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

   1 #!/bin/sh
   2 #
   3 # Libav configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken Libav."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --prefix=PREFIX          install in PREFIX [$prefix]
  82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
  84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
  85   --libdir=DIR             install libs in DIR [PREFIX/lib]
  86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  87   --incdir=DIR             install includes in DIR [PREFIX/include]
  88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
  90
  91 Licensing options:
  92   --enable-gpl             allow use of GPL code, the resulting libs
  93                            and binaries will be under GPL [no]
  94   --enable-version3        upgrade (L)GPL to version 3 [no]
  95   --enable-nonfree         allow use of nonfree code, the resulting libs
  96                            and binaries will be unredistributable [no]
  97
  98 Configuration options:
  99   --disable-static         do not build static libraries [no]
 100   --enable-shared          build shared libraries [no]
 101   --enable-small           optimize for size instead of speed
 102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
 103   --enable-gray            enable full grayscale support (slower color)
 104   --disable-swscale-alpha  disable alpha channel support in swscale
 105   --disable-all            disable building components, libraries and programs
 106
 107 Program options:
 108   --disable-programs       do not build command line programs
 109   --disable-avconv         disable avconv build
 110   --disable-avplay         disable avplay build
 111   --disable-avprobe        disable avprobe build
 112   --disable-avserver       deprecated, does nothing
 113
 114 Component options:
 115   --disable-doc            do not build documentation
 116   --disable-avdevice       disable libavdevice build
 117   --disable-avcodec        disable libavcodec build
 118   --disable-avformat       disable libavformat build
 119   --disable-avutil         disable libavutil build
 120   --disable-swscale        disable libswscale build
 121   --disable-avfilter       disable video filter support [no]
 122   --disable-avresample     disable libavresample build [no]
 123   --disable-pthreads       disable pthreads [auto]
 124   --disable-w32threads     disable Win32 threads [auto]
 125   --disable-network        disable network support [no]
 126   --disable-dct            disable DCT code
 127   --disable-error-resilience disable error resilience code
 128   --disable-lsp            disable LSP code
 129   --disable-lzo            disable LZO decoder code
 130   --disable-mdct           disable MDCT code
 131   --disable-rdft           disable RDFT code
 132   --disable-fft            disable FFT code
 133   --disable-faan           disable floating point AAN (I)DCT code
 134
 135 Hardware accelerators:
 136   --enable-d3d11va         enable D3D11VA code
 137   --enable-dxva2           enable DXVA2 code
 138   --enable-vaapi           enable VAAPI code
 139   --enable-vda             enable VDA code
 140   --enable-vdpau           enable VDPAU code
 141
 142 Individual component options:
 143   --disable-everything     disable all components listed below
 144   --disable-encoder=NAME   disable encoder NAME
 145   --enable-encoder=NAME    enable encoder NAME
 146   --disable-encoders       disable all encoders
 147   --disable-decoder=NAME   disable decoder NAME
 148   --enable-decoder=NAME    enable decoder NAME
 149   --disable-decoders       disable all decoders
 150   --disable-hwaccel=NAME   disable hwaccel NAME
 151   --enable-hwaccel=NAME    enable hwaccel NAME
 152   --disable-hwaccels       disable all hwaccels
 153   --disable-muxer=NAME     disable muxer NAME
 154   --enable-muxer=NAME      enable muxer NAME
 155   --disable-muxers         disable all muxers
 156   --disable-demuxer=NAME   disable demuxer NAME
 157   --enable-demuxer=NAME    enable demuxer NAME
 158   --disable-demuxers       disable all demuxers
 159   --enable-parser=NAME     enable parser NAME
 160   --disable-parser=NAME    disable parser NAME
 161   --disable-parsers        disable all parsers
 162   --enable-bsf=NAME        enable bitstream filter NAME
 163   --disable-bsf=NAME       disable bitstream filter NAME
 164   --disable-bsfs           disable all bitstream filters
 165   --enable-protocol=NAME   enable protocol NAME
 166   --disable-protocol=NAME  disable protocol NAME
 167   --disable-protocols      disable all protocols
 168   --enable-indev=NAME      enable input device NAME
 169   --disable-indev=NAME     disable input device NAME
 170   --disable-indevs         disable input devices
 171   --enable-outdev=NAME     enable output device NAME
 172   --disable-outdev=NAME    disable output device NAME
 173   --disable-outdevs        disable output devices
 174   --disable-devices        disable all devices
 175   --enable-filter=NAME     enable filter NAME
 176   --disable-filter=NAME    disable filter NAME
 177   --disable-filters        disable all filters
 178
 179 External library support:
 180   --enable-avisynth        enable reading of AviSynth script files [no]
 181   --enable-bzlib           enable bzlib [autodetect]
 182   --enable-frei0r          enable frei0r video filtering
 183   --enable-gnutls          enable gnutls [no]
 184   --enable-libbs2b         enable bs2b DSP library [no]
 185   --enable-libcdio         enable audio CD grabbing with libcdio
 186   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 187                            and libraw1394 [no]
 188   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 189   --enable-libfaac         enable AAC encoding via libfaac [no]
 190   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 191   --enable-libfreetype     enable libfreetype [no]
 192   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 193   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 194   --enable-libmfx          enable HW acceleration through libmfx
 195   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 196   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 197   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 198   --enable-libopencv       enable video filtering via libopencv [no]
 199   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 200   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 201   --enable-libopus         enable Opus de/encoding via libopus [no]
 202   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 203   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 204   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 205   --enable-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     fmtconvert
1592     gcrypt
1593     gmp
1594     golomb
1595     gplv3
1596     h263dsp
1597     h264chroma
1598     h264dsp
1599     h264pred
1600     h264qpel
1601     hpeldsp
1602     huffman
1603     huffyuvdsp
1604     huffyuvencdsp
1605     idctdsp
1606     iirfilter
1607     imdct15
1608     intrax8
1609     jpegtables
1610     lgplv3
1611     lpc
1612     me_cmp
1613     mpeg_er
1614     mpegaudio
1615     mpegaudiodsp
1616     mpegvideo
1617     mpegvideoenc
1618     pixblockdsp
1619     qpeldsp
1620     qsv
1621     qsvdec
1622     qsvenc
1623     rangecoder
1624     riffdec
1625     riffenc
1626     rtpdec
1627     rtpenc_chain
1628     sinewin
1629     snappy
1630     startcode
1631     texturedsp
1632     texturedspenc
1633     tpeldsp
1634     videodsp
1635     vp3dsp
1636     wma_freqs
1637 "
1638
1639 CMDLINE_SELECT="
1640     $ARCH_EXT_LIST
1641     $CONFIG_LIST
1642     $HAVE_LIST_CMDLINE
1643     $THREADS_LIST
1644     asm
1645     cross_compile
1646     debug
1647     extra_warnings
1648     logging
1649     lto
1650     optimizations
1651     rpath
1652 "
1653
1654 PATHS_LIST="
1655     bindir
1656     datadir
1657     docdir
1658     incdir
1659     libdir
1660     mandir
1661     prefix
1662     shlibdir
1663 "
1664
1665 CMDLINE_SET="
1666     $PATHS_LIST
1667     ar
1668     arch
1669     as
1670     build_suffix
1671     cc
1672     cpu
1673     cross_prefix
1674     dep_cc
1675     env
1676     extra_version
1677     host_cc
1678     host_cflags
1679     host_ld
1680     host_ldflags
1681     host_libs
1682     host_os
1683     ld
1684     logfile
1685     malloc_prefix
1686     nm
1687     optflags
1688     pkg_config
1689     pkg_config_flags
1690     random_seed
1691     samples
1692     sysinclude
1693     sysroot
1694     target_exec
1695     target_os
1696     target_path
1697     target_samples
1698     toolchain
1699 "
1700
1701 CMDLINE_APPEND="
1702     extra_cflags
1703     host_cppflags
1704 "
1705
1706 # code dependency declarations
1707
1708 # architecture extensions
1709
1710 armv5te_deps="arm"
1711 armv6_deps="arm"
1712 armv6t2_deps="arm"
1713 armv8_deps="aarch64"
1714 neon_deps_any="aarch64 arm"
1715 intrinsics_neon_deps="neon"
1716 vfp_deps_any="aarch64 arm"
1717 vfpv3_deps="vfp"
1718
1719 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1720
1721 altivec_deps="ppc"
1722 ppc4xx_deps="ppc"
1723 vsx_deps="altivec"
1724 power8_deps="vsx"
1725
1726 cpunop_deps="i686"
1727 x86_64_select="i686"
1728 x86_64_suggest="fast_cmov"
1729
1730 amd3dnow_deps="mmx"
1731 amd3dnowext_deps="amd3dnow"
1732 i686_deps="x86"
1733 mmx_deps="x86"
1734 mmxext_deps="mmx"
1735 sse_deps="mmxext"
1736 sse2_deps="sse"
1737 sse3_deps="sse2"
1738 ssse3_deps="sse3"
1739 sse4_deps="ssse3"
1740 sse42_deps="sse4"
1741 avx_deps="sse42"
1742 xop_deps="avx"
1743 fma3_deps="avx"
1744 fma4_deps="avx"
1745 avx2_deps="avx"
1746
1747 mmx_external_deps="yasm"
1748 mmx_inline_deps="inline_asm"
1749 mmx_suggest="mmx_external mmx_inline"
1750
1751 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1752     eval dep=\$${ext}_deps
1753     eval ${ext}_external_deps='"${dep}_external"'
1754     eval ${ext}_inline_deps='"${dep}_inline"'
1755     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1756 done
1757
1758 aligned_stack_if_any="aarch64 ppc x86"
1759 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1760 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1761 fast_unaligned_if_any="aarch64 ppc x86"
1762 simd_align_16_if_any="altivec neon sse"
1763
1764 # system capabilities
1765 symver_if_any="symver_asm_label symver_gnu_asm"
1766 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1767
1768 # threading support
1769 atomics_gcc_if="sync_val_compare_and_swap"
1770 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1771 atomics_win32_if="MemoryBarrier"
1772 atomics_native_if_any="$ATOMICS_LIST"
1773 w32threads_deps="atomics_native"
1774 threads_if_any="$THREADS_LIST"
1775
1776 # subsystems
1777 dct_select="rdft"
1778 error_resilience_select="me_cmp"
1779 faandct_deps="faan fdctdsp"
1780 faanidct_deps="faan idctdsp"
1781 intrax8_select="error_resilience"
1782 mdct_select="fft"
1783 rdft_select="fft"
1784 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1785 mpeg_er_select="error_resilience"
1786 mpegaudio_select="mpegaudiodsp"
1787 mpegaudiodsp_select="dct"
1788 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1789 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1790 nvenc_deps_any="dlopen LoadLibrary"
1791 nvenc_extralibs='$ldl'
1792 qsvdec_select="qsv"
1793 qsvenc_select="qsv"
1794
1795 # decoders / encoders
1796 aac_decoder_select="imdct15 mdct sinewin"
1797 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1798 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1799 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1800 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1801 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1802 aic_decoder_select="golomb idctdsp"
1803 alac_encoder_select="lpc"
1804 als_decoder_select="bswapdsp"
1805 amrnb_decoder_select="lsp"
1806 amrwb_decoder_select="lsp"
1807 amv_decoder_select="sp5x_decoder"
1808 ape_decoder_select="bswapdsp"
1809 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1810 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1811 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1812 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1813 atrac1_decoder_select="mdct sinewin"
1814 atrac3_decoder_select="mdct"
1815 atrac3p_decoder_select="mdct sinewin"
1816 bink_decoder_select="blockdsp hpeldsp"
1817 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1818 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1819 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1820 cllc_decoder_select="bswapdsp"
1821 comfortnoise_encoder_select="lpc"
1822 cook_decoder_select="audiodsp mdct sinewin"
1823 cscd_decoder_select="lzo"
1824 cscd_decoder_suggest="zlib"
1825 dca_decoder_select="fmtconvert mdct"
1826 dds_decoder_select="texturedsp"
1827 dnxhd_decoder_select="blockdsp idctdsp"
1828 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1829 dvvideo_decoder_select="dvprofile idctdsp"
1830 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1831 dxa_decoder_deps="zlib"
1832 eac3_decoder_select="ac3_decoder"
1833 eac3_encoder_select="ac3_encoder"
1834 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1835 eatgq_decoder_select="aandcttables idctdsp"
1836 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1837 exr_decoder_deps="zlib"
1838 ffv1_decoder_select="golomb rangecoder"
1839 ffv1_encoder_select="rangecoder"
1840 ffvhuff_decoder_select="huffyuv_decoder"
1841 ffvhuff_encoder_select="huffyuv_encoder"
1842 fic_decoder_select="golomb"
1843 flac_decoder_select="golomb"
1844 flac_encoder_select="bswapdsp golomb lpc"
1845 flashsv_decoder_deps="zlib"
1846 flashsv_encoder_deps="zlib"
1847 flashsv2_decoder_deps="zlib"
1848 flv_decoder_select="h263_decoder"
1849 flv_encoder_select="h263_encoder"
1850 fourxm_decoder_select="blockdsp bswapdsp"
1851 fraps_decoder_select="bswapdsp huffman"
1852 g2m_decoder_deps="zlib"
1853 g2m_decoder_select="blockdsp idctdsp jpegtables"
1854 h261_decoder_select="mpeg_er mpegvideo"
1855 h261_encoder_select="aandcttables mpegvideoenc"
1856 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1857 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1858 h263i_decoder_select="h263_decoder"
1859 h263p_encoder_select="h263_encoder"
1860 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1861 h264_decoder_suggest="error_resilience"
1862 h264_nvenc_encoder_deps="nvenc"
1863 h264_qsv_decoder_deps="libmfx"
1864 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1865 h264_qsv_encoder_deps="libmfx"
1866 h264_qsv_encoder_select="qsvenc"
1867 hap_decoder_select="snappy texturedsp"
1868 hap_encoder_deps="libsnappy"
1869 hap_encoder_select="texturedspenc"
