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-raise-major     increase major version numbers in sonames [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   --disable-vda            disable VDA code [autodetect]
 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-libbs2b         enable bs2b DSP library [no]
 203   --enable-libcaca         enable textual display using libcaca
 204   --enable-libcelt         enable CELT decoding via libcelt [no]
 205   --enable-libcdio         enable audio CD grabbing with libcdio
 206   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 207                            and libraw1394 [no]
 208   --enable-libfaac         enable AAC encoding via libfaac [no]
 209   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 210   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 211   --enable-libfreetype     enable libfreetype [no]
 212   --enable-libgme          enable Game Music Emu via libgme [no]
 213   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 214   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 215   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 216   --enable-libmodplug      enable ModPlug via libmodplug [no]
 217   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 218   --enable-libnut          enable NUT (de)muxing via libnut,
 219                            native (de)muxer exists [no]
 220   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 221   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 222   --enable-libopencv       enable video filtering via libopencv [no]
 223   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 224   --enable-libopus         enable Opus de/encoding via libopus [no]
 225   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 226   --enable-libquvi         enable quvi input via libquvi [no]
 227   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 228   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 229   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 230   --enable-libsoxr         enable Include libsoxr resampling [no]
 231   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 232   --enable-libssh          enable SFTP protocol via libssh [no]
 233   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 234   --enable-libtheora       enable Theora encoding via libtheora [no]
 235   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 236   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 237   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 238   --enable-libvidstab      enable video stabilization using vid.stab [no]
 239   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 240   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 241   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 242                            native implementation exists [no]
 243   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 244   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 245   --enable-libwebp         enable WebP encoding via libwebp [no]
 246   --enable-libx264         enable H.264 encoding via x264 [no]
 247   --enable-libx265         enable HEVC encoding via x265 [no]
 248   --enable-libxavs         enable AVS encoding via xavs [no]
 249   --enable-libxvid         enable Xvid encoding via xvidcore,
 250                            native MPEG-4/Xvid encoder exists [no]
 251   --enable-libzmq          enable message passing via libzmq [no]
 252   --enable-libzvbi         enable teletext support via libzvbi [no]
 253   --enable-decklink        enable Blackmagick DeckLink output [no]
 254   --enable-openal          enable OpenAL 1.1 capture support [no]
 255   --enable-opencl          enable OpenCL code
 256   --enable-opengl          enable OpenGL rendering [no]
 257   --enable-openssl         enable openssl [no]
 258   --enable-x11grab         enable X11 grabbing [no]
 259   --disable-xlib           disable xlib [autodetect]
 260   --disable-zlib           disable zlib [autodetect]
 261
 262 Toolchain options:
 263   --arch=ARCH              select architecture [$arch]
 264   --cpu=CPU                select the minimum required CPU (affects
 265                            instruction selection, may crash on older CPUs)
 266   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 267   --progs-suffix=SUFFIX    program name suffix []
 268   --enable-cross-compile   assume a cross-compiler is used
 269   --sysroot=PATH           root of cross-build tree
 270   --sysinclude=PATH        location of cross-build system headers
 271   --target-os=OS           compiler targets OS [$target_os]
 272   --target-exec=CMD        command to run executables on target
 273   --target-path=DIR        path to view of build directory on target
 274   --target-samples=DIR     path to samples directory on target
 275   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 276   --toolchain=NAME         set tool defaults according to NAME
 277   --nm=NM                  use nm tool NM [$nm_default]
 278   --ar=AR                  use archive tool AR [$ar_default]
 279   --as=AS                  use assembler AS [$as_default]
 280   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 281   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 282   --cc=CC                  use C compiler CC [$cc_default]
 283   --cxx=CXX                use C compiler CXX [$cxx_default]
 284   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 285   --ld=LD                  use linker LD [$ld_default]
 286   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 287   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 288   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 289   --host-cc=HOSTCC         use host C compiler HOSTCC
 290   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 291   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 292   --host-ld=HOSTLD         use host linker HOSTLD
 293   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 294   --host-libs=HLIBS        use libs HLIBS when linking for host
 295   --host-os=OS             compiler host OS [$target_os]
 296   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 297   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 298   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 299   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 300   --extra-version=STRING   version string suffix []
 301   --optflags=OPTFLAGS      override optimization-related compiler flags
 302   --build-suffix=SUFFIX    library name suffix []
 303   --enable-pic             build position-independent code
 304   --enable-thumb           compile for Thumb instruction set
 305   --enable-lto             use link-time optimization
 306
 307 Advanced options (experts only):
 308   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 309   --disable-symver         disable symbol versioning
 310   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 311   --disable-safe-bitstream-reader
 312                            disable buffer boundary checking in bitreaders
 313                            (faster, but may crash)
 314   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 315   --enable-sram            allow use of on-chip SRAM
 316   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 317
 318 Optimization options (experts only):
 319   --disable-asm            disable all assembler optimizations
 320   --disable-altivec        disable AltiVec optimizations
 321   --disable-amd3dnow       disable 3DNow! optimizations
 322   --disable-amd3dnowext    disable 3DNow! extended optimizations
 323   --disable-mmx            disable MMX optimizations
 324   --disable-mmxext         disable MMXEXT optimizations
 325   --disable-sse            disable SSE optimizations
 326   --disable-sse2           disable SSE2 optimizations
 327   --disable-sse3           disable SSE3 optimizations
 328   --disable-ssse3          disable SSSE3 optimizations
 329   --disable-sse4           disable SSE4 optimizations
 330   --disable-sse42          disable SSE4.2 optimizations
 331   --disable-avx            disable AVX optimizations
 332   --disable-xop            disable XOP optimizations
 333   --disable-fma3           disable FMA3 optimizations
 334   --disable-fma4           disable FMA4 optimizations
 335   --disable-avx2           disable AVX2 optimizations
 336   --disable-armv5te        disable armv5te optimizations
 337   --disable-armv6          disable armv6 optimizations
 338   --disable-armv6t2        disable armv6t2 optimizations
 339   --disable-vfp            disable VFP optimizations
 340   --disable-neon           disable NEON optimizations
 341   --disable-inline-asm     disable use of inline assembler
 342   --disable-yasm           disable use of yasm assembler
 343   --disable-mips32r2       disable MIPS32R2 optimizations
 344   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 345   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 346   --disable-mipsfpu        disable floating point MIPS optimizations
 347   --disable-fast-unaligned consider unaligned accesses slow
 348
 349 Developer options (useful when working on FFmpeg itself):
 350   --disable-debug          disable debugging symbols
 351   --enable-debug=LEVEL     set the debug level [$debuglevel]
 352   --disable-optimizations  disable compiler optimizations
 353   --enable-extra-warnings  enable more compiler warnings
 354   --disable-stripping      disable stripping of executables and shared libraries
 355   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 356                            2 causes a slowdown at runtime.
 357   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 358   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 359                            leaks and errors, using the specified valgrind binary.
 360                            Cannot be combined with --target-exec
 361   --enable-ftrapv          Trap arithmetic overflows
 362   --samples=PATH           location of test samples for FATE, if not set use
 363                            \$FATE_SAMPLES at make invocation time.
 364   --enable-neon-clobber-test check NEON registers for clobbering (should be
 365                            used only for debugging purposes)
 366   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 367                            should be used only for debugging purposes)
 368   --enable-random          randomly enable/disable components
 369   --disable-random
 370   --enable-random=LIST     randomly enable/disable specific components or
 371   --disable-random=LIST    component groups. LIST is a comma-separated list
 372                            of NAME[:PROB] entries where NAME is a component
 373                            (group) and PROB the probability associated with
 374                            NAME (default 0.5).
 375   --random-seed=VALUE      seed value for --enable/disable-random
 376
 377 NOTE: Object files are built at the place where configure is launched.
 378 EOF
 379   exit 0
 380 }
 381
 382 quotes='""'
 383
 384 log(){
 385     echo "$@" >> $logfile
 386 }
 387
 388 log_file(){
 389     log BEGIN $1
 390     pr -n -t $1 >> $logfile
 391     log END $1
 392 }
 393
 394 echolog(){
 395     log "$@"
 396     echo "$@"
 397 }
 398
 399 warn(){
 400     log "WARNING: $*"
 401     WARNINGS="${WARNINGS}WARNING: $*\n"
 402 }
 403
 404 die(){
 405     echolog "$@"
 406     cat <<EOF
 407
 408 If you think configure made a mistake, make sure you are using the latest
 409 version from Git.  If the latest version fails, report the problem to the
 410 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 411 EOF
 412     if disabled logging; then
 413         cat <<EOF
 414 Rerun configure with logging enabled (do not use --disable-logging), and
 415 include the log this produces with your report.
 416 EOF
 417     else
 418         cat <<EOF
 419 Include the log file "$logfile" produced by configure as this will help
 420 solve the problem.
 421 EOF
 422     fi
 423     exit 1
 424 }
 425
 426 # Avoid locale weirdness, besides we really just want to translate ASCII.
 427 toupper(){
 428     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 429 }
 430
 431 tolower(){
 432     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 433 }
 434
 435 c_escape(){
 436     echo "$*" | sed 's/["\\]/\\\0/g'
 437 }
 438
 439 sh_quote(){
 440     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 441     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 442     echo "$v"
 443 }
 444
 445 cleanws(){
 446     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
 447 }
 448
 449 filter(){
 450     pat=$1
 451     shift
 452     for v; do
 453         eval "case $v in $pat) echo $v ;; esac"
 454     done
 455 }
 456
 457 filter_out(){
 458     pat=$1
 459     shift
 460     for v; do
 461         eval "case $v in $pat) ;; *) echo $v ;; esac"
 462     done
 463 }
 464
 465 map(){
 466     m=$1
 467     shift
 468     for v; do eval $m; done
 469 }
 470
 471 add_suffix(){
 472     suffix=$1
 473     shift
 474     for v; do echo ${v}${suffix}; done
 475 }
 476
 477 set_all(){
 478     value=$1
 479     shift
 480     for var in $*; do
 481         eval $var=$value
 482     done
 483 }
 484
 485 set_weak(){
 486     value=$1
 487     shift
 488     for var; do
 489         eval : \${$var:=$value}
 490     done
 491 }
 492
 493 sanitize_var_name(){
 494     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 495 }
 496
 497 set_safe(){
 498     var=$1
 499     shift
 500     eval $(sanitize_var_name "$var")='$*'
 501 }
 502
 503 get_safe(){
 504     eval echo \$$(sanitize_var_name "$1")
 505 }
 506
 507 pushvar(){
 508     for pvar in $*; do
 509         eval level=\${${pvar}_level:=0}
 510         eval ${pvar}_${level}="\$$pvar"
 511         eval ${pvar}_level=$(($level+1))
 512     done
 513 }
 514
 515 popvar(){
 516     for pvar in $*; do
 517         eval level=\${${pvar}_level:-0}
 518         test $level = 0 && continue
 519         eval level=$(($level-1))
 520         eval $pvar="\${${pvar}_${level}}"
 521         eval ${pvar}_level=$level
 522         eval unset ${pvar}_${level}
 523     done
 524 }
 525
 526 enable(){
 527     set_all yes $*
 528 }
 529
 530 disable(){
 531     set_all no $*
 532 }
 533
 534 enable_weak(){
 535     set_weak yes $*
 536 }
 537
 538 disable_weak(){
 539     set_weak no $*
 540 }
 541
 542 enable_safe(){
 543     for var; do
 544         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 545     done
 546 }
 547
 548 disable_safe(){
 549     for var; do
 550         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 551     done
 552 }
 553
 554 do_enable_deep(){
 555     for var; do
 556         enabled $var && continue
 557         eval sel="\$${var}_select"
 558         eval sgs="\$${var}_suggest"
 559         pushvar var sgs
 560         enable_deep $sel
 561         popvar sgs
 562         enable_deep_weak $sgs
 563         popvar var
 564     done
 565 }
 566
 567 enable_deep(){
 568     do_enable_deep $*
 569     enable $*
 570 }
 571
 572 enable_deep_weak(){
 573     for var; do
 574         disabled $var && continue
 575         pushvar var
 576         do_enable_deep $var
 577         popvar var
 578         enable_weak $var
 579     done
 580 }
 581
 582 enabled(){
 583     test "${1#!}" = "$1" && op== || op=!=
 584     eval test "x\$${1#!}" $op "xyes"
 585 }
 586
 587 disabled(){
 588     test "${1#!}" = "$1" && op== || op=!=
 589     eval test "x\$${1#!}" $op "xno"
 590 }
 591
 592 enabled_all(){
 593     for opt; do
 594         enabled $opt || return 1
 595     done
 596 }
 597
 598 disabled_all(){
 599     for opt; do
 600         disabled $opt || return 1
 601     done
 602 }
 603
 604 enabled_any(){
 605     for opt; do
 606         enabled $opt && return 0
 607     done
 608 }
 609
 610 disabled_any(){
 611     for opt; do
 612         disabled $opt && return 0
 613     done
 614     return 1
 615 }
 616
 617 set_default(){
 618     for opt; do
 619         eval : \${$opt:=\$${opt}_default}
 620     done
 621 }
 622
 623 is_in(){
 624     value=$1
 625     shift
 626     for var in $*; do
 627         [ $var = $value ] && return 0
 628     done
 629     return 1
 630 }
 631
 632 do_check_deps(){
 633     for cfg; do
 634         cfg="${cfg#!}"
 635         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 636         disabled ${cfg}_checking && continue
 637         enable ${cfg}_checking
 638         append allopts $cfg
 639
 640         eval dep_all="\$${cfg}_deps"
 641         eval dep_any="\$${cfg}_deps_any"
 642         eval dep_sel="\$${cfg}_select"
 643         eval dep_sgs="\$${cfg}_suggest"
 644         eval dep_ifa="\$${cfg}_if"
 645         eval dep_ifn="\$${cfg}_if_any"
 646
 647         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 648         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 649         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 650
 651         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 652         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 653         enabled_all  $dep_all || disable $cfg
 654         enabled_any  $dep_any || disable $cfg
 655         disabled_any $dep_sel && disable $cfg
 656
 657         if enabled $cfg; then
 658             enable_deep $dep_sel
 659             enable_deep_weak $dep_sgs
 660         fi
 661
 662         disable ${cfg}_checking
 663     done
 664 }
 665
 666 check_deps(){
 667     unset allopts
 668
 669     do_check_deps "$@"
 670
 671     for cfg in $allopts; do
 672         enabled $cfg || continue
 673         eval dep_extralibs="\$${cfg}_extralibs"
 674         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 675     done
 676 }
 677
 678 print_config(){
 679     pfx=$1
 680     files=$2
 681     shift 2
 682     map 'eval echo "$v \${$v:-no}"' "$@" |
 683     awk "BEGIN { split(\"$files\", files) }
 684         {
 685             c = \"$pfx\" toupper(\$1);
 686             v = \$2;
 687             sub(/yes/, 1, v);
 688             sub(/no/,  0, v);
 689             for (f in files) {
 690                 file = files[f];
 691                 if (file ~ /\\.h\$/) {
 692                     printf(\"#define %s %d\\n\", c, v) >>file;
 693                 } else if (file ~ /\\.asm\$/) {
 694                     printf(\"%%define %s %d\\n\", c, v) >>file;
 695                 } else if (file ~ /\\.mak\$/) {
 696                     n = -v ? \"\" : \"!\";
 697                     printf(\"%s%s=yes\\n\", n, c) >>file;
 698                 } else if (file ~ /\\.texi\$/) {
 699                     pre = -v ? \"\" : \"@c \";
 700                     yesno = \$2;
 701                     c2 = tolower(c);
 702                     gsub(/_/, \"-\", c2);
 703                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 704                 }
 705             }
 706         }"
 707 }
 708
 709 print_enabled(){
 710     suf=$1
 711     shift
 712     for v; do
 713         enabled $v && printf "%s\n" ${v%$suf};
 714     done
 715 }
 716
 717 append(){
 718     var=$1
 719     shift
 720     eval "$var=\"\$$var $*\""
 721 }
 722
 723 prepend(){
 724     var=$1
 725     shift
 726     eval "$var=\"$* \$$var\""
 727 }
 728
 729 unique(){
 730     var=$1
 731     uniq_list=""
 732     for tok in $(eval echo \$$var); do
 733         uniq_list="$(filter_out $tok $uniq_list) $tok"
 734     done
 735     eval "$var=\"${uniq_list}\""
 736 }
 737
 738 add_cppflags(){
 739     append CPPFLAGS "$@"
 740 }
 741
 742 add_cflags(){
 743     append CFLAGS $($cflags_filter "$@")
 744 }
 745
 746 add_cxxflags(){
 747     append CXXFLAGS $($cflags_filter "$@")
 748 }
 749
 750 add_asflags(){
 751     append ASFLAGS $($asflags_filter "$@")
 752 }
 753
 754 add_ldflags(){
 755     append LDFLAGS $($ldflags_filter "$@")
 756 }
 757
 758 add_stripflags(){
 759     append ASMSTRIPFLAGS "$@"
 760 }
 761
 762 add_extralibs(){
 763     prepend extralibs $($ldflags_filter "$@")
 764 }
 765
 766 add_host_cppflags(){
 767     append host_cppflags "$@"
 768 }
 769
 770 add_host_cflags(){
 771     append host_cflags $($host_cflags_filter "$@")
 772 }
 773
 774 add_host_ldflags(){
 775     append host_ldflags $($host_ldflags_filter "$@")
 776 }
 777
 778 add_compat(){
 779     append compat_objs $1
 780     shift
 781     map 'add_cppflags -D$v' "$@"
 782 }
 783
 784 check_cmd(){
 785     log "$@"
 786     "$@" >> $logfile 2>&1
 787 }
 788
 789 check_stat(){
 790     log check_stat "$@"
 791     stat "$1" >> $logfile 2>&1
 792 }
 793
 794 cc_o(){
 795     eval printf '%s\\n' $CC_O
 796 }
 797
 798 cc_e(){
 799     eval printf '%s\\n' $CC_E
 800 }
 801
 802 check_cc(){
 803     log check_cc "$@"
 804     cat > $TMPC
 805     log_file $TMPC
 806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 807 }
 808
 809 check_cxx(){
 810     log check_cxx "$@"
 811     cat > $TMPCPP
 812     log_file $TMPCPP
 813     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 814 }
 815
 816 check_oc(){
 817     log check_oc "$@"
 818     cat > $TMPM
 819     log_file $TMPM
 820     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
 821 }
 822
 823 check_cpp(){
 824     log check_cpp "$@"
 825     cat > $TMPC
 826     log_file $TMPC
 827     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 828 }
 829
 830 as_o(){
 831     eval printf '%s\\n' $AS_O
 832 }
 833
 834 check_as(){
 835     log check_as "$@"
 836     cat > $TMPS
 837     log_file $TMPS
 838     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 839 }
 840
 841 check_inline_asm(){
 842     log check_inline_asm "$@"
 843     name="$1"
 844     code="$2"
 845     shift 2
 846     disable $name
 847     check_cc "$@" <<EOF && enable $name
 848 void foo(void){ __asm__ volatile($code); }
 849 EOF
 850 }
 851
 852 check_insn(){
 853     log check_insn "$@"
 854     check_inline_asm ${1}_inline "\"$2\""
 855     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 856 }
 857
 858 check_yasm(){
 859     log check_yasm "$@"
 860     echo "$1" > $TMPS
 861     log_file $TMPS
 862     shift 1
 863     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 864 }
 865
 866 ld_o(){
 867     eval printf '%s\\n' $LD_O
 868 }
 869
 870 check_ld(){
 871     log check_ld "$@"
 872     type=$1
 873     shift 1
 874     flags=$(filter_out '-l*|*.so' $@)
 875     libs=$(filter '-l*|*.so' $@)
 876     check_$type $($cflags_filter $flags) || return
 877     flags=$($ldflags_filter $flags)
 878     libs=$($ldflags_filter $libs)
 879     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 880 }
 881
 882 print_include(){
 883     hdr=$1
 884     test "${hdr%.h}" = "${hdr}" &&
 885         echo "#include $hdr"    ||
 886         echo "#include <$hdr>"
 887 }
 888
 889 check_code(){
 890     log check_code "$@"
 891     check=$1
 892     headers=$2
 893     code=$3
 894     shift 3
 895     {
 896         for hdr in $headers; do
 897             print_include $hdr
 898         done
 899         echo "int main(void) { $code; return 0; }"
 900     } | check_$check "$@"
 901 }
 902
 903 check_cppflags(){
 904     log check_cppflags "$@"
 905     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 906 int x;
 907 EOF
 908 }
 909
 910 test_cflags(){
 911     log test_cflags "$@"
 912     set -- $($cflags_filter "$@")
 913     check_cc "$@" <<EOF
 914 int x;
 915 EOF
 916 }
 917
 918 check_cflags(){
 919     log check_cflags "$@"
 920     test_cflags "$@" && add_cflags "$@"
 921 }
 922
 923 check_cxxflags(){
 924     log check_cxxflags "$@"
 925     set -- $($cflags_filter "$@")
 926     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 927 int x;
 928 EOF
 929 }
 930
 931 test_ldflags(){
 932     log test_ldflags "$@"
 933     check_ld "cc" "$@" <<EOF
 934 int main(void){ return 0; }
 935 EOF
 936 }
 937
 938 check_ldflags(){
 939     log check_ldflags "$@"
 940     test_ldflags "$@" && add_ldflags "$@"
 941 }
 942
 943 test_stripflags(){
 944     log test_stripflags "$@"
 945     # call check_cc to get a fresh TMPO
 946     check_cc <<EOF
 947 int main(void) { return 0; }
 948 EOF
 949     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 950 }
 951
 952 check_stripflags(){
 953     log check_stripflags "$@"
 954     test_stripflags "$@" && add_stripflags "$@"
 955 }
 956
 957 check_header(){
 958     log check_header "$@"
 959     header=$1
 960     shift
 961     disable_safe $header
 962     check_cpp "$@" <<EOF && enable_safe $header
 963 #include <$header>
 964 int x;
 965 EOF
 966 }
 967
 968 check_header_oc(){
 969     log check_header_oc "$@"
 970     rm -f -- "$TMPO"
 971     header=$1
 972     shift
 973     disable_safe $header
 974     {
 975        echo "#include <$header>"
 976        echo "int main(void) { return 0; }"
 977     } | check_oc && check_stat "$TMPO" && enable_safe $headers
 978 }
 979
 980 check_func(){
 981     log check_func "$@"
 982     func=$1
 983     shift
 984     disable $func
 985     check_ld "cc" "$@" <<EOF && enable $func
 986 extern int $func();
 987 int main(void){ $func(); }
 988 EOF
 989 }
 990
 991 check_mathfunc(){
 992     log check_mathfunc "$@"
 993     func=$1
 994     narg=$2
 995     shift 2
 996     test $narg = 2 && args="f, g" || args="f"
 997     disable $func
 998     check_ld "cc" "$@" <<EOF && enable $func
 999 #include <math.h>
1000 float foo(float f, float g) { return $func($args); }
1001 int main(void){ return (int) foo; }
1002 EOF
1003 }
1004
1005 check_func_headers(){
1006     log check_func_headers "$@"
1007     headers=$1
1008     funcs=$2
1009     shift 2
1010     {
1011         for hdr in $headers; do
1012             print_include $hdr
1013         done
1014         for func in $funcs; do
1015             echo "long check_$func(void) { return (long) $func; }"
1016         done
1017         echo "int main(void) { return 0; }"
1018     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1019 }
1020
1021 check_class_headers_cpp(){
1022     log check_class_headers_cpp "$@"
1023     headers=$1
1024     classes=$2
1025     shift 2
1026     {
1027         for hdr in $headers; do
1028             echo "#include <$hdr>"
1029         done
1030         echo "int main(void) { "
1031         i=1
1032         for class in $classes; do
1033             echo "$class obj$i;"
1034             i=$(expr $i + 1)
1035         done
1036         echo "return 0; }"
1037     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1038 }
1039
1040 check_cpp_condition(){
1041     log check_cpp_condition "$@"
1042     header=$1
1043     condition=$2
1044     shift 2
1045     check_cpp "$@" <<EOF
1046 #include <$header>
1047 #if !($condition)
1048 #error "unsatisfied condition: $condition"
1049 #endif
1050 EOF
1051 }
1052
1053 check_lib(){
1054     log check_lib "$@"
1055     header="$1"
1056     func="$2"
1057     shift 2
1058     check_header $header && check_func $func "$@" && add_extralibs "$@"
1059 }
1060
1061 check_lib2(){
1062     log check_lib2 "$@"
1063     headers="$1"
1064     funcs="$2"
1065     shift 2
1066     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1067 }
1068
1069 check_lib_cpp(){
1070     log check_lib_cpp "$@"
1071     headers="$1"
1072     classes="$2"
1073     shift 2
1074     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1075 }
1076
1077 check_pkg_config(){
1078     log check_pkg_config "$@"
1079     pkgandversion="$1"
1080     pkg="${1%% *}"
1081     headers="$2"
1082     funcs="$3"
1083     shift 3
1084     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1085     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1086     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1087     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1088         set_safe ${pkg}_cflags $pkg_cflags   &&
1089         set_safe ${pkg}_libs   $pkg_libs
1090 }
1091
1092 check_exec(){
1093     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1094 }
1095
1096 check_exec_crash(){
1097     code=$(cat)
1098
1099     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1100     # are safe but may not be available everywhere.  Thus we use
1101     # raise(SIGTERM) instead.  The check is run in a subshell so we
1102     # can redirect the "Terminated" message from the shell.  SIGBUS
1103     # is not defined by standard C so it is used conditionally.
