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-libsnappy       enable Snappy compression [no]
 206   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 207   --enable-libtheora       enable Theora encoding via libtheora [no]
 208   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 209   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 210   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 211   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
 212   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 213   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 214   --enable-libwebp         enable WebP encoding via libwebp [no]
 215   --enable-libx264         enable H.264 encoding via x264 [no]
 216   --enable-libx265         enable HEVC encoding via x265 [no]
 217   --enable-libxavs         enable AVS encoding via xavs [no]
 218   --enable-libxcb          enable X11 grabbing using XCB [no]
 219   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
 220   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
 221   --enable-libxvid         enable Xvid encoding via xvidcore,
 222                            native MPEG-4/Xvid encoder exists [no]
 223   --enable-mmal            enable decoding via MMAL [no]
 224   --enable-nvenc           enable encoding via NVENC [no]
 225   --enable-openssl         enable openssl [no]
 226   --enable-x11grab         enable X11 grabbing (legacy) [no]
 227   --enable-zlib            enable zlib [autodetect]
 228
 229 Toolchain options:
 230   --arch=ARCH              select architecture [$arch]
 231   --cpu=CPU                select the minimum required CPU (affects
 232                            instruction selection, may crash on older CPUs)
 233   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 234   --enable-cross-compile   assume a cross-compiler is used
 235   --sysroot=PATH           root of cross-build tree
 236   --sysinclude=PATH        location of cross-build system headers
 237   --target-os=OS           compiler targets OS [$target_os]
 238   --target-exec=CMD        command to run executables on target
 239   --target-path=DIR        path to view of build directory on target
 240   --target-samples=DIR     path to samples directory on target
 241   --toolchain=NAME         set tool defaults according to NAME
 242   --nm=NM                  use nm tool
 243   --ar=AR                  use archive tool AR [$ar_default]
 244   --as=AS                  use assembler AS [$as_default]
 245   --cc=CC                  use C compiler CC [$cc_default]
 246   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 247   --ld=LD                  use linker LD
 248   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 249   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 250   --host-cc=HOSTCC         use host C compiler HOSTCC
 251   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 252   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 253   --host-ld=HOSTLD         use host linker HOSTLD
 254   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 255   --host-libs=HLIBS        use libs HLIBS when linking for host
 256   --host-os=OS             compiler host OS [$target_os]
 257   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 258   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 259   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 260   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 261   --extra-version=STRING   version string suffix []
 262   --optflags=OPTFLAGS      override optimization-related compiler flags
 263   --build-suffix=SUFFIX    library name suffix []
 264   --enable-pic             build position-independent code
 265   --enable-thumb           compile for Thumb instruction set
 266   --enable-lto             use link-time optimization
 267   --env="ENV=override"     override the environment variables
 268
 269 Advanced options (experts only):
 270   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 271   --disable-symver         disable symbol versioning
 272   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 273   --disable-safe-bitstream-reader
 274                            disable buffer boundary checking in bitreaders
 275                            (faster, but may crash)
 276   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 277   --enable-sram            allow use of on-chip SRAM
 278
 279 Optimization options (experts only):
 280   --disable-asm            disable all assembly optimizations
 281   --disable-altivec        disable AltiVec optimizations
 282   --disable-vsx            disable VSX optimizations
 283   --disable-power8         disable POWER8 optimizations
 284   --disable-amd3dnow       disable 3DNow! optimizations
 285   --disable-amd3dnowext    disable 3DNow! extended optimizations
 286   --disable-mmx            disable MMX optimizations
 287   --disable-mmxext         disable MMXEXT optimizations
 288   --disable-sse            disable SSE optimizations
 289   --disable-sse2           disable SSE2 optimizations
 290   --disable-sse3           disable SSE3 optimizations
 291   --disable-ssse3          disable SSSE3 optimizations
 292   --disable-sse4           disable SSE4 optimizations
 293   --disable-sse42          disable SSE4.2 optimizations
 294   --disable-avx            disable AVX optimizations
 295   --disable-xop            disable XOP optimizations
 296   --disable-fma3           disable FMA3 optimizations
 297   --disable-fma4           disable FMA4 optimizations
 298   --disable-avx2           disable AVX2 optimizations
 299   --disable-armv5te        disable armv5te optimizations
 300   --disable-armv6          disable armv6 optimizations
 301   --disable-armv6t2        disable armv6t2 optimizations
 302   --disable-vfp            disable VFP optimizations
 303   --disable-neon           disable NEON optimizations
 304   --disable-inline-asm     disable use of inline assembly
 305   --disable-yasm           disable use of nasm/yasm assembly
 306
 307 Developer options (useful when working on Libav itself):
 308   --disable-debug          disable debugging symbols
 309   --enable-debug=LEVEL     set the debug level [$debuglevel]
 310   --disable-optimizations  disable compiler optimizations
 311   --enable-extra-warnings  enable more compiler warnings
 312   --samples=PATH           location of test samples for FATE, if not set use
 313                            \$LIBAV_SAMPLES at make invocation time.
 314   --enable-neon-clobber-test check NEON registers for clobbering (should be
 315                            used only for debugging purposes)
 316   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 317                            should be used only for debugging purposes)
 318   --enable-random          randomly enable/disable components
 319   --disable-random
 320   --enable-random=LIST     randomly enable/disable specific components or
 321   --disable-random=LIST    component groups. LIST is a comma-separated list
 322                            of NAME[:PROB] entries where NAME is a component
 323                            (group) and PROB the probability associated with
 324                            NAME (default 0.5).
 325   --random-seed=VALUE      seed value for --enable/disable-random
 326   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 327                            (only applies to --disable-optimizations builds)
 328
 329 NOTE: Object files are built at the place where configure is launched.
 330 EOF
 331   exit 0
 332 }
 333
 334 quotes='""'
 335
 336 log(){
 337     echo "$@" >> $logfile
 338 }
 339
 340 log_file(){
 341     log BEGIN $1
 342     pr -n -t $1 >> $logfile
 343     log END $1
 344 }
 345
 346 echolog(){
 347     log "$@"
 348     echo "$@"
 349 }
 350
 351 warn(){
 352     log "WARNING: $*"
 353     WARNINGS="${WARNINGS}WARNING: $*\n"
 354 }
 355
 356 die(){
 357     echolog "$@"
 358     cat <<EOF
 359
 360 If you think configure made a mistake, make sure you are using the latest
 361 version from Git.  If the latest version fails, report the problem to the
 362 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 363 EOF
 364     if disabled logging; then
 365         cat <<EOF
 366 Rerun configure with logging enabled (do not use --disable-logging), and
 367 include the log this produces with your report.
 368 EOF
 369     else
 370         cat <<EOF
 371 Include the log file "$logfile" produced by configure as this will help
 372 solving the problem.
 373 EOF
 374     fi
 375     exit 1
 376 }
 377
 378 # Avoid locale weirdness, besides we really just want to translate ASCII.
 379 toupper(){
 380     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 381 }
 382
 383 tolower(){
 384     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 385 }
 386
 387 c_escape(){
 388     echo "$*" | sed 's/["\\]/\\\0/g'
 389 }
 390
 391 sh_quote(){
 392     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 393     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 394     echo "$v"
 395 }
 396
 397 cleanws(){
 398     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 399 }
 400
 401 filter(){
 402     pat=$1
 403     shift
 404     for v; do
 405         eval "case $v in $pat) echo $v ;; esac"
 406     done
 407 }
 408
 409 filter_out(){
 410     pat=$1
 411     shift
 412     for v; do
 413         eval "case $v in $pat) ;; *) echo $v ;; esac"
 414     done
 415 }
 416
 417 map(){
 418     m=$1
 419     shift
 420     for v; do eval $m; done
 421 }
 422
 423 add_suffix(){
 424     suffix=$1
 425     shift
 426     for v; do echo ${v}${suffix}; done
 427 }
 428
 429 set_all(){
 430     value=$1
 431     shift
 432     for var in $*; do
 433         eval $var=$value
 434     done
 435 }
 436
 437 set_weak(){
 438     value=$1
 439     shift
 440     for var; do
 441         eval : \${$var:=$value}
 442     done
 443 }
 444
 445 sanitize_var_name(){
 446     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 447 }
 448
 449 set_safe(){
 450     var=$1
 451     shift
 452     eval $(sanitize_var_name "$var")='$*'
 453 }
 454
 455 get_safe(){
 456     eval echo \$$(sanitize_var_name "$1")
 457 }
 458
 459 pushvar(){
 460     for pvar in $*; do
 461         eval level=\${${pvar}_level:=0}
 462         eval ${pvar}_${level}="\$$pvar"
 463         eval ${pvar}_level=$(($level+1))
 464     done
 465 }
 466
 467 popvar(){
 468     for pvar in $*; do
 469         eval level=\${${pvar}_level:-0}
 470         test $level = 0 && continue
 471         eval level=$(($level-1))
 472         eval $pvar="\${${pvar}_${level}}"
 473         eval ${pvar}_level=$level
 474         eval unset ${pvar}_${level}
 475     done
 476 }
 477
 478 enable(){
 479     set_all yes $*
 480 }
 481
 482 disable(){
 483     set_all no $*
 484 }
 485
 486 enable_weak(){
 487     set_weak yes $*
 488 }
 489
 490 disable_weak(){
 491     set_weak no $*
 492 }
 493
 494 enable_safe(){
 495     for var; do
 496         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 497     done
 498 }
 499
 500 disable_safe(){
 501     for var; do
 502         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 503     done
 504 }
 505
 506 do_enable_deep(){
 507     for var; do
 508         enabled $var && continue
 509         eval sel="\$${var}_select"
 510         eval sgs="\$${var}_suggest"
 511         pushvar var sgs
 512         enable_deep $sel
 513         popvar sgs
 514         enable_deep_weak $sgs
 515         popvar var
 516     done
 517 }
 518
 519 enable_deep(){
 520     do_enable_deep $*
 521     enable $*
 522 }
 523
 524 enable_deep_weak(){
 525     for var; do
 526         disabled $var && continue
 527         pushvar var
 528         do_enable_deep $var
 529         popvar var
 530         enable_weak $var
 531     done
 532 }
 533
 534 enabled(){
 535     test "${1#!}" = "$1" && op== || op=!=
 536     eval test "x\$${1#!}" $op "xyes"
 537 }
 538
 539 disabled(){
 540     test "${1#!}" = "$1" && op== || op=!=
 541     eval test "x\$${1#!}" $op "xno"
 542 }
 543
 544 enabled_all(){
 545     for opt; do
 546         enabled $opt || return 1
 547     done
 548 }
 549
 550 disabled_all(){
 551     for opt; do
 552         disabled $opt || return 1
 553     done
 554 }
 555
 556 enabled_any(){
 557     for opt; do
 558         enabled $opt && return 0
 559     done
 560 }
 561
 562 disabled_any(){
 563     for opt; do
 564         disabled $opt && return 0
 565     done
 566     return 1
 567 }
 568
 569 set_default(){
 570     for opt; do
 571         eval : \${$opt:=\$${opt}_default}
 572     done
 573 }
 574
 575 is_in(){
 576     value=$1
 577     shift
 578     for var in $*; do
 579         [ $var = $value ] && return 0
 580     done
 581     return 1
 582 }
 583
 584 do_check_deps(){
 585     for cfg; do
 586         cfg="${cfg#!}"
 587         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 588         disabled ${cfg}_checking && continue
 589         enable ${cfg}_checking
 590         append allopts $cfg
 591
 592         eval dep_all="\$${cfg}_deps"
 593         eval dep_any="\$${cfg}_deps_any"
 594         eval dep_sel="\$${cfg}_select"
