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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --enable-rpath           use rpath to allow installing libraries in paths
  91                            not part of the dynamic linker search path
  92
  93 Licensing options:
  94   --enable-gpl             allow use of GPL code, the resulting libs
  95                            and binaries will be under GPL [no]
  96   --enable-version3        upgrade (L)GPL to version 3 [no]
  97   --enable-nonfree         allow use of nonfree code, the resulting libs
  98                            and binaries will be unredistributable [no]
  99
 100 Configuration options:
 101   --disable-static         do not build static libraries [no]
 102   --enable-shared          build shared libraries [no]
 103   --enable-small           optimize for size instead of speed
 104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 105   --enable-gray            enable full grayscale support (slower color)
 106   --disable-swscale-alpha  disable alpha channel support in swscale
 107   --disable-all            disable building components, libraries and programs
 108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 109   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
 110   --enable-raise-major     increase major version numbers in sonames [no]
 111
 112 Program options:
 113   --disable-programs       do not build command line programs
 114   --disable-ffmpeg         disable ffmpeg build
 115   --disable-ffplay         disable ffplay build
 116   --disable-ffprobe        disable ffprobe build
 117   --disable-ffserver       disable ffserver build
 118
 119 Documentation options:
 120   --disable-doc            do not build documentation
 121   --disable-htmlpages      do not build HTML documentation pages
 122   --disable-manpages       do not build man documentation pages
 123   --disable-podpages       do not build POD documentation pages
 124   --disable-txtpages       do not build text documentation pages
 125
 126 Component options:
 127   --disable-avdevice       disable libavdevice build
 128   --disable-avcodec        disable libavcodec build
 129   --disable-avformat       disable libavformat build
 130   --disable-avutil         disable libavutil build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [auto]
 137   --disable-w32threads     disable Win32 threads [auto]
 138   --disable-os2threads     disable OS/2 threads [auto]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148
 149 Hardware accelerators:
 150   --disable-dxva2          disable DXVA2 code [autodetect]
 151   --disable-vaapi          disable VAAPI code [autodetect]
 152   --disable-vda            disable VDA code [autodetect]
 153   --disable-vdpau          disable VDPAU code [autodetect]
 154
 155 Individual component options:
 156   --disable-everything     disable all components listed below
 157   --disable-encoder=NAME   disable encoder NAME
 158   --enable-encoder=NAME    enable encoder NAME
 159   --disable-encoders       disable all encoders
 160   --disable-decoder=NAME   disable decoder NAME
 161   --enable-decoder=NAME    enable decoder NAME
 162   --disable-decoders       disable all decoders
 163   --disable-hwaccel=NAME   disable hwaccel NAME
 164   --enable-hwaccel=NAME    enable hwaccel NAME
 165   --disable-hwaccels       disable all hwaccels
 166   --disable-muxer=NAME     disable muxer NAME
 167   --enable-muxer=NAME      enable muxer NAME
 168   --disable-muxers         disable all muxers
 169   --disable-demuxer=NAME   disable demuxer NAME
 170   --enable-demuxer=NAME    enable demuxer NAME
 171   --disable-demuxers       disable all demuxers
 172   --enable-parser=NAME     enable parser NAME
 173   --disable-parser=NAME    disable parser NAME
 174   --disable-parsers        disable all parsers
 175   --enable-bsf=NAME        enable bitstream filter NAME
 176   --disable-bsf=NAME       disable bitstream filter NAME
 177   --disable-bsfs           disable all bitstream filters
 178   --enable-protocol=NAME   enable protocol NAME
 179   --disable-protocol=NAME  disable protocol NAME
 180   --disable-protocols      disable all protocols
 181   --enable-indev=NAME      enable input device NAME
 182   --disable-indev=NAME     disable input device NAME
 183   --disable-indevs         disable input devices
 184   --enable-outdev=NAME     enable output device NAME
 185   --disable-outdev=NAME    disable output device NAME
 186   --disable-outdevs        disable output devices
 187   --disable-devices        disable all devices
 188   --enable-filter=NAME     enable filter NAME
 189   --disable-filter=NAME    disable filter NAME
 190   --disable-filters        disable all filters
 191
 192 External library support:
 193   --enable-avisynth        enable reading of AviSynth script files [no]
 194   --disable-bzlib          disable bzlib [autodetect]
 195   --enable-fontconfig      enable fontconfig
 196   --enable-frei0r          enable frei0r video filtering
 197   --enable-gnutls          enable gnutls [no]
 198   --disable-iconv          disable iconv [autodetect]
 199   --enable-ladspa          enable LADSPA audio filtering
 200   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 201   --enable-libass          enable libass subtitles rendering [no]
 202   --enable-libbluray       enable BluRay reading using libbluray [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 decoding 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   --host-cc=HOSTCC         use host C compiler HOSTCC
 290   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 291   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 292   --host-ld=HOSTLD         use host linker HOSTLD
 293   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 294   --host-libs=HLIBS        use libs HLIBS when linking for host
 295   --host-os=OS             compiler host OS [$target_os]
 296   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 297   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 298   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 299   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 300   --extra-version=STRING   version string suffix []
 301   --optflags=OPTFLAGS      override optimization-related compiler flags
 302   --build-suffix=SUFFIX    library name suffix []
 303   --enable-pic             build position-independent code
 304   --enable-thumb           compile for Thumb instruction set
 305   --enable-lto             use link-time optimization
 306
 307 Advanced options (experts only):
 308   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 309   --disable-symver         disable symbol versioning
 310   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 311   --disable-safe-bitstream-reader
 312                            disable buffer boundary checking in bitreaders
 313                            (faster, but may crash)
 314   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 315   --enable-sram            allow use of on-chip SRAM
 316
 317 Optimization options (experts only):
 318   --disable-asm            disable all assembler optimizations
 319   --disable-altivec        disable AltiVec optimizations
 320   --disable-amd3dnow       disable 3DNow! optimizations
 321   --disable-amd3dnowext    disable 3DNow! extended optimizations
 322   --disable-mmx            disable MMX optimizations
 323   --disable-mmxext         disable MMXEXT optimizations
 324   --disable-sse            disable SSE optimizations
 325   --disable-sse2           disable SSE2 optimizations
 326   --disable-sse3           disable SSE3 optimizations
 327   --disable-ssse3          disable SSSE3 optimizations
 328   --disable-sse4           disable SSE4 optimizations
 329   --disable-sse42          disable SSE4.2 optimizations
 330   --disable-avx            disable AVX optimizations
 331   --disable-xop            disable XOP optimizations
 332   --disable-fma3           disable FMA3 optimizations
 333   --disable-fma4           disable FMA4 optimizations
 334   --disable-avx2           disable AVX2 optimizations
 335   --disable-armv5te        disable armv5te optimizations
 336   --disable-armv6          disable armv6 optimizations
 337   --disable-armv6t2        disable armv6t2 optimizations
 338   --disable-vfp            disable VFP optimizations
 339   --disable-neon           disable NEON optimizations
 340   --disable-inline-asm     disable use of inline assembler
 341   --disable-yasm           disable use of yasm assembler
 342   --disable-mips32r2       disable MIPS32R2 optimizations
 343   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 344   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 345   --disable-mipsfpu        disable floating point MIPS optimizations
 346   --disable-fast-unaligned consider unaligned accesses slow
 347
 348 Developer options (useful when working on FFmpeg itself):
 349   --disable-debug          disable debugging symbols
 350   --enable-debug=LEVEL     set the debug level [$debuglevel]
 351   --disable-optimizations  disable compiler optimizations
 352   --enable-extra-warnings  enable more compiler warnings
 353   --disable-stripping      disable stripping of executables and shared libraries
 354   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 355                            2 causes a slowdown at runtime.
 356   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 357   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 358                            leaks and errors, using the specified valgrind binary.
 359                            Cannot be combined with --target-exec
 360   --enable-ftrapv          Trap arithmetic overflows
 361   --samples=PATH           location of test samples for FATE, if not set use
 362                            \$FATE_SAMPLES at make invocation time.
 363   --enable-neon-clobber-test check NEON registers for clobbering (should be
 364                            used only for debugging purposes)
 365   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 366                            should be used only for debugging purposes)
 367   --enable-random          randomly enable/disable components
 368   --disable-random
 369   --enable-random=LIST     randomly enable/disable specific components or
 370   --disable-random=LIST    component groups. LIST is a comma-separated list
 371                            of NAME[:PROB] entries where NAME is a component
 372                            (group) and PROB the probability associated with
 373                            NAME (default 0.5).
 374   --random-seed=VALUE      seed value for --enable/disable-random
 375
 376 NOTE: Object files are built at the place where configure is launched.
 377 EOF
 378   exit 0
 379 }
 380
 381 quotes='""'
 382
 383 log(){
 384     echo "$@" >> $logfile
 385 }
 386
 387 log_file(){
 388     log BEGIN $1
 389     pr -n -t $1 >> $logfile
 390     log END $1
 391 }
 392
 393 echolog(){
 394     log "$@"
 395     echo "$@"
 396 }
 397
 398 warn(){
 399     log "WARNING: $*"
 400     WARNINGS="${WARNINGS}WARNING: $*\n"
 401 }
 402
 403 die(){
 404     echolog "$@"
 405     cat <<EOF
 406
 407 If you think configure made a mistake, make sure you are using the latest
 408 version from Git.  If the latest version fails, report the problem to the
 409 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 410 EOF
 411     if disabled logging; then
 412         cat <<EOF
 413 Rerun configure with logging enabled (do not use --disable-logging), and
 414 include the log this produces with your report.
 415 EOF
 416     else
 417         cat <<EOF
 418 Include the log file "$logfile" produced by configure as this will help
 419 solving the problem.
 420 EOF
 421     fi
 422     exit 1
 423 }
 424
 425 # Avoid locale weirdness, besides we really just want to translate ASCII.
 426 toupper(){
 427     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 428 }
 429
 430 tolower(){
 431     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 432 }
 433
 434 c_escape(){
 435     echo "$*" | sed 's/["\\]/\\\0/g'
 436 }
 437
 438 sh_quote(){
 439     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 440     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 441     echo "$v"
 442 }
 443
 444 cleanws(){
 445     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
 446 }
 447
 448 filter(){
 449     pat=$1
 450     shift
 451     for v; do
 452         eval "case $v in $pat) echo $v ;; esac"
 453     done
 454 }
 455
 456 filter_out(){
 457     pat=$1
 458     shift
 459     for v; do
 460         eval "case $v in $pat) ;; *) echo $v ;; esac"
 461     done
 462 }
 463
 464 map(){
 465     m=$1
 466     shift
 467     for v; do eval $m; done
 468 }
 469
 470 add_suffix(){
 471     suffix=$1
 472     shift
 473     for v; do echo ${v}${suffix}; done
 474 }
 475
 476 set_all(){
 477     value=$1
 478     shift
 479     for var in $*; do
 480         eval $var=$value
 481     done
 482 }
 483
 484 set_weak(){
 485     value=$1
 486     shift
 487     for var; do
 488         eval : \${$var:=$value}
 489     done
 490 }
 491
 492 sanitize_var_name(){
 493     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 494 }
 495
 496 set_safe(){
 497     var=$1
 498     shift
 499     eval $(sanitize_var_name "$var")='$*'
 500 }
 501
 502 get_safe(){
 503     eval echo \$$(sanitize_var_name "$1")
 504 }
 505
 506 pushvar(){
 507     for pvar in $*; do
 508         eval level=\${${pvar}_level:=0}
 509         eval ${pvar}_${level}="\$$pvar"
 510         eval ${pvar}_level=$(($level+1))
 511     done
 512 }
 513
 514 popvar(){
 515     for pvar in $*; do
 516         eval level=\${${pvar}_level:-0}
 517         test $level = 0 && continue
 518         eval level=$(($level-1))
 519         eval $pvar="\${${pvar}_${level}}"
 520         eval ${pvar}_level=$level
 521         eval unset ${pvar}_${level}
 522     done
 523 }
 524
 525 enable(){
 526     set_all yes $*
 527 }
 528
 529 disable(){
 530     set_all no $*
 531 }
 532
 533 enable_weak(){
 534     set_weak yes $*
 535 }
 536
 537 disable_weak(){
 538     set_weak no $*
 539 }
 540
 541 enable_safe(){
 542     for var; do
 543         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 544     done
 545 }
 546
 547 disable_safe(){
 548     for var; do
 549         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 550     done
 551 }
 552
 553 do_enable_deep(){
 554     for var; do
 555         enabled $var && continue
 556         eval sel="\$${var}_select"
 557         eval sgs="\$${var}_suggest"
 558         pushvar var sgs
 559         enable_deep $sel
 560         popvar sgs
 561         enable_deep_weak $sgs
 562         popvar var
 563     done
 564 }
 565
 566 enable_deep(){
 567     do_enable_deep $*
 568     enable $*
 569 }
 570
 571 enable_deep_weak(){
 572     for var; do
 573         disabled $var && continue
 574         pushvar var
 575         do_enable_deep $var
 576         popvar var
 577         enable_weak $var
 578     done
 579 }
 580
 581 enabled(){
 582     test "${1#!}" = "$1" && op== || op=!=
 583     eval test "x\$${1#!}" $op "xyes"
 584 }
 585
 586 disabled(){
 587     test "${1#!}" = "$1" && op== || op=!=
 588     eval test "x\$${1#!}" $op "xno"
 589 }
 590
 591 enabled_all(){
 592     for opt; do
 593         enabled $opt || return 1
 594     done
 595 }
 596
 597 disabled_all(){
 598     for opt; do
 599         disabled $opt || return 1
 600     done
 601 }
 602
 603 enabled_any(){
 604     for opt; do
 605         enabled $opt && return 0
 606     done
 607 }
 608
 609 disabled_any(){
 610     for opt; do
 611         disabled $opt && return 0
 612     done
 613     return 1
 614 }
 615
 616 set_default(){
 617     for opt; do
 618         eval : \${$opt:=\$${opt}_default}
 619     done
 620 }
 621
 622 is_in(){
 623     value=$1
 624     shift
 625     for var in $*; do
 626         [ $var = $value ] && return 0
 627     done
 628     return 1
 629 }
 630
 631 do_check_deps(){
 632     for cfg; do
 633         cfg="${cfg#!}"
 634         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 635         disabled ${cfg}_checking && continue
 636         enable ${cfg}_checking
 637         append allopts $cfg
 638
 639         eval dep_all="\$${cfg}_deps"
 640         eval dep_any="\$${cfg}_deps_any"
 641         eval dep_sel="\$${cfg}_select"
 642         eval dep_sgs="\$${cfg}_suggest"
 643         eval dep_ifa="\$${cfg}_if"
 644         eval dep_ifn="\$${cfg}_if_any"
 645
 646         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 647         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 648         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 649
 650         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 651         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 652         enabled_all  $dep_all || disable $cfg
 653         enabled_any  $dep_any || disable $cfg
 654         disabled_any $dep_sel && disable $cfg
 655
 656         if enabled $cfg; then
 657             enable_deep $dep_sel
 658             enable_deep_weak $dep_sgs
 659         fi
 660
 661         disable ${cfg}_checking
 662     done
 663 }
 664
 665 check_deps(){
 666     unset allopts
 667
 668     do_check_deps "$@"
 669
 670     for cfg in $allopts; do
 671         enabled $cfg || continue
 672         eval dep_extralibs="\$${cfg}_extralibs"
 673         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 674     done
 675 }
 676
 677 print_config(){
 678     pfx=$1
 679     files=$2
 680     shift 2
 681     map 'eval echo "$v \${$v:-no}"' "$@" |
 682     awk "BEGIN { split(\"$files\", files) }
 683         {
 684             c = \"$pfx\" toupper(\$1);
 685             v = \$2;
 686             sub(/yes/, 1, v);
 687             sub(/no/,  0, v);
 688             for (f in files) {
 689                 file = files[f];
 690                 if (file ~ /\\.h\$/) {
 691                     printf(\"#define %s %d\\n\", c, v) >>file;
 692                 } else if (file ~ /\\.asm\$/) {
 693                     printf(\"%%define %s %d\\n\", c, v) >>file;
 694                 } else if (file ~ /\\.mak\$/) {
 695                     n = -v ? \"\" : \"!\";
 696                     printf(\"%s%s=yes\\n\", n, c) >>file;
 697                 } else if (file ~ /\\.texi\$/) {
 698                     pre = -v ? \"\" : \"@c \";
 699                     yesno = \$2;
 700                     c2 = tolower(c);
 701                     gsub(/_/, \"-\", c2);
 702                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 703                 }
 704             }
 705         }"
 706 }
 707
 708 print_enabled(){
 709     suf=$1
 710     shift
 711     for v; do
 712         enabled $v && printf "%s\n" ${v%$suf};
 713     done
 714 }
 715
 716 append(){
 717     var=$1
 718     shift
 719     eval "$var=\"\$$var $*\""
 720 }
 721
 722 prepend(){
 723     var=$1
 724     shift
 725     eval "$var=\"$* \$$var\""
 726 }
 727
 728 add_cppflags(){
 729     append CPPFLAGS "$@"
 730 }
 731
 732 add_cflags(){
 733     append CFLAGS $($cflags_filter "$@")
 734 }
 735
 736 add_cxxflags(){
 737     append CXXFLAGS $($cflags_filter "$@")
 738 }
 739
 740 add_asflags(){
 741     append ASFLAGS $($asflags_filter "$@")
 742 }
 743
 744 add_ldflags(){
 745     append LDFLAGS $($ldflags_filter "$@")
 746 }
 747
 748 add_stripflags(){
 749     append ASMSTRIPFLAGS "$@"
 750 }
 751
 752 add_extralibs(){
 753     prepend extralibs $($ldflags_filter "$@")
 754 }
 755
 756 add_host_cppflags(){
 757     append host_cppflags "$@"
 758 }
 759
 760 add_host_cflags(){
 761     append host_cflags $($host_cflags_filter "$@")
 762 }
 763
 764 add_host_ldflags(){
 765     append host_ldflags $($host_ldflags_filter "$@")
 766 }
 767
 768 add_compat(){
 769     append compat_objs $1
 770     shift
 771     map 'add_cppflags -D$v' "$@"
 772 }
 773
 774 check_cmd(){
 775     log "$@"
 776     "$@" >> $logfile 2>&1
 777 }
 778
 779 cc_o(){
 780     eval printf '%s\\n' $CC_O
 781 }
 782
 783 cc_e(){
 784     eval printf '%s\\n' $CC_E
 785 }
 786
 787 check_cc(){
 788     log check_cc "$@"
 789     cat > $TMPC
 790     log_file $TMPC
 791     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 792 }
 793
 794 check_cxx(){
 795     log check_cxx "$@"
 796     cat > $TMPCPP
 797     log_file $TMPCPP
 798     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 799 }
 800
 801 check_cpp(){
 802     log check_cpp "$@"
 803     cat > $TMPC
 804     log_file $TMPC
 805     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 806 }
 807
 808 as_o(){
 809     eval printf '%s\\n' $AS_O
 810 }
 811
 812 check_as(){
 813     log check_as "$@"
 814     cat > $TMPS
 815     log_file $TMPS
 816     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 817 }
 818
 819 check_inline_asm(){
 820     log check_inline_asm "$@"
 821     name="$1"
 822     code="$2"
 823     shift 2
 824     disable $name
 825     check_cc "$@" <<EOF && enable $name
 826 void foo(void){ __asm__ volatile($code); }
 827 EOF
 828 }
 829
 830 check_insn(){
 831     log check_insn "$@"
 832     check_inline_asm ${1}_inline "\"$2\""
 833     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 834 }
 835
 836 check_yasm(){
 837     log check_yasm "$@"
 838     echo "$1" > $TMPS
 839     log_file $TMPS
 840     shift 1
 841     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 842 }
 843
 844 ld_o(){
 845     eval printf '%s\\n' $LD_O
 846 }
 847
 848 check_ld(){
 849     log check_ld "$@"
 850     type=$1
 851     shift 1
 852     flags=$(filter_out '-l*|*.so' $@)
 853     libs=$(filter '-l*|*.so' $@)
 854     check_$type $($cflags_filter $flags) || return
 855     flags=$($ldflags_filter $flags)
 856     libs=$($ldflags_filter $libs)
 857     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 858 }
 859
 860 print_include(){
 861     hdr=$1
 862     test "${hdr%.h}" = "${hdr}" &&
 863         echo "#include $hdr"    ||
 864         echo "#include <$hdr>"
 865 }
 866
 867 check_code(){
 868     log check_code "$@"
 869     check=$1
 870     headers=$2
 871     code=$3
 872     shift 3
 873     {
 874         for hdr in $headers; do
 875             print_include $hdr
 876         done
 877         echo "int main(void) { $code; return 0; }"
 878     } | check_$check "$@"
 879 }
 880
 881 check_cppflags(){
 882     log check_cppflags "$@"
 883     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 884 int x;
 885 EOF
 886 }
 887
 888 test_cflags(){
 889     log test_cflags "$@"
 890     set -- $($cflags_filter "$@")
 891     check_cc "$@" <<EOF
 892 int x;
 893 EOF
 894 }
 895
 896 check_cflags(){
 897     log check_cflags "$@"
 898     test_cflags "$@" && add_cflags "$@"
 899 }
 900
 901 check_cxxflags(){
 902     log check_cxxflags "$@"
 903     set -- $($cflags_filter "$@")
 904     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 905 int x;
 906 EOF
 907 }
 908
 909 test_ldflags(){
 910     log test_ldflags "$@"
 911     check_ld "cc" "$@" <<EOF
 912 int main(void){ return 0; }
 913 EOF
 914 }
 915
 916 check_ldflags(){
 917     log check_ldflags "$@"
 918     test_ldflags "$@" && add_ldflags "$@"
 919 }
 920
 921 test_stripflags(){
 922     log test_stripflags "$@"
 923     # call check_cc to get a fresh TMPO
 924     check_cc <<EOF
 925 int main(void) { return 0; }
 926 EOF
 927     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 928 }
 929
 930 check_stripflags(){
 931     log check_stripflags "$@"
 932     test_stripflags "$@" && add_stripflags "$@"
 933 }
 934
 935 check_header(){
 936     log check_header "$@"
 937     header=$1
 938     shift
 939     disable_safe $header
 940     check_cpp "$@" <<EOF && enable_safe $header
 941 #include <$header>
 942 int x;
 943 EOF
 944 }
 945
 946 check_func(){
 947     log check_func "$@"
 948     func=$1
 949     shift
 950     disable $func
 951     check_ld "cc" "$@" <<EOF && enable $func
 952 extern int $func();
 953 int main(void){ $func(); }
 954 EOF
 955 }
 956
 957 check_mathfunc(){
 958     log check_mathfunc "$@"
 959     func=$1
 960     narg=$2
 961     shift 2
 962     test $narg = 2 && args="f, g" || args="f"
 963     disable $func
 964     check_ld "cc" "$@" <<EOF && enable $func
 965 #include <math.h>
 966 float foo(float f, float g) { return $func($args); }
 967 int main(void){ return (int) foo; }
 968 EOF
 969 }
 970
 971 check_func_headers(){
 972     log check_func_headers "$@"
 973     headers=$1
 974     funcs=$2
 975     shift 2
 976     {
 977         for hdr in $headers; do
 978             print_include $hdr
 979         done
 980         for func in $funcs; do
 981             echo "long check_$func(void) { return (long) $func; }"
 982         done
 983         echo "int main(void) { return 0; }"
 984     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
 985 }
 986
 987 check_class_headers_cpp(){
 988     log check_class_headers_cpp "$@"
 989     headers=$1
 990     classes=$2
 991     shift 2
 992     {
 993         for hdr in $headers; do
 994             echo "#include <$hdr>"
 995         done
 996         echo "int main(void) { "
 997         i=1
 998         for class in $classes; do
 999             echo "$class obj$i;"
1000             i=$(expr $i + 1)
1001         done
1002         echo "return 0; }"
1003     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1004 }
1005
1006 check_cpp_condition(){
1007     log check_cpp_condition "$@"
1008     header=$1
1009     condition=$2
1010     shift 2
1011     check_cpp "$@" <<EOF
1012 #include <$header>
1013 #if !($condition)
1014 #error "unsatisfied condition: $condition"
1015 #endif
1016 EOF
1017 }
1018
1019 check_lib(){
1020     log check_lib "$@"
1021     header="$1"
1022     func="$2"
1023     shift 2
1024     check_header $header && check_func $func "$@" && add_extralibs "$@"
1025 }
1026
1027 check_lib2(){
1028     log check_lib2 "$@"
1029     headers="$1"
1030     funcs="$2"
1031     shift 2
1032     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1033 }
1034
1035 check_lib_cpp(){
1036     log check_lib_cpp "$@"
1037     headers="$1"
1038     classes="$2"
1039     shift 2
1040     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1041 }
1042
1043 check_pkg_config(){
1044     log check_pkg_config "$@"
1045     pkgandversion="$1"
1046     pkg="${1%% *}"
1047     headers="$2"
1048     funcs="$3"
1049     shift 3
1050     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1051     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1052     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1053     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1054         set_safe ${pkg}_cflags $pkg_cflags   &&
1055         set_safe ${pkg}_libs   $pkg_libs
1056 }
1057
1058 check_exec(){
1059     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1060 }
1061
1062 check_exec_crash(){
1063     code=$(cat)
1064
1065     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1066     # are safe but may not be available everywhere.  Thus we use
1067     # raise(SIGTERM) instead.  The check is run in a subshell so we
1068     # can redirect the "Terminated" message from the shell.  SIGBUS
1069     # is not defined by standard C so it is used conditionally.
