git.sesse.net Git - ffmpeg/blob - configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --enable-rpath           use rpath to allow installing libraries in paths
  91                            not part of the dynamic linker search path
  92
  93 Licensing options:
  94   --enable-gpl             allow use of GPL code, the resulting libs
  95                            and binaries will be under GPL [no]
  96   --enable-version3        upgrade (L)GPL to version 3 [no]
  97   --enable-nonfree         allow use of nonfree code, the resulting libs
  98                            and binaries will be unredistributable [no]
  99
 100 Configuration options:
 101   --disable-static         do not build static libraries [no]
 102   --enable-shared          build shared libraries [no]
 103   --enable-small           optimize for size instead of speed
 104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 105   --enable-gray            enable full grayscale support (slower color)
 106   --disable-swscale-alpha  disable alpha channel support in swscale
 107   --disable-all            disable building components, libraries and programs
 108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 109   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
 110
 111 Program options:
 112   --disable-programs       do not build command line programs
 113   --disable-ffmpeg         disable ffmpeg build
 114   --disable-ffplay         disable ffplay build
 115   --disable-ffprobe        disable ffprobe build
 116   --disable-ffserver       disable ffserver build
 117
 118 Documentation options:
 119   --disable-doc            do not build documentation
 120   --disable-htmlpages      do not build HTML documentation pages
 121   --disable-manpages       do not build man documentation pages
 122   --disable-podpages       do not build POD documentation pages
 123   --disable-txtpages       do not build text documentation pages
 124
 125 Component options:
 126   --disable-avdevice       disable libavdevice build
 127   --disable-avcodec        disable libavcodec build
 128   --disable-avformat       disable libavformat build
 129   --disable-avutil         disable libavutil build
 130   --disable-swresample     disable libswresample build
 131   --disable-swscale        disable libswscale build
 132   --disable-postproc       disable libpostproc build
 133   --disable-avfilter       disable libavfilter build
 134   --enable-avresample      enable libavresample build [no]
 135   --disable-pthreads       disable pthreads [auto]
 136   --disable-w32threads     disable Win32 threads [auto]
 137   --disable-os2threads     disable OS/2 threads [auto]
 138   --disable-network        disable network support [no]
 139   --disable-dct            disable DCT code
 140   --disable-dwt            disable DWT code
 141   --disable-error-resilience disable error resilience code
 142   --disable-lsp            disable LSP code
 143   --disable-lzo            disable LZO decoder code
 144   --disable-mdct           disable MDCT code
 145   --disable-rdft           disable RDFT code
 146   --disable-fft            disable FFT code
 147
 148 Hardware accelerators:
 149   --disable-dxva2          disable DXVA2 code [autodetect]
 150   --disable-vaapi          disable VAAPI code [autodetect]
 151   --enable-vda             enable VDA code
 152   --disable-vdpau          disable VDPAU code [autodetect]
 153
 154 Individual component options:
 155   --disable-everything     disable all components listed below
 156   --disable-encoder=NAME   disable encoder NAME
 157   --enable-encoder=NAME    enable encoder NAME
 158   --disable-encoders       disable all encoders
 159   --disable-decoder=NAME   disable decoder NAME
 160   --enable-decoder=NAME    enable decoder NAME
 161   --disable-decoders       disable all decoders
 162   --disable-hwaccel=NAME   disable hwaccel NAME
 163   --enable-hwaccel=NAME    enable hwaccel NAME
 164   --disable-hwaccels       disable all hwaccels
 165   --disable-muxer=NAME     disable muxer NAME
 166   --enable-muxer=NAME      enable muxer NAME
 167   --disable-muxers         disable all muxers
 168   --disable-demuxer=NAME   disable demuxer NAME
 169   --enable-demuxer=NAME    enable demuxer NAME
 170   --disable-demuxers       disable all demuxers
 171   --enable-parser=NAME     enable parser NAME
 172   --disable-parser=NAME    disable parser NAME
 173   --disable-parsers        disable all parsers
 174   --enable-bsf=NAME        enable bitstream filter NAME
 175   --disable-bsf=NAME       disable bitstream filter NAME
 176   --disable-bsfs           disable all bitstream filters
 177   --enable-protocol=NAME   enable protocol NAME
 178   --disable-protocol=NAME  disable protocol NAME
 179   --disable-protocols      disable all protocols
 180   --enable-indev=NAME      enable input device NAME
 181   --disable-indev=NAME     disable input device NAME
 182   --disable-indevs         disable input devices
 183   --enable-outdev=NAME     enable output device NAME
 184   --disable-outdev=NAME    disable output device NAME
 185   --disable-outdevs        disable output devices
 186   --disable-devices        disable all devices
 187   --enable-filter=NAME     enable filter NAME
 188   --disable-filter=NAME    disable filter NAME
 189   --disable-filters        disable all filters
 190
 191 External library support:
 192   --enable-avisynth        enable reading of AviSynth script files [no]
 193   --disable-bzlib          disable bzlib [autodetect]
 194   --enable-fontconfig      enable fontconfig
 195   --enable-frei0r          enable frei0r video filtering
 196   --enable-gnutls          enable gnutls [no]
 197   --disable-iconv          disable iconv [autodetect]
 198   --enable-ladspa          enable LADSPA audio filtering
 199   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 200   --enable-libass          enable libass subtitles rendering [no]
 201   --enable-libbluray       enable BluRay reading using libbluray [no]
 202   --enable-libcaca         enable textual display using libcaca
 203   --enable-libcelt         enable CELT decoding via libcelt [no]
 204   --enable-libcdio         enable audio CD grabbing with libcdio
 205   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 206                            and libraw1394 [no]
 207   --enable-libfaac         enable AAC encoding via libfaac [no]
 208   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 209   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 210   --enable-libfreetype     enable libfreetype [no]
 211   --enable-libgme          enable Game Music Emu via libgme [no]
 212   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 213   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 214   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 215   --enable-libmodplug      enable ModPlug via libmodplug [no]
 216   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 217   --enable-libnut          enable NUT (de)muxing via libnut,
 218                            native (de)muxer exists [no]
 219   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 220   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 221   --enable-libopencv       enable video filtering via libopencv [no]
 222   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 223   --enable-libopus         enable Opus decoding via libopus [no]
 224   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 225   --enable-libquvi         enable quvi input via libquvi [no]
 226   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 227   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 228   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 229   --enable-libsoxr         enable Include libsoxr resampling [no]
 230   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 231   --enable-libssh          enable SFTP protocol via libssh [no]
 232   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 233   --enable-libtheora       enable Theora encoding via libtheora [no]
 234   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 235   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 236   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 237   --enable-libvidstab      enable video stabilization using vid.stab [no]
 238   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 239   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 240   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 241                            native implementation exists [no]
 242   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 243   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 244   --enable-libx264         enable H.264 encoding via x264 [no]
 245   --enable-libxavs         enable AVS encoding via xavs [no]
 246   --enable-libxvid         enable Xvid encoding via xvidcore,
 247                            native MPEG-4/Xvid encoder exists [no]
 248   --enable-libzmq          enable message passing via libzmq [no]
 249   --enable-libzvbi         enable teletext support via libzvbi [no]
 250   --enable-openal          enable OpenAL 1.1 capture support [no]
 251   --enable-opencl          enable OpenCL code
 252   --enable-openssl         enable openssl [no]
 253   --enable-x11grab         enable X11 grabbing [no]
 254   --disable-zlib           disable zlib [autodetect]
 255
 256 Advanced options (experts only):
 257   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 258   --enable-cross-compile   assume a cross-compiler is used
 259   --sysroot=PATH           root of cross-build tree
 260   --sysinclude=PATH        location of cross-build system headers
 261   --target-os=OS           compiler targets OS [$target_os]
 262   --target-exec=CMD        command to run executables on target
 263   --target-path=DIR        path to view of build directory on target
 264   --target-samples=DIR     path to samples directory on target
 265   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 266   --toolchain=NAME         set tool defaults according to NAME
 267   --nm=NM                  use nm tool NM [$nm_default]
 268   --ar=AR                  use archive tool AR [$ar_default]
 269   --as=AS                  use assembler AS [$as_default]
 270   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 271   --cc=CC                  use C compiler CC [$cc_default]
 272   --cxx=CXX                use C compiler CXX [$cxx_default]
 273   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 274   --ld=LD                  use linker LD [$ld_default]
 275   --host-cc=HOSTCC         use host C compiler HOSTCC
 276   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 277   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 278   --host-ld=HOSTLD         use host linker HOSTLD
 279   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 280   --host-libs=HLIBS        use libs HLIBS when linking for host
 281   --host-os=OS             compiler host OS [$target_os]
 282   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 283   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 284   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 285   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 286   --extra-version=STRING   version string suffix []
 287   --optflags=OPTFLAGS      override optimization-related compiler flags
 288   --build-suffix=SUFFIX    library name suffix []
 289   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 290   --progs-suffix=SUFFIX    program name suffix []
 291   --arch=ARCH              select architecture [$arch]
 292   --cpu=CPU                select the minimum required CPU (affects
 293                            instruction selection, may crash on older CPUs)
 294   --enable-pic             build position-independent code
 295   --enable-sram            allow use of on-chip SRAM
 296   --enable-thumb           compile for Thumb instruction set
 297   --disable-symver         disable symbol versioning
 298   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 299   --disable-safe-bitstream-reader
 300                            disable buffer boundary checking in bitreaders
 301                            (faster, but may crash)
 302   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 303   --enable-lto             use link-time optimization
 304
 305 Optimization options (experts only):
 306   --disable-asm            disable all assembler optimizations
 307   --disable-altivec        disable AltiVec optimizations
 308   --disable-amd3dnow       disable 3DNow! optimizations
 309   --disable-amd3dnowext    disable 3DNow! extended optimizations
 310   --disable-mmx            disable MMX optimizations
 311   --disable-mmxext         disable MMXEXT optimizations
 312   --disable-sse            disable SSE optimizations
 313   --disable-sse2           disable SSE2 optimizations
 314   --disable-sse3           disable SSE3 optimizations
 315   --disable-ssse3          disable SSSE3 optimizations
 316   --disable-sse4           disable SSE4 optimizations
 317   --disable-sse42          disable SSE4.2 optimizations
 318   --disable-avx            disable AVX optimizations
 319   --disable-fma4           disable FMA4 optimizations
 320   --disable-avx2           disable AVX2 optimizations
 321   --disable-armv5te        disable armv5te optimizations
 322   --disable-armv6          disable armv6 optimizations
 323   --disable-armv6t2        disable armv6t2 optimizations
 324   --disable-vfp            disable VFP optimizations
 325   --disable-neon           disable NEON optimizations
 326   --disable-vis            disable VIS optimizations
 327   --disable-inline-asm     disable use of inline assembler
 328   --disable-yasm           disable use of yasm assembler
 329   --disable-mips32r2       disable MIPS32R2 optimizations
 330   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 331   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 332   --disable-mipsfpu        disable floating point MIPS optimizations
 333   --disable-fast-unaligned consider unaligned accesses slow
 334
 335 Developer options (useful when working on FFmpeg itself):
 336   --disable-debug          disable debugging symbols
 337   --enable-debug=LEVEL     set the debug level [$debuglevel]
 338   --disable-optimizations  disable compiler optimizations
 339   --enable-extra-warnings  enable more compiler warnings
 340   --disable-stripping      disable stripping of executables and shared libraries
 341   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 342                            2 causes a slowdown at runtime.
 343   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 344   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 345                            leaks and errors, using the specified valgrind binary.
 346                            Cannot be combined with --target-exec
 347   --enable-ftrapv          Trap arithmetic overflows
 348   --samples=PATH           location of test samples for FATE, if not set use
 349                            \$FATE_SAMPLES at make invocation time.
 350   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 351                            should be used only for debugging purposes)
 352   --enable-random          randomly enable/disable components
 353   --disable-random
 354   --enable-random=LIST     randomly enable/disable specific components or
 355   --disable-random=LIST    component groups. LIST is a comma-separated list
 356                            of NAME[:PROB] entries where NAME is a component
 357                            (group) and PROB the probability associated with
 358                            NAME (default 0.5).
 359   --random-seed=VALUE      seed value for --enable/disable-random
 360
 361 NOTE: Object files are built at the place where configure is launched.
 362 EOF
 363   exit 0
 364 }
 365
 366 quotes='""'
 367
 368 log(){
 369     echo "$@" >> $logfile
 370 }
 371
 372 log_file(){
 373     log BEGIN $1
 374     pr -n -t $1 >> $logfile
 375     log END $1
 376 }
 377
 378 echolog(){
 379     log "$@"
 380     echo "$@"
 381 }
 382
 383 warn(){
 384     log "WARNING: $*"
 385     WARNINGS="${WARNINGS}WARNING: $*\n"
 386 }
 387
 388 die(){
 389     echolog "$@"
 390     cat <<EOF
 391
 392 If you think configure made a mistake, make sure you are using the latest
 393 version from Git.  If the latest version fails, report the problem to the
 394 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 395 EOF
 396     if disabled logging; then
 397         cat <<EOF
 398 Rerun configure with logging enabled (do not use --disable-logging), and
 399 include the log this produces with your report.
 400 EOF
 401     else
 402         cat <<EOF
 403 Include the log file "$logfile" produced by configure as this will help
 404 solving the problem.
 405 EOF
 406     fi
 407     exit 1
 408 }
 409
 410 # Avoid locale weirdness, besides we really just want to translate ASCII.
 411 toupper(){
 412     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 413 }
 414
 415 tolower(){
 416     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 417 }
 418
 419 c_escape(){
 420     echo "$*" | sed 's/["\\]/\\\0/g'
 421 }
 422
 423 sh_quote(){
 424     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 425     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 426     echo "$v"
 427 }
 428
 429 cleanws(){
 430     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
 431 }
 432
 433 filter(){
 434     pat=$1
 435     shift
 436     for v; do
 437         eval "case $v in $pat) echo $v ;; esac"
 438     done
 439 }
 440
 441 filter_out(){
 442     pat=$1
 443     shift
 444     for v; do
 445         eval "case $v in $pat) ;; *) echo $v ;; esac"
 446     done
 447 }
 448
 449 map(){
 450     m=$1
 451     shift
 452     for v; do eval $m; done
 453 }
 454
 455 add_suffix(){
 456     suffix=$1
 457     shift
 458     for v; do echo ${v}${suffix}; done
 459 }
 460
 461 set_all(){
 462     value=$1
 463     shift
 464     for var in $*; do
 465         eval $var=$value
 466     done
 467 }
 468
 469 set_weak(){
 470     value=$1
 471     shift
 472     for var; do
 473         eval : \${$var:=$value}
 474     done
 475 }
 476
 477 sanitize_var_name(){
 478     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 479 }
