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:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [config.log]
  81   --disable-logging        do not log configure debug information
  82   --prefix=PREFIX          install in PREFIX [$prefix_default]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
  91
  92 Licensing options:
  93   --enable-gpl             allow use of GPL code, the resulting libs
  94                            and binaries will be under GPL [no]
  95   --enable-version3        upgrade (L)GPL to version 3 [no]
  96   --enable-nonfree         allow use of nonfree code, the resulting libs
  97                            and binaries will be unredistributable [no]
  98
  99 Configuration options:
 100   --disable-static         do not build static libraries [no]
 101   --enable-shared          build shared libraries [no]
 102   --enable-small           optimize for size instead of speed
 103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
 104   --enable-gray            enable full grayscale support (slower color)
 105   --disable-swscale-alpha  disable alpha channel support in swscale
 106   --disable-all            disable building components, libraries and programs
 107
 108 Program options:
 109   --disable-programs       do not build command line programs
 110   --disable-avconv         disable avconv build
 111   --disable-avplay         disable avplay build
 112   --disable-avprobe        disable avprobe build
 113   --disable-avserver       deprecated, does nothing
 114
 115 Component options:
 116   --disable-doc            do not build documentation
 117   --disable-pod2man        do not build manual pages
 118   --disable-texi2html      do not build HTML documentation
 119   --disable-avdevice       disable libavdevice build
 120   --disable-avcodec        disable libavcodec build
 121   --disable-avformat       disable libavformat build
 122   --disable-avutil         disable libavutil build
 123   --disable-swscale        disable libswscale build
 124   --disable-avfilter       disable video filter support [no]
 125   --disable-avresample     disable libavresample build [no]
 126   --disable-pthreads       disable pthreads [auto]
 127   --disable-w32threads     disable Win32 threads [auto]
 128   --disable-network        disable network support [no]
 129   --disable-dct            disable DCT code
 130   --disable-error-resilience disable error resilience code
 131   --disable-lsp            disable LSP code
 132   --disable-lzo            disable LZO decoder code
 133   --disable-mdct           disable MDCT code
 134   --disable-rdft           disable RDFT code
 135   --disable-fft            disable FFT code
 136   --disable-faan           disable floating point AAN (I)DCT code
 137
 138 Individual component options:
 139   --disable-everything     disable all components listed below
 140   --disable-encoder=NAME   disable encoder NAME
 141   --enable-encoder=NAME    enable encoder NAME
 142   --disable-encoders       disable all encoders
 143   --disable-decoder=NAME   disable decoder NAME
 144   --enable-decoder=NAME    enable decoder NAME
 145   --disable-decoders       disable all decoders
 146   --disable-hwaccel=NAME   disable hwaccel NAME
 147   --enable-hwaccel=NAME    enable hwaccel NAME
 148   --disable-hwaccels       disable all hwaccels
 149   --disable-muxer=NAME     disable muxer NAME
 150   --enable-muxer=NAME      enable muxer NAME
 151   --disable-muxers         disable all muxers
 152   --disable-demuxer=NAME   disable demuxer NAME
 153   --enable-demuxer=NAME    enable demuxer NAME
 154   --disable-demuxers       disable all demuxers
 155   --enable-parser=NAME     enable parser NAME
 156   --disable-parser=NAME    disable parser NAME
 157   --disable-parsers        disable all parsers
 158   --enable-bsf=NAME        enable bitstream filter NAME
 159   --disable-bsf=NAME       disable bitstream filter NAME
 160   --disable-bsfs           disable all bitstream filters
 161   --enable-protocol=NAME   enable protocol NAME
 162   --disable-protocol=NAME  disable protocol NAME
 163   --disable-protocols      disable all protocols
 164   --enable-indev=NAME      enable input device NAME
 165   --disable-indev=NAME     disable input device NAME
 166   --disable-indevs         disable input devices
 167   --enable-outdev=NAME     enable output device NAME
 168   --disable-outdev=NAME    disable output device NAME
 169   --disable-outdevs        disable output devices
 170   --disable-devices        disable all devices
 171   --enable-filter=NAME     enable filter NAME
 172   --disable-filter=NAME    disable filter NAME
 173   --disable-filters        disable all filters
 174
 175 External library support:
 176
 177   Using any of the following switches will allow Libav to link to the
 178   corresponding external library. All the components depending on that library
 179   will become enabled, if all their other dependencies are met and they are not
 180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 181   libwavpack and allow the libwavpack encoder to be built, unless it is
 182   specifically disabled with --disable-encoder=libwavpack.
 183
 184   Note that only the system libraries are auto-detected. All the other external
 185   libraries must be explicitly enabled.
 186
 187   Also note that the following help text describes the purpose of the libraries
 188   themselves, not all their features will necessarily be usable by Libav.
 189
 190   --enable-avisynth          video frameserver
 191   --enable-bzlib             bzip2 compression [autodetect]
 192   --enable-frei0r            video filtering plugins
 193   --enable-gnutls            crypto
 194   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
 195   --enable-libcdio           audio CD input
 196   --enable-libdc1394         IEEE 1394/Firewire camera input
 197   --enable-libdcadec         DCA audio decoding
 198   --enable-libfaac           AAC audio encoding
 199   --enable-libfdk-aac        AAC audio encoding/decoding
 200   --enable-libfontconfig     font configuration and management
 201   --enable-libfreetype       font rendering
 202   --enable-libgsm            GSM audio encoding/decoding
 203   --enable-libhdcd           HDCD decoding filter
 204   --enable-libilbc           ILBC audio encoding/decoding
 205   --enable-libkvazaar        HEVC video encoding
 206   --enable-libmp3lame        MP3 audio encoding
 207   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
 208   --enable-libopencore-amrwb AMR-WB audio decoding
 209   --enable-libopencv         computer vision
 210   --enable-libopenh264       H.264 video encoding/decoding
 211   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
 212   --enable-libopus           Opus audio encoding/decoding
 213   --enable-libpulse          Pulseaudio sound server
 214   --enable-librtmp           RTMP streaming
 215   --enable-libschroedinger   Dirac video encoding/decoding
 216   --enable-libsnappy         snappy compression
 217   --enable-libspeex          Speex audio encoding/decoding
 218   --enable-libtheora         Theora video encoding/decoding
 219   --enable-libtwolame        MP2 audio encoding
 220   --enable-libvo-aacenc      AAC audio encoding
 221   --enable-libvo-amrwbenc    AMR-WB audio encoding
 222   --enable-libvorbis         Vorbis audio encoding/decoding
 223   --enable-libvpx            VP* video encoding/decoding
 224   --enable-libwavpack        Wavpack audio encoding/decoding
 225   --enable-libwebp           WebP image encoding/decoding
 226   --enable-libx264           H.264 video encoding
 227   --enable-libx265           HEVC video encoding
 228   --enable-libxavs           Chinese AVS video encoding
 229   --enable-libxcb            X window system protocol communication
 230   --enable-libxcb-shm        X11 shm communication [auto]
 231   --enable-libxcb-xfixes     X11 mouse rendering [auto]
 232   --enable-libxvid           MPEG-4 ASP video encoding
 233   --enable-openssl           crypto
 234   --enable-zlib              compression [autodetect]
 235
 236   The following libraries provide various hardware acceleration features:
 237   --enable-cuda    Nvidia CUDA (dynamically linked)
 238   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
 239   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
 240   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
 241   --enable-libnpp  Nvidia CUDA processing
 242   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
 243   --enable-nvenc   Nvidia video encoding
 244   --enable-omx     OpenMAX IL
 245   --enable-omx-rpi OpenMAX IL for Raspberry Pi
 246   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
 247   --enable-vda     Apple Video Decode Acceleration [auto]
 248   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
 249
 250 Toolchain options:
 251   --arch=ARCH              select architecture [$arch]
 252   --cpu=CPU                select the minimum required CPU (affects
 253                            instruction selection, may crash on older CPUs)
 254   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 255   --enable-cross-compile   assume a cross-compiler is used
 256   --sysroot=PATH           root of cross-build tree
 257   --sysinclude=PATH        location of cross-build system headers
 258   --target-os=OS           compiler targets OS [$target_os]
 259   --target-exec=CMD        command to run executables on target
 260   --target-path=DIR        path to view of build directory on target
 261   --target-samples=DIR     path to samples directory on target
 262   --toolchain=NAME         set tool defaults according to NAME
 263   --nm=NM                  use nm tool
 264   --ar=AR                  use archive tool AR [$ar_default]
 265   --as=AS                  use assembler AS [$as_default]
 266   --cc=CC                  use C compiler CC [$cc_default]
 267   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 268   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 269   --ld=LD                  use linker LD
 270   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 271   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 272   --host-cc=HOSTCC         use host C compiler HOSTCC
 273   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 274   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 275   --host-ld=HOSTLD         use host linker HOSTLD
 276   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 277   --host-libs=HLIBS        use libs HLIBS when linking for host
 278   --host-os=OS             compiler host OS [$target_os]
 279   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 280   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 281   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 282   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 283   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 284   --extra-version=STRING   version string suffix []
 285   --optflags=OPTFLAGS      override optimization-related compiler flags
 286   --build-suffix=SUFFIX    library name suffix []
 287   --enable-pic             build position-independent code
 288   --enable-thumb           compile for Thumb instruction set
 289   --enable-lto             use link-time optimization
 290   --env="ENV=override"     override the environment variables
 291
 292 Advanced options (experts only):
 293   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 294   --custom-allocator=NAME  use a supported custom allocator
 295   --disable-symver         disable symbol versioning
 296   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 297   --disable-safe-bitstream-reader
 298                            disable buffer boundary checking in bitreaders
 299                            (faster, but may crash)
 300   --enable-sram            allow use of on-chip SRAM
 301
 302 Optimization options (experts only):
 303   --disable-asm            disable all assembly optimizations
 304   --disable-altivec        disable AltiVec optimizations
 305   --disable-vsx            disable VSX optimizations
 306   --disable-power8         disable POWER8 optimizations
 307   --disable-amd3dnow       disable 3DNow! optimizations
 308   --disable-amd3dnowext    disable 3DNow! extended optimizations
 309   --disable-mmx            disable MMX optimizations
 310   --disable-mmxext         disable MMXEXT optimizations
 311   --disable-sse            disable SSE optimizations
 312   --disable-sse2           disable SSE2 optimizations
 313   --disable-sse3           disable SSE3 optimizations
 314   --disable-ssse3          disable SSSE3 optimizations
 315   --disable-sse4           disable SSE4 optimizations
 316   --disable-sse42          disable SSE4.2 optimizations
 317   --disable-avx            disable AVX optimizations
 318   --disable-xop            disable XOP optimizations
 319   --disable-fma3           disable FMA3 optimizations
 320   --disable-fma4           disable FMA4 optimizations
 321   --disable-avx2           disable AVX2 optimizations
 322   --disable-armv5te        disable armv5te optimizations
 323   --disable-armv6          disable armv6 optimizations
 324   --disable-armv6t2        disable armv6t2 optimizations
 325   --disable-vfp            disable VFP optimizations
 326   --disable-neon           disable NEON optimizations
 327   --disable-inline-asm     disable use of inline assembly
 328   --disable-yasm           disable use of nasm/yasm assembly
 329
 330 Developer options (useful when working on Libav itself):
 331   --disable-debug          disable debugging symbols
 332   --enable-debug=LEVEL     set the debug level [$debuglevel]
 333   --disable-optimizations  disable compiler optimizations
 334   --enable-extra-warnings  enable more compiler warnings
 335   --samples=PATH           location of test samples for FATE, if not set use
 336                            \$LIBAV_SAMPLES at make invocation time.
 337   --enable-neon-clobber-test check NEON registers for clobbering (should be
 338                            used only for debugging purposes)
 339   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 340                            should be used only for debugging purposes)
 341   --enable-random          randomly enable/disable components
 342   --disable-random
 343   --enable-random=LIST     randomly enable/disable specific components or
 344   --disable-random=LIST    component groups. LIST is a comma-separated list
 345                            of NAME[:PROB] entries where NAME is a component
 346                            (group) and PROB the probability associated with
 347                            NAME (default 0.5).
 348   --random-seed=VALUE      seed value for --enable/disable-random
 349   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 350                            (only applies to --disable-optimizations builds)
 351
 352 NOTE: Object files are built at the place where configure is launched.
 353 EOF
 354   exit 0
 355 }
 356
 357 quotes='""'
 358
 359 log(){
 360     echo "$@" >> $logfile
 361 }
 362
 363 log_file(){
 364     log BEGIN $1
 365     i=1
 366     while read line; do
 367         printf '%5s   %s\n' "${i}" "${line}"
 368         i=$(($i+1))
 369     done < $1 >> $logfile
 370     log END $1
 371 }
 372
 373 echolog(){
 374     log "$@"
 375     echo "$@"
 376 }
 377
 378 warn(){
 379     log "WARNING: $*"
 380     WARNINGS="${WARNINGS}WARNING: $*\n"
 381 }
 382
 383 die(){
 384     echolog "$@"
 385     cat <<EOF
 386
 387 If you think configure made a mistake, make sure you are using the latest
 388 version from Git.  If the latest version fails, report the problem to the
 389 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 390 EOF
 391     if disabled logging; then
 392         cat <<EOF
 393 Rerun configure with logging enabled (do not use --disable-logging), and
 394 include the log this produces with your report.
 395 EOF
 396     else
 397         cat <<EOF
 398 Include the log file "$logfile" produced by configure as this will help
 399 solving the problem.
 400 EOF
 401     fi
 402     exit 1
 403 }
 404
 405 # Avoid locale weirdness, besides we really just want to translate ASCII.
 406 toupper(){
 407     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 408 }
 409
 410 tolower(){
 411     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 412 }
 413
 414 c_escape(){
 415     echo "$*" | sed 's/["\\]/\\\0/g'
 416 }
 417
 418 sh_quote(){
 419     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 420     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 421     echo "$v"
 422 }
 423
 424 cleanws(){
 425     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 426 }
 427
 428 filter(){
 429     pat=$1
 430     shift
 431     for v; do
 432         eval "case $v in $pat) echo $v ;; esac"
 433     done
 434 }
 435
 436 filter_out(){
 437     pat=$1
 438     shift
 439     for v; do
 440         eval "case $v in $pat) ;; *) echo $v ;; esac"
 441     done
 442 }
 443
 444 map(){
 445     m=$1
 446     shift
 447     for v; do eval $m; done
 448 }
 449
 450 add_suffix(){
 451     suffix=$1
 452     shift
 453     for v; do echo ${v}${suffix}; done
 454 }
 455
 456 set_all(){
 457     value=$1
 458     shift
 459     for var in $*; do
 460         eval $var=$value
 461     done
 462 }
 463
 464 set_weak(){
 465     value=$1
 466     shift
 467     for var; do
 468         eval : \${$var:=$value}
 469     done
 470 }
 471
 472 sanitize_var_name(){
 473     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 474 }
 475
 476 set_safe(){
 477     var=$1
 478     shift
 479     eval $(sanitize_var_name "$var")='$*'
 480 }
 481
 482 get_safe(){
 483     eval echo \$$(sanitize_var_name "$1")
 484 }
 485
 486 pushvar(){
 487     for pvar in $*; do
 488         eval level=\${${pvar}_level:=0}
 489         eval ${pvar}_${level}="\$$pvar"
 490         eval ${pvar}_level=$(($level+1))
 491     done
 492 }
 493
 494 popvar(){
 495     for pvar in $*; do
 496         eval level=\${${pvar}_level:-0}
 497         test $level = 0 && continue
 498         eval level=$(($level-1))
 499         eval $pvar="\${${pvar}_${level}}"
 500         eval ${pvar}_level=$level
 501         eval unset ${pvar}_${level}
 502     done
 503 }
 504
 505 enable(){
 506     set_all yes $*
 507 }
 508
 509 disable(){
 510     set_all no $*
 511 }
 512
 513 enable_weak(){
 514     set_weak yes $*
 515 }
 516
 517 disable_weak(){
 518     set_weak no $*
 519 }
 520
 521 enable_safe(){
 522     for var; do
 523         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 524     done
 525 }
 526
 527 disable_safe(){
 528     for var; do
 529         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 530     done
 531 }
 532
 533 do_enable_deep(){
 534     for var; do
 535         enabled $var && continue
 536         eval sel="\$${var}_select"
 537         eval sgs="\$${var}_suggest"
 538         pushvar var sgs
 539         enable_deep $sel
 540         popvar sgs
 541         enable_deep_weak $sgs
 542         popvar var
 543     done
 544 }
 545
 546 enable_deep(){
 547     do_enable_deep $*
 548     enable $*
 549 }
 550
 551 enable_deep_weak(){
 552     for var; do
 553         disabled $var && continue
 554         pushvar var
 555         do_enable_deep $var
 556         popvar var
 557         enable_weak $var
 558     done
 559 }
 560
 561 enabled(){
 562     test "${1#!}" = "$1" && op== || op=!=
 563     eval test "x\$${1#!}" $op "xyes"
 564 }
 565
 566 disabled(){
 567     test "${1#!}" = "$1" && op== || op=!=
 568     eval test "x\$${1#!}" $op "xno"
 569 }
 570
 571 enabled_all(){
 572     for opt; do
 573         enabled $opt || return 1
 574     done
 575 }
 576
 577 disabled_all(){
 578     for opt; do
 579         disabled $opt || return 1
 580     done
 581 }
 582
 583 enabled_any(){
 584     for opt; do
 585         enabled $opt && return 0
 586     done
 587 }
 588
 589 disabled_any(){
 590     for opt; do
 591         disabled $opt && return 0
 592     done
 593     return 1
 594 }
 595
 596 set_default(){
 597     for opt; do
 598         eval : \${$opt:=\$${opt}_default}
 599     done
 600 }
 601
 602 is_in(){
 603     value=$1
 604     shift
 605     for var in $*; do
 606         [ $var = $value ] && return 0