1104
1105     (check_exec "$@") >> $logfile 2>&1 <<EOF
1106 #include <signal.h>
1107 static void sighandler(int sig){
1108     raise(SIGTERM);
1109 }
1110 int foo(void){
1111     $code
1112 }
1113 int (*func_ptr)(void) = foo;
1114 int main(void){
1115     signal(SIGILL, sighandler);
1116     signal(SIGFPE, sighandler);
1117     signal(SIGSEGV, sighandler);
1118 #ifdef SIGBUS
1119     signal(SIGBUS, sighandler);
1120 #endif
1121     return func_ptr();
1122 }
1123 EOF
1124 }
1125
1126 check_type(){
1127     log check_type "$@"
1128     headers=$1
1129     type=$2
1130     shift 2
1131     disable_safe "$type"
1132     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1133 }
1134
1135 check_struct(){
1136     log check_struct "$@"
1137     headers=$1
1138     struct=$2
1139     member=$3
1140     shift 3
1141     disable_safe "${struct}_${member}"
1142     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1143         enable_safe "${struct}_${member}"
1144 }
1145
1146 check_builtin(){
1147     log check_builtin "$@"
1148     name=$1
1149     headers=$2
1150     builtin=$3
1151     shift 3
1152     disable "$name"
1153     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1154 }
1155
1156 check_compile_assert(){
1157     log check_compile_assert "$@"
1158     name=$1
1159     headers=$2
1160     condition=$3
1161     shift 3
1162     disable "$name"
1163     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1164 }
1165
1166 require(){
1167     name="$1"
1168     header="$2"
1169     func="$3"
1170     shift 3
1171     check_lib $header $func "$@" || die "ERROR: $name not found"
1172 }
1173
1174 require2(){
1175     name="$1"
1176     headers="$2"
1177     func="$3"
1178     shift 3
1179     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1180 }
1181
1182 require_cpp(){
1183     name="$1"
1184     headers="$2"
1185     classes="$3"
1186     shift 3
1187     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1188 }
1189
1190 require_pkg_config(){
1191     pkg="$1"
1192     check_pkg_config "$@" || die "ERROR: $pkg not found"
1193     add_cflags    $(get_safe ${pkg}_cflags)
1194     add_extralibs $(get_safe ${pkg}_libs)
1195 }
1196
1197 require_libfreetype(){
1198     log require_libfreetype "$@"
1199     pkg="freetype2"
1200     check_cmd $pkg_config --exists --print-errors $pkg \
1201       || die "ERROR: $pkg not found"
1202     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1203     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1204     {
1205         echo "#include <ft2build.h>"
1206         echo "#include FT_FREETYPE_H"
1207         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1208         echo "int main(void) { return 0; }"
1209     } | check_ld "cc" $pkg_cflags $pkg_libs \
1210       && set_safe ${pkg}_cflags $pkg_cflags \
1211       && set_safe ${pkg}_libs   $pkg_libs \
1212       || die "ERROR: $pkg not found"
1213     add_cflags    $(get_safe ${pkg}_cflags)
1214     add_extralibs $(get_safe ${pkg}_libs)
1215 }
1216
1217 hostcc_e(){
1218     eval printf '%s\\n' $HOSTCC_E
1219 }
1220
1221 hostcc_o(){
1222     eval printf '%s\\n' $HOSTCC_O
1223 }
1224
1225 check_host_cc(){
1226     log check_host_cc "$@"
1227     cat > $TMPC
1228     log_file $TMPC
1229     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1230 }
1231
1232 check_host_cpp(){
1233     log check_host_cpp "$@"
1234     cat > $TMPC
1235     log_file $TMPC
1236     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1237 }
1238
1239 check_host_cppflags(){
1240     log check_host_cppflags "$@"
1241     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1242 int x;
1243 EOF
1244 }
1245
1246 check_host_cflags(){
1247     log check_host_cflags "$@"
1248     set -- $($host_cflags_filter "$@")
1249     check_host_cc "$@" <<EOF && append host_cflags "$@"
1250 int x;
1251 EOF
1252 }
1253
1254 check_host_cpp_condition(){
1255     log check_host_cpp_condition "$@"
1256     header=$1
1257     condition=$2
1258     shift 2
1259     check_host_cpp "$@" <<EOF
1260 #include <$header>
1261 #if !($condition)
1262 #error "unsatisfied condition: $condition"
1263 #endif
1264 EOF
1265 }
1266
1267 apply(){
1268     file=$1
1269     shift
1270     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1271 }
1272
1273 cp_if_changed(){
1274     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1275     mkdir -p "$(dirname $2)"
1276     $cp_f "$1" "$2"
1277 }
1278
1279 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1280 # system-dependent things.
1281
1282 COMPONENT_LIST="
1283     bsfs
1284     decoders
1285     demuxers
1286     encoders
1287     filters
1288     hwaccels
1289     indevs
1290     muxers
1291     outdevs
1292     parsers
1293     protocols
1294 "
1295
1296 EXAMPLE_LIST="
1297     avio_reading_example
1298     decoding_encoding_example
1299     demuxing_decoding_example
1300     filter_audio_example
1301     filtering_audio_example
1302     filtering_video_example
1303     metadata_example
1304     muxing_example
1305     remuxing_example
1306     resampling_audio_example
1307     scaling_video_example
1308     transcode_aac_example
1309     transcoding_example
1310 "
1311
1312 EXTERNAL_LIBRARY_LIST="
1313     avisynth
1314     bzlib
1315     crystalhd
1316     decklink
1317     frei0r
1318     gnutls
1319     iconv
1320     ladspa
1321     libaacplus
1322     libass
1323     libbluray
1324     libbs2b
1325     libcaca
1326     libcdio
1327     libcelt
1328     libdc1394
1329     libfaac
1330     libfdk_aac
1331     libflite
1332     libfontconfig
1333     libfreetype
1334     libgme
1335     libgsm
1336     libiec61883
1337     libilbc
1338     libmodplug
1339     libmp3lame
1340     libnut
1341     libopencore_amrnb
1342     libopencore_amrwb
1343     libopencv
1344     libopenjpeg
1345     libopus
1346     libpulse
1347     libquvi
1348     librtmp
1349     libschroedinger
1350     libshine
1351     libsoxr
1352     libspeex
1353     libssh
1354     libstagefright_h264
1355     libtheora
1356     libtwolame
1357     libutvideo
1358     libv4l2
1359     libvidstab
1360     libvo_aacenc
1361     libvo_amrwbenc
1362     libvorbis
1363     libvpx
1364     libwavpack
1365     libwebp
1366     libx264
1367     libx265
1368     libxavs
1369     libxvid
1370     libzmq
1371     libzvbi
1372     openal
1373     opencl
1374     opengl
1375     openssl
1376     x11grab
1377     xlib
1378     zlib
1379 "
1380
1381 DOCUMENT_LIST="
1382     doc
1383     htmlpages
1384     manpages
1385     podpages
1386     txtpages
1387 "
1388
1389 FEATURE_LIST="
1390     ftrapv
1391     gray
1392     hardcoded_tables
1393     runtime_cpudetect
1394     safe_bitstream_reader
1395     shared
1396     small
1397     sram
1398     static
1399     swscale_alpha
1400 "
1401
1402 HWACCEL_LIST="
1403     dxva2
1404     vaapi
1405     vda
1406     vdpau
1407     xvmc
1408 "
1409
1410 LIBRARY_LIST="
1411     avcodec
1412     avdevice
1413     avfilter
1414     avformat
1415     avresample
1416     avutil
1417     postproc
1418     swresample
1419     swscale
1420 "
1421
1422 LICENSE_LIST="
1423     gpl
1424     nonfree
1425     version3
1426 "
1427
1428 PROGRAM_LIST="
1429     ffplay
1430     ffprobe
1431     ffserver
1432     ffmpeg
1433 "
1434
1435 SUBSYSTEM_LIST="
1436     dct
1437     dwt
1438     error_resilience
1439     fast_unaligned
1440     fft
1441     lsp
1442     lzo
1443     mdct
1444     network
1445     rdft
1446 "
1447
1448 CONFIG_LIST="
1449     $COMPONENT_LIST
1450     $DOCUMENT_LIST
1451     $EXAMPLE_LIST
1452     $EXTERNAL_LIBRARY_LIST
1453     $FEATURE_LIST
1454     $HWACCEL_LIST
1455     $LICENSE_LIST
1456     $LIBRARY_LIST
1457     $PROGRAM_LIST
1458     $SUBSYSTEM_LIST
1459     fontconfig
1460     incompatible_libav_abi
1461     memalign_hack
1462     memory_poisoning
1463     neon_clobber_test
1464     pic
1465     pod2man
1466     raise_major
1467     thumb
1468     xmm_clobber_test
1469 "
1470
1471 THREADS_LIST="
1472     pthreads
1473     os2threads
1474     w32threads
1475 "
1476
1477 ATOMICS_LIST="
1478     atomics_gcc
1479     atomics_suncc
1480     atomics_win32
1481 "
1482
1483 ARCH_LIST="
1484     aarch64
1485     alpha
1486     arm
1487     avr32
1488     avr32_ap
1489     avr32_uc
1490     bfin
1491     ia64
1492     m68k
1493     mips
1494     mips64
1495     parisc
1496     ppc
1497     ppc64
1498     s390
1499     sh4
1500     sparc
1501     sparc64
1502     tilegx
1503     tilepro
1504     tomi
1505     x86
1506     x86_32
1507     x86_64
1508 "
1509
1510 ARCH_EXT_LIST_ARM="
1511     armv5te
1512     armv6
1513     armv6t2
1514     armv8
1515     neon
1516     vfp
1517     vfpv3
1518 "
1519
1520 ARCH_EXT_LIST_MIPS="
1521     mipsfpu
1522     mips32r2
1523     mipsdspr1
1524     mipsdspr2
1525 "
1526
1527 ARCH_EXT_LIST_X86_SIMD="
1528     amd3dnow
1529     amd3dnowext
1530     avx
1531     avx2
1532     fma3
1533     fma4
1534     mmx
1535     mmxext
1536     sse
1537     sse2
1538     sse3
1539     sse4
1540     sse42
1541     ssse3
1542     xop
1543 "
1544
1545 ARCH_EXT_LIST_PPC="
1546     altivec
1547     dcbzl
1548     ldbrx
1549     ppc4xx
1550     vsx
1551 "
1552
1553 ARCH_EXT_LIST_X86="
1554     $ARCH_EXT_LIST_X86_SIMD
1555     cpunop
1556     i686
1557 "
1558
1559 ARCH_EXT_LIST="
1560     $ARCH_EXT_LIST_ARM
1561     $ARCH_EXT_LIST_PPC
1562     $ARCH_EXT_LIST_X86
1563     $ARCH_EXT_LIST_MIPS
1564     loongson
1565 "
1566
1567 ARCH_FEATURES="
1568     aligned_stack
1569     fast_64bit
1570     fast_clz
1571     fast_cmov
1572     local_aligned_8
1573     local_aligned_16
1574     local_aligned_32
1575 "
1576
1577 BUILTIN_LIST="
1578     atomic_cas_ptr
1579     machine_rw_barrier
1580     MemoryBarrier
1581     mm_empty
1582     rdtsc
1583     sarestart
1584     sync_val_compare_and_swap
1585 "
1586 HAVE_LIST_CMDLINE="
1587     inline_asm
1588     symver
1589     yasm
1590 "
1591
1592 HAVE_LIST_PUB="
1593     bigendian
1594     fast_unaligned
1595     incompatible_libav_abi
1596 "
1597
1598 HEADERS_LIST="
1599     alsa_asoundlib_h
1600     altivec_h
1601     arpa_inet_h
1602     asm_types_h
1603     cdio_paranoia_h
1604     cdio_paranoia_paranoia_h
1605     CL_cl_h
1606     dev_bktr_ioctl_bt848_h
1607     dev_bktr_ioctl_meteor_h
1608     dev_ic_bt8xx_h
1609     dev_video_bktr_ioctl_bt848_h
1610     dev_video_meteor_ioctl_meteor_h
1611     direct_h
1612     dlfcn_h
1613     dxva_h
1614     ES2_gl_h
1615     gsm_h
1616     io_h
1617     mach_mach_time_h
1618     machine_ioctl_bt848_h
1619     machine_ioctl_meteor_h
1620     malloc_h
1621     openjpeg_1_5_openjpeg_h
1622     OpenGL_gl3_h
1623     poll_h
1624     sndio_h
1625     soundcard_h
1626     sys_mman_h
1627     sys_param_h
1628     sys_resource_h
1629     sys_select_h
1630     sys_soundcard_h
1631     sys_time_h
1632     sys_un_h
1633     sys_videoio_h
1634     termios_h
1635     unistd_h
1636     windows_h
1637     winsock2_h
1638 "
1639
1640 MATH_FUNCS="
1641     atanf
1642     atan2f
1643     cbrt
1644     cbrtf
1645     cosf
1646     exp2
1647     exp2f
1648     expf
1649     fminf
1650     isinf
1651     isnan
1652     ldexpf
1653     llrint
1654     llrintf
1655     log2
1656     log2f
1657     log10f
1658     lrint
1659     lrintf
1660     powf
1661     rint
1662     round
1663     roundf
1664     sinf
1665     trunc
1666     truncf
1667 "
1668
1669 SYSTEM_FUNCS="
1670     access
1671     aligned_malloc
1672     clock_gettime
1673     closesocket
1674     CommandLineToArgvW
1675     CoTaskMemFree
1676     CryptGenRandom
1677     dlopen
1678     fcntl
1679     flt_lim
1680     fork
1681     getaddrinfo
1682     gethrtime
1683     getopt
1684     GetProcessAffinityMask
1685     GetProcessMemoryInfo
1686     GetProcessTimes
1687     getrusage
1688     getservbyport
1689     GetSystemTimeAsFileTime
1690     gettimeofday
1691     glob
1692     glXGetProcAddress
1693     inet_aton
1694     isatty
1695     jack_port_get_latency_range
1696     kbhit
1697     localtime_r
1698     lzo1x_999_compress
1699     mach_absolute_time
1700     MapViewOfFile
1701     memalign
1702     mkstemp
1703     mmap
1704     mprotect
1705     nanosleep
1706     PeekNamedPipe
1707     posix_memalign
1708     pthread_cancel
1709     sched_getaffinity
1710     SetConsoleTextAttribute
1711     setmode
1712     setrlimit
1713     Sleep
1714     strerror_r
1715     sysconf
1716     sysctl
1717     usleep
1718     VirtualAlloc
1719     wglGetProcAddress
1720 "
1721
1722 TOOLCHAIN_FEATURES="
1723     as_dn_directive
1724     as_func
1725     asm_mod_q
1726     attribute_may_alias
1727     attribute_packed
1728     ebp_available
1729     ebx_available
1730     gnu_as
1731     gnu_windres
1732     ibm_asm
1733     inline_asm_labels
1734     inline_asm_nonlocal_labels
1735     inline_asm_direct_symbol_refs
1736     pragma_deprecated
1737     rsync_contimeout
1738     symver_asm_label
1739     symver_gnu_asm
1740     vfp_args
1741     xform_asm
1742     xmm_clobbers
1743 "
1744
1745 TYPES_LIST="
1746     socklen_t
1747     struct_addrinfo
1748     struct_group_source_req
1749     struct_ip_mreq_source
1750     struct_ipv6_mreq
1751     struct_pollfd
1752     struct_rusage_ru_maxrss
1753     struct_sctp_event_subscribe
1754     struct_sockaddr_in6
1755     struct_sockaddr_sa_len
1756     struct_sockaddr_storage
1757     struct_stat_st_mtim_tv_nsec
1758     struct_v4l2_frmivalenum_discrete
1759 "
1760
1761 HAVE_LIST="
1762     $ARCH_EXT_LIST
1763     $(add_suffix _external $ARCH_EXT_LIST)
1764     $(add_suffix _inline   $ARCH_EXT_LIST)
1765     $ARCH_FEATURES
1766     $ATOMICS_LIST
1767     $BUILTIN_LIST
1768     $HAVE_LIST_CMDLINE
1769     $HAVE_LIST_PUB
1770     $HEADERS_LIST
1771     $MATH_FUNCS
1772     $SYSTEM_FUNCS
1773     $THREADS_LIST
1774     $TOOLCHAIN_FEATURES
1775     $TYPES_LIST
1776     atomics_native
1777     dos_paths
1778     dxva2api_cobj
1779     dxva2_lib
1780     libc_msvcrt
1781     libdc1394_1
1782     libdc1394_2
1783     makeinfo
1784     perl
1785     pod2man
1786     sdl
1787     texi2html
1788     threads
1789     vdpau_x11
1790     xlib
1791 "
1792
1793 # options emitted with CONFIG_ prefix but not available on the command line
1794 CONFIG_EXTRA="
1795     aandcttables
1796     ac3dsp
1797     audio_frame_queue
1798     blockdsp
1799     cabac
1800     dsputil
1801     exif
1802     frame_thread_encoder
1803     gcrypt
1804     golomb
1805     gplv3
1806     h263dsp
1807     h264chroma
1808     h264dsp
1809     h264pred
1810     h264qpel
1811     hpeldsp
1812     huffman
1813     huffyuvdsp
1814     huffyuvencdsp
1815     intrax8
1816     lgplv3
1817     llauddsp
1818     llviddsp
1819     lpc
1820     mpegaudio
1821     mpegaudiodsp
1822     mpegvideo
1823     mpegvideoenc
1824     nettle
1825     qpeldsp
1826     rangecoder
1827     riffdec
1828     riffenc
1829     rtpdec
1830     rtpenc_chain
1831     sinewin
1832     tpeldsp
1833     videodsp
1834     vp3dsp
1835 "
1836
1837 CMDLINE_SELECT="
1838     $ARCH_EXT_LIST
1839     $CONFIG_LIST
1840     $HAVE_LIST_CMDLINE
1841     $THREADS_LIST
1842     asm
1843     cross_compile
1844     debug
1845     extra_warnings
1846     logging
1847     lto
1848     optimizations
1849     rpath
1850     stripping
1851 "
1852
1853 PATHS_LIST="
1854     bindir
1855     datadir
1856     docdir
1857     incdir
1858     libdir
1859     mandir
1860     prefix
1861     shlibdir
1862 "
1863
1864 CMDLINE_SET="
1865     $PATHS_LIST
1866     ar
1867     arch
1868     as
1869     assert_level
1870     build_suffix
1871     cc
1872     cpu
1873     cross_prefix
1874     cxx
1875     dep_cc
1876     extra_version
1877     gas
1878     host_cc
1879     host_cflags
1880     host_ld
1881     host_ldflags
1882     host_libs
1883     host_os
1884     install
1885     ld
1886     logfile
1887     malloc_prefix
1888     nm
1889     optflags
1890     pkg_config
1891     pkg_config_flags
1892     progs_suffix
1893     random_seed
1894     ranlib
1895     samples
1896     strip
1897     sws_max_filter_size
1898     sysinclude
1899     sysroot
1900     target_exec
1901     target_os
1902     target_path
