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

   1 #!/bin/sh
   2 #
   3 # Libav configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken Libav."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --prefix=PREFIX          install in PREFIX [$prefix]
  82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
  84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
  85   --libdir=DIR             install libs in DIR [PREFIX/lib]
  86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  87   --incdir=DIR             install includes in DIR [PREFIX/include]
  88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  89
  90 Licensing options:
  91   --enable-gpl             allow use of GPL code, the resulting libs
  92                            and binaries will be under GPL [no]
  93   --enable-version3        upgrade (L)GPL to version 3 [no]
  94   --enable-nonfree         allow use of nonfree code, the resulting libs
  95                            and binaries will be unredistributable [no]
  96
  97 Configuration options:
  98   --disable-static         do not build static libraries [no]
  99   --enable-shared          build shared libraries [no]
 100   --enable-small           optimize for size instead of speed
 101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
 102   --enable-gray            enable full grayscale support (slower color)
 103   --disable-swscale-alpha  disable alpha channel support in swscale
 104   --disable-all            disable building components, libraries and programs
 105
 106 Program options:
 107   --disable-programs       do not build command line programs
 108   --disable-avconv         disable avconv build
 109   --disable-avplay         disable avplay build
 110   --disable-avprobe        disable avprobe build
 111   --disable-avserver       disable avserver build
 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 decoding 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 [$target_os]
 226   --target-exec=CMD        command to run executables on target
 227   --target-path=DIR        path to view of build directory on target
 228   --target-samples=DIR     path to samples directory on target
 229   --toolchain=NAME         set tool defaults according to NAME
 230   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 231   --nm=NM                  use nm tool
 232   --ar=AR                  use archive tool AR [$ar_default]
 233   --as=AS                  use assembler AS [$as_default]
 234   --cc=CC                  use C compiler CC [$cc_default]
 235   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 236   --ld=LD                  use linker LD
 237   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
 238   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 239   --host-cc=HOSTCC         use host C compiler HOSTCC
 240   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 241   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 242   --host-ld=HOSTLD         use host linker HOSTLD
 243   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 244   --host-libs=HLIBS        use libs HLIBS when linking for host
 245   --host-os=OS             compiler host OS [$target_os]
 246   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 247   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 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 assembler 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 assembler
 290   --disable-yasm           disable use of yasm assembler
 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 "$@")
 681 }
 682
 683 add_stripflags(){
 684     append STRIPFLAGS "$@"
 685 }
 686
 687 add_extralibs(){
 688     prepend extralibs $($ldflags_filter "$@")
 689 }
 690
 691 add_host_cppflags(){
 692     append host_cppflags "$@"
 693 }
 694
 695 add_host_cflags(){
 696     append host_cflags $($host_cflags_filter "$@")
 697 }
 698
 699 add_host_ldflags(){
 700     append host_ldflags $($host_ldflags_filter "$@")
 701 }
 702
 703 add_compat(){
 704     append compat_objs $1
 705     shift
 706     map 'add_cppflags -D$v' "$@"
 707 }
 708
 709 check_cmd(){
 710     log "$@"
 711     "$@" >> $logfile 2>&1
 712 }
 713
 714 cc_o(){
 715     eval printf '%s\\n' $CC_O
 716 }
 717
 718 cc_e(){
 719     eval printf '%s\\n' $CC_E
 720 }
 721
 722 check_cc(){
 723     log check_cc "$@"
 724     cat > $TMPC
 725     log_file $TMPC
 726     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 727 }
 728
 729 check_cpp(){
 730     log check_cpp "$@"
 731     cat > $TMPC
 732     log_file $TMPC
 733     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 734 }
 735
 736 as_o(){
 737     eval printf '%s\\n' $AS_O
 738 }
 739
 740 check_as(){
 741     log check_as "$@"
 742     cat > $TMPS
 743     log_file $TMPS
 744     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 745 }
 746
 747 check_inline_asm(){
 748     log check_inline_asm "$@"
 749     name="$1"
 750     code="$2"
 751     shift 2
 752     disable $name
 753     check_cc "$@" <<EOF && enable $name
 754 void foo(void){ __asm__ volatile($code); }
 755 EOF
 756 }
 757
 758 check_insn(){
 759     log check_insn "$@"
 760     check_inline_asm ${1}_inline "\"$2\""
 761     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 762 }
 763
 764 check_yasm(){
 765     log check_yasm "$@"
 766     echo "$1" > $TMPS
 767     log_file $TMPS
 768     shift 1
 769     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 770 }
 771
 772 ld_o(){
 773     eval printf '%s\\n' $LD_O
 774 }
 775
 776 check_ld(){
 777     log check_ld "$@"
 778     flags=$(filter_out '-l*' "$@")
 779     libs=$(filter '-l*' "$@")
 780     check_cc $($cflags_filter $flags) || return
 781     flags=$($ldflags_filter $flags)
 782     libs=$($ldflags_filter $libs)
 783     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 784 }
 785
 786 print_include(){
 787     hdr=$1
 788     test "${hdr%.h}" = "${hdr}" &&
 789         echo "#include $hdr"    ||
 790         echo "#include <$hdr>"
 791 }
 792
 793 check_code(){
 794     log check_code "$@"
 795     check=$1
 796     headers=$2
 797     code=$3
 798     shift 3
 799     {
 800         for hdr in $headers; do
 801             print_include $hdr
 802         done
 803         echo "int main(void) { $code; return 0; }"
 804     } | check_$check "$@"
 805 }
 806
 807 check_cppflags(){
 808     log check_cppflags "$@"
 809     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 810 int x;
 811 EOF
 812 }
 813
 814 test_cflags(){
 815     log test_cflags "$@"
 816     set -- $($cflags_filter "$@")
 817     check_cc "$@" <<EOF
 818 int x;
 819 EOF
 820 }
 821
 822 check_cflags(){
 823     log check_cflags "$@"
 824     test_cflags "$@" && add_cflags "$@"
 825 }
 826
 827 test_ldflags(){
 828     log test_ldflags "$@"
 829     check_ld "$@" <<EOF
 830 int main(void){ return 0; }
 831 EOF
 832 }
 833
 834 check_ldflags(){
 835     log check_ldflags "$@"
 836     test_ldflags "$@" && add_ldflags "$@"
 837 }
 838
 839 test_stripflags(){
 840     log test_stripflags "$@"
 841     # call check_cc to get a fresh TMPO
 842     check_cc <<EOF
 843 int main(void) { return 0; }
 844 EOF
 845     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 846 }
 847
 848 check_stripflags(){
 849     log check_stripflags "$@"
 850     test_stripflags "$@" && add_stripflags "$@"
 851 }
 852
 853 check_header(){
 854     log check_header "$@"
 855     header=$1
 856     shift
 857     disable_safe $header
 858     check_cpp "$@" <<EOF && enable_safe $header
 859 #include <$header>
 860 int x;
 861 EOF
 862 }
 863
 864 check_func(){
 865     log check_func "$@"
 866     func=$1
 867     shift
 868     disable $func
 869     check_ld "$@" <<EOF && enable $func
 870 extern int $func();
 871 int main(void){ $func(); }
 872 EOF
 873 }
 874
 875 check_mathfunc(){
 876     log check_mathfunc "$@"
 877     func=$1
 878     narg=$2
 879     shift 2
 880     test $narg = 2 && args="f, g" || args="f"
 881     disable $func
 882     check_ld "$@" <<EOF && enable $func
 883 #include <math.h>
 884 float foo(float f, float g) { return $func($args); }
 885 int main(void){ return 0; }
 886 EOF
 887 }
 888
 889 check_func_headers(){
 890     log check_func_headers "$@"
 891     headers=$1
 892     funcs=$2
 893     shift 2
 894     {
 895         for hdr in $headers; do
 896             print_include $hdr
 897         done
 898         for func in $funcs; do
 899             echo "long check_$func(void) { return (long) $func; }"
 900         done
 901         echo "int main(void) { return 0; }"
 902     } | check_ld "$@" && enable $funcs && enable_safe $headers
 903 }
 904
 905 check_cpp_condition(){
 906     log check_cpp_condition "$@"
 907     header=$1
 908     condition=$2
 909     shift 2
 910     check_cpp "$@" <<EOF
 911 #include <$header>
 912 #if !($condition)
 913 #error "unsatisfied condition: $condition"
 914 #endif
 915 EOF
 916 }
 917
 918 check_lib(){
 919     log check_lib "$@"
 920     header="$1"
 921     func="$2"
 922     shift 2
 923     check_header $header && check_func $func "$@" && add_extralibs "$@"
 924 }
 925
 926 check_lib2(){
 927     log check_lib2 "$@"
 928     headers="$1"
 929     funcs="$2"
 930     shift 2
 931     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 932 }
 933
 934 check_pkg_config(){
 935     log check_pkg_config "$@"
 936     pkg="$1"
 937     headers="$2"
 938     funcs="$3"
 939     shift 3
 940     check_cmd $pkg_config --exists --print-errors $pkg || return
 941     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
 942     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
 943     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 944         set_safe ${pkg}_cflags $pkg_cflags   &&
 945         set_safe ${pkg}_libs   $pkg_libs
 946 }
 947
 948 check_exec(){
 949     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 950 }
 951
 952 check_exec_crash(){
 953     code=$(cat)
 954
 955     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 956     # are safe but may not be available everywhere.  Thus we use
 957     # raise(SIGTERM) instead.  The check is run in a subshell so we
 958     # can redirect the "Terminated" message from the shell.  SIGBUS
 959     # is not defined by standard C so it is used conditionally.
 960
 961     (check_exec "$@") >> $logfile 2>&1 <<EOF
 962 #include <signal.h>
 963 static void sighandler(int sig){
 964     raise(SIGTERM);
 965 }
 966 int foo(void){
 967     $code
 968 }
 969 int (*func_ptr)(void) = foo;
 970 int main(void){
 971     signal(SIGILL, sighandler);
 972     signal(SIGFPE, sighandler);
 973     signal(SIGSEGV, sighandler);
 974 #ifdef SIGBUS
 975     signal(SIGBUS, sighandler);
 976 #endif
 977     return func_ptr();
 978 }
 979 EOF
 980 }
 981
 982 check_type(){
 983     log check_type "$@"
 984     headers=$1
 985     type=$2
 986     shift 2
 987     disable_safe "$type"
 988     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
 989 }
 990
 991 check_struct(){
 992     log check_struct "$@"
 993     headers=$1
 994     struct=$2
 995     member=$3
 996     shift 3
 997     disable_safe "${struct}_${member}"
 998     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
 999         enable_safe "${struct}_${member}"
1000 }
1001
1002 check_builtin(){
1003     log check_builtin "$@"
1004     name=$1
1005     headers=$2
1006     builtin=$3
1007     shift 3
1008     disable "$name"
1009     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1010 }
1011
1012 check_compile_assert(){
1013     log check_compile_assert "$@"
1014     name=$1
1015     headers=$2
1016     condition=$3
1017     shift 3
1018     disable "$name"
1019     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1020 }
1021
1022 require(){
1023     name="$1"
1024     header="$2"
1025     func="$3"
1026     shift 3
1027     check_lib $header $func "$@" || die "ERROR: $name not found"
1028 }
1029
1030 require2(){
1031     name="$1"
1032     headers="$2"
1033     func="$3"
1034     shift 3
1035     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1036 }
1037
1038 require_pkg_config(){
1039     pkg="$1"
1040     check_pkg_config "$@" || die "ERROR: $pkg not found"
1041     add_cflags    $(get_safe ${pkg}_cflags)
1042     add_extralibs $(get_safe ${pkg}_libs)
1043 }
1044
1045 hostcc_e(){
1046     eval printf '%s\\n' $HOSTCC_E
1047 }
1048
1049 hostcc_o(){
1050     eval printf '%s\\n' $HOSTCC_O
1051 }
1052
1053 check_host_cc(){
1054     log check_host_cc "$@"
1055     cat > $TMPC
1056     log_file $TMPC
1057     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1058 }
1059
1060 check_host_cpp(){
1061     log check_host_cpp "$@"
1062     cat > $TMPC
1063     log_file $TMPC
1064     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1065 }
1066
1067 check_host_cppflags(){
1068     log check_host_cppflags "$@"
1069     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1070 int x;
1071 EOF
1072 }
1073
1074 check_host_cflags(){
1075     log check_host_cflags "$@"
1076     set -- $($host_cflags_filter "$@")
1077     check_host_cc "$@" <<EOF && append host_cflags "$@"
1078 int x;
1079 EOF
1080 }
1081
1082 check_host_cpp_condition(){
1083     log check_host_cpp_condition "$@"
1084     header=$1
1085     condition=$2
1086     shift 2
1087     check_host_cpp "$@" <<EOF
1088 #include <$header>
1089 #if !($condition)
1090 #error "unsatisfied condition: $condition"
1091 #endif
1092 EOF
1093 }
1094
1095 apply(){
1096     file=$1
1097     shift
1098     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1099 }
1100
1101 cp_if_changed(){
1102     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1103     mkdir -p "$(dirname $2)"
1104     $cp_f "$1" "$2"
1105 }
1106
1107 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1108 # system-dependent things.