 607     done
 608     return 1
 609 }
 610
 611 do_check_deps(){
 612     for cfg; do
 613         cfg="${cfg#!}"
 614         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 615         disabled ${cfg}_checking && continue
 616         enable ${cfg}_checking
 617         append allopts $cfg
 618
 619         eval dep_all="\$${cfg}_deps"
 620         eval dep_any="\$${cfg}_deps_any"
 621         eval dep_sel="\$${cfg}_select"
 622         eval dep_sgs="\$${cfg}_suggest"
 623         eval dep_ifa="\$${cfg}_if"
 624         eval dep_ifn="\$${cfg}_if_any"
 625
 626         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 627         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 628         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 629
 630         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 631         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 632         enabled_all  $dep_all || disable $cfg
 633         enabled_any  $dep_any || disable $cfg
 634         disabled_any $dep_sel && disable $cfg
 635
 636         if enabled $cfg; then
 637             enable_deep $dep_sel
 638             enable_deep_weak $dep_sgs
 639         fi
 640
 641         disable ${cfg}_checking
 642     done
 643 }
 644
 645 check_deps(){
 646     unset allopts
 647
 648     do_check_deps "$@"
 649
 650     for cfg in $allopts; do
 651         enabled $cfg || continue
 652         eval dep_extralibs="\$${cfg}_extralibs"
 653         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 654     done
 655 }
 656
 657 print_config(){
 658     pfx=$1
 659     files=$2
 660     shift 2
 661     map 'eval echo "$v \${$v:-no}"' "$@" |
 662     awk "BEGIN { split(\"$files\", files) }
 663         {
 664             c = \"$pfx\" toupper(\$1);
 665             v = \$2;
 666             sub(/yes/, 1, v);
 667             sub(/no/,  0, v);
 668             for (f in files) {
 669                 file = files[f];
 670                 if (file ~ /\\.h\$/) {
 671                     printf(\"#define %s %d\\n\", c, v) >>file;
 672                 } else if (file ~ /\\.asm\$/) {
 673                     printf(\"%%define %s %d\\n\", c, v) >>file;
 674                 } else if (file ~ /\\.mak\$/) {
 675                     n = -v ? \"\" : \"!\";
 676                     printf(\"%s%s=yes\\n\", n, c) >>file;
 677                 }
 678             }
 679         }"
 680 }
 681
 682 print_enabled(){
 683     suf=$1
 684     shift
 685     for v; do
 686         enabled $v && printf "%s\n" ${v%$suf}
 687     done
 688 }
 689
 690 append(){
 691     var=$1
 692     shift
 693     eval "$var=\"\$$var $*\""
 694 }
 695
 696 prepend(){
 697     var=$1
 698     shift
 699     eval "$var=\"$* \$$var\""
 700 }
 701
 702 unique(){
 703     var=$1
 704     uniq_list=""
 705     for tok in $(eval echo \$$var); do
 706         uniq_list="$(filter_out $tok $uniq_list) $tok"
 707     done
 708     eval "$var=\"${uniq_list}\""
 709 }
 710
 711 add_cppflags(){
 712     append CPPFLAGS "$@"
 713 }
 714
 715 add_cflags(){
 716     append CFLAGS $($cflags_filter "$@")
 717 }
 718
 719 add_asflags(){
 720     append ASFLAGS $($asflags_filter "$@")
 721 }
 722
 723 add_objcflags(){
 724     append OBJCFLAGS $($objcflags_filter "$@")
 725 }
 726
 727 add_ldflags(){
 728     append LDFLAGS $($ldflags_filter "$@")
 729 }
 730
 731 add_ldexeflags(){
 732     append LDEXEFLAGS $($ldflags_filter "$@")
 733 }
 734
 735 add_stripflags(){
 736     append STRIPFLAGS "$@"
 737 }
 738
 739 add_extralibs(){
 740     prepend extralibs $($ldflags_filter "$@")
 741 }
 742
 743 add_host_cppflags(){
 744     append host_cppflags "$@"
 745 }
 746
 747 add_host_cflags(){
 748     append host_cflags $($host_cflags_filter "$@")
 749 }
 750
 751 add_host_ldflags(){
 752     append host_ldflags $($host_ldflags_filter "$@")
 753 }
 754
 755 add_compat(){
 756     append compat_objs $1
 757     shift
 758     map 'add_cppflags -D$v' "$@"
 759 }
 760
 761 check_cmd(){
 762     log "$@"
 763     "$@" >> $logfile 2>&1
 764 }
 765
 766 cc_o(){
 767     eval printf '%s\\n' $CC_O
 768 }
 769
 770 cc_e(){
 771     eval printf '%s\\n' $CC_E
 772 }
 773
 774 check_cc(){
 775     log check_cc "$@"
 776     cat > $TMPC
 777     log_file $TMPC
 778     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 779 }
 780
 781 check_objcc(){
 782     log check_objcc "$@"
 783     cat > $TMPC
 784     log_file $TMPC
 785     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
 786 }
 787
 788 check_cpp(){
 789     log check_cpp "$@"
 790     cat > $TMPC
 791     log_file $TMPC
 792     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 793 }
 794
 795 as_o(){
 796     eval printf '%s\\n' $AS_O
 797 }
 798
 799 check_as(){
 800     log check_as "$@"
 801     cat > $TMPS
 802     log_file $TMPS
 803     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 804 }
 805
 806 check_inline_asm(){
 807     log check_inline_asm "$@"
 808     name="$1"
 809     code="$2"
 810     shift 2
 811     disable $name
 812     check_cc "$@" <<EOF && enable $name
 813 void foo(void){ __asm__ volatile($code); }
 814 EOF
 815 }
 816
 817 check_insn(){
 818     log check_insn "$@"
 819     check_inline_asm ${1}_inline "\"$2\""
 820     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 821 }
 822
 823 check_yasm(){
 824     log check_yasm "$@"
 825     echo "$1" > $TMPS
 826     log_file $TMPS
 827     shift 1
 828     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
 829 }
 830
 831 ld_o(){
 832     eval printf '%s\\n' $LD_O
 833 }
 834
 835 check_ld(){
 836     log check_ld "$@"
 837     flags=$(filter_out '-l*' "$@")
 838     libs=$(filter '-l*' "$@")
 839     check_cc $($cflags_filter $flags) || return
 840     flags=$($ldflags_filter $flags)
 841     libs=$($ldflags_filter $libs)
 842     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 843 }
 844
 845 print_include(){
 846     hdr=$1
 847     test "${hdr%.h}" = "${hdr}" &&
 848         echo "#include $hdr"    ||
 849         echo "#include <$hdr>"
 850 }
 851
 852 check_code(){
 853     log check_code "$@"
 854     check=$1
 855     headers=$2
 856     code=$3
 857     shift 3
 858     {
 859         for hdr in $headers; do
 860             print_include $hdr
 861         done
 862         echo "int main(void) { $code; return 0; }"
 863     } | check_$check "$@"
 864 }
 865
 866 check_cppflags(){
 867     log check_cppflags "$@"
 868     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
 869 int x;
 870 EOF
 871 }
 872
 873 test_cflags(){
 874     log test_cflags "$@"
 875     set -- $($cflags_filter "$@")
 876     check_cc "$@" <<EOF
 877 int x;
 878 EOF
 879 }
 880
 881 check_cflags(){
 882     log check_cflags "$@"
 883     test_cflags "$@" && add_cflags "$@"
 884 }
 885
 886 test_objcflags(){
 887     log test_objcflags "$@"
 888     set -- $($objcflags_filter "$@")
 889     check_objcc "$@" <<EOF
 890 int x;
 891 EOF
 892 }
 893
 894 check_objcflags(){
 895     log check_objcflags "$@"
 896     test_objcflags "$@" && add_objcflags "$@"
 897 }
 898
 899 test_ldflags(){
 900     log test_ldflags "$@"
 901     check_ld "$@" <<EOF
 902 int main(void){ return 0; }
 903 EOF
 904 }
 905
 906 check_ldflags(){
 907     log check_ldflags "$@"
 908     test_ldflags "$@" && add_ldflags "$@"
 909 }
 910
 911 test_stripflags(){
 912     log test_stripflags "$@"
 913     # call check_cc to get a fresh TMPO
 914     check_cc <<EOF
 915 int main(void) { return 0; }
 916 EOF
 917     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 918 }
 919
 920 check_stripflags(){
 921     log check_stripflags "$@"
 922     test_stripflags "$@" && add_stripflags "$@"
 923 }
 924
 925 check_header(){
 926     log check_header "$@"
 927     header=$1
 928     shift
 929     disable_safe $header
 930     check_cpp "$@" <<EOF && enable_safe $header
 931 #include <$header>
 932 int x;
 933 EOF
 934 }
 935
 936 check_func(){
 937     log check_func "$@"
 938     func=$1
 939     shift
 940     disable $func
 941     check_ld "$@" <<EOF && enable $func
 942 extern int $func();
 943 int main(void){ $func(); }
 944 EOF
 945 }
 946
 947 check_mathfunc(){
 948     log check_mathfunc "$@"
 949     func=$1
 950     narg=$2
 951     shift 2
 952     test $narg = 2 && args="f, g" || args="f"
 953     disable $func
 954     check_ld "$@" <<EOF && enable $func
 955 #include <math.h>
 956 float foo(float f, float g) { return $func($args); }
 957 int main(void){ return 0; }
 958 EOF
 959 }
 960
 961 check_func_headers(){
 962     log check_func_headers "$@"
 963     headers=$1
 964     funcs=$2
 965     shift 2
 966     {
 967         for hdr in $headers; do
 968             print_include $hdr
 969         done
 970         for func in $funcs; do
 971             echo "long check_$func(void) { return (long) $func; }"
 972         done
 973         echo "int main(void) { return 0; }"
 974     } | check_ld "$@" && enable $funcs && enable_safe $headers
 975 }
 976
 977 check_cpp_condition(){
 978     log check_cpp_condition "$@"
 979     header=$1
 980     condition=$2
 981     shift 2
 982     check_cpp "$@" <<EOF
 983 #include <$header>
 984 #if !($condition)
 985 #error "unsatisfied condition: $condition"
 986 #endif
 987 EOF
 988 }
 989
 990 test_cflags_cpp(){
 991     log test_cflags_cpp "$@"
 992     flags=$1
 993     condition=$2
 994     shift 2
 995     set -- $($cflags_filter "$flags")
 996     check_cpp "$@" <<EOF
 997 #if !($condition)
 998 #error "unsatisfied condition: $condition"
 999 #endif
1000 EOF
1001 }
1002
1003 check_lib(){
1004     log check_lib "$@"
1005     headers="$1"
1006     funcs="$2"
1007     shift 2
1008     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1009 }
1010
1011 check_pkg_config(){
1012     log check_pkg_config "$@"
1013     pkg="$1"
1014     headers="$2"
1015     funcs="$3"
1016     shift 3
1017     check_cmd $pkg_config --exists --print-errors $pkg || return
1018     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1019     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1020     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1021         set_safe "${pkg}_cflags" $pkg_cflags   &&
1022         set_safe "${pkg}_libs"   $pkg_libs
1023 }
1024
1025 check_exec(){
1026     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1027 }
1028
1029 check_exec_crash(){
1030     log check_exec_crash "$@"
1031     code=$(cat)
1032
1033     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1034     # are safe but may not be available everywhere.  Thus we use
1035     # raise(SIGTERM) instead.  The check is run in a subshell so we
1036     # can redirect the "Terminated" message from the shell.  SIGBUS
1037     # is not defined by standard C so it is used conditionally.
1038
1039     (check_exec "$@") >> $logfile 2>&1 <<EOF
1040 #include <signal.h>
1041 static void sighandler(int sig){
1042     raise(SIGTERM);
1043 }
1044 int foo(void){
1045     $code
1046 }
1047 int (*func_ptr)(void) = foo;
1048 int main(void){
1049     signal(SIGILL, sighandler);
1050     signal(SIGFPE, sighandler);
1051     signal(SIGSEGV, sighandler);
1052 #ifdef SIGBUS
1053     signal(SIGBUS, sighandler);
1054 #endif
1055     return func_ptr();
1056 }
1057 EOF
1058 }
1059
1060 check_type(){
1061     log check_type "$@"
1062     headers=$1
1063     type=$2
1064     shift 2
1065     disable_safe "$type"
1066     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1067 }
1068
1069 check_struct(){
1070     log check_struct "$@"
1071     headers=$1
1072     struct=$2
1073     member=$3
1074     shift 3
1075     disable_safe "${struct}_${member}"
1076     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1077         enable_safe "${struct}_${member}"
1078 }
1079
1080 check_builtin(){
1081     log check_builtin "$@"
1082     name=$1
1083     headers=$2
1084     builtin=$3
1085     shift 3
1086     disable "$name"
1087     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1088 }
1089
1090 check_compile_assert(){
1091     log check_compile_assert "$@"
1092     name=$1
1093     headers=$2
1094     condition=$3
1095     shift 3
1096     disable "$name"
1097     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1098 }
1099
1100 require(){
1101     log require "$@"
1102     name="$1"
1103     headers="$2"
1104     func="$3"
1105     shift 3
1106     check_lib "$headers" $func "$@" || die "ERROR: $name not found"
1107 }
1108
1109 require_pkg_config(){
1110     log require_pkg_config "$@"
1111     pkg="$1"
1112     check_pkg_config "$@" || die "ERROR: $pkg not found"
1113     add_cflags    $(get_safe "${pkg}_cflags")
1114     add_extralibs $(get_safe "${pkg}_libs")
1115 }
1116
1117 hostcc_e(){
1118     eval printf '%s\\n' $HOSTCC_E
1119 }
1120
1121 hostcc_o(){
1122     eval printf '%s\\n' $HOSTCC_O
1123 }
1124
1125 check_host_cc(){
1126     log check_host_cc "$@"
1127     cat > $TMPC
1128     log_file $TMPC
1129     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1130 }
1131
1132 check_host_cpp(){
1133     log check_host_cpp "$@"
1134     cat > $TMPC
1135     log_file $TMPC
1136     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1137 }
1138
1139 check_host_cppflags(){
1140     log check_host_cppflags "$@"
1141     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1142 int x;
1143 EOF
1144 }
1145
1146 check_host_cflags(){
1147     log check_host_cflags "$@"
1148     set -- $($host_cflags_filter "$@")
1149     check_host_cc "$@" <<EOF && append host_cflags "$@"
1150 int x;
1151 EOF
1152 }
1153
1154 check_host_cpp_condition(){
1155     log check_host_cpp_condition "$@"
1156     header=$1
1157     condition=$2
1158     shift 2
1159     check_host_cpp "$@" <<EOF
1160 #include <$header>
1161 #if !($condition)
1162 #error "unsatisfied condition: $condition"
1163 #endif
1164 EOF
1165 }
1166
1167 apply(){
1168     file=$1
1169     shift
1170     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1171 }
1172
1173 cp_if_changed(){
1174     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1175     mkdir -p "$(dirname $2)"
1176     $cp_f "$1" "$2"
1177 }
1178
1179 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1180 # system-dependent things.
1181
1182 AVCODEC_COMPONENTS="
1183     bsfs
1184     decoders
1185     encoders
1186     hwaccels
1187     parsers
1188 "
1189
1190 AVDEVICE_COMPONENTS="
1191     indevs
1192     outdevs
1193 "
1194 AVFILTER_COMPONENTS="
1195     filters
1196 "
1197 AVFORMAT_COMPONENTS="
1198     demuxers
1199     muxers
1200     protocols
1201 "
1202
1203 AVRESAMPLE_COMPONENTS=""
1204 AVUTIL_COMPONENTS=""
1205
1206 COMPONENT_LIST="
1207     $AVCODEC_COMPONENTS
1208     $AVDEVICE_COMPONENTS
1209     $AVFILTER_COMPONENTS
1210     $AVFORMAT_COMPONENTS
1211     $AVRESAMPLE_COMPONENTS
1212     $AVUTIL_COMPONENTS
1213 "
1214
1215 EXAMPLE_LIST="
1216     decode_audio_example
1217     decode_video_example
1218     encode_audio_example
1219     encode_video_example
1220     filter_audio_example
1221     metadata_example
1222     output_example
1223     qsvdec_example
1224     transcode_aac_example
1225 "
1226
1227 HWACCEL_LIBRARY_NONFREE_LIST="
1228     cuda
1229     libnpp
1230 "
1231 HWACCEL_LIBRARY_LIST="
1232     $HWACCEL_LIBRARY_NONFREE_LIST
1233     d3d11va
1234     dxva2
1235     libmfx
1236     mmal
1237     nvenc
1238     omx
1239     vaapi
1240     vda
1241     vdpau
1242 "
1243
1244 EXTERNAL_LIBRARY_GPL_LIST="
1245     libcdio
1246     libx264
1247     libx265
1248     libxavs
1249     libxvid
1250 "
1251
1252 EXTERNAL_LIBRARY_NONFREE_LIST="
1253     libfaac
1254     libfdk_aac
1255     openssl
1256 "
1257
1258 EXTERNAL_LIBRARY_VERSION3_LIST="
1259     libopencore_amrnb
1260     libopencore_amrwb
1261     libvo_aacenc
1262     libvo_amrwbenc
1263 "
1264
1265 EXTERNAL_LIBRARY_LIST="
1266     $EXTERNAL_LIBRARY_GPL_LIST
1267     $EXTERNAL_LIBRARY_NONFREE_LIST
1268     $EXTERNAL_LIBRARY_VERSION3_LIST
1269     avisynth
1270     bzlib
1271     frei0r
1272     gnutls
1273     libbs2b
1274     libdc1394
1275     libdcadec
1276     libfontconfig
1277     libfreetype
1278     libgsm
1279     libhdcd
1280     libilbc
1281     libkvazaar
1282     libmp3lame
1283     libopencv
1284     libopenh264
1285     libopenjpeg
1286     libopus
1287     libpulse
1288     librtmp
1289     libschroedinger
1290     libsnappy
1291     libspeex
1292     libtheora
1293     libtwolame
1294     libvorbis
1295     libvpx
1296     libwavpack
1297     libwebp
1298     libxcb
1299     libxcb_shm
1300     libxcb_xfixes
1301     zlib
1302 "
1303
1304 FEATURE_LIST="
1305     gray
1306     hardcoded_tables
1307     omx_rpi
1308     runtime_cpudetect
1309     safe_bitstream_reader
1310     shared
1311     small
1312     sram
1313     static
1314     swscale_alpha
1315 "
1316
1317 LIBRARY_LIST="
1318     avcodec
1319     avdevice
1320     avfilter
1321     avformat
1322     avresample
1323     avutil
1324     swscale
1325 "
1326
1327 LICENSE_LIST="
1328     gpl
1329     nonfree
1330     version3
1331 "
1332
1333 PROGRAM_LIST="
1334     avconv
1335     avplay
1336     avprobe
1337 "
1338
1339 SUBSYSTEM_LIST="
1340     dct
1341     doc
1342     error_resilience
1343     faan
1344     fft
1345     lsp
1346     lzo
1347     mdct
1348     network
1349     rdft
1350 "
1351
1352 CONFIG_LIST="
1353     $COMPONENT_LIST
1354     $EXAMPLE_LIST
1355     $EXTERNAL_LIBRARY_LIST
1356     $HWACCEL_LIBRARY_LIST
1357     $FEATURE_LIST
1358     $LICENSE_LIST
1359     $LIBRARY_LIST
1360     $PROGRAM_LIST
1361     $SUBSYSTEM_LIST
1362     neon_clobber_test
1363     pic
1364     pod2man
1365     texi2html
1366     thumb
1367     valgrind_backtrace
1368     xmm_clobber_test
1369 "
1370
1371 THREADS_LIST="
1372     pthreads
1373     w32threads
1374 "
1375
1376 ATOMICS_LIST="
1377     atomics_gcc
1378     atomics_suncc
1379     atomics_win32
1380 "
1381
1382 ARCH_LIST="
1383     aarch64
1384     alpha
1385     arm
1386     avr32
1387     avr32_ap
1388     avr32_uc
1389     bfin
1390     ia64
1391     m68k
1392     mips
1393     mips64
1394     parisc
1395     ppc
1396     ppc64
1397     s390
1398     sh4
1399     sparc
1400     sparc64
1401     tilegx
1402     tilepro
1403     tomi
1404     x86
1405     x86_32
1406     x86_64
1407 "
1408
1409 ARCH_EXT_LIST_ARM="
1410     armv5te
1411     armv6
1412     armv6t2
1413     armv8
1414     neon
1415     vfp
1416     vfpv3
1417 "
1418
1419 ARCH_EXT_LIST_X86_SIMD="
1420     amd3dnow
1421     amd3dnowext
1422     avx
1423     avx2
1424     fma3
1425     fma4
1426     mmx
1427     mmxext
1428     sse
1429     sse2
1430     sse3
1431     sse4
1432     sse42
1433     ssse3
1434     xop
1435 "
1436
1437 ARCH_EXT_LIST_PPC="
1438     altivec
1439     dcbzl
1440     ldbrx
1441     power8
1442     ppc4xx
1443     vsx
1444 "
1445
1446 ARCH_EXT_LIST_X86="
1447     $ARCH_EXT_LIST_X86_SIMD
1448     cpunop
1449     i686
1450 "
1451
1452 ARCH_EXT_LIST_MIPS="
1453     loongson
1454     mips32r1
1455     mips64r1
1456     mips32r2
1457     mips64r2
1458     mips32r6
1459     mips64r6
1460 "
1461
1462 ARCH_EXT_LIST="
1463     $ARCH_EXT_LIST_ARM
1464     $ARCH_EXT_LIST_MIPS
1465     $ARCH_EXT_LIST_PPC
1466     $ARCH_EXT_LIST_X86
1467     vis
1468 "
1469
1470 ARCH_FEATURES="
1471     aligned_stack
1472     fast_64bit
1473     fast_clz
1474     fast_cmov
1475     local_aligned_8
1476     local_aligned_16
1477     local_aligned_32
1478     simd_align_16
1479     simd_align_32
1480 "
1481
1482 BUILTIN_LIST="
1483     atomic_cas_ptr
1484     machine_rw_barrier
1485     MemoryBarrier
1486     mm_empty
1487     rdtsc
1488     sem_timedwait
1489     sync_val_compare_and_swap
1490 "
1491 HAVE_LIST_CMDLINE="
1492     inline_asm
1493     symver
1494     yasm
1495 "
1496
1497 HAVE_LIST_PUB="
1498     bigendian
1499     fast_unaligned
1500 "
1501
1502 HEADERS_LIST="
1503     AVFoundation_AVFoundation_h
1504     alsa_asoundlib_h
1505     altivec_h
1506     arpa_inet_h
1507     cdio_paranoia_h
1508     cdio_paranoia_paranoia_h
1509     dispatch_dispatch_h
1510     dev_bktr_ioctl_bt848_h
1511     dev_bktr_ioctl_meteor_h
1512     dev_ic_bt8xx_h
1513     dev_video_bktr_ioctl_bt848_h
1514     dev_video_meteor_ioctl_meteor_h
1515     direct_h
1516     dlfcn_h
1517     d3d11_h
1518     dxva_h
1519     gsm_h
1520     io_h
1521     mach_mach_time_h
1522     machine_ioctl_bt848_h
1523     machine_ioctl_meteor_h
1524     malloc_h
1525     poll_h
