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-libbs2b         enable bs2b DSP library [no]
 203   --enable-libcaca         enable textual display using libcaca
 204   --enable-libcelt         enable CELT decoding via libcelt [no]
 205   --enable-libcdio         enable audio CD grabbing with libcdio
 206   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 207                            and libraw1394 [no]
 208   --enable-libfaac         enable AAC encoding via libfaac [no]
 209   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 210   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 211   --enable-libfreetype     enable libfreetype [no]
 212   --enable-libgme          enable Game Music Emu via libgme [no]
 213   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 214   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 215   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 216   --enable-libmodplug      enable ModPlug via libmodplug [no]
 217   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 218   --enable-libnut          enable NUT (de)muxing via libnut,
 219                            native (de)muxer exists [no]
 220   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 221   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 222   --enable-libopencv       enable video filtering via libopencv [no]
 223   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 224   --enable-libopus         enable Opus de/encoding via libopus [no]
 225   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 226   --enable-libquvi         enable quvi input via libquvi [no]
 227   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 228   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 229   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 230   --enable-libsoxr         enable Include libsoxr resampling [no]
 231   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 232   --enable-libssh          enable SFTP protocol via libssh [no]
 233   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 234   --enable-libtheora       enable Theora encoding via libtheora [no]
 235   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 236   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 237   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 238   --enable-libvidstab      enable video stabilization using vid.stab [no]
 239   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 240   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 241   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 242                            native implementation exists [no]
 243   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 244   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 245   --enable-libwebp         enable WebP encoding via libwebp [no]
 246   --enable-libx264         enable H.264 encoding via x264 [no]
 247   --enable-libx265         enable HEVC encoding via x265 [no]
 248   --enable-libxavs         enable AVS encoding via xavs [no]
 249   --enable-libxvid         enable Xvid encoding via xvidcore,
 250                            native MPEG-4/Xvid encoder exists [no]
 251   --enable-libzmq          enable message passing via libzmq [no]
 252   --enable-libzvbi         enable teletext support via libzvbi [no]
 253   --enable-decklink        enable Blackmagick DeckLink output [no]
 254   --enable-openal          enable OpenAL 1.1 capture support [no]
 255   --enable-opencl          enable OpenCL code
 256   --enable-opengl          enable OpenGL rendering [no]
 257   --enable-openssl         enable openssl [no]
 258   --enable-x11grab         enable X11 grabbing [no]
 259   --disable-xlib           disable xlib [autodetect]
 260   --disable-zlib           disable zlib [autodetect]
 261
 262 Toolchain options:
 263   --arch=ARCH              select architecture [$arch]
 264   --cpu=CPU                select the minimum required CPU (affects
 265                            instruction selection, may crash on older CPUs)
 266   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 267   --progs-suffix=SUFFIX    program name suffix []
 268   --enable-cross-compile   assume a cross-compiler is used
 269   --sysroot=PATH           root of cross-build tree
 270   --sysinclude=PATH        location of cross-build system headers
 271   --target-os=OS           compiler targets OS [$target_os]
 272   --target-exec=CMD        command to run executables on target
 273   --target-path=DIR        path to view of build directory on target
 274   --target-samples=DIR     path to samples directory on target
 275   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 276   --toolchain=NAME         set tool defaults according to NAME
 277   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 278   --nm=NM                  use nm tool NM [$nm_default]
 279   --ar=AR                  use archive tool AR [$ar_default]
 280   --as=AS                  use assembler AS [$as_default]
 281   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 282   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 283   --cc=CC                  use C compiler CC [$cc_default]
 284   --cxx=CXX                use C compiler CXX [$cxx_default]
 285   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 286   --ld=LD                  use linker LD [$ld_default]
 287   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
 288   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 289   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 290   --host-cc=HOSTCC         use host C compiler HOSTCC
 291   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 292   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 293   --host-ld=HOSTLD         use host linker HOSTLD
 294   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 295   --host-libs=HLIBS        use libs HLIBS when linking for host
 296   --host-os=OS             compiler host OS [$target_os]
 297   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 298   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 299   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 300   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 301   --extra-version=STRING   version string suffix []
 302   --optflags=OPTFLAGS      override optimization-related compiler flags
 303   --build-suffix=SUFFIX    library name suffix []
 304   --enable-pic             build position-independent code
 305   --enable-thumb           compile for Thumb instruction set
 306   --enable-lto             use link-time optimization
 307
 308 Advanced options (experts only):
 309   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 310   --disable-symver         disable symbol versioning
 311   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 312   --disable-safe-bitstream-reader
 313                            disable buffer boundary checking in bitreaders
 314                            (faster, but may crash)
 315   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 316   --enable-sram            allow use of on-chip SRAM
 317
 318 Optimization options (experts only):
 319   --disable-asm            disable all assembler optimizations
 320   --disable-altivec        disable AltiVec optimizations
 321   --disable-amd3dnow       disable 3DNow! optimizations
 322   --disable-amd3dnowext    disable 3DNow! extended optimizations
 323   --disable-mmx            disable MMX optimizations
 324   --disable-mmxext         disable MMXEXT optimizations
 325   --disable-sse            disable SSE optimizations
 326   --disable-sse2           disable SSE2 optimizations
 327   --disable-sse3           disable SSE3 optimizations
 328   --disable-ssse3          disable SSSE3 optimizations
 329   --disable-sse4           disable SSE4 optimizations
 330   --disable-sse42          disable SSE4.2 optimizations
 331   --disable-avx            disable AVX optimizations
 332   --disable-xop            disable XOP optimizations
 333   --disable-fma3           disable FMA3 optimizations
 334   --disable-fma4           disable FMA4 optimizations
 335   --disable-avx2           disable AVX2 optimizations
 336   --disable-armv5te        disable armv5te optimizations
 337   --disable-armv6          disable armv6 optimizations
 338   --disable-armv6t2        disable armv6t2 optimizations
 339   --disable-vfp            disable VFP optimizations
 340   --disable-neon           disable NEON optimizations
 341   --disable-inline-asm     disable use of inline assembler
 342   --disable-yasm           disable use of yasm assembler
 343   --disable-mips32r2       disable MIPS32R2 optimizations
 344   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 345   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 346   --disable-mipsfpu        disable floating point MIPS optimizations
 347   --disable-fast-unaligned consider unaligned accesses slow
 348
 349 Developer options (useful when working on FFmpeg itself):
 350   --disable-debug          disable debugging symbols
 351   --enable-debug=LEVEL     set the debug level [$debuglevel]
 352   --disable-optimizations  disable compiler optimizations
 353   --enable-extra-warnings  enable more compiler warnings
 354   --disable-stripping      disable stripping of executables and shared libraries
 355   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 356                            2 causes a slowdown at runtime.
 357   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 358   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 359                            leaks and errors, using the specified valgrind binary.
 360                            Cannot be combined with --target-exec
 361   --enable-ftrapv          Trap arithmetic overflows
 362   --samples=PATH           location of test samples for FATE, if not set use
 363                            \$FATE_SAMPLES at make invocation time.
 364   --enable-neon-clobber-test check NEON registers for clobbering (should be
 365                            used only for debugging purposes)
 366   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 367                            should be used only for debugging purposes)
 368   --enable-random          randomly enable/disable components
 369   --disable-random
 370   --enable-random=LIST     randomly enable/disable specific components or
 371   --disable-random=LIST    component groups. LIST is a comma-separated list
 372                            of NAME[:PROB] entries where NAME is a component
 373                            (group) and PROB the probability associated with
 374                            NAME (default 0.5).
 375   --random-seed=VALUE      seed value for --enable/disable-random
 376
 377 NOTE: Object files are built at the place where configure is launched.
 378 EOF
 379   exit 0
 380 }
 381
 382 quotes='""'
 383
 384 log(){
 385     echo "$@" >> $logfile
 386 }
 387
 388 log_file(){
 389     log BEGIN $1
 390     pr -n -t $1 >> $logfile
 391     log END $1
 392 }
 393
 394 echolog(){
 395     log "$@"
 396     echo "$@"
 397 }
 398
 399 warn(){
 400     log "WARNING: $*"
 401     WARNINGS="${WARNINGS}WARNING: $*\n"
 402 }
 403
 404 die(){
 405     echolog "$@"
 406     cat <<EOF
 407
 408 If you think configure made a mistake, make sure you are using the latest
 409 version from Git.  If the latest version fails, report the problem to the
 410 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 411 EOF
 412     if disabled logging; then
 413         cat <<EOF
 414 Rerun configure with logging enabled (do not use --disable-logging), and
 415 include the log this produces with your report.
 416 EOF
 417     else
 418         cat <<EOF
 419 Include the log file "$logfile" produced by configure as this will help
 420 solve the problem.
 421 EOF
 422     fi
 423     exit 1
 424 }
 425
 426 # Avoid locale weirdness, besides we really just want to translate ASCII.
 427 toupper(){
 428     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 429 }
 430
 431 tolower(){
 432     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 433 }
 434
 435 c_escape(){
 436     echo "$*" | sed 's/["\\]/\\\0/g'
 437 }
 438
 439 sh_quote(){
 440     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 441     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 442     echo "$v"
 443 }
 444
 445 cleanws(){
 446     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
 447 }
 448
 449 filter(){
 450     pat=$1
 451     shift
 452     for v; do
 453         eval "case $v in $pat) echo $v ;; esac"
 454     done
 455 }
 456
 457 filter_out(){
 458     pat=$1
 459     shift
 460     for v; do
 461         eval "case $v in $pat) ;; *) echo $v ;; esac"
 462     done
 463 }
 464
 465 map(){
 466     m=$1
 467     shift
 468     for v; do eval $m; done
 469 }
 470
 471 add_suffix(){
 472     suffix=$1
 473     shift
 474     for v; do echo ${v}${suffix}; done
 475 }
 476
 477 set_all(){
 478     value=$1
 479     shift
 480     for var in $*; do
 481         eval $var=$value
 482     done
 483 }
 484
 485 set_weak(){
 486     value=$1
 487     shift
 488     for var; do
 489         eval : \${$var:=$value}
 490     done
 491 }
 492
 493 sanitize_var_name(){
 494     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 495 }
 496
 497 set_safe(){
 498     var=$1
 499     shift
 500     eval $(sanitize_var_name "$var")='$*'
 501 }
 502
 503 get_safe(){
 504     eval echo \$$(sanitize_var_name "$1")
 505 }
 506
 507 pushvar(){
 508     for pvar in $*; do
 509         eval level=\${${pvar}_level:=0}
 510         eval ${pvar}_${level}="\$$pvar"
 511         eval ${pvar}_level=$(($level+1))
 512     done
 513 }
 514
 515 popvar(){
 516     for pvar in $*; do
 517         eval level=\${${pvar}_level:-0}
 518         test $level = 0 && continue
 519         eval level=$(($level-1))
 520         eval $pvar="\${${pvar}_${level}}"
 521         eval ${pvar}_level=$level
 522         eval unset ${pvar}_${level}
 523     done
 524 }
 525
 526 enable(){
 527     set_all yes $*
 528 }
 529
 530 disable(){
 531     set_all no $*
 532 }
 533
 534 enable_weak(){
 535     set_weak yes $*
 536 }
 537
 538 disable_weak(){
 539     set_weak no $*
 540 }
 541
 542 enable_safe(){
 543     for var; do
 544         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 545     done
 546 }
 547
 548 disable_safe(){
 549     for var; do
 550         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 551     done
 552 }
 553
 554 do_enable_deep(){
 555     for var; do
 556         enabled $var && continue
 557         eval sel="\$${var}_select"
 558         eval sgs="\$${var}_suggest"
 559         pushvar var sgs
 560         enable_deep $sel
 561         popvar sgs
 562         enable_deep_weak $sgs
 563         popvar var
 564     done
 565 }
 566
 567 enable_deep(){
 568     do_enable_deep $*
 569     enable $*
 570 }
 571
 572 enable_deep_weak(){
 573     for var; do
 574         disabled $var && continue
 575         pushvar var
 576         do_enable_deep $var
 577         popvar var
 578         enable_weak $var
 579     done
 580 }
 581
 582 enabled(){
 583     test "${1#!}" = "$1" && op== || op=!=
 584     eval test "x\$${1#!}" $op "xyes"
 585 }
 586
 587 disabled(){
 588     test "${1#!}" = "$1" && op== || op=!=
 589     eval test "x\$${1#!}" $op "xno"
 590 }
 591
 592 enabled_all(){
 593     for opt; do
 594         enabled $opt || return 1
 595     done
 596 }
 597
 598 disabled_all(){
 599     for opt; do
 600         disabled $opt || return 1
 601     done
 602 }
 603
 604 enabled_any(){
 605     for opt; do
 606         enabled $opt && return 0
 607     done
 608 }
 609
 610 disabled_any(){
 611     for opt; do
 612         disabled $opt && return 0
 613     done
 614     return 1
 615 }
 616
 617 set_default(){
 618     for opt; do
 619         eval : \${$opt:=\$${opt}_default}
 620     done
 621 }
 622
 623 is_in(){
 624     value=$1
 625     shift
 626     for var in $*; do
 627         [ $var = $value ] && return 0
 628     done
 629     return 1
 630 }
 631
 632 do_check_deps(){
 633     for cfg; do
 634         cfg="${cfg#!}"
 635         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 636         disabled ${cfg}_checking && continue
 637         enable ${cfg}_checking
 638         append allopts $cfg
 639
 640         eval dep_all="\$${cfg}_deps"
 641         eval dep_any="\$${cfg}_deps_any"
 642         eval dep_sel="\$${cfg}_select"
 643         eval dep_sgs="\$${cfg}_suggest"
 644         eval dep_ifa="\$${cfg}_if"
 645         eval dep_ifn="\$${cfg}_if_any"
 646
 647         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 648         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 649         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 650
 651         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 652         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 653         enabled_all  $dep_all || disable $cfg
 654         enabled_any  $dep_any || disable $cfg
 655         disabled_any $dep_sel && disable $cfg
 656
 657         if enabled $cfg; then
 658             enable_deep $dep_sel
 659             enable_deep_weak $dep_sgs
 660         fi
 661
 662         disable ${cfg}_checking
 663     done
 664 }
 665
 666 check_deps(){
 667     unset allopts
 668
 669     do_check_deps "$@"
 670
 671     for cfg in $allopts; do
 672         enabled $cfg || continue
 673         eval dep_extralibs="\$${cfg}_extralibs"
 674         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 675     done
 676 }
 677
 678 print_config(){
 679     pfx=$1
 680     files=$2
 681     shift 2
 682     map 'eval echo "$v \${$v:-no}"' "$@" |
 683     awk "BEGIN { split(\"$files\", files) }
 684         {
 685             c = \"$pfx\" toupper(\$1);
 686             v = \$2;
 687             sub(/yes/, 1, v);
 688             sub(/no/,  0, v);
 689             for (f in files) {
 690                 file = files[f];
 691                 if (file ~ /\\.h\$/) {
 692                     printf(\"#define %s %d\\n\", c, v) >>file;
 693                 } else if (file ~ /\\.asm\$/) {
 694                     printf(\"%%define %s %d\\n\", c, v) >>file;
 695                 } else if (file ~ /\\.mak\$/) {
 696                     n = -v ? \"\" : \"!\";
 697                     printf(\"%s%s=yes\\n\", n, c) >>file;
 698                 } else if (file ~ /\\.texi\$/) {
 699                     pre = -v ? \"\" : \"@c \";
 700                     yesno = \$2;
 701                     c2 = tolower(c);
 702                     gsub(/_/, \"-\", c2);
 703                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 704                 }
 705             }
 706         }"
 707 }
 708
 709 print_enabled(){
 710     suf=$1
 711     shift
 712     for v; do
 713         enabled $v && printf "%s\n" ${v%$suf};
 714     done
 715 }
 716
 717 append(){
 718     var=$1
 719     shift
 720     eval "$var=\"\$$var $*\""
 721 }
 722
 723 prepend(){
 724     var=$1
 725     shift
 726     eval "$var=\"$* \$$var\""
 727 }
 728
 729 unique(){
 730     var=$1
 731     uniq_list=""
 732     for tok in $(eval echo \$$var); do
 733         uniq_list="$(filter_out $tok $uniq_list) $tok"
 734     done
 735     eval "$var=\"${uniq_list}\""
 736 }
 737
 738 add_cppflags(){
 739     append CPPFLAGS "$@"
 740 }
 741
 742 add_cflags(){
 743     append CFLAGS $($cflags_filter "$@")
 744 }
 745
 746 add_cxxflags(){
 747     append CXXFLAGS $($cflags_filter "$@")
 748 }
 749
 750 add_asflags(){
 751     append ASFLAGS $($asflags_filter "$@")
 752 }
 753
 754 add_ldflags(){
 755     append LDFLAGS $($ldflags_filter "$@")
 756 }
 757
 758 add_stripflags(){
 759     append ASMSTRIPFLAGS "$@"
 760 }
 761
 762 add_extralibs(){
 763     prepend extralibs $($ldflags_filter "$@")
 764 }
 765
 766 add_host_cppflags(){
 767     append host_cppflags "$@"
 768 }
 769
 770 add_host_cflags(){
 771     append host_cflags $($host_cflags_filter "$@")
 772 }
 773
 774 add_host_ldflags(){
 775     append host_ldflags $($host_ldflags_filter "$@")
 776 }
 777
 778 add_compat(){
 779     append compat_objs $1
 780     shift
 781     map 'add_cppflags -D$v' "$@"
 782 }
 783
 784 check_cmd(){
 785     log "$@"
 786     "$@" >> $logfile 2>&1
 787 }
 788
 789 check_stat(){
 790     log check_stat "$@"
 791     stat "$1" >> $logfile 2>&1
 792 }
 793
 794 cc_o(){
 795     eval printf '%s\\n' $CC_O
 796 }
 797
 798 cc_e(){
 799     eval printf '%s\\n' $CC_E
 800 }
 801
 802 check_cc(){
 803     log check_cc "$@"
 804     cat > $TMPC
 805     log_file $TMPC
 806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 807 }
 808
 809 check_cxx(){
 810     log check_cxx "$@"
 811     cat > $TMPCPP
 812     log_file $TMPCPP
 813     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 814 }
 815
 816 check_oc(){
 817     log check_oc "$@"
 818     cat > $TMPM
 819     log_file $TMPM
 820     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 821 }
 822
 823 check_cpp(){
 824     log check_cpp "$@"
 825     cat > $TMPC
 826     log_file $TMPC
 827     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 828 }
 829
 830 as_o(){
 831     eval printf '%s\\n' $AS_O
 832 }
 833
 834 check_as(){
 835     log check_as "$@"
 836     cat > $TMPS
 837     log_file $TMPS
 838     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 839 }
 840
 841 check_inline_asm(){
 842     log check_inline_asm "$@"
 843     name="$1"
 844     code="$2"
 845     shift 2
 846     disable $name
 847     check_cc "$@" <<EOF && enable $name
 848 void foo(void){ __asm__ volatile($code); }
 849 EOF
 850 }
 851
 852 check_insn(){
 853     log check_insn "$@"
 854     check_inline_asm ${1}_inline "\"$2\""
 855     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 856 }
 857
 858 check_yasm(){
 859     log check_yasm "$@"
 860     echo "$1" > $TMPS
 861     log_file $TMPS
 862     shift 1
 863     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 864 }
 865
 866 ld_o(){
 867     eval printf '%s\\n' $LD_O
 868 }
 869
 870 check_ld(){
 871     log check_ld "$@"
 872     type=$1
 873     shift 1
 874     flags=$(filter_out '-l*|*.so' $@)
 875     libs=$(filter '-l*|*.so' $@)
 876     check_$type $($cflags_filter $flags) || return
 877     flags=$($ldflags_filter $flags)
 878     libs=$($ldflags_filter $libs)
 879     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 880 }
 881
 882 print_include(){
 883     hdr=$1
 884     test "${hdr%.h}" = "${hdr}" &&
 885         echo "#include $hdr"    ||
 886         echo "#include <$hdr>"
 887 }
 888
 889 check_code(){
 890     log check_code "$@"
 891     check=$1
 892     headers=$2
 893     code=$3
 894     shift 3
 895     {
 896         for hdr in $headers; do
 897             print_include $hdr
 898         done
 899         echo "int main(void) { $code; return 0; }"
 900     } | check_$check "$@"
 901 }
 902
 903 check_cppflags(){
 904     log check_cppflags "$@"
 905     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 906 int x;
 907 EOF
 908 }
 909
 910 test_cflags(){
 911     log test_cflags "$@"
 912     set -- $($cflags_filter "$@")
 913     check_cc "$@" <<EOF
 914 int x;
 915 EOF
 916 }
 917
 918 check_cflags(){
 919     log check_cflags "$@"
 920     test_cflags "$@" && add_cflags "$@"
 921 }
 922
 923 check_cxxflags(){
 924     log check_cxxflags "$@"
 925     set -- $($cflags_filter "$@")
 926     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 927 int x;
 928 EOF
 929 }
 930
 931 test_ldflags(){
 932     log test_ldflags "$@"
 933     check_ld "cc" "$@" <<EOF
 934 int main(void){ return 0; }
 935 EOF
 936 }
 937
 938 check_ldflags(){
 939     log check_ldflags "$@"
 940     test_ldflags "$@" && add_ldflags "$@"
 941 }
 942
 943 test_stripflags(){
 944     log test_stripflags "$@"
 945     # call check_cc to get a fresh TMPO
 946     check_cc <<EOF
 947 int main(void) { return 0; }
 948 EOF
 949     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 950 }
 951
 952 check_stripflags(){
 953     log check_stripflags "$@"
 954     test_stripflags "$@" && add_stripflags "$@"
 955 }
 956
 957 check_header(){
 958     log check_header "$@"
 959     header=$1
 960     shift
 961     disable_safe $header
 962     check_cpp "$@" <<EOF && enable_safe $header
 963 #include <$header>
 964 int x;
 965 EOF
 966 }
 967
 968 check_header_oc(){
 969     log check_header_oc "$@"
 970     rm -f -- "$TMPO"
 971     header=$1
 972     shift
 973     disable_safe $header
 974     {
 975        echo "#include <$header>"
 976        echo "int main(void) { return 0; }"
 977     } | check_oc && check_stat "$TMPO" && enable_safe $headers
 978 }
 979
 980 check_func(){
 981     log check_func "$@"
 982     func=$1
 983     shift
 984     disable $func
 985     check_ld "cc" "$@" <<EOF && enable $func
 986 extern int $func();
 987 int main(void){ $func(); }
 988 EOF
 989 }
 990
 991 check_mathfunc(){
 992     log check_mathfunc "$@"
 993     func=$1
 994     narg=$2
 995     shift 2
 996     test $narg = 2 && args="f, g" || args="f"
 997     disable $func
 998     check_ld "cc" "$@" <<EOF && enable $func
 999 #include <math.h>
1000 float foo(float f, float g) { return $func($args); }
1001 int main(void){ return (int) foo; }
1002 EOF
1003 }
1004
1005 check_func_headers(){
1006     log check_func_headers "$@"
1007     headers=$1
1008     funcs=$2
1009     shift 2
1010     {
1011         for hdr in $headers; do
1012             print_include $hdr
1013         done
1014         for func in $funcs; do
1015             echo "long check_$func(void) { return (long) $func; }"
1016         done
1017         echo "int main(void) { return 0; }"
1018     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1019 }
1020
1021 check_class_headers_cpp(){
1022     log check_class_headers_cpp "$@"
1023     headers=$1
1024     classes=$2
1025     shift 2
1026     {
1027         for hdr in $headers; do
1028             echo "#include <$hdr>"
1029         done
1030         echo "int main(void) { "
1031         i=1
1032         for class in $classes; do
1033             echo "$class obj$i;"
1034             i=$(expr $i + 1)
1035         done
1036         echo "return 0; }"
1037     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1038 }
1039
1040 check_cpp_condition(){
1041     log check_cpp_condition "$@"
1042     header=$1
1043     condition=$2
1044     shift 2
1045     check_cpp "$@" <<EOF
1046 #include <$header>
1047 #if !($condition)
1048 #error "unsatisfied condition: $condition"
1049 #endif
1050 EOF
1051 }
1052
1053 check_lib(){
1054     log check_lib "$@"
1055     header="$1"
1056     func="$2"
1057     shift 2
1058     check_header $header && check_func $func "$@" && add_extralibs "$@"
1059 }
1060
1061 check_lib2(){
1062     log check_lib2 "$@"
1063     headers="$1"
1064     funcs="$2"
1065     shift 2
1066     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1067 }
1068
1069 check_lib_cpp(){
1070     log check_lib_cpp "$@"
1071     headers="$1"
1072     classes="$2"
1073     shift 2
1074     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1075 }
1076
1077 check_pkg_config(){
1078     log check_pkg_config "$@"
1079     pkgandversion="$1"
1080     pkg="${1%% *}"
1081     headers="$2"
1082     funcs="$3"
1083     shift 3
1084     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1085     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1086     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1087     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1088         set_safe ${pkg}_cflags $pkg_cflags   &&
1089         set_safe ${pkg}_libs   $pkg_libs
1090 }
1091
1092 check_exec(){
1093     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1094 }
1095
1096 check_exec_crash(){
1097     code=$(cat)
1098
1099     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1100     # are safe but may not be available everywhere.  Thus we use
1101     # raise(SIGTERM) instead.  The check is run in a subshell so we
1102     # can redirect the "Terminated" message from the shell.  SIGBUS
1103     # is not defined by standard C so it is used conditionally.
