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

   1 #!/bin/sh
   2 #
   3 # Libav 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 LIBAV, 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 Libav."
  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:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --prefix=PREFIX          install in PREFIX [$prefix]
  82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
  84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
  85   --libdir=DIR             install libs in DIR [PREFIX/lib]
  86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  87   --incdir=DIR             install includes in DIR [PREFIX/include]
  88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
  90
  91 Licensing options:
  92   --enable-gpl             allow use of GPL code, the resulting libs
  93                            and binaries will be under GPL [no]
  94   --enable-version3        upgrade (L)GPL to version 3 [no]
  95   --enable-nonfree         allow use of nonfree code, the resulting libs
  96                            and binaries will be unredistributable [no]
  97
  98 Configuration options:
  99   --disable-static         do not build static libraries [no]
 100   --enable-shared          build shared libraries [no]
 101   --enable-small           optimize for size instead of speed
 102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
 103   --enable-gray            enable full grayscale support (slower color)
 104   --disable-swscale-alpha  disable alpha channel support in swscale
 105   --disable-all            disable building components, libraries and programs
 106
 107 Program options:
 108   --disable-programs       do not build command line programs
 109   --disable-avconv         disable avconv build
 110   --disable-avplay         disable avplay build
 111   --disable-avprobe        disable avprobe build
 112   --disable-avserver       deprecated, does nothing
 113
 114 Component options:
 115   --disable-doc            do not build documentation
 116   --disable-avdevice       disable libavdevice build
 117   --disable-avcodec        disable libavcodec build
 118   --disable-avformat       disable libavformat build
 119   --disable-avutil         disable libavutil build
 120   --disable-swscale        disable libswscale build
 121   --disable-avfilter       disable video filter support [no]
 122   --disable-avresample     disable libavresample build [no]
 123   --disable-pthreads       disable pthreads [auto]
 124   --disable-w32threads     disable Win32 threads [auto]
 125   --disable-network        disable network support [no]
 126   --disable-dct            disable DCT code
 127   --disable-error-resilience disable error resilience code
 128   --disable-lsp            disable LSP code
 129   --disable-lzo            disable LZO decoder code
 130   --disable-mdct           disable MDCT code
 131   --disable-rdft           disable RDFT code
 132   --disable-fft            disable FFT code
 133   --disable-faan           disable floating point AAN (I)DCT code
 134
 135 Hardware accelerators:
 136   --enable-d3d11va         enable D3D11VA code
 137   --enable-dxva2           enable DXVA2 code
 138   --enable-vaapi           enable VAAPI code
 139   --enable-vda             enable VDA code
 140   --enable-vdpau           enable VDPAU code
 141
 142 Individual component options:
 143   --disable-everything     disable all components listed below
 144   --disable-encoder=NAME   disable encoder NAME
 145   --enable-encoder=NAME    enable encoder NAME
 146   --disable-encoders       disable all encoders
 147   --disable-decoder=NAME   disable decoder NAME
 148   --enable-decoder=NAME    enable decoder NAME
 149   --disable-decoders       disable all decoders
 150   --disable-hwaccel=NAME   disable hwaccel NAME
 151   --enable-hwaccel=NAME    enable hwaccel NAME
 152   --disable-hwaccels       disable all hwaccels
 153   --disable-muxer=NAME     disable muxer NAME
 154   --enable-muxer=NAME      enable muxer NAME
 155   --disable-muxers         disable all muxers
 156   --disable-demuxer=NAME   disable demuxer NAME
 157   --enable-demuxer=NAME    enable demuxer NAME
 158   --disable-demuxers       disable all demuxers
 159   --enable-parser=NAME     enable parser NAME
 160   --disable-parser=NAME    disable parser NAME
 161   --disable-parsers        disable all parsers
 162   --enable-bsf=NAME        enable bitstream filter NAME
 163   --disable-bsf=NAME       disable bitstream filter NAME
 164   --disable-bsfs           disable all bitstream filters
 165   --enable-protocol=NAME   enable protocol NAME
 166   --disable-protocol=NAME  disable protocol NAME
 167   --disable-protocols      disable all protocols
 168   --enable-indev=NAME      enable input device NAME
 169   --disable-indev=NAME     disable input device NAME
 170   --disable-indevs         disable input devices
 171   --enable-outdev=NAME     enable output device NAME
 172   --disable-outdev=NAME    disable output device NAME
 173   --disable-outdevs        disable output devices
 174   --disable-devices        disable all devices
 175   --enable-filter=NAME     enable filter NAME
 176   --disable-filter=NAME    disable filter NAME
 177   --disable-filters        disable all filters
 178
 179 External library support:
 180   --enable-avisynth        enable reading of AviSynth script files [no]
 181   --enable-bzlib           enable bzlib [autodetect]
 182   --enable-frei0r          enable frei0r video filtering
 183   --enable-gnutls          enable gnutls [no]
 184   --enable-libbs2b         enable bs2b DSP library [no]
 185   --enable-libcdio         enable audio CD grabbing with libcdio
 186   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 187                            and libraw1394 [no]
 188   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 189   --enable-libfaac         enable AAC encoding via libfaac [no]
 190   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 191   --enable-libfreetype     enable libfreetype [no]
 192   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 193   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 194   --enable-libmfx          enable HW acceleration through libmfx
 195   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 196   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 197   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 198   --enable-libopencv       enable video filtering via libopencv [no]
 199   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 200   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 201   --enable-libopus         enable Opus de/encoding via libopus [no]
 202   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 203   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 204   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 205   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 206   --enable-libtheora       enable Theora encoding via libtheora [no]
 207   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 208   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 209   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 210   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
 211   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 212   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 213   --enable-libwebp         enable WebP encoding via libwebp [no]
 214   --enable-libx264         enable H.264 encoding via x264 [no]
 215   --enable-libx265         enable HEVC encoding via x265 [no]
 216   --enable-libxavs         enable AVS encoding via xavs [no]
 217   --enable-libxcb          enable X11 grabbing using XCB [no]
 218   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
 219   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
 220   --enable-libxvid         enable Xvid encoding via xvidcore,
 221                            native MPEG-4/Xvid encoder exists [no]
 222   --enable-mmal            enable decoding via MMAL [no]
 223   --enable-nvenc           enable encoding via NVENC [no]
 224   --enable-openssl         enable openssl [no]
 225   --enable-x11grab         enable X11 grabbing (legacy) [no]
 226   --enable-zlib            enable zlib [autodetect]
 227
 228 Toolchain options:
 229   --arch=ARCH              select architecture [$arch]
 230   --cpu=CPU                select the minimum required CPU (affects
 231                            instruction selection, may crash on older CPUs)
 232   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 233   --enable-cross-compile   assume a cross-compiler is used
 234   --sysroot=PATH           root of cross-build tree
 235   --sysinclude=PATH        location of cross-build system headers
 236   --target-os=OS           compiler targets OS [$target_os]
 237   --target-exec=CMD        command to run executables on target
 238   --target-path=DIR        path to view of build directory on target
 239   --target-samples=DIR     path to samples directory on target
 240   --toolchain=NAME         set tool defaults according to NAME
 241   --nm=NM                  use nm tool
 242   --ar=AR                  use archive tool AR [$ar_default]
 243   --as=AS                  use assembler AS [$as_default]
 244   --cc=CC                  use C compiler CC [$cc_default]
 245   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 246   --ld=LD                  use linker LD
 247   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 248   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 249   --host-cc=HOSTCC         use host C compiler HOSTCC
 250   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 251   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 252   --host-ld=HOSTLD         use host linker HOSTLD
 253   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 254   --host-libs=HLIBS        use libs HLIBS when linking for host
 255   --host-os=OS             compiler host OS [$target_os]
 256   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 257   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 258   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 259   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 260   --extra-version=STRING   version string suffix []
 261   --optflags=OPTFLAGS      override optimization-related compiler flags
 262   --build-suffix=SUFFIX    library name suffix []
 263   --enable-pic             build position-independent code
 264   --enable-thumb           compile for Thumb instruction set
 265   --enable-lto             use link-time optimization
 266
 267 Advanced options (experts only):
 268   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 269   --disable-symver         disable symbol versioning
 270   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 271   --disable-safe-bitstream-reader
 272                            disable buffer boundary checking in bitreaders
 273                            (faster, but may crash)
 274   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 275   --enable-sram            allow use of on-chip SRAM
 276
 277 Optimization options (experts only):
 278   --disable-asm            disable all assembly optimizations
 279   --disable-altivec        disable AltiVec optimizations
 280   --disable-vsx            disable VSX optimizations
 281   --disable-power8         disable POWER8 optimizations
 282   --disable-amd3dnow       disable 3DNow! optimizations
 283   --disable-amd3dnowext    disable 3DNow! extended optimizations
 284   --disable-mmx            disable MMX optimizations
 285   --disable-mmxext         disable MMXEXT optimizations
 286   --disable-sse            disable SSE optimizations
 287   --disable-sse2           disable SSE2 optimizations
 288   --disable-sse3           disable SSE3 optimizations
 289   --disable-ssse3          disable SSSE3 optimizations
 290   --disable-sse4           disable SSE4 optimizations
 291   --disable-sse42          disable SSE4.2 optimizations
 292   --disable-avx            disable AVX optimizations
 293   --disable-xop            disable XOP optimizations
 294   --disable-fma3           disable FMA3 optimizations
 295   --disable-fma4           disable FMA4 optimizations
 296   --disable-avx2           disable AVX2 optimizations
 297   --disable-armv5te        disable armv5te optimizations
 298   --disable-armv6          disable armv6 optimizations
 299   --disable-armv6t2        disable armv6t2 optimizations
 300   --disable-vfp            disable VFP optimizations
 301   --disable-neon           disable NEON optimizations
 302   --disable-inline-asm     disable use of inline assembly
 303   --disable-yasm           disable use of nasm/yasm assembly
 304
 305 Developer options (useful when working on Libav itself):
 306   --disable-debug          disable debugging symbols
 307   --enable-debug=LEVEL     set the debug level [$debuglevel]
 308   --disable-optimizations  disable compiler optimizations
 309   --enable-extra-warnings  enable more compiler warnings
 310   --samples=PATH           location of test samples for FATE, if not set use
 311                            \$LIBAV_SAMPLES at make invocation time.
 312   --enable-neon-clobber-test check NEON registers for clobbering (should be
 313                            used only for debugging purposes)
 314   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 315                            should be used only for debugging purposes)
 316   --enable-random          randomly enable/disable components
 317   --disable-random
 318   --enable-random=LIST     randomly enable/disable specific components or
 319   --disable-random=LIST    component groups. LIST is a comma-separated list
 320                            of NAME[:PROB] entries where NAME is a component
 321                            (group) and PROB the probability associated with
 322                            NAME (default 0.5).
 323   --random-seed=VALUE      seed value for --enable/disable-random
 324   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 325                            (only applies to --disable-optimizations builds)
 326
 327 NOTE: Object files are built at the place where configure is launched.
 328 EOF
 329   exit 0
 330 }
 331
 332 quotes='""'
 333
 334 log(){
 335     echo "$@" >> $logfile
 336 }
 337
 338 log_file(){
 339     log BEGIN $1
 340     pr -n -t $1 >> $logfile
 341     log END $1
 342 }
 343
 344 echolog(){
 345     log "$@"
 346     echo "$@"
 347 }
 348
 349 warn(){
 350     log "WARNING: $*"
 351     WARNINGS="${WARNINGS}WARNING: $*\n"
 352 }
 353
 354 die(){
 355     echolog "$@"
 356     cat <<EOF
 357
 358 If you think configure made a mistake, make sure you are using the latest
 359 version from Git.  If the latest version fails, report the problem to the
 360 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 361 EOF
 362     if disabled logging; then
 363         cat <<EOF
 364 Rerun configure with logging enabled (do not use --disable-logging), and
 365 include the log this produces with your report.
 366 EOF
 367     else
 368         cat <<EOF
 369 Include the log file "$logfile" produced by configure as this will help
 370 solving the problem.
 371 EOF
 372     fi
 373     exit 1
 374 }
 375
 376 # Avoid locale weirdness, besides we really just want to translate ASCII.
 377 toupper(){
 378     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 379 }
 380
 381 tolower(){
 382     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 383 }
 384
 385 c_escape(){
 386     echo "$*" | sed 's/["\\]/\\\0/g'
 387 }
 388
 389 sh_quote(){
 390     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 391     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 392     echo "$v"
 393 }
 394
 395 cleanws(){
 396     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 397 }
 398
 399 filter(){
 400     pat=$1
 401     shift
 402     for v; do
 403         eval "case $v in $pat) echo $v ;; esac"
 404     done
 405 }
 406
 407 filter_out(){
 408     pat=$1
 409     shift
 410     for v; do
 411         eval "case $v in $pat) ;; *) echo $v ;; esac"
 412     done
 413 }
 414
 415 map(){
 416     m=$1
 417     shift
 418     for v; do eval $m; done
 419 }
 420
 421 add_suffix(){
 422     suffix=$1
 423     shift
 424     for v; do echo ${v}${suffix}; done
 425 }
 426
 427 set_all(){
 428     value=$1
 429     shift
 430     for var in $*; do
 431         eval $var=$value
 432     done
 433 }
 434
 435 set_weak(){
 436     value=$1
 437     shift
 438     for var; do
 439         eval : \${$var:=$value}
 440     done
 441 }
 442
 443 sanitize_var_name(){
 444     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 445 }
 446
 447 set_safe(){
 448     var=$1
 449     shift
 450     eval $(sanitize_var_name "$var")='$*'
 451 }
 452
 453 get_safe(){
 454     eval echo \$$(sanitize_var_name "$1")
 455 }
 456
 457 pushvar(){
 458     for pvar in $*; do
 459         eval level=\${${pvar}_level:=0}
 460         eval ${pvar}_${level}="\$$pvar"
 461         eval ${pvar}_level=$(($level+1))
 462     done
 463 }
 464
 465 popvar(){
 466     for pvar in $*; do
 467         eval level=\${${pvar}_level:-0}
 468         test $level = 0 && continue
 469         eval level=$(($level-1))
 470         eval $pvar="\${${pvar}_${level}}"
 471         eval ${pvar}_level=$level
 472         eval unset ${pvar}_${level}
 473     done
 474 }
 475
 476 enable(){
 477     set_all yes $*
 478 }
 479
 480 disable(){
 481     set_all no $*
 482 }
 483
 484 enable_weak(){
 485     set_weak yes $*
 486 }
 487
 488 disable_weak(){
 489     set_weak no $*
 490 }
 491
 492 enable_safe(){
 493     for var; do
 494         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 495     done
 496 }
 497
 498 disable_safe(){
 499     for var; do
 500         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 501     done
 502 }
 503
 504 do_enable_deep(){
 505     for var; do
 506         enabled $var && continue
 507         eval sel="\$${var}_select"
 508         eval sgs="\$${var}_suggest"
 509         pushvar var sgs
 510         enable_deep $sel
 511         popvar sgs
 512         enable_deep_weak $sgs
 513         popvar var
 514     done
 515 }
 516
 517 enable_deep(){
 518     do_enable_deep $*
 519     enable $*
 520 }
 521
 522 enable_deep_weak(){
 523     for var; do
 524         disabled $var && continue
 525         pushvar var
 526         do_enable_deep $var
 527         popvar var
 528         enable_weak $var
 529     done
 530 }
 531
 532 enabled(){
 533     test "${1#!}" = "$1" && op== || op=!=
 534     eval test "x\$${1#!}" $op "xyes"
 535 }
 536
 537 disabled(){
 538     test "${1#!}" = "$1" && op== || op=!=
 539     eval test "x\$${1#!}" $op "xno"
 540 }
 541
 542 enabled_all(){
 543     for opt; do
 544         enabled $opt || return 1
 545     done
 546 }
 547
 548 disabled_all(){
 549     for opt; do
 550         disabled $opt || return 1