1526     sndio_h
1527     soundcard_h
1528     stdatomic_h
1529     sys_mman_h
1530     sys_param_h
1531     sys_resource_h
1532     sys_select_h
1533     sys_soundcard_h
1534     sys_time_h
1535     sys_un_h
1536     sys_videoio_h
1537     unistd_h
1538     valgrind_valgrind_h
1539     windows_h
1540     winsock2_h
1541 "
1542
1543 INTRINSICS_LIST="
1544     intrinsics_neon
1545 "
1546
1547 MATH_FUNCS="
1548     atanf
1549     atan2f
1550     cbrtf
1551     cosf
1552     exp2
1553     exp2f
1554     expf
1555     isinf
1556     isnan
1557     ldexpf
1558     llrint
1559     llrintf
1560     log2
1561     log2f
1562     log10f
1563     lrint
1564     lrintf
1565     powf
1566     rint
1567     round
1568     roundf
1569     sinf
1570     trunc
1571     truncf
1572 "
1573
1574 SYSTEM_FUNCS="
1575     aligned_malloc
1576     clock_gettime
1577     closesocket
1578     CommandLineToArgvW
1579     CoTaskMemFree
1580     CryptGenRandom
1581     dlopen
1582     fcntl
1583     flt_lim
1584     fork
1585     getaddrinfo
1586     gethrtime
1587     getopt
1588     GetProcessAffinityMask
1589     GetProcessMemoryInfo
1590     GetProcessTimes
1591     getrusage
1592     GetSystemTimeAsFileTime
1593     gettimeofday
1594     gmtime_r
1595     inet_aton
1596     isatty
1597     jack_port_get_latency_range
1598     LoadLibrary
1599     localtime_r
1600     mach_absolute_time
1601     MapViewOfFile
1602     memalign
1603     mkstemp
1604     mmap
1605     mprotect
1606     nanosleep
1607     posix_memalign
1608     sched_getaffinity
1609     SetConsoleTextAttribute
1610     setmode
1611     setrlimit
1612     Sleep
1613     strerror_r
1614     sysconf
1615     sysctl
1616     usleep
1617     VirtualAlloc
1618 "
1619
1620 TOOLCHAIN_FEATURES="
1621     as_dn_directive
1622     as_fpu_directive
1623     as_func
1624     as_object_arch
1625     asm_mod_q
1626     attribute_may_alias
1627     attribute_packed
1628     ebp_available
1629     ebx_available
1630     gnu_as
1631     ibm_asm
1632     inline_asm_labels
1633     pragma_deprecated
1634     symver_asm_label
1635     symver_gnu_asm
1636     vfp_args
1637     xform_asm
1638     xmm_clobbers
1639 "
1640
1641 TYPES_LIST="
1642     CONDITION_VARIABLE_Ptr
1643     socklen_t
1644     struct_addrinfo
1645     struct_group_source_req
1646     struct_ip_mreq_source
1647     struct_ipv6_mreq
1648     struct_pollfd
1649     struct_rusage_ru_maxrss
1650     struct_sockaddr_in6
1651     struct_sockaddr_sa_len
1652     struct_sockaddr_storage
1653     struct_v4l2_frmivalenum_discrete
1654 "
1655
1656 HAVE_LIST="
1657     $ARCH_EXT_LIST
1658     $(add_suffix _external $ARCH_EXT_LIST)
1659     $(add_suffix _inline   $ARCH_EXT_LIST)
1660     $ARCH_FEATURES
1661     $BUILTIN_LIST
1662     $HAVE_LIST_CMDLINE
1663     $HAVE_LIST_PUB
1664     $HEADERS_LIST
1665     $INTRINSICS_LIST
1666     $MATH_FUNCS
1667     $SYSTEM_FUNCS
1668     $THREADS_LIST
1669     $TOOLCHAIN_FEATURES
1670     $TYPES_LIST
1671     dos_paths
1672     dxva2_lib
1673     libc_msvcrt
1674     libdc1394_1
1675     libdc1394_2
1676     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1677     sdl
1678     section_data_rel_ro
1679     threads
1680     vaapi_drm
1681     vaapi_x11
1682     vdpau_x11
1683     xlib
1684 "
1685
1686 # options emitted with CONFIG_ prefix but not available on the command line
1687 CONFIG_EXTRA="
1688     aandcttables
1689     ac3dsp
1690     audio_frame_queue
1691     audiodsp
1692     blockdsp
1693     bswapdsp
1694     cabac
1695     dirac_parse
1696     dvprofile
1697     faandct
1698     faanidct
1699     fdctdsp
1700     flacdsp
1701     fmtconvert
1702     g722dsp
1703     gcrypt
1704     gmp
1705     golomb
1706     gplv3
1707     h263dsp
1708     h264chroma
1709     h264dsp
1710     h264parse
1711     h264pred
1712     h264qpel
1713     hpeldsp
1714     huffman
1715     huffyuvdsp
1716     huffyuvencdsp
1717     idctdsp
1718     iirfilter
1719     imdct15
1720     intrax8
1721     iso_media
1722     ividsp
1723     jpegtables
1724     libx262
1725     lgplv3
1726     lpc
1727     lzf
1728     me_cmp
1729     mpeg_er
1730     mpegaudio
1731     mpegaudiodsp
1732     mpegvideo
1733     mpegvideoenc
1734     mss34dsp
1735     pixblockdsp
1736     qpeldsp
1737     qsv
1738     qsvdec
1739     qsvenc
1740     rangecoder
1741     riffdec
1742     riffenc
1743     rtpdec
1744     rtpenc_chain
1745     rv34dsp
1746     sinewin
1747     snappy
1748     srtp
1749     startcode
1750     texturedsp
1751     texturedspenc
1752     tpeldsp
1753     vaapi_encode
1754     vc1dsp
1755     videodsp
1756     vp3dsp
1757     vp56dsp
1758     vp8dsp
1759     wma_freqs
1760     wmv2dsp
1761 "
1762
1763 CMDLINE_SELECT="
1764     $ARCH_EXT_LIST
1765     $CONFIG_LIST
1766     $HAVE_LIST_CMDLINE
1767     $THREADS_LIST
1768     asm
1769     cross_compile
1770     debug
1771     extra_warnings
1772     logging
1773     lto
1774     optimizations
1775     rpath
1776 "
1777
1778 PATHS_LIST="
1779     bindir
1780     datadir
1781     docdir
1782     incdir
1783     libdir
1784     mandir
1785     prefix
1786     shlibdir
1787 "
1788
1789 CMDLINE_SET="
1790     $PATHS_LIST
1791     ar
1792     arch
1793     as
1794     build_suffix
1795     cc
1796     objcc
1797     cpu
1798     cross_prefix
1799     custom_allocator
1800     dep_cc
1801     env
1802     extra_version
1803     host_cc
1804     host_cflags
1805     host_ld
1806     host_ldflags
1807     host_libs
1808     host_os
1809     ld
1810     logfile
1811     malloc_prefix
1812     nm
1813     optflags
1814     pkg_config
1815     pkg_config_flags
1816     random_seed
1817     samples
1818     sysinclude
1819     sysroot
1820     target_exec
1821     target_os
1822     target_path
1823     target_samples
1824     toolchain
1825 "
1826
1827 CMDLINE_APPEND="
1828     extra_cflags
1829     extra_objcflags
1830     host_cppflags
1831 "
1832
1833 # code dependency declarations
1834
1835 # architecture extensions
1836
1837 armv5te_deps="arm"
1838 armv6_deps="arm"
1839 armv6t2_deps="arm"
1840 armv8_deps="aarch64"
1841 neon_deps_any="aarch64 arm"
1842 intrinsics_neon_deps="neon"
1843 vfp_deps_any="aarch64 arm"
1844 vfpv3_deps="vfp"
1845
1846 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1847
1848 altivec_deps="ppc"
1849 ppc4xx_deps="ppc"
1850 vsx_deps="altivec"
1851 power8_deps="vsx"
1852
1853 cpunop_deps="i686"
1854 x86_64_select="i686"
1855 x86_64_suggest="fast_cmov"
1856
1857 amd3dnow_deps="mmx"
1858 amd3dnowext_deps="amd3dnow"
1859 i686_deps="x86"
1860 mmx_deps="x86"
1861 mmxext_deps="mmx"
1862 sse_deps="mmxext"
1863 sse2_deps="sse"
1864 sse3_deps="sse2"
1865 ssse3_deps="sse3"
1866 sse4_deps="ssse3"
1867 sse42_deps="sse4"
1868 avx_deps="sse42"
1869 xop_deps="avx"
1870 fma3_deps="avx"
1871 fma4_deps="avx"
1872 avx2_deps="avx"
1873
1874 mmx_external_deps="yasm"
1875 mmx_inline_deps="inline_asm"
1876 mmx_suggest="mmx_external mmx_inline"
1877
1878 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1879     eval dep=\$${ext}_deps
1880     eval ${ext}_external_deps='"${dep}_external"'
1881     eval ${ext}_inline_deps='"${dep}_inline"'
1882     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1883 done
1884
1885 aligned_stack_if_any="aarch64 ppc x86"
1886 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1887 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1888 fast_unaligned_if_any="aarch64 ppc x86"
1889 simd_align_16_if_any="altivec neon sse"
1890 simd_align_32_if_any="avx"
1891
1892 # system capabilities
1893 symver_if_any="symver_asm_label symver_gnu_asm"
1894 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1895
1896 # threading support
1897 atomics_gcc_if="sync_val_compare_and_swap"
1898 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1899 atomics_win32_if="MemoryBarrier"
1900 atomics_native_if_any="$ATOMICS_LIST"
1901 w32threads_deps="atomics_native"
1902 threads_if_any="$THREADS_LIST"
1903
1904 # subsystems
1905 dct_select="rdft"
1906 dirac_parse_select="golomb"
1907 error_resilience_select="me_cmp"
1908 faandct_deps="faan fdctdsp"
1909 faanidct_deps="faan idctdsp"
1910 h264dsp_select="startcode"
1911 intrax8_select="blockdsp idctdsp"
1912 mdct_select="fft"
1913 rdft_select="fft"
1914 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1915 mpeg_er_select="error_resilience"
1916 mpegaudio_select="mpegaudiodsp"
1917 mpegaudiodsp_select="dct"
1918 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1919 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1920 vc1dsp_select="h264chroma qpeldsp startcode"
1921
1922 # decoders / encoders
1923 aac_decoder_select="imdct15 mdct sinewin"
1924 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1925 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1926 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1927 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1928 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1929 adpcm_g722_decoder_select="g722dsp"
1930 adpcm_g722_encoder_select="g722dsp"
1931 aic_decoder_select="golomb idctdsp"
1932 alac_encoder_select="lpc"
1933 als_decoder_select="bswapdsp"
1934 amrnb_decoder_select="lsp"
1935 amrwb_decoder_select="lsp"
1936 amv_decoder_select="sp5x_decoder"
1937 ape_decoder_select="bswapdsp"
1938 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1939 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1940 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1941 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1942 atrac1_decoder_select="mdct sinewin"
1943 atrac3_decoder_select="mdct"
1944 atrac3p_decoder_select="mdct sinewin"
1945 bink_decoder_select="blockdsp hpeldsp"
1946 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1947 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1948 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1949 cllc_decoder_select="bswapdsp"
1950 comfortnoise_encoder_select="lpc"
1951 cook_decoder_select="audiodsp mdct sinewin"
1952 cscd_decoder_select="lzo"
1953 cscd_decoder_suggest="zlib"
1954 dca_decoder_select="fmtconvert mdct"
1955 dds_decoder_select="texturedsp"
1956 dnxhd_decoder_select="blockdsp idctdsp"
1957 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1958 dvvideo_decoder_select="dvprofile idctdsp"
1959 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1960 dxa_decoder_deps="zlib"
1961 dxv_decoder_select="lzf texturedsp"
1962 eac3_decoder_select="ac3_decoder"
1963 eac3_encoder_select="ac3_encoder"
1964 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1965 eatgq_decoder_select="aandcttables idctdsp"
1966 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1967 exr_decoder_deps="zlib"
1968 ffv1_decoder_select="golomb rangecoder"
1969 ffv1_encoder_select="rangecoder"
1970 ffvhuff_decoder_select="huffyuv_decoder"
1971 ffvhuff_encoder_select="huffyuv_encoder"
1972 fic_decoder_select="golomb"
1973 flac_decoder_select="flacdsp golomb"
1974 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1975 flashsv_decoder_deps="zlib"
1976 flashsv_encoder_deps="zlib"
1977 flashsv2_decoder_deps="zlib"
1978 flv_decoder_select="h263_decoder"
1979 flv_encoder_select="h263_encoder"
1980 fourxm_decoder_select="blockdsp bswapdsp"
1981 fraps_decoder_select="bswapdsp huffman"
1982 g2m_decoder_deps="zlib"
1983 g2m_decoder_select="blockdsp idctdsp jpegtables"
1984 h261_decoder_select="mpeg_er mpegvideo"
1985 h261_encoder_select="aandcttables mpegvideoenc"
1986 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1987 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1988 h263i_decoder_select="h263_decoder"
1989 h263p_encoder_select="h263_encoder"
1990 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1991 h264_decoder_suggest="error_resilience"
1992 hap_decoder_select="snappy texturedsp"
1993 hap_encoder_deps="libsnappy"
1994 hap_encoder_select="texturedspenc"
1995 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1996 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1997 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1998 iac_decoder_select="imc_decoder"
1999 imc_decoder_select="bswapdsp fft mdct sinewin"
2000 indeo3_decoder_select="hpeldsp"
2001 indeo4_decoder_select="ividsp"
2002 indeo5_decoder_select="ividsp"
2003 interplay_video_decoder_select="hpeldsp"
2004 jpegls_decoder_select="golomb mjpeg_decoder"
2005 jpegls_encoder_select="golomb"
2006 jv_decoder_select="blockdsp"
2007 lagarith_decoder_select="huffyuvdsp"
2008 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2009 loco_decoder_select="golomb"
2010 magicyuv_decoder_select="huffyuvdsp"
2011 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2012 metasound_decoder_select="lsp mdct sinewin"
2013 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2014 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2015 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2016 mjpegb_decoder_select="mjpeg_decoder"
2017 mlp_decoder_select="mlp_parser"
2018 motionpixels_decoder_select="bswapdsp"
2019 mp1_decoder_select="mpegaudio"
2020 mp1float_decoder_select="mpegaudio"
2021 mp2_decoder_select="mpegaudio"
2022 mp2float_decoder_select="mpegaudio"
2023 mp3_decoder_select="mpegaudio"
2024 mp3adu_decoder_select="mpegaudio"
2025 mp3adufloat_decoder_select="mpegaudio"
2026 mp3float_decoder_select="mpegaudio"
2027 mp3on4_decoder_select="mpegaudio"
2028 mp3on4float_decoder_select="mpegaudio"
2029 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2030 mpc8_decoder_select="mpegaudiodsp"
2031 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2032 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2033 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2034 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2035 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2036 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2037 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2038 mpeg4_encoder_select="h263_encoder"
2039 msa1_decoder_select="mss34dsp"
2040 msmpeg4v1_decoder_select="h263_decoder"
2041 msmpeg4v2_decoder_select="h263_decoder"
2042 msmpeg4v2_encoder_select="h263_encoder"
2043 msmpeg4v3_decoder_select="h263_decoder"
2044 msmpeg4v3_encoder_select="h263_encoder"
2045 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2046 mts2_decoder_select="mss34dsp"
2047 mxpeg_decoder_select="mjpeg_decoder"
2048 nellymoser_decoder_select="mdct sinewin"
2049 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2050 nuv_decoder_select="idctdsp lzo"
2051 on2avc_decoder_select="mdct"
2052 opus_decoder_deps="avresample"
2053 opus_decoder_select="imdct15"
2054 png_decoder_deps="zlib"
2055 png_encoder_deps="zlib"
2056 png_encoder_select="huffyuvencdsp"
2057 prores_decoder_select="idctdsp"
2058 prores_encoder_select="fdctdsp"
2059 qcelp_decoder_select="lsp"
2060 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2061 ra_144_encoder_select="audio_frame_queue lpc"
2062 ralf_decoder_select="golomb"
2063 rscc_decoder_deps="zlib"
2064 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2065 rv10_encoder_select="h263_encoder"
2066 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2067 rv20_encoder_select="h263_encoder"
2068 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2069 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2070 screenpresso_decoder_deps="zlib"
2071 shorten_decoder_select="golomb"
2072 sipr_decoder_select="lsp"
2073 sp5x_decoder_select="mjpeg_decoder"
2074 svq1_decoder_select="hpeldsp"
2075 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2076 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2077 svq3_decoder_suggest="zlib"
2078 tak_decoder_select="audiodsp"
2079 tdsc_decoder_deps="zlib"
2080 tdsc_decoder_select="mjpeg_decoder"
2081 theora_decoder_select="vp3_decoder"
2082 thp_decoder_select="mjpeg_decoder"
2083 tiff_decoder_suggest="zlib"
2084 tiff_encoder_suggest="zlib"
2085 truehd_decoder_select="mlp_decoder"
2086 truemotion2_decoder_select="bswapdsp"
2087 truespeech_decoder_select="bswapdsp"
2088 tscc_decoder_deps="zlib"
2089 txd_decoder_select="texturedsp"
2090 twinvq_decoder_select="mdct lsp sinewin"
2091 utvideo_decoder_select="bswapdsp"
2092 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2093 vble_decoder_select="huffyuvdsp"
2094 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2095 vc1image_decoder_select="vc1_decoder"
2096 vorbis_decoder_select="mdct"
2097 vorbis_encoder_select="mdct"
2098 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2099 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2100 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2101 vp6a_decoder_select="vp6_decoder"
2102 vp6f_decoder_select="vp6_decoder"
2103 vp7_decoder_select="h264pred videodsp vp8dsp"
2104 vp8_decoder_select="h264pred videodsp vp8dsp"
2105 vp9_decoder_select="videodsp"
2106 webp_decoder_select="vp8_decoder"
2107 wmapro_decoder_select="mdct sinewin wma_freqs"
2108 wmav1_decoder_select="mdct sinewin wma_freqs"
2109 wmav1_encoder_select="mdct sinewin wma_freqs"
2110 wmav2_decoder_select="mdct sinewin wma_freqs"
2111 wmav2_encoder_select="mdct sinewin wma_freqs"
2112 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2113 wmv1_decoder_select="h263_decoder"
2114 wmv1_encoder_select="h263_encoder"
2115 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2116 wmv2_encoder_select="h263_encoder wmv2dsp"
2117 wmv3_decoder_select="vc1_decoder"
2118 wmv3image_decoder_select="wmv3_decoder"
2119 zerocodec_decoder_deps="zlib"
2120 zlib_decoder_deps="zlib"
2121 zlib_encoder_deps="zlib"
2122 zmbv_decoder_deps="zlib"
2123 zmbv_encoder_deps="zlib"
2124
2125 # hardware accelerators
2126 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2127 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2128 vaapi_deps="va_va_h"
2129 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2130 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2131 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2132
2133 h263_vaapi_hwaccel_deps="vaapi"
2134 h263_vaapi_hwaccel_select="h263_decoder"
2135 h264_d3d11va_hwaccel_deps="d3d11va"
2136 h264_d3d11va_hwaccel_select="h264_decoder"
2137 h264_dxva2_hwaccel_deps="dxva2"
2138 h264_dxva2_hwaccel_select="h264_decoder"
2139 h264_mmal_decoder_deps="mmal"
2140 h264_mmal_decoder_select="mmal"
2141 h264_mmal_hwaccel_deps="mmal"
2142 h264_omx_encoder_deps="omx"
2143 h264_qsv_hwaccel_deps="libmfx"
2144 h264_vaapi_hwaccel_deps="vaapi"
2145 h264_vaapi_hwaccel_select="h264_decoder"
2146 h264_vda_hwaccel_deps="vda"
2147 h264_vda_hwaccel_select="h264_decoder"
2148 h264_vda_old_hwaccel_deps="vda"
2149 h264_vda_old_hwaccel_select="h264_decoder"
2150 h264_vdpau_hwaccel_deps="vdpau"
2151 h264_vdpau_hwaccel_select="h264_decoder"
2152 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2153 hevc_d3d11va_hwaccel_select="hevc_decoder"
2154 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2155 hevc_dxva2_hwaccel_select="hevc_decoder"
2156 hevc_qsv_hwaccel_deps="libmfx"
2157 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2158 hevc_vdpau_hwaccel_select="hevc_decoder"
2159 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2160 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2161 mpeg1_vdpau_hwaccel_deps="vdpau"
2162 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2163 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2164 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2165 mpeg2_dxva2_hwaccel_deps="dxva2"
2166 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2167 mpeg2_mmal_decoder_deps="mmal"
2168 mpeg2_mmal_decoder_select="mmal"
2169 mpeg2_mmal_hwaccel_deps="mmal"
2170 mpeg2_qsv_hwaccel_deps="libmfx"
2171 mpeg2_vaapi_hwaccel_deps="vaapi"
2172 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2173 mpeg2_vdpau_hwaccel_deps="vdpau"
2174 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2175 mpeg4_omx_encoder_deps="omx"
2176 mpeg4_vaapi_hwaccel_deps="vaapi"
2177 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2178 mpeg4_vdpau_hwaccel_deps="vdpau"
2179 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2180 vc1_d3d11va_hwaccel_deps="d3d11va"
2181 vc1_d3d11va_hwaccel_select="vc1_decoder"
2182 vc1_dxva2_hwaccel_deps="dxva2"
2183 vc1_dxva2_hwaccel_select="vc1_decoder"
2184 vc1_mmal_decoder_deps="mmal"
2185 vc1_mmal_decoder_select="mmal"
2186 vc1_mmal_hwaccel_deps="mmal"
2187 vc1_qsv_hwaccel_deps="libmfx"
2188 vc1_vaapi_hwaccel_deps="vaapi"
2189 vc1_vaapi_hwaccel_select="vc1_decoder"
2190 vc1_vdpau_hwaccel_deps="vdpau"
2191 vc1_vdpau_hwaccel_select="vc1_decoder"
