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 "$logfile" produced by configure as this will help
 420 solving the problem.
 421 EOF
 422     fi
 423     exit 1
 424 }
 425
 426 # Avoid locale weirdness, besides we really just want to translate ASCII.
 427 toupper(){
 428     echo "$@" | 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     isinf
1649     isnan
1650     ldexpf
1651     llrint
1652     llrintf
1653     log2
1654     log2f
1655     log10f
1656     lrint
1657     lrintf
1658     powf
1659     rint
1660     round
1661     roundf
1662     sinf
1663     trunc
1664     truncf
1665 "
1666
1667 SYSTEM_FUNCS="
1668     access
1669     aligned_malloc
1670     clock_gettime
1671     closesocket
1672     CommandLineToArgvW
1673     CoTaskMemFree
1674     CryptGenRandom
1675     dlopen
1676     fcntl
1677     flt_lim
1678     fork
1679     getaddrinfo
1680     gethrtime
1681     getopt
1682     GetProcessAffinityMask
1683     GetProcessMemoryInfo
1684     GetProcessTimes
1685     getrusage
1686     getservbyport
1687     GetSystemTimeAsFileTime
1688     gettimeofday
1689     glob
1690     glXGetProcAddress
1691     inet_aton
1692     isatty
1693     jack_port_get_latency_range
1694     kbhit
1695     localtime_r
1696     lzo1x_999_compress
1697     mach_absolute_time
1698     MapViewOfFile
1699     memalign
1700     mkstemp
1701     mmap
1702     mprotect
1703     nanosleep
1704     PeekNamedPipe
1705     posix_memalign
1706     pthread_cancel
1707     sched_getaffinity
1708     SetConsoleTextAttribute
1709     setmode
1710     setrlimit
1711     Sleep
1712     strerror_r
1713     sysconf
1714     sysctl
1715     usleep
1716     VirtualAlloc
1717     wglGetProcAddress
1718 "
1719
1720 TOOLCHAIN_FEATURES="
1721     asm_mod_q
1722     attribute_may_alias
1723     attribute_packed
1724     ebp_available
1725     ebx_available
1726     gnu_as
1727     gnu_windres
1728     ibm_asm
1729     inline_asm_labels
1730     inline_asm_nonlocal_labels
1731     inline_asm_direct_symbol_refs
1732     pragma_deprecated
1733     rsync_contimeout
1734     symver_asm_label
1735     symver_gnu_asm
1736     vfp_args
1737     xform_asm
1738     xmm_clobbers
1739 "
1740
1741 TYPES_LIST="
1742     socklen_t
1743     struct_addrinfo
1744     struct_group_source_req
1745     struct_ip_mreq_source
1746     struct_ipv6_mreq
1747     struct_pollfd
1748     struct_rusage_ru_maxrss
1749     struct_sctp_event_subscribe
1750     struct_sockaddr_in6
1751     struct_sockaddr_sa_len
1752     struct_sockaddr_storage
1753     struct_stat_st_mtim_tv_nsec
1754     struct_v4l2_frmivalenum_discrete
1755 "
1756
1757 HAVE_LIST="
1758     $ARCH_EXT_LIST
1759     $(add_suffix _external $ARCH_EXT_LIST)
1760     $(add_suffix _inline   $ARCH_EXT_LIST)
1761     $ARCH_FEATURES
1762     $ATOMICS_LIST
1763     $BUILTIN_LIST
1764     $HAVE_LIST_CMDLINE
1765     $HAVE_LIST_PUB
1766     $HEADERS_LIST
1767     $MATH_FUNCS
1768     $SYSTEM_FUNCS
1769     $THREADS_LIST
1770     $TOOLCHAIN_FEATURES
1771     $TYPES_LIST
1772     atomics_native
1773     dos_paths
1774     dxva2api_cobj
1775     dxva2_lib
1776     libc_msvcrt
1777     libdc1394_1
1778     libdc1394_2
1779     makeinfo
1780     perl
1781     pod2man
1782     sdl
1783     texi2html
1784     threads
1785     vdpau_x11
1786     xlib
1787 "
1788
1789 # options emitted with CONFIG_ prefix but not available on the command line
1790 CONFIG_EXTRA="
1791     aandcttables
1792     ac3dsp
1793     audio_frame_queue
1794     cabac
1795     dsputil
1796     exif
1797     frame_thread_encoder
1798     gcrypt
1799     golomb
1800     gplv3
1801     h263dsp
1802     h264chroma
1803     h264dsp
1804     h264pred
1805     h264qpel
1806     hpeldsp
1807     huffman
1808     intrax8
1809     lgplv3
1810     llviddsp
1811     lpc
1812     mpegaudio
1813     mpegaudiodsp
1814     mpegvideo
1815     mpegvideoenc
1816     nettle
1817     rangecoder
1818     riffdec
1819     riffenc
1820     rtpdec
1821     rtpenc_chain
1822     sinewin
1823     tpeldsp
1824     videodsp
1825     vp3dsp
1826 "
1827
1828 CMDLINE_SELECT="
1829     $ARCH_EXT_LIST
1830     $CONFIG_LIST
1831     $HAVE_LIST_CMDLINE
1832     $THREADS_LIST
1833     asm
1834     cross_compile
1835     debug
1836     extra_warnings
1837     logging
1838     lto
1839     optimizations
1840     rpath
1841     stripping
1842 "
1843
1844 PATHS_LIST="
1845     bindir
1846     datadir
1847     docdir
1848     incdir
1849     libdir
1850     mandir
1851     prefix
1852     shlibdir
1853 "
1854
1855 CMDLINE_SET="
1856     $PATHS_LIST
1857     ar
1858     arch
1859     as
1860     assert_level
1861     build_suffix
1862     cc
1863     cpu
1864     cross_prefix
1865     cxx
1866     dep_cc
1867     extra_version
1868     gas
1869     host_cc
1870     host_cflags
1871     host_ld
1872     host_ldflags
1873     host_libs
1874     host_os
1875     install
1876     ld
1877     logfile
1878     malloc_prefix
1879     nm
1880     optflags
1881     pkg_config
1882     pkg_config_flags
1883     progs_suffix
1884     random_seed
1885     ranlib
1886     samples
1887     strip
1888     sysinclude
1889     sysroot
1890     target_exec
1891     target_os
1892     target_path
1893     target_samples
1894     tempprefix
1895     toolchain
1896     valgrind
1897     yasmexe
1898 "
1899
1900 CMDLINE_APPEND="
1901     extra_cflags
1902     extra_cxxflags
1903     host_cppflags
1904 "
1905
1906 # code dependency declarations
1907
1908 # architecture extensions
1909
1910 armv5te_deps="arm"
1911 armv6_deps="arm"
1912 armv6t2_deps="arm"
1913 armv8_deps="aarch64"
1914 neon_deps_any="aarch64 arm"
1915 vfp_deps_any="aarch64 arm"
1916 vfpv3_deps="vfp"
1917
1918 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1919
1920 mipsfpu_deps="mips"
1921 mips32r2_deps="mips"
1922 mipsdspr1_deps="mips"
1923 mipsdspr2_deps="mips"
1924
1925 altivec_deps="ppc"
1926 ppc4xx_deps="ppc"
1927
1928 cpunop_deps="i686"
1929 x86_64_select="i686"
1930 x86_64_suggest="fast_cmov"
1931
1932 amd3dnow_deps="mmx"
1933 amd3dnowext_deps="amd3dnow"
1934 i686_deps="x86"
1935 mmx_deps="x86"
1936 mmxext_deps="mmx"
1937 sse_deps="mmxext"
1938 sse2_deps="sse"
1939 sse3_deps="sse2"
1940 ssse3_deps="sse3"
1941 sse4_deps="ssse3"
1942 sse42_deps="sse4"
1943 avx_deps="sse42"
1944 xop_deps="avx"
1945 fma3_deps="avx"
1946 fma4_deps="avx"
1947 avx2_deps="avx"
1948
1949 mmx_external_deps="yasm"
1950 mmx_inline_deps="inline_asm"
1951 mmx_suggest="mmx_external mmx_inline"
1952
1953 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1954     eval dep=\$${ext}_deps
1955     eval ${ext}_external_deps='"${dep}_external"'
1956     eval ${ext}_inline_deps='"${dep}_inline"'
1957     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1958 done
1959
1960 aligned_stack_if_any="aarch64 ppc x86"
1961 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1962 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1963 fast_unaligned_if_any="aarch64 ppc x86"
1964
1965 need_memalign="altivec neon sse"
1966
1967 # system capabilities
1968
1969 symver_if_any="symver_asm_label symver_gnu_asm"
1970
1971 # threading support
1972 atomics_gcc_if="sync_val_compare_and_swap"
1973 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1974 atomics_win32_if="MemoryBarrier"
1975 atomics_native_if_any="$ATOMICS_LIST"
1976 w32threads_deps="atomics_native"
1977 threads_if_any="$THREADS_LIST"
1978
1979 # subsystems
1980 dct_select="rdft"
1981 error_resilience_select="dsputil"
1982 frame_thread_encoder_deps="encoders threads"
1983 mdct_select="fft"
1984 rdft_select="fft"
1985 mpegaudio_select="mpegaudiodsp"
1986 mpegaudiodsp_select="dct"
1987 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1988 mpegvideoenc_select="dsputil mpegvideo"
1989
1990 # decoders / encoders
1991 aac_decoder_select="mdct sinewin"
1992 aac_encoder_select="audio_frame_queue mdct sinewin"
1993 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1994 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1995 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
1996 ac3_encoder_select="mdct ac3dsp dsputil"
1997 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1998 aic_decoder_select="dsputil golomb"
1999 alac_encoder_select="lpc"
2000 als_decoder_select="dsputil"
2001 amrnb_decoder_select="lsp"
2002 amrwb_decoder_select="lsp"
2003 amv_decoder_select="sp5x_decoder exif"
2004 amv_encoder_select="aandcttables"
2005 ape_decoder_select="dsputil"
2006 asv1_decoder_select="dsputil"
2007 asv1_encoder_select="dsputil"
2008 asv2_decoder_select="dsputil"
2009 asv2_encoder_select="dsputil"
2010 atrac1_decoder_select="mdct sinewin"
2011 atrac3_decoder_select="mdct"
2012 atrac3p_decoder_select="mdct sinewin"
2013 avrn_decoder_select="exif"
2014 bink_decoder_select="dsputil hpeldsp"
2015 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2016 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2017 cavs_decoder_select="dsputil golomb h264chroma videodsp"
2018 cllc_decoder_select="dsputil"
2019 comfortnoise_encoder_select="lpc"
2020 cook_decoder_select="dsputil mdct sinewin"
2021 cscd_decoder_select="lzo"
2022 cscd_decoder_suggest="zlib"
2023 dca_decoder_select="mdct"
2024 dirac_decoder_select="dsputil dwt golomb videodsp"
2025 dnxhd_decoder_select="dsputil"
2026 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
2027 dvvideo_decoder_select="dsputil"
2028 dvvideo_encoder_select="dsputil"
2029 dxa_decoder_select="zlib"
2030 eac3_decoder_select="ac3_decoder"
2031 eac3_encoder_select="ac3_encoder"
2032 eamad_decoder_select="aandcttables dsputil mpegvideo"
2033 eatgq_decoder_select="aandcttables"
2034 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
2035 exr_decoder_select="zlib"
2036 ffv1_decoder_select="golomb rangecoder"
2037 ffv1_encoder_select="rangecoder"
2038 ffvhuff_decoder_select="huffyuv_decoder"
2039 ffvhuff_encoder_select="huffyuv_encoder"
2040 fic_decoder_select="golomb"
2041 flac_decoder_select="golomb"
2042 flac_encoder_select="dsputil golomb lpc"
2043 flashsv_decoder_select="zlib"
2044 flashsv_encoder_select="zlib"
2045 flashsv2_encoder_select="zlib"
2046 flashsv2_decoder_select="zlib"
2047 flv_decoder_select="h263_decoder"
2048 flv_encoder_select="h263_encoder"
2049 fourxm_decoder_select="dsputil"
2050 fraps_decoder_select="dsputil huffman"
2051 g2m_decoder_select="dsputil zlib"
2052 g729_decoder_select="dsputil"
2053 h261_decoder_select="error_resilience mpegvideo"
2054 h261_encoder_select="aandcttables mpegvideoenc"
2055 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
2056 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2057 h263i_decoder_select="h263_decoder"
2058 h263p_encoder_select="h263_encoder"
2059 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2060 h264_decoder_suggest="error_resilience"
2061 hevc_decoder_select="cabac dsputil golomb videodsp"
2062 huffyuv_decoder_select="dsputil llviddsp"
2063 huffyuv_encoder_select="dsputil huffman llviddsp"
2064 iac_decoder_select="imc_decoder"
2065 imc_decoder_select="dsputil fft mdct sinewin"
2066 indeo3_decoder_select="hpeldsp"
2067 interplay_video_decoder_select="hpeldsp"
2068 jpegls_decoder_select="golomb mjpeg_decoder"
2069 jpegls_encoder_select="golomb"
2070 jv_decoder_select="dsputil"
2071 lagarith_decoder_select="dsputil"
2072 ljpeg_encoder_select="aandcttables mpegvideoenc"
2073 loco_decoder_select="golomb"
2074 mdec_decoder_select="dsputil error_resilience mpegvideo"
2075 metasound_decoder_select="lsp mdct sinewin"
2076 mimic_decoder_select="dsputil hpeldsp"
2077 mjpeg_decoder_select="dsputil hpeldsp exif"
2078 mjpeg_encoder_select="aandcttables mpegvideoenc"
2079 mjpegb_decoder_select="mjpeg_decoder"
2080 mlp_decoder_select="mlp_parser"
2081 motionpixels_decoder_select="dsputil"
2082 mp1_decoder_select="mpegaudio"
2083 mp1float_decoder_select="mpegaudio"
2084 mp2_decoder_select="mpegaudio"
2085 mp2float_decoder_select="mpegaudio"
2086 mp3_decoder_select="mpegaudio"
2087 mp3adu_decoder_select="mpegaudio"
2088 mp3adufloat_decoder_select="mpegaudio"
2089 mp3float_decoder_select="mpegaudio"
2090 mp3on4_decoder_select="mpegaudio"
2091 mp3on4float_decoder_select="mpegaudio"
2092 mpc7_decoder_select="dsputil mpegaudiodsp"
2093 mpc8_decoder_select="mpegaudiodsp"
2094 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2095 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2096 mpeg1video_decoder_select="error_resilience mpegvideo"
2097 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2098 mpeg2video_decoder_select="error_resilience mpegvideo"
2099 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2100 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2101 mpeg4_encoder_select="h263_encoder"
2102 msmpeg4v1_decoder_select="h263_decoder"
2103 msmpeg4v2_decoder_select="h263_decoder"
2104 msmpeg4v2_encoder_select="h263_encoder"
2105 msmpeg4v3_decoder_select="h263_decoder"
2106 msmpeg4v3_encoder_select="h263_encoder"
2107 mss2_decoder_select="error_resilience vc1_decoder"
2108 mxpeg_decoder_select="mjpeg_decoder"
2109 nellymoser_decoder_select="mdct sinewin"
2110 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2111 nuv_decoder_select="dsputil lzo"
2112 on2avc_decoder_select="mdct"
2113 opus_decoder_deps="swresample"
2114 png_decoder_select="zlib"
2115 png_encoder_select="dsputil zlib"
2116 prores_decoder_select="dsputil"
2117 prores_encoder_select="dsputil"
2118 qcelp_decoder_select="lsp"
2119 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2120 ra_144_encoder_select="audio_frame_queue lpc"
2121 ralf_decoder_select="golomb"
2122 rawvideo_decoder_select="dsputil"
2123 rtjpeg_decoder_select="dsputil"
2124 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2125 rv10_encoder_select="h263_encoder"
2126 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2127 rv20_encoder_select="h263_encoder"
2128 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2129 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2130 shorten_decoder_select="golomb"
2131 sipr_decoder_select="lsp"
2132 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2133 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2134 sonic_decoder_select="golomb rangecoder"
2135 sonic_encoder_select="golomb rangecoder"
2136 sonic_ls_encoder_select="golomb rangecoder"
2137 sp5x_decoder_select="mjpeg_decoder"
2138 svq1_decoder_select="hpeldsp"
2139 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2140 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2141 svq3_decoder_suggest="zlib"