1109
1110 COMPONENT_LIST="
1111     bsfs
1112     decoders
1113     demuxers
1114     encoders
1115     filters
1116     hwaccels
1117     indevs
1118     muxers
1119     outdevs
1120     parsers
1121     protocols
1122 "
1123
1124 EXAMPLE_LIST="
1125     avcodec_example
1126     filter_audio_example
1127     metadata_example
1128     output_example
1129     transcode_aac_example
1130 "
1131
1132 EXTERNAL_LIBRARY_LIST="
1133     avisynth
1134     bzlib
1135     frei0r
1136     gnutls
1137     libbs2b
1138     libcdio
1139     libdc1394
1140     libfaac
1141     libfdk_aac
1142     libfontconfig
1143     libfreetype
1144     libgsm
1145     libilbc
1146     libmp3lame
1147     libopencore_amrnb
1148     libopencore_amrwb
1149     libopencv
1150     libopenjpeg
1151     libopus
1152     libpulse
1153     librtmp
1154     libschroedinger
1155     libspeex
1156     libtheora
1157     libtwolame
1158     libvo_aacenc
1159     libvo_amrwbenc
1160     libvorbis
1161     libvpx
1162     libwavpack
1163     libwebp
1164     libx264
1165     libx265
1166     libxavs
1167     libxvid
1168     openssl
1169     x11grab
1170     zlib
1171 "
1172
1173 FEATURE_LIST="
1174     gray
1175     hardcoded_tables
1176     runtime_cpudetect
1177     safe_bitstream_reader
1178     shared
1179     small
1180     sram
1181     static
1182     swscale_alpha
1183 "
1184
1185 HWACCEL_LIST="
1186     dxva2
1187     vaapi
1188     vda
1189     vdpau
1190 "
1191
1192 LIBRARY_LIST="
1193     avcodec
1194     avdevice
1195     avfilter
1196     avformat
1197     avresample
1198     avutil
1199     swscale
1200 "
1201
1202 LICENSE_LIST="
1203     gpl
1204     nonfree
1205     version3
1206 "
1207
1208 PROGRAM_LIST="
1209     avconv
1210     avplay
1211     avprobe
1212     avserver
1213 "
1214
1215 SUBSYSTEM_LIST="
1216     dct
1217     doc
1218     error_resilience
1219     fft
1220     lsp
1221     lzo
1222     mdct
1223     network
1224     rdft
1225 "
1226
1227 CONFIG_LIST="
1228     $COMPONENT_LIST
1229     $EXAMPLE_LIST
1230     $EXTERNAL_LIBRARY_LIST
1231     $FEATURE_LIST
1232     $HWACCEL_LIST
1233     $LICENSE_LIST
1234     $LIBRARY_LIST
1235     $PROGRAM_LIST
1236     $SUBSYSTEM_LIST
1237     memalign_hack
1238     neon_clobber_test
1239     pic
1240     pod2man
1241     texi2html
1242     thumb
1243     xmm_clobber_test
1244 "
1245
1246 THREADS_LIST="
1247     pthreads
1248     w32threads
1249 "
1250
1251 ATOMICS_LIST="
1252     atomics_gcc
1253     atomics_suncc
1254     atomics_win32
1255 "
1256
1257 ARCH_LIST="
1258     aarch64
1259     alpha
1260     arm
1261     avr32
1262     avr32_ap
1263     avr32_uc
1264     bfin
1265     ia64
1266     m68k
1267     mips
1268     mips64
1269     parisc
1270     ppc
1271     ppc64
1272     s390
1273     sh4
1274     sparc
1275     sparc64
1276     tilegx
1277     tilepro
1278     tomi
1279     x86
1280     x86_32
1281     x86_64
1282 "
1283
1284 ARCH_EXT_LIST_ARM="
1285     armv5te
1286     armv6
1287     armv6t2
1288     armv8
1289     neon
1290     vfp
1291     vfpv3
1292 "
1293
1294 ARCH_EXT_LIST_X86_SIMD="
1295     amd3dnow
1296     amd3dnowext
1297     avx
1298     avx2
1299     fma3
1300     fma4
1301     mmx
1302     mmxext
1303     sse
1304     sse2
1305     sse3
1306     sse4
1307     sse42
1308     ssse3
1309     xop
1310 "
1311
1312 ARCH_EXT_LIST_PPC="
1313     altivec
1314     dcbzl
1315     ldbrx
1316     ppc4xx
1317 "
1318
1319 ARCH_EXT_LIST_X86="
1320     $ARCH_EXT_LIST_X86_SIMD
1321     cpunop
1322     i686
1323 "
1324
1325 ARCH_EXT_LIST="
1326     $ARCH_EXT_LIST_ARM
1327     $ARCH_EXT_LIST_PPC
1328     $ARCH_EXT_LIST_X86
1329     loongson
1330     vis
1331 "
1332
1333 ARCH_FEATURES="
1334     aligned_stack
1335     fast_64bit
1336     fast_clz
1337     fast_cmov
1338     local_aligned_8
1339     local_aligned_16
1340 "
1341
1342 BUILTIN_LIST="
1343     atomic_cas_ptr
1344     machine_rw_barrier
1345     MemoryBarrier
1346     mm_empty
1347     rdtsc
1348     sync_val_compare_and_swap
1349 "
1350 HAVE_LIST_CMDLINE="
1351     inline_asm
1352     symver
1353     yasm
1354 "
1355
1356 HAVE_LIST_PUB="
1357     bigendian
1358     fast_unaligned
1359 "
1360
1361 HEADERS_LIST="
1362     alsa_asoundlib_h
1363     altivec_h
1364     arpa_inet_h
1365     cdio_paranoia_h
1366     cdio_paranoia_paranoia_h
1367     dev_bktr_ioctl_bt848_h
1368     dev_bktr_ioctl_meteor_h
1369     dev_ic_bt8xx_h
1370     dev_video_bktr_ioctl_bt848_h
1371     dev_video_meteor_ioctl_meteor_h
1372     direct_h
1373     dlfcn_h
1374     dxva_h
1375     gsm_h
1376     io_h
1377     mach_mach_time_h
1378     machine_ioctl_bt848_h
1379     machine_ioctl_meteor_h
1380     malloc_h
1381     poll_h
1382     sndio_h
1383     soundcard_h
1384     sys_mman_h
1385     sys_param_h
1386     sys_resource_h
1387     sys_select_h
1388     sys_soundcard_h
1389     sys_time_h
1390     sys_un_h
1391     sys_videoio_h
1392     unistd_h
1393     windows_h
1394     winsock2_h
1395 "
1396
1397 MATH_FUNCS="
1398     atanf
1399     atan2f
1400     cbrtf
1401     cosf
1402     exp2
1403     exp2f
1404     expf
1405     isinf
1406     isnan
1407     ldexpf
1408     llrint
1409     llrintf
1410     log2
1411     log2f
1412     log10f
1413     lrint
1414     lrintf
1415     powf
1416     rint
1417     round
1418     roundf
1419     sinf
1420     trunc
1421     truncf
1422 "
1423
1424 SYSTEM_FUNCS="
1425     aligned_malloc
1426     closesocket
1427     CommandLineToArgvW
1428     CoTaskMemFree
1429     CryptGenRandom
1430     dlopen
1431     fcntl
1432     flt_lim
1433     fork
1434     getaddrinfo
1435     gethrtime
1436     getopt
1437     GetProcessAffinityMask
1438     GetProcessMemoryInfo
1439     GetProcessTimes
1440     getrusage
1441     getservbyport
1442     GetSystemTimeAsFileTime
1443     gettimeofday
1444     inet_aton
1445     isatty
1446     jack_port_get_latency_range
1447     localtime_r
1448     mach_absolute_time
1449     MapViewOfFile
1450     memalign
1451     mkstemp
1452     mmap
1453     mprotect
1454     nanosleep
1455     posix_memalign
1456     sched_getaffinity
1457     SetConsoleTextAttribute
1458     setmode
1459     setrlimit
1460     Sleep
1461     strerror_r
1462     strptime
1463     sysconf
1464     sysctl
1465     usleep
1466     VirtualAlloc
1467 "
1468
1469 TOOLCHAIN_FEATURES="
1470     asm_mod_q
1471     attribute_may_alias
1472     attribute_packed
1473     ebp_available
1474     ebx_available
1475     gnu_as
1476     ibm_asm
1477     inline_asm_labels
1478     pragma_deprecated
1479     symver_asm_label
1480     symver_gnu_asm
1481     vfp_args
1482     xform_asm
1483     xmm_clobbers
1484 "
1485
1486 TYPES_LIST="
1487     socklen_t
1488     struct_addrinfo
1489     struct_group_source_req
1490     struct_ip_mreq_source
1491     struct_ipv6_mreq
1492     struct_pollfd
1493     struct_rusage_ru_maxrss
1494     struct_sockaddr_in6
1495     struct_sockaddr_sa_len
1496     struct_sockaddr_storage
1497     struct_v4l2_frmivalenum_discrete
1498 "
1499
1500 HAVE_LIST="
1501     $ARCH_EXT_LIST
1502     $(add_suffix _external $ARCH_EXT_LIST)
1503     $(add_suffix _inline   $ARCH_EXT_LIST)
1504     $ARCH_FEATURES
1505     $ATOMICS_LIST
1506     $BUILTIN_LIST
1507     $HAVE_LIST_CMDLINE
1508     $HAVE_LIST_PUB
1509     $HEADERS_LIST
1510     $MATH_FUNCS
1511     $SYSTEM_FUNCS
1512     $THREADS_LIST
1513     $TOOLCHAIN_FEATURES
1514     $TYPES_LIST
1515     atomics_native
1516     dos_paths
1517     dxva2_lib
1518     libc_msvcrt
1519     libdc1394_1
1520     libdc1394_2
1521     sdl
1522     threads
1523     vdpau_x11
1524     xlib
1525 "
1526
1527 # options emitted with CONFIG_ prefix but not available on the command line
1528 CONFIG_EXTRA="
1529     aandcttables
1530     ac3dsp
1531     audio_frame_queue
1532     cabac
1533     dsputil
1534     gcrypt
1535     golomb
1536     gplv3
1537     h263dsp
1538     h264chroma
1539     h264dsp
1540     h264pred
1541     h264qpel
1542     hpeldsp
1543     huffman
1544     intrax8
1545     lgplv3
1546     lpc
1547     mpegaudio
1548     mpegaudiodsp
1549     mpegvideo
1550     mpegvideoenc
1551     nettle
1552     rangecoder
1553     riffdec
1554     riffenc
1555     rtpdec
1556     rtpenc_chain
1557     sinewin
1558     tpeldsp
1559     videodsp
1560     vp3dsp
1561 "
1562
1563 CMDLINE_SELECT="
1564     $ARCH_EXT_LIST
1565     $CONFIG_LIST
1566     $HAVE_LIST_CMDLINE
1567     $THREADS_LIST
1568     asm
1569     cross_compile
1570     debug
1571     extra_warnings
1572     logging
1573     lto
1574     optimizations
1575 "
1576
1577 PATHS_LIST="
1578     bindir
1579     datadir
1580     docdir
1581     incdir
1582     libdir
1583     mandir
1584     prefix
1585     shlibdir
1586 "
1587
1588 CMDLINE_SET="
1589     $PATHS_LIST
1590     ar
1591     arch
1592     as
1593     build_suffix
1594     cc
1595     cpu
1596     cross_prefix
1597     dep_cc
1598     extra_version
1599     host_cc
1600     host_cflags
1601     host_ld
1602     host_ldflags
1603     host_libs
1604     host_os
1605     ld
1606     logfile
1607     malloc_prefix
1608     nm
1609     optflags
1610     pkg_config
1611     pkg_config_flags
1612     random_seed
1613     samples
1614     sysinclude
1615     sysroot
1616     target_exec
1617     target_os
1618     target_path
1619     target_samples
1620     toolchain
1621 "
1622
1623 CMDLINE_APPEND="
1624     extra_cflags
1625     host_cppflags
1626 "
1627
1628 # code dependency declarations
1629
1630 # architecture extensions
1631
1632 armv5te_deps="arm"
1633 armv6_deps="arm"
1634 armv6t2_deps="arm"
1635 armv8_deps="aarch64"
1636 neon_deps_any="aarch64 arm"
1637 vfp_deps_any="aarch64 arm"
1638 vfpv3_deps="vfp"
1639
1640 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1641
1642 altivec_deps="ppc"
1643 ppc4xx_deps="ppc"
1644
1645 cpunop_deps="i686"
1646 x86_64_select="i686"
1647 x86_64_suggest="fast_cmov"
1648
1649 amd3dnow_deps="mmx"
1650 amd3dnowext_deps="amd3dnow"
1651 i686_deps="x86"
1652 mmx_deps="x86"
1653 mmxext_deps="mmx"
1654 sse_deps="mmxext"
1655 sse2_deps="sse"
1656 sse3_deps="sse2"
1657 ssse3_deps="sse3"
1658 sse4_deps="ssse3"
1659 sse42_deps="sse4"
1660 avx_deps="sse42"
1661 xop_deps="avx"
1662 fma3_deps="avx"
1663 fma4_deps="avx"
1664 avx2_deps="avx"
1665
1666 mmx_external_deps="yasm"
1667 mmx_inline_deps="inline_asm"
1668 mmx_suggest="mmx_external mmx_inline"
1669
1670 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1671     eval dep=\$${ext}_deps
1672     eval ${ext}_external_deps='"${dep}_external"'
1673     eval ${ext}_inline_deps='"${dep}_inline"'
1674     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1675 done
1676
1677 aligned_stack_if_any="aarch64 ppc x86"
1678 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1679 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1680 fast_unaligned_if_any="aarch64 ppc x86"
1681
1682 need_memalign="altivec neon sse"
1683
1684 # system capabilities
1685 log2_deps="!libc_msvcrt"
1686
1687 symver_if_any="symver_asm_label symver_gnu_asm"
1688
1689 # threading support
1690 atomics_gcc_if="sync_val_compare_and_swap"
1691 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1692 atomics_win32_if="MemoryBarrier"
1693 atomics_native_if_any="$ATOMICS_LIST"
1694 w32threads_deps="atomics_native"
1695 threads_if_any="$THREADS_LIST"
1696
1697 # subsystems
1698 dct_select="rdft"
1699 error_resilience_select="dsputil"
1700 mdct_select="fft"
1701 rdft_select="fft"
1702 mpegaudio_select="mpegaudiodsp"
1703 mpegaudiodsp_select="dct"
1704 mpegvideo_select="dsputil hpeldsp videodsp"
1705 mpegvideoenc_select="dsputil mpegvideo"
1706
1707 # decoders / encoders
1708 aac_decoder_select="mdct sinewin"
1709 aac_encoder_select="audio_frame_queue mdct sinewin"
1710 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1711 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1712 ac3_encoder_select="mdct ac3dsp dsputil"
1713 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1714 aic_decoder_select="dsputil golomb"
1715 alac_encoder_select="lpc"
1716 als_decoder_select="dsputil"
1717 amrnb_decoder_select="lsp"
1718 amrwb_decoder_select="lsp"
1719 amv_decoder_select="sp5x_decoder"
1720 ape_decoder_select="dsputil"
1721 asv1_decoder_select="dsputil"
1722 asv1_encoder_select="dsputil"
1723 asv2_decoder_select="dsputil"
1724 asv2_encoder_select="dsputil"
1725 atrac1_decoder_select="mdct sinewin"
1726 atrac3_decoder_select="mdct"
1727 atrac3p_decoder_select="mdct sinewin"
1728 bink_decoder_select="dsputil hpeldsp"
1729 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1730 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1731 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1732 cllc_decoder_select="dsputil"
1733 comfortnoise_encoder_select="lpc"
1734 cook_decoder_select="dsputil mdct sinewin"
1735 cscd_decoder_select="lzo"
1736 cscd_decoder_suggest="zlib"
1737 dca_decoder_select="mdct"
1738 dnxhd_decoder_select="dsputil"
1739 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1740 dvvideo_decoder_select="dsputil"
1741 dvvideo_encoder_select="dsputil"
1742 dxa_decoder_deps="zlib"
1743 eac3_decoder_select="ac3_decoder"
1744 eac3_encoder_select="ac3_encoder"
1745 eamad_decoder_select="aandcttables dsputil mpegvideo"
1746 eatgq_decoder_select="aandcttables dsputil"
1747 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
1748 exr_decoder_deps="zlib"
1749 ffv1_decoder_select="golomb rangecoder"
1750 ffv1_encoder_select="rangecoder"
1751 ffvhuff_decoder_select="huffyuv_decoder"
1752 ffvhuff_encoder_select="huffyuv_encoder"
1753 fic_decoder_select="golomb"
1754 flac_decoder_select="golomb"
1755 flac_encoder_select="dsputil golomb lpc"
1756 flashsv_decoder_deps="zlib"
1757 flashsv_encoder_deps="zlib"
1758 flashsv2_decoder_deps="zlib"
1759 flv_decoder_select="h263_decoder"
1760 flv_encoder_select="h263_encoder"
1761 fourxm_decoder_select="dsputil"
1762 fraps_decoder_select="dsputil huffman"
1763 g2m_decoder_deps="zlib"
1764 g2m_decoder_select="dsputil"
1765 h261_decoder_select="error_resilience mpegvideo"
1766 h261_encoder_select="aandcttables mpegvideoenc"
1767 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1768 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1769 h263i_decoder_select="h263_decoder"
1770 h263p_encoder_select="h263_encoder"
1771 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1772 h264_decoder_suggest="error_resilience"
1773 hevc_decoder_select="cabac dsputil golomb videodsp"
1774 huffyuv_decoder_select="dsputil"
1775 huffyuv_encoder_select="dsputil huffman"
1776 iac_decoder_select="imc_decoder"
1777 imc_decoder_select="dsputil fft mdct sinewin"
1778 indeo3_decoder_select="hpeldsp"
1779 interplay_video_decoder_select="hpeldsp"
1780 jpegls_decoder_select="golomb mjpeg_decoder"
1781 jpegls_encoder_select="golomb"
1782 jv_decoder_select="dsputil"
1783 lagarith_decoder_select="dsputil"
1784 ljpeg_encoder_select="aandcttables mpegvideoenc"
1785 loco_decoder_select="golomb"
1786 mdec_decoder_select="dsputil error_resilience mpegvideo"
1787 metasound_decoder_select="lsp mdct sinewin"
1788 mimic_decoder_select="dsputil hpeldsp"
1789 mjpeg_decoder_select="dsputil hpeldsp"
1790 mjpeg_encoder_select="aandcttables mpegvideoenc"
1791 mjpegb_decoder_select="mjpeg_decoder"
1792 mlp_decoder_select="mlp_parser"
1793 motionpixels_decoder_select="dsputil"
1794 mp1_decoder_select="mpegaudio"
1795 mp1float_decoder_select="mpegaudio"
