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:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --prefix=PREFIX          install in PREFIX [$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-avxsynth          Linux version of AviSynth
 192   --enable-bzlib             bzip2 compression [autodetect]
 193   --enable-frei0r            video filtering plugins
 194   --enable-gnutls            crypto
 195   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
 196   --enable-libcdio           audio CD input
 197   --enable-libdc1394         IEEE 1394/Firewire camera input
 198   --enable-libdcadec         DCA audio decoding
 199   --enable-libfaac           AAC audio encoding
 200   --enable-libfdk-aac        AAC audio encoding/decoding
 201   --enable-libfontconfig     font configuration and management
 202   --enable-libfreetype       font rendering
 203   --enable-libgsm            GSM audio encoding/decoding
 204   --enable-libhdcd           HDCD decoding filter
 205   --enable-libilbc           ILBC audio encoding/decoding
 206   --enable-libjack           JACK audio sound server
 207   --enable-libkvazaar        HEVC video encoding
 208   --enable-libmp3lame        MP3 audio encoding
 209   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
 210   --enable-libopencore-amrwb AMR-WB audio decoding
 211   --enable-libopencv         computer vision
 212   --enable-libopenh264       H.264 video encoding/decoding
 213   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
 214   --enable-libopus           Opus audio encoding/decoding
 215   --enable-libpulse          Pulseaudio sound server
 216   --enable-librtmp           RTMP streaming
 217   --enable-libschroedinger   Dirac video encoding/decoding
 218   --enable-libsnappy         snappy compression
 219   --enable-libspeex          Speex audio encoding/decoding
 220   --enable-libtheora         Theora video encoding/decoding
 221   --enable-libtwolame        MP2 audio encoding
 222   --enable-libvo-aacenc      AAC audio encoding
 223   --enable-libvo-amrwbenc    AMR-WB audio encoding
 224   --enable-libvorbis         Vorbis audio encoding/decoding
 225   --enable-libvpx            VP* video encoding/decoding
 226   --enable-libwavpack        Wavpack audio encoding/decoding
 227   --enable-libwebp           WebP image encoding/decoding
 228   --enable-libx264           H.264 video encoding
 229   --enable-libx265           HEVC video encoding
 230   --enable-libxavs           Chinese AVS video encoding
 231   --enable-libxcb            X window system protocol communication
 232   --enable-libxcb-shm        X11 shm communication [auto]
 233   --enable-libxcb-xfixes     X11 mouse rendering [auto]
 234   --enable-libxvid           MPEG-4 ASP video encoding
 235   --enable-openssl           crypto
 236   --enable-zlib              compression [autodetect]
 237
 238   The following libraries provide various hardware acceleration features:
 239   --enable-cuda    Nvidia CUDA (dynamically linked)
 240   --enable-cuvid   Nvidia CUVID video decode acceleration
 241   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
 242   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
 243   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
 244   --enable-libnpp  Nvidia CUDA processing
 245   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
 246   --enable-nvenc   Nvidia video encoding
 247   --enable-omx     OpenMAX IL
 248   --enable-omx-rpi OpenMAX IL for Raspberry Pi
 249   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
 250   --enable-vda     Apple Video Decode Acceleration [auto]
 251   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
 252
 253 Toolchain options:
 254   --arch=ARCH              select architecture [$arch]
 255   --cpu=CPU                select the minimum required CPU (affects
 256                            instruction selection, may crash on older CPUs)
 257   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 258   --enable-cross-compile   assume a cross-compiler is used
 259   --sysroot=PATH           root of cross-build tree
 260   --sysinclude=PATH        location of cross-build system headers
 261   --target-os=OS           compiler targets OS [$target_os]
 262   --target-exec=CMD        command to run executables on target
 263   --target-path=DIR        path to view of build directory on target
 264   --target-samples=DIR     path to samples directory on target
 265   --toolchain=NAME         set tool defaults according to NAME
 266   --nm=NM                  use nm tool
 267   --ar=AR                  use archive tool AR [$ar_default]
 268   --as=AS                  use assembler AS [$as_default]
 269   --cc=CC                  use C compiler CC [$cc_default]
 270   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 271   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 272   --ld=LD                  use linker LD
 273   --x86asmexe=X86ASM       use x86 assembler X86ASM
 274   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 275   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 276   --host-cc=HOSTCC         use host C compiler HOSTCC
 277   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 278   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 279   --host-ld=HOSTLD         use host linker HOSTLD
 280   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 281   --host-libs=HLIBS        use libs HLIBS when linking for host
 282   --host-os=OS             compiler host OS [$target_os]
 283   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 284   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 285   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 286   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 287   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 288   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 289   --extra-version=STRING   version string suffix []
 290   --optflags=OPTFLAGS      override optimization-related compiler flags
 291   --enable-pic             build position-independent code
 292   --enable-thumb           compile for Thumb instruction set
 293   --enable-lto             use link-time optimization
 294   --env="ENV=override"     override the environment variables
 295
 296 Advanced options (experts only):
 297   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 298   --custom-allocator=NAME  use a supported custom allocator
 299   --disable-symver         disable symbol versioning
 300   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 301   --disable-safe-bitstream-reader
 302                            disable buffer boundary checking in bitreaders
 303                            (faster, but may crash)
 304   --enable-sram            allow use of on-chip SRAM
 305
 306 Optimization options (experts only):
 307   --disable-asm            disable all assembly optimizations
 308   --disable-altivec        disable AltiVec optimizations
 309   --disable-vsx            disable VSX optimizations
 310   --disable-power8         disable POWER8 optimizations
 311   --disable-amd3dnow       disable 3DNow! optimizations
 312   --disable-amd3dnowext    disable 3DNow! extended optimizations
 313   --disable-mmx            disable MMX optimizations
 314   --disable-mmxext         disable MMXEXT optimizations
 315   --disable-sse            disable SSE optimizations
 316   --disable-sse2           disable SSE2 optimizations
 317   --disable-sse3           disable SSE3 optimizations
 318   --disable-ssse3          disable SSSE3 optimizations
 319   --disable-sse4           disable SSE4 optimizations
 320   --disable-sse42          disable SSE4.2 optimizations
 321   --disable-avx            disable AVX optimizations
 322   --disable-xop            disable XOP optimizations
 323   --disable-fma3           disable FMA3 optimizations
 324   --disable-fma4           disable FMA4 optimizations
 325   --disable-avx2           disable AVX2 optimizations
 326   --disable-armv5te        disable armv5te optimizations
 327   --disable-armv6          disable armv6 optimizations
 328   --disable-armv6t2        disable armv6t2 optimizations
 329   --disable-vfp            disable VFP optimizations
 330   --disable-neon           disable NEON optimizations
 331   --disable-inline-asm     disable use of inline assembly
 332   --disable-x86asm         disable use of standalone x86 assembly
 333
 334 Developer options (useful when working on Libav itself):
 335   --disable-debug          disable debugging symbols
 336   --enable-debug=LEVEL     set the debug level [$debuglevel]
 337   --disable-optimizations  disable compiler optimizations
 338   --enable-extra-warnings  enable more compiler warnings
 339   --samples=PATH           location of test samples for FATE, if not set use
 340                            \$LIBAV_SAMPLES at make invocation time.
 341   --enable-neon-clobber-test check NEON registers for clobbering (should be
 342                            used only for debugging purposes)
 343   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 344                            should be used only for debugging purposes)
 345   --enable-random          randomly enable/disable components
 346   --disable-random
 347   --enable-random=LIST     randomly enable/disable specific components or
 348   --disable-random=LIST    component groups. LIST is a comma-separated list
 349                            of NAME[:PROB] entries where NAME is a component
 350                            (group) and PROB the probability associated with
 351                            NAME (default 0.5).
 352   --random-seed=VALUE      seed value for --enable/disable-random
 353   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 354                            (only applies to --disable-optimizations builds)
 355   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 356                            in the name) of tests whose result is ignored
 357
 358 NOTE: Object files are built at the place where configure is launched.
 359 EOF
 360   exit 0
 361 }
 362
 363 quotes='""'
 364
 365 log(){
 366     echo "$@" >> $logfile
 367 }
 368
 369 log_file(){
 370     log BEGIN $1
 371     i=1
 372     while read line; do
 373         printf '%5s   %s\n' "${i}" "${line}"
 374         i=$(($i+1))
 375     done < $1 >> $logfile
 376     log END $1
 377 }
 378
 379 echolog(){
 380     log "$@"
 381     echo "$@"
 382 }
 383
 384 warn(){
 385     log "WARNING: $*"
 386     WARNINGS="${WARNINGS}WARNING: $*\n"
 387 }
 388
 389 die(){
 390     echolog "$@"
 391     cat <<EOF
 392
 393 If you think configure made a mistake, make sure you are using the latest
 394 version from Git.  If the latest version fails, report the problem to the
 395 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 396 EOF
 397     if disabled logging; then
 398         cat <<EOF
 399 Rerun configure with logging enabled (do not use --disable-logging), and
 400 include the log this produces with your report.
 401 EOF
 402     else
 403         cat <<EOF
 404 Include the log file "$logfile" produced by configure as this will help
 405 solving the problem.
 406 EOF
 407     fi
 408     exit 1
 409 }
 410
 411 # Avoid locale weirdness, besides we really just want to translate ASCII.
 412 toupper(){
 413     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 414 }
 415
 416 tolower(){
 417     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 418 }
 419
 420 c_escape(){
 421     echo "$*" | sed 's/["\\]/\\\0/g'
 422 }
 423
 424 sh_quote(){
 425     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 426     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 427     echo "$v"
 428 }
 429
 430 cleanws(){
 431     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 432 }
 433
 434 filter(){
 435     pat=$1
 436     shift
 437     for v; do
 438         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 439     done
 440 }
 441
 442 filter_out(){
 443     pat=$1
 444     shift
 445     for v; do
 446         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 447     done
 448 }
 449
 450 map(){
 451     m=$1
 452     shift
 453     for v; do eval $m; done
 454 }
 455
 456 add_suffix(){
 457     suffix=$1
 458     shift
 459     for v; do echo ${v}${suffix}; done
 460 }
 461
 462 set_all(){
 463     value=$1
 464     shift
 465     for var in $*; do
 466         eval $var=$value
 467     done
 468 }
 469
 470 set_weak(){
 471     value=$1
 472     shift
 473     for var; do
 474         eval : \${$var:=$value}
 475     done
 476 }
 477
 478 sanitize_var_name(){
 479     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 480 }
 481
 482 set_sanitized(){
 483     var=$1
 484     shift
 485     eval $(sanitize_var_name "$var")='$*'
 486 }
 487
 488 get_sanitized(){
 489     eval echo \$$(sanitize_var_name "$1")
 490 }
 491
 492 pushvar(){
 493     for pvar in $*; do
 494         eval level=\${${pvar}_level:=0}
 495         eval ${pvar}_${level}="\$$pvar"
 496         eval ${pvar}_level=$(($level+1))
 497     done
 498 }
 499
 500 popvar(){
 501     for pvar in $*; do
 502         eval level=\${${pvar}_level:-0}
 503         test $level = 0 && continue
 504         eval level=$(($level-1))
 505         eval $pvar="\${${pvar}_${level}}"
 506         eval ${pvar}_level=$level
 507         eval unset ${pvar}_${level}
 508     done
 509 }
 510
 511 enable(){
 512     set_all yes $*
 513 }
 514
 515 disable(){
 516     set_all no $*
 517 }
 518
 519 enable_weak(){
 520     set_weak yes $*
 521 }
 522
 523 disable_weak(){
 524     set_weak no $*
 525 }
 526
 527 enable_sanitized(){
 528     for var; do
 529         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 530     done
 531 }
 532
 533 disable_sanitized(){
 534     for var; do
 535         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 536     done
 537 }
 538
 539 do_enable_deep(){
 540     for var; do
 541         enabled $var && continue
 542         eval sel="\$${var}_select"
 543         eval sgs="\$${var}_suggest"
 544         pushvar var sgs
 545         enable_deep $sel
 546         popvar sgs
 547         enable_deep_weak $sgs
 548         popvar var
 549     done
 550 }
 551
 552 enable_deep(){
 553     do_enable_deep $*
 554     enable $*
 555 }
 556
 557 enable_deep_weak(){
 558     for var; do
 559         disabled $var && continue
 560         pushvar var
 561         do_enable_deep $var
 562         popvar var
 563         enable_weak $var
 564     done
 565 }
 566
 567 enabled(){
 568     test "${1#!}" = "$1" && op== || op=!=
 569     eval test "x\$${1#!}" $op "xyes"
 570 }
 571
 572 disabled(){
 573     test "${1#!}" = "$1" && op== || op=!=
 574     eval test "x\$${1#!}" $op "xno"
 575 }
 576
 577 enabled_all(){
 578     for opt; do
 579         enabled $opt || return 1
 580     done
 581 }
 582
 583 disabled_all(){
 584     for opt; do
 585         disabled $opt || return 1
 586     done
 587 }
 588
 589 enabled_any(){
 590     for opt; do
 591         enabled $opt && return 0
 592     done
 593 }
 594
 595 disabled_any(){
 596     for opt; do
 597         disabled $opt && return 0
 598     done
 599     return 1
 600 }
 601
 602 set_default(){
 603     for opt; do
 604         eval : \${$opt:=\$${opt}_default}
 605     done
 606 }
 607
 608 is_in(){
 609     value=$1
 610     shift
 611     for var in $*; do
 612         [ $var = $value ] && return 0
 613     done
 614     return 1
 615 }
 616
 617 check_deps(){
 618     for cfg; do
 619         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 620         disabled ${cfg}_checking && continue
 621         enable ${cfg}_checking
 622
 623         eval dep_all="\$${cfg}_deps"
 624         eval dep_any="\$${cfg}_deps_any"
 625         eval dep_con="\$${cfg}_conflict"
 626         eval dep_sel="\$${cfg}_select"
 627         eval dep_sgs="\$${cfg}_suggest"
 628         eval dep_ifa="\$${cfg}_if"
 629         eval dep_ifn="\$${cfg}_if_any"
 630
 631         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 632         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 633         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 634
 635         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 636         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 637         enabled_all  $dep_all || disable $cfg
 638         enabled_any  $dep_any || disable $cfg
 639         disabled_all $dep_con || disable $cfg
 640         disabled_any $dep_sel && disable $cfg
 641
 642         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 643
 644         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 645             # filter out library deps, these do not belong in extralibs
 646             is_in $dep $LIBRARY_LIST && continue
 647             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 648         done
 649
 650         disable ${cfg}_checking
 651     done
 652 }
 653
 654 print_config(){
 655     pfx=$1
 656     files=$2
 657     shift 2
 658     map 'eval echo "$v \${$v:-no}"' "$@" |
 659     awk "BEGIN { split(\"$files\", files) }
 660         {
 661             c = \"$pfx\" toupper(\$1);
 662             v = \$2;
 663             sub(/yes/, 1, v);
 664             sub(/no/,  0, v);
 665             for (f in files) {
 666                 file = files[f];
 667                 if (file ~ /\\.h\$/) {
 668                     printf(\"#define %s %d\\n\", c, v) >>file;
 669                 } else if (file ~ /\\.asm\$/) {
 670                     printf(\"%%define %s %d\\n\", c, v) >>file;
 671                 } else if (file ~ /\\.mak\$/) {
 672                     n = -v ? \"\" : \"!\";
 673                     printf(\"%s%s=yes\\n\", n, c) >>file;
 674                 }
 675             }
 676         }"
 677 }
 678
 679 print_enabled(){
 680     suf=$1
 681     shift
 682     for v; do
 683         enabled $v && printf "%s\n" ${v%$suf}
 684     done
 685 }
 686
 687 append(){
 688     var=$1
 689     shift
 690     eval "$var=\"\$$var $*\""
 691 }
 692
 693 prepend(){
 694     var=$1
 695     shift
 696     eval "$var=\"$* \$$var\""
 697 }
 698
 699 unique(){
 700     var=$1
 701     uniq_list=""
 702     for tok in $(eval echo \$$var); do
 703         uniq_list="$(filter_out $tok $uniq_list) $tok"
 704     done
 705     eval "$var=\"${uniq_list}\""
 706 }
 707
 708 resolve(){
 709     var=$1
 710     tmpvar=
 711     for entry in $(eval echo \$$var); do
 712         tmpvar="$tmpvar $(eval echo \$${entry})"
 713     done
 714     eval "$var=\"${tmpvar}\""
 715 }
 716
 717 add_cppflags(){
 718     append CPPFLAGS "$@"
 719 }
 720
 721 add_cflags(){
 722     append CFLAGS $($cflags_filter "$@")
 723 }
 724
 725 add_cflags_headers(){
 726     append CFLAGS_HEADERS $($cflags_filter "$@")
 727 }
 728
 729 add_asflags(){
 730     append ASFLAGS $($asflags_filter "$@")
 731 }
 732
 733 add_objcflags(){
 734     append OBJCFLAGS $($objcflags_filter "$@")
 735 }
 736
 737 add_ldflags(){
 738     append LDFLAGS $($ldflags_filter "$@")
 739 }
 740
 741 add_ldexeflags(){
 742     append LDEXEFLAGS $($ldflags_filter "$@")
 743 }
 744
 745 add_ldsoflags(){
 746     append LDSOFLAGS $($ldflags_filter "$@")
 747 }
 748
 749 add_stripflags(){
 750     append STRIPFLAGS "$@"
 751 }
 752
 753 add_extralibs(){
 754     prepend extralibs $($ldflags_filter "$@")
 755 }
 756
 757 add_host_cppflags(){
 758     append host_cppflags "$@"
 759 }
 760
 761 add_host_cflags(){
 762     append host_cflags $($host_cflags_filter "$@")
 763 }
 764
 765 add_host_ldflags(){
 766     append host_ldflags $($host_ldflags_filter "$@")
 767 }
 768
 769 add_compat(){
 770     append compat_objs $1
 771     shift
 772     map 'add_cppflags -D$v' "$@"
 773 }
 774
 775 check_cmd(){
 776     log "$@"
 777     "$@" >> $logfile 2>&1
 778 }
 779
 780 cc_o(){
 781     eval printf '%s\\n' $CC_O
 782 }
 783
 784 cc_e(){
 785     eval printf '%s\\n' $CC_E
 786 }
 787
 788 check_cc(){
 789     log check_cc "$@"
 790     cat > $TMPC
 791     log_file $TMPC
 792     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 793 }
 794
 795 check_objcc(){
 796     log check_objcc "$@"
 797     cat > $TMPC
 798     log_file $TMPC
 799     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
 800 }
 801
 802 check_cpp(){
 803     log check_cpp "$@"
 804     cat > $TMPC
 805     log_file $TMPC
 806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 807 }
 808
 809 as_o(){
 810     eval printf '%s\\n' $AS_O
 811 }
 812
 813 check_as(){
 814     log check_as "$@"
 815     cat > $TMPS
 816     log_file $TMPS
 817     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 818 }
 819
 820 check_inline_asm(){
 821     log check_inline_asm "$@"
 822     name="$1"
 823     code="$2"
 824     shift 2
 825     disable $name
 826     check_cc "$@" <<EOF && enable $name
 827 void foo(void){ __asm__ volatile($code); }
 828 EOF
 829 }
 830
 831 check_insn(){
 832     log check_insn "$@"
 833     check_inline_asm ${1}_inline "\"$2\""
 834     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 835 }
 836
 837 check_x86asm(){
 838     log check_x86asm "$@"
 839     echo "$1" > $TMPS
 840     log_file $TMPS
 841     shift 1
 842     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
 843 }
 844
 845 ld_o(){
 846     eval printf '%s\\n' $LD_O
 847 }
 848
 849 check_ld(){
 850     log check_ld "$@"
 851     flags=$(filter_out '-l*' "$@")
 852     libs=$(filter '-l*' "$@")
 853     check_cc $($cflags_filter $flags) || return
 854     flags=$($ldflags_filter $flags)
 855     libs=$($ldflags_filter $libs)
 856     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 857 }
 858
 859 print_include(){
 860     hdr=$1
 861     test "${hdr%.h}" = "${hdr}" &&
 862         echo "#include $hdr"    ||
 863         echo "#include <$hdr>"
 864 }
 865
 866 check_code(){
 867     log check_code "$@"
 868     check=$1
 869     headers=$2
 870     code=$3
 871     shift 3
 872     {
 873         for hdr in $headers; do
 874             print_include $hdr
 875         done
 876         echo "int main(void) { $code; return 0; }"
 877     } | check_$check "$@"
 878 }
 879
 880 check_cppflags(){
 881     log check_cppflags "$@"
 882     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
 883 #include <stdlib.h>;
 884 EOF
 885 }
 886
 887 test_cflags(){
 888     log test_cflags "$@"
 889     set -- $($cflags_filter "$@")
 890     check_cc "$@" <<EOF
 891 int x;
 892 EOF
 893 }
 894
 895 check_cflags(){
 896     log check_cflags "$@"
 897     test_cflags "$@" && add_cflags "$@"
 898 }
 899
 900 test_objcflags(){
 901     log test_objcflags "$@"
 902     set -- $($objcflags_filter "$@")
 903     check_objcc "$@" <<EOF
 904 int x;
 905 EOF
 906 }
 907
 908 check_objcflags(){
 909     log check_objcflags "$@"
 910     test_objcflags "$@" && add_objcflags "$@"
 911 }
 912
 913 test_ldflags(){
 914     log test_ldflags "$@"
 915     check_ld "$@" <<EOF
 916 int main(void){ return 0; }
 917 EOF
 918 }
 919
 920 check_ldflags(){
 921     log check_ldflags "$@"
 922     test_ldflags "$@" && add_ldflags "$@"
 923 }
 924
 925 test_stripflags(){
 926     log test_stripflags "$@"
 927     # call check_cc to get a fresh TMPO
 928     check_cc <<EOF
 929 int main(void) { return 0; }
 930 EOF
 931     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 932 }
 933
 934 check_stripflags(){
 935     log check_stripflags "$@"
 936     test_stripflags "$@" && add_stripflags "$@"
 937 }
 938
 939 check_header(){
 940     log check_header "$@"
 941     header=$1
 942     shift
 943     disable_sanitized $header
 944     check_cpp "$@" <<EOF && enable_sanitized $header
 945 #include <$header>
 946 int x;
 947 EOF
 948 }
 949
 950 check_func(){
 951     log check_func "$@"
 952     func=$1
 953     shift
 954     disable $func
 955     check_ld "$@" <<EOF && enable $func
 956 extern int $func();
 957 int main(void){ $func(); }
 958 EOF
 959 }
 960
 961 check_mathfunc(){
 962     log check_mathfunc "$@"
 963     func=$1
 964     narg=$2
 965     shift 2
 966     test $narg = 2 && args="f, g" || args="f"
 967     disable $func
 968     check_ld "$@" <<EOF && enable $func
 969 #include <math.h>
 970 float foo(float f, float g) { return $func($args); }
 971 int main(void){ return 0; }
 972 EOF
 973 }
 974
 975 check_func_headers(){
 976     log check_func_headers "$@"
 977     headers=$1
 978     funcs=$2
 979     shift 2
 980     {
 981         for hdr in $headers; do
 982             print_include $hdr
 983         done
 984         for func in $funcs; do
 985             echo "long check_$func(void) { return (long) $func; }"
 986         done
 987         echo "int main(void) { return 0; }"
 988     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
 989 }
 990
 991 check_cpp_condition(){
 992     log check_cpp_condition "$@"
 993     header=$1
 994     condition=$2
 995     shift 2
 996     check_cpp "$@" <<EOF
 997 #include <$header>
 998 #if !($condition)
 999 #error "unsatisfied condition: $condition"
1000 #endif
1001 EOF
1002 }
1003
1004 test_cflags_cpp(){
1005     log test_cflags_cpp "$@"
1006     flags=$1
1007     condition=$2
1008     shift 2
1009     set -- $($cflags_filter "$flags")
1010     check_cpp "$@" <<EOF
1011 #if !($condition)
1012 #error "unsatisfied condition: $condition"
1013 #endif
1014 EOF
1015 }
1016
1017 check_lib(){
1018     log check_lib "$@"
1019     name="$1"
1020     headers="$2"
1021     funcs="$3"
1022     shift 3
1023     disable $name
1024     check_func_headers "$headers" "$funcs" "$@" &&
1025         enable $name && eval ${name}_extralibs="\$@"
1026 }
1027
1028 test_pkg_config(){
1029     log test_pkg_config "$@"
1030     name="$1"
1031     pkg_version="$2"
1032     pkg="${2%% *}"
1033     headers="$3"
1034     funcs="$4"
1035     shift 4
1036     disable $name
1037     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1038     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1039     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1040     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1041         enable $name &&
1042         set_sanitized "${name}_cflags"    $pkg_cflags &&
1043         set_sanitized "${name}_extralibs" $pkg_libs
1044 }
1045
1046 check_pkg_config(){
1047     log check_pkg_config "$@"
1048     name="$1"
1049     test_pkg_config "$@" &&
1050         eval add_cflags \$${name}_cflags
1051 }
1052
1053 check_exec(){
1054     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1055 }
1056
1057 check_exec_crash(){
1058     log check_exec_crash "$@"
1059     code=$(cat)
1060
1061     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1062     # are safe but may not be available everywhere.  Thus we use
1063     # raise(SIGTERM) instead.  The check is run in a subshell so we
1064     # can redirect the "Terminated" message from the shell.  SIGBUS
1065     # is not defined by standard C so it is used conditionally.
