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
 106 Program options:
 107   --disable-programs       do not build command line programs
 108   --disable-ffmpeg         disable ffmpeg build
 109   --disable-ffplay         disable ffplay build
 110   --disable-ffprobe        disable ffprobe build
 111   --disable-ffserver       disable ffserver build
 112
 113 Documentation options:
 114   --disable-doc            do not build documentation
 115   --disable-htmlpages      do not build HTML documentation pages
 116   --disable-manpages       do not build man documentation pages
 117   --disable-podpages       do not build POD documentation pages
 118   --disable-txtpages       do not build text documentation pages
 119
 120 Component options:
 121   --disable-avdevice       disable libavdevice build
 122   --disable-avcodec        disable libavcodec build
 123   --disable-avformat       disable libavformat build
 124   --disable-avutil         disable libavutil build
 125   --disable-swresample     disable libswresample build
 126   --disable-swscale        disable libswscale build
 127   --disable-postproc       disable libpostproc build
 128   --disable-avfilter       disable libavfilter build
 129   --enable-avresample      enable libavresample build [no]
 130   --disable-pthreads       disable pthreads [auto]
 131   --disable-w32threads     disable Win32 threads [auto]
 132   --disable-os2threads     disable OS/2 threads [auto]
 133   --disable-network        disable network support [no]
 134   --disable-dct            disable DCT code
 135   --disable-dwt            disable DWT code
 136   --disable-error-resilience disable error resilience code
 137   --disable-lsp            disable LSP code
 138   --disable-lzo            disable LZO decoder code
 139   --disable-mdct           disable MDCT code
 140   --disable-rdft           disable RDFT code
 141   --disable-fft            disable FFT code
 142
 143 Hardware accelerators:
 144   --disable-dxva2          disable DXVA2 code [autodetect]
 145   --disable-vaapi          disable VAAPI code [autodetect]
 146   --enable-vda             enable VDA code
 147   --disable-vdpau          disable VDPAU code [autodetect]
 148
 149 Individual component options:
 150   --disable-everything     disable all components listed below
 151   --disable-encoder=NAME   disable encoder NAME
 152   --enable-encoder=NAME    enable encoder NAME
 153   --disable-encoders       disable all encoders
 154   --disable-decoder=NAME   disable decoder NAME
 155   --enable-decoder=NAME    enable decoder NAME
 156   --disable-decoders       disable all decoders
 157   --disable-hwaccel=NAME   disable hwaccel NAME
 158   --enable-hwaccel=NAME    enable hwaccel NAME
 159   --disable-hwaccels       disable all hwaccels
 160   --disable-muxer=NAME     disable muxer NAME
 161   --enable-muxer=NAME      enable muxer NAME
 162   --disable-muxers         disable all muxers
 163   --disable-demuxer=NAME   disable demuxer NAME
 164   --enable-demuxer=NAME    enable demuxer NAME
 165   --disable-demuxers       disable all demuxers
 166   --enable-parser=NAME     enable parser NAME
 167   --disable-parser=NAME    disable parser NAME
 168   --disable-parsers        disable all parsers
 169   --enable-bsf=NAME        enable bitstream filter NAME
 170   --disable-bsf=NAME       disable bitstream filter NAME
 171   --disable-bsfs           disable all bitstream filters
 172   --enable-protocol=NAME   enable protocol NAME
 173   --disable-protocol=NAME  disable protocol NAME
 174   --disable-protocols      disable all protocols
 175   --enable-indev=NAME      enable input device NAME
 176   --disable-indev=NAME     disable input device NAME
 177   --disable-indevs         disable input devices
 178   --enable-outdev=NAME     enable output device NAME
 179   --disable-outdev=NAME    disable output device NAME
 180   --disable-outdevs        disable output devices
 181   --disable-devices        disable all devices
 182   --enable-filter=NAME     enable filter NAME
 183   --disable-filter=NAME    disable filter NAME
 184   --disable-filters        disable all filters
 185
 186 External library support:
 187   --enable-avisynth        enable reading of AVISynth script files [no]
 188   --disable-bzlib          disable bzlib [autodetect]
 189   --enable-fontconfig      enable fontconfig
 190   --enable-frei0r          enable frei0r video filtering
 191   --enable-gnutls          enable gnutls [no]
 192   --disable-iconv          disable iconv [autodetect]
 193   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 194   --enable-libass          enable libass subtitles rendering [no]
 195   --enable-libbluray       enable BluRay reading using libbluray [no]
 196   --enable-libcaca         enable textual display using libcaca
 197   --enable-libcelt         enable CELT decoding via libcelt [no]
 198   --enable-libcdio         enable audio CD grabbing with libcdio
 199   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 200                            and libraw1394 [no]
 201   --enable-libfaac         enable AAC encoding via libfaac [no]
 202   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
 203   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 204   --enable-libfreetype     enable libfreetype [no]
 205   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 206   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 207   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 208   --enable-libmodplug      enable ModPlug via libmodplug [no]
 209   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 210   --enable-libnut          enable NUT (de)muxing via libnut,
 211                            native (de)muxer exists [no]
 212   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 213   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 214   --enable-libopencv       enable video filtering via libopencv [no]
 215   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 216   --enable-libopus         enable Opus decoding via libopus [no]
 217   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 218   --enable-libquvi         enable quvi input via libquvi [no]
 219   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 220   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 221   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 222   --enable-libsoxr         enable Include libsoxr resampling [no]
 223   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 224   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 225   --enable-libtheora       enable Theora encoding via libtheora [no]
 226   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 227   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 228   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 229   --enable-libvidstab      enable video stabilization using vid.stab [no]
 230   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 231   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 232   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 233                            native implementation exists [no]
 234   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 235   --enable-libx264         enable H.264 encoding via x264 [no]
 236   --enable-libxavs         enable AVS encoding via xavs [no]
 237   --enable-libxvid         enable Xvid encoding via xvidcore,
 238                            native MPEG-4/Xvid encoder exists [no]
 239   --enable-libzmq          enable message passing via libzmq [no]
 240   --enable-openal          enable OpenAL 1.1 capture support [no]
 241   --enable-opencl          enable OpenCL code
 242   --enable-openssl         enable openssl [no]
 243   --enable-x11grab         enable X11 grabbing [no]
 244   --disable-zlib           disable zlib [autodetect]
 245
 246 Advanced options (experts only):
 247   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 248   --enable-cross-compile   assume a cross-compiler is used
 249   --sysroot=PATH           root of cross-build tree
 250   --sysinclude=PATH        location of cross-build system headers
 251   --target-os=OS           compiler targets OS [$target_os]
 252   --target-exec=CMD        command to run executables on target
 253   --target-path=DIR        path to view of build directory on target
 254   --target-samples=DIR     path to samples directory on target
 255   --toolchain=NAME         set tool defaults according to NAME
 256   --nm=NM                  use nm tool NM [$nm_default]
 257   --ar=AR                  use archive tool AR [$ar_default]
 258   --as=AS                  use assembler AS [$as_default]
 259   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 260   --cc=CC                  use C compiler CC [$cc_default]
 261   --cxx=CXX                use C compiler CXX [$cxx_default]
 262   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 263   --ld=LD                  use linker LD [$ld_default]
 264   --host-cc=HOSTCC         use host C compiler HOSTCC
 265   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 266   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 267   --host-ld=HOSTLD         use host linker HOSTLD
 268   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 269   --host-libs=HLIBS        use libs HLIBS when linking for host
 270   --host-os=OS             compiler host OS [$target_os]
 271   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 272   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 273   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 274   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 275   --extra-version=STRING   version string suffix []
 276   --optflags=OPTFLAGS      override optimization-related compiler flags
 277   --build-suffix=SUFFIX    library name suffix []
 278   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 279   --progs-suffix=SUFFIX    program name suffix []
 280   --arch=ARCH              select architecture [$arch]
 281   --cpu=CPU                select the minimum required CPU (affects
 282                            instruction selection, may crash on older CPUs)
 283   --enable-pic             build position-independent code
 284   --enable-sram            allow use of on-chip SRAM
 285   --enable-thumb           compile for Thumb instruction set
 286   --disable-symver         disable symbol versioning
 287   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 288   --disable-safe-bitstream-reader
 289                            disable buffer boundary checking in bitreaders
 290                            (faster, but may crash)
 291   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 292   --enable-lto             use link-time optimization
 293
 294 Optimization options (experts only):
 295   --disable-asm            disable all assembler optimizations
 296   --disable-altivec        disable AltiVec optimizations
 297   --disable-amd3dnow       disable 3DNow! optimizations
 298   --disable-amd3dnowext    disable 3DNow! extended optimizations
 299   --disable-mmx            disable MMX optimizations
 300   --disable-mmxext         disable MMXEXT optimizations
 301   --disable-sse            disable SSE optimizations
 302   --disable-sse2           disable SSE2 optimizations
 303   --disable-sse3           disable SSE3 optimizations
 304   --disable-ssse3          disable SSSE3 optimizations
 305   --disable-sse4           disable SSE4 optimizations
 306   --disable-sse42          disable SSE4.2 optimizations
 307   --disable-avx            disable AVX optimizations
 308   --disable-fma4           disable FMA4 optimizations
 309   --disable-armv5te        disable armv5te optimizations
 310   --disable-armv6          disable armv6 optimizations
 311   --disable-armv6t2        disable armv6t2 optimizations
 312   --disable-vfp            disable VFP optimizations
 313   --disable-neon           disable NEON optimizations
 314   --disable-vis            disable VIS optimizations
 315   --disable-inline-asm     disable use of inline assembler
 316   --disable-yasm           disable use of yasm assembler
 317   --disable-mips32r2       disable MIPS32R2 optimizations
 318   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 319   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 320   --disable-mipsfpu        disable floating point MIPS optimizations
 321   --disable-fast-unaligned consider unaligned accesses slow
 322
 323 Developer options (useful when working on FFmpeg itself):
 324   --disable-debug          disable debugging symbols
 325   --enable-debug=LEVEL     set the debug level [$debuglevel]
 326   --disable-optimizations  disable compiler optimizations
 327   --enable-extra-warnings  enable more compiler warnings
 328   --disable-stripping      disable stripping of executables and shared libraries
 329   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 330                            2 causes a slowdown at runtime.
 331   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 332   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 333                            leaks and errors, using the specified valgrind binary.
 334                            Cannot be combined with --target-exec
 335   --enable-ftrapv          Trap arithmetic overflows
 336   --samples=PATH           location of test samples for FATE, if not set use
 337                            \$FATE_SAMPLES at make invocation time.
 338   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 339                            should be used only for debugging purposes)
 340   --enable-random          randomly enable/disable components
 341   --disable-random
 342   --enable-random=LIST     randomly enable/disable specific components or
 343   --disable-random=LIST    component groups. LIST is a comma-separated list
 344                            of NAME[:PROB] entries where NAME is a component
 345                            (group) and PROB the probability associated with
 346                            NAME (default 0.5).
 347   --random-seed=VALUE      seed value for --enable/disable-random
 348
 349 NOTE: Object files are built at the place where configure is launched.
 350 EOF
 351   exit 0
 352 }
 353
 354 quotes='""'
 355
 356 log(){
 357     echo "$@" >> $logfile
 358 }
 359
 360 log_file(){
 361     log BEGIN $1
 362     pr -n -t $1 >> $logfile
 363     log END $1
 364 }
 365
 366 echolog(){
 367     log "$@"
 368     echo "$@"
 369 }
 370
 371 warn(){
 372     log "WARNING: $*"
 373     WARNINGS="${WARNINGS}WARNING: $*\n"
 374 }
 375
 376 die(){
 377     echolog "$@"
 378     cat <<EOF
 379
 380 If you think configure made a mistake, make sure you are using the latest
 381 version from Git.  If the latest version fails, report the problem to the
 382 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 383 EOF
 384     if disabled logging; then
 385         cat <<EOF
 386 Rerun configure with logging enabled (do not use --disable-logging), and
 387 include the log this produces with your report.
 388 EOF
 389     else
 390         cat <<EOF
 391 Include the log file "$logfile" produced by configure as this will help
 392 solving the problem.
 393 EOF
 394     fi
 395     exit 1
 396 }
 397
 398 # Avoid locale weirdness, besides we really just want to translate ASCII.
 399 toupper(){
 400     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 401 }
 402
 403 tolower(){
 404     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 405 }
 406
 407 c_escape(){
 408     echo "$*" | sed 's/["\\]/\\\0/g'
 409 }
 410
 411 sh_quote(){
 412     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 413     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 414     echo "$v"
 415 }
 416
 417 cleanws(){
 418     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 419 }
 420
 421 filter(){
 422     pat=$1
 423     shift
 424     for v; do
 425         eval "case $v in $pat) echo $v ;; esac"
 426     done
 427 }
 428
 429 filter_out(){
 430     pat=$1
 431     shift
 432     for v; do
 433         eval "case $v in $pat) ;; *) echo $v ;; esac"
 434     done
 435 }
 436
 437 map(){
 438     m=$1
 439     shift
 440     for v; do eval $m; done
 441 }
 442
 443 add_suffix(){
 444     suffix=$1
 445     shift
 446     for v; do echo ${v}${suffix}; done
 447 }
 448
 449 set_all(){
 450     value=$1
 451     shift
 452     for var in $*; do
 453         eval $var=$value
 454     done
 455 }
 456
 457 set_weak(){
 458     value=$1
 459     shift
 460     for var; do
 461         eval : \${$var:=$value}
 462     done
 463 }
 464
 465 sanitize_var_name(){
 466     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 467 }
 468
 469 set_safe(){
 470     var=$1
 471     shift
 472     eval $(sanitize_var_name "$var")='$*'
 473 }
 474
 475 get_safe(){
 476     eval echo \$$(sanitize_var_name "$1")
 477 }
 478
 479 pushvar(){
 480     for pvar in $*; do
 481         eval level=\${${pvar}_level:=0}
 482         eval ${pvar}_${level}="\$$pvar"
 483         eval ${pvar}_level=$(($level+1))
 484     done
 485 }
 486
 487 popvar(){
 488     for pvar in $*; do
 489         eval level=\${${pvar}_level:-0}
 490         test $level = 0 && continue
 491         eval level=$(($level-1))
 492         eval $pvar="\${${pvar}_${level}}"
 493         eval ${pvar}_level=$level
 494         eval unset ${pvar}_${level}
 495     done
 496 }
 497
 498 enable(){
 499     set_all yes $*
 500 }
 501
 502 disable(){
 503     set_all no $*
 504 }
 505
 506 enable_weak(){
 507     set_weak yes $*
 508 }
 509
 510 disable_weak(){
 511     set_weak no $*
 512 }
 513
 514 enable_safe(){
 515     for var; do
 516         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 517     done
 518 }
 519
 520 disable_safe(){
 521     for var; do
 522         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 523     done
 524 }
 525
 526 do_enable_deep(){
 527     for var; do
 528         enabled $var && continue
 529         eval sel="\$${var}_select"
 530         eval sgs="\$${var}_suggest"
 531         pushvar var sgs
 532         enable_deep $sel
 533         popvar sgs
 534         enable_deep_weak $sgs
 535         popvar var
 536     done
 537 }
 538
 539 enable_deep(){
 540     do_enable_deep $*
 541     enable $*
 542 }
 543
 544 enable_deep_weak(){
 545     for var; do
 546         disabled $var && continue
 547         pushvar var
 548         do_enable_deep $var
 549         popvar var
 550         enable_weak $var
 551     done
 552 }
 553
 554 enabled(){
 555     test "${1#!}" = "$1" && op== || op=!=
 556     eval test "x\$${1#!}" $op "xyes"
 557 }
 558
 559 disabled(){
 560     test "${1#!}" = "$1" && op== || op=!=
 561     eval test "x\$${1#!}" $op "xno"
 562 }
 563
 564 enabled_all(){
 565     for opt; do
 566         enabled $opt || return 1
 567     done
 568 }
 569