1104
1105     (check_exec "$@") >> $logfile 2>&1 <<EOF
1106 #include <signal.h>
1107 static void sighandler(int sig){
1108     raise(SIGTERM);
1109 }
1110 int foo(void){
1111     $code
1112 }
1113 int (*func_ptr)(void) = foo;
1114 int main(void){
1115     signal(SIGILL, sighandler);
1116     signal(SIGFPE, sighandler);
1117     signal(SIGSEGV, sighandler);
1118 #ifdef SIGBUS
1119     signal(SIGBUS, sighandler);
1120 #endif
1121     return func_ptr();
1122 }
1123 EOF
1124 }
1125
1126 check_type(){
1127     log check_type "$@"
1128     headers=$1
1129     type=$2
1130     shift 2
1131     disable_safe "$type"
1132     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1133 }
1134
1135 check_struct(){
1136     log check_struct "$@"
1137     headers=$1
1138     struct=$2
1139     member=$3
1140     shift 3
1141     disable_safe "${struct}_${member}"
1142     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1143         enable_safe "${struct}_${member}"
1144 }
1145
1146 check_builtin(){
1147     log check_builtin "$@"
1148     name=$1
1149     headers=$2
1150     builtin=$3
1151     shift 3
1152     disable "$name"
1153     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1154 }
1155
1156 check_compile_assert(){
1157     log check_compile_assert "$@"
1158     name=$1
1159     headers=$2
1160     condition=$3
1161     shift 3
1162     disable "$name"
1163     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1164 }
1165
1166 require(){
1167     name="$1"
1168     header="$2"
1169     func="$3"
1170     shift 3
1171     check_lib $header $func "$@" || die "ERROR: $name not found"
1172 }
1173
1174 require2(){
1175     name="$1"
1176     headers="$2"
1177     func="$3"
1178     shift 3
1179     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1180 }
1181
1182 require_cpp(){
1183     name="$1"
1184     headers="$2"
1185     classes="$3"
1186     shift 3
1187     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1188 }
1189
1190 require_pkg_config(){
1191     pkg="$1"
1192     check_pkg_config "$@" || die "ERROR: $pkg not found"
1193     add_cflags    $(get_safe ${pkg}_cflags)
1194     add_extralibs $(get_safe ${pkg}_libs)
1195 }
1196
1197 require_libfreetype(){
1198     log require_libfreetype "$@"
1199     pkg="freetype2"
1200     check_cmd $pkg_config --exists --print-errors $pkg \
1201       || die "ERROR: $pkg not found"
1202     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1203     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1204     {
1205         echo "#include <ft2build.h>"
1206         echo "#include FT_FREETYPE_H"
1207         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1208         echo "int main(void) { return 0; }"
1209     } | check_ld "cc" $pkg_cflags $pkg_libs \
1210       && set_safe ${pkg}_cflags $pkg_cflags \
1211       && set_safe ${pkg}_libs   $pkg_libs \
1212       || die "ERROR: $pkg not found"
1213     add_cflags    $(get_safe ${pkg}_cflags)
1214     add_extralibs $(get_safe ${pkg}_libs)
1215 }
1216
1217 hostcc_e(){
1218     eval printf '%s\\n' $HOSTCC_E
1219 }
1220
1221 hostcc_o(){
1222     eval printf '%s\\n' $HOSTCC_O
1223 }
1224
1225 check_host_cc(){
1226     log check_host_cc "$@"
1227     cat > $TMPC
1228     log_file $TMPC
1229     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1230 }
1231
1232 check_host_cpp(){
1233     log check_host_cpp "$@"
1234     cat > $TMPC
1235     log_file $TMPC
1236     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1237 }
1238
1239 check_host_cppflags(){
1240     log check_host_cppflags "$@"
1241     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1242 int x;
1243 EOF
1244 }
1245
1246 check_host_cflags(){
1247     log check_host_cflags "$@"
1248     set -- $($host_cflags_filter "$@")
1249     check_host_cc "$@" <<EOF && append host_cflags "$@"
1250 int x;
1251 EOF
1252 }
1253
1254 check_host_cpp_condition(){
1255     log check_host_cpp_condition "$@"
1256     header=$1
1257     condition=$2
1258     shift 2
1259     check_host_cpp "$@" <<EOF
1260 #include <$header>
1261 #if !($condition)
1262 #error "unsatisfied condition: $condition"
1263 #endif
1264 EOF
1265 }
1266
1267 apply(){
1268     file=$1
1269     shift
1270     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1271 }
1272
1273 cp_if_changed(){
1274     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1275     mkdir -p "$(dirname $2)"
1276     $cp_f "$1" "$2"
1277 }
1278
1279 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1280 # system-dependent things.
1281
1282 COMPONENT_LIST="
1283     bsfs
1284     decoders
1285     demuxers
1286     encoders
1287     filters
1288     hwaccels
1289     indevs
1290     muxers
1291     outdevs
1292     parsers
1293     protocols
1294 "
1295
1296 EXAMPLE_LIST="
1297     avio_reading_example
1298     decoding_encoding_example
1299     demuxing_decoding_example
1300     filter_audio_example
1301     filtering_audio_example
1302     filtering_video_example
1303     metadata_example
1304     muxing_example
1305     remuxing_example
1306     resampling_audio_example
1307     scaling_video_example
1308     transcode_aac_example
1309     transcoding_example
1310 "
1311
1312 EXTERNAL_LIBRARY_LIST="
1313     avisynth
1314     bzlib
1315     crystalhd
1316     decklink
1317     frei0r
1318     gnutls
1319     iconv
1320     ladspa
1321     libaacplus
1322     libass
1323     libbluray
1324     libbs2b
1325     libcaca
1326     libcdio
1327     libcelt
1328     libdc1394
1329     libfaac
1330     libfdk_aac
1331     libflite
1332     libfontconfig
1333     libfreetype
1334     libgme
1335     libgsm
1336     libiec61883
1337     libilbc
1338     libmodplug
1339     libmp3lame
1340     libnut
1341     libopencore_amrnb
1342     libopencore_amrwb
1343     libopencv
1344     libopenjpeg
1345     libopus
1346     libpulse
1347     libquvi
1348     librtmp
1349     libschroedinger
1350     libshine
1351     libsoxr
1352     libspeex
1353     libssh
1354     libstagefright_h264
1355     libtheora
1356     libtwolame
1357     libutvideo
1358     libv4l2
1359     libvidstab
1360     libvo_aacenc
1361     libvo_amrwbenc
1362     libvorbis
1363     libvpx
1364     libwavpack
1365     libwebp
1366     libx264
1367     libx265
1368     libxavs
1369     libxvid
1370     libzmq
1371     libzvbi
1372     openal
1373     opencl
1374     opengl
1375     openssl
1376     x11grab
1377     xlib
1378     zlib
1379 "
1380
1381 DOCUMENT_LIST="
1382     doc
1383     htmlpages
1384     manpages
1385     podpages
1386     txtpages
1387 "
1388
1389 FEATURE_LIST="
1390     ftrapv
1391     gray
1392     hardcoded_tables
1393     runtime_cpudetect
1394     safe_bitstream_reader
1395     shared
1396     small
1397     sram
1398     static
1399     swscale_alpha
1400 "
1401
1402 HWACCEL_LIST="
1403     dxva2
1404     vaapi
1405     vda
1406     vdpau
1407     xvmc
1408 "
1409
1410 LIBRARY_LIST="
1411     avcodec
1412     avdevice
1413     avfilter
1414     avformat
1415     avresample
1416     avutil
1417     postproc
1418     swresample
1419     swscale
1420 "
1421
1422 LICENSE_LIST="
1423     gpl
1424     nonfree
1425     version3
1426 "
1427
1428 PROGRAM_LIST="
1429     ffplay
1430     ffprobe
1431     ffserver
1432     ffmpeg
1433 "
1434
1435 SUBSYSTEM_LIST="
1436     dct
1437     dwt
1438     error_resilience
1439     fast_unaligned
1440     fft
1441     lsp
1442     lzo
1443     mdct
1444     network
1445     rdft
1446 "
1447
1448 CONFIG_LIST="
1449     $COMPONENT_LIST
1450     $DOCUMENT_LIST
1451     $EXAMPLE_LIST
1452     $EXTERNAL_LIBRARY_LIST
1453     $FEATURE_LIST
1454     $HWACCEL_LIST
1455     $LICENSE_LIST
1456     $LIBRARY_LIST
1457     $PROGRAM_LIST
1458     $SUBSYSTEM_LIST
1459     fontconfig
1460     incompatible_libav_abi
1461     memalign_hack
1462     memory_poisoning
1463     neon_clobber_test
1464     pic
1465     pod2man
1466     raise_major
1467     thumb
1468     xmm_clobber_test
1469 "
1470
1471 THREADS_LIST="
1472     pthreads
1473     os2threads
1474     w32threads
1475 "
1476
1477 ATOMICS_LIST="
1478     atomics_gcc
1479     atomics_suncc
1480     atomics_win32
1481 "
1482
1483 ARCH_LIST="
1484     aarch64
1485     alpha
1486     arm
1487     avr32
1488     avr32_ap
1489     avr32_uc
1490     bfin
1491     ia64
1492     m68k
1493     mips
1494     mips64
1495     parisc
1496     ppc
1497     ppc64
1498     s390
1499     sh4
1500     sparc
1501     sparc64
1502     tilegx
1503     tilepro
1504     tomi
1505     x86
1506     x86_32
1507     x86_64
1508 "
1509
1510 ARCH_EXT_LIST_ARM="
1511     armv5te
1512     armv6
1513     armv6t2
1514     armv8
1515     neon
1516     vfp
1517     vfpv3
1518 "
1519
1520 ARCH_EXT_LIST_MIPS="
1521     mipsfpu
1522     mips32r2
1523     mipsdspr1
1524     mipsdspr2
1525 "
1526
1527 ARCH_EXT_LIST_X86_SIMD="
1528     amd3dnow
1529     amd3dnowext
1530     avx
1531     avx2
1532     fma3
1533     fma4
1534     mmx
1535     mmxext
1536     sse
1537     sse2
1538     sse3
1539     sse4
1540     sse42
1541     ssse3
1542     xop
1543 "
1544
1545 ARCH_EXT_LIST_PPC="
1546     altivec
1547     dcbzl
1548     ldbrx
1549     ppc4xx
1550 "
1551
1552 ARCH_EXT_LIST_X86="
1553     $ARCH_EXT_LIST_X86_SIMD
1554     cpunop
1555     i686
1556 "
1557
1558 ARCH_EXT_LIST="
1559     $ARCH_EXT_LIST_ARM
1560     $ARCH_EXT_LIST_PPC
1561     $ARCH_EXT_LIST_X86
1562     $ARCH_EXT_LIST_MIPS
1563     loongson
1564 "
1565
1566 ARCH_FEATURES="
1567     aligned_stack
1568     fast_64bit
1569     fast_clz
1570     fast_cmov
1571     local_aligned_8
1572     local_aligned_16
1573     local_aligned_32
1574 "
1575
1576 BUILTIN_LIST="
1577     atomic_cas_ptr
1578     machine_rw_barrier
1579     MemoryBarrier
1580     mm_empty
1581     rdtsc
1582     sarestart
1583     sync_val_compare_and_swap
1584 "
1585 HAVE_LIST_CMDLINE="
1586     inline_asm
1587     symver
1588     yasm
1589 "
1590
1591 HAVE_LIST_PUB="
1592     bigendian
1593     fast_unaligned
1594     incompatible_libav_abi
1595 "
1596
1597 HEADERS_LIST="
1598     alsa_asoundlib_h
1599     altivec_h
1600     arpa_inet_h
1601     asm_types_h
1602     cdio_paranoia_h
1603     cdio_paranoia_paranoia_h
1604     CL_cl_h
1605     dev_bktr_ioctl_bt848_h
1606     dev_bktr_ioctl_meteor_h
1607     dev_ic_bt8xx_h
1608     dev_video_bktr_ioctl_bt848_h
1609     dev_video_meteor_ioctl_meteor_h
1610     direct_h
1611     dlfcn_h
1612     dxva_h
1613     ES2_gl_h
1614     gsm_h
1615     io_h
1616     mach_mach_time_h
1617     machine_ioctl_bt848_h
1618     machine_ioctl_meteor_h
1619     malloc_h
1620     openjpeg_1_5_openjpeg_h
1621     OpenGL_gl3_h
1622     poll_h
1623     sndio_h
1624     soundcard_h
1625     sys_mman_h
1626     sys_param_h
1627     sys_resource_h
1628     sys_select_h
1629     sys_soundcard_h
1630     sys_time_h
1631     sys_un_h
1632     sys_videoio_h
1633     termios_h
1634     unistd_h
1635     windows_h
1636     winsock2_h
1637 "
1638
1639 MATH_FUNCS="
1640     atanf
1641     atan2f
1642     cbrt
1643     cbrtf
1644     cosf
1645     exp2
1646     exp2f
1647     expf
1648     isinf
1649     isnan
1650     ldexpf
1651     llrint
1652     llrintf
1653     log2
1654     log2f
1655     log10f
1656     lrint
1657     lrintf
1658     powf
1659     rint
1660     round
1661     roundf
1662     sinf
1663     trunc
1664     truncf
1665 "
1666
1667 SYSTEM_FUNCS="
1668     access
1669     aligned_malloc
1670     clock_gettime
1671     closesocket
1672     CommandLineToArgvW
1673     CoTaskMemFree
1674     CryptGenRandom
1675     dlopen
1676     fcntl
1677     flt_lim
1678     fork
1679     getaddrinfo
1680     gethrtime
1681     getopt
1682     GetProcessAffinityMask
1683     GetProcessMemoryInfo
1684     GetProcessTimes
1685     getrusage
1686     getservbyport
1687     GetSystemTimeAsFileTime
1688     gettimeofday
1689     glob
1690     glXGetProcAddress
1691     inet_aton
1692     isatty
1693     jack_port_get_latency_range
1694     kbhit
1695     localtime_r
1696     lzo1x_999_compress
1697     mach_absolute_time
1698     MapViewOfFile
1699     memalign
1700     mkstemp
1701     mmap
1702     mprotect
1703     nanosleep
1704     PeekNamedPipe
1705     posix_memalign
1706     pthread_cancel
1707     sched_getaffinity
1708     SetConsoleTextAttribute
1709     setmode
1710     setrlimit
1711     Sleep
1712     strerror_r
1713     sysconf
1714     sysctl
1715     usleep
1716     VirtualAlloc
1717     wglGetProcAddress
1718 "
1719
1720 TOOLCHAIN_FEATURES="
1721     asm_mod_q
1722     attribute_may_alias
1723     attribute_packed
1724     ebp_available
1725     ebx_available
1726     gnu_as
1727     gnu_windres
1728     ibm_asm
1729     inline_asm_labels
1730     inline_asm_nonlocal_labels
1731     inline_asm_direct_symbol_refs
1732     pragma_deprecated
1733     rsync_contimeout
1734     symver_asm_label
1735     symver_gnu_asm
1736     vfp_args
1737     xform_asm
1738     xmm_clobbers
1739 "
1740
1741 TYPES_LIST="
1742     socklen_t
1743     struct_addrinfo
1744     struct_group_source_req
1745     struct_ip_mreq_source
1746     struct_ipv6_mreq
1747     struct_pollfd
1748     struct_rusage_ru_maxrss
1749     struct_sctp_event_subscribe
1750     struct_sockaddr_in6
1751     struct_sockaddr_sa_len
1752     struct_sockaddr_storage
1753     struct_stat_st_mtim_tv_nsec
1754     struct_v4l2_frmivalenum_discrete
1755 "
1756
1757 HAVE_LIST="
1758     $ARCH_EXT_LIST
1759     $(add_suffix _external $ARCH_EXT_LIST)
1760     $(add_suffix _inline   $ARCH_EXT_LIST)
1761     $ARCH_FEATURES
1762     $ATOMICS_LIST
1763     $BUILTIN_LIST
1764     $HAVE_LIST_CMDLINE
1765     $HAVE_LIST_PUB
1766     $HEADERS_LIST
1767     $MATH_FUNCS
1768     $SYSTEM_FUNCS
1769     $THREADS_LIST
1770     $TOOLCHAIN_FEATURES
1771     $TYPES_LIST
1772     atomics_native
1773     dos_paths
1774     dxva2api_cobj
1775     dxva2_lib
1776     libc_msvcrt
1777     libdc1394_1
1778     libdc1394_2
1779     makeinfo
1780     perl
1781     pod2man
1782     sdl
1783     texi2html
1784     threads
1785     vdpau_x11
1786     xlib
1787 "
1788
1789 # options emitted with CONFIG_ prefix but not available on the command line
1790 CONFIG_EXTRA="
1791     aandcttables
1792     ac3dsp
1793     audio_frame_queue
1794     cabac
1795     dsputil
1796     exif
1797     frame_thread_encoder
1798     gcrypt
1799     golomb
1800     gplv3
1801     h263dsp
1802     h264chroma
1803     h264dsp
1804     h264pred
1805     h264qpel
1806     hpeldsp
1807     huffman
1808     huffyuvdsp
1809     huffyuvencdsp
1810     intrax8
1811     lgplv3
1812     llviddsp
1813     lpc
1814     mpegaudio
1815     mpegaudiodsp
1816     mpegvideo
1817     mpegvideoenc
1818     nettle
1819     qpeldsp
1820     rangecoder
1821     riffdec
1822     riffenc
1823     rtpdec
1824     rtpenc_chain
1825     sinewin
1826     tpeldsp
1827     videodsp
1828     vp3dsp
1829 "
1830
1831 CMDLINE_SELECT="
1832     $ARCH_EXT_LIST
1833     $CONFIG_LIST
1834     $HAVE_LIST_CMDLINE
1835     $THREADS_LIST
1836     asm
1837     cross_compile
1838     debug
1839     extra_warnings
1840     logging
1841     lto
1842     optimizations
1843     rpath
1844     stripping
1845 "
1846
1847 PATHS_LIST="
1848     bindir
1849     datadir
1850     docdir
1851     incdir
1852     libdir
1853     mandir
1854     prefix
1855     shlibdir
1856 "
1857
1858 CMDLINE_SET="
1859     $PATHS_LIST
1860     ar
1861     arch
1862     as
1863     assert_level
1864     build_suffix
1865     cc
1866     cpu
1867     cross_prefix
1868     cxx
1869     dep_cc
1870     extra_version
1871     gas
1872     host_cc
1873     host_cflags
1874     host_ld
1875     host_ldflags
1876     host_libs
1877     host_os
1878     install
1879     ld
1880     logfile
1881     malloc_prefix
1882     nm
1883     optflags
1884     pkg_config
1885     pkg_config_flags
1886     progs_suffix
1887     random_seed
1888     ranlib
1889     samples
1890     strip
1891     sysinclude
1892     sysroot
1893     target_exec