1066
1067     (check_exec "$@") >> $logfile 2>&1 <<EOF
1068 #include <signal.h>
1069 static void sighandler(int sig){
1070     raise(SIGTERM);
1071 }
1072 int foo(void){
1073     $code
1074 }
1075 int (*func_ptr)(void) = foo;
1076 int main(void){
1077     signal(SIGILL, sighandler);
1078     signal(SIGFPE, sighandler);
1079     signal(SIGSEGV, sighandler);
1080 #ifdef SIGBUS
1081     signal(SIGBUS, sighandler);
1082 #endif
1083     return func_ptr();
1084 }
1085 EOF
1086 }
1087
1088 check_type(){
1089     log check_type "$@"
1090     headers=$1
1091     type=$2
1092     shift 2
1093     disable_sanitized "$type"
1094     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1095 }
1096
1097 check_struct(){
1098     log check_struct "$@"
1099     headers=$1
1100     struct=$2
1101     member=$3
1102     shift 3
1103     disable_sanitized "${struct}_${member}"
1104     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1105         enable_sanitized "${struct}_${member}"
1106 }
1107
1108 check_builtin(){
1109     log check_builtin "$@"
1110     name=$1
1111     headers=$2
1112     builtin=$3
1113     shift 3
1114     disable "$name"
1115     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1116 }
1117
1118 check_compile_assert(){
1119     log check_compile_assert "$@"
1120     name=$1
1121     headers=$2
1122     condition=$3
1123     shift 3
1124     disable "$name"
1125     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1126 }
1127
1128 require(){
1129     log require "$@"
1130     name_version="$1"
1131     name="${1%% *}"
1132     headers="$2"
1133     func="$3"
1134     shift 3
1135     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1136 }
1137
1138 require_header(){
1139     log require "$@"
1140     header="$1"
1141     shift
1142     check_header "$header" "$@" || die "ERROR: $header not found"
1143 }
1144
1145 require_cpp_condition(){
1146     log require "$@"
1147     header="$1"
1148     condition="$2"
1149     shift 2
1150     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1151 }
1152
1153 require_pkg_config(){
1154     log require_pkg_config "$@"
1155     pkg_version="$2"
1156     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1157 }
1158
1159 hostcc_e(){
1160     eval printf '%s\\n' $HOSTCC_E
1161 }
1162
1163 hostcc_o(){
1164     eval printf '%s\\n' $HOSTCC_O
1165 }
1166
1167 check_host_cc(){
1168     log check_host_cc "$@"
1169     cat > $TMPC
1170     log_file $TMPC
1171     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1172 }
1173
1174 check_host_cpp(){
1175     log check_host_cpp "$@"
1176     cat > $TMPC
1177     log_file $TMPC
1178     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1179 }
1180
1181 check_host_cppflags(){
1182     log check_host_cppflags "$@"
1183     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1184 #include <stdlib.h>;
1185 EOF
1186 }
1187
1188 check_host_cflags(){
1189     log check_host_cflags "$@"
1190     set -- $($host_cflags_filter "$@")
1191     check_host_cc "$@" <<EOF && append host_cflags "$@"
1192 int x;
1193 EOF
1194 }
1195
1196 check_host_cpp_condition(){
1197     log check_host_cpp_condition "$@"
1198     header=$1
1199     condition=$2
1200     shift 2
1201     check_host_cpp "$@" <<EOF
1202 #include <$header>
1203 #if !($condition)
1204 #error "unsatisfied condition: $condition"
1205 #endif
1206 EOF
1207 }
1208
1209 apply(){
1210     file=$1
1211     shift
1212     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1213 }
1214
1215 cp_if_changed(){
1216     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1217     mkdir -p "$(dirname $2)"
1218     cp -f "$1" "$2"
1219 }
1220
1221 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1222 # system-dependent things.
1223
1224 AVCODEC_COMPONENTS="
1225     bsfs
1226     decoders
1227     encoders
1228     hwaccels
1229     parsers
1230 "
1231
1232 AVDEVICE_COMPONENTS="
1233     indevs
1234     outdevs
1235 "
1236 AVFILTER_COMPONENTS="
1237     filters
1238 "
1239 AVFORMAT_COMPONENTS="
1240     demuxers
1241     muxers
1242     protocols
1243 "
1244
1245 AVRESAMPLE_COMPONENTS=""
1246 AVUTIL_COMPONENTS=""
1247
1248 COMPONENT_LIST="
1249     $AVCODEC_COMPONENTS
1250     $AVDEVICE_COMPONENTS
1251     $AVFILTER_COMPONENTS
1252     $AVFORMAT_COMPONENTS
1253     $AVRESAMPLE_COMPONENTS
1254     $AVUTIL_COMPONENTS
1255 "
1256
1257 EXAMPLE_LIST="
1258     decode_audio_example
1259     decode_video_example
1260     encode_audio_example
1261     encode_video_example
1262     filter_audio_example
1263     metadata_example
1264     output_example
1265     qsvdec_example
1266     transcode_aac_example
1267 "
1268
1269 # catchall list of things that require external libs to link
1270 EXTRALIBS_LIST="
1271     cpu_init
1272     cws2fws
1273 "
1274
1275 HWACCEL_LIBRARY_NONFREE_LIST="
1276     cuda
1277     cuvid
1278     libnpp
1279 "
1280 HWACCEL_LIBRARY_LIST="
1281     $HWACCEL_LIBRARY_NONFREE_LIST
1282     d3d11va
1283     dxva2
1284     libmfx
1285     mmal
1286     nvenc
1287     omx
1288     vaapi
1289     vda
1290     vdpau
1291 "
1292
1293 EXTERNAL_LIBRARY_GPL_LIST="
1294     libcdio
1295     libx264
1296     libx265
1297     libxavs
1298     libxvid
1299 "
1300
1301 EXTERNAL_LIBRARY_NONFREE_LIST="
1302     libfaac
1303     libfdk_aac
1304     openssl
1305 "
1306
1307 EXTERNAL_LIBRARY_VERSION3_LIST="
1308     libopencore_amrnb
1309     libopencore_amrwb
1310     libvo_aacenc
1311     libvo_amrwbenc
1312 "
1313
1314 EXTERNAL_LIBRARY_LIST="
1315     $EXTERNAL_LIBRARY_GPL_LIST
1316     $EXTERNAL_LIBRARY_NONFREE_LIST
1317     $EXTERNAL_LIBRARY_VERSION3_LIST
1318     avisynth
1319     avxsynth
1320     frei0r
1321     gnutls
1322     libbs2b
1323     libdc1394
1324     libdcadec
1325     libfontconfig
1326     libfreetype
1327     libgsm
1328     libhdcd
1329     libilbc
1330     libjack
1331     libkvazaar
1332     libmp3lame
1333     libopencv
1334     libopenh264
1335     libopenjpeg
1336     libopus
1337     libpulse
1338     librtmp
1339     libschroedinger
1340     libsnappy
1341     libspeex
1342     libtheora
1343     libtwolame
1344     libvorbis
1345     libvpx
1346     libwavpack
1347     libwebp
1348     libxcb
1349     libxcb_shm
1350     libxcb_xfixes
1351 "
1352
1353 SYSTEM_LIBRARY_LIST="
1354     bzlib
1355     zlib
1356 "
1357
1358 FEATURE_LIST="
1359     gray
1360     hardcoded_tables
1361     omx_rpi
1362     runtime_cpudetect
1363     safe_bitstream_reader
1364     shared
1365     small
1366     sram
1367     static
1368     swscale_alpha
1369 "
1370
1371 LIBRARY_LIST="
1372     avcodec
1373     avdevice
1374     avfilter
1375     avformat
1376     avresample
1377     avutil
1378     swscale
1379 "
1380
1381 LICENSE_LIST="
1382     gpl
1383     nonfree
1384     version3
1385 "
1386
1387 PROGRAM_LIST="
1388     avconv
1389     avplay
1390     avprobe
1391 "
1392
1393 SUBSYSTEM_LIST="
1394     dct
1395     doc
1396     error_resilience
1397     faan
1398     fft
1399     lsp
1400     lzo
1401     mdct
1402     network
1403     rdft
1404 "
1405
1406 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1407 CONFIG_LIST="
1408     $EXAMPLE_LIST
1409     $EXTERNAL_LIBRARY_LIST
1410     $HWACCEL_LIBRARY_LIST
1411     $FEATURE_LIST
1412     $LICENSE_LIST
1413     $LIBRARY_LIST
1414     $PROGRAM_LIST
1415     $SUBSYSTEM_LIST
1416     $SYSTEM_LIBRARY_LIST
1417     neon_clobber_test
1418     pic
1419     pod2man
1420     texi2html
1421     thumb
1422     valgrind_backtrace
1423     xmm_clobber_test
1424     $COMPONENT_LIST
1425 "
1426
1427 THREADS_LIST="
1428     pthreads
1429     w32threads
1430 "
1431
1432 ATOMICS_LIST="
1433     atomics_gcc
1434     atomics_suncc
1435     atomics_win32
1436 "
1437
1438 ARCH_LIST="
1439     aarch64
1440     alpha
1441     arm
1442     avr32
1443     avr32_ap
1444     avr32_uc
1445     bfin
1446     ia64
1447     m68k
1448     mips
1449     mips64
1450     parisc
1451     ppc
1452     ppc64
1453     s390
1454     sh4
1455     sparc
1456     sparc64
1457     tilegx
1458     tilepro
1459     tomi
1460     x86
1461     x86_32
1462     x86_64
1463 "
1464
1465 ARCH_EXT_LIST_ARM="
1466     armv5te
1467     armv6
1468     armv6t2
1469     armv8
1470     neon
1471     vfp
1472     vfpv3
1473 "
1474
1475 ARCH_EXT_LIST_X86_SIMD="
1476     amd3dnow
1477     amd3dnowext
1478     avx
1479     avx2
1480     fma3
1481     fma4
1482     mmx
1483     mmxext
1484     sse
1485     sse2
1486     sse3
1487     sse4
1488     sse42
1489     ssse3
1490     xop
1491 "
1492
1493 ARCH_EXT_LIST_PPC="
1494     altivec
1495     dcbzl
1496     ldbrx
1497     power8
1498     ppc4xx
1499     vsx
1500 "
1501
1502 ARCH_EXT_LIST_X86="
1503     $ARCH_EXT_LIST_X86_SIMD
1504     cpunop
1505     i686
1506 "
1507
1508 ARCH_EXT_LIST_MIPS="
1509     loongson
1510     mips32r1
1511     mips64r1
1512     mips32r2
1513     mips64r2
1514     mips32r6
1515     mips64r6
1516 "
1517
1518 ARCH_EXT_LIST="
1519     $ARCH_EXT_LIST_ARM
1520     $ARCH_EXT_LIST_MIPS
1521     $ARCH_EXT_LIST_PPC
1522     $ARCH_EXT_LIST_X86
1523     vis
1524 "
1525
1526 ARCH_FEATURES="
1527     aligned_stack
1528     fast_64bit
1529     fast_clz
1530     fast_cmov
1531     local_aligned_8
1532     local_aligned_16
1533     local_aligned_32
1534     simd_align_16
1535     simd_align_32
1536 "
1537
1538 BUILTIN_LIST="
1539     atomic_cas_ptr
1540     machine_rw_barrier
1541     MemoryBarrier
1542     mm_empty
1543     rdtsc
1544     sem_timedwait
1545     sync_val_compare_and_swap
1546 "
1547 HAVE_LIST_CMDLINE="
1548     inline_asm
1549     symver
1550     x86asm
1551 "
1552
1553 HAVE_LIST_PUB="
1554     bigendian
1555     fast_unaligned
1556 "
1557
1558 HEADERS_LIST="
1559     AVFoundation_AVFoundation_h
1560     arpa_inet_h
1561     cdio_paranoia_h
1562     cdio_paranoia_paranoia_h
1563     dispatch_dispatch_h
1564     dev_bktr_ioctl_bt848_h
1565     dev_bktr_ioctl_meteor_h
1566     dev_ic_bt8xx_h
1567     dev_video_bktr_ioctl_bt848_h
1568     dev_video_meteor_ioctl_meteor_h
1569     direct_h
1570     dxgidebug_h
1571     dxva_h
1572     gsm_h
1573     io_h
1574     mach_mach_time_h
1575     machine_ioctl_bt848_h
1576     machine_ioctl_meteor_h
1577     malloc_h
1578     poll_h
1579     soundcard_h
1580     stdatomic_h
1581     sys_param_h
1582     sys_resource_h
1583     sys_select_h
1584     sys_soundcard_h
1585     sys_time_h
1586     sys_un_h
1587     sys_videoio_h
1588     unistd_h
1589     valgrind_valgrind_h
1590     windows_h
1591     winsock2_h
1592 "
1593
1594 INTRINSICS_LIST="
1595     intrinsics_neon
1596 "
1597
1598 MATH_FUNCS="
1599     atanf
1600     atan2f
1601     cbrtf
1602     cosf
1603     exp2
1604     exp2f
1605     expf
1606     isinf
1607     isnan
1608     ldexpf
1609     llrint
1610     llrintf
1611     log2
1612     log2f
1613     log10f
1614     lrint
1615     lrintf
1616     powf
1617     rint
1618     round
1619     roundf
1620     sinf
1621     trunc
1622     truncf
1623 "
1624
1625 SYSTEM_FUNCS="
1626     aligned_malloc
1627     clock_gettime
1628     closesocket
1629     CommandLineToArgvW
1630     CryptGenRandom
1631     fcntl
1632     fork
1633     getaddrinfo
1634     gethrtime
1635     getopt
1636     GetProcessAffinityMask
1637     GetProcessMemoryInfo
1638     GetProcessTimes
1639     getrusage
1640     GetSystemTimeAsFileTime
1641     gettimeofday
1642     gmtime_r
1643     inet_aton
1644     isatty
1645     localtime_r
1646     mach_absolute_time
1647     MapViewOfFile
1648     memalign
1649     mmap
1650     mprotect
1651     nanosleep
1652     posix_memalign
1653     sched_getaffinity
1654     SetConsoleTextAttribute
1655     setmode
1656     setrlimit
1657     Sleep
1658     strerror_r
1659     sysconf
1660     sysctl
1661     usleep
1662     VirtualAlloc
1663 "
1664
1665 TOOLCHAIN_FEATURES="
1666     as_arch_directive
1667     as_fpu_directive
1668     as_func
1669     as_object_arch
1670     asm_mod_q
1671     attribute_may_alias
1672     attribute_packed
1673     blocks_extension
1674     ebp_available
1675     ebx_available
1676     gnu_as
1677     ibm_asm
1678     inline_asm_labels
1679     pragma_deprecated
1680     symver_asm_label
1681     symver_gnu_asm
1682     vfp_args
1683     xform_asm
1684     xmm_clobbers
1685 "
1686
1687 TYPES_LIST="
1688     CONDITION_VARIABLE_Ptr
1689     CUVIDDECODECREATEINFO_bitDepthMinus8
1690     socklen_t
1691     struct_addrinfo
1692     struct_group_source_req
1693     struct_ip_mreq_source
1694     struct_ipv6_mreq
1695     struct_pollfd
1696     struct_rusage_ru_maxrss
1697     struct_sockaddr_in6
1698     struct_sockaddr_sa_len
1699     struct_sockaddr_storage
1700     struct_v4l2_frmivalenum_discrete
1701 "
1702
1703 HAVE_LIST="
1704     $ARCH_EXT_LIST
1705     $(add_suffix _external $ARCH_EXT_LIST)
1706     $(add_suffix _inline   $ARCH_EXT_LIST)
1707     $ARCH_FEATURES
1708     $BUILTIN_LIST
1709     $HAVE_LIST_CMDLINE
1710     $HAVE_LIST_PUB
1711     $HEADERS_LIST
1712     $INTRINSICS_LIST
1713     $MATH_FUNCS
1714     $SYSTEM_FUNCS
1715     $THREADS_LIST
1716     $TOOLCHAIN_FEATURES
1717     $TYPES_LIST
1718     dos_paths
1719     libc_msvcrt
1720     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1721     sdl
1722     section_data_rel_ro
1723     threads
1724     uwp
1725     vaapi_drm
1726     vaapi_x11
1727     vdpau_x11
1728 "
1729
1730 # options emitted with CONFIG_ prefix but not available on the command line
1731 CONFIG_EXTRA="
1732     aandcttables
1733     ac3dsp
1734     adts_header
1735     audio_frame_queue
1736     audiodsp
1737     blockdsp
1738     bswapdsp
1739     cabac
1740     cbs
1741     cbs_h264
1742     cbs_h265
1743     cbs_mpeg2
1744     dirac_parse
1745     dvprofile
1746     faandct
1747     faanidct
1748     fdctdsp
1749     flacdsp
1750     fmtconvert
1751     g722dsp
1752     gmp
1753     golomb
1754     gplv3
1755     h263dsp
1756     h264chroma
1757     h264dsp
1758     h264parse
1759     h264pred
1760     h264qpel
1761     hevcparse
1762     hpeldsp
1763     huffman
1764     huffyuvdsp
1765     huffyuvencdsp
1766     idctdsp
1767     iirfilter
1768     imdct15
1769     intrax8
1770     iso_media
1771     ividsp
1772     jpegtables
1773     lgplv3
1774     libx262
1775     libxcb_shape
1776     lpc
1777     lzf
1778     me_cmp
1779     mpeg_er
1780     mpegaudio
1781     mpegaudiodsp
1782     mpegaudioheader
1783     mpegvideo
1784     mpegvideoenc
1785     mss34dsp
1786     pixblockdsp
1787     qpeldsp
1788     qsv
1789     qsvdec
1790     qsvenc
1791     qsvvpp
1792     rangecoder
1793     riffdec
1794     riffenc
1795     rtpdec
1796     rtpenc_chain
1797     rv34dsp
1798     sinewin
1799     snappy
1800     srtp
1801     startcode
1802     texturedsp
1803     texturedspenc
1804     tpeldsp
1805     vaapi_encode
1806     vc1dsp
1807     videodsp
1808     vp3dsp
1809     vp56dsp
1810     vp8dsp
1811     wma_freqs
1812     wmv2dsp
1813 "
1814
1815 CMDLINE_SELECT="
1816     $ARCH_EXT_LIST
1817     $CONFIG_LIST
1818     $HAVE_LIST_CMDLINE
1819     $THREADS_LIST
1820     asm
1821     cross_compile
1822     debug
1823     extra_warnings
1824     logging
1825     lto
1826     optimizations
1827     rpath
1828 "
1829
1830 PATHS_LIST="
1831     bindir
1832     datadir
1833     docdir
1834     incdir
1835     libdir
1836     mandir
1837     prefix
1838     shlibdir
1839 "
1840
1841 CMDLINE_SET="
1842     $PATHS_LIST
1843     ar
1844     arch
1845     as
1846     cc
1847     objcc
1848     cpu
1849     cross_prefix
1850     custom_allocator
1851     dep_cc
1852     env
1853     extra_version
1854     host_cc
1855     host_cflags
1856     host_extralibs
1857     host_ld
1858     host_ldflags
1859     host_os
1860     ignore_tests
1861     ld
1862     logfile
1863     malloc_prefix
1864     nm
1865     optflags
1866     pkg_config
1867     pkg_config_flags
1868     random_seed
1869     samples
1870     sysinclude
1871     sysroot
1872     target_exec
1873     target_os
1874     target_path
1875     target_samples
1876     toolchain
1877     x86asmexe
1878 "
1879
1880 CMDLINE_APPEND="
1881     extra_cflags
1882     extra_objcflags
1883     host_cppflags
1884 "
1885
1886 # code dependency declarations
1887
1888 # architecture extensions
1889
1890 armv5te_deps="arm"
1891 armv6_deps="arm"
1892 armv6t2_deps="arm"
1893 armv8_deps="aarch64"
1894 neon_deps_any="aarch64 arm"
1895 intrinsics_neon_deps="neon"
1896 vfp_deps_any="aarch64 arm"
1897 vfpv3_deps="vfp"
1898
1899 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1900
1901 altivec_deps="ppc"
1902 dcbzl_deps="ppc"
1903 ldbrx_deps="ppc"
1904 ppc4xx_deps="ppc"
1905 vsx_deps="altivec"
1906 power8_deps="vsx"
1907
1908 loongson_deps="mips"
1909 mips32r1_deps="mips32"
1910 mips32r2_deps="mips32"
1911 mips32r6_deps="mips32"
1912 mips64r1_deps="mips64"
1913 mips64r2_deps="mips64"
1914 mips64r6_deps="mips64"
1915
1916 vis_deps="sparc"
1917
1918 cpunop_deps="i686"
1919 x86_64_select="i686"
1920 x86_64_suggest="fast_cmov"
1921
1922 amd3dnow_deps="mmx"
1923 amd3dnowext_deps="amd3dnow"
1924 i686_deps="x86"
1925 mmx_deps="x86"
1926 mmxext_deps="mmx"
1927 sse_deps="mmxext"
1928 sse2_deps="sse"
1929 sse3_deps="sse2"
1930 ssse3_deps="sse3"
1931 sse4_deps="ssse3"
1932 sse42_deps="sse4"
1933 avx_deps="sse42"
1934 xop_deps="avx"
1935 fma3_deps="avx"
1936 fma4_deps="avx"
1937 avx2_deps="avx"
1938
1939 mmx_external_deps="x86asm"
1940 mmx_inline_deps="inline_asm x86"
1941 mmx_suggest="mmx_external mmx_inline"
1942
1943 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1944     eval dep=\$${ext}_deps
1945     eval ${ext}_external_deps='"${dep}_external"'
1946     eval ${ext}_inline_deps='"${dep}_inline"'
1947     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1948 done
1949
1950 aligned_stack_if_any="aarch64 ppc x86"
1951 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1952 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1953 fast_unaligned_if_any="aarch64 ppc x86"
1954 simd_align_16_if_any="altivec neon sse"
1955 simd_align_32_if_any="avx"
1956
1957 # system capabilities
1958 symver_if_any="symver_asm_label symver_gnu_asm"
1959 valgrind_backtrace_conflict="optimizations"
1960 valgrind_backtrace_deps="valgrind_valgrind_h"
1961
1962 # threading support
1963 atomics_gcc_if="sync_val_compare_and_swap"