1903     target_samples
1904     tempprefix
1905     toolchain
1906     valgrind
1907     yasmexe
1908 "
1909
1910 CMDLINE_APPEND="
1911     extra_cflags
1912     extra_cxxflags
1913     host_cppflags
1914 "
1915
1916 # code dependency declarations
1917
1918 # architecture extensions
1919
1920 armv5te_deps="arm"
1921 armv6_deps="arm"
1922 armv6t2_deps="arm"
1923 armv8_deps="aarch64"
1924 neon_deps_any="aarch64 arm"
1925 vfp_deps_any="aarch64 arm"
1926 vfpv3_deps="vfp"
1927
1928 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1929
1930 mipsfpu_deps="mips"
1931 mips32r2_deps="mips"
1932 mipsdspr1_deps="mips"
1933 mipsdspr2_deps="mips"
1934
1935 altivec_deps="ppc"
1936 ppc4xx_deps="ppc"
1937 vsx_deps="ppc"
1938
1939 cpunop_deps="i686"
1940 x86_64_select="i686"
1941 x86_64_suggest="fast_cmov"
1942
1943 amd3dnow_deps="mmx"
1944 amd3dnowext_deps="amd3dnow"
1945 i686_deps="x86"
1946 mmx_deps="x86"
1947 mmxext_deps="mmx"
1948 sse_deps="mmxext"
1949 sse2_deps="sse"
1950 sse3_deps="sse2"
1951 ssse3_deps="sse3"
1952 sse4_deps="ssse3"
1953 sse42_deps="sse4"
1954 avx_deps="sse42"
1955 xop_deps="avx"
1956 fma3_deps="avx"
1957 fma4_deps="avx"
1958 avx2_deps="avx"
1959
1960 mmx_external_deps="yasm"
1961 mmx_inline_deps="inline_asm"
1962 mmx_suggest="mmx_external mmx_inline"
1963
1964 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1965     eval dep=\$${ext}_deps
1966     eval ${ext}_external_deps='"${dep}_external"'
1967     eval ${ext}_inline_deps='"${dep}_inline"'
1968     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1969 done
1970
1971 aligned_stack_if_any="aarch64 ppc x86"
1972 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1973 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1974 fast_unaligned_if_any="aarch64 ppc x86"
1975
1976 need_memalign="altivec neon sse"
1977
1978 # system capabilities
1979
1980 symver_if_any="symver_asm_label symver_gnu_asm"
1981
1982 # threading support
1983 atomics_gcc_if="sync_val_compare_and_swap"
1984 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1985 atomics_win32_if="MemoryBarrier"
1986 atomics_native_if_any="$ATOMICS_LIST"
1987 w32threads_deps="atomics_native"
1988 threads_if_any="$THREADS_LIST"
1989
1990 # subsystems
1991 dct_select="rdft"
1992 error_resilience_select="dsputil"
1993 frame_thread_encoder_deps="encoders threads"
1994 mdct_select="fft"
1995 rdft_select="fft"
1996 mpegaudio_select="mpegaudiodsp"
1997 mpegaudiodsp_select="dct"
1998 mpegvideo_select="blockdsp dsputil h264chroma hpeldsp videodsp"
1999 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
2000
2001 # decoders / encoders
2002 aac_decoder_select="mdct sinewin"
2003 aac_encoder_select="audio_frame_queue mdct sinewin"
2004 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2005 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
2006 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
2007 ac3_encoder_select="mdct ac3dsp dsputil"
2008 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
2009 aic_decoder_select="dsputil golomb"
2010 alac_encoder_select="lpc"
2011 als_decoder_select="dsputil"
2012 amrnb_decoder_select="lsp"
2013 amrwb_decoder_select="lsp"
2014 amv_decoder_select="sp5x_decoder exif"
2015 amv_encoder_select="aandcttables"
2016 ape_decoder_select="dsputil llauddsp"
2017 asv1_decoder_select="blockdsp dsputil"
2018 asv1_encoder_select="dsputil"
2019 asv2_decoder_select="blockdsp dsputil"
2020 asv2_encoder_select="dsputil"
2021 atrac1_decoder_select="mdct sinewin"
2022 atrac3_decoder_select="mdct"
2023 atrac3p_decoder_select="mdct sinewin"
2024 avrn_decoder_select="exif"
2025 bink_decoder_select="blockdsp hpeldsp"
2026 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2027 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2028 cavs_decoder_select="blockdsp dsputil golomb h264chroma qpeldsp videodsp"
2029 cllc_decoder_select="dsputil"
2030 comfortnoise_encoder_select="lpc"
2031 cook_decoder_select="dsputil mdct sinewin"
2032 cscd_decoder_select="lzo"
2033 cscd_decoder_suggest="zlib"
2034 dca_decoder_select="mdct"
2035 dirac_decoder_select="dsputil dwt golomb videodsp"
2036 dnxhd_decoder_select="blockdsp dsputil"
2037 dnxhd_encoder_select="aandcttables blockdsp dsputil mpegvideoenc"
2038 dvvideo_decoder_select="dsputil"
2039 dvvideo_encoder_select="dsputil"
2040 dxa_decoder_select="zlib"
2041 eac3_decoder_select="ac3_decoder"
2042 eac3_encoder_select="ac3_encoder"
2043 eamad_decoder_select="aandcttables blockdsp dsputil mpegvideo"
2044 eatgq_decoder_select="aandcttables"
2045 eatqi_decoder_select="aandcttables blockdsp dsputil error_resilience mpegvideo"
2046 exr_decoder_select="zlib"
2047 ffv1_decoder_select="golomb rangecoder"
2048 ffv1_encoder_select="rangecoder"
2049 ffvhuff_decoder_select="huffyuv_decoder"
2050 ffvhuff_encoder_select="huffyuv_encoder"
2051 fic_decoder_select="golomb"
2052 flac_decoder_select="golomb"
2053 flac_encoder_select="dsputil golomb lpc"
2054 flashsv_decoder_select="zlib"
2055 flashsv_encoder_select="zlib"
2056 flashsv2_encoder_select="zlib"
2057 flashsv2_decoder_select="zlib"
2058 flv_decoder_select="h263_decoder"
2059 flv_encoder_select="h263_encoder"
2060 fourxm_decoder_select="blockdsp dsputil"
2061 fraps_decoder_select="dsputil huffman"
2062 g2m_decoder_select="blockdsp dsputil zlib"
2063 g729_decoder_select="dsputil"
2064 h261_decoder_select="error_resilience mpegvideo"
2065 h261_encoder_select="aandcttables mpegvideoenc"
2066 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo qpeldsp"
2067 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2068 h263i_decoder_select="h263_decoder"
2069 h263p_encoder_select="h263_encoder"
2070 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2071 h264_decoder_suggest="error_resilience"
2072 hevc_decoder_select="cabac dsputil golomb videodsp"
2073 huffyuv_decoder_select="dsputil huffyuvdsp llviddsp"
2074 huffyuv_encoder_select="dsputil huffman huffyuvencdsp llviddsp"
2075 iac_decoder_select="imc_decoder"
2076 imc_decoder_select="dsputil fft mdct sinewin"
2077 indeo3_decoder_select="hpeldsp"
2078 interplay_video_decoder_select="hpeldsp"
2079 jpegls_decoder_select="golomb mjpeg_decoder"
2080 jpegls_encoder_select="golomb"
2081 jv_decoder_select="blockdsp"
2082 lagarith_decoder_select="huffyuvdsp"
2083 ljpeg_encoder_select="aandcttables mpegvideoenc"
2084 loco_decoder_select="golomb"
2085 mdec_decoder_select="blockdsp dsputil error_resilience mpegvideo"
2086 metasound_decoder_select="lsp mdct sinewin"
2087 mimic_decoder_select="blockdsp dsputil hpeldsp"
2088 mjpeg_decoder_select="blockdsp dsputil hpeldsp exif"
2089 mjpeg_encoder_select="aandcttables mpegvideoenc"
2090 mjpegb_decoder_select="mjpeg_decoder"
2091 mlp_decoder_select="mlp_parser"
2092 motionpixels_decoder_select="dsputil"
2093 mp1_decoder_select="mpegaudio"
2094 mp1float_decoder_select="mpegaudio"
2095 mp2_decoder_select="mpegaudio"
2096 mp2float_decoder_select="mpegaudio"
2097 mp3_decoder_select="mpegaudio"
2098 mp3adu_decoder_select="mpegaudio"
2099 mp3adufloat_decoder_select="mpegaudio"
2100 mp3float_decoder_select="mpegaudio"
2101 mp3on4_decoder_select="mpegaudio"
2102 mp3on4float_decoder_select="mpegaudio"
2103 mpc7_decoder_select="dsputil mpegaudiodsp"
2104 mpc8_decoder_select="mpegaudiodsp"
2105 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2106 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2107 mpeg1video_decoder_select="error_resilience mpegvideo"
2108 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2109 mpeg2video_decoder_select="error_resilience mpegvideo"
2110 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2111 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2112 mpeg4_encoder_select="h263_encoder"
2113 msmpeg4v1_decoder_select="h263_decoder"
2114 msmpeg4v2_decoder_select="h263_decoder"
2115 msmpeg4v2_encoder_select="h263_encoder"
2116 msmpeg4v3_decoder_select="h263_decoder"
2117 msmpeg4v3_encoder_select="h263_encoder"
2118 mss2_decoder_select="error_resilience qpeldsp vc1_decoder"
2119 mxpeg_decoder_select="mjpeg_decoder"
2120 nellymoser_decoder_select="mdct sinewin"
2121 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2122 nuv_decoder_select="dsputil lzo"
2123 on2avc_decoder_select="mdct"
2124 opus_decoder_deps="swresample"
2125 png_decoder_select="zlib"
2126 png_encoder_select="huffyuvencdsp zlib"
2127 prores_decoder_select="blockdsp dsputil"
2128 prores_encoder_select="dsputil"
2129 qcelp_decoder_select="lsp"
2130 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2131 ra_144_encoder_select="audio_frame_queue lpc"
2132 ralf_decoder_select="golomb"
2133 rawvideo_decoder_select="dsputil"
2134 rtjpeg_decoder_select="dsputil"
2135 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2136 rv10_encoder_select="h263_encoder"
2137 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2138 rv20_encoder_select="h263_encoder"
2139 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2140 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2141 shorten_decoder_select="golomb"
2142 sipr_decoder_select="lsp"
2143 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2144 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2145 sonic_decoder_select="golomb rangecoder"
2146 sonic_encoder_select="golomb rangecoder"
2147 sonic_ls_encoder_select="golomb rangecoder"
2148 sp5x_decoder_select="mjpeg_decoder"
2149 svq1_decoder_select="hpeldsp"
2150 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2151 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2152 svq3_decoder_suggest="zlib"
2153 tak_decoder_select="dsputil"
2154 theora_decoder_select="vp3_decoder"
2155 thp_decoder_select="mjpeg_decoder"
2156 tiff_decoder_suggest="zlib"
2157 tiff_encoder_suggest="zlib"
2158 truehd_decoder_select="mlp_parser"
2159 truemotion2_decoder_select="dsputil"
2160 truespeech_decoder_select="dsputil"
2161 tscc_decoder_select="zlib"
2162 twinvq_decoder_select="mdct lsp sinewin"
2163 utvideo_decoder_select="dsputil"
2164 utvideo_encoder_select="dsputil huffman huffyuvencdsp"
2165 vble_decoder_select="huffyuvdsp"
2166 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 qpeldsp"
2167 vc1image_decoder_select="vc1_decoder"
2168 vorbis_decoder_select="mdct"
2169 vorbis_encoder_select="mdct"
2170 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2171 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2172 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2173 vp6a_decoder_select="vp6_decoder"
2174 vp6f_decoder_select="vp6_decoder"
2175 vp7_decoder_select="h264pred videodsp"
2176 vp8_decoder_select="h264pred videodsp"
2177 vp9_decoder_select="videodsp vp9_parser"
2178 webp_decoder_select="vp8_decoder"
2179 wmalossless_decoder_select="llauddsp"
2180 wmapro_decoder_select="mdct sinewin"
2181 wmav1_decoder_select="mdct sinewin"
2182 wmav1_encoder_select="mdct sinewin"
2183 wmav2_decoder_select="mdct sinewin"
2184 wmav2_encoder_select="mdct sinewin"
2185 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2186 wmv1_decoder_select="h263_decoder"
2187 wmv1_encoder_select="h263_encoder"
2188 wmv2_decoder_select="blockdsp h263_decoder intrax8 videodsp"
2189 wmv2_encoder_select="h263_encoder"
2190 wmv3_decoder_select="vc1_decoder"
2191 wmv3image_decoder_select="wmv3_decoder"
2192 zerocodec_decoder_select="zlib"
2193 zlib_decoder_select="zlib"
2194 zlib_encoder_select="zlib"
2195 zmbv_decoder_select="zlib"
2196 zmbv_encoder_select="zlib"
2197
2198 # hardware accelerators
2199 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2200 dxva2_deps="dxva2api_h"
2201 vaapi_deps="va_va_h"
2202 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2203 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2204 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2205 xvmc_deps="X11_extensions_XvMClib_h"
2206
2207 h263_vaapi_hwaccel_deps="vaapi"
2208 h263_vaapi_hwaccel_select="h263_decoder"
2209 h263_vdpau_hwaccel_deps="vdpau"
2210 h263_vdpau_hwaccel_select="h263_decoder"
2211 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2212 h264_dxva2_hwaccel_deps="dxva2"
2213 h264_dxva2_hwaccel_select="h264_decoder"
2214 h264_vaapi_hwaccel_deps="vaapi"
2215 h264_vaapi_hwaccel_select="h264_decoder"
2216 h264_vda_decoder_deps="vda"
2217 h264_vda_decoder_select="h264_decoder"
2218 h264_vda_hwaccel_deps="vda"
2219 h264_vda_hwaccel_select="h264_decoder"
2220 h264_vda_old_hwaccel_deps="vda"
2221 h264_vda_old_hwaccel_select="h264_decoder"
2222 h264_vdpau_decoder_deps="vdpau"
2223 h264_vdpau_decoder_select="h264_decoder"
2224 h264_vdpau_hwaccel_deps="vdpau"
2225 h264_vdpau_hwaccel_select="h264_decoder"
2226 mpeg_vdpau_decoder_deps="vdpau"
2227 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2228 mpeg_xvmc_hwaccel_deps="xvmc"
2229 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2230 mpeg1_vdpau_decoder_deps="vdpau"
2231 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2232 mpeg1_vdpau_hwaccel_deps="vdpau"
2233 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2234 mpeg1_xvmc_hwaccel_deps="xvmc"
2235 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2236 mpeg2_crystalhd_decoder_select="crystalhd"
2237 mpeg2_dxva2_hwaccel_deps="dxva2"
2238 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2239 mpeg2_vaapi_hwaccel_deps="vaapi"
2240 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2241 mpeg2_vdpau_hwaccel_deps="vdpau"
2242 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2243 mpeg2_xvmc_hwaccel_deps="xvmc"
2244 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2245 mpeg4_crystalhd_decoder_select="crystalhd"
2246 mpeg4_vaapi_hwaccel_deps="vaapi"
2247 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2248 mpeg4_vdpau_decoder_deps="vdpau"
2249 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2250 mpeg4_vdpau_hwaccel_deps="vdpau"
2251 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2252 msmpeg4_crystalhd_decoder_select="crystalhd"
2253 vc1_crystalhd_decoder_select="crystalhd"
2254 vc1_dxva2_hwaccel_deps="dxva2"
2255 vc1_dxva2_hwaccel_select="vc1_decoder"
2256 vc1_vaapi_hwaccel_deps="vaapi"
2257 vc1_vaapi_hwaccel_select="vc1_decoder"
2258 vc1_vdpau_decoder_deps="vdpau"
2259 vc1_vdpau_decoder_select="vc1_decoder"
2260 vc1_vdpau_hwaccel_deps="vdpau"
2261 vc1_vdpau_hwaccel_select="vc1_decoder"
2262 wmv3_crystalhd_decoder_select="crystalhd"
2263 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2264 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2265 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2266 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2267
2268 # parsers
2269 h264_parser_select="h264_decoder"
2270 hevc_parser_select="hevc_decoder"
2271 mpegvideo_parser_select="error_resilience mpegvideo"
2272 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2273 vc1_parser_select="mpegvideo vc1_decoder"
2274
2275 # external libraries
2276 libaacplus_encoder_deps="libaacplus"
2277 libcelt_decoder_deps="libcelt"
2278 libfaac_encoder_deps="libfaac"
2279 libfaac_encoder_select="audio_frame_queue"
2280 libfdk_aac_decoder_deps="libfdk_aac"
2281 libfdk_aac_encoder_deps="libfdk_aac"
2282 libfdk_aac_encoder_select="audio_frame_queue"
2283 libgme_demuxer_deps="libgme"
2284 libgsm_decoder_deps="libgsm"
2285 libgsm_encoder_deps="libgsm"
2286 libgsm_ms_decoder_deps="libgsm"
2287 libgsm_ms_encoder_deps="libgsm"
2288 libilbc_decoder_deps="libilbc"
2289 libilbc_encoder_deps="libilbc"
2290 libmodplug_demuxer_deps="libmodplug"
2291 libmp3lame_encoder_deps="libmp3lame"
2292 libmp3lame_encoder_select="audio_frame_queue"
2293 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2294 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2295 libopencore_amrnb_encoder_select="audio_frame_queue"
2296 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2297 libopenjpeg_decoder_deps="libopenjpeg"
2298 libopenjpeg_encoder_deps="libopenjpeg"
2299 libopus_decoder_deps="libopus"
2300 libopus_encoder_deps="libopus"
2301 libopus_encoder_select="audio_frame_queue"
2302 libquvi_demuxer_deps="libquvi"
2303 libschroedinger_decoder_deps="libschroedinger"
2304 libschroedinger_encoder_deps="libschroedinger"
2305 libshine_encoder_deps="libshine"
2306 libshine_encoder_select="audio_frame_queue"