 551     done
 552 }
 553
 554 enabled_any(){
 555     for opt; do
 556         enabled $opt && return 0
 557     done
 558 }
 559
 560 disabled_any(){
 561     for opt; do
 562         disabled $opt && return 0
 563     done
 564     return 1
 565 }
 566
 567 set_default(){
 568     for opt; do
 569         eval : \${$opt:=\$${opt}_default}
 570     done
 571 }
 572
 573 is_in(){
 574     value=$1
 575     shift
 576     for var in $*; do
 577         [ $var = $value ] && return 0
 578     done
 579     return 1
 580 }
 581
 582 do_check_deps(){
 583     for cfg; do
 584         cfg="${cfg#!}"
 585         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 586         disabled ${cfg}_checking && continue
 587         enable ${cfg}_checking
 588         append allopts $cfg
 589
 590         eval dep_all="\$${cfg}_deps"
 591         eval dep_any="\$${cfg}_deps_any"
 592         eval dep_sel="\$${cfg}_select"
 593         eval dep_sgs="\$${cfg}_suggest"
 594         eval dep_ifa="\$${cfg}_if"
 595         eval dep_ifn="\$${cfg}_if_any"
 596
 597         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 598         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 599         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 600
 601         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 602         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 603         enabled_all  $dep_all || disable $cfg
 604         enabled_any  $dep_any || disable $cfg
 605         disabled_any $dep_sel && disable $cfg
 606
 607         if enabled $cfg; then
 608             enable_deep $dep_sel
 609             enable_deep_weak $dep_sgs
 610         fi
 611
 612         disable ${cfg}_checking
 613     done
 614 }
 615
 616 check_deps(){
 617     unset allopts
 618
 619     do_check_deps "$@"
 620
 621     for cfg in $allopts; do
 622         enabled $cfg || continue
 623         eval dep_extralibs="\$${cfg}_extralibs"
 624         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 625     done
 626 }
 627
 628 print_config(){
 629     pfx=$1
 630     files=$2
 631     shift 2
 632     map 'eval echo "$v \${$v:-no}"' "$@" |
 633     awk "BEGIN { split(\"$files\", files) }
 634         {
 635             c = \"$pfx\" toupper(\$1);
 636             v = \$2;
 637             sub(/yes/, 1, v);
 638             sub(/no/,  0, v);
 639             for (f in files) {
 640                 file = files[f];
 641                 if (file ~ /\\.h\$/) {
 642                     printf(\"#define %s %d\\n\", c, v) >>file;
 643                 } else if (file ~ /\\.asm\$/) {
 644                     printf(\"%%define %s %d\\n\", c, v) >>file;
 645                 } else if (file ~ /\\.mak\$/) {
 646                     n = -v ? \"\" : \"!\";
 647                     printf(\"%s%s=yes\\n\", n, c) >>file;
 648                 }
 649             }
 650         }"
 651 }
 652
 653 print_enabled(){
 654     suf=$1
 655     shift
 656     for v; do
 657         enabled $v && printf "%s\n" ${v%$suf};
 658     done
 659 }
 660
 661 append(){
 662     var=$1
 663     shift
 664     eval "$var=\"\$$var $*\""
 665 }
 666
 667 prepend(){
 668     var=$1
 669     shift
 670     eval "$var=\"$* \$$var\""
 671 }
 672
 673 unique(){
 674     var=$1
 675     uniq_list=""
 676     for tok in $(eval echo \$$var); do
 677         uniq_list="$(filter_out $tok $uniq_list) $tok"
 678     done
 679     eval "$var=\"${uniq_list}\""
 680 }
 681
 682 add_cppflags(){
 683     append CPPFLAGS "$@"
 684 }
 685
 686 add_cflags(){
 687     append CFLAGS $($cflags_filter "$@")
 688 }
 689
 690 add_asflags(){
 691     append ASFLAGS $($asflags_filter "$@")
 692 }
 693
 694 add_ldflags(){
 695     append LDFLAGS $($ldflags_filter "$@")
 696 }
 697
 698 add_ldexeflags(){
 699     append LDEXEFLAGS $($ldflags_filter "$@")
 700 }
 701
 702 add_stripflags(){
 703     append STRIPFLAGS "$@"
 704 }
 705
 706 add_extralibs(){
 707     prepend extralibs $($ldflags_filter "$@")
 708 }
 709
 710 add_host_cppflags(){
 711     append host_cppflags "$@"
 712 }
 713
 714 add_host_cflags(){
 715     append host_cflags $($host_cflags_filter "$@")
 716 }
 717
 718 add_host_ldflags(){
 719     append host_ldflags $($host_ldflags_filter "$@")
 720 }
 721
 722 add_compat(){
 723     append compat_objs $1
 724     shift
 725     map 'add_cppflags -D$v' "$@"
 726 }
 727
 728 check_cmd(){
 729     log "$@"
 730     "$@" >> $logfile 2>&1
 731 }
 732
 733 cc_o(){
 734     eval printf '%s\\n' $CC_O
 735 }
 736
 737 cc_e(){
 738     eval printf '%s\\n' $CC_E
 739 }
 740
 741 check_cc(){
 742     log check_cc "$@"
 743     cat > $TMPC
 744     log_file $TMPC
 745     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 746 }
 747
 748 check_cpp(){
 749     log check_cpp "$@"
 750     cat > $TMPC
 751     log_file $TMPC
 752     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 753 }
 754
 755 as_o(){
 756     eval printf '%s\\n' $AS_O
 757 }
 758
 759 check_as(){
 760     log check_as "$@"
 761     cat > $TMPS
 762     log_file $TMPS
 763     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 764 }
 765
 766 check_inline_asm(){
 767     log check_inline_asm "$@"
 768     name="$1"
 769     code="$2"
 770     shift 2
 771     disable $name
 772     check_cc "$@" <<EOF && enable $name
 773 void foo(void){ __asm__ volatile($code); }
 774 EOF
 775 }
 776
 777 check_insn(){
 778     log check_insn "$@"
 779     check_inline_asm ${1}_inline "\"$2\""
 780     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 781 }
 782
 783 check_yasm(){
 784     log check_yasm "$@"
 785     echo "$1" > $TMPS
 786     log_file $TMPS
 787     shift 1
 788     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 789 }
 790
 791 ld_o(){
 792     eval printf '%s\\n' $LD_O
 793 }
 794
 795 check_ld(){
 796     log check_ld "$@"
 797     flags=$(filter_out '-l*' "$@")
 798     libs=$(filter '-l*' "$@")
 799     check_cc $($cflags_filter $flags) || return
 800     flags=$($ldflags_filter $flags)
 801     libs=$($ldflags_filter $libs)
 802     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 803 }
 804
 805 print_include(){
 806     hdr=$1
 807     test "${hdr%.h}" = "${hdr}" &&
 808         echo "#include $hdr"    ||
 809         echo "#include <$hdr>"
 810 }
 811
 812 check_code(){
 813     log check_code "$@"
 814     check=$1
 815     headers=$2
 816     code=$3
 817     shift 3
 818     {
 819         for hdr in $headers; do
 820             print_include $hdr
 821         done
 822         echo "int main(void) { $code; return 0; }"
 823     } | check_$check "$@"
 824 }
 825
 826 check_cppflags(){
 827     log check_cppflags "$@"
 828     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 829 int x;
 830 EOF
 831 }
 832
 833 test_cflags(){
 834     log test_cflags "$@"
 835     set -- $($cflags_filter "$@")
 836     check_cc "$@" <<EOF
 837 int x;
 838 EOF
 839 }
 840
 841 check_cflags(){
 842     log check_cflags "$@"
 843     test_cflags "$@" && add_cflags "$@"
 844 }
 845
 846 test_ldflags(){
 847     log test_ldflags "$@"
 848     check_ld "$@" <<EOF
 849 int main(void){ return 0; }
 850 EOF
 851 }
 852
 853 check_ldflags(){
 854     log check_ldflags "$@"
 855     test_ldflags "$@" && add_ldflags "$@"
 856 }
 857
 858 test_stripflags(){
 859     log test_stripflags "$@"
 860     # call check_cc to get a fresh TMPO
 861     check_cc <<EOF
 862 int main(void) { return 0; }
 863 EOF
 864     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 865 }
 866
 867 check_stripflags(){
 868     log check_stripflags "$@"
 869     test_stripflags "$@" && add_stripflags "$@"
 870 }
 871
 872 check_header(){
 873     log check_header "$@"
 874     header=$1
 875     shift
 876     disable_safe $header
 877     check_cpp "$@" <<EOF && enable_safe $header
 878 #include <$header>
 879 int x;
 880 EOF
 881 }
 882
 883 check_func(){
 884     log check_func "$@"
 885     func=$1
 886     shift
 887     disable $func
 888     check_ld "$@" <<EOF && enable $func
 889 extern int $func();
 890 int main(void){ $func(); }
 891 EOF
 892 }
 893
 894 check_mathfunc(){
 895     log check_mathfunc "$@"
 896     func=$1
 897     narg=$2
 898     shift 2
 899     test $narg = 2 && args="f, g" || args="f"
 900     disable $func
 901     check_ld "$@" <<EOF && enable $func
 902 #include <math.h>
 903 float foo(float f, float g) { return $func($args); }
 904 int main(void){ return 0; }
 905 EOF
 906 }
 907
 908 check_func_headers(){
 909     log check_func_headers "$@"
 910     headers=$1
 911     funcs=$2
 912     shift 2
 913     {
 914         for hdr in $headers; do
 915             print_include $hdr
 916         done
 917         for func in $funcs; do
 918             echo "long check_$func(void) { return (long) $func; }"
 919         done
 920         echo "int main(void) { return 0; }"
 921     } | check_ld "$@" && enable $funcs && enable_safe $headers
 922 }
 923
 924 check_cpp_condition(){
 925     log check_cpp_condition "$@"
 926     header=$1
 927     condition=$2
 928     shift 2
 929     check_cpp "$@" <<EOF
 930 #include <$header>
 931 #if !($condition)
 932 #error "unsatisfied condition: $condition"
 933 #endif
 934 EOF
 935 }
 936
 937 check_lib(){
 938     log check_lib "$@"
 939     header="$1"
 940     func="$2"
 941     shift 2
 942     check_header $header && check_func $func "$@" && add_extralibs "$@"
 943 }
 944
 945 check_lib2(){
 946     log check_lib2 "$@"
 947     headers="$1"
 948     funcs="$2"
 949     shift 2
 950     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 951 }
 952
 953 check_pkg_config(){
 954     log check_pkg_config "$@"
 955     pkg="$1"
 956     headers="$2"
 957     funcs="$3"
 958     shift 3
 959     check_cmd $pkg_config --exists --print-errors $pkg || return
 960     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
 961     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
 962     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 963         set_safe "${pkg}_cflags" $pkg_cflags   &&
 964         set_safe "${pkg}_libs"   $pkg_libs
 965 }
 966
 967 check_exec(){
 968     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 969 }
 970
 971 check_exec_crash(){
 972     code=$(cat)
 973
 974     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 975     # are safe but may not be available everywhere.  Thus we use
 976     # raise(SIGTERM) instead.  The check is run in a subshell so we
 977     # can redirect the "Terminated" message from the shell.  SIGBUS
 978     # is not defined by standard C so it is used conditionally.
 979
 980     (check_exec "$@") >> $logfile 2>&1 <<EOF
 981 #include <signal.h>
 982 static void sighandler(int sig){
 983     raise(SIGTERM);
 984 }
 985 int foo(void){
 986     $code
 987 }
 988 int (*func_ptr)(void) = foo;
 989 int main(void){
 990     signal(SIGILL, sighandler);
 991     signal(SIGFPE, sighandler);
 992     signal(SIGSEGV, sighandler);
 993 #ifdef SIGBUS
 994     signal(SIGBUS, sighandler);
 995 #endif
 996     return func_ptr();
 997 }
 998 EOF
 999 }
1000
1001 check_type(){
1002     log check_type "$@"
1003     headers=$1
1004     type=$2
1005     shift 2
1006     disable_safe "$type"
1007     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1008 }
1009
1010 check_struct(){
1011     log check_struct "$@"
1012     headers=$1
1013     struct=$2
1014     member=$3
1015     shift 3
1016     disable_safe "${struct}_${member}"
1017     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1018         enable_safe "${struct}_${member}"
1019 }
1020
1021 check_builtin(){
1022     log check_builtin "$@"
1023     name=$1
1024     headers=$2
1025     builtin=$3
1026     shift 3
1027     disable "$name"
1028     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1029 }
1030
1031 check_compile_assert(){
1032     log check_compile_assert "$@"
1033     name=$1
1034     headers=$2
1035     condition=$3
1036     shift 3
1037     disable "$name"
1038     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1039 }
1040
1041 require(){
1042     name="$1"
1043     header="$2"
1044     func="$3"
1045     shift 3
1046     check_lib $header $func "$@" || die "ERROR: $name not found"
1047 }
1048
1049 require2(){
1050     name="$1"
1051     headers="$2"
1052     func="$3"
1053     shift 3
1054     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1055 }
1056
1057 require_pkg_config(){
1058     pkg="$1"
1059     check_pkg_config "$@" || die "ERROR: $pkg not found"
1060     add_cflags    $(get_safe "${pkg}_cflags")
1061     add_extralibs $(get_safe "${pkg}_libs")
1062 }
1063
1064 hostcc_e(){
1065     eval printf '%s\\n' $HOSTCC_E
1066 }
1067
1068 hostcc_o(){
1069     eval printf '%s\\n' $HOSTCC_O
1070 }
1071
1072 check_host_cc(){
1073     log check_host_cc "$@"
1074     cat > $TMPC
1075     log_file $TMPC
1076     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1077 }
1078
1079 check_host_cpp(){
1080     log check_host_cpp "$@"
1081     cat > $TMPC
1082     log_file $TMPC
1083     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1084 }
1085
1086 check_host_cppflags(){
1087     log check_host_cppflags "$@"
1088     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1089 int x;
1090 EOF
1091 }
1092
1093 check_host_cflags(){
1094     log check_host_cflags "$@"
1095     set -- $($host_cflags_filter "$@")
1096     check_host_cc "$@" <<EOF && append host_cflags "$@"
1097 int x;
1098 EOF
1099 }
1100
1101 check_host_cpp_condition(){
1102     log check_host_cpp_condition "$@"
1103     header=$1
1104     condition=$2
1105     shift 2
1106     check_host_cpp "$@" <<EOF
1107 #include <$header>
1108 #if !($condition)
1109 #error "unsatisfied condition: $condition"
1110 #endif
1111 EOF
1112 }
1113
1114 apply(){
1115     file=$1
1116     shift
1117     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1118 }
1119
1120 cp_if_changed(){
1121     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1122     mkdir -p "$(dirname $2)"
1123     $cp_f "$1" "$2"
1124 }
1125
1126 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1127 # system-dependent things.
1128
1129 COMPONENT_LIST="
1130     bsfs
1131     decoders
1132     demuxers
1133     encoders
1134     filters
1135     hwaccels
1136     indevs
1137     muxers
1138     outdevs
1139     parsers
1140     protocols
1141 "
1142
1143 EXAMPLE_LIST="
1144     avcodec_example
1145     filter_audio_example
1146     metadata_example
1147     output_example
1148     qsvdec_example
1149     transcode_aac_example
1150 "
1151
1152 EXTERNAL_LIBRARY_LIST="
1153     avisynth
1154     bzlib
1155     frei0r
1156     gnutls
1157     libbs2b
1158     libcdio
1159     libdc1394
1160     libdcadec
1161     libfaac
1162     libfdk_aac
1163     libfontconfig
1164     libfreetype
1165     libgsm
1166     libilbc
1167     libmfx
1168     libmp3lame
1169     libopencore_amrnb
1170     libopencore_amrwb
1171     libopencv
1172     libopenh264
1173     libopenjpeg
1174     libopus
1175     libpulse
1176     librtmp
1177     libschroedinger
1178     libspeex
1179     libtheora
1180     libtwolame
1181     libvo_aacenc
1182     libvo_amrwbenc
1183     libvorbis
1184     libvpx
1185     libwavpack
1186     libwebp
1187     libx264
1188     libx265
1189     libxavs
1190     libxcb
1191     libxcb_shm
1192     libxcb_xfixes
1193     libxvid
1194     mmal
1195     nvenc
1196     openssl
1197     x11grab
1198     zlib
1199 "
1200
1201 FEATURE_LIST="
1202     gray
1203     hardcoded_tables
1204     runtime_cpudetect
1205     safe_bitstream_reader
1206     shared
1207     small
1208     sram
1209     static
1210     swscale_alpha
1211 "
1212
1213 HWACCEL_LIST="
1214     d3d11va
1215     dxva2
1216     vaapi
1217     vda
1218     vdpau
1219 "
1220
1221 LIBRARY_LIST="
1222     avcodec
1223     avdevice
1224     avfilter
1225     avformat
1226     avresample
1227     avutil
1228     swscale
1229 "
1230
1231 LICENSE_LIST="
1232     gpl
1233     nonfree
1234     version3
1235 "
1236
1237 PROGRAM_LIST="
1238     avconv
1239     avplay
1240     avprobe
1241 "
1242
1243 SUBSYSTEM_LIST="
1244     dct
1245     doc
1246     error_resilience
1247     faan
1248     fft
1249     lsp
1250     lzo
1251     mdct
1252     network
1253     rdft
1254 "
1255
1256 CONFIG_LIST="
1257     $COMPONENT_LIST
1258     $EXAMPLE_LIST
1259     $EXTERNAL_LIBRARY_LIST
1260     $FEATURE_LIST
1261     $HWACCEL_LIST
1262     $LICENSE_LIST
1263     $LIBRARY_LIST
1264     $PROGRAM_LIST
1265     $SUBSYSTEM_LIST
1266     memalign_hack
1267     neon_clobber_test
1268     pic
1269     pod2man
1270     texi2html
1271     thumb
1272     valgrind_backtrace
1273     xmm_clobber_test
1274 "
1275
1276 THREADS_LIST="
1277     pthreads
1278     w32threads
1279 "
1280
1281 ATOMICS_LIST="
1282     atomics_gcc
1283     atomics_suncc
1284     atomics_win32
1285 "
1286
1287 ARCH_LIST="
1288     aarch64
1289     alpha
1290     arm
1291     avr32
1292     avr32_ap
1293     avr32_uc
1294     bfin
1295     ia64
1296     m68k
1297     mips
1298     mips64
1299     parisc
1300     ppc
1301     ppc64
1302     s390
1303     sh4
1304     sparc
1305     sparc64
1306     tilegx
1307     tilepro
1308     tomi
1309     x86
1310     x86_32
1311     x86_64
1312 "
1313
1314 ARCH_EXT_LIST_ARM="
1315     armv5te
1316     armv6
1317     armv6t2
1318     armv8
1319     neon
1320     vfp
1321     vfpv3
1322 "
1323
1324 ARCH_EXT_LIST_X86_SIMD="
1325     amd3dnow
1326     amd3dnowext
1327     avx
1328     avx2
1329     fma3
1330     fma4
1331     mmx
1332     mmxext
1333     sse
1334     sse2
1335     sse3
1336     sse4
1337     sse42
1338     ssse3
1339     xop
1340 "
1341
1342 ARCH_EXT_LIST_PPC="
1343     altivec
1344     dcbzl
1345     ldbrx
1346     power8
1347     ppc4xx
1348     vsx
1349 "
1350
1351 ARCH_EXT_LIST_X86="
1352     $ARCH_EXT_LIST_X86_SIMD
1353     cpunop
1354     i686
1355 "
1356
1357 ARCH_EXT_LIST="
1358     $ARCH_EXT_LIST_ARM
1359     $ARCH_EXT_LIST_PPC
1360     $ARCH_EXT_LIST_X86
1361     loongson
1362     vis
1363 "
1364
1365 ARCH_FEATURES="
1366     aligned_stack
1367     fast_64bit
1368     fast_clz
1369     fast_cmov
1370     local_aligned_8
1371     local_aligned_16
1372     simd_align_16
1373 "
1374
1375 BUILTIN_LIST="
1376     atomic_cas_ptr
1377     machine_rw_barrier
1378     MemoryBarrier
1379     mm_empty
1380     rdtsc
1381     sync_val_compare_and_swap
1382 "
1383 HAVE_LIST_CMDLINE="
1384     inline_asm
1385     symver
1386     yasm
1387 "
1388
1389 HAVE_LIST_PUB="
1390     bigendian
1391     fast_unaligned
1392 "
1393
1394 HEADERS_LIST="
1395     alsa_asoundlib_h
1396     altivec_h
1397     arpa_inet_h
1398     cdio_paranoia_h
1399     cdio_paranoia_paranoia_h
1400     dev_bktr_ioctl_bt848_h
1401     dev_bktr_ioctl_meteor_h
1402     dev_ic_bt8xx_h
1403     dev_video_bktr_ioctl_bt848_h
1404     dev_video_meteor_ioctl_meteor_h
1405     direct_h
1406     dlfcn_h
1407     d3d11_h
1408     dxva_h
1409     gsm_h
1410     io_h
1411     mach_mach_time_h
1412     machine_ioctl_bt848_h
