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   --libdir=DIR             install libs in DIR [PREFIX/lib]
  86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  87   --incdir=DIR             install includes in DIR [PREFIX/include]
  88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  89
  90 Licensing options:
  91   --enable-gpl             allow use of GPL code, the resulting libs
  92                            and binaries will be under GPL [no]
  93   --enable-version3        upgrade (L)GPL to version 3 [no]
  94   --enable-nonfree         allow use of nonfree code, the resulting libs
  95                            and binaries will be unredistributable [no]
  96
  97 Configuration options:
  98   --disable-static         do not build static libraries [no]
  99   --enable-shared          build shared libraries [no]
 100   --enable-small           optimize for size instead of speed
 101   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 102   --enable-gray            enable full grayscale support (slower color)
 103   --disable-swscale-alpha  disable alpha channel support in swscale
 104   --disable-all            disable building components, libraries and programs
 105   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 106   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
 107
 108 Program options:
 109   --disable-programs       do not build command line programs
 110   --disable-ffmpeg         disable ffmpeg build
 111   --disable-ffplay         disable ffplay build
 112   --disable-ffprobe        disable ffprobe build
 113   --disable-ffserver       disable ffserver build
 114
 115 Documentation options:
 116   --disable-doc            do not build documentation
 117   --disable-htmlpages      do not build HTML documentation pages
 118   --disable-manpages       do not build man documentation pages
 119   --disable-podpages       do not build POD documentation pages
 120   --disable-txtpages       do not build text documentation pages
 121
 122 Component options:
 123   --disable-avdevice       disable libavdevice build
 124   --disable-avcodec        disable libavcodec build
 125   --disable-avformat       disable libavformat build
 126   --disable-avutil         disable libavutil build
 127   --disable-swresample     disable libswresample build
 128   --disable-swscale        disable libswscale build
 129   --disable-postproc       disable libpostproc build
 130   --disable-avfilter       disable libavfilter build
 131   --enable-avresample      enable libavresample build [no]
 132   --disable-pthreads       disable pthreads [auto]
 133   --disable-w32threads     disable Win32 threads [auto]
 134   --disable-os2threads     disable OS/2 threads [auto]
 135   --disable-network        disable network support [no]
 136   --disable-dct            disable DCT code
 137   --disable-dwt            disable DWT code
 138   --disable-error-resilience disable error resilience code
 139   --disable-lsp            disable LSP code
 140   --disable-lzo            disable LZO decoder code
 141   --disable-mdct           disable MDCT code
 142   --disable-rdft           disable RDFT code
 143   --disable-fft            disable FFT code
 144
 145 Hardware accelerators:
 146   --disable-dxva2          disable DXVA2 code [autodetect]
 147   --disable-vaapi          disable VAAPI code [autodetect]
 148   --enable-vda             enable VDA code
 149   --disable-vdpau          disable VDPAU code [autodetect]
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189   --enable-avisynth        enable reading of AviSynth script files [no]
 190   --disable-bzlib          disable bzlib [autodetect]
 191   --enable-fontconfig      enable fontconfig
 192   --enable-frei0r          enable frei0r video filtering
 193   --enable-gnutls          enable gnutls [no]
 194   --disable-iconv          disable iconv [autodetect]
 195   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 196   --enable-libass          enable libass subtitles rendering [no]
 197   --enable-libbluray       enable BluRay reading using libbluray [no]
 198   --enable-libcaca         enable textual display using libcaca
 199   --enable-libcelt         enable CELT decoding via libcelt [no]
 200   --enable-libcdio         enable audio CD grabbing with libcdio
 201   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 202                            and libraw1394 [no]
 203   --enable-libfaac         enable AAC encoding via libfaac [no]
 204   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
 205   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 206   --enable-libfreetype     enable libfreetype [no]
 207   --enable-libgme          enable Game Music Emu via libgme [no]
 208   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 209   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 210   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 211   --enable-libmodplug      enable ModPlug via libmodplug [no]
 212   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 213   --enable-libnut          enable NUT (de)muxing via libnut,
 214                            native (de)muxer exists [no]
 215   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 216   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 217   --enable-libopencv       enable video filtering via libopencv [no]
 218   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 219   --enable-libopus         enable Opus decoding via libopus [no]
 220   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 221   --enable-libquvi         enable quvi input via libquvi [no]
 222   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 223   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 224   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 225   --enable-libsoxr         enable Include libsoxr resampling [no]
 226   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 227   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 228   --enable-libtheora       enable Theora encoding via libtheora [no]
 229   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 230   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 231   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 232   --enable-libvidstab      enable video stabilization using vid.stab [no]
 233   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 234   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 235   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 236                            native implementation exists [no]
 237   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 238   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 239   --enable-libx264         enable H.264 encoding via x264 [no]
 240   --enable-libxavs         enable AVS encoding via xavs [no]
 241   --enable-libxvid         enable Xvid encoding via xvidcore,
 242                            native MPEG-4/Xvid encoder exists [no]
 243   --enable-libzmq          enable message passing via libzmq [no]
 244   --enable-openal          enable OpenAL 1.1 capture support [no]
 245   --enable-opencl          enable OpenCL code
 246   --enable-openssl         enable openssl [no]
 247   --enable-x11grab         enable X11 grabbing [no]
 248   --disable-zlib           disable zlib [autodetect]
 249
 250 Advanced options (experts only):
 251   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 252   --enable-cross-compile   assume a cross-compiler is used
 253   --sysroot=PATH           root of cross-build tree
 254   --sysinclude=PATH        location of cross-build system headers
 255   --target-os=OS           compiler targets OS [$target_os]
 256   --target-exec=CMD        command to run executables on target
 257   --target-path=DIR        path to view of build directory on target
 258   --target-samples=DIR     path to samples directory on target
 259   --toolchain=NAME         set tool defaults according to NAME
 260   --nm=NM                  use nm tool NM [$nm_default]
 261   --ar=AR                  use archive tool AR [$ar_default]
 262   --as=AS                  use assembler AS [$as_default]
 263   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 264   --cc=CC                  use C compiler CC [$cc_default]
 265   --cxx=CXX                use C compiler CXX [$cxx_default]
 266   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 267   --ld=LD                  use linker LD [$ld_default]
 268   --host-cc=HOSTCC         use host C compiler HOSTCC
 269   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 270   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 271   --host-ld=HOSTLD         use host linker HOSTLD
 272   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 273   --host-libs=HLIBS        use libs HLIBS when linking for host
 274   --host-os=OS             compiler host OS [$target_os]
 275   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 276   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 277   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 278   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 279   --extra-version=STRING   version string suffix []
 280   --optflags=OPTFLAGS      override optimization-related compiler flags
 281   --build-suffix=SUFFIX    library name suffix []
 282   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 283   --progs-suffix=SUFFIX    program name suffix []
 284   --arch=ARCH              select architecture [$arch]
 285   --cpu=CPU                select the minimum required CPU (affects
 286                            instruction selection, may crash on older CPUs)
 287   --enable-pic             build position-independent code
 288   --enable-sram            allow use of on-chip SRAM
 289   --enable-thumb           compile for Thumb instruction set
 290   --disable-symver         disable symbol versioning
 291   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 292   --disable-safe-bitstream-reader
 293                            disable buffer boundary checking in bitreaders
 294                            (faster, but may crash)
 295   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 296   --enable-lto             use link-time optimization
 297
 298 Optimization options (experts only):
 299   --disable-asm            disable all assembler optimizations
 300   --disable-altivec        disable AltiVec optimizations
 301   --disable-amd3dnow       disable 3DNow! optimizations
 302   --disable-amd3dnowext    disable 3DNow! extended optimizations
 303   --disable-mmx            disable MMX optimizations
 304   --disable-mmxext         disable MMXEXT optimizations
 305   --disable-sse            disable SSE optimizations
 306   --disable-sse2           disable SSE2 optimizations
 307   --disable-sse3           disable SSE3 optimizations
 308   --disable-ssse3          disable SSSE3 optimizations
 309   --disable-sse4           disable SSE4 optimizations
 310   --disable-sse42          disable SSE4.2 optimizations
 311   --disable-avx            disable AVX optimizations
 312   --disable-fma4           disable FMA4 optimizations
 313   --disable-armv5te        disable armv5te optimizations
 314   --disable-armv6          disable armv6 optimizations
 315   --disable-armv6t2        disable armv6t2 optimizations
 316   --disable-vfp            disable VFP optimizations
 317   --disable-neon           disable NEON optimizations
 318   --disable-vis            disable VIS optimizations
 319   --disable-inline-asm     disable use of inline assembler
 320   --disable-yasm           disable use of yasm assembler
 321   --disable-mips32r2       disable MIPS32R2 optimizations
 322   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 323   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 324   --disable-mipsfpu        disable floating point MIPS optimizations
 325   --disable-fast-unaligned consider unaligned accesses slow
 326
 327 Developer options (useful when working on FFmpeg itself):
 328   --disable-debug          disable debugging symbols
 329   --enable-debug=LEVEL     set the debug level [$debuglevel]
 330   --disable-optimizations  disable compiler optimizations
 331   --enable-extra-warnings  enable more compiler warnings
 332   --disable-stripping      disable stripping of executables and shared libraries
 333   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 334                            2 causes a slowdown at runtime.
 335   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 336   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 337                            leaks and errors, using the specified valgrind binary.
 338                            Cannot be combined with --target-exec
 339   --enable-ftrapv          Trap arithmetic overflows
 340   --samples=PATH           location of test samples for FATE, if not set use
 341                            \$FATE_SAMPLES at make invocation time.
 342   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 343                            should be used only for debugging purposes)
 344   --enable-random          randomly enable/disable components
 345   --disable-random
 346   --enable-random=LIST     randomly enable/disable specific components or
 347   --disable-random=LIST    component groups. LIST is a comma-separated list
 348                            of NAME[:PROB] entries where NAME is a component
 349                            (group) and PROB the probability associated with
 350                            NAME (default 0.5).
 351   --random-seed=VALUE      seed value for --enable/disable-random
 352
 353 NOTE: Object files are built at the place where configure is launched.
 354 EOF
 355   exit 0
 356 }
 357
 358 quotes='""'
 359
 360 log(){
 361     echo "$@" >> $logfile
 362 }
 363
 364 log_file(){
 365     log BEGIN $1
 366     pr -n -t $1 >> $logfile
 367     log END $1
 368 }
 369
 370 echolog(){
 371     log "$@"
 372     echo "$@"
 373 }
 374
 375 warn(){
 376     log "WARNING: $*"
 377     WARNINGS="${WARNINGS}WARNING: $*\n"
 378 }
 379
 380 die(){
 381     echolog "$@"
 382     cat <<EOF
 383
 384 If you think configure made a mistake, make sure you are using the latest
 385 version from Git.  If the latest version fails, report the problem to the
 386 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 387 EOF
 388     if disabled logging; then
 389         cat <<EOF
 390 Rerun configure with logging enabled (do not use --disable-logging), and
 391 include the log this produces with your report.
 392 EOF
 393     else
 394         cat <<EOF
 395 Include the log file "$logfile" produced by configure as this will help
 396 solving the problem.
 397 EOF
 398     fi
 399     exit 1
 400 }
 401
 402 # Avoid locale weirdness, besides we really just want to translate ASCII.
 403 toupper(){
 404     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 405 }
 406
 407 tolower(){
 408     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 409 }
 410
 411 c_escape(){
 412     echo "$*" | sed 's/["\\]/\\\0/g'
 413 }
 414
 415 sh_quote(){
 416     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 417     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 418     echo "$v"
 419 }
 420
 421 cleanws(){
 422     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 423 }
 424
 425 filter(){
 426     pat=$1
 427     shift
 428     for v; do
 429         eval "case $v in $pat) echo $v ;; esac"
 430     done
 431 }
 432
 433 filter_out(){
 434     pat=$1
 435     shift
 436     for v; do
 437         eval "case $v in $pat) ;; *) echo $v ;; esac"
 438     done
 439 }
 440
 441 map(){
 442     m=$1
 443     shift
 444     for v; do eval $m; done
 445 }
 446
 447 add_suffix(){
 448     suffix=$1
 449     shift
 450     for v; do echo ${v}${suffix}; done
 451 }
 452
 453 set_all(){
 454     value=$1
 455     shift
 456     for var in $*; do
 457         eval $var=$value
 458     done
 459 }
 460
 461 set_weak(){
 462     value=$1
 463     shift
 464     for var; do
 465         eval : \${$var:=$value}
 466     done
 467 }
 468
 469 sanitize_var_name(){
 470     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 471 }
 472
 473 set_safe(){
 474     var=$1
 475     shift
 476     eval $(sanitize_var_name "$var")='$*'
 477 }
 478
 479 get_safe(){
 480     eval echo \$$(sanitize_var_name "$1")
 481 }
 482
 483 pushvar(){
 484     for pvar in $*; do
 485         eval level=\${${pvar}_level:=0}
 486         eval ${pvar}_${level}="\$$pvar"
 487         eval ${pvar}_level=$(($level+1))
 488     done
 489 }
 490
 491 popvar(){
 492     for pvar in $*; do
 493         eval level=\${${pvar}_level:-0}
 494         test $level = 0 && continue
 495         eval level=$(($level-1))
 496         eval $pvar="\${${pvar}_${level}}"
 497         eval ${pvar}_level=$level
 498         eval unset ${pvar}_${level}
 499     done
 500 }
 501
 502 enable(){
 503     set_all yes $*
 504 }
 505
 506 disable(){
 507     set_all no $*
 508 }
 509
 510 enable_weak(){
 511     set_weak yes $*
 512 }
 513
 514 disable_weak(){
 515     set_weak no $*
 516 }
 517
 518 enable_safe(){
 519     for var; do
 520         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 521     done
 522 }
 523
 524 disable_safe(){
 525     for var; do
 526         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 527     done
 528 }
 529
 530 do_enable_deep(){
 531     for var; do
 532         enabled $var && continue
 533         eval sel="\$${var}_select"
 534         eval sgs="\$${var}_suggest"
 535         pushvar var sgs
 536         enable_deep $sel
 537         popvar sgs
 538         enable_deep_weak $sgs
 539         popvar var
 540     done
 541 }
 542
 543 enable_deep(){
 544     do_enable_deep $*
 545     enable $*
 546 }
 547
 548 enable_deep_weak(){
 549     for var; do
 550         disabled $var && continue
 551         pushvar var
 552         do_enable_deep $var
 553         popvar var
 554         enable_weak $var
 555     done
 556 }
 557
 558 enabled(){
 559     test "${1#!}" = "$1" && op== || op=!=
 560     eval test "x\$${1#!}" $op "xyes"
 561 }
 562
 563 disabled(){
 564     test "${1#!}" = "$1" && op== || op=!=
 565     eval test "x\$${1#!}" $op "xno"
 566 }
 567
 568 enabled_all(){
 569     for opt; do
 570         enabled $opt || return 1
 571     done
 572 }
 573
 574 disabled_all(){
 575     for opt; do
 576         disabled $opt || return 1
 577     done
 578 }
 579
 580 enabled_any(){
 581     for opt; do
 582         enabled $opt && return 0
 583     done
 584 }
 585
 586 disabled_any(){
 587     for opt; do
 588         disabled $opt && return 0
 589     done
 590     return 1
 591 }
 592
 593 set_default(){
 594     for opt; do
 595         eval : \${$opt:=\$${opt}_default}
 596     done
 597 }
 598
 599 is_in(){
 600     value=$1
 601     shift
 602     for var in $*; do