 595         eval dep_sgs="\$${cfg}_suggest"
 596         eval dep_ifa="\$${cfg}_if"
 597         eval dep_ifn="\$${cfg}_if_any"
 598
 599         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 600         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 601         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 602
 603         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 604         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 605         enabled_all  $dep_all || disable $cfg
 606         enabled_any  $dep_any || disable $cfg
 607         disabled_any $dep_sel && disable $cfg
 608
 609         if enabled $cfg; then
 610             enable_deep $dep_sel
 611             enable_deep_weak $dep_sgs
 612         fi
 613
 614         disable ${cfg}_checking
 615     done
 616 }
 617
 618 check_deps(){
 619     unset allopts
 620
 621     do_check_deps "$@"
 622
 623     for cfg in $allopts; do
 624         enabled $cfg || continue
 625         eval dep_extralibs="\$${cfg}_extralibs"
 626         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 627     done
 628 }
 629
 630 print_config(){
 631     pfx=$1
 632     files=$2
 633     shift 2
 634     map 'eval echo "$v \${$v:-no}"' "$@" |
 635     awk "BEGIN { split(\"$files\", files) }
 636         {
 637             c = \"$pfx\" toupper(\$1);
 638             v = \$2;
 639             sub(/yes/, 1, v);
 640             sub(/no/,  0, v);
 641             for (f in files) {
 642                 file = files[f];
 643                 if (file ~ /\\.h\$/) {
 644                     printf(\"#define %s %d\\n\", c, v) >>file;
 645                 } else if (file ~ /\\.asm\$/) {
 646                     printf(\"%%define %s %d\\n\", c, v) >>file;
 647                 } else if (file ~ /\\.mak\$/) {
 648                     n = -v ? \"\" : \"!\";
 649                     printf(\"%s%s=yes\\n\", n, c) >>file;
 650                 }
 651             }
 652         }"
 653 }
 654
 655 print_enabled(){
 656     suf=$1
 657     shift
 658     for v; do
 659         enabled $v && printf "%s\n" ${v%$suf};
 660     done
 661 }
 662
 663 append(){
 664     var=$1
 665     shift
 666     eval "$var=\"\$$var $*\""
 667 }
 668
 669 prepend(){
 670     var=$1
 671     shift
 672     eval "$var=\"$* \$$var\""
 673 }
 674
 675 unique(){
 676     var=$1
 677     uniq_list=""
 678     for tok in $(eval echo \$$var); do
 679         uniq_list="$(filter_out $tok $uniq_list) $tok"
 680     done
 681     eval "$var=\"${uniq_list}\""
 682 }
 683
 684 add_cppflags(){
 685     append CPPFLAGS "$@"
 686 }
 687
 688 add_cflags(){
 689     append CFLAGS $($cflags_filter "$@")
 690 }
 691
 692 add_asflags(){
 693     append ASFLAGS $($asflags_filter "$@")
 694 }
 695
 696 add_ldflags(){
 697     append LDFLAGS $($ldflags_filter "$@")
 698 }
 699
 700 add_ldexeflags(){
 701     append LDEXEFLAGS $($ldflags_filter "$@")
 702 }
 703
 704 add_stripflags(){
 705     append STRIPFLAGS "$@"
 706 }
 707
 708 add_extralibs(){
 709     prepend extralibs $($ldflags_filter "$@")
 710 }
 711
 712 add_host_cppflags(){
 713     append host_cppflags "$@"
 714 }
 715
 716 add_host_cflags(){
 717     append host_cflags $($host_cflags_filter "$@")
 718 }
 719
 720 add_host_ldflags(){
 721     append host_ldflags $($host_ldflags_filter "$@")
 722 }
 723
 724 add_compat(){
 725     append compat_objs $1
 726     shift
 727     map 'add_cppflags -D$v' "$@"
 728 }
 729
 730 check_cmd(){
 731     log "$@"
 732     "$@" >> $logfile 2>&1
 733 }
 734
 735 cc_o(){
 736     eval printf '%s\\n' $CC_O
 737 }
 738
 739 cc_e(){
 740     eval printf '%s\\n' $CC_E
 741 }
 742
 743 check_cc(){
 744     log check_cc "$@"
 745     cat > $TMPC
 746     log_file $TMPC
 747     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 748 }
 749
 750 check_cpp(){
 751     log check_cpp "$@"
 752     cat > $TMPC
 753     log_file $TMPC
 754     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 755 }
 756
 757 as_o(){
 758     eval printf '%s\\n' $AS_O
 759 }
 760
 761 check_as(){
 762     log check_as "$@"
 763     cat > $TMPS
 764     log_file $TMPS
 765     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 766 }
 767
 768 check_inline_asm(){
 769     log check_inline_asm "$@"
 770     name="$1"
 771     code="$2"
 772     shift 2
 773     disable $name
 774     check_cc "$@" <<EOF && enable $name
 775 void foo(void){ __asm__ volatile($code); }
 776 EOF
 777 }
 778
 779 check_insn(){
 780     log check_insn "$@"
 781     check_inline_asm ${1}_inline "\"$2\""
 782     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 783 }
 784
 785 check_yasm(){
 786     log check_yasm "$@"
 787     echo "$1" > $TMPS
 788     log_file $TMPS
 789     shift 1
 790     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 791 }
 792
 793 ld_o(){
 794     eval printf '%s\\n' $LD_O
 795 }
 796
 797 check_ld(){
 798     log check_ld "$@"
 799     flags=$(filter_out '-l*' "$@")
 800     libs=$(filter '-l*' "$@")
 801     check_cc $($cflags_filter $flags) || return
 802     flags=$($ldflags_filter $flags)
 803     libs=$($ldflags_filter $libs)
 804     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 805 }
 806
 807 print_include(){
 808     hdr=$1
 809     test "${hdr%.h}" = "${hdr}" &&
 810         echo "#include $hdr"    ||
 811         echo "#include <$hdr>"
 812 }
 813
 814 check_code(){
 815     log check_code "$@"
 816     check=$1
 817     headers=$2
 818     code=$3
 819     shift 3
 820     {
 821         for hdr in $headers; do
 822             print_include $hdr
 823         done
 824         echo "int main(void) { $code; return 0; }"
 825     } | check_$check "$@"
 826 }
 827
 828 check_cppflags(){
 829     log check_cppflags "$@"
 830     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 831 int x;
 832 EOF
 833 }
 834
 835 test_cflags(){
 836     log test_cflags "$@"
 837     set -- $($cflags_filter "$@")
 838     check_cc "$@" <<EOF
 839 int x;
 840 EOF
 841 }
 842
 843 check_cflags(){
 844     log check_cflags "$@"
 845     test_cflags "$@" && add_cflags "$@"
 846 }
 847
 848 test_ldflags(){
 849     log test_ldflags "$@"
 850     check_ld "$@" <<EOF
 851 int main(void){ return 0; }
 852 EOF
 853 }
 854
 855 check_ldflags(){
 856     log check_ldflags "$@"
 857     test_ldflags "$@" && add_ldflags "$@"
 858 }
 859
 860 test_stripflags(){
 861     log test_stripflags "$@"
 862     # call check_cc to get a fresh TMPO
 863     check_cc <<EOF
 864 int main(void) { return 0; }
 865 EOF
 866     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 867 }
 868
 869 check_stripflags(){
 870     log check_stripflags "$@"
 871     test_stripflags "$@" && add_stripflags "$@"
 872 }
 873
 874 check_header(){
 875     log check_header "$@"
 876     header=$1
 877     shift
 878     disable_safe $header
 879     check_cpp "$@" <<EOF && enable_safe $header
 880 #include <$header>
 881 int x;
 882 EOF
 883 }
 884
 885 check_func(){
 886     log check_func "$@"
 887     func=$1
 888     shift
 889     disable $func
 890     check_ld "$@" <<EOF && enable $func
 891 extern int $func();
 892 int main(void){ $func(); }
 893 EOF
 894 }
 895
 896 check_mathfunc(){
 897     log check_mathfunc "$@"
 898     func=$1
 899     narg=$2
 900     shift 2
 901     test $narg = 2 && args="f, g" || args="f"
 902     disable $func
 903     check_ld "$@" <<EOF && enable $func
 904 #include <math.h>
 905 float foo(float f, float g) { return $func($args); }
 906 int main(void){ return 0; }
 907 EOF
 908 }
 909
 910 check_func_headers(){
 911     log check_func_headers "$@"
 912     headers=$1
 913     funcs=$2
 914     shift 2
 915     {
 916         for hdr in $headers; do
 917             print_include $hdr
 918         done
 919         for func in $funcs; do
 920             echo "long check_$func(void) { return (long) $func; }"
 921         done
 922         echo "int main(void) { return 0; }"
 923     } | check_ld "$@" && enable $funcs && enable_safe $headers
 924 }
 925
 926 check_cpp_condition(){
 927     log check_cpp_condition "$@"
 928     header=$1
 929     condition=$2
 930     shift 2
 931     check_cpp "$@" <<EOF
 932 #include <$header>
 933 #if !($condition)
 934 #error "unsatisfied condition: $condition"
 935 #endif
 936 EOF
 937 }
 938
 939 check_lib(){
 940     log check_lib "$@"
 941     header="$1"
 942     func="$2"
 943     shift 2
 944     check_header $header && check_func $func "$@" && add_extralibs "$@"
 945 }
 946
 947 check_lib2(){
 948     log check_lib2 "$@"
 949     headers="$1"
 950     funcs="$2"
 951     shift 2
 952     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 953 }
 954
 955 check_pkg_config(){
 956     log check_pkg_config "$@"
 957     pkg="$1"
 958     headers="$2"
 959     funcs="$3"
 960     shift 3
 961     check_cmd $pkg_config --exists --print-errors $pkg || return
 962     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
 963     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
 964     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 965         set_safe "${pkg}_cflags" $pkg_cflags   &&
 966         set_safe "${pkg}_libs"   $pkg_libs
 967 }
 968
 969 check_exec(){
 970     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 971 }
 972
 973 check_exec_crash(){
 974     code=$(cat)
 975
 976     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 977     # are safe but may not be available everywhere.  Thus we use
 978     # raise(SIGTERM) instead.  The check is run in a subshell so we
 979     # can redirect the "Terminated" message from the shell.  SIGBUS
 980     # is not defined by standard C so it is used conditionally.
 981
 982     (check_exec "$@") >> $logfile 2>&1 <<EOF
 983 #include <signal.h>
 984 static void sighandler(int sig){
 985     raise(SIGTERM);
 986 }
 987 int foo(void){
 988     $code
 989 }
 990 int (*func_ptr)(void) = foo;
 991 int main(void){
 992     signal(SIGILL, sighandler);
 993     signal(SIGFPE, sighandler);
 994     signal(SIGSEGV, sighandler);
 995 #ifdef SIGBUS
 996     signal(SIGBUS, sighandler);
 997 #endif
 998     return func_ptr();
 999 }
1000 EOF
1001 }
1002
1003 check_type(){
1004     log check_type "$@"
1005     headers=$1
1006     type=$2
1007     shift 2
1008     disable_safe "$type"
1009     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1010 }
1011
1012 check_struct(){
1013     log check_struct "$@"
1014     headers=$1
1015     struct=$2
1016     member=$3
1017     shift 3
1018     disable_safe "${struct}_${member}"
1019     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1020         enable_safe "${struct}_${member}"
1021 }
1022
1023 check_builtin(){
1024     log check_builtin "$@"
1025     name=$1
1026     headers=$2
1027     builtin=$3
1028     shift 3
1029     disable "$name"
1030     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1031 }
1032
1033 check_compile_assert(){
1034     log check_compile_assert "$@"
1035     name=$1
1036     headers=$2
1037     condition=$3
1038     shift 3
1039     disable "$name"
1040     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1041 }
1042
1043 require(){
1044     name="$1"
1045     header="$2"
1046     func="$3"
1047     shift 3
1048     check_lib $header $func "$@" || die "ERROR: $name not found"
1049 }
1050
1051 require2(){
1052     name="$1"
1053     headers="$2"
1054     func="$3"
1055     shift 3
1056     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1057 }
1058
1059 require_pkg_config(){
1060     pkg="$1"
1061     check_pkg_config "$@" || die "ERROR: $pkg not found"
1062     add_cflags    $(get_safe "${pkg}_cflags")
1063     add_extralibs $(get_safe "${pkg}_libs")
1064 }
1065
1066 hostcc_e(){
1067     eval printf '%s\\n' $HOSTCC_E
1068 }
1069
1070 hostcc_o(){
1071     eval printf '%s\\n' $HOSTCC_O
1072 }
1073
1074 check_host_cc(){
1075     log check_host_cc "$@"
1076     cat > $TMPC
1077     log_file $TMPC
1078     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1079 }
1080
1081 check_host_cpp(){
1082     log check_host_cpp "$@"
1083     cat > $TMPC
1084     log_file $TMPC
1085     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1086 }
1087
1088 check_host_cppflags(){
1089     log check_host_cppflags "$@"
1090     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1091 int x;
1092 EOF
1093 }
1094
1095 check_host_cflags(){
1096     log check_host_cflags "$@"
1097     set -- $($host_cflags_filter "$@")
1098     check_host_cc "$@" <<EOF && append host_cflags "$@"
1099 int x;
1100 EOF
1101 }
1102
1103 check_host_cpp_condition(){
1104     log check_host_cpp_condition "$@"
1105     header=$1
1106     condition=$2
1107     shift 2
1108     check_host_cpp "$@" <<EOF
1109 #include <$header>
1110 #if !($condition)
1111 #error "unsatisfied condition: $condition"
1112 #endif
1113 EOF
1114 }
1115
1116 apply(){
1117     file=$1
1118     shift
1119     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1120 }
1121
1122 cp_if_changed(){
1123     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1124     mkdir -p "$(dirname $2)"
1125     $cp_f "$1" "$2"
1126 }
1127
1128 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1129 # system-dependent things.
