     eval "$var=\"$* \$$var\""
 726 }
 727
 728 add_cppflags(){
 729     append CPPFLAGS "$@"
 730 }
 731
 732 add_cflags(){
 733     append CFLAGS $($cflags_filter "$@")
 734 }
 735
 736 add_cxxflags(){
 737     append CXXFLAGS $($cflags_filter "$@")
 738 }
 739
 740 add_asflags(){
 741     append ASFLAGS $($asflags_filter "$@")
 742 }
 743
 744 add_ldflags(){
 745     append LDFLAGS $($ldflags_filter "$@")
 746 }
 747
 748 add_stripflags(){
 749     append ASMSTRIPFLAGS "$@"
 750 }
 751
 752 add_extralibs(){
 753     prepend extralibs $($ldflags_filter "$@")
 754 }
 755
 756 add_host_cppflags(){
 757     append host_cppflags "$@"
 758 }
 759
 760 add_host_cflags(){
 761     append host_cflags $($host_cflags_filter "$@")
 762 }
 763
 764 add_host_ldflags(){
 765     append host_ldflags $($host_ldflags_filter "$@")
 766 }
 767
 768 add_compat(){
 769     append compat_objs $1
 770     shift
 771     map 'add_cppflags -D$v' "$@"
 772 }
 773
 774 check_cmd(){
 775     log "$@"
 776     "$@" >> $logfile 2>&1
 777 }
 778
 779 check_stat(){
 780     log check_stat "$@"
 781     stat "$1" >> $logfile 2>&1
 782 }
 783
 784 cc_o(){
 785     eval printf '%s\\n' $CC_O
 786 }
 787
 788 cc_e(){
 789     eval printf '%s\\n' $CC_E
 790 }
 791
 792 check_cc(){
 793     log check_cc "$@"
 794     cat > $TMPC
 795     log_file $TMPC
 796     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 797 }
 798
 799 check_cxx(){
 800     log check_cxx "$@"
 801     cat > $TMPCPP
 802     log_file $TMPCPP
 803     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 804 }
 805
 806 check_oc(){
 807     log check_oc "$@"
 808     cat > $TMPM
 809     log_file $TMPM
 810     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 811 }
 812
 813 check_cpp(){
 814     log check_cpp "$@"
 815     cat > $TMPC
 816     log_file $TMPC
 817     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 818 }
 819
 820 as_o(){
 821     eval printf '%s\\n' $AS_O
 822 }
 823
 824 check_as(){
 825     log check_as "$@"
 826     cat > $TMPS
 827     log_file $TMPS
 828     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 829 }
 830
 831 check_inline_asm(){
 832     log check_inline_asm "$@"
 833     name="$1"
 834     code="$2"
 835     shift 2
 836     disable $name
 837     check_cc "$@" <<EOF && enable $name
 838 void foo(void){ __asm__ volatile($code); }
 839 EOF
 840 }
 841
 842 check_insn(){
 843     log check_insn "$@"
 844     check_inline_asm ${1}_inline "\"$2\""
 845     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 846 }
 847
 848 check_yasm(){
 849     log check_yasm "$@"
 850     echo "$1" > $TMPS
 851     log_file $TMPS
 852     shift 1
 853     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 854 }
 855
 856 ld_o(){
 857     eval printf '%s\\n' $LD_O
 858 }
 859
 860 check_ld(){
 861     log check_ld "$@"
 862     type=$1
 863     shift 1
 864     flags=$(filter_out '-l*|*.so' $@)
 865     libs=$(filter '-l*|*.so' $@)
 866     check_$type $($cflags_filter $flags) || return
 867     flags=$($ldflags_filter $flags)
 868     libs=$($ldflags_filter $libs)
 869     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 870 }
 871
 872 print_include(){
 873     hdr=$1
 874     test "${hdr%.h}" = "${hdr}" &&
 875         echo "#include $hdr"    ||
 876         echo "#include <$hdr>"
 877 }
 878
 879 check_code(){
 880     log check_code "$@"
 881     check=$1
 882     headers=$2
 883     code=$3
 884     shift 3
 885     {
 886         for hdr in $headers; do
 887             print_include $hdr
 888         done
 889         echo "int main(void) { $code; return 0; }"
 890     } | check_$check "$@"
 891 }
 892
 893 check_cppflags(){
 894     log check_cppflags "$@"
 895     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 896 int x;
 897 EOF
 898 }
 899
 900 test_cflags(){
 901     log test_cflags "$@"
 902     set -- $($cflags_filter "$@")
 903     check_cc "$@" <<EOF
 904 int x;
 905 EOF
 906 }
 907
 908 check_cflags(){
 909     log check_cflags "$@"
 910     test_cflags "$@" && add_cflags "$@"
 911 }
 912
 913 check_cxxflags(){
 914     log check_cxxflags "$@"
 915     set -- $($cflags_filter "$@")
 916     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 917 int x;
 918 EOF
 919 }
 920
 921 test_ldflags(){
 922     log test_ldflags "$@"
 923     check_ld "cc" "$@" <<EOF
 924 int main(void){ return 0; }
 925 EOF
 926 }
 927
 928 check_ldflags(){
 929     log check_ldflags "$@"
 930     test_ldflags "$@" && add_ldflags "$@"
 931 }
 932
 933 test_stripflags(){
 934     log test_stripflags "$@"
 935     # call check_cc to get a fresh TMPO
 936     check_cc <<EOF
 937 int main(void) { return 0; }
 938 EOF
 939     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 940 }
 941
 942 check_stripflags(){
 943     log check_stripflags "$@"
 944     test_stripflags "$@" && add_stripflags "$@"
 945 }
 946
 947 check_header(){
 948     log check_header "$@"
 949     header=$1
 950     shift
 951     disable_safe $header
 952     check_cpp "$@" <<EOF && enable_safe $header
 953 #include <$header>
 954 int x;
 955 EOF
 956 }
 957
 958 check_header_oc(){
 959     log check_header_oc "$@"
 960     rm -f -- "$TMPO"
 961     header=$1
 962     shift
 963     disable_safe $header
 964     {
 965        echo "#include <$header>"
 966        echo "int main(void) { return 0; }"
 967     } | check_oc && check_stat "$TMPO" && enable_safe $headers
 968 }
 969
 970 check_func(){
 971     log check_func "$@"
 972     func=$1
 973     shift
 974     disable $func
 975     check_ld "cc" "$@" <<EOF && enable $func
 976 extern int $func();
 977 int main(void){ $func(); }
 978 EOF
 979 }
 980
 981 check_mathfunc(){
 982     log check_mathfunc "$@"
 983     func=$1
 984     narg=$2
 985     shift 2
 986     test $narg = 2 && args="f, g" || args="f"
 987     disable $func
 988     check_ld "cc" "$@" <<EOF && enable $func
 989 #include <math.h>
 990 float foo(float f, float g) { return $func($args); }
 991 int main(void){ return (int) foo; }
 992 EOF
 993 }
 994
 995 check_func_headers(){
 996     log check_func_headers "$@"
 997     headers=$1
 998     funcs=$2
 999     shift 2
1000     {
1001         for hdr in $headers; do
1002             print_include $hdr
1003         done
1004         for func in $funcs; do
1005             echo "long check_$func(void) { return (long) $func; }"
1006         done
1007         echo "int main(void) { return 0; }"
1008     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1009 }
1010
1011 check_class_headers_cpp(){
1012     log check_class_headers_cpp "$@"
1013     headers=$1
1014     classes=$2
1015     shift 2
1016     {
1017         for hdr in $headers; do
1018             echo "#include <$hdr>"
1019         done
1020         echo "int main(void) { "
1021         i=1
1022         for class in $classes; do
1023             echo "$class obj$i;"
1024             i=$(expr $i + 1)
1025         done
1026         echo "return 0; }"
1027     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1028 }
1029
1030 check_cpp_condition(){
1031     log check_cpp_condition "$@"
1032     header=$1
1033     condition=$2
1034     shift 2
1035     check_cpp "$@" <<EOF
1036 #include <$header>
1037 #if !($condition)
1038 #error "unsatisfied condition: $condition"
1039 #endif
1040 EOF
1041 }
1042
1043 check_lib(){
1044     log check_lib "$@"
1045     header="$1"
1046     func="$2"
1047     shift 2
1048     check_header $header && check_func $func "$@" && add_extralibs "$@"
1049 }
1050
1051 check_lib2(){
1052     log check_lib2 "$@"
1053     headers="$1"
1054     funcs="$2"
1055     shift 2
1056     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1057 }
1058
1059 check_lib_cpp(){
1060     log check_lib_cpp "$@"
1061     headers="$1"
1062     classes="$2"
1063     shift 2
1064     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1065 }
1066
1067 check_pkg_config(){
1068     log check_pkg_config "$@"
1069     pkgandversion="$1"
1070     pkg="${1%% *}"
1071     headers="$2"
1072     funcs="$3"
1073     shift 3
1074     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1075     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1076     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1077     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1078         set_safe ${pkg}_cflags $pkg_cflags   &&
1079         set_safe ${pkg}_libs   $pkg_libs
1080 }
1081
1082 check_exec(){
1083     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1084 }
1085
1086 check_exec_crash(){
1087     code=$(cat)
1088
1089     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1090     # are safe but may not be available everywhere.  Thus we use
1091     # raise(SIGTERM) instead.  The check is run in a subshell so we
1092     # can redirect the "Terminated" message from the shell.  SIGBUS
1093     # is not defined by standard C so it is used conditionally.
1094
1095     (check_exec "$@") >> $logfile 2>&1 <<EOF
1096 #include <signal.h>
1097 static void sighandler(int sig){
1098     raise(SIGTERM);
1099 }
1100 int foo(void){
1101     $code
1102 }
1103 int (*func_ptr)(void) = foo;
1104 int main(void){
1105     signal(SIGILL, sighandler);
1106     signal(SIGFPE, sighandler);
1107     signal(SIGSEGV, sighandler);
1108 #ifdef SIGBUS
1109     signal(SIGBUS, sighandler);
1110 #endif
1111     return func_ptr();
1112 }
1113 EOF
1114 }
1115
1116 check_type(){
1117     log check_type "$@"
1118     headers=$1
1119     type=$2
1120     shift 2
1121     disable_safe "$type"
1122     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1123 }
1124
1125 check_struct(){
1126     log check_struct "$@"
1127     headers=$1
1128     struct=$2
1129     member=$3
1130     shift 3
1131     disable_safe "${struct}_${member}"
1132     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1133         enable_safe "${struct}_${member}"
1134 }
1135
1136 check_builtin(){
1137     log check_builtin "$@"
1138     name=$1
1139     headers=$2
1140     builtin=$3
1141     shift 3
1142     disable "$name"
1143     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1144 }
1145
1146 check_compile_assert(){
1147     log check_compile_assert "$@"
1148     name=$1
1149     headers=$2
1150     condition=$3
1151     shift 3
1152     disable "$name"
1153     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1154 }
1155
1156 require(){
1157     name="$1"
1158     header="$2"
1159     func="$3"
1160     shift 3
1161     check_lib $header $func "$@" || die "ERROR: $name not found"
1162 }
1163
1164 require2(){
1165     name="$1"
1166     headers="$2"
1167     func="$3"
1168     shift 3
1169     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1170 }
1171
1172 require_cpp(){
1173     name="$1"
1174     headers="$2"
1175     classes="$3"
1176     shift 3
1177     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1178 }
1179
1180 require_pkg_config(){
1181     pkg="$1"
1182     check_pkg_config "$@" || die "ERROR: $pkg not found"
1183     add_cflags    $(get_safe ${pkg}_cflags)
1184     add_extralibs $(get_safe ${pkg}_libs)
1185 }
1186
1187 require_libfreetype(){
1188     log require_libfreetype "$@"
1189     pkg="freetype2"
1190     check_cmd $pkg_config --exists --print-errors $pkg \
1191       || die "ERROR: $pkg not found"
1192     pkg_cflags=$($pkg_config --cflags $pkg)
1193     pkg_libs=$($pkg_config --libs $pkg)
1194     {
1195         echo "#include <ft2build.h>"
1196         echo "#include FT_FREETYPE_H"
1197         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1198         echo "int main(void) { return 0; }"
1199     } | check_ld "cc" $pkg_cflags $pkg_libs \
1200       && set_safe ${pkg}_cflags $pkg_cflags \
1201       && set_safe ${pkg}_libs   $pkg_libs \
1202       || die "ERROR: $pkg not found"
1203     add_cflags    $(get_safe ${pkg}_cflags)
1204     add_extralibs $(get_safe ${pkg}_libs)
1205 }
1206
1207 hostcc_e(){
1208     eval printf '%s\\n' $HOSTCC_E
1209 }
1210
1211 hostcc_o(){
1212     eval printf '%s\\n' $HOSTCC_O
1213 }
1214
1215 check_host_cc(){
1216     log check_host_cc "$@"
1217     cat > $TMPC
1218     log_file $TMPC
1219     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1220 }
1221
1222 check_host_cpp(){
1223     log check_host_cpp "$@"
1224     cat > $TMPC
1225     log_file $TMPC
1226     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1227 }
1228
1229 check_host_cppflags(){
1230     log check_host_cppflags "$@"
1231     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1232 int x;
1233 EOF
1234 }
1235
1236 check_host_cflags(){
1237     log check_host_cflags "$@"
1238     set -- $($host_cflags_filter "$@")
1239     check_host_cc "$@" <<EOF && append host_cflags "$@"
1240 int x;
1241 EOF
1242 }
1243
1244 check_host_cpp_condition(){
1245     log check_host_cpp_condition "$@"
1246     header=$1
1247     condition=$2
1248     shift 2
1249     check_host_cpp "$@" <<EOF
1250 #include <$header>
1251 #if !($condition)
1252 #error "unsatisfied condition: $condition"
1253 #endif
1254 EOF
1255 }
1256
1257 apply(){
1258     file=$1
1259     shift
1260     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1261 }
1262
1263 cp_if_changed(){
1264     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1265     mkdir -p "$(dirname $2)"
1266     $cp_f "$1" "$2"
1267 }
1268
1269 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1270 # system-dependent things.