 603         [ $var = $value ] && return 0
 604     done
 605     return 1
 606 }
 607
 608 do_check_deps(){
 609     for cfg; do
 610         cfg="${cfg#!}"
 611         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 612         disabled ${cfg}_checking && continue
 613         enable ${cfg}_checking
 614         append allopts $cfg
 615
 616         eval dep_all="\$${cfg}_deps"
 617         eval dep_any="\$${cfg}_deps_any"
 618         eval dep_sel="\$${cfg}_select"
 619         eval dep_sgs="\$${cfg}_suggest"
 620         eval dep_ifa="\$${cfg}_if"
 621         eval dep_ifn="\$${cfg}_if_any"
 622
 623         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 624         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 625         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 626
 627         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 628         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 629         enabled_all  $dep_all || disable $cfg
 630         enabled_any  $dep_any || disable $cfg
 631         disabled_any $dep_sel && disable $cfg
 632
 633         if enabled $cfg; then
 634             enable_deep $dep_sel
 635             enable_deep_weak $dep_sgs
 636         fi
 637
 638         disable ${cfg}_checking
 639     done
 640 }
 641
 642 check_deps(){
 643     unset allopts
 644
 645     do_check_deps "$@"
 646
 647     for cfg in $allopts; do
 648         enabled $cfg || continue
 649         eval dep_extralibs="\$${cfg}_extralibs"
 650         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 651     done
 652 }
 653
 654 print_config(){
 655     pfx=$1
 656     files=$2
 657     shift 2
 658     map 'eval echo "$v \${$v:-no}"' "$@" |
 659     awk "BEGIN { split(\"$files\", files) }
 660         {
 661             c = \"$pfx\" toupper(\$1);
 662             v = \$2;
 663             sub(/yes/, 1, v);
 664             sub(/no/,  0, v);
 665             for (f in files) {
 666                 file = files[f];
 667                 if (file ~ /\\.h\$/) {
 668                     printf(\"#define %s %d\\n\", c, v) >>file;
 669                 } else if (file ~ /\\.asm\$/) {
 670                     printf(\"%%define %s %d\\n\", c, v) >>file;
 671                 } else if (file ~ /\\.mak\$/) {
 672                     n = -v ? \"\" : \"!\";
 673                     printf(\"%s%s=yes\\n\", n, c) >>file;
 674                 } else if (file ~ /\\.texi\$/) {
 675                     pre = -v ? \"\" : \"@c \";
 676                     yesno = \$2;
 677                     c2 = tolower(c);
 678                     gsub(/_/, \"-\", c2);
 679                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 680                 }
 681             }
 682         }"
 683 }
 684
 685 print_enabled(){
 686     suf=$1
 687     shift
 688     for v; do
 689         enabled $v && printf "%s\n" ${v%$suf};
 690     done
 691 }
 692
 693 append(){
 694     var=$1
 695     shift
 696     eval "$var=\"\$$var $*\""
 697 }
 698
 699 prepend(){
 700     var=$1
 701     shift
 702     eval "$var=\"$* \$$var\""
 703 }
 704
 705 add_cppflags(){
 706     append CPPFLAGS "$@"
 707 }
 708
 709 add_cflags(){
 710     append CFLAGS $($cflags_filter "$@")
 711 }
 712
 713 add_cxxflags(){
 714     append CXXFLAGS $($cflags_filter "$@")
 715 }
 716
 717 add_asflags(){
 718     append ASFLAGS $($asflags_filter "$@")
 719 }
 720
 721 add_ldflags(){
 722     append LDFLAGS $($ldflags_filter "$@")
 723 }
 724
 725 add_extralibs(){
 726     prepend extralibs $($ldflags_filter "$@")
 727 }
 728
 729 add_host_cppflags(){
 730     append host_cppflags "$@"
 731 }
 732
 733 add_host_cflags(){
 734     append host_cflags $($host_cflags_filter "$@")
 735 }
 736
 737 add_host_ldflags(){
 738     append host_ldflags $($host_ldflags_filter "$@")
 739 }
 740
 741 add_compat(){
 742     append compat_objs $1
 743     shift
 744     map 'add_cppflags -D$v' "$@"
 745 }
 746
 747 check_cmd(){
 748     log "$@"
 749     "$@" >> $logfile 2>&1
 750 }
 751
 752 cc_o(){
 753     eval printf '%s\\n' $CC_O
 754 }
 755
 756 cc_e(){
 757     eval printf '%s\\n' $CC_E
 758 }
 759
 760 check_cc(){
 761     log check_cc "$@"
 762     cat > $TMPC
 763     log_file $TMPC
 764     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 765 }
 766
 767 check_cxx(){
 768     log check_cxx "$@"
 769     cat > $TMPCPP
 770     log_file $TMPCPP
 771     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 772 }
 773
 774 check_cpp(){
 775     log check_cpp "$@"
 776     cat > $TMPC
 777     log_file $TMPC
 778     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 779 }
 780
 781 as_o(){
 782     eval printf '%s\\n' $AS_O
 783 }
 784
 785 check_as(){
 786     log check_as "$@"
 787     cat > $TMPS
 788     log_file $TMPS
 789     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 790 }
 791
 792 check_inline_asm(){
 793     log check_inline_asm "$@"
 794     name="$1"
 795     code="$2"
 796     shift 2
 797     disable $name
 798     check_cc "$@" <<EOF && enable $name
 799 void foo(void){ __asm__ volatile($code); }
 800 EOF
 801 }
 802
 803 check_insn(){
 804     log check_insn "$@"
 805     check_inline_asm ${1}_inline "\"$2\""
 806     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 807 }
 808
 809 check_yasm(){
 810     log check_yasm "$@"
 811     echo "$1" > $TMPS
 812     log_file $TMPS
 813     shift 1
 814     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 815 }
 816
 817 ld_o(){
 818     eval printf '%s\\n' $LD_O
 819 }
 820
 821 check_ld(){
 822     log check_ld "$@"
 823     type=$1
 824     shift 1
 825     flags=$(filter_out '-l*|*.so' $@)
 826     libs=$(filter '-l*|*.so' $@)
 827     check_$type $($cflags_filter $flags) || return
 828     flags=$($ldflags_filter $flags)
 829     libs=$($ldflags_filter $libs)
 830     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 831 }
 832
 833 check_code(){
 834     log check_code "$@"
 835     check=$1
 836     headers=$2
 837     code=$3
 838     shift 3
 839     {
 840         for hdr in $headers; do
 841             echo "#include <$hdr>"
 842         done
 843         echo "int main(void) { $code; return 0; }"
 844     } | check_$check "$@"
 845 }
 846
 847 check_cppflags(){
 848     log check_cppflags "$@"
 849     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 850 int x;
 851 EOF
 852 }
 853
 854 check_cflags(){
 855     log check_cflags "$@"
 856     set -- $($cflags_filter "$@")
 857     check_cc "$@" <<EOF && append CFLAGS "$@"
 858 int x;
 859 EOF
 860 }
 861
 862 check_cxxflags(){
 863     log check_cxxflags "$@"
 864     set -- $($cflags_filter "$@")
 865     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 866 int x;
 867 EOF
 868 }
 869
 870 test_ldflags(){
 871     log test_ldflags "$@"
 872     check_ld "cc" "$@" <<EOF
 873 int main(void){ return 0; }
 874 EOF
 875 }
 876
 877 check_ldflags(){
 878     log check_ldflags "$@"
 879     test_ldflags "$@" && add_ldflags "$@"
 880 }
 881
 882 check_header(){
 883     log check_header "$@"
 884     header=$1
 885     shift
 886     disable_safe $header
 887     check_cpp "$@" <<EOF && enable_safe $header
 888 #include <$header>
 889 int x;
 890 EOF
 891 }
 892
 893 check_func(){
 894     log check_func "$@"
 895     func=$1
 896     shift
 897     disable $func
 898     check_ld "cc" "$@" <<EOF && enable $func
 899 extern int $func();
 900 int main(void){ $func(); }
 901 EOF
 902 }
 903
 904 check_mathfunc(){
 905     log check_mathfunc "$@"
 906     func=$1
 907     narg=$2
 908     shift 2
 909     test $narg = 2 && args="f, g" || args="f"
 910     disable $func
 911     check_ld "cc" "$@" <<EOF && enable $func
 912 #include <math.h>
 913 float foo(float f, float g) { return $func($args); }
 914 int main(void){ return (int) foo; }
 915 EOF
 916 }
 917
 918 check_func_headers(){
 919     log check_func_headers "$@"
 920     headers=$1
 921     funcs=$2
 922     shift 2
 923     {
 924         for hdr in $headers; do
 925             echo "#include <$hdr>"
 926         done
 927         for func in $funcs; do
 928             echo "long check_$func(void) { return (long) $func; }"
 929         done
 930         echo "int main(void) { return 0; }"
 931     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
 932 }
 933
 934 check_class_headers_cpp(){
 935     log check_class_headers_cpp "$@"
 936     headers=$1
 937     classes=$2
 938     shift 2
 939     {
 940         for hdr in $headers; do
 941             echo "#include <$hdr>"
 942         done
 943         echo "int main(void) { "
 944         i=1
 945         for class in $classes; do
 946             echo "$class obj$i;"
 947             i=$(expr $i + 1)
 948         done
 949         echo "return 0; }"
 950     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
 951 }
 952
 953 check_cpp_condition(){
 954     log check_cpp_condition "$@"
 955     header=$1
 956     condition=$2
 957     shift 2
 958     check_cpp "$@" <<EOF
 959 #include <$header>
 960 #if !($condition)
 961 #error "unsatisfied condition: $condition"
 962 #endif
 963 EOF
 964 }
 965
 966 check_lib(){
 967     log check_lib "$@"
 968     header="$1"
 969     func="$2"
 970     shift 2
 971     check_header $header && check_func $func "$@" && add_extralibs "$@"
 972 }
 973
 974 check_lib2(){
 975     log check_lib2 "$@"
 976     headers="$1"
 977     funcs="$2"
 978     shift 2
 979     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 980 }
 981
 982 check_lib_cpp(){
 983     log check_lib_cpp "$@"
 984     headers="$1"
 985     classes="$2"
 986     shift 2
 987     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
 988 }
 989
 990 check_pkg_config(){
 991     log check_pkg_config "$@"
 992     pkg="$1"
 993     headers="$2"
 994     funcs="$3"
 995     shift 3
 996     $pkg_config --exists $pkg 2>/dev/null || return
 997     pkg_cflags=$($pkg_config --cflags $pkg)
 998     pkg_libs=$($pkg_config --libs $pkg)
 999     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1000         set_safe ${pkg}_cflags $pkg_cflags   &&
1001         set_safe ${pkg}_libs   $pkg_libs
1002 }
1003
1004 check_exec(){
1005     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1006 }
1007
1008 check_exec_crash(){
1009     code=$(cat)
1010
1011     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1012     # are safe but may not be available everywhere.  Thus we use
1013     # raise(SIGTERM) instead.  The check is run in a subshell so we
1014     # can redirect the "Terminated" message from the shell.  SIGBUS
1015     # is not defined by standard C so it is used conditionally.
1016
1017     (check_exec "$@") >> $logfile 2>&1 <<EOF
1018 #include <signal.h>
1019 static void sighandler(int sig){
1020     raise(SIGTERM);
1021 }
1022 int foo(void){
1023     $code
1024 }
1025 int (*func_ptr)(void) = foo;
1026 int main(void){
1027     signal(SIGILL, sighandler);
1028     signal(SIGFPE, sighandler);
1029     signal(SIGSEGV, sighandler);
1030 #ifdef SIGBUS
1031     signal(SIGBUS, sighandler);
1032 #endif
1033     return func_ptr();
1034 }
1035 EOF
1036 }
1037
1038 check_type(){
1039     log check_type "$@"
1040     headers=$1
1041     type=$2
1042     shift 2
1043     disable_safe "$type"
1044     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1045 }
1046
1047 check_struct(){
1048     log check_struct "$@"
1049     headers=$1
1050     struct=$2
1051     member=$3
1052     shift 3
1053     disable_safe "${struct}_${member}"
1054     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1055         enable_safe "${struct}_${member}"
1056 }
1057
1058 check_builtin(){
1059     log check_builtin "$@"
1060     name=$1
1061     headers=$2
1062     builtin=$3
1063     shift 3
1064     disable "$name"
1065     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1066 }
1067
1068 require(){
1069     name="$1"
1070     header="$2"
1071     func="$3"
1072     shift 3
1073     check_lib $header $func "$@" || die "ERROR: $name not found"
1074 }
1075
1076 require2(){
1077     name="$1"
1078     headers="$2"
1079     func="$3"
1080     shift 3
1081     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1082 }
1083
1084 require_cpp(){
1085     name="$1"
1086     headers="$2"
1087     classes="$3"
1088     shift 3
1089     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1090 }
1091
1092 require_pkg_config(){
1093     pkg="$1"
1094     check_pkg_config "$@" || die "ERROR: $pkg not found"
1095     add_cflags    $(get_safe ${pkg}_cflags)
1096     add_extralibs $(get_safe ${pkg}_libs)
1097 }
1098
1099 hostcc_o(){
1100     eval printf '%s\\n' $HOSTCC_O
1101 }
1102
1103 check_host_cc(){
1104     log check_host_cc "$@"
1105     cat > $TMPC
1106     log_file $TMPC
1107     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1108 }
1109
1110 check_host_cppflags(){
1111     log check_host_cppflags "$@"
1112     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1113 int x;
1114 EOF
1115 }
1116
1117 check_host_cflags(){
1118     log check_host_cflags "$@"
1119     set -- $($host_cflags_filter "$@")
1120     check_host_cc "$@" <<EOF && append host_cflags "$@"
1121 int x;
1122 EOF
1123 }
1124
1125 apply(){
1126     file=$1
1127     shift
1128     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1129 }
1130
1131 cp_if_changed(){
1132     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1133     mkdir -p "$(dirname $2)"
1134     $cp_f "$1" "$2"
1135 }
1136
1137 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1138 # system-dependent things.
1139
1140 COMPONENT_LIST="
1141     bsfs
1142     decoders
1143     demuxers
1144     encoders
1145     filters
1146     hwaccels
1147     indevs
1148     muxers
1149     outdevs
1150     parsers
1151     protocols
1152 "
1153
1154 EXTERNAL_LIBRARY_LIST="
1155     avisynth
1156     bzlib
1157     crystalhd
1158     fontconfig
1159     frei0r
1160     gnutls
1161     iconv
1162     libaacplus
1163     libass
1164     libbluray
1165     libcaca
1166     libcdio
1167     libcelt
1168     libdc1394
1169     libfaac
1170     libfdk_aac
1171     libflite
1172     libfreetype
1173     libgme
1174     libgsm
1175     libiec61883
1176     libilbc
1177     libmodplug
1178     libmp3lame
1179     libnut
1180     libopencore_amrnb
1181     libopencore_amrwb
1182     libopencv
1183     libopenjpeg
1184     libopus
1185     libpulse
1186     libquvi
1187     librtmp
1188     libschroedinger
1189     libshine
1190     libsoxr
1191     libspeex
1192     libstagefright_h264
1193     libtheora
1194     libtwolame
1195     libutvideo
1196     libv4l2
1197     libvidstab
1198     libvo_aacenc
1199     libvo_amrwbenc
1200     libvorbis
1201     libvpx
1202     libwavpack
1203     libx264
1204     libxavs
1205     libxvid
1206     libzmq
1207     openal
1208     opencl
1209     openssl
1210     x11grab
1211     zlib
1212 "
1213
1214 DOCUMENT_LIST="
1215     doc
1216     htmlpages
1217     manpages
1218     podpages
1219     txtpages
1220 "
1221
1222 HWACCEL_LIST="
1223     dxva2
1224     vaapi
1225     vda
1226     vdpau
1227 "
1228
1229 LIBRARY_LIST="
1230     avcodec
1231     avdevice
1232     avfilter
1233     avformat
1234     avresample
1235     avutil
1236     postproc
1237     swresample
1238     swscale
1239 "
1240
1241 PROGRAM_LIST="
1242     ffplay
1243     ffprobe
1244     ffserver
1245     ffmpeg
1246 "
1247
1248 CONFIG_LIST="
1249     $COMPONENT_LIST
1250     $DOCUMENT_LIST
1251     $EXTERNAL_LIBRARY_LIST
1252     $HWACCEL_LIST
1253     $LIBRARY_LIST
1254     $PROGRAM_LIST
1255     dct
1256     dwt
1257     error_resilience
1258     fast_unaligned
1259     fft
1260     ftrapv
1261     gpl
1262     gray
1263     hardcoded_tables
1264     incompatible_libav_abi
1265     incompatible_fork_abi
1266     lsp
1267     lzo
1268     mdct
1269     memalign_hack
1270     memory_poisoning
1271     network
1272     nonfree
1273     pic
1274     rdft
1275     runtime_cpudetect
1276     safe_bitstream_reader
1277     shared
1278     small
1279     sram
1280     static
1281     swscale_alpha
1282     thumb
1283     version3
1284     xmm_clobber_test
1285 "
1286
1287 THREADS_LIST='
1288     pthreads
1289     w32threads
1290     os2threads
1291 '
1292
1293 ATOMICS_LIST='
1294     atomics_gcc
1295     atomics_suncc
1296     atomics_win32
1297 '
1298
1299 ARCH_LIST='
1300     aarch64
1301     alpha
1302     arm
1303     avr32
1304     avr32_ap
1305     avr32_uc
1306     bfin
1307     ia64
1308     m68k
1309     mips
1310     mips64
1311     parisc
1312     ppc
1313     ppc64
1314     s390
1315     sh4
1316     sparc
1317     sparc64
1318     tilegx
1319     tilepro
1320     tomi
1321     x86
1322     x86_32
1323     x86_64
1324 '
1325
1326 ARCH_EXT_LIST_ARM='
1327     armv5te
1328     armv6
1329     armv6t2
1330     neon
1331     vfp
1332     vfpv3
1333 '
1334
1335 ARCH_EXT_LIST_X86='
1336     amd3dnow
1337     amd3dnowext
1338     avx
1339     fma4
1340     mmx
1341     mmxext
1342     sse
1343     sse2
1344     sse3
1345     sse4
1346     sse42
1347     ssse3
1348 '
1349
1350 ARCH_EXT_LIST="
1351     $ARCH_EXT_LIST_ARM
1352     $ARCH_EXT_LIST_X86
1353     altivec
1354     ppc4xx
1355     vis
1356     mipsfpu
1357     mips32r2
1358     mipsdspr1
1359     mipsdspr2
1360 "
1361
1362 HAVE_LIST_CMDLINE='
1363     inline_asm
1364     symver
1365     yasm
1366 '
1367
1368 HAVE_LIST_PUB='
1369     bigendian
1370     fast_unaligned
1371     incompatible_libav_abi
1372     incompatible_fork_abi
1373 '
1374
1375 MATH_FUNCS="
1376     atanf
1377     atan2f
1378     cbrt
1379     cbrtf
1380     cosf
1381     exp2
1382     exp2f
1383     expf
1384     isinf
1385     isnan
1386     ldexpf
1387     llrint
1388     llrintf
1389     log2
1390     log2f
1391     log10f
1392     lrint
1393     lrintf
1394     powf
1395     rint
1396     round
1397     roundf
1398     sinf
1399     trunc
1400     truncf
1401 "
1402
1403 HAVE_LIST="
1404     $ARCH_EXT_LIST
1405     $(add_suffix _external $ARCH_EXT_LIST)
1406     $(add_suffix _inline   $ARCH_EXT_LIST)
1407     $HAVE_LIST_CMDLINE
1408     $HAVE_LIST_PUB
1409     $THREADS_LIST
1410     $ATOMICS_LIST
1411     $MATH_FUNCS
1412     access
1413     aligned_malloc
1414     aligned_stack
1415     alsa_asoundlib_h
1416     altivec_h
1417     arpa_inet_h
1418     asm_mod_q
1419     asm_mod_y
1420     asm_types_h
1421     atomic_cas_ptr
1422     atomics_native
1423     attribute_may_alias
1424     attribute_packed
1425     cdio_paranoia_h
1426     cdio_paranoia_paranoia_h
1427     CL_cl_h
1428     clock_gettime
1429     closesocket
1430     CommandLineToArgvW
1431     cpunop
1432     CryptGenRandom
1433     dcbzl
1434     dev_bktr_ioctl_bt848_h
1435     dev_bktr_ioctl_meteor_h
1436     dev_ic_bt8xx_h
1437     dev_video_bktr_ioctl_bt848_h
1438     dev_video_meteor_ioctl_meteor_h
1439     direct_h
1440     dlfcn_h
1441     dlopen
1442     dos_paths
1443     dxva_h
1444     ebp_available