 570 disabled_all(){
 571     for opt; do
 572         disabled $opt || return 1
 573     done
 574 }
 575
 576 enabled_any(){
 577     for opt; do
 578         enabled $opt && return 0
 579     done
 580 }
 581
 582 disabled_any(){
 583     for opt; do
 584         disabled $opt && return 0
 585     done
 586     return 1
 587 }
 588
 589 set_default(){
 590     for opt; do
 591         eval : \${$opt:=\$${opt}_default}
 592     done
 593 }
 594
 595 is_in(){
 596     value=$1
 597     shift
 598     for var in $*; do
 599         [ $var = $value ] && return 0
 600     done
 601     return 1
 602 }
 603
 604 do_check_deps(){
 605     for cfg; do
 606         cfg="${cfg#!}"
 607         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 608         disabled ${cfg}_checking && continue
 609         enable ${cfg}_checking
 610         append allopts $cfg
 611
 612         eval dep_all="\$${cfg}_deps"
 613         eval dep_any="\$${cfg}_deps_any"
 614         eval dep_sel="\$${cfg}_select"
 615         eval dep_sgs="\$${cfg}_suggest"
 616         eval dep_ifa="\$${cfg}_if"
 617         eval dep_ifn="\$${cfg}_if_any"
 618
 619         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 620         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 621         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 622
 623         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 624         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 625         enabled_all  $dep_all || disable $cfg
 626         enabled_any  $dep_any || disable $cfg
 627         disabled_any $dep_sel && disable $cfg
 628
 629         if enabled $cfg; then
 630             enable_deep $dep_sel
 631             enable_deep_weak $dep_sgs
 632         fi
 633
 634         disable ${cfg}_checking
 635     done
 636 }
 637
 638 check_deps(){
 639     unset allopts
 640
 641     do_check_deps "$@"
 642
 643     for cfg in $allopts; do
 644         enabled $cfg || continue
 645         eval dep_extralibs="\$${cfg}_extralibs"
 646         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 647     done
 648 }
 649
 650 print_config(){
 651     pfx=$1
 652     files=$2
 653     shift 2
 654     map 'eval echo "$v \${$v:-no}"' "$@" |
 655     awk "BEGIN { split(\"$files\", files) }
 656         {
 657             c = \"$pfx\" toupper(\$1);
 658             v = \$2;
 659             sub(/yes/, 1, v);
 660             sub(/no/,  0, v);
 661             for (f in files) {
 662                 file = files[f];
 663                 if (file ~ /\\.h\$/) {
 664                     printf(\"#define %s %d\\n\", c, v) >>file;
 665                 } else if (file ~ /\\.asm\$/) {
 666                     printf(\"%%define %s %d\\n\", c, v) >>file;
 667                 } else if (file ~ /\\.mak\$/) {
 668                     n = -v ? \"\" : \"!\";
 669                     printf(\"%s%s=yes\\n\", n, c) >>file;
 670                 } else if (file ~ /\\.texi\$/) {
 671                     pre = -v ? \"\" : \"@c \";
 672                     yesno = \$2;
 673                     c2 = tolower(c);
 674                     gsub(/_/, \"-\", c2);
 675                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 676                 }
 677             }
 678         }"
 679 }
 680
 681 print_enabled(){
 682     suf=$1
 683     shift
 684     for v; do
 685         enabled $v && printf "%s\n" ${v%$suf};
 686     done
 687 }
 688
 689 append(){
 690     var=$1
 691     shift
 692     eval "$var=\"\$$var $*\""
 693 }
 694
 695 prepend(){
 696     var=$1
 697     shift
 698     eval "$var=\"$* \$$var\""
 699 }
 700
 701 add_cppflags(){
 702     append CPPFLAGS "$@"
 703 }
 704
 705 add_cflags(){
 706     append CFLAGS $($cflags_filter "$@")
 707 }
 708
 709 add_cxxflags(){
 710     append CXXFLAGS $($cflags_filter "$@")
 711 }
 712
 713 add_asflags(){
 714     append ASFLAGS $($asflags_filter "$@")
 715 }
 716
 717 add_ldflags(){
 718     append LDFLAGS $($ldflags_filter "$@")
 719 }
 720
 721 add_extralibs(){
 722     prepend extralibs $($ldflags_filter "$@")
 723 }
 724
 725 add_host_cppflags(){
 726     append host_cppflags "$@"
 727 }
 728
 729 add_host_cflags(){
 730     append host_cflags $($host_cflags_filter "$@")
 731 }
 732
 733 add_host_ldflags(){
 734     append host_ldflags $($host_ldflags_filter "$@")
 735 }
 736
 737 add_compat(){
 738     append compat_objs $1
 739     shift
 740     map 'add_cppflags -D$v' "$@"
 741 }
 742
 743 check_cmd(){
 744     log "$@"
 745     "$@" >> $logfile 2>&1
 746 }
 747
 748 cc_o(){
 749     eval printf '%s\\n' $CC_O
 750 }
 751
 752 cc_e(){
 753     eval printf '%s\\n' $CC_E
 754 }
 755
 756 check_cc(){
 757     log check_cc "$@"
 758     cat > $TMPC
 759     log_file $TMPC
 760     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 761 }
 762
 763 check_cxx(){
 764     log check_cxx "$@"
 765     cat > $TMPCPP
 766     log_file $TMPCPP
 767     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 768 }
 769
 770 check_cpp(){
 771     log check_cpp "$@"
 772     cat > $TMPC
 773     log_file $TMPC
 774     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 775 }
 776
 777 as_o(){
 778     eval printf '%s\\n' $AS_O
 779 }
 780
 781 check_as(){
 782     log check_as "$@"
 783     cat > $TMPS
 784     log_file $TMPS
 785     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 786 }
 787
 788 check_inline_asm(){
 789     log check_inline_asm "$@"
 790     name="$1"
 791     code="$2"
 792     shift 2
 793     disable $name
 794     check_cc "$@" <<EOF && enable $name
 795 void foo(void){ __asm__ volatile($code); }
 796 EOF
 797 }
 798
 799 check_insn(){
 800     log check_insn "$@"
 801     check_inline_asm ${1}_inline "\"$2\""
 802     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 803 }
 804
 805 check_yasm(){
 806     log check_yasm "$@"
 807     echo "$1" > $TMPS
 808     log_file $TMPS
 809     shift 1
 810     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 811 }
 812
 813 ld_o(){
 814     eval printf '%s\\n' $LD_O
 815 }
 816
 817 check_ld(){
 818     log check_ld "$@"
 819     type=$1
 820     shift 1
 821     flags=$(filter_out '-l*|*.so' $@)
 822     libs=$(filter '-l*|*.so' $@)
 823     check_$type $($cflags_filter $flags) || return
 824     flags=$($ldflags_filter $flags)
 825     libs=$($ldflags_filter $libs)
 826     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 827 }
 828
 829 check_code(){
 830     log check_code "$@"
 831     check=$1
 832     headers=$2
 833     code=$3
 834     shift 3
 835     {
 836         for hdr in $headers; do
 837             echo "#include <$hdr>"
 838         done
 839         echo "int main(void) { $code; return 0; }"
 840     } | check_$check "$@"
 841 }
 842
 843 check_cppflags(){
 844     log check_cppflags "$@"
 845     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 846 int x;
 847 EOF
 848 }
 849
 850 check_cflags(){
 851     log check_cflags "$@"
 852     set -- $($cflags_filter "$@")
 853     check_cc "$@" <<EOF && append CFLAGS "$@"
 854 int x;
 855 EOF
 856 }
 857
 858 check_cxxflags(){
 859     log check_cxxflags "$@"
 860     set -- $($cflags_filter "$@")
 861     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 862 int x;
 863 EOF
 864 }
 865
 866 test_ldflags(){
 867     log test_ldflags "$@"
 868     check_ld "cc" "$@" <<EOF
 869 int main(void){ return 0; }
 870 EOF
 871 }
 872
 873 check_ldflags(){
 874     log check_ldflags "$@"
 875     test_ldflags "$@" && add_ldflags "$@"
 876 }
 877
 878 check_header(){
 879     log check_header "$@"
 880     header=$1
 881     shift
 882     disable_safe $header
 883     check_cpp "$@" <<EOF && enable_safe $header
 884 #include <$header>
 885 int x;
 886 EOF
 887 }
 888
 889 check_func(){
 890     log check_func "$@"
 891     func=$1
 892     shift
 893     disable $func
 894     check_ld "cc" "$@" <<EOF && enable $func
 895 extern int $func();
 896 int main(void){ $func(); }
 897 EOF
 898 }
 899
 900 check_mathfunc(){
 901     log check_mathfunc "$@"
 902     func=$1
 903     narg=$2
 904     shift 2
 905     test $narg = 2 && args="f, g" || args="f"
 906     disable $func
 907     check_ld "cc" "$@" <<EOF && enable $func
 908 #include <math.h>
 909 float foo(float f, float g) { return $func($args); }
 910 int main(void){ return (int) foo; }
 911 EOF
 912 }
 913
 914 check_func_headers(){
 915     log check_func_headers "$@"
 916     headers=$1
 917     funcs=$2
 918     shift 2
 919     {
 920         for hdr in $headers; do
 921             echo "#include <$hdr>"
 922         done
 923         for func in $funcs; do
 924             echo "long check_$func(void) { return (long) $func; }"
 925         done
 926         echo "int main(void) { return 0; }"
 927     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
 928 }
 929
 930 check_class_headers_cpp(){
 931     log check_class_headers_cpp "$@"
 932     headers=$1
 933     classes=$2
 934     shift 2
 935     {
 936         for hdr in $headers; do
 937             echo "#include <$hdr>"
 938         done
 939         echo "int main(void) { "
 940         i=1
 941         for class in $classes; do
 942             echo "$class obj$i;"
 943             i=$(expr $i + 1)
 944         done
 945         echo "return 0; }"
 946     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
 947 }
 948
 949 check_cpp_condition(){
 950     log check_cpp_condition "$@"
 951     header=$1
 952     condition=$2
 953     shift 2
 954     check_cpp "$@" <<EOF
 955 #include <$header>
 956 #if !($condition)
 957 #error "unsatisfied condition: $condition"
 958 #endif
 959 EOF
 960 }
 961
 962 check_lib(){
 963     log check_lib "$@"
 964     header="$1"
 965     func="$2"
 966     shift 2
 967     check_header $header && check_func $func "$@" && add_extralibs "$@"
 968 }
 969
 970 check_lib2(){
 971     log check_lib2 "$@"
 972     headers="$1"
 973     funcs="$2"
 974     shift 2
 975     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 976 }
 977
 978 check_lib_cpp(){
 979     log check_lib_cpp "$@"
 980     headers="$1"
 981     classes="$2"
 982     shift 2
 983     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
 984 }
 985
 986 check_pkg_config(){
 987     log check_pkg_config "$@"
 988     pkg="$1"
 989     headers="$2"
 990     funcs="$3"
 991     shift 3
 992     $pkg_config --exists $pkg 2>/dev/null || return
 993     pkg_cflags=$($pkg_config --cflags $pkg)
 994     pkg_libs=$($pkg_config --libs $pkg)
 995     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 996         set_safe ${pkg}_cflags $pkg_cflags   &&
 997         set_safe ${pkg}_libs   $pkg_libs
 998 }
 999
1000 check_exec(){
1001     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1002 }
1003
1004 check_exec_crash(){
1005     code=$(cat)
1006
1007     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1008     # are safe but may not be available everywhere.  Thus we use
1009     # raise(SIGTERM) instead.  The check is run in a subshell so we
1010     # can redirect the "Terminated" message from the shell.  SIGBUS
1011     # is not defined by standard C so it is used conditionally.
1012
1013     (check_exec "$@") >> $logfile 2>&1 <<EOF
1014 #include <signal.h>
1015 static void sighandler(int sig){
1016     raise(SIGTERM);
1017 }
1018 int foo(void){
1019     $code
1020 }
1021 int (*func_ptr)(void) = foo;
1022 int main(void){
1023     signal(SIGILL, sighandler);
1024     signal(SIGFPE, sighandler);
1025     signal(SIGSEGV, sighandler);
1026 #ifdef SIGBUS
1027     signal(SIGBUS, sighandler);
1028 #endif
1029     return func_ptr();
1030 }
1031 EOF
1032 }
1033
1034 check_type(){
1035     log check_type "$@"
1036     headers=$1
1037     type=$2
1038     shift 2
1039     disable_safe "$type"
1040     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1041 }
1042
1043 check_struct(){
1044     log check_struct "$@"
1045     headers=$1
1046     struct=$2
1047     member=$3
1048     shift 3
1049     disable_safe "${struct}_${member}"
1050     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1051         enable_safe "${struct}_${member}"
1052 }
1053
1054 check_builtin(){
1055     log check_builtin "$@"
1056     name=$1
1057     headers=$2
1058     builtin=$3
1059     shift 3
1060     disable "$name"
1061     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1062 }
1063
1064 require(){
1065     name="$1"
1066     header="$2"
1067     func="$3"
1068     shift 3
1069     check_lib $header $func "$@" || die "ERROR: $name not found"
1070 }
1071
1072 require2(){
1073     name="$1"
1074     headers="$2"
1075     func="$3"
1076     shift 3
1077     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1078 }
1079
1080 require_cpp(){
1081     name="$1"
1082     headers="$2"
1083     classes="$3"
1084     shift 3
1085     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1086 }
1087
1088 require_pkg_config(){
1089     pkg="$1"
1090     check_pkg_config "$@" || die "ERROR: $pkg not found"
1091     add_cflags    $(get_safe ${pkg}_cflags)
1092     add_extralibs $(get_safe ${pkg}_libs)
1093 }
1094
1095 hostcc_o(){
1096     eval printf '%s\\n' $HOSTCC_O
1097 }
1098
1099 check_host_cc(){
1100     log check_host_cc "$@"
1101     cat > $TMPC
1102     log_file $TMPC
1103     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1104 }
1105
1106 check_host_cppflags(){
1107     log check_host_cppflags "$@"
1108     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1109 int x;
1110 EOF
1111 }
1112
1113 check_host_cflags(){
1114     log check_host_cflags "$@"
1115     set -- $($host_cflags_filter "$@")
1116     check_host_cc "$@" <<EOF && append host_cflags "$@"
1117 int x;
1118 EOF
1119 }
1120
1121 apply(){
1122     file=$1
1123     shift
1124     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1125 }
1126
1127 cp_if_changed(){
1128     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1129     mkdir -p "$(dirname $2)"
1130     $cp_f "$1" "$2"
1131 }
1132
1133 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1134 # system-dependent things.
1135
1136 COMPONENT_LIST="
1137     bsfs
1138     decoders
1139     demuxers
1140     encoders
1141     filters
1142     hwaccels
1143     indevs
1144     muxers
1145     outdevs
1146     parsers
1147     protocols
1148 "
1149
1150 EXTERNAL_LIBRARY_LIST="
1151     avisynth
1152     bzlib
1153     crystalhd
1154     fontconfig
1155     frei0r
1156     gnutls
1157     iconv
1158     libaacplus
1159     libass
1160     libbluray
1161     libcaca
1162     libcdio
1163     libcelt
1164     libdc1394
1165     libfaac
1166     libfdk_aac
1167     libflite
1168     libfreetype
1169     libgsm
1170     libiec61883
1171     libilbc
1172     libmodplug
1173     libmp3lame
1174     libnut
1175     libopencore_amrnb
1176     libopencore_amrwb
1177     libopencv
1178     libopenjpeg
1179     libopus
1180     libpulse
1181     libquvi
1182     librtmp
1183     libschroedinger
1184     libshine
1185     libsoxr
1186     libspeex
1187     libstagefright_h264
1188     libtheora
1189     libtwolame
1190     libutvideo
1191     libv4l2
1192     libvidstab
1193     libvo_aacenc
1194     libvo_amrwbenc
1195     libvorbis
1196     libvpx
1197     libx264
1198     libxavs
1199     libxvid
1200     libzmq
1201     openal
1202     opencl
1203     openssl
1204     x11grab
1205     zlib
1206 "
1207
1208 DOCUMENT_LIST="
1209     doc
1210     htmlpages
1211     manpages
1212     podpages
1213     txtpages
1214 "
1215
1216 HWACCEL_LIST="
1217     dxva2
1218     vaapi
1219     vda
1220     vdpau
1221 "
1222
1223 LIBRARY_LIST="
1224     avcodec
1225     avdevice
1226     avfilter
1227     avformat
1228     avresample
1229     avutil
1230     postproc
1231     swresample
1232     swscale
1233 "
1234
1235 PROGRAM_LIST="
1236     ffplay
1237     ffprobe
1238     ffserver
1239     ffmpeg
1240 "
1241
1242 CONFIG_LIST="
1243     $COMPONENT_LIST
1244     $DOCUMENT_LIST
1245     $EXTERNAL_LIBRARY_LIST
1246     $HWACCEL_LIST
1247     $LIBRARY_LIST
1248     $PROGRAM_LIST
1249     dct
1250     dwt
1251     error_resilience
1252     fast_unaligned
1253     fft
1254     ftrapv
1255     gpl
1256     gray
1257     hardcoded_tables
1258     incompatible_fork_abi
1259     lsp
1260     lzo
1261     mdct
1262     memalign_hack
1263     memory_poisoning
1264     network
1265     nonfree
1266     pic
1267     rdft
1268     runtime_cpudetect
1269     safe_bitstream_reader
1270     shared
1271     small
1272     sram
1273     static
1274     swscale_alpha
1275     thumb
1276     version3
1277     xmm_clobber_test
1278 "
1279
1280 THREADS_LIST='
1281     pthreads
1282     w32threads
1283     os2threads
1284 '
1285
1286 ATOMICS_LIST='
1287     atomics_gcc
1288     atomics_suncc
1289     atomics_win32
1290 '
1291
1292 ARCH_LIST='
1293     aarch64
1294     alpha
1295     arm
1296     avr32
1297     avr32_ap
1298     avr32_uc
1299     bfin
1300     ia64
1301     m68k
1302     mips
1303     mips64
1304     parisc
1305     ppc
1306     ppc64
1307     s390
1308     sh4
1309     sparc
1310     sparc64
1311     tilegx
1312     tilepro
1313     tomi
1314     x86
1315     x86_32
1316     x86_64
1317 '
1318
1319 ARCH_EXT_LIST_ARM='
1320     armv5te
1321     armv6
1322     armv6t2
1323     neon
1324     vfp
1325     vfpv3
1326 '
1327
1328 ARCH_EXT_LIST_X86='
1329     amd3dnow
1330     amd3dnowext
1331     avx
1332     fma4
1333     mmx
1334     mmxext
1335     sse
1336     sse2
1337     sse3
1338     sse4
1339     sse42
1340     ssse3
1341 '
1342
1343 ARCH_EXT_LIST="
1344     $ARCH_EXT_LIST_ARM
1345     $ARCH_EXT_LIST_X86
1346     altivec
1347     ppc4xx
1348     vis
1349     mipsfpu
1350     mips32r2
1351     mipsdspr1
1352     mipsdspr2
1353 "
1354
1355 HAVE_LIST_CMDLINE='
1356     inline_asm
1357     symver
1358     yasm
1359 '
1360
1361 HAVE_LIST_PUB='
1362     bigendian
1363     fast_unaligned
1364     incompatible_fork_abi
1365 '
1366
1367 MATH_FUNCS="
1368     atanf
1369     atan2f
1370     cbrt
1371     cbrtf
1372     cosf
1373     exp2
1374     exp2f
1375     expf
1376     isinf
1377     isnan
1378     ldexpf
1379     llrint
1380     llrintf
1381     log2
1382     log2f
1383     log10f
1384     lrint
1385     lrintf
1386     powf
1387     rint
1388     round
1389     roundf
1390     sinf
1391     trunc
1392     truncf
1393 "
1394
1395 HAVE_LIST="
1396     $ARCH_EXT_LIST
1397     $(add_suffix _external $ARCH_EXT_LIST)
1398     $(add_suffix _inline   $ARCH_EXT_LIST)
1399     $HAVE_LIST_CMDLINE
1400     $HAVE_LIST_PUB
1401     $THREADS_LIST
1402     $ATOMICS_LIST
1403     $MATH_FUNCS
1404     access
1405     aligned_malloc
1406     aligned_stack
1407     alsa_asoundlib_h
1408     altivec_h
1409     arpa_inet_h
1410     asm_mod_q
1411     asm_mod_y
1412     asm_types_h
1413     atomic_cas_ptr
1414     atomics_native
1415     attribute_may_alias
1416     attribute_packed
1417     cdio_paranoia_h
1418     cdio_paranoia_paranoia_h