1796 mp2_decoder_select="mpegaudio"
1797 mp2float_decoder_select="mpegaudio"
1798 mp3_decoder_select="mpegaudio"
1799 mp3adu_decoder_select="mpegaudio"
1800 mp3adufloat_decoder_select="mpegaudio"
1801 mp3float_decoder_select="mpegaudio"
1802 mp3on4_decoder_select="mpegaudio"
1803 mp3on4float_decoder_select="mpegaudio"
1804 mpc7_decoder_select="dsputil mpegaudiodsp"
1805 mpc8_decoder_select="mpegaudiodsp"
1806 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1807 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1808 mpeg1video_decoder_select="error_resilience mpegvideo"
1809 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1810 mpeg2video_decoder_select="error_resilience mpegvideo"
1811 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1812 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1813 mpeg4_encoder_select="h263_encoder"
1814 msmpeg4v1_decoder_select="h263_decoder"
1815 msmpeg4v2_decoder_select="h263_decoder"
1816 msmpeg4v2_encoder_select="h263_encoder"
1817 msmpeg4v3_decoder_select="h263_decoder"
1818 msmpeg4v3_encoder_select="h263_encoder"
1819 mss2_decoder_select="error_resilience vc1_decoder"
1820 mxpeg_decoder_select="mjpeg_decoder"
1821 nellymoser_decoder_select="mdct sinewin"
1822 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1823 nuv_decoder_select="dsputil lzo"
1824 on2avc_decoder_select="mdct"
1825 png_decoder_deps="zlib"
1826 png_encoder_deps="zlib"
1827 png_encoder_select="dsputil"
1828 prores_decoder_select="dsputil"
1829 prores_encoder_select="dsputil"
1830 qcelp_decoder_select="lsp"
1831 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1832 ra_144_encoder_select="audio_frame_queue lpc"
1833 ralf_decoder_select="golomb"
1834 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1835 rv10_encoder_select="h263_encoder"
1836 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1837 rv20_encoder_select="h263_encoder"
1838 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1839 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1840 shorten_decoder_select="golomb"
1841 sipr_decoder_select="lsp"
1842 sp5x_decoder_select="mjpeg_decoder"
1843 svq1_decoder_select="hpeldsp"
1844 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1845 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1846 svq3_decoder_suggest="zlib"
1847 tak_decoder_select="dsputil"
1848 theora_decoder_select="vp3_decoder"
1849 thp_decoder_select="mjpeg_decoder"
1850 tiff_decoder_suggest="zlib"
1851 tiff_encoder_suggest="zlib"
1852 truehd_decoder_select="mlp_decoder"
1853 truemotion2_decoder_select="dsputil"
1854 truespeech_decoder_select="dsputil"
1855 tscc_decoder_deps="zlib"
1856 twinvq_decoder_select="mdct lsp sinewin"
1857 utvideo_decoder_select="dsputil"
1858 utvideo_encoder_select="dsputil huffman"
1859 vble_decoder_select="dsputil"
1860 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1861 vc1image_decoder_select="vc1_decoder"
1862 vorbis_decoder_select="mdct"
1863 vorbis_encoder_select="mdct"
1864 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1865 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1866 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1867 vp6a_decoder_select="vp6_decoder"
1868 vp6f_decoder_select="vp6_decoder"
1869 vp7_decoder_select="h264pred videodsp"
1870 vp8_decoder_select="h264pred videodsp"
1871 vp9_decoder_select="videodsp"
1872 webp_decoder_select="vp8_decoder"
1873 wmapro_decoder_select="mdct sinewin"
1874 wmav1_decoder_select="mdct sinewin"
1875 wmav1_encoder_select="mdct sinewin"
1876 wmav2_decoder_select="mdct sinewin"
1877 wmav2_encoder_select="mdct sinewin"
1878 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1879 wmv1_decoder_select="h263_decoder"
1880 wmv1_encoder_select="h263_encoder"
1881 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1882 wmv2_encoder_select="h263_encoder"
1883 wmv3_decoder_select="vc1_decoder"
1884 wmv3image_decoder_select="wmv3_decoder"
1885 zerocodec_decoder_deps="zlib"
1886 zlib_decoder_deps="zlib"
1887 zlib_encoder_deps="zlib"
1888 zmbv_decoder_deps="zlib"
1889 zmbv_encoder_deps="zlib"
1890
1891 # hardware accelerators
1892 dxva2_deps="dxva2api_h"
1893 vaapi_deps="va_va_h"
1894 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1895 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1896 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1897
1898 h263_vaapi_hwaccel_deps="vaapi"
1899 h263_vaapi_hwaccel_select="h263_decoder"
1900 h263_vdpau_hwaccel_deps="vdpau"
1901 h263_vdpau_hwaccel_select="h263_decoder"
1902 h264_dxva2_hwaccel_deps="dxva2"
1903 h264_dxva2_hwaccel_select="h264_decoder"
1904 h264_vaapi_hwaccel_deps="vaapi"
1905 h264_vaapi_hwaccel_select="h264_decoder"
1906 h264_vda_hwaccel_deps="vda"
1907 h264_vda_hwaccel_select="h264_decoder"
1908 h264_vda_old_hwaccel_deps="vda"
1909 h264_vda_old_hwaccel_select="h264_decoder"
1910 h264_vdpau_hwaccel_deps="vdpau"
1911 h264_vdpau_hwaccel_select="h264_decoder"
1912 mpeg1_vdpau_hwaccel_deps="vdpau"
1913 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1914 mpeg2_dxva2_hwaccel_deps="dxva2"
1915 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1916 mpeg2_vaapi_hwaccel_deps="vaapi"
1917 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1918 mpeg2_vdpau_hwaccel_deps="vdpau"
1919 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1920 mpeg4_vaapi_hwaccel_deps="vaapi"
1921 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1922 mpeg4_vdpau_hwaccel_deps="vdpau"
1923 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1924 vc1_dxva2_hwaccel_deps="dxva2"
1925 vc1_dxva2_hwaccel_select="vc1_decoder"
1926 vc1_vaapi_hwaccel_deps="vaapi"
1927 vc1_vaapi_hwaccel_select="vc1_decoder"
1928 vc1_vdpau_hwaccel_deps="vdpau"
1929 vc1_vdpau_hwaccel_select="vc1_decoder"
1930 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1931 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1932 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1933
1934 # parsers
1935 h264_parser_select="h264_decoder"
1936 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
1937 mpegvideo_parser_select="error_resilience mpegvideo"
1938 vc1_parser_select="mpegvideo"
1939
1940 # external libraries
1941 libfaac_encoder_deps="libfaac"
1942 libfaac_encoder_select="audio_frame_queue"
1943 libfdk_aac_decoder_deps="libfdk_aac"
1944 libfdk_aac_encoder_deps="libfdk_aac"
1945 libfdk_aac_encoder_select="audio_frame_queue"
1946 libgsm_decoder_deps="libgsm"
1947 libgsm_encoder_deps="libgsm"
1948 libgsm_ms_decoder_deps="libgsm"
1949 libgsm_ms_encoder_deps="libgsm"
1950 libilbc_decoder_deps="libilbc"
1951 libilbc_encoder_deps="libilbc"
1952 libmp3lame_encoder_deps="libmp3lame"
1953 libmp3lame_encoder_select="audio_frame_queue"
1954 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1955 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1956 libopencore_amrnb_encoder_select="audio_frame_queue"
1957 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1958 libopenjpeg_decoder_deps="libopenjpeg"
1959 libopenjpeg_encoder_deps="libopenjpeg"
1960 libopus_decoder_deps="libopus"
1961 libopus_encoder_deps="libopus"
1962 libopus_encoder_select="audio_frame_queue"
1963 libschroedinger_decoder_deps="libschroedinger"
1964 libschroedinger_encoder_deps="libschroedinger"
1965 libspeex_decoder_deps="libspeex"
1966 libspeex_encoder_deps="libspeex"
1967 libspeex_encoder_select="audio_frame_queue"
1968 libtheora_encoder_deps="libtheora"
1969 libtwolame_encoder_deps="libtwolame"
1970 libvo_aacenc_encoder_deps="libvo_aacenc"
1971 libvo_aacenc_encoder_select="audio_frame_queue"
1972 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1973 libvorbis_encoder_deps="libvorbis"
1974 libvorbis_encoder_select="audio_frame_queue"
1975 libvpx_vp8_decoder_deps="libvpx"
1976 libvpx_vp8_encoder_deps="libvpx"
1977 libvpx_vp9_decoder_deps="libvpx"
1978 libvpx_vp9_encoder_deps="libvpx"
1979 libwavpack_encoder_deps="libwavpack"
1980 libwebp_encoder_deps="libwebp"
1981 libx264_encoder_deps="libx264"
1982 libx265_encoder_deps="libx265"
1983 libxavs_encoder_deps="libxavs"
1984 libxvid_encoder_deps="libxvid"
1985
1986 # demuxers / muxers
1987 ac3_demuxer_select="ac3_parser"
1988 asf_demuxer_select="riffdec"
1989 asf_muxer_select="riffenc"
1990 asf_stream_muxer_select="asf_muxer"
1991 avi_demuxer_select="riffdec"
1992 avi_muxer_select="riffenc"
1993 avisynth_demuxer_deps="avisynth"
1994 avisynth_demuxer_select="riffdec"
1995 caf_demuxer_select="riffdec"
1996 dirac_demuxer_select="dirac_parser"
1997 dxa_demuxer_select="riffdec"
1998 eac3_demuxer_select="ac3_parser"
1999 f4v_muxer_select="mov_muxer"
2000 flac_demuxer_select="flac_parser"
2001 hds_muxer_select="flv_muxer"
2002 hls_muxer_select="mpegts_muxer"
2003 ipod_muxer_select="mov_muxer"
2004 ismv_muxer_select="mov_muxer"
2005 matroska_audio_muxer_select="matroska_muxer"
2006 matroska_demuxer_select="riffdec"
2007 matroska_demuxer_suggest="bzlib lzo zlib"
2008 matroska_muxer_select="riffenc"
2009 mmf_muxer_select="riffenc"
2010 mov_demuxer_select="riffdec"
2011 mov_demuxer_suggest="zlib"
2012 mov_muxer_select="riffenc rtpenc_chain"
2013 mp3_demuxer_select="mpegaudio_parser"
2014 mp4_muxer_select="mov_muxer"
2015 mpegts_muxer_select="adts_muxer latm_muxer"
2016 mpegtsraw_demuxer_select="mpegts_demuxer"
2017 mxf_d10_muxer_select="mxf_muxer"
2018 nut_muxer_select="riffenc"
2019 nuv_demuxer_select="riffdec"
2020 ogg_demuxer_select="golomb"
2021 psp_muxer_select="mov_muxer"
2022 rtp_demuxer_select="sdp_demuxer"
2023 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2024 rtsp_demuxer_select="http_protocol rtpdec"
2025 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2026 sap_demuxer_select="sdp_demuxer"
2027 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2028 sdp_demuxer_select="rtpdec"
2029 smoothstreaming_muxer_select="ismv_muxer"
2030 spdif_muxer_select="aac_parser"
2031 tak_demuxer_select="tak_parser"
2032 tg2_muxer_select="mov_muxer"
2033 tgp_muxer_select="mov_muxer"
2034 w64_demuxer_select="wav_demuxer"
2035 wav_demuxer_select="riffdec"
2036 wav_muxer_select="riffenc"
2037 webm_muxer_select="riffenc"
2038 wtv_demuxer_select="riffdec"
2039 xmv_demuxer_select="riffdec"
2040 xwma_demuxer_select="riffdec"
2041
2042 # indevs / outdevs
2043 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2044 alsa_outdev_deps="alsa_asoundlib_h"
2045 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2046 dv1394_indev_deps="dv1394"
2047 dv1394_indev_select="dv_demuxer"
2048 fbdev_indev_deps="linux_fb_h"
2049 jack_indev_deps="jack_jack_h pthreads"
2050 libcdio_indev_deps="libcdio"
2051 libdc1394_indev_deps="libdc1394"
2052 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2053 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2054 pulse_indev_deps="libpulse"
2055 sndio_indev_deps="sndio_h"
2056 sndio_outdev_deps="sndio_h"
2057 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2058 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2059 vfwcap_indev_extralibs="-lavicap32"
2060 x11grab_indev_deps="x11grab XShmCreateImage"
2061
2062 # protocols
2063 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2064 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2065 ffrtmpcrypt_protocol_select="tcp_protocol"
2066 ffrtmphttp_protocol_deps="!librtmp_protocol"
2067 ffrtmphttp_protocol_select="http_protocol"
2068 gopher_protocol_select="network"
2069 http_protocol_select="tcp_protocol"
2070 httpproxy_protocol_select="tcp_protocol"
2071 https_protocol_select="tls_protocol"
2072 librtmp_protocol_deps="librtmp"
2073 librtmpe_protocol_deps="librtmp"
2074 librtmps_protocol_deps="librtmp"
2075 librtmpt_protocol_deps="librtmp"
2076 librtmpte_protocol_deps="librtmp"
2077 mmsh_protocol_select="http_protocol"
2078 mmst_protocol_select="network"
2079 rtmp_protocol_deps="!librtmp_protocol"
2080 rtmp_protocol_select="tcp_protocol"
2081 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2082 rtmps_protocol_deps="!librtmp_protocol"
2083 rtmps_protocol_select="tls_protocol"
2084 rtmpt_protocol_select="ffrtmphttp_protocol"
2085 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2086 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2087 rtp_protocol_select="udp_protocol"
2088 sctp_protocol_deps="struct_sctp_event_subscribe"
2089 sctp_protocol_select="network"
2090 srtp_protocol_select="rtp_protocol"
2091 tcp_protocol_select="network"
2092 tls_protocol_deps_any="openssl gnutls"
2093 tls_protocol_select="tcp_protocol"
2094 udp_protocol_select="network"
2095 unix_protocol_deps="sys_un_h"
2096 unix_protocol_select="network"
2097
2098 # filters
2099 blackframe_filter_deps="gpl"
2100 boxblur_filter_deps="gpl"
2101 bs2b_filter_deps="libbs2b"
2102 cropdetect_filter_deps="gpl"
2103 delogo_filter_deps="gpl"
2104 drawtext_filter_deps="libfreetype"
2105 frei0r_filter_deps="frei0r dlopen"
2106 frei0r_filter_extralibs='$ldl'
2107 frei0r_src_filter_deps="frei0r dlopen"
2108 frei0r_src_filter_extralibs='$ldl'
2109 hqdn3d_filter_deps="gpl"
2110 interlace_filter_deps="gpl"
2111 ocv_filter_deps="libopencv"
2112 resample_filter_deps="avresample"
2113 scale_filter_deps="swscale"
2114
2115 # examples
2116 avcodec_example_deps="avcodec avutil"
2117 filter_audio_example_deps="avfilter avutil"
2118 metadata_example_deps="avformat avutil"
2119 output_example_deps="avcodec avformat avutil swscale"
2120 transcode_aac_example_deps="avcodec avformat avresample"
2121
2122 # libraries, in linking order
2123 avcodec_deps="avutil"
2124 avdevice_deps="avformat avcodec avutil"
2125 avfilter_deps="avutil"
2126 avformat_deps="avcodec avutil"
2127 avresample_deps="avutil"
2128 swscale_deps="avutil"
2129
2130 # programs
2131 avconv_deps="avcodec avfilter avformat avresample swscale"
2132 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2133                fps_filter null_filter resample_filter scale_filter
2134                setpts_filter trim_filter"
2135 avplay_deps="avcodec avformat avresample swscale sdl"
2136 avplay_libs='$sdl_libs'
2137 avplay_select="rdft"
2138 avprobe_deps="avcodec avformat"
2139 avserver_deps="avformat fork !shared"
2140 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2141
2142 # documentation
2143 pod2man_deps="doc"
2144 texi2html_deps="doc"
2145
2146 # default parameters
2147
2148 logfile="config.log"
2149
2150 # installation paths
2151 prefix_default="/usr/local"
2152 bindir_default='${prefix}/bin'
2153 datadir_default='${prefix}/share/avconv'
2154 docdir_default='${prefix}/share/doc/libav'
2155 incdir_default='${prefix}/include'
2156 libdir_default='${prefix}/lib'
2157 mandir_default='${prefix}/share/man'
2158 shlibdir_default="$libdir_default"
2159
2160 # toolchain
2161 ar_default="ar"
2162 cc_default="gcc"
2163 host_cc_default="gcc"
2164 cp_f="cp -f"
2165 ln_s="ln -s -f"
2166 nm_default="nm -g"
2167 objformat="elf"
2168 pkg_config_default=pkg-config
2169 ranlib="ranlib"
2170 strip="strip"
2171 yasmexe="yasm"
2172
2173 nogas=":"
2174
2175 # machine
2176 arch_default=$(uname -m)
2177 cpu="generic"
2178
2179 # OS
2180 target_os_default=$(tolower $(uname -s))
2181 host_os=$target_os_default
2182
2183 # configurable options
2184 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2185
2186 enable asm
2187 enable debug
2188 enable doc
2189 enable optimizations
2190 enable safe_bitstream_reader
2191 enable static
2192 enable swscale_alpha
2193
2194 # By default, enable only those hwaccels that have no external dependencies.