2142 tak_decoder_select="dsputil"
2143 theora_decoder_select="vp3_decoder"
2144 thp_decoder_select="mjpeg_decoder"
2145 tiff_decoder_suggest="zlib"
2146 tiff_encoder_suggest="zlib"
2147 truehd_decoder_select="mlp_parser"
2148 truemotion2_decoder_select="dsputil"
2149 truespeech_decoder_select="dsputil"
2150 tscc_decoder_select="zlib"
2151 twinvq_decoder_select="mdct lsp sinewin"
2152 utvideo_decoder_select="dsputil"
2153 utvideo_encoder_select="dsputil huffman"
2154 vble_decoder_select="dsputil"
2155 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2156 vc1image_decoder_select="vc1_decoder"
2157 vorbis_decoder_select="mdct"
2158 vorbis_encoder_select="mdct"
2159 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2160 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2161 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2162 vp6a_decoder_select="vp6_decoder"
2163 vp6f_decoder_select="vp6_decoder"
2164 vp7_decoder_select="h264pred videodsp"
2165 vp8_decoder_select="h264pred videodsp"
2166 vp9_decoder_select="videodsp vp9_parser"
2167 webp_decoder_select="vp8_decoder"
2168 wmapro_decoder_select="mdct sinewin"
2169 wmav1_decoder_select="mdct sinewin"
2170 wmav1_encoder_select="mdct sinewin"
2171 wmav2_decoder_select="mdct sinewin"
2172 wmav2_encoder_select="mdct sinewin"
2173 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2174 wmv1_decoder_select="h263_decoder"
2175 wmv1_encoder_select="h263_encoder"
2176 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2177 wmv2_encoder_select="h263_encoder"
2178 wmv3_decoder_select="vc1_decoder"
2179 wmv3image_decoder_select="wmv3_decoder"
2180 zerocodec_decoder_select="zlib"
2181 zlib_decoder_select="zlib"
2182 zlib_encoder_select="zlib"
2183 zmbv_decoder_select="zlib"
2184 zmbv_encoder_select="zlib"
2185
2186 # hardware accelerators
2187 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2188 dxva2_deps="dxva2api_h"
2189 vaapi_deps="va_va_h"
2190 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2191 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2192 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2193 xvmc_deps="X11_extensions_XvMClib_h"
2194
2195 h263_vaapi_hwaccel_deps="vaapi"
2196 h263_vaapi_hwaccel_select="h263_decoder"
2197 h263_vdpau_hwaccel_deps="vdpau"
2198 h263_vdpau_hwaccel_select="h263_decoder"
2199 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2200 h264_dxva2_hwaccel_deps="dxva2"
2201 h264_dxva2_hwaccel_select="h264_decoder"
2202 h264_vaapi_hwaccel_deps="vaapi"
2203 h264_vaapi_hwaccel_select="h264_decoder"
2204 h264_vda_decoder_deps="vda"
2205 h264_vda_decoder_select="h264_decoder"
2206 h264_vda_hwaccel_deps="vda"
2207 h264_vda_hwaccel_select="h264_decoder"
2208 h264_vda_old_hwaccel_deps="vda"
2209 h264_vda_old_hwaccel_select="h264_decoder"
2210 h264_vdpau_decoder_deps="vdpau"
2211 h264_vdpau_decoder_select="h264_decoder"
2212 h264_vdpau_hwaccel_deps="vdpau"
2213 h264_vdpau_hwaccel_select="h264_decoder"
2214 mpeg_vdpau_decoder_deps="vdpau"
2215 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2216 mpeg_xvmc_hwaccel_deps="xvmc"
2217 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2218 mpeg1_vdpau_decoder_deps="vdpau"
2219 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2220 mpeg1_vdpau_hwaccel_deps="vdpau"
2221 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2222 mpeg1_xvmc_hwaccel_deps="xvmc"
2223 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2224 mpeg2_crystalhd_decoder_select="crystalhd"
2225 mpeg2_dxva2_hwaccel_deps="dxva2"
2226 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2227 mpeg2_vaapi_hwaccel_deps="vaapi"
2228 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2229 mpeg2_vdpau_hwaccel_deps="vdpau"
2230 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2231 mpeg2_xvmc_hwaccel_deps="xvmc"
2232 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2233 mpeg4_crystalhd_decoder_select="crystalhd"
2234 mpeg4_vaapi_hwaccel_deps="vaapi"
2235 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2236 mpeg4_vdpau_decoder_deps="vdpau"
2237 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2238 mpeg4_vdpau_hwaccel_deps="vdpau"
2239 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2240 msmpeg4_crystalhd_decoder_select="crystalhd"
2241 vc1_crystalhd_decoder_select="crystalhd"
2242 vc1_dxva2_hwaccel_deps="dxva2"
2243 vc1_dxva2_hwaccel_select="vc1_decoder"
2244 vc1_vaapi_hwaccel_deps="vaapi"
2245 vc1_vaapi_hwaccel_select="vc1_decoder"
2246 vc1_vdpau_decoder_deps="vdpau"
2247 vc1_vdpau_decoder_select="vc1_decoder"
2248 vc1_vdpau_hwaccel_deps="vdpau"
2249 vc1_vdpau_hwaccel_select="vc1_decoder"
2250 wmv3_crystalhd_decoder_select="crystalhd"
2251 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2252 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2253 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2254 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2255
2256 # parsers
2257 h264_parser_select="h264_decoder"
2258 hevc_parser_select="hevc_decoder"
2259 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2260 mpegvideo_parser_select="error_resilience mpegvideo"
2261 vc1_parser_select="mpegvideo"
2262
2263 # external libraries
2264 libaacplus_encoder_deps="libaacplus"
2265 libcelt_decoder_deps="libcelt"
2266 libfaac_encoder_deps="libfaac"
2267 libfaac_encoder_select="audio_frame_queue"
2268 libfdk_aac_decoder_deps="libfdk_aac"
2269 libfdk_aac_encoder_deps="libfdk_aac"
2270 libfdk_aac_encoder_select="audio_frame_queue"
2271 libgme_demuxer_deps="libgme"
2272 libgsm_decoder_deps="libgsm"
2273 libgsm_encoder_deps="libgsm"
2274 libgsm_ms_decoder_deps="libgsm"
2275 libgsm_ms_encoder_deps="libgsm"
2276 libilbc_decoder_deps="libilbc"
2277 libilbc_encoder_deps="libilbc"
2278 libmodplug_demuxer_deps="libmodplug"
2279 libmp3lame_encoder_deps="libmp3lame"
2280 libmp3lame_encoder_select="audio_frame_queue"
2281 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2282 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2283 libopencore_amrnb_encoder_select="audio_frame_queue"
2284 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2285 libopenjpeg_decoder_deps="libopenjpeg"
2286 libopenjpeg_encoder_deps="libopenjpeg"
2287 libopus_decoder_deps="libopus"
2288 libopus_encoder_deps="libopus"
2289 libopus_encoder_select="audio_frame_queue"
2290 libquvi_demuxer_deps="libquvi"
2291 libschroedinger_decoder_deps="libschroedinger"
2292 libschroedinger_encoder_deps="libschroedinger"
2293 libshine_encoder_deps="libshine"
2294 libshine_encoder_select="audio_frame_queue"
2295 libspeex_decoder_deps="libspeex"
2296 libspeex_encoder_deps="libspeex"
2297 libspeex_encoder_select="audio_frame_queue"
2298 libstagefright_h264_decoder_deps="libstagefright_h264"
2299 libtheora_encoder_deps="libtheora"
2300 libtwolame_encoder_deps="libtwolame"
2301 libvo_aacenc_encoder_deps="libvo_aacenc"
2302 libvo_aacenc_encoder_select="audio_frame_queue"
2303 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2304 libvorbis_decoder_deps="libvorbis"
2305 libvorbis_encoder_deps="libvorbis"
2306 libvorbis_encoder_select="audio_frame_queue"
2307 libvpx_vp8_decoder_deps="libvpx"
2308 libvpx_vp8_encoder_deps="libvpx"
2309 libvpx_vp9_decoder_deps="libvpx"
2310 libvpx_vp9_encoder_deps="libvpx"
2311 libwavpack_encoder_deps="libwavpack"
2312 libwebp_encoder_deps="libwebp"
2313 libx264_encoder_deps="libx264"
2314 libx264rgb_encoder_deps="libx264"
2315 libx265_encoder_deps="libx265"
2316 libxavs_encoder_deps="libxavs"
2317 libxvid_encoder_deps="libxvid"
2318 libutvideo_decoder_deps="libutvideo"
2319 libutvideo_encoder_deps="libutvideo"
2320 libzvbi_teletext_decoder_deps="libzvbi"
2321
2322 # demuxers / muxers
2323 ac3_demuxer_select="ac3_parser"
2324 asf_demuxer_select="riffdec"
2325 asf_muxer_select="riffenc"
2326 asf_stream_muxer_select="asf_muxer"
2327 avi_demuxer_select="riffdec exif"
2328 avi_muxer_select="riffenc"
2329 avisynth_demuxer_deps="avisynth"
2330 avisynth_demuxer_select="riffdec"
2331 caf_demuxer_select="riffdec"
2332 dirac_demuxer_select="dirac_parser"
2333 dts_demuxer_select="dca_parser"
2334 dtshd_demuxer_select="dca_parser"
2335 dxa_demuxer_select="riffdec"
2336 eac3_demuxer_select="ac3_parser"
2337 f4v_muxer_select="mov_muxer"
2338 flac_demuxer_select="flac_parser"
2339 hds_muxer_select="flv_muxer"
2340 hls_muxer_select="mpegts_muxer"
2341 image2_alias_pix_demuxer_select="image2_demuxer"
2342 image2_brender_pix_demuxer_select="image2_demuxer"
2343 ipod_muxer_select="mov_muxer"
2344 ismv_muxer_select="mov_muxer"
2345 libnut_demuxer_deps="libnut"
2346 libnut_muxer_deps="libnut"
2347 matroska_audio_muxer_select="matroska_muxer"
2348 matroska_demuxer_select="riffdec"
2349 matroska_demuxer_suggest="bzlib lzo zlib"
2350 matroska_muxer_select="riffenc"
2351 mmf_muxer_select="riffenc"
2352 mov_demuxer_select="riffdec"
2353 mov_demuxer_suggest="zlib"
2354 mov_muxer_select="riffenc rtpenc_chain"
2355 mp3_demuxer_select="mpegaudio_parser"
2356 mp4_muxer_select="mov_muxer"
2357 mpegts_muxer_select="adts_muxer latm_muxer"
2358 mpegtsraw_demuxer_select="mpegts_demuxer"
2359 mxf_d10_muxer_select="mxf_muxer"
2360 nut_muxer_select="riffenc"
2361 nuv_demuxer_select="riffdec"
2362 ogg_demuxer_select="golomb"
2363 psp_muxer_select="mov_muxer"
2364 rtp_demuxer_select="sdp_demuxer"
2365 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2366 rtsp_demuxer_select="http_protocol rtpdec"
2367 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2368 sap_demuxer_select="sdp_demuxer"
2369 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2370 sdp_demuxer_select="rtpdec"
2371 smoothstreaming_muxer_select="ismv_muxer"
2372 spdif_muxer_select="aac_parser"
2373 tak_demuxer_select="tak_parser"
2374 tg2_muxer_select="mov_muxer"
2375 tgp_muxer_select="mov_muxer"
2376 vobsub_demuxer_select="mpegps_demuxer"
2377 w64_demuxer_select="wav_demuxer"
2378 w64_muxer_select="wav_muxer"
2379 wav_demuxer_select="riffdec"
2380 wav_muxer_select="riffenc"
2381 webm_muxer_select="riffenc"
2382 wtv_demuxer_select="riffdec"
2383 wtv_muxer_select="riffenc"
2384 xmv_demuxer_select="riffdec"
2385 xwma_demuxer_select="riffdec"
2386
2387 # indevs / outdevs
2388 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2389 alsa_outdev_deps="alsa_asoundlib_h"
2390 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2391 avfoundation_indev_select="avfoundation"
2392 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2393 caca_outdev_deps="libcaca"
2394 decklink_outdev_deps="decklink pthreads"
2395 decklink_outdev_extralibs="-lstdc++"
2396 dshow_indev_deps="IBaseFilter"
2397 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2398 dv1394_indev_deps="dv1394"
2399 dv1394_indev_select="dv_demuxer"
2400 fbdev_indev_deps="linux_fb_h"
2401 fbdev_outdev_deps="linux_fb_h"
2402 gdigrab_indev_deps="CreateDIBSection"
2403 gdigrab_indev_extralibs="-lgdi32"
2404 gdigrab_indev_select="bmp_decoder"
2405 iec61883_indev_deps="libiec61883"
2406 jack_indev_deps="jack_jack_h sem_timedwait"
2407 lavfi_indev_deps="avfilter"
2408 libcdio_indev_deps="libcdio"
2409 libdc1394_indev_deps="libdc1394"
2410 libv4l2_indev_deps="libv4l2"
2411 openal_indev_deps="openal"
2412 opengl_outdev_deps="opengl"
2413 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2414 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2415 pulse_indev_deps="libpulse"
2416 pulse_outdev_deps="libpulse"
2417 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2418 qtkit_indev_select="qtkit"
2419 sdl_outdev_deps="sdl"
2420 sndio_indev_deps="sndio_h"
2421 sndio_outdev_deps="sndio_h"
2422 v4l_indev_deps="linux_videodev_h"
2423 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2424 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2425 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2426 vfwcap_indev_extralibs="-lavicap32"
2427 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2428 xv_outdev_extralibs="-lXv -lX11 -lXext"
2429 x11grab_indev_deps="x11grab"
2430
2431 # protocols
2432 bluray_protocol_deps="libbluray"
2433 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2434 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2435 ffrtmpcrypt_protocol_select="tcp_protocol"
2436 ffrtmphttp_protocol_deps="!librtmp_protocol"
2437 ffrtmphttp_protocol_select="http_protocol"
2438 ftp_protocol_select="tcp_protocol"
2439 gopher_protocol_select="network"
2440 http_protocol_select="tcp_protocol"
2441 httpproxy_protocol_select="tcp_protocol"
2442 https_protocol_select="tls_protocol"
2443 librtmp_protocol_deps="librtmp"
2444 librtmpe_protocol_deps="librtmp"
2445 librtmps_protocol_deps="librtmp"
2446 librtmpt_protocol_deps="librtmp"
2447 librtmpte_protocol_deps="librtmp"
2448 libssh_protocol_deps="libssh"
2449 mmsh_protocol_select="http_protocol"
2450 mmst_protocol_select="network"
2451 rtmp_protocol_deps="!librtmp_protocol"
2452 rtmp_protocol_select="tcp_protocol"
2453 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2454 rtmps_protocol_deps="!librtmp_protocol"
2455 rtmps_protocol_select="tls_protocol"
2456 rtmpt_protocol_select="ffrtmphttp_protocol"
2457 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2458 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2459 rtp_protocol_select="udp_protocol"
2460 sctp_protocol_deps="struct_sctp_event_subscribe"
2461 sctp_protocol_select="network"
2462 srtp_protocol_select="rtp_protocol"
2463 tcp_protocol_select="network"
2464 tls_protocol_deps_any="openssl gnutls"
2465 tls_protocol_select="tcp_protocol"
2466 udp_protocol_select="network"
2467 unix_protocol_deps="sys_un_h"
2468 unix_protocol_select="network"
2469
2470 # filters
2471 aconvert_filter_deps="swresample"
2472 amovie_filter_deps="avcodec avformat"
2473 aresample_filter_deps="swresample"
2474 ass_filter_deps="libass"
2475 asyncts_filter_deps="avresample"
2476 atempo_filter_deps="avcodec"
2477 atempo_filter_select="rdft"
2478 azmq_filter_deps="libzmq"
2479 blackframe_filter_deps="gpl"
2480 boxblur_filter_deps="gpl"
2481 bs2b_filter_deps="libbs2b"
2482 colormatrix_filter_deps="gpl"
2483 cropdetect_filter_deps="gpl"
2484 dctdnoiz_filter_deps="avcodec"
2485 dctdnoiz_filter_select="dct"
2486 delogo_filter_deps="gpl"
2487 deshake_filter_deps="avcodec"
2488 deshake_filter_select="dsputil"
2489 drawtext_filter_deps="libfreetype"
2490 ebur128_filter_deps="gpl"
2491 flite_filter_deps="libflite"
2492 frei0r_filter_deps="frei0r dlopen"
2493 frei0r_filter_extralibs='$ldl'
2494 frei0r_src_filter_deps="frei0r dlopen"
