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     as_object_arch
1481     asm_mod_q
1482     attribute_may_alias
1483     attribute_packed
1484     ebp_available
1485     ebx_available
1486     gnu_as
1487     ibm_asm
1488     inline_asm_labels
1489     pragma_deprecated
1490     symver_asm_label
1491     symver_gnu_asm
1492     vfp_args
1493     xform_asm
1494     xmm_clobbers
1495 "
1496
1497 TYPES_LIST="
1498     socklen_t
1499     struct_addrinfo
1500     struct_group_source_req
1501     struct_ip_mreq_source
1502     struct_ipv6_mreq
1503     struct_pollfd
1504     struct_rusage_ru_maxrss
1505     struct_sockaddr_in6
1506     struct_sockaddr_sa_len
1507     struct_sockaddr_storage
1508     struct_v4l2_frmivalenum_discrete
1509 "
1510
1511 HAVE_LIST="
1512     $ARCH_EXT_LIST
1513     $(add_suffix _external $ARCH_EXT_LIST)
1514     $(add_suffix _inline   $ARCH_EXT_LIST)
1515     $ARCH_FEATURES
1516     $ATOMICS_LIST
1517     $BUILTIN_LIST
1518     $HAVE_LIST_CMDLINE
1519     $HAVE_LIST_PUB
1520     $HEADERS_LIST
1521     $INTRINSICS_LIST
1522     $MATH_FUNCS
1523     $SYSTEM_FUNCS
1524     $THREADS_LIST
1525     $TOOLCHAIN_FEATURES
1526     $TYPES_LIST
1527     atomics_native
1528     dos_paths
1529     dxva2_lib
1530     libc_msvcrt
1531     libdc1394_1
1532     libdc1394_2
1533     sdl
1534     threads
1535     vdpau_x11
1536     xlib
1537 "
1538
1539 # options emitted with CONFIG_ prefix but not available on the command line
1540 CONFIG_EXTRA="
1541     aandcttables
1542     ac3dsp
1543     audio_frame_queue
1544     audiodsp
1545     blockdsp
1546     bswapdsp
1547     cabac
1548     dvprofile
1549     fdctdsp
1550     gcrypt
1551     golomb
1552     gplv3
1553     h263dsp
1554     h264chroma
1555     h264dsp
1556     h264pred
1557     h264qpel
1558     hpeldsp
1559     huffman
1560     huffyuvdsp
1561     huffyuvencdsp
1562     idctdsp
1563     iirfilter
1564     intrax8
1565     lgplv3
1566     lpc
1567     me_cmp
1568     mpeg_er
1569     mpegaudio
1570     mpegaudiodsp
1571     mpegvideo
1572     mpegvideoenc
1573     nettle
1574     pixblockdsp
1575     qpeldsp
1576     rangecoder
1577     riffdec
1578     riffenc
1579     rtpdec
1580     rtpenc_chain
1581     sinewin
1582     startcode
1583     tpeldsp
1584     videodsp
1585     vp3dsp
1586 "
1587
1588 CMDLINE_SELECT="
1589     $ARCH_EXT_LIST
1590     $CONFIG_LIST
1591     $HAVE_LIST_CMDLINE
1592     $THREADS_LIST
1593     asm
1594     cross_compile
1595     debug
1596     extra_warnings
1597     logging
1598     lto
1599     optimizations
1600 "
1601
1602 PATHS_LIST="
1603     bindir
1604     datadir
1605     docdir
1606     incdir
1607     libdir
1608     mandir
1609     prefix
1610     shlibdir
1611 "
1612
1613 CMDLINE_SET="
1614     $PATHS_LIST
1615     ar
1616     arch
1617     as
1618     build_suffix
1619     cc
1620     cpu
1621     cross_prefix
1622     dep_cc
1623     extra_version
1624     host_cc
1625     host_cflags
1626     host_ld
1627     host_ldflags
1628     host_libs
1629     host_os
1630     ld
1631     logfile
1632     malloc_prefix
1633     nm
1634     optflags
1635     pkg_config
1636     pkg_config_flags
1637     random_seed
1638     samples
1639     sysinclude
1640     sysroot
1641     target_exec
1642     target_os
1643     target_path
1644     target_samples
1645     toolchain
1646 "
1647
1648 CMDLINE_APPEND="
1649     extra_cflags
1650     host_cppflags
1651 "
1652
1653 # code dependency declarations
1654
1655 # architecture extensions
1656
1657 armv5te_deps="arm"
1658 armv6_deps="arm"
1659 armv6t2_deps="arm"
1660 armv8_deps="aarch64"
1661 neon_deps_any="aarch64 arm"
1662 intrinsics_neon_deps="neon"
1663 vfp_deps_any="aarch64 arm"
1664 vfpv3_deps="vfp"
1665
1666 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1667
1668 altivec_deps="ppc"
1669 ppc4xx_deps="ppc"
1670
1671 cpunop_deps="i686"
1672 x86_64_select="i686"
1673 x86_64_suggest="fast_cmov"
1674
1675 amd3dnow_deps="mmx"
1676 amd3dnowext_deps="amd3dnow"
1677 i686_deps="x86"
1678 mmx_deps="x86"
1679 mmxext_deps="mmx"
1680 sse_deps="mmxext"
1681 sse2_deps="sse"
1682 sse3_deps="sse2"
1683 ssse3_deps="sse3"
1684 sse4_deps="ssse3"
1685 sse42_deps="sse4"
1686 avx_deps="sse42"
1687 xop_deps="avx"
1688 fma3_deps="avx"
1689 fma4_deps="avx"
1690 avx2_deps="avx"
1691
1692 mmx_external_deps="yasm"
1693 mmx_inline_deps="inline_asm"
1694 mmx_suggest="mmx_external mmx_inline"
1695
1696 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1697     eval dep=\$${ext}_deps
1698     eval ${ext}_external_deps='"${dep}_external"'
1699     eval ${ext}_inline_deps='"${dep}_inline"'
1700     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1701 done
1702
1703 aligned_stack_if_any="aarch64 ppc x86"
1704 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1705 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1706 fast_unaligned_if_any="aarch64 ppc x86"
1707 simd_align_16_if_any="altivec neon sse"
1708
1709 # system capabilities
1710 log2_deps="!libc_msvcrt"
1711
1712 symver_if_any="symver_asm_label symver_gnu_asm"
1713
1714 # threading support
1715 atomics_gcc_if="sync_val_compare_and_swap"
1716 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1717 atomics_win32_if="MemoryBarrier"
1718 atomics_native_if_any="$ATOMICS_LIST"
1719 w32threads_deps="atomics_native"
1720 threads_if_any="$THREADS_LIST"
1721
1722 # subsystems
1723 dct_select="rdft"
1724 error_resilience_select="me_cmp"
1725 intrax8_select="error_resilience"
1726 mdct_select="fft"
1727 rdft_select="fft"
1728 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1729 mpeg_er_select="error_resilience"
1730 mpegaudio_select="mpegaudiodsp"
1731 mpegaudiodsp_select="dct"
1732 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1733 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1734
1735 # decoders / encoders
1736 aac_decoder_select="mdct sinewin"
1737 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1738 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1739 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
1740 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1741 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1742 aic_decoder_select="golomb idctdsp"
1743 alac_encoder_select="lpc"
1744 als_decoder_select="bswapdsp"
1745 amrnb_decoder_select="lsp"
1746 amrwb_decoder_select="lsp"
1747 amv_decoder_select="sp5x_decoder"
1748 ape_decoder_select="bswapdsp"
1749 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1750 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1751 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1752 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1753 atrac1_decoder_select="mdct sinewin"
1754 atrac3_decoder_select="mdct"
1755 atrac3p_decoder_select="mdct sinewin"
1756 bink_decoder_select="blockdsp hpeldsp"
1757 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1758 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1759 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1760 cllc_decoder_select="bswapdsp"
1761 comfortnoise_encoder_select="lpc"
1762 cook_decoder_select="audiodsp mdct sinewin"
1763 cscd_decoder_select="lzo"
1764 cscd_decoder_suggest="zlib"
1765 dca_decoder_select="mdct"
1766 dnxhd_decoder_select="blockdsp idctdsp"
1767 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1768 dvvideo_decoder_select="dvprofile idctdsp"
1769 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1770 dxa_decoder_deps="zlib"
1771 eac3_decoder_select="ac3_decoder"
1772 eac3_encoder_select="ac3_encoder"
1773 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1774 eatgq_decoder_select="aandcttables idctdsp"
1775 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1776 exr_decoder_deps="zlib"
1777 ffv1_decoder_select="golomb rangecoder"
1778 ffv1_encoder_select="rangecoder"
1779 ffvhuff_decoder_select="huffyuv_decoder"
1780 ffvhuff_encoder_select="huffyuv_encoder"
1781 fic_decoder_select="golomb"
1782 flac_decoder_select="golomb"
1783 flac_encoder_select="bswapdsp golomb lpc"
1784 flashsv_decoder_deps="zlib"
1785 flashsv_encoder_deps="zlib"
1786 flashsv2_decoder_deps="zlib"
1787 flv_decoder_select="h263_decoder"
1788 flv_encoder_select="h263_encoder"
1789 fourxm_decoder_select="blockdsp bswapdsp"
1790 fraps_decoder_select="bswapdsp huffman"
1791 g2m_decoder_deps="zlib"
1792 g2m_decoder_select="blockdsp idctdsp"
1793 h261_decoder_select="mpeg_er mpegvideo"
1794 h261_encoder_select="aandcttables mpegvideoenc"
1795 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1796 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1797 h263i_decoder_select="h263_decoder"
1798 h263p_encoder_select="h263_encoder"
1799 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1800 h264_decoder_suggest="error_resilience"
1801 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1802 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1803 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1804 iac_decoder_select="imc_decoder"
1805 imc_decoder_select="bswapdsp fft mdct sinewin"
1806 indeo3_decoder_select="hpeldsp"
1807 interplay_video_decoder_select="hpeldsp"
1808 jpegls_decoder_select="golomb mjpeg_decoder"
1809 jpegls_encoder_select="golomb"
1810 jv_decoder_select="blockdsp"
1811 lagarith_decoder_select="huffyuvdsp"
1812 ljpeg_encoder_select="aandcttables idctdsp"
1813 loco_decoder_select="golomb"
1814 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1815 metasound_decoder_select="lsp mdct sinewin"
1816 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1817 mjpeg_decoder_select="blockdsp hpeldsp idctdsp"
1818 mjpeg_encoder_select="aandcttables mpegvideoenc"
1819 mjpegb_decoder_select="mjpeg_decoder"
1820 mlp_decoder_select="mlp_parser"
1821 motionpixels_decoder_select="bswapdsp"
1822 mp1_decoder_select="mpegaudio"
1823 mp1float_decoder_select="mpegaudio"
1824 mp2_decoder_select="mpegaudio"
1825 mp2float_decoder_select="mpegaudio"
1826 mp3_decoder_select="mpegaudio"
1827 mp3adu_decoder_select="mpegaudio"
1828 mp3adufloat_decoder_select="mpegaudio"
1829 mp3float_decoder_select="mpegaudio"
1830 mp3on4_decoder_select="mpegaudio"
1831 mp3on4float_decoder_select="mpegaudio"
1832 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1833 mpc8_decoder_select="mpegaudiodsp"
1834 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1835 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1836 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1837 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1838 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1839 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1840 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1841 mpeg4_encoder_select="h263_encoder"
1842 msmpeg4v1_decoder_select="h263_decoder"
1843 msmpeg4v2_decoder_select="h263_decoder"
1844 msmpeg4v2_encoder_select="h263_encoder"
1845 msmpeg4v3_decoder_select="h263_decoder"
1846 msmpeg4v3_encoder_select="h263_encoder"
1847 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1848 mxpeg_decoder_select="mjpeg_decoder"
1849 nellymoser_decoder_select="mdct sinewin"
1850 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1851 nuv_decoder_select="idctdsp lzo"
1852 on2avc_decoder_select="mdct"
1853 opus_decoder_deps="avresample"
1854 png_decoder_deps="zlib"
1855 png_encoder_deps="zlib"
1856 png_encoder_select="huffyuvencdsp"
1857 prores_decoder_select="idctdsp"
1858 prores_encoder_select="fdctdsp"
1859 qcelp_decoder_select="lsp"
1860 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1861 ra_144_encoder_select="audio_frame_queue lpc"
1862 ralf_decoder_select="golomb"
1863 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1864 rv10_encoder_select="h263_encoder"
1865 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1866 rv20_encoder_select="h263_encoder"
1867 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1868 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1869 shorten_decoder_select="golomb"
1870 sipr_decoder_select="lsp"
1871 sp5x_decoder_select="mjpeg_decoder"
1872 svq1_decoder_select="hpeldsp"
1873 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1874 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1875 svq3_decoder_suggest="zlib"
1876 tak_decoder_select="audiodsp"
1877 theora_decoder_select="vp3_decoder"
1878 thp_decoder_select="mjpeg_decoder"
1879 tiff_decoder_suggest="zlib"
1880 tiff_encoder_suggest="zlib"
1881 truehd_decoder_select="mlp_decoder"
1882 truemotion2_decoder_select="bswapdsp"
1883 truespeech_decoder_select="bswapdsp"
1884 tscc_decoder_deps="zlib"
1885 twinvq_decoder_select="mdct lsp sinewin"
1886 utvideo_decoder_select="bswapdsp"
