configure

   1 #!/bin/sh
   2 #
   3 # Libav configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken Libav."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --prefix=PREFIX          install in PREFIX [$prefix]
  82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
  84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
  85   --libdir=DIR             install libs in DIR [PREFIX/lib]
  86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  87   --incdir=DIR             install includes in DIR [PREFIX/include]
  88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
  90
  91 Licensing options:
  92   --enable-gpl             allow use of GPL code, the resulting libs
  93                            and binaries will be under GPL [no]
  94   --enable-version3        upgrade (L)GPL to version 3 [no]
  95   --enable-nonfree         allow use of nonfree code, the resulting libs
  96                            and binaries will be unredistributable [no]
  97
  98 Configuration options:
  99   --disable-static         do not build static libraries [no]
 100   --enable-shared          build shared libraries [no]
 101   --enable-small           optimize for size instead of speed
 102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
 103   --enable-gray            enable full grayscale support (slower color)
 104   --disable-swscale-alpha  disable alpha channel support in swscale
 105   --disable-all            disable building components, libraries and programs
 106
 107 Program options:
 108   --disable-programs       do not build command line programs
 109   --disable-avconv         disable avconv build
 110   --disable-avplay         disable avplay build
 111   --disable-avprobe        disable avprobe build
 112   --disable-avserver       deprecated, does nothing
 113
 114 Component options:
 115   --disable-doc            do not build documentation
 116   --disable-avdevice       disable libavdevice build
 117   --disable-avcodec        disable libavcodec build
 118   --disable-avformat       disable libavformat build
 119   --disable-avutil         disable libavutil build
 120   --disable-swscale        disable libswscale build
 121   --disable-avfilter       disable video filter support [no]
 122   --disable-avresample     disable libavresample build [no]
 123   --disable-pthreads       disable pthreads [auto]
 124   --disable-w32threads     disable Win32 threads [auto]
 125   --disable-network        disable network support [no]
 126   --disable-dct            disable DCT code
 127   --disable-error-resilience disable error resilience code
 128   --disable-lsp            disable LSP code
 129   --disable-lzo            disable LZO decoder code
 130   --disable-mdct           disable MDCT code
 131   --disable-rdft           disable RDFT code
 132   --disable-fft            disable FFT code
 133   --disable-faan           disable floating point AAN (I)DCT code
 134
 135 Hardware accelerators:
 136   --enable-d3d11va         enable D3D11VA code
 137   --enable-dxva2           enable DXVA2 code
 138   --enable-vaapi           enable VAAPI code
 139   --enable-vda             enable VDA code
 140   --enable-vdpau           enable VDPAU code
 141
 142 Individual component options:
 143   --disable-everything     disable all components listed below
 144   --disable-encoder=NAME   disable encoder NAME
 145   --enable-encoder=NAME    enable encoder NAME
 146   --disable-encoders       disable all encoders
 147   --disable-decoder=NAME   disable decoder NAME
 148   --enable-decoder=NAME    enable decoder NAME
 149   --disable-decoders       disable all decoders
 150   --disable-hwaccel=NAME   disable hwaccel NAME
 151   --enable-hwaccel=NAME    enable hwaccel NAME
 152   --disable-hwaccels       disable all hwaccels
 153   --disable-muxer=NAME     disable muxer NAME
 154   --enable-muxer=NAME      enable muxer NAME
 155   --disable-muxers         disable all muxers
 156   --disable-demuxer=NAME   disable demuxer NAME
 157   --enable-demuxer=NAME    enable demuxer NAME
 158   --disable-demuxers       disable all demuxers
 159   --enable-parser=NAME     enable parser NAME
 160   --disable-parser=NAME    disable parser NAME
 161   --disable-parsers        disable all parsers
 162   --enable-bsf=NAME        enable bitstream filter NAME
 163   --disable-bsf=NAME       disable bitstream filter NAME
 164   --disable-bsfs           disable all bitstream filters
 165   --enable-protocol=NAME   enable protocol NAME
 166   --disable-protocol=NAME  disable protocol NAME
 167   --disable-protocols      disable all protocols
 168   --enable-indev=NAME      enable input device NAME
 169   --disable-indev=NAME     disable input device NAME
 170   --disable-indevs         disable input devices
 171   --enable-outdev=NAME     enable output device NAME
 172   --disable-outdev=NAME    disable output device NAME
 173   --disable-outdevs        disable output devices
 174   --disable-devices        disable all devices
 175   --enable-filter=NAME     enable filter NAME
 176   --disable-filter=NAME    disable filter NAME
 177   --disable-filters        disable all filters
 178
 179 External library support:
 180   --enable-avisynth        enable reading of AviSynth script files [no]
 181   --enable-bzlib           enable bzlib [autodetect]
 182   --enable-frei0r          enable frei0r video filtering
 183   --enable-gnutls          enable gnutls [no]
 184   --enable-libbs2b         enable bs2b DSP library [no]
 185   --enable-libcdio         enable audio CD grabbing with libcdio
 186   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 187                            and libraw1394 [no]
 188   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 189   --enable-libfaac         enable AAC encoding via libfaac [no]
 190   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 191   --enable-libfreetype     enable libfreetype [no]
 192   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 193   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 194   --enable-libmfx          enable HW acceleration through libmfx
 195   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 196   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 197   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 198   --enable-libopencv       enable video filtering via libopencv [no]
 199   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 200   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 201   --enable-libopus         enable Opus de/encoding via libopus [no]
 202   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 203   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 204   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 205   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 206   --enable-libtheora       enable Theora encoding via libtheora [no]
 207   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 208   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 209   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 210   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
 211   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 212   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 213   --enable-libwebp         enable WebP encoding via libwebp [no]
 214   --enable-libx264         enable H.264 encoding via x264 [no]
 215   --enable-libx265         enable HEVC encoding via x265 [no]
 216   --enable-libxavs         enable AVS encoding via xavs [no]
 217   --enable-libxcb          enable X11 grabbing using XCB [no]
 218   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
 219   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
 220   --enable-libxvid         enable Xvid encoding via xvidcore,
 221                            native MPEG-4/Xvid encoder exists [no]
 222   --enable-mmal            enable decoding via MMAL [no]
 223   --enable-nvenc           enable encoding via NVENC [no]
 224   --enable-openssl         enable openssl [no]
 225   --enable-x11grab         enable X11 grabbing (legacy) [no]
 226   --enable-zlib            enable zlib [autodetect]
 227
 228 Toolchain options:
 229   --arch=ARCH              select architecture [$arch]
 230   --cpu=CPU                select the minimum required CPU (affects
 231                            instruction selection, may crash on older CPUs)
 232   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 233   --enable-cross-compile   assume a cross-compiler is used
 234   --sysroot=PATH           root of cross-build tree
 235   --sysinclude=PATH        location of cross-build system headers
 236   --target-os=OS           compiler targets OS [$target_os]
 237   --target-exec=CMD        command to run executables on target
 238   --target-path=DIR        path to view of build directory on target
 239   --target-samples=DIR     path to samples directory on target
 240   --toolchain=NAME         set tool defaults according to NAME
 241   --nm=NM                  use nm tool
 242   --ar=AR                  use archive tool AR [$ar_default]
 243   --as=AS                  use assembler AS [$as_default]
 244   --cc=CC                  use C compiler CC [$cc_default]
 245   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 246   --ld=LD                  use linker LD
 247   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 248   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 249   --host-cc=HOSTCC         use host C compiler HOSTCC
 250   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 251   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 252   --host-ld=HOSTLD         use host linker HOSTLD
 253   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 254   --host-libs=HLIBS        use libs HLIBS when linking for host
 255   --host-os=OS             compiler host OS [$target_os]
 256   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 257   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 258   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 259   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 260   --extra-version=STRING   version string suffix []
 261   --optflags=OPTFLAGS      override optimization-related compiler flags
 262   --build-suffix=SUFFIX    library name suffix []
 263   --enable-pic             build position-independent code
 264   --enable-thumb           compile for Thumb instruction set
 265   --enable-lto             use link-time optimization
 266
 267 Advanced options (experts only):
 268   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 269   --disable-symver         disable symbol versioning
 270   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 271   --disable-safe-bitstream-reader
 272                            disable buffer boundary checking in bitreaders
 273                            (faster, but may crash)
 274   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 275   --enable-sram            allow use of on-chip SRAM
 276
 277 Optimization options (experts only):
 278   --disable-asm            disable all assembly optimizations
 279   --disable-altivec        disable AltiVec optimizations
 280   --disable-vsx            disable VSX optimizations
 281   --disable-power8         disable POWER8 optimizations
 282   --disable-amd3dnow       disable 3DNow! optimizations
 283   --disable-amd3dnowext    disable 3DNow! extended optimizations
 284   --disable-mmx            disable MMX optimizations
 285   --disable-mmxext         disable MMXEXT optimizations
 286   --disable-sse            disable SSE optimizations
 287   --disable-sse2           disable SSE2 optimizations
 288   --disable-sse3           disable SSE3 optimizations
 289   --disable-ssse3          disable SSSE3 optimizations
 290   --disable-sse4           disable SSE4 optimizations
 291   --disable-sse42          disable SSE4.2 optimizations
 292   --disable-avx            disable AVX optimizations
 293   --disable-xop            disable XOP optimizations
 294   --disable-fma3           disable FMA3 optimizations
 295   --disable-fma4           disable FMA4 optimizations
 296   --disable-avx2           disable AVX2 optimizations
 297   --disable-armv5te        disable armv5te optimizations
 298   --disable-armv6          disable armv6 optimizations
 299   --disable-armv6t2        disable armv6t2 optimizations
 300   --disable-vfp            disable VFP optimizations
 301   --disable-neon           disable NEON optimizations
 302   --disable-inline-asm     disable use of inline assembly
 303   --disable-yasm           disable use of nasm/yasm assembly
 304
 305 Developer options (useful when working on Libav itself):
 306   --disable-debug          disable debugging symbols
 307   --enable-debug=LEVEL     set the debug level [$debuglevel]
 308   --disable-optimizations  disable compiler optimizations
 309   --enable-extra-warnings  enable more compiler warnings
 310   --samples=PATH           location of test samples for FATE, if not set use
 311                            \$LIBAV_SAMPLES at make invocation time.
 312   --enable-neon-clobber-test check NEON registers for clobbering (should be
 313                            used only for debugging purposes)
 314   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 315                            should be used only for debugging purposes)
 316   --enable-random          randomly enable/disable components
 317   --disable-random
 318   --enable-random=LIST     randomly enable/disable specific components or
 319   --disable-random=LIST    component groups. LIST is a comma-separated list
 320                            of NAME[:PROB] entries where NAME is a component
 321                            (group) and PROB the probability associated with
 322                            NAME (default 0.5).
 323   --random-seed=VALUE      seed value for --enable/disable-random
 324   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 325                            (only applies to --disable-optimizations builds)
 326
 327 NOTE: Object files are built at the place where configure is launched.
 328 EOF
 329   exit 0
 330 }
 331
 332 quotes='""'
 333
 334 log(){
 335     echo "$@" >> $logfile
 336 }
 337
 338 log_file(){
 339     log BEGIN $1
 340     pr -n -t $1 >> $logfile
 341     log END $1
 342 }
 343
 344 echolog(){
 345     log "$@"
 346     echo "$@"
 347 }
 348
 349 warn(){
 350     log "WARNING: $*"
 351     WARNINGS="${WARNINGS}WARNING: $*\n"
 352 }
 353
 354 die(){
 355     echolog "$@"
 356     cat <<EOF
 357
 358 If you think configure made a mistake, make sure you are using the latest
 359 version from Git.  If the latest version fails, report the problem to the
 360 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 361 EOF
 362     if disabled logging; then
 363         cat <<EOF
 364 Rerun configure with logging enabled (do not use --disable-logging), and
 365 include the log this produces with your report.
 366 EOF
 367     else
 368         cat <<EOF
 369 Include the log file "$logfile" produced by configure as this will help
 370 solving the problem.
 371 EOF
 372     fi
 373     exit 1
 374 }
 375
 376 # Avoid locale weirdness, besides we really just want to translate ASCII.