1870 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1871 hevc_nvenc_encoder_deps="nvenc"
1872 hevc_qsv_encoder_deps="libmfx"
1873 hevc_qsv_encoder_select="qsvenc"
1874 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1875 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1876 iac_decoder_select="imc_decoder"
1877 imc_decoder_select="bswapdsp fft mdct sinewin"
1878 indeo3_decoder_select="hpeldsp"
1879 interplay_video_decoder_select="hpeldsp"
1880 jpegls_decoder_select="golomb mjpeg_decoder"
1881 jpegls_encoder_select="golomb"
1882 jv_decoder_select="blockdsp"
1883 lagarith_decoder_select="huffyuvdsp"
1884 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1885 loco_decoder_select="golomb"
1886 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1887 metasound_decoder_select="lsp mdct sinewin"
1888 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1889 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1890 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1891 mjpegb_decoder_select="mjpeg_decoder"
1892 mlp_decoder_select="mlp_parser"
1893 motionpixels_decoder_select="bswapdsp"
1894 mp1_decoder_select="mpegaudio"
1895 mp1float_decoder_select="mpegaudio"
1896 mp2_decoder_select="mpegaudio"
1897 mp2float_decoder_select="mpegaudio"
1898 mp3_decoder_select="mpegaudio"
1899 mp3adu_decoder_select="mpegaudio"
1900 mp3adufloat_decoder_select="mpegaudio"
1901 mp3float_decoder_select="mpegaudio"
1902 mp3on4_decoder_select="mpegaudio"
1903 mp3on4float_decoder_select="mpegaudio"
1904 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1905 mpc8_decoder_select="mpegaudiodsp"
1906 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1907 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1908 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1909 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1910 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1911 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1912 mpeg2_qsv_encoder_deps="libmfx"
1913 mpeg2_qsv_encoder_select="qsvenc"
1914 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1915 mpeg4_encoder_select="h263_encoder"
1916 msmpeg4v1_decoder_select="h263_decoder"
1917 msmpeg4v2_decoder_select="h263_decoder"
1918 msmpeg4v2_encoder_select="h263_encoder"
1919 msmpeg4v3_decoder_select="h263_decoder"
1920 msmpeg4v3_encoder_select="h263_encoder"
1921 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1922 mxpeg_decoder_select="mjpeg_decoder"
1923 nellymoser_decoder_select="mdct sinewin"
1924 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1925 nuv_decoder_select="idctdsp lzo"
1926 on2avc_decoder_select="mdct"
1927 opus_decoder_deps="avresample"
1928 opus_decoder_select="imdct15"
1929 png_decoder_deps="zlib"
1930 png_encoder_deps="zlib"
1931 png_encoder_select="huffyuvencdsp"
1932 prores_decoder_select="idctdsp"
1933 prores_encoder_select="fdctdsp"
1934 qcelp_decoder_select="lsp"
1935 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1936 ra_144_encoder_select="audio_frame_queue lpc"
1937 ralf_decoder_select="golomb"
1938 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1939 rv10_encoder_select="h263_encoder"
1940 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1941 rv20_encoder_select="h263_encoder"
1942 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1943 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1944 shorten_decoder_select="golomb"
1945 sipr_decoder_select="lsp"
1946 sp5x_decoder_select="mjpeg_decoder"
1947 svq1_decoder_select="hpeldsp"
1948 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1949 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1950 svq3_decoder_suggest="zlib"
1951 tak_decoder_select="audiodsp"
1952 tdsc_decoder_deps="zlib"
1953 tdsc_decoder_select="mjpeg_decoder"
1954 theora_decoder_select="vp3_decoder"
1955 thp_decoder_select="mjpeg_decoder"
1956 tiff_decoder_suggest="zlib"
1957 tiff_encoder_suggest="zlib"
1958 truehd_decoder_select="mlp_decoder"
1959 truemotion2_decoder_select="bswapdsp"
1960 truespeech_decoder_select="bswapdsp"
1961 tscc_decoder_deps="zlib"
1962 txd_decoder_select="texturedsp"
1963 twinvq_decoder_select="mdct lsp sinewin"
1964 utvideo_decoder_select="bswapdsp"
1965 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1966 vble_decoder_select="huffyuvdsp"
1967 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1968 vc1image_decoder_select="vc1_decoder"
1969 vorbis_decoder_select="mdct"
1970 vorbis_encoder_select="mdct"
1971 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1972 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1973 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1974 vp6a_decoder_select="vp6_decoder"
1975 vp6f_decoder_select="vp6_decoder"
1976 vp7_decoder_select="h264pred videodsp"
1977 vp8_decoder_select="h264pred videodsp"
1978 vp9_decoder_select="videodsp"
1979 webp_decoder_select="vp8_decoder"
1980 wmapro_decoder_select="mdct sinewin wma_freqs"
1981 wmav1_decoder_select="mdct sinewin wma_freqs"
1982 wmav1_encoder_select="mdct sinewin wma_freqs"
1983 wmav2_decoder_select="mdct sinewin wma_freqs"
1984 wmav2_encoder_select="mdct sinewin wma_freqs"
1985 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1986 wmv1_decoder_select="h263_decoder"
1987 wmv1_encoder_select="h263_encoder"
1988 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1989 wmv2_encoder_select="h263_encoder"
1990 wmv3_decoder_select="vc1_decoder"
1991 wmv3image_decoder_select="wmv3_decoder"
1992 zerocodec_decoder_deps="zlib"
1993 zlib_decoder_deps="zlib"
1994 zlib_encoder_deps="zlib"
1995 zmbv_decoder_deps="zlib"
1996 zmbv_encoder_deps="zlib"
1997
1998 # hardware accelerators
1999 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2000 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2001 vaapi_deps="va_va_h"
2002 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2003 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2004 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2005
2006 h263_vaapi_hwaccel_deps="vaapi"
2007 h263_vaapi_hwaccel_select="h263_decoder"
2008 h263_vdpau_hwaccel_deps="vdpau"
2009 h263_vdpau_hwaccel_select="h263_decoder"
2010 h264_d3d11va_hwaccel_deps="d3d11va"
2011 h264_d3d11va_hwaccel_select="h264_decoder"
2012 h264_dxva2_hwaccel_deps="dxva2"
2013 h264_dxva2_hwaccel_select="h264_decoder"
2014 h264_mmal_decoder_deps="mmal"
2015 h264_mmal_hwaccel_deps="mmal"
2016 h264_mmal_decoder_select="h264_decoder"
2017 h264_mmal_encoder_deps="mmal"
2018 h264_qsv_hwaccel_deps="libmfx"
2019 h264_vaapi_hwaccel_deps="vaapi"
2020 h264_vaapi_hwaccel_select="h264_decoder"
2021 h264_vda_hwaccel_deps="vda"
2022 h264_vda_hwaccel_select="h264_decoder"
2023 h264_vda_old_hwaccel_deps="vda"
2024 h264_vda_old_hwaccel_select="h264_decoder"
2025 h264_vdpau_hwaccel_deps="vdpau"
2026 h264_vdpau_hwaccel_select="h264_decoder"
2027 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2028 hevc_d3d11va_hwaccel_select="hevc_decoder"
2029 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2030 hevc_dxva2_hwaccel_select="hevc_decoder"
2031 mpeg1_vdpau_hwaccel_deps="vdpau"
2032 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2033 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2034 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2035 mpeg2_dxva2_hwaccel_deps="dxva2"
2036 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2037 mpeg2_vaapi_hwaccel_deps="vaapi"
2038 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2039 mpeg2_vdpau_hwaccel_deps="vdpau"
2040 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2041 mpeg4_vaapi_hwaccel_deps="vaapi"
2042 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2043 mpeg4_vdpau_hwaccel_deps="vdpau"
2044 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2045 vc1_d3d11va_hwaccel_deps="d3d11va"
2046 vc1_d3d11va_hwaccel_select="vc1_decoder"
2047 vc1_dxva2_hwaccel_deps="dxva2"
2048 vc1_dxva2_hwaccel_select="vc1_decoder"
2049 vc1_vaapi_hwaccel_deps="vaapi"
2050 vc1_vaapi_hwaccel_select="vc1_decoder"
2051 vc1_vdpau_hwaccel_deps="vdpau"
2052 vc1_vdpau_hwaccel_select="vc1_decoder"
2053 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2054 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2055 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2056 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2057
2058 # parsers
2059 h264_parser_select="h264_decoder"
2060 mpegvideo_parser_select="mpegvideo"
2061 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2062 vc1_parser_select="mpegvideo startcode vc1_decoder"
2063
2064 # bitstream_filters
2065 mjpeg2jpeg_bsf_select="jpegtables"
2066
2067 # external libraries
2068 libdcadec_decoder_deps="libdcadec"
2069 libfaac_encoder_deps="libfaac"
2070 libfaac_encoder_select="audio_frame_queue"
2071 libfdk_aac_decoder_deps="libfdk_aac"
2072 libfdk_aac_encoder_deps="libfdk_aac"
2073 libfdk_aac_encoder_select="audio_frame_queue"
2074 libgsm_decoder_deps="libgsm"
2075 libgsm_encoder_deps="libgsm"
2076 libgsm_ms_decoder_deps="libgsm"
2077 libgsm_ms_encoder_deps="libgsm"
2078 libilbc_decoder_deps="libilbc"
2079 libilbc_encoder_deps="libilbc"
2080 libmp3lame_encoder_deps="libmp3lame"
2081 libmp3lame_encoder_select="audio_frame_queue"
2082 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2083 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2084 libopencore_amrnb_encoder_select="audio_frame_queue"
2085 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2086 libopenh264_encoder_deps="libopenh264"
2087 libopenjpeg_decoder_deps="libopenjpeg"
2088 libopenjpeg_encoder_deps="libopenjpeg"
2089 libopus_decoder_deps="libopus"
2090 libopus_encoder_deps="libopus"
2091 libopus_encoder_select="audio_frame_queue"
2092 libschroedinger_decoder_deps="libschroedinger"
2093 libschroedinger_encoder_deps="libschroedinger"
2094 libspeex_decoder_deps="libspeex"
2095 libspeex_encoder_deps="libspeex"
2096 libspeex_encoder_select="audio_frame_queue"
2097 libtheora_encoder_deps="libtheora"
2098 libtwolame_encoder_deps="libtwolame"
2099 libvo_aacenc_encoder_deps="libvo_aacenc"
2100 libvo_aacenc_encoder_select="audio_frame_queue"
2101 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2102 libvorbis_encoder_deps="libvorbis"
2103 libvorbis_encoder_select="audio_frame_queue"
2104 libvpx_vp8_decoder_deps="libvpx"
2105 libvpx_vp8_encoder_deps="libvpx"
2106 libvpx_vp9_decoder_deps="libvpx"
2107 libvpx_vp9_encoder_deps="libvpx"
2108 libwavpack_encoder_deps="libwavpack"
2109 libwebp_encoder_deps="libwebp"
2110 libx264_encoder_deps="libx264"
2111 libx265_encoder_deps="libx265"
2112 libxavs_encoder_deps="libxavs"
2113 libxvid_encoder_deps="libxvid"
2114
2115 # demuxers / muxers
2116 ac3_demuxer_select="ac3_parser"
2117 asf_demuxer_select="riffdec"
2118 asf_muxer_select="riffenc"
2119 asf_stream_muxer_select="asf_muxer"
2120 avi_demuxer_select="riffdec"
2121 avi_muxer_select="riffenc"
2122 avisynth_demuxer_deps="avisynth"
2123 avisynth_demuxer_select="riffdec"
2124 caf_demuxer_select="riffdec"
2125 dash_muxer_select="mp4_muxer"
2126 dirac_demuxer_select="dirac_parser"
2127 dv_demuxer_select="dvprofile"
2128 dv_muxer_select="dvprofile"
2129 dxa_demuxer_select="riffdec"
2130 eac3_demuxer_select="ac3_parser"
2131 f4v_muxer_select="mov_muxer"
2132 flac_demuxer_select="flac_parser"
2133 hds_muxer_select="flv_muxer"
2134 hls_muxer_select="mpegts_muxer"
2135 ipod_muxer_select="mov_muxer"
2136 ismv_muxer_select="mov_muxer"
2137 matroska_audio_muxer_select="matroska_muxer"
2138 matroska_demuxer_select="riffdec"
2139 matroska_demuxer_suggest="bzlib lzo zlib"
2140 matroska_muxer_select="riffenc"
2141 mmf_muxer_select="riffenc"
2142 mov_demuxer_select="riffdec"
2143 mov_demuxer_suggest="zlib"
2144 mov_muxer_select="riffenc rtpenc_chain"
2145 mp3_demuxer_select="mpegaudio_parser"
2146 mp4_muxer_select="mov_muxer"
2147 mpegts_muxer_select="adts_muxer latm_muxer"
2148 mpegtsraw_demuxer_select="mpegts_demuxer"
2149 mxf_d10_muxer_select="mxf_muxer"
2150 nut_muxer_select="riffenc"
2151 nuv_demuxer_select="riffdec"
2152 oga_muxer_select="ogg_muxer"
2153 ogg_demuxer_select="golomb"
2154 opus_muxer_select="ogg_muxer"
2155 psp_muxer_select="mov_muxer"
2156 rtp_demuxer_select="sdp_demuxer"
2157 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2158 rtsp_demuxer_select="http_protocol rtpdec"
2159 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2160 sap_demuxer_select="sdp_demuxer"
2161 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2162 sdp_demuxer_select="rtpdec"
2163 smoothstreaming_muxer_select="ismv_muxer"
2164 spdif_muxer_select="aac_parser"
2165 spx_muxer_select="ogg_muxer"
2166 tak_demuxer_select="tak_parser"
2167 tg2_muxer_select="mov_muxer"
2168 tgp_muxer_select="mov_muxer"
2169 w64_demuxer_select="wav_demuxer"
2170 wav_demuxer_select="riffdec"
2171 wav_muxer_select="riffenc"
2172 webm_muxer_select="riffenc"
2173 wtv_demuxer_select="riffdec"
2174 xmv_demuxer_select="riffdec"
2175 xwma_demuxer_select="riffdec"
2176
2177 # indevs / outdevs
2178 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2179 alsa_outdev_deps="alsa_asoundlib_h"
2180 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2181 dv1394_indev_deps="dv1394"
2182 dv1394_indev_select="dv_demuxer"
2183 fbdev_indev_deps="linux_fb_h"
2184 jack_indev_deps="jack_jack_h pthreads"
2185 libcdio_indev_deps="libcdio"
2186 libdc1394_indev_deps="libdc1394"
2187 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2188 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2189 pulse_indev_deps="libpulse"
2190 sndio_indev_deps="sndio_h"
2191 sndio_outdev_deps="sndio_h"
2192 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2193 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2194 vfwcap_indev_extralibs="-lavicap32"
2195 x11grab_indev_deps="x11grab"
2196 x11grab_xcb_indev_deps="libxcb"
2197
2198 # protocols
2199 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2200 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2201 ffrtmpcrypt_protocol_select="tcp_protocol"
2202 ffrtmphttp_protocol_deps="!librtmp_protocol"
2203 ffrtmphttp_protocol_select="http_protocol"
2204 gopher_protocol_select="network"
2205 http_protocol_select="tcp_protocol"
2206 httpproxy_protocol_select="tcp_protocol"
2207 https_protocol_select="tls_protocol"
2208 icecast_protocol_select="http_protocol"
2209 librtmp_protocol_deps="librtmp"
2210 librtmpe_protocol_deps="librtmp"
2211 librtmps_protocol_deps="librtmp"
2212 librtmpt_protocol_deps="librtmp"
2213 librtmpte_protocol_deps="librtmp"
2214 mmsh_protocol_select="http_protocol"
2215 mmst_protocol_select="network"
2216 rtmp_protocol_deps="!librtmp_protocol"
2217 rtmp_protocol_select="tcp_protocol"
2218 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2219 rtmps_protocol_deps="!librtmp_protocol"
2220 rtmps_protocol_select="tls_protocol"
2221 rtmpt_protocol_select="ffrtmphttp_protocol"