1419     CL_cl_h
1420     clock_gettime
1421     closesocket
1422     CommandLineToArgvW
1423     cpunop
1424     CryptGenRandom
1425     dcbzl
1426     dev_bktr_ioctl_bt848_h
1427     dev_bktr_ioctl_meteor_h
1428     dev_ic_bt8xx_h
1429     dev_video_bktr_ioctl_bt848_h
1430     dev_video_meteor_ioctl_meteor_h
1431     direct_h
1432     dlfcn_h
1433     dlopen
1434     dos_paths
1435     dxva_h
1436     ebp_available
1437     ebx_available
1438     fast_64bit
1439     fast_clz
1440     fast_cmov
1441     fcntl
1442     fork
1443     getaddrinfo
1444     gethrtime
1445     getopt
1446     GetProcessAffinityMask
1447     GetProcessMemoryInfo
1448     GetProcessTimes
1449     GetSystemTimeAsFileTime
1450     getrusage
1451     getservbyport
1452     gettimeofday
1453     glob
1454     gnu_as
1455     gsm_h
1456     i686
1457     ibm_asm
1458     inet_aton
1459     io_h
1460     isatty
1461     jack_port_get_latency_range
1462     kbhit
1463     ldbrx
1464     libdc1394_1
1465     libdc1394_2
1466     local_aligned_16
1467     local_aligned_8
1468     localtime_r
1469     loongson
1470     lzo1x_999_compress
1471     machine_ioctl_bt848_h
1472     machine_ioctl_meteor_h
1473     machine_rw_barrier
1474     makeinfo
1475     malloc_h
1476     MapViewOfFile
1477     memalign
1478     MemoryBarrier
1479     mkstemp
1480     mm_empty
1481     mmap
1482     mprotect
1483     msvcrt
1484     nanosleep
1485     openjpeg_1_5_openjpeg_h
1486     PeekNamedPipe
1487     perl
1488     pod2man
1489     poll_h
1490     posix_memalign
1491     pthread_cancel
1492     rdtsc
1493     rsync_contimeout
1494     sched_getaffinity
1495     sdl
1496     SetConsoleTextAttribute
1497     setmode
1498     setrlimit
1499     Sleep
1500     sndio_h
1501     socklen_t
1502     soundcard_h
1503     strerror_r
1504     struct_addrinfo
1505     struct_group_source_req
1506     struct_ip_mreq_source
1507     struct_ipv6_mreq
1508     struct_pollfd
1509     struct_rusage_ru_maxrss
1510     struct_sctp_event_subscribe
1511     struct_sockaddr_in6
1512     struct_sockaddr_sa_len
1513     struct_sockaddr_storage
1514     struct_v4l2_frmivalenum_discrete
1515     symver_asm_label
1516     symver_gnu_asm
1517     sync_val_compare_and_swap
1518     sysconf
1519     sysctl
1520     sys_mman_h
1521     sys_param_h
1522     sys_resource_h
1523     sys_select_h
1524     sys_soundcard_h
1525     sys_time_h
1526     sys_videoio_h
1527     termios_h
1528     texi2html
1529     threads
1530     unistd_h
1531     usleep
1532     vfp_args
1533     VirtualAlloc
1534     windows_h
1535     winsock2_h
1536     xform_asm
1537     xmm_clobbers
1538 "
1539
1540 # options emitted with CONFIG_ prefix but not available on the command line
1541 CONFIG_EXTRA="
1542     aandcttables
1543     ac3dsp
1544     audio_frame_queue
1545     dsputil
1546     frame_thread_encoder
1547     gcrypt
1548     golomb
1549     gplv3
1550     h264chroma
1551     h264dsp
1552     h264pred
1553     h264qpel
1554     hpeldsp
1555     huffman
1556     lgplv3
1557     lpc
1558     mpegaudio
1559     mpegaudiodsp
1560     mpegvideo
1561     mpegvideoenc
1562     nettle
1563     rangecoder
1564     rtpdec
1565     rtpenc_chain
1566     sinewin
1567     videodsp
1568     vp3dsp
1569 "
1570
1571 CMDLINE_SELECT="
1572     $ARCH_EXT_LIST
1573     $CONFIG_LIST
1574     $HAVE_LIST_CMDLINE
1575     $THREADS_LIST
1576     asm
1577     cross_compile
1578     debug
1579     extra_warnings
1580     logging
1581     lto
1582     optimizations
1583     stripping
1584 "
1585
1586 PATHS_LIST='
1587     bindir
1588     datadir
1589     incdir
1590     libdir
1591     mandir
1592     prefix
1593     shlibdir
1594 '
1595
1596 CMDLINE_SET="
1597     $PATHS_LIST
1598     ar
1599     arch
1600     as
1601     assert_level
1602     build_suffix
1603     cc
1604     cpu
1605     cross_prefix
1606     cxx
1607     dep_cc
1608     extra_version
1609     host_cc
1610     host_cflags
1611     host_ld
1612     host_ldflags
1613     host_libs
1614     host_os
1615     install
1616     ld
1617     logfile
1618     malloc_prefix
1619     nm
1620     optflags
1621     pkg_config
1622     progs_suffix
1623     random_seed
1624     samples
1625     strip
1626     sysinclude
1627     sysroot
1628     target_exec
1629     target_os
1630     target_path
1631     target_samples
1632     toolchain
1633     valgrind
1634     yasmexe
1635 "
1636
1637 CMDLINE_APPEND="
1638     extra_cflags
1639     extra_cxxflags
1640     host_cppflags
1641 "
1642
1643 # code dependency declarations
1644
1645 # architecture extensions
1646
1647 armv5te_deps="arm"
1648 armv6_deps="arm"
1649 armv6t2_deps="arm"
1650 neon_deps="arm"
1651 vfp_deps="arm"
1652 vfpv3_deps="vfp"
1653
1654 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1655
1656 mipsfpu_deps="mips"
1657 mips32r2_deps="mips"
1658 mipsdspr1_deps="mips"
1659 mipsdspr2_deps="mips"
1660
1661 altivec_deps="ppc"
1662 ppc4xx_deps="ppc"
1663
1664 vis_deps="sparc"
1665
1666 x86_64_suggest="fast_cmov i686"
1667
1668 amd3dnow_deps="mmx"
1669 amd3dnowext_deps="amd3dnow"
1670 mmx_deps="x86"
1671 mmxext_deps="mmx"
1672 sse_deps="mmxext"
1673 sse2_deps="sse"
1674 sse3_deps="sse2"
1675 ssse3_deps="sse3"
1676 sse4_deps="ssse3"
1677 sse42_deps="sse4"
1678 avx_deps="sse42"
1679 fma4_deps="avx"
1680
1681 mmx_external_deps="yasm"
1682 mmx_inline_deps="inline_asm"
1683 mmx_suggest="mmx_external mmx_inline"
1684
1685 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1686     eval dep=\$${ext}_deps
1687     eval ${ext}_external_deps='"${dep}_external"'
1688     eval ${ext}_inline_deps='"${dep}_inline"'
1689     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1690 done
1691
1692 aligned_stack_if_any="ppc x86"
1693 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1694 fast_clz_if_any="alpha avr32 mips ppc x86"
1695 fast_unaligned_if_any="ppc x86"
1696
1697 inline_asm_deps="!tms470"
1698 need_memalign="altivec neon sse"
1699
1700 symver_if_any="symver_asm_label symver_gnu_asm"
1701
1702 log2_deps="!msvcrt"
1703
1704 # subsystems
1705 dct_select="rdft"
1706 error_resilience_select="dsputil"
1707 frame_thread_encoder_deps="encoders threads"
1708 lpc_select="dsputil"
1709 mdct_select="fft"
1710 rdft_select="fft"
1711 mpegaudio_select="mpegaudiodsp"
1712 mpegaudiodsp_select="dct"
1713 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1714 mpegvideoenc_select="mpegvideo"
1715
1716 # decoders / encoders
1717 aac_decoder_select="mdct sinewin"
1718 aac_encoder_select="audio_frame_queue mdct sinewin"
1719 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1720 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1721 ac3_encoder_select="mdct ac3dsp dsputil"
1722 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1723 aic_decoder_select="dsputil golomb"
1724 alac_encoder_select="lpc"
1725 als_decoder_select="dsputil"
1726 amrnb_decoder_select="lsp"
1727 amrwb_decoder_select="lsp"
1728 amv_decoder_select="dsputil hpeldsp"
1729 amv_encoder_select="aandcttables"
1730 ape_decoder_select="dsputil"
1731 asv1_decoder_select="dsputil"
1732 asv1_encoder_select="dsputil"
1733 asv2_decoder_select="dsputil"
1734 asv2_encoder_select="dsputil"
1735 atrac1_decoder_select="mdct sinewin"
1736 atrac3_decoder_select="mdct"
1737 bink_decoder_select="dsputil hpeldsp"
1738 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1739 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1740 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1741 cllc_decoder_select="dsputil"
1742 comfortnoise_encoder_select="lpc"
1743 cook_decoder_select="dsputil mdct sinewin"
1744 cscd_decoder_select="lzo"
1745 cscd_decoder_suggest="zlib"
1746 dca_decoder_select="mdct"
1747 dirac_decoder_select="dsputil dwt golomb videodsp"
1748 dnxhd_decoder_select="dsputil"
1749 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1750 dvvideo_decoder_select="dsputil"
1751 dvvideo_encoder_select="dsputil"
1752 dxa_decoder_select="zlib"
1753 eac3_decoder_select="ac3_decoder"
1754 eac3_encoder_select="ac3_encoder"
1755 eamad_decoder_select="aandcttables dsputil mpegvideo"
1756 eatgq_decoder_select="aandcttables"
1757 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1758 exr_decoder_select="zlib"
1759 ffv1_decoder_select="dsputil golomb rangecoder"
1760 ffv1_encoder_select="dsputil rangecoder"
1761 ffvhuff_decoder_select="dsputil"
1762 ffvhuff_encoder_select="dsputil huffman"
1763 flac_decoder_select="golomb"
1764 flac_encoder_select="dsputil golomb lpc"
1765 flashsv_decoder_select="zlib"
1766 flashsv_encoder_select="zlib"
1767 flashsv2_encoder_select="zlib"
1768 flashsv2_decoder_select="zlib"
1769 flv_decoder_select="h263_decoder"
1770 flv_encoder_select="h263_encoder"
1771 fourxm_decoder_select="dsputil"
1772 fraps_decoder_select="dsputil huffman"
1773 g729_decoder_select="dsputil"
1774 h261_decoder_select="error_resilience mpegvideo"
1775 h261_encoder_select="aandcttables mpegvideoenc"
1776 h263_decoder_select="error_resilience h263_parser mpegvideo"
1777 h263_encoder_select="aandcttables mpegvideoenc"
1778 h263i_decoder_select="h263_decoder"
1779 h263p_encoder_select="h263_encoder"
1780 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1781 h264_decoder_suggest="error_resilience"
1782 huffyuv_decoder_select="dsputil"
1783 huffyuv_encoder_select="dsputil huffman"
1784 iac_decoder_select="dsputil fft mdct sinewin"
1785 imc_decoder_select="dsputil fft mdct sinewin"
1786 indeo3_decoder_select="hpeldsp"
1787 interplay_video_decoder_select="hpeldsp"
1788 jpegls_decoder_select="dsputil golomb hpeldsp"
1789 jpegls_encoder_select="golomb"
1790 jv_decoder_select="dsputil"
1791 lagarith_decoder_select="dsputil"
1792 ljpeg_encoder_select="aandcttables mpegvideoenc"
1793 loco_decoder_select="golomb"
1794 mdec_decoder_select="dsputil error_resilience mpegvideo"
1795 mimic_decoder_select="dsputil hpeldsp"
1796 mjpeg_decoder_select="dsputil hpeldsp"
1797 mjpegb_decoder_select="dsputil hpeldsp"
1798 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1799 mlp_decoder_select="dsputil mlp_parser"
1800 motionpixels_decoder_select="dsputil"
1801 mp1_decoder_select="mpegaudio"
1802 mp1float_decoder_select="mpegaudio"
1803 mp2_decoder_select="mpegaudio"
1804 mp2float_decoder_select="mpegaudio"
1805 mp3_decoder_select="mpegaudio"
1806 mp3adu_decoder_select="mpegaudio"
1807 mp3adufloat_decoder_select="mpegaudio"
1808 mp3float_decoder_select="mpegaudio"
1809 mp3on4_decoder_select="mpegaudio"
1810 mp3on4float_decoder_select="mpegaudio"
1811 mpc7_decoder_select="dsputil mpegaudiodsp"
1812 mpc8_decoder_select="dsputil mpegaudiodsp"
1813 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1814 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1815 mpeg1video_decoder_select="error_resilience mpegvideo"
1816 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1817 mpeg2video_decoder_select="error_resilience mpegvideo"
1818 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1819 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1820 mpeg4_encoder_select="h263_encoder"
1821 msmpeg4v1_decoder_select="h263_decoder"
1822 msmpeg4v2_decoder_select="h263_decoder"
1823 msmpeg4v2_encoder_select="h263_encoder"
1824 msmpeg4v3_decoder_select="h263_decoder"
1825 msmpeg4v3_encoder_select="h263_encoder"
1826 mss2_decoder_select="error_resilience vc1_decoder"
1827 mxpeg_decoder_select="dsputil hpeldsp"
1828 nellymoser_decoder_select="mdct sinewin"
1829 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1830 nuv_decoder_select="dsputil lzo"
1831 png_decoder_select="zlib"
1832 png_encoder_select="dsputil zlib"
1833 prores_decoder_select="dsputil"
1834 prores_encoder_select="dsputil"
1835 qcelp_decoder_select="lsp"
1836 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1837 ra_144_encoder_select="audio_frame_queue lpc"
1838 ralf_decoder_select="golomb"
1839 rtjpeg_decoder_select="dsputil"
1840 rv10_decoder_select="error_resilience h263_decoder"
1841 rv10_encoder_select="h263_encoder"
1842 rv20_decoder_select="error_resilience h263_decoder"
1843 rv20_encoder_select="h263_encoder"
1844 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1845 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1846 shorten_decoder_select="golomb"
1847 sipr_decoder_select="lsp"
1848 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1849 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1850 sonic_decoder_select="golomb"
1851 sonic_encoder_select="golomb"
1852 sonic_ls_encoder_select="golomb"
1853 sp5x_decoder_select="dsputil hpeldsp"
1854 svq1_decoder_select="hpeldsp"
1855 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1856 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1857 svq3_decoder_suggest="error_resilience zlib"
1858 tak_decoder_select="dsputil"
1859 theora_decoder_select="vp3_decoder"
1860 tiff_decoder_suggest="zlib"
1861 tiff_encoder_suggest="zlib"
1862 thp_decoder_select="dsputil hpeldsp"
1863 truehd_decoder_select="mlp_parser"
1864 truemotion2_decoder_select="dsputil"
1865 truespeech_decoder_select="dsputil"
1866 tscc_decoder_select="zlib"
1867 twinvq_decoder_select="mdct lsp sinewin"
1868 utvideo_decoder_select="dsputil"
1869 utvideo_encoder_select="dsputil huffman"
1870 vble_decoder_select="dsputil"
1871 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1872 vc1image_decoder_select="vc1_decoder"
1873 vorbis_decoder_select="mdct"
1874 vorbis_encoder_select="mdct"
1875 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1876 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1877 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1878 vp6a_decoder_select="vp6_decoder"
1879 vp6f_decoder_select="vp6_decoder"
1880 vp8_decoder_select="h264pred videodsp"
1881 wmapro_decoder_select="mdct sinewin"
1882 wmav1_decoder_select="mdct sinewin"
1883 wmav1_encoder_select="mdct sinewin"
1884 wmav2_decoder_select="mdct sinewin"
1885 wmav2_encoder_select="mdct sinewin"
1886 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1887 wmv1_decoder_select="h263_decoder"
1888 wmv1_encoder_select="h263_encoder"
1889 wmv2_decoder_select="h263_decoder videodsp"
1890 wmv2_encoder_select="h263_encoder"
1891 wmv3_decoder_select="vc1_decoder"
1892 wmv3image_decoder_select="wmv3_decoder"
1893 zerocodec_decoder_select="zlib"
1894 zlib_decoder_select="zlib"
1895 zlib_encoder_select="zlib"
1896 zmbv_decoder_select="zlib"
1897 zmbv_encoder_select="zlib"
1898
1899 # hardware accelerators
1900 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1901 dxva2_deps="dxva2api_h"
1902 vaapi_deps="va_va_h"
1903 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1904 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1905 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1906
1907 h263_vaapi_hwaccel_deps="vaapi"
1908 h263_vaapi_hwaccel_select="h263_decoder"
1909 h263_vdpau_hwaccel_deps="vdpau"
1910 h263_vdpau_hwaccel_select="h263_decoder"
1911 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1912 h264_dxva2_hwaccel_deps="dxva2"
1913 h264_dxva2_hwaccel_select="h264_decoder"
1914 h264_vaapi_hwaccel_deps="vaapi"
1915 h264_vaapi_hwaccel_select="h264_decoder"
1916 h264_vda_decoder_deps="vda"
1917 h264_vda_decoder_select="h264_decoder"
1918 h264_vda_hwaccel_deps="vda"
1919 h264_vda_hwaccel_select="h264_decoder"
1920 h264_vdpau_decoder_deps="vdpau"
1921 h264_vdpau_decoder_select="h264_decoder"
1922 h264_vdpau_hwaccel_deps="vdpau"
1923 h264_vdpau_hwaccel_select="h264_decoder"
1924 mpeg_vdpau_decoder_deps="vdpau"
1925 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1926 mpeg1_vdpau_decoder_deps="vdpau"
1927 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1928 mpeg1_vdpau_hwaccel_deps="vdpau"
1929 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1930 mpeg2_crystalhd_decoder_select="crystalhd"
1931 mpeg2_dxva2_hwaccel_deps="dxva2"
1932 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1933 mpeg2_vaapi_hwaccel_deps="vaapi"
1934 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1935 mpeg2_vdpau_hwaccel_deps="vdpau"
1936 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1937 mpeg4_crystalhd_decoder_select="crystalhd"
1938 mpeg4_vaapi_hwaccel_deps="vaapi"
1939 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1940 mpeg4_vdpau_decoder_deps="vdpau"
1941 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1942 mpeg4_vdpau_hwaccel_deps="vdpau"
1943 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1944 msmpeg4_crystalhd_decoder_select="crystalhd"
1945 vc1_crystalhd_decoder_select="crystalhd"
1946 vc1_dxva2_hwaccel_deps="dxva2"
1947 vc1_dxva2_hwaccel_select="vc1_decoder"
1948 vc1_vaapi_hwaccel_deps="vaapi"
1949 vc1_vaapi_hwaccel_select="vc1_decoder"
1950 vc1_vdpau_decoder_deps="vdpau"
1951 vc1_vdpau_decoder_select="vc1_decoder"
1952 vc1_vdpau_hwaccel_deps="vdpau"
1953 vc1_vdpau_hwaccel_select="vc1_decoder"
1954 wmv3_crystalhd_decoder_select="crystalhd"
1955 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1956 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1957 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1958 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1959
1960 # parsers
1961 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1962 mpeg4video_parser_select="error_resilience mpegvideo"
1963 mpegvideo_parser_select="error_resilience mpegvideo"
1964 vc1_parser_select="mpegvideo"
1965
1966 # external libraries
1967 libaacplus_encoder_deps="libaacplus"
1968 libcelt_decoder_deps="libcelt"
1969 libfaac_encoder_deps="libfaac"
1970 libfaac_encoder_select="audio_frame_queue"
1971 libfdk_aac_encoder_deps="libfdk_aac"
1972 libfdk_aac_encoder_select="audio_frame_queue"
1973 libgsm_decoder_deps="libgsm"
1974 libgsm_encoder_deps="libgsm"
1975 libgsm_ms_decoder_deps="libgsm"
1976 libgsm_ms_encoder_deps="libgsm"
1977 libilbc_decoder_deps="libilbc"
1978 libilbc_encoder_deps="libilbc"
1979 libmodplug_demuxer_deps="libmodplug"
1980 libmp3lame_encoder_deps="libmp3lame"
1981 libmp3lame_encoder_select="audio_frame_queue"
1982 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1983 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1984 libopencore_amrnb_encoder_select="audio_frame_queue"
1985 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1986 libopenjpeg_decoder_deps="libopenjpeg"
1987 libopenjpeg_encoder_deps="libopenjpeg"
1988 libopus_decoder_deps="libopus"
1989 libopus_encoder_deps="libopus"
1990 libopus_encoder_select="audio_frame_queue"
1991 libquvi_demuxer_deps="libquvi"
1992 libschroedinger_decoder_deps="libschroedinger"
1993 libschroedinger_encoder_deps="libschroedinger"
1994 libshine_encoder_deps="libshine"
1995 libshine_encoder_select="audio_frame_queue"
1996 libspeex_decoder_deps="libspeex"
1997 libspeex_encoder_deps="libspeex"
1998 libspeex_encoder_select="audio_frame_queue"
1999 libstagefright_h264_decoder_deps="libstagefright_h264"
2000 libtheora_encoder_deps="libtheora"
2001 libtwolame_encoder_deps="libtwolame"
2002 libvo_aacenc_encoder_deps="libvo_aacenc"
2003 libvo_aacenc_encoder_select="audio_frame_queue"