1894     target_os
1895     target_path
1896     target_samples
1897     tempprefix
1898     toolchain
1899     valgrind
1900     yasmexe
1901 "
1902
1903 CMDLINE_APPEND="
1904     extra_cflags
1905     extra_cxxflags
1906     host_cppflags
1907 "
1908
1909 # code dependency declarations
1910
1911 # architecture extensions
1912
1913 armv5te_deps="arm"
1914 armv6_deps="arm"
1915 armv6t2_deps="arm"
1916 armv8_deps="aarch64"
1917 neon_deps_any="aarch64 arm"
1918 vfp_deps_any="aarch64 arm"
1919 vfpv3_deps="vfp"
1920
1921 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1922
1923 mipsfpu_deps="mips"
1924 mips32r2_deps="mips"
1925 mipsdspr1_deps="mips"
1926 mipsdspr2_deps="mips"
1927
1928 altivec_deps="ppc"
1929 ppc4xx_deps="ppc"
1930
1931 cpunop_deps="i686"
1932 x86_64_select="i686"
1933 x86_64_suggest="fast_cmov"
1934
1935 amd3dnow_deps="mmx"
1936 amd3dnowext_deps="amd3dnow"
1937 i686_deps="x86"
1938 mmx_deps="x86"
1939 mmxext_deps="mmx"
1940 sse_deps="mmxext"
1941 sse2_deps="sse"
1942 sse3_deps="sse2"
1943 ssse3_deps="sse3"
1944 sse4_deps="ssse3"
1945 sse42_deps="sse4"
1946 avx_deps="sse42"
1947 xop_deps="avx"
1948 fma3_deps="avx"
1949 fma4_deps="avx"
1950 avx2_deps="avx"
1951
1952 mmx_external_deps="yasm"
1953 mmx_inline_deps="inline_asm"
1954 mmx_suggest="mmx_external mmx_inline"
1955
1956 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1957     eval dep=\$${ext}_deps
1958     eval ${ext}_external_deps='"${dep}_external"'
1959     eval ${ext}_inline_deps='"${dep}_inline"'
1960     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1961 done
1962
1963 aligned_stack_if_any="aarch64 ppc x86"
1964 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1965 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1966 fast_unaligned_if_any="aarch64 ppc x86"
1967
1968 need_memalign="altivec neon sse"
1969
1970 # system capabilities
1971
1972 symver_if_any="symver_asm_label symver_gnu_asm"
1973
1974 # threading support
1975 atomics_gcc_if="sync_val_compare_and_swap"
1976 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1977 atomics_win32_if="MemoryBarrier"
1978 atomics_native_if_any="$ATOMICS_LIST"
1979 w32threads_deps="atomics_native"
1980 threads_if_any="$THREADS_LIST"
1981
1982 # subsystems
1983 dct_select="rdft"
1984 error_resilience_select="dsputil"
1985 frame_thread_encoder_deps="encoders threads"
1986 mdct_select="fft"
1987 rdft_select="fft"
1988 mpegaudio_select="mpegaudiodsp"
1989 mpegaudiodsp_select="dct"
1990 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1991 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
1992
1993 # decoders / encoders
1994 aac_decoder_select="mdct sinewin"
1995 aac_encoder_select="audio_frame_queue mdct sinewin"
1996 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1997 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1998 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
1999 ac3_encoder_select="mdct ac3dsp dsputil"
2000 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
2001 aic_decoder_select="dsputil golomb"
2002 alac_encoder_select="lpc"
2003 als_decoder_select="dsputil"
2004 amrnb_decoder_select="lsp"
2005 amrwb_decoder_select="lsp"
2006 amv_decoder_select="sp5x_decoder exif"
2007 amv_encoder_select="aandcttables"
2008 ape_decoder_select="dsputil"
2009 asv1_decoder_select="dsputil"
2010 asv1_encoder_select="dsputil"
2011 asv2_decoder_select="dsputil"
2012 asv2_encoder_select="dsputil"
2013 atrac1_decoder_select="mdct sinewin"
2014 atrac3_decoder_select="mdct"
2015 atrac3p_decoder_select="mdct sinewin"
2016 avrn_decoder_select="exif"
2017 bink_decoder_select="dsputil hpeldsp"
2018 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2019 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2020 cavs_decoder_select="dsputil golomb h264chroma qpeldsp videodsp"
2021 cllc_decoder_select="dsputil"
2022 comfortnoise_encoder_select="lpc"
2023 cook_decoder_select="dsputil mdct sinewin"
2024 cscd_decoder_select="lzo"
2025 cscd_decoder_suggest="zlib"
2026 dca_decoder_select="mdct"
2027 dirac_decoder_select="dsputil dwt golomb videodsp"
2028 dnxhd_decoder_select="dsputil"
2029 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
2030 dvvideo_decoder_select="dsputil"
2031 dvvideo_encoder_select="dsputil"
2032 dxa_decoder_select="zlib"
2033 eac3_decoder_select="ac3_decoder"
2034 eac3_encoder_select="ac3_encoder"
2035 eamad_decoder_select="aandcttables dsputil mpegvideo"
2036 eatgq_decoder_select="aandcttables"
2037 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
2038 exr_decoder_select="zlib"
2039 ffv1_decoder_select="golomb rangecoder"
2040 ffv1_encoder_select="rangecoder"
2041 ffvhuff_decoder_select="huffyuv_decoder"
2042 ffvhuff_encoder_select="huffyuv_encoder"
2043 fic_decoder_select="golomb"
2044 flac_decoder_select="golomb"
2045 flac_encoder_select="dsputil golomb lpc"
2046 flashsv_decoder_select="zlib"
2047 flashsv_encoder_select="zlib"
2048 flashsv2_encoder_select="zlib"
2049 flashsv2_decoder_select="zlib"
2050 flv_decoder_select="h263_decoder"
2051 flv_encoder_select="h263_encoder"
2052 fourxm_decoder_select="dsputil"
2053 fraps_decoder_select="dsputil huffman"
2054 g2m_decoder_select="dsputil zlib"
2055 g729_decoder_select="dsputil"
2056 h261_decoder_select="error_resilience mpegvideo"
2057 h261_encoder_select="aandcttables mpegvideoenc"
2058 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo qpeldsp"
2059 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2060 h263i_decoder_select="h263_decoder"
2061 h263p_encoder_select="h263_encoder"
2062 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2063 h264_decoder_suggest="error_resilience"
2064 hevc_decoder_select="cabac dsputil golomb videodsp"
2065 huffyuv_decoder_select="dsputil huffyuvdsp llviddsp"
2066 huffyuv_encoder_select="dsputil huffman huffyuvencdsp llviddsp"
2067 iac_decoder_select="imc_decoder"
2068 imc_decoder_select="dsputil fft mdct sinewin"
2069 indeo3_decoder_select="hpeldsp"
2070 interplay_video_decoder_select="hpeldsp"
2071 jpegls_decoder_select="golomb mjpeg_decoder"
2072 jpegls_encoder_select="golomb"
2073 jv_decoder_select="dsputil"
2074 lagarith_decoder_select="huffyuvdsp"
2075 ljpeg_encoder_select="aandcttables mpegvideoenc"
2076 loco_decoder_select="golomb"
2077 mdec_decoder_select="dsputil error_resilience mpegvideo"
2078 metasound_decoder_select="lsp mdct sinewin"
2079 mimic_decoder_select="dsputil hpeldsp"
2080 mjpeg_decoder_select="dsputil hpeldsp exif"
2081 mjpeg_encoder_select="aandcttables mpegvideoenc"
2082 mjpegb_decoder_select="mjpeg_decoder"
2083 mlp_decoder_select="mlp_parser"
2084 motionpixels_decoder_select="dsputil"
2085 mp1_decoder_select="mpegaudio"
2086 mp1float_decoder_select="mpegaudio"
2087 mp2_decoder_select="mpegaudio"
2088 mp2float_decoder_select="mpegaudio"
2089 mp3_decoder_select="mpegaudio"
2090 mp3adu_decoder_select="mpegaudio"
2091 mp3adufloat_decoder_select="mpegaudio"
2092 mp3float_decoder_select="mpegaudio"
2093 mp3on4_decoder_select="mpegaudio"
2094 mp3on4float_decoder_select="mpegaudio"
2095 mpc7_decoder_select="dsputil mpegaudiodsp"
2096 mpc8_decoder_select="mpegaudiodsp"
2097 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2098 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2099 mpeg1video_decoder_select="error_resilience mpegvideo"
2100 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2101 mpeg2video_decoder_select="error_resilience mpegvideo"
2102 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2103 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2104 mpeg4_encoder_select="h263_encoder"
2105 msmpeg4v1_decoder_select="h263_decoder"
2106 msmpeg4v2_decoder_select="h263_decoder"
2107 msmpeg4v2_encoder_select="h263_encoder"
2108 msmpeg4v3_decoder_select="h263_decoder"
2109 msmpeg4v3_encoder_select="h263_encoder"
2110 mss2_decoder_select="error_resilience qpeldsp vc1_decoder"
2111 mxpeg_decoder_select="mjpeg_decoder"
2112 nellymoser_decoder_select="mdct sinewin"
2113 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2114 nuv_decoder_select="dsputil lzo"
2115 on2avc_decoder_select="mdct"
2116 opus_decoder_deps="swresample"
2117 png_decoder_select="zlib"
2118 png_encoder_select="huffyuvencdsp zlib"
2119 prores_decoder_select="dsputil"
2120 prores_encoder_select="dsputil"
2121 qcelp_decoder_select="lsp"
2122 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2123 ra_144_encoder_select="audio_frame_queue lpc"
2124 ralf_decoder_select="golomb"
2125 rawvideo_decoder_select="dsputil"
2126 rtjpeg_decoder_select="dsputil"
2127 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2128 rv10_encoder_select="h263_encoder"
2129 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2130 rv20_encoder_select="h263_encoder"
2131 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2132 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2133 shorten_decoder_select="golomb"
2134 sipr_decoder_select="lsp"
2135 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2136 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2137 sonic_decoder_select="golomb rangecoder"
2138 sonic_encoder_select="golomb rangecoder"
2139 sonic_ls_encoder_select="golomb rangecoder"
2140 sp5x_decoder_select="mjpeg_decoder"
2141 svq1_decoder_select="hpeldsp"
2142 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2143 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2144 svq3_decoder_suggest="zlib"
2145 tak_decoder_select="dsputil"
2146 theora_decoder_select="vp3_decoder"
2147 thp_decoder_select="mjpeg_decoder"
2148 tiff_decoder_suggest="zlib"
2149 tiff_encoder_suggest="zlib"
2150 truehd_decoder_select="mlp_parser"
2151 truemotion2_decoder_select="dsputil"
2152 truespeech_decoder_select="dsputil"
2153 tscc_decoder_select="zlib"
2154 twinvq_decoder_select="mdct lsp sinewin"
2155 utvideo_decoder_select="dsputil"
2156 utvideo_encoder_select="dsputil huffman huffyuvencdsp"
2157 vble_decoder_select="huffyuvdsp"
2158 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8 qpeldsp"
2159 vc1image_decoder_select="vc1_decoder"
2160 vorbis_decoder_select="mdct"
2161 vorbis_encoder_select="mdct"
2162 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2163 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2164 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2165 vp6a_decoder_select="vp6_decoder"
2166 vp6f_decoder_select="vp6_decoder"
2167 vp7_decoder_select="h264pred videodsp"
2168 vp8_decoder_select="h264pred videodsp"
2169 vp9_decoder_select="videodsp vp9_parser"
2170 webp_decoder_select="vp8_decoder"
2171 wmapro_decoder_select="mdct sinewin"
2172 wmav1_decoder_select="mdct sinewin"
2173 wmav1_encoder_select="mdct sinewin"
2174 wmav2_decoder_select="mdct sinewin"
2175 wmav2_encoder_select="mdct sinewin"
2176 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2177 wmv1_decoder_select="h263_decoder"
2178 wmv1_encoder_select="h263_encoder"
2179 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2180 wmv2_encoder_select="h263_encoder"
2181 wmv3_decoder_select="vc1_decoder"
2182 wmv3image_decoder_select="wmv3_decoder"
2183 zerocodec_decoder_select="zlib"
2184 zlib_decoder_select="zlib"
2185 zlib_encoder_select="zlib"
2186 zmbv_decoder_select="zlib"
2187 zmbv_encoder_select="zlib"
2188
2189 # hardware accelerators
2190 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2191 dxva2_deps="dxva2api_h"
2192 vaapi_deps="va_va_h"
2193 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2194 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2195 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2196 xvmc_deps="X11_extensions_XvMClib_h"
2197
2198 h263_vaapi_hwaccel_deps="vaapi"
2199 h263_vaapi_hwaccel_select="h263_decoder"
2200 h263_vdpau_hwaccel_deps="vdpau"
2201 h263_vdpau_hwaccel_select="h263_decoder"
2202 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2203 h264_dxva2_hwaccel_deps="dxva2"
2204 h264_dxva2_hwaccel_select="h264_decoder"
2205 h264_vaapi_hwaccel_deps="vaapi"
2206 h264_vaapi_hwaccel_select="h264_decoder"
2207 h264_vda_decoder_deps="vda"
2208 h264_vda_decoder_select="h264_decoder"
2209 h264_vda_hwaccel_deps="vda"
2210 h264_vda_hwaccel_select="h264_decoder"
2211 h264_vda_old_hwaccel_deps="vda"
2212 h264_vda_old_hwaccel_select="h264_decoder"
2213 h264_vdpau_decoder_deps="vdpau"
2214 h264_vdpau_decoder_select="h264_decoder"
2215 h264_vdpau_hwaccel_deps="vdpau"
2216 h264_vdpau_hwaccel_select="h264_decoder"
2217 mpeg_vdpau_decoder_deps="vdpau"
2218 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2219 mpeg_xvmc_hwaccel_deps="xvmc"
2220 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2221 mpeg1_vdpau_decoder_deps="vdpau"
2222 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2223 mpeg1_vdpau_hwaccel_deps="vdpau"
2224 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2225 mpeg1_xvmc_hwaccel_deps="xvmc"
2226 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2227 mpeg2_crystalhd_decoder_select="crystalhd"
2228 mpeg2_dxva2_hwaccel_deps="dxva2"
2229 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2230 mpeg2_vaapi_hwaccel_deps="vaapi"
2231 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2232 mpeg2_vdpau_hwaccel_deps="vdpau"
2233 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2234 mpeg2_xvmc_hwaccel_deps="xvmc"
2235 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2236 mpeg4_crystalhd_decoder_select="crystalhd"
2237 mpeg4_vaapi_hwaccel_deps="vaapi"
2238 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2239 mpeg4_vdpau_decoder_deps="vdpau"
2240 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2241 mpeg4_vdpau_hwaccel_deps="vdpau"
2242 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2243 msmpeg4_crystalhd_decoder_select="crystalhd"
2244 vc1_crystalhd_decoder_select="crystalhd"
2245 vc1_dxva2_hwaccel_deps="dxva2"
2246 vc1_dxva2_hwaccel_select="vc1_decoder"
2247 vc1_vaapi_hwaccel_deps="vaapi"
2248 vc1_vaapi_hwaccel_select="vc1_decoder"
2249 vc1_vdpau_decoder_deps="vdpau"
2250 vc1_vdpau_decoder_select="vc1_decoder"
2251 vc1_vdpau_hwaccel_deps="vdpau"
2252 vc1_vdpau_hwaccel_select="vc1_decoder"
2253 wmv3_crystalhd_decoder_select="crystalhd"
2254 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2255 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2256 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2257 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2258
2259 # parsers
2260 h264_parser_select="h264_decoder"
2261 hevc_parser_select="hevc_decoder"
2262 mpegvideo_parser_select="error_resilience mpegvideo"
2263 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2264 vc1_parser_select="mpegvideo"
2265
2266 # external libraries
2267 libaacplus_encoder_deps="libaacplus"
2268 libcelt_decoder_deps="libcelt"
2269 libfaac_encoder_deps="libfaac"
2270 libfaac_encoder_select="audio_frame_queue"
2271 libfdk_aac_decoder_deps="libfdk_aac"
2272 libfdk_aac_encoder_deps="libfdk_aac"
2273 libfdk_aac_encoder_select="audio_frame_queue"
2274 libgme_demuxer_deps="libgme"
2275 libgsm_decoder_deps="libgsm"
2276 libgsm_encoder_deps="libgsm"
2277 libgsm_ms_decoder_deps="libgsm"
2278 libgsm_ms_encoder_deps="libgsm"
2279 libilbc_decoder_deps="libilbc"
2280 libilbc_encoder_deps="libilbc"
2281 libmodplug_demuxer_deps="libmodplug"
2282 libmp3lame_encoder_deps="libmp3lame"
2283 libmp3lame_encoder_select="audio_frame_queue"
2284 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2285 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2286 libopencore_amrnb_encoder_select="audio_frame_queue"
2287 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2288 libopenjpeg_decoder_deps="libopenjpeg"
2289 libopenjpeg_encoder_deps="libopenjpeg"
2290 libopus_decoder_deps="libopus"
2291 libopus_encoder_deps="libopus"
2292 libopus_encoder_select="audio_frame_queue"
2293 libquvi_demuxer_deps="libquvi"
2294 libschroedinger_decoder_deps="libschroedinger"
2295 libschroedinger_encoder_deps="libschroedinger"
2296 libshine_encoder_deps="libshine"
2297 libshine_encoder_select="audio_frame_queue"
2298 libspeex_decoder_deps="libspeex"