1445     ebx_available
1446     fast_64bit
1447     fast_clz
1448     fast_cmov
1449     fcntl
1450     fork
1451     getaddrinfo
1452     gethrtime
1453     getopt
1454     GetProcessAffinityMask
1455     GetProcessMemoryInfo
1456     GetProcessTimes
1457     GetSystemTimeAsFileTime
1458     getrusage
1459     getservbyport
1460     gettimeofday
1461     glob
1462     gnu_as
1463     gsm_h
1464     i686
1465     ibm_asm
1466     inet_aton
1467     io_h
1468     inline_asm_labels
1469     isatty
1470     jack_port_get_latency_range
1471     kbhit
1472     ldbrx
1473     libdc1394_1
1474     libdc1394_2
1475     local_aligned_16
1476     local_aligned_8
1477     localtime_r
1478     loongson
1479     lzo1x_999_compress
1480     machine_ioctl_bt848_h
1481     machine_ioctl_meteor_h
1482     machine_rw_barrier
1483     makeinfo
1484     malloc_h
1485     MapViewOfFile
1486     memalign
1487     MemoryBarrier
1488     mkstemp
1489     mm_empty
1490     mmap
1491     mprotect
1492     msvcrt
1493     nanosleep
1494     openjpeg_1_5_openjpeg_h
1495     PeekNamedPipe
1496     perl
1497     pod2man
1498     poll_h
1499     posix_memalign
1500     pthread_cancel
1501     rdtsc
1502     rsync_contimeout
1503     sarestart
1504     sched_getaffinity
1505     sdl
1506     SetConsoleTextAttribute
1507     setmode
1508     setrlimit
1509     Sleep
1510     sndio_h
1511     socklen_t
1512     soundcard_h
1513     strerror_r
1514     struct_addrinfo
1515     struct_group_source_req
1516     struct_ip_mreq_source
1517     struct_ipv6_mreq
1518     struct_pollfd
1519     struct_rusage_ru_maxrss
1520     struct_sctp_event_subscribe
1521     struct_sockaddr_in6
1522     struct_sockaddr_sa_len
1523     struct_sockaddr_storage
1524     struct_stat_st_mtim_tv_nsec
1525     struct_v4l2_frmivalenum_discrete
1526     symver_asm_label
1527     symver_gnu_asm
1528     sync_val_compare_and_swap
1529     sysconf
1530     sysctl
1531     sys_mman_h
1532     sys_param_h
1533     sys_resource_h
1534     sys_select_h
1535     sys_soundcard_h
1536     sys_time_h
1537     sys_videoio_h
1538     termios_h
1539     texi2html
1540     threads
1541     unistd_h
1542     usleep
1543     vfp_args
1544     VirtualAlloc
1545     windows_h
1546     winsock2_h
1547     xform_asm
1548     xmm_clobbers
1549 "
1550
1551 # options emitted with CONFIG_ prefix but not available on the command line
1552 CONFIG_EXTRA="
1553     aandcttables
1554     ac3dsp
1555     audio_frame_queue
1556     dsputil
1557     frame_thread_encoder
1558     gcrypt
1559     golomb
1560     gplv3
1561     h264chroma
1562     h264dsp
1563     h264pred
1564     h264qpel
1565     hpeldsp
1566     huffman
1567     lgplv3
1568     lpc
1569     mpegaudio
1570     mpegaudiodsp
1571     mpegvideo
1572     mpegvideoenc
1573     nettle
1574     rangecoder
1575     rtpdec
1576     rtpenc_chain
1577     sinewin
1578     videodsp
1579     vp3dsp
1580 "
1581
1582 CMDLINE_SELECT="
1583     $ARCH_EXT_LIST
1584     $CONFIG_LIST
1585     $HAVE_LIST_CMDLINE
1586     $THREADS_LIST
1587     asm
1588     cross_compile
1589     debug
1590     extra_warnings
1591     logging
1592     lto
1593     optimizations
1594     stripping
1595 "
1596
1597 PATHS_LIST='
1598     bindir
1599     datadir
1600     incdir
1601     libdir
1602     mandir
1603     prefix
1604     shlibdir
1605 '
1606
1607 CMDLINE_SET="
1608     $PATHS_LIST
1609     ar
1610     arch
1611     as
1612     assert_level
1613     build_suffix
1614     cc
1615     cpu
1616     cross_prefix
1617     cxx
1618     dep_cc
1619     extra_version
1620     host_cc
1621     host_cflags
1622     host_ld
1623     host_ldflags
1624     host_libs
1625     host_os
1626     install
1627     ld
1628     logfile
1629     malloc_prefix
1630     nm
1631     optflags
1632     pkg_config
1633     progs_suffix
1634     random_seed
1635     samples
1636     strip
1637     sysinclude
1638     sysroot
1639     target_exec
1640     target_os
1641     target_path
1642     target_samples
1643     toolchain
1644     valgrind
1645     yasmexe
1646 "
1647
1648 CMDLINE_APPEND="
1649     extra_cflags
1650     extra_cxxflags
1651     host_cppflags
1652 "
1653
1654 # code dependency declarations
1655
1656 # architecture extensions
1657
1658 armv5te_deps="arm"
1659 armv6_deps="arm"
1660 armv6t2_deps="arm"
1661 neon_deps="arm"
1662 vfp_deps="arm"
1663 vfpv3_deps="vfp"
1664
1665 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1666
1667 mipsfpu_deps="mips"
1668 mips32r2_deps="mips"
1669 mipsdspr1_deps="mips"
1670 mipsdspr2_deps="mips"
1671
1672 altivec_deps="ppc"
1673 ppc4xx_deps="ppc"
1674
1675 vis_deps="sparc"
1676
1677 x86_64_suggest="fast_cmov i686"
1678
1679 amd3dnow_deps="mmx"
1680 amd3dnowext_deps="amd3dnow"
1681 mmx_deps="x86"
1682 mmxext_deps="mmx"
1683 sse_deps="mmxext"
1684 sse2_deps="sse"
1685 sse3_deps="sse2"
1686 ssse3_deps="sse3"
1687 sse4_deps="ssse3"
1688 sse42_deps="sse4"
1689 avx_deps="sse42"
1690 fma4_deps="avx"
1691
1692 mmx_external_deps="yasm"
1693 mmx_inline_deps="inline_asm"
1694 mmx_suggest="mmx_external mmx_inline"
1695
1696 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1697     eval dep=\$${ext}_deps
1698     eval ${ext}_external_deps='"${dep}_external"'
1699     eval ${ext}_inline_deps='"${dep}_inline"'
1700     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1701 done
1702
1703 aligned_stack_if_any="ppc x86"
1704 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1705 fast_clz_if_any="alpha avr32 mips ppc x86"
1706 fast_unaligned_if_any="ppc x86"
1707
1708 inline_asm_deps="!tms470"
1709 need_memalign="altivec neon sse"
1710
1711 symver_if_any="symver_asm_label symver_gnu_asm"
1712
1713 log2_deps="!msvcrt"
1714
1715 # subsystems
1716 dct_select="rdft"
1717 error_resilience_select="dsputil"
1718 frame_thread_encoder_deps="encoders threads"
1719 lpc_select="dsputil"
1720 mdct_select="fft"
1721 rdft_select="fft"
1722 mpegaudio_select="mpegaudiodsp"
1723 mpegaudiodsp_select="dct"
1724 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1725 mpegvideoenc_select="mpegvideo"
1726
1727 # decoders / encoders
1728 aac_decoder_select="mdct sinewin"
1729 aac_encoder_select="audio_frame_queue mdct sinewin"
1730 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1731 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1732 ac3_encoder_select="mdct ac3dsp dsputil"
1733 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1734 aic_decoder_select="dsputil golomb"
1735 alac_encoder_select="lpc"
1736 als_decoder_select="dsputil"
1737 amrnb_decoder_select="lsp"
1738 amrwb_decoder_select="lsp"
1739 amv_decoder_select="dsputil hpeldsp"
1740 amv_encoder_select="aandcttables"
1741 ape_decoder_select="dsputil"
1742 asv1_decoder_select="dsputil"
1743 asv1_encoder_select="dsputil"
1744 asv2_decoder_select="dsputil"
1745 asv2_encoder_select="dsputil"
1746 atrac1_decoder_select="mdct sinewin"
1747 atrac3_decoder_select="mdct"
1748 bink_decoder_select="dsputil hpeldsp"
1749 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1750 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1751 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1752 cllc_decoder_select="dsputil"
1753 comfortnoise_encoder_select="lpc"
1754 cook_decoder_select="dsputil mdct sinewin"
1755 cscd_decoder_select="lzo"
1756 cscd_decoder_suggest="zlib"
1757 dca_decoder_select="mdct"
1758 dirac_decoder_select="dsputil dwt golomb videodsp"
1759 dnxhd_decoder_select="dsputil"
1760 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1761 dvvideo_decoder_select="dsputil"
1762 dvvideo_encoder_select="dsputil"
1763 dxa_decoder_select="zlib"
1764 eac3_decoder_select="ac3_decoder"
1765 eac3_encoder_select="ac3_encoder"
1766 eamad_decoder_select="aandcttables dsputil mpegvideo"
1767 eatgq_decoder_select="aandcttables"
1768 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1769 exr_decoder_select="zlib"
1770 ffv1_decoder_select="dsputil golomb rangecoder"
1771 ffv1_encoder_select="dsputil rangecoder"
1772 ffvhuff_decoder_select="dsputil"
1773 ffvhuff_encoder_select="dsputil huffman"
1774 flac_decoder_select="golomb"
1775 flac_encoder_select="dsputil golomb lpc"
1776 flashsv_decoder_select="zlib"
1777 flashsv_encoder_select="zlib"
1778 flashsv2_encoder_select="zlib"
1779 flashsv2_decoder_select="zlib"
1780 flv_decoder_select="h263_decoder"
1781 flv_encoder_select="h263_encoder"
1782 fourxm_decoder_select="dsputil"
1783 fraps_decoder_select="dsputil huffman"
1784 g2m_decoder_select="dsputil zlib"
1785 g729_decoder_select="dsputil"
1786 h261_decoder_select="error_resilience mpegvideo"
1787 h261_encoder_select="aandcttables mpegvideoenc"
1788 h263_decoder_select="error_resilience h263_parser mpegvideo"
1789 h263_encoder_select="aandcttables mpegvideoenc"
1790 h263i_decoder_select="h263_decoder"
1791 h263p_encoder_select="h263_encoder"
1792 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1793 h264_decoder_suggest="error_resilience"
1794 huffyuv_decoder_select="dsputil"
1795 huffyuv_encoder_select="dsputil huffman"
1796 iac_decoder_select="dsputil fft mdct sinewin"
1797 imc_decoder_select="dsputil fft mdct sinewin"
1798 indeo3_decoder_select="hpeldsp"
1799 interplay_video_decoder_select="hpeldsp"
1800 jpegls_decoder_select="dsputil golomb hpeldsp"
1801 jpegls_encoder_select="golomb"
1802 jv_decoder_select="dsputil"
1803 lagarith_decoder_select="dsputil"
1804 ljpeg_encoder_select="aandcttables mpegvideoenc"
1805 loco_decoder_select="golomb"
1806 mdec_decoder_select="dsputil error_resilience mpegvideo"
1807 mimic_decoder_select="dsputil hpeldsp"
1808 mjpeg_decoder_select="dsputil hpeldsp"
1809 mjpegb_decoder_select="dsputil hpeldsp"
1810 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1811 mlp_decoder_select="dsputil mlp_parser"
1812 motionpixels_decoder_select="dsputil"
1813 mp1_decoder_select="mpegaudio"
1814 mp1float_decoder_select="mpegaudio"
1815 mp2_decoder_select="mpegaudio"
1816 mp2float_decoder_select="mpegaudio"
1817 mp3_decoder_select="mpegaudio"
1818 mp3adu_decoder_select="mpegaudio"
1819 mp3adufloat_decoder_select="mpegaudio"
1820 mp3float_decoder_select="mpegaudio"
1821 mp3on4_decoder_select="mpegaudio"
1822 mp3on4float_decoder_select="mpegaudio"
1823 mpc7_decoder_select="dsputil mpegaudiodsp"
1824 mpc8_decoder_select="dsputil mpegaudiodsp"
1825 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1826 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1827 mpeg1video_decoder_select="error_resilience mpegvideo"
1828 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1829 mpeg2video_decoder_select="error_resilience mpegvideo"
1830 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1831 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1832 mpeg4_encoder_select="h263_encoder"
1833 msmpeg4v1_decoder_select="h263_decoder"
1834 msmpeg4v2_decoder_select="h263_decoder"
1835 msmpeg4v2_encoder_select="h263_encoder"
1836 msmpeg4v3_decoder_select="h263_decoder"
1837 msmpeg4v3_encoder_select="h263_encoder"
1838 mss2_decoder_select="error_resilience vc1_decoder"
1839 mxpeg_decoder_select="dsputil hpeldsp"
1840 nellymoser_decoder_select="mdct sinewin"
1841 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1842 nuv_decoder_select="dsputil lzo"
1843 png_decoder_select="zlib"
1844 png_encoder_select="dsputil zlib"
1845 prores_decoder_select="dsputil"
1846 prores_encoder_select="dsputil"
1847 qcelp_decoder_select="lsp"
1848 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1849 ra_144_encoder_select="audio_frame_queue lpc"
1850 ralf_decoder_select="golomb"
1851 rtjpeg_decoder_select="dsputil"
1852 rv10_decoder_select="error_resilience h263_decoder"
1853 rv10_encoder_select="h263_encoder"
1854 rv20_decoder_select="error_resilience h263_decoder"
1855 rv20_encoder_select="h263_encoder"
1856 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1857 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1858 shorten_decoder_select="golomb"
1859 sipr_decoder_select="lsp"
1860 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1861 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1862 sonic_decoder_select="golomb"
1863 sonic_encoder_select="golomb"
1864 sonic_ls_encoder_select="golomb"
1865 sp5x_decoder_select="dsputil hpeldsp"
1866 svq1_decoder_select="hpeldsp"
1867 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1868 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1869 svq3_decoder_suggest="error_resilience zlib"
1870 tak_decoder_select="dsputil"
1871 theora_decoder_select="vp3_decoder"
1872 tiff_decoder_suggest="zlib"
1873 tiff_encoder_suggest="zlib"
1874 thp_decoder_select="dsputil hpeldsp"
1875 truehd_decoder_select="mlp_parser"
1876 truemotion2_decoder_select="dsputil"
1877 truespeech_decoder_select="dsputil"
1878 tscc_decoder_select="zlib"
1879 twinvq_decoder_select="mdct lsp sinewin"
1880 utvideo_decoder_select="dsputil"
1881 utvideo_encoder_select="dsputil huffman"
1882 vble_decoder_select="dsputil"
1883 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1884 vc1image_decoder_select="vc1_decoder"
1885 vorbis_decoder_select="mdct"
1886 vorbis_encoder_select="mdct"
1887 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1888 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1889 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1890 vp6a_decoder_select="vp6_decoder"
1891 vp6f_decoder_select="vp6_decoder"
1892 vp8_decoder_select="h264pred videodsp"
1893 webp_decoder_select="vp8_decoder"
1894 wmapro_decoder_select="mdct sinewin"
1895 wmav1_decoder_select="mdct sinewin"
1896 wmav1_encoder_select="mdct sinewin"
1897 wmav2_decoder_select="mdct sinewin"
1898 wmav2_encoder_select="mdct sinewin"
1899 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1900 wmv1_decoder_select="h263_decoder"
1901 wmv1_encoder_select="h263_encoder"
1902 wmv2_decoder_select="h263_decoder videodsp"
1903 wmv2_encoder_select="h263_encoder"
1904 wmv3_decoder_select="vc1_decoder"
1905 wmv3image_decoder_select="wmv3_decoder"
1906 zerocodec_decoder_select="zlib"
1907 zlib_decoder_select="zlib"
1908 zlib_encoder_select="zlib"
1909 zmbv_decoder_select="zlib"
1910 zmbv_encoder_select="zlib"
1911
1912 # hardware accelerators
1913 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1914 dxva2_deps="dxva2api_h"
1915 vaapi_deps="va_va_h"
1916 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1917 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1918 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1919
1920 h263_vaapi_hwaccel_deps="vaapi"
1921 h263_vaapi_hwaccel_select="h263_decoder"
1922 h263_vdpau_hwaccel_deps="vdpau"
1923 h263_vdpau_hwaccel_select="h263_decoder"
1924 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1925 h264_dxva2_hwaccel_deps="dxva2"
1926 h264_dxva2_hwaccel_select="h264_decoder"
1927 h264_vaapi_hwaccel_deps="vaapi"
1928 h264_vaapi_hwaccel_select="h264_decoder"
1929 h264_vda_decoder_deps="vda"
1930 h264_vda_decoder_select="h264_decoder"
1931 h264_vda_hwaccel_deps="vda"
1932 h264_vda_hwaccel_select="h264_decoder"
1933 h264_vdpau_decoder_deps="vdpau"
1934 h264_vdpau_decoder_select="h264_decoder"
1935 h264_vdpau_hwaccel_deps="vdpau"
1936 h264_vdpau_hwaccel_select="h264_decoder"
1937 mpeg_vdpau_decoder_deps="vdpau"
1938 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1939 mpeg1_vdpau_decoder_deps="vdpau"
1940 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1941 mpeg1_vdpau_hwaccel_deps="vdpau"
1942 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1943 mpeg2_crystalhd_decoder_select="crystalhd"
1944 mpeg2_dxva2_hwaccel_deps="dxva2"
1945 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1946 mpeg2_vaapi_hwaccel_deps="vaapi"
1947 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1948 mpeg2_vdpau_hwaccel_deps="vdpau"
1949 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1950 mpeg4_crystalhd_decoder_select="crystalhd"
1951 mpeg4_vaapi_hwaccel_deps="vaapi"
1952 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1953 mpeg4_vdpau_decoder_deps="vdpau"
1954 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1955 mpeg4_vdpau_hwaccel_deps="vdpau"
1956 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1957 msmpeg4_crystalhd_decoder_select="crystalhd"
1958 vc1_crystalhd_decoder_select="crystalhd"
1959 vc1_dxva2_hwaccel_deps="dxva2"
1960 vc1_dxva2_hwaccel_select="vc1_decoder"
1961 vc1_vaapi_hwaccel_deps="vaapi"
1962 vc1_vaapi_hwaccel_select="vc1_decoder"
1963 vc1_vdpau_decoder_deps="vdpau"
1964 vc1_vdpau_decoder_select="vc1_decoder"
1965 vc1_vdpau_hwaccel_deps="vdpau"
1966 vc1_vdpau_hwaccel_select="vc1_decoder"
1967 wmv3_crystalhd_decoder_select="crystalhd"
1968 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1969 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1970 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1971 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1972
1973 # parsers
1974 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1975 mpeg4video_parser_select="error_resilience mpegvideo"
1976 mpegvideo_parser_select="error_resilience mpegvideo"
1977 vc1_parser_select="mpegvideo"
1978
1979 # external libraries
1980 libaacplus_encoder_deps="libaacplus"
1981 libcelt_decoder_deps="libcelt"
1982 libfaac_encoder_deps="libfaac"
1983 libfaac_encoder_select="audio_frame_queue"
1984 libfdk_aac_encoder_deps="libfdk_aac"
1985 libfdk_aac_encoder_select="audio_frame_queue"
1986 libgme_demuxer_deps="libgme"
1987 libgsm_decoder_deps="libgsm"
1988 libgsm_encoder_deps="libgsm"
1989 libgsm_ms_decoder_deps="libgsm"
1990 libgsm_ms_encoder_deps="libgsm"
1991 libilbc_decoder_deps="libilbc"
1992 libilbc_encoder_deps="libilbc"
1993 libmodplug_demuxer_deps="libmodplug"
1994 libmp3lame_encoder_deps="libmp3lame"
1995 libmp3lame_encoder_select="audio_frame_queue"
1996 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1997 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1998 libopencore_amrnb_encoder_select="audio_frame_queue"
1999 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2000 libopenjpeg_decoder_deps="libopenjpeg"
2001 libopenjpeg_encoder_deps="libopenjpeg"
2002 libopus_decoder_deps="libopus"
2003 libopus_encoder_deps="libopus"
2004 libopus_encoder_select="audio_frame_queue"
2005 libquvi_demuxer_deps="libquvi"
2006 libschroedinger_decoder_deps="libschroedinger"
2007 libschroedinger_encoder_deps="libschroedinger"
2008 libshine_encoder_deps="libshine"
2009 libshine_encoder_select="audio_frame_queue"
2010 libspeex_decoder_deps="libspeex"
2011 libspeex_encoder_deps="libspeex"
2012 libspeex_encoder_select="audio_frame_queue"
2013 libstagefright_h264_decoder_deps="libstagefright_h264"
2014 libtheora_encoder_deps="libtheora"
2015 libtwolame_encoder_deps="libtwolame"
2016 libvo_aacenc_encoder_deps="libvo_aacenc"
2017 libvo_aacenc_encoder_select="audio_frame_queue"
2018 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2019 libvorbis_decoder_deps="libvorbis"
2020 libvorbis_encoder_deps="libvorbis"
2021 libvorbis_encoder_select="audio_frame_queue"
2022 libvpx_vp8_decoder_deps="libvpx"
