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