1271
1272 COMPONENT_LIST="
1273     bsfs
1274     decoders
1275     demuxers
1276     encoders
1277     filters
1278     hwaccels
1279     indevs
1280     muxers
1281     outdevs
1282     parsers
1283     protocols
1284 "
1285
1286 EXAMPLE_LIST="
1287     avio_reading_example
1288     decoding_encoding_example
1289     demuxing_decoding_example
1290     filter_audio_example
1291     filtering_audio_example
1292     filtering_video_example
1293     metadata_example
1294     muxing_example
1295     remuxing_example
1296     resampling_audio_example
1297     scaling_video_example
1298     transcode_aac_example
1299     transcoding_example
1300 "
1301
1302 EXTERNAL_LIBRARY_LIST="
1303     avisynth
1304     bzlib
1305     crystalhd
1306     decklink
1307     frei0r
1308     gnutls
1309     iconv
1310     ladspa
1311     libaacplus
1312     libass
1313     libbluray
1314     libcaca
1315     libcdio
1316     libcelt
1317     libdc1394
1318     libfaac
1319     libfdk_aac
1320     libflite
1321     libfontconfig
1322     libfreetype
1323     libgme
1324     libgsm
1325     libiec61883
1326     libilbc
1327     libmodplug
1328     libmp3lame
1329     libnut
1330     libopencore_amrnb
1331     libopencore_amrwb
1332     libopencv
1333     libopenjpeg
1334     libopus
1335     libpulse
1336     libquvi
1337     librtmp
1338     libschroedinger
1339     libshine
1340     libsoxr
1341     libspeex
1342     libssh
1343     libstagefright_h264
1344     libtheora
1345     libtwolame
1346     libutvideo
1347     libv4l2
1348     libvidstab
1349     libvo_aacenc
1350     libvo_amrwbenc
1351     libvorbis
1352     libvpx
1353     libwavpack
1354     libwebp
1355     libx264
1356     libx265
1357     libxavs
1358     libxvid
1359     libzmq
1360     libzvbi
1361     openal
1362     opencl
1363     opengl
1364     openssl
1365     x11grab
1366     xlib
1367     zlib
1368 "
1369
1370 DOCUMENT_LIST="
1371     doc
1372     htmlpages
1373     manpages
1374     podpages
1375     txtpages
1376 "
1377
1378 FEATURE_LIST="
1379     ftrapv
1380     gray
1381     hardcoded_tables
1382     runtime_cpudetect
1383     safe_bitstream_reader
1384     shared
1385     small
1386     sram
1387     static
1388     swscale_alpha
1389 "
1390
1391 HWACCEL_LIST="
1392     dxva2
1393     vaapi
1394     vda
1395     vdpau
1396     xvmc
1397 "
1398
1399 LIBRARY_LIST="
1400     avcodec
1401     avdevice
1402     avfilter
1403     avformat
1404     avresample
1405     avutil
1406     postproc
1407     swresample
1408     swscale
1409 "
1410
1411 LICENSE_LIST="
1412     gpl
1413     nonfree
1414     version3
1415 "
1416
1417 PROGRAM_LIST="
1418     ffplay
1419     ffprobe
1420     ffserver
1421     ffmpeg
1422 "
1423
1424 SUBSYSTEM_LIST="
1425     dct
1426     dwt
1427     error_resilience
1428     fast_unaligned
1429     fft
1430     lsp
1431     lzo
1432     mdct
1433     network
1434     rdft
1435 "
1436
1437 CONFIG_LIST="
1438     $COMPONENT_LIST
1439     $DOCUMENT_LIST
1440     $EXAMPLE_LIST
1441     $EXTERNAL_LIBRARY_LIST
1442     $FEATURE_LIST
1443     $HWACCEL_LIST
1444     $LICENSE_LIST
1445     $LIBRARY_LIST
1446     $PROGRAM_LIST
1447     $SUBSYSTEM_LIST
1448     fontconfig
1449     incompatible_libav_abi
1450     memalign_hack
1451     memory_poisoning
1452     neon_clobber_test
1453     pic
1454     pod2man
1455     raise_major
1456     thumb
1457     xmm_clobber_test
1458 "
1459
1460 THREADS_LIST="
1461     pthreads
1462     os2threads
1463     w32threads
1464 "
1465
1466 ATOMICS_LIST="
1467     atomics_gcc
1468     atomics_suncc
1469     atomics_win32
1470 "
1471
1472 ARCH_LIST="
1473     aarch64
1474     alpha
1475     arm
1476     avr32
1477     avr32_ap
1478     avr32_uc
1479     bfin
1480     ia64
1481     m68k
1482     mips
1483     mips64
1484     parisc
1485     ppc
1486     ppc64
1487     s390
1488     sh4
1489     sparc
1490     sparc64
1491     tilegx
1492     tilepro
1493     tomi
1494     x86
1495     x86_32
1496     x86_64
1497 "
1498
1499 ARCH_EXT_LIST_ARM="
1500     armv5te
1501     armv6
1502     armv6t2
1503     armv8
1504     neon
1505     vfp
1506     vfpv3
1507 "
1508
1509 ARCH_EXT_LIST_MIPS="
1510     mipsfpu
1511     mips32r2
1512     mipsdspr1
1513     mipsdspr2
1514 "
1515
1516 ARCH_EXT_LIST_X86_SIMD="
1517     amd3dnow
1518     amd3dnowext
1519     avx
1520     avx2
1521     fma3
1522     fma4
1523     mmx
1524     mmxext
1525     sse
1526     sse2
1527     sse3
1528     sse4
1529     sse42
1530     ssse3
1531     xop
1532 "
1533
1534 ARCH_EXT_LIST_PPC="
1535     altivec
1536     dcbzl
1537     ldbrx
1538     ppc4xx
1539 "
1540
1541 ARCH_EXT_LIST_X86="
1542     $ARCH_EXT_LIST_X86_SIMD
1543     cpunop
1544     i686
1545 "
1546
1547 ARCH_EXT_LIST="
1548     $ARCH_EXT_LIST_ARM
1549     $ARCH_EXT_LIST_PPC
1550     $ARCH_EXT_LIST_X86
1551     $ARCH_EXT_LIST_MIPS
1552     loongson
1553 "
1554
1555 ARCH_FEATURES="
1556     aligned_stack
1557     fast_64bit
1558     fast_clz
1559     fast_cmov
1560     local_aligned_8
1561     local_aligned_16
1562     local_aligned_32
1563 "
1564
1565 BUILTIN_LIST="
1566     atomic_cas_ptr
1567     machine_rw_barrier
1568     MemoryBarrier
1569     mm_empty
1570     rdtsc
1571     sarestart
1572     sync_val_compare_and_swap
1573 "
1574 HAVE_LIST_CMDLINE="
1575     inline_asm
1576     symver
1577     yasm
1578 "
1579
1580 HAVE_LIST_PUB="
1581     bigendian
1582     fast_unaligned
1583     incompatible_libav_abi
1584 "
1585
1586 HEADERS_LIST="
1587     alsa_asoundlib_h
1588     altivec_h
1589     arpa_inet_h
1590     asm_types_h
1591     cdio_paranoia_h
1592     cdio_paranoia_paranoia_h
1593     CL_cl_h
1594     dev_bktr_ioctl_bt848_h
1595     dev_bktr_ioctl_meteor_h
1596     dev_ic_bt8xx_h
1597     dev_video_bktr_ioctl_bt848_h
1598     dev_video_meteor_ioctl_meteor_h
1599     direct_h
1600     dlfcn_h
1601     dxva_h
1602     ES2_gl_h
1603     gsm_h
1604     io_h
1605     mach_mach_time_h
1606     machine_ioctl_bt848_h
1607     machine_ioctl_meteor_h
1608     malloc_h
1609     openjpeg_1_5_openjpeg_h
1610     OpenGL_gl3_h
1611     poll_h
1612     sndio_h
1613     soundcard_h
1614     sys_mman_h
1615     sys_param_h
1616     sys_resource_h
1617     sys_select_h
1618     sys_soundcard_h
1619     sys_time_h
1620     sys_un_h
1621     sys_videoio_h
1622     termios_h
1623     unistd_h
1624     windows_h
1625     winsock2_h
1626 "
1627
1628 MATH_FUNCS="
1629     atanf
1630     atan2f
1631     cbrt
1632     cbrtf
1633     cosf
1634     exp2
1635     exp2f
1636     expf
1637     isinf
1638     isnan
1639     ldexpf
1640     llrint
1641     llrintf
1642     log2
1643     log2f
1644     log10f
1645     lrint
1646     lrintf
1647     powf
1648     rint
1649     round
1650     roundf
1651     sinf
1652     trunc
1653     truncf
1654 "
1655
1656 SYSTEM_FUNCS="
1657     access
1658     aligned_malloc
1659     clock_gettime
1660     closesocket
1661     CommandLineToArgvW
1662     CoTaskMemFree
1663     CryptGenRandom
1664     dlopen
1665     fcntl
1666     flt_lim
1667     fork
1668     getaddrinfo
1669     gethrtime
1670     getopt
1671     GetProcessAffinityMask
1672     GetProcessMemoryInfo
1673     GetProcessTimes
1674     getrusage
1675     getservbyport
1676     GetSystemTimeAsFileTime
1677     gettimeofday
1678     glob
1679     glXGetProcAddress
1680     inet_aton
1681     isatty
1682     jack_port_get_latency_range
1683     kbhit
1684     localtime_r
1685     lzo1x_999_compress
1686     mach_absolute_time
1687     MapViewOfFile
1688     memalign
1689     mkstemp
1690     mmap
1691     mprotect
1692     nanosleep
1693     PeekNamedPipe
1694     posix_memalign
1695     pthread_cancel
1696     sched_getaffinity
1697     SetConsoleTextAttribute
1698     setmode
1699     setrlimit
1700     Sleep
1701     strerror_r
1702     sysconf
1703     sysctl
1704     usleep
1705     VirtualAlloc
1706     wglGetProcAddress
1707 "
1708
1709 TOOLCHAIN_FEATURES="
1710     asm_mod_q
1711     attribute_may_alias
1712     attribute_packed
1713     ebp_available
1714     ebx_available
1715     gnu_as
1716     gnu_windres
1717     ibm_asm
1718     inline_asm_labels
1719     inline_asm_nonlocal_labels
1720     inline_asm_direct_symbol_refs
1721     pragma_deprecated
1722     rsync_contimeout
1723     symver_asm_label
1724     symver_gnu_asm
1725     vfp_args
1726     xform_asm
1727     xmm_clobbers
1728 "
1729
1730 TYPES_LIST="
1731     socklen_t
1732     struct_addrinfo
1733     struct_group_source_req
1734     struct_ip_mreq_source
1735     struct_ipv6_mreq
1736     struct_pollfd
1737     struct_rusage_ru_maxrss
1738     struct_sctp_event_subscribe
1739     struct_sockaddr_in6
1740     struct_sockaddr_sa_len
1741     struct_sockaddr_storage
1742     struct_stat_st_mtim_tv_nsec
1743     struct_v4l2_frmivalenum_discrete
1744 "
1745
1746 HAVE_LIST="
1747     $ARCH_EXT_LIST
1748     $(add_suffix _external $ARCH_EXT_LIST)
1749     $(add_suffix _inline   $ARCH_EXT_LIST)
1750     $ARCH_FEATURES
1751     $ATOMICS_LIST
1752     $BUILTIN_LIST
1753     $HAVE_LIST_CMDLINE
1754     $HAVE_LIST_PUB
1755     $HEADERS_LIST
1756     $MATH_FUNCS
1757     $SYSTEM_FUNCS
1758     $THREADS_LIST
1759     $TOOLCHAIN_FEATURES
1760     $TYPES_LIST
1761     atomics_native
1762     dos_paths
1763     dxva2_lib
1764     libc_msvcrt
1765     libdc1394_1
1766     libdc1394_2
1767     makeinfo
1768     perl
1769     pod2man
1770     sdl
1771     texi2html
1772     threads
1773     vdpau_x11
1774     xlib
1775 "
1776
1777 # options emitted with CONFIG_ prefix but not available on the command line
1778 CONFIG_EXTRA="
1779     aandcttables
1780     ac3dsp
1781     audio_frame_queue
1782     cabac
1783     dsputil
1784     exif
1785     frame_thread_encoder
1786     gcrypt
1787     golomb
1788     gplv3
1789     h263dsp
1790     h264chroma
1791     h264dsp
1792     h264pred
1793     h264qpel
1794     hpeldsp
1795     huffman
1796     intrax8
1797     lgplv3
1798     llviddsp
1799     lpc
1800     mpegaudio
1801     mpegaudiodsp
1802     mpegvideo
1803     mpegvideoenc
1804     nettle
1805     rangecoder
1806     riffdec
1807     riffenc
1808     rtpdec
1809     rtpenc_chain
1810     sinewin
1811     tpeldsp
1812     videodsp
1813     vp3dsp
1814 "
1815
1816 CMDLINE_SELECT="
1817     $ARCH_EXT_LIST
1818     $CONFIG_LIST
1819     $HAVE_LIST_CMDLINE
1820     $THREADS_LIST
1821     asm
1822     cross_compile
1823     debug
1824     extra_warnings
1825     logging
1826     lto
1827     optimizations
1828     rpath
1829     stripping
1830 "
1831
1832 PATHS_LIST="
1833     bindir
1834     datadir
1835     docdir
1836     incdir
1837     libdir
1838     mandir
1839     prefix
1840     shlibdir
1841 "
1842
1843 CMDLINE_SET="
1844     $PATHS_LIST
1845     ar
1846     arch
1847     as
1848     assert_level
1849     build_suffix
1850     cc
1851     cpu
1852     cross_prefix
1853     cxx
1854     dep_cc
1855     extra_version
1856     gas
1857     host_cc
1858     host_cflags
1859     host_ld
1860     host_ldflags
1861     host_libs
1862     host_os
1863     install
1864     ld
1865     logfile
1866     malloc_prefix
1867     nm
1868     optflags
1869     pkg_config
1870     pkg_config_flags
1871     progs_suffix
1872     random_seed
1873     ranlib
1874     samples
1875     strip
1876     sysinclude
1877     sysroot
1878     target_exec
1879     target_os
1880     target_path
1881     target_samples
1882     tempprefix
1883     toolchain
1884     valgrind
1885     yasmexe
1886 "
1887
1888 CMDLINE_APPEND="
1889     extra_cflags
1890     extra_cxxflags
1891     host_cppflags
1892 "
1893
1894 # code dependency declarations
1895
1896 # architecture extensions
1897
1898 armv5te_deps="arm"
1899 armv6_deps="arm"
1900 armv6t2_deps="arm"
1901 armv8_deps="aarch64"
1902 neon_deps_any="aarch64 arm"
1903 vfp_deps_any="aarch64 arm"
1904 vfpv3_deps="vfp"
1905
1906 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1907
1908 mipsfpu_deps="mips"
1909 mips32r2_deps="mips"
1910 mipsdspr1_deps="mips"
1911 mipsdspr2_deps="mips"
1912
1913 altivec_deps="ppc"
1914 ppc4xx_deps="ppc"
1915
1916 cpunop_deps="i686"
1917 x86_64_select="i686"
1918 x86_64_suggest="fast_cmov"
1919
1920 amd3dnow_deps="mmx"
1921 amd3dnowext_deps="amd3dnow"
1922 i686_deps="x86"
1923 mmx_deps="x86"
1924 mmxext_deps="mmx"
1925 sse_deps="mmxext"
1926 sse2_deps="sse"
1927 sse3_deps="sse2"
1928 ssse3_deps="sse3"
1929 sse4_deps="ssse3"
1930 sse42_deps="sse4"
1931 avx_deps="sse42"
1932 xop_deps="avx"
1933 fma3_deps="avx"
1934 fma4_deps="avx"
1935 avx2_deps="avx"
1936
1937 mmx_external_deps="yasm"
1938 mmx_inline_deps="inline_asm"
1939 mmx_suggest="mmx_external mmx_inline"
1940
1941 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1942     eval dep=\$${ext}_deps
1943     eval ${ext}_external_deps='"${dep}_external"'
1944     eval ${ext}_inline_deps='"${dep}_inline"'
1945     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1946 done
1947
1948 aligned_stack_if_any="aarch64 ppc x86"
1949 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1950 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1951 fast_unaligned_if_any="aarch64 ppc x86"
1952
1953 need_memalign="altivec neon sse"
1954
1955 # system capabilities
1956 log2_deps="!libc_msvcrt"
1957
1958 symver_if_any="symver_asm_label symver_gnu_asm"
1959
1960 # threading support
1961 atomics_gcc_if="sync_val_compare_and_swap"
1962 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1963 atomics_win32_if="MemoryBarrier"
1964 atomics_native_if_any="$ATOMICS_LIST"
1965 w32threads_deps="atomics_native"
1966 threads_if_any="$THREADS_LIST"
1967
1968 # subsystems
1969 dct_select="rdft"
1970 error_resilience_select="dsputil"
1971 frame_thread_encoder_deps="encoders threads"
1972 mdct_select="fft"
1973 rdft_select="fft"
1974 mpegaudio_select="mpegaudiodsp"
1975 mpegaudiodsp_select="dct"
1976 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1977 mpegvideoenc_select="dsputil mpegvideo"
1978
1979 # decoders / encoders
1980 aac_decoder_select="mdct sinewin"
1981 aac_encoder_select="audio_frame_queue mdct sinewin"
1982 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1983 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1984 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
1985 ac3_encoder_select="mdct ac3dsp dsputil"
1986 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1987 aic_decoder_select="dsputil golomb"
1988 alac_encoder_select="lpc"
1989 als_decoder_select="dsputil"
1990 amrnb_decoder_select="lsp"
1991 amrwb_decoder_select="lsp"
1992 amv_decoder_select="sp5x_decoder exif"
1993 amv_encoder_select="aandcttables"
1994 ape_decoder_select="dsputil"
1995 asv1_decoder_select="dsputil"
1996 asv1_encoder_select="dsputil"
1997 asv2_decoder_select="dsputil"
1998 asv2_encoder_select="dsputil"
1999 atrac1_decoder_select="mdct sinewin"
2000 atrac3_decoder_select="mdct"
2001 atrac3p_decoder_select="mdct sinewin"
2002 avrn_decoder_select="exif"
2003 bink_decoder_select="dsputil hpeldsp"
2004 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2005 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2006 cavs_decoder_select="dsputil golomb h264chroma videodsp"
2007 cllc_decoder_select="dsputil"
2008 comfortnoise_encoder_select="lpc"
2009 cook_decoder_select="dsputil mdct sinewin"
2010 cscd_decoder_select="lzo"
2011 cscd_decoder_suggest="zlib"
2012 dca_decoder_select="mdct"
2013 dirac_decoder_select="dsputil dwt golomb videodsp"
2014 dnxhd_decoder_select="dsputil"
2015 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
2016 dvvideo_decoder_select="dsputil"
2017 dvvideo_encoder_select="dsputil"
2018 dxa_decoder_select="zlib"
2019 eac3_decoder_select="ac3_decoder"
2020 eac3_encoder_select="ac3_encoder"
2021 eamad_decoder_select="aandcttables dsputil mpegvideo"
2022 eatgq_decoder_select="aandcttables"
2023 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
2024 exr_decoder_select="zlib"
2025 ffv1_decoder_select="golomb rangecoder"
2026 ffv1_encoder_select="rangecoder"
2027 ffvhuff_decoder_select="huffyuv_decoder"
2028 ffvhuff_encoder_select="huffyuv_encoder"
2029 fic_decoder_select="golomb"
2030 flac_decoder_select="golomb"
2031 flac_encoder_select="dsputil golomb lpc"
2032 flashsv_decoder_select="zlib"
2033 flashsv_encoder_select="zlib"
2034 flashsv2_encoder_select="zlib"
2035 flashsv2_decoder_select="zlib"
2036 flv_decoder_select="h263_decoder"
2037 flv_encoder_select="h263_encoder"
2038 fourxm_decoder_select="dsputil"
2039 fraps_decoder_select="dsputil huffman"
2040 g2m_decoder_select="dsputil zlib"
2041 g729_decoder_select="dsputil"
2042 h261_decoder_select="error_resilience mpegvideo"
2043 h261_encoder_select="aandcttables mpegvideoenc"
2044 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
2045 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2046 h263i_decoder_select="h263_decoder"
2047 h263p_encoder_select="h263_encoder"
2048 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2049 h264_decoder_suggest="error_resilience"
2050 hevc_decoder_select="cabac dsputil golomb videodsp"
2051 huffyuv_decoder_select="dsputil llviddsp"
2052 huffyuv_encoder_select="dsputil huffman llviddsp"
2053 iac_decoder_select="imc_decoder"
2054 imc_decoder_select="dsputil fft mdct sinewin"
2055 indeo3_decoder_select="hpeldsp"
2056 interplay_video_decoder_select="hpeldsp"
2057 jpegls_decoder_select="golomb mjpeg_decoder"
2058 jpegls_encoder_select="golomb"
2059 jv_decoder_select="dsputil"
2060 lagarith_decoder_select="dsputil"
2061 ljpeg_encoder_select="aandcttables mpegvideoenc"
2062 loco_decoder_select="golomb"
2063 mdec_decoder_select="dsputil error_resilience mpegvideo"
2064 metasound_decoder_select="lsp mdct sinewin"
2065 mimic_decoder_select="dsputil hpeldsp"
2066 mjpeg_decoder_select="dsputil hpeldsp exif"
2067 mjpeg_encoder_select="aandcttables mpegvideoenc"
2068 mjpegb_decoder_select="mjpeg_decoder"
2069 mlp_decoder_select="mlp_parser"
2070 motionpixels_decoder_select="dsputil"
2071 mp1_decoder_select="mpegaudio"
2072 mp1float_decoder_select="mpegaudio"
2073 mp2_decoder_select="mpegaudio"
2074 mp2float_decoder_select="mpegaudio"
2075 mp3_decoder_select="mpegaudio"
2076 mp3adu_decoder_select="mpegaudio"
2077 mp3adufloat_decoder_select="mpegaudio"
2078 mp3float_decoder_select="mpegaudio"
2079 mp3on4_decoder_select="mpegaudio"
2080 mp3on4float_decoder_select="mpegaudio"
2081 mpc7_decoder_select="dsputil mpegaudiodsp"
2082 mpc8_decoder_select="mpegaudiodsp"
2083 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2084 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2085 mpeg1video_decoder_select="error_resilience mpegvideo"
2086 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2087 mpeg2video_decoder_select="error_resilience mpegvideo"
2088 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2089 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2090 mpeg4_encoder_select="h263_encoder"
2091 msmpeg4v1_decoder_select="h263_decoder"
2092 msmpeg4v2_decoder_select="h263_decoder"
2093 msmpeg4v2_encoder_select="h263_encoder"
2094 msmpeg4v3_decoder_select="h263_decoder"
2095 msmpeg4v3_encoder_select="h263_encoder"
2096 mss2_decoder_select="error_resilience vc1_decoder"
2097 mxpeg_decoder_select="mjpeg_decoder"
2098 nellymoser_decoder_select="mdct sinewin"
2099 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2100 nuv_decoder_select="dsputil lzo"
2101 on2avc_decoder_select="mdct"
2102 png_decoder_select="zlib"
2103 png_encoder_select="dsputil zlib"
2104 prores_decoder_select="dsputil"
2105 prores_encoder_select="dsputil"
2106 qcelp_decoder_select="lsp"
2107 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2108 ra_144_encoder_select="audio_frame_queue lpc"
2109 ralf_decoder_select="golomb"
2110 rawvideo_decoder_select="dsputil"
2111 rtjpeg_decoder_select="dsputil"