2222 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2223 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2224 rtp_protocol_select="udp_protocol"
2225 sctp_protocol_deps="struct_sctp_event_subscribe"
2226 sctp_protocol_select="network"
2227 srtp_protocol_select="rtp_protocol"
2228 tcp_protocol_select="network"
2229 tls_gnutls_protocol_deps="gnutls"
2230 tls_gnutls_protocol_select="tcp_protocol"
2231 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2232 tls_openssl_protocol_select="tcp_protocol"
2233 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2234 udp_protocol_select="network"
2235 unix_protocol_deps="sys_un_h"
2236 unix_protocol_select="network"
2237
2238 # filters
2239 blackframe_filter_deps="gpl"
2240 boxblur_filter_deps="gpl"
2241 bs2b_filter_deps="libbs2b"
2242 cropdetect_filter_deps="gpl"
2243 delogo_filter_deps="gpl"
2244 drawtext_filter_deps="libfreetype"
2245 frei0r_filter_deps="frei0r dlopen"
2246 frei0r_filter_extralibs='$ldl'
2247 frei0r_src_filter_deps="frei0r dlopen"
2248 frei0r_src_filter_extralibs='$ldl'
2249 hqdn3d_filter_deps="gpl"
2250 interlace_filter_deps="gpl"
2251 ocv_filter_deps="libopencv"
2252 resample_filter_deps="avresample"
2253 scale_filter_deps="swscale"
2254
2255 # examples
2256 avcodec_example_deps="avcodec avutil"
2257 filter_audio_example_deps="avfilter avutil"
2258 metadata_example_deps="avformat avutil"
2259 output_example_deps="avcodec avformat avutil swscale"
2260 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2261 transcode_aac_example_deps="avcodec avformat avresample"
2262
2263 # libraries, in linking order
2264 avcodec_deps="avutil"
2265 avdevice_deps="avformat avcodec avutil"
2266 avfilter_deps="avutil"
2267 avformat_deps="avcodec avutil"
2268 avresample_deps="avutil"
2269 swscale_deps="avutil"
2270
2271 # programs
2272 avconv_deps="avcodec avfilter avformat avresample swscale"
2273 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2274                fps_filter null_filter resample_filter scale_filter
2275                setpts_filter trim_filter"
2276 avplay_deps="avcodec avformat avresample swscale sdl"
2277 avplay_libs='$sdl_libs'
2278 avplay_select="rdft transpose_filter hflip_filter vflip_filter"
2279 avprobe_deps="avcodec avformat"
2280
2281 # documentation
2282 pod2man_deps="doc"
2283 texi2html_deps="doc"
2284
2285 # default parameters
2286
2287 logfile="config.log"
2288
2289 # installation paths
2290 prefix_default="/usr/local"
2291 bindir_default='${prefix}/bin'
2292 datadir_default='${prefix}/share/avconv'
2293 docdir_default='${prefix}/share/doc/libav'
2294 incdir_default='${prefix}/include'
2295 libdir_default='${prefix}/lib'
2296 mandir_default='${prefix}/share/man'
2297 shlibdir_default="$libdir_default"
2298
2299 # toolchain
2300 ar_default="ar"
2301 cc_default="gcc"
2302 host_cc_default="gcc"
2303 cp_f="cp -f"
2304 ln_s="ln -s -f"
2305 nm_default="nm -g"
2306 objformat="elf"
2307 pkg_config_default=pkg-config
2308 ranlib="ranlib"
2309 strip="strip"
2310 yasmexe="yasm"
2311
2312 # machine
2313 arch_default=$(uname -m)
2314 cpu="generic"
2315 intrinsics="none"
2316
2317 # OS
2318 target_os_default=$(tolower $(uname -s))
2319 host_os=$target_os_default
2320
2321 # configurable options
2322 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2323
2324 enable asm
2325 enable debug
2326 enable doc
2327 enable faan faandct faanidct
2328 enable optimizations
2329 enable safe_bitstream_reader
2330 enable static
2331 enable swscale_alpha
2332 enable valgrind_backtrace
2333
2334 # By default, enable only those hwaccels that have no external dependencies.
2335 enable d3d11va dxva2 vda vdpau
2336
2337 # build settings
2338 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2339 LIBPREF="lib"
2340 LIBSUF=".a"
2341 FULLNAME='$(NAME)$(BUILDSUF)'
2342 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2343 SLIBPREF="lib"
2344 SLIBSUF=".so"
2345 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2346 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2347 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2348 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2349 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2350 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2351
2352 asflags_filter=echo
2353 cflags_filter=echo
2354 ldflags_filter=echo
2355
2356 AS_C='-c'
2357 AS_O='-o $@'
2358 CC_C='-c'
2359 CC_E='-E -o $@'
2360 CC_O='-o $@'
2361 LD_O='-o $@'
2362 LD_LIB='-l%'
2363 LD_PATH='-L'
2364 HOSTCC_C='-c'
2365 HOSTCC_E='-E -o $@'
2366 HOSTCC_O='-o $@'
2367 HOSTLD_O='-o $@'
2368
2369 host_libs='-lm'
2370 host_cflags_filter=echo
2371 host_ldflags_filter=echo
2372
2373 target_path='$(CURDIR)'
2374
2375 # since the object filename is not given with the -MM flag, the compiler
2376 # is only able to print the basename, and we must add the path ourselves
2377 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2378 DEPFLAGS='-MM'
2379
2380 # find source path
2381 if test -f configure; then
2382     source_path=.
2383 else
2384     source_path=$(cd $(dirname "$0"); pwd)
2385     echo "$source_path" | grep -q '[[:blank:]]' &&
2386         die "Out of tree builds are impossible with whitespace in source path."
2387     test -e "$source_path/config.h" &&
2388         die "Out of tree builds are impossible with config.h in source dir."
2389 fi
2390
2391 for v in "$@"; do
2392     r=${v#*=}
2393     l=${v%"$r"}
2394     r=$(sh_quote "$r")
2395     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2396 done
2397
2398 find_things(){
2399     thing=$1
2400     pattern=$2
2401     file=$source_path/$3
2402     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2403 }
2404
2405 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2406 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2407 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2408 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2409 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2410 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2411 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2412 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2413 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2414 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2415 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2416
2417 ALL_COMPONENTS="
2418     $BSF_LIST
2419     $DECODER_LIST
2420     $DEMUXER_LIST
2421     $ENCODER_LIST
2422     $FILTER_LIST
2423     $HWACCEL_LIST
2424     $INDEV_LIST
2425     $MUXER_LIST
2426     $OUTDEV_LIST
2427     $PARSER_LIST
2428     $PROTOCOL_LIST
2429 "
2430
2431 for n in $COMPONENT_LIST; do
2432     v=$(toupper ${n%s})_LIST
2433     eval enable \$$v
2434     eval ${n}_if_any="\$$v"
2435 done
2436
2437 enable $ARCH_EXT_LIST
2438
2439 die_unknown(){
2440     echo "Unknown option \"$1\"."
2441     echo "See $0 --help for available options."
2442     exit 1
2443 }
2444
2445 print_3_columns() {
2446     cat | tr ' ' '\n' | sort | pr -r -3 -t
2447 }
2448
2449 show_list() {
2450     suffix=_$1
2451     shift
2452     echo $* | sed s/$suffix//g | print_3_columns
2453     exit 0
2454 }
2455
2456 rand_list(){
2457     IFS=', '
2458     set -- $*
2459     unset IFS
2460     for thing; do
2461         comp=${thing%:*}
2462         prob=${thing#$comp}
2463         prob=${prob#:}
2464         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2465         echo "prob ${prob:-0.5}"
2466         printf '%s\n' $comp
2467     done
2468 }
2469
2470 do_random(){
2471     action=$1
2472     shift
2473     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2474     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2475 }
2476
2477 for opt do
2478     optval="${opt#*=}"
2479     case "$opt" in
2480         --extra-ldflags=*)
2481             add_ldflags $optval
2482         ;;
2483         --extra-ldexeflags=*)
2484             add_ldexeflags $optval
2485         ;;
2486         --extra-libs=*)
2487             add_extralibs $optval
2488         ;;
2489         --disable-devices)
2490             disable $INDEV_LIST $OUTDEV_LIST
2491         ;;
2492         --enable-debug=*)
2493             debuglevel="$optval"
2494         ;;
2495         --disable-programs)
2496             disable $PROGRAM_LIST
2497         ;;
2498         --disable-everything)
2499             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2500         ;;
2501         --disable-all)
2502             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2503             disable $LIBRARY_LIST $PROGRAM_LIST doc
2504         ;;
2505         --enable-random|--disable-random)
2506             action=${opt%%-random}
2507             do_random ${action#--} $COMPONENT_LIST
2508         ;;
2509         --enable-random=*|--disable-random=*)
2510             action=${opt%%-random=*}
2511             do_random ${action#--} $optval
2512         ;;
2513         --enable-*=*|--disable-*=*)
2514             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2515             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2516             eval list=\$$(toupper $thing)_LIST
2517             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2518             $action $(filter "$name" $list)
2519         ;;
2520         --enable-avserver|--disable-avserver*)
2521             warn "avserver has been removed, the ${opt} option is only"\
2522                  "provided for compatibility and will be removed in the future"
2523         ;;
2524         --enable-?*|--disable-?*)
2525             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2526             if is_in $option $COMPONENT_LIST; then
2527                 test $action = disable && action=unset
2528                 eval $action \$$(toupper ${option%s})_LIST
2529             elif is_in $option $CMDLINE_SELECT; then
2530                 $action $option
2531             else
2532                 die_unknown $opt
2533             fi
2534         ;;
2535         --list-*)
2536             NAME="${opt#--list-}"
2537             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2538             NAME=${NAME%s}
2539             eval show_list $NAME \$$(toupper $NAME)_LIST
2540         ;;
2541         --help|-h) show_help
2542         ;;
2543         *)
2544             optname="${opt%%=*}"
2545             optname="${optname#--}"
2546             optname=$(echo "$optname" | sed 's/-/_/g')
2547             if is_in $optname $CMDLINE_SET; then
2548                 eval $optname='$optval'
2549             elif is_in $optname $CMDLINE_APPEND; then
2550                 append $optname "$optval"
2551             else
2552                 die_unknown $opt
2553             fi
2554         ;;
2555     esac
2556 done
2557
2558 for e in $env; do
2559     eval "export $e"
2560 done
2561
2562 disabled logging && logfile=/dev/null
2563
2564 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2565 set >> $logfile
2566
2567 case "$toolchain" in
2568     clang-asan)
2569         cc_default="clang"
2570         add_cflags  -fsanitize=address
2571         add_ldflags -fsanitize=address
2572     ;;
2573     clang-tsan)
2574         cc_default="clang"
2575         add_cflags  -fsanitize=thread -pie
2576         add_ldflags -fsanitize=thread -pie
2577     ;;
2578     clang-usan)
2579         cc_default="clang"
2580         add_cflags  -fsanitize=undefined -O1
2581         add_ldflags -fsanitize=undefined
2582     ;;
2583     gcc-asan)
2584         cc_default="gcc"
2585         add_cflags  -fsanitize=address
2586         add_ldflags -fsanitize=address
2587     ;;
2588     gcc-tsan)
2589         cc_default="gcc"
2590         add_cflags  -fsanitize=thread -pie -fPIC
2591         add_ldflags -fsanitize=thread -pie -fPIC
2592     ;;
2593     gcc-usan)
2594         cc_default="gcc"
2595         add_cflags  -fsanitize=undefined
2596         add_ldflags -fsanitize=undefined
2597     ;;
2598     valgrind-massif)
2599         target_exec_default="valgrind"
2600         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2601     ;;
2602     valgrind-memcheck)
2603         target_exec_default="valgrind"
2604         target_exec_args="--track-origins=yes --leak-check=full"
2605     ;;
2606     msvc)
2607         # Check whether the current MSVC version needs the C99 converter.
2608         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2609         # support enough of C99 to build libav. Default to the new
2610         # behaviour if the regexp was unable to match anything, since this
2611         # successfully parses the version number of existing supported
2612         # versions that require the converter (MSVC 2010 and 2012).
2613         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2614         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2615             cc_default="cl"
2616         else
2617             cc_default="c99wrap cl"
2618         fi
2619         ld_default="link"
2620         nm_default="dumpbin -symbols"
2621         ar_default="lib"
2622         target_os_default="win32"
2623         # Use a relative path for TMPDIR. This makes sure all the
2624         # ffconf temp files are written with a relative path, avoiding
2625         # issues with msys/win32 path conversion for MSVC parameters
2626         # such as -Fo<file> or -out:<file>.
2627         TMPDIR=.
2628     ;;
2629     icl)
2630         cc_default="icl"
2631         ld_default="xilink"
2632         nm_default="dumpbin -symbols"
2633         ar_default="xilib"
2634         target_os_default="win32"
2635         TMPDIR=.
2636     ;;
2637     gcov)
2638         add_cflags  -fprofile-arcs -ftest-coverage
2639         add_ldflags -fprofile-arcs -ftest-coverage
2640     ;;
2641     hardened)
2642         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2643         add_cflags   -fno-strict-overflow -fstack-protector-all
2644         add_ldflags  -Wl,-z,relro -Wl,-z,now
2645     ;;
2646     ?*)
2647         die "Unknown toolchain $toolchain"
2648     ;;
2649 esac
2650
2651 test -n "$cross_prefix" && enable cross_compile
2652
2653 if enabled cross_compile; then
2654     test -n "$arch" && test -n "$target_os" ||
2655         die "Must specify target arch and OS when cross-compiling"
2656 fi
2657
2658 ar_default="${cross_prefix}${ar_default}"
2659 cc_default="${cross_prefix}${cc_default}"
2660 nm_default="${cross_prefix}${nm_default}"
2661 pkg_config_default="${cross_prefix}${pkg_config_default}"
2662 ranlib="${cross_prefix}${ranlib}"
2663 strip="${cross_prefix}${strip}"
2664
2665 sysinclude_default="${sysroot}/usr/include"
2666
2667 set_default arch cc pkg_config sysinclude target_exec target_os
2668 enabled cross_compile || host_cc_default=$cc
2669 set_default host_cc
2670
2671 if ! $pkg_config --version >/dev/null 2>&1; then
2672     warn "$pkg_config not found, library detection may fail."