 480
 481 set_safe(){
 482     var=$1
 483     shift
 484     eval $(sanitize_var_name "$var")='$*'
 485 }
 486
 487 get_safe(){
 488     eval echo \$$(sanitize_var_name "$1")
 489 }
 490
 491 pushvar(){
 492     for pvar in $*; do
 493         eval level=\${${pvar}_level:=0}
 494         eval ${pvar}_${level}="\$$pvar"
 495         eval ${pvar}_level=$(($level+1))
 496     done
 497 }
 498
 499 popvar(){
 500     for pvar in $*; do
 501         eval level=\${${pvar}_level:-0}
 502         test $level = 0 && continue
 503         eval level=$(($level-1))
 504         eval $pvar="\${${pvar}_${level}}"
 505         eval ${pvar}_level=$level
 506         eval unset ${pvar}_${level}
 507     done
 508 }
 509
 510 enable(){
 511     set_all yes $*
 512 }
 513
 514 disable(){
 515     set_all no $*
 516 }
 517
 518 enable_weak(){
 519     set_weak yes $*
 520 }
 521
 522 disable_weak(){
 523     set_weak no $*
 524 }
 525
 526 enable_safe(){
 527     for var; do
 528         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 529     done
 530 }
 531
 532 disable_safe(){
 533     for var; do
 534         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 535     done
 536 }
 537
 538 do_enable_deep(){
 539     for var; do
 540         enabled $var && continue
 541         eval sel="\$${var}_select"
 542         eval sgs="\$${var}_suggest"
 543         pushvar var sgs
 544         enable_deep $sel
 545         popvar sgs
 546         enable_deep_weak $sgs
 547         popvar var
 548     done
 549 }
 550
 551 enable_deep(){
 552     do_enable_deep $*
 553     enable $*
 554 }
 555
 556 enable_deep_weak(){
 557     for var; do
 558         disabled $var && continue
 559         pushvar var
 560         do_enable_deep $var
 561         popvar var
 562         enable_weak $var
 563     done
 564 }
 565
 566 enabled(){
 567     test "${1#!}" = "$1" && op== || op=!=
 568     eval test "x\$${1#!}" $op "xyes"
 569 }
 570
 571 disabled(){
 572     test "${1#!}" = "$1" && op== || op=!=
 573     eval test "x\$${1#!}" $op "xno"
 574 }
 575
 576 enabled_all(){
 577     for opt; do
 578         enabled $opt || return 1
 579     done
 580 }
 581
 582 disabled_all(){
 583     for opt; do
 584         disabled $opt || return 1
 585     done
 586 }
 587
 588 enabled_any(){
 589     for opt; do
 590         enabled $opt && return 0
 591     done
 592 }
 593
 594 disabled_any(){
 595     for opt; do
 596         disabled $opt && return 0
 597     done
 598     return 1
 599 }
 600
 601 set_default(){
 602     for opt; do
 603         eval : \${$opt:=\$${opt}_default}
 604     done
 605 }
 606
 607 is_in(){
 608     value=$1
 609     shift
 610     for var in $*; do
 611         [ $var = $value ] && return 0
 612     done
 613     return 1
 614 }
 615
 616 do_check_deps(){
 617     for cfg; do
 618         cfg="${cfg#!}"
 619         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 620         disabled ${cfg}_checking && continue
 621         enable ${cfg}_checking
 622         append allopts $cfg
 623
 624         eval dep_all="\$${cfg}_deps"
 625         eval dep_any="\$${cfg}_deps_any"
 626         eval dep_sel="\$${cfg}_select"
 627         eval dep_sgs="\$${cfg}_suggest"
 628         eval dep_ifa="\$${cfg}_if"
 629         eval dep_ifn="\$${cfg}_if_any"
 630
 631         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 632         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 633         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 634
 635         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 636         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 637         enabled_all  $dep_all || disable $cfg
 638         enabled_any  $dep_any || disable $cfg
 639         disabled_any $dep_sel && disable $cfg
 640
 641         if enabled $cfg; then
 642             enable_deep $dep_sel
 643             enable_deep_weak $dep_sgs
 644         fi
 645
 646         disable ${cfg}_checking
 647     done
 648 }
 649
 650 check_deps(){
 651     unset allopts
 652
 653     do_check_deps "$@"
 654
 655     for cfg in $allopts; do
 656         enabled $cfg || continue
 657         eval dep_extralibs="\$${cfg}_extralibs"
 658         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 659     done
 660 }
 661
 662 print_config(){
 663     pfx=$1
 664     files=$2
 665     shift 2
 666     map 'eval echo "$v \${$v:-no}"' "$@" |
 667     awk "BEGIN { split(\"$files\", files) }
 668         {
 669             c = \"$pfx\" toupper(\$1);
 670             v = \$2;
 671             sub(/yes/, 1, v);
 672             sub(/no/,  0, v);
 673             for (f in files) {
 674                 file = files[f];
 675                 if (file ~ /\\.h\$/) {
 676                     printf(\"#define %s %d\\n\", c, v) >>file;
 677                 } else if (file ~ /\\.asm\$/) {
 678                     printf(\"%%define %s %d\\n\", c, v) >>file;
 679                 } else if (file ~ /\\.mak\$/) {
 680                     n = -v ? \"\" : \"!\";
 681                     printf(\"%s%s=yes\\n\", n, c) >>file;
 682                 } else if (file ~ /\\.texi\$/) {
 683                     pre = -v ? \"\" : \"@c \";
 684                     yesno = \$2;
 685                     c2 = tolower(c);
 686                     gsub(/_/, \"-\", c2);
 687                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 688                 }
 689             }
 690         }"
 691 }
 692
 693 print_enabled(){
 694     suf=$1
 695     shift
 696     for v; do
 697         enabled $v && printf "%s\n" ${v%$suf};
 698     done
 699 }
 700
 701 append(){
 702     var=$1
 703     shift
 704     eval "$var=\"\$$var $*\""
 705 }
 706
 707 prepend(){
 708     var=$1
 709     shift
 710     eval "$var=\"$* \$$var\""
 711 }
 712
 713 add_cppflags(){
 714     append CPPFLAGS "$@"
 715 }
 716
 717 add_cflags(){
 718     append CFLAGS $($cflags_filter "$@")
 719 }
 720
 721 add_cxxflags(){
 722     append CXXFLAGS $($cflags_filter "$@")
 723 }
 724
 725 add_asflags(){
 726     append ASFLAGS $($asflags_filter "$@")
 727 }
 728
 729 add_ldflags(){
 730     append LDFLAGS $($ldflags_filter "$@")
 731 }
 732
 733 add_extralibs(){
 734     prepend extralibs $($ldflags_filter "$@")
 735 }
 736
 737 add_host_cppflags(){
 738     append host_cppflags "$@"
 739 }
 740
 741 add_host_cflags(){
 742     append host_cflags $($host_cflags_filter "$@")
 743 }
 744
 745 add_host_ldflags(){
 746     append host_ldflags $($host_ldflags_filter "$@")
 747 }
 748
 749 add_compat(){
 750     append compat_objs $1
 751     shift
 752     map 'add_cppflags -D$v' "$@"
 753 }
 754
 755 check_cmd(){
 756     log "$@"
 757     "$@" >> $logfile 2>&1
 758 }
 759
 760 cc_o(){
 761     eval printf '%s\\n' $CC_O
 762 }
 763
 764 cc_e(){
 765     eval printf '%s\\n' $CC_E
 766 }
 767
 768 check_cc(){
 769     log check_cc "$@"
 770     cat > $TMPC
 771     log_file $TMPC
 772     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 773 }
 774
 775 check_cxx(){
 776     log check_cxx "$@"
 777     cat > $TMPCPP
 778     log_file $TMPCPP
 779     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 780 }
 781
 782 check_cpp(){
 783     log check_cpp "$@"
 784     cat > $TMPC
 785     log_file $TMPC
 786     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 787 }
 788
 789 as_o(){
 790     eval printf '%s\\n' $AS_O
 791 }
 792
 793 check_as(){
 794     log check_as "$@"
 795     cat > $TMPS
 796     log_file $TMPS
 797     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 798 }
 799
 800 check_inline_asm(){
 801     log check_inline_asm "$@"
 802     name="$1"
 803     code="$2"
 804     shift 2
 805     disable $name
 806     check_cc "$@" <<EOF && enable $name
 807 void foo(void){ __asm__ volatile($code); }
 808 EOF
 809 }
 810
 811 check_insn(){
 812     log check_insn "$@"
 813     check_inline_asm ${1}_inline "\"$2\""
 814     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 815 }
 816
 817 check_yasm(){
 818     log check_yasm "$@"
 819     echo "$1" > $TMPS
 820     log_file $TMPS
 821     shift 1
 822     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 823 }
 824
 825 ld_o(){
 826     eval printf '%s\\n' $LD_O
 827 }
 828
 829 check_ld(){
 830     log check_ld "$@"
 831     type=$1
 832     shift 1
 833     flags=$(filter_out '-l*|*.so' $@)
 834     libs=$(filter '-l*|*.so' $@)
 835     check_$type $($cflags_filter $flags) || return
 836     flags=$($ldflags_filter $flags)
 837     libs=$($ldflags_filter $libs)
 838     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 839 }
 840
 841 check_code(){
 842     log check_code "$@"
 843     check=$1
 844     headers=$2
 845     code=$3
 846     shift 3
 847     {
 848         for hdr in $headers; do
 849             echo "#include <$hdr>"
 850         done
 851         echo "int main(void) { $code; return 0; }"
 852     } | check_$check "$@"
 853 }
 854
 855 check_cppflags(){
 856     log check_cppflags "$@"
 857     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 858 int x;
 859 EOF
 860 }
 861
 862 test_cflags(){
 863     log test_cflags "$@"
 864     set -- $($cflags_filter "$@")
 865     check_cc "$@" <<EOF
 866 int x;
 867 EOF
 868 }
 869
 870 check_cflags(){
 871     log check_cflags "$@"
 872     test_cflags "$@" && add_cflags "$@"
 873 }
 874
 875 check_cxxflags(){
 876     log check_cxxflags "$@"
 877     set -- $($cflags_filter "$@")
 878     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 879 int x;
 880 EOF
 881 }
 882
 883 test_ldflags(){
 884     log test_ldflags "$@"
 885     check_ld "cc" "$@" <<EOF
 886 int main(void){ return 0; }
 887 EOF
 888 }
 889
 890 check_ldflags(){
 891     log check_ldflags "$@"
 892     test_ldflags "$@" && add_ldflags "$@"
 893 }
 894
 895 check_header(){
 896     log check_header "$@"
 897     header=$1
 898     shift
 899     disable_safe $header
 900     check_cpp "$@" <<EOF && enable_safe $header
 901 #include <$header>
 902 int x;
 903 EOF
 904 }
 905
 906 check_func(){
 907     log check_func "$@"
 908     func=$1
 909     shift
 910     disable $func
 911     check_ld "cc" "$@" <<EOF && enable $func
 912 extern int $func();
 913 int main(void){ $func(); }
 914 EOF
 915 }
 916
 917 check_mathfunc(){
 918     log check_mathfunc "$@"
 919     func=$1
 920     narg=$2
 921     shift 2
 922     test $narg = 2 && args="f, g" || args="f"
 923     disable $func
 924     check_ld "cc" "$@" <<EOF && enable $func
 925 #include <math.h>
 926 float foo(float f, float g) { return $func($args); }
 927 int main(void){ return (int) foo; }
 928 EOF
 929 }
 930
 931 check_func_headers(){
 932     log check_func_headers "$@"
 933     headers=$1
 934     funcs=$2
 935     shift 2
 936     {
 937         for hdr in $headers; do
 938             echo "#include <$hdr>"
 939         done
 940         for func in $funcs; do
 941             echo "long check_$func(void) { return (long) $func; }"
 942         done
 943         echo "int main(void) { return 0; }"
 944     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
 945 }
 946
 947 check_class_headers_cpp(){
 948     log check_class_headers_cpp "$@"
 949     headers=$1
 950     classes=$2
 951     shift 2
 952     {
 953         for hdr in $headers; do
 954             echo "#include <$hdr>"
 955         done
 956         echo "int main(void) { "
 957         i=1
 958         for class in $classes; do
 959             echo "$class obj$i;"
 960             i=$(expr $i + 1)
 961         done
 962         echo "return 0; }"
 963     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
 964 }
 965
 966 check_cpp_condition(){
 967     log check_cpp_condition "$@"
 968     header=$1
 969     condition=$2
 970     shift 2
 971     check_cpp "$@" <<EOF
 972 #include <$header>
 973 #if !($condition)
 974 #error "unsatisfied condition: $condition"
 975 #endif
 976 EOF
 977 }
 978
 979 check_lib(){
 980     log check_lib "$@"
 981     header="$1"
 982     func="$2"
 983     shift 2
 984     check_header $header && check_func $func "$@" && add_extralibs "$@"
 985 }
 986
 987 check_lib2(){
 988     log check_lib2 "$@"
 989     headers="$1"
 990     funcs="$2"
 991     shift 2
 992     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 993 }
 994
 995 check_lib_cpp(){
 996     log check_lib_cpp "$@"
 997     headers="$1"
 998     classes="$2"
 999     shift 2
1000     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1001 }
1002
1003 check_pkg_config(){
1004     log check_pkg_config "$@"
1005     pkg="$1"
1006     headers="$2"
1007     funcs="$3"
1008     shift 3
1009     check_cmd $pkg_config --exists --print-errors $pkg || return
1010     pkg_cflags=$($pkg_config --cflags $pkg)
1011     pkg_libs=$($pkg_config --libs $pkg)
1012     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1013         set_safe ${pkg}_cflags $pkg_cflags   &&
1014         set_safe ${pkg}_libs   $pkg_libs
1015 }
1016
1017 check_exec(){
1018     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1019 }
1020
1021 check_exec_crash(){
1022     code=$(cat)
1023
1024     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1025     # are safe but may not be available everywhere.  Thus we use
1026     # raise(SIGTERM) instead.  The check is run in a subshell so we
1027     # can redirect the "Terminated" message from the shell.  SIGBUS
1028     # is not defined by standard C so it is used conditionally.
1029
1030     (check_exec "$@") >> $logfile 2>&1 <<EOF
1031 #include <signal.h>
1032 static void sighandler(int sig){
1033     raise(SIGTERM);
1034 }
1035 int foo(void){
1036     $code
1037 }
1038 int (*func_ptr)(void) = foo;
1039 int main(void){
1040     signal(SIGILL, sighandler);
1041     signal(SIGFPE, sighandler);
1042     signal(SIGSEGV, sighandler);
1043 #ifdef SIGBUS
1044     signal(SIGBUS, sighandler);
1045 #endif
1046     return func_ptr();
1047 }
1048 EOF
1049 }
1050
1051 check_type(){
1052     log check_type "$@"
1053     headers=$1
1054     type=$2
1055     shift 2
1056     disable_safe "$type"
1057     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1058 }
1059
1060 check_struct(){
1061     log check_struct "$@"
1062     headers=$1
1063     struct=$2
1064     member=$3
1065     shift 3
1066     disable_safe "${struct}_${member}"
1067     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1068         enable_safe "${struct}_${member}"
1069 }
1070
1071 check_builtin(){
1072     log check_builtin "$@"
1073     name=$1
1074     headers=$2
1075     builtin=$3
1076     shift 3
1077     disable "$name"
1078     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1079 }
1080
1081 require(){
1082     name="$1"
1083     header="$2"
1084     func="$3"
1085     shift 3
1086     check_lib $header $func "$@" || die "ERROR: $name not found"
1087 }
1088
1089 require2(){
1090     name="$1"
1091     headers="$2"
1092     func="$3"
1093     shift 3
1094     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1095 }
1096
1097 require_cpp(){
1098     name="$1"
1099     headers="$2"
1100     classes="$3"
1101     shift 3
1102     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1103 }
1104
1105 require_pkg_config(){
1106     pkg="$1"
1107     check_pkg_config "$@" || die "ERROR: $pkg not found"
1108     add_cflags    $(get_safe ${pkg}_cflags)
1109     add_extralibs $(get_safe ${pkg}_libs)
1110 }
1111
1112 hostcc_o(){
1113     eval printf '%s\\n' $HOSTCC_O
1114 }
1115
1116 check_host_cc(){
1117     log check_host_cc "$@"
1118     cat > $TMPC
1119     log_file $TMPC
1120     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1121 }
1122
1123 check_host_cppflags(){
1124     log check_host_cppflags "$@"
1125     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1126 int x;
1127 EOF
1128 }
1129
1130 check_host_cflags(){
1131     log check_host_cflags "$@"
1132     set -- $($host_cflags_filter "$@")
1133     check_host_cc "$@" <<EOF && append host_cflags "$@"
1134 int x;
1135 EOF
1136 }
1137
1138 apply(){
1139     file=$1
1140     shift
1141     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1142 }
1143
1144 cp_if_changed(){
1145     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1146     mkdir -p "$(dirname $2)"
1147     $cp_f "$1" "$2"
1148 }
1149
1150 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1151 # system-dependent things.
1152
1153 COMPONENT_LIST="
1154     bsfs
1155     decoders
1156     demuxers
1157     encoders
1158     filters
1159     hwaccels
1160     indevs
1161     muxers
1162     outdevs
1163     parsers
1164     protocols
1165 "
1166
1167 EXAMPLE_LIST="
1168     muxing_example
1169 "
1170
1171 EXTERNAL_LIBRARY_LIST="
1172     avisynth
1173     bzlib
1174     crystalhd
1175     fontconfig
1176     frei0r
1177     gnutls
1178     iconv
1179     ladspa
1180     libaacplus
1181     libass
1182     libbluray
1183     libcaca
1184     libcdio
1185     libcelt
1186     libdc1394
1187     libfaac
1188     libfdk_aac
1189     libflite
1190     libfreetype
1191     libgme
1192     libgsm
1193     libiec61883
1194     libilbc
1195     libmodplug
1196     libmp3lame
1197     libnut
1198     libopencore_amrnb
1199     libopencore_amrwb
1200     libopencv
1201     libopenjpeg
1202     libopus
1203     libpulse
1204     libquvi
1205     librtmp
1206     libschroedinger
1207     libshine
1208     libsoxr
1209     libspeex
1210     libssh
1211     libstagefright_h264
1212     libtheora
1213     libtwolame
1214     libutvideo
1215     libv4l2
1216     libvidstab
1217     libvo_aacenc
1218     libvo_amrwbenc
1219     libvorbis
1220     libvpx
1221     libwavpack
1222     libx264
1223     libxavs
1224     libxvid
1225     libzmq
1226     libzvbi
1227     openal
1228     opencl
1229     openssl
1230     x11grab
1231     zlib
1232 "
1233
1234 DOCUMENT_LIST="
1235     doc
1236     htmlpages
1237     manpages
1238     podpages
1239     txtpages
1240 "
1241
1242 HWACCEL_LIST="
1243     dxva2
1244     vaapi
1245     vda
1246     vdpau
1247 "
1248
1249 LIBRARY_LIST="
1250     avcodec
1251     avdevice
1252     avfilter
1253     avformat
1254     avresample
1255     avutil
1256     postproc
1257     swresample
1258     swscale
1259 "
1260
1261 PROGRAM_LIST="
1262     ffplay
1263     ffprobe
1264     ffserver
1265     ffmpeg
1266 "
1267
1268 CONFIG_LIST="
1269     $COMPONENT_LIST
1270     $DOCUMENT_LIST
1271     $EXAMPLE_LIST