1130
1131 COMPONENT_LIST="
1132     bsfs
1133     decoders
1134     demuxers
1135     encoders
1136     filters
1137     hwaccels
1138     indevs
1139     muxers
1140     outdevs
1141     parsers
1142     protocols
1143 "
1144
1145 EXAMPLE_LIST="
1146     avcodec_example
1147     filter_audio_example
1148     metadata_example
1149     output_example
1150     qsvdec_example
1151     transcode_aac_example
1152 "
1153
1154 EXTERNAL_LIBRARY_LIST="
1155     avisynth
1156     bzlib
1157     frei0r
1158     gnutls
1159     libbs2b
1160     libcdio
1161     libdc1394
1162     libdcadec
1163     libfaac
1164     libfdk_aac
1165     libfontconfig
1166     libfreetype
1167     libgsm
1168     libilbc
1169     libmfx
1170     libmp3lame
1171     libopencore_amrnb
1172     libopencore_amrwb
1173     libopencv
1174     libopenh264
1175     libopenjpeg
1176     libopus
1177     libpulse
1178     librtmp
1179     libschroedinger
1180     libsnappy
1181     libspeex
1182     libtheora
1183     libtwolame
1184     libvo_aacenc
1185     libvo_amrwbenc
1186     libvorbis
1187     libvpx
1188     libwavpack
1189     libwebp
1190     libx264
1191     libx265
1192     libxavs
1193     libxcb
1194     libxcb_shm
1195     libxcb_xfixes
1196     libxvid
1197     mmal
1198     nvenc
1199     openssl
1200     x11grab
1201     zlib
1202 "
1203
1204 FEATURE_LIST="
1205     gray
1206     hardcoded_tables
1207     runtime_cpudetect
1208     safe_bitstream_reader
1209     shared
1210     small
1211     sram
1212     static
1213     swscale_alpha
1214 "
1215
1216 HWACCEL_LIST="
1217     d3d11va
1218     dxva2
1219     vaapi
1220     vda
1221     vdpau
1222 "
1223
1224 LIBRARY_LIST="
1225     avcodec
1226     avdevice
1227     avfilter
1228     avformat
1229     avresample
1230     avutil
1231     swscale
1232 "
1233
1234 LICENSE_LIST="
1235     gpl
1236     nonfree
1237     version3
1238 "
1239
1240 PROGRAM_LIST="
1241     avconv
1242     avplay
1243     avprobe
1244 "
1245
1246 SUBSYSTEM_LIST="
1247     dct
1248     doc
1249     error_resilience
1250     faan
1251     fft
1252     lsp
1253     lzo
1254     mdct
1255     network
1256     rdft
1257 "
1258
1259 CONFIG_LIST="
1260     $COMPONENT_LIST
1261     $EXAMPLE_LIST
1262     $EXTERNAL_LIBRARY_LIST
1263     $FEATURE_LIST
1264     $HWACCEL_LIST
1265     $LICENSE_LIST
1266     $LIBRARY_LIST
1267     $PROGRAM_LIST
1268     $SUBSYSTEM_LIST
1269     memalign_hack
1270     neon_clobber_test
1271     pic
1272     pod2man
1273     texi2html
1274     thumb
1275     valgrind_backtrace
1276     xmm_clobber_test
1277 "
1278
1279 THREADS_LIST="
1280     pthreads
1281     w32threads
1282 "
1283
1284 ATOMICS_LIST="
1285     atomics_gcc
1286     atomics_suncc
1287     atomics_win32
1288 "
1289
1290 ARCH_LIST="
1291     aarch64
1292     alpha
1293     arm
1294     avr32
1295     avr32_ap
1296     avr32_uc
1297     bfin
1298     ia64
1299     m68k
1300     mips
1301     mips64
1302     parisc
1303     ppc
1304     ppc64
1305     s390
1306     sh4
1307     sparc
1308     sparc64
1309     tilegx
1310     tilepro
1311     tomi
1312     x86
1313     x86_32
1314     x86_64
1315 "
1316
1317 ARCH_EXT_LIST_ARM="
1318     armv5te
1319     armv6
1320     armv6t2
1321     armv8
1322     neon
1323     vfp
1324     vfpv3
1325 "
1326
1327 ARCH_EXT_LIST_X86_SIMD="
1328     amd3dnow
1329     amd3dnowext
1330     avx
1331     avx2
1332     fma3
1333     fma4
1334     mmx
1335     mmxext
1336     sse
1337     sse2
1338     sse3
1339     sse4
1340     sse42
1341     ssse3
1342     xop
1343 "
1344
1345 ARCH_EXT_LIST_PPC="
1346     altivec
1347     dcbzl
1348     ldbrx
1349     power8
1350     ppc4xx
1351     vsx
1352 "
1353
1354 ARCH_EXT_LIST_X86="
1355     $ARCH_EXT_LIST_X86_SIMD
1356     cpunop
1357     i686
1358 "
1359
1360 ARCH_EXT_LIST="
1361     $ARCH_EXT_LIST_ARM
1362     $ARCH_EXT_LIST_PPC
1363     $ARCH_EXT_LIST_X86
1364     loongson
1365     vis
1366 "
1367
1368 ARCH_FEATURES="
1369     aligned_stack
1370     fast_64bit
1371     fast_clz
1372     fast_cmov
1373     local_aligned_8
1374     local_aligned_16
1375     simd_align_16
1376 "
1377
1378 BUILTIN_LIST="
1379     atomic_cas_ptr
1380     machine_rw_barrier
1381     MemoryBarrier
1382     mm_empty
1383     rdtsc
1384     sync_val_compare_and_swap
1385 "
1386 HAVE_LIST_CMDLINE="
1387     inline_asm
1388     symver
1389     yasm
1390 "
1391
1392 HAVE_LIST_PUB="
1393     bigendian
1394     fast_unaligned
1395 "
1396
1397 HEADERS_LIST="
1398     alsa_asoundlib_h
1399     altivec_h
1400     arpa_inet_h
1401     cdio_paranoia_h
1402     cdio_paranoia_paranoia_h
1403     dev_bktr_ioctl_bt848_h
1404     dev_bktr_ioctl_meteor_h
1405     dev_ic_bt8xx_h
1406     dev_video_bktr_ioctl_bt848_h
1407     dev_video_meteor_ioctl_meteor_h
1408     direct_h
1409     dlfcn_h
1410     d3d11_h
1411     dxva_h
1412     gsm_h
1413     io_h
1414     mach_mach_time_h
1415     machine_ioctl_bt848_h
1416     machine_ioctl_meteor_h
1417     malloc_h
1418     poll_h
1419     sndio_h
1420     soundcard_h
1421     sys_mman_h
1422     sys_param_h
1423     sys_resource_h
1424     sys_select_h
1425     sys_soundcard_h
1426     sys_time_h
1427     sys_un_h
1428     sys_videoio_h
1429     unistd_h
1430     valgrind_valgrind_h
1431     windows_h
1432     winsock2_h
1433 "
1434
1435 INTRINSICS_LIST="
1436     intrinsics_neon
1437 "
1438
1439 MATH_FUNCS="
1440     atanf
1441     atan2f
1442     cbrtf
1443     cosf
1444     exp2
1445     exp2f
1446     expf
1447     isinf
1448     isnan
1449     ldexpf
1450     llrint
1451     llrintf
1452     log2
1453     log2f
1454     log10f
1455     lrint
1456     lrintf
1457     powf
1458     rint
1459     round
1460     roundf
1461     sinf
1462     trunc
1463     truncf
1464 "
1465
1466 SYSTEM_FUNCS="
1467     aligned_malloc
1468     clock_gettime
1469     closesocket
1470     CommandLineToArgvW
1471     CoTaskMemFree
1472     CryptGenRandom
1473     dlopen
1474     fcntl
1475     flt_lim
1476     fork
1477     getaddrinfo
1478     gethrtime
1479     getopt
1480     GetProcessAffinityMask
1481     GetProcessMemoryInfo
1482     GetProcessTimes
1483     getrusage
1484     getservbyport
1485     GetSystemTimeAsFileTime
1486     gettimeofday
1487     gmtime_r
1488     inet_aton
1489     isatty
1490     jack_port_get_latency_range
1491     LoadLibrary
1492     localtime_r
1493     mach_absolute_time
1494     MapViewOfFile
1495     memalign
1496     mkstemp
1497     mmap
1498     mprotect
1499     nanosleep
1500     posix_memalign
1501     sched_getaffinity
1502     SetConsoleTextAttribute
1503     setmode
1504     setrlimit
1505     Sleep
1506     strerror_r
1507     sysconf
1508     sysctl
1509     usleep
1510     VirtualAlloc
1511 "
1512
1513 TOOLCHAIN_FEATURES="
1514     as_dn_directive
1515     as_func
1516     as_object_arch
1517     asm_mod_q
1518     attribute_may_alias
1519     attribute_packed
1520     ebp_available
1521     ebx_available
1522     gnu_as
1523     ibm_asm
1524     inline_asm_labels
1525     pragma_deprecated
1526     symver_asm_label
1527     symver_gnu_asm
1528     vfp_args
1529     xform_asm
1530     xmm_clobbers
1531 "
1532
1533 TYPES_LIST="
1534     CONDITION_VARIABLE_Ptr
1535     socklen_t
1536     struct_addrinfo
1537     struct_group_source_req
1538     struct_ip_mreq_source
1539     struct_ipv6_mreq
1540     struct_pollfd
1541     struct_rusage_ru_maxrss
1542     struct_sockaddr_in6
1543     struct_sockaddr_sa_len
1544     struct_sockaddr_storage
1545     struct_v4l2_frmivalenum_discrete
1546 "
1547
1548 HAVE_LIST="
1549     $ARCH_EXT_LIST
1550     $(add_suffix _external $ARCH_EXT_LIST)
1551     $(add_suffix _inline   $ARCH_EXT_LIST)
1552     $ARCH_FEATURES
1553     $ATOMICS_LIST
1554     $BUILTIN_LIST
1555     $HAVE_LIST_CMDLINE
1556     $HAVE_LIST_PUB
1557     $HEADERS_LIST
1558     $INTRINSICS_LIST
1559     $MATH_FUNCS
1560     $SYSTEM_FUNCS
1561     $THREADS_LIST
1562     $TOOLCHAIN_FEATURES
1563     $TYPES_LIST
1564     atomics_native
1565     dos_paths
1566     dxva2_lib
1567     libc_msvcrt
1568     libdc1394_1
1569     libdc1394_2
1570     sdl
1571     section_data_rel_ro
1572     threads
1573     vaapi_x11
1574     vdpau_x11
1575     xlib
1576 "
1577
1578 # options emitted with CONFIG_ prefix but not available on the command line
1579 CONFIG_EXTRA="
1580     aandcttables
1581     ac3dsp
1582     audio_frame_queue
1583     audiodsp
1584     blockdsp
1585     bswapdsp
1586     cabac
1587     dvprofile
1588     faandct
1589     faanidct
1590     fdctdsp
1591     flacdsp
1592     fmtconvert
1593     g722dsp
1594     gcrypt
1595     gmp
1596     golomb
1597     gplv3
1598     h263dsp
1599     h264chroma
1600     h264dsp
1601     h264pred
1602     h264qpel
1603     hpeldsp
1604     huffman
1605     huffyuvdsp
1606     huffyuvencdsp
1607     idctdsp
1608     iirfilter
1609     imdct15
1610     intrax8
1611     ividsp
1612     jpegtables
1613     libx262
1614     lgplv3
1615     lpc
1616     me_cmp
1617     mpeg_er
1618     mpegaudio
1619     mpegaudiodsp
1620     mpegvideo
1621     mpegvideoenc
1622     mss34dsp
1623     pixblockdsp
1624     qpeldsp
1625     qsv
1626     qsvdec
1627     qsvenc
1628     rangecoder
1629     riffdec
1630     riffenc
1631     rtpdec
1632     rtpenc_chain
1633     rv34dsp
1634     sinewin
1635     snappy
1636     startcode
1637     texturedsp
1638     texturedspenc
1639     tpeldsp
1640     videodsp
1641     vp3dsp
1642     vp56dsp
1643     vp8dsp
1644     wma_freqs
1645     wmv2dsp
1646 "
1647
1648 CMDLINE_SELECT="
1649     $ARCH_EXT_LIST
1650     $CONFIG_LIST
1651     $HAVE_LIST_CMDLINE
1652     $THREADS_LIST
1653     asm
1654     cross_compile
1655     debug
1656     extra_warnings
1657     logging
1658     lto
1659     optimizations
1660     rpath
1661 "
1662
1663 PATHS_LIST="
1664     bindir
1665     datadir
1666     docdir
1667     incdir
1668     libdir
1669     mandir
1670     prefix
1671     shlibdir
1672 "
1673
1674 CMDLINE_SET="
1675     $PATHS_LIST
1676     ar
1677     arch
1678     as
1679     build_suffix
1680     cc
1681     cpu
1682     cross_prefix
1683     dep_cc
1684     env
1685     extra_version
1686     host_cc
1687     host_cflags
1688     host_ld
1689     host_ldflags
1690     host_libs
1691     host_os
1692     ld
1693     logfile
1694     malloc_prefix
1695     nm
1696     optflags
1697     pkg_config
1698     pkg_config_flags
1699     random_seed
1700     samples
1701     sysinclude
1702     sysroot
1703     target_exec
1704     target_os
1705     target_path
1706     target_samples
1707     toolchain
1708 "
1709
1710 CMDLINE_APPEND="
1711     extra_cflags
1712     host_cppflags
1713 "
1714
1715 # code dependency declarations
1716
1717 # architecture extensions
1718
1719 armv5te_deps="arm"
1720 armv6_deps="arm"
1721 armv6t2_deps="arm"
1722 armv8_deps="aarch64"
1723 neon_deps_any="aarch64 arm"
1724 intrinsics_neon_deps="neon"
1725 vfp_deps_any="aarch64 arm"
1726 vfpv3_deps="vfp"
1727
1728 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1729
1730 altivec_deps="ppc"
1731 ppc4xx_deps="ppc"
1732 vsx_deps="altivec"
1733 power8_deps="vsx"
1734
1735 cpunop_deps="i686"
1736 x86_64_select="i686"
1737 x86_64_suggest="fast_cmov"
1738
1739 amd3dnow_deps="mmx"
1740 amd3dnowext_deps="amd3dnow"
1741 i686_deps="x86"
1742 mmx_deps="x86"
1743 mmxext_deps="mmx"
1744 sse_deps="mmxext"
1745 sse2_deps="sse"
1746 sse3_deps="sse2"
1747 ssse3_deps="sse3"
1748 sse4_deps="ssse3"
1749 sse42_deps="sse4"
1750 avx_deps="sse42"
1751 xop_deps="avx"
1752 fma3_deps="avx"
1753 fma4_deps="avx"
1754 avx2_deps="avx"
1755
1756 mmx_external_deps="yasm"
1757 mmx_inline_deps="inline_asm"
1758 mmx_suggest="mmx_external mmx_inline"
1759
1760 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1761     eval dep=\$${ext}_deps
1762     eval ${ext}_external_deps='"${dep}_external"'
1763     eval ${ext}_inline_deps='"${dep}_inline"'
1764     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1765 done
1766
1767 aligned_stack_if_any="aarch64 ppc x86"
1768 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1769 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1770 fast_unaligned_if_any="aarch64 ppc x86"
1771 simd_align_16_if_any="altivec neon sse"
1772
1773 # system capabilities
