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 Individual component options:
 136   --disable-everything     disable all components listed below
 137   --disable-encoder=NAME   disable encoder NAME
 138   --enable-encoder=NAME    enable encoder NAME
 139   --disable-encoders       disable all encoders
 140   --disable-decoder=NAME   disable decoder NAME
 141   --enable-decoder=NAME    enable decoder NAME
 142   --disable-decoders       disable all decoders
 143   --disable-hwaccel=NAME   disable hwaccel NAME
 144   --enable-hwaccel=NAME    enable hwaccel NAME
 145   --disable-hwaccels       disable all hwaccels
 146   --disable-muxer=NAME     disable muxer NAME
 147   --enable-muxer=NAME      enable muxer NAME
 148   --disable-muxers         disable all muxers
 149   --disable-demuxer=NAME   disable demuxer NAME
 150   --enable-demuxer=NAME    enable demuxer NAME
 151   --disable-demuxers       disable all demuxers
 152   --enable-parser=NAME     enable parser NAME
 153   --disable-parser=NAME    disable parser NAME
 154   --disable-parsers        disable all parsers
 155   --enable-bsf=NAME        enable bitstream filter NAME
 156   --disable-bsf=NAME       disable bitstream filter NAME
 157   --disable-bsfs           disable all bitstream filters
 158   --enable-protocol=NAME   enable protocol NAME
 159   --disable-protocol=NAME  disable protocol NAME
 160   --disable-protocols      disable all protocols
 161   --enable-indev=NAME      enable input device NAME
 162   --disable-indev=NAME     disable input device NAME
 163   --disable-indevs         disable input devices
 164   --enable-outdev=NAME     enable output device NAME
 165   --disable-outdev=NAME    disable output device NAME
 166   --disable-outdevs        disable output devices
 167   --disable-devices        disable all devices
 168   --enable-filter=NAME     enable filter NAME
 169   --disable-filter=NAME    disable filter NAME
 170   --disable-filters        disable all filters
 171
 172 External library support:
 173
 174   Using any of the following switches will allow Libav to link to the
 175   corresponding external library. All the components depending on that library
 176   will become enabled, if all their other dependencies are met and they are not
 177   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 178   libwavpack and allow the libwavpack encoder to be built, unless it is
 179   specifically disabled with --disable-encoder=libwavpack.
 180
 181   Note that only the system libraries are auto-detected. All the other external
 182   libraries must be explicitly enabled.
 183
 184   Also note that the following help text describes the purpose of the libraries
 185   themselves, not all their features will necessarily be usable by Libav.
 186
 187   --enable-avisynth          video frameserver
 188   --enable-bzlib             bzip2 compression [autodetect]
 189   --enable-frei0r            video filtering plugins
 190   --enable-gnutls            crypto
 191   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
 192   --enable-libcdio           audio CD input
 193   --enable-libdc1394         IEEE 1394/Firewire camera input
 194   --enable-libdcadec         DCA audio decoding
 195   --enable-libfaac           AAC audio encoding
 196   --enable-libfdk-aac        AAC audio encoding/decoding
 197   --enable-libfontconfig     font configuration and management
 198   --enable-libfreetype       font rendering
 199   --enable-libgsm            GSM audio encoding/decoding
 200   --enable-libilbc           ILBC audio encoding/decoding
 201   --enable-libkvazaar        HEVC video encoding
 202   --enable-libmp3lame        MP3 audio encoding
 203   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
 204   --enable-libopencore-amrwb AMR-WB audio decoding
 205   --enable-libopencv         computer vision
 206   --enable-libopenh264       H.264 video encoding/decoding
 207   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
 208   --enable-libopus           Opus audio encoding/decoding
 209   --enable-libpulse          Pulseaudio sound server
 210   --enable-librtmp           RTMP streaming
 211   --enable-libschroedinger   Dirac video encoding/decoding
 212   --enable-libsnappy         snappy compression
 213   --enable-libspeex          Speex audio encoding/decoding
 214   --enable-libtheora         Theora video encoding/decoding
 215   --enable-libtwolame        MP2 audio encoding
 216   --enable-libvo-aacenc      AAC audio encoding
 217   --enable-libvo-amrwbenc    AMR-WB audio encoding
 218   --enable-libvorbis         Vorbis audio encoding/decoding
 219   --enable-libvpx            VP* video encoding/decoding
 220   --enable-libwavpack        Wavpack audio encoding/decoding
 221   --enable-libwebp           WebP image encoding/decoding
 222   --enable-libx264           H.264 video encoding
 223   --enable-libx265           HEVC video encoding
 224   --enable-libxavs           Chinese AVS video encoding
 225   --enable-libxcb            X window system protocol communication
 226   --enable-libxcb-shm        X11 shm communication [auto]
 227   --enable-libxcb-xfixes     X11 mouse rendering [auto]
 228   --enable-libxvid           MPEG-4 ASP video encoding
 229   --enable-openssl           crypto
 230   --enable-x11grab           X11 grabbing through xlib (legacy, use xcb instead)
 231   --enable-zlib              compression [autodetect]
 232
 233   The following libraries provide various hardware acceleration features:
 234   --enable-cuda    Nvidia CUDA (dynamically linked)
 235   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
 236   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
 237   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
 238   --enable-libnpp  Nvidia CUDA processing
 239   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
 240   --enable-nvenc   Nvidia video encoding
 241   --enable-omx     OpenMAX IL
 242   --enable-omx-rpi OpenMAX IL for Raspberry Pi
 243   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
 244   --enable-vda     Apple Video Decode Acceleration [auto]
 245   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
 246
 247 Toolchain options:
 248   --arch=ARCH              select architecture [$arch]
 249   --cpu=CPU                select the minimum required CPU (affects
 250                            instruction selection, may crash on older CPUs)
 251   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 252   --enable-cross-compile   assume a cross-compiler is used
 253   --sysroot=PATH           root of cross-build tree
 254   --sysinclude=PATH        location of cross-build system headers
 255   --target-os=OS           compiler targets OS [$target_os]
 256   --target-exec=CMD        command to run executables on target
 257   --target-path=DIR        path to view of build directory on target
 258   --target-samples=DIR     path to samples directory on target
 259   --toolchain=NAME         set tool defaults according to NAME
 260   --nm=NM                  use nm tool
 261   --ar=AR                  use archive tool AR [$ar_default]
 262   --as=AS                  use assembler AS [$as_default]
 263   --cc=CC                  use C compiler CC [$cc_default]
 264   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 265   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 266   --ld=LD                  use linker LD
 267   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 268   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 269   --host-cc=HOSTCC         use host C compiler HOSTCC
 270   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 271   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 272   --host-ld=HOSTLD         use host linker HOSTLD
 273   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 274   --host-libs=HLIBS        use libs HLIBS when linking for host
 275   --host-os=OS             compiler host OS [$target_os]
 276   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 277   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 278   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 279   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 280   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 281   --extra-version=STRING   version string suffix []
 282   --optflags=OPTFLAGS      override optimization-related compiler flags
 283   --build-suffix=SUFFIX    library name suffix []
 284   --enable-pic             build position-independent code
 285   --enable-thumb           compile for Thumb instruction set
 286   --enable-lto             use link-time optimization
 287   --env="ENV=override"     override the environment variables
 288
 289 Advanced options (experts only):
 290   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 291   --custom-allocator=NAME  use a supported custom allocator
 292   --disable-symver         disable symbol versioning
 293   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 294   --disable-safe-bitstream-reader
 295                            disable buffer boundary checking in bitreaders
 296                            (faster, but may crash)
 297   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 298   --enable-sram            allow use of on-chip SRAM
 299
 300 Optimization options (experts only):
 301   --disable-asm            disable all assembly optimizations
 302   --disable-altivec        disable AltiVec optimizations
 303   --disable-vsx            disable VSX optimizations
 304   --disable-power8         disable POWER8 optimizations
 305   --disable-amd3dnow       disable 3DNow! optimizations
 306   --disable-amd3dnowext    disable 3DNow! extended optimizations
 307   --disable-mmx            disable MMX optimizations
 308   --disable-mmxext         disable MMXEXT optimizations
 309   --disable-sse            disable SSE optimizations
 310   --disable-sse2           disable SSE2 optimizations
 311   --disable-sse3           disable SSE3 optimizations
 312   --disable-ssse3          disable SSSE3 optimizations
 313   --disable-sse4           disable SSE4 optimizations
 314   --disable-sse42          disable SSE4.2 optimizations
 315   --disable-avx            disable AVX optimizations
 316   --disable-xop            disable XOP optimizations
 317   --disable-fma3           disable FMA3 optimizations
 318   --disable-fma4           disable FMA4 optimizations
 319   --disable-avx2           disable AVX2 optimizations
 320   --disable-armv5te        disable armv5te optimizations
 321   --disable-armv6          disable armv6 optimizations
 322   --disable-armv6t2        disable armv6t2 optimizations
 323   --disable-vfp            disable VFP optimizations
 324   --disable-neon           disable NEON optimizations
 325   --disable-inline-asm     disable use of inline assembly
 326   --disable-yasm           disable use of nasm/yasm assembly
 327
 328 Developer options (useful when working on Libav itself):
 329   --disable-debug          disable debugging symbols
 330   --enable-debug=LEVEL     set the debug level [$debuglevel]
 331   --disable-optimizations  disable compiler optimizations
 332   --enable-extra-warnings  enable more compiler warnings
 333   --samples=PATH           location of test samples for FATE, if not set use
 334                            \$LIBAV_SAMPLES at make invocation time.
 335   --enable-neon-clobber-test check NEON registers for clobbering (should be
 336                            used only for debugging purposes)
 337   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 338                            should be used only for debugging purposes)
 339   --enable-random          randomly enable/disable components
 340   --disable-random
 341   --enable-random=LIST     randomly enable/disable specific components or
 342   --disable-random=LIST    component groups. LIST is a comma-separated list
 343                            of NAME[:PROB] entries where NAME is a component
 344                            (group) and PROB the probability associated with
 345                            NAME (default 0.5).
 346   --random-seed=VALUE      seed value for --enable/disable-random
 347   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 348                            (only applies to --disable-optimizations builds)
 349
 350 NOTE: Object files are built at the place where configure is launched.
 351 EOF
 352   exit 0
 353 }
 354
 355 quotes='""'
 356
 357 log(){
 358     echo "$@" >> $logfile
 359 }
 360
 361 log_file(){
 362     log BEGIN $1
 363     i=1
 364     while read line; do
 365         printf '%5s   %s\n' "${i}" "${line}"
 366         i=$(($i+1))
 367     done < $1 >> $logfile
 368     log END $1
 369 }
 370
 371 echolog(){
 372     log "$@"
 373     echo "$@"
 374 }
 375
 376 warn(){
 377     log "WARNING: $*"
 378     WARNINGS="${WARNINGS}WARNING: $*\n"
 379 }
 380
 381 die(){
 382     echolog "$@"
 383     cat <<EOF
 384
 385 If you think configure made a mistake, make sure you are using the latest
 386 version from Git.  If the latest version fails, report the problem to the
 387 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 388 EOF
 389     if disabled logging; then
 390         cat <<EOF
 391 Rerun configure with logging enabled (do not use --disable-logging), and
 392 include the log this produces with your report.
 393 EOF
 394     else
 395         cat <<EOF
 396 Include the log file "$logfile" produced by configure as this will help
 397 solving the problem.
 398 EOF
 399     fi
 400     exit 1
 401 }
 402
 403 # Avoid locale weirdness, besides we really just want to translate ASCII.
 404 toupper(){
 405     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 406 }
 407
 408 tolower(){
 409     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 410 }
 411
 412 c_escape(){
 413     echo "$*" | sed 's/["\\]/\\\0/g'
 414 }
 415
 416 sh_quote(){
 417     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 418     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 419     echo "$v"
 420 }
 421
 422 cleanws(){
 423     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 424 }
 425
 426 filter(){
 427     pat=$1
 428     shift
 429     for v; do
 430         eval "case $v in $pat) echo $v ;; esac"
 431     done
 432 }
 433
 434 filter_out(){
 435     pat=$1
 436     shift
 437     for v; do
 438         eval "case $v in $pat) ;; *) echo $v ;; esac"
 439     done
 440 }
 441
 442 map(){
 443     m=$1
 444     shift
 445     for v; do eval $m; done
 446 }
 447
 448 add_suffix(){
 449     suffix=$1
 450     shift
 451     for v; do echo ${v}${suffix}; done
 452 }
 453
 454 set_all(){
 455     value=$1
 456     shift
 457     for var in $*; do
 458         eval $var=$value
 459     done
 460 }
 461
 462 set_weak(){
 463     value=$1
 464     shift
 465     for var; do
 466         eval : \${$var:=$value}
 467     done
 468 }
 469
 470 sanitize_var_name(){
 471     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 472 }
 473
 474 set_safe(){
 475     var=$1
 476     shift
 477     eval $(sanitize_var_name "$var")='$*'
 478 }
 479
 480 get_safe(){
 481     eval echo \$$(sanitize_var_name "$1")
 482 }
 483
 484 pushvar(){
 485     for pvar in $*; do
 486         eval level=\${${pvar}_level:=0}
 487         eval ${pvar}_${level}="\$$pvar"
 488         eval ${pvar}_level=$(($level+1))
 489     done
 490 }
 491
 492 popvar(){
 493     for pvar in $*; do
 494         eval level=\${${pvar}_level:-0}
 495         test $level = 0 && continue
 496         eval level=$(($level-1))
 497         eval $pvar="\${${pvar}_${level}}"
 498         eval ${pvar}_level=$level
 499         eval unset ${pvar}_${level}
 500     done
 501 }
 502
 503 enable(){
 504     set_all yes $*
 505 }
 506
 507 disable(){
 508     set_all no $*
 509 }
 510
 511 enable_weak(){
 512     set_weak yes $*
 513 }
 514
 515 disable_weak(){
 516     set_weak no $*
 517 }
 518
 519 enable_safe(){
 520     for var; do
 521         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 522     done
 523 }
 524
 525 disable_safe(){
 526     for var; do
 527         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 528     done
 529 }
 530
 531 do_enable_deep(){
 532     for var; do
 533         enabled $var && continue
 534         eval sel="\$${var}_select"
 535         eval sgs="\$${var}_suggest"
 536         pushvar var sgs
 537         enable_deep $sel
 538         popvar sgs
 539         enable_deep_weak $sgs
 540         popvar var
 541     done
 542 }
 543
 544 enable_deep(){
 545     do_enable_deep $*
 546     enable $*
 547 }
 548
 549 enable_deep_weak(){
 550     for var; do
 551         disabled $var && continue
 552         pushvar var
 553         do_enable_deep $var
 554         popvar var
 555         enable_weak $var
 556     done
 557 }
 558
 559 enabled(){
 560     test "${1#!}" = "$1" && op== || op=!=
 561     eval test "x\$${1#!}" $op "xyes"
 562 }
 563
 564 disabled(){
 565     test "${1#!}" = "$1" && op== || op=!=
 566     eval test "x\$${1#!}" $op "xno"
 567 }
 568
 569 enabled_all(){
 570     for opt; do
 571         enabled $opt || return 1
 572     done
 573 }
 574
 575 disabled_all(){
 576     for opt; do
 577         disabled $opt || return 1
 578     done
 579 }
 580
 581 enabled_any(){
 582     for opt; do
 583         enabled $opt && return 0
 584     done
 585 }
 586
 587 disabled_any(){
 588     for opt; do
 589         disabled $opt && return 0
 590     done
 591     return 1
 592 }
 593
 594 set_default(){
 595     for opt; do
 596         eval : \${$opt:=\$${opt}_default}
 597     done
 598 }
 599
 600 is_in(){
 601     value=$1
 602     shift
 603     for var in $*; do
 604         [ $var = $value ] && return 0
 605     done
 606     return 1
 607 }
 608
 609 do_check_deps(){
 610     for cfg; do
 611         cfg="${cfg#!}"
 612         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 613         disabled ${cfg}_checking && continue
 614         enable ${cfg}_checking
 615         append allopts $cfg
 616
 617         eval dep_all="\$${cfg}_deps"
 618         eval dep_any="\$${cfg}_deps_any"
 619         eval dep_sel="\$${cfg}_select"
 620         eval dep_sgs="\$${cfg}_suggest"
 621         eval dep_ifa="\$${cfg}_if"
 622         eval dep_ifn="\$${cfg}_if_any"
 623
 624         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 625         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 626         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 627
 628         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 629         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 630         enabled_all  $dep_all || disable $cfg
 631         enabled_any  $dep_any || disable $cfg
 632         disabled_any $dep_sel && disable $cfg
 633
 634         if enabled $cfg; then
 635             enable_deep $dep_sel
 636             enable_deep_weak $dep_sgs
 637         fi
 638
 639         disable ${cfg}_checking
 640     done
 641 }
 642
 643 check_deps(){
 644     unset allopts
 645
 646     do_check_deps "$@"
 647
 648     for cfg in $allopts; do
 649         enabled $cfg || continue
 650         eval dep_extralibs="\$${cfg}_extralibs"
 651         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 652     done
 653 }
 654
 655 print_config(){
 656     pfx=$1
 657     files=$2