1887 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1888 vble_decoder_select="huffyuvdsp"
1889 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1890 vc1image_decoder_select="vc1_decoder"
1891 vorbis_decoder_select="mdct"
1892 vorbis_encoder_select="mdct"
1893 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1894 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1895 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1896 vp6a_decoder_select="vp6_decoder"
1897 vp6f_decoder_select="vp6_decoder"
1898 vp7_decoder_select="h264pred videodsp"
1899 vp8_decoder_select="h264pred videodsp"
1900 vp9_decoder_select="videodsp"
1901 webp_decoder_select="vp8_decoder"
1902 wmapro_decoder_select="mdct sinewin"
1903 wmav1_decoder_select="mdct sinewin"
1904 wmav1_encoder_select="mdct sinewin"
1905 wmav2_decoder_select="mdct sinewin"
1906 wmav2_encoder_select="mdct sinewin"
1907 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1908 wmv1_decoder_select="h263_decoder"
1909 wmv1_encoder_select="h263_encoder"
1910 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1911 wmv2_encoder_select="h263_encoder"
1912 wmv3_decoder_select="vc1_decoder"
1913 wmv3image_decoder_select="wmv3_decoder"
1914 zerocodec_decoder_deps="zlib"
1915 zlib_decoder_deps="zlib"
1916 zlib_encoder_deps="zlib"
1917 zmbv_decoder_deps="zlib"
1918 zmbv_encoder_deps="zlib"
1919
1920 # hardware accelerators
1921 dxva2_deps="dxva2api_h"
1922 vaapi_deps="va_va_h"
1923 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1924 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1925 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1926
1927 h263_vaapi_hwaccel_deps="vaapi"
1928 h263_vaapi_hwaccel_select="h263_decoder"
1929 h263_vdpau_hwaccel_deps="vdpau"
1930 h263_vdpau_hwaccel_select="h263_decoder"
1931 h264_dxva2_hwaccel_deps="dxva2"
1932 h264_dxva2_hwaccel_select="h264_decoder"
1933 h264_vaapi_hwaccel_deps="vaapi"
1934 h264_vaapi_hwaccel_select="h264_decoder"
1935 h264_vda_hwaccel_deps="vda"
1936 h264_vda_hwaccel_select="h264_decoder"
1937 h264_vda_old_hwaccel_deps="vda"
1938 h264_vda_old_hwaccel_select="h264_decoder"
1939 h264_vdpau_hwaccel_deps="vdpau"
1940 h264_vdpau_hwaccel_select="h264_decoder"
1941 mpeg1_vdpau_hwaccel_deps="vdpau"
1942 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1943 mpeg2_dxva2_hwaccel_deps="dxva2"
1944 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1945 mpeg2_vaapi_hwaccel_deps="vaapi"
1946 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1947 mpeg2_vdpau_hwaccel_deps="vdpau"
1948 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1949 mpeg4_vaapi_hwaccel_deps="vaapi"
1950 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1951 mpeg4_vdpau_hwaccel_deps="vdpau"
1952 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1953 vc1_dxva2_hwaccel_deps="dxva2"
1954 vc1_dxva2_hwaccel_select="vc1_decoder"
1955 vc1_vaapi_hwaccel_deps="vaapi"
1956 vc1_vaapi_hwaccel_select="vc1_decoder"
1957 vc1_vdpau_hwaccel_deps="vdpau"
1958 vc1_vdpau_hwaccel_select="vc1_decoder"
1959 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1960 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1961 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1962
1963 # parsers
1964 h264_parser_select="h264_decoder"
1965 mpegvideo_parser_select="mpegvideo"
1966 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
1967 vc1_parser_select="mpegvideo startcode"
1968
1969 # external libraries
1970 libfaac_encoder_deps="libfaac"
1971 libfaac_encoder_select="audio_frame_queue"
1972 libfdk_aac_decoder_deps="libfdk_aac"
1973 libfdk_aac_encoder_deps="libfdk_aac"
1974 libfdk_aac_encoder_select="audio_frame_queue"
1975 libgsm_decoder_deps="libgsm"
1976 libgsm_encoder_deps="libgsm"
1977 libgsm_ms_decoder_deps="libgsm"
1978 libgsm_ms_encoder_deps="libgsm"
1979 libilbc_decoder_deps="libilbc"
1980 libilbc_encoder_deps="libilbc"
1981 libmp3lame_encoder_deps="libmp3lame"
1982 libmp3lame_encoder_select="audio_frame_queue"
1983 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1984 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1985 libopencore_amrnb_encoder_select="audio_frame_queue"
1986 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1987 libopenjpeg_decoder_deps="libopenjpeg"
1988 libopenjpeg_encoder_deps="libopenjpeg"
1989 libopus_decoder_deps="libopus"
1990 libopus_encoder_deps="libopus"
1991 libopus_encoder_select="audio_frame_queue"
1992 libschroedinger_decoder_deps="libschroedinger"
1993 libschroedinger_encoder_deps="libschroedinger"
1994 libspeex_decoder_deps="libspeex"
1995 libspeex_encoder_deps="libspeex"
1996 libspeex_encoder_select="audio_frame_queue"
1997 libtheora_encoder_deps="libtheora"
1998 libtwolame_encoder_deps="libtwolame"
1999 libvo_aacenc_encoder_deps="libvo_aacenc"
2000 libvo_aacenc_encoder_select="audio_frame_queue"
2001 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2002 libvorbis_encoder_deps="libvorbis"
2003 libvorbis_encoder_select="audio_frame_queue"
2004 libvpx_vp8_decoder_deps="libvpx"
2005 libvpx_vp8_encoder_deps="libvpx"
2006 libvpx_vp9_decoder_deps="libvpx"
2007 libvpx_vp9_encoder_deps="libvpx"
2008 libwavpack_encoder_deps="libwavpack"
2009 libwebp_encoder_deps="libwebp"
2010 libx264_encoder_deps="libx264"
2011 libx265_encoder_deps="libx265"
2012 libxavs_encoder_deps="libxavs"
2013 libxvid_encoder_deps="libxvid"
2014
2015 # demuxers / muxers
2016 ac3_demuxer_select="ac3_parser"
2017 asf_demuxer_select="riffdec"
2018 asf_muxer_select="riffenc"
2019 asf_stream_muxer_select="asf_muxer"
2020 avi_demuxer_select="riffdec"
2021 avi_muxer_select="riffenc"
2022 avisynth_demuxer_deps="avisynth"
2023 avisynth_demuxer_select="riffdec"
2024 caf_demuxer_select="riffdec"
2025 dirac_demuxer_select="dirac_parser"
2026 dv_demuxer_select="dvprofile"
2027 dv_muxer_select="dvprofile"
2028 dxa_demuxer_select="riffdec"
2029 eac3_demuxer_select="ac3_parser"
2030 f4v_muxer_select="mov_muxer"
2031 flac_demuxer_select="flac_parser"
2032 hds_muxer_select="flv_muxer"
2033 hls_muxer_select="mpegts_muxer"
2034 ipod_muxer_select="mov_muxer"
2035 ismv_muxer_select="mov_muxer"
2036 matroska_audio_muxer_select="matroska_muxer"
2037 matroska_demuxer_select="riffdec"
2038 matroska_demuxer_suggest="bzlib lzo zlib"
2039 matroska_muxer_select="riffenc"
2040 mmf_muxer_select="riffenc"
2041 mov_demuxer_select="riffdec"
2042 mov_demuxer_suggest="zlib"
2043 mov_muxer_select="riffenc rtpenc_chain"
2044 mp3_demuxer_select="mpegaudio_parser"
2045 mp4_muxer_select="mov_muxer"
2046 mpegts_muxer_select="adts_muxer latm_muxer"
2047 mpegtsraw_demuxer_select="mpegts_demuxer"
2048 mxf_d10_muxer_select="mxf_muxer"
2049 nut_muxer_select="riffenc"
2050 nuv_demuxer_select="riffdec"
2051 ogg_demuxer_select="golomb"
2052 psp_muxer_select="mov_muxer"
2053 rtp_demuxer_select="sdp_demuxer"
2054 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2055 rtsp_demuxer_select="http_protocol rtpdec"
2056 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2057 sap_demuxer_select="sdp_demuxer"
2058 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2059 sdp_demuxer_select="rtpdec"
2060 smoothstreaming_muxer_select="ismv_muxer"
2061 spdif_muxer_select="aac_parser"
2062 tak_demuxer_select="tak_parser"
2063 tg2_muxer_select="mov_muxer"
2064 tgp_muxer_select="mov_muxer"
2065 w64_demuxer_select="wav_demuxer"
2066 wav_demuxer_select="riffdec"
2067 wav_muxer_select="riffenc"
2068 webm_muxer_select="riffenc"
2069 wtv_demuxer_select="riffdec"
2070 xmv_demuxer_select="riffdec"
2071 xwma_demuxer_select="riffdec"
2072
2073 # indevs / outdevs
2074 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2075 alsa_outdev_deps="alsa_asoundlib_h"
2076 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2077 dv1394_indev_deps="dv1394"
2078 dv1394_indev_select="dv_demuxer"
2079 fbdev_indev_deps="linux_fb_h"
2080 jack_indev_deps="jack_jack_h pthreads"
2081 libcdio_indev_deps="libcdio"
2082 libdc1394_indev_deps="libdc1394"
2083 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2084 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2085 pulse_indev_deps="libpulse"
2086 sndio_indev_deps="sndio_h"
2087 sndio_outdev_deps="sndio_h"
2088 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2089 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2090 vfwcap_indev_extralibs="-lavicap32"
2091 x11grab_indev_deps="x11grab XShmCreateImage"
2092
2093 # protocols
2094 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2095 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2096 ffrtmpcrypt_protocol_select="tcp_protocol"
2097 ffrtmphttp_protocol_deps="!librtmp_protocol"
2098 ffrtmphttp_protocol_select="http_protocol"
2099 gopher_protocol_select="network"
2100 http_protocol_select="tcp_protocol"
2101 httpproxy_protocol_select="tcp_protocol"
2102 https_protocol_select="tls_protocol"
2103 icecast_protocol_select="http_protocol"
2104 librtmp_protocol_deps="librtmp"
2105 librtmpe_protocol_deps="librtmp"
2106 librtmps_protocol_deps="librtmp"
2107 librtmpt_protocol_deps="librtmp"
2108 librtmpte_protocol_deps="librtmp"
2109 mmsh_protocol_select="http_protocol"
2110 mmst_protocol_select="network"
2111 rtmp_protocol_deps="!librtmp_protocol"
2112 rtmp_protocol_select="tcp_protocol"
2113 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2114 rtmps_protocol_deps="!librtmp_protocol"
2115 rtmps_protocol_select="tls_protocol"
2116 rtmpt_protocol_select="ffrtmphttp_protocol"
2117 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2118 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2119 rtp_protocol_select="udp_protocol"
2120 sctp_protocol_deps="struct_sctp_event_subscribe"
2121 sctp_protocol_select="network"
2122 srtp_protocol_select="rtp_protocol"
2123 tcp_protocol_select="network"
2124 tls_protocol_deps_any="openssl gnutls"
2125 tls_protocol_select="tcp_protocol"
2126 udp_protocol_select="network"
2127 unix_protocol_deps="sys_un_h"
2128 unix_protocol_select="network"
2129
2130 # filters
2131 blackframe_filter_deps="gpl"
2132 boxblur_filter_deps="gpl"
2133 bs2b_filter_deps="libbs2b"
2134 cropdetect_filter_deps="gpl"
2135 delogo_filter_deps="gpl"
2136 drawtext_filter_deps="libfreetype"
2137 frei0r_filter_deps="frei0r dlopen"
2138 frei0r_filter_extralibs='$ldl'
2139 frei0r_src_filter_deps="frei0r dlopen"
2140 frei0r_src_filter_extralibs='$ldl'
2141 hqdn3d_filter_deps="gpl"
2142 interlace_filter_deps="gpl"
2143 ocv_filter_deps="libopencv"
2144 resample_filter_deps="avresample"
2145 scale_filter_deps="swscale"
2146
2147 # examples
2148 avcodec_example_deps="avcodec avutil"
2149 filter_audio_example_deps="avfilter avutil"
2150 metadata_example_deps="avformat avutil"
2151 output_example_deps="avcodec avformat avutil swscale"
2152 transcode_aac_example_deps="avcodec avformat avresample"
2153
2154 # libraries, in linking order
2155 avcodec_deps="avutil"
2156 avdevice_deps="avformat avcodec avutil"
2157 avfilter_deps="avutil"
2158 avformat_deps="avcodec avutil"
2159 avresample_deps="avutil"
2160 swscale_deps="avutil"
2161
2162 # programs
2163 avconv_deps="avcodec avfilter avformat avresample swscale"
2164 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2165                fps_filter null_filter resample_filter scale_filter
2166                setpts_filter trim_filter"
2167 avplay_deps="avcodec avformat avresample swscale sdl"
2168 avplay_libs='$sdl_libs'
2169 avplay_select="rdft"
2170 avprobe_deps="avcodec avformat"
2171
2172 # documentation
2173 pod2man_deps="doc"
2174 texi2html_deps="doc"
2175
2176 # default parameters
2177
2178 logfile="config.log"
2179
2180 # installation paths
2181 prefix_default="/usr/local"
2182 bindir_default='${prefix}/bin'
2183 datadir_default='${prefix}/share/avconv'
2184 docdir_default='${prefix}/share/doc/libav'
2185 incdir_default='${prefix}/include'
2186 libdir_default='${prefix}/lib'
2187 mandir_default='${prefix}/share/man'
2188 shlibdir_default="$libdir_default"
2189
2190 # toolchain
2191 ar_default="ar"
2192 cc_default="gcc"
2193 host_cc_default="gcc"
2194 cp_f="cp -f"
2195 ln_s="ln -s -f"
2196 nm_default="nm -g"
2197 objformat="elf"
2198 pkg_config_default=pkg-config
2199 ranlib="ranlib"
2200 strip="strip"
2201 yasmexe="yasm"
2202
2203 # machine
2204 arch_default=$(uname -m)
2205 cpu="generic"
2206 intrinsics="none"
2207
2208 # OS
2209 target_os_default=$(tolower $(uname -s))
2210 host_os=$target_os_default
2211
2212 # configurable options
2213 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2214
2215 enable asm
2216 enable debug
2217 enable doc
2218 enable optimizations
2219 enable safe_bitstream_reader
2220 enable static
2221 enable swscale_alpha
2222
2223 # By default, enable only those hwaccels that have no external dependencies.