1774 symver_if_any="symver_asm_label symver_gnu_asm"
1775 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1776
1777 # threading support
1778 atomics_gcc_if="sync_val_compare_and_swap"
1779 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1780 atomics_win32_if="MemoryBarrier"
1781 atomics_native_if_any="$ATOMICS_LIST"
1782 w32threads_deps="atomics_native"
1783 threads_if_any="$THREADS_LIST"
1784
1785 # subsystems
1786 dct_select="rdft"
1787 error_resilience_select="me_cmp"
1788 faandct_deps="faan fdctdsp"
1789 faanidct_deps="faan idctdsp"
1790 intrax8_select="error_resilience"
1791 mdct_select="fft"
1792 rdft_select="fft"
1793 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1794 mpeg_er_select="error_resilience"
1795 mpegaudio_select="mpegaudiodsp"
1796 mpegaudiodsp_select="dct"
1797 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1798 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1799 nvenc_deps_any="dlopen LoadLibrary"
1800 nvenc_extralibs='$ldl'
1801 qsvdec_select="qsv"
1802 qsvenc_select="qsv"
1803
1804 # decoders / encoders
1805 aac_decoder_select="imdct15 mdct sinewin"
1806 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1807 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1808 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1809 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1810 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1811 adpcm_g722_decoder_select="g722dsp"
1812 adpcm_g722_encoder_select="g722dsp"
1813 aic_decoder_select="golomb idctdsp"
1814 alac_encoder_select="lpc"
1815 als_decoder_select="bswapdsp"
1816 amrnb_decoder_select="lsp"
1817 amrwb_decoder_select="lsp"
1818 amv_decoder_select="sp5x_decoder"
1819 ape_decoder_select="bswapdsp"
1820 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1821 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1822 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1823 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1824 atrac1_decoder_select="mdct sinewin"
1825 atrac3_decoder_select="mdct"
1826 atrac3p_decoder_select="mdct sinewin"
1827 bink_decoder_select="blockdsp hpeldsp"
1828 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1829 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1830 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1831 cllc_decoder_select="bswapdsp"
1832 comfortnoise_encoder_select="lpc"
1833 cook_decoder_select="audiodsp mdct sinewin"
1834 cscd_decoder_select="lzo"
1835 cscd_decoder_suggest="zlib"
1836 dca_decoder_select="fmtconvert mdct"
1837 dds_decoder_select="texturedsp"
1838 dnxhd_decoder_select="blockdsp idctdsp"
1839 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1840 dvvideo_decoder_select="dvprofile idctdsp"
1841 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1842 dxa_decoder_deps="zlib"
1843 eac3_decoder_select="ac3_decoder"
1844 eac3_encoder_select="ac3_encoder"
1845 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1846 eatgq_decoder_select="aandcttables idctdsp"
1847 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1848 exr_decoder_deps="zlib"
1849 ffv1_decoder_select="golomb rangecoder"
1850 ffv1_encoder_select="rangecoder"
1851 ffvhuff_decoder_select="huffyuv_decoder"
1852 ffvhuff_encoder_select="huffyuv_encoder"
1853 fic_decoder_select="golomb"
1854 flac_decoder_select="flacdsp golomb"
1855 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1856 flashsv_decoder_deps="zlib"
1857 flashsv_encoder_deps="zlib"
1858 flashsv2_decoder_deps="zlib"
1859 flv_decoder_select="h263_decoder"
1860 flv_encoder_select="h263_encoder"
1861 fourxm_decoder_select="blockdsp bswapdsp"
1862 fraps_decoder_select="bswapdsp huffman"
1863 g2m_decoder_deps="zlib"
1864 g2m_decoder_select="blockdsp idctdsp jpegtables"
1865 h261_decoder_select="mpeg_er mpegvideo"
1866 h261_encoder_select="aandcttables mpegvideoenc"
1867 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1868 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1869 h263i_decoder_select="h263_decoder"
1870 h263p_encoder_select="h263_encoder"
1871 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1872 h264_decoder_suggest="error_resilience"
1873 h264_nvenc_encoder_deps="nvenc"
1874 h264_qsv_decoder_deps="libmfx"
1875 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1876 h264_qsv_encoder_deps="libmfx"
1877 h264_qsv_encoder_select="qsvenc"
1878 hap_decoder_select="snappy texturedsp"
1879 hap_encoder_deps="libsnappy"
1880 hap_encoder_select="texturedspenc"
1881 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1882 hevc_nvenc_encoder_deps="nvenc"
1883 hevc_qsv_encoder_deps="libmfx"
1884 hevc_qsv_encoder_select="qsvenc"
1885 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1886 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1887 iac_decoder_select="imc_decoder"
1888 imc_decoder_select="bswapdsp fft mdct sinewin"
1889 indeo3_decoder_select="hpeldsp"
1890 indeo4_decoder_select="ividsp"
1891 indeo5_decoder_select="ividsp"
1892 interplay_video_decoder_select="hpeldsp"
1893 jpegls_decoder_select="golomb mjpeg_decoder"
1894 jpegls_encoder_select="golomb"
1895 jv_decoder_select="blockdsp"
1896 lagarith_decoder_select="huffyuvdsp"
1897 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1898 loco_decoder_select="golomb"
1899 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1900 metasound_decoder_select="lsp mdct sinewin"
1901 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1902 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1903 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1904 mjpegb_decoder_select="mjpeg_decoder"
1905 mlp_decoder_select="mlp_parser"
1906 motionpixels_decoder_select="bswapdsp"
1907 mp1_decoder_select="mpegaudio"
1908 mp1float_decoder_select="mpegaudio"
1909 mp2_decoder_select="mpegaudio"
1910 mp2float_decoder_select="mpegaudio"
1911 mp3_decoder_select="mpegaudio"
1912 mp3adu_decoder_select="mpegaudio"
1913 mp3adufloat_decoder_select="mpegaudio"
1914 mp3float_decoder_select="mpegaudio"
1915 mp3on4_decoder_select="mpegaudio"
1916 mp3on4float_decoder_select="mpegaudio"
1917 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1918 mpc8_decoder_select="mpegaudiodsp"
1919 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1920 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1921 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1922 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1923 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1924 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1925 mpeg2_qsv_encoder_deps="libmfx"
1926 mpeg2_qsv_encoder_select="qsvenc"
1927 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1928 mpeg4_encoder_select="h263_encoder"
1929 msa1_decoder_select="mss34dsp"
1930 msmpeg4v1_decoder_select="h263_decoder"
1931 msmpeg4v2_decoder_select="h263_decoder"
1932 msmpeg4v2_encoder_select="h263_encoder"
1933 msmpeg4v3_decoder_select="h263_decoder"
1934 msmpeg4v3_encoder_select="h263_encoder"
1935 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1936 mts2_decoder_select="mss34dsp"
1937 mxpeg_decoder_select="mjpeg_decoder"
1938 nellymoser_decoder_select="mdct sinewin"
1939 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1940 nuv_decoder_select="idctdsp lzo"
1941 on2avc_decoder_select="mdct"
1942 opus_decoder_deps="avresample"
1943 opus_decoder_select="imdct15"
1944 png_decoder_deps="zlib"
1945 png_encoder_deps="zlib"
1946 png_encoder_select="huffyuvencdsp"
1947 prores_decoder_select="idctdsp"
1948 prores_encoder_select="fdctdsp"
1949 qcelp_decoder_select="lsp"
1950 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1951 ra_144_encoder_select="audio_frame_queue lpc"
1952 ralf_decoder_select="golomb"
1953 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1954 rv10_encoder_select="h263_encoder"
1955 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1956 rv20_encoder_select="h263_encoder"
1957 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
1958 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
1959 shorten_decoder_select="golomb"
1960 sipr_decoder_select="lsp"
1961 sp5x_decoder_select="mjpeg_decoder"
1962 svq1_decoder_select="hpeldsp"
1963 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1964 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1965 svq3_decoder_suggest="zlib"
1966 tak_decoder_select="audiodsp"
1967 tdsc_decoder_deps="zlib"
1968 tdsc_decoder_select="mjpeg_decoder"
1969 theora_decoder_select="vp3_decoder"
1970 thp_decoder_select="mjpeg_decoder"
1971 tiff_decoder_suggest="zlib"
1972 tiff_encoder_suggest="zlib"
1973 truehd_decoder_select="mlp_decoder"
1974 truemotion2_decoder_select="bswapdsp"
1975 truespeech_decoder_select="bswapdsp"
1976 tscc_decoder_deps="zlib"
1977 txd_decoder_select="texturedsp"
1978 twinvq_decoder_select="mdct lsp sinewin"
1979 utvideo_decoder_select="bswapdsp"
1980 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1981 vble_decoder_select="huffyuvdsp"
1982 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1983 vc1image_decoder_select="vc1_decoder"
1984 vorbis_decoder_select="mdct"
1985 vorbis_encoder_select="mdct"
1986 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1987 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
1988 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
1989 vp6a_decoder_select="vp6_decoder"
1990 vp6f_decoder_select="vp6_decoder"
1991 vp7_decoder_select="h264pred videodsp vp8dsp"
1992 vp8_decoder_select="h264pred videodsp vp8dsp"
1993 vp9_decoder_select="videodsp"
1994 webp_decoder_select="vp8_decoder"
1995 wmapro_decoder_select="mdct sinewin wma_freqs"
1996 wmav1_decoder_select="mdct sinewin wma_freqs"
1997 wmav1_encoder_select="mdct sinewin wma_freqs"
1998 wmav2_decoder_select="mdct sinewin wma_freqs"
1999 wmav2_encoder_select="mdct sinewin wma_freqs"
2000 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2001 wmv1_decoder_select="h263_decoder"
2002 wmv1_encoder_select="h263_encoder"
2003 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2004 wmv2_encoder_select="h263_encoder wmv2dsp"
2005 wmv3_decoder_select="vc1_decoder"
2006 wmv3image_decoder_select="wmv3_decoder"
2007 zerocodec_decoder_deps="zlib"
2008 zlib_decoder_deps="zlib"
2009 zlib_encoder_deps="zlib"
2010 zmbv_decoder_deps="zlib"
2011 zmbv_encoder_deps="zlib"
2012
2013 # hardware accelerators
2014 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2015 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2016 vaapi_deps="va_va_h"
2017 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2018 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2019 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2020
2021 h263_vaapi_hwaccel_deps="vaapi"
2022 h263_vaapi_hwaccel_select="h263_decoder"
2023 h263_vdpau_hwaccel_deps="vdpau"
2024 h263_vdpau_hwaccel_select="h263_decoder"
2025 h264_d3d11va_hwaccel_deps="d3d11va"
2026 h264_d3d11va_hwaccel_select="h264_decoder"
2027 h264_dxva2_hwaccel_deps="dxva2"
2028 h264_dxva2_hwaccel_select="h264_decoder"
2029 h264_mmal_decoder_deps="mmal"
2030 h264_mmal_hwaccel_deps="mmal"
2031 h264_mmal_decoder_select="h264_decoder"
2032 h264_mmal_encoder_deps="mmal"
2033 h264_qsv_hwaccel_deps="libmfx"
2034 h264_vaapi_hwaccel_deps="vaapi"
2035 h264_vaapi_hwaccel_select="h264_decoder"
2036 h264_vda_hwaccel_deps="vda"
2037 h264_vda_hwaccel_select="h264_decoder"
2038 h264_vda_old_hwaccel_deps="vda"
2039 h264_vda_old_hwaccel_select="h264_decoder"
2040 h264_vdpau_hwaccel_deps="vdpau"
2041 h264_vdpau_hwaccel_select="h264_decoder"
2042 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2043 hevc_d3d11va_hwaccel_select="hevc_decoder"
2044 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2045 hevc_dxva2_hwaccel_select="hevc_decoder"
2046 mpeg1_vdpau_hwaccel_deps="vdpau"
2047 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2048 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2049 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2050 mpeg2_dxva2_hwaccel_deps="dxva2"
2051 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2052 mpeg2_vaapi_hwaccel_deps="vaapi"
2053 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2054 mpeg2_vdpau_hwaccel_deps="vdpau"
2055 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2056 mpeg4_vaapi_hwaccel_deps="vaapi"