 658     shift 2
 659     map 'eval echo "$v \${$v:-no}"' "$@" |
 660     awk "BEGIN { split(\"$files\", files) }
 661         {
 662             c = \"$pfx\" toupper(\$1);
 663             v = \$2;
 664             sub(/yes/, 1, v);
 665             sub(/no/,  0, v);
 666             for (f in files) {
 667                 file = files[f];
 668                 if (file ~ /\\.h\$/) {
 669                     printf(\"#define %s %d\\n\", c, v) >>file;
 670                 } else if (file ~ /\\.asm\$/) {
 671                     printf(\"%%define %s %d\\n\", c, v) >>file;
 672                 } else if (file ~ /\\.mak\$/) {
 673                     n = -v ? \"\" : \"!\";
 674                     printf(\"%s%s=yes\\n\", n, c) >>file;
 675                 }
 676             }
 677         }"
 678 }
 679
 680 print_enabled(){
 681     suf=$1
 682     shift
 683     for v; do
 684         enabled $v && printf "%s\n" ${v%$suf}
 685     done
 686 }
 687
 688 append(){
 689     var=$1
 690     shift
 691     eval "$var=\"\$$var $*\""
 692 }
 693
 694 prepend(){
 695     var=$1
 696     shift
 697     eval "$var=\"$* \$$var\""
 698 }
 699
 700 unique(){
 701     var=$1
 702     uniq_list=""
 703     for tok in $(eval echo \$$var); do
 704         uniq_list="$(filter_out $tok $uniq_list) $tok"
 705     done
 706     eval "$var=\"${uniq_list}\""
 707 }
 708
 709 add_cppflags(){
 710     append CPPFLAGS "$@"
 711 }
 712
 713 add_cflags(){
 714     append CFLAGS $($cflags_filter "$@")
 715 }
 716
 717 add_asflags(){
 718     append ASFLAGS $($asflags_filter "$@")
 719 }
 720
 721 add_objcflags(){
 722     append OBJCFLAGS $($objcflags_filter "$@")
 723 }
 724
 725 add_ldflags(){
 726     append LDFLAGS $($ldflags_filter "$@")
 727 }
 728
 729 add_ldexeflags(){
 730     append LDEXEFLAGS $($ldflags_filter "$@")
 731 }
 732
 733 add_stripflags(){
 734     append STRIPFLAGS "$@"
 735 }
 736
 737 add_extralibs(){
 738     prepend extralibs $($ldflags_filter "$@")
 739 }
 740
 741 add_host_cppflags(){
 742     append host_cppflags "$@"
 743 }
 744
 745 add_host_cflags(){
 746     append host_cflags $($host_cflags_filter "$@")
 747 }
 748
 749 add_host_ldflags(){
 750     append host_ldflags $($host_ldflags_filter "$@")
 751 }
 752
 753 add_compat(){
 754     append compat_objs $1
 755     shift
 756     map 'add_cppflags -D$v' "$@"
 757 }
 758
 759 check_cmd(){
 760     log "$@"
 761     "$@" >> $logfile 2>&1
 762 }
 763
 764 cc_o(){
 765     eval printf '%s\\n' $CC_O
 766 }
 767
 768 cc_e(){
 769     eval printf '%s\\n' $CC_E
 770 }
 771
 772 check_cc(){
 773     log check_cc "$@"
 774     cat > $TMPC
 775     log_file $TMPC
 776     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 777 }
 778
 779 check_objcc(){
 780     log check_objcc "$@"
 781     cat > $TMPC
 782     log_file $TMPC
 783     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
 784 }
 785
 786 check_cpp(){
 787     log check_cpp "$@"
 788     cat > $TMPC
 789     log_file $TMPC
 790     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 791 }
 792
 793 as_o(){
 794     eval printf '%s\\n' $AS_O
 795 }
 796
 797 check_as(){
 798     log check_as "$@"
 799     cat > $TMPS
 800     log_file $TMPS
 801     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 802 }
 803
 804 check_inline_asm(){
 805     log check_inline_asm "$@"
 806     name="$1"
 807     code="$2"
 808     shift 2
 809     disable $name
 810     check_cc "$@" <<EOF && enable $name
 811 void foo(void){ __asm__ volatile($code); }
 812 EOF
 813 }
 814
 815 check_insn(){
 816     log check_insn "$@"
 817     check_inline_asm ${1}_inline "\"$2\""
 818     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 819 }
 820
 821 check_yasm(){
 822     log check_yasm "$@"
 823     echo "$1" > $TMPS
 824     log_file $TMPS
 825     shift 1
 826     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 827 }
 828
 829 ld_o(){
 830     eval printf '%s\\n' $LD_O
 831 }
 832
 833 check_ld(){
 834     log check_ld "$@"
 835     flags=$(filter_out '-l*' "$@")
 836     libs=$(filter '-l*' "$@")
 837     check_cc $($cflags_filter $flags) || return
 838     flags=$($ldflags_filter $flags)
 839     libs=$($ldflags_filter $libs)
 840     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 841 }
 842
 843 print_include(){
 844     hdr=$1
 845     test "${hdr%.h}" = "${hdr}" &&
 846         echo "#include $hdr"    ||
 847         echo "#include <$hdr>"
 848 }
 849
 850 check_code(){
 851     log check_code "$@"
 852     check=$1
 853     headers=$2
 854     code=$3
 855     shift 3
 856     {
 857         for hdr in $headers; do
 858             print_include $hdr
 859         done
 860         echo "int main(void) { $code; return 0; }"
 861     } | check_$check "$@"
 862 }
 863
 864 check_cppflags(){
 865     log check_cppflags "$@"
 866     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 867 int x;
 868 EOF
 869 }
 870
 871 test_cflags(){
 872     log test_cflags "$@"
 873     set -- $($cflags_filter "$@")
 874     check_cc "$@" <<EOF
 875 int x;
 876 EOF
 877 }
 878
 879 check_cflags(){
 880     log check_cflags "$@"
 881     test_cflags "$@" && add_cflags "$@"
 882 }
 883
 884 test_objcflags(){
 885     log test_cflags "$@"
 886     set -- $($cflags_filter "$@")
 887     check_objcc "$@" <<EOF
 888 int x;
 889 EOF
 890 }
 891
 892 check_objcflags(){
 893     log check_cflags "$@"
 894     test_objcflags "$@" && add_objcflags "$@"
 895 }
 896
 897 test_ldflags(){
 898     log test_ldflags "$@"
 899     check_ld "$@" <<EOF
 900 int main(void){ return 0; }
 901 EOF
 902 }
 903
 904 check_ldflags(){
 905     log check_ldflags "$@"
 906     test_ldflags "$@" && add_ldflags "$@"
 907 }
 908
 909 test_stripflags(){
 910     log test_stripflags "$@"
 911     # call check_cc to get a fresh TMPO
 912     check_cc <<EOF
 913 int main(void) { return 0; }
 914 EOF
 915     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 916 }
 917
 918 check_stripflags(){
 919     log check_stripflags "$@"
 920     test_stripflags "$@" && add_stripflags "$@"
 921 }
 922
 923 check_header(){
 924     log check_header "$@"
 925     header=$1
 926     shift
 927     disable_safe $header
 928     check_cpp "$@" <<EOF && enable_safe $header
 929 #include <$header>
 930 int x;
 931 EOF
 932 }
 933
 934 check_func(){
 935     log check_func "$@"
 936     func=$1
 937     shift
 938     disable $func
 939     check_ld "$@" <<EOF && enable $func
 940 extern int $func();
 941 int main(void){ $func(); }
 942 EOF
 943 }
 944
 945 check_mathfunc(){
 946     log check_mathfunc "$@"
 947     func=$1
 948     narg=$2
 949     shift 2
 950     test $narg = 2 && args="f, g" || args="f"
 951     disable $func
 952     check_ld "$@" <<EOF && enable $func
 953 #include <math.h>
 954 float foo(float f, float g) { return $func($args); }
 955 int main(void){ return 0; }
 956 EOF
 957 }
 958
 959 check_func_headers(){
 960     log check_func_headers "$@"
 961     headers=$1
 962     funcs=$2
 963     shift 2
 964     {
 965         for hdr in $headers; do
 966             print_include $hdr
 967         done
 968         for func in $funcs; do
 969             echo "long check_$func(void) { return (long) $func; }"
 970         done
 971         echo "int main(void) { return 0; }"
 972     } | check_ld "$@" && enable $funcs && enable_safe $headers
 973 }
 974
 975 check_cpp_condition(){
 976     log check_cpp_condition "$@"
 977     header=$1
 978     condition=$2
 979     shift 2
 980     check_cpp "$@" <<EOF
 981 #include <$header>
 982 #if !($condition)
 983 #error "unsatisfied condition: $condition"
 984 #endif
 985 EOF
 986 }
 987
 988 check_lib(){
 989     log check_lib "$@"
 990     header="$1"
 991     func="$2"
 992     shift 2
 993     check_header $header && check_func $func "$@" && add_extralibs "$@"
 994 }
 995
 996 check_lib2(){
 997     log check_lib2 "$@"
 998     headers="$1"
 999     funcs="$2"
1000     shift 2
1001     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1002 }
1003
1004 check_pkg_config(){
1005     log check_pkg_config "$@"
1006     pkg="$1"
1007     headers="$2"
1008     funcs="$3"
1009     shift 3
1010     check_cmd $pkg_config --exists --print-errors $pkg || return
1011     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1012     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1013     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1014         set_safe "${pkg}_cflags" $pkg_cflags   &&
1015         set_safe "${pkg}_libs"   $pkg_libs
1016 }
1017
1018 check_exec(){
1019     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1020 }
1021
1022 check_exec_crash(){
1023     code=$(cat)
1024
1025     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1026     # are safe but may not be available everywhere.  Thus we use
1027     # raise(SIGTERM) instead.  The check is run in a subshell so we
1028     # can redirect the "Terminated" message from the shell.  SIGBUS
1029     # is not defined by standard C so it is used conditionally.
1030
1031     (check_exec "$@") >> $logfile 2>&1 <<EOF
1032 #include <signal.h>
1033 static void sighandler(int sig){
1034     raise(SIGTERM);
1035 }
1036 int foo(void){
1037     $code
1038 }
1039 int (*func_ptr)(void) = foo;
1040 int main(void){
1041     signal(SIGILL, sighandler);
1042     signal(SIGFPE, sighandler);
1043     signal(SIGSEGV, sighandler);
1044 #ifdef SIGBUS
1045     signal(SIGBUS, sighandler);
1046 #endif
1047     return func_ptr();
1048 }
1049 EOF
1050 }
1051
1052 check_type(){
1053     log check_type "$@"
1054     headers=$1
1055     type=$2
1056     shift 2
1057     disable_safe "$type"
1058     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1059 }
1060
1061 check_struct(){
1062     log check_struct "$@"
1063     headers=$1
1064     struct=$2
1065     member=$3
1066     shift 3
1067     disable_safe "${struct}_${member}"
1068     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1069         enable_safe "${struct}_${member}"
1070 }
1071
1072 check_builtin(){
1073     log check_builtin "$@"
1074     name=$1
1075     headers=$2
1076     builtin=$3
1077     shift 3
1078     disable "$name"
1079     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1080 }
1081
1082 check_compile_assert(){
1083     log check_compile_assert "$@"
1084     name=$1
1085     headers=$2
1086     condition=$3
1087     shift 3
1088     disable "$name"
1089     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1090 }
1091
1092 require(){
1093     name="$1"
1094     header="$2"
1095     func="$3"
1096     shift 3
1097     check_lib $header $func "$@" || die "ERROR: $name not found"
1098 }
1099
1100 require2(){
1101     name="$1"
1102     headers="$2"
1103     func="$3"
1104     shift 3
1105     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1106 }
1107
1108 require_pkg_config(){
1109     pkg="$1"
1110     check_pkg_config "$@" || die "ERROR: $pkg not found"
1111     add_cflags    $(get_safe "${pkg}_cflags")
1112     add_extralibs $(get_safe "${pkg}_libs")
1113 }
1114
1115 hostcc_e(){
1116     eval printf '%s\\n' $HOSTCC_E
1117 }
1118
1119 hostcc_o(){
1120     eval printf '%s\\n' $HOSTCC_O
1121 }
1122
1123 check_host_cc(){
1124     log check_host_cc "$@"
1125     cat > $TMPC
1126     log_file $TMPC
1127     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1128 }
1129
1130 check_host_cpp(){
1131     log check_host_cpp "$@"
1132     cat > $TMPC
1133     log_file $TMPC
1134     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1135 }
1136
1137 check_host_cppflags(){
1138     log check_host_cppflags "$@"
1139     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1140 int x;
1141 EOF
1142 }
1143
1144 check_host_cflags(){
1145     log check_host_cflags "$@"
1146     set -- $($host_cflags_filter "$@")
1147     check_host_cc "$@" <<EOF && append host_cflags "$@"
1148 int x;
1149 EOF
1150 }
1151
1152 check_host_cpp_condition(){
1153     log check_host_cpp_condition "$@"
1154     header=$1
1155     condition=$2
1156     shift 2
1157     check_host_cpp "$@" <<EOF
1158 #include <$header>
1159 #if !($condition)
1160 #error "unsatisfied condition: $condition"
1161 #endif
1162 EOF
1163 }
1164
1165 apply(){
1166     file=$1
1167     shift
1168     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1169 }
1170
1171 cp_if_changed(){
1172     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1173     mkdir -p "$(dirname $2)"
1174     $cp_f "$1" "$2"
1175 }
1176
1177 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1178 # system-dependent things.
1179
1180 AVCODEC_COMPONENTS="
1181     bsfs
1182     decoders
1183     encoders
1184     hwaccels
1185     parsers
1186 "
1187
1188 AVDEVICE_COMPONENTS="
1189     indevs
1190     outdevs
1191 "
1192 AVFILTER_COMPONENTS="
1193     filters
1194 "
1195 AVFORMAT_COMPONENTS="
1196     demuxers
1197     muxers
1198     protocols
1199 "
1200
1201 AVRESAMPLE_COMPONENTS=""
1202 AVUTIL_COMPONENTS=""
1203
1204 COMPONENT_LIST="
1205     $AVCODEC_COMPONENTS
1206     $AVDEVICE_COMPONENTS
1207     $AVFILTER_COMPONENTS
1208     $AVFORMAT_COMPONENTS
1209     $AVRESAMPLE_COMPONENTS
1210     $AVUTIL_COMPONENTS
1211 "
1212
1213 EXAMPLE_LIST="
1214     avcodec_example
1215     filter_audio_example
1216     metadata_example
1217     output_example
1218     qsvdec_example
1219     transcode_aac_example
1220 "
1221
1222 HWACCEL_LIBRARY_LIST="
1223     cuda
1224     d3d11va
1225     dxva2
1226     libmfx
1227     libnpp
1228     mmal
1229     nvenc
1230     omx
1231     vaapi
1232     vda
1233     vdpau
1234 "
1235
1236 EXTERNAL_LIBRARY_LIST="
1237     avisynth
1238     bzlib
1239     frei0r
1240     gnutls
1241     libbs2b
1242     libcdio
1243     libdc1394
1244     libdcadec
1245     libfaac
1246     libfdk_aac
1247     libfontconfig
1248     libfreetype
1249     libgsm
1250     libilbc
1251     libkvazaar
1252     libmp3lame
1253     libopencore_amrnb
1254     libopencore_amrwb
1255     libopencv
1256     libopenh264
1257     libopenjpeg
1258     libopus
1259     libpulse
1260     librtmp
1261     libschroedinger
1262     libsnappy
1263     libspeex
1264     libtheora
1265     libtwolame
1266     libvo_aacenc
1267     libvo_amrwbenc
1268     libvorbis
1269     libvpx
1270     libwavpack
1271     libwebp
1272     libx264
1273     libx265
1274     libxavs
1275     libxcb
1276     libxcb_shm
1277     libxcb_xfixes
1278     libxvid
1279     openssl
1280     x11grab
1281     zlib
1282 "
1283
1284 FEATURE_LIST="
1285     gray
1286     hardcoded_tables
1287     omx_rpi
1288     runtime_cpudetect
1289     safe_bitstream_reader
1290     shared
1291     small
1292     sram
1293     static
1294     swscale_alpha
1295 "
1296
1297 LIBRARY_LIST="
1298     avcodec
1299     avdevice
1300     avfilter
1301     avformat
1302     avresample
1303     avutil
1304     swscale
1305 "
1306
1307 LICENSE_LIST="
1308     gpl
1309     nonfree
1310     version3
1311 "
1312
1313 PROGRAM_LIST="
1314     avconv
1315     avplay
1316     avprobe
1317 "
1318
1319 SUBSYSTEM_LIST="
1320     dct
1321     doc
1322     error_resilience
1323     faan
1324     fft
1325     lsp
1326     lzo
1327     mdct
1328     network
1329     rdft
1330 "
1331
1332 CONFIG_LIST="
1333     $COMPONENT_LIST
1334     $EXAMPLE_LIST
1335     $EXTERNAL_LIBRARY_LIST
1336     $HWACCEL_LIBRARY_LIST
1337     $FEATURE_LIST
1338     $LICENSE_LIST
1339     $LIBRARY_LIST
1340     $PROGRAM_LIST
1341     $SUBSYSTEM_LIST
1342     memalign_hack
1343     neon_clobber_test
1344     pic
1345     pod2man
1346     texi2html
1347     thumb
1348     valgrind_backtrace
1349     xmm_clobber_test
1350 "
1351
1352 THREADS_LIST="
1353     pthreads
1354     w32threads
1355 "
1356
1357 ATOMICS_LIST="
1358     atomics_gcc
1359     atomics_suncc
1360     atomics_win32
1361 "
1362
1363 ARCH_LIST="
1364     aarch64
1365     alpha
1366     arm
1367     avr32
1368     avr32_ap
1369     avr32_uc
1370     bfin
1371     ia64
1372     m68k
1373     mips
1374     mips64
1375     parisc
1376     ppc
1377     ppc64
1378     s390
1379     sh4
1380     sparc
1381     sparc64
1382     tilegx
1383     tilepro
1384     tomi
1385     x86
1386     x86_32
1387     x86_64
1388 "
1389
1390 ARCH_EXT_LIST_ARM="
1391     armv5te
1392     armv6
1393     armv6t2
1394     armv8
1395     neon
1396     vfp
1397     vfpv3
1398 "
1399
1400 ARCH_EXT_LIST_X86_SIMD="
1401     amd3dnow
1402     amd3dnowext
1403     avx
1404     avx2
1405     fma3
1406     fma4
1407     mmx
1408     mmxext
1409     sse
1410     sse2
1411     sse3
1412     sse4
1413     sse42
1414     ssse3
1415     xop
1416 "
1417
1418 ARCH_EXT_LIST_PPC="
1419     altivec
1420     dcbzl
1421     ldbrx
1422     power8
1423     ppc4xx
1424     vsx
1425 "
1426
1427 ARCH_EXT_LIST_X86="
1428     $ARCH_EXT_LIST_X86_SIMD
1429     cpunop
1430     i686
1431 "
1432
1433 ARCH_EXT_LIST_MIPS="
1434     loongson
1435     mips32r1
1436     mips64r1
1437     mips32r2
1438     mips64r2
1439     mips32r6
1440     mips64r6
1441 "
1442
1443 ARCH_EXT_LIST="
1444     $ARCH_EXT_LIST_ARM
1445     $ARCH_EXT_LIST_MIPS
1446     $ARCH_EXT_LIST_PPC
1447     $ARCH_EXT_LIST_X86
1448     vis
1449 "
1450
1451 ARCH_FEATURES="
1452     aligned_stack
1453     fast_64bit
1454     fast_clz
1455     fast_cmov
1456     local_aligned_8
1457     local_aligned_16
1458     simd_align_16
1459 "
1460
1461 BUILTIN_LIST="
1462     atomic_cas_ptr
1463     machine_rw_barrier
1464     MemoryBarrier
1465     mm_empty
1466     rdtsc
1467     sem_timedwait
1468     sync_val_compare_and_swap
1469 "
1470 HAVE_LIST_CMDLINE="
1471     inline_asm
1472     symver
1473     yasm
1474 "
1475
1476 HAVE_LIST_PUB="
1477     bigendian
1478     fast_unaligned
1479 "
1480
1481 HEADERS_LIST="
1482     AVFoundation_AVFoundation_h
1483     alsa_asoundlib_h
1484     altivec_h
1485     arpa_inet_h
1486     cdio_paranoia_h
1487     cdio_paranoia_paranoia_h
1488     dispatch_dispatch_h
1489     dev_bktr_ioctl_bt848_h
1490     dev_bktr_ioctl_meteor_h
1491     dev_ic_bt8xx_h
1492     dev_video_bktr_ioctl_bt848_h
1493     dev_video_meteor_ioctl_meteor_h
1494     direct_h
1495     dlfcn_h
1496     d3d11_h
1497     dxva_h
1498     gsm_h
1499     io_h
1500     mach_mach_time_h
1501     machine_ioctl_bt848_h
1502     machine_ioctl_meteor_h
1503     malloc_h
1504     poll_h
1505     sndio_h
1506     soundcard_h
1507     sys_mman_h
1508     sys_param_h
1509     sys_resource_h
1510     sys_select_h
1511     sys_soundcard_h
1512     sys_time_h
1513     sys_un_h
1514     sys_videoio_h
1515     unistd_h
1516     valgrind_valgrind_h
1517     windows_h
1518     winsock2_h
1519 "
1520
1521 INTRINSICS_LIST="
1522     intrinsics_neon
1523 "
1524
1525 MATH_FUNCS="
1526     atanf
1527     atan2f
1528     cbrtf
1529     cosf
1530     exp2
1531     exp2f
1532     expf
1533     isinf
1534     isnan
1535     ldexpf
1536     llrint
1537     llrintf
1538     log2
1539     log2f
1540     log10f
1541     lrint
1542     lrintf
1543     powf
1544     rint
1545     round
1546     roundf
1547     sinf
1548     trunc
1549     truncf
1550 "
1551
1552 SYSTEM_FUNCS="
1553     aligned_malloc
1554     clock_gettime
1555     closesocket
1556     CommandLineToArgvW
1557     CoTaskMemFree
1558     CryptGenRandom
1559     dlopen
1560     fcntl
1561     flt_lim
1562     fork
1563     getaddrinfo
1564     gethrtime
1565     getopt
1566     GetProcessAffinityMask
1567     GetProcessMemoryInfo
1568     GetProcessTimes
1569     getrusage