2224 enable dxva2 vdpau
2225
2226 # build settings
2227 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2228 LIBPREF="lib"
2229 LIBSUF=".a"
2230 FULLNAME='$(NAME)$(BUILDSUF)'
2231 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2232 SLIBPREF="lib"
2233 SLIBSUF=".so"
2234 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2235 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2236 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2237 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2238 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2239 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2240
2241 asflags_filter=echo
2242 cflags_filter=echo
2243 ldflags_filter=echo
2244
2245 AS_C='-c'
2246 AS_O='-o $@'
2247 CC_C='-c'
2248 CC_E='-E -o $@'
2249 CC_O='-o $@'
2250 LD_O='-o $@'
2251 LD_LIB='-l%'
2252 LD_PATH='-L'
2253 HOSTCC_C='-c'
2254 HOSTCC_E='-E -o $@'
2255 HOSTCC_O='-o $@'
2256 HOSTLD_O='-o $@'
2257
2258 host_libs='-lm'
2259 host_cflags_filter=echo
2260 host_ldflags_filter=echo
2261
2262 target_path='$(CURDIR)'
2263
2264 # since the object filename is not given with the -MM flag, the compiler
2265 # is only able to print the basename, and we must add the path ourselves
2266 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2267 DEPFLAGS='-MM'
2268
2269 # find source path
2270 if test -f configure; then
2271     source_path=.
2272 else
2273     source_path=$(cd $(dirname "$0"); pwd)
2274     echo "$source_path" | grep -q '[[:blank:]]' &&
2275         die "Out of tree builds are impossible with whitespace in source path."
2276     test -e "$source_path/config.h" &&
2277         die "Out of tree builds are impossible with config.h in source dir."
2278 fi
2279
2280 for v in "$@"; do
2281     r=${v#*=}
2282     l=${v%"$r"}
2283     r=$(sh_quote "$r")
2284     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2285 done
2286
2287 find_things(){
2288     thing=$1
2289     pattern=$2
2290     file=$source_path/$3
2291     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2292 }
2293
2294 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2295 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2296 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2297 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2298 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2299 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2300 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2301 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2302 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2303 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2304 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2305
2306 ALL_COMPONENTS="
2307     $BSF_LIST
2308     $DECODER_LIST
2309     $DEMUXER_LIST
2310     $ENCODER_LIST
2311     $FILTER_LIST
2312     $HWACCEL_LIST
2313     $INDEV_LIST
2314     $MUXER_LIST
2315     $OUTDEV_LIST
2316     $PARSER_LIST
2317     $PROTOCOL_LIST
2318 "
2319
2320 for n in $COMPONENT_LIST; do
2321     v=$(toupper ${n%s})_LIST
2322     eval enable \$$v
2323     eval ${n}_if_any="\$$v"
2324 done
2325
2326 enable $ARCH_EXT_LIST
2327
2328 die_unknown(){
2329     echo "Unknown option \"$1\"."
2330     echo "See $0 --help for available options."
2331     exit 1
2332 }
2333
2334 print_3_columns() {
2335     cat | tr ' ' '\n' | sort | pr -r -3 -t
2336 }
2337
2338 show_list() {
2339     suffix=_$1
2340     shift
2341     echo $* | sed s/$suffix//g | print_3_columns
2342     exit 0
2343 }
2344
2345 rand_list(){
2346     IFS=', '
2347     set -- $*
2348     unset IFS
2349     for thing; do
2350         comp=${thing%:*}
2351         prob=${thing#$comp}
2352         prob=${prob#:}
2353         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2354         echo "prob ${prob:-0.5}"
2355         printf '%s\n' $comp
2356     done
2357 }
2358
2359 do_random(){
2360     action=$1
2361     shift
2362     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2363     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2364 }
2365
2366 for opt do
2367     optval="${opt#*=}"
2368     case "$opt" in
2369         --extra-ldflags=*)
2370             add_ldflags $optval
2371         ;;
2372         --extra-ldexeflags=*)
2373             add_ldexeflags $optval
2374         ;;
2375         --extra-libs=*)
2376             add_extralibs $optval
2377         ;;
2378         --disable-devices)
2379             disable $INDEV_LIST $OUTDEV_LIST
2380         ;;
2381         --enable-debug=*)
2382             debuglevel="$optval"
2383         ;;
2384         --disable-programs)
2385             disable $PROGRAM_LIST
2386         ;;
2387         --disable-everything)
2388             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2389         ;;
2390         --disable-all)
2391             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2392             disable $LIBRARY_LIST $PROGRAM_LIST doc
2393         ;;
2394         --enable-random|--disable-random)
2395             action=${opt%%-random}
2396             do_random ${action#--} $COMPONENT_LIST
2397         ;;
2398         --enable-random=*|--disable-random=*)
2399             action=${opt%%-random=*}
2400             do_random ${action#--} $optval
2401         ;;
2402         --enable-*=*|--disable-*=*)
2403             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2404             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2405             eval list=\$$(toupper $thing)_LIST
2406             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2407             $action $(filter "$name" $list)
2408         ;;
2409         --enable-avserver|--disable-avserver*)
2410             warn "avserver has been removed, the ${opt} option is only"\
2411                  "provided for compatibility and will be removed in the future"
2412         ;;
2413         --enable-?*|--disable-?*)
2414             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2415             if is_in $option $COMPONENT_LIST; then
2416                 test $action = disable && action=unset
2417                 eval $action \$$(toupper ${option%s})_LIST
2418             elif is_in $option $CMDLINE_SELECT; then
2419                 $action $option
2420             else
2421                 die_unknown $opt
2422             fi
2423         ;;
2424         --list-*)
2425             NAME="${opt#--list-}"
2426             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2427             NAME=${NAME%s}
2428             eval show_list $NAME \$$(toupper $NAME)_LIST
2429         ;;
2430         --help|-h) show_help
2431         ;;
2432         *)
2433             optname="${opt%%=*}"
2434             optname="${optname#--}"
2435             optname=$(echo "$optname" | sed 's/-/_/g')
2436             if is_in $optname $CMDLINE_SET; then
2437                 eval $optname='$optval'
2438             elif is_in $optname $CMDLINE_APPEND; then
2439                 append $optname "$optval"
2440             else
2441                 die_unknown $opt
2442             fi
2443         ;;
2444     esac
2445 done
2446
2447 disabled logging && logfile=/dev/null
2448
2449 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2450 set >> $logfile
2451
2452 test -n "$cross_prefix" && enable cross_compile
2453
2454 if enabled cross_compile; then
2455     test -n "$arch" && test -n "$target_os" ||
2456         die "Must specify target arch and OS when cross-compiling"
2457 fi
2458
2459 ar_default="${cross_prefix}${ar_default}"
2460 cc_default="${cross_prefix}${cc_default}"
2461 nm_default="${cross_prefix}${nm_default}"
2462 pkg_config_default="${cross_prefix}${pkg_config_default}"
2463 ranlib="${cross_prefix}${ranlib}"
2464 strip="${cross_prefix}${strip}"
2465
2466 sysinclude_default="${sysroot}/usr/include"
2467
2468 case "$toolchain" in
2469     clang-asan)
2470         cc_default="clang"
2471         add_cflags  -fsanitize=address
2472         add_ldflags -fsanitize=address
2473     ;;
2474     clang-tsan)
2475         cc_default="clang"
2476         add_cflags  -fsanitize=thread -pie
2477         add_ldflags -fsanitize=thread -pie
2478     ;;
2479     clang-usan)
2480         cc_default="clang"
2481         add_cflags  -fsanitize=undefined -O1
2482         add_ldflags -fsanitize=undefined
2483     ;;
2484     gcc-asan)
2485         cc_default="gcc"
2486         add_cflags  -fsanitize=address
2487         add_ldflags -fsanitize=address
2488     ;;
2489     gcc-tsan)
2490         cc_default="gcc"
2491         add_cflags  -fsanitize=thread -pie -fPIC
2492         add_ldflags -fsanitize=thread -pie -fPIC
2493     ;;
2494     gcc-usan)
2495         cc_default="gcc"
2496         add_cflags  -fsanitize=undefined
2497         add_ldflags -fsanitize=undefined
2498     ;;
2499     valgrind-massif)
2500         target_exec_default="valgrind"
2501         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2502     ;;
2503     valgrind-memcheck)
2504         target_exec_default="valgrind"
2505         target_exec_args="--track-origins=yes --leak-check=full"
2506     ;;
2507     msvc)
2508         # Check whether the current MSVC version needs the C99 converter.
2509         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2510         # support enough of C99 to build libav. Default to the new
2511         # behaviour if the regexp was unable to match anything, since this
2512         # successfully parses the version number of existing supported
2513         # versions that require the converter (MSVC 2010 and 2012).
2514         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2515         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2516             cc_default="cl"
2517         else
2518             cc_default="c99wrap cl"
2519         fi
2520         ld_default="link"
2521         nm_default="dumpbin -symbols"
2522         ar_default="lib"
2523         target_os_default="win32"
2524         # Use a relative path for TMPDIR. This makes sure all the
2525         # ffconf temp files are written with a relative path, avoiding
2526         # issues with msys/win32 path conversion for MSVC parameters
2527         # such as -Fo<file> or -out:<file>.
2528         TMPDIR=.
2529     ;;
2530     icl)
2531         cc_default="icl"
2532         ld_default="xilink"
2533         nm_default="dumpbin -symbols"
2534         ar_default="xilib"
2535         target_os_default="win32"
2536         TMPDIR=.
2537     ;;
2538     gcov)
2539         add_cflags  -fprofile-arcs -ftest-coverage
2540         add_ldflags -fprofile-arcs -ftest-coverage
2541     ;;
2542     hardened)
2543         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2544         add_ldflags -Wl,-z,relro -Wl,-z,now
2545     ;;
2546     ?*)
2547         die "Unknown toolchain $toolchain"
2548     ;;
2549 esac
2550
2551 set_default arch cc pkg_config sysinclude target_exec target_os
2552 enabled cross_compile || host_cc_default=$cc
2553 set_default host_cc
2554
2555 if ! $pkg_config --version >/dev/null 2>&1; then
2556     warn "$pkg_config not found, library detection may fail."
2557     pkg_config=false
2558 fi
2559
2560 exesuf() {
2561     case $1 in
2562         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2563     esac
2564 }
2565
2566 EXESUF=$(exesuf $target_os)
2567 HOSTEXESUF=$(exesuf $host_os)
2568
2569 # set temporary file name
2570 : ${TMPDIR:=$TEMPDIR}
2571 : ${TMPDIR:=$TMP}
2572 : ${TMPDIR:=/tmp}
2573
2574 if ! check_cmd mktemp -u XXXXXX; then
2575     # simple replacement for missing mktemp
2576     # NOT SAFE FOR GENERAL USE
2577     mktemp(){
2578         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2579     }
2580 fi
2581
2582 tmpfile(){
2583     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2584         (set -C; exec > $tmp) 2>/dev/null ||
2585         die "Unable to create temporary file in $TMPDIR."
2586     append TMPFILES $tmp
2587     eval $1=$tmp
2588 }
2589
2590 trap 'rm -f -- $TMPFILES' EXIT
2591
2592 tmpfile TMPASM .asm
2593 tmpfile TMPC   .c
2594 tmpfile TMPE   $EXESUF
2595 tmpfile TMPH   .h
2596 tmpfile TMPO   .o
2597 tmpfile TMPS   .S
2598 tmpfile TMPSH  .sh
2599 tmpfile TMPV   .ver
2600
2601 unset -f mktemp
2602
2603 chmod +x $TMPE
2604
2605 # make sure we can execute files in $TMPDIR
2606 cat > $TMPSH 2>> $logfile <<EOF
2607 #! /bin/sh
2608 EOF
2609 chmod +x $TMPSH >> $logfile 2>&1
2610 if ! $TMPSH >> $logfile 2>&1; then
2611     cat <<EOF
2612 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2613 variable to another directory and make sure that it is not mounted noexec.
2614 EOF
2615     die "Sanity test failed."