2057 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2058 mpeg4_vdpau_hwaccel_deps="vdpau"
2059 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2060 vc1_d3d11va_hwaccel_deps="d3d11va"
2061 vc1_d3d11va_hwaccel_select="vc1_decoder"
2062 vc1_dxva2_hwaccel_deps="dxva2"
2063 vc1_dxva2_hwaccel_select="vc1_decoder"
2064 vc1_vaapi_hwaccel_deps="vaapi"
2065 vc1_vaapi_hwaccel_select="vc1_decoder"
2066 vc1_vdpau_hwaccel_deps="vdpau"
2067 vc1_vdpau_hwaccel_select="vc1_decoder"
2068 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2069 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2070 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2071 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2072
2073 # parsers
2074 h264_parser_select="h264_decoder"
2075 hevc_parser_select="golomb"
2076 mpegvideo_parser_select="mpegvideo"
2077 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2078 vc1_parser_select="mpegvideo startcode vc1_decoder"
2079
2080 # bitstream_filters
2081 mjpeg2jpeg_bsf_select="jpegtables"
2082
2083 # external libraries
2084 libdcadec_decoder_deps="libdcadec"
2085 libfaac_encoder_deps="libfaac"
2086 libfaac_encoder_select="audio_frame_queue"
2087 libfdk_aac_decoder_deps="libfdk_aac"
2088 libfdk_aac_encoder_deps="libfdk_aac"
2089 libfdk_aac_encoder_select="audio_frame_queue"
2090 libgsm_decoder_deps="libgsm"
2091 libgsm_encoder_deps="libgsm"
2092 libgsm_ms_decoder_deps="libgsm"
2093 libgsm_ms_encoder_deps="libgsm"
2094 libilbc_decoder_deps="libilbc"
2095 libilbc_encoder_deps="libilbc"
2096 libmp3lame_encoder_deps="libmp3lame"
2097 libmp3lame_encoder_select="audio_frame_queue"
2098 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2099 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2100 libopencore_amrnb_encoder_select="audio_frame_queue"
2101 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2102 libopenh264_encoder_deps="libopenh264"
2103 libopenjpeg_decoder_deps="libopenjpeg"
2104 libopenjpeg_encoder_deps="libopenjpeg"
2105 libopus_decoder_deps="libopus"
2106 libopus_encoder_deps="libopus"
2107 libopus_encoder_select="audio_frame_queue"
2108 libschroedinger_decoder_deps="libschroedinger"
2109 libschroedinger_encoder_deps="libschroedinger"
2110 libspeex_decoder_deps="libspeex"
2111 libspeex_encoder_deps="libspeex"
2112 libspeex_encoder_select="audio_frame_queue"
2113 libtheora_encoder_deps="libtheora"
2114 libtwolame_encoder_deps="libtwolame"
2115 libvo_aacenc_encoder_deps="libvo_aacenc"
2116 libvo_aacenc_encoder_select="audio_frame_queue"
2117 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2118 libvorbis_encoder_deps="libvorbis"
2119 libvorbis_encoder_select="audio_frame_queue"
2120 libvpx_vp8_decoder_deps="libvpx"
2121 libvpx_vp8_encoder_deps="libvpx"
2122 libvpx_vp9_decoder_deps="libvpx"
2123 libvpx_vp9_encoder_deps="libvpx"
2124 libwavpack_encoder_deps="libwavpack"
2125 libwebp_encoder_deps="libwebp"
2126 libx262_encoder_deps="libx262"
2127 libx264_encoder_deps="libx264"
2128 libx265_encoder_deps="libx265"
2129 libxavs_encoder_deps="libxavs"
2130 libxvid_encoder_deps="libxvid"
2131
2132 # demuxers / muxers
2133 ac3_demuxer_select="ac3_parser"
2134 asf_demuxer_select="riffdec"
2135 asf_muxer_select="riffenc"
2136 asf_stream_muxer_select="asf_muxer"
2137 avi_demuxer_select="riffdec"
2138 avi_muxer_select="riffenc"
2139 avisynth_demuxer_deps="avisynth"
2140 avisynth_demuxer_select="riffdec"
2141 caf_demuxer_select="riffdec"
2142 dash_muxer_select="mp4_muxer"
2143 dirac_demuxer_select="dirac_parser"
2144 dv_demuxer_select="dvprofile"
2145 dv_muxer_select="dvprofile"
2146 dxa_demuxer_select="riffdec"
2147 eac3_demuxer_select="ac3_parser"
2148 f4v_muxer_select="mov_muxer"
2149 flac_demuxer_select="flac_parser"
2150 hds_muxer_select="flv_muxer"
2151 hls_muxer_select="mpegts_muxer"
2152 ipod_muxer_select="mov_muxer"
2153 ismv_muxer_select="mov_muxer"
2154 matroska_audio_muxer_select="matroska_muxer"
2155 matroska_demuxer_select="riffdec"
2156 matroska_demuxer_suggest="bzlib lzo zlib"
2157 matroska_muxer_select="riffenc"
2158 mmf_muxer_select="riffenc"
2159 mov_demuxer_select="riffdec"
2160 mov_demuxer_suggest="zlib"
2161 mov_muxer_select="riffenc rtpenc_chain"
2162 mp3_demuxer_select="mpegaudio_parser"
2163 mp4_muxer_select="mov_muxer"
2164 mpegts_muxer_select="adts_muxer latm_muxer"
2165 mpegtsraw_demuxer_select="mpegts_demuxer"
2166 mxf_d10_muxer_select="mxf_muxer"
2167 nut_muxer_select="riffenc"
2168 nuv_demuxer_select="riffdec"
2169 oga_muxer_select="ogg_muxer"
2170 ogg_demuxer_select="golomb"
2171 opus_muxer_select="ogg_muxer"
2172 psp_muxer_select="mov_muxer"
2173 rtp_demuxer_select="sdp_demuxer"
2174 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2175 rtsp_demuxer_select="http_protocol rtpdec"
2176 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2177 sap_demuxer_select="sdp_demuxer"
2178 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2179 sdp_demuxer_select="rtpdec"
2180 smoothstreaming_muxer_select="ismv_muxer"
2181 spdif_muxer_select="aac_parser"
2182 spx_muxer_select="ogg_muxer"
2183 tak_demuxer_select="tak_parser"
2184 tg2_muxer_select="mov_muxer"
2185 tgp_muxer_select="mov_muxer"
2186 w64_demuxer_select="wav_demuxer"
2187 wav_demuxer_select="riffdec"
2188 wav_muxer_select="riffenc"
2189 webm_muxer_select="riffenc"
2190 wtv_demuxer_select="riffdec"
2191 xmv_demuxer_select="riffdec"
2192 xwma_demuxer_select="riffdec"
2193
2194 # indevs / outdevs
2195 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2196 alsa_outdev_deps="alsa_asoundlib_h"
2197 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2198 dv1394_indev_deps="dv1394"
2199 dv1394_indev_select="dv_demuxer"
2200 fbdev_indev_deps="linux_fb_h"
2201 jack_indev_deps="jack_jack_h pthreads"
2202 libcdio_indev_deps="libcdio"
2203 libdc1394_indev_deps="libdc1394"
2204 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2205 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2206 pulse_indev_deps="libpulse"
2207 sndio_indev_deps="sndio_h"
2208 sndio_outdev_deps="sndio_h"
2209 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2210 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2211 vfwcap_indev_extralibs="-lavicap32"
2212 x11grab_indev_deps="x11grab"
2213 x11grab_xcb_indev_deps="libxcb"
2214
2215 # protocols
2216 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2217 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2218 ffrtmpcrypt_protocol_select="tcp_protocol"
2219 ffrtmphttp_protocol_deps="!librtmp_protocol"
2220 ffrtmphttp_protocol_select="http_protocol"
2221 gopher_protocol_select="network"
2222 http_protocol_select="tcp_protocol"
2223 httpproxy_protocol_select="tcp_protocol"
2224 https_protocol_select="tls_protocol"
2225 icecast_protocol_select="http_protocol"
2226 librtmp_protocol_deps="librtmp"
2227 librtmpe_protocol_deps="librtmp"
2228 librtmps_protocol_deps="librtmp"
2229 librtmpt_protocol_deps="librtmp"
2230 librtmpte_protocol_deps="librtmp"
2231 mmsh_protocol_select="http_protocol"
2232 mmst_protocol_select="network"
2233 rtmp_protocol_deps="!librtmp_protocol"
2234 rtmp_protocol_select="tcp_protocol"
2235 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2236 rtmps_protocol_deps="!librtmp_protocol"
2237 rtmps_protocol_select="tls_protocol"
2238 rtmpt_protocol_select="ffrtmphttp_protocol"
2239 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2240 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2241 rtp_protocol_select="udp_protocol"
2242 sctp_protocol_deps="struct_sctp_event_subscribe"
2243 sctp_protocol_select="network"
2244 srtp_protocol_select="rtp_protocol"
2245 tcp_protocol_select="network"
2246 tls_gnutls_protocol_deps="gnutls"
2247 tls_gnutls_protocol_select="tcp_protocol"
2248 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2249 tls_openssl_protocol_select="tcp_protocol"
2250 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2251 udp_protocol_select="network"
2252 unix_protocol_deps="sys_un_h"
2253 unix_protocol_select="network"
2254
2255 # filters
2256 blackframe_filter_deps="gpl"
2257 boxblur_filter_deps="gpl"
2258 bs2b_filter_deps="libbs2b"
2259 cropdetect_filter_deps="gpl"
2260 delogo_filter_deps="gpl"
2261 drawtext_filter_deps="libfreetype"
2262 frei0r_filter_deps="frei0r dlopen"
2263 frei0r_filter_extralibs='$ldl'
2264 frei0r_src_filter_deps="frei0r dlopen"
2265 frei0r_src_filter_extralibs='$ldl'
2266 hqdn3d_filter_deps="gpl"
2267 interlace_filter_deps="gpl"
2268 ocv_filter_deps="libopencv"
2269 resample_filter_deps="avresample"
2270 scale_filter_deps="swscale"
2271
2272 # examples
2273 avcodec_example_deps="avcodec avutil"
2274 filter_audio_example_deps="avfilter avutil"
2275 metadata_example_deps="avformat avutil"
2276 output_example_deps="avcodec avformat avutil swscale"
2277 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2278 transcode_aac_example_deps="avcodec avformat avresample"
2279
2280 # libraries, in linking order
2281 avcodec_deps="avutil"
2282 avdevice_deps="avformat avcodec avutil"
2283 avfilter_deps="avutil"
2284 avformat_deps="avcodec avutil"
2285 avresample_deps="avutil"
2286 swscale_deps="avutil"
2287
2288 # programs
2289 avconv_deps="avcodec avfilter avformat avresample swscale"
2290 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2291                fps_filter null_filter resample_filter scale_filter
2292                setpts_filter trim_filter"
2293 avplay_deps="avcodec avformat avresample swscale sdl"
2294 avplay_libs='$sdl_libs'
2295 avplay_select="rdft transpose_filter hflip_filter vflip_filter"
2296 avprobe_deps="avcodec avformat"
2297
2298 # documentation
2299 pod2man_deps="doc"
2300 texi2html_deps="doc"
2301
2302 # default parameters
2303
2304 logfile="config.log"
2305
2306 # installation paths
2307 prefix_default="/usr/local"
2308 bindir_default='${prefix}/bin'
2309 datadir_default='${prefix}/share/avconv'
2310 docdir_default='${prefix}/share/doc/libav'
2311 incdir_default='${prefix}/include'
2312 libdir_default='${prefix}/lib'
2313 mandir_default='${prefix}/share/man'
2314 shlibdir_default="$libdir_default"
2315
2316 # toolchain
2317 ar_default="ar"
2318 cc_default="gcc"
2319 host_cc_default="gcc"
2320 cp_f="cp -f"
2321 ln_s="ln -s -f"
2322 nm_default="nm -g"
2323 objformat="elf"
2324 pkg_config_default=pkg-config
2325 ranlib="ranlib"
2326 strip="strip"
2327 yasmexe="yasm"
2328
2329 # machine
2330 arch_default=$(uname -m)
2331 cpu="generic"
2332 intrinsics="none"
2333
2334 # OS
2335 target_os_default=$(tolower $(uname -s))
2336 host_os=$target_os_default
2337
2338 # configurable options
2339 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2340
2341 enable asm
2342 enable debug
2343 enable doc
2344 enable faan faandct faanidct
2345 enable optimizations
2346 enable safe_bitstream_reader
2347 enable static
2348 enable swscale_alpha
2349 enable valgrind_backtrace
2350
2351 # By default, enable only those hwaccels that have no external dependencies.
2352 enable d3d11va dxva2 vda vdpau
2353
2354 # build settings
2355 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2356 LIBPREF="lib"
2357 LIBSUF=".a"
2358 FULLNAME='$(NAME)$(BUILDSUF)'
2359 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2360 SLIBPREF="lib"
2361 SLIBSUF=".so"
2362 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2363 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2364 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2365 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2366 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2367 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2368
2369 asflags_filter=echo
2370 cflags_filter=echo
2371 ldflags_filter=echo
2372
2373 AS_C='-c'
2374 AS_O='-o $@'
2375 CC_C='-c'
2376 CC_E='-E -o $@'
2377 CC_O='-o $@'
2378 LD_O='-o $@'
2379 LD_LIB='-l%'
2380 LD_PATH='-L'
2381 HOSTCC_C='-c'
2382 HOSTCC_E='-E -o $@'
2383 HOSTCC_O='-o $@'
2384 HOSTLD_O='-o $@'
2385
2386 host_libs='-lm'
2387 host_cflags_filter=echo
2388 host_ldflags_filter=echo
2389
2390 target_path='$(CURDIR)'
2391
2392 # since the object filename is not given with the -MM flag, the compiler
2393 # is only able to print the basename, and we must add the path ourselves
2394 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2395 DEPFLAGS='-MM'
2396
2397 # find source path
2398 if test -f configure; then
2399     source_path=.