2004 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2005 libvorbis_decoder_deps="libvorbis"
2006 libvorbis_encoder_deps="libvorbis"
2007 libvorbis_encoder_select="audio_frame_queue"
2008 libvpx_vp8_decoder_deps="libvpx"
2009 libvpx_vp8_encoder_deps="libvpx"
2010 libvpx_vp9_decoder_deps="libvpx"
2011 libvpx_vp9_encoder_deps="libvpx"
2012 libx264_encoder_deps="libx264"
2013 libx264rgb_encoder_deps="libx264"
2014 libxavs_encoder_deps="libxavs"
2015 libxvid_encoder_deps="libxvid"
2016 libutvideo_decoder_deps="libutvideo"
2017 libutvideo_encoder_deps="libutvideo"
2018
2019 # demuxers / muxers
2020 ac3_demuxer_select="ac3_parser"
2021 asf_stream_muxer_select="asf_muxer"
2022 avisynth_demuxer_deps="avisynth"
2023 dirac_demuxer_select="dirac_parser"
2024 dts_demuxer_select="dca_parser"
2025 dtshd_demuxer_select="dca_parser"
2026 eac3_demuxer_select="ac3_parser"
2027 f4v_muxer_select="mov_muxer"
2028 flac_demuxer_select="flac_parser"
2029 ipod_muxer_select="mov_muxer"
2030 ismv_muxer_select="mov_muxer"
2031 libnut_demuxer_deps="libnut"
2032 libnut_muxer_deps="libnut"
2033 matroska_audio_muxer_select="matroska_muxer"
2034 matroska_demuxer_suggest="bzlib lzo zlib"
2035 mov_demuxer_suggest="zlib"
2036 mov_muxer_select="rtpenc_chain"
2037 mp3_demuxer_select="mpegaudio_parser"
2038 mp4_muxer_select="mov_muxer"
2039 mpegts_muxer_select="adts_muxer latm_muxer"
2040 mpegtsraw_demuxer_select="mpegts_demuxer"
2041 mxf_d10_muxer_select="mxf_muxer"
2042 ogg_demuxer_select="golomb"
2043 psp_muxer_select="mov_muxer"
2044 rtp_demuxer_select="sdp_demuxer"
2045 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2046 rtsp_demuxer_select="http_protocol rtpdec"
2047 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2048 sap_demuxer_select="sdp_demuxer"
2049 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2050 sdp_demuxer_select="rtpdec"
2051 smoothstreaming_muxer_select="ismv_muxer"
2052 spdif_muxer_select="aac_parser"
2053 tak_demuxer_select="tak_parser"
2054 tg2_muxer_select="mov_muxer"
2055 tgp_muxer_select="mov_muxer"
2056 vobsub_demuxer_select="mpegps_demuxer"
2057 w64_demuxer_deps="wav_demuxer"
2058 w64_muxer_deps="wav_muxer"
2059
2060 # indevs / outdevs
2061 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2062 alsa_outdev_deps="alsa_asoundlib_h"
2063 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2064 caca_outdev_deps="libcaca"
2065 dshow_indev_deps="IBaseFilter"
2066 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2067 dv1394_indev_deps="dv1394 dv_demuxer"
2068 fbdev_indev_deps="linux_fb_h"
2069 iec61883_indev_deps="libiec61883"
2070 jack_indev_deps="jack_jack_h sem_timedwait"
2071 lavfi_indev_deps="avfilter"
2072 libcdio_indev_deps="libcdio"
2073 libdc1394_indev_deps="libdc1394"
2074 libv4l2_indev_deps="libv4l2"
2075 openal_indev_deps="openal"
2076 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2077 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2078 pulse_indev_deps="libpulse"
2079 sdl_outdev_deps="sdl"
2080 sndio_indev_deps="sndio_h"
2081 sndio_outdev_deps="sndio_h"
2082 v4l_indev_deps="linux_videodev_h"
2083 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2084 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2085 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2086 vfwcap_indev_extralibs="-lavicap32"
2087 x11grab_indev_deps="x11grab"
2088
2089 # protocols
2090 bluray_protocol_deps="libbluray"
2091 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2092 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2093 ffrtmpcrypt_protocol_select="tcp_protocol"
2094 ffrtmphttp_protocol_deps="!librtmp_protocol"
2095 ffrtmphttp_protocol_select="http_protocol"
2096 ftp_protocol_select="tcp_protocol"
2097 gopher_protocol_select="network"
2098 httpproxy_protocol_select="tcp_protocol"
2099 http_protocol_select="tcp_protocol"
2100 https_protocol_select="tls_protocol"
2101 librtmp_protocol_deps="librtmp"
2102 librtmpe_protocol_deps="librtmp"
2103 librtmps_protocol_deps="librtmp"
2104 librtmpt_protocol_deps="librtmp"
2105 librtmpte_protocol_deps="librtmp"
2106 mmsh_protocol_select="http_protocol"
2107 mmst_protocol_select="network"
2108 rtmp_protocol_deps="!librtmp_protocol"
2109 rtmp_protocol_select="tcp_protocol"
2110 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2111 rtmps_protocol_deps="!librtmp_protocol"
2112 rtmps_protocol_select="tls_protocol"
2113 rtmpt_protocol_select="ffrtmphttp_protocol"
2114 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2115 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2116 rtp_protocol_select="udp_protocol"
2117 sctp_protocol_deps="struct_sctp_event_subscribe"
2118 sctp_protocol_select="network"
2119 srtp_protocol_select="rtp_protocol"
2120 tcp_protocol_select="network"
2121 tls_protocol_deps_any="openssl gnutls"
2122 tls_protocol_select="tcp_protocol"
2123 udp_protocol_select="network"
2124
2125 # filters
2126 aconvert_filter_deps="swresample"
2127 amovie_filter_deps="avcodec avformat"
2128 aresample_filter_deps="swresample"
2129 ass_filter_deps="libass"
2130 asyncts_filter_deps="avresample"
2131 atempo_filter_deps="avcodec rdft"
2132 azmq_filter_deps="libzmq"
2133 blackframe_filter_deps="gpl"
2134 boxblur_filter_deps="gpl"
2135 colormatrix_filter_deps="gpl"
2136 cropdetect_filter_deps="gpl"
2137 dctdnoiz_filter_deps="avcodec fft"
2138 delogo_filter_deps="gpl"
2139 deshake_filter_deps="avcodec"
2140 deshake_filter_select="dsputil"
2141 drawtext_filter_deps="libfreetype"
2142 ebur128_filter_deps="gpl"
2143 flite_filter_deps="libflite"
2144 frei0r_filter_deps="frei0r dlopen"
2145 frei0r_filter_extralibs='$ldl'
2146 frei0r_src_filter_deps="frei0r dlopen"
2147 frei0r_src_filter_extralibs='$ldl'
2148 geq_filter_deps="gpl"
2149 histeq_filter_deps="gpl"
2150 hqdn3d_filter_deps="gpl"
2151 hue_filter_deps="gpl"
2152 interlace_filter_deps="gpl"
2153 kerndeint_filter_deps="gpl"
2154 movie_filter_deps="avcodec avformat"
2155 mp_filter_deps="gpl avcodec swscale inline_asm"
2156 mpdecimate_filter_deps="gpl avcodec"
2157 mptestsrc_filter_deps="gpl"
2158 negate_filter_deps="lut_filter"
2159 noise_filter_deps="gpl"
2160 resample_filter_deps="avresample"
2161 ocv_filter_deps="libopencv"
2162 owdenoise_filter_deps="gpl"
2163 pan_filter_deps="swresample"
2164 pp_filter_deps="gpl postproc"
2165 removelogo_filter_deps="avcodec avformat swscale"
2166 scale_filter_deps="swscale"
2167 smartblur_filter_deps="gpl swscale"
2168 showspectrum_filter_deps="avcodec rdft"
2169 stereo3d_filter_deps="gpl"
2170 subtitles_filter_deps="avformat avcodec libass"
2171 super2xsai_filter_deps="gpl"
2172 tinterlace_filter_deps="gpl"
2173 vidstabdetect_filter_deps="libvidstab"
2174 vidstabtransform_filter_deps="libvidstab"
2175 yadif_filter_deps="gpl"
2176 pixfmts_super2xsai_test_deps="super2xsai_filter"
2177 tinterlace_merge_test_deps="tinterlace_filter"
2178 tinterlace_pad_test_deps="tinterlace_filter"
2179 zmq_filter_deps="libzmq"
2180
2181 # libraries
2182 avcodec_deps="avutil"
2183 avdevice_deps="avutil avcodec avformat"
2184 avfilter_deps="avutil"
2185 avformat_deps="avutil avcodec"
2186 avresample_deps="avutil"
2187 postproc_deps="avutil gpl"
2188 swscale_deps="avutil"
2189
2190 # programs
2191 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2192 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2193                null_filter
2194                setpts_filter trim_filter"
2195 ffplay_deps="avcodec avformat swscale swresample sdl"
2196 ffplay_select="rdft crop_filter"
2197 ffprobe_deps="avcodec avformat"
2198 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
2199 ffserver_extralibs='$ldl'
2200
2201 # documentation
2202 podpages_deps="perl"
2203 manpages_deps="perl pod2man"
2204 htmlpages_deps="texi2html"
2205 txtpages_deps="makeinfo"
2206 doc_deps_any="manpages htmlpages podpages txtpages"
2207
2208 # default parameters
2209
2210 logfile="config.log"
2211
2212 # installation paths
2213 prefix_default="/usr/local"
2214 bindir_default='${prefix}/bin'
2215 datadir_default='${prefix}/share/ffmpeg'
2216 incdir_default='${prefix}/include'
2217 libdir_default='${prefix}/lib'
2218 mandir_default='${prefix}/share/man'
2219 shlibdir_default="$libdir_default"
2220
2221 # toolchain
2222 ar_default="ar"
2223 cc_default="gcc"
2224 cxx_default="g++"
2225 host_cc_default="gcc"
2226 cp_f="cp -f"
2227 install="install"
2228 ln_s="ln -s -f"
2229 nm_default="nm -g"
2230 objformat="elf"
2231 pkg_config_default=pkg-config
2232 ranlib="ranlib"
2233 strip_default="strip"
2234 yasmexe_default="yasm"
2235
2236 nogas=":"
2237
2238 # machine
2239 arch_default=$(uname -m)
2240 cpu="generic"
2241
2242 # OS
2243 target_os_default=$(tolower $(uname -s))
2244 host_os=$target_os_default
2245
2246 # configurable options
2247 enable $PROGRAM_LIST
2248 enable $DOCUMENT_LIST
2249 enable $(filter_out avresample $LIBRARY_LIST)
2250 enable stripping
2251
2252 enable asm
2253 enable debug
2254 enable doc
2255 enable optimizations
2256 enable runtime_cpudetect
2257 enable safe_bitstream_reader
2258 enable static
2259 enable swscale_alpha
2260
2261 # Enable hwaccels by default.
2262 enable dxva2 vaapi vdpau
2263
2264 # build settings
2265 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2266 FFSERVERLDFLAGS=-Wl,-E
2267 LIBPREF="lib"
2268 LIBSUF=".a"
2269 FULLNAME='$(NAME)$(BUILDSUF)'
2270 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2271 SLIBPREF="lib"
2272 SLIBSUF=".so"
2273 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2274 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2275 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2276 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2277 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2278 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2279
2280 asflags_filter=echo
2281 cflags_filter=echo
2282 ldflags_filter=echo
2283
2284 AS_C='-c'
2285 AS_O='-o $@'
2286 CC_C='-c'
2287 CC_E='-E -o $@'
2288 CC_O='-o $@'
2289 CXX_C='-c'
2290 CXX_O='-o $@'
2291 LD_O='-o $@'
2292 LD_LIB='-l%'
2293 LD_PATH='-L'
2294 HOSTCC_C='-c'
2295 HOSTCC_O='-o $@'
2296 HOSTLD_O='-o $@'
2297
2298 host_cflags='-O3 -g'
2299 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2300 host_libs='-lm'
2301 host_cflags_filter=echo
2302 host_ldflags_filter=echo
2303
2304 target_path='$(CURDIR)'
2305
2306 # since the object filename is not given with the -MM flag, the compiler
2307 # is only able to print the basename, and we must add the path ourselves
2308 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2309 DEPFLAGS='-MM'
2310
2311 # find source path
2312 if test -f configure; then
2313     source_path=.
2314 else
2315     source_path=$(cd $(dirname "$0"); pwd)
2316     echo "$source_path" | grep -q '[[:blank:]]' &&
2317         die "Out of tree builds are impossible with whitespace in source path."
2318     test -e "$source_path/config.h" &&
2319         die "Out of tree builds are impossible with config.h in source dir."
2320 fi
2321
2322 for v in "$@"; do
2323     r=${v#*=}
2324     l=${v%"$r"}
2325     r=$(sh_quote "$r")
2326     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2327 done
2328
2329 find_things(){
2330     thing=$1
2331     pattern=$2
2332     file=$source_path/$3
2333     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2334 }
2335
2336 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2337 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2338 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2339 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2340 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2341 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2342 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2343 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2344 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2345 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2346 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2347
2348 ALL_COMPONENTS="
2349     $BSF_LIST
2350     $DECODER_LIST
2351     $DEMUXER_LIST
2352     $ENCODER_LIST
2353     $FILTER_LIST
2354     $HWACCEL_LIST
2355     $INDEV_LIST
2356     $MUXER_LIST
2357     $OUTDEV_LIST
2358     $PARSER_LIST
2359     $PROTOCOL_LIST
2360 "
2361
2362 for n in $COMPONENT_LIST; do
2363     v=$(toupper ${n%s})_LIST
2364     eval enable \$$v
2365     eval ${n}_if_any="\$$v"
2366 done
2367
2368 enable $ARCH_EXT_LIST
2369
2370 die_unknown(){
2371     echo "Unknown option \"$1\"."
2372     echo "See $0 --help for available options."
2373     exit 1
2374 }
2375
2376 print_3_columns() {
2377     cat | tr ' ' '\n' | sort | pr -r -3 -t
2378 }
2379
2380 show_list() {
2381     suffix=_$1
2382     shift
2383     echo $* | sed s/$suffix//g | print_3_columns
2384     exit 0
2385 }
2386
2387 rand_list(){
2388     IFS=', '
2389     set -- $*
2390     unset IFS
2391     for thing; do
2392         comp=${thing%:*}
2393         prob=${thing#$comp}
2394         prob=${prob#:}
2395         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2396         echo "prob ${prob:-0.5}"
2397         printf '%s\n' $comp
2398     done
2399 }
2400
2401 do_random(){
2402     action=$1
2403     shift
2404     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2405     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2406 }
2407
2408 for opt do
2409     optval="${opt#*=}"
2410     case "$opt" in
2411         --extra-ldflags=*)
2412             add_ldflags $optval
2413         ;;
2414         --extra-libs=*)
2415             add_extralibs $optval
2416         ;;
2417         --disable-devices)
2418             disable $INDEV_LIST $OUTDEV_LIST
2419         ;;
2420         --enable-debug=*)
2421             debuglevel="$optval"
2422         ;;
2423         --disable-programs)
2424             disable $PROGRAM_LIST
2425         ;;
2426         --disable-everything)
2427             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2428         ;;
2429         --disable-all)
2430             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2431             disable $LIBRARY_LIST $PROGRAM_LIST doc
2432         ;;
2433         --enable-random|--disable-random)
2434             action=${opt%%-random}
2435             do_random ${action#--} $COMPONENT_LIST
2436         ;;
2437         --enable-random=*|--disable-random=*)
2438             action=${opt%%-random=*}
2439             do_random ${action#--} $optval
2440         ;;
2441         --enable-*=*|--disable-*=*)
2442             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2443             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2444             eval list=\$$(toupper $thing)_LIST
2445             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2446             list=$(filter "$name" $list)
2447             [ "$list" = "" ] && warn "Option $opt did not match anything"
2448             $action $list
2449         ;;
2450         --enable-?*|--disable-?*)
2451             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2452             if is_in $option $COMPONENT_LIST; then
2453                 test $action = disable && action=unset
2454                 eval $action \$$(toupper ${option%s})_LIST
2455             elif is_in $option $CMDLINE_SELECT; then
2456                 $action $option
2457             else
2458                 die_unknown $opt
2459             fi
2460         ;;
2461         --list-*)
2462             NAME="${opt#--list-}"
2463             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2464             NAME=${NAME%s}
2465             eval show_list $NAME \$$(toupper $NAME)_LIST
2466         ;;
2467         --help|-h) show_help
2468         ;;
2469         --fatal-warnings) enable fatal_warnings
2470         ;;
2471         *)
2472             optname="${opt%%=*}"
2473             optname="${optname#--}"
2474             optname=$(echo "$optname" | sed 's/-/_/g')
2475             if is_in $optname $CMDLINE_SET; then
2476                 eval $optname='$optval'
2477             elif is_in $optname $CMDLINE_APPEND; then
2478                 append $optname "$optval"
2479             else
2480                 die_unknown $opt
2481             fi
2482         ;;
2483     esac
2484 done
2485
2486 disabled logging && logfile=/dev/null
2487
2488 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2489 set >> $logfile
2490
2491 test -n "$cross_prefix" && enable cross_compile
2492
2493 if enabled cross_compile; then
2494     test -n "$arch" && test -n "$target_os" ||
2495         die "Must specify target arch and OS when cross-compiling"
2496 fi
2497
2498 ar_default="${cross_prefix}${ar_default}"
2499 cc_default="${cross_prefix}${cc_default}"
2500 cxx_default="${cross_prefix}${cxx_default}"
2501 nm_default="${cross_prefix}${nm_default}"
2502 pkg_config_default="${cross_prefix}${pkg_config_default}"
2503 ranlib="${cross_prefix}${ranlib}"
2504 strip_default="${cross_prefix}${strip_default}"
2505
2506 sysinclude_default="${sysroot}/usr/include"
2507
2508 test -n "$valgrind" && toolchain="valgrind-memcheck"
2509
2510 case "$toolchain" in
2511     clang-asan)
2512         cc_default="clang"
2513         add_cflags  -fsanitize=address
2514         add_ldflags -fsanitize=address
2515     ;;
2516     clang-tsan)
2517         cc_default="clang"
2518         add_cflags  -fsanitize=thread -pie
2519         add_ldflags -fsanitize=thread -pie
2520     ;;
2521     gcc-asan)
2522         cc_default="gcc"
2523         add_cflags  -fsanitize=address
2524         add_ldflags -fsanitize=address
2525     ;;
2526     gcc-tsan)
2527         cc_default="gcc"
2528         add_cflags  -fsanitize=thread -pie -fPIC
2529         add_ldflags -fsanitize=thread -pie -fPIC
2530     ;;
2531     valgrind-massif)
2532         target_exec_default=${valgrind:-"valgrind"}
2533         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"
2534     ;;
2535     valgrind-memcheck)
2536         target_exec_default=${valgrind:-"valgrind"}
2537         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2538     ;;
2539     msvc)
2540         cc_default="c99wrap cl"
2541         ld_default="c99wrap link"
2542         nm_default="dumpbin -symbols"
2543         ar_default="lib"
2544         target_os_default="win32"
2545     ;;
2546     icl)
2547         cc_default="c99wrap -noconv icl"
2548         ld_default="c99wrap xilink"
2549         nm_default="dumpbin -symbols"
2550         ar_default="xilib"
2551         target_os_default="win32"
2552     ;;
2553     gcov)
2554         add_cflags  -fprofile-arcs -ftest-coverage
2555         add_ldflags -fprofile-arcs -ftest-coverage
2556     ;;
2557     ?*)
2558         die "Unknown toolchain $toolchain"
2559     ;;
2560 esac
2561
2562 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2563 enabled cross_compile || host_cc_default=$cc
2564 set_default host_cc
2565
2566 if ! $pkg_config --version >/dev/null 2>&1; then
2567     warn "$pkg_config not found, library detection may fail."
