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     isatty
1469     jack_port_get_latency_range
1470     kbhit
1471     ldbrx
1472     libdc1394_1
1473     libdc1394_2
1474     local_aligned_16
1475     local_aligned_8
1476     localtime_r
1477     loongson
1478     lzo1x_999_compress
1479     machine_ioctl_bt848_h
1480     machine_ioctl_meteor_h
1481     machine_rw_barrier
1482     makeinfo
1483     malloc_h
1484     MapViewOfFile
1485     memalign
1486     MemoryBarrier
1487     mkstemp
1488     mm_empty
1489     mmap
1490     mprotect
1491     msvcrt
1492     nanosleep
1493     openjpeg_1_5_openjpeg_h
1494     PeekNamedPipe
1495     perl
1496     pod2man
1497     poll_h
1498     posix_memalign
1499     pthread_cancel
1500     rdtsc
1501     rsync_contimeout
1502     sched_getaffinity
1503     sdl
1504     SetConsoleTextAttribute
1505     setmode
1506     setrlimit
1507     Sleep
1508     sndio_h
1509     socklen_t
1510     soundcard_h
1511     strerror_r
1512     struct_addrinfo
1513     struct_group_source_req
1514     struct_ip_mreq_source
1515     struct_ipv6_mreq
1516     struct_pollfd
1517     struct_rusage_ru_maxrss
1518     struct_sctp_event_subscribe
1519     struct_sockaddr_in6
1520     struct_sockaddr_sa_len
1521     struct_sockaddr_storage
1522     struct_stat_st_mtim_tv_nsec
1523     struct_v4l2_frmivalenum_discrete
1524     symver_asm_label
1525     symver_gnu_asm
1526     sync_val_compare_and_swap
1527     sysconf
1528     sysctl
1529     sys_mman_h
1530     sys_param_h
1531     sys_resource_h
1532     sys_select_h
1533     sys_soundcard_h
1534     sys_time_h
1535     sys_videoio_h
1536     termios_h
1537     texi2html
1538     threads
1539     unistd_h
1540     usleep
1541     vfp_args
1542     VirtualAlloc
1543     windows_h
1544     winsock2_h
1545     xform_asm
1546     xmm_clobbers
1547 "
1548
1549 # options emitted with CONFIG_ prefix but not available on the command line
1550 CONFIG_EXTRA="
1551     aandcttables
1552     ac3dsp
1553     audio_frame_queue
1554     dsputil
1555     frame_thread_encoder
1556     gcrypt
1557     golomb
1558     gplv3
1559     h264chroma
1560     h264dsp
1561     h264pred
1562     h264qpel
1563     hpeldsp
1564     huffman
1565     lgplv3
1566     lpc
1567     mpegaudio
1568     mpegaudiodsp
1569     mpegvideo
1570     mpegvideoenc
1571     nettle
1572     rangecoder
1573     rtpdec
1574     rtpenc_chain
1575     sinewin
1576     videodsp
1577     vp3dsp
1578 "
1579
1580 CMDLINE_SELECT="
1581     $ARCH_EXT_LIST
1582     $CONFIG_LIST
1583     $HAVE_LIST_CMDLINE
1584     $THREADS_LIST
1585     asm
1586     cross_compile
1587     debug
1588     extra_warnings
1589     logging
1590     lto
1591     optimizations
1592     stripping
1593 "
1594
1595 PATHS_LIST='
1596     bindir
1597     datadir
1598     incdir
1599     libdir
1600     mandir
1601     prefix
1602     shlibdir
1603 '
1604
1605 CMDLINE_SET="
1606     $PATHS_LIST
1607     ar
1608     arch
1609     as
1610     assert_level
1611     build_suffix
1612     cc
1613     cpu
1614     cross_prefix
1615     cxx
1616     dep_cc
1617     extra_version
1618     host_cc
1619     host_cflags
1620     host_ld
1621     host_ldflags
1622     host_libs
1623     host_os
1624     install
1625     ld
1626     logfile
1627     malloc_prefix
1628     nm
1629     optflags
1630     pkg_config
1631     progs_suffix
1632     random_seed
1633     samples
1634     strip
1635     sysinclude
1636     sysroot
1637     target_exec
1638     target_os
1639     target_path
1640     target_samples
1641     toolchain
1642     valgrind
1643     yasmexe
1644 "
1645
1646 CMDLINE_APPEND="
1647     extra_cflags
1648     extra_cxxflags
1649     host_cppflags
1650 "
1651
1652 # code dependency declarations
1653
1654 # architecture extensions
1655
1656 armv5te_deps="arm"
1657 armv6_deps="arm"
1658 armv6t2_deps="arm"
1659 neon_deps="arm"
1660 vfp_deps="arm"
1661 vfpv3_deps="vfp"
1662
1663 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1664
1665 mipsfpu_deps="mips"
1666 mips32r2_deps="mips"
1667 mipsdspr1_deps="mips"
1668 mipsdspr2_deps="mips"
1669
1670 altivec_deps="ppc"
1671 ppc4xx_deps="ppc"
1672
1673 vis_deps="sparc"
1674
1675 x86_64_suggest="fast_cmov i686"
1676
1677 amd3dnow_deps="mmx"
1678 amd3dnowext_deps="amd3dnow"
1679 mmx_deps="x86"
1680 mmxext_deps="mmx"
1681 sse_deps="mmxext"
1682 sse2_deps="sse"
1683 sse3_deps="sse2"
1684 ssse3_deps="sse3"
1685 sse4_deps="ssse3"
1686 sse42_deps="sse4"
1687 avx_deps="sse42"
1688 fma4_deps="avx"
1689
1690 mmx_external_deps="yasm"
1691 mmx_inline_deps="inline_asm"
1692 mmx_suggest="mmx_external mmx_inline"
1693
1694 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1695     eval dep=\$${ext}_deps
1696     eval ${ext}_external_deps='"${dep}_external"'
1697     eval ${ext}_inline_deps='"${dep}_inline"'
1698     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1699 done
1700
1701 aligned_stack_if_any="ppc x86"
1702 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1703 fast_clz_if_any="alpha avr32 mips ppc x86"
1704 fast_unaligned_if_any="ppc x86"
1705
1706 inline_asm_deps="!tms470"
1707 need_memalign="altivec neon sse"
1708
1709 symver_if_any="symver_asm_label symver_gnu_asm"
1710
1711 log2_deps="!msvcrt"
1712
1713 # subsystems
1714 dct_select="rdft"
1715 error_resilience_select="dsputil"
1716 frame_thread_encoder_deps="encoders threads"
1717 lpc_select="dsputil"
1718 mdct_select="fft"
1719 rdft_select="fft"
1720 mpegaudio_select="mpegaudiodsp"
1721 mpegaudiodsp_select="dct"
1722 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1723 mpegvideoenc_select="mpegvideo"
1724
1725 # decoders / encoders
1726 aac_decoder_select="mdct sinewin"
1727 aac_encoder_select="audio_frame_queue mdct sinewin"
1728 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1729 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1730 ac3_encoder_select="mdct ac3dsp dsputil"
1731 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1732 aic_decoder_select="dsputil golomb"
1733 alac_encoder_select="lpc"
1734 als_decoder_select="dsputil"
1735 amrnb_decoder_select="lsp"
1736 amrwb_decoder_select="lsp"
1737 amv_decoder_select="dsputil hpeldsp"
1738 amv_encoder_select="aandcttables"
1739 ape_decoder_select="dsputil"
1740 asv1_decoder_select="dsputil"
1741 asv1_encoder_select="dsputil"
1742 asv2_decoder_select="dsputil"
1743 asv2_encoder_select="dsputil"
1744 atrac1_decoder_select="mdct sinewin"
1745 atrac3_decoder_select="mdct"
1746 bink_decoder_select="dsputil hpeldsp"
1747 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1748 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1749 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1750 cllc_decoder_select="dsputil"
1751 comfortnoise_encoder_select="lpc"
1752 cook_decoder_select="dsputil mdct sinewin"
1753 cscd_decoder_select="lzo"
1754 cscd_decoder_suggest="zlib"
1755 dca_decoder_select="mdct"
1756 dirac_decoder_select="dsputil dwt golomb videodsp"
1757 dnxhd_decoder_select="dsputil"
1758 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1759 dvvideo_decoder_select="dsputil"
1760 dvvideo_encoder_select="dsputil"
1761 dxa_decoder_select="zlib"
1762 eac3_decoder_select="ac3_decoder"
1763 eac3_encoder_select="ac3_encoder"
1764 eamad_decoder_select="aandcttables dsputil mpegvideo"
1765 eatgq_decoder_select="aandcttables"
1766 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1767 exr_decoder_select="zlib"
1768 ffv1_decoder_select="dsputil golomb rangecoder"
1769 ffv1_encoder_select="dsputil rangecoder"
1770 ffvhuff_decoder_select="dsputil"
1771 ffvhuff_encoder_select="dsputil huffman"
1772 flac_decoder_select="golomb"
1773 flac_encoder_select="dsputil golomb lpc"
1774 flashsv_decoder_select="zlib"
1775 flashsv_encoder_select="zlib"
1776 flashsv2_encoder_select="zlib"
1777 flashsv2_decoder_select="zlib"
1778 flv_decoder_select="h263_decoder"
1779 flv_encoder_select="h263_encoder"
1780 fourxm_decoder_select="dsputil"
1781 fraps_decoder_select="dsputil huffman"
1782 g2m_decoder_select="dsputil zlib"
1783 g729_decoder_select="dsputil"
1784 h261_decoder_select="error_resilience mpegvideo"
1785 h261_encoder_select="aandcttables mpegvideoenc"
1786 h263_decoder_select="error_resilience h263_parser mpegvideo"
1787 h263_encoder_select="aandcttables mpegvideoenc"
1788 h263i_decoder_select="h263_decoder"
1789 h263p_encoder_select="h263_encoder"
1790 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1791 h264_decoder_suggest="error_resilience"
1792 huffyuv_decoder_select="dsputil"
1793 huffyuv_encoder_select="dsputil huffman"
1794 iac_decoder_select="dsputil fft mdct sinewin"
1795 imc_decoder_select="dsputil fft mdct sinewin"
1796 indeo3_decoder_select="hpeldsp"
1797 interplay_video_decoder_select="hpeldsp"
1798 jpegls_decoder_select="dsputil golomb hpeldsp"
1799 jpegls_encoder_select="golomb"
1800 jv_decoder_select="dsputil"
1801 lagarith_decoder_select="dsputil"
1802 ljpeg_encoder_select="aandcttables mpegvideoenc"
1803 loco_decoder_select="golomb"
1804 mdec_decoder_select="dsputil error_resilience mpegvideo"
1805 mimic_decoder_select="dsputil hpeldsp"
1806 mjpeg_decoder_select="dsputil hpeldsp"
1807 mjpegb_decoder_select="dsputil hpeldsp"
1808 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1809 mlp_decoder_select="dsputil mlp_parser"
1810 motionpixels_decoder_select="dsputil"
1811 mp1_decoder_select="mpegaudio"
1812 mp1float_decoder_select="mpegaudio"
1813 mp2_decoder_select="mpegaudio"
1814 mp2float_decoder_select="mpegaudio"
1815 mp3_decoder_select="mpegaudio"
1816 mp3adu_decoder_select="mpegaudio"
1817 mp3adufloat_decoder_select="mpegaudio"
1818 mp3float_decoder_select="mpegaudio"
1819 mp3on4_decoder_select="mpegaudio"
1820 mp3on4float_decoder_select="mpegaudio"
1821 mpc7_decoder_select="dsputil mpegaudiodsp"
1822 mpc8_decoder_select="dsputil mpegaudiodsp"
1823 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1824 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1825 mpeg1video_decoder_select="error_resilience mpegvideo"
1826 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1827 mpeg2video_decoder_select="error_resilience mpegvideo"
1828 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1829 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1830 mpeg4_encoder_select="h263_encoder"
1831 msmpeg4v1_decoder_select="h263_decoder"
1832 msmpeg4v2_decoder_select="h263_decoder"
1833 msmpeg4v2_encoder_select="h263_encoder"
1834 msmpeg4v3_decoder_select="h263_decoder"
1835 msmpeg4v3_encoder_select="h263_encoder"
1836 mss2_decoder_select="error_resilience vc1_decoder"
1837 mxpeg_decoder_select="dsputil hpeldsp"
1838 nellymoser_decoder_select="mdct sinewin"
1839 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1840 nuv_decoder_select="dsputil lzo"
1841 png_decoder_select="zlib"
1842 png_encoder_select="dsputil zlib"
1843 prores_decoder_select="dsputil"
1844 prores_encoder_select="dsputil"
1845 qcelp_decoder_select="lsp"
1846 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1847 ra_144_encoder_select="audio_frame_queue lpc"
1848 ralf_decoder_select="golomb"
1849 rtjpeg_decoder_select="dsputil"
1850 rv10_decoder_select="error_resilience h263_decoder"
1851 rv10_encoder_select="h263_encoder"
1852 rv20_decoder_select="error_resilience h263_decoder"
1853 rv20_encoder_select="h263_encoder"
1854 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1855 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1856 shorten_decoder_select="golomb"
1857 sipr_decoder_select="lsp"
1858 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1859 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1860 sonic_decoder_select="golomb"
1861 sonic_encoder_select="golomb"
1862 sonic_ls_encoder_select="golomb"
1863 sp5x_decoder_select="dsputil hpeldsp"
1864 svq1_decoder_select="hpeldsp"
1865 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1866 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1867 svq3_decoder_suggest="error_resilience zlib"
1868 tak_decoder_select="dsputil"
1869 theora_decoder_select="vp3_decoder"
1870 tiff_decoder_suggest="zlib"
1871 tiff_encoder_suggest="zlib"
1872 thp_decoder_select="dsputil hpeldsp"
1873 truehd_decoder_select="mlp_parser"
1874 truemotion2_decoder_select="dsputil"
1875 truespeech_decoder_select="dsputil"
1876 tscc_decoder_select="zlib"
1877 twinvq_decoder_select="mdct lsp sinewin"
1878 utvideo_decoder_select="dsputil"
1879 utvideo_encoder_select="dsputil huffman"
1880 vble_decoder_select="dsputil"
1881 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1882 vc1image_decoder_select="vc1_decoder"
1883 vorbis_decoder_select="mdct"
1884 vorbis_encoder_select="mdct"
1885 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1886 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1887 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1888 vp6a_decoder_select="vp6_decoder"
1889 vp6f_decoder_select="vp6_decoder"
1890 vp8_decoder_select="h264pred videodsp"
1891 wmapro_decoder_select="mdct sinewin"
1892 wmav1_decoder_select="mdct sinewin"
1893 wmav1_encoder_select="mdct sinewin"
1894 wmav2_decoder_select="mdct sinewin"
1895 wmav2_encoder_select="mdct sinewin"
1896 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1897 wmv1_decoder_select="h263_decoder"
1898 wmv1_encoder_select="h263_encoder"
1899 wmv2_decoder_select="h263_decoder videodsp"
1900 wmv2_encoder_select="h263_encoder"
1901 wmv3_decoder_select="vc1_decoder"
1902 wmv3image_decoder_select="wmv3_decoder"
1903 zerocodec_decoder_select="zlib"
1904 zlib_decoder_select="zlib"
1905 zlib_encoder_select="zlib"
1906 zmbv_decoder_select="zlib"
1907 zmbv_encoder_select="zlib"
1908
1909 # hardware accelerators
1910 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1911 dxva2_deps="dxva2api_h"
1912 vaapi_deps="va_va_h"
