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

   1 #!/bin/sh
   2 #
   3 # Libav configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken Libav."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --prefix=PREFIX          install in PREFIX [$prefix]
  82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
  84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
  85   --libdir=DIR             install libs in DIR [PREFIX/lib]
  86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  87   --incdir=DIR             install includes in DIR [PREFIX/include]
  88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
  90
  91 Licensing options:
  92   --enable-gpl             allow use of GPL code, the resulting libs
  93                            and binaries will be under GPL [no]
  94   --enable-version3        upgrade (L)GPL to version 3 [no]
  95   --enable-nonfree         allow use of nonfree code, the resulting libs
  96                            and binaries will be unredistributable [no]
  97
  98 Configuration options:
  99   --disable-static         do not build static libraries [no]
 100   --enable-shared          build shared libraries [no]
 101   --enable-small           optimize for size instead of speed
 102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
 103   --enable-gray            enable full grayscale support (slower color)
 104   --disable-swscale-alpha  disable alpha channel support in swscale
 105   --disable-all            disable building components, libraries and programs
 106
 107 Program options:
 108   --disable-programs       do not build command line programs
 109   --disable-avconv         disable avconv build
 110   --disable-avplay         disable avplay build
 111   --disable-avprobe        disable avprobe build
 112   --disable-avserver       deprecated, does nothing
 113
 114 Component options:
 115   --disable-doc            do not build documentation
 116   --disable-avdevice       disable libavdevice build
 117   --disable-avcodec        disable libavcodec build
 118   --disable-avformat       disable libavformat build
 119   --disable-avutil         disable libavutil build
 120   --disable-swscale        disable libswscale build
 121   --disable-avfilter       disable video filter support [no]
 122   --disable-avresample     disable libavresample build [no]
 123   --disable-pthreads       disable pthreads [auto]
 124   --disable-w32threads     disable Win32 threads [auto]
 125   --disable-network        disable network support [no]
 126   --disable-dct            disable DCT code
 127   --disable-error-resilience disable error resilience code
 128   --disable-lsp            disable LSP code
 129   --disable-lzo            disable LZO decoder code
 130   --disable-mdct           disable MDCT code
 131   --disable-rdft           disable RDFT code
 132   --disable-fft            disable FFT code
 133   --disable-faan           disable floating point AAN (I)DCT code
 134
 135 Hardware accelerators:
 136   --enable-d3d11va         enable D3D11VA code
 137   --enable-dxva2           enable DXVA2 code
 138   --enable-vaapi           enable VAAPI code
 139   --enable-vda             enable VDA code
 140   --enable-vdpau           enable VDPAU code
 141
 142 Individual component options:
 143   --disable-everything     disable all components listed below
 144   --disable-encoder=NAME   disable encoder NAME
 145   --enable-encoder=NAME    enable encoder NAME
 146   --disable-encoders       disable all encoders
 147   --disable-decoder=NAME   disable decoder NAME
 148   --enable-decoder=NAME    enable decoder NAME
 149   --disable-decoders       disable all decoders
 150   --disable-hwaccel=NAME   disable hwaccel NAME
 151   --enable-hwaccel=NAME    enable hwaccel NAME
 152   --disable-hwaccels       disable all hwaccels
 153   --disable-muxer=NAME     disable muxer NAME
 154   --enable-muxer=NAME      enable muxer NAME
 155   --disable-muxers         disable all muxers
 156   --disable-demuxer=NAME   disable demuxer NAME
 157   --enable-demuxer=NAME    enable demuxer NAME
 158   --disable-demuxers       disable all demuxers
 159   --enable-parser=NAME     enable parser NAME
 160   --disable-parser=NAME    disable parser NAME
 161   --disable-parsers        disable all parsers
 162   --enable-bsf=NAME        enable bitstream filter NAME
 163   --disable-bsf=NAME       disable bitstream filter NAME
 164   --disable-bsfs           disable all bitstream filters
 165   --enable-protocol=NAME   enable protocol NAME
 166   --disable-protocol=NAME  disable protocol NAME
 167   --disable-protocols      disable all protocols
 168   --enable-indev=NAME      enable input device NAME
 169   --disable-indev=NAME     disable input device NAME
 170   --disable-indevs         disable input devices
 171   --enable-outdev=NAME     enable output device NAME
 172   --disable-outdev=NAME    disable output device NAME
 173   --disable-outdevs        disable output devices
 174   --disable-devices        disable all devices
 175   --enable-filter=NAME     enable filter NAME
 176   --disable-filter=NAME    disable filter NAME
 177   --disable-filters        disable all filters
 178
 179 External library support:
 180   --enable-avisynth        enable reading of AviSynth script files [no]
 181   --enable-bzlib           enable bzlib [autodetect]
 182   --enable-frei0r          enable frei0r video filtering
 183   --enable-gnutls          enable gnutls [no]
 184   --enable-libbs2b         enable bs2b DSP library [no]
 185   --enable-libcdio         enable audio CD grabbing with libcdio
 186   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 187                            and libraw1394 [no]
 188   --enable-libdcadec       enable DCA decoding via libdcadec [no]
 189   --enable-libfaac         enable AAC encoding via libfaac [no]
 190   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 191   --enable-libfreetype     enable libfreetype [no]
 192   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 193   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 194   --enable-libmfx          enable HW acceleration through libmfx
 195   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 196   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 197   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 198   --enable-libopencv       enable video filtering via libopencv [no]
 199   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 200   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 201   --enable-libopus         enable Opus de/encoding via libopus [no]
 202   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 203   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 204   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 205   --enable-libsnappy       enable Snappy compression [no]
 206   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 207   --enable-libtheora       enable Theora encoding via libtheora [no]
 208   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 209   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 210   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 211   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
 212   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 213   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 214   --enable-libwebp         enable WebP encoding via libwebp [no]
 215   --enable-libx264         enable H.264 encoding via x264 [no]
 216   --enable-libx265         enable HEVC encoding via x265 [no]
 217   --enable-libxavs         enable AVS encoding via xavs [no]
 218   --enable-libxcb          enable X11 grabbing using XCB [no]
 219   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
 220   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
 221   --enable-libxvid         enable Xvid encoding via xvidcore,
 222                            native MPEG-4/Xvid encoder exists [no]
 223   --enable-mmal            enable decoding via MMAL [no]
 224   --enable-nvenc           enable encoding via NVENC [no]
 225   --enable-openssl         enable openssl [no]
 226   --enable-x11grab         enable X11 grabbing (legacy) [no]
 227   --enable-zlib            enable zlib [autodetect]
 228
 229 Toolchain options:
 230   --arch=ARCH              select architecture [$arch]
 231   --cpu=CPU                select the minimum required CPU (affects
 232                            instruction selection, may crash on older CPUs)
 233   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 234   --enable-cross-compile   assume a cross-compiler is used
 235   --sysroot=PATH           root of cross-build tree
 236   --sysinclude=PATH        location of cross-build system headers
 237   --target-os=OS           compiler targets OS [$target_os]
 238   --target-exec=CMD        command to run executables on target
 239   --target-path=DIR        path to view of build directory on target
 240   --target-samples=DIR     path to samples directory on target
 241   --toolchain=NAME         set tool defaults according to NAME
 242   --nm=NM                  use nm tool
 243   --ar=AR                  use archive tool AR [$ar_default]
 244   --as=AS                  use assembler AS [$as_default]
 245   --cc=CC                  use C compiler CC [$cc_default]
 246   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 247   --ld=LD                  use linker LD
 248   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 249   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 250   --host-cc=HOSTCC         use host C compiler HOSTCC
 251   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 252   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 253   --host-ld=HOSTLD         use host linker HOSTLD
 254   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 255   --host-libs=HLIBS        use libs HLIBS when linking for host
 256   --host-os=OS             compiler host OS [$target_os]
 257   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 258   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 259   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 260   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 261   --extra-version=STRING   version string suffix []
 262   --optflags=OPTFLAGS      override optimization-related compiler flags
 263   --build-suffix=SUFFIX    library name suffix []
 264   --enable-pic             build position-independent code
 265   --enable-thumb           compile for Thumb instruction set
 266   --enable-lto             use link-time optimization
 267   --env="ENV=override"     override the environment variables
 268
 269 Advanced options (experts only):
 270   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 271   --disable-symver         disable symbol versioning
 272   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 273   --disable-safe-bitstream-reader
 274                            disable buffer boundary checking in bitreaders
 275                            (faster, but may crash)
 276   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 277   --enable-sram            allow use of on-chip SRAM
 278
 279 Optimization options (experts only):
 280   --disable-asm            disable all assembly optimizations
 281   --disable-altivec        disable AltiVec optimizations
 282   --disable-vsx            disable VSX optimizations
 283   --disable-power8         disable POWER8 optimizations
 284   --disable-amd3dnow       disable 3DNow! optimizations
 285   --disable-amd3dnowext    disable 3DNow! extended optimizations
 286   --disable-mmx            disable MMX optimizations
 287   --disable-mmxext         disable MMXEXT optimizations
 288   --disable-sse            disable SSE optimizations
 289   --disable-sse2           disable SSE2 optimizations
 290   --disable-sse3           disable SSE3 optimizations
 291   --disable-ssse3          disable SSSE3 optimizations
 292   --disable-sse4           disable SSE4 optimizations
 293   --disable-sse42          disable SSE4.2 optimizations
 294   --disable-avx            disable AVX optimizations
 295   --disable-xop            disable XOP optimizations
 296   --disable-fma3           disable FMA3 optimizations
 297   --disable-fma4           disable FMA4 optimizations
 298   --disable-avx2           disable AVX2 optimizations
 299   --disable-armv5te        disable armv5te optimizations
 300   --disable-armv6          disable armv6 optimizations
 301   --disable-armv6t2        disable armv6t2 optimizations
 302   --disable-vfp            disable VFP optimizations
 303   --disable-neon           disable NEON optimizations
 304   --disable-inline-asm     disable use of inline assembly
 305   --disable-yasm           disable use of nasm/yasm assembly
 306
 307 Developer options (useful when working on Libav itself):
 308   --disable-debug          disable debugging symbols
 309   --enable-debug=LEVEL     set the debug level [$debuglevel]
 310   --disable-optimizations  disable compiler optimizations
 311   --enable-extra-warnings  enable more compiler warnings
 312   --samples=PATH           location of test samples for FATE, if not set use
 313                            \$LIBAV_SAMPLES at make invocation time.
 314   --enable-neon-clobber-test check NEON registers for clobbering (should be
 315                            used only for debugging purposes)
 316   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 317                            should be used only for debugging purposes)
 318   --enable-random          randomly enable/disable components
 319   --disable-random
 320   --enable-random=LIST     randomly enable/disable specific components or
 321   --disable-random=LIST    component groups. LIST is a comma-separated list
 322                            of NAME[:PROB] entries where NAME is a component
 323                            (group) and PROB the probability associated with
 324                            NAME (default 0.5).
 325   --random-seed=VALUE      seed value for --enable/disable-random
 326   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 327                            (only applies to --disable-optimizations builds)
 328
 329 NOTE: Object files are built at the place where configure is launched.
 330 EOF
 331   exit 0
 332 }
 333
 334 quotes='""'
 335
 336 log(){
 337     echo "$@" >> $logfile
 338 }
 339
 340 log_file(){
 341     log BEGIN $1
 342     pr -n -t $1 >> $logfile
 343     log END $1
 344 }
 345
 346 echolog(){
 347     log "$@"
 348     echo "$@"
 349 }
 350
 351 warn(){
 352     log "WARNING: $*"
 353     WARNINGS="${WARNINGS}WARNING: $*\n"
 354 }
 355
 356 die(){
 357     echolog "$@"
 358     cat <<EOF
 359
 360 If you think configure made a mistake, make sure you are using the latest
 361 version from Git.  If the latest version fails, report the problem to the
 362 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 363 EOF
 364     if disabled logging; then
 365         cat <<EOF
 366 Rerun configure with logging enabled (do not use --disable-logging), and
 367 include the log this produces with your report.
 368 EOF
 369     else
 370         cat <<EOF
 371 Include the log file "$logfile" produced by configure as this will help
 372 solving the problem.
 373 EOF
 374     fi
 375     exit 1
 376 }
 377
 378 # Avoid locale weirdness, besides we really just want to translate ASCII.
 379 toupper(){
 380     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 381 }
 382
 383 tolower(){
 384     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 385 }
 386
 387 c_escape(){
 388     echo "$*" | sed 's/["\\]/\\\0/g'
 389 }
 390
 391 sh_quote(){
 392     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 393     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 394     echo "$v"
 395 }
 396
 397 cleanws(){
 398     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 399 }
 400
 401 filter(){
 402     pat=$1
 403     shift
 404     for v; do
 405         eval "case $v in $pat) echo $v ;; esac"
 406     done
 407 }
 408
 409 filter_out(){
 410     pat=$1
 411     shift
 412     for v; do
 413         eval "case $v in $pat) ;; *) echo $v ;; esac"
 414     done
 415 }
 416
 417 map(){
 418     m=$1
 419     shift
 420     for v; do eval $m; done
 421 }
 422
 423 add_suffix(){
 424     suffix=$1
 425     shift
 426     for v; do echo ${v}${suffix}; done
 427 }
 428
 429 set_all(){
 430     value=$1
 431     shift
 432     for var in $*; do
 433         eval $var=$value
 434     done
 435 }
 436
 437 set_weak(){
 438     value=$1
 439     shift
 440     for var; do
 441         eval : \${$var:=$value}
 442     done
 443 }
 444
 445 sanitize_var_name(){
 446     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 447 }
 448
 449 set_safe(){
 450     var=$1
 451     shift
 452     eval $(sanitize_var_name "$var")='$*'
 453 }
 454
 455 get_safe(){
 456     eval echo \$$(sanitize_var_name "$1")
 457 }
 458
 459 pushvar(){
 460     for pvar in $*; do
 461         eval level=\${${pvar}_level:=0}
 462         eval ${pvar}_${level}="\$$pvar"
 463         eval ${pvar}_level=$(($level+1))
 464     done
 465 }
 466
 467 popvar(){
 468     for pvar in $*; do
 469         eval level=\${${pvar}_level:-0}
 470         test $level = 0 && continue
 471         eval level=$(($level-1))
 472         eval $pvar="\${${pvar}_${level}}"
 473         eval ${pvar}_level=$level
 474         eval unset ${pvar}_${level}
 475     done
 476 }
 477
 478 enable(){
 479     set_all yes $*
 480 }
 481
 482 disable(){
 483     set_all no $*
 484 }
 485
 486 enable_weak(){
 487     set_weak yes $*
 488 }
 489
 490 disable_weak(){
 491     set_weak no $*
 492 }
 493
 494 enable_safe(){
 495     for var; do
 496         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 497     done
 498 }
 499
 500 disable_safe(){
 501     for var; do
 502         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 503     done
 504 }
 505
 506 do_enable_deep(){
 507     for var; do
 508         enabled $var && continue
 509         eval sel="\$${var}_select"
 510         eval sgs="\$${var}_suggest"
 511         pushvar var sgs
 512         enable_deep $sel
 513         popvar sgs
 514         enable_deep_weak $sgs
 515         popvar var
 516     done
 517 }
 518
 519 enable_deep(){
 520     do_enable_deep $*
 521     enable $*
 522 }
 523
 524 enable_deep_weak(){
 525     for var; do
 526         disabled $var && continue
 527         pushvar var
 528         do_enable_deep $var
 529         popvar var
 530         enable_weak $var
 531     done
 532 }
 533
 534 enabled(){
 535     test "${1#!}" = "$1" && op== || op=!=
 536     eval test "x\$${1#!}" $op "xyes"
 537 }
 538
 539 disabled(){
 540     test "${1#!}" = "$1" && op== || op=!=
 541     eval test "x\$${1#!}" $op "xno"
 542 }
 543
 544 enabled_all(){
 545     for opt; do
 546         enabled $opt || return 1
 547     done
 548 }
 549
 550 disabled_all(){
 551     for opt; do
 552         disabled $opt || return 1
 553     done
 554 }
 555
 556 enabled_any(){
 557     for opt; do
 558         enabled $opt && return 0
 559     done
 560 }
 561
 562 disabled_any(){
 563     for opt; do
 564         disabled $opt && return 0
 565     done
 566     return 1
 567 }
 568
 569 set_default(){
 570     for opt; do