2495 frei0r_src_filter_extralibs='$ldl'
2496 geq_filter_deps="gpl"
2497 histeq_filter_deps="gpl"
2498 hqdn3d_filter_deps="gpl"
2499 interlace_filter_deps="gpl"
2500 kerndeint_filter_deps="gpl"
2501 ladspa_filter_deps="ladspa dlopen"
2502 mcdeint_filter_deps="avcodec gpl"
2503 movie_filter_deps="avcodec avformat"
2504 mp_filter_deps="gpl avcodec swscale inline_asm"
2505 mpdecimate_filter_deps="gpl avcodec"
2506 mptestsrc_filter_deps="gpl"
2507 negate_filter_deps="lut_filter"
2508 perspective_filter_deps="gpl"
2509 ocv_filter_deps="libopencv"
2510 owdenoise_filter_deps="gpl"
2511 pan_filter_deps="swresample"
2512 phase_filter_deps="gpl"
2513 pp_filter_deps="gpl postproc"
2514 pullup_filter_deps="gpl"
2515 removelogo_filter_deps="avcodec avformat swscale"
2516 resample_filter_deps="avresample"
2517 sab_filter_deps="gpl swscale"
2518 scale_filter_deps="swscale"
2519 smartblur_filter_deps="gpl swscale"
2520 showspectrum_filter_deps="avcodec"
2521 showspectrum_filter_select="rdft"
2522 spp_filter_deps="gpl avcodec"
2523 spp_filter_select="fft"
2524 stereo3d_filter_deps="gpl"
2525 subtitles_filter_deps="avformat avcodec libass"
2526 super2xsai_filter_deps="gpl"
2527 tinterlace_filter_deps="gpl"
2528 vidstabdetect_filter_deps="libvidstab"
2529 vidstabtransform_filter_deps="libvidstab"
2530 pixfmts_super2xsai_test_deps="super2xsai_filter"
2531 tinterlace_merge_test_deps="tinterlace_filter"
2532 tinterlace_pad_test_deps="tinterlace_filter"
2533 zmq_filter_deps="libzmq"
2534
2535 # examples
2536 avio_reading="avformat avcodec avutil"
2537 avcodec_example_deps="avcodec avutil"
2538 demuxing_decoding_example_deps="avcodec avformat avutil"
2539 filter_audio_example_deps="avfilter avutil"
2540 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2541 filtering_video_example_deps="avfilter avcodec avformat avutil"
2542 metadata_example_deps="avformat avutil"
2543 muxing_example_deps="avcodec avformat avutil swscale"
2544 remuxing_example_deps="avcodec avformat avutil"
2545 resampling_audio_example_deps="avutil swresample"
2546 scaling_video_example_deps="avutil swscale"
2547 transcode_aac_example_deps="avcodec avformat swresample"
2548 transcoding_example_deps="avfilter avcodec avformat avutil"
2549
2550 # libraries, in linking order
2551 avcodec_deps="avutil"
2552 avdevice_deps="avformat avcodec avutil"
2553 avfilter_deps="avutil"
2554 avformat_deps="avcodec avutil"
2555 avresample_deps="avutil"
2556 postproc_deps="avutil gpl"
2557 swresample_deps="avutil"
2558 swscale_deps="avutil"
2559
2560 # programs
2561 ffmpeg_deps="avcodec avfilter avformat swresample"
2562 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2563                null_filter
2564                setpts_filter trim_filter"
2565 ffplay_deps="avcodec avformat swscale swresample sdl"
2566 ffplay_libs='$sdl_libs'
2567 ffplay_select="rdft crop_filter"
2568 ffprobe_deps="avcodec avformat"
2569 ffserver_deps="avformat fork sarestart"
2570 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2571
2572 # documentation
2573 podpages_deps="perl"
2574 manpages_deps="perl pod2man"
2575 htmlpages_deps="perl texi2html"
2576 txtpages_deps="perl makeinfo"
2577 doc_deps_any="manpages htmlpages podpages txtpages"
2578
2579 # default parameters
2580
2581 logfile="config.log"
2582
2583 # installation paths
2584 prefix_default="/usr/local"
2585 bindir_default='${prefix}/bin'
2586 datadir_default='${prefix}/share/ffmpeg'
2587 docdir_default='${prefix}/share/doc/ffmpeg'
2588 incdir_default='${prefix}/include'
2589 libdir_default='${prefix}/lib'
2590 mandir_default='${prefix}/share/man'
2591 shlibdir_default="$libdir_default"
2592
2593 # toolchain
2594 ar_default="ar"
2595 cc_default="gcc"
2596 cxx_default="g++"
2597 host_cc_default="gcc"
2598 cp_f="cp -f"
2599 install="install"
2600 ln_s="ln -s -f"
2601 nm_default="nm -g"
2602 objformat="elf"
2603 pkg_config_default=pkg-config
2604 ranlib_default="ranlib"
2605 strip_default="strip"
2606 yasmexe_default="yasm"
2607 windres_default="windres"
2608
2609 nogas=":"
2610
2611 # OS
2612 target_os_default=$(tolower $(uname -s))
2613 host_os=$target_os_default
2614
2615 # machine
2616 if test "$target_os_default" = aix; then
2617     arch_default=$(uname -p)
2618 else
2619     arch_default=$(uname -m)
2620 fi
2621 cpu="generic"
2622
2623 # configurable options
2624 enable $PROGRAM_LIST
2625 enable $DOCUMENT_LIST
2626 enable $EXAMPLE_LIST
2627 enable $(filter_out avresample $LIBRARY_LIST)
2628 enable stripping
2629
2630 enable asm
2631 enable debug
2632 enable doc
2633 enable optimizations
2634 enable runtime_cpudetect
2635 enable safe_bitstream_reader
2636 enable static
2637 enable swscale_alpha
2638
2639 # Enable hwaccels by default.
2640 enable dxva2 vaapi vda vdpau xvmc
2641 enable xlib
2642
2643 # build settings
2644 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2645 LIBPREF="lib"
2646 LIBSUF=".a"
2647 FULLNAME='$(NAME)$(BUILDSUF)'
2648 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2649 SLIBPREF="lib"
2650 SLIBSUF=".so"
2651 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2652 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2653 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2654 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2655 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2656 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2657
2658 asflags_filter=echo
2659 cflags_filter=echo
2660 ldflags_filter=echo
2661
2662 AS_C='-c'
2663 AS_O='-o $@'
2664 CC_C='-c'
2665 CC_E='-E -o $@'
2666 CC_O='-o $@'
2667 CXX_C='-c'
2668 CXX_O='-o $@'
2669 LD_O='-o $@'
2670 LD_LIB='-l%'
2671 LD_PATH='-L'
2672 HOSTCC_C='-c'
2673 HOSTCC_E='-E -o $@'
2674 HOSTCC_O='-o $@'
2675 HOSTLD_O='-o $@'
2676
2677 host_libs='-lm'
2678 host_cflags_filter=echo
2679 host_ldflags_filter=echo
2680
2681 target_path='$(CURDIR)'
2682
2683 # since the object filename is not given with the -MM flag, the compiler
2684 # is only able to print the basename, and we must add the path ourselves
2685 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2686 DEPFLAGS='-MM'
2687
2688 # find source path
2689 if test -f configure; then
2690     source_path=.
2691 else
2692     source_path=$(cd $(dirname "$0"); pwd)
2693     echo "$source_path" | grep -q '[[:blank:]]' &&
2694         die "Out of tree builds are impossible with whitespace in source path."
2695     test -e "$source_path/config.h" &&
2696         die "Out of tree builds are impossible with config.h in source dir."
2697 fi
2698
2699 for v in "$@"; do
2700     r=${v#*=}
2701     l=${v%"$r"}
2702     r=$(sh_quote "$r")
2703     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2704 done
2705
2706 find_things(){
2707     thing=$1
2708     pattern=$2
2709     file=$source_path/$3
2710     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2711 }
2712
2713 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2714 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2715 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2716 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2717 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2718 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2719 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2720 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2721 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2722 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2723 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2724
2725 ALL_COMPONENTS="
2726     $BSF_LIST
2727     $DECODER_LIST
2728     $DEMUXER_LIST
2729     $ENCODER_LIST
2730     $FILTER_LIST
2731     $HWACCEL_LIST
2732     $INDEV_LIST
2733     $MUXER_LIST
2734     $OUTDEV_LIST
2735     $PARSER_LIST
2736     $PROTOCOL_LIST
2737 "
2738
2739 for n in $COMPONENT_LIST; do
2740     v=$(toupper ${n%s})_LIST
2741     eval enable \$$v
2742     eval ${n}_if_any="\$$v"
2743 done
2744
2745 enable $ARCH_EXT_LIST
2746
2747 die_unknown(){
2748     echo "Unknown option \"$1\"."
2749     echo "See $0 --help for available options."
2750     exit 1
2751 }
2752
2753 print_3_columns() {
2754     cat | tr ' ' '\n' | sort | pr -r -3 -t
2755 }
2756
2757 show_list() {
2758     suffix=_$1
2759     shift
2760     echo $* | sed s/$suffix//g | print_3_columns
2761     exit 0
2762 }
2763
2764 rand_list(){
2765     IFS=', '
2766     set -- $*
2767     unset IFS
2768     for thing; do
2769         comp=${thing%:*}
2770         prob=${thing#$comp}
2771         prob=${prob#:}
2772         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2773         echo "prob ${prob:-0.5}"
2774         printf '%s\n' $comp
2775     done
2776 }
2777
2778 do_random(){
2779     action=$1
2780     shift
2781     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2782     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2783 }
2784
2785 for opt do
2786     optval="${opt#*=}"
2787     case "$opt" in
2788         --extra-ldflags=*)
2789             add_ldflags $optval
2790         ;;
2791         --extra-libs=*)
2792             add_extralibs $optval
2793         ;;
2794         --disable-devices)
2795             disable $INDEV_LIST $OUTDEV_LIST
2796         ;;
2797         --enable-debug=*)
2798             debuglevel="$optval"
2799         ;;
2800         --disable-programs)
2801             disable $PROGRAM_LIST
2802         ;;
2803         --disable-everything)
2804             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2805         ;;
2806         --disable-all)
2807             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2808             disable $LIBRARY_LIST $PROGRAM_LIST doc
2809         ;;
2810         --enable-random|--disable-random)
2811             action=${opt%%-random}
2812             do_random ${action#--} $COMPONENT_LIST
2813         ;;
2814         --enable-random=*|--disable-random=*)
2815             action=${opt%%-random=*}
2816             do_random ${action#--} $optval
2817         ;;
2818         --enable-*=*|--disable-*=*)
2819             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2820             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2821             eval list=\$$(toupper $thing)_LIST
2822             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2823             list=$(filter "$name" $list)
2824             [ "$list" = "" ] && warn "Option $opt did not match anything"
2825             $action $list
2826         ;;
2827         --enable-?*|--disable-?*)
2828             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2829             if is_in $option $COMPONENT_LIST; then
2830                 test $action = disable && action=unset
2831                 eval $action \$$(toupper ${option%s})_LIST
2832             elif is_in $option $CMDLINE_SELECT; then
2833                 $action $option
2834             else
2835                 die_unknown $opt
2836             fi
2837         ;;
2838         --list-*)
2839             NAME="${opt#--list-}"
2840             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2841             NAME=${NAME%s}
2842             eval show_list $NAME \$$(toupper $NAME)_LIST
2843         ;;
2844         --help|-h) show_help
2845         ;;
2846         --fatal-warnings) enable fatal_warnings
2847         ;;
2848         *)
2849             optname="${opt%%=*}"
2850             optname="${optname#--}"
2851             optname=$(echo "$optname" | sed 's/-/_/g')
2852             if is_in $optname $CMDLINE_SET; then
2853                 eval $optname='$optval'
2854             elif is_in $optname $CMDLINE_APPEND; then
2855                 append $optname "$optval"
2856             else
2857                 die_unknown $opt
2858             fi
2859         ;;
2860     esac
2861 done
2862
2863 disabled logging && logfile=/dev/null
2864
2865 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2866 set >> $logfile
2867
2868 test -n "$cross_prefix" && enable cross_compile
2869
2870 if enabled cross_compile; then
2871     test -n "$arch" && test -n "$target_os" ||
2872         die "Must specify target arch and OS when cross-compiling"
2873 fi
2874
2875 ar_default="${cross_prefix}${ar_default}"
2876 cc_default="${cross_prefix}${cc_default}"
2877 cxx_default="${cross_prefix}${cxx_default}"
2878 nm_default="${cross_prefix}${nm_default}"
2879 pkg_config_default="${cross_prefix}${pkg_config_default}"
2880 ranlib_default="${cross_prefix}${ranlib_default}"
2881 strip_default="${cross_prefix}${strip_default}"
2882 windres_default="${cross_prefix}${windres_default}"
2883
2884 sysinclude_default="${sysroot}/usr/include"
2885
2886 test -n "$valgrind" && toolchain="valgrind-memcheck"
2887
2888 case "$toolchain" in
2889     clang-asan)
2890         cc_default="clang"
2891         add_cflags  -fsanitize=address
2892         add_ldflags -fsanitize=address
2893     ;;
2894     clang-tsan)
2895         cc_default="clang"
2896         add_cflags  -fsanitize=thread -pie
2897         add_ldflags -fsanitize=thread -pie
2898     ;;
2899     clang-usan)
2900         cc_default="clang"
2901         add_cflags  -fsanitize=undefined
2902         add_ldflags -fsanitize=undefined
2903     ;;
2904     gcc-asan)
2905         cc_default="gcc"
2906         add_cflags  -fsanitize=address
2907         add_ldflags -fsanitize=address
2908     ;;
2909     gcc-tsan)
2910         cc_default="gcc"
2911         add_cflags  -fsanitize=thread -pie -fPIC
2912         add_ldflags -fsanitize=thread -pie -fPIC
2913     ;;
2914     gcc-usan)
2915         cc_default="gcc"
2916         add_cflags  -fsanitize=undefined
2917         add_ldflags -fsanitize=undefined
2918     ;;
2919     valgrind-massif)
2920         target_exec_default=${valgrind:-"valgrind"}
2921         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"
2922     ;;
2923     valgrind-memcheck)
2924         target_exec_default=${valgrind:-"valgrind"}
2925         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2926     ;;
2927     msvc)
2928         # Check whether the current MSVC version needs the C99 converter.
2929         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2930         # support enough of C99 to build ffmpeg. Default to the new
2931         # behaviour if the regexp was unable to match anything, since this
2932         # successfully parses the version number of existing supported
2933         # versions that require the converter (MSVC 2010 and 2012).