 377 toupper(){
 378     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 379 }
 380
 381 tolower(){
 382     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 383 }
 384
 385 c_escape(){
 386     echo "$*" | sed 's/["\\]/\\\0/g'
 387 }
 388
 389 sh_quote(){
 390     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 391     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 392     echo "$v"
 393 }
 394
 395 cleanws(){
 396     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 397 }
 398
 399 filter(){
 400     pat=$1
 401     shift
 402     for v; do
 403         eval "case $v in $pat) echo $v ;; esac"
 404     done
 405 }
 406
 407 filter_out(){
 408     pat=$1
 409     shift
 410     for v; do
 411         eval "case $v in $pat) ;; *) echo $v ;; esac"
 412     done
 413 }
 414
 415 map(){
 416     m=$1
 417     shift
 418     for v; do eval $m; done
 419 }
 420
 421 add_suffix(){
 422     suffix=$1
 423     shift
 424     for v; do echo ${v}${suffix}; done
 425 }
 426
 427 set_all(){
 428     value=$1
 429     shift
 430     for var in $*; do
 431         eval $var=$value
 432     done
 433 }
 434
 435 set_weak(){
 436     value=$1
 437     shift
 438     for var; do
 439         eval : \${$var:=$value}
 440     done
 441 }
 442
 443 sanitize_var_name(){
 444     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 445 }
 446
 447 set_safe(){
 448     var=$1
 449     shift
 450     eval $(sanitize_var_name "$var")='$*'
 451 }
 452
 453 get_safe(){
 454     eval echo \$$(sanitize_var_name "$1")
 455 }
 456
 457 pushvar(){
 458     for pvar in $*; do
 459         eval level=\${${pvar}_level:=0}
 460         eval ${pvar}_${level}="\$$pvar"
 461         eval ${pvar}_level=$(($level+1))
 462     done
 463 }
 464
 465 popvar(){
 466     for pvar in $*; do
 467         eval level=\${${pvar}_level:-0}
 468         test $level = 0 && continue
 469         eval level=$(($level-1))
 470         eval $pvar="\${${pvar}_${level}}"
 471         eval ${pvar}_level=$level
 472         eval unset ${pvar}_${level}
 473     done
 474 }
 475
 476 enable(){
 477     set_all yes $*
 478 }
 479
 480 disable(){
 481     set_all no $*
 482 }
 483
 484 enable_weak(){
 485     set_weak yes $*
 486 }
 487
 488 disable_weak(){
 489     set_weak no $*
 490 }
 491
 492 enable_safe(){
 493     for var; do
 494         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 495     done
 496 }
 497
 498 disable_safe(){
 499     for var; do
 500         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 501     done
 502 }
 503
 504 do_enable_deep(){
 505     for var; do
 506         enabled $var && continue
 507         eval sel="\$${var}_select"
 508         eval sgs="\$${var}_suggest"
 509         pushvar var sgs
 510         enable_deep $sel
 511         popvar sgs
 512         enable_deep_weak $sgs
 513         popvar var
 514     done
 515 }
 516
 517 enable_deep(){
 518     do_enable_deep $*
 519     enable $*
 520 }
 521
 522 enable_deep_weak(){
 523     for var; do
 524         disabled $var && continue
 525         pushvar var
 526         do_enable_deep $var
 527         popvar var
 528         enable_weak $var
 529     done
 530 }
 531
 532 enabled(){
 533     test "${1#!}" = "$1" && op== || op=!=
 534     eval test "x\$${1#!}" $op "xyes"
 535 }
 536
 537 disabled(){
 538     test "${1#!}" = "$1" && op== || op=!=
 539     eval test "x\$${1#!}" $op "xno"
 540 }
 541
 542 enabled_all(){
 543     for opt; do
 544         enabled $opt || return 1
 545     done
 546 }
 547
 548 disabled_all(){
 549     for opt; do
 550         disabled $opt || return 1
 551     done
 552 }
 553
 554 enabled_any(){
 555     for opt; do
 556         enabled $opt && return 0
 557     done
 558 }
 559
 560 disabled_any(){
 561     for opt; do
 562         disabled $opt && return 0
 563     done
 564     return 1
 565 }
 566
 567 set_default(){
 568     for opt; do
 569         eval : \${$opt:=\$${opt}_default}
 570     done
 571 }
 572
 573 is_in(){
 574     value=$1
 575     shift
 576     for var in $*; do
 577         [ $var = $value ] && return 0
 578     done
 579     return 1
 580 }
 581
 582 do_check_deps(){
 583     for cfg; do
 584         cfg="${cfg#!}"
 585         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 586         disabled ${cfg}_checking && continue
 587         enable ${cfg}_checking
 588         append allopts $cfg
 589
 590         eval dep_all="\$${cfg}_deps"
 591         eval dep_any="\$${cfg}_deps_any"
 592         eval dep_sel="\$${cfg}_select"
 593         eval dep_sgs="\$${cfg}_suggest"
 594         eval dep_ifa="\$${cfg}_if"
 595         eval dep_ifn="\$${cfg}_if_any"
 596
 597         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 598         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 599         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 600
 601         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 602         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 603         enabled_all  $dep_all || disable $cfg
 604         enabled_any  $dep_any || disable $cfg
 605         disabled_any $dep_sel && disable $cfg
 606
 607         if enabled $cfg; then
 608             enable_deep $dep_sel
 609             enable_deep_weak $dep_sgs
 610         fi
 611
 612         disable ${cfg}_checking
 613     done
 614 }
 615
 616 check_deps(){
 617     unset allopts
 618
 619     do_check_deps "$@"
 620
 621     for cfg in $allopts; do
 622         enabled $cfg || continue
 623         eval dep_extralibs="\$${cfg}_extralibs"
 624         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 625     done
 626 }
 627
 628 print_config(){
 629     pfx=$1
 630     files=$2
 631     shift 2
 632     map 'eval echo "$v \${$v:-no}"' "$@" |
 633     awk "BEGIN { split(\"$files\", files) }
 634         {
 635             c = \"$pfx\" toupper(\$1);
 636             v = \$2;
 637             sub(/yes/, 1, v);
 638             sub(/no/,  0, v);
 639             for (f in files) {
 640                 file = files[f];
 641                 if (file ~ /\\.h\$/) {
 642                     printf(\"#define %s %d\\n\", c, v) >>file;
 643                 } else if (file ~ /\\.asm\$/) {
 644                     printf(\"%%define %s %d\\n\", c, v) >>file;
 645                 } else if (file ~ /\\.mak\$/) {
 646                     n = -v ? \"\" : \"!\";
 647                     printf(\"%s%s=yes\\n\", n, c) >>file;
 648                 }
 649             }
 650         }"
 651 }
 652
 653 print_enabled(){
 654     suf=$1
 655     shift
 656     for v; do
 657         enabled $v && printf "%s\n" ${v%$suf};
 658     done
 659 }
 660
 661 append(){
 662     var=$1
 663     shift
 664     eval "$var=\"\$$var $*\""
 665 }
 666
 667 prepend(){
 668     var=$1
 669     shift
 670     eval "$var=\"$* \$$var\""
 671 }
 672
 673 unique(){
 674     var=$1
 675     uniq_list=""
 676     for tok in $(eval echo \$$var); do
 677         uniq_list="$(filter_out $tok $uniq_list) $tok"
 678     done
 679     eval "$var=\"${uniq_list}\""
 680 }
 681
 682 add_cppflags(){
 683     append CPPFLAGS "$@"
 684 }
 685
 686 add_cflags(){
 687     append CFLAGS $($cflags_filter "$@")
 688 }
 689
 690 add_asflags(){
 691     append ASFLAGS $($asflags_filter "$@")
 692 }
 693
 694 add_ldflags(){
 695     append LDFLAGS $($ldflags_filter "$@")
 696 }
 697
 698 add_ldexeflags(){
 699     append LDEXEFLAGS $($ldflags_filter "$@")
 700 }
 701
 702 add_stripflags(){
 703     append STRIPFLAGS "$@"
 704 }
 705
 706 add_extralibs(){
 707     prepend extralibs $($ldflags_filter "$@")
 708 }
 709
 710 add_host_cppflags(){
 711     append host_cppflags "$@"
 712 }
 713
 714 add_host_cflags(){
 715     append host_cflags $($host_cflags_filter "$@")
 716 }
 717
 718 add_host_ldflags(){
 719     append host_ldflags $($host_ldflags_filter "$@")
 720 }
 721
 722 add_compat(){
 723     append compat_objs $1
 724     shift
 725     map 'add_cppflags -D$v' "$@"
 726 }
 727
 728 check_cmd(){
 729     log "$@"
 730     "$@" >> $logfile 2>&1
 731 }
 732
 733 cc_o(){
 734     eval printf '%s\\n' $CC_O
 735 }
 736
 737 cc_e(){
 738     eval printf '%s\\n' $CC_E
 739 }
 740
 741 check_cc(){
 742     log check_cc "$@"
 743     cat > $TMPC
 744     log_file $TMPC
 745     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 746 }
 747
 748 check_cpp(){
 749     log check_cpp "$@"
 750     cat > $TMPC
 751     log_file $TMPC
 752     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 753 }
 754
 755 as_o(){
 756     eval printf '%s\\n' $AS_O
 757 }
 758
 759 check_as(){
 760     log check_as "$@"
 761     cat > $TMPS
 762     log_file $TMPS
 763     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 764 }
 765
 766 check_inline_asm(){
 767     log check_inline_asm "$@"
 768     name="$1"
 769     code="$2"
 770     shift 2
 771     disable $name
 772     check_cc "$@" <<EOF && enable $name
 773 void foo(void){ __asm__ volatile($code); }
 774 EOF
 775 }
 776
 777 check_insn(){
 778     log check_insn "$@"
 779     check_inline_asm ${1}_inline "\"$2\""
 780     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 781 }
 782
 783 check_yasm(){
 784     log check_yasm "$@"
 785     echo "$1" > $TMPS
 786     log_file $TMPS
 787     shift 1
 788     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 789 }
 790
 791 ld_o(){
 792     eval printf '%s\\n' $LD_O
 793 }
 794
 795 check_ld(){
 796     log check_ld "$@"
 797     flags=$(filter_out '-l*' "$@")
 798     libs=$(filter '-l*' "$@")
 799     check_cc $($cflags_filter $flags) || return
 800     flags=$($ldflags_filter $flags)
 801     libs=$($ldflags_filter $libs)
 802     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 803 }
 804
 805 print_include(){
 806     hdr=$1
 807     test "${hdr%.h}" = "${hdr}" &&
 808         echo "#include $hdr"    ||
 809         echo "#include <$hdr>"
 810 }
 811
 812 check_code(){
 813     log check_code "$@"
 814     check=$1
 815     headers=$2
 816     code=$3
 817     shift 3
 818     {
 819         for hdr in $headers; do
 820             print_include $hdr
 821         done
 822         echo "int main(void) { $code; return 0; }"
 823     } | check_$check "$@"
 824 }
 825
 826 check_cppflags(){
 827     log check_cppflags "$@"
 828     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 829 int x;
 830 EOF
 831 }
 832
 833 test_cflags(){
 834     log test_cflags "$@"
 835     set -- $($cflags_filter "$@")
 836     check_cc "$@" <<EOF
 837 int x;
 838 EOF
 839 }
 840
 841 check_cflags(){
 842     log check_cflags "$@"
 843     test_cflags "$@" && add_cflags "$@"
 844 }
 845
 846 test_ldflags(){
 847     log test_ldflags "$@"
 848     check_ld "$@" <<EOF
 849 int main(void){ return 0; }
 850 EOF
 851 }
 852
 853 check_ldflags(){
 854     log check_ldflags "$@"
 855     test_ldflags "$@" && add_ldflags "$@"
 856 }
 857
 858 test_stripflags(){
 859     log test_stripflags "$@"
 860     # call check_cc to get a fresh TMPO
 861     check_cc <<EOF
 862 int main(void) { return 0; }
 863 EOF
 864     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 865 }
 866
 867 check_stripflags(){
 868     log check_stripflags "$@"
 869     test_stripflags "$@" && add_stripflags "$@"
 870 }
 871
 872 check_header(){
 873     log check_header "$@"
 874     header=$1
 875     shift
 876     disable_safe $header
 877     check_cpp "$@" <<EOF && enable_safe $header
 878 #include <$header>
 879 int x;
 880 EOF
 881 }
 882
 883 check_func(){
 884     log check_func "$@"
 885     func=$1
 886     shift
 887     disable $func
 888     check_ld "$@" <<EOF && enable $func
 889 extern int $func();
 890 int main(void){ $func(); }
 891 EOF
 892 }
 893
 894 check_mathfunc(){
 895     log check_mathfunc "$@"
 896     func=$1
 897     narg=$2
 898     shift 2
 899     test $narg = 2 && args="f, g" || args="f"
 900     disable $func
 901     check_ld "$@" <<EOF && enable $func
 902 #include <math.h>
 903 float foo(float f, float g) { return $func($args); }
 904 int main(void){ return 0; }
 905 EOF
 906 }
 907
 908 check_func_headers(){
 909     log check_func_headers "$@"
 910     headers=$1
 911     funcs=$2
 912     shift 2
 913     {
 914         for hdr in $headers; do
 915             print_include $hdr
 916         done
 917         for func in $funcs; do
 918             echo "long check_$func(void) { return (long) $func; }"
 919         done
 920         echo "int main(void) { return 0; }"
 921     } | check_ld "$@" && enable $funcs && enable_safe $headers
 922 }
 923
 924 check_cpp_condition(){
 925     log check_cpp_condition "$@"
 926     header=$1
 927     condition=$2
 928     shift 2
 929     check_cpp "$@" <<EOF
 930 #include <$header>
 931 #if !($condition)
 932 #error "unsatisfied condition: $condition"
 933 #endif
 934 EOF
 935 }
 936
 937 check_lib(){
 938     log check_lib "$@"
 939     header="$1"
 940     func="$2"
 941     shift 2
 942     check_header $header && check_func $func "$@" && add_extralibs "$@"
 943 }
 944
 945 check_lib2(){
 946     log check_lib2 "$@"
 947     headers="$1"
 948     funcs="$2"
 949     shift 2
 950     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 951 }
 952
 953 check_pkg_config(){
 954     log check_pkg_config "$@"
 955     pkg="$1"
 956     headers="$2"
 957     funcs="$3"
 958     shift 3
 959     check_cmd $pkg_config --exists --print-errors $pkg || return
 960     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
 961     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
 962     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 963         set_safe ${pkg}_cflags $pkg_cflags   &&
 964         set_safe ${pkg}_libs   $pkg_libs
 965 }
 966
 967 check_exec(){
 968     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 969 }
 970
 971 check_exec_crash(){
 972     code=$(cat)
 973
 974     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 975     # are safe but may not be available everywhere.  Thus we use
 976     # raise(SIGTERM) instead.  The check is run in a subshell so we
 977     # can redirect the "Terminated" message from the shell.  SIGBUS
 978     # is not defined by standard C so it is used conditionally.