2299 libspeex_encoder_deps="libspeex"
2300 libspeex_encoder_select="audio_frame_queue"
2301 libstagefright_h264_decoder_deps="libstagefright_h264"
2302 libtheora_encoder_deps="libtheora"
2303 libtwolame_encoder_deps="libtwolame"
2304 libvo_aacenc_encoder_deps="libvo_aacenc"
2305 libvo_aacenc_encoder_select="audio_frame_queue"
2306 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2307 libvorbis_decoder_deps="libvorbis"
2308 libvorbis_encoder_deps="libvorbis"
2309 libvorbis_encoder_select="audio_frame_queue"
2310 libvpx_vp8_decoder_deps="libvpx"
2311 libvpx_vp8_encoder_deps="libvpx"
2312 libvpx_vp9_decoder_deps="libvpx"
2313 libvpx_vp9_encoder_deps="libvpx"
2314 libwavpack_encoder_deps="libwavpack"
2315 libwebp_encoder_deps="libwebp"
2316 libx264_encoder_deps="libx264"
2317 libx264rgb_encoder_deps="libx264"
2318 libx265_encoder_deps="libx265"
2319 libxavs_encoder_deps="libxavs"
2320 libxvid_encoder_deps="libxvid"
2321 libutvideo_decoder_deps="libutvideo"
2322 libutvideo_encoder_deps="libutvideo"
2323 libzvbi_teletext_decoder_deps="libzvbi"
2324
2325 # demuxers / muxers
2326 ac3_demuxer_select="ac3_parser"
2327 asf_demuxer_select="riffdec"
2328 asf_muxer_select="riffenc"
2329 asf_stream_muxer_select="asf_muxer"
2330 avi_demuxer_select="riffdec exif"
2331 avi_muxer_select="riffenc"
2332 avisynth_demuxer_deps="avisynth"
2333 avisynth_demuxer_select="riffdec"
2334 caf_demuxer_select="riffdec"
2335 dirac_demuxer_select="dirac_parser"
2336 dts_demuxer_select="dca_parser"
2337 dtshd_demuxer_select="dca_parser"
2338 dxa_demuxer_select="riffdec"
2339 eac3_demuxer_select="ac3_parser"
2340 f4v_muxer_select="mov_muxer"
2341 flac_demuxer_select="flac_parser"
2342 hds_muxer_select="flv_muxer"
2343 hls_muxer_select="mpegts_muxer"
2344 image2_alias_pix_demuxer_select="image2_demuxer"
2345 image2_brender_pix_demuxer_select="image2_demuxer"
2346 ipod_muxer_select="mov_muxer"
2347 ismv_muxer_select="mov_muxer"
2348 libnut_demuxer_deps="libnut"
2349 libnut_muxer_deps="libnut"
2350 matroska_audio_muxer_select="matroska_muxer"
2351 matroska_demuxer_select="riffdec"
2352 matroska_demuxer_suggest="bzlib lzo zlib"
2353 matroska_muxer_select="riffenc"
2354 mmf_muxer_select="riffenc"
2355 mov_demuxer_select="riffdec"
2356 mov_demuxer_suggest="zlib"
2357 mov_muxer_select="riffenc rtpenc_chain"
2358 mp3_demuxer_select="mpegaudio_parser"
2359 mp4_muxer_select="mov_muxer"
2360 mpegts_muxer_select="adts_muxer latm_muxer"
2361 mpegtsraw_demuxer_select="mpegts_demuxer"
2362 mxf_d10_muxer_select="mxf_muxer"
2363 nut_muxer_select="riffenc"
2364 nuv_demuxer_select="riffdec"
2365 ogg_demuxer_select="golomb"
2366 psp_muxer_select="mov_muxer"
2367 rtp_demuxer_select="sdp_demuxer"
2368 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2369 rtsp_demuxer_select="http_protocol rtpdec"
2370 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2371 sap_demuxer_select="sdp_demuxer"
2372 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2373 sdp_demuxer_select="rtpdec"
2374 smoothstreaming_muxer_select="ismv_muxer"
2375 spdif_muxer_select="aac_parser"
2376 tak_demuxer_select="tak_parser"
2377 tg2_muxer_select="mov_muxer"
2378 tgp_muxer_select="mov_muxer"
2379 vobsub_demuxer_select="mpegps_demuxer"
2380 w64_demuxer_select="wav_demuxer"
2381 w64_muxer_select="wav_muxer"
2382 wav_demuxer_select="riffdec"
2383 wav_muxer_select="riffenc"
2384 webm_muxer_select="riffenc"
2385 wtv_demuxer_select="riffdec"
2386 wtv_muxer_select="riffenc"
2387 xmv_demuxer_select="riffdec"
2388 xwma_demuxer_select="riffdec"
2389
2390 # indevs / outdevs
2391 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2392 alsa_outdev_deps="alsa_asoundlib_h"
2393 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2394 avfoundation_indev_select="avfoundation"
2395 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2396 caca_outdev_deps="libcaca"
2397 decklink_outdev_deps="decklink pthreads"
2398 decklink_outdev_extralibs="-lstdc++"
2399 dshow_indev_deps="IBaseFilter"
2400 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2401 dv1394_indev_deps="dv1394"
2402 dv1394_indev_select="dv_demuxer"
2403 fbdev_indev_deps="linux_fb_h"
2404 fbdev_outdev_deps="linux_fb_h"
2405 gdigrab_indev_deps="CreateDIBSection"
2406 gdigrab_indev_extralibs="-lgdi32"
2407 gdigrab_indev_select="bmp_decoder"
2408 iec61883_indev_deps="libiec61883"
2409 jack_indev_deps="jack_jack_h sem_timedwait"
2410 lavfi_indev_deps="avfilter"
2411 libcdio_indev_deps="libcdio"
2412 libdc1394_indev_deps="libdc1394"
2413 libv4l2_indev_deps="libv4l2"
2414 openal_indev_deps="openal"
2415 opengl_outdev_deps="opengl"
2416 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2417 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2418 pulse_indev_deps="libpulse"
2419 pulse_outdev_deps="libpulse"
2420 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2421 qtkit_indev_select="qtkit"
2422 sdl_outdev_deps="sdl"
2423 sndio_indev_deps="sndio_h"
2424 sndio_outdev_deps="sndio_h"
2425 v4l_indev_deps="linux_videodev_h"
2426 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2427 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2428 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2429 vfwcap_indev_extralibs="-lavicap32"
2430 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2431 xv_outdev_extralibs="-lXv -lX11 -lXext"
2432 x11grab_indev_deps="x11grab"
2433
2434 # protocols
2435 bluray_protocol_deps="libbluray"
2436 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2437 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2438 ffrtmpcrypt_protocol_select="tcp_protocol"
2439 ffrtmphttp_protocol_deps="!librtmp_protocol"
2440 ffrtmphttp_protocol_select="http_protocol"
2441 ftp_protocol_select="tcp_protocol"
2442 gopher_protocol_select="network"
2443 http_protocol_select="tcp_protocol"
2444 httpproxy_protocol_select="tcp_protocol"
2445 https_protocol_select="tls_protocol"
2446 librtmp_protocol_deps="librtmp"
2447 librtmpe_protocol_deps="librtmp"
2448 librtmps_protocol_deps="librtmp"
2449 librtmpt_protocol_deps="librtmp"
2450 librtmpte_protocol_deps="librtmp"
2451 libssh_protocol_deps="libssh"
2452 mmsh_protocol_select="http_protocol"
2453 mmst_protocol_select="network"
2454 rtmp_protocol_deps="!librtmp_protocol"
2455 rtmp_protocol_select="tcp_protocol"
2456 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2457 rtmps_protocol_deps="!librtmp_protocol"
2458 rtmps_protocol_select="tls_protocol"
2459 rtmpt_protocol_select="ffrtmphttp_protocol"
2460 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2461 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2462 rtp_protocol_select="udp_protocol"
2463 sctp_protocol_deps="struct_sctp_event_subscribe"
2464 sctp_protocol_select="network"
2465 srtp_protocol_select="rtp_protocol"
2466 tcp_protocol_select="network"
2467 tls_protocol_deps_any="openssl gnutls"
2468 tls_protocol_select="tcp_protocol"
2469 udp_protocol_select="network"
2470 unix_protocol_deps="sys_un_h"
2471 unix_protocol_select="network"
2472
2473 # filters
2474 aconvert_filter_deps="swresample"
2475 amovie_filter_deps="avcodec avformat"
2476 aresample_filter_deps="swresample"
2477 ass_filter_deps="libass"
2478 asyncts_filter_deps="avresample"
2479 atempo_filter_deps="avcodec"
2480 atempo_filter_select="rdft"
2481 azmq_filter_deps="libzmq"
2482 blackframe_filter_deps="gpl"
2483 boxblur_filter_deps="gpl"
2484 bs2b_filter_deps="libbs2b"
2485 colormatrix_filter_deps="gpl"
2486 cropdetect_filter_deps="gpl"
2487 dctdnoiz_filter_deps="avcodec"
2488 dctdnoiz_filter_select="dct"
2489 delogo_filter_deps="gpl"
2490 deshake_filter_deps="avcodec"
2491 deshake_filter_select="dsputil"
2492 drawtext_filter_deps="libfreetype"
2493 ebur128_filter_deps="gpl"
2494 flite_filter_deps="libflite"
2495 frei0r_filter_deps="frei0r dlopen"
2496 frei0r_filter_extralibs='$ldl'
2497 frei0r_src_filter_deps="frei0r dlopen"
2498 frei0r_src_filter_extralibs='$ldl'
2499 geq_filter_deps="gpl"
2500 histeq_filter_deps="gpl"
2501 hqdn3d_filter_deps="gpl"
2502 interlace_filter_deps="gpl"
2503 kerndeint_filter_deps="gpl"
2504 ladspa_filter_deps="ladspa dlopen"
2505 ladspa_filter_extralibs='$ldl'
2506 mcdeint_filter_deps="avcodec gpl"
2507 movie_filter_deps="avcodec avformat"
2508 mp_filter_deps="gpl avcodec swscale inline_asm"
2509 mpdecimate_filter_deps="gpl avcodec"
2510 mptestsrc_filter_deps="gpl"
2511 negate_filter_deps="lut_filter"
2512 perspective_filter_deps="gpl"
2513 ocv_filter_deps="libopencv"
2514 owdenoise_filter_deps="gpl"
2515 pan_filter_deps="swresample"
2516 phase_filter_deps="gpl"
2517 pp_filter_deps="gpl postproc"
2518 pullup_filter_deps="gpl"
2519 removelogo_filter_deps="avcodec avformat swscale"
2520 resample_filter_deps="avresample"
2521 sab_filter_deps="gpl swscale"
2522 scale_filter_deps="swscale"
2523 smartblur_filter_deps="gpl swscale"
2524 showspectrum_filter_deps="avcodec"
2525 showspectrum_filter_select="rdft"
2526 spp_filter_deps="gpl avcodec"
2527 spp_filter_select="fft"
2528 stereo3d_filter_deps="gpl"
2529 subtitles_filter_deps="avformat avcodec libass"
2530 super2xsai_filter_deps="gpl"
2531 tinterlace_filter_deps="gpl"
2532 vidstabdetect_filter_deps="libvidstab"
2533 vidstabtransform_filter_deps="libvidstab"
2534 pixfmts_super2xsai_test_deps="super2xsai_filter"
2535 tinterlace_merge_test_deps="tinterlace_filter"
2536 tinterlace_pad_test_deps="tinterlace_filter"
2537 zmq_filter_deps="libzmq"
2538
2539 # examples
2540 avio_reading="avformat avcodec avutil"
2541 avcodec_example_deps="avcodec avutil"
2542 demuxing_decoding_example_deps="avcodec avformat avutil"
2543 filter_audio_example_deps="avfilter avutil"
2544 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2545 filtering_video_example_deps="avfilter avcodec avformat avutil"
2546 metadata_example_deps="avformat avutil"
2547 muxing_example_deps="avcodec avformat avutil swscale"
2548 remuxing_example_deps="avcodec avformat avutil"
2549 resampling_audio_example_deps="avutil swresample"
2550 scaling_video_example_deps="avutil swscale"
2551 transcode_aac_example_deps="avcodec avformat swresample"
2552 transcoding_example_deps="avfilter avcodec avformat avutil"
2553
2554 # libraries, in linking order
2555 avcodec_deps="avutil"
2556 avdevice_deps="avformat avcodec avutil"
2557 avfilter_deps="avutil"
2558 avformat_deps="avcodec avutil"
2559 avresample_deps="avutil"
2560 postproc_deps="avutil gpl"
2561 swresample_deps="avutil"
2562 swscale_deps="avutil"
2563
2564 # programs
2565 ffmpeg_deps="avcodec avfilter avformat swresample"
2566 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2567                null_filter
2568                setpts_filter trim_filter"
2569 ffplay_deps="avcodec avformat swscale swresample sdl"
2570 ffplay_libs='$sdl_libs'
2571 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2572 ffprobe_deps="avcodec avformat"
2573 ffserver_deps="avformat fork sarestart"
2574 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2575
2576 # documentation
2577 podpages_deps="perl"
2578 manpages_deps="perl pod2man"
2579 htmlpages_deps="perl texi2html"
2580 txtpages_deps="perl makeinfo"
2581 doc_deps_any="manpages htmlpages podpages txtpages"
2582
2583 # default parameters
2584
2585 logfile="config.log"
2586
2587 # installation paths
2588 prefix_default="/usr/local"
2589 bindir_default='${prefix}/bin'
2590 datadir_default='${prefix}/share/ffmpeg'
2591 docdir_default='${prefix}/share/doc/ffmpeg'
2592 incdir_default='${prefix}/include'
2593 libdir_default='${prefix}/lib'
2594 mandir_default='${prefix}/share/man'
2595 shlibdir_default="$libdir_default"
2596
2597 # toolchain
2598 ar_default="ar"
2599 cc_default="gcc"
2600 cxx_default="g++"
2601 host_cc_default="gcc"
2602 cp_f="cp -f"
2603 install="install"
2604 ln_s="ln -s -f"
2605 nm_default="nm -g"
2606 objformat="elf"
2607 pkg_config_default=pkg-config
2608 ranlib_default="ranlib"
2609 strip_default="strip"
2610 yasmexe_default="yasm"
2611 windres_default="windres"
2612
2613 nogas=":"
2614
2615 # OS
2616 target_os_default=$(tolower $(uname -s))
2617 host_os=$target_os_default
2618
2619 # machine
2620 if test "$target_os_default" = aix; then
2621     arch_default=$(uname -p)
2622 else
2623     arch_default=$(uname -m)
2624 fi
2625 cpu="generic"
2626
2627 # configurable options
2628 enable $PROGRAM_LIST
2629 enable $DOCUMENT_LIST
2630 enable $EXAMPLE_LIST
2631 enable $(filter_out avresample $LIBRARY_LIST)
2632 enable stripping
2633
2634 enable asm
2635 enable debug
2636 enable doc
2637 enable optimizations
2638 enable runtime_cpudetect
2639 enable safe_bitstream_reader
2640 enable static
2641 enable swscale_alpha
2642
2643 # Enable hwaccels by default.
2644 enable dxva2 vaapi vda vdpau xvmc
2645 enable xlib
2646
2647 # build settings
2648 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2649 LIBPREF="lib"
2650 LIBSUF=".a"
2651 FULLNAME='$(NAME)$(BUILDSUF)'
2652 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2653 SLIBPREF="lib"
2654 SLIBSUF=".so"
2655 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2656 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2657 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2658 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2659 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2660 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2661
2662 asflags_filter=echo
2663 cflags_filter=echo
2664 ldflags_filter=echo
2665
2666 AS_C='-c'
2667 AS_O='-o $@'
2668 CC_C='-c'
2669 CC_E='-E -o $@'
2670 CC_O='-o $@'
2671 CXX_C='-c'
2672 CXX_O='-o $@'
2673 LD_O='-o $@'
2674 LD_LIB='-l%'
2675 LD_PATH='-L'
2676 HOSTCC_C='-c'
2677 HOSTCC_E='-E -o $@'
2678 HOSTCC_O='-o $@'
2679 HOSTLD_O='-o $@'
2680
2681 host_libs='-lm'
2682 host_cflags_filter=echo
2683 host_ldflags_filter=echo
2684
2685 target_path='$(CURDIR)'
2686
2687 # since the object filename is not given with the -MM flag, the compiler
2688 # is only able to print the basename, and we must add the path ourselves
2689 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2690 DEPFLAGS='-MM'
2691
2692 # find source path
2693 if test -f configure; then
2694     source_path=.
2695 else
2696     source_path=$(cd $(dirname "$0"); pwd)
2697     echo "$source_path" | grep -q '[[:blank:]]' &&
2698         die "Out of tree builds are impossible with whitespace in source path."
2699     test -e "$source_path/config.h" &&
2700         die "Out of tree builds are impossible with config.h in source dir."
2701 fi
2702
2703 for v in "$@"; do
2704     r=${v#*=}
2705     l=${v%"$r"}
2706     r=$(sh_quote "$r")
2707     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2708 done
2709
2710 find_things(){
2711     thing=$1
2712     pattern=$2
2713     file=$source_path/$3
2714     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2715 }
2716
2717 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2718 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2719 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2720 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2721 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2722 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2723 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2724 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2725 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2726 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2727 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2728
2729 ALL_COMPONENTS="
2730     $BSF_LIST
2731     $DECODER_LIST
2732     $DEMUXER_LIST
2733     $ENCODER_LIST
2734     $FILTER_LIST
2735     $HWACCEL_LIST
2736     $INDEV_LIST
2737     $MUXER_LIST
2738     $OUTDEV_LIST
2739     $PARSER_LIST
2740     $PROTOCOL_LIST
2741 "
2742
2743 for n in $COMPONENT_LIST; do
2744     v=$(toupper ${n%s})_LIST
2745     eval enable \$$v
2746     eval ${n}_if_any="\$$v"
2747 done
2748
2749 enable $ARCH_EXT_LIST
2750
2751 die_unknown(){
2752     echo "Unknown option \"$1\"."
2753     echo "See $0 --help for available options."