2195 enable dxva2 vdpau
2196
2197 # build settings
2198 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2199 LIBPREF="lib"
2200 LIBSUF=".a"
2201 FULLNAME='$(NAME)$(BUILDSUF)'
2202 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2203 SLIBPREF="lib"
2204 SLIBSUF=".so"
2205 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2206 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2207 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2208 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2209 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2210 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2211
2212 asflags_filter=echo
2213 cflags_filter=echo
2214 ldflags_filter=echo
2215
2216 AS_C='-c'
2217 AS_O='-o $@'
2218 CC_C='-c'
2219 CC_E='-E -o $@'
2220 CC_O='-o $@'
2221 LD_O='-o $@'
2222 LD_LIB='-l%'
2223 LD_PATH='-L'
2224 HOSTCC_C='-c'
2225 HOSTCC_E='-E -o $@'
2226 HOSTCC_O='-o $@'
2227 HOSTLD_O='-o $@'
2228
2229 host_libs='-lm'
2230 host_cflags_filter=echo
2231 host_ldflags_filter=echo
2232
2233 target_path='$(CURDIR)'
2234
2235 # since the object filename is not given with the -MM flag, the compiler
2236 # is only able to print the basename, and we must add the path ourselves
2237 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2238 DEPFLAGS='-MM'
2239
2240 # find source path
2241 if test -f configure; then
2242     source_path=.
2243 else
2244     source_path=$(cd $(dirname "$0"); pwd)
2245     echo "$source_path" | grep -q '[[:blank:]]' &&
2246         die "Out of tree builds are impossible with whitespace in source path."
2247     test -e "$source_path/config.h" &&
2248         die "Out of tree builds are impossible with config.h in source dir."
2249 fi
2250
2251 for v in "$@"; do
2252     r=${v#*=}
2253     l=${v%"$r"}
2254     r=$(sh_quote "$r")
2255     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2256 done
2257
2258 find_things(){
2259     thing=$1
2260     pattern=$2
2261     file=$source_path/$3
2262     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2263 }
2264
2265 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2266 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2267 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2268 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2269 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2270 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2271 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2272 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2273 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2274 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2275 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2276
2277 ALL_COMPONENTS="
2278     $BSF_LIST
2279     $DECODER_LIST
2280     $DEMUXER_LIST
2281     $ENCODER_LIST
2282     $FILTER_LIST
2283     $HWACCEL_LIST
2284     $INDEV_LIST
2285     $MUXER_LIST
2286     $OUTDEV_LIST
2287     $PARSER_LIST
2288     $PROTOCOL_LIST
2289 "
2290
2291 for n in $COMPONENT_LIST; do
2292     v=$(toupper ${n%s})_LIST
2293     eval enable \$$v
2294     eval ${n}_if_any="\$$v"
2295 done
2296
2297 enable $ARCH_EXT_LIST
2298
2299 die_unknown(){
2300     echo "Unknown option \"$1\"."
2301     echo "See $0 --help for available options."
2302     exit 1
2303 }
2304
2305 print_3_columns() {
2306     cat | tr ' ' '\n' | sort | pr -r -3 -t
2307 }
2308
2309 show_list() {
2310     suffix=_$1
2311     shift
2312     echo $* | sed s/$suffix//g | print_3_columns
2313     exit 0
2314 }
2315
2316 rand_list(){
2317     IFS=', '
2318     set -- $*
2319     unset IFS
2320     for thing; do
2321         comp=${thing%:*}
2322         prob=${thing#$comp}
2323         prob=${prob#:}
2324         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2325         echo "prob ${prob:-0.5}"
2326         printf '%s\n' $comp
2327     done
2328 }
2329
2330 do_random(){
2331     action=$1
2332     shift
2333     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2334     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2335 }
2336
2337 for opt do
2338     optval="${opt#*=}"
2339     case "$opt" in
2340         --extra-ldflags=*)
2341             add_ldflags $optval
2342         ;;
2343         --extra-libs=*)
2344             add_extralibs $optval
2345         ;;
2346         --disable-devices)
2347             disable $INDEV_LIST $OUTDEV_LIST
2348         ;;
2349         --enable-debug=*)
2350             debuglevel="$optval"
2351         ;;
2352         --disable-programs)
2353             disable $PROGRAM_LIST
2354         ;;
2355         --disable-everything)
2356             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2357         ;;
2358         --disable-all)
2359             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2360             disable $LIBRARY_LIST $PROGRAM_LIST doc
2361         ;;
2362         --enable-random|--disable-random)
2363             action=${opt%%-random}
2364             do_random ${action#--} $COMPONENT_LIST
2365         ;;
2366         --enable-random=*|--disable-random=*)
2367             action=${opt%%-random=*}
2368             do_random ${action#--} $optval
2369         ;;
2370         --enable-*=*|--disable-*=*)
2371             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2372             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2373             eval list=\$$(toupper $thing)_LIST
2374             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2375             $action $(filter "$name" $list)
2376         ;;
2377         --enable-?*|--disable-?*)
2378             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2379             if is_in $option $COMPONENT_LIST; then
2380                 test $action = disable && action=unset
2381                 eval $action \$$(toupper ${option%s})_LIST
2382             elif is_in $option $CMDLINE_SELECT; then
2383                 $action $option
2384             else
2385                 die_unknown $opt
2386             fi
2387         ;;
2388         --list-*)
2389             NAME="${opt#--list-}"
2390             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2391             NAME=${NAME%s}
2392             eval show_list $NAME \$$(toupper $NAME)_LIST
2393         ;;
2394         --help|-h) show_help
2395         ;;
2396         *)
2397             optname="${opt%%=*}"
2398             optname="${optname#--}"
2399             optname=$(echo "$optname" | sed 's/-/_/g')
2400             if is_in $optname $CMDLINE_SET; then
2401                 eval $optname='$optval'
2402             elif is_in $optname $CMDLINE_APPEND; then
2403                 append $optname "$optval"
2404             else
2405                 die_unknown $opt
2406             fi
2407         ;;
2408     esac
2409 done
2410
2411 disabled logging && logfile=/dev/null
2412
2413 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2414 set >> $logfile
2415
2416 test -n "$cross_prefix" && enable cross_compile
2417
2418 if enabled cross_compile; then
2419     test -n "$arch" && test -n "$target_os" ||
2420         die "Must specify target arch and OS when cross-compiling"
2421 fi
2422
2423 ar_default="${cross_prefix}${ar_default}"
2424 cc_default="${cross_prefix}${cc_default}"
2425 nm_default="${cross_prefix}${nm_default}"
2426 pkg_config_default="${cross_prefix}${pkg_config_default}"
2427 ranlib="${cross_prefix}${ranlib}"
2428 strip="${cross_prefix}${strip}"
2429
2430 sysinclude_default="${sysroot}/usr/include"
2431
2432 case "$toolchain" in
2433     clang-asan)
2434         cc_default="clang"
2435         add_cflags  -fsanitize=address
2436         add_ldflags -fsanitize=address
2437     ;;
2438     clang-tsan)
2439         cc_default="clang"
2440         add_cflags  -fsanitize=thread -pie
2441         add_ldflags -fsanitize=thread -pie
2442     ;;
2443     clang-usan)
2444         cc_default="clang"
2445         add_cflags  -fsanitize=undefined
2446         add_ldflags -fsanitize=undefined
2447     ;;
2448     gcc-asan)
2449         cc_default="gcc"
2450         add_cflags  -fsanitize=address
2451         add_ldflags -fsanitize=address
2452     ;;
2453     gcc-tsan)
2454         cc_default="gcc"
2455         add_cflags  -fsanitize=thread -pie -fPIC
2456         add_ldflags -fsanitize=thread -pie -fPIC
2457     ;;
2458     gcc-usan)
2459         cc_default="gcc"
2460         add_cflags  -fsanitize=undefined
2461         add_ldflags -fsanitize=undefined
2462     ;;
2463     valgrind-massif)
2464         target_exec_default="valgrind"
2465         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2466     ;;
2467     valgrind-memcheck)
2468         target_exec_default="valgrind"
2469         target_exec_args="--track-origins=yes --leak-check=full"
2470     ;;
2471     msvc)
2472         # Check whether the current MSVC version needs the C99 converter.
2473         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2474         # support enough of C99 to build libav. Default to the new
2475         # behaviour if the regexp was unable to match anything, since this
2476         # successfully parses the version number of existing supported
2477         # versions that require the converter (MSVC 2010 and 2012).
2478         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2479         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2480             cc_default="cl"
2481         else
2482             cc_default="c99wrap cl"
2483         fi
2484         ld_default="link"
2485         nm_default="dumpbin -symbols"
2486         ar_default="lib"
2487         target_os_default="win32"
2488         # Use a relative path for TMPDIR. This makes sure all the
2489         # ffconf temp files are written with a relative path, avoiding
2490         # issues with msys/win32 path conversion for MSVC parameters
2491         # such as -Fo<file> or -out:<file>.
2492         TMPDIR=.
2493     ;;
2494     icl)
2495         cc_default="icl"
2496         ld_default="xilink"
2497         nm_default="dumpbin -symbols"
2498         ar_default="xilib"
2499         target_os_default="win32"
2500         TMPDIR=.
2501     ;;
2502     gcov)
2503         add_cflags  -fprofile-arcs -ftest-coverage
2504         add_ldflags -fprofile-arcs -ftest-coverage
2505     ;;
2506     hardened)
2507         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2508         add_ldflags -Wl,-z,relro -Wl,-z,now
2509     ;;
2510     ?*)
2511         die "Unknown toolchain $toolchain"
2512     ;;
2513 esac
2514
2515 set_default arch cc pkg_config sysinclude target_exec target_os
2516 enabled cross_compile || host_cc_default=$cc
2517 set_default host_cc
2518
2519 if ! $pkg_config --version >/dev/null 2>&1; then
2520     warn "$pkg_config not found, library detection may fail."
2521     pkg_config=false
2522 fi
2523
2524 exesuf() {
2525     case $1 in
2526         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2527     esac
2528 }
2529
2530 EXESUF=$(exesuf $target_os)
2531 HOSTEXESUF=$(exesuf $host_os)
2532
2533 # set temporary file name
2534 : ${TMPDIR:=$TEMPDIR}
2535 : ${TMPDIR:=$TMP}
2536 : ${TMPDIR:=/tmp}
2537
2538 if ! check_cmd mktemp -u XXXXXX; then
2539     # simple replacement for missing mktemp
2540     # NOT SAFE FOR GENERAL USE
2541     mktemp(){
2542         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2543     }
2544 fi
2545
2546 tmpfile(){
2547     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2548         (set -C; exec > $tmp) 2>/dev/null ||
2549         die "Unable to create temporary file in $TMPDIR."
2550     append TMPFILES $tmp
2551     eval $1=$tmp
2552 }
2553
2554 trap 'rm -f -- $TMPFILES' EXIT
2555
2556 tmpfile TMPASM .asm
2557 tmpfile TMPC   .c
2558 tmpfile TMPE   $EXESUF
2559 tmpfile TMPH   .h
2560 tmpfile TMPO   .o
2561 tmpfile TMPS   .S
2562 tmpfile TMPSH  .sh
2563 tmpfile TMPV   .ver
2564
2565 unset -f mktemp
2566
2567 chmod +x $TMPE
2568
2569 # make sure we can execute files in $TMPDIR
2570 cat > $TMPSH 2>> $logfile <<EOF
2571 #! /bin/sh
2572 EOF
2573 chmod +x $TMPSH >> $logfile 2>&1
2574 if ! $TMPSH >> $logfile 2>&1; then
2575     cat <<EOF
2576 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2577 variable to another directory and make sure that it is not mounted noexec.
2578 EOF
2579     die "Sanity test failed."
2580 fi
2581
2582 ccc_flags(){
2583     for flag; do
2584         case $flag in
2585             -std=c99)           echo -c99                       ;;
2586             -mcpu=*)            echo -arch ${flag#*=}           ;;
2587             -mieee)             echo -ieee                      ;;
2588             -O*|-fast)          echo $flag                      ;;
2589             -fno-math-errno)    echo -assume nomath_errno       ;;
2590             -g)                 echo -g3                        ;;
2591             -Wall)              echo -msg_enable level2         ;;
2592             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2593             -Wl,*)              echo $flag                      ;;
2594             -f*|-W*)                                            ;;
2595             *)                  echo $flag                      ;;
2596         esac
2597    done
2598 }
2599
2600 cparser_flags(){
2601     for flag; do
2602         case $flag in
2603             -Wno-switch)             echo -Wno-switch-enum ;;
2604             -Wno-format-zero-length) ;;
2605             -Wdisabled-optimization) ;;
2606             -Wno-pointer-sign)       echo -Wno-other ;;
2607             *)                       echo $flag ;;
2608         esac
2609     done
2610 }
2611
2612 msvc_common_flags(){
2613     for flag; do
2614         case $flag in
2615             # In addition to specifying certain flags under the compiler
2616             # specific filters, they must be specified here as well or else the
2617             # generic catch all at the bottom will print the original flag.
2618             -Wall)                ;;
2619             -std=c99)             ;;
2620             # Common flags
2621             -fomit-frame-pointer) ;;
2622             -g)                   echo -Z7 ;;
2623             -fno-math-errno)      ;;
2624             -fno-common)          ;;
2625             -fno-signed-zeros)    ;;
2626             -fPIC)                ;;
2627             -mthumb)              ;;
2628             -march=*)             ;;
2629             -lz)                  echo zlib.lib ;;
2630             -lavifil32)           echo vfw32.lib ;;
2631             -lavicap32)           echo vfw32.lib user32.lib ;;
2632             -l*)                  echo ${flag#-l}.lib ;;
2633             *)                    echo $flag ;;
2634         esac
2635     done
2636 }
2637
2638 msvc_flags(){
2639     msvc_common_flags "$@"
2640     for flag; do
2641         case $flag in
2642             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2643                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2644                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2645                                        -wd4273 ;;
2646         esac
2647     done
2648 }
2649
2650 icl_flags(){
2651     msvc_common_flags "$@"
2652     for flag; do
2653         case $flag in
2654             # Despite what Intel's documentation says -Wall, which is supported
2655             # on Windows, does enable remarks so disable them here.