 979
 980     (check_exec "$@") >> $logfile 2>&1 <<EOF
 981 #include <signal.h>
 982 static void sighandler(int sig){
 983     raise(SIGTERM);
 984 }
 985 int foo(void){
 986     $code
 987 }
 988 int (*func_ptr)(void) = foo;
 989 int main(void){
 990     signal(SIGILL, sighandler);
 991     signal(SIGFPE, sighandler);
 992     signal(SIGSEGV, sighandler);
 993 #ifdef SIGBUS
 994     signal(SIGBUS, sighandler);
 995 #endif
 996     return func_ptr();
 997 }
 998 EOF
 999 }
1000
1001 check_type(){
1002     log check_type "$@"
1003     headers=$1
1004     type=$2
1005     shift 2
1006     disable_safe "$type"
1007     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1008 }
1009
1010 check_struct(){
1011     log check_struct "$@"
1012     headers=$1
1013     struct=$2
1014     member=$3
1015     shift 3
1016     disable_safe "${struct}_${member}"
1017     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1018         enable_safe "${struct}_${member}"
1019 }
1020
1021 check_builtin(){
1022     log check_builtin "$@"
1023     name=$1
1024     headers=$2
1025     builtin=$3
1026     shift 3
1027     disable "$name"
1028     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1029 }
1030
1031 check_compile_assert(){
1032     log check_compile_assert "$@"
1033     name=$1
1034     headers=$2
1035     condition=$3
1036     shift 3
1037     disable "$name"
1038     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1039 }
1040
1041 require(){
1042     name="$1"
1043     header="$2"
1044     func="$3"
1045     shift 3
1046     check_lib $header $func "$@" || die "ERROR: $name not found"
1047 }
1048
1049 require2(){
1050     name="$1"
1051     headers="$2"
1052     func="$3"
1053     shift 3
1054     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1055 }
1056
1057 require_pkg_config(){
1058     pkg="$1"
1059     check_pkg_config "$@" || die "ERROR: $pkg not found"
1060     add_cflags    $(get_safe ${pkg}_cflags)
1061     add_extralibs $(get_safe ${pkg}_libs)
1062 }
1063
1064 hostcc_e(){
1065     eval printf '%s\\n' $HOSTCC_E
1066 }
1067
1068 hostcc_o(){
1069     eval printf '%s\\n' $HOSTCC_O
1070 }
1071
1072 check_host_cc(){
1073     log check_host_cc "$@"
1074     cat > $TMPC
1075     log_file $TMPC
1076     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1077 }
1078
1079 check_host_cpp(){
1080     log check_host_cpp "$@"
1081     cat > $TMPC
1082     log_file $TMPC
1083     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1084 }
1085
1086 check_host_cppflags(){
1087     log check_host_cppflags "$@"
1088     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1089 int x;
1090 EOF
1091 }
1092
1093 check_host_cflags(){
1094     log check_host_cflags "$@"
1095     set -- $($host_cflags_filter "$@")
1096     check_host_cc "$@" <<EOF && append host_cflags "$@"
1097 int x;
1098 EOF
1099 }
1100
1101 check_host_cpp_condition(){
1102     log check_host_cpp_condition "$@"
1103     header=$1
1104     condition=$2
1105     shift 2
1106     check_host_cpp "$@" <<EOF
1107 #include <$header>
1108 #if !($condition)
1109 #error "unsatisfied condition: $condition"
1110 #endif
1111 EOF
1112 }
1113
1114 apply(){
1115     file=$1
1116     shift
1117     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1118 }
1119
1120 cp_if_changed(){
1121     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1122     mkdir -p "$(dirname $2)"
1123     $cp_f "$1" "$2"
1124 }
1125
1126 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1127 # system-dependent things.
1128
1129 COMPONENT_LIST="
1130     bsfs
1131     decoders
1132     demuxers
1133     encoders
1134     filters
1135     hwaccels
1136     indevs
1137     muxers
1138     outdevs
1139     parsers
1140     protocols
1141 "
1142
1143 EXAMPLE_LIST="
1144     avcodec_example
1145     filter_audio_example
1146     metadata_example
1147     output_example
1148     qsvdec_example
1149     transcode_aac_example
1150 "
1151
1152 EXTERNAL_LIBRARY_LIST="
1153     avisynth
1154     bzlib
1155     frei0r
1156     gnutls
1157     libbs2b
1158     libcdio
1159     libdc1394
1160     libdcadec
1161     libfaac
1162     libfdk_aac
1163     libfontconfig
1164     libfreetype
1165     libgsm
1166     libilbc
1167     libmfx
1168     libmp3lame
1169     libopencore_amrnb
1170     libopencore_amrwb
1171     libopencv
1172     libopenh264
1173     libopenjpeg
1174     libopus
1175     libpulse
1176     librtmp
1177     libschroedinger
1178     libspeex
1179     libtheora
1180     libtwolame
1181     libvo_aacenc
1182     libvo_amrwbenc
1183     libvorbis
1184     libvpx
1185     libwavpack
1186     libwebp
1187     libx264
1188     libx265
1189     libxavs
1190     libxcb
1191     libxcb_shm
1192     libxcb_xfixes
1193     libxvid
1194     mmal
1195     nvenc
1196     openssl
1197     x11grab
1198     zlib
1199 "
1200
1201 FEATURE_LIST="
1202     gray
1203     hardcoded_tables
1204     runtime_cpudetect
1205     safe_bitstream_reader
1206     shared
1207     small
1208     sram
1209     static
1210     swscale_alpha
1211 "
1212
1213 HWACCEL_LIST="
1214     d3d11va
1215     dxva2
1216     vaapi
1217     vda
1218     vdpau
1219 "
1220
1221 LIBRARY_LIST="
1222     avcodec
1223     avdevice
1224     avfilter
1225     avformat
1226     avresample
1227     avutil
1228     swscale
1229 "
1230
1231 LICENSE_LIST="
1232     gpl
1233     nonfree
1234     version3
1235 "
1236
1237 PROGRAM_LIST="
1238     avconv
1239     avplay
1240     avprobe
1241 "
1242
1243 SUBSYSTEM_LIST="
1244     dct
1245     doc
1246     error_resilience
1247     faan
1248     fft
1249     lsp
1250     lzo
1251     mdct
1252     network
1253     rdft
1254 "
1255
1256 CONFIG_LIST="
1257     $COMPONENT_LIST
1258     $EXAMPLE_LIST
1259     $EXTERNAL_LIBRARY_LIST
1260     $FEATURE_LIST
1261     $HWACCEL_LIST
1262     $LICENSE_LIST
1263     $LIBRARY_LIST
1264     $PROGRAM_LIST
1265     $SUBSYSTEM_LIST
1266     memalign_hack
1267     neon_clobber_test
1268     pic
1269     pod2man
1270     texi2html
1271     thumb
1272     valgrind_backtrace
1273     xmm_clobber_test
1274 "
1275
1276 THREADS_LIST="
1277     pthreads
1278     w32threads
1279 "
1280
1281 ATOMICS_LIST="
1282     atomics_gcc
1283     atomics_suncc
1284     atomics_win32
1285 "
1286
1287 ARCH_LIST="
1288     aarch64
1289     alpha
1290     arm
1291     avr32
1292     avr32_ap
1293     avr32_uc
1294     bfin
1295     ia64
1296     m68k
1297     mips
1298     mips64
1299     parisc
1300     ppc
1301     ppc64
1302     s390
1303     sh4
1304     sparc
1305     sparc64
1306     tilegx
1307     tilepro
1308     tomi
1309     x86
1310     x86_32
1311     x86_64
1312 "
1313
1314 ARCH_EXT_LIST_ARM="
1315     armv5te
1316     armv6
1317     armv6t2
1318     armv8
1319     neon
1320     vfp
1321     vfpv3
1322 "
1323
1324 ARCH_EXT_LIST_X86_SIMD="
1325     amd3dnow
1326     amd3dnowext
1327     avx
1328     avx2
1329     fma3
1330     fma4
1331     mmx
1332     mmxext
1333     sse
1334     sse2
1335     sse3
1336     sse4
1337     sse42
1338     ssse3
1339     xop
1340 "
1341
1342 ARCH_EXT_LIST_PPC="
1343     altivec
1344     dcbzl
1345     ldbrx
1346     power8
1347     ppc4xx
1348     vsx
1349 "
1350
1351 ARCH_EXT_LIST_X86="
1352     $ARCH_EXT_LIST_X86_SIMD
1353     cpunop
1354     i686
1355 "
1356
1357 ARCH_EXT_LIST="
1358     $ARCH_EXT_LIST_ARM
1359     $ARCH_EXT_LIST_PPC
1360     $ARCH_EXT_LIST_X86
1361     loongson
1362     vis
1363 "
1364
1365 ARCH_FEATURES="
1366     aligned_stack
1367     fast_64bit
1368     fast_clz
1369     fast_cmov
1370     local_aligned_8
1371     local_aligned_16
1372     simd_align_16
1373 "
1374
1375 BUILTIN_LIST="
1376     atomic_cas_ptr
1377     machine_rw_barrier
1378     MemoryBarrier
1379     mm_empty
1380     rdtsc
1381     sync_val_compare_and_swap
1382 "
1383 HAVE_LIST_CMDLINE="
1384     inline_asm
1385     symver
1386     yasm
1387 "
1388
1389 HAVE_LIST_PUB="
1390     bigendian
1391     fast_unaligned
1392 "
1393
1394 HEADERS_LIST="
1395     alsa_asoundlib_h
1396     altivec_h
1397     arpa_inet_h
1398     cdio_paranoia_h
1399     cdio_paranoia_paranoia_h
1400     dev_bktr_ioctl_bt848_h
1401     dev_bktr_ioctl_meteor_h
1402     dev_ic_bt8xx_h
1403     dev_video_bktr_ioctl_bt848_h
1404     dev_video_meteor_ioctl_meteor_h
1405     direct_h
1406     dlfcn_h
1407     d3d11_h
1408     dxva_h
1409     gsm_h
1410     io_h
1411     mach_mach_time_h
1412     machine_ioctl_bt848_h
1413     machine_ioctl_meteor_h
1414     malloc_h
1415     poll_h
1416     sndio_h
1417     soundcard_h
1418     sys_mman_h
1419     sys_param_h
1420     sys_resource_h
1421     sys_select_h
1422     sys_soundcard_h
1423     sys_time_h
1424     sys_un_h
1425     sys_videoio_h
1426     unistd_h
1427     valgrind_valgrind_h
1428     windows_h
1429     winsock2_h
1430 "
1431
1432 INTRINSICS_LIST="
1433     intrinsics_neon
1434 "
1435
1436 MATH_FUNCS="
1437     atanf
1438     atan2f
1439     cbrtf
1440     cosf
1441     exp2
1442     exp2f
1443     expf
1444     isinf
1445     isnan
1446     ldexpf
1447     llrint
1448     llrintf
1449     log2
1450     log2f
1451     log10f
1452     lrint
1453     lrintf
1454     powf
1455     rint
1456     round
1457     roundf
1458     sinf
1459     trunc
1460     truncf
1461 "
1462
1463 SYSTEM_FUNCS="
1464     aligned_malloc
1465     clock_gettime
1466     closesocket
1467     CommandLineToArgvW
1468     CoTaskMemFree
1469     CryptGenRandom
1470     dlopen
1471     fcntl
1472     flt_lim
1473     fork
1474     getaddrinfo
1475     gethrtime
1476     getopt
1477     GetProcessAffinityMask
1478     GetProcessMemoryInfo
1479     GetProcessTimes
1480     getrusage
1481     getservbyport
1482     GetSystemTimeAsFileTime
1483     gettimeofday
1484     gmtime_r
1485     inet_aton
1486     isatty
1487     jack_port_get_latency_range
1488     LoadLibrary
1489     localtime_r
1490     mach_absolute_time
1491     MapViewOfFile
1492     memalign
1493     mkstemp
1494     mmap
1495     mprotect
1496     nanosleep
1497     posix_memalign
1498     sched_getaffinity
1499     SetConsoleTextAttribute
1500     setmode
1501     setrlimit
1502     Sleep
1503     strerror_r
1504     sysconf
1505     sysctl
1506     usleep
1507     VirtualAlloc
1508 "
1509
1510 TOOLCHAIN_FEATURES="
1511     as_dn_directive
1512     as_func
1513     as_object_arch
1514     asm_mod_q
1515     attribute_may_alias
1516     attribute_packed
1517     ebp_available
1518     ebx_available
1519     gnu_as
1520     ibm_asm
1521     inline_asm_labels
1522     pragma_deprecated
1523     symver_asm_label
1524     symver_gnu_asm
1525     vfp_args
1526     xform_asm
1527     xmm_clobbers
1528 "
1529
1530 TYPES_LIST="
1531     CONDITION_VARIABLE_Ptr
1532     DXVA_PicParams_HEVC
1533     socklen_t
1534     struct_addrinfo
1535     struct_group_source_req
1536     struct_ip_mreq_source
1537     struct_ipv6_mreq
1538     struct_pollfd
1539     struct_rusage_ru_maxrss
1540     struct_sockaddr_in6
1541     struct_sockaddr_sa_len
1542     struct_sockaddr_storage
1543     struct_v4l2_frmivalenum_discrete
1544 "
1545
1546 HAVE_LIST="
1547     $ARCH_EXT_LIST
1548     $(add_suffix _external $ARCH_EXT_LIST)
1549     $(add_suffix _inline   $ARCH_EXT_LIST)
1550     $ARCH_FEATURES
1551     $ATOMICS_LIST
1552     $BUILTIN_LIST
1553     $HAVE_LIST_CMDLINE
1554     $HAVE_LIST_PUB
1555     $HEADERS_LIST
1556     $INTRINSICS_LIST
1557     $MATH_FUNCS
1558     $SYSTEM_FUNCS
1559     $THREADS_LIST
1560     $TOOLCHAIN_FEATURES
1561     $TYPES_LIST
1562     atomics_native
1563     dos_paths
1564     d3d11_cobj
1565     d3d11va_lib
1566     dxva2_lib
1567     libc_msvcrt
1568     libdc1394_1
1569     libdc1394_2
1570     sdl
1571     section_data_rel_ro
1572     threads
1573     vaapi_x11
1574     vdpau_x11
1575     xlib
1576 "
1577
1578 # options emitted with CONFIG_ prefix but not available on the command line
1579 CONFIG_EXTRA="
1580     aandcttables
1581     ac3dsp
1582     audio_frame_queue
1583     audiodsp
1584     blockdsp
1585     bswapdsp
1586     cabac
1587     dvprofile
1588     faandct
1589     faanidct
1590     fdctdsp
1591     fmtconvert
1592     gcrypt
1593     golomb
1594     gplv3
1595     h263dsp
1596     h264chroma
1597     h264dsp
1598     h264pred
1599     h264qpel
1600     hpeldsp
1601     huffman
1602     huffyuvdsp
1603     huffyuvencdsp
1604     idctdsp
1605     iirfilter
1606     imdct15
1607     intrax8
1608     jpegtables
1609     lgplv3
1610     lpc
1611     me_cmp
1612     mpeg_er
1613     mpegaudio
1614     mpegaudiodsp
1615     mpegvideo
1616     mpegvideoenc
1617     nettle
1618     pixblockdsp
1619     qpeldsp
1620     qsv
1621     qsvdec