2112 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2113 rv10_encoder_select="h263_encoder"
2114 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2115 rv20_encoder_select="h263_encoder"
2116 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2117 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2118 shorten_decoder_select="golomb"
2119 sipr_decoder_select="lsp"
2120 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2121 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2122 sonic_decoder_select="golomb rangecoder"
2123 sonic_encoder_select="golomb rangecoder"
2124 sonic_ls_encoder_select="golomb"
2125 sp5x_decoder_select="mjpeg_decoder"
2126 svq1_decoder_select="hpeldsp"
2127 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2128 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2129 svq3_decoder_suggest="zlib"
2130 tak_decoder_select="dsputil"
2131 theora_decoder_select="vp3_decoder"
2132 thp_decoder_select="mjpeg_decoder"
2133 tiff_decoder_suggest="zlib"
2134 tiff_encoder_suggest="zlib"
2135 truehd_decoder_select="mlp_parser"
2136 truemotion2_decoder_select="dsputil"
2137 truespeech_decoder_select="dsputil"
2138 tscc_decoder_select="zlib"
2139 twinvq_decoder_select="mdct lsp sinewin"
2140 utvideo_decoder_select="dsputil"
2141 utvideo_encoder_select="dsputil huffman"
2142 vble_decoder_select="dsputil"
2143 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2144 vc1image_decoder_select="vc1_decoder"
2145 vorbis_decoder_select="mdct"
2146 vorbis_encoder_select="mdct"
2147 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2148 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2149 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2150 vp6a_decoder_select="vp6_decoder"
2151 vp6f_decoder_select="vp6_decoder"
2152 vp7_decoder_select="h264pred videodsp"
2153 vp8_decoder_select="h264pred videodsp"
2154 vp9_decoder_select="videodsp"
2155 webp_decoder_select="vp8_decoder"
2156 wmapro_decoder_select="mdct sinewin"
2157 wmav1_decoder_select="mdct sinewin"
2158 wmav1_encoder_select="mdct sinewin"
2159 wmav2_decoder_select="mdct sinewin"
2160 wmav2_encoder_select="mdct sinewin"
2161 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2162 wmv1_decoder_select="h263_decoder"
2163 wmv1_encoder_select="h263_encoder"
2164 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2165 wmv2_encoder_select="h263_encoder"
2166 wmv3_decoder_select="vc1_decoder"
2167 wmv3image_decoder_select="wmv3_decoder"
2168 zerocodec_decoder_select="zlib"
2169 zlib_decoder_select="zlib"
2170 zlib_encoder_select="zlib"
2171 zmbv_decoder_select="zlib"
2172 zmbv_encoder_select="zlib"
2173
2174 # hardware accelerators
2175 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2176 dxva2_deps="dxva2api_h"
2177 vaapi_deps="va_va_h"
2178 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2179 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2180 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2181 xvmc_deps="X11_extensions_XvMClib_h"
2182
2183 h263_vaapi_hwaccel_deps="vaapi"
2184 h263_vaapi_hwaccel_select="h263_decoder"
2185 h263_vdpau_hwaccel_deps="vdpau"
2186 h263_vdpau_hwaccel_select="h263_decoder"
2187 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2188 h264_dxva2_hwaccel_deps="dxva2"
2189 h264_dxva2_hwaccel_select="h264_decoder"
2190 h264_vaapi_hwaccel_deps="vaapi"
2191 h264_vaapi_hwaccel_select="h264_decoder"
2192 h264_vda_decoder_deps="vda"
2193 h264_vda_decoder_select="h264_decoder"
2194 h264_vda_hwaccel_deps="vda"
2195 h264_vda_hwaccel_select="h264_decoder"
2196 h264_vdpau_decoder_deps="vdpau"
2197 h264_vdpau_decoder_select="h264_decoder"
2198 h264_vdpau_hwaccel_deps="vdpau"
2199 h264_vdpau_hwaccel_select="h264_decoder"
2200 mpeg_vdpau_decoder_deps="vdpau"
2201 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2202 mpeg_xvmc_hwaccel_deps="xvmc"
2203 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2204 mpeg1_vdpau_decoder_deps="vdpau"
2205 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2206 mpeg1_vdpau_hwaccel_deps="vdpau"
2207 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2208 mpeg1_xvmc_hwaccel_deps="xvmc"
2209 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2210 mpeg2_crystalhd_decoder_select="crystalhd"
2211 mpeg2_dxva2_hwaccel_deps="dxva2"
2212 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2213 mpeg2_vaapi_hwaccel_deps="vaapi"
2214 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2215 mpeg2_vdpau_hwaccel_deps="vdpau"
2216 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2217 mpeg2_xvmc_hwaccel_deps="xvmc"
2218 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2219 mpeg4_crystalhd_decoder_select="crystalhd"
2220 mpeg4_vaapi_hwaccel_deps="vaapi"
2221 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2222 mpeg4_vdpau_decoder_deps="vdpau"
2223 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2224 mpeg4_vdpau_hwaccel_deps="vdpau"
2225 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2226 msmpeg4_crystalhd_decoder_select="crystalhd"
2227 vc1_crystalhd_decoder_select="crystalhd"
2228 vc1_dxva2_hwaccel_deps="dxva2"
2229 vc1_dxva2_hwaccel_select="vc1_decoder"
2230 vc1_vaapi_hwaccel_deps="vaapi"
2231 vc1_vaapi_hwaccel_select="vc1_decoder"
2232 vc1_vdpau_decoder_deps="vdpau"
2233 vc1_vdpau_decoder_select="vc1_decoder"
2234 vc1_vdpau_hwaccel_deps="vdpau"
2235 vc1_vdpau_hwaccel_select="vc1_decoder"
2236 wmv3_crystalhd_decoder_select="crystalhd"
2237 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2238 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2239 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2240 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2241
2242 # parsers
2243 h264_parser_select="h264_decoder"
2244 hevc_parser_select="hevc_decoder"
2245 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2246 mpegvideo_parser_select="error_resilience mpegvideo"
2247 vc1_parser_select="mpegvideo"
2248
2249 # external libraries
2250 libaacplus_encoder_deps="libaacplus"
2251 libcelt_decoder_deps="libcelt"
2252 libfaac_encoder_deps="libfaac"
2253 libfaac_encoder_select="audio_frame_queue"
2254 libfdk_aac_decoder_deps="libfdk_aac"
2255 libfdk_aac_encoder_deps="libfdk_aac"
2256 libfdk_aac_encoder_select="audio_frame_queue"
2257 libgme_demuxer_deps="libgme"
2258 libgsm_decoder_deps="libgsm"
2259 libgsm_encoder_deps="libgsm"
2260 libgsm_ms_decoder_deps="libgsm"
2261 libgsm_ms_encoder_deps="libgsm"
2262 libilbc_decoder_deps="libilbc"
2263 libilbc_encoder_deps="libilbc"
2264 libmodplug_demuxer_deps="libmodplug"
2265 libmp3lame_encoder_deps="libmp3lame"
2266 libmp3lame_encoder_select="audio_frame_queue"
2267 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2268 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2269 libopencore_amrnb_encoder_select="audio_frame_queue"
2270 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2271 libopenjpeg_decoder_deps="libopenjpeg"
2272 libopenjpeg_encoder_deps="libopenjpeg"
2273 libopus_decoder_deps="libopus"
2274 libopus_encoder_deps="libopus"
2275 libopus_encoder_select="audio_frame_queue"
2276 libquvi_demuxer_deps="libquvi"
2277 libschroedinger_decoder_deps="libschroedinger"
2278 libschroedinger_encoder_deps="libschroedinger"
2279 libshine_encoder_deps="libshine"
2280 libshine_encoder_select="audio_frame_queue"
2281 libspeex_decoder_deps="libspeex"
2282 libspeex_encoder_deps="libspeex"
2283 libspeex_encoder_select="audio_frame_queue"
2284 libstagefright_h264_decoder_deps="libstagefright_h264"
2285 libtheora_encoder_deps="libtheora"
2286 libtwolame_encoder_deps="libtwolame"
2287 libvo_aacenc_encoder_deps="libvo_aacenc"
2288 libvo_aacenc_encoder_select="audio_frame_queue"
2289 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2290 libvorbis_decoder_deps="libvorbis"
2291 libvorbis_encoder_deps="libvorbis"
2292 libvorbis_encoder_select="audio_frame_queue"
2293 libvpx_vp8_decoder_deps="libvpx"
2294 libvpx_vp8_encoder_deps="libvpx"
2295 libvpx_vp9_decoder_deps="libvpx"
2296 libvpx_vp9_encoder_deps="libvpx"
2297 libwavpack_encoder_deps="libwavpack"
2298 libwebp_encoder_deps="libwebp"
2299 libx264_encoder_deps="libx264"
2300 libx264rgb_encoder_deps="libx264"
2301 libx265_encoder_deps="libx265"
2302 libxavs_encoder_deps="libxavs"
2303 libxvid_encoder_deps="libxvid"
2304 libutvideo_decoder_deps="libutvideo"
2305 libutvideo_encoder_deps="libutvideo"
2306 libzvbi_teletext_decoder_deps="libzvbi"
2307
2308 # demuxers / muxers
2309 ac3_demuxer_select="ac3_parser"
2310 asf_demuxer_select="riffdec"
2311 asf_muxer_select="riffenc"
2312 asf_stream_muxer_select="asf_muxer"
2313 avi_demuxer_select="riffdec exif"
2314 avi_muxer_select="riffenc"
2315 avisynth_demuxer_deps="avisynth"
2316 avisynth_demuxer_select="riffdec"
2317 caf_demuxer_select="riffdec"
2318 dirac_demuxer_select="dirac_parser"
2319 dts_demuxer_select="dca_parser"
2320 dtshd_demuxer_select="dca_parser"
2321 dxa_demuxer_select="riffdec"
2322 eac3_demuxer_select="ac3_parser"
2323 f4v_muxer_select="mov_muxer"
2324 flac_demuxer_select="flac_parser"
2325 hds_muxer_select="flv_muxer"
2326 hls_muxer_select="mpegts_muxer"
2327 image2_alias_pix_demuxer_select="image2_demuxer"
2328 image2_brender_pix_demuxer_select="image2_demuxer"
2329 ipod_muxer_select="mov_muxer"
2330 ismv_muxer_select="mov_muxer"
2331 libnut_demuxer_deps="libnut"
2332 libnut_muxer_deps="libnut"
2333 matroska_audio_muxer_select="matroska_muxer"
2334 matroska_demuxer_select="riffdec"
2335 matroska_demuxer_suggest="bzlib lzo zlib"
2336 matroska_muxer_select="riffenc"
2337 mmf_muxer_select="riffenc"
2338 mov_demuxer_select="riffdec"
2339 mov_demuxer_suggest="zlib"
2340 mov_muxer_select="riffenc rtpenc_chain"
2341 mp3_demuxer_select="mpegaudio_parser"
2342 mp4_muxer_select="mov_muxer"
2343 mpegts_muxer_select="adts_muxer latm_muxer"
2344 mpegtsraw_demuxer_select="mpegts_demuxer"
2345 mxf_d10_muxer_select="mxf_muxer"
2346 nut_muxer_select="riffenc"
2347 nuv_demuxer_select="riffdec"
2348 ogg_demuxer_select="golomb"
2349 psp_muxer_select="mov_muxer"
2350 rtp_demuxer_select="sdp_demuxer"
2351 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2352 rtsp_demuxer_select="http_protocol rtpdec"
2353 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2354 sap_demuxer_select="sdp_demuxer"
2355 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2356 sdp_demuxer_select="rtpdec"
2357 smoothstreaming_muxer_select="ismv_muxer"
2358 spdif_muxer_select="aac_parser"
2359 tak_demuxer_select="tak_parser"
2360 tg2_muxer_select="mov_muxer"
2361 tgp_muxer_select="mov_muxer"
2362 vobsub_demuxer_select="mpegps_demuxer"
2363 w64_demuxer_select="wav_demuxer"
2364 w64_muxer_select="wav_muxer"
2365 wav_demuxer_select="riffdec"
2366 wav_muxer_select="riffenc"
2367 webm_muxer_select="riffenc"
2368 wtv_demuxer_select="riffdec"
2369 wtv_muxer_select="riffenc"
2370 xmv_demuxer_select="riffdec"
2371 xwma_demuxer_select="riffdec"
2372
2373 # indevs / outdevs
2374 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2375 alsa_outdev_deps="alsa_asoundlib_h"
2376 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2377 avfoundation_indev_select="avfoundation"
2378 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2379 caca_outdev_deps="libcaca"
2380 decklink_outdev_deps="decklink pthreads"
2381 decklink_outdev_extralibs="-lstdc++"
2382 dshow_indev_deps="IBaseFilter"
2383 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2384 dv1394_indev_deps="dv1394"
2385 dv1394_indev_select="dv_demuxer"
2386 fbdev_indev_deps="linux_fb_h"
2387 fbdev_outdev_deps="linux_fb_h"
2388 gdigrab_indev_deps="CreateDIBSection"
2389 gdigrab_indev_extralibs="-lgdi32"
2390 gdigrab_indev_select="bmp_decoder"
2391 iec61883_indev_deps="libiec61883"
2392 jack_indev_deps="jack_jack_h sem_timedwait"
2393 lavfi_indev_deps="avfilter"
2394 libcdio_indev_deps="libcdio"
2395 libdc1394_indev_deps="libdc1394"
2396 libv4l2_indev_deps="libv4l2"
2397 openal_indev_deps="openal"
2398 opengl_outdev_deps="opengl"
2399 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2400 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2401 pulse_indev_deps="libpulse"
2402 pulse_outdev_deps="libpulse"
2403 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2404 qtkit_indev_select="qtkit"
2405 sdl_outdev_deps="sdl"
2406 sndio_indev_deps="sndio_h"
2407 sndio_outdev_deps="sndio_h"
2408 v4l_indev_deps="linux_videodev_h"
2409 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2410 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2411 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2412 vfwcap_indev_extralibs="-lavicap32"
2413 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2414 xv_outdev_extralibs="-lXv -lX11 -lXext"
2415 x11grab_indev_deps="x11grab"
2416
2417 # protocols
2418 bluray_protocol_deps="libbluray"
2419 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2420 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2421 ffrtmpcrypt_protocol_select="tcp_protocol"
2422 ffrtmphttp_protocol_deps="!librtmp_protocol"
2423 ffrtmphttp_protocol_select="http_protocol"
2424 ftp_protocol_select="tcp_protocol"
2425 gopher_protocol_select="network"
2426 http_protocol_select="tcp_protocol"
2427 httpproxy_protocol_select="tcp_protocol"
2428 https_protocol_select="tls_protocol"
2429 librtmp_protocol_deps="librtmp"
2430 librtmpe_protocol_deps="librtmp"
2431 librtmps_protocol_deps="librtmp"
2432 librtmpt_protocol_deps="librtmp"
2433 librtmpte_protocol_deps="librtmp"
2434 libssh_protocol_deps="libssh"
2435 mmsh_protocol_select="http_protocol"
2436 mmst_protocol_select="network"
2437 rtmp_protocol_deps="!librtmp_protocol"
2438 rtmp_protocol_select="tcp_protocol"
2439 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2440 rtmps_protocol_deps="!librtmp_protocol"
2441 rtmps_protocol_select="tls_protocol"
2442 rtmpt_protocol_select="ffrtmphttp_protocol"
2443 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2444 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2445 rtp_protocol_select="udp_protocol"
2446 sctp_protocol_deps="struct_sctp_event_subscribe"
2447 sctp_protocol_select="network"
2448 srtp_protocol_select="rtp_protocol"
2449 tcp_protocol_select="network"
2450 tls_protocol_deps_any="openssl gnutls"
2451 tls_protocol_select="tcp_protocol"
2452 udp_protocol_select="network"
2453 unix_protocol_deps="sys_un_h"
2454 unix_protocol_select="network"
2455
2456 # filters
2457 aconvert_filter_deps="swresample"
2458 amovie_filter_deps="avcodec avformat"
2459 aresample_filter_deps="swresample"
2460 ass_filter_deps="libass"
2461 asyncts_filter_deps="avresample"
2462 atempo_filter_deps="avcodec"
2463 atempo_filter_select="rdft"
2464 azmq_filter_deps="libzmq"
2465 blackframe_filter_deps="gpl"
2466 boxblur_filter_deps="gpl"
2467 colormatrix_filter_deps="gpl"
2468 cropdetect_filter_deps="gpl"
2469 dctdnoiz_filter_deps="avcodec"
2470 dctdnoiz_filter_select="dct"
2471 delogo_filter_deps="gpl"
2472 deshake_filter_deps="avcodec"
2473 deshake_filter_select="dsputil"
2474 drawtext_filter_deps="libfreetype"
2475 ebur128_filter_deps="gpl"
2476 flite_filter_deps="libflite"
2477 frei0r_filter_deps="frei0r dlopen"
2478 frei0r_filter_extralibs='$ldl'
2479 frei0r_src_filter_deps="frei0r dlopen"
2480 frei0r_src_filter_extralibs='$ldl'
2481 geq_filter_deps="gpl"
2482 histeq_filter_deps="gpl"
2483 hqdn3d_filter_deps="gpl"
2484 interlace_filter_deps="gpl"
2485 kerndeint_filter_deps="gpl"
2486 ladspa_filter_deps="ladspa dlopen"
2487 mcdeint_filter_deps="avcodec gpl"
2488 movie_filter_deps="avcodec avformat"
2489 mp_filter_deps="gpl avcodec swscale inline_asm"
2490 mpdecimate_filter_deps="gpl avcodec"
2491 mptestsrc_filter_deps="gpl"
2492 negate_filter_deps="lut_filter"
2493 perspective_filter_deps="gpl"
2494 ocv_filter_deps="libopencv"
2495 owdenoise_filter_deps="gpl"
2496 pan_filter_deps="swresample"
2497 phase_filter_deps="gpl"
2498 pp_filter_deps="gpl postproc"
2499 pullup_filter_deps="gpl"
2500 removelogo_filter_deps="avcodec avformat swscale"
2501 resample_filter_deps="avresample"
2502 sab_filter_deps="gpl swscale"
2503 scale_filter_deps="swscale"
2504 smartblur_filter_deps="gpl swscale"
2505 showspectrum_filter_deps="avcodec"
2506 showspectrum_filter_select="rdft"
2507 spp_filter_deps="gpl avcodec"
2508 spp_filter_select="fft"
2509 stereo3d_filter_deps="gpl"
2510 subtitles_filter_deps="avformat avcodec libass"
2511 super2xsai_filter_deps="gpl"
2512 tinterlace_filter_deps="gpl"
2513 vidstabdetect_filter_deps="libvidstab"
2514 vidstabtransform_filter_deps="libvidstab"
2515 pixfmts_super2xsai_test_deps="super2xsai_filter"
2516 tinterlace_merge_test_deps="tinterlace_filter"
2517 tinterlace_pad_test_deps="tinterlace_filter"
2518 zmq_filter_deps="libzmq"
2519
2520 # examples
2521 avio_reading="avformat avcodec avutil"
2522 avcodec_example_deps="avcodec avutil"
2523 demuxing_decoding_example_deps="avcodec avformat avutil"
2524 filter_audio_example_deps="avfilter avutil"
2525 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2526 filtering_video_example_deps="avfilter avcodec avformat avutil"
2527 metadata_example_deps="avformat avutil"
2528 muxing_example_deps="avcodec avformat avutil swscale"
2529 remuxing_example_deps="avcodec avformat avutil"
2530 resampling_audio_example_deps="avutil swresample"
2531 scaling_video_example_deps="avutil swscale"
2532 transcode_aac_example_deps="avcodec avformat swresample"
2533 transcoding_example_deps="avfilter avcodec avformat avutil"
2534
2535 # libraries
2536 avcodec_deps="avutil"
2537 avdevice_deps="avutil avcodec avformat"
2538 avfilter_deps="avutil"
2539 avformat_deps="avutil avcodec"
2540 avresample_deps="avutil"
2541 postproc_deps="avutil gpl"
2542 swscale_deps="avutil"
2543
2544 # programs
2545 ffmpeg_deps="avcodec avfilter avformat swresample"
2546 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2547                null_filter
2548                setpts_filter trim_filter"
2549 ffplay_deps="avcodec avformat swscale swresample sdl"
2550 ffplay_libs='$sdl_libs'
2551 ffplay_select="rdft crop_filter"
2552 ffprobe_deps="avcodec avformat"
2553 ffserver_deps="avformat fork sarestart"
2554 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2555
2556 # documentation
2557 podpages_deps="perl"
2558 manpages_deps="perl pod2man"
2559 htmlpages_deps="perl texi2html"
2560 txtpages_deps="perl makeinfo"
2561 doc_deps_any="manpages htmlpages podpages txtpages"
2562
2563 # default parameters
2564
2565 logfile="config.log"
2566
2567 # installation paths
2568 prefix_default="/usr/local"
2569 bindir_default='${prefix}/bin'
2570 datadir_default='${prefix}/share/ffmpeg'
2571 docdir_default='${prefix}/share/doc/ffmpeg'
2572 incdir_default='${prefix}/include'
2573 libdir_default='${prefix}/lib'
2574 mandir_default='${prefix}/share/man'
2575 shlibdir_default="$libdir_default"
2576
2577 # toolchain
2578 ar_default="ar"
2579 cc_default="gcc"
2580 cxx_default="g++"
2581 host_cc_default="gcc"
2582 cp_f="cp -f"
2583 install="install"
2584 ln_s="ln -s -f"
2585 nm_default="nm -g"
2586 objformat="elf"
2587 pkg_config_default=pkg-config
2588 ranlib_default="ranlib"
2589 strip_default="strip"
2590 yasmexe_default="yasm"
2591 windres_default="windres"
2592
2593 nogas=":"
2594
2595 # OS
2596 target_os_default=$(tolower $(uname -s))
2597 host_os=$target_os_default
2598
2599 # machine
2600 if test "$target_os_default" = aix; then
2601     arch_default=$(uname -p)
2602 else
2603     arch_default=$(uname -m)
2604 fi
2605 cpu="generic"
2606
2607 # configurable options
2608 enable $PROGRAM_LIST
2609 enable $DOCUMENT_LIST
2610 enable $EXAMPLE_LIST
2611 enable $(filter_out avresample $LIBRARY_LIST)
2612 enable stripping
2613
2614 enable asm
2615 enable debug
2616 enable doc
2617 enable optimizations
2618 enable runtime_cpudetect
2619 enable safe_bitstream_reader
2620 enable static
2621 enable swscale_alpha
2622
2623 # Enable hwaccels by default.