1070
1071     (check_exec "$@") >> $logfile 2>&1 <<EOF
1072 #include <signal.h>
1073 static void sighandler(int sig){
1074     raise(SIGTERM);
1075 }
1076 int foo(void){
1077     $code
1078 }
1079 int (*func_ptr)(void) = foo;
1080 int main(void){
1081     signal(SIGILL, sighandler);
1082     signal(SIGFPE, sighandler);
1083     signal(SIGSEGV, sighandler);
1084 #ifdef SIGBUS
1085     signal(SIGBUS, sighandler);
1086 #endif
1087     return func_ptr();
1088 }
1089 EOF
1090 }
1091
1092 check_type(){
1093     log check_type "$@"
1094     headers=$1
1095     type=$2
1096     shift 2
1097     disable_safe "$type"
1098     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1099 }
1100
1101 check_struct(){
1102     log check_struct "$@"
1103     headers=$1
1104     struct=$2
1105     member=$3
1106     shift 3
1107     disable_safe "${struct}_${member}"
1108     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1109         enable_safe "${struct}_${member}"
1110 }
1111
1112 check_builtin(){
1113     log check_builtin "$@"
1114     name=$1
1115     headers=$2
1116     builtin=$3
1117     shift 3
1118     disable "$name"
1119     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1120 }
1121
1122 check_compile_assert(){
1123     log check_compile_assert "$@"
1124     name=$1
1125     headers=$2
1126     condition=$3
1127     shift 3
1128     disable "$name"
1129     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1130 }
1131
1132 require(){
1133     name="$1"
1134     header="$2"
1135     func="$3"
1136     shift 3
1137     check_lib $header $func "$@" || die "ERROR: $name not found"
1138 }
1139
1140 require2(){
1141     name="$1"
1142     headers="$2"
1143     func="$3"
1144     shift 3
1145     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1146 }
1147
1148 require_cpp(){
1149     name="$1"
1150     headers="$2"
1151     classes="$3"
1152     shift 3
1153     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1154 }
1155
1156 require_pkg_config(){
1157     pkg="$1"
1158     check_pkg_config "$@" || die "ERROR: $pkg not found"
1159     add_cflags    $(get_safe ${pkg}_cflags)
1160     add_extralibs $(get_safe ${pkg}_libs)
1161 }
1162
1163 require_libfreetype(){
1164     log require_libfreetype "$@"
1165     pkg="freetype2"
1166     check_cmd $pkg_config --exists --print-errors $pkg \
1167       || die "ERROR: $pkg not found"
1168     pkg_cflags=$($pkg_config --cflags $pkg)
1169     pkg_libs=$($pkg_config --libs $pkg)
1170     {
1171         echo "#include <ft2build.h>"
1172         echo "#include FT_FREETYPE_H"
1173         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1174         echo "int main(void) { return 0; }"
1175     } | check_ld "cc" $pkg_cflags $pkg_libs \
1176       && set_safe ${pkg}_cflags $pkg_cflags \
1177       && set_safe ${pkg}_libs   $pkg_libs \
1178       || die "ERROR: $pkg not found"
1179     add_cflags    $(get_safe ${pkg}_cflags)
1180     add_extralibs $(get_safe ${pkg}_libs)
1181 }
1182
1183 hostcc_e(){
1184     eval printf '%s\\n' $HOSTCC_E
1185 }
1186
1187 hostcc_o(){
1188     eval printf '%s\\n' $HOSTCC_O
1189 }
1190
1191 check_host_cc(){
1192     log check_host_cc "$@"
1193     cat > $TMPC
1194     log_file $TMPC
1195     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1196 }
1197
1198 check_host_cpp(){
1199     log check_host_cpp "$@"
1200     cat > $TMPC
1201     log_file $TMPC
1202     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1203 }
1204
1205 check_host_cppflags(){
1206     log check_host_cppflags "$@"
1207     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1208 int x;
1209 EOF
1210 }
1211
1212 check_host_cflags(){
1213     log check_host_cflags "$@"
1214     set -- $($host_cflags_filter "$@")
1215     check_host_cc "$@" <<EOF && append host_cflags "$@"
1216 int x;
1217 EOF
1218 }
1219
1220 check_host_cpp_condition(){
1221     log check_host_cpp_condition "$@"
1222     header=$1
1223     condition=$2
1224     shift 2
1225     check_host_cpp "$@" <<EOF
1226 #include <$header>
1227 #if !($condition)
1228 #error "unsatisfied condition: $condition"
1229 #endif
1230 EOF
1231 }
1232
1233 apply(){
1234     file=$1
1235     shift
1236     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1237 }
1238
1239 cp_if_changed(){
1240     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1241     mkdir -p "$(dirname $2)"
1242     $cp_f "$1" "$2"
1243 }
1244
1245 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1246 # system-dependent things.
1247
1248 COMPONENT_LIST="
1249     bsfs
1250     decoders
1251     demuxers
1252     encoders
1253     filters
1254     hwaccels
1255     indevs
1256     muxers
1257     outdevs
1258     parsers
1259     protocols
1260 "
1261
1262 EXAMPLE_LIST="
1263     avio_reading_example
1264     avcodec_example
1265     demuxing_decoding_example
1266     filter_audio_example
1267     filtering_audio_example
1268     filtering_video_example
1269     metadata_example
1270     muxing_example
1271     remuxing_example
1272     resampling_audio_example
1273     scaling_video_example
1274     transcode_aac_example
1275     transcoding_example
1276 "
1277
1278 EXTERNAL_LIBRARY_LIST="
1279     avisynth
1280     bzlib
1281     crystalhd
1282     decklink
1283     fontconfig
1284     frei0r
1285     gnutls
1286     iconv
1287     ladspa
1288     libaacplus
1289     libass
1290     libbluray
1291     libcaca
1292     libcdio
1293     libcelt
1294     libdc1394
1295     libfaac
1296     libfdk_aac
1297     libflite
1298     libfreetype
1299     libgme
1300     libgsm
1301     libiec61883
1302     libilbc
1303     libmodplug
1304     libmp3lame
1305     libnut
1306     libopencore_amrnb
1307     libopencore_amrwb
1308     libopencv
1309     libopenjpeg
1310     libopus
1311     libpulse
1312     libquvi
1313     librtmp
1314     libschroedinger
1315     libshine
1316     libsoxr
1317     libspeex
1318     libssh
1319     libstagefright_h264
1320     libtheora
1321     libtwolame
1322     libutvideo
1323     libv4l2
1324     libvidstab
1325     libvo_aacenc
1326     libvo_amrwbenc
1327     libvorbis
1328     libvpx
1329     libwavpack
1330     libwebp
1331     libx264
1332     libx265
1333     libxavs
1334     libxvid
1335     libzmq
1336     libzvbi
1337     openal
1338     opencl
1339     opengl
1340     openssl
1341     x11grab
1342     xlib
1343     zlib
1344 "
1345
1346 DOCUMENT_LIST="
1347     doc
1348     htmlpages
1349     manpages
1350     podpages
1351     txtpages
1352 "
1353
1354 FEATURE_LIST="
1355     ftrapv
1356     gray
1357     hardcoded_tables
1358     runtime_cpudetect
1359     safe_bitstream_reader
1360     shared
1361     small
1362     sram
1363     static
1364     swscale_alpha
1365 "
1366
1367 HWACCEL_LIST="
1368     dxva2
1369     vaapi
1370     vda
1371     vdpau
1372     xvmc
1373 "
1374
1375 LIBRARY_LIST="
1376     avcodec
1377     avdevice
1378     avfilter
1379     avformat
1380     avresample
1381     avutil
1382     postproc
1383     swresample
1384     swscale
1385 "
1386
1387 LICENSE_LIST="
1388     gpl
1389     nonfree
1390     version3
1391 "
1392
1393 PROGRAM_LIST="
1394     ffplay
1395     ffprobe
1396     ffserver
1397     ffmpeg
1398 "
1399
1400 SUBSYSTEM_LIST="
1401     dct
1402     dwt
1403     error_resilience
1404     fast_unaligned
1405     fft
1406     lsp
1407     lzo
1408     mdct
1409     network
1410     rdft
1411 "
1412
1413 CONFIG_LIST="
1414     $COMPONENT_LIST
1415     $DOCUMENT_LIST
1416     $EXAMPLE_LIST
1417     $EXTERNAL_LIBRARY_LIST
1418     $FEATURE_LIST
1419     $HWACCEL_LIST
1420     $LICENSE_LIST
1421     $LIBRARY_LIST
1422     $PROGRAM_LIST
1423     $SUBSYSTEM_LIST
1424     incompatible_libav_abi
1425     incompatible_fork_abi
1426     memalign_hack
1427     memory_poisoning
1428     neon_clobber_test
1429     pic
1430     pod2man
1431     raise_major
1432     thumb
1433     xmm_clobber_test
1434 "
1435
1436 THREADS_LIST="
1437     pthreads
1438     os2threads
1439     w32threads
1440 "
1441
1442 ATOMICS_LIST="
1443     atomics_gcc
1444     atomics_suncc
1445     atomics_win32
1446 "
1447
1448 ARCH_LIST="
1449     aarch64
1450     alpha
1451     arm
1452     avr32
1453     avr32_ap
1454     avr32_uc
1455     bfin
1456     ia64
1457     m68k
1458     mips
1459     mips64
1460     parisc
1461     ppc
1462     ppc64
1463     s390
1464     sh4
1465     sparc
1466     sparc64
1467     tilegx
1468     tilepro
1469     tomi
1470     x86
1471     x86_32
1472     x86_64
1473 "
1474
1475 ARCH_EXT_LIST_ARM="
1476     armv5te
1477     armv6
1478     armv6t2
1479     neon
1480     vfp
1481     vfpv3
1482 "
1483
1484 ARCH_EXT_LIST_MIPS="
1485     mipsfpu
1486     mips32r2
1487     mipsdspr1
1488     mipsdspr2
1489 "
1490
1491 ARCH_EXT_LIST_X86_SIMD="
1492     amd3dnow
1493     amd3dnowext
1494     avx
1495     avx2
1496     fma3
1497     fma4
1498     mmx
1499     mmxext
1500     sse
1501     sse2
1502     sse3
1503     sse4
1504     sse42
1505     ssse3
1506     xop
1507 "
1508
1509 ARCH_EXT_LIST_PPC="
1510     altivec
1511     dcbzl
1512     ldbrx
1513     ppc4xx
1514 "
1515
1516 ARCH_EXT_LIST_X86="
1517     $ARCH_EXT_LIST_X86_SIMD
1518     cpunop
1519     i686
1520 "
1521
1522 ARCH_EXT_LIST="
1523     $ARCH_EXT_LIST_ARM
1524     $ARCH_EXT_LIST_PPC
1525     $ARCH_EXT_LIST_X86
1526     $ARCH_EXT_LIST_MIPS
1527     loongson
1528 "
1529
1530 ARCH_FEATURES="
1531     aligned_stack
1532     fast_64bit
1533     fast_clz
1534     fast_cmov
1535     local_aligned_8
1536     local_aligned_16
1537 "
1538
1539 BUILTIN_LIST="
1540     atomic_cas_ptr
1541     machine_rw_barrier
1542     MemoryBarrier
1543     mm_empty
1544     rdtsc
1545     sarestart
1546     sync_val_compare_and_swap
1547 "
1548 HAVE_LIST_CMDLINE="
1549     inline_asm
1550     symver
1551     yasm
1552 "
1553
1554 HAVE_LIST_PUB="
1555     bigendian
1556     fast_unaligned
1557     incompatible_libav_abi
1558     incompatible_fork_abi
1559 "
1560
1561 HEADERS_LIST="
1562     alsa_asoundlib_h
1563     altivec_h
1564     arpa_inet_h
1565     asm_types_h
1566     cdio_paranoia_h
1567     cdio_paranoia_paranoia_h
1568     CL_cl_h
1569     dev_bktr_ioctl_bt848_h
1570     dev_bktr_ioctl_meteor_h
1571     dev_ic_bt8xx_h
1572     dev_video_bktr_ioctl_bt848_h
1573     dev_video_meteor_ioctl_meteor_h
1574     direct_h
1575     dlfcn_h
1576     dxva_h
1577     ES2_gl_h
1578     gsm_h
1579     io_h
1580     mach_mach_time_h
1581     machine_ioctl_bt848_h
1582     machine_ioctl_meteor_h
1583     malloc_h
1584     openjpeg_1_5_openjpeg_h
1585     OpenGL_gl3_h
1586     poll_h
1587     sndio_h
1588     soundcard_h
1589     sys_mman_h
1590     sys_param_h
1591     sys_resource_h
1592     sys_select_h
1593     sys_soundcard_h
1594     sys_time_h
1595     sys_un_h
1596     sys_videoio_h
1597     termios_h
1598     unistd_h
1599     windows_h
1600     winsock2_h
1601 "
1602
1603 MATH_FUNCS="
1604     atanf
1605     atan2f
1606     cbrt
1607     cbrtf
1608     cosf
1609     exp2
1610     exp2f
1611     expf
1612     isinf
1613     isnan
1614     ldexpf
1615     llrint
1616     llrintf
1617     log2
1618     log2f
1619     log10f
1620     lrint
1621     lrintf
1622     powf
1623     rint
1624     round
1625     roundf
1626     sinf
1627     trunc
1628     truncf
1629 "
1630
1631 SYSTEM_FUNCS="
1632     access
1633     aligned_malloc
1634     clock_gettime
1635     closesocket
1636     CommandLineToArgvW
1637     CryptGenRandom
1638     dlopen
1639     fcntl
1640     flt_lim
1641     fork
1642     getaddrinfo
1643     gethrtime
1644     getopt
1645     GetProcessAffinityMask
1646     GetProcessMemoryInfo
1647     GetProcessTimes
1648     getrusage
1649     getservbyport
1650     GetSystemTimeAsFileTime
1651     gettimeofday
1652     glob
1653     glXGetProcAddress
1654     inet_aton
1655     isatty
1656     jack_port_get_latency_range
1657     kbhit
1658     localtime_r
1659     lzo1x_999_compress
1660     mach_absolute_time
1661     MapViewOfFile
1662     memalign
1663     mkstemp
1664     mmap
1665     mprotect
1666     nanosleep
1667     PeekNamedPipe
1668     posix_memalign
1669     pthread_cancel
1670     sched_getaffinity
1671     SetConsoleTextAttribute
1672     setmode
1673     setrlimit
1674     Sleep
1675     strerror_r
1676     sysconf
1677     sysctl
1678     usleep
1679     VirtualAlloc
1680     wglGetProcAddress
1681 "
1682
1683 TOOLCHAIN_FEATURES="
1684     asm_mod_q
1685     attribute_may_alias
1686     attribute_packed
1687     ebp_available
1688     ebx_available
1689     gnu_as
1690     gnu_windres
1691     ibm_asm
1692     inline_asm_labels
1693     inline_asm_nonlocal_labels
1694     inline_asm_direct_symbol_refs
1695     pragma_deprecated
1696     rsync_contimeout
1697     symver_asm_label
1698     symver_gnu_asm
1699     vfp_args
1700     xform_asm
1701     xmm_clobbers
1702 "
1703
1704 TYPES_LIST="
1705     socklen_t
1706     struct_addrinfo
1707     struct_group_source_req
1708     struct_ip_mreq_source
1709     struct_ipv6_mreq
1710     struct_pollfd
1711     struct_rusage_ru_maxrss
1712     struct_sctp_event_subscribe
1713     struct_sockaddr_in6
1714     struct_sockaddr_sa_len
1715     struct_sockaddr_storage
1716     struct_stat_st_mtim_tv_nsec
1717     struct_v4l2_frmivalenum_discrete
1718 "
1719
1720 HAVE_LIST="
1721     $ARCH_EXT_LIST
1722     $(add_suffix _external $ARCH_EXT_LIST)
1723     $(add_suffix _inline   $ARCH_EXT_LIST)
1724     $ARCH_FEATURES
1725     $ATOMICS_LIST
1726     $BUILTIN_LIST
1727     $HAVE_LIST_CMDLINE
1728     $HAVE_LIST_PUB
1729     $HEADERS_LIST
1730     $MATH_FUNCS
1731     $SYSTEM_FUNCS
1732     $THREADS_LIST
1733     $TOOLCHAIN_FEATURES
1734     $TYPES_LIST
1735     atomics_native
1736     dos_paths
1737     libc_msvcrt
1738     libdc1394_1
1739     libdc1394_2
1740     makeinfo
1741     perl
1742     pod2man
1743     sdl
1744     texi2html
1745     threads
1746     vdpau_x11
1747     xlib
1748 "
1749
1750 # options emitted with CONFIG_ prefix but not available on the command line
1751 CONFIG_EXTRA="
1752     aandcttables
1753     ac3dsp
1754     audio_frame_queue
1755     dsputil
1756     exif
1757     frame_thread_encoder
1758     gcrypt
1759     golomb
1760     gplv3
1761     h263dsp
1762     h264chroma
1763     h264dsp
1764     h264pred
1765     h264qpel
1766     hpeldsp
1767     huffman
1768     intrax8
1769     lgplv3
1770     llviddsp
1771     lpc
1772     mpegaudio
1773     mpegaudiodsp
1774     mpegvideo
1775     mpegvideoenc
1776     nettle
1777     rangecoder
1778     riffdec
1779     riffenc
1780     rtpdec
1781     rtpenc_chain
1782     sinewin
1783     tpeldsp
1784     videodsp
1785     vp3dsp
1786 "
1787
1788 CMDLINE_SELECT="
1789     $ARCH_EXT_LIST
1790     $CONFIG_LIST
1791     $HAVE_LIST_CMDLINE
1792     $THREADS_LIST
1793     asm
1794     cross_compile
1795     debug
1796     extra_warnings
1797     logging
1798     lto
1799     optimizations
1800     rpath
1801     stripping
1802 "
1803
1804 PATHS_LIST="
1805     bindir
1806     datadir
1807     docdir
1808     incdir
1809     libdir
1810     mandir
1811     prefix
1812     shlibdir
1813 "
1814
1815 CMDLINE_SET="
1816     $PATHS_LIST
1817     ar
1818     arch
1819     as
1820     assert_level
1821     build_suffix
1822     cc
1823     cpu
1824     cross_prefix
1825     cxx
1826     dep_cc
1827     extra_version
1828     host_cc
1829     host_cflags
1830     host_ld
1831     host_ldflags
1832     host_libs
1833     host_os
1834     install
1835     ld
1836     logfile
1837     malloc_prefix
1838     nm
1839     optflags