1964 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1965 atomics_win32_if="MemoryBarrier"
1966 atomics_native_if_any="$ATOMICS_LIST"
1967 w32threads_deps="atomics_native"
1968 threads_if_any="$THREADS_LIST"
1969
1970 # subsystems
1971 cbs_h264_select="cbs golomb"
1972 cbs_h265_select="cbs golomb"
1973 cbs_mpeg2_select="cbs"
1974 dct_select="rdft"
1975 dirac_parse_select="golomb"
1976 error_resilience_select="me_cmp"
1977 faandct_deps="faan"
1978 faandct_select="fdctdsp"
1979 faanidct_deps="faan"
1980 faanidct_select="idctdsp"
1981 h264dsp_select="startcode"
1982 hevcparse_select="golomb"
1983 intrax8_select="blockdsp idctdsp"
1984 mdct_select="fft"
1985 rdft_select="fft"
1986 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1987 mpeg_er_select="error_resilience"
1988 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1989 mpegaudiodsp_select="dct"
1990 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1991 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1992 vc1dsp_select="h264chroma qpeldsp startcode"
1993
1994 # decoders / encoders
1995 aac_decoder_select="adts_header imdct15 mdct sinewin"
1996 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1997 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1998 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1999 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2000 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2001 adpcm_g722_decoder_select="g722dsp"
2002 adpcm_g722_encoder_select="g722dsp"
2003 aic_decoder_select="golomb idctdsp"
2004 alac_encoder_select="lpc"
2005 als_decoder_select="bswapdsp"
2006 amrnb_decoder_select="lsp"
2007 amrwb_decoder_select="lsp"
2008 amv_decoder_select="sp5x_decoder"
2009 ape_decoder_select="bswapdsp"
2010 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2011 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2012 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2013 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2014 atrac1_decoder_select="mdct sinewin"
2015 atrac3_decoder_select="mdct"
2016 atrac3p_decoder_select="mdct sinewin"
2017 bink_decoder_select="blockdsp hpeldsp"
2018 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2019 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2020 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2021 clearvideo_decoder_select="idctdsp"
2022 cllc_decoder_select="bswapdsp"
2023 comfortnoise_encoder_select="lpc"
2024 cook_decoder_select="audiodsp mdct sinewin"
2025 cscd_decoder_select="lzo"
2026 cscd_decoder_suggest="zlib"
2027 dca_decoder_select="fmtconvert mdct"
2028 dds_decoder_select="texturedsp"
2029 dnxhd_decoder_select="blockdsp idctdsp"
2030 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2031 dvvideo_decoder_select="dvprofile idctdsp"
2032 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2033 dxa_decoder_deps="zlib"
2034 dxv_decoder_select="lzf texturedsp"
2035 eac3_decoder_select="ac3_decoder"
2036 eac3_encoder_select="ac3_encoder"
2037 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2038 eatgq_decoder_select="aandcttables idctdsp"
2039 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2040 exr_decoder_deps="zlib"
2041 ffv1_decoder_select="rangecoder"
2042 ffv1_encoder_select="rangecoder"
2043 ffvhuff_decoder_select="huffyuv_decoder"
2044 ffvhuff_encoder_select="huffyuv_encoder"
2045 fic_decoder_select="golomb"
2046 flac_decoder_select="flacdsp"
2047 flac_encoder_select="bswapdsp flacdsp lpc"
2048 flashsv_decoder_deps="zlib"
2049 flashsv_encoder_deps="zlib"
2050 flashsv2_decoder_deps="zlib"
2051 flv_decoder_select="h263_decoder"
2052 flv_encoder_select="h263_encoder"
2053 fourxm_decoder_select="blockdsp bswapdsp"
2054 fraps_decoder_select="bswapdsp huffman"
2055 g2m_decoder_deps="zlib"
2056 g2m_decoder_select="blockdsp idctdsp jpegtables"
2057 h261_decoder_select="mpeg_er mpegvideo"
2058 h261_encoder_select="aandcttables mpegvideoenc"
2059 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2060 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2061 h263i_decoder_select="h263_decoder"
2062 h263p_encoder_select="h263_encoder"
2063 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2064 h264_decoder_suggest="error_resilience"
2065 hap_decoder_select="snappy texturedsp"
2066 hap_encoder_deps="libsnappy"
2067 hap_encoder_select="texturedspenc"
2068 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2069 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2070 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2071 iac_decoder_select="imc_decoder"
2072 imc_decoder_select="bswapdsp fft mdct sinewin"
2073 indeo3_decoder_select="hpeldsp"
2074 indeo4_decoder_select="ividsp"
2075 indeo5_decoder_select="ividsp"
2076 interplay_video_decoder_select="hpeldsp"
2077 jpegls_decoder_select="mjpeg_decoder"
2078 jv_decoder_select="blockdsp"
2079 lagarith_decoder_select="huffyuvdsp"
2080 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2081 magicyuv_decoder_select="huffyuvdsp"
2082 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2083 metasound_decoder_select="lsp mdct sinewin"
2084 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2085 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2086 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2087 mjpegb_decoder_select="mjpeg_decoder"
2088 mlp_decoder_select="mlp_parser"
2089 motionpixels_decoder_select="bswapdsp"
2090 mp1_decoder_select="mpegaudio"
2091 mp1float_decoder_select="mpegaudio"
2092 mp2_decoder_select="mpegaudio"
2093 mp2float_decoder_select="mpegaudio"
2094 mp3_decoder_select="mpegaudio"
2095 mp3adu_decoder_select="mpegaudio"
2096 mp3adufloat_decoder_select="mpegaudio"
2097 mp3float_decoder_select="mpegaudio"
2098 mp3on4_decoder_select="mpegaudio"
2099 mp3on4float_decoder_select="mpegaudio"
2100 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2101 mpc8_decoder_select="mpegaudiodsp"
2102 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2103 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2104 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2105 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2106 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2107 mpeg4_encoder_select="h263_encoder"
2108 msa1_decoder_select="mss34dsp"
2109 msmpeg4v1_decoder_select="h263_decoder"
2110 msmpeg4v2_decoder_select="h263_decoder"
2111 msmpeg4v2_encoder_select="h263_encoder"
2112 msmpeg4v3_decoder_select="h263_decoder"
2113 msmpeg4v3_encoder_select="h263_encoder"
2114 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2115 mts2_decoder_select="mss34dsp"
2116 mxpeg_decoder_select="mjpeg_decoder"
2117 nellymoser_decoder_select="mdct sinewin"
2118 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2119 nuv_decoder_select="idctdsp lzo"
2120 on2avc_decoder_select="mdct"
2121 opus_decoder_deps="avresample"
2122 opus_decoder_select="imdct15"
2123 png_decoder_deps="zlib"
2124 png_encoder_deps="zlib"
2125 png_encoder_select="huffyuvencdsp"
2126 prores_decoder_select="idctdsp"
2127 prores_encoder_select="fdctdsp"
2128 qcelp_decoder_select="lsp"
2129 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2130 ra_144_encoder_select="audio_frame_queue lpc"
2131 ralf_decoder_select="golomb"
2132 rscc_decoder_deps="zlib"
2133 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2134 rv10_encoder_select="h263_encoder"
2135 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2136 rv20_encoder_select="h263_encoder"
2137 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2138 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2139 screenpresso_decoder_deps="zlib"
2140 sipr_decoder_select="lsp"
2141 sp5x_decoder_select="mjpeg_decoder"
2142 svq1_decoder_select="hpeldsp"
2143 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2144 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2145 svq3_decoder_suggest="zlib"
2146 tak_decoder_select="audiodsp"
2147 tdsc_decoder_deps="zlib"
2148 tdsc_decoder_select="mjpeg_decoder"
2149 theora_decoder_select="vp3_decoder"
2150 thp_decoder_select="mjpeg_decoder"
2151 tiff_decoder_suggest="zlib"
2152 tiff_encoder_suggest="zlib"
2153 truehd_decoder_select="mlp_decoder"
2154 truemotion2_decoder_select="bswapdsp"
2155 truespeech_decoder_select="bswapdsp"
2156 tscc_decoder_deps="zlib"
2157 txd_decoder_select="texturedsp"
2158 twinvq_decoder_select="mdct lsp sinewin"
2159 utvideo_decoder_select="bswapdsp huffyuvdsp"
2160 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2161 vble_decoder_select="huffyuvdsp"
2162 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2163 vc1image_decoder_select="vc1_decoder"
2164 vorbis_decoder_select="mdct"
2165 vorbis_encoder_select="mdct"
2166 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2167 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2168 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2169 vp6a_decoder_select="vp6_decoder"
2170 vp6f_decoder_select="vp6_decoder"
2171 vp7_decoder_select="h264pred videodsp vp8dsp"
2172 vp8_decoder_select="h264pred videodsp vp8dsp"
2173 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2174 webp_decoder_select="vp8_decoder"
2175 wmapro_decoder_select="mdct sinewin wma_freqs"
2176 wmav1_decoder_select="mdct sinewin wma_freqs"
2177 wmav1_encoder_select="mdct sinewin wma_freqs"
2178 wmav2_decoder_select="mdct sinewin wma_freqs"
2179 wmav2_encoder_select="mdct sinewin wma_freqs"
2180 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2181 wmv1_decoder_select="h263_decoder"
2182 wmv1_encoder_select="h263_encoder"
2183 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2184 wmv2_encoder_select="h263_encoder wmv2dsp"
2185 wmv3_decoder_select="vc1_decoder"
2186 wmv3image_decoder_select="wmv3_decoder"
2187 zerocodec_decoder_deps="zlib"
2188 zlib_decoder_deps="zlib"
2189 zlib_encoder_deps="zlib"
2190 zmbv_decoder_deps="zlib"
2191 zmbv_encoder_deps="zlib"
2192
2193 # hardware accelerators
2194 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2195 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2196 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2197 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2198
2199 h263_vaapi_hwaccel_deps="vaapi"
2200 h263_vaapi_hwaccel_select="h263_decoder"
2201 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2202 h264_cuvid_hwaccel_select="h264_decoder"
2203 h264_d3d11va_hwaccel_deps="d3d11va"
2204 h264_d3d11va_hwaccel_select="h264_decoder"
2205 h264_d3d11va2_hwaccel_deps="d3d11va"
2206 h264_d3d11va2_hwaccel_select="h264_decoder"
2207 h264_dxva2_hwaccel_deps="dxva2"
2208 h264_dxva2_hwaccel_select="h264_decoder"
2209 h264_mmal_hwaccel_deps="mmal"
2210 h264_qsv_hwaccel_deps="libmfx"
2211 h264_vaapi_hwaccel_deps="vaapi"
2212 h264_vaapi_hwaccel_select="h264_decoder"
2213 h264_vda_hwaccel_deps="vda"
2214 h264_vda_hwaccel_select="h264_decoder"
2215 h264_vda_old_hwaccel_deps="vda"
2216 h264_vda_old_hwaccel_select="h264_decoder"
2217 h264_vdpau_hwaccel_deps="vdpau"
2218 h264_vdpau_hwaccel_select="h264_decoder"
2219 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2220 hevc_cuvid_hwaccel_select="hevc_decoder"
2221 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2222 hevc_d3d11va_hwaccel_select="hevc_decoder"
2223 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2224 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2225 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2226 hevc_dxva2_hwaccel_select="hevc_decoder"
2227 hevc_qsv_hwaccel_deps="libmfx"
2228 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2229 hevc_vaapi_hwaccel_select="hevc_decoder"
2230 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2231 hevc_vdpau_hwaccel_select="hevc_decoder"
2232 mpeg1_vdpau_hwaccel_deps="vdpau"
2233 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2234 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2235 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2236 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2237 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2238 mpeg2_dxva2_hwaccel_deps="dxva2"
2239 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2240 mpeg2_mmal_hwaccel_deps="mmal"
2241 mpeg2_qsv_hwaccel_deps="libmfx"
2242 mpeg2_vaapi_hwaccel_deps="vaapi"
2243 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2244 mpeg2_vdpau_hwaccel_deps="vdpau"
2245 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2246 mpeg4_vaapi_hwaccel_deps="vaapi"
2247 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2248 mpeg4_vdpau_hwaccel_deps="vdpau"
2249 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2250 vc1_d3d11va_hwaccel_deps="d3d11va"
2251 vc1_d3d11va_hwaccel_select="vc1_decoder"
2252 vc1_d3d11va2_hwaccel_deps="d3d11va"
2253 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2254 vc1_dxva2_hwaccel_deps="dxva2"
2255 vc1_dxva2_hwaccel_select="vc1_decoder"
2256 vc1_mmal_hwaccel_deps="mmal"
2257 vc1_qsv_hwaccel_deps="libmfx"
2258 vc1_vaapi_hwaccel_deps="vaapi"
2259 vc1_vaapi_hwaccel_select="vc1_decoder"
2260 vc1_vdpau_hwaccel_deps="vdpau"
2261 vc1_vdpau_hwaccel_select="vc1_decoder"
2262 vp8_qsv_hwaccel_deps="libmfx"
2263 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2264 vp8_vaapi_hwaccel_select="vp8_decoder"
2265 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2266 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2267 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2268 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2269 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2270
2271 # hardware-accelerated codecs
2272 nvenc_deps_any="libdl LoadLibrary"
2273 omx_deps="libdl pthreads"
2274 omx_rpi_select="omx"
2275 qsv_deps="libmfx"
2276 qsvdec_select="qsv"
2277 qsvenc_select="qsv"
2278 qsvvpp_select="qsv"
2279 vaapi_encode_deps="vaapi"
2280
2281 hwupload_cuda_filter_deps="cuda"
2282 scale_npp_filter_deps="cuda libnpp"
2283
2284 h264_mmal_decoder_deps="mmal"
2285 h264_nvenc_encoder_deps="nvenc"
2286 h264_omx_encoder_deps="omx"
2287 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2288 h264_qsv_encoder_select="qsvenc"
2289 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2290 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2291 hevc_nvenc_encoder_deps="nvenc"
2292 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2293 hevc_qsv_encoder_select="hevcparse qsvenc"
2294 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2295 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2296 mjpeg_qsv_encoder_deps="libmfx"
2297 mjpeg_qsv_encoder_select="qsvenc"
2298 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2299 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2300 mpeg2_mmal_decoder_deps="mmal"
2301 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2302 mpeg2_qsv_encoder_select="qsvenc"
2303 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2304 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2305 mpeg4_omx_encoder_deps="omx"
2306 vc1_mmal_decoder_deps="mmal"
2307 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2308 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2309 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2310 vp8_vaapi_encoder_select="vaapi_encode"
2311 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2312 vp9_vaapi_encoder_select="vaapi_encode"
2313
2314 nvenc_h264_encoder_select="h264_nvenc_encoder"
2315 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2316
2317 # parsers
2318 aac_parser_select="adts_header"
2319 h264_parser_select="golomb h264dsp h264parse"
2320 hevc_parser_select="hevcparse"
2321 mpegaudio_parser_select="mpegaudioheader"
2322 mpegvideo_parser_select="mpegvideo"
2323 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2324 vc1_parser_select="vc1dsp"
2325
2326 # bitstream_filters
2327 aac_adtstoasc_bsf_select="adts_header"
2328 h264_metadata_bsf_select="cbs_h264"
2329 h264_redundant_pps_bsf_select="cbs_h264"
2330 hevc_metadata_bsf_select="cbs_h265"
2331 mjpeg2jpeg_bsf_select="jpegtables"
2332 mpeg2_metadata_bsf_select="cbs_mpeg2"
2333 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2334
2335 # external libraries
2336 avisynth_deps="LoadLibrary"
2337 avxsynth_deps="libdl"
2338 avisynth_demuxer_deps_any="avisynth avxsynth"
2339 avisynth_demuxer_select="riffdec"
2340 libdcadec_decoder_deps="libdcadec"
2341 libfaac_encoder_deps="libfaac"
2342 libfaac_encoder_select="audio_frame_queue"
2343 libfdk_aac_decoder_deps="libfdk_aac"
2344 libfdk_aac_encoder_deps="libfdk_aac"
2345 libfdk_aac_encoder_select="audio_frame_queue"
2346 libgsm_decoder_deps="libgsm"
2347 libgsm_encoder_deps="libgsm"
2348 libgsm_ms_decoder_deps="libgsm"
2349 libgsm_ms_encoder_deps="libgsm"
2350 libilbc_decoder_deps="libilbc"
2351 libilbc_encoder_deps="libilbc"
2352 libkvazaar_encoder_deps="libkvazaar"
2353 libmp3lame_encoder_deps="libmp3lame"
2354 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2355 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2356 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2357 libopencore_amrnb_encoder_select="audio_frame_queue"
2358 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2359 libopenh264_decoder_deps="libopenh264"
2360 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2361 libopenh264_encoder_deps="libopenh264"
2362 libopenjpeg_decoder_deps="libopenjpeg"
2363 libopenjpeg_encoder_deps="libopenjpeg"
2364 libopus_decoder_deps="libopus"
2365 libopus_encoder_deps="libopus"
2366 libopus_encoder_select="audio_frame_queue"
2367 libschroedinger_decoder_deps="libschroedinger"
2368 libschroedinger_encoder_deps="libschroedinger"
2369 libspeex_decoder_deps="libspeex"
2370 libspeex_encoder_deps="libspeex"
2371 libspeex_encoder_select="audio_frame_queue"
2372 libtheora_encoder_deps="libtheora"
2373 libtwolame_encoder_deps="libtwolame"
2374 libvo_aacenc_encoder_deps="libvo_aacenc"
2375 libvo_aacenc_encoder_select="audio_frame_queue"
2376 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2377 libvorbis_encoder_deps="libvorbis"
2378 libvorbis_encoder_select="audio_frame_queue"
2379 libvpx_vp8_decoder_deps="libvpx"
2380 libvpx_vp8_encoder_deps="libvpx"
2381 libvpx_vp9_decoder_deps="libvpx"
2382 libvpx_vp9_encoder_deps="libvpx"
2383 libwavpack_encoder_deps="libwavpack"
2384 libwavpack_encoder_select="audio_frame_queue"
2385 libwebp_encoder_deps="libwebp"
2386 libx262_encoder_deps="libx262"