1913 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1914 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1915 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1916
1917 h263_vaapi_hwaccel_deps="vaapi"
1918 h263_vaapi_hwaccel_select="h263_decoder"
1919 h263_vdpau_hwaccel_deps="vdpau"
1920 h263_vdpau_hwaccel_select="h263_decoder"
1921 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1922 h264_dxva2_hwaccel_deps="dxva2"
1923 h264_dxva2_hwaccel_select="h264_decoder"
1924 h264_vaapi_hwaccel_deps="vaapi"
1925 h264_vaapi_hwaccel_select="h264_decoder"
1926 h264_vda_decoder_deps="vda"
1927 h264_vda_decoder_select="h264_decoder"
1928 h264_vda_hwaccel_deps="vda"
1929 h264_vda_hwaccel_select="h264_decoder"
1930 h264_vdpau_decoder_deps="vdpau"
1931 h264_vdpau_decoder_select="h264_decoder"
1932 h264_vdpau_hwaccel_deps="vdpau"
1933 h264_vdpau_hwaccel_select="h264_decoder"
1934 mpeg_vdpau_decoder_deps="vdpau"
1935 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1936 mpeg1_vdpau_decoder_deps="vdpau"
1937 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1938 mpeg1_vdpau_hwaccel_deps="vdpau"
1939 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1940 mpeg2_crystalhd_decoder_select="crystalhd"
1941 mpeg2_dxva2_hwaccel_deps="dxva2"
1942 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1943 mpeg2_vaapi_hwaccel_deps="vaapi"
1944 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1945 mpeg2_vdpau_hwaccel_deps="vdpau"
1946 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1947 mpeg4_crystalhd_decoder_select="crystalhd"
1948 mpeg4_vaapi_hwaccel_deps="vaapi"
1949 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1950 mpeg4_vdpau_decoder_deps="vdpau"
1951 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1952 mpeg4_vdpau_hwaccel_deps="vdpau"
1953 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1954 msmpeg4_crystalhd_decoder_select="crystalhd"
1955 vc1_crystalhd_decoder_select="crystalhd"
1956 vc1_dxva2_hwaccel_deps="dxva2"
1957 vc1_dxva2_hwaccel_select="vc1_decoder"
1958 vc1_vaapi_hwaccel_deps="vaapi"
1959 vc1_vaapi_hwaccel_select="vc1_decoder"
1960 vc1_vdpau_decoder_deps="vdpau"
1961 vc1_vdpau_decoder_select="vc1_decoder"
1962 vc1_vdpau_hwaccel_deps="vdpau"
1963 vc1_vdpau_hwaccel_select="vc1_decoder"
1964 wmv3_crystalhd_decoder_select="crystalhd"
1965 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1966 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1967 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1968 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1969
1970 # parsers
1971 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1972 mpeg4video_parser_select="error_resilience mpegvideo"
1973 mpegvideo_parser_select="error_resilience mpegvideo"
1974 vc1_parser_select="mpegvideo"
1975
1976 # external libraries
1977 libaacplus_encoder_deps="libaacplus"
1978 libcelt_decoder_deps="libcelt"
1979 libfaac_encoder_deps="libfaac"
1980 libfaac_encoder_select="audio_frame_queue"
1981 libfdk_aac_encoder_deps="libfdk_aac"
1982 libfdk_aac_encoder_select="audio_frame_queue"
1983 libgme_demuxer_deps="libgme"
1984 libgsm_decoder_deps="libgsm"
1985 libgsm_encoder_deps="libgsm"
1986 libgsm_ms_decoder_deps="libgsm"
1987 libgsm_ms_encoder_deps="libgsm"
1988 libilbc_decoder_deps="libilbc"
1989 libilbc_encoder_deps="libilbc"
1990 libmodplug_demuxer_deps="libmodplug"
1991 libmp3lame_encoder_deps="libmp3lame"
1992 libmp3lame_encoder_select="audio_frame_queue"
1993 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1994 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1995 libopencore_amrnb_encoder_select="audio_frame_queue"
1996 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1997 libopenjpeg_decoder_deps="libopenjpeg"
1998 libopenjpeg_encoder_deps="libopenjpeg"
1999 libopus_decoder_deps="libopus"
2000 libopus_encoder_deps="libopus"
2001 libopus_encoder_select="audio_frame_queue"
2002 libquvi_demuxer_deps="libquvi"
2003 libschroedinger_decoder_deps="libschroedinger"
2004 libschroedinger_encoder_deps="libschroedinger"
2005 libshine_encoder_deps="libshine"
2006 libshine_encoder_select="audio_frame_queue"
2007 libspeex_decoder_deps="libspeex"
2008 libspeex_encoder_deps="libspeex"
2009 libspeex_encoder_select="audio_frame_queue"
2010 libstagefright_h264_decoder_deps="libstagefright_h264"
2011 libtheora_encoder_deps="libtheora"
2012 libtwolame_encoder_deps="libtwolame"
2013 libvo_aacenc_encoder_deps="libvo_aacenc"
2014 libvo_aacenc_encoder_select="audio_frame_queue"
2015 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2016 libvorbis_decoder_deps="libvorbis"
2017 libvorbis_encoder_deps="libvorbis"
2018 libvorbis_encoder_select="audio_frame_queue"
2019 libvpx_vp8_decoder_deps="libvpx"
2020 libvpx_vp8_encoder_deps="libvpx"
2021 libvpx_vp9_decoder_deps="libvpx"
2022 libvpx_vp9_encoder_deps="libvpx"
2023 libwavpack_encoder_deps="libwavpack"
2024 libx264_encoder_deps="libx264"
2025 libx264rgb_encoder_deps="libx264"
2026 libxavs_encoder_deps="libxavs"
2027 libxvid_encoder_deps="libxvid"
2028 libutvideo_decoder_deps="libutvideo"
2029 libutvideo_encoder_deps="libutvideo"
2030
2031 # demuxers / muxers
2032 ac3_demuxer_select="ac3_parser"
2033 asf_stream_muxer_select="asf_muxer"
2034 avisynth_demuxer_deps="avisynth"
2035 dirac_demuxer_select="dirac_parser"
2036 dts_demuxer_select="dca_parser"
2037 dtshd_demuxer_select="dca_parser"
2038 eac3_demuxer_select="ac3_parser"
2039 f4v_muxer_select="mov_muxer"
2040 flac_demuxer_select="flac_parser"
2041 ipod_muxer_select="mov_muxer"
2042 ismv_muxer_select="mov_muxer"
2043 libnut_demuxer_deps="libnut"
2044 libnut_muxer_deps="libnut"
2045 matroska_audio_muxer_select="matroska_muxer"
2046 matroska_demuxer_suggest="bzlib lzo zlib"
2047 mov_demuxer_suggest="zlib"
2048 mov_muxer_select="rtpenc_chain"
2049 mp3_demuxer_select="mpegaudio_parser"
2050 mp4_muxer_select="mov_muxer"
2051 mpegts_muxer_select="adts_muxer latm_muxer"
2052 mpegtsraw_demuxer_select="mpegts_demuxer"
2053 mxf_d10_muxer_select="mxf_muxer"
2054 ogg_demuxer_select="golomb"
2055 psp_muxer_select="mov_muxer"
2056 rtp_demuxer_select="sdp_demuxer"
2057 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2058 rtsp_demuxer_select="http_protocol rtpdec"
2059 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2060 sap_demuxer_select="sdp_demuxer"
2061 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2062 sdp_demuxer_select="rtpdec"
2063 smoothstreaming_muxer_select="ismv_muxer"
2064 spdif_muxer_select="aac_parser"
2065 tak_demuxer_select="tak_parser"
2066 tg2_muxer_select="mov_muxer"
2067 tgp_muxer_select="mov_muxer"
2068 vobsub_demuxer_select="mpegps_demuxer"
2069 w64_demuxer_deps="wav_demuxer"
2070 w64_muxer_deps="wav_muxer"
2071
2072 # indevs / outdevs
2073 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2074 alsa_outdev_deps="alsa_asoundlib_h"
2075 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2076 caca_outdev_deps="libcaca"
2077 dshow_indev_deps="IBaseFilter"
2078 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2079 dv1394_indev_deps="dv1394 dv_demuxer"
2080 fbdev_indev_deps="linux_fb_h"
2081 iec61883_indev_deps="libiec61883"
2082 jack_indev_deps="jack_jack_h sem_timedwait"
2083 lavfi_indev_deps="avfilter"
2084 libcdio_indev_deps="libcdio"
2085 libdc1394_indev_deps="libdc1394"
2086 libv4l2_indev_deps="libv4l2"
2087 openal_indev_deps="openal"
2088 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2089 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2090 pulse_indev_deps="libpulse"
2091 sdl_outdev_deps="sdl"
2092 sndio_indev_deps="sndio_h"
2093 sndio_outdev_deps="sndio_h"
2094 v4l_indev_deps="linux_videodev_h"
2095 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2096 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2097 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2098 vfwcap_indev_extralibs="-lavicap32"
2099 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2100 xv_outdev_extralibs="-lXv -lX11 -lXext"
2101 x11grab_indev_deps="x11grab"
2102
2103 # protocols
2104 bluray_protocol_deps="libbluray"
2105 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2106 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2107 ffrtmpcrypt_protocol_select="tcp_protocol"
2108 ffrtmphttp_protocol_deps="!librtmp_protocol"
2109 ffrtmphttp_protocol_select="http_protocol"
2110 ftp_protocol_select="tcp_protocol"
2111 gopher_protocol_select="network"
2112 httpproxy_protocol_select="tcp_protocol"
2113 http_protocol_select="tcp_protocol"
2114 https_protocol_select="tls_protocol"
2115 librtmp_protocol_deps="librtmp"
2116 librtmpe_protocol_deps="librtmp"
2117 librtmps_protocol_deps="librtmp"
2118 librtmpt_protocol_deps="librtmp"
2119 librtmpte_protocol_deps="librtmp"
2120 mmsh_protocol_select="http_protocol"
2121 mmst_protocol_select="network"
2122 rtmp_protocol_deps="!librtmp_protocol"
2123 rtmp_protocol_select="tcp_protocol"
2124 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2125 rtmps_protocol_deps="!librtmp_protocol"
2126 rtmps_protocol_select="tls_protocol"
2127 rtmpt_protocol_select="ffrtmphttp_protocol"
2128 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2129 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2130 rtp_protocol_select="udp_protocol"
2131 sctp_protocol_deps="struct_sctp_event_subscribe"
2132 sctp_protocol_select="network"
2133 srtp_protocol_select="rtp_protocol"
2134 tcp_protocol_select="network"
2135 tls_protocol_deps_any="openssl gnutls"
2136 tls_protocol_select="tcp_protocol"
2137 udp_protocol_select="network"
2138
2139 # filters
2140 aconvert_filter_deps="swresample"
2141 amovie_filter_deps="avcodec avformat"
2142 aresample_filter_deps="swresample"
2143 ass_filter_deps="libass"
2144 asyncts_filter_deps="avresample"
2145 atempo_filter_deps="avcodec rdft"
2146 azmq_filter_deps="libzmq"
2147 blackframe_filter_deps="gpl"
2148 boxblur_filter_deps="gpl"
2149 colormatrix_filter_deps="gpl"
2150 cropdetect_filter_deps="gpl"
2151 dctdnoiz_filter_deps="avcodec fft"
2152 delogo_filter_deps="gpl"
2153 deshake_filter_deps="avcodec"
2154 deshake_filter_select="dsputil"
2155 drawtext_filter_deps="libfreetype"
2156 ebur128_filter_deps="gpl"
2157 flite_filter_deps="libflite"
2158 frei0r_filter_deps="frei0r dlopen"
2159 frei0r_filter_extralibs='$ldl'
2160 frei0r_src_filter_deps="frei0r dlopen"
2161 frei0r_src_filter_extralibs='$ldl'
2162 geq_filter_deps="gpl"
2163 histeq_filter_deps="gpl"
2164 hqdn3d_filter_deps="gpl"
2165 hue_filter_deps="gpl"
2166 interlace_filter_deps="gpl"
2167 kerndeint_filter_deps="gpl"
2168 mcdeint_filter_deps="avcodec gpl"
2169 movie_filter_deps="avcodec avformat"
2170 mp_filter_deps="gpl avcodec swscale inline_asm"
2171 mpdecimate_filter_deps="gpl avcodec"
2172 mptestsrc_filter_deps="gpl"
2173 negate_filter_deps="lut_filter"
2174 noise_filter_deps="gpl"
2175 resample_filter_deps="avresample"
2176 ocv_filter_deps="libopencv"
2177 owdenoise_filter_deps="gpl"
2178 pan_filter_deps="swresample"
2179 pp_filter_deps="gpl postproc"
2180 removelogo_filter_deps="avcodec avformat swscale"
2181 sab_filter_deps="gpl swscale"
2182 scale_filter_deps="swscale"
2183 smartblur_filter_deps="gpl swscale"
2184 showspectrum_filter_deps="avcodec rdft"
2185 spp_filter_deps="gpl avcodec fft"
2186 stereo3d_filter_deps="gpl"
2187 subtitles_filter_deps="avformat avcodec libass"
2188 super2xsai_filter_deps="gpl"
2189 tinterlace_filter_deps="gpl"
2190 vidstabdetect_filter_deps="libvidstab"
2191 vidstabtransform_filter_deps="libvidstab"
2192 yadif_filter_deps="gpl"
2193 pixfmts_super2xsai_test_deps="super2xsai_filter"
2194 tinterlace_merge_test_deps="tinterlace_filter"
2195 tinterlace_pad_test_deps="tinterlace_filter"
2196 zmq_filter_deps="libzmq"
2197
2198 # libraries
2199 avcodec_deps="avutil"
2200 avdevice_deps="avutil avcodec avformat"
2201 avfilter_deps="avutil"
2202 avformat_deps="avutil avcodec"
2203 avresample_deps="avutil"
2204 postproc_deps="avutil gpl"
2205 swscale_deps="avutil"
2206
2207 # programs
2208 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2209 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2210                null_filter
2211                setpts_filter trim_filter"
2212 ffplay_deps="avcodec avformat swscale swresample sdl"
2213 ffplay_select="rdft crop_filter"
2214 ffprobe_deps="avcodec avformat"
2215 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
2216 ffserver_extralibs='$ldl'
2217
2218 # documentation
2219 podpages_deps="perl"
2220 manpages_deps="perl pod2man"
2221 htmlpages_deps="texi2html"
2222 txtpages_deps="makeinfo"
2223 doc_deps_any="manpages htmlpages podpages txtpages"
2224
2225 # default parameters
2226
2227 logfile="config.log"
2228
2229 # installation paths
2230 prefix_default="/usr/local"
2231 bindir_default='${prefix}/bin'
2232 datadir_default='${prefix}/share/ffmpeg'
2233 incdir_default='${prefix}/include'
2234 libdir_default='${prefix}/lib'
2235 mandir_default='${prefix}/share/man'
2236 shlibdir_default="$libdir_default"
2237
2238 # toolchain
2239 ar_default="ar"
2240 cc_default="gcc"
2241 cxx_default="g++"
2242 host_cc_default="gcc"
2243 cp_f="cp -f"
2244 install="install"
2245 ln_s="ln -s -f"
2246 nm_default="nm -g"
2247 objformat="elf"
2248 pkg_config_default=pkg-config
2249 ranlib="ranlib"
2250 strip_default="strip"
2251 yasmexe_default="yasm"
2252
2253 nogas=":"
2254
2255 # machine
2256 arch_default=$(uname -m)
2257 cpu="generic"
2258
2259 # OS
2260 target_os_default=$(tolower $(uname -s))
2261 host_os=$target_os_default
2262
2263 # configurable options
2264 enable $PROGRAM_LIST
2265 enable $DOCUMENT_LIST
2266 enable $(filter_out avresample $LIBRARY_LIST)
2267 enable stripping
2268
2269 enable asm
2270 enable debug
2271 enable doc
2272 enable optimizations
2273 enable runtime_cpudetect
2274 enable safe_bitstream_reader
2275 enable static
2276 enable swscale_alpha
2277
2278 # Enable hwaccels by default.