1413     machine_ioctl_meteor_h
1414     malloc_h
1415     poll_h
1416     sndio_h
1417     soundcard_h
1418     sys_mman_h
1419     sys_param_h
1420     sys_resource_h
1421     sys_select_h
1422     sys_soundcard_h
1423     sys_time_h
1424     sys_un_h
1425     sys_videoio_h
1426     unistd_h
1427     valgrind_valgrind_h
1428     windows_h
1429     winsock2_h
1430 "
1431
1432 INTRINSICS_LIST="
1433     intrinsics_neon
1434 "
1435
1436 MATH_FUNCS="
1437     atanf
1438     atan2f
1439     cbrtf
1440     cosf
1441     exp2
1442     exp2f
1443     expf
1444     isinf
1445     isnan
1446     ldexpf
1447     llrint
1448     llrintf
1449     log2
1450     log2f
1451     log10f
1452     lrint
1453     lrintf
1454     powf
1455     rint
1456     round
1457     roundf
1458     sinf
1459     trunc
1460     truncf
1461 "
1462
1463 SYSTEM_FUNCS="
1464     aligned_malloc
1465     clock_gettime
1466     closesocket
1467     CommandLineToArgvW
1468     CoTaskMemFree
1469     CryptGenRandom
1470     dlopen
1471     fcntl
1472     flt_lim
1473     fork
1474     getaddrinfo
1475     gethrtime
1476     getopt
1477     GetProcessAffinityMask
1478     GetProcessMemoryInfo
1479     GetProcessTimes
1480     getrusage
1481     getservbyport
1482     GetSystemTimeAsFileTime
1483     gettimeofday
1484     gmtime_r
1485     inet_aton
1486     isatty
1487     jack_port_get_latency_range
1488     LoadLibrary
1489     localtime_r
1490     mach_absolute_time
1491     MapViewOfFile
1492     memalign
1493     mkstemp
1494     mmap
1495     mprotect
1496     nanosleep
1497     posix_memalign
1498     sched_getaffinity
1499     SetConsoleTextAttribute
1500     setmode
1501     setrlimit
1502     Sleep
1503     strerror_r
1504     sysconf
1505     sysctl
1506     usleep
1507     VirtualAlloc
1508 "
1509
1510 TOOLCHAIN_FEATURES="
1511     as_dn_directive
1512     as_func
1513     as_object_arch
1514     asm_mod_q
1515     attribute_may_alias
1516     attribute_packed
1517     ebp_available
1518     ebx_available
1519     gnu_as
1520     ibm_asm
1521     inline_asm_labels
1522     pragma_deprecated
1523     symver_asm_label
1524     symver_gnu_asm
1525     vfp_args
1526     xform_asm
1527     xmm_clobbers
1528 "
1529
1530 TYPES_LIST="
1531     CONDITION_VARIABLE_Ptr
1532     socklen_t
1533     struct_addrinfo
1534     struct_group_source_req
1535     struct_ip_mreq_source
1536     struct_ipv6_mreq
1537     struct_pollfd
1538     struct_rusage_ru_maxrss
1539     struct_sockaddr_in6
1540     struct_sockaddr_sa_len
1541     struct_sockaddr_storage
1542     struct_v4l2_frmivalenum_discrete
1543 "
1544
1545 HAVE_LIST="
1546     $ARCH_EXT_LIST
1547     $(add_suffix _external $ARCH_EXT_LIST)
1548     $(add_suffix _inline   $ARCH_EXT_LIST)
1549     $ARCH_FEATURES
1550     $ATOMICS_LIST
1551     $BUILTIN_LIST
1552     $HAVE_LIST_CMDLINE
1553     $HAVE_LIST_PUB
1554     $HEADERS_LIST
1555     $INTRINSICS_LIST
1556     $MATH_FUNCS
1557     $SYSTEM_FUNCS
1558     $THREADS_LIST
1559     $TOOLCHAIN_FEATURES
1560     $TYPES_LIST
1561     atomics_native
1562     dos_paths
1563     d3d11_cobj
1564     d3d11va_lib
1565     dxva2_lib
1566     libc_msvcrt
1567     libdc1394_1
1568     libdc1394_2
1569     sdl
1570     section_data_rel_ro
1571     threads
1572     vaapi_x11
1573     vdpau_x11
1574     xlib
1575 "
1576
1577 # options emitted with CONFIG_ prefix but not available on the command line
1578 CONFIG_EXTRA="
1579     aandcttables
1580     ac3dsp
1581     audio_frame_queue
1582     audiodsp
1583     blockdsp
1584     bswapdsp
1585     cabac
1586     dvprofile
1587     faandct
1588     faanidct
1589     fdctdsp
1590     fmtconvert
1591     gcrypt
1592     gmp
1593     golomb
1594     gplv3
1595     h263dsp
1596     h264chroma
1597     h264dsp
1598     h264pred
1599     h264qpel
1600     hpeldsp
1601     huffman
1602     huffyuvdsp
1603     huffyuvencdsp
1604     idctdsp
1605     iirfilter
1606     imdct15
1607     intrax8
1608     jpegtables
1609     lgplv3
1610     lpc
1611     me_cmp
1612     mpeg_er
1613     mpegaudio
1614     mpegaudiodsp
1615     mpegvideo
1616     mpegvideoenc
1617     pixblockdsp
1618     qpeldsp
1619     qsv
1620     qsvdec
1621     qsvenc
1622     rangecoder
1623     riffdec
1624     riffenc
1625     rtpdec
1626     rtpenc_chain
1627     sinewin
1628     startcode
1629     tpeldsp
1630     videodsp
1631     vp3dsp
1632     wma_freqs
1633 "
1634
1635 CMDLINE_SELECT="
1636     $ARCH_EXT_LIST
1637     $CONFIG_LIST
1638     $HAVE_LIST_CMDLINE
1639     $THREADS_LIST
1640     asm
1641     cross_compile
1642     debug
1643     extra_warnings
1644     logging
1645     lto
1646     optimizations
1647     rpath
1648 "
1649
1650 PATHS_LIST="
1651     bindir
1652     datadir
1653     docdir
1654     incdir
1655     libdir
1656     mandir
1657     prefix
1658     shlibdir
1659 "
1660
1661 CMDLINE_SET="
1662     $PATHS_LIST
1663     ar
1664     arch
1665     as
1666     build_suffix
1667     cc
1668     cpu
1669     cross_prefix
1670     dep_cc
1671     extra_version
1672     host_cc
1673     host_cflags
1674     host_ld
1675     host_ldflags
1676     host_libs
1677     host_os
1678     ld
1679     logfile
1680     malloc_prefix
1681     nm
1682     optflags
1683     pkg_config
1684     pkg_config_flags
1685     random_seed
1686     samples
1687     sysinclude
1688     sysroot
1689     target_exec
1690     target_os
1691     target_path
1692     target_samples
1693     toolchain
1694 "
1695
1696 CMDLINE_APPEND="
1697     extra_cflags
1698     host_cppflags
1699 "
1700
1701 # code dependency declarations
1702
1703 # architecture extensions
1704
1705 armv5te_deps="arm"
1706 armv6_deps="arm"
1707 armv6t2_deps="arm"
1708 armv8_deps="aarch64"
1709 neon_deps_any="aarch64 arm"
1710 intrinsics_neon_deps="neon"
1711 vfp_deps_any="aarch64 arm"
1712 vfpv3_deps="vfp"
1713
1714 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1715
1716 altivec_deps="ppc"
1717 ppc4xx_deps="ppc"
1718 vsx_deps="altivec"
1719 power8_deps="vsx"
1720
1721 cpunop_deps="i686"
1722 x86_64_select="i686"
1723 x86_64_suggest="fast_cmov"
1724
1725 amd3dnow_deps="mmx"
1726 amd3dnowext_deps="amd3dnow"
1727 i686_deps="x86"
1728 mmx_deps="x86"
1729 mmxext_deps="mmx"
1730 sse_deps="mmxext"
1731 sse2_deps="sse"
1732 sse3_deps="sse2"
1733 ssse3_deps="sse3"
1734 sse4_deps="ssse3"
1735 sse42_deps="sse4"
1736 avx_deps="sse42"
1737 xop_deps="avx"
1738 fma3_deps="avx"
1739 fma4_deps="avx"
1740 avx2_deps="avx"
1741
1742 mmx_external_deps="yasm"
1743 mmx_inline_deps="inline_asm"
1744 mmx_suggest="mmx_external mmx_inline"
1745
1746 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1747     eval dep=\$${ext}_deps
1748     eval ${ext}_external_deps='"${dep}_external"'
1749     eval ${ext}_inline_deps='"${dep}_inline"'
1750     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1751 done
1752
1753 aligned_stack_if_any="aarch64 ppc x86"
1754 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1755 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1756 fast_unaligned_if_any="aarch64 ppc x86"
1757 simd_align_16_if_any="altivec neon sse"
1758
1759 # system capabilities
1760 symver_if_any="symver_asm_label symver_gnu_asm"
1761 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1762
1763 # threading support
1764 atomics_gcc_if="sync_val_compare_and_swap"
1765 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1766 atomics_win32_if="MemoryBarrier"
1767 atomics_native_if_any="$ATOMICS_LIST"
1768 w32threads_deps="atomics_native"
1769 threads_if_any="$THREADS_LIST"
1770
1771 # subsystems
1772 dct_select="rdft"
1773 error_resilience_select="me_cmp"
1774 faandct_deps="faan fdctdsp"
1775 faanidct_deps="faan idctdsp"
1776 intrax8_select="error_resilience"
1777 mdct_select="fft"
1778 rdft_select="fft"
1779 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1780 mpeg_er_select="error_resilience"
1781 mpegaudio_select="mpegaudiodsp"
1782 mpegaudiodsp_select="dct"
1783 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1784 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1785 nvenc_deps_any="dlopen LoadLibrary"
1786 nvenc_extralibs='$ldl'
1787 qsvdec_select="qsv"
1788 qsvenc_select="qsv"
1789
1790 # decoders / encoders
1791 aac_decoder_select="imdct15 mdct sinewin"
1792 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1793 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1794 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1795 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1796 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1797 aic_decoder_select="golomb idctdsp"
1798 alac_encoder_select="lpc"
1799 als_decoder_select="bswapdsp"
1800 amrnb_decoder_select="lsp"
1801 amrwb_decoder_select="lsp"
1802 amv_decoder_select="sp5x_decoder"
1803 ape_decoder_select="bswapdsp"
1804 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1805 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1806 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1807 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1808 atrac1_decoder_select="mdct sinewin"
1809 atrac3_decoder_select="mdct"
1810 atrac3p_decoder_select="mdct sinewin"
1811 bink_decoder_select="blockdsp hpeldsp"
1812 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1813 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1814 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1815 cllc_decoder_select="bswapdsp"
1816 comfortnoise_encoder_select="lpc"
1817 cook_decoder_select="audiodsp mdct sinewin"
1818 cscd_decoder_select="lzo"
1819 cscd_decoder_suggest="zlib"
1820 dca_decoder_select="fmtconvert mdct"
1821 dnxhd_decoder_select="blockdsp idctdsp"
1822 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1823 dvvideo_decoder_select="dvprofile idctdsp"
1824 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1825 dxa_decoder_deps="zlib"
1826 eac3_decoder_select="ac3_decoder"
1827 eac3_encoder_select="ac3_encoder"
1828 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1829 eatgq_decoder_select="aandcttables idctdsp"
1830 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1831 exr_decoder_deps="zlib"
1832 ffv1_decoder_select="golomb rangecoder"
1833 ffv1_encoder_select="rangecoder"
1834 ffvhuff_decoder_select="huffyuv_decoder"
1835 ffvhuff_encoder_select="huffyuv_encoder"
1836 fic_decoder_select="golomb"
1837 flac_decoder_select="golomb"
1838 flac_encoder_select="bswapdsp golomb lpc"
1839 flashsv_decoder_deps="zlib"
1840 flashsv_encoder_deps="zlib"
1841 flashsv2_decoder_deps="zlib"
1842 flv_decoder_select="h263_decoder"
1843 flv_encoder_select="h263_encoder"
1844 fourxm_decoder_select="blockdsp bswapdsp"
1845 fraps_decoder_select="bswapdsp huffman"
1846 g2m_decoder_deps="zlib"
1847 g2m_decoder_select="blockdsp idctdsp jpegtables"
1848 h261_decoder_select="mpeg_er mpegvideo"
1849 h261_encoder_select="aandcttables mpegvideoenc"
1850 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1851 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1852 h263i_decoder_select="h263_decoder"
1853 h263p_encoder_select="h263_encoder"
1854 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1855 h264_decoder_suggest="error_resilience"
1856 h264_nvenc_encoder_deps="nvenc"
1857 h264_qsv_decoder_deps="libmfx"
1858 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1859 h264_qsv_encoder_deps="libmfx"
1860 h264_qsv_encoder_select="qsvenc"
1861 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1862 hevc_nvenc_encoder_deps="nvenc"
1863 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1864 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1865 iac_decoder_select="imc_decoder"
1866 imc_decoder_select="bswapdsp fft mdct sinewin"
1867 indeo3_decoder_select="hpeldsp"
1868 interplay_video_decoder_select="hpeldsp"
1869 jpegls_decoder_select="golomb mjpeg_decoder"
1870 jpegls_encoder_select="golomb"
1871 jv_decoder_select="blockdsp"
1872 lagarith_decoder_select="huffyuvdsp"
1873 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1874 loco_decoder_select="golomb"
1875 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1876 metasound_decoder_select="lsp mdct sinewin"
1877 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1878 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1879 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1880 mjpegb_decoder_select="mjpeg_decoder"
1881 mlp_decoder_select="mlp_parser"
1882 motionpixels_decoder_select="bswapdsp"
1883 mp1_decoder_select="mpegaudio"
1884 mp1float_decoder_select="mpegaudio"
1885 mp2_decoder_select="mpegaudio"
1886 mp2float_decoder_select="mpegaudio"
1887 mp3_decoder_select="mpegaudio"
1888 mp3adu_decoder_select="mpegaudio"
1889 mp3adufloat_decoder_select="mpegaudio"
1890 mp3float_decoder_select="mpegaudio"
1891 mp3on4_decoder_select="mpegaudio"
1892 mp3on4float_decoder_select="mpegaudio"
1893 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1894 mpc8_decoder_select="mpegaudiodsp"
1895 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1896 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1897 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1898 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1899 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1900 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1901 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1902 mpeg4_encoder_select="h263_encoder"
1903 msmpeg4v1_decoder_select="h263_decoder"
1904 msmpeg4v2_decoder_select="h263_decoder"
1905 msmpeg4v2_encoder_select="h263_encoder"
1906 msmpeg4v3_decoder_select="h263_decoder"
1907 msmpeg4v3_encoder_select="h263_encoder"
1908 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1909 mxpeg_decoder_select="mjpeg_decoder"
1910 nellymoser_decoder_select="mdct sinewin"
1911 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1912 nuv_decoder_select="idctdsp lzo"
1913 on2avc_decoder_select="mdct"
1914 opus_decoder_deps="avresample"
1915 opus_decoder_select="imdct15"
1916 png_decoder_deps="zlib"
1917 png_encoder_deps="zlib"
1918 png_encoder_select="huffyuvencdsp"
1919 prores_decoder_select="idctdsp"
1920 prores_encoder_select="fdctdsp"
1921 qcelp_decoder_select="lsp"
1922 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1923 ra_144_encoder_select="audio_frame_queue lpc"
1924 ralf_decoder_select="golomb"
1925 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1926 rv10_encoder_select="h263_encoder"
1927 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1928 rv20_encoder_select="h263_encoder"
1929 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1930 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1931 shorten_decoder_select="golomb"
1932 sipr_decoder_select="lsp"
1933 sp5x_decoder_select="mjpeg_decoder"
1934 svq1_decoder_select="hpeldsp"
1935 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1936 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1937 svq3_decoder_suggest="zlib"
1938 tak_decoder_select="audiodsp"
1939 tdsc_decoder_deps="zlib"
1940 tdsc_decoder_select="mjpeg_decoder"
1941 theora_decoder_select="vp3_decoder"
1942 thp_decoder_select="mjpeg_decoder"
1943 tiff_decoder_suggest="zlib"
1944 tiff_encoder_suggest="zlib"
1945 truehd_decoder_select="mlp_decoder"
1946 truemotion2_decoder_select="bswapdsp"
1947 truespeech_decoder_select="bswapdsp"
1948 tscc_decoder_deps="zlib"
1949 twinvq_decoder_select="mdct lsp sinewin"
1950 utvideo_decoder_select="bswapdsp"
1951 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1952 vble_decoder_select="huffyuvdsp"
1953 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1954 vc1image_decoder_select="vc1_decoder"
1955 vorbis_decoder_select="mdct"
1956 vorbis_encoder_select="mdct"
1957 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1958 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1959 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1960 vp6a_decoder_select="vp6_decoder"
1961 vp6f_decoder_select="vp6_decoder"
1962 vp7_decoder_select="h264pred videodsp"
1963 vp8_decoder_select="h264pred videodsp"
1964 vp9_decoder_select="videodsp"
1965 webp_decoder_select="vp8_decoder"
1966 wmapro_decoder_select="mdct sinewin wma_freqs"
1967 wmav1_decoder_select="mdct sinewin wma_freqs"
1968 wmav1_encoder_select="mdct sinewin wma_freqs"
1969 wmav2_decoder_select="mdct sinewin wma_freqs"
1970 wmav2_encoder_select="mdct sinewin wma_freqs"
1971 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1972 wmv1_decoder_select="h263_decoder"
1973 wmv1_encoder_select="h263_encoder"
1974 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1975 wmv2_encoder_select="h263_encoder"
1976 wmv3_decoder_select="vc1_decoder"
1977 wmv3image_decoder_select="wmv3_decoder"
1978 zerocodec_decoder_deps="zlib"
1979 zlib_decoder_deps="zlib"
1980 zlib_encoder_deps="zlib"
1981 zmbv_decoder_deps="zlib"
1982 zmbv_encoder_deps="zlib"
1983
1984 # hardware accelerators
1985 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
1986 dxva2_deps="dxva2api_h LPDIRECT3DSURFACE9"
1987 vaapi_deps="va_va_h"
1988 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1989 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1990 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1991
1992 h263_vaapi_hwaccel_deps="vaapi"
1993 h263_vaapi_hwaccel_select="h263_decoder"
1994 h263_vdpau_hwaccel_deps="vdpau"
1995 h263_vdpau_hwaccel_select="h263_decoder"
1996 h264_d3d11va_hwaccel_deps="d3d11va"
1997 h264_d3d11va_hwaccel_select="h264_decoder"
1998 h264_dxva2_hwaccel_deps="dxva2"
1999 h264_dxva2_hwaccel_select="h264_decoder"
2000 h264_mmal_decoder_deps="mmal"
2001 h264_mmal_hwaccel_deps="mmal"
2002 h264_mmal_decoder_select="h264_decoder"
2003 h264_mmal_encoder_deps="mmal"
2004 h264_qsv_hwaccel_deps="libmfx"
2005 h264_vaapi_hwaccel_deps="vaapi"
2006 h264_vaapi_hwaccel_select="h264_decoder"
2007 h264_vda_hwaccel_deps="vda"
2008 h264_vda_hwaccel_select="h264_decoder"
2009 h264_vda_old_hwaccel_deps="vda"
2010 h264_vda_old_hwaccel_select="h264_decoder"
2011 h264_vdpau_hwaccel_deps="vdpau"
2012 h264_vdpau_hwaccel_select="h264_decoder"
2013 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2014 hevc_d3d11va_hwaccel_select="hevc_decoder"
2015 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2016 hevc_dxva2_hwaccel_select="hevc_decoder"
2017 mpeg1_vdpau_hwaccel_deps="vdpau"
2018 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2019 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2020 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2021 mpeg2_dxva2_hwaccel_deps="dxva2"
2022 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2023 mpeg2_vaapi_hwaccel_deps="vaapi"
2024 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2025 mpeg2_vdpau_hwaccel_deps="vdpau"
2026 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2027 mpeg4_vaapi_hwaccel_deps="vaapi"
2028 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2029 mpeg4_vdpau_hwaccel_deps="vdpau"
2030 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2031 vc1_d3d11va_hwaccel_deps="d3d11va"
2032 vc1_d3d11va_hwaccel_select="vc1_decoder"
2033 vc1_dxva2_hwaccel_deps="dxva2"
2034 vc1_dxva2_hwaccel_select="vc1_decoder"
2035 vc1_vaapi_hwaccel_deps="vaapi"