2656             -Wall)                echo $flag -Qdiag-disable:remark ;;
2657             -std=c99)             echo -Qstd=c99 ;;
2658         esac
2659     done
2660 }
2661
2662 pgi_flags(){
2663     for flag; do
2664         case $flag in
2665             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2666             -fomit-frame-pointer) echo -Mnoframe ;;
2667             -g)                   echo -gopt ;;
2668             *)                    echo $flag ;;
2669         esac
2670     done
2671 }
2672
2673 suncc_flags(){
2674     for flag; do
2675         case $flag in
2676             -march=*|-mcpu=*)
2677                 case "${flag#*=}" in
2678                     native)                   echo -xtarget=native       ;;
2679                     v9|niagara)               echo -xarch=sparc          ;;
2680                     ultrasparc)               echo -xarch=sparcvis       ;;
2681                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2682                     i586|pentium)             echo -xchip=pentium        ;;
2683                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2684                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2685                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2686                     pentium4*)          echo -xtarget=pentium4           ;;
2687                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2688                     *-sse3)             echo -xarch=sse3                 ;;
2689                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2690                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2691                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2692                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2693                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2694                     k8|opteron|athlon64|athlon-fx)
2695                                                echo -xarch=sse2a         ;;
2696                     athlon*)                   echo -xarch=pentium_proa  ;;
2697                 esac
2698                 ;;
2699             -std=c99)             echo -xc99              ;;
2700             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2701             -fPIC)                echo -KPIC -xcode=pic32 ;;
2702             -W*,*)                echo $flag              ;;
2703             -f*-*|-W*|-mimpure-text)                      ;;
2704             -shared)              echo -G                 ;;
2705             *)                    echo $flag              ;;
2706         esac
2707     done
2708 }
2709
2710 tms470_flags(){
2711     for flag; do
2712         case $flag in
2713             -march=*|-mcpu=*)
2714                 case "${flag#*=}" in
2715                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2716                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2717                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2718                     armv6*|arm11*)          echo -mv=6   ;;
2719                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2720                                             echo -mv=5e  ;;
2721                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2722                 esac
2723                 ;;
2724             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2725             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2726             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2727             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2728             -msoft-float)   echo --float_support=vfplib       ;;
2729             -O[0-3]|-mf=*)  echo $flag                        ;;
2730             -g)             echo -g -mn                       ;;
2731             -pds=*)         echo $flag                        ;;
2732             -D*|-I*)        echo $flag                        ;;
2733             --gcc|--abi=*)  echo $flag                        ;;
2734             -me)            echo $flag                        ;;
2735         esac
2736     done
2737 }
2738
2739 probe_cc(){
2740     pfx=$1
2741     _cc=$2
2742
2743     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2744     unset _ld_o _ldflags _ld_lib _ld_path
2745     unset _depflags _DEPCMD _DEPFLAGS
2746     _flags_filter=echo
2747
2748     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2749         _type=llvm_gcc
2750         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2751         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2752         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2753         _cflags_speed='-O3'
2754         _cflags_size='-Os'
2755     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2756         _type=gcc
2757         gcc_version=$($_cc --version | head -n1)
2758         gcc_basever=$($_cc -dumpversion)
2759         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2760         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2761         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2762         if ! $_cc -dumpversion | grep -q '^2\.'; then
2763             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2764         fi
2765         _cflags_speed='-O3'
2766         _cflags_size='-Os'
2767     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2768         _type=icc
2769         _ident=$($_cc --version | head -n1)
2770         _depflags='-MMD'
2771         _cflags_speed='-O3'
2772         _cflags_size='-Os'
2773         _cflags_noopt='-O1'
2774     elif $_cc -v 2>&1 | grep -q xlc; then
2775         _type=xlc
2776         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2777         _cflags_speed='-O5'
2778         _cflags_size='-O5 -qcompact'
2779     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2780         _type=ccc
2781         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2782         _DEPFLAGS='-M'
2783         _cflags_speed='-fast'
2784         _cflags_size='-O1'
2785         _flags_filter=ccc_flags
2786     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2787         test -d "$sysroot" || die "No valid sysroot specified."
2788         _type=armcc
2789         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2790         armcc_conf="$PWD/armcc.conf"
2791         $_cc --arm_linux_configure                 \
2792              --arm_linux_config_file="$armcc_conf" \
2793              --configure_sysroot="$sysroot"        \
2794              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2795              die "Error creating armcc configuration file."
2796         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2797         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2798         as_default="${cross_prefix}gcc"
2799         _depflags='-MMD'
2800         _cflags_speed='-O3'
2801         _cflags_size='-Os'
2802     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2803         _type=tms470
2804         _ident=$($_cc -version | head -n1 | tr -s ' ')
2805         _flags='--gcc --abi=eabi -me'
2806         _cc_e='-ppl -fe=$@'
2807         _cc_o='-fe=$@'
2808         _depflags='-ppa -ppd=$(@:.o=.d)'
2809         _cflags_speed='-O3 -mf=5'
2810         _cflags_size='-O3 -mf=2'
2811         _flags_filter=tms470_flags
2812     elif $_cc -v 2>&1 | grep -q clang; then
2813         _type=clang
2814         _ident=$($_cc --version | head -n1)
2815         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2816         _cflags_speed='-O3'
2817         _cflags_size='-Os'
2818     elif $_cc -V 2>&1 | grep -q Sun; then
2819         _type=suncc
2820         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2821         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2822         _DEPFLAGS='-xM1 -xc99'
2823         _ldflags='-std=c99'
2824         _cflags_speed='-O5'
2825         _cflags_size='-O5 -xspace'
2826         _flags_filter=suncc_flags
2827     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2828         _type=pathscale
2829         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2830         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2831         _cflags_speed='-O2'
2832         _cflags_size='-Os'
2833         _flags_filter='filter_out -Wdisabled-optimization'
2834     elif $_cc -v 2>&1 | grep -q Open64; then
2835         _type=open64
2836         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2837         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2838         _cflags_speed='-O2'
2839         _cflags_size='-Os'
2840         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2841     elif $_cc -V 2>&1 | grep -q Portland; then
2842         _type=pgi
2843         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2844         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2845         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2846         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2847         _cflags_noopt="-O1"
2848         _flags_filter=pgi_flags
2849     elif $_cc 2>&1 | grep -q Microsoft; then
2850         _type=msvc
2851         _ident=$($cc 2>&1 | head -n1)
2852         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2853         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2854         _cflags_speed="-O2"
2855         _cflags_size="-O1"
2856         if $_cc 2>&1 | grep -q Linker; then
2857             _ld_o='-out:$@'
2858         else
2859             _ld_o='-Fe$@'
2860         fi
2861         _cc_o='-Fo$@'
2862         _cc_e='-P -Fi$@'
2863         _flags_filter=msvc_flags
2864         _ld_lib='lib%.a'
2865         _ld_path='-libpath:'
2866         _flags='-nologo'
2867         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2868         if [ $pfx = hostcc ]; then
2869             append _cflags -Dsnprintf=_snprintf
2870         fi
2871     elif $_cc 2>&1 | grep -q Intel; then
2872         _type=icl
2873         _ident=$($cc 2>&1 | head -n1)
2874         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2875         # Not only is O3 broken on 13.x+ but it is slower on all previous
2876         # versions (tested) as well.
2877         _cflags_speed="-O2"
2878         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2879         if $_cc 2>&1 | grep -q Linker; then
2880             _ld_o='-out:$@'
2881         else
2882             _ld_o='-Fe$@'
2883         fi
2884         _cc_o='-Fo$@'
2885         _cc_e='-P'
2886         _flags_filter=icl_flags
2887         _ld_lib='lib%.a'
2888         _ld_path='-libpath:'
2889         # -Qdiag-error to make icl error when seeing certain unknown arguments
2890         _flags='-nologo -Qdiag-error:4044,10157'
2891         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2892         # with MSVC which enables it by default.
2893         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2894         if [ $pfx = hostcc ]; then
2895             append _cflags -Dsnprintf=_snprintf
2896         fi
2897     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2898         _type=cparser
2899         _ident=$($_cc --version | head -n1)
2900         _depflags='-MMD'
2901         _cflags_speed='-O4'
2902         _cflags_size='-O2'
2903         _flags_filter=cparser_flags
2904     fi
2905
2906     eval ${pfx}_type=\$_type
2907     eval ${pfx}_ident=\$_ident
2908 }
2909
2910 set_ccvars(){
2911     eval ${1}_C=\${_cc_c-\${${1}_C}}
2912     eval ${1}_E=\${_cc_e-\${${1}_E}}
2913     eval ${1}_O=\${_cc_o-\${${1}_O}}
2914
2915     if [ -n "$_depflags" ]; then
2916         eval ${1}_DEPFLAGS=\$_depflags
2917     else
2918         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2919         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2920         eval DEP${1}FLAGS=\$_flags
2921     fi
2922 }
2923
2924 probe_cc cc "$cc"
2925 cflags_filter=$_flags_filter
2926 cflags_speed=$_cflags_speed
2927 cflags_size=$_cflags_size
2928 cflags_noopt=$_cflags_noopt
2929 add_cflags $_flags $_cflags
2930 cc_ldflags=$_ldflags
2931 set_ccvars CC
2932
2933 probe_cc hostcc "$host_cc"
2934 host_cflags_filter=$_flags_filter
2935 add_host_cflags  $_flags $_cflags
2936 set_ccvars HOSTCC
2937
2938 test -n "$cc_type" && enable $cc_type ||
2939     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2940
2941 : ${as_default:=$cc}
2942 : ${dep_cc_default:=$cc}
2943 : ${ld_default:=$cc}
2944 : ${host_ld_default:=$host_cc}
2945 set_default ar as dep_cc ld host_ld
2946
2947 probe_cc as "$as"
2948 asflags_filter=$_flags_filter
2949 add_asflags $_flags $_cflags
2950 set_ccvars AS
2951
2952 probe_cc ld "$ld"
2953 ldflags_filter=$_flags_filter
2954 add_ldflags $_flags $_ldflags
2955 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2956 LD_O=${_ld_o-$LD_O}
2957 LD_LIB=${_ld_lib-$LD_LIB}
2958 LD_PATH=${_ld_path-$LD_PATH}
2959
2960 probe_cc hostld "$host_ld"
2961 host_ldflags_filter=$_flags_filter
2962 add_host_ldflags $_flags $_ldflags
2963 HOSTLD_O=${_ld_o-$HOSTLD_O}
2964
2965 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2966     probe_cc depcc "$dep_cc"
2967     CCDEP=${_DEPCMD:-$DEPCMD}
2968     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2969     DEPCCFLAGS=$_flags
2970 fi
2971
2972 if $ar 2>&1 | grep -q Microsoft; then
2973     arflags="-nologo"
2974     ar_o='-out:$@'
2975 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2976     arflags="rq"
2977     ar_o='$@'
2978 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2979     arflags='-Xany -r -c'
2980     ar_o='$@'
2981 else
2982     arflags="rc"
2983     ar_o='$@'
2984 fi
2985
2986 add_cflags $extra_cflags
2987 add_asflags $extra_cflags
2988
2989 if test -n "$sysroot"; then
2990     case "$cc_type" in
2991         gcc|llvm_gcc|clang)
2992             add_cppflags --sysroot="$sysroot"
2993             add_ldflags --sysroot="$sysroot"
2994         ;;
2995         tms470)
2996             add_cppflags -I"$sysinclude"
2997             add_ldflags  --sysroot="$sysroot"
2998         ;;
2999     esac
3000 fi
3001
3002 if test "$cpu" = host; then
3003     enabled cross_compile &&
3004         die "--cpu=host makes no sense when cross-compiling."
3005
3006     case "$cc_type" in
3007         gcc|llvm_gcc)
3008             check_native(){
3009                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3010                 sed -n "/cc1.*$1=/{
3011                             s/.*$1=\\([^ ]*\\).*/\\1/
3012                             p
3013                             q
3014                         }" $TMPE
3015             }
3016             cpu=$(check_native -march || check_native -mcpu)
3017         ;;
3018     esac
3019
3020     test "${cpu:-host}" = host &&
3021         die "--cpu=host not supported with compiler $cc"
3022 fi
3023
3024 # Deal with common $arch aliases
3025 case "$arch" in
3026     aarch64|arm64)
3027         arch="aarch64"
3028     ;;
3029     arm*)
3030         arch="arm"
3031     ;;
3032     mips*|IP*)
3033         arch="mips"
3034     ;;
3035     parisc*|hppa*)
3036         arch="parisc"
3037     ;;
3038     "Power Macintosh"|ppc*|powerpc*)
3039         arch="ppc"
3040     ;;
3041     s390|s390x)
3042         arch="s390"
3043     ;;
3044     sh4|sh)
3045         arch="sh4"
3046     ;;
3047     sun4u|sparc*)
3048         arch="sparc"
3049     ;;
3050     tilegx|tile-gx)
3051         arch="tilegx"
3052     ;;
3053     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3054         arch="x86"
3055     ;;
3056 esac
3057
3058 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3059 enable $arch
3060
3061 # Add processor-specific flags
3062 if enabled aarch64; then
3063
3064     case $cpu in
3065         armv*)
3066             cpuflags="-march=$cpu"
3067         ;;
3068         *)
3069             cpuflags="-mcpu=$cpu"
3070         ;;
3071     esac
3072
3073 elif enabled alpha; then
3074
3075     cpuflags="-mcpu=$cpu"
3076
3077 elif enabled arm; then
3078
3079     check_arm_arch() {
3080         check_cpp_condition stddef.h \
3081             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3082             $cpuflags
3083     }
3084
3085     probe_arm_arch() {
3086         if   check_arm_arch 4;        then echo armv4;
3087         elif check_arm_arch 4T;       then echo armv4t;
3088         elif check_arm_arch 5;        then echo armv5;
3089         elif check_arm_arch 5E;       then echo armv5e;
3090         elif check_arm_arch 5T;       then echo armv5t;
3091         elif check_arm_arch 5TE;      then echo armv5te;
3092         elif check_arm_arch 5TEJ;     then echo armv5te;
3093         elif check_arm_arch 6;        then echo armv6;
3094         elif check_arm_arch 6J;       then echo armv6j;
3095         elif check_arm_arch 6K;       then echo armv6k;
3096         elif check_arm_arch 6Z;       then echo armv6z;
3097         elif check_arm_arch 6ZK;      then echo armv6zk;
3098         elif check_arm_arch 6T2;      then echo armv6t2;
3099         elif check_arm_arch 7;        then echo armv7;
3100         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3101         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3102         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3103         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3104         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3105         fi
3106     }
3107
3108     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3109
3110     case $cpu in
3111         armv*)
3112             cpuflags="-march=$cpu"
3113             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3114         ;;
3115         *)
3116             cpuflags="-mcpu=$cpu"
3117             case $cpu in
3118                 cortex-a*)                               subarch=armv7a  ;;
3119                 cortex-r*)                               subarch=armv7r  ;;
3120                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3121                 arm11*)                                  subarch=armv6   ;;
3122                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3123                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3124                 *)                             subarch=$(probe_arm_arch) ;;
3125             esac
3126         ;;
3127     esac
3128
3129     case "$subarch" in
3130         armv5t*)    enable fast_clz                ;;
3131         armv[6-8]*) enable fast_clz fast_unaligned ;;
3132     esac
3133
3134 elif enabled avr32; then
3135
3136     case $cpu in
3137         ap7[02]0[0-2])
3138             subarch="avr32_ap"
3139             cpuflags="-mpart=$cpu"
3140         ;;
3141         ap)
3142             subarch="avr32_ap"
3143             cpuflags="-march=$cpu"
3144         ;;
3145         uc3[ab]*)
3146             subarch="avr32_uc"
3147             cpuflags="-mcpu=$cpu"
3148         ;;
3149         uc)
3150             subarch="avr32_uc"
3151             cpuflags="-march=$cpu"
3152         ;;
3153     esac
3154
3155 elif enabled bfin; then
3156
3157     cpuflags="-mcpu=$cpu"
3158
3159 elif enabled mips; then
3160
3161     cpuflags="-march=$cpu"
3162
3163 elif enabled ppc; then
3164
3165     disable ldbrx
3166
3167     case $(tolower $cpu) in
3168         601|ppc601|powerpc601)
3169             cpuflags="-mcpu=601"
3170             disable altivec
3171         ;;
3172         603*|ppc603*|powerpc603*)
3173             cpuflags="-mcpu=603"
3174             disable altivec
3175         ;;
3176         604*|ppc604*|powerpc604*)
3177             cpuflags="-mcpu=604"
3178             disable altivec
3179         ;;
3180         g3|75*|ppc75*|powerpc75*)
3181             cpuflags="-mcpu=750"
3182             disable altivec
3183         ;;
3184         g4|745*|ppc745*|powerpc745*)
3185             cpuflags="-mcpu=7450"
3186         ;;
3187         74*|ppc74*|powerpc74*)
3188             cpuflags="-mcpu=7400"
3189         ;;
3190         g5|970|ppc970|powerpc970)
3191             cpuflags="-mcpu=970"
3192         ;;
3193         power[3-7]*)
3194             cpuflags="-mcpu=$cpu"
3195         ;;
3196         cell)
3197             cpuflags="-mcpu=cell"
3198             enable ldbrx
3199         ;;
3200         e500mc)
3201             cpuflags="-mcpu=e500mc"
3202             disable altivec
3203         ;;
3204         e500v2)
3205             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3206             disable altivec
3207             disable dcbzl
3208         ;;
3209         e500)
3210             cpuflags="-mcpu=8540 -mhard-float"
3211             disable altivec
3212             disable dcbzl
3213         ;;
3214     esac
3215
3216 elif enabled sparc; then
3217
3218     case $cpu in
3219         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3220             cpuflags="-mcpu=$cpu"
3221         ;;
3222         ultrasparc*|niagara[234])
3223             cpuflags="-mcpu=$cpu"
3224         ;;
3225     esac
3226
3227 elif enabled x86; then
3228
3229     case $cpu in
3230         i[345]86|pentium)
3231             cpuflags="-march=$cpu"
3232             disable mmx
3233         ;;
3234         # targets that do NOT support nopl and conditional mov (cmov)
3235         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3236             cpuflags="-march=$cpu"
3237             disable i686
3238         ;;
3239         # targets that do support nopl and conditional mov (cmov)
3240         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3241             cpuflags="-march=$cpu"
3242             enable i686
3243             enable fast_cmov
3244         ;;
3245         # targets that do support conditional mov but on which it's slow
3246         pentium4|pentium4m|prescott|nocona)
3247             cpuflags="-march=$cpu"
3248             enable i686
3249             disable fast_cmov
3250         ;;
3251     esac
3252
3253 fi
3254
3255 if [ "$cpu" != generic ]; then
3256     add_cflags  $cpuflags
3257     add_asflags $cpuflags
3258 fi
3259
3260 # compiler sanity check
3261 check_exec <<EOF
3262 int main(void){ return 0; }
3263 EOF
3264 if test "$?" != 0; then
3265     echo "$cc is unable to create an executable file."