2754     exit 1
2755 }
2756
2757 print_3_columns() {
2758     cat | tr ' ' '\n' | sort | pr -r -3 -t
2759 }
2760
2761 show_list() {
2762     suffix=_$1
2763     shift
2764     echo $* | sed s/$suffix//g | print_3_columns
2765     exit 0
2766 }
2767
2768 rand_list(){
2769     IFS=', '
2770     set -- $*
2771     unset IFS
2772     for thing; do
2773         comp=${thing%:*}
2774         prob=${thing#$comp}
2775         prob=${prob#:}
2776         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2777         echo "prob ${prob:-0.5}"
2778         printf '%s\n' $comp
2779     done
2780 }
2781
2782 do_random(){
2783     action=$1
2784     shift
2785     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2786     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2787 }
2788
2789 for opt do
2790     optval="${opt#*=}"
2791     case "$opt" in
2792         --extra-ldflags=*)
2793             add_ldflags $optval
2794         ;;
2795         --extra-libs=*)
2796             add_extralibs $optval
2797         ;;
2798         --disable-devices)
2799             disable $INDEV_LIST $OUTDEV_LIST
2800         ;;
2801         --enable-debug=*)
2802             debuglevel="$optval"
2803         ;;
2804         --disable-programs)
2805             disable $PROGRAM_LIST
2806         ;;
2807         --disable-everything)
2808             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2809         ;;
2810         --disable-all)
2811             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2812             disable $LIBRARY_LIST $PROGRAM_LIST doc
2813         ;;
2814         --enable-random|--disable-random)
2815             action=${opt%%-random}
2816             do_random ${action#--} $COMPONENT_LIST
2817         ;;
2818         --enable-random=*|--disable-random=*)
2819             action=${opt%%-random=*}
2820             do_random ${action#--} $optval
2821         ;;
2822         --enable-*=*|--disable-*=*)
2823             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2824             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2825             eval list=\$$(toupper $thing)_LIST
2826             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2827             list=$(filter "$name" $list)
2828             [ "$list" = "" ] && warn "Option $opt did not match anything"
2829             $action $list
2830         ;;
2831         --enable-?*|--disable-?*)
2832             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2833             if is_in $option $COMPONENT_LIST; then
2834                 test $action = disable && action=unset
2835                 eval $action \$$(toupper ${option%s})_LIST
2836             elif is_in $option $CMDLINE_SELECT; then
2837                 $action $option
2838             else
2839                 die_unknown $opt
2840             fi
2841         ;;
2842         --list-*)
2843             NAME="${opt#--list-}"
2844             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2845             NAME=${NAME%s}
2846             eval show_list $NAME \$$(toupper $NAME)_LIST
2847         ;;
2848         --help|-h) show_help
2849         ;;
2850         --fatal-warnings) enable fatal_warnings
2851         ;;
2852         *)
2853             optname="${opt%%=*}"
2854             optname="${optname#--}"
2855             optname=$(echo "$optname" | sed 's/-/_/g')
2856             if is_in $optname $CMDLINE_SET; then
2857                 eval $optname='$optval'
2858             elif is_in $optname $CMDLINE_APPEND; then
2859                 append $optname "$optval"
2860             else
2861                 die_unknown $opt
2862             fi
2863         ;;
2864     esac
2865 done
2866
2867 disabled logging && logfile=/dev/null
2868
2869 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2870 set >> $logfile
2871
2872 test -n "$cross_prefix" && enable cross_compile
2873
2874 if enabled cross_compile; then
2875     test -n "$arch" && test -n "$target_os" ||
2876         die "Must specify target arch and OS when cross-compiling"
2877 fi
2878
2879 ar_default="${cross_prefix}${ar_default}"
2880 cc_default="${cross_prefix}${cc_default}"
2881 cxx_default="${cross_prefix}${cxx_default}"
2882 nm_default="${cross_prefix}${nm_default}"
2883 pkg_config_default="${cross_prefix}${pkg_config_default}"
2884 ranlib_default="${cross_prefix}${ranlib_default}"
2885 strip_default="${cross_prefix}${strip_default}"
2886 windres_default="${cross_prefix}${windres_default}"
2887
2888 sysinclude_default="${sysroot}/usr/include"
2889
2890 test -n "$valgrind" && toolchain="valgrind-memcheck"
2891
2892 case "$toolchain" in
2893     clang-asan)
2894         cc_default="clang"
2895         add_cflags  -fsanitize=address
2896         add_ldflags -fsanitize=address
2897     ;;
2898     clang-tsan)
2899         cc_default="clang"
2900         add_cflags  -fsanitize=thread -pie
2901         add_ldflags -fsanitize=thread -pie
2902     ;;
2903     clang-usan)
2904         cc_default="clang"
2905         add_cflags  -fsanitize=undefined
2906         add_ldflags -fsanitize=undefined
2907     ;;
2908     gcc-asan)
2909         cc_default="gcc"
2910         add_cflags  -fsanitize=address
2911         add_ldflags -fsanitize=address
2912     ;;
2913     gcc-tsan)
2914         cc_default="gcc"
2915         add_cflags  -fsanitize=thread -pie -fPIC
2916         add_ldflags -fsanitize=thread -pie -fPIC
2917     ;;
2918     gcc-usan)
2919         cc_default="gcc"
2920         add_cflags  -fsanitize=undefined
2921         add_ldflags -fsanitize=undefined
2922     ;;
2923     valgrind-massif)
2924         target_exec_default=${valgrind:-"valgrind"}
2925         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"
2926     ;;
2927     valgrind-memcheck)
2928         target_exec_default=${valgrind:-"valgrind"}
2929         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2930     ;;
2931     msvc)
2932         # Check whether the current MSVC version needs the C99 converter.
2933         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2934         # support enough of C99 to build ffmpeg. Default to the new
2935         # behaviour if the regexp was unable to match anything, since this
2936         # successfully parses the version number of existing supported
2937         # versions that require the converter (MSVC 2010 and 2012).
2938         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2939         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2940             cc_default="cl"
2941         else
2942             cc_default="c99wrap cl"
2943         fi
2944         ld_default="link"
2945         nm_default="dumpbin -symbols"
2946         ar_default="lib"
2947         target_os_default="win32"
2948         # Use a relative path for TMPDIR. This makes sure all the
2949         # ffconf temp files are written with a relative path, avoiding
2950         # issues with msys/win32 path conversion for MSVC parameters
2951         # such as -Fo<file> or -out:<file>.
2952         TMPDIR=.
2953     ;;
2954     icl)
2955         cc_default="icl"
2956         ld_default="xilink"
2957         nm_default="dumpbin -symbols"
2958         ar_default="xilib"
2959         target_os_default="win32"
2960         TMPDIR=.
2961     ;;
2962     gcov)
2963         add_cflags  -fprofile-arcs -ftest-coverage
2964         add_ldflags -fprofile-arcs -ftest-coverage
2965     ;;
2966     hardened)
2967         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2968         add_ldflags -Wl,-z,relro -Wl,-z,now
2969     ;;
2970     ?*)
2971         die "Unknown toolchain $toolchain"
2972     ;;
2973 esac
2974
2975 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2976 enabled cross_compile || host_cc_default=$cc
2977 set_default host_cc
2978
2979 if ! $pkg_config --version >/dev/null 2>&1; then
2980     warn "$pkg_config not found, library detection may fail."
2981     pkg_config=false
2982 fi
2983
2984 exesuf() {
2985     case $1 in
2986         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2987     esac
2988 }
2989
2990 EXESUF=$(exesuf $target_os)
2991 HOSTEXESUF=$(exesuf $host_os)
2992
2993 # set temporary file name
2994 : ${TMPDIR:=$TEMPDIR}
2995 : ${TMPDIR:=$TMP}
2996 : ${TMPDIR:=/tmp}
2997
2998 if [ -n "$tempprefix" ] ; then
2999     mktemp(){
3000         echo $tempprefix.${HOSTNAME}.${UID}
3001     }
3002 elif ! check_cmd mktemp -u XXXXXX; then
3003     # simple replacement for missing mktemp
3004     # NOT SAFE FOR GENERAL USE
3005     mktemp(){
3006         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3007     }
3008 fi
3009
3010 tmpfile(){
3011     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3012         (set -C; exec > $tmp) 2>/dev/null ||
3013         die "Unable to create temporary file in $TMPDIR."
3014     append TMPFILES $tmp
3015     eval $1=$tmp
3016 }
3017
3018 trap 'rm -f -- $TMPFILES' EXIT
3019
3020 tmpfile TMPASM .asm
3021 tmpfile TMPC   .c
3022 tmpfile TMPCPP .cpp
3023 tmpfile TMPE   $EXESUF
3024 tmpfile TMPH   .h
3025 tmpfile TMPM   .m
3026 tmpfile TMPO   .o
3027 tmpfile TMPS   .S
3028 tmpfile TMPSH  .sh
3029 tmpfile TMPV   .ver
3030
3031 unset -f mktemp
3032
3033 chmod +x $TMPE
3034
3035 # make sure we can execute files in $TMPDIR
3036 cat > $TMPSH 2>> $logfile <<EOF
3037 #! /bin/sh
3038 EOF
3039 chmod +x $TMPSH >> $logfile 2>&1
3040 if ! $TMPSH >> $logfile 2>&1; then
3041     cat <<EOF
3042 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3043 variable to another directory and make sure that it is not mounted noexec.
3044 EOF
3045     die "Sanity test failed."
3046 fi
3047
3048 ccc_flags(){
3049     for flag; do
3050         case $flag in
3051             -std=c99)           echo -c99                       ;;
3052             -mcpu=*)            echo -arch ${flag#*=}           ;;
3053             -mieee)             echo -ieee                      ;;
3054             -O*|-fast)          echo $flag                      ;;
3055             -fno-math-errno)    echo -assume nomath_errno       ;;
3056             -g)                 echo -g3                        ;;
3057             -Wall)              echo -msg_enable level2         ;;
3058             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3059             -Wl,*)              echo $flag                      ;;
3060             -f*|-W*)                                            ;;
3061             *)                  echo $flag                      ;;
3062         esac
3063    done
3064 }
3065
3066 cparser_flags(){
3067     for flag; do
3068         case $flag in
3069             -Wno-switch)             echo -Wno-switch-enum ;;
3070             -Wno-format-zero-length) ;;
3071             -Wdisabled-optimization) ;;
3072             -Wno-pointer-sign)       echo -Wno-other ;;
3073             *)                       echo $flag ;;
3074         esac
3075     done
3076 }
3077
3078 msvc_common_flags(){
3079     for flag; do
3080         case $flag in
3081             # In addition to specifying certain flags under the compiler
3082             # specific filters, they must be specified here as well or else the
3083             # generic catch all at the bottom will print the original flag.
3084             -Wall)                ;;
3085             -std=c99)             ;;
3086             # Common flags
3087             -fomit-frame-pointer) ;;
3088             -g)                   echo -Z7 ;;
3089             -fno-math-errno)      ;;
3090             -fno-common)          ;;
3091             -fno-signed-zeros)    ;;
3092             -fPIC)                ;;
3093             -mthumb)              ;;
3094             -march=*)             ;;
3095             -lz)                  echo zlib.lib ;;
3096             -lavifil32)           echo vfw32.lib ;;
3097             -lavicap32)           echo vfw32.lib user32.lib ;;
3098             -l*)                  echo ${flag#-l}.lib ;;
3099             *)                    echo $flag ;;
3100         esac
3101     done
3102 }
3103
3104 msvc_flags(){
3105     msvc_common_flags "$@"
3106     for flag; do
3107         case $flag in
3108             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3109                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3110                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3111                                        -wd4554 \
3112                                        -wd4273 ;;
3113         esac
3114     done
3115 }
3116
3117 icl_flags(){
3118     msvc_common_flags "$@"
3119     for flag; do
3120         case $flag in
3121             # Despite what Intel's documentation says -Wall, which is supported
3122             # on Windows, does enable remarks so disable them here.
3123             -Wall)                echo $flag -Qdiag-disable:remark ;;
3124             -std=c99)             echo -Qstd=c99 ;;
3125         esac
3126     done
3127 }
3128
3129 icc_flags(){
3130     for flag; do
3131         case $flag in
3132             -flto)                echo -ipo ;;
3133             *)                    echo $flag ;;
3134         esac
3135     done
3136 }
3137
3138 pgi_flags(){
3139     for flag; do
3140         case $flag in
3141             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3142             -fomit-frame-pointer) echo -Mnoframe ;;
3143             -g)                   echo -gopt ;;
3144             *)                    echo $flag ;;
3145         esac
3146     done
3147 }
3148
3149 suncc_flags(){
3150     for flag; do
3151         case $flag in
3152             -march=*|-mcpu=*)
3153                 case "${flag#*=}" in
3154                     native)                   echo -xtarget=native       ;;
3155                     v9|niagara)               echo -xarch=sparc          ;;
3156                     ultrasparc)               echo -xarch=sparcvis       ;;
3157                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3158                     i586|pentium)             echo -xchip=pentium        ;;
3159                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3160                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3161                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3162                     pentium4*)          echo -xtarget=pentium4           ;;
3163                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3164                     *-sse3)             echo -xarch=sse3                 ;;
3165                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3166                     bonnell)                   echo -xarch=ssse3         ;;
3167                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3168                     westmere)                  echo -xtarget=westmere    ;;
3169                     silvermont)                echo -xarch=sse4_2        ;;
3170                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3171                     core-avx*|ivybridge|haswell|broadwell)
3172                                                echo -xarch=avx           ;;
3173                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3174                     btver1)                    echo -xarch=amdsse4a      ;;
3175                     btver2|bdver*)             echo -xarch=avx           ;;
3176                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3177                     k8|opteron|athlon64|athlon-fx)
3178                                                echo -xarch=sse2a         ;;
3179                     athlon*)                   echo -xarch=pentium_proa  ;;
3180                 esac
3181                 ;;
3182             -std=c99)             echo -xc99              ;;
3183             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3184             -fPIC)                echo -KPIC -xcode=pic32 ;;
3185             -W*,*)                echo $flag              ;;
3186             -f*-*|-W*|-mimpure-text)                      ;;
3187             -shared)              echo -G                 ;;
3188             *)                    echo $flag              ;;
3189         esac
3190     done
3191 }
3192
3193 tms470_flags(){
3194     for flag; do
3195         case $flag in
3196             -march=*|-mcpu=*)
3197                 case "${flag#*=}" in
3198                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3199                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3200                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3201                     armv6*|arm11*)          echo -mv=6   ;;
3202                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3203                                             echo -mv=5e  ;;
3204                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3205                 esac
3206                 ;;
3207             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3208             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3209             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3210             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3211             -msoft-float)   echo --float_support=vfplib       ;;
3212             -O[0-3]|-mf=*)  echo $flag                        ;;
3213             -g)             echo -g -mn                       ;;
3214             -pds=*)         echo $flag                        ;;
3215             -D*|-I*)        echo $flag                        ;;
3216             --gcc|--abi=*)  echo $flag                        ;;
3217             -me)            echo $flag                        ;;
3218         esac
3219     done
3220 }
3221
3222 probe_cc(){
3223     pfx=$1
3224     _cc=$2
3225
3226     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3227     unset _ld_o _ldflags _ld_lib _ld_path
3228     unset _depflags _DEPCMD _DEPFLAGS
3229     _flags_filter=echo
3230
3231     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3232         true # no-op to avoid reading stdin in following checks
3233     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3234         _type=llvm_gcc
3235         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3236         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3237         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3238         _cflags_speed='-O3'
3239         _cflags_size='-Os'
3240     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3241         _type=gcc
3242         gcc_version=$($_cc --version | head -n1)
3243         gcc_basever=$($_cc -dumpversion)
3244         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3245         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3246         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3247         if ! $_cc -dumpversion | grep -q '^2\.'; then
3248             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3249         fi
3250         _cflags_speed='-O3'
3251         _cflags_size='-Os'
3252     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3253         _type=icc
3254         _ident=$($_cc --version | head -n1)
3255         _depflags='-MMD'
3256         _cflags_speed='-O3'
3257         _cflags_size='-Os'
3258         _cflags_noopt='-O1'
3259         _flags_filter=icc_flags
3260     elif $_cc -v 2>&1 | grep -q xlc; then
3261         _type=xlc
3262         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3263         _cflags_speed='-O5'
3264         _cflags_size='-O5 -qcompact'
3265     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3266         _type=ccc
3267         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3268         _DEPFLAGS='-M'
3269         _cflags_speed='-fast'
3270         _cflags_size='-O1'
3271         _flags_filter=ccc_flags
3272     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3273         test -d "$sysroot" || die "No valid sysroot specified."
3274         _type=armcc
3275         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3276         armcc_conf="$PWD/armcc.conf"
3277         $_cc --arm_linux_configure                 \
3278              --arm_linux_config_file="$armcc_conf" \
3279              --configure_sysroot="$sysroot"        \
3280              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3281              die "Error creating armcc configuration file."
3282         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3283         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3284         as_default="${cross_prefix}gcc"
3285         _depflags='-MMD'
3286         _cflags_speed='-O3'
3287         _cflags_size='-Os'
3288     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3289         _type=tms470
3290         _ident=$($_cc -version | head -n1 | tr -s ' ')
3291         _flags='--gcc --abi=eabi -me'
3292         _cc_e='-ppl -fe=$@'
3293         _cc_o='-fe=$@'
3294         _depflags='-ppa -ppd=$(@:.o=.d)'
3295         _cflags_speed='-O3 -mf=5'
3296         _cflags_size='-O3 -mf=2'
3297         _flags_filter=tms470_flags
3298     elif $_cc -v 2>&1 | grep -q clang; then
3299         _type=clang
3300         _ident=$($_cc --version | head -n1)
3301         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3302         _cflags_speed='-O3'
3303         _cflags_size='-Os'
3304     elif $_cc -V 2>&1 | grep -q Sun; then
3305         _type=suncc
3306         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3307         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3308         _DEPFLAGS='-xM1 -xc99'
3309         _ldflags='-std=c99'
3310         _cflags_speed='-O5'
3311         _cflags_size='-O5 -xspace'
3312         _flags_filter=suncc_flags
3313     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3314         _type=pathscale
3315         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3316         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3317         _cflags_speed='-O2'
3318         _cflags_size='-Os'
3319         _flags_filter='filter_out -Wdisabled-optimization'
3320     elif $_cc -v 2>&1 | grep -q Open64; then
3321         _type=open64
3322         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3323         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3324         _cflags_speed='-O2'
3325         _cflags_size='-Os'
3326         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3327     elif $_cc -V 2>&1 | grep -q Portland; then
3328         _type=pgi
3329         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3330         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3331         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3332         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3333         _cflags_noopt="-O"
3334         _flags_filter=pgi_flags
3335     elif $_cc 2>&1 | grep -q Microsoft; then
3336         _type=msvc
3337         _ident=$($cc 2>&1 | head -n1)
3338         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3339         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3340         _cflags_speed="-O2"
3341         _cflags_size="-O1"
3342         if $_cc 2>&1 | grep -q Linker; then
3343             _ld_o='-out:$@'
3344         else
3345             _ld_o='-Fe$@'
3346         fi
3347         _cc_o='-Fo$@'
3348         _cc_e='-P -Fi$@'
3349         _flags_filter=msvc_flags
3350         _ld_lib='lib%.a'
3351         _ld_path='-libpath:'
3352         _flags='-nologo'
3353         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3354         if [ $pfx = hostcc ]; then
3355             append _cflags -Dsnprintf=_snprintf
3356         fi
3357         disable stripping
3358     elif $_cc 2>&1 | grep -q Intel; then
3359         _type=icl
3360         _ident=$($cc 2>&1 | head -n1)
3361         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3362         # Not only is O3 broken on 13.x+ but it is slower on all previous
3363         # versions (tested) as well.
3364         _cflags_speed="-O2"
3365         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3366         if $_cc 2>&1 | grep -q Linker; then
3367             _ld_o='-out:$@'
3368         else
3369             _ld_o='-Fe$@'
3370         fi
3371         _cc_o='-Fo$@'
3372         _cc_e='-P'
3373         _flags_filter=icl_flags
3374         _ld_lib='lib%.a'
3375         _ld_path='-libpath:'
3376         # -Qdiag-error to make icl error when seeing certain unknown arguments
3377         _flags='-nologo -Qdiag-error:4044,10157'
3378         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3379         # with MSVC which enables it by default.
3380         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3381         if [ $pfx = hostcc ]; then
3382             append _cflags -Dsnprintf=_snprintf
3383         fi
3384     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3385         _type=cparser
3386         _ident=$($_cc --version | head -n1)
3387         _depflags='-MMD'
3388         _cflags_speed='-O4'
3389         _cflags_size='-O2'
3390         _flags_filter=cparser_flags
3391     fi
3392
3393     eval ${pfx}_type=\$_type
3394     eval ${pfx}_ident=\$_ident
3395 }
3396
3397 set_ccvars(){
3398     eval ${1}_C=\${_cc_c-\${${1}_C}}
3399     eval ${1}_E=\${_cc_e-\${${1}_E}}
3400     eval ${1}_O=\${_cc_o-\${${1}_O}}
3401
3402     if [ -n "$_depflags" ]; then
3403         eval ${1}_DEPFLAGS=\$_depflags
3404     else
3405         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3406         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3407         eval DEP${1}FLAGS=\$_flags
3408     fi
3409 }
3410
3411 probe_cc cc "$cc"
3412 cflags_filter=$_flags_filter
3413 cflags_speed=$_cflags_speed
3414 cflags_size=$_cflags_size
3415 cflags_noopt=$_cflags_noopt
3416 add_cflags $_flags $_cflags
3417 cc_ldflags=$_ldflags
3418 set_ccvars CC
3419
3420 probe_cc hostcc "$host_cc"
3421 host_cflags_filter=$_flags_filter
3422 add_host_cflags  $_flags $_cflags
3423 set_ccvars HOSTCC
3424
3425 test -n "$cc_type" && enable $cc_type ||
3426     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3427
3428 : ${as_default:=$cc}
3429 : ${dep_cc_default:=$cc}
3430 : ${ld_default:=$cc}
3431 : ${host_ld_default:=$host_cc}
3432 set_default ar as dep_cc ld host_ld windres
3433
3434 probe_cc as "$as"
3435 asflags_filter=$_flags_filter
3436 add_asflags $_flags $_cflags
3437 set_ccvars AS
3438
3439 probe_cc ld "$ld"
3440 ldflags_filter=$_flags_filter
3441 add_ldflags $_flags $_ldflags
3442 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3443 LD_O=${_ld_o-$LD_O}
3444 LD_LIB=${_ld_lib-$LD_LIB}
3445 LD_PATH=${_ld_path-$LD_PATH}
3446
3447 probe_cc hostld "$host_ld"
3448 host_ldflags_filter=$_flags_filter
3449 add_host_ldflags $_flags $_ldflags
3450 HOSTLD_O=${_ld_o-$HOSTLD_O}
3451
3452 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3453     probe_cc depcc "$dep_cc"
3454     CCDEP=${_DEPCMD:-$DEPCMD}
3455     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3456     DEPCCFLAGS=$_flags
3457 fi
3458
3459 if $ar 2>&1 | grep -q Microsoft; then
3460     arflags="-nologo"
3461     ar_o='-out:$@'
3462 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3463     arflags="rq"
3464     ar_o='$@'
3465 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3466     arflags='-Xany -r -c'
3467     ar_o='$@'
3468 else
3469     arflags="rc"
3470     ar_o='$@'
3471 fi
3472
3473 add_cflags $extra_cflags
3474 add_cxxflags $extra_cxxflags
3475 add_asflags $extra_cflags
3476
3477 if test -n "$sysroot"; then
3478     case "$cc_type" in
3479         gcc|llvm_gcc|clang)
3480             add_cppflags --sysroot="$sysroot"
3481             add_ldflags --sysroot="$sysroot"
3482 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3483             add_cppflags -isysroot "$sysroot"
3484             add_ldflags -isysroot "$sysroot"
3485         ;;
3486         tms470)
3487             add_cppflags -I"$sysinclude"
3488             add_ldflags  --sysroot="$sysroot"
3489         ;;
3490     esac
3491 fi
3492
3493 if test "$cpu" = host; then
3494     enabled cross_compile &&
3495         die "--cpu=host makes no sense when cross-compiling."
