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
  91 Licensing options:
  92   --enable-gpl             allow use of GPL code, the resulting libs
  93                            and binaries will be under GPL [no]
  94   --enable-version3        upgrade (L)GPL to version 3 [no]
  95   --enable-nonfree         allow use of nonfree code, the resulting libs
  96                            and binaries will be unredistributable [no]
  97
  98 Configuration options:
  99   --disable-static         do not build static libraries [no]
 100   --enable-shared          build shared libraries [no]
 101   --enable-small           optimize for size instead of speed
 102   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 103   --enable-gray            enable full grayscale support (slower color)
 104   --disable-swscale-alpha  disable alpha channel support in swscale
 105   --disable-all            disable building components, libraries and programs
 106   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 107   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
 108
 109 Program options:
 110   --disable-programs       do not build command line programs
 111   --disable-ffmpeg         disable ffmpeg build
 112   --disable-ffplay         disable ffplay build
 113   --disable-ffprobe        disable ffprobe build
 114   --disable-ffserver       disable ffserver build
 115
 116 Documentation options:
 117   --disable-doc            do not build documentation
 118   --disable-htmlpages      do not build HTML documentation pages
 119   --disable-manpages       do not build man documentation pages
 120   --disable-podpages       do not build POD documentation pages
 121   --disable-txtpages       do not build text documentation pages
 122
 123 Component options:
 124   --disable-avdevice       disable libavdevice build
 125   --disable-avcodec        disable libavcodec build
 126   --disable-avformat       disable libavformat build
 127   --disable-avutil         disable libavutil build
 128   --disable-swresample     disable libswresample build
 129   --disable-swscale        disable libswscale build
 130   --disable-postproc       disable libpostproc build
 131   --disable-avfilter       disable libavfilter build
 132   --enable-avresample      enable libavresample build [no]
 133   --disable-pthreads       disable pthreads [auto]
 134   --disable-w32threads     disable Win32 threads [auto]
 135   --disable-os2threads     disable OS/2 threads [auto]
 136   --disable-network        disable network support [no]
 137   --disable-dct            disable DCT code
 138   --disable-dwt            disable DWT code
 139   --disable-error-resilience disable error resilience code
 140   --disable-lsp            disable LSP code
 141   --disable-lzo            disable LZO decoder code
 142   --disable-mdct           disable MDCT code
 143   --disable-rdft           disable RDFT code
 144   --disable-fft            disable FFT code
 145
 146 Hardware accelerators:
 147   --disable-dxva2          disable DXVA2 code [autodetect]
 148   --disable-vaapi          disable VAAPI code [autodetect]
 149   --enable-vda             enable VDA code
 150   --disable-vdpau          disable VDPAU code [autodetect]
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188
 189 External library support:
 190   --enable-avisynth        enable reading of AviSynth script files [no]
 191   --disable-bzlib          disable bzlib [autodetect]
 192   --enable-fontconfig      enable fontconfig
 193   --enable-frei0r          enable frei0r video filtering
 194   --enable-gnutls          enable gnutls [no]
 195   --disable-iconv          disable iconv [autodetect]
 196   --enable-ladspa          enable LADSPA audio filtering
 197   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 198   --enable-libass          enable libass subtitles rendering [no]
 199   --enable-libbluray       enable BluRay reading using libbluray [no]
 200   --enable-libcaca         enable textual display using libcaca
 201   --enable-libcelt         enable CELT decoding via libcelt [no]
 202   --enable-libcdio         enable audio CD grabbing with libcdio
 203   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 204                            and libraw1394 [no]
 205   --enable-libfaac         enable AAC encoding via libfaac [no]
 206   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 207   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 208   --enable-libfreetype     enable libfreetype [no]
 209   --enable-libgme          enable Game Music Emu via libgme [no]
 210   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 211   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 212   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 213   --enable-libmodplug      enable ModPlug via libmodplug [no]
 214   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 215   --enable-libnut          enable NUT (de)muxing via libnut,
 216                            native (de)muxer exists [no]
 217   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 218   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 219   --enable-libopencv       enable video filtering via libopencv [no]
 220   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 221   --enable-libopus         enable Opus decoding via libopus [no]
 222   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 223   --enable-libquvi         enable quvi input via libquvi [no]
 224   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 225   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 226   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 227   --enable-libsoxr         enable Include libsoxr resampling [no]
 228   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 229   --enable-libssh          enable SFTP protocol via libssh [no]
 230   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 231   --enable-libtheora       enable Theora encoding via libtheora [no]
 232   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 233   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 234   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 235   --enable-libvidstab      enable video stabilization using vid.stab [no]
 236   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 237   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 238   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 239                            native implementation exists [no]
 240   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 241   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 242   --enable-libx264         enable H.264 encoding via x264 [no]
 243   --enable-libxavs         enable AVS encoding via xavs [no]
 244   --enable-libxvid         enable Xvid encoding via xvidcore,
 245                            native MPEG-4/Xvid encoder exists [no]
 246   --enable-libzmq          enable message passing via libzmq [no]
 247   --enable-libzvbi         enable teletext support via libzvbi [no]
 248   --enable-openal          enable OpenAL 1.1 capture support [no]
 249   --enable-opencl          enable OpenCL code
 250   --enable-openssl         enable openssl [no]
 251   --enable-x11grab         enable X11 grabbing [no]
 252   --disable-zlib           disable zlib [autodetect]
 253
 254 Advanced options (experts only):
 255   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 256   --enable-cross-compile   assume a cross-compiler is used
 257   --sysroot=PATH           root of cross-build tree
 258   --sysinclude=PATH        location of cross-build system headers
 259   --target-os=OS           compiler targets OS [$target_os]
 260   --target-exec=CMD        command to run executables on target
 261   --target-path=DIR        path to view of build directory on target
 262   --target-samples=DIR     path to samples directory on target
 263   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 264   --toolchain=NAME         set tool defaults according to NAME
 265   --nm=NM                  use nm tool NM [$nm_default]
 266   --ar=AR                  use archive tool AR [$ar_default]
 267   --as=AS                  use assembler AS [$as_default]
 268   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 269   --cc=CC                  use C compiler CC [$cc_default]
 270   --cxx=CXX                use C compiler CXX [$cxx_default]
 271   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 272   --ld=LD                  use linker LD [$ld_default]
 273   --host-cc=HOSTCC         use host C compiler HOSTCC
 274   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 275   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 276   --host-ld=HOSTLD         use host linker HOSTLD
 277   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 278   --host-libs=HLIBS        use libs HLIBS when linking for host
 279   --host-os=OS             compiler host OS [$target_os]
 280   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 281   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 282   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 283   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 284   --extra-version=STRING   version string suffix []
 285   --optflags=OPTFLAGS      override optimization-related compiler flags
 286   --build-suffix=SUFFIX    library name suffix []
 287   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 288   --progs-suffix=SUFFIX    program name suffix []
 289   --arch=ARCH              select architecture [$arch]
 290   --cpu=CPU                select the minimum required CPU (affects
 291                            instruction selection, may crash on older CPUs)
 292   --enable-pic             build position-independent code
 293   --enable-sram            allow use of on-chip SRAM
 294   --enable-thumb           compile for Thumb instruction set
 295   --disable-symver         disable symbol versioning
 296   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 297   --disable-safe-bitstream-reader
 298                            disable buffer boundary checking in bitreaders
 299                            (faster, but may crash)
 300   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 301   --enable-lto             use link-time optimization
 302
 303 Optimization options (experts only):
 304   --disable-asm            disable all assembler optimizations
 305   --disable-altivec        disable AltiVec optimizations
 306   --disable-amd3dnow       disable 3DNow! optimizations
 307   --disable-amd3dnowext    disable 3DNow! extended optimizations
 308   --disable-mmx            disable MMX optimizations
 309   --disable-mmxext         disable MMXEXT optimizations
 310   --disable-sse            disable SSE optimizations
 311   --disable-sse2           disable SSE2 optimizations
 312   --disable-sse3           disable SSE3 optimizations
 313   --disable-ssse3          disable SSSE3 optimizations
 314   --disable-sse4           disable SSE4 optimizations
 315   --disable-sse42          disable SSE4.2 optimizations
 316   --disable-avx            disable AVX optimizations
 317   --disable-fma4           disable FMA4 optimizations
 318   --disable-armv5te        disable armv5te optimizations
 319   --disable-armv6          disable armv6 optimizations
 320   --disable-armv6t2        disable armv6t2 optimizations
 321   --disable-vfp            disable VFP optimizations
 322   --disable-neon           disable NEON optimizations
 323   --disable-vis            disable VIS optimizations
 324   --disable-inline-asm     disable use of inline assembler
 325   --disable-yasm           disable use of yasm assembler
 326   --disable-mips32r2       disable MIPS32R2 optimizations
 327   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 328   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 329   --disable-mipsfpu        disable floating point MIPS optimizations
 330   --disable-fast-unaligned consider unaligned accesses slow
 331
 332 Developer options (useful when working on FFmpeg itself):
 333   --disable-debug          disable debugging symbols
 334   --enable-debug=LEVEL     set the debug level [$debuglevel]
 335   --disable-optimizations  disable compiler optimizations
 336   --enable-extra-warnings  enable more compiler warnings
 337   --disable-stripping      disable stripping of executables and shared libraries
 338   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 339                            2 causes a slowdown at runtime.
 340   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 341   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 342                            leaks and errors, using the specified valgrind binary.
 343                            Cannot be combined with --target-exec
 344   --enable-ftrapv          Trap arithmetic overflows
 345   --samples=PATH           location of test samples for FATE, if not set use
 346                            \$FATE_SAMPLES at make invocation time.
 347   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 348                            should be used only for debugging purposes)
 349   --enable-random          randomly enable/disable components
 350   --disable-random
 351   --enable-random=LIST     randomly enable/disable specific components or
 352   --disable-random=LIST    component groups. LIST is a comma-separated list
 353                            of NAME[:PROB] entries where NAME is a component
 354                            (group) and PROB the probability associated with
 355                            NAME (default 0.5).
 356   --random-seed=VALUE      seed value for --enable/disable-random
 357
 358 NOTE: Object files are built at the place where configure is launched.
 359 EOF
 360   exit 0
 361 }
 362
 363 quotes='""'
 364
 365 log(){
 366     echo "$@" >> $logfile
 367 }
 368
 369 log_file(){
 370     log BEGIN $1
 371     pr -n -t $1 >> $logfile
 372     log END $1
 373 }
 374
 375 echolog(){
 376     log "$@"
 377     echo "$@"
 378 }
 379
 380 warn(){
 381     log "WARNING: $*"
 382     WARNINGS="${WARNINGS}WARNING: $*\n"
 383 }
 384
 385 die(){
 386     echolog "$@"
 387     cat <<EOF
 388
 389 If you think configure made a mistake, make sure you are using the latest
 390 version from Git.  If the latest version fails, report the problem to the
 391 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 392 EOF
 393     if disabled logging; then
 394         cat <<EOF
 395 Rerun configure with logging enabled (do not use --disable-logging), and
 396 include the log this produces with your report.
 397 EOF
 398     else
 399         cat <<EOF
 400 Include the log file "$logfile" produced by configure as this will help
 401 solving the problem.
 402 EOF
 403     fi
 404     exit 1
 405 }
 406
 407 # Avoid locale weirdness, besides we really just want to translate ASCII.
 408 toupper(){
 409     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 410 }
 411
 412 tolower(){
 413     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 414 }
 415
 416 c_escape(){
 417     echo "$*" | sed 's/["\\]/\\\0/g'
 418 }
 419
 420 sh_quote(){
 421     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 422     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 423     echo "$v"
 424 }
 425
 426 cleanws(){
 427     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 428 }
 429
 430 filter(){
 431     pat=$1
 432     shift
 433     for v; do
 434         eval "case $v in $pat) echo $v ;; esac"
 435     done
 436 }
 437
 438 filter_out(){
 439     pat=$1
 440     shift
 441     for v; do
 442         eval "case $v in $pat) ;; *) echo $v ;; esac"
 443     done
 444 }
 445
 446 map(){
 447     m=$1
 448     shift
 449     for v; do eval $m; done
 450 }
 451
 452 add_suffix(){
 453     suffix=$1
 454     shift
 455     for v; do echo ${v}${suffix}; done
 456 }
 457
 458 set_all(){
 459     value=$1
 460     shift
 461     for var in $*; do
 462         eval $var=$value
 463     done
 464 }
 465
 466 set_weak(){
 467     value=$1
 468     shift
 469     for var; do
 470         eval : \${$var:=$value}
 471     done
 472 }
 473
 474 sanitize_var_name(){
 475     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 476 }
 477
 478 set_safe(){
 479     var=$1
 480     shift
 481     eval $(sanitize_var_name "$var")='$*'
 482 }
 483
 484 get_safe(){
 485     eval echo \$$(sanitize_var_name "$1")
 486 }
 487
 488 pushvar(){
 489     for pvar in $*; do
 490         eval level=\${${pvar}_level:=0}
 491         eval ${pvar}_${level}="\$$pvar"
 492         eval ${pvar}_level=$(($level+1))
 493     done
 494 }
 495
 496 popvar(){
 497     for pvar in $*; do
 498         eval level=\${${pvar}_level:-0}
 499         test $level = 0 && continue
 500         eval level=$(($level-1))
 501         eval $pvar="\${${pvar}_${level}}"
 502         eval ${pvar}_level=$level
 503         eval unset ${pvar}_${level}
 504     done
 505 }
 506
 507 enable(){
 508     set_all yes $*
 509 }
 510
 511 disable(){
 512     set_all no $*
 513 }
 514
 515 enable_weak(){
 516     set_weak yes $*
 517 }
 518
 519 disable_weak(){
 520     set_weak no $*
 521 }
 522
 523 enable_safe(){
 524     for var; do
 525         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 526     done
 527 }
 528
 529 disable_safe(){
 530     for var; do
 531         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 532     done
 533 }
 534
 535 do_enable_deep(){
 536     for var; do
 537         enabled $var && continue
 538         eval sel="\$${var}_select"
 539         eval sgs="\$${var}_suggest"
 540         pushvar var sgs
 541         enable_deep $sel
 542         popvar sgs