2036 vc1_vaapi_hwaccel_select="vc1_decoder"
2037 vc1_vdpau_hwaccel_deps="vdpau"
2038 vc1_vdpau_hwaccel_select="vc1_decoder"
2039 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2040 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2041 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2042 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2043
2044 # parsers
2045 h264_parser_select="h264_decoder"
2046 mpegvideo_parser_select="mpegvideo"
2047 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2048 vc1_parser_select="mpegvideo startcode vc1_decoder"
2049
2050 # bitstream_filters
2051 mjpeg2jpeg_bsf_select="jpegtables"
2052
2053 # external libraries
2054 libdcadec_decoder_deps="libdcadec"
2055 libfaac_encoder_deps="libfaac"
2056 libfaac_encoder_select="audio_frame_queue"
2057 libfdk_aac_decoder_deps="libfdk_aac"
2058 libfdk_aac_encoder_deps="libfdk_aac"
2059 libfdk_aac_encoder_select="audio_frame_queue"
2060 libgsm_decoder_deps="libgsm"
2061 libgsm_encoder_deps="libgsm"
2062 libgsm_ms_decoder_deps="libgsm"
2063 libgsm_ms_encoder_deps="libgsm"
2064 libilbc_decoder_deps="libilbc"
2065 libilbc_encoder_deps="libilbc"
2066 libmp3lame_encoder_deps="libmp3lame"
2067 libmp3lame_encoder_select="audio_frame_queue"
2068 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2069 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2070 libopencore_amrnb_encoder_select="audio_frame_queue"
2071 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2072 libopenh264_encoder_deps="libopenh264"
2073 libopenjpeg_decoder_deps="libopenjpeg"
2074 libopenjpeg_encoder_deps="libopenjpeg"
2075 libopus_decoder_deps="libopus"
2076 libopus_encoder_deps="libopus"
2077 libopus_encoder_select="audio_frame_queue"
2078 libschroedinger_decoder_deps="libschroedinger"
2079 libschroedinger_encoder_deps="libschroedinger"
2080 libspeex_decoder_deps="libspeex"
2081 libspeex_encoder_deps="libspeex"
2082 libspeex_encoder_select="audio_frame_queue"
2083 libtheora_encoder_deps="libtheora"
2084 libtwolame_encoder_deps="libtwolame"
2085 libvo_aacenc_encoder_deps="libvo_aacenc"
2086 libvo_aacenc_encoder_select="audio_frame_queue"
2087 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2088 libvorbis_encoder_deps="libvorbis"
2089 libvorbis_encoder_select="audio_frame_queue"
2090 libvpx_vp8_decoder_deps="libvpx"
2091 libvpx_vp8_encoder_deps="libvpx"
2092 libvpx_vp9_decoder_deps="libvpx"
2093 libvpx_vp9_encoder_deps="libvpx"
2094 libwavpack_encoder_deps="libwavpack"
2095 libwebp_encoder_deps="libwebp"
2096 libx264_encoder_deps="libx264"
2097 libx265_encoder_deps="libx265"
2098 libxavs_encoder_deps="libxavs"
2099 libxvid_encoder_deps="libxvid"
2100
2101 # demuxers / muxers
2102 ac3_demuxer_select="ac3_parser"
2103 asf_demuxer_select="riffdec"
2104 asf_muxer_select="riffenc"
2105 asf_stream_muxer_select="asf_muxer"
2106 avi_demuxer_select="riffdec"
2107 avi_muxer_select="riffenc"
2108 avisynth_demuxer_deps="avisynth"
2109 avisynth_demuxer_select="riffdec"
2110 caf_demuxer_select="riffdec"
2111 dash_muxer_select="mp4_muxer"
2112 dirac_demuxer_select="dirac_parser"
2113 dv_demuxer_select="dvprofile"
2114 dv_muxer_select="dvprofile"
2115 dxa_demuxer_select="riffdec"
2116 eac3_demuxer_select="ac3_parser"
2117 f4v_muxer_select="mov_muxer"
2118 flac_demuxer_select="flac_parser"
2119 hds_muxer_select="flv_muxer"
2120 hls_muxer_select="mpegts_muxer"
2121 ipod_muxer_select="mov_muxer"
2122 ismv_muxer_select="mov_muxer"
2123 matroska_audio_muxer_select="matroska_muxer"
2124 matroska_demuxer_select="riffdec"
2125 matroska_demuxer_suggest="bzlib lzo zlib"
2126 matroska_muxer_select="riffenc"
2127 mmf_muxer_select="riffenc"
2128 mov_demuxer_select="riffdec"
2129 mov_demuxer_suggest="zlib"
2130 mov_muxer_select="riffenc rtpenc_chain"
2131 mp3_demuxer_select="mpegaudio_parser"
2132 mp4_muxer_select="mov_muxer"
2133 mpegts_muxer_select="adts_muxer latm_muxer"
2134 mpegtsraw_demuxer_select="mpegts_demuxer"
2135 mxf_d10_muxer_select="mxf_muxer"
2136 nut_muxer_select="riffenc"
2137 nuv_demuxer_select="riffdec"
2138 oga_muxer_select="ogg_muxer"
2139 ogg_demuxer_select="golomb"
2140 opus_muxer_select="ogg_muxer"
2141 psp_muxer_select="mov_muxer"
2142 rtp_demuxer_select="sdp_demuxer"
2143 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2144 rtsp_demuxer_select="http_protocol rtpdec"
2145 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2146 sap_demuxer_select="sdp_demuxer"
2147 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2148 sdp_demuxer_select="rtpdec"
2149 smoothstreaming_muxer_select="ismv_muxer"
2150 spdif_muxer_select="aac_parser"
2151 spx_muxer_select="ogg_muxer"
2152 tak_demuxer_select="tak_parser"
2153 tg2_muxer_select="mov_muxer"
2154 tgp_muxer_select="mov_muxer"
2155 w64_demuxer_select="wav_demuxer"
2156 wav_demuxer_select="riffdec"
2157 wav_muxer_select="riffenc"
2158 webm_muxer_select="riffenc"
2159 wtv_demuxer_select="riffdec"
2160 xmv_demuxer_select="riffdec"
2161 xwma_demuxer_select="riffdec"
2162
2163 # indevs / outdevs
2164 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2165 alsa_outdev_deps="alsa_asoundlib_h"
2166 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2167 dv1394_indev_deps="dv1394"
2168 dv1394_indev_select="dv_demuxer"
2169 fbdev_indev_deps="linux_fb_h"
2170 jack_indev_deps="jack_jack_h pthreads"
2171 libcdio_indev_deps="libcdio"
2172 libdc1394_indev_deps="libdc1394"
2173 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2174 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2175 pulse_indev_deps="libpulse"
2176 sndio_indev_deps="sndio_h"
2177 sndio_outdev_deps="sndio_h"
2178 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2179 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2180 vfwcap_indev_extralibs="-lavicap32"
2181 x11grab_indev_deps="x11grab"
2182 x11grab_xcb_indev_deps="libxcb"
2183
2184 # protocols
2185 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2186 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2187 ffrtmpcrypt_protocol_select="tcp_protocol"
2188 ffrtmphttp_protocol_deps="!librtmp_protocol"
2189 ffrtmphttp_protocol_select="http_protocol"
2190 gopher_protocol_select="network"
2191 http_protocol_select="tcp_protocol"
2192 httpproxy_protocol_select="tcp_protocol"
2193 https_protocol_select="tls_protocol"
2194 icecast_protocol_select="http_protocol"
2195 librtmp_protocol_deps="librtmp"
2196 librtmpe_protocol_deps="librtmp"
2197 librtmps_protocol_deps="librtmp"
2198 librtmpt_protocol_deps="librtmp"
2199 librtmpte_protocol_deps="librtmp"
2200 mmsh_protocol_select="http_protocol"
2201 mmst_protocol_select="network"
2202 rtmp_protocol_deps="!librtmp_protocol"
2203 rtmp_protocol_select="tcp_protocol"
2204 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2205 rtmps_protocol_deps="!librtmp_protocol"
2206 rtmps_protocol_select="tls_protocol"
2207 rtmpt_protocol_select="ffrtmphttp_protocol"
2208 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2209 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2210 rtp_protocol_select="udp_protocol"
2211 sctp_protocol_deps="struct_sctp_event_subscribe"
2212 sctp_protocol_select="network"
2213 srtp_protocol_select="rtp_protocol"
2214 tcp_protocol_select="network"
2215 tls_gnutls_protocol_deps="gnutls"
2216 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2217 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2218 tls_protocol_select="tcp_protocol"
2219 udp_protocol_select="network"
2220 unix_protocol_deps="sys_un_h"
2221 unix_protocol_select="network"
2222
2223 # filters
2224 blackframe_filter_deps="gpl"
2225 boxblur_filter_deps="gpl"
2226 bs2b_filter_deps="libbs2b"
2227 cropdetect_filter_deps="gpl"
2228 delogo_filter_deps="gpl"
2229 drawtext_filter_deps="libfreetype"
2230 frei0r_filter_deps="frei0r dlopen"
2231 frei0r_filter_extralibs='$ldl'
2232 frei0r_src_filter_deps="frei0r dlopen"
2233 frei0r_src_filter_extralibs='$ldl'
2234 hqdn3d_filter_deps="gpl"
2235 interlace_filter_deps="gpl"
2236 ocv_filter_deps="libopencv"
2237 resample_filter_deps="avresample"
2238 scale_filter_deps="swscale"
2239
2240 # examples
2241 avcodec_example_deps="avcodec avutil"
2242 filter_audio_example_deps="avfilter avutil"
2243 metadata_example_deps="avformat avutil"
2244 output_example_deps="avcodec avformat avutil swscale"
2245 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2246 transcode_aac_example_deps="avcodec avformat avresample"
2247
2248 # libraries, in linking order
2249 avcodec_deps="avutil"
2250 avdevice_deps="avformat avcodec avutil"
2251 avfilter_deps="avutil"
2252 avformat_deps="avcodec avutil"
2253 avresample_deps="avutil"
2254 swscale_deps="avutil"
2255
2256 # programs
2257 avconv_deps="avcodec avfilter avformat avresample swscale"
2258 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2259                fps_filter null_filter resample_filter scale_filter
2260                setpts_filter trim_filter"
2261 avplay_deps="avcodec avformat avresample swscale sdl"
2262 avplay_libs='$sdl_libs'
2263 avplay_select="rdft transpose_filter hflip_filter vflip_filter"
2264 avprobe_deps="avcodec avformat"
2265
2266 # documentation
2267 pod2man_deps="doc"
2268 texi2html_deps="doc"
2269
2270 # default parameters
2271
2272 logfile="config.log"
2273
2274 # installation paths
2275 prefix_default="/usr/local"
2276 bindir_default='${prefix}/bin'
2277 datadir_default='${prefix}/share/avconv'
2278 docdir_default='${prefix}/share/doc/libav'
2279 incdir_default='${prefix}/include'
2280 libdir_default='${prefix}/lib'
2281 mandir_default='${prefix}/share/man'
2282 shlibdir_default="$libdir_default"
2283
2284 # toolchain
2285 ar_default="ar"
2286 cc_default="gcc"
2287 host_cc_default="gcc"
2288 cp_f="cp -f"
2289 ln_s="ln -s -f"
2290 nm_default="nm -g"
2291 objformat="elf"
2292 pkg_config_default=pkg-config
2293 ranlib="ranlib"
2294 strip="strip"
2295 yasmexe="yasm"
2296
2297 # machine
2298 arch_default=$(uname -m)
2299 cpu="generic"
2300 intrinsics="none"
2301
2302 # OS
2303 target_os_default=$(tolower $(uname -s))
2304 host_os=$target_os_default
2305
2306 # configurable options
2307 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2308
2309 enable asm
2310 enable debug
2311 enable doc
2312 enable faan faandct faanidct
2313 enable optimizations
2314 enable safe_bitstream_reader
2315 enable static
2316 enable swscale_alpha
2317 enable valgrind_backtrace
2318
2319 # By default, enable only those hwaccels that have no external dependencies.
2320 enable d3d11va dxva2 vda vdpau
2321
2322 # build settings
2323 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2324 LIBPREF="lib"
2325 LIBSUF=".a"
2326 FULLNAME='$(NAME)$(BUILDSUF)'
2327 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2328 SLIBPREF="lib"
2329 SLIBSUF=".so"
2330 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2331 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2332 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2333 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2334 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2335 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2336
2337 asflags_filter=echo
2338 cflags_filter=echo
2339 ldflags_filter=echo
2340
2341 AS_C='-c'
2342 AS_O='-o $@'
2343 CC_C='-c'
2344 CC_E='-E -o $@'
2345 CC_O='-o $@'
2346 LD_O='-o $@'
2347 LD_LIB='-l%'
2348 LD_PATH='-L'
2349 HOSTCC_C='-c'
2350 HOSTCC_E='-E -o $@'
2351 HOSTCC_O='-o $@'
2352 HOSTLD_O='-o $@'
2353
2354 host_libs='-lm'
2355 host_cflags_filter=echo
2356 host_ldflags_filter=echo
2357
2358 target_path='$(CURDIR)'
2359
2360 # since the object filename is not given with the -MM flag, the compiler
2361 # is only able to print the basename, and we must add the path ourselves
2362 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2363 DEPFLAGS='-MM'
2364
2365 # find source path
2366 if test -f configure; then
2367     source_path=.
2368 else
2369     source_path=$(cd $(dirname "$0"); pwd)
2370     echo "$source_path" | grep -q '[[:blank:]]' &&
2371         die "Out of tree builds are impossible with whitespace in source path."
2372     test -e "$source_path/config.h" &&
2373         die "Out of tree builds are impossible with config.h in source dir."
2374 fi
2375
2376 for v in "$@"; do
2377     r=${v#*=}
2378     l=${v%"$r"}
2379     r=$(sh_quote "$r")
2380     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2381 done
2382
2383 find_things(){
2384     thing=$1
2385     pattern=$2
2386     file=$source_path/$3
2387     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2388 }
2389
2390 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2391 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2392 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2393 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2394 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2395 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2396 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2397 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2398 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2399 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2400 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2401
2402 ALL_COMPONENTS="
2403     $BSF_LIST
2404     $DECODER_LIST
2405     $DEMUXER_LIST
2406     $ENCODER_LIST
2407     $FILTER_LIST
2408     $HWACCEL_LIST
2409     $INDEV_LIST
2410     $MUXER_LIST
2411     $OUTDEV_LIST
2412     $PARSER_LIST
2413     $PROTOCOL_LIST
2414 "
2415
2416 for n in $COMPONENT_LIST; do
2417     v=$(toupper ${n%s})_LIST
2418     eval enable \$$v
2419     eval ${n}_if_any="\$$v"
2420 done
2421
2422 enable $ARCH_EXT_LIST
2423
2424 die_unknown(){
2425     echo "Unknown option \"$1\"."
2426     echo "See $0 --help for available options."
2427     exit 1
2428 }
2429
2430 print_3_columns() {
2431     cat | tr ' ' '\n' | sort | pr -r -3 -t
2432 }
2433
2434 show_list() {
2435     suffix=_$1
2436     shift
2437     echo $* | sed s/$suffix//g | print_3_columns
2438     exit 0
2439 }
2440
2441 rand_list(){
2442     IFS=', '
2443     set -- $*
2444     unset IFS
2445     for thing; do
2446         comp=${thing%:*}
2447         prob=${thing#$comp}
2448         prob=${prob#:}
2449         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2450         echo "prob ${prob:-0.5}"
2451         printf '%s\n' $comp
2452     done
2453 }
2454
2455 do_random(){
2456     action=$1
2457     shift
2458     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2459     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2460 }
2461
2462 for opt do
2463     optval="${opt#*=}"
2464     case "$opt" in
2465         --extra-ldflags=*)
2466             add_ldflags $optval
2467         ;;
2468         --extra-ldexeflags=*)
2469             add_ldexeflags $optval
2470         ;;
2471         --extra-libs=*)
2472             add_extralibs $optval
2473         ;;
2474         --disable-devices)
2475             disable $INDEV_LIST $OUTDEV_LIST
2476         ;;
2477         --enable-debug=*)
2478             debuglevel="$optval"
2479         ;;
2480         --disable-programs)
2481             disable $PROGRAM_LIST
2482         ;;
2483         --disable-everything)
2484             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2485         ;;
2486         --disable-all)
2487             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2488             disable $LIBRARY_LIST $PROGRAM_LIST doc
2489         ;;
2490         --enable-random|--disable-random)
2491             action=${opt%%-random}
2492             do_random ${action#--} $COMPONENT_LIST
2493         ;;
2494         --enable-random=*|--disable-random=*)
2495             action=${opt%%-random=*}
2496             do_random ${action#--} $optval
2497         ;;
2498         --enable-*=*|--disable-*=*)
2499             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2500             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2501             eval list=\$$(toupper $thing)_LIST
2502             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2503             $action $(filter "$name" $list)
2504         ;;
2505         --enable-avserver|--disable-avserver*)
2506             warn "avserver has been removed, the ${opt} option is only"\
2507                  "provided for compatibility and will be removed in the future"
2508         ;;
2509         --enable-?*|--disable-?*)
2510             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2511             if is_in $option $COMPONENT_LIST; then
2512                 test $action = disable && action=unset
2513                 eval $action \$$(toupper ${option%s})_LIST
2514             elif is_in $option $CMDLINE_SELECT; then
2515                 $action $option
2516             else
2517                 die_unknown $opt
2518             fi
2519         ;;
2520         --list-*)
2521             NAME="${opt#--list-}"
2522             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2523             NAME=${NAME%s}
2524             eval show_list $NAME \$$(toupper $NAME)_LIST
2525         ;;
2526         --help|-h) show_help
2527         ;;
2528         *)
2529             optname="${opt%%=*}"
2530             optname="${optname#--}"
2531             optname=$(echo "$optname" | sed 's/-/_/g')
2532             if is_in $optname $CMDLINE_SET; then
2533                 eval $optname='$optval'
2534             elif is_in $optname $CMDLINE_APPEND; then
2535                 append $optname "$optval"
2536             else
2537                 die_unknown $opt
2538             fi
2539         ;;
2540     esac
2541 done
2542
2543 disabled logging && logfile=/dev/null
2544
2545 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2546 set >> $logfile
2547
2548 case "$toolchain" in
2549     clang-asan)
2550         cc_default="clang"
2551         add_cflags  -fsanitize=address
2552         add_ldflags -fsanitize=address
2553     ;;
2554     clang-tsan)
2555         cc_default="clang"
2556         add_cflags  -fsanitize=thread -pie
2557         add_ldflags -fsanitize=thread -pie
2558     ;;
2559     clang-usan)
2560         cc_default="clang"
2561         add_cflags  -fsanitize=undefined -O1
2562         add_ldflags -fsanitize=undefined
2563     ;;
2564     gcc-asan)
2565         cc_default="gcc"
2566         add_cflags  -fsanitize=address
2567         add_ldflags -fsanitize=address
2568     ;;
2569     gcc-tsan)
2570         cc_default="gcc"
2571         add_cflags  -fsanitize=thread -pie -fPIC
2572         add_ldflags -fsanitize=thread -pie -fPIC
2573     ;;
2574     gcc-usan)
2575         cc_default="gcc"
2576         add_cflags  -fsanitize=undefined
2577         add_ldflags -fsanitize=undefined
2578     ;;
2579     valgrind-massif)
2580         target_exec_default="valgrind"
2581         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2582     ;;
2583     valgrind-memcheck)
2584         target_exec_default="valgrind"
2585         target_exec_args="--track-origins=yes --leak-check=full"
2586     ;;
2587     msvc)
2588         # Check whether the current MSVC version needs the C99 converter.