2279 enable dxva2 vaapi vdpau
2280
2281 # build settings
2282 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2283 FFSERVERLDFLAGS=-Wl,-E
2284 LIBPREF="lib"
2285 LIBSUF=".a"
2286 FULLNAME='$(NAME)$(BUILDSUF)'
2287 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2288 SLIBPREF="lib"
2289 SLIBSUF=".so"
2290 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2291 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2292 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2293 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2294 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2295 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2296
2297 asflags_filter=echo
2298 cflags_filter=echo
2299 ldflags_filter=echo
2300
2301 AS_C='-c'
2302 AS_O='-o $@'
2303 CC_C='-c'
2304 CC_E='-E -o $@'
2305 CC_O='-o $@'
2306 CXX_C='-c'
2307 CXX_O='-o $@'
2308 LD_O='-o $@'
2309 LD_LIB='-l%'
2310 LD_PATH='-L'
2311 HOSTCC_C='-c'
2312 HOSTCC_O='-o $@'
2313 HOSTLD_O='-o $@'
2314
2315 host_cflags='-O3 -g'
2316 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2317 host_libs='-lm'
2318 host_cflags_filter=echo
2319 host_ldflags_filter=echo
2320
2321 target_path='$(CURDIR)'
2322
2323 # since the object filename is not given with the -MM flag, the compiler
2324 # is only able to print the basename, and we must add the path ourselves
2325 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2326 DEPFLAGS='-MM'
2327
2328 # find source path
2329 if test -f configure; then
2330     source_path=.
2331 else
2332     source_path=$(cd $(dirname "$0"); pwd)
2333     echo "$source_path" | grep -q '[[:blank:]]' &&
2334         die "Out of tree builds are impossible with whitespace in source path."
2335     test -e "$source_path/config.h" &&
2336         die "Out of tree builds are impossible with config.h in source dir."
2337 fi
2338
2339 for v in "$@"; do
2340     r=${v#*=}
2341     l=${v%"$r"}
2342     r=$(sh_quote "$r")
2343     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2344 done
2345
2346 find_things(){
2347     thing=$1
2348     pattern=$2
2349     file=$source_path/$3
2350     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2351 }
2352
2353 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2354 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2355 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2356 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2357 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2358 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2359 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2360 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2361 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2362 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2363 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2364
2365 ALL_COMPONENTS="
2366     $BSF_LIST
2367     $DECODER_LIST
2368     $DEMUXER_LIST
2369     $ENCODER_LIST
2370     $FILTER_LIST
2371     $HWACCEL_LIST
2372     $INDEV_LIST
2373     $MUXER_LIST
2374     $OUTDEV_LIST
2375     $PARSER_LIST
2376     $PROTOCOL_LIST
2377 "
2378
2379 for n in $COMPONENT_LIST; do
2380     v=$(toupper ${n%s})_LIST
2381     eval enable \$$v
2382     eval ${n}_if_any="\$$v"
2383 done
2384
2385 enable $ARCH_EXT_LIST
2386
2387 die_unknown(){
2388     echo "Unknown option \"$1\"."
2389     echo "See $0 --help for available options."
2390     exit 1
2391 }
2392
2393 print_3_columns() {
2394     cat | tr ' ' '\n' | sort | pr -r -3 -t
2395 }
2396
2397 show_list() {
2398     suffix=_$1
2399     shift
2400     echo $* | sed s/$suffix//g | print_3_columns
2401     exit 0
2402 }
2403
2404 rand_list(){
2405     IFS=', '
2406     set -- $*
2407     unset IFS
2408     for thing; do
2409         comp=${thing%:*}
2410         prob=${thing#$comp}
2411         prob=${prob#:}
2412         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2413         echo "prob ${prob:-0.5}"
2414         printf '%s\n' $comp
2415     done
2416 }
2417
2418 do_random(){
2419     action=$1
2420     shift
2421     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2422     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2423 }
2424
2425 for opt do
2426     optval="${opt#*=}"
2427     case "$opt" in
2428         --extra-ldflags=*)
2429             add_ldflags $optval
2430         ;;
2431         --extra-libs=*)
2432             add_extralibs $optval
2433         ;;
2434         --disable-devices)
2435             disable $INDEV_LIST $OUTDEV_LIST
2436         ;;
2437         --enable-debug=*)
2438             debuglevel="$optval"
2439         ;;
2440         --disable-programs)
2441             disable $PROGRAM_LIST
2442         ;;
2443         --disable-everything)
2444             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2445         ;;
2446         --disable-all)
2447             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2448             disable $LIBRARY_LIST $PROGRAM_LIST doc
2449         ;;
2450         --enable-random|--disable-random)
2451             action=${opt%%-random}
2452             do_random ${action#--} $COMPONENT_LIST
2453         ;;
2454         --enable-random=*|--disable-random=*)
2455             action=${opt%%-random=*}
2456             do_random ${action#--} $optval
2457         ;;
2458         --enable-*=*|--disable-*=*)
2459             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2460             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2461             eval list=\$$(toupper $thing)_LIST
2462             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2463             list=$(filter "$name" $list)
2464             [ "$list" = "" ] && warn "Option $opt did not match anything"
2465             $action $list
2466         ;;
2467         --enable-?*|--disable-?*)
2468             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2469             if is_in $option $COMPONENT_LIST; then
2470                 test $action = disable && action=unset
2471                 eval $action \$$(toupper ${option%s})_LIST
2472             elif is_in $option $CMDLINE_SELECT; then
2473                 $action $option
2474             else
2475                 die_unknown $opt
2476             fi
2477         ;;
2478         --list-*)
2479             NAME="${opt#--list-}"
2480             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2481             NAME=${NAME%s}
2482             eval show_list $NAME \$$(toupper $NAME)_LIST
2483         ;;
2484         --help|-h) show_help
2485         ;;
2486         --fatal-warnings) enable fatal_warnings
2487         ;;
2488         *)
2489             optname="${opt%%=*}"
2490             optname="${optname#--}"
2491             optname=$(echo "$optname" | sed 's/-/_/g')
2492             if is_in $optname $CMDLINE_SET; then
2493                 eval $optname='$optval'
2494             elif is_in $optname $CMDLINE_APPEND; then
2495                 append $optname "$optval"
2496             else
2497                 die_unknown $opt
2498             fi
2499         ;;
2500     esac
2501 done
2502
2503 disabled logging && logfile=/dev/null
2504
2505 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2506 set >> $logfile
2507
2508 test -n "$cross_prefix" && enable cross_compile
2509
2510 if enabled cross_compile; then
2511     test -n "$arch" && test -n "$target_os" ||
2512         die "Must specify target arch and OS when cross-compiling"
2513 fi
2514
2515 ar_default="${cross_prefix}${ar_default}"
2516 cc_default="${cross_prefix}${cc_default}"
2517 cxx_default="${cross_prefix}${cxx_default}"
2518 nm_default="${cross_prefix}${nm_default}"
2519 pkg_config_default="${cross_prefix}${pkg_config_default}"
2520 ranlib="${cross_prefix}${ranlib}"
2521 strip_default="${cross_prefix}${strip_default}"
2522
2523 sysinclude_default="${sysroot}/usr/include"
2524
2525 test -n "$valgrind" && toolchain="valgrind-memcheck"
2526
2527 case "$toolchain" in
2528     clang-asan)
2529         cc_default="clang"
2530         add_cflags  -fsanitize=address
2531         add_ldflags -fsanitize=address
2532     ;;
2533     clang-tsan)
2534         cc_default="clang"
2535         add_cflags  -fsanitize=thread -pie
2536         add_ldflags -fsanitize=thread -pie
2537     ;;
2538     gcc-asan)
2539         cc_default="gcc"
2540         add_cflags  -fsanitize=address
2541         add_ldflags -fsanitize=address
2542     ;;
2543     gcc-tsan)
2544         cc_default="gcc"
2545         add_cflags  -fsanitize=thread -pie -fPIC
2546         add_ldflags -fsanitize=thread -pie -fPIC
2547     ;;
2548     valgrind-massif)
2549         target_exec_default=${valgrind:-"valgrind"}
2550         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"
2551     ;;
2552     valgrind-memcheck)
2553         target_exec_default=${valgrind:-"valgrind"}
2554         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2555     ;;
2556     msvc)
2557         cc_default="c99wrap cl"
2558         ld_default="c99wrap link"
2559         nm_default="dumpbin -symbols"
2560         ar_default="lib"
2561         target_os_default="win32"
2562     ;;
2563     icl)
2564         cc_default="c99wrap -noconv icl"
2565         ld_default="c99wrap xilink"
2566         nm_default="dumpbin -symbols"
2567         ar_default="xilib"
2568         target_os_default="win32"
2569     ;;
2570     gcov)
2571         add_cflags  -fprofile-arcs -ftest-coverage
2572         add_ldflags -fprofile-arcs -ftest-coverage
2573     ;;
2574     ?*)
2575         die "Unknown toolchain $toolchain"
2576     ;;
2577 esac
2578
2579 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2580 enabled cross_compile || host_cc_default=$cc
2581 set_default host_cc
2582
2583 if ! $pkg_config --version >/dev/null 2>&1; then
2584     warn "$pkg_config not found, library detection may fail."
2585     pkg_config=false
2586 fi
2587
2588 exesuf() {
2589     case $1 in
2590         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2591     esac
2592 }
2593
2594 EXESUF=$(exesuf $target_os)
2595 HOSTEXESUF=$(exesuf $host_os)
2596
2597 # set temporary file name
2598 : ${TMPDIR:=$TEMPDIR}
2599 : ${TMPDIR:=$TMP}
2600 : ${TMPDIR:=/tmp}
2601
2602 if ! check_cmd mktemp -u XXXXXX; then
2603     # simple replacement for missing mktemp
2604     # NOT SAFE FOR GENERAL USE
2605     mktemp(){
2606         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2607     }
2608 fi
2609
2610 tmpfile(){
2611     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2612         (set -C; exec > $tmp) 2>/dev/null ||
2613         die "Unable to create temporary file in $TMPDIR."
2614     append TMPFILES $tmp
2615     eval $1=$tmp
2616 }
2617
2618 trap 'rm -f -- $TMPFILES' EXIT
2619
2620 tmpfile TMPASM .asm
2621 tmpfile TMPC   .c
2622 tmpfile TMPCPP .cpp
2623 tmpfile TMPE   $EXESUF
2624 tmpfile TMPH   .h
2625 tmpfile TMPO   .o
2626 tmpfile TMPS   .S
2627 tmpfile TMPSH  .sh
2628 tmpfile TMPV   .ver
2629
2630 unset -f mktemp
2631
2632 chmod +x $TMPE
2633
2634 # make sure we can execute files in $TMPDIR
2635 cat > $TMPSH 2>> $logfile <<EOF
2636 #! /bin/sh
2637 EOF
2638 chmod +x $TMPSH >> $logfile 2>&1
2639 if ! $TMPSH >> $logfile 2>&1; then
2640     cat <<EOF
2641 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2642 variable to another directory and make sure that it is not mounted noexec.