1840     pkg_config
1841     pkg_config_flags
1842     progs_suffix
1843     random_seed
1844     samples
1845     strip
1846     sysinclude
1847     sysroot
1848     target_exec
1849     target_os
1850     target_path
1851     target_samples
1852     tempprefix
1853     toolchain
1854     valgrind
1855     yasmexe
1856 "
1857
1858 CMDLINE_APPEND="
1859     extra_cflags
1860     extra_cxxflags
1861     host_cppflags
1862 "
1863
1864 # code dependency declarations
1865
1866 # architecture extensions
1867
1868 armv5te_deps="arm"
1869 armv6_deps="arm"
1870 armv6t2_deps="arm"
1871 neon_deps_any="aarch64 arm"
1872 vfp_deps_any="aarch64 arm"
1873 vfpv3_deps="vfp"
1874
1875 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1876
1877 mipsfpu_deps="mips"
1878 mips32r2_deps="mips"
1879 mipsdspr1_deps="mips"
1880 mipsdspr2_deps="mips"
1881
1882 altivec_deps="ppc"
1883 ppc4xx_deps="ppc"
1884
1885 cpunop_deps="i686"
1886 x86_64_select="i686"
1887 x86_64_suggest="fast_cmov"
1888
1889 amd3dnow_deps="mmx"
1890 amd3dnowext_deps="amd3dnow"
1891 i686_deps="x86"
1892 mmx_deps="x86"
1893 mmxext_deps="mmx"
1894 sse_deps="mmxext"
1895 sse2_deps="sse"
1896 sse3_deps="sse2"
1897 ssse3_deps="sse3"
1898 sse4_deps="ssse3"
1899 sse42_deps="sse4"
1900 avx_deps="sse42"
1901 xop_deps="avx"
1902 fma3_deps="avx"
1903 fma4_deps="avx"
1904 avx2_deps="avx"
1905
1906 mmx_external_deps="yasm"
1907 mmx_inline_deps="inline_asm"
1908 mmx_suggest="mmx_external mmx_inline"
1909
1910 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1911     eval dep=\$${ext}_deps
1912     eval ${ext}_external_deps='"${dep}_external"'
1913     eval ${ext}_inline_deps='"${dep}_inline"'
1914     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1915 done
1916
1917 aligned_stack_if_any="aarch64 ppc x86"
1918 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1919 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1920 fast_unaligned_if_any="aarch64 ppc x86"
1921
1922 need_memalign="altivec neon sse"
1923
1924 # system capabilities
1925 log2_deps="!libc_msvcrt"
1926
1927 symver_if_any="symver_asm_label symver_gnu_asm"
1928
1929 # threading support
1930 atomics_gcc_if="sync_val_compare_and_swap"
1931 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1932 atomics_win32_if="MemoryBarrier"
1933 atomics_native_if_any="$ATOMICS_LIST"
1934 w32threads_deps="atomics_native"
1935 threads_if_any="$THREADS_LIST"
1936
1937 # subsystems
1938 dct_select="rdft"
1939 error_resilience_select="dsputil"
1940 frame_thread_encoder_deps="encoders threads"
1941 mdct_select="fft"
1942 rdft_select="fft"
1943 mpegaudio_select="mpegaudiodsp"
1944 mpegaudiodsp_select="dct"
1945 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1946 mpegvideoenc_select="dsputil mpegvideo"
1947
1948 # decoders / encoders
1949 aac_decoder_select="mdct sinewin"
1950 aac_encoder_select="audio_frame_queue mdct sinewin"
1951 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1952 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1953 ac3_encoder_select="mdct ac3dsp dsputil"
1954 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1955 aic_decoder_select="dsputil golomb"
1956 alac_encoder_select="lpc"
1957 als_decoder_select="dsputil"
1958 amrnb_decoder_select="lsp"
1959 amrwb_decoder_select="lsp"
1960 amv_decoder_select="sp5x_decoder exif"
1961 amv_encoder_select="aandcttables"
1962 ape_decoder_select="dsputil"
1963 asv1_decoder_select="dsputil"
1964 asv1_encoder_select="dsputil"
1965 asv2_decoder_select="dsputil"
1966 asv2_encoder_select="dsputil"
1967 atrac1_decoder_select="mdct sinewin"
1968 atrac3_decoder_select="mdct"
1969 atrac3p_decoder_select="mdct sinewin"
1970 avrn_decoder_select="exif"
1971 bink_decoder_select="dsputil hpeldsp"
1972 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1973 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1974 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1975 cllc_decoder_select="dsputil"
1976 comfortnoise_encoder_select="lpc"
1977 cook_decoder_select="dsputil mdct sinewin"
1978 cscd_decoder_select="lzo"
1979 cscd_decoder_suggest="zlib"
1980 dca_decoder_select="mdct"
1981 dirac_decoder_select="dsputil dwt golomb videodsp"
1982 dnxhd_decoder_select="dsputil"
1983 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1984 dvvideo_decoder_select="dsputil"
1985 dvvideo_encoder_select="dsputil"
1986 dxa_decoder_select="zlib"
1987 eac3_decoder_select="ac3_decoder"
1988 eac3_encoder_select="ac3_encoder"
1989 eamad_decoder_select="aandcttables dsputil mpegvideo"
1990 eatgq_decoder_select="aandcttables"
1991 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
1992 exr_decoder_select="zlib"
1993 ffv1_decoder_select="golomb rangecoder"
1994 ffv1_encoder_select="rangecoder"
1995 ffvhuff_decoder_select="huffyuv_decoder"
1996 ffvhuff_encoder_select="huffyuv_encoder"
1997 fic_decoder_select="dsputil golomb"
1998 flac_decoder_select="golomb"
1999 flac_encoder_select="dsputil golomb lpc"
2000 flashsv_decoder_select="zlib"
2001 flashsv_encoder_select="zlib"
2002 flashsv2_encoder_select="zlib"
2003 flashsv2_decoder_select="zlib"
2004 flv_decoder_select="h263_decoder"
2005 flv_encoder_select="h263_encoder"
2006 fourxm_decoder_select="dsputil"
2007 fraps_decoder_select="dsputil huffman"
2008 g2m_decoder_select="dsputil zlib"
2009 g729_decoder_select="dsputil"
2010 h261_decoder_select="error_resilience mpegvideo"
2011 h261_encoder_select="aandcttables mpegvideoenc"
2012 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
2013 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2014 h263i_decoder_select="h263_decoder"
2015 h263p_encoder_select="h263_encoder"
2016 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
2017 h264_decoder_suggest="error_resilience"
2018 hevc_decoder_select="dsputil golomb videodsp"
2019 huffyuv_decoder_select="dsputil llviddsp"
2020 huffyuv_encoder_select="dsputil huffman llviddsp"
2021 iac_decoder_select="imc_decoder"
2022 imc_decoder_select="dsputil fft mdct sinewin"
2023 indeo3_decoder_select="hpeldsp"
2024 interplay_video_decoder_select="hpeldsp"
2025 jpegls_decoder_select="golomb mjpeg_decoder"
2026 jpegls_encoder_select="golomb"
2027 jv_decoder_select="dsputil"
2028 lagarith_decoder_select="dsputil"
2029 ljpeg_encoder_select="aandcttables mpegvideoenc"
2030 loco_decoder_select="golomb"
2031 mdec_decoder_select="dsputil error_resilience mpegvideo"
2032 metasound_decoder_select="lsp mdct sinewin"
2033 mimic_decoder_select="dsputil hpeldsp"
2034 mjpeg_decoder_select="dsputil hpeldsp exif"
2035 mjpeg_encoder_select="aandcttables mpegvideoenc"
2036 mjpegb_decoder_select="mjpeg_decoder"
2037 mlp_decoder_select="mlp_parser"
2038 motionpixels_decoder_select="dsputil"
2039 mp1_decoder_select="mpegaudio"
2040 mp1float_decoder_select="mpegaudio"
2041 mp2_decoder_select="mpegaudio"
2042 mp2float_decoder_select="mpegaudio"
2043 mp3_decoder_select="mpegaudio"
2044 mp3adu_decoder_select="mpegaudio"
2045 mp3adufloat_decoder_select="mpegaudio"
2046 mp3float_decoder_select="mpegaudio"
2047 mp3on4_decoder_select="mpegaudio"
2048 mp3on4float_decoder_select="mpegaudio"
2049 mpc7_decoder_select="dsputil mpegaudiodsp"
2050 mpc8_decoder_select="mpegaudiodsp"
2051 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2052 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2053 mpeg1video_decoder_select="error_resilience mpegvideo"
2054 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2055 mpeg2video_decoder_select="error_resilience mpegvideo"
2056 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2057 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2058 mpeg4_encoder_select="h263_encoder"
2059 msmpeg4v1_decoder_select="h263_decoder"
2060 msmpeg4v2_decoder_select="h263_decoder"
2061 msmpeg4v2_encoder_select="h263_encoder"
2062 msmpeg4v3_decoder_select="h263_decoder"
2063 msmpeg4v3_encoder_select="h263_encoder"
2064 mss2_decoder_select="error_resilience vc1_decoder"
2065 mxpeg_decoder_select="mjpeg_decoder"
2066 nellymoser_decoder_select="mdct sinewin"
2067 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2068 nuv_decoder_select="dsputil lzo"
2069 png_decoder_select="zlib"
2070 png_encoder_select="dsputil zlib"
2071 prores_decoder_select="dsputil"
2072 prores_encoder_select="dsputil"
2073 qcelp_decoder_select="lsp"
2074 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2075 ra_144_encoder_select="audio_frame_queue lpc"
2076 ralf_decoder_select="golomb"
2077 rtjpeg_decoder_select="dsputil"
2078 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2079 rv10_encoder_select="h263_encoder"
2080 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2081 rv20_encoder_select="h263_encoder"
2082 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2083 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2084 shorten_decoder_select="golomb"
2085 sipr_decoder_select="lsp"
2086 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2087 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2088 sonic_decoder_select="golomb rangecoder"
2089 sonic_encoder_select="golomb rangecoder"
2090 sonic_ls_encoder_select="golomb"
2091 sp5x_decoder_select="mjpeg_decoder"
2092 svq1_decoder_select="hpeldsp"
2093 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2094 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2095 svq3_decoder_suggest="zlib"
2096 tak_decoder_select="dsputil"
2097 theora_decoder_select="vp3_decoder"
2098 thp_decoder_select="mjpeg_decoder"
2099 tiff_decoder_suggest="zlib"
2100 tiff_encoder_suggest="zlib"
2101 truehd_decoder_select="mlp_parser"
2102 truemotion2_decoder_select="dsputil"
2103 truespeech_decoder_select="dsputil"
2104 tscc_decoder_select="zlib"
2105 twinvq_decoder_select="mdct lsp sinewin"
2106 utvideo_decoder_select="dsputil"
2107 utvideo_encoder_select="dsputil huffman"
2108 vble_decoder_select="dsputil"
2109 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2110 vc1image_decoder_select="vc1_decoder"
2111 vorbis_decoder_select="mdct"
2112 vorbis_encoder_select="mdct"
2113 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2114 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2115 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2116 vp6a_decoder_select="vp6_decoder"
2117 vp6f_decoder_select="vp6_decoder"
2118 vp8_decoder_select="h264pred videodsp"
2119 vp9_decoder_select="videodsp"
2120 webp_decoder_select="vp8_decoder"
2121 wmapro_decoder_select="mdct sinewin"
2122 wmav1_decoder_select="mdct sinewin"
2123 wmav1_encoder_select="mdct sinewin"
2124 wmav2_decoder_select="mdct sinewin"
2125 wmav2_encoder_select="mdct sinewin"
2126 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2127 wmv1_decoder_select="h263_decoder"
2128 wmv1_encoder_select="h263_encoder"
2129 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2130 wmv2_encoder_select="h263_encoder"
2131 wmv3_decoder_select="vc1_decoder"
2132 wmv3image_decoder_select="wmv3_decoder"
2133 zerocodec_decoder_select="zlib"
2134 zlib_decoder_select="zlib"
2135 zlib_encoder_select="zlib"
2136 zmbv_decoder_select="zlib"
2137 zmbv_encoder_select="zlib"
2138
2139 # hardware accelerators
2140 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2141 dxva2_deps="dxva2api_h"
2142 vaapi_deps="va_va_h"
2143 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2144 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2145 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2146 xvmc_deps="X11_extensions_XvMClib_h"
2147
2148 h263_vaapi_hwaccel_deps="vaapi"
2149 h263_vaapi_hwaccel_select="h263_decoder"
2150 h263_vdpau_hwaccel_deps="vdpau"
2151 h263_vdpau_hwaccel_select="h263_decoder"
2152 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2153 h264_dxva2_hwaccel_deps="dxva2"
2154 h264_dxva2_hwaccel_select="h264_decoder"
2155 h264_vaapi_hwaccel_deps="vaapi"
2156 h264_vaapi_hwaccel_select="h264_decoder"
2157 h264_vda_decoder_deps="vda"
2158 h264_vda_decoder_select="h264_decoder"
2159 h264_vda_hwaccel_deps="vda"
2160 h264_vda_hwaccel_select="h264_decoder"
2161 h264_vdpau_decoder_deps="vdpau"
2162 h264_vdpau_decoder_select="h264_decoder"
2163 h264_vdpau_hwaccel_deps="vdpau"
2164 h264_vdpau_hwaccel_select="h264_decoder"
2165 mpeg_vdpau_decoder_deps="vdpau"
2166 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2167 mpeg_xvmc_hwaccel_deps="xvmc"
2168 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2169 mpeg1_vdpau_decoder_deps="vdpau"
2170 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2171 mpeg1_vdpau_hwaccel_deps="vdpau"
2172 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2173 mpeg1_xvmc_hwaccel_deps="xvmc"
2174 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2175 mpeg2_crystalhd_decoder_select="crystalhd"
2176 mpeg2_dxva2_hwaccel_deps="dxva2"
2177 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2178 mpeg2_vaapi_hwaccel_deps="vaapi"
2179 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2180 mpeg2_vdpau_hwaccel_deps="vdpau"
2181 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2182 mpeg2_xvmc_hwaccel_deps="xvmc"
2183 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2184 mpeg4_crystalhd_decoder_select="crystalhd"
2185 mpeg4_vaapi_hwaccel_deps="vaapi"
2186 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2187 mpeg4_vdpau_decoder_deps="vdpau"
2188 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2189 mpeg4_vdpau_hwaccel_deps="vdpau"
2190 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2191 msmpeg4_crystalhd_decoder_select="crystalhd"
2192 vc1_crystalhd_decoder_select="crystalhd"
2193 vc1_dxva2_hwaccel_deps="dxva2"
2194 vc1_dxva2_hwaccel_select="vc1_decoder"
2195 vc1_vaapi_hwaccel_deps="vaapi"
2196 vc1_vaapi_hwaccel_select="vc1_decoder"
2197 vc1_vdpau_decoder_deps="vdpau"
2198 vc1_vdpau_decoder_select="vc1_decoder"
2199 vc1_vdpau_hwaccel_deps="vdpau"
2200 vc1_vdpau_hwaccel_select="vc1_decoder"
2201 wmv3_crystalhd_decoder_select="crystalhd"
2202 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2203 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2204 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2205 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2206
2207 # parsers
2208 h264_parser_select="h264_decoder"
2209 hevc_parser_select="hevc_decoder"
2210 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2211 mpegvideo_parser_select="error_resilience mpegvideo"
2212 vc1_parser_select="mpegvideo"
2213
2214 # external libraries
2215 libaacplus_encoder_deps="libaacplus"
2216 libcelt_decoder_deps="libcelt"
2217 libfaac_encoder_deps="libfaac"
2218 libfaac_encoder_select="audio_frame_queue"
2219 libfdk_aac_decoder_deps="libfdk_aac"
2220 libfdk_aac_encoder_deps="libfdk_aac"
2221 libfdk_aac_encoder_select="audio_frame_queue"
2222 libgme_demuxer_deps="libgme"
2223 libgsm_decoder_deps="libgsm"
2224 libgsm_encoder_deps="libgsm"
2225 libgsm_ms_decoder_deps="libgsm"
2226 libgsm_ms_encoder_deps="libgsm"
2227 libilbc_decoder_deps="libilbc"
2228 libilbc_encoder_deps="libilbc"
2229 libmodplug_demuxer_deps="libmodplug"
2230 libmp3lame_encoder_deps="libmp3lame"
2231 libmp3lame_encoder_select="audio_frame_queue"
2232 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2233 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2234 libopencore_amrnb_encoder_select="audio_frame_queue"
2235 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2236 libopenjpeg_decoder_deps="libopenjpeg"
2237 libopenjpeg_encoder_deps="libopenjpeg"
2238 libopus_decoder_deps="libopus"
2239 libopus_encoder_deps="libopus"
2240 libopus_encoder_select="audio_frame_queue"
2241 libquvi_demuxer_deps="libquvi"
2242 libschroedinger_decoder_deps="libschroedinger"