3266     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3267         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3268         echo "Only do this if you know what cross compiling means."
3269     fi
3270     die "C compiler test failed."
3271 fi
3272
3273 add_cppflags -D_ISOC99_SOURCE
3274 check_cflags -std=c99
3275 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3276 #include <stdlib.h>
3277 EOF
3278 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3279 #include <stdlib.h>
3280 EOF
3281
3282 add_host_cppflags -D_ISOC99_SOURCE
3283 check_host_cflags -std=c99
3284 check_host_cflags -Wall
3285 check_host_cflags -O3
3286
3287 check_64bit(){
3288     arch32=$1
3289     arch64=$2
3290     expr=$3
3291     check_code cc "" "int test[2*($expr) - 1]" &&
3292         subarch=$arch64 || subarch=$arch32
3293 }
3294
3295 case "$arch" in
3296     aarch64|alpha|ia64)
3297         spic=$shared
3298     ;;
3299     mips)
3300         check_64bit mips mips64 '_MIPS_SIM > 1'
3301         spic=$shared
3302     ;;
3303     parisc)
3304         check_64bit parisc parisc64 'sizeof(void *) > 4'
3305         spic=$shared
3306     ;;
3307     ppc)
3308         check_64bit ppc ppc64 'sizeof(void *) > 4'
3309         spic=$shared
3310     ;;
3311     s390)
3312         check_64bit s390 s390x 'sizeof(void *) > 4'
3313         spic=$shared
3314     ;;
3315     sparc)
3316         check_64bit sparc sparc64 'sizeof(void *) > 4'
3317         spic=$shared
3318     ;;
3319     x86)
3320         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3321         if test "$subarch" = "x86_64"; then
3322             spic=$shared
3323         fi
3324     ;;
3325 esac
3326
3327 enable $subarch
3328 enabled spic && enable_weak pic
3329
3330 # OS specific
3331 case $target_os in
3332     aix)
3333         SHFLAGS=-shared
3334         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3335         enabled shared && add_ldflags -Wl,-brtl
3336         ;;
3337     haiku)
3338         prefix_default="/boot/common"
3339         network_extralibs="-lnetwork"
3340         host_libs=
3341         ;;
3342     sunos)
3343         SHFLAGS='-shared -Wl,-h,$$(@F)'
3344         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3345         network_extralibs="-lsocket -lnsl"
3346         # When using suncc to build, the Solaris linker will mark
3347         # an executable with each instruction set encountered by
3348         # the Solaris assembler.  As our libraries contain their own
3349         # guards for processor-specific code, instead suppress
3350         # generation of the HWCAPS ELF section on Solaris x86 only.
3351         enabled_all suncc x86 &&
3352             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3353             add_ldflags -Wl,-M,mapfile
3354         nm_default='nm -P -g'
3355         ;;
3356     netbsd)
3357         disable symver
3358         oss_indev_extralibs="-lossaudio"
3359         oss_outdev_extralibs="-lossaudio"
3360         ;;
3361     openbsd|bitrig)
3362         disable symver
3363         SHFLAGS='-shared'
3364         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3365         SLIB_INSTALL_LINKS=
3366         oss_indev_extralibs="-lossaudio"
3367         oss_outdev_extralibs="-lossaudio"
3368         ;;
3369     dragonfly)
3370         disable symver
3371         ;;
3372     freebsd)
3373         ;;
3374     bsd/os)
3375         add_extralibs -lpoll -lgnugetopt
3376         ;;
3377     darwin)
3378         gas="gas-preprocessor.pl $cc"
3379         enabled ppc && add_asflags -force_cpusubtype_ALL
3380         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3381         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3382         add_ldflags -Wl,-dynamic,-search_paths_first
3383         SLIBSUF=".dylib"
3384         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3385         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3386         objformat="macho"
3387         enabled x86_64 && objformat="macho64"
3388         enabled_any pic shared ||
3389             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3390         ;;
3391     mingw32*)
3392         if test $target_os = "mingw32ce"; then
3393             disable network
3394         else
3395             target_os=mingw32
3396         fi
3397         LIBTARGET=i386
3398         if enabled x86_64; then
3399             LIBTARGET="i386:x86-64"
3400         elif enabled arm; then
3401             LIBTARGET=arm-wince
3402         fi
3403         check_ldflags -Wl,--nxcompat
3404         check_ldflags -Wl,--dynamicbase
3405         shlibdir_default="$bindir_default"
3406         SLIBPREF=""
3407         SLIBSUF=".dll"
3408         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3409         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3410         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3411         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3412         SLIB_INSTALL_LINKS=
3413         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3414         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3415         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3416         objformat="win32"
3417         dlltool="${cross_prefix}dlltool"
3418         ranlib=:
3419         enable dos_paths
3420         ;;
3421     win32|win64)
3422         disable symver
3423         if enabled shared; then
3424             # Link to the import library instead of the normal static library
3425             # for shared libs.
3426             LD_LIB='%.lib'
3427             # Cannot build both shared and static libs with MSVC or icl.
3428             disable static
3429         fi
3430         shlibdir_default="$bindir_default"
3431         SLIBPREF=""
3432         SLIBSUF=".dll"
3433         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3434         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3435         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3436         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3437         SLIB_INSTALL_LINKS=
3438         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3439         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3440         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3441         objformat="win32"
3442         ranlib=:
3443         enable dos_paths
3444         ;;
3445     cygwin*)
3446         target_os=cygwin
3447         shlibdir_default="$bindir_default"
3448         SLIBPREF="cyg"
3449         SLIBSUF=".dll"
3450         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3451         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3452         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3453         SLIB_INSTALL_LINKS=
3454         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3455         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3456         objformat="win32"
3457         enable dos_paths
3458         ;;
3459     *-dos|freedos|opendos)
3460         network_extralibs="-lsocket"
3461         objformat="coff"
3462         enable dos_paths
3463         add_cppflags -U__STRICT_ANSI__
3464         ;;
3465     linux)
3466         enable dv1394
3467         ;;
3468     irix*)
3469         target_os=irix
3470         ranlib="echo ignoring ranlib"
3471         ;;
3472     os/2*)
3473         ln_s="cp -f"
3474         objformat="aout"
3475         add_cppflags -D_GNU_SOURCE
3476         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3477         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3478         LIBSUF="_s.a"
3479         SLIBPREF=""
3480         SLIBSUF=".dll"
3481         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3482         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3483         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3484             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3485             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3486             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3487             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3488             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3489         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3490             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3491         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3492         enable dos_paths
3493         ;;
3494     gnu/kfreebsd)
3495         add_cppflags -D_BSD_SOURCE
3496         ;;
3497     gnu)
3498         ;;
3499     qnx)
3500         add_cppflags -D_QNX_SOURCE
3501         network_extralibs="-lsocket"
3502         ;;
3503     symbian)
3504         SLIBSUF=".dll"
3505         enable dos_paths
3506         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3507         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3508         add_ldflags -Wl,--target1-abs,--no-undefined \
3509                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3510                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3511         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3512                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3513                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3514         ;;
3515     osf1)
3516         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3517         ;;
3518     minix)
3519         ;;
3520     plan9)
3521         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3522                      -D_REENTRANT_SOURCE        \
3523                      -D_RESEARCH_SOURCE         \
3524                      -DFD_SETSIZE=96            \
3525                      -DHAVE_SOCK_OPTS
3526         add_compat strtod.o strtod=avpriv_strtod
3527         network_extralibs='-lbsd'
3528         exeobjs=compat/plan9/main.o
3529         disable avserver
3530         cp_f='cp'
3531         ;;
3532     none)
3533         ;;
3534     *)
3535         die "Unknown OS '$target_os'."
3536         ;;
3537 esac
3538
3539 # determine libc flavour
3540
3541 probe_libc(){
3542     pfx=$1
3543     pfx_no_=${pfx%_}
3544     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3545     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3546         eval ${pfx}libc_type=uclibc
3547         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3548     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3549         eval ${pfx}libc_type=glibc
3550         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3551     # MinGW headers can be installed on Cygwin, so check for newlib first.
3552     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3553         eval ${pfx}libc_type=newlib
3554         add_${pfx}cppflags -U__STRICT_ANSI__
3555     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3556     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3557         eval ${pfx}libc_type=mingw64
3558         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3559         eval test \$${pfx_no_}cc_type = "gcc" &&
3560             add_${pfx}cppflags -D__printf__=__gnu_printf__
3561     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3562          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3563         eval ${pfx}libc_type=mingw32
3564         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3565             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3566             die "ERROR: MinGW32 runtime version must be >= 3.15."
3567         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3568         eval test \$${pfx_no_}cc_type = "gcc" &&
3569             add_${pfx}cppflags -D__printf__=__gnu_printf__
3570     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3571         eval ${pfx}libc_type=msvcrt
3572         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3573         # 0x601 by default unless something else is set by the user.
3574         # This can easily lead to us detecting functions only present
3575         # in such new versions and producing binaries requiring windows 7.0.
3576         # Therefore explicitly set the default to XP unless the user has
3577         # set something else on the command line.
3578         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3579             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3580     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3581         eval ${pfx}libc_type=klibc
3582     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3583         eval ${pfx}libc_type=bionic
3584     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3585         eval ${pfx}libc_type=solaris
3586         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3587     fi
3588 }
3589
3590 probe_libc
3591 test -n "$libc_type" && enable libc_$libc_type
3592 probe_libc host_
3593 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3594
3595 case $libc_type in
3596     bionic)
3597         add_compat strtod.o strtod=avpriv_strtod
3598         ;;
3599     msvcrt)
3600         add_compat strtod.o strtod=avpriv_strtod
3601         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3602                                      _snprintf=avpriv_snprintf  \
3603                                      vsnprintf=avpriv_vsnprintf
3604         ;;
3605 esac
3606
3607 # hacks for compiler/libc/os combinations
3608
3609 if enabled_all tms470 libc_glibc; then
3610     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3611     add_cppflags -D__USER_LABEL_PREFIX__=
3612     add_cppflags -D__builtin_memset=memset
3613     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3614     add_cflags   -pds=48    # incompatible redefinition of macro
3615 fi
3616
3617 if enabled_all ccc libc_glibc; then
3618     add_ldflags -Wl,-z,now  # calls to libots crash without this
3619 fi
3620
3621 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3622     add_cppflags '-I\$(SRC_PATH)/compat/float'
3623
3624 esc(){
3625     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3626 }
3627
3628 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3629
3630 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3631
3632 set_default $PATHS_LIST
3633 set_default nm
3634
3635 # we need to build at least one lib type
3636 if ! enabled_any static shared; then
3637     cat <<EOF
3638 At least one library type must be built.
3639 Specify --enable-static to build the static libraries or --enable-shared to
3640 build the shared libraries as well. To only build the shared libraries specify
3641 --disable-static in addition to --enable-shared.
3642 EOF
3643     exit 1;
3644 fi
3645
3646 die_license_disabled() {
3647     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3648 }
3649
3650 die_license_disabled gpl libcdio
3651 die_license_disabled gpl libx264
3652 die_license_disabled gpl libx265
3653 die_license_disabled gpl libxavs
3654 die_license_disabled gpl libxvid
3655 die_license_disabled gpl x11grab
3656
3657 die_license_disabled nonfree libfaac
3658 die_license_disabled nonfree libfdk_aac
3659 die_license_disabled nonfree openssl
3660
3661 die_license_disabled version3 libopencore_amrnb
3662 die_license_disabled version3 libopencore_amrwb
3663 die_license_disabled version3 libvo_aacenc
3664 die_license_disabled version3 libvo_amrwbenc
3665
3666 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3667
3668 disabled optimizations || check_cflags -fomit-frame-pointer
3669
3670 enable_weak_pic() {
3671     disabled pic && return
3672     enable pic
3673     add_cppflags -DPIC
3674     case "$target_os" in
3675     mingw*|cygwin*)
3676         ;;
3677     *)
3678         add_cflags -fPIC
3679         ;;
3680     esac
3681     add_asflags  -fPIC
3682 }
3683
3684 enabled pic && enable_weak_pic
3685
3686 check_cc <<EOF || die "Symbol mangling check failed."