1570     GetSystemTimeAsFileTime
1571     gettimeofday
1572     gmtime_r
1573     inet_aton
1574     isatty
1575     jack_port_get_latency_range
1576     LoadLibrary
1577     localtime_r
1578     mach_absolute_time
1579     MapViewOfFile
1580     memalign
1581     mkstemp
1582     mmap
1583     mprotect
1584     nanosleep
1585     posix_memalign
1586     sched_getaffinity
1587     SetConsoleTextAttribute
1588     setmode
1589     setrlimit
1590     Sleep
1591     strerror_r
1592     sysconf
1593     sysctl
1594     usleep
1595     VirtualAlloc
1596 "
1597
1598 TOOLCHAIN_FEATURES="
1599     as_dn_directive
1600     as_func
1601     as_object_arch
1602     asm_mod_q
1603     attribute_may_alias
1604     attribute_packed
1605     ebp_available
1606     ebx_available
1607     gnu_as
1608     ibm_asm
1609     inline_asm_labels
1610     pragma_deprecated
1611     symver_asm_label
1612     symver_gnu_asm
1613     vfp_args
1614     xform_asm
1615     xmm_clobbers
1616 "
1617
1618 TYPES_LIST="
1619     CONDITION_VARIABLE_Ptr
1620     socklen_t
1621     struct_addrinfo
1622     struct_group_source_req
1623     struct_ip_mreq_source
1624     struct_ipv6_mreq
1625     struct_pollfd
1626     struct_rusage_ru_maxrss
1627     struct_sockaddr_in6
1628     struct_sockaddr_sa_len
1629     struct_sockaddr_storage
1630     struct_v4l2_frmivalenum_discrete
1631 "
1632
1633 HAVE_LIST="
1634     $ARCH_EXT_LIST
1635     $(add_suffix _external $ARCH_EXT_LIST)
1636     $(add_suffix _inline   $ARCH_EXT_LIST)
1637     $ARCH_FEATURES
1638     $ATOMICS_LIST
1639     $BUILTIN_LIST
1640     $HAVE_LIST_CMDLINE
1641     $HAVE_LIST_PUB
1642     $HEADERS_LIST
1643     $INTRINSICS_LIST
1644     $MATH_FUNCS
1645     $SYSTEM_FUNCS
1646     $THREADS_LIST
1647     $TOOLCHAIN_FEATURES
1648     $TYPES_LIST
1649     atomics_native
1650     dos_paths
1651     dxva2_lib
1652     libc_msvcrt
1653     libdc1394_1
1654     libdc1394_2
1655     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1656     sdl
1657     section_data_rel_ro
1658     threads
1659     vaapi_drm
1660     vaapi_x11
1661     vdpau_x11
1662     xlib
1663 "
1664
1665 # options emitted with CONFIG_ prefix but not available on the command line
1666 CONFIG_EXTRA="
1667     aandcttables
1668     ac3dsp
1669     audio_frame_queue
1670     audiodsp
1671     blockdsp
1672     bswapdsp
1673     cabac
1674     dirac_parse
1675     dvprofile
1676     faandct
1677     faanidct
1678     fdctdsp
1679     flacdsp
1680     fmtconvert
1681     g722dsp
1682     gcrypt
1683     gmp
1684     golomb
1685     gplv3
1686     h263dsp
1687     h264chroma
1688     h264dsp
1689     h264pred
1690     h264qpel
1691     hpeldsp
1692     huffman
1693     huffyuvdsp
1694     huffyuvencdsp
1695     idctdsp
1696     iirfilter
1697     imdct15
1698     intrax8
1699     iso_media
1700     ividsp
1701     jpegtables
1702     libx262
1703     lgplv3
1704     lpc
1705     lzf
1706     me_cmp
1707     mpeg_er
1708     mpegaudio
1709     mpegaudiodsp
1710     mpegvideo
1711     mpegvideoenc
1712     mss34dsp
1713     pixblockdsp
1714     qpeldsp
1715     qsv
1716     qsvdec
1717     qsvenc
1718     rangecoder
1719     riffdec
1720     riffenc
1721     rtpdec
1722     rtpenc_chain
1723     rv34dsp
1724     sinewin
1725     snappy
1726     srtp
1727     startcode
1728     texturedsp
1729     texturedspenc
1730     tpeldsp
1731     vaapi_encode
1732     vc1dsp
1733     videodsp
1734     vp3dsp
1735     vp56dsp
1736     vp8dsp
1737     wma_freqs
1738     wmv2dsp
1739 "
1740
1741 CMDLINE_SELECT="
1742     $ARCH_EXT_LIST
1743     $CONFIG_LIST
1744     $HAVE_LIST_CMDLINE
1745     $THREADS_LIST
1746     asm
1747     cross_compile
1748     debug
1749     extra_warnings
1750     logging
1751     lto
1752     optimizations
1753     rpath
1754 "
1755
1756 PATHS_LIST="
1757     bindir
1758     datadir
1759     docdir
1760     incdir
1761     libdir
1762     mandir
1763     prefix
1764     shlibdir
1765 "
1766
1767 CMDLINE_SET="
1768     $PATHS_LIST
1769     ar
1770     arch
1771     as
1772     build_suffix
1773     cc
1774     objcc
1775     cpu
1776     cross_prefix
1777     custom_allocator
1778     dep_cc
1779     env
1780     extra_version
1781     host_cc
1782     host_cflags
1783     host_ld
1784     host_ldflags
1785     host_libs
1786     host_os
1787     ld
1788     logfile
1789     malloc_prefix
1790     nm
1791     optflags
1792     pkg_config
1793     pkg_config_flags
1794     random_seed
1795     samples
1796     sysinclude
1797     sysroot
1798     target_exec
1799     target_os
1800     target_path
1801     target_samples
1802     toolchain
1803 "
1804
1805 CMDLINE_APPEND="
1806     extra_cflags
1807     extra_objcflags
1808     host_cppflags
1809 "
1810
1811 # code dependency declarations
1812
1813 # architecture extensions
1814
1815 armv5te_deps="arm"
1816 armv6_deps="arm"
1817 armv6t2_deps="arm"
1818 armv8_deps="aarch64"
1819 neon_deps_any="aarch64 arm"
1820 intrinsics_neon_deps="neon"
1821 vfp_deps_any="aarch64 arm"
1822 vfpv3_deps="vfp"
1823
1824 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1825
1826 altivec_deps="ppc"
1827 ppc4xx_deps="ppc"
1828 vsx_deps="altivec"
1829 power8_deps="vsx"
1830
1831 cpunop_deps="i686"
1832 x86_64_select="i686"
1833 x86_64_suggest="fast_cmov"
1834
1835 amd3dnow_deps="mmx"
1836 amd3dnowext_deps="amd3dnow"
1837 i686_deps="x86"
1838 mmx_deps="x86"
1839 mmxext_deps="mmx"
1840 sse_deps="mmxext"
1841 sse2_deps="sse"
1842 sse3_deps="sse2"
1843 ssse3_deps="sse3"
1844 sse4_deps="ssse3"
1845 sse42_deps="sse4"
1846 avx_deps="sse42"
1847 xop_deps="avx"
1848 fma3_deps="avx"
1849 fma4_deps="avx"
1850 avx2_deps="avx"
1851
1852 mmx_external_deps="yasm"
1853 mmx_inline_deps="inline_asm"
1854 mmx_suggest="mmx_external mmx_inline"
1855
1856 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1857     eval dep=\$${ext}_deps
1858     eval ${ext}_external_deps='"${dep}_external"'
1859     eval ${ext}_inline_deps='"${dep}_inline"'
1860     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1861 done
1862
1863 aligned_stack_if_any="aarch64 ppc x86"
1864 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1865 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1866 fast_unaligned_if_any="aarch64 ppc x86"
1867 simd_align_16_if_any="altivec neon sse"
1868
1869 # system capabilities
1870 symver_if_any="symver_asm_label symver_gnu_asm"
1871 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1872
1873 # threading support
1874 atomics_gcc_if="sync_val_compare_and_swap"
1875 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1876 atomics_win32_if="MemoryBarrier"
1877 atomics_native_if_any="$ATOMICS_LIST"
1878 w32threads_deps="atomics_native"
1879 threads_if_any="$THREADS_LIST"
1880
1881 # subsystems
1882 dct_select="rdft"
1883 dirac_parse_select="golomb"
1884 error_resilience_select="me_cmp"
1885 faandct_deps="faan fdctdsp"
1886 faanidct_deps="faan idctdsp"
1887 h264dsp_select="startcode"
1888 intrax8_select="blockdsp idctdsp"
1889 mdct_select="fft"
1890 rdft_select="fft"
1891 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1892 mpeg_er_select="error_resilience"
1893 mpegaudio_select="mpegaudiodsp"
1894 mpegaudiodsp_select="dct"
1895 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1896 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1897 vc1dsp_select="h264chroma qpeldsp startcode"
1898
1899 # decoders / encoders
1900 aac_decoder_select="imdct15 mdct sinewin"
1901 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1902 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1903 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1904 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1905 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1906 adpcm_g722_decoder_select="g722dsp"
1907 adpcm_g722_encoder_select="g722dsp"
1908 aic_decoder_select="golomb idctdsp"
1909 alac_encoder_select="lpc"
1910 als_decoder_select="bswapdsp"
1911 amrnb_decoder_select="lsp"
1912 amrwb_decoder_select="lsp"
1913 amv_decoder_select="sp5x_decoder"
1914 ape_decoder_select="bswapdsp"
1915 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1916 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1917 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1918 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1919 atrac1_decoder_select="mdct sinewin"
1920 atrac3_decoder_select="mdct"
1921 atrac3p_decoder_select="mdct sinewin"
1922 bink_decoder_select="blockdsp hpeldsp"
1923 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1924 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1925 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1926 cllc_decoder_select="bswapdsp"
1927 comfortnoise_encoder_select="lpc"
1928 cook_decoder_select="audiodsp mdct sinewin"
1929 cscd_decoder_select="lzo"
1930 cscd_decoder_suggest="zlib"
1931 dca_decoder_select="fmtconvert mdct"
1932 dds_decoder_select="texturedsp"
1933 dnxhd_decoder_select="blockdsp idctdsp"
1934 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1935 dvvideo_decoder_select="dvprofile idctdsp"
1936 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1937 dxa_decoder_deps="zlib"
1938 dxv_decoder_select="lzf texturedsp"
1939 eac3_decoder_select="ac3_decoder"
1940 eac3_encoder_select="ac3_encoder"
1941 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1942 eatgq_decoder_select="aandcttables idctdsp"
1943 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1944 exr_decoder_deps="zlib"
1945 ffv1_decoder_select="golomb rangecoder"
1946 ffv1_encoder_select="rangecoder"
1947 ffvhuff_decoder_select="huffyuv_decoder"
1948 ffvhuff_encoder_select="huffyuv_encoder"
1949 fic_decoder_select="golomb"
1950 flac_decoder_select="flacdsp golomb"
1951 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1952 flashsv_decoder_deps="zlib"
1953 flashsv_encoder_deps="zlib"
1954 flashsv2_decoder_deps="zlib"
1955 flv_decoder_select="h263_decoder"
1956 flv_encoder_select="h263_encoder"
1957 fourxm_decoder_select="blockdsp bswapdsp"
1958 fraps_decoder_select="bswapdsp huffman"
1959 g2m_decoder_deps="zlib"
1960 g2m_decoder_select="blockdsp idctdsp jpegtables"
1961 h261_decoder_select="mpeg_er mpegvideo"
1962 h261_encoder_select="aandcttables mpegvideoenc"
1963 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1964 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1965 h263i_decoder_select="h263_decoder"
1966 h263p_encoder_select="h263_encoder"
1967 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1968 h264_decoder_suggest="error_resilience"
1969 hap_decoder_select="snappy texturedsp"
1970 hap_encoder_deps="libsnappy"
1971 hap_encoder_select="texturedspenc"
1972 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1973 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1974 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1975 iac_decoder_select="imc_decoder"
1976 imc_decoder_select="bswapdsp fft mdct sinewin"
1977 indeo3_decoder_select="hpeldsp"
1978 indeo4_decoder_select="ividsp"
1979 indeo5_decoder_select="ividsp"
1980 interplay_video_decoder_select="hpeldsp"
1981 jpegls_decoder_select="golomb mjpeg_decoder"
1982 jpegls_encoder_select="golomb"
1983 jv_decoder_select="blockdsp"
1984 lagarith_decoder_select="huffyuvdsp"
1985 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1986 loco_decoder_select="golomb"
1987 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1988 metasound_decoder_select="lsp mdct sinewin"
1989 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1990 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1991 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1992 mjpegb_decoder_select="mjpeg_decoder"
1993 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
1994 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
1995 mlp_decoder_select="mlp_parser"
1996 motionpixels_decoder_select="bswapdsp"
1997 mp1_decoder_select="mpegaudio"
1998 mp1float_decoder_select="mpegaudio"
1999 mp2_decoder_select="mpegaudio"
2000 mp2float_decoder_select="mpegaudio"
2001 mp3_decoder_select="mpegaudio"
2002 mp3adu_decoder_select="mpegaudio"
2003 mp3adufloat_decoder_select="mpegaudio"
2004 mp3float_decoder_select="mpegaudio"
2005 mp3on4_decoder_select="mpegaudio"
2006 mp3on4float_decoder_select="mpegaudio"
2007 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2008 mpc8_decoder_select="mpegaudiodsp"
2009 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2010 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2011 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2012 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2013 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2014 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2015 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2016 mpeg4_encoder_select="h263_encoder"
2017 msa1_decoder_select="mss34dsp"
2018 msmpeg4v1_decoder_select="h263_decoder"
2019 msmpeg4v2_decoder_select="h263_decoder"
2020 msmpeg4v2_encoder_select="h263_encoder"
2021 msmpeg4v3_decoder_select="h263_decoder"
2022 msmpeg4v3_encoder_select="h263_encoder"
2023 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2024 mts2_decoder_select="mss34dsp"
2025 mxpeg_decoder_select="mjpeg_decoder"
2026 nellymoser_decoder_select="mdct sinewin"
2027 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2028 nuv_decoder_select="idctdsp lzo"
2029 on2avc_decoder_select="mdct"
2030 opus_decoder_deps="avresample"
2031 opus_decoder_select="imdct15"
2032 png_decoder_deps="zlib"
2033 png_encoder_deps="zlib"
2034 png_encoder_select="huffyuvencdsp"
2035 prores_decoder_select="idctdsp"
2036 prores_encoder_select="fdctdsp"
2037 qcelp_decoder_select="lsp"
2038 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2039 ra_144_encoder_select="audio_frame_queue lpc"
2040 ralf_decoder_select="golomb"
2041 rscc_decoder_deps="zlib"
2042 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2043 rv10_encoder_select="h263_encoder"
2044 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2045 rv20_encoder_select="h263_encoder"
2046 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2047 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2048 screenpresso_decoder_deps="zlib"
2049 shorten_decoder_select="golomb"
2050 sipr_decoder_select="lsp"
2051 sp5x_decoder_select="mjpeg_decoder"
2052 svq1_decoder_select="hpeldsp"
2053 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2054 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2055 svq3_decoder_suggest="zlib"
2056 tak_decoder_select="audiodsp"
2057 tdsc_decoder_deps="zlib"
2058 tdsc_decoder_select="mjpeg_decoder"
2059 theora_decoder_select="vp3_decoder"
2060 thp_decoder_select="mjpeg_decoder"
2061 tiff_decoder_suggest="zlib"
2062 tiff_encoder_suggest="zlib"
2063 truehd_decoder_select="mlp_decoder"
2064 truemotion2_decoder_select="bswapdsp"
2065 truespeech_decoder_select="bswapdsp"
2066 tscc_decoder_deps="zlib"
2067 txd_decoder_select="texturedsp"
2068 twinvq_decoder_select="mdct lsp sinewin"
2069 utvideo_decoder_select="bswapdsp"
2070 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2071 vble_decoder_select="huffyuvdsp"
2072 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2073 vc1image_decoder_select="vc1_decoder"
2074 vorbis_decoder_select="mdct"
2075 vorbis_encoder_select="mdct"
2076 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2077 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2078 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2079 vp6a_decoder_select="vp6_decoder"
2080 vp6f_decoder_select="vp6_decoder"
2081 vp7_decoder_select="h264pred videodsp vp8dsp"
2082 vp8_decoder_select="h264pred videodsp vp8dsp"
2083 vp9_decoder_select="videodsp"
2084 webp_decoder_select="vp8_decoder"
2085 wmapro_decoder_select="mdct sinewin wma_freqs"
2086 wmav1_decoder_select="mdct sinewin wma_freqs"
2087 wmav1_encoder_select="mdct sinewin wma_freqs"
2088 wmav2_decoder_select="mdct sinewin wma_freqs"
2089 wmav2_encoder_select="mdct sinewin wma_freqs"
2090 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2091 wmv1_decoder_select="h263_decoder"
2092 wmv1_encoder_select="h263_encoder"
2093 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2094 wmv2_encoder_select="h263_encoder wmv2dsp"
2095 wmv3_decoder_select="vc1_decoder"
2096 wmv3image_decoder_select="wmv3_decoder"
2097 zerocodec_decoder_deps="zlib"
2098 zlib_decoder_deps="zlib"
2099 zlib_encoder_deps="zlib"
2100 zmbv_decoder_deps="zlib"
2101 zmbv_encoder_deps="zlib"
2102
2103 # hardware accelerators
2104 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2105 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2106 vaapi_deps="va_va_h"
2107 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2108 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2109 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2110
2111 h263_vaapi_hwaccel_deps="vaapi"
2112 h263_vaapi_hwaccel_select="h263_decoder"
2113 h264_d3d11va_hwaccel_deps="d3d11va"
2114 h264_d3d11va_hwaccel_select="h264_decoder"
2115 h264_dxva2_hwaccel_deps="dxva2"
2116 h264_dxva2_hwaccel_select="h264_decoder"
2117 h264_mmal_decoder_deps="mmal"
2118 h264_mmal_decoder_select="mmal"
2119 h264_mmal_hwaccel_deps="mmal"
2120 h264_omx_encoder_deps="omx"
2121 h264_qsv_hwaccel_deps="libmfx"
2122 h264_vaapi_hwaccel_deps="vaapi"
2123 h264_vaapi_hwaccel_select="h264_decoder"
2124 h264_vda_hwaccel_deps="vda"
2125 h264_vda_hwaccel_select="h264_decoder"
2126 h264_vda_old_hwaccel_deps="vda"
2127 h264_vda_old_hwaccel_select="h264_decoder"
2128 h264_vdpau_hwaccel_deps="vdpau"
2129 h264_vdpau_hwaccel_select="h264_decoder"
2130 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2131 hevc_d3d11va_hwaccel_select="hevc_decoder"
2132 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2133 hevc_dxva2_hwaccel_select="hevc_decoder"
2134 hevc_qsv_hwaccel_deps="libmfx"
2135 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2136 hevc_vdpau_hwaccel_select="hevc_decoder"
2137 mpeg1_vdpau_hwaccel_deps="vdpau"
2138 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2139 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2140 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2141 mpeg2_dxva2_hwaccel_deps="dxva2"
2142 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2143 mpeg2_mmal_decoder_deps="mmal"
2144 mpeg2_mmal_decoder_select="mmal"
2145 mpeg2_mmal_hwaccel_deps="mmal"
2146 mpeg2_qsv_hwaccel_deps="libmfx"
2147 mpeg2_vaapi_hwaccel_deps="vaapi"
2148 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2149 mpeg2_vdpau_hwaccel_deps="vdpau"
2150 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2151 mpeg4_omx_encoder_deps="omx"
2152 mpeg4_vaapi_hwaccel_deps="vaapi"
2153 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2154 mpeg4_vdpau_hwaccel_deps="vdpau"
2155 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2156 vc1_d3d11va_hwaccel_deps="d3d11va"
2157 vc1_d3d11va_hwaccel_select="vc1_decoder"
2158 vc1_dxva2_hwaccel_deps="dxva2"
2159 vc1_dxva2_hwaccel_select="vc1_decoder"
2160 vc1_mmal_decoder_deps="mmal"
2161 vc1_mmal_decoder_select="mmal"
2162 vc1_mmal_hwaccel_deps="mmal"
2163 vc1_vaapi_hwaccel_deps="vaapi"
2164 vc1_vaapi_hwaccel_select="vc1_decoder"
2165 vc1_vdpau_hwaccel_deps="vdpau"
2166 vc1_vdpau_hwaccel_select="vc1_decoder"
2167 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2168 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2169 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2170 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2171