2624 enable dxva2 vaapi vda vdpau xvmc
2625 enable xlib
2626
2627 # build settings
2628 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2629 LIBPREF="lib"
2630 LIBSUF=".a"
2631 FULLNAME='$(NAME)$(BUILDSUF)'
2632 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2633 SLIBPREF="lib"
2634 SLIBSUF=".so"
2635 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2636 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2637 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2638 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2639 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2640 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2641
2642 asflags_filter=echo
2643 cflags_filter=echo
2644 ldflags_filter=echo
2645
2646 AS_C='-c'
2647 AS_O='-o $@'
2648 CC_C='-c'
2649 CC_E='-E -o $@'
2650 CC_O='-o $@'
2651 CXX_C='-c'
2652 CXX_O='-o $@'
2653 LD_O='-o $@'
2654 LD_LIB='-l%'
2655 LD_PATH='-L'
2656 HOSTCC_C='-c'
2657 HOSTCC_E='-E -o $@'
2658 HOSTCC_O='-o $@'
2659 HOSTLD_O='-o $@'
2660
2661 host_libs='-lm'
2662 host_cflags_filter=echo
2663 host_ldflags_filter=echo
2664
2665 target_path='$(CURDIR)'
2666
2667 # since the object filename is not given with the -MM flag, the compiler
2668 # is only able to print the basename, and we must add the path ourselves
2669 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2670 DEPFLAGS='-MM'
2671
2672 # find source path
2673 if test -f configure; then
2674     source_path=.
2675 else
2676     source_path=$(cd $(dirname "$0"); pwd)
2677     echo "$source_path" | grep -q '[[:blank:]]' &&
2678         die "Out of tree builds are impossible with whitespace in source path."
2679     test -e "$source_path/config.h" &&
2680         die "Out of tree builds are impossible with config.h in source dir."
2681 fi
2682
2683 for v in "$@"; do
2684     r=${v#*=}
2685     l=${v%"$r"}
2686     r=$(sh_quote "$r")
2687     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2688 done
2689
2690 find_things(){
2691     thing=$1
2692     pattern=$2
2693     file=$source_path/$3
2694     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2695 }
2696
2697 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2698 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2699 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2700 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2701 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2702 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2703 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2704 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2705 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2706 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2707 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2708
2709 ALL_COMPONENTS="
2710     $BSF_LIST
2711     $DECODER_LIST
2712     $DEMUXER_LIST
2713     $ENCODER_LIST
2714     $FILTER_LIST
2715     $HWACCEL_LIST
2716     $INDEV_LIST
2717     $MUXER_LIST
2718     $OUTDEV_LIST
2719     $PARSER_LIST
2720     $PROTOCOL_LIST
2721 "
2722
2723 for n in $COMPONENT_LIST; do
2724     v=$(toupper ${n%s})_LIST
2725     eval enable \$$v
2726     eval ${n}_if_any="\$$v"
2727 done
2728
2729 enable $ARCH_EXT_LIST
2730
2731 die_unknown(){
2732     echo "Unknown option \"$1\"."
2733     echo "See $0 --help for available options."
2734     exit 1
2735 }
2736
2737 print_3_columns() {
2738     cat | tr ' ' '\n' | sort | pr -r -3 -t
2739 }
2740
2741 show_list() {
2742     suffix=_$1
2743     shift
2744     echo $* | sed s/$suffix//g | print_3_columns
2745     exit 0
2746 }
2747
2748 rand_list(){
2749     IFS=', '
2750     set -- $*
2751     unset IFS
2752     for thing; do
2753         comp=${thing%:*}
2754         prob=${thing#$comp}
2755         prob=${prob#:}
2756         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2757         echo "prob ${prob:-0.5}"
2758         printf '%s\n' $comp
2759     done
2760 }
2761
2762 do_random(){
2763     action=$1
2764     shift
2765     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2766     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2767 }
2768
2769 for opt do
2770     optval="${opt#*=}"
2771     case "$opt" in
2772         --extra-ldflags=*)
2773             add_ldflags $optval
2774         ;;
2775         --extra-libs=*)
2776             add_extralibs $optval
2777         ;;
2778         --disable-devices)
2779             disable $INDEV_LIST $OUTDEV_LIST
2780         ;;
2781         --enable-debug=*)
2782             debuglevel="$optval"
2783         ;;
2784         --disable-programs)
2785             disable $PROGRAM_LIST
2786         ;;
2787         --disable-everything)
2788             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2789         ;;
2790         --disable-all)
2791             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2792             disable $LIBRARY_LIST $PROGRAM_LIST doc
2793         ;;
2794         --enable-random|--disable-random)
2795             action=${opt%%-random}
2796             do_random ${action#--} $COMPONENT_LIST
2797         ;;
2798         --enable-random=*|--disable-random=*)
2799             action=${opt%%-random=*}
2800             do_random ${action#--} $optval
2801         ;;
2802         --enable-*=*|--disable-*=*)
2803             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2804             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2805             eval list=\$$(toupper $thing)_LIST
2806             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2807             list=$(filter "$name" $list)
2808             [ "$list" = "" ] && warn "Option $opt did not match anything"
2809             $action $list
2810         ;;
2811         --enable-?*|--disable-?*)
2812             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2813             if is_in $option $COMPONENT_LIST; then
2814                 test $action = disable && action=unset
2815                 eval $action \$$(toupper ${option%s})_LIST
2816             elif is_in $option $CMDLINE_SELECT; then
2817                 $action $option
2818             else
2819                 die_unknown $opt
2820             fi
2821         ;;
2822         --list-*)
2823             NAME="${opt#--list-}"
2824             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2825             NAME=${NAME%s}
2826             eval show_list $NAME \$$(toupper $NAME)_LIST
2827         ;;
2828         --help|-h) show_help
2829         ;;
2830         --fatal-warnings) enable fatal_warnings
2831         ;;
2832         *)
2833             optname="${opt%%=*}"
2834             optname="${optname#--}"
2835             optname=$(echo "$optname" | sed 's/-/_/g')
2836             if is_in $optname $CMDLINE_SET; then
2837                 eval $optname='$optval'
2838             elif is_in $optname $CMDLINE_APPEND; then
2839                 append $optname "$optval"
2840             else
2841                 die_unknown $opt
2842             fi
2843         ;;
2844     esac
2845 done
2846
2847 disabled logging && logfile=/dev/null
2848
2849 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2850 set >> $logfile
2851
2852 test -n "$cross_prefix" && enable cross_compile
2853
2854 if enabled cross_compile; then
2855     test -n "$arch" && test -n "$target_os" ||
2856         die "Must specify target arch and OS when cross-compiling"
2857 fi
2858
2859 ar_default="${cross_prefix}${ar_default}"
2860 cc_default="${cross_prefix}${cc_default}"
2861 cxx_default="${cross_prefix}${cxx_default}"
2862 nm_default="${cross_prefix}${nm_default}"
2863 pkg_config_default="${cross_prefix}${pkg_config_default}"
2864 ranlib_default="${cross_prefix}${ranlib_default}"
2865 strip_default="${cross_prefix}${strip_default}"
2866 windres_default="${cross_prefix}${windres_default}"
2867
2868 sysinclude_default="${sysroot}/usr/include"
2869
2870 test -n "$valgrind" && toolchain="valgrind-memcheck"
2871
2872 case "$toolchain" in
2873     clang-asan)
2874         cc_default="clang"
2875         add_cflags  -fsanitize=address
2876         add_ldflags -fsanitize=address
2877     ;;
2878     clang-tsan)
2879         cc_default="clang"
2880         add_cflags  -fsanitize=thread -pie
2881         add_ldflags -fsanitize=thread -pie
2882     ;;
2883     clang-usan)
2884         cc_default="clang"
2885         add_cflags  -fsanitize=undefined
2886         add_ldflags -fsanitize=undefined
2887     ;;
2888     gcc-asan)
2889         cc_default="gcc"
2890         add_cflags  -fsanitize=address
2891         add_ldflags -fsanitize=address
2892     ;;
2893     gcc-tsan)
2894         cc_default="gcc"
2895         add_cflags  -fsanitize=thread -pie -fPIC
2896         add_ldflags -fsanitize=thread -pie -fPIC
2897     ;;
2898     gcc-usan)
2899         cc_default="gcc"
2900         add_cflags  -fsanitize=undefined
2901         add_ldflags -fsanitize=undefined
2902     ;;
2903     valgrind-massif)
2904         target_exec_default=${valgrind:-"valgrind"}
2905         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"
2906     ;;
2907     valgrind-memcheck)
2908         target_exec_default=${valgrind:-"valgrind"}
2909         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2910     ;;
2911     msvc)
2912         # Check whether the current MSVC version needs the C99 converter.
2913         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2914         # support enough of C99 to build ffmpeg. Default to the new
2915         # behaviour if the regexp was unable to match anything, since this
2916         # successfully parses the version number of existing supported
2917         # versions that require the converter (MSVC 2010 and 2012).
2918         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2919         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2920             cc_default="cl"
2921         else
2922             cc_default="c99wrap cl"
2923         fi
2924         ld_default="link"
2925         nm_default="dumpbin -symbols"
2926         ar_default="lib"
2927         target_os_default="win32"
2928         # Use a relative path for TMPDIR. This makes sure all the
2929         # ffconf temp files are written with a relative path, avoiding
2930         # issues with msys/win32 path conversion for MSVC parameters
2931         # such as -Fo<file> or -out:<file>.
2932         TMPDIR=.
2933     ;;
2934     icl)
2935         cc_default="icl"
2936         ld_default="xilink"
2937         nm_default="dumpbin -symbols"
2938         ar_default="xilib"
2939         target_os_default="win32"
2940         TMPDIR=.
2941     ;;
2942     gcov)
2943         add_cflags  -fprofile-arcs -ftest-coverage
2944         add_ldflags -fprofile-arcs -ftest-coverage
2945     ;;
2946     hardened)
2947         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2948         add_ldflags -Wl,-z,relro -Wl,-z,now
2949     ;;
2950     ?*)
2951         die "Unknown toolchain $toolchain"
2952     ;;
2953 esac
2954
2955 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2956 enabled cross_compile || host_cc_default=$cc
2957 set_default host_cc
2958
2959 if ! $pkg_config --version >/dev/null 2>&1; then
2960     warn "$pkg_config not found, library detection may fail."
2961     pkg_config=false
2962 fi
2963
2964 exesuf() {
2965     case $1 in
2966         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2967     esac
2968 }
2969
2970 EXESUF=$(exesuf $target_os)
2971 HOSTEXESUF=$(exesuf $host_os)
2972
2973 # set temporary file name
2974 : ${TMPDIR:=$TEMPDIR}
2975 : ${TMPDIR:=$TMP}
2976 : ${TMPDIR:=/tmp}
2977
2978 if [ -n "$tempprefix" ] ; then
2979     mktemp(){
2980         echo $tempprefix.${HOSTNAME}.${UID}
2981     }
2982 elif ! check_cmd mktemp -u XXXXXX; then
2983     # simple replacement for missing mktemp
2984     # NOT SAFE FOR GENERAL USE
2985     mktemp(){
2986         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2987     }
2988 fi
2989
2990 tmpfile(){
2991     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2992         (set -C; exec > $tmp) 2>/dev/null ||
2993         die "Unable to create temporary file in $TMPDIR."
2994     append TMPFILES $tmp
2995     eval $1=$tmp
2996 }
2997
2998 trap 'rm -f -- $TMPFILES' EXIT
2999
3000 tmpfile TMPASM .asm
3001 tmpfile TMPC   .c
3002 tmpfile TMPCPP .cpp
3003 tmpfile TMPE   $EXESUF
3004 tmpfile TMPH   .h
3005 tmpfile TMPM   .m
3006 tmpfile TMPO   .o
3007 tmpfile TMPS   .S
3008 tmpfile TMPSH  .sh
3009 tmpfile TMPV   .ver
3010
3011 unset -f mktemp
3012
3013 chmod +x $TMPE
3014
3015 # make sure we can execute files in $TMPDIR
3016 cat > $TMPSH 2>> $logfile <<EOF
3017 #! /bin/sh
3018 EOF
3019 chmod +x $TMPSH >> $logfile 2>&1
3020 if ! $TMPSH >> $logfile 2>&1; then
3021     cat <<EOF
3022 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3023 variable to another directory and make sure that it is not mounted noexec.
3024 EOF
3025     die "Sanity test failed."
3026 fi
3027
3028 ccc_flags(){
3029     for flag; do
3030         case $flag in
3031             -std=c99)           echo -c99                       ;;
3032             -mcpu=*)            echo -arch ${flag#*=}           ;;
3033             -mieee)             echo -ieee                      ;;
3034             -O*|-fast)          echo $flag                      ;;
3035             -fno-math-errno)    echo -assume nomath_errno       ;;
3036             -g)                 echo -g3                        ;;
3037             -Wall)              echo -msg_enable level2         ;;
3038             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3039             -Wl,*)              echo $flag                      ;;
3040             -f*|-W*)                                            ;;
3041             *)                  echo $flag                      ;;
3042         esac
3043    done
3044 }
3045
3046 cparser_flags(){
3047     for flag; do
3048         case $flag in
3049             -Wno-switch)             echo -Wno-switch-enum ;;
3050             -Wno-format-zero-length) ;;
3051             -Wdisabled-optimization) ;;
3052             -Wno-pointer-sign)       echo -Wno-other ;;
3053             *)                       echo $flag ;;
3054         esac
3055     done
3056 }
3057
3058 msvc_common_flags(){
3059     for flag; do
3060         case $flag in
3061             # In addition to specifying certain flags under the compiler
3062             # specific filters, they must be specified here as well or else the
3063             # generic catch all at the bottom will print the original flag.