1272     $EXTERNAL_LIBRARY_LIST
1273     $HWACCEL_LIST
1274     $LIBRARY_LIST
1275     $PROGRAM_LIST
1276     dct
1277     dwt
1278     error_resilience
1279     fast_unaligned
1280     fft
1281     ftrapv
1282     gpl
1283     gray
1284     hardcoded_tables
1285     incompatible_libav_abi
1286     incompatible_fork_abi
1287     lsp
1288     lzo
1289     mdct
1290     memalign_hack
1291     memory_poisoning
1292     network
1293     nonfree
1294     pic
1295     rdft
1296     runtime_cpudetect
1297     safe_bitstream_reader
1298     shared
1299     small
1300     sram
1301     static
1302     swscale_alpha
1303     thumb
1304     version3
1305     xmm_clobber_test
1306 "
1307
1308 THREADS_LIST='
1309     pthreads
1310     w32threads
1311     os2threads
1312 '
1313
1314 ATOMICS_LIST='
1315     atomics_gcc
1316     atomics_suncc
1317     atomics_win32
1318 '
1319
1320 ARCH_LIST='
1321     aarch64
1322     alpha
1323     arm
1324     avr32
1325     avr32_ap
1326     avr32_uc
1327     bfin
1328     ia64
1329     m68k
1330     mips
1331     mips64
1332     parisc
1333     ppc
1334     ppc64
1335     s390
1336     sh4
1337     sparc
1338     sparc64
1339     tilegx
1340     tilepro
1341     tomi
1342     x86
1343     x86_32
1344     x86_64
1345 '
1346
1347 ARCH_EXT_LIST_ARM='
1348     armv5te
1349     armv6
1350     armv6t2
1351     neon
1352     vfp
1353     vfpv3
1354 '
1355
1356 ARCH_EXT_LIST_X86='
1357     amd3dnow
1358     amd3dnowext
1359     avx
1360     avx2
1361     fma4
1362     i686
1363     mmx
1364     mmxext
1365     sse
1366     sse2
1367     sse3
1368     sse4
1369     sse42
1370     ssse3
1371 '
1372
1373 ARCH_EXT_LIST="
1374     $ARCH_EXT_LIST_ARM
1375     $ARCH_EXT_LIST_X86
1376     altivec
1377     ppc4xx
1378     vis
1379     mipsfpu
1380     mips32r2
1381     mipsdspr1
1382     mipsdspr2
1383 "
1384
1385 HAVE_LIST_CMDLINE='
1386     inline_asm
1387     symver
1388     yasm
1389 '
1390
1391 HAVE_LIST_PUB='
1392     bigendian
1393     fast_unaligned
1394     incompatible_libav_abi
1395     incompatible_fork_abi
1396 '
1397
1398 MATH_FUNCS="
1399     atanf
1400     atan2f
1401     cbrt
1402     cbrtf
1403     cosf
1404     exp2
1405     exp2f
1406     expf
1407     isinf
1408     isnan
1409     ldexpf
1410     llrint
1411     llrintf
1412     log2
1413     log2f
1414     log10f
1415     lrint
1416     lrintf
1417     powf
1418     rint
1419     round
1420     roundf
1421     sinf
1422     trunc
1423     truncf
1424 "
1425
1426 HAVE_LIST="
1427     $ARCH_EXT_LIST
1428     $(add_suffix _external $ARCH_EXT_LIST)
1429     $(add_suffix _inline   $ARCH_EXT_LIST)
1430     $HAVE_LIST_CMDLINE
1431     $HAVE_LIST_PUB
1432     $THREADS_LIST
1433     $ATOMICS_LIST
1434     $MATH_FUNCS
1435     access
1436     aligned_malloc
1437     aligned_stack
1438     alsa_asoundlib_h
1439     altivec_h
1440     arpa_inet_h
1441     asm_mod_q
1442     asm_mod_y
1443     asm_types_h
1444     atomic_cas_ptr
1445     atomics_native
1446     attribute_may_alias
1447     attribute_packed
1448     cdio_paranoia_h
1449     cdio_paranoia_paranoia_h
1450     CL_cl_h
1451     clock_gettime
1452     closesocket
1453     CommandLineToArgvW
1454     cpunop
1455     CryptGenRandom
1456     dcbzl
1457     dev_bktr_ioctl_bt848_h
1458     dev_bktr_ioctl_meteor_h
1459     dev_ic_bt8xx_h
1460     dev_video_bktr_ioctl_bt848_h
1461     dev_video_meteor_ioctl_meteor_h
1462     direct_h
1463     dlfcn_h
1464     dlopen
1465     dos_paths
1466     dxva_h
1467     ebp_available
1468     ebx_available
1469     fast_64bit
1470     fast_clz
1471     fast_cmov
1472     fcntl
1473     fork
1474     getaddrinfo
1475     gethrtime
1476     getopt
1477     GetProcessAffinityMask
1478     GetProcessMemoryInfo
1479     GetProcessTimes
1480     GetSystemTimeAsFileTime
1481     getrusage
1482     getservbyport
1483     gettimeofday
1484     glob
1485     gnu_as
1486     gsm_h
1487     ibm_asm
1488     inet_aton
1489     io_h
1490     inline_asm_labels
1491     isatty
1492     jack_port_get_latency_range
1493     kbhit
1494     ldbrx
1495     libdc1394_1
1496     libdc1394_2
1497     local_aligned_16
1498     local_aligned_8
1499     localtime_r
1500     loongson
1501     lzo1x_999_compress
1502     machine_ioctl_bt848_h
1503     machine_ioctl_meteor_h
1504     machine_rw_barrier
1505     makeinfo
1506     malloc_h
1507     MapViewOfFile
1508     memalign
1509     MemoryBarrier
1510     mkstemp
1511     mm_empty
1512     mmap
1513     mprotect
1514     msvcrt
1515     nanosleep
1516     openjpeg_1_5_openjpeg_h
1517     PeekNamedPipe
1518     perl
1519     pod2man
1520     poll_h
1521     posix_memalign
1522     pragma_deprecated
1523     pthread_cancel
1524     rdtsc
1525     rsync_contimeout
1526     sarestart
1527     sched_getaffinity
1528     sdl
1529     SetConsoleTextAttribute
1530     setmode
1531     setrlimit
1532     Sleep
1533     sndio_h
1534     socklen_t
1535     soundcard_h
1536     strerror_r
1537     struct_addrinfo
1538     struct_group_source_req
1539     struct_ip_mreq_source
1540     struct_ipv6_mreq
1541     struct_pollfd
1542     struct_rusage_ru_maxrss
1543     struct_sctp_event_subscribe
1544     struct_sockaddr_in6
1545     struct_sockaddr_sa_len
1546     struct_sockaddr_storage
1547     struct_stat_st_mtim_tv_nsec
1548     struct_v4l2_frmivalenum_discrete
1549     symver_asm_label
1550     symver_gnu_asm
1551     sync_val_compare_and_swap
1552     sysconf
1553     sysctl
1554     sys_mman_h
1555     sys_param_h
1556     sys_resource_h
1557     sys_select_h
1558     sys_soundcard_h
1559     sys_time_h
1560     sys_un_h
1561     sys_videoio_h
1562     termios_h
1563     texi2html
1564     threads
1565     unistd_h
1566     usleep
1567     vdpau_x11
1568     vfp_args
1569     VirtualAlloc
1570     windows_h
1571     winsock2_h
1572     xform_asm
1573     xlib
1574     xmm_clobbers
1575 "
1576
1577 # options emitted with CONFIG_ prefix but not available on the command line
1578 CONFIG_EXTRA="
1579     aandcttables
1580     ac3dsp
1581     audio_frame_queue
1582     dsputil
1583     exif
1584     frame_thread_encoder
1585     gcrypt
1586     golomb
1587     gplv3
1588     h263dsp
1589     h264chroma
1590     h264dsp
1591     h264pred
1592     h264qpel
1593     hpeldsp
1594     huffman
1595     lgplv3
1596     lpc
1597     mpegaudio
1598     mpegaudiodsp
1599     mpegvideo
1600     mpegvideoenc
1601     nettle
1602     rangecoder
1603     riffdec
1604     riffenc
1605     rtpdec
1606     rtpenc_chain
1607     sinewin
1608     videodsp
1609     vp3dsp
1610 "
1611
1612 CMDLINE_SELECT="
1613     $ARCH_EXT_LIST
1614     $CONFIG_LIST
1615     $HAVE_LIST_CMDLINE
1616     $THREADS_LIST
1617     asm
1618     cross_compile
1619     debug
1620     extra_warnings
1621     logging
1622     lto
1623     optimizations
1624     rpath
1625     stripping
1626 "
1627
1628 PATHS_LIST='
1629     bindir
1630     datadir
1631     docdir
1632     incdir
1633     libdir
1634     mandir
1635     prefix
1636     shlibdir
1637 '
1638
1639 CMDLINE_SET="
1640     $PATHS_LIST
1641     ar
1642     arch
1643     as
1644     assert_level
1645     build_suffix
1646     cc
1647     cpu
1648     cross_prefix
1649     cxx
1650     dep_cc
1651     extra_version
1652     host_cc
1653     host_cflags
1654     host_ld
1655     host_ldflags
1656     host_libs
1657     host_os
1658     install
1659     ld
1660     logfile
1661     malloc_prefix
1662     nm
1663     optflags
1664     pkg_config
1665     progs_suffix
1666     random_seed
1667     samples
1668     strip
1669     sysinclude
1670     sysroot
1671     target_exec
1672     target_os
1673     target_path
1674     target_samples
1675     tempprefix
1676     toolchain
1677     valgrind
1678     yasmexe
1679 "
1680
1681 CMDLINE_APPEND="
1682     extra_cflags
1683     extra_cxxflags
1684     host_cppflags
1685 "
1686
1687 # code dependency declarations
1688
1689 # architecture extensions
1690
1691 armv5te_deps="arm"
1692 armv6_deps="arm"
1693 armv6t2_deps="arm"
1694 neon_deps="arm"
1695 vfp_deps="arm"
1696 vfpv3_deps="vfp"
1697
1698 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1699
1700 mipsfpu_deps="mips"
1701 mips32r2_deps="mips"
1702 mipsdspr1_deps="mips"
1703 mipsdspr2_deps="mips"
1704
1705 altivec_deps="ppc"
1706 ppc4xx_deps="ppc"
1707
1708 vis_deps="sparc"
1709
1710 cpunop_deps="i686"
1711 x86_64_select="i686"
1712 x86_64_suggest="fast_cmov"
1713
1714 amd3dnow_deps="mmx"
1715 amd3dnowext_deps="amd3dnow"
1716 mmx_deps="x86"
1717 mmxext_deps="mmx"
1718 sse_deps="mmxext"
1719 sse2_deps="sse"
1720 sse3_deps="sse2"
1721 ssse3_deps="sse3"
1722 sse4_deps="ssse3"
1723 sse42_deps="sse4"
1724 avx_deps="sse42"
1725 fma4_deps="avx"
1726 avx2_deps="avx"
1727
1728 mmx_external_deps="yasm"
1729 mmx_inline_deps="inline_asm"
1730 mmx_suggest="mmx_external mmx_inline"
1731
1732 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1733     eval dep=\$${ext}_deps
1734     eval ${ext}_external_deps='"${dep}_external"'
1735     eval ${ext}_inline_deps='"${dep}_inline"'
1736     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1737 done
1738
1739 aligned_stack_if_any="ppc x86"
1740 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1741 fast_clz_if_any="alpha avr32 mips ppc x86"
1742 fast_unaligned_if_any="ppc x86"
1743
1744 inline_asm_deps="!tms470"
1745 need_memalign="altivec neon sse"
1746
1747 symver_if_any="symver_asm_label symver_gnu_asm"
1748
1749 log2_deps="!msvcrt"
1750
1751 # subsystems
1752 dct_select="rdft"
1753 error_resilience_select="dsputil"
1754 frame_thread_encoder_deps="encoders threads"
1755 lpc_select="dsputil"
1756 mdct_select="fft"
1757 rdft_select="fft"
1758 mpegaudio_select="mpegaudiodsp"
1759 mpegaudiodsp_select="dct"
1760 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1761 mpegvideoenc_select="mpegvideo"
1762
1763 # decoders / encoders
1764 aac_decoder_select="mdct sinewin"
1765 aac_encoder_select="audio_frame_queue mdct sinewin"
1766 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1767 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1768 ac3_encoder_select="mdct ac3dsp dsputil"
1769 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1770 aic_decoder_select="dsputil golomb"
1771 alac_encoder_select="lpc"
1772 als_decoder_select="dsputil"
1773 amrnb_decoder_select="lsp"
1774 amrwb_decoder_select="lsp"
1775 amv_decoder_select="dsputil hpeldsp exif"
1776 amv_encoder_select="aandcttables"
1777 ape_decoder_select="dsputil"
1778 asv1_decoder_select="dsputil"
1779 asv1_encoder_select="dsputil"
1780 asv2_decoder_select="dsputil"
1781 asv2_encoder_select="dsputil"
1782 atrac1_decoder_select="mdct sinewin"
1783 atrac3_decoder_select="mdct"
1784 avrn_decoder_select="exif"
1785 bink_decoder_select="dsputil hpeldsp"
1786 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1787 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1788 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1789 cllc_decoder_select="dsputil"
1790 comfortnoise_encoder_select="lpc"
1791 cook_decoder_select="dsputil mdct sinewin"
1792 cscd_decoder_select="lzo"
1793 cscd_decoder_suggest="zlib"
1794 dca_decoder_select="mdct"
1795 dirac_decoder_select="dsputil dwt golomb videodsp"
1796 dnxhd_decoder_select="dsputil"
1797 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1798 dvvideo_decoder_select="dsputil"
1799 dvvideo_encoder_select="dsputil"
1800 dxa_decoder_select="zlib"
1801 eac3_decoder_select="ac3_decoder"
1802 eac3_encoder_select="ac3_encoder"
1803 eamad_decoder_select="aandcttables dsputil mpegvideo"
1804 eatgq_decoder_select="aandcttables"
1805 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1806 exr_decoder_select="zlib"
1807 ffv1_decoder_select="dsputil golomb rangecoder"
1808 ffv1_encoder_select="dsputil rangecoder"
1809 ffvhuff_decoder_select="dsputil"
1810 ffvhuff_encoder_select="dsputil huffman"
1811 flac_decoder_select="golomb"
1812 flac_encoder_select="dsputil golomb lpc"
1813 flashsv_decoder_select="zlib"
1814 flashsv_encoder_select="zlib"
1815 flashsv2_encoder_select="zlib"
1816 flashsv2_decoder_select="zlib"
1817 flv_decoder_select="h263_decoder"
1818 flv_encoder_select="h263_encoder"
1819 fourxm_decoder_select="dsputil"
1820 fraps_decoder_select="dsputil huffman"
1821 g2m_decoder_select="dsputil zlib"
1822 g729_decoder_select="dsputil"
1823 h261_decoder_select="error_resilience mpegvideo"
1824 h261_encoder_select="aandcttables mpegvideoenc"
1825 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1826 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1827 h263i_decoder_select="h263_decoder"
1828 h263p_encoder_select="h263_encoder"
1829 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1830 h264_decoder_suggest="error_resilience"
1831 hevc_decoder_select="dsputil golomb videodsp"
1832 huffyuv_decoder_select="dsputil"
1833 huffyuv_encoder_select="dsputil huffman"
1834 iac_decoder_select="dsputil fft mdct sinewin"
1835 imc_decoder_select="dsputil fft mdct sinewin"
1836 indeo3_decoder_select="hpeldsp"
1837 interplay_video_decoder_select="hpeldsp"
1838 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1839 jpegls_encoder_select="golomb"
1840 jv_decoder_select="dsputil"
1841 lagarith_decoder_select="dsputil"
1842 ljpeg_encoder_select="aandcttables mpegvideoenc"
1843 loco_decoder_select="golomb"
1844 mdec_decoder_select="dsputil error_resilience mpegvideo"
1845 metasound_decoder_select="lsp mdct sinewin"
1846 mimic_decoder_select="dsputil hpeldsp"
1847 mjpeg_decoder_select="dsputil hpeldsp exif"
1848 mjpegb_decoder_select="dsputil hpeldsp exif"
1849 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1850 mlp_decoder_select="dsputil mlp_parser"
1851 motionpixels_decoder_select="dsputil"
1852 mp1_decoder_select="mpegaudio"
1853 mp1float_decoder_select="mpegaudio"
1854 mp2_decoder_select="mpegaudio"
1855 mp2float_decoder_select="mpegaudio"
1856 mp3_decoder_select="mpegaudio"
1857 mp3adu_decoder_select="mpegaudio"
1858 mp3adufloat_decoder_select="mpegaudio"
1859 mp3float_decoder_select="mpegaudio"
1860 mp3on4_decoder_select="mpegaudio"
1861 mp3on4float_decoder_select="mpegaudio"
1862 mpc7_decoder_select="dsputil mpegaudiodsp"
1863 mpc8_decoder_select="dsputil mpegaudiodsp"
1864 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1865 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1866 mpeg1video_decoder_select="error_resilience mpegvideo"
1867 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1868 mpeg2video_decoder_select="error_resilience mpegvideo"
1869 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1870 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1871 mpeg4_encoder_select="h263_encoder"
1872 msmpeg4v1_decoder_select="h263_decoder"
1873 msmpeg4v2_decoder_select="h263_decoder"
1874 msmpeg4v2_encoder_select="h263_encoder"
1875 msmpeg4v3_decoder_select="h263_decoder"
1876 msmpeg4v3_encoder_select="h263_encoder"
1877 mss2_decoder_select="error_resilience vc1_decoder"
1878 mxpeg_decoder_select="dsputil hpeldsp exif"
1879 nellymoser_decoder_select="mdct sinewin"
1880 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1881 nuv_decoder_select="dsputil lzo"
1882 png_decoder_select="zlib"
1883 png_encoder_select="dsputil zlib"
1884 prores_decoder_select="dsputil"
1885 prores_encoder_select="dsputil"
1886 qcelp_decoder_select="lsp"
1887 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1888 ra_144_encoder_select="audio_frame_queue lpc"
1889 ralf_decoder_select="golomb"
1890 rtjpeg_decoder_select="dsputil"
1891 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1892 rv10_encoder_select="h263_encoder"
1893 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1894 rv20_encoder_select="h263_encoder"
1895 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1896 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1897 shorten_decoder_select="golomb"
1898 sipr_decoder_select="lsp"
1899 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1900 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1901 sonic_decoder_select="golomb"
1902 sonic_encoder_select="golomb"
1903 sonic_ls_encoder_select="golomb"
1904 sp5x_decoder_select="dsputil hpeldsp exif"
1905 svq1_decoder_select="hpeldsp"
1906 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1907 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1908 svq3_decoder_suggest="error_resilience zlib"
1909 tak_decoder_select="dsputil"
1910 theora_decoder_select="vp3_decoder"
1911 tiff_decoder_suggest="zlib"
1912 tiff_encoder_suggest="zlib"
1913 thp_decoder_select="dsputil hpeldsp exif"
1914 truehd_decoder_select="mlp_parser"
1915 truemotion2_decoder_select="dsputil"
1916 truespeech_decoder_select="dsputil"
1917 tscc_decoder_select="zlib"
1918 twinvq_decoder_select="mdct lsp sinewin"
1919 utvideo_decoder_select="dsputil"
1920 utvideo_encoder_select="dsputil huffman"
1921 vble_decoder_select="dsputil"
1922 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1923 vc1image_decoder_select="vc1_decoder"
1924 vorbis_decoder_select="mdct"
1925 vorbis_encoder_select="mdct"
1926 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1927 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1928 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1929 vp6a_decoder_select="vp6_decoder"
1930 vp6f_decoder_select="vp6_decoder"
1931 vp8_decoder_select="h264pred videodsp"
1932 vp9_decoder_select="videodsp"
1933 webp_decoder_select="vp8_decoder"
1934 wmapro_decoder_select="mdct sinewin"
1935 wmav1_decoder_select="mdct sinewin"
1936 wmav1_encoder_select="mdct sinewin"
1937 wmav2_decoder_select="mdct sinewin"
1938 wmav2_encoder_select="mdct sinewin"
1939 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1940 wmv1_decoder_select="h263_decoder"
1941 wmv1_encoder_select="h263_encoder"
1942 wmv2_decoder_select="h263_decoder videodsp"
1943 wmv2_encoder_select="h263_encoder"
1944 wmv3_decoder_select="vc1_decoder"
1945 wmv3image_decoder_select="wmv3_decoder"
1946 zerocodec_decoder_select="zlib"
1947 zlib_decoder_select="zlib"
1948 zlib_encoder_select="zlib"
1949 zmbv_decoder_select="zlib"
1950 zmbv_encoder_select="zlib"
1951
1952 # hardware accelerators
1953 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1954 dxva2_deps="dxva2api_h"
1955 vaapi_deps="va_va_h"
1956 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1957 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1958 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1959
1960 h263_vaapi_hwaccel_deps="vaapi"