2616 fi
2617
2618 armasm_flags(){
2619     for flag; do
2620         case $flag in
2621             # Filter out MSVC cl.exe options from cflags that shouldn't
2622             # be passed to gas-preprocessor
2623             -M[TD]*)                                            ;;
2624             *)                  echo $flag                      ;;
2625         esac
2626    done
2627 }
2628
2629 ccc_flags(){
2630     for flag; do
2631         case $flag in
2632             -std=c99)           echo -c99                       ;;
2633             -mcpu=*)            echo -arch ${flag#*=}           ;;
2634             -mieee)             echo -ieee                      ;;
2635             -O*|-fast)          echo $flag                      ;;
2636             -fno-math-errno)    echo -assume nomath_errno       ;;
2637             -g)                 echo -g3                        ;;
2638             -Wall)              echo -msg_enable level2         ;;
2639             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2640             -Wl,*)              echo $flag                      ;;
2641             -f*|-W*)                                            ;;
2642             *)                  echo $flag                      ;;
2643         esac
2644    done
2645 }
2646
2647 cparser_flags(){
2648     for flag; do
2649         case $flag in
2650             -Wno-switch)             echo -Wno-switch-enum ;;
2651             -Wno-format-zero-length) ;;
2652             -Wdisabled-optimization) ;;
2653             -Wno-pointer-sign)       echo -Wno-other ;;
2654             *)                       echo $flag ;;
2655         esac
2656     done
2657 }
2658
2659 msvc_common_flags(){
2660     for flag; do
2661         case $flag in
2662             # In addition to specifying certain flags under the compiler
2663             # specific filters, they must be specified here as well or else the
2664             # generic catch all at the bottom will print the original flag.
2665             -Wall)                ;;
2666             -std=c99)             ;;
2667             # Common flags
2668             -fomit-frame-pointer) ;;
2669             -g)                   echo -Z7 ;;
2670             -fno-math-errno)      ;;
2671             -fno-common)          ;;
2672             -fno-signed-zeros)    ;;
2673             -fPIC)                ;;
2674             -mthumb)              ;;
2675             -march=*)             ;;
2676             -lz)                  echo zlib.lib ;;
2677             -lavifil32)           echo vfw32.lib ;;
2678             -lavicap32)           echo vfw32.lib user32.lib ;;
2679             -l*)                  echo ${flag#-l}.lib ;;
2680             *)                    echo $flag ;;
2681         esac
2682     done
2683 }
2684
2685 msvc_flags(){
2686     msvc_common_flags "$@"
2687     for flag; do
2688         case $flag in
2689             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2690                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2691                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2692                                        -wd4273 ;;
2693         esac
2694     done
2695 }
2696
2697 icl_flags(){
2698     msvc_common_flags "$@"
2699     for flag; do
2700         case $flag in
2701             # Despite what Intel's documentation says -Wall, which is supported
2702             # on Windows, does enable remarks so disable them here.
2703             -Wall)                echo $flag -Qdiag-disable:remark ;;
2704             -std=c99)             echo -Qstd=c99 ;;
2705         esac
2706     done
2707 }
2708
2709 pgi_flags(){
2710     for flag; do
2711         case $flag in
2712             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2713             -fomit-frame-pointer) echo -Mnoframe ;;
2714             -g)                   echo -gopt ;;
2715             *)                    echo $flag ;;
2716         esac
2717     done
2718 }
2719
2720 suncc_flags(){
2721     for flag; do
2722         case $flag in
2723             -march=*|-mcpu=*)
2724                 case "${flag#*=}" in
2725                     native)                   echo -xtarget=native       ;;
2726                     v9|niagara)               echo -xarch=sparc          ;;
2727                     ultrasparc)               echo -xarch=sparcvis       ;;
2728                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2729                     i586|pentium)             echo -xchip=pentium        ;;
2730                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2731                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2732                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2733                     pentium4*)          echo -xtarget=pentium4           ;;
2734                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2735                     *-sse3)             echo -xarch=sse3                 ;;
2736                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2737                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2738                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2739                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2740                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2741                     k8|opteron|athlon64|athlon-fx)
2742                                                echo -xarch=sse2a         ;;
2743                     athlon*)                   echo -xarch=pentium_proa  ;;
2744                 esac
2745                 ;;
2746             -std=c99)             echo -xc99              ;;
2747             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2748             -fPIC)                echo -KPIC -xcode=pic32 ;;
2749             -W*,*)                echo $flag              ;;
2750             -f*-*|-W*|-mimpure-text)                      ;;
2751             -shared)              echo -G                 ;;
2752             *)                    echo $flag              ;;
2753         esac
2754     done
2755 }
2756
2757 tms470_flags(){
2758     for flag; do
2759         case $flag in
2760             -march=*|-mcpu=*)
2761                 case "${flag#*=}" in
2762                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2763                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2764                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2765                     armv6*|arm11*)          echo -mv=6   ;;
2766                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2767                                             echo -mv=5e  ;;
2768                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2769                 esac
2770                 ;;
2771             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2772             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2773             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2774             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2775             -msoft-float)   echo --float_support=vfplib       ;;
2776             -O[0-3]|-mf=*)  echo $flag                        ;;
2777             -g)             echo -g -mn                       ;;
2778             -pds=*)         echo $flag                        ;;
2779             -D*|-I*)        echo $flag                        ;;
2780             --gcc|--abi=*)  echo $flag                        ;;
2781             -me)            echo $flag                        ;;
2782         esac
2783     done
2784 }
2785
2786 probe_cc(){
2787     pfx=$1
2788     _cc=$2
2789
2790     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2791     unset _ld_o _ldflags _ld_lib _ld_path
2792     unset _depflags _DEPCMD _DEPFLAGS
2793     _flags_filter=echo
2794
2795     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2796         _type=llvm_gcc
2797         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2798         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2799         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2800         _cflags_speed='-O3'
2801         _cflags_size='-Os'
2802     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2803         _type=gcc
2804         gcc_version=$($_cc --version | head -n1)
2805         gcc_basever=$($_cc -dumpversion)
2806         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2807         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2808         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2809         if ! $_cc -dumpversion | grep -q '^2\.'; then
2810             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2811         fi
2812         _cflags_speed='-O3'
2813         _cflags_size='-Os'
2814     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2815         _type=icc
2816         _ident=$($_cc --version | head -n1)
2817         _depflags='-MMD'
2818         _cflags_speed='-O3'
2819         _cflags_size='-Os'
2820         _cflags_noopt='-O1'
2821     elif $_cc -v 2>&1 | grep -q xlc; then
2822         _type=xlc
2823         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2824         _cflags_speed='-O5'
2825         _cflags_size='-O5 -qcompact'
2826     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2827         _type=ccc
2828         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2829         _DEPFLAGS='-M'
2830         _cflags_speed='-fast'
2831         _cflags_size='-O1'
2832         _flags_filter=ccc_flags
2833     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2834         test -d "$sysroot" || die "No valid sysroot specified."
2835         _type=armcc
2836         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2837         armcc_conf="$PWD/armcc.conf"
2838         $_cc --arm_linux_configure                 \
2839              --arm_linux_config_file="$armcc_conf" \
2840              --configure_sysroot="$sysroot"        \
2841              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2842              die "Error creating armcc configuration file."
2843         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2844         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2845         as_default="${cross_prefix}gcc"
2846         _depflags='-MMD'
2847         _cflags_speed='-O3'
2848         _cflags_size='-Os'
2849     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2850         _type=tms470
2851         _ident=$($_cc -version | head -n1 | tr -s ' ')
2852         _flags='--gcc --abi=eabi -me'
2853         _cc_e='-ppl -fe=$@'
2854         _cc_o='-fe=$@'
2855         _depflags='-ppa -ppd=$(@:.o=.d)'
2856         _cflags_speed='-O3 -mf=5'
2857         _cflags_size='-O3 -mf=2'
2858         _flags_filter=tms470_flags
2859     elif $_cc -v 2>&1 | grep -q clang; then
2860         _type=clang
2861         _ident=$($_cc --version | head -n1)
2862         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2863         _cflags_speed='-O3'
2864         _cflags_size='-Os'
2865     elif $_cc -V 2>&1 | grep -q Sun; then
2866         _type=suncc
2867         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2868         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2869         _DEPFLAGS='-xM1 -xc99'
2870         _ldflags='-std=c99'
2871         _cflags_speed='-O5'
2872         _cflags_size='-O5 -xspace'
2873         _flags_filter=suncc_flags
2874     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2875         _type=pathscale
2876         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2877         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2878         _cflags_speed='-O2'
2879         _cflags_size='-Os'
2880         _flags_filter='filter_out -Wdisabled-optimization'
2881     elif $_cc -v 2>&1 | grep -q Open64; then
2882         _type=open64
2883         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2884         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2885         _cflags_speed='-O2'
2886         _cflags_size='-Os'
2887         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2888     elif $_cc -V 2>&1 | grep -q Portland; then
2889         _type=pgi
2890         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2891         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2892         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2893         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2894         _cflags_noopt="-O1"
2895         _flags_filter=pgi_flags
2896     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
2897         _type=armasm
2898         _ident=$($_cc | head -n1)
2899         # 4509: "This form of conditional instruction is deprecated"
2900         _flags="-nologo -ignore 4509"
2901         _flags_filter=armasm_flags
2902     elif $_cc 2>&1 | grep -q Microsoft; then
2903         _type=msvc
2904         _ident=$($cc 2>&1 | head -n1)
2905         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2906         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2907         _cflags_speed="-O2"
2908         _cflags_size="-O1"
2909         if $_cc 2>&1 | grep -q Linker; then
2910             _ld_o='-out:$@'
2911         else
2912             _ld_o='-Fe$@'
2913         fi
2914         _cc_o='-Fo$@'
2915         _cc_e='-P -Fi$@'
2916         _flags_filter=msvc_flags
2917         _ld_lib='lib%.a'
2918         _ld_path='-libpath:'
2919         _flags='-nologo'
2920         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2921         if [ $pfx = hostcc ]; then
2922             append _cflags -Dsnprintf=_snprintf
2923         fi
2924     elif $_cc 2>&1 | grep -q Intel; then
2925         _type=icl
2926         _ident=$($cc 2>&1 | head -n1)
2927         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2928         # Not only is O3 broken on 13.x+ but it is slower on all previous
2929         # versions (tested) as well.
2930         _cflags_speed="-O2"
2931         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2932         if $_cc 2>&1 | grep -q Linker; then
2933             _ld_o='-out:$@'
2934         else
2935             _ld_o='-Fe$@'
2936         fi
2937         _cc_o='-Fo$@'
2938         _cc_e='-P'
2939         _flags_filter=icl_flags
2940         _ld_lib='lib%.a'
2941         _ld_path='-libpath:'
2942         # -Qdiag-error to make icl error when seeing certain unknown arguments
2943         _flags='-nologo -Qdiag-error:4044,10157'
2944         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2945         # with MSVC which enables it by default.
2946         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2947         if [ $pfx = hostcc ]; then
2948             append _cflags -Dsnprintf=_snprintf
2949         fi
2950     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2951         _type=cparser
2952         _ident=$($_cc --version | head -n1)
2953         _depflags='-MMD'
2954         _cflags_speed='-O4'
2955         _cflags_size='-O2'
2956         _flags_filter=cparser_flags
2957     fi
2958
2959     eval ${pfx}_type=\$_type
2960     eval ${pfx}_ident=\$_ident
2961 }
2962
2963 set_ccvars(){
2964     eval ${1}_C=\${_cc_c-\${${1}_C}}
2965     eval ${1}_E=\${_cc_e-\${${1}_E}}
2966     eval ${1}_O=\${_cc_o-\${${1}_O}}
2967
2968     if [ -n "$_depflags" ]; then
2969         eval ${1}_DEPFLAGS=\$_depflags
2970     else
2971         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2972         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2973         eval DEP${1}FLAGS=\$_flags
2974     fi
2975 }
2976
2977 probe_cc cc "$cc"
2978 cflags_filter=$_flags_filter
2979 cflags_speed=$_cflags_speed
2980 cflags_size=$_cflags_size
2981 cflags_noopt=$_cflags_noopt
2982 add_cflags $_flags $_cflags
2983 cc_ldflags=$_ldflags
2984 set_ccvars CC
2985
2986 probe_cc hostcc "$host_cc"
2987 host_cflags_filter=$_flags_filter
2988 add_host_cflags  $_flags $_cflags
2989 set_ccvars HOSTCC
2990
2991 test -n "$cc_type" && enable $cc_type ||
2992     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2993
2994 : ${as_default:=$cc}
2995 : ${dep_cc_default:=$cc}
2996 : ${ld_default:=$cc}
2997 : ${host_ld_default:=$host_cc}
2998 set_default ar as dep_cc ld host_ld
2999
3000 probe_cc as "$as"
3001 asflags_filter=$_flags_filter
3002 add_asflags $_flags $_cflags
3003 set_ccvars AS
3004
3005 probe_cc ld "$ld"
3006 ldflags_filter=$_flags_filter
3007 add_ldflags $_flags $_ldflags
3008 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3009 LD_O=${_ld_o-$LD_O}
3010 LD_LIB=${_ld_lib-$LD_LIB}
3011 LD_PATH=${_ld_path-$LD_PATH}
3012
3013 probe_cc hostld "$host_ld"
3014 host_ldflags_filter=$_flags_filter
3015 add_host_ldflags $_flags $_ldflags
3016 HOSTLD_O=${_ld_o-$HOSTLD_O}
3017
3018 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3019     probe_cc depcc "$dep_cc"
3020     CCDEP=${_DEPCMD:-$DEPCMD}
3021     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3022     DEPCCFLAGS=$_flags
3023 fi
3024
3025 if $ar 2>&1 | grep -q Microsoft; then
3026     arflags="-nologo"
3027     ar_o='-out:$@'
3028 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3029     arflags="rq"
3030     ar_o='$@'
3031 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3032     arflags='-Xany -r -c'
3033     ar_o='$@'
3034 else
3035     arflags="rc"
3036     ar_o='$@'
3037 fi
3038
3039 add_cflags $extra_cflags
3040 add_asflags $extra_cflags
3041
3042 if test -n "$sysroot"; then
3043     case "$cc_type" in
3044         gcc|llvm_gcc|clang)
3045             add_cppflags --sysroot="$sysroot"
3046             add_ldflags --sysroot="$sysroot"
3047         ;;
3048         tms470)
3049             add_cppflags -I"$sysinclude"
3050             add_ldflags  --sysroot="$sysroot"
3051         ;;
3052     esac
3053 fi
3054
3055 if test "$cpu" = host; then
3056     enabled cross_compile &&
3057         die "--cpu=host makes no sense when cross-compiling."