2589         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2590         # support enough of C99 to build libav. Default to the new
2591         # behaviour if the regexp was unable to match anything, since this
2592         # successfully parses the version number of existing supported
2593         # versions that require the converter (MSVC 2010 and 2012).
2594         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2595         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2596             cc_default="cl"
2597         else
2598             cc_default="c99wrap cl"
2599         fi
2600         ld_default="link"
2601         nm_default="dumpbin -symbols"
2602         ar_default="lib"
2603         target_os_default="win32"
2604         # Use a relative path for TMPDIR. This makes sure all the
2605         # ffconf temp files are written with a relative path, avoiding
2606         # issues with msys/win32 path conversion for MSVC parameters
2607         # such as -Fo<file> or -out:<file>.
2608         TMPDIR=.
2609     ;;
2610     icl)
2611         cc_default="icl"
2612         ld_default="xilink"
2613         nm_default="dumpbin -symbols"
2614         ar_default="xilib"
2615         target_os_default="win32"
2616         TMPDIR=.
2617     ;;
2618     gcov)
2619         add_cflags  -fprofile-arcs -ftest-coverage
2620         add_ldflags -fprofile-arcs -ftest-coverage
2621     ;;
2622     hardened)
2623         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2624         add_cflags   -fno-strict-overflow -fstack-protector-all
2625         add_ldflags  -Wl,-z,relro -Wl,-z,now
2626     ;;
2627     ?*)
2628         die "Unknown toolchain $toolchain"
2629     ;;
2630 esac
2631
2632 test -n "$cross_prefix" && enable cross_compile
2633
2634 if enabled cross_compile; then
2635     test -n "$arch" && test -n "$target_os" ||
2636         die "Must specify target arch and OS when cross-compiling"
2637 fi
2638
2639 ar_default="${cross_prefix}${ar_default}"
2640 cc_default="${cross_prefix}${cc_default}"
2641 nm_default="${cross_prefix}${nm_default}"
2642 pkg_config_default="${cross_prefix}${pkg_config_default}"
2643 ranlib="${cross_prefix}${ranlib}"
2644 strip="${cross_prefix}${strip}"
2645
2646 sysinclude_default="${sysroot}/usr/include"
2647
2648 set_default arch cc pkg_config sysinclude target_exec target_os
2649 enabled cross_compile || host_cc_default=$cc
2650 set_default host_cc
2651
2652 if ! $pkg_config --version >/dev/null 2>&1; then
2653     warn "$pkg_config not found, library detection may fail."
2654     pkg_config=false
2655 fi
2656
2657 exesuf() {
2658     case $1 in
2659         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2660     esac
2661 }
2662
2663 EXESUF=$(exesuf $target_os)
2664 HOSTEXESUF=$(exesuf $host_os)
2665
2666 # set temporary file name
2667 : ${TMPDIR:=$TEMPDIR}
2668 : ${TMPDIR:=$TMP}
2669 : ${TMPDIR:=/tmp}
2670
2671 if ! check_cmd mktemp -u XXXXXX; then
2672     # simple replacement for missing mktemp
2673     # NOT SAFE FOR GENERAL USE
2674     mktemp(){
2675         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2676     }
2677 fi
2678
2679 tmpfile(){
2680     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2681         (set -C; exec > $tmp) 2>/dev/null ||
2682         die "Unable to create temporary file in $TMPDIR."
2683     append TMPFILES $tmp
2684     eval $1=$tmp
2685 }
2686
2687 trap 'rm -f -- $TMPFILES' EXIT
2688
2689 tmpfile TMPASM .asm
2690 tmpfile TMPC   .c
2691 tmpfile TMPE   $EXESUF
2692 tmpfile TMPH   .h
2693 tmpfile TMPO   .o
2694 tmpfile TMPS   .S
2695 tmpfile TMPSH  .sh
2696 tmpfile TMPV   .ver
2697
2698 unset -f mktemp
2699
2700 chmod +x $TMPE
2701
2702 # make sure we can execute files in $TMPDIR
2703 cat > $TMPSH 2>> $logfile <<EOF
2704 #! /bin/sh
2705 EOF
2706 chmod +x $TMPSH >> $logfile 2>&1
2707 if ! $TMPSH >> $logfile 2>&1; then
2708     cat <<EOF
2709 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2710 variable to another directory and make sure that it is not mounted noexec.
2711 EOF
2712     die "Sanity test failed."
2713 fi
2714
2715 armasm_flags(){
2716     for flag; do
2717         case $flag in
2718             # Filter out MSVC cl.exe options from cflags that shouldn't
2719             # be passed to gas-preprocessor
2720             -M[TD]*)                                            ;;
2721             *)                  echo $flag                      ;;
2722         esac
2723    done
2724 }
2725
2726 ccc_flags(){
2727     for flag; do
2728         case $flag in
2729             -std=c99)           echo -c99                       ;;
2730             -mcpu=*)            echo -arch ${flag#*=}           ;;
2731             -mieee)             echo -ieee                      ;;
2732             -O*|-fast)          echo $flag                      ;;
2733             -fno-math-errno)    echo -assume nomath_errno       ;;
2734             -g)                 echo -g3                        ;;
2735             -Wall)              echo -msg_enable level2         ;;
2736             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2737             -Wl,*)              echo $flag                      ;;
2738             -f*|-W*)                                            ;;
2739             *)                  echo $flag                      ;;
2740         esac
2741    done
2742 }
2743
2744 cparser_flags(){
2745     for flag; do
2746         case $flag in
2747             -Wno-switch)             echo -Wno-switch-enum ;;
2748             -Wno-format-zero-length) ;;
2749             -Wdisabled-optimization) ;;
2750             -Wno-pointer-sign)       echo -Wno-other ;;
2751             *)                       echo $flag ;;
2752         esac
2753     done
2754 }
2755
2756 msvc_common_flags(){
2757     for flag; do
2758         case $flag in
2759             # In addition to specifying certain flags under the compiler
2760             # specific filters, they must be specified here as well or else the
2761             # generic catch all at the bottom will print the original flag.
2762             -Wall)                ;;
2763             -std=c99)             ;;
2764             # Common flags
2765             -fomit-frame-pointer) ;;
2766             -g)                   echo -Z7 ;;
2767             -fno-math-errno)      ;;
2768             -fno-common)          ;;
2769             -fno-signed-zeros)    ;;
2770             -fPIC)                ;;
2771             -mthumb)              ;;
2772             -march=*)             ;;
2773             -lz)                  echo zlib.lib ;;
2774             -lavifil32)           echo vfw32.lib ;;
2775             -lavicap32)           echo vfw32.lib user32.lib ;;
2776             -l*)                  echo ${flag#-l}.lib ;;
2777             -L*)                  echo -libpath:${flag#-L} ;;
2778             *)                    echo $flag ;;
2779         esac
2780     done
2781 }
2782
2783 msvc_flags(){
2784     msvc_common_flags "$@"
2785     for flag; do
2786         case $flag in
2787             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2788                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2789                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2790                                        -wd4273 -wd4554 -wd4701 ;;
2791         esac
2792     done
2793 }
2794
2795 icl_flags(){
2796     msvc_common_flags "$@"
2797     for flag; do
2798         case $flag in
2799             # Despite what Intel's documentation says -Wall, which is supported
2800             # on Windows, does enable remarks so disable them here.
2801             -Wall)                echo $flag -Qdiag-disable:remark ;;
2802             -std=c99)             echo -Qstd=c99 ;;
2803         esac
2804     done
2805 }
2806
2807 pgi_flags(){
2808     for flag; do
2809         case $flag in
2810             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2811             -fomit-frame-pointer) echo -Mnoframe ;;
2812             -g)                   echo -gopt ;;
2813             *)                    echo $flag ;;
2814         esac
2815     done
2816 }
2817
2818 suncc_flags(){
2819     for flag; do
2820         case $flag in
2821             -march=*|-mcpu=*)
2822                 case "${flag#*=}" in
2823                     native)                   echo -xtarget=native       ;;
2824                     v9|niagara)               echo -xarch=sparc          ;;
2825                     ultrasparc)               echo -xarch=sparcvis       ;;
2826                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2827                     i586|pentium)             echo -xchip=pentium        ;;
2828                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2829                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2830                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2831                     pentium4*)          echo -xtarget=pentium4           ;;
2832                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2833                     *-sse3)             echo -xarch=sse3                 ;;
2834                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2835                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2836                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2837                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2838                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2839                     k8|opteron|athlon64|athlon-fx)
2840                                                echo -xarch=sse2a         ;;
2841                     athlon*)                   echo -xarch=pentium_proa  ;;
2842                 esac
2843                 ;;
2844             -std=c99)             echo -xc99              ;;
2845             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2846             -fPIC)                echo -KPIC -xcode=pic32 ;;
2847             -W*,*)                echo $flag              ;;
2848             -f*-*|-W*|-mimpure-text)                      ;;
2849             -shared)              echo -G                 ;;
2850             *)                    echo $flag              ;;
2851         esac
2852     done
2853 }
2854
2855 tms470_flags(){
2856     for flag; do
2857         case $flag in
2858             -march=*|-mcpu=*)
2859                 case "${flag#*=}" in
2860                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2861                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2862                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2863                     armv6*|arm11*)          echo -mv=6   ;;
2864                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2865                                             echo -mv=5e  ;;
2866                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2867                 esac
2868                 ;;
2869             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2870             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2871             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2872             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2873             -msoft-float)   echo --float_support=vfplib       ;;
2874             -O[0-3]|-mf=*)  echo $flag                        ;;
2875             -g)             echo -g -mn                       ;;
2876             -pds=*)         echo $flag                        ;;
2877             -D*|-I*)        echo $flag                        ;;
2878             --gcc|--abi=*)  echo $flag                        ;;
2879             -me)            echo $flag                        ;;
2880         esac
2881     done
2882 }
2883
2884 probe_cc(){
2885     pfx=$1
2886     _cc=$2
2887
2888     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2889     unset _ld_o _ldflags _ld_lib _ld_path
2890     unset _depflags _DEPCMD _DEPFLAGS
2891     _flags_filter=echo
2892
2893     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2894         _type=llvm_gcc
2895         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2896         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2897         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2898         _cflags_speed='-O3'
2899         _cflags_size='-Os'
2900     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2901         _type=gcc
2902         gcc_version=$($_cc --version | head -n1)
2903         gcc_basever=$($_cc -dumpversion)
2904         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2905         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2906         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2907         if ! $_cc -dumpversion | grep -q '^2\.'; then
2908             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2909         fi
2910         _cflags_speed='-O3'
2911         _cflags_size='-Os'
2912     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2913         _type=icc
2914         _ident=$($_cc --version | head -n1)
2915         _depflags='-MMD'
2916         _cflags_speed='-O3'
2917         _cflags_size='-Os'
2918         _cflags_noopt='-O1'
2919     elif $_cc -v 2>&1 | grep -q xlc; then
2920         _type=xlc
2921         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2922         _cflags_speed='-O5'
2923         _cflags_size='-O5 -qcompact'
2924     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2925         _type=ccc
2926         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2927         _DEPFLAGS='-M'
2928         _cflags_speed='-fast'
2929         _cflags_size='-O1'
2930         _flags_filter=ccc_flags
2931     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2932         test -d "$sysroot" || die "No valid sysroot specified."
2933         _type=armcc
2934         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2935         armcc_conf="$PWD/armcc.conf"
2936         $_cc --arm_linux_configure                 \
2937              --arm_linux_config_file="$armcc_conf" \
2938              --configure_sysroot="$sysroot"        \
2939              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2940              die "Error creating armcc configuration file."
2941         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2942         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2943         as_default="${cross_prefix}gcc"
2944         _depflags='-MMD'
2945         _cflags_speed='-O3'
2946         _cflags_size='-Os'
2947     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2948         _type=tms470
2949         _ident=$($_cc -version | head -n1 | tr -s ' ')
2950         _flags='--gcc --abi=eabi -me'
2951         _cc_e='-ppl -fe=$@'
2952         _cc_o='-fe=$@'
2953         _depflags='-ppa -ppd=$(@:.o=.d)'
2954         _cflags_speed='-O3 -mf=5'
2955         _cflags_size='-O3 -mf=2'
2956         _flags_filter=tms470_flags
2957     elif $_cc -v 2>&1 | grep -q clang; then
2958         _type=clang
2959         _ident=$($_cc --version | head -n1)
2960         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2961         _cflags_speed='-O3'
2962         _cflags_size='-Os'
2963     elif $_cc -V 2>&1 | grep -q Sun; then
2964         _type=suncc
2965         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2966         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2967         _DEPFLAGS='-xM1 -xc99'
2968         _ldflags='-std=c99'
2969         _cflags_speed='-O5'
2970         _cflags_size='-O5 -xspace'
2971         _flags_filter=suncc_flags
2972     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2973         _type=pathscale
2974         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2975         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2976         _cflags_speed='-O2'
2977         _cflags_size='-Os'
2978         _flags_filter='filter_out -Wdisabled-optimization'
2979     elif $_cc -v 2>&1 | grep -q Open64; then
2980         _type=open64
2981         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2982         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2983         _cflags_speed='-O2'
2984         _cflags_size='-Os'
2985         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2986     elif $_cc -V 2>&1 | grep -q Portland; then
2987         _type=pgi
2988         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2989         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2990         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2991         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2992         _cflags_noopt="-O1"
2993         _flags_filter=pgi_flags
2994     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
2995         _type=armasm
2996         _ident=$($_cc | head -n1)
2997         # 4509: "This form of conditional instruction is deprecated"
2998         _flags="-nologo -ignore 4509"
2999         _flags_filter=armasm_flags
3000     elif $_cc 2>&1 | grep -q Microsoft; then
3001         _type=msvc
3002         _ident=$($_cc 2>&1 | head -n1)
3003         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3004         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3005         _cflags_speed="-O2"
3006         _cflags_size="-O1"
3007         if $_cc 2>&1 | grep -q Linker; then
3008             _ld_o='-out:$@'
3009         else
3010             _ld_o='-Fe$@'
3011         fi
3012         _cc_o='-Fo$@'
3013         _cc_e='-P -Fi$@'
3014         _flags_filter=msvc_flags
3015         _ld_lib='lib%.a'
3016         _ld_path='-libpath:'
3017         _flags='-nologo'
3018         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3019         if [ $pfx = hostcc ]; then
3020             append _cflags -Dsnprintf=_snprintf
3021         fi
3022     elif $_cc 2>&1 | grep -q Intel; then
3023         _type=icl
3024         _ident=$($_cc 2>&1 | head -n1)
3025         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3026         # Not only is O3 broken on 13.x+ but it is slower on all previous
3027         # versions (tested) as well.
3028         _cflags_speed="-O2"
3029         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3030         if $_cc 2>&1 | grep -q Linker; then
3031             _ld_o='-out:$@'
3032         else
3033             _ld_o='-Fe$@'
3034         fi
3035         _cc_o='-Fo$@'
3036         _cc_e='-P'
3037         _flags_filter=icl_flags
3038         _ld_lib='lib%.a'
3039         _ld_path='-libpath:'
3040         # -Qdiag-error to make icl error when seeing certain unknown arguments
3041         _flags='-nologo -Qdiag-error:4044,10157'
3042         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3043         # with MSVC which enables it by default.
3044         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3045         if [ $pfx = hostcc ]; then
3046             append _cflags -Dsnprintf=_snprintf
3047         fi
3048     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3049         _type=cparser
3050         _ident=$($_cc --version | head -n1)
3051         _depflags='-MMD'
3052         _cflags_speed='-O4'
3053         _cflags_size='-O2'
3054         _flags_filter=cparser_flags
3055     fi
3056
3057     eval ${pfx}_type=\$_type
3058     eval ${pfx}_ident=\$_ident
3059 }
3060
3061 set_ccvars(){
3062     eval ${1}_C=\${_cc_c-\${${1}_C}}
3063     eval ${1}_E=\${_cc_e-\${${1}_E}}
3064     eval ${1}_O=\${_cc_o-\${${1}_O}}
3065
3066     if [ -n "$_depflags" ]; then
3067         eval ${1}_DEPFLAGS=\$_depflags
3068     else
3069         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3070         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3071         eval DEP${1}FLAGS=\$_flags
3072     fi
3073 }
3074
3075 probe_cc cc "$cc"
3076 cflags_filter=$_flags_filter
3077 cflags_speed=$_cflags_speed
3078 cflags_size=$_cflags_size
3079 cflags_noopt=$_cflags_noopt
3080 add_cflags $_flags $_cflags
3081 cc_ldflags=$_ldflags
3082 set_ccvars CC
3083
3084 probe_cc hostcc "$host_cc"
3085 host_cflags_filter=$_flags_filter
3086 add_host_cflags  $_flags $_cflags
3087 set_ccvars HOSTCC
3088
3089 test -n "$cc_type" && enable $cc_type ||
3090     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3091
3092 : ${as_default:=$cc}
3093 : ${dep_cc_default:=$cc}
3094 : ${ld_default:=$cc}
3095 : ${host_ld_default:=$host_cc}
3096 set_default ar as dep_cc ld host_ld
3097
3098 probe_cc as "$as"
3099 asflags_filter=$_flags_filter
3100 add_asflags $_flags $_cflags
3101 set_ccvars AS
3102
3103 probe_cc ld "$ld"
3104 ldflags_filter=$_flags_filter
3105 add_ldflags $_flags $_ldflags
3106 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3107 LD_O=${_ld_o-$LD_O}
3108 LD_LIB=${_ld_lib-$LD_LIB}
3109 LD_PATH=${_ld_path-$LD_PATH}
3110
3111 probe_cc hostld "$host_ld"
3112 host_ldflags_filter=$_flags_filter
3113 add_host_ldflags $_flags $_ldflags
3114 HOSTLD_O=${_ld_o-$HOSTLD_O}
3115
3116 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3117     probe_cc depcc "$dep_cc"
3118     CCDEP=${_DEPCMD:-$DEPCMD}
3119     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3120     DEPCCFLAGS=$_flags
3121 fi
3122
3123 if $ar 2>&1 | grep -q Microsoft; then
3124     arflags="-nologo"
3125     ar_o='-out:$@'
3126 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3127     arflags="rq"
3128     ar_o='$@'
3129 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3130     arflags='-Xany -r -c'
3131     ar_o='$@'
3132 else
3133     arflags="rc"
3134     ar_o='$@'
3135 fi
3136
3137 add_cflags $extra_cflags
3138 add_asflags $extra_cflags
3139
3140 if test -n "$sysroot"; then
3141     case "$cc_type" in
3142         gcc|llvm_gcc|clang)
3143             add_cppflags --sysroot="$sysroot"
3144             add_ldflags --sysroot="$sysroot"
3145         ;;
3146         tms470)
3147             add_cppflags -I"$sysinclude"
3148             add_ldflags  --sysroot="$sysroot"
3149         ;;
3150     esac
3151 fi
3152
3153 if test "$cpu" = host; then
3154     enabled cross_compile &&
3155         die "--cpu=host makes no sense when cross-compiling."