2643 EOF
2644     die "Sanity test failed."
2645 fi
2646
2647 ccc_flags(){
2648     for flag; do
2649         case $flag in
2650             -std=c99)           echo -c99                       ;;
2651             -mcpu=*)            echo -arch ${flag#*=}           ;;
2652             -mieee)             echo -ieee                      ;;
2653             -O*|-fast)          echo $flag                      ;;
2654             -fno-math-errno)    echo -assume nomath_errno       ;;
2655             -g)                 echo -g3                        ;;
2656             -Wall)              echo -msg_enable level2         ;;
2657             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2658             -Wl,*)              echo $flag                      ;;
2659             -f*|-W*)                                            ;;
2660             *)                  echo $flag                      ;;
2661         esac
2662    done
2663 }
2664
2665 msvc_common_flags(){
2666     for flag; do
2667         case $flag in
2668             # In addition to specifying certain flags under the compiler
2669             # specific filters, they must be specified here as well or else the
2670             # generic catch all at the bottom will print the original flag.
2671             -Wall)                ;;
2672             -std=c99)             ;;
2673             # Common flags
2674             -fomit-frame-pointer) ;;
2675             -g)                   echo -Z7 ;;
2676             -fno-math-errno)      ;;
2677             -fno-common)          ;;
2678             -fno-signed-zeros)    ;;
2679             -fPIC)                ;;
2680             -mthumb)              ;;
2681             -march=*)             ;;
2682             -lz)                  echo zlib.lib ;;
2683             -lavifil32)           echo vfw32.lib ;;
2684             -lavicap32)           echo vfw32.lib user32.lib ;;
2685             -l*)                  echo ${flag#-l}.lib ;;
2686             *)                    echo $flag ;;
2687         esac
2688     done
2689 }
2690
2691 msvc_flags(){
2692     msvc_common_flags "$@"
2693     for flag; do
2694         case $flag in
2695             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2696                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2697                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2698                                        -wd4554 \
2699                                        -wd4996 -wd4273 ;;
2700         esac
2701     done
2702 }
2703
2704 icl_flags(){
2705     msvc_common_flags "$@"
2706     for flag; do
2707         case $flag in
2708             # Despite what Intel's documentation says -Wall, which is supported
2709             # on Windows, does enable remarks so disable them here.
2710             -Wall)                echo $flag -Qdiag-disable:remark ;;
2711             -std=c99)             echo -Qstd=c99 ;;
2712         esac
2713     done
2714 }
2715
2716 pgi_flags(){
2717     for flag; do
2718         case $flag in
2719             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2720             -fomit-frame-pointer) echo -Mnoframe ;;
2721             -g)                   echo -gopt ;;
2722             *)                    echo $flag ;;
2723         esac
2724     done
2725 }
2726
2727 suncc_flags(){
2728     for flag; do
2729         case $flag in
2730             -march=*|-mcpu=*)
2731                 case "${flag#*=}" in
2732                     native)                   echo -xtarget=native       ;;
2733                     v9|niagara)               echo -xarch=sparc          ;;
2734                     ultrasparc)               echo -xarch=sparcvis       ;;
2735                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2736                     i586|pentium)             echo -xchip=pentium        ;;
2737                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2738                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2739                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2740                     pentium4*)          echo -xtarget=pentium4           ;;
2741                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2742                     *-sse3)             echo -xarch=sse3                 ;;
2743                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2744                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2745                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2746                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2747                     bdver*)                    echo -xarch=avx           ;;
2748                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2749                     k8|opteron|athlon64|athlon-fx)
2750                                                echo -xarch=sse2a         ;;
2751                     athlon*)                   echo -xarch=pentium_proa  ;;
2752                 esac
2753                 ;;
2754             -std=c99)             echo -xc99              ;;
2755             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2756             -fPIC)                echo -KPIC -xcode=pic32 ;;
2757             -W*,*)                echo $flag              ;;
2758             -f*-*|-W*|-mimpure-text)                      ;;
2759             -shared)              echo -G                 ;;
2760             *)                    echo $flag              ;;
2761         esac
2762     done
2763 }
2764
2765 tms470_flags(){
2766     for flag; do
2767         case $flag in
2768             -march=*|-mcpu=*)
2769                 case "${flag#*=}" in
2770                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2771                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2772                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2773                     armv6*|arm11*)          echo -mv=6   ;;
2774                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2775                                             echo -mv=5e  ;;
2776                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2777                 esac
2778                 ;;
2779             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2780             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2781             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2782             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2783             -msoft-float)   echo --float_support=vfplib       ;;
2784             -O[0-3]|-mf=*)  echo $flag                        ;;
2785             -g)             echo -g -mn                       ;;
2786             -pds=*)         echo $flag                        ;;
2787             -D*|-I*)        echo $flag                        ;;
2788             --gcc|--abi=*)  echo $flag                        ;;
2789             -me)            echo $flag                        ;;
2790         esac
2791     done
2792 }
2793
2794 probe_cc(){
2795     pfx=$1
2796     _cc=$2
2797
2798     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2799     unset _ld_o _ldflags _ld_lib _ld_path
2800     unset _depflags _DEPCMD _DEPFLAGS
2801     _flags_filter=echo
2802
2803     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2804         _type=llvm_gcc
2805         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2806         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2807         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2808         _cflags_speed='-O3'
2809         _cflags_size='-Os'
2810     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2811         _type=gcc
2812         gcc_version=$($_cc --version | head -n1)
2813         gcc_basever=$($_cc -dumpversion)
2814         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2815         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2816         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2817         if ! $_cc -dumpversion | grep -q '^2\.'; then
2818             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2819         fi
2820         _cflags_speed='-O3'
2821         _cflags_size='-Os'
2822     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2823         _type=icc
2824         _ident=$($_cc --version | head -n1)
2825         _depflags='-MMD'
2826         _cflags_speed='-O3'
2827         _cflags_size='-Os'
2828         _cflags_noopt='-O1'
2829     elif $_cc -v 2>&1 | grep -q xlc; then
2830         _type=xlc
2831         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2832         _cflags_speed='-O5'
2833         _cflags_size='-O5 -qcompact'
2834     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2835         _type=ccc
2836         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2837         _DEPFLAGS='-M'
2838         _cflags_speed='-fast'
2839         _cflags_size='-O1'
2840         _flags_filter=ccc_flags
2841     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2842         test -d "$sysroot" || die "No valid sysroot specified."
2843         _type=armcc
2844         _ident=$($_cc --vsn | head -n1)
2845         armcc_conf="$PWD/armcc.conf"
2846         $_cc --arm_linux_configure                 \
2847              --arm_linux_config_file="$armcc_conf" \
2848              --configure_sysroot="$sysroot"        \
2849              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2850              die "Error creating armcc configuration file."
2851         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2852         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2853         as_default="${cross_prefix}gcc"
2854         _depflags='-MMD'
2855         _cflags_speed='-O3'
2856         _cflags_size='-Os'
2857     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2858         _type=tms470
2859         _ident=$($_cc -version | head -n1 | tr -s ' ')
2860         _flags='--gcc --abi=eabi -me'
2861         _cc_e='-ppl -fe=$@'
2862         _cc_o='-fe=$@'
2863         _depflags='-ppa -ppd=$(@:.o=.d)'
2864         _cflags_speed='-O3 -mf=5'
2865         _cflags_size='-O3 -mf=2'
2866         _flags_filter=tms470_flags
2867     elif $_cc -v 2>&1 | grep -q clang; then
2868         _type=clang
2869         _ident=$($_cc --version | head -n1)
2870         _depflags='-MMD'
2871         _cflags_speed='-O3'
2872         _cflags_size='-Os'
2873     elif $_cc -V 2>&1 | grep -q Sun; then
2874         _type=suncc
2875         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2876         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2877         _DEPFLAGS='-xM1 -xc99'
2878         _ldflags='-std=c99'
2879         _cflags_speed='-O5'
2880         _cflags_size='-O5 -xspace'
2881         _flags_filter=suncc_flags
2882     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2883         _type=pathscale
2884         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2885         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2886         _cflags_speed='-O2'
2887         _cflags_size='-Os'
2888         _flags_filter='filter_out -Wdisabled-optimization'
2889     elif $_cc -v 2>&1 | grep -q Open64; then
2890         _type=open64
2891         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2892         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2893         _cflags_speed='-O2'
2894         _cflags_size='-Os'
2895         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2896     elif $_cc -V 2>&1 | grep -q Portland; then
2897         _type=pgi
2898         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2899         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2900         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2901         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2902         _cflags_noopt="-O"
2903         _flags_filter=pgi_flags
2904     elif $_cc 2>&1 | grep -q Microsoft; then
2905         _type=msvc
2906         _ident=$($cc 2>&1 | head -n1)
2907         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2908         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2909         _cflags_speed="-O2"
2910         _cflags_size="-O1"
2911         # Nonstandard output options, to avoid msys path conversion issues.
2912         # Relies on wrapper to remap it.
2913         if $_cc 2>&1 | grep -q Linker; then
2914             _ld_o='-out $@'
2915         else
2916             _ld_o='-Fe$@'
2917         fi
2918         _cc_o='-Fo $@'
2919         _cc_e='-P -Fi $@'
2920         _flags_filter=msvc_flags
2921         _ld_lib='lib%.a'
2922         _ld_path='-libpath:'
2923         _flags='-nologo'
2924         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2925         if [ $pfx = hostcc ]; then
2926             append _cflags -Dsnprintf=_snprintf
2927         fi
2928         disable stripping
2929     elif $_cc 2>&1 | grep -q Intel; then
2930         _type=icl
2931         _ident=$($cc 2>&1 | head -n1)
2932         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2933         # Not only is O3 broken on 13.x+ but it is slower on all previous
2934         # versions (tested) as well.
2935         _cflags_speed="-O2"
2936         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2937         # Nonstandard output options, to avoid msys path conversion issues.
2938         # Relies on wrapper to remap it.
2939         if $_cc 2>&1 | grep -q Linker; then
2940             _ld_o='-out $@'
2941         else
2942             _ld_o='-Fe$@'
2943         fi
2944         _cc_o='-Fo $@'
2945         _cc_e='-P'
2946         _flags_filter=icl_flags
2947         _ld_lib='lib%.a'
2948         _ld_path='-libpath:'
2949         # -Qdiag-error to make icl error when seeing certain unknown arguments
2950         _flags='-nologo -Qdiag-error:4044,10157'
2951         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2952         # with MSVC which enables it by default.
2953         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2954         if [ $pfx = hostcc ]; then
2955             append _cflags -Dsnprintf=_snprintf
2956         fi
2957     fi
2958
2959     eval ${pfx}_type=\$_type
2960     eval ${pfx}_ident=\$_ident
2961 }
2962
2963 set_ccvars(){
2964     eval ${1}_C=\${_cc_c-\${${1}_C}}
2965     eval ${1}_E=\${_cc_e-\${${1}_E}}
2966     eval ${1}_O=\${_cc_o-\${${1}_O}}
2967
2968     if [ -n "$_depflags" ]; then
2969         eval ${1}_DEPFLAGS=\$_depflags
2970     else
2971         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2972         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2973         eval DEP${1}FLAGS=\$_flags
2974     fi
2975 }
2976
2977 probe_cc cc "$cc"
2978 cflags_filter=$_flags_filter
2979 cflags_speed=$_cflags_speed
2980 cflags_size=$_cflags_size
2981 cflags_noopt=$_cflags_noopt
2982 add_cflags $_flags $_cflags
2983 cc_ldflags=$_ldflags
2984 set_ccvars CC
2985
2986 probe_cc hostcc "$host_cc"
2987 host_cflags_filter=$_flags_filter
2988 add_host_cflags  $_flags $_cflags
2989 set_ccvars HOSTCC
2990
2991 test -n "$cc_type" && enable $cc_type ||
2992     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2993
2994 : ${as_default:=$cc}
2995 : ${dep_cc_default:=$cc}
2996 : ${ld_default:=$cc}
2997 : ${host_ld_default:=$host_cc}
2998 set_default ar as dep_cc ld host_ld
2999
3000 probe_cc as "$as"
3001 asflags_filter=$_flags_filter
3002 add_asflags $_flags $_cflags
3003 set_ccvars AS
3004
3005 probe_cc ld "$ld"
3006 ldflags_filter=$_flags_filter
3007 add_ldflags $_flags $_ldflags
3008 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3009 LD_O=${_ld_o-$LD_O}
3010 LD_LIB=${_ld_lib-$LD_LIB}
3011 LD_PATH=${_ld_path-$LD_PATH}
3012
3013 probe_cc hostld "$host_ld"
3014 host_ldflags_filter=$_flags_filter
3015 add_host_ldflags $_flags $_ldflags
3016 HOSTLD_O=${_ld_o-$HOSTLD_O}
3017
3018 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3019     probe_cc depcc "$dep_cc"
3020     CCDEP=${_DEPCMD:-$DEPCMD}
3021     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3022     DEPCCFLAGS=$_flags
3023 fi
3024
3025 if $ar 2>&1 | grep -q Microsoft; then
3026     arflags="-nologo"
3027     ar_o='-out:$@'
3028 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3029     arflags="rq"
3030     ar_o='$@'
3031 else
3032     arflags="rc"
3033     ar_o='$@'
3034 fi
3035
3036 add_cflags $extra_cflags
3037 add_cxxflags $extra_cxxflags
3038 add_asflags $extra_cflags
3039
3040 if test -n "$sysroot"; then
3041     case "$cc_type" in
3042         gcc|llvm_gcc|clang)
3043             add_cppflags --sysroot="$sysroot"
3044             add_ldflags --sysroot="$sysroot"
3045         ;;
3046         tms470)
3047             add_cppflags -I"$sysinclude"
3048             add_ldflags  --sysroot="$sysroot"
3049         ;;
3050     esac
3051 fi
3052
3053 if test "$cpu" = host; then
3054     enabled cross_compile &&
3055         die "--cpu=host makes no sense when cross-compiling."