3058
3059     case "$cc_type" in
3060         gcc|llvm_gcc)
3061             check_native(){
3062                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3063                 sed -n "/cc1.*$1=/{
3064                             s/.*$1=\\([^ ]*\\).*/\\1/
3065                             p
3066                             q
3067                         }" $TMPE
3068             }
3069             cpu=$(check_native -march || check_native -mcpu)
3070         ;;
3071     esac
3072
3073     test "${cpu:-host}" = host &&
3074         die "--cpu=host not supported with compiler $cc"
3075 fi
3076
3077 # Deal with common $arch aliases
3078 case "$arch" in
3079     aarch64|arm64)
3080         arch="aarch64"
3081     ;;
3082     arm*)
3083         arch="arm"
3084     ;;
3085     mips*|IP*)
3086         arch="mips"
3087     ;;
3088     parisc*|hppa*)
3089         arch="parisc"
3090     ;;
3091     "Power Macintosh"|ppc*|powerpc*)
3092         arch="ppc"
3093     ;;
3094     s390|s390x)
3095         arch="s390"
3096     ;;
3097     sh4|sh)
3098         arch="sh4"
3099     ;;
3100     sun4u|sparc*)
3101         arch="sparc"
3102     ;;
3103     tilegx|tile-gx)
3104         arch="tilegx"
3105     ;;
3106     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3107         arch="x86"
3108     ;;
3109 esac
3110
3111 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3112 enable $arch
3113
3114 # Add processor-specific flags
3115 if enabled aarch64; then
3116
3117     case $cpu in
3118         armv*)
3119             cpuflags="-march=$cpu"
3120         ;;
3121         *)
3122             cpuflags="-mcpu=$cpu"
3123         ;;
3124     esac
3125
3126 elif enabled alpha; then
3127
3128     cpuflags="-mcpu=$cpu"
3129
3130 elif enabled arm; then
3131
3132     check_arm_arch() {
3133         check_cpp_condition stddef.h \
3134             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3135             $cpuflags
3136     }
3137
3138     probe_arm_arch() {
3139         if   check_arm_arch 4;        then echo armv4;
3140         elif check_arm_arch 4T;       then echo armv4t;
3141         elif check_arm_arch 5;        then echo armv5;
3142         elif check_arm_arch 5E;       then echo armv5e;
3143         elif check_arm_arch 5T;       then echo armv5t;
3144         elif check_arm_arch 5TE;      then echo armv5te;
3145         elif check_arm_arch 5TEJ;     then echo armv5te;
3146         elif check_arm_arch 6;        then echo armv6;
3147         elif check_arm_arch 6J;       then echo armv6j;
3148         elif check_arm_arch 6K;       then echo armv6k;
3149         elif check_arm_arch 6Z;       then echo armv6z;
3150         elif check_arm_arch 6ZK;      then echo armv6zk;
3151         elif check_arm_arch 6T2;      then echo armv6t2;
3152         elif check_arm_arch 7;        then echo armv7;
3153         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3154         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3155         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3156         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3157         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3158         fi
3159     }
3160
3161     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3162
3163     case $cpu in
3164         armv*)
3165             cpuflags="-march=$cpu"
3166             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3167         ;;
3168         *)
3169             cpuflags="-mcpu=$cpu"
3170             case $cpu in
3171                 cortex-a*)                               subarch=armv7a  ;;
3172                 cortex-r*)                               subarch=armv7r  ;;
3173                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3174                 arm11*)                                  subarch=armv6   ;;
3175                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3176                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3177                 *)                             subarch=$(probe_arm_arch) ;;
3178             esac
3179         ;;
3180     esac
3181
3182     case "$subarch" in
3183         armv5t*)    enable fast_clz                ;;
3184         armv[6-8]*) enable fast_clz fast_unaligned ;;
3185     esac
3186
3187 elif enabled avr32; then
3188
3189     case $cpu in
3190         ap7[02]0[0-2])
3191             subarch="avr32_ap"
3192             cpuflags="-mpart=$cpu"
3193         ;;
3194         ap)
3195             subarch="avr32_ap"
3196             cpuflags="-march=$cpu"
3197         ;;
3198         uc3[ab]*)
3199             subarch="avr32_uc"
3200             cpuflags="-mcpu=$cpu"
3201         ;;
3202         uc)
3203             subarch="avr32_uc"
3204             cpuflags="-march=$cpu"
3205         ;;
3206     esac
3207
3208 elif enabled bfin; then
3209
3210     cpuflags="-mcpu=$cpu"
3211
3212 elif enabled mips; then
3213
3214     cpuflags="-march=$cpu"
3215
3216 elif enabled ppc; then
3217
3218     disable ldbrx
3219
3220     case $(tolower $cpu) in
3221         601|ppc601|powerpc601)
3222             cpuflags="-mcpu=601"
3223             disable altivec
3224         ;;
3225         603*|ppc603*|powerpc603*)
3226             cpuflags="-mcpu=603"
3227             disable altivec
3228         ;;
3229         604*|ppc604*|powerpc604*)
3230             cpuflags="-mcpu=604"
3231             disable altivec
3232         ;;
3233         g3|75*|ppc75*|powerpc75*)
3234             cpuflags="-mcpu=750"
3235             disable altivec
3236         ;;
3237         g4|745*|ppc745*|powerpc745*)
3238             cpuflags="-mcpu=7450"
3239         ;;
3240         74*|ppc74*|powerpc74*)
3241             cpuflags="-mcpu=7400"
3242         ;;
3243         g5|970|ppc970|powerpc970)
3244             cpuflags="-mcpu=970"
3245         ;;
3246         power[3-7]*)
3247             cpuflags="-mcpu=$cpu"
3248         ;;
3249         cell)
3250             cpuflags="-mcpu=cell"
3251             enable ldbrx
3252         ;;
3253         e500mc)
3254             cpuflags="-mcpu=e500mc"
3255             disable altivec
3256         ;;
3257         e500v2)
3258             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3259             disable altivec
3260             disable dcbzl
3261         ;;
3262         e500)
3263             cpuflags="-mcpu=8540 -mhard-float"
3264             disable altivec
3265             disable dcbzl
3266         ;;
3267     esac
3268
3269 elif enabled sparc; then
3270
3271     case $cpu in
3272         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3273             cpuflags="-mcpu=$cpu"
3274         ;;
3275         ultrasparc*|niagara[234])
3276             cpuflags="-mcpu=$cpu"
3277         ;;
3278     esac
3279
3280 elif enabled x86; then
3281
3282     case $cpu in
3283         i[345]86|pentium)
3284             cpuflags="-march=$cpu"
3285             disable i686
3286             disable mmx
3287         ;;
3288         # targets that do NOT support nopl and conditional mov (cmov)
3289         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3290             cpuflags="-march=$cpu"
3291             disable i686
3292         ;;
3293         # targets that do support nopl and conditional mov (cmov)
3294         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3295             cpuflags="-march=$cpu"
3296             enable i686
3297             enable fast_cmov
3298         ;;
3299         # targets that do support conditional mov but on which it's slow
3300         pentium4|pentium4m|prescott|nocona)
3301             cpuflags="-march=$cpu"
3302             enable i686
3303             disable fast_cmov
3304         ;;
3305     esac
3306
3307 fi
3308
3309 if [ "$cpu" != generic ]; then
3310     add_cflags  $cpuflags
3311     add_asflags $cpuflags
3312 fi
3313
3314 # compiler sanity check
3315 check_exec <<EOF
3316 int main(void){ return 0; }
3317 EOF
3318 if test "$?" != 0; then
3319     echo "$cc is unable to create an executable file."
3320     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3321         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3322         echo "Only do this if you know what cross compiling means."
3323     fi
3324     die "C compiler test failed."
3325 fi
3326
3327 add_cppflags -D_ISOC99_SOURCE
3328 check_cflags -std=c99
3329 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3330 #include <stdlib.h>
3331 EOF
3332 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3333 #include <stdlib.h>
3334 EOF
3335
3336 add_host_cppflags -D_ISOC99_SOURCE
3337 check_host_cflags -std=c99
3338 check_host_cflags -Wall
3339 check_host_cflags -O3
3340
3341 check_64bit(){
3342     arch32=$1
3343     arch64=$2
3344     expr=$3
3345     check_code cc "" "int test[2*($expr) - 1]" &&
3346         subarch=$arch64 || subarch=$arch32
3347 }
3348
3349 case "$arch" in
3350     aarch64|alpha|ia64)
3351         spic=$shared
3352     ;;
3353     mips)
3354         check_64bit mips mips64 '_MIPS_SIM > 1'
3355         spic=$shared
3356     ;;
3357     parisc)
3358         check_64bit parisc parisc64 'sizeof(void *) > 4'
3359         spic=$shared
3360     ;;
3361     ppc)
3362         check_64bit ppc ppc64 'sizeof(void *) > 4'
3363         spic=$shared
3364     ;;
3365     s390)
3366         check_64bit s390 s390x 'sizeof(void *) > 4'
3367         spic=$shared
3368     ;;
3369     sparc)
3370         check_64bit sparc sparc64 'sizeof(void *) > 4'
3371         spic=$shared
3372     ;;
3373     x86)
3374         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3375         if test "$subarch" = "x86_64"; then
3376             spic=$shared
3377         fi
3378     ;;
3379 esac
3380
3381 enable $subarch
3382 enabled spic && enable_weak pic
3383
3384 # OS specific
3385 case $target_os in
3386     aix)
3387         SHFLAGS=-shared
3388         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3389         enabled shared && add_ldflags -Wl,-brtl
3390         ;;
3391     android)
3392         disable symver
3393         SLIB_INSTALL_NAME='$(SLIBNAME)'
3394         SLIB_INSTALL_LINKS=
3395         # soname not set on purpose
3396         SHFLAGS=-shared
3397         ;;
3398     haiku)
3399         prefix_default="/boot/common"
3400         network_extralibs="-lnetwork"
3401         host_libs=
3402         ;;
3403     sunos)
3404         SHFLAGS='-shared -Wl,-h,$$(@F)'
3405         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3406         network_extralibs="-lsocket -lnsl"
3407         # When using suncc to build, the Solaris linker will mark
3408         # an executable with each instruction set encountered by
3409         # the Solaris assembler.  As our libraries contain their own
3410         # guards for processor-specific code, instead suppress
3411         # generation of the HWCAPS ELF section on Solaris x86 only.
3412         enabled_all suncc x86 &&
3413             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3414             add_ldflags -Wl,-M,mapfile
3415         nm_default='nm -P -g'
3416         ;;
3417     netbsd)
3418         disable symver
3419         oss_indev_extralibs="-lossaudio"
3420         oss_outdev_extralibs="-lossaudio"
3421         ;;
3422     openbsd|bitrig)
3423         disable symver
3424         SHFLAGS='-shared'
3425         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3426         SLIB_INSTALL_LINKS=
3427         oss_indev_extralibs="-lossaudio"
3428         oss_outdev_extralibs="-lossaudio"
3429         ;;
3430     dragonfly)
3431         disable symver
3432         ;;
3433     freebsd)
3434         ;;
3435     bsd/os)
3436         add_extralibs -lpoll -lgnugetopt
3437         ;;
3438     darwin)
3439         enabled ppc && add_asflags -force_cpusubtype_ALL
3440         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3441         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3442         add_ldflags -Wl,-dynamic,-search_paths_first
3443         SLIBSUF=".dylib"
3444         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3445         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3446         objformat="macho"
3447         enabled x86_64 && objformat="macho64"
3448         enabled_any pic shared ||
3449             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3450         ;;
3451     mingw32*)
3452         if test $target_os = "mingw32ce"; then
3453             disable network
3454         else
3455             target_os=mingw32
3456         fi
3457         LIBTARGET=i386
3458         if enabled x86_64; then
3459             LIBTARGET="i386:x86-64"
3460         elif enabled arm; then
3461             LIBTARGET=arm-wince
3462         fi
3463         check_ldflags -Wl,--nxcompat
3464         check_ldflags -Wl,--dynamicbase
3465         shlibdir_default="$bindir_default"
3466         SLIBPREF=""
3467         SLIBSUF=".dll"
3468         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3469         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3470         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3471         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3472         SLIB_INSTALL_LINKS=
3473         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3474         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3475         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3476         objformat="win32"
3477         dlltool="${cross_prefix}dlltool"
3478         ranlib=:
3479         enable dos_paths
3480         ;;
3481     win32|win64)
3482         disable symver
3483         if enabled shared; then
3484             # Link to the import library instead of the normal static library
3485             # for shared libs.
3486             LD_LIB='%.lib'
3487             # Cannot build both shared and static libs with MSVC or icl.