2192 vp8_qsv_hwaccel_deps="libmfx"
2193 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2194 vp8_vaapi_hwaccel_select="vp8_decoder"
2195 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2196 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2197 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2198 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2199
2200 # hardware-accelerated codecs
2201 nvenc_deps_any="dlopen LoadLibrary"
2202 nvenc_extralibs='$ldl'
2203 omx_deps="dlopen pthreads"
2204 omx_extralibs='$ldl'
2205 qsvdec_select="qsv"
2206 qsvenc_select="qsv"
2207 vaapi_encode_deps="vaapi"
2208
2209 hwupload_cuda_filter_deps="cuda"
2210 scale_npp_filter_deps="cuda libnpp"
2211
2212 h264_nvenc_encoder_deps="nvenc"
2213 h264_qsv_decoder_deps="libmfx"
2214 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2215 h264_qsv_encoder_deps="libmfx"
2216 h264_qsv_encoder_select="qsvenc"
2217 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2218 h264_vaapi_encoder_select="vaapi_encode golomb"
2219
2220 hevc_nvenc_encoder_deps="nvenc"
2221 hevc_qsv_decoder_deps="libmfx"
2222 hevc_qsv_encoder_deps="libmfx"
2223 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2224 hevc_qsv_encoder_select="qsvenc"
2225 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2226 hevc_vaapi_encoder_select="vaapi_encode golomb"
2227 mpeg2_qsv_decoder_deps="libmfx"
2228 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2229 mpeg2_qsv_encoder_deps="libmfx"
2230 mpeg2_qsv_encoder_select="qsvenc"
2231 vc1_qsv_decoder_deps="libmfx"
2232 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2233 vp8_qsv_decoder_deps="libmfx"
2234 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2235
2236 nvenc_h264_encoder_deps="nvenc"
2237 nvenc_hevc_encoder_deps="nvenc"
2238
2239 # parsers
2240 h264_parser_select="golomb h264dsp h264parse"
2241 hevc_parser_select="golomb"
2242 mpegvideo_parser_select="mpegvideo"
2243 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2244 vc1_parser_select="vc1dsp"
2245
2246 # bitstream_filters
2247 mjpeg2jpeg_bsf_select="jpegtables"
2248
2249 # external libraries
2250 libdcadec_decoder_deps="libdcadec"
2251 libfaac_encoder_deps="libfaac"
2252 libfaac_encoder_select="audio_frame_queue"
2253 libfdk_aac_decoder_deps="libfdk_aac"
2254 libfdk_aac_encoder_deps="libfdk_aac"
2255 libfdk_aac_encoder_select="audio_frame_queue"
2256 libgsm_decoder_deps="libgsm"
2257 libgsm_encoder_deps="libgsm"
2258 libgsm_ms_decoder_deps="libgsm"
2259 libgsm_ms_encoder_deps="libgsm"
2260 libilbc_decoder_deps="libilbc"
2261 libilbc_encoder_deps="libilbc"
2262 libkvazaar_encoder_deps="libkvazaar"
2263 libmp3lame_encoder_deps="libmp3lame"
2264 libmp3lame_encoder_select="audio_frame_queue"
2265 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2266 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2267 libopencore_amrnb_encoder_select="audio_frame_queue"
2268 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2269 libopenh264_decoder_deps="libopenh264"
2270 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2271 libopenh264_encoder_deps="libopenh264"
2272 libopenjpeg_decoder_deps="libopenjpeg"
2273 libopenjpeg_encoder_deps="libopenjpeg"
2274 libopus_decoder_deps="libopus"
2275 libopus_encoder_deps="libopus"
2276 libopus_encoder_select="audio_frame_queue"
2277 libschroedinger_decoder_deps="libschroedinger"
2278 libschroedinger_encoder_deps="libschroedinger"
2279 libspeex_decoder_deps="libspeex"
2280 libspeex_encoder_deps="libspeex"
2281 libspeex_encoder_select="audio_frame_queue"
2282 libtheora_encoder_deps="libtheora"
2283 libtwolame_encoder_deps="libtwolame"
2284 libvo_aacenc_encoder_deps="libvo_aacenc"
2285 libvo_aacenc_encoder_select="audio_frame_queue"
2286 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2287 libvorbis_encoder_deps="libvorbis"
2288 libvorbis_encoder_select="audio_frame_queue"
2289 libvpx_vp8_decoder_deps="libvpx"
2290 libvpx_vp8_encoder_deps="libvpx"
2291 libvpx_vp9_decoder_deps="libvpx"
2292 libvpx_vp9_encoder_deps="libvpx"
2293 libwavpack_encoder_deps="libwavpack"
2294 libwebp_encoder_deps="libwebp"
2295 libx262_encoder_deps="libx262"
2296 libx264_encoder_deps="libx264"
2297 libx265_encoder_deps="libx265"
2298 libxavs_encoder_deps="libxavs"
2299 libxvid_encoder_deps="libxvid mkstemp"
2300
2301 # demuxers / muxers
2302 ac3_demuxer_select="ac3_parser"
2303 asf_demuxer_select="riffdec"
2304 asf_muxer_select="riffenc"
2305 asf_stream_muxer_select="asf_muxer"
2306 avi_demuxer_select="iso_media riffdec"
2307 avi_muxer_select="riffenc"
2308 avisynth_demuxer_deps="avisynth"
2309 avisynth_demuxer_select="riffdec"
2310 caf_demuxer_select="iso_media riffdec"
2311 dash_muxer_select="mp4_muxer"
2312 dirac_demuxer_select="dirac_parser"
2313 dv_demuxer_select="dvprofile"
2314 dv_muxer_select="dvprofile"
2315 dxa_demuxer_select="riffdec"
2316 eac3_demuxer_select="ac3_parser"
2317 f4v_muxer_select="mov_muxer"
2318 flac_demuxer_select="flac_parser"
2319 hds_muxer_select="flv_muxer"
2320 hls_muxer_select="mpegts_muxer"
2321 ipod_muxer_select="mov_muxer"
2322 ismv_muxer_select="mov_muxer"
2323 matroska_audio_muxer_select="matroska_muxer"
2324 matroska_demuxer_select="iso_media riffdec"
2325 matroska_demuxer_suggest="bzlib lzo zlib"
2326 matroska_muxer_select="iso_media riffenc"
2327 mmf_muxer_select="riffenc"
2328 mov_demuxer_select="iso_media riffdec"
2329 mov_demuxer_suggest="zlib"
2330 mov_muxer_select="iso_media riffenc rtpenc_chain"
2331 mp3_demuxer_select="mpegaudio_parser"
2332 mp4_muxer_select="mov_muxer"
2333 mpegts_demuxer_select="iso_media"
2334 mpegts_muxer_select="adts_muxer latm_muxer"
2335 mpegtsraw_demuxer_select="mpegts_demuxer"
2336 mxf_d10_muxer_select="mxf_muxer"
2337 nut_muxer_select="riffenc"
2338 nuv_demuxer_select="riffdec"
2339 oga_muxer_select="ogg_muxer"
2340 ogg_demuxer_select="dirac_parse"
2341 opus_muxer_select="ogg_muxer"
2342 psp_muxer_select="mov_muxer"
2343 rtp_demuxer_select="sdp_demuxer"
2344 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2345 rtsp_demuxer_select="http_protocol rtpdec"
2346 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2347 sap_demuxer_select="sdp_demuxer"
2348 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2349 sdp_demuxer_select="rtpdec"
2350 smoothstreaming_muxer_select="ismv_muxer"
2351 spdif_muxer_select="aac_parser"
2352 spx_muxer_select="ogg_muxer"
2353 swf_demuxer_suggest="zlib"
2354 tak_demuxer_select="tak_parser"
2355 tg2_muxer_select="mov_muxer"
2356 tgp_muxer_select="mov_muxer"
2357 w64_demuxer_select="wav_demuxer"
2358 wav_demuxer_select="riffdec"
2359 wav_muxer_select="riffenc"
2360 webm_muxer_select="iso_media riffenc"
2361 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2362 wtv_demuxer_select="mpegts_demuxer riffdec"
2363 xmv_demuxer_select="riffdec"
2364 xwma_demuxer_select="riffdec"
2365
2366 # indevs / outdevs
2367 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2368 alsa_outdev_deps="alsa_asoundlib_h"
2369 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2370 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2371 dv1394_indev_deps="dv1394"
2372 dv1394_indev_select="dv_demuxer"
2373 fbdev_indev_deps="linux_fb_h"
2374 jack_indev_deps="jack_jack_h"
2375 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2376 libcdio_indev_deps="libcdio"
2377 libdc1394_indev_deps="libdc1394"
2378 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2379 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2380 pulse_indev_deps="libpulse"
2381 sndio_indev_deps="sndio_h"
2382 sndio_outdev_deps="sndio_h"
2383 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2384 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2385 vfwcap_indev_extralibs="-lavicap32"
2386 xcbgrab_indev_deps="libxcb"
2387
2388 # protocols
2389 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2390 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2391 ffrtmpcrypt_protocol_select="tcp_protocol"
2392 ffrtmphttp_protocol_deps="!librtmp_protocol"
2393 ffrtmphttp_protocol_select="http_protocol"
2394 gopher_protocol_select="network"
2395 http_protocol_select="tcp_protocol"
2396 httpproxy_protocol_select="tcp_protocol"
2397 https_protocol_select="tls_protocol"
2398 icecast_protocol_select="http_protocol"
2399 librtmp_protocol_deps="librtmp"
2400 librtmpe_protocol_deps="librtmp"
2401 librtmps_protocol_deps="librtmp"
2402 librtmpt_protocol_deps="librtmp"
2403 librtmpte_protocol_deps="librtmp"
2404 mmsh_protocol_select="http_protocol"
2405 mmst_protocol_select="network"
2406 rtmp_protocol_deps="!librtmp_protocol"
2407 rtmp_protocol_select="tcp_protocol"
2408 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2409 rtmps_protocol_deps="!librtmp_protocol"
2410 rtmps_protocol_select="tls_protocol"
2411 rtmpt_protocol_select="ffrtmphttp_protocol"
2412 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2413 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2414 rtp_protocol_select="udp_protocol"
2415 sctp_protocol_deps="struct_sctp_event_subscribe"
2416 sctp_protocol_select="network"
2417 srtp_protocol_select="rtp_protocol srtp"
2418 tcp_protocol_select="network"
2419 tls_gnutls_protocol_deps="gnutls"
2420 tls_gnutls_protocol_select="tcp_protocol"
2421 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2422 tls_openssl_protocol_select="tcp_protocol"
2423 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2424 udp_protocol_select="network"
2425 unix_protocol_deps="sys_un_h"
2426 unix_protocol_select="network"
2427
2428 # filters
2429 blackframe_filter_deps="gpl"
2430 boxblur_filter_deps="gpl"
2431 bs2b_filter_deps="libbs2b"
2432 cropdetect_filter_deps="gpl"
2433 deinterlace_qsv_filter_deps="libmfx"
2434 delogo_filter_deps="gpl"
2435 drawtext_filter_deps="libfreetype"
2436 frei0r_filter_deps="frei0r dlopen"
2437 frei0r_filter_extralibs='$ldl'
2438 frei0r_src_filter_deps="frei0r dlopen"
2439 frei0r_src_filter_extralibs='$ldl'
2440 hdcd_filter_deps="libhdcd"
2441 hqdn3d_filter_deps="gpl"
2442 interlace_filter_deps="gpl"
2443 ocv_filter_deps="libopencv"
2444 resample_filter_deps="avresample"
2445 scale_filter_deps="swscale"
2446 scale_qsv_filter_deps="libmfx"
2447 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2448
2449 # examples
2450 decode_audio_example_deps="avcodec avutil"
2451 decode_video_example_deps="avcodec avutil"
2452 encode_audio_example_deps="avcodec avutil"
2453 encode_video_example_deps="avcodec avutil"
2454 filter_audio_example_deps="avfilter avutil"
2455 metadata_example_deps="avformat avutil"
2456 output_example_deps="avcodec avformat avutil swscale"
2457 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2458 transcode_aac_example_deps="avcodec avformat avresample"
2459
2460 # libraries, in linking order
2461 avcodec_deps="avutil"
2462 avdevice_deps="avformat avcodec avutil"
2463 avfilter_deps="avutil"
2464 avformat_deps="avcodec avutil"
2465 avresample_deps="avutil"
2466 swscale_deps="avutil"
2467
2468 # programs
2469 avconv_deps="avcodec avfilter avformat avresample swscale"
2470 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2471                fps_filter null_filter resample_filter scale_filter
2472                trim_filter"
2473 avplay_deps="avcodec avfilter avformat avresample sdl"
2474 avplay_libs='$sdl_libs'
2475 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2476 avprobe_deps="avcodec avformat"
2477
2478 # documentation
2479 pod2man_deps="doc"
2480 texi2html_deps="doc"
2481
2482 # default parameters
2483
2484 logfile="config.log"
2485
2486 # installation paths
2487 prefix_default="/usr/local"
2488 bindir_default='${prefix}/bin'
2489 datadir_default='${prefix}/share/avconv'
2490 docdir_default='${prefix}/share/doc/libav'
2491 incdir_default='${prefix}/include'
2492 libdir_default='${prefix}/lib'
2493 mandir_default='${prefix}/share/man'
2494 shlibdir_default="$libdir_default"
2495
2496 # toolchain
2497 ar_default="ar"
2498 cc_default="gcc"
2499 host_cc_default="gcc"
2500 cp_f="cp -f"
2501 ln_s="ln -s -f"
2502 nm_default="nm -g"
2503 objformat="elf"
2504 pkg_config_default=pkg-config
2505 ranlib="ranlib"
2506 strip="strip"
2507 version_script='--version-script'
2508 yasmexe="yasm"
2509
2510 # machine
2511 arch_default=$(uname -m)
2512 cpu="generic"
2513 intrinsics="none"
2514
2515 # OS
2516 target_os_default=$(tolower $(uname -s))
2517 host_os=$target_os_default
2518
2519 # configurable options
2520 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2521
2522 enable asm
2523 enable debug
2524 enable doc
2525 enable faan faandct faanidct
2526 enable optimizations
2527 enable safe_bitstream_reader
2528 enable static
2529 enable swscale_alpha
2530 enable valgrind_backtrace
2531
2532 # By default, enable only those hwaccels that have no external dependencies.
2533 enable d3d11va dxva2 vda vdpau
2534
2535 # build settings
2536 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2537 LIBPREF="lib"
2538 LIBSUF=".a"
2539 FULLNAME='$(NAME)$(BUILDSUF)'
2540 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2541 SLIBPREF="lib"
2542 SLIBSUF=".so"
2543 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2544 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2545 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2546 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2547 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2548 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2549 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2550
2551 asflags_filter=echo
2552 cflags_filter=echo
2553 ldflags_filter=echo
2554
2555 AS_C='-c'
2556 AS_O='-o $@'
2557 CC_C='-c'
2558 CC_E='-E -o $@'
2559 CC_O='-o $@'
2560 OBJCC_C='-c'
2561 OBJCC_E='-E -o $@'
2562 OBJCC_O='-o $@'
2563 LD_O='-o $@'
2564 LD_LIB='-l%'
2565 LD_PATH='-L'
2566 HOSTCC_C='-c'
2567 HOSTCC_E='-E -o $@'
2568 HOSTCC_O='-o $@'
2569 HOSTLD_O='-o $@'
2570
2571 host_libs='-lm'
2572 host_cflags_filter=echo
2573 host_ldflags_filter=echo
2574
2575 target_path='$(CURDIR)'
2576
2577 # since the object filename is not given with the -MM flag, the compiler
2578 # is only able to print the basename, and we must add the path ourselves
2579 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2580 DEPFLAGS='-MM'
2581
2582 # find source path
2583 if test -f configure; then
2584     source_path=.
2585 else
2586     source_path=$(cd $(dirname "$0"); pwd)
2587     echo "$source_path" | grep -q '[[:blank:]]' &&
2588         die "Out of tree builds are impossible with whitespace in source path."
2589     test -e "$source_path/config.h" &&
2590         die "Out of tree builds are impossible with config.h in source dir."
2591 fi
2592
2593 for v in "$@"; do
2594     r=${v#*=}
2595     l=${v%"$r"}
2596     r=$(sh_quote "$r")
2597     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2598 done
2599
2600 find_things(){
2601     thing=$1
2602     pattern=$2
2603     file=$source_path/$3
2604     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2605 }
2606
2607 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2608 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2609 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2610 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2611 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2612 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2613 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2614 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2615 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2616
2617 find_things_extern(){
2618     thing=$1
2619     pattern=$2
2620     file=$source_path/$3
2621     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2622 }
2623
2624 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2625 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2626
2627 ALL_COMPONENTS="
2628     $BSF_LIST
2629     $DECODER_LIST
2630     $DEMUXER_LIST
2631     $ENCODER_LIST
2632     $FILTER_LIST
2633     $HWACCEL_LIST
2634     $INDEV_LIST
2635     $MUXER_LIST
2636     $OUTDEV_LIST
2637     $PARSER_LIST
2638     $PROTOCOL_LIST
2639 "
2640
2641 for n in $COMPONENT_LIST; do
2642     v=$(toupper ${n%s})_LIST
2643     eval enable \$$v
2644     eval ${n}_if_any="\$$v"
2645 done
2646
2647 enable $ARCH_EXT_LIST
2648
2649 die_unknown(){
2650     echo "Unknown option \"$1\"."
2651     echo "See $0 --help for available options."
2652     exit 1
2653 }
2654
2655 print_3_columns() {
2656     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2657 }
2658
2659 show_list() {
2660     suffix=_$1
2661     shift
2662     echo $* | sed s/$suffix//g | print_3_columns
2663     exit 0
2664 }
2665
2666 rand_list(){
2667     IFS=', '
2668     set -- $*
2669     unset IFS
2670     for thing; do
2671         comp=${thing%:*}
2672         prob=${thing#$comp}
2673         prob=${prob#:}
2674         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2675         echo "prob ${prob:-0.5}"
2676         printf '%s\n' $comp
2677     done
2678 }
2679
2680 do_random(){
2681     action=$1
2682     shift
2683     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2684     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2685 }
2686
2687 for opt do
2688     optval="${opt#*=}"
2689     case "$opt" in
2690         --extra-ldflags=*)
2691             add_ldflags $optval
2692         ;;
2693         --extra-ldexeflags=*)
2694             add_ldexeflags $optval
2695         ;;
2696         --extra-libs=*)
2697             add_extralibs $optval
2698         ;;
2699         --disable-devices)
2700             disable $INDEV_LIST $OUTDEV_LIST
2701         ;;
2702         --enable-debug=*)
2703             debuglevel="$optval"
2704         ;;
2705         --disable-programs)
2706             disable $PROGRAM_LIST
2707         ;;
2708         --disable-everything)
2709             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2710         ;;
2711         --disable-all)
2712             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2713             disable $LIBRARY_LIST $PROGRAM_LIST doc
2714         ;;
2715         --enable-random|--disable-random)
2716             action=${opt%%-random}
2717             do_random ${action#--} $COMPONENT_LIST
2718         ;;
2719         --enable-random=*|--disable-random=*)
2720             action=${opt%%-random=*}
2721             do_random ${action#--} $optval
2722         ;;
2723         --enable-*=*|--disable-*=*)
2724             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2725             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2726             eval list=\$$(toupper $thing)_LIST
2727             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2728             $action $(filter "$name" $list)
2729         ;;
2730         --enable-avserver|--disable-avserver*)
2731             warn "avserver has been removed, the ${opt} option is only"\
2732                  "provided for compatibility and will be removed in the future"
2733         ;;
2734         --enable-?*|--disable-?*)
2735             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2736             if is_in $option $COMPONENT_LIST; then
2737                 test $action = disable && action=unset
2738                 eval $action \$$(toupper ${option%s})_LIST
2739             elif is_in $option $CMDLINE_SELECT; then
2740                 $action $option
2741             else
2742                 die_unknown $opt
2743             fi
2744         ;;
2745         --list-*)
2746             NAME="${opt#--list-}"
2747             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2748             NAME=${NAME%s}
2749             eval show_list $NAME \$$(toupper $NAME)_LIST
2750         ;;
2751         --help|-h) show_help
2752         ;;
2753         --quiet|-q) quiet=yes
2754         ;;
2755         *)
2756             optname="${opt%%=*}"
2757             optname="${optname#--}"
2758             optname=$(echo "$optname" | sed 's/-/_/g')
2759             if is_in $optname $CMDLINE_SET; then
2760                 eval $optname='$optval'
2761             elif is_in $optname $CMDLINE_APPEND; then
2762                 append $optname "$optval"
2763             else
2764                 die_unknown $opt
2765             fi
2766         ;;
2767     esac
2768 done
2769
2770 for e in $env; do
2771     eval "export $e"
2772 done
2773
2774 disabled logging && logfile=/dev/null
2775
2776 # Die early if licensing-related configure options are incompatible.