2387 libx264_encoder_deps="libx264"
2388 libx265_encoder_deps="libx265"
2389 libxavs_encoder_deps="libxavs"
2390 libxvid_encoder_deps="libxvid mkstemp"
2391
2392 # demuxers / muxers
2393 ac3_demuxer_select="ac3_parser"
2394 asf_demuxer_select="riffdec"
2395 asf_muxer_select="riffenc"
2396 asf_stream_muxer_select="asf_muxer"
2397 avi_demuxer_select="iso_media riffdec"
2398 avi_muxer_select="riffenc"
2399 caf_demuxer_select="iso_media riffdec"
2400 dash_muxer_select="mp4_muxer"
2401 dirac_demuxer_select="dirac_parser"
2402 dv_demuxer_select="dvprofile"
2403 dv_muxer_select="dvprofile"
2404 dxa_demuxer_select="riffdec"
2405 eac3_demuxer_select="ac3_parser"
2406 f4v_muxer_select="mov_muxer"
2407 flac_demuxer_select="flac_parser"
2408 hds_muxer_select="flv_muxer"
2409 hls_muxer_select="mpegts_muxer"
2410 ipod_muxer_select="mov_muxer"
2411 ismv_muxer_select="mov_muxer"
2412 matroska_audio_muxer_select="matroska_muxer"
2413 matroska_demuxer_select="iso_media riffdec"
2414 matroska_demuxer_suggest="bzlib lzo zlib"
2415 matroska_muxer_select="iso_media riffenc"
2416 mmf_muxer_select="riffenc"
2417 mov_demuxer_select="iso_media riffdec"
2418 mov_demuxer_suggest="zlib"
2419 mov_muxer_select="iso_media riffenc rtpenc_chain"
2420 mp3_demuxer_select="mpegaudio_parser"
2421 mp3_muxer_select="mpegaudioheader"
2422 mp4_muxer_select="mov_muxer"
2423 mpegts_demuxer_select="iso_media"
2424 mpegts_muxer_select="adts_muxer latm_muxer"
2425 mpegtsraw_demuxer_select="mpegts_demuxer"
2426 mxf_d10_muxer_select="mxf_muxer"
2427 nut_muxer_select="riffenc"
2428 nuv_demuxer_select="riffdec"
2429 oga_muxer_select="ogg_muxer"
2430 ogg_demuxer_select="dirac_parse"
2431 opus_muxer_select="ogg_muxer"
2432 psp_muxer_select="mov_muxer"
2433 rtp_demuxer_select="sdp_demuxer"
2434 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2435 rtsp_demuxer_select="http_protocol rtpdec"
2436 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2437 sap_demuxer_select="sdp_demuxer"
2438 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2439 sdp_demuxer_select="rtpdec"
2440 smoothstreaming_muxer_select="ismv_muxer"
2441 spdif_demuxer_select="adts_header"
2442 spdif_muxer_select="adts_header"
2443 spx_muxer_select="ogg_muxer"
2444 swf_demuxer_suggest="zlib"
2445 tak_demuxer_select="tak_parser"
2446 tg2_muxer_select="mov_muxer"
2447 tgp_muxer_select="mov_muxer"
2448 w64_demuxer_select="wav_demuxer"
2449 wav_demuxer_select="riffdec"
2450 wav_muxer_select="riffenc"
2451 webm_muxer_select="iso_media riffenc"
2452 wtv_demuxer_select="mpegts_demuxer riffdec"
2453 xmv_demuxer_select="riffdec"
2454 xwma_demuxer_select="riffdec"
2455
2456 # indevs / outdevs
2457 alsa_indev_deps="alsa"
2458 alsa_outdev_deps="alsa"
2459 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2460 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2461 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2462 dv1394_indev_deps="dv1394"
2463 dv1394_indev_select="dv_demuxer"
2464 fbdev_indev_deps="linux_fb_h"
2465 jack_indev_deps="libjack"
2466 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2467 libcdio_indev_deps="libcdio"
2468 libdc1394_indev_deps="libdc1394"
2469 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2470 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2471 pulse_indev_deps="libpulse"
2472 sndio_indev_deps="sndio"
2473 sndio_outdev_deps="sndio"
2474 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2475 vfwcap_indev_deps="vfw32 vfwcap_defines"
2476 xcbgrab_indev_deps="libxcb libxcb_shape"
2477 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2478
2479 # protocols
2480 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2481 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2482 ffrtmpcrypt_protocol_select="tcp_protocol"
2483 ffrtmphttp_protocol_conflict="librtmp_protocol"
2484 ffrtmphttp_protocol_select="http_protocol"
2485 gopher_protocol_select="network"
2486 http_protocol_select="tcp_protocol"
2487 http_protocol_suggest="zlib"
2488 httpproxy_protocol_select="tcp_protocol"
2489 httpproxy_protocol_suggest="zlib"
2490 https_protocol_select="tls_protocol"
2491 https_protocol_suggest="zlib"
2492 icecast_protocol_select="http_protocol"
2493 librtmp_protocol_deps="librtmp"
2494 librtmpe_protocol_deps="librtmp"
2495 librtmps_protocol_deps="librtmp"
2496 librtmpt_protocol_deps="librtmp"
2497 librtmpte_protocol_deps="librtmp"
2498 mmsh_protocol_select="http_protocol"
2499 mmst_protocol_select="network"
2500 rtmp_protocol_conflict="librtmp_protocol"
2501 rtmp_protocol_select="tcp_protocol"
2502 rtmp_protocol_suggest="zlib"
2503 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2504 rtmpe_protocol_suggest="zlib"
2505 rtmps_protocol_conflict="librtmp_protocol"
2506 rtmps_protocol_select="tls_protocol"
2507 rtmps_protocol_suggest="zlib"
2508 rtmpt_protocol_select="ffrtmphttp_protocol"
2509 rtmpt_protocol_suggest="zlib"
2510 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2511 rtmpte_protocol_suggest="zlib"
2512 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2513 rtmpts_protocol_suggest="zlib"
2514 rtp_protocol_select="udp_protocol"
2515 sctp_protocol_deps="struct_sctp_event_subscribe"
2516 sctp_protocol_select="network"
2517 srtp_protocol_select="rtp_protocol srtp"
2518 tcp_protocol_select="network"
2519 tls_protocol_deps_any="gnutls openssl"
2520 tls_protocol_select="tcp_protocol"
2521 udp_protocol_select="network"
2522 unix_protocol_deps="sys_un_h"
2523 unix_protocol_select="network"
2524
2525 # filters
2526 asyncts_filter_deps="avresample"
2527 blackframe_filter_deps="gpl"
2528 boxblur_filter_deps="gpl"
2529 bs2b_filter_deps="libbs2b"
2530 cropdetect_filter_deps="gpl"
2531 deinterlace_qsv_filter_deps="libmfx"
2532 deinterlace_vaapi_filter_deps="vaapi"
2533 delogo_filter_deps="gpl"
2534 drawtext_filter_deps="libfreetype"
2535 drawtext_filter_suggest="libfontconfig"
2536 frei0r_filter_deps="frei0r libdl"
2537 frei0r_src_filter_deps="frei0r libdl"
2538 hdcd_filter_deps="libhdcd"
2539 hqdn3d_filter_deps="gpl"
2540 interlace_filter_deps="gpl"
2541 movie_filter_deps="avcodec avformat"
2542 ocv_filter_deps="libopencv"
2543 overlay_qsv_filter_deps="libmfx"
2544 overlay_qsv_filter_select="qsvvpp"
2545 resample_filter_deps="avresample"
2546 scale_filter_deps="swscale"
2547 scale_qsv_filter_deps="libmfx"
2548 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2549 vpp_qsv_filter_deps="libmfx"
2550 vpp_qsv_filter_select="qsvvpp"
2551
2552 # examples
2553 decode_audio_example_deps="avcodec avutil"
2554 decode_video_example_deps="avcodec avutil"
2555 encode_audio_example_deps="avcodec avutil"
2556 encode_video_example_deps="avcodec avutil"
2557 filter_audio_example_deps="avfilter avutil"
2558 metadata_example_deps="avformat avutil"
2559 output_example_deps="avcodec avformat avresample avutil swscale"
2560 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2561 transcode_aac_example_deps="avcodec avformat avresample"
2562
2563 # EXTRALIBS_LIST
2564 cpu_init_extralibs="pthreads_extralibs"
2565 cws2fws_extralibs="zlib_extralibs"
2566
2567 # libraries, in linking order
2568 avcodec_deps="avutil"
2569 avcodec_select="null_bsf"
2570 avdevice_deps="avformat avcodec avutil"
2571 avfilter_deps="avutil"
2572 avformat_deps="avcodec avutil"
2573 avformat_suggest="network"
2574 avresample_deps="avutil"
2575 swscale_deps="avutil"
2576
2577 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2578 avdevice_extralibs="libm_extralibs"
2579 avformat_extralibs="libm_extralibs"
2580 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2581 avresample_extralibs="libm_extralibs"
2582 avutil_extralibs="clock_gettime_extralibs cuda_extralibs cuvid_extralibs d3d11va_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2583 swscale_extralibs="libm_extralibs"
2584
2585 # programs
2586 avconv_deps="avcodec avfilter avformat avresample swscale"
2587 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2588                fps_filter null_filter resample_filter scale_filter
2589                trim_filter"
2590 avconv_suggest="psapi shell32"
2591 avplay_deps="avcodec avfilter avformat avresample sdl"
2592 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2593 avplay_suggest="shell32"
2594 avprobe_deps="avcodec avformat"
2595 avprobe_suggest="shell32"
2596
2597 # documentation
2598 pod2man_deps="doc"
2599 texi2html_deps="doc"
2600
2601 # default parameters
2602
2603 logfile="avbuild/config.log"
2604
2605 # installation paths
2606 prefix_default="/usr/local"
2607 bindir_default='${prefix}/bin'
2608 datadir_default='${prefix}/share/avconv'
2609 docdir_default='${prefix}/share/doc/libav'
2610 incdir_default='${prefix}/include'
2611 libdir_default='${prefix}/lib'
2612 mandir_default='${prefix}/share/man'
2613 shlibdir_default="$libdir_default"
2614
2615 # toolchain
2616 ar_default="ar"
2617 cc_default="gcc"
2618 host_cc_default="gcc"
2619 x86asmexe_default="nasm"
2620 ln_s="ln -s -f"
2621 nm_default="nm -g"
2622 pkg_config_default=pkg-config
2623 ranlib="ranlib"
2624 strip="strip"
2625 version_script='--version-script'
2626
2627 # machine
2628 arch_default=$(uname -m)
2629 cpu="generic"
2630 intrinsics="none"
2631
2632 # OS
2633 target_os_default=$(tolower $(uname -s))
2634 host_os=$target_os_default
2635
2636 # configurable options
2637 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2638
2639 enable asm
2640 enable debug
2641 enable doc
2642 enable faan faandct faanidct
2643 enable optimizations
2644 enable safe_bitstream_reader
2645 enable static
2646 enable swscale_alpha
2647 enable valgrind_backtrace
2648
2649 # By default, enable only those hwaccels that have no external dependencies.
2650 enable d3d11va dxva2 vda vdpau
2651
2652 # internal components are enabled by default
2653 enable $EXTRALIBS_LIST
2654
2655 # Avoid external, non-system, libraries getting enabled by dependency resolution
2656 disable $EXTERNAL_LIBRARY_LIST
2657
2658 # build settings
2659 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2660 LIBPREF="lib"
2661 LIBSUF=".a"
2662 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2663 SLIBPREF="lib"
2664 SLIBSUF=".so"
2665 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2666 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2667 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2668 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2669 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2670 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2671 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2672
2673 asflags_filter=echo
2674 cflags_filter=echo
2675 ldflags_filter=echo
2676
2677 AS_C='-c'
2678 AS_O='-o $@'
2679 CC_C='-c'
2680 CC_E='-E -o $@'
2681 CC_O='-o $@'
2682 OBJCC_C='-c'
2683 OBJCC_E='-E -o $@'
2684 OBJCC_O='-o $@'
2685 X86ASM_O='-o $@'
2686 LD_O='-o $@'
2687 LD_LIB='-l%'
2688 LD_PATH='-L'
2689 HOSTCC_C='-c'
2690 HOSTCC_E='-E -o $@'
2691 HOSTCC_O='-o $@'
2692 HOSTLD_O='-o $@'
2693
2694 host_extralibs='-lm'
2695 host_cflags_filter=echo
2696 host_ldflags_filter=echo
2697
2698 target_path='$(CURDIR)'
2699
2700 # since the object filename is not given with the -MM flag, the compiler
2701 # is only able to print the basename, and we must add the path ourselves
2702 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2703 DEPFLAGS='-MM'
2704
2705 mkdir -p avbuild
2706
2707 # find source path
2708 if test -f configure; then
2709     source_path=.
2710 else
2711     source_path=$(cd $(dirname "$0"); pwd)
2712     echo "$source_path" | grep -q '[[:blank:]]' &&
2713         die "Out of tree builds are impossible with whitespace in source path."
2714     test -e "$source_path/config.h" &&
2715         die "Out of tree builds are impossible with config.h in source dir."
2716 fi
2717
2718 for v in "$@"; do
2719     r=${v#*=}
2720     l=${v%"$r"}
2721     r=$(sh_quote "$r")
2722     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2723 done
2724
2725 find_things(){
2726     thing=$1
2727     pattern=$2
2728     file=$source_path/$3
2729     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2730 }
2731
2732 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2733 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2734 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2735 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2736 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2737 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2738 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2739 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2740 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2741
2742 find_things_extern(){
2743     thing=$1
2744     pattern=$2
2745     file=$source_path/$3
2746     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2747 }
2748
2749 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2750 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2751
2752 AVCODEC_COMPONENTS_LIST="
2753     $BSF_LIST
2754     $DECODER_LIST
2755     $ENCODER_LIST
2756     $HWACCEL_LIST
2757     $PARSER_LIST
2758 "
2759
2760 AVDEVICE_COMPONENTS_LIST="
2761     $INDEV_LIST
2762     $OUTDEV_LIST
2763 "
2764
2765 AVFILTER_COMPONENTS_LIST="
2766     $FILTER_LIST
2767 "
2768
2769 AVFORMAT_COMPONENTS_LIST="
2770     $DEMUXER_LIST
2771     $MUXER_LIST
2772     $PROTOCOL_LIST
2773 "
2774
2775 ALL_COMPONENTS="
2776     $AVCODEC_COMPONENTS_LIST
2777     $AVDEVICE_COMPONENTS_LIST
2778     $AVFILTER_COMPONENTS_LIST
2779     $AVFORMAT_COMPONENTS_LIST
2780 "
2781
2782 for n in $COMPONENT_LIST; do
2783     v=$(toupper ${n%s})_LIST
2784     eval enable \$$v
2785     eval ${n}_if_any="\$$v"
2786 done
2787
2788 enable $ARCH_EXT_LIST
2789
2790 die_unknown(){
2791     echo "Unknown option \"$1\"."
2792     echo "See $0 --help for available options."
2793     exit 1
2794 }
2795
2796 print_3_columns() {
2797     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2798 }
2799
2800 show_list() {
2801     suffix=_$1
2802     shift
2803     echo $* | sed s/$suffix//g | print_3_columns
2804     exit 0
2805 }
2806
2807 rand_list(){
2808     IFS=', '
2809     set -- $*
2810     unset IFS
2811     for thing; do
2812         comp=${thing%:*}
2813         prob=${thing#$comp}
2814         prob=${prob#:}
2815         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2816         echo "prob ${prob:-0.5}"
2817         printf '%s\n' $comp
2818     done
2819 }
2820
2821 do_random(){
2822     action=$1
2823     shift
2824     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2825     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2826 }
2827
2828 for opt do
2829     optval="${opt#*=}"
2830     case "$opt" in
2831         --extra-ldflags=*)
2832             add_ldflags $optval
2833         ;;
2834         --extra-ldexeflags=*)
2835             add_ldexeflags $optval
2836         ;;
2837         --extra-ldsoflags=*)
2838             add_ldsoflags $optval
2839         ;;
2840         --extra-libs=*)
2841             add_extralibs $optval
2842         ;;
2843         --disable-devices)
2844             disable $INDEV_LIST $OUTDEV_LIST
2845         ;;
2846         --enable-debug=*)
2847             debuglevel="$optval"
2848         ;;
2849         --disable-programs)
2850             disable $PROGRAM_LIST
2851         ;;
2852         --disable-everything)
2853             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2854         ;;
2855         --disable-all)
2856             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2857             disable $LIBRARY_LIST $PROGRAM_LIST doc
2858         ;;
2859         --enable-random|--disable-random)
2860             action=${opt%%-random}
2861             do_random ${action#--} $COMPONENT_LIST
2862         ;;
2863         --enable-random=*|--disable-random=*)
2864             action=${opt%%-random=*}
2865             do_random ${action#--} $optval
2866         ;;
2867         --enable-*=*|--disable-*=*)
2868             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2869             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2870             eval list=\$$(toupper $thing)_LIST
2871             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2872             $action $(filter "$name" $list)
2873         ;;
2874         --enable-avserver|--disable-avserver*)
2875             warn "avserver has been removed, the ${opt} option is only"\
2876                  "provided for compatibility and will be removed in the future"
2877         ;;
2878         --enable-yasm|--disable-yasm)
2879             warn "The ${opt} option is only provided for compatibility and will be\n"\
2880                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2881             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2882         ;;
2883         --enable-?*|--disable-?*)
2884             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2885             if is_in $option $COMPONENT_LIST; then
2886                 test $action = disable && action=unset
2887                 eval $action \$$(toupper ${option%s})_LIST
2888             elif is_in $option $CMDLINE_SELECT; then
2889                 $action $option
2890             else
2891                 die_unknown $opt
2892             fi
2893         ;;
2894         --list-*)
2895             NAME="${opt#--list-}"
2896             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2897             NAME=${NAME%s}
2898             eval show_list $NAME \$$(toupper $NAME)_LIST
2899         ;;
2900         --help|-h) show_help
2901         ;;
2902         --quiet|-q) quiet=yes
2903         ;;
2904         *)
2905             optname="${opt%%=*}"
2906             optname="${optname#--}"
2907             optname=$(echo "$optname" | sed 's/-/_/g')
2908             if is_in $optname $CMDLINE_SET; then
2909                 eval $optname='$optval'
2910             elif is_in $optname $CMDLINE_APPEND; then
2911                 append $optname "$optval"
2912             else
2913                 die_unknown $opt
2914             fi
2915         ;;
2916     esac
2917 done
2918
2919 for e in $env; do
2920     eval "export $e"
2921 done
2922
2923 disabled logging && logfile=/dev/null
2924
2925 # Die early if licensing-related configure options are incompatible.