 543         enable_deep_weak $sgs
 544         popvar var
 545     done
 546 }
 547
 548 enable_deep(){
 549     do_enable_deep $*
 550     enable $*
 551 }
 552
 553 enable_deep_weak(){
 554     for var; do
 555         disabled $var && continue
 556         pushvar var
 557         do_enable_deep $var
 558         popvar var
 559         enable_weak $var
 560     done
 561 }
 562
 563 enabled(){
 564     test "${1#!}" = "$1" && op== || op=!=
 565     eval test "x\$${1#!}" $op "xyes"
 566 }
 567
 568 disabled(){
 569     test "${1#!}" = "$1" && op== || op=!=
 570     eval test "x\$${1#!}" $op "xno"
 571 }
 572
 573 enabled_all(){
 574     for opt; do
 575         enabled $opt || return 1
 576     done
 577 }
 578
 579 disabled_all(){
 580     for opt; do
 581         disabled $opt || return 1
 582     done
 583 }
 584
 585 enabled_any(){
 586     for opt; do
 587         enabled $opt && return 0
 588     done
 589 }
 590
 591 disabled_any(){
 592     for opt; do
 593         disabled $opt && return 0
 594     done
 595     return 1
 596 }
 597
 598 set_default(){
 599     for opt; do
 600         eval : \${$opt:=\$${opt}_default}
 601     done
 602 }
 603
 604 is_in(){
 605     value=$1
 606     shift
 607     for var in $*; do
 608         [ $var = $value ] && return 0
 609     done
 610     return 1
 611 }
 612
 613 do_check_deps(){
 614     for cfg; do
 615         cfg="${cfg#!}"
 616         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 617         disabled ${cfg}_checking && continue
 618         enable ${cfg}_checking
 619         append allopts $cfg
 620
 621         eval dep_all="\$${cfg}_deps"
 622         eval dep_any="\$${cfg}_deps_any"
 623         eval dep_sel="\$${cfg}_select"
 624         eval dep_sgs="\$${cfg}_suggest"
 625         eval dep_ifa="\$${cfg}_if"
 626         eval dep_ifn="\$${cfg}_if_any"
 627
 628         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 629         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 630         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 631
 632         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 633         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 634         enabled_all  $dep_all || disable $cfg
 635         enabled_any  $dep_any || disable $cfg
 636         disabled_any $dep_sel && disable $cfg
 637
 638         if enabled $cfg; then
 639             enable_deep $dep_sel
 640             enable_deep_weak $dep_sgs
 641         fi
 642
 643         disable ${cfg}_checking
 644     done
 645 }
 646
 647 check_deps(){
 648     unset allopts
 649
 650     do_check_deps "$@"
 651
 652     for cfg in $allopts; do
 653         enabled $cfg || continue
 654         eval dep_extralibs="\$${cfg}_extralibs"
 655         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 656     done
 657 }
 658
 659 print_config(){
 660     pfx=$1
 661     files=$2
 662     shift 2
 663     map 'eval echo "$v \${$v:-no}"' "$@" |
 664     awk "BEGIN { split(\"$files\", files) }
 665         {
 666             c = \"$pfx\" toupper(\$1);
 667             v = \$2;
 668             sub(/yes/, 1, v);
 669             sub(/no/,  0, v);
 670             for (f in files) {
 671                 file = files[f];
 672                 if (file ~ /\\.h\$/) {
 673                     printf(\"#define %s %d\\n\", c, v) >>file;
 674                 } else if (file ~ /\\.asm\$/) {
 675                     printf(\"%%define %s %d\\n\", c, v) >>file;
 676                 } else if (file ~ /\\.mak\$/) {
 677                     n = -v ? \"\" : \"!\";
 678                     printf(\"%s%s=yes\\n\", n, c) >>file;
 679                 } else if (file ~ /\\.texi\$/) {
 680                     pre = -v ? \"\" : \"@c \";
 681                     yesno = \$2;
 682                     c2 = tolower(c);
 683                     gsub(/_/, \"-\", c2);
 684                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 685                 }
 686             }
 687         }"
 688 }
 689
 690 print_enabled(){
 691     suf=$1
 692     shift
 693     for v; do
 694         enabled $v && printf "%s\n" ${v%$suf};
 695     done
 696 }
 697
 698 append(){
 699     var=$1
 700     shift
 701     eval "$var=\"\$$var $*\""
 702 }
 703
 704 prepend(){
 705     var=$1
 706     shift
 707     eval "$var=\"$* \$$var\""
 708 }
 709
 710 add_cppflags(){
 711     append CPPFLAGS "$@"
 712 }
 713
 714 add_cflags(){
 715     append CFLAGS $($cflags_filter "$@")
 716 }
 717
 718 add_cxxflags(){
 719     append CXXFLAGS $($cflags_filter "$@")
 720 }
 721
 722 add_asflags(){
 723     append ASFLAGS $($asflags_filter "$@")
 724 }
 725
 726 add_ldflags(){
 727     append LDFLAGS $($ldflags_filter "$@")
 728 }
 729
 730 add_extralibs(){
 731     prepend extralibs $($ldflags_filter "$@")
 732 }
 733
 734 add_host_cppflags(){
 735     append host_cppflags "$@"
 736 }
 737
 738 add_host_cflags(){
 739     append host_cflags $($host_cflags_filter "$@")
 740 }
 741
 742 add_host_ldflags(){
 743     append host_ldflags $($host_ldflags_filter "$@")
 744 }
 745
 746 add_compat(){
 747     append compat_objs $1
 748     shift
 749     map 'add_cppflags -D$v' "$@"
 750 }
 751
 752 check_cmd(){
 753     log "$@"
 754     "$@" >> $logfile 2>&1
 755 }
 756
 757 cc_o(){
 758     eval printf '%s\\n' $CC_O
 759 }
 760
 761 cc_e(){
 762     eval printf '%s\\n' $CC_E
 763 }
 764
 765 check_cc(){
 766     log check_cc "$@"
 767     cat > $TMPC
 768     log_file $TMPC
 769     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 770 }
 771
 772 check_cxx(){
 773     log check_cxx "$@"
 774     cat > $TMPCPP
 775     log_file $TMPCPP
 776     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 777 }
 778
 779 check_cpp(){
 780     log check_cpp "$@"
 781     cat > $TMPC
 782     log_file $TMPC
 783     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 784 }
 785
 786 as_o(){
 787     eval printf '%s\\n' $AS_O
 788 }
 789
 790 check_as(){
 791     log check_as "$@"
 792     cat > $TMPS
 793     log_file $TMPS
 794     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 795 }
 796
 797 check_inline_asm(){
 798     log check_inline_asm "$@"
 799     name="$1"
 800     code="$2"
 801     shift 2
 802     disable $name
 803     check_cc "$@" <<EOF && enable $name
 804 void foo(void){ __asm__ volatile($code); }
 805 EOF
 806 }
 807
 808 check_insn(){
 809     log check_insn "$@"
 810     check_inline_asm ${1}_inline "\"$2\""
 811     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 812 }
 813
 814 check_yasm(){
 815     log check_yasm "$@"
 816     echo "$1" > $TMPS
 817     log_file $TMPS
 818     shift 1
 819     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 820 }
 821
 822 ld_o(){
 823     eval printf '%s\\n' $LD_O
 824 }
 825
 826 check_ld(){
 827     log check_ld "$@"
 828     type=$1
 829     shift 1
 830     flags=$(filter_out '-l*|*.so' $@)
 831     libs=$(filter '-l*|*.so' $@)
 832     check_$type $($cflags_filter $flags) || return
 833     flags=$($ldflags_filter $flags)
 834     libs=$($ldflags_filter $libs)
 835     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 836 }
 837
 838 check_code(){
 839     log check_code "$@"
 840     check=$1
 841     headers=$2
 842     code=$3
 843     shift 3
 844     {
 845         for hdr in $headers; do
 846             echo "#include <$hdr>"
 847         done
 848         echo "int main(void) { $code; return 0; }"
 849     } | check_$check "$@"
 850 }
 851
 852 check_cppflags(){
 853     log check_cppflags "$@"
 854     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 855 int x;
 856 EOF
 857 }
 858
 859 check_cflags(){
 860     log check_cflags "$@"
 861     set -- $($cflags_filter "$@")
 862     check_cc "$@" <<EOF && append CFLAGS "$@"
 863 int x;
 864 EOF
 865 }
 866
 867 check_cxxflags(){
 868     log check_cxxflags "$@"
 869     set -- $($cflags_filter "$@")
 870     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 871 int x;
 872 EOF
 873 }
 874
 875 test_ldflags(){
 876     log test_ldflags "$@"
 877     check_ld "cc" "$@" <<EOF
 878 int main(void){ return 0; }
 879 EOF
 880 }
 881
 882 check_ldflags(){
 883     log check_ldflags "$@"
 884     test_ldflags "$@" && add_ldflags "$@"
 885 }
 886
 887 check_header(){
 888     log check_header "$@"
 889     header=$1
 890     shift
 891     disable_safe $header
 892     check_cpp "$@" <<EOF && enable_safe $header
 893 #include <$header>
 894 int x;
 895 EOF
 896 }
 897
 898 check_func(){
 899     log check_func "$@"
 900     func=$1
 901     shift
 902     disable $func
 903     check_ld "cc" "$@" <<EOF && enable $func
 904 extern int $func();
 905 int main(void){ $func(); }
 906 EOF
 907 }
 908
 909 check_mathfunc(){
 910     log check_mathfunc "$@"
 911     func=$1
 912     narg=$2
 913     shift 2
 914     test $narg = 2 && args="f, g" || args="f"
 915     disable $func
 916     check_ld "cc" "$@" <<EOF && enable $func
 917 #include <math.h>
 918 float foo(float f, float g) { return $func($args); }
 919 int main(void){ return (int) foo; }
 920 EOF
 921 }
 922
 923 check_func_headers(){
 924     log check_func_headers "$@"
 925     headers=$1
 926     funcs=$2
 927     shift 2
 928     {
 929         for hdr in $headers; do
 930             echo "#include <$hdr>"
 931         done
 932         for func in $funcs; do
 933             echo "long check_$func(void) { return (long) $func; }"
 934         done
 935         echo "int main(void) { return 0; }"
 936     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
 937 }
 938
 939 check_class_headers_cpp(){
 940     log check_class_headers_cpp "$@"
 941     headers=$1
 942     classes=$2
 943     shift 2
 944     {
 945         for hdr in $headers; do
 946             echo "#include <$hdr>"
 947         done
 948         echo "int main(void) { "
 949         i=1
 950         for class in $classes; do
 951             echo "$class obj$i;"
 952             i=$(expr $i + 1)
 953         done
 954         echo "return 0; }"
 955     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
 956 }
 957
 958 check_cpp_condition(){
 959     log check_cpp_condition "$@"
 960     header=$1
 961     condition=$2
 962     shift 2
 963     check_cpp "$@" <<EOF
 964 #include <$header>
 965 #if !($condition)
 966 #error "unsatisfied condition: $condition"
 967 #endif
 968 EOF
 969 }
 970
 971 check_lib(){
 972     log check_lib "$@"
 973     header="$1"
 974     func="$2"
 975     shift 2
 976     check_header $header && check_func $func "$@" && add_extralibs "$@"
 977 }
 978
 979 check_lib2(){
 980     log check_lib2 "$@"
 981     headers="$1"
 982     funcs="$2"
 983     shift 2
 984     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 985 }
 986
 987 check_lib_cpp(){
 988     log check_lib_cpp "$@"
 989     headers="$1"
 990     classes="$2"
 991     shift 2
 992     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
 993 }
 994
 995 check_pkg_config(){
 996     log check_pkg_config "$@"
 997     pkg="$1"
 998     headers="$2"
 999     funcs="$3"
1000     shift 3
1001     check_cmd $pkg_config --exists --print-errors $pkg || return
1002     pkg_cflags=$($pkg_config --cflags $pkg)
1003     pkg_libs=$($pkg_config --libs $pkg)
1004     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1005         set_safe ${pkg}_cflags $pkg_cflags   &&
1006         set_safe ${pkg}_libs   $pkg_libs
1007 }
1008
1009 check_exec(){
1010     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1011 }
1012
1013 check_exec_crash(){
1014     code=$(cat)
1015
1016     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1017     # are safe but may not be available everywhere.  Thus we use
1018     # raise(SIGTERM) instead.  The check is run in a subshell so we
1019     # can redirect the "Terminated" message from the shell.  SIGBUS
1020     # is not defined by standard C so it is used conditionally.
1021
1022     (check_exec "$@") >> $logfile 2>&1 <<EOF
1023 #include <signal.h>
1024 static void sighandler(int sig){
1025     raise(SIGTERM);
1026 }
1027 int foo(void){
1028     $code
1029 }
1030 int (*func_ptr)(void) = foo;
1031 int main(void){
1032     signal(SIGILL, sighandler);
1033     signal(SIGFPE, sighandler);
1034     signal(SIGSEGV, sighandler);
1035 #ifdef SIGBUS
1036     signal(SIGBUS, sighandler);
1037 #endif
1038     return func_ptr();
1039 }
1040 EOF
1041 }
1042
1043 check_type(){
1044     log check_type "$@"
1045     headers=$1
1046     type=$2
1047     shift 2
1048     disable_safe "$type"
1049     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1050 }
1051
1052 check_struct(){
1053     log check_struct "$@"
1054     headers=$1
1055     struct=$2
1056     member=$3
1057     shift 3
1058     disable_safe "${struct}_${member}"
1059     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1060         enable_safe "${struct}_${member}"
1061 }
1062
1063 check_builtin(){
1064     log check_builtin "$@"
1065     name=$1
1066     headers=$2
1067     builtin=$3
1068     shift 3
1069     disable "$name"
1070     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1071 }
1072
1073 require(){
1074     name="$1"
1075     header="$2"
1076     func="$3"
1077     shift 3
1078     check_lib $header $func "$@" || die "ERROR: $name not found"
1079 }
1080
1081 require2(){
1082     name="$1"
1083     headers="$2"
1084     func="$3"
1085     shift 3
1086     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1087 }
1088
1089 require_cpp(){
1090     name="$1"
1091     headers="$2"
1092     classes="$3"
1093     shift 3
1094     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1095 }
1096
1097 require_pkg_config(){
1098     pkg="$1"
1099     check_pkg_config "$@" || die "ERROR: $pkg not found"
1100     add_cflags    $(get_safe ${pkg}_cflags)
1101     add_extralibs $(get_safe ${pkg}_libs)
1102 }
1103
1104 hostcc_o(){
1105     eval printf '%s\\n' $HOSTCC_O
1106 }
1107
1108 check_host_cc(){
1109     log check_host_cc "$@"
1110     cat > $TMPC
1111     log_file $TMPC
1112     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1113 }
1114
1115 check_host_cppflags(){
1116     log check_host_cppflags "$@"
1117     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1118 int x;
1119 EOF
1120 }
1121
1122 check_host_cflags(){
1123     log check_host_cflags "$@"
1124     set -- $($host_cflags_filter "$@")
1125     check_host_cc "$@" <<EOF && append host_cflags "$@"
1126 int x;
1127 EOF
1128 }
1129
1130 apply(){
1131     file=$1
1132     shift
1133     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1134 }
1135
1136 cp_if_changed(){
1137     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1138     mkdir -p "$(dirname $2)"
1139     $cp_f "$1" "$2"
1140 }
1141
1142 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1143 # system-dependent things.
1144
1145 COMPONENT_LIST="
1146     bsfs
1147     decoders
1148     demuxers
1149     encoders
1150     filters
1151     hwaccels
1152     indevs
1153     muxers
1154     outdevs
1155     parsers
1156     protocols
1157 "
1158
1159 EXTERNAL_LIBRARY_LIST="
1160     avisynth
1161     bzlib
1162     crystalhd
1163     fontconfig
1164     frei0r
1165     gnutls
1166     iconv
1167     ladspa
1168     libaacplus
1169     libass
1170     libbluray
1171     libcaca
1172     libcdio
1173     libcelt
1174     libdc1394
1175     libfaac
1176     libfdk_aac
1177     libflite
1178     libfreetype
1179     libgme
1180     libgsm
1181     libiec61883
1182     libilbc
1183     libmodplug
1184     libmp3lame
1185     libnut
1186     libopencore_amrnb
1187     libopencore_amrwb
1188     libopencv
1189     libopenjpeg
1190     libopus
1191     libpulse
1192     libquvi
1193     librtmp
1194     libschroedinger
1195     libshine
1196     libsoxr
1197     libspeex
1198     libssh
1199     libstagefright_h264
1200     libtheora
1201     libtwolame
1202     libutvideo
1203     libv4l2
1204     libvidstab
1205     libvo_aacenc
1206     libvo_amrwbenc
1207     libvorbis
1208     libvpx
1209     libwavpack
1210     libx264
1211     libxavs
1212     libxvid
1213     libzmq
1214     libzvbi
1215     openal
1216     opencl
1217     openssl
1218     x11grab
1219     zlib
1220 "
1221
1222 DOCUMENT_LIST="
1223     doc
1224     htmlpages
1225     manpages
1226     podpages
1227     txtpages
1228 "
1229
1230 HWACCEL_LIST="
1231     dxva2
1232     vaapi
1233     vda
1234     vdpau
1235 "
1236
1237 LIBRARY_LIST="
1238     avcodec
1239     avdevice
1240     avfilter
1241     avformat
1242     avresample
1243     avutil
1244     postproc
1245     swresample
1246     swscale
1247 "
1248
1249 PROGRAM_LIST="
1250     ffplay
1251     ffprobe
1252     ffserver
1253     ffmpeg
1254 "
1255
1256 CONFIG_LIST="
1257     $COMPONENT_LIST
1258     $DOCUMENT_LIST
1259     $EXTERNAL_LIBRARY_LIST
1260     $HWACCEL_LIST
1261     $LIBRARY_LIST
1262     $PROGRAM_LIST
1263     dct
1264     dwt
1265     error_resilience
1266     fast_unaligned
1267     fft
1268     ftrapv
1269     gpl
1270     gray
1271     hardcoded_tables
1272     incompatible_libav_abi
1273     incompatible_fork_abi
1274     lsp
1275     lzo
1276     mdct
1277     memalign_hack
1278     memory_poisoning
1279     network
1280     nonfree
1281     pic
1282     rdft
1283     runtime_cpudetect
1284     safe_bitstream_reader
1285     shared
1286     small
1287     sram
1288     static
1289     swscale_alpha
1290     thumb
1291     version3
1292     xmm_clobber_test
1293 "
1294
1295 THREADS_LIST='
1296     pthreads
1297     w32threads
1298     os2threads
1299 '
1300
1301 ATOMICS_LIST='
1302     atomics_gcc
1303     atomics_suncc
1304     atomics_win32
1305 '
1306
1307 ARCH_LIST='
1308     aarch64
1309     alpha
1310     arm
1311     avr32
1312     avr32_ap