2243 libschroedinger_encoder_deps="libschroedinger"
2244 libshine_encoder_deps="libshine"
2245 libshine_encoder_select="audio_frame_queue"
2246 libspeex_decoder_deps="libspeex"
2247 libspeex_encoder_deps="libspeex"
2248 libspeex_encoder_select="audio_frame_queue"
2249 libstagefright_h264_decoder_deps="libstagefright_h264"
2250 libtheora_encoder_deps="libtheora"
2251 libtwolame_encoder_deps="libtwolame"
2252 libvo_aacenc_encoder_deps="libvo_aacenc"
2253 libvo_aacenc_encoder_select="audio_frame_queue"
2254 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2255 libvorbis_decoder_deps="libvorbis"
2256 libvorbis_encoder_deps="libvorbis"
2257 libvorbis_encoder_select="audio_frame_queue"
2258 libvpx_vp8_decoder_deps="libvpx"
2259 libvpx_vp8_encoder_deps="libvpx"
2260 libvpx_vp9_decoder_deps="libvpx"
2261 libvpx_vp9_encoder_deps="libvpx"
2262 libwavpack_encoder_deps="libwavpack"
2263 libwebp_encoder_deps="libwebp"
2264 libx264_encoder_deps="libx264"
2265 libx264rgb_encoder_deps="libx264"
2266 libx265_encoder_deps="libx265"
2267 libxavs_encoder_deps="libxavs"
2268 libxvid_encoder_deps="libxvid"
2269 libutvideo_decoder_deps="libutvideo"
2270 libutvideo_encoder_deps="libutvideo"
2271 libzvbi_teletext_decoder_deps="libzvbi"
2272
2273 # demuxers / muxers
2274 ac3_demuxer_select="ac3_parser"
2275 asf_demuxer_select="riffdec"
2276 asf_muxer_select="riffenc"
2277 asf_stream_muxer_select="asf_muxer"
2278 avi_demuxer_select="riffdec"
2279 avi_muxer_select="riffenc"
2280 avisynth_demuxer_deps="avisynth"
2281 avisynth_demuxer_select="riffdec"
2282 caf_demuxer_select="riffdec"
2283 dirac_demuxer_select="dirac_parser"
2284 dts_demuxer_select="dca_parser"
2285 dtshd_demuxer_select="dca_parser"
2286 dxa_demuxer_select="riffdec"
2287 eac3_demuxer_select="ac3_parser"
2288 f4v_muxer_select="mov_muxer"
2289 flac_demuxer_select="flac_parser"
2290 hds_muxer_select="flv_muxer"
2291 hls_muxer_select="mpegts_muxer"
2292 ipod_muxer_select="mov_muxer"
2293 ismv_muxer_select="mov_muxer"
2294 libnut_demuxer_deps="libnut"
2295 libnut_muxer_deps="libnut"
2296 matroska_audio_muxer_select="matroska_muxer"
2297 matroska_demuxer_select="riffdec"
2298 matroska_demuxer_suggest="bzlib lzo zlib"
2299 matroska_muxer_select="riffenc"
2300 mmf_muxer_select="riffenc"
2301 mov_demuxer_select="riffdec"
2302 mov_demuxer_suggest="zlib"
2303 mov_muxer_select="riffenc rtpenc_chain"
2304 mp3_demuxer_select="mpegaudio_parser"
2305 mp4_muxer_select="mov_muxer"
2306 mpegts_muxer_select="adts_muxer latm_muxer"
2307 mpegtsraw_demuxer_select="mpegts_demuxer"
2308 mxf_d10_muxer_select="mxf_muxer"
2309 nut_muxer_select="riffenc"
2310 nuv_demuxer_select="riffdec"
2311 ogg_demuxer_select="golomb"
2312 psp_muxer_select="mov_muxer"
2313 rtp_demuxer_select="sdp_demuxer"
2314 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2315 rtsp_demuxer_select="http_protocol rtpdec"
2316 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2317 sap_demuxer_select="sdp_demuxer"
2318 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2319 sdp_demuxer_select="rtpdec"
2320 smoothstreaming_muxer_select="ismv_muxer"
2321 spdif_muxer_select="aac_parser"
2322 tak_demuxer_select="tak_parser"
2323 tg2_muxer_select="mov_muxer"
2324 tgp_muxer_select="mov_muxer"
2325 vobsub_demuxer_select="mpegps_demuxer"
2326 w64_demuxer_select="wav_demuxer"
2327 w64_muxer_select="wav_muxer"
2328 wav_demuxer_select="riffdec"
2329 wav_muxer_select="riffenc"
2330 webm_muxer_select="riffenc"
2331 wtv_demuxer_select="riffdec"
2332 wtv_muxer_select="riffenc"
2333 xmv_demuxer_select="riffdec"
2334 xwma_demuxer_select="riffdec"
2335
2336 # indevs / outdevs
2337 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2338 alsa_outdev_deps="alsa_asoundlib_h"
2339 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2340 caca_outdev_deps="libcaca"
2341 decklink_outdev_deps="decklink pthreads"
2342 decklink_outdev_extralibs="-lstdc++"
2343 dshow_indev_deps="IBaseFilter"
2344 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2345 dv1394_indev_deps="dv1394"
2346 dv1394_indev_select="dv_demuxer"
2347 fbdev_indev_deps="linux_fb_h"
2348 fbdev_outdev_deps="linux_fb_h"
2349 iec61883_indev_deps="libiec61883"
2350 jack_indev_deps="jack_jack_h sem_timedwait"
2351 lavfi_indev_deps="avfilter"
2352 libcdio_indev_deps="libcdio"
2353 libdc1394_indev_deps="libdc1394"
2354 libv4l2_indev_deps="libv4l2"
2355 openal_indev_deps="openal"
2356 opengl_outdev_deps="opengl"
2357 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2358 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2359 pulse_indev_deps="libpulse"
2360 pulse_outdev_deps="libpulse"
2361 sdl_outdev_deps="sdl"
2362 sndio_indev_deps="sndio_h"
2363 sndio_outdev_deps="sndio_h"
2364 v4l_indev_deps="linux_videodev_h"
2365 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2366 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2367 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2368 vfwcap_indev_extralibs="-lavicap32"
2369 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2370 xv_outdev_extralibs="-lXv -lX11 -lXext"
2371 x11grab_indev_deps="x11grab"
2372
2373 # protocols
2374 bluray_protocol_deps="libbluray"
2375 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2376 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2377 ffrtmpcrypt_protocol_select="tcp_protocol"
2378 ffrtmphttp_protocol_deps="!librtmp_protocol"
2379 ffrtmphttp_protocol_select="http_protocol"
2380 ftp_protocol_select="tcp_protocol"
2381 gopher_protocol_select="network"
2382 http_protocol_select="tcp_protocol"
2383 httpproxy_protocol_select="tcp_protocol"
2384 https_protocol_select="tls_protocol"
2385 librtmp_protocol_deps="librtmp"
2386 librtmpe_protocol_deps="librtmp"
2387 librtmps_protocol_deps="librtmp"
2388 librtmpt_protocol_deps="librtmp"
2389 librtmpte_protocol_deps="librtmp"
2390 libssh_protocol_deps="libssh"
2391 mmsh_protocol_select="http_protocol"
2392 mmst_protocol_select="network"
2393 rtmp_protocol_deps="!librtmp_protocol"
2394 rtmp_protocol_select="tcp_protocol"
2395 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2396 rtmps_protocol_deps="!librtmp_protocol"
2397 rtmps_protocol_select="tls_protocol"
2398 rtmpt_protocol_select="ffrtmphttp_protocol"
2399 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2400 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2401 rtp_protocol_select="udp_protocol"
2402 sctp_protocol_deps="struct_sctp_event_subscribe"
2403 sctp_protocol_select="network"
2404 srtp_protocol_select="rtp_protocol"
2405 tcp_protocol_select="network"
2406 tls_protocol_deps_any="openssl gnutls"
2407 tls_protocol_select="tcp_protocol"
2408 udp_protocol_select="network"
2409 unix_protocol_deps="sys_un_h"
2410 unix_protocol_select="network"
2411
2412 # filters
2413 aconvert_filter_deps="swresample"
2414 amovie_filter_deps="avcodec avformat"
2415 aresample_filter_deps="swresample"
2416 ass_filter_deps="libass"
2417 asyncts_filter_deps="avresample"
2418 atempo_filter_deps="avcodec"
2419 atempo_filter_select="rdft"
2420 azmq_filter_deps="libzmq"
2421 blackframe_filter_deps="gpl"
2422 boxblur_filter_deps="gpl"
2423 colormatrix_filter_deps="gpl"
2424 cropdetect_filter_deps="gpl"
2425 dctdnoiz_filter_deps="avcodec"
2426 dctdnoiz_filter_select="dct"
2427 delogo_filter_deps="gpl"
2428 deshake_filter_deps="avcodec"
2429 deshake_filter_select="dsputil"
2430 drawtext_filter_deps="libfreetype"
2431 ebur128_filter_deps="gpl"
2432 flite_filter_deps="libflite"
2433 frei0r_filter_deps="frei0r dlopen"
2434 frei0r_filter_extralibs='$ldl'
2435 frei0r_src_filter_deps="frei0r dlopen"
2436 frei0r_src_filter_extralibs='$ldl'
2437 geq_filter_deps="gpl"
2438 histeq_filter_deps="gpl"
2439 hqdn3d_filter_deps="gpl"
2440 interlace_filter_deps="gpl"
2441 kerndeint_filter_deps="gpl"
2442 ladspa_filter_deps="ladspa dlopen"
2443 mcdeint_filter_deps="avcodec gpl"
2444 movie_filter_deps="avcodec avformat"
2445 mp_filter_deps="gpl avcodec swscale inline_asm"
2446 mpdecimate_filter_deps="gpl avcodec"
2447 mptestsrc_filter_deps="gpl"
2448 negate_filter_deps="lut_filter"
2449 perspective_filter_deps="gpl"
2450 ocv_filter_deps="libopencv"
2451 owdenoise_filter_deps="gpl"
2452 pan_filter_deps="swresample"
2453 phase_filter_deps="gpl"
2454 pp_filter_deps="gpl postproc"
2455 pullup_filter_deps="gpl"
2456 removelogo_filter_deps="avcodec avformat swscale"
2457 resample_filter_deps="avresample"
2458 sab_filter_deps="gpl swscale"
2459 scale_filter_deps="swscale"
2460 smartblur_filter_deps="gpl swscale"
2461 showspectrum_filter_deps="avcodec"
2462 showspectrum_filter_select="rdft"
2463 spp_filter_deps="gpl avcodec"
2464 spp_filter_select="fft"
2465 stereo3d_filter_deps="gpl"
2466 subtitles_filter_deps="avformat avcodec libass"
2467 super2xsai_filter_deps="gpl"
2468 tinterlace_filter_deps="gpl"
2469 vidstabdetect_filter_deps="libvidstab"
2470 vidstabtransform_filter_deps="libvidstab"
2471 pixfmts_super2xsai_test_deps="super2xsai_filter"
2472 tinterlace_merge_test_deps="tinterlace_filter"
2473 tinterlace_pad_test_deps="tinterlace_filter"
2474 zmq_filter_deps="libzmq"
2475
2476 # examples
2477 avio_reading="avformat avcodec avutil"
2478 avcodec_example_deps="avcodec avutil"
2479 demuxing_decoding_example_deps="avcodec avformat avutil"
2480 filter_audio_example_deps="avfilter avutil"
2481 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2482 filtering_video_example_deps="avfilter avcodec avformat avutil"
2483 metadata_example_deps="avformat avutil"
2484 muxing_example_deps="avcodec avformat avutil swscale"
2485 remuxing_example_deps="avcodec avformat avutil"
2486 resampling_audio_example_deps="avutil swresample"
2487 scaling_video_example_deps="avutil swscale"
2488 transcode_aac_example_deps="avcodec avformat swresample"
2489 transcoding_example_deps="avfilter avcodec avformat avutil"
2490
2491 # libraries
2492 avcodec_deps="avutil"
2493 avdevice_deps="avutil avcodec avformat"
2494 avfilter_deps="avutil"
2495 avformat_deps="avutil avcodec"
2496 avresample_deps="avutil"
2497 postproc_deps="avutil gpl"
2498 swscale_deps="avutil"
2499
2500 # programs
2501 ffmpeg_deps="avcodec avfilter avformat swresample"
2502 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2503                null_filter
2504                setpts_filter trim_filter"
2505 ffplay_deps="avcodec avformat swscale swresample sdl"
2506 ffplay_libs='$sdl_libs'
2507 ffplay_select="rdft crop_filter"
2508 ffprobe_deps="avcodec avformat"
2509 ffserver_deps="avformat fork sarestart"
2510 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2511
2512 # documentation
2513 podpages_deps="perl"
2514 manpages_deps="perl pod2man"
2515 htmlpages_deps="perl texi2html"
2516 txtpages_deps="perl makeinfo"
2517 doc_deps_any="manpages htmlpages podpages txtpages"
2518
2519 # default parameters
2520
2521 logfile="config.log"
2522
2523 # installation paths
2524 prefix_default="/usr/local"
2525 bindir_default='${prefix}/bin'
2526 datadir_default='${prefix}/share/ffmpeg'
2527 docdir_default='${prefix}/share/doc/ffmpeg'
2528 incdir_default='${prefix}/include'
2529 libdir_default='${prefix}/lib'
2530 mandir_default='${prefix}/share/man'
2531 shlibdir_default="$libdir_default"
2532
2533 # toolchain
2534 ar_default="ar"
2535 cc_default="gcc"
2536 cxx_default="g++"
2537 host_cc_default="gcc"
2538 cp_f="cp -f"
2539 install="install"
2540 ln_s="ln -s -f"
2541 nm_default="nm -g"
2542 objformat="elf"
2543 pkg_config_default=pkg-config
2544 ranlib="ranlib"
2545 strip_default="strip"
2546 yasmexe_default="yasm"
2547 windres_default="windres"
2548
2549 nogas=":"
2550
2551 # OS
2552 target_os_default=$(tolower $(uname -s))
2553 host_os=$target_os_default
2554
2555 # machine
2556 if test "$target_os_default" = aix; then
2557     arch_default=$(uname -p)
2558 else
2559     arch_default=$(uname -m)
2560 fi
2561 cpu="generic"
2562
2563 # configurable options
2564 enable $PROGRAM_LIST
2565 enable $DOCUMENT_LIST
2566 enable $EXAMPLE_LIST
2567 enable $(filter_out avresample $LIBRARY_LIST)
2568 enable stripping
2569
2570 enable asm
2571 enable debug
2572 enable doc
2573 enable optimizations
2574 enable runtime_cpudetect
2575 enable safe_bitstream_reader
2576 enable static
2577 enable swscale_alpha
2578
2579 # Enable hwaccels by default.
2580 enable dxva2 vaapi vda vdpau xvmc
2581 enable xlib
2582
2583 # build settings
2584 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2585 LIBPREF="lib"
2586 LIBSUF=".a"
2587 FULLNAME='$(NAME)$(BUILDSUF)'
2588 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2589 SLIBPREF="lib"
2590 SLIBSUF=".so"
2591 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2592 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2593 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2594 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2595 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2596 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2597
2598 asflags_filter=echo
2599 cflags_filter=echo
2600 ldflags_filter=echo
2601
2602 AS_C='-c'
2603 AS_O='-o $@'
2604 CC_C='-c'
2605 CC_E='-E -o $@'
2606 CC_O='-o $@'
2607 CXX_C='-c'
2608 CXX_O='-o $@'
2609 LD_O='-o $@'
2610 LD_LIB='-l%'
2611 LD_PATH='-L'
2612 HOSTCC_C='-c'
2613 HOSTCC_E='-E -o $@'
2614 HOSTCC_O='-o $@'
2615 HOSTLD_O='-o $@'
2616
2617 host_libs='-lm'
2618 host_cflags_filter=echo
2619 host_ldflags_filter=echo
2620
2621 target_path='$(CURDIR)'
2622
2623 # since the object filename is not given with the -MM flag, the compiler
2624 # is only able to print the basename, and we must add the path ourselves
2625 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2626 DEPFLAGS='-MM'
2627
2628 # find source path
2629 if test -f configure; then
2630     source_path=.
2631 else
2632     source_path=$(cd $(dirname "$0"); pwd)
2633     echo "$source_path" | grep -q '[[:blank:]]' &&
2634         die "Out of tree builds are impossible with whitespace in source path."
2635     test -e "$source_path/config.h" &&
2636         die "Out of tree builds are impossible with config.h in source dir."
2637 fi
2638
2639 for v in "$@"; do
2640     r=${v#*=}
2641     l=${v%"$r"}
2642     r=$(sh_quote "$r")
2643     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2644 done
2645
2646 find_things(){
2647     thing=$1
2648     pattern=$2
2649     file=$source_path/$3
2650     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2651 }
2652
2653 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2654 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2655 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2656 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2657 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2658 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2659 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2660 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2661 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2662 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2663 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2664
2665 ALL_COMPONENTS="
2666     $BSF_LIST
2667     $DECODER_LIST
2668     $DEMUXER_LIST
2669     $ENCODER_LIST
2670     $FILTER_LIST
2671     $HWACCEL_LIST
2672     $INDEV_LIST
2673     $MUXER_LIST
2674     $OUTDEV_LIST
2675     $PARSER_LIST
2676     $PROTOCOL_LIST
2677 "
2678
2679 for n in $COMPONENT_LIST; do
2680     v=$(toupper ${n%s})_LIST
2681     eval enable \$$v
2682     eval ${n}_if_any="\$$v"
2683 done
2684
2685 enable $ARCH_EXT_LIST
2686
2687 die_unknown(){
2688     echo "Unknown option \"$1\"."
2689     echo "See $0 --help for available options."