2400 else
2401     source_path=$(cd $(dirname "$0"); pwd)
2402     echo "$source_path" | grep -q '[[:blank:]]' &&
2403         die "Out of tree builds are impossible with whitespace in source path."
2404     test -e "$source_path/config.h" &&
2405         die "Out of tree builds are impossible with config.h in source dir."
2406 fi
2407
2408 for v in "$@"; do
2409     r=${v#*=}
2410     l=${v%"$r"}
2411     r=$(sh_quote "$r")
2412     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2413 done
2414
2415 find_things(){
2416     thing=$1
2417     pattern=$2
2418     file=$source_path/$3
2419     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2420 }
2421
2422 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2423 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2424 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2425 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2426 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2427 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2428 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2429 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2430 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2431 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2432 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2433
2434 ALL_COMPONENTS="
2435     $BSF_LIST
2436     $DECODER_LIST
2437     $DEMUXER_LIST
2438     $ENCODER_LIST
2439     $FILTER_LIST
2440     $HWACCEL_LIST
2441     $INDEV_LIST
2442     $MUXER_LIST
2443     $OUTDEV_LIST
2444     $PARSER_LIST
2445     $PROTOCOL_LIST
2446 "
2447
2448 for n in $COMPONENT_LIST; do
2449     v=$(toupper ${n%s})_LIST
2450     eval enable \$$v
2451     eval ${n}_if_any="\$$v"
2452 done
2453
2454 enable $ARCH_EXT_LIST
2455
2456 die_unknown(){
2457     echo "Unknown option \"$1\"."
2458     echo "See $0 --help for available options."
2459     exit 1
2460 }
2461
2462 print_3_columns() {
2463     cat | tr ' ' '\n' | sort | pr -r -3 -t
2464 }
2465
2466 show_list() {
2467     suffix=_$1
2468     shift
2469     echo $* | sed s/$suffix//g | print_3_columns
2470     exit 0
2471 }
2472
2473 rand_list(){
2474     IFS=', '
2475     set -- $*
2476     unset IFS
2477     for thing; do
2478         comp=${thing%:*}
2479         prob=${thing#$comp}
2480         prob=${prob#:}
2481         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2482         echo "prob ${prob:-0.5}"
2483         printf '%s\n' $comp
2484     done
2485 }
2486
2487 do_random(){
2488     action=$1
2489     shift
2490     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2491     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2492 }
2493
2494 for opt do
2495     optval="${opt#*=}"
2496     case "$opt" in
2497         --extra-ldflags=*)
2498             add_ldflags $optval
2499         ;;
2500         --extra-ldexeflags=*)
2501             add_ldexeflags $optval
2502         ;;
2503         --extra-libs=*)
2504             add_extralibs $optval
2505         ;;
2506         --disable-devices)
2507             disable $INDEV_LIST $OUTDEV_LIST
2508         ;;
2509         --enable-debug=*)
2510             debuglevel="$optval"
2511         ;;
2512         --disable-programs)
2513             disable $PROGRAM_LIST
2514         ;;
2515         --disable-everything)
2516             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2517         ;;
2518         --disable-all)
2519             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2520             disable $LIBRARY_LIST $PROGRAM_LIST doc
2521         ;;
2522         --enable-random|--disable-random)
2523             action=${opt%%-random}
2524             do_random ${action#--} $COMPONENT_LIST
2525         ;;
2526         --enable-random=*|--disable-random=*)
2527             action=${opt%%-random=*}
2528             do_random ${action#--} $optval
2529         ;;
2530         --enable-*=*|--disable-*=*)
2531             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2532             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2533             eval list=\$$(toupper $thing)_LIST
2534             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2535             $action $(filter "$name" $list)
2536         ;;
2537         --enable-avserver|--disable-avserver*)
2538             warn "avserver has been removed, the ${opt} option is only"\
2539                  "provided for compatibility and will be removed in the future"
2540         ;;
2541         --enable-?*|--disable-?*)
2542             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2543             if is_in $option $COMPONENT_LIST; then
2544                 test $action = disable && action=unset
2545                 eval $action \$$(toupper ${option%s})_LIST
2546             elif is_in $option $CMDLINE_SELECT; then
2547                 $action $option
2548             else
2549                 die_unknown $opt
2550             fi
2551         ;;
2552         --list-*)
2553             NAME="${opt#--list-}"
2554             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2555             NAME=${NAME%s}
2556             eval show_list $NAME \$$(toupper $NAME)_LIST
2557         ;;
2558         --help|-h) show_help
2559         ;;
2560         *)
2561             optname="${opt%%=*}"
2562             optname="${optname#--}"
2563             optname=$(echo "$optname" | sed 's/-/_/g')
2564             if is_in $optname $CMDLINE_SET; then
2565                 eval $optname='$optval'
2566             elif is_in $optname $CMDLINE_APPEND; then
2567                 append $optname "$optval"
2568             else
2569                 die_unknown $opt
2570             fi
2571         ;;
2572     esac
2573 done
2574
2575 for e in $env; do
2576     eval "export $e"
2577 done
2578
2579 disabled logging && logfile=/dev/null
2580
2581 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2582 set >> $logfile
2583
2584 case "$toolchain" in
2585     clang-asan)
2586         cc_default="clang"
2587         add_cflags  -fsanitize=address
2588         add_ldflags -fsanitize=address
2589     ;;
2590     clang-tsan)
2591         cc_default="clang"
2592         add_cflags  -fsanitize=thread -pie
2593         add_ldflags -fsanitize=thread -pie
2594     ;;
2595     clang-usan)
2596         cc_default="clang"
2597         add_cflags  -fsanitize=undefined -O1
2598         add_ldflags -fsanitize=undefined
2599     ;;
2600     gcc-asan)
2601         cc_default="gcc"
2602         add_cflags  -fsanitize=address
2603         add_ldflags -fsanitize=address
2604     ;;
2605     gcc-tsan)
2606         cc_default="gcc"
2607         add_cflags  -fsanitize=thread -pie -fPIC
2608         add_ldflags -fsanitize=thread -pie -fPIC
2609     ;;
2610     gcc-usan)
2611         cc_default="gcc"
2612         add_cflags  -fsanitize=undefined
2613         add_ldflags -fsanitize=undefined
2614     ;;
2615     valgrind-massif)
2616         target_exec_default="valgrind"
2617         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2618     ;;
2619     valgrind-memcheck)
2620         target_exec_default="valgrind"
2621         target_exec_args="--track-origins=yes --leak-check=full"
2622     ;;
2623     msvc)
2624         # Check whether the current MSVC version needs the C99 converter.
2625         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2626         # support enough of C99 to build libav. Default to the new
2627         # behaviour if the regexp was unable to match anything, since this
2628         # successfully parses the version number of existing supported
2629         # versions that require the converter (MSVC 2010 and 2012).
2630         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2631         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2632             cc_default="cl"
2633         else
2634             cc_default="c99wrap cl"
2635         fi
2636         ld_default="link"
2637         nm_default="dumpbin -symbols"
2638         ar_default="lib"
2639         target_os_default="win32"
2640         # Use a relative path for TMPDIR. This makes sure all the
2641         # ffconf temp files are written with a relative path, avoiding
2642         # issues with msys/win32 path conversion for MSVC parameters
2643         # such as -Fo<file> or -out:<file>.
2644         TMPDIR=.
2645     ;;
2646     icl)
2647         cc_default="icl"
2648         ld_default="xilink"
2649         nm_default="dumpbin -symbols"
2650         ar_default="xilib"
2651         target_os_default="win32"
2652         TMPDIR=.
2653     ;;
2654     gcov)
2655         add_cflags  -fprofile-arcs -ftest-coverage
2656         add_ldflags -fprofile-arcs -ftest-coverage
2657     ;;
2658     hardened)
2659         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2660         add_cflags   -fno-strict-overflow -fstack-protector-all
2661         add_ldflags  -Wl,-z,relro -Wl,-z,now
2662     ;;
2663     ?*)
2664         die "Unknown toolchain $toolchain"
2665     ;;
2666 esac
2667
2668 test -n "$cross_prefix" && enable cross_compile
2669
2670 if enabled cross_compile; then
2671     test -n "$arch" && test -n "$target_os" ||
2672         die "Must specify target arch and OS when cross-compiling"
2673 fi
2674
2675 ar_default="${cross_prefix}${ar_default}"
2676 cc_default="${cross_prefix}${cc_default}"
2677 nm_default="${cross_prefix}${nm_default}"
2678 pkg_config_default="${cross_prefix}${pkg_config_default}"
2679 ranlib="${cross_prefix}${ranlib}"
2680 strip="${cross_prefix}${strip}"
2681
2682 sysinclude_default="${sysroot}/usr/include"
2683
2684 set_default arch cc pkg_config sysinclude target_exec target_os
2685 enabled cross_compile || host_cc_default=$cc
2686 set_default host_cc
2687
2688 if ! $pkg_config --version >/dev/null 2>&1; then
2689     warn "$pkg_config not found, library detection may fail."
2690     pkg_config=false
2691 fi
2692
2693 exesuf() {
2694     case $1 in
2695         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2696     esac
2697 }
2698
2699 EXESUF=$(exesuf $target_os)
2700 HOSTEXESUF=$(exesuf $host_os)
2701
2702 # set temporary file name
2703 : ${TMPDIR:=$TEMPDIR}
2704 : ${TMPDIR:=$TMP}
2705 : ${TMPDIR:=/tmp}
2706
2707 if ! check_cmd mktemp -u XXXXXX; then
2708     # simple replacement for missing mktemp
2709     # NOT SAFE FOR GENERAL USE
2710     mktemp(){
2711         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2712     }
2713 fi
2714
2715 tmpfile(){
2716     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2717         (set -C; exec > $tmp) 2>/dev/null ||
2718         die "Unable to create temporary file in $TMPDIR."
2719     append TMPFILES $tmp
2720     eval $1=$tmp
2721 }
2722
2723 trap 'rm -f -- $TMPFILES' EXIT
2724
2725 tmpfile TMPASM .asm
2726 tmpfile TMPC   .c
2727 tmpfile TMPE   $EXESUF
2728 tmpfile TMPH   .h
2729 tmpfile TMPO   .o
2730 tmpfile TMPS   .S
2731 tmpfile TMPSH  .sh
2732 tmpfile TMPV   .ver
2733
2734 unset -f mktemp
2735
2736 chmod +x $TMPE
2737
2738 # make sure we can execute files in $TMPDIR
2739 cat > $TMPSH 2>> $logfile <<EOF
2740 #! /bin/sh
2741 EOF
2742 chmod +x $TMPSH >> $logfile 2>&1
2743 if ! $TMPSH >> $logfile 2>&1; then
2744     cat <<EOF
2745 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2746 variable to another directory and make sure that it is not mounted noexec.
2747 EOF
2748     die "Sanity test failed."
2749 fi
2750
2751 armasm_flags(){
2752     for flag; do
2753         case $flag in
2754             # Filter out MSVC cl.exe options from cflags that shouldn't
2755             # be passed to gas-preprocessor
2756             -M[TD]*)                                            ;;
2757             *)                  echo $flag                      ;;
2758         esac
2759    done
2760 }
2761
2762 ccc_flags(){
2763     for flag; do
2764         case $flag in
2765             -std=c99)           echo -c99                       ;;
2766             -mcpu=*)            echo -arch ${flag#*=}           ;;
2767             -mieee)             echo -ieee                      ;;
2768             -O*|-fast)          echo $flag                      ;;
2769             -fno-math-errno)    echo -assume nomath_errno       ;;
2770             -g)                 echo -g3                        ;;
2771             -Wall)              echo -msg_enable level2         ;;
2772             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2773             -Wl,*)              echo $flag                      ;;
2774             -f*|-W*)                                            ;;
2775             *)                  echo $flag                      ;;
2776         esac
2777    done
2778 }
2779
2780 cparser_flags(){
2781     for flag; do
2782         case $flag in
2783             -Wno-switch)             echo -Wno-switch-enum ;;
2784             -Wno-format-zero-length) ;;
2785             -Wdisabled-optimization) ;;
2786             -Wno-pointer-sign)       echo -Wno-other ;;
2787             *)                       echo $flag ;;
2788         esac
2789     done
2790 }
2791
2792 msvc_common_flags(){
2793     for flag; do
2794         case $flag in
2795             # In addition to specifying certain flags under the compiler
2796             # specific filters, they must be specified here as well or else the
2797             # generic catch all at the bottom will print the original flag.
2798             -Wall)                ;;
2799             -std=c99)             ;;
2800             # Common flags
2801             -fomit-frame-pointer) ;;
2802             -g)                   echo -Z7 ;;
2803             -fno-math-errno)      ;;
2804             -fno-common)          ;;
2805             -fno-signed-zeros)    ;;
2806             -fPIC)                ;;
2807             -mthumb)              ;;
2808             -march=*)             ;;
2809             -lz)                  echo zlib.lib ;;
2810             -lavifil32)           echo vfw32.lib ;;
2811             -lavicap32)           echo vfw32.lib user32.lib ;;
2812             -l*)                  echo ${flag#-l}.lib ;;
2813             -L*)                  echo -libpath:${flag#-L} ;;
2814             *)                    echo $flag ;;
2815         esac
2816     done
2817 }
2818
2819 msvc_flags(){
2820     msvc_common_flags "$@"
2821     for flag; do
2822         case $flag in
2823             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2824                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2825                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2826                                        -wd4273 -wd4554 -wd4701 ;;
2827         esac
2828     done
2829 }
2830
2831 icl_flags(){
2832     msvc_common_flags "$@"
2833     for flag; do
2834         case $flag in
2835             # Despite what Intel's documentation says -Wall, which is supported
2836             # on Windows, does enable remarks so disable them here.
