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