2690     exit 1
2691 }
2692
2693 print_3_columns() {
2694     cat | tr ' ' '\n' | sort | pr -r -3 -t
2695 }
2696
2697 show_list() {
2698     suffix=_$1
2699     shift
2700     echo $* | sed s/$suffix//g | print_3_columns
2701     exit 0
2702 }
2703
2704 rand_list(){
2705     IFS=', '
2706     set -- $*
2707     unset IFS
2708     for thing; do
2709         comp=${thing%:*}
2710         prob=${thing#$comp}
2711         prob=${prob#:}
2712         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2713         echo "prob ${prob:-0.5}"
2714         printf '%s\n' $comp
2715     done
2716 }
2717
2718 do_random(){
2719     action=$1
2720     shift
2721     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2722     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2723 }
2724
2725 for opt do
2726     optval="${opt#*=}"
2727     case "$opt" in
2728         --extra-ldflags=*)
2729             add_ldflags $optval
2730         ;;
2731         --extra-libs=*)
2732             add_extralibs $optval
2733         ;;
2734         --disable-devices)
2735             disable $INDEV_LIST $OUTDEV_LIST
2736         ;;
2737         --enable-debug=*)
2738             debuglevel="$optval"
2739         ;;
2740         --disable-programs)
2741             disable $PROGRAM_LIST
2742         ;;
2743         --disable-everything)
2744             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2745         ;;
2746         --disable-all)
2747             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2748             disable $LIBRARY_LIST $PROGRAM_LIST doc
2749         ;;
2750         --enable-random|--disable-random)
2751             action=${opt%%-random}
2752             do_random ${action#--} $COMPONENT_LIST
2753         ;;
2754         --enable-random=*|--disable-random=*)
2755             action=${opt%%-random=*}
2756             do_random ${action#--} $optval
2757         ;;
2758         --enable-*=*|--disable-*=*)
2759             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2760             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2761             eval list=\$$(toupper $thing)_LIST
2762             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2763             list=$(filter "$name" $list)
2764             [ "$list" = "" ] && warn "Option $opt did not match anything"
2765             $action $list
2766         ;;
2767         --enable-?*|--disable-?*)
2768             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2769             if is_in $option $COMPONENT_LIST; then
2770                 test $action = disable && action=unset
2771                 eval $action \$$(toupper ${option%s})_LIST
2772             elif is_in $option $CMDLINE_SELECT; then
2773                 $action $option
2774             else
2775                 die_unknown $opt
2776             fi
2777         ;;
2778         --list-*)
2779             NAME="${opt#--list-}"
2780             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2781             NAME=${NAME%s}
2782             eval show_list $NAME \$$(toupper $NAME)_LIST
2783         ;;
2784         --help|-h) show_help
2785         ;;
2786         --fatal-warnings) enable fatal_warnings
2787         ;;
2788         *)
2789             optname="${opt%%=*}"
2790             optname="${optname#--}"
2791             optname=$(echo "$optname" | sed 's/-/_/g')
2792             if is_in $optname $CMDLINE_SET; then
2793                 eval $optname='$optval'
2794             elif is_in $optname $CMDLINE_APPEND; then
2795                 append $optname "$optval"
2796             else
2797                 die_unknown $opt
2798             fi
2799         ;;
2800     esac
2801 done
2802
2803 disabled logging && logfile=/dev/null
2804
2805 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2806 set >> $logfile
2807
2808 test -n "$cross_prefix" && enable cross_compile
2809
2810 if enabled cross_compile; then
2811     test -n "$arch" && test -n "$target_os" ||
2812         die "Must specify target arch and OS when cross-compiling"
2813 fi
2814
2815 ar_default="${cross_prefix}${ar_default}"
2816 cc_default="${cross_prefix}${cc_default}"
2817 cxx_default="${cross_prefix}${cxx_default}"
2818 nm_default="${cross_prefix}${nm_default}"
2819 pkg_config_default="${cross_prefix}${pkg_config_default}"
2820 ranlib="${cross_prefix}${ranlib}"
2821 strip_default="${cross_prefix}${strip_default}"
2822 windres_default="${cross_prefix}${windres_default}"
2823
2824 sysinclude_default="${sysroot}/usr/include"
2825
2826 test -n "$valgrind" && toolchain="valgrind-memcheck"
2827
2828 case "$toolchain" in
2829     clang-asan)
2830         cc_default="clang"
2831         add_cflags  -fsanitize=address
2832         add_ldflags -fsanitize=address
2833     ;;
2834     clang-tsan)
2835         cc_default="clang"
2836         add_cflags  -fsanitize=thread -pie
2837         add_ldflags -fsanitize=thread -pie
2838     ;;
2839     clang-usan)
2840         cc_default="clang"
2841         add_cflags  -fsanitize=undefined
2842         add_ldflags -fsanitize=undefined
2843     ;;
2844     gcc-asan)
2845         cc_default="gcc"
2846         add_cflags  -fsanitize=address
2847         add_ldflags -fsanitize=address
2848     ;;
2849     gcc-tsan)
2850         cc_default="gcc"
2851         add_cflags  -fsanitize=thread -pie -fPIC
2852         add_ldflags -fsanitize=thread -pie -fPIC
2853     ;;
2854     gcc-usan)
2855         cc_default="gcc"
2856         add_cflags  -fsanitize=undefined
2857         add_ldflags -fsanitize=undefined
2858     ;;
2859     valgrind-massif)
2860         target_exec_default=${valgrind:-"valgrind"}
2861         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"
2862     ;;
2863     valgrind-memcheck)
2864         target_exec_default=${valgrind:-"valgrind"}
2865         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2866     ;;
2867     msvc)
2868         # Check whether the current MSVC version needs the C99 converter.
2869         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2870         # support enough of C99 to build ffmpeg. Default to the new
2871         # behaviour if the regexp was unable to match anything, since this
2872         # successfully parses the version number of existing supported
2873         # versions that require the converter (MSVC 2010 and 2012).
2874         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2875         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2876             cc_default="cl"
2877         else
2878             cc_default="c99wrap cl"
2879         fi
2880         ld_default="link"
2881         nm_default="dumpbin -symbols"
2882         ar_default="lib"
2883         target_os_default="win32"
2884         # Use a relative path for TMPDIR. This makes sure all the
2885         # ffconf temp files are written with a relative path, avoiding
2886         # issues with msys/win32 path conversion for MSVC parameters
2887         # such as -Fo<file> or -out:<file>.
2888         TMPDIR=.
2889     ;;
2890     icl)
2891         cc_default="icl"
2892         ld_default="xilink"
2893         nm_default="dumpbin -symbols"
2894         ar_default="xilib"
2895         target_os_default="win32"
2896         TMPDIR=.
2897     ;;
2898     gcov)
2899         add_cflags  -fprofile-arcs -ftest-coverage
2900         add_ldflags -fprofile-arcs -ftest-coverage
2901     ;;
2902     hardened)
2903         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2904         add_ldflags -Wl,-z,relro -Wl,-z,now
2905     ;;
2906     ?*)
2907         die "Unknown toolchain $toolchain"
2908     ;;
2909 esac
2910
2911 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2912 enabled cross_compile || host_cc_default=$cc
2913 set_default host_cc
2914
2915 if ! $pkg_config --version >/dev/null 2>&1; then
2916     warn "$pkg_config not found, library detection may fail."
2917     pkg_config=false
2918 fi
2919
2920 exesuf() {
2921     case $1 in
2922         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2923     esac
2924 }
2925
2926 EXESUF=$(exesuf $target_os)
2927 HOSTEXESUF=$(exesuf $host_os)
2928
2929 # set temporary file name
2930 : ${TMPDIR:=$TEMPDIR}
2931 : ${TMPDIR:=$TMP}
2932 : ${TMPDIR:=/tmp}
2933
2934 if [ -n "$tempprefix" ] ; then
2935     mktemp(){
2936         echo $tempprefix.${HOSTNAME}.${UID}
2937     }
2938 elif ! check_cmd mktemp -u XXXXXX; then
2939     # simple replacement for missing mktemp
2940     # NOT SAFE FOR GENERAL USE
2941     mktemp(){
2942         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2943     }
2944 fi
2945
2946 tmpfile(){
2947     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2948         (set -C; exec > $tmp) 2>/dev/null ||
2949         die "Unable to create temporary file in $TMPDIR."
2950     append TMPFILES $tmp
2951     eval $1=$tmp
2952 }
2953
2954 trap 'rm -f -- $TMPFILES' EXIT
2955
2956 tmpfile TMPASM .asm
2957 tmpfile TMPC   .c
2958 tmpfile TMPCPP .cpp
2959 tmpfile TMPE   $EXESUF
2960 tmpfile TMPH   .h
2961 tmpfile TMPO   .o
2962 tmpfile TMPS   .S
2963 tmpfile TMPSH  .sh
2964 tmpfile TMPV   .ver
2965
2966 unset -f mktemp
2967
2968 chmod +x $TMPE
2969
2970 # make sure we can execute files in $TMPDIR
2971 cat > $TMPSH 2>> $logfile <<EOF
2972 #! /bin/sh
2973 EOF
2974 chmod +x $TMPSH >> $logfile 2>&1
2975 if ! $TMPSH >> $logfile 2>&1; then
2976     cat <<EOF
2977 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2978 variable to another directory and make sure that it is not mounted noexec.
2979 EOF
2980     die "Sanity test failed."
2981 fi
2982
2983 ccc_flags(){
2984     for flag; do
2985         case $flag in
2986             -std=c99)           echo -c99                       ;;
2987             -mcpu=*)            echo -arch ${flag#*=}           ;;
2988             -mieee)             echo -ieee                      ;;
2989             -O*|-fast)          echo $flag                      ;;
2990             -fno-math-errno)    echo -assume nomath_errno       ;;
2991             -g)                 echo -g3                        ;;
2992             -Wall)              echo -msg_enable level2         ;;
2993             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2994             -Wl,*)              echo $flag                      ;;
2995             -f*|-W*)                                            ;;
2996             *)                  echo $flag                      ;;
2997         esac
2998    done
2999 }
3000
3001 cparser_flags(){
3002     for flag; do
3003         case $flag in
3004             -Wno-switch)             echo -Wno-switch-enum ;;
3005             -Wno-format-zero-length) ;;
3006             -Wdisabled-optimization) ;;
3007             -Wno-pointer-sign)       echo -Wno-other ;;
3008             *)                       echo $flag ;;
3009         esac
3010     done
3011 }
3012
3013 msvc_common_flags(){
3014     for flag; do
3015         case $flag in
3016             # In addition to specifying certain flags under the compiler
3017             # specific filters, they must be specified here as well or else the
3018             # generic catch all at the bottom will print the original flag.
3019             -Wall)                ;;
3020             -std=c99)             ;;
3021             # Common flags
3022             -fomit-frame-pointer) ;;
3023             -g)                   echo -Z7 ;;
3024             -fno-math-errno)      ;;
3025             -fno-common)          ;;
3026             -fno-signed-zeros)    ;;
3027             -fPIC)                ;;
3028             -mthumb)              ;;
3029             -march=*)             ;;
3030             -lz)                  echo zlib.lib ;;
3031             -lavifil32)           echo vfw32.lib ;;
3032             -lavicap32)           echo vfw32.lib user32.lib ;;
3033             -l*)                  echo ${flag#-l}.lib ;;
3034             *)                    echo $flag ;;
3035         esac
3036     done
3037 }
3038
3039 msvc_flags(){
3040     msvc_common_flags "$@"
3041     for flag; do
3042         case $flag in
3043             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3044                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3045                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3046                                        -wd4554 \
3047                                        -wd4273 ;;
3048         esac
3049     done
3050 }
3051
3052 icl_flags(){
3053     msvc_common_flags "$@"
3054     for flag; do
3055         case $flag in
3056             # Despite what Intel's documentation says -Wall, which is supported
3057             # on Windows, does enable remarks so disable them here.
3058             -Wall)                echo $flag -Qdiag-disable:remark ;;
3059             -std=c99)             echo -Qstd=c99 ;;
3060         esac
3061     done
3062 }
3063
3064 pgi_flags(){
3065     for flag; do
3066         case $flag in
3067             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3068             -fomit-frame-pointer) echo -Mnoframe ;;
3069             -g)                   echo -gopt ;;
3070             *)                    echo $flag ;;
3071         esac
3072     done
3073 }
3074
3075 suncc_flags(){
3076     for flag; do
3077         case $flag in
3078             -march=*|-mcpu=*)
3079                 case "${flag#*=}" in
3080                     native)                   echo -xtarget=native       ;;
3081                     v9|niagara)               echo -xarch=sparc          ;;
3082                     ultrasparc)               echo -xarch=sparcvis       ;;
3083                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3084                     i586|pentium)             echo -xchip=pentium        ;;
3085                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3086                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3087                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3088                     pentium4*)          echo -xtarget=pentium4           ;;
3089                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3090                     *-sse3)             echo -xarch=sse3                 ;;
3091                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3092                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3093                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3094                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3095                     bdver*)                    echo -xarch=avx           ;;
3096                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3097                     k8|opteron|athlon64|athlon-fx)
3098                                                echo -xarch=sse2a         ;;
3099                     athlon*)                   echo -xarch=pentium_proa  ;;
3100                 esac
3101                 ;;
3102             -std=c99)             echo -xc99              ;;
3103             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3104             -fPIC)                echo -KPIC -xcode=pic32 ;;
3105             -W*,*)                echo $flag              ;;
3106             -f*-*|-W*|-mimpure-text)                      ;;
3107             -shared)              echo -G                 ;;
3108             *)                    echo $flag              ;;
3109         esac
3110     done
3111 }
3112
3113 tms470_flags(){
3114     for flag; do
3115         case $flag in
3116             -march=*|-mcpu=*)
3117                 case "${flag#*=}" in
3118                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3119                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3120                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3121                     armv6*|arm11*)          echo -mv=6   ;;
3122                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3123                                             echo -mv=5e  ;;
3124                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3125                 esac
3126                 ;;
3127             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3128             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3129             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3130             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3131             -msoft-float)   echo --float_support=vfplib       ;;
3132             -O[0-3]|-mf=*)  echo $flag                        ;;
3133             -g)             echo -g -mn                       ;;
3134             -pds=*)         echo $flag                        ;;
3135             -D*|-I*)        echo $flag                        ;;
3136             --gcc|--abi=*)  echo $flag                        ;;
3137             -me)            echo $flag                        ;;
3138         esac
3139     done
3140 }
3141
3142 probe_cc(){
3143     pfx=$1
3144     _cc=$2
3145
3146     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3147     unset _ld_o _ldflags _ld_lib _ld_path
3148     unset _depflags _DEPCMD _DEPFLAGS
3149     _flags_filter=echo
3150
3151     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3152         true # no-op to avoid reading stdin in following checks
3153     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3154         _type=llvm_gcc
3155         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3156         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3157         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3158         _cflags_speed='-O3'
3159         _cflags_size='-Os'
3160     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3161         _type=gcc
3162         gcc_version=$($_cc --version | head -n1)
3163         gcc_basever=$($_cc -dumpversion)
3164         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3165         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3166         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3167         if ! $_cc -dumpversion | grep -q '^2\.'; then
3168             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3169         fi
3170         _cflags_speed='-O3'
3171         _cflags_size='-Os'
3172     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3173         _type=icc
3174         _ident=$($_cc --version | head -n1)
3175         _depflags='-MMD'
3176         _cflags_speed='-O3'
3177         _cflags_size='-Os'
3178         _cflags_noopt='-O1'
3179     elif $_cc -v 2>&1 | grep -q xlc; then
3180         _type=xlc
3181         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3182         _cflags_speed='-O5'
3183         _cflags_size='-O5 -qcompact'
3184     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3185         _type=ccc
3186         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3187         _DEPFLAGS='-M'
3188         _cflags_speed='-fast'
3189         _cflags_size='-O1'
3190         _flags_filter=ccc_flags
3191     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM C/C[+][+] Compiler|Component: ARM Compiler "; then
3192         test -d "$sysroot" || die "No valid sysroot specified."
3193         _type=armcc
3194         _ident=$($_cc --vsn | head -n1)
3195         armcc_conf="$PWD/armcc.conf"
3196         $_cc --arm_linux_configure                 \
3197              --arm_linux_config_file="$armcc_conf" \
3198              --configure_sysroot="$sysroot"        \
3199              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3200              die "Error creating armcc configuration file."
3201         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3202         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3203         as_default="${cross_prefix}gcc"
3204         _depflags='-MMD'
3205         _cflags_speed='-O3'
3206         _cflags_size='-Os'
3207     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3208         _type=tms470
3209         _ident=$($_cc -version | head -n1 | tr -s ' ')
3210         _flags='--gcc --abi=eabi -me'
3211         _cc_e='-ppl -fe=$@'
3212         _cc_o='-fe=$@'
3213         _depflags='-ppa -ppd=$(@:.o=.d)'
3214         _cflags_speed='-O3 -mf=5'
3215         _cflags_size='-O3 -mf=2'
3216         _flags_filter=tms470_flags
3217     elif $_cc -v 2>&1 | grep -q clang; then
3218         _type=clang
3219         _ident=$($_cc --version | head -n1)
3220         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3221         _cflags_speed='-O3'
3222         _cflags_size='-Os'
3223     elif $_cc -V 2>&1 | grep -q Sun; then
3224         _type=suncc
3225         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3226         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3227         _DEPFLAGS='-xM1 -xc99'
3228         _ldflags='-std=c99'
3229         _cflags_speed='-O5'
3230         _cflags_size='-O5 -xspace'
3231         _flags_filter=suncc_flags
3232     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3233         _type=pathscale
3234         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3235         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3236         _cflags_speed='-O2'
3237         _cflags_size='-Os'
3238         _flags_filter='filter_out -Wdisabled-optimization'
3239     elif $_cc -v 2>&1 | grep -q Open64; then
3240         _type=open64
3241         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3242         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3243         _cflags_speed='-O2'
3244         _cflags_size='-Os'
3245         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3246     elif $_cc -V 2>&1 | grep -q Portland; then
3247         _type=pgi
3248         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3249         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3250         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3251         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3252         _cflags_noopt="-O"
3253         _flags_filter=pgi_flags
3254     elif $_cc 2>&1 | grep -q Microsoft; then
3255         _type=msvc
3256         _ident=$($cc 2>&1 | head -n1)
3257         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3258         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3259         _cflags_speed="-O2"
3260         _cflags_size="-O1"
3261         if $_cc 2>&1 | grep -q Linker; then
3262             _ld_o='-out:$@'
3263         else
3264             _ld_o='-Fe$@'
3265         fi
3266         _cc_o='-Fo$@'
3267         _cc_e='-P -Fi$@'
3268         _flags_filter=msvc_flags
3269         _ld_lib='lib%.a'
3270         _ld_path='-libpath:'
3271         _flags='-nologo'
3272         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3273         if [ $pfx = hostcc ]; then
3274             append _cflags -Dsnprintf=_snprintf
3275         fi
3276         disable stripping
3277     elif $_cc 2>&1 | grep -q Intel; then
3278         _type=icl
3279         _ident=$($cc 2>&1 | head -n1)
3280         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3281         # Not only is O3 broken on 13.x+ but it is slower on all previous
3282         # versions (tested) as well.
3283         _cflags_speed="-O2"
3284         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3285         if $_cc 2>&1 | grep -q Linker; then
3286             _ld_o='-out:$@'
3287         else
3288             _ld_o='-Fe$@'
3289         fi
3290         _cc_o='-Fo$@'
3291         _cc_e='-P'
3292         _flags_filter=icl_flags
3293         _ld_lib='lib%.a'
3294         _ld_path='-libpath:'
3295         # -Qdiag-error to make icl error when seeing certain unknown arguments
3296         _flags='-nologo -Qdiag-error:4044,10157'
3297         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3298         # with MSVC which enables it by default.
3299         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3300         if [ $pfx = hostcc ]; then
3301             append _cflags -Dsnprintf=_snprintf
3302         fi
3303     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3304         _type=cparser
3305         _ident=$($_cc --version | head -n1)
3306         _depflags='-MMD'
3307         _cflags_speed='-O4'
3308         _cflags_size='-O2'
3309         _flags_filter=cparser_flags
3310     fi
3311
3312     eval ${pfx}_type=\$_type
3313     eval ${pfx}_ident=\$_ident
3314 }
3315
3316 set_ccvars(){
3317     eval ${1}_C=\${_cc_c-\${${1}_C}}
3318     eval ${1}_E=\${_cc_e-\${${1}_E}}
3319     eval ${1}_O=\${_cc_o-\${${1}_O}}
3320
3321     if [ -n "$_depflags" ]; then
3322         eval ${1}_DEPFLAGS=\$_depflags
3323     else
3324         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3325         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3326         eval DEP${1}FLAGS=\$_flags
3327     fi
3328 }
3329
3330 probe_cc cc "$cc"
3331 cflags_filter=$_flags_filter
3332 cflags_speed=$_cflags_speed
3333 cflags_size=$_cflags_size
3334 cflags_noopt=$_cflags_noopt
3335 add_cflags $_flags $_cflags
3336 cc_ldflags=$_ldflags
3337 set_ccvars CC
3338
3339 probe_cc hostcc "$host_cc"
3340 host_cflags_filter=$_flags_filter
3341 add_host_cflags  $_flags $_cflags
3342 set_ccvars HOSTCC
3343
3344 test -n "$cc_type" && enable $cc_type ||
3345     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3346
3347 : ${as_default:=$cc}
3348 : ${dep_cc_default:=$cc}
3349 : ${ld_default:=$cc}
3350 : ${host_ld_default:=$host_cc}
3351 set_default ar as dep_cc ld host_ld windres
3352
3353 probe_cc as "$as"
3354 asflags_filter=$_flags_filter
3355 add_asflags $_flags $_cflags
3356 set_ccvars AS
3357
3358 probe_cc ld "$ld"
3359 ldflags_filter=$_flags_filter
3360 add_ldflags $_flags $_ldflags
3361 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3362 LD_O=${_ld_o-$LD_O}
3363 LD_LIB=${_ld_lib-$LD_LIB}
3364 LD_PATH=${_ld_path-$LD_PATH}
3365
3366 probe_cc hostld "$host_ld"
3367 host_ldflags_filter=$_flags_filter
3368 add_host_ldflags $_flags $_ldflags
3369 HOSTLD_O=${_ld_o-$HOSTLD_O}
3370
3371 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3372     probe_cc depcc "$dep_cc"
3373     CCDEP=${_DEPCMD:-$DEPCMD}
3374     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3375     DEPCCFLAGS=$_flags
3376 fi
3377
3378 if $ar 2>&1 | grep -q Microsoft; then
3379     arflags="-nologo"
3380     ar_o='-out:$@'
3381 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3382     arflags="rq"
3383     ar_o='$@'
3384 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3385     arflags='-Xany -r -c'
3386     ar_o='$@'
3387 else
3388     arflags="rc"
3389     ar_o='$@'
3390 fi
3391
3392 add_cflags $extra_cflags
3393 add_cxxflags $extra_cxxflags
3394 add_asflags $extra_cflags
3395
3396 if test -n "$sysroot"; then
3397     case "$cc_type" in
3398         gcc|llvm_gcc|clang)
3399             add_cppflags --sysroot="$sysroot"
3400             add_ldflags --sysroot="$sysroot"
3401 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3402             add_cppflags -isysroot "$sysroot"
3403             add_ldflags -isysroot "$sysroot"
3404         ;;
3405         tms470)
3406             add_cppflags -I"$sysinclude"
3407             add_ldflags  --sysroot="$sysroot"
3408         ;;
3409     esac
3410 fi
3411
3412 if test "$cpu" = host; then
3413     enabled cross_compile &&
3414         die "--cpu=host makes no sense when cross-compiling."