3064             -Wall)                ;;
3065             -std=c99)             ;;
3066             # Common flags
3067             -fomit-frame-pointer) ;;
3068             -g)                   echo -Z7 ;;
3069             -fno-math-errno)      ;;
3070             -fno-common)          ;;
3071             -fno-signed-zeros)    ;;
3072             -fPIC)                ;;
3073             -mthumb)              ;;
3074             -march=*)             ;;
3075             -lz)                  echo zlib.lib ;;
3076             -lavifil32)           echo vfw32.lib ;;
3077             -lavicap32)           echo vfw32.lib user32.lib ;;
3078             -l*)                  echo ${flag#-l}.lib ;;
3079             *)                    echo $flag ;;
3080         esac
3081     done
3082 }
3083
3084 msvc_flags(){
3085     msvc_common_flags "$@"
3086     for flag; do
3087         case $flag in
3088             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3089                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3090                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3091                                        -wd4554 \
3092                                        -wd4273 ;;
3093         esac
3094     done
3095 }
3096
3097 icl_flags(){
3098     msvc_common_flags "$@"
3099     for flag; do
3100         case $flag in
3101             # Despite what Intel's documentation says -Wall, which is supported
3102             # on Windows, does enable remarks so disable them here.
3103             -Wall)                echo $flag -Qdiag-disable:remark ;;
3104             -std=c99)             echo -Qstd=c99 ;;
3105         esac
3106     done
3107 }
3108
3109 pgi_flags(){
3110     for flag; do
3111         case $flag in
3112             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3113             -fomit-frame-pointer) echo -Mnoframe ;;
3114             -g)                   echo -gopt ;;
3115             *)                    echo $flag ;;
3116         esac
3117     done
3118 }
3119
3120 suncc_flags(){
3121     for flag; do
3122         case $flag in
3123             -march=*|-mcpu=*)
3124                 case "${flag#*=}" in
3125                     native)                   echo -xtarget=native       ;;
3126                     v9|niagara)               echo -xarch=sparc          ;;
3127                     ultrasparc)               echo -xarch=sparcvis       ;;
3128                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3129                     i586|pentium)             echo -xchip=pentium        ;;
3130                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3131                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3132                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3133                     pentium4*)          echo -xtarget=pentium4           ;;
3134                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3135                     *-sse3)             echo -xarch=sse3                 ;;
3136                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3137                     bonnell)                   echo -xarch=ssse3         ;;
3138                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3139                     westmere)                  echo -xtarget=westmere    ;;
3140                     silvermont)                echo -xarch=sse4_2        ;;
3141                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3142                     core-avx*|ivybridge|haswell|broadwell)
3143                                                echo -xarch=avx           ;;
3144                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3145                     btver1)                    echo -xarch=amdsse4a      ;;
3146                     btver2|bdver*)             echo -xarch=avx           ;;
3147                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3148                     k8|opteron|athlon64|athlon-fx)
3149                                                echo -xarch=sse2a         ;;
3150                     athlon*)                   echo -xarch=pentium_proa  ;;
3151                 esac
3152                 ;;
3153             -std=c99)             echo -xc99              ;;
3154             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3155             -fPIC)                echo -KPIC -xcode=pic32 ;;
3156             -W*,*)                echo $flag              ;;
3157             -f*-*|-W*|-mimpure-text)                      ;;
3158             -shared)              echo -G                 ;;
3159             *)                    echo $flag              ;;
3160         esac
3161     done
3162 }
3163
3164 tms470_flags(){
3165     for flag; do
3166         case $flag in
3167             -march=*|-mcpu=*)
3168                 case "${flag#*=}" in
3169                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3170                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3171                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3172                     armv6*|arm11*)          echo -mv=6   ;;
3173                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3174                                             echo -mv=5e  ;;
3175                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3176                 esac
3177                 ;;
3178             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3179             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3180             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3181             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3182             -msoft-float)   echo --float_support=vfplib       ;;
3183             -O[0-3]|-mf=*)  echo $flag                        ;;
3184             -g)             echo -g -mn                       ;;
3185             -pds=*)         echo $flag                        ;;
3186             -D*|-I*)        echo $flag                        ;;
3187             --gcc|--abi=*)  echo $flag                        ;;
3188             -me)            echo $flag                        ;;
3189         esac
3190     done
3191 }
3192
3193 probe_cc(){
3194     pfx=$1
3195     _cc=$2
3196
3197     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3198     unset _ld_o _ldflags _ld_lib _ld_path
3199     unset _depflags _DEPCMD _DEPFLAGS
3200     _flags_filter=echo
3201
3202     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3203         true # no-op to avoid reading stdin in following checks
3204     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3205         _type=llvm_gcc
3206         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3207         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3208         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3209         _cflags_speed='-O3'
3210         _cflags_size='-Os'
3211     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3212         _type=gcc
3213         gcc_version=$($_cc --version | head -n1)
3214         gcc_basever=$($_cc -dumpversion)
3215         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3216         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3217         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3218         if ! $_cc -dumpversion | grep -q '^2\.'; then
3219             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3220         fi
3221         _cflags_speed='-O3'
3222         _cflags_size='-Os'
3223     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3224         _type=icc
3225         _ident=$($_cc --version | head -n1)
3226         _depflags='-MMD'
3227         _cflags_speed='-O3'
3228         _cflags_size='-Os'
3229         _cflags_noopt='-O1'
3230     elif $_cc -v 2>&1 | grep -q xlc; then
3231         _type=xlc
3232         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3233         _cflags_speed='-O5'
3234         _cflags_size='-O5 -qcompact'
3235     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3236         _type=ccc
3237         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3238         _DEPFLAGS='-M'
3239         _cflags_speed='-fast'
3240         _cflags_size='-O1'
3241         _flags_filter=ccc_flags
3242     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3243         test -d "$sysroot" || die "No valid sysroot specified."
3244         _type=armcc
3245         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3246         armcc_conf="$PWD/armcc.conf"
3247         $_cc --arm_linux_configure                 \
3248              --arm_linux_config_file="$armcc_conf" \
3249              --configure_sysroot="$sysroot"        \
3250              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3251              die "Error creating armcc configuration file."
3252         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3253         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3254         as_default="${cross_prefix}gcc"
3255         _depflags='-MMD'
3256         _cflags_speed='-O3'
3257         _cflags_size='-Os'
3258     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3259         _type=tms470
3260         _ident=$($_cc -version | head -n1 | tr -s ' ')
3261         _flags='--gcc --abi=eabi -me'
3262         _cc_e='-ppl -fe=$@'
3263         _cc_o='-fe=$@'
3264         _depflags='-ppa -ppd=$(@:.o=.d)'
3265         _cflags_speed='-O3 -mf=5'
3266         _cflags_size='-O3 -mf=2'
3267         _flags_filter=tms470_flags
3268     elif $_cc -v 2>&1 | grep -q clang; then
3269         _type=clang
3270         _ident=$($_cc --version | head -n1)
3271         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3272         _cflags_speed='-O3'
3273         _cflags_size='-Os'
3274     elif $_cc -V 2>&1 | grep -q Sun; then
3275         _type=suncc
3276         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3277         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3278         _DEPFLAGS='-xM1 -xc99'
3279         _ldflags='-std=c99'
3280         _cflags_speed='-O5'
3281         _cflags_size='-O5 -xspace'
3282         _flags_filter=suncc_flags
3283     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3284         _type=pathscale
3285         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3286         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3287         _cflags_speed='-O2'
3288         _cflags_size='-Os'
3289         _flags_filter='filter_out -Wdisabled-optimization'
3290     elif $_cc -v 2>&1 | grep -q Open64; then
3291         _type=open64
3292         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3293         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3294         _cflags_speed='-O2'
3295         _cflags_size='-Os'
3296         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3297     elif $_cc -V 2>&1 | grep -q Portland; then
3298         _type=pgi
3299         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3300         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3301         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3302         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3303         _cflags_noopt="-O"
3304         _flags_filter=pgi_flags
3305     elif $_cc 2>&1 | grep -q Microsoft; then
3306         _type=msvc
3307         _ident=$($cc 2>&1 | head -n1)
3308         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3309         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3310         _cflags_speed="-O2"
3311         _cflags_size="-O1"
3312         if $_cc 2>&1 | grep -q Linker; then
3313             _ld_o='-out:$@'
3314         else
3315             _ld_o='-Fe$@'
3316         fi
3317         _cc_o='-Fo$@'
3318         _cc_e='-P -Fi$@'
3319         _flags_filter=msvc_flags
3320         _ld_lib='lib%.a'
3321         _ld_path='-libpath:'
3322         _flags='-nologo'
3323         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3324         if [ $pfx = hostcc ]; then
3325             append _cflags -Dsnprintf=_snprintf
3326         fi
3327         disable stripping
3328     elif $_cc 2>&1 | grep -q Intel; then
3329         _type=icl
3330         _ident=$($cc 2>&1 | head -n1)
3331         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3332         # Not only is O3 broken on 13.x+ but it is slower on all previous
3333         # versions (tested) as well.
3334         _cflags_speed="-O2"
3335         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3336         if $_cc 2>&1 | grep -q Linker; then
3337             _ld_o='-out:$@'
3338         else
3339             _ld_o='-Fe$@'
3340         fi
3341         _cc_o='-Fo$@'
3342         _cc_e='-P'
3343         _flags_filter=icl_flags
3344         _ld_lib='lib%.a'
3345         _ld_path='-libpath:'
3346         # -Qdiag-error to make icl error when seeing certain unknown arguments
3347         _flags='-nologo -Qdiag-error:4044,10157'
3348         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3349         # with MSVC which enables it by default.
3350         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3351         if [ $pfx = hostcc ]; then
3352             append _cflags -Dsnprintf=_snprintf
3353         fi
3354     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3355         _type=cparser
3356         _ident=$($_cc --version | head -n1)
3357         _depflags='-MMD'
3358         _cflags_speed='-O4'
3359         _cflags_size='-O2'
3360         _flags_filter=cparser_flags
3361     fi
3362
3363     eval ${pfx}_type=\$_type
3364     eval ${pfx}_ident=\$_ident
3365 }
3366
3367 set_ccvars(){
3368     eval ${1}_C=\${_cc_c-\${${1}_C}}
3369     eval ${1}_E=\${_cc_e-\${${1}_E}}
3370     eval ${1}_O=\${_cc_o-\${${1}_O}}
3371
3372     if [ -n "$_depflags" ]; then
3373         eval ${1}_DEPFLAGS=\$_depflags
3374     else
3375         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3376         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3377         eval DEP${1}FLAGS=\$_flags
3378     fi
3379 }
3380
3381 probe_cc cc "$cc"
3382 cflags_filter=$_flags_filter
3383 cflags_speed=$_cflags_speed
3384 cflags_size=$_cflags_size
3385 cflags_noopt=$_cflags_noopt
3386 add_cflags $_flags $_cflags
3387 cc_ldflags=$_ldflags
3388 set_ccvars CC
3389
3390 probe_cc hostcc "$host_cc"
3391 host_cflags_filter=$_flags_filter
3392 add_host_cflags  $_flags $_cflags
3393 set_ccvars HOSTCC
3394
3395 test -n "$cc_type" && enable $cc_type ||
3396     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3397
3398 : ${as_default:=$cc}
3399 : ${dep_cc_default:=$cc}
3400 : ${ld_default:=$cc}
3401 : ${host_ld_default:=$host_cc}
3402 set_default ar as dep_cc ld host_ld windres
3403
3404 probe_cc as "$as"
3405 asflags_filter=$_flags_filter
3406 add_asflags $_flags $_cflags
3407 set_ccvars AS
3408
3409 probe_cc ld "$ld"
3410 ldflags_filter=$_flags_filter
3411 add_ldflags $_flags $_ldflags
3412 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3413 LD_O=${_ld_o-$LD_O}
3414 LD_LIB=${_ld_lib-$LD_LIB}
3415 LD_PATH=${_ld_path-$LD_PATH}
3416
3417 probe_cc hostld "$host_ld"
3418 host_ldflags_filter=$_flags_filter
3419 add_host_ldflags $_flags $_ldflags
3420 HOSTLD_O=${_ld_o-$HOSTLD_O}
3421
3422 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3423     probe_cc depcc "$dep_cc"
3424     CCDEP=${_DEPCMD:-$DEPCMD}
3425     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3426     DEPCCFLAGS=$_flags
3427 fi
3428
3429 if $ar 2>&1 | grep -q Microsoft; then
3430     arflags="-nologo"
3431     ar_o='-out:$@'
3432 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3433     arflags="rq"
3434     ar_o='$@'
3435 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3436     arflags='-Xany -r -c'
3437     ar_o='$@'
3438 else
3439     arflags="rc"
3440     ar_o='$@'
3441 fi
3442
3443 add_cflags $extra_cflags
3444 add_cxxflags $extra_cxxflags
3445 add_asflags $extra_cflags
3446
3447 if test -n "$sysroot"; then
3448     case "$cc_type" in
3449         gcc|llvm_gcc|clang)
3450             add_cppflags --sysroot="$sysroot"
3451             add_ldflags --sysroot="$sysroot"
3452 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3453             add_cppflags -isysroot "$sysroot"
3454             add_ldflags -isysroot "$sysroot"
3455         ;;
3456         tms470)
3457             add_cppflags -I"$sysinclude"
3458             add_ldflags  --sysroot="$sysroot"
3459         ;;
3460     esac
3461 fi
3462
3463 if test "$cpu" = host; then
3464     enabled cross_compile &&
3465         die "--cpu=host makes no sense when cross-compiling."
3466
3467     case "$cc_type" in
3468         gcc|llvm_gcc)
3469             check_native(){
3470                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3471                 sed -n "/cc1.*$1=/{
3472                             s/.*$1=\\([^ ]*\\).*/\\1/
3473                             p
3474                             q
3475                         }" $TMPE
3476             }
3477             cpu=$(check_native -march || check_native -mcpu)
3478         ;;
3479     esac
3480
3481     test "${cpu:-host}" = host &&
3482         die "--cpu=host not supported with compiler $cc"
3483 fi
3484
3485 # Deal with common $arch aliases
3486 case "$arch" in
3487     aarch64|arm64)
3488         arch="aarch64"
3489     ;;
3490     arm*|iPad*|iPhone*)
3491         arch="arm"
3492     ;;
3493     mips*|IP*)
3494         arch="mips"
3495     ;;
3496     parisc*|hppa*)
3497         arch="parisc"
3498     ;;
3499     "Power Macintosh"|ppc*|powerpc*)
3500         arch="ppc"
3501     ;;
3502     s390|s390x)
3503         arch="s390"
3504     ;;
3505     sh4|sh)
3506         arch="sh4"
3507     ;;
3508     sun4u|sparc*)
3509         arch="sparc"
3510     ;;
3511     tilegx|tile-gx)
3512         arch="tilegx"
3513     ;;
3514     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3515         arch="x86"
3516     ;;
3517 esac
3518
3519 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3520 enable $arch
3521
3522 # Add processor-specific flags
3523 if enabled aarch64; then
3524
3525     case $cpu in
3526         armv*)
3527             cpuflags="-march=$cpu"
3528         ;;
3529         *)
3530             cpuflags="-mcpu=$cpu"
3531         ;;
3532     esac
3533
3534 elif enabled alpha; then
3535
3536     cpuflags="-mcpu=$cpu"
3537
3538 elif enabled arm; then
3539
3540     check_arm_arch() {
3541         check_cpp_condition stddef.h \
3542             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3543             $cpuflags
3544     }
3545
3546     probe_arm_arch() {
3547         if   check_arm_arch 4;        then echo armv4;
3548         elif check_arm_arch 4T;       then echo armv4t;
3549         elif check_arm_arch 5;        then echo armv5;
3550         elif check_arm_arch 5E;       then echo armv5e;
3551         elif check_arm_arch 5T;       then echo armv5t;
3552         elif check_arm_arch 5TE;      then echo armv5te;
3553         elif check_arm_arch 5TEJ;     then echo armv5te;
3554         elif check_arm_arch 6;        then echo armv6;
3555         elif check_arm_arch 6J;       then echo armv6j;
3556         elif check_arm_arch 6K;       then echo armv6k;
3557         elif check_arm_arch 6Z;       then echo armv6z;
3558         elif check_arm_arch 6ZK;      then echo armv6zk;
3559         elif check_arm_arch 6T2;      then echo armv6t2;
3560         elif check_arm_arch 7;        then echo armv7;
3561         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3562         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3563         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3564         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3565         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3566         fi
3567     }
3568
3569     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3570
3571     case $cpu in
3572         armv*)
3573             cpuflags="-march=$cpu"
3574             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3575         ;;
3576         *)
3577             cpuflags="-mcpu=$cpu"
3578             case $cpu in
3579                 cortex-a*)                               subarch=armv7a  ;;
3580                 cortex-r*)                               subarch=armv7r  ;;
3581                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3582                 arm11*)                                  subarch=armv6   ;;
3583                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3584                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3585                 *)                             subarch=$(probe_arm_arch) ;;
3586             esac
3587         ;;
3588     esac
3589
3590     case "$subarch" in
3591         armv5t*)    enable fast_clz                ;;
3592         armv[6-8]*) enable fast_clz fast_unaligned ;;
3593     esac
3594
3595 elif enabled avr32; then
3596
3597     case $cpu in
3598         ap7[02]0[0-2])
3599             subarch="avr32_ap"
3600             cpuflags="-mpart=$cpu"
3601         ;;
3602         ap)
3603             subarch="avr32_ap"
3604             cpuflags="-march=$cpu"
3605         ;;
3606         uc3[ab]*)
3607             subarch="avr32_uc"
3608             cpuflags="-mcpu=$cpu"
3609         ;;
3610         uc)
3611             subarch="avr32_uc"
3612             cpuflags="-march=$cpu"
3613         ;;
3614     esac
3615
3616 elif enabled bfin; then
3617
3618     cpuflags="-mcpu=$cpu"
3619
3620 elif enabled mips; then
3621
3622     cpuflags="-march=$cpu"
3623
3624     case $cpu in
3625         24kc)
3626             disable mipsfpu
3627             disable mipsdspr1
3628             disable mipsdspr2
3629         ;;
3630         24kf*)
3631             disable mipsdspr1
3632             disable mipsdspr2
3633         ;;
3634         24kec|34kc|1004kc)
3635             disable mipsfpu
3636             disable mipsdspr2
3637         ;;
3638         24kef*|34kf*|1004kf*)
3639             disable mipsdspr2
3640         ;;
3641         74kc)
3642             disable mipsfpu
3643         ;;
3644     esac
3645
3646 elif enabled ppc; then
3647
3648     disable ldbrx
3649
3650     case $(tolower $cpu) in
3651         601|ppc601|powerpc601)
3652             cpuflags="-mcpu=601"
3653             disable altivec
3654         ;;
3655         603*|ppc603*|powerpc603*)
3656             cpuflags="-mcpu=603"
3657             disable altivec
3658         ;;
3659         604*|ppc604*|powerpc604*)
3660             cpuflags="-mcpu=604"
3661             disable altivec
3662         ;;
3663         g3|75*|ppc75*|powerpc75*)
3664             cpuflags="-mcpu=750"
3665             disable altivec
3666         ;;
3667         g4|745*|ppc745*|powerpc745*)
3668             cpuflags="-mcpu=7450"
3669         ;;
3670         74*|ppc74*|powerpc74*)
3671             cpuflags="-mcpu=7400"
3672         ;;
3673         g5|970|ppc970|powerpc970)
3674             cpuflags="-mcpu=970"
3675         ;;
3676         power[3-7]*)
3677             cpuflags="-mcpu=$cpu"
3678         ;;
3679         cell)
3680             cpuflags="-mcpu=cell"
3681             enable ldbrx
3682         ;;
3683         e500mc)
3684             cpuflags="-mcpu=e500mc"
3685             disable altivec
3686         ;;
3687         e500v2)
3688             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3689             disable altivec
3690             disable dcbzl
3691         ;;
3692         e500)
3693             cpuflags="-mcpu=8540 -mhard-float"
3694             disable altivec
3695             disable dcbzl
3696         ;;
3697     esac
3698
3699 elif enabled sparc; then
3700
3701     case $cpu in
3702         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3703             cpuflags="-mcpu=$cpu"
3704         ;;
3705         ultrasparc*|niagara[234])
3706             cpuflags="-mcpu=$cpu"
3707         ;;
3708     esac
3709
3710 elif enabled x86; then
3711
3712     case $cpu in
3713         i[345]86|pentium)
3714             cpuflags="-march=$cpu"
3715             disable mmx
3716         ;;
3717         # targets that do NOT support nopl and conditional mov (cmov)
3718         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3719             cpuflags="-march=$cpu"
3720             disable i686
3721         ;;
3722         # targets that do support nopl and conditional mov (cmov)
3723         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3724         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3725             cpuflags="-march=$cpu"
3726             enable i686
3727             enable fast_cmov
3728         ;;
3729         # targets that do support conditional mov but on which it's slow
3730         pentium4|pentium4m|prescott|nocona)
3731             cpuflags="-march=$cpu"
3732             enable i686
3733             disable fast_cmov
3734         ;;
3735     esac
3736
3737 fi
3738
3739 if [ "$cpu" != generic ]; then
3740     add_cflags  $cpuflags
3741     add_asflags $cpuflags
3742 fi
3743
3744 # compiler sanity check
3745 check_exec <<EOF
3746 int main(void){ return 0; }
3747 EOF
3748 if test "$?" != 0; then
3749     echo "$cc is unable to create an executable file."