2568     pkg_config=false
2569 fi
2570
2571 exesuf() {
2572     case $1 in
2573         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2574     esac
2575 }
2576
2577 EXESUF=$(exesuf $target_os)
2578 HOSTEXESUF=$(exesuf $host_os)
2579
2580 # set temporary file name
2581 : ${TMPDIR:=$TEMPDIR}
2582 : ${TMPDIR:=$TMP}
2583 : ${TMPDIR:=/tmp}
2584
2585 if ! check_cmd mktemp -u XXXXXX; then
2586     # simple replacement for missing mktemp
2587     # NOT SAFE FOR GENERAL USE
2588     mktemp(){
2589         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2590     }
2591 fi
2592
2593 tmpfile(){
2594     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2595         (set -C; exec > $tmp) 2>/dev/null ||
2596         die "Unable to create temporary file in $TMPDIR."
2597     append TMPFILES $tmp
2598     eval $1=$tmp
2599 }
2600
2601 trap 'rm -f -- $TMPFILES' EXIT
2602
2603 tmpfile TMPASM .asm
2604 tmpfile TMPC   .c
2605 tmpfile TMPCPP .cpp
2606 tmpfile TMPE   $EXESUF
2607 tmpfile TMPH   .h
2608 tmpfile TMPO   .o
2609 tmpfile TMPS   .S
2610 tmpfile TMPSH  .sh
2611 tmpfile TMPV   .ver
2612
2613 unset -f mktemp
2614
2615 chmod +x $TMPE
2616
2617 # make sure we can execute files in $TMPDIR
2618 cat > $TMPSH 2>> $logfile <<EOF
2619 #! /bin/sh
2620 EOF
2621 chmod +x $TMPSH >> $logfile 2>&1
2622 if ! $TMPSH >> $logfile 2>&1; then
2623     cat <<EOF
2624 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2625 variable to another directory and make sure that it is not mounted noexec.
2626 EOF
2627     die "Sanity test failed."
2628 fi
2629
2630 ccc_flags(){
2631     for flag; do
2632         case $flag in
2633             -std=c99)           echo -c99                       ;;
2634             -mcpu=*)            echo -arch ${flag#*=}           ;;
2635             -mieee)             echo -ieee                      ;;
2636             -O*|-fast)          echo $flag                      ;;
2637             -fno-math-errno)    echo -assume nomath_errno       ;;
2638             -g)                 echo -g3                        ;;
2639             -Wall)              echo -msg_enable level2         ;;
2640             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2641             -Wl,*)              echo $flag                      ;;
2642             -f*|-W*)                                            ;;
2643             *)                  echo $flag                      ;;
2644         esac
2645    done
2646 }
2647
2648 msvc_flags(){
2649     for flag; do
2650         case $flag in
2651             -fomit-frame-pointer) echo -Oy ;;
2652             -g)                   echo -Z7 ;;
2653             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2654                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2655                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2656                                        -wd4554 \
2657                                        -wd4996 -wd4273 ;;
2658             -std=c99)             ;;
2659             -fno-math-errno)      ;;
2660             -fno-common)          ;;
2661             -fno-signed-zeros)    ;;
2662             -fPIC)                ;;
2663             -lz)                  echo zlib.lib ;;
2664             -lavifil32)           echo vfw32.lib ;;
2665             -lavicap32)           echo vfw32.lib user32.lib ;;
2666             -l*)                  echo ${flag#-l}.lib ;;
2667             *)                    echo $flag ;;
2668         esac
2669     done
2670 }
2671
2672 pgi_flags(){
2673     for flag; do
2674         case $flag in
2675             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2676             -fomit-frame-pointer) echo -Mnoframe ;;
2677             -g)                   echo -gopt ;;
2678             *)                    echo $flag ;;
2679         esac
2680     done
2681 }
2682
2683 suncc_flags(){
2684     for flag; do
2685         case $flag in
2686             -march=*|-mcpu=*)
2687                 case "${flag#*=}" in
2688                     native)                   echo -xtarget=native       ;;
2689                     v9|niagara)               echo -xarch=sparc          ;;
2690                     ultrasparc)               echo -xarch=sparcvis       ;;
2691                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2692                     i586|pentium)             echo -xchip=pentium        ;;
2693                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2694                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2695                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2696                     pentium4*)          echo -xtarget=pentium4           ;;
2697                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2698                     *-sse3)             echo -xarch=sse3                 ;;
2699                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2700                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2701                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2702                     amdfam10|barcelona)       echo -xtarget=barcelona    ;;
2703                     bdver*)                   echo -xarch=avx            ;;
2704                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2705                     k8|opteron|athlon64|athlon-fx)
2706                                               echo -xarch=sse2a          ;;
2707                     athlon*)                  echo -xarch=pentium_proa   ;;
2708                 esac
2709                 ;;
2710             -std=c99)             echo -xc99              ;;
2711             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2712             -fPIC)                echo -KPIC -xcode=pic32 ;;
2713             -W*,*)                echo $flag              ;;
2714             -f*-*|-W*|-mimpure-text)                      ;;
2715             -shared)              echo -G                 ;;
2716             *)                    echo $flag              ;;
2717         esac
2718     done
2719 }
2720
2721 tms470_flags(){
2722     for flag; do
2723         case $flag in
2724             -march=*|-mcpu=*)
2725                 case "${flag#*=}" in
2726                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2727                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2728                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2729                     armv6*|arm11*)          echo -mv=6   ;;
2730                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2731                                             echo -mv=5e  ;;
2732                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2733                 esac
2734                 ;;
2735             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2736             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2737             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2738             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2739             -msoft-float)   echo --float_support=vfplib       ;;
2740             -O[0-3]|-mf=*)  echo $flag                        ;;
2741             -g)             echo -g -mn                       ;;
2742             -pds=*)         echo $flag                        ;;
2743             -D*|-I*)        echo $flag                        ;;
2744             --gcc|--abi=*)  echo $flag                        ;;
2745             -me)            echo $flag                        ;;
2746         esac
2747     done
2748 }
2749
2750 probe_cc(){
2751     pfx=$1
2752     _cc=$2
2753
2754     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2755     unset _ld_o _ldflags _ld_lib _ld_path
2756     unset _depflags _DEPCMD _DEPFLAGS
2757     _flags_filter=echo
2758
2759     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2760         _type=llvm_gcc
2761         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2762         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2763         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2764         _cflags_speed='-O3'
2765         _cflags_size='-Os'
2766     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2767         _type=gcc
2768         gcc_version=$($_cc --version | head -n1)
2769         gcc_basever=$($_cc -dumpversion)
2770         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2771         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2772         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2773         if ! $_cc -dumpversion | grep -q '^2\.'; then
2774             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2775         fi
2776         _cflags_speed='-O3'
2777         _cflags_size='-Os'
2778     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2779         _type=icc
2780         _ident=$($_cc --version | head -n1)
2781         _depflags='-MMD'
2782         _cflags_speed='-O3'
2783         _cflags_size='-Os'
2784         _cflags_noopt='-O1'
2785     elif $_cc -v 2>&1 | grep -q xlc; then
2786         _type=xlc
2787         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2788         _cflags_speed='-O5'
2789         _cflags_size='-O5 -qcompact'
2790     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2791         _type=ccc
2792         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2793         _DEPFLAGS='-M'
2794         _cflags_speed='-fast'
2795         _cflags_size='-O1'
2796         _flags_filter=ccc_flags
2797     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2798         test -d "$sysroot" || die "No valid sysroot specified."
2799         _type=armcc
2800         _ident=$($_cc --vsn | head -n1)
2801         armcc_conf="$PWD/armcc.conf"
2802         $_cc --arm_linux_configure                 \
2803              --arm_linux_config_file="$armcc_conf" \
2804              --configure_sysroot="$sysroot"        \
2805              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2806              die "Error creating armcc configuration file."
2807         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2808         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2809         as_default="${cross_prefix}gcc"
2810         _depflags='-MMD'
2811         _cflags_speed='-O3'
2812         _cflags_size='-Os'
2813     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2814         _type=tms470
2815         _ident=$($_cc -version | head -n1 | tr -s ' ')
2816         _flags='--gcc --abi=eabi -me'
2817         _cc_e='-ppl -fe=$@'
2818         _cc_o='-fe=$@'
2819         _depflags='-ppa -ppd=$(@:.o=.d)'
2820         _cflags_speed='-O3 -mf=5'
2821         _cflags_size='-O3 -mf=2'
2822         _flags_filter=tms470_flags
2823     elif $_cc -v 2>&1 | grep -q clang; then
2824         _type=clang
2825         _ident=$($_cc --version | head -n1)
2826         _depflags='-MMD'
2827         _cflags_speed='-O3'
2828         _cflags_size='-Os'
2829     elif $_cc -V 2>&1 | grep -q Sun; then
2830         _type=suncc
2831         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2832         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2833         _DEPFLAGS='-xM1 -xc99'
2834         _ldflags='-std=c99'
2835         _cflags_speed='-O5'
2836         _cflags_size='-O5 -xspace'
2837         _flags_filter=suncc_flags
2838     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2839         _type=pathscale
2840         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2841         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2842         _cflags_speed='-O2'
2843         _cflags_size='-Os'
2844         _flags_filter='filter_out -Wdisabled-optimization'
2845     elif $_cc -v 2>&1 | grep -q Open64; then
2846         _type=open64
2847         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2848         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2849         _cflags_speed='-O2'
2850         _cflags_size='-Os'
2851         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2852     elif $_cc -V 2>&1 | grep -q Portland; then
2853         _type=pgi
2854         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2855         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2856         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2857         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2858         _cflags_noopt="-O"
2859         _flags_filter=pgi_flags
2860     elif $_cc 2>&1 | grep -q Microsoft; then
2861         _type=msvc
2862         _ident=$($cc 2>&1 | head -n1)
2863         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2864         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2865         _cflags_speed="-O2"
2866         _cflags_size="-O1"
2867         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2868         if $_cc 2>&1 | grep -q Linker; then
2869             _ld_o='-out $@'
2870         else
2871             _ld_o='-Fe$@'
2872         fi
2873         _cc_o='-Fo $@'
2874         _cc_e='-P -Fi $@'
2875         _flags_filter=msvc_flags
2876         _ld_lib='lib%.a'
2877         _ld_path='-libpath:'
2878         _flags='-nologo'
2879         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2880         if [ $pfx = hostcc ]; then
2881             append _cflags -Dsnprintf=_snprintf
2882         fi
2883         disable stripping
2884     elif $_cc 2>&1 | grep -q Intel; then
2885         _type=icl
2886         _ident=$($cc 2>&1 | head -n1)
2887         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2888         # Not only is O3 broken on 13.x+ but it's slower on all previous versions (tested) as well
2889         _cflags_speed="-O2"
2890         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2891         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2892         if $_cc 2>&1 | grep -q Linker; then
2893             _ld_o='-out $@'
2894         else
2895             _ld_o='-Fe$@'
2896         fi
2897         _cc_o='-Fo $@'
2898         _cc_e='-P'
2899         _flags_filter=msvc_flags
2900         _ld_lib='lib%.a'
2901         _ld_path='-libpath:'
2902         # -Qdiag-error to make icl error when presented with certain unknown arguments
2903         _flags='-nologo -Qdiag-error:10157 -Qdiag-error:4044'
2904         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency with msvc which enables it by default
2905         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64 -Qstd=c99 -Qms0 -Qvec- -Qsimd- -GS'
2906         if [ $pfx = hostcc ]; then
2907             append _cflags -Dsnprintf=_snprintf
2908         fi
2909     fi
2910
2911     eval ${pfx}_type=\$_type
2912     eval ${pfx}_ident=\$_ident
2913 }
2914
2915 set_ccvars(){
2916     eval ${1}_C=\${_cc_c-\${${1}_C}}
2917     eval ${1}_E=\${_cc_e-\${${1}_E}}
2918     eval ${1}_O=\${_cc_o-\${${1}_O}}
2919
2920     if [ -n "$_depflags" ]; then
2921         eval ${1}_DEPFLAGS=\$_depflags
2922     else
2923         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2924         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2925         eval DEP${1}FLAGS=\$_flags
2926     fi
2927 }
2928
2929 probe_cc cc "$cc"
2930 cflags_filter=$_flags_filter
2931 cflags_speed=$_cflags_speed
2932 cflags_size=$_cflags_size
2933 cflags_noopt=$_cflags_noopt
2934 add_cflags $_flags $_cflags
2935 cc_ldflags=$_ldflags
2936 set_ccvars CC
2937
2938 probe_cc hostcc "$host_cc"
2939 host_cflags_filter=$_flags_filter
2940 add_host_cflags  $_flags $_cflags
2941 set_ccvars HOSTCC
2942
2943 test -n "$cc_type" && enable $cc_type ||
2944     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2945
2946 : ${as_default:=$cc}
2947 : ${dep_cc_default:=$cc}
2948 : ${ld_default:=$cc}
2949 : ${host_ld_default:=$host_cc}
2950 set_default ar as dep_cc ld host_ld
2951
2952 probe_cc as "$as"
2953 asflags_filter=$_flags_filter
2954 add_asflags $_flags $_cflags
2955 set_ccvars AS
2956
2957 probe_cc ld "$ld"
2958 ldflags_filter=$_flags_filter
2959 add_ldflags $_flags $_ldflags
2960 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2961 LD_O=${_ld_o-$LD_O}
2962 LD_LIB=${_ld_lib-$LD_LIB}
2963 LD_PATH=${_ld_path-$LD_PATH}
2964
2965 probe_cc hostld "$host_ld"
2966 host_ldflags_filter=$_flags_filter
2967 add_host_ldflags $_flags $_ldflags
2968 HOSTLD_O=${_ld_o-$HOSTLD_O}
2969
2970 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2971     probe_cc depcc "$dep_cc"
2972     CCDEP=${_DEPCMD:-$DEPCMD}
2973     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2974     DEPCCFLAGS=$_flags
2975 fi
2976
2977 if $ar 2>&1 | grep -q Microsoft; then
2978     arflags="-nologo"
2979     ar_o='-out:$@'
2980 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2981     arflags="rq"
2982     ar_o='$@'
2983 else
2984     arflags="rc"
2985     ar_o='$@'
2986 fi
2987
2988 add_cflags $extra_cflags
2989 add_cxxflags $extra_cxxflags
2990 add_asflags $extra_cflags
2991
2992 if test -n "$sysroot"; then
2993     case "$cc_type" in
2994         gcc|llvm_gcc|clang)
2995             add_cppflags --sysroot="$sysroot"
2996             add_ldflags --sysroot="$sysroot"
2997         ;;
2998         tms470)
2999             add_cppflags -I"$sysinclude"
3000             add_ldflags  --sysroot="$sysroot"
3001         ;;
3002     esac
3003 fi
3004
3005 if test "$cpu" = host; then
3006     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
3007
3008     case "$cc_type" in
3009         gcc|llvm_gcc)
3010             check_native(){
3011                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3012                 sed -n "/cc1.*$1=/{
3013                             s/.*$1=\\([^ ]*\\).*/\\1/
3014                             p
3015                             q
3016                         }" $TMPE
3017             }
3018             cpu=$(check_native -march || check_native -mcpu)
3019         ;;
3020     esac
3021
3022     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
3023 fi
3024
3025 # Deal with common $arch aliases
3026 case "$arch" in
3027     aarch64|arm64)
3028         arch="aarch64"
3029     ;;
3030     arm*|iPad*)
3031         arch="arm"
3032     ;;
3033     mips*|IP*)
3034         arch="mips"
3035     ;;
3036     parisc*|hppa*)
3037         arch="parisc"
3038     ;;
3039     "Power Macintosh"|ppc*|powerpc*)
3040         arch="ppc"
3041     ;;
3042     s390|s390x)
3043         arch="s390"
3044     ;;
3045     sh4|sh)
3046         arch="sh4"
3047     ;;
3048     sun4u|sparc*)
3049         arch="sparc"
3050     ;;
3051     tilegx|tile-gx)
3052         arch="tilegx"
3053     ;;
3054     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3055         arch="x86"
3056     ;;
3057 esac
3058
3059 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3060 enable $arch
3061
3062 # Add processor-specific flags
3063 if enabled aarch64; then
3064
3065     case $cpu in
3066         armv*)
3067             cpuflags="-march=$cpu"
3068         ;;
3069         *)
3070             cpuflags="-mcpu=$cpu"
3071         ;;
3072     esac
3073
3074 elif enabled alpha; then
3075
3076     cpuflags="-mcpu=$cpu"
3077
3078 elif enabled arm; then
3079
3080     check_arm_arch() {
3081         check_cpp_condition stddef.h \
3082             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3083             $cpuflags
3084     }
3085
3086     probe_arm_arch() {
3087         if   check_arm_arch 4;        then echo armv4;
3088         elif check_arm_arch 4T;       then echo armv4t;
3089         elif check_arm_arch 5;        then echo armv5;
3090         elif check_arm_arch 5E;       then echo armv5e;
3091         elif check_arm_arch 5T;       then echo armv5t;
3092         elif check_arm_arch 5TE;      then echo armv5te;
3093         elif check_arm_arch 5TEJ;     then echo armv5te;
3094         elif check_arm_arch 6;        then echo armv6;
3095         elif check_arm_arch 6J;       then echo armv6j;
3096         elif check_arm_arch 6K;       then echo armv6k;
3097         elif check_arm_arch 6Z;       then echo armv6z;
3098         elif check_arm_arch 6ZK;      then echo armv6zk;
3099         elif check_arm_arch 6T2;      then echo armv6t2;
3100         elif check_arm_arch 7;        then echo armv7;
3101         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3102         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3103         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3104         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3105         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3106         fi
3107     }
3108