3687 int ff_extern;
3688 EOF
3689 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3690 extern_prefix=${sym%%ff_extern*}
3691
3692 check_cc <<EOF && enable_weak inline_asm
3693 void foo(void) { __asm__ volatile ("" ::); }
3694 EOF
3695
3696 _restrict=
3697 for restrict_keyword in restrict __restrict__ __restrict; do
3698     check_cc <<EOF && _restrict=$restrict_keyword && break
3699 void foo(char * $restrict_keyword p);
3700 EOF
3701 done
3702
3703 check_cc <<EOF && enable pragma_deprecated
3704 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3705 EOF
3706
3707 check_cc <<EOF && enable attribute_packed
3708 struct { int x; } __attribute__((packed)) x;
3709 EOF
3710
3711 check_cc <<EOF && enable attribute_may_alias
3712 union { int x; } __attribute__((may_alias)) x;
3713 EOF
3714
3715 check_cc <<EOF || die "endian test failed"
3716 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3717 EOF
3718 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3719
3720 check_inline_asm inline_asm_labels '"1:\n"'
3721
3722 if enabled aarch64; then
3723     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3724     # internal assembler in clang 3.3 does not support this instruction
3725     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3726     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3727
3728     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3729
3730 elif enabled alpha; then
3731
3732     check_cflags -mieee
3733
3734 elif enabled arm; then
3735
3736     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3737     enabled thumb && check_cflags -mthumb || check_cflags -marm
3738     nogas=die
3739
3740     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3741         enable vfp_args
3742     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3743         case "${cross_prefix:-$cc}" in
3744             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3745             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3746 __asm__ (".eabi_attribute 28, 1");
3747 int main(void) { return 0; }
3748 EOF
3749         esac
3750         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3751     fi
3752
3753     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3754     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3755     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3756     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3757     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3758     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3759
3760     [ $target_os = linux ] ||
3761         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3762             $ARCH_EXT_LIST_ARM
3763
3764     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3765
3766     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3767
3768 elif enabled mips; then
3769
3770     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3771
3772 elif enabled parisc; then
3773
3774     if enabled gcc; then
3775         case $($cc -dumpversion) in
3776             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3777         esac
3778     fi
3779
3780 elif enabled ppc; then
3781
3782     enable local_aligned_8 local_aligned_16
3783
3784     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3785     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3786     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3787     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3788
3789     # AltiVec flags: The FSF version of GCC differs from the Apple version
3790     if enabled altivec; then
3791         nogas=warn
3792         check_cflags -maltivec -mabi=altivec &&
3793         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3794         check_cflags -faltivec
3795
3796         # check if our compiler supports Motorola AltiVec C API
3797         check_cc <<EOF || disable altivec
3798 $inc_altivec_h
3799 int main(void) {
3800     vector signed int v1 = (vector signed int) { 0 };
3801     vector signed int v2 = (vector signed int) { 1 };
3802     v1 = vec_add(v1, v2);
3803     return 0;
3804 }
3805 EOF
3806
3807         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3808     fi
3809
3810 elif enabled x86; then
3811
3812     check_builtin rdtsc    intrin.h   "__rdtsc()"
3813     check_builtin mm_empty mmintrin.h "_mm_empty()"
3814
3815     enable local_aligned_8 local_aligned_16
3816
3817     # check whether EBP is available on x86
3818     # As 'i' is stored on the stack, this program will crash
3819     # if the base pointer is used to access it because the
3820     # base pointer is cleared in the inline assembly code.
3821     check_exec_crash <<EOF && enable ebp_available
3822 volatile int i=0;
3823 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3824 return i;
3825 EOF
3826
3827     # check whether EBX is available on x86
3828     check_inline_asm ebx_available '""::"b"(0)' &&
3829         check_inline_asm ebx_available '"":::"%ebx"'
3830
3831     # check whether xmm clobbers are supported
3832     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3833
3834     # check whether binutils is new enough to compile SSSE3/MMXEXT
3835     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3836     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3837
3838     if ! disabled_any asm mmx yasm; then
3839         if check_cmd $yasmexe --version; then
3840             enabled x86_64 && yasm_extra="-m amd64"
3841             yasm_debug="-g dwarf2"
3842         elif check_cmd nasm -v; then
3843             yasmexe=nasm
3844             yasm_debug="-g -F dwarf"
3845             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3846         fi
3847
3848         YASMFLAGS="-f $objformat $yasm_extra"
3849         enabled pic               && append YASMFLAGS "-DPIC"
3850         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3851         case "$objformat" in
3852             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3853         esac
3854
3855         check_yasm "movbe ecx, [5]" && enable yasm ||
3856             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3857         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3858         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3859         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3860         check_yasm "CPU amdnop" || disable cpunop
3861     fi
3862
3863     case "$cpu" in
3864         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3865             disable fast_clz
3866         ;;
3867     esac
3868
3869 fi
3870
3871 if enabled asm; then
3872     as=${gas:=$as}
3873     check_as <<EOF && enable gnu_as || \
3874         $nogas "GNU assembler not found, install gas-preprocessor"
3875 .macro m n
3876 \n: .int 0
3877 .endm
3878 m x
3879 EOF
3880 fi
3881
3882 check_ldflags -Wl,--as-needed
3883
3884 if check_func dlopen; then
3885     ldl=
3886 elif check_func dlopen -ldl; then
3887     ldl=-ldl
3888 fi
3889
3890 if ! disabled network; then
3891     check_func getaddrinfo $network_extralibs
3892     check_func getservbyport $network_extralibs
3893     check_func inet_aton $network_extralibs
3894
3895     check_type netdb.h "struct addrinfo"
3896     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3897     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3898     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3899     check_type poll.h "struct pollfd"
3900     check_type netinet/sctp.h "struct sctp_event_subscribe"
3901     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3902     check_type netinet/in.h "struct sockaddr_in6"
3903     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3904     check_type "sys/types.h sys/socket.h" socklen_t
3905
3906     # Prefer arpa/inet.h over winsock2
3907     if check_header arpa/inet.h ; then
3908         check_func closesocket
3909     elif check_header winsock2.h ; then
3910         check_func_headers winsock2.h closesocket -lws2 &&
3911             network_extralibs="-lws2" ||
3912         { check_func_headers winsock2.h closesocket -lws2_32 &&
3913             network_extralibs="-lws2_32"; } || disable winsock2_h network
3914         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3915
3916         check_type ws2tcpip.h socklen_t
3917         check_type ws2tcpip.h "struct addrinfo"
3918         check_type ws2tcpip.h "struct group_source_req"
3919         check_type ws2tcpip.h "struct ip_mreq_source"
3920         check_type ws2tcpip.h "struct ipv6_mreq"
3921         check_type winsock2.h "struct pollfd"
3922         check_struct winsock2.h "struct sockaddr" sa_len
3923         check_type ws2tcpip.h "struct sockaddr_in6"
3924         check_type ws2tcpip.h "struct sockaddr_storage"
3925     else
3926         disable network
3927     fi
3928 fi
3929
3930 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3931 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3932 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3933 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3934
3935 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3936 check_func  ${malloc_prefix}memalign            && enable memalign
3937 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3938
3939 check_func  fcntl
3940 check_func  fork
3941 check_func  gethrtime
3942 check_func  getopt
3943 check_func  getrusage
3944 check_func  gettimeofday
3945 check_func  isatty
3946 check_func  localtime_r
3947 check_func  mach_absolute_time
3948 check_func  mkstemp
3949 check_func  mmap
3950 check_func  mprotect
3951 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3952 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3953 check_func  sched_getaffinity
3954 check_func  setrlimit
3955 check_func  strerror_r
3956 check_func  strptime
3957 check_func  sysconf
3958 check_func  sysctl
3959 check_func  usleep
3960
3961 check_func_headers io.h setmode
3962 check_func_headers stdlib.h getenv
3963
3964 check_func_headers windows.h CoTaskMemFree -lole32
3965 check_func_headers windows.h GetProcessAffinityMask
3966 check_func_headers windows.h GetProcessTimes
3967 check_func_headers windows.h GetSystemTimeAsFileTime
3968 check_func_headers windows.h MapViewOfFile
3969 check_func_headers windows.h SetConsoleTextAttribute
3970 check_func_headers windows.h Sleep
3971 check_func_headers windows.h VirtualAlloc
3972
3973 check_header direct.h
3974 check_header dlfcn.h
3975 check_header dxva.h
3976 check_header dxva2api.h
3977 check_header io.h
3978 check_header mach/mach_time.h
3979 check_header malloc.h
3980 check_header poll.h
3981 check_header sys/mman.h
3982 check_header sys/param.h
3983 check_header sys/resource.h
3984 check_header sys/select.h
3985 check_header sys/time.h
3986 check_header sys/un.h
3987 check_header unistd.h
3988 check_header vdpau/vdpau.h
3989 check_header vdpau/vdpau_x11.h
3990 check_header VideoDecodeAcceleration/VDADecoder.h
3991 check_header windows.h
3992 check_header X11/extensions/XvMClib.h
3993
3994 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3995 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3996 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3997
3998 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3999
4000 if ! disabled w32threads && ! enabled pthreads; then
4001     check_func_headers "windows.h process.h" _beginthreadex &&
4002         enable w32threads || disable w32threads
4003 fi
4004
4005 # check for some common methods of building with pthread support
4006 # do this before the optional library checks as some of them require pthreads
4007 if ! disabled pthreads && ! enabled w32threads; then
4008     enable pthreads
4009     if check_func pthread_join -pthread; then
4010         add_cflags -pthread
4011         add_extralibs -pthread
4012     elif check_func pthread_join -pthreads; then
4013         add_cflags -pthreads
4014         add_extralibs -pthreads
4015     elif check_func pthread_join -lpthreadGC2; then
4016         add_extralibs -lpthreadGC2
4017     elif check_lib pthread.h pthread_join -lpthread; then
4018         :
4019     elif ! check_func pthread_join; then
4020         disable pthreads
4021     fi
4022 fi
4023
4024 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4025 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4026
4027 check_lib math.h sin -lm && LIBM="-lm"
4028 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4029
4030 atan2f_args=2
4031 ldexpf_args=2
4032 powf_args=2
4033
4034 for func in $MATH_FUNCS; do
4035     eval check_mathfunc $func \${${func}_args:-1}
4036 done
4037
4038 # these are off by default, so fail if requested and not available
4039 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4040                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4041                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4042 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4043 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4044 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4045 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4046 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4047 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4048 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4049 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4050                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4051                                done || die "ERROR: libgsm not found"; }
4052 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4053 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4054 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4055 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4056 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4057 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4058                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4059 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4060 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4061 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4062 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4063 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4064 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4065 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4066 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4067 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4068 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4069 enabled libvpx            && {
4070     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4071                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4072     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4073                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4074     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4075     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4076 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4077 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4078 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4079                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4080                                die "ERROR: libx264 version must be >= 0.118."; }
4081 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4082                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4083                                die "ERROR: libx265 version must be >= 13."; }
4084 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4085 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4086 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4087                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4088                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4089                                die "ERROR: openssl not found"; }
4090
4091 if enabled gnutls; then
4092     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4093     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4094 fi
4095
4096 # libdc1394 check
4097 if enabled libdc1394; then
4098     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4099         enable libdc1394_2; } ||
4100     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4101         enable libdc1394_1; } ||
4102     die "ERROR: No version of libdc1394 found "
4103 fi
4104
4105 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4106     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4107     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4108     enable sdl
4109 fi
4110
4111 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4112 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4113
4114 check_header linux/fb.h
4115 check_header linux/videodev2.h
4116 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4117
4118 check_header sys/videoio.h
4119
4120 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4121 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4122 # w32api 3.12 had it defined wrong
4123 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4124
4125 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4126 { check_header dev/bktr/ioctl_meteor.h &&
4127   check_header dev/bktr/ioctl_bt848.h; } ||
4128 { check_header machine/ioctl_meteor.h &&
4129   check_header machine/ioctl_bt848.h; } ||
4130 { check_header dev/video/meteor/ioctl_meteor.h &&
4131   check_header dev/video/bktr/ioctl_bt848.h; } ||
4132 check_header dev/ic/bt8xx.h
4133
4134 check_header sndio.h
4135 check_header sys/soundcard.h
4136 check_header soundcard.h
4137
4138 enabled_any alsa_indev alsa_outdev &&
4139     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4140
4141 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4142     check_func jack_port_get_latency_range -ljack
4143
4144 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4145
4146 if enabled libcdio; then
4147     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4148     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4149 fi
4150
4151 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4152
4153 enabled x11grab                                           &&
4154 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4155 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4156 { enabled xlib || die "ERROR: Xlib not found"; }
4157
4158 enabled vdpau &&
4159     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4160     disable vdpau
4161
4162 enabled vdpau && enabled xlib &&
4163     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4164     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4165     enable vdpau_x11
4166
4167 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4168
4169 # add some useful compiler flags if supported
4170 check_cflags -Wdeclaration-after-statement
4171 check_cflags -Wall
4172 check_cflags -Wdisabled-optimization
4173 check_cflags -Wpointer-arith
4174 check_cflags -Wredundant-decls
4175 check_cflags -Wcast-qual
4176 check_cflags -Wwrite-strings
4177 check_cflags -Wtype-limits
4178 check_cflags -Wundef
4179 check_cflags -Wmissing-prototypes
4180 check_cflags -Wstrict-prototypes
4181 enabled extra_warnings && check_cflags -Winline
4182
4183 check_disable_warning(){
4184     warning_flag=-W${1#-Wno-}
4185     test_cflags $warning_flag && add_cflags $1
4186 }
4187
4188 check_disable_warning -Wno-parentheses
4189 check_disable_warning -Wno-switch
4190 check_disable_warning -Wno-format-zero-length
4191 check_disable_warning -Wno-pointer-sign
4192
4193 # add some linker flags
4194 check_ldflags -Wl,--warn-common
4195 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4196 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4197
4198 # add some strip flags
4199 # -wN '..@*' is more selective than -x, but not available everywhere.