2777 die_license_disabled() {
2778     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2779 }
2780
2781 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2782 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2783 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2784
2785 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2786
2787 # Disable all the library-specific components if the library itself
2788 # is disabled, see AVCODEC_LIST and following _LIST variables.
2789
2790 disable_components(){
2791     disabled ${1} && disable $(
2792         eval components="\$$(toupper ${1})_COMPONENTS"
2793         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2794     )
2795 }
2796
2797 map 'disable_components $v' $LIBRARY_LIST
2798
2799 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2800 set >> $logfile
2801
2802 case "$toolchain" in
2803     *-asan)
2804         cc_default="${toolchain%-asan}"
2805         add_cflags  -fsanitize=address
2806         add_ldflags -fsanitize=address
2807     ;;
2808     *-msan)
2809         cc_default="${toolchain%-msan}"
2810         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2811         add_ldflags -fsanitize=memory
2812     ;;
2813     *-tsan)
2814         cc_default="${toolchain%-tsan}"
2815         add_cflags  -fsanitize=thread -pie
2816         add_ldflags -fsanitize=thread -pie
2817         case "$toolchain" in
2818             gcc-tsan)
2819                 add_cflags  -fPIC
2820                 add_ldflags -fPIC
2821                 ;;
2822         esac
2823     ;;
2824     *-usan)
2825         cc_default="${toolchain%-usan}"
2826         add_cflags  -fsanitize=undefined
2827         add_ldflags -fsanitize=undefined
2828         case "$toolchain" in
2829             clang-usan)
2830                 add_cflags -O1
2831                 ;;
2832         esac
2833     ;;
2834     valgrind-*)
2835         target_exec_default="valgrind"
2836         case "$toolchain" in
2837             valgrind-massif)
2838                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2839                 ;;
2840             valgrind-memcheck)
2841                 target_exec_args="--track-origins=yes --leak-check=full"
2842                 ;;
2843         esac
2844     ;;
2845     msvc)
2846         # Check whether the current MSVC version needs the C99 converter.
2847         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2848         # support enough of C99 to build libav. Default to the new
2849         # behaviour if the regexp was unable to match anything, since this
2850         # successfully parses the version number of existing supported
2851         # versions that require the converter (MSVC 2010 and 2012).
2852         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2853         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2854             cc_default="cl"
2855         else
2856             cc_default="c99wrap cl"
2857         fi
2858         ld_default="$source_path/compat/windows/mslink"
2859         nm_default="dumpbin -symbols"
2860         ar_default="lib"
2861         case "$arch" in
2862         arm*)
2863             as_default="armasm"
2864             ;;
2865         esac
2866         target_os_default="win32"
2867         # Use a relative path for TMPDIR. This makes sure all the
2868         # ffconf temp files are written with a relative path, avoiding
2869         # issues with msys/win32 path conversion for MSVC parameters
2870         # such as -Fo<file> or -out:<file>.
2871         TMPDIR=.
2872     ;;
2873     icl)
2874         cc_default="icl"
2875         ld_default="xilink"
2876         nm_default="dumpbin -symbols"
2877         ar_default="xilib"
2878         target_os_default="win32"
2879         TMPDIR=.
2880     ;;
2881     gcov)
2882         add_cflags  -fprofile-arcs -ftest-coverage
2883         add_ldflags -fprofile-arcs -ftest-coverage
2884     ;;
2885     llvm-cov)
2886         add_cflags -fprofile-arcs -ftest-coverage
2887         add_ldflags --coverage
2888     ;;
2889     hardened)
2890         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2891         add_cflags   -fno-strict-overflow -fstack-protector-all
2892         add_ldflags  -Wl,-z,relro -Wl,-z,now
2893     ;;
2894     ?*)
2895         die "Unknown toolchain $toolchain"
2896     ;;
2897 esac
2898
2899 test -n "$cross_prefix" && enable cross_compile
2900
2901 if enabled cross_compile; then
2902     test -n "$arch" && test -n "$target_os" ||
2903         die "Must specify target arch and OS when cross-compiling"
2904 fi
2905
2906 ar_default="${cross_prefix}${ar_default}"
2907 cc_default="${cross_prefix}${cc_default}"
2908 occ_default="${cross_prefix}${occ_default}"
2909 nm_default="${cross_prefix}${nm_default}"
2910 pkg_config_default="${cross_prefix}${pkg_config_default}"
2911 ranlib="${cross_prefix}${ranlib}"
2912 strip="${cross_prefix}${strip}"
2913
2914 sysinclude_default="${sysroot}/usr/include"
2915
2916 set_default arch cc pkg_config sysinclude target_exec target_os
2917 enabled cross_compile || host_cc_default=$cc
2918 set_default host_cc
2919
2920 if ! $pkg_config --version >/dev/null 2>&1; then
2921     warn "$pkg_config not found, library detection may fail."
2922     pkg_config=false
2923 fi
2924
2925 exesuf() {
2926     case $1 in
2927         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2928     esac
2929 }
2930
2931 EXESUF=$(exesuf $target_os)
2932 HOSTEXESUF=$(exesuf $host_os)
2933
2934 # set temporary file name
2935 : ${TMPDIR:=$TEMPDIR}
2936 : ${TMPDIR:=$TMP}
2937 : ${TMPDIR:=/tmp}
2938
2939 if ! check_cmd mktemp -u XXXXXX; then
2940     # simple replacement for missing mktemp
2941     # NOT SAFE FOR GENERAL USE
2942     mktemp(){
2943         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2944     }
2945 fi
2946
2947 tmpfile(){
2948     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2949         (set -C; exec > $tmp) 2>/dev/null ||
2950         die "Unable to create temporary file in $TMPDIR."
2951     append TMPFILES $tmp
2952     eval $1=$tmp
2953 }
2954
2955 trap 'rm -f -- $TMPFILES' EXIT
2956
2957 tmpfile TMPASM .asm
2958 tmpfile TMPC   .c
2959 tmpfile TMPE   $EXESUF
2960 tmpfile TMPH   .h
2961 tmpfile TMPO   .o
2962 tmpfile TMPS   .S
2963 tmpfile TMPSH  .sh
2964 tmpfile TMPV   .ver
2965
2966 unset -f mktemp
2967
2968 chmod +x $TMPE
2969
2970 # make sure we can execute files in $TMPDIR
2971 cat > $TMPSH 2>> $logfile <<EOF
2972 #! /bin/sh
2973 EOF
2974 chmod +x $TMPSH >> $logfile 2>&1
2975 if ! $TMPSH >> $logfile 2>&1; then
2976     cat <<EOF
2977 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2978 variable to another directory and make sure that it is not mounted noexec.
2979 EOF
2980     die "Sanity test failed."
2981 fi
2982
2983 armasm_flags(){
2984     for flag; do
2985         case $flag in
2986             # Filter out MSVC cl.exe options from cflags that shouldn't
2987             # be passed to gas-preprocessor
2988             -M[TD]*)                                            ;;
2989             *)                  echo $flag                      ;;
2990         esac
2991    done
2992 }
2993
2994 ccc_flags(){
2995     for flag; do
2996         case $flag in
2997             -std=c99)           echo -c99                       ;;
2998             -mcpu=*)            echo -arch ${flag#*=}           ;;
2999             -mieee)             echo -ieee                      ;;
3000             -O*|-fast)          echo $flag                      ;;
3001             -fno-math-errno)    echo -assume nomath_errno       ;;
3002             -g)                 echo -g3                        ;;
3003             -Wall)              echo -msg_enable level2         ;;
3004             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3005             -Wl,*)              echo $flag                      ;;
3006             -f*|-W*)                                            ;;
3007             *)                  echo $flag                      ;;
3008         esac
3009    done
3010 }
3011
3012 cparser_flags(){
3013     for flag; do
3014         case $flag in
3015             -Wno-switch)             echo -Wno-switch-enum ;;
3016             -Wno-format-zero-length) ;;
3017             -Wdisabled-optimization) ;;
3018             -Wno-pointer-sign)       echo -Wno-other ;;
3019             *)                       echo $flag ;;
3020         esac
3021     done
3022 }
3023
3024 msvc_common_flags(){
3025     for flag; do
3026         case $flag in
3027             # In addition to specifying certain flags under the compiler
3028             # specific filters, they must be specified here as well or else the
3029             # generic catch all at the bottom will print the original flag.
3030             -Wall)                ;;
3031             -std=c99)             ;;
3032             # Common flags
3033             -fomit-frame-pointer) ;;
3034             -g)                   echo -Z7 ;;
3035             -fno-math-errno)      ;;
3036             -fno-common)          ;;
3037             -fno-signed-zeros)    ;;
3038             -fPIC)                ;;
3039             -mthumb)              ;;
3040             -march=*)             ;;
3041             -lz)                  echo zlib.lib ;;
3042             -lavifil32)           echo vfw32.lib ;;
3043             -lavicap32)           echo vfw32.lib user32.lib ;;
3044             -lx264)               echo libx264.lib ;;
3045             -l*)                  echo ${flag#-l}.lib ;;
3046             -L*)                  echo -libpath:${flag#-L} ;;
3047             *)                    echo $flag ;;
3048         esac
3049     done
3050 }
3051
3052 msvc_flags(){
3053     msvc_common_flags "$@"
3054     for flag; do
3055         case $flag in
3056             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3057                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3058                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3059                                        -wd4273 -wd4554 -wd4701 ;;
3060         esac
3061     done
3062 }
3063
3064 icl_flags(){
3065     msvc_common_flags "$@"
3066     for flag; do
3067         case $flag in
3068             # Despite what Intel's documentation says -Wall, which is supported
3069             # on Windows, does enable remarks so disable them here.
3070             -Wall)                echo $flag -Qdiag-disable:remark ;;
3071             -std=c99)             echo -Qstd=c99 ;;
3072         esac
3073     done
3074 }
3075
3076 pgi_flags(){
3077     for flag; do
3078         case $flag in
3079             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3080             -fomit-frame-pointer) echo -Mnoframe ;;
3081             -g)                   echo -gopt ;;
3082             *)                    echo $flag ;;
3083         esac
3084     done
3085 }
3086
3087 suncc_flags(){
3088     for flag; do
3089         case $flag in
3090             -march=*|-mcpu=*)
3091                 case "${flag#*=}" in
3092                     native)                   echo -xtarget=native       ;;
3093                     v9|niagara)               echo -xarch=sparc          ;;
3094                     ultrasparc)               echo -xarch=sparcvis       ;;
3095                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3096                     i586|pentium)             echo -xchip=pentium        ;;
3097                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3098                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3099                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3100                     pentium4*)          echo -xtarget=pentium4           ;;
3101                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3102                     *-sse3)             echo -xarch=sse3                 ;;
3103                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3104                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3105                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3106                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3107                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3108                     k8|opteron|athlon64|athlon-fx)
3109                                                echo -xarch=sse2a         ;;
3110                     athlon*)                   echo -xarch=pentium_proa  ;;
3111                 esac
3112                 ;;
3113             -std=c99)             echo -xc99              ;;
3114             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3115             -fPIC)                echo -KPIC -xcode=pic32 ;;
3116             -W*,*)                echo $flag              ;;
3117             -f*-*|-W*|-mimpure-text)                      ;;
3118             -shared)              echo -G                 ;;
3119             *)                    echo $flag              ;;
3120         esac
3121     done
3122 }
3123
3124 tms470_flags(){
3125     for flag; do
3126         case $flag in
3127             -march=*|-mcpu=*)
3128                 case "${flag#*=}" in
3129                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3130                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3131                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3132                     armv6*|arm11*)          echo -mv=6   ;;
3133                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3134                                             echo -mv=5e  ;;
3135                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3136                 esac
3137                 ;;
3138             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3139             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3140             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3141             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3142             -msoft-float)   echo --float_support=vfplib       ;;
3143             -O[0-3]|-mf=*)  echo $flag                        ;;
3144             -g)             echo -g -mn                       ;;
3145             -pds=*)         echo $flag                        ;;
3146             -D*|-I*)        echo $flag                        ;;
3147             --gcc|--abi=*)  echo $flag                        ;;
3148             -me)            echo $flag                        ;;
3149         esac
3150     done
3151 }
3152
3153 probe_cc(){
3154     pfx=$1
3155     _cc=$2
3156
3157     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3158     unset _ld_o _ldflags _ld_lib _ld_path
3159     unset _depflags _DEPCMD _DEPFLAGS
3160     _flags_filter=echo
3161
3162     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3163         _type=llvm_gcc
3164         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3165         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3166         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3167         _cflags_speed='-O3'
3168         _cflags_size='-Os'
3169     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3170         _type=gcc
3171         gcc_version=$($_cc --version | head -n1)
3172         gcc_basever=$($_cc -dumpversion)
3173         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3174         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3175         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3176         if ! $_cc -dumpversion | grep -q '^2\.'; then
3177             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3178         fi
3179         _cflags_speed='-O3'
3180         _cflags_size='-Os'
3181     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3182         _type=icc
3183         _ident=$($_cc --version | head -n1)
3184         _depflags='-MMD'
3185         _cflags_speed='-O3'
3186         _cflags_size='-Os'
3187         _cflags_noopt='-O1'
3188     elif $_cc -v 2>&1 | grep -q xlc; then
3189         _type=xlc
3190         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3191         _cflags_speed='-O5'
3192         _cflags_size='-O5 -qcompact'
3193     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3194         _type=ccc
3195         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3196         _DEPFLAGS='-M'
3197         _cflags_speed='-fast'
3198         _cflags_size='-O1'
3199         _flags_filter=ccc_flags
3200     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3201         test -d "$sysroot" || die "No valid sysroot specified."
3202         _type=armcc
3203         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3204         armcc_conf="$PWD/armcc.conf"
3205         $_cc --arm_linux_configure                 \
3206              --arm_linux_config_file="$armcc_conf" \
3207              --configure_sysroot="$sysroot"        \
3208              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3209              die "Error creating armcc configuration file."
3210         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3211         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3212         as_default="${cross_prefix}gcc"
3213         _depflags='-MMD'
3214         _cflags_speed='-O3'
3215         _cflags_size='-Os'
3216     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3217         _type=tms470
3218         _ident=$($_cc -version | head -n1 | tr -s ' ')
3219         _flags='--gcc --abi=eabi -me'
3220         _cc_e='-ppl -fe=$@'
3221         _cc_o='-fe=$@'
3222         _depflags='-ppa -ppd=$(@:.o=.d)'
3223         _cflags_speed='-O3 -mf=5'
3224         _cflags_size='-O3 -mf=2'
3225         _flags_filter=tms470_flags
3226     elif $_cc -v 2>&1 | grep -q clang; then
3227         _type=clang
3228         _ident=$($_cc --version 2>/dev/null | head -n1)
3229         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3230         _cflags_speed='-O3'
3231         _cflags_size='-Os'
3232     elif $_cc -V 2>&1 | grep -q Sun; then
3233         _type=suncc
3234         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3235         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3236         _DEPFLAGS='-xM1 -xc99'
3237         _ldflags='-std=c99'
3238         _cflags_speed='-O5'
3239         _cflags_size='-O5 -xspace'
3240         _flags_filter=suncc_flags
3241     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3242         _type=pathscale
3243         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3244         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3245         _cflags_speed='-O2'
3246         _cflags_size='-Os'
3247         _flags_filter='filter_out -Wdisabled-optimization'
3248     elif $_cc -v 2>&1 | grep -q Open64; then
3249         _type=open64
3250         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3251         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3252         _cflags_speed='-O2'
3253         _cflags_size='-Os'
3254         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3255     elif $_cc -V 2>&1 | grep -q Portland; then
3256         _type=pgi
3257         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3258         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3259         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3260         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3261         _cflags_noopt="-O1"
3262         _flags_filter=pgi_flags
3263     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3264         _type=armasm
3265         _ident=$($_cc | head -n1)
3266         # 4509: "This form of conditional instruction is deprecated"
3267         _flags="-nologo -ignore 4509"
3268         _flags_filter=armasm_flags
3269     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3270         _type=msvc
3271         _ident=$($_cc 2>&1 | head -n1)
3272         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3273         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3274         _cflags_speed="-O2"
3275         _cflags_size="-O1"
3276         if $_cc -nologo- 2>&1 | grep -q Linker; then
3277             _ld_o='-out:$@'
3278         else
3279             _ld_o='-Fe$@'
3280         fi
3281         _cc_o='-Fo$@'
3282         _cc_e='-P -Fi$@'
3283         _flags_filter=msvc_flags
3284         _ld_lib='lib%.a'
3285         _ld_path='-libpath:'
3286         _flags='-nologo'
3287     elif $_cc 2>&1 | grep -q Intel; then
3288         _type=icl
3289         _ident=$($_cc 2>&1 | head -n1)
3290         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3291         # Not only is O3 broken on 13.x+ but it is slower on all previous
3292         # versions (tested) as well.
3293         _cflags_speed="-O2"
3294         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3295         if $_cc 2>&1 | grep -q Linker; then
3296             _ld_o='-out:$@'
3297         else
3298             _ld_o='-Fe$@'
3299         fi
3300         _cc_o='-Fo$@'
3301         _cc_e='-P'
3302         _flags_filter=icl_flags
3303         _ld_lib='lib%.a'
3304         _ld_path='-libpath:'
3305         # -Qdiag-error to make icl error when seeing certain unknown arguments
3306         _flags='-nologo -Qdiag-error:4044,10157'
3307         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3308         # with MSVC which enables it by default.
3309         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3310     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3311         # lld can emulate multiple different linkers; in ms link.exe mode,
3312         # the -? parameter gives the help output which contains an identifyable
3313         # string, while it gives an error in other modes.
3314         _type=lld-link
3315         # The link.exe mode doesn't have a switch for getting the version,
3316         # but we can force it back to gnu mode and get the version from there.
3317         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3318         _ld_o='-out:$@'
3319         _flags_filter=msvc_flags
3320         _ld_lib='lib%.a'
3321         _ld_path='-libpath:'
3322     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3323         _type=cparser
3324         _ident=$($_cc --version | head -n1)
3325         _depflags='-MMD'
3326         _cflags_speed='-O4'
3327         _cflags_size='-O2'
3328         _flags_filter=cparser_flags
3329     fi
3330
3331     eval ${pfx}_type=\$_type
3332     eval ${pfx}_ident=\$_ident
3333 }
3334
3335 set_ccvars(){
3336     eval ${1}_C=\${_cc_c-\${${1}_C}}
3337     eval ${1}_E=\${_cc_e-\${${1}_E}}
3338     eval ${1}_O=\${_cc_o-\${${1}_O}}
3339
3340     if [ -n "$_depflags" ]; then
3341         eval ${1}_DEPFLAGS=\$_depflags
3342     else
3343         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3344         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3345         eval DEP${1}FLAGS=\$_flags
3346     fi
3347 }
3348
3349 probe_cc cc "$cc"
3350 cflags_filter=$_flags_filter
3351 cflags_speed=$_cflags_speed
3352 cflags_size=$_cflags_size
3353 cflags_noopt=$_cflags_noopt
3354 add_cflags $_flags $_cflags
3355 cc_ldflags=$_ldflags
3356 set_ccvars CC
3357
3358 probe_cc hostcc "$host_cc"
3359 host_cflags_filter=$_flags_filter
3360 add_host_cflags  $_flags $_cflags
3361 set_ccvars HOSTCC
3362
3363 test -n "$cc_type" && enable $cc_type ||
3364     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3365
3366 : ${as_default:=$cc}
3367 : ${objcc_default:=$cc}
3368 : ${dep_cc_default:=$cc}
3369 : ${ld_default:=$cc}
3370 : ${host_ld_default:=$host_cc}
3371 set_default ar as objcc dep_cc ld host_ld
3372
3373 probe_cc as "$as"
3374 asflags_filter=$_flags_filter
3375 add_asflags $_flags $_cflags
3376 set_ccvars AS
3377
3378 probe_cc objcc "$objcc"
3379 objcflags_filter=$_flags_filter
3380 add_objcflags $_flags $_cflags
3381 set_ccvars OBJC
3382
3383 probe_cc ld "$ld"
3384 ldflags_filter=$_flags_filter
3385 add_ldflags $_flags $_ldflags
3386 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3387 LD_O=${_ld_o-$LD_O}
3388 LD_LIB=${_ld_lib-$LD_LIB}
3389 LD_PATH=${_ld_path-$LD_PATH}
3390
3391 probe_cc hostld "$host_ld"
3392 host_ldflags_filter=$_flags_filter
3393 add_host_ldflags $_flags $_ldflags
3394 HOSTLD_O=${_ld_o-$HOSTLD_O}
3395
3396 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3397     probe_cc depcc "$dep_cc"
3398     CCDEP=${_DEPCMD:-$DEPCMD}
3399     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3400     DEPCCFLAGS=$_flags
3401 fi
3402
3403 if $ar 2>&1 | grep -q Microsoft; then
3404     arflags="-nologo"
3405     ar_o='-out:$@'
3406 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3407     arflags="rq"
3408     ar_o='$@'
3409 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3410     arflags='-Xany -r -c'
3411     ar_o='$@'
3412 else
3413     arflags="rc"
3414     ar_o='$@'
3415 fi
3416
3417 add_cflags $extra_cflags
3418 add_objcflags $extra_objcflags
3419 add_asflags $extra_cflags
3420
3421 if test -n "$sysroot"; then
3422     case "$cc_type" in
3423         gcc|llvm_gcc|clang)
3424             add_cppflags --sysroot="$sysroot"
3425             add_ldflags --sysroot="$sysroot"
3426         ;;
3427         tms470)
3428             add_cppflags -I"$sysinclude"
3429             add_ldflags  --sysroot="$sysroot"
3430         ;;
3431     esac
3432 fi
3433
3434 if test "$cpu" = host; then
3435     enabled cross_compile &&
3436         die "--cpu=host makes no sense when cross-compiling."
