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
  90 Licensing options:
  91   --enable-gpl             allow use of GPL code, the resulting libs
  92                            and binaries will be under GPL [no]
  93   --enable-version3        upgrade (L)GPL to version 3 [no]
  94   --enable-nonfree         allow use of nonfree code, the resulting libs
  95                            and binaries will be unredistributable [no]
  96
  97 Configuration options:
  98   --disable-static         do not build static libraries [no]
  99   --enable-shared          build shared libraries [no]
 100   --enable-small           optimize for size instead of speed
 101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
 102   --enable-gray            enable full grayscale support (slower color)
 103   --disable-swscale-alpha  disable alpha channel support in swscale
 104   --disable-all            disable building components, libraries and programs
 105
 106 Program options:
 107   --disable-programs       do not build command line programs
 108   --disable-avconv         disable avconv build
 109   --disable-avplay         disable avplay build
 110   --disable-avprobe        disable avprobe build
 111   --disable-avserver       deprecated, does nothing
 112
 113 Component options:
 114   --disable-doc            do not build documentation
 115   --disable-avdevice       disable libavdevice build
 116   --disable-avcodec        disable libavcodec build
 117   --disable-avformat       disable libavformat build
 118   --disable-avutil         disable libavutil build
 119   --disable-swscale        disable libswscale build
 120   --disable-avfilter       disable video filter support [no]
 121   --disable-avresample     disable libavresample build [no]
 122   --disable-pthreads       disable pthreads [auto]
 123   --disable-w32threads     disable Win32 threads [auto]
 124   --disable-network        disable network support [no]
 125   --disable-dct            disable DCT code
 126   --disable-error-resilience disable error resilience code
 127   --disable-lsp            disable LSP code
 128   --disable-lzo            disable LZO decoder code
 129   --disable-mdct           disable MDCT code
 130   --disable-rdft           disable RDFT code
 131   --disable-fft            disable FFT code
 132
 133 Hardware accelerators:
 134   --enable-dxva2           enable DXVA2 code
 135   --enable-vaapi           enable VAAPI code
 136   --enable-vda             enable VDA code
 137   --enable-vdpau           enable VDPAU code
 138
 139 Individual component options:
 140   --disable-everything     disable all components listed below
 141   --disable-encoder=NAME   disable encoder NAME
 142   --enable-encoder=NAME    enable encoder NAME
 143   --disable-encoders       disable all encoders
 144   --disable-decoder=NAME   disable decoder NAME
 145   --enable-decoder=NAME    enable decoder NAME
 146   --disable-decoders       disable all decoders
 147   --disable-hwaccel=NAME   disable hwaccel NAME
 148   --enable-hwaccel=NAME    enable hwaccel NAME
 149   --disable-hwaccels       disable all hwaccels
 150   --disable-muxer=NAME     disable muxer NAME
 151   --enable-muxer=NAME      enable muxer NAME
 152   --disable-muxers         disable all muxers
 153   --disable-demuxer=NAME   disable demuxer NAME
 154   --enable-demuxer=NAME    enable demuxer NAME
 155   --disable-demuxers       disable all demuxers
 156   --enable-parser=NAME     enable parser NAME
 157   --disable-parser=NAME    disable parser NAME
 158   --disable-parsers        disable all parsers
 159   --enable-bsf=NAME        enable bitstream filter NAME
 160   --disable-bsf=NAME       disable bitstream filter NAME
 161   --disable-bsfs           disable all bitstream filters
 162   --enable-protocol=NAME   enable protocol NAME
 163   --disable-protocol=NAME  disable protocol NAME
 164   --disable-protocols      disable all protocols
 165   --enable-indev=NAME      enable input device NAME
 166   --disable-indev=NAME     disable input device NAME
 167   --disable-indevs         disable input devices
 168   --enable-outdev=NAME     enable output device NAME
 169   --disable-outdev=NAME    disable output device NAME
 170   --disable-outdevs        disable output devices
 171   --disable-devices        disable all devices
 172   --enable-filter=NAME     enable filter NAME
 173   --disable-filter=NAME    disable filter NAME
 174   --disable-filters        disable all filters
 175
 176 External library support:
 177   --enable-avisynth        enable reading of AviSynth script files [no]
 178   --enable-bzlib           enable bzlib [autodetect]
 179   --enable-frei0r          enable frei0r video filtering
 180   --enable-gnutls          enable gnutls [no]
 181   --enable-libbs2b         enable bs2b DSP library [no]
 182   --enable-libcdio         enable audio CD grabbing with libcdio
 183   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 184                            and libraw1394 [no]
 185   --enable-libfaac         enable AAC encoding via libfaac [no]
 186   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 187   --enable-libfreetype     enable libfreetype [no]
 188   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 189   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 190   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 191   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 192   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 193   --enable-libopencv       enable video filtering via libopencv [no]
 194   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 195   --enable-libopus         enable Opus de/encoding via libopus [no]
 196   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 197   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 198   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 199   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 200   --enable-libtheora       enable Theora encoding via libtheora [no]
 201   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 202   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 203   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 204   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
 205   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 206   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 207   --enable-libwebp         enable WebP encoding via libwebp [no]
 208   --enable-libx264         enable H.264 encoding via x264 [no]
 209   --enable-libx265         enable HEVC encoding via x265 [no]
 210   --enable-libxavs         enable AVS encoding via xavs [no]
 211   --enable-libxvid         enable Xvid encoding via xvidcore,
 212                            native MPEG-4/Xvid encoder exists [no]
 213   --enable-openssl         enable openssl [no]
 214   --enable-x11grab         enable X11 grabbing [no]
 215   --enable-zlib            enable zlib [autodetect]
 216
 217 Toolchain options:
 218   --arch=ARCH              select architecture [$arch]
 219   --cpu=CPU                select the minimum required CPU (affects
 220                            instruction selection, may crash on older CPUs)
 221   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 222   --enable-cross-compile   assume a cross-compiler is used
 223   --sysroot=PATH           root of cross-build tree
 224   --sysinclude=PATH        location of cross-build system headers
 225   --target-os=OS           compiler targets OS [$target_os]
 226   --target-exec=CMD        command to run executables on target
 227   --target-path=DIR        path to view of build directory on target
 228   --target-samples=DIR     path to samples directory on target
 229   --toolchain=NAME         set tool defaults according to NAME
 230   --nm=NM                  use nm tool
 231   --ar=AR                  use archive tool AR [$ar_default]
 232   --as=AS                  use assembler AS [$as_default]
 233   --cc=CC                  use C compiler CC [$cc_default]
 234   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 235   --ld=LD                  use linker LD
 236   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 237   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 238   --host-cc=HOSTCC         use host C compiler HOSTCC
 239   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 240   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 241   --host-ld=HOSTLD         use host linker HOSTLD
 242   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 243   --host-libs=HLIBS        use libs HLIBS when linking for host
 244   --host-os=OS             compiler host OS [$target_os]
 245   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 246   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 247   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 248   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 249   --extra-version=STRING   version string suffix []
 250   --optflags=OPTFLAGS      override optimization-related compiler flags
 251   --build-suffix=SUFFIX    library name suffix []
 252   --enable-pic             build position-independent code
 253   --enable-thumb           compile for Thumb instruction set
 254   --enable-lto             use link-time optimization
 255
 256 Advanced options (experts only):
 257   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 258   --disable-symver         disable symbol versioning
 259   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 260   --disable-safe-bitstream-reader
 261                            disable buffer boundary checking in bitreaders
 262                            (faster, but may crash)
 263   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 264   --enable-sram            allow use of on-chip SRAM
 265
 266 Optimization options (experts only):
 267   --disable-asm            disable all assembly optimizations
 268   --disable-altivec        disable AltiVec optimizations
 269   --disable-amd3dnow       disable 3DNow! optimizations
 270   --disable-amd3dnowext    disable 3DNow! extended optimizations
 271   --disable-mmx            disable MMX optimizations
 272   --disable-mmxext         disable MMXEXT optimizations
 273   --disable-sse            disable SSE optimizations
 274   --disable-sse2           disable SSE2 optimizations
 275   --disable-sse3           disable SSE3 optimizations
 276   --disable-ssse3          disable SSSE3 optimizations
 277   --disable-sse4           disable SSE4 optimizations
 278   --disable-sse42          disable SSE4.2 optimizations
 279   --disable-avx            disable AVX optimizations
 280   --disable-xop            disable XOP optimizations
 281   --disable-fma3           disable FMA3 optimizations
 282   --disable-fma4           disable FMA4 optimizations
 283   --disable-avx2           disable AVX2 optimizations
 284   --disable-armv5te        disable armv5te optimizations
 285   --disable-armv6          disable armv6 optimizations
 286   --disable-armv6t2        disable armv6t2 optimizations
 287   --disable-vfp            disable VFP optimizations
 288   --disable-neon           disable NEON optimizations
 289   --disable-inline-asm     disable use of inline assembly
 290   --disable-yasm           disable use of nasm/yasm assembly
 291
 292 Developer options (useful when working on Libav itself):
 293   --disable-debug          disable debugging symbols
 294   --enable-debug=LEVEL     set the debug level [$debuglevel]
 295   --disable-optimizations  disable compiler optimizations
 296   --enable-extra-warnings  enable more compiler warnings
 297   --samples=PATH           location of test samples for FATE, if not set use
 298                            \$LIBAV_SAMPLES at make invocation time.
 299   --enable-neon-clobber-test check NEON registers for clobbering (should be
 300                            used only for debugging purposes)
 301   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 302                            should be used only for debugging purposes)
 303   --enable-random          randomly enable/disable components
 304   --disable-random
 305   --enable-random=LIST     randomly enable/disable specific components or
 306   --disable-random=LIST    component groups. LIST is a comma-separated list
 307                            of NAME[:PROB] entries where NAME is a component
 308                            (group) and PROB the probability associated with
 309                            NAME (default 0.5).
 310   --random-seed=VALUE      seed value for --enable/disable-random
 311
 312 NOTE: Object files are built at the place where configure is launched.
 313 EOF
 314   exit 0
 315 }
 316
 317 quotes='""'
 318
 319 log(){
 320     echo "$@" >> $logfile
 321 }
 322
 323 log_file(){
 324     log BEGIN $1
 325     pr -n -t $1 >> $logfile
 326     log END $1
 327 }
 328
 329 echolog(){
 330     log "$@"
 331     echo "$@"
 332 }
 333
 334 warn(){
 335     log "WARNING: $*"
 336     WARNINGS="${WARNINGS}WARNING: $*\n"
 337 }
 338
 339 die(){
 340     echolog "$@"
 341     cat <<EOF
 342
 343 If you think configure made a mistake, make sure you are using the latest
 344 version from Git.  If the latest version fails, report the problem to the
 345 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 346 EOF
 347     if disabled logging; then
 348         cat <<EOF
 349 Rerun configure with logging enabled (do not use --disable-logging), and
 350 include the log this produces with your report.
 351 EOF
 352     else
 353         cat <<EOF
 354 Include the log file "$logfile" produced by configure as this will help
 355 solving the problem.
 356 EOF
 357     fi
 358     exit 1
 359 }
 360
 361 # Avoid locale weirdness, besides we really just want to translate ASCII.
 362 toupper(){
 363     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 364 }
 365
 366 tolower(){
 367     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 368 }
 369
 370 c_escape(){
 371     echo "$*" | sed 's/["\\]/\\\0/g'
 372 }
 373
 374 sh_quote(){
 375     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 376     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 377     echo "$v"
 378 }
 379
 380 cleanws(){
 381     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 382 }
 383
 384 filter(){
 385     pat=$1
 386     shift
 387     for v; do
 388         eval "case $v in $pat) echo $v ;; esac"
 389     done
 390 }
 391
 392 filter_out(){
 393     pat=$1
 394     shift
 395     for v; do
 396         eval "case $v in $pat) ;; *) echo $v ;; esac"
 397     done
 398 }
 399
 400 map(){
 401     m=$1
 402     shift
 403     for v; do eval $m; done
 404 }
 405
 406 add_suffix(){
 407     suffix=$1
 408     shift
 409     for v; do echo ${v}${suffix}; done
 410 }
 411
 412 set_all(){
 413     value=$1
 414     shift
 415     for var in $*; do
 416         eval $var=$value
 417     done
 418 }
 419
 420 set_weak(){
 421     value=$1
 422     shift
 423     for var; do
 424         eval : \${$var:=$value}
 425     done
 426 }
 427
 428 sanitize_var_name(){
 429     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 430 }
 431
 432 set_safe(){
 433     var=$1
 434     shift
 435     eval $(sanitize_var_name "$var")='$*'
 436 }
 437
 438 get_safe(){
 439     eval echo \$$(sanitize_var_name "$1")
 440 }
 441
 442 pushvar(){
 443     for pvar in $*; do
 444         eval level=\${${pvar}_level:=0}
 445         eval ${pvar}_${level}="\$$pvar"
 446         eval ${pvar}_level=$(($level+1))
 447     done
 448 }
 449
 450 popvar(){
 451     for pvar in $*; do
 452         eval level=\${${pvar}_level:-0}
 453         test $level = 0 && continue
 454         eval level=$(($level-1))
 455         eval $pvar="\${${pvar}_${level}}"
 456         eval ${pvar}_level=$level
 457         eval unset ${pvar}_${level}
 458     done
 459 }
 460
 461 enable(){
 462     set_all yes $*
 463 }
 464
 465 disable(){
 466     set_all no $*
 467 }
 468
 469 enable_weak(){
 470     set_weak yes $*
 471 }
 472
 473 disable_weak(){
 474     set_weak no $*
 475 }
 476
 477 enable_safe(){
 478     for var; do
 479         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 480     done
 481 }
 482
 483 disable_safe(){
 484     for var; do
 485         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 486     done
 487 }
 488
 489 do_enable_deep(){
 490     for var; do
 491         enabled $var && continue
 492         eval sel="\$${var}_select"
 493         eval sgs="\$${var}_suggest"
 494         pushvar var sgs
 495         enable_deep $sel
 496         popvar sgs
 497         enable_deep_weak $sgs
 498         popvar var
 499     done
 500 }
 501
 502 enable_deep(){
 503     do_enable_deep $*
 504     enable $*
 505 }
 506
 507 enable_deep_weak(){
 508     for var; do
 509         disabled $var && continue
 510         pushvar var
 511         do_enable_deep $var
 512         popvar var
 513         enable_weak $var
 514     done
 515 }
 516
 517 enabled(){
 518     test "${1#!}" = "$1" && op== || op=!=
 519     eval test "x\$${1#!}" $op "xyes"
 520 }
 521
 522 disabled(){
 523     test "${1#!}" = "$1" && op== || op=!=
 524     eval test "x\$${1#!}" $op "xno"
 525 }
 526
 527 enabled_all(){
 528     for opt; do
 529         enabled $opt || return 1
 530     done
 531 }
 532
 533 disabled_all(){
 534     for opt; do
 535         disabled $opt || return 1
 536     done
 537 }
 538
 539 enabled_any(){
 540     for opt; do
 541         enabled $opt && return 0
 542     done
 543 }
 544
 545 disabled_any(){
 546     for opt; do
 547         disabled $opt && return 0
 548     done
 549     return 1
 550 }
 551
 552 set_default(){
 553     for opt; do
 554         eval : \${$opt:=\$${opt}_default}
 555     done
 556 }
 557
 558 is_in(){
 559     value=$1
 560     shift
 561     for var in $*; do
 562         [ $var = $value ] && return 0
 563     done
 564     return 1
 565 }
 566
 567 do_check_deps(){
 568     for cfg; do
 569         cfg="${cfg#!}"