2673     pkg_config=false
2674 fi
2675
2676 exesuf() {
2677     case $1 in
2678         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2679     esac
2680 }
2681
2682 EXESUF=$(exesuf $target_os)
2683 HOSTEXESUF=$(exesuf $host_os)
2684
2685 # set temporary file name
2686 : ${TMPDIR:=$TEMPDIR}
2687 : ${TMPDIR:=$TMP}
2688 : ${TMPDIR:=/tmp}
2689
2690 if ! check_cmd mktemp -u XXXXXX; then
2691     # simple replacement for missing mktemp
2692     # NOT SAFE FOR GENERAL USE
2693     mktemp(){
2694         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2695     }
2696 fi
2697
2698 tmpfile(){
2699     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2700         (set -C; exec > $tmp) 2>/dev/null ||
2701         die "Unable to create temporary file in $TMPDIR."
2702     append TMPFILES $tmp
2703     eval $1=$tmp
2704 }
2705
2706 trap 'rm -f -- $TMPFILES' EXIT
2707
2708 tmpfile TMPASM .asm
2709 tmpfile TMPC   .c
2710 tmpfile TMPE   $EXESUF
2711 tmpfile TMPH   .h
2712 tmpfile TMPO   .o
2713 tmpfile TMPS   .S
2714 tmpfile TMPSH  .sh
2715 tmpfile TMPV   .ver
2716
2717 unset -f mktemp
2718
2719 chmod +x $TMPE
2720
2721 # make sure we can execute files in $TMPDIR
2722 cat > $TMPSH 2>> $logfile <<EOF
2723 #! /bin/sh
2724 EOF
2725 chmod +x $TMPSH >> $logfile 2>&1
2726 if ! $TMPSH >> $logfile 2>&1; then
2727     cat <<EOF
2728 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2729 variable to another directory and make sure that it is not mounted noexec.
2730 EOF
2731     die "Sanity test failed."
2732 fi
2733
2734 armasm_flags(){
2735     for flag; do
2736         case $flag in
2737             # Filter out MSVC cl.exe options from cflags that shouldn't
2738             # be passed to gas-preprocessor
2739             -M[TD]*)                                            ;;
2740             *)                  echo $flag                      ;;
2741         esac
2742    done
2743 }
2744
2745 ccc_flags(){
2746     for flag; do
2747         case $flag in
2748             -std=c99)           echo -c99                       ;;
2749             -mcpu=*)            echo -arch ${flag#*=}           ;;
2750             -mieee)             echo -ieee                      ;;
2751             -O*|-fast)          echo $flag                      ;;
2752             -fno-math-errno)    echo -assume nomath_errno       ;;
2753             -g)                 echo -g3                        ;;
2754             -Wall)              echo -msg_enable level2         ;;
2755             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2756             -Wl,*)              echo $flag                      ;;
2757             -f*|-W*)                                            ;;
2758             *)                  echo $flag                      ;;
2759         esac
2760    done
2761 }
2762
2763 cparser_flags(){
2764     for flag; do
2765         case $flag in
2766             -Wno-switch)             echo -Wno-switch-enum ;;
2767             -Wno-format-zero-length) ;;
2768             -Wdisabled-optimization) ;;
2769             -Wno-pointer-sign)       echo -Wno-other ;;
2770             *)                       echo $flag ;;
2771         esac
2772     done
2773 }
2774
2775 msvc_common_flags(){
2776     for flag; do
2777         case $flag in
2778             # In addition to specifying certain flags under the compiler
2779             # specific filters, they must be specified here as well or else the
2780             # generic catch all at the bottom will print the original flag.
2781             -Wall)                ;;
2782             -std=c99)             ;;
2783             # Common flags
2784             -fomit-frame-pointer) ;;
2785             -g)                   echo -Z7 ;;
2786             -fno-math-errno)      ;;
2787             -fno-common)          ;;
2788             -fno-signed-zeros)    ;;
2789             -fPIC)                ;;
2790             -mthumb)              ;;
2791             -march=*)             ;;
2792             -lz)                  echo zlib.lib ;;
2793             -lavifil32)           echo vfw32.lib ;;
2794             -lavicap32)           echo vfw32.lib user32.lib ;;
2795             -l*)                  echo ${flag#-l}.lib ;;
2796             -L*)                  echo -libpath:${flag#-L} ;;
2797             *)                    echo $flag ;;
2798         esac
2799     done
2800 }
2801
2802 msvc_flags(){
2803     msvc_common_flags "$@"
2804     for flag; do
2805         case $flag in
2806             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2807                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2808                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2809                                        -wd4273 -wd4554 -wd4701 ;;
2810         esac
2811     done
2812 }
2813
2814 icl_flags(){
2815     msvc_common_flags "$@"
2816     for flag; do
2817         case $flag in
2818             # Despite what Intel's documentation says -Wall, which is supported
2819             # on Windows, does enable remarks so disable them here.
2820             -Wall)                echo $flag -Qdiag-disable:remark ;;
2821             -std=c99)             echo -Qstd=c99 ;;
2822         esac
2823     done
2824 }
2825
2826 pgi_flags(){
2827     for flag; do
2828         case $flag in
2829             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2830             -fomit-frame-pointer) echo -Mnoframe ;;
2831             -g)                   echo -gopt ;;
2832             *)                    echo $flag ;;
2833         esac
2834     done
2835 }
2836
2837 suncc_flags(){
2838     for flag; do
2839         case $flag in
2840             -march=*|-mcpu=*)
2841                 case "${flag#*=}" in
2842                     native)                   echo -xtarget=native       ;;
2843                     v9|niagara)               echo -xarch=sparc          ;;
2844                     ultrasparc)               echo -xarch=sparcvis       ;;
2845                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2846                     i586|pentium)             echo -xchip=pentium        ;;
2847                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2848                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2849                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2850                     pentium4*)          echo -xtarget=pentium4           ;;
2851                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2852                     *-sse3)             echo -xarch=sse3                 ;;
2853                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2854                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2855                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2856                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2857                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2858                     k8|opteron|athlon64|athlon-fx)
2859                                                echo -xarch=sse2a         ;;
2860                     athlon*)                   echo -xarch=pentium_proa  ;;
2861                 esac
2862                 ;;
2863             -std=c99)             echo -xc99              ;;
2864             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2865             -fPIC)                echo -KPIC -xcode=pic32 ;;
2866             -W*,*)                echo $flag              ;;
2867             -f*-*|-W*|-mimpure-text)                      ;;
2868             -shared)              echo -G                 ;;
2869             *)                    echo $flag              ;;
2870         esac
2871     done
2872 }
2873
2874 tms470_flags(){
2875     for flag; do
2876         case $flag in
2877             -march=*|-mcpu=*)
2878                 case "${flag#*=}" in
2879                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2880                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2881                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2882                     armv6*|arm11*)          echo -mv=6   ;;
2883                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2884                                             echo -mv=5e  ;;
2885                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2886                 esac
2887                 ;;
2888             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2889             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2890             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2891             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2892             -msoft-float)   echo --float_support=vfplib       ;;
2893             -O[0-3]|-mf=*)  echo $flag                        ;;
2894             -g)             echo -g -mn                       ;;
2895             -pds=*)         echo $flag                        ;;
2896             -D*|-I*)        echo $flag                        ;;
2897             --gcc|--abi=*)  echo $flag                        ;;
2898             -me)            echo $flag                        ;;
2899         esac
2900     done
2901 }
2902
2903 probe_cc(){
2904     pfx=$1
2905     _cc=$2
2906
2907     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2908     unset _ld_o _ldflags _ld_lib _ld_path
2909     unset _depflags _DEPCMD _DEPFLAGS
2910     _flags_filter=echo
2911
2912     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2913         _type=llvm_gcc
2914         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2915         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2916         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2917         _cflags_speed='-O3'
2918         _cflags_size='-Os'
2919     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2920         _type=gcc
2921         gcc_version=$($_cc --version | head -n1)
2922         gcc_basever=$($_cc -dumpversion)
2923         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2924         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2925         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2926         if ! $_cc -dumpversion | grep -q '^2\.'; then
2927             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2928         fi
2929         _cflags_speed='-O3'
2930         _cflags_size='-Os'
2931     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2932         _type=icc
2933         _ident=$($_cc --version | head -n1)
2934         _depflags='-MMD'
2935         _cflags_speed='-O3'
2936         _cflags_size='-Os'
2937         _cflags_noopt='-O1'
2938     elif $_cc -v 2>&1 | grep -q xlc; then
2939         _type=xlc
2940         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2941         _cflags_speed='-O5'
2942         _cflags_size='-O5 -qcompact'
2943     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2944         _type=ccc
2945         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2946         _DEPFLAGS='-M'
2947         _cflags_speed='-fast'
2948         _cflags_size='-O1'
2949         _flags_filter=ccc_flags
2950     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2951         test -d "$sysroot" || die "No valid sysroot specified."
2952         _type=armcc
2953         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2954         armcc_conf="$PWD/armcc.conf"
2955         $_cc --arm_linux_configure                 \
2956              --arm_linux_config_file="$armcc_conf" \
2957              --configure_sysroot="$sysroot"        \
2958              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2959              die "Error creating armcc configuration file."
2960         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2961         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2962         as_default="${cross_prefix}gcc"
2963         _depflags='-MMD'
2964         _cflags_speed='-O3'
2965         _cflags_size='-Os'
2966     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2967         _type=tms470
2968         _ident=$($_cc -version | head -n1 | tr -s ' ')
2969         _flags='--gcc --abi=eabi -me'
2970         _cc_e='-ppl -fe=$@'
2971         _cc_o='-fe=$@'
2972         _depflags='-ppa -ppd=$(@:.o=.d)'
2973         _cflags_speed='-O3 -mf=5'
2974         _cflags_size='-O3 -mf=2'
2975         _flags_filter=tms470_flags
2976     elif $_cc -v 2>&1 | grep -q clang; then
2977         _type=clang
2978         _ident=$($_cc --version | head -n1)
2979         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2980         _cflags_speed='-O3'
2981         _cflags_size='-Os'
2982     elif $_cc -V 2>&1 | grep -q Sun; then
2983         _type=suncc
2984         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2985         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2986         _DEPFLAGS='-xM1 -xc99'
2987         _ldflags='-std=c99'
2988         _cflags_speed='-O5'
2989         _cflags_size='-O5 -xspace'
2990         _flags_filter=suncc_flags
2991     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2992         _type=pathscale
2993         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2994         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2995         _cflags_speed='-O2'
2996         _cflags_size='-Os'
2997         _flags_filter='filter_out -Wdisabled-optimization'
2998     elif $_cc -v 2>&1 | grep -q Open64; then
2999         _type=open64
3000         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3001         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3002         _cflags_speed='-O2'
3003         _cflags_size='-Os'
3004         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3005     elif $_cc -V 2>&1 | grep -q Portland; then
3006         _type=pgi
3007         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3008         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3009         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3010         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3011         _cflags_noopt="-O1"
3012         _flags_filter=pgi_flags
3013     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3014         _type=armasm
3015         _ident=$($_cc | head -n1)
3016         # 4509: "This form of conditional instruction is deprecated"
3017         _flags="-nologo -ignore 4509"
3018         _flags_filter=armasm_flags
3019     elif $_cc 2>&1 | grep -q Microsoft; then
3020         _type=msvc
3021         _ident=$($_cc 2>&1 | head -n1)
3022         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3023         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3024         _cflags_speed="-O2"
3025         _cflags_size="-O1"
3026         if $_cc 2>&1 | grep -q Linker; then
3027             _ld_o='-out:$@'
3028         else
3029             _ld_o='-Fe$@'
3030         fi
3031         _cc_o='-Fo$@'
3032         _cc_e='-P -Fi$@'
3033         _flags_filter=msvc_flags
3034         _ld_lib='lib%.a'
3035         _ld_path='-libpath:'
3036         _flags='-nologo'
3037         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3038     elif $_cc 2>&1 | grep -q Intel; then
3039         _type=icl
3040         _ident=$($_cc 2>&1 | head -n1)
3041         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3042         # Not only is O3 broken on 13.x+ but it is slower on all previous
3043         # versions (tested) as well.
3044         _cflags_speed="-O2"
3045         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3046         if $_cc 2>&1 | grep -q Linker; then
3047             _ld_o='-out:$@'
3048         else
3049             _ld_o='-Fe$@'
3050         fi
3051         _cc_o='-Fo$@'
3052         _cc_e='-P'
3053         _flags_filter=icl_flags
3054         _ld_lib='lib%.a'
3055         _ld_path='-libpath:'
3056         # -Qdiag-error to make icl error when seeing certain unknown arguments
3057         _flags='-nologo -Qdiag-error:4044,10157'
3058         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3059         # with MSVC which enables it by default.