2023 libvpx_vp8_encoder_deps="libvpx"
2024 libvpx_vp9_decoder_deps="libvpx"
2025 libvpx_vp9_encoder_deps="libvpx"
2026 libwavpack_encoder_deps="libwavpack"
2027 libx264_encoder_deps="libx264"
2028 libx264rgb_encoder_deps="libx264"
2029 libxavs_encoder_deps="libxavs"
2030 libxvid_encoder_deps="libxvid"
2031 libutvideo_decoder_deps="libutvideo"
2032 libutvideo_encoder_deps="libutvideo"
2033
2034 # demuxers / muxers
2035 ac3_demuxer_select="ac3_parser"
2036 asf_stream_muxer_select="asf_muxer"
2037 avisynth_demuxer_deps="avisynth"
2038 dirac_demuxer_select="dirac_parser"
2039 dts_demuxer_select="dca_parser"
2040 dtshd_demuxer_select="dca_parser"
2041 eac3_demuxer_select="ac3_parser"
2042 f4v_muxer_select="mov_muxer"
2043 flac_demuxer_select="flac_parser"
2044 ipod_muxer_select="mov_muxer"
2045 ismv_muxer_select="mov_muxer"
2046 libnut_demuxer_deps="libnut"
2047 libnut_muxer_deps="libnut"
2048 matroska_audio_muxer_select="matroska_muxer"
2049 matroska_demuxer_suggest="bzlib lzo zlib"
2050 mov_demuxer_suggest="zlib"
2051 mov_muxer_select="rtpenc_chain"
2052 mp3_demuxer_select="mpegaudio_parser"
2053 mp4_muxer_select="mov_muxer"
2054 mpegts_muxer_select="adts_muxer latm_muxer"
2055 mpegtsraw_demuxer_select="mpegts_demuxer"
2056 mxf_d10_muxer_select="mxf_muxer"
2057 ogg_demuxer_select="golomb"
2058 psp_muxer_select="mov_muxer"
2059 rtp_demuxer_select="sdp_demuxer"
2060 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2061 rtsp_demuxer_select="http_protocol rtpdec"
2062 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2063 sap_demuxer_select="sdp_demuxer"
2064 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2065 sdp_demuxer_select="rtpdec"
2066 smoothstreaming_muxer_select="ismv_muxer"
2067 spdif_muxer_select="aac_parser"
2068 tak_demuxer_select="tak_parser"
2069 tg2_muxer_select="mov_muxer"
2070 tgp_muxer_select="mov_muxer"
2071 vobsub_demuxer_select="mpegps_demuxer"
2072 w64_demuxer_deps="wav_demuxer"
2073 w64_muxer_deps="wav_muxer"
2074
2075 # indevs / outdevs
2076 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2077 alsa_outdev_deps="alsa_asoundlib_h"
2078 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2079 caca_outdev_deps="libcaca"
2080 dshow_indev_deps="IBaseFilter"
2081 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2082 dv1394_indev_deps="dv1394 dv_demuxer"
2083 fbdev_indev_deps="linux_fb_h"
2084 iec61883_indev_deps="libiec61883"
2085 jack_indev_deps="jack_jack_h sem_timedwait"
2086 lavfi_indev_deps="avfilter"
2087 libcdio_indev_deps="libcdio"
2088 libdc1394_indev_deps="libdc1394"
2089 libv4l2_indev_deps="libv4l2"
2090 openal_indev_deps="openal"
2091 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2092 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2093 pulse_indev_deps="libpulse"
2094 sdl_outdev_deps="sdl"
2095 sndio_indev_deps="sndio_h"
2096 sndio_outdev_deps="sndio_h"
2097 v4l_indev_deps="linux_videodev_h"
2098 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2099 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2100 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2101 vfwcap_indev_extralibs="-lavicap32"
2102 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2103 xv_outdev_extralibs="-lXv -lX11 -lXext"
2104 x11grab_indev_deps="x11grab"
2105
2106 # protocols
2107 bluray_protocol_deps="libbluray"
2108 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2109 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2110 ffrtmpcrypt_protocol_select="tcp_protocol"
2111 ffrtmphttp_protocol_deps="!librtmp_protocol"
2112 ffrtmphttp_protocol_select="http_protocol"
2113 ftp_protocol_select="tcp_protocol"
2114 gopher_protocol_select="network"
2115 httpproxy_protocol_select="tcp_protocol"
2116 http_protocol_select="tcp_protocol"
2117 https_protocol_select="tls_protocol"
2118 librtmp_protocol_deps="librtmp"
2119 librtmpe_protocol_deps="librtmp"
2120 librtmps_protocol_deps="librtmp"
2121 librtmpt_protocol_deps="librtmp"
2122 librtmpte_protocol_deps="librtmp"
2123 mmsh_protocol_select="http_protocol"
2124 mmst_protocol_select="network"
2125 rtmp_protocol_deps="!librtmp_protocol"
2126 rtmp_protocol_select="tcp_protocol"
2127 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2128 rtmps_protocol_deps="!librtmp_protocol"
2129 rtmps_protocol_select="tls_protocol"
2130 rtmpt_protocol_select="ffrtmphttp_protocol"
2131 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2132 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2133 rtp_protocol_select="udp_protocol"
2134 sctp_protocol_deps="struct_sctp_event_subscribe"
2135 sctp_protocol_select="network"
2136 srtp_protocol_select="rtp_protocol"
2137 tcp_protocol_select="network"
2138 tls_protocol_deps_any="openssl gnutls"
2139 tls_protocol_select="tcp_protocol"
2140 udp_protocol_select="network"
2141
2142 # filters
2143 aconvert_filter_deps="swresample"
2144 amovie_filter_deps="avcodec avformat"
2145 aresample_filter_deps="swresample"
2146 ass_filter_deps="libass"
2147 asyncts_filter_deps="avresample"
2148 atempo_filter_deps="avcodec rdft"
2149 azmq_filter_deps="libzmq"
2150 blackframe_filter_deps="gpl"
2151 boxblur_filter_deps="gpl"
2152 colormatrix_filter_deps="gpl"
2153 cropdetect_filter_deps="gpl"
2154 dctdnoiz_filter_deps="avcodec fft"
2155 delogo_filter_deps="gpl"
2156 deshake_filter_deps="avcodec"
2157 deshake_filter_select="dsputil"
2158 drawtext_filter_deps="libfreetype"
2159 ebur128_filter_deps="gpl"
2160 flite_filter_deps="libflite"
2161 frei0r_filter_deps="frei0r dlopen"
2162 frei0r_filter_extralibs='$ldl'
2163 frei0r_src_filter_deps="frei0r dlopen"
2164 frei0r_src_filter_extralibs='$ldl'
2165 geq_filter_deps="gpl"
2166 histeq_filter_deps="gpl"
2167 hqdn3d_filter_deps="gpl"
2168 hue_filter_deps="gpl"
2169 interlace_filter_deps="gpl"
2170 kerndeint_filter_deps="gpl"
2171 mcdeint_filter_deps="avcodec gpl"
2172 movie_filter_deps="avcodec avformat"
2173 mp_filter_deps="gpl avcodec swscale inline_asm"
2174 mpdecimate_filter_deps="gpl avcodec"
2175 mptestsrc_filter_deps="gpl"
2176 negate_filter_deps="lut_filter"
2177 noise_filter_deps="gpl"
2178 perspective_filter_deps="gpl"
2179 resample_filter_deps="avresample"
2180 ocv_filter_deps="libopencv"
2181 owdenoise_filter_deps="gpl"
2182 pan_filter_deps="swresample"
2183 pp_filter_deps="gpl postproc"
2184 removelogo_filter_deps="avcodec avformat swscale"
2185 sab_filter_deps="gpl swscale"
2186 scale_filter_deps="swscale"
2187 smartblur_filter_deps="gpl swscale"
2188 showspectrum_filter_deps="avcodec rdft"
2189 spp_filter_deps="gpl avcodec fft"
2190 stereo3d_filter_deps="gpl"
2191 subtitles_filter_deps="avformat avcodec libass"
2192 super2xsai_filter_deps="gpl"
2193 tinterlace_filter_deps="gpl"
2194 vidstabdetect_filter_deps="libvidstab"
2195 vidstabtransform_filter_deps="libvidstab"
2196 yadif_filter_deps="gpl"
2197 pixfmts_super2xsai_test_deps="super2xsai_filter"
2198 tinterlace_merge_test_deps="tinterlace_filter"
2199 tinterlace_pad_test_deps="tinterlace_filter"
2200 zmq_filter_deps="libzmq"
2201
2202 # libraries
2203 avcodec_deps="avutil"
2204 avdevice_deps="avutil avcodec avformat"
2205 avfilter_deps="avutil"
2206 avformat_deps="avutil avcodec"
2207 avresample_deps="avutil"
2208 postproc_deps="avutil gpl"
2209 swscale_deps="avutil"
2210
2211 # programs
2212 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2213 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2214                null_filter
2215                setpts_filter trim_filter"
2216 ffplay_deps="avcodec avformat swscale swresample sdl"
2217 ffplay_select="rdft crop_filter"
2218 ffprobe_deps="avcodec avformat"
2219 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer sarestart"
2220 ffserver_extralibs='$ldl'
2221
2222 # documentation
2223 podpages_deps="perl"
2224 manpages_deps="perl pod2man"
2225 htmlpages_deps="texi2html"
2226 txtpages_deps="makeinfo"
2227 doc_deps_any="manpages htmlpages podpages txtpages"
2228
2229 # default parameters
2230
2231 logfile="config.log"
2232
2233 # installation paths
2234 prefix_default="/usr/local"
2235 bindir_default='${prefix}/bin'
2236 datadir_default='${prefix}/share/ffmpeg'
2237 incdir_default='${prefix}/include'
2238 libdir_default='${prefix}/lib'
2239 mandir_default='${prefix}/share/man'
2240 shlibdir_default="$libdir_default"
2241
2242 # toolchain
2243 ar_default="ar"
2244 cc_default="gcc"
2245 cxx_default="g++"
2246 host_cc_default="gcc"
2247 cp_f="cp -f"
2248 install="install"
2249 ln_s="ln -s -f"
2250 nm_default="nm -g"
2251 objformat="elf"
2252 pkg_config_default=pkg-config
2253 ranlib="ranlib"
2254 strip_default="strip"
2255 yasmexe_default="yasm"
2256
2257 nogas=":"
2258
2259 # machine
2260 arch_default=$(uname -m)
2261 cpu="generic"
2262
2263 # OS
2264 target_os_default=$(tolower $(uname -s))
2265 host_os=$target_os_default
2266
2267 # configurable options
2268 enable $PROGRAM_LIST
2269 enable $DOCUMENT_LIST
2270 enable $(filter_out avresample $LIBRARY_LIST)
2271 enable stripping
2272
2273 enable asm
2274 enable debug
2275 enable doc
2276 enable optimizations
2277 enable runtime_cpudetect
2278 enable safe_bitstream_reader
2279 enable static
2280 enable swscale_alpha
2281
2282 # Enable hwaccels by default.
2283 enable dxva2 vaapi vdpau
2284
2285 # build settings
2286 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2287 LIBPREF="lib"
2288 LIBSUF=".a"
2289 FULLNAME='$(NAME)$(BUILDSUF)'
2290 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2291 SLIBPREF="lib"
2292 SLIBSUF=".so"
2293 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2294 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2295 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2296 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2297 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2298 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2299
2300 asflags_filter=echo
2301 cflags_filter=echo
2302 ldflags_filter=echo
2303
2304 AS_C='-c'
2305 AS_O='-o $@'
2306 CC_C='-c'
2307 CC_E='-E -o $@'
2308 CC_O='-o $@'
2309 CXX_C='-c'
2310 CXX_O='-o $@'
2311 LD_O='-o $@'
2312 LD_LIB='-l%'
2313 LD_PATH='-L'
2314 HOSTCC_C='-c'
2315 HOSTCC_O='-o $@'
2316 HOSTLD_O='-o $@'
2317
2318 host_cflags='-O3 -g'
2319 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2320 host_libs='-lm'
2321 host_cflags_filter=echo
2322 host_ldflags_filter=echo
2323
2324 target_path='$(CURDIR)'
2325
2326 # since the object filename is not given with the -MM flag, the compiler
2327 # is only able to print the basename, and we must add the path ourselves
2328 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2329 DEPFLAGS='-MM'
2330
2331 # find source path
2332 if test -f configure; then
2333     source_path=.
2334 else
2335     source_path=$(cd $(dirname "$0"); pwd)
2336     echo "$source_path" | grep -q '[[:blank:]]' &&
2337         die "Out of tree builds are impossible with whitespace in source path."
2338     test -e "$source_path/config.h" &&
2339         die "Out of tree builds are impossible with config.h in source dir."
2340 fi
2341
2342 for v in "$@"; do
2343     r=${v#*=}
2344     l=${v%"$r"}
2345     r=$(sh_quote "$r")
2346     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2347 done
2348
2349 find_things(){
2350     thing=$1
2351     pattern=$2
2352     file=$source_path/$3
2353     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2354 }
2355
2356 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2357 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2358 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2359 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2360 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2361 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2362 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2363 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2364 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2365 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2366 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2367
2368 ALL_COMPONENTS="
2369     $BSF_LIST
2370     $DECODER_LIST
2371     $DEMUXER_LIST
2372     $ENCODER_LIST
2373     $FILTER_LIST
2374     $HWACCEL_LIST
2375     $INDEV_LIST
2376     $MUXER_LIST
2377     $OUTDEV_LIST
2378     $PARSER_LIST
2379     $PROTOCOL_LIST
2380 "
2381
2382 for n in $COMPONENT_LIST; do
2383     v=$(toupper ${n%s})_LIST
2384     eval enable \$$v
2385     eval ${n}_if_any="\$$v"
2386 done
2387
2388 enable $ARCH_EXT_LIST
2389
2390 die_unknown(){
2391     echo "Unknown option \"$1\"."
2392     echo "See $0 --help for available options."
2393     exit 1
2394 }
2395
2396 print_3_columns() {
2397     cat | tr ' ' '\n' | sort | pr -r -3 -t
2398 }
2399
2400 show_list() {
2401     suffix=_$1
2402     shift
2403     echo $* | sed s/$suffix//g | print_3_columns
2404     exit 0
2405 }
2406
2407 rand_list(){
2408     IFS=', '
2409     set -- $*
2410     unset IFS
2411     for thing; do
2412         comp=${thing%:*}
2413         prob=${thing#$comp}
2414         prob=${prob#:}
2415         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2416         echo "prob ${prob:-0.5}"
2417         printf '%s\n' $comp
2418     done
2419 }
2420
2421 do_random(){
2422     action=$1
2423     shift
2424     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2425     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2426 }
2427
2428 for opt do
2429     optval="${opt#*=}"
2430     case "$opt" in
2431         --extra-ldflags=*)
2432             add_ldflags $optval
2433         ;;
2434         --extra-libs=*)
2435             add_extralibs $optval
2436         ;;
2437         --disable-devices)
2438             disable $INDEV_LIST $OUTDEV_LIST
2439         ;;
2440         --enable-debug=*)
2441             debuglevel="$optval"
2442         ;;
2443         --disable-programs)
2444             disable $PROGRAM_LIST
2445         ;;
2446         --disable-everything)
2447             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2448         ;;
2449         --disable-all)
2450             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2451             disable $LIBRARY_LIST $PROGRAM_LIST doc
2452         ;;
2453         --enable-random|--disable-random)
2454             action=${opt%%-random}
2455             do_random ${action#--} $COMPONENT_LIST
2456         ;;
2457         --enable-random=*|--disable-random=*)
2458             action=${opt%%-random=*}
2459             do_random ${action#--} $optval
2460         ;;
2461         --enable-*=*|--disable-*=*)
2462             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2463             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2464             eval list=\$$(toupper $thing)_LIST
2465             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2466             list=$(filter "$name" $list)
2467             [ "$list" = "" ] && warn "Option $opt did not match anything"
2468             $action $list
2469         ;;
2470         --enable-?*|--disable-?*)
2471             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2472             if is_in $option $COMPONENT_LIST; then
2473                 test $action = disable && action=unset
2474                 eval $action \$$(toupper ${option%s})_LIST
2475             elif is_in $option $CMDLINE_SELECT; then
2476                 $action $option
2477             else
2478                 die_unknown $opt
2479             fi
2480         ;;
2481         --list-*)
2482             NAME="${opt#--list-}"
2483             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2484             NAME=${NAME%s}
2485             eval show_list $NAME \$$(toupper $NAME)_LIST
2486         ;;
2487         --help|-h) show_help
2488         ;;
2489         --fatal-warnings) enable fatal_warnings
2490         ;;
2491         *)
2492             optname="${opt%%=*}"
2493             optname="${optname#--}"
2494             optname=$(echo "$optname" | sed 's/-/_/g')
2495             if is_in $optname $CMDLINE_SET; then
2496                 eval $optname='$optval'
2497             elif is_in $optname $CMDLINE_APPEND; then
2498                 append $optname "$optval"
2499             else
2500                 die_unknown $opt
2501             fi
2502         ;;
2503     esac
2504 done
2505
2506 disabled logging && logfile=/dev/null
2507
2508 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2509 set >> $logfile
2510
2511 test -n "$cross_prefix" && enable cross_compile
2512
2513 if enabled cross_compile; then
2514     test -n "$arch" && test -n "$target_os" ||
2515         die "Must specify target arch and OS when cross-compiling"
2516 fi
2517
2518 ar_default="${cross_prefix}${ar_default}"
2519 cc_default="${cross_prefix}${cc_default}"
2520 cxx_default="${cross_prefix}${cxx_default}"
2521 nm_default="${cross_prefix}${nm_default}"
2522 pkg_config_default="${cross_prefix}${pkg_config_default}"
2523 ranlib="${cross_prefix}${ranlib}"
2524 strip_default="${cross_prefix}${strip_default}"
2525
2526 sysinclude_default="${sysroot}/usr/include"
2527
2528 test -n "$valgrind" && toolchain="valgrind-memcheck"
2529
2530 case "$toolchain" in
2531     clang-asan)
2532         cc_default="clang"
2533         add_cflags  -fsanitize=address
2534         add_ldflags -fsanitize=address
2535     ;;
2536     clang-tsan)
2537         cc_default="clang"
2538         add_cflags  -fsanitize=thread -pie
2539         add_ldflags -fsanitize=thread -pie
2540     ;;
2541     gcc-asan)
2542         cc_default="gcc"
2543         add_cflags  -fsanitize=address
2544         add_ldflags -fsanitize=address
2545     ;;
2546     gcc-tsan)
2547         cc_default="gcc"
2548         add_cflags  -fsanitize=thread -pie -fPIC
2549         add_ldflags -fsanitize=thread -pie -fPIC
2550     ;;
2551     valgrind-massif)
2552         target_exec_default=${valgrind:-"valgrind"}
2553         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"
2554     ;;
2555     valgrind-memcheck)
2556         target_exec_default=${valgrind:-"valgrind"}
2557         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2558     ;;
2559     msvc)
2560         cc_default="c99wrap cl"
2561         ld_default="c99wrap link"
2562         nm_default="dumpbin -symbols"
2563         ar_default="lib"
2564         target_os_default="win32"
2565     ;;
2566     icl)
2567         cc_default="c99wrap -noconv icl"
2568         ld_default="c99wrap xilink"
2569         nm_default="dumpbin -symbols"
2570         ar_default="xilib"
2571         target_os_default="win32"
2572     ;;
2573     gcov)
2574         add_cflags  -fprofile-arcs -ftest-coverage
2575         add_ldflags -fprofile-arcs -ftest-coverage
2576     ;;
2577     ?*)
2578         die "Unknown toolchain $toolchain"
2579     ;;
2580 esac
2581
2582 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2583 enabled cross_compile || host_cc_default=$cc
2584 set_default host_cc
2585
2586 if ! $pkg_config --version >/dev/null 2>&1; then
2587     warn "$pkg_config not found, library detection may fail."