3109     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3110
3111     case $cpu in
3112         armv*)
3113             cpuflags="-march=$cpu"
3114             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3115         ;;
3116         *)
3117             cpuflags="-mcpu=$cpu"
3118             case $cpu in
3119                 cortex-a*)                               subarch=armv7a  ;;
3120                 cortex-r*)                               subarch=armv7r  ;;
3121                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3122                 arm11*)                                  subarch=armv6   ;;
3123                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3124                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3125                 *)                             subarch=$(probe_arm_arch) ;;
3126             esac
3127         ;;
3128     esac
3129
3130     case "$subarch" in
3131         armv5t*)    enable fast_clz                ;;
3132         armv[6-8]*) enable fast_clz fast_unaligned ;;
3133     esac
3134
3135 elif enabled avr32; then
3136
3137     case $cpu in
3138         ap7[02]0[0-2])
3139             subarch="avr32_ap"
3140             cpuflags="-mpart=$cpu"
3141         ;;
3142         ap)
3143             subarch="avr32_ap"
3144             cpuflags="-march=$cpu"
3145         ;;
3146         uc3[ab]*)
3147             subarch="avr32_uc"
3148             cpuflags="-mcpu=$cpu"
3149         ;;
3150         uc)
3151             subarch="avr32_uc"
3152             cpuflags="-march=$cpu"
3153         ;;
3154     esac
3155
3156 elif enabled bfin; then
3157
3158     cpuflags="-mcpu=$cpu"
3159
3160 elif enabled mips; then
3161
3162     cpuflags="-march=$cpu"
3163
3164     case $cpu in
3165         24kc)
3166             disable mipsfpu
3167             disable mipsdspr1
3168             disable mipsdspr2
3169         ;;
3170         24kf*)
3171             disable mipsdspr1
3172             disable mipsdspr2
3173         ;;
3174         24kec|34kc|1004kc)
3175             disable mipsfpu
3176             disable mipsdspr2
3177         ;;
3178         24kef*|34kf*|1004kf*)
3179             disable mipsdspr2
3180         ;;
3181         74kc)
3182             disable mipsfpu
3183         ;;
3184     esac
3185
3186 elif enabled ppc; then
3187
3188     case $(tolower $cpu) in
3189         601|ppc601|powerpc601)
3190             cpuflags="-mcpu=601"
3191             disable altivec
3192         ;;
3193         603*|ppc603*|powerpc603*)
3194             cpuflags="-mcpu=603"
3195             disable altivec
3196         ;;
3197         604*|ppc604*|powerpc604*)
3198             cpuflags="-mcpu=604"
3199             disable altivec
3200         ;;
3201         g3|75*|ppc75*|powerpc75*)
3202             cpuflags="-mcpu=750"
3203             disable altivec
3204         ;;
3205         g4|745*|ppc745*|powerpc745*)
3206             cpuflags="-mcpu=7450"
3207         ;;
3208         74*|ppc74*|powerpc74*)
3209             cpuflags="-mcpu=7400"
3210         ;;
3211         g5|970|ppc970|powerpc970)
3212             cpuflags="-mcpu=970"
3213         ;;
3214         power[3-7]*)
3215             cpuflags="-mcpu=$cpu"
3216         ;;
3217         cell)
3218             cpuflags="-mcpu=cell"
3219             enable ldbrx
3220         ;;
3221         e500mc)
3222             cpuflags="-mcpu=e500mc"
3223             disable altivec
3224         ;;
3225         e500v2)
3226             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3227             disable altivec
3228         ;;
3229         e500)
3230             cpuflags="-mcpu=8540 -mhard-float"
3231             disable altivec
3232         ;;
3233     esac
3234
3235 elif enabled sparc; then
3236
3237     case $cpu in
3238         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3239             cpuflags="-mcpu=$cpu"
3240             disable vis
3241         ;;
3242         ultrasparc*|niagara[234])
3243             cpuflags="-mcpu=$cpu"
3244         ;;
3245     esac
3246
3247 elif enabled x86; then
3248
3249     case $cpu in
3250         i[345]86|pentium)
3251             cpuflags="-march=$cpu"
3252             disable mmx
3253         ;;
3254         # targets that do NOT support nopl and conditional mov (cmov)
3255         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3256             cpuflags="-march=$cpu"
3257             disable i686
3258         ;;
3259         # targets that do support nopl and conditional mov (cmov)
3260         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3261             cpuflags="-march=$cpu"
3262             enable i686
3263             enable fast_cmov
3264         ;;
3265         # targets that do support conditional mov but on which it's slow
3266         pentium4|pentium4m|prescott|nocona)
3267             cpuflags="-march=$cpu"
3268             enable i686
3269             disable fast_cmov
3270         ;;
3271     esac
3272
3273 fi
3274
3275 if [ "$cpu" != generic ]; then
3276     add_cflags  $cpuflags
3277     add_asflags $cpuflags
3278 fi
3279
3280 # compiler sanity check
3281 check_exec <<EOF
3282 int main(void){ return 0; }
3283 EOF
3284 if test "$?" != 0; then
3285     echo "$cc is unable to create an executable file."
3286     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3287         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3288         echo "Only do this if you know what cross compiling means."
3289     fi
3290     die "C compiler test failed."
3291 fi
3292
3293 add_cppflags -D_ISOC99_SOURCE
3294 add_cxxflags -D__STDC_CONSTANT_MACROS
3295 check_cflags -std=c99
3296 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3297 #include <stdlib.h>
3298 EOF
3299 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3300 #include <stdlib.h>
3301 EOF
3302
3303 check_host_cflags -std=c99
3304 check_host_cflags -Wall
3305
3306 check_64bit(){
3307     arch32=$1
3308     arch64=$2
3309     expr=$3
3310     check_code cc "" "int test[2*($expr) - 1]" &&
3311         subarch=$arch64 || subarch=$arch32
3312 }
3313
3314 case "$arch" in
3315     aarch64|alpha|ia64)
3316         spic=$shared
3317     ;;
3318     mips)
3319         check_64bit mips mips64 '_MIPS_SIM > 1'
3320         spic=$shared
3321     ;;
3322     parisc)
3323         check_64bit parisc parisc64 'sizeof(void *) > 4'
3324         spic=$shared
3325     ;;
3326     ppc)
3327         check_64bit ppc ppc64 'sizeof(void *) > 4'
3328         spic=$shared
3329     ;;
3330     sparc)
3331         check_64bit sparc sparc64 'sizeof(void *) > 4'
3332         spic=$shared
3333     ;;
3334     x86)
3335         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3336         if test "$subarch" = "x86_64"; then
3337             spic=$shared
3338         fi
3339     ;;
3340     ppc)
3341         check_cc <<EOF && subarch="ppc64"
3342         int test[(int)sizeof(char*) - 7];
3343 EOF
3344     ;;
3345 esac
3346
3347 enable $subarch
3348 enabled spic && enable_weak pic
3349
3350 # OS specific
3351 case $target_os in
3352     haiku)
3353         prefix_default="/boot/common"
3354         network_extralibs="-lnetwork"
3355         host_libs=
3356         ;;
3357     sunos)
3358         FFSERVERLDFLAGS=""
3359         SHFLAGS='-shared -Wl,-h,$$(@F)'
3360         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3361         network_extralibs="-lsocket -lnsl"
3362         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3363         # When using suncc to build, the Solaris linker will mark
3364         # an executable with each instruction set encountered by
3365         # the Solaris assembler.  As our libraries contain their own
3366         # guards for processor-specific code, instead suppress
3367         # generation of the HWCAPS ELF section on Solaris x86 only.
3368         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
3369         nm_default='nm -P -g'
3370         ;;
3371     netbsd)
3372         disable symver
3373         oss_indev_extralibs="-lossaudio"
3374         oss_outdev_extralibs="-lossaudio"
3375         enabled gcc || check_ldflags -Wl,-zmuldefs
3376         ;;
3377     openbsd|bitrig)
3378         disable symver
3379         SHFLAGS='-shared'
3380         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3381         SLIB_INSTALL_LINKS=
3382         oss_indev_extralibs="-lossaudio"
3383         oss_outdev_extralibs="-lossaudio"
3384         ;;
3385     dragonfly)
3386         disable symver
3387         ;;
3388     freebsd)
3389         ;;
3390     bsd/os)
3391         add_extralibs -lpoll -lgnugetopt
3392         strip="strip -d"
3393         ;;
3394     darwin)
3395         gas="gas-preprocessor.pl $cc"
3396         enabled ppc && add_asflags -force_cpusubtype_ALL
3397         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3398         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3399         strip="${strip} -x"
3400         add_ldflags -Wl,-dynamic,-search_paths_first
3401         SLIBSUF=".dylib"
3402         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3403         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3404         FFSERVERLDFLAGS=-Wl,-bind_at_load
3405         objformat="macho"
3406         enabled x86_64 && objformat="macho64"
3407         enabled_any pic shared ||
3408             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3409         ;;
3410     mingw32*)
3411         if test $target_os = "mingw32ce"; then
3412             disable network
3413         else
3414             target_os=mingw32
3415         fi
3416         LIBTARGET=i386
3417         if enabled x86_64; then
3418             LIBTARGET="i386:x86-64"
3419         elif enabled arm; then
3420             LIBTARGET=arm-wince
3421         fi
3422         check_ldflags -Wl,--nxcompat
3423         check_ldflags -Wl,--dynamicbase
3424         shlibdir_default="$bindir_default"
3425         SLIBPREF=""
3426         SLIBSUF=".dll"
3427         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3428         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3429         dlltool="${cross_prefix}dlltool"
3430         if check_cmd lib.exe -list; then
3431             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3432             if enabled x86_64; then
3433                 LIBTARGET=x64
3434             fi
3435         elif check_cmd $dlltool --version; then
3436             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3437         fi
3438         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3439         SLIB_INSTALL_LINKS=
3440         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3441         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3442         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3443         objformat="win32"
3444         ranlib=:
3445         enable dos_paths
3446         disable pic
3447         ;;
3448     win32|win64)
3449         if enabled shared; then
3450             # Link to the import library instead of the normal static library
3451             # for shared libs.
3452             LD_LIB='%.lib'
3453             # Cannot build shared and static libraries at the same time with
3454             # MSVC.
3455             disable static
3456         fi
3457         shlibdir_default="$bindir_default"
3458         SLIBPREF=""
3459         SLIBSUF=".dll"
3460         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3461         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3462         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3463         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3464         SLIB_INSTALL_LINKS=
3465         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3466         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3467         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3468         objformat="win32"
3469         ranlib=:
3470         enable dos_paths
3471         disable pic
3472         ;;
3473     cygwin*)
3474         target_os=cygwin
3475         shlibdir_default="$bindir_default"
3476         SLIBPREF="cyg"
3477         SLIBSUF=".dll"
3478         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3479         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3480         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3481         SLIB_INSTALL_LINKS=
3482         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3483         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3484         objformat="win32"
3485         enable dos_paths
3486         disable pic
3487         ;;
3488     *-dos|freedos|opendos)
3489         network_extralibs="-lsocket"
3490         objformat="coff"
3491         enable dos_paths
3492         add_cppflags -U__STRICT_ANSI__
3493         ;;
3494     linux)
3495         enable dv1394
3496         ;;
3497     irix*)
3498         target_os=irix
3499         ranlib="echo ignoring ranlib"
3500         ;;
3501     os/2*)
3502         strip="lxlite -CS"
3503         ln_s="cp -f"
3504         objformat="aout"
3505         add_cppflags -D_GNU_SOURCE
3506         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3507         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3508         FFSERVERLDFLAGS=""
3509         LIBSUF="_s.a"
3510         SLIBPREF=""
3511         SLIBSUF=".dll"
3512         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3513         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3514         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3515             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3516             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3517             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3518             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3519             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3520         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3521             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3522         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3523         enable dos_paths
3524         enable_weak os2threads
3525         ;;
3526     gnu/kfreebsd)
3527         add_cppflags -D_BSD_SOURCE
3528         ;;
3529     gnu)
3530         ;;
3531     qnx)
3532         add_cppflags -D_QNX_SOURCE
3533         network_extralibs="-lsocket"
3534         ;;
3535     symbian)
3536         SLIBSUF=".dll"
3537         enable dos_paths
3538         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3539         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3540         add_ldflags -Wl,--target1-abs,--no-undefined \
3541                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3542                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3543         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3544                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3545                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3546         ;;
3547     osf1)
3548         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3549         FFSERVERLDFLAGS=
3550         ;;
3551     minix)
3552         ;;
3553     plan9)
3554         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3555                      -D_REENTRANT_SOURCE        \
3556                      -D_RESEARCH_SOURCE         \
3557                      -DFD_SETSIZE=96            \
3558                      -DHAVE_SOCK_OPTS
3559         add_compat strtod.o strtod=avpriv_strtod
3560         network_extralibs='-lbsd'
3561         exeobjs=compat/plan9/main.o
3562         disable ffserver
3563         cp_f='cp'
3564         ;;
3565     none)
3566         ;;
3567     *)
3568         die "Unknown OS '$target_os'."
3569         ;;
3570 esac
3571
3572 # determine libc flavour
3573
3574 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3575 if check_cpp_condition features.h "defined __UCLIBC__"; then
3576     libc_type=uclibc
3577     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3578 elif check_cpp_condition features.h "defined __GLIBC__"; then
3579     libc_type=glibc
3580     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3581 # MinGW headers can be installed on Cygwin, so check for newlib first.
3582 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3583     libc_type=newlib
3584     add_cppflags -U__STRICT_ANSI__
3585 elif check_header _mingw.h; then
3586     libc_type=mingw
3587     check_cpp_condition _mingw.h \
3588         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3589             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3590         die "ERROR: MinGW runtime version must be >= 3.15."
3591     add_cppflags -U__STRICT_ANSI__
3592     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3593             __MINGW64_VERSION_MAJOR < 3"; then
3594         add_compat msvcrt/snprintf.o
3595         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3596     fi
3597 elif check_func_headers stdlib.h _get_doserrno; then
3598     libc_type=msvcrt
3599     add_compat strtod.o strtod=avpriv_strtod
3600     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3601                                  _snprintf=avpriv_snprintf  \
3602                                  vsnprintf=avpriv_vsnprintf
3603     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3604     # 0x601 by default unless something else is set by the user.
3605     # This can easily lead to us detecting functions only present
3606     # in such new versions and producing binaries requiring windows 7.0.
3607     # Therefore explicitly set the default to XP unless the user has
3608     # set something else on the command line.
3609     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3610 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3611     libc_type=klibc
3612 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3613     libc_type=bionic
3614     add_compat strtod.o strtod=avpriv_strtod
3615 fi
3616
3617 test -n "$libc_type" && enable $libc_type
3618
3619 # hacks for compiler/libc/os combinations
3620
3621 if enabled_all tms470 glibc; then
3622     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3623     add_cppflags -D__USER_LABEL_PREFIX__=
3624     add_cppflags -D__builtin_memset=memset
3625     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3626     add_cflags   -pds=48    # incompatible redefinition of macro
3627 fi
3628
3629 if enabled_all ccc glibc; then
3630     add_ldflags -Wl,-z,now  # calls to libots crash without this
3631 fi
3632
3633 esc(){
3634     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3635 }
3636
3637 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3638
3639 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3640
3641 set_default $PATHS_LIST
3642 set_default nm
3643
3644 # we need to build at least one lib type
3645 if ! enabled_any static shared; then
3646     cat <<EOF
3647 At least one library type must be built.
3648 Specify --enable-static to build the static libraries or --enable-shared to
3649 build the shared libraries as well. To only build the shared libraries specify
3650 --disable-static in addition to --enable-shared.
3651 EOF
3652     exit 1;
3653 fi
3654
3655 die_license_disabled() {
3656     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3657 }
3658
3659 die_license_disabled_gpl() {
3660     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3661 }
3662
3663 die_license_disabled gpl libcdio
3664 die_license_disabled gpl libutvideo
3665 die_license_disabled gpl libvidstab
3666 die_license_disabled gpl libx264
3667 die_license_disabled gpl libxavs
3668 die_license_disabled gpl libxvid
3669 die_license_disabled gpl x11grab
3670
3671 die_license_disabled nonfree libaacplus
3672 die_license_disabled nonfree libfaac
3673 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3674 enabled gpl && die_license_disabled_gpl nonfree openssl
3675
3676 die_license_disabled version3 libopencore_amrnb
3677 die_license_disabled version3 libopencore_amrwb
3678 die_license_disabled version3 libvo_aacenc
3679 die_license_disabled version3 libvo_amrwbenc
3680
3681 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3682
3683 disabled optimizations || check_cflags -fomit-frame-pointer
3684
3685 enable_weak_pic() {
3686     disabled pic && return
3687     enable pic
3688     add_cppflags -DPIC
3689     add_cflags   -fPIC
3690     add_asflags  -fPIC
3691 }
3692
3693 enabled pic && enable_weak_pic
3694
3695 check_cc <<EOF || die "Symbol mangling check failed."