3060         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3061     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3062         _type=cparser
3063         _ident=$($_cc --version | head -n1)
3064         _depflags='-MMD'
3065         _cflags_speed='-O4'
3066         _cflags_size='-O2'
3067         _flags_filter=cparser_flags
3068     fi
3069
3070     eval ${pfx}_type=\$_type
3071     eval ${pfx}_ident=\$_ident
3072 }
3073
3074 set_ccvars(){
3075     eval ${1}_C=\${_cc_c-\${${1}_C}}
3076     eval ${1}_E=\${_cc_e-\${${1}_E}}
3077     eval ${1}_O=\${_cc_o-\${${1}_O}}
3078
3079     if [ -n "$_depflags" ]; then
3080         eval ${1}_DEPFLAGS=\$_depflags
3081     else
3082         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3083         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3084         eval DEP${1}FLAGS=\$_flags
3085     fi
3086 }
3087
3088 probe_cc cc "$cc"
3089 cflags_filter=$_flags_filter
3090 cflags_speed=$_cflags_speed
3091 cflags_size=$_cflags_size
3092 cflags_noopt=$_cflags_noopt
3093 add_cflags $_flags $_cflags
3094 cc_ldflags=$_ldflags
3095 set_ccvars CC
3096
3097 probe_cc hostcc "$host_cc"
3098 host_cflags_filter=$_flags_filter
3099 add_host_cflags  $_flags $_cflags
3100 set_ccvars HOSTCC
3101
3102 test -n "$cc_type" && enable $cc_type ||
3103     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3104
3105 : ${as_default:=$cc}
3106 : ${dep_cc_default:=$cc}
3107 : ${ld_default:=$cc}
3108 : ${host_ld_default:=$host_cc}
3109 set_default ar as dep_cc ld host_ld
3110
3111 probe_cc as "$as"
3112 asflags_filter=$_flags_filter
3113 add_asflags $_flags $_cflags
3114 set_ccvars AS
3115
3116 probe_cc ld "$ld"
3117 ldflags_filter=$_flags_filter
3118 add_ldflags $_flags $_ldflags
3119 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3120 LD_O=${_ld_o-$LD_O}
3121 LD_LIB=${_ld_lib-$LD_LIB}
3122 LD_PATH=${_ld_path-$LD_PATH}
3123
3124 probe_cc hostld "$host_ld"
3125 host_ldflags_filter=$_flags_filter
3126 add_host_ldflags $_flags $_ldflags
3127 HOSTLD_O=${_ld_o-$HOSTLD_O}
3128
3129 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3130     probe_cc depcc "$dep_cc"
3131     CCDEP=${_DEPCMD:-$DEPCMD}
3132     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3133     DEPCCFLAGS=$_flags
3134 fi
3135
3136 if $ar 2>&1 | grep -q Microsoft; then
3137     arflags="-nologo"
3138     ar_o='-out:$@'
3139 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3140     arflags="rq"
3141     ar_o='$@'
3142 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3143     arflags='-Xany -r -c'
3144     ar_o='$@'
3145 else
3146     arflags="rc"
3147     ar_o='$@'
3148 fi
3149
3150 add_cflags $extra_cflags
3151 add_asflags $extra_cflags
3152
3153 if test -n "$sysroot"; then
3154     case "$cc_type" in
3155         gcc|llvm_gcc|clang)
3156             add_cppflags --sysroot="$sysroot"
3157             add_ldflags --sysroot="$sysroot"
3158         ;;
3159         tms470)
3160             add_cppflags -I"$sysinclude"
3161             add_ldflags  --sysroot="$sysroot"
3162         ;;
3163     esac
3164 fi
3165
3166 if test "$cpu" = host; then
3167     enabled cross_compile &&
3168         die "--cpu=host makes no sense when cross-compiling."
3169
3170     case "$cc_type" in
3171         gcc|llvm_gcc)
3172             check_native(){
3173                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3174                 sed -n "/cc1.*$1=/{
3175                             s/.*$1=\\([^ ]*\\).*/\\1/
3176                             p
3177                             q
3178                         }" $TMPE
3179             }
3180             cpu=$(check_native -march || check_native -mcpu)
3181         ;;
3182     esac
3183
3184     test "${cpu:-host}" = host &&
3185         die "--cpu=host not supported with compiler $cc"
3186 fi
3187
3188 # Deal with common $arch aliases
3189 case "$arch" in
3190     aarch64|arm64)
3191         arch="aarch64"
3192     ;;
3193     arm*)
3194         arch="arm"
3195     ;;
3196     mips*|IP*)
3197         arch="mips"
3198     ;;
3199     parisc*|hppa*)
3200         arch="parisc"
3201     ;;
3202     "Power Macintosh"|ppc*|powerpc*)
3203         arch="ppc"
3204     ;;
3205     s390|s390x)
3206         arch="s390"
3207     ;;
3208     sh4|sh)
3209         arch="sh4"
3210     ;;
3211     sun4u|sparc*)
3212         arch="sparc"
3213     ;;
3214     tilegx|tile-gx)
3215         arch="tilegx"
3216     ;;
3217     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3218         arch="x86"
3219     ;;
3220 esac
3221
3222 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3223 enable $arch
3224
3225 # Add processor-specific flags
3226 if enabled aarch64; then
3227
3228     case $cpu in
3229         armv*)
3230             cpuflags="-march=$cpu"
3231         ;;
3232         *)
3233             cpuflags="-mcpu=$cpu"
3234         ;;
3235     esac
3236
3237 elif enabled alpha; then
3238
3239     cpuflags="-mcpu=$cpu"
3240
3241 elif enabled arm; then
3242
3243     check_arm_arch() {
3244         check_cpp_condition stddef.h \
3245             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3246             $cpuflags
3247     }
3248
3249     probe_arm_arch() {
3250         if   check_arm_arch 4;        then echo armv4;
3251         elif check_arm_arch 4T;       then echo armv4t;
3252         elif check_arm_arch 5;        then echo armv5;
3253         elif check_arm_arch 5E;       then echo armv5e;
3254         elif check_arm_arch 5T;       then echo armv5t;
3255         elif check_arm_arch 5TE;      then echo armv5te;
3256         elif check_arm_arch 5TEJ;     then echo armv5te;
3257         elif check_arm_arch 6;        then echo armv6;
3258         elif check_arm_arch 6J;       then echo armv6j;
3259         elif check_arm_arch 6K;       then echo armv6k;
3260         elif check_arm_arch 6Z;       then echo armv6z;
3261         elif check_arm_arch 6ZK;      then echo armv6zk;
3262         elif check_arm_arch 6T2;      then echo armv6t2;
3263         elif check_arm_arch 7;        then echo armv7;
3264         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3265         elif check_arm_arch 7S;       then echo armv7-a;
3266         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3267         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3268         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3269         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3270         fi
3271     }
3272
3273     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3274
3275     case $cpu in
3276         armv*)
3277             cpuflags="-march=$cpu"
3278             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3279         ;;
3280         *)
3281             cpuflags="-mcpu=$cpu"
3282             case $cpu in
3283                 cortex-a*)                               subarch=armv7a  ;;
3284                 cortex-r*)                               subarch=armv7r  ;;
3285                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3286                 arm11*)                                  subarch=armv6   ;;
3287                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3288                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3289                 *)                             subarch=$(probe_arm_arch) ;;
3290             esac
3291         ;;
3292     esac
3293
3294     case "$subarch" in
3295         armv5t*)    enable fast_clz                ;;
3296         armv[6-8]*) enable fast_clz fast_unaligned ;;
3297     esac
3298
3299 elif enabled avr32; then
3300
3301     case $cpu in
3302         ap7[02]0[0-2])
3303             subarch="avr32_ap"
3304             cpuflags="-mpart=$cpu"
3305         ;;
3306         ap)
3307             subarch="avr32_ap"
3308             cpuflags="-march=$cpu"
3309         ;;
3310         uc3[ab]*)
3311             subarch="avr32_uc"
3312             cpuflags="-mcpu=$cpu"
3313         ;;
3314         uc)
3315             subarch="avr32_uc"
3316             cpuflags="-march=$cpu"
3317         ;;
3318     esac
3319
3320 elif enabled bfin; then
3321
3322     cpuflags="-mcpu=$cpu"
3323
3324 elif enabled mips; then
3325
3326     cpuflags="-march=$cpu"
3327
3328 elif enabled ppc; then
3329
3330     disable ldbrx
3331
3332     case $(tolower $cpu) in
3333         601|ppc601|powerpc601)
3334             cpuflags="-mcpu=601"
3335             disable altivec
3336         ;;
3337         603*|ppc603*|powerpc603*)
3338             cpuflags="-mcpu=603"
3339             disable altivec
3340         ;;
3341         604*|ppc604*|powerpc604*)
3342             cpuflags="-mcpu=604"
3343             disable altivec
3344         ;;
3345         g3|75*|ppc75*|powerpc75*)
3346             cpuflags="-mcpu=750"
3347             disable altivec
3348         ;;
3349         g4|745*|ppc745*|powerpc745*)
3350             cpuflags="-mcpu=7450"
3351             disable vsx
3352         ;;
3353         74*|ppc74*|powerpc74*)
3354             cpuflags="-mcpu=7400"
3355             disable vsx
3356         ;;
3357         g5|970|ppc970|powerpc970)
3358             cpuflags="-mcpu=970"
3359             disable vsx
3360         ;;
3361         power[3-6]*)
3362             cpuflags="-mcpu=$cpu"
3363             disable vsx
3364         ;;
3365         power[7-8]*)
3366             cpuflags="-mcpu=$cpu"
3367             enable ldbrx
3368         ;;
3369         cell)
3370             cpuflags="-mcpu=cell"
3371             enable ldbrx
3372             disable vsx
3373         ;;
3374         e500mc)
3375             cpuflags="-mcpu=e500mc"
3376             disable altivec
3377         ;;
3378         e500v2)
3379             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3380             disable altivec
3381             disable dcbzl
3382         ;;
3383         e500)
3384             cpuflags="-mcpu=8540 -mhard-float"
3385             disable altivec
3386             disable dcbzl
3387         ;;
3388     esac
3389
3390 elif enabled sparc; then
3391
3392     case $cpu in
3393         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3394             cpuflags="-mcpu=$cpu"
3395         ;;
3396         ultrasparc*|niagara[234])
3397             cpuflags="-mcpu=$cpu"
3398         ;;
3399     esac
3400
3401 elif enabled x86; then
3402
3403     case $cpu in
3404         i[345]86|pentium)
3405             cpuflags="-march=$cpu"
3406             disable i686
3407             disable mmx
3408         ;;
3409         # targets that do NOT support nopl and conditional mov (cmov)
3410         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3411             cpuflags="-march=$cpu"
3412             disable i686
3413         ;;
3414         # targets that do support nopl and conditional mov (cmov)
3415         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3416             cpuflags="-march=$cpu"
3417             enable i686
3418             enable fast_cmov
3419         ;;
3420         # targets that do support conditional mov but on which it's slow
3421         pentium4|pentium4m|prescott|nocona)
3422             cpuflags="-march=$cpu"
3423             enable i686
3424             disable fast_cmov
3425         ;;
3426     esac
3427
3428 fi
3429
3430 if [ "$cpu" != generic ]; then
3431     add_cflags  $cpuflags
3432     add_asflags $cpuflags
3433 fi
3434
3435 # compiler sanity check
3436 check_exec <<EOF
3437 int main(void){ return 0; }
3438 EOF
3439 if test "$?" != 0; then
3440     echo "$cc is unable to create an executable file."
3441     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3442         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3443         echo "Only do this if you know what cross compiling means."
3444     fi
3445     die "C compiler test failed."
3446 fi
3447
3448 add_cppflags -D_ISOC99_SOURCE
3449 check_cflags -std=c99
3450 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3451 #include <stdlib.h>
3452 EOF
3453 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3454 #include <stdlib.h>
3455 EOF
3456
3457 add_host_cppflags -D_ISOC99_SOURCE
3458 check_host_cflags -std=c99
3459 check_host_cflags -Wall
3460 check_host_cflags -O3
3461
3462 check_64bit(){
3463     arch32=$1
3464     arch64=$2
3465     expr=$3
3466     check_code cc "" "int test[2*($expr) - 1]" &&
3467         subarch=$arch64 || subarch=$arch32
3468 }
3469
3470 case "$arch" in
3471     aarch64|alpha|ia64)
3472         spic=$shared
3473     ;;
3474     mips)
3475         check_64bit mips mips64 '_MIPS_SIM > 1'
3476         spic=$shared
3477     ;;
3478     parisc)
3479         check_64bit parisc parisc64 'sizeof(void *) > 4'
3480         spic=$shared
3481     ;;
3482     ppc)
3483         check_64bit ppc ppc64 'sizeof(void *) > 4'
3484         spic=$shared
3485     ;;
3486     s390)
3487         check_64bit s390 s390x 'sizeof(void *) > 4'
3488         spic=$shared
3489     ;;
3490     sparc)
3491         check_64bit sparc sparc64 'sizeof(void *) > 4'
3492         spic=$shared
3493     ;;
3494     x86)
3495         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3496         if test "$subarch" = "x86_64"; then
3497             spic=$shared
3498         fi
3499     ;;
3500 esac
3501
3502 enable $subarch
3503 enabled spic && enable_weak pic
3504
3505 # OS specific
3506 case $target_os in
3507     aix)
3508         SHFLAGS=-shared
3509         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3510         enabled shared && add_ldflags -Wl,-brtl
3511         ;;
3512     android)
3513         disable symver
3514         enable section_data_rel_ro
3515         SLIB_INSTALL_NAME='$(SLIBNAME)'
3516         SLIB_INSTALL_LINKS=
3517         # soname not set on purpose
3518         SHFLAGS=-shared
3519         ;;
3520     haiku)
3521         prefix_default="/boot/common"
3522         network_extralibs="-lnetwork"
3523         host_libs=
3524         ;;
3525     sunos)
3526         SHFLAGS='-shared -Wl,-h,$$(@F)'
3527         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3528         network_extralibs="-lsocket -lnsl"
3529         # When using suncc to build, the Solaris linker will mark
3530         # an executable with each instruction set encountered by
3531         # the Solaris assembler.  As our libraries contain their own
3532         # guards for processor-specific code, instead suppress
3533         # generation of the HWCAPS ELF section on Solaris x86 only.
3534         enabled_all suncc x86 &&
3535             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3536             add_ldflags -Wl,-M,mapfile
3537         nm_default='nm -P -g'
3538         ;;
3539     netbsd)
3540         disable symver
3541         oss_indev_extralibs="-lossaudio"
3542         oss_outdev_extralibs="-lossaudio"
3543         ;;
3544     openbsd|bitrig)
3545         disable symver
3546         SHFLAGS='-shared'
3547         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3548         SLIB_INSTALL_LINKS=
3549         oss_indev_extralibs="-lossaudio"
3550         oss_outdev_extralibs="-lossaudio"
3551         ;;
3552     dragonfly)
3553         disable symver
3554         ;;
3555     freebsd)
3556         ;;
3557     bsd/os)
3558         add_extralibs -lpoll -lgnugetopt
3559         ;;
3560     darwin)
3561         enabled ppc && add_asflags -force_cpusubtype_ALL
3562         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3563         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3564         add_ldflags -Wl,-dynamic,-search_paths_first
3565         SLIBSUF=".dylib"
3566         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3567         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3568         objformat="macho"
3569         enabled x86_64 && objformat="macho64"
3570         enabled_any pic shared ||
3571             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3572         ;;
3573     mingw32*)
3574         if test $target_os = "mingw32ce"; then
3575             disable network
3576         else
3577             target_os=mingw32
3578         fi
3579         LIBTARGET=i386
3580         if enabled x86_64; then
3581             LIBTARGET="i386:x86-64"
3582         elif enabled arm; then
3583             LIBTARGET=arm-wince
3584         fi
3585         check_ldflags -Wl,--nxcompat
3586         check_ldflags -Wl,--dynamicbase
3587         shlibdir_default="$bindir_default"
3588         SLIBPREF=""
3589         SLIBSUF=".dll"
3590         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3591         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3592         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3593         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3594         SLIB_INSTALL_LINKS=
3595         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3596         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3597         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3598         objformat="win32"
3599         dlltool="${cross_prefix}dlltool"
3600         ranlib=:
3601         enable dos_paths
3602         ;;
3603     win32|win64)
3604         disable symver
3605         if enabled shared; then
3606             # Link to the import library instead of the normal static library
3607             # for shared libs.