 571         eval : \${$opt:=\$${opt}_default}
 572     done
 573 }
 574
 575 is_in(){
 576     value=$1
 577     shift
 578     for var in $*; do
 579         [ $var = $value ] && return 0
 580     done
 581     return 1
 582 }
 583
 584 do_check_deps(){
 585     for cfg; do
 586         cfg="${cfg#!}"
 587         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 588         disabled ${cfg}_checking && continue
 589         enable ${cfg}_checking
 590         append allopts $cfg
 591
 592         eval dep_all="\$${cfg}_deps"
 593         eval dep_any="\$${cfg}_deps_any"
 594         eval dep_sel="\$${cfg}_select"
 595         eval dep_sgs="\$${cfg}_suggest"
 596         eval dep_ifa="\$${cfg}_if"
 597         eval dep_ifn="\$${cfg}_if_any"
 598
 599         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 600         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 601         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 602
 603         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 604         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 605         enabled_all  $dep_all || disable $cfg
 606         enabled_any  $dep_any || disable $cfg
 607         disabled_any $dep_sel && disable $cfg
 608
 609         if enabled $cfg; then
 610             enable_deep $dep_sel
 611             enable_deep_weak $dep_sgs
 612         fi
 613
 614         disable ${cfg}_checking
 615     done
 616 }
 617
 618 check_deps(){
 619     unset allopts
 620
 621     do_check_deps "$@"
 622
 623     for cfg in $allopts; do
 624         enabled $cfg || continue
 625         eval dep_extralibs="\$${cfg}_extralibs"
 626         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 627     done
 628 }
 629
 630 print_config(){
 631     pfx=$1
 632     files=$2
 633     shift 2
 634     map 'eval echo "$v \${$v:-no}"' "$@" |
 635     awk "BEGIN { split(\"$files\", files) }
 636         {
 637             c = \"$pfx\" toupper(\$1);
 638             v = \$2;
 639             sub(/yes/, 1, v);
 640             sub(/no/,  0, v);
 641             for (f in files) {
 642                 file = files[f];
 643                 if (file ~ /\\.h\$/) {
 644                     printf(\"#define %s %d\\n\", c, v) >>file;
 645                 } else if (file ~ /\\.asm\$/) {
 646                     printf(\"%%define %s %d\\n\", c, v) >>file;
 647                 } else if (file ~ /\\.mak\$/) {
 648                     n = -v ? \"\" : \"!\";
 649                     printf(\"%s%s=yes\\n\", n, c) >>file;
 650                 }
 651             }
 652         }"
 653 }
 654
 655 print_enabled(){
 656     suf=$1
 657     shift
 658     for v; do
 659         enabled $v && printf "%s\n" ${v%$suf};
 660     done
 661 }
 662
 663 append(){
 664     var=$1
 665     shift
 666     eval "$var=\"\$$var $*\""
 667 }
 668
 669 prepend(){
 670     var=$1
 671     shift
 672     eval "$var=\"$* \$$var\""
 673 }
 674
 675 unique(){
 676     var=$1
 677     uniq_list=""
 678     for tok in $(eval echo \$$var); do
 679         uniq_list="$(filter_out $tok $uniq_list) $tok"
 680     done
 681     eval "$var=\"${uniq_list}\""
 682 }
 683
 684 add_cppflags(){
 685     append CPPFLAGS "$@"
 686 }
 687
 688 add_cflags(){
 689     append CFLAGS $($cflags_filter "$@")
 690 }
 691
 692 add_asflags(){
 693     append ASFLAGS $($asflags_filter "$@")
 694 }
 695
 696 add_ldflags(){
 697     append LDFLAGS $($ldflags_filter "$@")
 698 }
 699
 700 add_ldexeflags(){
 701     append LDEXEFLAGS $($ldflags_filter "$@")
 702 }
 703
 704 add_stripflags(){
 705     append STRIPFLAGS "$@"
 706 }
 707
 708 add_extralibs(){
 709     prepend extralibs $($ldflags_filter "$@")
 710 }
 711
 712 add_host_cppflags(){
 713     append host_cppflags "$@"
 714 }
 715
 716 add_host_cflags(){
 717     append host_cflags $($host_cflags_filter "$@")
 718 }
 719
 720 add_host_ldflags(){
 721     append host_ldflags $($host_ldflags_filter "$@")
 722 }
 723
 724 add_compat(){
 725     append compat_objs $1
 726     shift
 727     map 'add_cppflags -D$v' "$@"
 728 }
 729
 730 check_cmd(){
 731     log "$@"
 732     "$@" >> $logfile 2>&1
 733 }
 734
 735 cc_o(){
 736     eval printf '%s\\n' $CC_O
 737 }
 738
 739 cc_e(){
 740     eval printf '%s\\n' $CC_E
 741 }
 742
 743 check_cc(){
 744     log check_cc "$@"
 745     cat > $TMPC
 746     log_file $TMPC
 747     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 748 }
 749
 750 check_cpp(){
 751     log check_cpp "$@"
 752     cat > $TMPC
 753     log_file $TMPC
 754     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 755 }
 756
 757 as_o(){
 758     eval printf '%s\\n' $AS_O
 759 }
 760
 761 check_as(){
 762     log check_as "$@"
 763     cat > $TMPS
 764     log_file $TMPS
 765     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 766 }
 767
 768 check_inline_asm(){
 769     log check_inline_asm "$@"
 770     name="$1"
 771     code="$2"
 772     shift 2
 773     disable $name
 774     check_cc "$@" <<EOF && enable $name
 775 void foo(void){ __asm__ volatile($code); }
 776 EOF
 777 }
 778
 779 check_insn(){
 780     log check_insn "$@"
 781     check_inline_asm ${1}_inline "\"$2\""
 782     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 783 }
 784
 785 check_yasm(){
 786     log check_yasm "$@"
 787     echo "$1" > $TMPS
 788     log_file $TMPS
 789     shift 1
 790     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 791 }
 792
 793 ld_o(){
 794     eval printf '%s\\n' $LD_O
 795 }
 796
 797 check_ld(){
 798     log check_ld "$@"
 799     flags=$(filter_out '-l*' "$@")
 800     libs=$(filter '-l*' "$@")
 801     check_cc $($cflags_filter $flags) || return
 802     flags=$($ldflags_filter $flags)
 803     libs=$($ldflags_filter $libs)
 804     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 805 }
 806
 807 print_include(){
 808     hdr=$1
 809     test "${hdr%.h}" = "${hdr}" &&
 810         echo "#include $hdr"    ||
 811         echo "#include <$hdr>"
 812 }
 813
 814 check_code(){
 815     log check_code "$@"
 816     check=$1
 817     headers=$2
 818     code=$3
 819     shift 3
 820     {
 821         for hdr in $headers; do
 822             print_include $hdr
 823         done
 824         echo "int main(void) { $code; return 0; }"
 825     } | check_$check "$@"
 826 }
 827
 828 check_cppflags(){
 829     log check_cppflags "$@"
 830     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 831 int x;
 832 EOF
 833 }
 834
 835 test_cflags(){
 836     log test_cflags "$@"
 837     set -- $($cflags_filter "$@")
 838     check_cc "$@" <<EOF
 839 int x;
 840 EOF
 841 }
 842
 843 check_cflags(){
 844     log check_cflags "$@"
 845     test_cflags "$@" && add_cflags "$@"
 846 }
 847
 848 test_ldflags(){
 849     log test_ldflags "$@"
 850     check_ld "$@" <<EOF
 851 int main(void){ return 0; }
 852 EOF
 853 }
 854
 855 check_ldflags(){
 856     log check_ldflags "$@"
 857     test_ldflags "$@" && add_ldflags "$@"
 858 }
 859
 860 test_stripflags(){
 861     log test_stripflags "$@"
 862     # call check_cc to get a fresh TMPO
 863     check_cc <<EOF
 864 int main(void) { return 0; }
 865 EOF
 866     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 867 }
 868
 869 check_stripflags(){
 870     log check_stripflags "$@"
 871     test_stripflags "$@" && add_stripflags "$@"
 872 }
 873
 874 check_header(){
 875     log check_header "$@"
 876     header=$1
 877     shift
 878     disable_safe $header
 879     check_cpp "$@" <<EOF && enable_safe $header
 880 #include <$header>
 881 int x;
 882 EOF
 883 }
 884
 885 check_func(){
 886     log check_func "$@"
 887     func=$1
 888     shift
 889     disable $func
 890     check_ld "$@" <<EOF && enable $func
 891 extern int $func();
 892 int main(void){ $func(); }
 893 EOF
 894 }
 895
 896 check_mathfunc(){
 897     log check_mathfunc "$@"
 898     func=$1
 899     narg=$2
 900     shift 2
 901     test $narg = 2 && args="f, g" || args="f"
 902     disable $func
 903     check_ld "$@" <<EOF && enable $func
 904 #include <math.h>
 905 float foo(float f, float g) { return $func($args); }
 906 int main(void){ return 0; }
 907 EOF
 908 }
 909
 910 check_func_headers(){
 911     log check_func_headers "$@"
 912     headers=$1
 913     funcs=$2
 914     shift 2
 915     {
 916         for hdr in $headers; do
 917             print_include $hdr
 918         done
 919         for func in $funcs; do
 920             echo "long check_$func(void) { return (long) $func; }"
 921         done
 922         echo "int main(void) { return 0; }"
 923     } | check_ld "$@" && enable $funcs && enable_safe $headers
 924 }
 925
 926 check_cpp_condition(){
 927     log check_cpp_condition "$@"
 928     header=$1
 929     condition=$2
 930     shift 2
 931     check_cpp "$@" <<EOF
 932 #include <$header>
 933 #if !($condition)
 934 #error "unsatisfied condition: $condition"
 935 #endif
 936 EOF
 937 }
 938
 939 check_lib(){
 940     log check_lib "$@"
 941     header="$1"
 942     func="$2"
 943     shift 2
 944     check_header $header && check_func $func "$@" && add_extralibs "$@"
 945 }
 946
 947 check_lib2(){
 948     log check_lib2 "$@"
 949     headers="$1"
 950     funcs="$2"
 951     shift 2
 952     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
 953 }
 954
 955 check_pkg_config(){
 956     log check_pkg_config "$@"
 957     pkg="$1"
 958     headers="$2"
 959     funcs="$3"
 960     shift 3
 961     check_cmd $pkg_config --exists --print-errors $pkg || return
 962     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
 963     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
 964     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
 965         set_safe "${pkg}_cflags" $pkg_cflags   &&
 966         set_safe "${pkg}_libs"   $pkg_libs
 967 }
 968
 969 check_exec(){
 970     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
 971 }
 972
 973 check_exec_crash(){
 974     code=$(cat)
 975
 976     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
 977     # are safe but may not be available everywhere.  Thus we use
 978     # raise(SIGTERM) instead.  The check is run in a subshell so we
 979     # can redirect the "Terminated" message from the shell.  SIGBUS
 980     # is not defined by standard C so it is used conditionally.
 981
 982     (check_exec "$@") >> $logfile 2>&1 <<EOF
 983 #include <signal.h>
 984 static void sighandler(int sig){
 985     raise(SIGTERM);
 986 }
 987 int foo(void){
 988     $code
 989 }
 990 int (*func_ptr)(void) = foo;
 991 int main(void){
 992     signal(SIGILL, sighandler);
 993     signal(SIGFPE, sighandler);
 994     signal(SIGSEGV, sighandler);
 995 #ifdef SIGBUS
 996     signal(SIGBUS, sighandler);
 997 #endif
 998     return func_ptr();
 999 }
1000 EOF
1001 }
1002
1003 check_type(){
1004     log check_type "$@"
1005     headers=$1
1006     type=$2
1007     shift 2
1008     disable_safe "$type"
1009     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1010 }
1011
1012 check_struct(){
1013     log check_struct "$@"
1014     headers=$1
1015     struct=$2
1016     member=$3
1017     shift 3
1018     disable_safe "${struct}_${member}"
1019     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1020         enable_safe "${struct}_${member}"
1021 }
1022
1023 check_builtin(){
1024     log check_builtin "$@"
1025     name=$1
1026     headers=$2
1027     builtin=$3
1028     shift 3
1029     disable "$name"
1030     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1031 }
1032
1033 check_compile_assert(){
1034     log check_compile_assert "$@"
1035     name=$1
1036     headers=$2
1037     condition=$3
1038     shift 3
1039     disable "$name"
1040     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1041 }
1042
1043 require(){
1044     name="$1"
1045     header="$2"
1046     func="$3"
1047     shift 3
1048     check_lib $header $func "$@" || die "ERROR: $name not found"
1049 }
1050
1051 require2(){
1052     name="$1"
1053     headers="$2"
1054     func="$3"
1055     shift 3
1056     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1057 }
1058
1059 require_pkg_config(){
1060     pkg="$1"
1061     check_pkg_config "$@" || die "ERROR: $pkg not found"
1062     add_cflags    $(get_safe "${pkg}_cflags")
1063     add_extralibs $(get_safe "${pkg}_libs")
1064 }
1065
1066 hostcc_e(){
1067     eval printf '%s\\n' $HOSTCC_E
1068 }
1069
1070 hostcc_o(){
1071     eval printf '%s\\n' $HOSTCC_O
1072 }
1073
1074 check_host_cc(){
1075     log check_host_cc "$@"
1076     cat > $TMPC
1077     log_file $TMPC
1078     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1079 }
1080
1081 check_host_cpp(){
1082     log check_host_cpp "$@"
1083     cat > $TMPC
1084     log_file $TMPC
1085     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1086 }
1087
1088 check_host_cppflags(){
1089     log check_host_cppflags "$@"
1090     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1091 int x;
1092 EOF
1093 }
1094
1095 check_host_cflags(){
1096     log check_host_cflags "$@"
1097     set -- $($host_cflags_filter "$@")
1098     check_host_cc "$@" <<EOF && append host_cflags "$@"
1099 int x;
1100 EOF
1101 }
1102
1103 check_host_cpp_condition(){
1104     log check_host_cpp_condition "$@"
1105     header=$1
1106     condition=$2
1107     shift 2
1108     check_host_cpp "$@" <<EOF
1109 #include <$header>
1110 #if !($condition)
1111 #error "unsatisfied condition: $condition"
1112 #endif
1113 EOF
1114 }
1115
1116 apply(){
1117     file=$1
1118     shift
1119     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1120 }
1121
1122 cp_if_changed(){
1123     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1124     mkdir -p "$(dirname $2)"
1125     $cp_f "$1" "$2"
1126 }
1127
1128 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1129 # system-dependent things.
1130
1131 COMPONENT_LIST="
1132     bsfs
1133     decoders
1134     demuxers
1135     encoders
1136     filters
1137     hwaccels
1138     indevs
1139     muxers
1140     outdevs
1141     parsers
1142     protocols
1143 "
1144
1145 EXAMPLE_LIST="
1146     avcodec_example
1147     filter_audio_example
1148     metadata_example
1149     output_example
1150     qsvdec_example
1151     transcode_aac_example
1152 "
1153
1154 EXTERNAL_LIBRARY_LIST="
1155     avisynth
1156     bzlib
1157     frei0r
1158     gnutls
1159     libbs2b
1160     libcdio
1161     libdc1394
1162     libdcadec
1163     libfaac
1164     libfdk_aac
1165     libfontconfig
1166     libfreetype
1167     libgsm
1168     libilbc
1169     libmfx
1170     libmp3lame
1171     libopencore_amrnb
1172     libopencore_amrwb
1173     libopencv
1174     libopenh264
1175     libopenjpeg
1176     libopus
1177     libpulse
1178     librtmp
1179     libschroedinger
1180     libsnappy
1181     libspeex
1182     libtheora
1183     libtwolame
1184     libvo_aacenc
1185     libvo_amrwbenc
1186     libvorbis
1187     libvpx
1188     libwavpack
1189     libwebp
1190     libx264
1191     libx265
1192     libxavs
1193     libxcb
1194     libxcb_shm
1195     libxcb_xfixes
1196     libxvid
1197     mmal
1198     nvenc
1199     openssl
1200     x11grab
1201     zlib
1202 "
1203
1204 FEATURE_LIST="
1205     gray
1206     hardcoded_tables
1207     runtime_cpudetect
1208     safe_bitstream_reader
1209     shared
1210     small
1211     sram
1212     static
1213     swscale_alpha
1214 "
1215
1216 HWACCEL_LIST="
1217     d3d11va
1218     dxva2
1219     vaapi
1220     vda
1221     vdpau
1222 "
1223
1224 LIBRARY_LIST="
1225     avcodec
1226     avdevice
1227     avfilter
1228     avformat
1229     avresample
1230     avutil
1231     swscale
1232 "
1233
1234 LICENSE_LIST="
1235     gpl
1236     nonfree
1237     version3
1238 "
1239
1240 PROGRAM_LIST="
1241     avconv
1242     avplay
1243     avprobe
1244 "
1245
1246 SUBSYSTEM_LIST="
1247     dct
1248     doc
1249     error_resilience
1250     faan
1251     fft
1252     lsp
1253     lzo
1254     mdct
1255     network
1256     rdft
1257 "
1258
1259 CONFIG_LIST="
1260     $COMPONENT_LIST
1261     $EXAMPLE_LIST
1262     $EXTERNAL_LIBRARY_LIST
1263     $FEATURE_LIST
1264     $HWACCEL_LIST
1265     $LICENSE_LIST
1266     $LIBRARY_LIST
1267     $PROGRAM_LIST
1268     $SUBSYSTEM_LIST
1269     memalign_hack
1270     neon_clobber_test
1271     pic
1272     pod2man
1273     texi2html
1274     thumb
1275     valgrind_backtrace
1276     xmm_clobber_test
1277 "
1278
1279 THREADS_LIST="
1280     pthreads
1281     w32threads
1282 "
1283
1284 ATOMICS_LIST="
1285     atomics_gcc
1286     atomics_suncc
1287     atomics_win32
1288 "
1289
1290 ARCH_LIST="
1291     aarch64
1292     alpha
1293     arm
1294     avr32
1295     avr32_ap
1296     avr32_uc
1297     bfin
1298     ia64
1299     m68k
1300     mips
1301     mips64
1302     parisc
1303     ppc
1304     ppc64
1305     s390
1306     sh4
1307     sparc
1308     sparc64
1309     tilegx
1310     tilepro
1311     tomi
1312     x86
1313     x86_32
1314     x86_64
1315 "
1316
1317 ARCH_EXT_LIST_ARM="
1318     armv5te
1319     armv6
1320     armv6t2
1321     armv8
1322     neon
1323     vfp
1324     vfpv3
1325 "
1326
1327 ARCH_EXT_LIST_X86_SIMD="
1328     amd3dnow
1329     amd3dnowext
1330     avx
1331     avx2
1332     fma3
1333     fma4
1334     mmx
1335     mmxext
1336     sse
1337     sse2
1338     sse3
1339     sse4
1340     sse42
1341     ssse3
1342     xop
1343 "
1344
1345 ARCH_EXT_LIST_PPC="
1346     altivec
1347     dcbzl
1348     ldbrx
1349     power8
1350     ppc4xx
1351     vsx
1352 "
1353
1354 ARCH_EXT_LIST_X86="
1355     $ARCH_EXT_LIST_X86_SIMD
1356     cpunop
1357     i686
1358 "
1359
1360 ARCH_EXT_LIST="
1361     $ARCH_EXT_LIST_ARM
1362     $ARCH_EXT_LIST_PPC
1363     $ARCH_EXT_LIST_X86
1364     loongson
1365     vis
1366 "
1367
1368 ARCH_FEATURES="
1369     aligned_stack
1370     fast_64bit
1371     fast_clz
1372     fast_cmov
1373     local_aligned_8
1374     local_aligned_16
1375     simd_align_16
1376 "
1377
1378 BUILTIN_LIST="
1379     atomic_cas_ptr
1380     machine_rw_barrier
1381     MemoryBarrier
1382     mm_empty
1383     rdtsc
1384     sync_val_compare_and_swap
1385 "
1386 HAVE_LIST_CMDLINE="
1387     inline_asm
1388     symver
1389     yasm
1390 "
1391
1392 HAVE_LIST_PUB="
1393     bigendian
1394     fast_unaligned
1395 "
1396
1397 HEADERS_LIST="
1398     alsa_asoundlib_h
1399     altivec_h
1400     arpa_inet_h
1401     cdio_paranoia_h
1402     cdio_paranoia_paranoia_h
1403     dev_bktr_ioctl_bt848_h
1404     dev_bktr_ioctl_meteor_h
1405     dev_ic_bt8xx_h
1406     dev_video_bktr_ioctl_bt848_h
1407     dev_video_meteor_ioctl_meteor_h
1408     direct_h
1409     dlfcn_h
1410     d3d11_h
1411     dxva_h
1412     gsm_h
1413     io_h
1414     mach_mach_time_h
1415     machine_ioctl_bt848_h
1416     machine_ioctl_meteor_h
1417     malloc_h
1418     poll_h
1419     sndio_h
1420     soundcard_h
1421     sys_mman_h
1422     sys_param_h
1423     sys_resource_h
1424     sys_select_h
1425     sys_soundcard_h
1426     sys_time_h
1427     sys_un_h
1428     sys_videoio_h
1429     unistd_h
1430     valgrind_valgrind_h
1431     windows_h
1432     winsock2_h
1433 "
1434
1435 INTRINSICS_LIST="
1436     intrinsics_neon
1437 "
1438
1439 MATH_FUNCS="
1440     atanf
1441     atan2f
1442     cbrtf
1443     cosf
1444     exp2
1445     exp2f
1446     expf
1447     isinf
1448     isnan
1449     ldexpf
1450     llrint