1313     avr32_uc
1314     bfin
1315     ia64
1316     m68k
1317     mips
1318     mips64
1319     parisc
1320     ppc
1321     ppc64
1322     s390
1323     sh4
1324     sparc
1325     sparc64
1326     tilegx
1327     tilepro
1328     tomi
1329     x86
1330     x86_32
1331     x86_64
1332 '
1333
1334 ARCH_EXT_LIST_ARM='
1335     armv5te
1336     armv6
1337     armv6t2
1338     neon
1339     vfp
1340     vfpv3
1341 '
1342
1343 ARCH_EXT_LIST_X86='
1344     amd3dnow
1345     amd3dnowext
1346     avx
1347     fma4
1348     i686
1349     mmx
1350     mmxext
1351     sse
1352     sse2
1353     sse3
1354     sse4
1355     sse42
1356     ssse3
1357 '
1358
1359 ARCH_EXT_LIST="
1360     $ARCH_EXT_LIST_ARM
1361     $ARCH_EXT_LIST_X86
1362     altivec
1363     ppc4xx
1364     vis
1365     mipsfpu
1366     mips32r2
1367     mipsdspr1
1368     mipsdspr2
1369 "
1370
1371 HAVE_LIST_CMDLINE='
1372     inline_asm
1373     symver
1374     yasm
1375 '
1376
1377 HAVE_LIST_PUB='
1378     bigendian
1379     fast_unaligned
1380     incompatible_libav_abi
1381     incompatible_fork_abi
1382 '
1383
1384 MATH_FUNCS="
1385     atanf
1386     atan2f
1387     cbrt
1388     cbrtf
1389     cosf
1390     exp2
1391     exp2f
1392     expf
1393     isinf
1394     isnan
1395     ldexpf
1396     llrint
1397     llrintf
1398     log2
1399     log2f
1400     log10f
1401     lrint
1402     lrintf
1403     powf
1404     rint
1405     round
1406     roundf
1407     sinf
1408     trunc
1409     truncf
1410 "
1411
1412 HAVE_LIST="
1413     $ARCH_EXT_LIST
1414     $(add_suffix _external $ARCH_EXT_LIST)
1415     $(add_suffix _inline   $ARCH_EXT_LIST)
1416     $HAVE_LIST_CMDLINE
1417     $HAVE_LIST_PUB
1418     $THREADS_LIST
1419     $ATOMICS_LIST
1420     $MATH_FUNCS
1421     access
1422     aligned_malloc
1423     aligned_stack
1424     alsa_asoundlib_h
1425     altivec_h
1426     arpa_inet_h
1427     asm_mod_q
1428     asm_mod_y
1429     asm_types_h
1430     atomic_cas_ptr
1431     atomics_native
1432     attribute_may_alias
1433     attribute_packed
1434     cdio_paranoia_h
1435     cdio_paranoia_paranoia_h
1436     CL_cl_h
1437     clock_gettime
1438     closesocket
1439     CommandLineToArgvW
1440     cpunop
1441     CryptGenRandom
1442     dcbzl
1443     dev_bktr_ioctl_bt848_h
1444     dev_bktr_ioctl_meteor_h
1445     dev_ic_bt8xx_h
1446     dev_video_bktr_ioctl_bt848_h
1447     dev_video_meteor_ioctl_meteor_h
1448     direct_h
1449     dlfcn_h
1450     dlopen
1451     dos_paths
1452     dxva_h
1453     ebp_available
1454     ebx_available
1455     fast_64bit
1456     fast_clz
1457     fast_cmov
1458     fcntl
1459     fork
1460     getaddrinfo
1461     gethrtime
1462     getopt
1463     GetProcessAffinityMask
1464     GetProcessMemoryInfo
1465     GetProcessTimes
1466     GetSystemTimeAsFileTime
1467     getrusage
1468     getservbyport
1469     gettimeofday
1470     glob
1471     gnu_as
1472     gsm_h
1473     ibm_asm
1474     inet_aton
1475     io_h
1476     inline_asm_labels
1477     isatty
1478     jack_port_get_latency_range
1479     kbhit
1480     ldbrx
1481     libdc1394_1
1482     libdc1394_2
1483     local_aligned_16
1484     local_aligned_8
1485     localtime_r
1486     loongson
1487     lzo1x_999_compress
1488     machine_ioctl_bt848_h
1489     machine_ioctl_meteor_h
1490     machine_rw_barrier
1491     makeinfo
1492     malloc_h
1493     MapViewOfFile
1494     memalign
1495     MemoryBarrier
1496     mkstemp
1497     mm_empty
1498     mmap
1499     mprotect
1500     msvcrt
1501     nanosleep
1502     openjpeg_1_5_openjpeg_h
1503     PeekNamedPipe
1504     perl
1505     pod2man
1506     poll_h
1507     posix_memalign
1508     pragma_deprecated
1509     pthread_cancel
1510     rdtsc
1511     rsync_contimeout
1512     sarestart
1513     sched_getaffinity
1514     sdl
1515     SetConsoleTextAttribute
1516     setmode
1517     setrlimit
1518     Sleep
1519     sndio_h
1520     socklen_t
1521     soundcard_h
1522     strerror_r
1523     struct_addrinfo
1524     struct_group_source_req
1525     struct_ip_mreq_source
1526     struct_ipv6_mreq
1527     struct_pollfd
1528     struct_rusage_ru_maxrss
1529     struct_sctp_event_subscribe
1530     struct_sockaddr_in6
1531     struct_sockaddr_sa_len
1532     struct_sockaddr_storage
1533     struct_stat_st_mtim_tv_nsec
1534     struct_v4l2_frmivalenum_discrete
1535     symver_asm_label
1536     symver_gnu_asm
1537     sync_val_compare_and_swap
1538     sysconf
1539     sysctl
1540     sys_mman_h
1541     sys_param_h
1542     sys_resource_h
1543     sys_select_h
1544     sys_soundcard_h
1545     sys_time_h
1546     sys_un_h
1547     sys_videoio_h
1548     termios_h
1549     texi2html
1550     threads
1551     unistd_h
1552     usleep
1553     vfp_args
1554     VirtualAlloc
1555     windows_h
1556     winsock2_h
1557     xform_asm
1558     xmm_clobbers
1559 "
1560
1561 # options emitted with CONFIG_ prefix but not available on the command line
1562 CONFIG_EXTRA="
1563     aandcttables
1564     ac3dsp
1565     audio_frame_queue
1566     dsputil
1567     exif
1568     frame_thread_encoder
1569     gcrypt
1570     golomb
1571     gplv3
1572     h264chroma
1573     h264dsp
1574     h264pred
1575     h264qpel
1576     hpeldsp
1577     huffman
1578     lgplv3
1579     lpc
1580     mpegaudio
1581     mpegaudiodsp
1582     mpegvideo
1583     mpegvideoenc
1584     nettle
1585     rangecoder
1586     riffdec
1587     riffenc
1588     rtpdec
1589     rtpenc_chain
1590     sinewin
1591     videodsp
1592     vp3dsp
1593 "
1594
1595 CMDLINE_SELECT="
1596     $ARCH_EXT_LIST
1597     $CONFIG_LIST
1598     $HAVE_LIST_CMDLINE
1599     $THREADS_LIST
1600     asm
1601     cross_compile
1602     debug
1603     extra_warnings
1604     logging
1605     lto
1606     optimizations
1607     stripping
1608 "
1609
1610 PATHS_LIST='
1611     bindir
1612     datadir
1613     docdir
1614     incdir
1615     libdir
1616     mandir
1617     prefix
1618     shlibdir
1619 '
1620
1621 CMDLINE_SET="
1622     $PATHS_LIST
1623     ar
1624     arch
1625     as
1626     assert_level
1627     build_suffix
1628     cc
1629     cpu
1630     cross_prefix
1631     cxx
1632     dep_cc
1633     extra_version
1634     host_cc
1635     host_cflags
1636     host_ld
1637     host_ldflags
1638     host_libs
1639     host_os
1640     install
1641     ld
1642     logfile
1643     malloc_prefix
1644     nm
1645     optflags
1646     pkg_config
1647     progs_suffix
1648     random_seed
1649     samples
1650     strip
1651     sysinclude
1652     sysroot
1653     target_exec
1654     target_os
1655     target_path
1656     target_samples
1657     tempprefix
1658     toolchain
1659     valgrind
1660     yasmexe
1661 "
1662
1663 CMDLINE_APPEND="
1664     extra_cflags
1665     extra_cxxflags
1666     host_cppflags
1667 "
1668
1669 # code dependency declarations
1670
1671 # architecture extensions
1672
1673 armv5te_deps="arm"
1674 armv6_deps="arm"
1675 armv6t2_deps="arm"
1676 neon_deps="arm"
1677 vfp_deps="arm"
1678 vfpv3_deps="vfp"
1679
1680 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1681
1682 mipsfpu_deps="mips"
1683 mips32r2_deps="mips"
1684 mipsdspr1_deps="mips"
1685 mipsdspr2_deps="mips"
1686
1687 altivec_deps="ppc"
1688 ppc4xx_deps="ppc"
1689
1690 vis_deps="sparc"
1691
1692 cpunop_deps="i686"
1693 x86_64_select="i686"
1694 x86_64_suggest="fast_cmov"
1695
1696 amd3dnow_deps="mmx"
1697 amd3dnowext_deps="amd3dnow"
1698 mmx_deps="x86"
1699 mmxext_deps="mmx"
1700 sse_deps="mmxext"
1701 sse2_deps="sse"
1702 sse3_deps="sse2"
1703 ssse3_deps="sse3"
1704 sse4_deps="ssse3"
1705 sse42_deps="sse4"
1706 avx_deps="sse42"
1707 fma4_deps="avx"
1708
1709 mmx_external_deps="yasm"
1710 mmx_inline_deps="inline_asm"
1711 mmx_suggest="mmx_external mmx_inline"
1712
1713 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1714     eval dep=\$${ext}_deps
1715     eval ${ext}_external_deps='"${dep}_external"'
1716     eval ${ext}_inline_deps='"${dep}_inline"'
1717     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1718 done
1719
1720 aligned_stack_if_any="ppc x86"
1721 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1722 fast_clz_if_any="alpha avr32 mips ppc x86"
1723 fast_unaligned_if_any="ppc x86"
1724
1725 inline_asm_deps="!tms470"
1726 need_memalign="altivec neon sse"
1727
1728 symver_if_any="symver_asm_label symver_gnu_asm"
1729
1730 log2_deps="!msvcrt"
1731
1732 # subsystems
1733 dct_select="rdft"
1734 error_resilience_select="dsputil"
1735 frame_thread_encoder_deps="encoders threads"
1736 lpc_select="dsputil"
1737 mdct_select="fft"
1738 rdft_select="fft"
1739 mpegaudio_select="mpegaudiodsp"
1740 mpegaudiodsp_select="dct"
1741 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1742 mpegvideoenc_select="mpegvideo"
1743
1744 # decoders / encoders
1745 aac_decoder_select="mdct sinewin"
1746 aac_encoder_select="audio_frame_queue mdct sinewin"
1747 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1748 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1749 ac3_encoder_select="mdct ac3dsp dsputil"
1750 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1751 aic_decoder_select="dsputil golomb"
1752 alac_encoder_select="lpc"
1753 als_decoder_select="dsputil"
1754 amrnb_decoder_select="lsp"
1755 amrwb_decoder_select="lsp"
1756 amv_decoder_select="dsputil hpeldsp exif"
1757 amv_encoder_select="aandcttables"
1758 ape_decoder_select="dsputil"
1759 asv1_decoder_select="dsputil"
1760 asv1_encoder_select="dsputil"
1761 asv2_decoder_select="dsputil"
1762 asv2_encoder_select="dsputil"
1763 atrac1_decoder_select="mdct sinewin"
1764 atrac3_decoder_select="mdct"
1765 avrn_decoder_select="exif"
1766 bink_decoder_select="dsputil hpeldsp"
1767 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1768 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1769 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1770 cllc_decoder_select="dsputil"
1771 comfortnoise_encoder_select="lpc"
1772 cook_decoder_select="dsputil mdct sinewin"
1773 cscd_decoder_select="lzo"
1774 cscd_decoder_suggest="zlib"
1775 dca_decoder_select="mdct"
1776 dirac_decoder_select="dsputil dwt golomb videodsp"
1777 dnxhd_decoder_select="dsputil"
1778 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1779 dvvideo_decoder_select="dsputil"
1780 dvvideo_encoder_select="dsputil"
1781 dxa_decoder_select="zlib"
1782 eac3_decoder_select="ac3_decoder"
1783 eac3_encoder_select="ac3_encoder"
1784 eamad_decoder_select="aandcttables dsputil mpegvideo"
1785 eatgq_decoder_select="aandcttables"
1786 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1787 exr_decoder_select="zlib"
1788 ffv1_decoder_select="dsputil golomb rangecoder"
1789 ffv1_encoder_select="dsputil rangecoder"
1790 ffvhuff_decoder_select="dsputil"
1791 ffvhuff_encoder_select="dsputil huffman"
1792 flac_decoder_select="golomb"
1793 flac_encoder_select="dsputil golomb lpc"
1794 flashsv_decoder_select="zlib"
1795 flashsv_encoder_select="zlib"
1796 flashsv2_encoder_select="zlib"
1797 flashsv2_decoder_select="zlib"
1798 flv_decoder_select="h263_decoder"
1799 flv_encoder_select="h263_encoder"
1800 fourxm_decoder_select="dsputil"
1801 fraps_decoder_select="dsputil huffman"
1802 g2m_decoder_select="dsputil zlib"
1803 g729_decoder_select="dsputil"
1804 h261_decoder_select="error_resilience mpegvideo"
1805 h261_encoder_select="aandcttables mpegvideoenc"
1806 h263_decoder_select="error_resilience h263_parser mpegvideo"
1807 h263_encoder_select="aandcttables mpegvideoenc"
1808 h263i_decoder_select="h263_decoder"
1809 h263p_encoder_select="h263_encoder"
1810 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1811 h264_decoder_suggest="error_resilience"
1812 huffyuv_decoder_select="dsputil"
1813 huffyuv_encoder_select="dsputil huffman"
1814 iac_decoder_select="dsputil fft mdct sinewin"
1815 imc_decoder_select="dsputil fft mdct sinewin"
1816 indeo3_decoder_select="hpeldsp"
1817 interplay_video_decoder_select="hpeldsp"
1818 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1819 jpegls_encoder_select="golomb"
1820 jv_decoder_select="dsputil"
1821 lagarith_decoder_select="dsputil"
1822 ljpeg_encoder_select="aandcttables mpegvideoenc"
1823 loco_decoder_select="golomb"
1824 mdec_decoder_select="dsputil error_resilience mpegvideo"
1825 metasound_decoder_select="lsp mdct sinewin"
1826 mimic_decoder_select="dsputil hpeldsp"
1827 mjpeg_decoder_select="dsputil hpeldsp exif"
1828 mjpegb_decoder_select="dsputil hpeldsp exif"
1829 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1830 mlp_decoder_select="dsputil mlp_parser"
1831 motionpixels_decoder_select="dsputil"
1832 mp1_decoder_select="mpegaudio"
1833 mp1float_decoder_select="mpegaudio"
1834 mp2_decoder_select="mpegaudio"
1835 mp2float_decoder_select="mpegaudio"
1836 mp3_decoder_select="mpegaudio"
1837 mp3adu_decoder_select="mpegaudio"
1838 mp3adufloat_decoder_select="mpegaudio"
1839 mp3float_decoder_select="mpegaudio"
1840 mp3on4_decoder_select="mpegaudio"
1841 mp3on4float_decoder_select="mpegaudio"
1842 mpc7_decoder_select="dsputil mpegaudiodsp"
1843 mpc8_decoder_select="dsputil mpegaudiodsp"
1844 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1845 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1846 mpeg1video_decoder_select="error_resilience mpegvideo"
1847 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1848 mpeg2video_decoder_select="error_resilience mpegvideo"
1849 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1850 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1851 mpeg4_encoder_select="h263_encoder"
1852 msmpeg4v1_decoder_select="h263_decoder"
1853 msmpeg4v2_decoder_select="h263_decoder"
1854 msmpeg4v2_encoder_select="h263_encoder"
1855 msmpeg4v3_decoder_select="h263_decoder"
1856 msmpeg4v3_encoder_select="h263_encoder"
1857 mss2_decoder_select="error_resilience vc1_decoder"
1858 mxpeg_decoder_select="dsputil hpeldsp exif"
1859 nellymoser_decoder_select="mdct sinewin"
1860 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1861 nuv_decoder_select="dsputil lzo"
1862 png_decoder_select="zlib"
1863 png_encoder_select="dsputil zlib"
1864 prores_decoder_select="dsputil"
1865 prores_encoder_select="dsputil"
1866 qcelp_decoder_select="lsp"
1867 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1868 ra_144_encoder_select="audio_frame_queue lpc"
1869 ralf_decoder_select="golomb"
1870 rtjpeg_decoder_select="dsputil"
1871 rv10_decoder_select="error_resilience h263_decoder"
1872 rv10_encoder_select="h263_encoder"
1873 rv20_decoder_select="error_resilience h263_decoder"
1874 rv20_encoder_select="h263_encoder"
1875 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1876 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1877 shorten_decoder_select="golomb"
1878 sipr_decoder_select="lsp"
1879 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1880 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1881 sonic_decoder_select="golomb"
1882 sonic_encoder_select="golomb"
1883 sonic_ls_encoder_select="golomb"
1884 sp5x_decoder_select="dsputil hpeldsp exif"
1885 svq1_decoder_select="hpeldsp"
1886 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1887 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1888 svq3_decoder_suggest="error_resilience zlib"
1889 tak_decoder_select="dsputil"
1890 theora_decoder_select="vp3_decoder"
1891 tiff_decoder_suggest="zlib"
1892 tiff_encoder_suggest="zlib"
1893 thp_decoder_select="dsputil hpeldsp exif"
1894 truehd_decoder_select="mlp_parser"
1895 truemotion2_decoder_select="dsputil"
1896 truespeech_decoder_select="dsputil"
1897 tscc_decoder_select="zlib"
1898 twinvq_decoder_select="mdct lsp sinewin"
1899 utvideo_decoder_select="dsputil"
1900 utvideo_encoder_select="dsputil huffman"
1901 vble_decoder_select="dsputil"
1902 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1903 vc1image_decoder_select="vc1_decoder"
1904 vorbis_decoder_select="mdct"
1905 vorbis_encoder_select="mdct"
1906 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1907 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1908 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1909 vp6a_decoder_select="vp6_decoder"
1910 vp6f_decoder_select="vp6_decoder"
1911 vp8_decoder_select="h264pred videodsp"
1912 vp9_decoder_select="videodsp"
1913 webp_decoder_select="vp8_decoder"
1914 wmapro_decoder_select="mdct sinewin"
1915 wmav1_decoder_select="mdct sinewin"
1916 wmav1_encoder_select="mdct sinewin"
1917 wmav2_decoder_select="mdct sinewin"
1918 wmav2_encoder_select="mdct sinewin"
1919 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1920 wmv1_decoder_select="h263_decoder"
1921 wmv1_encoder_select="h263_encoder"
1922 wmv2_decoder_select="h263_decoder videodsp"
1923 wmv2_encoder_select="h263_encoder"
1924 wmv3_decoder_select="vc1_decoder"
1925 wmv3image_decoder_select="wmv3_decoder"
1926 zerocodec_decoder_select="zlib"
1927 zlib_decoder_select="zlib"
1928 zlib_encoder_select="zlib"
1929 zmbv_decoder_select="zlib"
1930 zmbv_encoder_select="zlib"
1931
1932 # hardware accelerators
1933 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1934 dxva2_deps="dxva2api_h"
1935 vaapi_deps="va_va_h"
1936 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1937 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1938 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1939
1940 h263_vaapi_hwaccel_deps="vaapi"
1941 h263_vaapi_hwaccel_select="h263_decoder"
1942 h263_vdpau_hwaccel_deps="vdpau"
1943 h263_vdpau_hwaccel_select="h263_decoder"
1944 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1945 h264_dxva2_hwaccel_deps="dxva2"
1946 h264_dxva2_hwaccel_select="h264_decoder"
1947 h264_vaapi_hwaccel_deps="vaapi"
1948 h264_vaapi_hwaccel_select="h264_decoder"
1949 h264_vda_decoder_deps="vda"
1950 h264_vda_decoder_select="h264_decoder"
1951 h264_vda_hwaccel_deps="vda"