2588     pkg_config=false
2589 fi
2590
2591 exesuf() {
2592     case $1 in
2593         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2594     esac
2595 }
2596
2597 EXESUF=$(exesuf $target_os)
2598 HOSTEXESUF=$(exesuf $host_os)
2599
2600 # set temporary file name
2601 : ${TMPDIR:=$TEMPDIR}
2602 : ${TMPDIR:=$TMP}
2603 : ${TMPDIR:=/tmp}
2604
2605 if ! check_cmd mktemp -u XXXXXX; then
2606     # simple replacement for missing mktemp
2607     # NOT SAFE FOR GENERAL USE
2608     mktemp(){
2609         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2610     }
2611 fi
2612
2613 tmpfile(){
2614     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2615         (set -C; exec > $tmp) 2>/dev/null ||
2616         die "Unable to create temporary file in $TMPDIR."
2617     append TMPFILES $tmp
2618     eval $1=$tmp
2619 }
2620
2621 trap 'rm -f -- $TMPFILES' EXIT
2622
2623 tmpfile TMPASM .asm
2624 tmpfile TMPC   .c
2625 tmpfile TMPCPP .cpp
2626 tmpfile TMPE   $EXESUF
2627 tmpfile TMPH   .h
2628 tmpfile TMPO   .o
2629 tmpfile TMPS   .S
2630 tmpfile TMPSH  .sh
2631 tmpfile TMPV   .ver
2632
2633 unset -f mktemp
2634
2635 chmod +x $TMPE
2636
2637 # make sure we can execute files in $TMPDIR
2638 cat > $TMPSH 2>> $logfile <<EOF
2639 #! /bin/sh
2640 EOF
2641 chmod +x $TMPSH >> $logfile 2>&1
2642 if ! $TMPSH >> $logfile 2>&1; then
2643     cat <<EOF
2644 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2645 variable to another directory and make sure that it is not mounted noexec.
2646 EOF
2647     die "Sanity test failed."
2648 fi
2649
2650 ccc_flags(){
2651     for flag; do
2652         case $flag in
2653             -std=c99)           echo -c99                       ;;
2654             -mcpu=*)            echo -arch ${flag#*=}           ;;
2655             -mieee)             echo -ieee                      ;;
2656             -O*|-fast)          echo $flag                      ;;
2657             -fno-math-errno)    echo -assume nomath_errno       ;;
2658             -g)                 echo -g3                        ;;
2659             -Wall)              echo -msg_enable level2         ;;
2660             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2661             -Wl,*)              echo $flag                      ;;
2662             -f*|-W*)                                            ;;
2663             *)                  echo $flag                      ;;
2664         esac
2665    done
2666 }
2667
2668 msvc_common_flags(){
2669     for flag; do
2670         case $flag in
2671             # In addition to specifying certain flags under the compiler
2672             # specific filters, they must be specified here as well or else the
2673             # generic catch all at the bottom will print the original flag.
2674             -Wall)                ;;
2675             -std=c99)             ;;
2676             # Common flags
2677             -fomit-frame-pointer) ;;
2678             -g)                   echo -Z7 ;;
2679             -fno-math-errno)      ;;
2680             -fno-common)          ;;
2681             -fno-signed-zeros)    ;;
2682             -fPIC)                ;;
2683             -mthumb)              ;;
2684             -march=*)             ;;
2685             -lz)                  echo zlib.lib ;;
2686             -lavifil32)           echo vfw32.lib ;;
2687             -lavicap32)           echo vfw32.lib user32.lib ;;
2688             -l*)                  echo ${flag#-l}.lib ;;
2689             *)                    echo $flag ;;
2690         esac
2691     done
2692 }
2693
2694 msvc_flags(){
2695     msvc_common_flags "$@"
2696     for flag; do
2697         case $flag in
2698             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2699                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2700                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2701                                        -wd4554 \
2702                                        -wd4996 -wd4273 ;;
2703         esac
2704     done
2705 }
2706
2707 icl_flags(){
2708     msvc_common_flags "$@"
2709     for flag; do
2710         case $flag in
2711             # Despite what Intel's documentation says -Wall, which is supported
2712             # on Windows, does enable remarks so disable them here.
2713             -Wall)                echo $flag -Qdiag-disable:remark ;;
2714             -std=c99)             echo -Qstd=c99 ;;
2715         esac
2716     done
2717 }
2718
2719 pgi_flags(){
2720     for flag; do
2721         case $flag in
2722             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2723             -fomit-frame-pointer) echo -Mnoframe ;;
2724             -g)                   echo -gopt ;;
2725             *)                    echo $flag ;;
2726         esac
2727     done
2728 }
2729
2730 suncc_flags(){
2731     for flag; do
2732         case $flag in
2733             -march=*|-mcpu=*)
2734                 case "${flag#*=}" in
2735                     native)                   echo -xtarget=native       ;;
2736                     v9|niagara)               echo -xarch=sparc          ;;
2737                     ultrasparc)               echo -xarch=sparcvis       ;;
2738                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2739                     i586|pentium)             echo -xchip=pentium        ;;
2740                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2741                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2742                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2743                     pentium4*)          echo -xtarget=pentium4           ;;
2744                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2745                     *-sse3)             echo -xarch=sse3                 ;;
2746                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2747                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2748                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2749                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2750                     bdver*)                    echo -xarch=avx           ;;
2751                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2752                     k8|opteron|athlon64|athlon-fx)
2753                                                echo -xarch=sse2a         ;;
2754                     athlon*)                   echo -xarch=pentium_proa  ;;
2755                 esac
2756                 ;;
2757             -std=c99)             echo -xc99              ;;
2758             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2759             -fPIC)                echo -KPIC -xcode=pic32 ;;
2760             -W*,*)                echo $flag              ;;
2761             -f*-*|-W*|-mimpure-text)                      ;;
2762             -shared)              echo -G                 ;;
2763             *)                    echo $flag              ;;
2764         esac
2765     done
2766 }
2767
2768 tms470_flags(){
2769     for flag; do
2770         case $flag in
2771             -march=*|-mcpu=*)
2772                 case "${flag#*=}" in
2773                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2774                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2775                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2776                     armv6*|arm11*)          echo -mv=6   ;;
2777                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2778                                             echo -mv=5e  ;;
2779                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2780                 esac
2781                 ;;
2782             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2783             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2784             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2785             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2786             -msoft-float)   echo --float_support=vfplib       ;;
2787             -O[0-3]|-mf=*)  echo $flag                        ;;
2788             -g)             echo -g -mn                       ;;
2789             -pds=*)         echo $flag                        ;;
2790             -D*|-I*)        echo $flag                        ;;
2791             --gcc|--abi=*)  echo $flag                        ;;
2792             -me)            echo $flag                        ;;
2793         esac
2794     done
2795 }
2796
2797 probe_cc(){
2798     pfx=$1
2799     _cc=$2
2800
2801     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2802     unset _ld_o _ldflags _ld_lib _ld_path
2803     unset _depflags _DEPCMD _DEPFLAGS
2804     _flags_filter=echo
2805
2806     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2807         _type=llvm_gcc
2808         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2809         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2810         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2811         _cflags_speed='-O3'
2812         _cflags_size='-Os'
2813     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2814         _type=gcc
2815         gcc_version=$($_cc --version | head -n1)
2816         gcc_basever=$($_cc -dumpversion)
2817         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2818         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2819         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2820         if ! $_cc -dumpversion | grep -q '^2\.'; then
2821             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2822         fi
2823         _cflags_speed='-O3'
2824         _cflags_size='-Os'
2825     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2826         _type=icc
2827         _ident=$($_cc --version | head -n1)
2828         _depflags='-MMD'
2829         _cflags_speed='-O3'
2830         _cflags_size='-Os'
2831         _cflags_noopt='-O1'
2832     elif $_cc -v 2>&1 | grep -q xlc; then
2833         _type=xlc
2834         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2835         _cflags_speed='-O5'
2836         _cflags_size='-O5 -qcompact'
2837     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2838         _type=ccc
2839         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2840         _DEPFLAGS='-M'
2841         _cflags_speed='-fast'
2842         _cflags_size='-O1'
2843         _flags_filter=ccc_flags
2844     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2845         test -d "$sysroot" || die "No valid sysroot specified."
2846         _type=armcc
2847         _ident=$($_cc --vsn | head -n1)
2848         armcc_conf="$PWD/armcc.conf"
2849         $_cc --arm_linux_configure                 \
2850              --arm_linux_config_file="$armcc_conf" \
2851              --configure_sysroot="$sysroot"        \
2852              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2853              die "Error creating armcc configuration file."
2854         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2855         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2856         as_default="${cross_prefix}gcc"
2857         _depflags='-MMD'
2858         _cflags_speed='-O3'
2859         _cflags_size='-Os'
2860     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2861         _type=tms470
2862         _ident=$($_cc -version | head -n1 | tr -s ' ')
2863         _flags='--gcc --abi=eabi -me'
2864         _cc_e='-ppl -fe=$@'
2865         _cc_o='-fe=$@'
2866         _depflags='-ppa -ppd=$(@:.o=.d)'
2867         _cflags_speed='-O3 -mf=5'
2868         _cflags_size='-O3 -mf=2'
2869         _flags_filter=tms470_flags
2870     elif $_cc -v 2>&1 | grep -q clang; then
2871         _type=clang
2872         _ident=$($_cc --version | head -n1)
2873         _depflags='-MMD'
2874         _cflags_speed='-O3'
2875         _cflags_size='-Os'
2876     elif $_cc -V 2>&1 | grep -q Sun; then
2877         _type=suncc
2878         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2879         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2880         _DEPFLAGS='-xM1 -xc99'
2881         _ldflags='-std=c99'
2882         _cflags_speed='-O5'
2883         _cflags_size='-O5 -xspace'
2884         _flags_filter=suncc_flags
2885     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2886         _type=pathscale
2887         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2888         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2889         _cflags_speed='-O2'
2890         _cflags_size='-Os'
2891         _flags_filter='filter_out -Wdisabled-optimization'
2892     elif $_cc -v 2>&1 | grep -q Open64; then
2893         _type=open64
2894         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2895         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2896         _cflags_speed='-O2'
2897         _cflags_size='-Os'
2898         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2899     elif $_cc -V 2>&1 | grep -q Portland; then
2900         _type=pgi
2901         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2902         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2903         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2904         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2905         _cflags_noopt="-O"
2906         _flags_filter=pgi_flags
2907     elif $_cc 2>&1 | grep -q Microsoft; then
2908         _type=msvc
2909         _ident=$($cc 2>&1 | head -n1)
2910         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2911         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2912         _cflags_speed="-O2"
2913         _cflags_size="-O1"
2914         # Nonstandard output options, to avoid msys path conversion issues.
2915         # Relies on wrapper to remap it.
2916         if $_cc 2>&1 | grep -q Linker; then
2917             _ld_o='-out $@'
2918         else
2919             _ld_o='-Fe$@'
2920         fi
2921         _cc_o='-Fo $@'
2922         _cc_e='-P -Fi $@'
2923         _flags_filter=msvc_flags
2924         _ld_lib='lib%.a'
2925         _ld_path='-libpath:'
2926         _flags='-nologo'
2927         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2928         if [ $pfx = hostcc ]; then
2929             append _cflags -Dsnprintf=_snprintf
2930         fi
2931         disable stripping
2932     elif $_cc 2>&1 | grep -q Intel; then
2933         _type=icl
2934         _ident=$($cc 2>&1 | head -n1)
2935         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2936         # Not only is O3 broken on 13.x+ but it is slower on all previous
2937         # versions (tested) as well.
2938         _cflags_speed="-O2"
2939         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2940         # Nonstandard output options, to avoid msys path conversion issues.
2941         # Relies on wrapper to remap it.
2942         if $_cc 2>&1 | grep -q Linker; then
2943             _ld_o='-out $@'
2944         else
2945             _ld_o='-Fe$@'
2946         fi
2947         _cc_o='-Fo $@'
2948         _cc_e='-P'
2949         _flags_filter=icl_flags
2950         _ld_lib='lib%.a'
2951         _ld_path='-libpath:'
2952         # -Qdiag-error to make icl error when seeing certain unknown arguments
2953         _flags='-nologo -Qdiag-error:4044,10157'
2954         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2955         # with MSVC which enables it by default.
2956         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2957         if [ $pfx = hostcc ]; then
2958             append _cflags -Dsnprintf=_snprintf
2959         fi
2960     fi
2961
2962     eval ${pfx}_type=\$_type
2963     eval ${pfx}_ident=\$_ident
2964 }
2965
2966 set_ccvars(){
2967     eval ${1}_C=\${_cc_c-\${${1}_C}}
2968     eval ${1}_E=\${_cc_e-\${${1}_E}}
2969     eval ${1}_O=\${_cc_o-\${${1}_O}}
2970
2971     if [ -n "$_depflags" ]; then
2972         eval ${1}_DEPFLAGS=\$_depflags
2973     else
2974         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2975         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2976         eval DEP${1}FLAGS=\$_flags
2977     fi
2978 }
2979
2980 probe_cc cc "$cc"
2981 cflags_filter=$_flags_filter
2982 cflags_speed=$_cflags_speed
2983 cflags_size=$_cflags_size
2984 cflags_noopt=$_cflags_noopt
2985 add_cflags $_flags $_cflags
2986 cc_ldflags=$_ldflags
2987 set_ccvars CC
2988
2989 probe_cc hostcc "$host_cc"
2990 host_cflags_filter=$_flags_filter
2991 add_host_cflags  $_flags $_cflags
2992 set_ccvars HOSTCC
2993
2994 test -n "$cc_type" && enable $cc_type ||
2995     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2996
2997 : ${as_default:=$cc}
2998 : ${dep_cc_default:=$cc}
2999 : ${ld_default:=$cc}
3000 : ${host_ld_default:=$host_cc}
3001 set_default ar as dep_cc ld host_ld
3002
3003 probe_cc as "$as"
3004 asflags_filter=$_flags_filter
3005 add_asflags $_flags $_cflags
3006 set_ccvars AS
3007
3008 probe_cc ld "$ld"
3009 ldflags_filter=$_flags_filter
3010 add_ldflags $_flags $_ldflags
3011 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3012 LD_O=${_ld_o-$LD_O}
3013 LD_LIB=${_ld_lib-$LD_LIB}
3014 LD_PATH=${_ld_path-$LD_PATH}
3015
3016 probe_cc hostld "$host_ld"
3017 host_ldflags_filter=$_flags_filter
3018 add_host_ldflags $_flags $_ldflags
3019 HOSTLD_O=${_ld_o-$HOSTLD_O}
3020
3021 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3022     probe_cc depcc "$dep_cc"
3023     CCDEP=${_DEPCMD:-$DEPCMD}
3024     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3025     DEPCCFLAGS=$_flags
3026 fi
3027
3028 if $ar 2>&1 | grep -q Microsoft; then
3029     arflags="-nologo"
3030     ar_o='-out:$@'
3031 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3032     arflags="rq"
3033     ar_o='$@'
3034 else
3035     arflags="rc"
3036     ar_o='$@'
3037 fi
3038
3039 add_cflags $extra_cflags
3040 add_cxxflags $extra_cxxflags
3041 add_asflags $extra_cflags
3042
3043 if test -n "$sysroot"; then
3044     case "$cc_type" in
3045         gcc|llvm_gcc|clang)
3046             add_cppflags --sysroot="$sysroot"
3047             add_ldflags --sysroot="$sysroot"
3048         ;;
3049         tms470)
3050             add_cppflags -I"$sysinclude"
3051             add_ldflags  --sysroot="$sysroot"
3052         ;;
3053     esac
3054 fi
3055
3056 if test "$cpu" = host; then
3057     enabled cross_compile &&
3058         die "--cpu=host makes no sense when cross-compiling."