3056
3057     case "$cc_type" in
3058         gcc|llvm_gcc)
3059             check_native(){
3060                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3061                 sed -n "/cc1.*$1=/{
3062                             s/.*$1=\\([^ ]*\\).*/\\1/
3063                             p
3064                             q
3065                         }" $TMPE
3066             }
3067             cpu=$(check_native -march || check_native -mcpu)
3068         ;;
3069     esac
3070
3071     test "${cpu:-host}" = host &&
3072         die "--cpu=host not supported with compiler $cc"
3073 fi
3074
3075 # Deal with common $arch aliases
3076 case "$arch" in
3077     aarch64|arm64)
3078         arch="aarch64"
3079     ;;
3080     arm*|iPad*)
3081         arch="arm"
3082     ;;
3083     mips*|IP*)
3084         arch="mips"
3085     ;;
3086     parisc*|hppa*)
3087         arch="parisc"
3088     ;;
3089     "Power Macintosh"|ppc*|powerpc*)
3090         arch="ppc"
3091     ;;
3092     s390|s390x)
3093         arch="s390"
3094     ;;
3095     sh4|sh)
3096         arch="sh4"
3097     ;;
3098     sun4u|sparc*)
3099         arch="sparc"
3100     ;;
3101     tilegx|tile-gx)
3102         arch="tilegx"
3103     ;;
3104     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3105         arch="x86"
3106     ;;
3107 esac
3108
3109 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3110 enable $arch
3111
3112 # Add processor-specific flags
3113 if enabled aarch64; then
3114
3115     case $cpu in
3116         armv*)
3117             cpuflags="-march=$cpu"
3118         ;;
3119         *)
3120             cpuflags="-mcpu=$cpu"
3121         ;;
3122     esac
3123
3124 elif enabled alpha; then
3125
3126     cpuflags="-mcpu=$cpu"
3127
3128 elif enabled arm; then
3129
3130     check_arm_arch() {
3131         check_cpp_condition stddef.h \
3132             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3133             $cpuflags
3134     }
3135
3136     probe_arm_arch() {
3137         if   check_arm_arch 4;        then echo armv4;
3138         elif check_arm_arch 4T;       then echo armv4t;
3139         elif check_arm_arch 5;        then echo armv5;
3140         elif check_arm_arch 5E;       then echo armv5e;
3141         elif check_arm_arch 5T;       then echo armv5t;
3142         elif check_arm_arch 5TE;      then echo armv5te;
3143         elif check_arm_arch 5TEJ;     then echo armv5te;
3144         elif check_arm_arch 6;        then echo armv6;
3145         elif check_arm_arch 6J;       then echo armv6j;
3146         elif check_arm_arch 6K;       then echo armv6k;
3147         elif check_arm_arch 6Z;       then echo armv6z;
3148         elif check_arm_arch 6ZK;      then echo armv6zk;
3149         elif check_arm_arch 6T2;      then echo armv6t2;
3150         elif check_arm_arch 7;        then echo armv7;
3151         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3152         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3153         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3154         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3155         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3156         fi
3157     }
3158
3159     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3160
3161     case $cpu in
3162         armv*)
3163             cpuflags="-march=$cpu"
3164             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3165         ;;
3166         *)
3167             cpuflags="-mcpu=$cpu"
3168             case $cpu in
3169                 cortex-a*)                               subarch=armv7a  ;;
3170                 cortex-r*)                               subarch=armv7r  ;;
3171                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3172                 arm11*)                                  subarch=armv6   ;;
3173                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3174                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3175                 *)                             subarch=$(probe_arm_arch) ;;
3176             esac
3177         ;;
3178     esac
3179
3180     case "$subarch" in
3181         armv5t*)    enable fast_clz                ;;
3182         armv[6-8]*) enable fast_clz fast_unaligned ;;
3183     esac
3184
3185 elif enabled avr32; then
3186
3187     case $cpu in
3188         ap7[02]0[0-2])
3189             subarch="avr32_ap"
3190             cpuflags="-mpart=$cpu"
3191         ;;
3192         ap)
3193             subarch="avr32_ap"
3194             cpuflags="-march=$cpu"
3195         ;;
3196         uc3[ab]*)
3197             subarch="avr32_uc"
3198             cpuflags="-mcpu=$cpu"
3199         ;;
3200         uc)
3201             subarch="avr32_uc"
3202             cpuflags="-march=$cpu"
3203         ;;
3204     esac
3205
3206 elif enabled bfin; then
3207
3208     cpuflags="-mcpu=$cpu"
3209
3210 elif enabled mips; then
3211
3212     cpuflags="-march=$cpu"
3213
3214     case $cpu in
3215         24kc)
3216             disable mipsfpu
3217             disable mipsdspr1
3218             disable mipsdspr2
3219         ;;
3220         24kf*)
3221             disable mipsdspr1
3222             disable mipsdspr2
3223         ;;
3224         24kec|34kc|1004kc)
3225             disable mipsfpu
3226             disable mipsdspr2
3227         ;;
3228         24kef*|34kf*|1004kf*)
3229             disable mipsdspr2
3230         ;;
3231         74kc)
3232             disable mipsfpu
3233         ;;
3234     esac
3235
3236 elif enabled ppc; then
3237
3238     case $(tolower $cpu) in
3239         601|ppc601|powerpc601)
3240             cpuflags="-mcpu=601"
3241             disable altivec
3242         ;;
3243         603*|ppc603*|powerpc603*)
3244             cpuflags="-mcpu=603"
3245             disable altivec
3246         ;;
3247         604*|ppc604*|powerpc604*)
3248             cpuflags="-mcpu=604"
3249             disable altivec
3250         ;;
3251         g3|75*|ppc75*|powerpc75*)
3252             cpuflags="-mcpu=750"
3253             disable altivec
3254         ;;
3255         g4|745*|ppc745*|powerpc745*)
3256             cpuflags="-mcpu=7450"
3257         ;;
3258         74*|ppc74*|powerpc74*)
3259             cpuflags="-mcpu=7400"
3260         ;;
3261         g5|970|ppc970|powerpc970)
3262             cpuflags="-mcpu=970"
3263         ;;
3264         power[3-7]*)
3265             cpuflags="-mcpu=$cpu"
3266         ;;
3267         cell)
3268             cpuflags="-mcpu=cell"
3269             enable ldbrx
3270         ;;
3271         e500mc)
3272             cpuflags="-mcpu=e500mc"
3273             disable altivec
3274         ;;
3275         e500v2)
3276             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3277             disable altivec
3278         ;;
3279         e500)
3280             cpuflags="-mcpu=8540 -mhard-float"
3281             disable altivec
3282         ;;
3283     esac
3284
3285 elif enabled sparc; then
3286
3287     case $cpu in
3288         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3289             cpuflags="-mcpu=$cpu"
3290             disable vis
3291         ;;
3292         ultrasparc*|niagara[234])
3293             cpuflags="-mcpu=$cpu"
3294         ;;
3295     esac
3296
3297 elif enabled x86; then
3298
3299     case $cpu in
3300         i[345]86|pentium)
3301             cpuflags="-march=$cpu"
3302             disable mmx
3303         ;;
3304         # targets that do NOT support nopl and conditional mov (cmov)
3305         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3306             cpuflags="-march=$cpu"
3307             disable i686
3308         ;;
3309         # targets that do support nopl and conditional mov (cmov)
3310         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3311             cpuflags="-march=$cpu"
3312             enable i686
3313             enable fast_cmov
3314         ;;
3315         # targets that do support conditional mov but on which it's slow
3316         pentium4|pentium4m|prescott|nocona)
3317             cpuflags="-march=$cpu"
3318             enable i686
3319             disable fast_cmov
3320         ;;
3321     esac
3322
3323 fi
3324
3325 if [ "$cpu" != generic ]; then
3326     add_cflags  $cpuflags
3327     add_asflags $cpuflags
3328 fi
3329
3330 # compiler sanity check
3331 check_exec <<EOF
3332 int main(void){ return 0; }
3333 EOF
3334 if test "$?" != 0; then
3335     echo "$cc is unable to create an executable file."
3336     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3337         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3338         echo "Only do this if you know what cross compiling means."
3339     fi
3340     die "C compiler test failed."
3341 fi
3342
3343 add_cppflags -D_ISOC99_SOURCE
3344 add_cxxflags -D__STDC_CONSTANT_MACROS
3345 check_cflags -std=c99
3346 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3347 #include <stdlib.h>
3348 EOF
3349 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3350 #include <stdlib.h>
3351 EOF
3352
3353 check_host_cflags -std=c99
3354 check_host_cflags -Wall
3355
3356 check_64bit(){
3357     arch32=$1
3358     arch64=$2
3359     expr=$3
3360     check_code cc "" "int test[2*($expr) - 1]" &&
3361         subarch=$arch64 || subarch=$arch32
3362 }
3363
3364 case "$arch" in
3365     aarch64|alpha|ia64)
3366         spic=$shared
3367     ;;
3368     mips)
3369         check_64bit mips mips64 '_MIPS_SIM > 1'
3370         spic=$shared
3371     ;;
3372     parisc)
3373         check_64bit parisc parisc64 'sizeof(void *) > 4'
3374         spic=$shared
3375     ;;
3376     ppc)
3377         check_64bit ppc ppc64 'sizeof(void *) > 4'
3378         spic=$shared
3379     ;;
3380     sparc)
3381         check_64bit sparc sparc64 'sizeof(void *) > 4'
3382         spic=$shared
3383     ;;
3384     x86)
3385         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3386         if test "$subarch" = "x86_64"; then
3387             spic=$shared
3388         fi
3389     ;;
3390     ppc)
3391         check_cc <<EOF && subarch="ppc64"
3392         int test[(int)sizeof(char*) - 7];
3393 EOF
3394     ;;
3395 esac
3396
3397 enable $subarch
3398 enabled spic && enable_weak pic
3399
3400 # OS specific
3401 case $target_os in
3402     aix)
3403         ;;
3404     haiku)
3405         prefix_default="/boot/common"
3406         network_extralibs="-lnetwork"
3407         host_libs=
3408         ;;
3409     sunos)
3410         FFSERVERLDFLAGS=""
3411         SHFLAGS='-shared -Wl,-h,$$(@F)'
3412         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3413         network_extralibs="-lsocket -lnsl"
3414         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3415         # When using suncc to build, the Solaris linker will mark
3416         # an executable with each instruction set encountered by
3417         # the Solaris assembler.  As our libraries contain their own
3418         # guards for processor-specific code, instead suppress
3419         # generation of the HWCAPS ELF section on Solaris x86 only.
3420         enabled_all suncc x86 &&
3421             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3422             add_ldflags -Wl,-M,mapfile
3423         nm_default='nm -P -g'
3424         ;;
3425     netbsd)
3426         disable symver
3427         oss_indev_extralibs="-lossaudio"
3428         oss_outdev_extralibs="-lossaudio"
3429         enabled gcc || check_ldflags -Wl,-zmuldefs
3430         ;;
3431     openbsd|bitrig)
3432         disable symver
3433         SHFLAGS='-shared'
3434         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3435         SLIB_INSTALL_LINKS=
3436         oss_indev_extralibs="-lossaudio"
3437         oss_outdev_extralibs="-lossaudio"
3438         ;;
3439     dragonfly)
3440         disable symver
3441         ;;
3442     freebsd)
3443         ;;
3444     bsd/os)
3445         add_extralibs -lpoll -lgnugetopt
3446         strip="strip -d"
3447         ;;
3448     darwin)
3449         gas="gas-preprocessor.pl $cc"
3450         enabled ppc && add_asflags -force_cpusubtype_ALL
3451         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3452         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3453         strip="${strip} -x"
3454         add_ldflags -Wl,-dynamic,-search_paths_first
3455         SLIBSUF=".dylib"
3456         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3457         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3458         FFSERVERLDFLAGS=-Wl,-bind_at_load
3459         objformat="macho"
3460         enabled x86_64 && objformat="macho64"
3461         enabled_any pic shared ||
3462             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3463         ;;
3464     mingw32*)
3465         if test $target_os = "mingw32ce"; then
3466             disable network
3467         else
3468             target_os=mingw32
3469         fi
3470         LIBTARGET=i386
3471         if enabled x86_64; then
3472             LIBTARGET="i386:x86-64"
3473         elif enabled arm; then
3474             LIBTARGET=arm-wince
3475         fi
3476         check_ldflags -Wl,--nxcompat
3477         check_ldflags -Wl,--dynamicbase
3478         shlibdir_default="$bindir_default"
3479         SLIBPREF=""
3480         SLIBSUF=".dll"
3481         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3482         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3483         dlltool="${cross_prefix}dlltool"
3484         if check_cmd lib.exe -list; then
3485             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3486             if enabled x86_64; then
3487                 LIBTARGET=x64
3488             fi
3489         elif check_cmd $dlltool --version; then
3490             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3491         fi
3492         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3493         SLIB_INSTALL_LINKS=
3494         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3495         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3496         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3497         objformat="win32"
3498         ranlib=:
3499         enable dos_paths
3500         ;;
3501     win32|win64)
3502         if enabled shared; then
3503             # Link to the import library instead of the normal static library
3504             # for shared libs.
3505             LD_LIB='%.lib'
3506             # Cannot build shared and static libs at the same time with MSVC.