3415
3416     case "$cc_type" in
3417         gcc|llvm_gcc)
3418             check_native(){
3419                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3420                 sed -n "/cc1.*$1=/{
3421                             s/.*$1=\\([^ ]*\\).*/\\1/
3422                             p
3423                             q
3424                         }" $TMPE
3425             }
3426             cpu=$(check_native -march || check_native -mcpu)
3427         ;;
3428     esac
3429
3430     test "${cpu:-host}" = host &&
3431         die "--cpu=host not supported with compiler $cc"
3432 fi
3433
3434 # Deal with common $arch aliases
3435 case "$arch" in
3436     aarch64|arm64)
3437         arch="aarch64"
3438     ;;
3439     arm*|iPad*|iPhone*)
3440         arch="arm"
3441     ;;
3442     mips*|IP*)
3443         arch="mips"
3444     ;;
3445     parisc*|hppa*)
3446         arch="parisc"
3447     ;;
3448     "Power Macintosh"|ppc*|powerpc*)
3449         arch="ppc"
3450     ;;
3451     s390|s390x)
3452         arch="s390"
3453     ;;
3454     sh4|sh)
3455         arch="sh4"
3456     ;;
3457     sun4u|sparc*)
3458         arch="sparc"
3459     ;;
3460     tilegx|tile-gx)
3461         arch="tilegx"
3462     ;;
3463     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3464         arch="x86"
3465     ;;
3466 esac
3467
3468 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3469 enable $arch
3470
3471 # Add processor-specific flags
3472 if enabled aarch64; then
3473
3474     case $cpu in
3475         armv*)
3476             cpuflags="-march=$cpu"
3477         ;;
3478         *)
3479             cpuflags="-mcpu=$cpu"
3480         ;;
3481     esac
3482
3483 elif enabled alpha; then
3484
3485     cpuflags="-mcpu=$cpu"
3486
3487 elif enabled arm; then
3488
3489     check_arm_arch() {
3490         check_cpp_condition stddef.h \
3491             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3492             $cpuflags
3493     }
3494
3495     probe_arm_arch() {
3496         if   check_arm_arch 4;        then echo armv4;
3497         elif check_arm_arch 4T;       then echo armv4t;
3498         elif check_arm_arch 5;        then echo armv5;
3499         elif check_arm_arch 5E;       then echo armv5e;
3500         elif check_arm_arch 5T;       then echo armv5t;
3501         elif check_arm_arch 5TE;      then echo armv5te;
3502         elif check_arm_arch 5TEJ;     then echo armv5te;
3503         elif check_arm_arch 6;        then echo armv6;
3504         elif check_arm_arch 6J;       then echo armv6j;
3505         elif check_arm_arch 6K;       then echo armv6k;
3506         elif check_arm_arch 6Z;       then echo armv6z;
3507         elif check_arm_arch 6ZK;      then echo armv6zk;
3508         elif check_arm_arch 6T2;      then echo armv6t2;
3509         elif check_arm_arch 7;        then echo armv7;
3510         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3511         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3512         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3513         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3514         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3515         fi
3516     }
3517
3518     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3519
3520     case $cpu in
3521         armv*)
3522             cpuflags="-march=$cpu"
3523             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3524         ;;
3525         *)
3526             cpuflags="-mcpu=$cpu"
3527             case $cpu in
3528                 cortex-a*)                               subarch=armv7a  ;;
3529                 cortex-r*)                               subarch=armv7r  ;;
3530                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3531                 arm11*)                                  subarch=armv6   ;;
3532                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3533                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3534                 *)                             subarch=$(probe_arm_arch) ;;
3535             esac
3536         ;;
3537     esac
3538
3539     case "$subarch" in
3540         armv5t*)    enable fast_clz                ;;
3541         armv[6-8]*) enable fast_clz fast_unaligned ;;
3542     esac
3543
3544 elif enabled avr32; then
3545
3546     case $cpu in
3547         ap7[02]0[0-2])
3548             subarch="avr32_ap"
3549             cpuflags="-mpart=$cpu"
3550         ;;
3551         ap)
3552             subarch="avr32_ap"
3553             cpuflags="-march=$cpu"
3554         ;;
3555         uc3[ab]*)
3556             subarch="avr32_uc"
3557             cpuflags="-mcpu=$cpu"
3558         ;;
3559         uc)
3560             subarch="avr32_uc"
3561             cpuflags="-march=$cpu"
3562         ;;
3563     esac
3564
3565 elif enabled bfin; then
3566
3567     cpuflags="-mcpu=$cpu"
3568
3569 elif enabled mips; then
3570
3571     cpuflags="-march=$cpu"
3572
3573     case $cpu in
3574         24kc)
3575             disable mipsfpu
3576             disable mipsdspr1
3577             disable mipsdspr2
3578         ;;
3579         24kf*)
3580             disable mipsdspr1
3581             disable mipsdspr2
3582         ;;
3583         24kec|34kc|1004kc)
3584             disable mipsfpu
3585             disable mipsdspr2
3586         ;;
3587         24kef*|34kf*|1004kf*)
3588             disable mipsdspr2
3589         ;;
3590         74kc)
3591             disable mipsfpu
3592         ;;
3593     esac
3594
3595 elif enabled ppc; then
3596
3597     disable ldbrx
3598
3599     case $(tolower $cpu) in
3600         601|ppc601|powerpc601)
3601             cpuflags="-mcpu=601"
3602             disable altivec
3603         ;;
3604         603*|ppc603*|powerpc603*)
3605             cpuflags="-mcpu=603"
3606             disable altivec
3607         ;;
3608         604*|ppc604*|powerpc604*)
3609             cpuflags="-mcpu=604"
3610             disable altivec
3611         ;;
3612         g3|75*|ppc75*|powerpc75*)
3613             cpuflags="-mcpu=750"
3614             disable altivec
3615         ;;
3616         g4|745*|ppc745*|powerpc745*)
3617             cpuflags="-mcpu=7450"
3618         ;;
3619         74*|ppc74*|powerpc74*)
3620             cpuflags="-mcpu=7400"
3621         ;;
3622         g5|970|ppc970|powerpc970)
3623             cpuflags="-mcpu=970"
3624         ;;
3625         power[3-7]*)
3626             cpuflags="-mcpu=$cpu"
3627         ;;
3628         cell)
3629             cpuflags="-mcpu=cell"
3630             enable ldbrx
3631         ;;
3632         e500mc)
3633             cpuflags="-mcpu=e500mc"
3634             disable altivec
3635         ;;
3636         e500v2)
3637             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3638             disable altivec
3639             disable dcbzl
3640         ;;
3641         e500)
3642             cpuflags="-mcpu=8540 -mhard-float"
3643             disable altivec
3644             disable dcbzl
3645         ;;
3646     esac
3647
3648 elif enabled sparc; then
3649
3650     case $cpu in
3651         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3652             cpuflags="-mcpu=$cpu"
3653         ;;
3654         ultrasparc*|niagara[234])
3655             cpuflags="-mcpu=$cpu"
3656         ;;
3657     esac
3658
3659 elif enabled x86; then
3660
3661     case $cpu in
3662         i[345]86|pentium)
3663             cpuflags="-march=$cpu"
3664             disable mmx
3665         ;;
3666         # targets that do NOT support nopl and conditional mov (cmov)
3667         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3668             cpuflags="-march=$cpu"
3669             disable i686
3670         ;;
3671         # targets that do support nopl and conditional mov (cmov)
3672         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3673             cpuflags="-march=$cpu"
3674             enable i686
3675             enable fast_cmov
3676         ;;
3677         # targets that do support conditional mov but on which it's slow
3678         pentium4|pentium4m|prescott|nocona)
3679             cpuflags="-march=$cpu"
3680             enable i686
3681             disable fast_cmov
3682         ;;
3683     esac
3684
3685 fi
3686
3687 if [ "$cpu" != generic ]; then
3688     add_cflags  $cpuflags
3689     add_asflags $cpuflags
3690 fi
3691
3692 # compiler sanity check
3693 check_exec <<EOF
3694 int main(void){ return 0; }
3695 EOF
3696 if test "$?" != 0; then
3697     echo "$cc is unable to create an executable file."
3698     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3699         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3700         echo "Only do this if you know what cross compiling means."
3701     fi
3702     die "C compiler test failed."
3703 fi
3704
3705 add_cppflags -D_ISOC99_SOURCE
3706 add_cxxflags -D__STDC_CONSTANT_MACROS
3707 check_cflags -std=c99
3708 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3709 #include <stdlib.h>
3710 EOF
3711 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3712 #include <stdlib.h>
3713 EOF
3714
3715 add_host_cppflags -D_ISOC99_SOURCE
3716 check_host_cflags -std=c99
3717 check_host_cflags -Wall
3718 check_host_cflags -O3
3719
3720 check_64bit(){
3721     arch32=$1
3722     arch64=$2
3723     expr=$3
3724     check_code cc "" "int test[2*($expr) - 1]" &&
3725         subarch=$arch64 || subarch=$arch32
3726 }
3727
3728 case "$arch" in
3729     aarch64|alpha|ia64)
3730         spic=$shared
3731     ;;
3732     mips)
3733         check_64bit mips mips64 '_MIPS_SIM > 1'
3734         spic=$shared
3735     ;;
3736     parisc)
3737         check_64bit parisc parisc64 'sizeof(void *) > 4'
3738         spic=$shared
3739     ;;
3740     ppc)
3741         check_64bit ppc ppc64 'sizeof(void *) > 4'
3742         spic=$shared
3743     ;;
3744     s390)
3745         check_64bit s390 s390x 'sizeof(void *) > 4'
3746         spic=$shared
3747     ;;
3748     sparc)
3749         check_64bit sparc sparc64 'sizeof(void *) > 4'
3750         spic=$shared
3751     ;;
3752     x86)
3753         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3754         if test "$subarch" = "x86_64"; then
3755             spic=$shared
3756         fi
3757     ;;
3758     ppc)
3759         check_cc <<EOF && subarch="ppc64"
3760         int test[(int)sizeof(char*) - 7];
3761 EOF
3762     ;;
3763 esac
3764
3765 enable $subarch
3766 enabled spic && enable_weak pic
3767
3768 # OS specific
3769 case $target_os in
3770     aix)
3771         SHFLAGS=-shared
3772         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3773         enabled shared && add_ldflags -Wl,-brtl
3774         ;;
3775     haiku)
3776         prefix_default="/boot/common"
3777         network_extralibs="-lnetwork"
3778         host_libs=
3779         ;;
3780     sunos)
3781         SHFLAGS='-shared -Wl,-h,$$(@F)'
3782         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3783         network_extralibs="-lsocket -lnsl"
3784         # When using suncc to build, the Solaris linker will mark
3785         # an executable with each instruction set encountered by
3786         # the Solaris assembler.  As our libraries contain their own
3787         # guards for processor-specific code, instead suppress
3788         # generation of the HWCAPS ELF section on Solaris x86 only.
3789         enabled_all suncc x86 &&
3790             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3791             add_ldflags -Wl,-M,mapfile
3792         nm_default='nm -P -g'
3793         ;;
3794     netbsd)
3795         disable symver
3796         oss_indev_extralibs="-lossaudio"
3797         oss_outdev_extralibs="-lossaudio"
3798         enabled gcc || check_ldflags -Wl,-zmuldefs
3799         ;;
3800     openbsd|bitrig)
3801         disable symver
3802         SHFLAGS='-shared'
3803         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3804         SLIB_INSTALL_LINKS=
3805         oss_indev_extralibs="-lossaudio"
3806         oss_outdev_extralibs="-lossaudio"
3807         ;;
3808     dragonfly)
3809         disable symver
3810         ;;
3811     freebsd)
3812         ;;
3813     bsd/os)
3814         add_extralibs -lpoll -lgnugetopt
3815         strip="strip -d"
3816         ;;
3817     darwin)
3818         gas="gas-preprocessor.pl $cc"
3819         enabled ppc && add_asflags -force_cpusubtype_ALL
3820         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3821         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3822         strip="${strip} -x"
3823         add_ldflags -Wl,-dynamic,-search_paths_first
3824         SLIBSUF=".dylib"
3825         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3826         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3827         objformat="macho"
3828         enabled x86_64 && objformat="macho64"
3829         enabled_any pic shared ||
3830             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3831         ;;
3832     mingw32*)
3833         if test $target_os = "mingw32ce"; then
3834             disable network
3835         else
3836             target_os=mingw32
3837         fi
3838         LIBTARGET=i386
3839         if enabled x86_64; then
3840             LIBTARGET="i386:x86-64"
3841         elif enabled arm; then
3842             LIBTARGET=arm-wince
3843         fi
3844         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3845         check_ldflags -Wl,--nxcompat
3846         check_ldflags -Wl,--dynamicbase
3847         shlibdir_default="$bindir_default"
3848         SLIBPREF=""
3849         SLIBSUF=".dll"
3850         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3851         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3852         dlltool="${cross_prefix}dlltool"
3853         if check_cmd lib.exe -list; then
3854             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3855             if enabled x86_64; then
3856                 LIBTARGET=x64
3857             fi
3858         elif check_cmd $dlltool --version; then
3859             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3860         fi
3861         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3862         SLIB_INSTALL_LINKS=
3863         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3864         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3865         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3866         objformat="win32"
3867         ranlib=:
3868         enable dos_paths
3869         ;;
3870     win32|win64)
3871         disable symver
3872         if enabled shared; then
3873             # Link to the import library instead of the normal static library
3874             # for shared libs.
3875             LD_LIB='%.lib'
3876             # Cannot build both shared and static libs with MSVC or icl.
3877             disable static
3878         fi
3879         shlibdir_default="$bindir_default"
3880         SLIBPREF=""
3881         SLIBSUF=".dll"
3882         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3883         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3884         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3885         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3886         SLIB_INSTALL_LINKS=
3887         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3888         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3889         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3890         objformat="win32"
3891         ranlib=:
3892         enable dos_paths
3893         ;;
3894     cygwin*)
3895         target_os=cygwin
3896         shlibdir_default="$bindir_default"
3897         SLIBPREF="cyg"
3898         SLIBSUF=".dll"
3899         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3900         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3901         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3902         SLIB_INSTALL_LINKS=
3903         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3904         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3905         objformat="win32"
3906         enable dos_paths
3907         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3908         ;;
3909     *-dos|freedos|opendos)
3910         network_extralibs="-lsocket"
3911         objformat="coff"
3912         enable dos_paths
3913         add_cppflags -U__STRICT_ANSI__
3914         ;;
3915     linux)
3916         enable dv1394
3917         ;;
3918     irix*)
3919         target_os=irix
3920         ranlib="echo ignoring ranlib"
3921         ;;
3922     os/2*)
3923         strip="lxlite -CS"
3924         ln_s="cp -f"
3925         objformat="aout"
3926         add_cppflags -D_GNU_SOURCE
3927         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3928         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3929         LIBSUF="_s.a"
3930         SLIBPREF=""
3931         SLIBSUF=".dll"
3932         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3933         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3934         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3935             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3936             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3937             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3938             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3939             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3940         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3941             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3942         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3943         enable dos_paths
3944         enable_weak os2threads
3945         ;;
3946     gnu/kfreebsd)
3947         add_cppflags -D_BSD_SOURCE
3948         ;;
3949     gnu)
3950         ;;
3951     qnx)
3952         add_cppflags -D_QNX_SOURCE
3953         network_extralibs="-lsocket"
3954         ;;
3955     symbian)
3956         SLIBSUF=".dll"
3957         enable dos_paths
3958         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3959         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3960         add_ldflags -Wl,--target1-abs,--no-undefined \
3961                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3962                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3963         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3964                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3965                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3966         ;;
3967     osf1)
3968         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3969         ;;
3970     minix)
3971         ;;
3972     plan9)
3973         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3974                      -D_REENTRANT_SOURCE        \
3975                      -D_RESEARCH_SOURCE         \
3976                      -DFD_SETSIZE=96            \
3977                      -DHAVE_SOCK_OPTS
3978         add_compat strtod.o strtod=avpriv_strtod
3979         network_extralibs='-lbsd'
3980         exeobjs=compat/plan9/main.o
3981         disable ffserver
3982         cp_f='cp'
3983         ;;
3984     none)
3985         ;;
3986     *)
3987         die "Unknown OS '$target_os'."
3988         ;;
3989 esac
3990
3991 # determine libc flavour
3992
3993 probe_libc(){
3994     pfx=$1
3995     pfx_no_=${pfx%_}
3996     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3997     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3998         eval ${pfx}libc_type=uclibc
3999         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4000     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4001         eval ${pfx}libc_type=glibc
4002         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4003     # MinGW headers can be installed on Cygwin, so check for newlib first.
4004     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4005         eval ${pfx}libc_type=newlib
4006         add_${pfx}cppflags -U__STRICT_ANSI__
4007     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4008     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4009         eval ${pfx}libc_type=mingw64
4010         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4011             add_compat msvcrt/snprintf.o
4012             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4013         fi
4014         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4015         eval test \$${pfx_no_}cc_type = "gcc" &&
4016             add_${pfx}cppflags -D__printf__=__gnu_printf__
4017     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4018          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4019         eval ${pfx}libc_type=mingw32
4020         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4021             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4022             die "ERROR: MinGW32 runtime version must be >= 3.15."
4023         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4024         eval test \$${pfx_no_}cc_type = "gcc" &&
4025             add_${pfx}cppflags -D__printf__=__gnu_printf__
4026     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4027         eval ${pfx}libc_type=msvcrt
4028         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4029         # 0x601 by default unless something else is set by the user.
4030         # This can easily lead to us detecting functions only present
4031         # in such new versions and producing binaries requiring windows 7.0.
4032         # Therefore explicitly set the default to XP unless the user has
4033         # set something else on the command line.
4034         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4035             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4036     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4037         eval ${pfx}libc_type=klibc
4038     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4039         eval ${pfx}libc_type=bionic
4040     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4041         eval ${pfx}libc_type=solaris
4042         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4043     fi
4044 }
4045
4046 probe_libc
4047 test -n "$libc_type" && enable libc_$libc_type
4048 probe_libc host_
4049 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4050
4051 case $libc_type in
4052     bionic)
4053         add_compat strtod.o strtod=avpriv_strtod
4054         ;;
4055     msvcrt)
4056         add_compat strtod.o strtod=avpriv_strtod
4057         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4058                                      _snprintf=avpriv_snprintf  \
4059                                      vsnprintf=avpriv_vsnprintf
4060         ;;
4061 esac
4062
4063 # hacks for compiler/libc/os combinations
4064
4065 if enabled_all tms470 libc_glibc; then
4066     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4067     add_cppflags -D__USER_LABEL_PREFIX__=
4068     add_cppflags -D__builtin_memset=memset
4069     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4070     add_cflags   -pds=48    # incompatible redefinition of macro
4071 fi
4072
4073 if enabled_all ccc libc_glibc; then
4074     add_ldflags -Wl,-z,now  # calls to libots crash without this
4075 fi
4076
4077 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4078     add_cppflags '-I\$(SRC_PATH)/compat/float'
4079
4080 esc(){
4081     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4082 }
4083
4084 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4085
4086 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4087
4088 set_default $PATHS_LIST
4089 set_default nm
4090
4091 # we need to build at least one lib type
4092 if ! enabled_any static shared; then
4093     cat <<EOF
4094 At least one library type must be built.
4095 Specify --enable-static to build the static libraries or --enable-shared to
4096 build the shared libraries as well. To only build the shared libraries specify
4097 --disable-static in addition to --enable-shared.