1622     qsvenc
1623     rangecoder
1624     riffdec
1625     riffenc
1626     rtpdec
1627     rtpenc_chain
1628     sinewin
1629     startcode
1630     tpeldsp
1631     videodsp
1632     vp3dsp
1633     wma_freqs
1634 "
1635
1636 CMDLINE_SELECT="
1637     $ARCH_EXT_LIST
1638     $CONFIG_LIST
1639     $HAVE_LIST_CMDLINE
1640     $THREADS_LIST
1641     asm
1642     cross_compile
1643     debug
1644     extra_warnings
1645     logging
1646     lto
1647     optimizations
1648     rpath
1649 "
1650
1651 PATHS_LIST="
1652     bindir
1653     datadir
1654     docdir
1655     incdir
1656     libdir
1657     mandir
1658     prefix
1659     shlibdir
1660 "
1661
1662 CMDLINE_SET="
1663     $PATHS_LIST
1664     ar
1665     arch
1666     as
1667     build_suffix
1668     cc
1669     cpu
1670     cross_prefix
1671     dep_cc
1672     extra_version
1673     host_cc
1674     host_cflags
1675     host_ld
1676     host_ldflags
1677     host_libs
1678     host_os
1679     ld
1680     logfile
1681     malloc_prefix
1682     nm
1683     optflags
1684     pkg_config
1685     pkg_config_flags
1686     random_seed
1687     samples
1688     sysinclude
1689     sysroot
1690     target_exec
1691     target_os
1692     target_path
1693     target_samples
1694     toolchain
1695 "
1696
1697 CMDLINE_APPEND="
1698     extra_cflags
1699     host_cppflags
1700 "
1701
1702 # code dependency declarations
1703
1704 # architecture extensions
1705
1706 armv5te_deps="arm"
1707 armv6_deps="arm"
1708 armv6t2_deps="arm"
1709 armv8_deps="aarch64"
1710 neon_deps_any="aarch64 arm"
1711 intrinsics_neon_deps="neon"
1712 vfp_deps_any="aarch64 arm"
1713 vfpv3_deps="vfp"
1714
1715 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1716
1717 altivec_deps="ppc"
1718 ppc4xx_deps="ppc"
1719 vsx_deps="altivec"
1720 power8_deps="vsx"
1721
1722 cpunop_deps="i686"
1723 x86_64_select="i686"
1724 x86_64_suggest="fast_cmov"
1725
1726 amd3dnow_deps="mmx"
1727 amd3dnowext_deps="amd3dnow"
1728 i686_deps="x86"
1729 mmx_deps="x86"
1730 mmxext_deps="mmx"
1731 sse_deps="mmxext"
1732 sse2_deps="sse"
1733 sse3_deps="sse2"
1734 ssse3_deps="sse3"
1735 sse4_deps="ssse3"
1736 sse42_deps="sse4"
1737 avx_deps="sse42"
1738 xop_deps="avx"
1739 fma3_deps="avx"
1740 fma4_deps="avx"
1741 avx2_deps="avx"
1742
1743 mmx_external_deps="yasm"
1744 mmx_inline_deps="inline_asm"
1745 mmx_suggest="mmx_external mmx_inline"
1746
1747 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1748     eval dep=\$${ext}_deps
1749     eval ${ext}_external_deps='"${dep}_external"'
1750     eval ${ext}_inline_deps='"${dep}_inline"'
1751     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1752 done
1753
1754 aligned_stack_if_any="aarch64 ppc x86"
1755 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1756 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1757 fast_unaligned_if_any="aarch64 ppc x86"
1758 simd_align_16_if_any="altivec neon sse"
1759
1760 # system capabilities
1761 symver_if_any="symver_asm_label symver_gnu_asm"
1762 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1763
1764 # threading support
1765 atomics_gcc_if="sync_val_compare_and_swap"
1766 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1767 atomics_win32_if="MemoryBarrier"
1768 atomics_native_if_any="$ATOMICS_LIST"
1769 w32threads_deps="atomics_native"
1770 threads_if_any="$THREADS_LIST"
1771
1772 # subsystems
1773 dct_select="rdft"
1774 error_resilience_select="me_cmp"
1775 faandct_deps="faan fdctdsp"
1776 faanidct_deps="faan idctdsp"
1777 intrax8_select="error_resilience"
1778 mdct_select="fft"
1779 rdft_select="fft"
1780 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1781 mpeg_er_select="error_resilience"
1782 mpegaudio_select="mpegaudiodsp"
1783 mpegaudiodsp_select="dct"
1784 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1785 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1786 nvenc_deps_any="dlopen LoadLibrary"
1787 nvenc_extralibs='$ldl'
1788 qsvdec_select="qsv"
1789 qsvenc_select="qsv"
1790
1791 # decoders / encoders
1792 aac_decoder_select="imdct15 mdct sinewin"
1793 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1794 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1795 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1796 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1797 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1798 aic_decoder_select="golomb idctdsp"
1799 alac_encoder_select="lpc"
1800 als_decoder_select="bswapdsp"
1801 amrnb_decoder_select="lsp"
1802 amrwb_decoder_select="lsp"
1803 amv_decoder_select="sp5x_decoder"
1804 ape_decoder_select="bswapdsp"
1805 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1806 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1807 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1808 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1809 atrac1_decoder_select="mdct sinewin"
1810 atrac3_decoder_select="mdct"
1811 atrac3p_decoder_select="mdct sinewin"
1812 bink_decoder_select="blockdsp hpeldsp"
1813 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1814 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1815 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1816 cllc_decoder_select="bswapdsp"
1817 comfortnoise_encoder_select="lpc"
1818 cook_decoder_select="audiodsp mdct sinewin"
1819 cscd_decoder_select="lzo"
1820 cscd_decoder_suggest="zlib"
1821 dca_decoder_select="fmtconvert mdct"
1822 dnxhd_decoder_select="blockdsp idctdsp"
1823 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1824 dvvideo_decoder_select="dvprofile idctdsp"
1825 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1826 dxa_decoder_deps="zlib"
1827 eac3_decoder_select="ac3_decoder"
1828 eac3_encoder_select="ac3_encoder"
1829 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1830 eatgq_decoder_select="aandcttables idctdsp"
1831 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1832 exr_decoder_deps="zlib"
1833 ffv1_decoder_select="golomb rangecoder"
1834 ffv1_encoder_select="rangecoder"
1835 ffvhuff_decoder_select="huffyuv_decoder"
1836 ffvhuff_encoder_select="huffyuv_encoder"
1837 fic_decoder_select="golomb"
1838 flac_decoder_select="golomb"
1839 flac_encoder_select="bswapdsp golomb lpc"
1840 flashsv_decoder_deps="zlib"
1841 flashsv_encoder_deps="zlib"
1842 flashsv2_decoder_deps="zlib"
1843 flv_decoder_select="h263_decoder"
1844 flv_encoder_select="h263_encoder"
1845 fourxm_decoder_select="blockdsp bswapdsp"
1846 fraps_decoder_select="bswapdsp huffman"
1847 g2m_decoder_deps="zlib"
1848 g2m_decoder_select="blockdsp idctdsp jpegtables"
1849 h261_decoder_select="mpeg_er mpegvideo"
1850 h261_encoder_select="aandcttables mpegvideoenc"
1851 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1852 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1853 h263i_decoder_select="h263_decoder"
1854 h263p_encoder_select="h263_encoder"
1855 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1856 h264_decoder_suggest="error_resilience"
1857 h264_nvenc_encoder_deps="nvenc"
1858 h264_qsv_decoder_deps="libmfx"
1859 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1860 h264_qsv_encoder_deps="libmfx"
1861 h264_qsv_encoder_select="qsvenc"
1862 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1863 hevc_nvenc_encoder_deps="nvenc"
1864 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1865 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1866 iac_decoder_select="imc_decoder"
1867 imc_decoder_select="bswapdsp fft mdct sinewin"
1868 indeo3_decoder_select="hpeldsp"
1869 interplay_video_decoder_select="hpeldsp"
1870 jpegls_decoder_select="golomb mjpeg_decoder"
1871 jpegls_encoder_select="golomb"
1872 jv_decoder_select="blockdsp"
1873 lagarith_decoder_select="huffyuvdsp"
1874 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1875 loco_decoder_select="golomb"
1876 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1877 metasound_decoder_select="lsp mdct sinewin"
1878 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1879 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1880 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1881 mjpegb_decoder_select="mjpeg_decoder"
1882 mlp_decoder_select="mlp_parser"
1883 motionpixels_decoder_select="bswapdsp"
1884 mp1_decoder_select="mpegaudio"
1885 mp1float_decoder_select="mpegaudio"
1886 mp2_decoder_select="mpegaudio"
1887 mp2float_decoder_select="mpegaudio"
1888 mp3_decoder_select="mpegaudio"
1889 mp3adu_decoder_select="mpegaudio"
1890 mp3adufloat_decoder_select="mpegaudio"
1891 mp3float_decoder_select="mpegaudio"
1892 mp3on4_decoder_select="mpegaudio"
1893 mp3on4float_decoder_select="mpegaudio"
1894 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1895 mpc8_decoder_select="mpegaudiodsp"
1896 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1897 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1898 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1899 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1900 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1901 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1902 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1903 mpeg4_encoder_select="h263_encoder"
1904 msmpeg4v1_decoder_select="h263_decoder"
1905 msmpeg4v2_decoder_select="h263_decoder"
1906 msmpeg4v2_encoder_select="h263_encoder"
1907 msmpeg4v3_decoder_select="h263_decoder"
1908 msmpeg4v3_encoder_select="h263_encoder"
1909 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1910 mxpeg_decoder_select="mjpeg_decoder"
1911 nellymoser_decoder_select="mdct sinewin"
1912 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1913 nuv_decoder_select="idctdsp lzo"
1914 on2avc_decoder_select="mdct"
1915 opus_decoder_deps="avresample"
1916 opus_decoder_select="imdct15"
1917 png_decoder_deps="zlib"
1918 png_encoder_deps="zlib"
1919 png_encoder_select="huffyuvencdsp"
1920 prores_decoder_select="idctdsp"
1921 prores_encoder_select="fdctdsp"
1922 qcelp_decoder_select="lsp"
1923 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1924 ra_144_encoder_select="audio_frame_queue lpc"
1925 ralf_decoder_select="golomb"
1926 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1927 rv10_encoder_select="h263_encoder"
1928 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1929 rv20_encoder_select="h263_encoder"
1930 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1931 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1932 shorten_decoder_select="golomb"
1933 sipr_decoder_select="lsp"
1934 sp5x_decoder_select="mjpeg_decoder"
1935 svq1_decoder_select="hpeldsp"
1936 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1937 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1938 svq3_decoder_suggest="zlib"
1939 tak_decoder_select="audiodsp"
1940 tdsc_decoder_deps="zlib"
1941 tdsc_decoder_select="mjpeg_decoder"
1942 theora_decoder_select="vp3_decoder"
1943 thp_decoder_select="mjpeg_decoder"
1944 tiff_decoder_suggest="zlib"
1945 tiff_encoder_suggest="zlib"
1946 truehd_decoder_select="mlp_decoder"
1947 truemotion2_decoder_select="bswapdsp"
1948 truespeech_decoder_select="bswapdsp"
1949 tscc_decoder_deps="zlib"
1950 twinvq_decoder_select="mdct lsp sinewin"
1951 utvideo_decoder_select="bswapdsp"
1952 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1953 vble_decoder_select="huffyuvdsp"
1954 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1955 vc1image_decoder_select="vc1_decoder"
1956 vorbis_decoder_select="mdct"
1957 vorbis_encoder_select="mdct"
1958 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1959 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1960 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1961 vp6a_decoder_select="vp6_decoder"
1962 vp6f_decoder_select="vp6_decoder"
1963 vp7_decoder_select="h264pred videodsp"
1964 vp8_decoder_select="h264pred videodsp"
1965 vp9_decoder_select="videodsp"
1966 webp_decoder_select="vp8_decoder"
1967 wmapro_decoder_select="mdct sinewin wma_freqs"
1968 wmav1_decoder_select="mdct sinewin wma_freqs"
1969 wmav1_encoder_select="mdct sinewin wma_freqs"
1970 wmav2_decoder_select="mdct sinewin wma_freqs"
1971 wmav2_encoder_select="mdct sinewin wma_freqs"
1972 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1973 wmv1_decoder_select="h263_decoder"
1974 wmv1_encoder_select="h263_encoder"
1975 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1976 wmv2_encoder_select="h263_encoder"
1977 wmv3_decoder_select="vc1_decoder"
1978 wmv3image_decoder_select="wmv3_decoder"
1979 zerocodec_decoder_deps="zlib"
1980 zlib_decoder_deps="zlib"
1981 zlib_encoder_deps="zlib"
1982 zmbv_decoder_deps="zlib"
1983 zmbv_encoder_deps="zlib"
1984
1985 # hardware accelerators