3059
3060     case "$cc_type" in
3061         gcc|llvm_gcc)
3062             check_native(){
3063                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3064                 sed -n "/cc1.*$1=/{
3065                             s/.*$1=\\([^ ]*\\).*/\\1/
3066                             p
3067                             q
3068                         }" $TMPE
3069             }
3070             cpu=$(check_native -march || check_native -mcpu)
3071         ;;
3072     esac
3073
3074     test "${cpu:-host}" = host &&
3075         die "--cpu=host not supported with compiler $cc"
3076 fi
3077
3078 # Deal with common $arch aliases
3079 case "$arch" in
3080     aarch64|arm64)
3081         arch="aarch64"
3082     ;;
3083     arm*|iPad*|iPhone*)
3084         arch="arm"
3085     ;;
3086     mips*|IP*)
3087         arch="mips"
3088     ;;
3089     parisc*|hppa*)
3090         arch="parisc"
3091     ;;
3092     "Power Macintosh"|ppc*|powerpc*)
3093         arch="ppc"
3094     ;;
3095     s390|s390x)
3096         arch="s390"
3097     ;;
3098     sh4|sh)
3099         arch="sh4"
3100     ;;
3101     sun4u|sparc*)
3102         arch="sparc"
3103     ;;
3104     tilegx|tile-gx)
3105         arch="tilegx"
3106     ;;
3107     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3108         arch="x86"
3109     ;;
3110 esac
3111
3112 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3113 enable $arch
3114
3115 # Add processor-specific flags
3116 if enabled aarch64; then
3117
3118     case $cpu in
3119         armv*)
3120             cpuflags="-march=$cpu"
3121         ;;
3122         *)
3123             cpuflags="-mcpu=$cpu"
3124         ;;
3125     esac
3126
3127 elif enabled alpha; then
3128
3129     cpuflags="-mcpu=$cpu"
3130
3131 elif enabled arm; then
3132
3133     check_arm_arch() {
3134         check_cpp_condition stddef.h \
3135             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3136             $cpuflags
3137     }
3138
3139     probe_arm_arch() {
3140         if   check_arm_arch 4;        then echo armv4;
3141         elif check_arm_arch 4T;       then echo armv4t;
3142         elif check_arm_arch 5;        then echo armv5;
3143         elif check_arm_arch 5E;       then echo armv5e;
3144         elif check_arm_arch 5T;       then echo armv5t;
3145         elif check_arm_arch 5TE;      then echo armv5te;
3146         elif check_arm_arch 5TEJ;     then echo armv5te;
3147         elif check_arm_arch 6;        then echo armv6;
3148         elif check_arm_arch 6J;       then echo armv6j;
3149         elif check_arm_arch 6K;       then echo armv6k;
3150         elif check_arm_arch 6Z;       then echo armv6z;
3151         elif check_arm_arch 6ZK;      then echo armv6zk;
3152         elif check_arm_arch 6T2;      then echo armv6t2;
3153         elif check_arm_arch 7;        then echo armv7;
3154         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3155         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3156         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3157         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3158         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3159         fi
3160     }
3161
3162     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3163
3164     case $cpu in
3165         armv*)
3166             cpuflags="-march=$cpu"
3167             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3168         ;;
3169         *)
3170             cpuflags="-mcpu=$cpu"
3171             case $cpu in
3172                 cortex-a*)                               subarch=armv7a  ;;
3173                 cortex-r*)                               subarch=armv7r  ;;
3174                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3175                 arm11*)                                  subarch=armv6   ;;
3176                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3177                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3178                 *)                             subarch=$(probe_arm_arch) ;;
3179             esac
3180         ;;
3181     esac
3182
3183     case "$subarch" in
3184         armv5t*)    enable fast_clz                ;;
3185         armv[6-8]*) enable fast_clz fast_unaligned ;;
3186     esac
3187
3188 elif enabled avr32; then
3189
3190     case $cpu in
3191         ap7[02]0[0-2])
3192             subarch="avr32_ap"
3193             cpuflags="-mpart=$cpu"
3194         ;;
3195         ap)
3196             subarch="avr32_ap"
3197             cpuflags="-march=$cpu"
3198         ;;
3199         uc3[ab]*)
3200             subarch="avr32_uc"
3201             cpuflags="-mcpu=$cpu"
3202         ;;
3203         uc)
3204             subarch="avr32_uc"
3205             cpuflags="-march=$cpu"
3206         ;;
3207     esac
3208
3209 elif enabled bfin; then
3210
3211     cpuflags="-mcpu=$cpu"
3212
3213 elif enabled mips; then
3214
3215     cpuflags="-march=$cpu"
3216
3217     case $cpu in
3218         24kc)
3219             disable mipsfpu
3220             disable mipsdspr1
3221             disable mipsdspr2
3222         ;;
3223         24kf*)
3224             disable mipsdspr1
3225             disable mipsdspr2
3226         ;;
3227         24kec|34kc|1004kc)
3228             disable mipsfpu
3229             disable mipsdspr2
3230         ;;
3231         24kef*|34kf*|1004kf*)
3232             disable mipsdspr2
3233         ;;
3234         74kc)
3235             disable mipsfpu
3236         ;;
3237     esac
3238
3239 elif enabled ppc; then
3240
3241     case $(tolower $cpu) in
3242         601|ppc601|powerpc601)
3243             cpuflags="-mcpu=601"
3244             disable altivec
3245         ;;
3246         603*|ppc603*|powerpc603*)
3247             cpuflags="-mcpu=603"
3248             disable altivec
3249         ;;
3250         604*|ppc604*|powerpc604*)
3251             cpuflags="-mcpu=604"
3252             disable altivec
3253         ;;
3254         g3|75*|ppc75*|powerpc75*)
3255             cpuflags="-mcpu=750"
3256             disable altivec
3257         ;;
3258         g4|745*|ppc745*|powerpc745*)
3259             cpuflags="-mcpu=7450"
3260         ;;
3261         74*|ppc74*|powerpc74*)
3262             cpuflags="-mcpu=7400"
3263         ;;
3264         g5|970|ppc970|powerpc970)
3265             cpuflags="-mcpu=970"
3266         ;;
3267         power[3-7]*)
3268             cpuflags="-mcpu=$cpu"
3269         ;;
3270         cell)
3271             cpuflags="-mcpu=cell"
3272             enable ldbrx
3273         ;;
3274         e500mc)
3275             cpuflags="-mcpu=e500mc"
3276             disable altivec
3277         ;;
3278         e500v2)
3279             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3280             disable altivec
3281         ;;
3282         e500)
3283             cpuflags="-mcpu=8540 -mhard-float"
3284             disable altivec
3285         ;;
3286     esac
3287
3288 elif enabled sparc; then
3289
3290     case $cpu in
3291         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3292             cpuflags="-mcpu=$cpu"
3293             disable vis
3294         ;;
3295         ultrasparc*|niagara[234])
3296             cpuflags="-mcpu=$cpu"
3297         ;;
3298     esac
3299
3300 elif enabled x86; then
3301
3302     case $cpu in
3303         i[345]86|pentium)
3304             cpuflags="-march=$cpu"
3305             disable mmx
3306         ;;
3307         # targets that do NOT support nopl and conditional mov (cmov)
3308         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3309             cpuflags="-march=$cpu"
3310             disable i686
3311         ;;
3312         # targets that do support nopl and conditional mov (cmov)
3313         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3314             cpuflags="-march=$cpu"
3315             enable i686
3316             enable fast_cmov
3317         ;;
3318         # targets that do support conditional mov but on which it's slow
3319         pentium4|pentium4m|prescott|nocona)
3320             cpuflags="-march=$cpu"
3321             enable i686
3322             disable fast_cmov
3323         ;;
3324     esac
3325
3326 fi
3327
3328 if [ "$cpu" != generic ]; then
3329     add_cflags  $cpuflags
3330     add_asflags $cpuflags
3331 fi
3332
3333 # compiler sanity check
3334 check_exec <<EOF
3335 int main(void){ return 0; }
3336 EOF
3337 if test "$?" != 0; then
3338     echo "$cc is unable to create an executable file."
3339     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3340         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3341         echo "Only do this if you know what cross compiling means."
3342     fi
3343     die "C compiler test failed."
3344 fi
3345
3346 add_cppflags -D_ISOC99_SOURCE
3347 add_cxxflags -D__STDC_CONSTANT_MACROS
3348 check_cflags -std=c99
3349 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3350 #include <stdlib.h>
3351 EOF
3352 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3353 #include <stdlib.h>
3354 EOF
3355
3356 check_host_cflags -std=c99
3357 check_host_cflags -Wall
3358
3359 check_64bit(){
3360     arch32=$1
3361     arch64=$2
3362     expr=$3
3363     check_code cc "" "int test[2*($expr) - 1]" &&
3364         subarch=$arch64 || subarch=$arch32
3365 }
3366
3367 case "$arch" in
3368     aarch64|alpha|ia64)
3369         spic=$shared
3370     ;;
3371     mips)
3372         check_64bit mips mips64 '_MIPS_SIM > 1'
3373         spic=$shared
3374     ;;
3375     parisc)
3376         check_64bit parisc parisc64 'sizeof(void *) > 4'
3377         spic=$shared
3378     ;;
3379     ppc)
3380         check_64bit ppc ppc64 'sizeof(void *) > 4'
3381         spic=$shared
3382     ;;
3383     sparc)
3384         check_64bit sparc sparc64 'sizeof(void *) > 4'
3385         spic=$shared
3386     ;;
3387     x86)
3388         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3389         if test "$subarch" = "x86_64"; then
3390             spic=$shared
3391         fi
3392     ;;
3393     ppc)
3394         check_cc <<EOF && subarch="ppc64"
3395         int test[(int)sizeof(char*) - 7];
3396 EOF
3397     ;;
3398 esac
3399
3400 enable $subarch
3401 enabled spic && enable_weak pic
3402
3403 # OS specific
3404 case $target_os in
3405     aix)
3406         SHFLAGS=-shared
3407         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3408         enabled shared && add_ldflags -Wl,-brtl
3409         ar_default='ar -Xany'
3410         ;;
3411     haiku)
3412         prefix_default="/boot/common"
3413         network_extralibs="-lnetwork"
3414         host_libs=
3415         ;;
3416     sunos)
3417         SHFLAGS='-shared -Wl,-h,$$(@F)'
3418         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3419         network_extralibs="-lsocket -lnsl"
3420         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3421         # When using suncc to build, the Solaris linker will mark
3422         # an executable with each instruction set encountered by
3423         # the Solaris assembler.  As our libraries contain their own
3424         # guards for processor-specific code, instead suppress
3425         # generation of the HWCAPS ELF section on Solaris x86 only.
3426         enabled_all suncc x86 &&
3427             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3428             add_ldflags -Wl,-M,mapfile
3429         nm_default='nm -P -g'
3430         ;;
3431     netbsd)
3432         disable symver
3433         oss_indev_extralibs="-lossaudio"
3434         oss_outdev_extralibs="-lossaudio"
3435         enabled gcc || check_ldflags -Wl,-zmuldefs
3436         ;;
3437     openbsd|bitrig)
3438         disable symver
3439         SHFLAGS='-shared'
3440         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3441         SLIB_INSTALL_LINKS=
3442         oss_indev_extralibs="-lossaudio"
3443         oss_outdev_extralibs="-lossaudio"
3444         ;;
3445     dragonfly)
3446         disable symver
3447         ;;
3448     freebsd)
3449         ;;
3450     bsd/os)
3451         add_extralibs -lpoll -lgnugetopt
3452         strip="strip -d"
3453         ;;
3454     darwin)
3455         gas="gas-preprocessor.pl $cc"
3456         enabled ppc && add_asflags -force_cpusubtype_ALL
3457         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3458         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3459         strip="${strip} -x"
3460         add_ldflags -Wl,-dynamic,-search_paths_first
3461         SLIBSUF=".dylib"
3462         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3463         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3464         objformat="macho"
3465         enabled x86_64 && objformat="macho64"
3466         enabled_any pic shared ||
3467             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3468         ;;
3469     mingw32*)
3470         if test $target_os = "mingw32ce"; then
3471             disable network
3472         else
3473             target_os=mingw32
3474         fi
3475         LIBTARGET=i386
3476         if enabled x86_64; then
3477             LIBTARGET="i386:x86-64"
3478         elif enabled arm; then
3479             LIBTARGET=arm-wince
3480         fi
3481         check_ldflags -Wl,--nxcompat
3482         check_ldflags -Wl,--dynamicbase
3483         shlibdir_default="$bindir_default"
3484         SLIBPREF=""
3485         SLIBSUF=".dll"
3486         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3487         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3488         dlltool="${cross_prefix}dlltool"
3489         if check_cmd lib.exe -list; then
3490             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3491             if enabled x86_64; then
3492                 LIBTARGET=x64
3493             fi
3494         elif check_cmd $dlltool --version; then
3495             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3496         fi
3497         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3498         SLIB_INSTALL_LINKS=
3499         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3500         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3501         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3502         objformat="win32"
3503         ranlib=:
3504         enable dos_paths
3505         ;;
3506     win32|win64)
3507         if enabled shared; then
3508             # Link to the import library instead of the normal static library
3509             # for shared libs.
3510             LD_LIB='%.lib'
3511             # Cannot build shared and static libs at the same time with MSVC.
3512             disable static
3513         fi
3514         shlibdir_default="$bindir_default"
3515         SLIBPREF=""
3516         SLIBSUF=".dll"
3517         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3518         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3519         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3520         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3521         SLIB_INSTALL_LINKS=
3522         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3523         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3524         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3525         objformat="win32"
3526         ranlib=:
3527         enable dos_paths
3528         ;;
3529     cygwin*)
3530         target_os=cygwin
3531         shlibdir_default="$bindir_default"
3532         SLIBPREF="cyg"
3533         SLIBSUF=".dll"
3534         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3535         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3536         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3537         SLIB_INSTALL_LINKS=
3538         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3539         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3540         objformat="win32"
3541         enable dos_paths
3542         ;;
3543     *-dos|freedos|opendos)
3544         network_extralibs="-lsocket"
3545         objformat="coff"
3546         enable dos_paths
3547         add_cppflags -U__STRICT_ANSI__
3548         ;;
3549     linux)
3550         enable dv1394
3551         ;;
3552     irix*)
3553         target_os=irix
3554         ranlib="echo ignoring ranlib"
3555         ;;
3556     os/2*)
3557         strip="lxlite -CS"
3558         ln_s="cp -f"
3559         objformat="aout"
3560         add_cppflags -D_GNU_SOURCE
3561         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3562         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3563         LIBSUF="_s.a"
3564         SLIBPREF=""
3565         SLIBSUF=".dll"
3566         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3567         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3568         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3569             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3570             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3571             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3572             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3573             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3574         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3575             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3576         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3577         enable dos_paths
3578         enable_weak os2threads
3579         ;;
3580     gnu/kfreebsd)
3581         add_cppflags -D_BSD_SOURCE
3582         ;;
3583     gnu)
3584         ;;
3585     qnx)
3586         add_cppflags -D_QNX_SOURCE
3587         network_extralibs="-lsocket"
3588         ;;
3589     symbian)
3590         SLIBSUF=".dll"
3591         enable dos_paths
3592         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3593         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3594         add_ldflags -Wl,--target1-abs,--no-undefined \
3595                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3596                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3597         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3598                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3599                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3600         ;;
3601     osf1)
3602         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3603         ;;
3604     minix)
3605         ;;
3606     plan9)
3607         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3608                      -D_REENTRANT_SOURCE        \
3609                      -D_RESEARCH_SOURCE         \
3610                      -DFD_SETSIZE=96            \
3611                      -DHAVE_SOCK_OPTS
3612         add_compat strtod.o strtod=avpriv_strtod
3613         network_extralibs='-lbsd'
3614         exeobjs=compat/plan9/main.o
3615         disable ffserver
3616         cp_f='cp'
3617         ;;
3618     none)
3619         ;;
3620     *)
3621         die "Unknown OS '$target_os'."
3622         ;;
3623 esac
3624
3625 # determine libc flavour
3626
3627 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3628 if check_cpp_condition features.h "defined __UCLIBC__"; then
3629     libc_type=uclibc
3630     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3631 elif check_cpp_condition features.h "defined __GLIBC__"; then
3632     libc_type=glibc
3633     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3634 # MinGW headers can be installed on Cygwin, so check for newlib first.
3635 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3636     libc_type=newlib
3637     add_cppflags -U__STRICT_ANSI__
3638 elif check_header _mingw.h; then
3639     libc_type=mingw
3640     check_cpp_condition _mingw.h \
3641         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3642             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3643         die "ERROR: MinGW runtime version must be >= 3.15."
3644     add_cppflags -U__STRICT_ANSI__
3645     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3646             __MINGW64_VERSION_MAJOR < 3"; then
3647         add_compat msvcrt/snprintf.o
3648         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3649     else
3650         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3651     fi
3652 elif check_func_headers stdlib.h _get_doserrno; then
3653     libc_type=msvcrt
3654     add_compat strtod.o strtod=avpriv_strtod
3655     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3656                                  _snprintf=avpriv_snprintf  \
3657                                  vsnprintf=avpriv_vsnprintf
3658     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3659     # 0x601 by default unless something else is set by the user.
3660     # This can easily lead to us detecting functions only present
3661     # in such new versions and producing binaries requiring windows 7.0.
3662     # Therefore explicitly set the default to XP unless the user has
3663     # set something else on the command line.
3664     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3665 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3666     libc_type=klibc
3667 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3668     libc_type=bionic
3669     add_compat strtod.o strtod=avpriv_strtod
3670 fi
3671
3672 test -n "$libc_type" && enable $libc_type
3673
3674 # hacks for compiler/libc/os combinations
3675
3676 if enabled_all tms470 glibc; then
3677     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3678     add_cppflags -D__USER_LABEL_PREFIX__=
3679     add_cppflags -D__builtin_memset=memset
3680     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3681     add_cflags   -pds=48    # incompatible redefinition of macro
3682 fi
3683
3684 if enabled_all ccc glibc; then
3685     add_ldflags -Wl,-z,now  # calls to libots crash without this
3686 fi
3687
3688 esc(){
3689     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3690 }
3691
3692 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3693
3694 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3695
3696 set_default $PATHS_LIST
3697 set_default nm
3698
3699 # we need to build at least one lib type
3700 if ! enabled_any static shared; then
3701     cat <<EOF
3702 At least one library type must be built.
3703 Specify --enable-static to build the static libraries or --enable-shared to
3704 build the shared libraries as well. To only build the shared libraries specify
3705 --disable-static in addition to --enable-shared.