3696 int ff_extern;
3697 EOF
3698 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3699 extern_prefix=${sym%%ff_extern*}
3700
3701 check_cc <<EOF && enable_weak inline_asm
3702 void foo(void) { __asm__ volatile ("" ::); }
3703 EOF
3704
3705 _restrict=
3706 for restrict_keyword in restrict __restrict__ __restrict; do
3707     check_cc <<EOF && _restrict=$restrict_keyword && break
3708 void foo(char * $restrict_keyword p);
3709 EOF
3710 done
3711
3712 check_cc <<EOF && enable attribute_packed
3713 struct { int x; } __attribute__((packed)) x;
3714 EOF
3715
3716 check_cc <<EOF && enable attribute_may_alias
3717 union { int x; } __attribute__((may_alias)) x;
3718 EOF
3719
3720 check_cc <<EOF || die "endian test failed"
3721 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3722 EOF
3723 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3724
3725 if enabled alpha; then
3726
3727     check_cflags -mieee
3728
3729 elif enabled arm; then
3730
3731     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3732 float func(float a, float b){ return a+b; }
3733 EOF
3734
3735     enabled thumb && check_cflags -mthumb || check_cflags -marm
3736     nogas=die
3737
3738     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3739         enable vfp_args
3740     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3741         case "${cross_prefix:-$cc}" in
3742             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3743             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3744 __asm__ (".eabi_attribute 28, 1");
3745 int main(void) { return 0; }
3746 EOF
3747         esac
3748         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3749     fi
3750
3751     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3752     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3753     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3754     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3755     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3756     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3757
3758     [ $target_os = linux ] ||
3759         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3760             $ARCH_EXT_LIST_ARM
3761
3762     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3763     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3764
3765     enabled_all armv6t2 shared !pic && enable_weak_pic
3766
3767 elif enabled mips; then
3768
3769     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3770     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3771      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3772     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3773      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3774     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3775      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3776     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3777      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3778
3779 elif enabled parisc; then
3780
3781     if enabled gcc; then
3782         case $($cc -dumpversion) in
3783             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3784         esac
3785     fi
3786
3787 elif enabled ppc; then
3788
3789     enable local_aligned_8 local_aligned_16
3790
3791     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3792     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3793     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3794     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3795
3796     # AltiVec flags: The FSF version of GCC differs from the Apple version
3797     if enabled altivec; then
3798         nogas=warn
3799         check_cflags -maltivec -mabi=altivec &&
3800         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3801         check_cflags -faltivec
3802
3803         # check if our compiler supports Motorola AltiVec C API
3804         check_cc <<EOF || disable altivec
3805 $inc_altivec_h
3806 int main(void) {
3807     vector signed int v1 = (vector signed int) { 0 };
3808     vector signed int v2 = (vector signed int) { 1 };
3809     v1 = vec_add(v1, v2);
3810     return 0;
3811 }
3812 EOF
3813
3814         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3815     fi
3816
3817 elif enabled sparc; then
3818
3819     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3820
3821 elif enabled x86; then
3822
3823     check_builtin rdtsc    intrin.h   "__rdtsc()"
3824     check_builtin mm_empty mmintrin.h "_mm_empty()"
3825
3826     enable local_aligned_8 local_aligned_16
3827
3828     # check whether EBP is available on x86
3829     # As 'i' is stored on the stack, this program will crash
3830     # if the base pointer is used to access it because the
3831     # base pointer is cleared in the inline assembly code.
3832     check_exec_crash <<EOF && enable ebp_available
3833 volatile int i=0;
3834 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3835 return i;
3836 EOF
3837
3838     # check whether EBX is available on x86
3839     check_inline_asm ebx_available '""::"b"(0)' &&
3840         check_inline_asm ebx_available '"":::"%ebx"'
3841
3842     # check whether xmm clobbers are supported
3843     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3844
3845     # check whether binutils is new enough to compile SSSE3/MMXEXT
3846     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3847     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3848
3849     if ! disabled_any asm mmx yasm; then
3850         if check_cmd $yasmexe --version; then
3851             enabled x86_64 && yasm_extra="-m amd64"
3852             yasm_debug="-g dwarf2"
3853         elif check_cmd nasm -v; then
3854             yasmexe=nasm
3855             yasm_debug="-g -F dwarf"
3856             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3857         fi
3858
3859         YASMFLAGS="-f $objformat $yasm_extra"
3860         enabled pic               && append YASMFLAGS "-DPIC"
3861         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3862         case "$objformat" in
3863             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3864         esac
3865
3866         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3867             die "yasm not found, use --disable-yasm for a crippled build"
3868         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external
3869         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3870         check_yasm "CPU amdnop" && enabled i686 && enable cpunop
3871     fi
3872
3873     case "$cpu" in
3874         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3875             disable fast_clz
3876         ;;
3877     esac
3878
3879 fi
3880
3881 if enabled asm; then
3882     as=${gas:=$as}
3883     check_as <<EOF && enable gnu_as || \
3884         $nogas "GNU assembler not found, install gas-preprocessor"
3885 .macro m n
3886 \n: .int 0
3887 .endm
3888 m x
3889 EOF
3890 fi
3891
3892 check_ldflags -Wl,--as-needed
3893
3894 if check_func dlopen; then
3895     ldl=
3896 elif check_func dlopen -ldl; then
3897     ldl=-ldl
3898 fi
3899
3900 if ! disabled network; then
3901     check_type "sys/types.h sys/socket.h" socklen_t
3902     check_type netdb.h "struct addrinfo"
3903     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3904     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3905     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3906     check_type netinet/in.h "struct sockaddr_in6"
3907     check_type poll.h "struct pollfd"
3908     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3909     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3910     check_type netinet/sctp.h "struct sctp_event_subscribe"
3911     check_func getaddrinfo $network_extralibs
3912     check_func getservbyport $network_extralibs
3913     # Prefer arpa/inet.h over winsock2
3914     if check_header arpa/inet.h ; then
3915         check_func closesocket
3916     elif check_header winsock2.h ; then
3917         check_func_headers winsock2.h closesocket -lws2 &&
3918             network_extralibs="-lws2" ||
3919         { check_func_headers winsock2.h closesocket -lws2_32 &&
3920             network_extralibs="-lws2_32"; }
3921         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3922         check_type ws2tcpip.h socklen_t
3923         check_type ws2tcpip.h "struct addrinfo"
3924         check_type ws2tcpip.h "struct group_source_req"
3925         check_type ws2tcpip.h "struct ip_mreq_source"
3926         check_type ws2tcpip.h "struct ipv6_mreq"
3927         check_type winsock2.h "struct pollfd"
3928         check_type ws2tcpip.h "struct sockaddr_in6"
3929         check_type ws2tcpip.h "struct sockaddr_storage"
3930         check_struct winsock2.h "struct sockaddr" sa_len
3931     else
3932         disable network
3933     fi
3934 fi
3935
3936 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3937 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3938
3939 check_func  access
3940 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
3941 check_func  fcntl
3942 check_func  fork
3943 check_func_headers stdlib.h getenv
3944 check_func  gethrtime
3945 check_func  getopt
3946 check_func  getrusage
3947 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3948 check_func  gettimeofday
3949 check_func  inet_aton $network_extralibs
3950 check_func  isatty
3951 check_func  localtime_r
3952 check_func  ${malloc_prefix}memalign            && enable memalign
3953 check_func  mkstemp
3954 check_func  mmap
3955 check_func  mprotect
3956 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3957 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3958 check_func  setrlimit
3959 check_func  strerror_r
3960 check_func  sched_getaffinity
3961 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3962 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3963 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3964 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3965 check_func  sysconf
3966 check_func  sysctl
3967 check_func  usleep
3968 check_func_headers conio.h kbhit
3969 check_func_headers windows.h PeekNamedPipe
3970 check_func_headers io.h setmode
3971 check_func_headers lzo/lzo1x.h lzo1x_999_compress
3972 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3973 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3974 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3975 check_func_headers windows.h GetProcessAffinityMask
3976 check_func_headers windows.h GetProcessTimes
3977 check_func_headers windows.h GetSystemTimeAsFileTime
3978 check_func_headers windows.h MapViewOfFile
3979 check_func_headers windows.h SetConsoleTextAttribute
3980 check_func_headers windows.h Sleep
3981 check_func_headers windows.h VirtualAlloc
3982 check_func_headers glob.h glob
3983
3984 check_header cl/cl.h
3985 check_header direct.h
3986 check_header dlfcn.h
3987 check_header dxva.h
3988 check_header dxva2api.h -D_WIN32_WINNT=0x0600
3989 check_header io.h
3990 check_header libcrystalhd/libcrystalhd_if.h
3991 check_header malloc.h
3992 check_header poll.h
3993 check_header sys/mman.h
3994 check_header sys/param.h
3995 check_header sys/resource.h
3996 check_header sys/select.h
3997 check_header sys/time.h
3998 check_header termios.h
3999 check_header unistd.h
4000 check_header vdpau/vdpau.h
4001 check_header vdpau/vdpau_x11.h
4002 check_header VideoDecodeAcceleration/VDADecoder.h
4003 check_header windows.h
4004 check_header X11/extensions/XvMClib.h
4005 check_header asm/types.h
4006
4007 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4008 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4009
4010 if ! disabled w32threads && ! enabled pthreads; then
4011     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
4012 fi
4013
4014 # check for some common methods of building with pthread support
4015 # do this before the optional library checks as some of them require pthreads
4016 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4017     enable pthreads
4018     if check_func pthread_create; then
4019         :
4020     elif check_func pthread_create -pthread; then
4021         add_cflags -pthread
4022         add_extralibs -pthread
4023     elif check_func pthread_create -pthreads; then
4024         add_cflags -pthreads
4025         add_extralibs -pthreads
4026     elif check_func pthread_create -lpthreadGC2; then
4027         add_extralibs -lpthreadGC2
4028     elif ! check_lib pthread.h pthread_create -lpthread; then
4029         disable pthreads
4030     fi
4031 fi
4032
4033 for thread in $THREADS_LIST; do
4034     if enabled $thread; then
4035         test -n "$thread_type" &&
4036             die "ERROR: Only one thread type must be selected." ||
4037             thread_type="$thread"
4038     fi
4039 done
4040
4041 if enabled pthreads; then
4042   check_func pthread_cancel
4043 fi
4044
4045 enabled sync_val_compare_and_swap && enable atomics_gcc
4046 enabled machine_rw_barrier && enabled atomic_cas_ptr && enable atomics_suncc
4047 enabled MemoryBarrier && enable atomics_win32
4048
4049 check_lib math.h sin -lm && LIBM="-lm"
4050 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4051
4052 atan2f_args=2
4053 ldexpf_args=2
4054 powf_args=2
4055
4056 for func in $MATH_FUNCS; do
4057     eval check_mathfunc $func \${${func}_args:-1}
4058 done
4059
4060 # these are off by default, so fail if requested and not available
4061 enabled avisynth   && { { check_lib2 "windows.h" LoadLibrary; } ||
4062                         { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4063                         die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4064 enabled fontconfig && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4065 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4066 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4067 enabled libiec61883 && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4068 enabled libaacplus && require  "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4069 enabled libass     && require_pkg_config libass ass/ass.h ass_library_init
4070 enabled libbluray  && require libbluray libbluray/bluray.h bd_open -lbluray
4071 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0 &&
4072                       { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4073                         die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4074 enabled libcaca    && require_pkg_config caca caca.h caca_create_canvas
4075 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4076 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4077 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"
4078 enabled libflite   && require2 libflite "flite/flite.h" flite_init $flite_libs
4079 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
4080 enabled libgsm     && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4081                             check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4082                         done || die "ERROR: libgsm not found"; }
4083 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4084 enabled libmodplug && require  libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4085 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4086 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
4087 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4088 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4089 enabled libopencv  && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4090 enabled libopenjpeg && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4091                          check_lib openjpeg.h opj_version -lopenjpeg ||
4092                          die "ERROR: libopenjpeg not found"; }
4093 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4094 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4095 enabled libquvi    && require_pkg_config libquvi quvi/quvi.h quvi_init
4096 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4097 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4098 enabled libshine   && require_pkg_config shine shine/layer3.h shine_encode_frame
4099 enabled libsoxr    && require  libsoxr soxr.h soxr_create -lsoxr
4100 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
4101 enabled libstagefright_h264  && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4102     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4103     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4104 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4105 enabled libtwolame && require  libtwolame twolame.h twolame_init -ltwolame &&
4106                       { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4107                         die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4108 enabled libutvideo    && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4109 enabled libv4l2    && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4110 enabled libvidstab && require_pkg_config vidstab vid.stab/libvidstab.h vsMotionDetectInit
4111 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4112 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4113 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4114 enabled libvpx     && {
4115     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4116                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
4117     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 ||
4118                                 die "ERROR: libvpx encoder version must be >=0.9.7"; }
4119     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder;  }
4120     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4121 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
4122                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4123                         die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4124 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
4125 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
4126 enabled libzmq     && require_pkg_config libzmq zmq.h zmq_ctx_new
4127 enabled openal     && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4128                         check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4129                         die "ERROR: openal not found"; } &&
4130                       { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4131                         die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4132 enabled opencl     && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4133                         check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4134                         die "ERROR: opencl not found"; } &&
4135                       { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4136                         check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4137                         die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4138 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4139                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4140                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4141                         die "ERROR: openssl not found"; }
4142
4143 if enabled gnutls; then
4144     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4145     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4146 fi
4147
4148 # libdc1394 check
4149 if enabled libdc1394; then
4150     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4151         enable libdc1394_2; } ||
4152     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4153         enable libdc1394_1; } ||
4154     die "ERROR: No version of libdc1394 found "
4155 fi
4156
4157 SDL_CONFIG="${cross_prefix}sdl-config"
4158 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4159     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4160     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4161     enable sdl
4162 else
4163   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4164     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4165     sdl_libs=$("${SDL_CONFIG}" --libs)
4166     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4167     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4168     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4169     enable sdl
4170   fi
4171 fi
4172 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4173
4174 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4175 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4176 perl --version > /dev/null 2>&1 && enable perl || disable perl
4177 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
4178 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4179
4180 check_header linux/fb.h
4181 check_header linux/videodev.h
4182 check_header linux/videodev2.h
4183 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4184
4185 check_header sys/videoio.h
4186
4187 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4188 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4189 # w32api 3.12 had it defined wrong
4190 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4191
4192 check_type "dshow.h" IBaseFilter
4193
4194 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4195 { check_header dev/bktr/ioctl_meteor.h &&
4196   check_header dev/bktr/ioctl_bt848.h; } ||
4197 { check_header machine/ioctl_meteor.h &&
4198   check_header machine/ioctl_bt848.h; } ||
4199 { check_header dev/video/meteor/ioctl_meteor.h &&
4200   check_header dev/video/bktr/ioctl_bt848.h; } ||
4201 check_header dev/ic/bt8xx.h
4202
4203 check_header sndio.h
4204 if check_struct sys/soundcard.h audio_buf_info bytes; then
4205     enable_safe sys/soundcard.h
4206 else
4207     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4208     #include <sys/soundcard.h>
4209     audio_buf_info abc;
4210 EOF
4211 fi
4212 check_header soundcard.h
4213
4214 enabled_any alsa_indev alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4215
4216 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4217     check_func jack_port_get_latency_range -ljack
4218
4219 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4220
4221 if enabled libcdio; then