3437
3438     case "$cc_type" in
3439         gcc|llvm_gcc)
3440             check_native(){
3441                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3442                 sed -n "/cc1.*$1=/{
3443                             s/.*$1=\\([^ ]*\\).*/\\1/
3444                             p
3445                             q
3446                         }" $TMPE
3447             }
3448             cpu=$(check_native -march || check_native -mcpu)
3449         ;;
3450     esac
3451
3452     test "${cpu:-host}" = host &&
3453         die "--cpu=host not supported with compiler $cc"
3454 fi
3455
3456 # Deal with common $arch aliases
3457 case "$arch" in
3458     aarch64|arm64)
3459         arch="aarch64"
3460     ;;
3461     arm*)
3462         arch="arm"
3463     ;;
3464     mips*|IP*)
3465         case "$arch" in
3466         *el)
3467             add_cppflags -EL
3468             add_ldflags -EL
3469         ;;
3470         *eb)
3471             add_cppflags -EB
3472             add_ldflags -EB
3473         ;;
3474         esac
3475         arch="mips"
3476     ;;
3477     parisc*|hppa*)
3478         arch="parisc"
3479     ;;
3480     "Power Macintosh"|ppc*|powerpc*)
3481         arch="ppc"
3482     ;;
3483     s390|s390x)
3484         arch="s390"
3485     ;;
3486     sh4|sh)
3487         arch="sh4"
3488     ;;
3489     sun4u|sparc*)
3490         arch="sparc"
3491     ;;
3492     tilegx|tile-gx)
3493         arch="tilegx"
3494     ;;
3495     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3496         arch="x86"
3497     ;;
3498 esac
3499
3500 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3501 enable $arch
3502
3503 # Add processor-specific flags
3504 if enabled aarch64; then
3505
3506     case $cpu in
3507         armv*)
3508             cpuflags="-march=$cpu"
3509         ;;
3510         *)
3511             cpuflags="-mcpu=$cpu"
3512         ;;
3513     esac
3514
3515 elif enabled alpha; then
3516
3517     cpuflags="-mcpu=$cpu"
3518
3519 elif enabled arm; then
3520
3521     check_arm_arch() {
3522         check_cpp_condition stddef.h \
3523             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3524             $cpuflags
3525     }
3526
3527     probe_arm_arch() {
3528         if   check_arm_arch 4;        then echo armv4
3529         elif check_arm_arch 4T;       then echo armv4t
3530         elif check_arm_arch 5;        then echo armv5
3531         elif check_arm_arch 5E;       then echo armv5e
3532         elif check_arm_arch 5T;       then echo armv5t
3533         elif check_arm_arch 5TE;      then echo armv5te
3534         elif check_arm_arch 5TEJ;     then echo armv5te
3535         elif check_arm_arch 6;        then echo armv6
3536         elif check_arm_arch 6J;       then echo armv6j
3537         elif check_arm_arch 6K;       then echo armv6k
3538         elif check_arm_arch 6Z;       then echo armv6z
3539         elif check_arm_arch 6ZK;      then echo armv6zk
3540         elif check_arm_arch 6T2;      then echo armv6t2
3541         elif check_arm_arch 7;        then echo armv7
3542         elif check_arm_arch 7A  7_A;  then echo armv7-a
3543         elif check_arm_arch 7S;       then echo armv7-a
3544         elif check_arm_arch 7R  7_R;  then echo armv7-r
3545         elif check_arm_arch 7M  7_M;  then echo armv7-m
3546         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3547         elif check_arm_arch 8A  8_A;  then echo armv8-a
3548         fi
3549     }
3550
3551     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3552
3553     case $cpu in
3554         armv*)
3555             cpuflags="-march=$cpu"
3556             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3557         ;;
3558         *)
3559             cpuflags="-mcpu=$cpu"
3560             case $cpu in
3561                 cortex-a*)                               subarch=armv7a  ;;
3562                 cortex-r*)                               subarch=armv7r  ;;
3563                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3564                 arm11*)                                  subarch=armv6   ;;
3565                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3566                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3567                 *)                             subarch=$(probe_arm_arch) ;;
3568             esac
3569         ;;
3570     esac
3571
3572     case "$subarch" in
3573         armv5t*)    enable fast_clz                ;;
3574         armv[6-8]*) enable fast_clz fast_unaligned ;;
3575     esac
3576
3577 elif enabled avr32; then
3578
3579     case $cpu in
3580         ap7[02]0[0-2])
3581             subarch="avr32_ap"
3582             cpuflags="-mpart=$cpu"
3583         ;;
3584         ap)
3585             subarch="avr32_ap"
3586             cpuflags="-march=$cpu"
3587         ;;
3588         uc3[ab]*)
3589             subarch="avr32_uc"
3590             cpuflags="-mcpu=$cpu"
3591         ;;
3592         uc)
3593             subarch="avr32_uc"
3594             cpuflags="-march=$cpu"
3595         ;;
3596     esac
3597
3598 elif enabled bfin; then
3599
3600     cpuflags="-mcpu=$cpu"
3601
3602 elif enabled mips; then
3603
3604     cpuflags="-march=$cpu"
3605
3606 elif enabled ppc; then
3607
3608     disable ldbrx
3609
3610     case $(tolower $cpu) in
3611         601|ppc601|powerpc601)
3612             cpuflags="-mcpu=601"
3613             disable altivec
3614         ;;
3615         603*|ppc603*|powerpc603*)
3616             cpuflags="-mcpu=603"
3617             disable altivec
3618         ;;
3619         604*|ppc604*|powerpc604*)
3620             cpuflags="-mcpu=604"
3621             disable altivec
3622         ;;
3623         g3|75*|ppc75*|powerpc75*)
3624             cpuflags="-mcpu=750"
3625             disable altivec
3626         ;;
3627         g4|745*|ppc745*|powerpc745*)
3628             cpuflags="-mcpu=7450"
3629             disable vsx
3630         ;;
3631         74*|ppc74*|powerpc74*)
3632             cpuflags="-mcpu=7400"
3633             disable vsx
3634         ;;
3635         g5|970|ppc970|powerpc970)
3636             cpuflags="-mcpu=970"
3637             disable vsx
3638         ;;
3639         power[3-6]*)
3640             cpuflags="-mcpu=$cpu"
3641             disable vsx
3642         ;;
3643         power[7-8]*)
3644             cpuflags="-mcpu=$cpu"
3645             enable ldbrx
3646         ;;
3647         cell)
3648             cpuflags="-mcpu=cell"
3649             enable ldbrx
3650             disable vsx
3651         ;;
3652         e500mc)
3653             cpuflags="-mcpu=e500mc"
3654             disable altivec
3655         ;;
3656         e500v2)
3657             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3658             disable altivec
3659             disable dcbzl
3660         ;;
3661         e500)
3662             cpuflags="-mcpu=8540 -mhard-float"
3663             disable altivec
3664             disable dcbzl
3665         ;;
3666     esac
3667
3668 elif enabled sparc; then
3669
3670     case $cpu in
3671         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3672             cpuflags="-mcpu=$cpu"
3673         ;;
3674         ultrasparc*|niagara[234])
3675             cpuflags="-mcpu=$cpu"
3676         ;;
3677     esac
3678
3679 elif enabled x86; then
3680
3681     case $cpu in
3682         i[345]86|pentium)
3683             cpuflags="-march=$cpu"
3684             disable i686
3685             disable mmx
3686         ;;
3687         # targets that do NOT support nopl and conditional mov (cmov)
3688         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3689             cpuflags="-march=$cpu"
3690             disable i686
3691         ;;
3692         # targets that do support nopl and conditional mov (cmov)
3693         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3694             cpuflags="-march=$cpu"
3695             enable i686
3696             enable fast_cmov
3697         ;;
3698         # targets that do support conditional mov but on which it's slow
3699         pentium4|pentium4m|prescott|nocona)
3700             cpuflags="-march=$cpu"
3701             enable i686
3702             disable fast_cmov
3703         ;;
3704     esac
3705
3706 fi
3707
3708 if [ "$cpu" != generic ]; then
3709     add_cflags  $cpuflags
3710     add_asflags $cpuflags
3711     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3712 fi
3713
3714 # compiler sanity check
3715 check_exec <<EOF
3716 int main(void){ return 0; }
3717 EOF
3718 if test "$?" != 0; then
3719     echo "$cc is unable to create an executable file."
3720     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3721         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3722         echo "Only do this if you know what cross compiling means."
3723     fi
3724     die "C compiler test failed."
3725 fi
3726
3727 add_cppflags -D_ISOC99_SOURCE
3728
3729 # some compilers silently accept -std=c11, so we also need to check that the
3730 # version macro is defined properly
3731 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3732     add_cflags -std=c11
3733 else
3734     check_cflags -std=c99
3735 fi
3736
3737 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3738 #include <stdlib.h>
3739 EOF
3740 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3741 #include <stdlib.h>
3742 EOF
3743
3744 add_host_cppflags -D_ISOC99_SOURCE
3745 check_host_cflags -std=c99
3746 check_host_cflags -Wall
3747 check_host_cflags -O3
3748
3749 check_64bit(){
3750     arch32=$1
3751     arch64=$2
3752     expr=$3
3753     check_code cc "" "int test[2*($expr) - 1]" &&
3754         subarch=$arch64 || subarch=$arch32
3755 }
3756
3757 case "$arch" in
3758     aarch64|alpha|ia64)
3759         spic=$shared
3760     ;;
3761     mips)
3762         check_64bit mips mips64 '_MIPS_SIM > 1'
3763         spic=$shared
3764     ;;
3765     parisc)
3766         check_64bit parisc parisc64 'sizeof(void *) > 4'
3767         spic=$shared
3768     ;;
3769     ppc)
3770         check_64bit ppc ppc64 'sizeof(void *) > 4'
3771         spic=$shared
3772     ;;
3773     s390)
3774         check_64bit s390 s390x 'sizeof(void *) > 4'
3775         spic=$shared
3776     ;;
3777     sparc)
3778         check_64bit sparc sparc64 'sizeof(void *) > 4'
3779         spic=$shared
3780     ;;
3781     x86)
3782         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3783         if test "$subarch" = "x86_64"; then
3784             spic=$shared
3785         fi
3786     ;;
3787 esac
3788
3789 enable $subarch
3790 enabled spic && enable_weak pic
3791
3792 # OS specific
3793 case $target_os in
3794     aix)
3795         SHFLAGS=-shared
3796         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3797         enabled shared && add_ldflags -Wl,-brtl
3798         ;;
3799     android)
3800         disable symver
3801         enable section_data_rel_ro
3802         SLIB_INSTALL_NAME='$(SLIBNAME)'
3803         SLIB_INSTALL_LINKS=
3804         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3805         ;;
3806     haiku)
3807         prefix_default="/boot/common"
3808         network_extralibs="-lnetwork"
3809         host_libs=
3810         ;;
3811     sunos)
3812         SHFLAGS='-shared -Wl,-h,$$(@F)'
3813         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3814         network_extralibs="-lsocket -lnsl"
3815         # When using suncc to build, the Solaris linker will mark
3816         # an executable with each instruction set encountered by
3817         # the Solaris assembler.  As our libraries contain their own
3818         # guards for processor-specific code, instead suppress
3819         # generation of the HWCAPS ELF section on Solaris x86 only.
3820         enabled_all suncc x86 &&
3821             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3822             add_ldflags -Wl,-M,mapfile
3823         nm_default='nm -P -g'
3824         version_script='-M'
3825         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3826         ;;
3827     netbsd)
3828         disable symver
3829         oss_indev_extralibs="-lossaudio"
3830         oss_outdev_extralibs="-lossaudio"
3831         ;;
3832     openbsd|bitrig)
3833         disable symver
3834         SHFLAGS='-shared'
3835         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3836         SLIB_INSTALL_LINKS=
3837         oss_indev_extralibs="-lossaudio"
3838         oss_outdev_extralibs="-lossaudio"
3839         ;;
3840     dragonfly)
3841         disable symver
3842         ;;
3843     freebsd)
3844         ;;
3845     bsd/os)
3846         add_extralibs -lpoll -lgnugetopt
3847         ;;
3848     darwin)
3849         enabled ppc && add_asflags -force_cpusubtype_ALL
3850         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3851         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3852         add_ldflags -Wl,-dynamic,-search_paths_first
3853         SLIBSUF=".dylib"
3854         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3855         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3856         objformat="macho"
3857         enabled x86_64 && objformat="macho64"
3858         enabled_any pic shared ||
3859             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3860         check_header dispatch/dispatch.h &&
3861             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3862         ;;
3863     msys*)
3864         die "Native MSYS builds are discouraged, please use the MINGW environment."
3865         ;;
3866     mingw32*|mingw64*)
3867         if test $target_os = "mingw32ce"; then
3868             disable network
3869         else
3870             target_os=mingw32
3871         fi
3872         LIBTARGET=i386
3873         if enabled x86_64; then
3874             LIBTARGET="i386:x86-64"
3875         elif enabled arm; then
3876             LIBTARGET=arm-wince
3877         fi
3878         check_ldflags -Wl,--nxcompat
3879         check_ldflags -Wl,--dynamicbase
3880         shlibdir_default="$bindir_default"
3881         SLIBPREF=""
3882         SLIBSUF=".dll"
3883         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3884         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3885         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3886         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3887         SLIB_INSTALL_LINKS=
3888         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3889         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3890         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3891         objformat="win32"
3892         dlltool="${cross_prefix}dlltool"
3893         ranlib=:
3894         enable dos_paths
3895         ;;
3896     win32|win64)
3897         disable symver
3898         if enabled shared; then
3899             # Link to the import library instead of the normal static library
3900             # for shared libs.
3901             LD_LIB='%.lib'
3902             # Cannot build both shared and static libs with MSVC or icl.
3903             disable static
3904         fi
3905         shlibdir_default="$bindir_default"
3906         SLIBPREF=""
3907         SLIBSUF=".dll"
3908         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3909         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3910         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3911         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3912         SLIB_INSTALL_LINKS=
3913         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3914         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3915         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3916         objformat="win32"
3917         ranlib=:
3918         enable dos_paths
3919         ;;
3920     cygwin*)
3921         target_os=cygwin
3922         shlibdir_default="$bindir_default"
3923         SLIBPREF="cyg"
3924         SLIBSUF=".dll"
3925         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3926         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3927         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3928         SLIB_INSTALL_LINKS=
3929         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3930         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3931         objformat="win32"
3932         enable dos_paths
3933         ;;
3934     *-dos|freedos|opendos)
3935         network_extralibs="-lsocket"
3936         objformat="coff"
3937         enable dos_paths
3938         add_cppflags -U__STRICT_ANSI__
3939         ;;
3940     linux)
3941         enable dv1394
3942         enable section_data_rel_ro
3943         ;;
3944     irix*)
3945         target_os=irix
3946         ranlib="echo ignoring ranlib"
3947         ;;
3948     os/2*)
3949         ln_s="cp -f"
3950         objformat="aout"
3951         add_cppflags -D_GNU_SOURCE
3952         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3953         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3954         LIBSUF="_s.a"
3955         SLIBPREF=""
3956         SLIBSUF=".dll"
3957         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3958         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3959         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3960             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3961             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3962             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3963             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3964         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3965             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3966         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3967         enable dos_paths
3968         ;;
3969     gnu/kfreebsd)
3970         add_cppflags -D_BSD_SOURCE
3971         ;;
3972     gnu)
3973         ;;
3974     qnx)
3975         add_cppflags -D_QNX_SOURCE
3976         network_extralibs="-lsocket"
3977         ;;
3978     symbian)
3979         SLIBSUF=".dll"
3980         enable dos_paths
3981         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3982         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3983         add_ldflags -Wl,--target1-abs,--no-undefined \
3984                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3985                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3986         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3987                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3988                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3989         ;;
3990     osf1)
3991         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3992         ;;
3993     minix)
3994         ;;
3995     plan9)
3996         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3997                      -D_REENTRANT_SOURCE        \
3998                      -D_RESEARCH_SOURCE         \
3999                      -DFD_SETSIZE=96            \
4000                      -DHAVE_SOCK_OPTS
4001         add_compat strtod.o strtod=avpriv_strtod
4002         network_extralibs='-lbsd'
4003         exeobjs=compat/plan9/main.o
4004         cp_f='cp'
4005         ;;
4006     none)
4007         ;;
4008     *)
4009         die "Unknown OS '$target_os'."
4010         ;;
4011 esac
4012
4013 # determine libc flavour
4014
4015 probe_libc(){
4016     pfx=$1
4017     pfx_no_=${pfx%_}
4018     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4019     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4020         eval ${pfx}libc_type=uclibc
4021         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4022     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4023         eval ${pfx}libc_type=glibc
4024         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4025     # MinGW headers can be installed on Cygwin, so check for newlib first.
4026     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4027         eval ${pfx}libc_type=newlib
4028         add_${pfx}cppflags -U__STRICT_ANSI__
4029     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4030     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4031         eval ${pfx}libc_type=mingw64
4032         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4033         eval test \$${pfx_no_}cc_type = "gcc" &&
4034             add_${pfx}cppflags -D__printf__=__gnu_printf__
4035     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4036          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4037         eval ${pfx}libc_type=mingw32
4038         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4039             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4040             die "ERROR: MinGW32 runtime version must be >= 3.15."
4041         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4042         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4043             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4044         eval test \$${pfx_no_}cc_type = "gcc" &&
4045             add_${pfx}cppflags -D__printf__=__gnu_printf__
4046     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4047         eval ${pfx}libc_type=msvcrt
4048         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4049             if [ "$pfx" = host_ ]; then
4050                 add_host_cppflags -Dsnprintf=_snprintf
4051             else
4052                 add_compat strtod.o strtod=avpriv_strtod
4053                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4054                                              _snprintf=avpriv_snprintf  \
4055                                              vsnprintf=avpriv_vsnprintf
4056             fi
4057         fi
4058         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4059         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4060         # 0x601 by default unless something else is set by the user.
4061         # This can easily lead to us detecting functions only present
4062         # in such new versions and producing binaries requiring windows 7.0.
4063         # Therefore explicitly set the default to XP unless the user has
4064         # set something else on the command line.
4065         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4066         # family. For these cases, configure is free to use any functions
4067         # found in the SDK headers by default. (Alternatively, we could force
4068         # _WIN32_WINNT to 0x0602 in that case.)
4069         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4070             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4071 #ifdef WINAPI_FAMILY
4072 #include <winapifamily.h>
4073 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4074 #error not desktop
4075 #endif
4076 #endif
4077 EOF
4078         if [ "$pfx" = "" ]; then
4079             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4080         fi
4081     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4082         eval ${pfx}libc_type=klibc
4083     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4084         eval ${pfx}libc_type=bionic
4085     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4086         eval ${pfx}libc_type=solaris
4087         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4088     else
4089         eval ${pfx}libc_type=default
4090         add_${pfx}cppflags -D_DEFAULT_SOURCE
4091     fi
4092 }
4093
4094 probe_libc
4095 test -n "$libc_type" && enable libc_$libc_type
4096 probe_libc host_
4097 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4098
4099 case $libc_type in
4100     bionic)
4101         add_compat strtod.o strtod=avpriv_strtod
4102         ;;
4103 esac
4104
4105 # hacks for compiler/libc/os combinations
4106
4107 if enabled_all tms470 libc_glibc; then
4108     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4109     add_cppflags -D__USER_LABEL_PREFIX__=
4110     add_cppflags -D__builtin_memset=memset
4111     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4112     add_cflags   -pds=48    # incompatible redefinition of macro
4113 fi
4114
4115 if enabled_all ccc libc_glibc; then
4116     add_ldflags -Wl,-z,now  # calls to libots crash without this
4117 fi
4118
4119 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4120     add_cppflags '-I\$(SRC_PATH)/compat/float'
4121
4122 esc(){
4123     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4124 }
4125
4126 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4127
4128 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4129
4130 set_default $PATHS_LIST
4131 set_default nm
4132
4133 # we need to build at least one lib type
4134 if ! enabled_any static shared; then
4135     cat <<EOF
4136 At least one library type must be built.
4137 Specify --enable-static to build the static libraries or --enable-shared to
4138 build the shared libraries as well. To only build the shared libraries specify
4139 --disable-static in addition to --enable-shared.