1451     llrintf
1452     log2
1453     log2f
1454     log10f
1455     lrint
1456     lrintf
1457     powf
1458     rint
1459     round
1460     roundf
1461     sinf
1462     trunc
1463     truncf
1464 "
1465
1466 SYSTEM_FUNCS="
1467     aligned_malloc
1468     clock_gettime
1469     closesocket
1470     CommandLineToArgvW
1471     CoTaskMemFree
1472     CryptGenRandom
1473     dlopen
1474     fcntl
1475     flt_lim
1476     fork
1477     getaddrinfo
1478     gethrtime
1479     getopt
1480     GetProcessAffinityMask
1481     GetProcessMemoryInfo
1482     GetProcessTimes
1483     getrusage
1484     getservbyport
1485     GetSystemTimeAsFileTime
1486     gettimeofday
1487     gmtime_r
1488     inet_aton
1489     isatty
1490     jack_port_get_latency_range
1491     LoadLibrary
1492     localtime_r
1493     mach_absolute_time
1494     MapViewOfFile
1495     memalign
1496     mkstemp
1497     mmap
1498     mprotect
1499     nanosleep
1500     posix_memalign
1501     sched_getaffinity
1502     SetConsoleTextAttribute
1503     setmode
1504     setrlimit
1505     Sleep
1506     strerror_r
1507     sysconf
1508     sysctl
1509     usleep
1510     VirtualAlloc
1511 "
1512
1513 TOOLCHAIN_FEATURES="
1514     as_dn_directive
1515     as_func
1516     as_object_arch
1517     asm_mod_q
1518     attribute_may_alias
1519     attribute_packed
1520     ebp_available
1521     ebx_available
1522     gnu_as
1523     ibm_asm
1524     inline_asm_labels
1525     pragma_deprecated
1526     symver_asm_label
1527     symver_gnu_asm
1528     vfp_args
1529     xform_asm
1530     xmm_clobbers
1531 "
1532
1533 TYPES_LIST="
1534     CONDITION_VARIABLE_Ptr
1535     socklen_t
1536     struct_addrinfo
1537     struct_group_source_req
1538     struct_ip_mreq_source
1539     struct_ipv6_mreq
1540     struct_pollfd
1541     struct_rusage_ru_maxrss
1542     struct_sockaddr_in6
1543     struct_sockaddr_sa_len
1544     struct_sockaddr_storage
1545     struct_v4l2_frmivalenum_discrete
1546 "
1547
1548 HAVE_LIST="
1549     $ARCH_EXT_LIST
1550     $(add_suffix _external $ARCH_EXT_LIST)
1551     $(add_suffix _inline   $ARCH_EXT_LIST)
1552     $ARCH_FEATURES
1553     $ATOMICS_LIST
1554     $BUILTIN_LIST
1555     $HAVE_LIST_CMDLINE
1556     $HAVE_LIST_PUB
1557     $HEADERS_LIST
1558     $INTRINSICS_LIST
1559     $MATH_FUNCS
1560     $SYSTEM_FUNCS
1561     $THREADS_LIST
1562     $TOOLCHAIN_FEATURES
1563     $TYPES_LIST
1564     atomics_native
1565     dos_paths
1566     dxva2_lib
1567     libc_msvcrt
1568     libdc1394_1
1569     libdc1394_2
1570     sdl
1571     section_data_rel_ro
1572     threads
1573     vaapi_x11
1574     vdpau_x11
1575     xlib
1576 "
1577
1578 # options emitted with CONFIG_ prefix but not available on the command line
1579 CONFIG_EXTRA="
1580     aandcttables
1581     ac3dsp
1582     audio_frame_queue
1583     audiodsp
1584     blockdsp
1585     bswapdsp
1586     cabac
1587     dvprofile
1588     faandct
1589     faanidct
1590     fdctdsp
1591     flacdsp
1592     fmtconvert
1593     g722dsp
1594     gcrypt
1595     gmp
1596     golomb
1597     gplv3
1598     h263dsp
1599     h264chroma
1600     h264dsp
1601     h264pred
1602     h264qpel
1603     hpeldsp
1604     huffman
1605     huffyuvdsp
1606     huffyuvencdsp
1607     idctdsp
1608     iirfilter
1609     imdct15
1610     intrax8
1611     ividsp
1612     jpegtables
1613     libx262
1614     lgplv3
1615     lpc
1616     me_cmp
1617     mpeg_er
1618     mpegaudio
1619     mpegaudiodsp
1620     mpegvideo
1621     mpegvideoenc
1622     mss34dsp
1623     pixblockdsp
1624     qpeldsp
1625     qsv
1626     qsvdec
1627     qsvenc
1628     rangecoder
1629     riffdec
1630     riffenc
1631     rtpdec
1632     rtpenc_chain
1633     rv34dsp
1634     sinewin
1635     snappy
1636     startcode
1637     texturedsp
1638     texturedspenc
1639     tpeldsp
1640     videodsp
1641     vp3dsp
1642     vp56dsp
1643     vp8dsp
1644     wma_freqs
1645     wmv2dsp
1646 "
1647
1648 CMDLINE_SELECT="
1649     $ARCH_EXT_LIST
1650     $CONFIG_LIST
1651     $HAVE_LIST_CMDLINE
1652     $THREADS_LIST
1653     asm
1654     cross_compile
1655     debug
1656     extra_warnings
1657     logging
1658     lto
1659     optimizations
1660     rpath
1661 "
1662
1663 PATHS_LIST="
1664     bindir
1665     datadir
1666     docdir
1667     incdir
1668     libdir
1669     mandir
1670     prefix
1671     shlibdir
1672 "
1673
1674 CMDLINE_SET="
1675     $PATHS_LIST
1676     ar
1677     arch
1678     as
1679     build_suffix
1680     cc
1681     cpu
1682     cross_prefix
1683     dep_cc
1684     env
1685     extra_version
1686     host_cc
1687     host_cflags
1688     host_ld
1689     host_ldflags
1690     host_libs
1691     host_os
1692     ld
1693     logfile
1694     malloc_prefix
1695     nm
1696     optflags
1697     pkg_config
1698     pkg_config_flags
1699     random_seed
1700     samples
1701     sysinclude
1702     sysroot
1703     target_exec
1704     target_os
1705     target_path
1706     target_samples
1707     toolchain
1708 "
1709
1710 CMDLINE_APPEND="
1711     extra_cflags
1712     host_cppflags
1713 "
1714
1715 # code dependency declarations
1716
1717 # architecture extensions
1718
1719 armv5te_deps="arm"
1720 armv6_deps="arm"
1721 armv6t2_deps="arm"
1722 armv8_deps="aarch64"
1723 neon_deps_any="aarch64 arm"
1724 intrinsics_neon_deps="neon"
1725 vfp_deps_any="aarch64 arm"
1726 vfpv3_deps="vfp"
1727
1728 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1729
1730 altivec_deps="ppc"
1731 ppc4xx_deps="ppc"
1732 vsx_deps="altivec"
1733 power8_deps="vsx"
1734
1735 cpunop_deps="i686"
1736 x86_64_select="i686"
1737 x86_64_suggest="fast_cmov"
1738
1739 amd3dnow_deps="mmx"
1740 amd3dnowext_deps="amd3dnow"
1741 i686_deps="x86"
1742 mmx_deps="x86"
1743 mmxext_deps="mmx"
1744 sse_deps="mmxext"
1745 sse2_deps="sse"
1746 sse3_deps="sse2"
1747 ssse3_deps="sse3"
1748 sse4_deps="ssse3"
1749 sse42_deps="sse4"
1750 avx_deps="sse42"
1751 xop_deps="avx"
1752 fma3_deps="avx"
1753 fma4_deps="avx"
1754 avx2_deps="avx"
1755
1756 mmx_external_deps="yasm"
1757 mmx_inline_deps="inline_asm"
1758 mmx_suggest="mmx_external mmx_inline"
1759
1760 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1761     eval dep=\$${ext}_deps
1762     eval ${ext}_external_deps='"${dep}_external"'
1763     eval ${ext}_inline_deps='"${dep}_inline"'
1764     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1765 done
1766
1767 aligned_stack_if_any="aarch64 ppc x86"
1768 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1769 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1770 fast_unaligned_if_any="aarch64 ppc x86"
1771 simd_align_16_if_any="altivec neon sse"
1772
1773 # system capabilities
1774 symver_if_any="symver_asm_label symver_gnu_asm"
1775 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1776
1777 # threading support
1778 atomics_gcc_if="sync_val_compare_and_swap"
1779 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1780 atomics_win32_if="MemoryBarrier"
1781 atomics_native_if_any="$ATOMICS_LIST"
1782 w32threads_deps="atomics_native"
1783 threads_if_any="$THREADS_LIST"
1784
1785 # subsystems
1786 dct_select="rdft"
1787 error_resilience_select="me_cmp"
1788 faandct_deps="faan fdctdsp"
1789 faanidct_deps="faan idctdsp"
1790 intrax8_select="error_resilience"
1791 mdct_select="fft"
1792 rdft_select="fft"
1793 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1794 mpeg_er_select="error_resilience"
1795 mpegaudio_select="mpegaudiodsp"
1796 mpegaudiodsp_select="dct"
1797 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1798 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1799 nvenc_deps_any="dlopen LoadLibrary"
1800 nvenc_extralibs='$ldl'
1801 qsvdec_select="qsv"
1802 qsvenc_select="qsv"
1803
1804 # decoders / encoders
1805 aac_decoder_select="imdct15 mdct sinewin"
1806 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1807 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1808 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1809 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1810 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1811 adpcm_g722_decoder_select="g722dsp"
1812 adpcm_g722_encoder_select="g722dsp"
1813 aic_decoder_select="golomb idctdsp"
1814 alac_encoder_select="lpc"
1815 als_decoder_select="bswapdsp"
1816 amrnb_decoder_select="lsp"
1817 amrwb_decoder_select="lsp"
1818 amv_decoder_select="sp5x_decoder"
1819 ape_decoder_select="bswapdsp"
1820 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1821 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1822 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1823 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1824 atrac1_decoder_select="mdct sinewin"
1825 atrac3_decoder_select="mdct"
1826 atrac3p_decoder_select="mdct sinewin"
1827 bink_decoder_select="blockdsp hpeldsp"
1828 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1829 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1830 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1831 cllc_decoder_select="bswapdsp"
1832 comfortnoise_encoder_select="lpc"
1833 cook_decoder_select="audiodsp mdct sinewin"
1834 cscd_decoder_select="lzo"
1835 cscd_decoder_suggest="zlib"
1836 dca_decoder_select="fmtconvert mdct"
1837 dds_decoder_select="texturedsp"
1838 dnxhd_decoder_select="blockdsp idctdsp"
1839 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1840 dvvideo_decoder_select="dvprofile idctdsp"
1841 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1842 dxa_decoder_deps="zlib"
1843 eac3_decoder_select="ac3_decoder"
1844 eac3_encoder_select="ac3_encoder"
1845 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1846 eatgq_decoder_select="aandcttables idctdsp"
1847 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1848 exr_decoder_deps="zlib"
1849 ffv1_decoder_select="golomb rangecoder"
1850 ffv1_encoder_select="rangecoder"
1851 ffvhuff_decoder_select="huffyuv_decoder"
1852 ffvhuff_encoder_select="huffyuv_encoder"
1853 fic_decoder_select="golomb"
1854 flac_decoder_select="flacdsp golomb"
1855 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1856 flashsv_decoder_deps="zlib"
1857 flashsv_encoder_deps="zlib"
1858 flashsv2_decoder_deps="zlib"
1859 flv_decoder_select="h263_decoder"
1860 flv_encoder_select="h263_encoder"
1861 fourxm_decoder_select="blockdsp bswapdsp"
1862 fraps_decoder_select="bswapdsp huffman"
1863 g2m_decoder_deps="zlib"
1864 g2m_decoder_select="blockdsp idctdsp jpegtables"
1865 h261_decoder_select="mpeg_er mpegvideo"
1866 h261_encoder_select="aandcttables mpegvideoenc"
1867 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1868 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1869 h263i_decoder_select="h263_decoder"
1870 h263p_encoder_select="h263_encoder"
1871 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1872 h264_decoder_suggest="error_resilience"
1873 h264_nvenc_encoder_deps="nvenc"
1874 h264_qsv_decoder_deps="libmfx"
1875 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1876 h264_qsv_encoder_deps="libmfx"
1877 h264_qsv_encoder_select="qsvenc"
1878 hap_decoder_select="snappy texturedsp"
1879 hap_encoder_deps="libsnappy"
1880 hap_encoder_select="texturedspenc"
1881 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1882 hevc_nvenc_encoder_deps="nvenc"
1883 hevc_qsv_encoder_deps="libmfx"
1884 hevc_qsv_decoder_deps="libmfx"
1885 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
1886 hevc_qsv_encoder_select="qsvenc"
1887 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1888 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1889 iac_decoder_select="imc_decoder"
1890 imc_decoder_select="bswapdsp fft mdct sinewin"
1891 indeo3_decoder_select="hpeldsp"
1892 indeo4_decoder_select="ividsp"
1893 indeo5_decoder_select="ividsp"
1894 interplay_video_decoder_select="hpeldsp"
1895 jpegls_decoder_select="golomb mjpeg_decoder"
1896 jpegls_encoder_select="golomb"
1897 jv_decoder_select="blockdsp"
1898 lagarith_decoder_select="huffyuvdsp"
1899 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1900 loco_decoder_select="golomb"
1901 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1902 metasound_decoder_select="lsp mdct sinewin"
1903 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1904 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1905 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1906 mjpegb_decoder_select="mjpeg_decoder"
1907 mlp_decoder_select="mlp_parser"
1908 motionpixels_decoder_select="bswapdsp"
1909 mp1_decoder_select="mpegaudio"
1910 mp1float_decoder_select="mpegaudio"
1911 mp2_decoder_select="mpegaudio"
1912 mp2float_decoder_select="mpegaudio"
1913 mp3_decoder_select="mpegaudio"
1914 mp3adu_decoder_select="mpegaudio"
1915 mp3adufloat_decoder_select="mpegaudio"
1916 mp3float_decoder_select="mpegaudio"
1917 mp3on4_decoder_select="mpegaudio"
1918 mp3on4float_decoder_select="mpegaudio"
1919 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1920 mpc8_decoder_select="mpegaudiodsp"
1921 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1922 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1923 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1924 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1925 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1926 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1927 mpeg2_qsv_decoder_deps="libmfx"
1928 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
1929 mpeg2_qsv_encoder_deps="libmfx"
1930 mpeg2_qsv_encoder_select="qsvenc"
1931 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1932 mpeg4_encoder_select="h263_encoder"
1933 msa1_decoder_select="mss34dsp"
1934 msmpeg4v1_decoder_select="h263_decoder"
1935 msmpeg4v2_decoder_select="h263_decoder"
1936 msmpeg4v2_encoder_select="h263_encoder"
1937 msmpeg4v3_decoder_select="h263_decoder"
1938 msmpeg4v3_encoder_select="h263_encoder"
1939 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1940 mts2_decoder_select="mss34dsp"
1941 mxpeg_decoder_select="mjpeg_decoder"
1942 nellymoser_decoder_select="mdct sinewin"
1943 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1944 nuv_decoder_select="idctdsp lzo"
1945 on2avc_decoder_select="mdct"
1946 opus_decoder_deps="avresample"
1947 opus_decoder_select="imdct15"
1948 png_decoder_deps="zlib"
1949 png_encoder_deps="zlib"
1950 png_encoder_select="huffyuvencdsp"
1951 prores_decoder_select="idctdsp"
1952 prores_encoder_select="fdctdsp"
1953 qcelp_decoder_select="lsp"
1954 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1955 ra_144_encoder_select="audio_frame_queue lpc"
1956 ralf_decoder_select="golomb"
1957 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1958 rv10_encoder_select="h263_encoder"
1959 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1960 rv20_encoder_select="h263_encoder"
1961 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
1962 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
1963 shorten_decoder_select="golomb"
1964 sipr_decoder_select="lsp"
1965 sp5x_decoder_select="mjpeg_decoder"
1966 svq1_decoder_select="hpeldsp"
1967 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1968 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1969 svq3_decoder_suggest="zlib"
1970 tak_decoder_select="audiodsp"
1971 tdsc_decoder_deps="zlib"
1972 tdsc_decoder_select="mjpeg_decoder"
1973 theora_decoder_select="vp3_decoder"
1974 thp_decoder_select="mjpeg_decoder"
1975 tiff_decoder_suggest="zlib"
1976 tiff_encoder_suggest="zlib"
1977 truehd_decoder_select="mlp_decoder"
1978 truemotion2_decoder_select="bswapdsp"
1979 truespeech_decoder_select="bswapdsp"
1980 tscc_decoder_deps="zlib"
1981 txd_decoder_select="texturedsp"
1982 twinvq_decoder_select="mdct lsp sinewin"
1983 utvideo_decoder_select="bswapdsp"
1984 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1985 vble_decoder_select="huffyuvdsp"
1986 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1987 vc1image_decoder_select="vc1_decoder"
1988 vorbis_decoder_select="mdct"
1989 vorbis_encoder_select="mdct"
1990 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1991 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
1992 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
1993 vp6a_decoder_select="vp6_decoder"
1994 vp6f_decoder_select="vp6_decoder"
1995 vp7_decoder_select="h264pred videodsp vp8dsp"
1996 vp8_decoder_select="h264pred videodsp vp8dsp"
1997 vp9_decoder_select="videodsp"
1998 webp_decoder_select="vp8_decoder"
1999 wmapro_decoder_select="mdct sinewin wma_freqs"
2000 wmav1_decoder_select="mdct sinewin wma_freqs"
2001 wmav1_encoder_select="mdct sinewin wma_freqs"
2002 wmav2_decoder_select="mdct sinewin wma_freqs"
2003 wmav2_encoder_select="mdct sinewin wma_freqs"
2004 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2005 wmv1_decoder_select="h263_decoder"
2006 wmv1_encoder_select="h263_encoder"
2007 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2008 wmv2_encoder_select="h263_encoder wmv2dsp"
2009 wmv3_decoder_select="vc1_decoder"
2010 wmv3image_decoder_select="wmv3_decoder"
2011 zerocodec_decoder_deps="zlib"
2012 zlib_decoder_deps="zlib"
2013 zlib_encoder_deps="zlib"
2014 zmbv_decoder_deps="zlib"
2015 zmbv_encoder_deps="zlib"
2016
2017 # hardware accelerators
2018 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2019 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2020 vaapi_deps="va_va_h"
2021 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2022 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2023 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2024
2025 h263_vaapi_hwaccel_deps="vaapi"
2026 h263_vaapi_hwaccel_select="h263_decoder"
2027 h263_vdpau_hwaccel_deps="vdpau"
2028 h263_vdpau_hwaccel_select="h263_decoder"
2029 h264_d3d11va_hwaccel_deps="d3d11va"
2030 h264_d3d11va_hwaccel_select="h264_decoder"
2031 h264_dxva2_hwaccel_deps="dxva2"
2032 h264_dxva2_hwaccel_select="h264_decoder"
2033 h264_mmal_decoder_deps="mmal"
2034 h264_mmal_hwaccel_deps="mmal"
2035 h264_mmal_decoder_select="h264_decoder"
2036 h264_mmal_encoder_deps="mmal"
2037 h264_qsv_hwaccel_deps="libmfx"
2038 h264_vaapi_hwaccel_deps="vaapi"
2039 h264_vaapi_hwaccel_select="h264_decoder"
2040 h264_vda_hwaccel_deps="vda"
2041 h264_vda_hwaccel_select="h264_decoder"
2042 h264_vda_old_hwaccel_deps="vda"
2043 h264_vda_old_hwaccel_select="h264_decoder"
2044 h264_vdpau_hwaccel_deps="vdpau"
2045 h264_vdpau_hwaccel_select="h264_decoder"
2046 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2047 hevc_d3d11va_hwaccel_select="hevc_decoder"
2048 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2049 hevc_dxva2_hwaccel_select="hevc_decoder"
2050 hevc_qsv_hwaccel_deps="libmfx"
2051 mpeg1_vdpau_hwaccel_deps="vdpau"
2052 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2053 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2054 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2055 mpeg2_dxva2_hwaccel_deps="dxva2"
2056 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2057 mpeg2_qsv_hwaccel_deps="libmfx"
2058 mpeg2_vaapi_hwaccel_deps="vaapi"
2059 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2060 mpeg2_vdpau_hwaccel_deps="vdpau"
2061 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2062 mpeg4_vaapi_hwaccel_deps="vaapi"
2063 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2064 mpeg4_vdpau_hwaccel_deps="vdpau"
2065 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2066 vc1_d3d11va_hwaccel_deps="d3d11va"