2172 # hardware-accelerated codecs
2173 nvenc_deps_any="dlopen LoadLibrary"
2174 nvenc_extralibs='$ldl'
2175 omx_deps="dlopen pthreads"
2176 omx_extralibs='$ldl'
2177 qsvdec_select="qsv"
2178 qsvenc_select="qsv"
2179 vaapi_encode_deps="vaapi"
2180
2181 hwupload_cuda_filter_deps="cuda"
2182 scale_npp_filter_deps="cuda libnpp"
2183
2184 h264_nvenc_encoder_deps="nvenc"
2185 h264_qsv_decoder_deps="libmfx"
2186 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2187 h264_qsv_encoder_deps="libmfx"
2188 h264_qsv_encoder_select="qsvenc"
2189 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2190 h264_vaapi_encoder_select="vaapi_encode golomb"
2191
2192 hevc_nvenc_encoder_deps="nvenc"
2193 hevc_qsv_decoder_deps="libmfx"
2194 hevc_qsv_encoder_deps="libmfx"
2195 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2196 hevc_qsv_encoder_select="qsvenc"
2197 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2198 hevc_vaapi_encoder_select="vaapi_encode golomb"
2199 mpeg2_qsv_decoder_deps="libmfx"
2200 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2201 mpeg2_qsv_encoder_deps="libmfx"
2202 mpeg2_qsv_encoder_select="qsvenc"
2203
2204 nvenc_h264_encoder_deps="nvenc"
2205 nvenc_hevc_encoder_deps="nvenc"
2206
2207 # parsers
2208 h264_parser_select="golomb h264dsp"
2209 hevc_parser_select="golomb"
2210 mpegvideo_parser_select="mpegvideo"
2211 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2212 vc1_parser_select="vc1dsp"
2213
2214 # bitstream_filters
2215 mjpeg2jpeg_bsf_select="jpegtables"
2216
2217 # external libraries
2218 libdcadec_decoder_deps="libdcadec"
2219 libfaac_encoder_deps="libfaac"
2220 libfaac_encoder_select="audio_frame_queue"
2221 libfdk_aac_decoder_deps="libfdk_aac"
2222 libfdk_aac_encoder_deps="libfdk_aac"
2223 libfdk_aac_encoder_select="audio_frame_queue"
2224 libgsm_decoder_deps="libgsm"
2225 libgsm_encoder_deps="libgsm"
2226 libgsm_ms_decoder_deps="libgsm"
2227 libgsm_ms_encoder_deps="libgsm"
2228 libilbc_decoder_deps="libilbc"
2229 libilbc_encoder_deps="libilbc"
2230 libkvazaar_encoder_deps="libkvazaar"
2231 libmp3lame_encoder_deps="libmp3lame"
2232 libmp3lame_encoder_select="audio_frame_queue"
2233 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2234 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2235 libopencore_amrnb_encoder_select="audio_frame_queue"
2236 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2237 libopenh264_encoder_deps="libopenh264"
2238 libopenjpeg_decoder_deps="libopenjpeg"
2239 libopenjpeg_encoder_deps="libopenjpeg"
2240 libopus_decoder_deps="libopus"
2241 libopus_encoder_deps="libopus"
2242 libopus_encoder_select="audio_frame_queue"
2243 libschroedinger_decoder_deps="libschroedinger"
2244 libschroedinger_encoder_deps="libschroedinger"
2245 libspeex_decoder_deps="libspeex"
2246 libspeex_encoder_deps="libspeex"
2247 libspeex_encoder_select="audio_frame_queue"
2248 libtheora_encoder_deps="libtheora"
2249 libtwolame_encoder_deps="libtwolame"
2250 libvo_aacenc_encoder_deps="libvo_aacenc"
2251 libvo_aacenc_encoder_select="audio_frame_queue"
2252 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2253 libvorbis_encoder_deps="libvorbis"
2254 libvorbis_encoder_select="audio_frame_queue"
2255 libvpx_vp8_decoder_deps="libvpx"
2256 libvpx_vp8_encoder_deps="libvpx"
2257 libvpx_vp9_decoder_deps="libvpx"
2258 libvpx_vp9_encoder_deps="libvpx"
2259 libwavpack_encoder_deps="libwavpack"
2260 libwebp_encoder_deps="libwebp"
2261 libx262_encoder_deps="libx262"
2262 libx264_encoder_deps="libx264"
2263 libx265_encoder_deps="libx265"
2264 libxavs_encoder_deps="libxavs"
2265 libxvid_encoder_deps="libxvid"
2266
2267 # demuxers / muxers
2268 ac3_demuxer_select="ac3_parser"
2269 asf_demuxer_select="riffdec"
2270 asf_muxer_select="riffenc"
2271 asf_stream_muxer_select="asf_muxer"
2272 avi_demuxer_select="iso_media riffdec"
2273 avi_muxer_select="riffenc"
2274 avisynth_demuxer_deps="avisynth"
2275 avisynth_demuxer_select="riffdec"
2276 caf_demuxer_select="iso_media riffdec"
2277 dash_muxer_select="mp4_muxer"
2278 dirac_demuxer_select="dirac_parser"
2279 dv_demuxer_select="dvprofile"
2280 dv_muxer_select="dvprofile"
2281 dxa_demuxer_select="riffdec"
2282 eac3_demuxer_select="ac3_parser"
2283 f4v_muxer_select="mov_muxer"
2284 flac_demuxer_select="flac_parser"
2285 hds_muxer_select="flv_muxer"
2286 hls_muxer_select="mpegts_muxer"
2287 ipod_muxer_select="mov_muxer"
2288 ismv_muxer_select="mov_muxer"
2289 matroska_audio_muxer_select="matroska_muxer"
2290 matroska_demuxer_select="iso_media riffdec"
2291 matroska_demuxer_suggest="bzlib lzo zlib"
2292 matroska_muxer_select="iso_media riffenc"
2293 mmf_muxer_select="riffenc"
2294 mov_demuxer_select="iso_media riffdec"
2295 mov_demuxer_suggest="zlib"
2296 mov_muxer_select="iso_media riffenc rtpenc_chain"
2297 mp3_demuxer_select="mpegaudio_parser"
2298 mp4_muxer_select="mov_muxer"
2299 mpegts_demuxer_select="iso_media"
2300 mpegts_muxer_select="adts_muxer latm_muxer"
2301 mpegtsraw_demuxer_select="mpegts_demuxer"
2302 mxf_d10_muxer_select="mxf_muxer"
2303 nut_muxer_select="riffenc"
2304 nuv_demuxer_select="riffdec"
2305 oga_muxer_select="ogg_muxer"
2306 ogg_demuxer_select="dirac_parse"
2307 opus_muxer_select="ogg_muxer"
2308 psp_muxer_select="mov_muxer"
2309 rtp_demuxer_select="sdp_demuxer"
2310 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2311 rtsp_demuxer_select="http_protocol rtpdec"
2312 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2313 sap_demuxer_select="sdp_demuxer"
2314 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2315 sdp_demuxer_select="rtpdec"
2316 smoothstreaming_muxer_select="ismv_muxer"
2317 spdif_muxer_select="aac_parser"
2318 spx_muxer_select="ogg_muxer"
2319 swf_demuxer_suggest="zlib"
2320 tak_demuxer_select="tak_parser"
2321 tg2_muxer_select="mov_muxer"
2322 tgp_muxer_select="mov_muxer"
2323 w64_demuxer_select="wav_demuxer"
2324 wav_demuxer_select="riffdec"
2325 wav_muxer_select="riffenc"
2326 webm_muxer_select="iso_media riffenc"
2327 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2328 wtv_demuxer_select="mpegts_demuxer riffdec"
2329 xmv_demuxer_select="riffdec"
2330 xwma_demuxer_select="riffdec"
2331
2332 # indevs / outdevs
2333 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2334 alsa_outdev_deps="alsa_asoundlib_h"
2335 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2336 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2337 dv1394_indev_deps="dv1394"
2338 dv1394_indev_select="dv_demuxer"
2339 fbdev_indev_deps="linux_fb_h"
2340 jack_indev_deps="jack_jack_h"
2341 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2342 libcdio_indev_deps="libcdio"
2343 libdc1394_indev_deps="libdc1394"
2344 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2345 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2346 pulse_indev_deps="libpulse"
2347 sndio_indev_deps="sndio_h"
2348 sndio_outdev_deps="sndio_h"
2349 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2350 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2351 vfwcap_indev_extralibs="-lavicap32"
2352 x11grab_indev_deps="x11grab"
2353 x11grab_xcb_indev_deps="libxcb"
2354
2355 # protocols
2356 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2357 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2358 ffrtmpcrypt_protocol_select="tcp_protocol"
2359 ffrtmphttp_protocol_deps="!librtmp_protocol"
2360 ffrtmphttp_protocol_select="http_protocol"
2361 gopher_protocol_select="network"
2362 http_protocol_select="tcp_protocol"
2363 httpproxy_protocol_select="tcp_protocol"
2364 https_protocol_select="tls_protocol"
2365 icecast_protocol_select="http_protocol"
2366 librtmp_protocol_deps="librtmp"
2367 librtmpe_protocol_deps="librtmp"
2368 librtmps_protocol_deps="librtmp"
2369 librtmpt_protocol_deps="librtmp"
2370 librtmpte_protocol_deps="librtmp"
2371 mmsh_protocol_select="http_protocol"
2372 mmst_protocol_select="network"
2373 rtmp_protocol_deps="!librtmp_protocol"
2374 rtmp_protocol_select="tcp_protocol"
2375 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2376 rtmps_protocol_deps="!librtmp_protocol"
2377 rtmps_protocol_select="tls_protocol"
2378 rtmpt_protocol_select="ffrtmphttp_protocol"
2379 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2380 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2381 rtp_protocol_select="udp_protocol"
2382 sctp_protocol_deps="struct_sctp_event_subscribe"
2383 sctp_protocol_select="network"
2384 srtp_protocol_select="rtp_protocol srtp"
2385 tcp_protocol_select="network"
2386 tls_gnutls_protocol_deps="gnutls"
2387 tls_gnutls_protocol_select="tcp_protocol"
2388 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2389 tls_openssl_protocol_select="tcp_protocol"
2390 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2391 udp_protocol_select="network"
2392 unix_protocol_deps="sys_un_h"
2393 unix_protocol_select="network"
2394
2395 # filters
2396 blackframe_filter_deps="gpl"
2397 boxblur_filter_deps="gpl"
2398 bs2b_filter_deps="libbs2b"
2399 cropdetect_filter_deps="gpl"
2400 delogo_filter_deps="gpl"
2401 drawtext_filter_deps="libfreetype"
2402 frei0r_filter_deps="frei0r dlopen"
2403 frei0r_filter_extralibs='$ldl'
2404 frei0r_src_filter_deps="frei0r dlopen"
2405 frei0r_src_filter_extralibs='$ldl'
2406 hqdn3d_filter_deps="gpl"
2407 interlace_filter_deps="gpl"
2408 ocv_filter_deps="libopencv"
2409 resample_filter_deps="avresample"
2410 scale_filter_deps="swscale"
2411 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2412
2413 # examples
2414 avcodec_example_deps="avcodec avutil"
2415 filter_audio_example_deps="avfilter avutil"
2416 metadata_example_deps="avformat avutil"
2417 output_example_deps="avcodec avformat avutil swscale"
2418 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2419 transcode_aac_example_deps="avcodec avformat avresample"
2420
2421 # libraries, in linking order
2422 avcodec_deps="avutil"
2423 avdevice_deps="avformat avcodec avutil"
2424 avfilter_deps="avutil"
2425 avformat_deps="avcodec avutil"
2426 avresample_deps="avutil"
2427 swscale_deps="avutil"
2428
2429 # programs
2430 avconv_deps="avcodec avfilter avformat avresample swscale"
2431 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2432                fps_filter null_filter resample_filter scale_filter
2433                setpts_filter trim_filter"
2434 avplay_deps="avcodec avfilter avformat avresample sdl"
2435 avplay_libs='$sdl_libs'
2436 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2437 avprobe_deps="avcodec avformat"
2438
2439 # documentation
2440 pod2man_deps="doc"
2441 texi2html_deps="doc"
2442
2443 # default parameters
2444
2445 logfile="config.log"
2446
2447 # installation paths
2448 prefix_default="/usr/local"
2449 bindir_default='${prefix}/bin'
2450 datadir_default='${prefix}/share/avconv'
2451 docdir_default='${prefix}/share/doc/libav'
2452 incdir_default='${prefix}/include'
2453 libdir_default='${prefix}/lib'
2454 mandir_default='${prefix}/share/man'
2455 shlibdir_default="$libdir_default"
2456
2457 # toolchain
2458 ar_default="ar"
2459 cc_default="gcc"
2460 host_cc_default="gcc"
2461 cp_f="cp -f"
2462 ln_s="ln -s -f"
2463 nm_default="nm -g"
2464 objformat="elf"
2465 pkg_config_default=pkg-config
2466 ranlib="ranlib"
2467 strip="strip"
2468 yasmexe="yasm"
2469
2470 # machine
2471 arch_default=$(uname -m)
2472 cpu="generic"
2473 intrinsics="none"
2474
2475 # OS
2476 target_os_default=$(tolower $(uname -s))
2477 host_os=$target_os_default
2478
2479 # configurable options
2480 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2481
2482 enable asm
2483 enable debug
2484 enable doc
2485 enable faan faandct faanidct
2486 enable optimizations
2487 enable safe_bitstream_reader
2488 enable static
2489 enable swscale_alpha
2490 enable valgrind_backtrace
2491
2492 # By default, enable only those hwaccels that have no external dependencies.
2493 enable d3d11va dxva2 vda vdpau
2494
2495 # build settings
2496 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2497 LIBPREF="lib"
2498 LIBSUF=".a"
2499 FULLNAME='$(NAME)$(BUILDSUF)'
2500 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2501 SLIBPREF="lib"
2502 SLIBSUF=".so"
2503 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2504 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2505 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2506 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2507 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2508 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2509
2510 asflags_filter=echo
2511 cflags_filter=echo
2512 ldflags_filter=echo
2513
2514 AS_C='-c'
2515 AS_O='-o $@'
2516 CC_C='-c'
2517 CC_E='-E -o $@'
2518 CC_O='-o $@'
2519 OBJCC_C='-c'
2520 OBJCC_E='-E -o $@'
2521 OBJCC_O='-o $@'
2522 LD_O='-o $@'
2523 LD_LIB='-l%'
2524 LD_PATH='-L'
2525 HOSTCC_C='-c'
2526 HOSTCC_E='-E -o $@'
2527 HOSTCC_O='-o $@'
2528 HOSTLD_O='-o $@'
2529
2530 host_libs='-lm'
2531 host_cflags_filter=echo
2532 host_ldflags_filter=echo
2533
2534 target_path='$(CURDIR)'
2535
2536 # since the object filename is not given with the -MM flag, the compiler
2537 # is only able to print the basename, and we must add the path ourselves
2538 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2539 DEPFLAGS='-MM'
2540
2541 # find source path
2542 if test -f configure; then
2543     source_path=.
2544 else
2545     source_path=$(cd $(dirname "$0"); pwd)
2546     echo "$source_path" | grep -q '[[:blank:]]' &&
2547         die "Out of tree builds are impossible with whitespace in source path."
2548     test -e "$source_path/config.h" &&
2549         die "Out of tree builds are impossible with config.h in source dir."
2550 fi
2551
2552 for v in "$@"; do
2553     r=${v#*=}
2554     l=${v%"$r"}
2555     r=$(sh_quote "$r")
2556     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2557 done
2558
2559 find_things(){
2560     thing=$1
2561     pattern=$2
2562     file=$source_path/$3
2563     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2564 }
2565
2566 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2567 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2568 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2569 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2570 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2571 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2572 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2573 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2574 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2575
2576 find_things_extern(){
2577     thing=$1
2578     pattern=$2
2579     file=$source_path/$3
2580     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2581 }
2582
2583 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2584 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2585
2586 ALL_COMPONENTS="
2587     $BSF_LIST
2588     $DECODER_LIST
2589     $DEMUXER_LIST
2590     $ENCODER_LIST
2591     $FILTER_LIST
2592     $HWACCEL_LIST
2593     $INDEV_LIST
2594     $MUXER_LIST
2595     $OUTDEV_LIST
2596     $PARSER_LIST
2597     $PROTOCOL_LIST
2598 "
2599
2600 for n in $COMPONENT_LIST; do
2601     v=$(toupper ${n%s})_LIST
2602     eval enable \$$v
2603     eval ${n}_if_any="\$$v"
2604 done
2605
2606 enable $ARCH_EXT_LIST
2607
2608 die_unknown(){
2609     echo "Unknown option \"$1\"."
2610     echo "See $0 --help for available options."
2611     exit 1
2612 }
2613
2614 print_3_columns() {
2615     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2616 }
2617
2618 show_list() {
2619     suffix=_$1
2620     shift
2621     echo $* | sed s/$suffix//g | print_3_columns
2622     exit 0
2623 }
2624
2625 rand_list(){
2626     IFS=', '
2627     set -- $*
2628     unset IFS
2629     for thing; do
2630         comp=${thing%:*}
2631         prob=${thing#$comp}
2632         prob=${prob#:}
2633         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2634         echo "prob ${prob:-0.5}"
2635         printf '%s\n' $comp
2636     done
2637 }
2638
2639 do_random(){
2640     action=$1
2641     shift
2642     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2643     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2644 }
2645
2646 for opt do
2647     optval="${opt#*=}"
2648     case "$opt" in
2649         --extra-ldflags=*)
2650             add_ldflags $optval
2651         ;;
2652         --extra-ldexeflags=*)
2653             add_ldexeflags $optval
2654         ;;
2655         --extra-libs=*)
2656             add_extralibs $optval
2657         ;;
2658         --disable-devices)
2659             disable $INDEV_LIST $OUTDEV_LIST
2660         ;;
2661         --enable-debug=*)
2662             debuglevel="$optval"
2663         ;;
2664         --disable-programs)
2665             disable $PROGRAM_LIST
2666         ;;
2667         --disable-everything)
2668             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2669         ;;
2670         --disable-all)
2671             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2672             disable $LIBRARY_LIST $PROGRAM_LIST doc
2673         ;;
2674         --enable-random|--disable-random)
2675             action=${opt%%-random}
2676             do_random ${action#--} $COMPONENT_LIST
2677         ;;
2678         --enable-random=*|--disable-random=*)
2679             action=${opt%%-random=*}
2680             do_random ${action#--} $optval
2681         ;;
2682         --enable-*=*|--disable-*=*)
2683             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2684             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2685             eval list=\$$(toupper $thing)_LIST
2686             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2687             $action $(filter "$name" $list)
2688         ;;
2689         --enable-avserver|--disable-avserver*)
2690             warn "avserver has been removed, the ${opt} option is only"\
2691                  "provided for compatibility and will be removed in the future"
2692         ;;
2693         --enable-?*|--disable-?*)
2694             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2695             if is_in $option $COMPONENT_LIST; then
2696                 test $action = disable && action=unset
2697                 eval $action \$$(toupper ${option%s})_LIST
2698             elif is_in $option $CMDLINE_SELECT; then
2699                 $action $option
2700             else
2701                 die_unknown $opt
2702             fi
2703         ;;
2704         --list-*)
2705             NAME="${opt#--list-}"
2706             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2707             NAME=${NAME%s}
2708             eval show_list $NAME \$$(toupper $NAME)_LIST
2709         ;;
2710         --help|-h) show_help
2711         ;;
2712         *)
2713             optname="${opt%%=*}"
2714             optname="${optname#--}"
2715             optname=$(echo "$optname" | sed 's/-/_/g')
2716             if is_in $optname $CMDLINE_SET; then
2717                 eval $optname='$optval'
2718             elif is_in $optname $CMDLINE_APPEND; then
2719                 append $optname "$optval"
2720             else
2721                 die_unknown $opt
2722             fi
2723         ;;
2724     esac
2725 done
2726
2727 for e in $env; do
2728     eval "export $e"
2729 done
2730
2731 disabled logging && logfile=/dev/null
2732
2733 # Disable all the library-specific components if the library itself
2734 # is disabled, see AVCODEC_LIST and following _LIST variables.