3706 EOF
3707     exit 1;
3708 fi
3709
3710 # backward compatibility layer for incompatible_libav/fork_abi
3711 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3712 enabled incompatible_libav_abi && enable incompatible_fork_abi
3713
3714 die_license_disabled() {
3715     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3716 }
3717
3718 die_license_disabled_gpl() {
3719     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3720 }
3721
3722 die_license_disabled gpl frei0r
3723 die_license_disabled gpl libcdio
3724 die_license_disabled gpl libutvideo
3725 die_license_disabled gpl libvidstab
3726 die_license_disabled gpl libx264
3727 die_license_disabled gpl libxavs
3728 die_license_disabled gpl libxvid
3729 die_license_disabled gpl x11grab
3730
3731 die_license_disabled nonfree libaacplus
3732 die_license_disabled nonfree libfaac
3733 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3734 enabled gpl && die_license_disabled_gpl nonfree openssl
3735
3736 die_license_disabled version3 libopencore_amrnb
3737 die_license_disabled version3 libopencore_amrwb
3738 die_license_disabled version3 libvo_aacenc
3739 die_license_disabled version3 libvo_amrwbenc
3740
3741 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3742
3743 disabled optimizations || check_cflags -fomit-frame-pointer
3744
3745 enable_weak_pic() {
3746     disabled pic && return
3747     enable pic
3748     add_cppflags -DPIC
3749     case "$target_os" in
3750     mingw*|cygwin*)
3751         ;;
3752     *)
3753         add_cflags -fPIC
3754         ;;
3755     esac
3756     add_asflags  -fPIC
3757 }
3758
3759 enabled pic && enable_weak_pic
3760
3761 check_cc <<EOF || die "Symbol mangling check failed."
3762 int ff_extern;
3763 EOF
3764 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3765 extern_prefix=${sym%%ff_extern*}
3766
3767 check_cc <<EOF && enable_weak inline_asm
3768 void foo(void) { __asm__ volatile ("" ::); }
3769 EOF
3770
3771 _restrict=
3772 for restrict_keyword in restrict __restrict__ __restrict; do
3773     check_cc <<EOF && _restrict=$restrict_keyword && break
3774 void foo(char * $restrict_keyword p);
3775 EOF
3776 done
3777
3778 check_cc <<EOF && enable attribute_packed
3779 struct { int x; } __attribute__((packed)) x;
3780 EOF
3781
3782 check_cc <<EOF && enable attribute_may_alias
3783 union { int x; } __attribute__((may_alias)) x;
3784 EOF
3785
3786 check_cc <<EOF || die "endian test failed"
3787 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3788 EOF
3789 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3790
3791 check_inline_asm inline_asm_labels '"1:\n"'
3792
3793 if enabled alpha; then
3794
3795     check_cflags -mieee
3796
3797 elif enabled arm; then
3798
3799     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3800 float func(float a, float b){ return a+b; }
3801 EOF
3802
3803     enabled thumb && check_cflags -mthumb || check_cflags -marm
3804     nogas=die
3805
3806     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3807         enable vfp_args
3808     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3809         case "${cross_prefix:-$cc}" in
3810             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3811             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3812 __asm__ (".eabi_attribute 28, 1");
3813 int main(void) { return 0; }
3814 EOF
3815         esac
3816         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3817     fi
3818
3819     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3820     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3821     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3822     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3823     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3824     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3825
3826     [ $target_os = linux ] ||
3827         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3828             $ARCH_EXT_LIST_ARM
3829
3830     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3831     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3832
3833     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3834
3835 elif enabled mips; then
3836
3837     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3838     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3839      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3840     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3841      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3842     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3843      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3844     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3845      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3846
3847 elif enabled parisc; then
3848
3849     if enabled gcc; then
3850         case $($cc -dumpversion) in
3851             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3852         esac
3853     fi
3854
3855 elif enabled ppc; then
3856
3857     enable local_aligned_8 local_aligned_16
3858
3859     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3860     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3861     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3862     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3863
3864     # AltiVec flags: The FSF version of GCC differs from the Apple version
3865     if enabled altivec; then
3866         nogas=warn
3867         check_cflags -maltivec -mabi=altivec &&
3868         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3869         check_cflags -faltivec
3870
3871         # check if our compiler supports Motorola AltiVec C API
3872         check_cc <<EOF || disable altivec
3873 $inc_altivec_h
3874 int main(void) {
3875     vector signed int v1 = (vector signed int) { 0 };
3876     vector signed int v2 = (vector signed int) { 1 };
3877     v1 = vec_add(v1, v2);
3878     return 0;
3879 }
3880 EOF
3881
3882         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3883     fi
3884
3885 elif enabled sparc; then
3886
3887     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3888
3889 elif enabled x86; then
3890
3891     check_builtin rdtsc    intrin.h   "__rdtsc()"
3892     check_builtin mm_empty mmintrin.h "_mm_empty()"
3893
3894     enable local_aligned_8 local_aligned_16
3895
3896     # check whether EBP is available on x86
3897     # As 'i' is stored on the stack, this program will crash
3898     # if the base pointer is used to access it because the
3899     # base pointer is cleared in the inline assembly code.
3900     check_exec_crash <<EOF && enable ebp_available
3901 volatile int i=0;
3902 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3903 return i;
3904 EOF
3905
3906     # check whether EBX is available on x86
3907     check_inline_asm ebx_available '""::"b"(0)' &&
3908         check_inline_asm ebx_available '"":::"%ebx"'
3909
3910     # check whether xmm clobbers are supported
3911     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3912
3913     # check whether binutils is new enough to compile SSSE3/MMXEXT
3914     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3915     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3916
3917     if ! disabled_any asm mmx yasm; then
3918         if check_cmd $yasmexe --version; then
3919             enabled x86_64 && yasm_extra="-m amd64"
3920             yasm_debug="-g dwarf2"
3921         elif check_cmd nasm -v; then
3922             yasmexe=nasm
3923             yasm_debug="-g -F dwarf"
3924             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3925         fi
3926
3927         YASMFLAGS="-f $objformat $yasm_extra"
3928         enabled pic               && append YASMFLAGS "-DPIC"
3929         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3930         case "$objformat" in
3931             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3932         esac
3933
3934         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3935             die "yasm not found, use --disable-yasm for a crippled build"
3936         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
3937         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3938         check_yasm "CPU amdnop" && enabled i686 && enable cpunop
3939     fi
3940
3941     case "$cpu" in
3942         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3943             disable fast_clz
3944         ;;
3945     esac
3946
3947 fi
3948
3949 if enabled asm; then
3950     as=${gas:=$as}
3951     check_as <<EOF && enable gnu_as || \
3952         $nogas "GNU assembler not found, install gas-preprocessor"
3953 .macro m n
3954 \n: .int 0
3955 .endm
3956 m x
3957 EOF
3958 fi
3959
3960 check_ldflags -Wl,--as-needed
3961
3962 if check_func dlopen; then
3963     ldl=
3964 elif check_func dlopen -ldl; then
3965     ldl=-ldl
3966 fi
3967
3968 if ! disabled network; then
3969     check_type "sys/types.h sys/socket.h" socklen_t
3970     check_type netdb.h "struct addrinfo"
3971     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3972     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3973     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3974     check_type netinet/in.h "struct sockaddr_in6"
3975     check_type poll.h "struct pollfd"
3976     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3977     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3978     check_type netinet/sctp.h "struct sctp_event_subscribe"
3979     check_func getaddrinfo $network_extralibs
3980     check_func getservbyport $network_extralibs
3981     # Prefer arpa/inet.h over winsock2
3982     if check_header arpa/inet.h ; then
3983         check_func closesocket
3984     elif check_header winsock2.h ; then
3985         check_func_headers winsock2.h closesocket -lws2 &&
3986             network_extralibs="-lws2" ||
3987         { check_func_headers winsock2.h closesocket -lws2_32 &&
3988             network_extralibs="-lws2_32"; }
3989         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3990         check_type ws2tcpip.h socklen_t
3991         check_type ws2tcpip.h "struct addrinfo"
3992         check_type ws2tcpip.h "struct group_source_req"
3993         check_type ws2tcpip.h "struct ip_mreq_source"
3994         check_type ws2tcpip.h "struct ipv6_mreq"
3995         check_type winsock2.h "struct pollfd"
3996         check_type ws2tcpip.h "struct sockaddr_in6"
3997         check_type ws2tcpip.h "struct sockaddr_storage"
3998         check_struct winsock2.h "struct sockaddr" sa_len
3999     else
4000         disable network
4001     fi
4002 fi
4003
4004 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4005 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4006
4007 check_func  access
4008 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4009 check_func  fcntl
4010 check_func  fork
4011 check_func_headers stdlib.h getenv
4012 check_func  gethrtime
4013 check_func  getopt
4014 check_func  getrusage
4015 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4016 check_func  gettimeofday
4017 check_func  inet_aton $network_extralibs
4018 check_func  isatty
4019 check_func  localtime_r
4020 check_func  ${malloc_prefix}memalign            && enable memalign
4021 check_func  mkstemp
4022 check_func  mmap
4023 check_func  mprotect
4024 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4025 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4026 check_func  setrlimit
4027 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4028 check_func  strerror_r
4029 check_func  sched_getaffinity
4030 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4031 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4032 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4033 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4034 check_builtin sarestart signal.h "SA_RESTART"
4035 check_func  sysconf
4036 check_func  sysctl
4037 check_func  usleep
4038 check_func_headers conio.h kbhit
4039 check_func_headers windows.h PeekNamedPipe
4040 check_func_headers io.h setmode
4041 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4042 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4043 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4044 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4045 check_func_headers windows.h GetProcessAffinityMask
4046 check_func_headers windows.h GetProcessTimes
4047 check_func_headers windows.h GetSystemTimeAsFileTime
4048 check_func_headers windows.h MapViewOfFile
4049 check_func_headers windows.h SetConsoleTextAttribute
4050 check_func_headers windows.h Sleep
4051 check_func_headers windows.h VirtualAlloc
4052 check_func_headers glob.h glob
4053 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4054
4055 check_header cl/cl.h
4056 check_header direct.h
4057 check_header dlfcn.h
4058 check_header dxva.h
4059 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4060 check_header io.h
4061 check_header libcrystalhd/libcrystalhd_if.h
4062 check_header malloc.h
4063 check_header poll.h
4064 check_header sys/mman.h
4065 check_header sys/param.h
4066 check_header sys/resource.h
4067 check_header sys/select.h
4068 check_header sys/time.h
4069 check_header termios.h
4070 check_header unistd.h
4071 check_header vdpau/vdpau.h
4072 check_header vdpau/vdpau_x11.h
4073 check_header VideoDecodeAcceleration/VDADecoder.h
4074 check_header windows.h
4075 check_header X11/extensions/XvMClib.h
4076 check_header asm/types.h
4077
4078 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4079 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4080
4081 if ! disabled w32threads && ! enabled pthreads; then
4082     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
4083 fi
4084
4085 # check for some common methods of building with pthread support
4086 # do this before the optional library checks as some of them require pthreads
4087 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4088     enable pthreads
4089     if check_func pthread_create; then
4090         :
4091     elif check_func pthread_create -pthread; then
4092         add_cflags -pthread
4093         add_extralibs -pthread
4094     elif check_func pthread_create -pthreads; then
4095         add_cflags -pthreads
4096         add_extralibs -pthreads
4097     elif check_func pthread_create -lpthreadGC2; then
4098         add_extralibs -lpthreadGC2
4099     elif ! check_lib pthread.h pthread_create -lpthread; then
4100         disable pthreads
4101     fi
4102 fi
4103
4104 for thread in $THREADS_LIST; do
4105     if enabled $thread; then
4106         test -n "$thread_type" &&
4107             die "ERROR: Only one thread type must be selected." ||
4108             thread_type="$thread"
4109     fi
4110 done
4111
4112 if enabled pthreads; then
4113   check_func pthread_cancel
4114 fi
4115
4116 enabled sync_val_compare_and_swap && enable atomics_gcc
4117 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
4118 enabled MemoryBarrier && enable atomics_win32
4119
4120 check_lib math.h sin -lm && LIBM="-lm"
4121 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4122
4123 atan2f_args=2
4124 ldexpf_args=2
4125 powf_args=2
4126
4127 for func in $MATH_FUNCS; do
4128     eval check_mathfunc $func \${${func}_args:-1}
4129 done
4130
4131 # these are off by default, so fail if requested and not available
4132 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4133                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4134                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4135 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4136 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4137 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4138 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4139 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4140 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4141 enabled libbluray         && require libbluray libbluray/bluray.h bd_open -lbluray
4142 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4143                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4144                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4145 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4146 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4147 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4148 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"
4149 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4150 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
4151 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme
4152 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4153                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4154                                done || die "ERROR: libgsm not found"; }
4155 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4156 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4157 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4158 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4159 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4160 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4161 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4162 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4163                                check_lib openjpeg.h opj_version -lopenjpeg ||
4164                                die "ERROR: libopenjpeg not found"; }
4165 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4166 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4167 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4168 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4169 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4170 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_frame
4171 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4172 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4173 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4174     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4175     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4176 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4177 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4178                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4179                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4180 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4181 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4182 enabled libvidstab        && require_pkg_config vidstab vid.stab/libvidstab.h vsMotionDetectInit
4183 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4184 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4185 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4186 enabled libvpx            && {
4187     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4188                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4189     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 ||
4190                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4191     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4192     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4193 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4194 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4195                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4196                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4197 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4198 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4199 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4200 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4201                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4202                                die "ERROR: openal not found"; } &&
4203                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4204                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4205 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4206                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4207                                die "ERROR: opencl not found"; } &&
4208                              { enabled_any w32threads os2threads &&
4209                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4210                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4211                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4212                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4213 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4214                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4215                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4216                                die "ERROR: openssl not found"; }
4217
4218 if enabled gnutls; then
4219     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4220     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4221 fi
4222
4223 # libdc1394 check
4224 if enabled libdc1394; then
4225     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4226         enable libdc1394_2; } ||
4227     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4228         enable libdc1394_1; } ||
4229     die "ERROR: No version of libdc1394 found "
4230 fi
4231
4232 SDL_CONFIG="${cross_prefix}sdl-config"
4233 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4234     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4235     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4236     enable sdl
4237 else
4238   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4239     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4240     sdl_libs=$("${SDL_CONFIG}" --libs)
4241     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4242     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4243     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4244     enable sdl
4245   fi
4246 fi
4247 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4248
4249 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4250 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4251 perl --version > /dev/null 2>&1 && enable perl || disable perl
4252 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
4253 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4254
4255 check_header linux/fb.h
4256 check_header linux/videodev.h
4257 check_header linux/videodev2.h
4258 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4259
4260 check_header sys/videoio.h
4261
4262 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4263 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4264 # w32api 3.12 had it defined wrong
4265 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4266
4267 check_type "dshow.h" IBaseFilter
4268
4269 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4270 { check_header dev/bktr/ioctl_meteor.h &&