2307 libspeex_decoder_deps="libspeex"
2308 libspeex_encoder_deps="libspeex"
2309 libspeex_encoder_select="audio_frame_queue"
2310 libstagefright_h264_decoder_deps="libstagefright_h264"
2311 libtheora_encoder_deps="libtheora"
2312 libtwolame_encoder_deps="libtwolame"
2313 libvo_aacenc_encoder_deps="libvo_aacenc"
2314 libvo_aacenc_encoder_select="audio_frame_queue"
2315 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2316 libvorbis_decoder_deps="libvorbis"
2317 libvorbis_encoder_deps="libvorbis"
2318 libvorbis_encoder_select="audio_frame_queue"
2319 libvpx_vp8_decoder_deps="libvpx"
2320 libvpx_vp8_encoder_deps="libvpx"
2321 libvpx_vp9_decoder_deps="libvpx"
2322 libvpx_vp9_encoder_deps="libvpx"
2323 libwavpack_encoder_deps="libwavpack"
2324 libwebp_encoder_deps="libwebp"
2325 libx264_encoder_deps="libx264"
2326 libx264rgb_encoder_deps="libx264"
2327 libx265_encoder_deps="libx265"
2328 libxavs_encoder_deps="libxavs"
2329 libxvid_encoder_deps="libxvid"
2330 libutvideo_decoder_deps="libutvideo"
2331 libutvideo_encoder_deps="libutvideo"
2332 libzvbi_teletext_decoder_deps="libzvbi"
2333
2334 # demuxers / muxers
2335 ac3_demuxer_select="ac3_parser"
2336 asf_demuxer_select="riffdec"
2337 asf_muxer_select="riffenc"
2338 asf_stream_muxer_select="asf_muxer"
2339 avi_demuxer_select="riffdec exif"
2340 avi_muxer_select="riffenc"
2341 avisynth_demuxer_deps="avisynth"
2342 avisynth_demuxer_select="riffdec"
2343 caf_demuxer_select="riffdec"
2344 dirac_demuxer_select="dirac_parser"
2345 dts_demuxer_select="dca_parser"
2346 dtshd_demuxer_select="dca_parser"
2347 dxa_demuxer_select="riffdec"
2348 eac3_demuxer_select="ac3_parser"
2349 f4v_muxer_select="mov_muxer"
2350 flac_demuxer_select="flac_parser"
2351 hds_muxer_select="flv_muxer"
2352 hls_muxer_select="mpegts_muxer"
2353 image2_alias_pix_demuxer_select="image2_demuxer"
2354 image2_brender_pix_demuxer_select="image2_demuxer"
2355 ipod_muxer_select="mov_muxer"
2356 ismv_muxer_select="mov_muxer"
2357 libnut_demuxer_deps="libnut"
2358 libnut_muxer_deps="libnut"
2359 matroska_audio_muxer_select="matroska_muxer"
2360 matroska_demuxer_select="riffdec"
2361 matroska_demuxer_suggest="bzlib lzo zlib"
2362 matroska_muxer_select="riffenc"
2363 mmf_muxer_select="riffenc"
2364 mov_demuxer_select="riffdec"
2365 mov_demuxer_suggest="zlib"
2366 mov_muxer_select="riffenc rtpenc_chain"
2367 mp3_demuxer_select="mpegaudio_parser"
2368 mp4_muxer_select="mov_muxer"
2369 mpegts_muxer_select="adts_muxer latm_muxer"
2370 mpegtsraw_demuxer_select="mpegts_demuxer"
2371 mxf_d10_muxer_select="mxf_muxer"
2372 nut_muxer_select="riffenc"
2373 nuv_demuxer_select="riffdec"
2374 ogg_demuxer_select="golomb"
2375 psp_muxer_select="mov_muxer"
2376 rtp_demuxer_select="sdp_demuxer"
2377 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2378 rtsp_demuxer_select="http_protocol rtpdec"
2379 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2380 sap_demuxer_select="sdp_demuxer"
2381 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2382 sdp_demuxer_select="rtpdec"
2383 smoothstreaming_muxer_select="ismv_muxer"
2384 spdif_muxer_select="aac_parser"
2385 tak_demuxer_select="tak_parser"
2386 tg2_muxer_select="mov_muxer"
2387 tgp_muxer_select="mov_muxer"
2388 vobsub_demuxer_select="mpegps_demuxer"
2389 w64_demuxer_select="wav_demuxer"
2390 w64_muxer_select="wav_muxer"
2391 wav_demuxer_select="riffdec"
2392 wav_muxer_select="riffenc"
2393 webm_muxer_select="riffenc"
2394 wtv_demuxer_select="riffdec"
2395 wtv_muxer_select="riffenc"
2396 xmv_demuxer_select="riffdec"
2397 xwma_demuxer_select="riffdec"
2398
2399 # indevs / outdevs
2400 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2401 alsa_outdev_deps="alsa_asoundlib_h"
2402 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2403 avfoundation_indev_select="avfoundation"
2404 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2405 caca_outdev_deps="libcaca"
2406 decklink_outdev_deps="decklink pthreads"
2407 decklink_outdev_extralibs="-lstdc++"
2408 dshow_indev_deps="IBaseFilter"
2409 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2410 dv1394_indev_deps="dv1394"
2411 dv1394_indev_select="dv_demuxer"
2412 fbdev_indev_deps="linux_fb_h"
2413 fbdev_outdev_deps="linux_fb_h"
2414 gdigrab_indev_deps="CreateDIBSection"
2415 gdigrab_indev_extralibs="-lgdi32"
2416 gdigrab_indev_select="bmp_decoder"
2417 iec61883_indev_deps="libiec61883"
2418 jack_indev_deps="jack_jack_h sem_timedwait"
2419 lavfi_indev_deps="avfilter"
2420 libcdio_indev_deps="libcdio"
2421 libdc1394_indev_deps="libdc1394"
2422 libv4l2_indev_deps="libv4l2"
2423 openal_indev_deps="openal"
2424 opengl_outdev_deps="opengl"
2425 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2426 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2427 pulse_indev_deps="libpulse"
2428 pulse_outdev_deps="libpulse"
2429 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2430 qtkit_indev_select="qtkit"
2431 sdl_outdev_deps="sdl"
2432 sndio_indev_deps="sndio_h"
2433 sndio_outdev_deps="sndio_h"
2434 v4l_indev_deps="linux_videodev_h"
2435 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2436 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2437 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2438 vfwcap_indev_extralibs="-lavicap32"
2439 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2440 xv_outdev_extralibs="-lXv -lX11 -lXext"
2441 x11grab_indev_deps="x11grab"
2442
2443 # protocols
2444 bluray_protocol_deps="libbluray"
2445 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2446 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2447 ffrtmpcrypt_protocol_select="tcp_protocol"
2448 ffrtmphttp_protocol_deps="!librtmp_protocol"
2449 ffrtmphttp_protocol_select="http_protocol"
2450 ftp_protocol_select="tcp_protocol"
2451 gopher_protocol_select="network"
2452 http_protocol_select="tcp_protocol"
2453 httpproxy_protocol_select="tcp_protocol"
2454 https_protocol_select="tls_protocol"
2455 librtmp_protocol_deps="librtmp"
2456 librtmpe_protocol_deps="librtmp"
2457 librtmps_protocol_deps="librtmp"
2458 librtmpt_protocol_deps="librtmp"
2459 librtmpte_protocol_deps="librtmp"
2460 libssh_protocol_deps="libssh"
2461 mmsh_protocol_select="http_protocol"
2462 mmst_protocol_select="network"
2463 rtmp_protocol_deps="!librtmp_protocol"
2464 rtmp_protocol_select="tcp_protocol"
2465 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2466 rtmps_protocol_deps="!librtmp_protocol"
2467 rtmps_protocol_select="tls_protocol"
2468 rtmpt_protocol_select="ffrtmphttp_protocol"
2469 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2470 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2471 rtp_protocol_select="udp_protocol"
2472 sctp_protocol_deps="struct_sctp_event_subscribe"
2473 sctp_protocol_select="network"
2474 srtp_protocol_select="rtp_protocol"
2475 tcp_protocol_select="network"
2476 tls_protocol_deps_any="openssl gnutls"
2477 tls_protocol_select="tcp_protocol"
2478 udp_protocol_select="network"
2479 unix_protocol_deps="sys_un_h"
2480 unix_protocol_select="network"
2481
2482 # filters
2483 aconvert_filter_deps="swresample"
2484 amovie_filter_deps="avcodec avformat"
2485 aresample_filter_deps="swresample"
2486 ass_filter_deps="libass"
2487 asyncts_filter_deps="avresample"
2488 atempo_filter_deps="avcodec"
2489 atempo_filter_select="rdft"
2490 azmq_filter_deps="libzmq"
2491 blackframe_filter_deps="gpl"
2492 boxblur_filter_deps="gpl"
2493 bs2b_filter_deps="libbs2b"
2494 colormatrix_filter_deps="gpl"
2495 cropdetect_filter_deps="gpl"
2496 dctdnoiz_filter_deps="avcodec"
2497 dctdnoiz_filter_select="dct"
2498 delogo_filter_deps="gpl"
2499 deshake_filter_deps="avcodec"
2500 deshake_filter_select="dsputil"
2501 drawtext_filter_deps="libfreetype"
2502 ebur128_filter_deps="gpl"
2503 flite_filter_deps="libflite"
2504 frei0r_filter_deps="frei0r dlopen"
2505 frei0r_filter_extralibs='$ldl'
2506 frei0r_src_filter_deps="frei0r dlopen"
2507 frei0r_src_filter_extralibs='$ldl'
2508 geq_filter_deps="gpl"
2509 histeq_filter_deps="gpl"
2510 hqdn3d_filter_deps="gpl"
2511 interlace_filter_deps="gpl"
2512 kerndeint_filter_deps="gpl"
2513 ladspa_filter_deps="ladspa dlopen"
2514 ladspa_filter_extralibs='$ldl'
2515 mcdeint_filter_deps="avcodec gpl"
2516 movie_filter_deps="avcodec avformat"
2517 mp_filter_deps="gpl avcodec swscale inline_asm"
2518 mpdecimate_filter_deps="gpl avcodec"
2519 mptestsrc_filter_deps="gpl"
2520 negate_filter_deps="lut_filter"
2521 perspective_filter_deps="gpl"
2522 ocv_filter_deps="libopencv"
2523 owdenoise_filter_deps="gpl"
2524 pan_filter_deps="swresample"
2525 phase_filter_deps="gpl"
2526 pp_filter_deps="gpl postproc"
2527 pullup_filter_deps="gpl"
2528 removelogo_filter_deps="avcodec avformat swscale"
2529 resample_filter_deps="avresample"
2530 sab_filter_deps="gpl swscale"
2531 scale_filter_deps="swscale"
2532 smartblur_filter_deps="gpl swscale"
2533 showspectrum_filter_deps="avcodec"
2534 showspectrum_filter_select="rdft"
2535 spp_filter_deps="gpl avcodec"
2536 spp_filter_select="fft"
2537 stereo3d_filter_deps="gpl"
2538 subtitles_filter_deps="avformat avcodec libass"
2539 super2xsai_filter_deps="gpl"
2540 tinterlace_filter_deps="gpl"
2541 vidstabdetect_filter_deps="libvidstab"
2542 vidstabtransform_filter_deps="libvidstab"
2543 pixfmts_super2xsai_test_deps="super2xsai_filter"
2544 tinterlace_merge_test_deps="tinterlace_filter"
2545 tinterlace_pad_test_deps="tinterlace_filter"
2546 zmq_filter_deps="libzmq"
2547 zoompan_filter_deps="swscale"
2548
2549 # examples
2550 avio_reading="avformat avcodec avutil"
2551 avcodec_example_deps="avcodec avutil"
2552 demuxing_decoding_example_deps="avcodec avformat avutil"
2553 filter_audio_example_deps="avfilter avutil"
2554 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2555 filtering_video_example_deps="avfilter avcodec avformat avutil"
2556 metadata_example_deps="avformat avutil"
2557 muxing_example_deps="avcodec avformat avutil swscale"
2558 remuxing_example_deps="avcodec avformat avutil"
2559 resampling_audio_example_deps="avutil swresample"
2560 scaling_video_example_deps="avutil swscale"
2561 transcode_aac_example_deps="avcodec avformat swresample"
2562 transcoding_example_deps="avfilter avcodec avformat avutil"
2563
2564 # libraries, in linking order
2565 avcodec_deps="avutil"
2566 avdevice_deps="avformat avcodec avutil"
2567 avfilter_deps="avutil"
2568 avformat_deps="avcodec avutil"
2569 avresample_deps="avutil"
2570 postproc_deps="avutil gpl"
2571 swresample_deps="avutil"
2572 swscale_deps="avutil"
2573
2574 # programs
2575 ffmpeg_deps="avcodec avfilter avformat swresample"
2576 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2577                null_filter
2578                setpts_filter trim_filter"
2579 ffplay_deps="avcodec avformat swscale swresample sdl"
2580 ffplay_libs='$sdl_libs'
2581 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2582 ffprobe_deps="avcodec avformat"
2583 ffserver_deps="avformat fork sarestart"
2584 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2585
2586 # documentation
2587 podpages_deps="perl"
2588 manpages_deps="perl pod2man"
2589 htmlpages_deps="perl texi2html"
2590 txtpages_deps="perl makeinfo"
2591 doc_deps_any="manpages htmlpages podpages txtpages"
2592
2593 # default parameters
2594
2595 logfile="config.log"
2596
2597 # installation paths
2598 prefix_default="/usr/local"
2599 bindir_default='${prefix}/bin'
2600 datadir_default='${prefix}/share/ffmpeg'
2601 docdir_default='${prefix}/share/doc/ffmpeg'
2602 incdir_default='${prefix}/include'
2603 libdir_default='${prefix}/lib'
2604 mandir_default='${prefix}/share/man'
2605 shlibdir_default="$libdir_default"
2606
2607 # toolchain
2608 ar_default="ar"
2609 cc_default="gcc"
2610 cxx_default="g++"
2611 host_cc_default="gcc"
2612 cp_f="cp -f"
2613 install="install"
2614 ln_s="ln -s -f"
2615 nm_default="nm -g"
2616 objformat="elf"
2617 pkg_config_default=pkg-config
2618 ranlib_default="ranlib"
2619 strip_default="strip"
2620 yasmexe_default="yasm"
2621 windres_default="windres"
2622
2623 nogas=":"
2624
2625 # OS
2626 target_os_default=$(tolower $(uname -s))
2627 host_os=$target_os_default
2628
2629 # machine
2630 if test "$target_os_default" = aix; then
2631     arch_default=$(uname -p)
2632     strip_default="strip -X32_64"
2633 else
2634     arch_default=$(uname -m)
2635 fi
2636 cpu="generic"
2637
2638 # configurable options
2639 enable $PROGRAM_LIST
2640 enable $DOCUMENT_LIST
2641 enable $EXAMPLE_LIST
2642 enable $(filter_out avresample $LIBRARY_LIST)
2643 enable stripping
2644
2645 enable asm
2646 enable debug
2647 enable doc
2648 enable optimizations
2649 enable runtime_cpudetect
2650 enable safe_bitstream_reader
2651 enable static
2652 enable swscale_alpha
2653
2654 sws_max_filter_size_default=256
2655 set_default sws_max_filter_size
2656
2657 # Enable hwaccels by default.
2658 enable dxva2 vaapi vda vdpau xvmc
2659 enable xlib
2660
2661 # build settings
2662 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2663 LIBPREF="lib"
2664 LIBSUF=".a"
2665 FULLNAME='$(NAME)$(BUILDSUF)'
2666 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2667 SLIBPREF="lib"
2668 SLIBSUF=".so"
2669 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2670 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2671 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2672 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2673 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2674 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2675
2676 asflags_filter=echo
2677 cflags_filter=echo
2678 ldflags_filter=echo
2679
2680 AS_C='-c'
2681 AS_O='-o $@'
2682 CC_C='-c'
2683 CC_E='-E -o $@'
2684 CC_O='-o $@'
2685 CXX_C='-c'
2686 CXX_O='-o $@'
2687 LD_O='-o $@'
2688 LD_LIB='-l%'
2689 LD_PATH='-L'
2690 HOSTCC_C='-c'
2691 HOSTCC_E='-E -o $@'
2692 HOSTCC_O='-o $@'
2693 HOSTLD_O='-o $@'
2694
2695 host_libs='-lm'
2696 host_cflags_filter=echo
2697 host_ldflags_filter=echo
2698
2699 target_path='$(CURDIR)'
2700
2701 # since the object filename is not given with the -MM flag, the compiler
2702 # is only able to print the basename, and we must add the path ourselves
2703 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2704 DEPFLAGS='-MM'
2705
2706 # find source path
2707 if test -f configure; then
2708     source_path=.
2709 else
2710     source_path=$(cd $(dirname "$0"); pwd)
2711     echo "$source_path" | grep -q '[[:blank:]]' &&
2712         die "Out of tree builds are impossible with whitespace in source path."
2713     test -e "$source_path/config.h" &&
2714         die "Out of tree builds are impossible with config.h in source dir."
2715 fi
2716
2717 for v in "$@"; do
2718     r=${v#*=}
2719     l=${v%"$r"}
2720     r=$(sh_quote "$r")
2721     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2722 done
2723
2724 find_things(){
2725     thing=$1
2726     pattern=$2
2727     file=$source_path/$3
2728     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2729 }
2730
2731 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2732 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2733 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2734 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2735 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2736 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2737 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2738 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2739 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2740 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2741 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2742
2743 ALL_COMPONENTS="
2744     $BSF_LIST
2745     $DECODER_LIST
2746     $DEMUXER_LIST
2747     $ENCODER_LIST
2748     $FILTER_LIST
2749     $HWACCEL_LIST
2750     $INDEV_LIST
2751     $MUXER_LIST
2752     $OUTDEV_LIST
2753     $PARSER_LIST
2754     $PROTOCOL_LIST
2755 "
2756
2757 for n in $COMPONENT_LIST; do
2758     v=$(toupper ${n%s})_LIST
2759     eval enable \$$v
2760     eval ${n}_if_any="\$$v"
2761 done
2762
2763 enable $ARCH_EXT_LIST
2764
2765 die_unknown(){
2766     echo "Unknown option \"$1\"."
2767     echo "See $0 --help for available options."