2934         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2935         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2936             cc_default="cl"
2937         else
2938             cc_default="c99wrap cl"
2939         fi
2940         ld_default="link"
2941         nm_default="dumpbin -symbols"
2942         ar_default="lib"
2943         target_os_default="win32"
2944         # Use a relative path for TMPDIR. This makes sure all the
2945         # ffconf temp files are written with a relative path, avoiding
2946         # issues with msys/win32 path conversion for MSVC parameters
2947         # such as -Fo<file> or -out:<file>.
2948         TMPDIR=.
2949     ;;
2950     icl)
2951         cc_default="icl"
2952         ld_default="xilink"
2953         nm_default="dumpbin -symbols"
2954         ar_default="xilib"
2955         target_os_default="win32"
2956         TMPDIR=.
2957     ;;
2958     gcov)
2959         add_cflags  -fprofile-arcs -ftest-coverage
2960         add_ldflags -fprofile-arcs -ftest-coverage
2961     ;;
2962     hardened)
2963         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2964         add_ldflags -Wl,-z,relro -Wl,-z,now
2965     ;;
2966     ?*)
2967         die "Unknown toolchain $toolchain"
2968     ;;
2969 esac
2970
2971 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2972 enabled cross_compile || host_cc_default=$cc
2973 set_default host_cc
2974
2975 if ! $pkg_config --version >/dev/null 2>&1; then
2976     warn "$pkg_config not found, library detection may fail."
2977     pkg_config=false
2978 fi
2979
2980 exesuf() {
2981     case $1 in
2982         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2983     esac
2984 }
2985
2986 EXESUF=$(exesuf $target_os)
2987 HOSTEXESUF=$(exesuf $host_os)
2988
2989 # set temporary file name
2990 : ${TMPDIR:=$TEMPDIR}
2991 : ${TMPDIR:=$TMP}
2992 : ${TMPDIR:=/tmp}
2993
2994 if [ -n "$tempprefix" ] ; then
2995     mktemp(){
2996         echo $tempprefix.${HOSTNAME}.${UID}
2997     }
2998 elif ! check_cmd mktemp -u XXXXXX; then
2999     # simple replacement for missing mktemp
3000     # NOT SAFE FOR GENERAL USE
3001     mktemp(){
3002         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3003     }
3004 fi
3005
3006 tmpfile(){
3007     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3008         (set -C; exec > $tmp) 2>/dev/null ||
3009         die "Unable to create temporary file in $TMPDIR."
3010     append TMPFILES $tmp
3011     eval $1=$tmp
3012 }
3013
3014 trap 'rm -f -- $TMPFILES' EXIT
3015
3016 tmpfile TMPASM .asm
3017 tmpfile TMPC   .c
3018 tmpfile TMPCPP .cpp
3019 tmpfile TMPE   $EXESUF
3020 tmpfile TMPH   .h
3021 tmpfile TMPM   .m
3022 tmpfile TMPO   .o
3023 tmpfile TMPS   .S
3024 tmpfile TMPSH  .sh
3025 tmpfile TMPV   .ver
3026
3027 unset -f mktemp
3028
3029 chmod +x $TMPE
3030
3031 # make sure we can execute files in $TMPDIR
3032 cat > $TMPSH 2>> $logfile <<EOF
3033 #! /bin/sh
3034 EOF
3035 chmod +x $TMPSH >> $logfile 2>&1
3036 if ! $TMPSH >> $logfile 2>&1; then
3037     cat <<EOF
3038 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3039 variable to another directory and make sure that it is not mounted noexec.
3040 EOF
3041     die "Sanity test failed."
3042 fi
3043
3044 ccc_flags(){
3045     for flag; do
3046         case $flag in
3047             -std=c99)           echo -c99                       ;;
3048             -mcpu=*)            echo -arch ${flag#*=}           ;;
3049             -mieee)             echo -ieee                      ;;
3050             -O*|-fast)          echo $flag                      ;;
3051             -fno-math-errno)    echo -assume nomath_errno       ;;
3052             -g)                 echo -g3                        ;;
3053             -Wall)              echo -msg_enable level2         ;;
3054             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3055             -Wl,*)              echo $flag                      ;;
3056             -f*|-W*)                                            ;;
3057             *)                  echo $flag                      ;;
3058         esac
3059    done
3060 }
3061
3062 cparser_flags(){
3063     for flag; do
3064         case $flag in
3065             -Wno-switch)             echo -Wno-switch-enum ;;
3066             -Wno-format-zero-length) ;;
3067             -Wdisabled-optimization) ;;
3068             -Wno-pointer-sign)       echo -Wno-other ;;
3069             *)                       echo $flag ;;
3070         esac
3071     done
3072 }
3073
3074 msvc_common_flags(){
3075     for flag; do
3076         case $flag in
3077             # In addition to specifying certain flags under the compiler
3078             # specific filters, they must be specified here as well or else the
3079             # generic catch all at the bottom will print the original flag.
3080             -Wall)                ;;
3081             -std=c99)             ;;
3082             # Common flags
3083             -fomit-frame-pointer) ;;
3084             -g)                   echo -Z7 ;;
3085             -fno-math-errno)      ;;
3086             -fno-common)          ;;
3087             -fno-signed-zeros)    ;;
3088             -fPIC)                ;;
3089             -mthumb)              ;;
3090             -march=*)             ;;
3091             -lz)                  echo zlib.lib ;;
3092             -lavifil32)           echo vfw32.lib ;;
3093             -lavicap32)           echo vfw32.lib user32.lib ;;
3094             -l*)                  echo ${flag#-l}.lib ;;
3095             *)                    echo $flag ;;
3096         esac
3097     done
3098 }
3099
3100 msvc_flags(){
3101     msvc_common_flags "$@"
3102     for flag; do
3103         case $flag in
3104             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3105                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3106                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3107                                        -wd4554 \
3108                                        -wd4273 ;;
3109         esac
3110     done
3111 }
3112
3113 icl_flags(){
3114     msvc_common_flags "$@"
3115     for flag; do
3116         case $flag in
3117             # Despite what Intel's documentation says -Wall, which is supported
3118             # on Windows, does enable remarks so disable them here.
3119             -Wall)                echo $flag -Qdiag-disable:remark ;;
3120             -std=c99)             echo -Qstd=c99 ;;
3121         esac
3122     done
3123 }
3124
3125 icc_flags(){
3126     for flag; do
3127         case $flag in
3128             -flto)                echo -ipo ;;
3129             *)                    echo $flag ;;
3130         esac
3131     done
3132 }
3133
3134 pgi_flags(){
3135     for flag; do
3136         case $flag in
3137             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3138             -fomit-frame-pointer) echo -Mnoframe ;;
3139             -g)                   echo -gopt ;;
3140             *)                    echo $flag ;;
3141         esac
3142     done
3143 }
3144
3145 suncc_flags(){
3146     for flag; do
3147         case $flag in
3148             -march=*|-mcpu=*)
3149                 case "${flag#*=}" in
3150                     native)                   echo -xtarget=native       ;;
3151                     v9|niagara)               echo -xarch=sparc          ;;
3152                     ultrasparc)               echo -xarch=sparcvis       ;;
3153                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3154                     i586|pentium)             echo -xchip=pentium        ;;
3155                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3156                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3157                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3158                     pentium4*)          echo -xtarget=pentium4           ;;
3159                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3160                     *-sse3)             echo -xarch=sse3                 ;;
3161                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3162                     bonnell)                   echo -xarch=ssse3         ;;
3163                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3164                     westmere)                  echo -xtarget=westmere    ;;
3165                     silvermont)                echo -xarch=sse4_2        ;;
3166                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3167                     core-avx*|ivybridge|haswell|broadwell)
3168                                                echo -xarch=avx           ;;
3169                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3170                     btver1)                    echo -xarch=amdsse4a      ;;
3171                     btver2|bdver*)             echo -xarch=avx           ;;
3172                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3173                     k8|opteron|athlon64|athlon-fx)
3174                                                echo -xarch=sse2a         ;;
3175                     athlon*)                   echo -xarch=pentium_proa  ;;
3176                 esac
3177                 ;;
3178             -std=c99)             echo -xc99              ;;
3179             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3180             -fPIC)                echo -KPIC -xcode=pic32 ;;
3181             -W*,*)                echo $flag              ;;
3182             -f*-*|-W*|-mimpure-text)                      ;;
3183             -shared)              echo -G                 ;;
3184             *)                    echo $flag              ;;
3185         esac
3186     done
3187 }
3188
3189 tms470_flags(){
3190     for flag; do
3191         case $flag in
3192             -march=*|-mcpu=*)
3193                 case "${flag#*=}" in
3194                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3195                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3196                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3197                     armv6*|arm11*)          echo -mv=6   ;;
3198                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3199                                             echo -mv=5e  ;;
3200                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3201                 esac
3202                 ;;
3203             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3204             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3205             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3206             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3207             -msoft-float)   echo --float_support=vfplib       ;;
3208             -O[0-3]|-mf=*)  echo $flag                        ;;
3209             -g)             echo -g -mn                       ;;
3210             -pds=*)         echo $flag                        ;;
3211             -D*|-I*)        echo $flag                        ;;
3212             --gcc|--abi=*)  echo $flag                        ;;
3213             -me)            echo $flag                        ;;
3214         esac
3215     done
3216 }
3217
3218 probe_cc(){
3219     pfx=$1
3220     _cc=$2
3221
3222     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3223     unset _ld_o _ldflags _ld_lib _ld_path
3224     unset _depflags _DEPCMD _DEPFLAGS
3225     _flags_filter=echo
3226
3227     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3228         true # no-op to avoid reading stdin in following checks
3229     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3230         _type=llvm_gcc
3231         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3232         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3233         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3234         _cflags_speed='-O3'
3235         _cflags_size='-Os'
3236     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3237         _type=gcc
3238         gcc_version=$($_cc --version | head -n1)
3239         gcc_basever=$($_cc -dumpversion)
3240         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3241         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3242         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3243         if ! $_cc -dumpversion | grep -q '^2\.'; then
3244             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3245         fi
3246         _cflags_speed='-O3'
3247         _cflags_size='-Os'
3248     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3249         _type=icc
3250         _ident=$($_cc --version | head -n1)
3251         _depflags='-MMD'
3252         _cflags_speed='-O3'
3253         _cflags_size='-Os'
3254         _cflags_noopt='-O1'
3255         _flags_filter=icc_flags
3256     elif $_cc -v 2>&1 | grep -q xlc; then
3257         _type=xlc
3258         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3259         _cflags_speed='-O5'
3260         _cflags_size='-O5 -qcompact'
3261     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3262         _type=ccc
3263         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3264         _DEPFLAGS='-M'
3265         _cflags_speed='-fast'
3266         _cflags_size='-O1'
3267         _flags_filter=ccc_flags
3268     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3269         test -d "$sysroot" || die "No valid sysroot specified."
3270         _type=armcc
3271         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3272         armcc_conf="$PWD/armcc.conf"
3273         $_cc --arm_linux_configure                 \
3274              --arm_linux_config_file="$armcc_conf" \
3275              --configure_sysroot="$sysroot"        \
3276              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3277              die "Error creating armcc configuration file."
3278         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3279         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3280         as_default="${cross_prefix}gcc"
3281         _depflags='-MMD'
3282         _cflags_speed='-O3'
3283         _cflags_size='-Os'
3284     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3285         _type=tms470
3286         _ident=$($_cc -version | head -n1 | tr -s ' ')
3287         _flags='--gcc --abi=eabi -me'
3288         _cc_e='-ppl -fe=$@'
3289         _cc_o='-fe=$@'
3290         _depflags='-ppa -ppd=$(@:.o=.d)'
3291         _cflags_speed='-O3 -mf=5'
3292         _cflags_size='-O3 -mf=2'
3293         _flags_filter=tms470_flags
3294     elif $_cc -v 2>&1 | grep -q clang; then
3295         _type=clang
3296         _ident=$($_cc --version | head -n1)
3297         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3298         _cflags_speed='-O3'
3299         _cflags_size='-Os'
3300     elif $_cc -V 2>&1 | grep -q Sun; then
3301         _type=suncc
3302         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3303         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3304         _DEPFLAGS='-xM1 -xc99'
3305         _ldflags='-std=c99'
3306         _cflags_speed='-O5'
3307         _cflags_size='-O5 -xspace'
3308         _flags_filter=suncc_flags
3309     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3310         _type=pathscale
3311         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3312         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3313         _cflags_speed='-O2'
3314         _cflags_size='-Os'
3315         _flags_filter='filter_out -Wdisabled-optimization'
3316     elif $_cc -v 2>&1 | grep -q Open64; then
3317         _type=open64
3318         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3319         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3320         _cflags_speed='-O2'
3321         _cflags_size='-Os'
3322         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3323     elif $_cc -V 2>&1 | grep -q Portland; then
3324         _type=pgi
3325         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3326         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3327         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3328         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3329         _cflags_noopt="-O"
3330         _flags_filter=pgi_flags
3331     elif $_cc 2>&1 | grep -q Microsoft; then
3332         _type=msvc
3333         _ident=$($cc 2>&1 | head -n1)
3334         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3335         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3336         _cflags_speed="-O2"
3337         _cflags_size="-O1"
3338         if $_cc 2>&1 | grep -q Linker; then
3339             _ld_o='-out:$@'
3340         else
3341             _ld_o='-Fe$@'
3342         fi
3343         _cc_o='-Fo$@'
3344         _cc_e='-P -Fi$@'
3345         _flags_filter=msvc_flags
3346         _ld_lib='lib%.a'
3347         _ld_path='-libpath:'
3348         _flags='-nologo'
3349         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3350         if [ $pfx = hostcc ]; then
3351             append _cflags -Dsnprintf=_snprintf
3352         fi
3353         disable stripping
3354     elif $_cc 2>&1 | grep -q Intel; then
3355         _type=icl
3356         _ident=$($cc 2>&1 | head -n1)
3357         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3358         # Not only is O3 broken on 13.x+ but it is slower on all previous
3359         # versions (tested) as well.
3360         _cflags_speed="-O2"
3361         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3362         if $_cc 2>&1 | grep -q Linker; then
3363             _ld_o='-out:$@'
3364         else
3365             _ld_o='-Fe$@'
3366         fi
3367         _cc_o='-Fo$@'
3368         _cc_e='-P'
3369         _flags_filter=icl_flags
3370         _ld_lib='lib%.a'
3371         _ld_path='-libpath:'
3372         # -Qdiag-error to make icl error when seeing certain unknown arguments
3373         _flags='-nologo -Qdiag-error:4044,10157'
3374         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3375         # with MSVC which enables it by default.