4271   check_header dev/bktr/ioctl_bt848.h; } ||
4272 { check_header machine/ioctl_meteor.h &&
4273   check_header machine/ioctl_bt848.h; } ||
4274 { check_header dev/video/meteor/ioctl_meteor.h &&
4275   check_header dev/video/bktr/ioctl_bt848.h; } ||
4276 check_header dev/ic/bt8xx.h
4277
4278 check_header sndio.h
4279 if check_struct sys/soundcard.h audio_buf_info bytes; then
4280     enable_safe sys/soundcard.h
4281 else
4282     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4283     #include <sys/soundcard.h>
4284     audio_buf_info abc;
4285 EOF
4286 fi
4287 check_header soundcard.h
4288
4289 enabled_any alsa_indev alsa_outdev &&
4290     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4291
4292 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4293     check_func jack_port_get_latency_range -ljack
4294
4295 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4296
4297 if enabled libcdio; then
4298     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4299     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4300     die "ERROR: libcdio-paranoia not found"
4301 fi
4302
4303 enabled x11grab                                           &&
4304 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
4305 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4306 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4307
4308 enabled vaapi &&
4309     check_lib va/va.h vaInitialize -lva ||
4310     disable vaapi
4311
4312 enabled vdpau &&
4313     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4314     disable vdpau
4315
4316 # Funny iconv installations are not unusual, so check it after all flags have been set
4317 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4318
4319 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4320
4321 # add some useful compiler flags if supported
4322 check_cflags -Wdeclaration-after-statement
4323 check_cflags -Wall
4324 check_cflags -Wno-parentheses
4325 check_cflags -Wno-switch
4326 check_cflags -Wno-format-zero-length
4327 check_cflags -Wdisabled-optimization
4328 check_cflags -Wpointer-arith
4329 check_cflags -Wredundant-decls
4330 check_cflags -Wno-pointer-sign
4331 check_cflags -Wwrite-strings
4332 check_cflags -Wtype-limits
4333 check_cflags -Wundef
4334 check_cflags -Wmissing-prototypes
4335 check_cflags -Wno-pointer-to-int-cast
4336 check_cflags -Wstrict-prototypes
4337 enabled extra_warnings && check_cflags -Winline
4338
4339 # add some linker flags
4340 check_ldflags -Wl,--warn-common
4341 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4342 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4343
4344 enabled xmm_clobber_test &&
4345     check_ldflags -Wl,--wrap,avcodec_open2              \
4346                   -Wl,--wrap,avcodec_decode_audio4      \
4347                   -Wl,--wrap,avcodec_decode_video2      \
4348                   -Wl,--wrap,avcodec_decode_subtitle2   \
4349                   -Wl,--wrap,avcodec_encode_audio2      \
4350                   -Wl,--wrap,avcodec_encode_video       \
4351                   -Wl,--wrap,avcodec_encode_subtitle    \
4352                   -Wl,--wrap,sws_scale ||
4353     disable xmm_clobber_test
4354
4355 echo "X{};" > $TMPV
4356 if test_ldflags -Wl,--version-script,$TMPV; then
4357     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4358     check_cc <<EOF && enable symver_asm_label
4359 void ff_foo(void) __asm__ ("av_foo@VERSION");
4360 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4361 EOF
4362     check_cc <<EOF && enable symver_gnu_asm
4363 __asm__(".symver ff_foo,av_foo@VERSION");
4364 void ff_foo(void) {}
4365 EOF
4366 fi
4367
4368 if [ -z "$optflags" ]; then
4369     if enabled small; then
4370         optflags=$cflags_size
4371     elif enabled optimizations; then
4372         optflags=$cflags_speed
4373     else
4374         optflags=$cflags_noopt
4375     fi
4376 fi
4377
4378 check_optflags(){
4379     check_cflags "$@"
4380     enabled lto && check_ldflags "$@"
4381 }
4382
4383
4384 if enabled lto; then
4385     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4386     check_cflags  -flto
4387     check_ldflags -flto $cpuflags
4388 fi
4389
4390 check_optflags $optflags
4391 check_optflags -fno-math-errno
4392 check_optflags -fno-signed-zeros
4393
4394 enabled ftrapv && check_cflags -ftrapv
4395
4396 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4397 int x;
4398 EOF
4399
4400
4401 if enabled icc; then
4402     # Just warnings, no remarks
4403     check_cflags -w1
4404     # -wd: Disable following warnings
4405     # 144, 167, 556: -Wno-pointer-sign
4406     # 188: enumerated type mixed with another type
4407     # 1292: attribute "foo" ignored
4408     # 1419: external declaration in primary source file
4409     # 10006: ignoring unknown option -fno-signed-zeros
4410     # 10148: ignoring unknown option -Wno-parentheses
4411     # 10156: ignoring option '-W'; no argument required
4412     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4413     # 11030: Warning unknown option --as-needed
4414     # 10156: ignoring option '-export'; no argument required
4415     check_ldflags -wd10156,11030
4416     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4417     enable ebp_available
4418     if enabled x86_32; then
4419         icc_version=$($cc -dumpversion)
4420         test ${icc_version%%.*} -ge 11 &&
4421             check_cflags -falign-stack=maintain-16-byte ||
4422             disable aligned_stack
4423     fi
4424 elif enabled ccc; then
4425     # disable some annoying warnings
4426     add_cflags -msg_disable bitnotint
4427     add_cflags -msg_disable mixfuncvoid
4428     add_cflags -msg_disable nonstandcast
4429     add_cflags -msg_disable unsupieee
4430 elif enabled gcc; then
4431     check_optflags -fno-tree-vectorize
4432     check_cflags -Werror=implicit-function-declaration
4433     check_cflags -Werror=missing-prototypes
4434     check_cflags -Werror=return-type
4435     check_cflags -Werror=vla
4436 elif enabled llvm_gcc; then
4437     check_cflags -mllvm -stack-alignment=16
4438 elif enabled clang; then
4439     check_cflags -mllvm -stack-alignment=16
4440     check_cflags -Qunused-arguments
4441     check_cflags -Werror=implicit-function-declaration
4442     check_cflags -Werror=missing-prototypes
4443     check_cflags -Werror=return-type
4444 elif enabled armcc; then
4445     # 2523: use of inline assembler is deprecated
4446     add_cflags -W${armcc_opt},--diag_suppress=2523
4447     add_cflags -W${armcc_opt},--diag_suppress=1207
4448     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4449     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4450     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4451     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4452 elif enabled tms470; then
4453     add_cflags -pds=824 -pds=837
4454 elif enabled pathscale; then
4455     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4456 elif enabled_any msvc icl; then
4457     enabled x86_32 && disable aligned_stack
4458     enabled_all x86_32 debug && add_cflags -Oy-
4459     enabled debug && add_ldflags -debug
4460     if enabled icl; then
4461         # basically -fstrict-aliasing that does not work (correctly) on icl 13.x
4462         check_cpp_condition "windows.h" "__ICL < 1300" && add_cflags -Qansi-alias
4463         # icl will pass the inline asm tests but inline asm is currently
4464         # not supported (build will fail)
4465         disable inline_asm
4466     fi
4467 fi
4468
4469 case $target_os in
4470     osf1)
4471         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4472     ;;
4473     plan9)
4474         add_cppflags -Dmain=plan9_main
4475     ;;
4476 esac
4477
4478 enable frame_thread_encoder
4479 enabled_any $THREADS_LIST      && enable threads
4480 enabled_any $ATOMICS_LIST      && enable atomics_native
4481
4482 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4483
4484 check_deps $CONFIG_LIST       \
4485            $CONFIG_EXTRA      \
4486            $HAVE_LIST         \
4487            $ALL_COMPONENTS    \
4488
4489
4490 if test $target_os = "haiku"; then
4491     disable memalign
4492     disable posix_memalign
4493 fi
4494
4495 ! enabled_any memalign posix_memalign aligned_malloc &&
4496     enabled_any $need_memalign && enable memalign_hack
4497
4498 # add_dep lib dep
4499 # -> enable ${lib}_deps_${dep}
4500 # -> add $dep to ${lib}_deps only once
4501 add_dep() {
4502     lib=$1
4503     dep=$2
4504     enabled "${lib}_deps_${dep}" && return 0
4505     enable  "${lib}_deps_${dep}"
4506     prepend "${lib}_deps" $dep
4507 }
4508
4509 # merge deps lib components
4510 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4511 merge_deps() {
4512     lib=$1
4513     shift
4514     for comp in $*; do
4515         enabled $comp || continue
4516         eval "dep=\"\$${comp}_deps\""
4517         for d in $dep; do
4518             add_dep $lib $d
4519         done
4520     done
4521 }
4522
4523 merge_deps libavfilter $FILTER_LIST
4524
4525 echo "install prefix            $prefix"
4526 echo "source path               $source_path"
4527 echo "C compiler                $cc"
4528 echo "ARCH                      $arch ($cpu)"
4529 if test "$build_suffix" != ""; then
4530     echo "build suffix              $build_suffix"
4531 fi
4532 if test "$progs_suffix" != ""; then
4533     echo "progs suffix              $progs_suffix"
4534 fi
4535 if test "$extra_version" != ""; then
4536     echo "version string suffix     $extra_version"
4537 fi
4538 echo "big-endian                ${bigendian-no}"
4539 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4540 if enabled x86; then
4541     echo "${yasmexe}                      ${yasm-no}"
4542     echo "MMX enabled               ${mmx-no}"
4543     echo "MMXEXT enabled            ${mmxext-no}"
4544     echo "3DNow! enabled            ${amd3dnow-no}"
4545     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4546     echo "SSE enabled               ${sse-no}"
4547     echo "SSSE3 enabled             ${ssse3-no}"
4548     echo "AVX enabled               ${avx-no}"
4549     echo "FMA4 enabled              ${fma4-no}"
4550     echo "i686 features enabled     ${i686-no}"
4551     echo "CMOV is fast              ${fast_cmov-no}"
4552     echo "EBX available             ${ebx_available-no}"
4553     echo "EBP available             ${ebp_available-no}"
4554 fi
4555 if enabled arm; then
4556     echo "ARMv5TE enabled           ${armv5te-no}"
4557     echo "ARMv6 enabled             ${armv6-no}"
4558     echo "ARMv6T2 enabled           ${armv6t2-no}"
4559     echo "VFP enabled               ${vfp-no}"
4560     echo "NEON enabled              ${neon-no}"
4561     echo "THUMB enabled             ${thumb-no}"
4562 fi
4563 if enabled mips; then
4564     echo "MIPS FPU enabled          ${mipsfpu-no}"
4565     echo "MIPS32R2 enabled          ${mips32r2-no}"
4566     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4567     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4568 fi
4569 if enabled ppc; then
4570     echo "AltiVec enabled           ${altivec-no}"
4571     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4572     echo "dcbzl available           ${dcbzl-no}"
4573 fi
4574 if enabled sparc; then
4575     echo "VIS enabled               ${vis-no}"
4576 fi
4577 echo "debug symbols             ${debug-no}"
4578 echo "strip symbols             ${stripping-no}"
4579 echo "optimize for size         ${small-no}"
4580 echo "optimizations             ${optimizations-no}"
4581 echo "static                    ${static-no}"
4582 echo "shared                    ${shared-no}"
4583 echo "postprocessing support    ${postproc-no}"
4584 echo "new filter support        ${avfilter-no}"
4585 echo "network support           ${network-no}"
4586 echo "threading support         ${thread_type-no}"
4587 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4588 echo "SDL support               ${sdl-no}"
4589 echo "opencl enabled            ${opencl-no}"
4590 echo "texi2html enabled         ${texi2html-no}"
4591 echo "perl enabled              ${perl-no}"
4592 echo "pod2man enabled           ${pod2man-no}"
4593 echo "makeinfo enabled          ${makeinfo-no}"
4594 test -n "$random_seed" &&
4595     echo "random seed               ${random_seed}"
4596 echo
4597
4598 echo "External libraries:"
4599 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4600 echo
4601
4602 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4603     echo "Enabled ${type}s:"
4604     eval list=\$$(toupper $type)_LIST
4605     print_enabled '_*' $list | print_3_columns
4606     echo
4607 done
4608
4609 license="LGPL version 2.1 or later"
4610 if enabled nonfree; then
4611     license="nonfree and unredistributable"
4612 elif enabled gplv3; then
4613     license="GPL version 3 or later"
4614 elif enabled lgplv3; then
4615     license="LGPL version 3 or later"
4616 elif enabled gpl; then
4617     license="GPL version 2 or later"
4618 fi
4619
4620 echo "License: $license"
4621
4622 echo "Creating config.mak, config.h, and doc/config.texi..."
4623
4624 test -e Makefile || $ln_s "$source_path/Makefile" .
4625
4626 enabled stripping || strip="echo skipping strip"
4627
4628 config_files="$TMPH config.mak doc/config.texi"
4629
4630 cat > config.mak <<EOF
4631 # Automatically generated by configure - do not modify!
4632 ifndef FFMPEG_CONFIG_MAK
4633 FFMPEG_CONFIG_MAK=1
4634 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4635 prefix=$prefix
4636 LIBDIR=\$(DESTDIR)$libdir
4637 SHLIBDIR=\$(DESTDIR)$shlibdir
4638 INCDIR=\$(DESTDIR)$incdir
4639 BINDIR=\$(DESTDIR)$bindir
4640 DATADIR=\$(DESTDIR)$datadir
4641 MANDIR=\$(DESTDIR)$mandir
4642 SRC_PATH=$source_path
4643 ifndef MAIN_MAKEFILE
4644 SRC_PATH:=\$(SRC_PATH:.%=..%)
4645 endif
4646 CC_IDENT=$cc_ident
4647 ARCH=$arch
4648 CC=$cc
4649 CXX=$cxx
4650 AS=$as
4651 LD=$ld
4652 DEPCC=$dep_cc
4653 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4654 DEPAS=$as
4655 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4656 YASM=$yasmexe
4657 DEPYASM=$yasmexe
4658 AR=$ar
4659 ARFLAGS=$arflags
4660 AR_O=$ar_o
4661 RANLIB=$ranlib
4662 CP=cp -p
4663 LN_S=$ln_s
4664 STRIP=$strip
4665 CPPFLAGS=$CPPFLAGS
4666 CFLAGS=$CFLAGS
4667 CXXFLAGS=$CXXFLAGS
4668 ASFLAGS=$ASFLAGS
4669 AS_C=$AS_C
4670 AS_O=$AS_O
4671 CC_C=$CC_C
4672 CC_E=$CC_E
4673 CC_O=$CC_O
4674 CXX_C=$CXX_C
4675 CXX_O=$CXX_O
4676 LD_O=$LD_O
4677 LD_LIB=$LD_LIB
4678 LD_PATH=$LD_PATH
4679 DLLTOOL=$dlltool
4680 LDFLAGS=$LDFLAGS
4681 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4682 YASMFLAGS=$YASMFLAGS
4683 BUILDSUF=$build_suffix
4684 PROGSSUF=$progs_suffix
4685 FULLNAME=$FULLNAME
4686 LIBPREF=$LIBPREF
4687 LIBSUF=$LIBSUF
4688 LIBNAME=$LIBNAME
4689 SLIBPREF=$SLIBPREF
4690 SLIBSUF=$SLIBSUF
4691 EXESUF=$EXESUF
4692 EXTRA_VERSION=$extra_version
4693 CCDEP=$CCDEP
4694 CXXDEP=$CXXDEP
4695 CCDEP_FLAGS=$CCDEP_FLAGS
4696 ASDEP=$ASDEP
4697 ASDEP_FLAGS=$ASDEP_FLAGS
4698 CC_DEPFLAGS=$CC_DEPFLAGS
4699 AS_DEPFLAGS=$AS_DEPFLAGS
4700 HOSTCC=$host_cc
4701 HOSTLD=$host_ld
4702 HOSTCFLAGS=$host_cflags
4703 HOSTCPPFLAGS=$host_cppflags
4704 HOSTEXESUF=$HOSTEXESUF
4705 HOSTLDFLAGS=$host_ldflags
4706 HOSTLIBS=$host_libs
4707 DEPHOSTCC=$host_cc
4708 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4709 HOSTCCDEP=$HOSTCCDEP
4710 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4711 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4712 HOSTCC_C=$HOSTCC_C
4713 HOSTCC_O=$HOSTCC_O
4714 HOSTLD_O=$HOSTLD_O
4715 TARGET_EXEC=$target_exec $target_exec_args
4716 TARGET_PATH=$target_path
4717 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4718 LIBS-ffplay=$sdl_libs
4719 CFLAGS-ffplay=$sdl_cflags
4720 ZLIB=$($ldflags_filter -lz)
4721 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4722 EXTRALIBS=$extralibs
4723 COMPAT_OBJS=$compat_objs
4724 EXEOBJS=$exeobjs
4725 INSTALL=$install
4726 LIBTARGET=${LIBTARGET}
4727 SLIBNAME=${SLIBNAME}
4728 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4729 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4730 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4731 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4732 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4733 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4734 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4735 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4736 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4737 NOREDZONE_FLAGS=$noredzone_flags
4738 EOF
4739
4740 get_version(){
4741     lcname=lib${1}
4742     name=$(toupper $lcname)
4743     file=$source_path/$lcname/version.h
4744     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4745     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4746     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4747     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4748     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4749 }
4750
4751 map 'get_version $v' $LIBRARY_LIST
4752
4753 cat > $TMPH <<EOF
4754 /* Automatically generated by configure - do not modify! */
4755 #ifndef FFMPEG_CONFIG_H
4756 #define FFMPEG_CONFIG_H
4757 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4758 #define FFMPEG_LICENSE "$(c_escape $license)"
4759 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4760 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4761 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4762 #define av_restrict $_restrict
4763 #define EXTERN_PREFIX "${extern_prefix}"
4764 #define EXTERN_ASM ${extern_prefix}
4765 #define SLIBSUF "$SLIBSUF"
4766 #define HAVE_MMX2 HAVE_MMXEXT
4767 EOF
4768
4769 test -n "$assert_level" &&
4770     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4771
4772 test -n "$malloc_prefix" &&
4773     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4774
4775 if enabled yasm; then
4776     append config_files $TMPASM
4777     printf '' >$TMPASM
4778 fi
4779
4780 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4781
4782
4783 mkdir -p doc
4784 echo "@c auto-generated by configure" > doc/config.texi
4785
4786 print_config ARCH_   "$config_files" $ARCH_LIST
4787 print_config HAVE_   "$config_files" $HAVE_LIST
4788 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4789                                      $CONFIG_EXTRA      \
4790                                      $ALL_COMPONENTS    \
4791
4792 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4793 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4794
4795 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4796 cp_if_changed $TMPH config.h
4797 touch .config
4798
4799 enabled yasm && cp_if_changed $TMPASM config.asm
4800
4801 cat > $TMPH <<EOF
4802 /* Generated by ffconf */
4803 #ifndef AVUTIL_AVCONFIG_H
4804 #define AVUTIL_AVCONFIG_H
4805 EOF
4806
4807 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4808
4809 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4810
4811 cp_if_changed $TMPH libavutil/avconfig.h
4812
4813 if test -n "$WARNINGS"; then
4814     printf "\n$WARNINGS"
4815     enabled fatal_warnings && exit 1
4816 fi
4817
4818 # build pkg-config files
4819
4820 pkgconfig_generate(){
4821     name=$1
4822     shortname=${name#lib}${build_suffix}
4823     comment=$2
4824     version=$3
4825     libs=$4
4826     requires=$5
4827     enabled ${name#lib} || return 0
4828     mkdir -p $name
4829     cat <<EOF > $name/$name${build_suffix}.pc
4830 prefix=$prefix
4831 exec_prefix=\${prefix}
4832 libdir=$libdir
4833 includedir=$incdir
4834
4835 Name: $name
4836 Description: $comment
4837 Version: $version
4838 Requires: $(enabled shared || echo $requires)
4839 Requires.private: $(enabled shared && echo $requires)
4840 Conflicts:
4841 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4842 Libs.private: $(enabled shared && echo $libs)
4843 Cflags: -I\${includedir}
4844 EOF
4845
4846 mkdir -p doc/examples/pc-uninstalled
4847 includedir=${source_path}
4848 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
4849     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
4850 prefix=
4851 exec_prefix=
4852 libdir=\${pcfiledir}/../../../$name
4853 includedir=${includedir}
4854
4855 Name: $name
4856 Description: $comment
4857 Version: $version
4858 Requires: $requires
4859 Conflicts:
4860 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4861 Cflags: -I\${includedir}
4862 EOF
4863 }
4864
4865 lavfi_libs="libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4866 enabled libavfilter_deps_avcodec    && prepend lavfi_libs "libavcodec${build_suffix} = $LIBAVCODEC_VERSION,"
4867 enabled libavfilter_deps_avformat   && prepend lavfi_libs "libavformat${build_suffix} = $LIBAVFORMAT_VERSION,"
4868 enabled libavfilter_deps_avresample && prepend lavfi_libs "libavresample${build_suffix} = $LIBAVRESAMPLE_VERSION,"
4869 enabled libavfilter_deps_swscale    && prepend lavfi_libs "libswscale${build_suffix} = $LIBSWSCALE_VERSION,"
4870 enabled libavfilter_deps_swresample && prepend lavfi_libs "libswresample${build_suffix} = $LIBSWRESAMPLE_VERSION,"
4871 enabled libavfilter_deps_postproc   && prepend lavfi_libs "libpostproc${build_suffix} = $LIBPOSTPROC_VERSION,"
4872 lavfi_libs=${lavfi_libs%, }
4873
4874 lavd_libs="libavformat${build_suffix} = $LIBAVFORMAT_VERSION"
4875 enabled lavfi_indev && prepend lavd_libs "libavfilter${build_suffix} = $LIBAVFILTER_VERSION,"
4876
4877 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
4878 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4879 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec${build_suffix} = $LIBAVCODEC_VERSION"
4880 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs" "$lavd_libs"
4881 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4882 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""           "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4883 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4884 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4885 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4886
4887 fix_ffmpeg_remote(){
4888     git_remote_from=$1
4889     git_remote_to=$2
4890     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
4891     if [ "$fixme_remote" != "" ]; then
4892         echolog "
4893 Outdated domain in git config, the official domain for ffmpeg git is since
4894 November 2011, source.ffmpeg.org, both the old and the new point to the same
4895 repository and server. To update it enter the following commands:
4896 "
4897         for remote in $fixme_remote; do
4898             echolog "git remote set-url $remote $git_remote_to"
4899         done
4900     fi
4901 }
4902
4903 if test -f "$source_path/.git/config"; then
4904     remote_from=git.videolan.org
4905     remote_to=source.ffmpeg.org
4906     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
4907     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
4908 fi