2768     exit 1
2769 }
2770
2771 print_3_columns() {
2772     cat | tr ' ' '\n' | sort | pr -r -3 -t
2773 }
2774
2775 show_list() {
2776     suffix=_$1
2777     shift
2778     echo $* | sed s/$suffix//g | print_3_columns
2779     exit 0
2780 }
2781
2782 rand_list(){
2783     IFS=', '
2784     set -- $*
2785     unset IFS
2786     for thing; do
2787         comp=${thing%:*}
2788         prob=${thing#$comp}
2789         prob=${prob#:}
2790         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2791         echo "prob ${prob:-0.5}"
2792         printf '%s\n' $comp
2793     done
2794 }
2795
2796 do_random(){
2797     action=$1
2798     shift
2799     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2800     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2801 }
2802
2803 for opt do
2804     optval="${opt#*=}"
2805     case "$opt" in
2806         --extra-ldflags=*)
2807             add_ldflags $optval
2808         ;;
2809         --extra-libs=*)
2810             add_extralibs $optval
2811         ;;
2812         --disable-devices)
2813             disable $INDEV_LIST $OUTDEV_LIST
2814         ;;
2815         --enable-debug=*)
2816             debuglevel="$optval"
2817         ;;
2818         --disable-programs)
2819             disable $PROGRAM_LIST
2820         ;;
2821         --disable-everything)
2822             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2823         ;;
2824         --disable-all)
2825             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2826             disable $LIBRARY_LIST $PROGRAM_LIST doc
2827         ;;
2828         --enable-random|--disable-random)
2829             action=${opt%%-random}
2830             do_random ${action#--} $COMPONENT_LIST
2831         ;;
2832         --enable-random=*|--disable-random=*)
2833             action=${opt%%-random=*}
2834             do_random ${action#--} $optval
2835         ;;
2836         --enable-*=*|--disable-*=*)
2837             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2838             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2839             eval list=\$$(toupper $thing)_LIST
2840             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2841             list=$(filter "$name" $list)
2842             [ "$list" = "" ] && warn "Option $opt did not match anything"
2843             $action $list
2844         ;;
2845         --enable-?*|--disable-?*)
2846             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2847             if is_in $option $COMPONENT_LIST; then
2848                 test $action = disable && action=unset
2849                 eval $action \$$(toupper ${option%s})_LIST
2850             elif is_in $option $CMDLINE_SELECT; then
2851                 $action $option
2852             else
2853                 die_unknown $opt
2854             fi
2855         ;;
2856         --list-*)
2857             NAME="${opt#--list-}"
2858             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2859             NAME=${NAME%s}
2860             eval show_list $NAME \$$(toupper $NAME)_LIST
2861         ;;
2862         --help|-h) show_help
2863         ;;
2864         --fatal-warnings) enable fatal_warnings
2865         ;;
2866         *)
2867             optname="${opt%%=*}"
2868             optname="${optname#--}"
2869             optname=$(echo "$optname" | sed 's/-/_/g')
2870             if is_in $optname $CMDLINE_SET; then
2871                 eval $optname='$optval'
2872             elif is_in $optname $CMDLINE_APPEND; then
2873                 append $optname "$optval"
2874             else
2875                 die_unknown $opt
2876             fi
2877         ;;
2878     esac
2879 done
2880
2881 disabled logging && logfile=/dev/null
2882
2883 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2884 set >> $logfile
2885
2886 test -n "$cross_prefix" && enable cross_compile
2887
2888 if enabled cross_compile; then
2889     test -n "$arch" && test -n "$target_os" ||
2890         die "Must specify target arch and OS when cross-compiling"
2891 fi
2892
2893 ar_default="${cross_prefix}${ar_default}"
2894 cc_default="${cross_prefix}${cc_default}"
2895 cxx_default="${cross_prefix}${cxx_default}"
2896 nm_default="${cross_prefix}${nm_default}"
2897 pkg_config_default="${cross_prefix}${pkg_config_default}"
2898 ranlib_default="${cross_prefix}${ranlib_default}"
2899 strip_default="${cross_prefix}${strip_default}"
2900 windres_default="${cross_prefix}${windres_default}"
2901
2902 sysinclude_default="${sysroot}/usr/include"
2903
2904 test -n "$valgrind" && toolchain="valgrind-memcheck"
2905
2906 case "$toolchain" in
2907     clang-asan)
2908         cc_default="clang"
2909         add_cflags  -fsanitize=address
2910         add_ldflags -fsanitize=address
2911     ;;
2912     clang-tsan)
2913         cc_default="clang"
2914         add_cflags  -fsanitize=thread -pie
2915         add_ldflags -fsanitize=thread -pie
2916     ;;
2917     clang-usan)
2918         cc_default="clang"
2919         add_cflags  -fsanitize=undefined
2920         add_ldflags -fsanitize=undefined
2921     ;;
2922     gcc-asan)
2923         cc_default="gcc"
2924         add_cflags  -fsanitize=address
2925         add_ldflags -fsanitize=address
2926     ;;
2927     gcc-tsan)
2928         cc_default="gcc"
2929         add_cflags  -fsanitize=thread -pie -fPIC
2930         add_ldflags -fsanitize=thread -pie -fPIC
2931     ;;
2932     gcc-usan)
2933         cc_default="gcc"
2934         add_cflags  -fsanitize=undefined
2935         add_ldflags -fsanitize=undefined
2936     ;;
2937     valgrind-massif)
2938         target_exec_default=${valgrind:-"valgrind"}
2939         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"
2940     ;;
2941     valgrind-memcheck)
2942         target_exec_default=${valgrind:-"valgrind"}
2943         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2944     ;;
2945     msvc)
2946         # Check whether the current MSVC version needs the C99 converter.
2947         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2948         # support enough of C99 to build ffmpeg. Default to the new
2949         # behaviour if the regexp was unable to match anything, since this
2950         # successfully parses the version number of existing supported
2951         # versions that require the converter (MSVC 2010 and 2012).
2952         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2953         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2954             cc_default="cl"
2955         else
2956             cc_default="c99wrap cl"
2957         fi
2958         ld_default="link"
2959         nm_default="dumpbin -symbols"
2960         ar_default="lib"
2961         target_os_default="win32"
2962         # Use a relative path for TMPDIR. This makes sure all the
2963         # ffconf temp files are written with a relative path, avoiding
2964         # issues with msys/win32 path conversion for MSVC parameters
2965         # such as -Fo<file> or -out:<file>.
2966         TMPDIR=.
2967     ;;
2968     icl)
2969         cc_default="icl"
2970         ld_default="xilink"
2971         nm_default="dumpbin -symbols"
2972         ar_default="xilib"
2973         target_os_default="win32"
2974         TMPDIR=.
2975     ;;
2976     gcov)
2977         add_cflags  -fprofile-arcs -ftest-coverage
2978         add_ldflags -fprofile-arcs -ftest-coverage
2979     ;;
2980     hardened)
2981         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2982         add_ldflags -Wl,-z,relro -Wl,-z,now
2983     ;;
2984     ?*)
2985         die "Unknown toolchain $toolchain"
2986     ;;
2987 esac
2988
2989 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2990 enabled cross_compile || host_cc_default=$cc
2991 set_default host_cc
2992
2993 if ! $pkg_config --version >/dev/null 2>&1; then
2994     warn "$pkg_config not found, library detection may fail."
2995     pkg_config=false
2996 fi
2997
2998 exesuf() {
2999     case $1 in
3000         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3001     esac
3002 }
3003
3004 EXESUF=$(exesuf $target_os)
3005 HOSTEXESUF=$(exesuf $host_os)
3006
3007 # set temporary file name
3008 : ${TMPDIR:=$TEMPDIR}
3009 : ${TMPDIR:=$TMP}
3010 : ${TMPDIR:=/tmp}
3011
3012 if [ -n "$tempprefix" ] ; then
3013     mktemp(){
3014         echo $tempprefix.${HOSTNAME}.${UID}
3015     }
3016 elif ! check_cmd mktemp -u XXXXXX; then
3017     # simple replacement for missing mktemp
3018     # NOT SAFE FOR GENERAL USE
3019     mktemp(){
3020         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3021     }
3022 fi
3023
3024 tmpfile(){
3025     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3026         (set -C; exec > $tmp) 2>/dev/null ||
3027         die "Unable to create temporary file in $TMPDIR."
3028     append TMPFILES $tmp
3029     eval $1=$tmp
3030 }
3031
3032 trap 'rm -f -- $TMPFILES' EXIT
3033
3034 tmpfile TMPASM .asm
3035 tmpfile TMPC   .c
3036 tmpfile TMPCPP .cpp
3037 tmpfile TMPE   $EXESUF
3038 tmpfile TMPH   .h
3039 tmpfile TMPM   .m
3040 tmpfile TMPO   .o
3041 tmpfile TMPS   .S
3042 tmpfile TMPSH  .sh
3043 tmpfile TMPV   .ver
3044
3045 unset -f mktemp
3046
3047 chmod +x $TMPE
3048
3049 # make sure we can execute files in $TMPDIR
3050 cat > $TMPSH 2>> $logfile <<EOF
3051 #! /bin/sh
3052 EOF
3053 chmod +x $TMPSH >> $logfile 2>&1
3054 if ! $TMPSH >> $logfile 2>&1; then
3055     cat <<EOF
3056 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3057 variable to another directory and make sure that it is not mounted noexec.
3058 EOF
3059     die "Sanity test failed."
3060 fi
3061
3062 ccc_flags(){
3063     for flag; do
3064         case $flag in
3065             -std=c99)           echo -c99                       ;;
3066             -mcpu=*)            echo -arch ${flag#*=}           ;;
3067             -mieee)             echo -ieee                      ;;
3068             -O*|-fast)          echo $flag                      ;;
3069             -fno-math-errno)    echo -assume nomath_errno       ;;
3070             -g)                 echo -g3                        ;;
3071             -Wall)              echo -msg_enable level2         ;;
3072             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3073             -Wl,*)              echo $flag                      ;;
3074             -f*|-W*)                                            ;;
3075             *)                  echo $flag                      ;;
3076         esac
3077    done
3078 }
3079
3080 cparser_flags(){
3081     for flag; do
3082         case $flag in
3083             -Wno-switch)             echo -Wno-switch-enum ;;
3084             -Wno-format-zero-length) ;;
3085             -Wdisabled-optimization) ;;
3086             -Wno-pointer-sign)       echo -Wno-other ;;
3087             *)                       echo $flag ;;
3088         esac
3089     done
3090 }
3091
3092 msvc_common_flags(){
3093     for flag; do
3094         case $flag in
3095             # In addition to specifying certain flags under the compiler
3096             # specific filters, they must be specified here as well or else the
3097             # generic catch all at the bottom will print the original flag.
3098             -Wall)                ;;
3099             -std=c99)             ;;
3100             # Common flags
3101             -fomit-frame-pointer) ;;
3102             -g)                   echo -Z7 ;;
3103             -fno-math-errno)      ;;
3104             -fno-common)          ;;
3105             -fno-signed-zeros)    ;;
3106             -fPIC)                ;;
3107             -mthumb)              ;;
3108             -march=*)             ;;
3109             -lz)                  echo zlib.lib ;;
3110             -lavifil32)           echo vfw32.lib ;;
3111             -lavicap32)           echo vfw32.lib user32.lib ;;
3112             -l*)                  echo ${flag#-l}.lib ;;
3113             *)                    echo $flag ;;
3114         esac
3115     done
3116 }
3117
3118 msvc_flags(){
3119     msvc_common_flags "$@"
3120     for flag; do
3121         case $flag in
3122             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3123                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3124                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3125                                        -wd4554 \
3126                                        -wd4273 ;;
3127         esac
3128     done
3129 }
3130
3131 icl_flags(){
3132     msvc_common_flags "$@"
3133     for flag; do
3134         case $flag in
3135             # Despite what Intel's documentation says -Wall, which is supported
3136             # on Windows, does enable remarks so disable them here.
3137             -Wall)                echo $flag -Qdiag-disable:remark ;;
3138             -std=c99)             echo -Qstd=c99 ;;
3139         esac
3140     done
3141 }
3142
3143 icc_flags(){
3144     for flag; do
3145         case $flag in
3146             -flto)                echo -ipo ;;
3147             *)                    echo $flag ;;
3148         esac
3149     done
3150 }
3151
3152 pgi_flags(){
3153     for flag; do
3154         case $flag in
3155             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3156             -fomit-frame-pointer) echo -Mnoframe ;;
3157             -g)                   echo -gopt ;;
3158             *)                    echo $flag ;;
3159         esac
3160     done
3161 }
3162
3163 suncc_flags(){
3164     for flag; do
3165         case $flag in
3166             -march=*|-mcpu=*)
3167                 case "${flag#*=}" in
3168                     native)                   echo -xtarget=native       ;;
3169                     v9|niagara)               echo -xarch=sparc          ;;
3170                     ultrasparc)               echo -xarch=sparcvis       ;;
3171                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3172                     i586|pentium)             echo -xchip=pentium        ;;
3173                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3174                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3175                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3176                     pentium4*)          echo -xtarget=pentium4           ;;
3177                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3178                     *-sse3)             echo -xarch=sse3                 ;;
3179                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3180                     bonnell)                   echo -xarch=ssse3         ;;
3181                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3182                     westmere)                  echo -xtarget=westmere    ;;
3183                     silvermont)                echo -xarch=sse4_2        ;;
3184                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3185                     core-avx*|ivybridge|haswell|broadwell)
3186                                                echo -xarch=avx           ;;
3187                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3188                     btver1)                    echo -xarch=amdsse4a      ;;
3189                     btver2|bdver*)             echo -xarch=avx           ;;
3190                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3191                     k8|opteron|athlon64|athlon-fx)
3192                                                echo -xarch=sse2a         ;;
3193                     athlon*)                   echo -xarch=pentium_proa  ;;
3194                 esac
3195                 ;;
3196             -std=c99)             echo -xc99              ;;
3197             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3198             -fPIC)                echo -KPIC -xcode=pic32 ;;
3199             -W*,*)                echo $flag              ;;
3200             -f*-*|-W*|-mimpure-text)                      ;;
3201             -shared)              echo -G                 ;;
3202             *)                    echo $flag              ;;
3203         esac
3204     done
3205 }
3206
3207 tms470_flags(){
3208     for flag; do
3209         case $flag in
3210             -march=*|-mcpu=*)
3211                 case "${flag#*=}" in
3212                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3213                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3214                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3215                     armv6*|arm11*)          echo -mv=6   ;;
3216                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3217                                             echo -mv=5e  ;;
3218                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3219                 esac
3220                 ;;
3221             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3222             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3223             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3224             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3225             -msoft-float)   echo --float_support=vfplib       ;;
3226             -O[0-3]|-mf=*)  echo $flag                        ;;
3227             -g)             echo -g -mn                       ;;
3228             -pds=*)         echo $flag                        ;;
3229             -D*|-I*)        echo $flag                        ;;
3230             --gcc|--abi=*)  echo $flag                        ;;
3231             -me)            echo $flag                        ;;
3232         esac
3233     done
3234 }
3235
3236 probe_cc(){
3237     pfx=$1
3238     _cc=$2
3239
3240     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3241     unset _ld_o _ldflags _ld_lib _ld_path
3242     unset _depflags _DEPCMD _DEPFLAGS
3243     _flags_filter=echo
3244
3245     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3246         true # no-op to avoid reading stdin in following checks
3247     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3248         _type=llvm_gcc
3249         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3250         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3251         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3252         _cflags_speed='-O3'
3253         _cflags_size='-Os'
3254     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3255         _type=gcc
3256         gcc_version=$($_cc --version | head -n1)
3257         gcc_basever=$($_cc -dumpversion)
3258         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3259         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3260         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3261         if ! $_cc -dumpversion | grep -q '^2\.'; then
3262             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3263         fi
3264         _cflags_speed='-O3'
3265         _cflags_size='-Os'
3266     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3267         _type=icc
3268         _ident=$($_cc --version | head -n1)
3269         _depflags='-MMD'
3270         _cflags_speed='-O3'
3271         _cflags_size='-Os'
3272         _cflags_noopt='-O1'
3273         _flags_filter=icc_flags
3274     elif $_cc -v 2>&1 | grep -q xlc; then
3275         _type=xlc
3276         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3277         _cflags_speed='-O5'
3278         _cflags_size='-O5 -qcompact'
3279     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3280         _type=ccc
3281         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3282         _DEPFLAGS='-M'
3283         _cflags_speed='-fast'
3284         _cflags_size='-O1'
3285         _flags_filter=ccc_flags
3286     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3287         test -d "$sysroot" || die "No valid sysroot specified."
3288         _type=armcc
3289         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3290         armcc_conf="$PWD/armcc.conf"
3291         $_cc --arm_linux_configure                 \
3292              --arm_linux_config_file="$armcc_conf" \
3293              --configure_sysroot="$sysroot"        \
3294              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3295              die "Error creating armcc configuration file."
3296         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3297         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3298         as_default="${cross_prefix}gcc"
3299         _depflags='-MMD'
3300         _cflags_speed='-O3'
3301         _cflags_size='-Os'
3302     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3303         _type=tms470
3304         _ident=$($_cc -version | head -n1 | tr -s ' ')
3305         _flags='--gcc --abi=eabi -me'
3306         _cc_e='-ppl -fe=$@'
3307         _cc_o='-fe=$@'
3308         _depflags='-ppa -ppd=$(@:.o=.d)'
3309         _cflags_speed='-O3 -mf=5'
3310         _cflags_size='-O3 -mf=2'
3311         _flags_filter=tms470_flags
3312     elif $_cc -v 2>&1 | grep -q clang; then
3313         _type=clang
3314         _ident=$($_cc --version | head -n1)
3315         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3316         _cflags_speed='-O3'
3317         _cflags_size='-Os'
3318     elif $_cc -V 2>&1 | grep -q Sun; then
3319         _type=suncc
3320         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3321         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3322         _DEPFLAGS='-xM1 -xc99'
3323         _ldflags='-std=c99'
3324         _cflags_speed='-O5'
3325         _cflags_size='-O5 -xspace'
3326         _flags_filter=suncc_flags
3327     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3328         _type=pathscale
3329         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3330         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3331         _cflags_speed='-O2'
3332         _cflags_size='-Os'
3333         _flags_filter='filter_out -Wdisabled-optimization'
3334     elif $_cc -v 2>&1 | grep -q Open64; then
3335         _type=open64
3336         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3337         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3338         _cflags_speed='-O2'
3339         _cflags_size='-Os'
3340         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3341     elif $_cc -V 2>&1 | grep -q Portland; then
3342         _type=pgi
3343         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3344         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3345         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3346         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3347         _cflags_noopt="-O"
3348         _flags_filter=pgi_flags
3349     elif $_cc 2>&1 | grep -q Microsoft; then
3350         _type=msvc
3351         _ident=$($cc 2>&1 | head -n1)
3352         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3353         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3354         _cflags_speed="-O2"
3355         _cflags_size="-O1"
3356         if $_cc 2>&1 | grep -q Linker; then
3357             _ld_o='-out:$@'
3358         else
3359             _ld_o='-Fe$@'
3360         fi
3361         _cc_o='-Fo$@'
3362         _cc_e='-P -Fi$@'
3363         _flags_filter=msvc_flags
3364         _ld_lib='lib%.a'
3365         _ld_path='-libpath:'
3366         _flags='-nologo'
3367         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3368         if [ $pfx = hostcc ]; then
3369             append _cflags -Dsnprintf=_snprintf
3370         fi
3371         disable stripping
3372     elif $_cc 2>&1 | grep -q Intel; then
3373         _type=icl
3374         _ident=$($cc 2>&1 | head -n1)
3375         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3376         # Not only is O3 broken on 13.x+ but it is slower on all previous
3377         # versions (tested) as well.
3378         _cflags_speed="-O2"
3379         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3380         if $_cc 2>&1 | grep -q Linker; then
3381             _ld_o='-out:$@'
3382         else
3383             _ld_o='-Fe$@'
3384         fi
3385         _cc_o='-Fo$@'
3386         _cc_e='-P'
3387         _flags_filter=icl_flags
3388         _ld_lib='lib%.a'
3389         _ld_path='-libpath:'
3390         # -Qdiag-error to make icl error when seeing certain unknown arguments
3391         _flags='-nologo -Qdiag-error:4044,10157'
3392         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3393         # with MSVC which enables it by default.
3394         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3395         if [ $pfx = hostcc ]; then
3396             append _cflags -Dsnprintf=_snprintf
3397         fi
3398     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3399         _type=cparser
3400         _ident=$($_cc --version | head -n1)
3401         _depflags='-MMD'
3402         _cflags_speed='-O4'
3403         _cflags_size='-O2'
3404         _flags_filter=cparser_flags
3405     fi
3406
3407     eval ${pfx}_type=\$_type
3408     eval ${pfx}_ident=\$_ident
3409 }
3410
3411 set_ccvars(){
3412     eval ${1}_C=\${_cc_c-\${${1}_C}}
3413     eval ${1}_E=\${_cc_e-\${${1}_E}}
3414     eval ${1}_O=\${_cc_o-\${${1}_O}}
3415
3416     if [ -n "$_depflags" ]; then
3417         eval ${1}_DEPFLAGS=\$_depflags
3418     else
3419         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3420         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3421         eval DEP${1}FLAGS=\$_flags
3422     fi
3423 }
3424
3425 probe_cc cc "$cc"
3426 cflags_filter=$_flags_filter
3427 cflags_speed=$_cflags_speed
3428 cflags_size=$_cflags_size
3429 cflags_noopt=$_cflags_noopt
3430 add_cflags $_flags $_cflags
3431 cc_ldflags=$_ldflags
3432 set_ccvars CC
3433
3434 probe_cc hostcc "$host_cc"
3435 host_cflags_filter=$_flags_filter
3436 add_host_cflags  $_flags $_cflags
3437 set_ccvars HOSTCC
3438
3439 test -n "$cc_type" && enable $cc_type ||
3440     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3441
3442 : ${as_default:=$cc}
3443 : ${dep_cc_default:=$cc}
3444 : ${ld_default:=$cc}
3445 : ${host_ld_default:=$host_cc}
3446 set_default ar as dep_cc ld host_ld windres
3447
3448 probe_cc as "$as"
3449 asflags_filter=$_flags_filter
3450 add_asflags $_flags $_cflags
3451 set_ccvars AS
3452
3453 probe_cc ld "$ld"
3454 ldflags_filter=$_flags_filter
3455 add_ldflags $_flags $_ldflags
3456 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3457 LD_O=${_ld_o-$LD_O}
3458 LD_LIB=${_ld_lib-$LD_LIB}
3459 LD_PATH=${_ld_path-$LD_PATH}
3460
3461 probe_cc hostld "$host_ld"
3462 host_ldflags_filter=$_flags_filter
3463 add_host_ldflags $_flags $_ldflags
3464 HOSTLD_O=${_ld_o-$HOSTLD_O}
3465
3466 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3467     probe_cc depcc "$dep_cc"
3468     CCDEP=${_DEPCMD:-$DEPCMD}
3469     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3470     DEPCCFLAGS=$_flags
3471 fi
3472
3473 if $ar 2>&1 | grep -q Microsoft; then
3474     arflags="-nologo"
3475     ar_o='-out:$@'
3476 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3477     arflags="rq"
3478     ar_o='$@'
3479 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3480     arflags='-Xany -r -c'
3481     ar_o='$@'
3482 else
3483     arflags="rc"
3484     ar_o='$@'
3485 fi
3486
3487 add_cflags $extra_cflags
3488 add_cxxflags $extra_cxxflags
3489 add_asflags $extra_cflags
3490
3491 if test -n "$sysroot"; then
3492     case "$cc_type" in
3493         gcc|llvm_gcc|clang)
3494             add_cppflags --sysroot="$sysroot"
3495             add_ldflags --sysroot="$sysroot"
3496 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3497             add_cppflags -isysroot "$sysroot"
3498             add_ldflags -isysroot "$sysroot"
3499         ;;
3500         tms470)
3501             add_cppflags -I"$sysinclude"
3502             add_ldflags  --sysroot="$sysroot"
3503         ;;
3504     esac
3505 fi
3506
3507 if test "$cpu" = host; then
3508     enabled cross_compile &&
3509         die "--cpu=host makes no sense when cross-compiling."