4098 EOF
4099     exit 1;
4100 fi
4101
4102 # backward compatibility layer for incompatible_libav/fork_abi
4103 enabled incompatible_fork_abi  && enable incompatible_libav_abi
4104 enabled incompatible_libav_abi && enable incompatible_fork_abi
4105
4106 die_license_disabled() {
4107     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4108 }
4109
4110 die_license_disabled_gpl() {
4111     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4112 }
4113
4114 die_license_disabled gpl frei0r
4115 die_license_disabled gpl libcdio
4116 die_license_disabled gpl libutvideo
4117 die_license_disabled gpl libvidstab
4118 die_license_disabled gpl libx264
4119 die_license_disabled gpl libx265
4120 die_license_disabled gpl libxavs
4121 die_license_disabled gpl libxvid
4122 die_license_disabled gpl libzvbi
4123 die_license_disabled gpl x11grab
4124
4125 die_license_disabled nonfree libaacplus
4126 die_license_disabled nonfree libfaac
4127 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4128 enabled gpl && die_license_disabled_gpl nonfree openssl
4129
4130 die_license_disabled version3 libopencore_amrnb
4131 die_license_disabled version3 libopencore_amrwb
4132 die_license_disabled version3 libvo_aacenc
4133 die_license_disabled version3 libvo_amrwbenc
4134
4135 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4136
4137 disabled optimizations || check_cflags -fomit-frame-pointer
4138
4139 enable_weak_pic() {
4140     disabled pic && return
4141     enable pic
4142     add_cppflags -DPIC
4143     case "$target_os" in
4144     mingw*|cygwin*)
4145         ;;
4146     *)
4147         add_cflags -fPIC
4148         ;;
4149     esac
4150     add_asflags  -fPIC
4151 }
4152
4153 enabled pic && enable_weak_pic
4154
4155 check_cc <<EOF || die "Symbol mangling check failed."
4156 int ff_extern;
4157 EOF
4158 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4159 extern_prefix=${sym%%ff_extern*}
4160
4161 check_cc <<EOF && enable_weak inline_asm
4162 void foo(void) { __asm__ volatile ("" ::); }
4163 EOF
4164
4165 _restrict=
4166 for restrict_keyword in restrict __restrict__ __restrict; do
4167     check_cc <<EOF && _restrict=$restrict_keyword && break
4168 void foo(char * $restrict_keyword p);
4169 EOF
4170 done
4171
4172 check_cc <<EOF && enable pragma_deprecated
4173 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4174 EOF
4175
4176 check_cc <<EOF && enable attribute_packed
4177 struct { int x; } __attribute__((packed)) x;
4178 EOF
4179
4180 check_cc <<EOF && enable attribute_may_alias
4181 union { int x; } __attribute__((may_alias)) x;
4182 EOF
4183
4184 check_cc <<EOF || die "endian test failed"
4185 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4186 EOF
4187 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4188
4189 check_inline_asm inline_asm_labels '"1:\n"'
4190
4191 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4192
4193 if enabled aarch64; then
4194     # internal assembler in clang 3.3 does not support this instruction
4195     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4196     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4197
4198     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4199
4200 elif enabled alpha; then
4201
4202     check_cflags -mieee
4203
4204 elif enabled arm; then
4205
4206     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4207 float func(float a, float b){ return a+b; }
4208 EOF
4209
4210     enabled thumb && check_cflags -mthumb || check_cflags -marm
4211     nogas=die
4212
4213     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4214         enable vfp_args
4215     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4216         case "${cross_prefix:-$cc}" in
4217             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4218             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4219 __asm__ (".eabi_attribute 28, 1");
4220 int main(void) { return 0; }
4221 EOF
4222         esac
4223         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4224     fi
4225
4226     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4227     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4228     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4229     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4230     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4231     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4232
4233     [ $target_os = linux ] ||
4234         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4235             $ARCH_EXT_LIST_ARM
4236
4237     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4238
4239     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4240
4241 elif enabled mips; then
4242
4243     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4244     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
4245      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
4246     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4247      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4248     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4249      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4250     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4251      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4252
4253 elif enabled parisc; then
4254
4255     if enabled gcc; then
4256         case $($cc -dumpversion) in
4257             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4258         esac
4259     fi
4260
4261 elif enabled ppc; then
4262
4263     enable local_aligned_8 local_aligned_16
4264
4265     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4266     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4267     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4268     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4269
4270     # AltiVec flags: The FSF version of GCC differs from the Apple version
4271     if enabled altivec; then
4272         if ! enabled_any pic ppc64; then
4273             nogas=warn
4274         fi
4275         check_cflags -maltivec -mabi=altivec &&
4276         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4277         check_cflags -faltivec
4278
4279         # check if our compiler supports Motorola AltiVec C API
4280         check_cc <<EOF || disable altivec
4281 $inc_altivec_h
4282 int main(void) {
4283     vector signed int v1 = (vector signed int) { 0 };
4284     vector signed int v2 = (vector signed int) { 1 };
4285     v1 = vec_add(v1, v2);
4286     return 0;
4287 }
4288 EOF
4289
4290         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4291     fi
4292
4293 elif enabled x86; then
4294
4295     check_builtin rdtsc    intrin.h   "__rdtsc()"
4296     check_builtin mm_empty mmintrin.h "_mm_empty()"
4297
4298     enable local_aligned_8 local_aligned_16
4299
4300     # check whether EBP is available on x86
4301     # As 'i' is stored on the stack, this program will crash
4302     # if the base pointer is used to access it because the
4303     # base pointer is cleared in the inline assembly code.
4304     check_exec_crash <<EOF && enable ebp_available
4305 volatile int i=0;
4306 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4307 return i;
4308 EOF
4309
4310     # check whether EBX is available on x86
4311     check_inline_asm ebx_available '""::"b"(0)' &&
4312         check_inline_asm ebx_available '"":::"%ebx"'
4313
4314     # check whether xmm clobbers are supported
4315     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4316
4317     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4318         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4319
4320     # check whether binutils is new enough to compile SSSE3/MMXEXT
4321     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4322     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4323
4324     if ! disabled_any asm mmx yasm; then
4325         if check_cmd $yasmexe --version; then
4326             enabled x86_64 && yasm_extra="-m amd64"
4327             yasm_debug="-g dwarf2"
4328         elif check_cmd nasm -v; then
4329             yasmexe=nasm
4330             yasm_debug="-g -F dwarf"
4331             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4332         fi
4333
4334         YASMFLAGS="-f $objformat $yasm_extra"
4335         enabled pic               && append YASMFLAGS "-DPIC"
4336         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4337         case "$objformat" in
4338             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4339         esac
4340
4341         check_yasm "movbe ecx, [5]" && enable yasm ||
4342             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4343         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4344         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4345         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4346         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4347         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4348         check_yasm "CPU amdnop" || disable cpunop
4349     fi
4350
4351     case "$cpu" in
4352         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4353             disable fast_clz
4354         ;;
4355     esac
4356
4357 fi
4358
4359 if enabled asm; then
4360     as=${gas:=$as}
4361     check_as <<EOF && enable gnu_as || \
4362         $nogas "GNU assembler not found, install gas-preprocessor"
4363 .macro m n
4364 \n: .int 0
4365 .endm
4366 m x
4367 EOF
4368 fi
4369
4370 check_ldflags -Wl,--as-needed
4371
4372 if check_func dlopen; then
4373     ldl=
4374 elif check_func dlopen -ldl; then
4375     ldl=-ldl
4376 fi
4377
4378 if ! disabled network; then
4379     check_func getaddrinfo $network_extralibs
4380     check_func getservbyport $network_extralibs
4381     check_func inet_aton $network_extralibs
4382
4383     check_type netdb.h "struct addrinfo"
4384     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4385     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4386     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4387     check_type poll.h "struct pollfd"
4388     check_type netinet/sctp.h "struct sctp_event_subscribe"
4389     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4390     check_type netinet/in.h "struct sockaddr_in6"
4391     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4392     check_type "sys/types.h sys/socket.h" socklen_t
4393
4394     # Prefer arpa/inet.h over winsock2
4395     if check_header arpa/inet.h ; then
4396         check_func closesocket
4397     elif check_header winsock2.h ; then
4398         check_func_headers winsock2.h closesocket -lws2 &&
4399             network_extralibs="-lws2" ||
4400         { check_func_headers winsock2.h closesocket -lws2_32 &&
4401             network_extralibs="-lws2_32"; } || disable winsock2_h network
4402         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4403
4404         check_type ws2tcpip.h socklen_t
4405         check_type ws2tcpip.h "struct addrinfo"
4406         check_type ws2tcpip.h "struct group_source_req"
4407         check_type ws2tcpip.h "struct ip_mreq_source"
4408         check_type ws2tcpip.h "struct ipv6_mreq"
4409         check_type winsock2.h "struct pollfd"
4410         check_struct winsock2.h "struct sockaddr" sa_len
4411         check_type ws2tcpip.h "struct sockaddr_in6"
4412         check_type ws2tcpip.h "struct sockaddr_storage"
4413     else
4414         disable network
4415     fi
4416 fi
4417
4418 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4419 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4420 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4421 check_builtin sarestart signal.h "SA_RESTART"
4422 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4423
4424 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4425 check_func  ${malloc_prefix}memalign            && enable memalign
4426 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4427
4428 check_func  access
4429 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4430 check_func  fcntl
4431 check_func  fork
4432 check_func  gethrtime
4433 check_func  getopt
4434 check_func  getrusage
4435 check_func  gettimeofday
4436 check_func  isatty
4437 check_func  localtime_r
4438 check_func  mach_absolute_time
4439 check_func  mkstemp
4440 check_func  mmap
4441 check_func  mprotect
4442 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4443 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4444 check_func  sched_getaffinity
4445 check_func  setrlimit
4446 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4447 check_func  strerror_r
4448 check_func  sysconf
4449 check_func  sysctl
4450 check_func  usleep
4451
4452 check_func_headers conio.h kbhit
4453 check_func_headers io.h setmode
4454 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4455 check_func_headers stdlib.h getenv
4456
4457 check_func_headers windows.h GetProcessAffinityMask
4458 check_func_headers windows.h GetProcessTimes
4459 check_func_headers windows.h GetSystemTimeAsFileTime
4460 check_func_headers windows.h MapViewOfFile
4461 check_func_headers windows.h PeekNamedPipe
4462 check_func_headers windows.h SetConsoleTextAttribute
4463 check_func_headers windows.h Sleep
4464 check_func_headers windows.h VirtualAlloc
4465 check_func_headers glob.h glob
4466 enabled xlib &&
4467     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4468
4469 check_header cl/cl.h
4470 check_header direct.h
4471 check_header dlfcn.h
4472 check_header dxva.h
4473 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4474 check_header io.h
4475 check_header libcrystalhd/libcrystalhd_if.h
4476 check_header mach/mach_time.h
4477 check_header malloc.h
4478 check_header poll.h
4479 check_header sys/mman.h
4480 check_header sys/param.h
4481 check_header sys/resource.h
4482 check_header sys/select.h
4483 check_header sys/time.h
4484 check_header sys/un.h
4485 check_header termios.h
4486 check_header unistd.h
4487 check_header vdpau/vdpau.h
4488 check_header vdpau/vdpau_x11.h
4489 check_header VideoDecodeAcceleration/VDADecoder.h
4490 check_header windows.h
4491 check_header X11/extensions/XvMClib.h
4492 check_header asm/types.h
4493
4494 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4495 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4496 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4497
4498 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4499
4500 if ! disabled w32threads && ! enabled pthreads; then
4501     check_func_headers "windows.h process.h" _beginthreadex &&
4502         enable w32threads || disable w32threads
4503 fi
4504
4505 # check for some common methods of building with pthread support
4506 # do this before the optional library checks as some of them require pthreads
4507 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4508     enable pthreads
4509     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
4510         add_cflags -pthread
4511         add_extralibs -pthread
4512     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
4513         add_cflags -pthreads
4514         add_extralibs -pthreads
4515     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
4516         add_extralibs -lpthreadGC2
4517     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
4518         :
4519     elif ! check_func pthread_join && ! check_func pthread_create; then
4520         disable pthreads
4521     fi
4522     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
4523 fi
4524
4525
4526 if enabled pthreads; then
4527   check_func pthread_cancel
4528 fi
4529
4530 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4531 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4532
4533 check_lib math.h sin -lm && LIBM="-lm"
4534 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4535
4536 atan2f_args=2
4537 ldexpf_args=2
4538 powf_args=2
4539
4540 for func in $MATH_FUNCS; do
4541     eval check_mathfunc $func \${${func}_args:-1}
4542 done
4543
4544 # these are off by default, so fail if requested and not available
4545 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4546                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4547                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4548 enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
4549 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4550 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4551 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4552 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4553 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4554 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4555 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4556 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4557 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4558                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4559                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4560 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4561 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4562 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4563 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"
4564 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4565 enabled libfreetype       && require_libfreetype
4566 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4567 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4568                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4569                                done || die "ERROR: libgsm not found"; }
4570 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4571 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4572 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4573 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4574 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4575 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4576 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4577 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4578                                check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4579                                die "ERROR: libopenjpeg not found"; }
4580 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4581 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4582 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4583 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4584 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4585 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4586 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4587 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4588 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4589 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4590     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4591     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4592 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4593 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4594                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4595                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4596 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4597 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4598 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
4599 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4600 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4601 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4602 enabled libvpx            && {
4603     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4604                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4605     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 ||
4606                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4607     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4608     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; } }
4609 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4610 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4611 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4612                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4613                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4614 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4615                              { check_cpp_condition x265.h "X265_BUILD >= 9" ||
4616                                die "ERROR: libx265 version must be >= 9."; }
4617 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4618 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4619 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4620 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4621 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4622                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4623                                die "ERROR: openal not found"; } &&
4624                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4625                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4626 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4627                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4628                                die "ERROR: opencl not found"; } &&
4629                              { ! enabled_any w32threads os2threads ||
4630                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4631                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4632                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4633                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4634 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
4635                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
4636                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
4637                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
4638                                die "ERROR: opengl not found."
4639                              }
4640 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4641                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4642                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4643                                die "ERROR: openssl not found"; }
4644
4645 if enabled gnutls; then
4646     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4647     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4648 fi
4649
4650 # libdc1394 check
4651 if enabled libdc1394; then
4652     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4653         enable libdc1394_2; } ||
4654     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4655         enable libdc1394_1; } ||
4656     die "ERROR: No version of libdc1394 found "
4657 fi
4658
4659 SDL_CONFIG="${cross_prefix}sdl-config"
4660 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4661     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4662     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4663     enable sdl
4664 else
4665   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4666     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4667     sdl_libs=$("${SDL_CONFIG}" --libs)
4668     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4669     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4670     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4671     enable sdl
4672   fi
4673 fi
4674 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4675
4676 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4677 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4678 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
4679 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4680 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4681
4682 check_header linux/fb.h
4683 check_header linux/videodev.h
4684 check_header linux/videodev2.h
4685 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4686
4687 check_header sys/videoio.h
4688
4689 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4690 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4691 # w32api 3.12 had it defined wrong
4692 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4693
4694 check_type "dshow.h" IBaseFilter
4695
4696 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4697 { check_header dev/bktr/ioctl_meteor.h &&
4698   check_header dev/bktr/ioctl_bt848.h; } ||
4699 { check_header machine/ioctl_meteor.h &&
4700   check_header machine/ioctl_bt848.h; } ||
4701 { check_header dev/video/meteor/ioctl_meteor.h &&
4702   check_header dev/video/bktr/ioctl_bt848.h; } ||
4703 check_header dev/ic/bt8xx.h
4704
4705 check_header sndio.h
4706 if check_struct sys/soundcard.h audio_buf_info bytes; then
4707     enable_safe sys/soundcard.h
4708 else
4709     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4710     #include <sys/soundcard.h>
4711     audio_buf_info abc;
4712 EOF
4713 fi
4714 check_header soundcard.h
4715
4716 enabled_any alsa_indev alsa_outdev &&
4717     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4718
4719 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4720     check_func jack_port_get_latency_range -ljack
4721
4722 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4723
4724 if enabled libcdio; then
4725     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4726     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4727     die "ERROR: libcdio-paranoia not found"
4728 fi
4729
4730 enabled xlib &&
4731     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
4732
4733 enabled x11grab                                           &&
4734 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4735 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4736 { enabled xlib || die "ERROR: Xlib not found"; }
4737
4738 enabled vaapi &&
4739     check_lib va/va.h vaInitialize -lva ||
4740     disable vaapi
4741
4742 enabled vdpau &&
4743     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4744     disable vdpau
4745
4746 enabled vdpau && enabled xlib &&
4747     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4748     prepend ffmpeg_libs $($ldflags_filter "-lvdpau") &&
4749     enable vdpau_x11
4750
4751 # Funny iconv installations are not unusual, so check it after all flags have been set
4752 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4753
4754 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4755
4756 # add some useful compiler flags if supported
4757 check_cflags -Wdeclaration-after-statement
4758 check_cflags -Wall
4759 check_cflags -Wdisabled-optimization
4760 check_cflags -Wpointer-arith
4761 check_cflags -Wredundant-decls
4762 check_cflags -Wwrite-strings
4763 check_cflags -Wtype-limits
4764 check_cflags -Wundef
4765 check_cflags -Wmissing-prototypes
4766 check_cflags -Wno-pointer-to-int-cast
4767 check_cflags -Wstrict-prototypes
4768 enabled extra_warnings && check_cflags -Winline
4769
4770 check_disable_warning(){
4771     warning_flag=-W${1#-Wno-}
4772     test_cflags $warning_flag && add_cflags $1
4773 }
4774
4775 check_disable_warning -Wno-parentheses
4776 check_disable_warning -Wno-switch
4777 check_disable_warning -Wno-format-zero-length
4778 check_disable_warning -Wno-pointer-sign
4779
4780 # add some linker flags
4781 check_ldflags -Wl,--warn-common
4782 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4783 enabled rpath && add_ldflags -Wl,-rpath=$libdir
4784 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4785
4786 # add some strip flags
4787 # -wN '..@*' is more selective than -x, but not available everywhere.