1952 h264_vda_hwaccel_select="h264_decoder"
1953 h264_vdpau_decoder_deps="vdpau"
1954 h264_vdpau_decoder_select="h264_decoder"
1955 h264_vdpau_hwaccel_deps="vdpau"
1956 h264_vdpau_hwaccel_select="h264_decoder"
1957 mpeg_vdpau_decoder_deps="vdpau"
1958 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1959 mpeg1_vdpau_decoder_deps="vdpau"
1960 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1961 mpeg1_vdpau_hwaccel_deps="vdpau"
1962 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1963 mpeg2_crystalhd_decoder_select="crystalhd"
1964 mpeg2_dxva2_hwaccel_deps="dxva2"
1965 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1966 mpeg2_vaapi_hwaccel_deps="vaapi"
1967 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1968 mpeg2_vdpau_hwaccel_deps="vdpau"
1969 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1970 mpeg4_crystalhd_decoder_select="crystalhd"
1971 mpeg4_vaapi_hwaccel_deps="vaapi"
1972 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1973 mpeg4_vdpau_decoder_deps="vdpau"
1974 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1975 mpeg4_vdpau_hwaccel_deps="vdpau"
1976 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1977 msmpeg4_crystalhd_decoder_select="crystalhd"
1978 vc1_crystalhd_decoder_select="crystalhd"
1979 vc1_dxva2_hwaccel_deps="dxva2"
1980 vc1_dxva2_hwaccel_select="vc1_decoder"
1981 vc1_vaapi_hwaccel_deps="vaapi"
1982 vc1_vaapi_hwaccel_select="vc1_decoder"
1983 vc1_vdpau_decoder_deps="vdpau"
1984 vc1_vdpau_decoder_select="vc1_decoder"
1985 vc1_vdpau_hwaccel_deps="vdpau"
1986 vc1_vdpau_hwaccel_select="vc1_decoder"
1987 wmv3_crystalhd_decoder_select="crystalhd"
1988 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1989 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1990 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1991 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1992
1993 # parsers
1994 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1995 mpeg4video_parser_select="error_resilience mpegvideo"
1996 mpegvideo_parser_select="error_resilience mpegvideo"
1997 vc1_parser_select="mpegvideo"
1998
1999 # external libraries
2000 libaacplus_encoder_deps="libaacplus"
2001 libcelt_decoder_deps="libcelt"
2002 libfaac_encoder_deps="libfaac"
2003 libfaac_encoder_select="audio_frame_queue"
2004 libfdk_aac_decoder_deps="libfdk_aac"
2005 libfdk_aac_encoder_deps="libfdk_aac"
2006 libfdk_aac_encoder_select="audio_frame_queue"
2007 libgme_demuxer_deps="libgme"
2008 libgsm_decoder_deps="libgsm"
2009 libgsm_encoder_deps="libgsm"
2010 libgsm_ms_decoder_deps="libgsm"
2011 libgsm_ms_encoder_deps="libgsm"
2012 libilbc_decoder_deps="libilbc"
2013 libilbc_encoder_deps="libilbc"
2014 libmodplug_demuxer_deps="libmodplug"
2015 libmp3lame_encoder_deps="libmp3lame"
2016 libmp3lame_encoder_select="audio_frame_queue"
2017 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2018 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2019 libopencore_amrnb_encoder_select="audio_frame_queue"
2020 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2021 libopenjpeg_decoder_deps="libopenjpeg"
2022 libopenjpeg_encoder_deps="libopenjpeg"
2023 libopus_decoder_deps="libopus"
2024 libopus_encoder_deps="libopus"
2025 libopus_encoder_select="audio_frame_queue"
2026 libquvi_demuxer_deps="libquvi"
2027 libschroedinger_decoder_deps="libschroedinger"
2028 libschroedinger_encoder_deps="libschroedinger"
2029 libshine_encoder_deps="libshine"
2030 libshine_encoder_select="audio_frame_queue"
2031 libspeex_decoder_deps="libspeex"
2032 libspeex_encoder_deps="libspeex"
2033 libspeex_encoder_select="audio_frame_queue"
2034 libstagefright_h264_decoder_deps="libstagefright_h264"
2035 libtheora_encoder_deps="libtheora"
2036 libtwolame_encoder_deps="libtwolame"
2037 libvo_aacenc_encoder_deps="libvo_aacenc"
2038 libvo_aacenc_encoder_select="audio_frame_queue"
2039 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2040 libvorbis_decoder_deps="libvorbis"
2041 libvorbis_encoder_deps="libvorbis"
2042 libvorbis_encoder_select="audio_frame_queue"
2043 libvpx_vp8_decoder_deps="libvpx"
2044 libvpx_vp8_encoder_deps="libvpx"
2045 libvpx_vp9_decoder_deps="libvpx"
2046 libvpx_vp9_encoder_deps="libvpx"
2047 libwavpack_encoder_deps="libwavpack"
2048 libx264_encoder_deps="libx264"
2049 libx264rgb_encoder_deps="libx264"
2050 libxavs_encoder_deps="libxavs"
2051 libxvid_encoder_deps="libxvid"
2052 libutvideo_decoder_deps="libutvideo"
2053 libutvideo_encoder_deps="libutvideo"
2054 libzvbi_teletext_decoder_deps="libzvbi"
2055
2056 # demuxers / muxers
2057 ac3_demuxer_select="ac3_parser"
2058 asf_demuxer_select="riffdec"
2059 asf_muxer_select="riffenc"
2060 asf_stream_muxer_select="asf_muxer"
2061 avi_demuxer_select="riffdec"
2062 avi_muxer_select="riffenc"
2063 avisynth_demuxer_deps="avisynth"
2064 avisynth_demuxer_select="riffdec"
2065 caf_demuxer_select="riffdec"
2066 dirac_demuxer_select="dirac_parser"
2067 dts_demuxer_select="dca_parser"
2068 dtshd_demuxer_select="dca_parser"
2069 dxa_demuxer_select="riffdec"
2070 eac3_demuxer_select="ac3_parser"
2071 f4v_muxer_select="mov_muxer"
2072 flac_demuxer_select="flac_parser"
2073 hls_muxer_select="mpegts_muxer"
2074 ipod_muxer_select="mov_muxer"
2075 ismv_muxer_select="mov_muxer"
2076 libnut_demuxer_deps="libnut"
2077 libnut_muxer_deps="libnut"
2078 matroska_audio_muxer_select="matroska_muxer"
2079 matroska_demuxer_select="riffdec"
2080 matroska_demuxer_suggest="bzlib lzo zlib"
2081 matroska_muxer_select="riffenc"
2082 mmf_muxer_select="riffenc"
2083 mov_demuxer_select="riffdec"
2084 mov_demuxer_suggest="zlib"
2085 mov_muxer_select="riffenc rtpenc_chain"
2086 mp3_demuxer_select="mpegaudio_parser"
2087 mp4_muxer_select="mov_muxer"
2088 mpegts_muxer_select="adts_muxer latm_muxer"
2089 mpegtsraw_demuxer_select="mpegts_demuxer"
2090 mxf_d10_muxer_select="mxf_muxer"
2091 nut_muxer_select="riffenc"
2092 nuv_demuxer_select="riffdec"
2093 ogg_demuxer_select="golomb"
2094 psp_muxer_select="mov_muxer"
2095 rtp_demuxer_select="sdp_demuxer"
2096 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2097 rtsp_demuxer_select="http_protocol rtpdec"
2098 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2099 sap_demuxer_select="sdp_demuxer"
2100 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2101 sdp_demuxer_select="rtpdec"
2102 smoothstreaming_muxer_select="ismv_muxer"
2103 spdif_muxer_select="aac_parser"
2104 tak_demuxer_select="tak_parser"
2105 tg2_muxer_select="mov_muxer"
2106 tgp_muxer_select="mov_muxer"
2107 vobsub_demuxer_select="mpegps_demuxer"
2108 w64_demuxer_select="wav_demuxer"
2109 w64_muxer_select="wav_muxer"
2110 wav_demuxer_select="riffdec"
2111 wav_muxer_select="riffenc"
2112 webm_muxer_select="riffenc"
2113 wtv_demuxer_select="riffdec"
2114 xmv_demuxer_select="riffdec"
2115 xwma_demuxer_select="riffdec"
2116
2117 # indevs / outdevs
2118 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2119 alsa_outdev_deps="alsa_asoundlib_h"
2120 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2121 caca_outdev_deps="libcaca"
2122 dshow_indev_deps="IBaseFilter"
2123 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2124 dv1394_indev_deps="dv1394"
2125 dv1394_indev_select="dv_demuxer"
2126 fbdev_indev_deps="linux_fb_h"
2127 iec61883_indev_deps="libiec61883"
2128 jack_indev_deps="jack_jack_h sem_timedwait"
2129 lavfi_indev_deps="avfilter"
2130 libcdio_indev_deps="libcdio"
2131 libdc1394_indev_deps="libdc1394"
2132 libv4l2_indev_deps="libv4l2"
2133 openal_indev_deps="openal"
2134 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2135 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2136 pulse_indev_deps="libpulse"
2137 sdl_outdev_deps="sdl"
2138 sndio_indev_deps="sndio_h"
2139 sndio_outdev_deps="sndio_h"
2140 v4l_indev_deps="linux_videodev_h"
2141 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2142 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2143 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2144 vfwcap_indev_extralibs="-lavicap32"
2145 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2146 xv_outdev_extralibs="-lXv -lX11 -lXext"
2147 x11grab_indev_deps="x11grab"
2148
2149 # protocols
2150 bluray_protocol_deps="libbluray"
2151 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2152 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2153 ffrtmpcrypt_protocol_select="tcp_protocol"
2154 ffrtmphttp_protocol_deps="!librtmp_protocol"
2155 ffrtmphttp_protocol_select="http_protocol"
2156 ftp_protocol_select="tcp_protocol"
2157 gopher_protocol_select="network"
2158 httpproxy_protocol_select="tcp_protocol"
2159 http_protocol_select="tcp_protocol"
2160 https_protocol_select="tls_protocol"
2161 librtmp_protocol_deps="librtmp"
2162 librtmpe_protocol_deps="librtmp"
2163 librtmps_protocol_deps="librtmp"
2164 librtmpt_protocol_deps="librtmp"
2165 librtmpte_protocol_deps="librtmp"
2166 libssh_protocol_deps="libssh"
2167 mmsh_protocol_select="http_protocol"
2168 mmst_protocol_select="network"
2169 rtmp_protocol_deps="!librtmp_protocol"
2170 rtmp_protocol_select="tcp_protocol"
2171 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2172 rtmps_protocol_deps="!librtmp_protocol"
2173 rtmps_protocol_select="tls_protocol"
2174 rtmpt_protocol_select="ffrtmphttp_protocol"
2175 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2176 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2177 rtp_protocol_select="udp_protocol"
2178 sctp_protocol_deps="struct_sctp_event_subscribe"
2179 sctp_protocol_select="network"
2180 srtp_protocol_select="rtp_protocol"
2181 tcp_protocol_select="network"
2182 tls_protocol_deps_any="openssl gnutls"
2183 tls_protocol_select="tcp_protocol"
2184 udp_protocol_select="network"
2185 unix_protocol_deps="sys_un_h"
2186 unix_protocol_select="network"
2187
2188 # filters
2189 aconvert_filter_deps="swresample"
2190 amovie_filter_deps="avcodec avformat"
2191 aresample_filter_deps="swresample"
2192 ass_filter_deps="libass"
2193 asyncts_filter_deps="avresample"
2194 atempo_filter_deps="avcodec"
2195 atempo_filter_select="rdft"
2196 azmq_filter_deps="libzmq"
2197 blackframe_filter_deps="gpl"
2198 boxblur_filter_deps="gpl"
2199 colormatrix_filter_deps="gpl"
2200 cropdetect_filter_deps="gpl"
2201 dctdnoiz_filter_deps="avcodec"
2202 dctdnoiz_filter_select="fft"
2203 delogo_filter_deps="gpl"
2204 deshake_filter_deps="avcodec"
2205 deshake_filter_select="dsputil"
2206 drawtext_filter_deps="libfreetype"
2207 ebur128_filter_deps="gpl"
2208 flite_filter_deps="libflite"
2209 frei0r_filter_deps="frei0r dlopen"
2210 frei0r_filter_extralibs='$ldl'
2211 frei0r_src_filter_deps="frei0r dlopen"
2212 frei0r_src_filter_extralibs='$ldl'
2213 geq_filter_deps="gpl"
2214 histeq_filter_deps="gpl"
2215 hqdn3d_filter_deps="gpl"
2216 interlace_filter_deps="gpl"
2217 kerndeint_filter_deps="gpl"
2218 ladspa_filter_deps="ladspa dlopen"
2219 mcdeint_filter_deps="avcodec gpl"
2220 movie_filter_deps="avcodec avformat"
2221 mp_filter_deps="gpl avcodec swscale inline_asm"
2222 mpdecimate_filter_deps="gpl avcodec"
2223 mptestsrc_filter_deps="gpl"
2224 negate_filter_deps="lut_filter"
2225 noise_filter_deps="gpl"
2226 perspective_filter_deps="gpl"
2227 resample_filter_deps="avresample"
2228 ocv_filter_deps="libopencv"
2229 owdenoise_filter_deps="gpl"
2230 pan_filter_deps="swresample"
2231 phase_filter_deps="gpl"
2232 pp_filter_deps="gpl postproc"
2233 pullup_filter_deps="gpl"
2234 removelogo_filter_deps="avcodec avformat swscale"
2235 sab_filter_deps="gpl swscale"
2236 scale_filter_deps="swscale"
2237 smartblur_filter_deps="gpl swscale"
2238 showspectrum_filter_deps="avcodec"
2239 showspectrum_filter_select="rdft"
2240 spp_filter_deps="gpl avcodec"
2241 spp_filter_select="fft"
2242 stereo3d_filter_deps="gpl"
2243 subtitles_filter_deps="avformat avcodec libass"
2244 super2xsai_filter_deps="gpl"
2245 tinterlace_filter_deps="gpl"
2246 vidstabdetect_filter_deps="libvidstab"
2247 vidstabtransform_filter_deps="libvidstab"
2248 yadif_filter_deps="gpl"
2249 pixfmts_super2xsai_test_deps="super2xsai_filter"
2250 tinterlace_merge_test_deps="tinterlace_filter"
2251 tinterlace_pad_test_deps="tinterlace_filter"
2252 zmq_filter_deps="libzmq"
2253
2254 # libraries
2255 avcodec_deps="avutil"
2256 avdevice_deps="avutil avcodec avformat"
2257 avfilter_deps="avutil"
2258 avformat_deps="avutil avcodec"
2259 avresample_deps="avutil"
2260 postproc_deps="avutil gpl"
2261 swscale_deps="avutil"
2262
2263 # programs
2264 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2265 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2266                null_filter
2267                setpts_filter trim_filter"
2268 ffplay_deps="avcodec avformat swscale swresample sdl"
2269 ffplay_select="rdft crop_filter"
2270 ffprobe_deps="avcodec avformat"
2271 ffserver_deps="avformat fork sarestart"
2272 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2273 ffserver_extralibs='$ldl'
2274
2275 # documentation
2276 podpages_deps="perl"
2277 manpages_deps="perl pod2man"
2278 htmlpages_deps="texi2html"
2279 txtpages_deps="makeinfo"
2280 doc_deps_any="manpages htmlpages podpages txtpages"
2281
2282 # default parameters
2283
2284 logfile="config.log"
2285
2286 # installation paths
2287 prefix_default="/usr/local"
2288 bindir_default='${prefix}/bin'
2289 datadir_default='${prefix}/share/ffmpeg'
2290 docdir_default='${prefix}/share/doc/ffmpeg'
2291 incdir_default='${prefix}/include'
2292 libdir_default='${prefix}/lib'
2293 mandir_default='${prefix}/share/man'
2294 shlibdir_default="$libdir_default"
2295
2296 # toolchain
2297 ar_default="ar"
2298 cc_default="gcc"
2299 cxx_default="g++"
2300 host_cc_default="gcc"
2301 cp_f="cp -f"
2302 install="install"
2303 ln_s="ln -s -f"
2304 nm_default="nm -g"
2305 objformat="elf"
2306 pkg_config_default=pkg-config
2307 ranlib="ranlib"
2308 strip_default="strip"
2309 yasmexe_default="yasm"
2310
2311 nogas=":"
2312
2313 # machine
2314 arch_default=$(uname -m)
2315 cpu="generic"
2316
2317 # OS
2318 target_os_default=$(tolower $(uname -s))
2319 host_os=$target_os_default
2320
2321 # configurable options
2322 enable $PROGRAM_LIST
2323 enable $DOCUMENT_LIST
2324 enable $(filter_out avresample $LIBRARY_LIST)
2325 enable stripping
2326
2327 enable asm
2328 enable debug
2329 enable doc
2330 enable optimizations
2331 enable runtime_cpudetect
2332 enable safe_bitstream_reader
2333 enable static
2334 enable swscale_alpha
2335
2336 # Enable hwaccels by default.
2337 enable dxva2 vaapi vdpau
2338
2339 # build settings
2340 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2341 LIBPREF="lib"
2342 LIBSUF=".a"
2343 FULLNAME='$(NAME)$(BUILDSUF)'
2344 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2345 SLIBPREF="lib"
2346 SLIBSUF=".so"
2347 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2348 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2349 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2350 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2351 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2352 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2353
2354 asflags_filter=echo
2355 cflags_filter=echo
2356 ldflags_filter=echo
2357
2358 AS_C='-c'
2359 AS_O='-o $@'
2360 CC_C='-c'
2361 CC_E='-E -o $@'
2362 CC_O='-o $@'
2363 CXX_C='-c'
2364 CXX_O='-o $@'
2365 LD_O='-o $@'
2366 LD_LIB='-l%'
2367 LD_PATH='-L'
2368 HOSTCC_C='-c'
2369 HOSTCC_O='-o $@'
2370 HOSTLD_O='-o $@'
2371
2372 host_cflags='-O3 -g'
2373 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2374 host_libs='-lm'
2375 host_cflags_filter=echo
2376 host_ldflags_filter=echo
2377
2378 target_path='$(CURDIR)'
2379
2380 # since the object filename is not given with the -MM flag, the compiler
2381 # is only able to print the basename, and we must add the path ourselves
2382 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2383 DEPFLAGS='-MM'
2384
2385 # find source path
2386 if test -f configure; then
2387     source_path=.
2388 else
2389     source_path=$(cd $(dirname "$0"); pwd)
2390     echo "$source_path" | grep -q '[[:blank:]]' &&
2391         die "Out of tree builds are impossible with whitespace in source path."
2392     test -e "$source_path/config.h" &&
2393         die "Out of tree builds are impossible with config.h in source dir."
2394 fi
2395
2396 for v in "$@"; do
2397     r=${v#*=}
2398     l=${v%"$r"}
2399     r=$(sh_quote "$r")
2400     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2401 done
2402
2403 find_things(){
2404     thing=$1
2405     pattern=$2
2406     file=$source_path/$3
2407     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2408 }
2409
2410 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2411 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2412 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2413 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2414 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2415 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2416 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2417 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2418 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2419 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2420 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2421
2422 ALL_COMPONENTS="
2423     $BSF_LIST
2424     $DECODER_LIST
2425     $DEMUXER_LIST
2426     $ENCODER_LIST
2427     $FILTER_LIST
2428     $HWACCEL_LIST
2429     $INDEV_LIST
2430     $MUXER_LIST
2431     $OUTDEV_LIST
2432     $PARSER_LIST
2433     $PROTOCOL_LIST
2434 "
2435
2436 for n in $COMPONENT_LIST; do
2437     v=$(toupper ${n%s})_LIST
2438     eval enable \$$v
2439     eval ${n}_if_any="\$$v"
2440 done
2441
2442 enable $ARCH_EXT_LIST
2443
2444 die_unknown(){
2445     echo "Unknown option \"$1\"."
2446     echo "See $0 --help for available options."