2735
2736 disable_components(){
2737     disabled ${1} && disable $(
2738         eval components="\$$(toupper ${1})_COMPONENTS"
2739         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2740     )
2741 }
2742
2743 map 'disable_components $v' $LIBRARY_LIST
2744
2745 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2746 set >> $logfile
2747
2748 case "$toolchain" in
2749     *-asan)
2750         cc_default="${toolchain%-asan}"
2751         add_cflags  -fsanitize=address
2752         add_ldflags -fsanitize=address
2753     ;;
2754     *-msan)
2755         cc_default="${toolchain%-msan}"
2756         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2757         add_ldflags -fsanitize=memory
2758     ;;
2759     *-tsan)
2760         cc_default="${toolchain%-tsan}"
2761         add_cflags  -fsanitize=thread -pie
2762         add_ldflags -fsanitize=thread -pie
2763         case "$toolchain" in
2764             gcc-tsan)
2765                 add_cflags  -fPIC
2766                 add_ldflags -fPIC
2767                 ;;
2768         esac
2769     ;;
2770     *-usan)
2771         cc_default="${toolchain%-usan}"
2772         add_cflags  -fsanitize=undefined
2773         add_ldflags -fsanitize=undefined
2774         case "$toolchain" in
2775             clang-usan)
2776                 add_cflags -O1
2777                 ;;
2778         esac
2779     ;;
2780     valgrind-*)
2781         target_exec_default="valgrind"
2782         case "$toolchain" in
2783             valgrind-massif)
2784                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2785                 ;;
2786             valgrind-memcheck)
2787                 target_exec_args="--track-origins=yes --leak-check=full"
2788                 ;;
2789         esac
2790     ;;
2791     msvc)
2792         # Check whether the current MSVC version needs the C99 converter.
2793         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2794         # support enough of C99 to build libav. Default to the new
2795         # behaviour if the regexp was unable to match anything, since this
2796         # successfully parses the version number of existing supported
2797         # versions that require the converter (MSVC 2010 and 2012).
2798         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2799         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2800             cc_default="cl"
2801         else
2802             cc_default="c99wrap cl"
2803         fi
2804         ld_default="$source_path/compat/windows/mslink"
2805         nm_default="dumpbin -symbols"
2806         ar_default="lib"
2807         case "$arch" in
2808         arm*)
2809             as_default="armasm"
2810             ;;
2811         esac
2812         target_os_default="win32"
2813         # Use a relative path for TMPDIR. This makes sure all the
2814         # ffconf temp files are written with a relative path, avoiding
2815         # issues with msys/win32 path conversion for MSVC parameters
2816         # such as -Fo<file> or -out:<file>.
2817         TMPDIR=.
2818     ;;
2819     icl)
2820         cc_default="icl"
2821         ld_default="xilink"
2822         nm_default="dumpbin -symbols"
2823         ar_default="xilib"
2824         target_os_default="win32"
2825         TMPDIR=.
2826     ;;
2827     gcov)
2828         add_cflags  -fprofile-arcs -ftest-coverage
2829         add_ldflags -fprofile-arcs -ftest-coverage
2830     ;;
2831     llvm-cov)
2832         add_cflags -fprofile-arcs -ftest-coverage
2833         add_ldflags --coverage
2834     ;;
2835     hardened)
2836         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2837         add_cflags   -fno-strict-overflow -fstack-protector-all
2838         add_ldflags  -Wl,-z,relro -Wl,-z,now
2839     ;;
2840     ?*)
2841         die "Unknown toolchain $toolchain"
2842     ;;
2843 esac
2844
2845 test -n "$cross_prefix" && enable cross_compile
2846
2847 if enabled cross_compile; then
2848     test -n "$arch" && test -n "$target_os" ||
2849         die "Must specify target arch and OS when cross-compiling"
2850 fi
2851
2852 ar_default="${cross_prefix}${ar_default}"
2853 cc_default="${cross_prefix}${cc_default}"
2854 occ_default="${cross_prefix}${occ_default}"
2855 nm_default="${cross_prefix}${nm_default}"
2856 pkg_config_default="${cross_prefix}${pkg_config_default}"
2857 ranlib="${cross_prefix}${ranlib}"
2858 strip="${cross_prefix}${strip}"
2859
2860 sysinclude_default="${sysroot}/usr/include"
2861
2862 set_default arch cc pkg_config sysinclude target_exec target_os
2863 enabled cross_compile || host_cc_default=$cc
2864 set_default host_cc
2865
2866 if ! $pkg_config --version >/dev/null 2>&1; then
2867     warn "$pkg_config not found, library detection may fail."
2868     pkg_config=false
2869 fi
2870
2871 exesuf() {
2872     case $1 in
2873         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2874     esac
2875 }
2876
2877 EXESUF=$(exesuf $target_os)
2878 HOSTEXESUF=$(exesuf $host_os)
2879
2880 # set temporary file name
2881 : ${TMPDIR:=$TEMPDIR}
2882 : ${TMPDIR:=$TMP}
2883 : ${TMPDIR:=/tmp}
2884
2885 if ! check_cmd mktemp -u XXXXXX; then
2886     # simple replacement for missing mktemp
2887     # NOT SAFE FOR GENERAL USE
2888     mktemp(){
2889         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2890     }
2891 fi
2892
2893 tmpfile(){
2894     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2895         (set -C; exec > $tmp) 2>/dev/null ||
2896         die "Unable to create temporary file in $TMPDIR."
2897     append TMPFILES $tmp
2898     eval $1=$tmp
2899 }
2900
2901 trap 'rm -f -- $TMPFILES' EXIT
2902
2903 tmpfile TMPASM .asm
2904 tmpfile TMPC   .c
2905 tmpfile TMPE   $EXESUF
2906 tmpfile TMPH   .h
2907 tmpfile TMPO   .o
2908 tmpfile TMPS   .S
2909 tmpfile TMPSH  .sh
2910 tmpfile TMPV   .ver
2911
2912 unset -f mktemp
2913
2914 chmod +x $TMPE
2915
2916 # make sure we can execute files in $TMPDIR
2917 cat > $TMPSH 2>> $logfile <<EOF
2918 #! /bin/sh
2919 EOF
2920 chmod +x $TMPSH >> $logfile 2>&1
2921 if ! $TMPSH >> $logfile 2>&1; then
2922     cat <<EOF
2923 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2924 variable to another directory and make sure that it is not mounted noexec.
2925 EOF
2926     die "Sanity test failed."
2927 fi
2928
2929 armasm_flags(){
2930     for flag; do
2931         case $flag in
2932             # Filter out MSVC cl.exe options from cflags that shouldn't
2933             # be passed to gas-preprocessor
2934             -M[TD]*)                                            ;;
2935             *)                  echo $flag                      ;;
2936         esac
2937    done
2938 }
2939
2940 ccc_flags(){
2941     for flag; do
2942         case $flag in
2943             -std=c99)           echo -c99                       ;;
2944             -mcpu=*)            echo -arch ${flag#*=}           ;;
2945             -mieee)             echo -ieee                      ;;
2946             -O*|-fast)          echo $flag                      ;;
2947             -fno-math-errno)    echo -assume nomath_errno       ;;
2948             -g)                 echo -g3                        ;;
2949             -Wall)              echo -msg_enable level2         ;;
2950             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2951             -Wl,*)              echo $flag                      ;;
2952             -f*|-W*)                                            ;;
2953             *)                  echo $flag                      ;;
2954         esac
2955    done
2956 }
2957
2958 cparser_flags(){
2959     for flag; do
2960         case $flag in
2961             -Wno-switch)             echo -Wno-switch-enum ;;
2962             -Wno-format-zero-length) ;;
2963             -Wdisabled-optimization) ;;
2964             -Wno-pointer-sign)       echo -Wno-other ;;
2965             *)                       echo $flag ;;
2966         esac
2967     done
2968 }
2969
2970 msvc_common_flags(){
2971     for flag; do
2972         case $flag in
2973             # In addition to specifying certain flags under the compiler
2974             # specific filters, they must be specified here as well or else the
2975             # generic catch all at the bottom will print the original flag.
2976             -Wall)                ;;
2977             -std=c99)             ;;
2978             # Common flags
2979             -fomit-frame-pointer) ;;
2980             -g)                   echo -Z7 ;;
2981             -fno-math-errno)      ;;
2982             -fno-common)          ;;
2983             -fno-signed-zeros)    ;;
2984             -fPIC)                ;;
2985             -mthumb)              ;;
2986             -march=*)             ;;
2987             -lz)                  echo zlib.lib ;;
2988             -lavifil32)           echo vfw32.lib ;;
2989             -lavicap32)           echo vfw32.lib user32.lib ;;
2990             -lx264)               echo libx264.lib ;;
2991             -l*)                  echo ${flag#-l}.lib ;;
2992             -L*)                  echo -libpath:${flag#-L} ;;
2993             *)                    echo $flag ;;
2994         esac
2995     done
2996 }
2997
2998 msvc_flags(){
2999     msvc_common_flags "$@"
3000     for flag; do
3001         case $flag in
3002             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3003                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3004                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3005                                        -wd4273 -wd4554 -wd4701 ;;
3006         esac
3007     done
3008 }
3009
3010 icl_flags(){
3011     msvc_common_flags "$@"
3012     for flag; do
3013         case $flag in
3014             # Despite what Intel's documentation says -Wall, which is supported
3015             # on Windows, does enable remarks so disable them here.
3016             -Wall)                echo $flag -Qdiag-disable:remark ;;
3017             -std=c99)             echo -Qstd=c99 ;;
3018         esac
3019     done
3020 }
3021
3022 pgi_flags(){
3023     for flag; do
3024         case $flag in
3025             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3026             -fomit-frame-pointer) echo -Mnoframe ;;
3027             -g)                   echo -gopt ;;
3028             *)                    echo $flag ;;
3029         esac
3030     done
3031 }
3032
3033 suncc_flags(){
3034     for flag; do
3035         case $flag in
3036             -march=*|-mcpu=*)
3037                 case "${flag#*=}" in
3038                     native)                   echo -xtarget=native       ;;
3039                     v9|niagara)               echo -xarch=sparc          ;;
3040                     ultrasparc)               echo -xarch=sparcvis       ;;
3041                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3042                     i586|pentium)             echo -xchip=pentium        ;;
3043                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3044                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3045                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3046                     pentium4*)          echo -xtarget=pentium4           ;;
3047                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3048                     *-sse3)             echo -xarch=sse3                 ;;
3049                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3050                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3051                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3052                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3053                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3054                     k8|opteron|athlon64|athlon-fx)
3055                                                echo -xarch=sse2a         ;;
3056                     athlon*)                   echo -xarch=pentium_proa  ;;
3057                 esac
3058                 ;;
3059             -std=c99)             echo -xc99              ;;
3060             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3061             -fPIC)                echo -KPIC -xcode=pic32 ;;
3062             -W*,*)                echo $flag              ;;
3063             -f*-*|-W*|-mimpure-text)                      ;;
3064             -shared)              echo -G                 ;;
3065             *)                    echo $flag              ;;
3066         esac
3067     done
3068 }
3069
3070 tms470_flags(){
3071     for flag; do
3072         case $flag in
3073             -march=*|-mcpu=*)
3074                 case "${flag#*=}" in
3075                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3076                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3077                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3078                     armv6*|arm11*)          echo -mv=6   ;;
3079                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3080                                             echo -mv=5e  ;;
3081                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3082                 esac
3083                 ;;
3084             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3085             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3086             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3087             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3088             -msoft-float)   echo --float_support=vfplib       ;;
3089             -O[0-3]|-mf=*)  echo $flag                        ;;
3090             -g)             echo -g -mn                       ;;
3091             -pds=*)         echo $flag                        ;;
3092             -D*|-I*)        echo $flag                        ;;
3093             --gcc|--abi=*)  echo $flag                        ;;
3094             -me)            echo $flag                        ;;
3095         esac
3096     done
3097 }
3098
3099 probe_cc(){
3100     pfx=$1
3101     _cc=$2
3102
3103     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3104     unset _ld_o _ldflags _ld_lib _ld_path
3105     unset _depflags _DEPCMD _DEPFLAGS
3106     _flags_filter=echo
3107
3108     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3109         _type=llvm_gcc
3110         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3111         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3112         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3113         _cflags_speed='-O3'
3114         _cflags_size='-Os'
3115     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3116         _type=gcc
3117         gcc_version=$($_cc --version | head -n1)
3118         gcc_basever=$($_cc -dumpversion)
3119         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3120         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3121         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3122         if ! $_cc -dumpversion | grep -q '^2\.'; then
3123             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3124         fi
3125         _cflags_speed='-O3'
3126         _cflags_size='-Os'
3127     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3128         _type=icc
3129         _ident=$($_cc --version | head -n1)
3130         _depflags='-MMD'
3131         _cflags_speed='-O3'
3132         _cflags_size='-Os'
3133         _cflags_noopt='-O1'
3134     elif $_cc -v 2>&1 | grep -q xlc; then
3135         _type=xlc
3136         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3137         _cflags_speed='-O5'
3138         _cflags_size='-O5 -qcompact'
3139     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3140         _type=ccc
3141         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3142         _DEPFLAGS='-M'
3143         _cflags_speed='-fast'
3144         _cflags_size='-O1'
3145         _flags_filter=ccc_flags
3146     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3147         test -d "$sysroot" || die "No valid sysroot specified."
3148         _type=armcc
3149         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3150         armcc_conf="$PWD/armcc.conf"
3151         $_cc --arm_linux_configure                 \
3152              --arm_linux_config_file="$armcc_conf" \
3153              --configure_sysroot="$sysroot"        \
3154              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3155              die "Error creating armcc configuration file."
3156         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3157         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3158         as_default="${cross_prefix}gcc"
3159         _depflags='-MMD'
3160         _cflags_speed='-O3'
3161         _cflags_size='-Os'
3162     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3163         _type=tms470
3164         _ident=$($_cc -version | head -n1 | tr -s ' ')
3165         _flags='--gcc --abi=eabi -me'
3166         _cc_e='-ppl -fe=$@'
3167         _cc_o='-fe=$@'
3168         _depflags='-ppa -ppd=$(@:.o=.d)'
3169         _cflags_speed='-O3 -mf=5'
3170         _cflags_size='-O3 -mf=2'
3171         _flags_filter=tms470_flags
3172     elif $_cc -v 2>&1 | grep -q clang; then
3173         _type=clang
3174         _ident=$($_cc --version 2>/dev/null | head -n1)
3175         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3176         _cflags_speed='-O3'
3177         _cflags_size='-Os'
3178     elif $_cc -V 2>&1 | grep -q Sun; then
3179         _type=suncc
3180         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3181         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3182         _DEPFLAGS='-xM1 -xc99'
3183         _ldflags='-std=c99'
3184         _cflags_speed='-O5'
3185         _cflags_size='-O5 -xspace'
3186         _flags_filter=suncc_flags
3187     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3188         _type=pathscale
3189         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3190         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3191         _cflags_speed='-O2'
3192         _cflags_size='-Os'
3193         _flags_filter='filter_out -Wdisabled-optimization'
3194     elif $_cc -v 2>&1 | grep -q Open64; then
3195         _type=open64
3196         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3197         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3198         _cflags_speed='-O2'
3199         _cflags_size='-Os'
3200         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3201     elif $_cc -V 2>&1 | grep -q Portland; then
3202         _type=pgi
3203         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3204         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3205         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3206         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3207         _cflags_noopt="-O1"
3208         _flags_filter=pgi_flags
3209     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3210         _type=armasm
3211         _ident=$($_cc | head -n1)
3212         # 4509: "This form of conditional instruction is deprecated"
3213         _flags="-nologo -ignore 4509"
3214         _flags_filter=armasm_flags
3215     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3216         _type=msvc
3217         _ident=$($_cc 2>&1 | head -n1)
3218         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3219         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3220         _cflags_speed="-O2"
3221         _cflags_size="-O1"
3222         if $_cc -nologo- 2>&1 | grep -q Linker; then
3223             _ld_o='-out:$@'
3224         else
3225             _ld_o='-Fe$@'
3226         fi
3227         _cc_o='-Fo$@'
3228         _cc_e='-P -Fi$@'
3229         _flags_filter=msvc_flags
3230         _ld_lib='lib%.a'
3231         _ld_path='-libpath:'
3232         _flags='-nologo'
3233         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3234     elif $_cc 2>&1 | grep -q Intel; then
3235         _type=icl
3236         _ident=$($_cc 2>&1 | head -n1)
3237         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3238         # Not only is O3 broken on 13.x+ but it is slower on all previous
3239         # versions (tested) as well.
3240         _cflags_speed="-O2"
3241         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3242         if $_cc 2>&1 | grep -q Linker; then
3243             _ld_o='-out:$@'
3244         else
3245             _ld_o='-Fe$@'
3246         fi
3247         _cc_o='-Fo$@'
3248         _cc_e='-P'
3249         _flags_filter=icl_flags
3250         _ld_lib='lib%.a'
3251         _ld_path='-libpath:'
3252         # -Qdiag-error to make icl error when seeing certain unknown arguments
3253         _flags='-nologo -Qdiag-error:4044,10157'
3254         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3255         # with MSVC which enables it by default.
3256         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS'
3257     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3258         _type=cparser
3259         _ident=$($_cc --version | head -n1)
3260         _depflags='-MMD'
3261         _cflags_speed='-O4'
3262         _cflags_size='-O2'
3263         _flags_filter=cparser_flags
3264     fi
3265
3266     eval ${pfx}_type=\$_type
3267     eval ${pfx}_ident=\$_ident
3268 }
3269
3270 set_ccvars(){
3271     eval ${1}_C=\${_cc_c-\${${1}_C}}
3272     eval ${1}_E=\${_cc_e-\${${1}_E}}
3273     eval ${1}_O=\${_cc_o-\${${1}_O}}
3274
3275     if [ -n "$_depflags" ]; then
3276         eval ${1}_DEPFLAGS=\$_depflags
3277     else
3278         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3279         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3280         eval DEP${1}FLAGS=\$_flags
3281     fi
3282 }
3283
3284 probe_cc cc "$cc"
3285 cflags_filter=$_flags_filter
3286 cflags_speed=$_cflags_speed
3287 cflags_size=$_cflags_size
3288 cflags_noopt=$_cflags_noopt
3289 add_cflags $_flags $_cflags
3290 cc_ldflags=$_ldflags
3291 set_ccvars CC
3292
3293 probe_cc hostcc "$host_cc"
3294 host_cflags_filter=$_flags_filter
3295 add_host_cflags  $_flags $_cflags
3296 set_ccvars HOSTCC
3297
3298 test -n "$cc_type" && enable $cc_type ||
3299     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3300
3301 : ${as_default:=$cc}
3302 : ${objcc_default:=$cc}
3303 : ${dep_cc_default:=$cc}
3304 : ${ld_default:=$cc}
3305 : ${host_ld_default:=$host_cc}
3306 set_default ar as objcc dep_cc ld host_ld
3307
3308 probe_cc as "$as"
3309 asflags_filter=$_flags_filter
3310 add_asflags $_flags $_cflags
3311 set_ccvars AS
3312
3313 probe_cc objcc "$objcc"
3314 objcflags_filter=$_flags_filter
3315 add_objcflags $_flags $_cflags
3316 set_ccvars OBJC
3317
3318 probe_cc ld "$ld"
3319 ldflags_filter=$_flags_filter
3320 add_ldflags $_flags $_ldflags
3321 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3322 LD_O=${_ld_o-$LD_O}
3323 LD_LIB=${_ld_lib-$LD_LIB}
3324 LD_PATH=${_ld_path-$LD_PATH}
3325
3326 probe_cc hostld "$host_ld"
3327 host_ldflags_filter=$_flags_filter
3328 add_host_ldflags $_flags $_ldflags
3329 HOSTLD_O=${_ld_o-$HOSTLD_O}
3330
3331 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3332     probe_cc depcc "$dep_cc"
3333     CCDEP=${_DEPCMD:-$DEPCMD}
3334     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3335     DEPCCFLAGS=$_flags
3336 fi
3337
3338 if $ar 2>&1 | grep -q Microsoft; then
3339     arflags="-nologo"
3340     ar_o='-out:$@'
3341 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3342     arflags="rq"
3343     ar_o='$@'
3344 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3345     arflags='-Xany -r -c'
3346     ar_o='$@'
3347 else
3348     arflags="rc"
3349     ar_o='$@'
3350 fi
3351
3352 add_cflags $extra_cflags
3353 add_objcflags $extra_objcflags
3354 add_asflags $extra_cflags
3355
3356 if test -n "$sysroot"; then
3357     case "$cc_type" in
3358         gcc|llvm_gcc|clang)
3359             add_cppflags --sysroot="$sysroot"
3360             add_ldflags --sysroot="$sysroot"
3361         ;;
3362         tms470)
3363             add_cppflags -I"$sysinclude"
3364             add_ldflags  --sysroot="$sysroot"
3365         ;;
3366     esac
3367 fi
3368
3369 if test "$cpu" = host; then
3370     enabled cross_compile &&
3371         die "--cpu=host makes no sense when cross-compiling."