3488             disable static
3489         fi
3490         shlibdir_default="$bindir_default"
3491         SLIBPREF=""
3492         SLIBSUF=".dll"
3493         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3494         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3495         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3496         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3497         SLIB_INSTALL_LINKS=
3498         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3499         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3500         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3501         objformat="win32"
3502         ranlib=:
3503         enable dos_paths
3504         ;;
3505     cygwin*)
3506         target_os=cygwin
3507         shlibdir_default="$bindir_default"
3508         SLIBPREF="cyg"
3509         SLIBSUF=".dll"
3510         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3511         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3512         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3513         SLIB_INSTALL_LINKS=
3514         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3515         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3516         objformat="win32"
3517         enable dos_paths
3518         ;;
3519     *-dos|freedos|opendos)
3520         network_extralibs="-lsocket"
3521         objformat="coff"
3522         enable dos_paths
3523         add_cppflags -U__STRICT_ANSI__
3524         ;;
3525     linux)
3526         enable dv1394
3527         ;;
3528     irix*)
3529         target_os=irix
3530         ranlib="echo ignoring ranlib"
3531         ;;
3532     os/2*)
3533         ln_s="cp -f"
3534         objformat="aout"
3535         add_cppflags -D_GNU_SOURCE
3536         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3537         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3538         LIBSUF="_s.a"
3539         SLIBPREF=""
3540         SLIBSUF=".dll"
3541         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3542         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3543         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3544             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3545             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3546             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3547             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3548             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3549         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3550             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3551         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3552         enable dos_paths
3553         ;;
3554     gnu/kfreebsd)
3555         add_cppflags -D_BSD_SOURCE
3556         ;;
3557     gnu)
3558         ;;
3559     qnx)
3560         add_cppflags -D_QNX_SOURCE
3561         network_extralibs="-lsocket"
3562         ;;
3563     symbian)
3564         SLIBSUF=".dll"
3565         enable dos_paths
3566         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3567         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3568         add_ldflags -Wl,--target1-abs,--no-undefined \
3569                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3570                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3571         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3572                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3573                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3574         ;;
3575     osf1)
3576         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3577         ;;
3578     minix)
3579         ;;
3580     plan9)
3581         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3582                      -D_REENTRANT_SOURCE        \
3583                      -D_RESEARCH_SOURCE         \
3584                      -DFD_SETSIZE=96            \
3585                      -DHAVE_SOCK_OPTS
3586         add_compat strtod.o strtod=avpriv_strtod
3587         network_extralibs='-lbsd'
3588         exeobjs=compat/plan9/main.o
3589         cp_f='cp'
3590         ;;
3591     none)
3592         ;;
3593     *)
3594         die "Unknown OS '$target_os'."
3595         ;;
3596 esac
3597
3598 # determine libc flavour
3599
3600 probe_libc(){
3601     pfx=$1
3602     pfx_no_=${pfx%_}
3603     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3604     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3605         eval ${pfx}libc_type=uclibc
3606         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3607     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3608         eval ${pfx}libc_type=glibc
3609         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3610     # MinGW headers can be installed on Cygwin, so check for newlib first.
3611     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3612         eval ${pfx}libc_type=newlib
3613         add_${pfx}cppflags -U__STRICT_ANSI__
3614     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3615     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3616         eval ${pfx}libc_type=mingw64
3617         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3618         eval test \$${pfx_no_}cc_type = "gcc" &&
3619             add_${pfx}cppflags -D__printf__=__gnu_printf__
3620     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3621          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3622         eval ${pfx}libc_type=mingw32
3623         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3624             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3625             die "ERROR: MinGW32 runtime version must be >= 3.15."
3626         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3627         eval test \$${pfx_no_}cc_type = "gcc" &&
3628             add_${pfx}cppflags -D__printf__=__gnu_printf__
3629     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3630         eval ${pfx}libc_type=msvcrt
3631         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3632         # 0x601 by default unless something else is set by the user.
3633         # This can easily lead to us detecting functions only present
3634         # in such new versions and producing binaries requiring windows 7.0.
3635         # Therefore explicitly set the default to XP unless the user has
3636         # set something else on the command line.
3637         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3638             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3639     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3640         eval ${pfx}libc_type=klibc
3641     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3642         eval ${pfx}libc_type=bionic
3643     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3644         eval ${pfx}libc_type=solaris
3645         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3646     fi
3647 }
3648
3649 probe_libc
3650 test -n "$libc_type" && enable libc_$libc_type
3651 probe_libc host_
3652 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3653
3654 case $libc_type in
3655     bionic)
3656         add_compat strtod.o strtod=avpriv_strtod
3657         ;;
3658     msvcrt)
3659         add_compat strtod.o strtod=avpriv_strtod
3660         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3661                                      _snprintf=avpriv_snprintf  \
3662                                      vsnprintf=avpriv_vsnprintf
3663         ;;
3664 esac
3665
3666 # hacks for compiler/libc/os combinations
3667
3668 if enabled_all tms470 libc_glibc; then
3669     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3670     add_cppflags -D__USER_LABEL_PREFIX__=
3671     add_cppflags -D__builtin_memset=memset
3672     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3673     add_cflags   -pds=48    # incompatible redefinition of macro
3674 fi
3675
3676 if enabled_all ccc libc_glibc; then
3677     add_ldflags -Wl,-z,now  # calls to libots crash without this
3678 fi
3679
3680 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3681     add_cppflags '-I\$(SRC_PATH)/compat/float'
3682
3683 esc(){
3684     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3685 }
3686
3687 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3688
3689 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3690
3691 set_default $PATHS_LIST
3692 set_default nm
3693
3694 # we need to build at least one lib type
3695 if ! enabled_any static shared; then
3696     cat <<EOF
3697 At least one library type must be built.
3698 Specify --enable-static to build the static libraries or --enable-shared to
3699 build the shared libraries as well. To only build the shared libraries specify
3700 --disable-static in addition to --enable-shared.
3701 EOF
3702     exit 1;
3703 fi
3704
3705 die_license_disabled() {
3706     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3707 }
3708
3709 die_license_disabled gpl libcdio
3710 die_license_disabled gpl libx264
3711 die_license_disabled gpl libx265
3712 die_license_disabled gpl libxavs
3713 die_license_disabled gpl libxvid
3714 die_license_disabled gpl x11grab
3715
3716 die_license_disabled nonfree libfaac
3717 die_license_disabled nonfree libfdk_aac
3718 die_license_disabled nonfree openssl
3719
3720 die_license_disabled version3 libopencore_amrnb
3721 die_license_disabled version3 libopencore_amrwb
3722 die_license_disabled version3 libvo_aacenc
3723 die_license_disabled version3 libvo_amrwbenc
3724
3725 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3726
3727 disabled optimizations || check_cflags -fomit-frame-pointer
3728
3729 enable_weak_pic() {
3730     disabled pic && return
3731     enable pic
3732     add_cppflags -DPIC
3733     case "$target_os" in
3734     mingw*|cygwin*)
3735         ;;
3736     *)
3737         add_cflags -fPIC
3738         ;;
3739     esac
3740     add_asflags  -fPIC
3741 }
3742
3743 enabled pic && enable_weak_pic
3744
3745 check_cc <<EOF || die "Symbol mangling check failed."
3746 int ff_extern;
3747 EOF
3748 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3749 extern_prefix=${sym%%ff_extern*}
3750
3751 check_cc <<EOF && enable_weak inline_asm
3752 void foo(void) { __asm__ volatile ("" ::); }
3753 EOF
3754
3755 _restrict=
3756 for restrict_keyword in restrict __restrict__ __restrict; do
3757     check_cc <<EOF && _restrict=$restrict_keyword && break
3758 void foo(char * $restrict_keyword p);
3759 EOF
3760 done
3761
3762 check_cc <<EOF && enable pragma_deprecated
3763 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3764 EOF
3765
3766 check_cc <<EOF && enable attribute_packed
3767 struct { int x; } __attribute__((packed)) x;
3768 EOF
3769
3770 check_cc <<EOF && enable attribute_may_alias
3771 union { int x; } __attribute__((may_alias)) x;
3772 EOF
3773
3774 check_cc <<EOF || die "endian test failed"
3775 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3776 EOF
3777 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3778
3779 check_gas() {
3780     log "check_gas using '$as' as AS"
3781     # :vararg is used on aarch64, arm and ppc altivec
3782     check_as <<EOF || return 1
3783 .macro m n, y:vararg=0
3784 \n: .int \y
3785 .endm
3786 m x
3787 EOF
3788     # .altmacro is only used in arm asm
3789     ! enabled arm || check_as <<EOF || return 1
3790 .altmacro
3791 EOF
3792     enable gnu_as
3793     return 0
3794 }
3795
3796 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3797     nogas=:
3798     enabled_any arm aarch64 && nogas=die
3799     enabled_all ppc altivec && nogas=warn
3800     as_noop=-v
3801
3802     case $as_type in
3803         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3804         gcc)  gaspp_as_type=gas ;;
3805         *)    gaspp_as_type=$as_type ;;
3806     esac
3807
3808     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3809
3810     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3811         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3812
3813     if ! check_gas ; then
3814         as=${gas:=$as}
3815         check_gas || \
3816             $nogas "GNU assembler not found, install/update gas-preprocessor"
3817     fi
3818
3819     check_as <<EOF && enable as_func
3820 .func test
3821 .endfunc
3822 EOF
3823 fi
3824
3825 check_inline_asm inline_asm_labels '"1:\n"'
3826
3827 if enabled aarch64; then
3828     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3829     # internal assembler in clang 3.3 does not support this instruction
3830     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3831     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3832
3833     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3834
3835 elif enabled alpha; then
3836
3837     check_cflags -mieee
3838
3839 elif enabled arm; then
3840
3841     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3842     enabled thumb && check_cflags -mthumb || check_cflags -marm
3843
3844     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3845         enable vfp_args
3846     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3847         case "${cross_prefix:-$cc}" in
3848             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3849             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3850 __asm__ (".eabi_attribute 28, 1");
3851 int main(void) { return 0; }
3852 EOF
3853         esac
3854         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3855     fi
3856
3857     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3858     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3859     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3860     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3861     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3862     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3863
3864     [ $target_os = linux ] || [ $target_os = android ] ||
3865         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3866             $ARCH_EXT_LIST_ARM
3867
3868     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3869
3870     check_as <<EOF && enable as_dn_directive
3871 ra .dn d0.i16
3872 .unreq ra
3873 EOF
3874
3875     # llvm's integrated assembler supports .object_arch from llvm 3.5
3876     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
3877 .object_arch armv4
3878 EOF
3879
3880     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3881
3882 elif enabled mips; then
3883
3884     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3885
3886 elif enabled parisc; then
3887
3888     if enabled gcc; then
3889         case $($cc -dumpversion) in
3890             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3891         esac
3892     fi
3893
3894 elif enabled ppc; then
3895
3896     enable local_aligned_8 local_aligned_16
3897
3898     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3899     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3900     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3901     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3902
3903     # AltiVec flags: The FSF version of GCC differs from the Apple version
3904     if enabled altivec; then
3905         check_cflags -maltivec -mabi=altivec &&
3906         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3907         check_cflags -faltivec
3908
3909         # check if our compiler supports Motorola AltiVec C API
3910         check_cc <<EOF || disable altivec
3911 $inc_altivec_h
3912 int main(void) {
3913     vector signed int v1 = (vector signed int) { 0 };
3914     vector signed int v2 = (vector signed int) { 1 };
3915     v1 = vec_add(v1, v2);
3916     return 0;
3917 }
3918 EOF
3919
3920         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3921     fi
3922
3923 elif enabled x86; then
3924
3925     check_builtin rdtsc    intrin.h   "__rdtsc()"
3926     check_builtin mm_empty mmintrin.h "_mm_empty()"
3927
3928     enable local_aligned_8 local_aligned_16
3929
3930     # check whether EBP is available on x86
3931     # As 'i' is stored on the stack, this program will crash
3932     # if the base pointer is used to access it because the
3933     # base pointer is cleared in the inline assembly code.