2837             -Wall)                echo $flag -Qdiag-disable:remark ;;
2838             -std=c99)             echo -Qstd=c99 ;;
2839         esac
2840     done
2841 }
2842
2843 pgi_flags(){
2844     for flag; do
2845         case $flag in
2846             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2847             -fomit-frame-pointer) echo -Mnoframe ;;
2848             -g)                   echo -gopt ;;
2849             *)                    echo $flag ;;
2850         esac
2851     done
2852 }
2853
2854 suncc_flags(){
2855     for flag; do
2856         case $flag in
2857             -march=*|-mcpu=*)
2858                 case "${flag#*=}" in
2859                     native)                   echo -xtarget=native       ;;
2860                     v9|niagara)               echo -xarch=sparc          ;;
2861                     ultrasparc)               echo -xarch=sparcvis       ;;
2862                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2863                     i586|pentium)             echo -xchip=pentium        ;;
2864                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2865                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2866                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2867                     pentium4*)          echo -xtarget=pentium4           ;;
2868                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2869                     *-sse3)             echo -xarch=sse3                 ;;
2870                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2871                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2872                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2873                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2874                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2875                     k8|opteron|athlon64|athlon-fx)
2876                                                echo -xarch=sse2a         ;;
2877                     athlon*)                   echo -xarch=pentium_proa  ;;
2878                 esac
2879                 ;;
2880             -std=c99)             echo -xc99              ;;
2881             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2882             -fPIC)                echo -KPIC -xcode=pic32 ;;
2883             -W*,*)                echo $flag              ;;
2884             -f*-*|-W*|-mimpure-text)                      ;;
2885             -shared)              echo -G                 ;;
2886             *)                    echo $flag              ;;
2887         esac
2888     done
2889 }
2890
2891 tms470_flags(){
2892     for flag; do
2893         case $flag in
2894             -march=*|-mcpu=*)
2895                 case "${flag#*=}" in
2896                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2897                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2898                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2899                     armv6*|arm11*)          echo -mv=6   ;;
2900                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2901                                             echo -mv=5e  ;;
2902                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2903                 esac
2904                 ;;
2905             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2906             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2907             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2908             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2909             -msoft-float)   echo --float_support=vfplib       ;;
2910             -O[0-3]|-mf=*)  echo $flag                        ;;
2911             -g)             echo -g -mn                       ;;
2912             -pds=*)         echo $flag                        ;;
2913             -D*|-I*)        echo $flag                        ;;
2914             --gcc|--abi=*)  echo $flag                        ;;
2915             -me)            echo $flag                        ;;
2916         esac
2917     done
2918 }
2919
2920 probe_cc(){
2921     pfx=$1
2922     _cc=$2
2923
2924     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2925     unset _ld_o _ldflags _ld_lib _ld_path
2926     unset _depflags _DEPCMD _DEPFLAGS
2927     _flags_filter=echo
2928
2929     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2930         _type=llvm_gcc
2931         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2932         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2933         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2934         _cflags_speed='-O3'
2935         _cflags_size='-Os'
2936     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2937         _type=gcc
2938         gcc_version=$($_cc --version | head -n1)
2939         gcc_basever=$($_cc -dumpversion)
2940         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2941         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2942         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2943         if ! $_cc -dumpversion | grep -q '^2\.'; then
2944             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2945         fi
2946         _cflags_speed='-O3'
2947         _cflags_size='-Os'
2948     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2949         _type=icc
2950         _ident=$($_cc --version | head -n1)
2951         _depflags='-MMD'
2952         _cflags_speed='-O3'
2953         _cflags_size='-Os'
2954         _cflags_noopt='-O1'
2955     elif $_cc -v 2>&1 | grep -q xlc; then
2956         _type=xlc
2957         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2958         _cflags_speed='-O5'
2959         _cflags_size='-O5 -qcompact'
2960     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2961         _type=ccc
2962         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2963         _DEPFLAGS='-M'
2964         _cflags_speed='-fast'
2965         _cflags_size='-O1'
2966         _flags_filter=ccc_flags
2967     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2968         test -d "$sysroot" || die "No valid sysroot specified."
2969         _type=armcc
2970         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2971         armcc_conf="$PWD/armcc.conf"
2972         $_cc --arm_linux_configure                 \
2973              --arm_linux_config_file="$armcc_conf" \
2974              --configure_sysroot="$sysroot"        \
2975              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2976              die "Error creating armcc configuration file."
2977         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2978         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2979         as_default="${cross_prefix}gcc"
2980         _depflags='-MMD'
2981         _cflags_speed='-O3'
2982         _cflags_size='-Os'
2983     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2984         _type=tms470
2985         _ident=$($_cc -version | head -n1 | tr -s ' ')
2986         _flags='--gcc --abi=eabi -me'
2987         _cc_e='-ppl -fe=$@'
2988         _cc_o='-fe=$@'
2989         _depflags='-ppa -ppd=$(@:.o=.d)'
2990         _cflags_speed='-O3 -mf=5'
2991         _cflags_size='-O3 -mf=2'
2992         _flags_filter=tms470_flags
2993     elif $_cc -v 2>&1 | grep -q clang; then
2994         _type=clang
2995         _ident=$($_cc --version | head -n1)
2996         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2997         _cflags_speed='-O3'
2998         _cflags_size='-Os'
2999     elif $_cc -V 2>&1 | grep -q Sun; then
3000         _type=suncc
3001         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3002         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3003         _DEPFLAGS='-xM1 -xc99'
3004         _ldflags='-std=c99'
3005         _cflags_speed='-O5'
3006         _cflags_size='-O5 -xspace'
3007         _flags_filter=suncc_flags
3008     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3009         _type=pathscale
3010         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3011         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3012         _cflags_speed='-O2'
3013         _cflags_size='-Os'
3014         _flags_filter='filter_out -Wdisabled-optimization'
3015     elif $_cc -v 2>&1 | grep -q Open64; then
3016         _type=open64
3017         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3018         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3019         _cflags_speed='-O2'
3020         _cflags_size='-Os'
3021         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3022     elif $_cc -V 2>&1 | grep -q Portland; then
3023         _type=pgi
3024         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3025         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3026         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3027         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3028         _cflags_noopt="-O1"
3029         _flags_filter=pgi_flags
3030     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3031         _type=armasm
3032         _ident=$($_cc | head -n1)
3033         # 4509: "This form of conditional instruction is deprecated"
3034         _flags="-nologo -ignore 4509"
3035         _flags_filter=armasm_flags
3036     elif $_cc 2>&1 | grep -q Microsoft; then
3037         _type=msvc
3038         _ident=$($_cc 2>&1 | head -n1)
3039         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3040         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3041         _cflags_speed="-O2"
3042         _cflags_size="-O1"
3043         if $_cc 2>&1 | grep -q Linker; then
3044             _ld_o='-out:$@'
3045         else
3046             _ld_o='-Fe$@'
3047         fi
3048         _cc_o='-Fo$@'
3049         _cc_e='-P -Fi$@'
3050         _flags_filter=msvc_flags
3051         _ld_lib='lib%.a'
3052         _ld_path='-libpath:'
3053         _flags='-nologo'
3054         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3055     elif $_cc 2>&1 | grep -q Intel; then
3056         _type=icl
3057         _ident=$($_cc 2>&1 | head -n1)
3058         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3059         # Not only is O3 broken on 13.x+ but it is slower on all previous
3060         # versions (tested) as well.
3061         _cflags_speed="-O2"
3062         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3063         if $_cc 2>&1 | grep -q Linker; then
3064             _ld_o='-out:$@'
3065         else
3066             _ld_o='-Fe$@'
3067         fi
3068         _cc_o='-Fo$@'
3069         _cc_e='-P'
3070         _flags_filter=icl_flags
3071         _ld_lib='lib%.a'
3072         _ld_path='-libpath:'
3073         # -Qdiag-error to make icl error when seeing certain unknown arguments
3074         _flags='-nologo -Qdiag-error:4044,10157'
3075         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3076         # with MSVC which enables it by default.
3077         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3078     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3079         _type=cparser
3080         _ident=$($_cc --version | head -n1)
3081         _depflags='-MMD'
3082         _cflags_speed='-O4'
3083         _cflags_size='-O2'
3084         _flags_filter=cparser_flags
3085     fi
3086
3087     eval ${pfx}_type=\$_type
3088     eval ${pfx}_ident=\$_ident
3089 }
3090
3091 set_ccvars(){
3092     eval ${1}_C=\${_cc_c-\${${1}_C}}
3093     eval ${1}_E=\${_cc_e-\${${1}_E}}
3094     eval ${1}_O=\${_cc_o-\${${1}_O}}
3095
3096     if [ -n "$_depflags" ]; then
3097         eval ${1}_DEPFLAGS=\$_depflags
3098     else
3099         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3100         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3101         eval DEP${1}FLAGS=\$_flags
3102     fi
3103 }
3104
3105 probe_cc cc "$cc"
3106 cflags_filter=$_flags_filter
3107 cflags_speed=$_cflags_speed
3108 cflags_size=$_cflags_size
3109 cflags_noopt=$_cflags_noopt
3110 add_cflags $_flags $_cflags
3111 cc_ldflags=$_ldflags
3112 set_ccvars CC
3113
3114 probe_cc hostcc "$host_cc"
3115 host_cflags_filter=$_flags_filter
3116 add_host_cflags  $_flags $_cflags
3117 set_ccvars HOSTCC
3118
3119 test -n "$cc_type" && enable $cc_type ||
3120     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3121
3122 : ${as_default:=$cc}
3123 : ${dep_cc_default:=$cc}
3124 : ${ld_default:=$cc}
3125 : ${host_ld_default:=$host_cc}
3126 set_default ar as dep_cc ld host_ld
3127
3128 probe_cc as "$as"
3129 asflags_filter=$_flags_filter
3130 add_asflags $_flags $_cflags
3131 set_ccvars AS
3132
3133 probe_cc ld "$ld"
3134 ldflags_filter=$_flags_filter
3135 add_ldflags $_flags $_ldflags
3136 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3137 LD_O=${_ld_o-$LD_O}
3138 LD_LIB=${_ld_lib-$LD_LIB}
3139 LD_PATH=${_ld_path-$LD_PATH}
3140
3141 probe_cc hostld "$host_ld"
3142 host_ldflags_filter=$_flags_filter
3143 add_host_ldflags $_flags $_ldflags
3144 HOSTLD_O=${_ld_o-$HOSTLD_O}
3145
3146 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3147     probe_cc depcc "$dep_cc"
3148     CCDEP=${_DEPCMD:-$DEPCMD}
3149     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3150     DEPCCFLAGS=$_flags
3151 fi
3152
3153 if $ar 2>&1 | grep -q Microsoft; then
3154     arflags="-nologo"
3155     ar_o='-out:$@'
3156 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3157     arflags="rq"
3158     ar_o='$@'
3159 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3160     arflags='-Xany -r -c'
3161     ar_o='$@'
3162 else
3163     arflags="rc"
3164     ar_o='$@'
3165 fi
3166
3167 add_cflags $extra_cflags
3168 add_asflags $extra_cflags
3169
3170 if test -n "$sysroot"; then
3171     case "$cc_type" in
3172         gcc|llvm_gcc|clang)
3173             add_cppflags --sysroot="$sysroot"
3174             add_ldflags --sysroot="$sysroot"
3175         ;;
3176         tms470)
3177             add_cppflags -I"$sysinclude"
3178             add_ldflags  --sysroot="$sysroot"
3179         ;;
3180     esac
3181 fi
3182
3183 if test "$cpu" = host; then
3184     enabled cross_compile &&
3185         die "--cpu=host makes no sense when cross-compiling."