2447     exit 1
2448 }
2449
2450 print_3_columns() {
2451     cat | tr ' ' '\n' | sort | pr -r -3 -t
2452 }
2453
2454 show_list() {
2455     suffix=_$1
2456     shift
2457     echo $* | sed s/$suffix//g | print_3_columns
2458     exit 0
2459 }
2460
2461 rand_list(){
2462     IFS=', '
2463     set -- $*
2464     unset IFS
2465     for thing; do
2466         comp=${thing%:*}
2467         prob=${thing#$comp}
2468         prob=${prob#:}
2469         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2470         echo "prob ${prob:-0.5}"
2471         printf '%s\n' $comp
2472     done
2473 }
2474
2475 do_random(){
2476     action=$1
2477     shift
2478     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2479     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2480 }
2481
2482 for opt do
2483     optval="${opt#*=}"
2484     case "$opt" in
2485         --extra-ldflags=*)
2486             add_ldflags $optval
2487         ;;
2488         --extra-libs=*)
2489             add_extralibs $optval
2490         ;;
2491         --disable-devices)
2492             disable $INDEV_LIST $OUTDEV_LIST
2493         ;;
2494         --enable-debug=*)
2495             debuglevel="$optval"
2496         ;;
2497         --disable-programs)
2498             disable $PROGRAM_LIST
2499         ;;
2500         --disable-everything)
2501             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2502         ;;
2503         --disable-all)
2504             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2505             disable $LIBRARY_LIST $PROGRAM_LIST doc
2506         ;;
2507         --enable-random|--disable-random)
2508             action=${opt%%-random}
2509             do_random ${action#--} $COMPONENT_LIST
2510         ;;
2511         --enable-random=*|--disable-random=*)
2512             action=${opt%%-random=*}
2513             do_random ${action#--} $optval
2514         ;;
2515         --enable-*=*|--disable-*=*)
2516             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2517             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2518             eval list=\$$(toupper $thing)_LIST
2519             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2520             list=$(filter "$name" $list)
2521             [ "$list" = "" ] && warn "Option $opt did not match anything"
2522             $action $list
2523         ;;
2524         --enable-?*|--disable-?*)
2525             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2526             if is_in $option $COMPONENT_LIST; then
2527                 test $action = disable && action=unset
2528                 eval $action \$$(toupper ${option%s})_LIST
2529             elif is_in $option $CMDLINE_SELECT; then
2530                 $action $option
2531             else
2532                 die_unknown $opt
2533             fi
2534         ;;
2535         --list-*)
2536             NAME="${opt#--list-}"
2537             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2538             NAME=${NAME%s}
2539             eval show_list $NAME \$$(toupper $NAME)_LIST
2540         ;;
2541         --help|-h) show_help
2542         ;;
2543         --fatal-warnings) enable fatal_warnings
2544         ;;
2545         *)
2546             optname="${opt%%=*}"
2547             optname="${optname#--}"
2548             optname=$(echo "$optname" | sed 's/-/_/g')
2549             if is_in $optname $CMDLINE_SET; then
2550                 eval $optname='$optval'
2551             elif is_in $optname $CMDLINE_APPEND; then
2552                 append $optname "$optval"
2553             else
2554                 die_unknown $opt
2555             fi
2556         ;;
2557     esac
2558 done
2559
2560 disabled logging && logfile=/dev/null
2561
2562 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2563 set >> $logfile
2564
2565 test -n "$cross_prefix" && enable cross_compile
2566
2567 if enabled cross_compile; then
2568     test -n "$arch" && test -n "$target_os" ||
2569         die "Must specify target arch and OS when cross-compiling"
2570 fi
2571
2572 ar_default="${cross_prefix}${ar_default}"
2573 cc_default="${cross_prefix}${cc_default}"
2574 cxx_default="${cross_prefix}${cxx_default}"
2575 nm_default="${cross_prefix}${nm_default}"
2576 pkg_config_default="${cross_prefix}${pkg_config_default}"
2577 ranlib="${cross_prefix}${ranlib}"
2578 strip_default="${cross_prefix}${strip_default}"
2579
2580 sysinclude_default="${sysroot}/usr/include"
2581
2582 test -n "$valgrind" && toolchain="valgrind-memcheck"
2583
2584 case "$toolchain" in
2585     clang-asan)
2586         cc_default="clang"
2587         add_cflags  -fsanitize=address
2588         add_ldflags -fsanitize=address
2589     ;;
2590     clang-tsan)
2591         cc_default="clang"
2592         add_cflags  -fsanitize=thread -pie
2593         add_ldflags -fsanitize=thread -pie
2594     ;;
2595     gcc-asan)
2596         cc_default="gcc"
2597         add_cflags  -fsanitize=address
2598         add_ldflags -fsanitize=address
2599     ;;
2600     gcc-tsan)
2601         cc_default="gcc"
2602         add_cflags  -fsanitize=thread -pie -fPIC
2603         add_ldflags -fsanitize=thread -pie -fPIC
2604     ;;
2605     valgrind-massif)
2606         target_exec_default=${valgrind:-"valgrind"}
2607         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"
2608     ;;
2609     valgrind-memcheck)
2610         target_exec_default=${valgrind:-"valgrind"}
2611         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2612     ;;
2613     msvc)
2614         cc_default="c99wrap cl"
2615         ld_default="c99wrap link"
2616         nm_default="dumpbin -symbols"
2617         ar_default="lib"
2618         target_os_default="win32"
2619     ;;
2620     icl)
2621         cc_default="c99wrap -noconv icl"
2622         ld_default="c99wrap xilink"
2623         nm_default="dumpbin -symbols"
2624         ar_default="xilib"
2625         target_os_default="win32"
2626     ;;
2627     gcov)
2628         add_cflags  -fprofile-arcs -ftest-coverage
2629         add_ldflags -fprofile-arcs -ftest-coverage
2630     ;;
2631     ?*)
2632         die "Unknown toolchain $toolchain"
2633     ;;
2634 esac
2635
2636 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2637 enabled cross_compile || host_cc_default=$cc
2638 set_default host_cc
2639
2640 if ! $pkg_config --version >/dev/null 2>&1; then
2641     warn "$pkg_config not found, library detection may fail."
2642     pkg_config=false
2643 fi
2644
2645 exesuf() {
2646     case $1 in
2647         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2648     esac
2649 }
2650
2651 EXESUF=$(exesuf $target_os)
2652 HOSTEXESUF=$(exesuf $host_os)
2653
2654 # set temporary file name
2655 : ${TMPDIR:=$TEMPDIR}
2656 : ${TMPDIR:=$TMP}
2657 : ${TMPDIR:=/tmp}
2658
2659 if [ -n "$tempprefix" ] ; then
2660     mktemp(){
2661         echo $tempprefix.${HOSTNAME}.${UID}
2662     }
2663 elif ! check_cmd mktemp -u XXXXXX; then
2664     # simple replacement for missing mktemp
2665     # NOT SAFE FOR GENERAL USE
2666     mktemp(){
2667         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2668     }
2669 fi
2670
2671 tmpfile(){
2672     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2673         (set -C; exec > $tmp) 2>/dev/null ||
2674         die "Unable to create temporary file in $TMPDIR."
2675     append TMPFILES $tmp
2676     eval $1=$tmp
2677 }
2678
2679 trap 'rm -f -- $TMPFILES' EXIT
2680
2681 tmpfile TMPASM .asm
2682 tmpfile TMPC   .c
2683 tmpfile TMPCPP .cpp
2684 tmpfile TMPE   $EXESUF
2685 tmpfile TMPH   .h
2686 tmpfile TMPO   .o
2687 tmpfile TMPS   .S
2688 tmpfile TMPSH  .sh
2689 tmpfile TMPV   .ver
2690
2691 unset -f mktemp
2692
2693 chmod +x $TMPE
2694
2695 # make sure we can execute files in $TMPDIR
2696 cat > $TMPSH 2>> $logfile <<EOF
2697 #! /bin/sh
2698 EOF
2699 chmod +x $TMPSH >> $logfile 2>&1
2700 if ! $TMPSH >> $logfile 2>&1; then
2701     cat <<EOF
2702 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2703 variable to another directory and make sure that it is not mounted noexec.
2704 EOF
2705     die "Sanity test failed."
2706 fi
2707
2708 ccc_flags(){
2709     for flag; do
2710         case $flag in
2711             -std=c99)           echo -c99                       ;;
2712             -mcpu=*)            echo -arch ${flag#*=}           ;;
2713             -mieee)             echo -ieee                      ;;
2714             -O*|-fast)          echo $flag                      ;;
2715             -fno-math-errno)    echo -assume nomath_errno       ;;
2716             -g)                 echo -g3                        ;;
2717             -Wall)              echo -msg_enable level2         ;;
2718             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2719             -Wl,*)              echo $flag                      ;;
2720             -f*|-W*)                                            ;;
2721             *)                  echo $flag                      ;;
2722         esac
2723    done
2724 }
2725
2726 cparser_flags(){
2727     for flag; do
2728         case $flag in
2729             -Wno-switch)             echo -Wno-switch-enum ;;
2730             -Wno-format-zero-length) ;;
2731             -Wdisabled-optimization) ;;
2732             -Wno-pointer-sign)       echo -Wno-other ;;
2733             *)                       echo $flag ;;
2734         esac
2735     done
2736 }
2737
2738 msvc_common_flags(){
2739     for flag; do
2740         case $flag in
2741             # In addition to specifying certain flags under the compiler
2742             # specific filters, they must be specified here as well or else the
2743             # generic catch all at the bottom will print the original flag.
2744             -Wall)                ;;
2745             -std=c99)             ;;
2746             # Common flags
2747             -fomit-frame-pointer) ;;
2748             -g)                   echo -Z7 ;;
2749             -fno-math-errno)      ;;
2750             -fno-common)          ;;
2751             -fno-signed-zeros)    ;;
2752             -fPIC)                ;;
2753             -mthumb)              ;;
2754             -march=*)             ;;
2755             -lz)                  echo zlib.lib ;;
2756             -lavifil32)           echo vfw32.lib ;;
2757             -lavicap32)           echo vfw32.lib user32.lib ;;
2758             -l*)                  echo ${flag#-l}.lib ;;
2759             *)                    echo $flag ;;
2760         esac
2761     done
2762 }
2763
2764 msvc_flags(){
2765     msvc_common_flags "$@"
2766     for flag; do
2767         case $flag in
2768             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2769                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2770                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2771                                        -wd4554 \
2772                                        -wd4273 ;;
2773         esac
2774     done
2775 }
2776
2777 icl_flags(){
2778     msvc_common_flags "$@"
2779     for flag; do
2780         case $flag in
2781             # Despite what Intel's documentation says -Wall, which is supported
2782             # on Windows, does enable remarks so disable them here.
2783             -Wall)                echo $flag -Qdiag-disable:remark ;;
2784             -std=c99)             echo -Qstd=c99 ;;
2785         esac
2786     done
2787 }
2788
2789 pgi_flags(){
2790     for flag; do
2791         case $flag in
2792             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2793             -fomit-frame-pointer) echo -Mnoframe ;;
2794             -g)                   echo -gopt ;;
2795             *)                    echo $flag ;;
2796         esac
2797     done
2798 }
2799
2800 suncc_flags(){
2801     for flag; do
2802         case $flag in
2803             -march=*|-mcpu=*)
2804                 case "${flag#*=}" in
2805                     native)                   echo -xtarget=native       ;;
2806                     v9|niagara)               echo -xarch=sparc          ;;
2807                     ultrasparc)               echo -xarch=sparcvis       ;;
2808                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2809                     i586|pentium)             echo -xchip=pentium        ;;
2810                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2811                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2812                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2813                     pentium4*)          echo -xtarget=pentium4           ;;
2814                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2815                     *-sse3)             echo -xarch=sse3                 ;;
2816                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2817                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2818                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2819                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2820                     bdver*)                    echo -xarch=avx           ;;
2821                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2822                     k8|opteron|athlon64|athlon-fx)
2823                                                echo -xarch=sse2a         ;;
2824                     athlon*)                   echo -xarch=pentium_proa  ;;
2825                 esac
2826                 ;;
2827             -std=c99)             echo -xc99              ;;
2828             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2829             -fPIC)                echo -KPIC -xcode=pic32 ;;
2830             -W*,*)                echo $flag              ;;
2831             -f*-*|-W*|-mimpure-text)                      ;;
2832             -shared)              echo -G                 ;;
2833             *)                    echo $flag              ;;
2834         esac
2835     done
2836 }
2837
2838 tms470_flags(){
2839     for flag; do
2840         case $flag in
2841             -march=*|-mcpu=*)
2842                 case "${flag#*=}" in
2843                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2844                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2845                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2846                     armv6*|arm11*)          echo -mv=6   ;;
2847                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2848                                             echo -mv=5e  ;;
2849                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2850                 esac
2851                 ;;
2852             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2853             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2854             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2855             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2856             -msoft-float)   echo --float_support=vfplib       ;;
2857             -O[0-3]|-mf=*)  echo $flag                        ;;
2858             -g)             echo -g -mn                       ;;
2859             -pds=*)         echo $flag                        ;;
2860             -D*|-I*)        echo $flag                        ;;
2861             --gcc|--abi=*)  echo $flag                        ;;
2862             -me)            echo $flag                        ;;
2863         esac
2864     done
2865 }
2866
2867 probe_cc(){
2868     pfx=$1
2869     _cc=$2
2870
2871     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2872     unset _ld_o _ldflags _ld_lib _ld_path
2873     unset _depflags _DEPCMD _DEPFLAGS
2874     _flags_filter=echo
2875
2876     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2877         _type=llvm_gcc
2878         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2879         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2880         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2881         _cflags_speed='-O3'
2882         _cflags_size='-Os'
2883     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2884         _type=gcc
2885         gcc_version=$($_cc --version | head -n1)
2886         gcc_basever=$($_cc -dumpversion)
2887         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2888         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2889         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2890         if ! $_cc -dumpversion | grep -q '^2\.'; then
2891             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2892         fi
2893         _cflags_speed='-O3'
2894         _cflags_size='-Os'
2895     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2896         _type=icc
2897         _ident=$($_cc --version | head -n1)
2898         _depflags='-MMD'
2899         _cflags_speed='-O3'
2900         _cflags_size='-Os'
2901         _cflags_noopt='-O1'
2902     elif $_cc -v 2>&1 | grep -q xlc; then
2903         _type=xlc
2904         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2905         _cflags_speed='-O5'
2906         _cflags_size='-O5 -qcompact'
2907     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2908         _type=ccc
2909         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2910         _DEPFLAGS='-M'
2911         _cflags_speed='-fast'
2912         _cflags_size='-O1'
2913         _flags_filter=ccc_flags
2914     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2915         test -d "$sysroot" || die "No valid sysroot specified."
2916         _type=armcc
2917         _ident=$($_cc --vsn | head -n1)
2918         armcc_conf="$PWD/armcc.conf"
2919         $_cc --arm_linux_configure                 \
2920              --arm_linux_config_file="$armcc_conf" \
2921              --configure_sysroot="$sysroot"        \
2922              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2923              die "Error creating armcc configuration file."
2924         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2925         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2926         as_default="${cross_prefix}gcc"
2927         _depflags='-MMD'
2928         _cflags_speed='-O3'
2929         _cflags_size='-Os'
2930     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2931         _type=tms470
2932         _ident=$($_cc -version | head -n1 | tr -s ' ')
2933         _flags='--gcc --abi=eabi -me'
2934         _cc_e='-ppl -fe=$@'
2935         _cc_o='-fe=$@'
2936         _depflags='-ppa -ppd=$(@:.o=.d)'
2937         _cflags_speed='-O3 -mf=5'
2938         _cflags_size='-O3 -mf=2'
2939         _flags_filter=tms470_flags
2940     elif $_cc -v 2>&1 | grep -q clang; then
2941         _type=clang
2942         _ident=$($_cc --version | head -n1)
2943         _depflags='-MMD'
2944         _cflags_speed='-O3'
2945         _cflags_size='-Os'
2946     elif $_cc -V 2>&1 | grep -q Sun; then
2947         _type=suncc
2948         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2949         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2950         _DEPFLAGS='-xM1 -xc99'
2951         _ldflags='-std=c99'
2952         _cflags_speed='-O5'
2953         _cflags_size='-O5 -xspace'
2954         _flags_filter=suncc_flags
2955     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2956         _type=pathscale
2957         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2958         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2959         _cflags_speed='-O2'
2960         _cflags_size='-Os'
2961         _flags_filter='filter_out -Wdisabled-optimization'
2962     elif $_cc -v 2>&1 | grep -q Open64; then
2963         _type=open64
2964         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2965         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2966         _cflags_speed='-O2'
2967         _cflags_size='-Os'
2968         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2969     elif $_cc -V 2>&1 | grep -q Portland; then
2970         _type=pgi
2971         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2972         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2973         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2974         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2975         _cflags_noopt="-O"
2976         _flags_filter=pgi_flags
2977     elif $_cc 2>&1 | grep -q Microsoft; then
2978         _type=msvc
2979         _ident=$($cc 2>&1 | head -n1)
2980         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2981         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2982         _cflags_speed="-O2"
2983         _cflags_size="-O1"
2984         # Nonstandard output options, to avoid msys path conversion issues.
2985         # Relies on wrapper to remap it.
2986         if $_cc 2>&1 | grep -q Linker; then
2987             _ld_o='-out $@'
2988         else
2989             _ld_o='-Fe$@'
2990         fi
2991         _cc_o='-Fo $@'
2992         _cc_e='-P -Fi $@'
2993         _flags_filter=msvc_flags
2994         _ld_lib='lib%.a'
2995         _ld_path='-libpath:'
2996         _flags='-nologo'
2997         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2998         if [ $pfx = hostcc ]; then
2999             append _cflags -Dsnprintf=_snprintf
3000         fi
3001         disable stripping
3002     elif $_cc 2>&1 | grep -q Intel; then
3003         _type=icl
3004         _ident=$($cc 2>&1 | head -n1)
3005         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3006         # Not only is O3 broken on 13.x+ but it is slower on all previous
3007         # versions (tested) as well.
3008         _cflags_speed="-O2"
3009         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3010         # Nonstandard output options, to avoid msys path conversion issues.
3011         # Relies on wrapper to remap it.
3012         if $_cc 2>&1 | grep -q Linker; then
3013             _ld_o='-out $@'
3014         else
3015             _ld_o='-Fe$@'
3016         fi
3017         _cc_o='-Fo $@'
3018         _cc_e='-P'
3019         _flags_filter=icl_flags
3020         _ld_lib='lib%.a'
3021         _ld_path='-libpath:'
3022         # -Qdiag-error to make icl error when seeing certain unknown arguments
3023         _flags='-nologo -Qdiag-error:4044,10157'
3024         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3025         # with MSVC which enables it by default.
3026         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3027         if [ $pfx = hostcc ]; then
3028             append _cflags -Dsnprintf=_snprintf
3029         fi
3030     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3031         _type=cparser
3032         _ident=$($_cc --version | head -n1)
3033         _depflags='-MMD'
3034         _cflags_speed='-O4'
3035         _cflags_size='-O2'
3036         _flags_filter=cparser_flags
3037     fi
3038
3039     eval ${pfx}_type=\$_type
3040     eval ${pfx}_ident=\$_ident
3041 }
3042
3043 set_ccvars(){
3044     eval ${1}_C=\${_cc_c-\${${1}_C}}
3045     eval ${1}_E=\${_cc_e-\${${1}_E}}
3046     eval ${1}_O=\${_cc_o-\${${1}_O}}
3047
3048     if [ -n "$_depflags" ]; then
3049         eval ${1}_DEPFLAGS=\$_depflags
3050     else
3051         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3052         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3053         eval DEP${1}FLAGS=\$_flags
3054     fi
3055 }
3056
3057 probe_cc cc "$cc"
3058 cflags_filter=$_flags_filter
3059 cflags_speed=$_cflags_speed
3060 cflags_size=$_cflags_size
3061 cflags_noopt=$_cflags_noopt
3062 add_cflags $_flags $_cflags
3063 cc_ldflags=$_ldflags
3064 set_ccvars CC
3065
3066 probe_cc hostcc "$host_cc"
3067 host_cflags_filter=$_flags_filter
3068 add_host_cflags  $_flags $_cflags
3069 set_ccvars HOSTCC
3070
3071 test -n "$cc_type" && enable $cc_type ||
3072     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3073
3074 : ${as_default:=$cc}
3075 : ${dep_cc_default:=$cc}
3076 : ${ld_default:=$cc}
3077 : ${host_ld_default:=$host_cc}
3078 set_default ar as dep_cc ld host_ld
3079
3080 probe_cc as "$as"
3081 asflags_filter=$_flags_filter
3082 add_asflags $_flags $_cflags
3083 set_ccvars AS
3084
3085 probe_cc ld "$ld"
3086 ldflags_filter=$_flags_filter
3087 add_ldflags $_flags $_ldflags
3088 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3089 LD_O=${_ld_o-$LD_O}
3090 LD_LIB=${_ld_lib-$LD_LIB}
3091 LD_PATH=${_ld_path-$LD_PATH}
3092
3093 probe_cc hostld "$host_ld"
3094 host_ldflags_filter=$_flags_filter
3095 add_host_ldflags $_flags $_ldflags
3096 HOSTLD_O=${_ld_o-$HOSTLD_O}
3097
3098 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3099     probe_cc depcc "$dep_cc"
3100     CCDEP=${_DEPCMD:-$DEPCMD}
3101     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3102     DEPCCFLAGS=$_flags
3103 fi
3104
3105 if $ar 2>&1 | grep -q Microsoft; then
3106     arflags="-nologo"
3107     ar_o='-out:$@'
3108 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3109     arflags="rq"
3110     ar_o='$@'
3111 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3112     arflags='-Xany -r -c'
3113     ar_o='$@'
3114 else
3115     arflags="rc"
3116     ar_o='$@'
3117 fi
3118
3119 add_cflags $extra_cflags
3120 add_cxxflags $extra_cxxflags
3121 add_asflags $extra_cflags
3122
3123 if test -n "$sysroot"; then
3124     case "$cc_type" in
3125         gcc|llvm_gcc|clang)
3126             add_cppflags --sysroot="$sysroot"
3127             add_ldflags --sysroot="$sysroot"
3128         ;;
3129         tms470)
3130             add_cppflags -I"$sysinclude"
3131             add_ldflags  --sysroot="$sysroot"
3132         ;;
3133     esac
3134 fi
3135
3136 if test "$cpu" = host; then
3137     enabled cross_compile &&
3138         die "--cpu=host makes no sense when cross-compiling."