3510
3511     case "$cc_type" in
3512         gcc|llvm_gcc)
3513             check_native(){
3514                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3515                 sed -n "/cc1.*$1=/{
3516                             s/.*$1=\\([^ ]*\\).*/\\1/
3517                             p
3518                             q
3519                         }" $TMPE
3520             }
3521             cpu=$(check_native -march || check_native -mcpu)
3522         ;;
3523     esac
3524
3525     test "${cpu:-host}" = host &&
3526         die "--cpu=host not supported with compiler $cc"
3527 fi
3528
3529 # Deal with common $arch aliases
3530 case "$arch" in
3531     aarch64|arm64)
3532         arch="aarch64"
3533     ;;
3534     arm*|iPad*|iPhone*)
3535         arch="arm"
3536     ;;
3537     mips*|IP*)
3538         arch="mips"
3539     ;;
3540     parisc*|hppa*)
3541         arch="parisc"
3542     ;;
3543     "Power Macintosh"|ppc*|powerpc*)
3544         arch="ppc"
3545     ;;
3546     s390|s390x)
3547         arch="s390"
3548     ;;
3549     sh4|sh)
3550         arch="sh4"
3551     ;;
3552     sun4u|sparc*)
3553         arch="sparc"
3554     ;;
3555     tilegx|tile-gx)
3556         arch="tilegx"
3557     ;;
3558     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3559         arch="x86"
3560     ;;
3561 esac
3562
3563 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3564 enable $arch
3565
3566 # Add processor-specific flags
3567 if enabled aarch64; then
3568
3569     case $cpu in
3570         armv*)
3571             cpuflags="-march=$cpu"
3572         ;;
3573         *)
3574             cpuflags="-mcpu=$cpu"
3575         ;;
3576     esac
3577
3578 elif enabled alpha; then
3579
3580     cpuflags="-mcpu=$cpu"
3581
3582 elif enabled arm; then
3583
3584     check_arm_arch() {
3585         check_cpp_condition stddef.h \
3586             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3587             $cpuflags
3588     }
3589
3590     probe_arm_arch() {
3591         if   check_arm_arch 4;        then echo armv4;
3592         elif check_arm_arch 4T;       then echo armv4t;
3593         elif check_arm_arch 5;        then echo armv5;
3594         elif check_arm_arch 5E;       then echo armv5e;
3595         elif check_arm_arch 5T;       then echo armv5t;
3596         elif check_arm_arch 5TE;      then echo armv5te;
3597         elif check_arm_arch 5TEJ;     then echo armv5te;
3598         elif check_arm_arch 6;        then echo armv6;
3599         elif check_arm_arch 6J;       then echo armv6j;
3600         elif check_arm_arch 6K;       then echo armv6k;
3601         elif check_arm_arch 6Z;       then echo armv6z;
3602         elif check_arm_arch 6ZK;      then echo armv6zk;
3603         elif check_arm_arch 6T2;      then echo armv6t2;
3604         elif check_arm_arch 7;        then echo armv7;
3605         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3606         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3607         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3608         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3609         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3610         fi
3611     }
3612
3613     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3614
3615     case $cpu in
3616         armv*)
3617             cpuflags="-march=$cpu"
3618             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3619         ;;
3620         *)
3621             cpuflags="-mcpu=$cpu"
3622             case $cpu in
3623                 cortex-a*)                               subarch=armv7a  ;;
3624                 cortex-r*)                               subarch=armv7r  ;;
3625                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3626                 arm11*)                                  subarch=armv6   ;;
3627                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3628                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3629                 *)                             subarch=$(probe_arm_arch) ;;
3630             esac
3631         ;;
3632     esac
3633
3634     case "$subarch" in
3635         armv5t*)    enable fast_clz                ;;
3636         armv[6-8]*)
3637             enable fast_clz
3638             disabled fast_unaligned || enable fast_unaligned
3639             ;;
3640     esac
3641
3642 elif enabled avr32; then
3643
3644     case $cpu in
3645         ap7[02]0[0-2])
3646             subarch="avr32_ap"
3647             cpuflags="-mpart=$cpu"
3648         ;;
3649         ap)
3650             subarch="avr32_ap"
3651             cpuflags="-march=$cpu"
3652         ;;
3653         uc3[ab]*)
3654             subarch="avr32_uc"
3655             cpuflags="-mcpu=$cpu"
3656         ;;
3657         uc)
3658             subarch="avr32_uc"
3659             cpuflags="-march=$cpu"
3660         ;;
3661     esac
3662
3663 elif enabled bfin; then
3664
3665     cpuflags="-mcpu=$cpu"
3666
3667 elif enabled mips; then
3668
3669     cpuflags="-march=$cpu"
3670
3671     case $cpu in
3672         24kc)
3673             disable mipsfpu
3674             disable mipsdspr1
3675             disable mipsdspr2
3676         ;;
3677         24kf*)
3678             disable mipsdspr1
3679             disable mipsdspr2
3680         ;;
3681         24kec|34kc|1004kc)
3682             disable mipsfpu
3683             disable mipsdspr2
3684         ;;
3685         24kef*|34kf*|1004kf*)
3686             disable mipsdspr2
3687         ;;
3688         74kc)
3689             disable mipsfpu
3690         ;;
3691     esac
3692
3693 elif enabled ppc; then
3694
3695     disable ldbrx
3696     disable vsx
3697
3698     case $(tolower $cpu) in
3699         601|ppc601|powerpc601)
3700             cpuflags="-mcpu=601"
3701             disable altivec
3702         ;;
3703         603*|ppc603*|powerpc603*)
3704             cpuflags="-mcpu=603"
3705             disable altivec
3706         ;;
3707         604*|ppc604*|powerpc604*)
3708             cpuflags="-mcpu=604"
3709             disable altivec
3710         ;;
3711         g3|75*|ppc75*|powerpc75*)
3712             cpuflags="-mcpu=750"
3713             disable altivec
3714         ;;
3715         g4|745*|ppc745*|powerpc745*)
3716             cpuflags="-mcpu=7450"
3717         ;;
3718         74*|ppc74*|powerpc74*)
3719             cpuflags="-mcpu=7400"
3720         ;;
3721         g5|970|ppc970|powerpc970)
3722             cpuflags="-mcpu=970"
3723         ;;
3724         power[3-8]*)
3725             cpuflags="-mcpu=$cpu"
3726         ;;
3727         cell)
3728             cpuflags="-mcpu=cell"
3729             enable ldbrx
3730         ;;
3731         e500mc)
3732             cpuflags="-mcpu=e500mc"
3733             disable altivec
3734         ;;
3735         e500v2)
3736             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3737             disable altivec
3738             disable dcbzl
3739         ;;
3740         e500)
3741             cpuflags="-mcpu=8540 -mhard-float"
3742             disable altivec
3743             disable dcbzl
3744         ;;
3745     esac
3746
3747 elif enabled sparc; then
3748
3749     case $cpu in
3750         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3751             cpuflags="-mcpu=$cpu"
3752         ;;
3753         ultrasparc*|niagara[234])
3754             cpuflags="-mcpu=$cpu"
3755         ;;
3756     esac
3757
3758 elif enabled x86; then
3759
3760     case $cpu in
3761         i[345]86|pentium)
3762             cpuflags="-march=$cpu"
3763             disable mmx
3764         ;;
3765         # targets that do NOT support nopl and conditional mov (cmov)
3766         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3767             cpuflags="-march=$cpu"
3768             disable i686
3769         ;;
3770         # targets that do support nopl and conditional mov (cmov)
3771         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3772         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3773             cpuflags="-march=$cpu"
3774             enable i686
3775             enable fast_cmov
3776         ;;
3777         # targets that do support conditional mov but on which it's slow
3778         pentium4|pentium4m|prescott|nocona)
3779             cpuflags="-march=$cpu"
3780             enable i686
3781             disable fast_cmov
3782         ;;
3783     esac
3784
3785 fi
3786
3787 if [ "$cpu" != generic ]; then
3788     add_cflags  $cpuflags
3789     add_asflags $cpuflags
3790 fi
3791
3792 # compiler sanity check
3793 check_exec <<EOF
3794 int main(void){ return 0; }
3795 EOF
3796 if test "$?" != 0; then
3797     echo "$cc is unable to create an executable file."
3798     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3799         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3800         echo "Only do this if you know what cross compiling means."
3801     fi
3802     die "C compiler test failed."
3803 fi
3804
3805 add_cppflags -D_ISOC99_SOURCE
3806 add_cxxflags -D__STDC_CONSTANT_MACROS
3807 check_cflags -std=c99
3808 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3809 #include <stdlib.h>
3810 EOF
3811 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3812 #include <stdlib.h>
3813 EOF
3814
3815 add_host_cppflags -D_ISOC99_SOURCE
3816 check_host_cflags -std=c99
3817 check_host_cflags -Wall
3818 check_host_cflags -O3
3819
3820 check_64bit(){
3821     arch32=$1
3822     arch64=$2
3823     expr=$3
3824     check_code cc "" "int test[2*($expr) - 1]" &&
3825         subarch=$arch64 || subarch=$arch32
3826 }
3827
3828 case "$arch" in
3829     aarch64|alpha|ia64)
3830         spic=$shared
3831     ;;
3832     mips)
3833         check_64bit mips mips64 '_MIPS_SIM > 1'
3834         spic=$shared
3835     ;;
3836     parisc)
3837         check_64bit parisc parisc64 'sizeof(void *) > 4'
3838         spic=$shared
3839     ;;
3840     ppc)
3841         check_64bit ppc ppc64 'sizeof(void *) > 4'
3842         spic=$shared
3843     ;;
3844     s390)
3845         check_64bit s390 s390x 'sizeof(void *) > 4'
3846         spic=$shared
3847     ;;
3848     sparc)
3849         check_64bit sparc sparc64 'sizeof(void *) > 4'
3850         spic=$shared
3851     ;;
3852     x86)
3853         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3854         if test "$subarch" = "x86_64"; then
3855             spic=$shared
3856         fi
3857     ;;
3858     ppc)
3859         check_cc <<EOF && subarch="ppc64"
3860         int test[(int)sizeof(char*) - 7];
3861 EOF
3862     ;;
3863 esac
3864
3865 enable $subarch
3866 enabled spic && enable_weak pic
3867
3868 # OS specific
3869 case $target_os in
3870     aix)
3871         SHFLAGS=-shared
3872         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3873         enabled shared && add_ldflags -Wl,-brtl
3874         ;;
3875     android)
3876         disable symver
3877         SLIB_INSTALL_NAME='$(SLIBNAME)'
3878         SLIB_INSTALL_LINKS=
3879         # soname not set on purpose
3880         SHFLAGS=-shared
3881         ;;
3882     haiku)
3883         prefix_default="/boot/common"
3884         network_extralibs="-lnetwork"
3885         host_libs=
3886         ;;
3887     sunos)
3888         SHFLAGS='-shared -Wl,-h,$$(@F)'
3889         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3890         network_extralibs="-lsocket -lnsl"
3891         # When using suncc to build, the Solaris linker will mark
3892         # an executable with each instruction set encountered by
3893         # the Solaris assembler.  As our libraries contain their own
3894         # guards for processor-specific code, instead suppress
3895         # generation of the HWCAPS ELF section on Solaris x86 only.
3896         enabled_all suncc x86 &&
3897             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3898             add_ldflags -Wl,-M,mapfile
3899         nm_default='nm -P -g'
3900         ;;
3901     netbsd)
3902         disable symver
3903         oss_indev_extralibs="-lossaudio"
3904         oss_outdev_extralibs="-lossaudio"
3905         enabled gcc || check_ldflags -Wl,-zmuldefs
3906         ;;
3907     openbsd|bitrig)
3908         disable symver
3909         SHFLAGS='-shared'
3910         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3911         SLIB_INSTALL_LINKS=
3912         oss_indev_extralibs="-lossaudio"
3913         oss_outdev_extralibs="-lossaudio"
3914         ;;
3915     dragonfly)
3916         disable symver
3917         ;;
3918     freebsd)
3919         ;;
3920     bsd/os)
3921         add_extralibs -lpoll -lgnugetopt
3922         strip="strip -d"
3923         ;;
3924     darwin)
3925         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3926         enabled ppc && add_asflags -force_cpusubtype_ALL
3927         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3928         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3929         strip="${strip} -x"
3930         add_ldflags -Wl,-dynamic,-search_paths_first
3931         SLIBSUF=".dylib"
3932         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3933         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3934         objformat="macho"
3935         enabled x86_64 && objformat="macho64"
3936         enabled_any pic shared ||
3937             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3938         ;;
3939     mingw32*)
3940         if test $target_os = "mingw32ce"; then
3941             disable network
3942         else
3943             target_os=mingw32
3944         fi
3945         LIBTARGET=i386
3946         if enabled x86_64; then
3947             LIBTARGET="i386:x86-64"
3948         elif enabled arm; then
3949             LIBTARGET=arm-wince
3950         fi
3951         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3952         check_ldflags -Wl,--nxcompat
3953         check_ldflags -Wl,--dynamicbase
3954         shlibdir_default="$bindir_default"
3955         SLIBPREF=""
3956         SLIBSUF=".dll"
3957         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3958         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3959         dlltool="${cross_prefix}dlltool"
3960         if check_cmd lib.exe -list; then
3961             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3962             if enabled x86_64; then
3963                 LIBTARGET=x64
3964             fi
3965         elif check_cmd $dlltool --version; then
3966             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3967         fi
3968         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3969         SLIB_INSTALL_LINKS=
3970         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3971         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3972         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3973         objformat="win32"
3974         ranlib=:
3975         enable dos_paths
3976         ;;
3977     win32|win64)
3978         disable symver
3979         if enabled shared; then
3980             # Link to the import library instead of the normal static library
3981             # for shared libs.
3982             LD_LIB='%.lib'
3983             # Cannot build both shared and static libs with MSVC or icl.
3984             disable static
3985         fi
3986         shlibdir_default="$bindir_default"
3987         SLIBPREF=""
3988         SLIBSUF=".dll"
3989         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3990         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3991         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3992         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3993         SLIB_INSTALL_LINKS=
3994         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3995         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3996         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3997         objformat="win32"
3998         ranlib=:
3999         enable dos_paths
4000         ;;
4001     cygwin*)
4002         target_os=cygwin
4003         shlibdir_default="$bindir_default"
4004         SLIBPREF="cyg"
4005         SLIBSUF=".dll"
4006         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4007         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4008         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4009         SLIB_INSTALL_LINKS=
4010         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4011         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4012         objformat="win32"
4013         enable dos_paths
4014         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4015         ;;
4016     *-dos|freedos|opendos)
4017         network_extralibs="-lsocket"
4018         objformat="coff"
4019         enable dos_paths
4020         add_cppflags -U__STRICT_ANSI__
4021         ;;
4022     linux)
4023         enable dv1394
4024         ;;
4025     irix*)
4026         target_os=irix
4027         ranlib="echo ignoring ranlib"
4028         ;;
4029     os/2*)
4030         strip="lxlite -CS"
4031         ln_s="cp -f"
4032         objformat="aout"
4033         add_cppflags -D_GNU_SOURCE
4034         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4035         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4036         LIBSUF="_s.a"
4037         SLIBPREF=""
4038         SLIBSUF=".dll"
4039         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4040         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4041         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4042             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4043             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4044             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4045             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4046             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4047         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4048             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4049         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4050         enable dos_paths
4051         enable_weak os2threads
4052         ;;
4053     gnu/kfreebsd)
4054         add_cppflags -D_BSD_SOURCE
4055         ;;
4056     gnu)
4057         ;;
4058     qnx)
4059         add_cppflags -D_QNX_SOURCE
4060         network_extralibs="-lsocket"
4061         ;;
4062     symbian)
4063         SLIBSUF=".dll"
4064         enable dos_paths
4065         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4066         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4067         add_ldflags -Wl,--target1-abs,--no-undefined \
4068                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4069                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4070         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4071                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4072                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4073         ;;
4074     osf1)
4075         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4076         ;;
4077     minix)
4078         ;;
4079     plan9)
4080         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4081                      -D_REENTRANT_SOURCE        \
4082                      -D_RESEARCH_SOURCE         \
4083                      -DFD_SETSIZE=96            \
4084                      -DHAVE_SOCK_OPTS
4085         add_compat strtod.o strtod=avpriv_strtod
4086         network_extralibs='-lbsd'
4087         exeobjs=compat/plan9/main.o
4088         disable ffserver
4089         cp_f='cp'
4090         ;;
4091     none)
4092         ;;
4093     *)
4094         die "Unknown OS '$target_os'."
4095         ;;
4096 esac
4097
4098 # determine libc flavour
4099
4100 probe_libc(){
4101     pfx=$1
4102     pfx_no_=${pfx%_}
4103     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4104     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4105         eval ${pfx}libc_type=uclibc
4106         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4107     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4108         eval ${pfx}libc_type=glibc
4109         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4110     # MinGW headers can be installed on Cygwin, so check for newlib first.
4111     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4112         eval ${pfx}libc_type=newlib
4113         add_${pfx}cppflags -U__STRICT_ANSI__
4114     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4115     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4116         eval ${pfx}libc_type=mingw64
4117         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4118             add_compat msvcrt/snprintf.o
4119             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4120         fi
4121         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4122         eval test \$${pfx_no_}cc_type = "gcc" &&
4123             add_${pfx}cppflags -D__printf__=__gnu_printf__
4124     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4125          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4126         eval ${pfx}libc_type=mingw32
4127         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4128             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4129             die "ERROR: MinGW32 runtime version must be >= 3.15."
4130         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4131         eval test \$${pfx_no_}cc_type = "gcc" &&
4132             add_${pfx}cppflags -D__printf__=__gnu_printf__
4133     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4134         eval ${pfx}libc_type=msvcrt
4135         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4136         # 0x601 by default unless something else is set by the user.
4137         # This can easily lead to us detecting functions only present
4138         # in such new versions and producing binaries requiring windows 7.0.
4139         # Therefore explicitly set the default to XP unless the user has
4140         # set something else on the command line.
4141         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4142             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4143     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4144         eval ${pfx}libc_type=klibc
4145     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4146         eval ${pfx}libc_type=bionic
4147     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4148         eval ${pfx}libc_type=solaris
4149         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4150     fi
4151 }
4152
4153 probe_libc
4154 test -n "$libc_type" && enable libc_$libc_type
4155 probe_libc host_
4156 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4157
4158 case $libc_type in
4159     bionic)
4160         add_compat strtod.o strtod=avpriv_strtod
4161         ;;
4162     msvcrt)
4163         add_compat strtod.o strtod=avpriv_strtod
4164         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4165                                      _snprintf=avpriv_snprintf  \
4166                                      vsnprintf=avpriv_vsnprintf
4167         ;;
4168 esac
4169
4170 # hacks for compiler/libc/os combinations
4171
4172 if enabled_all tms470 libc_glibc; then
4173     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4174     add_cppflags -D__USER_LABEL_PREFIX__=
4175     add_cppflags -D__builtin_memset=memset
4176     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4177     add_cflags   -pds=48    # incompatible redefinition of macro
4178 fi
4179
4180 if enabled_all ccc libc_glibc; then
4181     add_ldflags -Wl,-z,now  # calls to libots crash without this
4182 fi
4183
4184 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4185     add_cppflags '-I\$(SRC_PATH)/compat/float'
4186
4187 esc(){
4188     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4189 }
4190
4191 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4192
4193 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4194
4195 set_default $PATHS_LIST
4196 set_default nm
4197
4198 # we need to build at least one lib type
4199 if ! enabled_any static shared; then
4200     cat <<EOF
4201 At least one library type must be built.
4202 Specify --enable-static to build the static libraries or --enable-shared to
4203 build the shared libraries as well. To only build the shared libraries specify
4204 --disable-static in addition to --enable-shared.