1961 h263_vaapi_hwaccel_select="h263_decoder"
1962 h263_vdpau_hwaccel_deps="vdpau"
1963 h263_vdpau_hwaccel_select="h263_decoder"
1964 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1965 h264_dxva2_hwaccel_deps="dxva2"
1966 h264_dxva2_hwaccel_select="h264_decoder"
1967 h264_vaapi_hwaccel_deps="vaapi"
1968 h264_vaapi_hwaccel_select="h264_decoder"
1969 h264_vda_decoder_deps="vda"
1970 h264_vda_decoder_select="h264_decoder"
1971 h264_vda_hwaccel_deps="vda"
1972 h264_vda_hwaccel_select="h264_decoder"
1973 h264_vdpau_decoder_deps="vdpau"
1974 h264_vdpau_decoder_select="h264_decoder"
1975 h264_vdpau_hwaccel_deps="vdpau"
1976 h264_vdpau_hwaccel_select="h264_decoder"
1977 mpeg_vdpau_decoder_deps="vdpau"
1978 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1979 mpeg1_vdpau_decoder_deps="vdpau"
1980 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1981 mpeg1_vdpau_hwaccel_deps="vdpau"
1982 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1983 mpeg2_crystalhd_decoder_select="crystalhd"
1984 mpeg2_dxva2_hwaccel_deps="dxva2"
1985 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1986 mpeg2_vaapi_hwaccel_deps="vaapi"
1987 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1988 mpeg2_vdpau_hwaccel_deps="vdpau"
1989 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1990 mpeg4_crystalhd_decoder_select="crystalhd"
1991 mpeg4_vaapi_hwaccel_deps="vaapi"
1992 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1993 mpeg4_vdpau_decoder_deps="vdpau"
1994 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1995 mpeg4_vdpau_hwaccel_deps="vdpau"
1996 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1997 msmpeg4_crystalhd_decoder_select="crystalhd"
1998 vc1_crystalhd_decoder_select="crystalhd"
1999 vc1_dxva2_hwaccel_deps="dxva2"
2000 vc1_dxva2_hwaccel_select="vc1_decoder"
2001 vc1_vaapi_hwaccel_deps="vaapi"
2002 vc1_vaapi_hwaccel_select="vc1_decoder"
2003 vc1_vdpau_decoder_deps="vdpau"
2004 vc1_vdpau_decoder_select="vc1_decoder"
2005 vc1_vdpau_hwaccel_deps="vdpau"
2006 vc1_vdpau_hwaccel_select="vc1_decoder"
2007 wmv3_crystalhd_decoder_select="crystalhd"
2008 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2009 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2010 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2011 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2012
2013 # parsers
2014 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
2015 hevc_parser_select="hevc_decoder"
2016 mpeg4video_parser_select="error_resilience mpegvideo"
2017 mpegvideo_parser_select="error_resilience mpegvideo"
2018 vc1_parser_select="mpegvideo"
2019
2020 # external libraries
2021 libaacplus_encoder_deps="libaacplus"
2022 libcelt_decoder_deps="libcelt"
2023 libfaac_encoder_deps="libfaac"
2024 libfaac_encoder_select="audio_frame_queue"
2025 libfdk_aac_decoder_deps="libfdk_aac"
2026 libfdk_aac_encoder_deps="libfdk_aac"
2027 libfdk_aac_encoder_select="audio_frame_queue"
2028 libgme_demuxer_deps="libgme"
2029 libgsm_decoder_deps="libgsm"
2030 libgsm_encoder_deps="libgsm"
2031 libgsm_ms_decoder_deps="libgsm"
2032 libgsm_ms_encoder_deps="libgsm"
2033 libilbc_decoder_deps="libilbc"
2034 libilbc_encoder_deps="libilbc"
2035 libmodplug_demuxer_deps="libmodplug"
2036 libmp3lame_encoder_deps="libmp3lame"
2037 libmp3lame_encoder_select="audio_frame_queue"
2038 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2039 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2040 libopencore_amrnb_encoder_select="audio_frame_queue"
2041 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2042 libopenjpeg_decoder_deps="libopenjpeg"
2043 libopenjpeg_encoder_deps="libopenjpeg"
2044 libopus_decoder_deps="libopus"
2045 libopus_encoder_deps="libopus"
2046 libopus_encoder_select="audio_frame_queue"
2047 libquvi_demuxer_deps="libquvi"
2048 libschroedinger_decoder_deps="libschroedinger"
2049 libschroedinger_encoder_deps="libschroedinger"
2050 libshine_encoder_deps="libshine"
2051 libshine_encoder_select="audio_frame_queue"
2052 libspeex_decoder_deps="libspeex"
2053 libspeex_encoder_deps="libspeex"
2054 libspeex_encoder_select="audio_frame_queue"
2055 libstagefright_h264_decoder_deps="libstagefright_h264"
2056 libtheora_encoder_deps="libtheora"
2057 libtwolame_encoder_deps="libtwolame"
2058 libvo_aacenc_encoder_deps="libvo_aacenc"
2059 libvo_aacenc_encoder_select="audio_frame_queue"
2060 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2061 libvorbis_decoder_deps="libvorbis"
2062 libvorbis_encoder_deps="libvorbis"
2063 libvorbis_encoder_select="audio_frame_queue"
2064 libvpx_vp8_decoder_deps="libvpx"
2065 libvpx_vp8_encoder_deps="libvpx"
2066 libvpx_vp9_decoder_deps="libvpx"
2067 libvpx_vp9_encoder_deps="libvpx"
2068 libwavpack_encoder_deps="libwavpack"
2069 libx264_encoder_deps="libx264"
2070 libx264rgb_encoder_deps="libx264"
2071 libxavs_encoder_deps="libxavs"
2072 libxvid_encoder_deps="libxvid"
2073 libutvideo_decoder_deps="libutvideo"
2074 libutvideo_encoder_deps="libutvideo"
2075 libzvbi_teletext_decoder_deps="libzvbi"
2076
2077 # demuxers / muxers
2078 ac3_demuxer_select="ac3_parser"
2079 asf_demuxer_select="riffdec"
2080 asf_muxer_select="riffenc"
2081 asf_stream_muxer_select="asf_muxer"
2082 avi_demuxer_select="riffdec"
2083 avi_muxer_select="riffenc"
2084 avisynth_demuxer_deps="avisynth"
2085 avisynth_demuxer_select="riffdec"
2086 caf_demuxer_select="riffdec"
2087 dirac_demuxer_select="dirac_parser"
2088 dts_demuxer_select="dca_parser"
2089 dtshd_demuxer_select="dca_parser"
2090 dxa_demuxer_select="riffdec"
2091 eac3_demuxer_select="ac3_parser"
2092 f4v_muxer_select="mov_muxer"
2093 flac_demuxer_select="flac_parser"
2094 hds_muxer_select="flv_muxer"
2095 hls_muxer_select="mpegts_muxer"
2096 ipod_muxer_select="mov_muxer"
2097 ismv_muxer_select="mov_muxer"
2098 libnut_demuxer_deps="libnut"
2099 libnut_muxer_deps="libnut"
2100 matroska_audio_muxer_select="matroska_muxer"
2101 matroska_demuxer_select="riffdec"
2102 matroska_demuxer_suggest="bzlib lzo zlib"
2103 matroska_muxer_select="riffenc"
2104 mmf_muxer_select="riffenc"
2105 mov_demuxer_select="riffdec"
2106 mov_demuxer_suggest="zlib"
2107 mov_muxer_select="riffenc rtpenc_chain"
2108 mp3_demuxer_select="mpegaudio_parser"
2109 mp4_muxer_select="mov_muxer"
2110 mpegts_muxer_select="adts_muxer latm_muxer"
2111 mpegtsraw_demuxer_select="mpegts_demuxer"
2112 mxf_d10_muxer_select="mxf_muxer"
2113 nut_muxer_select="riffenc"
2114 nuv_demuxer_select="riffdec"
2115 ogg_demuxer_select="golomb"
2116 psp_muxer_select="mov_muxer"
2117 rtp_demuxer_select="sdp_demuxer"
2118 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2119 rtsp_demuxer_select="http_protocol rtpdec"
2120 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2121 sap_demuxer_select="sdp_demuxer"
2122 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2123 sdp_demuxer_select="rtpdec"
2124 smoothstreaming_muxer_select="ismv_muxer"
2125 spdif_muxer_select="aac_parser"
2126 tak_demuxer_select="tak_parser"
2127 tg2_muxer_select="mov_muxer"
2128 tgp_muxer_select="mov_muxer"
2129 vobsub_demuxer_select="mpegps_demuxer"
2130 w64_demuxer_select="wav_demuxer"
2131 w64_muxer_select="wav_muxer"
2132 wav_demuxer_select="riffdec"
2133 wav_muxer_select="riffenc"
2134 webm_muxer_select="riffenc"
2135 wtv_demuxer_select="riffdec"
2136 xmv_demuxer_select="riffdec"
2137 xwma_demuxer_select="riffdec"
2138
2139 # indevs / outdevs
2140 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2141 alsa_outdev_deps="alsa_asoundlib_h"
2142 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2143 caca_outdev_deps="libcaca"
2144 dshow_indev_deps="IBaseFilter"
2145 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2146 dv1394_indev_deps="dv1394"
2147 dv1394_indev_select="dv_demuxer"
2148 fbdev_indev_deps="linux_fb_h"
2149 fbdev_outdev_deps="linux_fb_h"
2150 iec61883_indev_deps="libiec61883"
2151 jack_indev_deps="jack_jack_h sem_timedwait"
2152 lavfi_indev_deps="avfilter"
2153 libcdio_indev_deps="libcdio"
2154 libdc1394_indev_deps="libdc1394"
2155 libv4l2_indev_deps="libv4l2"
2156 openal_indev_deps="openal"
2157 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2158 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2159 pulse_indev_deps="libpulse"
2160 pulse_outdev_deps="libpulse"
2161 sdl_outdev_deps="sdl"
2162 sndio_indev_deps="sndio_h"
2163 sndio_outdev_deps="sndio_h"
2164 v4l_indev_deps="linux_videodev_h"
2165 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2166 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2167 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2168 vfwcap_indev_extralibs="-lavicap32"
2169 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2170 xv_outdev_extralibs="-lXv -lX11 -lXext"
2171 x11grab_indev_deps="x11grab"
2172
2173 # protocols
2174 bluray_protocol_deps="libbluray"
2175 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2176 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2177 ffrtmpcrypt_protocol_select="tcp_protocol"
2178 ffrtmphttp_protocol_deps="!librtmp_protocol"
2179 ffrtmphttp_protocol_select="http_protocol"
2180 ftp_protocol_select="tcp_protocol"
2181 gopher_protocol_select="network"
2182 httpproxy_protocol_select="tcp_protocol"
2183 http_protocol_select="tcp_protocol"
2184 https_protocol_select="tls_protocol"
2185 librtmp_protocol_deps="librtmp"
2186 librtmpe_protocol_deps="librtmp"
2187 librtmps_protocol_deps="librtmp"
2188 librtmpt_protocol_deps="librtmp"
2189 librtmpte_protocol_deps="librtmp"
2190 libssh_protocol_deps="libssh"
2191 mmsh_protocol_select="http_protocol"
2192 mmst_protocol_select="network"
2193 rtmp_protocol_deps="!librtmp_protocol"
2194 rtmp_protocol_select="tcp_protocol"
2195 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2196 rtmps_protocol_deps="!librtmp_protocol"
2197 rtmps_protocol_select="tls_protocol"
2198 rtmpt_protocol_select="ffrtmphttp_protocol"
2199 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2200 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2201 rtp_protocol_select="udp_protocol"
2202 sctp_protocol_deps="struct_sctp_event_subscribe"
2203 sctp_protocol_select="network"
2204 srtp_protocol_select="rtp_protocol"
2205 tcp_protocol_select="network"
2206 tls_protocol_deps_any="openssl gnutls"
2207 tls_protocol_select="tcp_protocol"
2208 udp_protocol_select="network"
2209 unix_protocol_deps="sys_un_h"
2210 unix_protocol_select="network"
2211
2212 # filters
2213 aconvert_filter_deps="swresample"
2214 amovie_filter_deps="avcodec avformat"
2215 aresample_filter_deps="swresample"
2216 ass_filter_deps="libass"
2217 asyncts_filter_deps="avresample"
2218 atempo_filter_deps="avcodec"
2219 atempo_filter_select="rdft"
2220 azmq_filter_deps="libzmq"
2221 blackframe_filter_deps="gpl"
2222 boxblur_filter_deps="gpl"
2223 colormatrix_filter_deps="gpl"
2224 cropdetect_filter_deps="gpl"
2225 dctdnoiz_filter_deps="avcodec"
2226 dctdnoiz_filter_select="fft"
2227 delogo_filter_deps="gpl"
2228 deshake_filter_deps="avcodec"
2229 deshake_filter_select="dsputil"
2230 drawtext_filter_deps="libfreetype"
2231 ebur128_filter_deps="gpl"
2232 flite_filter_deps="libflite"
2233 frei0r_filter_deps="frei0r dlopen"
2234 frei0r_filter_extralibs='$ldl'
2235 frei0r_src_filter_deps="frei0r dlopen"
2236 frei0r_src_filter_extralibs='$ldl'
2237 geq_filter_deps="gpl"
2238 histeq_filter_deps="gpl"
2239 hqdn3d_filter_deps="gpl"
2240 interlace_filter_deps="gpl"
2241 kerndeint_filter_deps="gpl"
2242 ladspa_filter_deps="ladspa dlopen"
2243 mcdeint_filter_deps="avcodec gpl"
2244 movie_filter_deps="avcodec avformat"
2245 mp_filter_deps="gpl avcodec swscale inline_asm"
2246 mpdecimate_filter_deps="gpl avcodec"
2247 mptestsrc_filter_deps="gpl"
2248 negate_filter_deps="lut_filter"
2249 perspective_filter_deps="gpl"
2250 resample_filter_deps="avresample"
2251 ocv_filter_deps="libopencv"
2252 owdenoise_filter_deps="gpl"
2253 pan_filter_deps="swresample"
2254 phase_filter_deps="gpl"
2255 pp_filter_deps="gpl postproc"
2256 pullup_filter_deps="gpl"
2257 removelogo_filter_deps="avcodec avformat swscale"
2258 sab_filter_deps="gpl swscale"
2259 scale_filter_deps="swscale"
2260 smartblur_filter_deps="gpl swscale"
2261 showspectrum_filter_deps="avcodec"
2262 showspectrum_filter_select="rdft"
2263 spp_filter_deps="gpl avcodec"
2264 spp_filter_select="fft"
2265 stereo3d_filter_deps="gpl"
2266 subtitles_filter_deps="avformat avcodec libass"
2267 super2xsai_filter_deps="gpl"
2268 tinterlace_filter_deps="gpl"
2269 vidstabdetect_filter_deps="libvidstab"
2270 vidstabtransform_filter_deps="libvidstab"
2271 yadif_filter_deps="gpl"
2272 pixfmts_super2xsai_test_deps="super2xsai_filter"
2273 tinterlace_merge_test_deps="tinterlace_filter"
2274 tinterlace_pad_test_deps="tinterlace_filter"
2275 zmq_filter_deps="libzmq"
2276
2277 # examples
2278 muxing_example_deps="avcodec avformat avutil swscale"
2279
2280 # libraries
2281 avcodec_deps="avutil"
2282 avdevice_deps="avutil avcodec avformat"
2283 avfilter_deps="avutil"
2284 avformat_deps="avutil avcodec"
2285 avresample_deps="avutil"
2286 postproc_deps="avutil gpl"
2287 swscale_deps="avutil"
2288
2289 # programs
2290 ffmpeg_deps="avcodec avfilter avformat swresample"
2291 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2292                null_filter
2293                setpts_filter trim_filter"
2294 ffplay_deps="avcodec avformat swscale swresample sdl"
2295 ffplay_select="rdft crop_filter"
2296 ffprobe_deps="avcodec avformat"
2297 ffserver_deps="avformat fork sarestart"
2298 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2299 ffserver_extralibs='$ldl'
2300
2301 # documentation
2302 podpages_deps="perl"
2303 manpages_deps="perl pod2man"
2304 htmlpages_deps="texi2html"
2305 txtpages_deps="makeinfo"
2306 doc_deps_any="manpages htmlpages podpages txtpages"
2307
2308 # default parameters
2309
2310 logfile="config.log"
2311
2312 # installation paths
2313 prefix_default="/usr/local"
2314 bindir_default='${prefix}/bin'
2315 datadir_default='${prefix}/share/ffmpeg'
2316 docdir_default='${prefix}/share/doc/ffmpeg'
2317 incdir_default='${prefix}/include'
2318 libdir_default='${prefix}/lib'
2319 mandir_default='${prefix}/share/man'
2320 shlibdir_default="$libdir_default"
2321
2322 # toolchain
2323 ar_default="ar"
2324 cc_default="gcc"
2325 cxx_default="g++"
2326 host_cc_default="gcc"
2327 cp_f="cp -f"
2328 install="install"
2329 ln_s="ln -s -f"
2330 nm_default="nm -g"
2331 objformat="elf"
2332 pkg_config_default=pkg-config
2333 ranlib="ranlib"
2334 strip_default="strip"
2335 yasmexe_default="yasm"
2336
2337 nogas=":"
2338
2339 # machine
2340 arch_default=$(uname -m)
2341 cpu="generic"
2342
2343 # OS
2344 target_os_default=$(tolower $(uname -s))
2345 host_os=$target_os_default
2346
2347 # configurable options
2348 enable $PROGRAM_LIST
2349 enable $DOCUMENT_LIST
2350 enable $EXAMPLE_LIST
2351 enable $(filter_out avresample $LIBRARY_LIST)
2352 enable stripping
2353
2354 enable asm
2355 enable debug
2356 enable doc
2357 enable optimizations
2358 enable runtime_cpudetect
2359 enable safe_bitstream_reader
2360 enable static
2361 enable swscale_alpha
2362
2363 # Enable hwaccels by default.
2364 enable dxva2 vaapi vdpau
2365
2366 # build settings
2367 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2368 LIBPREF="lib"
2369 LIBSUF=".a"
2370 FULLNAME='$(NAME)$(BUILDSUF)'
2371 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2372 SLIBPREF="lib"
2373 SLIBSUF=".so"
2374 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2375 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2376 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2377 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2378 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2379 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2380
2381 asflags_filter=echo
2382 cflags_filter=echo
2383 ldflags_filter=echo
2384
2385 AS_C='-c'
2386 AS_O='-o $@'
2387 CC_C='-c'
2388 CC_E='-E -o $@'
2389 CC_O='-o $@'
2390 CXX_C='-c'
2391 CXX_O='-o $@'
2392 LD_O='-o $@'
2393 LD_LIB='-l%'
2394 LD_PATH='-L'
2395 HOSTCC_C='-c'
2396 HOSTCC_O='-o $@'
2397 HOSTLD_O='-o $@'
2398
2399 host_cflags='-O3 -g'
2400 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2401 host_libs='-lm'
2402 host_cflags_filter=echo
2403 host_ldflags_filter=echo
2404
2405 target_path='$(CURDIR)'
2406
2407 # since the object filename is not given with the -MM flag, the compiler
2408 # is only able to print the basename, and we must add the path ourselves
2409 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2410 DEPFLAGS='-MM'
2411
2412 # find source path
2413 if test -f configure; then
2414     source_path=.
2415 else
2416     source_path=$(cd $(dirname "$0"); pwd)
2417     echo "$source_path" | grep -q '[[:blank:]]' &&
2418         die "Out of tree builds are impossible with whitespace in source path."
2419     test -e "$source_path/config.h" &&
2420         die "Out of tree builds are impossible with config.h in source dir."
2421 fi
2422
2423 for v in "$@"; do
2424     r=${v#*=}
2425     l=${v%"$r"}
2426     r=$(sh_quote "$r")
2427     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2428 done
2429
2430 find_things(){
2431     thing=$1
2432     pattern=$2
2433     file=$source_path/$3
2434     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2435 }
2436
2437 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2438 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2439 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2440 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2441 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2442 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2443 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2444 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2445 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2446 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2447 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2448
2449 ALL_COMPONENTS="
2450     $BSF_LIST
2451     $DECODER_LIST
2452     $DEMUXER_LIST
2453     $ENCODER_LIST
2454     $FILTER_LIST
2455     $HWACCEL_LIST
2456     $INDEV_LIST
2457     $MUXER_LIST
2458     $OUTDEV_LIST
2459     $PARSER_LIST
2460     $PROTOCOL_LIST
2461 "
2462
2463 for n in $COMPONENT_LIST; do
2464     v=$(toupper ${n%s})_LIST
2465     eval enable \$$v
2466     eval ${n}_if_any="\$$v"
2467 done
2468
2469 enable $ARCH_EXT_LIST
2470
2471 die_unknown(){
2472     echo "Unknown option \"$1\"."
2473     echo "See $0 --help for available options."