3372
3373     case "$cc_type" in
3374         gcc|llvm_gcc)
3375             check_native(){
3376                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3377                 sed -n "/cc1.*$1=/{
3378                             s/.*$1=\\([^ ]*\\).*/\\1/
3379                             p
3380                             q
3381                         }" $TMPE
3382             }
3383             cpu=$(check_native -march || check_native -mcpu)
3384         ;;
3385     esac
3386
3387     test "${cpu:-host}" = host &&
3388         die "--cpu=host not supported with compiler $cc"
3389 fi
3390
3391 # Deal with common $arch aliases
3392 case "$arch" in
3393     aarch64|arm64)
3394         arch="aarch64"
3395     ;;
3396     arm*)
3397         arch="arm"
3398     ;;
3399     mips*|IP*)
3400         case "$arch" in
3401         *el)
3402             add_cppflags -EL
3403             add_ldflags -EL
3404         ;;
3405         *eb)
3406             add_cppflags -EB
3407             add_ldflags -EB
3408         ;;
3409         esac
3410         arch="mips"
3411     ;;
3412     parisc*|hppa*)
3413         arch="parisc"
3414     ;;
3415     "Power Macintosh"|ppc*|powerpc*)
3416         arch="ppc"
3417     ;;
3418     s390|s390x)
3419         arch="s390"
3420     ;;
3421     sh4|sh)
3422         arch="sh4"
3423     ;;
3424     sun4u|sparc*)
3425         arch="sparc"
3426     ;;
3427     tilegx|tile-gx)
3428         arch="tilegx"
3429     ;;
3430     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3431         arch="x86"
3432     ;;
3433 esac
3434
3435 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3436 enable $arch
3437
3438 # Add processor-specific flags
3439 if enabled aarch64; then
3440
3441     case $cpu in
3442         armv*)
3443             cpuflags="-march=$cpu"
3444         ;;
3445         *)
3446             cpuflags="-mcpu=$cpu"
3447         ;;
3448     esac
3449
3450 elif enabled alpha; then
3451
3452     cpuflags="-mcpu=$cpu"
3453
3454 elif enabled arm; then
3455
3456     check_arm_arch() {
3457         check_cpp_condition stddef.h \
3458             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3459             $cpuflags
3460     }
3461
3462     probe_arm_arch() {
3463         if   check_arm_arch 4;        then echo armv4
3464         elif check_arm_arch 4T;       then echo armv4t
3465         elif check_arm_arch 5;        then echo armv5
3466         elif check_arm_arch 5E;       then echo armv5e
3467         elif check_arm_arch 5T;       then echo armv5t
3468         elif check_arm_arch 5TE;      then echo armv5te
3469         elif check_arm_arch 5TEJ;     then echo armv5te
3470         elif check_arm_arch 6;        then echo armv6
3471         elif check_arm_arch 6J;       then echo armv6j
3472         elif check_arm_arch 6K;       then echo armv6k
3473         elif check_arm_arch 6Z;       then echo armv6z
3474         elif check_arm_arch 6ZK;      then echo armv6zk
3475         elif check_arm_arch 6T2;      then echo armv6t2
3476         elif check_arm_arch 7;        then echo armv7
3477         elif check_arm_arch 7A  7_A;  then echo armv7-a
3478         elif check_arm_arch 7S;       then echo armv7-a
3479         elif check_arm_arch 7R  7_R;  then echo armv7-r
3480         elif check_arm_arch 7M  7_M;  then echo armv7-m
3481         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3482         elif check_arm_arch 8A  8_A;  then echo armv8-a
3483         fi
3484     }
3485
3486     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3487
3488     case $cpu in
3489         armv*)
3490             cpuflags="-march=$cpu"
3491             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3492         ;;
3493         *)
3494             cpuflags="-mcpu=$cpu"
3495             case $cpu in
3496                 cortex-a*)                               subarch=armv7a  ;;
3497                 cortex-r*)                               subarch=armv7r  ;;
3498                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3499                 arm11*)                                  subarch=armv6   ;;
3500                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3501                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3502                 *)                             subarch=$(probe_arm_arch) ;;
3503             esac
3504         ;;
3505     esac
3506
3507     case "$subarch" in
3508         armv5t*)    enable fast_clz                ;;
3509         armv[6-8]*) enable fast_clz fast_unaligned ;;
3510     esac
3511
3512 elif enabled avr32; then
3513
3514     case $cpu in
3515         ap7[02]0[0-2])
3516             subarch="avr32_ap"
3517             cpuflags="-mpart=$cpu"
3518         ;;
3519         ap)
3520             subarch="avr32_ap"
3521             cpuflags="-march=$cpu"
3522         ;;
3523         uc3[ab]*)
3524             subarch="avr32_uc"
3525             cpuflags="-mcpu=$cpu"
3526         ;;
3527         uc)
3528             subarch="avr32_uc"
3529             cpuflags="-march=$cpu"
3530         ;;
3531     esac
3532
3533 elif enabled bfin; then
3534
3535     cpuflags="-mcpu=$cpu"
3536
3537 elif enabled mips; then
3538
3539     cpuflags="-march=$cpu"
3540
3541 elif enabled ppc; then
3542
3543     disable ldbrx
3544
3545     case $(tolower $cpu) in
3546         601|ppc601|powerpc601)
3547             cpuflags="-mcpu=601"
3548             disable altivec
3549         ;;
3550         603*|ppc603*|powerpc603*)
3551             cpuflags="-mcpu=603"
3552             disable altivec
3553         ;;
3554         604*|ppc604*|powerpc604*)
3555             cpuflags="-mcpu=604"
3556             disable altivec
3557         ;;
3558         g3|75*|ppc75*|powerpc75*)
3559             cpuflags="-mcpu=750"
3560             disable altivec
3561         ;;
3562         g4|745*|ppc745*|powerpc745*)
3563             cpuflags="-mcpu=7450"
3564             disable vsx
3565         ;;
3566         74*|ppc74*|powerpc74*)
3567             cpuflags="-mcpu=7400"
3568             disable vsx
3569         ;;
3570         g5|970|ppc970|powerpc970)
3571             cpuflags="-mcpu=970"
3572             disable vsx
3573         ;;
3574         power[3-6]*)
3575             cpuflags="-mcpu=$cpu"
3576             disable vsx
3577         ;;
3578         power[7-8]*)
3579             cpuflags="-mcpu=$cpu"
3580             enable ldbrx
3581         ;;
3582         cell)
3583             cpuflags="-mcpu=cell"
3584             enable ldbrx
3585             disable vsx
3586         ;;
3587         e500mc)
3588             cpuflags="-mcpu=e500mc"
3589             disable altivec
3590         ;;
3591         e500v2)
3592             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3593             disable altivec
3594             disable dcbzl
3595         ;;
3596         e500)
3597             cpuflags="-mcpu=8540 -mhard-float"
3598             disable altivec
3599             disable dcbzl
3600         ;;
3601     esac
3602
3603 elif enabled sparc; then
3604
3605     case $cpu in
3606         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3607             cpuflags="-mcpu=$cpu"
3608         ;;
3609         ultrasparc*|niagara[234])
3610             cpuflags="-mcpu=$cpu"
3611         ;;
3612     esac
3613
3614 elif enabled x86; then
3615
3616     case $cpu in
3617         i[345]86|pentium)
3618             cpuflags="-march=$cpu"
3619             disable i686
3620             disable mmx
3621         ;;
3622         # targets that do NOT support nopl and conditional mov (cmov)
3623         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3624             cpuflags="-march=$cpu"
3625             disable i686
3626         ;;
3627         # targets that do support nopl and conditional mov (cmov)
3628         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3629             cpuflags="-march=$cpu"
3630             enable i686
3631             enable fast_cmov
3632         ;;
3633         # targets that do support conditional mov but on which it's slow
3634         pentium4|pentium4m|prescott|nocona)
3635             cpuflags="-march=$cpu"
3636             enable i686
3637             disable fast_cmov
3638         ;;
3639     esac
3640
3641 fi
3642
3643 if [ "$cpu" != generic ]; then
3644     add_cflags  $cpuflags
3645     add_asflags $cpuflags
3646     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3647 fi
3648
3649 # compiler sanity check
3650 check_exec <<EOF
3651 int main(void){ return 0; }
3652 EOF
3653 if test "$?" != 0; then
3654     echo "$cc is unable to create an executable file."
3655     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3656         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3657         echo "Only do this if you know what cross compiling means."
3658     fi
3659     die "C compiler test failed."
3660 fi
3661
3662 add_cppflags -D_ISOC99_SOURCE
3663 check_cflags -std=c99
3664 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3665 #include <stdlib.h>
3666 EOF
3667 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3668 #include <stdlib.h>
3669 EOF
3670
3671 add_host_cppflags -D_ISOC99_SOURCE
3672 check_host_cflags -std=c99
3673 check_host_cflags -Wall
3674 check_host_cflags -O3
3675
3676 check_64bit(){
3677     arch32=$1
3678     arch64=$2
3679     expr=$3
3680     check_code cc "" "int test[2*($expr) - 1]" &&
3681         subarch=$arch64 || subarch=$arch32
3682 }
3683
3684 case "$arch" in
3685     aarch64|alpha|ia64)
3686         spic=$shared
3687     ;;
3688     mips)
3689         check_64bit mips mips64 '_MIPS_SIM > 1'
3690         spic=$shared
3691     ;;
3692     parisc)
3693         check_64bit parisc parisc64 'sizeof(void *) > 4'
3694         spic=$shared
3695     ;;
3696     ppc)
3697         check_64bit ppc ppc64 'sizeof(void *) > 4'
3698         spic=$shared
3699     ;;
3700     s390)
3701         check_64bit s390 s390x 'sizeof(void *) > 4'
3702         spic=$shared
3703     ;;
3704     sparc)
3705         check_64bit sparc sparc64 'sizeof(void *) > 4'
3706         spic=$shared
3707     ;;
3708     x86)
3709         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3710         if test "$subarch" = "x86_64"; then
3711             spic=$shared
3712         fi
3713     ;;
3714 esac
3715
3716 enable $subarch
3717 enabled spic && enable_weak pic
3718
3719 # OS specific
3720 case $target_os in
3721     aix)
3722         SHFLAGS=-shared
3723         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3724         enabled shared && add_ldflags -Wl,-brtl
3725         ;;
3726     android)
3727         disable symver
3728         enable section_data_rel_ro
3729         SLIB_INSTALL_NAME='$(SLIBNAME)'
3730         SLIB_INSTALL_LINKS=
3731         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3732         ;;
3733     haiku)
3734         prefix_default="/boot/common"
3735         network_extralibs="-lnetwork"
3736         host_libs=
3737         ;;
3738     sunos)
3739         SHFLAGS='-shared -Wl,-h,$$(@F)'
3740         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3741         network_extralibs="-lsocket -lnsl"
3742         # When using suncc to build, the Solaris linker will mark
3743         # an executable with each instruction set encountered by
3744         # the Solaris assembler.  As our libraries contain their own
3745         # guards for processor-specific code, instead suppress
3746         # generation of the HWCAPS ELF section on Solaris x86 only.
3747         enabled_all suncc x86 &&
3748             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3749             add_ldflags -Wl,-M,mapfile
3750         nm_default='nm -P -g'
3751         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
3752         ;;
3753     netbsd)
3754         disable symver
3755         oss_indev_extralibs="-lossaudio"
3756         oss_outdev_extralibs="-lossaudio"
3757         ;;
3758     openbsd|bitrig)
3759         disable symver
3760         SHFLAGS='-shared'
3761         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3762         SLIB_INSTALL_LINKS=
3763         oss_indev_extralibs="-lossaudio"
3764         oss_outdev_extralibs="-lossaudio"
3765         ;;
3766     dragonfly)
3767         disable symver
3768         ;;
3769     freebsd)
3770         ;;
3771     bsd/os)
3772         add_extralibs -lpoll -lgnugetopt
3773         ;;
3774     darwin)
3775         enabled ppc && add_asflags -force_cpusubtype_ALL
3776         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3777         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3778         add_ldflags -Wl,-dynamic,-search_paths_first
3779         SLIBSUF=".dylib"
3780         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3781         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3782         objformat="macho"
3783         enabled x86_64 && objformat="macho64"
3784         enabled_any pic shared ||
3785             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3786         check_header dispatch/dispatch.h &&
3787             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3788         ;;
3789     msys*)
3790         die "Native MSYS builds are discouraged, please use the MINGW environment."
3791         ;;
3792     mingw32*|mingw64*)
3793         if test $target_os = "mingw32ce"; then
3794             disable network
3795         else
3796             target_os=mingw32
3797         fi
3798         LIBTARGET=i386
3799         if enabled x86_64; then
3800             LIBTARGET="i386:x86-64"
3801         elif enabled arm; then
3802             LIBTARGET=arm-wince
3803         fi
3804         check_ldflags -Wl,--nxcompat
3805         check_ldflags -Wl,--dynamicbase
3806         shlibdir_default="$bindir_default"
3807         SLIBPREF=""
3808         SLIBSUF=".dll"
3809         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3810         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3811         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3812         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3813         SLIB_INSTALL_LINKS=
3814         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3815         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3816         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3817         objformat="win32"
3818         dlltool="${cross_prefix}dlltool"
3819         ranlib=:
3820         enable dos_paths
3821         ;;
3822     win32|win64)
3823         disable symver
3824         if enabled shared; then
3825             # Link to the import library instead of the normal static library
3826             # for shared libs.
3827             LD_LIB='%.lib'
3828             # Cannot build both shared and static libs with MSVC or icl.
3829             disable static
3830         fi
3831         shlibdir_default="$bindir_default"
3832         SLIBPREF=""
3833         SLIBSUF=".dll"
3834         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3835         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3836         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3837         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3838         SLIB_INSTALL_LINKS=
3839         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3840         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3841         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3842         objformat="win32"
3843         ranlib=:
3844         enable dos_paths
3845         ;;
3846     cygwin*)
3847         target_os=cygwin
3848         shlibdir_default="$bindir_default"
3849         SLIBPREF="cyg"
3850         SLIBSUF=".dll"
3851         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3852         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3853         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3854         SLIB_INSTALL_LINKS=
3855         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3856         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3857         objformat="win32"
3858         enable dos_paths
3859         ;;
3860     *-dos|freedos|opendos)
3861         network_extralibs="-lsocket"
3862         objformat="coff"
3863         enable dos_paths
3864         add_cppflags -U__STRICT_ANSI__
3865         ;;
3866     linux)
3867         enable dv1394
3868         enable section_data_rel_ro
3869         ;;
3870     irix*)
3871         target_os=irix
3872         ranlib="echo ignoring ranlib"
3873         ;;
3874     os/2*)
3875         ln_s="cp -f"
3876         objformat="aout"
3877         add_cppflags -D_GNU_SOURCE
3878         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3879         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3880         LIBSUF="_s.a"
3881         SLIBPREF=""
3882         SLIBSUF=".dll"
3883         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3884         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3885         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3886             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3887             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3888             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3889             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3890         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3891             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3892         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3893         enable dos_paths
3894         ;;
3895     gnu/kfreebsd)
3896         add_cppflags -D_BSD_SOURCE
3897         ;;
3898     gnu)
3899         ;;
3900     qnx)
3901         add_cppflags -D_QNX_SOURCE
3902         network_extralibs="-lsocket"
3903         ;;
3904     symbian)
3905         SLIBSUF=".dll"
3906         enable dos_paths
3907         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3908         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3909         add_ldflags -Wl,--target1-abs,--no-undefined \
3910                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3911                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3912         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3913                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3914                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3915         ;;
3916     osf1)
3917         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3918         ;;
3919     minix)
3920         ;;
3921     plan9)
3922         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3923                      -D_REENTRANT_SOURCE        \
3924                      -D_RESEARCH_SOURCE         \
3925                      -DFD_SETSIZE=96            \
3926                      -DHAVE_SOCK_OPTS
3927         add_compat strtod.o strtod=avpriv_strtod
3928         network_extralibs='-lbsd'
3929         exeobjs=compat/plan9/main.o
3930         cp_f='cp'
3931         ;;
3932     none)
3933         ;;
3934     *)
3935         die "Unknown OS '$target_os'."
3936         ;;
3937 esac
3938
3939 # determine libc flavour
3940
3941 probe_libc(){
3942     pfx=$1
3943     pfx_no_=${pfx%_}
3944     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3945     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3946         eval ${pfx}libc_type=uclibc
3947         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3948     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3949         eval ${pfx}libc_type=glibc
3950         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3951     # MinGW headers can be installed on Cygwin, so check for newlib first.
3952     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3953         eval ${pfx}libc_type=newlib
3954         add_${pfx}cppflags -U__STRICT_ANSI__
3955     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3956     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3957         eval ${pfx}libc_type=mingw64
3958         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3959         eval test \$${pfx_no_}cc_type = "gcc" &&
3960             add_${pfx}cppflags -D__printf__=__gnu_printf__
3961     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3962          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3963         eval ${pfx}libc_type=mingw32
3964         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3965             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3966             die "ERROR: MinGW32 runtime version must be >= 3.15."
3967         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3968         eval test \$${pfx_no_}cc_type = "gcc" &&
3969             add_${pfx}cppflags -D__printf__=__gnu_printf__
3970     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3971         eval ${pfx}libc_type=msvcrt
3972         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3973             if [ "$pfx" = host_ ]; then
3974                 add_host_cppflags -Dsnprintf=_snprintf
3975             else
3976                 add_compat strtod.o strtod=avpriv_strtod
3977                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3978                                              _snprintf=avpriv_snprintf  \
3979                                              vsnprintf=avpriv_vsnprintf
3980             fi
3981         fi
3982         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3983         # 0x601 by default unless something else is set by the user.
3984         # This can easily lead to us detecting functions only present
3985         # in such new versions and producing binaries requiring windows 7.0.
3986         # Therefore explicitly set the default to XP unless the user has
3987         # set something else on the command line.
3988         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
3989         # family. For these cases, configure is free to use any functions
3990         # found in the SDK headers by default. (Alternatively, we could force
3991         # _WIN32_WINNT to 0x0602 in that case.)
3992         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3993             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
3994 #ifdef WINAPI_FAMILY
3995 #include <winapifamily.h>
3996 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
3997 #error not desktop
3998 #endif
3999 #endif
4000 EOF
4001     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4002         eval ${pfx}libc_type=klibc
4003     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4004         eval ${pfx}libc_type=bionic
4005     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4006         eval ${pfx}libc_type=solaris
4007         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4008     else
4009         eval ${pfx}libc_type=default
4010         add_${pfx}cppflags -D_DEFAULT_SOURCE
4011     fi
4012 }
4013
4014 probe_libc
4015 test -n "$libc_type" && enable libc_$libc_type
4016 probe_libc host_
4017 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4018
4019 case $libc_type in
4020     bionic)
4021         add_compat strtod.o strtod=avpriv_strtod
4022         ;;
4023 esac
4024
4025 # hacks for compiler/libc/os combinations
4026
4027 if enabled_all tms470 libc_glibc; then
4028     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4029     add_cppflags -D__USER_LABEL_PREFIX__=
4030     add_cppflags -D__builtin_memset=memset
4031     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4032     add_cflags   -pds=48    # incompatible redefinition of macro
4033 fi
4034
4035 if enabled_all ccc libc_glibc; then
4036     add_ldflags -Wl,-z,now  # calls to libots crash without this
4037 fi
4038
4039 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4040     add_cppflags '-I\$(SRC_PATH)/compat/float'
4041
4042 esc(){
4043     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4044 }
4045
4046 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4047
4048 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4049
4050 set_default $PATHS_LIST
4051 set_default nm
4052
4053 # we need to build at least one lib type
4054 if ! enabled_any static shared; then
4055     cat <<EOF
4056 At least one library type must be built.
4057 Specify --enable-static to build the static libraries or --enable-shared to
4058 build the shared libraries as well. To only build the shared libraries specify
4059 --disable-static in addition to --enable-shared.