4788 check_stripflags -wN \'..@*\' || check_stripflags -x
4789
4790 enabled neon_clobber_test &&
4791     check_ldflags -Wl,--wrap,avcodec_open2              \
4792                   -Wl,--wrap,avcodec_decode_audio4      \
4793                   -Wl,--wrap,avcodec_decode_video2      \
4794                   -Wl,--wrap,avcodec_decode_subtitle2   \
4795                   -Wl,--wrap,avcodec_encode_audio2      \
4796                   -Wl,--wrap,avcodec_encode_video2      \
4797                   -Wl,--wrap,avcodec_encode_subtitle    \
4798                   -Wl,--wrap,swr_convert                \
4799                   -Wl,--wrap,avresample_convert ||
4800     disable neon_clobber_test
4801
4802 enabled xmm_clobber_test &&
4803     check_ldflags -Wl,--wrap,avcodec_open2              \
4804                   -Wl,--wrap,avcodec_decode_audio4      \
4805                   -Wl,--wrap,avcodec_decode_video2      \
4806                   -Wl,--wrap,avcodec_decode_subtitle2   \
4807                   -Wl,--wrap,avcodec_encode_audio2      \
4808                   -Wl,--wrap,avcodec_encode_video       \
4809                   -Wl,--wrap,avcodec_encode_video2      \
4810                   -Wl,--wrap,avcodec_encode_subtitle    \
4811                   -Wl,--wrap,swr_convert                \
4812                   -Wl,--wrap,avresample_convert         \
4813                   -Wl,--wrap,sws_scale ||
4814     disable xmm_clobber_test
4815
4816 echo "X{};" > $TMPV
4817 if test_ldflags -Wl,--version-script,$TMPV; then
4818     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4819     check_cc <<EOF && enable symver_asm_label
4820 void ff_foo(void) __asm__ ("av_foo@VERSION");
4821 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4822 EOF
4823     check_cc <<EOF && enable symver_gnu_asm
4824 __asm__(".symver ff_foo,av_foo@VERSION");
4825 void ff_foo(void) {}
4826 EOF
4827 fi
4828
4829 if [ -z "$optflags" ]; then
4830     if enabled small; then
4831         optflags=$cflags_size
4832     elif enabled optimizations; then
4833         optflags=$cflags_speed
4834     else
4835         optflags=$cflags_noopt
4836     fi
4837 fi
4838
4839 check_optflags(){
4840     check_cflags "$@"
4841     enabled lto && check_ldflags "$@"
4842 }
4843
4844
4845 if enabled lto; then
4846     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4847     check_cflags  -flto
4848     check_ldflags -flto $cpuflags
4849 fi
4850
4851 check_optflags $optflags
4852 check_optflags -fno-math-errno
4853 check_optflags -fno-signed-zeros
4854
4855 enabled ftrapv && check_cflags -ftrapv
4856
4857 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4858 int x;
4859 EOF
4860
4861
4862 if enabled icc; then
4863     # Just warnings, no remarks
4864     check_cflags -w1
4865     # -wd: Disable following warnings
4866     # 144, 167, 556: -Wno-pointer-sign
4867     # 188: enumerated type mixed with another type
4868     # 1292: attribute "foo" ignored
4869     # 1419: external declaration in primary source file
4870     # 10006: ignoring unknown option -fno-signed-zeros
4871     # 10148: ignoring unknown option -Wno-parentheses
4872     # 10156: ignoring option '-W'; no argument required
4873     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4874     # 11030: Warning unknown option --as-needed
4875     # 10156: ignoring option '-export'; no argument required
4876     check_ldflags -wd10156,11030
4877     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4878     enable ebp_available
4879     if enabled x86_32; then
4880         icc_version=$($cc -dumpversion)
4881         test ${icc_version%%.*} -ge 11 &&
4882             check_cflags -falign-stack=maintain-16-byte ||
4883             disable aligned_stack
4884     fi
4885 elif enabled ccc; then
4886     # disable some annoying warnings
4887     add_cflags -msg_disable bitnotint
4888     add_cflags -msg_disable mixfuncvoid
4889     add_cflags -msg_disable nonstandcast
4890     add_cflags -msg_disable unsupieee
4891 elif enabled gcc; then
4892     check_optflags -fno-tree-vectorize
4893     check_cflags -Werror=implicit-function-declaration
4894     check_cflags -Werror=missing-prototypes
4895     check_cflags -Werror=return-type
4896     check_cflags -Werror=vla
4897     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4898 elif enabled llvm_gcc; then
4899     check_cflags -mllvm -stack-alignment=16
4900 elif enabled clang; then
4901     check_cflags -mllvm -stack-alignment=16
4902     check_cflags -Qunused-arguments
4903     check_cflags -Werror=implicit-function-declaration
4904     check_cflags -Werror=missing-prototypes
4905     check_cflags -Werror=return-type
4906 elif enabled cparser; then
4907     add_cflags -Wno-missing-variable-declarations
4908     add_cflags -Wno-empty-statement
4909 elif enabled armcc; then
4910     # 2523: use of inline assembler is deprecated
4911     add_cflags -W${armcc_opt},--diag_suppress=2523
4912     add_cflags -W${armcc_opt},--diag_suppress=1207
4913     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4914     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4915     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4916     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4917 elif enabled tms470; then
4918     add_cflags -pds=824 -pds=837
4919     disable inline_asm
4920 elif enabled pathscale; then
4921     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4922 elif enabled_any msvc icl; then
4923     enabled x86_32 && disable aligned_stack
4924     enabled_all x86_32 debug && add_cflags -Oy-
4925     enabled debug && add_ldflags -debug
4926     enable pragma_deprecated
4927     if enabled icl; then
4928         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4929         # (correctly) on icl 13.x.
4930         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4931             add_cflags -Qansi-alias
4932         # icl will pass the inline asm tests but inline asm is currently
4933         # not supported (build will fail)
4934         disabled inline_asm || warn "inline asm disabled due to issues with it in ICL"
4935         disable inline_asm
4936     fi
4937 fi
4938
4939 case $as_type in
4940     clang)
4941         add_asflags -Qunused-arguments
4942     ;;
4943 esac
4944
4945 case $ld_type in
4946     clang)
4947         check_ldflags -Qunused-arguments
4948     ;;
4949 esac
4950
4951 case $target_os in
4952     osf1)
4953         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4954     ;;
4955     plan9)
4956         add_cppflags -Dmain=plan9_main
4957     ;;
4958 esac
4959
4960 enable frame_thread_encoder
4961
4962 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4963
4964 check_deps $CONFIG_LIST       \
4965            $CONFIG_EXTRA      \
4966            $HAVE_LIST         \
4967            $ALL_COMPONENTS    \
4968
4969 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"
4970
4971
4972 if test $target_os = "haiku"; then
4973     disable memalign
4974     disable posix_memalign
4975 fi
4976
4977 ! enabled_any memalign posix_memalign aligned_malloc &&
4978     enabled_any $need_memalign && enable memalign_hack
4979
4980 # add_dep lib dep
4981 # -> enable ${lib}_deps_${dep}
4982 # -> add $dep to ${lib}_deps only once
4983 add_dep() {
4984     lib=$1
4985     dep=$2
4986     enabled "${lib}_deps_${dep}" && return 0
4987     enable  "${lib}_deps_${dep}"
4988     prepend "${lib}_deps" $dep
4989 }
4990
4991 # merge deps lib components
4992 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4993 merge_deps() {
4994     lib=$1
4995     shift
4996     for comp in $*; do
4997         enabled $comp || continue
4998         eval "dep=\"\$${comp}_deps\""
4999         for d in $dep; do
5000             add_dep $lib $d
5001         done
5002     done
5003 }
5004
5005 merge_deps libavfilter $FILTER_LIST
5006
5007 for thread in $THREADS_LIST; do
5008     if enabled $thread; then
5009         test -n "$thread_type" &&
5010             die "ERROR: Only one thread type must be selected." ||
5011             thread_type="$thread"
5012     fi
5013 done
5014
5015 echo "install prefix            $prefix"
5016 echo "source path               $source_path"
5017 echo "C compiler                $cc"
5018 echo "C library                 $libc_type"
5019 if test "$host_cc" != "$cc"; then
5020     echo "host C compiler           $host_cc"
5021     echo "host C library            $host_libc_type"
5022 fi
5023 echo "ARCH                      $arch ($cpu)"
5024 if test "$build_suffix" != ""; then
5025     echo "build suffix              $build_suffix"
5026 fi
5027 if test "$progs_suffix" != ""; then
5028     echo "progs suffix              $progs_suffix"
5029 fi
5030 if test "$extra_version" != ""; then
5031     echo "version string suffix     $extra_version"
5032 fi
5033 echo "big-endian                ${bigendian-no}"
5034 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5035 if enabled x86; then
5036     echo "${yasmexe}                      ${yasm-no}"
5037     echo "MMX enabled               ${mmx-no}"
5038     echo "MMXEXT enabled            ${mmxext-no}"
5039     echo "3DNow! enabled            ${amd3dnow-no}"
5040     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5041     echo "SSE enabled               ${sse-no}"
5042     echo "SSSE3 enabled             ${ssse3-no}"
5043     echo "AVX enabled               ${avx-no}"
5044     echo "XOP enabled               ${xop-no}"
5045     echo "FMA3 enabled              ${fma3-no}"
5046     echo "FMA4 enabled              ${fma4-no}"
5047     echo "i686 features enabled     ${i686-no}"
5048     echo "CMOV is fast              ${fast_cmov-no}"
5049     echo "EBX available             ${ebx_available-no}"
5050     echo "EBP available             ${ebp_available-no}"
5051 fi
5052 if enabled aarch64; then
5053     echo "NEON enabled              ${neon-no}"
5054     echo "VFP enabled               ${vfp-no}"
5055 fi
5056 if enabled arm; then
5057     echo "ARMv5TE enabled           ${armv5te-no}"
5058     echo "ARMv6 enabled             ${armv6-no}"
5059     echo "ARMv6T2 enabled           ${armv6t2-no}"
5060     echo "VFP enabled               ${vfp-no}"
5061     echo "NEON enabled              ${neon-no}"
5062     echo "THUMB enabled             ${thumb-no}"
5063 fi
5064 if enabled mips; then
5065     echo "MIPS FPU enabled          ${mipsfpu-no}"
5066     echo "MIPS32R2 enabled          ${mips32r2-no}"
5067     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
5068     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
5069 fi
5070 if enabled ppc; then
5071     echo "AltiVec enabled           ${altivec-no}"
5072     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5073     echo "dcbzl available           ${dcbzl-no}"
5074 fi
5075 echo "debug symbols             ${debug-no}"
5076 echo "strip symbols             ${stripping-no}"
5077 echo "optimize for size         ${small-no}"
5078 echo "optimizations             ${optimizations-no}"
5079 echo "static                    ${static-no}"
5080 echo "shared                    ${shared-no}"
5081 echo "postprocessing support    ${postproc-no}"
5082 echo "new filter support        ${avfilter-no}"
5083 echo "network support           ${network-no}"
5084 echo "threading support         ${thread_type-no}"
5085 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5086 echo "SDL support               ${sdl-no}"
5087 echo "opencl enabled            ${opencl-no}"
5088 echo "libzvbi enabled           ${libzvbi-no}"
5089 echo "texi2html enabled         ${texi2html-no}"
5090 echo "perl enabled              ${perl-no}"
5091 echo "pod2man enabled           ${pod2man-no}"
5092 echo "makeinfo enabled          ${makeinfo-no}"
5093 test -n "$random_seed" &&
5094     echo "random seed               ${random_seed}"
5095 echo
5096
5097 echo "External libraries:"
5098 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5099 echo
5100
5101 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5102     echo "Enabled ${type}s:"
5103     eval list=\$$(toupper $type)_LIST
5104     print_enabled '_*' $list | print_3_columns
5105     echo
5106 done
5107
5108 license="LGPL version 2.1 or later"
5109 if enabled nonfree; then
5110     license="nonfree and unredistributable"
5111 elif enabled gplv3; then
5112     license="GPL version 3 or later"
5113 elif enabled lgplv3; then
5114     license="LGPL version 3 or later"
5115 elif enabled gpl; then
5116     license="GPL version 2 or later"
5117 fi
5118
5119 echo "License: $license"
5120
5121 echo "Creating config.mak, config.h, and doc/config.texi..."
5122
5123 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5124
5125 enabled stripping || strip="echo skipping strip"
5126
5127 config_files="$TMPH config.mak doc/config.texi"
5128
5129 cat > config.mak <<EOF
5130 # Automatically generated by configure - do not modify!
5131 ifndef FFMPEG_CONFIG_MAK
5132 FFMPEG_CONFIG_MAK=1
5133 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
5134 prefix=$prefix
5135 LIBDIR=\$(DESTDIR)$libdir
5136 SHLIBDIR=\$(DESTDIR)$shlibdir
5137 INCDIR=\$(DESTDIR)$incdir
5138 BINDIR=\$(DESTDIR)$bindir
5139 DATADIR=\$(DESTDIR)$datadir
5140 DOCDIR=\$(DESTDIR)$docdir
5141 MANDIR=\$(DESTDIR)$mandir
5142 SRC_PATH=$source_path
5143 ifndef MAIN_MAKEFILE
5144 SRC_PATH:=\$(SRC_PATH:.%=..%)
5145 endif
5146 CC_IDENT=$cc_ident
5147 ARCH=$arch
5148 CC=$cc
5149 CXX=$cxx
5150 AS=$as
5151 LD=$ld
5152 DEPCC=$dep_cc
5153 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5154 DEPAS=$as
5155 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5156 YASM=$yasmexe
5157 DEPYASM=$yasmexe
5158 AR=$ar
5159 ARFLAGS=$arflags
5160 AR_O=$ar_o
5161 RANLIB=$ranlib
5162 STRIP=$strip
5163 CP=cp -p
5164 LN_S=$ln_s
5165 CPPFLAGS=$CPPFLAGS
5166 CFLAGS=$CFLAGS
5167 CXXFLAGS=$CXXFLAGS
5168 ASFLAGS=$ASFLAGS
5169 AS_C=$AS_C
5170 AS_O=$AS_O
5171 CC_C=$CC_C
5172 CC_E=$CC_E
5173 CC_O=$CC_O
5174 CXX_C=$CXX_C
5175 CXX_O=$CXX_O
5176 LD_O=$LD_O
5177 LD_LIB=$LD_LIB
5178 LD_PATH=$LD_PATH
5179 DLLTOOL=$dlltool
5180 WINDRES=$windres
5181 DEPWINDRES=$dep_cc
5182 LDFLAGS=$LDFLAGS
5183 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5184 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
5185 YASMFLAGS=$YASMFLAGS
5186 BUILDSUF=$build_suffix
5187 PROGSSUF=$progs_suffix
5188 FULLNAME=$FULLNAME
5189 LIBPREF=$LIBPREF
5190 LIBSUF=$LIBSUF
5191 LIBNAME=$LIBNAME
5192 SLIBPREF=$SLIBPREF
5193 SLIBSUF=$SLIBSUF
5194 EXESUF=$EXESUF
5195 EXTRA_VERSION=$extra_version
5196 CCDEP=$CCDEP
5197 CXXDEP=$CXXDEP
5198 CCDEP_FLAGS=$CCDEP_FLAGS
5199 ASDEP=$ASDEP
5200 ASDEP_FLAGS=$ASDEP_FLAGS
5201 CC_DEPFLAGS=$CC_DEPFLAGS
5202 AS_DEPFLAGS=$AS_DEPFLAGS
5203 HOSTCC=$host_cc
5204 HOSTLD=$host_ld
5205 HOSTCFLAGS=$host_cflags
5206 HOSTCPPFLAGS=$host_cppflags
5207 HOSTEXESUF=$HOSTEXESUF
5208 HOSTLDFLAGS=$host_ldflags
5209 HOSTLIBS=$host_libs
5210 DEPHOSTCC=$host_cc
5211 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5212 HOSTCCDEP=$HOSTCCDEP
5213 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5214 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5215 HOSTCC_C=$HOSTCC_C
5216 HOSTCC_O=$HOSTCC_O
5217 HOSTLD_O=$HOSTLD_O
5218 TARGET_EXEC=$target_exec $target_exec_args
5219 TARGET_PATH=$target_path
5220 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5221 CFLAGS-ffplay=$sdl_cflags
5222 ZLIB=$($ldflags_filter -lz)
5223 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5224 EXTRALIBS=$extralibs
5225 COMPAT_OBJS=$compat_objs
5226 EXEOBJS=$exeobjs
5227 INSTALL=$install
5228 LIBTARGET=${LIBTARGET}
5229 SLIBNAME=${SLIBNAME}
5230 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5231 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5232 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5233 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5234 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5235 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5236 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5237 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5238 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
5239 NOREDZONE_FLAGS=$noredzone_flags
5240 EOF
5241
5242 get_version(){
5243     lcname=lib${1}
5244     name=$(toupper $lcname)
5245     file=$source_path/$lcname/version.h
5246     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5247     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
5248     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5249     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5250     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5251     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5252 }
5253
5254 map 'get_version $v' $LIBRARY_LIST
5255
5256 print_program_libs(){
5257     eval "program_libs=\$${1}_libs"
5258     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5259 }
5260
5261 map 'print_program_libs $v' $PROGRAM_LIST
5262
5263 cat > $TMPH <<EOF
5264 /* Automatically generated by configure - do not modify! */
5265 #ifndef FFMPEG_CONFIG_H
5266 #define FFMPEG_CONFIG_H
5267 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
5268 #define FFMPEG_LICENSE "$(c_escape $license)"
5269 #define CONFIG_THIS_YEAR 2014
5270 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
5271 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5272 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5273 #define av_restrict $_restrict
5274 #define EXTERN_PREFIX "${extern_prefix}"
5275 #define EXTERN_ASM ${extern_prefix}
5276 #define BUILDSUF "$build_suffix"
5277 #define SLIBSUF "$SLIBSUF"
5278 #define HAVE_MMX2 HAVE_MMXEXT
5279 EOF
5280
5281 test -n "$assert_level" &&
5282     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
5283
5284 test -n "$malloc_prefix" &&
5285     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5286
5287 if enabled yasm; then
5288     append config_files $TMPASM
5289     printf '' >$TMPASM
5290 fi
5291
5292 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5293
5294
5295 mkdir -p doc
5296 echo "@c auto-generated by configure" > doc/config.texi
5297
5298 print_config ARCH_   "$config_files" $ARCH_LIST
5299 print_config HAVE_   "$config_files" $HAVE_LIST
5300 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5301                                      $CONFIG_EXTRA      \
5302                                      $ALL_COMPONENTS    \
5303
5304 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
5305 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
5306
5307 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5308 cp_if_changed $TMPH config.h
5309 touch .config
5310
5311 enabled yasm && cp_if_changed $TMPASM config.asm
5312
5313 cat > $TMPH <<EOF
5314 /* Generated by ffconf */
5315 #ifndef AVUTIL_AVCONFIG_H
5316 #define AVUTIL_AVCONFIG_H
5317 EOF
5318
5319 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5320
5321 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5322
5323 cp_if_changed $TMPH libavutil/avconfig.h
5324
5325 if test -n "$WARNINGS"; then
5326     printf "\n$WARNINGS"
5327     enabled fatal_warnings && exit 1
5328 fi
5329
5330 # build pkg-config files
5331
5332 pkgconfig_generate(){
5333     name=$1
5334     shortname=${name#lib}${build_suffix}
5335     comment=$2
5336     version=$3
5337     libs=$4
5338     requires=$5
5339     enabled ${name#lib} || return 0
5340     mkdir -p $name
5341     cat <<EOF > $name/$name${build_suffix}.pc
5342 prefix=$prefix
5343 exec_prefix=\${prefix}
5344 libdir=$libdir
5345 includedir=$incdir
5346
5347 Name: $name
5348 Description: $comment
5349 Version: $version
5350 Requires: $(enabled shared || echo $requires)
5351 Requires.private: $(enabled shared && echo $requires)
5352 Conflicts:
5353 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
5354 Libs.private: $(enabled shared && echo $libs)
5355 Cflags: -I\${includedir}
5356 EOF
5357
5358 mkdir -p doc/examples/pc-uninstalled
5359 includedir=${source_path}
5360 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5361     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5362 prefix=
5363 exec_prefix=
5364 libdir=\${pcfiledir}/../../../$name
5365 includedir=${includedir}
5366
5367 Name: $name
5368 Description: $comment
5369 Version: $version
5370 Requires: $requires
5371 Conflicts:
5372 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5373 Cflags: -I\${includedir}
5374 EOF
5375 }
5376
5377 lavfi_libs="libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5378 enabled libavfilter_deps_avcodec    && prepend lavfi_libs "libavcodec${build_suffix} = $LIBAVCODEC_VERSION,"
5379 enabled libavfilter_deps_avformat   && prepend lavfi_libs "libavformat${build_suffix} = $LIBAVFORMAT_VERSION,"
5380 enabled libavfilter_deps_avresample && prepend lavfi_libs "libavresample${build_suffix} = $LIBAVRESAMPLE_VERSION,"
5381 enabled libavfilter_deps_swscale    && prepend lavfi_libs "libswscale${build_suffix} = $LIBSWSCALE_VERSION,"
5382 enabled libavfilter_deps_swresample && prepend lavfi_libs "libswresample${build_suffix} = $LIBSWRESAMPLE_VERSION,"
5383 enabled libavfilter_deps_postproc   && prepend lavfi_libs "libpostproc${build_suffix} = $LIBPOSTPROC_VERSION,"
5384 lavfi_libs=${lavfi_libs%, }
5385
5386 lavd_libs="libavformat${build_suffix} = $LIBAVFORMAT_VERSION"
5387 enabled lavfi_indev && prepend lavd_libs "libavfilter${build_suffix} = $LIBAVFILTER_VERSION,"
5388
5389 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
5390 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5391 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec${build_suffix} = $LIBAVCODEC_VERSION"
5392 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs" "$lavd_libs"
5393 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
5394 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""           "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5395 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5396 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5397 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"