 570         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 571         disabled ${cfg}_checking && continue
 572         enable ${cfg}_checking
 573         append allopts $cfg
 574
 575         eval dep_all="\$${cfg}_deps"
 576         eval dep_any="\$${cfg}_deps_any"
 577         eval dep_sel="\$${cfg}_select"
 578         eval dep_sgs="\$${cfg}_suggest"
 579         eval dep_ifa="\$${cfg}_if"
 580         eval dep_ifn="\$${cfg}_if_any"
 581
 582         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 583         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 584         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 585
 586         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 587         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 588         enabled_all  $dep_all || disable $cfg
 589         enabled_any  $dep_any || disable $cfg
 590         disabled_any $dep_sel && disable $cfg
 591
 592         if enabled $cfg; then
 593             enable_deep $dep_sel
 594             enable_deep_weak $dep_sgs
 595         fi
 596
 597         disable ${cfg}_checking
 598     done
 599 }
 600
 601 check_deps(){
 602     unset allopts
 603
 604     do_check_deps "$@"
 605
 606     for cfg in $allopts; do
 607         enabled $cfg || continue
 608         eval dep_extralibs="\$${cfg}_extralibs"
 609         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 610     done
 611 }
 612
 613 print_config(){
 614     pfx=$1
 615     files=$2
 616     shift 2
 617     map 'eval echo "$v \${$v:-no}"' "$@" |
 618     awk "BEGIN { split(\"$files\", files) }
 619         {
 620             c = \"$pfx\" toupper(\$1);
 621             v = \$2;
 622             sub(/yes/, 1, v);
 623             sub(/no/,  0, v);
 624             for (f in files) {
 625                 file = files[f];
 626                 if (file ~ /\\.h\$/) {
 627                     printf(\"#define %s %d\\n\", c, v) >>file;
 628                 } else if (file ~ /\\.asm\$/) {
 629                     printf(\"%%define %s %d\\n\", c, v) >>file;
 630                 } else if (file ~ /\\.mak\$/) {
 631                     n = -v ? \"\" : \"!\";
 632                     printf(\"%s%s=yes\\n\", n, c) >>file;
 633                 }
 634             }
 635         }"
 636 }
 637
 638 print_enabled(){
 639     suf=$1
 640     shift
 641     for v; do
 642         enabled $v && printf "%s\n" ${v%$suf};
 643     done
 644 }
 645
 646 append(){
 647     var=$1
 648     shift
 649     eval "$var=\"\$$var $*\""
 650 }
 651
 652 prepend(){
 653     var=$1
 654     shift
 655     eval "$var=\"$* \$$var\""
 656 }
 657
 658 unique(){
 659     var=$1
 660     uniq_list=""
 661     for tok in $(eval echo \$$var); do
 662         uniq_list="$(filter_out $tok $uniq_list) $tok"
 663     done
 664     eval "$var=\"${uniq_list}\""
 665 }
 666
 667 add_cppflags(){
 668     append CPPFLAGS "$@"
 669 }
 670
 671 add_cflags(){
 672     append CFLAGS $($cflags_filter "$@")
 673 }
 674
 675 add_asflags(){
 676     append ASFLAGS $($asflags_filter "$@")
 677 }
 678
 679 add_ldflags(){
 680     append LDFLAGS $($ldflags_filter "$@")
 681 }
 682
 683 add_ldexeflags(){
 684     append LDEXEFLAGS $($ldflags_filter "$@")
 685 }
 686
 687 add_stripflags(){
 688     append STRIPFLAGS "$@"
 689 }
 690
 691 add_extralibs(){
 692     prepend extralibs $($ldflags_filter "$@")
 693 }
 694
 695 add_host_cppflags(){
 696     append host_cppflags "$@"
 697 }
 698
 699 add_host_cflags(){
 700     append host_cflags $($host_cflags_filter "$@")
 701 }
 702
 703 add_host_ldflags(){
 704     append host_ldflags $($host_ldflags_filter "$@")
 705 }
 706
 707 add_compat(){
 708     append compat_objs $1
 709     shift
 710     map 'add_cppflags -D$v' "$@"
 711 }
 712
 713 check_cmd(){
 714     log "$@"
 715     "$@" >> $logfile 2>&1
 716 }
 717
 718 cc_o(){
 719     eval printf '%s\\n' $CC_O
 720 }
 721
 722 cc_e(){
 723     eval printf '%s\\n' $CC_E
 724 }
 725
 726 check_cc(){
 727     log check_cc "$@"
 728     cat > $TMPC
 729     log_file $TMPC
 730     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 731 }
 732
 733 check_cpp(){
 734     log check_cpp "$@"
 735     cat > $TMPC
 736     log_file $TMPC
 737     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 738 }
 739
 740 as_o(){
 741     eval printf '%s\\n' $AS_O
 742 }
 743
 744 check_as(){
 745     log check_as "$@"
 746     cat > $TMPS
 747     log_file $TMPS
 748     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 749 }
 750
 751 check_inline_asm(){
 752     log check_inline_asm "$@"
 753     name="$1"
 754     code="$2"
 755     shift 2
 756     disable $name
 757     check_cc "$@" <<EOF && enable $name
 758 void foo(void){ __asm__ volatile($code); }
 759 EOF
 760 }
 761
 762 check_insn(){
 763     log check_insn "$@"
 764     check_inline_asm ${1}_inline "\"$2\""
 765     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 766 }
 767
 768 check_yasm(){
 769     log check_yasm "$@"
 770     echo "$1" > $TMPS
 771     log_file $TMPS
 772     shift 1
 773     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 774 }
 775
 776 ld_o(){
 777     eval printf '%s\\n' $LD_O
 778 }
 779
 780 check_ld(){
 781     log check_ld "$@"
 782     flags=$(filter_out '-l*' "$@")
 783     libs=$(filter '-l*' "$@")
 784     check_cc $($cflags_filter $flags) || return
 785     flags=$($ldflags_filter $flags)
 786     libs=$($ldflags_filter $libs)
 787     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 788 }
 789
 790 print_include(){
 791     hdr=$1
 792     test "${hdr%.h}" = "${hdr}" &&
 793         echo "#include $hdr"    ||
 794         echo "#include <$hdr>"
 795 }
 796
 797 check_code(){
 798     log check_code "$@"
 799     check=$1
 800     headers=$2
 801     code=$3
 802     shift 3
 803     {
 804         for hdr in $headers; do
 805             print_include $hdr
 806         done
 807         echo "int main(void) { $code; return 0; }"
 808     } | check_$check "$@"
 809 }
 810
 811 check_cppflags(){
 812     log check_cppflags "$@"
 813     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 814 int x;
 815 EOF
 816 }
 817
 818 test_cflags(){
 819     log test_cflags "$@"
 820     set -- $($cflags_filter "$@")
 821     check_cc "$@" <<EOF
 822 int x;
 823 EOF
 824 }
 825
 826 check_cflags(){
 827     log check_cflags "$@"
 828     test_cflags "$@" && add_cflags "$@"
 829 }
 830
 831 test_ldflags(){
 832     log test_ldflags "$@"
 833     check_ld "$@" <<EOF
 834 int main(void){ return 0; }
 835 EOF
 836 }
 837
 838 check_ldflags(){
 839     log check_ldflags "$@"
 840     test_ldflags "$@" && add_ldflags "$@"
 841 }
 842
 843 test_stripflags(){
 844     log test_stripflags "$@"
 845     # call check_cc to get a fresh TMPO
 846     check_cc <<EOF
 847 int main(void) { return 0; }
 848 EOF
 849     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 850 }
 851
 852 check_stripflags(){
 853     log check_stripflags "$@"
 854     test_stripflags "$@" && add_stripflags "$@"
 855 }
 856
 857 check_header(){
 858     log check_header "$@"
 859     header=$1
 860     shift
 861     disable_safe $header
 862     check_cpp "$@" <<EOF && enable_safe $header
 863 #include <$header>
 864 int x;
 865 EOF
 866 }
 867
 868 check_func(){
 869     log check_func "$@"
 870     func=$1
 871     shift
 872     disable $func
 873     check_ld "$@" <<EOF && enable $func
 874 extern int $func();
 875 int main(void){ $func(); }
 876 EOF
 877 }
 878
 879 check_mathfunc(){
 880     log check_mathfunc "$@"
 881     func=$1
 882     narg=$2
 883     shift 2
 884     test $narg = 2 && args="f, g" || args="f"
 885     disable $func
 886     check_ld "$@" <<EOF && enable $func
 887 #include <math.h>
 888 float foo(float f, float g) { return $func($args); }
 889 int main(void){ return 0; }
 890 EOF
 891 }
 892
 893 check_func_headers(){
 894     log check_func_headers "$@"
 895     headers=$1
 896     funcs=$2
 897     shift 2
 898     {
 899         for hdr in $headers; do
 900             print_include $hdr
 901         done
 902         for func in $funcs; do
 903             echo "long check_$func(void) { return (long) $func; }"
 904         done
 905         echo "int main(void) { return 0; }"
 906     } | check_ld "$@" && enable $funcs && enable_safe $headers
 907 }
 908
 909 check_cpp_condition(){
 910     log check_cpp_condition "$@"
 911     header=$1
 912     condition=$2
 913     shift 2
 914     check_cpp "$@" <<EOF
 915 #include <$header>
 916 #if !($condition)
 917 #error "unsatisfied condition: $condition"
 918 #endif
 919 EOF
 920 }
 921
 922 check_lib(){
 923     log check_lib "$@"
 924     header="$1"
 925     func="$2"
 926     shift 2
 927     check_header $header && check_func $func "$@" && add_extralibs "$@"
 928 }
 929
 930 check_lib2(){
 931     log check_lib2 "$@"
 932     headers="$1"
 933     funcs="$2"
 934     shift 2
 935     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 936 }
 937
 938 check_pkg_config(){
 939     log check_pkg_config "$@"
 940     pkg="$1"
 941     headers="$2"
 942     funcs="$3"
 943     shift 3
 944     check_cmd $pkg_config --exists --print-errors $pkg || return
 945     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
 946     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
 947     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 948         set_safe ${pkg}_cflags $pkg_cflags   &&
 949         set_safe ${pkg}_libs   $pkg_libs
 950 }
 951
 952 check_exec(){
 953     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 954 }
 955
 956 check_exec_crash(){
 957     code=$(cat)
 958
 959     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 960     # are safe but may not be available everywhere.  Thus we use
 961     # raise(SIGTERM) instead.  The check is run in a subshell so we
 962     # can redirect the "Terminated" message from the shell.  SIGBUS
 963     # is not defined by standard C so it is used conditionally.
 964
 965     (check_exec "$@") >> $logfile 2>&1 <<EOF
 966 #include <signal.h>
 967 static void sighandler(int sig){
 968     raise(SIGTERM);
 969 }
 970 int foo(void){
 971     $code
 972 }
 973 int (*func_ptr)(void) = foo;
 974 int main(void){
 975     signal(SIGILL, sighandler);
 976     signal(SIGFPE, sighandler);
 977     signal(SIGSEGV, sighandler);
 978 #ifdef SIGBUS
 979     signal(SIGBUS, sighandler);
 980 #endif
 981     return func_ptr();
 982 }
 983 EOF
 984 }
 985
 986 check_type(){
 987     log check_type "$@"
 988     headers=$1
 989     type=$2
 990     shift 2
 991     disable_safe "$type"
 992     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
 993 }
 994
 995 check_struct(){
 996     log check_struct "$@"
 997     headers=$1
 998     struct=$2
 999     member=$3
1000     shift 3
1001     disable_safe "${struct}_${member}"
1002     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1003         enable_safe "${struct}_${member}"
1004 }
1005
1006 check_builtin(){
1007     log check_builtin "$@"
1008     name=$1
1009     headers=$2
1010     builtin=$3
1011     shift 3
1012     disable "$name"
1013     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1014 }
1015
1016 check_compile_assert(){
1017     log check_compile_assert "$@"
1018     name=$1
1019     headers=$2
1020     condition=$3
1021     shift 3
1022     disable "$name"
1023     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1024 }
1025
1026 require(){
1027     name="$1"
1028     header="$2"
1029     func="$3"
1030     shift 3
1031     check_lib $header $func "$@" || die "ERROR: $name not found"
1032 }
1033
1034 require2(){
1035     name="$1"
1036     headers="$2"
1037     func="$3"
1038     shift 3
1039     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1040 }
1041
1042 require_pkg_config(){
1043     pkg="$1"
1044     check_pkg_config "$@" || die "ERROR: $pkg not found"
1045     add_cflags    $(get_safe ${pkg}_cflags)
1046     add_extralibs $(get_safe ${pkg}_libs)
1047 }
1048
1049 hostcc_e(){
1050     eval printf '%s\\n' $HOSTCC_E
1051 }
1052
1053 hostcc_o(){
1054     eval printf '%s\\n' $HOSTCC_O
1055 }
1056
1057 check_host_cc(){
1058     log check_host_cc "$@"
1059     cat > $TMPC
1060     log_file $TMPC
1061     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1062 }
1063
1064 check_host_cpp(){
1065     log check_host_cpp "$@"
1066     cat > $TMPC
1067     log_file $TMPC
1068     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1069 }
1070
1071 check_host_cppflags(){
1072     log check_host_cppflags "$@"
1073     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1074 int x;
1075 EOF
1076 }
1077
1078 check_host_cflags(){
1079     log check_host_cflags "$@"
1080     set -- $($host_cflags_filter "$@")
1081     check_host_cc "$@" <<EOF && append host_cflags "$@"
1082 int x;
1083 EOF
1084 }
1085
1086 check_host_cpp_condition(){
1087     log check_host_cpp_condition "$@"
1088     header=$1
1089     condition=$2
1090     shift 2
1091     check_host_cpp "$@" <<EOF
1092 #include <$header>
1093 #if !($condition)
1094 #error "unsatisfied condition: $condition"
1095 #endif
1096 EOF
1097 }
1098
1099 apply(){
1100     file=$1
1101     shift
1102     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1103 }
1104
1105 cp_if_changed(){
1106     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1107     mkdir -p "$(dirname $2)"
1108     $cp_f "$1" "$2"
1109 }
1110
1111 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1112 # system-dependent things.
1113
1114 COMPONENT_LIST="
1115     bsfs
1116     decoders
1117     demuxers
1118     encoders
1119     filters
1120     hwaccels
1121     indevs
1122     muxers
1123     outdevs
1124     parsers
1125     protocols
1126 "
1127
1128 EXAMPLE_LIST="
1129     avcodec_example
1130     filter_audio_example
1131     metadata_example
1132     output_example
1133     transcode_aac_example
1134 "
1135
1136 EXTERNAL_LIBRARY_LIST="
1137     avisynth
1138     bzlib
1139     frei0r
1140     gnutls
1141     libbs2b
1142     libcdio
1143     libdc1394
1144     libfaac
1145     libfdk_aac
1146     libfontconfig
1147     libfreetype
1148     libgsm
1149     libilbc
1150     libmp3lame
1151     libopencore_amrnb
1152     libopencore_amrwb
1153     libopencv
1154     libopenjpeg
1155     libopus
1156     libpulse
1157     librtmp
1158     libschroedinger
1159     libspeex
1160     libtheora
1161     libtwolame
1162     libvo_aacenc
1163     libvo_amrwbenc
1164     libvorbis
1165     libvpx
1166     libwavpack
1167     libwebp
1168     libx264
1169     libx265
1170     libxavs
1171     libxvid
1172     openssl
1173     x11grab
1174     zlib
1175 "
1176
1177 FEATURE_LIST="
1178     gray
1179     hardcoded_tables
1180     runtime_cpudetect
1181     safe_bitstream_reader
1182     shared
1183     small
1184     sram
1185     static
1186     swscale_alpha
1187 "
1188
1189 HWACCEL_LIST="
1190     dxva2
1191     vaapi
1192     vda
1193     vdpau
1194 "
1195
1196 LIBRARY_LIST="
1197     avcodec
1198     avdevice
1199     avfilter
1200     avformat
1201     avresample
1202     avutil
1203     swscale
1204 "
1205
1206 LICENSE_LIST="
1207     gpl
1208     nonfree
1209     version3
1210 "
1211
1212 PROGRAM_LIST="
1213     avconv
1214     avplay
1215     avprobe
1216 "
1217
1218 SUBSYSTEM_LIST="
1219     dct
1220     doc
1221     error_resilience
1222     fft
1223     lsp
1224     lzo
1225     mdct
1226     network
1227     rdft
1228 "
1229
1230 CONFIG_LIST="
1231     $COMPONENT_LIST
1232     $EXAMPLE_LIST
1233     $EXTERNAL_LIBRARY_LIST
1234     $FEATURE_LIST
1235     $HWACCEL_LIST
1236     $LICENSE_LIST
1237     $LIBRARY_LIST
1238     $PROGRAM_LIST
1239     $SUBSYSTEM_LIST
1240     memalign_hack
1241     neon_clobber_test
1242     pic
1243     pod2man
1244     texi2html
1245     thumb
1246     xmm_clobber_test
1247 "
1248
1249 THREADS_LIST="
1250     pthreads
1251     w32threads
1252 "
1253
1254 ATOMICS_LIST="
1255     atomics_gcc
1256     atomics_suncc
1257     atomics_win32
1258 "
1259
1260 ARCH_LIST="
1261     aarch64
1262     alpha
1263     arm
1264     avr32
1265     avr32_ap
1266     avr32_uc
1267     bfin
1268     ia64
1269     m68k
1270     mips
1271     mips64
1272     parisc
1273     ppc
1274     ppc64
1275     s390
1276     sh4
1277     sparc
1278     sparc64
1279     tilegx
1280     tilepro
1281     tomi
1282     x86
1283     x86_32
1284     x86_64
1285 "
1286
1287 ARCH_EXT_LIST_ARM="
1288     armv5te
1289     armv6
1290     armv6t2
1291     armv8
1292     neon
1293     vfp
1294     vfpv3
1295 "
1296
1297 ARCH_EXT_LIST_X86_SIMD="
1298     amd3dnow
1299     amd3dnowext
1300     avx
1301     avx2
1302     fma3
1303     fma4
1304     mmx
1305     mmxext
1306     sse
1307     sse2
1308     sse3
1309     sse4
1310     sse42
1311     ssse3
1312     xop
1313 "
1314
1315 ARCH_EXT_LIST_PPC="
1316     altivec
1317     dcbzl
1318     ldbrx
1319     ppc4xx
1320 "
1321
1322 ARCH_EXT_LIST_X86="
1323     $ARCH_EXT_LIST_X86_SIMD
1324     cpunop
1325     i686
1326 "
1327
1328 ARCH_EXT_LIST="
1329     $ARCH_EXT_LIST_ARM
1330     $ARCH_EXT_LIST_PPC
1331     $ARCH_EXT_LIST_X86
1332     loongson
1333     vis
1334 "
1335
1336 ARCH_FEATURES="
1337     aligned_stack
1338     fast_64bit
1339     fast_clz
1340     fast_cmov
1341     local_aligned_8
1342     local_aligned_16
1343     simd_align_16
1344 "
1345
1346 BUILTIN_LIST="
1347     atomic_cas_ptr
1348     machine_rw_barrier
1349     MemoryBarrier
1350     mm_empty
1351     rdtsc
1352     sync_val_compare_and_swap
1353 "
1354 HAVE_LIST_CMDLINE="
1355     inline_asm
1356     symver
1357     yasm
1358 "
1359
1360 HAVE_LIST_PUB="
1361     bigendian
1362     fast_unaligned
1363 "
1364
1365 HEADERS_LIST="
1366     alsa_asoundlib_h
1367     altivec_h
1368     arpa_inet_h
1369     cdio_paranoia_h
1370     cdio_paranoia_paranoia_h
1371     dev_bktr_ioctl_bt848_h
1372     dev_bktr_ioctl_meteor_h
1373     dev_ic_bt8xx_h
1374     dev_video_bktr_ioctl_bt848_h
1375     dev_video_meteor_ioctl_meteor_h
1376     direct_h
1377     dlfcn_h
1378     dxva_h
1379     gsm_h
1380     io_h
1381     mach_mach_time_h