3750     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3751         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3752         echo "Only do this if you know what cross compiling means."
3753     fi
3754     die "C compiler test failed."
3755 fi
3756
3757 add_cppflags -D_ISOC99_SOURCE
3758 add_cxxflags -D__STDC_CONSTANT_MACROS
3759 check_cflags -std=c99
3760 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3761 #include <stdlib.h>
3762 EOF
3763 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3764 #include <stdlib.h>
3765 EOF
3766
3767 add_host_cppflags -D_ISOC99_SOURCE
3768 check_host_cflags -std=c99
3769 check_host_cflags -Wall
3770 check_host_cflags -O3
3771
3772 check_64bit(){
3773     arch32=$1
3774     arch64=$2
3775     expr=$3
3776     check_code cc "" "int test[2*($expr) - 1]" &&
3777         subarch=$arch64 || subarch=$arch32
3778 }
3779
3780 case "$arch" in
3781     aarch64|alpha|ia64)
3782         spic=$shared
3783     ;;
3784     mips)
3785         check_64bit mips mips64 '_MIPS_SIM > 1'
3786         spic=$shared
3787     ;;
3788     parisc)
3789         check_64bit parisc parisc64 'sizeof(void *) > 4'
3790         spic=$shared
3791     ;;
3792     ppc)
3793         check_64bit ppc ppc64 'sizeof(void *) > 4'
3794         spic=$shared
3795     ;;
3796     s390)
3797         check_64bit s390 s390x 'sizeof(void *) > 4'
3798         spic=$shared
3799     ;;
3800     sparc)
3801         check_64bit sparc sparc64 'sizeof(void *) > 4'
3802         spic=$shared
3803     ;;
3804     x86)
3805         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3806         if test "$subarch" = "x86_64"; then
3807             spic=$shared
3808         fi
3809     ;;
3810     ppc)
3811         check_cc <<EOF && subarch="ppc64"
3812         int test[(int)sizeof(char*) - 7];
3813 EOF
3814     ;;
3815 esac
3816
3817 enable $subarch
3818 enabled spic && enable_weak pic
3819
3820 # OS specific
3821 case $target_os in
3822     aix)
3823         SHFLAGS=-shared
3824         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3825         enabled shared && add_ldflags -Wl,-brtl
3826         ;;
3827     haiku)
3828         prefix_default="/boot/common"
3829         network_extralibs="-lnetwork"
3830         host_libs=
3831         ;;
3832     sunos)
3833         SHFLAGS='-shared -Wl,-h,$$(@F)'
3834         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3835         network_extralibs="-lsocket -lnsl"
3836         # When using suncc to build, the Solaris linker will mark
3837         # an executable with each instruction set encountered by
3838         # the Solaris assembler.  As our libraries contain their own
3839         # guards for processor-specific code, instead suppress
3840         # generation of the HWCAPS ELF section on Solaris x86 only.
3841         enabled_all suncc x86 &&
3842             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3843             add_ldflags -Wl,-M,mapfile
3844         nm_default='nm -P -g'
3845         ;;
3846     netbsd)
3847         disable symver
3848         oss_indev_extralibs="-lossaudio"
3849         oss_outdev_extralibs="-lossaudio"
3850         enabled gcc || check_ldflags -Wl,-zmuldefs
3851         ;;
3852     openbsd|bitrig)
3853         disable symver
3854         SHFLAGS='-shared'
3855         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3856         SLIB_INSTALL_LINKS=
3857         oss_indev_extralibs="-lossaudio"
3858         oss_outdev_extralibs="-lossaudio"
3859         ;;
3860     dragonfly)
3861         disable symver
3862         ;;
3863     freebsd)
3864         ;;
3865     bsd/os)
3866         add_extralibs -lpoll -lgnugetopt
3867         strip="strip -d"
3868         ;;
3869     darwin)
3870         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3871         enabled ppc && add_asflags -force_cpusubtype_ALL
3872         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3873         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3874         strip="${strip} -x"
3875         add_ldflags -Wl,-dynamic,-search_paths_first
3876         SLIBSUF=".dylib"
3877         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3878         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3879         objformat="macho"
3880         enabled x86_64 && objformat="macho64"
3881         enabled_any pic shared ||
3882             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3883         ;;
3884     mingw32*)
3885         if test $target_os = "mingw32ce"; then
3886             disable network
3887         else
3888             target_os=mingw32
3889         fi
3890         LIBTARGET=i386
3891         if enabled x86_64; then
3892             LIBTARGET="i386:x86-64"
3893         elif enabled arm; then
3894             LIBTARGET=arm-wince
3895         fi
3896         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3897         check_ldflags -Wl,--nxcompat
3898         check_ldflags -Wl,--dynamicbase
3899         shlibdir_default="$bindir_default"
3900         SLIBPREF=""
3901         SLIBSUF=".dll"
3902         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3903         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3904         dlltool="${cross_prefix}dlltool"
3905         if check_cmd lib.exe -list; then
3906             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3907             if enabled x86_64; then
3908                 LIBTARGET=x64
3909             fi
3910         elif check_cmd $dlltool --version; then
3911             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3912         fi
3913         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3914         SLIB_INSTALL_LINKS=
3915         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3916         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3917         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3918         objformat="win32"
3919         ranlib=:
3920         enable dos_paths
3921         ;;
3922     win32|win64)
3923         disable symver
3924         if enabled shared; then
3925             # Link to the import library instead of the normal static library
3926             # for shared libs.
3927             LD_LIB='%.lib'
3928             # Cannot build both shared and static libs with MSVC or icl.
3929             disable static
3930         fi
3931         shlibdir_default="$bindir_default"
3932         SLIBPREF=""
3933         SLIBSUF=".dll"
3934         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3935         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3936         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3937         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3938         SLIB_INSTALL_LINKS=
3939         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3940         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3941         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3942         objformat="win32"
3943         ranlib=:
3944         enable dos_paths
3945         ;;
3946     cygwin*)
3947         target_os=cygwin
3948         shlibdir_default="$bindir_default"
3949         SLIBPREF="cyg"
3950         SLIBSUF=".dll"
3951         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3952         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3953         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3954         SLIB_INSTALL_LINKS=
3955         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3956         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3957         objformat="win32"
3958         enable dos_paths
3959         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3960         ;;
3961     *-dos|freedos|opendos)
3962         network_extralibs="-lsocket"
3963         objformat="coff"
3964         enable dos_paths
3965         add_cppflags -U__STRICT_ANSI__
3966         ;;
3967     linux)
3968         enable dv1394
3969         ;;
3970     irix*)
3971         target_os=irix
3972         ranlib="echo ignoring ranlib"
3973         ;;
3974     os/2*)
3975         strip="lxlite -CS"
3976         ln_s="cp -f"
3977         objformat="aout"
3978         add_cppflags -D_GNU_SOURCE
3979         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3980         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3981         LIBSUF="_s.a"
3982         SLIBPREF=""
3983         SLIBSUF=".dll"
3984         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3985         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3986         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3987             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3988             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3989             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3990             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3991             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3992         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3993             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3994         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3995         enable dos_paths
3996         enable_weak os2threads
3997         ;;
3998     gnu/kfreebsd)
3999         add_cppflags -D_BSD_SOURCE
4000         ;;
4001     gnu)
4002         ;;
4003     qnx)
4004         add_cppflags -D_QNX_SOURCE
4005         network_extralibs="-lsocket"
4006         ;;
4007     symbian)
4008         SLIBSUF=".dll"
4009         enable dos_paths
4010         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4011         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4012         add_ldflags -Wl,--target1-abs,--no-undefined \
4013                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4014                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4015         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4016                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4017                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4018         ;;
4019     osf1)
4020         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4021         ;;
4022     minix)
4023         ;;
4024     plan9)
4025         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4026                      -D_REENTRANT_SOURCE        \
4027                      -D_RESEARCH_SOURCE         \
4028                      -DFD_SETSIZE=96            \
4029                      -DHAVE_SOCK_OPTS
4030         add_compat strtod.o strtod=avpriv_strtod
4031         network_extralibs='-lbsd'
4032         exeobjs=compat/plan9/main.o
4033         disable ffserver
4034         cp_f='cp'
4035         ;;
4036     none)
4037         ;;
4038     *)
4039         die "Unknown OS '$target_os'."
4040         ;;
4041 esac
4042
4043 # determine libc flavour
4044
4045 probe_libc(){
4046     pfx=$1
4047     pfx_no_=${pfx%_}
4048     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4049     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4050         eval ${pfx}libc_type=uclibc
4051         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4052     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4053         eval ${pfx}libc_type=glibc
4054         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4055     # MinGW headers can be installed on Cygwin, so check for newlib first.
4056     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4057         eval ${pfx}libc_type=newlib
4058         add_${pfx}cppflags -U__STRICT_ANSI__
4059     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4060     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4061         eval ${pfx}libc_type=mingw64
4062         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4063             add_compat msvcrt/snprintf.o
4064             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4065         fi
4066         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4067         eval test \$${pfx_no_}cc_type = "gcc" &&
4068             add_${pfx}cppflags -D__printf__=__gnu_printf__
4069     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4070          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4071         eval ${pfx}libc_type=mingw32
4072         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4073             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4074             die "ERROR: MinGW32 runtime version must be >= 3.15."
4075         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4076         eval test \$${pfx_no_}cc_type = "gcc" &&
4077             add_${pfx}cppflags -D__printf__=__gnu_printf__
4078     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4079         eval ${pfx}libc_type=msvcrt
4080         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4081         # 0x601 by default unless something else is set by the user.
4082         # This can easily lead to us detecting functions only present
4083         # in such new versions and producing binaries requiring windows 7.0.
4084         # Therefore explicitly set the default to XP unless the user has
4085         # set something else on the command line.
4086         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4087             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4088     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4089         eval ${pfx}libc_type=klibc
4090     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4091         eval ${pfx}libc_type=bionic
4092     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4093         eval ${pfx}libc_type=solaris
4094         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4095     fi
4096 }
4097
4098 probe_libc
4099 test -n "$libc_type" && enable libc_$libc_type
4100 probe_libc host_
4101 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4102
4103 case $libc_type in
4104     bionic)
4105         add_compat strtod.o strtod=avpriv_strtod
4106         ;;
4107     msvcrt)
4108         add_compat strtod.o strtod=avpriv_strtod
4109         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4110                                      _snprintf=avpriv_snprintf  \
4111                                      vsnprintf=avpriv_vsnprintf
4112         ;;
4113 esac
4114
4115 # hacks for compiler/libc/os combinations
4116
4117 if enabled_all tms470 libc_glibc; then
4118     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4119     add_cppflags -D__USER_LABEL_PREFIX__=
4120     add_cppflags -D__builtin_memset=memset
4121     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4122     add_cflags   -pds=48    # incompatible redefinition of macro
4123 fi
4124
4125 if enabled_all ccc libc_glibc; then
4126     add_ldflags -Wl,-z,now  # calls to libots crash without this
4127 fi
4128
4129 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4130     add_cppflags '-I\$(SRC_PATH)/compat/float'
4131
4132 esc(){
4133     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4134 }
4135
4136 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4137
4138 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4139
4140 set_default $PATHS_LIST
4141 set_default nm
4142
4143 # we need to build at least one lib type
4144 if ! enabled_any static shared; then
4145     cat <<EOF
4146 At least one library type must be built.
4147 Specify --enable-static to build the static libraries or --enable-shared to
4148 build the shared libraries as well. To only build the shared libraries specify
4149 --disable-static in addition to --enable-shared.
4150 EOF
4151     exit 1;
4152 fi
4153
4154 die_license_disabled() {
4155     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4156 }
4157
4158 die_license_disabled_gpl() {
4159     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4160 }
4161
4162 die_license_disabled gpl frei0r
4163 die_license_disabled gpl libcdio
4164 die_license_disabled gpl libutvideo
4165 die_license_disabled gpl libvidstab
4166 die_license_disabled gpl libx264
4167 die_license_disabled gpl libx265
4168 die_license_disabled gpl libxavs
4169 die_license_disabled gpl libxvid
4170 die_license_disabled gpl libzvbi
4171 die_license_disabled gpl x11grab
4172
4173 die_license_disabled nonfree libaacplus
4174 die_license_disabled nonfree libfaac
4175 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4176 enabled gpl && die_license_disabled_gpl nonfree openssl
4177
4178 die_license_disabled version3 libopencore_amrnb
4179 die_license_disabled version3 libopencore_amrwb
4180 die_license_disabled version3 libvo_aacenc
4181 die_license_disabled version3 libvo_amrwbenc
4182
4183 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4184
4185 disabled optimizations || check_cflags -fomit-frame-pointer
4186
4187 enable_weak_pic() {
4188     disabled pic && return
4189     enable pic
4190     add_cppflags -DPIC
4191     case "$target_os" in
4192     mingw*|cygwin*)
4193         ;;
4194     *)
4195         add_cflags -fPIC
4196         ;;
4197     esac
4198     add_asflags  -fPIC
4199 }
4200
4201 enabled pic && enable_weak_pic
4202
4203 check_cc <<EOF || die "Symbol mangling check failed."