1986 d3d11va_deps="d3d11_h dxva_h"
1987 dxva2_deps="dxva2api_h"
1988 vaapi_deps="va_va_h"
1989 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1990 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1991 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1992
1993 h263_vaapi_hwaccel_deps="vaapi"
1994 h263_vaapi_hwaccel_select="h263_decoder"
1995 h263_vdpau_hwaccel_deps="vdpau"
1996 h263_vdpau_hwaccel_select="h263_decoder"
1997 h264_d3d11va_hwaccel_deps="d3d11va"
1998 h264_d3d11va_hwaccel_select="h264_decoder"
1999 h264_dxva2_hwaccel_deps="dxva2"
2000 h264_dxva2_hwaccel_select="h264_decoder"
2001 h264_mmal_decoder_deps="mmal"
2002 h264_mmal_hwaccel_deps="mmal"
2003 h264_mmal_decoder_select="h264_decoder"
2004 h264_mmal_encoder_deps="mmal"
2005 h264_qsv_hwaccel_deps="libmfx"
2006 h264_vaapi_hwaccel_deps="vaapi"
2007 h264_vaapi_hwaccel_select="h264_decoder"
2008 h264_vda_hwaccel_deps="vda"
2009 h264_vda_hwaccel_select="h264_decoder"
2010 h264_vda_old_hwaccel_deps="vda"
2011 h264_vda_old_hwaccel_select="h264_decoder"
2012 h264_vdpau_hwaccel_deps="vdpau"
2013 h264_vdpau_hwaccel_select="h264_decoder"
2014 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2015 hevc_d3d11va_hwaccel_select="hevc_decoder"
2016 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2017 hevc_dxva2_hwaccel_select="hevc_decoder"
2018 mpeg1_vdpau_hwaccel_deps="vdpau"
2019 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2020 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2021 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2022 mpeg2_dxva2_hwaccel_deps="dxva2"
2023 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2024 mpeg2_vaapi_hwaccel_deps="vaapi"
2025 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2026 mpeg2_vdpau_hwaccel_deps="vdpau"
2027 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2028 mpeg4_vaapi_hwaccel_deps="vaapi"
2029 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2030 mpeg4_vdpau_hwaccel_deps="vdpau"
2031 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2032 vc1_d3d11va_hwaccel_deps="d3d11va"
2033 vc1_d3d11va_hwaccel_select="vc1_decoder"
2034 vc1_dxva2_hwaccel_deps="dxva2"
2035 vc1_dxva2_hwaccel_select="vc1_decoder"
2036 vc1_vaapi_hwaccel_deps="vaapi"
2037 vc1_vaapi_hwaccel_select="vc1_decoder"
2038 vc1_vdpau_hwaccel_deps="vdpau"
2039 vc1_vdpau_hwaccel_select="vc1_decoder"
2040 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2041 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2042 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2043 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2044
2045 # parsers
2046 h264_parser_select="h264_decoder"
2047 mpegvideo_parser_select="mpegvideo"
2048 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2049 vc1_parser_select="mpegvideo startcode vc1_decoder"
2050
2051 # bitstream_filters
2052 mjpeg2jpeg_bsf_select="jpegtables"
2053
2054 # external libraries
2055 libdcadec_decoder_deps="libdcadec"
2056 libfaac_encoder_deps="libfaac"
2057 libfaac_encoder_select="audio_frame_queue"
2058 libfdk_aac_decoder_deps="libfdk_aac"
2059 libfdk_aac_encoder_deps="libfdk_aac"
2060 libfdk_aac_encoder_select="audio_frame_queue"
2061 libgsm_decoder_deps="libgsm"
2062 libgsm_encoder_deps="libgsm"
2063 libgsm_ms_decoder_deps="libgsm"
2064 libgsm_ms_encoder_deps="libgsm"
2065 libilbc_decoder_deps="libilbc"
2066 libilbc_encoder_deps="libilbc"
2067 libmp3lame_encoder_deps="libmp3lame"
2068 libmp3lame_encoder_select="audio_frame_queue"
2069 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2070 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2071 libopencore_amrnb_encoder_select="audio_frame_queue"
2072 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2073 libopenh264_encoder_deps="libopenh264"
2074 libopenjpeg_decoder_deps="libopenjpeg"
2075 libopenjpeg_encoder_deps="libopenjpeg"
2076 libopus_decoder_deps="libopus"
2077 libopus_encoder_deps="libopus"
2078 libopus_encoder_select="audio_frame_queue"
2079 libschroedinger_decoder_deps="libschroedinger"
2080 libschroedinger_encoder_deps="libschroedinger"
2081 libspeex_decoder_deps="libspeex"
2082 libspeex_encoder_deps="libspeex"
2083 libspeex_encoder_select="audio_frame_queue"
2084 libtheora_encoder_deps="libtheora"
2085 libtwolame_encoder_deps="libtwolame"
2086 libvo_aacenc_encoder_deps="libvo_aacenc"
2087 libvo_aacenc_encoder_select="audio_frame_queue"
2088 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2089 libvorbis_encoder_deps="libvorbis"
2090 libvorbis_encoder_select="audio_frame_queue"
2091 libvpx_vp8_decoder_deps="libvpx"
2092 libvpx_vp8_encoder_deps="libvpx"
2093 libvpx_vp9_decoder_deps="libvpx"
2094 libvpx_vp9_encoder_deps="libvpx"
2095 libwavpack_encoder_deps="libwavpack"
2096 libwebp_encoder_deps="libwebp"
2097 libx264_encoder_deps="libx264"
2098 libx265_encoder_deps="libx265"
2099 libxavs_encoder_deps="libxavs"
2100 libxvid_encoder_deps="libxvid"
2101
2102 # demuxers / muxers
2103 ac3_demuxer_select="ac3_parser"
2104 asf_demuxer_select="riffdec"
2105 asf_muxer_select="riffenc"
2106 asf_stream_muxer_select="asf_muxer"
2107 avi_demuxer_select="riffdec"
2108 avi_muxer_select="riffenc"
2109 avisynth_demuxer_deps="avisynth"
2110 avisynth_demuxer_select="riffdec"
2111 caf_demuxer_select="riffdec"
2112 dash_muxer_select="mp4_muxer"
2113 dirac_demuxer_select="dirac_parser"
2114 dv_demuxer_select="dvprofile"
2115 dv_muxer_select="dvprofile"
2116 dxa_demuxer_select="riffdec"
2117 eac3_demuxer_select="ac3_parser"
2118 f4v_muxer_select="mov_muxer"
2119 flac_demuxer_select="flac_parser"
2120 hds_muxer_select="flv_muxer"
2121 hls_muxer_select="mpegts_muxer"
2122 ipod_muxer_select="mov_muxer"
2123 ismv_muxer_select="mov_muxer"
2124 matroska_audio_muxer_select="matroska_muxer"
2125 matroska_demuxer_select="riffdec"
2126 matroska_demuxer_suggest="bzlib lzo zlib"
2127 matroska_muxer_select="riffenc"
2128 mmf_muxer_select="riffenc"
2129 mov_demuxer_select="riffdec"
2130 mov_demuxer_suggest="zlib"
2131 mov_muxer_select="riffenc rtpenc_chain"
2132 mp3_demuxer_select="mpegaudio_parser"
2133 mp4_muxer_select="mov_muxer"
2134 mpegts_muxer_select="adts_muxer latm_muxer"
2135 mpegtsraw_demuxer_select="mpegts_demuxer"
2136 mxf_d10_muxer_select="mxf_muxer"
2137 nut_muxer_select="riffenc"
2138 nuv_demuxer_select="riffdec"
2139 oga_muxer_select="ogg_muxer"
2140 ogg_demuxer_select="golomb"
2141 opus_muxer_select="ogg_muxer"
2142 psp_muxer_select="mov_muxer"
2143 rtp_demuxer_select="sdp_demuxer"
2144 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2145 rtsp_demuxer_select="http_protocol rtpdec"
2146 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2147 sap_demuxer_select="sdp_demuxer"
2148 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2149 sdp_demuxer_select="rtpdec"
2150 smoothstreaming_muxer_select="ismv_muxer"
2151 spdif_muxer_select="aac_parser"
2152 spx_muxer_select="ogg_muxer"
2153 tak_demuxer_select="tak_parser"
2154 tg2_muxer_select="mov_muxer"
2155 tgp_muxer_select="mov_muxer"
2156 w64_demuxer_select="wav_demuxer"
2157 wav_demuxer_select="riffdec"
2158 wav_muxer_select="riffenc"
2159 webm_muxer_select="riffenc"
2160 wtv_demuxer_select="riffdec"
2161 xmv_demuxer_select="riffdec"
2162 xwma_demuxer_select="riffdec"
2163
2164 # indevs / outdevs
2165 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2166 alsa_outdev_deps="alsa_asoundlib_h"
2167 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2168 dv1394_indev_deps="dv1394"
2169 dv1394_indev_select="dv_demuxer"
2170 fbdev_indev_deps="linux_fb_h"
2171 jack_indev_deps="jack_jack_h pthreads"
2172 libcdio_indev_deps="libcdio"
2173 libdc1394_indev_deps="libdc1394"
2174 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2175 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2176 pulse_indev_deps="libpulse"
2177 sndio_indev_deps="sndio_h"
2178 sndio_outdev_deps="sndio_h"
2179 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2180 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2181 vfwcap_indev_extralibs="-lavicap32"
2182 x11grab_indev_deps="x11grab"
2183 x11grab_xcb_indev_deps="libxcb"
2184
2185 # protocols
2186 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2187 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2188 ffrtmpcrypt_protocol_select="tcp_protocol"
2189 ffrtmphttp_protocol_deps="!librtmp_protocol"
2190 ffrtmphttp_protocol_select="http_protocol"
2191 gopher_protocol_select="network"
2192 http_protocol_select="tcp_protocol"
2193 httpproxy_protocol_select="tcp_protocol"
2194 https_protocol_select="tls_protocol"
2195 icecast_protocol_select="http_protocol"
2196 librtmp_protocol_deps="librtmp"
2197 librtmpe_protocol_deps="librtmp"
2198 librtmps_protocol_deps="librtmp"
2199 librtmpt_protocol_deps="librtmp"
2200 librtmpte_protocol_deps="librtmp"
2201 mmsh_protocol_select="http_protocol"
2202 mmst_protocol_select="network"
2203 rtmp_protocol_deps="!librtmp_protocol"
2204 rtmp_protocol_select="tcp_protocol"
2205 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2206 rtmps_protocol_deps="!librtmp_protocol"
2207 rtmps_protocol_select="tls_protocol"
2208 rtmpt_protocol_select="ffrtmphttp_protocol"
2209 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2210 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2211 rtp_protocol_select="udp_protocol"
2212 sctp_protocol_deps="struct_sctp_event_subscribe"
2213 sctp_protocol_select="network"
2214 srtp_protocol_select="rtp_protocol"
2215 tcp_protocol_select="network"
2216 tls_gnutls_protocol_deps="gnutls"
2217 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2218 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2219 tls_protocol_select="tcp_protocol"
2220 udp_protocol_select="network"
2221 unix_protocol_deps="sys_un_h"
2222 unix_protocol_select="network"
2223
2224 # filters
2225 blackframe_filter_deps="gpl"
2226 boxblur_filter_deps="gpl"
2227 bs2b_filter_deps="libbs2b"
2228 cropdetect_filter_deps="gpl"
2229 delogo_filter_deps="gpl"
2230 drawtext_filter_deps="libfreetype"
2231 frei0r_filter_deps="frei0r dlopen"
2232 frei0r_filter_extralibs='$ldl'
2233 frei0r_src_filter_deps="frei0r dlopen"
2234 frei0r_src_filter_extralibs='$ldl'
2235 hqdn3d_filter_deps="gpl"
2236 interlace_filter_deps="gpl"
2237 ocv_filter_deps="libopencv"
2238 resample_filter_deps="avresample"
2239 scale_filter_deps="swscale"
2240
2241 # examples
2242 avcodec_example_deps="avcodec avutil"
2243 filter_audio_example_deps="avfilter avutil"
2244 metadata_example_deps="avformat avutil"
2245 output_example_deps="avcodec avformat avutil swscale"
2246 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2247 transcode_aac_example_deps="avcodec avformat avresample"
2248
2249 # libraries, in linking order
2250 avcodec_deps="avutil"
2251 avdevice_deps="avformat avcodec avutil"
2252 avfilter_deps="avutil"
2253 avformat_deps="avcodec avutil"
2254 avresample_deps="avutil"
2255 swscale_deps="avutil"
2256
2257 # programs
2258 avconv_deps="avcodec avfilter avformat avresample swscale"
2259 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2260                fps_filter null_filter resample_filter scale_filter
2261                setpts_filter trim_filter"
2262 avplay_deps="avcodec avformat avresample swscale sdl"
2263 avplay_libs='$sdl_libs'
2264 avplay_select="rdft transpose_filter hflip_filter vflip_filter"
2265 avprobe_deps="avcodec avformat"
2266
2267 # documentation
2268 pod2man_deps="doc"
2269 texi2html_deps="doc"
2270
2271 # default parameters
2272
2273 logfile="config.log"
2274
2275 # installation paths
2276 prefix_default="/usr/local"
2277 bindir_default='${prefix}/bin'
2278 datadir_default='${prefix}/share/avconv'
2279 docdir_default='${prefix}/share/doc/libav'
2280 incdir_default='${prefix}/include'
2281 libdir_default='${prefix}/lib'
2282 mandir_default='${prefix}/share/man'
2283 shlibdir_default="$libdir_default"
2284
2285 # toolchain
2286 ar_default="ar"
2287 cc_default="gcc"
2288 host_cc_default="gcc"
2289 cp_f="cp -f"
2290 ln_s="ln -s -f"
2291 nm_default="nm -g"
2292 objformat="elf"
2293 pkg_config_default=pkg-config
2294 ranlib="ranlib"
2295 strip="strip"
2296 yasmexe="yasm"
2297
2298 # machine
2299 arch_default=$(uname -m)
2300 cpu="generic"
2301 intrinsics="none"
2302
2303 # OS
2304 target_os_default=$(tolower $(uname -s))
2305 host_os=$target_os_default
2306
2307 # configurable options
2308 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2309
2310 enable asm
2311 enable debug
2312 enable doc
2313 enable faan faandct faanidct
2314 enable optimizations
2315 enable safe_bitstream_reader
2316 enable static
2317 enable swscale_alpha
2318 enable valgrind_backtrace
2319
2320 # By default, enable only those hwaccels that have no external dependencies.