3496
3497     case "$cc_type" in
3498         gcc|llvm_gcc)
3499             check_native(){
3500                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3501                 sed -n "/cc1.*$1=/{
3502                             s/.*$1=\\([^ ]*\\).*/\\1/
3503                             p
3504                             q
3505                         }" $TMPE
3506             }
3507             cpu=$(check_native -march || check_native -mcpu)
3508         ;;
3509     esac
3510
3511     test "${cpu:-host}" = host &&
3512         die "--cpu=host not supported with compiler $cc"
3513 fi
3514
3515 # Deal with common $arch aliases
3516 case "$arch" in
3517     aarch64|arm64)
3518         arch="aarch64"
3519     ;;
3520     arm*|iPad*|iPhone*)
3521         arch="arm"
3522     ;;
3523     mips*|IP*)
3524         arch="mips"
3525     ;;
3526     parisc*|hppa*)
3527         arch="parisc"
3528     ;;
3529     "Power Macintosh"|ppc*|powerpc*)
3530         arch="ppc"
3531     ;;
3532     s390|s390x)
3533         arch="s390"
3534     ;;
3535     sh4|sh)
3536         arch="sh4"
3537     ;;
3538     sun4u|sparc*)
3539         arch="sparc"
3540     ;;
3541     tilegx|tile-gx)
3542         arch="tilegx"
3543     ;;
3544     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3545         arch="x86"
3546     ;;
3547 esac
3548
3549 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3550 enable $arch
3551
3552 # Add processor-specific flags
3553 if enabled aarch64; then
3554
3555     case $cpu in
3556         armv*)
3557             cpuflags="-march=$cpu"
3558         ;;
3559         *)
3560             cpuflags="-mcpu=$cpu"
3561         ;;
3562     esac
3563
3564 elif enabled alpha; then
3565
3566     cpuflags="-mcpu=$cpu"
3567
3568 elif enabled arm; then
3569
3570     check_arm_arch() {
3571         check_cpp_condition stddef.h \
3572             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3573             $cpuflags
3574     }
3575
3576     probe_arm_arch() {
3577         if   check_arm_arch 4;        then echo armv4;
3578         elif check_arm_arch 4T;       then echo armv4t;
3579         elif check_arm_arch 5;        then echo armv5;
3580         elif check_arm_arch 5E;       then echo armv5e;
3581         elif check_arm_arch 5T;       then echo armv5t;
3582         elif check_arm_arch 5TE;      then echo armv5te;
3583         elif check_arm_arch 5TEJ;     then echo armv5te;
3584         elif check_arm_arch 6;        then echo armv6;
3585         elif check_arm_arch 6J;       then echo armv6j;
3586         elif check_arm_arch 6K;       then echo armv6k;
3587         elif check_arm_arch 6Z;       then echo armv6z;
3588         elif check_arm_arch 6ZK;      then echo armv6zk;
3589         elif check_arm_arch 6T2;      then echo armv6t2;
3590         elif check_arm_arch 7;        then echo armv7;
3591         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3592         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3593         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3594         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3595         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3596         fi
3597     }
3598
3599     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3600
3601     case $cpu in
3602         armv*)
3603             cpuflags="-march=$cpu"
3604             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3605         ;;
3606         *)
3607             cpuflags="-mcpu=$cpu"
3608             case $cpu in
3609                 cortex-a*)                               subarch=armv7a  ;;
3610                 cortex-r*)                               subarch=armv7r  ;;
3611                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3612                 arm11*)                                  subarch=armv6   ;;
3613                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3614                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3615                 *)                             subarch=$(probe_arm_arch) ;;
3616             esac
3617         ;;
3618     esac
3619
3620     case "$subarch" in
3621         armv5t*)    enable fast_clz                ;;
3622         armv[6-8]*)
3623             enable fast_clz
3624             disabled fast_unaligned || enable fast_unaligned
3625             ;;
3626     esac
3627
3628 elif enabled avr32; then
3629
3630     case $cpu in
3631         ap7[02]0[0-2])
3632             subarch="avr32_ap"
3633             cpuflags="-mpart=$cpu"
3634         ;;
3635         ap)
3636             subarch="avr32_ap"
3637             cpuflags="-march=$cpu"
3638         ;;
3639         uc3[ab]*)
3640             subarch="avr32_uc"
3641             cpuflags="-mcpu=$cpu"
3642         ;;
3643         uc)
3644             subarch="avr32_uc"
3645             cpuflags="-march=$cpu"
3646         ;;
3647     esac
3648
3649 elif enabled bfin; then
3650
3651     cpuflags="-mcpu=$cpu"
3652
3653 elif enabled mips; then
3654
3655     cpuflags="-march=$cpu"
3656
3657     case $cpu in
3658         24kc)
3659             disable mipsfpu
3660             disable mipsdspr1
3661             disable mipsdspr2
3662         ;;
3663         24kf*)
3664             disable mipsdspr1
3665             disable mipsdspr2
3666         ;;
3667         24kec|34kc|1004kc)
3668             disable mipsfpu
3669             disable mipsdspr2
3670         ;;
3671         24kef*|34kf*|1004kf*)
3672             disable mipsdspr2
3673         ;;
3674         74kc)
3675             disable mipsfpu
3676         ;;
3677     esac
3678
3679 elif enabled ppc; then
3680
3681     disable ldbrx
3682
3683     case $(tolower $cpu) in
3684         601|ppc601|powerpc601)
3685             cpuflags="-mcpu=601"
3686             disable altivec
3687         ;;
3688         603*|ppc603*|powerpc603*)
3689             cpuflags="-mcpu=603"
3690             disable altivec
3691         ;;
3692         604*|ppc604*|powerpc604*)
3693             cpuflags="-mcpu=604"
3694             disable altivec
3695         ;;
3696         g3|75*|ppc75*|powerpc75*)
3697             cpuflags="-mcpu=750"
3698             disable altivec
3699         ;;
3700         g4|745*|ppc745*|powerpc745*)
3701             cpuflags="-mcpu=7450"
3702         ;;
3703         74*|ppc74*|powerpc74*)
3704             cpuflags="-mcpu=7400"
3705         ;;
3706         g5|970|ppc970|powerpc970)
3707             cpuflags="-mcpu=970"
3708         ;;
3709         power[3-7]*)
3710             cpuflags="-mcpu=$cpu"
3711         ;;
3712         cell)
3713             cpuflags="-mcpu=cell"
3714             enable ldbrx
3715         ;;
3716         e500mc)
3717             cpuflags="-mcpu=e500mc"
3718             disable altivec
3719         ;;
3720         e500v2)
3721             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3722             disable altivec
3723             disable dcbzl
3724         ;;
3725         e500)
3726             cpuflags="-mcpu=8540 -mhard-float"
3727             disable altivec
3728             disable dcbzl
3729         ;;
3730     esac
3731
3732 elif enabled sparc; then
3733
3734     case $cpu in
3735         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3736             cpuflags="-mcpu=$cpu"
3737         ;;
3738         ultrasparc*|niagara[234])
3739             cpuflags="-mcpu=$cpu"
3740         ;;
3741     esac
3742
3743 elif enabled x86; then
3744
3745     case $cpu in
3746         i[345]86|pentium)
3747             cpuflags="-march=$cpu"
3748             disable mmx
3749         ;;
3750         # targets that do NOT support nopl and conditional mov (cmov)
3751         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3752             cpuflags="-march=$cpu"
3753             disable i686
3754         ;;
3755         # targets that do support nopl and conditional mov (cmov)
3756         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3757         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3758             cpuflags="-march=$cpu"
3759             enable i686
3760             enable fast_cmov
3761         ;;
3762         # targets that do support conditional mov but on which it's slow
3763         pentium4|pentium4m|prescott|nocona)
3764             cpuflags="-march=$cpu"
3765             enable i686
3766             disable fast_cmov
3767         ;;
3768     esac
3769
3770 fi
3771
3772 if [ "$cpu" != generic ]; then
3773     add_cflags  $cpuflags
3774     add_asflags $cpuflags
3775 fi
3776
3777 # compiler sanity check
3778 check_exec <<EOF
3779 int main(void){ return 0; }
3780 EOF
3781 if test "$?" != 0; then
3782     echo "$cc is unable to create an executable file."
3783     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3784         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3785         echo "Only do this if you know what cross compiling means."
3786     fi
3787     die "C compiler test failed."
3788 fi
3789
3790 add_cppflags -D_ISOC99_SOURCE
3791 add_cxxflags -D__STDC_CONSTANT_MACROS
3792 check_cflags -std=c99
3793 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3794 #include <stdlib.h>
3795 EOF
3796 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3797 #include <stdlib.h>
3798 EOF
3799
3800 add_host_cppflags -D_ISOC99_SOURCE
3801 check_host_cflags -std=c99
3802 check_host_cflags -Wall
3803 check_host_cflags -O3
3804
3805 check_64bit(){
3806     arch32=$1
3807     arch64=$2
3808     expr=$3
3809     check_code cc "" "int test[2*($expr) - 1]" &&
3810         subarch=$arch64 || subarch=$arch32
3811 }
3812
3813 case "$arch" in
3814     aarch64|alpha|ia64)
3815         spic=$shared
3816     ;;
3817     mips)
3818         check_64bit mips mips64 '_MIPS_SIM > 1'
3819         spic=$shared
3820     ;;
3821     parisc)
3822         check_64bit parisc parisc64 'sizeof(void *) > 4'
3823         spic=$shared
3824     ;;
3825     ppc)
3826         check_64bit ppc ppc64 'sizeof(void *) > 4'
3827         spic=$shared
3828     ;;
3829     s390)
3830         check_64bit s390 s390x 'sizeof(void *) > 4'
3831         spic=$shared
3832     ;;
3833     sparc)
3834         check_64bit sparc sparc64 'sizeof(void *) > 4'
3835         spic=$shared
3836     ;;
3837     x86)
3838         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3839         if test "$subarch" = "x86_64"; then
3840             spic=$shared
3841         fi
3842     ;;
3843     ppc)
3844         check_cc <<EOF && subarch="ppc64"
3845         int test[(int)sizeof(char*) - 7];
3846 EOF
3847     ;;
3848 esac
3849
3850 enable $subarch
3851 enabled spic && enable_weak pic
3852
3853 # OS specific
3854 case $target_os in
3855     aix)
3856         SHFLAGS=-shared
3857         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3858         enabled shared && add_ldflags -Wl,-brtl
3859         ;;
3860     haiku)
3861         prefix_default="/boot/common"
3862         network_extralibs="-lnetwork"
3863         host_libs=
3864         ;;
3865     sunos)
3866         SHFLAGS='-shared -Wl,-h,$$(@F)'
3867         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3868         network_extralibs="-lsocket -lnsl"
3869         # When using suncc to build, the Solaris linker will mark
3870         # an executable with each instruction set encountered by
3871         # the Solaris assembler.  As our libraries contain their own
3872         # guards for processor-specific code, instead suppress
3873         # generation of the HWCAPS ELF section on Solaris x86 only.
3874         enabled_all suncc x86 &&
3875             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3876             add_ldflags -Wl,-M,mapfile
3877         nm_default='nm -P -g'
3878         ;;
3879     netbsd)
3880         disable symver
3881         oss_indev_extralibs="-lossaudio"
3882         oss_outdev_extralibs="-lossaudio"
3883         enabled gcc || check_ldflags -Wl,-zmuldefs
3884         ;;
3885     openbsd|bitrig)
3886         disable symver
3887         SHFLAGS='-shared'
3888         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3889         SLIB_INSTALL_LINKS=
3890         oss_indev_extralibs="-lossaudio"
3891         oss_outdev_extralibs="-lossaudio"
3892         ;;
3893     dragonfly)
3894         disable symver
3895         ;;
3896     freebsd)
3897         ;;
3898     bsd/os)
3899         add_extralibs -lpoll -lgnugetopt
3900         strip="strip -d"
3901         ;;
3902     darwin)
3903         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3904         enabled ppc && add_asflags -force_cpusubtype_ALL
3905         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3906         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3907         strip="${strip} -x"
3908         add_ldflags -Wl,-dynamic,-search_paths_first
3909         SLIBSUF=".dylib"
3910         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3911         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3912         objformat="macho"
3913         enabled x86_64 && objformat="macho64"
3914         enabled_any pic shared ||
3915             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3916         ;;
3917     mingw32*)
3918         if test $target_os = "mingw32ce"; then
3919             disable network
3920         else
3921             target_os=mingw32
3922         fi
3923         LIBTARGET=i386
3924         if enabled x86_64; then
3925             LIBTARGET="i386:x86-64"
3926         elif enabled arm; then
3927             LIBTARGET=arm-wince
3928         fi
3929         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3930         check_ldflags -Wl,--nxcompat
3931         check_ldflags -Wl,--dynamicbase
3932         shlibdir_default="$bindir_default"
3933         SLIBPREF=""
3934         SLIBSUF=".dll"
3935         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3936         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3937         dlltool="${cross_prefix}dlltool"
3938         if check_cmd lib.exe -list; then
3939             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3940             if enabled x86_64; then
3941                 LIBTARGET=x64
3942             fi
3943         elif check_cmd $dlltool --version; then
3944             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3945         fi
3946         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3947         SLIB_INSTALL_LINKS=
3948         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3949         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3950         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3951         objformat="win32"
3952         ranlib=:
3953         enable dos_paths
3954         ;;
3955     win32|win64)
3956         disable symver
3957         if enabled shared; then
3958             # Link to the import library instead of the normal static library
3959             # for shared libs.
3960             LD_LIB='%.lib'
3961             # Cannot build both shared and static libs with MSVC or icl.
3962             disable static
3963         fi
3964         shlibdir_default="$bindir_default"
3965         SLIBPREF=""
3966         SLIBSUF=".dll"
3967         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3968         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3969         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3970         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3971         SLIB_INSTALL_LINKS=
3972         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3973         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3974         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3975         objformat="win32"
3976         ranlib=:
3977         enable dos_paths
3978         ;;
3979     cygwin*)
3980         target_os=cygwin
3981         shlibdir_default="$bindir_default"
3982         SLIBPREF="cyg"
3983         SLIBSUF=".dll"
3984         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3985         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3986         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3987         SLIB_INSTALL_LINKS=
3988         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3989         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3990         objformat="win32"
3991         enable dos_paths
3992         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3993         ;;
3994     *-dos|freedos|opendos)
3995         network_extralibs="-lsocket"
3996         objformat="coff"
3997         enable dos_paths
3998         add_cppflags -U__STRICT_ANSI__
3999         ;;
4000     linux)
4001         enable dv1394
4002         ;;
4003     irix*)
4004         target_os=irix
4005         ranlib="echo ignoring ranlib"
4006         ;;
4007     os/2*)
4008         strip="lxlite -CS"
4009         ln_s="cp -f"
4010         objformat="aout"
4011         add_cppflags -D_GNU_SOURCE
4012         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4013         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4014         LIBSUF="_s.a"
4015         SLIBPREF=""
4016         SLIBSUF=".dll"
4017         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4018         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4019         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4020             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4021             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4022             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4023             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4024             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4025         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4026             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4027         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4028         enable dos_paths
4029         enable_weak os2threads
4030         ;;
4031     gnu/kfreebsd)
4032         add_cppflags -D_BSD_SOURCE
4033         ;;
4034     gnu)
4035         ;;
4036     qnx)
4037         add_cppflags -D_QNX_SOURCE
4038         network_extralibs="-lsocket"
4039         ;;
4040     symbian)
4041         SLIBSUF=".dll"
4042         enable dos_paths
4043         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4044         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4045         add_ldflags -Wl,--target1-abs,--no-undefined \
4046                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4047                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4048         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4049                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4050                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4051         ;;
4052     osf1)
4053         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4054         ;;
4055     minix)
4056         ;;
4057     plan9)
4058         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4059                      -D_REENTRANT_SOURCE        \
4060                      -D_RESEARCH_SOURCE         \
4061                      -DFD_SETSIZE=96            \
4062                      -DHAVE_SOCK_OPTS
4063         add_compat strtod.o strtod=avpriv_strtod
4064         network_extralibs='-lbsd'
4065         exeobjs=compat/plan9/main.o
4066         disable ffserver
4067         cp_f='cp'
4068         ;;
4069     none)
4070         ;;
4071     *)
4072         die "Unknown OS '$target_os'."
4073         ;;
4074 esac
4075
4076 # determine libc flavour
4077
4078 probe_libc(){
4079     pfx=$1
4080     pfx_no_=${pfx%_}
4081     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4082     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4083         eval ${pfx}libc_type=uclibc
4084         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4085     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4086         eval ${pfx}libc_type=glibc
4087         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4088     # MinGW headers can be installed on Cygwin, so check for newlib first.
4089     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4090         eval ${pfx}libc_type=newlib
4091         add_${pfx}cppflags -U__STRICT_ANSI__
4092     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4093     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4094         eval ${pfx}libc_type=mingw64
4095         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4096             add_compat msvcrt/snprintf.o
4097             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4098         fi
4099         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4100         eval test \$${pfx_no_}cc_type = "gcc" &&
4101             add_${pfx}cppflags -D__printf__=__gnu_printf__
4102     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4103          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4104         eval ${pfx}libc_type=mingw32
4105         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4106             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4107             die "ERROR: MinGW32 runtime version must be >= 3.15."
4108         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4109         eval test \$${pfx_no_}cc_type = "gcc" &&
4110             add_${pfx}cppflags -D__printf__=__gnu_printf__
4111     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4112         eval ${pfx}libc_type=msvcrt
4113         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4114         # 0x601 by default unless something else is set by the user.
4115         # This can easily lead to us detecting functions only present
4116         # in such new versions and producing binaries requiring windows 7.0.
4117         # Therefore explicitly set the default to XP unless the user has
4118         # set something else on the command line.
4119         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4120             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4121     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4122         eval ${pfx}libc_type=klibc
4123     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4124         eval ${pfx}libc_type=bionic
4125     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4126         eval ${pfx}libc_type=solaris
4127         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4128     fi
4129 }
4130
4131 probe_libc
4132 test -n "$libc_type" && enable libc_$libc_type
4133 probe_libc host_
4134 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4135
4136 case $libc_type in
4137     bionic)
4138         add_compat strtod.o strtod=avpriv_strtod
4139         ;;
4140     msvcrt)
4141         add_compat strtod.o strtod=avpriv_strtod
4142         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4143                                      _snprintf=avpriv_snprintf  \
4144                                      vsnprintf=avpriv_vsnprintf
4145         ;;
4146 esac
4147
4148 # hacks for compiler/libc/os combinations
4149
4150 if enabled_all tms470 libc_glibc; then
4151     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4152     add_cppflags -D__USER_LABEL_PREFIX__=
4153     add_cppflags -D__builtin_memset=memset
4154     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4155     add_cflags   -pds=48    # incompatible redefinition of macro
4156 fi
4157
4158 if enabled_all ccc libc_glibc; then
4159     add_ldflags -Wl,-z,now  # calls to libots crash without this
4160 fi
4161
4162 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4163     add_cppflags '-I\$(SRC_PATH)/compat/float'
4164
4165 esc(){
4166     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4167 }
4168
4169 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4170
4171 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4172
4173 set_default $PATHS_LIST
4174 set_default nm
4175
4176 # we need to build at least one lib type
4177 if ! enabled_any static shared; then
4178     cat <<EOF
4179 At least one library type must be built.
4180 Specify --enable-static to build the static libraries or --enable-shared to
4181 build the shared libraries as well. To only build the shared libraries specify
4182 --disable-static in addition to --enable-shared.