2926 die_license_disabled() {
2927     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2928 }
2929
2930 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2931 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2932 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2933
2934 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2935
2936 enabled_all gnutls openssl &&
2937     die "GnuTLS and OpenSSL must not be enabled at the same time."
2938
2939 # Disable all the library-specific components if the library itself
2940 # is disabled, see AVCODEC_LIST and following _LIST variables.
2941
2942 disable_components(){
2943     disabled ${1} && disable $(
2944         eval components="\$$(toupper ${1})_COMPONENTS"
2945         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2946     )
2947 }
2948
2949 map 'disable_components $v' $LIBRARY_LIST
2950
2951 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2952 set >> $logfile
2953
2954 case "$toolchain" in
2955     *-asan)
2956         cc_default="${toolchain%-asan}"
2957         add_cflags  -fsanitize=address
2958         add_ldflags -fsanitize=address
2959     ;;
2960     *-msan)
2961         cc_default="${toolchain%-msan}"
2962         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2963         add_ldflags -fsanitize=memory
2964     ;;
2965     *-tsan)
2966         cc_default="${toolchain%-tsan}"
2967         add_cflags  -fsanitize=thread -fPIE
2968         add_ldflags -fsanitize=thread -pie
2969         case "$toolchain" in
2970             gcc-tsan)
2971                 add_cflags  -fPIC
2972                 add_ldflags -fPIC
2973                 ;;
2974         esac
2975     ;;
2976     *-usan)
2977         cc_default="${toolchain%-usan}"
2978         add_cflags  -fsanitize=undefined
2979         add_ldflags -fsanitize=undefined
2980         case "$toolchain" in
2981             clang-usan)
2982                 add_cflags -O1
2983                 ;;
2984         esac
2985     ;;
2986     valgrind-*)
2987         target_exec_default="valgrind"
2988         case "$toolchain" in
2989             valgrind-massif)
2990                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2991                 ;;
2992             valgrind-memcheck)
2993                 target_exec_args="--track-origins=yes --leak-check=full"
2994                 ;;
2995         esac
2996     ;;
2997     msvc)
2998         # Check whether the current MSVC version needs the C99 converter.
2999         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3000         # support enough of C99 to build libav. Default to the new
3001         # behaviour if the regexp was unable to match anything, since this
3002         # successfully parses the version number of existing supported
3003         # versions that require the converter (MSVC 2010 and 2012).
3004         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3005         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3006             cc_default="cl"
3007         else
3008             cc_default="c99wrap cl"
3009         fi
3010         ld_default="$source_path/compat/windows/mslink"
3011         nm_default="dumpbin -symbols"
3012         ar_default="lib"
3013         case "$arch" in
3014         arm*)
3015             as_default="armasm"
3016             ;;
3017         esac
3018         target_os_default="win32"
3019         # Use a relative path for TMPDIR. This makes sure all the
3020         # ffconf temp files are written with a relative path, avoiding
3021         # issues with msys/win32 path conversion for MSVC parameters
3022         # such as -Fo<file> or -out:<file>.
3023         TMPDIR=.
3024     ;;
3025     icl)
3026         cc_default="icl"
3027         ld_default="xilink"
3028         nm_default="dumpbin -symbols"
3029         ar_default="xilib"
3030         target_os_default="win32"
3031         TMPDIR=.
3032     ;;
3033     gcov)
3034         add_cflags  -fprofile-arcs -ftest-coverage
3035         add_ldflags -fprofile-arcs -ftest-coverage
3036     ;;
3037     llvm-cov)
3038         add_cflags -fprofile-arcs -ftest-coverage
3039         add_ldflags --coverage
3040     ;;
3041     hardened)
3042         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3043         add_cflags   -fno-strict-overflow -fstack-protector-all
3044         add_ldflags  -Wl,-z,relro -Wl,-z,now
3045     ;;
3046     ?*)
3047         die "Unknown toolchain $toolchain"
3048     ;;
3049 esac
3050
3051 test -n "$cross_prefix" && enable cross_compile
3052
3053 if enabled cross_compile; then
3054     test -n "$arch" && test -n "$target_os" ||
3055         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3056 fi
3057
3058 ar_default="${cross_prefix}${ar_default}"
3059 cc_default="${cross_prefix}${cc_default}"
3060 objcc_default="${cross_prefix}${objcc_default}"
3061 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3062 nm_default="${cross_prefix}${nm_default}"
3063 pkg_config_default="${cross_prefix}${pkg_config_default}"
3064 ranlib="${cross_prefix}${ranlib}"
3065 strip="${cross_prefix}${strip}"
3066
3067 sysinclude_default="${sysroot}/usr/include"
3068
3069 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3070 enabled cross_compile || host_cc_default=$cc
3071 set_default host_cc
3072
3073 if ! $pkg_config --version >/dev/null 2>&1; then
3074     warn "$pkg_config not found, library detection may fail."
3075     pkg_config=false
3076 fi
3077
3078 exesuf() {
3079     case $1 in
3080         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3081     esac
3082 }
3083
3084 EXESUF=$(exesuf $target_os)
3085 HOSTEXESUF=$(exesuf $host_os)
3086
3087 # set temporary file name
3088 : ${TMPDIR:=$TEMPDIR}
3089 : ${TMPDIR:=$TMP}
3090 : ${TMPDIR:=/tmp}
3091
3092 if ! check_cmd mktemp -u XXXXXX; then
3093     # simple replacement for missing mktemp
3094     # NOT SAFE FOR GENERAL USE
3095     mktemp(){
3096         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3097         echo "$tmpname"
3098         mkdir "$tmpname"
3099     }
3100 fi
3101
3102 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3103     die "Unable to create temporary directory in $TMPDIR."
3104
3105 tmpfile(){
3106     tmp="${AVTMPDIR}/test"$2
3107     (set -C; exec > $tmp) 2> /dev/null ||
3108         die "Unable to create temporary file in $AVTMPDIR."
3109     eval $1=$tmp
3110 }
3111
3112 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3113 trap 'exit 2' INT
3114
3115 tmpfile TMPASM .asm
3116 tmpfile TMPC   .c
3117 tmpfile TMPE   $EXESUF
3118 tmpfile TMPH   .h
3119 tmpfile TMPO   .o
3120 tmpfile TMPS   .S
3121 tmpfile TMPSH  .sh
3122 tmpfile TMPV   .ver
3123
3124 unset -f mktemp
3125
3126 chmod +x $TMPE
3127
3128 # make sure we can execute files in $TMPDIR
3129 cat > $TMPSH 2>> $logfile <<EOF
3130 #! /bin/sh
3131 EOF
3132 chmod +x $TMPSH >> $logfile 2>&1
3133 if ! $TMPSH >> $logfile 2>&1; then
3134     cat <<EOF
3135 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3136 variable to another directory and make sure that it is not mounted noexec.
3137 EOF
3138     die "Sanity test failed."
3139 fi
3140
3141 armasm_flags(){
3142     for flag; do
3143         case $flag in
3144             # Filter out MSVC cl.exe options from cflags that shouldn't
3145             # be passed to gas-preprocessor
3146             -M[TD]*)                                            ;;
3147             *)                  echo $flag                      ;;
3148         esac
3149    done
3150 }
3151
3152 cparser_flags(){
3153     for flag; do
3154         case $flag in
3155             -Wno-switch)             echo -Wno-switch-enum ;;
3156             -Wno-format-zero-length) ;;
3157             -Wdisabled-optimization) ;;
3158             -Wno-pointer-sign)       echo -Wno-other ;;
3159             *)                       echo $flag ;;
3160         esac
3161     done
3162 }
3163
3164 msvc_common_flags(){
3165     for flag; do
3166         case $flag in
3167             # In addition to specifying certain flags under the compiler
3168             # specific filters, they must be specified here as well or else the
3169             # generic catch all at the bottom will print the original flag.
3170             -Wall)                ;;
3171             -Wextra)              ;;
3172             -std=c99)             ;;
3173             # Common flags
3174             -fomit-frame-pointer) ;;
3175             -g)                   echo -Z7 ;;
3176             -fno-math-errno)      ;;
3177             -fno-common)          ;;
3178             -fno-signed-zeros)    ;;
3179             -fPIC)                ;;
3180             -mthumb)              ;;
3181             -march=*)             ;;
3182             -lz)                  echo zlib.lib ;;
3183             -lx264)               echo libx264.lib ;;
3184             -l*)                  echo ${flag#-l}.lib ;;
3185             -L*)                  echo -libpath:${flag#-L} ;;
3186             *)                    echo $flag ;;
3187         esac
3188     done
3189 }
3190
3191 msvc_flags(){
3192     msvc_common_flags "$@"
3193     for flag; do
3194         case $flag in
3195             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3196                                        -wd4554 ;;
3197             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3198                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3199                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3200                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3201         esac
3202     done
3203 }
3204
3205 icl_flags(){
3206     msvc_common_flags "$@"
3207     for flag; do
3208         case $flag in
3209             # Despite what Intel's documentation says -Wall, which is supported
3210             # on Windows, does enable remarks so disable them here.
3211             -Wall)                echo $flag -Qdiag-disable:remark ;;
3212             -std=c99)             echo -Qstd=c99 ;;
3213         esac
3214     done
3215 }
3216
3217 pgi_flags(){
3218     for flag; do
3219         case $flag in
3220             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3221             -fomit-frame-pointer) echo -Mnoframe ;;
3222             -g)                   echo -gopt ;;
3223             *)                    echo $flag ;;
3224         esac
3225     done
3226 }
3227
3228 suncc_flags(){
3229     for flag; do
3230         case $flag in
3231             -march=*|-mcpu=*)
3232                 case "${flag#*=}" in
3233                     native)                   echo -xtarget=native       ;;
3234                     v9|niagara)               echo -xarch=sparc          ;;
3235                     ultrasparc)               echo -xarch=sparcvis       ;;
3236                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3237                     i586|pentium)             echo -xchip=pentium        ;;
3238                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3239                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3240                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3241                     pentium4*)          echo -xtarget=pentium4           ;;
3242                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3243                     *-sse3)             echo -xarch=sse3                 ;;
3244                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3245                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3246                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3247                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3248                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3249                     k8|opteron|athlon64|athlon-fx)
3250                                                echo -xarch=sse2a         ;;
3251                     athlon*)                   echo -xarch=pentium_proa  ;;
3252                 esac
3253                 ;;
3254             -std=c99)             echo -xc99              ;;
3255             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3256             -fPIC)                echo -KPIC -xcode=pic32 ;;
3257             -W*,*)                echo $flag              ;;
3258             -f*-*|-W*|-mimpure-text)                      ;;
3259             -shared)              echo -G                 ;;
3260             *)                    echo $flag              ;;
3261         esac
3262     done
3263 }
3264
3265 tms470_flags(){
3266     for flag; do
3267         case $flag in
3268             -march=*|-mcpu=*)
3269                 case "${flag#*=}" in
3270                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3271                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3272                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3273                     armv6*|arm11*)          echo -mv=6   ;;
3274                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3275                                             echo -mv=5e  ;;
3276                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3277                 esac
3278                 ;;
3279             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3280             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3281             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3282             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3283             -msoft-float)   echo --float_support=vfplib       ;;
3284             -O[0-3]|-mf=*)  echo $flag                        ;;
3285             -g)             echo -g -mn                       ;;
3286             -pds=*)         echo $flag                        ;;
3287             -D*|-I*)        echo $flag                        ;;
3288             --gcc|--abi=*)  echo $flag                        ;;
3289             -me)            echo $flag                        ;;
3290         esac
3291     done
3292 }
3293
3294 probe_cc(){
3295     pfx=$1
3296     _cc=$2
3297
3298     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3299     unset _ld_o _ldflags _ld_lib _ld_path
3300     unset _depflags _DEPCMD _DEPFLAGS
3301     _flags_filter=echo
3302
3303     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3304         _type=llvm_gcc
3305         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3306         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3307         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3308         _cflags_speed='-O3'
3309         _cflags_size='-Os'
3310     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3311         _type=gcc
3312         gcc_version=$($_cc --version | head -n1)
3313         gcc_basever=$($_cc -dumpversion)
3314         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3315         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3316         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3317         if ! $_cc -dumpversion | grep -q '^2\.'; then
3318             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3319         fi
3320         _cflags_speed='-O3'
3321         _cflags_size='-Os'
3322     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3323         _type=icc
3324         _ident=$($_cc --version | head -n1)
3325         _depflags='-MMD'
3326         _cflags_speed='-O3'
3327         _cflags_size='-Os'
3328         _cflags_noopt='-O1'
3329     elif $_cc -v 2>&1 | grep -q xlc; then
3330         _type=xlc
3331         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3332         _cflags_speed='-O5'
3333         _cflags_size='-O5 -qcompact'
3334     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3335         test -d "$sysroot" || die "No valid sysroot specified."
3336         _type=armcc
3337         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3338         armcc_conf="$PWD/armcc.conf"
3339         $_cc --arm_linux_configure                 \
3340              --arm_linux_config_file="$armcc_conf" \
3341              --configure_sysroot="$sysroot"        \
3342              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3343              die "Error creating armcc configuration file."
3344         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3345         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3346         as_default="${cross_prefix}gcc"
3347         _depflags='-MMD'
3348         _cflags_speed='-O3'
3349         _cflags_size='-Os'
3350     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3351         _type=tms470
3352         _ident=$($_cc -version | head -n1 | tr -s ' ')
3353         _flags='--gcc --abi=eabi -me'
3354         _cc_e='-ppl -fe=$@'
3355         _cc_o='-fe=$@'
3356         _depflags='-ppa -ppd=$(@:.o=.d)'
3357         _cflags_speed='-O3 -mf=5'
3358         _cflags_size='-O3 -mf=2'
3359         _flags_filter=tms470_flags
3360     elif $_cc -v 2>&1 | grep -q clang; then
3361         _type=clang
3362         _ident=$($_cc --version 2>/dev/null | head -n1)
3363         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3364         _cflags_speed='-O3'
3365         _cflags_size='-Os'
3366     elif $_cc -V 2>&1 | grep -q Sun; then
3367         _type=suncc
3368         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3369         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3370         _DEPFLAGS='-xM1 -xc99'
3371         _ldflags='-std=c99'
3372         _cflags_speed='-O5'
3373         _cflags_size='-O5 -xspace'
3374         _flags_filter=suncc_flags
3375     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3376         _type=pathscale
3377         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3378         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3379         _cflags_speed='-O2'
3380         _cflags_size='-Os'
3381         _flags_filter='filter_out -Wdisabled-optimization'
3382     elif $_cc -v 2>&1 | grep -q Open64; then
3383         _type=open64
3384         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3385         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3386         _cflags_speed='-O2'
3387         _cflags_size='-Os'
3388         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3389     elif $_cc -V 2>&1 | grep -q Portland; then
3390         _type=pgi
3391         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3392         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3393         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3394         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3395         _cflags_noopt="-O1"
3396         _flags_filter=pgi_flags
3397     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3398         _type=armasm
3399         _ident=$($_cc | head -n1)
3400         # 4509: "This form of conditional instruction is deprecated"
3401         _flags="-nologo -ignore 4509"
3402         _flags_filter=armasm_flags
3403     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3404         _type=msvc
3405         _ident=$($_cc 2>&1 | head -n1)
3406         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3407         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3408         _cflags_speed="-O2"
3409         _cflags_size="-O1"
3410         _cflags_noopt="-O1"
3411         if $_cc -nologo- 2>&1 | grep -q Linker; then
3412             _ld_o='-out:$@'
3413         else
3414             _ld_o='-Fe$@'
3415         fi
3416         _cc_o='-Fo$@'
3417         _cc_e='-P -Fi$@'
3418         _flags_filter=msvc_flags
3419         _ld_lib='lib%.a'
3420         _ld_path='-libpath:'
3421         _flags='-nologo'
3422     elif $_cc 2>&1 | grep -q Intel; then
3423         _type=icl
3424         _ident=$($_cc 2>&1 | head -n1)
3425         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3426         # Not only is O3 broken on 13.x+ but it is slower on all previous
3427         # versions (tested) as well.
3428         _cflags_speed="-O2"
3429         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3430         if $_cc 2>&1 | grep -q Linker; then
3431             _ld_o='-out:$@'
3432         else
3433             _ld_o='-Fe$@'
3434         fi
3435         _cc_o='-Fo$@'
3436         _cc_e='-P'
3437         _flags_filter=icl_flags
3438         _ld_lib='lib%.a'
3439         _ld_path='-libpath:'
3440         # -Qdiag-error to make icl error when seeing certain unknown arguments
3441         _flags='-nologo -Qdiag-error:4044,10157'
3442         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3443         # with MSVC which enables it by default.
3444         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3445     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3446         # lld can emulate multiple different linkers; in ms link.exe mode,
3447         # the -? parameter gives the help output which contains an identifyable
3448         # string, while it gives an error in other modes.
3449         _type=lld-link
3450         # The link.exe mode doesn't have a switch for getting the version,
3451         # but we can force it back to gnu mode and get the version from there.
3452         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3453         _ld_o='-out:$@'
3454         _flags_filter=msvc_flags
3455         _ld_lib='lib%.a'
3456         _ld_path='-libpath:'
3457     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3458         _type=cparser
3459         _ident=$($_cc --version | head -n1)
3460         _depflags='-MMD'
3461         _cflags_speed='-O4'
3462         _cflags_size='-O2'
3463         _flags_filter=cparser_flags
3464     fi
3465
3466     eval ${pfx}_type=\$_type
3467     eval ${pfx}_ident=\$_ident
3468 }
3469
3470 set_ccvars(){
3471     eval ${1}_C=\${_cc_c-\${${1}_C}}
3472     eval ${1}_E=\${_cc_e-\${${1}_E}}
3473     eval ${1}_O=\${_cc_o-\${${1}_O}}
3474
3475     if [ -n "$_depflags" ]; then
3476         eval ${1}_DEPFLAGS=\$_depflags
3477     else
3478         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3479         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3480         eval DEP${1}FLAGS=\$_flags
3481     fi
3482 }
3483
3484 probe_cc cc "$cc"
3485 cflags_filter=$_flags_filter
3486 cflags_speed=$_cflags_speed
3487 cflags_size=$_cflags_size
3488 cflags_noopt=$_cflags_noopt
3489 add_cflags $_flags $_cflags
3490 cc_ldflags=$_ldflags
3491 set_ccvars CC
3492
3493 probe_cc hostcc "$host_cc"
3494 host_cflags_filter=$_flags_filter
3495 host_cflags_speed=$_cflags_speed
3496 add_host_cflags  $_flags $_cflags
3497 set_ccvars HOSTCC
3498
3499 test -n "$cc_type" && enable $cc_type ||
3500     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3501
3502 : ${as_default:=$cc}
3503 : ${objcc_default:=$cc}
3504 : ${dep_cc_default:=$cc}
3505 : ${ld_default:=$cc}
3506 : ${host_ld_default:=$host_cc}
3507 set_default ar as objcc dep_cc ld host_ld
3508
3509 probe_cc as "$as"
3510 asflags_filter=$_flags_filter
3511 add_asflags $_flags $_cflags
3512 set_ccvars AS
3513
3514 probe_cc objcc "$objcc"
3515 objcflags_filter=$_flags_filter
3516 add_objcflags $_flags $_cflags
3517 set_ccvars OBJC
3518
3519 probe_cc ld "$ld"
3520 ldflags_filter=$_flags_filter
3521 add_ldflags $_flags $_ldflags
3522 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3523 LD_O=${_ld_o-$LD_O}
3524 LD_LIB=${_ld_lib-$LD_LIB}
3525 LD_PATH=${_ld_path-$LD_PATH}
3526
3527 probe_cc hostld "$host_ld"
3528 host_ldflags_filter=$_flags_filter
3529 add_host_ldflags $_flags $_ldflags
3530 HOSTLD_O=${_ld_o-$HOSTLD_O}
3531
3532 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3533     probe_cc depcc "$dep_cc"
3534     CCDEP=${_DEPCMD:-$DEPCMD}
3535     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3536     DEPCCFLAGS=$_flags
3537 fi
3538
3539 if $ar 2>&1 | grep -q Microsoft; then
3540     arflags="-nologo"
3541     ar_o='-out:$@'
3542 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3543     arflags="rq"
3544     ar_o='$@'
3545 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3546     arflags='-Xany -r -c'
3547     ar_o='$@'
3548 else
3549     arflags="rc"
3550     ar_o='$@'
3551 fi
3552
3553 add_cflags $extra_cflags
3554 add_objcflags $extra_objcflags
3555 add_asflags $extra_cflags
3556
3557 if test -n "$sysroot"; then
3558     case "$cc_type" in
3559         gcc|llvm_gcc|clang)
3560             add_cppflags --sysroot="$sysroot"
3561             add_ldflags --sysroot="$sysroot"
3562         ;;
3563         tms470)
3564             add_cppflags -I"$sysinclude"
3565             add_ldflags  --sysroot="$sysroot"
3566         ;;
3567     esac
3568 fi
3569
3570 if test "$cpu" = host; then
3571     enabled cross_compile &&
3572         die "--cpu=host makes no sense when cross-compiling."