1382     machine_ioctl_bt848_h
1383     machine_ioctl_meteor_h
1384     malloc_h
1385     poll_h
1386     sndio_h
1387     soundcard_h
1388     sys_mman_h
1389     sys_param_h
1390     sys_resource_h
1391     sys_select_h
1392     sys_soundcard_h
1393     sys_time_h
1394     sys_un_h
1395     sys_videoio_h
1396     unistd_h
1397     windows_h
1398     winsock2_h
1399 "
1400
1401 INTRINSICS_LIST="
1402     intrinsics_neon
1403 "
1404
1405 MATH_FUNCS="
1406     atanf
1407     atan2f
1408     cbrtf
1409     cosf
1410     exp2
1411     exp2f
1412     expf
1413     isinf
1414     isnan
1415     ldexpf
1416     llrint
1417     llrintf
1418     log2
1419     log2f
1420     log10f
1421     lrint
1422     lrintf
1423     powf
1424     rint
1425     round
1426     roundf
1427     sinf
1428     trunc
1429     truncf
1430 "
1431
1432 SYSTEM_FUNCS="
1433     aligned_malloc
1434     closesocket
1435     CommandLineToArgvW
1436     CoTaskMemFree
1437     CryptGenRandom
1438     dlopen
1439     fcntl
1440     flt_lim
1441     fork
1442     getaddrinfo
1443     gethrtime
1444     getopt
1445     GetProcessAffinityMask
1446     GetProcessMemoryInfo
1447     GetProcessTimes
1448     getrusage
1449     getservbyport
1450     GetSystemTimeAsFileTime
1451     gettimeofday
1452     inet_aton
1453     isatty
1454     jack_port_get_latency_range
1455     localtime_r
1456     mach_absolute_time
1457     MapViewOfFile
1458     memalign
1459     mkstemp
1460     mmap
1461     mprotect
1462     nanosleep
1463     posix_memalign
1464     sched_getaffinity
1465     SetConsoleTextAttribute
1466     setmode
1467     setrlimit
1468     Sleep
1469     strerror_r
1470     strptime
1471     sysconf
1472     sysctl
1473     usleep
1474     VirtualAlloc
1475 "
1476
1477 TOOLCHAIN_FEATURES="
1478     as_dn_directive
1479     as_func
1480     asm_mod_q
1481     attribute_may_alias
1482     attribute_packed
1483     ebp_available
1484     ebx_available
1485     gnu_as
1486     ibm_asm
1487     inline_asm_labels
1488     pragma_deprecated
1489     symver_asm_label
1490     symver_gnu_asm
1491     vfp_args
1492     xform_asm
1493     xmm_clobbers
1494 "
1495
1496 TYPES_LIST="
1497     socklen_t
1498     struct_addrinfo
1499     struct_group_source_req
1500     struct_ip_mreq_source
1501     struct_ipv6_mreq
1502     struct_pollfd
1503     struct_rusage_ru_maxrss
1504     struct_sockaddr_in6
1505     struct_sockaddr_sa_len
1506     struct_sockaddr_storage
1507     struct_v4l2_frmivalenum_discrete
1508 "
1509
1510 HAVE_LIST="
1511     $ARCH_EXT_LIST
1512     $(add_suffix _external $ARCH_EXT_LIST)
1513     $(add_suffix _inline   $ARCH_EXT_LIST)
1514     $ARCH_FEATURES
1515     $ATOMICS_LIST
1516     $BUILTIN_LIST
1517     $HAVE_LIST_CMDLINE
1518     $HAVE_LIST_PUB
1519     $HEADERS_LIST
1520     $INTRINSICS_LIST
1521     $MATH_FUNCS
1522     $SYSTEM_FUNCS
1523     $THREADS_LIST
1524     $TOOLCHAIN_FEATURES
1525     $TYPES_LIST
1526     atomics_native
1527     dos_paths
1528     dxva2_lib
1529     libc_msvcrt
1530     libdc1394_1
1531     libdc1394_2
1532     sdl
1533     threads
1534     vdpau_x11
1535     xlib
1536 "
1537
1538 # options emitted with CONFIG_ prefix but not available on the command line
1539 CONFIG_EXTRA="
1540     aandcttables
1541     ac3dsp
1542     audio_frame_queue
1543     audiodsp
1544     blockdsp
1545     bswapdsp
1546     cabac
1547     dvprofile
1548     fdctdsp
1549     gcrypt
1550     golomb
1551     gplv3
1552     h263dsp
1553     h264chroma
1554     h264dsp
1555     h264pred
1556     h264qpel
1557     hpeldsp
1558     huffman
1559     huffyuvdsp
1560     huffyuvencdsp
1561     idctdsp
1562     iirfilter
1563     intrax8
1564     lgplv3
1565     lpc
1566     me_cmp
1567     mpeg_er
1568     mpegaudio
1569     mpegaudiodsp
1570     mpegvideo
1571     mpegvideoenc
1572     nettle
1573     pixblockdsp
1574     qpeldsp
1575     rangecoder
1576     riffdec
1577     riffenc
1578     rtpdec
1579     rtpenc_chain
1580     sinewin
1581     startcode
1582     tpeldsp
1583     videodsp
1584     vp3dsp
1585 "
1586
1587 CMDLINE_SELECT="
1588     $ARCH_EXT_LIST
1589     $CONFIG_LIST
1590     $HAVE_LIST_CMDLINE
1591     $THREADS_LIST
1592     asm
1593     cross_compile
1594     debug
1595     extra_warnings
1596     logging
1597     lto
1598     optimizations
1599 "
1600
1601 PATHS_LIST="
1602     bindir
1603     datadir
1604     docdir
1605     incdir
1606     libdir
1607     mandir
1608     prefix
1609     shlibdir
1610 "
1611
1612 CMDLINE_SET="
1613     $PATHS_LIST
1614     ar
1615     arch
1616     as
1617     build_suffix
1618     cc
1619     cpu
1620     cross_prefix
1621     dep_cc
1622     extra_version
1623     host_cc
1624     host_cflags
1625     host_ld
1626     host_ldflags
1627     host_libs
1628     host_os
1629     ld
1630     logfile
1631     malloc_prefix
1632     nm
1633     optflags
1634     pkg_config
1635     pkg_config_flags
1636     random_seed
1637     samples
1638     sysinclude
1639     sysroot
1640     target_exec
1641     target_os
1642     target_path
1643     target_samples
1644     toolchain
1645 "
1646
1647 CMDLINE_APPEND="
1648     extra_cflags
1649     host_cppflags
1650 "
1651
1652 # code dependency declarations
1653
1654 # architecture extensions
1655
1656 armv5te_deps="arm"
1657 armv6_deps="arm"
1658 armv6t2_deps="arm"
1659 armv8_deps="aarch64"
1660 neon_deps_any="aarch64 arm"
1661 intrinsics_neon_deps="neon"
1662 vfp_deps_any="aarch64 arm"
1663 vfpv3_deps="vfp"
1664
1665 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1666
1667 altivec_deps="ppc"
1668 ppc4xx_deps="ppc"
1669
1670 cpunop_deps="i686"
1671 x86_64_select="i686"
1672 x86_64_suggest="fast_cmov"
1673
1674 amd3dnow_deps="mmx"
1675 amd3dnowext_deps="amd3dnow"
1676 i686_deps="x86"
1677 mmx_deps="x86"
1678 mmxext_deps="mmx"
1679 sse_deps="mmxext"
1680 sse2_deps="sse"
1681 sse3_deps="sse2"
1682 ssse3_deps="sse3"
1683 sse4_deps="ssse3"
1684 sse42_deps="sse4"
1685 avx_deps="sse42"
1686 xop_deps="avx"
1687 fma3_deps="avx"
1688 fma4_deps="avx"
1689 avx2_deps="avx"
1690
1691 mmx_external_deps="yasm"
1692 mmx_inline_deps="inline_asm"
1693 mmx_suggest="mmx_external mmx_inline"
1694
1695 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1696     eval dep=\$${ext}_deps
1697     eval ${ext}_external_deps='"${dep}_external"'
1698     eval ${ext}_inline_deps='"${dep}_inline"'
1699     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1700 done
1701
1702 aligned_stack_if_any="aarch64 ppc x86"
1703 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1704 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1705 fast_unaligned_if_any="aarch64 ppc x86"
1706 simd_align_16_if_any="altivec neon sse"
1707
1708 # system capabilities
1709 log2_deps="!libc_msvcrt"
1710
1711 symver_if_any="symver_asm_label symver_gnu_asm"
1712
1713 # threading support
1714 atomics_gcc_if="sync_val_compare_and_swap"
1715 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1716 atomics_win32_if="MemoryBarrier"
1717 atomics_native_if_any="$ATOMICS_LIST"
1718 w32threads_deps="atomics_native"
1719 threads_if_any="$THREADS_LIST"
1720
1721 # subsystems
1722 dct_select="rdft"
1723 error_resilience_select="me_cmp"
1724 intrax8_select="error_resilience"
1725 mdct_select="fft"
1726 rdft_select="fft"
1727 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1728 mpeg_er_select="error_resilience"
1729 mpegaudio_select="mpegaudiodsp"
1730 mpegaudiodsp_select="dct"
1731 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1732 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1733
1734 # decoders / encoders
1735 aac_decoder_select="mdct sinewin"
1736 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1737 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1738 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
1739 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1740 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1741 aic_decoder_select="golomb idctdsp"
1742 alac_encoder_select="lpc"
1743 als_decoder_select="bswapdsp"
1744 amrnb_decoder_select="lsp"
1745 amrwb_decoder_select="lsp"
1746 amv_decoder_select="sp5x_decoder"
1747 ape_decoder_select="bswapdsp"
1748 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1749 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1750 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1751 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1752 atrac1_decoder_select="mdct sinewin"
1753 atrac3_decoder_select="mdct"
1754 atrac3p_decoder_select="mdct sinewin"
1755 bink_decoder_select="blockdsp hpeldsp"
1756 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1757 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1758 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1759 cllc_decoder_select="bswapdsp"
1760 comfortnoise_encoder_select="lpc"
1761 cook_decoder_select="audiodsp mdct sinewin"
1762 cscd_decoder_select="lzo"
1763 cscd_decoder_suggest="zlib"
1764 dca_decoder_select="mdct"
1765 dnxhd_decoder_select="blockdsp idctdsp"
1766 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1767 dvvideo_decoder_select="dvprofile idctdsp"
1768 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1769 dxa_decoder_deps="zlib"
1770 eac3_decoder_select="ac3_decoder"
1771 eac3_encoder_select="ac3_encoder"
1772 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1773 eatgq_decoder_select="aandcttables idctdsp"
1774 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1775 exr_decoder_deps="zlib"
1776 ffv1_decoder_select="golomb rangecoder"
1777 ffv1_encoder_select="rangecoder"
1778 ffvhuff_decoder_select="huffyuv_decoder"
1779 ffvhuff_encoder_select="huffyuv_encoder"
1780 fic_decoder_select="golomb"
1781 flac_decoder_select="golomb"
1782 flac_encoder_select="bswapdsp golomb lpc"
1783 flashsv_decoder_deps="zlib"
1784 flashsv_encoder_deps="zlib"
1785 flashsv2_decoder_deps="zlib"
1786 flv_decoder_select="h263_decoder"
1787 flv_encoder_select="h263_encoder"
1788 fourxm_decoder_select="blockdsp bswapdsp"
1789 fraps_decoder_select="bswapdsp huffman"
1790 g2m_decoder_deps="zlib"
1791 g2m_decoder_select="blockdsp idctdsp"
1792 h261_decoder_select="mpeg_er mpegvideo"
1793 h261_encoder_select="aandcttables mpegvideoenc"
1794 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1795 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1796 h263i_decoder_select="h263_decoder"
1797 h263p_encoder_select="h263_encoder"
1798 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1799 h264_decoder_suggest="error_resilience"
1800 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1801 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1802 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1803 iac_decoder_select="imc_decoder"
1804 imc_decoder_select="bswapdsp fft mdct sinewin"
1805 indeo3_decoder_select="hpeldsp"
1806 interplay_video_decoder_select="hpeldsp"
1807 jpegls_decoder_select="golomb mjpeg_decoder"
1808 jpegls_encoder_select="golomb"
1809 jv_decoder_select="blockdsp"
1810 lagarith_decoder_select="huffyuvdsp"
1811 ljpeg_encoder_select="aandcttables idctdsp"
1812 loco_decoder_select="golomb"
1813 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1814 metasound_decoder_select="lsp mdct sinewin"
1815 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1816 mjpeg_decoder_select="blockdsp hpeldsp idctdsp"
1817 mjpeg_encoder_select="aandcttables mpegvideoenc"
1818 mjpegb_decoder_select="mjpeg_decoder"
1819 mlp_decoder_select="mlp_parser"
1820 motionpixels_decoder_select="bswapdsp"
1821 mp1_decoder_select="mpegaudio"
1822 mp1float_decoder_select="mpegaudio"
1823 mp2_decoder_select="mpegaudio"
1824 mp2float_decoder_select="mpegaudio"
1825 mp3_decoder_select="mpegaudio"
1826 mp3adu_decoder_select="mpegaudio"
1827 mp3adufloat_decoder_select="mpegaudio"
1828 mp3float_decoder_select="mpegaudio"
1829 mp3on4_decoder_select="mpegaudio"
1830 mp3on4float_decoder_select="mpegaudio"
1831 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1832 mpc8_decoder_select="mpegaudiodsp"
1833 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1834 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1835 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1836 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1837 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1838 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1839 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1840 mpeg4_encoder_select="h263_encoder"
1841 msmpeg4v1_decoder_select="h263_decoder"
1842 msmpeg4v2_decoder_select="h263_decoder"
1843 msmpeg4v2_encoder_select="h263_encoder"
1844 msmpeg4v3_decoder_select="h263_decoder"
1845 msmpeg4v3_encoder_select="h263_encoder"
1846 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1847 mxpeg_decoder_select="mjpeg_decoder"
1848 nellymoser_decoder_select="mdct sinewin"
1849 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1850 nuv_decoder_select="idctdsp lzo"
1851 on2avc_decoder_select="mdct"
1852 opus_decoder_deps="avresample"
1853 png_decoder_deps="zlib"
1854 png_encoder_deps="zlib"
1855 png_encoder_select="huffyuvencdsp"
1856 prores_decoder_select="idctdsp"
1857 prores_encoder_select="fdctdsp"
1858 qcelp_decoder_select="lsp"
1859 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1860 ra_144_encoder_select="audio_frame_queue lpc"
1861 ralf_decoder_select="golomb"
1862 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1863 rv10_encoder_select="h263_encoder"
1864 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1865 rv20_encoder_select="h263_encoder"
1866 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1867 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1868 shorten_decoder_select="golomb"
1869 sipr_decoder_select="lsp"
1870 sp5x_decoder_select="mjpeg_decoder"
1871 svq1_decoder_select="hpeldsp"
1872 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1873 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1874 svq3_decoder_suggest="zlib"
1875 tak_decoder_select="audiodsp"
1876 theora_decoder_select="vp3_decoder"
1877 thp_decoder_select="mjpeg_decoder"
1878 tiff_decoder_suggest="zlib"
1879 tiff_encoder_suggest="zlib"
1880 truehd_decoder_select="mlp_decoder"
1881 truemotion2_decoder_select="bswapdsp"
1882 truespeech_decoder_select="bswapdsp"
1883 tscc_decoder_deps="zlib"
1884 twinvq_decoder_select="mdct lsp sinewin"
1885 utvideo_decoder_select="bswapdsp"
1886 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1887 vble_decoder_select="huffyuvdsp"
1888 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1889 vc1image_decoder_select="vc1_decoder"
1890 vorbis_decoder_select="mdct"
1891 vorbis_encoder_select="mdct"
1892 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1893 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1894 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1895 vp6a_decoder_select="vp6_decoder"
1896 vp6f_decoder_select="vp6_decoder"
1897 vp7_decoder_select="h264pred videodsp"
1898 vp8_decoder_select="h264pred videodsp"
1899 vp9_decoder_select="videodsp"
1900 webp_decoder_select="vp8_decoder"
1901 wmapro_decoder_select="mdct sinewin"
1902 wmav1_decoder_select="mdct sinewin"
1903 wmav1_encoder_select="mdct sinewin"
1904 wmav2_decoder_select="mdct sinewin"
1905 wmav2_encoder_select="mdct sinewin"
1906 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1907 wmv1_decoder_select="h263_decoder"
1908 wmv1_encoder_select="h263_encoder"
1909 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1910 wmv2_encoder_select="h263_encoder"
1911 wmv3_decoder_select="vc1_decoder"
1912 wmv3image_decoder_select="wmv3_decoder"
1913 zerocodec_decoder_deps="zlib"
1914 zlib_decoder_deps="zlib"
1915 zlib_encoder_deps="zlib"
1916 zmbv_decoder_deps="zlib"
1917 zmbv_encoder_deps="zlib"
1918
1919 # hardware accelerators
1920 dxva2_deps="dxva2api_h"
1921 vaapi_deps="va_va_h"
1922 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1923 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1924 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1925
1926 h263_vaapi_hwaccel_deps="vaapi"
1927 h263_vaapi_hwaccel_select="h263_decoder"
1928 h263_vdpau_hwaccel_deps="vdpau"
1929 h263_vdpau_hwaccel_select="h263_decoder"
1930 h264_dxva2_hwaccel_deps="dxva2"
1931 h264_dxva2_hwaccel_select="h264_decoder"
1932 h264_vaapi_hwaccel_deps="vaapi"
1933 h264_vaapi_hwaccel_select="h264_decoder"
1934 h264_vda_hwaccel_deps="vda"
1935 h264_vda_hwaccel_select="h264_decoder"
1936 h264_vda_old_hwaccel_deps="vda"
1937 h264_vda_old_hwaccel_select="h264_decoder"
1938 h264_vdpau_hwaccel_deps="vdpau"
1939 h264_vdpau_hwaccel_select="h264_decoder"
1940 mpeg1_vdpau_hwaccel_deps="vdpau"
1941 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1942 mpeg2_dxva2_hwaccel_deps="dxva2"
1943 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1944 mpeg2_vaapi_hwaccel_deps="vaapi"
1945 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1946 mpeg2_vdpau_hwaccel_deps="vdpau"
1947 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1948 mpeg4_vaapi_hwaccel_deps="vaapi"
1949 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1950 mpeg4_vdpau_hwaccel_deps="vdpau"
1951 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1952 vc1_dxva2_hwaccel_deps="dxva2"
1953 vc1_dxva2_hwaccel_select="vc1_decoder"
1954 vc1_vaapi_hwaccel_deps="vaapi"
1955 vc1_vaapi_hwaccel_select="vc1_decoder"
1956 vc1_vdpau_hwaccel_deps="vdpau"
1957 vc1_vdpau_hwaccel_select="vc1_decoder"
1958 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1959 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1960 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1961
1962 # parsers
1963 h264_parser_select="h264_decoder"
1964 mpegvideo_parser_select="mpegvideo"
1965 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
1966 vc1_parser_select="mpegvideo startcode"
1967
1968 # external libraries
1969 libfaac_encoder_deps="libfaac"
1970 libfaac_encoder_select="audio_frame_queue"
1971 libfdk_aac_decoder_deps="libfdk_aac"
1972 libfdk_aac_encoder_deps="libfdk_aac"
1973 libfdk_aac_encoder_select="audio_frame_queue"
1974 libgsm_decoder_deps="libgsm"
1975 libgsm_encoder_deps="libgsm"
1976 libgsm_ms_decoder_deps="libgsm"