2067 vc1_d3d11va_hwaccel_select="vc1_decoder"
2068 vc1_dxva2_hwaccel_deps="dxva2"
2069 vc1_dxva2_hwaccel_select="vc1_decoder"
2070 vc1_vaapi_hwaccel_deps="vaapi"
2071 vc1_vaapi_hwaccel_select="vc1_decoder"
2072 vc1_vdpau_hwaccel_deps="vdpau"
2073 vc1_vdpau_hwaccel_select="vc1_decoder"
2074 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2075 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2076 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2077 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2078
2079 # parsers
2080 h264_parser_select="h264_decoder"
2081 hevc_parser_select="golomb"
2082 mpegvideo_parser_select="mpegvideo"
2083 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2084 vc1_parser_select="mpegvideo startcode vc1_decoder"
2085
2086 # bitstream_filters
2087 mjpeg2jpeg_bsf_select="jpegtables"
2088
2089 # external libraries
2090 libdcadec_decoder_deps="libdcadec"
2091 libfaac_encoder_deps="libfaac"
2092 libfaac_encoder_select="audio_frame_queue"
2093 libfdk_aac_decoder_deps="libfdk_aac"
2094 libfdk_aac_encoder_deps="libfdk_aac"
2095 libfdk_aac_encoder_select="audio_frame_queue"
2096 libgsm_decoder_deps="libgsm"
2097 libgsm_encoder_deps="libgsm"
2098 libgsm_ms_decoder_deps="libgsm"
2099 libgsm_ms_encoder_deps="libgsm"
2100 libilbc_decoder_deps="libilbc"
2101 libilbc_encoder_deps="libilbc"
2102 libmp3lame_encoder_deps="libmp3lame"
2103 libmp3lame_encoder_select="audio_frame_queue"
2104 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2105 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2106 libopencore_amrnb_encoder_select="audio_frame_queue"
2107 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2108 libopenh264_encoder_deps="libopenh264"
2109 libopenjpeg_decoder_deps="libopenjpeg"
2110 libopenjpeg_encoder_deps="libopenjpeg"
2111 libopus_decoder_deps="libopus"
2112 libopus_encoder_deps="libopus"
2113 libopus_encoder_select="audio_frame_queue"
2114 libschroedinger_decoder_deps="libschroedinger"
2115 libschroedinger_encoder_deps="libschroedinger"
2116 libspeex_decoder_deps="libspeex"
2117 libspeex_encoder_deps="libspeex"
2118 libspeex_encoder_select="audio_frame_queue"
2119 libtheora_encoder_deps="libtheora"
2120 libtwolame_encoder_deps="libtwolame"
2121 libvo_aacenc_encoder_deps="libvo_aacenc"
2122 libvo_aacenc_encoder_select="audio_frame_queue"
2123 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2124 libvorbis_encoder_deps="libvorbis"
2125 libvorbis_encoder_select="audio_frame_queue"
2126 libvpx_vp8_decoder_deps="libvpx"
2127 libvpx_vp8_encoder_deps="libvpx"
2128 libvpx_vp9_decoder_deps="libvpx"
2129 libvpx_vp9_encoder_deps="libvpx"
2130 libwavpack_encoder_deps="libwavpack"
2131 libwebp_encoder_deps="libwebp"
2132 libx262_encoder_deps="libx262"
2133 libx264_encoder_deps="libx264"
2134 libx265_encoder_deps="libx265"
2135 libxavs_encoder_deps="libxavs"
2136 libxvid_encoder_deps="libxvid"
2137
2138 # demuxers / muxers
2139 ac3_demuxer_select="ac3_parser"
2140 asf_demuxer_select="riffdec"
2141 asf_muxer_select="riffenc"
2142 asf_stream_muxer_select="asf_muxer"
2143 avi_demuxer_select="riffdec"
2144 avi_muxer_select="riffenc"
2145 avisynth_demuxer_deps="avisynth"
2146 avisynth_demuxer_select="riffdec"
2147 caf_demuxer_select="riffdec"
2148 dash_muxer_select="mp4_muxer"
2149 dirac_demuxer_select="dirac_parser"
2150 dv_demuxer_select="dvprofile"
2151 dv_muxer_select="dvprofile"
2152 dxa_demuxer_select="riffdec"
2153 eac3_demuxer_select="ac3_parser"
2154 f4v_muxer_select="mov_muxer"
2155 flac_demuxer_select="flac_parser"
2156 hds_muxer_select="flv_muxer"
2157 hls_muxer_select="mpegts_muxer"
2158 ipod_muxer_select="mov_muxer"
2159 ismv_muxer_select="mov_muxer"
2160 matroska_audio_muxer_select="matroska_muxer"
2161 matroska_demuxer_select="riffdec"
2162 matroska_demuxer_suggest="bzlib lzo zlib"
2163 matroska_muxer_select="riffenc"
2164 mmf_muxer_select="riffenc"
2165 mov_demuxer_select="riffdec"
2166 mov_demuxer_suggest="zlib"
2167 mov_muxer_select="riffenc rtpenc_chain"
2168 mp3_demuxer_select="mpegaudio_parser"
2169 mp4_muxer_select="mov_muxer"
2170 mpegts_muxer_select="adts_muxer latm_muxer"
2171 mpegtsraw_demuxer_select="mpegts_demuxer"
2172 mxf_d10_muxer_select="mxf_muxer"
2173 nut_muxer_select="riffenc"
2174 nuv_demuxer_select="riffdec"
2175 oga_muxer_select="ogg_muxer"
2176 ogg_demuxer_select="golomb"
2177 opus_muxer_select="ogg_muxer"
2178 psp_muxer_select="mov_muxer"
2179 rtp_demuxer_select="sdp_demuxer"
2180 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2181 rtsp_demuxer_select="http_protocol rtpdec"
2182 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2183 sap_demuxer_select="sdp_demuxer"
2184 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2185 sdp_demuxer_select="rtpdec"
2186 smoothstreaming_muxer_select="ismv_muxer"
2187 spdif_muxer_select="aac_parser"
2188 spx_muxer_select="ogg_muxer"
2189 tak_demuxer_select="tak_parser"
2190 tg2_muxer_select="mov_muxer"
2191 tgp_muxer_select="mov_muxer"
2192 w64_demuxer_select="wav_demuxer"
2193 wav_demuxer_select="riffdec"
2194 wav_muxer_select="riffenc"
2195 webm_muxer_select="riffenc"
2196 wtv_demuxer_select="riffdec"
2197 xmv_demuxer_select="riffdec"
2198 xwma_demuxer_select="riffdec"
2199
2200 # indevs / outdevs
2201 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2202 alsa_outdev_deps="alsa_asoundlib_h"
2203 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2204 dv1394_indev_deps="dv1394"
2205 dv1394_indev_select="dv_demuxer"
2206 fbdev_indev_deps="linux_fb_h"
2207 jack_indev_deps="jack_jack_h pthreads"
2208 libcdio_indev_deps="libcdio"
2209 libdc1394_indev_deps="libdc1394"
2210 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2211 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2212 pulse_indev_deps="libpulse"
2213 sndio_indev_deps="sndio_h"
2214 sndio_outdev_deps="sndio_h"
2215 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2216 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2217 vfwcap_indev_extralibs="-lavicap32"
2218 x11grab_indev_deps="x11grab"
2219 x11grab_xcb_indev_deps="libxcb"
2220
2221 # protocols
2222 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2223 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2224 ffrtmpcrypt_protocol_select="tcp_protocol"
2225 ffrtmphttp_protocol_deps="!librtmp_protocol"
2226 ffrtmphttp_protocol_select="http_protocol"
2227 gopher_protocol_select="network"
2228 http_protocol_select="tcp_protocol"
2229 httpproxy_protocol_select="tcp_protocol"
2230 https_protocol_select="tls_protocol"
2231 icecast_protocol_select="http_protocol"
2232 librtmp_protocol_deps="librtmp"
2233 librtmpe_protocol_deps="librtmp"
2234 librtmps_protocol_deps="librtmp"
2235 librtmpt_protocol_deps="librtmp"
2236 librtmpte_protocol_deps="librtmp"
2237 mmsh_protocol_select="http_protocol"
2238 mmst_protocol_select="network"
2239 rtmp_protocol_deps="!librtmp_protocol"
2240 rtmp_protocol_select="tcp_protocol"
2241 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2242 rtmps_protocol_deps="!librtmp_protocol"
2243 rtmps_protocol_select="tls_protocol"
2244 rtmpt_protocol_select="ffrtmphttp_protocol"
2245 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2246 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2247 rtp_protocol_select="udp_protocol"
2248 sctp_protocol_deps="struct_sctp_event_subscribe"
2249 sctp_protocol_select="network"
2250 srtp_protocol_select="rtp_protocol"
2251 tcp_protocol_select="network"
2252 tls_gnutls_protocol_deps="gnutls"
2253 tls_gnutls_protocol_select="tcp_protocol"
2254 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2255 tls_openssl_protocol_select="tcp_protocol"
2256 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2257 udp_protocol_select="network"
2258 unix_protocol_deps="sys_un_h"
2259 unix_protocol_select="network"
2260
2261 # filters
2262 blackframe_filter_deps="gpl"
2263 boxblur_filter_deps="gpl"
2264 bs2b_filter_deps="libbs2b"
2265 cropdetect_filter_deps="gpl"
2266 delogo_filter_deps="gpl"
2267 drawtext_filter_deps="libfreetype"
2268 frei0r_filter_deps="frei0r dlopen"
2269 frei0r_filter_extralibs='$ldl'
2270 frei0r_src_filter_deps="frei0r dlopen"
2271 frei0r_src_filter_extralibs='$ldl'
2272 hqdn3d_filter_deps="gpl"
2273 interlace_filter_deps="gpl"
2274 ocv_filter_deps="libopencv"
2275 resample_filter_deps="avresample"
2276 scale_filter_deps="swscale"
2277
2278 # examples
2279 avcodec_example_deps="avcodec avutil"
2280 filter_audio_example_deps="avfilter avutil"
2281 metadata_example_deps="avformat avutil"
2282 output_example_deps="avcodec avformat avutil swscale"
2283 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2284 transcode_aac_example_deps="avcodec avformat avresample"
2285
2286 # libraries, in linking order
2287 avcodec_deps="avutil"
2288 avdevice_deps="avformat avcodec avutil"
2289 avfilter_deps="avutil"
2290 avformat_deps="avcodec avutil"
2291 avresample_deps="avutil"
2292 swscale_deps="avutil"
2293
2294 # programs
2295 avconv_deps="avcodec avfilter avformat avresample swscale"
2296 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2297                fps_filter null_filter resample_filter scale_filter
2298                setpts_filter trim_filter"
2299 avplay_deps="avcodec avformat avresample swscale sdl"
2300 avplay_libs='$sdl_libs'
2301 avplay_select="rdft transpose_filter hflip_filter vflip_filter"
2302 avprobe_deps="avcodec avformat"
2303
2304 # documentation
2305 pod2man_deps="doc"
2306 texi2html_deps="doc"
2307
2308 # default parameters
2309
2310 logfile="config.log"
2311
2312 # installation paths
2313 prefix_default="/usr/local"
2314 bindir_default='${prefix}/bin'
2315 datadir_default='${prefix}/share/avconv'
2316 docdir_default='${prefix}/share/doc/libav'
2317 incdir_default='${prefix}/include'
2318 libdir_default='${prefix}/lib'
2319 mandir_default='${prefix}/share/man'
2320 shlibdir_default="$libdir_default"
2321
2322 # toolchain
2323 ar_default="ar"
2324 cc_default="gcc"
2325 host_cc_default="gcc"
2326 cp_f="cp -f"
2327 ln_s="ln -s -f"
2328 nm_default="nm -g"
2329 objformat="elf"
2330 pkg_config_default=pkg-config
2331 ranlib="ranlib"
2332 strip="strip"
2333 yasmexe="yasm"
2334
2335 # machine
2336 arch_default=$(uname -m)
2337 cpu="generic"
2338 intrinsics="none"
2339
2340 # OS
2341 target_os_default=$(tolower $(uname -s))
2342 host_os=$target_os_default
2343
2344 # configurable options
2345 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2346
2347 enable asm
2348 enable debug
2349 enable doc
2350 enable faan faandct faanidct
2351 enable optimizations
2352 enable safe_bitstream_reader
2353 enable static
2354 enable swscale_alpha
2355 enable valgrind_backtrace
2356
2357 # By default, enable only those hwaccels that have no external dependencies.
2358 enable d3d11va dxva2 vda vdpau
2359
2360 # build settings
2361 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2362 LIBPREF="lib"
2363 LIBSUF=".a"
2364 FULLNAME='$(NAME)$(BUILDSUF)'
2365 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2366 SLIBPREF="lib"
2367 SLIBSUF=".so"
2368 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2369 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2370 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2371 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2372 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2373 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2374
2375 asflags_filter=echo
2376 cflags_filter=echo
2377 ldflags_filter=echo
2378
2379 AS_C='-c'
2380 AS_O='-o $@'
2381 CC_C='-c'
2382 CC_E='-E -o $@'
2383 CC_O='-o $@'
2384 LD_O='-o $@'
2385 LD_LIB='-l%'
2386 LD_PATH='-L'
2387 HOSTCC_C='-c'
2388 HOSTCC_E='-E -o $@'
2389 HOSTCC_O='-o $@'
2390 HOSTLD_O='-o $@'
2391
2392 host_libs='-lm'
2393 host_cflags_filter=echo
2394 host_ldflags_filter=echo
2395
2396 target_path='$(CURDIR)'
2397
2398 # since the object filename is not given with the -MM flag, the compiler
2399 # is only able to print the basename, and we must add the path ourselves
2400 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2401 DEPFLAGS='-MM'
2402
2403 # find source path
2404 if test -f configure; then
2405     source_path=.
2406 else
2407     source_path=$(cd $(dirname "$0"); pwd)
2408     echo "$source_path" | grep -q '[[:blank:]]' &&
2409         die "Out of tree builds are impossible with whitespace in source path."
2410     test -e "$source_path/config.h" &&
2411         die "Out of tree builds are impossible with config.h in source dir."
2412 fi
2413
2414 for v in "$@"; do
2415     r=${v#*=}
2416     l=${v%"$r"}
2417     r=$(sh_quote "$r")
2418     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2419 done
2420
2421 find_things(){
2422     thing=$1
2423     pattern=$2
2424     file=$source_path/$3
2425     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2426 }
2427
2428 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2429 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2430 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2431 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2432 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2433 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2434 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2435 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2436 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2437 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2438 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2439
2440 ALL_COMPONENTS="
2441     $BSF_LIST
2442     $DECODER_LIST
2443     $DEMUXER_LIST
2444     $ENCODER_LIST
2445     $FILTER_LIST
2446     $HWACCEL_LIST
2447     $INDEV_LIST
2448     $MUXER_LIST
2449     $OUTDEV_LIST
2450     $PARSER_LIST
2451     $PROTOCOL_LIST
2452 "
2453
2454 for n in $COMPONENT_LIST; do
2455     v=$(toupper ${n%s})_LIST
2456     eval enable \$$v
2457     eval ${n}_if_any="\$$v"
2458 done
2459
2460 enable $ARCH_EXT_LIST
2461
2462 die_unknown(){
2463     echo "Unknown option \"$1\"."
2464     echo "See $0 --help for available options."
2465     exit 1
2466 }
2467
2468 print_3_columns() {
2469     cat | tr ' ' '\n' | sort | pr -r -3 -t
2470 }
2471
2472 show_list() {
2473     suffix=_$1
2474     shift
2475     echo $* | sed s/$suffix//g | print_3_columns
2476     exit 0
2477 }
2478
2479 rand_list(){
2480     IFS=', '
2481     set -- $*
2482     unset IFS
2483     for thing; do
2484         comp=${thing%:*}
2485         prob=${thing#$comp}
2486         prob=${prob#:}
2487         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2488         echo "prob ${prob:-0.5}"
2489         printf '%s\n' $comp
2490     done
2491 }
2492
2493 do_random(){
2494     action=$1
2495     shift
2496     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2497     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2498 }
2499
2500 for opt do
2501     optval="${opt#*=}"
2502     case "$opt" in
2503         --extra-ldflags=*)
2504             add_ldflags $optval
2505         ;;
2506         --extra-ldexeflags=*)
2507             add_ldexeflags $optval
2508         ;;
2509         --extra-libs=*)
2510             add_extralibs $optval
2511         ;;
2512         --disable-devices)
2513             disable $INDEV_LIST $OUTDEV_LIST
2514         ;;
2515         --enable-debug=*)
2516             debuglevel="$optval"
2517         ;;
2518         --disable-programs)
2519             disable $PROGRAM_LIST
2520         ;;
2521         --disable-everything)
2522             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2523         ;;
2524         --disable-all)
2525             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2526             disable $LIBRARY_LIST $PROGRAM_LIST doc
2527         ;;
2528         --enable-random|--disable-random)
2529             action=${opt%%-random}
2530             do_random ${action#--} $COMPONENT_LIST
2531         ;;
2532         --enable-random=*|--disable-random=*)
2533             action=${opt%%-random=*}
2534             do_random ${action#--} $optval
2535         ;;
2536         --enable-*=*|--disable-*=*)
2537             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2538             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2539             eval list=\$$(toupper $thing)_LIST
2540             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2541             $action $(filter "$name" $list)
2542         ;;
2543         --enable-avserver|--disable-avserver*)
2544             warn "avserver has been removed, the ${opt} option is only"\
2545                  "provided for compatibility and will be removed in the future"
2546         ;;
2547         --enable-?*|--disable-?*)
2548             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2549             if is_in $option $COMPONENT_LIST; then
2550                 test $action = disable && action=unset
2551                 eval $action \$$(toupper ${option%s})_LIST
2552             elif is_in $option $CMDLINE_SELECT; then
2553                 $action $option
2554             else
2555                 die_unknown $opt
2556             fi
2557         ;;
2558         --list-*)
2559             NAME="${opt#--list-}"
2560             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2561             NAME=${NAME%s}
2562             eval show_list $NAME \$$(toupper $NAME)_LIST
2563         ;;
2564         --help|-h) show_help
2565         ;;
2566         *)
2567             optname="${opt%%=*}"
2568             optname="${optname#--}"
2569             optname=$(echo "$optname" | sed 's/-/_/g')
2570             if is_in $optname $CMDLINE_SET; then
2571                 eval $optname='$optval'
2572             elif is_in $optname $CMDLINE_APPEND; then
2573                 append $optname "$optval"
2574             else
2575                 die_unknown $opt
2576             fi
2577         ;;
2578     esac
2579 done
2580
2581 for e in $env; do
2582     eval "export $e"
2583 done
2584
2585 disabled logging && logfile=/dev/null
2586
2587 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2588 set >> $logfile
2589
2590 case "$toolchain" in
2591     clang-asan)
2592         cc_default="clang"
2593         add_cflags  -fsanitize=address
2594         add_ldflags -fsanitize=address
2595     ;;
2596     clang-tsan)
2597         cc_default="clang"
2598         add_cflags  -fsanitize=thread -pie
2599         add_ldflags -fsanitize=thread -pie
2600     ;;
2601     clang-usan)
2602         cc_default="clang"
2603         add_cflags  -fsanitize=undefined -O1
2604         add_ldflags -fsanitize=undefined
2605     ;;
2606     gcc-asan)
2607         cc_default="gcc"
2608         add_cflags  -fsanitize=address
2609         add_ldflags -fsanitize=address
2610     ;;
2611     gcc-tsan)
2612         cc_default="gcc"
2613         add_cflags  -fsanitize=thread -pie -fPIC
2614         add_ldflags -fsanitize=thread -pie -fPIC
2615     ;;
2616     gcc-usan)
2617         cc_default="gcc"
2618         add_cflags  -fsanitize=undefined
2619         add_ldflags -fsanitize=undefined
2620     ;;
2621     valgrind-massif)
2622         target_exec_default="valgrind"
2623         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2624     ;;
2625     valgrind-memcheck)
2626         target_exec_default="valgrind"
2627         target_exec_args="--track-origins=yes --leak-check=full"
2628     ;;
2629     msvc)
2630         # Check whether the current MSVC version needs the C99 converter.