2321 enable d3d11va dxva2 vda vdpau
2322
2323 # build settings
2324 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2325 LIBPREF="lib"
2326 LIBSUF=".a"
2327 FULLNAME='$(NAME)$(BUILDSUF)'
2328 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2329 SLIBPREF="lib"
2330 SLIBSUF=".so"
2331 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2332 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2333 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2334 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2335 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2336 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2337
2338 asflags_filter=echo
2339 cflags_filter=echo
2340 ldflags_filter=echo
2341
2342 AS_C='-c'
2343 AS_O='-o $@'
2344 CC_C='-c'
2345 CC_E='-E -o $@'
2346 CC_O='-o $@'
2347 LD_O='-o $@'
2348 LD_LIB='-l%'
2349 LD_PATH='-L'
2350 HOSTCC_C='-c'
2351 HOSTCC_E='-E -o $@'
2352 HOSTCC_O='-o $@'
2353 HOSTLD_O='-o $@'
2354
2355 host_libs='-lm'
2356 host_cflags_filter=echo
2357 host_ldflags_filter=echo
2358
2359 target_path='$(CURDIR)'
2360
2361 # since the object filename is not given with the -MM flag, the compiler
2362 # is only able to print the basename, and we must add the path ourselves
2363 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2364 DEPFLAGS='-MM'
2365
2366 # find source path
2367 if test -f configure; then
2368     source_path=.
2369 else
2370     source_path=$(cd $(dirname "$0"); pwd)
2371     echo "$source_path" | grep -q '[[:blank:]]' &&
2372         die "Out of tree builds are impossible with whitespace in source path."
2373     test -e "$source_path/config.h" &&
2374         die "Out of tree builds are impossible with config.h in source dir."
2375 fi
2376
2377 for v in "$@"; do
2378     r=${v#*=}
2379     l=${v%"$r"}
2380     r=$(sh_quote "$r")
2381     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2382 done
2383
2384 find_things(){
2385     thing=$1
2386     pattern=$2
2387     file=$source_path/$3
2388     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2389 }
2390
2391 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2392 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2393 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2394 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2395 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2396 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2397 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2398 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2399 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2400 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2401 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2402
2403 ALL_COMPONENTS="
2404     $BSF_LIST
2405     $DECODER_LIST
2406     $DEMUXER_LIST
2407     $ENCODER_LIST
2408     $FILTER_LIST
2409     $HWACCEL_LIST
2410     $INDEV_LIST
2411     $MUXER_LIST
2412     $OUTDEV_LIST
2413     $PARSER_LIST
2414     $PROTOCOL_LIST
2415 "
2416
2417 for n in $COMPONENT_LIST; do
2418     v=$(toupper ${n%s})_LIST
2419     eval enable \$$v
2420     eval ${n}_if_any="\$$v"
2421 done
2422
2423 enable $ARCH_EXT_LIST
2424
2425 die_unknown(){
2426     echo "Unknown option \"$1\"."
2427     echo "See $0 --help for available options."
2428     exit 1
2429 }
2430
2431 print_3_columns() {
2432     cat | tr ' ' '\n' | sort | pr -r -3 -t
2433 }
2434
2435 show_list() {
2436     suffix=_$1
2437     shift
2438     echo $* | sed s/$suffix//g | print_3_columns
2439     exit 0
2440 }
2441
2442 rand_list(){
2443     IFS=', '
2444     set -- $*
2445     unset IFS
2446     for thing; do
2447         comp=${thing%:*}
2448         prob=${thing#$comp}
2449         prob=${prob#:}
2450         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2451         echo "prob ${prob:-0.5}"
2452         printf '%s\n' $comp
2453     done
2454 }
2455
2456 do_random(){
2457     action=$1
2458     shift
2459     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2460     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2461 }
2462
2463 for opt do
2464     optval="${opt#*=}"
2465     case "$opt" in
2466         --extra-ldflags=*)
2467             add_ldflags $optval
2468         ;;
2469         --extra-ldexeflags=*)
2470             add_ldexeflags $optval
2471         ;;
2472         --extra-libs=*)
2473             add_extralibs $optval
2474         ;;
2475         --disable-devices)
2476             disable $INDEV_LIST $OUTDEV_LIST
2477         ;;
2478         --enable-debug=*)
2479             debuglevel="$optval"
2480         ;;
2481         --disable-programs)
2482             disable $PROGRAM_LIST
2483         ;;
2484         --disable-everything)
2485             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2486         ;;
2487         --disable-all)
2488             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2489             disable $LIBRARY_LIST $PROGRAM_LIST doc
2490         ;;
2491         --enable-random|--disable-random)
2492             action=${opt%%-random}
2493             do_random ${action#--} $COMPONENT_LIST
2494         ;;
2495         --enable-random=*|--disable-random=*)
2496             action=${opt%%-random=*}
2497             do_random ${action#--} $optval
2498         ;;
2499         --enable-*=*|--disable-*=*)
2500             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2501             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2502             eval list=\$$(toupper $thing)_LIST
2503             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2504             $action $(filter "$name" $list)
2505         ;;
2506         --enable-avserver|--disable-avserver*)
2507             warn "avserver has been removed, the ${opt} option is only"\
2508                  "provided for compatibility and will be removed in the future"
2509         ;;
2510         --enable-?*|--disable-?*)
2511             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2512             if is_in $option $COMPONENT_LIST; then
2513                 test $action = disable && action=unset
2514                 eval $action \$$(toupper ${option%s})_LIST
2515             elif is_in $option $CMDLINE_SELECT; then
2516                 $action $option
2517             else
2518                 die_unknown $opt
2519             fi
2520         ;;
2521         --list-*)
2522             NAME="${opt#--list-}"
2523             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2524             NAME=${NAME%s}
2525             eval show_list $NAME \$$(toupper $NAME)_LIST
2526         ;;
2527         --help|-h) show_help
2528         ;;
2529         *)
2530             optname="${opt%%=*}"
2531             optname="${optname#--}"
2532             optname=$(echo "$optname" | sed 's/-/_/g')
2533             if is_in $optname $CMDLINE_SET; then
2534                 eval $optname='$optval'
2535             elif is_in $optname $CMDLINE_APPEND; then
2536                 append $optname "$optval"
2537             else
2538                 die_unknown $opt
2539             fi
2540         ;;
2541     esac
2542 done
2543
2544 disabled logging && logfile=/dev/null
2545
2546 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2547 set >> $logfile
2548
2549 case "$toolchain" in
2550     clang-asan)
2551         cc_default="clang"
2552         add_cflags  -fsanitize=address
2553         add_ldflags -fsanitize=address
2554     ;;
2555     clang-tsan)
2556         cc_default="clang"
2557         add_cflags  -fsanitize=thread -pie
2558         add_ldflags -fsanitize=thread -pie
2559     ;;
2560     clang-usan)
2561         cc_default="clang"
2562         add_cflags  -fsanitize=undefined -O1
2563         add_ldflags -fsanitize=undefined
2564     ;;
2565     gcc-asan)
2566         cc_default="gcc"
2567         add_cflags  -fsanitize=address
2568         add_ldflags -fsanitize=address
2569     ;;
2570     gcc-tsan)
2571         cc_default="gcc"
2572         add_cflags  -fsanitize=thread -pie -fPIC
2573         add_ldflags -fsanitize=thread -pie -fPIC
2574     ;;
2575     gcc-usan)
2576         cc_default="gcc"
2577         add_cflags  -fsanitize=undefined
2578         add_ldflags -fsanitize=undefined
2579     ;;
2580     valgrind-massif)
2581         target_exec_default="valgrind"
2582         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2583     ;;
2584     valgrind-memcheck)
2585         target_exec_default="valgrind"
2586         target_exec_args="--track-origins=yes --leak-check=full"
2587     ;;
2588     msvc)
2589         # Check whether the current MSVC version needs the C99 converter.
2590         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2591         # support enough of C99 to build libav. Default to the new
2592         # behaviour if the regexp was unable to match anything, since this
2593         # successfully parses the version number of existing supported
2594         # versions that require the converter (MSVC 2010 and 2012).
2595         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2596         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2597             cc_default="cl"
2598         else
2599             cc_default="c99wrap cl"
2600         fi
2601         ld_default="link"
2602         nm_default="dumpbin -symbols"
2603         ar_default="lib"
2604         target_os_default="win32"
2605         # Use a relative path for TMPDIR. This makes sure all the
2606         # ffconf temp files are written with a relative path, avoiding
2607         # issues with msys/win32 path conversion for MSVC parameters
2608         # such as -Fo<file> or -out:<file>.
2609         TMPDIR=.
2610     ;;
2611     icl)
2612         cc_default="icl"
2613         ld_default="xilink"
2614         nm_default="dumpbin -symbols"
2615         ar_default="xilib"
2616         target_os_default="win32"
2617         TMPDIR=.
2618     ;;
2619     gcov)
2620         add_cflags  -fprofile-arcs -ftest-coverage
2621         add_ldflags -fprofile-arcs -ftest-coverage
2622     ;;
2623     hardened)
2624         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2625         add_cflags   -fno-strict-overflow -fstack-protector-all
2626         add_ldflags  -Wl,-z,relro -Wl,-z,now
2627     ;;
2628     ?*)
2629         die "Unknown toolchain $toolchain"
2630     ;;
2631 esac
2632
2633 test -n "$cross_prefix" && enable cross_compile
2634
2635 if enabled cross_compile; then
2636     test -n "$arch" && test -n "$target_os" ||
2637         die "Must specify target arch and OS when cross-compiling"
2638 fi
2639
2640 ar_default="${cross_prefix}${ar_default}"
2641 cc_default="${cross_prefix}${cc_default}"
2642 nm_default="${cross_prefix}${nm_default}"
2643 pkg_config_default="${cross_prefix}${pkg_config_default}"
2644 ranlib="${cross_prefix}${ranlib}"
2645 strip="${cross_prefix}${strip}"
2646
2647 sysinclude_default="${sysroot}/usr/include"
2648
2649 set_default arch cc pkg_config sysinclude target_exec target_os
2650 enabled cross_compile || host_cc_default=$cc
2651 set_default host_cc
2652
2653 if ! $pkg_config --version >/dev/null 2>&1; then
2654     warn "$pkg_config not found, library detection may fail."
2655     pkg_config=false
2656 fi
2657
2658 exesuf() {
2659     case $1 in
2660         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2661     esac
2662 }
2663
2664 EXESUF=$(exesuf $target_os)
2665 HOSTEXESUF=$(exesuf $host_os)
2666
2667 # set temporary file name
2668 : ${TMPDIR:=$TEMPDIR}
2669 : ${TMPDIR:=$TMP}
2670 : ${TMPDIR:=/tmp}
2671
2672 if ! check_cmd mktemp -u XXXXXX; then
2673     # simple replacement for missing mktemp
2674     # NOT SAFE FOR GENERAL USE
2675     mktemp(){
2676         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2677     }
2678 fi
2679
2680 tmpfile(){
2681     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2682         (set -C; exec > $tmp) 2>/dev/null ||
2683         die "Unable to create temporary file in $TMPDIR."
2684     append TMPFILES $tmp
2685     eval $1=$tmp
2686 }
2687
2688 trap 'rm -f -- $TMPFILES' EXIT
2689
2690 tmpfile TMPASM .asm
2691 tmpfile TMPC   .c
2692 tmpfile TMPE   $EXESUF
2693 tmpfile TMPH   .h
2694 tmpfile TMPO   .o
2695 tmpfile TMPS   .S
2696 tmpfile TMPSH  .sh
2697 tmpfile TMPV   .ver
2698
2699 unset -f mktemp
2700
2701 chmod +x $TMPE
2702
2703 # make sure we can execute files in $TMPDIR
2704 cat > $TMPSH 2>> $logfile <<EOF
2705 #! /bin/sh
2706 EOF
2707 chmod +x $TMPSH >> $logfile 2>&1
2708 if ! $TMPSH >> $logfile 2>&1; then
2709     cat <<EOF
2710 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2711 variable to another directory and make sure that it is not mounted noexec.
2712 EOF
2713     die "Sanity test failed."
2714 fi
2715
2716 armasm_flags(){
2717     for flag; do
2718         case $flag in
2719             # Filter out MSVC cl.exe options from cflags that shouldn't
2720             # be passed to gas-preprocessor
2721             -M[TD]*)                                            ;;
2722             *)                  echo $flag                      ;;
2723         esac
2724    done
2725 }
2726
2727 ccc_flags(){
2728     for flag; do
2729         case $flag in
2730             -std=c99)           echo -c99                       ;;
2731             -mcpu=*)            echo -arch ${flag#*=}           ;;
2732             -mieee)             echo -ieee                      ;;
2733             -O*|-fast)          echo $flag                      ;;
2734             -fno-math-errno)    echo -assume nomath_errno       ;;
2735             -g)                 echo -g3                        ;;
2736             -Wall)              echo -msg_enable level2         ;;
2737             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2738             -Wl,*)              echo $flag                      ;;
2739             -f*|-W*)                                            ;;
2740             *)                  echo $flag                      ;;
2741         esac
2742    done
2743 }
2744
2745 cparser_flags(){
2746     for flag; do
2747         case $flag in
2748             -Wno-switch)             echo -Wno-switch-enum ;;
2749             -Wno-format-zero-length) ;;
2750             -Wdisabled-optimization) ;;
2751             -Wno-pointer-sign)       echo -Wno-other ;;
2752             *)                       echo $flag ;;
2753         esac
2754     done
2755 }
2756
2757 msvc_common_flags(){
2758     for flag; do
2759         case $flag in
2760             # In addition to specifying certain flags under the compiler
2761             # specific filters, they must be specified here as well or else the
2762             # generic catch all at the bottom will print the original flag.
2763             -Wall)                ;;
2764             -std=c99)             ;;
2765             # Common flags
2766             -fomit-frame-pointer) ;;
2767             -g)                   echo -Z7 ;;
2768             -fno-math-errno)      ;;
2769             -fno-common)          ;;
2770             -fno-signed-zeros)    ;;
2771             -fPIC)                ;;
2772             -mthumb)              ;;
2773             -march=*)             ;;
2774             -lz)                  echo zlib.lib ;;
2775             -lavifil32)           echo vfw32.lib ;;
2776             -lavicap32)           echo vfw32.lib user32.lib ;;
2777             -l*)                  echo ${flag#-l}.lib ;;
2778             -L*)                  echo -libpath:${flag#-L} ;;
2779             *)                    echo $flag ;;
2780         esac
2781     done
2782 }
2783
2784 msvc_flags(){
2785     msvc_common_flags "$@"
2786     for flag; do
2787         case $flag in
2788             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2789                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2790                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2791                                        -wd4273 -wd4554 -wd4701 ;;
2792         esac
2793     done
2794 }
2795
2796 icl_flags(){
2797     msvc_common_flags "$@"
2798     for flag; do
2799         case $flag in
2800             # Despite what Intel's documentation says -Wall, which is supported
2801             # on Windows, does enable remarks so disable them here.