3376         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3377         if [ $pfx = hostcc ]; then
3378             append _cflags -Dsnprintf=_snprintf
3379         fi
3380     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3381         _type=cparser
3382         _ident=$($_cc --version | head -n1)
3383         _depflags='-MMD'
3384         _cflags_speed='-O4'
3385         _cflags_size='-O2'
3386         _flags_filter=cparser_flags
3387     fi
3388
3389     eval ${pfx}_type=\$_type
3390     eval ${pfx}_ident=\$_ident
3391 }
3392
3393 set_ccvars(){
3394     eval ${1}_C=\${_cc_c-\${${1}_C}}
3395     eval ${1}_E=\${_cc_e-\${${1}_E}}
3396     eval ${1}_O=\${_cc_o-\${${1}_O}}
3397
3398     if [ -n "$_depflags" ]; then
3399         eval ${1}_DEPFLAGS=\$_depflags
3400     else
3401         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3402         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3403         eval DEP${1}FLAGS=\$_flags
3404     fi
3405 }
3406
3407 probe_cc cc "$cc"
3408 cflags_filter=$_flags_filter
3409 cflags_speed=$_cflags_speed
3410 cflags_size=$_cflags_size
3411 cflags_noopt=$_cflags_noopt
3412 add_cflags $_flags $_cflags
3413 cc_ldflags=$_ldflags
3414 set_ccvars CC
3415
3416 probe_cc hostcc "$host_cc"
3417 host_cflags_filter=$_flags_filter
3418 add_host_cflags  $_flags $_cflags
3419 set_ccvars HOSTCC
3420
3421 test -n "$cc_type" && enable $cc_type ||
3422     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3423
3424 : ${as_default:=$cc}
3425 : ${dep_cc_default:=$cc}
3426 : ${ld_default:=$cc}
3427 : ${host_ld_default:=$host_cc}
3428 set_default ar as dep_cc ld host_ld windres
3429
3430 probe_cc as "$as"
3431 asflags_filter=$_flags_filter
3432 add_asflags $_flags $_cflags
3433 set_ccvars AS
3434
3435 probe_cc ld "$ld"
3436 ldflags_filter=$_flags_filter
3437 add_ldflags $_flags $_ldflags
3438 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3439 LD_O=${_ld_o-$LD_O}
3440 LD_LIB=${_ld_lib-$LD_LIB}
3441 LD_PATH=${_ld_path-$LD_PATH}
3442
3443 probe_cc hostld "$host_ld"
3444 host_ldflags_filter=$_flags_filter
3445 add_host_ldflags $_flags $_ldflags
3446 HOSTLD_O=${_ld_o-$HOSTLD_O}
3447
3448 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3449     probe_cc depcc "$dep_cc"
3450     CCDEP=${_DEPCMD:-$DEPCMD}
3451     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3452     DEPCCFLAGS=$_flags
3453 fi
3454
3455 if $ar 2>&1 | grep -q Microsoft; then
3456     arflags="-nologo"
3457     ar_o='-out:$@'
3458 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3459     arflags="rq"
3460     ar_o='$@'
3461 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3462     arflags='-Xany -r -c'
3463     ar_o='$@'
3464 else
3465     arflags="rc"
3466     ar_o='$@'
3467 fi
3468
3469 add_cflags $extra_cflags
3470 add_cxxflags $extra_cxxflags
3471 add_asflags $extra_cflags
3472
3473 if test -n "$sysroot"; then
3474     case "$cc_type" in
3475         gcc|llvm_gcc|clang)
3476             add_cppflags --sysroot="$sysroot"
3477             add_ldflags --sysroot="$sysroot"
3478 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3479             add_cppflags -isysroot "$sysroot"
3480             add_ldflags -isysroot "$sysroot"
3481         ;;
3482         tms470)
3483             add_cppflags -I"$sysinclude"
3484             add_ldflags  --sysroot="$sysroot"
3485         ;;
3486     esac
3487 fi
3488
3489 if test "$cpu" = host; then
3490     enabled cross_compile &&
3491         die "--cpu=host makes no sense when cross-compiling."
3492
3493     case "$cc_type" in
3494         gcc|llvm_gcc)
3495             check_native(){
3496                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3497                 sed -n "/cc1.*$1=/{
3498                             s/.*$1=\\([^ ]*\\).*/\\1/
3499                             p
3500                             q
3501                         }" $TMPE
3502             }
3503             cpu=$(check_native -march || check_native -mcpu)
3504         ;;
3505     esac
3506
3507     test "${cpu:-host}" = host &&
3508         die "--cpu=host not supported with compiler $cc"
3509 fi
3510
3511 # Deal with common $arch aliases
3512 case "$arch" in
3513     aarch64|arm64)
3514         arch="aarch64"
3515     ;;
3516     arm*|iPad*|iPhone*)
3517         arch="arm"
3518     ;;
3519     mips*|IP*)
3520         arch="mips"
3521     ;;
3522     parisc*|hppa*)
3523         arch="parisc"
3524     ;;
3525     "Power Macintosh"|ppc*|powerpc*)
3526         arch="ppc"
3527     ;;
3528     s390|s390x)
3529         arch="s390"
3530     ;;
3531     sh4|sh)
3532         arch="sh4"
3533     ;;
3534     sun4u|sparc*)
3535         arch="sparc"
3536     ;;
3537     tilegx|tile-gx)
3538         arch="tilegx"
3539     ;;
3540     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3541         arch="x86"
3542     ;;
3543 esac
3544
3545 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3546 enable $arch
3547
3548 # Add processor-specific flags
3549 if enabled aarch64; then
3550
3551     case $cpu in
3552         armv*)
3553             cpuflags="-march=$cpu"
3554         ;;
3555         *)
3556             cpuflags="-mcpu=$cpu"
3557         ;;
3558     esac
3559
3560 elif enabled alpha; then
3561
3562     cpuflags="-mcpu=$cpu"
3563
3564 elif enabled arm; then
3565
3566     check_arm_arch() {
3567         check_cpp_condition stddef.h \
3568             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3569             $cpuflags
3570     }
3571
3572     probe_arm_arch() {
3573         if   check_arm_arch 4;        then echo armv4;
3574         elif check_arm_arch 4T;       then echo armv4t;
3575         elif check_arm_arch 5;        then echo armv5;
3576         elif check_arm_arch 5E;       then echo armv5e;
3577         elif check_arm_arch 5T;       then echo armv5t;
3578         elif check_arm_arch 5TE;      then echo armv5te;
3579         elif check_arm_arch 5TEJ;     then echo armv5te;
3580         elif check_arm_arch 6;        then echo armv6;
3581         elif check_arm_arch 6J;       then echo armv6j;
3582         elif check_arm_arch 6K;       then echo armv6k;
3583         elif check_arm_arch 6Z;       then echo armv6z;
3584         elif check_arm_arch 6ZK;      then echo armv6zk;
3585         elif check_arm_arch 6T2;      then echo armv6t2;
3586         elif check_arm_arch 7;        then echo armv7;
3587         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3588         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3589         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3590         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3591         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3592         fi
3593     }
3594
3595     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3596
3597     case $cpu in
3598         armv*)
3599             cpuflags="-march=$cpu"
3600             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3601         ;;
3602         *)
3603             cpuflags="-mcpu=$cpu"
3604             case $cpu in
3605                 cortex-a*)                               subarch=armv7a  ;;
3606                 cortex-r*)                               subarch=armv7r  ;;
3607                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3608                 arm11*)                                  subarch=armv6   ;;
3609                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3610                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3611                 *)                             subarch=$(probe_arm_arch) ;;
3612             esac
3613         ;;
3614     esac
3615
3616     case "$subarch" in
3617         armv5t*)    enable fast_clz                ;;
3618         armv[6-8]*) enable fast_clz fast_unaligned ;;
3619     esac
3620
3621 elif enabled avr32; then
3622
3623     case $cpu in
3624         ap7[02]0[0-2])
3625             subarch="avr32_ap"
3626             cpuflags="-mpart=$cpu"
3627         ;;
3628         ap)
3629             subarch="avr32_ap"
3630             cpuflags="-march=$cpu"
3631         ;;
3632         uc3[ab]*)
3633             subarch="avr32_uc"
3634             cpuflags="-mcpu=$cpu"
3635         ;;
3636         uc)
3637             subarch="avr32_uc"
3638             cpuflags="-march=$cpu"
3639         ;;
3640     esac
3641
3642 elif enabled bfin; then
3643
3644     cpuflags="-mcpu=$cpu"
3645
3646 elif enabled mips; then
3647
3648     cpuflags="-march=$cpu"
3649
3650     case $cpu in
3651         24kc)
3652             disable mipsfpu
3653             disable mipsdspr1
3654             disable mipsdspr2
3655         ;;
3656         24kf*)
3657             disable mipsdspr1
3658             disable mipsdspr2
3659         ;;
3660         24kec|34kc|1004kc)
3661             disable mipsfpu
3662             disable mipsdspr2
3663         ;;
3664         24kef*|34kf*|1004kf*)
3665             disable mipsdspr2
3666         ;;
3667         74kc)
3668             disable mipsfpu
3669         ;;
3670     esac
3671
3672 elif enabled ppc; then
3673
3674     disable ldbrx
3675
3676     case $(tolower $cpu) in
3677         601|ppc601|powerpc601)
3678             cpuflags="-mcpu=601"
3679             disable altivec
3680         ;;
3681         603*|ppc603*|powerpc603*)
3682             cpuflags="-mcpu=603"
3683             disable altivec
3684         ;;
3685         604*|ppc604*|powerpc604*)
3686             cpuflags="-mcpu=604"
3687             disable altivec
3688         ;;
3689         g3|75*|ppc75*|powerpc75*)
3690             cpuflags="-mcpu=750"
3691             disable altivec
3692         ;;
3693         g4|745*|ppc745*|powerpc745*)
3694             cpuflags="-mcpu=7450"
3695         ;;
3696         74*|ppc74*|powerpc74*)
3697             cpuflags="-mcpu=7400"
3698         ;;
3699         g5|970|ppc970|powerpc970)
3700             cpuflags="-mcpu=970"
3701         ;;
3702         power[3-7]*)
3703             cpuflags="-mcpu=$cpu"
3704         ;;
3705         cell)
3706             cpuflags="-mcpu=cell"
3707             enable ldbrx
3708         ;;
3709         e500mc)
3710             cpuflags="-mcpu=e500mc"
3711             disable altivec
3712         ;;
3713         e500v2)
3714             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3715             disable altivec
3716             disable dcbzl
3717         ;;
3718         e500)
3719             cpuflags="-mcpu=8540 -mhard-float"
3720             disable altivec
3721             disable dcbzl
3722         ;;
3723     esac
3724
3725 elif enabled sparc; then
3726
3727     case $cpu in
3728         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3729             cpuflags="-mcpu=$cpu"
3730         ;;
3731         ultrasparc*|niagara[234])
3732             cpuflags="-mcpu=$cpu"
3733         ;;
3734     esac
3735
3736 elif enabled x86; then
3737
3738     case $cpu in
3739         i[345]86|pentium)
3740             cpuflags="-march=$cpu"
3741             disable mmx
3742         ;;
3743         # targets that do NOT support nopl and conditional mov (cmov)
3744         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3745             cpuflags="-march=$cpu"
3746             disable i686
3747         ;;
3748         # targets that do support nopl and conditional mov (cmov)
3749         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3750         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3751             cpuflags="-march=$cpu"
3752             enable i686
3753             enable fast_cmov
3754         ;;
3755         # targets that do support conditional mov but on which it's slow
3756         pentium4|pentium4m|prescott|nocona)
3757             cpuflags="-march=$cpu"
3758             enable i686
3759             disable fast_cmov
3760         ;;
3761     esac
3762
3763 fi
3764
3765 if [ "$cpu" != generic ]; then
3766     add_cflags  $cpuflags
3767     add_asflags $cpuflags
3768 fi
3769
3770 # compiler sanity check
3771 check_exec <<EOF
3772 int main(void){ return 0; }
3773 EOF
3774 if test "$?" != 0; then
3775     echo "$cc is unable to create an executable file."
3776     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3777         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3778         echo "Only do this if you know what cross compiling means."
3779     fi
3780     die "C compiler test failed."
3781 fi
3782
3783 add_cppflags -D_ISOC99_SOURCE
3784 add_cxxflags -D__STDC_CONSTANT_MACROS
3785 check_cflags -std=c99
3786 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3787 #include <stdlib.h>
3788 EOF
3789 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3790 #include <stdlib.h>
3791 EOF
3792
3793 add_host_cppflags -D_ISOC99_SOURCE
3794 check_host_cflags -std=c99
3795 check_host_cflags -Wall
3796 check_host_cflags -O3
3797
3798 check_64bit(){
3799     arch32=$1
3800     arch64=$2
3801     expr=$3
3802     check_code cc "" "int test[2*($expr) - 1]" &&
3803         subarch=$arch64 || subarch=$arch32
3804 }
3805
3806 case "$arch" in
3807     aarch64|alpha|ia64)
3808         spic=$shared
3809     ;;
3810     mips)
3811         check_64bit mips mips64 '_MIPS_SIM > 1'
3812         spic=$shared
3813     ;;
3814     parisc)
3815         check_64bit parisc parisc64 'sizeof(void *) > 4'
3816         spic=$shared
3817     ;;
3818     ppc)
3819         check_64bit ppc ppc64 'sizeof(void *) > 4'
3820         spic=$shared
3821     ;;
3822     s390)
3823         check_64bit s390 s390x 'sizeof(void *) > 4'
3824         spic=$shared
3825     ;;
3826     sparc)
3827         check_64bit sparc sparc64 'sizeof(void *) > 4'
3828         spic=$shared
3829     ;;
3830     x86)
3831         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3832         if test "$subarch" = "x86_64"; then
3833             spic=$shared
3834         fi
3835     ;;
3836     ppc)
3837         check_cc <<EOF && subarch="ppc64"
3838         int test[(int)sizeof(char*) - 7];
3839 EOF
3840     ;;
3841 esac
3842
3843 enable $subarch
3844 enabled spic && enable_weak pic
3845
3846 # OS specific
3847 case $target_os in
3848     aix)
3849         SHFLAGS=-shared
3850         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3851         enabled shared && add_ldflags -Wl,-brtl
3852         ;;
3853     haiku)
3854         prefix_default="/boot/common"
3855         network_extralibs="-lnetwork"
3856         host_libs=
3857         ;;
3858     sunos)
3859         SHFLAGS='-shared -Wl,-h,$$(@F)'
3860         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3861         network_extralibs="-lsocket -lnsl"
3862         # When using suncc to build, the Solaris linker will mark
3863         # an executable with each instruction set encountered by
3864         # the Solaris assembler.  As our libraries contain their own
3865         # guards for processor-specific code, instead suppress
3866         # generation of the HWCAPS ELF section on Solaris x86 only.
3867         enabled_all suncc x86 &&
3868             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3869             add_ldflags -Wl,-M,mapfile
3870         nm_default='nm -P -g'
3871         ;;
3872     netbsd)
3873         disable symver
3874         oss_indev_extralibs="-lossaudio"
3875         oss_outdev_extralibs="-lossaudio"
3876         enabled gcc || check_ldflags -Wl,-zmuldefs
3877         ;;
3878     openbsd|bitrig)
3879         disable symver
3880         SHFLAGS='-shared'
3881         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3882         SLIB_INSTALL_LINKS=
3883         oss_indev_extralibs="-lossaudio"
3884         oss_outdev_extralibs="-lossaudio"
3885         ;;
3886     dragonfly)
3887         disable symver
3888         ;;
3889     freebsd)
3890         ;;
3891     bsd/os)
3892         add_extralibs -lpoll -lgnugetopt
3893         strip="strip -d"
3894         ;;
3895     darwin)
3896         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3897         enabled ppc && add_asflags -force_cpusubtype_ALL
3898         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3899         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3900         strip="${strip} -x"
3901         add_ldflags -Wl,-dynamic,-search_paths_first
3902         SLIBSUF=".dylib"
3903         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3904         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3905         objformat="macho"
3906         enabled x86_64 && objformat="macho64"
3907         enabled_any pic shared ||
3908             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3909         ;;
3910     mingw32*)
3911         if test $target_os = "mingw32ce"; then
3912             disable network
3913         else
3914             target_os=mingw32
3915         fi
3916         LIBTARGET=i386
3917         if enabled x86_64; then
3918             LIBTARGET="i386:x86-64"
3919         elif enabled arm; then
3920             LIBTARGET=arm-wince
3921         fi
3922         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3923         check_ldflags -Wl,--nxcompat
3924         check_ldflags -Wl,--dynamicbase
3925         shlibdir_default="$bindir_default"
3926         SLIBPREF=""
3927         SLIBSUF=".dll"
3928         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3929         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3930         dlltool="${cross_prefix}dlltool"
3931         if check_cmd lib.exe -list; then
3932             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3933             if enabled x86_64; then
3934                 LIBTARGET=x64
3935             fi
3936         elif check_cmd $dlltool --version; then
3937             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3938         fi
3939         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3940         SLIB_INSTALL_LINKS=
3941         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3942         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3943         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3944         objformat="win32"
3945         ranlib=:
3946         enable dos_paths
3947         ;;
3948     win32|win64)
3949         disable symver
3950         if enabled shared; then
3951             # Link to the import library instead of the normal static library
3952             # for shared libs.