4060 EOF
4061     exit 1
4062 fi
4063
4064 die_license_disabled() {
4065     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4066 }
4067
4068 die_license_disabled gpl libcdio
4069 die_license_disabled gpl libx264
4070 die_license_disabled gpl libx265
4071 die_license_disabled gpl libxavs
4072 die_license_disabled gpl libxvid
4073 die_license_disabled gpl x11grab
4074
4075 die_license_disabled nonfree cuda
4076 die_license_disabled nonfree libfaac
4077 die_license_disabled nonfree libfdk_aac
4078 die_license_disabled nonfree libnpp
4079 die_license_disabled nonfree nvenc
4080 die_license_disabled nonfree openssl
4081
4082 die_license_disabled version3 libopencore_amrnb
4083 die_license_disabled version3 libopencore_amrwb
4084 die_license_disabled version3 libvo_aacenc
4085 die_license_disabled version3 libvo_amrwbenc
4086
4087 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4088
4089 disabled optimizations || check_cflags -fomit-frame-pointer
4090
4091 enable_weak_pic() {
4092     disabled pic && return
4093     enable pic
4094     add_cppflags -DPIC
4095     case "$target_os" in
4096     mingw*|cygwin*)
4097         ;;
4098     *)
4099         add_cflags -fPIC
4100         ;;
4101     esac
4102     add_asflags  -fPIC
4103 }
4104
4105 enabled pic && enable_weak_pic
4106
4107 check_cc <<EOF || die "Symbol mangling check failed."
4108 int ff_extern;
4109 EOF
4110 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4111 extern_prefix=${sym%%ff_extern*}
4112
4113 check_cc <<EOF && enable_weak inline_asm
4114 void foo(void) { __asm__ volatile ("" ::); }
4115 EOF
4116
4117 _restrict=
4118 for restrict_keyword in restrict __restrict__ __restrict; do
4119     check_cc <<EOF && _restrict=$restrict_keyword && break
4120 void foo(char * $restrict_keyword p);
4121 EOF
4122 done
4123
4124 check_cc <<EOF && enable pragma_deprecated
4125 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4126 EOF
4127
4128 check_cc <<EOF && enable attribute_packed
4129 struct { int x; } __attribute__((packed)) x;
4130 EOF
4131
4132 check_cc <<EOF && enable attribute_may_alias
4133 union { int x; } __attribute__((may_alias)) x;
4134 EOF
4135
4136 check_cc <<EOF || die "endian test failed"
4137 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4138 EOF
4139 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4140
4141 check_gas() {
4142     log "check_gas using '$as' as AS"
4143     # :vararg is used on aarch64, arm and ppc altivec
4144     check_as <<EOF || return 1
4145 .macro m n, y:vararg=0
4146 \n: .int \y
4147 .endm
4148 m x
4149 EOF
4150     # .altmacro is only used in arm asm
4151     ! enabled arm || check_as <<EOF || return 1
4152 .altmacro
4153 EOF
4154     enable gnu_as
4155     return 0
4156 }
4157
4158 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4159     nogas=:
4160     enabled_any arm aarch64 && nogas=die
4161     enabled_all ppc altivec && nogas=warn
4162     as_noop=-v
4163
4164     case $as_type in
4165         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4166         gcc)  gaspp_as_type=gas ;;
4167         *)    gaspp_as_type=$as_type ;;
4168     esac
4169
4170     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4171
4172     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4173         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4174
4175     if ! check_gas ; then
4176         as=${gas:=$as}
4177         check_gas || \
4178             $nogas "GNU assembler not found, install/update gas-preprocessor"
4179     fi
4180
4181     check_as <<EOF && enable as_func
4182 .func test
4183 .endfunc
4184 EOF
4185 fi
4186
4187 check_inline_asm inline_asm_labels '"1:\n"'
4188
4189 if enabled aarch64; then
4190     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4191     # internal assembler in clang 3.3 does not support this instruction
4192     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4193     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4194
4195     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4196
4197 elif enabled alpha; then
4198
4199     check_cflags -mieee
4200
4201 elif enabled arm; then
4202
4203     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4204     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4205     enabled thumb && check_cflags -mthumb || check_cflags -marm
4206
4207     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4208         enable vfp_args
4209     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4210         enable vfp_args
4211     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4212         case "${cross_prefix:-$cc}" in
4213             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4214             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4215 __asm__ (".eabi_attribute 28, 1");
4216 int main(void) { return 0; }
4217 EOF
4218         esac
4219         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4220     fi
4221
4222     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4223     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4224     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4225     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4226     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4227     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4228
4229     [ $target_os = linux ] || [ $target_os = android ] ||
4230         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4231             $ARCH_EXT_LIST_ARM
4232
4233     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4234
4235     check_as <<EOF && enable as_dn_directive
4236 ra .dn d0.i16
4237 .unreq ra
4238 EOF
4239
4240     # llvm's integrated assembler supports .object_arch from llvm 3.5
4241     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4242 .object_arch armv4
4243 EOF
4244
4245     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4246
4247 elif enabled mips; then
4248
4249     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4250
4251     # make sure that only an instruction set is enabled
4252     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4253
4254     if enabled mips64; then
4255         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4256             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4257                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4258     else
4259         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4260             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4261                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4262     fi
4263
4264 elif enabled parisc; then
4265
4266     if enabled gcc; then
4267         case $($cc -dumpversion) in
4268             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4269         esac
4270     fi
4271
4272 elif enabled ppc; then
4273
4274     enable local_aligned_8 local_aligned_16
4275
4276     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4277     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4278     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4279     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4280
4281     # AltiVec flags: The FSF version of GCC differs from the Apple version
4282     if enabled altivec; then
4283         check_cflags -maltivec -mabi=altivec &&
4284         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4285         check_cflags -faltivec
4286
4287         # check if our compiler supports Motorola AltiVec C API
4288         check_cc <<EOF || disable altivec
4289 $inc_altivec_h
4290 int main(void) {
4291     vector signed int v1 = (vector signed int) { 0 };
4292     vector signed int v2 = (vector signed int) { 1 };
4293     v1 = vec_add(v1, v2);
4294     return 0;
4295 }
4296 EOF
4297
4298         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4299     fi
4300
4301     if enabled vsx; then
4302         check_cflags -mvsx &&
4303         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4304     fi
4305
4306     if enabled power8; then
4307         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4308     fi
4309
4310 elif enabled x86; then
4311
4312     check_builtin rdtsc    intrin.h   "__rdtsc()"
4313     check_builtin mm_empty mmintrin.h "_mm_empty()"
4314
4315     enable local_aligned_8 local_aligned_16
4316
4317     # check whether EBP is available on x86
4318     # As 'i' is stored on the stack, this program will crash
4319     # if the base pointer is used to access it because the
4320     # base pointer is cleared in the inline assembly code.
4321     check_exec_crash <<EOF && enable ebp_available
4322 volatile int i=0;
4323 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4324 return i;
4325 EOF
4326
4327     # check whether EBX is available on x86
4328     check_inline_asm ebx_available '""::"b"(0)' &&
4329         check_inline_asm ebx_available '"":::"%ebx"'
4330
4331     # check whether xmm clobbers are supported
4332     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4333
4334     # check whether binutils is new enough to compile SSSE3/MMXEXT
4335     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4336     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4337
4338     if ! disabled_any asm mmx yasm; then
4339         if check_cmd $yasmexe --version; then
4340             enabled x86_64 && yasm_extra="-m amd64"
4341             yasm_debug="-g dwarf2"
4342         elif check_cmd nasm -v; then
4343             yasmexe=nasm
4344             yasm_debug="-g -F dwarf"
4345             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4346         fi
4347
4348         YASMFLAGS="-f $objformat $yasm_extra"
4349         enabled pic               && append YASMFLAGS "-DPIC"
4350         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4351         case "$objformat" in
4352             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4353         esac
4354
4355         check_yasm "movbe ecx, [5]" && enable yasm ||
4356             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4357         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4358         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4359         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4360         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4361         check_yasm "CPU amdnop" || disable cpunop
4362     fi
4363
4364     case "$cpu" in
4365         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4366             disable fast_clz
4367         ;;
4368     esac
4369
4370 fi
4371
4372 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4373
4374 check_ldflags -Wl,--as-needed
4375
4376 if check_func dlopen; then
4377     ldl=
4378 elif check_func dlopen -ldl; then
4379     ldl=-ldl
4380 fi
4381
4382 if ! disabled network; then
4383     check_func getaddrinfo $network_extralibs
4384     check_func inet_aton $network_extralibs
4385
4386     check_type netdb.h "struct addrinfo"
4387     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4388     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4389     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4390     check_type poll.h "struct pollfd"
4391     check_type netinet/sctp.h "struct sctp_event_subscribe"
4392     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4393     check_type netinet/in.h "struct sockaddr_in6"
4394     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4395     check_type "sys/types.h sys/socket.h" socklen_t
4396
4397     # Prefer arpa/inet.h over winsock2
4398     if check_header arpa/inet.h ; then
4399         check_func closesocket
4400     elif check_header winsock2.h ; then
4401         check_func_headers winsock2.h closesocket -lws2 &&
4402             network_extralibs="-lws2" ||
4403         { check_func_headers winsock2.h closesocket -lws2_32 &&
4404             network_extralibs="-lws2_32"; } || disable winsock2_h network
4405         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4406
4407         check_type ws2tcpip.h socklen_t
4408         check_type ws2tcpip.h "struct addrinfo"
4409         check_type ws2tcpip.h "struct group_source_req"
4410         check_type ws2tcpip.h "struct ip_mreq_source"
4411         check_type ws2tcpip.h "struct ipv6_mreq"
4412         check_type winsock2.h "struct pollfd"
4413         check_struct winsock2.h "struct sockaddr" sa_len
4414         check_type ws2tcpip.h "struct sockaddr_in6"
4415         check_type ws2tcpip.h "struct sockaddr_storage"
4416     else
4417         disable network
4418     fi
4419 fi
4420
4421 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4422 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4423 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4424 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4425
4426 case "$custom_allocator" in
4427     jemalloc)
4428         # jemalloc by default does not use a prefix
4429         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4430     ;;
4431     tcmalloc)
4432         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4433         malloc_prefix=tc_
4434     ;;
4435 esac
4436
4437 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4438 check_func  ${malloc_prefix}memalign            && enable memalign
4439 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4440
4441 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4442     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4443
4444 check_func  fcntl
4445 check_func  fork
4446 check_func  gethrtime
4447 check_func  getopt
4448 check_func  getrusage
4449 check_func  gettimeofday
4450 check_func  gmtime_r
4451 check_func  isatty
4452 check_func  localtime_r
4453 check_func  mach_absolute_time
4454 check_func  mkstemp
4455 check_func  mmap
4456 check_func  mprotect
4457 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4458 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4459 check_func  sched_getaffinity
4460 check_func  setrlimit
4461 check_func  strerror_r
4462 check_func  sysconf
4463 check_func  sysctl
4464 check_func  usleep
4465
4466 check_func_headers io.h setmode
4467 check_func_headers stdlib.h getenv
4468
4469 check_func_headers windows.h CoTaskMemFree -lole32
4470 check_func_headers windows.h GetProcessAffinityMask
4471 check_func_headers windows.h GetProcessTimes
4472 check_func_headers windows.h GetSystemTimeAsFileTime
4473 check_func_headers windows.h LoadLibrary
4474 check_func_headers windows.h MapViewOfFile
4475 check_func_headers windows.h SetConsoleTextAttribute
4476 check_func_headers windows.h Sleep
4477 check_func_headers windows.h VirtualAlloc
4478 check_struct windows.h "CONDITION_VARIABLE" Ptr
4479
4480 check_header direct.h
4481 check_header dlfcn.h
4482 check_header d3d11.h
4483 check_header dxva.h
4484 check_header dxva2api.h
4485 check_header io.h
4486 check_header mach/mach_time.h
4487 check_header malloc.h
4488 check_header poll.h
4489 check_header sys/mman.h
4490 check_header sys/param.h
4491 check_header sys/resource.h
4492 check_header sys/select.h
4493 check_header sys/time.h
4494 check_header sys/un.h
4495 check_header unistd.h
4496 check_header valgrind/valgrind.h
4497 check_header vdpau/vdpau.h
4498 check_header vdpau/vdpau_x11.h
4499 check_header VideoDecodeAcceleration/VDADecoder.h
4500 check_header windows.h
4501 check_header X11/extensions/XvMClib.h
4502
4503 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4504 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4505 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4506
4507 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4508
4509 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4510 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4511 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4512
4513 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4514 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4515 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4516 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4517
4518 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4519
4520 if ! disabled w32threads && ! enabled pthreads; then
4521     check_func_headers "windows.h process.h" _beginthreadex &&
4522         enable w32threads || disable w32threads
4523 fi
4524
4525 # check for some common methods of building with pthread support
4526 # do this before the optional library checks as some of them require pthreads
4527 if ! disabled pthreads && ! enabled w32threads; then
4528     enable pthreads
4529     if check_func pthread_join -pthread; then
4530         add_cflags -pthread
4531         add_extralibs -pthread
4532     elif check_func pthread_join -pthreads; then
4533         add_cflags -pthreads
4534         add_extralibs -pthreads
4535     elif check_func pthread_join -lpthreadGC2; then
4536         add_extralibs -lpthreadGC2
4537     elif check_lib pthread.h pthread_join -lpthread; then
4538         :
4539     elif ! check_func pthread_join; then
4540         disable pthreads
4541     fi
4542 fi
4543
4544 enabled pthreads &&
4545     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4546
4547 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4548 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4549
4550 check_lib math.h sin -lm && LIBM="-lm"
4551 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4552
4553 atan2f_args=2
4554 ldexpf_args=2
4555 powf_args=2
4556
4557 for func in $MATH_FUNCS; do
4558     eval check_mathfunc $func \${${func}_args:-1}
4559 done
4560
4561 # these are off by default, so fail if requested and not available
4562 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4563                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4564                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4565 enabled cuda              && check_lib cuda.h cuInit -lcuda
4566 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4567 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4568 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4569 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4570 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4571 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4572 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4573 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4574 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4575                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4576                                done || die "ERROR: libgsm not found"; }
4577 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4578 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4579 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4580 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4581 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4582 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4583 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4584 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4585 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4586 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4587                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4588 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4589 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4590 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4591 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4592 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4593 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4594 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4595 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4596 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4597 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4598 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4599 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4600     enabled libvpx_vp8_decoder && {
4601         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4602             disable libvpx_vp8_decoder;
4603     }
4604     enabled libvpx_vp8_encoder && {
4605         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4606             disable libvpx_vp8_encoder;
4607     }
4608     enabled libvpx_vp9_decoder && {
4609         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4610             disable libvpx_vp9_decoder;
4611     }
4612     enabled libvpx_vp9_encoder && {
4613         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4614             disable libvpx_vp9_encoder;
4615     }
4616     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4617         die "libvpx enabled but no supported decoders found"
4618     fi
4619 }
4620 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4621 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4622 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4623                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4624                                die "ERROR: libx264 version must be >= 0.118."; } &&
4625                              { check_cpp_condition x264.h "X264_MPEG2" &&
4626                                enable libx262; }
4627 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4628                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4629                                die "ERROR: libx265 version must be >= 57."; }
4630 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4631 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4632 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4633                                 { ! enabled cross_compile && {
4634                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4635                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4636                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4637                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4638                                die "ERROR: mmal not found"; }
4639 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
4640 enabled omx_rpi && enable omx
4641 enabled omx               && { check_header OMX_Core.h ||
4642                                 { ! enabled cross_compile && enabled omx_rpi && {
4643                                     add_cflags -isystem/opt/vc/include/IL ; }
4644                                 check_header OMX_Core.h ; } ||
4645                                die "ERROR: OpenMAX IL headers not found"; }
4646 enabled openssl           && { check_pkg_config openssl openssl/ssl.h SSL_library_init && {
4647                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4648                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4649                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4650                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4651                                die "ERROR: openssl not found"; }
4652
4653 if enabled gnutls; then
4654     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4655     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4656 fi
4657
4658 # libdc1394 check
4659 if enabled libdc1394; then
4660     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4661         enable libdc1394_2; } ||
4662     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4663         enable libdc1394_1; } ||
4664     die "ERROR: No version of libdc1394 found "
4665 fi
4666
4667 if enabled nvenc; then
4668     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4669     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4670         die "ERROR: NVENC API version 5 or older is not supported"
4671 fi
4672
4673 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4674     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4675     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4676     enable sdl
4677 fi
4678
4679 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4680 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4681
4682 check_header linux/fb.h
4683 check_header linux/videodev2.h
4684 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4685
4686 check_header AVFoundation/AVFoundation.h &&
4687     check_objcflags -fobjc-arc &&
4688     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4689     disable AVFoundation_AVFoundation_h
4690
4691 check_header sys/videoio.h
4692
4693 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4694 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4695 # w32api 3.12 had it defined wrong
4696 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4697
4698 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4699 { check_header dev/bktr/ioctl_meteor.h &&
4700   check_header dev/bktr/ioctl_bt848.h; } ||
4701 { check_header machine/ioctl_meteor.h &&
4702   check_header machine/ioctl_bt848.h; } ||
4703 { check_header dev/video/meteor/ioctl_meteor.h &&
4704   check_header dev/video/bktr/ioctl_bt848.h; } ||
4705 check_header dev/ic/bt8xx.h
4706
4707 check_header sndio.h
4708 check_header sys/soundcard.h
4709 check_header soundcard.h
4710
4711 enabled_any alsa_indev alsa_outdev &&
4712     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4713
4714 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4715     check_func jack_port_get_latency_range -ljack
4716
4717 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4718
4719 if enabled libcdio; then
4720     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4721     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4722     die "ERROR: No usable libcdio/cdparanoia found"
4723 fi
4724
4725 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4726
4727 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
4728     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4729         enabled libxcb && die "ERROR: libxcb not found";
4730     } && disable x11grab && enable libxcb
4731
4732     disabled libxcb_shm ||
4733         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4734             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4735         } && check_header sys/shm.h && enable libxcb_shm
4736
4737     disabled libxcb_xfixes ||
4738         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4739             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4740         } && enable libxcb_xfixes
4741
4742     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4743     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4744 fi
4745
4746 if enabled x11grab; then
4747     enabled xlib || die "ERROR: Xlib not found"
4748     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
4749     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4750 fi
4751
4752 enabled vaapi &&
4753     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4754     disable vaapi
4755
4756 if enabled vaapi ; then
4757     enabled xlib &&
4758     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4759     enable vaapi_x11
4760
4761     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4762     enable vaapi_drm
4763 fi
4764
4765 enabled vdpau &&
4766     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4767     disable vdpau
4768
4769 enabled vdpau && enabled xlib &&
4770     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4771     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4772     enable vdpau_x11
4773
4774 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4775
4776 # add some useful compiler flags if supported
4777 check_cflags -Wdeclaration-after-statement
4778 check_cflags -Wall
4779 check_cflags -Wdisabled-optimization
4780 check_cflags -Wpointer-arith
4781 check_cflags -Wredundant-decls
4782 check_cflags -Wwrite-strings
4783 check_cflags -Wtype-limits
4784 check_cflags -Wundef
4785 check_cflags -Wmissing-prototypes
4786 check_cflags -Wstrict-prototypes
4787 enabled extra_warnings && check_cflags -Winline
4788 enabled extra_warnings && check_cflags -Wcast-qual
4789
4790 check_disable_warning(){
4791     warning_flag=-W${1#-Wno-}
4792     test_cflags $warning_flag && add_cflags $1
4793 }
4794
4795 check_disable_warning -Wno-parentheses
4796 check_disable_warning -Wno-switch
4797 check_disable_warning -Wno-format-zero-length
4798 check_disable_warning -Wno-pointer-sign
4799
4800 # add some linker flags
4801 check_ldflags -Wl,--warn-common
4802 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4803 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4804 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4805
4806 # add some strip flags
4807 # -wN '..@*' is more selective than -x, but not available everywhere.