3608             LD_LIB='%.lib'
3609             # Cannot build both shared and static libs with MSVC or icl.
3610             disable static
3611         fi
3612         shlibdir_default="$bindir_default"
3613         SLIBPREF=""
3614         SLIBSUF=".dll"
3615         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3616         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3617         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3618         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3619         SLIB_INSTALL_LINKS=
3620         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3621         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3622         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3623         objformat="win32"
3624         ranlib=:
3625         enable dos_paths
3626         ;;
3627     cygwin*)
3628         target_os=cygwin
3629         shlibdir_default="$bindir_default"
3630         SLIBPREF="cyg"
3631         SLIBSUF=".dll"
3632         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3633         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3634         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3635         SLIB_INSTALL_LINKS=
3636         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3637         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3638         objformat="win32"
3639         enable dos_paths
3640         ;;
3641     *-dos|freedos|opendos)
3642         network_extralibs="-lsocket"
3643         objformat="coff"
3644         enable dos_paths
3645         add_cppflags -U__STRICT_ANSI__
3646         ;;
3647     linux)
3648         enable dv1394
3649         enable section_data_rel_ro
3650         ;;
3651     irix*)
3652         target_os=irix
3653         ranlib="echo ignoring ranlib"
3654         ;;
3655     os/2*)
3656         ln_s="cp -f"
3657         objformat="aout"
3658         add_cppflags -D_GNU_SOURCE
3659         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3660         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3661         LIBSUF="_s.a"
3662         SLIBPREF=""
3663         SLIBSUF=".dll"
3664         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3665         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3666         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3667             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3668             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3669             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3670             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3671             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3672         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3673             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3674         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3675         enable dos_paths
3676         ;;
3677     gnu/kfreebsd)
3678         add_cppflags -D_BSD_SOURCE
3679         ;;
3680     gnu)
3681         ;;
3682     qnx)
3683         add_cppflags -D_QNX_SOURCE
3684         network_extralibs="-lsocket"
3685         ;;
3686     symbian)
3687         SLIBSUF=".dll"
3688         enable dos_paths
3689         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3690         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3691         add_ldflags -Wl,--target1-abs,--no-undefined \
3692                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3693                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3694         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3695                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3696                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3697         ;;
3698     osf1)
3699         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3700         ;;
3701     minix)
3702         ;;
3703     plan9)
3704         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3705                      -D_REENTRANT_SOURCE        \
3706                      -D_RESEARCH_SOURCE         \
3707                      -DFD_SETSIZE=96            \
3708                      -DHAVE_SOCK_OPTS
3709         add_compat strtod.o strtod=avpriv_strtod
3710         network_extralibs='-lbsd'
3711         exeobjs=compat/plan9/main.o
3712         cp_f='cp'
3713         ;;
3714     none)
3715         ;;
3716     *)
3717         die "Unknown OS '$target_os'."
3718         ;;
3719 esac
3720
3721 # determine libc flavour
3722
3723 probe_libc(){
3724     pfx=$1
3725     pfx_no_=${pfx%_}
3726     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3727     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3728         eval ${pfx}libc_type=uclibc
3729         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3730     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3731         eval ${pfx}libc_type=glibc
3732         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3733     # MinGW headers can be installed on Cygwin, so check for newlib first.
3734     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3735         eval ${pfx}libc_type=newlib
3736         add_${pfx}cppflags -U__STRICT_ANSI__
3737     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3738     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3739         eval ${pfx}libc_type=mingw64
3740         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3741         eval test \$${pfx_no_}cc_type = "gcc" &&
3742             add_${pfx}cppflags -D__printf__=__gnu_printf__
3743     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3744          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3745         eval ${pfx}libc_type=mingw32
3746         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3747             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3748             die "ERROR: MinGW32 runtime version must be >= 3.15."
3749         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3750         eval test \$${pfx_no_}cc_type = "gcc" &&
3751             add_${pfx}cppflags -D__printf__=__gnu_printf__
3752     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3753         eval ${pfx}libc_type=msvcrt
3754         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3755             if [ "$pfx" = host_ ]; then
3756                 add_host_cppflags -Dsnprintf=_snprintf
3757             else
3758                 add_compat strtod.o strtod=avpriv_strtod
3759                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3760                                              _snprintf=avpriv_snprintf  \
3761                                              vsnprintf=avpriv_vsnprintf
3762             fi
3763         fi
3764         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3765         # 0x601 by default unless something else is set by the user.
3766         # This can easily lead to us detecting functions only present
3767         # in such new versions and producing binaries requiring windows 7.0.
3768         # Therefore explicitly set the default to XP unless the user has
3769         # set something else on the command line.
3770         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3771             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3772     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3773         eval ${pfx}libc_type=klibc
3774     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3775         eval ${pfx}libc_type=bionic
3776     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3777         eval ${pfx}libc_type=solaris
3778         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3779     else
3780         eval ${pfx}libc_type=default
3781         add_${pfx}cppflags -D_DEFAULT_SOURCE
3782     fi
3783 }
3784
3785 probe_libc
3786 test -n "$libc_type" && enable libc_$libc_type
3787 probe_libc host_
3788 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3789
3790 case $libc_type in
3791     bionic)
3792         add_compat strtod.o strtod=avpriv_strtod
3793         ;;
3794 esac
3795
3796 # hacks for compiler/libc/os combinations
3797
3798 if enabled_all tms470 libc_glibc; then
3799     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3800     add_cppflags -D__USER_LABEL_PREFIX__=
3801     add_cppflags -D__builtin_memset=memset
3802     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3803     add_cflags   -pds=48    # incompatible redefinition of macro
3804 fi
3805
3806 if enabled_all ccc libc_glibc; then
3807     add_ldflags -Wl,-z,now  # calls to libots crash without this
3808 fi
3809
3810 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3811     add_cppflags '-I\$(SRC_PATH)/compat/float'
3812
3813 esc(){
3814     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3815 }
3816
3817 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3818
3819 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3820
3821 set_default $PATHS_LIST
3822 set_default nm
3823
3824 # we need to build at least one lib type
3825 if ! enabled_any static shared; then
3826     cat <<EOF
3827 At least one library type must be built.
3828 Specify --enable-static to build the static libraries or --enable-shared to
3829 build the shared libraries as well. To only build the shared libraries specify
3830 --disable-static in addition to --enable-shared.
3831 EOF
3832     exit 1;
3833 fi
3834
3835 die_license_disabled() {
3836     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3837 }
3838
3839 die_license_disabled gpl libcdio
3840 die_license_disabled gpl libx264
3841 die_license_disabled gpl libx265
3842 die_license_disabled gpl libxavs
3843 die_license_disabled gpl libxvid
3844 die_license_disabled gpl x11grab
3845
3846 die_license_disabled nonfree libfaac
3847 die_license_disabled nonfree libfdk_aac
3848 die_license_disabled nonfree nvenc
3849 die_license_disabled nonfree openssl
3850
3851 die_license_disabled version3 libopencore_amrnb
3852 die_license_disabled version3 libopencore_amrwb
3853 die_license_disabled version3 libvo_aacenc
3854 die_license_disabled version3 libvo_amrwbenc
3855
3856 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3857
3858 disabled optimizations || check_cflags -fomit-frame-pointer
3859
3860 enable_weak_pic() {
3861     disabled pic && return
3862     enable pic
3863     add_cppflags -DPIC
3864     case "$target_os" in
3865     mingw*|cygwin*)
3866         ;;
3867     *)
3868         add_cflags -fPIC
3869         ;;
3870     esac
3871     add_asflags  -fPIC
3872 }
3873
3874 enabled pic && enable_weak_pic
3875
3876 check_cc <<EOF || die "Symbol mangling check failed."
3877 int ff_extern;
3878 EOF
3879 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3880 extern_prefix=${sym%%ff_extern*}
3881
3882 check_cc <<EOF && enable_weak inline_asm
3883 void foo(void) { __asm__ volatile ("" ::); }
3884 EOF
3885
3886 _restrict=
3887 for restrict_keyword in restrict __restrict__ __restrict; do
3888     check_cc <<EOF && _restrict=$restrict_keyword && break
3889 void foo(char * $restrict_keyword p);
3890 EOF
3891 done
3892
3893 check_cc <<EOF && enable pragma_deprecated
3894 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3895 EOF
3896
3897 check_cc <<EOF && enable attribute_packed
3898 struct { int x; } __attribute__((packed)) x;
3899 EOF
3900
3901 check_cc <<EOF && enable attribute_may_alias
3902 union { int x; } __attribute__((may_alias)) x;
3903 EOF
3904
3905 check_cc <<EOF || die "endian test failed"
3906 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3907 EOF
3908 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3909
3910 check_gas() {
3911     log "check_gas using '$as' as AS"
3912     # :vararg is used on aarch64, arm and ppc altivec
3913     check_as <<EOF || return 1
3914 .macro m n, y:vararg=0
3915 \n: .int \y
3916 .endm
3917 m x
3918 EOF
3919     # .altmacro is only used in arm asm
3920     ! enabled arm || check_as <<EOF || return 1
3921 .altmacro
3922 EOF
3923     enable gnu_as
3924     return 0
3925 }
3926
3927 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3928     nogas=:
3929     enabled_any arm aarch64 && nogas=die
3930     enabled_all ppc altivec && nogas=warn
3931     as_noop=-v
3932
3933     case $as_type in
3934         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3935         gcc)  gaspp_as_type=gas ;;
3936         *)    gaspp_as_type=$as_type ;;
3937     esac
3938
3939     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3940
3941     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3942         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3943
3944     if ! check_gas ; then
3945         as=${gas:=$as}
3946         check_gas || \
3947             $nogas "GNU assembler not found, install/update gas-preprocessor"
3948     fi
3949
3950     check_as <<EOF && enable as_func
3951 .func test
3952 .endfunc
3953 EOF
3954 fi
3955
3956 check_inline_asm inline_asm_labels '"1:\n"'
3957
3958 if enabled aarch64; then
3959     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3960     # internal assembler in clang 3.3 does not support this instruction
3961     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3962     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3963
3964     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3965
3966 elif enabled alpha; then
3967
3968     check_cflags -mieee
3969
3970 elif enabled arm; then
3971
3972     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3973     enabled thumb && check_cflags -mthumb || check_cflags -marm
3974
3975     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3976         enable vfp_args
3977     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3978         case "${cross_prefix:-$cc}" in
3979             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3980             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3981 __asm__ (".eabi_attribute 28, 1");
3982 int main(void) { return 0; }
3983 EOF
3984         esac
3985         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3986     fi
3987
3988     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3989     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3990     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3991     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3992     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3993     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3994
3995     [ $target_os = linux ] || [ $target_os = android ] ||
3996         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3997             $ARCH_EXT_LIST_ARM
3998
3999     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4000
4001     check_as <<EOF && enable as_dn_directive
4002 ra .dn d0.i16
4003 .unreq ra
4004 EOF
4005
4006     # llvm's integrated assembler supports .object_arch from llvm 3.5
4007     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4008 .object_arch armv4
4009 EOF
4010
4011     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4012
4013 elif enabled mips; then
4014
4015     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4016
4017 elif enabled parisc; then
4018
4019     if enabled gcc; then
4020         case $($cc -dumpversion) in
4021             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4022         esac
4023     fi
4024
4025 elif enabled ppc; then
4026
4027     enable local_aligned_8 local_aligned_16
4028
4029     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4030     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4031     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4032     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4033
4034     # AltiVec flags: The FSF version of GCC differs from the Apple version
4035     if enabled altivec; then
4036         check_cflags -maltivec -mabi=altivec &&
4037         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4038         check_cflags -faltivec
4039
4040         # check if our compiler supports Motorola AltiVec C API
4041         check_cc <<EOF || disable altivec
4042 $inc_altivec_h
4043 int main(void) {
4044     vector signed int v1 = (vector signed int) { 0 };
4045     vector signed int v2 = (vector signed int) { 1 };
4046     v1 = vec_add(v1, v2);
4047     return 0;
4048 }
4049 EOF
4050
4051         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4052     fi
4053
4054     if enabled vsx; then
4055         check_cflags -mvsx &&
4056         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4057     fi
4058
4059     if enabled power8; then
4060         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4061     fi
4062
4063 elif enabled x86; then
4064
4065     check_builtin rdtsc    intrin.h   "__rdtsc()"
4066     check_builtin mm_empty mmintrin.h "_mm_empty()"
4067
4068     enable local_aligned_8 local_aligned_16
4069
4070     # check whether EBP is available on x86
4071     # As 'i' is stored on the stack, this program will crash
4072     # if the base pointer is used to access it because the
4073     # base pointer is cleared in the inline assembly code.