3934     check_exec_crash <<EOF && enable ebp_available
3935 volatile int i=0;
3936 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3937 return i;
3938 EOF
3939
3940     # check whether EBX is available on x86
3941     check_inline_asm ebx_available '""::"b"(0)' &&
3942         check_inline_asm ebx_available '"":::"%ebx"'
3943
3944     # check whether xmm clobbers are supported
3945     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3946
3947     # check whether binutils is new enough to compile SSSE3/MMXEXT
3948     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3949     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3950
3951     if ! disabled_any asm mmx yasm; then
3952         if check_cmd $yasmexe --version; then
3953             enabled x86_64 && yasm_extra="-m amd64"
3954             yasm_debug="-g dwarf2"
3955         elif check_cmd nasm -v; then
3956             yasmexe=nasm
3957             yasm_debug="-g -F dwarf"
3958             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3959         fi
3960
3961         YASMFLAGS="-f $objformat $yasm_extra"
3962         enabled pic               && append YASMFLAGS "-DPIC"
3963         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3964         case "$objformat" in
3965             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3966         esac
3967
3968         check_yasm "movbe ecx, [5]" && enable yasm ||
3969             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3970         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3971         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3972         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3973         check_yasm "CPU amdnop" || disable cpunop
3974     fi
3975
3976     case "$cpu" in
3977         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3978             disable fast_clz
3979         ;;
3980     esac
3981
3982 fi
3983
3984 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
3985
3986 check_ldflags -Wl,--as-needed
3987
3988 if check_func dlopen; then
3989     ldl=
3990 elif check_func dlopen -ldl; then
3991     ldl=-ldl
3992 fi
3993
3994 if ! disabled network; then
3995     check_func getaddrinfo $network_extralibs
3996     check_func getservbyport $network_extralibs
3997     check_func inet_aton $network_extralibs
3998
3999     check_type netdb.h "struct addrinfo"
4000     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4001     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4002     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4003     check_type poll.h "struct pollfd"
4004     check_type netinet/sctp.h "struct sctp_event_subscribe"
4005     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4006     check_type netinet/in.h "struct sockaddr_in6"
4007     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4008     check_type "sys/types.h sys/socket.h" socklen_t
4009
4010     # Prefer arpa/inet.h over winsock2
4011     if check_header arpa/inet.h ; then
4012         check_func closesocket
4013     elif check_header winsock2.h ; then
4014         check_func_headers winsock2.h closesocket -lws2 &&
4015             network_extralibs="-lws2" ||
4016         { check_func_headers winsock2.h closesocket -lws2_32 &&
4017             network_extralibs="-lws2_32"; } || disable winsock2_h network
4018         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4019
4020         check_type ws2tcpip.h socklen_t
4021         check_type ws2tcpip.h "struct addrinfo"
4022         check_type ws2tcpip.h "struct group_source_req"
4023         check_type ws2tcpip.h "struct ip_mreq_source"
4024         check_type ws2tcpip.h "struct ipv6_mreq"
4025         check_type winsock2.h "struct pollfd"
4026         check_struct winsock2.h "struct sockaddr" sa_len
4027         check_type ws2tcpip.h "struct sockaddr_in6"
4028         check_type ws2tcpip.h "struct sockaddr_storage"
4029     else
4030         disable network
4031     fi
4032 fi
4033
4034 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4035 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4036 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4037 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4038
4039 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4040 check_func  ${malloc_prefix}memalign            && enable memalign
4041 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4042
4043 check_func  fcntl
4044 check_func  fork
4045 check_func  gethrtime
4046 check_func  getopt
4047 check_func  getrusage
4048 check_func  gettimeofday
4049 check_func  isatty
4050 check_func  localtime_r
4051 check_func  mach_absolute_time
4052 check_func  mkstemp
4053 check_func  mmap
4054 check_func  mprotect
4055 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4056 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4057 check_func  sched_getaffinity
4058 check_func  setrlimit
4059 check_func  strerror_r
4060 check_func  strptime
4061 check_func  sysconf
4062 check_func  sysctl
4063 check_func  usleep
4064
4065 check_func_headers io.h setmode
4066 check_func_headers stdlib.h getenv
4067
4068 check_func_headers windows.h CoTaskMemFree -lole32
4069 check_func_headers windows.h GetProcessAffinityMask
4070 check_func_headers windows.h GetProcessTimes
4071 check_func_headers windows.h GetSystemTimeAsFileTime
4072 check_func_headers windows.h MapViewOfFile
4073 check_func_headers windows.h SetConsoleTextAttribute
4074 check_func_headers windows.h Sleep
4075 check_func_headers windows.h VirtualAlloc
4076
4077 check_header direct.h
4078 check_header dlfcn.h
4079 check_header dxva.h
4080 check_header dxva2api.h
4081 check_header io.h
4082 check_header mach/mach_time.h
4083 check_header malloc.h
4084 check_header poll.h
4085 check_header sys/mman.h
4086 check_header sys/param.h
4087 check_header sys/resource.h
4088 check_header sys/select.h
4089 check_header sys/time.h
4090 check_header sys/un.h
4091 check_header unistd.h
4092 check_header vdpau/vdpau.h
4093 check_header vdpau/vdpau_x11.h
4094 check_header VideoDecodeAcceleration/VDADecoder.h
4095 check_header windows.h
4096 check_header X11/extensions/XvMClib.h
4097
4098 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4099 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4100 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4101
4102 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4103
4104 if ! disabled w32threads && ! enabled pthreads; then
4105     check_func_headers "windows.h process.h" _beginthreadex &&
4106         enable w32threads || disable w32threads
4107 fi
4108
4109 # check for some common methods of building with pthread support
4110 # do this before the optional library checks as some of them require pthreads
4111 if ! disabled pthreads && ! enabled w32threads; then
4112     enable pthreads
4113     if check_func pthread_join -pthread; then
4114         add_cflags -pthread
4115         add_extralibs -pthread
4116     elif check_func pthread_join -pthreads; then
4117         add_cflags -pthreads
4118         add_extralibs -pthreads
4119     elif check_func pthread_join -lpthreadGC2; then
4120         add_extralibs -lpthreadGC2
4121     elif check_lib pthread.h pthread_join -lpthread; then
4122         :
4123     elif ! check_func pthread_join; then
4124         disable pthreads
4125     fi
4126 fi
4127
4128 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4129 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4130
4131 check_lib math.h sin -lm && LIBM="-lm"
4132 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4133
4134 atan2f_args=2
4135 ldexpf_args=2
4136 powf_args=2
4137
4138 for func in $MATH_FUNCS; do
4139     eval check_mathfunc $func \${${func}_args:-1}
4140 done
4141
4142 # these are off by default, so fail if requested and not available
4143 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4144                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4145                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4146 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4147 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4148 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4149 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4150 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4151 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4152 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4153 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4154                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4155                                done || die "ERROR: libgsm not found"; }
4156 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4157 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4158 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4159 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4160 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4161 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4162                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4163 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4164 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4165 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4166 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4167 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4168 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4169 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4170 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4171 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4172 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4173 enabled libvpx            && {
4174     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4175                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4176     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4177                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4178     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4179     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4180 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4181 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4182 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4183                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4184                                die "ERROR: libx264 version must be >= 0.118."; }
4185 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4186                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4187                                die "ERROR: libx265 version must be >= 17."; }
4188 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4189 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4190 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4191                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4192                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4193                                die "ERROR: openssl not found"; }
4194
4195 if enabled gnutls; then
4196     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4197     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4198 fi
4199
4200 # libdc1394 check
4201 if enabled libdc1394; then
4202     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4203         enable libdc1394_2; } ||
4204     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4205         enable libdc1394_1; } ||
4206     die "ERROR: No version of libdc1394 found "
4207 fi
4208
4209 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4210     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4211     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4212     enable sdl
4213 fi
4214
4215 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4216 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4217
4218 check_header linux/fb.h
4219 check_header linux/videodev2.h
4220 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4221
4222 check_header sys/videoio.h
4223
4224 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4225 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4226 # w32api 3.12 had it defined wrong
4227 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4228
4229 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4230 { check_header dev/bktr/ioctl_meteor.h &&
4231   check_header dev/bktr/ioctl_bt848.h; } ||
4232 { check_header machine/ioctl_meteor.h &&
4233   check_header machine/ioctl_bt848.h; } ||
4234 { check_header dev/video/meteor/ioctl_meteor.h &&
4235   check_header dev/video/bktr/ioctl_bt848.h; } ||
4236 check_header dev/ic/bt8xx.h
4237
4238 check_header sndio.h
4239 check_header sys/soundcard.h
4240 check_header soundcard.h
4241
4242 enabled_any alsa_indev alsa_outdev &&
4243     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4244
4245 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4246     check_func jack_port_get_latency_range -ljack
4247
4248 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4249
4250 if enabled libcdio; then
4251     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4252     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4253     die "ERROR: No usable libcdio/cdparanoia found"
4254 fi
4255
4256 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4257
4258 enabled x11grab                                           &&
4259 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4260 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4261 { enabled xlib || die "ERROR: Xlib not found"; }
4262
4263 enabled vdpau &&
4264     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4265     disable vdpau
4266
4267 enabled vdpau && enabled xlib &&
4268     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4269     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4270     enable vdpau_x11
4271
4272 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4273
4274 # add some useful compiler flags if supported
4275 check_cflags -Wdeclaration-after-statement
4276 check_cflags -Wall
4277 check_cflags -Wdisabled-optimization
4278 check_cflags -Wpointer-arith
4279 check_cflags -Wredundant-decls
4280 check_cflags -Wcast-qual
4281 check_cflags -Wwrite-strings
4282 check_cflags -Wtype-limits
4283 check_cflags -Wundef
4284 check_cflags -Wmissing-prototypes
4285 check_cflags -Wstrict-prototypes
4286 enabled extra_warnings && check_cflags -Winline
4287
4288 check_disable_warning(){
4289     warning_flag=-W${1#-Wno-}
4290     test_cflags $warning_flag && add_cflags $1
4291 }
4292
4293 check_disable_warning -Wno-parentheses
4294 check_disable_warning -Wno-switch
4295 check_disable_warning -Wno-format-zero-length
4296 check_disable_warning -Wno-pointer-sign
4297
4298 # add some linker flags
4299 check_ldflags -Wl,--warn-common
4300 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4301 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4302
4303 # add some strip flags
4304 # -wN '..@*' is more selective than -x, but not available everywhere.
4305 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4306
4307 enabled neon_clobber_test &&
4308     check_ldflags -Wl,--wrap,avcodec_open2              \
4309                   -Wl,--wrap,avcodec_decode_audio4      \
4310                   -Wl,--wrap,avcodec_decode_video2      \
4311                   -Wl,--wrap,avcodec_decode_subtitle2   \
4312                   -Wl,--wrap,avcodec_encode_audio2      \
4313                   -Wl,--wrap,avcodec_encode_video2      \
4314                   -Wl,--wrap,avcodec_encode_subtitle    \
4315                   -Wl,--wrap,avresample_convert ||
4316     disable neon_clobber_test
4317
4318 enabled xmm_clobber_test &&
4319     check_ldflags -Wl,--wrap,avcodec_open2              \
4320                   -Wl,--wrap,avcodec_decode_audio4      \
4321                   -Wl,--wrap,avcodec_decode_video2      \
4322                   -Wl,--wrap,avcodec_decode_subtitle2   \
4323                   -Wl,--wrap,avcodec_encode_audio2      \
4324                   -Wl,--wrap,avcodec_encode_video2      \
4325                   -Wl,--wrap,avcodec_encode_subtitle    \
4326                   -Wl,--wrap,avresample_convert         \
4327                   -Wl,--wrap,sws_scale ||
4328     disable xmm_clobber_test
4329
4330 echo "X{};" > $TMPV
4331 if test_ldflags -Wl,--version-script,$TMPV; then
4332     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4333     check_cc <<EOF && enable symver_asm_label
4334 void ff_foo(void) __asm__ ("av_foo@VERSION");
4335 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4336 EOF
4337     check_cc <<EOF && enable symver_gnu_asm
4338 __asm__(".symver ff_foo,av_foo@VERSION");
4339 void ff_foo(void) {}
4340 EOF
4341 fi
4342
4343 if [ -z "$optflags" ]; then
4344     if enabled small; then
4345         optflags=$cflags_size
4346     elif enabled optimizations; then
4347         optflags=$cflags_speed
4348     else
4349         optflags=$cflags_noopt
4350     fi
4351 fi
4352
4353 check_optflags(){
4354     check_cflags "$@"
4355     enabled lto && check_ldflags "$@"
4356 }
4357
4358
4359 if enabled lto; then
4360     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4361     check_cflags  -flto
4362     check_ldflags -flto $cpuflags
4363 fi
4364
4365 check_optflags $optflags
4366 check_optflags -fno-math-errno
4367 check_optflags -fno-signed-zeros
4368
4369 if enabled icc; then
4370     # Just warnings, no remarks
4371     check_cflags -w1
4372     # -wd: Disable following warnings
4373     # 144, 167, 556: -Wno-pointer-sign
4374     # 1292: attribute "foo" ignored
4375     # 1419: external declaration in primary source file
4376     # 10006: ignoring unknown option -fno-signed-zeros
4377     # 10148: ignoring unknown option -Wno-parentheses
4378     # 10156: ignoring option '-W'; no argument required
4379     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4380     # 11030: Warning unknown option --as-needed
4381     # 10156: ignoring option '-export'; no argument required
4382     check_ldflags -wd10156,11030
4383     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4384     enable ebp_available
4385     if enabled x86_32; then
4386         icc_version=$($cc -dumpversion)
4387         test ${icc_version%%.*} -ge 11 &&
4388             check_cflags -falign-stack=maintain-16-byte ||
4389             disable aligned_stack
4390     fi
4391 elif enabled ccc; then
4392     # disable some annoying warnings
4393     add_cflags -msg_disable bitnotint
4394     add_cflags -msg_disable mixfuncvoid
4395     add_cflags -msg_disable nonstandcast
4396     add_cflags -msg_disable unsupieee
4397 elif enabled gcc; then
4398     check_optflags -fno-tree-vectorize
4399     check_cflags -Werror=implicit-function-declaration
4400     check_cflags -Werror=missing-prototypes
4401     check_cflags -Werror=return-type
4402     check_cflags -Werror=declaration-after-statement
4403     check_cflags -Werror=vla
4404     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4405 elif enabled llvm_gcc; then
4406     check_cflags -mllvm -stack-alignment=16
4407 elif enabled clang; then
4408     check_cflags -mllvm -stack-alignment=16
4409     check_cflags -Qunused-arguments
4410     check_cflags -Werror=implicit-function-declaration
4411     check_cflags -Werror=missing-prototypes
4412     check_cflags -Werror=return-type
4413 elif enabled cparser; then
4414     add_cflags -Wno-missing-variable-declarations
4415     add_cflags -Wno-empty-statement
4416 elif enabled armcc; then
4417     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4418     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4419     # 2523: use of inline assembly is deprecated
4420     add_cflags -W${armcc_opt},--diag_suppress=2523
4421     add_cflags -W${armcc_opt},--diag_suppress=1207
4422     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4423     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4424     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4425     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4426 elif enabled tms470; then
4427     add_cflags -pds=824 -pds=837
4428     disable inline_asm
4429 elif enabled pathscale; then
4430     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4431 elif enabled_any msvc icl; then
4432     enabled x86_32 && disable aligned_stack
4433     enabled_all x86_32 debug && add_cflags -Oy-
4434     enabled debug && add_ldflags -debug
4435     enable pragma_deprecated
4436     if enabled icl; then
4437         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4438         # (correctly) on icl 13.x.