4205 EOF
4206     exit 1;
4207 fi
4208
4209 die_license_disabled() {
4210     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4211 }
4212
4213 die_license_disabled_gpl() {
4214     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4215 }
4216
4217 die_license_disabled gpl frei0r
4218 die_license_disabled gpl libcdio
4219 die_license_disabled gpl libutvideo
4220 die_license_disabled gpl libvidstab
4221 die_license_disabled gpl libx264
4222 die_license_disabled gpl libx265
4223 die_license_disabled gpl libxavs
4224 die_license_disabled gpl libxvid
4225 die_license_disabled gpl libzvbi
4226 die_license_disabled gpl x11grab
4227
4228 die_license_disabled nonfree libaacplus
4229 die_license_disabled nonfree libfaac
4230 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4231 enabled gpl && die_license_disabled_gpl nonfree openssl
4232
4233 die_license_disabled version3 libopencore_amrnb
4234 die_license_disabled version3 libopencore_amrwb
4235 die_license_disabled version3 libvo_aacenc
4236 die_license_disabled version3 libvo_amrwbenc
4237
4238 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4239
4240 disabled optimizations || check_cflags -fomit-frame-pointer
4241
4242 enable_weak_pic() {
4243     disabled pic && return
4244     enable pic
4245     add_cppflags -DPIC
4246     case "$target_os" in
4247     mingw*|cygwin*)
4248         ;;
4249     *)
4250         add_cflags -fPIC
4251         ;;
4252     esac
4253     add_asflags  -fPIC
4254 }
4255
4256 enabled pic && enable_weak_pic
4257
4258 check_cc <<EOF || die "Symbol mangling check failed."
4259 int ff_extern;
4260 EOF
4261 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4262 extern_prefix=${sym%%ff_extern*}
4263
4264 check_cc <<EOF && enable_weak inline_asm
4265 void foo(void) { __asm__ volatile ("" ::); }
4266 EOF
4267
4268 _restrict=
4269 for restrict_keyword in restrict __restrict__ __restrict; do
4270     check_cc <<EOF && _restrict=$restrict_keyword && break
4271 void foo(char * $restrict_keyword p);
4272 EOF
4273 done
4274
4275 check_cc <<EOF && enable pragma_deprecated
4276 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4277 EOF
4278
4279 check_cc <<EOF && enable attribute_packed
4280 struct { int x; } __attribute__((packed)) x;
4281 EOF
4282
4283 check_cc <<EOF && enable attribute_may_alias
4284 union { int x; } __attribute__((may_alias)) x;
4285 EOF
4286
4287 check_cc <<EOF || die "endian test failed"
4288 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4289 EOF
4290 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4291
4292 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] ;then
4293     if ! enabled bigendian ;then
4294         enable vsx
4295     fi
4296 fi
4297
4298
4299 if enabled asm; then
4300     enabled     arm         && nogas=die
4301     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4302     as=${gas:=$as}
4303     check_as <<EOF && enable gnu_as || \
4304         $nogas "GNU assembler not found, install gas-preprocessor"
4305 .macro m n
4306 \n: .int 0
4307 .endm
4308 m x
4309 EOF
4310
4311     check_as <<EOF || $nogas "GNU assembler not found, install gas-preprocessor"
4312 .altmacro
4313 EOF
4314
4315     check_as <<EOF && enable as_func
4316 .func test
4317 .endfunc
4318 EOF
4319 fi
4320
4321 check_inline_asm inline_asm_labels '"1:\n"'
4322
4323 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4324
4325 if enabled aarch64; then
4326     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4327     # internal assembler in clang 3.3 does not support this instruction
4328     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4329     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4330
4331     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4332
4333 elif enabled alpha; then
4334
4335     check_cflags -mieee
4336
4337 elif enabled arm; then
4338
4339     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4340 float func(float a, float b){ return a+b; }
4341 EOF
4342
4343     enabled thumb && check_cflags -mthumb || check_cflags -marm
4344
4345     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4346         enable vfp_args
4347     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4348         case "${cross_prefix:-$cc}" in
4349             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4350             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4351 __asm__ (".eabi_attribute 28, 1");
4352 int main(void) { return 0; }
4353 EOF
4354         esac
4355         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4356     fi
4357
4358     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4359     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4360     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4361     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4362     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4363     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4364
4365     [ $target_os = linux ] ||
4366         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4367             $ARCH_EXT_LIST_ARM
4368
4369     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4370
4371     check_as <<EOF && enable as_dn_directive
4372 ra .dn d0.i16
4373 .unreq ra
4374 EOF
4375
4376     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4377
4378 elif enabled mips; then
4379
4380     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4381     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4382      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4383     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4384      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4385     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4386      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4387     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4388      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4389
4390 elif enabled parisc; then
4391
4392     if enabled gcc; then
4393         case $($cc -dumpversion) in
4394             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4395         esac
4396     fi
4397
4398 elif enabled ppc; then
4399
4400     enable local_aligned_8 local_aligned_16 local_aligned_32
4401
4402     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4403     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4404     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4405     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4406
4407     # AltiVec flags: The FSF version of GCC differs from the Apple version
4408     if enabled altivec; then
4409         check_cflags -maltivec -mabi=altivec &&
4410         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4411         check_cflags -faltivec
4412
4413         # check if our compiler supports Motorola AltiVec C API
4414         check_cc <<EOF || disable altivec
4415 $inc_altivec_h
4416 int main(void) {
4417     vector signed int v1 = (vector signed int) { 0 };
4418     vector signed int v2 = (vector signed int) { 1 };
4419     v1 = vec_add(v1, v2);
4420     return 0;
4421 }
4422 EOF
4423
4424         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4425     fi
4426
4427     if enabled vsx; then
4428         check_cflags -mvsx
4429     fi
4430 elif enabled x86; then
4431
4432     check_builtin rdtsc    intrin.h   "__rdtsc()"
4433     check_builtin mm_empty mmintrin.h "_mm_empty()"
4434
4435     enable local_aligned_8 local_aligned_16 local_aligned_32
4436
4437     # check whether EBP is available on x86
4438     # As 'i' is stored on the stack, this program will crash
4439     # if the base pointer is used to access it because the
4440     # base pointer is cleared in the inline assembly code.
4441     check_exec_crash <<EOF && enable ebp_available
4442 volatile int i=0;
4443 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4444 return i;
4445 EOF
4446
4447     # check whether EBX is available on x86
4448     check_inline_asm ebx_available '""::"b"(0)' &&
4449         check_inline_asm ebx_available '"":::"%ebx"'
4450
4451     # check whether xmm clobbers are supported
4452     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4453
4454     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4455         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4456
4457     # check whether binutils is new enough to compile AVX/SSSE3/MMXEXT
4458     enabled avx    && check_inline_asm avx_inline    '"vextractf128 $1, %ymm0, %xmm1"'
4459     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4460     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4461
4462     if ! disabled_any asm mmx yasm; then
4463         if check_cmd $yasmexe --version; then
4464             enabled x86_64 && yasm_extra="-m amd64"
4465             yasm_debug="-g dwarf2"
4466         elif check_cmd nasm -v; then
4467             yasmexe=nasm
4468             yasm_debug="-g -F dwarf"
4469             if enabled x86_64; then
4470                 case "$objformat" in
4471                     elf)   objformat=elf64 ;;
4472                     win32) objformat=win64 ;;
4473                 esac
4474             fi
4475         fi
4476
4477         YASMFLAGS="-f $objformat $yasm_extra"
4478         enabled pic               && append YASMFLAGS "-DPIC"
4479         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4480         case "$objformat" in
4481             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4482         esac
4483
4484         check_yasm "movbe ecx, [5]" && enable yasm ||
4485             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4486         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4487         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4488         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4489         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4490         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4491         check_yasm "CPU amdnop" || disable cpunop
4492     fi
4493
4494     case "$cpu" in
4495         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4496             disable fast_clz
4497         ;;
4498     esac
4499
4500 fi
4501
4502 check_ldflags -Wl,--as-needed
4503
4504 if check_func dlopen; then
4505     ldl=
4506 elif check_func dlopen -ldl; then
4507     ldl=-ldl
4508 fi
4509
4510 if ! disabled network; then
4511     check_func getaddrinfo $network_extralibs
4512     check_func getservbyport $network_extralibs
4513     check_func inet_aton $network_extralibs
4514
4515     check_type netdb.h "struct addrinfo"
4516     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4517     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4518     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4519     check_type poll.h "struct pollfd"
4520     check_type netinet/sctp.h "struct sctp_event_subscribe"
4521     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4522     check_type netinet/in.h "struct sockaddr_in6"
4523     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4524     check_type "sys/types.h sys/socket.h" socklen_t
4525
4526     # Prefer arpa/inet.h over winsock2
4527     if check_header arpa/inet.h ; then
4528         check_func closesocket
4529     elif check_header winsock2.h ; then
4530         check_func_headers winsock2.h closesocket -lws2 &&
4531             network_extralibs="-lws2" ||
4532         { check_func_headers winsock2.h closesocket -lws2_32 &&
4533             network_extralibs="-lws2_32"; } || disable winsock2_h network
4534         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4535
4536         check_type ws2tcpip.h socklen_t
4537         check_type ws2tcpip.h "struct addrinfo"
4538         check_type ws2tcpip.h "struct group_source_req"
4539         check_type ws2tcpip.h "struct ip_mreq_source"
4540         check_type ws2tcpip.h "struct ipv6_mreq"
4541         check_type winsock2.h "struct pollfd"
4542         check_struct winsock2.h "struct sockaddr" sa_len
4543         check_type ws2tcpip.h "struct sockaddr_in6"
4544         check_type ws2tcpip.h "struct sockaddr_storage"
4545     else
4546         disable network
4547     fi
4548 fi
4549
4550 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4551 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4552 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4553 check_builtin sarestart signal.h "SA_RESTART"
4554 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4555
4556 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4557 check_func  ${malloc_prefix}memalign            && enable memalign
4558 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4559
4560 check_func  access
4561 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4562 check_func  fcntl
4563 check_func  fork
4564 check_func  gethrtime
4565 check_func  getopt
4566 check_func  getrusage
4567 check_func  gettimeofday
4568 check_func  isatty
4569 check_func  localtime_r
4570 check_func  mach_absolute_time
4571 check_func  mkstemp
4572 check_func  mmap
4573 check_func  mprotect
4574 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4575 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4576 check_func  sched_getaffinity
4577 check_func  setrlimit
4578 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4579 check_func  strerror_r
4580 check_func  sysconf
4581 check_func  sysctl
4582 check_func  usleep
4583
4584 check_func_headers conio.h kbhit
4585 check_func_headers io.h setmode
4586 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4587 check_func_headers stdlib.h getenv
4588
4589 check_func_headers windows.h CoTaskMemFree -lole32
4590 check_func_headers windows.h GetProcessAffinityMask
4591 check_func_headers windows.h GetProcessTimes
4592 check_func_headers windows.h GetSystemTimeAsFileTime
4593 check_func_headers windows.h MapViewOfFile
4594 check_func_headers windows.h PeekNamedPipe
4595 check_func_headers windows.h SetConsoleTextAttribute
4596 check_func_headers windows.h Sleep
4597 check_func_headers windows.h VirtualAlloc
4598 check_func_headers glob.h glob
4599 enabled xlib &&
4600     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4601
4602 check_header cl/cl.h
4603 check_header direct.h
4604 check_header dlfcn.h
4605 check_header dxva.h
4606 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4607 check_header io.h
4608 check_header libcrystalhd/libcrystalhd_if.h
4609 check_header mach/mach_time.h
4610 check_header malloc.h
4611 check_header poll.h
4612 check_header sys/mman.h
4613 check_header sys/param.h
4614 check_header sys/resource.h
4615 check_header sys/select.h
4616 check_header sys/time.h
4617 check_header sys/un.h
4618 check_header termios.h
4619 check_header unistd.h
4620 check_header vdpau/vdpau.h
4621 check_header vdpau/vdpau_x11.h
4622 check_header VideoDecodeAcceleration/VDADecoder.h
4623 check_header windows.h
4624 check_header X11/extensions/XvMClib.h
4625 check_header asm/types.h
4626
4627 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4628 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4629 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4630
4631 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4632
4633 if ! disabled w32threads && ! enabled pthreads; then
4634     check_func_headers "windows.h process.h" _beginthreadex &&
4635         enable w32threads || disable w32threads
4636 fi
4637
4638 # check for some common methods of building with pthread support
4639 # do this before the optional library checks as some of them require pthreads
4640 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4641     enable pthreads
4642     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4643         add_cflags -pthread
4644         add_extralibs -pthread
4645     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4646         add_cflags -pthreads
4647         add_extralibs -pthreads
4648     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
4649         add_cflags -ldl -pthread
4650         add_extralibs -ldl -pthread
4651     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4652         add_extralibs -lpthreadGC2
4653     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4654         :
4655     elif ! check_func pthread_join && ! check_func pthread_create; then
4656         disable pthreads
4657     fi
4658     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4659 fi
4660
4661
4662 if enabled pthreads; then
4663   check_func pthread_cancel
4664 fi
4665
4666 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4667 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4668
4669 check_lib math.h sin -lm && LIBM="-lm"
4670 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4671
4672 atan2f_args=2
4673 ldexpf_args=2
4674 powf_args=2
4675 fminf_args=2
4676
4677 for func in $MATH_FUNCS; do
4678     eval check_mathfunc $func \${${func}_args:-1}
4679 done
4680
4681 # these are off by default, so fail if requested and not available
4682 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4683 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4684                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4685                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4686 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4687 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4688 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4689 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4690 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4691 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4692 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4693 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4694 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4695 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4696                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4697                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4698 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4699 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4700 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4701 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"
4702 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4703 enabled fontconfig        && enable libfontconfig
4704 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4705 enabled libfreetype       && require_libfreetype
4706 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4707 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4708                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4709                                done || die "ERROR: libgsm not found"; }
4710 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4711 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4712 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4713 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4714 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4715 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4716 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4717 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4718                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4719                                die "ERROR: libopenjpeg not found"; }
4720 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4721 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4722 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4723 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4724 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4725 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4726 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4727 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4728 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4729 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4730     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4731     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4732 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4733 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4734                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4735                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4736 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4737 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4738 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4739 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4740 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4741 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4742 enabled libvpx            && {
4743     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4744                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4745     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 ||
4746                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4747     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4748     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_SVC" -lvpx || disable libvpx_vp9_encoder; } }
4749 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4750 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4751 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4752                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4753                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4754 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4755                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4756                                die "ERROR: libx265 version must be >= 17."; }
4757 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4758 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4759 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4760 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4761 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4762                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4763                                die "ERROR: openal not found"; } &&
4764                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4765                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4766 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4767                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4768                                die "ERROR: opencl not found"; } &&
4769                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4770                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4771                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4772 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4773                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4774                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4775                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4776                                die "ERROR: opengl not found."
4777                              }
4778 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4779                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4780                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4781                                die "ERROR: openssl not found"; }
4782 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4783
4784 if enabled gnutls; then
4785     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4786     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4787 fi
4788
4789 # libdc1394 check
4790 if enabled libdc1394; then
4791     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4792         enable libdc1394_2; } ||
4793     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4794         enable libdc1394_1; } ||
4795     die "ERROR: No version of libdc1394 found "
4796 fi
4797
4798 SDL_CONFIG="${cross_prefix}sdl-config"
4799 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4800     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4801     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4802     enable sdl
4803 else
4804   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4805     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4806     sdl_libs=$("${SDL_CONFIG}" --libs)
4807     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4808     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4809     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4810     enable sdl
4811   fi
4812 fi
4813 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4814
4815 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4816 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4817 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4818 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4819 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4820
4821 check_header linux/fb.h
4822 check_header linux/videodev.h
4823 check_header linux/videodev2.h
4824 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4825
4826 check_header sys/videoio.h
4827
4828 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4829 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4830 # w32api 3.12 had it defined wrong
4831 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4832
4833 check_type "dshow.h" IBaseFilter
4834
4835 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4836 { check_header dev/bktr/ioctl_meteor.h &&
4837   check_header dev/bktr/ioctl_bt848.h; } ||
4838 { check_header machine/ioctl_meteor.h &&
4839   check_header machine/ioctl_bt848.h; } ||
4840 { check_header dev/video/meteor/ioctl_meteor.h &&
4841   check_header dev/video/bktr/ioctl_bt848.h; } ||
4842 check_header dev/ic/bt8xx.h
4843
4844 check_header sndio.h
4845 if check_struct sys/soundcard.h audio_buf_info bytes; then
4846     enable_safe sys/soundcard.h
4847 else
4848     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4849     #include <sys/soundcard.h>
4850     audio_buf_info abc;
4851 EOF
4852 fi
4853 check_header soundcard.h
4854
4855 enabled_any alsa_indev alsa_outdev &&
4856     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4857
4858 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4859     check_func jack_port_get_latency_range -ljack
4860
4861 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4862
4863 if enabled libcdio; then
4864     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4865     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4866     die "ERROR: libcdio-paranoia not found"
4867 fi
4868
4869 enabled xlib &&
4870     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
4871
4872 enabled x11grab                                           &&
4873 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4874 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4875 { enabled xlib || die "ERROR: Xlib not found"; }
4876
4877 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
4878
4879 enabled dxva2api_h &&
4880     check_cc <<EOF && enable dxva2api_cobj
4881 #define _WIN32_WINNT 0x0600
4882 #define COBJMACROS
4883 #include <windows.h>
4884 #include <d3d9.h>
4885 #include <dxva2api.h>
4886 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
4887 EOF
4888
4889 enabled vaapi &&
4890     check_lib va/va.h vaInitialize -lva ||
4891     disable vaapi
4892
4893 enabled vdpau &&
4894     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4895     disable vdpau
4896
4897 enabled vdpau && enabled xlib &&
4898     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4899     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
4900     enable vdpau_x11
4901
4902 # Funny iconv installations are not unusual, so check it after all flags have been set
4903 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4904
4905 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4906
4907 # add some useful compiler flags if supported
4908 check_cflags -Wdeclaration-after-statement
4909 check_cflags -Wall
4910 check_cflags -Wdisabled-optimization
4911 check_cflags -Wpointer-arith
4912 check_cflags -Wredundant-decls
4913 check_cflags -Wwrite-strings
4914 check_cflags -Wtype-limits
4915 check_cflags -Wundef
4916 check_cflags -Wmissing-prototypes
4917 check_cflags -Wno-pointer-to-int-cast
4918 check_cflags -Wstrict-prototypes
4919 check_cflags -Wempty-body
4920 enabled extra_warnings && check_cflags -Winline
4921
4922 check_disable_warning(){
4923     warning_flag=-W${1#-Wno-}
4924     test_cflags $warning_flag && add_cflags $1
4925 }
4926
4927 check_disable_warning -Wno-parentheses
4928 check_disable_warning -Wno-switch
4929 check_disable_warning -Wno-format-zero-length
4930 check_disable_warning -Wno-pointer-sign
4931
4932 # add some linker flags
4933 check_ldflags -Wl,--warn-common
4934 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4935 enabled rpath && add_ldflags -Wl,-rpath,$libdir
4936 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4937
4938 # add some strip flags
4939 # -wN '..@*' is more selective than -x, but not available everywhere.