4183 EOF
4184     exit 1;
4185 fi
4186
4187 die_license_disabled() {
4188     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4189 }
4190
4191 die_license_disabled_gpl() {
4192     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4193 }
4194
4195 die_license_disabled gpl frei0r
4196 die_license_disabled gpl libcdio
4197 die_license_disabled gpl libutvideo
4198 die_license_disabled gpl libvidstab
4199 die_license_disabled gpl libx264
4200 die_license_disabled gpl libx265
4201 die_license_disabled gpl libxavs
4202 die_license_disabled gpl libxvid
4203 die_license_disabled gpl libzvbi
4204 die_license_disabled gpl x11grab
4205
4206 die_license_disabled nonfree libaacplus
4207 die_license_disabled nonfree libfaac
4208 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4209 enabled gpl && die_license_disabled_gpl nonfree openssl
4210
4211 die_license_disabled version3 libopencore_amrnb
4212 die_license_disabled version3 libopencore_amrwb
4213 die_license_disabled version3 libvo_aacenc
4214 die_license_disabled version3 libvo_amrwbenc
4215
4216 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4217
4218 disabled optimizations || check_cflags -fomit-frame-pointer
4219
4220 enable_weak_pic() {
4221     disabled pic && return
4222     enable pic
4223     add_cppflags -DPIC
4224     case "$target_os" in
4225     mingw*|cygwin*)
4226         ;;
4227     *)
4228         add_cflags -fPIC
4229         ;;
4230     esac
4231     add_asflags  -fPIC
4232 }
4233
4234 enabled pic && enable_weak_pic
4235
4236 check_cc <<EOF || die "Symbol mangling check failed."
4237 int ff_extern;
4238 EOF
4239 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4240 extern_prefix=${sym%%ff_extern*}
4241
4242 check_cc <<EOF && enable_weak inline_asm
4243 void foo(void) { __asm__ volatile ("" ::); }
4244 EOF
4245
4246 _restrict=
4247 for restrict_keyword in restrict __restrict__ __restrict; do
4248     check_cc <<EOF && _restrict=$restrict_keyword && break
4249 void foo(char * $restrict_keyword p);
4250 EOF
4251 done
4252
4253 check_cc <<EOF && enable pragma_deprecated
4254 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4255 EOF
4256
4257 check_cc <<EOF && enable attribute_packed
4258 struct { int x; } __attribute__((packed)) x;
4259 EOF
4260
4261 check_cc <<EOF && enable attribute_may_alias
4262 union { int x; } __attribute__((may_alias)) x;
4263 EOF
4264
4265 check_cc <<EOF || die "endian test failed"
4266 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4267 EOF
4268 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4269
4270 check_inline_asm inline_asm_labels '"1:\n"'
4271
4272 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4273
4274 if enabled aarch64; then
4275     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4276     # internal assembler in clang 3.3 does not support this instruction
4277     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4278     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4279
4280     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4281
4282 elif enabled alpha; then
4283
4284     check_cflags -mieee
4285
4286 elif enabled arm; then
4287
4288     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4289 float func(float a, float b){ return a+b; }
4290 EOF
4291
4292     enabled thumb && check_cflags -mthumb || check_cflags -marm
4293     nogas=die
4294
4295     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4296         enable vfp_args
4297     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4298         case "${cross_prefix:-$cc}" in
4299             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4300             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4301 __asm__ (".eabi_attribute 28, 1");
4302 int main(void) { return 0; }
4303 EOF
4304         esac
4305         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4306     fi
4307
4308     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4309     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4310     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4311     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4312     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4313     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4314
4315     [ $target_os = linux ] ||
4316         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4317             $ARCH_EXT_LIST_ARM
4318
4319     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4320
4321     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4322
4323 elif enabled mips; then
4324
4325     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4326     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4327      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4328     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4329      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4330     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4331      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4332     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4333      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4334
4335 elif enabled parisc; then
4336
4337     if enabled gcc; then
4338         case $($cc -dumpversion) in
4339             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4340         esac
4341     fi
4342
4343 elif enabled ppc; then
4344
4345     enable local_aligned_8 local_aligned_16 local_aligned_32
4346
4347     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4348     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4349     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4350     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4351
4352     # AltiVec flags: The FSF version of GCC differs from the Apple version
4353     if enabled altivec; then
4354         if ! enabled_any pic ppc64; then
4355             nogas=warn
4356         fi
4357         check_cflags -maltivec -mabi=altivec &&
4358         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4359         check_cflags -faltivec
4360
4361         # check if our compiler supports Motorola AltiVec C API
4362         check_cc <<EOF || disable altivec
4363 $inc_altivec_h
4364 int main(void) {
4365     vector signed int v1 = (vector signed int) { 0 };
4366     vector signed int v2 = (vector signed int) { 1 };
4367     v1 = vec_add(v1, v2);
4368     return 0;
4369 }
4370 EOF
4371
4372         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4373     fi
4374
4375 elif enabled x86; then
4376
4377     check_builtin rdtsc    intrin.h   "__rdtsc()"
4378     check_builtin mm_empty mmintrin.h "_mm_empty()"
4379
4380     enable local_aligned_8 local_aligned_16 local_aligned_32
4381
4382     # check whether EBP is available on x86
4383     # As 'i' is stored on the stack, this program will crash
4384     # if the base pointer is used to access it because the
4385     # base pointer is cleared in the inline assembly code.
4386     check_exec_crash <<EOF && enable ebp_available
4387 volatile int i=0;
4388 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4389 return i;
4390 EOF
4391
4392     # check whether EBX is available on x86
4393     check_inline_asm ebx_available '""::"b"(0)' &&
4394         check_inline_asm ebx_available '"":::"%ebx"'
4395
4396     # check whether xmm clobbers are supported
4397     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4398
4399     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4400         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4401
4402     # check whether binutils is new enough to compile AVX/SSSE3/MMXEXT
4403     enabled avx    && check_inline_asm avx_inline    '"vextractf128 $1, %ymm0, %xmm1"'
4404     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4405     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4406
4407     if ! disabled_any asm mmx yasm; then
4408         if check_cmd $yasmexe --version; then
4409             enabled x86_64 && yasm_extra="-m amd64"
4410             yasm_debug="-g dwarf2"
4411         elif check_cmd nasm -v; then
4412             yasmexe=nasm
4413             yasm_debug="-g -F dwarf"
4414             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4415         fi
4416
4417         YASMFLAGS="-f $objformat $yasm_extra"
4418         enabled pic               && append YASMFLAGS "-DPIC"
4419         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4420         case "$objformat" in
4421             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4422         esac
4423
4424         check_yasm "movbe ecx, [5]" && enable yasm ||
4425             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4426         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4427         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4428         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4429         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4430         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4431         check_yasm "CPU amdnop" || disable cpunop
4432     fi
4433
4434     case "$cpu" in
4435         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4436             disable fast_clz
4437         ;;
4438     esac
4439
4440 fi
4441
4442 if enabled asm; then
4443     as=${gas:=$as}
4444     check_as <<EOF && enable gnu_as || \
4445         $nogas "GNU assembler not found, install gas-preprocessor"
4446 .macro m n
4447 \n: .int 0
4448 .endm
4449 m x
4450 EOF
4451 fi
4452
4453 check_ldflags -Wl,--as-needed
4454
4455 if check_func dlopen; then
4456     ldl=
4457 elif check_func dlopen -ldl; then
4458     ldl=-ldl
4459 fi
4460
4461 if ! disabled network; then
4462     check_func getaddrinfo $network_extralibs
4463     check_func getservbyport $network_extralibs
4464     check_func inet_aton $network_extralibs
4465
4466     check_type netdb.h "struct addrinfo"
4467     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4468     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4469     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4470     check_type poll.h "struct pollfd"
4471     check_type netinet/sctp.h "struct sctp_event_subscribe"
4472     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4473     check_type netinet/in.h "struct sockaddr_in6"
4474     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4475     check_type "sys/types.h sys/socket.h" socklen_t
4476
4477     # Prefer arpa/inet.h over winsock2
4478     if check_header arpa/inet.h ; then
4479         check_func closesocket
4480     elif check_header winsock2.h ; then
4481         check_func_headers winsock2.h closesocket -lws2 &&
4482             network_extralibs="-lws2" ||
4483         { check_func_headers winsock2.h closesocket -lws2_32 &&
4484             network_extralibs="-lws2_32"; } || disable winsock2_h network
4485         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4486
4487         check_type ws2tcpip.h socklen_t
4488         check_type ws2tcpip.h "struct addrinfo"
4489         check_type ws2tcpip.h "struct group_source_req"
4490         check_type ws2tcpip.h "struct ip_mreq_source"
4491         check_type ws2tcpip.h "struct ipv6_mreq"
4492         check_type winsock2.h "struct pollfd"
4493         check_struct winsock2.h "struct sockaddr" sa_len
4494         check_type ws2tcpip.h "struct sockaddr_in6"
4495         check_type ws2tcpip.h "struct sockaddr_storage"
4496     else
4497         disable network
4498     fi
4499 fi
4500
4501 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4502 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4503 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4504 check_builtin sarestart signal.h "SA_RESTART"
4505 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4506
4507 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4508 check_func  ${malloc_prefix}memalign            && enable memalign
4509 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4510
4511 check_func  access
4512 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4513 check_func  fcntl
4514 check_func  fork
4515 check_func  gethrtime
4516 check_func  getopt
4517 check_func  getrusage
4518 check_func  gettimeofday
4519 check_func  isatty
4520 check_func  localtime_r
4521 check_func  mach_absolute_time
4522 check_func  mkstemp
4523 check_func  mmap
4524 check_func  mprotect
4525 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4526 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4527 check_func  sched_getaffinity
4528 check_func  setrlimit
4529 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4530 check_func  strerror_r
4531 check_func  sysconf
4532 check_func  sysctl
4533 check_func  usleep
4534
4535 check_func_headers conio.h kbhit
4536 check_func_headers io.h setmode
4537 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4538 check_func_headers stdlib.h getenv
4539
4540 check_func_headers windows.h CoTaskMemFree -lole32
4541 check_func_headers windows.h GetProcessAffinityMask
4542 check_func_headers windows.h GetProcessTimes
4543 check_func_headers windows.h GetSystemTimeAsFileTime
4544 check_func_headers windows.h MapViewOfFile
4545 check_func_headers windows.h PeekNamedPipe
4546 check_func_headers windows.h SetConsoleTextAttribute
4547 check_func_headers windows.h Sleep
4548 check_func_headers windows.h VirtualAlloc
4549 check_func_headers glob.h glob
4550 enabled xlib &&
4551     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4552
4553 check_header cl/cl.h
4554 check_header direct.h
4555 check_header dlfcn.h
4556 check_header dxva.h
4557 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4558 check_header io.h
4559 check_header libcrystalhd/libcrystalhd_if.h
4560 check_header mach/mach_time.h
4561 check_header malloc.h
4562 check_header poll.h
4563 check_header sys/mman.h
4564 check_header sys/param.h
4565 check_header sys/resource.h
4566 check_header sys/select.h
4567 check_header sys/time.h
4568 check_header sys/un.h
4569 check_header termios.h
4570 check_header unistd.h
4571 check_header vdpau/vdpau.h
4572 check_header vdpau/vdpau_x11.h
4573 check_header VideoDecodeAcceleration/VDADecoder.h
4574 check_header windows.h
4575 check_header X11/extensions/XvMClib.h
4576 check_header asm/types.h
4577
4578 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4579 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4580 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4581
4582 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4583
4584 if ! disabled w32threads && ! enabled pthreads; then
4585     check_func_headers "windows.h process.h" _beginthreadex &&
4586         enable w32threads || disable w32threads
4587 fi
4588
4589 # check for some common methods of building with pthread support
4590 # do this before the optional library checks as some of them require pthreads
4591 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4592     enable pthreads
4593     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4594         add_cflags -pthread
4595         add_extralibs -pthread
4596     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4597         add_cflags -pthreads
4598         add_extralibs -pthreads
4599     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4600         add_cflags -ldl -pthread
4601         add_extralibs -ldl -pthread
4602     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4603         add_extralibs -lpthreadGC2
4604     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4605         :
4606     elif ! check_func pthread_join && ! check_func pthread_create; then
4607         disable pthreads
4608     fi
4609     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4610 fi
4611
4612
4613 if enabled pthreads; then
4614   check_func pthread_cancel
4615 fi
4616
4617 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4618 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4619
4620 check_lib math.h sin -lm && LIBM="-lm"
4621 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4622
4623 atan2f_args=2
4624 ldexpf_args=2
4625 powf_args=2
4626
4627 for func in $MATH_FUNCS; do
4628     eval check_mathfunc $func \${${func}_args:-1}
4629 done
4630
4631 # these are off by default, so fail if requested and not available
4632 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4633 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4634                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4635                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4636 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4637 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4638 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4639 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4640 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4641 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4642 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4643 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4644 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4645 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4646                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4647                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4648 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4649 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4650 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4651 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"
4652 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4653 enabled fontconfig        && enable libfontconfig
4654 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4655 enabled libfreetype       && require_libfreetype
4656 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4657 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4658                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4659                                done || die "ERROR: libgsm not found"; }
4660 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4661 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4662 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4663 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4664 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4665 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4666 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4667 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4668                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4669                                die "ERROR: libopenjpeg not found"; }
4670 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4671 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4672 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4673 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4674 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4675 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4676 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4677 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4678 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4679 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4680     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4681     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4682 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4683 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4684                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4685                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4686 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4687 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4688 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4689 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4690 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4691 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4692 enabled libvpx            && {
4693     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4694                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4695     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 ||
4696                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4697     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4698     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; } }
4699 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4700 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4701 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4702                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4703                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4704 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4705                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4706                                die "ERROR: libx265 version must be >= 13."; }
4707 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4708 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4709 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4710 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4711 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4712                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4713                                die "ERROR: openal not found"; } &&
4714                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4715                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4716 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4717                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4718                                die "ERROR: opencl not found"; } &&
4719                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4720                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4721                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4722 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4723                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4724                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4725                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4726                                die "ERROR: opengl not found."
4727                              }
4728 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4729                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4730                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4731                                die "ERROR: openssl not found"; }
4732 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4733
4734 if enabled gnutls; then
4735     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4736     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4737 fi
4738
4739 # libdc1394 check
4740 if enabled libdc1394; then
4741     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4742         enable libdc1394_2; } ||
4743     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4744         enable libdc1394_1; } ||
4745     die "ERROR: No version of libdc1394 found "
4746 fi
4747
4748 SDL_CONFIG="${cross_prefix}sdl-config"
4749 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4750     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4751     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4752     enable sdl
4753 else
4754   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4755     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4756     sdl_libs=$("${SDL_CONFIG}" --libs)
4757     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4758     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4759     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4760     enable sdl
4761   fi
4762 fi
4763 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4764
4765 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4766 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4767 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4768 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4769 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4770
4771 check_header linux/fb.h
4772 check_header linux/videodev.h
4773 check_header linux/videodev2.h
4774 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4775
4776 check_header sys/videoio.h
4777
4778 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4779 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4780 # w32api 3.12 had it defined wrong
4781 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4782
4783 check_type "dshow.h" IBaseFilter
4784
4785 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4786 { check_header dev/bktr/ioctl_meteor.h &&
4787   check_header dev/bktr/ioctl_bt848.h; } ||
4788 { check_header machine/ioctl_meteor.h &&
4789   check_header machine/ioctl_bt848.h; } ||
4790 { check_header dev/video/meteor/ioctl_meteor.h &&
4791   check_header dev/video/bktr/ioctl_bt848.h; } ||
4792 check_header dev/ic/bt8xx.h
4793
4794 check_header sndio.h
4795 if check_struct sys/soundcard.h audio_buf_info bytes; then
4796     enable_safe sys/soundcard.h
4797 else
4798     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4799     #include <sys/soundcard.h>
4800     audio_buf_info abc;
4801 EOF
4802 fi
4803 check_header soundcard.h
4804
4805 enabled_any alsa_indev alsa_outdev &&
4806     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4807
4808 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4809     check_func jack_port_get_latency_range -ljack
4810
4811 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4812
4813 if enabled libcdio; then
4814     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4815     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4816     die "ERROR: libcdio-paranoia not found"
4817 fi
4818
4819 enabled xlib &&
4820     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
4821
4822 enabled x11grab                                           &&
4823 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4824 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4825 { enabled xlib || die "ERROR: Xlib not found"; }
4826
4827 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
4828
4829 enabled dxva2api_h &&
4830     check_cc <<EOF && enable dxva2api_cobj
4831 #define _WIN32_WINNT 0x0600
4832 #define COBJMACROS
4833 #include <windows.h>
4834 #include <d3d9.h>
4835 #include <dxva2api.h>
4836 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
4837 EOF
4838
4839 enabled vaapi &&
4840     check_lib va/va.h vaInitialize -lva ||
4841     disable vaapi
4842
4843 enabled vdpau &&
4844     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4845     disable vdpau
4846
4847 enabled vdpau && enabled xlib &&
4848     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4849     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
4850     enable vdpau_x11
4851
4852 # Funny iconv installations are not unusual, so check it after all flags have been set
4853 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4854
4855 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4856
4857 # add some useful compiler flags if supported
4858 check_cflags -Wdeclaration-after-statement
4859 check_cflags -Wall
4860 check_cflags -Wdisabled-optimization
4861 check_cflags -Wpointer-arith
4862 check_cflags -Wredundant-decls
4863 check_cflags -Wwrite-strings
4864 check_cflags -Wtype-limits
4865 check_cflags -Wundef
4866 check_cflags -Wmissing-prototypes
4867 check_cflags -Wno-pointer-to-int-cast
4868 check_cflags -Wstrict-prototypes
4869 check_cflags -Wempty-body
4870 enabled extra_warnings && check_cflags -Winline
4871
4872 check_disable_warning(){
4873     warning_flag=-W${1#-Wno-}
4874     test_cflags $warning_flag && add_cflags $1
4875 }
4876
4877 check_disable_warning -Wno-parentheses
4878 check_disable_warning -Wno-switch
4879 check_disable_warning -Wno-format-zero-length
4880 check_disable_warning -Wno-pointer-sign
4881
4882 # add some linker flags
4883 check_ldflags -Wl,--warn-common
4884 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4885 enabled rpath && add_ldflags -Wl,-rpath,$libdir
4886 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4887
4888 # add some strip flags
4889 # -wN '..@*' is more selective than -x, but not available everywhere.