4140 EOF
4141     exit 1
4142 fi
4143
4144 disabled optimizations || check_cflags -fomit-frame-pointer
4145
4146 enable_weak_pic() {
4147     disabled pic && return
4148     enable pic
4149     add_cppflags -DPIC
4150     case "$target_os" in
4151     mingw*|cygwin*)
4152         ;;
4153     *)
4154         add_cflags -fPIC
4155         ;;
4156     esac
4157     add_asflags  -fPIC
4158 }
4159
4160 enabled pic && enable_weak_pic
4161
4162 check_cc <<EOF || die "Symbol mangling check failed."
4163 int ff_extern;
4164 EOF
4165 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4166 extern_prefix=${sym%%ff_extern*}
4167
4168 check_cc <<EOF && enable_weak inline_asm
4169 void foo(void) { __asm__ volatile ("" ::); }
4170 EOF
4171
4172 _restrict=
4173 for restrict_keyword in restrict __restrict__ __restrict; do
4174     check_cc <<EOF && _restrict=$restrict_keyword && break
4175 void foo(char * $restrict_keyword p);
4176 EOF
4177 done
4178
4179 check_cc <<EOF && enable pragma_deprecated
4180 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4181 EOF
4182
4183 check_cc <<EOF && enable attribute_packed
4184 struct { int x; } __attribute__((packed)) x;
4185 EOF
4186
4187 check_cc <<EOF && enable attribute_may_alias
4188 union { int x; } __attribute__((may_alias)) x;
4189 EOF
4190
4191 check_cc <<EOF || die "endian test failed"
4192 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4193 EOF
4194 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4195
4196 check_gas() {
4197     log "check_gas using '$as' as AS"
4198     # :vararg is used on aarch64, arm and ppc altivec
4199     check_as <<EOF || return 1
4200 .macro m n, y:vararg=0
4201 \n: .int \y
4202 .endm
4203 m x
4204 EOF
4205     # .altmacro is only used in arm asm
4206     ! enabled arm || check_as <<EOF || return 1
4207 .altmacro
4208 EOF
4209     enable gnu_as
4210     return 0
4211 }
4212
4213 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4214     nogas=:
4215     enabled_any arm aarch64 && nogas=die
4216     enabled_all ppc altivec && nogas=warn
4217     as_noop=-v
4218
4219     case $as_type in
4220         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4221         gcc)  gaspp_as_type=gas ;;
4222         *)    gaspp_as_type=$as_type ;;
4223     esac
4224
4225     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4226
4227     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4228         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4229
4230     if ! check_gas ; then
4231         as=${gas:=$as}
4232         check_gas || \
4233             $nogas "GNU assembler not found, install/update gas-preprocessor"
4234     fi
4235
4236     check_as <<EOF && enable as_func
4237 .func test
4238 .endfunc
4239 EOF
4240 fi
4241
4242 check_inline_asm inline_asm_labels '"1:\n"'
4243
4244 if enabled aarch64; then
4245     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4246     # internal assembler in clang 3.3 does not support this instruction
4247     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4248     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4249
4250     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4251
4252 elif enabled alpha; then
4253
4254     check_cflags -mieee
4255
4256 elif enabled arm; then
4257
4258     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4259     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4260     enabled thumb && check_cflags -mthumb || check_cflags -marm
4261
4262     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4263         enable vfp_args
4264     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4265         enable vfp_args
4266     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4267         case "${cross_prefix:-$cc}" in
4268             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4269             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4270 __asm__ (".eabi_attribute 28, 1");
4271 int main(void) { return 0; }
4272 EOF
4273         esac
4274         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4275     fi
4276
4277     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4278     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4279     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4280     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4281     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4282     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4283
4284     [ $target_os = linux ] || [ $target_os = android ] ||
4285         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4286             $ARCH_EXT_LIST_ARM
4287
4288     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4289
4290     check_as <<EOF && enable as_dn_directive
4291 ra .dn d0.i16
4292 .unreq ra
4293 EOF
4294     check_as <<EOF && enable as_fpu_directive
4295 .fpu neon
4296 EOF
4297
4298     # llvm's integrated assembler supports .object_arch from llvm 3.5
4299     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4300 .object_arch armv4
4301 EOF
4302
4303     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4304
4305 elif enabled mips; then
4306
4307     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4308
4309     # make sure that only an instruction set is enabled
4310     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4311
4312     if enabled mips64; then
4313         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4314             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4315                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4316     else
4317         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4318             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4319                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4320     fi
4321
4322 elif enabled parisc; then
4323
4324     if enabled gcc; then
4325         case $($cc -dumpversion) in
4326             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4327         esac
4328     fi
4329
4330 elif enabled ppc; then
4331
4332     enable local_aligned_8 local_aligned_16 local_aligned_32
4333
4334     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4335     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4336     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4337     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4338
4339     # AltiVec flags: The FSF version of GCC differs from the Apple version
4340     if enabled altivec; then
4341         check_cflags -maltivec -mabi=altivec &&
4342         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4343         check_cflags -faltivec
4344
4345         # check if our compiler supports Motorola AltiVec C API
4346         check_cc <<EOF || disable altivec
4347 $inc_altivec_h
4348 int main(void) {
4349     vector signed int v1 = (vector signed int) { 0 };
4350     vector signed int v2 = (vector signed int) { 1 };
4351     v1 = vec_add(v1, v2);
4352     return 0;
4353 }
4354 EOF
4355
4356         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4357     fi
4358
4359     if enabled vsx; then
4360         check_cflags -mvsx &&
4361         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4362     fi
4363
4364     if enabled power8; then
4365         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4366     fi
4367
4368 elif enabled x86; then
4369
4370     check_builtin rdtsc    intrin.h   "__rdtsc()"
4371     check_builtin mm_empty mmintrin.h "_mm_empty()"
4372
4373     enable local_aligned_8 local_aligned_16 local_aligned_32
4374
4375     # check whether EBP is available on x86
4376     # As 'i' is stored on the stack, this program will crash
4377     # if the base pointer is used to access it because the
4378     # base pointer is cleared in the inline assembly code.
4379     check_exec_crash <<EOF && enable ebp_available
4380 volatile int i=0;
4381 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4382 return i;
4383 EOF
4384
4385     # check whether EBX is available on x86
4386     check_inline_asm ebx_available '""::"b"(0)' &&
4387         check_inline_asm ebx_available '"":::"%ebx"'
4388
4389     # check whether xmm clobbers are supported
4390     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4391
4392     # check whether binutils is new enough to compile SSSE3/MMXEXT
4393     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4394     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4395
4396     if ! disabled_any asm mmx yasm; then
4397         if check_cmd $yasmexe --version; then
4398             enabled x86_64 && yasm_extra="-m amd64"
4399             yasm_debug="-g dwarf2"
4400         elif check_cmd nasm -v; then
4401             yasmexe=nasm
4402             yasm_debug="-g -F dwarf"
4403             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4404         fi
4405
4406         YASMFLAGS="-f $objformat $yasm_extra"
4407         enabled pic               && append YASMFLAGS "-DPIC"
4408         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4409         case "$objformat" in
4410             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4411         esac
4412
4413         check_yasm "movbe ecx, [5]" && enable yasm ||
4414             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4415         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4416         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4417         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4418         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4419         check_yasm "CPU amdnop" || disable cpunop
4420     fi
4421
4422     case "$cpu" in
4423         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4424             disable fast_clz
4425         ;;
4426     esac
4427
4428 fi
4429
4430 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4431
4432 check_ldflags -Wl,--as-needed
4433
4434 if check_func dlopen; then
4435     ldl=
4436 elif check_func dlopen -ldl; then
4437     ldl=-ldl
4438 fi
4439
4440 if ! disabled network; then
4441     check_func getaddrinfo $network_extralibs
4442     check_func inet_aton $network_extralibs
4443
4444     check_type netdb.h "struct addrinfo"
4445     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4446     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4447     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4448     check_type poll.h "struct pollfd"
4449     check_type netinet/sctp.h "struct sctp_event_subscribe"
4450     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4451     check_type netinet/in.h "struct sockaddr_in6"
4452     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4453     check_type "sys/types.h sys/socket.h" socklen_t
4454
4455     # Prefer arpa/inet.h over winsock2
4456     if check_header arpa/inet.h ; then
4457         check_func closesocket
4458     elif check_header winsock2.h ; then
4459         check_func_headers winsock2.h closesocket -lws2 &&
4460             network_extralibs="-lws2" ||
4461         { check_func_headers winsock2.h closesocket -lws2_32 &&
4462             network_extralibs="-lws2_32"; } || disable winsock2_h network
4463         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4464
4465         check_type ws2tcpip.h socklen_t
4466         check_type ws2tcpip.h "struct addrinfo"
4467         check_type ws2tcpip.h "struct group_source_req"
4468         check_type ws2tcpip.h "struct ip_mreq_source"
4469         check_type ws2tcpip.h "struct ipv6_mreq"
4470         check_type winsock2.h "struct pollfd"
4471         check_struct winsock2.h "struct sockaddr" sa_len
4472         check_type ws2tcpip.h "struct sockaddr_in6"
4473         check_type ws2tcpip.h "struct sockaddr_storage"
4474     else
4475         disable network
4476     fi
4477 fi
4478
4479 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4480 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4481 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4482 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4483
4484 case "$custom_allocator" in
4485     jemalloc)
4486         # jemalloc by default does not use a prefix
4487         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4488     ;;
4489     tcmalloc)
4490         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4491         malloc_prefix=tc_
4492     ;;
4493 esac
4494
4495 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4496 check_func  ${malloc_prefix}memalign            && enable memalign
4497 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4498
4499 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4500     check_func_headers time.h clock_gettime ||
4501         { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
4502
4503 check_func  fcntl
4504 check_func  fork
4505 check_func  gethrtime
4506 check_func  getopt
4507 check_func  getrusage
4508 check_func  gettimeofday
4509 check_func  gmtime_r
4510 check_func  isatty
4511 check_func  localtime_r
4512 check_func  mach_absolute_time
4513 check_func  mkstemp
4514 check_func  mmap
4515 check_func  mprotect
4516 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4517 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4518 check_func  sched_getaffinity
4519 check_func  setrlimit
4520 check_func  strerror_r
4521 check_func  sysconf
4522 check_func  sysctl
4523 check_func  usleep
4524
4525 check_func_headers io.h setmode
4526 check_func_headers stdlib.h getenv
4527
4528 check_func_headers windows.h CoTaskMemFree -lole32
4529 check_func_headers windows.h GetProcessAffinityMask
4530 check_func_headers windows.h GetProcessTimes
4531 check_func_headers windows.h GetSystemTimeAsFileTime
4532 check_func_headers windows.h LoadLibrary
4533 check_func_headers windows.h MapViewOfFile
4534 check_func_headers windows.h SetConsoleTextAttribute
4535 check_func_headers windows.h Sleep
4536 check_func_headers windows.h VirtualAlloc
4537 check_struct windows.h "CONDITION_VARIABLE" Ptr
4538
4539 check_header direct.h
4540 check_header dlfcn.h
4541 check_header d3d11.h
4542 check_header dxva.h
4543 check_header dxva2api.h
4544 check_header io.h
4545 check_header mach/mach_time.h
4546 check_header malloc.h
4547 check_header poll.h
4548 check_header sys/mman.h
4549 check_header sys/param.h
4550 check_header sys/resource.h
4551 check_header sys/select.h
4552 check_header sys/time.h
4553 check_header sys/un.h
4554 check_header unistd.h
4555 check_header valgrind/valgrind.h
4556 check_header vdpau/vdpau.h
4557 check_header vdpau/vdpau_x11.h
4558 check_header VideoDecodeAcceleration/VDADecoder.h
4559 check_header windows.h
4560 check_header X11/extensions/XvMClib.h
4561
4562 # it seems there are versions of clang in some distros that try to use the
4563 # gcc headers, which explodes for stdatomic
4564 # so we also check that atomics actually work here
4565 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4566
4567 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4568 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4569 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4570
4571 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4572
4573 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4574 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4575 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4576
4577 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4578 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4579 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4580 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4581 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4582
4583 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4584
4585 if ! disabled w32threads && ! enabled pthreads; then
4586     check_func_headers "windows.h process.h" _beginthreadex &&
4587         enable w32threads || disable w32threads
4588 fi
4589
4590 # check for some common methods of building with pthread support
4591 # do this before the optional library checks as some of them require pthreads
4592 if ! disabled pthreads && ! enabled w32threads; then
4593     enable pthreads
4594     if check_func pthread_join -pthread; then
4595         add_cflags -pthread
4596         add_extralibs -pthread
4597     elif check_func pthread_join -pthreads; then
4598         add_cflags -pthreads
4599         add_extralibs -pthreads
4600     elif check_func pthread_join -lpthreadGC2; then
4601         add_extralibs -lpthreadGC2
4602     elif check_lib pthread.h pthread_join -lpthread; then
4603         :
4604     elif ! check_func pthread_join; then
4605         disable pthreads
4606     fi
4607 fi
4608
4609 enabled pthreads &&
4610     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4611
4612 disabled  zlib || check_lib  zlib.h      zlibVersion -lz   || disable  zlib
4613 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4614
4615 check_lib math.h sin -lm && LIBM="-lm"
4616
4617 atan2f_args=2
4618 ldexpf_args=2
4619 powf_args=2
4620
4621 for func in $MATH_FUNCS; do
4622     eval check_mathfunc $func \${${func}_args:-1}
4623 done
4624
4625 # these are off by default, so fail if requested and not available
4626 enabled avisynth          && { check_lib "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4627                                check_lib "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4628                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4629 enabled cuda              && check_lib cuda.h cuInit -lcuda
4630 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4631 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4632 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4633 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4634 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4635 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4636 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4637 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4638 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4639                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4640                                done || die "ERROR: libgsm not found"; }
4641 enabled libhdcd           && require_pkg_config libhdcd "hdcd/hdcd_simple.h" hdcd_new
4642 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4643 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4644 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4645 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4646 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4647 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4648 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4649 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4650 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4651 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4652                                require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4653 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4654 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4655 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4656 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4657 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4658 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4659 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4660 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4661 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4662 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4663 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4664 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4665     enabled libvpx_vp8_decoder && {
4666         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4667             disable libvpx_vp8_decoder;
4668     }
4669     enabled libvpx_vp8_encoder && {
4670         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4671             disable libvpx_vp8_encoder;
4672     }
4673     enabled libvpx_vp9_decoder && {
4674         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4675             disable libvpx_vp9_decoder;
4676     }
4677     enabled libvpx_vp9_encoder && {
4678         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4679             disable libvpx_vp9_encoder;
4680     }
4681     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4682         die "libvpx enabled but no supported decoders found"
4683     fi
4684 }
4685 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4686 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4687 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4688                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4689                                die "ERROR: libx264 version must be >= 0.118."; } &&
4690                              { check_cpp_condition x264.h "X264_MPEG2" &&
4691                                enable libx262; }
4692 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4693                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4694                                die "ERROR: libx265 version must be >= 57."; }
4695 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4696 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4697 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4698                                 { ! enabled cross_compile && {
4699                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4700                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4701                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4702                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4703                                die "ERROR: mmal not found"; }
4704 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
4705 enabled omx_rpi && enable omx
4706 enabled omx               && { check_header OMX_Core.h ||
4707                                 { ! enabled cross_compile && enabled omx_rpi && {
4708                                     add_cflags -isystem/opt/vc/include/IL ; }
4709                                 check_header OMX_Core.h ; } ||
4710                                die "ERROR: OpenMAX IL headers not found"; }
4711 enabled openssl           && { { check_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
4712                                  check_pkg_config openssl openssl/ssl.h SSL_library_init; } && {
4713                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4714                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4715                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4716                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4717                                die "ERROR: openssl not found"; }
4718
4719 if enabled gnutls; then
4720     { check_lib gmp.h mpz_export -lgmp && enable gmp; } ||
4721     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4722 fi
4723
4724 # libdc1394 check
4725 if enabled libdc1394; then
4726     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4727         enable libdc1394_2; } ||
4728     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4729         enable libdc1394_1; } ||
4730     die "ERROR: No version of libdc1394 found "
4731 fi
4732
4733 if enabled nvenc; then
4734     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4735     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4736         die "ERROR: NVENC API version 5 or older is not supported"
4737 fi
4738
4739 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4740     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4741     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4742     enable sdl
4743 fi
4744
4745 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4746 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4747
4748 check_header linux/fb.h
4749 check_header linux/videodev2.h
4750 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4751
4752 check_header AVFoundation/AVFoundation.h &&
4753     check_objcflags -fobjc-arc &&
4754     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4755     disable AVFoundation_AVFoundation_h
4756
4757 check_header sys/videoio.h
4758
4759 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4760 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4761 # w32api 3.12 had it defined wrong
4762 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4763
4764 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4765 { check_header dev/bktr/ioctl_meteor.h &&
4766   check_header dev/bktr/ioctl_bt848.h; } ||
4767 { check_header machine/ioctl_meteor.h &&
4768   check_header machine/ioctl_bt848.h; } ||
4769 { check_header dev/video/meteor/ioctl_meteor.h &&
4770   check_header dev/video/bktr/ioctl_bt848.h; } ||
4771 check_header dev/ic/bt8xx.h
4772
4773 check_header sndio.h
4774 check_header sys/soundcard.h
4775 check_header soundcard.h
4776
4777 enabled_any alsa_indev alsa_outdev &&
4778     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
4779
4780 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
4781     check_func jack_port_get_latency_range -ljack
4782
4783 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
4784
4785 if enabled libcdio; then
4786     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4787     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4788     die "ERROR: No usable libcdio/cdparanoia found"
4789 fi
4790
4791 if enabled libxcb; then
4792     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4793         enabled libxcb && die "ERROR: libxcb not found";
4794     } && enable libxcb
4795
4796     disabled libxcb_shm ||
4797         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4798             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4799         } && check_header sys/shm.h && enable libxcb_shm
4800
4801     disabled libxcb_xfixes ||
4802         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4803             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4804         } && enable libxcb_xfixes
4805
4806     add_cflags "$xcb_shape_cflags $xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4807     add_extralibs "$xcb_shape_libs $xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4808 fi
4809
4810 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4811
4812 enabled vaapi &&
4813     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4814     disable vaapi
4815
4816 enabled vaapi &&
4817     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4818     enable vaapi_drm
4819
4820 enabled vdpau &&
4821     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4822     disable vdpau
4823
4824 enabled_any vaapi vdpau && check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4825
4826 enabled vaapi && enabled xlib &&
4827     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4828     enable vaapi_x11
4829
4830 enabled vdpau && enabled xlib &&
4831     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4832     enable vdpau_x11
4833
4834 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4835
4836 # add some useful compiler flags if supported
4837 check_cflags -Wdeclaration-after-statement
4838 check_cflags -Wall
4839 check_cflags -Wdisabled-optimization
4840 check_cflags -Wpointer-arith
4841 check_cflags -Wredundant-decls
4842 check_cflags -Wwrite-strings
4843 check_cflags -Wtype-limits
4844 check_cflags -Wundef
4845 check_cflags -Wmissing-prototypes
4846 check_cflags -Wstrict-prototypes
4847 enabled extra_warnings && check_cflags -Winline
4848 enabled extra_warnings && check_cflags -Wcast-qual
4849
4850 check_disable_warning(){
4851     warning_flag=-W${1#-Wno-}
4852     test_cflags $warning_flag && add_cflags $1
4853 }
4854
4855 check_disable_warning -Wno-parentheses
4856 check_disable_warning -Wno-switch
4857 check_disable_warning -Wno-format-zero-length
4858 check_disable_warning -Wno-pointer-sign
4859
4860 # add some linker flags
4861 check_ldflags -Wl,--warn-common
4862 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4863 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4864 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4865
4866 # add some strip flags
4867 # -wN '..@*' is more selective than -x, but not available everywhere.