4439         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4440             add_cflags -Qansi-alias
4441         # icl will pass the inline asm tests but inline asm is currently
4442         # not supported (build will fail)
4443         disable inline_asm
4444     fi
4445 fi
4446
4447 case $as_type in
4448     clang)
4449         add_asflags -Qunused-arguments
4450     ;;
4451 esac
4452
4453 case $ld_type in
4454     clang)
4455         check_ldflags -Qunused-arguments
4456     ;;
4457 esac
4458
4459 case $target_os in
4460     osf1)
4461         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4462     ;;
4463     plan9)
4464         add_cppflags -Dmain=plan9_main
4465     ;;
4466 esac
4467
4468 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4469
4470 check_deps $CONFIG_LIST       \
4471            $CONFIG_EXTRA      \
4472            $HAVE_LIST         \
4473            $ALL_COMPONENTS    \
4474
4475 enabled_all dxva2 CoTaskMemFree &&
4476     prepend avconv_libs $($ldflags_filter "-lole32") &&
4477     enable dxva2_lib
4478
4479 ! enabled_any memalign posix_memalign aligned_malloc &&
4480     enabled simd_align_16 && enable memalign_hack
4481
4482 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
4483
4484 for thread in $THREADS_LIST; do
4485     if enabled $thread; then
4486         test -n "$thread_type" &&
4487             die "ERROR: Only one thread type must be selected." ||
4488             thread_type="$thread"
4489     fi
4490 done
4491
4492 enabled zlib && add_cppflags -DZLIB_CONST
4493
4494 # conditional library dependencies, in linking order
4495 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4496 enabled resample_filter && prepend avfilter_deps "avresample"
4497 enabled scale_filter    && prepend avfilter_deps "swscale"
4498
4499 enabled opus_decoder    && prepend avcodec_deps "avresample"
4500
4501 expand_deps(){
4502     lib_deps=${1}_deps
4503     eval "deps=\$$lib_deps"
4504     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4505     unique $lib_deps
4506 }
4507
4508 map 'expand_deps $v' $LIBRARY_LIST
4509
4510 echo "install prefix            $prefix"
4511 echo "source path               $source_path"
4512 echo "C compiler                $cc"
4513 echo "C library                 $libc_type"
4514 if test "$host_cc" != "$cc"; then
4515     echo "host C compiler           $host_cc"
4516     echo "host C library            $host_libc_type"
4517 fi
4518 echo "ARCH                      $arch ($cpu)"
4519 if test "$build_suffix" != ""; then
4520     echo "build suffix              $build_suffix"
4521 fi
4522 if test "$extra_version" != ""; then
4523     echo "version string suffix     $extra_version"
4524 fi
4525 echo "big-endian                ${bigendian-no}"
4526 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4527 if enabled x86; then
4528     echo "${yasmexe}                      ${yasm-no}"
4529     echo "MMX enabled               ${mmx-no}"
4530     echo "MMXEXT enabled            ${mmxext-no}"
4531     echo "3DNow! enabled            ${amd3dnow-no}"
4532     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4533     echo "SSE enabled               ${sse-no}"
4534     echo "SSSE3 enabled             ${ssse3-no}"
4535     echo "AVX enabled               ${avx-no}"
4536     echo "XOP enabled               ${xop-no}"
4537     echo "FMA3 enabled              ${fma3-no}"
4538     echo "FMA4 enabled              ${fma4-no}"
4539     echo "i686 features enabled     ${i686-no}"
4540     echo "CMOV is fast              ${fast_cmov-no}"
4541     echo "EBX available             ${ebx_available-no}"
4542     echo "EBP available             ${ebp_available-no}"
4543 fi
4544 if enabled aarch64; then
4545     echo "NEON enabled              ${neon-no}"
4546     echo "VFP enabled               ${vfp-no}"
4547 fi
4548 if enabled arm; then
4549     echo "ARMv5TE enabled           ${armv5te-no}"
4550     echo "ARMv6 enabled             ${armv6-no}"
4551     echo "ARMv6T2 enabled           ${armv6t2-no}"
4552     echo "VFP enabled               ${vfp-no}"
4553     echo "NEON enabled              ${neon-no}"
4554 fi
4555 if enabled ppc; then
4556     echo "AltiVec enabled           ${altivec-no}"
4557     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4558     echo "dcbzl available           ${dcbzl-no}"
4559 fi
4560 echo "debug symbols             ${debug-no}"
4561 echo "optimize for size         ${small-no}"
4562 echo "optimizations             ${optimizations-no}"
4563 echo "static                    ${static-no}"
4564 echo "shared                    ${shared-no}"
4565 echo "new filter support        ${avfilter-no}"
4566 echo "network support           ${network-no}"
4567 echo "threading support         ${thread_type-no}"
4568 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4569 echo "SDL support               ${sdl-no}"
4570 test -n "$random_seed" &&
4571     echo "random seed               ${random_seed}"
4572 echo
4573
4574 echo "External libraries:"
4575 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4576 echo
4577
4578 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4579     echo "Enabled ${type}s:"
4580     eval list=\$$(toupper $type)_LIST
4581     print_enabled '_*' $list | print_3_columns
4582     echo
4583 done
4584
4585 license="LGPL version 2.1 or later"
4586 if enabled nonfree; then
4587     license="nonfree and unredistributable"
4588 elif enabled gplv3; then
4589     license="GPL version 3 or later"
4590 elif enabled lgplv3; then
4591     license="LGPL version 3 or later"
4592 elif enabled gpl; then
4593     license="GPL version 2 or later"
4594 fi
4595
4596 echo "License: $license"
4597
4598 echo "Creating config.mak and config.h..."
4599
4600 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4601
4602 config_files="$TMPH config.mak"
4603
4604 cat > config.mak <<EOF
4605 # Automatically generated by configure - do not modify!
4606 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4607 prefix=$prefix
4608 LIBDIR=\$(DESTDIR)$libdir
4609 SHLIBDIR=\$(DESTDIR)$shlibdir
4610 INCDIR=\$(DESTDIR)$incdir
4611 BINDIR=\$(DESTDIR)$bindir
4612 DATADIR=\$(DESTDIR)$datadir
4613 DOCDIR=\$(DESTDIR)$docdir
4614 MANDIR=\$(DESTDIR)$mandir
4615 SRC_PATH=$source_path
4616 CC_IDENT=$cc_ident
4617 ARCH=$arch
4618 INTRINSICS=$intrinsics
4619 CC=$cc
4620 AS=$as
4621 LD=$ld
4622 DEPCC=$dep_cc
4623 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4624 DEPAS=$as
4625 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4626 YASM=$yasmexe
4627 DEPYASM=$yasmexe
4628 AR=$ar
4629 ARFLAGS=$arflags
4630 AR_O=$ar_o
4631 RANLIB=$ranlib
4632 STRIP=$strip
4633 LN_S=$ln_s
4634 CPPFLAGS=$CPPFLAGS
4635 CFLAGS=$CFLAGS
4636 ASFLAGS=$ASFLAGS
4637 AS_C=$AS_C
4638 AS_O=$AS_O
4639 CC_C=$CC_C
4640 CC_E=$CC_E
4641 CC_O=$CC_O
4642 LD_O=$LD_O
4643 LD_LIB=$LD_LIB
4644 LD_PATH=$LD_PATH
4645 DLLTOOL=$dlltool
4646 LDFLAGS=$LDFLAGS
4647 LDEXEFLAGS=$LDEXEFLAGS
4648 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4649 STRIPFLAGS=$STRIPFLAGS
4650 YASMFLAGS=$YASMFLAGS
4651 BUILDSUF=$build_suffix
4652 FULLNAME=$FULLNAME
4653 LIBPREF=$LIBPREF
4654 LIBSUF=$LIBSUF
4655 LIBNAME=$LIBNAME
4656 SLIBPREF=$SLIBPREF
4657 SLIBSUF=$SLIBSUF
4658 EXESUF=$EXESUF
4659 EXTRA_VERSION=$extra_version
4660 CCDEP=$CCDEP
4661 CCDEP_FLAGS=$CCDEP_FLAGS
4662 ASDEP=$ASDEP
4663 ASDEP_FLAGS=$ASDEP_FLAGS
4664 CC_DEPFLAGS=$CC_DEPFLAGS
4665 AS_DEPFLAGS=$AS_DEPFLAGS
4666 HOSTCC=$host_cc
4667 HOSTLD=$host_ld
4668 HOSTCFLAGS=$host_cflags
4669 HOSTCPPFLAGS=$host_cppflags
4670 HOSTEXESUF=$HOSTEXESUF
4671 HOSTLDFLAGS=$host_ldflags
4672 HOSTLIBS=$host_libs
4673 DEPHOSTCC=$host_cc
4674 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4675 HOSTCCDEP=$HOSTCCDEP
4676 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4677 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4678 HOSTCC_C=$HOSTCC_C
4679 HOSTCC_O=$HOSTCC_O
4680 HOSTLD_O=$HOSTLD_O
4681 TARGET_EXEC=$target_exec $target_exec_args
4682 TARGET_PATH=$target_path
4683 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4684 CFLAGS-avplay=$sdl_cflags
4685 ZLIB=$($ldflags_filter -lz)
4686 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4687 EXTRALIBS=$extralibs
4688 COMPAT_OBJS=$compat_objs
4689 EXEOBJS=$exeobjs
4690 INSTALL=install
4691 LIBTARGET=${LIBTARGET}
4692 SLIBNAME=${SLIBNAME}
4693 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4694 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4695 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4696 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4697 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4698 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4699 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4700 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4701 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4702 EOF
4703
4704 get_version(){
4705     lcname=lib${1}
4706     name=$(toupper $lcname)
4707     file=$source_path/$lcname/version.h
4708     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4709     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4710     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4711     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4712     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4713 }
4714
4715 map 'get_version $v' $LIBRARY_LIST
4716
4717 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4718
4719 print_program_libs(){
4720     eval "program_libs=\$${1}_libs"
4721     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4722 }
4723
4724 map 'print_program_libs $v' $PROGRAM_LIST
4725
4726 cat > $TMPH <<EOF
4727 /* Automatically generated by configure - do not modify! */
4728 #ifndef LIBAV_CONFIG_H
4729 #define LIBAV_CONFIG_H
4730 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4731 #define LIBAV_LICENSE "$(c_escape $license)"
4732 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4733 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4734 #define restrict $_restrict
4735 #define EXTERN_PREFIX "${extern_prefix}"
4736 #define EXTERN_ASM ${extern_prefix}
4737 #define SLIBSUF "$SLIBSUF"
4738 EOF
4739
4740 test -n "$malloc_prefix" &&
4741     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4742
4743 if enabled yasm; then
4744     append config_files $TMPASM
4745     printf '' >$TMPASM
4746 fi
4747
4748 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4749
4750 print_config ARCH_   "$config_files" $ARCH_LIST
4751 print_config HAVE_   "$config_files" $HAVE_LIST
4752 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4753                                      $CONFIG_EXTRA      \
4754                                      $ALL_COMPONENTS    \
4755
4756 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4757
4758 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4759 cp_if_changed $TMPH config.h
4760 touch .config
4761
4762 enabled yasm && cp_if_changed $TMPASM config.asm
4763
4764 cat > $TMPH <<EOF
4765 /* Generated by ffconf */
4766 #ifndef AVUTIL_AVCONFIG_H
4767 #define AVUTIL_AVCONFIG_H
4768 EOF
4769
4770 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4771
4772 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4773
4774 cp_if_changed $TMPH libavutil/avconfig.h
4775
4776 test -n "$WARNINGS" && printf "\n$WARNINGS"
4777
4778 # build pkg-config files
4779
4780 lib_version(){
4781     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4782 }
4783
4784 pkgconfig_generate(){
4785     name=$1
4786     shortname=${name#lib}${build_suffix}
4787     comment=$2
4788     version=$3
4789     libs=$4
4790     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
4791     requires=${requires%, }
4792     enabled ${name#lib} || return 0
4793     mkdir -p $name
4794     cat <<EOF > $name/$name.pc
4795 prefix=$prefix
4796 exec_prefix=\${prefix}
4797 libdir=$libdir
4798 includedir=$incdir
4799
4800 Name: $name
4801 Description: $comment
4802 Version: $version
4803 Requires: $(enabled shared || echo $requires)
4804 Requires.private: $(enabled shared && echo $requires)
4805 Conflicts:
4806 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4807 Libs.private: $(enabled shared && echo $libs)
4808 Cflags: -I\${includedir}
4809 EOF
4810     cat <<EOF > $name/$name-uninstalled.pc
4811 prefix=
4812 exec_prefix=
4813 libdir=\${pcfiledir}
4814 includedir=${source_path}
4815
4816 Name: $name
4817 Description: $comment
4818 Version: $version
4819 Requires: $requires
4820 Conflicts:
4821 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4822 Cflags: -I\${includedir}
4823 EOF
4824 }
4825
4826 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4827 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
4828 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
4829 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
4830 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
4831 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$LIBM"
4832 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"