2474     exit 1
2475 }
2476
2477 print_3_columns() {
2478     cat | tr ' ' '\n' | sort | pr -r -3 -t
2479 }
2480
2481 show_list() {
2482     suffix=_$1
2483     shift
2484     echo $* | sed s/$suffix//g | print_3_columns
2485     exit 0
2486 }
2487
2488 rand_list(){
2489     IFS=', '
2490     set -- $*
2491     unset IFS
2492     for thing; do
2493         comp=${thing%:*}
2494         prob=${thing#$comp}
2495         prob=${prob#:}
2496         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2497         echo "prob ${prob:-0.5}"
2498         printf '%s\n' $comp
2499     done
2500 }
2501
2502 do_random(){
2503     action=$1
2504     shift
2505     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2506     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2507 }
2508
2509 for opt do
2510     optval="${opt#*=}"
2511     case "$opt" in
2512         --extra-ldflags=*)
2513             add_ldflags $optval
2514         ;;
2515         --extra-libs=*)
2516             add_extralibs $optval
2517         ;;
2518         --disable-devices)
2519             disable $INDEV_LIST $OUTDEV_LIST
2520         ;;
2521         --enable-debug=*)
2522             debuglevel="$optval"
2523         ;;
2524         --disable-programs)
2525             disable $PROGRAM_LIST
2526         ;;
2527         --disable-everything)
2528             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2529         ;;
2530         --disable-all)
2531             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2532             disable $LIBRARY_LIST $PROGRAM_LIST doc
2533         ;;
2534         --enable-random|--disable-random)
2535             action=${opt%%-random}
2536             do_random ${action#--} $COMPONENT_LIST
2537         ;;
2538         --enable-random=*|--disable-random=*)
2539             action=${opt%%-random=*}
2540             do_random ${action#--} $optval
2541         ;;
2542         --enable-*=*|--disable-*=*)
2543             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2544             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2545             eval list=\$$(toupper $thing)_LIST
2546             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2547             list=$(filter "$name" $list)
2548             [ "$list" = "" ] && warn "Option $opt did not match anything"
2549             $action $list
2550         ;;
2551         --enable-?*|--disable-?*)
2552             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2553             if is_in $option $COMPONENT_LIST; then
2554                 test $action = disable && action=unset
2555                 eval $action \$$(toupper ${option%s})_LIST
2556             elif is_in $option $CMDLINE_SELECT; then
2557                 $action $option
2558             else
2559                 die_unknown $opt
2560             fi
2561         ;;
2562         --list-*)
2563             NAME="${opt#--list-}"
2564             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2565             NAME=${NAME%s}
2566             eval show_list $NAME \$$(toupper $NAME)_LIST
2567         ;;
2568         --help|-h) show_help
2569         ;;
2570         --fatal-warnings) enable fatal_warnings
2571         ;;
2572         *)
2573             optname="${opt%%=*}"
2574             optname="${optname#--}"
2575             optname=$(echo "$optname" | sed 's/-/_/g')
2576             if is_in $optname $CMDLINE_SET; then
2577                 eval $optname='$optval'
2578             elif is_in $optname $CMDLINE_APPEND; then
2579                 append $optname "$optval"
2580             else
2581                 die_unknown $opt
2582             fi
2583         ;;
2584     esac
2585 done
2586
2587 disabled logging && logfile=/dev/null
2588
2589 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2590 set >> $logfile
2591
2592 test -n "$cross_prefix" && enable cross_compile
2593
2594 if enabled cross_compile; then
2595     test -n "$arch" && test -n "$target_os" ||
2596         die "Must specify target arch and OS when cross-compiling"
2597 fi
2598
2599 ar_default="${cross_prefix}${ar_default}"
2600 cc_default="${cross_prefix}${cc_default}"
2601 cxx_default="${cross_prefix}${cxx_default}"
2602 nm_default="${cross_prefix}${nm_default}"
2603 pkg_config_default="${cross_prefix}${pkg_config_default}"
2604 ranlib="${cross_prefix}${ranlib}"
2605 strip_default="${cross_prefix}${strip_default}"
2606
2607 sysinclude_default="${sysroot}/usr/include"
2608
2609 test -n "$valgrind" && toolchain="valgrind-memcheck"
2610
2611 case "$toolchain" in
2612     clang-asan)
2613         cc_default="clang"
2614         add_cflags  -fsanitize=address
2615         add_ldflags -fsanitize=address
2616     ;;
2617     clang-tsan)
2618         cc_default="clang"
2619         add_cflags  -fsanitize=thread -pie
2620         add_ldflags -fsanitize=thread -pie
2621     ;;
2622     gcc-asan)
2623         cc_default="gcc"
2624         add_cflags  -fsanitize=address
2625         add_ldflags -fsanitize=address
2626     ;;
2627     gcc-tsan)
2628         cc_default="gcc"
2629         add_cflags  -fsanitize=thread -pie -fPIC
2630         add_ldflags -fsanitize=thread -pie -fPIC
2631     ;;
2632     valgrind-massif)
2633         target_exec_default=${valgrind:-"valgrind"}
2634         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"
2635     ;;
2636     valgrind-memcheck)
2637         target_exec_default=${valgrind:-"valgrind"}
2638         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2639     ;;
2640     msvc)
2641         # Check whether the current MSVC version needs the C99 converter.
2642         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2643         # support enough of C99 to build ffmpeg. Default to the new
2644         # behaviour if the regexp was unable to match anything, since this
2645         # successfully parses the version number of existing supported
2646         # versions that require the converter (MSVC 2010 and 2012).
2647         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2648         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2649             cc_default="cl"
2650         else
2651             cc_default="c99wrap cl"
2652         fi
2653         ld_default="link"
2654         nm_default="dumpbin -symbols"
2655         ar_default="lib"
2656         target_os_default="win32"
2657         # Use a relative path for TMPDIR. This makes sure all the
2658         # ffconf temp files are written with a relative path, avoiding
2659         # issues with msys/win32 path conversion for MSVC parameters
2660         # such as -Fo<file> or -out:<file>.
2661         TMPDIR=.
2662     ;;
2663     icl)
2664         cc_default="icl"
2665         ld_default="xilink"
2666         nm_default="dumpbin -symbols"
2667         ar_default="xilib"
2668         target_os_default="win32"
2669         TMPDIR=.
2670     ;;
2671     gcov)
2672         add_cflags  -fprofile-arcs -ftest-coverage
2673         add_ldflags -fprofile-arcs -ftest-coverage
2674     ;;
2675     hardened)
2676         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2677         add_ldflags -Wl,-z,relro -Wl,-z,now
2678     ;;
2679     ?*)
2680         die "Unknown toolchain $toolchain"
2681     ;;
2682 esac
2683
2684 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2685 enabled cross_compile || host_cc_default=$cc
2686 set_default host_cc
2687
2688 if ! $pkg_config --version >/dev/null 2>&1; then
2689     warn "$pkg_config not found, library detection may fail."
2690     pkg_config=false
2691 fi
2692
2693 exesuf() {
2694     case $1 in
2695         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2696     esac
2697 }
2698
2699 EXESUF=$(exesuf $target_os)
2700 HOSTEXESUF=$(exesuf $host_os)
2701
2702 # set temporary file name
2703 : ${TMPDIR:=$TEMPDIR}
2704 : ${TMPDIR:=$TMP}
2705 : ${TMPDIR:=/tmp}
2706
2707 if [ -n "$tempprefix" ] ; then
2708     mktemp(){
2709         echo $tempprefix.${HOSTNAME}.${UID}
2710     }
2711 elif ! check_cmd mktemp -u XXXXXX; then
2712     # simple replacement for missing mktemp
2713     # NOT SAFE FOR GENERAL USE
2714     mktemp(){
2715         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2716     }
2717 fi
2718
2719 tmpfile(){
2720     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2721         (set -C; exec > $tmp) 2>/dev/null ||
2722         die "Unable to create temporary file in $TMPDIR."
2723     append TMPFILES $tmp
2724     eval $1=$tmp
2725 }
2726
2727 trap 'rm -f -- $TMPFILES' EXIT
2728
2729 tmpfile TMPASM .asm
2730 tmpfile TMPC   .c
2731 tmpfile TMPCPP .cpp
2732 tmpfile TMPE   $EXESUF
2733 tmpfile TMPH   .h
2734 tmpfile TMPO   .o
2735 tmpfile TMPS   .S
2736 tmpfile TMPSH  .sh
2737 tmpfile TMPV   .ver
2738
2739 unset -f mktemp
2740
2741 chmod +x $TMPE
2742
2743 # make sure we can execute files in $TMPDIR
2744 cat > $TMPSH 2>> $logfile <<EOF
2745 #! /bin/sh
2746 EOF
2747 chmod +x $TMPSH >> $logfile 2>&1
2748 if ! $TMPSH >> $logfile 2>&1; then
2749     cat <<EOF
2750 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2751 variable to another directory and make sure that it is not mounted noexec.
2752 EOF
2753     die "Sanity test failed."
2754 fi
2755
2756 ccc_flags(){
2757     for flag; do
2758         case $flag in
2759             -std=c99)           echo -c99                       ;;
2760             -mcpu=*)            echo -arch ${flag#*=}           ;;
2761             -mieee)             echo -ieee                      ;;
2762             -O*|-fast)          echo $flag                      ;;
2763             -fno-math-errno)    echo -assume nomath_errno       ;;
2764             -g)                 echo -g3                        ;;
2765             -Wall)              echo -msg_enable level2         ;;
2766             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2767             -Wl,*)              echo $flag                      ;;
2768             -f*|-W*)                                            ;;
2769             *)                  echo $flag                      ;;
2770         esac
2771    done
2772 }
2773
2774 cparser_flags(){
2775     for flag; do
2776         case $flag in
2777             -Wno-switch)             echo -Wno-switch-enum ;;
2778             -Wno-format-zero-length) ;;
2779             -Wdisabled-optimization) ;;
2780             -Wno-pointer-sign)       echo -Wno-other ;;
2781             *)                       echo $flag ;;
2782         esac
2783     done
2784 }
2785
2786 msvc_common_flags(){
2787     for flag; do
2788         case $flag in
2789             # In addition to specifying certain flags under the compiler
2790             # specific filters, they must be specified here as well or else the
2791             # generic catch all at the bottom will print the original flag.
2792             -Wall)                ;;
2793             -std=c99)             ;;
2794             # Common flags
2795             -fomit-frame-pointer) ;;
2796             -g)                   echo -Z7 ;;
2797             -fno-math-errno)      ;;
2798             -fno-common)          ;;
2799             -fno-signed-zeros)    ;;
2800             -fPIC)                ;;
2801             -mthumb)              ;;
2802             -march=*)             ;;
2803             -lz)                  echo zlib.lib ;;
2804             -lavifil32)           echo vfw32.lib ;;
2805             -lavicap32)           echo vfw32.lib user32.lib ;;
2806             -l*)                  echo ${flag#-l}.lib ;;
2807             *)                    echo $flag ;;
2808         esac
2809     done
2810 }
2811
2812 msvc_flags(){
2813     msvc_common_flags "$@"
2814     for flag; do
2815         case $flag in
2816             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2817                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2818                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2819                                        -wd4554 \
2820                                        -wd4273 ;;
2821         esac
2822     done
2823 }
2824
2825 icl_flags(){
2826     msvc_common_flags "$@"
2827     for flag; do
2828         case $flag in
2829             # Despite what Intel's documentation says -Wall, which is supported
2830             # on Windows, does enable remarks so disable them here.
2831             -Wall)                echo $flag -Qdiag-disable:remark ;;
2832             -std=c99)             echo -Qstd=c99 ;;
2833         esac
2834     done
2835 }
2836
2837 pgi_flags(){
2838     for flag; do
2839         case $flag in
2840             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2841             -fomit-frame-pointer) echo -Mnoframe ;;
2842             -g)                   echo -gopt ;;
2843             *)                    echo $flag ;;
2844         esac
2845     done
2846 }
2847
2848 suncc_flags(){
2849     for flag; do
2850         case $flag in
2851             -march=*|-mcpu=*)
2852                 case "${flag#*=}" in
2853                     native)                   echo -xtarget=native       ;;
2854                     v9|niagara)               echo -xarch=sparc          ;;
2855                     ultrasparc)               echo -xarch=sparcvis       ;;
2856                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2857                     i586|pentium)             echo -xchip=pentium        ;;
2858                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2859                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2860                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2861                     pentium4*)          echo -xtarget=pentium4           ;;
2862                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2863                     *-sse3)             echo -xarch=sse3                 ;;
2864                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2865                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2866                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2867                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2868                     bdver*)                    echo -xarch=avx           ;;
2869                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2870                     k8|opteron|athlon64|athlon-fx)
2871                                                echo -xarch=sse2a         ;;
2872                     athlon*)                   echo -xarch=pentium_proa  ;;
2873                 esac
2874                 ;;
2875             -std=c99)             echo -xc99              ;;
2876             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2877             -fPIC)                echo -KPIC -xcode=pic32 ;;
2878             -W*,*)                echo $flag              ;;
2879             -f*-*|-W*|-mimpure-text)                      ;;
2880             -shared)              echo -G                 ;;
2881             *)                    echo $flag              ;;
2882         esac
2883     done
2884 }
2885
2886 tms470_flags(){
2887     for flag; do
2888         case $flag in
2889             -march=*|-mcpu=*)
2890                 case "${flag#*=}" in
2891                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2892                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2893                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2894                     armv6*|arm11*)          echo -mv=6   ;;
2895                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2896                                             echo -mv=5e  ;;
2897                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2898                 esac
2899                 ;;
2900             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2901             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2902             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2903             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2904             -msoft-float)   echo --float_support=vfplib       ;;
2905             -O[0-3]|-mf=*)  echo $flag                        ;;
2906             -g)             echo -g -mn                       ;;
2907             -pds=*)         echo $flag                        ;;
2908             -D*|-I*)        echo $flag                        ;;
2909             --gcc|--abi=*)  echo $flag                        ;;
2910             -me)            echo $flag                        ;;
2911         esac
2912     done
2913 }
2914
2915 probe_cc(){
2916     pfx=$1
2917     _cc=$2
2918
2919     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2920     unset _ld_o _ldflags _ld_lib _ld_path
2921     unset _depflags _DEPCMD _DEPFLAGS
2922     _flags_filter=echo
2923
2924     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
2925         true # no-op to avoid reading stdin in following checks
2926     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2927         _type=llvm_gcc
2928         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2929         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2930         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2931         _cflags_speed='-O3'
2932         _cflags_size='-Os'
2933     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2934         _type=gcc
2935         gcc_version=$($_cc --version | head -n1)
2936         gcc_basever=$($_cc -dumpversion)
2937         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2938         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2939         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2940         if ! $_cc -dumpversion | grep -q '^2\.'; then
2941             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2942         fi
2943         _cflags_speed='-O3'
2944         _cflags_size='-Os'
2945     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2946         _type=icc
2947         _ident=$($_cc --version | head -n1)
2948         _depflags='-MMD'
2949         _cflags_speed='-O3'
2950         _cflags_size='-Os'
2951         _cflags_noopt='-O1'
2952     elif $_cc -v 2>&1 | grep -q xlc; then
2953         _type=xlc
2954         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2955         _cflags_speed='-O5'
2956         _cflags_size='-O5 -qcompact'
2957     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2958         _type=ccc
2959         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2960         _DEPFLAGS='-M'
2961         _cflags_speed='-fast'
2962         _cflags_size='-O1'
2963         _flags_filter=ccc_flags
2964     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2965         test -d "$sysroot" || die "No valid sysroot specified."
2966         _type=armcc
2967         _ident=$($_cc --vsn | head -n1)
2968         armcc_conf="$PWD/armcc.conf"
2969         $_cc --arm_linux_configure                 \
2970              --arm_linux_config_file="$armcc_conf" \
2971              --configure_sysroot="$sysroot"        \
2972              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2973              die "Error creating armcc configuration file."
2974         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2975         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2976         as_default="${cross_prefix}gcc"
2977         _depflags='-MMD'
2978         _cflags_speed='-O3'
2979         _cflags_size='-Os'
2980     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2981         _type=tms470
2982         _ident=$($_cc -version | head -n1 | tr -s ' ')
2983         _flags='--gcc --abi=eabi -me'
2984         _cc_e='-ppl -fe=$@'
2985         _cc_o='-fe=$@'
2986         _depflags='-ppa -ppd=$(@:.o=.d)'
2987         _cflags_speed='-O3 -mf=5'
2988         _cflags_size='-O3 -mf=2'
2989         _flags_filter=tms470_flags
2990     elif $_cc -v 2>&1 | grep -q clang; then
2991         _type=clang
2992         _ident=$($_cc --version | head -n1)
2993         _depflags='-MMD'
2994         _cflags_speed='-O3'
2995         _cflags_size='-Os'
2996     elif $_cc -V 2>&1 | grep -q Sun; then
2997         _type=suncc
2998         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2999         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3000         _DEPFLAGS='-xM1 -xc99'
3001         _ldflags='-std=c99'
3002         _cflags_speed='-O5'
3003         _cflags_size='-O5 -xspace'
3004         _flags_filter=suncc_flags
3005     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3006         _type=pathscale
3007         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3008         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3009         _cflags_speed='-O2'
3010         _cflags_size='-Os'
3011         _flags_filter='filter_out -Wdisabled-optimization'
3012     elif $_cc -v 2>&1 | grep -q Open64; then
3013         _type=open64
3014         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3015         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3016         _cflags_speed='-O2'
3017         _cflags_size='-Os'
3018         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3019     elif $_cc -V 2>&1 | grep -q Portland; then
3020         _type=pgi
3021         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3022         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3023         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3024         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3025         _cflags_noopt="-O"
3026         _flags_filter=pgi_flags
3027     elif $_cc 2>&1 | grep -q Microsoft; then
3028         _type=msvc
3029         _ident=$($cc 2>&1 | head -n1)
3030         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3031         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3032         _cflags_speed="-O2"
3033         _cflags_size="-O1"
3034         if $_cc 2>&1 | grep -q Linker; then
3035             _ld_o='-out:$@'
3036         else
3037             _ld_o='-Fe$@'
3038         fi
3039         _cc_o='-Fo$@'
3040         _cc_e='-P -Fi$@'
3041         _flags_filter=msvc_flags
3042         _ld_lib='lib%.a'
3043         _ld_path='-libpath:'
3044         _flags='-nologo'
3045         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3046         if [ $pfx = hostcc ]; then
3047             append _cflags -Dsnprintf=_snprintf
3048         fi
3049         disable stripping
3050     elif $_cc 2>&1 | grep -q Intel; then
3051         _type=icl
3052         _ident=$($cc 2>&1 | head -n1)
3053         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3054         # Not only is O3 broken on 13.x+ but it is slower on all previous
3055         # versions (tested) as well.
3056         _cflags_speed="-O2"
3057         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3058         if $_cc 2>&1 | grep -q Linker; then
3059             _ld_o='-out:$@'
3060         else
3061             _ld_o='-Fe$@'
3062         fi
3063         _cc_o='-Fo$@'
3064         _cc_e='-P'
3065         _flags_filter=icl_flags
3066         _ld_lib='lib%.a'
3067         _ld_path='-libpath:'
3068         # -Qdiag-error to make icl error when seeing certain unknown arguments
3069         _flags='-nologo -Qdiag-error:4044,10157'
3070         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3071         # with MSVC which enables it by default.
3072         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3073         if [ $pfx = hostcc ]; then
3074             append _cflags -Dsnprintf=_snprintf
3075         fi
3076     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3077         _type=cparser
3078         _ident=$($_cc --version | head -n1)
3079         _depflags='-MMD'
3080         _cflags_speed='-O4'
3081         _cflags_size='-O2'
3082         _flags_filter=cparser_flags
3083     fi
3084
3085     eval ${pfx}_type=\$_type
3086     eval ${pfx}_ident=\$_ident
3087 }
3088
3089 set_ccvars(){
3090     eval ${1}_C=\${_cc_c-\${${1}_C}}
3091     eval ${1}_E=\${_cc_e-\${${1}_E}}
3092     eval ${1}_O=\${_cc_o-\${${1}_O}}
3093
3094     if [ -n "$_depflags" ]; then
3095         eval ${1}_DEPFLAGS=\$_depflags
3096     else
3097         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3098         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3099         eval DEP${1}FLAGS=\$_flags
3100     fi
3101 }
3102
3103 probe_cc cc "$cc"
3104 cflags_filter=$_flags_filter
3105 cflags_speed=$_cflags_speed
3106 cflags_size=$_cflags_size
3107 cflags_noopt=$_cflags_noopt
3108 add_cflags $_flags $_cflags
3109 cc_ldflags=$_ldflags
3110 set_ccvars CC
3111
3112 probe_cc hostcc "$host_cc"
3113 host_cflags_filter=$_flags_filter
3114 add_host_cflags  $_flags $_cflags
3115 set_ccvars HOSTCC
3116
3117 test -n "$cc_type" && enable $cc_type ||
3118     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3119
3120 : ${as_default:=$cc}
3121 : ${dep_cc_default:=$cc}
3122 : ${ld_default:=$cc}
3123 : ${host_ld_default:=$host_cc}
3124 set_default ar as dep_cc ld host_ld
3125
3126 probe_cc as "$as"
3127 asflags_filter=$_flags_filter
3128 add_asflags $_flags $_cflags
3129 set_ccvars AS
3130
3131 probe_cc ld "$ld"
3132 ldflags_filter=$_flags_filter
3133 add_ldflags $_flags $_ldflags
3134 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3135 LD_O=${_ld_o-$LD_O}
3136 LD_LIB=${_ld_lib-$LD_LIB}
3137 LD_PATH=${_ld_path-$LD_PATH}
3138
3139 probe_cc hostld "$host_ld"
3140 host_ldflags_filter=$_flags_filter
3141 add_host_ldflags $_flags $_ldflags
3142 HOSTLD_O=${_ld_o-$HOSTLD_O}
3143
3144 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3145     probe_cc depcc "$dep_cc"
3146     CCDEP=${_DEPCMD:-$DEPCMD}
3147     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3148     DEPCCFLAGS=$_flags
3149 fi
3150
3151 if $ar 2>&1 | grep -q Microsoft; then
3152     arflags="-nologo"
3153     ar_o='-out:$@'
3154 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3155     arflags="rq"
3156     ar_o='$@'
3157 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3158     arflags='-Xany -r -c'
3159     ar_o='$@'
3160 else
3161     arflags="rc"
3162     ar_o='$@'
3163 fi
3164
3165 add_cflags $extra_cflags
3166 add_cxxflags $extra_cxxflags
3167 add_asflags $extra_cflags
3168
3169 if test -n "$sysroot"; then
3170     case "$cc_type" in
3171         gcc|llvm_gcc|clang)
3172             add_cppflags --sysroot="$sysroot"
3173             add_ldflags --sysroot="$sysroot"
3174         ;;
3175         tms470)
3176             add_cppflags -I"$sysinclude"
3177             add_ldflags  --sysroot="$sysroot"
3178         ;;
3179     esac
3180 fi
3181
3182 if test "$cpu" = host; then
3183     enabled cross_compile &&
3184         die "--cpu=host makes no sense when cross-compiling."