4808 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4809
4810 enabled neon_clobber_test &&
4811     check_ldflags -Wl,--wrap,avcodec_open2              \
4812                   -Wl,--wrap,avcodec_decode_audio4      \
4813                   -Wl,--wrap,avcodec_decode_video2      \
4814                   -Wl,--wrap,avcodec_decode_subtitle2   \
4815                   -Wl,--wrap,avcodec_encode_audio2      \
4816                   -Wl,--wrap,avcodec_encode_video2      \
4817                   -Wl,--wrap,avcodec_encode_subtitle    \
4818                   -Wl,--wrap,avresample_convert ||
4819     disable neon_clobber_test
4820
4821 enabled xmm_clobber_test &&
4822     check_ldflags -Wl,--wrap,avcodec_open2              \
4823                   -Wl,--wrap,avcodec_decode_audio4      \
4824                   -Wl,--wrap,avcodec_decode_video2      \
4825                   -Wl,--wrap,avcodec_decode_subtitle2   \
4826                   -Wl,--wrap,avcodec_encode_audio2      \
4827                   -Wl,--wrap,avcodec_encode_video2      \
4828                   -Wl,--wrap,avcodec_encode_subtitle    \
4829                   -Wl,--wrap,avresample_convert         \
4830                   -Wl,--wrap,sws_scale ||
4831     disable xmm_clobber_test
4832
4833 echo "X { local: *; };" > $TMPV
4834 if test_ldflags -Wl,--version-script,$TMPV; then
4835     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4836 elif test_ldflags -Wl,-M,$TMPV; then
4837     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
4838 fi
4839
4840 check_cc <<EOF && enable symver_asm_label
4841 void ff_foo(void) __asm__ ("av_foo@VERSION");
4842 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4843 EOF
4844     check_cc <<EOF && enable symver_gnu_asm
4845 __asm__(".symver ff_foo,av_foo@VERSION");
4846 void ff_foo(void) {}
4847 EOF
4848
4849 if [ -z "$optflags" ]; then
4850     if enabled small; then
4851         optflags=$cflags_size
4852     elif enabled optimizations; then
4853         optflags=$cflags_speed
4854     else
4855         optflags=$cflags_noopt
4856     fi
4857 fi
4858
4859 check_optflags(){
4860     check_cflags "$@"
4861     enabled lto && check_ldflags "$@"
4862 }
4863
4864
4865 if enabled lto; then
4866     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4867     check_cflags  -flto
4868     check_ldflags -flto $cpuflags
4869 fi
4870
4871 check_optflags $optflags
4872 check_optflags -fno-math-errno
4873 check_optflags -fno-signed-zeros
4874
4875 if enabled icc; then
4876     # Just warnings, no remarks
4877     check_cflags -w1
4878     # -wd: Disable following warnings
4879     # 144, 167, 556: -Wno-pointer-sign
4880     # 1292: attribute "foo" ignored
4881     # 1419: external declaration in primary source file
4882     # 10006: ignoring unknown option -fno-signed-zeros
4883     # 10148: ignoring unknown option -Wno-parentheses
4884     # 10156: ignoring option '-W'; no argument required
4885     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4886     # 11030: Warning unknown option --as-needed
4887     # 10156: ignoring option '-export'; no argument required
4888     check_ldflags -wd10156,11030
4889     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4890     enable ebp_available
4891     if enabled x86_32; then
4892         icc_version=$($cc -dumpversion)
4893         test ${icc_version%%.*} -ge 11 &&
4894             check_cflags -falign-stack=maintain-16-byte ||
4895             disable aligned_stack
4896     fi
4897 elif enabled ccc; then
4898     # disable some annoying warnings
4899     add_cflags -msg_disable bitnotint
4900     add_cflags -msg_disable mixfuncvoid
4901     add_cflags -msg_disable nonstandcast
4902     add_cflags -msg_disable unsupieee
4903 elif enabled gcc; then
4904     check_optflags -fno-tree-vectorize
4905     check_cflags -Werror=implicit-function-declaration
4906     check_cflags -Werror=missing-prototypes
4907     check_cflags -Werror=return-type
4908     check_cflags -Werror=declaration-after-statement
4909     check_cflags -Werror=vla
4910     check_cflags -Werror=format-security
4911     check_cflags -fdiagnostics-color=auto
4912     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4913 elif enabled llvm_gcc; then
4914     check_cflags -mllvm -stack-alignment=16
4915 elif enabled clang; then
4916     check_cflags -mllvm -stack-alignment=16
4917     check_cflags -Qunused-arguments
4918     check_cflags -Werror=implicit-function-declaration
4919     check_cflags -Werror=missing-prototypes
4920     check_cflags -Werror=return-type
4921 elif enabled cparser; then
4922     add_cflags -Wno-missing-variable-declarations
4923     add_cflags -Wno-empty-statement
4924 elif enabled armcc; then
4925     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4926     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4927     # 2523: use of inline assembly is deprecated
4928     add_cflags -W${armcc_opt},--diag_suppress=2523
4929     add_cflags -W${armcc_opt},--diag_suppress=1207
4930     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4931     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4932     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4933     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4934 elif enabled tms470; then
4935     add_cflags -pds=824 -pds=837
4936     disable inline_asm
4937 elif enabled pathscale; then
4938     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4939 elif enabled_any msvc icl; then
4940     enabled x86_32 && disable aligned_stack
4941     enabled_all x86_32 debug && add_cflags -Oy-
4942     enabled debug && add_ldflags -debug
4943     enable pragma_deprecated
4944     if enabled icl; then
4945         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4946         # (correctly) on icl 13.x.
4947         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4948             add_cflags -Qansi-alias
4949         # icl will pass the inline asm tests but inline asm is currently
4950         # not supported (build will fail)
4951         disable inline_asm
4952     fi
4953     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
4954     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
4955     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
4956     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
4957     # (as it ends up if the restrict redefine is done before including stdlib.h), while
4958     # MSVC 2013 and newer can handle it fine.
4959     # If this declspec fails, force including stdlib.h before the restrict redefinition
4960     # happens in config.h.
4961     if [ $_restrict != restrict ]; then
4962         check_cc <<EOF || add_cflags -FIstdlib.h
4963 __declspec($_restrict) void* foo(int);
4964 EOF
4965     fi
4966     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4967 fi
4968
4969 for pfx in "" host_; do
4970     varname=${pfx%_}cc_type
4971     eval "type=\$$varname"
4972     if [ $type = "msvc" ]; then
4973         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
4974 static inline int foo(int a) { return a; }
4975 EOF
4976     fi
4977 done
4978
4979 case $as_type in
4980     clang)
4981         add_asflags -Qunused-arguments
4982     ;;
4983 esac
4984
4985 case $ld_type in
4986     clang)
4987         check_ldflags -Qunused-arguments
4988     ;;
4989 esac
4990
4991 case $target_os in
4992     osf1)
4993         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4994     ;;
4995     plan9)
4996         add_cppflags -Dmain=plan9_main
4997     ;;
4998 esac
4999
5000 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5001
5002 check_deps $CONFIG_LIST       \
5003            $CONFIG_EXTRA      \
5004            $HAVE_LIST         \
5005            $ALL_COMPONENTS    \
5006
5007 enabled_all dxva2 CoTaskMemFree &&
5008     prepend avconv_libs $($ldflags_filter "-lole32") &&
5009     enable dxva2_lib
5010
5011 ! enabled_any memalign posix_memalign aligned_malloc &&
5012     enabled simd_align_16 && enable memalign_hack
5013
5014 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5015
5016 for thread in $THREADS_LIST; do
5017     if enabled $thread; then
5018         test -n "$thread_type" &&
5019             die "ERROR: Only one thread type must be selected." ||
5020             thread_type="$thread"
5021     fi
5022 done
5023
5024 enabled zlib && add_cppflags -DZLIB_CONST
5025
5026 # conditional library dependencies, in linking order
5027 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5028 enabled resample_filter && prepend avfilter_deps "avresample"
5029 enabled scale_filter    && prepend avfilter_deps "swscale"
5030
5031 enabled opus_decoder    && prepend avcodec_deps "avresample"
5032
5033 expand_deps(){
5034     lib_deps=${1}_deps
5035     eval "deps=\$$lib_deps"
5036     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5037     unique $lib_deps
5038 }
5039
5040 map 'expand_deps $v' $LIBRARY_LIST
5041
5042 echo "install prefix            $prefix"
5043 echo "source path               $source_path"
5044 echo "C compiler                $cc"
5045 echo "C library                 $libc_type"
5046 if test "$host_cc" != "$cc"; then
5047     echo "host C compiler           $host_cc"
5048     echo "host C library            $host_libc_type"
5049 fi
5050 echo "ARCH                      $arch ($cpu)"
5051 if test "$build_suffix" != ""; then
5052     echo "build suffix              $build_suffix"
5053 fi
5054 if test "$extra_version" != ""; then
5055     echo "version string suffix     $extra_version"
5056 fi
5057 echo "big-endian                ${bigendian-no}"
5058 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5059 if enabled x86; then
5060     echo "${yasmexe}                      ${yasm-no}"
5061     echo "MMX enabled               ${mmx-no}"
5062     echo "MMXEXT enabled            ${mmxext-no}"
5063     echo "3DNow! enabled            ${amd3dnow-no}"
5064     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5065     echo "SSE enabled               ${sse-no}"
5066     echo "SSSE3 enabled             ${ssse3-no}"
5067     echo "AVX enabled               ${avx-no}"
5068     echo "XOP enabled               ${xop-no}"
5069     echo "FMA3 enabled              ${fma3-no}"
5070     echo "FMA4 enabled              ${fma4-no}"
5071     echo "i686 features enabled     ${i686-no}"
5072     echo "CMOV is fast              ${fast_cmov-no}"
5073     echo "EBX available             ${ebx_available-no}"
5074     echo "EBP available             ${ebp_available-no}"
5075 fi
5076 if enabled aarch64; then
5077     echo "NEON enabled              ${neon-no}"
5078     echo "VFP enabled               ${vfp-no}"
5079 fi
5080 if enabled arm; then
5081     echo "ARMv5TE enabled           ${armv5te-no}"
5082     echo "ARMv6 enabled             ${armv6-no}"
5083     echo "ARMv6T2 enabled           ${armv6t2-no}"
5084     echo "VFP enabled               ${vfp-no}"
5085     echo "NEON enabled              ${neon-no}"
5086 fi
5087 if enabled ppc; then
5088     echo "AltiVec enabled           ${altivec-no}"
5089     echo "VSX enabled               ${vsx-no}"
5090     echo "POWER8 enabled            ${power8-no}"
5091     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5092     echo "dcbzl available           ${dcbzl-no}"
5093 fi
5094 echo "debug symbols             ${debug-no}"
5095 echo "optimize for size         ${small-no}"
5096 echo "optimizations             ${optimizations-no}"
5097 echo "static                    ${static-no}"
5098 echo "shared                    ${shared-no}"
5099 echo "new filter support        ${avfilter-no}"
5100 echo "network support           ${network-no}"
5101 echo "threading support         ${thread_type-no}"
5102 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5103 echo "SDL support               ${sdl-no}"
5104 test -n "$random_seed" &&
5105     echo "random seed               ${random_seed}"
5106 echo
5107
5108 echo "External libraries:"
5109 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5110 echo
5111 echo "External libraries providing hardware acceleration:"
5112 print_enabled '' $HWACCEL_LIBRARY_LIST | print_3_columns
5113 echo
5114
5115 echo "Libraries:"
5116 print_enabled '' $LIBRARY_LIST | print_3_columns
5117 echo
5118
5119 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5120     echo "Enabled ${type}s:"
5121     eval list=\$$(toupper $type)_LIST
5122     print_enabled '_*' $list | print_3_columns
5123     echo
5124 done
5125
5126 license="LGPL version 2.1 or later"
5127 if enabled nonfree; then
5128     license="nonfree and unredistributable"
5129 elif enabled gplv3; then
5130     license="GPL version 3 or later"
5131 elif enabled lgplv3; then
5132     license="LGPL version 3 or later"
5133 elif enabled gpl; then
5134     license="GPL version 2 or later"
5135 fi
5136
5137 echo "License: $license"
5138
5139 echo "Creating config.mak and config.h..."
5140
5141 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5142
5143 config_files="$TMPH config.mak"
5144
5145 cat > config.mak <<EOF
5146 # Automatically generated by configure - do not modify!
5147 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
5148 prefix=$prefix
5149 LIBDIR=\$(DESTDIR)$libdir
5150 SHLIBDIR=\$(DESTDIR)$shlibdir
5151 INCDIR=\$(DESTDIR)$incdir
5152 BINDIR=\$(DESTDIR)$bindir
5153 DATADIR=\$(DESTDIR)$datadir
5154 DOCDIR=\$(DESTDIR)$docdir
5155 MANDIR=\$(DESTDIR)$mandir
5156 SRC_PATH=$source_path
5157 CC_IDENT=$cc_ident
5158 ARCH=$arch
5159 INTRINSICS=$intrinsics
5160 CC=$cc
5161 OBJCC=$cc
5162 AS=$as
5163 OBJCC=$objcc
5164 LD=$ld
5165 DEPCC=$dep_cc
5166 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5167 DEPAS=$as
5168 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5169 YASM=$yasmexe
5170 DEPYASM=$yasmexe
5171 AR=$ar
5172 ARFLAGS=$arflags
5173 AR_O=$ar_o
5174 RANLIB=$ranlib
5175 STRIP=$strip
5176 LN_S=$ln_s
5177 CPPFLAGS=$CPPFLAGS
5178 CFLAGS=$CFLAGS
5179 OBJCFLAGS=$OBJCFLAGS
5180 ASFLAGS=$ASFLAGS
5181 AS_C=$AS_C
5182 AS_O=$AS_O
5183 OBJCC_C=$OBJCC_C
5184 OBJCC_E=$OBJCC_E
5185 OBJCC_O=$OBJCC_O
5186 CC_C=$CC_C
5187 CC_E=$CC_E
5188 CC_O=$CC_O
5189 LD_O=$LD_O
5190 LD_LIB=$LD_LIB
5191 LD_PATH=$LD_PATH
5192 DLLTOOL=$dlltool
5193 LDFLAGS=$LDFLAGS
5194 LDEXEFLAGS=$LDEXEFLAGS
5195 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5196 STRIPFLAGS=$STRIPFLAGS
5197 YASMFLAGS=$YASMFLAGS
5198 BUILDSUF=$build_suffix
5199 FULLNAME=$FULLNAME
5200 LIBPREF=$LIBPREF
5201 LIBSUF=$LIBSUF
5202 LIBNAME=$LIBNAME
5203 SLIBPREF=$SLIBPREF
5204 SLIBSUF=$SLIBSUF
5205 EXESUF=$EXESUF
5206 EXTRA_VERSION=$extra_version
5207 CCDEP=$CCDEP
5208 CCDEP_FLAGS=$CCDEP_FLAGS
5209 ASDEP=$ASDEP
5210 ASDEP_FLAGS=$ASDEP_FLAGS
5211 CC_DEPFLAGS=$CC_DEPFLAGS
5212 AS_DEPFLAGS=$AS_DEPFLAGS
5213 HOSTCC=$host_cc
5214 HOSTLD=$host_ld
5215 HOSTCFLAGS=$host_cflags
5216 HOSTCPPFLAGS=$host_cppflags
5217 HOSTEXESUF=$HOSTEXESUF
5218 HOSTLDFLAGS=$host_ldflags
5219 HOSTLIBS=$host_libs
5220 DEPHOSTCC=$host_cc
5221 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5222 HOSTCCDEP=$HOSTCCDEP
5223 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5224 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5225 HOSTCC_C=$HOSTCC_C
5226 HOSTCC_O=$HOSTCC_O
5227 HOSTLD_O=$HOSTLD_O
5228 TARGET_EXEC=$target_exec $target_exec_args
5229 TARGET_PATH=$target_path
5230 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5231 CFLAGS-avplay=$sdl_cflags
5232 ZLIB=$($ldflags_filter -lz)
5233 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5234 EXTRALIBS=$extralibs
5235 COMPAT_OBJS=$compat_objs
5236 EXEOBJS=$exeobjs
5237 INSTALL=install
5238 LIBTARGET=${LIBTARGET}
5239 SLIBNAME=${SLIBNAME}
5240 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5241 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5242 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5243 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5244 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5245 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5246 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5247 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5248 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
5249 EOF
5250
5251 get_version(){
5252     lcname=lib${1}
5253     name=$(toupper $lcname)
5254     file=$source_path/$lcname/version.h
5255     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5256     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5257     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5258     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5259     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5260 }
5261
5262 map 'get_version $v' $LIBRARY_LIST
5263
5264 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5265
5266 print_program_libs(){
5267     eval "program_libs=\$${1}_libs"
5268     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5269 }
5270
5271 map 'print_program_libs $v' $PROGRAM_LIST
5272
5273 cat > $TMPH <<EOF
5274 /* Automatically generated by configure - do not modify! */
5275 #ifndef LIBAV_CONFIG_H
5276 #define LIBAV_CONFIG_H
5277 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
5278 #define LIBAV_LICENSE "$(c_escape $license)"
5279 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5280 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5281 #define restrict $_restrict
5282 #define EXTERN_PREFIX "${extern_prefix}"
5283 #define EXTERN_ASM ${extern_prefix}
5284 #define SLIBSUF "$SLIBSUF"
5285 EOF
5286
5287 test -n "$malloc_prefix" &&
5288     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5289
5290 if enabled yasm; then
5291     append config_files $TMPASM
5292     printf '' >$TMPASM
5293 fi
5294
5295 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5296
5297 print_config ARCH_   "$config_files" $ARCH_LIST
5298 print_config HAVE_   "$config_files" $HAVE_LIST
5299 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5300                                      $CONFIG_EXTRA      \
5301                                      $ALL_COMPONENTS    \
5302
5303 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
5304
5305 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5306 cp_if_changed $TMPH config.h
5307 touch .config
5308
5309 enabled yasm && cp_if_changed $TMPASM config.asm
5310
5311 cat > $TMPH <<EOF
5312 /* Generated by ffconf */
5313 #ifndef AVUTIL_AVCONFIG_H
5314 #define AVUTIL_AVCONFIG_H
5315 EOF
5316
5317 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5318
5319 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5320
5321 cp_if_changed $TMPH libavutil/avconfig.h
5322
5323 test -n "$WARNINGS" && printf "\n$WARNINGS"
5324
5325 # generate the lists of enabled components
5326 print_enabled_components(){
5327     file=$1
5328     struct_name=$2
5329     name=$3
5330     shift 3
5331     echo "static const $struct_name *$name[] = {" > $TMPH
5332     for c in $*; do
5333         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
5334     done
5335     echo "    NULL };" >> $TMPH
5336     cp_if_changed $TMPH $file
5337 }
5338
5339 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
5340 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
5341
5342 # build pkg-config files
5343
5344 lib_version(){
5345     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
5346 }
5347
5348 pkgconfig_generate(){
5349     name=$1
5350     shortname=${name#lib}${build_suffix}
5351     comment=$2
5352     version=$3
5353     libs=$4
5354     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5355     requires=${requires%, }
5356     enabled ${name#lib} || return 0
5357     mkdir -p $name
5358     cat <<EOF > $name/$name.pc
5359 prefix=$prefix
5360 exec_prefix=\${prefix}
5361 libdir=$libdir
5362 includedir=$incdir
5363
5364 Name: $name
5365 Description: $comment
5366 Version: $version
5367 Requires: $(enabled shared || echo $requires)
5368 Requires.private: $(enabled shared && echo $requires)
5369 Conflicts:
5370 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
5371 Libs.private: $(enabled shared && echo $libs)
5372 Cflags: -I\${includedir}
5373 EOF
5374     cat <<EOF > $name/$name-uninstalled.pc
5375 prefix=
5376 exec_prefix=
5377 libdir=\${pcfiledir}
5378 includedir=${source_path}
5379
5380 Name: $name
5381 Description: $comment
5382 Version: $version
5383 Requires: $requires
5384 Conflicts:
5385 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
5386 Cflags: -I\${includedir}
5387 EOF
5388 }
5389
5390 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
5391 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
5392 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
5393 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
5394 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
5395 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$LIBM"
5396 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"