2631         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2632         # support enough of C99 to build libav. Default to the new
2633         # behaviour if the regexp was unable to match anything, since this
2634         # successfully parses the version number of existing supported
2635         # versions that require the converter (MSVC 2010 and 2012).
2636         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2637         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2638             cc_default="cl"
2639         else
2640             cc_default="c99wrap cl"
2641         fi
2642         ld_default="$source_path/compat/windows/mslink"
2643         nm_default="dumpbin -symbols"
2644         ar_default="lib"
2645         case "$arch" in
2646         arm*)
2647             as_default="armasm"
2648             ;;
2649         esac
2650         target_os_default="win32"
2651         # Use a relative path for TMPDIR. This makes sure all the
2652         # ffconf temp files are written with a relative path, avoiding
2653         # issues with msys/win32 path conversion for MSVC parameters
2654         # such as -Fo<file> or -out:<file>.
2655         TMPDIR=.
2656     ;;
2657     icl)
2658         cc_default="icl"
2659         ld_default="xilink"
2660         nm_default="dumpbin -symbols"
2661         ar_default="xilib"
2662         target_os_default="win32"
2663         TMPDIR=.
2664     ;;
2665     gcov)
2666         add_cflags  -fprofile-arcs -ftest-coverage
2667         add_ldflags -fprofile-arcs -ftest-coverage
2668     ;;
2669     hardened)
2670         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2671         add_cflags   -fno-strict-overflow -fstack-protector-all
2672         add_ldflags  -Wl,-z,relro -Wl,-z,now
2673     ;;
2674     ?*)
2675         die "Unknown toolchain $toolchain"
2676     ;;
2677 esac
2678
2679 test -n "$cross_prefix" && enable cross_compile
2680
2681 if enabled cross_compile; then
2682     test -n "$arch" && test -n "$target_os" ||
2683         die "Must specify target arch and OS when cross-compiling"
2684 fi
2685
2686 ar_default="${cross_prefix}${ar_default}"
2687 cc_default="${cross_prefix}${cc_default}"
2688 nm_default="${cross_prefix}${nm_default}"
2689 pkg_config_default="${cross_prefix}${pkg_config_default}"
2690 ranlib="${cross_prefix}${ranlib}"
2691 strip="${cross_prefix}${strip}"
2692
2693 sysinclude_default="${sysroot}/usr/include"
2694
2695 set_default arch cc pkg_config sysinclude target_exec target_os
2696 enabled cross_compile || host_cc_default=$cc
2697 set_default host_cc
2698
2699 if ! $pkg_config --version >/dev/null 2>&1; then
2700     warn "$pkg_config not found, library detection may fail."
2701     pkg_config=false
2702 fi
2703
2704 exesuf() {
2705     case $1 in
2706         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2707     esac
2708 }
2709
2710 EXESUF=$(exesuf $target_os)
2711 HOSTEXESUF=$(exesuf $host_os)
2712
2713 # set temporary file name
2714 : ${TMPDIR:=$TEMPDIR}
2715 : ${TMPDIR:=$TMP}
2716 : ${TMPDIR:=/tmp}
2717
2718 if ! check_cmd mktemp -u XXXXXX; then
2719     # simple replacement for missing mktemp
2720     # NOT SAFE FOR GENERAL USE
2721     mktemp(){
2722         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2723     }
2724 fi
2725
2726 tmpfile(){
2727     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2728         (set -C; exec > $tmp) 2>/dev/null ||
2729         die "Unable to create temporary file in $TMPDIR."
2730     append TMPFILES $tmp
2731     eval $1=$tmp
2732 }
2733
2734 trap 'rm -f -- $TMPFILES' EXIT
2735
2736 tmpfile TMPASM .asm
2737 tmpfile TMPC   .c
2738 tmpfile TMPE   $EXESUF
2739 tmpfile TMPH   .h
2740 tmpfile TMPO   .o
2741 tmpfile TMPS   .S
2742 tmpfile TMPSH  .sh
2743 tmpfile TMPV   .ver
2744
2745 unset -f mktemp
2746
2747 chmod +x $TMPE
2748
2749 # make sure we can execute files in $TMPDIR
2750 cat > $TMPSH 2>> $logfile <<EOF
2751 #! /bin/sh
2752 EOF
2753 chmod +x $TMPSH >> $logfile 2>&1
2754 if ! $TMPSH >> $logfile 2>&1; then
2755     cat <<EOF
2756 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2757 variable to another directory and make sure that it is not mounted noexec.
2758 EOF
2759     die "Sanity test failed."
2760 fi
2761
2762 armasm_flags(){
2763     for flag; do
2764         case $flag in
2765             # Filter out MSVC cl.exe options from cflags that shouldn't
2766             # be passed to gas-preprocessor
2767             -M[TD]*)                                            ;;
2768             *)                  echo $flag                      ;;
2769         esac
2770    done
2771 }
2772
2773 ccc_flags(){
2774     for flag; do
2775         case $flag in
2776             -std=c99)           echo -c99                       ;;
2777             -mcpu=*)            echo -arch ${flag#*=}           ;;
2778             -mieee)             echo -ieee                      ;;
2779             -O*|-fast)          echo $flag                      ;;
2780             -fno-math-errno)    echo -assume nomath_errno       ;;
2781             -g)                 echo -g3                        ;;
2782             -Wall)              echo -msg_enable level2         ;;
2783             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2784             -Wl,*)              echo $flag                      ;;
2785             -f*|-W*)                                            ;;
2786             *)                  echo $flag                      ;;
2787         esac
2788    done
2789 }
2790
2791 cparser_flags(){
2792     for flag; do
2793         case $flag in
2794             -Wno-switch)             echo -Wno-switch-enum ;;
2795             -Wno-format-zero-length) ;;
2796             -Wdisabled-optimization) ;;
2797             -Wno-pointer-sign)       echo -Wno-other ;;
2798             *)                       echo $flag ;;
2799         esac
2800     done
2801 }
2802
2803 msvc_common_flags(){
2804     for flag; do
2805         case $flag in
2806             # In addition to specifying certain flags under the compiler
2807             # specific filters, they must be specified here as well or else the
2808             # generic catch all at the bottom will print the original flag.
2809             -Wall)                ;;
2810             -std=c99)             ;;
2811             # Common flags
2812             -fomit-frame-pointer) ;;
2813             -g)                   echo -Z7 ;;
2814             -fno-math-errno)      ;;
2815             -fno-common)          ;;
2816             -fno-signed-zeros)    ;;
2817             -fPIC)                ;;
2818             -mthumb)              ;;
2819             -march=*)             ;;
2820             -lz)                  echo zlib.lib ;;
2821             -lavifil32)           echo vfw32.lib ;;
2822             -lavicap32)           echo vfw32.lib user32.lib ;;
2823             -l*)                  echo ${flag#-l}.lib ;;
2824             -L*)                  echo -libpath:${flag#-L} ;;
2825             *)                    echo $flag ;;
2826         esac
2827     done
2828 }
2829
2830 msvc_flags(){
2831     msvc_common_flags "$@"
2832     for flag; do
2833         case $flag in
2834             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2835                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2836                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2837                                        -wd4273 -wd4554 -wd4701 ;;
2838         esac
2839     done
2840 }
2841
2842 icl_flags(){
2843     msvc_common_flags "$@"
2844     for flag; do
2845         case $flag in
2846             # Despite what Intel's documentation says -Wall, which is supported
2847             # on Windows, does enable remarks so disable them here.
2848             -Wall)                echo $flag -Qdiag-disable:remark ;;
2849             -std=c99)             echo -Qstd=c99 ;;
2850         esac
2851     done
2852 }
2853
2854 pgi_flags(){
2855     for flag; do
2856         case $flag in
2857             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2858             -fomit-frame-pointer) echo -Mnoframe ;;
2859             -g)                   echo -gopt ;;
2860             *)                    echo $flag ;;
2861         esac
2862     done
2863 }
2864
2865 suncc_flags(){
2866     for flag; do
2867         case $flag in
2868             -march=*|-mcpu=*)
2869                 case "${flag#*=}" in
2870                     native)                   echo -xtarget=native       ;;
2871                     v9|niagara)               echo -xarch=sparc          ;;
2872                     ultrasparc)               echo -xarch=sparcvis       ;;
2873                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2874                     i586|pentium)             echo -xchip=pentium        ;;
2875                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2876                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2877                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2878                     pentium4*)          echo -xtarget=pentium4           ;;
2879                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2880                     *-sse3)             echo -xarch=sse3                 ;;
2881                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2882                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2883                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2884                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2885                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2886                     k8|opteron|athlon64|athlon-fx)
2887                                                echo -xarch=sse2a         ;;
2888                     athlon*)                   echo -xarch=pentium_proa  ;;
2889                 esac
2890                 ;;
2891             -std=c99)             echo -xc99              ;;
2892             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2893             -fPIC)                echo -KPIC -xcode=pic32 ;;
2894             -W*,*)                echo $flag              ;;
2895             -f*-*|-W*|-mimpure-text)                      ;;
2896             -shared)              echo -G                 ;;
2897             *)                    echo $flag              ;;
2898         esac
2899     done
2900 }
2901
2902 tms470_flags(){
2903     for flag; do
2904         case $flag in
2905             -march=*|-mcpu=*)
2906                 case "${flag#*=}" in
2907                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2908                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2909                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2910                     armv6*|arm11*)          echo -mv=6   ;;
2911                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2912                                             echo -mv=5e  ;;
2913                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2914                 esac
2915                 ;;
2916             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2917             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2918             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2919             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2920             -msoft-float)   echo --float_support=vfplib       ;;
2921             -O[0-3]|-mf=*)  echo $flag                        ;;
2922             -g)             echo -g -mn                       ;;
2923             -pds=*)         echo $flag                        ;;
2924             -D*|-I*)        echo $flag                        ;;
2925             --gcc|--abi=*)  echo $flag                        ;;
2926             -me)            echo $flag                        ;;
2927         esac
2928     done
2929 }
2930
2931 probe_cc(){
2932     pfx=$1
2933     _cc=$2
2934
2935     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2936     unset _ld_o _ldflags _ld_lib _ld_path
2937     unset _depflags _DEPCMD _DEPFLAGS
2938     _flags_filter=echo
2939
2940     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2941         _type=llvm_gcc
2942         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2943         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2944         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2945         _cflags_speed='-O3'
2946         _cflags_size='-Os'
2947     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2948         _type=gcc
2949         gcc_version=$($_cc --version | head -n1)
2950         gcc_basever=$($_cc -dumpversion)
2951         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2952         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2953         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2954         if ! $_cc -dumpversion | grep -q '^2\.'; then
2955             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2956         fi
2957         _cflags_speed='-O3'
2958         _cflags_size='-Os'
2959     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2960         _type=icc
2961         _ident=$($_cc --version | head -n1)
2962         _depflags='-MMD'
2963         _cflags_speed='-O3'
2964         _cflags_size='-Os'
2965         _cflags_noopt='-O1'
2966     elif $_cc -v 2>&1 | grep -q xlc; then
2967         _type=xlc
2968         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2969         _cflags_speed='-O5'
2970         _cflags_size='-O5 -qcompact'
2971     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2972         _type=ccc
2973         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2974         _DEPFLAGS='-M'
2975         _cflags_speed='-fast'
2976         _cflags_size='-O1'
2977         _flags_filter=ccc_flags
2978     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2979         test -d "$sysroot" || die "No valid sysroot specified."
2980         _type=armcc
2981         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2982         armcc_conf="$PWD/armcc.conf"
2983         $_cc --arm_linux_configure                 \
2984              --arm_linux_config_file="$armcc_conf" \
2985              --configure_sysroot="$sysroot"        \
2986              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2987              die "Error creating armcc configuration file."
2988         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2989         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2990         as_default="${cross_prefix}gcc"
2991         _depflags='-MMD'
2992         _cflags_speed='-O3'
2993         _cflags_size='-Os'
2994     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2995         _type=tms470
2996         _ident=$($_cc -version | head -n1 | tr -s ' ')
2997         _flags='--gcc --abi=eabi -me'
2998         _cc_e='-ppl -fe=$@'
2999         _cc_o='-fe=$@'
3000         _depflags='-ppa -ppd=$(@:.o=.d)'
3001         _cflags_speed='-O3 -mf=5'
3002         _cflags_size='-O3 -mf=2'
3003         _flags_filter=tms470_flags
3004     elif $_cc -v 2>&1 | grep -q clang; then
3005         _type=clang
3006         _ident=$($_cc --version | head -n1)
3007         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3008         _cflags_speed='-O3'
3009         _cflags_size='-Os'
3010     elif $_cc -V 2>&1 | grep -q Sun; then
3011         _type=suncc
3012         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3013         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3014         _DEPFLAGS='-xM1 -xc99'
3015         _ldflags='-std=c99'
3016         _cflags_speed='-O5'
3017         _cflags_size='-O5 -xspace'
3018         _flags_filter=suncc_flags
3019     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3020         _type=pathscale
3021         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3022         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3023         _cflags_speed='-O2'
3024         _cflags_size='-Os'
3025         _flags_filter='filter_out -Wdisabled-optimization'
3026     elif $_cc -v 2>&1 | grep -q Open64; then
3027         _type=open64
3028         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3029         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3030         _cflags_speed='-O2'
3031         _cflags_size='-Os'
3032         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3033     elif $_cc -V 2>&1 | grep -q Portland; then
3034         _type=pgi
3035         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3036         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3037         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3038         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3039         _cflags_noopt="-O1"
3040         _flags_filter=pgi_flags
3041     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3042         _type=armasm
3043         _ident=$($_cc | head -n1)
3044         # 4509: "This form of conditional instruction is deprecated"
3045         _flags="-nologo -ignore 4509"
3046         _flags_filter=armasm_flags
3047     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3048         _type=msvc
3049         _ident=$($_cc 2>&1 | head -n1)
3050         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3051         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3052         _cflags_speed="-O2"
3053         _cflags_size="-O1"
3054         if $_cc -nologo- 2>&1 | grep -q Linker; then
3055             _ld_o='-out:$@'
3056         else
3057             _ld_o='-Fe$@'
3058         fi
3059         _cc_o='-Fo$@'
3060         _cc_e='-P -Fi$@'
3061         _flags_filter=msvc_flags
3062         _ld_lib='lib%.a'
3063         _ld_path='-libpath:'
3064         _flags='-nologo'
3065         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS'
3066     elif $_cc 2>&1 | grep -q Intel; then
3067         _type=icl
3068         _ident=$($_cc 2>&1 | head -n1)
3069         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3070         # Not only is O3 broken on 13.x+ but it is slower on all previous
3071         # versions (tested) as well.
3072         _cflags_speed="-O2"
3073         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3074         if $_cc 2>&1 | grep -q Linker; then
3075             _ld_o='-out:$@'
3076         else
3077             _ld_o='-Fe$@'
3078         fi
3079         _cc_o='-Fo$@'
3080         _cc_e='-P'
3081         _flags_filter=icl_flags
3082         _ld_lib='lib%.a'
3083         _ld_path='-libpath:'
3084         # -Qdiag-error to make icl error when seeing certain unknown arguments
3085         _flags='-nologo -Qdiag-error:4044,10157'
3086         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3087         # with MSVC which enables it by default.
3088         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS'
3089     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3090         _type=cparser
3091         _ident=$($_cc --version | head -n1)
3092         _depflags='-MMD'
3093         _cflags_speed='-O4'
3094         _cflags_size='-O2'
3095         _flags_filter=cparser_flags
3096     fi
3097
3098     eval ${pfx}_type=\$_type
3099     eval ${pfx}_ident=\$_ident
3100 }
3101
3102 set_ccvars(){
3103     eval ${1}_C=\${_cc_c-\${${1}_C}}
3104     eval ${1}_E=\${_cc_e-\${${1}_E}}
3105     eval ${1}_O=\${_cc_o-\${${1}_O}}
3106
3107     if [ -n "$_depflags" ]; then
3108         eval ${1}_DEPFLAGS=\$_depflags
3109     else
3110         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3111         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3112         eval DEP${1}FLAGS=\$_flags
3113     fi
3114 }
3115
3116 probe_cc cc "$cc"
3117 cflags_filter=$_flags_filter
3118 cflags_speed=$_cflags_speed
3119 cflags_size=$_cflags_size
3120 cflags_noopt=$_cflags_noopt
3121 add_cflags $_flags $_cflags
3122 cc_ldflags=$_ldflags
3123 set_ccvars CC
3124
3125 probe_cc hostcc "$host_cc"
3126 host_cflags_filter=$_flags_filter
3127 add_host_cflags  $_flags $_cflags
3128 set_ccvars HOSTCC
3129
3130 test -n "$cc_type" && enable $cc_type ||
3131     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3132
3133 : ${as_default:=$cc}
3134 : ${dep_cc_default:=$cc}
3135 : ${ld_default:=$cc}
3136 : ${host_ld_default:=$host_cc}
3137 set_default ar as dep_cc ld host_ld
3138
3139 probe_cc as "$as"
3140 asflags_filter=$_flags_filter
3141 add_asflags $_flags $_cflags
3142 set_ccvars AS
3143
3144 probe_cc ld "$ld"
3145 ldflags_filter=$_flags_filter
3146 add_ldflags $_flags $_ldflags
3147 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3148 LD_O=${_ld_o-$LD_O}
3149 LD_LIB=${_ld_lib-$LD_LIB}
3150 LD_PATH=${_ld_path-$LD_PATH}
3151
3152 probe_cc hostld "$host_ld"
3153 host_ldflags_filter=$_flags_filter
3154 add_host_ldflags $_flags $_ldflags
3155 HOSTLD_O=${_ld_o-$HOSTLD_O}
3156
3157 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3158     probe_cc depcc "$dep_cc"
3159     CCDEP=${_DEPCMD:-$DEPCMD}
3160     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3161     DEPCCFLAGS=$_flags
3162 fi
3163
3164 if $ar 2>&1 | grep -q Microsoft; then
3165     arflags="-nologo"
3166     ar_o='-out:$@'
3167 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3168     arflags="rq"
3169     ar_o='$@'
3170 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3171     arflags='-Xany -r -c'
3172     ar_o='$@'
3173 else
3174     arflags="rc"
3175     ar_o='$@'
3176 fi
3177
3178 add_cflags $extra_cflags
3179 add_asflags $extra_cflags
3180
3181 if test -n "$sysroot"; then
3182     case "$cc_type" in
3183         gcc|llvm_gcc|clang)
3184             add_cppflags --sysroot="$sysroot"
3185             add_ldflags --sysroot="$sysroot"
3186         ;;
3187         tms470)
3188             add_cppflags -I"$sysinclude"
3189             add_ldflags  --sysroot="$sysroot"
3190         ;;
3191     esac
3192 fi
3193
3194 if test "$cpu" = host; then
3195     enabled cross_compile &&
3196         die "--cpu=host makes no sense when cross-compiling."