3185
3186     case "$cc_type" in
3187         gcc|llvm_gcc)
3188             check_native(){
3189                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3190                 sed -n "/cc1.*$1=/{
3191                             s/.*$1=\\([^ ]*\\).*/\\1/
3192                             p
3193                             q
3194                         }" $TMPE
3195             }
3196             cpu=$(check_native -march || check_native -mcpu)
3197         ;;
3198     esac
3199
3200     test "${cpu:-host}" = host &&
3201         die "--cpu=host not supported with compiler $cc"
3202 fi
3203
3204 # Deal with common $arch aliases
3205 case "$arch" in
3206     aarch64|arm64)
3207         arch="aarch64"
3208     ;;
3209     arm*|iPad*|iPhone*)
3210         arch="arm"
3211     ;;
3212     mips*|IP*)
3213         arch="mips"
3214     ;;
3215     parisc*|hppa*)
3216         arch="parisc"
3217     ;;
3218     "Power Macintosh"|ppc*|powerpc*)
3219         arch="ppc"
3220     ;;
3221     s390|s390x)
3222         arch="s390"
3223     ;;
3224     sh4|sh)
3225         arch="sh4"
3226     ;;
3227     sun4u|sparc*)
3228         arch="sparc"
3229     ;;
3230     tilegx|tile-gx)
3231         arch="tilegx"
3232     ;;
3233     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3234         arch="x86"
3235     ;;
3236 esac
3237
3238 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3239 enable $arch
3240
3241 # Add processor-specific flags
3242 if enabled aarch64; then
3243
3244     case $cpu in
3245         armv*)
3246             cpuflags="-march=$cpu"
3247         ;;
3248         *)
3249             cpuflags="-mcpu=$cpu"
3250         ;;
3251     esac
3252
3253 elif enabled alpha; then
3254
3255     cpuflags="-mcpu=$cpu"
3256
3257 elif enabled arm; then
3258
3259     check_arm_arch() {
3260         check_cpp_condition stddef.h \
3261             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3262             $cpuflags
3263     }
3264
3265     probe_arm_arch() {
3266         if   check_arm_arch 4;        then echo armv4;
3267         elif check_arm_arch 4T;       then echo armv4t;
3268         elif check_arm_arch 5;        then echo armv5;
3269         elif check_arm_arch 5E;       then echo armv5e;
3270         elif check_arm_arch 5T;       then echo armv5t;
3271         elif check_arm_arch 5TE;      then echo armv5te;
3272         elif check_arm_arch 5TEJ;     then echo armv5te;
3273         elif check_arm_arch 6;        then echo armv6;
3274         elif check_arm_arch 6J;       then echo armv6j;
3275         elif check_arm_arch 6K;       then echo armv6k;
3276         elif check_arm_arch 6Z;       then echo armv6z;
3277         elif check_arm_arch 6ZK;      then echo armv6zk;
3278         elif check_arm_arch 6T2;      then echo armv6t2;
3279         elif check_arm_arch 7;        then echo armv7;
3280         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3281         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3282         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3283         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3284         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3285         fi
3286     }
3287
3288     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3289
3290     case $cpu in
3291         armv*)
3292             cpuflags="-march=$cpu"
3293             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3294         ;;
3295         *)
3296             cpuflags="-mcpu=$cpu"
3297             case $cpu in
3298                 cortex-a*)                               subarch=armv7a  ;;
3299                 cortex-r*)                               subarch=armv7r  ;;
3300                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3301                 arm11*)                                  subarch=armv6   ;;
3302                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3303                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3304                 *)                             subarch=$(probe_arm_arch) ;;
3305             esac
3306         ;;
3307     esac
3308
3309     case "$subarch" in
3310         armv5t*)    enable fast_clz                ;;
3311         armv[6-8]*) enable fast_clz fast_unaligned ;;
3312     esac
3313
3314 elif enabled avr32; then
3315
3316     case $cpu in
3317         ap7[02]0[0-2])
3318             subarch="avr32_ap"
3319             cpuflags="-mpart=$cpu"
3320         ;;
3321         ap)
3322             subarch="avr32_ap"
3323             cpuflags="-march=$cpu"
3324         ;;
3325         uc3[ab]*)
3326             subarch="avr32_uc"
3327             cpuflags="-mcpu=$cpu"
3328         ;;
3329         uc)
3330             subarch="avr32_uc"
3331             cpuflags="-march=$cpu"
3332         ;;
3333     esac
3334
3335 elif enabled bfin; then
3336
3337     cpuflags="-mcpu=$cpu"
3338
3339 elif enabled mips; then
3340
3341     cpuflags="-march=$cpu"
3342
3343     case $cpu in
3344         24kc)
3345             disable mipsfpu
3346             disable mipsdspr1
3347             disable mipsdspr2
3348         ;;
3349         24kf*)
3350             disable mipsdspr1
3351             disable mipsdspr2
3352         ;;
3353         24kec|34kc|1004kc)
3354             disable mipsfpu
3355             disable mipsdspr2
3356         ;;
3357         24kef*|34kf*|1004kf*)
3358             disable mipsdspr2
3359         ;;
3360         74kc)
3361             disable mipsfpu
3362         ;;
3363     esac
3364
3365 elif enabled ppc; then
3366
3367     case $(tolower $cpu) in
3368         601|ppc601|powerpc601)
3369             cpuflags="-mcpu=601"
3370             disable altivec
3371         ;;
3372         603*|ppc603*|powerpc603*)
3373             cpuflags="-mcpu=603"
3374             disable altivec
3375         ;;
3376         604*|ppc604*|powerpc604*)
3377             cpuflags="-mcpu=604"
3378             disable altivec
3379         ;;
3380         g3|75*|ppc75*|powerpc75*)
3381             cpuflags="-mcpu=750"
3382             disable altivec
3383         ;;
3384         g4|745*|ppc745*|powerpc745*)
3385             cpuflags="-mcpu=7450"
3386         ;;
3387         74*|ppc74*|powerpc74*)
3388             cpuflags="-mcpu=7400"
3389         ;;
3390         g5|970|ppc970|powerpc970)
3391             cpuflags="-mcpu=970"
3392         ;;
3393         power[3-7]*)
3394             cpuflags="-mcpu=$cpu"
3395         ;;
3396         cell)
3397             cpuflags="-mcpu=cell"
3398             enable ldbrx
3399         ;;
3400         e500mc)
3401             cpuflags="-mcpu=e500mc"
3402             disable altivec
3403         ;;
3404         e500v2)
3405             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3406             disable altivec
3407         ;;
3408         e500)
3409             cpuflags="-mcpu=8540 -mhard-float"
3410             disable altivec
3411         ;;
3412     esac
3413
3414 elif enabled sparc; then
3415
3416     case $cpu in
3417         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3418             cpuflags="-mcpu=$cpu"
3419             disable vis
3420         ;;
3421         ultrasparc*|niagara[234])
3422             cpuflags="-mcpu=$cpu"
3423         ;;
3424     esac
3425
3426 elif enabled x86; then
3427
3428     case $cpu in
3429         i[345]86|pentium)
3430             cpuflags="-march=$cpu"
3431             disable mmx
3432         ;;
3433         # targets that do NOT support nopl and conditional mov (cmov)
3434         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3435             cpuflags="-march=$cpu"
3436             disable i686
3437         ;;
3438         # targets that do support nopl and conditional mov (cmov)
3439         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3440             cpuflags="-march=$cpu"
3441             enable i686
3442             enable fast_cmov
3443         ;;
3444         # targets that do support conditional mov but on which it's slow
3445         pentium4|pentium4m|prescott|nocona)
3446             cpuflags="-march=$cpu"
3447             enable i686
3448             disable fast_cmov
3449         ;;
3450     esac
3451
3452 fi
3453
3454 if [ "$cpu" != generic ]; then
3455     add_cflags  $cpuflags
3456     add_asflags $cpuflags
3457 fi
3458
3459 # compiler sanity check
3460 check_exec <<EOF
3461 int main(void){ return 0; }
3462 EOF
3463 if test "$?" != 0; then
3464     echo "$cc is unable to create an executable file."
3465     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3466         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3467         echo "Only do this if you know what cross compiling means."
3468     fi
3469     die "C compiler test failed."
3470 fi
3471
3472 add_cppflags -D_ISOC99_SOURCE
3473 add_cxxflags -D__STDC_CONSTANT_MACROS
3474 check_cflags -std=c99
3475 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3476 #include <stdlib.h>
3477 EOF
3478 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3479 #include <stdlib.h>
3480 EOF
3481
3482 check_host_cflags -std=c99
3483 check_host_cflags -Wall
3484
3485 check_64bit(){
3486     arch32=$1
3487     arch64=$2
3488     expr=$3
3489     check_code cc "" "int test[2*($expr) - 1]" &&
3490         subarch=$arch64 || subarch=$arch32
3491 }
3492
3493 case "$arch" in
3494     aarch64|alpha|ia64)
3495         spic=$shared
3496     ;;
3497     mips)
3498         check_64bit mips mips64 '_MIPS_SIM > 1'
3499         spic=$shared
3500     ;;
3501     parisc)
3502         check_64bit parisc parisc64 'sizeof(void *) > 4'
3503         spic=$shared
3504     ;;
3505     ppc)
3506         check_64bit ppc ppc64 'sizeof(void *) > 4'
3507         spic=$shared
3508     ;;
3509     sparc)
3510         check_64bit sparc sparc64 'sizeof(void *) > 4'
3511         spic=$shared
3512     ;;
3513     x86)
3514         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3515         if test "$subarch" = "x86_64"; then
3516             spic=$shared
3517         fi
3518     ;;
3519     ppc)
3520         check_cc <<EOF && subarch="ppc64"
3521         int test[(int)sizeof(char*) - 7];
3522 EOF
3523     ;;
3524 esac
3525
3526 enable $subarch
3527 enabled spic && enable_weak pic
3528
3529 # OS specific
3530 case $target_os in
3531     aix)
3532         SHFLAGS=-shared
3533         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3534         enabled shared && add_ldflags -Wl,-brtl
3535         ;;
3536     haiku)
3537         prefix_default="/boot/common"
3538         network_extralibs="-lnetwork"
3539         host_libs=
3540         ;;
3541     sunos)
3542         SHFLAGS='-shared -Wl,-h,$$(@F)'
3543         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3544         network_extralibs="-lsocket -lnsl"
3545         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3546         # When using suncc to build, the Solaris linker will mark
3547         # an executable with each instruction set encountered by
3548         # the Solaris assembler.  As our libraries contain their own
3549         # guards for processor-specific code, instead suppress
3550         # generation of the HWCAPS ELF section on Solaris x86 only.
3551         enabled_all suncc x86 &&
3552             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3553             add_ldflags -Wl,-M,mapfile
3554         nm_default='nm -P -g'
3555         ;;
3556     netbsd)
3557         disable symver
3558         oss_indev_extralibs="-lossaudio"
3559         oss_outdev_extralibs="-lossaudio"
3560         enabled gcc || check_ldflags -Wl,-zmuldefs
3561         ;;
3562     openbsd|bitrig)
3563         disable symver
3564         SHFLAGS='-shared'
3565         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3566         SLIB_INSTALL_LINKS=
3567         oss_indev_extralibs="-lossaudio"
3568         oss_outdev_extralibs="-lossaudio"
3569         ;;
3570     dragonfly)
3571         disable symver
3572         ;;
3573     freebsd)
3574         ;;
3575     bsd/os)
3576         add_extralibs -lpoll -lgnugetopt
3577         strip="strip -d"
3578         ;;
3579     darwin)
3580         gas="gas-preprocessor.pl $cc"
3581         enabled ppc && add_asflags -force_cpusubtype_ALL
3582         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3583         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3584         strip="${strip} -x"
3585         add_ldflags -Wl,-dynamic,-search_paths_first
3586         SLIBSUF=".dylib"
3587         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3588         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3589         objformat="macho"
3590         enabled x86_64 && objformat="macho64"
3591         enabled_any pic shared ||
3592             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3593         ;;
3594     mingw32*)
3595         if test $target_os = "mingw32ce"; then
3596             disable network
3597         else
3598             target_os=mingw32
3599         fi
3600         LIBTARGET=i386
3601         if enabled x86_64; then
3602             LIBTARGET="i386:x86-64"
3603         elif enabled arm; then
3604             LIBTARGET=arm-wince
3605         fi
3606         check_ldflags -Wl,--nxcompat
3607         check_ldflags -Wl,--dynamicbase
3608         shlibdir_default="$bindir_default"
3609         SLIBPREF=""
3610         SLIBSUF=".dll"
3611         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3612         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3613         dlltool="${cross_prefix}dlltool"
3614         if check_cmd lib.exe -list; then
3615             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3616             if enabled x86_64; then
3617                 LIBTARGET=x64
3618             fi
3619         elif check_cmd $dlltool --version; then
3620             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3621         fi
3622         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3623         SLIB_INSTALL_LINKS=
3624         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3625         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3626         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3627         objformat="win32"
3628         ranlib=:
3629         enable dos_paths
3630         ;;
3631     win32|win64)
3632         disable symver
3633         if enabled shared; then
3634             # Link to the import library instead of the normal static library
3635             # for shared libs.
3636             LD_LIB='%.lib'
3637             # Cannot build both shared and static libs with MSVC or icl.
3638             disable static
3639         fi
3640         shlibdir_default="$bindir_default"
3641         SLIBPREF=""
3642         SLIBSUF=".dll"
3643         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3644         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3645         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3646         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3647         SLIB_INSTALL_LINKS=
3648         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3649         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3650         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3651         objformat="win32"
3652         ranlib=:
3653         enable dos_paths
3654         ;;
3655     cygwin*)
3656         target_os=cygwin
3657         shlibdir_default="$bindir_default"
3658         SLIBPREF="cyg"
3659         SLIBSUF=".dll"
3660         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3661         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3662         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3663         SLIB_INSTALL_LINKS=
3664         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3665         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3666         objformat="win32"
3667         enable dos_paths
3668         ;;
3669     *-dos|freedos|opendos)
3670         network_extralibs="-lsocket"
3671         objformat="coff"
3672         enable dos_paths
3673         add_cppflags -U__STRICT_ANSI__
3674         ;;
3675     linux)
3676         enable dv1394
3677         ;;
3678     irix*)
3679         target_os=irix
3680         ranlib="echo ignoring ranlib"
3681         ;;
3682     os/2*)
3683         strip="lxlite -CS"
3684         ln_s="cp -f"
3685         objformat="aout"
3686         add_cppflags -D_GNU_SOURCE
3687         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3688         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3689         LIBSUF="_s.a"
3690         SLIBPREF=""
3691         SLIBSUF=".dll"
3692         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3693         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3694         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3695             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3696             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3697             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3698             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3699             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3700         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3701             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3702         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3703         enable dos_paths
3704         enable_weak os2threads
3705         ;;
3706     gnu/kfreebsd)
3707         add_cppflags -D_BSD_SOURCE
3708         ;;
3709     gnu)
3710         ;;
3711     qnx)
3712         add_cppflags -D_QNX_SOURCE
3713         network_extralibs="-lsocket"
3714         ;;
3715     symbian)
3716         SLIBSUF=".dll"
3717         enable dos_paths
3718         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3719         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3720         add_ldflags -Wl,--target1-abs,--no-undefined \
3721                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3722                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3723         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3724                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3725                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3726         ;;
3727     osf1)
3728         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3729         ;;
3730     minix)
3731         ;;
3732     plan9)
3733         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3734                      -D_REENTRANT_SOURCE        \
3735                      -D_RESEARCH_SOURCE         \
3736                      -DFD_SETSIZE=96            \
3737                      -DHAVE_SOCK_OPTS
3738         add_compat strtod.o strtod=avpriv_strtod
3739         network_extralibs='-lbsd'
3740         exeobjs=compat/plan9/main.o
3741         disable ffserver
3742         cp_f='cp'
3743         ;;
3744     none)
3745         ;;
3746     *)
3747         die "Unknown OS '$target_os'."
3748         ;;
3749 esac
3750
3751 # determine libc flavour
3752
3753 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3754 if check_cpp_condition features.h "defined __UCLIBC__"; then
3755     libc_type=uclibc
3756     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3757 elif check_cpp_condition features.h "defined __GLIBC__"; then
3758     libc_type=glibc
3759     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3760 # MinGW headers can be installed on Cygwin, so check for newlib first.
3761 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3762     libc_type=newlib
3763     add_cppflags -U__STRICT_ANSI__
3764 elif check_header _mingw.h; then
3765     libc_type=mingw
3766     check_cpp_condition _mingw.h \
3767         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3768             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3769         die "ERROR: MinGW runtime version must be >= 3.15."
3770     add_cppflags -U__STRICT_ANSI__
3771     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3772             __MINGW64_VERSION_MAJOR < 3"; then
3773         add_compat msvcrt/snprintf.o
3774         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3775     else
3776         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3777     fi
3778 elif check_func_headers stdlib.h _get_doserrno; then
3779     libc_type=msvcrt
3780     add_compat strtod.o strtod=avpriv_strtod
3781     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3782                                  _snprintf=avpriv_snprintf  \
3783                                  vsnprintf=avpriv_vsnprintf
3784     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3785     # 0x601 by default unless something else is set by the user.
3786     # This can easily lead to us detecting functions only present
3787     # in such new versions and producing binaries requiring windows 7.0.
3788     # Therefore explicitly set the default to XP unless the user has
3789     # set something else on the command line.
3790     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3791 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3792     libc_type=klibc
3793 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3794     libc_type=bionic
3795     add_compat strtod.o strtod=avpriv_strtod
3796 fi
3797
3798 test -n "$libc_type" && enable $libc_type
3799
3800 # hacks for compiler/libc/os combinations
3801
3802 if enabled_all tms470 glibc; then
3803     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3804     add_cppflags -D__USER_LABEL_PREFIX__=
3805     add_cppflags -D__builtin_memset=memset
3806     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3807     add_cflags   -pds=48    # incompatible redefinition of macro
3808 fi
3809
3810 if enabled_all ccc glibc; then
3811     add_ldflags -Wl,-z,now  # calls to libots crash without this
3812 fi
3813
3814 esc(){
3815     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3816 }
3817
3818 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3819
3820 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3821
3822 set_default $PATHS_LIST
3823 set_default nm
3824
3825 # we need to build at least one lib type
3826 if ! enabled_any static shared; then
3827     cat <<EOF
3828 At least one library type must be built.
3829 Specify --enable-static to build the static libraries or --enable-shared to
3830 build the shared libraries as well. To only build the shared libraries specify
3831 --disable-static in addition to --enable-shared.
