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