4204 int ff_extern;
4205 EOF
4206 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4207 extern_prefix=${sym%%ff_extern*}
4208
4209 check_cc <<EOF && enable_weak inline_asm
4210 void foo(void) { __asm__ volatile ("" ::); }
4211 EOF
4212
4213 _restrict=
4214 for restrict_keyword in restrict __restrict__ __restrict; do
4215     check_cc <<EOF && _restrict=$restrict_keyword && break
4216 void foo(char * $restrict_keyword p);
4217 EOF
4218 done
4219
4220 check_cc <<EOF && enable pragma_deprecated
4221 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4222 EOF
4223
4224 check_cc <<EOF && enable attribute_packed
4225 struct { int x; } __attribute__((packed)) x;
4226 EOF
4227
4228 check_cc <<EOF && enable attribute_may_alias
4229 union { int x; } __attribute__((may_alias)) x;
4230 EOF
4231
4232 check_cc <<EOF || die "endian test failed"
4233 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4234 EOF
4235 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4236
4237 check_inline_asm inline_asm_labels '"1:\n"'
4238
4239 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4240
4241 if enabled aarch64; then
4242     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4243     # internal assembler in clang 3.3 does not support this instruction
4244     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4245     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4246
4247     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4248
4249 elif enabled alpha; then
4250
4251     check_cflags -mieee
4252
4253 elif enabled arm; then
4254
4255     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4256 float func(float a, float b){ return a+b; }
4257 EOF
4258
4259     enabled thumb && check_cflags -mthumb || check_cflags -marm
4260     nogas=die
4261
4262     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4263         enable vfp_args
4264     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4265         case "${cross_prefix:-$cc}" in
4266             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4267             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4268 __asm__ (".eabi_attribute 28, 1");
4269 int main(void) { return 0; }
4270 EOF
4271         esac
4272         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4273     fi
4274
4275     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4276     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4277     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4278     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4279     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4280     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4281
4282     [ $target_os = linux ] ||
4283         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4284             $ARCH_EXT_LIST_ARM
4285
4286     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4287
4288     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4289
4290 elif enabled mips; then
4291
4292     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4293     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4294      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4295     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4296      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4297     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4298      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4299     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4300      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4301
4302 elif enabled parisc; then
4303
4304     if enabled gcc; then
4305         case $($cc -dumpversion) in
4306             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4307         esac
4308     fi
4309
4310 elif enabled ppc; then
4311
4312     enable local_aligned_8 local_aligned_16 local_aligned_32
4313
4314     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4315     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4316     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4317     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4318
4319     # AltiVec flags: The FSF version of GCC differs from the Apple version
4320     if enabled altivec; then
4321         if ! enabled_any pic ppc64; then
4322             nogas=warn
4323         fi
4324         check_cflags -maltivec -mabi=altivec &&
4325         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4326         check_cflags -faltivec
4327
4328         # check if our compiler supports Motorola AltiVec C API
4329         check_cc <<EOF || disable altivec
4330 $inc_altivec_h
4331 int main(void) {
4332     vector signed int v1 = (vector signed int) { 0 };
4333     vector signed int v2 = (vector signed int) { 1 };
4334     v1 = vec_add(v1, v2);
4335     return 0;
4336 }
4337 EOF
4338
4339         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4340     fi
4341
4342 elif enabled x86; then
4343
4344     check_builtin rdtsc    intrin.h   "__rdtsc()"
4345     check_builtin mm_empty mmintrin.h "_mm_empty()"
4346
4347     enable local_aligned_8 local_aligned_16 local_aligned_32
4348
4349     # check whether EBP is available on x86
4350     # As 'i' is stored on the stack, this program will crash
4351     # if the base pointer is used to access it because the
4352     # base pointer is cleared in the inline assembly code.
4353     check_exec_crash <<EOF && enable ebp_available
4354 volatile int i=0;
4355 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4356 return i;
4357 EOF
4358
4359     # check whether EBX is available on x86
4360     check_inline_asm ebx_available '""::"b"(0)' &&
4361         check_inline_asm ebx_available '"":::"%ebx"'
4362
4363     # check whether xmm clobbers are supported
4364     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4365
4366     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4367         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4368
4369     # check whether binutils is new enough to compile SSSE3/MMXEXT
4370     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4371     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4372
4373     if ! disabled_any asm mmx yasm; then
4374         if check_cmd $yasmexe --version; then
4375             enabled x86_64 && yasm_extra="-m amd64"
4376             yasm_debug="-g dwarf2"
4377         elif check_cmd nasm -v; then
4378             yasmexe=nasm
4379             yasm_debug="-g -F dwarf"
4380             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4381         fi
4382
4383         YASMFLAGS="-f $objformat $yasm_extra"
4384         enabled pic               && append YASMFLAGS "-DPIC"
4385         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4386         case "$objformat" in
4387             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4388         esac
4389
4390         check_yasm "movbe ecx, [5]" && enable yasm ||
4391             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4392         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4393         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4394         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4395         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4396         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4397         check_yasm "CPU amdnop" || disable cpunop
4398     fi
4399
4400     case "$cpu" in
4401         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4402             disable fast_clz
4403         ;;
4404     esac
4405
4406 fi
4407
4408 if enabled asm; then
4409     as=${gas:=$as}
4410     check_as <<EOF && enable gnu_as || \
4411         $nogas "GNU assembler not found, install gas-preprocessor"
4412 .macro m n
4413 \n: .int 0
4414 .endm
4415 m x
4416 EOF
4417 fi
4418
4419 check_ldflags -Wl,--as-needed
4420
4421 if check_func dlopen; then
4422     ldl=
4423 elif check_func dlopen -ldl; then
4424     ldl=-ldl
4425 fi
4426
4427 if ! disabled network; then
4428     check_func getaddrinfo $network_extralibs
4429     check_func getservbyport $network_extralibs
4430     check_func inet_aton $network_extralibs
4431
4432     check_type netdb.h "struct addrinfo"
4433     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4434     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4435     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4436     check_type poll.h "struct pollfd"
4437     check_type netinet/sctp.h "struct sctp_event_subscribe"
4438     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4439     check_type netinet/in.h "struct sockaddr_in6"
4440     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4441     check_type "sys/types.h sys/socket.h" socklen_t
4442
4443     # Prefer arpa/inet.h over winsock2
4444     if check_header arpa/inet.h ; then
4445         check_func closesocket
4446     elif check_header winsock2.h ; then
4447         check_func_headers winsock2.h closesocket -lws2 &&
4448             network_extralibs="-lws2" ||
4449         { check_func_headers winsock2.h closesocket -lws2_32 &&
4450             network_extralibs="-lws2_32"; } || disable winsock2_h network
4451         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4452
4453         check_type ws2tcpip.h socklen_t
4454         check_type ws2tcpip.h "struct addrinfo"
4455         check_type ws2tcpip.h "struct group_source_req"
4456         check_type ws2tcpip.h "struct ip_mreq_source"
4457         check_type ws2tcpip.h "struct ipv6_mreq"
4458         check_type winsock2.h "struct pollfd"
4459         check_struct winsock2.h "struct sockaddr" sa_len
4460         check_type ws2tcpip.h "struct sockaddr_in6"
4461         check_type ws2tcpip.h "struct sockaddr_storage"
4462     else
4463         disable network
4464     fi
4465 fi
4466
4467 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4468 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4469 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4470 check_builtin sarestart signal.h "SA_RESTART"
4471 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4472
4473 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4474 check_func  ${malloc_prefix}memalign            && enable memalign
4475 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4476
4477 check_func  access
4478 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4479 check_func  fcntl
4480 check_func  fork
4481 check_func  gethrtime
4482 check_func  getopt
4483 check_func  getrusage
4484 check_func  gettimeofday
4485 check_func  isatty
4486 check_func  localtime_r
4487 check_func  mach_absolute_time
4488 check_func  mkstemp
4489 check_func  mmap
4490 check_func  mprotect
4491 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4492 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4493 check_func  sched_getaffinity
4494 check_func  setrlimit
4495 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4496 check_func  strerror_r
4497 check_func  sysconf
4498 check_func  sysctl
4499 check_func  usleep
4500
4501 check_func_headers conio.h kbhit
4502 check_func_headers io.h setmode
4503 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4504 check_func_headers stdlib.h getenv
4505
4506 check_func_headers windows.h CoTaskMemFree -lole32
4507 check_func_headers windows.h GetProcessAffinityMask
4508 check_func_headers windows.h GetProcessTimes
4509 check_func_headers windows.h GetSystemTimeAsFileTime
4510 check_func_headers windows.h MapViewOfFile
4511 check_func_headers windows.h PeekNamedPipe
4512 check_func_headers windows.h SetConsoleTextAttribute
4513 check_func_headers windows.h Sleep
4514 check_func_headers windows.h VirtualAlloc
4515 check_func_headers glob.h glob
4516 enabled xlib &&
4517     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4518
4519 check_header cl/cl.h
4520 check_header direct.h
4521 check_header dlfcn.h
4522 check_header dxva.h
4523 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4524 check_header io.h
4525 check_header libcrystalhd/libcrystalhd_if.h
4526 check_header mach/mach_time.h
4527 check_header malloc.h
4528 check_header poll.h
4529 check_header sys/mman.h
4530 check_header sys/param.h
4531 check_header sys/resource.h
4532 check_header sys/select.h
4533 check_header sys/time.h
4534 check_header sys/un.h
4535 check_header termios.h
4536 check_header unistd.h
4537 check_header vdpau/vdpau.h
4538 check_header vdpau/vdpau_x11.h
4539 check_header VideoDecodeAcceleration/VDADecoder.h
4540 check_header windows.h
4541 check_header X11/extensions/XvMClib.h
4542 check_header asm/types.h
4543
4544 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4545 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4546 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4547
4548 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4549
4550 if ! disabled w32threads && ! enabled pthreads; then
4551     check_func_headers "windows.h process.h" _beginthreadex &&
4552         enable w32threads || disable w32threads
4553 fi
4554
4555 # check for some common methods of building with pthread support
4556 # do this before the optional library checks as some of them require pthreads
4557 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4558     enable pthreads
4559     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4560         add_cflags -pthread
4561         add_extralibs -pthread
4562     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4563         add_cflags -pthreads
4564         add_extralibs -pthreads
4565     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4566         add_extralibs -lpthreadGC2
4567     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4568         :
4569     elif ! check_func pthread_join && ! check_func pthread_create; then
4570         disable pthreads
4571     fi
4572     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4573 fi
4574
4575
4576 if enabled pthreads; then
4577   check_func pthread_cancel
4578 fi
4579
4580 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4581 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4582
4583 check_lib math.h sin -lm && LIBM="-lm"
4584 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4585
4586 atan2f_args=2
4587 ldexpf_args=2
4588 powf_args=2
4589
4590 for func in $MATH_FUNCS; do
4591     eval check_mathfunc $func \${${func}_args:-1}
4592 done
4593
4594 # these are off by default, so fail if requested and not available
4595 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4596 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4597                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4598                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4599 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4600 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4601 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4602 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4603 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4604 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4605 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4606 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4607 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4608                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4609                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4610 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4611 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4612 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4613 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"
4614 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4615 enabled fontconfig        && enable libfontconfig
4616 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4617 enabled libfreetype       && require_libfreetype
4618 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4619 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4620                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4621                                done || die "ERROR: libgsm not found"; }
4622 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4623 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4624 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4625 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4626 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4627 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4628 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4629 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4630                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4631                                die "ERROR: libopenjpeg not found"; }
4632 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4633 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4634 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4635 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4636 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4637 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4638 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4639 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4640 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4641 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4642     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4643     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4644 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4645 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4646                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4647                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4648 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4649 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4650 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4651 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4652 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4653 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4654 enabled libvpx            && {
4655     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4656                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4657     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
4658                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4659     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4660     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_SVC" -lvpx || disable libvpx_vp9_encoder; } }
4661 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4662 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4663 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4664                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4665                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4666 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4667                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4668                                die "ERROR: libx265 version must be >= 13."; }
4669 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4670 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4671 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4672 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4673 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4674                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4675                                die "ERROR: openal not found"; } &&
4676                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4677                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4678 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4679                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4680                                die "ERROR: opencl not found"; } &&
4681                              { ! enabled_any w32threads os2threads ||
4682                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4683                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4684                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4685                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4686 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4687                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4688                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4689                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4690                                die "ERROR: opengl not found."
4691                              }
4692 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4693                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4694                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4695                                die "ERROR: openssl not found"; }
4696 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4697
4698 if enabled gnutls; then
4699     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4700     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4701 fi
4702
4703 # libdc1394 check
4704 if enabled libdc1394; then
4705     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4706         enable libdc1394_2; } ||
4707     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4708         enable libdc1394_1; } ||
4709     die "ERROR: No version of libdc1394 found "
4710 fi
4711
4712 SDL_CONFIG="${cross_prefix}sdl-config"
4713 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4714     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4715     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4716     enable sdl
4717 else
4718   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4719     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4720     sdl_libs=$("${SDL_CONFIG}" --libs)
4721     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4722     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4723     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4724     enable sdl
4725   fi
4726 fi
4727 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4728
4729 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4730 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4731 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4732 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4733 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4734
4735 check_header linux/fb.h
4736 check_header linux/videodev.h
4737 check_header linux/videodev2.h
4738 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4739
4740 check_header sys/videoio.h
4741
4742 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4743 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4744 # w32api 3.12 had it defined wrong
4745 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4746
4747 check_type "dshow.h" IBaseFilter
4748
4749 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4750 { check_header dev/bktr/ioctl_meteor.h &&
4751   check_header dev/bktr/ioctl_bt848.h; } ||
4752 { check_header machine/ioctl_meteor.h &&
4753   check_header machine/ioctl_bt848.h; } ||
4754 { check_header dev/video/meteor/ioctl_meteor.h &&
4755   check_header dev/video/bktr/ioctl_bt848.h; } ||
4756 check_header dev/ic/bt8xx.h
4757
4758 check_header sndio.h
4759 if check_struct sys/soundcard.h audio_buf_info bytes; then
4760     enable_safe sys/soundcard.h
4761 else
4762     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4763     #include <sys/soundcard.h>
4764     audio_buf_info abc;
4765 EOF
4766 fi
4767 check_header soundcard.h
4768
4769 enabled_any alsa_indev alsa_outdev &&
4770     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4771
4772 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4773     check_func jack_port_get_latency_range -ljack
4774
4775 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4776
4777 if enabled libcdio; then
4778     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4779     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4780     die "ERROR: libcdio-paranoia not found"
4781 fi
4782
4783 enabled xlib &&
4784     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
4785
4786 enabled x11grab                                           &&
4787 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4788 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4789 { enabled xlib || die "ERROR: Xlib not found"; }
4790
4791 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
4792
4793 enabled vaapi &&
4794     check_lib va/va.h vaInitialize -lva ||
4795     disable vaapi
4796
4797 enabled vdpau &&
4798     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4799     disable vdpau
4800
4801 enabled vdpau && enabled xlib &&
4802     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4803     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
4804     enable vdpau_x11
4805
4806 # Funny iconv installations are not unusual, so check it after all flags have been set
4807 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4808
4809 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4810
4811 # add some useful compiler flags if supported
4812 check_cflags -Wdeclaration-after-statement
4813 check_cflags -Wall
4814 check_cflags -Wdisabled-optimization
4815 check_cflags -Wpointer-arith
4816 check_cflags -Wredundant-decls
4817 check_cflags -Wwrite-strings
4818 check_cflags -Wtype-limits
4819 check_cflags -Wundef
4820 check_cflags -Wmissing-prototypes
4821 check_cflags -Wno-pointer-to-int-cast
4822 check_cflags -Wstrict-prototypes
4823 check_cflags -Wempty-body
4824 enabled extra_warnings && check_cflags -Winline
4825
4826 check_disable_warning(){
4827     warning_flag=-W${1#-Wno-}
4828     test_cflags $warning_flag && add_cflags $1
4829 }
4830
4831 check_disable_warning -Wno-parentheses
4832 check_disable_warning -Wno-switch
4833 check_disable_warning -Wno-format-zero-length
4834 check_disable_warning -Wno-pointer-sign
4835
4836 # add some linker flags
4837 check_ldflags -Wl,--warn-common
4838 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4839 enabled rpath && add_ldflags -Wl,-rpath,$libdir
4840 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4841
4842 # add some strip flags
4843 # -wN '..@*' is more selective than -x, but not available everywhere.
4844 check_stripflags -wN \'..@*\' || check_stripflags -x
4845
4846 enabled neon_clobber_test &&
4847     check_ldflags -Wl,--wrap,avcodec_open2              \
4848                   -Wl,--wrap,avcodec_decode_audio4      \
4849                   -Wl,--wrap,avcodec_decode_video2      \
4850                   -Wl,--wrap,avcodec_decode_subtitle2   \
4851                   -Wl,--wrap,avcodec_encode_audio2      \
4852                   -Wl,--wrap,avcodec_encode_video2      \
4853                   -Wl,--wrap,avcodec_encode_subtitle    \
4854                   -Wl,--wrap,swr_convert                \
4855                   -Wl,--wrap,avresample_convert ||
4856     disable neon_clobber_test
4857
4858 enabled xmm_clobber_test &&
4859     check_ldflags -Wl,--wrap,avcodec_open2              \
4860                   -Wl,--wrap,avcodec_decode_audio4      \
4861                   -Wl,--wrap,avcodec_decode_video2      \
4862                   -Wl,--wrap,avcodec_decode_subtitle2   \
4863                   -Wl,--wrap,avcodec_encode_audio2      \
4864                   -Wl,--wrap,avcodec_encode_video       \
4865                   -Wl,--wrap,avcodec_encode_video2      \
4866                   -Wl,--wrap,avcodec_encode_subtitle    \
4867                   -Wl,--wrap,swr_convert                \
4868                   -Wl,--wrap,avresample_convert         \
4869                   -Wl,--wrap,sws_scale ||
4870     disable xmm_clobber_test
4871
4872 echo "X{};" > $TMPV
4873 if test_ldflags -Wl,--version-script,$TMPV; then
4874     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4875     check_cc <<EOF && enable symver_asm_label
4876 void ff_foo(void) __asm__ ("av_foo@VERSION");
4877 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4878 EOF
4879     check_cc <<EOF && enable symver_gnu_asm
4880 __asm__(".symver ff_foo,av_foo@VERSION");
4881 void ff_foo(void) {}
4882 EOF
4883 fi
4884
4885 if [ -z "$optflags" ]; then
4886     if enabled small; then
4887         optflags=$cflags_size
4888     elif enabled optimizations; then
4889         optflags=$cflags_speed
4890     else
4891         optflags=$cflags_noopt
4892     fi
4893 fi
4894
4895 check_optflags(){
4896     check_cflags "$@"
4897     enabled lto && check_ldflags "$@"
4898 }
4899
4900
4901 if enabled lto; then
4902     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4903     check_cflags  -flto
4904     check_ldflags -flto $cpuflags
4905 fi
4906
4907 check_optflags $optflags
4908 check_optflags -fno-math-errno
4909 check_optflags -fno-signed-zeros
4910
4911 enabled ftrapv && check_cflags -ftrapv
4912
4913 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4914 int x;
4915 EOF
4916
4917
4918 if enabled icc; then
4919     # Just warnings, no remarks
4920     check_cflags -w1
4921     # -wd: Disable following warnings
4922     # 144, 167, 556: -Wno-pointer-sign
4923     # 188: enumerated type mixed with another type
4924     # 1292: attribute "foo" ignored
4925     # 1419: external declaration in primary source file
4926     # 10006: ignoring unknown option -fno-signed-zeros
4927     # 10148: ignoring unknown option -Wno-parentheses
4928     # 10156: ignoring option '-W'; no argument required
4929     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4930     # 11030: Warning unknown option --as-needed
4931     # 10156: ignoring option '-export'; no argument required
4932     check_ldflags -wd10156,11030
4933     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4934     enable ebp_available
4935     if enabled x86_32; then
4936         icc_version=$($cc -dumpversion)
4937         test ${icc_version%%.*} -ge 11 &&
4938             check_cflags -falign-stack=maintain-16-byte ||
4939             disable aligned_stack
4940     fi
4941 elif enabled ccc; then
4942     # disable some annoying warnings
4943     add_cflags -msg_disable bitnotint
4944     add_cflags -msg_disable mixfuncvoid
4945     add_cflags -msg_disable nonstandcast
4946     add_cflags -msg_disable unsupieee
4947 elif enabled gcc; then
4948     check_optflags -fno-tree-vectorize
4949     check_cflags -Werror=implicit-function-declaration
4950     check_cflags -Werror=missing-prototypes
4951     check_cflags -Werror=return-type
4952     check_cflags -Werror=vla
4953     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4954 elif enabled llvm_gcc; then
4955     check_cflags -mllvm -stack-alignment=16
4956 elif enabled clang; then
4957     check_cflags -mllvm -stack-alignment=16
4958     check_cflags -Qunused-arguments
4959     check_cflags -Werror=implicit-function-declaration
4960     check_cflags -Werror=missing-prototypes
4961     check_cflags -Werror=return-type
4962 elif enabled cparser; then
4963     add_cflags -Wno-missing-variable-declarations
4964     add_cflags -Wno-empty-statement
4965 elif enabled armcc; then
4966     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4967     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4968     # 2523: use of inline assembler is deprecated
4969     add_cflags -W${armcc_opt},--diag_suppress=2523
4970     add_cflags -W${armcc_opt},--diag_suppress=1207
4971     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4972     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4973     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4974     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4975 elif enabled tms470; then
4976     add_cflags -pds=824 -pds=837
4977     disable inline_asm
4978 elif enabled pathscale; then
4979     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4980 elif enabled_any msvc icl; then
4981     enabled x86_32 && disable aligned_stack
4982     enabled_all x86_32 debug && add_cflags -Oy-
4983     enabled debug && add_ldflags -debug
4984     enable pragma_deprecated
4985     if enabled icl; then
4986         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4987         # (correctly) on icl 13.x.