1977 libgsm_ms_encoder_deps="libgsm"
1978 libilbc_decoder_deps="libilbc"
1979 libilbc_encoder_deps="libilbc"
1980 libmp3lame_encoder_deps="libmp3lame"
1981 libmp3lame_encoder_select="audio_frame_queue"
1982 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1983 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1984 libopencore_amrnb_encoder_select="audio_frame_queue"
1985 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1986 libopenjpeg_decoder_deps="libopenjpeg"
1987 libopenjpeg_encoder_deps="libopenjpeg"
1988 libopus_decoder_deps="libopus"
1989 libopus_encoder_deps="libopus"
1990 libopus_encoder_select="audio_frame_queue"
1991 libschroedinger_decoder_deps="libschroedinger"
1992 libschroedinger_encoder_deps="libschroedinger"
1993 libspeex_decoder_deps="libspeex"
1994 libspeex_encoder_deps="libspeex"
1995 libspeex_encoder_select="audio_frame_queue"
1996 libtheora_encoder_deps="libtheora"
1997 libtwolame_encoder_deps="libtwolame"
1998 libvo_aacenc_encoder_deps="libvo_aacenc"
1999 libvo_aacenc_encoder_select="audio_frame_queue"
2000 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2001 libvorbis_encoder_deps="libvorbis"
2002 libvorbis_encoder_select="audio_frame_queue"
2003 libvpx_vp8_decoder_deps="libvpx"
2004 libvpx_vp8_encoder_deps="libvpx"
2005 libvpx_vp9_decoder_deps="libvpx"
2006 libvpx_vp9_encoder_deps="libvpx"
2007 libwavpack_encoder_deps="libwavpack"
2008 libwebp_encoder_deps="libwebp"
2009 libx264_encoder_deps="libx264"
2010 libx265_encoder_deps="libx265"
2011 libxavs_encoder_deps="libxavs"
2012 libxvid_encoder_deps="libxvid"
2013
2014 # demuxers / muxers
2015 ac3_demuxer_select="ac3_parser"
2016 asf_demuxer_select="riffdec"
2017 asf_muxer_select="riffenc"
2018 asf_stream_muxer_select="asf_muxer"
2019 avi_demuxer_select="riffdec"
2020 avi_muxer_select="riffenc"
2021 avisynth_demuxer_deps="avisynth"
2022 avisynth_demuxer_select="riffdec"
2023 caf_demuxer_select="riffdec"
2024 dirac_demuxer_select="dirac_parser"
2025 dv_demuxer_select="dvprofile"
2026 dv_muxer_select="dvprofile"
2027 dxa_demuxer_select="riffdec"
2028 eac3_demuxer_select="ac3_parser"
2029 f4v_muxer_select="mov_muxer"
2030 flac_demuxer_select="flac_parser"
2031 hds_muxer_select="flv_muxer"
2032 hls_muxer_select="mpegts_muxer"
2033 ipod_muxer_select="mov_muxer"
2034 ismv_muxer_select="mov_muxer"
2035 matroska_audio_muxer_select="matroska_muxer"
2036 matroska_demuxer_select="riffdec"
2037 matroska_demuxer_suggest="bzlib lzo zlib"
2038 matroska_muxer_select="riffenc"
2039 mmf_muxer_select="riffenc"
2040 mov_demuxer_select="riffdec"
2041 mov_demuxer_suggest="zlib"
2042 mov_muxer_select="riffenc rtpenc_chain"
2043 mp3_demuxer_select="mpegaudio_parser"
2044 mp4_muxer_select="mov_muxer"
2045 mpegts_muxer_select="adts_muxer latm_muxer"
2046 mpegtsraw_demuxer_select="mpegts_demuxer"
2047 mxf_d10_muxer_select="mxf_muxer"
2048 nut_muxer_select="riffenc"
2049 nuv_demuxer_select="riffdec"
2050 ogg_demuxer_select="golomb"
2051 psp_muxer_select="mov_muxer"
2052 rtp_demuxer_select="sdp_demuxer"
2053 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2054 rtsp_demuxer_select="http_protocol rtpdec"
2055 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2056 sap_demuxer_select="sdp_demuxer"
2057 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2058 sdp_demuxer_select="rtpdec"
2059 smoothstreaming_muxer_select="ismv_muxer"
2060 spdif_muxer_select="aac_parser"
2061 tak_demuxer_select="tak_parser"
2062 tg2_muxer_select="mov_muxer"
2063 tgp_muxer_select="mov_muxer"
2064 w64_demuxer_select="wav_demuxer"
2065 wav_demuxer_select="riffdec"
2066 wav_muxer_select="riffenc"
2067 webm_muxer_select="riffenc"
2068 wtv_demuxer_select="riffdec"
2069 xmv_demuxer_select="riffdec"
2070 xwma_demuxer_select="riffdec"
2071
2072 # indevs / outdevs
2073 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2074 alsa_outdev_deps="alsa_asoundlib_h"
2075 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2076 dv1394_indev_deps="dv1394"
2077 dv1394_indev_select="dv_demuxer"
2078 fbdev_indev_deps="linux_fb_h"
2079 jack_indev_deps="jack_jack_h pthreads"
2080 libcdio_indev_deps="libcdio"
2081 libdc1394_indev_deps="libdc1394"
2082 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2083 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2084 pulse_indev_deps="libpulse"
2085 sndio_indev_deps="sndio_h"
2086 sndio_outdev_deps="sndio_h"
2087 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2088 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2089 vfwcap_indev_extralibs="-lavicap32"
2090 x11grab_indev_deps="x11grab XShmCreateImage"
2091
2092 # protocols
2093 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2094 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2095 ffrtmpcrypt_protocol_select="tcp_protocol"
2096 ffrtmphttp_protocol_deps="!librtmp_protocol"
2097 ffrtmphttp_protocol_select="http_protocol"
2098 gopher_protocol_select="network"
2099 http_protocol_select="tcp_protocol"
2100 httpproxy_protocol_select="tcp_protocol"
2101 https_protocol_select="tls_protocol"
2102 icecast_protocol_select="http_protocol"
2103 librtmp_protocol_deps="librtmp"
2104 librtmpe_protocol_deps="librtmp"
2105 librtmps_protocol_deps="librtmp"
2106 librtmpt_protocol_deps="librtmp"
2107 librtmpte_protocol_deps="librtmp"
2108 mmsh_protocol_select="http_protocol"
2109 mmst_protocol_select="network"
2110 rtmp_protocol_deps="!librtmp_protocol"
2111 rtmp_protocol_select="tcp_protocol"
2112 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2113 rtmps_protocol_deps="!librtmp_protocol"
2114 rtmps_protocol_select="tls_protocol"
2115 rtmpt_protocol_select="ffrtmphttp_protocol"
2116 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2117 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2118 rtp_protocol_select="udp_protocol"
2119 sctp_protocol_deps="struct_sctp_event_subscribe"
2120 sctp_protocol_select="network"
2121 srtp_protocol_select="rtp_protocol"
2122 tcp_protocol_select="network"
2123 tls_protocol_deps_any="openssl gnutls"
2124 tls_protocol_select="tcp_protocol"
2125 udp_protocol_select="network"
2126 unix_protocol_deps="sys_un_h"
2127 unix_protocol_select="network"
2128
2129 # filters
2130 blackframe_filter_deps="gpl"
2131 boxblur_filter_deps="gpl"
2132 bs2b_filter_deps="libbs2b"
2133 cropdetect_filter_deps="gpl"
2134 delogo_filter_deps="gpl"
2135 drawtext_filter_deps="libfreetype"
2136 frei0r_filter_deps="frei0r dlopen"
2137 frei0r_filter_extralibs='$ldl'
2138 frei0r_src_filter_deps="frei0r dlopen"
2139 frei0r_src_filter_extralibs='$ldl'
2140 hqdn3d_filter_deps="gpl"
2141 interlace_filter_deps="gpl"
2142 ocv_filter_deps="libopencv"
2143 resample_filter_deps="avresample"
2144 scale_filter_deps="swscale"
2145
2146 # examples
2147 avcodec_example_deps="avcodec avutil"
2148 filter_audio_example_deps="avfilter avutil"
2149 metadata_example_deps="avformat avutil"
2150 output_example_deps="avcodec avformat avutil swscale"
2151 transcode_aac_example_deps="avcodec avformat avresample"
2152
2153 # libraries, in linking order
2154 avcodec_deps="avutil"
2155 avdevice_deps="avformat avcodec avutil"
2156 avfilter_deps="avutil"
2157 avformat_deps="avcodec avutil"
2158 avresample_deps="avutil"
2159 swscale_deps="avutil"
2160
2161 # programs
2162 avconv_deps="avcodec avfilter avformat avresample swscale"
2163 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2164                fps_filter null_filter resample_filter scale_filter
2165                setpts_filter trim_filter"
2166 avplay_deps="avcodec avformat avresample swscale sdl"
2167 avplay_libs='$sdl_libs'
2168 avplay_select="rdft"
2169 avprobe_deps="avcodec avformat"
2170
2171 # documentation
2172 pod2man_deps="doc"
2173 texi2html_deps="doc"
2174
2175 # default parameters
2176
2177 logfile="config.log"
2178
2179 # installation paths
2180 prefix_default="/usr/local"
2181 bindir_default='${prefix}/bin'
2182 datadir_default='${prefix}/share/avconv'
2183 docdir_default='${prefix}/share/doc/libav'
2184 incdir_default='${prefix}/include'
2185 libdir_default='${prefix}/lib'
2186 mandir_default='${prefix}/share/man'
2187 shlibdir_default="$libdir_default"
2188
2189 # toolchain
2190 ar_default="ar"
2191 cc_default="gcc"
2192 host_cc_default="gcc"
2193 cp_f="cp -f"
2194 ln_s="ln -s -f"
2195 nm_default="nm -g"
2196 objformat="elf"
2197 pkg_config_default=pkg-config
2198 ranlib="ranlib"
2199 strip="strip"
2200 yasmexe="yasm"
2201
2202 # machine
2203 arch_default=$(uname -m)
2204 cpu="generic"
2205 intrinsics="none"
2206
2207 # OS
2208 target_os_default=$(tolower $(uname -s))
2209 host_os=$target_os_default
2210
2211 # configurable options
2212 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2213
2214 enable asm
2215 enable debug
2216 enable doc
2217 enable optimizations
2218 enable safe_bitstream_reader
2219 enable static
2220 enable swscale_alpha
2221
2222 # By default, enable only those hwaccels that have no external dependencies.
2223 enable dxva2 vdpau
2224
2225 # build settings
2226 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2227 LIBPREF="lib"
2228 LIBSUF=".a"
2229 FULLNAME='$(NAME)$(BUILDSUF)'
2230 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2231 SLIBPREF="lib"
2232 SLIBSUF=".so"
2233 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2234 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2235 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2236 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2237 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2238 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2239
2240 asflags_filter=echo
2241 cflags_filter=echo
2242 ldflags_filter=echo
2243
2244 AS_C='-c'
2245 AS_O='-o $@'
2246 CC_C='-c'
2247 CC_E='-E -o $@'
2248 CC_O='-o $@'
2249 LD_O='-o $@'
2250 LD_LIB='-l%'
2251 LD_PATH='-L'
2252 HOSTCC_C='-c'
2253 HOSTCC_E='-E -o $@'
2254 HOSTCC_O='-o $@'
2255 HOSTLD_O='-o $@'
2256
2257 host_libs='-lm'
2258 host_cflags_filter=echo
2259 host_ldflags_filter=echo
2260
2261 target_path='$(CURDIR)'
2262
2263 # since the object filename is not given with the -MM flag, the compiler
2264 # is only able to print the basename, and we must add the path ourselves
2265 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2266 DEPFLAGS='-MM'
2267
2268 # find source path
2269 if test -f configure; then
2270     source_path=.
2271 else
2272     source_path=$(cd $(dirname "$0"); pwd)
2273     echo "$source_path" | grep -q '[[:blank:]]' &&
2274         die "Out of tree builds are impossible with whitespace in source path."
2275     test -e "$source_path/config.h" &&
2276         die "Out of tree builds are impossible with config.h in source dir."
2277 fi
2278
2279 for v in "$@"; do
2280     r=${v#*=}
2281     l=${v%"$r"}
2282     r=$(sh_quote "$r")
2283     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2284 done
2285
2286 find_things(){
2287     thing=$1
2288     pattern=$2
2289     file=$source_path/$3
2290     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2291 }
2292
2293 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2294 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2295 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2296 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2297 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2298 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2299 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2300 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2301 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2302 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2303 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2304
2305 ALL_COMPONENTS="
2306     $BSF_LIST
2307     $DECODER_LIST
2308     $DEMUXER_LIST
2309     $ENCODER_LIST
2310     $FILTER_LIST
2311     $HWACCEL_LIST
2312     $INDEV_LIST
2313     $MUXER_LIST
2314     $OUTDEV_LIST
2315     $PARSER_LIST
2316     $PROTOCOL_LIST
2317 "
2318
2319 for n in $COMPONENT_LIST; do
2320     v=$(toupper ${n%s})_LIST
2321     eval enable \$$v
2322     eval ${n}_if_any="\$$v"
2323 done
2324
2325 enable $ARCH_EXT_LIST
2326
2327 die_unknown(){
2328     echo "Unknown option \"$1\"."
2329     echo "See $0 --help for available options."
2330     exit 1
2331 }
2332
2333 print_3_columns() {
2334     cat | tr ' ' '\n' | sort | pr -r -3 -t
2335 }
2336
2337 show_list() {
2338     suffix=_$1
2339     shift
2340     echo $* | sed s/$suffix//g | print_3_columns
2341     exit 0
2342 }
2343
2344 rand_list(){
2345     IFS=', '
2346     set -- $*
2347     unset IFS
2348     for thing; do
2349         comp=${thing%:*}
2350         prob=${thing#$comp}
2351         prob=${prob#:}
2352         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2353         echo "prob ${prob:-0.5}"
2354         printf '%s\n' $comp
2355     done
2356 }
2357
2358 do_random(){
2359     action=$1
2360     shift
2361     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2362     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2363 }
2364
2365 for opt do
2366     optval="${opt#*=}"
2367     case "$opt" in
2368         --extra-ldflags=*)
2369             add_ldflags $optval
2370         ;;
2371         --extra-ldexeflags=*)
2372             add_ldexeflags $optval
2373         ;;
2374         --extra-libs=*)
2375             add_extralibs $optval
2376         ;;
2377         --disable-devices)
2378             disable $INDEV_LIST $OUTDEV_LIST
2379         ;;
2380         --enable-debug=*)
2381             debuglevel="$optval"
2382         ;;
2383         --disable-programs)
2384             disable $PROGRAM_LIST
2385         ;;
2386         --disable-everything)
2387             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2388         ;;
2389         --disable-all)
2390             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2391             disable $LIBRARY_LIST $PROGRAM_LIST doc
2392         ;;
2393         --enable-random|--disable-random)
2394             action=${opt%%-random}
2395             do_random ${action#--} $COMPONENT_LIST
2396         ;;
2397         --enable-random=*|--disable-random=*)
2398             action=${opt%%-random=*}
2399             do_random ${action#--} $optval
2400         ;;
2401         --enable-*=*|--disable-*=*)
2402             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2403             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2404             eval list=\$$(toupper $thing)_LIST
2405             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2406             $action $(filter "$name" $list)
2407         ;;
2408         --enable-avserver|--disable-avserver*)
2409             warn "avserver has been removed, the ${opt} option is only"\
2410                  "provided for compatibility and will be removed in the future"
2411         ;;
2412         --enable-?*|--disable-?*)
2413             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2414             if is_in $option $COMPONENT_LIST; then
2415                 test $action = disable && action=unset
2416                 eval $action \$$(toupper ${option%s})_LIST
2417             elif is_in $option $CMDLINE_SELECT; then
2418                 $action $option
2419             else
2420                 die_unknown $opt
2421             fi
2422         ;;
2423         --list-*)
2424             NAME="${opt#--list-}"
2425             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2426             NAME=${NAME%s}
2427             eval show_list $NAME \$$(toupper $NAME)_LIST
2428         ;;
2429         --help|-h) show_help
2430         ;;
2431         *)
2432             optname="${opt%%=*}"
2433             optname="${optname#--}"
2434             optname=$(echo "$optname" | sed 's/-/_/g')
2435             if is_in $optname $CMDLINE_SET; then
2436                 eval $optname='$optval'
2437             elif is_in $optname $CMDLINE_APPEND; then
2438                 append $optname "$optval"
2439             else
2440                 die_unknown $opt
2441             fi
2442         ;;
2443     esac
2444 done
2445
2446 disabled logging && logfile=/dev/null
2447
2448 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2449 set >> $logfile
2450
2451 test -n "$cross_prefix" && enable cross_compile
2452
2453 if enabled cross_compile; then
2454     test -n "$arch" && test -n "$target_os" ||
2455         die "Must specify target arch and OS when cross-compiling"
2456 fi
2457
2458 ar_default="${cross_prefix}${ar_default}"
2459 cc_default="${cross_prefix}${cc_default}"
2460 nm_default="${cross_prefix}${nm_default}"
2461 pkg_config_default="${cross_prefix}${pkg_config_default}"
2462 ranlib="${cross_prefix}${ranlib}"
2463 strip="${cross_prefix}${strip}"
2464
2465 sysinclude_default="${sysroot}/usr/include"
2466
2467 case "$toolchain" in
2468     clang-asan)
2469         cc_default="clang"
2470         add_cflags  -fsanitize=address
2471         add_ldflags -fsanitize=address
2472     ;;
2473     clang-tsan)
2474         cc_default="clang"
2475         add_cflags  -fsanitize=thread -pie
2476         add_ldflags -fsanitize=thread -pie
2477     ;;
2478     clang-usan)
2479         cc_default="clang"
2480         add_cflags  -fsanitize=undefined -O1
2481         add_ldflags -fsanitize=undefined
2482     ;;
2483     gcc-asan)
2484         cc_default="gcc"
2485         add_cflags  -fsanitize=address
2486         add_ldflags -fsanitize=address
2487     ;;
2488     gcc-tsan)
2489         cc_default="gcc"
2490         add_cflags  -fsanitize=thread -pie -fPIC
2491         add_ldflags -fsanitize=thread -pie -fPIC
2492     ;;
2493     gcc-usan)
2494         cc_default="gcc"
2495         add_cflags  -fsanitize=undefined
2496         add_ldflags -fsanitize=undefined
2497     ;;
2498     valgrind-massif)
2499         target_exec_default="valgrind"
2500         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2501     ;;
2502     valgrind-memcheck)
2503         target_exec_default="valgrind"
2504         target_exec_args="--track-origins=yes --leak-check=full"
2505     ;;
2506     msvc)
2507         # Check whether the current MSVC version needs the C99 converter.