3197
3198     case "$cc_type" in
3199         gcc|llvm_gcc)
3200             check_native(){
3201                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3202                 sed -n "/cc1.*$1=/{
3203                             s/.*$1=\\([^ ]*\\).*/\\1/
3204                             p
3205                             q
3206                         }" $TMPE
3207             }
3208             cpu=$(check_native -march || check_native -mcpu)
3209         ;;
3210     esac
3211
3212     test "${cpu:-host}" = host &&
3213         die "--cpu=host not supported with compiler $cc"
3214 fi
3215
3216 # Deal with common $arch aliases
3217 case "$arch" in
3218     aarch64|arm64)
3219         arch="aarch64"
3220     ;;
3221     arm*)
3222         arch="arm"
3223     ;;
3224     mips*|IP*)
3225         arch="mips"
3226     ;;
3227     parisc*|hppa*)
3228         arch="parisc"
3229     ;;
3230     "Power Macintosh"|ppc*|powerpc*)
3231         arch="ppc"
3232     ;;
3233     s390|s390x)
3234         arch="s390"
3235     ;;
3236     sh4|sh)
3237         arch="sh4"
3238     ;;
3239     sun4u|sparc*)
3240         arch="sparc"
3241     ;;
3242     tilegx|tile-gx)
3243         arch="tilegx"
3244     ;;
3245     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3246         arch="x86"
3247     ;;
3248 esac
3249
3250 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3251 enable $arch
3252
3253 # Add processor-specific flags
3254 if enabled aarch64; then
3255
3256     case $cpu in
3257         armv*)
3258             cpuflags="-march=$cpu"
3259         ;;
3260         *)
3261             cpuflags="-mcpu=$cpu"
3262         ;;
3263     esac
3264
3265 elif enabled alpha; then
3266
3267     cpuflags="-mcpu=$cpu"
3268
3269 elif enabled arm; then
3270
3271     check_arm_arch() {
3272         check_cpp_condition stddef.h \
3273             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3274             $cpuflags
3275     }
3276
3277     probe_arm_arch() {
3278         if   check_arm_arch 4;        then echo armv4;
3279         elif check_arm_arch 4T;       then echo armv4t;
3280         elif check_arm_arch 5;        then echo armv5;
3281         elif check_arm_arch 5E;       then echo armv5e;
3282         elif check_arm_arch 5T;       then echo armv5t;
3283         elif check_arm_arch 5TE;      then echo armv5te;
3284         elif check_arm_arch 5TEJ;     then echo armv5te;
3285         elif check_arm_arch 6;        then echo armv6;
3286         elif check_arm_arch 6J;       then echo armv6j;
3287         elif check_arm_arch 6K;       then echo armv6k;
3288         elif check_arm_arch 6Z;       then echo armv6z;
3289         elif check_arm_arch 6ZK;      then echo armv6zk;
3290         elif check_arm_arch 6T2;      then echo armv6t2;
3291         elif check_arm_arch 7;        then echo armv7;
3292         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3293         elif check_arm_arch 7S;       then echo armv7-a;
3294         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3295         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3296         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3297         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3298         fi
3299     }
3300
3301     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3302
3303     case $cpu in
3304         armv*)
3305             cpuflags="-march=$cpu"
3306             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3307         ;;
3308         *)
3309             cpuflags="-mcpu=$cpu"
3310             case $cpu in
3311                 cortex-a*)                               subarch=armv7a  ;;
3312                 cortex-r*)                               subarch=armv7r  ;;
3313                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3314                 arm11*)                                  subarch=armv6   ;;
3315                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3316                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3317                 *)                             subarch=$(probe_arm_arch) ;;
3318             esac
3319         ;;
3320     esac
3321
3322     case "$subarch" in
3323         armv5t*)    enable fast_clz                ;;
3324         armv[6-8]*) enable fast_clz fast_unaligned ;;
3325     esac
3326
3327 elif enabled avr32; then
3328
3329     case $cpu in
3330         ap7[02]0[0-2])
3331             subarch="avr32_ap"
3332             cpuflags="-mpart=$cpu"
3333         ;;
3334         ap)
3335             subarch="avr32_ap"
3336             cpuflags="-march=$cpu"
3337         ;;
3338         uc3[ab]*)
3339             subarch="avr32_uc"
3340             cpuflags="-mcpu=$cpu"
3341         ;;
3342         uc)
3343             subarch="avr32_uc"
3344             cpuflags="-march=$cpu"
3345         ;;
3346     esac
3347
3348 elif enabled bfin; then
3349
3350     cpuflags="-mcpu=$cpu"
3351
3352 elif enabled mips; then
3353
3354     cpuflags="-march=$cpu"
3355
3356 elif enabled ppc; then
3357
3358     disable ldbrx
3359
3360     case $(tolower $cpu) in
3361         601|ppc601|powerpc601)
3362             cpuflags="-mcpu=601"
3363             disable altivec
3364         ;;
3365         603*|ppc603*|powerpc603*)
3366             cpuflags="-mcpu=603"
3367             disable altivec
3368         ;;
3369         604*|ppc604*|powerpc604*)
3370             cpuflags="-mcpu=604"
3371             disable altivec
3372         ;;
3373         g3|75*|ppc75*|powerpc75*)
3374             cpuflags="-mcpu=750"
3375             disable altivec
3376         ;;
3377         g4|745*|ppc745*|powerpc745*)
3378             cpuflags="-mcpu=7450"
3379             disable vsx
3380         ;;
3381         74*|ppc74*|powerpc74*)
3382             cpuflags="-mcpu=7400"
3383             disable vsx
3384         ;;
3385         g5|970|ppc970|powerpc970)
3386             cpuflags="-mcpu=970"
3387             disable vsx
3388         ;;
3389         power[3-6]*)
3390             cpuflags="-mcpu=$cpu"
3391             disable vsx
3392         ;;
3393         power[7-8]*)
3394             cpuflags="-mcpu=$cpu"
3395             enable ldbrx
3396         ;;
3397         cell)
3398             cpuflags="-mcpu=cell"
3399             enable ldbrx
3400             disable vsx
3401         ;;
3402         e500mc)
3403             cpuflags="-mcpu=e500mc"
3404             disable altivec
3405         ;;
3406         e500v2)
3407             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3408             disable altivec
3409             disable dcbzl
3410         ;;
3411         e500)
3412             cpuflags="-mcpu=8540 -mhard-float"
3413             disable altivec
3414             disable dcbzl
3415         ;;
3416     esac
3417
3418 elif enabled sparc; then
3419
3420     case $cpu in
3421         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3422             cpuflags="-mcpu=$cpu"
3423         ;;
3424         ultrasparc*|niagara[234])
3425             cpuflags="-mcpu=$cpu"
3426         ;;
3427     esac
3428
3429 elif enabled x86; then
3430
3431     case $cpu in
3432         i[345]86|pentium)
3433             cpuflags="-march=$cpu"
3434             disable i686
3435             disable mmx
3436         ;;
3437         # targets that do NOT support nopl and conditional mov (cmov)
3438         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3439             cpuflags="-march=$cpu"
3440             disable i686
3441         ;;
3442         # targets that do support nopl and conditional mov (cmov)
3443         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3444             cpuflags="-march=$cpu"
3445             enable i686
3446             enable fast_cmov
3447         ;;
3448         # targets that do support conditional mov but on which it's slow
3449         pentium4|pentium4m|prescott|nocona)
3450             cpuflags="-march=$cpu"
3451             enable i686
3452             disable fast_cmov
3453         ;;
3454     esac
3455
3456 fi
3457
3458 if [ "$cpu" != generic ]; then
3459     add_cflags  $cpuflags
3460     add_asflags $cpuflags
3461 fi
3462
3463 # compiler sanity check
3464 check_exec <<EOF
3465 int main(void){ return 0; }
3466 EOF
3467 if test "$?" != 0; then
3468     echo "$cc is unable to create an executable file."
3469     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3470         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3471         echo "Only do this if you know what cross compiling means."
3472     fi
3473     die "C compiler test failed."
3474 fi
3475
3476 add_cppflags -D_ISOC99_SOURCE
3477 check_cflags -std=c99
3478 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3479 #include <stdlib.h>
3480 EOF
3481 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3482 #include <stdlib.h>
3483 EOF
3484
3485 add_host_cppflags -D_ISOC99_SOURCE
3486 check_host_cflags -std=c99
3487 check_host_cflags -Wall
3488 check_host_cflags -O3
3489
3490 check_64bit(){
3491     arch32=$1
3492     arch64=$2
3493     expr=$3
3494     check_code cc "" "int test[2*($expr) - 1]" &&
3495         subarch=$arch64 || subarch=$arch32
3496 }
3497
3498 case "$arch" in
3499     aarch64|alpha|ia64)
3500         spic=$shared
3501     ;;
3502     mips)
3503         check_64bit mips mips64 '_MIPS_SIM > 1'
3504         spic=$shared
3505     ;;
3506     parisc)
3507         check_64bit parisc parisc64 'sizeof(void *) > 4'
3508         spic=$shared
3509     ;;
3510     ppc)
3511         check_64bit ppc ppc64 'sizeof(void *) > 4'
3512         spic=$shared
3513     ;;
3514     s390)
3515         check_64bit s390 s390x 'sizeof(void *) > 4'
3516         spic=$shared
3517     ;;
3518     sparc)
3519         check_64bit sparc sparc64 'sizeof(void *) > 4'
3520         spic=$shared
3521     ;;
3522     x86)
3523         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3524         if test "$subarch" = "x86_64"; then
3525             spic=$shared
3526         fi
3527     ;;
3528 esac
3529
3530 enable $subarch
3531 enabled spic && enable_weak pic
3532
3533 # OS specific
3534 case $target_os in
3535     aix)
3536         SHFLAGS=-shared
3537         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3538         enabled shared && add_ldflags -Wl,-brtl
3539         ;;
3540     android)
3541         disable symver
3542         enable section_data_rel_ro
3543         SLIB_INSTALL_NAME='$(SLIBNAME)'
3544         SLIB_INSTALL_LINKS=
3545         # soname not set on purpose
3546         SHFLAGS=-shared
3547         ;;
3548     haiku)
3549         prefix_default="/boot/common"
3550         network_extralibs="-lnetwork"
3551         host_libs=
3552         ;;
3553     sunos)
3554         SHFLAGS='-shared -Wl,-h,$$(@F)'
3555         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3556         network_extralibs="-lsocket -lnsl"
3557         # When using suncc to build, the Solaris linker will mark
3558         # an executable with each instruction set encountered by
3559         # the Solaris assembler.  As our libraries contain their own
3560         # guards for processor-specific code, instead suppress
3561         # generation of the HWCAPS ELF section on Solaris x86 only.
3562         enabled_all suncc x86 &&
3563             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3564             add_ldflags -Wl,-M,mapfile
3565         nm_default='nm -P -g'
3566         ;;
3567     netbsd)
3568         disable symver
3569         oss_indev_extralibs="-lossaudio"
3570         oss_outdev_extralibs="-lossaudio"
3571         ;;
3572     openbsd|bitrig)
3573         disable symver
3574         SHFLAGS='-shared'
3575         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3576         SLIB_INSTALL_LINKS=
3577         oss_indev_extralibs="-lossaudio"
3578         oss_outdev_extralibs="-lossaudio"
3579         ;;
3580     dragonfly)
3581         disable symver
3582         ;;
3583     freebsd)
3584         ;;
3585     bsd/os)
3586         add_extralibs -lpoll -lgnugetopt
3587         ;;
3588     darwin)
3589         enabled ppc && add_asflags -force_cpusubtype_ALL
3590         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3591         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3592         add_ldflags -Wl,-dynamic,-search_paths_first
3593         SLIBSUF=".dylib"
3594         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3595         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3596         objformat="macho"
3597         enabled x86_64 && objformat="macho64"
3598         enabled_any pic shared ||
3599             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3600         ;;
3601     mingw32*)
3602         if test $target_os = "mingw32ce"; then
3603             disable network
3604         else
3605             target_os=mingw32
3606         fi
3607         LIBTARGET=i386
3608         if enabled x86_64; then
3609             LIBTARGET="i386:x86-64"
3610         elif enabled arm; then
3611             LIBTARGET=arm-wince
3612         fi
3613         check_ldflags -Wl,--nxcompat
3614         check_ldflags -Wl,--dynamicbase
3615         shlibdir_default="$bindir_default"
3616         SLIBPREF=""
3617         SLIBSUF=".dll"
3618         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3619         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3620         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3621         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3622         SLIB_INSTALL_LINKS=
3623         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3624         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3625         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3626         objformat="win32"
3627         dlltool="${cross_prefix}dlltool"
3628         ranlib=:
3629         enable dos_paths
3630         ;;
3631     win32|win64)
3632         disable symver
3633         if enabled shared; then
3634             # Link to the import library instead of the normal static library
3635             # for shared libs.
3636             LD_LIB='%.lib'
3637             # Cannot build both shared and static libs with MSVC or icl.
3638             disable static
3639         fi
3640         shlibdir_default="$bindir_default"
3641         SLIBPREF=""
3642         SLIBSUF=".dll"
3643         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3644         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3645         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3646         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3647         SLIB_INSTALL_LINKS=
3648         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3649         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3650         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3651         objformat="win32"
3652         ranlib=:
3653         enable dos_paths
3654         ;;
3655     cygwin*)
3656         target_os=cygwin
3657         shlibdir_default="$bindir_default"
3658         SLIBPREF="cyg"
3659         SLIBSUF=".dll"
3660         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3661         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3662         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3663         SLIB_INSTALL_LINKS=
3664         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3665         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3666         objformat="win32"
3667         enable dos_paths
3668         ;;
3669     *-dos|freedos|opendos)
3670         network_extralibs="-lsocket"
3671         objformat="coff"
3672         enable dos_paths
3673         add_cppflags -U__STRICT_ANSI__
3674         ;;
3675     linux)
3676         enable dv1394
3677         enable section_data_rel_ro
3678         ;;
3679     irix*)
3680         target_os=irix
3681         ranlib="echo ignoring ranlib"
3682         ;;
3683     os/2*)
3684         ln_s="cp -f"
3685         objformat="aout"
3686         add_cppflags -D_GNU_SOURCE
3687         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3688         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3689         LIBSUF="_s.a"
3690         SLIBPREF=""
3691         SLIBSUF=".dll"
3692         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3693         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3694         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3695             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3696             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3697             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3698             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3699         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3700             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3701         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3702         enable dos_paths
3703         ;;
3704     gnu/kfreebsd)
3705         add_cppflags -D_BSD_SOURCE
3706         ;;
3707     gnu)
3708         ;;
3709     qnx)
3710         add_cppflags -D_QNX_SOURCE
3711         network_extralibs="-lsocket"
3712         ;;
3713     symbian)
3714         SLIBSUF=".dll"
3715         enable dos_paths
3716         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3717         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3718         add_ldflags -Wl,--target1-abs,--no-undefined \
3719                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3720                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3721         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3722                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3723                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3724         ;;
3725     osf1)
3726         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3727         ;;
3728     minix)
3729         ;;
3730     plan9)
3731         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3732                      -D_REENTRANT_SOURCE        \
3733                      -D_RESEARCH_SOURCE         \
3734                      -DFD_SETSIZE=96            \
3735                      -DHAVE_SOCK_OPTS
3736         add_compat strtod.o strtod=avpriv_strtod
3737         network_extralibs='-lbsd'
3738         exeobjs=compat/plan9/main.o
3739         cp_f='cp'
3740         ;;
3741     none)
3742         ;;
3743     *)
3744         die "Unknown OS '$target_os'."
3745         ;;
3746 esac
3747
3748 # determine libc flavour
3749
3750 probe_libc(){
3751     pfx=$1
3752     pfx_no_=${pfx%_}
3753     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3754     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3755         eval ${pfx}libc_type=uclibc
3756         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3757     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3758         eval ${pfx}libc_type=glibc
3759         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3760     # MinGW headers can be installed on Cygwin, so check for newlib first.
3761     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3762         eval ${pfx}libc_type=newlib
3763         add_${pfx}cppflags -U__STRICT_ANSI__
3764     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3765     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3766         eval ${pfx}libc_type=mingw64
3767         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3768         eval test \$${pfx_no_}cc_type = "gcc" &&
3769             add_${pfx}cppflags -D__printf__=__gnu_printf__
3770     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3771          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3772         eval ${pfx}libc_type=mingw32
3773         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3774             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3775             die "ERROR: MinGW32 runtime version must be >= 3.15."
3776         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3777         eval test \$${pfx_no_}cc_type = "gcc" &&
3778             add_${pfx}cppflags -D__printf__=__gnu_printf__
3779     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3780         eval ${pfx}libc_type=msvcrt
3781         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3782             if [ "$pfx" = host_ ]; then
3783                 add_host_cppflags -Dsnprintf=_snprintf
3784             else
3785                 add_compat strtod.o strtod=avpriv_strtod
3786                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3787                                              _snprintf=avpriv_snprintf  \
3788                                              vsnprintf=avpriv_vsnprintf
3789             fi
3790         fi
3791         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3792         # 0x601 by default unless something else is set by the user.
3793         # This can easily lead to us detecting functions only present
3794         # in such new versions and producing binaries requiring windows 7.0.
3795         # Therefore explicitly set the default to XP unless the user has
3796         # set something else on the command line.
3797         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
3798         # family. For these cases, configure is free to use any functions
3799         # found in the SDK headers by default. (Alternatively, we could force
3800         # _WIN32_WINNT to 0x0602 in that case.)