4890 check_stripflags -wN \'..@*\' || check_stripflags -x
4891
4892 enabled neon_clobber_test &&
4893     check_ldflags -Wl,--wrap,avcodec_open2              \
4894                   -Wl,--wrap,avcodec_decode_audio4      \
4895                   -Wl,--wrap,avcodec_decode_video2      \
4896                   -Wl,--wrap,avcodec_decode_subtitle2   \
4897                   -Wl,--wrap,avcodec_encode_audio2      \
4898                   -Wl,--wrap,avcodec_encode_video2      \
4899                   -Wl,--wrap,avcodec_encode_subtitle    \
4900                   -Wl,--wrap,swr_convert                \
4901                   -Wl,--wrap,avresample_convert ||
4902     disable neon_clobber_test
4903
4904 enabled xmm_clobber_test &&
4905     check_ldflags -Wl,--wrap,avcodec_open2              \
4906                   -Wl,--wrap,avcodec_decode_audio4      \
4907                   -Wl,--wrap,avcodec_decode_video2      \
4908                   -Wl,--wrap,avcodec_decode_subtitle2   \
4909                   -Wl,--wrap,avcodec_encode_audio2      \
4910                   -Wl,--wrap,avcodec_encode_video       \
4911                   -Wl,--wrap,avcodec_encode_video2      \
4912                   -Wl,--wrap,avcodec_encode_subtitle    \
4913                   -Wl,--wrap,swr_convert                \
4914                   -Wl,--wrap,avresample_convert         \
4915                   -Wl,--wrap,sws_scale ||
4916     disable xmm_clobber_test
4917
4918 echo "X{};" > $TMPV
4919 if test_ldflags -Wl,--version-script,$TMPV; then
4920     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4921     check_cc <<EOF && enable symver_asm_label
4922 void ff_foo(void) __asm__ ("av_foo@VERSION");
4923 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4924 EOF
4925     check_cc <<EOF && enable symver_gnu_asm
4926 __asm__(".symver ff_foo,av_foo@VERSION");
4927 void ff_foo(void) {}
4928 EOF
4929 fi
4930
4931 if [ -z "$optflags" ]; then
4932     if enabled small; then
4933         optflags=$cflags_size
4934     elif enabled optimizations; then
4935         optflags=$cflags_speed
4936     else
4937         optflags=$cflags_noopt
4938     fi
4939 fi
4940
4941 check_optflags(){
4942     check_cflags "$@"
4943     enabled lto && check_ldflags "$@"
4944 }
4945
4946
4947 if enabled lto; then
4948     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4949     check_cflags  -flto
4950     check_ldflags -flto $cpuflags
4951     disable inline_asm_direct_symbol_refs
4952 fi
4953
4954 check_optflags $optflags
4955 check_optflags -fno-math-errno
4956 check_optflags -fno-signed-zeros
4957
4958 enabled ftrapv && check_cflags -ftrapv
4959
4960 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4961 int x;
4962 EOF
4963
4964
4965 if enabled icc; then
4966     # Just warnings, no remarks
4967     check_cflags -w1
4968     # -wd: Disable following warnings
4969     # 144, 167, 556: -Wno-pointer-sign
4970     # 188: enumerated type mixed with another type
4971     # 1292: attribute "foo" ignored
4972     # 1419: external declaration in primary source file
4973     # 10006: ignoring unknown option -fno-signed-zeros
4974     # 10148: ignoring unknown option -Wno-parentheses
4975     # 10156: ignoring option '-W'; no argument required
4976     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4977     # 11030: Warning unknown option --as-needed
4978     # 10156: ignoring option '-export'; no argument required
4979     check_ldflags -wd10156,11030
4980     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4981     enable ebp_available
4982     # The test above does not test linking
4983     enabled lto && disable symver_asm_label
4984     if enabled x86_32; then
4985         icc_version=$($cc -dumpversion)
4986         test ${icc_version%%.*} -ge 11 &&
4987             check_cflags -falign-stack=maintain-16-byte ||
4988             disable aligned_stack
4989     fi
4990 elif enabled ccc; then
4991     # disable some annoying warnings
4992     add_cflags -msg_disable bitnotint
4993     add_cflags -msg_disable mixfuncvoid
4994     add_cflags -msg_disable nonstandcast
4995     add_cflags -msg_disable unsupieee
4996 elif enabled gcc; then
4997     check_optflags -fno-tree-vectorize
4998     check_cflags -Werror=implicit-function-declaration
4999     check_cflags -Werror=missing-prototypes
5000     check_cflags -Werror=return-type
5001     check_cflags -Werror=vla
5002     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5003 elif enabled llvm_gcc; then
5004     check_cflags -mllvm -stack-alignment=16
5005 elif enabled clang; then
5006     check_cflags -mllvm -stack-alignment=16
5007     check_cflags -Qunused-arguments
5008     check_cflags -Werror=implicit-function-declaration
5009     check_cflags -Werror=missing-prototypes
5010     check_cflags -Werror=return-type
5011 elif enabled cparser; then
5012     add_cflags -Wno-missing-variable-declarations
5013     add_cflags -Wno-empty-statement
5014 elif enabled armcc; then
5015     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5016     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5017     # 2523: use of inline assembler is deprecated
5018     add_cflags -W${armcc_opt},--diag_suppress=2523
5019     add_cflags -W${armcc_opt},--diag_suppress=1207
5020     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5021     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5022     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5023     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5024 elif enabled tms470; then
5025     add_cflags -pds=824 -pds=837
5026     disable inline_asm
5027 elif enabled pathscale; then
5028     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5029 elif enabled_any msvc icl; then
5030     enabled x86_32 && disable aligned_stack
5031     enabled_all x86_32 debug && add_cflags -Oy-
5032     enabled debug && add_ldflags -debug
5033     enable pragma_deprecated
5034     if enabled icl; then
5035         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5036         # (correctly) on icl 13.x.
5037         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5038             add_cflags -Qansi-alias
5039         # Some inline asm is not compilable in debug
5040         if enabled debug; then
5041             disable ebp_available
5042             disable ebx_available
5043         fi
5044     fi
5045     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 onwards actually has log2.
5046     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5047 fi
5048
5049 case $as_type in
5050     clang)
5051         add_asflags -Qunused-arguments
5052     ;;
5053 esac
5054
5055 case $ld_type in
5056     clang)
5057         check_ldflags -Qunused-arguments
5058     ;;
5059 esac
5060
5061 case $target_os in
5062     osf1)
5063         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5064     ;;
5065     plan9)
5066         add_cppflags -Dmain=plan9_main
5067     ;;
5068 esac
5069
5070 enable frame_thread_encoder
5071
5072 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5073
5074 check_deps $CONFIG_LIST       \
5075            $CONFIG_EXTRA      \
5076            $HAVE_LIST         \
5077            $ALL_COMPONENTS    \
5078
5079 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"
5080
5081
5082 if test $target_os = "haiku"; then
5083     disable memalign
5084     disable posix_memalign
5085 fi
5086
5087 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5088     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
5089     enable dxva2_lib
5090
5091 ! enabled_any memalign posix_memalign aligned_malloc &&
5092     enabled_any $need_memalign && enable memalign_hack
5093
5094 # add_dep lib dep
5095 # -> enable ${lib}_deps_${dep}
5096 # -> add $dep to ${lib}_deps only once
5097 add_dep() {
5098     lib=$1
5099     dep=$2
5100     enabled "${lib}_deps_${dep}" && return 0
5101     enable  "${lib}_deps_${dep}"
5102     prepend "${lib}_deps" $dep
5103 }
5104
5105 # merge deps lib components
5106 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5107 merge_deps() {
5108     lib=$1
5109     shift
5110     for comp in $*; do
5111         enabled $comp || continue
5112         eval "dep=\"\$${comp}_deps\""
5113         for d in $dep; do
5114             add_dep $lib $d
5115         done
5116     done
5117 }
5118
5119 merge_deps libavfilter $FILTER_LIST
5120
5121 for thread in $THREADS_LIST; do
5122     if enabled $thread; then
5123         test -n "$thread_type" &&
5124             die "ERROR: Only one thread type must be selected." ||
5125             thread_type="$thread"
5126     fi
5127 done
5128
5129 # conditional library dependencies, in linking order
5130 enabled aconvert_filter     && prepend avfilter_deps "swresample"
5131 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5132 enabled aresample_filter    && prepend avfilter_deps "swresample"
5133 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5134 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5135 enabled decimate_filter     && prepend avfilter_deps "avcodec"
5136 enabled deshake_filter      && prepend avfilter_deps "avcodec"
5137 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5138 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5139 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5140 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5141 enabled mp_filter           && prepend avfilter_deps "avcodec"
5142 enabled pan_filter          && prepend avfilter_deps "swresample"
5143 enabled pp_filter           && prepend avfilter_deps "postproc"
5144 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5145 enabled resample_filter && prepend avfilter_deps "avresample"
5146 enabled sab_filter          && prepend avfilter_deps "swscale"
5147 enabled scale_filter    && prepend avfilter_deps "swscale"
5148 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5149 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5150 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5151
5152 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5153
5154 enabled opus_decoder    && prepend avcodec_deps "swresample"
5155
5156 expand_deps(){
5157     lib_deps=${1}_deps
5158     eval "deps=\$$lib_deps"
5159     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5160     unique $lib_deps
5161 }
5162
5163 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5164 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5165
5166 map 'expand_deps $v' $LIBRARY_LIST
5167
5168 echo "install prefix            $prefix"
5169 echo "source path               $source_path"
5170 echo "C compiler                $cc"
5171 echo "C library                 $libc_type"
5172 if test "$host_cc" != "$cc"; then
5173     echo "host C compiler           $host_cc"
5174     echo "host C library            $host_libc_type"
5175 fi
5176 echo "ARCH                      $arch ($cpu)"
5177 if test "$build_suffix" != ""; then
5178     echo "build suffix              $build_suffix"
5179 fi
5180 if test "$progs_suffix" != ""; then
5181     echo "progs suffix              $progs_suffix"
5182 fi
5183 if test "$extra_version" != ""; then
5184     echo "version string suffix     $extra_version"
5185 fi
5186 echo "big-endian                ${bigendian-no}"
5187 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5188 if enabled x86; then
5189     echo "${yasmexe}                      ${yasm-no}"
5190     echo "MMX enabled               ${mmx-no}"
5191     echo "MMXEXT enabled            ${mmxext-no}"
5192     echo "3DNow! enabled            ${amd3dnow-no}"
5193     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5194     echo "SSE enabled               ${sse-no}"
5195     echo "SSSE3 enabled             ${ssse3-no}"
5196     echo "AVX enabled               ${avx-no}"
5197     echo "XOP enabled               ${xop-no}"
5198     echo "FMA3 enabled              ${fma3-no}"
5199     echo "FMA4 enabled              ${fma4-no}"
5200     echo "i686 features enabled     ${i686-no}"
5201     echo "CMOV is fast              ${fast_cmov-no}"
5202     echo "EBX available             ${ebx_available-no}"
5203     echo "EBP available             ${ebp_available-no}"
5204 fi
5205 if enabled aarch64; then
5206     echo "NEON enabled              ${neon-no}"
5207     echo "VFP enabled               ${vfp-no}"
5208 fi
5209 if enabled arm; then
5210     echo "ARMv5TE enabled           ${armv5te-no}"
5211     echo "ARMv6 enabled             ${armv6-no}"
5212     echo "ARMv6T2 enabled           ${armv6t2-no}"
5213     echo "VFP enabled               ${vfp-no}"
5214     echo "NEON enabled              ${neon-no}"
5215     echo "THUMB enabled             ${thumb-no}"
5216 fi
5217 if enabled mips; then
5218     echo "MIPS FPU enabled          ${mipsfpu-no}"
5219     echo "MIPS32R2 enabled          ${mips32r2-no}"
5220     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5221     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5222 fi
5223 if enabled ppc; then
5224     echo "AltiVec enabled           ${altivec-no}"
5225     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5226     echo "dcbzl available           ${dcbzl-no}"
5227 fi
5228 echo "debug symbols             ${debug-no}"
5229 echo "strip symbols             ${stripping-no}"
5230 echo "optimize for size         ${small-no}"
5231 echo "optimizations             ${optimizations-no}"
5232 echo "static                    ${static-no}"
5233 echo "shared                    ${shared-no}"
5234 echo "postprocessing support    ${postproc-no}"
5235 echo "new filter support        ${avfilter-no}"
5236 echo "network support           ${network-no}"
5237 echo "threading support         ${thread_type-no}"
5238 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5239 echo "SDL support               ${sdl-no}"
5240 echo "opencl enabled            ${opencl-no}"
5241 echo "libzvbi enabled           ${libzvbi-no}"
5242 echo "texi2html enabled         ${texi2html-no}"
5243 echo "perl enabled              ${perl-no}"
5244 echo "pod2man enabled           ${pod2man-no}"
5245 echo "makeinfo enabled          ${makeinfo-no}"
5246 test -n "$random_seed" &&
5247     echo "random seed               ${random_seed}"
5248 echo
5249
5250 echo "External libraries:"
5251 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5252 echo
5253
5254 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5255     echo "Enabled ${type}s:"
5256     eval list=\$$(toupper $type)_LIST
5257     print_enabled '_*' $list | print_3_columns
5258     echo
5259 done
5260
5261 license="LGPL version 2.1 or later"
5262 if enabled nonfree; then
5263     license="nonfree and unredistributable"
5264 elif enabled gplv3; then
5265     license="GPL version 3 or later"
5266 elif enabled lgplv3; then
5267     license="LGPL version 3 or later"
5268 elif enabled gpl; then
5269     license="GPL version 2 or later"
5270 fi
5271
5272 echo "License: $license"
5273
5274 echo "Creating config.mak, config.h, and doc/config.texi..."
5275
5276 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5277
5278 enabled stripping || strip="echo skipping strip"
5279
5280 config_files="$TMPH config.mak doc/config.texi"
5281
5282 cat > config.mak <<EOF
5283 # Automatically generated by configure - do not modify!
5284 ifndef FFMPEG_CONFIG_MAK
5285 FFMPEG_CONFIG_MAK=1
5286 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5287 prefix=$prefix
5288 LIBDIR=\$(DESTDIR)$libdir
5289 SHLIBDIR=\$(DESTDIR)$shlibdir
5290 INCDIR=\$(DESTDIR)$incdir
5291 BINDIR=\$(DESTDIR)$bindir
5292 DATADIR=\$(DESTDIR)$datadir
5293 DOCDIR=\$(DESTDIR)$docdir
5294 MANDIR=\$(DESTDIR)$mandir
5295 SRC_PATH=$source_path
5296 ifndef MAIN_MAKEFILE
5297 SRC_PATH:=\$(SRC_PATH:.%=..%)
5298 endif
5299 CC_IDENT=$cc_ident
5300 ARCH=$arch
5301 CC=$cc
5302 CXX=$cxx
5303 AS=$as
5304 LD=$ld
5305 DEPCC=$dep_cc
5306 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5307 DEPAS=$as
5308 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5309 YASM=$yasmexe
5310 DEPYASM=$yasmexe
5311 AR=$ar
5312 ARFLAGS=$arflags
5313 AR_O=$ar_o
5314 RANLIB=$ranlib
5315 STRIP=$strip
5316 CP=cp -p
5317 LN_S=$ln_s
5318 CPPFLAGS=$CPPFLAGS
5319 CFLAGS=$CFLAGS
5320 CXXFLAGS=$CXXFLAGS
5321 ASFLAGS=$ASFLAGS
5322 AS_C=$AS_C
5323 AS_O=$AS_O
5324 CC_C=$CC_C
5325 CC_E=$CC_E
5326 CC_O=$CC_O
5327 CXX_C=$CXX_C
5328 CXX_O=$CXX_O
5329 LD_O=$LD_O
5330 LD_LIB=$LD_LIB
5331 LD_PATH=$LD_PATH
5332 DLLTOOL=$dlltool
5333 WINDRES=$windres
5334 DEPWINDRES=$dep_cc
5335 LDFLAGS=$LDFLAGS
5336 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5337 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5338 YASMFLAGS=$YASMFLAGS
5339 BUILDSUF=$build_suffix
5340 PROGSSUF=$progs_suffix
5341 FULLNAME=$FULLNAME
5342 LIBPREF=$LIBPREF
5343 LIBSUF=$LIBSUF
5344 LIBNAME=$LIBNAME
5345 SLIBPREF=$SLIBPREF
5346 SLIBSUF=$SLIBSUF
5347 EXESUF=$EXESUF
5348 EXTRA_VERSION=$extra_version
5349 CCDEP=$CCDEP
5350 CXXDEP=$CXXDEP
5351 CCDEP_FLAGS=$CCDEP_FLAGS
5352 ASDEP=$ASDEP
5353 ASDEP_FLAGS=$ASDEP_FLAGS
5354 CC_DEPFLAGS=$CC_DEPFLAGS
5355 AS_DEPFLAGS=$AS_DEPFLAGS
5356 HOSTCC=$host_cc
5357 HOSTLD=$host_ld
5358 HOSTCFLAGS=$host_cflags
5359 HOSTCPPFLAGS=$host_cppflags
5360 HOSTEXESUF=$HOSTEXESUF
5361 HOSTLDFLAGS=$host_ldflags
5362 HOSTLIBS=$host_libs
5363 DEPHOSTCC=$host_cc
5364 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5365 HOSTCCDEP=$HOSTCCDEP
5366 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5367 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5368 HOSTCC_C=$HOSTCC_C
5369 HOSTCC_O=$HOSTCC_O
5370 HOSTLD_O=$HOSTLD_O
5371 TARGET_EXEC=$target_exec $target_exec_args
5372 TARGET_PATH=$target_path
5373 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5374 CFLAGS-ffplay=$sdl_cflags
5375 ZLIB=$($ldflags_filter -lz)
5376 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5377 EXTRALIBS=$extralibs
5378 COMPAT_OBJS=$compat_objs
5379 EXEOBJS=$exeobjs
5380 INSTALL=$install
5381 LIBTARGET=${LIBTARGET}
5382 SLIBNAME=${SLIBNAME}
5383 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5384 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5385 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5386 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5387 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5388 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5389 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5390 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5391 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5392 NOREDZONE_FLAGS=$noredzone_flags
5393 EOF
5394
5395 get_version(){
5396     lcname=lib${1}
5397     name=$(toupper $lcname)
5398     file=$source_path/$lcname/version.h
5399     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5400     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5401     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5402     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5403     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5404     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5405 }
5406
5407 map 'get_version $v' $LIBRARY_LIST
5408
5409 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5410
5411 print_program_libs(){
5412     eval "program_libs=\$${1}_libs"
5413     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5414 }
5415
5416 map 'print_program_libs $v' $PROGRAM_LIST
5417
5418 cat > $TMPH <<EOF
5419 /* Automatically generated by configure - do not modify! */
5420 #ifndef FFMPEG_CONFIG_H
5421 #define FFMPEG_CONFIG_H
5422 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5423 #define FFMPEG_LICENSE "$(c_escape $license)"
5424 #define CONFIG_THIS_YEAR 2014
5425 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5426 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5427 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5428 #define av_restrict $_restrict
5429 #define EXTERN_PREFIX "${extern_prefix}"
5430 #define EXTERN_ASM ${extern_prefix}
5431 #define BUILDSUF "$build_suffix"
5432 #define SLIBSUF "$SLIBSUF"
5433 #define HAVE_MMX2 HAVE_MMXEXT
5434 EOF
5435
5436 test -n "$assert_level" &&
5437     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5438
5439 test -n "$malloc_prefix" &&
5440     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5441
5442 if enabled yasm; then
5443     append config_files $TMPASM
5444     printf '' >$TMPASM
5445 fi
5446
5447 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5448
5449
5450 mkdir -p doc
5451 echo "@c auto-generated by configure" > doc/config.texi
5452
5453 print_config ARCH_   "$config_files" $ARCH_LIST
5454 print_config HAVE_   "$config_files" $HAVE_LIST
5455 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5456                                      $CONFIG_EXTRA      \
5457                                      $ALL_COMPONENTS    \
5458
5459 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5460 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5461
5462 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5463 cp_if_changed $TMPH config.h
5464 touch .config
5465
5466 enabled yasm && cp_if_changed $TMPASM config.asm
5467
5468 cat > $TMPH <<EOF
5469 /* Generated by ffconf */
5470 #ifndef AVUTIL_AVCONFIG_H
5471 #define AVUTIL_AVCONFIG_H
5472 EOF
5473
5474 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5475
5476 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5477
5478 cp_if_changed $TMPH libavutil/avconfig.h
5479
5480 if test -n "$WARNINGS"; then
5481     printf "\n$WARNINGS"
5482     enabled fatal_warnings && exit 1
5483 fi
5484
5485 # build pkg-config files
5486
5487 lib_version(){
5488     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
5489 }
5490
5491 pkgconfig_generate(){
5492     name=$1
5493     shortname=${name#lib}${build_suffix}
5494     comment=$2
5495     version=$3
5496     libs=$4
5497     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5498     requires=${requires%, }
5499     enabled ${name#lib} || return 0
5500     mkdir -p $name
5501     cat <<EOF > $name/$name${build_suffix}.pc
5502 prefix=$prefix
5503 exec_prefix=\${prefix}
5504 libdir=$libdir
5505 includedir=$incdir
5506
5507 Name: $name
5508 Description: $comment
5509 Version: $version
5510 Requires: $(enabled shared || echo $requires)
5511 Requires.private: $(enabled shared && echo $requires)
5512 Conflicts:
5513 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5514 Libs.private: $(enabled shared && echo $libs)
5515 Cflags: -I\${includedir}
5516 EOF
5517
5518 mkdir -p doc/examples/pc-uninstalled
5519 includedir=${source_path}
5520 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5521     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5522 prefix=
5523 exec_prefix=
5524 libdir=\${pcfiledir}/../../../$name
5525 includedir=${includedir}
5526
5527 Name: $name
5528 Description: $comment
5529 Version: $version
5530 Requires: $requires
5531 Conflicts:
5532 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5533 Cflags: -I\${includedir}
5534 EOF
5535 }
5536
5537 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
5538 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
5539 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
5540 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
5541 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
5542 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
5543 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs"
5544 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
5545 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"