2508         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2509         # support enough of C99 to build libav. Default to the new
2510         # behaviour if the regexp was unable to match anything, since this
2511         # successfully parses the version number of existing supported
2512         # versions that require the converter (MSVC 2010 and 2012).
2513         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2514         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2515             cc_default="cl"
2516         else
2517             cc_default="c99wrap cl"
2518         fi
2519         ld_default="link"
2520         nm_default="dumpbin -symbols"
2521         ar_default="lib"
2522         target_os_default="win32"
2523         # Use a relative path for TMPDIR. This makes sure all the
2524         # ffconf temp files are written with a relative path, avoiding
2525         # issues with msys/win32 path conversion for MSVC parameters
2526         # such as -Fo<file> or -out:<file>.
2527         TMPDIR=.
2528     ;;
2529     icl)
2530         cc_default="icl"
2531         ld_default="xilink"
2532         nm_default="dumpbin -symbols"
2533         ar_default="xilib"
2534         target_os_default="win32"
2535         TMPDIR=.
2536     ;;
2537     gcov)
2538         add_cflags  -fprofile-arcs -ftest-coverage
2539         add_ldflags -fprofile-arcs -ftest-coverage
2540     ;;
2541     hardened)
2542         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2543         add_ldflags -Wl,-z,relro -Wl,-z,now
2544     ;;
2545     ?*)
2546         die "Unknown toolchain $toolchain"
2547     ;;
2548 esac
2549
2550 set_default arch cc pkg_config sysinclude target_exec target_os
2551 enabled cross_compile || host_cc_default=$cc
2552 set_default host_cc
2553
2554 if ! $pkg_config --version >/dev/null 2>&1; then
2555     warn "$pkg_config not found, library detection may fail."
2556     pkg_config=false
2557 fi
2558
2559 exesuf() {
2560     case $1 in
2561         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2562     esac
2563 }
2564
2565 EXESUF=$(exesuf $target_os)
2566 HOSTEXESUF=$(exesuf $host_os)
2567
2568 # set temporary file name
2569 : ${TMPDIR:=$TEMPDIR}
2570 : ${TMPDIR:=$TMP}
2571 : ${TMPDIR:=/tmp}
2572
2573 if ! check_cmd mktemp -u XXXXXX; then
2574     # simple replacement for missing mktemp
2575     # NOT SAFE FOR GENERAL USE
2576     mktemp(){
2577         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2578     }
2579 fi
2580
2581 tmpfile(){
2582     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2583         (set -C; exec > $tmp) 2>/dev/null ||
2584         die "Unable to create temporary file in $TMPDIR."
2585     append TMPFILES $tmp
2586     eval $1=$tmp
2587 }
2588
2589 trap 'rm -f -- $TMPFILES' EXIT
2590
2591 tmpfile TMPASM .asm
2592 tmpfile TMPC   .c
2593 tmpfile TMPE   $EXESUF
2594 tmpfile TMPH   .h
2595 tmpfile TMPO   .o
2596 tmpfile TMPS   .S
2597 tmpfile TMPSH  .sh
2598 tmpfile TMPV   .ver
2599
2600 unset -f mktemp
2601
2602 chmod +x $TMPE
2603
2604 # make sure we can execute files in $TMPDIR
2605 cat > $TMPSH 2>> $logfile <<EOF
2606 #! /bin/sh
2607 EOF
2608 chmod +x $TMPSH >> $logfile 2>&1
2609 if ! $TMPSH >> $logfile 2>&1; then
2610     cat <<EOF
2611 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2612 variable to another directory and make sure that it is not mounted noexec.
2613 EOF
2614     die "Sanity test failed."
2615 fi
2616
2617 armasm_flags(){
2618     for flag; do
2619         case $flag in
2620             # Filter out MSVC cl.exe options from cflags that shouldn't
2621             # be passed to gas-preprocessor
2622             -M[TD]*)                                            ;;
2623             *)                  echo $flag                      ;;
2624         esac
2625    done
2626 }
2627
2628 ccc_flags(){
2629     for flag; do
2630         case $flag in
2631             -std=c99)           echo -c99                       ;;
2632             -mcpu=*)            echo -arch ${flag#*=}           ;;
2633             -mieee)             echo -ieee                      ;;
2634             -O*|-fast)          echo $flag                      ;;
2635             -fno-math-errno)    echo -assume nomath_errno       ;;
2636             -g)                 echo -g3                        ;;
2637             -Wall)              echo -msg_enable level2         ;;
2638             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2639             -Wl,*)              echo $flag                      ;;
2640             -f*|-W*)                                            ;;
2641             *)                  echo $flag                      ;;
2642         esac
2643    done
2644 }
2645
2646 cparser_flags(){
2647     for flag; do
2648         case $flag in
2649             -Wno-switch)             echo -Wno-switch-enum ;;
2650             -Wno-format-zero-length) ;;
2651             -Wdisabled-optimization) ;;
2652             -Wno-pointer-sign)       echo -Wno-other ;;
2653             *)                       echo $flag ;;
2654         esac
2655     done
2656 }
2657
2658 msvc_common_flags(){
2659     for flag; do
2660         case $flag in
2661             # In addition to specifying certain flags under the compiler
2662             # specific filters, they must be specified here as well or else the
2663             # generic catch all at the bottom will print the original flag.
2664             -Wall)                ;;
2665             -std=c99)             ;;
2666             # Common flags
2667             -fomit-frame-pointer) ;;
2668             -g)                   echo -Z7 ;;
2669             -fno-math-errno)      ;;
2670             -fno-common)          ;;
2671             -fno-signed-zeros)    ;;
2672             -fPIC)                ;;
2673             -mthumb)              ;;
2674             -march=*)             ;;
2675             -lz)                  echo zlib.lib ;;
2676             -lavifil32)           echo vfw32.lib ;;
2677             -lavicap32)           echo vfw32.lib user32.lib ;;
2678             -l*)                  echo ${flag#-l}.lib ;;
2679             *)                    echo $flag ;;
2680         esac
2681     done
2682 }
2683
2684 msvc_flags(){
2685     msvc_common_flags "$@"
2686     for flag; do
2687         case $flag in
2688             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2689                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2690                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2691                                        -wd4273 ;;
2692         esac
2693     done
2694 }
2695
2696 icl_flags(){
2697     msvc_common_flags "$@"
2698     for flag; do
2699         case $flag in
2700             # Despite what Intel's documentation says -Wall, which is supported
2701             # on Windows, does enable remarks so disable them here.
2702             -Wall)                echo $flag -Qdiag-disable:remark ;;
2703             -std=c99)             echo -Qstd=c99 ;;
2704         esac
2705     done
2706 }
2707
2708 pgi_flags(){
2709     for flag; do
2710         case $flag in
2711             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2712             -fomit-frame-pointer) echo -Mnoframe ;;
2713             -g)                   echo -gopt ;;
2714             *)                    echo $flag ;;
2715         esac
2716     done
2717 }
2718
2719 suncc_flags(){
2720     for flag; do
2721         case $flag in
2722             -march=*|-mcpu=*)
2723                 case "${flag#*=}" in
2724                     native)                   echo -xtarget=native       ;;
2725                     v9|niagara)               echo -xarch=sparc          ;;
2726                     ultrasparc)               echo -xarch=sparcvis       ;;
2727                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2728                     i586|pentium)             echo -xchip=pentium        ;;
2729                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2730                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2731                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2732                     pentium4*)          echo -xtarget=pentium4           ;;
2733                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2734                     *-sse3)             echo -xarch=sse3                 ;;
2735                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2736                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2737                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2738                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2739                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2740                     k8|opteron|athlon64|athlon-fx)
2741                                                echo -xarch=sse2a         ;;
2742                     athlon*)                   echo -xarch=pentium_proa  ;;
2743                 esac
2744                 ;;
2745             -std=c99)             echo -xc99              ;;
2746             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2747             -fPIC)                echo -KPIC -xcode=pic32 ;;
2748             -W*,*)                echo $flag              ;;
2749             -f*-*|-W*|-mimpure-text)                      ;;
2750             -shared)              echo -G                 ;;
2751             *)                    echo $flag              ;;
2752         esac
2753     done
2754 }
2755
2756 tms470_flags(){
2757     for flag; do
2758         case $flag in
2759             -march=*|-mcpu=*)
2760                 case "${flag#*=}" in
2761                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2762                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2763                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2764                     armv6*|arm11*)          echo -mv=6   ;;
2765                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2766                                             echo -mv=5e  ;;
2767                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2768                 esac
2769                 ;;
2770             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2771             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2772             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2773             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2774             -msoft-float)   echo --float_support=vfplib       ;;
2775             -O[0-3]|-mf=*)  echo $flag                        ;;
2776             -g)             echo -g -mn                       ;;
2777             -pds=*)         echo $flag                        ;;
2778             -D*|-I*)        echo $flag                        ;;
2779             --gcc|--abi=*)  echo $flag                        ;;
2780             -me)            echo $flag                        ;;
2781         esac
2782     done
2783 }
2784
2785 probe_cc(){
2786     pfx=$1
2787     _cc=$2
2788
2789     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2790     unset _ld_o _ldflags _ld_lib _ld_path
2791     unset _depflags _DEPCMD _DEPFLAGS
2792     _flags_filter=echo
2793
2794     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2795         _type=llvm_gcc
2796         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2797         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2798         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2799         _cflags_speed='-O3'
2800         _cflags_size='-Os'
2801     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2802         _type=gcc
2803         gcc_version=$($_cc --version | head -n1)
2804         gcc_basever=$($_cc -dumpversion)
2805         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2806         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2807         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2808         if ! $_cc -dumpversion | grep -q '^2\.'; then
2809             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2810         fi
2811         _cflags_speed='-O3'
2812         _cflags_size='-Os'
2813     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2814         _type=icc
2815         _ident=$($_cc --version | head -n1)
2816         _depflags='-MMD'
2817         _cflags_speed='-O3'
2818         _cflags_size='-Os'
2819         _cflags_noopt='-O1'
2820     elif $_cc -v 2>&1 | grep -q xlc; then
2821         _type=xlc
2822         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2823         _cflags_speed='-O5'
2824         _cflags_size='-O5 -qcompact'
2825     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2826         _type=ccc
2827         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2828         _DEPFLAGS='-M'
2829         _cflags_speed='-fast'
2830         _cflags_size='-O1'
2831         _flags_filter=ccc_flags
2832     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2833         test -d "$sysroot" || die "No valid sysroot specified."
2834         _type=armcc
2835         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2836         armcc_conf="$PWD/armcc.conf"
2837         $_cc --arm_linux_configure                 \
2838              --arm_linux_config_file="$armcc_conf" \
2839              --configure_sysroot="$sysroot"        \
2840              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2841              die "Error creating armcc configuration file."
2842         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2843         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2844         as_default="${cross_prefix}gcc"
2845         _depflags='-MMD'
2846         _cflags_speed='-O3'
2847         _cflags_size='-Os'
2848     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2849         _type=tms470
2850         _ident=$($_cc -version | head -n1 | tr -s ' ')
2851         _flags='--gcc --abi=eabi -me'
2852         _cc_e='-ppl -fe=$@'
2853         _cc_o='-fe=$@'
2854         _depflags='-ppa -ppd=$(@:.o=.d)'
2855         _cflags_speed='-O3 -mf=5'
2856         _cflags_size='-O3 -mf=2'
2857         _flags_filter=tms470_flags
2858     elif $_cc -v 2>&1 | grep -q clang; then
2859         _type=clang
2860         _ident=$($_cc --version | head -n1)
2861         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2862         _cflags_speed='-O3'
2863         _cflags_size='-Os'
2864     elif $_cc -V 2>&1 | grep -q Sun; then
2865         _type=suncc
2866         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2867         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2868         _DEPFLAGS='-xM1 -xc99'
2869         _ldflags='-std=c99'
2870         _cflags_speed='-O5'
2871         _cflags_size='-O5 -xspace'
2872         _flags_filter=suncc_flags
2873     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2874         _type=pathscale
2875         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2876         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2877         _cflags_speed='-O2'
2878         _cflags_size='-Os'
2879         _flags_filter='filter_out -Wdisabled-optimization'
2880     elif $_cc -v 2>&1 | grep -q Open64; then
2881         _type=open64
2882         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2883         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2884         _cflags_speed='-O2'
2885         _cflags_size='-Os'
2886         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2887     elif $_cc -V 2>&1 | grep -q Portland; then
2888         _type=pgi
2889         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2890         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2891         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2892         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2893         _cflags_noopt="-O1"
2894         _flags_filter=pgi_flags
2895     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
2896         _type=armasm
2897         _ident=$($_cc | head -n1)
2898         # 4509: "This form of conditional instruction is deprecated"
2899         _flags="-nologo -ignore 4509"
2900         _flags_filter=armasm_flags
2901     elif $_cc 2>&1 | grep -q Microsoft; then
2902         _type=msvc
2903         _ident=$($cc 2>&1 | head -n1)
2904         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2905         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2906         _cflags_speed="-O2"
2907         _cflags_size="-O1"
2908         if $_cc 2>&1 | grep -q Linker; then
2909             _ld_o='-out:$@'
2910         else
2911             _ld_o='-Fe$@'
2912         fi
2913         _cc_o='-Fo$@'
2914         _cc_e='-P -Fi$@'
2915         _flags_filter=msvc_flags
2916         _ld_lib='lib%.a'
2917         _ld_path='-libpath:'
2918         _flags='-nologo'
2919         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2920         if [ $pfx = hostcc ]; then
2921             append _cflags -Dsnprintf=_snprintf
2922         fi
2923     elif $_cc 2>&1 | grep -q Intel; then
2924         _type=icl
2925         _ident=$($cc 2>&1 | head -n1)
2926         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2927         # Not only is O3 broken on 13.x+ but it is slower on all previous
2928         # versions (tested) as well.
2929         _cflags_speed="-O2"
2930         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2931         if $_cc 2>&1 | grep -q Linker; then
2932             _ld_o='-out:$@'
2933         else
2934             _ld_o='-Fe$@'
2935         fi
2936         _cc_o='-Fo$@'
2937         _cc_e='-P'
2938         _flags_filter=icl_flags
2939         _ld_lib='lib%.a'
2940         _ld_path='-libpath:'
2941         # -Qdiag-error to make icl error when seeing certain unknown arguments
2942         _flags='-nologo -Qdiag-error:4044,10157'
2943         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2944         # with MSVC which enables it by default.
2945         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2946         if [ $pfx = hostcc ]; then
2947             append _cflags -Dsnprintf=_snprintf
2948         fi
2949     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2950         _type=cparser
2951         _ident=$($_cc --version | head -n1)
2952         _depflags='-MMD'
2953         _cflags_speed='-O4'
2954         _cflags_size='-O2'
2955         _flags_filter=cparser_flags
2956     fi
2957
2958     eval ${pfx}_type=\$_type
2959     eval ${pfx}_ident=\$_ident
2960 }
2961
2962 set_ccvars(){
2963     eval ${1}_C=\${_cc_c-\${${1}_C}}
2964     eval ${1}_E=\${_cc_e-\${${1}_E}}
2965     eval ${1}_O=\${_cc_o-\${${1}_O}}
2966
2967     if [ -n "$_depflags" ]; then
2968         eval ${1}_DEPFLAGS=\$_depflags
2969     else
2970         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2971         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2972         eval DEP${1}FLAGS=\$_flags
2973     fi
2974 }
2975
2976 probe_cc cc "$cc"
2977 cflags_filter=$_flags_filter
2978 cflags_speed=$_cflags_speed
2979 cflags_size=$_cflags_size
2980 cflags_noopt=$_cflags_noopt
2981 add_cflags $_flags $_cflags
2982 cc_ldflags=$_ldflags
2983 set_ccvars CC
2984
2985 probe_cc hostcc "$host_cc"
2986 host_cflags_filter=$_flags_filter
2987 add_host_cflags  $_flags $_cflags
2988 set_ccvars HOSTCC
2989
2990 test -n "$cc_type" && enable $cc_type ||
2991     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2992
2993 : ${as_default:=$cc}
2994 : ${dep_cc_default:=$cc}
2995 : ${ld_default:=$cc}
2996 : ${host_ld_default:=$host_cc}
2997 set_default ar as dep_cc ld host_ld
2998
2999 probe_cc as "$as"
3000 asflags_filter=$_flags_filter
3001 add_asflags $_flags $_cflags
3002 set_ccvars AS
3003
3004 probe_cc ld "$ld"
3005 ldflags_filter=$_flags_filter
3006 add_ldflags $_flags $_ldflags
3007 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3008 LD_O=${_ld_o-$LD_O}
3009 LD_LIB=${_ld_lib-$LD_LIB}
3010 LD_PATH=${_ld_path-$LD_PATH}
3011
3012 probe_cc hostld "$host_ld"
3013 host_ldflags_filter=$_flags_filter
3014 add_host_ldflags $_flags $_ldflags
3015 HOSTLD_O=${_ld_o-$HOSTLD_O}
3016
3017 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3018     probe_cc depcc "$dep_cc"
3019     CCDEP=${_DEPCMD:-$DEPCMD}
3020     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3021     DEPCCFLAGS=$_flags
3022 fi
3023
3024 if $ar 2>&1 | grep -q Microsoft; then
3025     arflags="-nologo"
3026     ar_o='-out:$@'
3027 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3028     arflags="rq"
3029     ar_o='$@'
3030 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3031     arflags='-Xany -r -c'
3032     ar_o='$@'
3033 else
3034     arflags="rc"
3035     ar_o='$@'
3036 fi
3037
3038 add_cflags $extra_cflags
3039 add_asflags $extra_cflags
3040
3041 if test -n "$sysroot"; then
3042     case "$cc_type" in
3043         gcc|llvm_gcc|clang)
3044             add_cppflags --sysroot="$sysroot"
3045             add_ldflags --sysroot="$sysroot"
3046         ;;
3047         tms470)
3048             add_cppflags -I"$sysinclude"
3049             add_ldflags  --sysroot="$sysroot"
3050         ;;
3051     esac
3052 fi
3053
3054 if test "$cpu" = host; then
3055     enabled cross_compile &&
3056         die "--cpu=host makes no sense when cross-compiling."