3507             disable static
3508         fi
3509         shlibdir_default="$bindir_default"
3510         SLIBPREF=""
3511         SLIBSUF=".dll"
3512         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3513         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3514         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3515         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3516         SLIB_INSTALL_LINKS=
3517         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3518         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3519         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3520         objformat="win32"
3521         ranlib=:
3522         enable dos_paths
3523         ;;
3524     cygwin*)
3525         target_os=cygwin
3526         shlibdir_default="$bindir_default"
3527         SLIBPREF="cyg"
3528         SLIBSUF=".dll"
3529         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3530         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3531         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3532         SLIB_INSTALL_LINKS=
3533         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3534         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3535         objformat="win32"
3536         enable dos_paths
3537         ;;
3538     *-dos|freedos|opendos)
3539         network_extralibs="-lsocket"
3540         objformat="coff"
3541         enable dos_paths
3542         add_cppflags -U__STRICT_ANSI__
3543         ;;
3544     linux)
3545         enable dv1394
3546         ;;
3547     irix*)
3548         target_os=irix
3549         ranlib="echo ignoring ranlib"
3550         ;;
3551     os/2*)
3552         strip="lxlite -CS"
3553         ln_s="cp -f"
3554         objformat="aout"
3555         add_cppflags -D_GNU_SOURCE
3556         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3557         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3558         FFSERVERLDFLAGS=""
3559         LIBSUF="_s.a"
3560         SLIBPREF=""
3561         SLIBSUF=".dll"
3562         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3563         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3564         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3565             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3566             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3567             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3568             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3569             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3570         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3571             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3572         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3573         enable dos_paths
3574         enable_weak os2threads
3575         ;;
3576     gnu/kfreebsd)
3577         add_cppflags -D_BSD_SOURCE
3578         ;;
3579     gnu)
3580         ;;
3581     qnx)
3582         add_cppflags -D_QNX_SOURCE
3583         network_extralibs="-lsocket"
3584         ;;
3585     symbian)
3586         SLIBSUF=".dll"
3587         enable dos_paths
3588         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3589         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3590         add_ldflags -Wl,--target1-abs,--no-undefined \
3591                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3592                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3593         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3594                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3595                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3596         ;;
3597     osf1)
3598         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3599         FFSERVERLDFLAGS=
3600         ;;
3601     minix)
3602         ;;
3603     plan9)
3604         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3605                      -D_REENTRANT_SOURCE        \
3606                      -D_RESEARCH_SOURCE         \
3607                      -DFD_SETSIZE=96            \
3608                      -DHAVE_SOCK_OPTS
3609         add_compat strtod.o strtod=avpriv_strtod
3610         network_extralibs='-lbsd'
3611         exeobjs=compat/plan9/main.o
3612         disable ffserver
3613         cp_f='cp'
3614         ;;
3615     none)
3616         ;;
3617     *)
3618         die "Unknown OS '$target_os'."
3619         ;;
3620 esac
3621
3622 # determine libc flavour
3623
3624 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3625 if check_cpp_condition features.h "defined __UCLIBC__"; then
3626     libc_type=uclibc
3627     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3628 elif check_cpp_condition features.h "defined __GLIBC__"; then
3629     libc_type=glibc
3630     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3631 # MinGW headers can be installed on Cygwin, so check for newlib first.
3632 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3633     libc_type=newlib
3634     add_cppflags -U__STRICT_ANSI__
3635 elif check_header _mingw.h; then
3636     libc_type=mingw
3637     check_cpp_condition _mingw.h \
3638         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3639             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3640         die "ERROR: MinGW runtime version must be >= 3.15."
3641     add_cppflags -U__STRICT_ANSI__
3642     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3643             __MINGW64_VERSION_MAJOR < 3"; then
3644         add_compat msvcrt/snprintf.o
3645         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3646     else
3647         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3648     fi
3649 elif check_func_headers stdlib.h _get_doserrno; then
3650     libc_type=msvcrt
3651     add_compat strtod.o strtod=avpriv_strtod
3652     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3653                                  _snprintf=avpriv_snprintf  \
3654                                  vsnprintf=avpriv_vsnprintf
3655     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3656     # 0x601 by default unless something else is set by the user.
3657     # This can easily lead to us detecting functions only present
3658     # in such new versions and producing binaries requiring windows 7.0.
3659     # Therefore explicitly set the default to XP unless the user has
3660     # set something else on the command line.
3661     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3662 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3663     libc_type=klibc
3664 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3665     libc_type=bionic
3666     add_compat strtod.o strtod=avpriv_strtod
3667 fi
3668
3669 test -n "$libc_type" && enable $libc_type
3670
3671 # hacks for compiler/libc/os combinations
3672
3673 if enabled_all tms470 glibc; then
3674     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3675     add_cppflags -D__USER_LABEL_PREFIX__=
3676     add_cppflags -D__builtin_memset=memset
3677     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3678     add_cflags   -pds=48    # incompatible redefinition of macro
3679 fi
3680
3681 if enabled_all ccc glibc; then
3682     add_ldflags -Wl,-z,now  # calls to libots crash without this
3683 fi
3684
3685 esc(){
3686     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3687 }
3688
3689 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3690
3691 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3692
3693 set_default $PATHS_LIST
3694 set_default nm
3695
3696 # we need to build at least one lib type
3697 if ! enabled_any static shared; then
3698     cat <<EOF
3699 At least one library type must be built.
3700 Specify --enable-static to build the static libraries or --enable-shared to
3701 build the shared libraries as well. To only build the shared libraries specify
3702 --disable-static in addition to --enable-shared.
3703 EOF
3704     exit 1;
3705 fi
3706
3707 # backward compatibility layer for incompatible_libav/fork_abi
3708 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3709 enabled incompatible_libav_abi && enable incompatible_fork_abi
3710
3711 die_license_disabled() {
3712     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3713 }
3714
3715 die_license_disabled_gpl() {
3716     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3717 }
3718
3719 die_license_disabled gpl frei0r
3720 die_license_disabled gpl libcdio
3721 die_license_disabled gpl libutvideo
3722 die_license_disabled gpl libvidstab
3723 die_license_disabled gpl libx264
3724 die_license_disabled gpl libxavs
3725 die_license_disabled gpl libxvid
3726 die_license_disabled gpl x11grab
3727
3728 die_license_disabled nonfree libaacplus
3729 die_license_disabled nonfree libfaac
3730 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3731 enabled gpl && die_license_disabled_gpl nonfree openssl
3732
3733 die_license_disabled version3 libopencore_amrnb
3734 die_license_disabled version3 libopencore_amrwb
3735 die_license_disabled version3 libvo_aacenc
3736 die_license_disabled version3 libvo_amrwbenc
3737
3738 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3739
3740 disabled optimizations || check_cflags -fomit-frame-pointer
3741
3742 enable_weak_pic() {
3743     disabled pic && return
3744     enable pic
3745     add_cppflags -DPIC
3746     case "$target_os" in
3747     mingw*|cygwin*)
3748         ;;
3749     *)
3750         add_cflags -fPIC
3751         ;;
3752     esac
3753     add_asflags  -fPIC
3754 }
3755
3756 enabled pic && enable_weak_pic
3757
3758 check_cc <<EOF || die "Symbol mangling check failed."
3759 int ff_extern;
3760 EOF
3761 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3762 extern_prefix=${sym%%ff_extern*}
3763
3764 check_cc <<EOF && enable_weak inline_asm
3765 void foo(void) { __asm__ volatile ("" ::); }
3766 EOF
3767
3768 _restrict=
3769 for restrict_keyword in restrict __restrict__ __restrict; do
3770     check_cc <<EOF && _restrict=$restrict_keyword && break
3771 void foo(char * $restrict_keyword p);
3772 EOF
3773 done
3774
3775 check_cc <<EOF && enable attribute_packed
3776 struct { int x; } __attribute__((packed)) x;
3777 EOF
3778
3779 check_cc <<EOF && enable attribute_may_alias
3780 union { int x; } __attribute__((may_alias)) x;
3781 EOF
3782
3783 check_cc <<EOF || die "endian test failed"
3784 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3785 EOF
3786 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3787
3788 if enabled alpha; then
3789
3790     check_cflags -mieee
3791
3792 elif enabled arm; then
3793
3794     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3795 float func(float a, float b){ return a+b; }
3796 EOF
3797
3798     enabled thumb && check_cflags -mthumb || check_cflags -marm
3799     nogas=die
3800
3801     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3802         enable vfp_args
3803     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3804         case "${cross_prefix:-$cc}" in
3805             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3806             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3807 __asm__ (".eabi_attribute 28, 1");
3808 int main(void) { return 0; }
3809 EOF
3810         esac
3811         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3812     fi
3813
3814     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3815     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3816     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3817     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3818     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3819     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3820
3821     [ $target_os = linux ] ||
3822         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3823             $ARCH_EXT_LIST_ARM
3824
3825     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3826     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3827
3828     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3829
3830 elif enabled mips; then
3831
3832     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3833     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3834      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3835     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3836      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3837     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3838      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3839     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3840      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3841
3842 elif enabled parisc; then
3843
3844     if enabled gcc; then
3845         case $($cc -dumpversion) in
3846             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3847         esac
3848     fi
3849
3850 elif enabled ppc; then
3851
3852     enable local_aligned_8 local_aligned_16
3853
3854     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3855     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3856     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3857     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3858
3859     # AltiVec flags: The FSF version of GCC differs from the Apple version
3860     if enabled altivec; then
3861         nogas=warn
3862         check_cflags -maltivec -mabi=altivec &&
3863         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3864         check_cflags -faltivec
3865
3866         # check if our compiler supports Motorola AltiVec C API
3867         check_cc <<EOF || disable altivec
3868 $inc_altivec_h
3869 int main(void) {
3870     vector signed int v1 = (vector signed int) { 0 };
3871     vector signed int v2 = (vector signed int) { 1 };
3872     v1 = vec_add(v1, v2);
3873     return 0;
3874 }
3875 EOF
3876
3877         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3878     fi
3879
3880 elif enabled sparc; then
3881
3882     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3883
3884 elif enabled x86; then
3885
3886     check_builtin rdtsc    intrin.h   "__rdtsc()"
3887     check_builtin mm_empty mmintrin.h "_mm_empty()"
3888
3889     enable local_aligned_8 local_aligned_16
3890
3891     # check whether EBP is available on x86
3892     # As 'i' is stored on the stack, this program will crash
3893     # if the base pointer is used to access it because the
3894     # base pointer is cleared in the inline assembly code.
3895     check_exec_crash <<EOF && enable ebp_available
3896 volatile int i=0;
3897 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3898 return i;
3899 EOF
3900
3901     # check whether EBX is available on x86
3902     check_inline_asm ebx_available '""::"b"(0)' &&
3903         check_inline_asm ebx_available '"":::"%ebx"'
3904
3905     # check whether xmm clobbers are supported
3906     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3907
3908     # check whether binutils is new enough to compile SSSE3/MMXEXT
3909     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3910     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3911
3912     if ! disabled_any asm mmx yasm; then
3913         if check_cmd $yasmexe --version; then
3914             enabled x86_64 && yasm_extra="-m amd64"
3915             yasm_debug="-g dwarf2"
3916         elif check_cmd nasm -v; then
3917             yasmexe=nasm
3918             yasm_debug="-g -F dwarf"
3919             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3920         fi
3921
3922         YASMFLAGS="-f $objformat $yasm_extra"
3923         enabled pic               && append YASMFLAGS "-DPIC"
3924         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3925         case "$objformat" in
3926             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3927         esac
3928
3929         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3930             die "yasm not found, use --disable-yasm for a crippled build"
3931         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external
3932         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3933         check_yasm "CPU amdnop" && enabled i686 && enable cpunop
3934     fi
3935
3936     case "$cpu" in
3937         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3938             disable fast_clz
3939         ;;
3940     esac
3941
3942 fi
3943
3944 if enabled asm; then
3945     as=${gas:=$as}
3946     check_as <<EOF && enable gnu_as || \
3947         $nogas "GNU assembler not found, install gas-preprocessor"
3948 .macro m n
3949 \n: .int 0
3950 .endm
3951 m x
3952 EOF
3953 fi
3954
3955 check_ldflags -Wl,--as-needed
3956
3957 if check_func dlopen; then
3958     ldl=
3959 elif check_func dlopen -ldl; then
3960     ldl=-ldl
3961 fi
3962
3963 if ! disabled network; then
3964     check_type "sys/types.h sys/socket.h" socklen_t
3965     check_type netdb.h "struct addrinfo"
3966     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3967     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3968     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3969     check_type netinet/in.h "struct sockaddr_in6"
3970     check_type poll.h "struct pollfd"
3971     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3972     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3973     check_type netinet/sctp.h "struct sctp_event_subscribe"
3974     check_func getaddrinfo $network_extralibs
3975     check_func getservbyport $network_extralibs
3976     # Prefer arpa/inet.h over winsock2
3977     if check_header arpa/inet.h ; then
3978         check_func closesocket
3979     elif check_header winsock2.h ; then
3980         check_func_headers winsock2.h closesocket -lws2 &&
3981             network_extralibs="-lws2" ||
3982         { check_func_headers winsock2.h closesocket -lws2_32 &&
3983             network_extralibs="-lws2_32"; }
3984         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3985         check_type ws2tcpip.h socklen_t
3986         check_type ws2tcpip.h "struct addrinfo"
3987         check_type ws2tcpip.h "struct group_source_req"
3988         check_type ws2tcpip.h "struct ip_mreq_source"
3989         check_type ws2tcpip.h "struct ipv6_mreq"
3990         check_type winsock2.h "struct pollfd"
3991         check_type ws2tcpip.h "struct sockaddr_in6"
3992         check_type ws2tcpip.h "struct sockaddr_storage"
3993         check_struct winsock2.h "struct sockaddr" sa_len
3994     else
3995         disable network
3996     fi
3997 fi
3998
3999 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4000 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4001
4002 check_func  access
4003 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4004 check_func  fcntl
4005 check_func  fork
4006 check_func_headers stdlib.h getenv
4007 check_func  gethrtime
4008 check_func  getopt
4009 check_func  getrusage
4010 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4011 check_func  gettimeofday
4012 check_func  inet_aton $network_extralibs
4013 check_func  isatty
4014 check_func  localtime_r
4015 check_func  ${malloc_prefix}memalign            && enable memalign
4016 check_func  mkstemp
4017 check_func  mmap
4018 check_func  mprotect
4019 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4020 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4021 check_func  setrlimit
4022 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4023 check_func  strerror_r
4024 check_func  sched_getaffinity
4025 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4026 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4027 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4028 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4029 check_func  sysconf
4030 check_func  sysctl
4031 check_func  usleep
4032 check_func_headers conio.h kbhit
4033 check_func_headers windows.h PeekNamedPipe
4034 check_func_headers io.h setmode
4035 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4036 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4037 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4038 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4039 check_func_headers windows.h GetProcessAffinityMask
4040 check_func_headers windows.h GetProcessTimes
4041 check_func_headers windows.h GetSystemTimeAsFileTime
4042 check_func_headers windows.h MapViewOfFile
4043 check_func_headers windows.h SetConsoleTextAttribute
4044 check_func_headers windows.h Sleep
4045 check_func_headers windows.h VirtualAlloc
4046 check_func_headers glob.h glob
4047 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4048
4049 check_header cl/cl.h
4050 check_header direct.h
4051 check_header dlfcn.h
4052 check_header dxva.h
4053 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4054 check_header io.h
4055 check_header libcrystalhd/libcrystalhd_if.h
4056 check_header malloc.h
4057 check_header poll.h
4058 check_header sys/mman.h
4059 check_header sys/param.h
4060 check_header sys/resource.h
4061 check_header sys/select.h
4062 check_header sys/time.h
4063 check_header termios.h
4064 check_header unistd.h
4065 check_header vdpau/vdpau.h
4066 check_header vdpau/vdpau_x11.h
4067 check_header VideoDecodeAcceleration/VDADecoder.h
4068 check_header windows.h
4069 check_header X11/extensions/XvMClib.h
4070 check_header asm/types.h
4071
4072 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4073 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4074
4075 if ! disabled w32threads && ! enabled pthreads; then
4076     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
4077 fi
4078
4079 # check for some common methods of building with pthread support
4080 # do this before the optional library checks as some of them require pthreads
4081 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4082     enable pthreads