3953             LD_LIB='%.lib'
3954             # Cannot build both shared and static libs with MSVC or icl.
3955             disable static
3956         fi
3957         shlibdir_default="$bindir_default"
3958         SLIBPREF=""
3959         SLIBSUF=".dll"
3960         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3961         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3962         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3963         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3964         SLIB_INSTALL_LINKS=
3965         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3966         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3967         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3968         objformat="win32"
3969         ranlib=:
3970         enable dos_paths
3971         ;;
3972     cygwin*)
3973         target_os=cygwin
3974         shlibdir_default="$bindir_default"
3975         SLIBPREF="cyg"
3976         SLIBSUF=".dll"
3977         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3978         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3979         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3980         SLIB_INSTALL_LINKS=
3981         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3982         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3983         objformat="win32"
3984         enable dos_paths
3985         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3986         ;;
3987     *-dos|freedos|opendos)
3988         network_extralibs="-lsocket"
3989         objformat="coff"
3990         enable dos_paths
3991         add_cppflags -U__STRICT_ANSI__
3992         ;;
3993     linux)
3994         enable dv1394
3995         ;;
3996     irix*)
3997         target_os=irix
3998         ranlib="echo ignoring ranlib"
3999         ;;
4000     os/2*)
4001         strip="lxlite -CS"
4002         ln_s="cp -f"
4003         objformat="aout"
4004         add_cppflags -D_GNU_SOURCE
4005         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4006         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4007         LIBSUF="_s.a"
4008         SLIBPREF=""
4009         SLIBSUF=".dll"
4010         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4011         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4012         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4013             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4014             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4015             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4016             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4017             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4018         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4019             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4020         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4021         enable dos_paths
4022         enable_weak os2threads
4023         ;;
4024     gnu/kfreebsd)
4025         add_cppflags -D_BSD_SOURCE
4026         ;;
4027     gnu)
4028         ;;
4029     qnx)
4030         add_cppflags -D_QNX_SOURCE
4031         network_extralibs="-lsocket"
4032         ;;
4033     symbian)
4034         SLIBSUF=".dll"
4035         enable dos_paths
4036         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4037         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4038         add_ldflags -Wl,--target1-abs,--no-undefined \
4039                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4040                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4041         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4042                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4043                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4044         ;;
4045     osf1)
4046         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4047         ;;
4048     minix)
4049         ;;
4050     plan9)
4051         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4052                      -D_REENTRANT_SOURCE        \
4053                      -D_RESEARCH_SOURCE         \
4054                      -DFD_SETSIZE=96            \
4055                      -DHAVE_SOCK_OPTS
4056         add_compat strtod.o strtod=avpriv_strtod
4057         network_extralibs='-lbsd'
4058         exeobjs=compat/plan9/main.o
4059         disable ffserver
4060         cp_f='cp'
4061         ;;
4062     none)
4063         ;;
4064     *)
4065         die "Unknown OS '$target_os'."
4066         ;;
4067 esac
4068
4069 # determine libc flavour
4070
4071 probe_libc(){
4072     pfx=$1
4073     pfx_no_=${pfx%_}
4074     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4075     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4076         eval ${pfx}libc_type=uclibc
4077         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4078     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4079         eval ${pfx}libc_type=glibc
4080         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4081     # MinGW headers can be installed on Cygwin, so check for newlib first.
4082     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4083         eval ${pfx}libc_type=newlib
4084         add_${pfx}cppflags -U__STRICT_ANSI__
4085     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4086     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4087         eval ${pfx}libc_type=mingw64
4088         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4089             add_compat msvcrt/snprintf.o
4090             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4091         fi
4092         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4093         eval test \$${pfx_no_}cc_type = "gcc" &&
4094             add_${pfx}cppflags -D__printf__=__gnu_printf__
4095     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4096          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4097         eval ${pfx}libc_type=mingw32
4098         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4099             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4100             die "ERROR: MinGW32 runtime version must be >= 3.15."
4101         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4102         eval test \$${pfx_no_}cc_type = "gcc" &&
4103             add_${pfx}cppflags -D__printf__=__gnu_printf__
4104     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4105         eval ${pfx}libc_type=msvcrt
4106         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4107         # 0x601 by default unless something else is set by the user.
4108         # This can easily lead to us detecting functions only present
4109         # in such new versions and producing binaries requiring windows 7.0.
4110         # Therefore explicitly set the default to XP unless the user has
4111         # set something else on the command line.
4112         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4113             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4114     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4115         eval ${pfx}libc_type=klibc
4116     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4117         eval ${pfx}libc_type=bionic
4118     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4119         eval ${pfx}libc_type=solaris
4120         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4121     fi
4122 }
4123
4124 probe_libc
4125 test -n "$libc_type" && enable libc_$libc_type
4126 probe_libc host_
4127 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4128
4129 case $libc_type in
4130     bionic)
4131         add_compat strtod.o strtod=avpriv_strtod
4132         ;;
4133     msvcrt)
4134         add_compat strtod.o strtod=avpriv_strtod
4135         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4136                                      _snprintf=avpriv_snprintf  \
4137                                      vsnprintf=avpriv_vsnprintf
4138         ;;
4139 esac
4140
4141 # hacks for compiler/libc/os combinations
4142
4143 if enabled_all tms470 libc_glibc; then
4144     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4145     add_cppflags -D__USER_LABEL_PREFIX__=
4146     add_cppflags -D__builtin_memset=memset
4147     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4148     add_cflags   -pds=48    # incompatible redefinition of macro
4149 fi
4150
4151 if enabled_all ccc libc_glibc; then
4152     add_ldflags -Wl,-z,now  # calls to libots crash without this
4153 fi
4154
4155 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4156     add_cppflags '-I\$(SRC_PATH)/compat/float'
4157
4158 esc(){
4159     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4160 }
4161
4162 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4163
4164 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4165
4166 set_default $PATHS_LIST
4167 set_default nm
4168
4169 # we need to build at least one lib type
4170 if ! enabled_any static shared; then
4171     cat <<EOF
4172 At least one library type must be built.
4173 Specify --enable-static to build the static libraries or --enable-shared to
4174 build the shared libraries as well. To only build the shared libraries specify
4175 --disable-static in addition to --enable-shared.
4176 EOF
4177     exit 1;
4178 fi
4179
4180 die_license_disabled() {
4181     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4182 }
4183
4184 die_license_disabled_gpl() {
4185     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4186 }
4187
4188 die_license_disabled gpl frei0r
4189 die_license_disabled gpl libcdio
4190 die_license_disabled gpl libutvideo
4191 die_license_disabled gpl libvidstab
4192 die_license_disabled gpl libx264
4193 die_license_disabled gpl libx265
4194 die_license_disabled gpl libxavs
4195 die_license_disabled gpl libxvid
4196 die_license_disabled gpl libzvbi
4197 die_license_disabled gpl x11grab
4198
4199 die_license_disabled nonfree libaacplus
4200 die_license_disabled nonfree libfaac
4201 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4202 enabled gpl && die_license_disabled_gpl nonfree openssl
4203
4204 die_license_disabled version3 libopencore_amrnb
4205 die_license_disabled version3 libopencore_amrwb
4206 die_license_disabled version3 libvo_aacenc
4207 die_license_disabled version3 libvo_amrwbenc
4208
4209 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4210
4211 disabled optimizations || check_cflags -fomit-frame-pointer
4212
4213 enable_weak_pic() {
4214     disabled pic && return
4215     enable pic
4216     add_cppflags -DPIC
4217     case "$target_os" in
4218     mingw*|cygwin*)
4219         ;;
4220     *)
4221         add_cflags -fPIC
4222         ;;
4223     esac
4224     add_asflags  -fPIC
4225 }
4226
4227 enabled pic && enable_weak_pic
4228
4229 check_cc <<EOF || die "Symbol mangling check failed."
4230 int ff_extern;
4231 EOF
4232 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4233 extern_prefix=${sym%%ff_extern*}
4234
4235 check_cc <<EOF && enable_weak inline_asm
4236 void foo(void) { __asm__ volatile ("" ::); }
4237 EOF
4238
4239 _restrict=
4240 for restrict_keyword in restrict __restrict__ __restrict; do
4241     check_cc <<EOF && _restrict=$restrict_keyword && break
4242 void foo(char * $restrict_keyword p);
4243 EOF
4244 done
4245
4246 check_cc <<EOF && enable pragma_deprecated
4247 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4248 EOF
4249
4250 check_cc <<EOF && enable attribute_packed
4251 struct { int x; } __attribute__((packed)) x;
4252 EOF
4253
4254 check_cc <<EOF && enable attribute_may_alias
4255 union { int x; } __attribute__((may_alias)) x;
4256 EOF
4257
4258 check_cc <<EOF || die "endian test failed"
4259 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4260 EOF
4261 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4262
4263 check_inline_asm inline_asm_labels '"1:\n"'
4264
4265 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4266
4267 if enabled aarch64; then
4268     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4269     # internal assembler in clang 3.3 does not support this instruction
4270     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4271     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4272
4273     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4274
4275 elif enabled alpha; then
4276
4277     check_cflags -mieee
4278
4279 elif enabled arm; then
4280
4281     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4282 float func(float a, float b){ return a+b; }
4283 EOF
4284
4285     enabled thumb && check_cflags -mthumb || check_cflags -marm
4286     nogas=die
4287
4288     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4289         enable vfp_args
4290     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4291         case "${cross_prefix:-$cc}" in
4292             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4293             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4294 __asm__ (".eabi_attribute 28, 1");
4295 int main(void) { return 0; }
4296 EOF
4297         esac
4298         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4299     fi
4300
4301     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4302     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4303     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4304     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4305     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4306     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4307
4308     [ $target_os = linux ] ||
4309         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4310             $ARCH_EXT_LIST_ARM
4311
4312     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4313
4314     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4315
4316 elif enabled mips; then
4317
4318     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4319     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4320      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4321     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4322      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4323     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4324      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4325     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4326      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4327
4328 elif enabled parisc; then
4329
4330     if enabled gcc; then
4331         case $($cc -dumpversion) in
4332             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4333         esac
4334     fi
4335
4336 elif enabled ppc; then
4337
4338     enable local_aligned_8 local_aligned_16 local_aligned_32
4339
4340     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4341     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4342     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4343     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4344
4345     # AltiVec flags: The FSF version of GCC differs from the Apple version
4346     if enabled altivec; then
4347         if ! enabled_any pic ppc64; then
4348             nogas=warn
4349         fi
4350         check_cflags -maltivec -mabi=altivec &&
4351         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4352         check_cflags -faltivec
4353
4354         # check if our compiler supports Motorola AltiVec C API
4355         check_cc <<EOF || disable altivec
4356 $inc_altivec_h
4357 int main(void) {
4358     vector signed int v1 = (vector signed int) { 0 };
4359     vector signed int v2 = (vector signed int) { 1 };
4360     v1 = vec_add(v1, v2);
4361     return 0;
4362 }
4363 EOF
4364
4365         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4366     fi
4367
4368 elif enabled x86; then
4369
4370     check_builtin rdtsc    intrin.h   "__rdtsc()"
4371     check_builtin mm_empty mmintrin.h "_mm_empty()"
4372
4373     enable local_aligned_8 local_aligned_16 local_aligned_32
4374
4375     # check whether EBP is available on x86
4376     # As 'i' is stored on the stack, this program will crash
4377     # if the base pointer is used to access it because the
4378     # base pointer is cleared in the inline assembly code.