3057
3058     case "$cc_type" in
3059         gcc|llvm_gcc)
3060             check_native(){
3061                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3062                 sed -n "/cc1.*$1=/{
3063                             s/.*$1=\\([^ ]*\\).*/\\1/
3064                             p
3065                             q
3066                         }" $TMPE
3067             }
3068             cpu=$(check_native -march || check_native -mcpu)
3069         ;;
3070     esac
3071
3072     test "${cpu:-host}" = host &&
3073         die "--cpu=host not supported with compiler $cc"
3074 fi
3075
3076 # Deal with common $arch aliases
3077 case "$arch" in
3078     aarch64|arm64)
3079         arch="aarch64"
3080     ;;
3081     arm*)
3082         arch="arm"
3083     ;;
3084     mips*|IP*)
3085         arch="mips"
3086     ;;
3087     parisc*|hppa*)
3088         arch="parisc"
3089     ;;
3090     "Power Macintosh"|ppc*|powerpc*)
3091         arch="ppc"
3092     ;;
3093     s390|s390x)
3094         arch="s390"
3095     ;;
3096     sh4|sh)
3097         arch="sh4"
3098     ;;
3099     sun4u|sparc*)
3100         arch="sparc"
3101     ;;
3102     tilegx|tile-gx)
3103         arch="tilegx"
3104     ;;
3105     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3106         arch="x86"
3107     ;;
3108 esac
3109
3110 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3111 enable $arch
3112
3113 # Add processor-specific flags
3114 if enabled aarch64; then
3115
3116     case $cpu in
3117         armv*)
3118             cpuflags="-march=$cpu"
3119         ;;
3120         *)
3121             cpuflags="-mcpu=$cpu"
3122         ;;
3123     esac
3124
3125 elif enabled alpha; then
3126
3127     cpuflags="-mcpu=$cpu"
3128
3129 elif enabled arm; then
3130
3131     check_arm_arch() {
3132         check_cpp_condition stddef.h \
3133             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3134             $cpuflags
3135     }
3136
3137     probe_arm_arch() {
3138         if   check_arm_arch 4;        then echo armv4;
3139         elif check_arm_arch 4T;       then echo armv4t;
3140         elif check_arm_arch 5;        then echo armv5;
3141         elif check_arm_arch 5E;       then echo armv5e;
3142         elif check_arm_arch 5T;       then echo armv5t;
3143         elif check_arm_arch 5TE;      then echo armv5te;
3144         elif check_arm_arch 5TEJ;     then echo armv5te;
3145         elif check_arm_arch 6;        then echo armv6;
3146         elif check_arm_arch 6J;       then echo armv6j;
3147         elif check_arm_arch 6K;       then echo armv6k;
3148         elif check_arm_arch 6Z;       then echo armv6z;
3149         elif check_arm_arch 6ZK;      then echo armv6zk;
3150         elif check_arm_arch 6T2;      then echo armv6t2;
3151         elif check_arm_arch 7;        then echo armv7;
3152         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3153         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3154         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3155         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3156         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3157         fi
3158     }
3159
3160     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3161
3162     case $cpu in
3163         armv*)
3164             cpuflags="-march=$cpu"
3165             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3166         ;;
3167         *)
3168             cpuflags="-mcpu=$cpu"
3169             case $cpu in
3170                 cortex-a*)                               subarch=armv7a  ;;
3171                 cortex-r*)                               subarch=armv7r  ;;
3172                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3173                 arm11*)                                  subarch=armv6   ;;
3174                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3175                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3176                 *)                             subarch=$(probe_arm_arch) ;;
3177             esac
3178         ;;
3179     esac
3180
3181     case "$subarch" in
3182         armv5t*)    enable fast_clz                ;;
3183         armv[6-8]*) enable fast_clz fast_unaligned ;;
3184     esac
3185
3186 elif enabled avr32; then
3187
3188     case $cpu in
3189         ap7[02]0[0-2])
3190             subarch="avr32_ap"
3191             cpuflags="-mpart=$cpu"
3192         ;;
3193         ap)
3194             subarch="avr32_ap"
3195             cpuflags="-march=$cpu"
3196         ;;
3197         uc3[ab]*)
3198             subarch="avr32_uc"
3199             cpuflags="-mcpu=$cpu"
3200         ;;
3201         uc)
3202             subarch="avr32_uc"
3203             cpuflags="-march=$cpu"
3204         ;;
3205     esac
3206
3207 elif enabled bfin; then
3208
3209     cpuflags="-mcpu=$cpu"
3210
3211 elif enabled mips; then
3212
3213     cpuflags="-march=$cpu"
3214
3215 elif enabled ppc; then
3216
3217     disable ldbrx
3218
3219     case $(tolower $cpu) in
3220         601|ppc601|powerpc601)
3221             cpuflags="-mcpu=601"
3222             disable altivec
3223         ;;
3224         603*|ppc603*|powerpc603*)
3225             cpuflags="-mcpu=603"
3226             disable altivec
3227         ;;
3228         604*|ppc604*|powerpc604*)
3229             cpuflags="-mcpu=604"
3230             disable altivec
3231         ;;
3232         g3|75*|ppc75*|powerpc75*)
3233             cpuflags="-mcpu=750"
3234             disable altivec
3235         ;;
3236         g4|745*|ppc745*|powerpc745*)
3237             cpuflags="-mcpu=7450"
3238         ;;
3239         74*|ppc74*|powerpc74*)
3240             cpuflags="-mcpu=7400"
3241         ;;
3242         g5|970|ppc970|powerpc970)
3243             cpuflags="-mcpu=970"
3244         ;;
3245         power[3-7]*)
3246             cpuflags="-mcpu=$cpu"
3247         ;;
3248         cell)
3249             cpuflags="-mcpu=cell"
3250             enable ldbrx
3251         ;;
3252         e500mc)
3253             cpuflags="-mcpu=e500mc"
3254             disable altivec
3255         ;;
3256         e500v2)
3257             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3258             disable altivec
3259             disable dcbzl
3260         ;;
3261         e500)
3262             cpuflags="-mcpu=8540 -mhard-float"
3263             disable altivec
3264             disable dcbzl
3265         ;;
3266     esac
3267
3268 elif enabled sparc; then
3269
3270     case $cpu in
3271         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3272             cpuflags="-mcpu=$cpu"
3273         ;;
3274         ultrasparc*|niagara[234])
3275             cpuflags="-mcpu=$cpu"
3276         ;;
3277     esac
3278
3279 elif enabled x86; then
3280
3281     case $cpu in
3282         i[345]86|pentium)
3283             cpuflags="-march=$cpu"
3284             disable mmx
3285         ;;
3286         # targets that do NOT support nopl and conditional mov (cmov)
3287         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3288             cpuflags="-march=$cpu"
3289             disable i686
3290         ;;
3291         # targets that do support nopl and conditional mov (cmov)
3292         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3293             cpuflags="-march=$cpu"
3294             enable i686
3295             enable fast_cmov
3296         ;;
3297         # targets that do support conditional mov but on which it's slow
3298         pentium4|pentium4m|prescott|nocona)
3299             cpuflags="-march=$cpu"
3300             enable i686
3301             disable fast_cmov
3302         ;;
3303     esac
3304
3305 fi
3306
3307 if [ "$cpu" != generic ]; then
3308     add_cflags  $cpuflags
3309     add_asflags $cpuflags
3310 fi
3311
3312 # compiler sanity check
3313 check_exec <<EOF
3314 int main(void){ return 0; }
3315 EOF
3316 if test "$?" != 0; then
3317     echo "$cc is unable to create an executable file."
3318     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3319         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3320         echo "Only do this if you know what cross compiling means."
3321     fi
3322     die "C compiler test failed."
3323 fi
3324
3325 add_cppflags -D_ISOC99_SOURCE
3326 check_cflags -std=c99
3327 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3328 #include <stdlib.h>
3329 EOF
3330 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3331 #include <stdlib.h>
3332 EOF
3333
3334 add_host_cppflags -D_ISOC99_SOURCE
3335 check_host_cflags -std=c99
3336 check_host_cflags -Wall
3337 check_host_cflags -O3
3338
3339 check_64bit(){
3340     arch32=$1
3341     arch64=$2
3342     expr=$3
3343     check_code cc "" "int test[2*($expr) - 1]" &&
3344         subarch=$arch64 || subarch=$arch32
3345 }
3346
3347 case "$arch" in
3348     aarch64|alpha|ia64)
3349         spic=$shared
3350     ;;
3351     mips)
3352         check_64bit mips mips64 '_MIPS_SIM > 1'
3353         spic=$shared
3354     ;;
3355     parisc)
3356         check_64bit parisc parisc64 'sizeof(void *) > 4'
3357         spic=$shared
3358     ;;
3359     ppc)
3360         check_64bit ppc ppc64 'sizeof(void *) > 4'
3361         spic=$shared
3362     ;;
3363     s390)
3364         check_64bit s390 s390x 'sizeof(void *) > 4'
3365         spic=$shared
3366     ;;
3367     sparc)
3368         check_64bit sparc sparc64 'sizeof(void *) > 4'
3369         spic=$shared
3370     ;;
3371     x86)
3372         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3373         if test "$subarch" = "x86_64"; then
3374             spic=$shared
3375         fi
3376     ;;
3377 esac
3378
3379 enable $subarch
3380 enabled spic && enable_weak pic
3381
3382 # OS specific
3383 case $target_os in
3384     aix)
3385         SHFLAGS=-shared
3386         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3387         enabled shared && add_ldflags -Wl,-brtl
3388         ;;
3389     android)
3390         disable symver
3391         SLIB_INSTALL_NAME='$(SLIBNAME)'
3392         SLIB_INSTALL_LINKS=
3393         # soname not set on purpose
3394         SHFLAGS=-shared
3395         ;;
3396     haiku)
3397         prefix_default="/boot/common"
3398         network_extralibs="-lnetwork"
3399         host_libs=
3400         ;;
3401     sunos)
3402         SHFLAGS='-shared -Wl,-h,$$(@F)'
3403         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3404         network_extralibs="-lsocket -lnsl"
3405         # When using suncc to build, the Solaris linker will mark
3406         # an executable with each instruction set encountered by
3407         # the Solaris assembler.  As our libraries contain their own
3408         # guards for processor-specific code, instead suppress
3409         # generation of the HWCAPS ELF section on Solaris x86 only.
3410         enabled_all suncc x86 &&
3411             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3412             add_ldflags -Wl,-M,mapfile
3413         nm_default='nm -P -g'
3414         ;;
3415     netbsd)
3416         disable symver
3417         oss_indev_extralibs="-lossaudio"
3418         oss_outdev_extralibs="-lossaudio"
3419         ;;
3420     openbsd|bitrig)
3421         disable symver
3422         SHFLAGS='-shared'
3423         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3424         SLIB_INSTALL_LINKS=
3425         oss_indev_extralibs="-lossaudio"
3426         oss_outdev_extralibs="-lossaudio"
3427         ;;
3428     dragonfly)
3429         disable symver
3430         ;;
3431     freebsd)
3432         ;;
3433     bsd/os)
3434         add_extralibs -lpoll -lgnugetopt
3435         ;;
3436     darwin)
3437         enabled ppc && add_asflags -force_cpusubtype_ALL
3438         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3439         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3440         add_ldflags -Wl,-dynamic,-search_paths_first
3441         SLIBSUF=".dylib"
3442         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3443         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3444         objformat="macho"
3445         enabled x86_64 && objformat="macho64"
3446         enabled_any pic shared ||
3447             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3448         ;;
3449     mingw32*)
3450         if test $target_os = "mingw32ce"; then
3451             disable network
3452         else
3453             target_os=mingw32
3454         fi
3455         LIBTARGET=i386
3456         if enabled x86_64; then
3457             LIBTARGET="i386:x86-64"
3458         elif enabled arm; then
3459             LIBTARGET=arm-wince
3460         fi
3461         check_ldflags -Wl,--nxcompat
3462         check_ldflags -Wl,--dynamicbase
3463         shlibdir_default="$bindir_default"
3464         SLIBPREF=""
3465         SLIBSUF=".dll"
3466         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3467         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3468         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3469         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3470         SLIB_INSTALL_LINKS=
3471         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3472         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3473         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3474         objformat="win32"
3475         dlltool="${cross_prefix}dlltool"
3476         ranlib=:
3477         enable dos_paths
3478         ;;
3479     win32|win64)
3480         disable symver
3481         if enabled shared; then
3482             # Link to the import library instead of the normal static library
3483             # for shared libs.
3484             LD_LIB='%.lib'
3485             # Cannot build both shared and static libs with MSVC or icl.
3486             disable static
3487         fi
3488         shlibdir_default="$bindir_default"
3489         SLIBPREF=""
3490         SLIBSUF=".dll"
3491         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3492         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3493         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3494         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3495         SLIB_INSTALL_LINKS=
3496         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3497         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3498         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3499         objformat="win32"
3500         ranlib=:
3501         enable dos_paths
3502         ;;
3503     cygwin*)
3504         target_os=cygwin
3505         shlibdir_default="$bindir_default"
3506         SLIBPREF="cyg"
3507         SLIBSUF=".dll"
3508         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3509         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3510         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3511         SLIB_INSTALL_LINKS=
3512         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3513         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3514         objformat="win32"
3515         enable dos_paths
3516         ;;
3517     *-dos|freedos|opendos)
3518         network_extralibs="-lsocket"
3519         objformat="coff"
3520         enable dos_paths
3521         add_cppflags -U__STRICT_ANSI__
3522         ;;
3523     linux)
3524         enable dv1394
3525         ;;
3526     irix*)
3527         target_os=irix
3528         ranlib="echo ignoring ranlib"
3529         ;;
3530     os/2*)
3531         ln_s="cp -f"
3532         objformat="aout"
3533         add_cppflags -D_GNU_SOURCE
3534         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3535         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3536         LIBSUF="_s.a"
3537         SLIBPREF=""
3538         SLIBSUF=".dll"
3539         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3540         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3541         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3542             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3543             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3544             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3545             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3546             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3547         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3548             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3549         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3550         enable dos_paths
3551         ;;
3552     gnu/kfreebsd)
3553         add_cppflags -D_BSD_SOURCE
3554         ;;
3555     gnu)
3556         ;;
3557     qnx)
3558         add_cppflags -D_QNX_SOURCE
3559         network_extralibs="-lsocket"
3560         ;;
3561     symbian)
3562         SLIBSUF=".dll"
3563         enable dos_paths
3564         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3565         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3566         add_ldflags -Wl,--target1-abs,--no-undefined \
3567                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3568                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3569         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3570                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3571                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3572         ;;
3573     osf1)
3574         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3575         ;;
3576     minix)
3577         ;;
3578     plan9)
3579         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3580                      -D_REENTRANT_SOURCE        \
3581                      -D_RESEARCH_SOURCE         \
3582                      -DFD_SETSIZE=96            \
3583                      -DHAVE_SOCK_OPTS
3584         add_compat strtod.o strtod=avpriv_strtod
3585         network_extralibs='-lbsd'
3586         exeobjs=compat/plan9/main.o
3587         cp_f='cp'
3588         ;;
3589     none)
3590         ;;
3591     *)
3592         die "Unknown OS '$target_os'."
3593         ;;
3594 esac
3595
3596 # determine libc flavour
3597
3598 probe_libc(){
3599     pfx=$1
3600     pfx_no_=${pfx%_}
3601     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3602     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3603         eval ${pfx}libc_type=uclibc
3604         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3605     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3606         eval ${pfx}libc_type=glibc
3607         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3608     # MinGW headers can be installed on Cygwin, so check for newlib first.
3609     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3610         eval ${pfx}libc_type=newlib
3611         add_${pfx}cppflags -U__STRICT_ANSI__
3612     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3613     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3614         eval ${pfx}libc_type=mingw64
3615         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3616         eval test \$${pfx_no_}cc_type = "gcc" &&
3617             add_${pfx}cppflags -D__printf__=__gnu_printf__
3618     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3619          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3620         eval ${pfx}libc_type=mingw32
3621         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3622             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3623             die "ERROR: MinGW32 runtime version must be >= 3.15."
3624         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3625         eval test \$${pfx_no_}cc_type = "gcc" &&
3626             add_${pfx}cppflags -D__printf__=__gnu_printf__
3627     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3628         eval ${pfx}libc_type=msvcrt
3629         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3630         # 0x601 by default unless something else is set by the user.
3631         # This can easily lead to us detecting functions only present
3632         # in such new versions and producing binaries requiring windows 7.0.
3633         # Therefore explicitly set the default to XP unless the user has
3634         # set something else on the command line.