3573
3574     case "$cc_type" in
3575         gcc|llvm_gcc)
3576             check_native(){
3577                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3578                 sed -n "/cc1.*$1=/{
3579                             s/.*$1=\\([^ ]*\\).*/\\1/
3580                             p
3581                             q
3582                         }" $TMPE
3583             }
3584             cpu=$(check_native -march || check_native -mcpu)
3585         ;;
3586     esac
3587
3588     test "${cpu:-host}" = host &&
3589         die "--cpu=host not supported with compiler $cc"
3590 fi
3591
3592 # Deal with common $arch aliases
3593 case "$arch" in
3594     aarch64|arm64)
3595         arch="aarch64"
3596     ;;
3597     arm*)
3598         arch="arm"
3599     ;;
3600     mips*|IP*)
3601         case "$arch" in
3602         *el)
3603             add_cppflags -EL
3604             add_ldflags -EL
3605         ;;
3606         *eb)
3607             add_cppflags -EB
3608             add_ldflags -EB
3609         ;;
3610         esac
3611         arch="mips"
3612     ;;
3613     parisc*|hppa*)
3614         arch="parisc"
3615     ;;
3616     "Power Macintosh"|ppc*|powerpc*)
3617         arch="ppc"
3618     ;;
3619     s390|s390x)
3620         arch="s390"
3621     ;;
3622     sh4|sh)
3623         arch="sh4"
3624     ;;
3625     sun4u|sparc*)
3626         arch="sparc"
3627     ;;
3628     tilegx|tile-gx)
3629         arch="tilegx"
3630     ;;
3631     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3632         arch="x86"
3633     ;;
3634 esac
3635
3636 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3637 enable $arch
3638
3639 # Add processor-specific flags
3640 if enabled aarch64; then
3641
3642     case $cpu in
3643         armv*)
3644             cpuflags="-march=$cpu"
3645         ;;
3646         *)
3647             cpuflags="-mcpu=$cpu"
3648         ;;
3649     esac
3650
3651 elif enabled alpha; then
3652
3653     cpuflags="-mcpu=$cpu"
3654
3655 elif enabled arm; then
3656
3657     check_arm_arch() {
3658         check_cpp_condition stddef.h \
3659             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3660             $cpuflags
3661     }
3662
3663     probe_arm_arch() {
3664         if   check_arm_arch 4;        then echo armv4
3665         elif check_arm_arch 4T;       then echo armv4t
3666         elif check_arm_arch 5;        then echo armv5
3667         elif check_arm_arch 5E;       then echo armv5e
3668         elif check_arm_arch 5T;       then echo armv5t
3669         elif check_arm_arch 5TE;      then echo armv5te
3670         elif check_arm_arch 5TEJ;     then echo armv5te
3671         elif check_arm_arch 6;        then echo armv6
3672         elif check_arm_arch 6J;       then echo armv6j
3673         elif check_arm_arch 6K;       then echo armv6k
3674         elif check_arm_arch 6Z;       then echo armv6z
3675         elif check_arm_arch 6ZK;      then echo armv6zk
3676         elif check_arm_arch 6T2;      then echo armv6t2
3677         elif check_arm_arch 7;        then echo armv7
3678         elif check_arm_arch 7A  7_A;  then echo armv7-a
3679         elif check_arm_arch 7S;       then echo armv7-a
3680         elif check_arm_arch 7R  7_R;  then echo armv7-r
3681         elif check_arm_arch 7M  7_M;  then echo armv7-m
3682         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3683         elif check_arm_arch 8A  8_A;  then echo armv8-a
3684         fi
3685     }
3686
3687     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3688
3689     case $cpu in
3690         armv*)
3691             cpuflags="-march=$cpu"
3692             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3693         ;;
3694         *)
3695             cpuflags="-mcpu=$cpu"
3696             case $cpu in
3697                 cortex-a*)                               subarch=armv7a  ;;
3698                 cortex-r*)                               subarch=armv7r  ;;
3699                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3700                 arm11*)                                  subarch=armv6   ;;
3701                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3702                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3703                 *)                             subarch=$(probe_arm_arch) ;;
3704             esac
3705         ;;
3706     esac
3707
3708     case "$subarch" in
3709         armv5t*)    enable fast_clz                ;;
3710         armv[6-8]*) enable fast_clz fast_unaligned ;;
3711     esac
3712
3713 elif enabled avr32; then
3714
3715     case $cpu in
3716         ap7[02]0[0-2])
3717             subarch="avr32_ap"
3718             cpuflags="-mpart=$cpu"
3719         ;;
3720         ap)
3721             subarch="avr32_ap"
3722             cpuflags="-march=$cpu"
3723         ;;
3724         uc3[ab]*)
3725             subarch="avr32_uc"
3726             cpuflags="-mcpu=$cpu"
3727         ;;
3728         uc)
3729             subarch="avr32_uc"
3730             cpuflags="-march=$cpu"
3731         ;;
3732     esac
3733
3734 elif enabled bfin; then
3735
3736     cpuflags="-mcpu=$cpu"
3737
3738 elif enabled mips; then
3739
3740     cpuflags="-march=$cpu"
3741
3742 elif enabled ppc; then
3743
3744     disable ldbrx
3745
3746     case $(tolower $cpu) in
3747         601|ppc601|powerpc601)
3748             cpuflags="-mcpu=601"
3749             disable altivec
3750         ;;
3751         603*|ppc603*|powerpc603*)
3752             cpuflags="-mcpu=603"
3753             disable altivec
3754         ;;
3755         604*|ppc604*|powerpc604*)
3756             cpuflags="-mcpu=604"
3757             disable altivec
3758         ;;
3759         g3|75*|ppc75*|powerpc75*)
3760             cpuflags="-mcpu=750"
3761             disable altivec
3762         ;;
3763         g4|745*|ppc745*|powerpc745*)
3764             cpuflags="-mcpu=7450"
3765             disable vsx
3766         ;;
3767         74*|ppc74*|powerpc74*)
3768             cpuflags="-mcpu=7400"
3769             disable vsx
3770         ;;
3771         g5|970|ppc970|powerpc970)
3772             cpuflags="-mcpu=970"
3773             disable vsx
3774         ;;
3775         power[3-6]*)
3776             cpuflags="-mcpu=$cpu"
3777             disable vsx
3778         ;;
3779         power[7-8]*)
3780             cpuflags="-mcpu=$cpu"
3781             enable ldbrx
3782         ;;
3783         cell)
3784             cpuflags="-mcpu=cell"
3785             enable ldbrx
3786             disable vsx
3787         ;;
3788         e500mc)
3789             cpuflags="-mcpu=e500mc"
3790             disable altivec
3791         ;;
3792         e500v2)
3793             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3794             disable altivec
3795             disable dcbzl
3796         ;;
3797         e500)
3798             cpuflags="-mcpu=8540 -mhard-float"
3799             disable altivec
3800             disable dcbzl
3801         ;;
3802     esac
3803
3804 elif enabled sparc; then
3805
3806     case $cpu in
3807         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3808             cpuflags="-mcpu=$cpu"
3809         ;;
3810         ultrasparc*|niagara[234])
3811             cpuflags="-mcpu=$cpu"
3812         ;;
3813     esac
3814
3815 elif enabled x86; then
3816
3817     case $cpu in
3818         i[345]86|pentium)
3819             cpuflags="-march=$cpu"
3820             disable i686
3821             disable mmx
3822         ;;
3823         # targets that do NOT support nopl and conditional mov (cmov)
3824         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3825             cpuflags="-march=$cpu"
3826             disable i686
3827         ;;
3828         # targets that do support nopl and conditional mov (cmov)
3829         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3830             cpuflags="-march=$cpu"
3831             enable i686
3832             enable fast_cmov
3833         ;;
3834         # targets that do support conditional mov but on which it's slow
3835         pentium4|pentium4m|prescott|nocona)
3836             cpuflags="-march=$cpu"
3837             enable i686
3838             disable fast_cmov
3839         ;;
3840     esac
3841
3842 fi
3843
3844 if [ "$cpu" != generic ]; then
3845     add_cflags  $cpuflags
3846     add_asflags $cpuflags
3847     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3848 fi
3849
3850 # compiler sanity check
3851 check_exec <<EOF
3852 int main(void){ return 0; }
3853 EOF
3854 if test "$?" != 0; then
3855     echo "$cc is unable to create an executable file."
3856     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3857         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3858         echo "Only do this if you know what cross compiling means."
3859     fi
3860     die "C compiler test failed."
3861 fi
3862
3863 add_cppflags -D_ISOC99_SOURCE
3864
3865 # some compilers silently accept -std=c11, so we also need to check that the
3866 # version macro is defined properly
3867 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3868     add_cflags -std=c11 ||
3869     check_cflags -std=c99
3870
3871 check_cppflags -D_FILE_OFFSET_BITS=64
3872 check_cppflags -D_LARGEFILE_SOURCE
3873
3874 add_host_cppflags -D_ISOC99_SOURCE
3875 check_host_cflags -std=c99
3876 check_host_cflags -Wall
3877 check_host_cflags $host_cflags_speed
3878
3879 check_64bit(){
3880     arch32=$1
3881     arch64=$2
3882     expr=$3
3883     check_code cc "" "int test[2*($expr) - 1]" &&
3884         subarch=$arch64 || subarch=$arch32
3885 }
3886
3887 case "$arch" in
3888     aarch64|alpha|ia64)
3889         spic=$shared
3890     ;;
3891     mips)
3892         check_64bit mips mips64 '_MIPS_SIM > 1'
3893         spic=$shared
3894     ;;
3895     parisc)
3896         check_64bit parisc parisc64 'sizeof(void *) > 4'
3897         spic=$shared
3898     ;;
3899     ppc)
3900         check_64bit ppc ppc64 'sizeof(void *) > 4'
3901         spic=$shared
3902     ;;
3903     s390)
3904         check_64bit s390 s390x 'sizeof(void *) > 4'
3905         spic=$shared
3906     ;;
3907     sparc)
3908         check_64bit sparc sparc64 'sizeof(void *) > 4'
3909         spic=$shared
3910     ;;
3911     x86)
3912         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3913         if test "$subarch" = "x86_64"; then
3914             spic=$shared
3915         fi
3916     ;;
3917 esac
3918
3919 enable $subarch
3920 enabled spic && enable_weak pic
3921
3922 enabled x86_64 && objformat=elf64 || objformat="elf32"
3923
3924 # OS specific
3925 case $target_os in
3926     aix)
3927         SHFLAGS=-shared
3928         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3929         enabled shared && add_ldflags -Wl,-brtl
3930         ;;
3931     android)
3932         disable symver
3933         enable section_data_rel_ro
3934         SLIB_INSTALL_NAME='$(SLIBNAME)'
3935         SLIB_INSTALL_LINKS=
3936         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3937         ;;
3938     haiku)
3939         prefix_default="/boot/common"
3940         network_extralibs="-lnetwork"
3941         host_extralibs=
3942         ;;
3943     sunos)
3944         SHFLAGS='-shared -Wl,-h,$$(@F)'
3945         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3946         network_extralibs="-lsocket -lnsl"
3947         # When using suncc to build, the Solaris linker will mark
3948         # an executable with each instruction set encountered by
3949         # the Solaris assembler.  As our libraries contain their own
3950         # guards for processor-specific code, instead suppress
3951         # generation of the HWCAPS ELF section on Solaris x86 only.
3952         enabled_all suncc x86 &&
3953             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3954             add_ldflags -Wl,-M,mapfile
3955         nm_default='nm -P -g'
3956         version_script='-M'
3957         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3958         ;;
3959     netbsd)
3960         disable symver
3961         oss_indev_extralibs="-lossaudio"
3962         oss_outdev_extralibs="-lossaudio"
3963         ;;
3964     openbsd|bitrig)
3965         disable symver
3966         SHFLAGS='-shared'
3967         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3968         SLIB_INSTALL_LINKS=
3969         oss_indev_extralibs="-lossaudio"
3970         oss_outdev_extralibs="-lossaudio"
3971         ;;
3972     dragonfly)
3973         disable symver
3974         ;;
3975     freebsd)
3976         ;;
3977     bsd/os)
3978         add_extralibs -lpoll -lgnugetopt
3979         ;;
3980     darwin)
3981         enabled ppc && add_asflags -force_cpusubtype_ALL
3982         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3983         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3984         add_ldflags -Wl,-dynamic,-search_paths_first
3985         check_cflags -Werror=partial-availability
3986         SLIBSUF=".dylib"
3987         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3988         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3989         enabled x86_64 && objformat="macho64" || objformat="macho32"
3990         enabled_any pic shared ||
3991             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3992         check_header dispatch/dispatch.h &&
3993             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3994         if test -n "$sysroot"; then
3995             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3996             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3997         fi
3998         ;;
3999     msys*)
4000         die "Native MSYS builds are discouraged, please use the MINGW environment."
4001         ;;
4002     mingw32*|mingw64*)
4003         target_os=mingw32
4004         LIBTARGET=i386
4005         if enabled x86_64; then
4006             LIBTARGET="i386:x86-64"
4007         fi
4008         if enabled shared; then
4009             # Cannot build both shared and static libs when using dllexport.
4010             disable static
4011         fi
4012         check_ldflags -Wl,--nxcompat
4013         check_ldflags -Wl,--dynamicbase
4014         shlibdir_default="$bindir_default"
4015         SLIBPREF=""
4016         SLIBSUF=".dll"
4017         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4018         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4019         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4020         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4021         SLIB_INSTALL_LINKS=
4022         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4023         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4024         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4025         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4026         enabled x86_64 && objformat="win64" || objformat="win32"
4027         dlltool="${cross_prefix}dlltool"
4028         ranlib=:
4029         enable dos_paths
4030         ;;
4031     win32|win64)
4032         disable symver
4033         if enabled shared; then
4034             # Link to the import library instead of the normal static library
4035             # for shared libs.
4036             LD_LIB='%.lib'
4037             # Cannot build both shared and static libs with MSVC or icl.
4038             disable static
4039         fi
4040         shlibdir_default="$bindir_default"
4041         SLIBPREF=""
4042         SLIBSUF=".dll"
4043         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4044         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4045         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4046         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4047         SLIB_INSTALL_LINKS=
4048         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4049         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4050         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4051         enabled x86_64 && objformat="win64" || objformat="win32"
4052         ranlib=:
4053         enable dos_paths
4054         ;;
4055     cygwin*)
4056         target_os=cygwin
4057         shlibdir_default="$bindir_default"
4058         SLIBPREF="cyg"
4059         SLIBSUF=".dll"
4060         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4061         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4062         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4063         SLIB_INSTALL_LINKS=
4064         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4065         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4066         enabled x86_64 && objformat="win64" || objformat="win32"
4067         enable dos_paths
4068         ;;
4069     *-dos|freedos|opendos)
4070         network_extralibs="-lsocket"
4071         objformat="coff"
4072         enable dos_paths
4073         add_cppflags -U__STRICT_ANSI__
4074         ;;
4075     linux)
4076         enable dv1394
4077         enable section_data_rel_ro
4078         ;;
4079     irix*)
4080         target_os=irix
4081         ranlib="echo ignoring ranlib"
4082         ;;
4083     os/2*)
4084         ln_s="cp -f"
4085         objformat="aout"
4086         add_cppflags -D_GNU_SOURCE
4087         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4088         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4089         LIBSUF="_s.a"
4090         SLIBPREF=""
4091         SLIBSUF=".dll"
4092         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4093         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4094         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4095             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4096             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4097             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4098             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4099         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4100             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4101         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4102         enable dos_paths
4103         ;;
4104     gnu/kfreebsd)
4105         add_cppflags -D_BSD_SOURCE
4106         ;;
4107     gnu)
4108         ;;
4109     qnx)
4110         add_cppflags -D_QNX_SOURCE
4111         network_extralibs="-lsocket"
4112         ;;
4113     symbian)
4114         SLIBSUF=".dll"
4115         enable dos_paths
4116         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4117         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4118         add_ldflags -Wl,--target1-abs,--no-undefined \
4119                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4120                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4121         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4122                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4123                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4124         ;;
4125     minix)
4126         ;;
4127     none)
4128         ;;
4129     *)
4130         die "Unknown OS '$target_os'."
4131         ;;
4132 esac
4133
4134 # determine libc flavour
4135
4136 probe_libc(){
4137     pfx=$1
4138     pfx_no_=${pfx%_}
4139     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4140     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4141         eval ${pfx}libc_type=uclibc
4142         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4143     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4144         eval ${pfx}libc_type=glibc
4145         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4146     # MinGW headers can be installed on Cygwin, so check for newlib first.
4147     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4148         eval ${pfx}libc_type=newlib
4149         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4150     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4151     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4152         eval ${pfx}libc_type=mingw64
4153         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4154         eval test \$${pfx_no_}cc_type = "gcc" &&
4155             add_${pfx}cppflags -D__printf__=__gnu_printf__
4156     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4157          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4158         eval ${pfx}libc_type=mingw32
4159         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4160             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4161             die "ERROR: MinGW32 runtime version must be >= 3.15."
4162         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4163         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4164             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4165         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4166             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4167         eval test \$${pfx_no_}cc_type = "gcc" &&
4168             add_${pfx}cppflags -D__printf__=__gnu_printf__
4169     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4170         eval ${pfx}libc_type=msvcrt
4171         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4172             if [ "$pfx" = host_ ]; then
4173                 add_host_cppflags -Dsnprintf=_snprintf
4174             else
4175                 add_compat strtod.o strtod=avpriv_strtod
4176                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4177                                              _snprintf=avpriv_snprintf  \
4178                                              vsnprintf=avpriv_vsnprintf
4179             fi
4180         fi
4181         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4182         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4183         # 0x601 by default unless something else is set by the user.
4184         # This can easily lead to us detecting functions only present
4185         # in such new versions and producing binaries requiring windows 7.0.
4186         # Therefore explicitly set the default to XP unless the user has
4187         # set something else on the command line.
4188         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4189         # family. For these cases, configure is free to use any functions
4190         # found in the SDK headers by default. (Alternatively, we could force
4191         # _WIN32_WINNT to 0x0602 in that case.)