4379     check_exec_crash <<EOF && enable ebp_available
4380 volatile int i=0;
4381 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4382 return i;
4383 EOF
4384
4385     # check whether EBX is available on x86
4386     check_inline_asm ebx_available '""::"b"(0)' &&
4387         check_inline_asm ebx_available '"":::"%ebx"'
4388
4389     # check whether xmm clobbers are supported
4390     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4391
4392     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4393         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4394
4395     # check whether binutils is new enough to compile AVX/SSSE3/MMXEXT
4396     enabled avx    && check_inline_asm avx_inline    '"vextractf128 $1, %ymm0, %xmm1"'
4397     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4398     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4399
4400     if ! disabled_any asm mmx yasm; then
4401         if check_cmd $yasmexe --version; then
4402             enabled x86_64 && yasm_extra="-m amd64"
4403             yasm_debug="-g dwarf2"
4404         elif check_cmd nasm -v; then
4405             yasmexe=nasm
4406             yasm_debug="-g -F dwarf"
4407             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4408         fi
4409
4410         YASMFLAGS="-f $objformat $yasm_extra"
4411         enabled pic               && append YASMFLAGS "-DPIC"
4412         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4413         case "$objformat" in
4414             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4415         esac
4416
4417         check_yasm "movbe ecx, [5]" && enable yasm ||
4418             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4419         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4420         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4421         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4422         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4423         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4424         check_yasm "CPU amdnop" || disable cpunop
4425     fi
4426
4427     case "$cpu" in
4428         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4429             disable fast_clz
4430         ;;
4431     esac
4432
4433 fi
4434
4435 if enabled asm; then
4436     as=${gas:=$as}
4437     check_as <<EOF && enable gnu_as || \
4438         $nogas "GNU assembler not found, install gas-preprocessor"
4439 .macro m n
4440 \n: .int 0
4441 .endm
4442 m x
4443 EOF
4444 fi
4445
4446 check_ldflags -Wl,--as-needed
4447
4448 if check_func dlopen; then
4449     ldl=
4450 elif check_func dlopen -ldl; then
4451     ldl=-ldl
4452 fi
4453
4454 if ! disabled network; then
4455     check_func getaddrinfo $network_extralibs
4456     check_func getservbyport $network_extralibs
4457     check_func inet_aton $network_extralibs
4458
4459     check_type netdb.h "struct addrinfo"
4460     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4461     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4462     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4463     check_type poll.h "struct pollfd"
4464     check_type netinet/sctp.h "struct sctp_event_subscribe"
4465     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4466     check_type netinet/in.h "struct sockaddr_in6"
4467     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4468     check_type "sys/types.h sys/socket.h" socklen_t
4469
4470     # Prefer arpa/inet.h over winsock2
4471     if check_header arpa/inet.h ; then
4472         check_func closesocket
4473     elif check_header winsock2.h ; then
4474         check_func_headers winsock2.h closesocket -lws2 &&
4475             network_extralibs="-lws2" ||
4476         { check_func_headers winsock2.h closesocket -lws2_32 &&
4477             network_extralibs="-lws2_32"; } || disable winsock2_h network
4478         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4479
4480         check_type ws2tcpip.h socklen_t
4481         check_type ws2tcpip.h "struct addrinfo"
4482         check_type ws2tcpip.h "struct group_source_req"
4483         check_type ws2tcpip.h "struct ip_mreq_source"
4484         check_type ws2tcpip.h "struct ipv6_mreq"
4485         check_type winsock2.h "struct pollfd"
4486         check_struct winsock2.h "struct sockaddr" sa_len
4487         check_type ws2tcpip.h "struct sockaddr_in6"
4488         check_type ws2tcpip.h "struct sockaddr_storage"
4489     else
4490         disable network
4491     fi
4492 fi
4493
4494 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4495 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4496 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4497 check_builtin sarestart signal.h "SA_RESTART"
4498 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4499
4500 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4501 check_func  ${malloc_prefix}memalign            && enable memalign
4502 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4503
4504 check_func  access
4505 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4506 check_func  fcntl
4507 check_func  fork
4508 check_func  gethrtime
4509 check_func  getopt
4510 check_func  getrusage
4511 check_func  gettimeofday
4512 check_func  isatty
4513 check_func  localtime_r
4514 check_func  mach_absolute_time
4515 check_func  mkstemp
4516 check_func  mmap
4517 check_func  mprotect
4518 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4519 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4520 check_func  sched_getaffinity
4521 check_func  setrlimit
4522 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4523 check_func  strerror_r
4524 check_func  sysconf
4525 check_func  sysctl
4526 check_func  usleep
4527
4528 check_func_headers conio.h kbhit
4529 check_func_headers io.h setmode
4530 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4531 check_func_headers stdlib.h getenv
4532
4533 check_func_headers windows.h CoTaskMemFree -lole32
4534 check_func_headers windows.h GetProcessAffinityMask
4535 check_func_headers windows.h GetProcessTimes
4536 check_func_headers windows.h GetSystemTimeAsFileTime
4537 check_func_headers windows.h MapViewOfFile
4538 check_func_headers windows.h PeekNamedPipe
4539 check_func_headers windows.h SetConsoleTextAttribute
4540 check_func_headers windows.h Sleep
4541 check_func_headers windows.h VirtualAlloc
4542 check_func_headers glob.h glob
4543 enabled xlib &&
4544     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4545
4546 check_header cl/cl.h
4547 check_header direct.h
4548 check_header dlfcn.h
4549 check_header dxva.h
4550 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4551 check_header io.h
4552 check_header libcrystalhd/libcrystalhd_if.h
4553 check_header mach/mach_time.h
4554 check_header malloc.h
4555 check_header poll.h
4556 check_header sys/mman.h
4557 check_header sys/param.h
4558 check_header sys/resource.h
4559 check_header sys/select.h
4560 check_header sys/time.h
4561 check_header sys/un.h
4562 check_header termios.h
4563 check_header unistd.h
4564 check_header vdpau/vdpau.h
4565 check_header vdpau/vdpau_x11.h
4566 check_header VideoDecodeAcceleration/VDADecoder.h
4567 check_header windows.h
4568 check_header X11/extensions/XvMClib.h
4569 check_header asm/types.h
4570
4571 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4572 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4573 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4574
4575 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4576
4577 if ! disabled w32threads && ! enabled pthreads; then
4578     check_func_headers "windows.h process.h" _beginthreadex &&
4579         enable w32threads || disable w32threads
4580 fi
4581
4582 # check for some common methods of building with pthread support
4583 # do this before the optional library checks as some of them require pthreads
4584 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4585     enable pthreads
4586     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4587         add_cflags -pthread
4588         add_extralibs -pthread
4589     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4590         add_cflags -pthreads
4591         add_extralibs -pthreads
4592     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4593         add_extralibs -lpthreadGC2
4594     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4595         :
4596     elif ! check_func pthread_join && ! check_func pthread_create; then
4597         disable pthreads
4598     fi
4599     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4600 fi
4601
4602
4603 if enabled pthreads; then
4604   check_func pthread_cancel
4605 fi
4606
4607 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4608 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4609
4610 check_lib math.h sin -lm && LIBM="-lm"
4611 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4612
4613 atan2f_args=2
4614 ldexpf_args=2
4615 powf_args=2
4616
4617 for func in $MATH_FUNCS; do
4618     eval check_mathfunc $func \${${func}_args:-1}
4619 done
4620
4621 # these are off by default, so fail if requested and not available
4622 enabled avfoundation_indev && { check_header_oc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
4623 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4624                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4625                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4626 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4627 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4628 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4629 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4630 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4631 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4632 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4633 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4634 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4635 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4636                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4637                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4638 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4639 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4640 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4641 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"
4642 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4643 enabled fontconfig        && enable libfontconfig
4644 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4645 enabled libfreetype       && require_libfreetype
4646 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4647 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4648                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4649                                done || die "ERROR: libgsm not found"; }
4650 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4651 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4652 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4653 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4654 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4655 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4656 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4657 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4658                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4659                                die "ERROR: libopenjpeg not found"; }
4660 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4661 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4662 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4663 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4664 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4665 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4666 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4667 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4668 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4669 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4670     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4671     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4672 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4673 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4674                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4675                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4676 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4677 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4678 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4679 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4680 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4681 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4682 enabled libvpx            && {
4683     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4684                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4685     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 ||
4686                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4687     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4688     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; } }
4689 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4690 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4691 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4692                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4693                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4694 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4695                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4696                                die "ERROR: libx265 version must be >= 13."; }
4697 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4698 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4699 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4700 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4701 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4702                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4703                                die "ERROR: openal not found"; } &&
4704                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4705                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4706 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4707                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4708                                die "ERROR: opencl not found"; } &&
4709                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4710                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4711                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4712 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4713                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4714                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4715                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4716                                die "ERROR: opengl not found."
4717                              }
4718 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4719                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4720                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4721                                die "ERROR: openssl not found"; }
4722 enabled qtkit_indev      && { check_header_oc QTKit/QTKit.h || disable qtkit_indev; }
4723
4724 if enabled gnutls; then
4725     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4726     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4727 fi
4728
4729 # libdc1394 check
4730 if enabled libdc1394; then
4731     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4732         enable libdc1394_2; } ||
4733     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4734         enable libdc1394_1; } ||
4735     die "ERROR: No version of libdc1394 found "
4736 fi
4737
4738 SDL_CONFIG="${cross_prefix}sdl-config"
4739 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4740     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4741     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4742     enable sdl
4743 else
4744   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4745     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4746     sdl_libs=$("${SDL_CONFIG}" --libs)
4747     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4748     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4749     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4750     enable sdl
4751   fi
4752 fi
4753 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4754
4755 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4756 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4757 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4758 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4759 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4760
4761 check_header linux/fb.h
4762 check_header linux/videodev.h
4763 check_header linux/videodev2.h
4764 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4765
4766 check_header sys/videoio.h
4767
4768 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4769 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4770 # w32api 3.12 had it defined wrong
4771 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4772
4773 check_type "dshow.h" IBaseFilter
4774
4775 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4776 { check_header dev/bktr/ioctl_meteor.h &&
4777   check_header dev/bktr/ioctl_bt848.h; } ||
4778 { check_header machine/ioctl_meteor.h &&
4779   check_header machine/ioctl_bt848.h; } ||
4780 { check_header dev/video/meteor/ioctl_meteor.h &&
4781   check_header dev/video/bktr/ioctl_bt848.h; } ||
4782 check_header dev/ic/bt8xx.h
4783
4784 check_header sndio.h
4785 if check_struct sys/soundcard.h audio_buf_info bytes; then
4786     enable_safe sys/soundcard.h
4787 else
4788     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4789     #include <sys/soundcard.h>
4790     audio_buf_info abc;
4791 EOF
4792 fi
4793 check_header soundcard.h
4794
4795 enabled_any alsa_indev alsa_outdev &&
4796     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4797
4798 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4799     check_func jack_port_get_latency_range -ljack
4800
4801 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4802
4803 if enabled libcdio; then
4804     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4805     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4806     die "ERROR: libcdio-paranoia not found"
4807 fi
4808
4809 enabled xlib &&
4810     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
4811
4812 enabled x11grab                                           &&
4813 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4814 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4815 { enabled xlib || die "ERROR: Xlib not found"; }
4816
4817 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
4818
4819 enabled dxva2api_h &&
4820     check_cc <<EOF && enable dxva2api_cobj
4821 #define _WIN32_WINNT 0x0600
4822 #define COBJMACROS
4823 #include <windows.h>
4824 #include <d3d9.h>
4825 #include <dxva2api.h>
4826 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
4827 EOF
4828
4829 enabled vaapi &&
4830     check_lib va/va.h vaInitialize -lva ||
4831     disable vaapi
4832
4833 enabled vdpau &&
4834     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4835     disable vdpau
4836
4837 enabled vdpau && enabled xlib &&
4838     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4839     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
4840     enable vdpau_x11
4841
4842 # Funny iconv installations are not unusual, so check it after all flags have been set
4843 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4844
4845 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4846
4847 # add some useful compiler flags if supported
4848 check_cflags -Wdeclaration-after-statement
4849 check_cflags -Wall
4850 check_cflags -Wdisabled-optimization
4851 check_cflags -Wpointer-arith
4852 check_cflags -Wredundant-decls
4853 check_cflags -Wwrite-strings
4854 check_cflags -Wtype-limits
4855 check_cflags -Wundef
4856 check_cflags -Wmissing-prototypes
4857 check_cflags -Wno-pointer-to-int-cast
4858 check_cflags -Wstrict-prototypes
4859 check_cflags -Wempty-body
4860 enabled extra_warnings && check_cflags -Winline
4861
4862 check_disable_warning(){
4863     warning_flag=-W${1#-Wno-}
4864     test_cflags $warning_flag && add_cflags $1
4865 }
4866
4867 check_disable_warning -Wno-parentheses
4868 check_disable_warning -Wno-switch
4869 check_disable_warning -Wno-format-zero-length
4870 check_disable_warning -Wno-pointer-sign
4871
4872 # add some linker flags
4873 check_ldflags -Wl,--warn-common
4874 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4875 enabled rpath && add_ldflags -Wl,-rpath,$libdir
4876 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4877
4878 # add some strip flags
4879 # -wN '..@*' is more selective than -x, but not available everywhere.
4880 check_stripflags -wN \'..@*\' || check_stripflags -x
4881
4882 enabled neon_clobber_test &&
4883     check_ldflags -Wl,--wrap,avcodec_open2              \
4884                   -Wl,--wrap,avcodec_decode_audio4      \
4885                   -Wl,--wrap,avcodec_decode_video2      \
4886                   -Wl,--wrap,avcodec_decode_subtitle2   \
4887                   -Wl,--wrap,avcodec_encode_audio2      \
4888                   -Wl,--wrap,avcodec_encode_video2      \
4889                   -Wl,--wrap,avcodec_encode_subtitle    \
4890                   -Wl,--wrap,swr_convert                \
4891                   -Wl,--wrap,avresample_convert ||
4892     disable neon_clobber_test
4893
4894 enabled xmm_clobber_test &&
4895     check_ldflags -Wl,--wrap,avcodec_open2              \
4896                   -Wl,--wrap,avcodec_decode_audio4      \
4897                   -Wl,--wrap,avcodec_decode_video2      \
4898                   -Wl,--wrap,avcodec_decode_subtitle2   \
4899                   -Wl,--wrap,avcodec_encode_audio2      \
4900                   -Wl,--wrap,avcodec_encode_video       \
4901                   -Wl,--wrap,avcodec_encode_video2      \
4902                   -Wl,--wrap,avcodec_encode_subtitle    \
4903                   -Wl,--wrap,swr_convert                \
4904                   -Wl,--wrap,avresample_convert         \
4905                   -Wl,--wrap,sws_scale ||
4906     disable xmm_clobber_test
4907
4908 echo "X{};" > $TMPV
4909 if test_ldflags -Wl,--version-script,$TMPV; then
4910     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4911     check_cc <<EOF && enable symver_asm_label
4912 void ff_foo(void) __asm__ ("av_foo@VERSION");
4913 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4914 EOF
4915     check_cc <<EOF && enable symver_gnu_asm
4916 __asm__(".symver ff_foo,av_foo@VERSION");
4917 void ff_foo(void) {}
4918 EOF
4919 fi
4920
4921 if [ -z "$optflags" ]; then
4922     if enabled small; then
4923         optflags=$cflags_size
4924     elif enabled optimizations; then
4925         optflags=$cflags_speed
4926     else
4927         optflags=$cflags_noopt
4928     fi
4929 fi
4930
4931 check_optflags(){
4932     check_cflags "$@"
4933     enabled lto && check_ldflags "$@"
4934 }
4935
4936
4937 if enabled lto; then
4938     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4939     check_cflags  -flto
4940     check_ldflags -flto $cpuflags
4941     disable inline_asm_direct_symbol_refs
4942 fi
4943
4944 check_optflags $optflags
4945 check_optflags -fno-math-errno
4946 check_optflags -fno-signed-zeros
4947
4948 enabled ftrapv && check_cflags -ftrapv
4949
4950 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4951 int x;
4952 EOF
4953
4954
4955 if enabled icc; then
4956     # Just warnings, no remarks
4957     check_cflags -w1
4958     # -wd: Disable following warnings
4959     # 144, 167, 556: -Wno-pointer-sign
4960     # 188: enumerated type mixed with another type
4961     # 1292: attribute "foo" ignored
4962     # 1419: external declaration in primary source file
4963     # 10006: ignoring unknown option -fno-signed-zeros
4964     # 10148: ignoring unknown option -Wno-parentheses
4965     # 10156: ignoring option '-W'; no argument required
4966     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4967     # 11030: Warning unknown option --as-needed
4968     # 10156: ignoring option '-export'; no argument required
4969     check_ldflags -wd10156,11030
4970     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4971     enable ebp_available
4972     # The test above does not test linking
4973     enabled lto && disable symver_asm_label
4974     if enabled x86_32; then
4975         icc_version=$($cc -dumpversion)
4976         test ${icc_version%%.*} -ge 11 &&
4977             check_cflags -falign-stack=maintain-16-byte ||
4978             disable aligned_stack
4979     fi
4980 elif enabled ccc; then
4981     # disable some annoying warnings
4982     add_cflags -msg_disable bitnotint
4983     add_cflags -msg_disable mixfuncvoid
4984     add_cflags -msg_disable nonstandcast
4985     add_cflags -msg_disable unsupieee
4986 elif enabled gcc; then
4987     check_optflags -fno-tree-vectorize
4988     check_cflags -Werror=implicit-function-declaration
4989     check_cflags -Werror=missing-prototypes
4990     check_cflags -Werror=return-type
4991     check_cflags -Werror=vla
4992     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4993 elif enabled llvm_gcc; then
4994     check_cflags -mllvm -stack-alignment=16
4995 elif enabled clang; then
4996     check_cflags -mllvm -stack-alignment=16
4997     check_cflags -Qunused-arguments
4998     check_cflags -Werror=implicit-function-declaration
4999     check_cflags -Werror=missing-prototypes
5000     check_cflags -Werror=return-type
5001 elif enabled cparser; then
5002     add_cflags -Wno-missing-variable-declarations
5003     add_cflags -Wno-empty-statement
5004 elif enabled armcc; then
5005     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5006     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5007     # 2523: use of inline assembler is deprecated
5008     add_cflags -W${armcc_opt},--diag_suppress=2523
5009     add_cflags -W${armcc_opt},--diag_suppress=1207
5010     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5011     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5012     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5013     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5014 elif enabled tms470; then
5015     add_cflags -pds=824 -pds=837
5016     disable inline_asm
5017 elif enabled pathscale; then
5018     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5019 elif enabled_any msvc icl; then
5020     enabled x86_32 && disable aligned_stack
5021     enabled_all x86_32 debug && add_cflags -Oy-
5022     enabled debug && add_ldflags -debug
5023     enable pragma_deprecated
5024     if enabled icl; then
5025         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5026         # (correctly) on icl 13.x.
5027         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5028             add_cflags -Qansi-alias
5029         # Some inline asm is not compilable in debug
5030         if enabled debug; then
5031             disable ebp_available
5032             disable ebx_available
5033         fi
5034     fi
5035     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 onwards actually has log2.