3156
3157     case "$cc_type" in
3158         gcc|llvm_gcc)
3159             check_native(){
3160                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3161                 sed -n "/cc1.*$1=/{
3162                             s/.*$1=\\([^ ]*\\).*/\\1/
3163                             p
3164                             q
3165                         }" $TMPE
3166             }
3167             cpu=$(check_native -march || check_native -mcpu)
3168         ;;
3169     esac
3170
3171     test "${cpu:-host}" = host &&
3172         die "--cpu=host not supported with compiler $cc"
3173 fi
3174
3175 # Deal with common $arch aliases
3176 case "$arch" in
3177     aarch64|arm64)
3178         arch="aarch64"
3179     ;;
3180     arm*)
3181         arch="arm"
3182     ;;
3183     mips*|IP*)
3184         arch="mips"
3185     ;;
3186     parisc*|hppa*)
3187         arch="parisc"
3188     ;;
3189     "Power Macintosh"|ppc*|powerpc*)
3190         arch="ppc"
3191     ;;
3192     s390|s390x)
3193         arch="s390"
3194     ;;
3195     sh4|sh)
3196         arch="sh4"
3197     ;;
3198     sun4u|sparc*)
3199         arch="sparc"
3200     ;;
3201     tilegx|tile-gx)
3202         arch="tilegx"
3203     ;;
3204     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3205         arch="x86"
3206     ;;
3207 esac
3208
3209 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3210 enable $arch
3211
3212 # Add processor-specific flags
3213 if enabled aarch64; then
3214
3215     case $cpu in
3216         armv*)
3217             cpuflags="-march=$cpu"
3218         ;;
3219         *)
3220             cpuflags="-mcpu=$cpu"
3221         ;;
3222     esac
3223
3224 elif enabled alpha; then
3225
3226     cpuflags="-mcpu=$cpu"
3227
3228 elif enabled arm; then
3229
3230     check_arm_arch() {
3231         check_cpp_condition stddef.h \
3232             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3233             $cpuflags
3234     }
3235
3236     probe_arm_arch() {
3237         if   check_arm_arch 4;        then echo armv4;
3238         elif check_arm_arch 4T;       then echo armv4t;
3239         elif check_arm_arch 5;        then echo armv5;
3240         elif check_arm_arch 5E;       then echo armv5e;
3241         elif check_arm_arch 5T;       then echo armv5t;
3242         elif check_arm_arch 5TE;      then echo armv5te;
3243         elif check_arm_arch 5TEJ;     then echo armv5te;
3244         elif check_arm_arch 6;        then echo armv6;
3245         elif check_arm_arch 6J;       then echo armv6j;
3246         elif check_arm_arch 6K;       then echo armv6k;
3247         elif check_arm_arch 6Z;       then echo armv6z;
3248         elif check_arm_arch 6ZK;      then echo armv6zk;
3249         elif check_arm_arch 6T2;      then echo armv6t2;
3250         elif check_arm_arch 7;        then echo armv7;
3251         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3252         elif check_arm_arch 7S;       then echo armv7-a;
3253         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3254         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3255         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3256         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3257         fi
3258     }
3259
3260     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3261
3262     case $cpu in
3263         armv*)
3264             cpuflags="-march=$cpu"
3265             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3266         ;;
3267         *)
3268             cpuflags="-mcpu=$cpu"
3269             case $cpu in
3270                 cortex-a*)                               subarch=armv7a  ;;
3271                 cortex-r*)                               subarch=armv7r  ;;
3272                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3273                 arm11*)                                  subarch=armv6   ;;
3274                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3275                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3276                 *)                             subarch=$(probe_arm_arch) ;;
3277             esac
3278         ;;
3279     esac
3280
3281     case "$subarch" in
3282         armv5t*)    enable fast_clz                ;;
3283         armv[6-8]*) enable fast_clz fast_unaligned ;;
3284     esac
3285
3286 elif enabled avr32; then
3287
3288     case $cpu in
3289         ap7[02]0[0-2])
3290             subarch="avr32_ap"
3291             cpuflags="-mpart=$cpu"
3292         ;;
3293         ap)
3294             subarch="avr32_ap"
3295             cpuflags="-march=$cpu"
3296         ;;
3297         uc3[ab]*)
3298             subarch="avr32_uc"
3299             cpuflags="-mcpu=$cpu"
3300         ;;
3301         uc)
3302             subarch="avr32_uc"
3303             cpuflags="-march=$cpu"
3304         ;;
3305     esac
3306
3307 elif enabled bfin; then
3308
3309     cpuflags="-mcpu=$cpu"
3310
3311 elif enabled mips; then
3312
3313     cpuflags="-march=$cpu"
3314
3315 elif enabled ppc; then
3316
3317     disable ldbrx
3318
3319     case $(tolower $cpu) in
3320         601|ppc601|powerpc601)
3321             cpuflags="-mcpu=601"
3322             disable altivec
3323         ;;
3324         603*|ppc603*|powerpc603*)
3325             cpuflags="-mcpu=603"
3326             disable altivec
3327         ;;
3328         604*|ppc604*|powerpc604*)
3329             cpuflags="-mcpu=604"
3330             disable altivec
3331         ;;
3332         g3|75*|ppc75*|powerpc75*)
3333             cpuflags="-mcpu=750"
3334             disable altivec
3335         ;;
3336         g4|745*|ppc745*|powerpc745*)
3337             cpuflags="-mcpu=7450"
3338             disable vsx
3339         ;;
3340         74*|ppc74*|powerpc74*)
3341             cpuflags="-mcpu=7400"
3342             disable vsx
3343         ;;
3344         g5|970|ppc970|powerpc970)
3345             cpuflags="-mcpu=970"
3346             disable vsx
3347         ;;
3348         power[3-6]*)
3349             cpuflags="-mcpu=$cpu"
3350             disable vsx
3351         ;;
3352         power[7-8]*)
3353             cpuflags="-mcpu=$cpu"
3354             enable ldbrx
3355         ;;
3356         cell)
3357             cpuflags="-mcpu=cell"
3358             enable ldbrx
3359             disable vsx
3360         ;;
3361         e500mc)
3362             cpuflags="-mcpu=e500mc"
3363             disable altivec
3364         ;;
3365         e500v2)
3366             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3367             disable altivec
3368             disable dcbzl
3369         ;;
3370         e500)
3371             cpuflags="-mcpu=8540 -mhard-float"
3372             disable altivec
3373             disable dcbzl
3374         ;;
3375     esac
3376
3377 elif enabled sparc; then
3378
3379     case $cpu in
3380         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3381             cpuflags="-mcpu=$cpu"
3382         ;;
3383         ultrasparc*|niagara[234])
3384             cpuflags="-mcpu=$cpu"
3385         ;;
3386     esac
3387
3388 elif enabled x86; then
3389
3390     case $cpu in
3391         i[345]86|pentium)
3392             cpuflags="-march=$cpu"
3393             disable i686
3394             disable mmx
3395         ;;
3396         # targets that do NOT support nopl and conditional mov (cmov)
3397         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3398             cpuflags="-march=$cpu"
3399             disable i686
3400         ;;
3401         # targets that do support nopl and conditional mov (cmov)
3402         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3403             cpuflags="-march=$cpu"
3404             enable i686
3405             enable fast_cmov
3406         ;;
3407         # targets that do support conditional mov but on which it's slow
3408         pentium4|pentium4m|prescott|nocona)
3409             cpuflags="-march=$cpu"
3410             enable i686
3411             disable fast_cmov
3412         ;;
3413     esac
3414
3415 fi
3416
3417 if [ "$cpu" != generic ]; then
3418     add_cflags  $cpuflags
3419     add_asflags $cpuflags
3420 fi
3421
3422 # compiler sanity check
3423 check_exec <<EOF
3424 int main(void){ return 0; }
3425 EOF
3426 if test "$?" != 0; then
3427     echo "$cc is unable to create an executable file."
3428     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3429         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3430         echo "Only do this if you know what cross compiling means."
3431     fi
3432     die "C compiler test failed."
3433 fi
3434
3435 add_cppflags -D_ISOC99_SOURCE
3436 check_cflags -std=c99
3437 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3438 #include <stdlib.h>
3439 EOF
3440 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3441 #include <stdlib.h>
3442 EOF
3443
3444 add_host_cppflags -D_ISOC99_SOURCE
3445 check_host_cflags -std=c99
3446 check_host_cflags -Wall
3447 check_host_cflags -O3
3448
3449 check_64bit(){
3450     arch32=$1
3451     arch64=$2
3452     expr=$3
3453     check_code cc "" "int test[2*($expr) - 1]" &&
3454         subarch=$arch64 || subarch=$arch32
3455 }
3456
3457 case "$arch" in
3458     aarch64|alpha|ia64)
3459         spic=$shared
3460     ;;
3461     mips)
3462         check_64bit mips mips64 '_MIPS_SIM > 1'
3463         spic=$shared
3464     ;;
3465     parisc)
3466         check_64bit parisc parisc64 'sizeof(void *) > 4'
3467         spic=$shared
3468     ;;
3469     ppc)
3470         check_64bit ppc ppc64 'sizeof(void *) > 4'
3471         spic=$shared
3472     ;;
3473     s390)
3474         check_64bit s390 s390x 'sizeof(void *) > 4'
3475         spic=$shared
3476     ;;
3477     sparc)
3478         check_64bit sparc sparc64 'sizeof(void *) > 4'
3479         spic=$shared
3480     ;;
3481     x86)
3482         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3483         if test "$subarch" = "x86_64"; then
3484             spic=$shared
3485         fi
3486     ;;
3487 esac
3488
3489 enable $subarch
3490 enabled spic && enable_weak pic
3491
3492 # OS specific
3493 case $target_os in
3494     aix)
3495         SHFLAGS=-shared
3496         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3497         enabled shared && add_ldflags -Wl,-brtl
3498         ;;
3499     android)
3500         disable symver
3501         enable section_data_rel_ro
3502         SLIB_INSTALL_NAME='$(SLIBNAME)'
3503         SLIB_INSTALL_LINKS=
3504         # soname not set on purpose
3505         SHFLAGS=-shared
3506         ;;
3507     haiku)
3508         prefix_default="/boot/common"
3509         network_extralibs="-lnetwork"
3510         host_libs=
3511         ;;
3512     sunos)
3513         SHFLAGS='-shared -Wl,-h,$$(@F)'
3514         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3515         network_extralibs="-lsocket -lnsl"
3516         # When using suncc to build, the Solaris linker will mark
3517         # an executable with each instruction set encountered by
3518         # the Solaris assembler.  As our libraries contain their own
3519         # guards for processor-specific code, instead suppress
3520         # generation of the HWCAPS ELF section on Solaris x86 only.
3521         enabled_all suncc x86 &&
3522             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3523             add_ldflags -Wl,-M,mapfile
3524         nm_default='nm -P -g'
3525         ;;
3526     netbsd)
3527         disable symver
3528         oss_indev_extralibs="-lossaudio"
3529         oss_outdev_extralibs="-lossaudio"
3530         ;;
3531     openbsd|bitrig)
3532         disable symver
3533         SHFLAGS='-shared'
3534         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3535         SLIB_INSTALL_LINKS=
3536         oss_indev_extralibs="-lossaudio"
3537         oss_outdev_extralibs="-lossaudio"
3538         ;;
3539     dragonfly)
3540         disable symver
3541         ;;
3542     freebsd)
3543         ;;
3544     bsd/os)
3545         add_extralibs -lpoll -lgnugetopt
3546         ;;
3547     darwin)
3548         enabled ppc && add_asflags -force_cpusubtype_ALL
3549         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3550         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3551         add_ldflags -Wl,-dynamic,-search_paths_first
3552         SLIBSUF=".dylib"
3553         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3554         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3555         objformat="macho"
3556         enabled x86_64 && objformat="macho64"
3557         enabled_any pic shared ||
3558             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3559         ;;
3560     mingw32*)
3561         if test $target_os = "mingw32ce"; then
3562             disable network
3563         else
3564             target_os=mingw32
3565         fi
3566         LIBTARGET=i386
3567         if enabled x86_64; then
3568             LIBTARGET="i386:x86-64"
3569         elif enabled arm; then
3570             LIBTARGET=arm-wince
3571         fi
3572         check_ldflags -Wl,--nxcompat
3573         check_ldflags -Wl,--dynamicbase
3574         shlibdir_default="$bindir_default"
3575         SLIBPREF=""
3576         SLIBSUF=".dll"
3577         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3578         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3579         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3580         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3581         SLIB_INSTALL_LINKS=
3582         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3583         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3584         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3585         objformat="win32"
3586         dlltool="${cross_prefix}dlltool"
3587         ranlib=:
3588         enable dos_paths
3589         ;;
3590     win32|win64)
3591         disable symver
3592         if enabled shared; then
3593             # Link to the import library instead of the normal static library
3594             # for shared libs.
3595             LD_LIB='%.lib'
3596             # Cannot build both shared and static libs with MSVC or icl.
3597             disable static
3598         fi
3599         shlibdir_default="$bindir_default"
3600         SLIBPREF=""
3601         SLIBSUF=".dll"
3602         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3603         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3604         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3605         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3606         SLIB_INSTALL_LINKS=
3607         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3608         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3609         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3610         objformat="win32"
3611         ranlib=:
3612         enable dos_paths
3613         ;;
3614     cygwin*)
3615         target_os=cygwin
3616         shlibdir_default="$bindir_default"
3617         SLIBPREF="cyg"
3618         SLIBSUF=".dll"
3619         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3620         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3621         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3622         SLIB_INSTALL_LINKS=
3623         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3624         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3625         objformat="win32"
3626         enable dos_paths
3627         ;;
3628     *-dos|freedos|opendos)
3629         network_extralibs="-lsocket"
3630         objformat="coff"
3631         enable dos_paths
3632         add_cppflags -U__STRICT_ANSI__
3633         ;;
3634     linux)
3635         enable dv1394
3636         enable section_data_rel_ro
3637         ;;
3638     irix*)
3639         target_os=irix
3640         ranlib="echo ignoring ranlib"
3641         ;;
3642     os/2*)
3643         ln_s="cp -f"
3644         objformat="aout"
3645         add_cppflags -D_GNU_SOURCE
3646         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3647         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3648         LIBSUF="_s.a"
3649         SLIBPREF=""
3650         SLIBSUF=".dll"
3651         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3652         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3653         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3654             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3655             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3656             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3657             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3658             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3659         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3660             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3661         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3662         enable dos_paths
3663         ;;
3664     gnu/kfreebsd)
3665         add_cppflags -D_BSD_SOURCE
3666         ;;
3667     gnu)
3668         ;;
3669     qnx)
3670         add_cppflags -D_QNX_SOURCE
3671         network_extralibs="-lsocket"
3672         ;;
3673     symbian)
3674         SLIBSUF=".dll"
3675         enable dos_paths
3676         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3677         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3678         add_ldflags -Wl,--target1-abs,--no-undefined \
3679                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3680                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3681         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3682                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3683                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3684         ;;
3685     osf1)
3686         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3687         ;;
3688     minix)
3689         ;;
3690     plan9)
3691         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3692                      -D_REENTRANT_SOURCE        \
3693                      -D_RESEARCH_SOURCE         \
3694                      -DFD_SETSIZE=96            \
3695                      -DHAVE_SOCK_OPTS
3696         add_compat strtod.o strtod=avpriv_strtod
3697         network_extralibs='-lbsd'
3698         exeobjs=compat/plan9/main.o
3699         cp_f='cp'
3700         ;;
3701     none)
3702         ;;
3703     *)
3704         die "Unknown OS '$target_os'."
3705         ;;
3706 esac
3707
3708 # determine libc flavour
3709
3710 probe_libc(){
3711     pfx=$1
3712     pfx_no_=${pfx%_}
3713     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3714     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3715         eval ${pfx}libc_type=uclibc
3716         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3717     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3718         eval ${pfx}libc_type=glibc
3719         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3720     # MinGW headers can be installed on Cygwin, so check for newlib first.
3721     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3722         eval ${pfx}libc_type=newlib
3723         add_${pfx}cppflags -U__STRICT_ANSI__
3724     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3725     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3726         eval ${pfx}libc_type=mingw64
3727         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3728         eval test \$${pfx_no_}cc_type = "gcc" &&
3729             add_${pfx}cppflags -D__printf__=__gnu_printf__
3730     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3731          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3732         eval ${pfx}libc_type=mingw32
3733         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3734             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3735             die "ERROR: MinGW32 runtime version must be >= 3.15."
3736         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3737         eval test \$${pfx_no_}cc_type = "gcc" &&
3738             add_${pfx}cppflags -D__printf__=__gnu_printf__
3739     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3740         eval ${pfx}libc_type=msvcrt
3741         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3742         # 0x601 by default unless something else is set by the user.
3743         # This can easily lead to us detecting functions only present
3744         # in such new versions and producing binaries requiring windows 7.0.
3745         # Therefore explicitly set the default to XP unless the user has
3746         # set something else on the command line.