4200 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4201
4202 enabled neon_clobber_test &&
4203     check_ldflags -Wl,--wrap,avcodec_open2              \
4204                   -Wl,--wrap,avcodec_decode_audio4      \
4205                   -Wl,--wrap,avcodec_decode_video2      \
4206                   -Wl,--wrap,avcodec_decode_subtitle2   \
4207                   -Wl,--wrap,avcodec_encode_audio2      \
4208                   -Wl,--wrap,avcodec_encode_video2      \
4209                   -Wl,--wrap,avcodec_encode_subtitle    \
4210                   -Wl,--wrap,avresample_convert ||
4211     disable neon_clobber_test
4212
4213 enabled xmm_clobber_test &&
4214     check_ldflags -Wl,--wrap,avcodec_open2              \
4215                   -Wl,--wrap,avcodec_decode_audio4      \
4216                   -Wl,--wrap,avcodec_decode_video2      \
4217                   -Wl,--wrap,avcodec_decode_subtitle2   \
4218                   -Wl,--wrap,avcodec_encode_audio2      \
4219                   -Wl,--wrap,avcodec_encode_video2      \
4220                   -Wl,--wrap,avcodec_encode_subtitle    \
4221                   -Wl,--wrap,avresample_convert         \
4222                   -Wl,--wrap,sws_scale ||
4223     disable xmm_clobber_test
4224
4225 echo "X{};" > $TMPV
4226 if test_ldflags -Wl,--version-script,$TMPV; then
4227     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4228     check_cc <<EOF && enable symver_asm_label
4229 void ff_foo(void) __asm__ ("av_foo@VERSION");
4230 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4231 EOF
4232     check_cc <<EOF && enable symver_gnu_asm
4233 __asm__(".symver ff_foo,av_foo@VERSION");
4234 void ff_foo(void) {}
4235 EOF
4236 fi
4237
4238 if [ -z "$optflags" ]; then
4239     if enabled small; then
4240         optflags=$cflags_size
4241     elif enabled optimizations; then
4242         optflags=$cflags_speed
4243     else
4244         optflags=$cflags_noopt
4245     fi
4246 fi
4247
4248 check_optflags(){
4249     check_cflags "$@"
4250     enabled lto && check_ldflags "$@"
4251 }
4252
4253
4254 if enabled lto; then
4255     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4256     check_cflags  -flto
4257     check_ldflags -flto $cpuflags
4258 fi
4259
4260 check_optflags $optflags
4261 check_optflags -fno-math-errno
4262 check_optflags -fno-signed-zeros
4263
4264 if enabled icc; then
4265     # Just warnings, no remarks
4266     check_cflags -w1
4267     # -wd: Disable following warnings
4268     # 144, 167, 556: -Wno-pointer-sign
4269     # 1292: attribute "foo" ignored
4270     # 1419: external declaration in primary source file
4271     # 10006: ignoring unknown option -fno-signed-zeros
4272     # 10148: ignoring unknown option -Wno-parentheses
4273     # 10156: ignoring option '-W'; no argument required
4274     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4275     # 11030: Warning unknown option --as-needed
4276     # 10156: ignoring option '-export'; no argument required
4277     check_ldflags -wd10156,11030
4278     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4279     enable ebp_available
4280     if enabled x86_32; then
4281         icc_version=$($cc -dumpversion)
4282         test ${icc_version%%.*} -ge 11 &&
4283             check_cflags -falign-stack=maintain-16-byte ||
4284             disable aligned_stack
4285     fi
4286 elif enabled ccc; then
4287     # disable some annoying warnings
4288     add_cflags -msg_disable bitnotint
4289     add_cflags -msg_disable mixfuncvoid
4290     add_cflags -msg_disable nonstandcast
4291     add_cflags -msg_disable unsupieee
4292 elif enabled gcc; then
4293     check_optflags -fno-tree-vectorize
4294     check_cflags -Werror=implicit-function-declaration
4295     check_cflags -Werror=missing-prototypes
4296     check_cflags -Werror=return-type
4297     check_cflags -Werror=declaration-after-statement
4298     check_cflags -Werror=vla
4299     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4300 elif enabled llvm_gcc; then
4301     check_cflags -mllvm -stack-alignment=16
4302 elif enabled clang; then
4303     check_cflags -mllvm -stack-alignment=16
4304     check_cflags -Qunused-arguments
4305     check_cflags -Werror=implicit-function-declaration
4306     check_cflags -Werror=missing-prototypes
4307     check_cflags -Werror=return-type
4308 elif enabled cparser; then
4309     add_cflags -Wno-missing-variable-declarations
4310     add_cflags -Wno-empty-statement
4311 elif enabled armcc; then
4312     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4313     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4314     # 2523: use of inline assembler is deprecated
4315     add_cflags -W${armcc_opt},--diag_suppress=2523
4316     add_cflags -W${armcc_opt},--diag_suppress=1207
4317     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4318     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4319     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4320     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4321 elif enabled tms470; then
4322     add_cflags -pds=824 -pds=837
4323     disable inline_asm
4324 elif enabled pathscale; then
4325     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4326 elif enabled_any msvc icl; then
4327     enabled x86_32 && disable aligned_stack
4328     enabled_all x86_32 debug && add_cflags -Oy-
4329     enabled debug && add_ldflags -debug
4330     enable pragma_deprecated
4331     if enabled icl; then
4332         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4333         # (correctly) on icl 13.x.
4334         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4335             add_cflags -Qansi-alias
4336         # icl will pass the inline asm tests but inline asm is currently
4337         # not supported (build will fail)
4338         disable inline_asm
4339     fi
4340 fi
4341
4342 case $as_type in
4343     clang)
4344         add_asflags -Qunused-arguments
4345     ;;
4346 esac
4347
4348 case $ld_type in
4349     clang)
4350         check_ldflags -Qunused-arguments
4351     ;;
4352 esac
4353
4354 case $target_os in
4355     osf1)
4356         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4357     ;;
4358     plan9)
4359         add_cppflags -Dmain=plan9_main
4360     ;;
4361 esac
4362
4363 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4364
4365 check_deps $CONFIG_LIST       \
4366            $CONFIG_EXTRA      \
4367            $HAVE_LIST         \
4368            $ALL_COMPONENTS    \
4369
4370 enabled_all dxva2 CoTaskMemFree &&
4371     prepend avconv_libs $($ldflags_filter "-lole32") &&
4372     enable dxva2_lib
4373
4374 ! enabled_any memalign posix_memalign aligned_malloc &&
4375     enabled_any $need_memalign && enable memalign_hack
4376
4377 for thread in $THREADS_LIST; do
4378     if enabled $thread; then
4379         test -n "$thread_type" &&
4380             die "ERROR: Only one thread type must be selected." ||
4381             thread_type="$thread"
4382     fi
4383 done
4384
4385 # conditional library dependencies, in linking order
4386 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4387 enabled resample_filter && prepend avfilter_deps "avresample"
4388 enabled scale_filter    && prepend avfilter_deps "swscale"
4389
4390 expand_deps(){
4391     lib_deps=${1}_deps
4392     eval "deps=\$$lib_deps"
4393     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4394     unique $lib_deps
4395 }
4396
4397 map 'expand_deps $v' $LIBRARY_LIST
4398
4399 echo "install prefix            $prefix"
4400 echo "source path               $source_path"
4401 echo "C compiler                $cc"
4402 echo "C library                 $libc_type"
4403 if test "$host_cc" != "$cc"; then
4404     echo "host C compiler           $host_cc"
4405     echo "host C library            $host_libc_type"
4406 fi
4407 echo "ARCH                      $arch ($cpu)"
4408 if test "$build_suffix" != ""; then
4409     echo "build suffix              $build_suffix"
4410 fi
4411 if test "$extra_version" != ""; then
4412     echo "version string suffix     $extra_version"
4413 fi
4414 echo "big-endian                ${bigendian-no}"
4415 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4416 if enabled x86; then
4417     echo "${yasmexe}                      ${yasm-no}"
4418     echo "MMX enabled               ${mmx-no}"
4419     echo "MMXEXT enabled            ${mmxext-no}"
4420     echo "3DNow! enabled            ${amd3dnow-no}"
4421     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4422     echo "SSE enabled               ${sse-no}"
4423     echo "SSSE3 enabled             ${ssse3-no}"
4424     echo "AVX enabled               ${avx-no}"
4425     echo "XOP enabled               ${xop-no}"
4426     echo "FMA3 enabled              ${fma3-no}"
4427     echo "FMA4 enabled              ${fma4-no}"
4428     echo "i686 features enabled     ${i686-no}"
4429     echo "CMOV is fast              ${fast_cmov-no}"
4430     echo "EBX available             ${ebx_available-no}"
4431     echo "EBP available             ${ebp_available-no}"
4432 fi
4433 if enabled aarch64; then
4434     echo "NEON enabled              ${neon-no}"
4435     echo "VFP enabled               ${vfp-no}"
4436 fi
4437 if enabled arm; then
4438     echo "ARMv5TE enabled           ${armv5te-no}"
4439     echo "ARMv6 enabled             ${armv6-no}"
4440     echo "ARMv6T2 enabled           ${armv6t2-no}"
4441     echo "VFP enabled               ${vfp-no}"
4442     echo "NEON enabled              ${neon-no}"
4443 fi
4444 if enabled ppc; then
4445     echo "AltiVec enabled           ${altivec-no}"
4446     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4447     echo "dcbzl available           ${dcbzl-no}"
4448 fi
4449 echo "debug symbols             ${debug-no}"
4450 echo "optimize for size         ${small-no}"
4451 echo "optimizations             ${optimizations-no}"
4452 echo "static                    ${static-no}"
4453 echo "shared                    ${shared-no}"
4454 echo "new filter support        ${avfilter-no}"
4455 echo "network support           ${network-no}"
4456 echo "threading support         ${thread_type-no}"
4457 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4458 echo "SDL support               ${sdl-no}"
4459 test -n "$random_seed" &&
4460     echo "random seed               ${random_seed}"
4461 echo
4462
4463 echo "External libraries:"
4464 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4465 echo
4466
4467 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4468     echo "Enabled ${type}s:"
4469     eval list=\$$(toupper $type)_LIST
4470     print_enabled '_*' $list | print_3_columns
4471     echo
4472 done
4473
4474 license="LGPL version 2.1 or later"
4475 if enabled nonfree; then
4476     license="nonfree and unredistributable"
4477 elif enabled gplv3; then
4478     license="GPL version 3 or later"
4479 elif enabled lgplv3; then
4480     license="LGPL version 3 or later"
4481 elif enabled gpl; then
4482     license="GPL version 2 or later"
4483 fi
4484
4485 echo "License: $license"
4486
4487 echo "Creating config.mak and config.h..."
4488
4489 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4490
4491 config_files="$TMPH config.mak"
4492
4493 cat > config.mak <<EOF
4494 # Automatically generated by configure - do not modify!
4495 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4496 prefix=$prefix
4497 LIBDIR=\$(DESTDIR)$libdir
4498 SHLIBDIR=\$(DESTDIR)$shlibdir
4499 INCDIR=\$(DESTDIR)$incdir
4500 BINDIR=\$(DESTDIR)$bindir
4501 DATADIR=\$(DESTDIR)$datadir
4502 DOCDIR=\$(DESTDIR)$docdir
4503 MANDIR=\$(DESTDIR)$mandir
4504 SRC_PATH=$source_path
4505 CC_IDENT=$cc_ident
4506 ARCH=$arch
4507 CC=$cc
4508 AS=$as
4509 LD=$ld
4510 DEPCC=$dep_cc
4511 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4512 DEPAS=$as
4513 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4514 YASM=$yasmexe
4515 DEPYASM=$yasmexe
4516 AR=$ar
4517 ARFLAGS=$arflags
4518 AR_O=$ar_o
4519 RANLIB=$ranlib
4520 STRIP=$strip
4521 LN_S=$ln_s
4522 CPPFLAGS=$CPPFLAGS
4523 CFLAGS=$CFLAGS
4524 ASFLAGS=$ASFLAGS
4525 AS_C=$AS_C
4526 AS_O=$AS_O
4527 CC_C=$CC_C
4528 CC_E=$CC_E
4529 CC_O=$CC_O
4530 LD_O=$LD_O
4531 LD_LIB=$LD_LIB
4532 LD_PATH=$LD_PATH
4533 DLLTOOL=$dlltool
4534 LDFLAGS=$LDFLAGS
4535 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4536 STRIPFLAGS=$STRIPFLAGS
4537 YASMFLAGS=$YASMFLAGS
4538 BUILDSUF=$build_suffix
4539 FULLNAME=$FULLNAME
4540 LIBPREF=$LIBPREF
4541 LIBSUF=$LIBSUF
4542 LIBNAME=$LIBNAME
4543 SLIBPREF=$SLIBPREF
4544 SLIBSUF=$SLIBSUF
4545 EXESUF=$EXESUF
4546 EXTRA_VERSION=$extra_version
4547 CCDEP=$CCDEP
4548 CCDEP_FLAGS=$CCDEP_FLAGS
4549 ASDEP=$ASDEP
4550 ASDEP_FLAGS=$ASDEP_FLAGS
4551 CC_DEPFLAGS=$CC_DEPFLAGS
4552 AS_DEPFLAGS=$AS_DEPFLAGS
4553 HOSTCC=$host_cc
4554 HOSTLD=$host_ld
4555 HOSTCFLAGS=$host_cflags
4556 HOSTCPPFLAGS=$host_cppflags
4557 HOSTEXESUF=$HOSTEXESUF
4558 HOSTLDFLAGS=$host_ldflags
4559 HOSTLIBS=$host_libs
4560 DEPHOSTCC=$host_cc
4561 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4562 HOSTCCDEP=$HOSTCCDEP
4563 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4564 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4565 HOSTCC_C=$HOSTCC_C
4566 HOSTCC_O=$HOSTCC_O
4567 HOSTLD_O=$HOSTLD_O
4568 TARGET_EXEC=$target_exec $target_exec_args
4569 TARGET_PATH=$target_path
4570 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4571 CFLAGS-avplay=$sdl_cflags
4572 ZLIB=$($ldflags_filter -lz)
4573 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4574 EXTRALIBS=$extralibs
4575 COMPAT_OBJS=$compat_objs
4576 EXEOBJS=$exeobjs
4577 INSTALL=install
4578 LIBTARGET=${LIBTARGET}
4579 SLIBNAME=${SLIBNAME}
4580 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4581 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4582 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4583 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4584 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4585 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4586 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4587 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4588 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4589 EOF
4590
4591 get_version(){
4592     lcname=lib${1}
4593     name=$(toupper $lcname)
4594     file=$source_path/$lcname/version.h
4595     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4596     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4597     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4598     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4599     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4600 }
4601
4602 map 'get_version $v' $LIBRARY_LIST
4603
4604 map 'eval echo "FFLIBS-${v}=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4605
4606 print_program_libs(){
4607     eval "program_libs=\$${1}_libs"
4608     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4609 }
4610
4611 map 'print_program_libs $v' $PROGRAM_LIST
4612
4613 cat > $TMPH <<EOF
4614 /* Automatically generated by configure - do not modify! */
4615 #ifndef LIBAV_CONFIG_H
4616 #define LIBAV_CONFIG_H
4617 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4618 #define LIBAV_LICENSE "$(c_escape $license)"
4619 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4620 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4621 #define restrict $_restrict
4622 #define EXTERN_PREFIX "${extern_prefix}"
4623 #define EXTERN_ASM ${extern_prefix}
4624 #define SLIBSUF "$SLIBSUF"
4625 EOF
4626
4627 test -n "$malloc_prefix" &&
4628     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4629
4630 if enabled yasm; then
4631     append config_files $TMPASM
4632     printf '' >$TMPASM
4633 fi
4634
4635 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4636
4637 print_config ARCH_   "$config_files" $ARCH_LIST
4638 print_config HAVE_   "$config_files" $HAVE_LIST
4639 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4640                                      $CONFIG_EXTRA      \
4641                                      $ALL_COMPONENTS    \
4642
4643 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4644
4645 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4646 cp_if_changed $TMPH config.h
4647 touch .config
4648
4649 enabled yasm && cp_if_changed $TMPASM config.asm
4650
4651 cat > $TMPH <<EOF
4652 /* Generated by ffconf */
4653 #ifndef AVUTIL_AVCONFIG_H
4654 #define AVUTIL_AVCONFIG_H
4655 EOF
4656
4657 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4658
4659 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4660
4661 cp_if_changed $TMPH libavutil/avconfig.h
4662
4663 test -n "$WARNINGS" && printf "\n$WARNINGS"
4664
4665 # build pkg-config files
4666
4667 lib_version(){
4668     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4669 }
4670
4671 pkgconfig_generate(){
4672     name=$1
4673     shortname=${name#lib}${build_suffix}
4674     comment=$2
4675     version=$3
4676     libs=$4
4677     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
4678     requires=${requires%, }
4679     enabled ${name#lib} || return 0
4680     mkdir -p $name
4681     cat <<EOF > $name/$name.pc
4682 prefix=$prefix
4683 exec_prefix=\${prefix}
4684 libdir=$libdir
4685 includedir=$incdir
4686
4687 Name: $name
4688 Description: $comment
4689 Version: $version
4690 Requires: $(enabled shared || echo $requires)
4691 Requires.private: $(enabled shared && echo $requires)
4692 Conflicts:
4693 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4694 Libs.private: $(enabled shared && echo $libs)
4695 Cflags: -I\${includedir}
4696 EOF
4697     cat <<EOF > $name/$name-uninstalled.pc
4698 prefix=
4699 exec_prefix=
4700 libdir=\${pcfiledir}
4701 includedir=${source_path}
4702
4703 Name: $name
4704 Description: $comment
4705 Version: $version
4706 Requires: $requires
4707 Conflicts:
4708 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4709 Cflags: -I\${includedir}
4710 EOF
4711 }
4712
4713 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4714 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
4715 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
4716 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
4717 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
4718 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs"
4719 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"