3832 EOF
3833     exit 1;
3834 fi
3835
3836 # backward compatibility layer for incompatible_libav/fork_abi
3837 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3838 enabled incompatible_libav_abi && enable incompatible_fork_abi
3839
3840 die_license_disabled() {
3841     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3842 }
3843
3844 die_license_disabled_gpl() {
3845     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3846 }
3847
3848 die_license_disabled gpl frei0r
3849 die_license_disabled gpl libcdio
3850 die_license_disabled gpl libutvideo
3851 die_license_disabled gpl libvidstab
3852 die_license_disabled gpl libx264
3853 die_license_disabled gpl libxavs
3854 die_license_disabled gpl libxvid
3855 die_license_disabled gpl libzvbi
3856 die_license_disabled gpl x11grab
3857
3858 die_license_disabled nonfree libaacplus
3859 die_license_disabled nonfree libfaac
3860 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3861 enabled gpl && die_license_disabled_gpl nonfree openssl
3862
3863 die_license_disabled version3 libopencore_amrnb
3864 die_license_disabled version3 libopencore_amrwb
3865 die_license_disabled version3 libvo_aacenc
3866 die_license_disabled version3 libvo_amrwbenc
3867
3868 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3869
3870 disabled optimizations || check_cflags -fomit-frame-pointer
3871
3872 enable_weak_pic() {
3873     disabled pic && return
3874     enable pic
3875     add_cppflags -DPIC
3876     case "$target_os" in
3877     mingw*|cygwin*)
3878         ;;
3879     *)
3880         add_cflags -fPIC
3881         ;;
3882     esac
3883     add_asflags  -fPIC
3884 }
3885
3886 enabled pic && enable_weak_pic
3887
3888 check_cc <<EOF || die "Symbol mangling check failed."
3889 int ff_extern;
3890 EOF
3891 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3892 extern_prefix=${sym%%ff_extern*}
3893
3894 check_cc <<EOF && enable_weak inline_asm
3895 void foo(void) { __asm__ volatile ("" ::); }
3896 EOF
3897
3898 _restrict=
3899 for restrict_keyword in restrict __restrict__ __restrict; do
3900     check_cc <<EOF && _restrict=$restrict_keyword && break
3901 void foo(char * $restrict_keyword p);
3902 EOF
3903 done
3904
3905 check_cc <<EOF && enable pragma_deprecated
3906 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3907 EOF
3908
3909 check_cc <<EOF && enable attribute_packed
3910 struct { int x; } __attribute__((packed)) x;
3911 EOF
3912
3913 check_cc <<EOF && enable attribute_may_alias
3914 union { int x; } __attribute__((may_alias)) x;
3915 EOF
3916
3917 check_cc <<EOF || die "endian test failed"
3918 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3919 EOF
3920 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3921
3922 check_inline_asm inline_asm_labels '"1:\n"'
3923
3924 if enabled alpha; then
3925
3926     check_cflags -mieee
3927
3928 elif enabled arm; then
3929
3930     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3931 float func(float a, float b){ return a+b; }
3932 EOF
3933
3934     enabled thumb && check_cflags -mthumb || check_cflags -marm
3935     nogas=die
3936
3937     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3938         enable vfp_args
3939     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3940         case "${cross_prefix:-$cc}" in
3941             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3942             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3943 __asm__ (".eabi_attribute 28, 1");
3944 int main(void) { return 0; }
3945 EOF
3946         esac
3947         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3948     fi
3949
3950     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3951     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3952     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3953     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3954     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3955     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3956
3957     [ $target_os = linux ] ||
3958         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3959             $ARCH_EXT_LIST_ARM
3960
3961     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3962     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3963
3964     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3965
3966 elif enabled mips; then
3967
3968     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3969     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3970      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3971     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3972      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3973     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3974      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3975     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3976      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3977
3978 elif enabled parisc; then
3979
3980     if enabled gcc; then
3981         case $($cc -dumpversion) in
3982             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3983         esac
3984     fi
3985
3986 elif enabled ppc; then
3987
3988     enable local_aligned_8 local_aligned_16
3989
3990     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3991     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3992     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3993     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3994
3995     # AltiVec flags: The FSF version of GCC differs from the Apple version
3996     if enabled altivec; then
3997         if ! enabled_any pic ppc64; then
3998             nogas=warn
3999         fi
4000         check_cflags -maltivec -mabi=altivec &&
4001         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4002         check_cflags -faltivec
4003
4004         # check if our compiler supports Motorola AltiVec C API
4005         check_cc <<EOF || disable altivec
4006 $inc_altivec_h
4007 int main(void) {
4008     vector signed int v1 = (vector signed int) { 0 };
4009     vector signed int v2 = (vector signed int) { 1 };
4010     v1 = vec_add(v1, v2);
4011     return 0;
4012 }
4013 EOF
4014
4015         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4016     fi
4017
4018 elif enabled sparc; then
4019
4020     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
4021
4022 elif enabled x86; then
4023
4024     check_builtin rdtsc    intrin.h   "__rdtsc()"
4025     check_builtin mm_empty mmintrin.h "_mm_empty()"
4026
4027     enable local_aligned_8 local_aligned_16
4028
4029     # check whether EBP is available on x86
4030     # As 'i' is stored on the stack, this program will crash
4031     # if the base pointer is used to access it because the
4032     # base pointer is cleared in the inline assembly code.
4033     check_exec_crash <<EOF && enable ebp_available
4034 volatile int i=0;
4035 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4036 return i;
4037 EOF
4038
4039     # check whether EBX is available on x86
4040     check_inline_asm ebx_available '""::"b"(0)' &&
4041         check_inline_asm ebx_available '"":::"%ebx"'
4042
4043     # check whether xmm clobbers are supported
4044     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4045
4046     # check whether binutils is new enough to compile SSSE3/MMXEXT
4047     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4048     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4049
4050     if ! disabled_any asm mmx yasm; then
4051         if check_cmd $yasmexe --version; then
4052             enabled x86_64 && yasm_extra="-m amd64"
4053             yasm_debug="-g dwarf2"
4054         elif check_cmd nasm -v; then
4055             yasmexe=nasm
4056             yasm_debug="-g -F dwarf"
4057             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4058         fi
4059
4060         YASMFLAGS="-f $objformat $yasm_extra"
4061         enabled pic               && append YASMFLAGS "-DPIC"
4062         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4063         case "$objformat" in
4064             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4065         esac
4066
4067         check_yasm "movbe ecx, [5]" && enable yasm ||
4068             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4069         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4070         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4071         check_yasm "CPU amdnop" && enable cpunop
4072     fi
4073
4074     case "$cpu" in
4075         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4076             disable fast_clz
4077         ;;
4078     esac
4079
4080 fi
4081
4082 if enabled asm; then
4083     as=${gas:=$as}
4084     check_as <<EOF && enable gnu_as || \
4085         $nogas "GNU assembler not found, install gas-preprocessor"
4086 .macro m n
4087 \n: .int 0
4088 .endm
4089 m x
4090 EOF
4091 fi
4092
4093 check_ldflags -Wl,--as-needed
4094
4095 if check_func dlopen; then
4096     ldl=
4097 elif check_func dlopen -ldl; then
4098     ldl=-ldl
4099 fi
4100
4101 if ! disabled network; then
4102     check_type "sys/types.h sys/socket.h" socklen_t
4103     check_type netdb.h "struct addrinfo"
4104     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4105     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4106     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4107     check_type netinet/in.h "struct sockaddr_in6"
4108     check_type poll.h "struct pollfd"
4109     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4110     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4111     check_type netinet/sctp.h "struct sctp_event_subscribe"
4112     check_func getaddrinfo $network_extralibs
4113     check_func getservbyport $network_extralibs
4114     # Prefer arpa/inet.h over winsock2
4115     if check_header arpa/inet.h ; then
4116         check_func closesocket
4117     elif check_header winsock2.h ; then
4118         check_func_headers winsock2.h closesocket -lws2 &&
4119             network_extralibs="-lws2" ||
4120         { check_func_headers winsock2.h closesocket -lws2_32 &&
4121             network_extralibs="-lws2_32"; }
4122         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4123         check_type ws2tcpip.h socklen_t
4124         check_type ws2tcpip.h "struct addrinfo"
4125         check_type ws2tcpip.h "struct group_source_req"
4126         check_type ws2tcpip.h "struct ip_mreq_source"
4127         check_type ws2tcpip.h "struct ipv6_mreq"
4128         check_type winsock2.h "struct pollfd"
4129         check_type ws2tcpip.h "struct sockaddr_in6"
4130         check_type ws2tcpip.h "struct sockaddr_storage"
4131         check_struct winsock2.h "struct sockaddr" sa_len
4132     else
4133         disable network
4134     fi
4135 fi
4136
4137 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4138 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4139
4140 check_func  access
4141 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4142 check_func  fcntl
4143 check_func  fork
4144 check_func_headers stdlib.h getenv
4145 check_func  gethrtime
4146 check_func  getopt
4147 check_func  getrusage
4148 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4149 check_func  gettimeofday
4150 check_func  inet_aton $network_extralibs
4151 check_func  isatty
4152 check_func  localtime_r
4153 check_func  ${malloc_prefix}memalign            && enable memalign
4154 check_func  mkstemp
4155 check_func  mmap
4156 check_func  mprotect
4157 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4158 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4159 check_func  setrlimit
4160 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4161 check_func  strerror_r
4162 check_func  sched_getaffinity
4163 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4164 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4165 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4166 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4167 check_builtin sarestart signal.h "SA_RESTART"
4168 check_func  sysconf
4169 check_func  sysctl
4170 check_func  usleep
4171 check_func_headers conio.h kbhit
4172 check_func_headers windows.h PeekNamedPipe
4173 check_func_headers io.h setmode
4174 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4175 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4176 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4177 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4178 check_func_headers windows.h GetProcessAffinityMask
4179 check_func_headers windows.h GetProcessTimes
4180 check_func_headers windows.h GetSystemTimeAsFileTime
4181 check_func_headers windows.h MapViewOfFile
4182 check_func_headers windows.h SetConsoleTextAttribute
4183 check_func_headers windows.h Sleep
4184 check_func_headers windows.h VirtualAlloc
4185 check_func_headers glob.h glob
4186 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4187
4188 check_header cl/cl.h
4189 check_header direct.h
4190 check_header dlfcn.h
4191 check_header dxva.h
4192 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4193 check_header io.h
4194 check_header libcrystalhd/libcrystalhd_if.h
4195 check_header malloc.h
4196 check_header poll.h
4197 check_header sys/mman.h
4198 check_header sys/param.h
4199 check_header sys/resource.h
4200 check_header sys/select.h
4201 check_header sys/time.h
4202 check_header sys/un.h
4203 check_header termios.h
4204 check_header unistd.h
4205 check_header vdpau/vdpau.h
4206 check_header vdpau/vdpau_x11.h
4207 check_header VideoDecodeAcceleration/VDADecoder.h
4208 check_header windows.h
4209 check_header X11/extensions/XvMClib.h
4210 check_header asm/types.h
4211
4212 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4213 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4214
4215 if ! disabled w32threads && ! enabled pthreads; then
4216     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
4217 fi
4218
4219 # check for some common methods of building with pthread support
4220 # do this before the optional library checks as some of them require pthreads
4221 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4222     enable pthreads
4223     if check_func pthread_create; then
4224         :
4225     elif check_func pthread_create -pthread; then
4226         add_cflags -pthread
4227         add_extralibs -pthread
4228     elif check_func pthread_create -pthreads; then
4229         add_cflags -pthreads
4230         add_extralibs -pthreads
4231     elif check_func pthread_create -lpthreadGC2; then
4232         add_extralibs -lpthreadGC2
4233     elif ! check_lib pthread.h pthread_create -lpthread; then
4234         disable pthreads
4235     fi
4236 fi
4237
4238 for thread in $THREADS_LIST; do
4239     if enabled $thread; then
4240         test -n "$thread_type" &&
4241             die "ERROR: Only one thread type must be selected." ||
4242             thread_type="$thread"
4243     fi
4244 done
4245
4246 if enabled pthreads; then
4247   check_func pthread_cancel
4248 fi
4249
4250 enabled sync_val_compare_and_swap && enable atomics_gcc
4251 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
4252 enabled MemoryBarrier && enable atomics_win32
4253
4254 check_lib math.h sin -lm && LIBM="-lm"
4255 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4256
4257 atan2f_args=2
4258 ldexpf_args=2
4259 powf_args=2
4260
4261 for func in $MATH_FUNCS; do
4262     eval check_mathfunc $func \${${func}_args:-1}
4263 done
4264
4265 # these are off by default, so fail if requested and not available
4266 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4267                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4268                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4269 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4270 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4271 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4272 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4273 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4274 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4275 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4276 enabled libbluray         && require libbluray libbluray/bluray.h bd_open -lbluray
4277 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4278                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4279                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4280 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4281 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4282 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4283 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"
4284 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4285 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
4286 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4287 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4288                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4289                                done || die "ERROR: libgsm not found"; }
4290 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4291 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4292 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4293 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4294 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4295 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4296 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4297 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4298                                check_lib openjpeg.h opj_version -lopenjpeg ||
4299                                die "ERROR: libopenjpeg not found"; }
4300 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4301 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4302 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4303 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4304 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4305 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4306 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4307 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4308 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4309 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4310     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4311     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4312 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4313 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4314                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4315                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4316 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4317 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4318 enabled libvidstab        && require_pkg_config vidstab vid.stab/libvidstab.h vsMotionDetectInit
4319 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4320 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4321 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4322 enabled libvpx            && {
4323     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4324                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4325     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 ||
4326                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4327     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4328     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4329 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4330 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4331                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4332                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4333 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4334 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4335 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4336 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4337 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4338                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4339                                die "ERROR: openal not found"; } &&
4340                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4341                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4342 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4343                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4344                                die "ERROR: opencl not found"; } &&
4345                              { ! enabled_any w32threads os2threads ||
4346                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4347                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4348                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4349                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4350 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4351                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4352                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4353                                die "ERROR: openssl not found"; }
4354
4355 if enabled gnutls; then
4356     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4357     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4358 fi
4359
4360 # libdc1394 check
4361 if enabled libdc1394; then
4362     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4363         enable libdc1394_2; } ||
4364     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4365         enable libdc1394_1; } ||
4366     die "ERROR: No version of libdc1394 found "
4367 fi
4368
4369 SDL_CONFIG="${cross_prefix}sdl-config"
4370 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4371     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4372     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4373     enable sdl
4374 else
4375   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4376     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4377     sdl_libs=$("${SDL_CONFIG}" --libs)
4378     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4379     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4380     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4381     enable sdl
4382   fi
4383 fi
4384 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4385
4386 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4387 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4388 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4389 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
4390 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4391
4392 check_header linux/fb.h
4393 check_header linux/videodev.h
4394 check_header linux/videodev2.h
4395 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4396
4397 check_header sys/videoio.h
4398
4399 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4400 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4401 # w32api 3.12 had it defined wrong
4402 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4403
4404 check_type "dshow.h" IBaseFilter
4405
4406 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4407 { check_header dev/bktr/ioctl_meteor.h &&
4408   check_header dev/bktr/ioctl_bt848.h; } ||
4409 { check_header machine/ioctl_meteor.h &&
4410   check_header machine/ioctl_bt848.h; } ||
4411 { check_header dev/video/meteor/ioctl_meteor.h &&
4412   check_header dev/video/bktr/ioctl_bt848.h; } ||
4413 check_header dev/ic/bt8xx.h
4414
4415 check_header sndio.h
4416 if check_struct sys/soundcard.h audio_buf_info bytes; then
4417     enable_safe sys/soundcard.h
4418 else
4419     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4420     #include <sys/soundcard.h>
4421     audio_buf_info abc;
4422 EOF
4423 fi
4424 check_header soundcard.h
4425
4426 enabled_any alsa_indev alsa_outdev &&
4427     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4428
4429 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4430     check_func jack_port_get_latency_range -ljack
4431
4432 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4433
4434 if enabled libcdio; then
4435     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4436     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4437     die "ERROR: libcdio-paranoia not found"
4438 fi
4439
4440 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4441
4442 enabled x11grab                                           &&
4443 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4444 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4445 { enabled xlib || die "ERROR: Xlib not found"; }
4446
4447 enabled vaapi &&
4448     check_lib va/va.h vaInitialize -lva ||
4449     disable vaapi
4450
4451 enabled vdpau &&
4452     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4453     disable vdpau
4454
4455 enabled vdpau && enabled xlib &&
4456     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4457     enable vdpau_x11
4458
4459 # Funny iconv installations are not unusual, so check it after all flags have been set
4460 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4461
4462 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4463
4464 # add some useful compiler flags if supported
4465 check_cflags -Wdeclaration-after-statement
4466 check_cflags -Wall
4467 check_cflags -Wdisabled-optimization
4468 check_cflags -Wpointer-arith
4469 check_cflags -Wredundant-decls
4470 check_cflags -Wwrite-strings
4471 check_cflags -Wtype-limits
4472 check_cflags -Wundef
4473 check_cflags -Wmissing-prototypes
4474 check_cflags -Wno-pointer-to-int-cast
4475 check_cflags -Wstrict-prototypes
4476 enabled extra_warnings && check_cflags -Winline
4477
4478 check_disable_warning(){
4479     warning_flag=-W${1#-Wno-}
4480     test_cflags $warning_flag && add_cflags $1
4481 }
4482
4483 check_disable_warning -Wno-parentheses
4484 check_disable_warning -Wno-switch
4485 check_disable_warning -Wno-format-zero-length
4486 check_disable_warning -Wno-pointer-sign
4487
4488 # add some linker flags
4489 check_ldflags -Wl,--warn-common
4490 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4491 enabled rpath && add_ldflags -Wl,-rpath=$libdir
4492 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4493
4494 enabled xmm_clobber_test &&
4495     check_ldflags -Wl,--wrap,avcodec_open2              \
4496                   -Wl,--wrap,avcodec_decode_audio4      \
4497                   -Wl,--wrap,avcodec_decode_video2      \
4498                   -Wl,--wrap,avcodec_decode_subtitle2   \
4499                   -Wl,--wrap,avcodec_encode_audio2      \
4500                   -Wl,--wrap,avcodec_encode_video       \
4501                   -Wl,--wrap,avcodec_encode_video2      \
4502                   -Wl,--wrap,avcodec_encode_subtitle    \
4503                   -Wl,--wrap,sws_scale ||
4504     disable xmm_clobber_test
4505
4506 echo "X{};" > $TMPV
4507 if test_ldflags -Wl,--version-script,$TMPV; then
4508     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4509     check_cc <<EOF && enable symver_asm_label
4510 void ff_foo(void) __asm__ ("av_foo@VERSION");
4511 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4512 EOF
4513     check_cc <<EOF && enable symver_gnu_asm
4514 __asm__(".symver ff_foo,av_foo@VERSION");
4515 void ff_foo(void) {}
4516 EOF
4517 fi
4518
4519 if [ -z "$optflags" ]; then
4520     if enabled small; then
4521         optflags=$cflags_size
4522     elif enabled optimizations; then
4523         optflags=$cflags_speed
4524     else
4525         optflags=$cflags_noopt
4526     fi
4527 fi
4528
4529 check_optflags(){
4530     check_cflags "$@"
4531     enabled lto && check_ldflags "$@"
4532 }
4533
4534
4535 if enabled lto; then
4536     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4537     check_cflags  -flto
4538     check_ldflags -flto $cpuflags
4539 fi
4540
4541 check_optflags $optflags
4542 check_optflags -fno-math-errno
4543 check_optflags -fno-signed-zeros
4544
4545 enabled ftrapv && check_cflags -ftrapv
4546
4547 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4548 int x;
4549 EOF
4550
4551
4552 if enabled icc; then
4553     # Just warnings, no remarks
4554     check_cflags -w1
4555     # -wd: Disable following warnings
4556     # 144, 167, 556: -Wno-pointer-sign
4557     # 188: enumerated type mixed with another type
4558     # 1292: attribute "foo" ignored
4559     # 1419: external declaration in primary source file
4560     # 10006: ignoring unknown option -fno-signed-zeros
4561     # 10148: ignoring unknown option -Wno-parentheses
4562     # 10156: ignoring option '-W'; no argument required
4563     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4564     # 11030: Warning unknown option --as-needed
4565     # 10156: ignoring option '-export'; no argument required
4566     check_ldflags -wd10156,11030
4567     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4568     enable ebp_available
4569     if enabled x86_32; then
4570         icc_version=$($cc -dumpversion)
4571         test ${icc_version%%.*} -ge 11 &&
4572             check_cflags -falign-stack=maintain-16-byte ||
4573             disable aligned_stack
4574     fi
4575 elif enabled ccc; then
4576     # disable some annoying warnings
4577     add_cflags -msg_disable bitnotint
4578     add_cflags -msg_disable mixfuncvoid
4579     add_cflags -msg_disable nonstandcast
4580     add_cflags -msg_disable unsupieee
4581 elif enabled gcc; then
4582     check_optflags -fno-tree-vectorize
4583     check_cflags -Werror=implicit-function-declaration
4584     check_cflags -Werror=missing-prototypes
4585     check_cflags -Werror=return-type
4586     check_cflags -Werror=vla
4587     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4588 elif enabled llvm_gcc; then
4589     check_cflags -mllvm -stack-alignment=16
4590 elif enabled clang; then
4591     check_cflags -mllvm -stack-alignment=16
4592     check_cflags -Qunused-arguments
4593     check_cflags -Werror=implicit-function-declaration
4594     check_cflags -Werror=missing-prototypes
4595     check_cflags -Werror=return-type
4596 elif enabled cparser; then
4597     add_cflags -Wno-missing-variable-declarations
4598     add_cflags -Wno-empty-statement
4599 elif enabled armcc; then
4600     # 2523: use of inline assembler is deprecated
4601     add_cflags -W${armcc_opt},--diag_suppress=2523
4602     add_cflags -W${armcc_opt},--diag_suppress=1207
4603     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4604     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4605     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4606     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4607 elif enabled tms470; then
4608     add_cflags -pds=824 -pds=837
4609 elif enabled pathscale; then
4610     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4611 elif enabled_any msvc icl; then
4612     enabled x86_32 && disable aligned_stack
4613     enabled_all x86_32 debug && add_cflags -Oy-
4614     enabled debug && add_ldflags -debug
4615     enable pragma_deprecated
4616     if enabled icl; then
4617         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4618         # (correctly) on icl 13.x.