3747         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3748             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3749     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3750         eval ${pfx}libc_type=klibc
3751     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3752         eval ${pfx}libc_type=bionic
3753     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3754         eval ${pfx}libc_type=solaris
3755         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3756     else
3757         eval ${pfx}libc_type=default
3758         add_${pfx}cppflags -D_DEFAULT_SOURCE
3759     fi
3760 }
3761
3762 probe_libc
3763 test -n "$libc_type" && enable libc_$libc_type
3764 probe_libc host_
3765 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3766
3767 case $libc_type in
3768     bionic)
3769         add_compat strtod.o strtod=avpriv_strtod
3770         ;;
3771     msvcrt)
3772         add_compat strtod.o strtod=avpriv_strtod
3773         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3774                                      _snprintf=avpriv_snprintf  \
3775                                      vsnprintf=avpriv_vsnprintf
3776         ;;
3777 esac
3778
3779 # hacks for compiler/libc/os combinations
3780
3781 if enabled_all tms470 libc_glibc; then
3782     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3783     add_cppflags -D__USER_LABEL_PREFIX__=
3784     add_cppflags -D__builtin_memset=memset
3785     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3786     add_cflags   -pds=48    # incompatible redefinition of macro
3787 fi
3788
3789 if enabled_all ccc libc_glibc; then
3790     add_ldflags -Wl,-z,now  # calls to libots crash without this
3791 fi
3792
3793 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3794     add_cppflags '-I\$(SRC_PATH)/compat/float'
3795
3796 esc(){
3797     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3798 }
3799
3800 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3801
3802 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3803
3804 set_default $PATHS_LIST
3805 set_default nm
3806
3807 # we need to build at least one lib type
3808 if ! enabled_any static shared; then
3809     cat <<EOF
3810 At least one library type must be built.
3811 Specify --enable-static to build the static libraries or --enable-shared to
3812 build the shared libraries as well. To only build the shared libraries specify
3813 --disable-static in addition to --enable-shared.
3814 EOF
3815     exit 1;
3816 fi
3817
3818 die_license_disabled() {
3819     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3820 }
3821
3822 die_license_disabled gpl libcdio
3823 die_license_disabled gpl libx264
3824 die_license_disabled gpl libx265
3825 die_license_disabled gpl libxavs
3826 die_license_disabled gpl libxvid
3827 die_license_disabled gpl x11grab
3828
3829 die_license_disabled nonfree libfaac
3830 die_license_disabled nonfree libfdk_aac
3831 die_license_disabled nonfree nvenc
3832 die_license_disabled nonfree openssl
3833
3834 die_license_disabled version3 libopencore_amrnb
3835 die_license_disabled version3 libopencore_amrwb
3836 die_license_disabled version3 libvo_aacenc
3837 die_license_disabled version3 libvo_amrwbenc
3838
3839 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3840
3841 disabled optimizations || check_cflags -fomit-frame-pointer
3842
3843 enable_weak_pic() {
3844     disabled pic && return
3845     enable pic
3846     add_cppflags -DPIC
3847     case "$target_os" in
3848     mingw*|cygwin*)
3849         ;;
3850     *)
3851         add_cflags -fPIC
3852         ;;
3853     esac
3854     add_asflags  -fPIC
3855 }
3856
3857 enabled pic && enable_weak_pic
3858
3859 check_cc <<EOF || die "Symbol mangling check failed."
3860 int ff_extern;
3861 EOF
3862 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3863 extern_prefix=${sym%%ff_extern*}
3864
3865 check_cc <<EOF && enable_weak inline_asm
3866 void foo(void) { __asm__ volatile ("" ::); }
3867 EOF
3868
3869 _restrict=
3870 for restrict_keyword in restrict __restrict__ __restrict; do
3871     check_cc <<EOF && _restrict=$restrict_keyword && break
3872 void foo(char * $restrict_keyword p);
3873 EOF
3874 done
3875
3876 check_cc <<EOF && enable pragma_deprecated
3877 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3878 EOF
3879
3880 check_cc <<EOF && enable attribute_packed
3881 struct { int x; } __attribute__((packed)) x;
3882 EOF
3883
3884 check_cc <<EOF && enable attribute_may_alias
3885 union { int x; } __attribute__((may_alias)) x;
3886 EOF
3887
3888 check_cc <<EOF || die "endian test failed"
3889 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3890 EOF
3891 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3892
3893 check_gas() {
3894     log "check_gas using '$as' as AS"
3895     # :vararg is used on aarch64, arm and ppc altivec
3896     check_as <<EOF || return 1
3897 .macro m n, y:vararg=0
3898 \n: .int \y
3899 .endm
3900 m x
3901 EOF
3902     # .altmacro is only used in arm asm
3903     ! enabled arm || check_as <<EOF || return 1
3904 .altmacro
3905 EOF
3906     enable gnu_as
3907     return 0
3908 }
3909
3910 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3911     nogas=:
3912     enabled_any arm aarch64 && nogas=die
3913     enabled_all ppc altivec && nogas=warn
3914     as_noop=-v
3915
3916     case $as_type in
3917         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3918         gcc)  gaspp_as_type=gas ;;
3919         *)    gaspp_as_type=$as_type ;;
3920     esac
3921
3922     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3923
3924     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3925         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3926
3927     if ! check_gas ; then
3928         as=${gas:=$as}
3929         check_gas || \
3930             $nogas "GNU assembler not found, install/update gas-preprocessor"
3931     fi
3932
3933     check_as <<EOF && enable as_func
3934 .func test
3935 .endfunc
3936 EOF
3937 fi
3938
3939 check_inline_asm inline_asm_labels '"1:\n"'
3940
3941 if enabled aarch64; then
3942     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3943     # internal assembler in clang 3.3 does not support this instruction
3944     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3945     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3946
3947     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3948
3949 elif enabled alpha; then
3950
3951     check_cflags -mieee
3952
3953 elif enabled arm; then
3954
3955     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3956     enabled thumb && check_cflags -mthumb || check_cflags -marm
3957
3958     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3959         enable vfp_args
3960     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3961         case "${cross_prefix:-$cc}" in
3962             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3963             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3964 __asm__ (".eabi_attribute 28, 1");
3965 int main(void) { return 0; }
3966 EOF
3967         esac
3968         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3969     fi
3970
3971     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3972     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3973     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3974     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3975     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3976     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3977
3978     [ $target_os = linux ] || [ $target_os = android ] ||
3979         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3980             $ARCH_EXT_LIST_ARM
3981
3982     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3983
3984     check_as <<EOF && enable as_dn_directive
3985 ra .dn d0.i16
3986 .unreq ra
3987 EOF
3988
3989     # llvm's integrated assembler supports .object_arch from llvm 3.5
3990     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
3991 .object_arch armv4
3992 EOF
3993
3994     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3995
3996 elif enabled mips; then
3997
3998     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3999
4000 elif enabled parisc; then
4001
4002     if enabled gcc; then
4003         case $($cc -dumpversion) in
4004             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4005         esac
4006     fi
4007
4008 elif enabled ppc; then
4009
4010     enable local_aligned_8 local_aligned_16
4011
4012     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4013     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4014     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4015     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4016
4017     # AltiVec flags: The FSF version of GCC differs from the Apple version
4018     if enabled altivec; then
4019         check_cflags -maltivec -mabi=altivec &&
4020         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4021         check_cflags -faltivec
4022
4023         # check if our compiler supports Motorola AltiVec C API
4024         check_cc <<EOF || disable altivec
4025 $inc_altivec_h
4026 int main(void) {
4027     vector signed int v1 = (vector signed int) { 0 };
4028     vector signed int v2 = (vector signed int) { 1 };
4029     v1 = vec_add(v1, v2);
4030     return 0;
4031 }
4032 EOF
4033
4034         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4035     fi
4036
4037     if enabled vsx; then
4038         check_cflags -mvsx &&
4039         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4040     fi
4041
4042     if enabled power8; then
4043         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4044     fi
4045
4046 elif enabled x86; then
4047
4048     check_builtin rdtsc    intrin.h   "__rdtsc()"
4049     check_builtin mm_empty mmintrin.h "_mm_empty()"
4050
4051     enable local_aligned_8 local_aligned_16
4052
4053     # check whether EBP is available on x86
4054     # As 'i' is stored on the stack, this program will crash
4055     # if the base pointer is used to access it because the
4056     # base pointer is cleared in the inline assembly code.
4057     check_exec_crash <<EOF && enable ebp_available
4058 volatile int i=0;
4059 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4060 return i;
4061 EOF
4062
4063     # check whether EBX is available on x86
4064     check_inline_asm ebx_available '""::"b"(0)' &&
4065         check_inline_asm ebx_available '"":::"%ebx"'
4066
4067     # check whether xmm clobbers are supported
4068     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4069
4070     # check whether binutils is new enough to compile SSSE3/MMXEXT
4071     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4072     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4073
4074     if ! disabled_any asm mmx yasm; then
4075         if check_cmd $yasmexe --version; then
4076             enabled x86_64 && yasm_extra="-m amd64"
4077             yasm_debug="-g dwarf2"
4078         elif check_cmd nasm -v; then
4079             yasmexe=nasm
4080             yasm_debug="-g -F dwarf"
4081             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4082         fi
4083
4084         YASMFLAGS="-f $objformat $yasm_extra"
4085         enabled pic               && append YASMFLAGS "-DPIC"
4086         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4087         case "$objformat" in
4088             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4089         esac
4090
4091         check_yasm "movbe ecx, [5]" && enable yasm ||
4092             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4093         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4094         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4095         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4096         check_yasm "CPU amdnop" || disable cpunop
4097     fi
4098
4099     case "$cpu" in
4100         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4101             disable fast_clz
4102         ;;
4103     esac
4104
4105 fi
4106
4107 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4108
4109 check_ldflags -Wl,--as-needed
4110
4111 if check_func dlopen; then
4112     ldl=
4113 elif check_func dlopen -ldl; then
4114     ldl=-ldl
4115 fi
4116
4117 if ! disabled network; then
4118     check_func getaddrinfo $network_extralibs
4119     check_func getservbyport $network_extralibs
4120     check_func inet_aton $network_extralibs
4121
4122     check_type netdb.h "struct addrinfo"
4123     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4124     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4125     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4126     check_type poll.h "struct pollfd"
4127     check_type netinet/sctp.h "struct sctp_event_subscribe"
4128     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4129     check_type netinet/in.h "struct sockaddr_in6"
4130     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4131     check_type "sys/types.h sys/socket.h" socklen_t
4132
4133     # Prefer arpa/inet.h over winsock2
4134     if check_header arpa/inet.h ; then
4135         check_func closesocket
4136     elif check_header winsock2.h ; then
4137         check_func_headers winsock2.h closesocket -lws2 &&
4138             network_extralibs="-lws2" ||
4139         { check_func_headers winsock2.h closesocket -lws2_32 &&
4140             network_extralibs="-lws2_32"; } || disable winsock2_h network
4141         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4142
4143         check_type ws2tcpip.h socklen_t
4144         check_type ws2tcpip.h "struct addrinfo"
4145         check_type ws2tcpip.h "struct group_source_req"
4146         check_type ws2tcpip.h "struct ip_mreq_source"
4147         check_type ws2tcpip.h "struct ipv6_mreq"
4148         check_type winsock2.h "struct pollfd"
4149         check_struct winsock2.h "struct sockaddr" sa_len
4150         check_type ws2tcpip.h "struct sockaddr_in6"
4151         check_type ws2tcpip.h "struct sockaddr_storage"
4152     else
4153         disable network
4154     fi
4155 fi
4156
4157 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4158 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4159 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4160 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4161
4162 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4163 check_func  ${malloc_prefix}memalign            && enable memalign
4164 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4165
4166 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4167     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4168
4169 check_func  fcntl
4170 check_func  fork
4171 check_func  gethrtime
4172 check_func  getopt
4173 check_func  getrusage
4174 check_func  gettimeofday
4175 check_func  gmtime_r
4176 check_func  isatty
4177 check_func  localtime_r
4178 check_func  mach_absolute_time
4179 check_func  mkstemp
4180 check_func  mmap
4181 check_func  mprotect
4182 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4183 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4184 check_func  sched_getaffinity
4185 check_func  setrlimit
4186 check_func  strerror_r
4187 check_func  sysconf
4188 check_func  sysctl
4189 check_func  usleep
4190
4191 check_func_headers io.h setmode
4192 check_func_headers stdlib.h getenv
4193
4194 check_func_headers windows.h CoTaskMemFree -lole32
4195 check_func_headers windows.h GetProcessAffinityMask
4196 check_func_headers windows.h GetProcessTimes
4197 check_func_headers windows.h GetSystemTimeAsFileTime
4198 check_func_headers windows.h LoadLibrary
4199 check_func_headers windows.h MapViewOfFile
4200 check_func_headers windows.h SetConsoleTextAttribute
4201 check_func_headers windows.h Sleep
4202 check_func_headers windows.h VirtualAlloc
4203 check_struct windows.h "CONDITION_VARIABLE" Ptr
4204
4205 check_header direct.h
4206 check_header dlfcn.h
4207 check_header d3d11.h
4208 check_header dxva.h
4209 check_header dxva2api.h
4210 check_header io.h
4211 check_header mach/mach_time.h
4212 check_header malloc.h
4213 check_header poll.h
4214 check_header sys/mman.h
4215 check_header sys/param.h
4216 check_header sys/resource.h
4217 check_header sys/select.h
4218 check_header sys/time.h
4219 check_header sys/un.h
4220 check_header unistd.h
4221 check_header valgrind/valgrind.h
4222 check_header vdpau/vdpau.h
4223 check_header vdpau/vdpau_x11.h
4224 check_header VideoDecodeAcceleration/VDADecoder.h
4225 check_header windows.h
4226 check_header X11/extensions/XvMClib.h
4227
4228 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4229 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4230 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4231
4232 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4233
4234 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4235 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4236 check_type d3d9.h LPDIRECT3DSURFACE9
4237
4238 if ! disabled w32threads && ! enabled pthreads; then
4239     check_func_headers "windows.h process.h" _beginthreadex &&
4240         enable w32threads || disable w32threads
4241 fi
4242
4243 # check for some common methods of building with pthread support
4244 # do this before the optional library checks as some of them require pthreads
4245 if ! disabled pthreads && ! enabled w32threads; then
4246     enable pthreads
4247     if check_func pthread_join -pthread; then
4248         add_cflags -pthread
4249         add_extralibs -pthread
4250     elif check_func pthread_join -pthreads; then
4251         add_cflags -pthreads
4252         add_extralibs -pthreads
4253     elif check_func pthread_join -lpthreadGC2; then
4254         add_extralibs -lpthreadGC2
4255     elif check_lib pthread.h pthread_join -lpthread; then
4256         :
4257     elif ! check_func pthread_join; then
4258         disable pthreads
4259     fi
4260 fi
4261
4262 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4263 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4264
4265 check_lib math.h sin -lm && LIBM="-lm"
4266 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4267
4268 atan2f_args=2
4269 ldexpf_args=2
4270 powf_args=2
4271
4272 for func in $MATH_FUNCS; do
4273     eval check_mathfunc $func \${${func}_args:-1}
4274 done
4275
4276 # these are off by default, so fail if requested and not available
4277 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4278                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4279                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4280 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4281 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4282 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4283 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4284 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4285 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4286 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4287 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4288 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4289                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4290                                done || die "ERROR: libgsm not found"; }
4291 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4292 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4293 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4294 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4295 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4296 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4297 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4298 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4299                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4300 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4301 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4302 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4303 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4304 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4305 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4306 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4307 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4308 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4309 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4310 enabled libvpx            && {
4311     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4312                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4313     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4314                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4315     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4316     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4317 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4318 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4319 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4320                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4321                                die "ERROR: libx264 version must be >= 0.118."; }
4322 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4323                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4324                                die "ERROR: libx265 version must be >= 57."; }
4325 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4326 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4327 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4328                                 { ! enabled cross_compile && {
4329                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4330                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4331                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4332                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4333                                die "ERROR: mmal not found"; }
4334 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4335                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4336                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4337                                die "ERROR: openssl not found"; }
4338
4339 if enabled gnutls; then
4340     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4341     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4342 fi
4343
4344 # libdc1394 check
4345 if enabled libdc1394; then
4346     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4347         enable libdc1394_2; } ||
4348     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4349         enable libdc1394_1; } ||
4350     die "ERROR: No version of libdc1394 found "
4351 fi
4352
4353 if enabled nvenc; then
4354     check_header cuda.h || die "ERROR: cuda.h not found.";
4355     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found.";
4356     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
4357         die "ERROR: NVENC API version 4 or older is not supported";
4358 fi
4359
4360 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4361     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4362     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4363     enable sdl
4364 fi
4365
4366 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4367 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4368
4369 check_header linux/fb.h
4370 check_header linux/videodev2.h
4371 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4372
4373 check_header sys/videoio.h
4374
4375 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4376 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4377 # w32api 3.12 had it defined wrong
4378 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4379
4380 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4381 { check_header dev/bktr/ioctl_meteor.h &&
4382   check_header dev/bktr/ioctl_bt848.h; } ||
4383 { check_header machine/ioctl_meteor.h &&
4384   check_header machine/ioctl_bt848.h; } ||
4385 { check_header dev/video/meteor/ioctl_meteor.h &&
4386   check_header dev/video/bktr/ioctl_bt848.h; } ||
4387 check_header dev/ic/bt8xx.h
4388
4389 check_header sndio.h
4390 check_header sys/soundcard.h
4391 check_header soundcard.h
4392
4393 enabled_any alsa_indev alsa_outdev &&
4394     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4395
4396 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4397     check_func jack_port_get_latency_range -ljack
4398
4399 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4400
4401 if enabled libcdio; then
4402     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4403     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4404     die "ERROR: No usable libcdio/cdparanoia found"
4405 fi
4406
4407 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4408
4409 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
4410     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4411         enabled libxcb && die "ERROR: libxcb not found";
4412     } && disable x11grab && enable libxcb
4413
4414     disabled libxcb_shm ||
4415         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4416             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4417         } && check_header sys/shm.h && enable libxcb_shm
4418
4419     disabled libxcb_xfixes ||
4420         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4421             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4422         } && enable libxcb_xfixes
4423
4424     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4425     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4426 fi
4427
4428 if enabled x11grab; then
4429     enabled xlib || die "ERROR: Xlib not found"
4430     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
4431     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4432 fi
4433
4434 enabled d3d11_h &&
4435     check_cc <<EOF && enable d3d11_cobj
4436 #define _WIN32_WINNT 0x0600
4437 #define COBJMACROS
4438 #include <windows.h>
4439 #include <d3d11.h>
4440 int main(void) { ID3D11VideoDecoder *o = NULL; ID3D11VideoDecoder_Release(o); return 0; }
4441 EOF
4442
4443 enabled vaapi && enabled xlib &&
4444     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4445     enable vaapi_x11
4446
4447 enabled vdpau &&
4448     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4449     disable vdpau
4450
4451 enabled vdpau && enabled xlib &&
4452     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4453     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4454     enable vdpau_x11
4455
4456 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4457
4458 # add some useful compiler flags if supported
4459 check_cflags -Wdeclaration-after-statement
4460 check_cflags -Wall
4461 check_cflags -Wdisabled-optimization
4462 check_cflags -Wpointer-arith
4463 check_cflags -Wredundant-decls
4464 check_cflags -Wcast-qual
4465 check_cflags -Wwrite-strings
4466 check_cflags -Wtype-limits
4467 check_cflags -Wundef
4468 check_cflags -Wmissing-prototypes
4469 check_cflags -Wstrict-prototypes
4470 enabled extra_warnings && check_cflags -Winline
4471
4472 check_disable_warning(){
4473     warning_flag=-W${1#-Wno-}
4474     test_cflags $warning_flag && add_cflags $1
4475 }
4476
4477 check_disable_warning -Wno-parentheses
4478 check_disable_warning -Wno-switch
4479 check_disable_warning -Wno-format-zero-length
4480 check_disable_warning -Wno-pointer-sign
4481
4482 # add some linker flags
4483 check_ldflags -Wl,--warn-common
4484 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4485 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4486 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4487
4488 # add some strip flags
4489 # -wN '..@*' is more selective than -x, but not available everywhere.