4192         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4193             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4194 #ifdef WINAPI_FAMILY
4195 #include <winapifamily.h>
4196 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4197 #error not desktop
4198 #endif
4199 #endif
4200 EOF
4201         if [ "$pfx" = "" ]; then
4202             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4203         fi
4204     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4205         eval ${pfx}libc_type=klibc
4206     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4207         eval ${pfx}libc_type=bionic
4208     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4209         eval ${pfx}libc_type=solaris
4210         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4211     else
4212         eval ${pfx}libc_type=default
4213         add_${pfx}cppflags -D_DEFAULT_SOURCE
4214     fi
4215 }
4216
4217 probe_libc
4218 test -n "$libc_type" && enable libc_$libc_type
4219 probe_libc host_
4220 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4221
4222 # hacks for compiler/libc/os combinations
4223
4224 case $libc_type in
4225     bionic)
4226         add_compat strtod.o strtod=avpriv_strtod
4227         ;;
4228     glibc)
4229         if enabled tms470; then
4230             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4231             add_cppflags -D__USER_LABEL_PREFIX__=
4232             add_cppflags -D__builtin_memset=memset
4233             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4234             add_cflags   -pds=48    # incompatible redefinition of macro
4235         fi
4236         ;;
4237 esac
4238
4239 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4240     add_cppflags '-I\$(SRC_PATH)/compat/float'
4241
4242 esc(){
4243     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4244 }
4245
4246 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4247
4248 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4249
4250 set_default $PATHS_LIST
4251 set_default nm
4252
4253 # we need to build at least one lib type
4254 if ! enabled_any static shared; then
4255     cat <<EOF
4256 At least one library type must be built.
4257 Specify --enable-static to build the static libraries or --enable-shared to
4258 build the shared libraries as well. To only build the shared libraries specify
4259 --disable-static in addition to --enable-shared.
4260 EOF
4261     exit 1
4262 fi
4263
4264 disabled optimizations || check_cflags -fomit-frame-pointer
4265
4266 enable_weak_pic() {
4267     disabled pic && return
4268     enable pic
4269     add_cppflags -DPIC
4270     case "$target_os" in
4271     mingw*|cygwin*)
4272         ;;
4273     *)
4274         add_cflags -fPIC
4275         ;;
4276     esac
4277     add_asflags  -fPIC
4278 }
4279
4280 enabled pic && enable_weak_pic
4281
4282 check_cc <<EOF || die "Symbol mangling check failed."
4283 int ff_extern;
4284 EOF
4285 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4286 extern_prefix=${sym%%ff_extern*}
4287
4288 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4289
4290 _restrict=
4291 for restrict_keyword in restrict __restrict__ __restrict; do
4292     check_cc <<EOF && _restrict=$restrict_keyword && break
4293 void foo(char * $restrict_keyword p);
4294 EOF
4295 done
4296
4297 check_cc <<EOF && enable pragma_deprecated
4298 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4299 EOF
4300
4301 check_cc <<EOF && enable attribute_packed
4302 struct { int x; } __attribute__((packed)) x;
4303 EOF
4304
4305 check_cc <<EOF && enable attribute_may_alias
4306 union { int x; } __attribute__((may_alias)) x;
4307 EOF
4308
4309 check_cc <<EOF || die "endian test failed"
4310 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4311 EOF
4312 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4313
4314 check_gas() {
4315     log "check_gas using '$as' as AS"
4316     # :vararg is used on aarch64, arm and ppc altivec
4317     check_as <<EOF || return 1
4318 .macro m n, y:vararg=0
4319 \n: .int \y
4320 .endm
4321 m x
4322 EOF
4323     # .altmacro is only used in arm asm
4324     ! enabled arm || check_as <<EOF || return 1
4325 .altmacro
4326 EOF
4327     enable gnu_as
4328     return 0
4329 }
4330
4331 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4332     nogas=:
4333     enabled_any arm aarch64 && nogas=die
4334     enabled_all ppc altivec && nogas=warn
4335     as_noop=-v
4336
4337     case $as_type in
4338         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4339         gcc)  gaspp_as_type=gas ;;
4340         *)    gaspp_as_type=$as_type ;;
4341     esac
4342
4343     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4344
4345     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4346         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4347
4348     if ! check_gas ; then
4349         as=${gas:=$as}
4350         check_gas || \
4351             $nogas "GNU assembler not found, install/update gas-preprocessor"
4352     fi
4353
4354     check_as <<EOF && enable as_func
4355 .func test
4356 .endfunc
4357 EOF
4358 fi
4359
4360 check_inline_asm inline_asm_labels '"1:\n"'
4361
4362 if enabled aarch64; then
4363     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4364     # internal assembler in clang 3.3 does not support this instruction
4365     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4366     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4367
4368     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4369
4370 elif enabled alpha; then
4371
4372     check_cflags -mieee
4373
4374 elif enabled arm; then
4375
4376     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4377     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4378     enabled thumb && check_cflags -mthumb || check_cflags -marm
4379
4380     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4381         enable vfp_args
4382     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4383         enable vfp_args
4384     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4385         case "${cross_prefix:-$cc}" in
4386             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4387             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4388 __asm__ (".eabi_attribute 28, 1");
4389 int main(void) { return 0; }
4390 EOF
4391         esac
4392         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4393     fi
4394
4395     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4396     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4397     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4398     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4399     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4400     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4401
4402     [ $target_os = linux ] || [ $target_os = android ] ||
4403         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4404             $ARCH_EXT_LIST_ARM
4405
4406     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4407
4408     check_as <<EOF && enable as_arch_directive
4409 .arch armv7-a
4410 EOF
4411     check_as <<EOF && enable as_fpu_directive
4412 .fpu neon
4413 EOF
4414
4415     # llvm's integrated assembler supports .object_arch from llvm 3.5
4416     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4417         check_as <<EOF && enable as_object_arch
4418 .object_arch armv4
4419 EOF
4420
4421     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4422
4423 elif enabled mips; then
4424
4425     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4426
4427     # make sure that only an instruction set is enabled
4428     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4429
4430     if enabled mips64; then
4431         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4432             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4433                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4434     else
4435         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4436             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4437                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4438     fi
4439
4440 elif enabled parisc; then
4441
4442     if enabled gcc; then
4443         case $($cc -dumpversion) in
4444             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4445         esac
4446     fi
4447
4448 elif enabled ppc; then
4449
4450     enable local_aligned_8 local_aligned_16 local_aligned_32
4451
4452     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4453     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4454     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4455     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4456
4457     if enabled altivec; then
4458         check_cflags -maltivec -mabi=altivec
4459
4460         # check if our compiler supports Motorola AltiVec C API
4461         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4462                                  vector signed int v2 = (vector signed int) { 1 };
4463                                  v1 = vec_add(v1, v2);" ||
4464             disable altivec
4465
4466         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4467     fi
4468
4469     if enabled vsx; then
4470         check_cflags -mvsx &&
4471         check_code cc altivec.h "int v[4] = { 0 };
4472                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
4473             disable vsx
4474     fi
4475
4476     if enabled power8; then
4477         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4478     fi
4479
4480 elif enabled x86; then
4481
4482     check_builtin rdtsc    intrin.h   "__rdtsc()"
4483     check_builtin mm_empty mmintrin.h "_mm_empty()"
4484
4485     enable local_aligned_8 local_aligned_16 local_aligned_32
4486
4487     # check whether EBP is available on x86
4488     # As 'i' is stored on the stack, this program will crash
4489     # if the base pointer is used to access it because the
4490     # base pointer is cleared in the inline assembly code.
4491     check_exec_crash <<EOF && enable ebp_available
4492 volatile int i=0;
4493 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4494 return i;
4495 EOF
4496
4497     # check whether EBX is available on x86
4498     check_inline_asm ebx_available '""::"b"(0)' &&
4499         check_inline_asm ebx_available '"":::"%ebx"'
4500
4501     # check whether xmm clobbers are supported
4502     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4503
4504     # check whether binutils is new enough to compile SSSE3/MMXEXT
4505     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4506     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4507
4508     probe_x86asm(){
4509         x86asmexe_probe=$1
4510         if check_cmd $x86asmexe_probe -v; then
4511             x86asmexe=$x86asmexe_probe
4512             x86asm_type=nasm
4513             x86asm_debug="-g -F dwarf"
4514             X86ASMDEP=
4515             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4516         elif check_cmd $x86asmexe_probe --version; then
4517             x86asmexe=$x86asmexe_probe
4518             x86asm_type=yasm
4519             x86asm_debug="-g dwarf2"
4520             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4521             X86ASM_DEPFLAGS=
4522         fi
4523         check_x86asm "movbe ecx, [5]" && enable x86asm
4524     }
4525
4526     if ! disabled_any asm mmx x86asm; then
4527         disable x86asm
4528         for program in $x86asmexe nasm yasm; do
4529             probe_x86asm $program && break
4530         done
4531         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4532         X86ASMFLAGS="-f $objformat"
4533         enabled pic               && append X86ASMFLAGS "-DPIC"
4534         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4535         case "$objformat" in
4536             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4537         esac
4538
4539         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4540         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4541         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4542         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4543         check_x86asm "CPU amdnop"                      || disable cpunop
4544     fi
4545
4546     case "$cpu" in
4547         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4548             disable fast_clz
4549         ;;
4550     esac
4551
4552 fi
4553
4554 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4555
4556 check_ldflags -Wl,--as-needed
4557
4558 if ! disabled network; then
4559     check_func getaddrinfo $network_extralibs
4560     check_func inet_aton $network_extralibs
4561
4562     check_type netdb.h "struct addrinfo"
4563     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4564     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4565     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4566     check_type poll.h "struct pollfd"
4567     check_type netinet/sctp.h "struct sctp_event_subscribe"
4568     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4569     check_type netinet/in.h "struct sockaddr_in6"
4570     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4571     check_type "sys/types.h sys/socket.h" socklen_t
4572
4573     # Prefer arpa/inet.h over winsock2
4574     if check_header arpa/inet.h ; then
4575         check_func closesocket
4576     elif check_header winsock2.h ; then
4577         check_func_headers winsock2.h closesocket -lws2 &&
4578             network_extralibs="-lws2" ||
4579         { check_func_headers winsock2.h closesocket -lws2_32 &&
4580             network_extralibs="-lws2_32"; } || disable winsock2_h network
4581         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4582
4583         check_type ws2tcpip.h socklen_t
4584         check_type ws2tcpip.h "struct addrinfo"
4585         check_type ws2tcpip.h "struct group_source_req"
4586         check_type ws2tcpip.h "struct ip_mreq_source"
4587         check_type ws2tcpip.h "struct ipv6_mreq"
4588         check_type winsock2.h "struct pollfd"
4589         check_struct winsock2.h "struct sockaddr" sa_len
4590         check_type ws2tcpip.h "struct sockaddr_in6"
4591         check_type ws2tcpip.h "struct sockaddr_storage"
4592     else
4593         disable network
4594     fi
4595 fi
4596
4597 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4598 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4599 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4600 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4601
4602 case "$custom_allocator" in
4603     jemalloc)
4604         # jemalloc by default does not use a prefix
4605         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4606     ;;
4607     tcmalloc)
4608         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4609         malloc_prefix=tc_
4610     ;;
4611 esac
4612
4613 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4614 check_func  ${malloc_prefix}memalign            && enable memalign
4615 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4616
4617 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4618     { check_lib clock_gettime time.h clock_gettime ||
4619       check_lib clock_gettime time.h clock_gettime -lrt; }
4620
4621 check_func  fcntl
4622 check_func  fork
4623 check_func  gethrtime
4624 check_func  getopt
4625 check_func  getrusage
4626 check_func  gettimeofday
4627 check_func  gmtime_r
4628 check_func  isatty
4629 check_func  localtime_r
4630 check_func  mach_absolute_time
4631 check_func  mkstemp
4632 check_func  mmap
4633 check_func  mprotect
4634 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4635 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4636 check_func  sched_getaffinity
4637 check_func  setrlimit
4638 check_func  strerror_r
4639 check_func  sysconf
4640 check_func  sysctl
4641 check_func  usleep
4642
4643 check_func_headers io.h setmode
4644 check_func_headers stdlib.h getenv
4645
4646 check_func_headers windows.h GetProcessAffinityMask
4647 check_func_headers windows.h GetProcessTimes
4648 check_func_headers windows.h GetSystemTimeAsFileTime
4649 check_func_headers windows.h LoadLibrary
4650 check_func_headers windows.h MapViewOfFile
4651 check_func_headers windows.h SetConsoleTextAttribute
4652 check_func_headers windows.h Sleep
4653 check_func_headers windows.h VirtualAlloc
4654 check_struct windows.h "CONDITION_VARIABLE" Ptr
4655
4656 check_header direct.h
4657 check_header dxgidebug.h
4658 check_header dxva.h
4659 check_header dxva2api.h
4660 check_header io.h
4661 check_header mach/mach_time.h
4662 check_header malloc.h
4663 check_header poll.h
4664 check_header sys/param.h
4665 check_header sys/resource.h
4666 check_header sys/select.h
4667 check_header sys/time.h
4668 check_header sys/un.h
4669 check_header unistd.h
4670 check_header valgrind/valgrind.h
4671 check_header VideoDecodeAcceleration/VDADecoder.h
4672 check_header windows.h
4673
4674 # it seems there are versions of clang in some distros that try to use the
4675 # gcc headers, which explodes for stdatomic
4676 # so we also check that atomics actually work here
4677 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4678
4679 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4680 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4681 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4682 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4683
4684 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4685
4686 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4687 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4688 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4689
4690 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4691 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4692 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4693
4694 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4695 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4696 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4697 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4698 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4699 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4700 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4701 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4702 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4703
4704 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4705
4706 if ! disabled w32threads && ! enabled pthreads; then
4707     check_lib w32threads "windows.h process.h" _beginthreadex
4708 fi
4709
4710 # check for some common methods of building with pthread support
4711 # do this before the optional library checks as some of them require pthreads
4712 if ! disabled pthreads && ! enabled w32threads; then
4713     if check_lib pthreads pthread.h pthread_join -pthread; then
4714         add_cflags -pthread
4715     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4716         add_cflags -pthreads
4717     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4718         :
4719     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4720         :
4721     elif check_func pthread_join; then
4722         enable pthreads
4723     fi
4724 fi
4725
4726 enabled pthreads &&
4727     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4728
4729 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4730 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4731
4732 # On some systems dynamic loading requires no extra linker flags
4733 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4734
4735 check_lib libm math.h sin -lm
4736
4737 atan2f_args=2
4738 ldexpf_args=2
4739 powf_args=2
4740
4741 for func in $MATH_FUNCS; do
4742     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4743 done
4744
4745 # these are off by default, so fail if requested and not available
4746 enabled avisynth          && require_header avisynth/avisynth_c.h
4747 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4748 enabled cuda              && require cuda cuda.h cuInit -lcuda
4749 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4750 enabled frei0r            && require_header frei0r.h
4751 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4752 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4753 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4754 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4755 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4756 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4757 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4758 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4759 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4760                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4761                                done || die "ERROR: libgsm not found"; }
4762 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4763 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4764 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4765 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4766 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4767 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4768 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4769 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4770 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4771 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4772 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4773                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4774 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4775 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4776 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4777 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4778 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4779 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4780 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4781 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4782 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4783 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4784 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4785 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4786                              { enabled libvpx_vp8_decoder &&
4787                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4788                                enabled libvpx_vp8_encoder &&
4789                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4790                                enabled libvpx_vp9_decoder &&
4791                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4792                                enabled libvpx_vp9_encoder &&
4793                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4794                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4795                                    die "libvpx enabled but no supported decoders/encoders found"
4796                              }
4797 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4798 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4799 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4800                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4801                              { check_cpp_condition x264.h "X264_MPEG2" &&
4802                                enable libx262; }
4803 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4804                              require_cpp_condition x265.h "X265_BUILD >= 57"
4805 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4806 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4807 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4808                                { ! enabled cross_compile &&
4809                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4810                                  add_ldflags -L/opt/vc/lib/ &&
4811                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4812                                die "ERROR: mmal not found" &&
4813                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4814 enabled omx               && require_header OMX_Core.h
4815 enabled omx_rpi           && { check_header OMX_Core.h ||
4816                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4817                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4818 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4819                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4820                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4821                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4822                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4823                                die "ERROR: openssl not found"; }
4824
4825 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4826
4827 if enabled nvenc; then
4828     require_header nvEncodeAPI.h
4829     require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4830 fi
4831
4832 # SDL adds some CFLAGS that should not be part of the general CFLAGS.
4833 enabled avplay &&
4834     test_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent
4835
4836 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4837 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4838
4839 check_header linux/fb.h
4840 check_header linux/videodev2.h
4841 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4842
4843 check_header AVFoundation/AVFoundation.h
4844
4845 check_header sys/videoio.h
4846
4847 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4848 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4849 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4850 # w32api 3.12 had it defined wrong
4851 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4852
4853 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4854 { check_header dev/bktr/ioctl_meteor.h &&
4855   check_header dev/bktr/ioctl_bt848.h; } ||
4856 { check_header machine/ioctl_meteor.h &&
4857   check_header machine/ioctl_bt848.h; } ||
4858 { check_header dev/video/meteor/ioctl_meteor.h &&
4859   check_header dev/video/bktr/ioctl_bt848.h; } ||
4860 check_header dev/ic/bt8xx.h
4861
4862 check_header sys/soundcard.h
4863 check_header soundcard.h
4864
4865 enabled_any alsa_indev alsa_outdev &&
4866     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4867
4868 enabled libjack &&
4869     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
4870
4871 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
4872
4873 if enabled libcdio; then
4874     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4875     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4876     die "ERROR: No usable libcdio/cdparanoia found"
4877 fi
4878
4879 if enabled libxcb; then
4880     require_pkg_config libxcb xcb xcb/xcb.h xcb_connect
4881     require_pkg_config libxcb_shape xcb-shape xcb/shape.h xcb_shape_rectangles
4882     disabled libxcb_shm ||
4883         check_pkg_config libxcb_shm xcb-shm xcb/shm.h xcb_shm_attach
4884     disabled libxcb_xfixes ||
4885         check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
4886 fi
4887
4888 # d3d11va requires linking directly to dxgi and d3d11 if not building for
4889 # the desktop api partition
4890 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
4891 #ifdef WINAPI_FAMILY
4892 #include <winapifamily.h>
4893 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4894 #error desktop, not uwp
4895 #else
4896 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
4897 #endif
4898 #else
4899 #error no family set
4900 #endif
4901 EOF
4902
4903 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4904
4905 enabled vaapi &&
4906     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4907     disable vaapi
4908
4909 enabled vaapi &&
4910     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4911
4912 enabled vaapi &&
4913     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4914
4915 enabled vdpau &&
4916     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4917     disable vdpau
4918
4919 enabled vdpau &&
4920     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4921
4922 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4923
4924 # add some useful compiler flags if supported
4925 check_cflags -Wdeclaration-after-statement
4926 check_cflags -Wall
4927 check_cflags -Wdisabled-optimization
4928 check_cflags -Wpointer-arith
4929 check_cflags -Wredundant-decls
4930 check_cflags -Wwrite-strings
4931 check_cflags -Wtype-limits
4932 check_cflags -Wundef
4933 check_cflags -Wmissing-prototypes
4934 check_cflags -Wstrict-prototypes
4935
4936 if enabled extra_warnings; then
4937     check_cflags -Wcast-qual
4938     check_cflags -Wextra
4939     check_cflags -Wpedantic
4940 fi
4941
4942 check_disable_warning(){
4943     warning_flag=-W${1#-Wno-}
4944     test_cflags $warning_flag && add_cflags $1
4945 }
4946
4947 check_disable_warning -Wno-parentheses
4948 check_disable_warning -Wno-switch
4949 check_disable_warning -Wno-format-zero-length
4950 check_disable_warning -Wno-pointer-sign
4951
4952 check_disable_warning_headers(){
4953     warning_flag=-W${1#-Wno-}
4954     test_cflags $warning_flag && add_cflags_headers $1
4955 }
4956
4957 check_disable_warning_headers -Wno-deprecated-declarations
4958 check_disable_warning_headers -Wno-unused-variable
4959
4960 check_objcflags -fobjc-arc && enable objc_arc
4961
4962 check_cc <<EOF && enable blocks_extension
4963 void (^block)(void);
4964 EOF
4965
4966 # add some linker flags
4967 check_ldflags -Wl,--warn-common
4968 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4969 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
4970 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4971
4972 # add some strip flags
4973 # -wN '..@*' is more selective than -x, but not available everywhere.