3139
3140     case "$cc_type" in
3141         gcc|llvm_gcc)
3142             check_native(){
3143                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3144                 sed -n "/cc1.*$1=/{
3145                             s/.*$1=\\([^ ]*\\).*/\\1/
3146                             p
3147                             q
3148                         }" $TMPE
3149             }
3150             cpu=$(check_native -march || check_native -mcpu)
3151         ;;
3152     esac
3153
3154     test "${cpu:-host}" = host &&
3155         die "--cpu=host not supported with compiler $cc"
3156 fi
3157
3158 # Deal with common $arch aliases
3159 case "$arch" in
3160     aarch64|arm64)
3161         arch="aarch64"
3162     ;;
3163     arm*|iPad*|iPhone*)
3164         arch="arm"
3165     ;;
3166     mips*|IP*)
3167         arch="mips"
3168     ;;
3169     parisc*|hppa*)
3170         arch="parisc"
3171     ;;
3172     "Power Macintosh"|ppc*|powerpc*)
3173         arch="ppc"
3174     ;;
3175     s390|s390x)
3176         arch="s390"
3177     ;;
3178     sh4|sh)
3179         arch="sh4"
3180     ;;
3181     sun4u|sparc*)
3182         arch="sparc"
3183     ;;
3184     tilegx|tile-gx)
3185         arch="tilegx"
3186     ;;
3187     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3188         arch="x86"
3189     ;;
3190 esac
3191
3192 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3193 enable $arch
3194
3195 # Add processor-specific flags
3196 if enabled aarch64; then
3197
3198     case $cpu in
3199         armv*)
3200             cpuflags="-march=$cpu"
3201         ;;
3202         *)
3203             cpuflags="-mcpu=$cpu"
3204         ;;
3205     esac
3206
3207 elif enabled alpha; then
3208
3209     cpuflags="-mcpu=$cpu"
3210
3211 elif enabled arm; then
3212
3213     check_arm_arch() {
3214         check_cpp_condition stddef.h \
3215             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3216             $cpuflags
3217     }
3218
3219     probe_arm_arch() {
3220         if   check_arm_arch 4;        then echo armv4;
3221         elif check_arm_arch 4T;       then echo armv4t;
3222         elif check_arm_arch 5;        then echo armv5;
3223         elif check_arm_arch 5E;       then echo armv5e;
3224         elif check_arm_arch 5T;       then echo armv5t;
3225         elif check_arm_arch 5TE;      then echo armv5te;
3226         elif check_arm_arch 5TEJ;     then echo armv5te;
3227         elif check_arm_arch 6;        then echo armv6;
3228         elif check_arm_arch 6J;       then echo armv6j;
3229         elif check_arm_arch 6K;       then echo armv6k;
3230         elif check_arm_arch 6Z;       then echo armv6z;
3231         elif check_arm_arch 6ZK;      then echo armv6zk;
3232         elif check_arm_arch 6T2;      then echo armv6t2;
3233         elif check_arm_arch 7;        then echo armv7;
3234         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3235         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3236         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3237         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3238         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3239         fi
3240     }
3241
3242     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3243
3244     case $cpu in
3245         armv*)
3246             cpuflags="-march=$cpu"
3247             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3248         ;;
3249         *)
3250             cpuflags="-mcpu=$cpu"
3251             case $cpu in
3252                 cortex-a*)                               subarch=armv7a  ;;
3253                 cortex-r*)                               subarch=armv7r  ;;
3254                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3255                 arm11*)                                  subarch=armv6   ;;
3256                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3257                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3258                 *)                             subarch=$(probe_arm_arch) ;;
3259             esac
3260         ;;
3261     esac
3262
3263     case "$subarch" in
3264         armv5t*)    enable fast_clz                ;;
3265         armv[6-8]*) enable fast_clz fast_unaligned ;;
3266     esac
3267
3268 elif enabled avr32; then
3269
3270     case $cpu in
3271         ap7[02]0[0-2])
3272             subarch="avr32_ap"
3273             cpuflags="-mpart=$cpu"
3274         ;;
3275         ap)
3276             subarch="avr32_ap"
3277             cpuflags="-march=$cpu"
3278         ;;
3279         uc3[ab]*)
3280             subarch="avr32_uc"
3281             cpuflags="-mcpu=$cpu"
3282         ;;
3283         uc)
3284             subarch="avr32_uc"
3285             cpuflags="-march=$cpu"
3286         ;;
3287     esac
3288
3289 elif enabled bfin; then
3290
3291     cpuflags="-mcpu=$cpu"
3292
3293 elif enabled mips; then
3294
3295     cpuflags="-march=$cpu"
3296
3297     case $cpu in
3298         24kc)
3299             disable mipsfpu
3300             disable mipsdspr1
3301             disable mipsdspr2
3302         ;;
3303         24kf*)
3304             disable mipsdspr1
3305             disable mipsdspr2
3306         ;;
3307         24kec|34kc|1004kc)
3308             disable mipsfpu
3309             disable mipsdspr2
3310         ;;
3311         24kef*|34kf*|1004kf*)
3312             disable mipsdspr2
3313         ;;
3314         74kc)
3315             disable mipsfpu
3316         ;;
3317     esac
3318
3319 elif enabled ppc; then
3320
3321     case $(tolower $cpu) in
3322         601|ppc601|powerpc601)
3323             cpuflags="-mcpu=601"
3324             disable altivec
3325         ;;
3326         603*|ppc603*|powerpc603*)
3327             cpuflags="-mcpu=603"
3328             disable altivec
3329         ;;
3330         604*|ppc604*|powerpc604*)
3331             cpuflags="-mcpu=604"
3332             disable altivec
3333         ;;
3334         g3|75*|ppc75*|powerpc75*)
3335             cpuflags="-mcpu=750"
3336             disable altivec
3337         ;;
3338         g4|745*|ppc745*|powerpc745*)
3339             cpuflags="-mcpu=7450"
3340         ;;
3341         74*|ppc74*|powerpc74*)
3342             cpuflags="-mcpu=7400"
3343         ;;
3344         g5|970|ppc970|powerpc970)
3345             cpuflags="-mcpu=970"
3346         ;;
3347         power[3-7]*)
3348             cpuflags="-mcpu=$cpu"
3349         ;;
3350         cell)
3351             cpuflags="-mcpu=cell"
3352             enable ldbrx
3353         ;;
3354         e500mc)
3355             cpuflags="-mcpu=e500mc"
3356             disable altivec
3357         ;;
3358         e500v2)
3359             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3360             disable altivec
3361         ;;
3362         e500)
3363             cpuflags="-mcpu=8540 -mhard-float"
3364             disable altivec
3365         ;;
3366     esac
3367
3368 elif enabled sparc; then
3369
3370     case $cpu in
3371         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3372             cpuflags="-mcpu=$cpu"
3373             disable vis
3374         ;;
3375         ultrasparc*|niagara[234])
3376             cpuflags="-mcpu=$cpu"
3377         ;;
3378     esac
3379
3380 elif enabled x86; then
3381
3382     case $cpu in
3383         i[345]86|pentium)
3384             cpuflags="-march=$cpu"
3385             disable mmx
3386         ;;
3387         # targets that do NOT support nopl and conditional mov (cmov)
3388         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3389             cpuflags="-march=$cpu"
3390             disable i686
3391         ;;
3392         # targets that do support nopl and conditional mov (cmov)
3393         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3394             cpuflags="-march=$cpu"
3395             enable i686
3396             enable fast_cmov
3397         ;;
3398         # targets that do support conditional mov but on which it's slow
3399         pentium4|pentium4m|prescott|nocona)
3400             cpuflags="-march=$cpu"
3401             enable i686
3402             disable fast_cmov
3403         ;;
3404     esac
3405
3406 fi
3407
3408 if [ "$cpu" != generic ]; then
3409     add_cflags  $cpuflags
3410     add_asflags $cpuflags
3411 fi
3412
3413 # compiler sanity check
3414 check_exec <<EOF
3415 int main(void){ return 0; }
3416 EOF
3417 if test "$?" != 0; then
3418     echo "$cc is unable to create an executable file."
3419     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3420         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3421         echo "Only do this if you know what cross compiling means."
3422     fi
3423     die "C compiler test failed."
3424 fi
3425
3426 add_cppflags -D_ISOC99_SOURCE
3427 add_cxxflags -D__STDC_CONSTANT_MACROS
3428 check_cflags -std=c99
3429 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3430 #include <stdlib.h>
3431 EOF
3432 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3433 #include <stdlib.h>
3434 EOF
3435
3436 check_host_cflags -std=c99
3437 check_host_cflags -Wall
3438
3439 check_64bit(){
3440     arch32=$1
3441     arch64=$2
3442     expr=$3
3443     check_code cc "" "int test[2*($expr) - 1]" &&
3444         subarch=$arch64 || subarch=$arch32
3445 }
3446
3447 case "$arch" in
3448     aarch64|alpha|ia64)
3449         spic=$shared
3450     ;;
3451     mips)
3452         check_64bit mips mips64 '_MIPS_SIM > 1'
3453         spic=$shared
3454     ;;
3455     parisc)
3456         check_64bit parisc parisc64 'sizeof(void *) > 4'
3457         spic=$shared
3458     ;;
3459     ppc)
3460         check_64bit ppc ppc64 'sizeof(void *) > 4'
3461         spic=$shared
3462     ;;
3463     sparc)
3464         check_64bit sparc sparc64 'sizeof(void *) > 4'
3465         spic=$shared
3466     ;;
3467     x86)
3468         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3469         if test "$subarch" = "x86_64"; then
3470             spic=$shared
3471         fi
3472     ;;
3473     ppc)
3474         check_cc <<EOF && subarch="ppc64"
3475         int test[(int)sizeof(char*) - 7];
3476 EOF
3477     ;;
3478 esac
3479
3480 enable $subarch
3481 enabled spic && enable_weak pic
3482
3483 # OS specific
3484 case $target_os in
3485     aix)
3486         SHFLAGS=-shared
3487         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3488         enabled shared && add_ldflags -Wl,-brtl
3489         ;;
3490     haiku)
3491         prefix_default="/boot/common"
3492         network_extralibs="-lnetwork"
3493         host_libs=
3494         ;;
3495     sunos)
3496         SHFLAGS='-shared -Wl,-h,$$(@F)'
3497         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3498         network_extralibs="-lsocket -lnsl"
3499         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3500         # When using suncc to build, the Solaris linker will mark
3501         # an executable with each instruction set encountered by
3502         # the Solaris assembler.  As our libraries contain their own
3503         # guards for processor-specific code, instead suppress
3504         # generation of the HWCAPS ELF section on Solaris x86 only.
3505         enabled_all suncc x86 &&
3506             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3507             add_ldflags -Wl,-M,mapfile
3508         nm_default='nm -P -g'
3509         ;;
3510     netbsd)
3511         disable symver
3512         oss_indev_extralibs="-lossaudio"
3513         oss_outdev_extralibs="-lossaudio"
3514         enabled gcc || check_ldflags -Wl,-zmuldefs
3515         ;;
3516     openbsd|bitrig)
3517         disable symver
3518         SHFLAGS='-shared'
3519         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3520         SLIB_INSTALL_LINKS=
3521         oss_indev_extralibs="-lossaudio"
3522         oss_outdev_extralibs="-lossaudio"
3523         ;;
3524     dragonfly)
3525         disable symver
3526         ;;
3527     freebsd)
3528         ;;
3529     bsd/os)
3530         add_extralibs -lpoll -lgnugetopt
3531         strip="strip -d"
3532         ;;
3533     darwin)
3534         gas="gas-preprocessor.pl $cc"
3535         enabled ppc && add_asflags -force_cpusubtype_ALL
3536         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3537         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3538         strip="${strip} -x"
3539         add_ldflags -Wl,-dynamic,-search_paths_first
3540         SLIBSUF=".dylib"
3541         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3542         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3543         objformat="macho"
3544         enabled x86_64 && objformat="macho64"
3545         enabled_any pic shared ||
3546             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3547         ;;
3548     mingw32*)
3549         if test $target_os = "mingw32ce"; then
3550             disable network
3551         else
3552             target_os=mingw32
3553         fi
3554         LIBTARGET=i386
3555         if enabled x86_64; then
3556             LIBTARGET="i386:x86-64"
3557         elif enabled arm; then
3558             LIBTARGET=arm-wince
3559         fi
3560         check_ldflags -Wl,--nxcompat
3561         check_ldflags -Wl,--dynamicbase
3562         shlibdir_default="$bindir_default"
3563         SLIBPREF=""
3564         SLIBSUF=".dll"
3565         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3566         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3567         dlltool="${cross_prefix}dlltool"
3568         if check_cmd lib.exe -list; then
3569             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3570             if enabled x86_64; then
3571                 LIBTARGET=x64
3572             fi
3573         elif check_cmd $dlltool --version; then
3574             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3575         fi
3576         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3577         SLIB_INSTALL_LINKS=
3578         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3579         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3580         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3581         objformat="win32"
3582         ranlib=:
3583         enable dos_paths
3584         ;;
3585     win32|win64)
3586         if enabled shared; then
3587             # Link to the import library instead of the normal static library
3588             # for shared libs.
3589             LD_LIB='%.lib'
3590             # Cannot build both shared and static libs with MSVC or icl.
3591             disable static
3592         fi
3593         shlibdir_default="$bindir_default"
3594         SLIBPREF=""
3595         SLIBSUF=".dll"
3596         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3597         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3598         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3599         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3600         SLIB_INSTALL_LINKS=
3601         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3602         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3603         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3604         objformat="win32"
3605         ranlib=:
3606         enable dos_paths
3607         ;;
3608     cygwin*)
3609         target_os=cygwin
3610         shlibdir_default="$bindir_default"
3611         SLIBPREF="cyg"
3612         SLIBSUF=".dll"
3613         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3614         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3615         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3616         SLIB_INSTALL_LINKS=
3617         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3618         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3619         objformat="win32"
3620         enable dos_paths
3621         ;;
3622     *-dos|freedos|opendos)
3623         network_extralibs="-lsocket"
3624         objformat="coff"
3625         enable dos_paths
3626         add_cppflags -U__STRICT_ANSI__
3627         ;;
3628     linux)
3629         enable dv1394
3630         ;;
3631     irix*)
3632         target_os=irix
3633         ranlib="echo ignoring ranlib"
3634         ;;
3635     os/2*)
3636         strip="lxlite -CS"
3637         ln_s="cp -f"
3638         objformat="aout"
3639         add_cppflags -D_GNU_SOURCE
3640         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3641         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3642         LIBSUF="_s.a"
3643         SLIBPREF=""
3644         SLIBSUF=".dll"
3645         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3646         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3647         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3648             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3649             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3650             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3651             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3652             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3653         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3654             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3655         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3656         enable dos_paths
3657         enable_weak os2threads
3658         ;;
3659     gnu/kfreebsd)
3660         add_cppflags -D_BSD_SOURCE
3661         ;;
3662     gnu)
3663         ;;
3664     qnx)
3665         add_cppflags -D_QNX_SOURCE
3666         network_extralibs="-lsocket"
3667         ;;
3668     symbian)
3669         SLIBSUF=".dll"
3670         enable dos_paths
3671         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3672         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3673         add_ldflags -Wl,--target1-abs,--no-undefined \
3674                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3675                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3676         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3677                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3678                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3679         ;;
3680     osf1)
3681         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3682         ;;
3683     minix)
3684         ;;
3685     plan9)
3686         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3687                      -D_REENTRANT_SOURCE        \
3688                      -D_RESEARCH_SOURCE         \
3689                      -DFD_SETSIZE=96            \
3690                      -DHAVE_SOCK_OPTS
3691         add_compat strtod.o strtod=avpriv_strtod
3692         network_extralibs='-lbsd'
3693         exeobjs=compat/plan9/main.o
3694         disable ffserver
3695         cp_f='cp'
3696         ;;
3697     none)
3698         ;;
3699     *)
3700         die "Unknown OS '$target_os'."
3701         ;;
3702 esac
3703
3704 # determine libc flavour
3705
3706 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3707 if check_cpp_condition features.h "defined __UCLIBC__"; then
3708     libc_type=uclibc
3709     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3710 elif check_cpp_condition features.h "defined __GLIBC__"; then
3711     libc_type=glibc
3712     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3713 # MinGW headers can be installed on Cygwin, so check for newlib first.
3714 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3715     libc_type=newlib
3716     add_cppflags -U__STRICT_ANSI__
3717 elif check_header _mingw.h; then
3718     libc_type=mingw
3719     check_cpp_condition _mingw.h \
3720         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3721             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3722         die "ERROR: MinGW runtime version must be >= 3.15."
3723     add_cppflags -U__STRICT_ANSI__
3724     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3725             __MINGW64_VERSION_MAJOR < 3"; then
3726         add_compat msvcrt/snprintf.o
3727         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3728     else
3729         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3730     fi
3731 elif check_func_headers stdlib.h _get_doserrno; then
3732     libc_type=msvcrt
3733     add_compat strtod.o strtod=avpriv_strtod
3734     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3735                                  _snprintf=avpriv_snprintf  \
3736                                  vsnprintf=avpriv_vsnprintf
3737     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3738     # 0x601 by default unless something else is set by the user.
3739     # This can easily lead to us detecting functions only present
3740     # in such new versions and producing binaries requiring windows 7.0.
3741     # Therefore explicitly set the default to XP unless the user has
3742     # set something else on the command line.
3743     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3744 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3745     libc_type=klibc
3746 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3747     libc_type=bionic
3748     add_compat strtod.o strtod=avpriv_strtod
3749 fi
3750
3751 test -n "$libc_type" && enable $libc_type
3752
3753 # hacks for compiler/libc/os combinations
3754
3755 if enabled_all tms470 glibc; then
3756     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3757     add_cppflags -D__USER_LABEL_PREFIX__=
3758     add_cppflags -D__builtin_memset=memset
3759     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3760     add_cflags   -pds=48    # incompatible redefinition of macro
3761 fi
3762
3763 if enabled_all ccc glibc; then
3764     add_ldflags -Wl,-z,now  # calls to libots crash without this
3765 fi
3766
3767 esc(){
3768     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3769 }
3770
3771 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3772
3773 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3774
3775 set_default $PATHS_LIST
3776 set_default nm
3777
3778 # we need to build at least one lib type
3779 if ! enabled_any static shared; then
3780     cat <<EOF
3781 At least one library type must be built.
3782 Specify --enable-static to build the static libraries or --enable-shared to
3783 build the shared libraries as well. To only build the shared libraries specify
3784 --disable-static in addition to --enable-shared.