3801         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3802             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
3803 #ifdef WINAPI_FAMILY
3804 #include <winapifamily.h>
3805 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
3806 #error not desktop
3807 #endif
3808 #endif
3809 EOF
3810     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3811         eval ${pfx}libc_type=klibc
3812     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3813         eval ${pfx}libc_type=bionic
3814     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3815         eval ${pfx}libc_type=solaris
3816         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3817     else
3818         eval ${pfx}libc_type=default
3819         add_${pfx}cppflags -D_DEFAULT_SOURCE
3820     fi
3821 }
3822
3823 probe_libc
3824 test -n "$libc_type" && enable libc_$libc_type
3825 probe_libc host_
3826 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3827
3828 case $libc_type in
3829     bionic)
3830         add_compat strtod.o strtod=avpriv_strtod
3831         ;;
3832 esac
3833
3834 # hacks for compiler/libc/os combinations
3835
3836 if enabled_all tms470 libc_glibc; then
3837     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3838     add_cppflags -D__USER_LABEL_PREFIX__=
3839     add_cppflags -D__builtin_memset=memset
3840     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3841     add_cflags   -pds=48    # incompatible redefinition of macro
3842 fi
3843
3844 if enabled_all ccc libc_glibc; then
3845     add_ldflags -Wl,-z,now  # calls to libots crash without this
3846 fi
3847
3848 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3849     add_cppflags '-I\$(SRC_PATH)/compat/float'
3850
3851 esc(){
3852     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3853 }
3854
3855 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3856
3857 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3858
3859 set_default $PATHS_LIST
3860 set_default nm
3861
3862 # we need to build at least one lib type
3863 if ! enabled_any static shared; then
3864     cat <<EOF
3865 At least one library type must be built.
3866 Specify --enable-static to build the static libraries or --enable-shared to
3867 build the shared libraries as well. To only build the shared libraries specify
3868 --disable-static in addition to --enable-shared.
3869 EOF
3870     exit 1;
3871 fi
3872
3873 die_license_disabled() {
3874     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3875 }
3876
3877 die_license_disabled gpl libcdio
3878 die_license_disabled gpl libx264
3879 die_license_disabled gpl libx265
3880 die_license_disabled gpl libxavs
3881 die_license_disabled gpl libxvid
3882 die_license_disabled gpl x11grab
3883
3884 die_license_disabled nonfree libfaac
3885 die_license_disabled nonfree libfdk_aac
3886 die_license_disabled nonfree nvenc
3887 die_license_disabled nonfree openssl
3888
3889 die_license_disabled version3 libopencore_amrnb
3890 die_license_disabled version3 libopencore_amrwb
3891 die_license_disabled version3 libvo_aacenc
3892 die_license_disabled version3 libvo_amrwbenc
3893
3894 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3895
3896 disabled optimizations || check_cflags -fomit-frame-pointer
3897
3898 enable_weak_pic() {
3899     disabled pic && return
3900     enable pic
3901     add_cppflags -DPIC
3902     case "$target_os" in
3903     mingw*|cygwin*)
3904         ;;
3905     *)
3906         add_cflags -fPIC
3907         ;;
3908     esac
3909     add_asflags  -fPIC
3910 }
3911
3912 enabled pic && enable_weak_pic
3913
3914 check_cc <<EOF || die "Symbol mangling check failed."
3915 int ff_extern;
3916 EOF
3917 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3918 extern_prefix=${sym%%ff_extern*}
3919
3920 check_cc <<EOF && enable_weak inline_asm
3921 void foo(void) { __asm__ volatile ("" ::); }
3922 EOF
3923
3924 _restrict=
3925 for restrict_keyword in restrict __restrict__ __restrict; do
3926     check_cc <<EOF && _restrict=$restrict_keyword && break
3927 void foo(char * $restrict_keyword p);
3928 EOF
3929 done
3930
3931 check_cc <<EOF && enable pragma_deprecated
3932 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3933 EOF
3934
3935 check_cc <<EOF && enable attribute_packed
3936 struct { int x; } __attribute__((packed)) x;
3937 EOF
3938
3939 check_cc <<EOF && enable attribute_may_alias
3940 union { int x; } __attribute__((may_alias)) x;
3941 EOF
3942
3943 check_cc <<EOF || die "endian test failed"
3944 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3945 EOF
3946 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3947
3948 check_gas() {
3949     log "check_gas using '$as' as AS"
3950     # :vararg is used on aarch64, arm and ppc altivec
3951     check_as <<EOF || return 1
3952 .macro m n, y:vararg=0
3953 \n: .int \y
3954 .endm
3955 m x
3956 EOF
3957     # .altmacro is only used in arm asm
3958     ! enabled arm || check_as <<EOF || return 1
3959 .altmacro
3960 EOF
3961     enable gnu_as
3962     return 0
3963 }
3964
3965 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3966     nogas=:
3967     enabled_any arm aarch64 && nogas=die
3968     enabled_all ppc altivec && nogas=warn
3969     as_noop=-v
3970
3971     case $as_type in
3972         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3973         gcc)  gaspp_as_type=gas ;;
3974         *)    gaspp_as_type=$as_type ;;
3975     esac
3976
3977     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3978
3979     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3980         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3981
3982     if ! check_gas ; then
3983         as=${gas:=$as}
3984         check_gas || \
3985             $nogas "GNU assembler not found, install/update gas-preprocessor"
3986     fi
3987
3988     check_as <<EOF && enable as_func
3989 .func test
3990 .endfunc
3991 EOF
3992 fi
3993
3994 check_inline_asm inline_asm_labels '"1:\n"'
3995
3996 if enabled aarch64; then
3997     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3998     # internal assembler in clang 3.3 does not support this instruction
3999     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4000     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4001
4002     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4003
4004 elif enabled alpha; then
4005
4006     check_cflags -mieee
4007
4008 elif enabled arm; then
4009
4010     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4011     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4012     enabled thumb && check_cflags -mthumb || check_cflags -marm
4013
4014     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4015         enable vfp_args
4016     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4017         enable vfp_args
4018     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4019         case "${cross_prefix:-$cc}" in
4020             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4021             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4022 __asm__ (".eabi_attribute 28, 1");
4023 int main(void) { return 0; }
4024 EOF
4025         esac
4026         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4027     fi
4028
4029     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4030     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4031     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4032     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4033     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4034     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4035
4036     [ $target_os = linux ] || [ $target_os = android ] ||
4037         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4038             $ARCH_EXT_LIST_ARM
4039
4040     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4041
4042     check_as <<EOF && enable as_dn_directive
4043 ra .dn d0.i16
4044 .unreq ra
4045 EOF
4046
4047     # llvm's integrated assembler supports .object_arch from llvm 3.5
4048     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4049 .object_arch armv4
4050 EOF
4051
4052     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4053
4054 elif enabled mips; then
4055
4056     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4057
4058 elif enabled parisc; then
4059
4060     if enabled gcc; then
4061         case $($cc -dumpversion) in
4062             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4063         esac
4064     fi
4065
4066 elif enabled ppc; then
4067
4068     enable local_aligned_8 local_aligned_16
4069
4070     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4071     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4072     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4073     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4074
4075     # AltiVec flags: The FSF version of GCC differs from the Apple version
4076     if enabled altivec; then
4077         check_cflags -maltivec -mabi=altivec &&
4078         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4079         check_cflags -faltivec
4080
4081         # check if our compiler supports Motorola AltiVec C API
4082         check_cc <<EOF || disable altivec
4083 $inc_altivec_h
4084 int main(void) {
4085     vector signed int v1 = (vector signed int) { 0 };
4086     vector signed int v2 = (vector signed int) { 1 };
4087     v1 = vec_add(v1, v2);
4088     return 0;
4089 }
4090 EOF
4091
4092         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4093     fi
4094
4095     if enabled vsx; then
4096         check_cflags -mvsx &&
4097         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4098     fi
4099
4100     if enabled power8; then
4101         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4102     fi
4103
4104 elif enabled x86; then
4105
4106     check_builtin rdtsc    intrin.h   "__rdtsc()"
4107     check_builtin mm_empty mmintrin.h "_mm_empty()"
4108
4109     enable local_aligned_8 local_aligned_16
4110
4111     # check whether EBP is available on x86
4112     # As 'i' is stored on the stack, this program will crash
4113     # if the base pointer is used to access it because the
4114     # base pointer is cleared in the inline assembly code.
4115     check_exec_crash <<EOF && enable ebp_available
4116 volatile int i=0;
4117 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4118 return i;
4119 EOF
4120
4121     # check whether EBX is available on x86
4122     check_inline_asm ebx_available '""::"b"(0)' &&
4123         check_inline_asm ebx_available '"":::"%ebx"'
4124
4125     # check whether xmm clobbers are supported
4126     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4127
4128     # check whether binutils is new enough to compile SSSE3/MMXEXT
4129     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4130     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4131
4132     if ! disabled_any asm mmx yasm; then
4133         if check_cmd $yasmexe --version; then
4134             enabled x86_64 && yasm_extra="-m amd64"
4135             yasm_debug="-g dwarf2"
4136         elif check_cmd nasm -v; then
4137             yasmexe=nasm
4138             yasm_debug="-g -F dwarf"
4139             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4140         fi
4141
4142         YASMFLAGS="-f $objformat $yasm_extra"
4143         enabled pic               && append YASMFLAGS "-DPIC"
4144         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4145         case "$objformat" in
4146             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4147         esac
4148
4149         check_yasm "movbe ecx, [5]" && enable yasm ||
4150             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4151         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4152         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4153         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4154         check_yasm "CPU amdnop" || disable cpunop
4155     fi
4156
4157     case "$cpu" in
4158         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4159             disable fast_clz
4160         ;;
4161     esac
4162
4163 fi
4164
4165 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4166
4167 check_ldflags -Wl,--as-needed
4168
4169 if check_func dlopen; then
4170     ldl=
4171 elif check_func dlopen -ldl; then
4172     ldl=-ldl
4173 fi
4174
4175 if ! disabled network; then
4176     check_func getaddrinfo $network_extralibs
4177     check_func getservbyport $network_extralibs
4178     check_func inet_aton $network_extralibs
4179
4180     check_type netdb.h "struct addrinfo"
4181     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4182     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4183     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4184     check_type poll.h "struct pollfd"
4185     check_type netinet/sctp.h "struct sctp_event_subscribe"
4186     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4187     check_type netinet/in.h "struct sockaddr_in6"
4188     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4189     check_type "sys/types.h sys/socket.h" socklen_t
4190
4191     # Prefer arpa/inet.h over winsock2
4192     if check_header arpa/inet.h ; then
4193         check_func closesocket
4194     elif check_header winsock2.h ; then
4195         check_func_headers winsock2.h closesocket -lws2 &&
4196             network_extralibs="-lws2" ||
4197         { check_func_headers winsock2.h closesocket -lws2_32 &&
4198             network_extralibs="-lws2_32"; } || disable winsock2_h network
4199         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4200
4201         check_type ws2tcpip.h socklen_t
4202         check_type ws2tcpip.h "struct addrinfo"
4203         check_type ws2tcpip.h "struct group_source_req"
4204         check_type ws2tcpip.h "struct ip_mreq_source"
4205         check_type ws2tcpip.h "struct ipv6_mreq"
4206         check_type winsock2.h "struct pollfd"
4207         check_struct winsock2.h "struct sockaddr" sa_len
4208         check_type ws2tcpip.h "struct sockaddr_in6"
4209         check_type ws2tcpip.h "struct sockaddr_storage"
4210     else
4211         disable network
4212     fi
4213 fi
4214
4215 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4216 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4217 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4218 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4219
4220 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4221 check_func  ${malloc_prefix}memalign            && enable memalign
4222 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4223
4224 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4225     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4226
4227 check_func  fcntl
4228 check_func  fork
4229 check_func  gethrtime
4230 check_func  getopt
4231 check_func  getrusage
4232 check_func  gettimeofday
4233 check_func  gmtime_r
4234 check_func  isatty
4235 check_func  localtime_r
4236 check_func  mach_absolute_time
4237 check_func  mkstemp
4238 check_func  mmap
4239 check_func  mprotect
4240 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4241 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4242 check_func  sched_getaffinity
4243 check_func  setrlimit
4244 check_func  strerror_r
4245 check_func  sysconf
4246 check_func  sysctl
4247 check_func  usleep
4248
4249 check_func_headers io.h setmode
4250 check_func_headers stdlib.h getenv
4251
4252 check_func_headers windows.h CoTaskMemFree -lole32
4253 check_func_headers windows.h GetProcessAffinityMask
4254 check_func_headers windows.h GetProcessTimes
4255 check_func_headers windows.h GetSystemTimeAsFileTime
4256 check_func_headers windows.h LoadLibrary
4257 check_func_headers windows.h MapViewOfFile
4258 check_func_headers windows.h SetConsoleTextAttribute
4259 check_func_headers windows.h Sleep
4260 check_func_headers windows.h VirtualAlloc
4261 check_struct windows.h "CONDITION_VARIABLE" Ptr
4262
4263 check_header direct.h
4264 check_header dlfcn.h
4265 check_header d3d11.h
4266 check_header dxva.h
4267 check_header dxva2api.h
4268 check_header io.h
4269 check_header mach/mach_time.h
4270 check_header malloc.h
4271 check_header poll.h
4272 check_header sys/mman.h
4273 check_header sys/param.h
4274 check_header sys/resource.h
4275 check_header sys/select.h
4276 check_header sys/time.h
4277 check_header sys/un.h
4278 check_header unistd.h
4279 check_header valgrind/valgrind.h
4280 check_header vdpau/vdpau.h
4281 check_header vdpau/vdpau_x11.h
4282 check_header VideoDecodeAcceleration/VDADecoder.h
4283 check_header windows.h
4284 check_header X11/extensions/XvMClib.h
4285
4286 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4287 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4288 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4289
4290 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4291
4292 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4293 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4294 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4295
4296 if ! disabled w32threads && ! enabled pthreads; then
4297     check_func_headers "windows.h process.h" _beginthreadex &&
4298         enable w32threads || disable w32threads
4299 fi
4300
4301 # check for some common methods of building with pthread support
4302 # do this before the optional library checks as some of them require pthreads
4303 if ! disabled pthreads && ! enabled w32threads; then
4304     enable pthreads
4305     if check_func pthread_join -pthread; then
4306         add_cflags -pthread
4307         add_extralibs -pthread
4308     elif check_func pthread_join -pthreads; then
4309         add_cflags -pthreads
4310         add_extralibs -pthreads
4311     elif check_func pthread_join -lpthreadGC2; then
4312         add_extralibs -lpthreadGC2
4313     elif check_lib pthread.h pthread_join -lpthread; then
4314         :
4315     elif ! check_func pthread_join; then
4316         disable pthreads
4317     fi
4318 fi
4319
4320 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4321 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4322
4323 check_lib math.h sin -lm && LIBM="-lm"
4324 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4325
4326 atan2f_args=2
4327 ldexpf_args=2
4328 powf_args=2
4329
4330 for func in $MATH_FUNCS; do
4331     eval check_mathfunc $func \${${func}_args:-1}
4332 done
4333
4334 # these are off by default, so fail if requested and not available
4335 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4336                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4337                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4338 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4339 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4340 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4341 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4342 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4343 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4344 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4345 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4346 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4347                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4348                                done || die "ERROR: libgsm not found"; }
4349 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4350 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4351 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4352 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4353 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4354 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4355 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4356 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4357                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4358 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4359 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4360 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4361 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4362 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4363 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4364 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4365 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4366 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4367 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4368 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4369 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4370     enabled libvpx_vp8_decoder && {
4371         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4372             disable libvpx_vp8_decoder;
4373     }
4374     enabled libvpx_vp8_encoder && {
4375         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4376             disable libvpx_vp8_encoder;
4377     }
4378     enabled libvpx_vp9_decoder && {
4379         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4380             disable libvpx_vp9_decoder;
4381     }
4382     enabled libvpx_vp9_encoder && {
4383         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4384             disable libvpx_vp9_encoder;
4385     }
4386     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4387         die "libvpx enabled but no supported decoders found"
4388     fi
4389 }
4390 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4391 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4392 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4393                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4394                                die "ERROR: libx264 version must be >= 0.118."; } &&
4395                              { check_cpp_condition x264.h "X264_MPEG2" &&
4396                                enable libx262; }
4397 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4398                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4399                                die "ERROR: libx265 version must be >= 57."; }
4400 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4401 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4402 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4403                                 { ! enabled cross_compile && {
4404                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4405                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4406                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4407                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4408                                die "ERROR: mmal not found"; }
4409 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4410                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4411                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4412                                die "ERROR: openssl not found"; }
4413
4414 if enabled gnutls; then
4415     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4416     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4417 fi
4418
4419 # libdc1394 check
4420 if enabled libdc1394; then
4421     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4422         enable libdc1394_2; } ||
4423     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4424         enable libdc1394_1; } ||
4425     die "ERROR: No version of libdc1394 found "
4426 fi
4427
4428 if enabled nvenc; then
4429     check_header cuda.h || die "ERROR: cuda.h not found.";
4430     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found.";
4431     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
4432         die "ERROR: NVENC API version 4 or older is not supported";
4433 fi
4434
4435 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4436     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4437     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4438     enable sdl
4439 fi
4440
4441 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4442 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4443
4444 check_header linux/fb.h
4445 check_header linux/videodev2.h
4446 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4447
4448 check_header sys/videoio.h
4449
4450 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4451 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4452 # w32api 3.12 had it defined wrong
4453 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4454
4455 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4456 { check_header dev/bktr/ioctl_meteor.h &&
4457   check_header dev/bktr/ioctl_bt848.h; } ||
4458 { check_header machine/ioctl_meteor.h &&
4459   check_header machine/ioctl_bt848.h; } ||
4460 { check_header dev/video/meteor/ioctl_meteor.h &&
4461   check_header dev/video/bktr/ioctl_bt848.h; } ||
4462 check_header dev/ic/bt8xx.h
4463
4464 check_header sndio.h
4465 check_header sys/soundcard.h
4466 check_header soundcard.h
4467
4468 enabled_any alsa_indev alsa_outdev &&
4469     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4470
4471 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4472     check_func jack_port_get_latency_range -ljack
4473
4474 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4475
4476 if enabled libcdio; then
4477     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4478     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4479     die "ERROR: No usable libcdio/cdparanoia found"
4480 fi
4481
4482 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4483
4484 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
4485     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4486         enabled libxcb && die "ERROR: libxcb not found";
4487     } && disable x11grab && enable libxcb
4488
4489     disabled libxcb_shm ||
4490         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4491             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4492         } && check_header sys/shm.h && enable libxcb_shm
4493
4494     disabled libxcb_xfixes ||
4495         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4496             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4497         } && enable libxcb_xfixes
4498
4499     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4500     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4501 fi
4502
4503 if enabled x11grab; then
4504     enabled xlib || die "ERROR: Xlib not found"
4505     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
4506     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4507 fi
4508
4509 enabled vaapi && enabled xlib &&
4510     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4511     enable vaapi_x11
4512
4513 enabled vdpau &&
4514     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4515     disable vdpau
4516
4517 enabled vdpau && enabled xlib &&
4518     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4519     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4520     enable vdpau_x11
4521
4522 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4523
4524 # add some useful compiler flags if supported
4525 check_cflags -Wdeclaration-after-statement
4526 check_cflags -Wall
4527 check_cflags -Wdisabled-optimization
4528 check_cflags -Wpointer-arith
4529 check_cflags -Wredundant-decls
4530 check_cflags -Wcast-qual
4531 check_cflags -Wwrite-strings
4532 check_cflags -Wtype-limits
4533 check_cflags -Wundef
4534 check_cflags -Wmissing-prototypes
4535 check_cflags -Wstrict-prototypes
4536 enabled extra_warnings && check_cflags -Winline
4537
4538 check_disable_warning(){
4539     warning_flag=-W${1#-Wno-}
4540     test_cflags $warning_flag && add_cflags $1
4541 }
4542
4543 check_disable_warning -Wno-parentheses
4544 check_disable_warning -Wno-switch
4545 check_disable_warning -Wno-format-zero-length
4546 check_disable_warning -Wno-pointer-sign
4547
4548 # add some linker flags
4549 check_ldflags -Wl,--warn-common
4550 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4551 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4552 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4553
4554 # add some strip flags
4555 # -wN '..@*' is more selective than -x, but not available everywhere.