5036     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5037 fi
5038
5039 case $as_type in
5040     clang)
5041         add_asflags -Qunused-arguments
5042     ;;
5043 esac
5044
5045 case $ld_type in
5046     clang)
5047         check_ldflags -Qunused-arguments
5048     ;;
5049 esac
5050
5051 case $target_os in
5052     osf1)
5053         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5054     ;;
5055     plan9)
5056         add_cppflags -Dmain=plan9_main
5057     ;;
5058 esac
5059
5060 enable frame_thread_encoder
5061
5062 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5063
5064 check_deps $CONFIG_LIST       \
5065            $CONFIG_EXTRA      \
5066            $HAVE_LIST         \
5067            $ALL_COMPONENTS    \
5068
5069 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"
5070
5071
5072 if test $target_os = "haiku"; then
5073     disable memalign
5074     disable posix_memalign
5075 fi
5076
5077 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
5078     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
5079     enable dxva2_lib
5080
5081 ! enabled_any memalign posix_memalign aligned_malloc &&
5082     enabled_any $need_memalign && enable memalign_hack
5083
5084 # add_dep lib dep
5085 # -> enable ${lib}_deps_${dep}
5086 # -> add $dep to ${lib}_deps only once
5087 add_dep() {
5088     lib=$1
5089     dep=$2
5090     enabled "${lib}_deps_${dep}" && return 0
5091     enable  "${lib}_deps_${dep}"
5092     prepend "${lib}_deps" $dep
5093 }
5094
5095 # merge deps lib components
5096 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
5097 merge_deps() {
5098     lib=$1
5099     shift
5100     for comp in $*; do
5101         enabled $comp || continue
5102         eval "dep=\"\$${comp}_deps\""
5103         for d in $dep; do
5104             add_dep $lib $d
5105         done
5106     done
5107 }
5108
5109 merge_deps libavfilter $FILTER_LIST
5110
5111 for thread in $THREADS_LIST; do
5112     if enabled $thread; then
5113         test -n "$thread_type" &&
5114             die "ERROR: Only one thread type must be selected." ||
5115             thread_type="$thread"
5116     fi
5117 done
5118
5119 # conditional library dependencies, in linking order
5120 enabled aconvert_filter     && prepend avfilter_deps "swresample"
5121 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
5122 enabled aresample_filter    && prepend avfilter_deps "swresample"
5123 enabled asyncts_filter      && prepend avfilter_deps "avresample"
5124 enabled atempo_filter       && prepend avfilter_deps "avcodec"
5125 enabled decimate_filter     && prepend avfilter_deps "avcodec"
5126 enabled deshake_filter      && prepend avfilter_deps "avcodec"
5127 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
5128 enabled elbg_filter         && prepend avfilter_deps "avcodec"
5129 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
5130 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5131 enabled mp_filter           && prepend avfilter_deps "avcodec"
5132 enabled pan_filter          && prepend avfilter_deps "swresample"
5133 enabled pp_filter           && prepend avfilter_deps "postproc"
5134 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
5135 enabled resample_filter && prepend avfilter_deps "avresample"
5136 enabled sab_filter          && prepend avfilter_deps "swscale"
5137 enabled scale_filter    && prepend avfilter_deps "swscale"
5138 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
5139 enabled smartblur_filter    && prepend avfilter_deps "swscale"
5140 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
5141
5142 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
5143
5144 enabled opus_decoder    && prepend avcodec_deps "swresample"
5145
5146 expand_deps(){
5147     lib_deps=${1}_deps
5148     eval "deps=\$$lib_deps"
5149     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5150     unique $lib_deps
5151 }
5152
5153 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
5154 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
5155
5156 map 'expand_deps $v' $LIBRARY_LIST
5157
5158 echo "install prefix            $prefix"
5159 echo "source path               $source_path"
5160 echo "C compiler                $cc"
5161 echo "C library                 $libc_type"
5162 if test "$host_cc" != "$cc"; then
5163     echo "host C compiler           $host_cc"
5164     echo "host C library            $host_libc_type"
5165 fi
5166 echo "ARCH                      $arch ($cpu)"
5167 if test "$build_suffix" != ""; then
5168     echo "build suffix              $build_suffix"
5169 fi
5170 if test "$progs_suffix" != ""; then
5171     echo "progs suffix              $progs_suffix"
5172 fi
5173 if test "$extra_version" != ""; then
5174     echo "version string suffix     $extra_version"
5175 fi
5176 echo "big-endian                ${bigendian-no}"
5177 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5178 if enabled x86; then
5179     echo "${yasmexe}                      ${yasm-no}"
5180     echo "MMX enabled               ${mmx-no}"
5181     echo "MMXEXT enabled            ${mmxext-no}"
5182     echo "3DNow! enabled            ${amd3dnow-no}"
5183     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5184     echo "SSE enabled               ${sse-no}"
5185     echo "SSSE3 enabled             ${ssse3-no}"
5186     echo "AVX enabled               ${avx-no}"
5187     echo "XOP enabled               ${xop-no}"
5188     echo "FMA3 enabled              ${fma3-no}"
5189     echo "FMA4 enabled              ${fma4-no}"
5190     echo "i686 features enabled     ${i686-no}"
5191     echo "CMOV is fast              ${fast_cmov-no}"
5192     echo "EBX available             ${ebx_available-no}"
5193     echo "EBP available             ${ebp_available-no}"
5194 fi
5195 if enabled aarch64; then
5196     echo "NEON enabled              ${neon-no}"
5197     echo "VFP enabled               ${vfp-no}"
5198 fi
5199 if enabled arm; then
5200     echo "ARMv5TE enabled           ${armv5te-no}"
5201     echo "ARMv6 enabled             ${armv6-no}"
5202     echo "ARMv6T2 enabled           ${armv6t2-no}"
5203     echo "VFP enabled               ${vfp-no}"
5204     echo "NEON enabled              ${neon-no}"
5205     echo "THUMB enabled             ${thumb-no}"
5206 fi
5207 if enabled mips; then
5208     echo "MIPS FPU enabled          ${mipsfpu-no}"
5209     echo "MIPS32R2 enabled          ${mips32r2-no}"
5210     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5211     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5212 fi
5213 if enabled ppc; then
5214     echo "AltiVec enabled           ${altivec-no}"
5215     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5216     echo "dcbzl available           ${dcbzl-no}"
5217 fi
5218 echo "debug symbols             ${debug-no}"
5219 echo "strip symbols             ${stripping-no}"
5220 echo "optimize for size         ${small-no}"
5221 echo "optimizations             ${optimizations-no}"
5222 echo "static                    ${static-no}"
5223 echo "shared                    ${shared-no}"
5224 echo "postprocessing support    ${postproc-no}"
5225 echo "new filter support        ${avfilter-no}"
5226 echo "network support           ${network-no}"
5227 echo "threading support         ${thread_type-no}"
5228 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5229 echo "SDL support               ${sdl-no}"
5230 echo "opencl enabled            ${opencl-no}"
5231 echo "libzvbi enabled           ${libzvbi-no}"
5232 echo "texi2html enabled         ${texi2html-no}"
5233 echo "perl enabled              ${perl-no}"
5234 echo "pod2man enabled           ${pod2man-no}"
5235 echo "makeinfo enabled          ${makeinfo-no}"
5236 test -n "$random_seed" &&
5237     echo "random seed               ${random_seed}"
5238 echo
5239
5240 echo "External libraries:"
5241 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5242 echo
5243
5244 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5245     echo "Enabled ${type}s:"
5246     eval list=\$$(toupper $type)_LIST
5247     print_enabled '_*' $list | print_3_columns
5248     echo
5249 done
5250
5251 license="LGPL version 2.1 or later"
5252 if enabled nonfree; then
5253     license="nonfree and unredistributable"
5254 elif enabled gplv3; then
5255     license="GPL version 3 or later"
5256 elif enabled lgplv3; then
5257     license="LGPL version 3 or later"
5258 elif enabled gpl; then
5259     license="GPL version 2 or later"
5260 fi
5261
5262 echo "License: $license"
5263
5264 echo "Creating config.mak, config.h, and doc/config.texi..."
5265
5266 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5267
5268 enabled stripping || strip="echo skipping strip"
5269
5270 config_files="$TMPH config.mak doc/config.texi"
5271
5272 cat > config.mak <<EOF
5273 # Automatically generated by configure - do not modify!
5274 ifndef FFMPEG_CONFIG_MAK
5275 FFMPEG_CONFIG_MAK=1
5276 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5277 prefix=$prefix
5278 LIBDIR=\$(DESTDIR)$libdir
5279 SHLIBDIR=\$(DESTDIR)$shlibdir
5280 INCDIR=\$(DESTDIR)$incdir
5281 BINDIR=\$(DESTDIR)$bindir
5282 DATADIR=\$(DESTDIR)$datadir
5283 DOCDIR=\$(DESTDIR)$docdir
5284 MANDIR=\$(DESTDIR)$mandir
5285 SRC_PATH=$source_path
5286 ifndef MAIN_MAKEFILE
5287 SRC_PATH:=\$(SRC_PATH:.%=..%)
5288 endif
5289 CC_IDENT=$cc_ident
5290 ARCH=$arch
5291 CC=$cc
5292 CXX=$cxx
5293 AS=$as
5294 LD=$ld
5295 DEPCC=$dep_cc
5296 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5297 DEPAS=$as
5298 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5299 YASM=$yasmexe
5300 DEPYASM=$yasmexe
5301 AR=$ar
5302 ARFLAGS=$arflags
5303 AR_O=$ar_o
5304 RANLIB=$ranlib
5305 STRIP=$strip
5306 CP=cp -p
5307 LN_S=$ln_s
5308 CPPFLAGS=$CPPFLAGS
5309 CFLAGS=$CFLAGS
5310 CXXFLAGS=$CXXFLAGS
5311 ASFLAGS=$ASFLAGS
5312 AS_C=$AS_C
5313 AS_O=$AS_O
5314 CC_C=$CC_C
5315 CC_E=$CC_E
5316 CC_O=$CC_O
5317 CXX_C=$CXX_C
5318 CXX_O=$CXX_O
5319 LD_O=$LD_O
5320 LD_LIB=$LD_LIB
5321 LD_PATH=$LD_PATH
5322 DLLTOOL=$dlltool
5323 WINDRES=$windres
5324 DEPWINDRES=$dep_cc
5325 LDFLAGS=$LDFLAGS
5326 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5327 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5328 YASMFLAGS=$YASMFLAGS
5329 BUILDSUF=$build_suffix
5330 PROGSSUF=$progs_suffix
5331 FULLNAME=$FULLNAME
5332 LIBPREF=$LIBPREF
5333 LIBSUF=$LIBSUF
5334 LIBNAME=$LIBNAME
5335 SLIBPREF=$SLIBPREF
5336 SLIBSUF=$SLIBSUF
5337 EXESUF=$EXESUF
5338 EXTRA_VERSION=$extra_version
5339 CCDEP=$CCDEP
5340 CXXDEP=$CXXDEP
5341 CCDEP_FLAGS=$CCDEP_FLAGS
5342 ASDEP=$ASDEP
5343 ASDEP_FLAGS=$ASDEP_FLAGS
5344 CC_DEPFLAGS=$CC_DEPFLAGS
5345 AS_DEPFLAGS=$AS_DEPFLAGS
5346 HOSTCC=$host_cc
5347 HOSTLD=$host_ld
5348 HOSTCFLAGS=$host_cflags
5349 HOSTCPPFLAGS=$host_cppflags
5350 HOSTEXESUF=$HOSTEXESUF
5351 HOSTLDFLAGS=$host_ldflags
5352 HOSTLIBS=$host_libs
5353 DEPHOSTCC=$host_cc
5354 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5355 HOSTCCDEP=$HOSTCCDEP
5356 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5357 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5358 HOSTCC_C=$HOSTCC_C
5359 HOSTCC_O=$HOSTCC_O
5360 HOSTLD_O=$HOSTLD_O
5361 TARGET_EXEC=$target_exec $target_exec_args
5362 TARGET_PATH=$target_path
5363 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5364 CFLAGS-ffplay=$sdl_cflags
5365 ZLIB=$($ldflags_filter -lz)
5366 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5367 EXTRALIBS=$extralibs
5368 COMPAT_OBJS=$compat_objs
5369 EXEOBJS=$exeobjs
5370 INSTALL=$install
5371 LIBTARGET=${LIBTARGET}
5372 SLIBNAME=${SLIBNAME}
5373 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5374 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5375 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5376 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5377 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5378 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5379 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5380 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5381 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5382 NOREDZONE_FLAGS=$noredzone_flags
5383 EOF
5384
5385 get_version(){
5386     lcname=lib${1}
5387     name=$(toupper $lcname)
5388     file=$source_path/$lcname/version.h
5389     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5390     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5391     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5392     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5393     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5394     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5395 }
5396
5397 map 'get_version $v' $LIBRARY_LIST
5398
5399 map 'eval echo "FFLIBS-${v}=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5400
5401 print_program_libs(){
5402     eval "program_libs=\$${1}_libs"
5403     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5404 }
5405
5406 map 'print_program_libs $v' $PROGRAM_LIST
5407
5408 cat > $TMPH <<EOF
5409 /* Automatically generated by configure - do not modify! */
5410 #ifndef FFMPEG_CONFIG_H
5411 #define FFMPEG_CONFIG_H
5412 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5413 #define FFMPEG_LICENSE "$(c_escape $license)"
5414 #define CONFIG_THIS_YEAR 2014
5415 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5416 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5417 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5418 #define av_restrict $_restrict
5419 #define EXTERN_PREFIX "${extern_prefix}"
5420 #define EXTERN_ASM ${extern_prefix}
5421 #define BUILDSUF "$build_suffix"
5422 #define SLIBSUF "$SLIBSUF"
5423 #define HAVE_MMX2 HAVE_MMXEXT
5424 EOF
5425
5426 test -n "$assert_level" &&
5427     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5428
5429 test -n "$malloc_prefix" &&
5430     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5431
5432 if enabled yasm; then
5433     append config_files $TMPASM
5434     printf '' >$TMPASM
5435 fi
5436
5437 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5438
5439
5440 mkdir -p doc
5441 echo "@c auto-generated by configure" > doc/config.texi
5442
5443 print_config ARCH_   "$config_files" $ARCH_LIST
5444 print_config HAVE_   "$config_files" $HAVE_LIST
5445 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5446                                      $CONFIG_EXTRA      \
5447                                      $ALL_COMPONENTS    \
5448
5449 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5450 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5451
5452 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5453 cp_if_changed $TMPH config.h
5454 touch .config
5455
5456 enabled yasm && cp_if_changed $TMPASM config.asm
5457
5458 cat > $TMPH <<EOF
5459 /* Generated by ffconf */
5460 #ifndef AVUTIL_AVCONFIG_H
5461 #define AVUTIL_AVCONFIG_H
5462 EOF
5463
5464 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5465
5466 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5467
5468 cp_if_changed $TMPH libavutil/avconfig.h
5469
5470 if test -n "$WARNINGS"; then
5471     printf "\n$WARNINGS"
5472     enabled fatal_warnings && exit 1
5473 fi
5474
5475 # build pkg-config files
5476
5477 lib_version(){
5478     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
5479 }
5480
5481 pkgconfig_generate(){
5482     name=$1
5483     shortname=${name#lib}${build_suffix}
5484     comment=$2
5485     version=$3
5486     libs=$4
5487     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5488     requires=${requires%, }
5489     enabled ${name#lib} || return 0
5490     mkdir -p $name
5491     cat <<EOF > $name/$name${build_suffix}.pc
5492 prefix=$prefix
5493 exec_prefix=\${prefix}
5494 libdir=$libdir
5495 includedir=$incdir
5496
5497 Name: $name
5498 Description: $comment
5499 Version: $version
5500 Requires: $(enabled shared || echo $requires)
5501 Requires.private: $(enabled shared && echo $requires)
5502 Conflicts:
5503 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5504 Libs.private: $(enabled shared && echo $libs)
5505 Cflags: -I\${includedir}
5506 EOF
5507
5508 mkdir -p doc/examples/pc-uninstalled
5509 includedir=${source_path}
5510 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5511     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5512 prefix=
5513 exec_prefix=
5514 libdir=\${pcfiledir}/../../../$name
5515 includedir=${includedir}
5516
5517 Name: $name
5518 Description: $comment
5519 Version: $version
5520 Requires: $requires
5521 Conflicts:
5522 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5523 Cflags: -I\${includedir}
5524 EOF
5525 }
5526
5527 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
5528 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
5529 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
5530 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
5531 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
5532 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
5533 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs"
5534 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
5535 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"