4868 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4869
4870 enabled neon_clobber_test &&
4871     check_ldflags -Wl,--wrap,avcodec_open2              \
4872                   -Wl,--wrap,avcodec_decode_audio4      \
4873                   -Wl,--wrap,avcodec_decode_video2      \
4874                   -Wl,--wrap,avcodec_decode_subtitle2   \
4875                   -Wl,--wrap,avcodec_encode_audio2      \
4876                   -Wl,--wrap,avcodec_encode_video2      \
4877                   -Wl,--wrap,avcodec_encode_subtitle    \
4878                   -Wl,--wrap,avcodec_send_packet        \
4879                   -Wl,--wrap,avcodec_receive_packet     \
4880                   -Wl,--wrap,avcodec_send_frame         \
4881                   -Wl,--wrap,avcodec_receive_frame      \
4882                   -Wl,--wrap,avresample_convert ||
4883     disable neon_clobber_test
4884
4885 enabled xmm_clobber_test &&
4886     check_ldflags -Wl,--wrap,avcodec_open2              \
4887                   -Wl,--wrap,avcodec_decode_audio4      \
4888                   -Wl,--wrap,avcodec_decode_video2      \
4889                   -Wl,--wrap,avcodec_decode_subtitle2   \
4890                   -Wl,--wrap,avcodec_encode_audio2      \
4891                   -Wl,--wrap,avcodec_encode_video2      \
4892                   -Wl,--wrap,avcodec_encode_subtitle    \
4893                   -Wl,--wrap,avcodec_send_packet        \
4894                   -Wl,--wrap,avcodec_receive_packet     \
4895                   -Wl,--wrap,avcodec_send_frame         \
4896                   -Wl,--wrap,avcodec_receive_frame      \
4897                   -Wl,--wrap,avresample_convert         \
4898                   -Wl,--wrap,sws_scale ||
4899     disable xmm_clobber_test
4900
4901 check_ld <<EOF && enable proper_dce
4902 extern const int array[512];
4903 static inline int func(void) { return array[0]; }
4904 int main(void) { return 0; }
4905 EOF
4906
4907 if enabled proper_dce; then
4908     echo "X { local: *; };" > $TMPV
4909     if test_ldflags -Wl,${version_script},$TMPV; then
4910         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
4911         check_cc <<EOF && enable symver_asm_label
4912 void ff_foo(void) __asm__ ("av_foo@VERSION");
4913 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4914 EOF
4915         check_cc <<EOF && enable symver_gnu_asm
4916 __asm__(".symver ff_foo,av_foo@VERSION");
4917 void ff_foo(void) {}
4918 EOF
4919     fi
4920 fi
4921
4922 if [ -z "$optflags" ]; then
4923     if enabled small; then
4924         optflags=$cflags_size
4925     elif enabled optimizations; then
4926         optflags=$cflags_speed
4927     else
4928         optflags=$cflags_noopt
4929     fi
4930 fi
4931
4932 check_optflags(){
4933     check_cflags "$@"
4934     enabled lto && check_ldflags "$@"
4935 }
4936
4937
4938 if enabled lto; then
4939     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4940     check_cflags  -flto
4941     check_ldflags -flto $cpuflags
4942 fi
4943
4944 check_optflags $optflags
4945 check_optflags -fno-math-errno
4946 check_optflags -fno-signed-zeros
4947
4948 if enabled icc; then
4949     # Just warnings, no remarks
4950     check_cflags -w1
4951     # -wd: Disable following warnings
4952     # 144, 167, 556: -Wno-pointer-sign
4953     # 1292: attribute "foo" ignored
4954     # 1419: external declaration in primary source file
4955     # 10006: ignoring unknown option -fno-signed-zeros
4956     # 10148: ignoring unknown option -Wno-parentheses
4957     # 10156: ignoring option '-W'; no argument required
4958     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4959     # 11030: Warning unknown option --as-needed
4960     # 10156: ignoring option '-export'; no argument required
4961     check_ldflags -wd10156,11030
4962     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4963     enable ebp_available
4964     if enabled x86_32; then
4965         icc_version=$($cc -dumpversion)
4966         test ${icc_version%%.*} -ge 11 &&
4967             check_cflags -falign-stack=maintain-16-byte ||
4968             disable aligned_stack
4969     fi
4970 elif enabled ccc; then
4971     # disable some annoying warnings
4972     add_cflags -msg_disable bitnotint
4973     add_cflags -msg_disable mixfuncvoid
4974     add_cflags -msg_disable nonstandcast
4975     add_cflags -msg_disable unsupieee
4976 elif enabled gcc; then
4977     check_optflags -fno-tree-vectorize
4978     check_cflags -Werror=implicit-function-declaration
4979     check_cflags -Werror=missing-prototypes
4980     check_cflags -Werror=return-type
4981     check_cflags -Werror=declaration-after-statement
4982     check_cflags -Werror=vla
4983     check_cflags -Werror=format-security
4984     check_cflags -fdiagnostics-color=auto
4985     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4986 elif enabled llvm_gcc; then
4987     check_cflags -mllvm -stack-alignment=16
4988 elif enabled clang; then
4989     check_cflags -mllvm -stack-alignment=16
4990     check_cflags -Qunused-arguments
4991     check_cflags -Werror=implicit-function-declaration
4992     check_cflags -Werror=missing-prototypes
4993     check_cflags -Werror=return-type
4994 elif enabled cparser; then
4995     add_cflags -Wno-missing-variable-declarations
4996     add_cflags -Wno-empty-statement
4997 elif enabled armcc; then
4998     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4999     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5000     # 2523: use of inline assembly is deprecated
5001     add_cflags -W${armcc_opt},--diag_suppress=2523
5002     add_cflags -W${armcc_opt},--diag_suppress=1207
5003     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5004     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5005     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5006     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5007 elif enabled tms470; then
5008     add_cflags -pds=824 -pds=837
5009     disable inline_asm
5010 elif enabled pathscale; then
5011     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5012 elif enabled_any msvc icl; then
5013     enabled x86_32 && disable aligned_stack
5014     enabled_all x86_32 debug && add_cflags -Oy-
5015     enabled debug && add_ldflags -debug
5016     enable pragma_deprecated
5017     if enabled icl; then
5018         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5019         # (correctly) on icl 13.x.
5020         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5021             add_cflags -Qansi-alias
5022         # icl will pass the inline asm tests but inline asm is currently
5023         # not supported (build will fail)
5024         disable inline_asm
5025     fi
5026     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5027     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5028     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5029     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5030     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5031     # MSVC 2013 and newer can handle it fine.
5032     # If this declspec fails, force including stdlib.h before the restrict redefinition
5033     # happens in config.h.
5034     if [ $_restrict != restrict ]; then
5035         check_cc <<EOF || add_cflags -FIstdlib.h
5036 __declspec($_restrict) void* foo(int);
5037 EOF
5038     fi
5039 fi
5040
5041 for pfx in "" host_; do
5042     varname=${pfx%_}cc_type
5043     eval "type=\$$varname"
5044     if [ $type = "msvc" ]; then
5045         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
5046 static inline int foo(int a) { return a; }
5047 EOF
5048     fi
5049 done
5050
5051 case $as_type in
5052     clang)
5053         add_asflags -Qunused-arguments
5054     ;;
5055 esac
5056
5057 case $ld_type in
5058     clang)
5059         check_ldflags -Qunused-arguments
5060     ;;
5061 esac
5062
5063 case $target_os in
5064     osf1)
5065         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5066     ;;
5067     plan9)
5068         add_cppflags -Dmain=plan9_main
5069     ;;
5070 esac
5071
5072 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5073
5074 check_deps $CONFIG_LIST       \
5075            $CONFIG_EXTRA      \
5076            $HAVE_LIST         \
5077            $ALL_COMPONENTS    \
5078
5079 enabled_all dxva2 CoTaskMemFree &&
5080     prepend avconv_libs $($ldflags_filter "-lole32") &&
5081     enable dxva2_lib
5082
5083 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5084
5085 for thread in $THREADS_LIST; do
5086     if enabled $thread; then
5087         test -n "$thread_type" &&
5088             die "ERROR: Only one thread type must be selected." ||
5089             thread_type="$thread"
5090     fi
5091 done
5092
5093 if disabled stdatomic_h; then
5094     if enabled atomics_gcc; then
5095         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
5096     elif enabled atomics_win32; then
5097         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
5098     elif enabled atomics_suncc; then
5099         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
5100     elif enabled pthreads; then
5101         add_compat atomics/pthread/stdatomic.o
5102         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
5103     else
5104         enabled threads && die "Threading is enabled, but no atomics are available"
5105         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
5106     fi
5107 fi
5108
5109 enabled zlib && add_cppflags -DZLIB_CONST
5110
5111 # conditional library dependencies, in linking order
5112 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5113 enabled resample_filter && prepend avfilter_deps "avresample"
5114 enabled scale_filter    && prepend avfilter_deps "swscale"
5115
5116 enabled opus_decoder    && prepend avcodec_deps "avresample"
5117
5118 expand_deps(){
5119     lib_deps=${1}_deps
5120     eval "deps=\$$lib_deps"
5121     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5122     unique $lib_deps
5123 }
5124
5125 map 'expand_deps $v' $LIBRARY_LIST
5126
5127 if test "$quiet" != "yes"; then
5128
5129 echo "install prefix            $prefix"
5130 echo "source path               $source_path"
5131 echo "C compiler                $cc"
5132 echo "C library                 $libc_type"
5133 if test "$host_cc" != "$cc"; then
5134     echo "host C compiler           $host_cc"
5135     echo "host C library            $host_libc_type"
5136 fi
5137 echo "ARCH                      $arch ($cpu)"
5138 if test "$build_suffix" != ""; then
5139     echo "build suffix              $build_suffix"
5140 fi
5141 if test "$extra_version" != ""; then
5142     echo "version string suffix     $extra_version"
5143 fi
5144 echo "big-endian                ${bigendian-no}"
5145 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5146 if enabled x86; then
5147     echo "${yasmexe}                      ${yasm-no}"
5148     echo "MMX enabled               ${mmx-no}"
5149     echo "MMXEXT enabled            ${mmxext-no}"
5150     echo "3DNow! enabled            ${amd3dnow-no}"
5151     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5152     echo "SSE enabled               ${sse-no}"
5153     echo "SSSE3 enabled             ${ssse3-no}"
5154     echo "AVX enabled               ${avx-no}"
5155     echo "XOP enabled               ${xop-no}"
5156     echo "FMA3 enabled              ${fma3-no}"
5157     echo "FMA4 enabled              ${fma4-no}"
5158     echo "i686 features enabled     ${i686-no}"
5159     echo "CMOV is fast              ${fast_cmov-no}"
5160     echo "EBX available             ${ebx_available-no}"
5161     echo "EBP available             ${ebp_available-no}"
5162 fi
5163 if enabled aarch64; then
5164     echo "NEON enabled              ${neon-no}"
5165     echo "VFP enabled               ${vfp-no}"
5166 fi
5167 if enabled arm; then
5168     echo "ARMv5TE enabled           ${armv5te-no}"
5169     echo "ARMv6 enabled             ${armv6-no}"
5170     echo "ARMv6T2 enabled           ${armv6t2-no}"
5171     echo "VFP enabled               ${vfp-no}"
5172     echo "NEON enabled              ${neon-no}"
5173 fi
5174 if enabled ppc; then
5175     echo "AltiVec enabled           ${altivec-no}"
5176     echo "VSX enabled               ${vsx-no}"
5177     echo "POWER8 enabled            ${power8-no}"
5178     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5179     echo "dcbzl available           ${dcbzl-no}"
5180 fi
5181 echo "debug symbols             ${debug-no}"
5182 echo "optimize for size         ${small-no}"
5183 echo "optimizations             ${optimizations-no}"
5184 echo "static                    ${static-no}"
5185 echo "shared                    ${shared-no}"
5186 echo "network support           ${network-no}"
5187 echo "threading support         ${thread_type-no}"
5188 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5189 test -n "$random_seed" &&
5190     echo "random seed               ${random_seed}"
5191 echo
5192
5193 echo "External libraries:"
5194 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5195 echo
5196 echo "External libraries providing hardware acceleration:"
5197 print_enabled '' $HWACCEL_LIBRARY_LIST | print_3_columns
5198 echo
5199
5200 echo "Libraries:"
5201 print_enabled '' $LIBRARY_LIST | print_3_columns
5202 echo
5203
5204 echo "Programs:"
5205 print_enabled '' $PROGRAM_LIST | print_3_columns
5206 echo
5207
5208 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5209     echo "Enabled ${type}s:"
5210     eval list=\$$(toupper $type)_LIST
5211     print_enabled '_*' $list | print_3_columns
5212     echo
5213 done
5214
5215 license="LGPL version 2.1 or later"
5216 if enabled nonfree; then
5217     license="nonfree and unredistributable"
5218 elif enabled gplv3; then
5219     license="GPL version 3 or later"
5220 elif enabled lgplv3; then
5221     license="LGPL version 3 or later"
5222 elif enabled gpl; then
5223     license="GPL version 2 or later"
5224 fi
5225
5226 echo "License: $license"
5227
5228 echo "Creating configuration files ..."
5229
5230 fi # test "$quiet" != "yes"
5231
5232 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5233
5234 config_files="$TMPH config.mak"
5235
5236 cat > config.mak <<EOF
5237 # Automatically generated by configure - do not modify!
5238 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
5239 prefix=$prefix
5240 LIBDIR=\$(DESTDIR)$libdir
5241 SHLIBDIR=\$(DESTDIR)$shlibdir
5242 INCDIR=\$(DESTDIR)$incdir
5243 BINDIR=\$(DESTDIR)$bindir
5244 DATADIR=\$(DESTDIR)$datadir
5245 DOCDIR=\$(DESTDIR)$docdir
5246 MANDIR=\$(DESTDIR)$mandir
5247 SRC_PATH=$source_path
5248 CC_IDENT=$cc_ident
5249 ARCH=$arch
5250 INTRINSICS=$intrinsics
5251 CC=$cc
5252 OBJCC=$cc
5253 AS=$as
5254 OBJCC=$objcc
5255 LD=$ld
5256 DEPCC=$dep_cc
5257 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5258 DEPAS=$as
5259 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5260 YASM=$yasmexe
5261 DEPYASM=$yasmexe
5262 AR=$ar
5263 ARFLAGS=$arflags
5264 AR_O=$ar_o
5265 RANLIB=$ranlib
5266 STRIP=$strip
5267 LN_S=$ln_s
5268 CPPFLAGS=$CPPFLAGS
5269 CFLAGS=$CFLAGS
5270 OBJCFLAGS=$OBJCFLAGS
5271 ASFLAGS=$ASFLAGS
5272 AS_C=$AS_C
5273 AS_O=$AS_O
5274 OBJCC_C=$OBJCC_C
5275 OBJCC_E=$OBJCC_E
5276 OBJCC_O=$OBJCC_O
5277 CC_C=$CC_C
5278 CC_E=$CC_E
5279 CC_O=$CC_O
5280 LD_O=$LD_O
5281 LD_LIB=$LD_LIB
5282 LD_PATH=$LD_PATH
5283 DLLTOOL=$dlltool
5284 LDFLAGS=$LDFLAGS
5285 LDEXEFLAGS=$LDEXEFLAGS
5286 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5287 STRIPFLAGS=$STRIPFLAGS
5288 YASMFLAGS=$YASMFLAGS
5289 BUILDSUF=$build_suffix
5290 FULLNAME=$FULLNAME
5291 LIBPREF=$LIBPREF
5292 LIBSUF=$LIBSUF
5293 LIBNAME=$LIBNAME
5294 SLIBPREF=$SLIBPREF
5295 SLIBSUF=$SLIBSUF
5296 EXESUF=$EXESUF
5297 EXTRA_VERSION=$extra_version
5298 CCDEP=$CCDEP
5299 CCDEP_FLAGS=$CCDEP_FLAGS
5300 ASDEP=$ASDEP
5301 ASDEP_FLAGS=$ASDEP_FLAGS
5302 CC_DEPFLAGS=$CC_DEPFLAGS
5303 AS_DEPFLAGS=$AS_DEPFLAGS
5304 HOSTCC=$host_cc
5305 HOSTLD=$host_ld
5306 HOSTCFLAGS=$host_cflags
5307 HOSTCPPFLAGS=$host_cppflags
5308 HOSTEXESUF=$HOSTEXESUF
5309 HOSTLDFLAGS=$host_ldflags
5310 HOSTLIBS=$host_libs
5311 DEPHOSTCC=$host_cc
5312 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5313 HOSTCCDEP=$HOSTCCDEP
5314 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5315 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5316 HOSTCC_C=$HOSTCC_C
5317 HOSTCC_O=$HOSTCC_O
5318 HOSTLD_O=$HOSTLD_O
5319 TARGET_EXEC=$target_exec $target_exec_args
5320 TARGET_PATH=$target_path
5321 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5322 CFLAGS-avplay=$sdl_cflags
5323 ZLIB=$($ldflags_filter -lz)
5324 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5325 EXTRALIBS=$extralibs
5326 COMPAT_OBJS=$compat_objs
5327 EXEOBJS=$exeobjs
5328 INSTALL=install
5329 LIBTARGET=${LIBTARGET}
5330 SLIBNAME=${SLIBNAME}
5331 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5332 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5333 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5334 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5335 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5336 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5337 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5338 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5339 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
5340 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
5341 EOF
5342
5343 get_version(){
5344     lcname=lib${1}
5345     name=$(toupper $lcname)
5346     file=$source_path/$lcname/version.h
5347     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
5348     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
5349     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
5350     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
5351     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
5352 }
5353
5354 map 'get_version $v' $LIBRARY_LIST
5355
5356 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
5357
5358 print_program_libs(){
5359     eval "program_libs=\$${1}_libs"
5360     eval echo "LIBS-${1}=${program_libs}" >> config.mak
5361 }
5362
5363 map 'print_program_libs $v' $PROGRAM_LIST
5364
5365 cat > $TMPH <<EOF
5366 /* Automatically generated by configure - do not modify! */
5367 #ifndef LIBAV_CONFIG_H
5368 #define LIBAV_CONFIG_H
5369 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
5370 #define LIBAV_LICENSE "$(c_escape $license)"
5371 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5372 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5373 #define restrict $_restrict
5374 #define EXTERN_PREFIX "${extern_prefix}"
5375 #define EXTERN_ASM ${extern_prefix}
5376 #define SLIBSUF "$SLIBSUF"
5377 EOF
5378
5379 test -n "$malloc_prefix" &&
5380     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5381
5382 if enabled yasm; then
5383     append config_files $TMPASM
5384     printf '' >$TMPASM
5385 fi
5386
5387 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5388
5389 print_config ARCH_   "$config_files" $ARCH_LIST
5390 print_config HAVE_   "$config_files" $HAVE_LIST
5391 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5392                                      $CONFIG_EXTRA      \
5393                                      $ALL_COMPONENTS    \
5394
5395 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
5396
5397 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5398 cp_if_changed $TMPH config.h
5399 touch .config
5400
5401 enabled yasm && cp_if_changed $TMPASM config.asm
5402
5403 cat > $TMPH <<EOF
5404 /* Generated by ffconf */
5405 #ifndef AVUTIL_AVCONFIG_H
5406 #define AVUTIL_AVCONFIG_H
5407 EOF
5408
5409 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5410
5411 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5412
5413 cp_if_changed $TMPH libavutil/avconfig.h
5414
5415 # generate the lists of enabled components
5416 print_enabled_components(){
5417     file=$1
5418     struct_name=$2
5419     name=$3
5420     shift 3
5421     echo "static const $struct_name *$name[] = {" > $TMPH
5422     for c in $*; do
5423         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
5424     done
5425     echo "    NULL };" >> $TMPH
5426     cp_if_changed $TMPH $file
5427 }
5428
5429 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
5430 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
5431
5432 test -n "$WARNINGS" && printf "\n$WARNINGS"
5433
5434 # build pkg-config files
5435
5436 lib_version(){
5437     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
5438 }
5439
5440 pkgconfig_generate(){
5441     name=$1
5442     shortname=${name#lib}${build_suffix}
5443     comment=$2
5444     version=$3
5445     libs=$4
5446     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
5447     requires=${requires%, }
5448     enabled ${name#lib} || return 0
5449     mkdir -p $name
5450     cat <<EOF > $name/$name.pc
5451 prefix=$prefix
5452 exec_prefix=\${prefix}
5453 libdir=$libdir
5454 includedir=$incdir
5455
5456 Name: $name
5457 Description: $comment
5458 Version: $version
5459 Requires: $(enabled shared || echo $requires)
5460 Requires.private: $(enabled shared && echo $requires)
5461 Conflicts:
5462 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
5463 Libs.private: $(enabled shared && echo $libs)
5464 Cflags: -I\${includedir}
5465 EOF
5466     cat <<EOF > $name/$name-uninstalled.pc
5467 prefix=
5468 exec_prefix=
5469 libdir=\${pcfiledir}
5470 includedir=${source_path}
5471
5472 Name: $name
5473 Description: $comment
5474 Version: $version
5475 Requires: $requires
5476 Conflicts:
5477 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
5478 Cflags: -I\${includedir}
5479 EOF
5480 }
5481
5482 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
5483 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
5484 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
5485 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
5486 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
5487 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$LIBM"
5488 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"