3635         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3636             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3637     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3638         eval ${pfx}libc_type=klibc
3639     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3640         eval ${pfx}libc_type=bionic
3641     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3642         eval ${pfx}libc_type=solaris
3643         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3644     fi
3645 }
3646
3647 probe_libc
3648 test -n "$libc_type" && enable libc_$libc_type
3649 probe_libc host_
3650 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3651
3652 case $libc_type in
3653     bionic)
3654         add_compat strtod.o strtod=avpriv_strtod
3655         ;;
3656     msvcrt)
3657         add_compat strtod.o strtod=avpriv_strtod
3658         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3659                                      _snprintf=avpriv_snprintf  \
3660                                      vsnprintf=avpriv_vsnprintf
3661         ;;
3662 esac
3663
3664 # hacks for compiler/libc/os combinations
3665
3666 if enabled_all tms470 libc_glibc; then
3667     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3668     add_cppflags -D__USER_LABEL_PREFIX__=
3669     add_cppflags -D__builtin_memset=memset
3670     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3671     add_cflags   -pds=48    # incompatible redefinition of macro
3672 fi
3673
3674 if enabled_all ccc libc_glibc; then
3675     add_ldflags -Wl,-z,now  # calls to libots crash without this
3676 fi
3677
3678 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3679     add_cppflags '-I\$(SRC_PATH)/compat/float'
3680
3681 esc(){
3682     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3683 }
3684
3685 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3686
3687 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3688
3689 set_default $PATHS_LIST
3690 set_default nm
3691
3692 # we need to build at least one lib type
3693 if ! enabled_any static shared; then
3694     cat <<EOF
3695 At least one library type must be built.
3696 Specify --enable-static to build the static libraries or --enable-shared to
3697 build the shared libraries as well. To only build the shared libraries specify
3698 --disable-static in addition to --enable-shared.
3699 EOF
3700     exit 1;
3701 fi
3702
3703 die_license_disabled() {
3704     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3705 }
3706
3707 die_license_disabled gpl libcdio
3708 die_license_disabled gpl libx264
3709 die_license_disabled gpl libx265
3710 die_license_disabled gpl libxavs
3711 die_license_disabled gpl libxvid
3712 die_license_disabled gpl x11grab
3713
3714 die_license_disabled nonfree libfaac
3715 die_license_disabled nonfree libfdk_aac
3716 die_license_disabled nonfree openssl
3717
3718 die_license_disabled version3 libopencore_amrnb
3719 die_license_disabled version3 libopencore_amrwb
3720 die_license_disabled version3 libvo_aacenc
3721 die_license_disabled version3 libvo_amrwbenc
3722
3723 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3724
3725 disabled optimizations || check_cflags -fomit-frame-pointer
3726
3727 enable_weak_pic() {
3728     disabled pic && return
3729     enable pic
3730     add_cppflags -DPIC
3731     case "$target_os" in
3732     mingw*|cygwin*)
3733         ;;
3734     *)
3735         add_cflags -fPIC
3736         ;;
3737     esac
3738     add_asflags  -fPIC
3739 }
3740
3741 enabled pic && enable_weak_pic
3742
3743 check_cc <<EOF || die "Symbol mangling check failed."
3744 int ff_extern;
3745 EOF
3746 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3747 extern_prefix=${sym%%ff_extern*}
3748
3749 check_cc <<EOF && enable_weak inline_asm
3750 void foo(void) { __asm__ volatile ("" ::); }
3751 EOF
3752
3753 _restrict=
3754 for restrict_keyword in restrict __restrict__ __restrict; do
3755     check_cc <<EOF && _restrict=$restrict_keyword && break
3756 void foo(char * $restrict_keyword p);
3757 EOF
3758 done
3759
3760 check_cc <<EOF && enable pragma_deprecated
3761 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3762 EOF
3763
3764 check_cc <<EOF && enable attribute_packed
3765 struct { int x; } __attribute__((packed)) x;
3766 EOF
3767
3768 check_cc <<EOF && enable attribute_may_alias
3769 union { int x; } __attribute__((may_alias)) x;
3770 EOF
3771
3772 check_cc <<EOF || die "endian test failed"
3773 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3774 EOF
3775 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3776
3777 check_gas() {
3778     log "check_gas using '$as' as AS"
3779     # :vararg is used on aarch64, arm and ppc altivec
3780     check_as <<EOF || return 1
3781 .macro m n, y:vararg=0
3782 \n: .int \y
3783 .endm
3784 m x
3785 EOF
3786     # .altmacro is only used in arm asm
3787     ! enabled arm || check_as <<EOF || return 1
3788 .altmacro
3789 EOF
3790     enable gnu_as
3791     return 0
3792 }
3793
3794 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3795     nogas=:
3796     enabled_any arm aarch64 && nogas=die
3797     enabled_all ppc altivec && nogas=warn
3798     as_noop=-v
3799
3800     case $as_type in
3801         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3802         gcc)  gaspp_as_type=gas ;;
3803         *)    gaspp_as_type=$as_type ;;
3804     esac
3805
3806     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3807
3808     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3809         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3810
3811     if ! check_gas ; then
3812         as=${gas:=$as}
3813         check_gas || \
3814             $nogas "GNU assembler not found, install/update gas-preprocessor"
3815     fi
3816
3817     check_as <<EOF && enable as_func
3818 .func test
3819 .endfunc
3820 EOF
3821 fi
3822
3823 check_inline_asm inline_asm_labels '"1:\n"'
3824
3825 if enabled aarch64; then
3826     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3827     # internal assembler in clang 3.3 does not support this instruction
3828     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3829     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3830
3831     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3832
3833 elif enabled alpha; then
3834
3835     check_cflags -mieee
3836
3837 elif enabled arm; then
3838
3839     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3840     enabled thumb && check_cflags -mthumb || check_cflags -marm
3841
3842     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3843         enable vfp_args
3844     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3845         case "${cross_prefix:-$cc}" in
3846             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3847             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3848 __asm__ (".eabi_attribute 28, 1");
3849 int main(void) { return 0; }
3850 EOF
3851         esac
3852         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3853     fi
3854
3855     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3856     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3857     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3858     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3859     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3860     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3861
3862     [ $target_os = linux ] || [ $target_os = android ] ||
3863         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3864             $ARCH_EXT_LIST_ARM
3865
3866     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3867
3868     check_as <<EOF && enable as_dn_directive
3869 ra .dn d0.i16
3870 .unreq ra
3871 EOF
3872
3873     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3874
3875 elif enabled mips; then
3876
3877     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3878
3879 elif enabled parisc; then
3880
3881     if enabled gcc; then
3882         case $($cc -dumpversion) in
3883             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3884         esac
3885     fi
3886
3887 elif enabled ppc; then
3888
3889     enable local_aligned_8 local_aligned_16
3890
3891     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3892     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3893     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3894     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3895
3896     # AltiVec flags: The FSF version of GCC differs from the Apple version
3897     if enabled altivec; then
3898         check_cflags -maltivec -mabi=altivec &&
3899         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3900         check_cflags -faltivec
3901
3902         # check if our compiler supports Motorola AltiVec C API
3903         check_cc <<EOF || disable altivec
3904 $inc_altivec_h
3905 int main(void) {
3906     vector signed int v1 = (vector signed int) { 0 };
3907     vector signed int v2 = (vector signed int) { 1 };
3908     v1 = vec_add(v1, v2);
3909     return 0;
3910 }
3911 EOF
3912
3913         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3914     fi
3915
3916 elif enabled x86; then
3917
3918     check_builtin rdtsc    intrin.h   "__rdtsc()"
3919     check_builtin mm_empty mmintrin.h "_mm_empty()"
3920
3921     enable local_aligned_8 local_aligned_16
3922
3923     # check whether EBP is available on x86
3924     # As 'i' is stored on the stack, this program will crash
3925     # if the base pointer is used to access it because the
3926     # base pointer is cleared in the inline assembly code.
3927     check_exec_crash <<EOF && enable ebp_available
3928 volatile int i=0;
3929 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3930 return i;
3931 EOF
3932
3933     # check whether EBX is available on x86
3934     check_inline_asm ebx_available '""::"b"(0)' &&
3935         check_inline_asm ebx_available '"":::"%ebx"'
3936
3937     # check whether xmm clobbers are supported
3938     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3939
3940     # check whether binutils is new enough to compile SSSE3/MMXEXT
3941     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3942     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3943
3944     if ! disabled_any asm mmx yasm; then
3945         if check_cmd $yasmexe --version; then
3946             enabled x86_64 && yasm_extra="-m amd64"
3947             yasm_debug="-g dwarf2"
3948         elif check_cmd nasm -v; then
3949             yasmexe=nasm
3950             yasm_debug="-g -F dwarf"
3951             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3952         fi
3953
3954         YASMFLAGS="-f $objformat $yasm_extra"
3955         enabled pic               && append YASMFLAGS "-DPIC"
3956         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3957         case "$objformat" in
3958             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3959         esac
3960
3961         check_yasm "movbe ecx, [5]" && enable yasm ||
3962             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3963         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3964         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3965         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3966         check_yasm "CPU amdnop" || disable cpunop
3967     fi
3968
3969     case "$cpu" in
3970         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3971             disable fast_clz
3972         ;;
3973     esac
3974
3975 fi
3976
3977 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
3978
3979 check_ldflags -Wl,--as-needed
3980
3981 if check_func dlopen; then
3982     ldl=
3983 elif check_func dlopen -ldl; then
3984     ldl=-ldl
3985 fi
3986
3987 if ! disabled network; then
3988     check_func getaddrinfo $network_extralibs
3989     check_func getservbyport $network_extralibs
3990     check_func inet_aton $network_extralibs
3991
3992     check_type netdb.h "struct addrinfo"
3993     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3994     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3995     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3996     check_type poll.h "struct pollfd"
3997     check_type netinet/sctp.h "struct sctp_event_subscribe"
3998     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3999     check_type netinet/in.h "struct sockaddr_in6"
4000     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4001     check_type "sys/types.h sys/socket.h" socklen_t
4002
4003     # Prefer arpa/inet.h over winsock2
4004     if check_header arpa/inet.h ; then
4005         check_func closesocket
4006     elif check_header winsock2.h ; then
4007         check_func_headers winsock2.h closesocket -lws2 &&
4008             network_extralibs="-lws2" ||
4009         { check_func_headers winsock2.h closesocket -lws2_32 &&
4010             network_extralibs="-lws2_32"; } || disable winsock2_h network
4011         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4012
4013         check_type ws2tcpip.h socklen_t
4014         check_type ws2tcpip.h "struct addrinfo"
4015         check_type ws2tcpip.h "struct group_source_req"
4016         check_type ws2tcpip.h "struct ip_mreq_source"
4017         check_type ws2tcpip.h "struct ipv6_mreq"
4018         check_type winsock2.h "struct pollfd"
4019         check_struct winsock2.h "struct sockaddr" sa_len
4020         check_type ws2tcpip.h "struct sockaddr_in6"
4021         check_type ws2tcpip.h "struct sockaddr_storage"
4022     else
4023         disable network
4024     fi
4025 fi
4026
4027 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4028 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4029 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4030 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4031
4032 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4033 check_func  ${malloc_prefix}memalign            && enable memalign
4034 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4035
4036 check_func  fcntl
4037 check_func  fork
4038 check_func  gethrtime
4039 check_func  getopt
4040 check_func  getrusage
4041 check_func  gettimeofday
4042 check_func  isatty
4043 check_func  localtime_r
4044 check_func  mach_absolute_time
4045 check_func  mkstemp
4046 check_func  mmap
4047 check_func  mprotect
4048 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4049 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4050 check_func  sched_getaffinity
4051 check_func  setrlimit
4052 check_func  strerror_r
4053 check_func  strptime
4054 check_func  sysconf
4055 check_func  sysctl
4056 check_func  usleep
4057
4058 check_func_headers io.h setmode
4059 check_func_headers stdlib.h getenv
4060
4061 check_func_headers windows.h CoTaskMemFree -lole32
4062 check_func_headers windows.h GetProcessAffinityMask
4063 check_func_headers windows.h GetProcessTimes
4064 check_func_headers windows.h GetSystemTimeAsFileTime
4065 check_func_headers windows.h MapViewOfFile
4066 check_func_headers windows.h SetConsoleTextAttribute
4067 check_func_headers windows.h Sleep
4068 check_func_headers windows.h VirtualAlloc
4069
4070 check_header direct.h
4071 check_header dlfcn.h
4072 check_header dxva.h
4073 check_header dxva2api.h
4074 check_header io.h
4075 check_header mach/mach_time.h
4076 check_header malloc.h
4077 check_header poll.h
4078 check_header sys/mman.h
4079 check_header sys/param.h
4080 check_header sys/resource.h
4081 check_header sys/select.h
4082 check_header sys/time.h
4083 check_header sys/un.h
4084 check_header unistd.h
4085 check_header vdpau/vdpau.h
4086 check_header vdpau/vdpau_x11.h
4087 check_header VideoDecodeAcceleration/VDADecoder.h
4088 check_header windows.h
4089 check_header X11/extensions/XvMClib.h
4090
4091 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4092 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4093 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4094
4095 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4096
4097 if ! disabled w32threads && ! enabled pthreads; then
4098     check_func_headers "windows.h process.h" _beginthreadex &&
4099         enable w32threads || disable w32threads
4100 fi
4101
4102 # check for some common methods of building with pthread support
4103 # do this before the optional library checks as some of them require pthreads
4104 if ! disabled pthreads && ! enabled w32threads; then
4105     enable pthreads
4106     if check_func pthread_join -pthread; then
4107         add_cflags -pthread
4108         add_extralibs -pthread
4109     elif check_func pthread_join -pthreads; then
4110         add_cflags -pthreads
4111         add_extralibs -pthreads
4112     elif check_func pthread_join -lpthreadGC2; then
4113         add_extralibs -lpthreadGC2
4114     elif check_lib pthread.h pthread_join -lpthread; then
4115         :
4116     elif ! check_func pthread_join; then
4117         disable pthreads
4118     fi
4119 fi
4120
4121 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4122 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4123
4124 check_lib math.h sin -lm && LIBM="-lm"
4125 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4126
4127 atan2f_args=2
4128 ldexpf_args=2
4129 powf_args=2
4130
4131 for func in $MATH_FUNCS; do
4132     eval check_mathfunc $func \${${func}_args:-1}
4133 done
4134
4135 # these are off by default, so fail if requested and not available
4136 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4137                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4138                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4139 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4140 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4141 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4142 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4143 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4144 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4145 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4146 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4147                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4148                                done || die "ERROR: libgsm not found"; }
4149 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4150 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4151 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4152 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4153 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4154 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4155                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4156 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4157 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4158 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4159 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4160 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4161 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4162 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4163 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4164 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4165 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4166 enabled libvpx            && {
4167     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4168                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4169     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4170                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4171     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4172     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4173 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4174 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4175 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4176                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4177                                die "ERROR: libx264 version must be >= 0.118."; }
4178 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4179                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4180                                die "ERROR: libx265 version must be >= 17."; }
4181 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4182 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4183 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4184                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4185                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4186                                die "ERROR: openssl not found"; }
4187
4188 if enabled gnutls; then
4189     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4190     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4191 fi
4192
4193 # libdc1394 check
4194 if enabled libdc1394; then
4195     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4196         enable libdc1394_2; } ||
4197     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4198         enable libdc1394_1; } ||
4199     die "ERROR: No version of libdc1394 found "
4200 fi
4201
4202 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4203     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4204     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4205     enable sdl
4206 fi
4207
4208 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4209 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4210
4211 check_header linux/fb.h
4212 check_header linux/videodev2.h
4213 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4214
4215 check_header sys/videoio.h
4216
4217 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4218 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4219 # w32api 3.12 had it defined wrong
4220 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4221
4222 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4223 { check_header dev/bktr/ioctl_meteor.h &&
4224   check_header dev/bktr/ioctl_bt848.h; } ||
4225 { check_header machine/ioctl_meteor.h &&
4226   check_header machine/ioctl_bt848.h; } ||
4227 { check_header dev/video/meteor/ioctl_meteor.h &&
4228   check_header dev/video/bktr/ioctl_bt848.h; } ||
4229 check_header dev/ic/bt8xx.h
4230
4231 check_header sndio.h
4232 check_header sys/soundcard.h
4233 check_header soundcard.h
4234
4235 enabled_any alsa_indev alsa_outdev &&
4236     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4237
4238 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4239     check_func jack_port_get_latency_range -ljack
4240
4241 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4242
4243 if enabled libcdio; then
4244     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4245     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4246 fi
4247
4248 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4249
4250 enabled x11grab                                           &&
4251 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4252 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4253 { enabled xlib || die "ERROR: Xlib not found"; }
4254
4255 enabled vdpau &&
4256     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4257     disable vdpau
4258
4259 enabled vdpau && enabled xlib &&
4260     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4261     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4262     enable vdpau_x11
4263
4264 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4265
4266 # add some useful compiler flags if supported
4267 check_cflags -Wdeclaration-after-statement
4268 check_cflags -Wall
4269 check_cflags -Wdisabled-optimization
4270 check_cflags -Wpointer-arith
4271 check_cflags -Wredundant-decls
4272 check_cflags -Wcast-qual
4273 check_cflags -Wwrite-strings
4274 check_cflags -Wtype-limits
4275 check_cflags -Wundef
4276 check_cflags -Wmissing-prototypes
4277 check_cflags -Wstrict-prototypes
4278 enabled extra_warnings && check_cflags -Winline
4279
4280 check_disable_warning(){
4281     warning_flag=-W${1#-Wno-}
4282     test_cflags $warning_flag && add_cflags $1
4283 }
4284
4285 check_disable_warning -Wno-parentheses
4286 check_disable_warning -Wno-switch
4287 check_disable_warning -Wno-format-zero-length
4288 check_disable_warning -Wno-pointer-sign
4289
4290 # add some linker flags
4291 check_ldflags -Wl,--warn-common
4292 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4293 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4294
4295 # add some strip flags
4296 # -wN '..@*' is more selective than -x, but not available everywhere.