2802             -Wall)                echo $flag -Qdiag-disable:remark ;;
2803             -std=c99)             echo -Qstd=c99 ;;
2804         esac
2805     done
2806 }
2807
2808 pgi_flags(){
2809     for flag; do
2810         case $flag in
2811             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2812             -fomit-frame-pointer) echo -Mnoframe ;;
2813             -g)                   echo -gopt ;;
2814             *)                    echo $flag ;;
2815         esac
2816     done
2817 }
2818
2819 suncc_flags(){
2820     for flag; do
2821         case $flag in
2822             -march=*|-mcpu=*)
2823                 case "${flag#*=}" in
2824                     native)                   echo -xtarget=native       ;;
2825                     v9|niagara)               echo -xarch=sparc          ;;
2826                     ultrasparc)               echo -xarch=sparcvis       ;;
2827                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2828                     i586|pentium)             echo -xchip=pentium        ;;
2829                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2830                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2831                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2832                     pentium4*)          echo -xtarget=pentium4           ;;
2833                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2834                     *-sse3)             echo -xarch=sse3                 ;;
2835                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2836                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2837                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2838                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2839                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2840                     k8|opteron|athlon64|athlon-fx)
2841                                                echo -xarch=sse2a         ;;
2842                     athlon*)                   echo -xarch=pentium_proa  ;;
2843                 esac
2844                 ;;
2845             -std=c99)             echo -xc99              ;;
2846             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2847             -fPIC)                echo -KPIC -xcode=pic32 ;;
2848             -W*,*)                echo $flag              ;;
2849             -f*-*|-W*|-mimpure-text)                      ;;
2850             -shared)              echo -G                 ;;
2851             *)                    echo $flag              ;;
2852         esac
2853     done
2854 }
2855
2856 tms470_flags(){
2857     for flag; do
2858         case $flag in
2859             -march=*|-mcpu=*)
2860                 case "${flag#*=}" in
2861                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2862                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2863                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2864                     armv6*|arm11*)          echo -mv=6   ;;
2865                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2866                                             echo -mv=5e  ;;
2867                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2868                 esac
2869                 ;;
2870             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2871             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2872             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2873             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2874             -msoft-float)   echo --float_support=vfplib       ;;
2875             -O[0-3]|-mf=*)  echo $flag                        ;;
2876             -g)             echo -g -mn                       ;;
2877             -pds=*)         echo $flag                        ;;
2878             -D*|-I*)        echo $flag                        ;;
2879             --gcc|--abi=*)  echo $flag                        ;;
2880             -me)            echo $flag                        ;;
2881         esac
2882     done
2883 }
2884
2885 probe_cc(){
2886     pfx=$1
2887     _cc=$2
2888
2889     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2890     unset _ld_o _ldflags _ld_lib _ld_path
2891     unset _depflags _DEPCMD _DEPFLAGS
2892     _flags_filter=echo
2893
2894     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2895         _type=llvm_gcc
2896         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2897         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2898         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2899         _cflags_speed='-O3'
2900         _cflags_size='-Os'
2901     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2902         _type=gcc
2903         gcc_version=$($_cc --version | head -n1)
2904         gcc_basever=$($_cc -dumpversion)
2905         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2906         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2907         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2908         if ! $_cc -dumpversion | grep -q '^2\.'; then
2909             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2910         fi
2911         _cflags_speed='-O3'
2912         _cflags_size='-Os'
2913     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2914         _type=icc
2915         _ident=$($_cc --version | head -n1)
2916         _depflags='-MMD'
2917         _cflags_speed='-O3'
2918         _cflags_size='-Os'
2919         _cflags_noopt='-O1'
2920     elif $_cc -v 2>&1 | grep -q xlc; then
2921         _type=xlc
2922         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2923         _cflags_speed='-O5'
2924         _cflags_size='-O5 -qcompact'
2925     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2926         _type=ccc
2927         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2928         _DEPFLAGS='-M'
2929         _cflags_speed='-fast'
2930         _cflags_size='-O1'
2931         _flags_filter=ccc_flags
2932     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2933         test -d "$sysroot" || die "No valid sysroot specified."
2934         _type=armcc
2935         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2936         armcc_conf="$PWD/armcc.conf"
2937         $_cc --arm_linux_configure                 \
2938              --arm_linux_config_file="$armcc_conf" \
2939              --configure_sysroot="$sysroot"        \
2940              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2941              die "Error creating armcc configuration file."
2942         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2943         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2944         as_default="${cross_prefix}gcc"
2945         _depflags='-MMD'
2946         _cflags_speed='-O3'
2947         _cflags_size='-Os'
2948     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2949         _type=tms470
2950         _ident=$($_cc -version | head -n1 | tr -s ' ')
2951         _flags='--gcc --abi=eabi -me'
2952         _cc_e='-ppl -fe=$@'
2953         _cc_o='-fe=$@'
2954         _depflags='-ppa -ppd=$(@:.o=.d)'
2955         _cflags_speed='-O3 -mf=5'
2956         _cflags_size='-O3 -mf=2'
2957         _flags_filter=tms470_flags
2958     elif $_cc -v 2>&1 | grep -q clang; then
2959         _type=clang
2960         _ident=$($_cc --version | head -n1)
2961         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2962         _cflags_speed='-O3'
2963         _cflags_size='-Os'
2964     elif $_cc -V 2>&1 | grep -q Sun; then
2965         _type=suncc
2966         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2967         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2968         _DEPFLAGS='-xM1 -xc99'
2969         _ldflags='-std=c99'
2970         _cflags_speed='-O5'
2971         _cflags_size='-O5 -xspace'
2972         _flags_filter=suncc_flags
2973     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2974         _type=pathscale
2975         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2976         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2977         _cflags_speed='-O2'
2978         _cflags_size='-Os'
2979         _flags_filter='filter_out -Wdisabled-optimization'
2980     elif $_cc -v 2>&1 | grep -q Open64; then
2981         _type=open64
2982         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2983         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2984         _cflags_speed='-O2'
2985         _cflags_size='-Os'
2986         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2987     elif $_cc -V 2>&1 | grep -q Portland; then
2988         _type=pgi
2989         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2990         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2991         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2992         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2993         _cflags_noopt="-O1"
2994         _flags_filter=pgi_flags
2995     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
2996         _type=armasm
2997         _ident=$($_cc | head -n1)
2998         # 4509: "This form of conditional instruction is deprecated"
2999         _flags="-nologo -ignore 4509"
3000         _flags_filter=armasm_flags
3001     elif $_cc 2>&1 | grep -q Microsoft; then
3002         _type=msvc
3003         _ident=$($_cc 2>&1 | head -n1)
3004         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3005         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3006         _cflags_speed="-O2"
3007         _cflags_size="-O1"
3008         if $_cc 2>&1 | grep -q Linker; then
3009             _ld_o='-out:$@'
3010         else
3011             _ld_o='-Fe$@'
3012         fi
3013         _cc_o='-Fo$@'
3014         _cc_e='-P -Fi$@'
3015         _flags_filter=msvc_flags
3016         _ld_lib='lib%.a'
3017         _ld_path='-libpath:'
3018         _flags='-nologo'
3019         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3020         if [ $pfx = hostcc ]; then
3021             append _cflags -Dsnprintf=_snprintf
3022         fi
3023     elif $_cc 2>&1 | grep -q Intel; then
3024         _type=icl
3025         _ident=$($_cc 2>&1 | head -n1)
3026         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3027         # Not only is O3 broken on 13.x+ but it is slower on all previous
3028         # versions (tested) as well.
3029         _cflags_speed="-O2"
3030         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3031         if $_cc 2>&1 | grep -q Linker; then
3032             _ld_o='-out:$@'
3033         else
3034             _ld_o='-Fe$@'
3035         fi
3036         _cc_o='-Fo$@'
3037         _cc_e='-P'
3038         _flags_filter=icl_flags
3039         _ld_lib='lib%.a'
3040         _ld_path='-libpath:'
3041         # -Qdiag-error to make icl error when seeing certain unknown arguments
3042         _flags='-nologo -Qdiag-error:4044,10157'
3043         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3044         # with MSVC which enables it by default.
3045         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3046         if [ $pfx = hostcc ]; then
3047             append _cflags -Dsnprintf=_snprintf
3048         fi
3049     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3050         _type=cparser
3051         _ident=$($_cc --version | head -n1)
3052         _depflags='-MMD'
3053         _cflags_speed='-O4'
3054         _cflags_size='-O2'
3055         _flags_filter=cparser_flags
3056     fi
3057
3058     eval ${pfx}_type=\$_type
3059     eval ${pfx}_ident=\$_ident
3060 }
3061
3062 set_ccvars(){
3063     eval ${1}_C=\${_cc_c-\${${1}_C}}
3064     eval ${1}_E=\${_cc_e-\${${1}_E}}
3065     eval ${1}_O=\${_cc_o-\${${1}_O}}
3066
3067     if [ -n "$_depflags" ]; then
3068         eval ${1}_DEPFLAGS=\$_depflags
3069     else
3070         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3071         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3072         eval DEP${1}FLAGS=\$_flags
3073     fi
3074 }
3075
3076 probe_cc cc "$cc"
3077 cflags_filter=$_flags_filter
3078 cflags_speed=$_cflags_speed
3079 cflags_size=$_cflags_size
3080 cflags_noopt=$_cflags_noopt
3081 add_cflags $_flags $_cflags
3082 cc_ldflags=$_ldflags
3083 set_ccvars CC
3084
3085 probe_cc hostcc "$host_cc"
3086 host_cflags_filter=$_flags_filter
3087 add_host_cflags  $_flags $_cflags
3088 set_ccvars HOSTCC
3089
3090 test -n "$cc_type" && enable $cc_type ||
3091     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3092
3093 : ${as_default:=$cc}
3094 : ${dep_cc_default:=$cc}
3095 : ${ld_default:=$cc}
3096 : ${host_ld_default:=$host_cc}
3097 set_default ar as dep_cc ld host_ld
3098
3099 probe_cc as "$as"
3100 asflags_filter=$_flags_filter
3101 add_asflags $_flags $_cflags
3102 set_ccvars AS
3103
3104 probe_cc ld "$ld"
3105 ldflags_filter=$_flags_filter
3106 add_ldflags $_flags $_ldflags
3107 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3108 LD_O=${_ld_o-$LD_O}
3109 LD_LIB=${_ld_lib-$LD_LIB}
3110 LD_PATH=${_ld_path-$LD_PATH}
3111
3112 probe_cc hostld "$host_ld"
3113 host_ldflags_filter=$_flags_filter
3114 add_host_ldflags $_flags $_ldflags
3115 HOSTLD_O=${_ld_o-$HOSTLD_O}
3116
3117 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3118     probe_cc depcc "$dep_cc"
3119     CCDEP=${_DEPCMD:-$DEPCMD}
3120     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3121     DEPCCFLAGS=$_flags
3122 fi
3123
3124 if $ar 2>&1 | grep -q Microsoft; then
3125     arflags="-nologo"
3126     ar_o='-out:$@'
3127 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3128     arflags="rq"
3129     ar_o='$@'
3130 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3131     arflags='-Xany -r -c'
3132     ar_o='$@'
3133 else
3134     arflags="rc"
3135     ar_o='$@'
3136 fi
3137
3138 add_cflags $extra_cflags
3139 add_asflags $extra_cflags
3140
3141 if test -n "$sysroot"; then
3142     case "$cc_type" in
3143         gcc|llvm_gcc|clang)
3144             add_cppflags --sysroot="$sysroot"
3145             add_ldflags --sysroot="$sysroot"
3146         ;;
3147         tms470)
3148             add_cppflags -I"$sysinclude"
3149             add_ldflags  --sysroot="$sysroot"
3150         ;;
3151     esac
3152 fi
3153
3154 if test "$cpu" = host; then
3155     enabled cross_compile &&
3156         die "--cpu=host makes no sense when cross-compiling."