4974 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4975
4976 enabled neon_clobber_test &&
4977     check_ldflags -Wl,--wrap,avcodec_open2              \
4978                   -Wl,--wrap,avcodec_decode_audio4      \
4979                   -Wl,--wrap,avcodec_decode_video2      \
4980                   -Wl,--wrap,avcodec_decode_subtitle2   \
4981                   -Wl,--wrap,avcodec_encode_audio2      \
4982                   -Wl,--wrap,avcodec_encode_video2      \
4983                   -Wl,--wrap,avcodec_encode_subtitle    \
4984                   -Wl,--wrap,avcodec_send_packet        \
4985                   -Wl,--wrap,avcodec_receive_packet     \
4986                   -Wl,--wrap,avcodec_send_frame         \
4987                   -Wl,--wrap,avcodec_receive_frame      \
4988                   -Wl,--wrap,avresample_convert ||
4989     disable neon_clobber_test
4990
4991 enabled xmm_clobber_test &&
4992     check_ldflags -Wl,--wrap,avcodec_open2              \
4993                   -Wl,--wrap,avcodec_decode_audio4      \
4994                   -Wl,--wrap,avcodec_decode_video2      \
4995                   -Wl,--wrap,avcodec_decode_subtitle2   \
4996                   -Wl,--wrap,avcodec_encode_audio2      \
4997                   -Wl,--wrap,avcodec_encode_video2      \
4998                   -Wl,--wrap,avcodec_encode_subtitle    \
4999                   -Wl,--wrap,avcodec_send_packet        \
5000                   -Wl,--wrap,avcodec_receive_packet     \
5001                   -Wl,--wrap,avcodec_send_frame         \
5002                   -Wl,--wrap,avcodec_receive_frame      \
5003                   -Wl,--wrap,avresample_convert         \
5004                   -Wl,--wrap,sws_scale ||
5005     disable xmm_clobber_test
5006
5007 check_ld <<EOF && enable proper_dce
5008 extern const int array[512];
5009 static inline int func(void) { return array[0]; }
5010 int main(void) { return 0; }
5011 EOF
5012
5013 if enabled proper_dce; then
5014     echo "X { local: *; };" > $TMPV
5015     if test_ldflags -Wl,${version_script},$TMPV; then
5016         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
5017         check_cc <<EOF && enable symver_asm_label
5018 void ff_foo(void) __asm__ ("av_foo@VERSION");
5019 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5020 EOF
5021         check_cc <<EOF && enable symver_gnu_asm
5022 __asm__(".symver ff_foo,av_foo@VERSION");
5023 void ff_foo(void) {}
5024 EOF
5025     fi
5026 fi
5027
5028 if [ -z "$optflags" ]; then
5029     if enabled small; then
5030         optflags=$cflags_size
5031     elif enabled optimizations; then
5032         optflags=$cflags_speed
5033     else
5034         optflags=$cflags_noopt
5035     fi
5036 fi
5037
5038 check_optflags(){
5039     check_cflags "$@"
5040     enabled lto && check_ldflags "$@"
5041 }
5042
5043 check_optflags $optflags
5044 check_optflags -fno-math-errno
5045 check_optflags -fno-signed-zeros
5046
5047 if enabled lto; then
5048     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5049     check_cflags  -flto
5050     check_ldflags -flto $cpuflags
5051 fi
5052
5053 if enabled icc; then
5054     # Just warnings, no remarks
5055     check_cflags -w1
5056     # -wd: Disable following warnings
5057     # 144, 167, 556: -Wno-pointer-sign
5058     # 1292: attribute "foo" ignored
5059     # 1419: external declaration in primary source file
5060     # 10006: ignoring unknown option -fno-signed-zeros
5061     # 10148: ignoring unknown option -Wno-parentheses
5062     # 10156: ignoring option '-W'; no argument required
5063     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
5064     # 11030: Warning unknown option --as-needed
5065     # 10156: ignoring option '-export'; no argument required
5066     check_ldflags -wd10156,11030
5067     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5068     enable ebp_available
5069     if enabled x86_32; then
5070         icc_version=$($cc -dumpversion)
5071         test ${icc_version%%.*} -ge 11 &&
5072             check_cflags -falign-stack=maintain-16-byte ||
5073             disable aligned_stack
5074     fi
5075 elif enabled gcc; then
5076     check_optflags -fno-tree-vectorize
5077     check_cflags -Werror=implicit-function-declaration
5078     check_cflags -Werror=missing-prototypes
5079     check_cflags -Werror=return-type
5080     check_cflags -Werror=declaration-after-statement
5081     check_cflags -Werror=vla
5082     check_cflags -Werror=format-security
5083     check_cflags -fdiagnostics-color=auto
5084     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5085 elif enabled llvm_gcc; then
5086     check_cflags -mllvm -stack-alignment=16
5087 elif enabled clang; then
5088     check_cflags -mllvm -stack-alignment=16
5089     check_cflags -Qunused-arguments
5090     check_cflags -Werror=implicit-function-declaration
5091     check_cflags -Werror=missing-prototypes
5092     check_cflags -Werror=return-type
5093 elif enabled cparser; then
5094     add_cflags -Wno-missing-variable-declarations
5095     add_cflags -Wno-empty-statement
5096 elif enabled armcc; then
5097     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5098     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5099     # 2523: use of inline assembly is deprecated
5100     add_cflags -W${armcc_opt},--diag_suppress=2523
5101     add_cflags -W${armcc_opt},--diag_suppress=1207
5102     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5103     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5104     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5105     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5106 elif enabled tms470; then
5107     add_cflags -pds=824 -pds=837
5108     disable inline_asm
5109 elif enabled pathscale; then
5110     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5111     disable inline_asm
5112 elif enabled_any msvc icl; then
5113     enabled x86_32 && disable aligned_stack
5114     enabled_all x86_32 debug && add_cflags -Oy-
5115     enabled debug && add_ldflags -debug
5116     enable pragma_deprecated
5117     if enabled icl; then
5118         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5119         # (correctly) on icl 13.x.
5120         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5121             add_cflags -Qansi-alias
5122         # icl will pass the inline asm tests but inline asm is currently
5123         # not supported (build will fail)
5124         disable inline_asm
5125     fi
5126     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5127     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5128     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5129     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5130     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5131     # MSVC 2013 and newer can handle it fine.
5132     # If this declspec fails, force including stdlib.h before the restrict redefinition
5133     # happens in config.h.
5134     if [ $_restrict != restrict ]; then
5135         check_cc <<EOF || add_cflags -FIstdlib.h
5136 __declspec($_restrict) void* foo(int);
5137 EOF
5138     fi
5139 fi
5140
5141 for pfx in "" host_; do
5142     varname=${pfx%_}cc_type
5143     eval "type=\$$varname"
5144     if [ "$type" = "msvc" ]; then
5145         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
5146 static inline int foo(int a) { return a; }
5147 EOF
5148     fi
5149 done
5150
5151 case $as_type in
5152     clang)
5153         add_asflags -Qunused-arguments
5154     ;;
5155 esac
5156
5157 case $ld_type in
5158     clang)
5159         check_ldflags -Qunused-arguments
5160     ;;
5161 esac
5162
5163 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5164
5165 check_deps $CONFIG_LIST       \
5166            $CONFIG_EXTRA      \
5167            $HAVE_LIST         \
5168            $ALL_COMPONENTS    \
5169
5170 flatten_extralibs(){
5171     unset nested_entries
5172     list_name=$1
5173     eval list=\$${1}
5174     for entry in $list; do
5175         entry_copy=$entry
5176         resolve entry_copy
5177         append nested_entries $(filter '*_extralibs' $entry_copy)
5178         flat_entries=$(filter_out '*_extralibs' $entry_copy)
5179         eval $entry="\$flat_entries"
5180     done
5181     append $list_name "$nested_entries"
5182
5183     resolve nested_entries
5184     if test -n "$(filter '*_extralibs' $nested_entries)"; then
5185         flatten_extralibs $list_name
5186     fi
5187 }
5188
5189 for linkunit in $LIBRARY_LIST; do
5190     unset current_extralibs
5191     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
5192     for comp in ${components}; do
5193         enabled $comp || continue
5194         comp_extralibs="${comp}_extralibs"
5195         append current_extralibs $comp_extralibs
5196     done
5197     eval prepend ${linkunit}_extralibs $current_extralibs
5198 done
5199
5200 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
5201     flatten_extralibs ${linkunit}_extralibs
5202     unique  ${linkunit}_extralibs
5203     resolve ${linkunit}_extralibs
5204     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
5205 done
5206
5207 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5208
5209 for thread in $THREADS_LIST; do
5210     if enabled $thread; then
5211         test -n "$thread_type" &&
5212             die "ERROR: Only one thread type must be selected." ||
5213             thread_type="$thread"
5214     fi
5215 done
5216
5217 if disabled stdatomic_h; then
5218     if enabled atomics_gcc; then
5219         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
5220     elif enabled atomics_win32; then
5221         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
5222     elif enabled atomics_suncc; then
5223         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
5224     elif enabled pthreads; then
5225         add_compat atomics/pthread/stdatomic.o
5226         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
5227     else
5228         enabled threads && die "Threading is enabled, but no atomics are available"
5229         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
5230     fi
5231 fi
5232
5233 enabled zlib && add_cppflags -DZLIB_CONST
5234
5235 # conditional library dependencies, in linking order
5236 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5237 enabled_any asyncts_filter resample_filter &&
5238                            prepend avfilter_deps "avresample"
5239 enabled scale_filter    && prepend avfilter_deps "swscale"
5240
5241 enabled opus_decoder    && prepend avcodec_deps "avresample"
5242
5243 expand_deps(){
5244     lib_deps=${1}_deps
5245     eval "deps=\$$lib_deps"
5246     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5247     unique $lib_deps
5248 }
5249
5250 map 'expand_deps $v' $LIBRARY_LIST
5251
5252 if test "$quiet" != "yes"; then
5253
5254 echo "install prefix            $prefix"
5255 echo "source path               $source_path"
5256 echo "C compiler                $cc"
5257 echo "C library                 $libc_type"
5258 if test "$host_cc" != "$cc"; then
5259     echo "host C compiler           $host_cc"
5260     echo "host C library            $host_libc_type"
5261 fi
5262 echo "ARCH                      $arch ($cpu)"
5263 if test "$extra_version" != ""; then
5264     echo "version string suffix     $extra_version"
5265 fi
5266 echo "big-endian                ${bigendian-no}"
5267 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5268 if enabled x86; then
5269     echo "standalone assembly       ${x86asm-no}"
5270     echo "x86 assembler             ${x86asmexe}"
5271     echo "MMX enabled               ${mmx-no}"
5272     echo "MMXEXT enabled            ${mmxext-no}"
5273     echo "3DNow! enabled            ${amd3dnow-no}"
5274     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5275     echo "SSE enabled               ${sse-no}"
5276     echo "SSSE3 enabled             ${ssse3-no}"
5277     echo "AVX enabled               ${avx-no}"
5278     echo "XOP enabled               ${xop-no}"
5279     echo "FMA3 enabled              ${fma3-no}"
5280     echo "FMA4 enabled              ${fma4-no}"
5281     echo "i686 features enabled     ${i686-no}"
5282     echo "CMOV is fast              ${fast_cmov-no}"
5283     echo "EBX available             ${ebx_available-no}"
5284     echo "EBP available             ${ebp_available-no}"
5285 fi
5286 if enabled aarch64; then
5287     echo "NEON enabled              ${neon-no}"
5288     echo "VFP enabled               ${vfp-no}"
5289 fi
5290 if enabled arm; then
5291     echo "ARMv5TE enabled           ${armv5te-no}"
5292     echo "ARMv6 enabled             ${armv6-no}"
5293     echo "ARMv6T2 enabled           ${armv6t2-no}"
5294     echo "VFP enabled               ${vfp-no}"
5295     echo "NEON enabled              ${neon-no}"
5296 fi
5297 if enabled ppc; then
5298     echo "AltiVec enabled           ${altivec-no}"
5299     echo "VSX enabled               ${vsx-no}"
5300     echo "POWER8 enabled            ${power8-no}"
5301     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5302     echo "dcbzl available           ${dcbzl-no}"
5303 fi
5304 echo "debug symbols             ${debug-no}"
5305 echo "optimize for size         ${small-no}"
5306 echo "optimizations             ${optimizations-no}"
5307 echo "static                    ${static-no}"
5308 echo "shared                    ${shared-no}"
5309 echo "network support           ${network-no}"
5310 echo "threading support         ${thread_type-no}"
5311 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5312 test -n "$random_seed" &&
5313     echo "random seed               ${random_seed}"
5314 echo
5315
5316 echo "External libraries:"
5317 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5318 echo
5319 echo "External libraries providing hardware acceleration:"
5320 print_enabled '' $HWACCEL_LIBRARY_LIST | print_3_columns
5321 echo
5322
5323 echo "Libraries:"
5324 print_enabled '' $LIBRARY_LIST | print_3_columns
5325 echo
5326
5327 echo "Programs:"
5328 print_enabled '' $PROGRAM_LIST | print_3_columns
5329 echo
5330
5331 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5332     echo "Enabled ${type}s:"
5333     eval list=\$$(toupper $type)_LIST
5334     print_enabled '_*' $list | print_3_columns
5335     echo
5336 done
5337
5338 if test -n "$ignore_tests"; then
5339     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
5340     echo "Ignored FATE tests:"
5341     echo $ignore_tests | print_3_columns
5342     echo
5343 fi
5344
5345 license="LGPL version 2.1 or later"
5346 if enabled nonfree; then
5347     license="nonfree and unredistributable"
5348 elif enabled gplv3; then
5349     license="GPL version 3 or later"
5350 elif enabled lgplv3; then
5351     license="LGPL version 3 or later"
5352 elif enabled gpl; then
5353     license="GPL version 2 or later"
5354 fi
5355
5356 echo "License: $license"
5357
5358 echo "Creating configuration files ..."
5359
5360 fi # test "$quiet" != "yes"
5361
5362 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5363
5364 config_files="$TMPH avbuild/config.mak"
5365
5366 cat > avbuild/config.mak <<EOF
5367 # Automatically generated by configure - do not modify!
5368 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
5369 prefix=$prefix
5370 LIBDIR=\$(DESTDIR)$libdir
5371 SHLIBDIR=\$(DESTDIR)$shlibdir
5372 INCDIR=\$(DESTDIR)$incdir
5373 BINDIR=\$(DESTDIR)$bindir
5374 DATADIR=\$(DESTDIR)$datadir
5375 DOCDIR=\$(DESTDIR)$docdir
5376 MANDIR=\$(DESTDIR)$mandir
5377 SRC_PATH=$source_path
5378 CC_IDENT=$cc_ident
5379 ARCH=$arch
5380 INTRINSICS=$intrinsics
5381 CC=$cc
5382 AS=$as
5383 OBJCC=$objcc
5384 LD=$ld
5385 DEPCC=$dep_cc
5386 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5387 DEPAS=$as
5388 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5389 X86ASM=$x86asmexe
5390 DEPX86ASM=$x86asmexe
5391 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
5392 AR=$ar
5393 ARFLAGS=$arflags
5394 AR_O=$ar_o
5395 AR_CMD=$ar
5396 NM_CMD=$nm
5397 RANLIB=$ranlib
5398 STRIP=$strip
5399 LN_S=$ln_s
5400 CPPFLAGS=$CPPFLAGS
5401 CFLAGS=$CFLAGS
5402 OBJCFLAGS=$OBJCFLAGS
5403 ASFLAGS=$ASFLAGS
5404 AS_C=$AS_C
5405 AS_O=$AS_O
5406 OBJCC_C=$OBJCC_C
5407 OBJCC_E=$OBJCC_E
5408 OBJCC_O=$OBJCC_O
5409 CC_C=$CC_C
5410 CC_E=$CC_E
5411 CC_O=$CC_O
5412 X86ASM_O=$X86ASM_O
5413 LD_O=$LD_O
5414 LD_LIB=$LD_LIB
5415 LD_PATH=$LD_PATH
5416 DLLTOOL=$dlltool
5417 LDFLAGS=$LDFLAGS
5418 LDEXEFLAGS=$LDEXEFLAGS
5419 LDSOFLAGS=$LDSOFLAGS
5420 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5421 STRIPFLAGS=$STRIPFLAGS
5422 X86ASMFLAGS=$X86ASMFLAGS
5423 LIBPREF=$LIBPREF
5424 LIBSUF=$LIBSUF
5425 LIBNAME=$LIBNAME
5426 SLIBPREF=$SLIBPREF
5427 SLIBSUF=$SLIBSUF
5428 EXESUF=$EXESUF
5429 EXTRA_VERSION=$extra_version
5430 CCDEP=$CCDEP
5431 CCDEP_FLAGS=$CCDEP_FLAGS
5432 ASDEP=$ASDEP
5433 ASDEP_FLAGS=$ASDEP_FLAGS
5434 X86ASMDEP=$X86ASMDEP
5435 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
5436 CC_DEPFLAGS=$CC_DEPFLAGS
5437 AS_DEPFLAGS=$AS_DEPFLAGS
5438 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
5439 HOSTCC=$host_cc
5440 HOSTLD=$host_ld
5441 HOSTCFLAGS=$host_cflags
5442 HOSTCPPFLAGS=$host_cppflags
5443 HOSTEXESUF=$HOSTEXESUF
5444 HOSTLDFLAGS=$host_ldflags
5445 HOSTEXTRALIBS=$host_extralibs
5446 DEPHOSTCC=$host_cc
5447 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5448 HOSTCCDEP=$HOSTCCDEP
5449 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5450 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5451 HOSTCC_C=$HOSTCC_C
5452 HOSTCC_O=$HOSTCC_O
5453 HOSTLD_O=$HOSTLD_O
5454 TARGET_EXEC=$target_exec $target_exec_args
5455 TARGET_PATH=$target_path
5456 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5457 CFLAGS-avplay=$sdl_cflags
5458 CFLAGS_HEADERS=$CFLAGS_HEADERS
5459 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5460 EXTRALIBS=$extralibs
5461 COMPAT_OBJS=$compat_objs
5462 INSTALL=install
5463 LIBTARGET=${LIBTARGET}
5464 SLIBNAME=${SLIBNAME}
5465 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5466 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5467 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5468 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5469 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5470 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5471 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5472 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5473 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
5474 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
5475 IGNORE_TESTS=$ignore_tests
5476 EOF
5477
5478 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> avbuild/config.mak' $LIBRARY_LIST
5479
5480 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
5481     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> avbuild/config.mak
5482 done
5483
5484 cat > $TMPH <<EOF
5485 /* Automatically generated by configure - do not modify! */
5486 #ifndef LIBAV_CONFIG_H
5487 #define LIBAV_CONFIG_H
5488 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
5489 #define LIBAV_LICENSE "$(c_escape $license)"
5490 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5491 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5492 #define restrict $_restrict
5493 #define EXTERN_PREFIX "${extern_prefix}"
5494 #define EXTERN_ASM ${extern_prefix}
5495 #define SLIBSUF "$SLIBSUF"
5496 EOF
5497
5498 test -n "$malloc_prefix" &&
5499     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5500
5501 if enabled x86asm; then
5502     append config_files $TMPASM
5503     printf '' >$TMPASM
5504 fi
5505
5506 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5507
5508 print_config ARCH_   "$config_files" $ARCH_LIST
5509 print_config HAVE_   "$config_files" $HAVE_LIST
5510 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5511                                      $CONFIG_EXTRA      \
5512                                      $ALL_COMPONENTS    \
5513
5514 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
5515
5516 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5517 cp_if_changed $TMPH config.h
5518 touch avbuild/.config
5519
5520 enabled x86asm && cp_if_changed $TMPASM config.asm
5521
5522 cat > $TMPH <<EOF
5523 /* Generated by ffconf */
5524 #ifndef AVUTIL_AVCONFIG_H
5525 #define AVUTIL_AVCONFIG_H
5526 EOF
5527
5528 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5529
5530 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5531
5532 cp_if_changed $TMPH libavutil/avconfig.h
5533
5534 # generate the lists of enabled components
5535 print_enabled_components(){
5536     file=$1
5537     struct_name=$2
5538     name=$3
5539     shift 3
5540     echo "static const $struct_name * const $name[] = {" > $TMPH
5541     for c in $*; do
5542         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
5543     done
5544     echo "    NULL };" >> $TMPH
5545     cp_if_changed $TMPH $file
5546 }
5547
5548 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
5549 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
5550
5551 test -n "$WARNINGS" && printf "\n$WARNINGS"
5552
5553 # Settings for pkg-config files
5554
5555 cat > avbuild/config.sh <<EOF
5556 # Automatically generated by configure - do not modify!
5557 shared=$shared
5558 prefix=$prefix
5559 libdir=$libdir
5560 incdir=$incdir
5561 source_path=${source_path}
5562 LIBPREF=${LIBPREF}
5563 LIBSUF=${LIBSUF}
5564 extralibs_avutil="$avutil_extralibs"
5565 extralibs_avcodec="$avcodec_extralibs"
5566 extralibs_avformat="$avformat_extralibs"
5567 extralibs_avdevice="$avdevice_extralibs"
5568 extralibs_avfilter="$avfilter_extralibs"
5569 extralibs_avresample="$avresample_extralibs"
5570 extralibs_swscale="$swscale_extralibs"
5571 EOF
5572
5573 for lib in $LIBRARY_LIST; do
5574     lib_deps="$(eval echo \$${lib}_deps)"
5575     echo ${lib}_deps=\"$lib_deps\" >> avbuild/config.sh
5576 done