4222     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio || check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4223 fi
4224
4225 enabled x11grab                                           &&
4226 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
4227 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4228 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4229
4230 enabled vaapi &&
4231     check_lib va/va.h vaInitialize -lva ||
4232     disable vaapi
4233
4234 enabled vdpau &&
4235     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4236     disable vdpau
4237
4238 # Funny iconv installations are not unusual, so check it after all flags have been set
4239 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4240
4241 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4242
4243 # add some useful compiler flags if supported
4244 check_cflags -Wdeclaration-after-statement
4245 check_cflags -Wall
4246 check_cflags -Wno-parentheses
4247 check_cflags -Wno-switch
4248 check_cflags -Wno-format-zero-length
4249 check_cflags -Wdisabled-optimization
4250 check_cflags -Wpointer-arith
4251 check_cflags -Wredundant-decls
4252 check_cflags -Wno-pointer-sign
4253 check_cflags -Wwrite-strings
4254 check_cflags -Wtype-limits
4255 check_cflags -Wundef
4256 check_cflags -Wmissing-prototypes
4257 check_cflags -Wno-pointer-to-int-cast
4258 check_cflags -Wstrict-prototypes
4259 enabled extra_warnings && check_cflags -Winline
4260
4261 # add some linker flags
4262 check_ldflags -Wl,--warn-common
4263 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4264 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4265
4266 enabled xmm_clobber_test &&
4267     check_ldflags -Wl,--wrap,avcodec_open2              \
4268                   -Wl,--wrap,avcodec_decode_audio4      \
4269                   -Wl,--wrap,avcodec_decode_video2      \
4270                   -Wl,--wrap,avcodec_decode_subtitle2   \
4271                   -Wl,--wrap,avcodec_encode_audio2      \
4272                   -Wl,--wrap,avcodec_encode_video       \
4273                   -Wl,--wrap,avcodec_encode_subtitle    \
4274                   -Wl,--wrap,sws_scale ||
4275     disable xmm_clobber_test
4276
4277 echo "X{};" > $TMPV
4278 if test_ldflags -Wl,--version-script,$TMPV; then
4279     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4280     check_cc <<EOF && enable symver_asm_label
4281 void ff_foo(void) __asm__ ("av_foo@VERSION");
4282 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4283 EOF
4284     check_cc <<EOF && enable symver_gnu_asm
4285 __asm__(".symver ff_foo,av_foo@VERSION");
4286 void ff_foo(void) {}
4287 EOF
4288 fi
4289
4290 if [ -z "$optflags" ]; then
4291     if enabled small; then
4292         optflags=$cflags_size
4293     elif enabled optimizations; then
4294         optflags=$cflags_speed
4295     else
4296         optflags=$cflags_noopt
4297     fi
4298 fi
4299
4300 check_optflags(){
4301     check_cflags "$@"
4302     enabled lto && check_ldflags "$@"
4303 }
4304
4305
4306 if enabled lto; then
4307     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4308     check_cflags  -flto
4309     check_ldflags -flto $cpuflags
4310 fi
4311
4312 check_optflags $optflags
4313 check_optflags -fno-math-errno
4314 check_optflags -fno-signed-zeros
4315
4316 enabled ftrapv && check_cflags -ftrapv
4317
4318 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4319 int x;
4320 EOF
4321
4322
4323 if enabled icc; then
4324     # Just warnings, no remarks
4325     check_cflags -w1
4326     # -wd: Disable following warnings
4327     # 144, 167, 556: -Wno-pointer-sign
4328     # 188: enumerated type mixed with another type
4329     # 1292: attribute "foo" ignored
4330     # 1419: external declaration in primary source file
4331     # 10006: ignoring unknown option -fno-signed-zeros
4332     # 10148: ignoring unknown option -Wno-parentheses
4333     # 10156: ignoring option '-W'; no argument required
4334     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4335     # 11030: Warning unknown option --as-needed
4336     # 10156: ignoring option '-export'; no argument required
4337     check_ldflags -wd10156,11030
4338     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4339     enable ebp_available
4340     if enabled x86_32; then
4341         icc_version=$($cc -dumpversion)
4342         test ${icc_version%%.*} -ge 11 &&
4343             check_cflags -falign-stack=maintain-16-byte ||
4344             disable aligned_stack
4345     fi
4346 elif enabled ccc; then
4347     # disable some annoying warnings
4348     add_cflags -msg_disable bitnotint
4349     add_cflags -msg_disable mixfuncvoid
4350     add_cflags -msg_disable nonstandcast
4351     add_cflags -msg_disable unsupieee
4352 elif enabled gcc; then
4353     check_optflags -fno-tree-vectorize
4354     check_cflags -Werror=implicit-function-declaration
4355     check_cflags -Werror=missing-prototypes
4356     check_cflags -Werror=return-type
4357     check_cflags -Werror=vla
4358 elif enabled llvm_gcc; then
4359     check_cflags -mllvm -stack-alignment=16
4360 elif enabled clang; then
4361     check_cflags -mllvm -stack-alignment=16
4362     check_cflags -Qunused-arguments
4363     check_cflags -Werror=implicit-function-declaration
4364     check_cflags -Werror=missing-prototypes
4365     check_cflags -Werror=return-type
4366 elif enabled armcc; then
4367     # 2523: use of inline assembler is deprecated
4368     add_cflags -W${armcc_opt},--diag_suppress=2523
4369     add_cflags -W${armcc_opt},--diag_suppress=1207
4370     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4371     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4372     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4373     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4374 elif enabled tms470; then
4375     add_cflags -pds=824 -pds=837
4376 elif enabled pathscale; then
4377     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4378 elif enabled msvc; then
4379     enabled x86_32 && disable aligned_stack
4380 elif enabled icl; then
4381     enabled x86_32 && disable aligned_stack
4382     check_cflags -W1 # Just warnings, no remark spam
4383     # basically -fstrict-aliasing for icl that doesn't work (correctly) on 13.x+
4384     check_cpp_condition "windows.h" "__ICL < 1300" && add_cflags -Qansi-alias
4385     # icl will pass the inline asm tests but inline asm is currently not supported (build will fail)
4386     disable inline_asm
4387 fi
4388
4389 case $target_os in
4390     osf1)
4391         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4392     ;;
4393     plan9)
4394         add_cppflags -Dmain=plan9_main
4395     ;;
4396 esac
4397
4398 enable frame_thread_encoder
4399 enabled_any $THREADS_LIST      && enable threads
4400 enabled_any $ATOMICS_LIST      && enable atomics_native
4401
4402 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4403
4404 check_deps $CONFIG_LIST       \
4405            $CONFIG_EXTRA      \
4406            $HAVE_LIST         \
4407            $ALL_COMPONENTS    \
4408
4409
4410 if test $target_os = "haiku"; then
4411     disable memalign
4412     disable posix_memalign
4413 fi
4414
4415 ! enabled_any memalign posix_memalign aligned_malloc &&
4416     enabled_any $need_memalign && enable memalign_hack
4417
4418 # add_dep lib dep
4419 # -> enable ${lib}_deps_${dep}
4420 # -> add $dep to ${lib}_deps only once
4421 add_dep() {
4422     lib=$1
4423     dep=$2
4424     enabled "${lib}_deps_${dep}" && return 0
4425     enable  "${lib}_deps_${dep}"
4426     prepend "${lib}_deps" $dep
4427 }
4428
4429 # merge deps lib components
4430 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4431 merge_deps() {
4432     lib=$1
4433     shift
4434     for comp in $*; do
4435         enabled $comp || continue
4436         eval "dep=\"\$${comp}_deps\""
4437         for d in $dep; do
4438             add_dep $lib $d
4439         done
4440     done
4441 }
4442
4443 merge_deps libavfilter $FILTER_LIST
4444
4445 echo "install prefix            $prefix"
4446 echo "source path               $source_path"
4447 echo "C compiler                $cc"
4448 echo "ARCH                      $arch ($cpu)"
4449 if test "$build_suffix" != ""; then
4450     echo "build suffix              $build_suffix"
4451 fi
4452 if test "$progs_suffix" != ""; then
4453     echo "progs suffix              $progs_suffix"
4454 fi
4455 if test "$extra_version" != ""; then
4456     echo "version string suffix     $extra_version"
4457 fi
4458 echo "big-endian                ${bigendian-no}"
4459 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4460 if enabled x86; then
4461     echo "${yasmexe}                      ${yasm-no}"
4462     echo "MMX enabled               ${mmx-no}"
4463     echo "MMXEXT enabled            ${mmxext-no}"
4464     echo "3DNow! enabled            ${amd3dnow-no}"
4465     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4466     echo "SSE enabled               ${sse-no}"
4467     echo "SSSE3 enabled             ${ssse3-no}"
4468     echo "AVX enabled               ${avx-no}"
4469     echo "FMA4 enabled              ${fma4-no}"
4470     echo "i686 features enabled     ${i686-no}"
4471     echo "CMOV is fast              ${fast_cmov-no}"
4472     echo "EBX available             ${ebx_available-no}"
4473     echo "EBP available             ${ebp_available-no}"
4474 fi
4475 if enabled arm; then
4476     echo "ARMv5TE enabled           ${armv5te-no}"
4477     echo "ARMv6 enabled             ${armv6-no}"
4478     echo "ARMv6T2 enabled           ${armv6t2-no}"
4479     echo "VFP enabled               ${vfp-no}"
4480     echo "NEON enabled              ${neon-no}"
4481     echo "THUMB enabled             ${thumb-no}"
4482 fi
4483 if enabled mips; then
4484     echo "MIPS FPU enabled          ${mipsfpu-no}"
4485     echo "MIPS32R2 enabled          ${mips32r2-no}"
4486     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4487     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4488 fi
4489 if enabled ppc; then
4490     echo "AltiVec enabled           ${altivec-no}"
4491     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4492     echo "dcbzl available           ${dcbzl-no}"
4493 fi
4494 if enabled sparc; then
4495     echo "VIS enabled               ${vis-no}"
4496 fi
4497 echo "debug symbols             ${debug-no}"
4498 echo "strip symbols             ${stripping-no}"
4499 echo "optimize for size         ${small-no}"
4500 echo "optimizations             ${optimizations-no}"
4501 echo "static                    ${static-no}"
4502 echo "shared                    ${shared-no}"
4503 echo "postprocessing support    ${postproc-no}"
4504 echo "new filter support        ${avfilter-no}"
4505 echo "network support           ${network-no}"
4506 echo "threading support         ${thread_type-no}"
4507 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4508 echo "SDL support               ${sdl-no}"
4509 echo "opencl enabled            ${opencl-no}"
4510 echo "libshine enabled          ${libshine-no}"
4511 echo "texi2html enabled         ${texi2html-no}"
4512 echo "perl enabled              ${perl-no}"
4513 echo "pod2man enabled           ${pod2man-no}"
4514 echo "makeinfo enabled          ${makeinfo-no}"
4515 test -n "$random_seed" &&
4516     echo "random seed               ${random_seed}"
4517 echo
4518
4519 echo "External libraries:"
4520 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4521 echo
4522
4523 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4524     echo "Enabled ${type}s:"
4525     eval list=\$$(toupper $type)_LIST
4526     print_enabled '_*' $list | print_3_columns
4527     echo
4528 done
4529
4530 license="LGPL version 2.1 or later"
4531 if enabled nonfree; then
4532     license="nonfree and unredistributable"
4533 elif enabled gplv3; then
4534     license="GPL version 3 or later"
4535 elif enabled lgplv3; then
4536     license="LGPL version 3 or later"
4537 elif enabled gpl; then
4538     license="GPL version 2 or later"
4539 fi
4540
4541 echo "License: $license"
4542
4543 echo "Creating config.mak, config.h, and doc/config.texi..."
4544
4545 test -e Makefile || $ln_s "$source_path/Makefile" .
4546
4547 enabled stripping || strip="echo skipping strip"
4548
4549 config_files="$TMPH config.mak doc/config.texi"
4550
4551 cat > config.mak <<EOF
4552 # Automatically generated by configure - do not modify!
4553 ifndef FFMPEG_CONFIG_MAK
4554 FFMPEG_CONFIG_MAK=1
4555 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4556 prefix=$prefix
4557 LIBDIR=\$(DESTDIR)$libdir
4558 SHLIBDIR=\$(DESTDIR)$shlibdir
4559 INCDIR=\$(DESTDIR)$incdir
4560 BINDIR=\$(DESTDIR)$bindir
4561 DATADIR=\$(DESTDIR)$datadir
4562 MANDIR=\$(DESTDIR)$mandir
4563 SRC_PATH=$source_path
4564 ifndef MAIN_MAKEFILE
4565 SRC_PATH:=\$(SRC_PATH:.%=..%)
4566 endif
4567 CC_IDENT=$cc_ident
4568 ARCH=$arch
4569 CC=$cc
4570 CXX=$cxx
4571 AS=$as
4572 LD=$ld
4573 DEPCC=$dep_cc
4574 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4575 DEPAS=$as
4576 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4577 YASM=$yasmexe
4578 DEPYASM=$yasmexe
4579 AR=$ar
4580 ARFLAGS=$arflags
4581 AR_O=$ar_o
4582 RANLIB=$ranlib
4583 CP=cp -p
4584 LN_S=$ln_s
4585 STRIP=$strip
4586 CPPFLAGS=$CPPFLAGS
4587 CFLAGS=$CFLAGS
4588 CXXFLAGS=$CXXFLAGS
4589 ASFLAGS=$ASFLAGS
4590 AS_C=$AS_C
4591 AS_O=$AS_O
4592 CC_C=$CC_C
4593 CC_E=$CC_E
4594 CC_O=$CC_O
4595 CXX_C=$CXX_C
4596 CXX_O=$CXX_O
4597 LD_O=$LD_O
4598 LD_LIB=$LD_LIB
4599 LD_PATH=$LD_PATH
4600 DLLTOOL=$dlltool
4601 LDFLAGS=$LDFLAGS
4602 LDFLAGS-ffserver=$FFSERVERLDFLAGS
4603 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4604 YASMFLAGS=$YASMFLAGS
4605 BUILDSUF=$build_suffix
4606 PROGSSUF=$progs_suffix
4607 FULLNAME=$FULLNAME
4608 LIBPREF=$LIBPREF
4609 LIBSUF=$LIBSUF
4610 LIBNAME=$LIBNAME
4611 SLIBPREF=$SLIBPREF
4612 SLIBSUF=$SLIBSUF
4613 EXESUF=$EXESUF
4614 EXTRA_VERSION=$extra_version
4615 CCDEP=$CCDEP
4616 CXXDEP=$CXXDEP
4617 CCDEP_FLAGS=$CCDEP_FLAGS
4618 ASDEP=$ASDEP
4619 ASDEP_FLAGS=$ASDEP_FLAGS
4620 CC_DEPFLAGS=$CC_DEPFLAGS
4621 AS_DEPFLAGS=$AS_DEPFLAGS
4622 HOSTCC=$host_cc
4623 HOSTLD=$host_ld
4624 HOSTCFLAGS=$host_cflags
4625 HOSTCPPFLAGS=$host_cppflags
4626 HOSTEXESUF=$HOSTEXESUF
4627 HOSTLDFLAGS=$host_ldflags
4628 HOSTLIBS=$host_libs
4629 DEPHOSTCC=$host_cc
4630 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4631 HOSTCCDEP=$HOSTCCDEP
4632 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4633 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4634 HOSTCC_C=$HOSTCC_C
4635 HOSTCC_O=$HOSTCC_O
4636 HOSTLD_O=$HOSTLD_O
4637 TARGET_EXEC=$target_exec $target_exec_args
4638 TARGET_PATH=$target_path
4639 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4640 LIBS-ffplay=$sdl_libs
4641 CFLAGS-ffplay=$sdl_cflags
4642 ZLIB=$($ldflags_filter -lz)
4643 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4644 EXTRALIBS=$extralibs
4645 COMPAT_OBJS=$compat_objs
4646 EXEOBJS=$exeobjs
4647 INSTALL=$install
4648 LIBTARGET=${LIBTARGET}
4649 SLIBNAME=${SLIBNAME}
4650 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4651 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4652 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4653 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4654 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4655 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4656 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4657 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4658 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4659 NOREDZONE_FLAGS=$noredzone_flags
4660 EOF
4661
4662 get_version(){
4663     lcname=lib${1}
4664     name=$(toupper $lcname)
4665     file=$source_path/$lcname/version.h
4666     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4667     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4668     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4669     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4670     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4671 }
4672
4673 map 'get_version $v' $LIBRARY_LIST
4674
4675 cat > $TMPH <<EOF
4676 /* Automatically generated by configure - do not modify! */
4677 #ifndef FFMPEG_CONFIG_H
4678 #define FFMPEG_CONFIG_H
4679 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4680 #define FFMPEG_LICENSE "$(c_escape $license)"
4681 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4682 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4683 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4684 #define av_restrict $_restrict
4685 #define EXTERN_PREFIX "${extern_prefix}"
4686 #define EXTERN_ASM ${extern_prefix}
4687 #define SLIBSUF "$SLIBSUF"
4688 #define HAVE_MMX2 HAVE_MMXEXT
4689 EOF
4690
4691 test -n "$assert_level" &&
4692     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4693
4694 test -n "$malloc_prefix" &&
4695     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4696
4697 if enabled yasm; then
4698     append config_files $TMPASM
4699     printf '' >$TMPASM
4700 fi
4701
4702 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4703
4704
4705 mkdir -p doc
4706 echo "@c auto-generated by configure" > doc/config.texi
4707
4708 print_config ARCH_   "$config_files" $ARCH_LIST
4709 print_config HAVE_   "$config_files" $HAVE_LIST
4710 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4711                                      $CONFIG_EXTRA      \
4712                                      $ALL_COMPONENTS    \
4713
4714 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4715 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4716
4717 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4718 cp_if_changed $TMPH config.h
4719 touch .config
4720
4721 enabled yasm && cp_if_changed $TMPASM config.asm
4722
4723 cat > $TMPH <<EOF
4724 /* Generated by ffconf */
4725 #ifndef AVUTIL_AVCONFIG_H
4726 #define AVUTIL_AVCONFIG_H
4727 EOF
4728
4729 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4730
4731 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4732
4733 cp_if_changed $TMPH libavutil/avconfig.h
4734
4735 if test -n "$WARNINGS"; then
4736     printf "\n$WARNINGS"
4737     enabled fatal_warnings && exit 1
4738 fi
4739
4740 # build pkg-config files
4741
4742 pkgconfig_generate(){
4743     name=$1
4744     shortname=${name#lib}${build_suffix}
4745     comment=$2
4746     version=$3
4747     libs=$4
4748     requires=$5
4749     enabled ${name#lib} || return 0
4750     mkdir -p $name
4751     cat <<EOF > $name/$name${build_suffix}.pc
4752 prefix=$prefix
4753 exec_prefix=\${prefix}
4754 libdir=$libdir
4755 includedir=$incdir
4756
4757 Name: $name
4758 Description: $comment
4759 Version: $version
4760 Requires: $(enabled shared || echo $requires)
4761 Requires.private: $(enabled shared && echo $requires)
4762 Conflicts:
4763 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4764 Libs.private: $(enabled shared && echo $libs)
4765 Cflags: -I\${includedir}
4766 EOF
4767
4768 mkdir -p doc/examples/pc-uninstalled
4769 includedir=${source_path}
4770 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
4771     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
4772 prefix=
4773 exec_prefix=
4774 libdir=\${pcfiledir}/../../../$name
4775 includedir=${includedir}
4776
4777 Name: $name
4778 Description: $comment
4779 Version: $version
4780 Requires: $requires
4781 Conflicts:
4782 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4783 Cflags: -I\${includedir}
4784 EOF
4785 }
4786
4787 lavfi_libs="libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4788 enabled libavfilter_deps_avcodec    && prepend lavfi_libs "libavcodec${build_suffix} = $LIBAVCODEC_VERSION,"
4789 enabled libavfilter_deps_avformat   && prepend lavfi_libs "libavformat${build_suffix} = $LIBAVFORMAT_VERSION,"
4790 enabled libavfilter_deps_avresample && prepend lavfi_libs "libavresample${build_suffix} = $LIBAVRESAMPLE_VERSION,"
4791 enabled libavfilter_deps_swscale    && prepend lavfi_libs "libswscale${build_suffix} = $LIBSWSCALE_VERSION,"
4792 enabled libavfilter_deps_swresample && prepend lavfi_libs "libswresample${build_suffix} = $LIBSWRESAMPLE_VERSION,"
4793 enabled libavfilter_deps_postproc   && prepend lavfi_libs "libpostproc${build_suffix} = $LIBPOSTPROC_VERSION,"
4794 lavfi_libs=${lavfi_libs%, }
4795
4796 lavd_libs="libavformat${build_suffix} = $LIBAVFORMAT_VERSION"
4797 enabled lavfi_indev && prepend lavd_libs "libavfilter${build_suffix} = $LIBAVFILTER_VERSION,"
4798
4799 pkgconfig_generate libavutil "FFmpeg utility library" "$LIBAVUTIL_VERSION" "$LIBM"
4800 pkgconfig_generate libavcodec "FFmpeg codec library" "$LIBAVCODEC_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4801 pkgconfig_generate libavformat "FFmpeg container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec${build_suffix} = $LIBAVCODEC_VERSION"
4802 pkgconfig_generate libavdevice "FFmpeg device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "$lavd_libs"
4803 pkgconfig_generate libavfilter "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION" "$extralibs" "$lavfi_libs"
4804 pkgconfig_generate libpostproc "FFmpeg postprocessing library" "$LIBPOSTPROC_VERSION" "" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4805 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4806 pkgconfig_generate libswscale "FFmpeg image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4807 pkgconfig_generate libswresample "FFmpeg audio resampling library" "$LIBSWRESAMPLE_VERSION" "$LIBM" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
4808
4809 fix_ffmpeg_remote(){
4810     git_remote_from=$1
4811     git_remote_to=$2
4812     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
4813     if [ "$fixme_remote" != "" ]; then
4814         echolog "
4815 Outdated domain in git config, the official domain for ffmpeg git is since
4816 November 2011, source.ffmpeg.org, both the old and the new point to the same
4817 repository and server. To update it enter the following commands:
4818 "
4819         for remote in $fixme_remote; do
4820             echolog "git remote set-url $remote $git_remote_to"
4821         done
4822     fi
4823 }
4824
4825 if test -f "$source_path/.git/config"; then
4826     remote_from=git.videolan.org
4827     remote_to=source.ffmpeg.org
4828     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
4829     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
4830 fi