3785 EOF
3786     exit 1;
3787 fi
3788
3789 # backward compatibility layer for incompatible_libav/fork_abi
3790 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3791 enabled incompatible_libav_abi && enable incompatible_fork_abi
3792
3793 die_license_disabled() {
3794     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3795 }
3796
3797 die_license_disabled_gpl() {
3798     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3799 }
3800
3801 die_license_disabled gpl frei0r
3802 die_license_disabled gpl libcdio
3803 die_license_disabled gpl libutvideo
3804 die_license_disabled gpl libvidstab
3805 die_license_disabled gpl libx264
3806 die_license_disabled gpl libxavs
3807 die_license_disabled gpl libxvid
3808 die_license_disabled gpl libzvbi
3809 die_license_disabled gpl x11grab
3810
3811 die_license_disabled nonfree libaacplus
3812 die_license_disabled nonfree libfaac
3813 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3814 enabled gpl && die_license_disabled_gpl nonfree openssl
3815
3816 die_license_disabled version3 libopencore_amrnb
3817 die_license_disabled version3 libopencore_amrwb
3818 die_license_disabled version3 libvo_aacenc
3819 die_license_disabled version3 libvo_amrwbenc
3820
3821 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3822
3823 disabled optimizations || check_cflags -fomit-frame-pointer
3824
3825 enable_weak_pic() {
3826     disabled pic && return
3827     enable pic
3828     add_cppflags -DPIC
3829     case "$target_os" in
3830     mingw*|cygwin*)
3831         ;;
3832     *)
3833         add_cflags -fPIC
3834         ;;
3835     esac
3836     add_asflags  -fPIC
3837 }
3838
3839 enabled pic && enable_weak_pic
3840
3841 check_cc <<EOF || die "Symbol mangling check failed."
3842 int ff_extern;
3843 EOF
3844 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3845 extern_prefix=${sym%%ff_extern*}
3846
3847 check_cc <<EOF && enable_weak inline_asm
3848 void foo(void) { __asm__ volatile ("" ::); }
3849 EOF
3850
3851 _restrict=
3852 for restrict_keyword in restrict __restrict__ __restrict; do
3853     check_cc <<EOF && _restrict=$restrict_keyword && break
3854 void foo(char * $restrict_keyword p);
3855 EOF
3856 done
3857
3858 check_cc <<EOF && enable pragma_deprecated
3859 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3860 EOF
3861
3862 check_cc <<EOF && enable attribute_packed
3863 struct { int x; } __attribute__((packed)) x;
3864 EOF
3865
3866 check_cc <<EOF && enable attribute_may_alias
3867 union { int x; } __attribute__((may_alias)) x;
3868 EOF
3869
3870 check_cc <<EOF || die "endian test failed"
3871 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3872 EOF
3873 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3874
3875 check_inline_asm inline_asm_labels '"1:\n"'
3876
3877 if enabled alpha; then
3878
3879     check_cflags -mieee
3880
3881 elif enabled arm; then
3882
3883     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3884 float func(float a, float b){ return a+b; }
3885 EOF
3886
3887     enabled thumb && check_cflags -mthumb || check_cflags -marm
3888     nogas=die
3889
3890     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3891         enable vfp_args
3892     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3893         case "${cross_prefix:-$cc}" in
3894             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3895             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3896 __asm__ (".eabi_attribute 28, 1");
3897 int main(void) { return 0; }
3898 EOF
3899         esac
3900         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3901     fi
3902
3903     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3904     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3905     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3906     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3907     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3908     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3909
3910     [ $target_os = linux ] ||
3911         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3912             $ARCH_EXT_LIST_ARM
3913
3914     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3915     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3916
3917     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3918
3919 elif enabled mips; then
3920
3921     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3922     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3923      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3924     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3925      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3926     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3927      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3928     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3929      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3930
3931 elif enabled parisc; then
3932
3933     if enabled gcc; then
3934         case $($cc -dumpversion) in
3935             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3936         esac
3937     fi
3938
3939 elif enabled ppc; then
3940
3941     enable local_aligned_8 local_aligned_16
3942
3943     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3944     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3945     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3946     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3947
3948     # AltiVec flags: The FSF version of GCC differs from the Apple version
3949     if enabled altivec; then
3950         if ! enabled_any pic ppc64; then
3951             nogas=warn
3952         fi
3953         check_cflags -maltivec -mabi=altivec &&
3954         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3955         check_cflags -faltivec
3956
3957         # check if our compiler supports Motorola AltiVec C API
3958         check_cc <<EOF || disable altivec
3959 $inc_altivec_h
3960 int main(void) {
3961     vector signed int v1 = (vector signed int) { 0 };
3962     vector signed int v2 = (vector signed int) { 1 };
3963     v1 = vec_add(v1, v2);
3964     return 0;
3965 }
3966 EOF
3967
3968         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3969     fi
3970
3971 elif enabled sparc; then
3972
3973     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3974
3975 elif enabled x86; then
3976
3977     check_builtin rdtsc    intrin.h   "__rdtsc()"
3978     check_builtin mm_empty mmintrin.h "_mm_empty()"
3979
3980     enable local_aligned_8 local_aligned_16
3981
3982     # check whether EBP is available on x86
3983     # As 'i' is stored on the stack, this program will crash
3984     # if the base pointer is used to access it because the
3985     # base pointer is cleared in the inline assembly code.
3986     check_exec_crash <<EOF && enable ebp_available
3987 volatile int i=0;
3988 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3989 return i;
3990 EOF
3991
3992     # check whether EBX is available on x86
3993     check_inline_asm ebx_available '""::"b"(0)' &&
3994         check_inline_asm ebx_available '"":::"%ebx"'
3995
3996     # check whether xmm clobbers are supported
3997     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3998
3999     # check whether binutils is new enough to compile SSSE3/MMXEXT
4000     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4001     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4002
4003     if ! disabled_any asm mmx yasm; then
4004         if check_cmd $yasmexe --version; then
4005             enabled x86_64 && yasm_extra="-m amd64"
4006             yasm_debug="-g dwarf2"
4007         elif check_cmd nasm -v; then
4008             yasmexe=nasm
4009             yasm_debug="-g -F dwarf"
4010             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4011         fi
4012
4013         YASMFLAGS="-f $objformat $yasm_extra"
4014         enabled pic               && append YASMFLAGS "-DPIC"
4015         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4016         case "$objformat" in
4017             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4018         esac
4019
4020         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
4021             die "yasm not found, use --disable-yasm for a crippled build"
4022         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4023         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4024         check_yasm "CPU amdnop" && enable cpunop
4025     fi
4026
4027     case "$cpu" in
4028         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4029             disable fast_clz
4030         ;;
4031     esac
4032
4033 fi
4034
4035 if enabled asm; then
4036     as=${gas:=$as}
4037     check_as <<EOF && enable gnu_as || \
4038         $nogas "GNU assembler not found, install gas-preprocessor"
4039 .macro m n
4040 \n: .int 0
4041 .endm
4042 m x
4043 EOF
4044 fi
4045
4046 check_ldflags -Wl,--as-needed
4047
4048 if check_func dlopen; then
4049     ldl=
4050 elif check_func dlopen -ldl; then
4051     ldl=-ldl
4052 fi
4053
4054 if ! disabled network; then
4055     check_type "sys/types.h sys/socket.h" socklen_t
4056     check_type netdb.h "struct addrinfo"
4057     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4058     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4059     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4060     check_type netinet/in.h "struct sockaddr_in6"
4061     check_type poll.h "struct pollfd"
4062     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4063     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4064     check_type netinet/sctp.h "struct sctp_event_subscribe"
4065     check_func getaddrinfo $network_extralibs
4066     check_func getservbyport $network_extralibs
4067     # Prefer arpa/inet.h over winsock2
4068     if check_header arpa/inet.h ; then
4069         check_func closesocket
4070     elif check_header winsock2.h ; then
4071         check_func_headers winsock2.h closesocket -lws2 &&
4072             network_extralibs="-lws2" ||
4073         { check_func_headers winsock2.h closesocket -lws2_32 &&
4074             network_extralibs="-lws2_32"; }
4075         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4076         check_type ws2tcpip.h socklen_t
4077         check_type ws2tcpip.h "struct addrinfo"
4078         check_type ws2tcpip.h "struct group_source_req"
4079         check_type ws2tcpip.h "struct ip_mreq_source"
4080         check_type ws2tcpip.h "struct ipv6_mreq"
4081         check_type winsock2.h "struct pollfd"
4082         check_type ws2tcpip.h "struct sockaddr_in6"
4083         check_type ws2tcpip.h "struct sockaddr_storage"
4084         check_struct winsock2.h "struct sockaddr" sa_len
4085     else
4086         disable network
4087     fi
4088 fi
4089
4090 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4091 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4092
4093 check_func  access
4094 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4095 check_func  fcntl
4096 check_func  fork
4097 check_func_headers stdlib.h getenv
4098 check_func  gethrtime
4099 check_func  getopt
4100 check_func  getrusage
4101 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4102 check_func  gettimeofday
4103 check_func  inet_aton $network_extralibs
4104 check_func  isatty
4105 check_func  localtime_r
4106 check_func  ${malloc_prefix}memalign            && enable memalign
4107 check_func  mkstemp
4108 check_func  mmap
4109 check_func  mprotect
4110 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4111 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4112 check_func  setrlimit
4113 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4114 check_func  strerror_r
4115 check_func  sched_getaffinity
4116 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4117 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4118 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4119 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4120 check_builtin sarestart signal.h "SA_RESTART"
4121 check_func  sysconf
4122 check_func  sysctl
4123 check_func  usleep
4124 check_func_headers conio.h kbhit
4125 check_func_headers windows.h PeekNamedPipe
4126 check_func_headers io.h setmode
4127 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4128 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4129 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4130 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4131 check_func_headers windows.h GetProcessAffinityMask
4132 check_func_headers windows.h GetProcessTimes
4133 check_func_headers windows.h GetSystemTimeAsFileTime
4134 check_func_headers windows.h MapViewOfFile
4135 check_func_headers windows.h SetConsoleTextAttribute
4136 check_func_headers windows.h Sleep
4137 check_func_headers windows.h VirtualAlloc
4138 check_func_headers glob.h glob
4139 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4140
4141 check_header cl/cl.h
4142 check_header direct.h
4143 check_header dlfcn.h
4144 check_header dxva.h
4145 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4146 check_header io.h
4147 check_header libcrystalhd/libcrystalhd_if.h
4148 check_header malloc.h
4149 check_header poll.h
4150 check_header sys/mman.h
4151 check_header sys/param.h
4152 check_header sys/resource.h
4153 check_header sys/select.h
4154 check_header sys/time.h
4155 check_header sys/un.h
4156 check_header termios.h
4157 check_header unistd.h
4158 check_header vdpau/vdpau.h
4159 check_header vdpau/vdpau_x11.h
4160 check_header VideoDecodeAcceleration/VDADecoder.h
4161 check_header windows.h
4162 check_header X11/extensions/XvMClib.h
4163 check_header asm/types.h
4164
4165 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4166 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4167
4168 if ! disabled w32threads && ! enabled pthreads; then
4169     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
4170 fi
4171
4172 # check for some common methods of building with pthread support
4173 # do this before the optional library checks as some of them require pthreads
4174 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4175     enable pthreads
4176     if check_func pthread_create; then
4177         :
4178     elif check_func pthread_create -pthread; then
4179         add_cflags -pthread
4180         add_extralibs -pthread
4181     elif check_func pthread_create -pthreads; then
4182         add_cflags -pthreads
4183         add_extralibs -pthreads
4184     elif check_func pthread_create -lpthreadGC2; then
4185         add_extralibs -lpthreadGC2
4186     elif ! check_lib pthread.h pthread_create -lpthread; then
4187         disable pthreads
4188     fi
4189 fi
4190
4191 for thread in $THREADS_LIST; do
4192     if enabled $thread; then
4193         test -n "$thread_type" &&
4194             die "ERROR: Only one thread type must be selected." ||
4195             thread_type="$thread"
4196     fi
4197 done
4198
4199 if enabled pthreads; then
4200   check_func pthread_cancel
4201 fi
4202
4203 enabled sync_val_compare_and_swap && enable atomics_gcc
4204 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
4205 enabled MemoryBarrier && enable atomics_win32
4206
4207 check_lib math.h sin -lm && LIBM="-lm"
4208 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4209
4210 atan2f_args=2
4211 ldexpf_args=2
4212 powf_args=2
4213
4214 for func in $MATH_FUNCS; do
4215     eval check_mathfunc $func \${${func}_args:-1}
4216 done
4217
4218 # these are off by default, so fail if requested and not available
4219 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4220                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4221                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4222 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4223 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4224 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4225 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4226 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4227 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4228 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4229 enabled libbluray         && require libbluray libbluray/bluray.h bd_open -lbluray
4230 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4231                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4232                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4233 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4234 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4235 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4236 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"
4237 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4238 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
4239 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4240 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4241                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4242                                done || die "ERROR: libgsm not found"; }
4243 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4244 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4245 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4246 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4247 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4248 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4249 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4250 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4251                                check_lib openjpeg.h opj_version -lopenjpeg ||
4252                                die "ERROR: libopenjpeg not found"; }
4253 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4254 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4255 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4256 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4257 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4258 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4259 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4260 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4261 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4262 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4263     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4264     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4265 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4266 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4267                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4268                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4269 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4270 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4271 enabled libvidstab        && require_pkg_config vidstab vid.stab/libvidstab.h vsMotionDetectInit
4272 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4273 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4274 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4275 enabled libvpx            && {
4276     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4277                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4278     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 ||
4279                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4280     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4281     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4282 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4283 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4284                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4285                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4286 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4287 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4288 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4289 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4290 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4291                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4292                                die "ERROR: openal not found"; } &&
4293                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4294                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4295 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4296                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4297                                die "ERROR: opencl not found"; } &&
4298                              { ! enabled_any w32threads os2threads ||
4299                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4300                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4301                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4302                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4303 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4304                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4305                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4306                                die "ERROR: openssl not found"; }
4307
4308 if enabled gnutls; then
4309     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4310     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4311 fi
4312
4313 # libdc1394 check
4314 if enabled libdc1394; then
4315     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4316         enable libdc1394_2; } ||
4317     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4318         enable libdc1394_1; } ||
4319     die "ERROR: No version of libdc1394 found "
4320 fi
4321
4322 SDL_CONFIG="${cross_prefix}sdl-config"
4323 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4324     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4325     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4326     enable sdl
4327 else
4328   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4329     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4330     sdl_libs=$("${SDL_CONFIG}" --libs)
4331     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4332     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4333     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4334     enable sdl
4335   fi
4336 fi
4337 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4338
4339 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4340 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4341 perl --version > /dev/null 2>&1 && enable perl || disable perl
4342 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
4343 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4344
4345 check_header linux/fb.h
4346 check_header linux/videodev.h
4347 check_header linux/videodev2.h
4348 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4349
4350 check_header sys/videoio.h
4351
4352 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4353 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4354 # w32api 3.12 had it defined wrong
4355 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4356
4357 check_type "dshow.h" IBaseFilter
4358
4359 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4360 { check_header dev/bktr/ioctl_meteor.h &&
4361   check_header dev/bktr/ioctl_bt848.h; } ||
4362 { check_header machine/ioctl_meteor.h &&
4363   check_header machine/ioctl_bt848.h; } ||
4364 { check_header dev/video/meteor/ioctl_meteor.h &&
4365   check_header dev/video/bktr/ioctl_bt848.h; } ||
4366 check_header dev/ic/bt8xx.h
4367
4368 check_header sndio.h
4369 if check_struct sys/soundcard.h audio_buf_info bytes; then
4370     enable_safe sys/soundcard.h
4371 else
4372     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4373     #include <sys/soundcard.h>
4374     audio_buf_info abc;
4375 EOF
4376 fi
4377 check_header soundcard.h
4378
4379 enabled_any alsa_indev alsa_outdev &&
4380     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4381
4382 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4383     check_func jack_port_get_latency_range -ljack
4384
4385 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4386
4387 if enabled libcdio; then
4388     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4389     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4390     die "ERROR: libcdio-paranoia not found"
4391 fi
4392
4393 enabled x11grab                                           &&
4394 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
4395 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4396 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4397
4398 enabled vaapi &&
4399     check_lib va/va.h vaInitialize -lva ||
4400     disable vaapi
4401
4402 enabled vdpau &&
4403     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4404     disable vdpau
4405
4406 # Funny iconv installations are not unusual, so check it after all flags have been set
4407 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4408
4409 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4410
4411 # add some useful compiler flags if supported
4412 check_cflags -Wdeclaration-after-statement
4413 check_cflags -Wall
4414 check_cflags -Wno-parentheses
4415 check_cflags -Wno-switch
4416 check_cflags -Wno-format-zero-length
4417 check_cflags -Wdisabled-optimization
4418 check_cflags -Wpointer-arith
4419 check_cflags -Wredundant-decls
4420 check_cflags -Wno-pointer-sign
4421 check_cflags -Wwrite-strings
4422 check_cflags -Wtype-limits
4423 check_cflags -Wundef
4424 check_cflags -Wmissing-prototypes
4425 check_cflags -Wno-pointer-to-int-cast
4426 check_cflags -Wstrict-prototypes
4427 enabled extra_warnings && check_cflags -Winline
4428
4429 # add some linker flags
4430 check_ldflags -Wl,--warn-common
4431 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4432 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4433
4434 enabled xmm_clobber_test &&
4435     check_ldflags -Wl,--wrap,avcodec_open2              \
4436                   -Wl,--wrap,avcodec_decode_audio4      \
4437                   -Wl,--wrap,avcodec_decode_video2      \
4438                   -Wl,--wrap,avcodec_decode_subtitle2   \
4439                   -Wl,--wrap,avcodec_encode_audio2      \
4440                   -Wl,--wrap,avcodec_encode_video       \
4441                   -Wl,--wrap,avcodec_encode_video2      \
4442                   -Wl,--wrap,avcodec_encode_subtitle    \
4443                   -Wl,--wrap,sws_scale ||
4444     disable xmm_clobber_test
4445
4446 echo "X{};" > $TMPV
4447 if test_ldflags -Wl,--version-script,$TMPV; then
4448     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4449     check_cc <<EOF && enable symver_asm_label
4450 void ff_foo(void) __asm__ ("av_foo@VERSION");
4451 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4452 EOF
4453     check_cc <<EOF && enable symver_gnu_asm
4454 __asm__(".symver ff_foo,av_foo@VERSION");
4455 void ff_foo(void) {}
4456 EOF
4457 fi
4458
4459 if [ -z "$optflags" ]; then
4460     if enabled small; then
4461         optflags=$cflags_size
4462     elif enabled optimizations; then
4463         optflags=$cflags_speed
4464     else
4465         optflags=$cflags_noopt
4466     fi
4467 fi
4468
4469 check_optflags(){
4470     check_cflags "$@"
4471     enabled lto && check_ldflags "$@"
4472 }
4473
4474
4475 if enabled lto; then
4476     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4477     check_cflags  -flto
4478     check_ldflags -flto $cpuflags
4479 fi
4480
4481 check_optflags $optflags
4482 check_optflags -fno-math-errno
4483 check_optflags -fno-signed-zeros
4484
4485 enabled ftrapv && check_cflags -ftrapv
4486
4487 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4488 int x;
4489 EOF
4490
4491
4492 if enabled icc; then
4493     # Just warnings, no remarks
4494     check_cflags -w1
4495     # -wd: Disable following warnings
4496     # 144, 167, 556: -Wno-pointer-sign
4497     # 188: enumerated type mixed with another type
4498     # 1292: attribute "foo" ignored
4499     # 1419: external declaration in primary source file
4500     # 10006: ignoring unknown option -fno-signed-zeros
4501     # 10148: ignoring unknown option -Wno-parentheses
4502     # 10156: ignoring option '-W'; no argument required
4503     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4504     # 11030: Warning unknown option --as-needed
4505     # 10156: ignoring option '-export'; no argument required
4506     check_ldflags -wd10156,11030
4507     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4508     enable ebp_available
4509     if enabled x86_32; then
4510         icc_version=$($cc -dumpversion)
4511         test ${icc_version%%.*} -ge 11 &&
4512             check_cflags -falign-stack=maintain-16-byte ||
4513             disable aligned_stack
4514     fi
4515 elif enabled ccc; then
4516     # disable some annoying warnings
4517     add_cflags -msg_disable bitnotint
4518     add_cflags -msg_disable mixfuncvoid
4519     add_cflags -msg_disable nonstandcast
4520     add_cflags -msg_disable unsupieee
4521 elif enabled gcc; then
4522     check_optflags -fno-tree-vectorize
4523     check_cflags -Werror=implicit-function-declaration
4524     check_cflags -Werror=missing-prototypes
4525     check_cflags -Werror=return-type
4526     check_cflags -Werror=vla
4527 elif enabled llvm_gcc; then
4528     check_cflags -mllvm -stack-alignment=16
4529 elif enabled clang; then
4530     check_cflags -mllvm -stack-alignment=16
4531     check_cflags -Qunused-arguments
4532     check_cflags -Werror=implicit-function-declaration
4533     check_cflags -Werror=missing-prototypes
4534     check_cflags -Werror=return-type
4535 elif enabled cparser; then
4536     add_cflags -Wno-missing-variable-declarations
4537     add_cflags -Wno-empty-statement
4538 elif enabled armcc; then
4539     # 2523: use of inline assembler is deprecated
4540     add_cflags -W${armcc_opt},--diag_suppress=2523
4541     add_cflags -W${armcc_opt},--diag_suppress=1207
4542     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4543     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4544     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4545     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4546 elif enabled tms470; then
4547     add_cflags -pds=824 -pds=837
4548 elif enabled pathscale; then
4549     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4550 elif enabled_any msvc icl; then
4551     enabled x86_32 && disable aligned_stack
4552     enabled_all x86_32 debug && add_cflags -Oy-
4553     enabled debug && add_ldflags -debug
4554     enable pragma_deprecated
4555     if enabled icl; then
4556         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4557         # (correctly) on icl 13.x.