4083     if check_func pthread_create; then
4084         :
4085     elif check_func pthread_create -pthread; then
4086         add_cflags -pthread
4087         add_extralibs -pthread
4088     elif check_func pthread_create -pthreads; then
4089         add_cflags -pthreads
4090         add_extralibs -pthreads
4091     elif check_func pthread_create -lpthreadGC2; then
4092         add_extralibs -lpthreadGC2
4093     elif ! check_lib pthread.h pthread_create -lpthread; then
4094         disable pthreads
4095     fi
4096 fi
4097
4098 for thread in $THREADS_LIST; do
4099     if enabled $thread; then
4100         test -n "$thread_type" &&
4101             die "ERROR: Only one thread type must be selected." ||
4102             thread_type="$thread"
4103     fi
4104 done
4105
4106 if enabled pthreads; then
4107   check_func pthread_cancel
4108 fi
4109
4110 enabled sync_val_compare_and_swap && enable atomics_gcc
4111 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
4112 enabled MemoryBarrier && enable atomics_win32
4113
4114 check_lib math.h sin -lm && LIBM="-lm"
4115 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4116
4117 atan2f_args=2
4118 ldexpf_args=2
4119 powf_args=2
4120
4121 for func in $MATH_FUNCS; do
4122     eval check_mathfunc $func \${${func}_args:-1}
4123 done
4124
4125 # these are off by default, so fail if requested and not available
4126 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4127                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4128                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4129 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4130 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4131 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4132 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4133 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4134 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4135 enabled libbluray         && require libbluray libbluray/bluray.h bd_open -lbluray
4136 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4137                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4138                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4139 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4140 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4141 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4142 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"
4143 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4144 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
4145 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme
4146 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4147                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4148                                done || die "ERROR: libgsm not found"; }
4149 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4150 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4151 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4152 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4153 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4154 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4155 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4156 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4157                                check_lib openjpeg.h opj_version -lopenjpeg ||
4158                                die "ERROR: libopenjpeg not found"; }
4159 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4160 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4161 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4162 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4163 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4164 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_frame
4165 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4166 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4167 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4168     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4169     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4170 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4171 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4172                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4173                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4174 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4175 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4176 enabled libvidstab        && require_pkg_config vidstab vid.stab/libvidstab.h vsMotionDetectInit
4177 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4178 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4179 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4180 enabled libvpx            && {
4181     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4182                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4183     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 ||
4184                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4185     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4186     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4187 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4188 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4189                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4190                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4191 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4192 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4193 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4194 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4195                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4196                                die "ERROR: openal not found"; } &&
4197                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4198                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4199 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4200                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4201                                die "ERROR: opencl not found"; } &&
4202                              { enabled_any w32threads os2threads &&
4203                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4204                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4205                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4206                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4207 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4208                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4209                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4210                                die "ERROR: openssl not found"; }
4211
4212 if enabled gnutls; then
4213     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4214     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4215 fi
4216
4217 # libdc1394 check
4218 if enabled libdc1394; then
4219     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4220         enable libdc1394_2; } ||
4221     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4222         enable libdc1394_1; } ||
4223     die "ERROR: No version of libdc1394 found "
4224 fi
4225
4226 SDL_CONFIG="${cross_prefix}sdl-config"
4227 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4228     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4229     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4230     enable sdl
4231 else
4232   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4233     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4234     sdl_libs=$("${SDL_CONFIG}" --libs)
4235     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4236     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4237     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4238     enable sdl
4239   fi
4240 fi
4241 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4242
4243 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4244 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4245 perl --version > /dev/null 2>&1 && enable perl || disable perl
4246 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
4247 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4248
4249 check_header linux/fb.h
4250 check_header linux/videodev.h
4251 check_header linux/videodev2.h
4252 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4253
4254 check_header sys/videoio.h
4255
4256 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4257 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4258 # w32api 3.12 had it defined wrong
4259 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4260
4261 check_type "dshow.h" IBaseFilter
4262
4263 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4264 { check_header dev/bktr/ioctl_meteor.h &&
4265   check_header dev/bktr/ioctl_bt848.h; } ||
4266 { check_header machine/ioctl_meteor.h &&
4267   check_header machine/ioctl_bt848.h; } ||
4268 { check_header dev/video/meteor/ioctl_meteor.h &&
4269   check_header dev/video/bktr/ioctl_bt848.h; } ||
4270 check_header dev/ic/bt8xx.h
4271
4272 check_header sndio.h
4273 if check_struct sys/soundcard.h audio_buf_info bytes; then
4274     enable_safe sys/soundcard.h
4275 else
4276     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4277     #include <sys/soundcard.h>
4278     audio_buf_info abc;
4279 EOF
4280 fi
4281 check_header soundcard.h
4282
4283 enabled_any alsa_indev alsa_outdev &&
4284     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4285
4286 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4287     check_func jack_port_get_latency_range -ljack
4288
4289 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4290
4291 if enabled libcdio; then
4292     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4293     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4294     die "ERROR: libcdio-paranoia not found"
4295 fi
4296
4297 enabled x11grab                                           &&
4298 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
4299 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4300 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4301
4302 enabled vaapi &&
4303     check_lib va/va.h vaInitialize -lva ||
4304     disable vaapi
4305
4306 enabled vdpau &&
4307     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4308     disable vdpau
4309
4310 # Funny iconv installations are not unusual, so check it after all flags have been set
4311 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4312
4313 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4314
4315 # add some useful compiler flags if supported
4316 check_cflags -Wdeclaration-after-statement
4317 check_cflags -Wall
4318 check_cflags -Wno-parentheses
4319 check_cflags -Wno-switch
4320 check_cflags -Wno-format-zero-length
4321 check_cflags -Wdisabled-optimization
4322 check_cflags -Wpointer-arith
4323 check_cflags -Wredundant-decls
4324 check_cflags -Wno-pointer-sign
4325 check_cflags -Wwrite-strings
4326 check_cflags -Wtype-limits
4327 check_cflags -Wundef
4328 check_cflags -Wmissing-prototypes
4329 check_cflags -Wno-pointer-to-int-cast
4330 check_cflags -Wstrict-prototypes
4331 enabled extra_warnings && check_cflags -Winline
4332
4333 # add some linker flags
4334 check_ldflags -Wl,--warn-common
4335 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4336 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4337
4338 enabled xmm_clobber_test &&
4339     check_ldflags -Wl,--wrap,avcodec_open2              \
4340                   -Wl,--wrap,avcodec_decode_audio4      \
4341                   -Wl,--wrap,avcodec_decode_video2      \
4342                   -Wl,--wrap,avcodec_decode_subtitle2   \
4343                   -Wl,--wrap,avcodec_encode_audio2      \
4344                   -Wl,--wrap,avcodec_encode_video       \
4345                   -Wl,--wrap,avcodec_encode_subtitle    \
4346                   -Wl,--wrap,sws_scale ||
4347     disable xmm_clobber_test
4348
4349 echo "X{};" > $TMPV
4350 if test_ldflags -Wl,--version-script,$TMPV; then
4351     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4352     check_cc <<EOF && enable symver_asm_label
4353 void ff_foo(void) __asm__ ("av_foo@VERSION");
4354 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4355 EOF
4356     check_cc <<EOF && enable symver_gnu_asm
4357 __asm__(".symver ff_foo,av_foo@VERSION");
4358 void ff_foo(void) {}
4359 EOF
4360 fi
4361
4362 if [ -z "$optflags" ]; then
4363     if enabled small; then
4364         optflags=$cflags_size
4365     elif enabled optimizations; then
4366         optflags=$cflags_speed
4367     else
4368         optflags=$cflags_noopt
4369     fi
4370 fi
4371
4372 check_optflags(){
4373     check_cflags "$@"
4374     enabled lto && check_ldflags "$@"
4375 }
4376
4377
4378 if enabled lto; then
4379     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4380     check_cflags  -flto
4381     check_ldflags -flto $cpuflags
4382 fi
4383
4384 check_optflags $optflags
4385 check_optflags -fno-math-errno
4386 check_optflags -fno-signed-zeros
4387
4388 enabled ftrapv && check_cflags -ftrapv
4389
4390 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4391 int x;
4392 EOF
4393
4394
4395 if enabled icc; then
4396     # Just warnings, no remarks
4397     check_cflags -w1
4398     # -wd: Disable following warnings
4399     # 144, 167, 556: -Wno-pointer-sign
4400     # 188: enumerated type mixed with another type
4401     # 1292: attribute "foo" ignored
4402     # 1419: external declaration in primary source file
4403     # 10006: ignoring unknown option -fno-signed-zeros
4404     # 10148: ignoring unknown option -Wno-parentheses
4405     # 10156: ignoring option '-W'; no argument required
4406     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4407     # 11030: Warning unknown option --as-needed
4408     # 10156: ignoring option '-export'; no argument required
4409     check_ldflags -wd10156,11030
4410     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4411     enable ebp_available
4412     if enabled x86_32; then
4413         icc_version=$($cc -dumpversion)
4414         test ${icc_version%%.*} -ge 11 &&
4415             check_cflags -falign-stack=maintain-16-byte ||
4416             disable aligned_stack
4417     fi
4418 elif enabled ccc; then
4419     # disable some annoying warnings
4420     add_cflags -msg_disable bitnotint
4421     add_cflags -msg_disable mixfuncvoid
4422     add_cflags -msg_disable nonstandcast
4423     add_cflags -msg_disable unsupieee
4424 elif enabled gcc; then
4425     check_optflags -fno-tree-vectorize
4426     check_cflags -Werror=implicit-function-declaration
4427     check_cflags -Werror=missing-prototypes
4428     check_cflags -Werror=return-type
4429     check_cflags -Werror=vla
4430 elif enabled llvm_gcc; then
4431     check_cflags -mllvm -stack-alignment=16
4432 elif enabled clang; then
4433     check_cflags -mllvm -stack-alignment=16
4434     check_cflags -Qunused-arguments
4435     check_cflags -Werror=implicit-function-declaration
4436     check_cflags -Werror=missing-prototypes
4437     check_cflags -Werror=return-type
4438 elif enabled armcc; then
4439     # 2523: use of inline assembler is deprecated
4440     add_cflags -W${armcc_opt},--diag_suppress=2523
4441     add_cflags -W${armcc_opt},--diag_suppress=1207
4442     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4443     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4444     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4445     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4446 elif enabled tms470; then
4447     add_cflags -pds=824 -pds=837
4448 elif enabled pathscale; then
4449     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4450 elif enabled_any msvc icl; then
4451     enabled x86_32 && disable aligned_stack
4452     enabled_all x86_32 debug && add_cflags -Oy-
4453     if enabled icl; then
4454         # basically -fstrict-aliasing that does not work (correctly) on icl 13.x
4455         check_cpp_condition "windows.h" "__ICL < 1300" && add_cflags -Qansi-alias
4456         # icl will pass the inline asm tests but inline asm is currently
4457         # not supported (build will fail)
4458         disable inline_asm
4459     fi
4460 fi
4461
4462 case $target_os in
4463     osf1)
4464         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4465     ;;
4466     plan9)
4467         add_cppflags -Dmain=plan9_main
4468     ;;
4469 esac
4470
4471 enable frame_thread_encoder
4472 enabled_any $THREADS_LIST      && enable threads
4473 enabled_any $ATOMICS_LIST      && enable atomics_native
4474
4475 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4476
4477 check_deps $CONFIG_LIST       \
4478            $CONFIG_EXTRA      \
4479            $HAVE_LIST         \
4480            $ALL_COMPONENTS    \
4481
4482
4483 if test $target_os = "haiku"; then
4484     disable memalign
4485     disable posix_memalign
4486 fi
4487
4488 ! enabled_any memalign posix_memalign aligned_malloc &&
4489     enabled_any $need_memalign && enable memalign_hack
4490
4491 # add_dep lib dep
4492 # -> enable ${lib}_deps_${dep}
4493 # -> add $dep to ${lib}_deps only once
4494 add_dep() {
4495     lib=$1
4496     dep=$2
4497     enabled "${lib}_deps_${dep}" && return 0
4498     enable  "${lib}_deps_${dep}"
4499     prepend "${lib}_deps" $dep
4500 }
4501
4502 # merge deps lib components
4503 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4504 merge_deps() {
4505     lib=$1
4506     shift
4507     for comp in $*; do
4508         enabled $comp || continue
4509         eval "dep=\"\$${comp}_deps\""
4510         for d in $dep; do
4511             add_dep $lib $d
4512         done
4513     done
4514 }
4515
4516 merge_deps libavfilter $FILTER_LIST
4517
4518 echo "install prefix            $prefix"
4519 echo "source path               $source_path"
4520 echo "C compiler                $cc"
4521 echo "ARCH                      $arch ($cpu)"
4522 if test "$build_suffix" != ""; then
4523     echo "build suffix              $build_suffix"
4524 fi
4525 if test "$progs_suffix" != ""; then
4526     echo "progs suffix              $progs_suffix"
4527 fi
4528 if test "$extra_version" != ""; then
4529     echo "version string suffix     $extra_version"
4530 fi
4531 echo "big-endian                ${bigendian-no}"
4532 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4533 if enabled x86; then
4534     echo "${yasmexe}                      ${yasm-no}"
4535     echo "MMX enabled               ${mmx-no}"
4536     echo "MMXEXT enabled            ${mmxext-no}"
4537     echo "3DNow! enabled            ${amd3dnow-no}"
4538     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4539     echo "SSE enabled               ${sse-no}"
4540     echo "SSSE3 enabled             ${ssse3-no}"
4541     echo "AVX enabled               ${avx-no}"
4542     echo "FMA4 enabled              ${fma4-no}"
4543     echo "i686 features enabled     ${i686-no}"
4544     echo "CMOV is fast              ${fast_cmov-no}"
4545     echo "EBX available             ${ebx_available-no}"
4546     echo "EBP available             ${ebp_available-no}"
4547 fi
4548 if enabled arm; then
4549     echo "ARMv5TE enabled           ${armv5te-no}"
4550     echo "ARMv6 enabled             ${armv6-no}"
4551     echo "ARMv6T2 enabled           ${armv6t2-no}"
4552     echo "VFP enabled               ${vfp-no}"
4553     echo "NEON enabled              ${neon-no}"
4554     echo "THUMB enabled             ${thumb-no}"
4555 fi
4556 if enabled mips; then
4557     echo "MIPS FPU enabled          ${mipsfpu-no}"
4558     echo "MIPS32R2 enabled          ${mips32r2-no}"
4559     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4560     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4561 fi
4562 if enabled ppc; then
4563     echo "AltiVec enabled           ${altivec-no}"
4564     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4565     echo "dcbzl available           ${dcbzl-no}"
4566 fi
4567 if enabled sparc; then
4568     echo "VIS enabled               ${vis-no}"
4569 fi
4570 echo "debug symbols             ${debug-no}"
4571 echo "strip symbols             ${stripping-no}"
4572 echo "optimize for size         ${small-no}"
4573 echo "optimizations             ${optimizations-no}"
4574 echo "static                    ${static-no}"
4575 echo "shared                    ${shared-no}"
4576 echo "postprocessing support    ${postproc-no}"
4577 echo "new filter support        ${avfilter-no}"
4578 echo "network support           ${network-no}"
4579 echo "threading support         ${thread_type-no}"
4580 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4581 echo "SDL support               ${sdl-no}"
4582 echo "opencl enabled            ${opencl-no}"
4583 echo "texi2html enabled         ${texi2html-no}"
4584 echo "perl enabled              ${perl-no}"
4585 echo "pod2man enabled           ${pod2man-no}"
4586 echo "makeinfo enabled          ${makeinfo-no}"
4587 test -n "$random_seed" &&
4588     echo "random seed               ${random_seed}"
4589 echo
4590
4591 echo "External libraries:"
4592 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4593 echo
4594
4595 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4596     echo "Enabled ${type}s:"
4597     eval list=\$$(toupper $type)_LIST
4598     print_enabled '_*' $list | print_3_columns
4599     echo
4600 done
4601
4602 license="LGPL version 2.1 or later"
4603 if enabled nonfree; then
4604     license="nonfree and unredistributable"
4605 elif enabled gplv3; then
4606     license="GPL version 3 or later"
4607 elif enabled lgplv3; then
4608     license="LGPL version 3 or later"
4609 elif enabled gpl; then
4610     license="GPL version 2 or later"
4611 fi
4612
4613 echo "License: $license"
4614
4615 echo "Creating config.mak, config.h, and doc/config.texi..."