4074     check_exec_crash <<EOF && enable ebp_available
4075 volatile int i=0;
4076 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4077 return i;
4078 EOF
4079
4080     # check whether EBX is available on x86
4081     check_inline_asm ebx_available '""::"b"(0)' &&
4082         check_inline_asm ebx_available '"":::"%ebx"'
4083
4084     # check whether xmm clobbers are supported
4085     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4086
4087     # check whether binutils is new enough to compile SSSE3/MMXEXT
4088     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4089     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4090
4091     if ! disabled_any asm mmx yasm; then
4092         if check_cmd $yasmexe --version; then
4093             enabled x86_64 && yasm_extra="-m amd64"
4094             yasm_debug="-g dwarf2"
4095         elif check_cmd nasm -v; then
4096             yasmexe=nasm
4097             yasm_debug="-g -F dwarf"
4098             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4099         fi
4100
4101         YASMFLAGS="-f $objformat $yasm_extra"
4102         enabled pic               && append YASMFLAGS "-DPIC"
4103         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4104         case "$objformat" in
4105             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4106         esac
4107
4108         check_yasm "movbe ecx, [5]" && enable yasm ||
4109             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4110         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4111         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4112         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4113         check_yasm "CPU amdnop" || disable cpunop
4114     fi
4115
4116     case "$cpu" in
4117         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4118             disable fast_clz
4119         ;;
4120     esac
4121
4122 fi
4123
4124 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4125
4126 check_ldflags -Wl,--as-needed
4127
4128 if check_func dlopen; then
4129     ldl=
4130 elif check_func dlopen -ldl; then
4131     ldl=-ldl
4132 fi
4133
4134 if ! disabled network; then
4135     check_func getaddrinfo $network_extralibs
4136     check_func getservbyport $network_extralibs
4137     check_func inet_aton $network_extralibs
4138
4139     check_type netdb.h "struct addrinfo"
4140     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4141     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4142     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4143     check_type poll.h "struct pollfd"
4144     check_type netinet/sctp.h "struct sctp_event_subscribe"
4145     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4146     check_type netinet/in.h "struct sockaddr_in6"
4147     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4148     check_type "sys/types.h sys/socket.h" socklen_t
4149
4150     # Prefer arpa/inet.h over winsock2
4151     if check_header arpa/inet.h ; then
4152         check_func closesocket
4153     elif check_header winsock2.h ; then
4154         check_func_headers winsock2.h closesocket -lws2 &&
4155             network_extralibs="-lws2" ||
4156         { check_func_headers winsock2.h closesocket -lws2_32 &&
4157             network_extralibs="-lws2_32"; } || disable winsock2_h network
4158         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4159
4160         check_type ws2tcpip.h socklen_t
4161         check_type ws2tcpip.h "struct addrinfo"
4162         check_type ws2tcpip.h "struct group_source_req"
4163         check_type ws2tcpip.h "struct ip_mreq_source"
4164         check_type ws2tcpip.h "struct ipv6_mreq"
4165         check_type winsock2.h "struct pollfd"
4166         check_struct winsock2.h "struct sockaddr" sa_len
4167         check_type ws2tcpip.h "struct sockaddr_in6"
4168         check_type ws2tcpip.h "struct sockaddr_storage"
4169     else
4170         disable network
4171     fi
4172 fi
4173
4174 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4175 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4176 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4177 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4178
4179 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4180 check_func  ${malloc_prefix}memalign            && enable memalign
4181 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4182
4183 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4184     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4185
4186 check_func  fcntl
4187 check_func  fork
4188 check_func  gethrtime
4189 check_func  getopt
4190 check_func  getrusage
4191 check_func  gettimeofday
4192 check_func  gmtime_r
4193 check_func  isatty
4194 check_func  localtime_r
4195 check_func  mach_absolute_time
4196 check_func  mkstemp
4197 check_func  mmap
4198 check_func  mprotect
4199 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4200 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4201 check_func  sched_getaffinity
4202 check_func  setrlimit
4203 check_func  strerror_r
4204 check_func  sysconf
4205 check_func  sysctl
4206 check_func  usleep
4207
4208 check_func_headers io.h setmode
4209 check_func_headers stdlib.h getenv
4210
4211 check_func_headers windows.h CoTaskMemFree -lole32
4212 check_func_headers windows.h GetProcessAffinityMask
4213 check_func_headers windows.h GetProcessTimes
4214 check_func_headers windows.h GetSystemTimeAsFileTime
4215 check_func_headers windows.h LoadLibrary
4216 check_func_headers windows.h MapViewOfFile
4217 check_func_headers windows.h SetConsoleTextAttribute
4218 check_func_headers windows.h Sleep
4219 check_func_headers windows.h VirtualAlloc
4220 check_struct windows.h "CONDITION_VARIABLE" Ptr
4221
4222 check_header direct.h
4223 check_header dlfcn.h
4224 check_header d3d11.h
4225 check_header dxva.h
4226 check_header dxva2api.h
4227 check_header io.h
4228 check_header mach/mach_time.h
4229 check_header malloc.h
4230 check_header poll.h
4231 check_header sys/mman.h
4232 check_header sys/param.h
4233 check_header sys/resource.h
4234 check_header sys/select.h
4235 check_header sys/time.h
4236 check_header sys/un.h
4237 check_header unistd.h
4238 check_header valgrind/valgrind.h
4239 check_header vdpau/vdpau.h
4240 check_header vdpau/vdpau_x11.h
4241 check_header VideoDecodeAcceleration/VDADecoder.h
4242 check_header windows.h
4243 check_header X11/extensions/XvMClib.h
4244
4245 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4246 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4247 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4248
4249 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4250
4251 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4252 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4253 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0600
4254
4255 if ! disabled w32threads && ! enabled pthreads; then
4256     check_func_headers "windows.h process.h" _beginthreadex &&
4257         enable w32threads || disable w32threads
4258 fi
4259
4260 # check for some common methods of building with pthread support
4261 # do this before the optional library checks as some of them require pthreads
4262 if ! disabled pthreads && ! enabled w32threads; then
4263     enable pthreads
4264     if check_func pthread_join -pthread; then
4265         add_cflags -pthread
4266         add_extralibs -pthread
4267     elif check_func pthread_join -pthreads; then
4268         add_cflags -pthreads
4269         add_extralibs -pthreads
4270     elif check_func pthread_join -lpthreadGC2; then
4271         add_extralibs -lpthreadGC2
4272     elif check_lib pthread.h pthread_join -lpthread; then
4273         :
4274     elif ! check_func pthread_join; then
4275         disable pthreads
4276     fi
4277 fi
4278
4279 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4280 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4281
4282 check_lib math.h sin -lm && LIBM="-lm"
4283 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4284
4285 atan2f_args=2
4286 ldexpf_args=2
4287 powf_args=2
4288
4289 for func in $MATH_FUNCS; do
4290     eval check_mathfunc $func \${${func}_args:-1}
4291 done
4292
4293 # these are off by default, so fail if requested and not available
4294 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4295                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4296                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4297 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4298 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4299 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4300 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4301 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4302 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4303 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4304 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4305 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4306                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4307                                done || die "ERROR: libgsm not found"; }
4308 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4309 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4310 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4311 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4312 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4313 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4314 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4315 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4316                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4317 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4318 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4319 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4320 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4321 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4322 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4323 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4324 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4325 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4326 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4327 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4328 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4329     enabled libvpx_vp8_decoder && {
4330         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4331             disable libvpx_vp8_decoder;
4332     }
4333     enabled libvpx_vp8_encoder && {
4334         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4335             disable libvpx_vp8_encoder;
4336     }
4337     enabled libvpx_vp9_decoder && {
4338         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4339             disable libvpx_vp9_decoder;
4340     }
4341     enabled libvpx_vp9_encoder && {
4342         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4343             disable libvpx_vp9_encoder;
4344     }
4345     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4346         die "libvpx enabled but no supported decoders found"
4347     fi
4348 }
4349 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4350 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4351 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4352                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4353                                die "ERROR: libx264 version must be >= 0.118."; }
4354 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4355                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4356                                die "ERROR: libx265 version must be >= 57."; }
4357 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4358 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4359 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4360                                 { ! enabled cross_compile && {
4361                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4362                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4363                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4364                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4365                                die "ERROR: mmal not found"; }
4366 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4367                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4368                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4369                                die "ERROR: openssl not found"; }
4370
4371 if enabled gnutls; then
4372     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4373     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4374 fi
4375
4376 # libdc1394 check
4377 if enabled libdc1394; then
4378     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4379         enable libdc1394_2; } ||
4380     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4381         enable libdc1394_1; } ||
4382     die "ERROR: No version of libdc1394 found "
4383 fi
4384
4385 if enabled nvenc; then
4386     check_header cuda.h || die "ERROR: cuda.h not found.";
4387     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found.";
4388     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
4389         die "ERROR: NVENC API version 4 or older is not supported";
4390 fi
4391
4392 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4393     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4394     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4395     enable sdl
4396 fi
4397
4398 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4399 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4400
4401 check_header linux/fb.h
4402 check_header linux/videodev2.h
4403 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4404
4405 check_header sys/videoio.h
4406
4407 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4408 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4409 # w32api 3.12 had it defined wrong
4410 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4411
4412 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4413 { check_header dev/bktr/ioctl_meteor.h &&
4414   check_header dev/bktr/ioctl_bt848.h; } ||
4415 { check_header machine/ioctl_meteor.h &&
4416   check_header machine/ioctl_bt848.h; } ||
4417 { check_header dev/video/meteor/ioctl_meteor.h &&
4418   check_header dev/video/bktr/ioctl_bt848.h; } ||
4419 check_header dev/ic/bt8xx.h
4420
4421 check_header sndio.h
4422 check_header sys/soundcard.h
4423 check_header soundcard.h
4424
4425 enabled_any alsa_indev alsa_outdev &&
4426     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4427
4428 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4429     check_func jack_port_get_latency_range -ljack
4430
4431 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4432
4433 if enabled libcdio; then
4434     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4435     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4436     die "ERROR: No usable libcdio/cdparanoia found"
4437 fi
4438
4439 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4440
4441 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
4442     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4443         enabled libxcb && die "ERROR: libxcb not found";
4444     } && disable x11grab && enable libxcb
4445
4446     disabled libxcb_shm ||
4447         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4448             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4449         } && check_header sys/shm.h && enable libxcb_shm
4450
4451     disabled libxcb_xfixes ||
4452         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4453             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4454         } && enable libxcb_xfixes
4455
4456     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4457     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4458 fi
4459
4460 if enabled x11grab; then
4461     enabled xlib || die "ERROR: Xlib not found"
4462     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
4463     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4464 fi
4465
4466 enabled vaapi && enabled xlib &&
4467     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4468     enable vaapi_x11
4469
4470 enabled vdpau &&
4471     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4472     disable vdpau
4473
4474 enabled vdpau && enabled xlib &&
4475     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4476     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4477     enable vdpau_x11
4478
4479 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4480
4481 # add some useful compiler flags if supported
4482 check_cflags -Wdeclaration-after-statement
4483 check_cflags -Wall
4484 check_cflags -Wdisabled-optimization
4485 check_cflags -Wpointer-arith
4486 check_cflags -Wredundant-decls
4487 check_cflags -Wcast-qual
4488 check_cflags -Wwrite-strings
4489 check_cflags -Wtype-limits
4490 check_cflags -Wundef
4491 check_cflags -Wmissing-prototypes
4492 check_cflags -Wstrict-prototypes
4493 enabled extra_warnings && check_cflags -Winline
4494
4495 check_disable_warning(){
4496     warning_flag=-W${1#-Wno-}
4497     test_cflags $warning_flag && add_cflags $1
4498 }
4499
4500 check_disable_warning -Wno-parentheses
4501 check_disable_warning -Wno-switch
4502 check_disable_warning -Wno-format-zero-length
4503 check_disable_warning -Wno-pointer-sign
4504
4505 # add some linker flags
4506 check_ldflags -Wl,--warn-common
4507 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4508 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4509 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4510
4511 # add some strip flags
4512 # -wN '..@*' is more selective than -x, but not available everywhere.
4513 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4514
4515 enabled neon_clobber_test &&
4516     check_ldflags -Wl,--wrap,avcodec_open2              \
4517                   -Wl,--wrap,avcodec_decode_audio4      \
4518                   -Wl,--wrap,avcodec_decode_video2      \
4519                   -Wl,--wrap,avcodec_decode_subtitle2   \
4520                   -Wl,--wrap,avcodec_encode_audio2      \
4521                   -Wl,--wrap,avcodec_encode_video2      \
4522                   -Wl,--wrap,avcodec_encode_subtitle    \
4523                   -Wl,--wrap,avresample_convert ||
4524     disable neon_clobber_test
4525
4526 enabled xmm_clobber_test &&
4527     check_ldflags -Wl,--wrap,avcodec_open2              \
4528                   -Wl,--wrap,avcodec_decode_audio4      \
4529                   -Wl,--wrap,avcodec_decode_video2      \
4530                   -Wl,--wrap,avcodec_decode_subtitle2   \
4531                   -Wl,--wrap,avcodec_encode_audio2      \
4532                   -Wl,--wrap,avcodec_encode_video2      \
4533                   -Wl,--wrap,avcodec_encode_subtitle    \
4534                   -Wl,--wrap,avresample_convert         \
4535                   -Wl,--wrap,sws_scale ||
4536     disable xmm_clobber_test
4537
4538 echo "X{};" > $TMPV
4539 if test_ldflags -Wl,--version-script,$TMPV; then
4540     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4541     check_cc <<EOF && enable symver_asm_label
4542 void ff_foo(void) __asm__ ("av_foo@VERSION");
4543 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4544 EOF
4545     check_cc <<EOF && enable symver_gnu_asm
4546 __asm__(".symver ff_foo,av_foo@VERSION");
4547 void ff_foo(void) {}
4548 EOF
4549 fi
4550
4551 if [ -z "$optflags" ]; then
4552     if enabled small; then
4553         optflags=$cflags_size
4554     elif enabled optimizations; then
4555         optflags=$cflags_speed
4556     else
4557         optflags=$cflags_noopt
4558     fi
4559 fi
4560
4561 check_optflags(){
4562     check_cflags "$@"
4563     enabled lto && check_ldflags "$@"
4564 }
4565
4566
4567 if enabled lto; then
4568     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4569     check_cflags  -flto
4570     check_ldflags -flto $cpuflags
4571 fi
4572
4573 check_optflags $optflags
4574 check_optflags -fno-math-errno
4575 check_optflags -fno-signed-zeros
4576
4577 if enabled icc; then
4578     # Just warnings, no remarks
4579     check_cflags -w1
4580     # -wd: Disable following warnings
4581     # 144, 167, 556: -Wno-pointer-sign
4582     # 1292: attribute "foo" ignored
4583     # 1419: external declaration in primary source file
4584     # 10006: ignoring unknown option -fno-signed-zeros
4585     # 10148: ignoring unknown option -Wno-parentheses
4586     # 10156: ignoring option '-W'; no argument required
4587     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4588     # 11030: Warning unknown option --as-needed
4589     # 10156: ignoring option '-export'; no argument required
4590     check_ldflags -wd10156,11030
4591     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4592     enable ebp_available
4593     if enabled x86_32; then
4594         icc_version=$($cc -dumpversion)
4595         test ${icc_version%%.*} -ge 11 &&
4596             check_cflags -falign-stack=maintain-16-byte ||
4597             disable aligned_stack
4598     fi
4599 elif enabled ccc; then
4600     # disable some annoying warnings
4601     add_cflags -msg_disable bitnotint
4602     add_cflags -msg_disable mixfuncvoid
4603     add_cflags -msg_disable nonstandcast
4604     add_cflags -msg_disable unsupieee
4605 elif enabled gcc; then
4606     check_optflags -fno-tree-vectorize
4607     check_cflags -Werror=implicit-function-declaration
4608     check_cflags -Werror=missing-prototypes
4609     check_cflags -Werror=return-type
4610     check_cflags -Werror=declaration-after-statement
4611     check_cflags -Werror=vla
4612     check_cflags -Werror=format-security
4613     check_cflags -fdiagnostics-color=auto
4614     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4615 elif enabled llvm_gcc; then
4616     check_cflags -mllvm -stack-alignment=16
4617 elif enabled clang; then
4618     check_cflags -mllvm -stack-alignment=16
4619     check_cflags -Qunused-arguments
4620     check_cflags -Werror=implicit-function-declaration
4621     check_cflags -Werror=missing-prototypes
4622     check_cflags -Werror=return-type
4623 elif enabled cparser; then
4624     add_cflags -Wno-missing-variable-declarations
4625     add_cflags -Wno-empty-statement
4626 elif enabled armcc; then
4627     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4628     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4629     # 2523: use of inline assembly is deprecated
4630     add_cflags -W${armcc_opt},--diag_suppress=2523
4631     add_cflags -W${armcc_opt},--diag_suppress=1207
4632     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4633     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4634     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4635     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4636 elif enabled tms470; then
4637     add_cflags -pds=824 -pds=837
4638     disable inline_asm
4639 elif enabled pathscale; then
4640     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4641 elif enabled_any msvc icl; then
4642     enabled x86_32 && disable aligned_stack
4643     enabled_all x86_32 debug && add_cflags -Oy-
4644     enabled debug && add_ldflags -debug
4645     enable pragma_deprecated
4646     if enabled icl; then
4647         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4648         # (correctly) on icl 13.x.