4297 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4298
4299 enabled neon_clobber_test &&
4300     check_ldflags -Wl,--wrap,avcodec_open2              \
4301                   -Wl,--wrap,avcodec_decode_audio4      \
4302                   -Wl,--wrap,avcodec_decode_video2      \
4303                   -Wl,--wrap,avcodec_decode_subtitle2   \
4304                   -Wl,--wrap,avcodec_encode_audio2      \
4305                   -Wl,--wrap,avcodec_encode_video2      \
4306                   -Wl,--wrap,avcodec_encode_subtitle    \
4307                   -Wl,--wrap,avresample_convert ||
4308     disable neon_clobber_test
4309
4310 enabled xmm_clobber_test &&
4311     check_ldflags -Wl,--wrap,avcodec_open2              \
4312                   -Wl,--wrap,avcodec_decode_audio4      \
4313                   -Wl,--wrap,avcodec_decode_video2      \
4314                   -Wl,--wrap,avcodec_decode_subtitle2   \
4315                   -Wl,--wrap,avcodec_encode_audio2      \
4316                   -Wl,--wrap,avcodec_encode_video2      \
4317                   -Wl,--wrap,avcodec_encode_subtitle    \
4318                   -Wl,--wrap,avresample_convert         \
4319                   -Wl,--wrap,sws_scale ||
4320     disable xmm_clobber_test
4321
4322 echo "X{};" > $TMPV
4323 if test_ldflags -Wl,--version-script,$TMPV; then
4324     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4325     check_cc <<EOF && enable symver_asm_label
4326 void ff_foo(void) __asm__ ("av_foo@VERSION");
4327 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4328 EOF
4329     check_cc <<EOF && enable symver_gnu_asm
4330 __asm__(".symver ff_foo,av_foo@VERSION");
4331 void ff_foo(void) {}
4332 EOF
4333 fi
4334
4335 if [ -z "$optflags" ]; then
4336     if enabled small; then
4337         optflags=$cflags_size
4338     elif enabled optimizations; then
4339         optflags=$cflags_speed
4340     else
4341         optflags=$cflags_noopt
4342     fi
4343 fi
4344
4345 check_optflags(){
4346     check_cflags "$@"
4347     enabled lto && check_ldflags "$@"
4348 }
4349
4350
4351 if enabled lto; then
4352     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4353     check_cflags  -flto
4354     check_ldflags -flto $cpuflags
4355 fi
4356
4357 check_optflags $optflags
4358 check_optflags -fno-math-errno
4359 check_optflags -fno-signed-zeros
4360
4361 if enabled icc; then
4362     # Just warnings, no remarks
4363     check_cflags -w1
4364     # -wd: Disable following warnings
4365     # 144, 167, 556: -Wno-pointer-sign
4366     # 1292: attribute "foo" ignored
4367     # 1419: external declaration in primary source file
4368     # 10006: ignoring unknown option -fno-signed-zeros
4369     # 10148: ignoring unknown option -Wno-parentheses
4370     # 10156: ignoring option '-W'; no argument required
4371     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4372     # 11030: Warning unknown option --as-needed
4373     # 10156: ignoring option '-export'; no argument required
4374     check_ldflags -wd10156,11030
4375     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4376     enable ebp_available
4377     if enabled x86_32; then
4378         icc_version=$($cc -dumpversion)
4379         test ${icc_version%%.*} -ge 11 &&
4380             check_cflags -falign-stack=maintain-16-byte ||
4381             disable aligned_stack
4382     fi
4383 elif enabled ccc; then
4384     # disable some annoying warnings
4385     add_cflags -msg_disable bitnotint
4386     add_cflags -msg_disable mixfuncvoid
4387     add_cflags -msg_disable nonstandcast
4388     add_cflags -msg_disable unsupieee
4389 elif enabled gcc; then
4390     check_optflags -fno-tree-vectorize
4391     check_cflags -Werror=implicit-function-declaration
4392     check_cflags -Werror=missing-prototypes
4393     check_cflags -Werror=return-type
4394     check_cflags -Werror=declaration-after-statement
4395     check_cflags -Werror=vla
4396     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4397 elif enabled llvm_gcc; then
4398     check_cflags -mllvm -stack-alignment=16
4399 elif enabled clang; then
4400     check_cflags -mllvm -stack-alignment=16
4401     check_cflags -Qunused-arguments
4402     check_cflags -Werror=implicit-function-declaration
4403     check_cflags -Werror=missing-prototypes
4404     check_cflags -Werror=return-type
4405 elif enabled cparser; then
4406     add_cflags -Wno-missing-variable-declarations
4407     add_cflags -Wno-empty-statement
4408 elif enabled armcc; then
4409     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4410     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4411     # 2523: use of inline assembly is deprecated
4412     add_cflags -W${armcc_opt},--diag_suppress=2523
4413     add_cflags -W${armcc_opt},--diag_suppress=1207
4414     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4415     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4416     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4417     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4418 elif enabled tms470; then
4419     add_cflags -pds=824 -pds=837
4420     disable inline_asm
4421 elif enabled pathscale; then
4422     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4423 elif enabled_any msvc icl; then
4424     enabled x86_32 && disable aligned_stack
4425     enabled_all x86_32 debug && add_cflags -Oy-
4426     enabled debug && add_ldflags -debug
4427     enable pragma_deprecated
4428     if enabled icl; then
4429         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4430         # (correctly) on icl 13.x.
4431         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4432             add_cflags -Qansi-alias
4433         # icl will pass the inline asm tests but inline asm is currently
4434         # not supported (build will fail)
4435         disable inline_asm
4436     fi
4437 fi
4438
4439 case $as_type in
4440     clang)
4441         add_asflags -Qunused-arguments
4442     ;;
4443 esac
4444
4445 case $ld_type in
4446     clang)
4447         check_ldflags -Qunused-arguments
4448     ;;
4449 esac
4450
4451 case $target_os in
4452     osf1)
4453         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4454     ;;
4455     plan9)
4456         add_cppflags -Dmain=plan9_main
4457     ;;
4458 esac
4459
4460 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4461
4462 check_deps $CONFIG_LIST       \
4463            $CONFIG_EXTRA      \
4464            $HAVE_LIST         \
4465            $ALL_COMPONENTS    \
4466
4467 enabled_all dxva2 CoTaskMemFree &&
4468     prepend avconv_libs $($ldflags_filter "-lole32") &&
4469     enable dxva2_lib
4470
4471 ! enabled_any memalign posix_memalign aligned_malloc &&
4472     enabled $simd_align_16 && enable memalign_hack
4473
4474 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
4475
4476 for thread in $THREADS_LIST; do
4477     if enabled $thread; then
4478         test -n "$thread_type" &&
4479             die "ERROR: Only one thread type must be selected." ||
4480             thread_type="$thread"
4481     fi
4482 done
4483
4484 enabled zlib && add_cppflags -DZLIB_CONST
4485
4486 # conditional library dependencies, in linking order
4487 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4488 enabled resample_filter && prepend avfilter_deps "avresample"
4489 enabled scale_filter    && prepend avfilter_deps "swscale"
4490
4491 enabled opus_decoder    && prepend avcodec_deps "avresample"
4492
4493 expand_deps(){
4494     lib_deps=${1}_deps
4495     eval "deps=\$$lib_deps"
4496     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4497     unique $lib_deps
4498 }
4499
4500 map 'expand_deps $v' $LIBRARY_LIST
4501
4502 echo "install prefix            $prefix"
4503 echo "source path               $source_path"
4504 echo "C compiler                $cc"
4505 echo "C library                 $libc_type"
4506 if test "$host_cc" != "$cc"; then
4507     echo "host C compiler           $host_cc"
4508     echo "host C library            $host_libc_type"
4509 fi
4510 echo "ARCH                      $arch ($cpu)"
4511 if test "$build_suffix" != ""; then
4512     echo "build suffix              $build_suffix"
4513 fi
4514 if test "$extra_version" != ""; then
4515     echo "version string suffix     $extra_version"
4516 fi
4517 echo "big-endian                ${bigendian-no}"
4518 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4519 if enabled x86; then
4520     echo "${yasmexe}                      ${yasm-no}"
4521     echo "MMX enabled               ${mmx-no}"
4522     echo "MMXEXT enabled            ${mmxext-no}"
4523     echo "3DNow! enabled            ${amd3dnow-no}"
4524     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4525     echo "SSE enabled               ${sse-no}"
4526     echo "SSSE3 enabled             ${ssse3-no}"
4527     echo "AVX enabled               ${avx-no}"
4528     echo "XOP enabled               ${xop-no}"
4529     echo "FMA3 enabled              ${fma3-no}"
4530     echo "FMA4 enabled              ${fma4-no}"
4531     echo "i686 features enabled     ${i686-no}"
4532     echo "CMOV is fast              ${fast_cmov-no}"
4533     echo "EBX available             ${ebx_available-no}"
4534     echo "EBP available             ${ebp_available-no}"
4535 fi
4536 if enabled aarch64; then
4537     echo "NEON enabled              ${neon-no}"
4538     echo "VFP enabled               ${vfp-no}"
4539 fi
4540 if enabled arm; then
4541     echo "ARMv5TE enabled           ${armv5te-no}"
4542     echo "ARMv6 enabled             ${armv6-no}"
4543     echo "ARMv6T2 enabled           ${armv6t2-no}"
4544     echo "VFP enabled               ${vfp-no}"
4545     echo "NEON enabled              ${neon-no}"
4546 fi
4547 if enabled ppc; then
4548     echo "AltiVec enabled           ${altivec-no}"
4549     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4550     echo "dcbzl available           ${dcbzl-no}"
4551 fi
4552 echo "debug symbols             ${debug-no}"
4553 echo "optimize for size         ${small-no}"
4554 echo "optimizations             ${optimizations-no}"
4555 echo "static                    ${static-no}"
4556 echo "shared                    ${shared-no}"
4557 echo "new filter support        ${avfilter-no}"
4558 echo "network support           ${network-no}"
4559 echo "threading support         ${thread_type-no}"
4560 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4561 echo "SDL support               ${sdl-no}"
4562 test -n "$random_seed" &&
4563     echo "random seed               ${random_seed}"
4564 echo
4565
4566 echo "External libraries:"
4567 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4568 echo
4569
4570 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4571     echo "Enabled ${type}s:"
4572     eval list=\$$(toupper $type)_LIST
4573     print_enabled '_*' $list | print_3_columns
4574     echo
4575 done
4576
4577 license="LGPL version 2.1 or later"
4578 if enabled nonfree; then
4579     license="nonfree and unredistributable"
4580 elif enabled gplv3; then
4581     license="GPL version 3 or later"
4582 elif enabled lgplv3; then
4583     license="LGPL version 3 or later"
4584 elif enabled gpl; then
4585     license="GPL version 2 or later"
4586 fi
4587
4588 echo "License: $license"
4589
4590 echo "Creating config.mak and config.h..."
4591
4592 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4593
4594 config_files="$TMPH config.mak"
4595
4596 cat > config.mak <<EOF
4597 # Automatically generated by configure - do not modify!
4598 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4599 prefix=$prefix
4600 LIBDIR=\$(DESTDIR)$libdir
4601 SHLIBDIR=\$(DESTDIR)$shlibdir
4602 INCDIR=\$(DESTDIR)$incdir
4603 BINDIR=\$(DESTDIR)$bindir
4604 DATADIR=\$(DESTDIR)$datadir
4605 DOCDIR=\$(DESTDIR)$docdir
4606 MANDIR=\$(DESTDIR)$mandir
4607 SRC_PATH=$source_path
4608 CC_IDENT=$cc_ident
4609 ARCH=$arch
4610 INTRINSICS=$intrinsics
4611 CC=$cc
4612 AS=$as
4613 LD=$ld
4614 DEPCC=$dep_cc
4615 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4616 DEPAS=$as
4617 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4618 YASM=$yasmexe
4619 DEPYASM=$yasmexe
4620 AR=$ar
4621 ARFLAGS=$arflags
4622 AR_O=$ar_o
4623 RANLIB=$ranlib
4624 STRIP=$strip
4625 LN_S=$ln_s
4626 CPPFLAGS=$CPPFLAGS
4627 CFLAGS=$CFLAGS
4628 ASFLAGS=$ASFLAGS
4629 AS_C=$AS_C
4630 AS_O=$AS_O
4631 CC_C=$CC_C
4632 CC_E=$CC_E
4633 CC_O=$CC_O
4634 LD_O=$LD_O
4635 LD_LIB=$LD_LIB
4636 LD_PATH=$LD_PATH
4637 DLLTOOL=$dlltool
4638 LDFLAGS=$LDFLAGS
4639 LDEXEFLAGS=$LDEXEFLAGS
4640 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4641 STRIPFLAGS=$STRIPFLAGS
4642 YASMFLAGS=$YASMFLAGS
4643 BUILDSUF=$build_suffix
4644 FULLNAME=$FULLNAME
4645 LIBPREF=$LIBPREF
4646 LIBSUF=$LIBSUF
4647 LIBNAME=$LIBNAME
4648 SLIBPREF=$SLIBPREF
4649 SLIBSUF=$SLIBSUF
4650 EXESUF=$EXESUF
4651 EXTRA_VERSION=$extra_version
4652 CCDEP=$CCDEP
4653 CCDEP_FLAGS=$CCDEP_FLAGS
4654 ASDEP=$ASDEP
4655 ASDEP_FLAGS=$ASDEP_FLAGS
4656 CC_DEPFLAGS=$CC_DEPFLAGS
4657 AS_DEPFLAGS=$AS_DEPFLAGS
4658 HOSTCC=$host_cc
4659 HOSTLD=$host_ld
4660 HOSTCFLAGS=$host_cflags
4661 HOSTCPPFLAGS=$host_cppflags
4662 HOSTEXESUF=$HOSTEXESUF
4663 HOSTLDFLAGS=$host_ldflags
4664 HOSTLIBS=$host_libs
4665 DEPHOSTCC=$host_cc
4666 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4667 HOSTCCDEP=$HOSTCCDEP
4668 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4669 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4670 HOSTCC_C=$HOSTCC_C
4671 HOSTCC_O=$HOSTCC_O
4672 HOSTLD_O=$HOSTLD_O
4673 TARGET_EXEC=$target_exec $target_exec_args
4674 TARGET_PATH=$target_path
4675 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4676 CFLAGS-avplay=$sdl_cflags
4677 ZLIB=$($ldflags_filter -lz)
4678 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4679 EXTRALIBS=$extralibs
4680 COMPAT_OBJS=$compat_objs
4681 EXEOBJS=$exeobjs
4682 INSTALL=install
4683 LIBTARGET=${LIBTARGET}
4684 SLIBNAME=${SLIBNAME}
4685 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4686 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4687 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4688 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4689 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4690 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4691 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4692 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4693 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4694 EOF
4695
4696 get_version(){
4697     lcname=lib${1}
4698     name=$(toupper $lcname)
4699     file=$source_path/$lcname/version.h
4700     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4701     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4702     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4703     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4704     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4705 }
4706
4707 map 'get_version $v' $LIBRARY_LIST
4708
4709 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4710
4711 print_program_libs(){
4712     eval "program_libs=\$${1}_libs"
4713     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4714 }
4715
4716 map 'print_program_libs $v' $PROGRAM_LIST
4717
4718 cat > $TMPH <<EOF
4719 /* Automatically generated by configure - do not modify! */
4720 #ifndef LIBAV_CONFIG_H
4721 #define LIBAV_CONFIG_H
4722 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4723 #define LIBAV_LICENSE "$(c_escape $license)"
4724 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4725 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4726 #define restrict $_restrict
4727 #define EXTERN_PREFIX "${extern_prefix}"
4728 #define EXTERN_ASM ${extern_prefix}
4729 #define SLIBSUF "$SLIBSUF"
4730 EOF
4731
4732 test -n "$malloc_prefix" &&
4733     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4734
4735 if enabled yasm; then
4736     append config_files $TMPASM
4737     printf '' >$TMPASM
4738 fi
4739
4740 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4741
4742 print_config ARCH_   "$config_files" $ARCH_LIST
4743 print_config HAVE_   "$config_files" $HAVE_LIST
4744 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4745                                      $CONFIG_EXTRA      \
4746                                      $ALL_COMPONENTS    \
4747
4748 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4749
4750 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4751 cp_if_changed $TMPH config.h
4752 touch .config
4753
4754 enabled yasm && cp_if_changed $TMPASM config.asm
4755
4756 cat > $TMPH <<EOF
4757 /* Generated by ffconf */
4758 #ifndef AVUTIL_AVCONFIG_H
4759 #define AVUTIL_AVCONFIG_H
4760 EOF
4761
4762 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4763
4764 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4765
4766 cp_if_changed $TMPH libavutil/avconfig.h
4767
4768 test -n "$WARNINGS" && printf "\n$WARNINGS"
4769
4770 # build pkg-config files
4771
4772 lib_version(){
4773     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4774 }
4775
4776 pkgconfig_generate(){
4777     name=$1
4778     shortname=${name#lib}${build_suffix}
4779     comment=$2
4780     version=$3
4781     libs=$4
4782     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
4783     requires=${requires%, }
4784     enabled ${name#lib} || return 0
4785     mkdir -p $name
4786     cat <<EOF > $name/$name.pc
4787 prefix=$prefix
4788 exec_prefix=\${prefix}
4789 libdir=$libdir
4790 includedir=$incdir
4791
4792 Name: $name
4793 Description: $comment
4794 Version: $version
4795 Requires: $(enabled shared || echo $requires)
4796 Requires.private: $(enabled shared && echo $requires)
4797 Conflicts:
4798 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4799 Libs.private: $(enabled shared && echo $libs)
4800 Cflags: -I\${includedir}
4801 EOF
4802     cat <<EOF > $name/$name-uninstalled.pc
4803 prefix=
4804 exec_prefix=
4805 libdir=\${pcfiledir}
4806 includedir=${source_path}
4807
4808 Name: $name
4809 Description: $comment
4810 Version: $version
4811 Requires: $requires
4812 Conflicts:
4813 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4814 Cflags: -I\${includedir}
4815 EOF
4816 }
4817
4818 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4819 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
4820 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
4821 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
4822 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
4823 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$LIBM"
4824 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"