4490 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4491
4492 enabled neon_clobber_test &&
4493     check_ldflags -Wl,--wrap,avcodec_open2              \
4494                   -Wl,--wrap,avcodec_decode_audio4      \
4495                   -Wl,--wrap,avcodec_decode_video2      \
4496                   -Wl,--wrap,avcodec_decode_subtitle2   \
4497                   -Wl,--wrap,avcodec_encode_audio2      \
4498                   -Wl,--wrap,avcodec_encode_video2      \
4499                   -Wl,--wrap,avcodec_encode_subtitle    \
4500                   -Wl,--wrap,avresample_convert ||
4501     disable neon_clobber_test
4502
4503 enabled xmm_clobber_test &&
4504     check_ldflags -Wl,--wrap,avcodec_open2              \
4505                   -Wl,--wrap,avcodec_decode_audio4      \
4506                   -Wl,--wrap,avcodec_decode_video2      \
4507                   -Wl,--wrap,avcodec_decode_subtitle2   \
4508                   -Wl,--wrap,avcodec_encode_audio2      \
4509                   -Wl,--wrap,avcodec_encode_video2      \
4510                   -Wl,--wrap,avcodec_encode_subtitle    \
4511                   -Wl,--wrap,avresample_convert         \
4512                   -Wl,--wrap,sws_scale ||
4513     disable xmm_clobber_test
4514
4515 echo "X{};" > $TMPV
4516 if test_ldflags -Wl,--version-script,$TMPV; then
4517     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4518     check_cc <<EOF && enable symver_asm_label
4519 void ff_foo(void) __asm__ ("av_foo@VERSION");
4520 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4521 EOF
4522     check_cc <<EOF && enable symver_gnu_asm
4523 __asm__(".symver ff_foo,av_foo@VERSION");
4524 void ff_foo(void) {}
4525 EOF
4526 fi
4527
4528 if [ -z "$optflags" ]; then
4529     if enabled small; then
4530         optflags=$cflags_size
4531     elif enabled optimizations; then
4532         optflags=$cflags_speed
4533     else
4534         optflags=$cflags_noopt
4535     fi
4536 fi
4537
4538 check_optflags(){
4539     check_cflags "$@"
4540     enabled lto && check_ldflags "$@"
4541 }
4542
4543
4544 if enabled lto; then
4545     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4546     check_cflags  -flto
4547     check_ldflags -flto $cpuflags
4548 fi
4549
4550 check_optflags $optflags
4551 check_optflags -fno-math-errno
4552 check_optflags -fno-signed-zeros
4553
4554 if enabled icc; then
4555     # Just warnings, no remarks
4556     check_cflags -w1
4557     # -wd: Disable following warnings
4558     # 144, 167, 556: -Wno-pointer-sign
4559     # 1292: attribute "foo" ignored
4560     # 1419: external declaration in primary source file
4561     # 10006: ignoring unknown option -fno-signed-zeros
4562     # 10148: ignoring unknown option -Wno-parentheses
4563     # 10156: ignoring option '-W'; no argument required
4564     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4565     # 11030: Warning unknown option --as-needed
4566     # 10156: ignoring option '-export'; no argument required
4567     check_ldflags -wd10156,11030
4568     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4569     enable ebp_available
4570     if enabled x86_32; then
4571         icc_version=$($cc -dumpversion)
4572         test ${icc_version%%.*} -ge 11 &&
4573             check_cflags -falign-stack=maintain-16-byte ||
4574             disable aligned_stack
4575     fi
4576 elif enabled ccc; then
4577     # disable some annoying warnings
4578     add_cflags -msg_disable bitnotint
4579     add_cflags -msg_disable mixfuncvoid
4580     add_cflags -msg_disable nonstandcast
4581     add_cflags -msg_disable unsupieee
4582 elif enabled gcc; then
4583     check_optflags -fno-tree-vectorize
4584     check_cflags -Werror=implicit-function-declaration
4585     check_cflags -Werror=missing-prototypes
4586     check_cflags -Werror=return-type
4587     check_cflags -Werror=declaration-after-statement
4588     check_cflags -Werror=vla
4589     check_cflags -Werror=format-security
4590     check_cflags -fdiagnostics-color=auto
4591     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4592 elif enabled llvm_gcc; then
4593     check_cflags -mllvm -stack-alignment=16
4594 elif enabled clang; then
4595     check_cflags -mllvm -stack-alignment=16
4596     check_cflags -Qunused-arguments
4597     check_cflags -Werror=implicit-function-declaration
4598     check_cflags -Werror=missing-prototypes
4599     check_cflags -Werror=return-type
4600 elif enabled cparser; then
4601     add_cflags -Wno-missing-variable-declarations
4602     add_cflags -Wno-empty-statement
4603 elif enabled armcc; then
4604     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4605     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4606     # 2523: use of inline assembly is deprecated
4607     add_cflags -W${armcc_opt},--diag_suppress=2523
4608     add_cflags -W${armcc_opt},--diag_suppress=1207
4609     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4610     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4611     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4612     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4613 elif enabled tms470; then
4614     add_cflags -pds=824 -pds=837
4615     disable inline_asm
4616 elif enabled pathscale; then
4617     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4618 elif enabled_any msvc icl; then
4619     enabled x86_32 && disable aligned_stack
4620     enabled_all x86_32 debug && add_cflags -Oy-
4621     enabled debug && add_ldflags -debug
4622     enable pragma_deprecated
4623     if enabled icl; then
4624         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4625         # (correctly) on icl 13.x.
4626         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4627             add_cflags -Qansi-alias
4628         # icl will pass the inline asm tests but inline asm is currently
4629         # not supported (build will fail)
4630         disable inline_asm
4631     fi
4632     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
4633     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
4634 fi
4635
4636 case $as_type in
4637     clang)
4638         add_asflags -Qunused-arguments
4639     ;;
4640 esac
4641
4642 case $ld_type in
4643     clang)
4644         check_ldflags -Qunused-arguments
4645     ;;
4646 esac
4647
4648 case $target_os in
4649     osf1)
4650         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4651     ;;
4652     plan9)
4653         add_cppflags -Dmain=plan9_main
4654     ;;
4655 esac
4656
4657 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4658
4659 check_deps $CONFIG_LIST       \
4660            $CONFIG_EXTRA      \
4661            $HAVE_LIST         \
4662            $ALL_COMPONENTS    \
4663
4664 enabled_all d3d11va d3d11_cobj CoTaskMemFree &&
4665     prepend avconv_libs $($ldflags_filter "-lole32") &&
4666     enable d3d11va_lib
4667
4668 enabled_all dxva2 CoTaskMemFree &&
4669     prepend avconv_libs $($ldflags_filter "-lole32") &&
4670     enable dxva2_lib
4671
4672 ! enabled_any memalign posix_memalign aligned_malloc &&
4673     enabled simd_align_16 && enable memalign_hack
4674
4675 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
4676
4677 for thread in $THREADS_LIST; do
4678     if enabled $thread; then
4679         test -n "$thread_type" &&
4680             die "ERROR: Only one thread type must be selected." ||
4681             thread_type="$thread"
4682     fi
4683 done
4684
4685 enabled zlib && add_cppflags -DZLIB_CONST
4686
4687 # conditional library dependencies, in linking order
4688 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4689 enabled resample_filter && prepend avfilter_deps "avresample"
4690 enabled scale_filter    && prepend avfilter_deps "swscale"
4691
4692 enabled opus_decoder    && prepend avcodec_deps "avresample"
4693
4694 expand_deps(){
4695     lib_deps=${1}_deps
4696     eval "deps=\$$lib_deps"
4697     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4698     unique $lib_deps
4699 }
4700
4701 map 'expand_deps $v' $LIBRARY_LIST
4702
4703 echo "install prefix            $prefix"
4704 echo "source path               $source_path"
4705 echo "C compiler                $cc"
4706 echo "C library                 $libc_type"
4707 if test "$host_cc" != "$cc"; then
4708     echo "host C compiler           $host_cc"
4709     echo "host C library            $host_libc_type"
4710 fi
4711 echo "ARCH                      $arch ($cpu)"
4712 if test "$build_suffix" != ""; then
4713     echo "build suffix              $build_suffix"
4714 fi
4715 if test "$extra_version" != ""; then
4716     echo "version string suffix     $extra_version"
4717 fi
4718 echo "big-endian                ${bigendian-no}"
4719 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4720 if enabled x86; then
4721     echo "${yasmexe}                      ${yasm-no}"
4722     echo "MMX enabled               ${mmx-no}"
4723     echo "MMXEXT enabled            ${mmxext-no}"
4724     echo "3DNow! enabled            ${amd3dnow-no}"
4725     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4726     echo "SSE enabled               ${sse-no}"
4727     echo "SSSE3 enabled             ${ssse3-no}"
4728     echo "AVX enabled               ${avx-no}"
4729     echo "XOP enabled               ${xop-no}"
4730     echo "FMA3 enabled              ${fma3-no}"
4731     echo "FMA4 enabled              ${fma4-no}"
4732     echo "i686 features enabled     ${i686-no}"
4733     echo "CMOV is fast              ${fast_cmov-no}"
4734     echo "EBX available             ${ebx_available-no}"
4735     echo "EBP available             ${ebp_available-no}"
4736 fi
4737 if enabled aarch64; then
4738     echo "NEON enabled              ${neon-no}"
4739     echo "VFP enabled               ${vfp-no}"
4740 fi
4741 if enabled arm; then
4742     echo "ARMv5TE enabled           ${armv5te-no}"
4743     echo "ARMv6 enabled             ${armv6-no}"
4744     echo "ARMv6T2 enabled           ${armv6t2-no}"
4745     echo "VFP enabled               ${vfp-no}"
4746     echo "NEON enabled              ${neon-no}"
4747 fi
4748 if enabled ppc; then
4749     echo "AltiVec enabled           ${altivec-no}"
4750     echo "VSX enabled               ${vsx-no}"
4751     echo "POWER8 enabled            ${power8-no}"
4752     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4753     echo "dcbzl available           ${dcbzl-no}"
4754 fi
4755 echo "debug symbols             ${debug-no}"
4756 echo "optimize for size         ${small-no}"
4757 echo "optimizations             ${optimizations-no}"
4758 echo "static                    ${static-no}"
4759 echo "shared                    ${shared-no}"
4760 echo "new filter support        ${avfilter-no}"
4761 echo "network support           ${network-no}"
4762 echo "threading support         ${thread_type-no}"
4763 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4764 echo "SDL support               ${sdl-no}"
4765 test -n "$random_seed" &&
4766     echo "random seed               ${random_seed}"
4767 echo
4768
4769 echo "External libraries:"
4770 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4771 echo
4772
4773 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4774     echo "Enabled ${type}s:"
4775     eval list=\$$(toupper $type)_LIST
4776     print_enabled '_*' $list | print_3_columns
4777     echo
4778 done
4779
4780 license="LGPL version 2.1 or later"
4781 if enabled nonfree; then
4782     license="nonfree and unredistributable"
4783 elif enabled gplv3; then
4784     license="GPL version 3 or later"
4785 elif enabled lgplv3; then
4786     license="LGPL version 3 or later"
4787 elif enabled gpl; then
4788     license="GPL version 2 or later"
4789 fi
4790
4791 echo "License: $license"
4792
4793 echo "Creating config.mak and config.h..."
4794
4795 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4796
4797 config_files="$TMPH config.mak"
4798
4799 cat > config.mak <<EOF
4800 # Automatically generated by configure - do not modify!
4801 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4802 prefix=$prefix
4803 LIBDIR=\$(DESTDIR)$libdir
4804 SHLIBDIR=\$(DESTDIR)$shlibdir
4805 INCDIR=\$(DESTDIR)$incdir
4806 BINDIR=\$(DESTDIR)$bindir
4807 DATADIR=\$(DESTDIR)$datadir
4808 DOCDIR=\$(DESTDIR)$docdir
4809 MANDIR=\$(DESTDIR)$mandir
4810 SRC_PATH=$source_path
4811 CC_IDENT=$cc_ident
4812 ARCH=$arch
4813 INTRINSICS=$intrinsics
4814 CC=$cc
4815 AS=$as
4816 LD=$ld
4817 DEPCC=$dep_cc
4818 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4819 DEPAS=$as
4820 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4821 YASM=$yasmexe
4822 DEPYASM=$yasmexe
4823 AR=$ar
4824 ARFLAGS=$arflags
4825 AR_O=$ar_o
4826 RANLIB=$ranlib
4827 STRIP=$strip
4828 LN_S=$ln_s
4829 CPPFLAGS=$CPPFLAGS
4830 CFLAGS=$CFLAGS
4831 ASFLAGS=$ASFLAGS
4832 AS_C=$AS_C
4833 AS_O=$AS_O
4834 CC_C=$CC_C
4835 CC_E=$CC_E
4836 CC_O=$CC_O
4837 LD_O=$LD_O
4838 LD_LIB=$LD_LIB
4839 LD_PATH=$LD_PATH
4840 DLLTOOL=$dlltool
4841 LDFLAGS=$LDFLAGS
4842 LDEXEFLAGS=$LDEXEFLAGS
4843 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4844 STRIPFLAGS=$STRIPFLAGS
4845 YASMFLAGS=$YASMFLAGS
4846 BUILDSUF=$build_suffix
4847 FULLNAME=$FULLNAME
4848 LIBPREF=$LIBPREF
4849 LIBSUF=$LIBSUF
4850 LIBNAME=$LIBNAME
4851 SLIBPREF=$SLIBPREF
4852 SLIBSUF=$SLIBSUF
4853 EXESUF=$EXESUF
4854 EXTRA_VERSION=$extra_version
4855 CCDEP=$CCDEP
4856 CCDEP_FLAGS=$CCDEP_FLAGS
4857 ASDEP=$ASDEP
4858 ASDEP_FLAGS=$ASDEP_FLAGS
4859 CC_DEPFLAGS=$CC_DEPFLAGS
4860 AS_DEPFLAGS=$AS_DEPFLAGS
4861 HOSTCC=$host_cc
4862 HOSTLD=$host_ld
4863 HOSTCFLAGS=$host_cflags
4864 HOSTCPPFLAGS=$host_cppflags
4865 HOSTEXESUF=$HOSTEXESUF
4866 HOSTLDFLAGS=$host_ldflags
4867 HOSTLIBS=$host_libs
4868 DEPHOSTCC=$host_cc
4869 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4870 HOSTCCDEP=$HOSTCCDEP
4871 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4872 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4873 HOSTCC_C=$HOSTCC_C
4874 HOSTCC_O=$HOSTCC_O
4875 HOSTLD_O=$HOSTLD_O
4876 TARGET_EXEC=$target_exec $target_exec_args
4877 TARGET_PATH=$target_path
4878 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4879 CFLAGS-avplay=$sdl_cflags
4880 ZLIB=$($ldflags_filter -lz)
4881 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4882 EXTRALIBS=$extralibs
4883 COMPAT_OBJS=$compat_objs
4884 EXEOBJS=$exeobjs
4885 INSTALL=install
4886 LIBTARGET=${LIBTARGET}
4887 SLIBNAME=${SLIBNAME}
4888 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4889 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4890 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4891 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4892 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4893 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4894 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4895 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4896 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4897 EOF
4898
4899 get_version(){
4900     lcname=lib${1}
4901     name=$(toupper $lcname)
4902     file=$source_path/$lcname/version.h
4903     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4904     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4905     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4906     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4907     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4908 }
4909
4910 map 'get_version $v' $LIBRARY_LIST
4911
4912 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4913
4914 print_program_libs(){
4915     eval "program_libs=\$${1}_libs"
4916     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4917 }
4918
4919 map 'print_program_libs $v' $PROGRAM_LIST
4920
4921 cat > $TMPH <<EOF
4922 /* Automatically generated by configure - do not modify! */
4923 #ifndef LIBAV_CONFIG_H
4924 #define LIBAV_CONFIG_H
4925 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4926 #define LIBAV_LICENSE "$(c_escape $license)"
4927 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4928 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4929 #define restrict $_restrict
4930 #define EXTERN_PREFIX "${extern_prefix}"
4931 #define EXTERN_ASM ${extern_prefix}
4932 #define SLIBSUF "$SLIBSUF"
4933 EOF
4934
4935 test -n "$malloc_prefix" &&
4936     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4937
4938 if enabled yasm; then
4939     append config_files $TMPASM
4940     printf '' >$TMPASM
4941 fi
4942
4943 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4944
4945 print_config ARCH_   "$config_files" $ARCH_LIST
4946 print_config HAVE_   "$config_files" $HAVE_LIST
4947 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4948                                      $CONFIG_EXTRA      \
4949                                      $ALL_COMPONENTS    \
4950
4951 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4952
4953 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4954 cp_if_changed $TMPH config.h
4955 touch .config
4956
4957 enabled yasm && cp_if_changed $TMPASM config.asm
4958
4959 cat > $TMPH <<EOF
4960 /* Generated by ffconf */
4961 #ifndef AVUTIL_AVCONFIG_H
4962 #define AVUTIL_AVCONFIG_H
4963 EOF
4964
4965 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4966
4967 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4968
4969 cp_if_changed $TMPH libavutil/avconfig.h
4970
4971 test -n "$WARNINGS" && printf "\n$WARNINGS"
4972
4973 # build pkg-config files
4974
4975 lib_version(){
4976     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4977 }
4978
4979 pkgconfig_generate(){
4980     name=$1
4981     shortname=${name#lib}${build_suffix}
4982     comment=$2
4983     version=$3
4984     libs=$4
4985     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
4986     requires=${requires%, }
4987     enabled ${name#lib} || return 0
4988     mkdir -p $name
4989     cat <<EOF > $name/$name.pc
4990 prefix=$prefix
4991 exec_prefix=\${prefix}
4992 libdir=$libdir
4993 includedir=$incdir
4994
4995 Name: $name
4996 Description: $comment
4997 Version: $version
4998 Requires: $(enabled shared || echo $requires)
4999 Requires.private: $(enabled shared && echo $requires)
5000 Conflicts:
5001 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
5002 Libs.private: $(enabled shared && echo $libs)
5003 Cflags: -I\${includedir}
5004 EOF
5005     cat <<EOF > $name/$name-uninstalled.pc
5006 prefix=
5007 exec_prefix=
5008 libdir=\${pcfiledir}
5009 includedir=${source_path}
5010
5011 Name: $name
5012 Description: $comment
5013 Version: $version
5014 Requires: $requires
5015 Conflicts:
5016 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
5017 Cflags: -I\${includedir}
5018 EOF
5019 }
5020
5021 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
5022 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
5023 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
5024 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
5025 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
5026 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$LIBM"
5027 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"