4558         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4559             add_cflags -Qansi-alias
4560         # icl will pass the inline asm tests but inline asm is currently
4561         # not supported (build will fail)
4562         disable inline_asm
4563     fi
4564 fi
4565
4566 case $target_os in
4567     osf1)
4568         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4569     ;;
4570     plan9)
4571         add_cppflags -Dmain=plan9_main
4572     ;;
4573 esac
4574
4575 enable frame_thread_encoder
4576 enabled_any $THREADS_LIST      && enable threads
4577 enabled_any $ATOMICS_LIST      && enable atomics_native
4578
4579 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4580
4581 check_deps $CONFIG_LIST       \
4582            $CONFIG_EXTRA      \
4583            $HAVE_LIST         \
4584            $ALL_COMPONENTS    \
4585
4586
4587 if test $target_os = "haiku"; then
4588     disable memalign
4589     disable posix_memalign
4590 fi
4591
4592 ! enabled_any memalign posix_memalign aligned_malloc &&
4593     enabled_any $need_memalign && enable memalign_hack
4594
4595 # add_dep lib dep
4596 # -> enable ${lib}_deps_${dep}
4597 # -> add $dep to ${lib}_deps only once
4598 add_dep() {
4599     lib=$1
4600     dep=$2
4601     enabled "${lib}_deps_${dep}" && return 0
4602     enable  "${lib}_deps_${dep}"
4603     prepend "${lib}_deps" $dep
4604 }
4605
4606 # merge deps lib components
4607 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4608 merge_deps() {
4609     lib=$1
4610     shift
4611     for comp in $*; do
4612         enabled $comp || continue
4613         eval "dep=\"\$${comp}_deps\""
4614         for d in $dep; do
4615             add_dep $lib $d
4616         done
4617     done
4618 }
4619
4620 merge_deps libavfilter $FILTER_LIST
4621
4622 echo "install prefix            $prefix"
4623 echo "source path               $source_path"
4624 echo "C compiler                $cc"
4625 echo "ARCH                      $arch ($cpu)"
4626 if test "$build_suffix" != ""; then
4627     echo "build suffix              $build_suffix"
4628 fi
4629 if test "$progs_suffix" != ""; then
4630     echo "progs suffix              $progs_suffix"
4631 fi
4632 if test "$extra_version" != ""; then
4633     echo "version string suffix     $extra_version"
4634 fi
4635 echo "big-endian                ${bigendian-no}"
4636 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4637 if enabled x86; then
4638     echo "${yasmexe}                      ${yasm-no}"
4639     echo "MMX enabled               ${mmx-no}"
4640     echo "MMXEXT enabled            ${mmxext-no}"
4641     echo "3DNow! enabled            ${amd3dnow-no}"
4642     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4643     echo "SSE enabled               ${sse-no}"
4644     echo "SSSE3 enabled             ${ssse3-no}"
4645     echo "AVX enabled               ${avx-no}"
4646     echo "FMA4 enabled              ${fma4-no}"
4647     echo "i686 features enabled     ${i686-no}"
4648     echo "CMOV is fast              ${fast_cmov-no}"
4649     echo "EBX available             ${ebx_available-no}"
4650     echo "EBP available             ${ebp_available-no}"
4651 fi
4652 if enabled arm; then
4653     echo "ARMv5TE enabled           ${armv5te-no}"
4654     echo "ARMv6 enabled             ${armv6-no}"
4655     echo "ARMv6T2 enabled           ${armv6t2-no}"
4656     echo "VFP enabled               ${vfp-no}"
4657     echo "NEON enabled              ${neon-no}"
4658     echo "THUMB enabled             ${thumb-no}"
4659 fi
4660 if enabled mips; then
4661     echo "MIPS FPU enabled          ${mipsfpu-no}"
4662     echo "MIPS32R2 enabled          ${mips32r2-no}"
4663     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4664     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4665 fi
4666 if enabled ppc; then
4667     echo "AltiVec enabled           ${altivec-no}"
4668     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4669     echo "dcbzl available           ${dcbzl-no}"
4670 fi
4671 if enabled sparc; then
4672     echo "VIS enabled               ${vis-no}"
4673 fi
4674 echo "debug symbols             ${debug-no}"
4675 echo "strip symbols             ${stripping-no}"
4676 echo "optimize for size         ${small-no}"
4677 echo "optimizations             ${optimizations-no}"
4678 echo "static                    ${static-no}"
4679 echo "shared                    ${shared-no}"
4680 echo "postprocessing support    ${postproc-no}"
4681 echo "new filter support        ${avfilter-no}"
4682 echo "network support           ${network-no}"
4683 echo "threading support         ${thread_type-no}"
4684 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4685 echo "SDL support               ${sdl-no}"
4686 echo "opencl enabled            ${opencl-no}"
4687 echo "libzvbi enabled           ${libzvbi-no}"
4688 echo "texi2html enabled         ${texi2html-no}"
4689 echo "perl enabled              ${perl-no}"
4690 echo "pod2man enabled           ${pod2man-no}"
4691 echo "makeinfo enabled          ${makeinfo-no}"
4692 test -n "$random_seed" &&
4693     echo "random seed               ${random_seed}"
4694 echo
4695
4696 echo "External libraries:"
4697 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4698 echo
4699
4700 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4701     echo "Enabled ${type}s:"
4702     eval list=\$$(toupper $type)_LIST
4703     print_enabled '_*' $list | print_3_columns
4704     echo
4705 done
4706
4707 license="LGPL version 2.1 or later"
4708 if enabled nonfree; then
4709     license="nonfree and unredistributable"
4710 elif enabled gplv3; then
4711     license="GPL version 3 or later"
4712 elif enabled lgplv3; then
4713     license="LGPL version 3 or later"
4714 elif enabled gpl; then
4715     license="GPL version 2 or later"
4716 fi
4717
4718 echo "License: $license"
4719
4720 echo "Creating config.mak, config.h, and doc/config.texi..."
4721
4722 test -e Makefile || $ln_s "$source_path/Makefile" .
4723
4724 enabled stripping || strip="echo skipping strip"
4725
4726 config_files="$TMPH config.mak doc/config.texi"
4727
4728 cat > config.mak <<EOF
4729 # Automatically generated by configure - do not modify!
4730 ifndef FFMPEG_CONFIG_MAK
4731 FFMPEG_CONFIG_MAK=1
4732 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4733 prefix=$prefix
4734 LIBDIR=\$(DESTDIR)$libdir
4735 SHLIBDIR=\$(DESTDIR)$shlibdir
4736 INCDIR=\$(DESTDIR)$incdir
4737 BINDIR=\$(DESTDIR)$bindir
4738 DATADIR=\$(DESTDIR)$datadir
4739 DOCDIR=\$(DESTDIR)$docdir
4740 MANDIR=\$(DESTDIR)$mandir
4741 SRC_PATH=$source_path
4742 ifndef MAIN_MAKEFILE
4743 SRC_PATH:=\$(SRC_PATH:.%=..%)
4744 endif
4745 CC_IDENT=$cc_ident
4746 ARCH=$arch
4747 CC=$cc
4748 CXX=$cxx
4749 AS=$as
4750 LD=$ld
4751 DEPCC=$dep_cc
4752 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4753 DEPAS=$as
4754 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4755 YASM=$yasmexe
4756 DEPYASM=$yasmexe
4757 AR=$ar
4758 ARFLAGS=$arflags
4759 AR_O=$ar_o
4760 RANLIB=$ranlib
4761 CP=cp -p
4762 LN_S=$ln_s
4763 STRIP=$strip
4764 CPPFLAGS=$CPPFLAGS
4765 CFLAGS=$CFLAGS
4766 CXXFLAGS=$CXXFLAGS
4767 ASFLAGS=$ASFLAGS
4768 AS_C=$AS_C
4769 AS_O=$AS_O
4770 CC_C=$CC_C
4771 CC_E=$CC_E
4772 CC_O=$CC_O
4773 CXX_C=$CXX_C
4774 CXX_O=$CXX_O
4775 LD_O=$LD_O
4776 LD_LIB=$LD_LIB
4777 LD_PATH=$LD_PATH
4778 DLLTOOL=$dlltool
4779 LDFLAGS=$LDFLAGS
4780 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4781 YASMFLAGS=$YASMFLAGS
4782 BUILDSUF=$build_suffix
4783 PROGSSUF=$progs_suffix
4784 FULLNAME=$FULLNAME
4785 LIBPREF=$LIBPREF
4786 LIBSUF=$LIBSUF
4787 LIBNAME=$LIBNAME
4788 SLIBPREF=$SLIBPREF
4789 SLIBSUF=$SLIBSUF
4790 EXESUF=$EXESUF
4791 EXTRA_VERSION=$extra_version
4792 CCDEP=$CCDEP
4793 CXXDEP=$CXXDEP
4794 CCDEP_FLAGS=$CCDEP_FLAGS
4795 ASDEP=$ASDEP
4796 ASDEP_FLAGS=$ASDEP_FLAGS
4797 CC_DEPFLAGS=$CC_DEPFLAGS
4798 AS_DEPFLAGS=$AS_DEPFLAGS
4799 HOSTCC=$host_cc
4800 HOSTLD=$host_ld
4801 HOSTCFLAGS=$host_cflags
4802 HOSTCPPFLAGS=$host_cppflags
4803 HOSTEXESUF=$HOSTEXESUF
4804 HOSTLDFLAGS=$host_ldflags
4805 HOSTLIBS=$host_libs
4806 DEPHOSTCC=$host_cc
4807 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4808 HOSTCCDEP=$HOSTCCDEP
4809 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4810 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4811 HOSTCC_C=$HOSTCC_C
4812 HOSTCC_O=$HOSTCC_O
4813 HOSTLD_O=$HOSTLD_O
4814 TARGET_EXEC=$target_exec $target_exec_args
4815 TARGET_PATH=$target_path
4816 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4817 LIBS-ffplay=$sdl_libs
4818 CFLAGS-ffplay=$sdl_cflags
4819 ZLIB=$($ldflags_filter -lz)
4820 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4821 EXTRALIBS=$extralibs
4822 COMPAT_OBJS=$compat_objs
4823 EXEOBJS=$exeobjs
4824 INSTALL=$install
4825 LIBTARGET=${LIBTARGET}
4826 SLIBNAME=${SLIBNAME}
4827 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4828 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4829 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4830 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4831 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4832 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4833 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4834 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4835 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4836 NOREDZONE_FLAGS=$noredzone_flags
4837 EOF
4838
4839 get_version(){
4840     lcname=lib${1}
4841     name=$(toupper $lcname)
4842     file=$source_path/$lcname/version.h
4843     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4844     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4845     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4846     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4847     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4848 }
4849
4850 map 'get_version $v' $LIBRARY_LIST
4851
4852 cat > $TMPH <<EOF
4853 /* Automatically generated by configure - do not modify! */
4854 #ifndef FFMPEG_CONFIG_H
4855 #define FFMPEG_CONFIG_H
4856 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4857 #define FFMPEG_LICENSE "$(c_escape $license)"
4858 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4859 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4860 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4861 #define av_restrict $_restrict
4862 #define EXTERN_PREFIX "${extern_prefix}"
4863 #define EXTERN_ASM ${extern_prefix}
4864 #define SLIBSUF "$SLIBSUF"
4865 #define HAVE_MMX2 HAVE_MMXEXT
4866 EOF
4867
4868 test -n "$assert_level" &&
4869     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4870
4871 test -n "$malloc_prefix" &&
4872     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4873
4874 if enabled yasm; then
4875     append config_files $TMPASM
4876     printf '' >$TMPASM
4877 fi
4878
4879 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4880
4881
4882 mkdir -p doc
4883 echo "@c auto-generated by configure" > doc/config.texi
4884
4885 print_config ARCH_   "$config_files" $ARCH_LIST
4886 print_config HAVE_   "$config_files" $HAVE_LIST
4887 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4888                                      $CONFIG_EXTRA      \
4889                                      $ALL_COMPONENTS    \
4890
4891 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4892 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4893
4894 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4895 cp_if_changed $TMPH config.h
4896 touch .config
4897
4898 enabled yasm && cp_if_changed $TMPASM config.asm
4899
4900 cat > $TMPH <<EOF
4901 /* Generated by ffconf */
4902 #ifndef AVUTIL_AVCONFIG_H
4903 #define AVUTIL_AVCONFIG_H
4904 EOF
4905
4906 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4907
4908 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4909
4910 cp_if_changed $TMPH libavutil/avconfig.h
4911
4912 if test -n "$WARNINGS"; then
4913     printf "\n$WARNINGS"
4914     enabled fatal_warnings && exit 1
4915 fi
4916
4917 # build pkg-config files
4918
4919 pkgconfig_generate(){
4920     name=$1
4921     shortname=${name#lib}${build_suffix}
4922     comment=$2
4923     version=$3
4924     libs=$4
4925     requires=$5
4926     enabled ${name#lib} || return 0
4927     mkdir -p $name
4928     cat <<EOF > $name/$name${build_suffix}.pc
4929 prefix=$prefix
4930 exec_prefix=\${prefix}
4931 libdir=$libdir
4932 includedir=$incdir
4933
4934 Name: $name
4935 Description: $comment
4936 Version: $version
4937 Requires: $(enabled shared || echo $requires)
4938 Requires.private: $(enabled shared && echo $requires)
4939 Conflicts:
4940 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4941 Libs.private: $(enabled shared && echo $libs)
4942 Cflags: -I\${includedir}
4943 EOF
4944
4945 mkdir -p doc/examples/pc-uninstalled
4946 includedir=${source_path}
4947 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
4948     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
4949 prefix=
4950 exec_prefix=
4951 libdir=\${pcfiledir}/../../../$name
4952 includedir=${includedir}
4953
4954 Name: $name
4955 Description: $comment
4956 Version: $version
4957 Requires: $requires
4958 Conflicts:
4959 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4960 Cflags: -I\${includedir}
4961 EOF
4962 }
4963
4964 lavfi_libs="libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4965 enabled libavfilter_deps_avcodec    && prepend lavfi_libs "libavcodec${build_suffix} = $LIBAVCODEC_VERSION,"
4966 enabled libavfilter_deps_avformat   && prepend lavfi_libs "libavformat${build_suffix} = $LIBAVFORMAT_VERSION,"
4967 enabled libavfilter_deps_avresample && prepend lavfi_libs "libavresample${build_suffix} = $LIBAVRESAMPLE_VERSION,"
4968 enabled libavfilter_deps_swscale    && prepend lavfi_libs "libswscale${build_suffix} = $LIBSWSCALE_VERSION,"
4969 enabled libavfilter_deps_swresample && prepend lavfi_libs "libswresample${build_suffix} = $LIBSWRESAMPLE_VERSION,"
4970 enabled libavfilter_deps_postproc   && prepend lavfi_libs "libpostproc${build_suffix} = $LIBPOSTPROC_VERSION,"
4971 lavfi_libs=${lavfi_libs%, }
4972
4973 lavd_libs="libavformat${build_suffix} = $LIBAVFORMAT_VERSION"
4974 enabled lavfi_indev && prepend lavd_libs "libavfilter${build_suffix} = $LIBAVFILTER_VERSION,"
4975
4976 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
4977 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4978 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec${build_suffix} = $LIBAVCODEC_VERSION"
4979 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs" "$lavd_libs"
4980 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4981 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""           "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4982 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4983 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4984 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4985
4986 fix_ffmpeg_remote(){
4987     git_remote_from=$1
4988     git_remote_to=$2
4989     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
4990     if [ "$fixme_remote" != "" ]; then
4991         echolog "
4992 Outdated domain in git config, the official domain for ffmpeg git is since
4993 November 2011, source.ffmpeg.org, both the old and the new point to the same
4994 repository and server. To update it enter the following commands:
4995 "
4996         for remote in $fixme_remote; do
4997             echolog "git remote set-url $remote $git_remote_to"
4998         done
4999     fi
5000 }
5001
5002 if test -f "$source_path/.git/config"; then
5003     remote_from=git.videolan.org
5004     remote_to=source.ffmpeg.org
5005     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
5006     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
5007 fi