4988         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4989             add_cflags -Qansi-alias
4990         # icl will pass the inline asm tests but inline asm is currently
4991         # not supported (build will fail)
4992         disabled inline_asm || warn "inline asm disabled due to issues with it in ICL"
4993         disable inline_asm
4994     fi
4995 fi
4996
4997 case $as_type in
4998     clang)
4999         add_asflags -Qunused-arguments
5000     ;;
5001 esac
5002
5003 case $ld_type in
5004     clang)
5005         check_ldflags -Qunused-arguments
5006     ;;
5007 esac
5008
5009 case $target_os in
5010     osf1)
5011         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5012     ;;
5013     plan9)
5014         add_cppflags -Dmain=plan9_main
5015     ;;
5016 esac
5017
5018 enable frame_thread_encoder
5019
5020 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5021
5022 check_deps $CONFIG_LIST       \
5023            $CONFIG_EXTRA      \
5024            $HAVE_LIST         \
5025            $ALL_COMPONENTS    \
5026
5027 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"
5028
5029
5030 if test $target_os = "haiku"; then
5031     disable memalign
5032     disable posix_memalign
5033 fi
5034
5035 enabled_all dxva2 CoTaskMemFree &&
5036     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
5037     enable dxva2_lib
5038
5039 ! enabled_any memalign posix_memalign aligned_malloc &&
5040     enabled_any $need_memalign && enable memalign_hack
5041
5042 # add_dep lib dep
5043 # -> enable ${lib}_deps_${dep}
5044 # -> add $dep to ${lib}_deps only once
5045 add_dep() {
5046     lib=$1
5047     dep=$2
5048     enabled "${lib}_deps_${dep}" && return 0
5049     enable  "${lib}_deps_${dep}"
5050     prepend "${lib}_deps" $dep
5051 }
5052
5053 # merge deps lib components
5054 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5055 merge_deps() {
5056     lib=$1
5057     shift
5058     for comp in $*; do
5059         enabled $comp || continue
5060         eval "dep=\"\$${comp}_deps\""
5061         for d in $dep; do
5062             add_dep $lib $d
5063         done
5064     done
5065 }
5066
5067 merge_deps libavfilter $FILTER_LIST
5068
5069 for thread in $THREADS_LIST; do
5070     if enabled $thread; then
5071         test -n "$thread_type" &&
5072             die "ERROR: Only one thread type must be selected." ||
5073             thread_type="$thread"
5074     fi
5075 done
5076
5077 echo "install prefix            $prefix"
5078 echo "source path               $source_path"
5079 echo "C compiler                $cc"
5080 echo "C library                 $libc_type"
5081 if test "$host_cc" != "$cc"; then
5082     echo "host C compiler           $host_cc"
5083     echo "host C library            $host_libc_type"
5084 fi
5085 echo "ARCH                      $arch ($cpu)"
5086 if test "$build_suffix" != ""; then
5087     echo "build suffix              $build_suffix"
5088 fi
5089 if test "$progs_suffix" != ""; then
5090     echo "progs suffix              $progs_suffix"
5091 fi
5092 if test "$extra_version" != ""; then
5093     echo "version string suffix     $extra_version"
5094 fi
5095 echo "big-endian                ${bigendian-no}"
5096 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5097 if enabled x86; then
5098     echo "${yasmexe}                      ${yasm-no}"
5099     echo "MMX enabled               ${mmx-no}"
5100     echo "MMXEXT enabled            ${mmxext-no}"
5101     echo "3DNow! enabled            ${amd3dnow-no}"
5102     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5103     echo "SSE enabled               ${sse-no}"
5104     echo "SSSE3 enabled             ${ssse3-no}"
5105     echo "AVX enabled               ${avx-no}"
5106     echo "XOP enabled               ${xop-no}"
5107     echo "FMA3 enabled              ${fma3-no}"
5108     echo "FMA4 enabled              ${fma4-no}"
5109     echo "i686 features enabled     ${i686-no}"
5110     echo "CMOV is fast              ${fast_cmov-no}"
5111     echo "EBX available             ${ebx_available-no}"
5112     echo "EBP available             ${ebp_available-no}"
5113 fi
5114 if enabled aarch64; then
5115     echo "NEON enabled              ${neon-no}"
5116     echo "VFP enabled               ${vfp-no}"
5117 fi
5118 if enabled arm; then
5119     echo "ARMv5TE enabled           ${armv5te-no}"
5120     echo "ARMv6 enabled             ${armv6-no}"
5121     echo "ARMv6T2 enabled           ${armv6t2-no}"
5122     echo "VFP enabled               ${vfp-no}"
5123     echo "NEON enabled              ${neon-no}"
5124     echo "THUMB enabled             ${thumb-no}"
5125 fi
5126 if enabled mips; then
5127     echo "MIPS FPU enabled          ${mipsfpu-no}"
5128     echo "MIPS32R2 enabled          ${mips32r2-no}"
5129     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5130     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5131 fi
5132 if enabled ppc; then
5133     echo "AltiVec enabled           ${altivec-no}"
5134     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5135     echo "dcbzl available           ${dcbzl-no}"
5136 fi
5137 echo "debug symbols             ${debug-no}"
5138 echo "strip symbols             ${stripping-no}"
5139 echo "optimize for size         ${small-no}"
5140 echo "optimizations             ${optimizations-no}"
5141 echo "static                    ${static-no}"
5142 echo "shared                    ${shared-no}"
5143 echo "postprocessing support    ${postproc-no}"
5144 echo "new filter support        ${avfilter-no}"
5145 echo "network support           ${network-no}"
5146 echo "threading support         ${thread_type-no}"
5147 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5148 echo "SDL support               ${sdl-no}"
5149 echo "opencl enabled            ${opencl-no}"
5150 echo "libzvbi enabled           ${libzvbi-no}"
5151 echo "texi2html enabled         ${texi2html-no}"
5152 echo "perl enabled              ${perl-no}"
5153 echo "pod2man enabled           ${pod2man-no}"
5154 echo "makeinfo enabled          ${makeinfo-no}"
5155 test -n "$random_seed" &&
5156     echo "random seed               ${random_seed}"
5157 echo
5158
5159 echo "External libraries:"
5160 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5161 echo
5162
5163 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5164     echo "Enabled ${type}s:"
5165     eval list=\$$(toupper $type)_LIST
5166     print_enabled '_*' $list | print_3_columns
5167     echo
5168 done
5169
5170 license="LGPL version 2.1 or later"
5171 if enabled nonfree; then
5172     license="nonfree and unredistributable"
5173 elif enabled gplv3; then
5174     license="GPL version 3 or later"
5175 elif enabled lgplv3; then
5176     license="LGPL version 3 or later"
5177 elif enabled gpl; then
5178     license="GPL version 2 or later"
5179 fi
5180
5181 echo "License: $license"
5182
5183 echo "Creating config.mak, config.h, and doc/config.texi..."
5184
5185 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5186
5187 enabled stripping || strip="echo skipping strip"
5188
5189 config_files="$TMPH config.mak doc/config.texi"
5190
5191 cat > config.mak <<EOF
5192 # Automatically generated by configure - do not modify!
5193 ifndef FFMPEG_CONFIG_MAK
5194 FFMPEG_CONFIG_MAK=1
5195 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5196 prefix=$prefix
5197 LIBDIR=\$(DESTDIR)$libdir
5198 SHLIBDIR=\$(DESTDIR)$shlibdir
5199 INCDIR=\$(DESTDIR)$incdir
5200 BINDIR=\$(DESTDIR)$bindir
5201 DATADIR=\$(DESTDIR)$datadir
5202 DOCDIR=\$(DESTDIR)$docdir
5203 MANDIR=\$(DESTDIR)$mandir
5204 SRC_PATH=$source_path
5205 ifndef MAIN_MAKEFILE
5206 SRC_PATH:=\$(SRC_PATH:.%=..%)
5207 endif
5208 CC_IDENT=$cc_ident
5209 ARCH=$arch
5210 CC=$cc
5211 CXX=$cxx
5212 AS=$as
5213 LD=$ld
5214 DEPCC=$dep_cc
5215 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5216 DEPAS=$as
5217 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5218 YASM=$yasmexe
5219 DEPYASM=$yasmexe
5220 AR=$ar
5221 ARFLAGS=$arflags
5222 AR_O=$ar_o
5223 RANLIB=$ranlib
5224 STRIP=$strip
5225 CP=cp -p
5226 LN_S=$ln_s
5227 CPPFLAGS=$CPPFLAGS
5228 CFLAGS=$CFLAGS
5229 CXXFLAGS=$CXXFLAGS
5230 ASFLAGS=$ASFLAGS
5231 AS_C=$AS_C
5232 AS_O=$AS_O
5233 CC_C=$CC_C
5234 CC_E=$CC_E
5235 CC_O=$CC_O
5236 CXX_C=$CXX_C
5237 CXX_O=$CXX_O
5238 LD_O=$LD_O
5239 LD_LIB=$LD_LIB
5240 LD_PATH=$LD_PATH
5241 DLLTOOL=$dlltool
5242 WINDRES=$windres
5243 DEPWINDRES=$dep_cc
5244 LDFLAGS=$LDFLAGS
5245 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5246 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5247 YASMFLAGS=$YASMFLAGS
5248 BUILDSUF=$build_suffix
5249 PROGSSUF=$progs_suffix
5250 FULLNAME=$FULLNAME
5251 LIBPREF=$LIBPREF
5252 LIBSUF=$LIBSUF
5253 LIBNAME=$LIBNAME
5254 SLIBPREF=$SLIBPREF
5255 SLIBSUF=$SLIBSUF
5256 EXESUF=$EXESUF
5257 EXTRA_VERSION=$extra_version
5258 CCDEP=$CCDEP
5259 CXXDEP=$CXXDEP
5260 CCDEP_FLAGS=$CCDEP_FLAGS
5261 ASDEP=$ASDEP
5262 ASDEP_FLAGS=$ASDEP_FLAGS
5263 CC_DEPFLAGS=$CC_DEPFLAGS
5264 AS_DEPFLAGS=$AS_DEPFLAGS
5265 HOSTCC=$host_cc
5266 HOSTLD=$host_ld
5267 HOSTCFLAGS=$host_cflags
5268 HOSTCPPFLAGS=$host_cppflags
5269 HOSTEXESUF=$HOSTEXESUF
5270 HOSTLDFLAGS=$host_ldflags
5271 HOSTLIBS=$host_libs
5272 DEPHOSTCC=$host_cc
5273 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5274 HOSTCCDEP=$HOSTCCDEP
5275 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5276 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5277 HOSTCC_C=$HOSTCC_C
5278 HOSTCC_O=$HOSTCC_O
5279 HOSTLD_O=$HOSTLD_O
5280 TARGET_EXEC=$target_exec $target_exec_args
5281 TARGET_PATH=$target_path
5282 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5283 CFLAGS-ffplay=$sdl_cflags
5284 ZLIB=$($ldflags_filter -lz)
5285 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5286 EXTRALIBS=$extralibs
5287 COMPAT_OBJS=$compat_objs
5288 EXEOBJS=$exeobjs
5289 INSTALL=$install
5290 LIBTARGET=${LIBTARGET}
5291 SLIBNAME=${SLIBNAME}
5292 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5293 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5294 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5295 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5296 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5297 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5298 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5299 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5300 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5301 NOREDZONE_FLAGS=$noredzone_flags
5302 EOF
5303
5304 get_version(){
5305     lcname=lib${1}
5306     name=$(toupper $lcname)
5307     file=$source_path/$lcname/version.h
5308     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5309     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5310     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5311     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5312     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5313     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5314 }
5315
5316 map 'get_version $v' $LIBRARY_LIST
5317
5318 print_program_libs(){
5319     eval "program_libs=\$${1}_libs"
5320     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5321 }
5322
5323 map 'print_program_libs $v' $PROGRAM_LIST
5324
5325 cat > $TMPH <<EOF
5326 /* Automatically generated by configure - do not modify! */
5327 #ifndef FFMPEG_CONFIG_H
5328 #define FFMPEG_CONFIG_H
5329 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5330 #define FFMPEG_LICENSE "$(c_escape $license)"
5331 #define CONFIG_THIS_YEAR 2014
5332 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5333 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5334 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5335 #define av_restrict $_restrict
5336 #define EXTERN_PREFIX "${extern_prefix}"
5337 #define EXTERN_ASM ${extern_prefix}
5338 #define BUILDSUF "$build_suffix"
5339 #define SLIBSUF "$SLIBSUF"
5340 #define HAVE_MMX2 HAVE_MMXEXT
5341 EOF
5342
5343 test -n "$assert_level" &&
5344     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5345
5346 test -n "$malloc_prefix" &&
5347     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5348
5349 if enabled yasm; then
5350     append config_files $TMPASM
5351     printf '' >$TMPASM
5352 fi
5353
5354 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5355
5356
5357 mkdir -p doc
5358 echo "@c auto-generated by configure" > doc/config.texi
5359
5360 print_config ARCH_   "$config_files" $ARCH_LIST
5361 print_config HAVE_   "$config_files" $HAVE_LIST
5362 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5363                                      $CONFIG_EXTRA      \
5364                                      $ALL_COMPONENTS    \
5365
5366 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5367 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5368
5369 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5370 cp_if_changed $TMPH config.h
5371 touch .config
5372
5373 enabled yasm && cp_if_changed $TMPASM config.asm
5374
5375 cat > $TMPH <<EOF
5376 /* Generated by ffconf */
5377 #ifndef AVUTIL_AVCONFIG_H
5378 #define AVUTIL_AVCONFIG_H
5379 EOF
5380
5381 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5382
5383 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5384
5385 cp_if_changed $TMPH libavutil/avconfig.h
5386
5387 if test -n "$WARNINGS"; then
5388     printf "\n$WARNINGS"
5389     enabled fatal_warnings && exit 1
5390 fi
5391
5392 # build pkg-config files
5393
5394 pkgconfig_generate(){
5395     name=$1
5396     shortname=${name#lib}${build_suffix}
5397     comment=$2
5398     version=$3
5399     libs=$4
5400     requires=$5
5401     enabled ${name#lib} || return 0
5402     mkdir -p $name
5403     cat <<EOF > $name/$name${build_suffix}.pc
5404 prefix=$prefix
5405 exec_prefix=\${prefix}
5406 libdir=$libdir
5407 includedir=$incdir
5408
5409 Name: $name
5410 Description: $comment
5411 Version: $version
5412 Requires: $(enabled shared || echo $requires)
5413 Requires.private: $(enabled shared && echo $requires)
5414 Conflicts:
5415 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5416 Libs.private: $(enabled shared && echo $libs)
5417 Cflags: -I\${includedir}
5418 EOF
5419
5420 mkdir -p doc/examples/pc-uninstalled
5421 includedir=${source_path}
5422 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5423     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5424 prefix=
5425 exec_prefix=
5426 libdir=\${pcfiledir}/../../../$name
5427 includedir=${includedir}
5428
5429 Name: $name
5430 Description: $comment
5431 Version: $version
5432 Requires: $requires
5433 Conflicts:
5434 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5435 Cflags: -I\${includedir}
5436 EOF
5437 }
5438
5439 lavfi_libs="libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5440 enabled libavfilter_deps_avcodec    && prepend lavfi_libs "libavcodec${build_suffix} = $LIBAVCODEC_VERSION,"
5441 enabled libavfilter_deps_avformat   && prepend lavfi_libs "libavformat${build_suffix} = $LIBAVFORMAT_VERSION,"
5442 enabled libavfilter_deps_avresample && prepend lavfi_libs "libavresample${build_suffix} = $LIBAVRESAMPLE_VERSION,"
5443 enabled libavfilter_deps_swscale    && prepend lavfi_libs "libswscale${build_suffix} = $LIBSWSCALE_VERSION,"
5444 enabled libavfilter_deps_swresample && prepend lavfi_libs "libswresample${build_suffix} = $LIBSWRESAMPLE_VERSION,"
5445 enabled libavfilter_deps_postproc   && prepend lavfi_libs "libpostproc${build_suffix} = $LIBPOSTPROC_VERSION,"
5446 lavfi_libs=${lavfi_libs%, }
5447
5448 lavd_libs="libavformat${build_suffix} = $LIBAVFORMAT_VERSION"
5449 enabled lavfi_indev && prepend lavd_libs "libavfilter${build_suffix} = $LIBAVFILTER_VERSION,"
5450
5451 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
5452 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5453 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec${build_suffix} = $LIBAVCODEC_VERSION"
5454 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs" "$lavd_libs"
5455 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
5456 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""           "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5457 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5458 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5459 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"