4649         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4650             add_cflags -Qansi-alias
4651         # icl will pass the inline asm tests but inline asm is currently
4652         # not supported (build will fail)
4653         disable inline_asm
4654     fi
4655     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
4656     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
4657 fi
4658
4659 case $as_type in
4660     clang)
4661         add_asflags -Qunused-arguments
4662     ;;
4663 esac
4664
4665 case $ld_type in
4666     clang)
4667         check_ldflags -Qunused-arguments
4668     ;;
4669 esac
4670
4671 case $target_os in
4672     osf1)
4673         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4674     ;;
4675     plan9)
4676         add_cppflags -Dmain=plan9_main
4677     ;;
4678 esac
4679
4680 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4681
4682 check_deps $CONFIG_LIST       \
4683            $CONFIG_EXTRA      \
4684            $HAVE_LIST         \
4685            $ALL_COMPONENTS    \
4686
4687 enabled_all dxva2 CoTaskMemFree &&
4688     prepend avconv_libs $($ldflags_filter "-lole32") &&
4689     enable dxva2_lib
4690
4691 ! enabled_any memalign posix_memalign aligned_malloc &&
4692     enabled simd_align_16 && enable memalign_hack
4693
4694 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
4695
4696 for thread in $THREADS_LIST; do
4697     if enabled $thread; then
4698         test -n "$thread_type" &&
4699             die "ERROR: Only one thread type must be selected." ||
4700             thread_type="$thread"
4701     fi
4702 done
4703
4704 enabled zlib && add_cppflags -DZLIB_CONST
4705
4706 # conditional library dependencies, in linking order
4707 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4708 enabled resample_filter && prepend avfilter_deps "avresample"
4709 enabled scale_filter    && prepend avfilter_deps "swscale"
4710
4711 enabled opus_decoder    && prepend avcodec_deps "avresample"
4712
4713 expand_deps(){
4714     lib_deps=${1}_deps
4715     eval "deps=\$$lib_deps"
4716     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4717     unique $lib_deps
4718 }
4719
4720 map 'expand_deps $v' $LIBRARY_LIST
4721
4722 echo "install prefix            $prefix"
4723 echo "source path               $source_path"
4724 echo "C compiler                $cc"
4725 echo "C library                 $libc_type"
4726 if test "$host_cc" != "$cc"; then
4727     echo "host C compiler           $host_cc"
4728     echo "host C library            $host_libc_type"
4729 fi
4730 echo "ARCH                      $arch ($cpu)"
4731 if test "$build_suffix" != ""; then
4732     echo "build suffix              $build_suffix"
4733 fi
4734 if test "$extra_version" != ""; then
4735     echo "version string suffix     $extra_version"
4736 fi
4737 echo "big-endian                ${bigendian-no}"
4738 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4739 if enabled x86; then
4740     echo "${yasmexe}                      ${yasm-no}"
4741     echo "MMX enabled               ${mmx-no}"
4742     echo "MMXEXT enabled            ${mmxext-no}"
4743     echo "3DNow! enabled            ${amd3dnow-no}"
4744     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4745     echo "SSE enabled               ${sse-no}"
4746     echo "SSSE3 enabled             ${ssse3-no}"
4747     echo "AVX enabled               ${avx-no}"
4748     echo "XOP enabled               ${xop-no}"
4749     echo "FMA3 enabled              ${fma3-no}"
4750     echo "FMA4 enabled              ${fma4-no}"
4751     echo "i686 features enabled     ${i686-no}"
4752     echo "CMOV is fast              ${fast_cmov-no}"
4753     echo "EBX available             ${ebx_available-no}"
4754     echo "EBP available             ${ebp_available-no}"
4755 fi
4756 if enabled aarch64; then
4757     echo "NEON enabled              ${neon-no}"
4758     echo "VFP enabled               ${vfp-no}"
4759 fi
4760 if enabled arm; then
4761     echo "ARMv5TE enabled           ${armv5te-no}"
4762     echo "ARMv6 enabled             ${armv6-no}"
4763     echo "ARMv6T2 enabled           ${armv6t2-no}"
4764     echo "VFP enabled               ${vfp-no}"
4765     echo "NEON enabled              ${neon-no}"
4766 fi
4767 if enabled ppc; then
4768     echo "AltiVec enabled           ${altivec-no}"
4769     echo "VSX enabled               ${vsx-no}"
4770     echo "POWER8 enabled            ${power8-no}"
4771     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4772     echo "dcbzl available           ${dcbzl-no}"
4773 fi
4774 echo "debug symbols             ${debug-no}"
4775 echo "optimize for size         ${small-no}"
4776 echo "optimizations             ${optimizations-no}"
4777 echo "static                    ${static-no}"
4778 echo "shared                    ${shared-no}"
4779 echo "new filter support        ${avfilter-no}"
4780 echo "network support           ${network-no}"
4781 echo "threading support         ${thread_type-no}"
4782 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4783 echo "SDL support               ${sdl-no}"
4784 test -n "$random_seed" &&
4785     echo "random seed               ${random_seed}"
4786 echo
4787
4788 echo "External libraries:"
4789 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4790 echo
4791
4792 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4793     echo "Enabled ${type}s:"
4794     eval list=\$$(toupper $type)_LIST
4795     print_enabled '_*' $list | print_3_columns
4796     echo
4797 done
4798
4799 license="LGPL version 2.1 or later"
4800 if enabled nonfree; then
4801     license="nonfree and unredistributable"
4802 elif enabled gplv3; then
4803     license="GPL version 3 or later"
4804 elif enabled lgplv3; then
4805     license="LGPL version 3 or later"
4806 elif enabled gpl; then
4807     license="GPL version 2 or later"
4808 fi
4809
4810 echo "License: $license"
4811
4812 echo "Creating config.mak and config.h..."
4813
4814 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4815
4816 config_files="$TMPH config.mak"
4817
4818 cat > config.mak <<EOF
4819 # Automatically generated by configure - do not modify!
4820 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4821 prefix=$prefix
4822 LIBDIR=\$(DESTDIR)$libdir
4823 SHLIBDIR=\$(DESTDIR)$shlibdir
4824 INCDIR=\$(DESTDIR)$incdir
4825 BINDIR=\$(DESTDIR)$bindir
4826 DATADIR=\$(DESTDIR)$datadir
4827 DOCDIR=\$(DESTDIR)$docdir
4828 MANDIR=\$(DESTDIR)$mandir
4829 SRC_PATH=$source_path
4830 CC_IDENT=$cc_ident
4831 ARCH=$arch
4832 INTRINSICS=$intrinsics
4833 CC=$cc
4834 AS=$as
4835 LD=$ld
4836 DEPCC=$dep_cc
4837 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4838 DEPAS=$as
4839 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4840 YASM=$yasmexe
4841 DEPYASM=$yasmexe
4842 AR=$ar
4843 ARFLAGS=$arflags
4844 AR_O=$ar_o
4845 RANLIB=$ranlib
4846 STRIP=$strip
4847 LN_S=$ln_s
4848 CPPFLAGS=$CPPFLAGS
4849 CFLAGS=$CFLAGS
4850 ASFLAGS=$ASFLAGS
4851 AS_C=$AS_C
4852 AS_O=$AS_O
4853 CC_C=$CC_C
4854 CC_E=$CC_E
4855 CC_O=$CC_O
4856 LD_O=$LD_O
4857 LD_LIB=$LD_LIB
4858 LD_PATH=$LD_PATH
4859 DLLTOOL=$dlltool
4860 LDFLAGS=$LDFLAGS
4861 LDEXEFLAGS=$LDEXEFLAGS
4862 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4863 STRIPFLAGS=$STRIPFLAGS
4864 YASMFLAGS=$YASMFLAGS
4865 BUILDSUF=$build_suffix
4866 FULLNAME=$FULLNAME
4867 LIBPREF=$LIBPREF
4868 LIBSUF=$LIBSUF
4869 LIBNAME=$LIBNAME
4870 SLIBPREF=$SLIBPREF
4871 SLIBSUF=$SLIBSUF
4872 EXESUF=$EXESUF
4873 EXTRA_VERSION=$extra_version
4874 CCDEP=$CCDEP
4875 CCDEP_FLAGS=$CCDEP_FLAGS
4876 ASDEP=$ASDEP
4877 ASDEP_FLAGS=$ASDEP_FLAGS
4878 CC_DEPFLAGS=$CC_DEPFLAGS
4879 AS_DEPFLAGS=$AS_DEPFLAGS
4880 HOSTCC=$host_cc
4881 HOSTLD=$host_ld
4882 HOSTCFLAGS=$host_cflags
4883 HOSTCPPFLAGS=$host_cppflags
4884 HOSTEXESUF=$HOSTEXESUF
4885 HOSTLDFLAGS=$host_ldflags
4886 HOSTLIBS=$host_libs
4887 DEPHOSTCC=$host_cc
4888 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4889 HOSTCCDEP=$HOSTCCDEP
4890 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4891 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4892 HOSTCC_C=$HOSTCC_C
4893 HOSTCC_O=$HOSTCC_O
4894 HOSTLD_O=$HOSTLD_O
4895 TARGET_EXEC=$target_exec $target_exec_args
4896 TARGET_PATH=$target_path
4897 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4898 CFLAGS-avplay=$sdl_cflags
4899 ZLIB=$($ldflags_filter -lz)
4900 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4901 EXTRALIBS=$extralibs
4902 COMPAT_OBJS=$compat_objs
4903 EXEOBJS=$exeobjs
4904 INSTALL=install
4905 LIBTARGET=${LIBTARGET}
4906 SLIBNAME=${SLIBNAME}
4907 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4908 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4909 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4910 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4911 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4912 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4913 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4914 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4915 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4916 EOF
4917
4918 get_version(){
4919     lcname=lib${1}
4920     name=$(toupper $lcname)
4921     file=$source_path/$lcname/version.h
4922     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4923     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4924     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4925     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4926     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4927 }
4928
4929 map 'get_version $v' $LIBRARY_LIST
4930
4931 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4932
4933 print_program_libs(){
4934     eval "program_libs=\$${1}_libs"
4935     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4936 }
4937
4938 map 'print_program_libs $v' $PROGRAM_LIST
4939
4940 cat > $TMPH <<EOF
4941 /* Automatically generated by configure - do not modify! */
4942 #ifndef LIBAV_CONFIG_H
4943 #define LIBAV_CONFIG_H
4944 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4945 #define LIBAV_LICENSE "$(c_escape $license)"
4946 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4947 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4948 #define restrict $_restrict
4949 #define EXTERN_PREFIX "${extern_prefix}"
4950 #define EXTERN_ASM ${extern_prefix}
4951 #define SLIBSUF "$SLIBSUF"
4952 EOF
4953
4954 test -n "$malloc_prefix" &&
4955     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4956
4957 if enabled yasm; then
4958     append config_files $TMPASM
4959     printf '' >$TMPASM
4960 fi
4961
4962 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4963
4964 print_config ARCH_   "$config_files" $ARCH_LIST
4965 print_config HAVE_   "$config_files" $HAVE_LIST
4966 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4967                                      $CONFIG_EXTRA      \
4968                                      $ALL_COMPONENTS    \
4969
4970 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4971
4972 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4973 cp_if_changed $TMPH config.h
4974 touch .config
4975
4976 enabled yasm && cp_if_changed $TMPASM config.asm
4977
4978 cat > $TMPH <<EOF
4979 /* Generated by ffconf */
4980 #ifndef AVUTIL_AVCONFIG_H
4981 #define AVUTIL_AVCONFIG_H
4982 EOF
4983
4984 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4985
4986 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4987
4988 cp_if_changed $TMPH libavutil/avconfig.h
4989
4990 test -n "$WARNINGS" && printf "\n$WARNINGS"
4991
4992 # build pkg-config files
4993
4994 lib_version(){
4995     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4996 }
4997
4998 pkgconfig_generate(){
4999     name=$1
5000     shortname=${name#lib}${build_suffix}
5001     comment=$2
5002     version=$3
5003     libs=$4
5004     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5005     requires=${requires%, }
5006     enabled ${name#lib} || return 0
5007     mkdir -p $name
5008     cat <<EOF > $name/$name.pc
5009 prefix=$prefix
5010 exec_prefix=\${prefix}
5011 libdir=$libdir
5012 includedir=$incdir
5013
5014 Name: $name
5015 Description: $comment
5016 Version: $version
5017 Requires: $(enabled shared || echo $requires)
5018 Requires.private: $(enabled shared && echo $requires)
5019 Conflicts:
5020 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
5021 Libs.private: $(enabled shared && echo $libs)
5022 Cflags: -I\${includedir}
5023 EOF
5024     cat <<EOF > $name/$name-uninstalled.pc
5025 prefix=
5026 exec_prefix=
5027 libdir=\${pcfiledir}
5028 includedir=${source_path}
5029
5030 Name: $name
5031 Description: $comment
5032 Version: $version
5033 Requires: $requires
5034 Conflicts:
5035 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
5036 Cflags: -I\${includedir}
5037 EOF
5038 }
5039
5040 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
5041 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
5042 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
5043 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
5044 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
5045 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$LIBM"
5046 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"