4619         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4620             add_cflags -Qansi-alias
4621         # icl will pass the inline asm tests but inline asm is currently
4622         # not supported (build will fail)
4623         disabled inline_asm || warn "inline asm disabled due to issues with it in ICL"
4624         disable inline_asm
4625     fi
4626 fi
4627
4628 case $target_os in
4629     osf1)
4630         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4631     ;;
4632     plan9)
4633         add_cppflags -Dmain=plan9_main
4634     ;;
4635 esac
4636
4637 enable frame_thread_encoder
4638 enabled_any $THREADS_LIST      && enable threads
4639 enabled_any $ATOMICS_LIST      && enable atomics_native
4640
4641 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
4642
4643 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4644
4645 check_deps $CONFIG_LIST       \
4646            $CONFIG_EXTRA      \
4647            $HAVE_LIST         \
4648            $ALL_COMPONENTS    \
4649
4650
4651 if test $target_os = "haiku"; then
4652     disable memalign
4653     disable posix_memalign
4654 fi
4655
4656 ! enabled_any memalign posix_memalign aligned_malloc &&
4657     enabled_any $need_memalign && enable memalign_hack
4658
4659 # add_dep lib dep
4660 # -> enable ${lib}_deps_${dep}
4661 # -> add $dep to ${lib}_deps only once
4662 add_dep() {
4663     lib=$1
4664     dep=$2
4665     enabled "${lib}_deps_${dep}" && return 0
4666     enable  "${lib}_deps_${dep}"
4667     prepend "${lib}_deps" $dep
4668 }
4669
4670 # merge deps lib components
4671 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4672 merge_deps() {
4673     lib=$1
4674     shift
4675     for comp in $*; do
4676         enabled $comp || continue
4677         eval "dep=\"\$${comp}_deps\""
4678         for d in $dep; do
4679             add_dep $lib $d
4680         done
4681     done
4682 }
4683
4684 merge_deps libavfilter $FILTER_LIST
4685
4686 echo "install prefix            $prefix"
4687 echo "source path               $source_path"
4688 echo "C compiler                $cc"
4689 echo "ARCH                      $arch ($cpu)"
4690 if test "$build_suffix" != ""; then
4691     echo "build suffix              $build_suffix"
4692 fi
4693 if test "$progs_suffix" != ""; then
4694     echo "progs suffix              $progs_suffix"
4695 fi
4696 if test "$extra_version" != ""; then
4697     echo "version string suffix     $extra_version"
4698 fi
4699 echo "big-endian                ${bigendian-no}"
4700 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4701 if enabled x86; then
4702     echo "${yasmexe}                      ${yasm-no}"
4703     echo "MMX enabled               ${mmx-no}"
4704     echo "MMXEXT enabled            ${mmxext-no}"
4705     echo "3DNow! enabled            ${amd3dnow-no}"
4706     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4707     echo "SSE enabled               ${sse-no}"
4708     echo "SSSE3 enabled             ${ssse3-no}"
4709     echo "AVX enabled               ${avx-no}"
4710     echo "FMA4 enabled              ${fma4-no}"
4711     echo "i686 features enabled     ${i686-no}"
4712     echo "CMOV is fast              ${fast_cmov-no}"
4713     echo "EBX available             ${ebx_available-no}"
4714     echo "EBP available             ${ebp_available-no}"
4715 fi
4716 if enabled arm; then
4717     echo "ARMv5TE enabled           ${armv5te-no}"
4718     echo "ARMv6 enabled             ${armv6-no}"
4719     echo "ARMv6T2 enabled           ${armv6t2-no}"
4720     echo "VFP enabled               ${vfp-no}"
4721     echo "NEON enabled              ${neon-no}"
4722     echo "THUMB enabled             ${thumb-no}"
4723 fi
4724 if enabled mips; then
4725     echo "MIPS FPU enabled          ${mipsfpu-no}"
4726     echo "MIPS32R2 enabled          ${mips32r2-no}"
4727     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4728     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4729 fi
4730 if enabled ppc; then
4731     echo "AltiVec enabled           ${altivec-no}"
4732     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4733     echo "dcbzl available           ${dcbzl-no}"
4734 fi
4735 if enabled sparc; then
4736     echo "VIS enabled               ${vis-no}"
4737 fi
4738 echo "debug symbols             ${debug-no}"
4739 echo "strip symbols             ${stripping-no}"
4740 echo "optimize for size         ${small-no}"
4741 echo "optimizations             ${optimizations-no}"
4742 echo "static                    ${static-no}"
4743 echo "shared                    ${shared-no}"
4744 echo "postprocessing support    ${postproc-no}"
4745 echo "new filter support        ${avfilter-no}"
4746 echo "network support           ${network-no}"
4747 echo "threading support         ${thread_type-no}"
4748 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4749 echo "SDL support               ${sdl-no}"
4750 echo "opencl enabled            ${opencl-no}"
4751 echo "libzvbi enabled           ${libzvbi-no}"
4752 echo "texi2html enabled         ${texi2html-no}"
4753 echo "perl enabled              ${perl-no}"
4754 echo "pod2man enabled           ${pod2man-no}"
4755 echo "makeinfo enabled          ${makeinfo-no}"
4756 test -n "$random_seed" &&
4757     echo "random seed               ${random_seed}"
4758 echo
4759
4760 echo "External libraries:"
4761 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4762 echo
4763
4764 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4765     echo "Enabled ${type}s:"
4766     eval list=\$$(toupper $type)_LIST
4767     print_enabled '_*' $list | print_3_columns
4768     echo
4769 done
4770
4771 license="LGPL version 2.1 or later"
4772 if enabled nonfree; then
4773     license="nonfree and unredistributable"
4774 elif enabled gplv3; then
4775     license="GPL version 3 or later"
4776 elif enabled lgplv3; then
4777     license="LGPL version 3 or later"
4778 elif enabled gpl; then
4779     license="GPL version 2 or later"
4780 fi
4781
4782 echo "License: $license"
4783
4784 echo "Creating config.mak, config.h, and doc/config.texi..."
4785
4786 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4787
4788 enabled stripping || strip="echo skipping strip"
4789
4790 config_files="$TMPH config.mak doc/config.texi"
4791
4792 cat > config.mak <<EOF
4793 # Automatically generated by configure - do not modify!
4794 ifndef FFMPEG_CONFIG_MAK
4795 FFMPEG_CONFIG_MAK=1
4796 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4797 prefix=$prefix
4798 LIBDIR=\$(DESTDIR)$libdir
4799 SHLIBDIR=\$(DESTDIR)$shlibdir
4800 INCDIR=\$(DESTDIR)$incdir
4801 BINDIR=\$(DESTDIR)$bindir
4802 DATADIR=\$(DESTDIR)$datadir
4803 DOCDIR=\$(DESTDIR)$docdir
4804 MANDIR=\$(DESTDIR)$mandir
4805 SRC_PATH=$source_path
4806 ifndef MAIN_MAKEFILE
4807 SRC_PATH:=\$(SRC_PATH:.%=..%)
4808 endif
4809 CC_IDENT=$cc_ident
4810 ARCH=$arch
4811 CC=$cc
4812 CXX=$cxx
4813 AS=$as
4814 LD=$ld
4815 DEPCC=$dep_cc
4816 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4817 DEPAS=$as
4818 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4819 YASM=$yasmexe
4820 DEPYASM=$yasmexe
4821 AR=$ar
4822 ARFLAGS=$arflags
4823 AR_O=$ar_o
4824 RANLIB=$ranlib
4825 STRIP=$strip
4826 CP=cp -p
4827 LN_S=$ln_s
4828 CPPFLAGS=$CPPFLAGS
4829 CFLAGS=$CFLAGS
4830 CXXFLAGS=$CXXFLAGS
4831 ASFLAGS=$ASFLAGS
4832 AS_C=$AS_C
4833 AS_O=$AS_O
4834 CC_C=$CC_C
4835 CC_E=$CC_E
4836 CC_O=$CC_O
4837 CXX_C=$CXX_C
4838 CXX_O=$CXX_O
4839 LD_O=$LD_O
4840 LD_LIB=$LD_LIB
4841 LD_PATH=$LD_PATH
4842 DLLTOOL=$dlltool
4843 LDFLAGS=$LDFLAGS
4844 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4845 YASMFLAGS=$YASMFLAGS
4846 BUILDSUF=$build_suffix
4847 PROGSSUF=$progs_suffix
4848 FULLNAME=$FULLNAME
4849 LIBPREF=$LIBPREF
4850 LIBSUF=$LIBSUF
4851 LIBNAME=$LIBNAME
4852 SLIBPREF=$SLIBPREF
4853 SLIBSUF=$SLIBSUF
4854 EXESUF=$EXESUF
4855 EXTRA_VERSION=$extra_version
4856 CCDEP=$CCDEP
4857 CXXDEP=$CXXDEP
4858 CCDEP_FLAGS=$CCDEP_FLAGS
4859 ASDEP=$ASDEP
4860 ASDEP_FLAGS=$ASDEP_FLAGS
4861 CC_DEPFLAGS=$CC_DEPFLAGS
4862 AS_DEPFLAGS=$AS_DEPFLAGS
4863 HOSTCC=$host_cc
4864 HOSTLD=$host_ld
4865 HOSTCFLAGS=$host_cflags
4866 HOSTCPPFLAGS=$host_cppflags
4867 HOSTEXESUF=$HOSTEXESUF
4868 HOSTLDFLAGS=$host_ldflags
4869 HOSTLIBS=$host_libs
4870 DEPHOSTCC=$host_cc
4871 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4872 HOSTCCDEP=$HOSTCCDEP
4873 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4874 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4875 HOSTCC_C=$HOSTCC_C
4876 HOSTCC_O=$HOSTCC_O
4877 HOSTLD_O=$HOSTLD_O
4878 TARGET_EXEC=$target_exec $target_exec_args
4879 TARGET_PATH=$target_path
4880 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4881 LIBS-ffplay=$sdl_libs
4882 CFLAGS-ffplay=$sdl_cflags
4883 ZLIB=$($ldflags_filter -lz)
4884 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4885 EXTRALIBS=$extralibs
4886 COMPAT_OBJS=$compat_objs
4887 EXEOBJS=$exeobjs
4888 INSTALL=$install
4889 LIBTARGET=${LIBTARGET}
4890 SLIBNAME=${SLIBNAME}
4891 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4892 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4893 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4894 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4895 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4896 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4897 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4898 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4899 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4900 NOREDZONE_FLAGS=$noredzone_flags
4901 EOF
4902
4903 get_version(){
4904     lcname=lib${1}
4905     name=$(toupper $lcname)
4906     file=$source_path/$lcname/version.h
4907     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4908     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4909     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4910     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4911     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4912 }
4913
4914 map 'get_version $v' $LIBRARY_LIST
4915
4916 cat > $TMPH <<EOF
4917 /* Automatically generated by configure - do not modify! */
4918 #ifndef FFMPEG_CONFIG_H
4919 #define FFMPEG_CONFIG_H
4920 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4921 #define FFMPEG_LICENSE "$(c_escape $license)"
4922 #define CONFIG_THIS_YEAR 2013
4923 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4924 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4925 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4926 #define av_restrict $_restrict
4927 #define EXTERN_PREFIX "${extern_prefix}"
4928 #define EXTERN_ASM ${extern_prefix}
4929 #define SLIBSUF "$SLIBSUF"
4930 #define HAVE_MMX2 HAVE_MMXEXT
4931 EOF
4932
4933 test -n "$assert_level" &&
4934     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4935
4936 test -n "$malloc_prefix" &&
4937     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4938
4939 if enabled yasm; then
4940     append config_files $TMPASM
4941     printf '' >$TMPASM
4942 fi
4943
4944 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4945
4946
4947 mkdir -p doc
4948 echo "@c auto-generated by configure" > doc/config.texi
4949
4950 print_config ARCH_   "$config_files" $ARCH_LIST
4951 print_config HAVE_   "$config_files" $HAVE_LIST
4952 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4953                                      $CONFIG_EXTRA      \
4954                                      $ALL_COMPONENTS    \
4955
4956 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4957 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4958
4959 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4960 cp_if_changed $TMPH config.h
4961 touch .config
4962
4963 enabled yasm && cp_if_changed $TMPASM config.asm
4964
4965 cat > $TMPH <<EOF
4966 /* Generated by ffconf */
4967 #ifndef AVUTIL_AVCONFIG_H
4968 #define AVUTIL_AVCONFIG_H
4969 EOF
4970
4971 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4972
4973 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4974
4975 cp_if_changed $TMPH libavutil/avconfig.h
4976
4977 if test -n "$WARNINGS"; then
4978     printf "\n$WARNINGS"
4979     enabled fatal_warnings && exit 1
4980 fi
4981
4982 # build pkg-config files
4983
4984 pkgconfig_generate(){
4985     name=$1
4986     shortname=${name#lib}${build_suffix}
4987     comment=$2
4988     version=$3
4989     libs=$4
4990     requires=$5
4991     enabled ${name#lib} || return 0
4992     mkdir -p $name
4993     cat <<EOF > $name/$name${build_suffix}.pc
4994 prefix=$prefix
4995 exec_prefix=\${prefix}
4996 libdir=$libdir
4997 includedir=$incdir
4998
4999 Name: $name
5000 Description: $comment
5001 Version: $version
5002 Requires: $(enabled shared || echo $requires)
5003 Requires.private: $(enabled shared && echo $requires)
5004 Conflicts:
5005 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5006 Libs.private: $(enabled shared && echo $libs)
5007 Cflags: -I\${includedir}
5008 EOF
5009
5010 mkdir -p doc/examples/pc-uninstalled
5011 includedir=${source_path}
5012 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5013     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5014 prefix=
5015 exec_prefix=
5016 libdir=\${pcfiledir}/../../../$name
5017 includedir=${includedir}
5018
5019 Name: $name
5020 Description: $comment
5021 Version: $version
5022 Requires: $requires
5023 Conflicts:
5024 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5025 Cflags: -I\${includedir}
5026 EOF
5027 }
5028
5029 lavfi_libs="libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5030 enabled libavfilter_deps_avcodec    && prepend lavfi_libs "libavcodec${build_suffix} = $LIBAVCODEC_VERSION,"
5031 enabled libavfilter_deps_avformat   && prepend lavfi_libs "libavformat${build_suffix} = $LIBAVFORMAT_VERSION,"
5032 enabled libavfilter_deps_avresample && prepend lavfi_libs "libavresample${build_suffix} = $LIBAVRESAMPLE_VERSION,"
5033 enabled libavfilter_deps_swscale    && prepend lavfi_libs "libswscale${build_suffix} = $LIBSWSCALE_VERSION,"
5034 enabled libavfilter_deps_swresample && prepend lavfi_libs "libswresample${build_suffix} = $LIBSWRESAMPLE_VERSION,"
5035 enabled libavfilter_deps_postproc   && prepend lavfi_libs "libpostproc${build_suffix} = $LIBPOSTPROC_VERSION,"
5036 lavfi_libs=${lavfi_libs%, }
5037
5038 lavd_libs="libavformat${build_suffix} = $LIBAVFORMAT_VERSION"
5039 enabled lavfi_indev && prepend lavd_libs "libavfilter${build_suffix} = $LIBAVFILTER_VERSION,"
5040
5041 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
5042 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5043 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec${build_suffix} = $LIBAVCODEC_VERSION"
5044 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs" "$lavd_libs"
5045 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
5046 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""           "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5047 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5048 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5049 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5050
5051 fix_ffmpeg_remote(){
5052     git_remote_from=$1
5053     git_remote_to=$2
5054     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
5055     if [ "$fixme_remote" != "" ]; then
5056         echolog "
5057 Outdated domain in git config, the official domain for ffmpeg git is since
5058 November 2011, source.ffmpeg.org, both the old and the new point to the same
5059 repository and server. To update it enter the following commands:
5060 "
5061         for remote in $fixme_remote; do
5062             echolog "git remote set-url $remote $git_remote_to"
5063         done
5064     fi
5065 }
5066
5067 if test -f "$source_path/.git/config"; then
5068     remote_from=git.videolan.org
5069     remote_to=source.ffmpeg.org
5070     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
5071     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
5072 fi