3157
3158     case "$cc_type" in
3159         gcc|llvm_gcc)
3160             check_native(){
3161                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3162                 sed -n "/cc1.*$1=/{
3163                             s/.*$1=\\([^ ]*\\).*/\\1/
3164                             p
3165                             q
3166                         }" $TMPE
3167             }
3168             cpu=$(check_native -march || check_native -mcpu)
3169         ;;
3170     esac
3171
3172     test "${cpu:-host}" = host &&
3173         die "--cpu=host not supported with compiler $cc"
3174 fi
3175
3176 # Deal with common $arch aliases
3177 case "$arch" in
3178     aarch64|arm64)
3179         arch="aarch64"
3180     ;;
3181     arm*)
3182         arch="arm"
3183     ;;
3184     mips*|IP*)
3185         arch="mips"
3186     ;;
3187     parisc*|hppa*)
3188         arch="parisc"
3189     ;;
3190     "Power Macintosh"|ppc*|powerpc*)
3191         arch="ppc"
3192     ;;
3193     s390|s390x)
3194         arch="s390"
3195     ;;
3196     sh4|sh)
3197         arch="sh4"
3198     ;;
3199     sun4u|sparc*)
3200         arch="sparc"
3201     ;;
3202     tilegx|tile-gx)
3203         arch="tilegx"
3204     ;;
3205     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3206         arch="x86"
3207     ;;
3208 esac
3209
3210 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3211 enable $arch
3212
3213 # Add processor-specific flags
3214 if enabled aarch64; then
3215
3216     case $cpu in
3217         armv*)
3218             cpuflags="-march=$cpu"
3219         ;;
3220         *)
3221             cpuflags="-mcpu=$cpu"
3222         ;;
3223     esac
3224
3225 elif enabled alpha; then
3226
3227     cpuflags="-mcpu=$cpu"
3228
3229 elif enabled arm; then
3230
3231     check_arm_arch() {
3232         check_cpp_condition stddef.h \
3233             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3234             $cpuflags
3235     }
3236
3237     probe_arm_arch() {
3238         if   check_arm_arch 4;        then echo armv4;
3239         elif check_arm_arch 4T;       then echo armv4t;
3240         elif check_arm_arch 5;        then echo armv5;
3241         elif check_arm_arch 5E;       then echo armv5e;
3242         elif check_arm_arch 5T;       then echo armv5t;
3243         elif check_arm_arch 5TE;      then echo armv5te;
3244         elif check_arm_arch 5TEJ;     then echo armv5te;
3245         elif check_arm_arch 6;        then echo armv6;
3246         elif check_arm_arch 6J;       then echo armv6j;
3247         elif check_arm_arch 6K;       then echo armv6k;
3248         elif check_arm_arch 6Z;       then echo armv6z;
3249         elif check_arm_arch 6ZK;      then echo armv6zk;
3250         elif check_arm_arch 6T2;      then echo armv6t2;
3251         elif check_arm_arch 7;        then echo armv7;
3252         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3253         elif check_arm_arch 7S;       then echo armv7-a;
3254         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3255         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3256         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3257         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3258         fi
3259     }
3260
3261     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3262
3263     case $cpu in
3264         armv*)
3265             cpuflags="-march=$cpu"
3266             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3267         ;;
3268         *)
3269             cpuflags="-mcpu=$cpu"
3270             case $cpu in
3271                 cortex-a*)                               subarch=armv7a  ;;
3272                 cortex-r*)                               subarch=armv7r  ;;
3273                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3274                 arm11*)                                  subarch=armv6   ;;
3275                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3276                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3277                 *)                             subarch=$(probe_arm_arch) ;;
3278             esac
3279         ;;
3280     esac
3281
3282     case "$subarch" in
3283         armv5t*)    enable fast_clz                ;;
3284         armv[6-8]*) enable fast_clz fast_unaligned ;;
3285     esac
3286
3287 elif enabled avr32; then
3288
3289     case $cpu in
3290         ap7[02]0[0-2])
3291             subarch="avr32_ap"
3292             cpuflags="-mpart=$cpu"
3293         ;;
3294         ap)
3295             subarch="avr32_ap"
3296             cpuflags="-march=$cpu"
3297         ;;
3298         uc3[ab]*)
3299             subarch="avr32_uc"
3300             cpuflags="-mcpu=$cpu"
3301         ;;
3302         uc)
3303             subarch="avr32_uc"
3304             cpuflags="-march=$cpu"
3305         ;;
3306     esac
3307
3308 elif enabled bfin; then
3309
3310     cpuflags="-mcpu=$cpu"
3311
3312 elif enabled mips; then
3313
3314     cpuflags="-march=$cpu"
3315
3316 elif enabled ppc; then
3317
3318     disable ldbrx
3319
3320     case $(tolower $cpu) in
3321         601|ppc601|powerpc601)
3322             cpuflags="-mcpu=601"
3323             disable altivec
3324         ;;
3325         603*|ppc603*|powerpc603*)
3326             cpuflags="-mcpu=603"
3327             disable altivec
3328         ;;
3329         604*|ppc604*|powerpc604*)
3330             cpuflags="-mcpu=604"
3331             disable altivec
3332         ;;
3333         g3|75*|ppc75*|powerpc75*)
3334             cpuflags="-mcpu=750"
3335             disable altivec
3336         ;;
3337         g4|745*|ppc745*|powerpc745*)
3338             cpuflags="-mcpu=7450"
3339             disable vsx
3340         ;;
3341         74*|ppc74*|powerpc74*)
3342             cpuflags="-mcpu=7400"
3343             disable vsx
3344         ;;
3345         g5|970|ppc970|powerpc970)
3346             cpuflags="-mcpu=970"
3347             disable vsx
3348         ;;
3349         power[3-6]*)
3350             cpuflags="-mcpu=$cpu"
3351             disable vsx
3352         ;;
3353         power[7-8]*)
3354             cpuflags="-mcpu=$cpu"
3355             enable ldbrx
3356         ;;
3357         cell)
3358             cpuflags="-mcpu=cell"
3359             enable ldbrx
3360             disable vsx
3361         ;;
3362         e500mc)
3363             cpuflags="-mcpu=e500mc"
3364             disable altivec
3365         ;;
3366         e500v2)
3367             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3368             disable altivec
3369             disable dcbzl
3370         ;;
3371         e500)
3372             cpuflags="-mcpu=8540 -mhard-float"
3373             disable altivec
3374             disable dcbzl
3375         ;;
3376     esac
3377
3378 elif enabled sparc; then
3379
3380     case $cpu in
3381         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3382             cpuflags="-mcpu=$cpu"
3383         ;;
3384         ultrasparc*|niagara[234])
3385             cpuflags="-mcpu=$cpu"
3386         ;;
3387     esac
3388
3389 elif enabled x86; then
3390
3391     case $cpu in
3392         i[345]86|pentium)
3393             cpuflags="-march=$cpu"
3394             disable i686
3395             disable mmx
3396         ;;
3397         # targets that do NOT support nopl and conditional mov (cmov)
3398         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3399             cpuflags="-march=$cpu"
3400             disable i686
3401         ;;
3402         # targets that do support nopl and conditional mov (cmov)
3403         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3404             cpuflags="-march=$cpu"
3405             enable i686
3406             enable fast_cmov
3407         ;;
3408         # targets that do support conditional mov but on which it's slow
3409         pentium4|pentium4m|prescott|nocona)
3410             cpuflags="-march=$cpu"
3411             enable i686
3412             disable fast_cmov
3413         ;;
3414     esac
3415
3416 fi
3417
3418 if [ "$cpu" != generic ]; then
3419     add_cflags  $cpuflags
3420     add_asflags $cpuflags
3421 fi
3422
3423 # compiler sanity check
3424 check_exec <<EOF
3425 int main(void){ return 0; }
3426 EOF
3427 if test "$?" != 0; then
3428     echo "$cc is unable to create an executable file."
3429     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3430         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3431         echo "Only do this if you know what cross compiling means."
3432     fi
3433     die "C compiler test failed."
3434 fi
3435
3436 add_cppflags -D_ISOC99_SOURCE
3437 check_cflags -std=c99
3438 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3439 #include <stdlib.h>
3440 EOF
3441 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3442 #include <stdlib.h>
3443 EOF
3444
3445 add_host_cppflags -D_ISOC99_SOURCE
3446 check_host_cflags -std=c99
3447 check_host_cflags -Wall
3448 check_host_cflags -O3
3449
3450 check_64bit(){
3451     arch32=$1
3452     arch64=$2
3453     expr=$3
3454     check_code cc "" "int test[2*($expr) - 1]" &&
3455         subarch=$arch64 || subarch=$arch32
3456 }
3457
3458 case "$arch" in
3459     aarch64|alpha|ia64)
3460         spic=$shared
3461     ;;
3462     mips)
3463         check_64bit mips mips64 '_MIPS_SIM > 1'
3464         spic=$shared
3465     ;;
3466     parisc)
3467         check_64bit parisc parisc64 'sizeof(void *) > 4'
3468         spic=$shared
3469     ;;
3470     ppc)
3471         check_64bit ppc ppc64 'sizeof(void *) > 4'
3472         spic=$shared
3473     ;;
3474     s390)
3475         check_64bit s390 s390x 'sizeof(void *) > 4'
3476         spic=$shared
3477     ;;
3478     sparc)
3479         check_64bit sparc sparc64 'sizeof(void *) > 4'
3480         spic=$shared
3481     ;;
3482     x86)
3483         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3484         if test "$subarch" = "x86_64"; then
3485             spic=$shared
3486         fi
3487     ;;
3488 esac
3489
3490 enable $subarch
3491 enabled spic && enable_weak pic
3492
3493 # OS specific
3494 case $target_os in
3495     aix)
3496         SHFLAGS=-shared
3497         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3498         enabled shared && add_ldflags -Wl,-brtl
3499         ;;
3500     android)
3501         disable symver
3502         enable section_data_rel_ro
3503         SLIB_INSTALL_NAME='$(SLIBNAME)'
3504         SLIB_INSTALL_LINKS=
3505         # soname not set on purpose
3506         SHFLAGS=-shared
3507         ;;
3508     haiku)
3509         prefix_default="/boot/common"
3510         network_extralibs="-lnetwork"
3511         host_libs=
3512         ;;
3513     sunos)
3514         SHFLAGS='-shared -Wl,-h,$$(@F)'
3515         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3516         network_extralibs="-lsocket -lnsl"
3517         # When using suncc to build, the Solaris linker will mark
3518         # an executable with each instruction set encountered by
3519         # the Solaris assembler.  As our libraries contain their own
3520         # guards for processor-specific code, instead suppress
3521         # generation of the HWCAPS ELF section on Solaris x86 only.
3522         enabled_all suncc x86 &&
3523             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3524             add_ldflags -Wl,-M,mapfile
3525         nm_default='nm -P -g'
3526         ;;
3527     netbsd)
3528         disable symver
3529         oss_indev_extralibs="-lossaudio"
3530         oss_outdev_extralibs="-lossaudio"
3531         ;;
3532     openbsd|bitrig)
3533         disable symver
3534         SHFLAGS='-shared'
3535         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3536         SLIB_INSTALL_LINKS=
3537         oss_indev_extralibs="-lossaudio"
3538         oss_outdev_extralibs="-lossaudio"
3539         ;;
3540     dragonfly)
3541         disable symver
3542         ;;
3543     freebsd)
3544         ;;
3545     bsd/os)
3546         add_extralibs -lpoll -lgnugetopt
3547         ;;
3548     darwin)
3549         enabled ppc && add_asflags -force_cpusubtype_ALL
3550         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3551         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3552         add_ldflags -Wl,-dynamic,-search_paths_first
3553         SLIBSUF=".dylib"
3554         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3555         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3556         objformat="macho"
3557         enabled x86_64 && objformat="macho64"
3558         enabled_any pic shared ||
3559             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3560         ;;
3561     mingw32*)
3562         if test $target_os = "mingw32ce"; then
3563             disable network
3564         else
3565             target_os=mingw32
3566         fi
3567         LIBTARGET=i386
3568         if enabled x86_64; then
3569             LIBTARGET="i386:x86-64"
3570         elif enabled arm; then
3571             LIBTARGET=arm-wince
3572         fi
3573         check_ldflags -Wl,--nxcompat
3574         check_ldflags -Wl,--dynamicbase
3575         shlibdir_default="$bindir_default"
3576         SLIBPREF=""
3577         SLIBSUF=".dll"
3578         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3579         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3580         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3581         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3582         SLIB_INSTALL_LINKS=
3583         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3584         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3585         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3586         objformat="win32"
3587         dlltool="${cross_prefix}dlltool"
3588         ranlib=:
3589         enable dos_paths
3590         ;;
3591     win32|win64)
3592         disable symver
3593         if enabled shared; then
3594             # Link to the import library instead of the normal static library
3595             # for shared libs.
3596             LD_LIB='%.lib'
3597             # Cannot build both shared and static libs with MSVC or icl.
3598             disable static
3599         fi
3600         shlibdir_default="$bindir_default"
3601         SLIBPREF=""
3602         SLIBSUF=".dll"
3603         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3604         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3605         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3606         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3607         SLIB_INSTALL_LINKS=
3608         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3609         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3610         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3611         objformat="win32"
3612         ranlib=:
3613         enable dos_paths
3614         ;;
3615     cygwin*)
3616         target_os=cygwin
3617         shlibdir_default="$bindir_default"
3618         SLIBPREF="cyg"
3619         SLIBSUF=".dll"
3620         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3621         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3622         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3623         SLIB_INSTALL_LINKS=
3624         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3625         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3626         objformat="win32"
3627         enable dos_paths
3628         ;;
3629     *-dos|freedos|opendos)
3630         network_extralibs="-lsocket"
3631         objformat="coff"
3632         enable dos_paths
3633         add_cppflags -U__STRICT_ANSI__
3634         ;;
3635     linux)
3636         enable dv1394
3637         enable section_data_rel_ro
3638         ;;
3639     irix*)
3640         target_os=irix
3641         ranlib="echo ignoring ranlib"
3642         ;;
3643     os/2*)
3644         ln_s="cp -f"
3645         objformat="aout"
3646         add_cppflags -D_GNU_SOURCE
3647         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3648         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3649         LIBSUF="_s.a"
3650         SLIBPREF=""
3651         SLIBSUF=".dll"
3652         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3653         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3654         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3655             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3656             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3657             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3658             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3659             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3660         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3661             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3662         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3663         enable dos_paths
3664         ;;
3665     gnu/kfreebsd)
3666         add_cppflags -D_BSD_SOURCE
3667         ;;
3668     gnu)
3669         ;;
3670     qnx)
3671         add_cppflags -D_QNX_SOURCE
3672         network_extralibs="-lsocket"
3673         ;;
3674     symbian)
3675         SLIBSUF=".dll"
3676         enable dos_paths
3677         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3678         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3679         add_ldflags -Wl,--target1-abs,--no-undefined \
3680                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3681                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3682         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3683                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3684                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3685         ;;
3686     osf1)
3687         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3688         ;;
3689     minix)
3690         ;;
3691     plan9)
3692         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3693                      -D_REENTRANT_SOURCE        \
3694                      -D_RESEARCH_SOURCE         \
3695                      -DFD_SETSIZE=96            \
3696                      -DHAVE_SOCK_OPTS
3697         add_compat strtod.o strtod=avpriv_strtod
3698         network_extralibs='-lbsd'
3699         exeobjs=compat/plan9/main.o
3700         cp_f='cp'
3701         ;;
3702     none)
3703         ;;
3704     *)
3705         die "Unknown OS '$target_os'."
3706         ;;
3707 esac
3708
3709 # determine libc flavour
3710
3711 probe_libc(){
3712     pfx=