4616
4617 test -e Makefile || $ln_s "$source_path/Makefile" .
4618
4619 enabled stripping || strip="echo skipping strip"
4620
4621 config_files="$TMPH config.mak doc/config.texi"
4622
4623 cat > config.mak <<EOF
4624 # Automatically generated by configure - do not modify!
4625 ifndef FFMPEG_CONFIG_MAK
4626 FFMPEG_CONFIG_MAK=1
4627 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4628 prefix=$prefix
4629 LIBDIR=\$(DESTDIR)$libdir
4630 SHLIBDIR=\$(DESTDIR)$shlibdir
4631 INCDIR=\$(DESTDIR)$incdir
4632 BINDIR=\$(DESTDIR)$bindir
4633 DATADIR=\$(DESTDIR)$datadir
4634 MANDIR=\$(DESTDIR)$mandir
4635 SRC_PATH=$source_path
4636 ifndef MAIN_MAKEFILE
4637 SRC_PATH:=\$(SRC_PATH:.%=..%)
4638 endif
4639 CC_IDENT=$cc_ident
4640 ARCH=$arch
4641 CC=$cc
4642 CXX=$cxx
4643 AS=$as
4644 LD=$ld
4645 DEPCC=$dep_cc
4646 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4647 DEPAS=$as
4648 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4649 YASM=$yasmexe
4650 DEPYASM=$yasmexe
4651 AR=$ar
4652 ARFLAGS=$arflags
4653 AR_O=$ar_o
4654 RANLIB=$ranlib
4655 CP=cp -p
4656 LN_S=$ln_s
4657 STRIP=$strip
4658 CPPFLAGS=$CPPFLAGS
4659 CFLAGS=$CFLAGS
4660 CXXFLAGS=$CXXFLAGS
4661 ASFLAGS=$ASFLAGS
4662 AS_C=$AS_C
4663 AS_O=$AS_O
4664 CC_C=$CC_C
4665 CC_E=$CC_E
4666 CC_O=$CC_O
4667 CXX_C=$CXX_C
4668 CXX_O=$CXX_O
4669 LD_O=$LD_O
4670 LD_LIB=$LD_LIB
4671 LD_PATH=$LD_PATH
4672 DLLTOOL=$dlltool
4673 LDFLAGS=$LDFLAGS
4674 LDFLAGS-ffserver=$FFSERVERLDFLAGS
4675 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4676 YASMFLAGS=$YASMFLAGS
4677 BUILDSUF=$build_suffix
4678 PROGSSUF=$progs_suffix
4679 FULLNAME=$FULLNAME
4680 LIBPREF=$LIBPREF
4681 LIBSUF=$LIBSUF
4682 LIBNAME=$LIBNAME
4683 SLIBPREF=$SLIBPREF
4684 SLIBSUF=$SLIBSUF
4685 EXESUF=$EXESUF
4686 EXTRA_VERSION=$extra_version
4687 CCDEP=$CCDEP
4688 CXXDEP=$CXXDEP
4689 CCDEP_FLAGS=$CCDEP_FLAGS
4690 ASDEP=$ASDEP
4691 ASDEP_FLAGS=$ASDEP_FLAGS
4692 CC_DEPFLAGS=$CC_DEPFLAGS
4693 AS_DEPFLAGS=$AS_DEPFLAGS
4694 HOSTCC=$host_cc
4695 HOSTLD=$host_ld
4696 HOSTCFLAGS=$host_cflags
4697 HOSTCPPFLAGS=$host_cppflags
4698 HOSTEXESUF=$HOSTEXESUF
4699 HOSTLDFLAGS=$host_ldflags
4700 HOSTLIBS=$host_libs
4701 DEPHOSTCC=$host_cc
4702 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4703 HOSTCCDEP=$HOSTCCDEP
4704 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4705 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4706 HOSTCC_C=$HOSTCC_C
4707 HOSTCC_O=$HOSTCC_O
4708 HOSTLD_O=$HOSTLD_O
4709 TARGET_EXEC=$target_exec $target_exec_args
4710 TARGET_PATH=$target_path
4711 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4712 LIBS-ffplay=$sdl_libs
4713 CFLAGS-ffplay=$sdl_cflags
4714 ZLIB=$($ldflags_filter -lz)
4715 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4716 EXTRALIBS=$extralibs
4717 COMPAT_OBJS=$compat_objs
4718 EXEOBJS=$exeobjs
4719 INSTALL=$install
4720 LIBTARGET=${LIBTARGET}
4721 SLIBNAME=${SLIBNAME}
4722 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4723 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4724 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4725 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4726 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4727 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4728 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4729 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4730 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4731 NOREDZONE_FLAGS=$noredzone_flags
4732 EOF
4733
4734 get_version(){
4735     lcname=lib${1}
4736     name=$(toupper $lcname)
4737     file=$source_path/$lcname/version.h
4738     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4739     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4740     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4741     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4742     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4743 }
4744
4745 map 'get_version $v' $LIBRARY_LIST
4746
4747 cat > $TMPH <<EOF
4748 /* Automatically generated by configure - do not modify! */
4749 #ifndef FFMPEG_CONFIG_H
4750 #define FFMPEG_CONFIG_H
4751 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4752 #define FFMPEG_LICENSE "$(c_escape $license)"
4753 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4754 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4755 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4756 #define av_restrict $_restrict
4757 #define EXTERN_PREFIX "${extern_prefix}"
4758 #define EXTERN_ASM ${extern_prefix}
4759 #define SLIBSUF "$SLIBSUF"
4760 #define HAVE_MMX2 HAVE_MMXEXT
4761 EOF
4762
4763 test -n "$assert_level" &&
4764     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4765
4766 test -n "$malloc_prefix" &&
4767     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4768
4769 if enabled yasm; then
4770     append config_files $TMPASM
4771     printf '' >$TMPASM
4772 fi
4773
4774 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4775
4776
4777 mkdir -p doc
4778 echo "@c auto-generated by configure" > doc/config.texi
4779
4780 print_config ARCH_   "$config_files" $ARCH_LIST
4781 print_config HAVE_   "$config_files" $HAVE_LIST
4782 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4783                                      $CONFIG_EXTRA      \
4784                                      $ALL_COMPONENTS    \
4785
4786 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4787 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4788
4789 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4790 cp_if_changed $TMPH config.h
4791 touch .config
4792
4793 enabled yasm && cp_if_changed $TMPASM config.asm
4794
4795 cat > $TMPH <<EOF
4796 /* Generated by ffconf */
4797 #ifndef AVUTIL_AVCONFIG_H
4798 #define AVUTIL_AVCONFIG_H
4799 EOF
4800
4801 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4802
4803 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4804
4805 cp_if_changed $TMPH libavutil/avconfig.h
4806
4807 if test -n "$WARNINGS"; then
4808     printf "\n$WARNINGS"
4809     enabled fatal_warnings && exit 1
4810 fi
4811
4812 # build pkg-config files
4813
4814 pkgconfig_generate(){
4815     name=$1
4816     shortname=${name#lib}${build_suffix}
4817     comment=$2
4818     version=$3
4819     libs=$4
4820     requires=$5
4821     enabled ${name#lib} || return 0
4822     mkdir -p $name
4823     cat <<EOF > $name/$name${build_suffix}.pc
4824 prefix=$prefix
4825 exec_prefix=\${prefix}
4826 libdir=$libdir
4827 includedir=$incdir
4828
4829 Name: $name
4830 Description: $comment
4831 Version: $version
4832 Requires: $(enabled shared || echo $requires)
4833 Requires.private: $(enabled shared && echo $requires)
4834 Conflicts:
4835 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4836 Libs.private: $(enabled shared && echo $libs)
4837 Cflags: -I\${includedir}
4838 EOF
4839
4840 mkdir -p doc/examples/pc-uninstalled
4841 includedir=${source_path}
4842 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
4843     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
4844 prefix=
4845 exec_prefix=
4846 libdir=\${pcfiledir}/../../../$name
4847 includedir=${includedir}
4848
4849 Name: $name
4850 Description: $comment
4851 Version: $version
4852 Requires: $requires
4853 Conflicts:
4854 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4855 Cflags: -I\${includedir}
4856 EOF
4857 }
4858
4859 lavfi_libs="libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4860 enabled libavfilter_deps_avcodec    && prepend lavfi_libs "libavcodec${build_suffix} = $LIBAVCODEC_VERSION,"
4861 enabled libavfilter_deps_avformat   && prepend lavfi_libs "libavformat${build_suffix} = $LIBAVFORMAT_VERSION,"
4862 enabled libavfilter_deps_avresample && prepend lavfi_libs "libavresample${build_suffix} = $LIBAVRESAMPLE_VERSION,"
4863 enabled libavfilter_deps_swscale    && prepend lavfi_libs "libswscale${build_suffix} = $LIBSWSCALE_VERSION,"
4864 enabled libavfilter_deps_swresample && prepend lavfi_libs "libswresample${build_suffix} = $LIBSWRESAMPLE_VERSION,"
4865 enabled libavfilter_deps_postproc   && prepend lavfi_libs "libpostproc${build_suffix} = $LIBPOSTPROC_VERSION,"
4866 lavfi_libs=${lavfi_libs%, }
4867
4868 lavd_libs="libavformat${build_suffix} = $LIBAVFORMAT_VERSION"
4869 enabled lavfi_indev && prepend lavd_libs "libavfilter${build_suffix} = $LIBAVFILTER_VERSION,"
4870
4871 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
4872 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4873 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec${build_suffix} = $LIBAVCODEC_VERSION"
4874 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs" "$lavd_libs"
4875 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4876 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""           "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4877 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4878 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4879 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4880
4881 fix_ffmpeg_remote(){
4882     git_remote_from=$1
4883     git_remote_to=$2
4884     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
4885     if [ "$fixme_remote" != "" ]; then
4886         echolog "
4887 Outdated domain in git config, the official domain for ffmpeg git is since
4888 November 2011, source.ffmpeg.org, both the old and the new point to the same
4889 repository and server. To update it enter the following commands:
4890 "
4891         for remote in $fixme_remote; do
4892             echolog "git remote set-url $remote $git_remote_to"
4893         done
4894     fi
4895 }
4896
4897 if test -f "$source_path/.git/config"; then
4898     remote_from=git.videolan.org
4899     remote_to=source.ffmpeg.org
4900     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
4901     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
4902 fi