3186
3187     case "$cc_type" in
3188         gcc|llvm_gcc)
3189             check_native(){
3190                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3191                 sed -n "/cc1.*$1=/{
3192                             s/.*$1=\\([^ ]*\\).*/\\1/
3193                             p
3194                             q
3195                         }" $TMPE
3196             }
3197             cpu=$(check_native -march || check_native -mcpu)
3198         ;;
3199     esac
3200
3201     test "${cpu:-host}" = host &&
3202         die "--cpu=host not supported with compiler $cc"
3203 fi
3204
3205 # Deal with common $arch aliases
3206 case "$arch" in
3207     aarch64|arm64)
3208         arch="aarch64"
3209     ;;
3210     arm*)
3211         arch="arm"
3212     ;;
3213     mips*|IP*)
3214         arch="mips"
3215     ;;
3216     parisc*|hppa*)
3217         arch="parisc"
3218     ;;
3219     "Power Macintosh"|ppc*|powerpc*)
3220         arch="ppc"
3221     ;;
3222     s390|s390x)
3223         arch="s390"
3224     ;;
3225     sh4|sh)
3226         arch="sh4"
3227     ;;
3228     sun4u|sparc*)
3229         arch="sparc"
3230     ;;
3231     tilegx|tile-gx)
3232         arch="tilegx"
3233     ;;
3234     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3235         arch="x86"
3236     ;;
3237 esac
3238
3239 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3240 enable $arch
3241
3242 # Add processor-specific flags
3243 if enabled aarch64; then
3244
3245     case $cpu in
3246         armv*)
3247             cpuflags="-march=$cpu"
3248         ;;
3249         *)
3250             cpuflags="-mcpu=$cpu"
3251         ;;
3252     esac
3253
3254 elif enabled alpha; then
3255
3256     cpuflags="-mcpu=$cpu"
3257
3258 elif enabled arm; then
3259
3260     check_arm_arch() {
3261         check_cpp_condition stddef.h \
3262             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3263             $cpuflags
3264     }
3265
3266     probe_arm_arch() {
3267         if   check_arm_arch 4;        then echo armv4;
3268         elif check_arm_arch 4T;       then echo armv4t;
3269         elif check_arm_arch 5;        then echo armv5;
3270         elif check_arm_arch 5E;       then echo armv5e;
3271         elif check_arm_arch 5T;       then echo armv5t;
3272         elif check_arm_arch 5TE;      then echo armv5te;
3273         elif check_arm_arch 5TEJ;     then echo armv5te;
3274         elif check_arm_arch 6;        then echo armv6;
3275         elif check_arm_arch 6J;       then echo armv6j;
3276         elif check_arm_arch 6K;       then echo armv6k;
3277         elif check_arm_arch 6Z;       then echo armv6z;
3278         elif check_arm_arch 6ZK;      then echo armv6zk;
3279         elif check_arm_arch 6T2;      then echo armv6t2;
3280         elif check_arm_arch 7;        then echo armv7;
3281         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3282         elif check_arm_arch 7S;       then echo armv7-a;
3283         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3284         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3285         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3286         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3287         fi
3288     }
3289
3290     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3291
3292     case $cpu in
3293         armv*)
3294             cpuflags="-march=$cpu"
3295             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3296         ;;
3297         *)
3298             cpuflags="-mcpu=$cpu"
3299             case $cpu in
3300                 cortex-a*)                               subarch=armv7a  ;;
3301                 cortex-r*)                               subarch=armv7r  ;;
3302                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3303                 arm11*)                                  subarch=armv6   ;;
3304                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3305                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3306                 *)                             subarch=$(probe_arm_arch) ;;
3307             esac
3308         ;;
3309     esac
3310
3311     case "$subarch" in
3312         armv5t*)    enable fast_clz                ;;
3313         armv[6-8]*) enable fast_clz fast_unaligned ;;
3314     esac
3315
3316 elif enabled avr32; then
3317
3318     case $cpu in
3319         ap7[02]0[0-2])
3320             subarch="avr32_ap"
3321             cpuflags="-mpart=$cpu"
3322         ;;
3323         ap)
3324             subarch="avr32_ap"
3325             cpuflags="-march=$cpu"
3326         ;;
3327         uc3[ab]*)
3328             subarch="avr32_uc"
3329             cpuflags="-mcpu=$cpu"
3330         ;;
3331         uc)
3332             subarch="avr32_uc"
3333             cpuflags="-march=$cpu"
3334         ;;
3335     esac
3336
3337 elif enabled bfin; then
3338
3339     cpuflags="-mcpu=$cpu"
3340
3341 elif enabled mips; then
3342
3343     cpuflags="-march=$cpu"
3344
3345 elif enabled ppc; then
3346
3347     disable ldbrx
3348
3349     case $(tolower $cpu) in
3350         601|ppc601|powerpc601)
3351             cpuflags="-mcpu=601"
3352             disable altivec
3353         ;;
3354         603*|ppc603*|powerpc603*)
3355             cpuflags="-mcpu=603"
3356             disable altivec
3357         ;;
3358         604*|ppc604*|powerpc604*)
3359             cpuflags="-mcpu=604"
3360             disable altivec
3361         ;;
3362         g3|75*|ppc75*|powerpc75*)
3363             cpuflags="-mcpu=750"
3364             disable altivec
3365         ;;
3366         g4|745*|ppc745*|powerpc745*)
3367             cpuflags="-mcpu=7450"
3368             disable vsx
3369         ;;
3370         74*|ppc74*|powerpc74*)
3371             cpuflags="-mcpu=7400"
3372             disable vsx
3373         ;;
3374         g5|970|ppc970|powerpc970)
3375             cpuflags="-mcpu=970"
3376             disable vsx
3377         ;;
3378         power[3-6]*)
3379             cpuflags="-mcpu=$cpu"
3380             disable vsx
3381         ;;
3382         power[7-8]*)
3383             cpuflags="-mcpu=$cpu"
3384             enable ldbrx
3385         ;;
3386         cell)
3387             cpuflags="-mcpu=cell"
3388             enable ldbrx
3389             disable vsx
3390         ;;
3391         e500mc)
3392             cpuflags="-mcpu=e500mc"
3393             disable altivec
3394         ;;
3395         e500v2)
3396             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3397             disable altivec
3398             disable dcbzl
3399         ;;
3400         e500)
3401             cpuflags="-mcpu=8540 -mhard-float"
3402             disable altivec
3403             disable dcbzl
3404         ;;
3405     esac
3406
3407 elif enabled sparc; then
3408
3409     case $cpu in
3410         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3411             cpuflags="-mcpu=$cpu"
3412         ;;
3413         ultrasparc*|niagara[234])
3414             cpuflags="-mcpu=$cpu"
3415         ;;
3416     esac
3417
3418 elif enabled x86; then
3419
3420     case $cpu in
3421         i[345]86|pentium)
3422             cpuflags="-march=$cpu"
3423             disable i686
3424             disable mmx
3425         ;;
3426         # targets that do NOT support nopl and conditional mov (cmov)
3427         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3428             cpuflags="-march=$cpu"
3429             disable i686
3430         ;;
3431         # targets that do support nopl and conditional mov (cmov)
3432         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3433             cpuflags="-march=$cpu"
3434             enable i686
3435             enable fast_cmov
3436         ;;
3437         # targets that do support conditional mov but on which it's slow
3438         pentium4|pentium4m|prescott|nocona)
3439             cpuflags="-march=$cpu"
3440             enable i686
3441             disable fast_cmov
3442         ;;
3443     esac
3444
3445 fi
3446
3447 if [ "$cpu" != generic ]; then
3448     add_cflags  $cpuflags
3449     add_asflags $cpuflags
3450 fi
3451
3452 # compiler sanity check
3453 check_exec <<EOF
3454 int main(void){ return 0; }
3455 EOF
3456 if test "$?" != 0; then
3457     echo "$cc is unable to create an executable file."
3458     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3459         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3460         echo "Only do this if you know what cross compiling means."
3461     fi
3462     die "C compiler test failed."
3463 fi
3464
3465 add_cppflags -D_ISOC99_SOURCE
3466 check_cflags -std=c99
3467 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3468 #include <stdlib.h>
3469 EOF
3470 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3471 #include <stdlib.h>
3472 EOF
3473
3474 add_host_cppflags -D_ISOC99_SOURCE
3475 check_host_cflags -std=c99
3476 check_host_cflags -Wall
3477 check_host_cflags -O3
3478
3479 check_64bit(){
3480     arch32=$1
3481     arch64=$2
3482     expr=$3
3483     check_code cc "" "int test[2*($expr) - 1]" &&
3484         subarch=$arch64 || subarch=$arch32
3485 }
3486
3487 case "$arch" in
3488     aarch64|alpha|ia64)
3489         spic=$shared
3490     ;;
3491     mips)
3492         check_64bit mips mips64 '_MIPS_SIM > 1'
3493         spic=$shared
3494     ;;
3495     parisc)
3496         check_64bit parisc parisc64 'sizeof(void *) > 4'
3497         spic=$shared
3498     ;;
3499     ppc)
3500         check_64bit ppc ppc64 'sizeof(void *) > 4'
3501         spic=$shared
3502     ;;
3503     s390)
3504         check_64bit s390 s390x 'sizeof(void *) > 4'
3505         spic=$shared
3506     ;;
3507     sparc)
3508         check_64bit sparc sparc64 'sizeof(void *) > 4'
3509         spic=$shared
3510     ;;
3511     x86)
3512         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3513         if test "$subarch" = "x86_64"; then
3514             spic=$shared
3515         fi
3516     ;;
3517 esac
3518
3519 enable $subarch
3520 enabled spic && enable_weak pic
3521
3522 # OS specific
3523 case $target_os in
3524     aix)
3525         SHFLAGS=-shared
3526         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3527         enabled shared && add_ldflags -Wl,-brtl
3528         ;;
3529     android)
3530         disable symver
3531         enable section_data_rel_ro
3532         SLIB_INSTALL_NAME='$(SLIBNAME)'
3533         SLIB_INSTALL_LINKS=
3534         # soname not set on purpose
3535         SHFLAGS=-shared
3536         ;;
3537     haiku)
3538         prefix_default="/boot/common"
3539         network_extralibs="-lnetwork"
3540         host_libs=
3541         ;;
3542     sunos)
3543         SHFLAGS='-shared -Wl,-h,$$(@F)'
3544         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3545         network_extralibs="-lsocket -lnsl"
3546         # When using suncc to build, the Solaris linker will mark
3547         # an executable with each instruction set encountered by
3548         # the Solaris assembler.  As our libraries contain their own
3549         # guards for processor-specific code, instead suppress
3550         # generation of the HWCAPS ELF section on Solaris x86 only.
3551         enabled_all suncc x86 &&
3552             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3553             add_ldflags -Wl,-M,mapfile
3554         nm_default='nm -P -g'
3555         ;;
3556     netbsd)
3557         disable symver
3558         oss_indev_extralibs="-lossaudio"
3559         oss_outdev_extralibs="-lossaudio"
3560         ;;
3561     openbsd|bitrig)
3562         disable symver
3563         SHFLAGS='-shared'
3564         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3565         SLIB_INSTALL_LINKS=
3566         oss_indev_extralibs="-lossaudio"
3567         oss_outdev_extralibs="-lossaudio"
3568         ;;
3569     dragonfly)
3570         disable symver
3571         ;;
3572     freebsd)
3573         ;;
3574     bsd/os)
3575         add_extralibs -lpoll -lgnugetopt
3576         ;;
3577     darwin)
3578         enabled ppc && add_asflags -force_cpusubtype_ALL
3579         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3580         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3581         add_ldflags -Wl,-dynamic,-search_paths_first
3582         SLIBSUF=".dylib"
3583         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3584         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3585         objformat="macho"
3586         enabled x86_64 && objformat="macho64"
3587         enabled_any pic shared ||
3588             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3589         ;;
3590     mingw32*)
3591         if test $target_os = "mingw32ce"; then
3592             disable network
3593         else
3594             target_os=mingw32
3595         fi
3596         LIBTARGET=i386
3597         if enabled x86_64; then
3598             LIBTARGET="i386:x86-64"
3599         elif enabled arm; then
3600             LIBTARGET=arm-wince
3601         fi
3602         check_ldflags -Wl,--nxcompat
3603         check_ldflags -Wl,--dynamicbase
3604         shlibdir_default="$bindir_default"
3605         SLIBPREF=""
3606         SLIBSUF=".dll"
3607         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3608         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3609         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3610         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3611         SLIB_INSTALL_LINKS=
3612         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3613         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3614         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3615         objformat="win32"
3616         dlltool="${cross_prefix}dlltool"
3617         ranlib=:
3618         enable dos_paths
3619         ;;
3620     win32|win64)
3621         disable symver
3622         if enabled shared; then
3623             # Link to the import library instead of the normal static library
3624             # for shared libs.
3625             LD_LIB='%.lib'
3626             # Cannot build both shared and static libs with MSVC or icl.
3627             disable static
3628         fi
3629         shlibdir_default="$bindir_default"
3630         SLIBPREF=""
3631         SLIBSUF=".dll"
3632         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3633         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3634         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3635         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3636         SLIB_INSTALL_LINKS=
3637         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3638         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3639         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3640         objformat="win32"
3641         ranlib=:
3642         enable dos_paths
3643         ;;
3644     cygwin*)
3645         target_os=cygwin
3646         shlibdir_default="$bindir_default"
3647         SLIBPREF="cyg"
3648         SLIBSUF=".dll"
3649         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3650         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3651         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3652         SLIB_INSTALL_LINKS=
3653         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3654         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3655         objformat="win32"
3656         enable dos_paths
3657         ;;
3658     *-dos|freedos|opendos)
3659         network_extralibs="-lsocket"
3660         objformat="coff"
3661         enable dos_paths
3662         add_cppflags -U__STRICT_ANSI__
3663         ;;
3664     linux)
3665         enable dv1394
3666         enable section_data_rel_ro
3667         ;;
3668     irix*)
3669         target_os=irix
3670         ranlib="echo ignoring ranlib"
3671         ;;
3672     os/2*)
3673         ln_s="cp -f"
3674         objformat="aout"
3675         add_cppflags -D_GNU_SOURCE
3676         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3677         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3678         LIBSUF="_s.a"
3679         SLIBPREF=""
3680         SLIBSUF=".dll"
3681         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3682         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3683         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3684             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3685             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3686             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3687             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3688         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3689             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3690         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3691         enable dos_paths
3692         ;;
3693     gnu/kfreebsd)
3694         add_cppflags -D_BSD_SOURCE
3695         ;;
3696     gnu)
3697         ;;
3698     qnx)
3699         add_cppflags -D_QNX_SOURCE
3700         network_extralibs="-lsocket"
3701         ;;
3702     symbian)
3703         SLIBSUF=".dll"
3704         enable dos_paths
3705         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3706         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3707         add_ldflags -Wl,--target1-abs,--no-undefined \
3708                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3709                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3710         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3711                       -</