4556 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4557
4558 enabled neon_clobber_test &&
4559     check_ldflags -Wl,--wrap,avcodec_open2              \
4560                   -Wl,--wrap,avcodec_decode_audio4      \
4561                   -Wl,--wrap,avcodec_decode_video2      \
4562                   -Wl,--wrap,avcodec_decode_subtitle2   \
4563                   -Wl,--wrap,avcodec_encode_audio2      \
4564                   -Wl,--wrap,avcodec_encode_video2      \
4565                   -Wl,--wrap,avcodec_encode_subtitle    \
4566                   -Wl,--wrap,avresample_convert ||
4567     disable neon_clobber_test
4568
4569 enabled xmm_clobber_test &&
4570     check_ldflags -Wl,--wrap,avcodec_open2              \
4571                   -Wl,--wrap,avcodec_decode_audio4      \
4572                   -Wl,--wrap,avcodec_decode_video2      \
4573                   -Wl,--wrap,avcodec_decode_subtitle2   \
4574                   -Wl,--wrap,avcodec_encode_audio2      \
4575                   -Wl,--wrap,avcodec_encode_video2      \
4576                   -Wl,--wrap,avcodec_encode_subtitle    \
4577                   -Wl,--wrap,avresample_convert         \
4578                   -Wl,--wrap,sws_scale ||
4579     disable xmm_clobber_test
4580
4581 echo "X{};" > $TMPV
4582 if test_ldflags -Wl,--version-script,$TMPV; then
4583     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4584     check_cc <<EOF && enable symver_asm_label
4585 void ff_foo(void) __asm__ ("av_foo@VERSION");
4586 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4587 EOF
4588     check_cc <<EOF && enable symver_gnu_asm
4589 __asm__(".symver ff_foo,av_foo@VERSION");
4590 void ff_foo(void) {}
4591 EOF
4592 fi
4593
4594 if [ -z "$optflags" ]; then
4595     if enabled small; then
4596         optflags=$cflags_size
4597     elif enabled optimizations; then
4598         optflags=$cflags_speed
4599     else
4600         optflags=$cflags_noopt
4601     fi
4602 fi
4603
4604 check_optflags(){
4605     check_cflags "$@"
4606     enabled lto && check_ldflags "$@"
4607 }
4608
4609
4610 if enabled lto; then
4611     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4612     check_cflags  -flto
4613     check_ldflags -flto $cpuflags
4614 fi
4615
4616 check_optflags $optflags
4617 check_optflags -fno-math-errno
4618 check_optflags -fno-signed-zeros
4619
4620 if enabled icc; then
4621     # Just warnings, no remarks
4622     check_cflags -w1
4623     # -wd: Disable following warnings
4624     # 144, 167, 556: -Wno-pointer-sign
4625     # 1292: attribute "foo" ignored
4626     # 1419: external declaration in primary source file
4627     # 10006: ignoring unknown option -fno-signed-zeros
4628     # 10148: ignoring unknown option -Wno-parentheses
4629     # 10156: ignoring option '-W'; no argument required
4630     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4631     # 11030: Warning unknown option --as-needed
4632     # 10156: ignoring option '-export'; no argument required
4633     check_ldflags -wd10156,11030
4634     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4635     enable ebp_available
4636     if enabled x86_32; then
4637         icc_version=$($cc -dumpversion)
4638         test ${icc_version%%.*} -ge 11 &&
4639             check_cflags -falign-stack=maintain-16-byte ||
4640             disable aligned_stack
4641     fi
4642 elif enabled ccc; then
4643     # disable some annoying warnings
4644     add_cflags -msg_disable bitnotint
4645     add_cflags -msg_disable mixfuncvoid
4646     add_cflags -msg_disable nonstandcast
4647     add_cflags -msg_disable unsupieee
4648 elif enabled gcc; then
4649     check_optflags -fno-tree-vectorize
4650     check_cflags -Werror=implicit-function-declaration
4651     check_cflags -Werror=missing-prototypes
4652     check_cflags -Werror=return-type
4653     check_cflags -Werror=declaration-after-statement
4654     check_cflags -Werror=vla
4655     check_cflags -Werror=format-security
4656     check_cflags -fdiagnostics-color=auto
4657     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4658 elif enabled llvm_gcc; then
4659     check_cflags -mllvm -stack-alignment=16
4660 elif enabled clang; then
4661     check_cflags -mllvm -stack-alignment=16
4662     check_cflags -Qunused-arguments
4663     check_cflags -Werror=implicit-function-declaration
4664     check_cflags -Werror=missing-prototypes
4665     check_cflags -Werror=return-type
4666 elif enabled cparser; then
4667     add_cflags -Wno-missing-variable-declarations
4668     add_cflags -Wno-empty-statement
4669 elif enabled armcc; then
4670     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4671     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4672     # 2523: use of inline assembly is deprecated
4673     add_cflags -W${armcc_opt},--diag_suppress=2523
4674     add_cflags -W${armcc_opt},--diag_suppress=1207
4675     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4676     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4677     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4678     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4679 elif enabled tms470; then
4680     add_cflags -pds=824 -pds=837
4681     disable inline_asm
4682 elif enabled pathscale; then
4683     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4684 elif enabled_any msvc icl; then
4685     enabled x86_32 && disable aligned_stack
4686     enabled_all x86_32 debug && add_cflags -Oy-
4687     enabled debug && add_ldflags -debug
4688     enable pragma_deprecated
4689     if enabled icl; then
4690         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4691         # (correctly) on icl 13.x.
4692         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4693             add_cflags -Qansi-alias
4694         # icl will pass the inline asm tests but inline asm is currently
4695         # not supported (build will fail)
4696         disable inline_asm
4697     fi
4698     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
4699     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
4700     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
4701     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
4702     # (as it ends up if the restrict redefine is done before including stdlib.h), while
4703     # MSVC 2013 and newer can handle it fine.
4704     # If this declspec fails, force including stdlib.h before the restrict redefinition
4705     # happens in config.h.
4706     if [ $_restrict != restrict ]; then
4707         check_cc <<EOF || add_cflags -FIstdlib.h
4708 __declspec($_restrict) void* foo(int);
4709 EOF
4710     fi
4711     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4712 fi
4713
4714 for pfx in "" host_; do
4715     varname=${pfx%_}cc_type
4716     eval "type=\$$varname"
4717     if [ $type = "msvc" ]; then
4718         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
4719 static inline int foo(int a) { return a; }
4720 EOF
4721     fi
4722 done
4723
4724 case $as_type in
4725     clang)
4726         add_asflags -Qunused-arguments
4727     ;;
4728 esac
4729
4730 case $ld_type in
4731     clang)
4732         check_ldflags -Qunused-arguments
4733     ;;
4734 esac
4735
4736 case $target_os in
4737     osf1)
4738         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4739     ;;
4740     plan9)
4741         add_cppflags -Dmain=plan9_main
4742     ;;
4743 esac
4744
4745 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4746
4747 check_deps $CONFIG_LIST       \
4748            $CONFIG_EXTRA      \
4749            $HAVE_LIST         \
4750            $ALL_COMPONENTS    \
4751
4752 enabled_all dxva2 CoTaskMemFree &&
4753     prepend avconv_libs $($ldflags_filter "-lole32") &&
4754     enable dxva2_lib
4755
4756 ! enabled_any memalign posix_memalign aligned_malloc &&
4757     enabled simd_align_16 && enable memalign_hack
4758
4759 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
4760
4761 for thread in $THREADS_LIST; do
4762     if enabled $thread; then
4763         test -n "$thread_type" &&
4764             die "ERROR: Only one thread type must be selected." ||
4765             thread_type="$thread"
4766     fi
4767 done
4768
4769 enabled zlib && add_cppflags -DZLIB_CONST
4770
4771 # conditional library dependencies, in linking order
4772 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4773 enabled resample_filter && prepend avfilter_deps "avresample"
4774 enabled scale_filter    && prepend avfilter_deps "swscale"
4775
4776 enabled opus_decoder    && prepend avcodec_deps "avresample"
4777
4778 expand_deps(){
4779     lib_deps=${1}_deps
4780     eval "deps=\$$lib_deps"
4781     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4782     unique $lib_deps
4783 }
4784
4785 map 'expand_deps $v' $LIBRARY_LIST
4786
4787 echo "install prefix            $prefix"
4788 echo "source path               $source_path"
4789 echo "C compiler                $cc"
4790 echo "C library                 $libc_type"
4791 if test "$host_cc" != "$cc"; then
4792     echo "host C compiler           $host_cc"
4793     echo "host C library            $host_libc_type"
4794 fi
4795 echo "ARCH                      $arch ($cpu)"
4796 if test "$build_suffix" != ""; then
4797     echo "build suffix              $build_suffix"
4798 fi
4799 if test "$extra_version" != ""; then
4800     echo "version string suffix     $extra_version"
4801 fi
4802 echo "big-endian                ${bigendian-no}"
4803 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4804 if enabled x86; then
4805     echo "${yasmexe}                      ${yasm-no}"
4806     echo "MMX enabled               ${mmx-no}"
4807     echo "MMXEXT enabled            ${mmxext-no}"
4808     echo "3DNow! enabled            ${amd3dnow-no}"
4809     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4810     echo "SSE enabled               ${sse-no}"
4811     echo "SSSE3 enabled             ${ssse3-no}"
4812     echo "AVX enabled               ${avx-no}"
4813     echo "XOP enabled               ${xop-no}"
4814     echo "FMA3 enabled              ${fma3-no}"
4815     echo "FMA4 enabled              ${fma4-no}"
4816     echo "i686 features enabled     ${i686-no}"
4817     echo "CMOV is fast              ${fast_cmov-no}"
4818     echo "EBX available             ${ebx_available-no}"
4819     echo "EBP available             ${ebp_available-no}"
4820 fi
4821 if enabled aarch64; then
4822     echo "NEON enabled              ${neon-no}"
4823     echo "VFP enabled               ${vfp-no}"
4824 fi
4825 if enabled arm; then
4826     echo "ARMv5TE enabled           ${armv5te-no}"
4827     echo "ARMv6 enabled             ${armv6-no}"
4828     echo "ARMv6T2 enabled           ${armv6t2-no}"
4829     echo "VFP enabled               ${vfp-no}"
4830     echo "NEON enabled              ${neon-no}"
4831 fi
4832 if enabled ppc; then
4833     echo "AltiVec enabled           ${altivec-no}"
4834     echo "VSX enabled               ${vsx-no}"
4835     echo "POWER8 enabled            ${power8-no}"
4836     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4837     echo "dcbzl available           ${dcbzl-no}"
4838 fi
4839 echo "debug symbols             ${debug-no}"
4840 echo "optimize for size         ${small-no}"
4841 echo "optimizations             ${optimizations-no}"
4842 echo "static                    ${static-no}"
4843 echo "shared                    ${shared-no}"
4844 echo "new filter support        ${avfilter-no}"
4845 echo "network support           ${network-no}"
4846 echo "threading support         ${thread_type-no}"
4847 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4848 echo "SDL support               ${sdl-no}"
4849 test -n "$random_seed" &&
4850     echo "random seed               ${random_seed}"
4851 echo
4852
4853 echo "External libraries:"
4854 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4855 echo
4856
4857 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4858     echo "Enabled ${type}s:"
4859     eval list=\$$(toupper $type)_LIST
4860     print_enabled '_*' $list | print_3_columns
4861     echo
4862 done
4863
4864 license="LGPL version 2.1 or later"
4865 if enabled nonfree; then
4866     license="nonfree and unredistributable"
4867 elif enabled gplv3; then
4868     license="GPL version 3 or later"
4869 elif enabled lgplv3; then
4870     license="LGPL version 3 or later"
4871 elif enabled gpl; then
4872     license="GPL version 2 or later"
4873 fi
4874
4875 echo "License: $license"
4876
4877 echo "Creating config.mak and config.h..."
4878
4879 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4880
4881 config_files="$TMPH config.mak"
4882
4883 cat > config.mak <<EOF
4884 # Automatically generated by configure - do not modify!
4885 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4886 prefix=$prefix
4887 LIBDIR=\$(DESTDIR)$libdir
4888 SHLIBDIR=\$(DESTDIR)$shlibdir
4889 INCDIR=\$(DESTDIR)$incdir
4890 BINDIR=\$(DESTDIR)$bindir
4891 DATADIR=\$(DESTDIR)$datadir
4892 DOCDIR=\$(DESTDIR)$docdir
4893 MANDIR=\$(DESTDIR)$mandir
4894 SRC_PATH=$source_path
4895 CC_IDENT=$cc_ident
4896 ARCH=$arch
4897 INTRINSICS=$intrinsics
4898 CC=$cc
4899 AS=$as
4900 LD=$ld
4901 DEPCC=$dep_cc
4902 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4903 DEPAS=$as
4904 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4905 YASM=$yasmexe
4906 DEPYASM=$yasmexe
4907 AR=$ar
4908 ARFLAGS=$arflags
4909 AR_O=$ar_o
4910 RANLIB=$ranlib
4911 STRIP=$strip
4912 LN_S=$ln_s
4913 CPPFLAGS=$CPPFLAGS
4914 CFLAGS=$CFLAGS
4915 ASFLAGS=$ASFLAGS
4916 AS_C=$AS_C
4917 AS_O=$AS_O
4918 CC_C=$CC_C
4919 CC_E=$CC_E
4920 CC_O=$CC_O
4921 LD_O=$LD_O
4922 LD_LIB=$LD_LIB
4923 LD_PATH=$LD_PATH
4924 DLLTOOL=$dlltool
4925 LDFLAGS=$LDFLAGS
4926 LDEXEFLAGS=$LDEXEFLAGS
4927 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4928 STRIPFLAGS=$STRIPFLAGS
4929 YASMFLAGS=$YASMFLAGS
4930 BUILDSUF=$build_suffix
4931 FULLNAME=$FULLNAME
4932 LIBPREF=$LIBPREF
4933 LIBSUF=$LIBSUF
4934 LIBNAME=$LIBNAME
4935 SLIBPREF=$SLIBPREF
4936 SLIBSUF=$SLIBSUF
4937 EXESUF=$EXESUF
4938 EXTRA_VERSION=$extra_version
4939 CCDEP=$CCDEP
4940 CCDEP_FLAGS=$CCDEP_FLAGS
4941 ASDEP=$ASDEP
4942 ASDEP_FLAGS=$ASDEP_FLAGS
4943 CC_DEPFLAGS=$CC_DEPFLAGS
4944 AS_DEPFLAGS=$AS_DEPFLAGS
4945 HOSTCC=$host_cc
4946 HOSTLD=$host_ld
4947 HOSTCFLAGS=$host_cflags
4948 HOSTCPPFLAGS=$host_cppflags
4949 HOSTEXESUF=$HOSTEXESUF
4950 HOSTLDFLAGS=$host_ldflags
4951 HOSTLIBS=$host_libs
4952 DEPHOSTCC=$host_cc
4953 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4954 HOSTCCDEP=$HOSTCCDEP
4955 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4956 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4957 HOSTCC_C=$HOSTCC_C
4958 HOSTCC_O=$HOSTCC_O
4959 HOSTLD_O=$HOSTLD_O
4960 TARGET_EXEC=$target_exec $target_exec_args
4961 TARGET_PATH=$target_path
4962 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4963 CFLAGS-avplay=$sdl_cflags
4964 ZLIB=$($ldflags_filter -lz)
4965 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4966 EXTRALIBS=$extralibs
4967 COMPAT_OBJS=$compat_objs
4968 EXEOBJS=$exeobjs
4969 INSTALL=install
4970 LIBTARGET=${LIBTARGET}
4971 SLIBNAME=${SLIBNAME}
4972 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4973 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4974 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4975 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4976 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4977 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4978 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4979 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4980 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4981 EOF
4982
4983 get_version(){
4984     lcname=lib${1}
4985     name=$(toupper $lcname)
4986     file=$source_path/$lcname/version.h
4987     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4988     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4989     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4990     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4991     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4992 }
4993
4994 map 'get_version $v' $LIBRARY_LIST
4995
4996 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4997
4998 print_program_libs(){
4999     eval "program_libs=\$${1}_libs"
5000     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5001 }
5002
5003 map 'print_program_libs $v' $PROGRAM_LIST
5004
5005 cat > $TMPH <<EOF
5006 /* Automatically generated by configure - do not modify! */
5007 #ifndef LIBAV_CONFIG_H
5008 #define LIBAV_CONFIG_H
5009 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
5010 #define LIBAV_LICENSE "$(c_escape $license)"
5011 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5012 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5013 #define restrict $_restrict
5014 #define EXTERN_PREFIX "${extern_prefix}"
5015 #define EXTERN_ASM ${extern_prefix}
5016 #define SLIBSUF "$SLIBSUF"
5017 EOF
5018
5019 test -n "$malloc_prefix" &&
5020     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5021
5022 if enabled yasm; then
5023     append config_files $TMPASM
5024     printf '' >$TMPASM
5025 fi
5026
5027 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5028
5029 print_config ARCH_   "$config_files" $ARCH_LIST
5030 print_config HAVE_   "$config_files" $HAVE_LIST
5031 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5032                                      $CONFIG_EXTRA      \
5033                                      $ALL_COMPONENTS    \
5034
5035 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
5036
5037 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5038 cp_if_changed $TMPH config.h
5039 touch .config
5040
5041 enabled yasm && cp_if_changed $TMPASM config.asm
5042
5043 cat > $TMPH <<EOF
5044 /* Generated by ffconf */
5045 #ifndef AVUTIL_AVCONFIG_H
5046 #define AVUTIL_AVCONFIG_H
5047 EOF
5048
5049 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5050
5051 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5052
5053 cp_if_changed $TMPH libavutil/avconfig.h
5054
5055 test -n "$WARNINGS" && printf "\n$WARNINGS"
5056
5057 # build pkg-config files
5058
5059 lib_version(){
5060     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
5061 }
5062
5063 pkgconfig_generate(){
5064     name=$1
5065     shortname=${name#lib}${build_suffix}
5066     comment=$2
5067     version=$3
5068     libs=$4
5069     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5070     requires=${requires%, }
5071     enabled ${name#lib} || return 0
5072     mkdir -p $name
5073     cat <<EOF > $name/$name.pc
5074 prefix=$prefix
5075 exec_prefix=\${prefix}
5076 libdir=$libdir
5077 includedir=$incdir
5078
5079 Name: $name
5080 Description: $comment
5081 Version: $version
5082 Requires: $(enabled shared || echo $requires)
5083 Requires.private: $(enabled shared && echo $requires)
5084 Conflicts:
5085 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
5086 Libs.private: $(enabled shared && echo $libs)
5087 Cflags: -I\${includedir}
5088 EOF
5089     cat <<EOF > $name/$name-uninstalled.pc
5090 prefix=
5091 exec_prefix=
5092 libdir=\${pcfiledir}
5093 includedir=${source_path}
5094
5095 Name: $name
5096 Description: $comment
5097 Version: $version
5098 Requires: $requires
5099 Conflicts:
5100 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
5101 Cflags: -I\${includedir}
5102 EOF
5103 }
5104
5105 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
5106 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
5107 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
5108 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
5109 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
5110 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$LIBM"
5111 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"