4940 check_stripflags -wN \'..@*\' || check_stripflags -x
4941
4942 enabled neon_clobber_test &&
4943     check_ldflags -Wl,--wrap,avcodec_open2              \
4944                   -Wl,--wrap,avcodec_decode_audio4      \
4945                   -Wl,--wrap,avcodec_decode_video2      \
4946                   -Wl,--wrap,avcodec_decode_subtitle2   \
4947                   -Wl,--wrap,avcodec_encode_audio2      \
4948                   -Wl,--wrap,avcodec_encode_video2      \
4949                   -Wl,--wrap,avcodec_encode_subtitle    \
4950                   -Wl,--wrap,swr_convert                \
4951                   -Wl,--wrap,avresample_convert ||
4952     disable neon_clobber_test
4953
4954 enabled xmm_clobber_test &&
4955     check_ldflags -Wl,--wrap,avcodec_open2              \
4956                   -Wl,--wrap,avcodec_decode_audio4      \
4957                   -Wl,--wrap,avcodec_decode_video2      \
4958                   -Wl,--wrap,avcodec_decode_subtitle2   \
4959                   -Wl,--wrap,avcodec_encode_audio2      \
4960                   -Wl,--wrap,avcodec_encode_video       \
4961                   -Wl,--wrap,avcodec_encode_video2      \
4962                   -Wl,--wrap,avcodec_encode_subtitle    \
4963                   -Wl,--wrap,swr_convert                \
4964                   -Wl,--wrap,avresample_convert         \
4965                   -Wl,--wrap,sws_scale ||
4966     disable xmm_clobber_test
4967
4968 echo "X{};" > $TMPV
4969 if test_ldflags -Wl,--version-script,$TMPV; then
4970     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4971     check_cc <<EOF && enable symver_asm_label
4972 void ff_foo(void) __asm__ ("av_foo@VERSION");
4973 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4974 EOF
4975     check_cc <<EOF && enable symver_gnu_asm
4976 __asm__(".symver ff_foo,av_foo@VERSION");
4977 void ff_foo(void) {}
4978 EOF
4979 fi
4980
4981 if [ -z "$optflags" ]; then
4982     if enabled small; then
4983         optflags=$cflags_size
4984     elif enabled optimizations; then
4985         optflags=$cflags_speed
4986     else
4987         optflags=$cflags_noopt
4988     fi
4989 fi
4990
4991 check_optflags(){
4992     check_cflags "$@"
4993     enabled lto && check_ldflags "$@"
4994 }
4995
4996
4997 if enabled lto; then
4998     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4999     check_cflags  -flto
5000     check_ldflags -flto $cpuflags
5001     disable inline_asm_direct_symbol_refs
5002 fi
5003
5004 check_optflags $optflags
5005 check_optflags -fno-math-errno
5006 check_optflags -fno-signed-zeros
5007
5008 enabled ftrapv && check_cflags -ftrapv
5009
5010 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
5011 int x;
5012 EOF
5013
5014
5015 if enabled icc; then
5016     # Just warnings, no remarks
5017     check_cflags -w1
5018     # -wd: Disable following warnings
5019     # 144, 167, 556: -Wno-pointer-sign
5020     # 188: enumerated type mixed with another type
5021     # 1292: attribute "foo" ignored
5022     # 1419: external declaration in primary source file
5023     # 10006: ignoring unknown option -fno-signed-zeros
5024     # 10148: ignoring unknown option -Wno-parentheses
5025     # 10156: ignoring option '-W'; no argument required
5026     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
5027     # 11030: Warning unknown option --as-needed
5028     # 10156: ignoring option '-export'; no argument required
5029     check_ldflags -wd10156,11030
5030     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5031     enable ebp_available
5032     # The test above does not test linking
5033     enabled lto && disable symver_asm_label
5034     if enabled x86_32; then
5035         icc_version=$($cc -dumpversion)
5036         test ${icc_version%%.*} -ge 11 &&
5037             check_cflags -falign-stack=maintain-16-byte ||
5038             disable aligned_stack
5039     fi
5040 elif enabled ccc; then
5041     # disable some annoying warnings
5042     add_cflags -msg_disable bitnotint
5043     add_cflags -msg_disable mixfuncvoid
5044     add_cflags -msg_disable nonstandcast
5045     add_cflags -msg_disable unsupieee
5046 elif enabled gcc; then
5047     check_optflags -fno-tree-vectorize
5048     check_cflags -Werror=implicit-function-declaration
5049     check_cflags -Werror=missing-prototypes
5050     check_cflags -Werror=return-type
5051     check_cflags -Werror=vla
5052     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5053 elif enabled llvm_gcc; then
5054     check_cflags -mllvm -stack-alignment=16
5055 elif enabled clang; then
5056     check_cflags -mllvm -stack-alignment=16
5057     check_cflags -Qunused-arguments
5058     check_cflags -Werror=implicit-function-declaration
5059     check_cflags -Werror=missing-prototypes
5060     check_cflags -Werror=return-type
5061 elif enabled cparser; then
5062     add_cflags -Wno-missing-variable-declarations
5063     add_cflags -Wno-empty-statement
5064 elif enabled armcc; then
5065     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5066     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5067     # 2523: use of inline assembler is deprecated
5068     add_cflags -W${armcc_opt},--diag_suppress=2523
5069     add_cflags -W${armcc_opt},--diag_suppress=1207
5070     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5071     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5072     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5073     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5074 elif enabled tms470; then
5075     add_cflags -pds=824 -pds=837
5076     disable inline_asm
5077 elif enabled pathscale; then
5078     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5079 elif enabled_any msvc icl; then
5080     enabled x86_32 && disable aligned_stack
5081     enabled_all x86_32 debug && add_cflags -Oy-
5082     enabled debug && add_ldflags -debug
5083     enable pragma_deprecated
5084     if enabled icl; then
5085         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5086         # (correctly) on icl 13.x.
5087         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5088             add_cflags -Qansi-alias
5089         # Some inline asm is not compilable in debug
5090         if enabled debug; then
5091             disable ebp_available
5092             disable ebx_available
5093         fi
5094     fi
5095     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 onwards actually has log2.
5096     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5097 fi
5098
5099 case $as_type in
5100     clang)
5101         add_asflags -Qunused-arguments
5102     ;;
5103 esac
5104
5105 case $ld_type in
5106     clang)
5107         check_ldflags -Qunused-arguments
5108     ;;
5109 esac
5110
5111 case $target_os in
5112     osf1)
5113         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5114     ;;
5115     plan9)
5116         add_cppflags -Dmain=plan9_main
5117     ;;
5118 esac
5119
5120 enable frame_thread_encoder
5121
5122 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5123
5124 check_deps $CONFIG_LIST       \
5125            $CONFIG_EXTRA      \
5126            $HAVE_LIST         \
5127            $ALL_COMPONENTS    \
5128
5129 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"
5130
5131
5132 if test $target_os = "haiku"; then
5133     disable memalign
5134     disable posix_memalign
5135 fi
5136
5137 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5138     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
5139     enable dxva2_lib
5140
5141 ! enabled_any memalign posix_memalign aligned_malloc &&
5142     enabled_any $need_memalign && enable memalign_hack
5143
5144 # add_dep lib dep
5145 # -> enable ${lib}_deps_${dep}
5146 # -> add $dep to ${lib}_deps only once
5147 add_dep() {
5148     lib=$1
5149     dep=$2
5150     enabled "${lib}_deps_${dep}" && return 0
5151     enable  "${lib}_deps_${dep}"
5152     prepend "${lib}_deps" $dep
5153 }
5154
5155 # merge deps lib components
5156 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5157 merge_deps() {
5158     lib=$1
5159     shift
5160     for comp in $*; do
5161         enabled $comp || continue
5162         eval "dep=\"\$${comp}_deps\""
5163         for d in $dep; do
5164             add_dep $lib $d
5165         done
5166     done
5167 }
5168
5169 merge_deps libavfilter $FILTER_LIST
5170
5171 for thread in $THREADS_LIST; do
5172     if enabled $thread; then
5173         test -n "$thread_type" &&
5174             die "ERROR: Only one thread type must be selected." ||
5175             thread_type="$thread"
5176     fi
5177 done
5178
5179 # conditional library dependencies, in linking order
5180 enabled aconvert_filter     && prepend avfilter_deps "swresample"
5181 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5182 enabled aresample_filter    && prepend avfilter_deps "swresample"
5183 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5184 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5185 enabled decimate_filter     && prepend avfilter_deps "avcodec"
5186 enabled deshake_filter      && prepend avfilter_deps "avcodec"
5187 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5188 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5189 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5190 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5191 enabled mp_filter           && prepend avfilter_deps "avcodec"
5192 enabled pan_filter          && prepend avfilter_deps "swresample"
5193 enabled pp_filter           && prepend avfilter_deps "postproc"
5194 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5195 enabled resample_filter && prepend avfilter_deps "avresample"
5196 enabled sab_filter          && prepend avfilter_deps "swscale"
5197 enabled scale_filter    && prepend avfilter_deps "swscale"
5198 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5199 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5200 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5201
5202 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5203
5204 enabled opus_decoder    && prepend avcodec_deps "swresample"
5205
5206 expand_deps(){
5207     lib_deps=${1}_deps
5208     eval "deps=\$$lib_deps"
5209     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5210     unique $lib_deps
5211 }
5212
5213 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5214 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5215
5216 map 'expand_deps $v' $LIBRARY_LIST
5217
5218 echo "install prefix            $prefix"
5219 echo "source path               $source_path"
5220 echo "C compiler                $cc"
5221 echo "C library                 $libc_type"
5222 if test "$host_cc" != "$cc"; then
5223     echo "host C compiler           $host_cc"
5224     echo "host C library            $host_libc_type"
5225 fi
5226 echo "ARCH                      $arch ($cpu)"
5227 if test "$build_suffix" != ""; then
5228     echo "build suffix              $build_suffix"
5229 fi
5230 if test "$progs_suffix" != ""; then
5231     echo "progs suffix              $progs_suffix"
5232 fi
5233 if test "$extra_version" != ""; then
5234     echo "version string suffix     $extra_version"
5235 fi
5236 echo "big-endian                ${bigendian-no}"
5237 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5238 if enabled x86; then
5239     echo "${yasmexe}                      ${yasm-no}"
5240     echo "MMX enabled               ${mmx-no}"
5241     echo "MMXEXT enabled            ${mmxext-no}"
5242     echo "3DNow! enabled            ${amd3dnow-no}"
5243     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5244     echo "SSE enabled               ${sse-no}"
5245     echo "SSSE3 enabled             ${ssse3-no}"
5246     echo "AVX enabled               ${avx-no}"
5247     echo "XOP enabled               ${xop-no}"
5248     echo "FMA3 enabled              ${fma3-no}"
5249     echo "FMA4 enabled              ${fma4-no}"
5250     echo "i686 features enabled     ${i686-no}"
5251     echo "CMOV is fast              ${fast_cmov-no}"
5252     echo "EBX available             ${ebx_available-no}"
5253     echo "EBP available             ${ebp_available-no}"
5254 fi
5255 if enabled aarch64; then
5256     echo "NEON enabled              ${neon-no}"
5257     echo "VFP enabled               ${vfp-no}"
5258 fi
5259 if enabled arm; then
5260     echo "ARMv5TE enabled           ${armv5te-no}"
5261     echo "ARMv6 enabled             ${armv6-no}"
5262     echo "ARMv6T2 enabled           ${armv6t2-no}"
5263     echo "VFP enabled               ${vfp-no}"
5264     echo "NEON enabled              ${neon-no}"
5265     echo "THUMB enabled             ${thumb-no}"
5266 fi
5267 if enabled mips; then
5268     echo "MIPS FPU enabled          ${mipsfpu-no}"
5269     echo "MIPS32R2 enabled          ${mips32r2-no}"
5270     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5271     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5272 fi
5273 if enabled ppc; then
5274     echo "AltiVec enabled           ${altivec-no}"
5275     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5276     echo "PPC VSX optimizations     ${vsx-no}"
5277     echo "dcbzl available           ${dcbzl-no}"
5278 fi
5279 echo "debug symbols             ${debug-no}"
5280 echo "strip symbols             ${stripping-no}"
5281 echo "optimize for size         ${small-no}"
5282 echo "optimizations             ${optimizations-no}"
5283 echo "static                    ${static-no}"
5284 echo "shared                    ${shared-no}"
5285 echo "postprocessing support    ${postproc-no}"
5286 echo "new filter support        ${avfilter-no}"
5287 echo "network support           ${network-no}"
5288 echo "threading support         ${thread_type-no}"
5289 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5290 echo "SDL support               ${sdl-no}"
5291 echo "opencl enabled            ${opencl-no}"
5292 echo "libzvbi enabled           ${libzvbi-no}"
5293 echo "texi2html enabled         ${texi2html-no}"
5294 echo "perl enabled              ${perl-no}"
5295 echo "pod2man enabled           ${pod2man-no}"
5296 echo "makeinfo enabled          ${makeinfo-no}"
5297 test -n "$random_seed" &&
5298     echo "random seed               ${random_seed}"
5299 echo
5300
5301 echo "External libraries:"
5302 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5303 echo
5304
5305 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5306     echo "Enabled ${type}s:"
5307     eval list=\$$(toupper $type)_LIST
5308     print_enabled '_*' $list | print_3_columns
5309     echo
5310 done
5311
5312 license="LGPL version 2.1 or later"
5313 if enabled nonfree; then
5314     license="nonfree and unredistributable"
5315 elif enabled gplv3; then
5316     license="GPL version 3 or later"
5317 elif enabled lgplv3; then
5318     license="LGPL version 3 or later"
5319 elif enabled gpl; then
5320     license="GPL version 2 or later"
5321 fi
5322
5323 echo "License: $license"
5324
5325 echo "Creating config.mak, config.h, and doc/config.texi..."
5326
5327 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5328
5329 enabled stripping || strip="echo skipping strip"
5330
5331 config_files="$TMPH config.mak doc/config.texi"
5332
5333 cat > config.mak <<EOF
5334 # Automatically generated by configure - do not modify!
5335 ifndef FFMPEG_CONFIG_MAK
5336 FFMPEG_CONFIG_MAK=1
5337 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5338 prefix=$prefix
5339 LIBDIR=\$(DESTDIR)$libdir
5340 SHLIBDIR=\$(DESTDIR)$shlibdir
5341 INCDIR=\$(DESTDIR)$incdir
5342 BINDIR=\$(DESTDIR)$bindir
5343 DATADIR=\$(DESTDIR)$datadir
5344 DOCDIR=\$(DESTDIR)$docdir
5345 MANDIR=\$(DESTDIR)$mandir
5346 SRC_PATH=$source_path
5347 ifndef MAIN_MAKEFILE
5348 SRC_PATH:=\$(SRC_PATH:.%=..%)
5349 endif
5350 CC_IDENT=$cc_ident
5351 ARCH=$arch
5352 CC=$cc
5353 CXX=$cxx
5354 AS=$as
5355 LD=$ld
5356 DEPCC=$dep_cc
5357 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5358 DEPAS=$as
5359 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5360 YASM=$yasmexe
5361 DEPYASM=$yasmexe
5362 AR=$ar
5363 ARFLAGS=$arflags
5364 AR_O=$ar_o
5365 RANLIB=$ranlib
5366 STRIP=$strip
5367 CP=cp -p
5368 LN_S=$ln_s
5369 CPPFLAGS=$CPPFLAGS
5370 CFLAGS=$CFLAGS
5371 CXXFLAGS=$CXXFLAGS
5372 ASFLAGS=$ASFLAGS
5373 AS_C=$AS_C
5374 AS_O=$AS_O
5375 CC_C=$CC_C
5376 CC_E=$CC_E
5377 CC_O=$CC_O
5378 CXX_C=$CXX_C
5379 CXX_O=$CXX_O
5380 LD_O=$LD_O
5381 LD_LIB=$LD_LIB
5382 LD_PATH=$LD_PATH
5383 DLLTOOL=$dlltool
5384 WINDRES=$windres
5385 DEPWINDRES=$dep_cc
5386 LDFLAGS=$LDFLAGS
5387 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5388 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5389 YASMFLAGS=$YASMFLAGS
5390 BUILDSUF=$build_suffix
5391 PROGSSUF=$progs_suffix
5392 FULLNAME=$FULLNAME
5393 LIBPREF=$LIBPREF
5394 LIBSUF=$LIBSUF
5395 LIBNAME=$LIBNAME
5396 SLIBPREF=$SLIBPREF
5397 SLIBSUF=$SLIBSUF
5398 EXESUF=$EXESUF
5399 EXTRA_VERSION=$extra_version
5400 CCDEP=$CCDEP
5401 CXXDEP=$CXXDEP
5402 CCDEP_FLAGS=$CCDEP_FLAGS
5403 ASDEP=$ASDEP
5404 ASDEP_FLAGS=$ASDEP_FLAGS
5405 CC_DEPFLAGS=$CC_DEPFLAGS
5406 AS_DEPFLAGS=$AS_DEPFLAGS
5407 HOSTCC=$host_cc
5408 HOSTLD=$host_ld
5409 HOSTCFLAGS=$host_cflags
5410 HOSTCPPFLAGS=$host_cppflags
5411 HOSTEXESUF=$HOSTEXESUF
5412 HOSTLDFLAGS=$host_ldflags
5413 HOSTLIBS=$host_libs
5414 DEPHOSTCC=$host_cc
5415 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5416 HOSTCCDEP=$HOSTCCDEP
5417 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5418 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5419 HOSTCC_C=$HOSTCC_C
5420 HOSTCC_O=$HOSTCC_O
5421 HOSTLD_O=$HOSTLD_O
5422 TARGET_EXEC=$target_exec $target_exec_args
5423 TARGET_PATH=$target_path
5424 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5425 CFLAGS-ffplay=$sdl_cflags
5426 ZLIB=$($ldflags_filter -lz)
5427 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5428 EXTRALIBS=$extralibs
5429 COMPAT_OBJS=$compat_objs
5430 EXEOBJS=$exeobjs
5431 INSTALL=$install
5432 LIBTARGET=${LIBTARGET}
5433 SLIBNAME=${SLIBNAME}
5434 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5435 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5436 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5437 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5438 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5439 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5440 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5441 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5442 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5443 NOREDZONE_FLAGS=$noredzone_flags
5444 EOF
5445
5446 get_version(){
5447     lcname=lib${1}
5448     name=$(toupper $lcname)
5449     file=$source_path/$lcname/version.h
5450     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5451     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5452     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5453     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5454     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5455     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5456 }
5457
5458 map 'get_version $v' $LIBRARY_LIST
5459
5460 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5461
5462 print_program_libs(){
5463     eval "program_libs=\$${1}_libs"
5464     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5465 }
5466
5467 map 'print_program_libs $v' $PROGRAM_LIST
5468
5469 cat > $TMPH <<EOF
5470 /* Automatically generated by configure - do not modify! */
5471 #ifndef FFMPEG_CONFIG_H
5472 #define FFMPEG_CONFIG_H
5473 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5474 #define FFMPEG_LICENSE "$(c_escape $license)"
5475 #define CONFIG_THIS_YEAR 2014
5476 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5477 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5478 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5479 #define av_restrict $_restrict
5480 #define EXTERN_PREFIX "${extern_prefix}"
5481 #define EXTERN_ASM ${extern_prefix}
5482 #define BUILDSUF "$build_suffix"
5483 #define SLIBSUF "$SLIBSUF"
5484 #define HAVE_MMX2 HAVE_MMXEXT
5485 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
5486 EOF
5487
5488 test -n "$assert_level" &&
5489     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5490
5491 test -n "$malloc_prefix" &&
5492     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5493
5494 if enabled yasm; then
5495     append config_files $TMPASM
5496     printf '' >$TMPASM
5497 fi
5498
5499 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5500
5501
5502 mkdir -p doc
5503 echo "@c auto-generated by configure" > doc/config.texi
5504
5505 print_config ARCH_   "$config_files" $ARCH_LIST
5506 print_config HAVE_   "$config_files" $HAVE_LIST
5507 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5508                                      $CONFIG_EXTRA      \
5509                                      $ALL_COMPONENTS    \
5510
5511 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5512 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5513
5514 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5515 cp_if_changed $TMPH config.h
5516 touch .config
5517
5518 enabled yasm && cp_if_changed $TMPASM config.asm
5519
5520 cat > $TMPH <<EOF
5521 /* Generated by ffconf */
5522 #ifndef AVUTIL_AVCONFIG_H
5523 #define AVUTIL_AVCONFIG_H
5524 EOF
5525
5526 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5527
5528 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5529
5530 cp_if_changed $TMPH libavutil/avconfig.h
5531
5532 if test -n "$WARNINGS"; then
5533     printf "\n$WARNINGS"
5534     enabled fatal_warnings && exit 1
5535 fi
5536
5537 # build pkg-config files
5538
5539 lib_version(){
5540     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
5541 }
5542
5543 pkgconfig_generate(){
5544     name=$1
5545     shortname=${name#lib}${build_suffix}
5546     comment=$2
5547     version=$3
5548     libs=$4
5549     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5550     requires=${requires%, }
5551     enabled ${name#lib} || return 0
5552     mkdir -p $name
5553     cat <<EOF > $name/$name${build_suffix}.pc
5554 prefix=$prefix
5555 exec_prefix=\${prefix}
5556 libdir=$libdir
5557 includedir=$incdir
5558
5559 Name: $name
5560 Description: $comment
5561 Version: $version
5562 Requires: $(enabled shared || echo $requires)
5563 Requires.private: $(enabled shared && echo $requires)
5564 Conflicts:
5565 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5566 Libs.private: $(enabled shared && echo $libs)
5567 Cflags: -I\${includedir}
5568 EOF
5569
5570 mkdir -p doc/examples/pc-uninstalled
5571 includedir=${source_path}
5572 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5573     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5574 prefix=
5575 exec_prefix=
5576 libdir=\${pcfiledir}/../../../$name
5577 includedir=${includedir}
5578
5579 Name: $name
5580 Description: $comment
5581 Version: $version
5582 Requires: $requires
5583 Conflicts:
5584 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5585 Cflags: -I\${includedir}
5586 EOF
5587 }
5588
5589 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
5590 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
5591 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
5592 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
5593 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
5594 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
5595 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs"
5596 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
5597 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"